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rn=i$();if(null===rn?null===e:rn.d(e)){var on=En(n).aa;n:{zn(n,i$());var sn=new FE(n,At(n),Xn(n));if(Dn(n,L$().$G)){zn(n,L$().$G);var an=new LF(Dt(n))}else an=qF();var un=new FE(n,sn,an);zn(n,Dm());var cn=new FE(n,un,Mn(n)),fn=cn.Jb;if(null!==fn){var hn=fn.Jb,ln=fn.Kb;if(null!==hn){var pn=hn.Jb,wn=hn.Kb;if(ln instanceof LF){var dn=new LJ(pn,wn,ln.oa,cn.Kb);break n}}}var vn=cn.Jb;if(null!==vn){var yn=vn.Jb;if(null!==yn){var bn=yn.Jb,gn=yn.Kb;if(qF()===vn.Kb){dn=new BJ(bn,gn,cn.Kb);break n}}}throw new pq(cn)}var mn=1+n.da.$|0;Cc(n.A,dn,Rc(n.C,on)),zc(n.A,dn,Rc(n.C,mn));var $n=dn;Ln(n),B=new KK($n,Tn(n))}else{var xn=D$();if(null===xn?null===e:xn.d(e)){zn(n,D$());var An=new HK(rt(n)),In=En(n).Ia,jn=Sm();if((null===jn?null===In:jn.d(In))||Nn(n))var Sn=!0;else{var Cn=n.ul.V(n.db-1|0).Ia,Rn=km();Sn=null===Cn?null===Rn:Cn.d(Rn)}Sn&&Ln(n),B=An}else{var Fn=rt(n);if(Ln(n),Nn(n))B=new HK(Fn);else B=new VK(Fn,Tn(n))}}}}var Pn=1+n.da.$|0;return Cc(n.A,B,Rc(n.C,t)),zc(n.A,B,Rc(n.C,Pn)),B}function qn(n,t,e,r){if(e instanceof JJ){var i=e.kj,o=e.em,s=e.sp,a=e.lj;return new HK(new JJ(i,o,s,a,n=aP(e=e.jj,new GK(_h().r,n,t,r))))}return new HK(e instanceof WK?new WK(i=e.Ah,o=e.qp,s=e.Wg,n=aP(e=e.Vg,new GK(a=_h().r,n,t,r))):new WK(e=e instanceof YJ?new kJ(e.Gk):new SK(e),i=_h().r,o=_h().r,new a1(n=new GK(s=_h().r,n,t,r),t=_h().r)))}function Ln(n){var t=En(n).Ia,e=Sm();(null===e?null===t:e.d(t))?zn(n,Sm()):Nn(n)||(t=n.ul.V(n.db-1|0).Ia,e=km(),(null===t?null===e:t.d(e))||Vt(n,"Expected ;"))}function Mn(n){var t=En(n).aa;if(Dn(n,Nm())){zn(n,Nm());var e=Tn(n);e=new UK(e),zn(n,Tm())}else Dn(n,D$())?(zn(n,D$()),e=new HK(e=rt(n))):e=new HK(e=rt(n));var r=1+n.da.$|0;return Cc(n.A,e,Rc(n.C,t)),zc(n.A,e,Rc(n.C,r)),e}function Rn(n){var t=new T1,e=jt(n);for(q1(t,e);Dn(n,Fm());)zn(n,Fm()),q1(t,e=jt(n));return Ef(n=t.ua(),"","/","")}function Bn(n){var t=En(n).Ia,e=r$();return!!((null===e?null===t:e.d(t))||((null===(e=y$())?null===t:e.d(t))||((null===(e=u$())?null===t:e.d(t))||((null===(e=c$())?null===t:e.d(t))||(null===(e=z$())?null===t:e.d(t))))))||(((null===(e=m$())?null===t:e.d(t))||((null===(e=c$())?null===t:e.d(t))||((null===(e=f$())?null===t:e.d(t))||((null===(e=u$())?null===t:e.d(t))||(null===(e=k$())?null===t:e.d(t))))))&&Vt(n,"Only supported on the toplevel: "+(t=En(n).Ia).k()+" declaration."),!1)}function On(n){var t=En(n).aa,e=En(n).Ia,r=r$();if(null===r?null===e:r.d(e))var i=Pn(n);else(null===(r=y$())?null===e:r.d(e))?i=Un(n):(null===(r=u$())?null===e:r.d(e))?i=Kn(n):(null===(r=c$())?null===e:r.d(e))?i=Vn(n):(null===(r=z$())?null===e:r.d(e))?i=Gn(n):Vt(n,"Expected definition");return e=1+n.da.$|0,Cc(n.A,i,Rc(n.C,t)),zc(n.A,i,Rc(n.C,e)),i}function Fn(n){for(var t=En(n).aa,e=new T1;Bn(n);){var r=On(n);q1(e,r)}return e=e.ua(),r=1+n.da.$|0,Cc(n.A,e,Rc(n.C,t)),zc(n.A,e,Rc(n.C,r)),e}function Pn(n){var t=En(n).aa;zn(n,r$());var e=At(n),r=Xn(n);return zn(n,Dm()),e=new RJ(e,r,Mn(n)),r=1+n.da.$|0,Cc(n.A,e,Rc(n.C,t)),zc(n.A,e,Rc(n.C,r)),e}function Un(n){var t=En(n).aa;zn(n,y$());var e=At(n);if(Dn(n,jm())||Dn(n,Dm())){var r=En(n).aa;if(Dn(n,jm())){var i=et(n);i=new LF(i)}else i=qF();var o=1+n.da.$|0;Cc(n.A,i,Rc(n.C,r)),zc(n.A,i,Rc(n.C,o)),r=i,zn(n,Dm()),e=new EJ(e,r,i=rt(n))}else{if(null===(r=Tt(n)))throw new pq(r);o=r.ge,i=r.Hd,r=r.Dc;var s=Zn(n);zn(n,Dm()),e=new zJ(e,r,o,i,s,Mn(n))}return r=1+n.da.$|0,Cc(n.A,e,Rc(n.C,t)),zc(n.A,e,Rc(n.C,r)),e}function Kn(n){var t=En(n).aa;zn(n,u$());var e=At(n),r=zt(n);e=(r=new FE(n,e,r)).Jb,r=r.Kb;var i=En(n).Ia,o=Dm();if(null===o?null===i:o.d(i))zn(n,Dm()),e=new MJ(e,r,i=gn(n,!0));else{for(zn(n,Nm()),i=new T1;!Dn(n,Tm());){var s=o=n,a=En(s).aa,u=At(s),c=zt(s);u=new CK(u,c,Mt(s)),c=1+s.da.$|0,Cc(s.A,u,Rc(s.C,a)),zc(s.A,u,Rc(s.C,c)),s=u,Ln(o),q1(i,s)}e=new xJ(e,r,i=i.ua()),zn(n,Tm())}return r=1+n.da.$|0,Cc(n.A,e,Rc(n.C,t)),zc(n.A,e,Rc(n.C,r)),e}function Vn(n){var t=En(n).aa;zn(n,c$());var e=At(n),r=zt(n);return zn(n,Dm()),e=new DJ(e,r,Kt(n)),r=1+n.da.$|0,Cc(n.A,e,Rc(n.C,t)),zc(n.A,e,Rc(n.C,r)),e}function Hn(n){var t=En(n).aa,e=At(n),r=Tt(n);e=new FE(n,e,r);var i=(e=new FE(n,e,r=nt(n))).Jb;if(null===i||(r=i.Kb,i=i.Jb,null===r))throw new pq(e);return e=new FK(i,r.Dc,r.ge,r.Hd,e.Kb),r=1+n.da.$|0,Cc(n.A,e,Rc(n.C,t)),zc(n.A,e,Rc(n.C,r)),e}function Gn(n){var t=En(n).aa;zn(n,z$());var e=At(n);if(Dn(n,Nm())){zn(n,Nm());var r=Fn(n);e=new TJ(e,r),zn(n,Tm())}else Ln(n),e=new TJ(e,r=Fn(n));return r=1+n.da.$|0,Cc(n.A,e,Rc(n.C,t)),zc(n.A,e,Rc(n.C,r)),e}function Jn(n){var t=En(n).aa,e=n.db;try{var r=new LF(n.Rk())}catch(t){if(!((r=t instanceof my?t:new oH(t))instanceof kC))throw r instanceof oH?r.Wc:r;n.db=e,r=qF()}return e=r.f()?H$():r.v(),r=1+n.da.$|0,Cc(n.A,e,Rc(n.C,t)),zc(n.A,e,Rc(n.C,r)),e}function Wn(n){var t=En(n).aa;zn(n,m$());var e,r=Jn(n),i=In(n).Ia;return i instanceof LB?e=new IJ(r,"",new LF(i.vn),new lO("")):Vt(n,"Expected string literal."),r=1+n.da.$|0,Cc(n.A,e,Rc(n.C,t)),zc(n.A,e,Rc(n.C,r)),e}function Qn(n){var t=En(n).aa;n:{zn(n,m$());var e=En(n).aa;if(Dn(n,Nm())||Dn(n,N$())||It(n)){var r=En(n).aa;if(Dn(n,Nm()))var i=Ft(n);else Dn(n,N$())?(zn(n,N$()),i=new fN(i=_h().r)):(_h(),i=xl(Al(),new(U(dO).j)([Dt(n)])),i=new fN(i=dZ(h1(),i)));var o=1+n.da.$|0;Cc(n.A,i,Rc(n.C,r)),zc(n.A,i,Rc(n.C,o)),r=i}else _h(),Al(),_h(),r=xl(Al(),new(U(DF).j)(["effekt"])),r=dZ(h1(),r),r=xl(0,new(U(dO).j)([new wO(r,"io")])),r=new fN(r=dZ(h1(),r));i=1+n.da.$|0,Cc(n.A,r,Rc(n.C,e)),zc(n.A,r,Rc(n.C,i)),e=r,zn(n,y$()),e=new FE(n,e,r=At(n)),e=new FE(n,e,r=Tt(n)),r=nt(n),zn(n,Dm());var s=new FE(n,e,r);if(null!==(e=s.Jb)){r=e.Jb;var a=e.Kb;if(null!==r&&(e=r.Jb,r=r.Kb,null!==a)){i=a.Dc,o=a.ge,a=a.Hd,s=s.Kb;for(var u=new T1;dn(n);){var c=n,f=En(c).aa;if(En(c).Ia instanceof TB){var h=$n(c,c.db,1).Ia,l=Nm();(null===l?null===h:l.d(h))?(h=c.Rk(),zn(c,Nm()),l=Tn(c),zn(c,Tm()),h=new rO(h,l)):h=new iO(h=Jn(c),l=Yn(c))}else h=new iO(h=Jn(c),l=Yn(c));l=1+c.da.$|0,Cc(c.A,h,Rc(c.C,f)),zc(c.A,h,Rc(c.C,l)),q1(u,h)}e=new AJ(e,r,i,o,a,s,u=u.ua());break n}}throw new pq(s)}return r=1+n.da.$|0,Cc(n.A,e,Rc(n.C,t)),zc(n.A,e,Rc(n.C,r)),e}function Yn(n){for(var t,e=En(n).aa,r=_n(n),i=new T1;Dn(n,zm());){var o=n;zn(o,zm()),t=rt(o),zn(o,Tm()),o=_n(o),q1(i,t=bq(new gq,t,o))}if(i=i.ua(),t=Cb(),null===(t=i.fG(t.zj)))throw new pq(t);return i=t.G(),t=t.H(),r=new PE(new a1(r,i),t),i=1+n.da.$|0,Cc(n.A,r,Rc(n.C,e)),zc(n.A,r,Rc(n.C,i)),r}function _n(n){var t,e=En(n).aa,r=In(n).Ia;return r instanceof LB?t=r.vn:Vt(n,"Expected string literal."),r=1+n.da.$|0,Cc(n.A,t,Rc(n.C,e)),zc(n.A,t,Rc(n.C,r)),t}function Xn(n){var t=En(n).aa;if(Dn(n,jm())){var e=tt(n);e=new LF(e)}else e=qF();var r=1+n.da.$|0;return Cc(n.A,e,Rc(n.C,t)),zc(n.A,e,Rc(n.C,r)),e}function Zn(n){var t=En(n).aa;if(Dn(n,jm())){zn(n,jm());var e=Pt(n);e=new LF(e)}else e=qF();var r=1+n.da.$|0;return Cc(n.A,e,Rc(n.C,t)),zc(n.A,e,Rc(n.C,r)),e}function nt(n){return Dn(n,jm())?(zn(n,jm()),Pt(n)):Vt(n,"Expected return type annotation")}function tt(n){return Dn(n,jm())?(zn(n,jm()),gn(n,!0)):Vt(n,"Expected a type annotation")}function et(n){return Dn(n,jm())?(zn(n,jm()),mn(n,!0)):Vt(n,"Expected a type annotation")}function rt(n){En(n);for(var t=En(n).aa,e=En(n).aa,r=xl(Al(),new(U(Mz).j)([Qm()])),i=En(n).aa,o=lt(n);;){var s=En(n).Ia;if(!US(r,s))break;var a=In(n).Ia;a=vn(n,o,a,s=lt(n)),Tc(n.A,o,s,a),o=a}for(r=o,o=1+n.da.$|0,Cc(n.A,r,Rc(n.C,i)),zc(n.A,r,Rc(n.C,o)),r instanceof YJ?(i=r.Gk,Dn(n,Dm())?(zn(n,Dm()),i=new HJ(i,r=rt(n))):i=r):i=r,r=1+n.da.$|0,Cc(n.A,i,Rc(n.C,e)),zc(n.A,i,Rc(n.C,r)),e=i;Dn(n,v$());){for(zn(n,v$()),zn(i=n,Nm()),r=i,o=new T1;Dn(r,p$());)q1(o,s=ut(r));r=o.ua(),zn(i,Tm()),i=r,Dn(n,s$())?(zn(n,s$()),r=new LF(r=Mn(n))):r=qF(),e=new XK(e,i,r)}return i=1+n.da.$|0,Cc(n.A,e,Rc(n.C,t)),zc(n.A,e,Rc(n.C,i)),e}function it(n){var t=En(n).aa;zn(n,j$());var e=st(n);e=new ZK(e);var r=1+n.da.$|0;return Cc(n.A,e,Rc(n.C,t)),zc(n.A,e,Rc(n.C,r)),e}function ot(n){var t=En(n).aa;zn(n,l$());var e=n.db;try{var r=At(n);zn(n,jm());var i=new LF(r)}catch(t){if(!((i=t instanceof my?t:new oH(t))instanceof kC))throw i instanceof oH?i.Wc:i;n.db=e,i=qF()}return e=(i=new FE(n,i,e=st(n))).Jb,i=i.Kb,e.f()?e=qF():e=new LF(new PJ(e=e.v(),new LF(i.yh))),i=new NK(e,i),e=1+n.da.$|0,Cc(n.A,i,Rc(n.C,t)),zc(n.A,i,Rc(n.C,e)),i}function st(n){var t=En(n).aa,e=n.db;try{var r=Ct(n);zn(n,Nm());var i=_h().r;zn(n,Tm());var o=new LF(new TK(r,i))}catch(t){if(!((o=t instanceof my?t:new oH(t))instanceof kC))throw o instanceof oH?o.Wc:o;n.db=e,o=qF()}if(o.f()){e=n.db;try{var s=Ct(n);zn(n,Nm()),Dn(n,y$())||Vt(n,"Expected at least one operation definition to implement this interface.");var a=new LF(s)}catch(t){if(!((a=t instanceof my?t:new oH(t))instanceof kC))throw a instanceof oH?a.Wc:a;n.db=e,a=qF()}if(a.f())a=qF();else{for(a=a.v(),s=new T1;Dn(n,y$());){o=En(e=n).aa;n:{zn(e,y$()),r=new FE(e,r=Dt(e),i=qt(e)),r=new FE(e,r,i=Zn(e)),zn(e,Dm());var u=new FE(e,r,i=Mn(e)),c=u.Jb;if(null!==c&&null!==(r=c.Jb)){var f=r.Kb;if(r=r.Jb,null!==f){i=f.Dc;var h=f.ge;r=new BK(r,i,h,f=f.Hd,c=c.Kb,u=u.Kb,at(e));break n}}throw new pq(u)}i=1+e.da.$|0,Cc(e.A,r,Rc(e.C,o)),zc(e.A,r,Rc(e.C,i)),q1(s,r)}a=new TK(a,s=s.ua()),zn(n,Tm()),a=new LF(a)}}else a=o;if(a.f()){if(a=new FE(n,a=Dt(n),s=mt(n)),a=new FE(n,a,s=at(n)),s=(e=new FE(n,a,s=kt(n))).Jb,r=e.Kb,null===s||(null===(o=s.Jb)||(a=o.Jb,i=o.Kb,s=s.Kb,null===r)))throw new pq(e);e=r.Ak,o=r.mi,r=r.zh,h=new wO(h=_h().r,a.Yd),Nc(n.A,a,h),i=new ZW(a,i),Nc(n.A,a,i),s=new BK(h,u=_h().r,e,o,f=qF(),r,s),Tc(n.A,a,r,s),_h(),a=xl(Al(),new(U(OK).j)([s])),a=new TK(i,a=dZ(h1(),a))}else a=a.v();return s=1+n.da.$|0,Cc(n.A,a,Rc(n.C,t)),zc(n.A,a,Rc(n.C,s)),a}function at(n){var t=En(n).aa,e=new lO("resume"),r=1+n.da.$|0;return Cc(n.A,e,Rc(n.C,t)),zc(n.A,e,Rc(n.C,r)),e}function ut(n){var t=En(n).aa;zn(n,p$());for(var e=ht(n),r=new T1;Dn(n,S$());){var i=n;zn(i,S$()),q1(r,i=ft(i))}return r=r.ua(),zn(n,Pm()),e=new vN(e,r,i=Tn(n)),r=1+n.da.$|0,Cc(n.A,e,Rc(n.C,t)),zc(n.A,e,Rc(n.C,r)),e}function ct(n){var t=En(n).aa,e=new T1,r=ft(n);for(q1(e,r);Dn(n,S$());)zn(n,S$()),q1(e,r=ft(n));return e=e.ua(),r=1+n.da.$|0,Cc(n.A,e,Rc(n.C,t)),zc(n.A,e,Rc(n.C,r)),e}function ft(n){var t=En(n).aa,e=rt(n);if(Dn(n,C$())){zn(n,C$());var r=ht(n);r=new LF(r)}else r=qF();r=(e=new FE(n,e,r)).Kb;var i=e.Jb;if(r instanceof LF)e=new LK(i,r.oa);else{if(r=e.Jb,qF()!==e.Kb)throw new pq(e);e=new qK(r)}return r=1+n.da.$|0,Cc(n.A,e,Rc(n.C,t)),zc(n.A,e,Rc(n.C,r)),e}function ht(n){var t=En(n).aa;n:{var e=En(n).Ia,r=L$().FM;if(null===r?null===e:r.d(e)){jn(n);var i=new MK}else{if(It(n)){if(i=Dt(n),Dn(n,qm())){if(zn(n,qm()),Dn(n,Lm()))zn(n,Lm()),e=_h().r;else{for(q1(e=new T1,r=ht(n));Dn(n,Bm());)zn(n,Bm()),q1(e,r=ht(n));zn(n,Lm()),e=e.ua()}i=new FJ(i,e);break n}if(null!==i){e=i.rk,r=i.Yd;var o=_h().r;if(null===o?null===e:o.d(e)){i=new OJ(new lO(r));break n}Vt(n,"Cannot use qualified names to bind a pattern variable")}throw new pq(i)}if(It(n))i=new OJ(i=At(n));else if(xt(n))i=new RK(i=Et(n));else if(null===(r=qm())?null===e:r.d(e)){for(zn(n,qm()),q1(i=new T1,e=ht(n));Dn(n,Bm());)zn(n,Bm()),q1(i,e=ht(n));i=i.ua(),zn(n,Lm()),i instanceof a1&&(e=i.h,(null===(r=_h().r)?null===e:r.d(e))&&Vt(n,"Pattern matching on tuples requires more than one element")),_h(),e=xl(Al(),new(U(DF).j)(["effekt"])),e=dZ(h1(),e),r="Tuple"+i.s(),i=new FJ(new wO(e,r),i)}else Vt(n,"Expected pattern")}}return e=1+n.da.$|0,Cc(n.A,i,Rc(n.C,t)),zc(n.A,i,Rc(n.C,e)),i}function lt(n){for(var t=xl(Al(),new(U(Mz).j)([Ym()])),e=En(n).aa,r=pt(n);;){var i=En(n).Ia;if(!US(t,i))break;var o=In(n).Ia;o=vn(n,r,o,i=pt(n)),Tc(n.A,r,i,o),r=o}return t=r,r=1+n.da.$|0,Cc(n.A,t,Rc(n.C,e)),zc(n.A,t,Rc(n.C,r)),t}function pt(n){for(var t=xl(Al(),new(U(Mz).j)([Am(),Im()])),e=En(n).aa,r=wt(n);;){var i=En(n).Ia;if(!US(t,i))break;var o=In(n).Ia;o=vn(n,r,o,i=wt(n)),Tc(n.A,r,i,o),r=o}return t=r,r=1+n.da.$|0,Cc(n.A,t,Rc(n.C,e)),zc(n.A,t,Rc(n.C,r)),t}function wt(n){for(var t=xl(Al(),new(U(Mz).j)([Vm(),Gm(),Km(),Hm()])),e=En(n).aa,r=dt(n);;){var i=En(n).Ia;if(!US(t,i))break;var o=In(n).Ia;o=vn(n,r,o,i=dt(n)),Tc(n.A,r,i,o),r=o}return t=r,r=1+n.da.$|0,Cc(n.A,t,Rc(n.C,e)),zc(n.A,t,Rc(n.C,r)),t}function dt(n){for(var t=xl(Al(),new(U(Mz).j)([Xm(),_m(),Zm()])),e=En(n).aa,r=vt(n);;){var i=En(n).Ia;if(!US(t,i))break;var o=In(n).Ia;o=vn(n,r,o,i=vt(n)),Tc(n.A,r,i,o),r=o}return t=r,r=1+n.da.$|0,Cc(n.A,t,Rc(n.C,e)),zc(n.A,t,Rc(n.C,r)),t}function vt(n){for(var t=xl(Al(),new(U(Mz).j)([n$(),Fm()])),e=En(n).aa,r=yt(n);;){var i=En(n).Ia;if(!US(t,i))break;var o=In(n).Ia;o=vn(n,r,o,i=yt(n)),Tc(n.A,r,i,o),r=o}return t=r,r=1+n.da.$|0,Cc(n.A,t,Rc(n.C,e)),zc(n.A,t,Rc(n.C,r)),t}function yt(n){for(var t=En(n).aa,e=function(n){var t=En(n).Ia,e=o$();if(null===e?null===t:e.d(t)){var r=En(n).aa;zn(n,o$()),zn(n,qm());var i=ct(n);zn(n,Lm());var o=Mn(n);if(Dn(n,s$())){zn(n,s$());var s=Mn(n)}else{var a=Xi().Kk;s=new HK(new _K(void 0,a))}var u=new YK(i,o,s),c=1+n.da.$|0;return Cc(n.A,u,Rc(n.C,r)),zc(n.A,u,Rc(n.C,c)),u}var f=a$();if(null===f?null===t:f.d(t)){var h=En(n).aa;zn(n,a$()),zn(n,qm());var l=ct(n);zn(n,Lm());var p=Mn(n);if(Dn(n,s$())){zn(n,s$());var w=new LF(Mn(n))}else w=qF();var d=new eV(l,p,w),v=1+n.da.$|0;return Cc(n.A,d,Rc(n.C,h)),zc(n.A,d,Rc(n.C,v)),d}var y=h$();if(null===y?null===t:y.d(t)){var b=En(n).aa;zn(n,h$());var g=Mn(n),m=new T1,$=ot(n);for(q1(m,$);Dn(n,l$());){var k=ot(n);q1(m,k)}var x=m.ua(),E=new FE(n,g,x),D=new nV(E.Jb,E.Kb),A=1+n.da.$|0;return Cc(n.A,D,Rc(n.C,b)),zc(n.A,D,Rc(n.C,A)),D}var I=A$();if(null===I?null===t:I.d(t)){var j=En(n).aa;zn(n,A$());var S=At(n),C=Mn(n),z=new WJ(S,C),N=1+n.da.$|0;return Cc(n.A,z,Rc(n.C,j)),zc(n.A,z,Rc(n.C,N)),z}var T=x$();if(null===T?null===t:T.d(t)){var q=En(n).aa;zn(n,x$());var L=n.db;try{var M=new LF(Ft(n))}catch(t){var R=t instanceof my?t:new oH(t);if(!(R instanceof kC))throw R instanceof oH?R.Wc:R;n.db=L,M=qF()}if(Dn(n,Nm()))var B=kt(n);else if(Dn(n,j$()))B=it(n);else{var O=Dt(n);B=new YJ(O)}var F=new JK(M,B),P=1+n.da.$|0;return Cc(n.A,F,Rc(n.C,q)),zc(n.A,F,Rc(n.C,P)),F}var K=E$();if(null===K?null===t:K.d(t)){var V=En(n).aa;zn(n,E$());var H=new tV(rt(n)),G=1+n.da.$|0;return Cc(n.A,H,Rc(n.C,V)),zc(n.A,H,Rc(n.C,G)),H}var J=d$();if(null===J?null===t:J.d(t)){var W=En(n).aa;zn(n,d$());var Q=qF(),Y=_h().r,_=Mt(n),X=_h().r;zn(n,Nm());var Z=Tn(n);zn(n,Tm());var nn=new JK(Q,new GK(Y,_,X,Z)),tn=1+n.da.$|0;return Cc(n.A,nn,Rc(n.C,W)),zc(n.A,nn,Rc(n.C,tn)),nn}var en=j$();if(null===en?null===t:en.d(t))return it(n);var rn=w$();if(null===rn?null===t:rn.d(t)){var on=En(n).aa;zn(n,w$());var sn=Dt(n),an=gt(n),un=new FE(n,sn,an),cn=un.Kb,fn=un.Jb;if(null===cn)throw new pq(un);var hn=cn.Dc,ln=cn.ge,pn=cn.Hd,wn=new GJ(qF(),fn,hn,ln,pn),dn=1+n.da.$|0;return Cc(n.A,wn,Rc(n.C,on)),zc(n.A,wn,Rc(n.C,dn)),wn}if(xt(n))return Et(n);if(It(n)){var vn=En(n).aa,yn=new YJ(Dt(n)),bn=1+n.da.$|0;return Cc(n.A,yn,Rc(n.C,vn)),zc(n.A,yn,Rc(n.C,bn)),yn}if(Dn(n,Um())||Dn(n,Jm())){var gn=En(n).Ia,mn=Um();if(null===mn?null===gn:mn.d(gn)){zn(n,Um());var $n=new QK(new HK(new _K(void 0,Xi().Kk)))}else{var kn=Jm();if(null===kn?null===gn:kn.d(gn)){zn(n,Jm());var xn=new QK(Tn(n));zn(n,Wm()),$n=xn}else Vt(n,"Expected hole"),$n=void 0}return $n}if(Dn(n,qm())){n:{zn(n,qm());var An=new T1,In=rt(n);for(q1(An,In);Dn(n,Bm());){zn(n,Bm());var jn=rt(n);q1(An,jn)}var Sn=An.ua();if(zn(n,Lm()),Sn instanceof a1){var Cn=Sn.h,Nn=Sn.Ec,qn=_h().r;if(null===qn?null===Cn:qn.d(Cn)){var Ln=Nn;break n}}_h();var Rn=xl(Al(),new(U(DF).j)(["effekt"])),Bn=dZ(h1(),Rn),On="Tuple"+Sn.s(),Fn=new kJ(new wO(Bn,On)),Pn=_h().r,Un=_h().r;Ln=new WK(Fn,Pn,Sn,Un)}return Ln}var Kn=En(n).Ia,Vn=Mm();if(null===Vn?null===Kn:Vn.d(Kn)){var Hn=En(n).aa;if(zn(n,Mm()),Dn(n,Rm())){zn(n,Rm());var Gn=_h().r}else{var Jn=new T1,Wn=rt(n);for(q1(Jn,Wn);Dn(n,Bm());){zn(n,Bm());var Qn=rt(n);q1(Jn,Qn)}zn(n,Rm()),Gn=Jn.ua()}_h();for(var Yn=kl(Al(),new(U(TE).j)([])),_n=new kJ(new wO(dZ(h1(),Yn),"Nil")),Xn=_h().r,Zn=_h().r,nt=_h().r,tt=new WK(_n,Xn,Zn,nt),et=gZ(Gn);!et.f();){var st=et.b(),at=tt;_h();var ut=kl(Al(),new(U(TE).j)([])),ft=new kJ(new wO(dZ(h1(),ut),"Cons")),ht=_h().r;_h();var lt=xl(Al(),new(U(EO).j)([st,at])),pt=dZ(h1(),lt),wt=_h().r;tt=new WK(ft,ht,pt,wt),et=et.c()}var dt=tt,vt=1+n.da.$|0;return Cc(n.A,dt,Rc(n.C,Hn)),zc(n.A,dt,Rc(n.C,vt)),dt}Vt(n,"Expected variables, literals, tuples, lists, holes or group")}(n);Dn(n,Om())||bt(n);){var r=En(n).Ia,i=Om();if(null===i?null===r:i.d(r))if(zn(n,Om()),r=Dt(n),bt(n)){if(null===(i=gt(n)))throw new pq(i);var o=i.ge,s=i.Hd;e=new JJ(e,r,i=i.Dc,o,s)}else e=new JJ(e,r,i=_h().r,s=_h().r,o=_h().r);else if(bt(n)){if(r=(r=e)instanceof YJ?new kJ(r.Gk):new SK(r),null===(e=gt(n)))throw new pq(e);s=e.ge,i=e.Hd,e=new WK(r,e=e.Dc,s,i)}}return r=e,e=1+n.da.$|0,Cc(n.A,r,Rc(n.C,t)),zc(n.A,r,Rc(n.C,e)),r}function bt(n){var t=n.ul.V(n.db-1|0).Ia,e=km();return!(null===t?null===e:t.d(e))&&(Dn(n,qm())||Dn(n,Mm())||Dn(n,Nm()))}function gt(n){bt(n)||Vt(n,"Expected at least one argument section (types, values, or blocks)");var t=mt(n);if(Dn(n,qm())){var e=En(n).aa;if(zn(n,qm()),Dn(n,Lm())){zn(n,Lm());var r=_h().r}else{r=new T1;var i=rt(n);for(q1(r,i);Dn(n,Bm());)zn(n,Bm()),q1(r,i=rt(n));zn(n,Lm()),r=r.ua()}i=1+n.da.$|0,Cc(n.A,r,Rc(n.C,e)),zc(n.A,r,Rc(n.C,i)),e=r}else e=_h().r;if(Dn(n,Nm())){r=En(n).aa,i=new T1;var o=$t(n);for(q1(i,o);Dn(n,Nm());)q1(i,o=$t(n));i=i.ua(),o=1+n.da.$|0,Cc(n.A,i,Rc(n.C,r)),zc(n.A,i,Rc(n.C,o)),n=i}else n=_h().r;return new Iq(t,e,n)}function mt(n){if(Dn(n,Mm())){var t=En(n).aa;zn(n,Mm());var e=new T1,r=gn(n,!0);for(q1(e,r);Dn(n,Bm());)zn(n,Bm()),q1(e,r=gn(n,!0));e=e.ua(),zn(n,Rm()),r=1+n.da.$|0,Cc(n.A,e,Rc(n.C,t)),zc(n.A,e,Rc(n.C,r)),n=e}else n=_h().r;return n}function $t(n){var t=En(n).aa,e=n.db;try{zn(n,Nm());var r=new YJ(Dt(n));zn(n,Tm());var i=new LF(r)}catch(t){if(!((i=t instanceof my?t:new oH(t))instanceof kC))throw i instanceof oH?i.Wc:i;n.db=e,i=qF()}return e=i.f()?kt(n):i.v(),i=1+n.da.$|0,Cc(n.A,e,Rc(n.C,t)),zc(n.A,e,Rc(n.C,i)),e}function kt(n){var t=En(n).aa;zn(n,Nm());var e=En(n).Ia,r=p$();if(null===r?null===e:r.d(e)){var i=new T1,o=ut(n);for(q1(i,o);Dn(n,p$());)q1(i,o=ut(n));i=i.ua(),o=_h().r,_h(),Al();var s=new lO("__tmpRes"),a=qF();s=xl(0,new(U(VJ).j)([new KJ(s,a)])),s=dZ(h1(),s),a=_h().r;var u=_h().r;u=new YJ(new wO(u,"__tmpRes"));var c=qF();i=new GK(o,s,a,new HK(new XK(u,i,c)))}else{e=n.db;try{if(s=En(n).aa,It(n)){a=_h().r,_h(),Al(),u=At(n),c=qF();var f=xl(0,new(U(VJ).j)([new KJ(u,c)])),h=new Iq(a,dZ(h1(),f),_h().r)}else h=qt(n);var l=1+n.da.$|0;Cc(n.A,h,Rc(n.C,s)),zc(n.A,h,Rc(n.C,l)),o=h,zn(n,Pm()),i=new LF(o)}catch(t){if(!((i=t instanceof my?t:new oH(t))instanceof kC))throw i instanceof oH?i.Wc:i;n.db=e,i=qF()}if(i.f())i=qF();else{if(null===(s=i.v()))throw new pq(s);i=new LF(i=new GK(i=s.Dc,o=s.ge,s=s.Hd,a=Tn(n)))}i.f()?i=new 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e=e.replace(Du().PQ,(n,e,r)=>(0!=(e.length%2|0)&&(n=(r=0|parseInt(r,10))>t?""+e+(1+r|0):n),n)),n.xj=1+n.xj|0,"(?:(?=("+e+r+"))\\"+(1+t|0)+")"}(n,t,e,o);case 63:return n.F=1+n.F|0,""+e+o+"?";default:return""+e+o}}function au(n){var t=n.lf,e=t.length;(1+n.F|0)===e&&eu(n,"\\ at end of pattern"),n.F=1+n.F|0;var r=t.charCodeAt(n.F);switch(r){case 100:case 68:case 104:case 72:case 115:case 83:case 118:case 86:case 119:case 87:case 112:case 80:switch(t=(n=fu(n,r)).nJ){case 0:return"\\p{"+n.go+"}";case 1:return"\\P{"+n.go+"}";case 2:return"["+n.go+"]";case 3:return xu(Du(),n.go);default:throw new Nj(t)}case 98:if("b{g}"===t.substring(n.F,4+n.F|0))eu(n,"\\b{g} is not supported");else{if(0==(320&n.Mc))return n.F=1+n.F|0,"\\b";yu(n,"\\b with UNICODE_CASE")}break;case 66:if(0==(320&n.Mc))return n.F=1+n.F|0,"\\B";yu(n,"\\B with UNICODE_CASE");break;case 65:return n.F=1+n.F|0,"^";case 71:eu(n,"\\G in the middle of a pattern is not supported");break;case 90:return 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r=1+n.F|0,0>(e=0|t.indexOf("\\E",r))?(n.F=t.length,ru(n,t.substring(r))):(n.F=2+e|0,ru(n,t.substring(r,e)));default:return iu(n,uu(n))}}function uu(n){var t=n.lf,e=gF(t,n.F);switch(e){case 48:return function(n){var t=n.lf,e=t.length,r=n.F,i=(1+r|0)i||7o||7(t=(3+r|0)(t=0|t.indexOf("}",e))&&eu(n,"Unclosed hexadecimal escape sequence"),e=cu(n,e,t,"hexadecimal"),n.F=1+t|0,n=e):(t=cu(n,e,2+e|0,"hexadecimal"),n.F=2+e|0,n=t),n;case 117:t=n.lf;var r=1+n.F|0;r=cu(n,r,e=4+r|0,"Unicode"),n.F=e;var i=2+e|0,o=4+i|0;return 55296!=(-1024&r)||"\\u"!==t.substring(e,i)||56320!=(-1024&(t=cu(n,i,o,"Unicode")))?n=r:(n.F=o,n=(64+(1023&r)|0)<<10|1023&t),n;case 78:eu(n,"\\N is not supported");break;case 97:return n.F=1+n.F|0,7;case 116:return n.F=1+n.F|0,9;case 110:return n.F=1+n.F|0,10;case 102:return n.F=1+n.F|0,12;case 114:return n.F=1+n.F|0,13;case 101:return n.F=1+n.F|0,27;case 99:return n.F=1+n.F|0,n.F===t.length&&eu(n,"Illegal control escape 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DJ){r=N;continue}throw z instanceof TJ&&Ps(e,"Should have been removed by BoxUnboxInference"),new pq(z)}throw new pq(i)}r=i.In}}function Op(n,t,e){return new bU(n=Vp(n,t,e))}function Fp(n,t,e){return new sH(n=Pp(n,t,e),t=nw(oe(e,ne().Mo,t),e))}function Pp(n,t,e){if(t instanceof YJ){var r=ve(e,t);if((r=fe(e,r))instanceof aV)return Kp(n,t,e);if(r instanceof uV)return Up(n,t,e);throw new pq(r)}return t instanceof GK?Kp(n,t,e):t instanceof ZK?Up(n,t,e):jp(n,t,e)}function Up(n,t,e){return t instanceof YJ?iw(n,ve(e,t),e):t instanceof GK?void Ps(e,"Using block literal "+t+" but an object was expected."):t instanceof ZK?new yU(n=Gp(n,t.ni,!1,e)):jp(n,t,e)}function Kp(n,t,e){if(t instanceof YJ){var r=ve(e,t),i=fe(e,r);if(i instanceof aV){var o=i.gd,s=i.Ke,a=i.hd,u=i.fd,c=i.$c;if(i=i.Gd,o===h1())var f=h1();else for(var h=f=new a1(new QU(f=o.b()),h1()),l=o.c();l!==h1();){var p=l.b();p=new a1(new QU(p),h1()),h=h.h=p,l=l.c()}if(h=t=>new SU(new bV("valueParam"),t=Xp(n,t,e)),a===h1())a=h1();else{for(p=l=new a1(h(l=a.b()),h1()),a=a.c();a!==h1();){var w=a.b();w=new a1(h(w),h1()),p=p.h=w,a=a.c()}a=l}if(h=n=>{if(null!==n)return new hH(n.Kf,n.Pg);throw new pq(n)},a===h1())h=h1();else{for(p=l=new a1(h(l=a.b()),h1()),w=a.c();w!==h1();){var d=w.b();d=new a1(h(d),h1()),p=p.h=d,w=w.c()}h=l}if(rk(r))return Op(n,t,e);if(r instanceof FH)return function(n,t,e,r,i,o,s,a){return e.f()||dl(),r.sg.f()||dl(),t.f()||dl(),new wU(n,t=_h().r,o,e=_h().r,i=new UU(i=new uH(new WU(a.xp,i),a,s)))}(o,s,u,i,f,a,h,r);if(r instanceof KH){if((t=Lp(r,e))===(l=Kg()))return function(n,t,e,r,i,o,s,a,u,c){return i.f()||dl(),o.sg.f()||dl(),r.f()||dl(),new wU(e,r=_h().r,a,i=_h().r,s=new UU(s=new cH(n=iw(n,c,t),s,u)))}(n,e,o,s,u,i,f,a,h,r);if((t=Lp(r,e))===(s=Vg()))return function(n,t,e,r,i,o,s,a,u,c){if(o.sg.f()||dl(),o=e=>{var r=new yV("etaParam");e=Zp(n,e,t),Qk();var i=xl(Al(),new(U(Ui).j)([r]));return new IU(r,e,i=bE(0,i))},r===h1())o=h1();else{var f=r.b(),h=f=new a1(o(f),h1());for(r=r.c();r!==h1();){var l=r.b();l=new a1(o(l),h1()),h=h.h=l,r=r.c()}o=f}if(f=n=>{if(null!==n)return new dU(n.te,n.wh,n.dn);throw new pq(n)},o===h1())h=h1();else for(r=h=new a1(f(h=o.b()),h1()),l=o.c();l!==h1();){var p=l.b();p=new a1(f(p),h1()),r=r.h=p,l=l.c()}if(f=new bV("etaBinding"),s=new qR(c=iw(n,c,t),s,u,h),o===h1())u=h1();else for(c=u=new a1((u=o.b()).te,h1()),h=o.c();h!==h1();)r=new a1((r=h.b()).te,h1()),c=c.h=r,h=h.c();return sr(),new wU(e,u,a,o,i=or(0,f,c=s.DG,s,new UU(i=new hH(f,i=Xp(n,i,t)))))}(n,e,o,u,c,i,f,a,h,r)}if(Q$(r))return iw(n,r,e);throw new pq(r)}throw i instanceof uV&&Js(e,"Expected a function but got an object of type "+i),new pq(i)}if(t instanceof GK){if(i=t.zk,c=t.Ak,o=t.mi,r=t.zh,i===h1())u=h1();else for(u=i.b(),t=u=new a1(de(e,u),h1()),i=i.c();i!==h1();)s=i.b(),s=new a1(de(e,s),h1()),t=t.h=s,i=i.c();if(o===h1())t=h1();else for(t=o.b(),i=t=new a1(de(e,t.Xb).na(),h1()),s=o.c();s!==h1();)f=s.b(),f=new a1(de(e,f.Xb).na(),h1()),i=i.h=f,s=s.c();if(c===h1())c=h1();else{for(i=c.b(),s=i=new a1(_p(n,i,e),h1()),c=c.c();c!==h1();)f=c.b(),f=new a1(_p(n,f,e),h1()),s=s.h=f,c=c.c();c=i}if(o===h1())o=h1();else{for(i=o.b(),s=i=new a1(Yp(n,i,e),h1()),o=o.c();o!==h1();)f=o.b(),f=new a1(Yp(n,f,e),h1()),s=s.h=f,o=o.c();o=i}return new wU(u,t,c,o,r=Bp(n,r,e))}if(!(t instanceof ZK))return jp(n,t,e);Js(e,"Expected a function but got an object instantiation: "+t)}function Vp(n,t,e){if((n=Hp(n,t,e))instanceof zU)return n;if(null!==n)return dD(e,n);throw new pq(n)}function Hp(n,t,e){if(t instanceof YJ){var r=ve(e,t);if(r instanceof XQ){var i=fe(e,r),o=to(eo(),i,e);Qk();var s=xl(Al(),new(U(Ui).j)([r.na()])),a=new MU(r,bE(0,s),Xp(n,o,e));return wD(e,a)}if(r instanceof uQ){var u=Qp(fe(e,r),eo().er,e),c=new LU(new vU(iw(n,r,e),eo().er,Zp(n,u,e)),_h().r,_h().r,_h().r);return wD(e,c)}if(rk(r))return rw(n,r,e);if(Q$(r))return Fp(n,t,e);throw new pq(r)}if(t instanceof _K)return new aH(t.ut,Xp(n,t.rp,e));if(t instanceof QJ)return new fH(Vp(n,t.fm,e),ve(e,t),Xp(n,se(e,t),e));if(t instanceof JK)return Fp(n,t.ij,e);if(t instanceof ZK||t instanceof tV||t instanceof GK)return Fp(n,t,e);if(t instanceof YK){var f=t.cm,h=t.dm,l=t.bm;if(null!==f&&(_h(),0===f.Ma(1))){var p=Wq(f,0);if(p instanceof qK){var w=new BU(Vp(n,p.ki,e),Bp(n,h,e),Bp(n,l,e));return wD(e,w)}}var d=Wp(n,_h().r,f,Bp(n,h,e),e),v=Wp(n,_h().r,_h().r,Bp(n,l,e),e),y=Ze();_h();var b=xl(Al(),new(U(WE).j)([d,v])),g=Ye(y,dZ(h1(),b));return wD(e,g)}if(t instanceof eV){var m=t.im,$=t.gm,k=t.hm,x=new yV("whileLoop"),E=new gU(_h().r,_h().r,_h().r,_h().r,im().Gq),D=ne().Mo,A=new LU(new dU(x,E,nw(oe(e,D,$),e)),_h().r,_h().r,_h().r),I=Bp(n,$,e),j=new HU(new bV("whileThen"),I.Kc,I,A);if(k.f())var S=qF();else{var C=k.v();S=new LF(Bp(n,C,e))}if(S.f())var z=new UU(new aH(void 0,im().Gq));else z=S.v();var N=z;n:{if(null!==m&&(_h(),0===m.Ma(1))){var T=Wq(m,0);if(T instanceof qK){var q=T.ki,L=e.w,M=e.S,R=e.K,B=e.Wb,O=new T1;e.Wb=O;var F=new BU(Vp(n,q,e),j,N);e.Wb=B,e.K=R,e.w=L,e.S=M;var P=yD(F,O);break n}}var K=e.w,V=e.S,H=e.K,G=e.Wb,J=new T1;e.Wb=J;var W=Wp(n,_h().r,m,j,e),Q=Wp(n,_h().r,_h().r,N,e),Y=Ze();_h();var _=xl(Al(),new(U(WE).j)([W,Q])),X=Ye(Y,dZ(h1(),_));e.Wb=G,e.K=H,e.w=K,e.S=V,P=yD(X,J)}var Z=new wU(_h().r,_h().r,_h().r,_h().r,P);return vD(e,x,Z),wD(e,A)}if(t instanceof XK){var nn=t.Nn,tn=t.Ln,en=t.Mn,rn=_h().r;if((null===rn?null===tn:rn.d(tn))&&qF()===en){var on=Vp(n,nn,e),sn=new OU(dD(e,on),_h().r,qF());return wD(e,sn)}var an=Vp(n,nn,e),un=dD(e,an);if(tn===h1())var cn=h1();else{for(var fn=tn.b(),hn=new a1(Jp(n,un,fn,e),h1()),ln=hn,pn=tn.c();pn!==h1();){var wn=pn.b(),dn=new a1(Jp(n,un,wn,e),h1());ln=ln.h=dn,pn=pn.c()}cn=hn}if(en.f())var vn=qF();else{var yn=en.v();vn=new LF(Wp(n,_h().r,_h().r,Bp(n,yn,e),e))}var bn=vn.ua(),gn=Ye(Ze(),vZ(cn,bn));return wD(e,gn)}if(t instanceof nV){var mn=t.nj,$n=t.mj,kn=t=>{t=t.Cn.v().Ae();var r=de(e,t);return t=ew(n,r,e),r=r.na(),bq(new gq,t,r)};if($n===h1())var xn=h1();else{for(var En=new a1(kn($n.b()),h1()),Dn=En,An=$n.c();An!==h1();){var In=new a1(kn(An.b()),h1());Dn=Dn.h=In,An=An.c()}xn=En}var jn=Cb(),Sn=xn.fG(jn.zj);if(null===Sn)throw new pq(Sn);var Cn=Sn.G(),zn=Sn.H(),Nn=Cn,Tn=new wU(_h().r,Nn,_h().r,zn,Bp(n,mn,e)),qn=t=>{if(null!==t)return Gp(n,t.qk,!0,e);throw new pq(t)};if($n===h1())var Ln=h1();else{for(var Mn=new a1(qn($n.b()),h1()),Rn=Mn,Bn=$n.c();Bn!==h1();){var On=new a1(qn(Bn.b()),h1());Rn=Rn.h=On,Bn=Bn.c()}Ln=Mn}var Fn=new VU(Tn,Ln);return wD(e,Fn)}if(t instanceof WJ){var Pn=t.Dk,Un=de(e,t.Ek),Kn=fe(e,Un),Vn=Zp(n,Kn,e);Qk();var Hn=xl(Al(),new(U(Ui).j)([Un.na()])),Gn=new IU(Un,Vn,bE(0,Hn)),Jn=_h().r;_h();var Wn=xl(Al(),new(U(OH).j)([Un.na()])),Qn=dZ(h1(),Wn),Yn=_h().r;_h();var _n=xl(Al(),new(U(jU).j)([Gn])),Xn=new PU(new wU(Jn,Qn,Yn,dZ(h1(),_n),Bp(n,Pn,e)));return wD(e,Xn)}if(t instanceof QK){var Zn=new RU;return wD(e,Zn)}if(t instanceof HJ){var nt=t.am,tt=ve(e,t);if(tt instanceof XQ){Qk();var et=xl(Al(),new(U(Ui).j)([tt.na()])),rt=new FU(tt,bE(0,et),Vp(n,nt,e));return wD(e,rt)}if(tt instanceof uQ){var it=Vp(n,nt,e),ot=ve(e,t),st=Qp(fe(e,ot),eo().fr,e),at=new vU(iw(n,ot,e),eo().fr,Zp(n,st,e)),ut=_h().r;_h();var ct=xl(Al(),new(U(TU).j)([it])),ft=new LU(at,ut,dZ(h1(),ct),_h().r);return wD(e,ft)}throw new pq(tt)}if(t instanceof JJ){var ht=t.kj,lt=t.lj,pt=t.jj,wt=Up(n,ht,e),dt=ne().$h,vt=oe(e,dt,t);if(vt===h1())var yt=h1();else{for(var bt=vt.b(),gt=new a1(Xp(n,bt,e),h1()),mt=gt,$t=vt.c();$t!==h1();){var kt=$t.b(),xt=new a1(Xp(n,kt,e),h1());mt=mt.h=xt,$t=$t.c()}yt=gt}if(lt===h1())var Et=h1();else{for(var Dt=lt.b(),At=new a1(Vp(n,Dt,e),h1()),It=At,jt=lt.c();jt!==h1();){var St=jt.b(),Ct=new a1(Vp(n,St,e),h1());It=It.h=Ct,jt=jt.c()}Et=At}if(pt===h1())var zt=h1();else{for(var Nt=pt.b(),Tt=new a1(Pp(n,Nt,e),h1()),qt=Tt,Lt=pt.c();Lt!==h1();){var Mt=Lt.b(),Rt=new a1(Pp(n,Mt,e),h1());qt=qt.h=Rt,Lt=Lt.c()}zt=Tt}var Bt=ae(e,ht),Ot=function(n,t,e){if(t instanceof JH)return t;Js(e,"Expected an operation")}(qe(),ve(e,t),e),Ft=Zp(n,Qp(Bt,Ot,e),e),Pt=KG(Ot.Bp.wp.s(),yt),Ut=new LU(new vU(wt,Ot,Ft),Pt,Et,zt);return wD(e,Ut)}if(t instanceof WK){var Kt=t.Ah,Vt=t.Wg,Ht=t.Vg;if(Kt instanceof SK){var Gt=Kt.Sl;if(Gt instanceof tV){var Jt=Gt.Fk;n:{var Wt=se(e,Jt);if(Wt instanceof kV){var Qt=Wt.Zg;if(Wt.tg instanceof aV&&Qt instanceof TN){var Yt=Qt;break n}}Ps(e,"Should be a boxed function type with a known capture set.")}var _t=Yt,Xt=Vp(n,Jt,e),Zt=ne().$h,te=oe(e,Zt,t);if(te===h1())var ee=h1();else{for(var re=te.b(),ie=new a1(Xp(n,re,e),h1()),ue=ie,ce=te.c();ce!==h1();){var he=ce.b(),le=new a1(Xp(n,he,e),h1());ue=ue.h=le,ce=ce.c()}ee=ie}if(Vt===h1())var pe=h1();else{for(var we=Vt.b(),ye=new a1(Vp(n,we,e),h1()),be=ye,ge=Vt.c();ge!==h1();){var me=ge.b(),$e=new a1(Vp(n,me,e),h1());be=be.h=$e,ge=ge.c()}pe=ye}if(Ht===h1())var ke=h1();else{for(var xe=Ht.b(),Ee=new a1(Pp(n,xe,e),h1()),De=Ee,Ae=Ht.c();Ae!==h1();){var Ie=Ae.b(),je=new a1(Pp(n,Ie,e),h1());De=De.h=je,Ae=Ae.c()}ke=Ee}if(MN(_t))n:{for(var Se=Ht;!Se.f();){var Ce=Se.b();if(!ow(n,Ce,e)){var ze=!1;break n}Se=Se.c()}ze=!0}else ze=!1;if(ze)var Ne=new YR(new LU(new bU(Xt),ee,pe,ke));else{var Te=new LU(new bU(Xt),ee,pe,ke);Ne=wD(e,Te)}return Ne}}if(Kt instanceof kJ)return function(n,t,e,r,i,o){var s=ne().$h,a=oe(o,s,t);if(a===h1())t=h1();else for(t=a.b(),s=t=new a1(Xp(n,t,o),h1()),a=a.c();a!==h1();){var u=a.b();u=new a1(Xp(n,u,o),h1()),s=s.h=u,a=a.c()}if(r===h1())r=h1();else{for(s=r.b(),a=s=new a1(Vp(n,s,o),h1()),r=r.c();r!==h1();)u=r.b(),u=new a1(Vp(n,u,o),h1()),a=a.h=u,r=r.c();r=s}if(i===h1())s=h1();else for(s=i.b(),a=s=new a1(Pp(n,s,o),h1()),u=i.c();u!==h1();){var c=u.b();c=new a1(Pp(n,c,o),h1()),a=a.h=c,u=u.c()}n:{if(HA(e)){if(a=Lp(e,o),u=Kg(),a===u){o=new cH(o=iw(n,e,o),t,r);break n}if(a=Lp(e,o),u=Vg(),a===u){o=new qR(o=iw(n,e,o),t,r,s);break n}}if(e instanceof FH)i.f()||Js(o,"Constructors cannot take block arguments."),o=new uH(new WU(e.xp,t),e,r);else if(e instanceof JH&&Ps(o,"Should have been translated to a method call!"),e instanceof VH&&Ps(o,"Should have been translated to a select!"),Q$(e)){if(a=ne().Vf,MN(n.JE(oe(o,a,e),o)))t:{for(;!i.f();){if(a=i.b(),!ow(n,a,o)){i=!1;break t}i=i.c()}i=!0}else i=!1;i?o=new YR(o=new LU(o=iw(n,e,o),t,r,s)):(n=new LU(n=iw(n,e,o),t,r,s),o=wD(o,n))}else{if(!rk(e))throw new pq(e);n=new LU(n=new bU(n=rw(n,e,o)),t,r,s),o=wD(o,n)}}return o}(n,t,ve(e,Kt),Vt,Ht,e);Kt instanceof SK&&Ps(e,"Should not happen. Unbox should have been inferred.")}throw t instanceof GJ&&Ps(e,"Should have been translated away (to explicit selection `@CAP.op()`) by capability passing."),new pq(t)}function Gp(n,t,e,r){var i,o=t.Wl,s=n=>{var t=ve(r,n);return bq(new gq,t,n)};if(o===h1())s=h1();else{var a=o.b(),u=a=new a1(s(a),h1());for(o=o.c();o!==h1();){var c=o.b();c=new a1(s(c),h1()),u=u.h=c,o=o.c()}s=a}if(Cb(),s=dE(vE(),s),a=ve(r,t),(t=Zp(n,ae(r,t),r))instanceof mU?i=t:Ps(r,"Should be an interface type."),(u=a.oj)===h1())u=h1();else{for(t=u.b(),a=t=new a1(s.q(t),h1()),u=u.c();u!==h1();)o=u.b(),o=new a1(s.q(o),h1()),a=a.h=o,u=u.c();u=t}if(t=t=>{if(null!==t){var i=t.Gn,o=t.Hn,s=t.Zl,a=t.wk,u=t.Fn;if(o===h1())var c=h1();else{c=o.b();var f=c=new a1(_p(n,c,r),h1());for(o=o.c();o!==h1();){var h=o.b();h=new a1(_p(n,h,r),h1()),f=f.h=h,o=o.c()}}if(i===h1())i=h1();else{for(f=i.b(),o=f=new a1(de(r,f),h1()),i=i.c();i!==h1();)h=i.b(),h=new a1(de(r,h),h1()),o=o.h=h,i=i.c();i=f}if(e)s=de(r,u),s=new LF(s=ew(n,s,r)),u=_h().r,f=_h().r;else{if(u=qF(),s===h1())f=h1();else for(f=s.b(),o=f=new a1(Yp(n,f,r),h1()),h=s.c();h!==h1();){var l=h.b();l=new a1(Yp(n,l,r),h1()),o=o.h=l,h=h.c()}if(s===h1())o=h1();else for(o=s.b(),h=o=new a1(de(r,o.Xb).na(),h1()),s=s.c();s!==h1();)l=s.b(),l=new a1(de(r,l.Xb).na(),h1()),h=h.h=l,s=s.c();s=u,u=f,f=o}return new HE(t=ve(r,t),i,f,c,u,s,a=Bp(n,a,r))}throw new pq(t)},u===h1())t=h1();else{for(a=s=new a1(t(s=u.b()),h1()),u=u.c();u!==h1();)o=new a1(t(o=u.b()),h1()),a=a.h=o,u=u.c();t=s}return new VC(i,t)}function Jp(n,t,e,r){_h(),Al();var i=e.Yl;return t=xl(0,new(U(Aq).j)([bq(new gq,t,i)])),Wp(n,dZ(h1(),t),e.sk,Bp(n,e.Xl,r),r)}function Wp(n,t,e,r,i){for(var o=t,s=null,a=null;o!==h1();){var u=o.b();if(null===u)throw new pq(u);for(u=(u=Sp(n,i,u.G())).x();u.y();){var c=new a1(u.t(),h1());null===a?s=c:a.h=c,a=c}o=o.c()}for(o=null===s?h1():s,s=e,u=a=null;s!==h1();){for(c=s.b(),c=Cp(n,i,c).x();c.y();){var f=new a1(c.t(),h1());null===u?a=f:u.h=f,u=f}s=s.c()}if(o=vZ(o,s=null===a?h1():a),s=new yV("k"),r=new wU(a=_h().r,u=_h().r,o,c=_h().r,r),r=vD(i,s,r),s=t=>{if(null!==t){var e=t.H();return t=Np(n,i,t.G()),bq(new gq,e,t)}throw new pq(t)},t===h1())t=h1();else{for(u=a=new a1(s(a=t.b()),h1()),t=t.c();t!==h1();)c=new a1(s(c=t.b()),h1()),u=u.h=c,t=t.c();t=a}for(Cb(),t=dE(vE(),t),s=e,u=a=null;s!==h1();){for(c=s.b(),c=Tp(n,i,c).x();c.y();)f=new a1(c.t(),h1()),null===u?a=f:u.h=f,u=f;s=s.c()}if(s=null===a?h1():a,t.f())e=s;else{for(t=new KR(t),a=s=null;e!==h1();){for(u=e.b(),u=Tp(n,i,u).x();u.y();)c=new a1(u.t(),h1()),null===a?s=c:a.h=c,a=c;e=e.c()}e=new a1(t,e=null===s?h1():s)}if(o===h1())o=h1();else{for(s=t=new a1(new hH((t=o.b()).Kf,t.Pg),h1()),o=o.c();o!==h1();)a=new a1(new hH((a=o.b()).Kf,a.Pg),h1()),s=s.h=a,o=o.c();o=t}return new GE(e,r,o)}function Qp(n,t,e){if(null!==(n=Te(qe(),n,e))){var r=n.Lc,i=n.tf;if(r instanceof nW){if(null!==t){var o=t.dx;r=t.aD,n=t.bx,e=t.cr,t=t.cx,mk();var s=_S(o,i);Cb(),s=SS(s);var a=S_(),u=new LI(s,a);if(i=KG(i=i.s(),o),n===h1())o=h1();else for(s=o=new a1((o=n.b()).na(),h1()),a=n.c();a!==h1();){var c=a.b();c=new a1(c.na(),h1()),s=s.h=c,a=a.c()}if((c=_A(t))===h1())s=h1();else for(a=s=new a1(new tW((s=c.b()).Lc.Y()),h1()),c=c.c();c!==h1();){var f=c.b();f=new a1(new tW(f.Lc.Y()),h1()),a=a.h=f,c=c.c()}if(o=vZ(o,s),s=n=>((n=n.Ch).f()&&Ms("Operation value parameters should have an annotated type."),RI(u,n.v())),r===h1())r=h1();else{for(c=a=new a1(s(a=r.b()),h1()),r=r.c();r!==h1();)f=new a1(s(f=r.b()),h1()),c=c.h=f,r=r.c();r=a}if(s=n=>((n=n.Mf).f()&&Ms("Operation block parameters should have an annotated type."),FI(u,n.v())),n===h1())n=h1();else{for(c=a=new a1(s(a=n.b()),h1()),n=n.c();n!==h1();)f=new a1(s(f=n.b()),h1()),c=c.h=f,n=n.c();n=a}return new aV(i,o,r,n,e=RI(u,e),t=BI(u,t))}throw new pq(t)}r instanceof ZJ&&Ps(e,"Cannot select from an extern interface")}throw new pq(n)}function Yp(n,t,e){return ew(n,de(e,t.Xb),e)}function _p(n,t,e){return tw(n,de(e,t.Ug),e)}function Xp(n,t,e){if(t instanceof kV){var r=t.Zg;return new JU(n=Zp(n,t.tg,e),e=nw(r,e))}if(t instanceof EV)return new QU(t.ve);if(t instanceof xV){r=t.pi;var i=t.oi;if(i===h1())e=h1();else{var o=t=new a1(Xp(n,t=i.b(),e),h1());for(i=i.c();i!==h1();){var s=i.b();s=new a1(Xp(n,s,e),h1()),o=o.h=s,i=i.c()}e=t}return new WU(r,e)}throw new pq(t)}function Zp(n,t,e){if(t instanceof aV){var r=t.gd,i=t.Ke,o=t.hd,s=t.fd,a=t.$c,u=_A(t.Gd);if(u===h1())var c=h1();else{for(c=t=new a1(Zp(n,t=u.b(),e),h1()),u=u.c();u!==h1();){var f=u.b();f=new a1(Zp(n,f,e),h1()),c=c.h=f,u=u.c()}c=t}if(s===h1())t=h1();else for(u=t=new a1(Zp(n,t=s.b(),e),h1()),f=s.c();f!==h1();){var h=f.b();h=new a1(Zp(n,h,e),h1()),u=u.h=h,f=f.c()}if(t=vZ(t,c),i.s()!==t.s()&&(vl(),qf(),s="Internal error: number of block parameters does not match number of capture parameters.\n |\n | Blockparams: "+s+"\n | Effects: "+c+"\n | Captures: "+i+"\n |",wl(0,Nf(qf(),s))),o===h1())o=h1();else{for(c=s=new a1(Xp(n,s=o.b(),e),h1()),o=o.c();o!==h1();)u=new a1(Xp(n,u=o.b(),e),h1()),c=c.h=u,o=o.c();o=s}return new gU(r,i,o,t,n=Xp(n,a,e))}if(t instanceof uV){if(r=t.Lc,(o=t.tf)===h1())n=h1();else{for(a=i=new a1(Xp(n,i=o.b(),e),h1()),o=o.c();o!==h1();)s=new a1(Xp(n,s=o.b(),e),h1()),a=a.h=s,o=o.c();n=i}return new mU(r,n)}throw new pq(t)}function nw(n,t){if(n instanceof LH){Wi();var e=xl(Al(),new(U(DF).j)([""," should be a concrete capture set in this phase."]));Ps(t,e=Ji(new AS(e),kl(Al(),new j([n]))))}if(n instanceof TN)return n.tc.ya(new ME(n=>n));throw new pq(n)}function tw(n,t,e){return new SU(t,n=Xp(n,le(e,t),e))}function ew(n,t,e){return n=Zp(n,fe(e,t),e),Qk(),new IU(t,n,e=bE(0,e=xl(Al(),new(U(Ui).j)([t]))))}function rw(n,t,e){return new hH(t,n=Xp(n,le(e,t),e))}function iw(n,t,e){return new dU(t,n=Zp(n,fe(e,t),e),e=nw(oe(e,ne().Vf,t),e))}function ow(n,t,e){return(t=ie(e,ne().Mo,t))instanceof LF&&MN(n.JE(t.oa,e))}function sw(){return zp||(zp=new qp),zp}function aw(){}function uw(){}function cw(n){return uf().Oa.U(n)?uf().Oa.q(n):n}function fw(n,t){if(uf().Oa.U(t))return uf().Oa.q(t);if(t instanceof hH){var e=t.hn,r=cw(t.Xf);return new hH(r,n=bw(n,e))}if(t instanceof aH)return new aH(e=t.en,n=bw(n,t.Cq));if(t instanceof cH){var i=t.Xo;if(r=t.fn,e=pw(n,t.Jl),i===h1())t=h1();else{var o=t=new a1(bw(n,t=i.b()),h1());for(i=i.c();i!==h1();){var s=i.b();s=new a1(bw(n,s),h1()),o=o.h=s,i=i.c()}}if(r===h1())n=h1();else{for(i=o=new a1(fw(n,o=r.b()),h1()),r=r.c();r!==h1();)s=new a1(fw(n,s=r.b()),h1()),i=i.h=s,r=r.c();n=o}return new cH(e,t,n)}if(t instanceof uH){if(r=t.Hl,e=t.Il,null!==(t=t.Wo)){if(s=t.cp,t=cw(t.bp),s===h1())o=h1();else for(i=o=new a1(bw(n,o=s.b()),h1()),s=s.c();s!==h1();){var a=s.b();a=new a1(bw(n,a),h1()),i=i.h=a,s=s.c()}t=new WU(t,o)}else Ol(Fl(),"Should never happen!"),t=void 0;if(r=cw(r),e===h1())n=h1();else{for(i=o=new a1(fw(n,o=e.b()),h1()),e=e.c();e!==h1();)s=new a1(fw(n,s=e.b()),h1()),i=i.h=s,e=e.c();n=o}return new uH(t,r,n)}return t instanceof fH?(o=t.Yo,e=t.Dq,new fH(r=fw(n,t.gn),t=cw(o),n=bw(n,e))):t instanceof sH?(e=t.Ss,new sH(n=pw(n,t.Gl),e=mw(e))):void Ol(Fl(),"Should never happen!")}function hw(n,t){if(uf().Oa.U(t))return uf().Oa.q(t);if(t instanceof qR){var e=t.Ro,r=t.$m,i=t.Yj;if(t=pw(n,t.Xj),e===h1())var o=h1();else{var s=o=new a1(bw(n,o=e.b()),h1());for(e=e.c();e!==h1();){var a=e.b();a=new a1(bw(n,a),h1()),s=s.h=a,e=e.c()}}if(r===h1())r=h1();else{for(e=s=new a1(fw(n,s=r.b()),h1()),r=r.c();r!==h1();)a=new a1(fw(n,a=r.b()),h1()),e=e.h=a,r=r.c();r=s}if(i===h1())n=h1();else{for(e=s=new a1(pw(n,s=i.b()),h1()),i=i.c();i!==h1();)a=new a1(pw(n,a=i.b()),h1()),e=e.h=a,i=i.c();n=s}i=new qR(t,o,r,n)}else t instanceof YR?i=new YR(n=lw(n,t.Yi)):t instanceof zU?i=fw(n,t):Ol(Fl(),"Should never happen!");return i}function lw(n,t){if(PC(new FC(n),t))return new FC(n),UC(t,n=uf().Oa);if(t instanceof KU){var e=t.gk;if(t=t.$i,e===h1())var r=h1();else{var i=r=new a1(ww(n,r=e.b()),h1());for(e=e.c();e!==h1();){var o=e.b();o=new a1(ww(n,o),h1()),i=i.h=o,e=e.c()}}return new KU(r,n=lw(n,t))}if(t instanceof UU)return new UU(n=fw(n,t.ei));if(t instanceof HU)return e=t.Eq,i=t.aj,r=t.bj,new HU(t=cw(t.Nl),e=bw(n,e),i=lw(n,i),n=lw(n,r));if(t instanceof LU){var s=t.Ll;if(e=t.ak,r=t.ci,t=pw(n,t.di),s===h1())i=h1();else for(o=i=new a1(bw(n,i=s.b()),h1()),s=s.c();s!==h1();){var a=s.b();a=new a1(bw(n,a),h1()),o=o.h=a,s=s.c()}if(e===h1())e=h1();else{for(s=o=new a1(fw(n,o=e.b()),h1()),e=e.c();e!==h1();)a=new a1(fw(n,a=e.b()),h1()),s=s.h=a,e=e.c();e=o}if(r===h1())n=h1();else{for(s=o=new a1(pw(n,o=r.b()),h1()),r=r.c();r!==h1();)a=new a1(pw(n,a=r.b()),h1()),s=s.h=a,r=r.c();n=o}return new LU(t,i,e,n)}if(t instanceof BU)return i=t.ck,r=t.bk,new BU(t=fw(n,t.nn),i=lw(n,i),n=lw(n,r));if(t instanceof OU){if(o=t.dk,r=t.ek,t=fw(n,t.on),o===h1())i=h1();else for(e=i=new a1(kw(n,i=o.b()),h1()),o=o.c();o!==h1();)s=new a1(kw(n,s=o.b()),h1()),e=e.h=s,o=o.c();return r.f()?n=qF():n=new LF(lw(n,r=r.v())),new OU(t,i,n)}if(t instanceof PU)return new PU(n=pw(n,t.fk));if(t instanceof qU)return e=t.kn,i=t.Kl,r=t.$j,new qU(t=cw(t.jn),e=fw(n,e),i=cw(i),n=lw(n,r));if(t instanceof GU)return e=t.sn,i=t.Fq,r=t.ik,new GU(t=cw(t.rn),e=hw(n,e),i=cw(i),n=lw(n,r));if(t instanceof MU)return i=t.$o,r=t.ln,new MU(t=cw(t.mn),i=mw(i),n=bw(n,r));if(t instanceof FU)return i=t.ap,r=t.qn,new FU(t=cw(t.pn),i=mw(i),n=fw(n,r));if(t instanceof VU){if(e=t.Ml,t=pw(n,t.hk),e===h1())n=h1();else{for(i=r=new a1(dw(n,r=e.b()),h1()),e=e.c();e!==h1();)o=new a1(dw(n,o=e.b()),h1()),i=i.h=o,e=e.c();n=r}return new VU(t,n)}if(t instanceof RU)return t;Ol(Fl(),"Should never happen!")}function pw(n,t){if(uf().Oa.U(t))return uf().Oa.q(t);if(t instanceof dU){var e=t.Um,r=t.qq;return new dU(t=cw(t.Jf),n=gw(n,e),r=mw(r))}if(t instanceof wU){var i=t.Ti,o=t.Oo,s=t.vh;if(r=t.pg,t=t.If,i===h1())e=h1();else{var a=e=new a1(cw(e=i.b()),h1());for(i=i.c();i!==h1();){var u=i.b();u=new a1(cw(u),h1()),a=a.h=u,i=i.c()}}if(o===h1())o=h1();else{for(i=a=new a1(cw(a=o.b()),h1()),o=o.c();o!==h1();)u=new a1(cw(u=o.b()),h1()),i=i.h=u,o=o.c();o=a}if(s===h1())s=h1();else{for(i=a=new a1(yw(n,a=s.b()),h1()),s=s.c();s!==h1();)u=new a1(yw(n,u=s.b()),h1()),i=i.h=u,s=s.c();s=a}if(r===h1())r=h1();else{for(i=a=new a1(yw(n,a=r.b()),h1()),r=r.c();r!==h1();)u=new a1(yw(n,u=r.b()),h1()),i=i.h=u,r=r.c();r=a}return new wU(e,o,s,r,n=lw(n,t))}return t instanceof vU?(e=t.vl,r=t.Vm,new vU(t=pw(n,t.bi),e=cw(e),n=gw(n,r))):t instanceof bU?new bU(n=fw(n,t.Wj)):t instanceof yU?new yU(n=dw(n,t.Vj)):void Ol(Fl(),"Should never happen!")}function ww(n,t){if(uf().Oa.U(t))return uf().Oa.q(t);if(t instanceof xU){var e=t.Vi;return new xU(t=cw(t.Wi),n=pw(n,e))}if(t instanceof EU){var r=t.Ms;return e=t.xl,new EU(t=cw(t.yl),r=bw(n,r),n=hw(n,e))}Ol(Fl(),"Should never happen!")}function dw(n,t){if(uf().Oa.U(t))return uf().Oa.q(t);if(null!==t){var e=t.Al;if(null!==(t=t.uq)){var r=t.Zm;if(t=cw(t.Ym),r===h1())var i=h1();else{var o=i=new a1(bw(n,i=r.b()),h1());for(r=r.c();r!==h1();){var s=r.b();s=new a1(bw(n,s),h1()),o=o.h=s,r=r.c()}}t=new mU(t,i)}else Ol(Fl(),"Should never happen!"),t=void 0;if(e===h1())n=h1();else{for(o=i=new a1(vw(n,i=e.b()),h1()),e=e.c();e!==h1();)r=new a1(vw(n,r=e.b()),h1()),o=o.h=r,e=e.c();n=i}return new VC(t,n)}Ol(Fl(),"Should never happen!")}function vw(n,t){if(null!==t){var e=t.xq,r=t.Os,i=t.Fl,o=t.Dl,s=t.El,a=t.Cl;if(t=cw(t.cn),e===h1())var u=h1();else{var c=u=new a1(cw(u=e.b()),h1());for(e=e.c();e!==h1();){var f=e.b();f=new a1(cw(f),h1()),c=c.h=f,e=e.c()}}if(r===h1())r=h1();else{for(e=c=new a1(cw(c=r.b()),h1()),r=r.c();r!==h1();)f=new a1(cw(f=r.b()),h1()),e=e.h=f,r=r.c();r=c}if(i===h1())i=h1();else{for(e=c=new a1(yw(n,c=i.b()),h1()),i=i.c();i!==h1();)f=new a1(yw(n,f=i.b()),h1()),e=e.h=f,i=i.c();i=c}if(o===h1())o=h1();else{for(e=c=new a1(yw(n,c=o.b()),h1()),o=o.c();o!==h1();)f=new a1(yw(n,f=o.b()),h1()),e=e.h=f,o=o.c();o=c}return s.f()?s=qF():s=new LF(yw(n,s=s.v())),new HE(t,u,r,i,o,s,n=lw(n,a))}Ol(Fl(),"Should never happen!")}function yw(n,t){if(uf().Oa.U(t))return uf().Oa.q(t);if(t instanceof SU){var e=t.Pg;return new SU(t=cw(t.Kf),n=bw(n,e))}if(t instanceof IU){var r=t.wh;return e=t.dn,new IU(t=cw(t.te),n=gw(n,r),e=mw(e))}Ol(Fl(),"Should never happen!")}function bw(n,t){if(t instanceof QU)return new QU(n=cw(t.Hq));if(t instanceof WU){var e=t.cp;if(t=cw(t.bp),e===h1())n=h1();else{var r=e.b(),i=r=new a1(bw(n,r),h1());for(e=e.c();e!==h1();){var o=e.b();o=new a1(bw(n,o),h1()),i=i.h=o,e=e.c()}n=r}return new WU(t,n)}if(t instanceof JU)return r=t.tn,new JU(n=gw(n,t.Ol),t=mw(r));Ol(Fl(),"Should never happen!")}function gw(n,t){if(t instanceof gU){var e=t.Xm,r=t.Wm,i=t.wl,o=t.Ui;if(t=t.Wf,e===h1())var s=h1();else{var a=s=new a1(cw(s=e.b()),h1());for(e=e.c();e!==h1();){var u=e.b();u=new a1(cw(u),h1()),a=a.h=u,e=e.c()}}if(r===h1())r=h1();else{for(e=a=new a1(cw(a=r.b()),h1()),r=r.c();r!==h1();)u=new a1(cw(u=r.b()),h1()),e=e.h=u,r=r.c();r=a}if(i===h1())i=h1();else{for(e=a=new a1(bw(n,a=i.b()),h1()),i=i.c();i!==h1();)u=new a1(bw(n,u=i.b()),h1()),e=e.h=u,i=i.c();i=a}if(o===h1())o=h1();else{for(e=a=new a1(gw(n,a=o.b()),h1()),o=o.c();o!==h1();)u=new a1(gw(n,u=o.b()),h1()),e=e.h=u,o=o.c();o=a}return new gU(s,r,i,o,n=bw(n,t))}if(t instanceof mU){if(i=t.Zm,t=cw(t.Ym),i===h1())n=h1();else{for(s=o=new a1(bw(n,o=i.b()),h1()),i=i.c();i!==h1();)r=new a1(bw(n,r=i.b()),h1()),s=s.h=r,i=i.c();n=o}return new mU(t,n)}Ol(Fl(),"Should never happen!")}function mw(n){return n.ya(new ME(n=>cw(n)))}function $w(n,t){if(null!==t){var e=t.wq,r=t.Ns,i=t.an,o=t.bn,s=t.Bl;if(t=t.vq,s===h1())n=h1();else{var a=s.b(),u=a=new a1(ww(n,a),h1());for(s=s.c();s!==h1();){var c=s.b();c=new a1(ww(n,c),h1()),u=u.h=c,s=s.c()}n=a}return new HC(e,r,i,o,n,t)}throw new pq(t)}function kw(n,t){if(null!==t){var e=t.H();return n=pw(n,t.G()),bq(new gq,e,n)}throw new pq(t)}function 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a=_h().r,ei(),Al(),ei(),_h(),Al(),u=u.te,u=xl(0,new(U(qD).j)([Cr(n,u)])),t=xl(0,new(U(gz).j)([e,ti(0,dZ(h1(),u),t,f)])),t=ti(0,s,a,Dr(Ar(),"shift",t)),o=Cr(n,o),bq(new gq,o,t)}qF()===u&&Ps(i,"Effect handler should take continuation")}throw new pq(t)},o===h1())t=h1();else{var s=o.b(),a=s=new a1(t(s),h1());for(o=o.c();o!==h1();){var u=o.b();u=new a1(t(u),h1()),a=a.h=u,o=o.c()}t=s}return new hB(t)}(t,n,new wB(f),r,i))}throw new pq(n)},u===h1())o=h1();else{for(a=s=new a1(o(s=u.b()),h1()),u=u.c();u!==h1();)c=new a1(o(c=u.b()),h1()),a=a.h=c,u=u.c();o=s}if(null===(s=Mw(t,e,r,i)))throw new pq(s);return e=s.G(),s=s.H(),ei(),ei(),_h(),a=xl(Al(),new(U(qD).j)([f])),function(n){return n=xl(Al(),new(U(gz).j)([n])),Dr(Ar(),"handleMonadic",n)}(ti(0,dZ(h1(),a),vZ(o,s),e))}Ps(i,"Body of the try is expected to be a block literal in core.")}if(e instanceof PU)return e=e.fk,ei(),e=xl(Al(),new(U(gz).j)([Iw(t,e,r,i)])),Dr(Ar(),"withRegion",e);if(e instanceof RU)return 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o=t=>{if(null!==t){var i=t.cn,o=t.xq,s=t.Os,a=t.Fl,u=t.Dl,c=t.El,f=t.Cl;if(c instanceof LF){if(t=c.oa,u.f()||wl(vl(),"Should have been moved to the continuation by core.Transformer"),s=new uK(u=new Ow),a===h1())a=h1();else{c=a.b();var h=c=new a1(_w(n,c),h1());for(a=a.c();a!==h1();){var l=a.b();l=new a1(_w(n,l),h1()),h=h.h=l,a=a.c()}a=c}return a=new a1(s,a),_h(),u=xl(Al(),new(U(Yz).j)([new HB(u)])),u=new UB(u=dZ(h1(),u)),s=_h().r,_h(),t=xl(Al(),new(U(aK).j)([Xw(n,t)])),f=new lH(s,t=dZ(h1(),t),f=nd(n,f,e,r)),new nA(i,o=new lH(o,a,f=new mK(u,f)))}if(qF()===c)return new nA(i,o=rd(n,new wU(o,s,a,u,f),e,r))}throw new pq(t)};if(i===h1())o=h1();else{var s=i.b(),a=s=new a1(o(s),h1());for(i=i.c();i!==h1();){var u=i.b();u=new a1(o(u),h1()),a=a.h=u,i=i.c()}o=s}return new Jz(t,o)}throw new pq(t)}function Yw(n,t,e,r){if(t instanceof DU){var i=t.tq,o=t.Bv,s=t.To,a=t.sq,u=t.Av;t=t.So,new Ow;var c=n=>{if(null!==n)return new uK(n=new Ow);throw new pq(n)};if(a===h1())h1();else{var f=a.b();f=new 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gK(gn,bn)}if(t instanceof HU){var An=t.Nl,In=t.bj;return new kK(An,nd(n,t.aj,e,r),nd(n,In,e,r))}if(t instanceof GU){var jn=t.rn,Sn=t.sn,Cn=t.ik,zn=new Ow,Nn=QD(_D(e,new HB(zn)),jn),Tn=new sK(jn,function(n,t){return n=eo().Cp,_h(),t=xl(Al(),new(U(nO).j)([t])),t=dZ(h1(),t),new nK(n,t)}(U$(),Gw(n,Sn.Go()))),qn=nd(n,Cn,Nn,r),Ln=ed(n,Sn,e,r),Mn=_h().r;_h();var Rn=xl(Al(),new(U(WB).j)([new uK(zn),Tn]));return new xK(Ln,new lH(Mn,dZ(h1(),Rn),qn))}if(t instanceof qU){var Bn=t.jn,On=t.kn,Fn=t.Kl,Pn=t.$j,Un=YD(e,Bn,XD(e,Fn).$s);return new fK(Bn,td(n,On,e,r),Fn,XD(e,Fn),nd(n,Pn,Un,r))}if(t instanceof OU){var Kn=t.dk,Vn=t.ek,Hn=td(n,t.on,e,r),Gn=t=>{if(null!==t){var i=t.H(),o=t.G();if(qe(),i instanceof FH||(Js(r,"Expected a constructor"),i=void 0),null===o)throw new pq(o);t=o.Ti;var s=o.If,a=vZ(o.vh,o.pg);if(a===h1())o=h1();else{o=a.b();var u=o=new a1(Hw(n,o),h1());for(a=a.c();a!==h1();){var c=a.b();c=new a1(Hw(n,c),h1()),u=u.h=c,a=a.c()}}return t=new lH(t,o,s=nd(n,s,e,r)),bq(new gq,i,t)}throw new pq(t)};if(Kn===h1())var Jn=h1();else{for(var Wn=new a1(Gn(Kn.b()),h1()),Qn=Wn,Yn=Kn.c();Yn!==h1();){var _n=new a1(Gn(Yn.b()),h1());Qn=Qn.h=_n,Yn=Yn.c()}Jn=Wn}if(Vn.f())var Xn=qF();else{var Zn=Vn.v();Xn=new LF(nd(n,Zn,e,r))}return new dK(Hn,Jn,Xn)}if(t instanceof BU){var nt=t.ck,tt=t.bk;return new wK(td(n,t.nn,e,r),nd(n,nt,e,r),nd(n,tt,e,r))}if(t instanceof UU)return new bK(td(n,t.ei,e,r));if(t instanceof RU)return new pK;throw new pq(t)}function td(n,t,e,r){if(t instanceof aH)return new bH(e=t.en,n=Gw(n,t.Cq));if(t instanceof hH)return new xH(e=t.Xf,n=Gw(n,t.hn));if(t instanceof cH){var i=t.Jl,o=t.Xo,s=t.fn;if(null!==s){if(i=Ww(n,i,e,r),o===h1())t=h1();else{var a=t=new a1(Gw(n,t=o.b()),h1());for(o=o.c();o!==h1();){var u=o.b();u=new a1(Gw(n,u),h1()),a=a.h=u,o=o.c()}}if(s===h1())n=h1();else{for(a=o=new a1(td(n,o=s.b(),e,r),h1()),s=s.c();s!==h1();)u=new a1(td(n,u=s.b(),e,r),h1()),a=a.h=u,s=s.c();n=o}return new mH(i,t,n)}}if(t instanceof 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Ai(bC().u(),bC().u(),bC().u(),bC().u()),T=new Ai(bC().u(),bC().u(),bC().u(),bC().u());C.ba=new MO(N,T,z);try{if(k===h1())var q=h1();else{for(var L=new a1(xd(k.b(),e),h1()),M=L,R=k.c();R!==h1();){var B=new a1(xd(R.b(),e),h1());M=M.h=B,R=R.c()}q=L}if(x===h1())var O=h1();else{for(var F=x.b(),P=new a1(hd(n,F,e),h1()),U=P,K=x.c();K!==h1();){var V=K.b(),H=new a1(hd(n,V,e),h1());U=U.h=H,K=K.c()}O=P}if(E===h1())var G=h1();else{for(var J=E.b(),W=new a1(ld(n,J,e),h1()),Q=W,Y=E.c();Y!==h1();){var _=Y.b(),X=new a1(ld(n,_,e),h1());Q=Q.h=X,Y=Y.c()}G=W}var Z=TA(e,new qE(()=>{if(AA(e,O),IA(e,G),D.f())return qF();var t=D.v();return new LF($d(n,t,e))}));if(Z.f())var nn=qF();else nn=new LF(Z.v().H());if(Z.f())var tn=qF();else tn=new LF(Z.v().G());var en=new eG(A,q,O,G,nn,tn,t)}finally{C.ba=z}e.K=S,e.w=I,e.S=j,$A(e,$,en)}else if(t instanceof NJ){var rn=t.ip,on=t.Kw,sn=mA(e,rn),an=e.w,un=e.S,cn=e.K,fn=e.K,hn=fn.ba,ln=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),pn=new Ai(bC().u(),bC().u(),bC().u(),bC().u());fn.ba=new MO(ln,pn,hn);try{if(on===h1())var wn=h1();else{for(var dn=new a1(xd(on.b(),e),h1()),vn=dn,yn=on.c();yn!==h1();){var bn=new a1(xd(yn.b(),e),h1());vn=vn.h=bn,yn=yn.c()}wn=dn}var gn=new nW(sn,wn,_h().r)}finally{fn.ba=hn}e.K=cn,e.w=an,e.S=un,kA(e,rn,gn)}else if(t instanceof MJ){var mn=t.mt,$n=t.uC,kn=t.vC,xn=e.w,En=e.S,Dn=e.K,An=e.K,In=An.ba,jn=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),Sn=new Ai(bC().u(),bC().u(),bC().u(),bC().u());An.ba=new MO(jn,Sn,In);try{if($n===h1())var Cn=h1();else{for(var zn=new a1(xd($n.b(),e),h1()),Nn=zn,Tn=$n.c();Tn!==h1();){var qn=new a1(xd(Tn.b(),e),h1());Nn=Nn.h=qn,Tn=Tn.c()}Cn=zn}}finally{An.ba=In}e.K=Dn,e.w=xn,e.S=En;var Ln=e.w,Mn=e.S,Rn=e.K,Bn=e.K,On=Bn.ba,Fn=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),Pn=new Ai(bC().u(),bC().u(),bC().u(),bC().u());Bn.ba=new MO(Fn,Pn,On);try{for(var Un=Cn;!Un.f();){var Kn=Un.b();DA(e,Kn),Un=Un.c()}var Vn=new gV(mA(e,mn),Cn,dd(n,kn,e))}finally{Bn.ba=On}e.K=Rn,e.w=Ln,e.S=Mn,kA(e,mn,Vn)}else if(t instanceof DJ){var Hn=t.gt,Gn=t.lC,Jn=t.kC,Wn=e.w,Qn=e.S,Yn=e.K,_n=e.K,Xn=_n.ba,Zn=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),nt=new Ai(bC().u(),bC().u(),bC().u(),bC().u());_n.ba=new MO(Zn,nt,Xn);try{if(Gn===h1())var tt=h1();else{for(var et=new a1(xd(Gn.b(),e),h1()),rt=et,it=Gn.c();it!==h1();){var ot=new a1(xd(it.b(),e),h1());rt=rt.h=ot,it=it.c()}tt=et}}finally{_n.ba=Xn}e.K=Yn,e.w=Wn,e.S=Qn;var st=e.w,at=e.S,ut=e.K,ct=e.K,ft=ct.ba,ht=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),lt=new Ai(bC().u(),bC().u(),bC().u(),bC().u());ct.ba=new MO(ht,lt,ft);try{for(var pt=tt;!pt.f();){var wt=pt.b();DA(e,wt),pt=pt.c()}var dt=new vV(mA(e,Hn),tt,md(n,Jn,e))}finally{ct.ba=ft}e.K=ut,e.w=st,e.S=at,kA(e,Hn,dt)}else if(t instanceof xJ){var vt=t.Oq,yt=t.jC,bt=e.w,gt=e.S,mt=e.K,$t=e.K,kt=$t.ba,xt=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),Et=new Ai(bC().u(),bC().u(),bC().u(),bC().u());$t.ba=new MO(xt,Et,kt);try{if(yt===h1())var Dt=h1();else{for(var At=new a1(xd(yt.b(),e),h1()),It=At,jt=yt.c();jt!==h1();){var St=new a1(xd(jt.b(),e),h1());It=It.h=St,jt=jt.c()}Dt=At}var Ct=new YH(mA(e,vt),Dt,_h().r)}finally{$t.ba=kt}e.K=mt,e.w=bt,e.S=gt,kA(e,vt,Ct)}else if(t instanceof qJ){var zt=t.Bn,Nt=function(n,t,e){var r=new Eg;if(r.ob)r=r.wb;else{if(null===r)throw GT();if(r.ob)r=r.wb;else{var i=n.w,o=n.S,s=n.K,a=n.K,u=a.ba,c=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),f=new Ai(bC().u(),bC().u(),bC().u(),bC().u());a.ba=new MO(c,f,u);try{if(e===h1())var h=h1();else{var l=new a1(xd(e.b(),n),h1());c=l;for(var p=e.c();p!==h1();){var w=new a1(xd(p.b(),n),h1());c=c.h=w,p=p.c()}h=l}}finally{a.ba=u}n.K=s,n.w=i,n.S=o,r=Dg(r,new XH(n=mA(n,t),h,null))}}return r}(e,zt,t.tC);kA(e,zt,Nt)}else if(t instanceof CJ){var Tt=t.Jw,qt=t.qC,Lt=e.w,Mt=e.S,Rt=e.K,Bt=e.K,Ot=Bt.ba,Ft=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),Pt=new Ai(bC().u(),bC().u(),bC().u(),bC().u());Bt.ba=new MO(Ft,Pt,Ot);try{if(qt===h1())var Ut=h1();else{for(var Kt=new a1(xd(qt.b(),e),h1()),Vt=Kt,Ht=qt.c();Ht!==h1();){var Gt=new a1(xd(Ht.b(),e),h1());Vt=Vt.h=Gt,Ht=Ht.c()}Ut=Kt}var Jt=new _H(mA(e,Tt),Ut)}finally{Bt.ba=Ot}e.K=Rt,e.w=Lt,e.S=Mt,kA(e,Tt,Jt)}else if(t instanceof jJ){var Wt=t.Iw,Qt=t.oC,Yt=e.w,_t=e.S,Xt=e.K,Zt=e.K,ne=Zt.ba,te=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),ee=new Ai(bC().u(),bC().u(),bC().u(),bC().u());Zt.ba=new MO(te,ee,ne);try{if(Qt===h1())var re=h1();else{for(var ie=new a1(xd(Qt.b(),e),h1()),oe=ie,se=Qt.c();se!==h1();){var ae=new a1(xd(se.b(),e),h1());oe=oe.h=ae,se=se.c()}re=ie}var ue=new ZJ(mA(e,Wt),re)}finally{Zt.ba=ne}e.K=Xt,e.w=Yt,e.S=_t,kA(e,Wt,ue)}else if(t instanceof AJ){var ce=t.ht,fe=t.hj,he=t.Pq,le=t.Qq,pe=t.hp,we=t.it,de=t.mk,ve=mA(e,fe),ye=kd(ce,e),be=e.w,ge=e.S,me=e.K,$e=e.K,ke=$e.ba,xe=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),Ee=new Ai(bC().u(),bC().u(),bC().u(),bC().u());$e.ba=new MO(xe,Ee,ke);try{if(he===h1())var De=h1();else{for(var Ae=new a1(xd(he.b(),e),h1()),Ie=Ae,je=he.c();je!==h1();){var Se=new a1(xd(je.b(),e),h1());Ie=Ie.h=Se,je=je.c()}De=Ae}if(le===h1())var Ce=h1();else{for(var ze=le.b(),Ne=new a1(hd(n,ze,e),h1()),Te=Ne,qe=le.c();qe!==h1();){var Le=qe.b(),Me=new a1(hd(n,Le,e),h1());Te=Te.h=Me,qe=qe.c()}Ce=Ne}if(pe===h1())var Re=h1();else{for(var Be=pe.b(),Oe=new a1(ld(n,Be,e),h1()),Fe=Oe,Pe=pe.c();Pe!==h1();){var Ue=Pe.b(),Ke=new a1(ld(n,Ue,e),h1());Fe=Fe.h=Ke,Pe=Pe.c()}Re=Oe}var Ve=TA(e,new qE(()=>(IA(e,Re),$d(n,we,e))));if(null===Ve)throw new pq(Ve);var He=Ve.G(),Ge=Ve.H(),Je=new KH(ve,De,Ce,Re,Ge,He,ye,de)}finally{$e.ba=ke}e.K=me,e.w=be,e.S=ge,$A(e,fe,Je)}else{if(!(t instanceof SJ)){if(t instanceof IJ){var We=t.jt,Qe=t.nC,Ye=t.Rq;if(Ye instanceof LF)break n;if(qF()===Ye){if(hO(We,Aw(yJ(e)))){var _e=function(n,t){return t=Hv(n=new Vv(n=Uv(Kv(),n.S.br.hf).Vn.Te()),t),Fv().la(t.Vn)?new LF(t=Wv(t)):qF()}(e,Qe);_e.f()&&Js(e,"Missing include: "+Qe);var Xe=_e.v();t.Rq=new LF(Xe)}else t.Rq=qF();break n}}throw new pq(t)}var Ze=t.kt,nr=t.pC,tr=new oW(mA(e,Ze),vd(n,nr,e));$A(e,Ze,tr),jA(e,tr)}e.w=r}function ud(n,t,e){var r=e.w;if(e.w=t,t instanceof gN){for(var i=t.vk,o=i;!o.f();){var s=o.b();ad(n,s,e),o=o.c()}fd(n,i,e)}else if(t instanceof KK){var a=t.li,u=t.yk;ad(n,a,e),ud(n,a,e),ud(n,u,e)}else if(t instanceof KJ){var c=t.Ug,f=t.Rw,h=new RN(c.sf);if(f.f())var l=qF();else{var p=f.v();l=new LF(dd(n,p,e))}$A(e,c,new rG(h,l))}else if(t instanceof PJ){var w=t.Xb,d=t.Qw,v=new RN(w.sf);if(d.f())var y=qF();else{var b=d.v();y=new LF(vd(n,b,e))}var g=new iW(v,y);$A(e,w,g);var m=g.na();xA(e,m)}else if(t instanceof RJ){var $=t.Sg,k=t.nt,x=t.Vl;if(k.f())var E=qF();else{var D=k.v();E=new LF(dd(n,D,e))}ud(n,x,e);var A=mA(e,$);$A(e,$,new XJ(A,E,t))}else if(t instanceof BJ){var I=t.ji,S=t.ot,C=t.pk;if(S.f())var z=qF();else{var N=S.v();z=new LF(dd(n,N,e))}ud(n,C,e);var T=new XQ(mA(e,I),z,t);$A(e,I,T);var q=T.na();xA(e,q)}else if(t instanceof LJ){var L=t.ok,M=t.lt,R=t.kp,B=t.Ul;if(M.f())var O=qF();else{var F=M.v();O=new LF(dd(n,F,e))}var P,K=SA(e,R);Q$(K)?P=K:Js(e,"Region needs to be a block."),ud(n,B,e);var V=mA(e,L);$A(e,L,new uQ(V,O,P,t))}else if(t instanceof EJ){var H=t.hi,G=t.ft,J=t.gj;if(J instanceof ZK)ud(n,J.ni,e);else{if(G.f())var W=qF();else{var Q=G.v();W=new LF(vd(n,Q,e))}ud(n,J,e);var Y=mA(e,H);$A(e,H,new _J(Y,W,t))}}else if(t instanceof zJ){var _=t.ii,X=de(e,t.Zf),Z=e.w,nn=e.S,tn=e.K,en=e.K,rn=en.ba,on=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),sn=new Ai(bC().u(),bC().u(),bC().u(),bC().u());en.ba=new MO(on,sn,rn);try{for(var an=X.QH;!an.f();){var un=an.b();DA(e,un),an=an.c()}AA(e,X.jD),IA(e,X.jx),ud(n,_,e)}finally{en.ba=rn}e.K=tn,e.w=Z,e.S=nn}else if(t instanceof AJ){var cn=t.mk,fn=de(e,t.hj),hn=e.w,ln=e.S,pn=e.K,wn=e.K,dn=wn.ba,vn=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),yn=new Ai(bC().u(),bC().u(),bC().u(),bC().u());wn.ba=new MO(vn,yn,dn);try{for(var bn=fn.WC;!bn.f();){var gn=bn.b();DA(e,gn),bn=bn.c()}AA(e,fn.XC),IA(e,fn.UC);for(var mn=cn;!mn.f();){var $n=mn.b();if($n instanceof iO)for(var kn=$n.Tq.Ri;!kn.f();){var xn=kn.b();ud(n,xn,e),kn=kn.c()}else if($n instanceof rO)ud(n,$n.lp,e);else if(!($n instanceof sO))throw new pq($n);mn=mn.c()}}finally{wn.ba=dn}e.K=pn,e.w=hn,e.S=ln}else if(t instanceof NJ){var En=t.ip,Dn=t.rC,An=ze(qe(),de(e,En),e),In=t=>{if(null!==t){var r=t.st,i=t.Ow,o=t.Pw,s=t.Mw,a=t.Nw,u=e.w;e.w=t,t=mA(e,r);var c=e.S,f=e.K,h=e.K,l=h.ba,p=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),w=new Ai(bC().u(),bC().u(),bC().u(),bC().u());h.ba=new MO(p,w,l);try{for(var d=An.wp;!d.f();){var v=d.b();DA(e,v),d=d.c()}if(i===h1())var y=h1();else{var b=new a1(xd(i.b(),e),h1());d=b;for(var g=i.c();g!==h1();){var m=new a1(xd(g.b(),e),h1());d=d.h=m,g=g.c()}y=b}if(o===h1())var $=h1();else{var k=o.b(),x=new a1(hd(n,k,e),h1());i=x;for(var E=o.c();E!==h1();){var D=E.b(),A=new a1(hd(n,D,e),h1());i=i.h=A,E=E.c()}$=x}if(s===h1())var I=h1();else{var j=s.b(),S=new a1(ld(n,j,e),h1());o=S;for(var C=s.c();C!==h1();){var z=C.b(),N=new a1(ld(n,z,e),h1());o=o.h=N,C=C.c()}I=S}if(I===h1())h1();else{var T=I.b().na();xA(e,T);for(var q=new a1(void 0,h1()),L=I.c();L!==h1();){var M=L.b().na();xA(e,M);var R=new a1(void 0,h1());q=q.h=R,L=L.c()}}var B=$d(n,a,e);if(null===B)throw new pq(B);var O=B.G();s=B.H();var F=new JH(t,vZ(An.wp,y),$,I,s,O,An);$A(e,r,F);var P=F}finally{h.ba=l}return e.K=f,e.S=c,e.w=u,P}throw new pq(t)};if(Dn===h1())var jn=h1();else{for(var Sn=new a1(In(Dn.b()),h1()),Cn=Sn,zn=Dn.c();zn!==h1();){var Nn=new a1(In(zn.b()),h1());Cn=Cn.h=Nn,zn=zn.c()}jn=Sn}An.oj=jn}else if(t instanceof TJ){var Tn=t.An,qn=t.jp.sf,Ln=e.w,Mn=e.S,Rn=e.K,Bn=e.K,On=Bn.ba,Fn=Si(On.Yn(),qn);Bn.ba=new RO(qn,Fn,On);try{for(var Pn=Tn;!Pn.f();){var Un=Pn.b();ud(n,Un,e),Pn=Pn.c()}}finally{Bn.ba=On}e.K=Rn,e.w=Ln,e.S=Mn}else if(!(t instanceof MJ||t instanceof DJ))if(t instanceof xJ){var Kn=t.Hw,Vn=de(e,t.Oq),Hn=t=>{if(null!==t){var r=t.et,i=t.iC;t=t.hC;var o=e.w,s=e.S,a=e.K,u=e.K,c=u.ba,f=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),h=new Ai(bC().u(),bC().u(),bC().u(),bC().u());u.ba=new MO(f,h,c);try{var l=mA(e,r);if(i===h1())var p=h1();else{var w=i.b(),d=new a1(xd(w,e),h1());w=d;for(var v=i.c();v!==h1();){var y=new a1(xd(v.b(),e),h1());w=w.h=y,v=v.c()}p=d}var b=new FH(l,vZ(Vn.Bt,p),null,Vn)}finally{u.ba=c}return e.K=a,e.w=o,e.S=s,$A(e,r,b),b.Hk=cd(n,t,b,e),b}throw new pq(t)};if(Kn===h1())var Gn=h1();else{for(var Jn=new a1(Hn(Kn.b()),h1()),Wn=Jn,Qn=Kn.c();Qn!==h1();){var Yn=new a1(Hn(Qn.b()),h1());Wn=Wn.h=Yn,Qn=Qn.c()}Gn=Jn}Vn.gx=Gn}else if(t instanceof qJ){var _n=t.Bn,Xn=t.sC,Zn=de(e,t.Bn),nt=new FH(mA(e,_n),Zn.Dt,null,Zn),tt=pO(_n,e);$A(e,tt,nt),Zn.Ct=nt,nt.Hk=cd(n,Xn,nt,e)}else if(!(t instanceof CJ||t instanceof jJ||t instanceof SJ||t instanceof IJ))if(t instanceof YK){var et=t.cm,rt=t.dm,it=t.bm,ot=e.w,st=e.S,at=e.K,ut=e.K,ct=ut.ba,ft=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),ht=new Ai(bC().u(),bC().u(),bC().u(),bC().u());ut.ba=new MO(ft,ht,ct);try{for(var lt=et;!lt.f();){var pt=lt.b();wd(n,pt,e),lt=lt.c()}ud(n,rt,e)}finally{ut.ba=ct}e.K=at,e.w=ot,e.S=st;var wt=e.w,dt=e.S,vt=e.K,yt=e.K,bt=yt.ba,gt=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),mt=new Ai(bC().u(),bC().u(),bC().u(),bC().u());yt.ba=new MO(gt,mt,bt);try{ud(n,it,e)}finally{yt.ba=bt}e.K=vt,e.w=wt,e.S=dt}else if(t instanceof eV){var $t=t.im,kt=t.gm,xt=t.hm,Et=e.w,Dt=e.S,At=e.K,It=e.K,jt=It.ba,St=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),Ct=new Ai(bC().u(),bC().u(),bC().u(),bC().u());It.ba=new MO(St,Ct,jt);try{for(var zt=$t;!zt.f();){var Nt=zt.b();wd(n,Nt,e),zt=zt.c()}ud(n,kt,e)}finally{It.ba=jt}e.K=At,e.w=Et,e.S=Dt;var Tt=e.w,qt=e.S,Lt=e.K,Mt=e.K,Rt=Mt.ba,Bt=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),Ot=new Ai(bC().u(),bC().u(),bC().u(),bC().u());Mt.ba=new MO(Bt,Ot,Rt);try{if(!xt.f()){var Ft=xt.v();ud(n,Ft,e)}}finally{Mt.ba=Rt}e.K=Lt,e.w=Tt,e.S=qt}else if(t instanceof UK){var Pt=t.In,Ut=e.w,Kt=e.S,Vt=e.K,Ht=e.K,Gt=Ht.ba,Jt=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),Wt=new Ai(bC().u(),bC().u(),bC().u(),bC().u());Ht.ba=new MO(Jt,Wt,Gt);try{ud(n,Pt,e)}finally{Ht.ba=Gt}e.K=Vt,e.w=Ut,e.S=Kt}else if(t instanceof nV){var Qt=t.nj,Yt=t.mj;fd(n,Yt,e);var _t=e.w,Xt=e.S,Zt=e.K,ne=e.K,te=ne.ba,ee=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),re=new Ai(bC().u(),bC().u(),bC().u(),bC().u());ne.ba=new MO(ee,re,te);try{for(var ie=Yt;!ie.f();){var oe=ie.b().Cn;if(!oe.f()){var se=oe.v(),ae=ld(n,se,e);jA(e,ae)}ie=ie.c()}ud(n,Qt,e)}finally{ne.ba=te}e.K=Zt,e.w=_t,e.S=Xt}else if(t instanceof WJ){var ue=t.Ek,ce=t.Dk,fe=new iW(new RN(ue.sf),new LF(Xi().pD));$A(e,ue,fe);var he=e.w,le=e.S,pe=e.K,ve=e.K,ye=ve.ba,be=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),ge=new Ai(bC().u(),bC().u(),bC().u(),bC().u());ve.ba=new MO(be,ge,ye);try{jA(e,fe),ud(n,ce,e)}finally{ve.ba=ye}e.K=pe,e.w=he,e.S=le}else if(t instanceof TK){var me=t.yh,$e=t.Wl,ke=e.w;e.w=me;var xe=ze(qe(),bd(n,me,e).Lc,e);e.w=ke;for(var Ee=$e;!Ee.f();){var De=Ee.b();if(null===De)throw new pq(De);var Ae=De.$l,Ie=De.Gn,je=De.Hn,Se=De.Zl,Ce=De.wk,Ne=De.Fn,Te=e.w;e.w=De;n:{for(var Le=xe.oj;!Le.f();){if(Le.b().Yg.Z()===Ae.Yd){var Me=new LF(Le.b());break n}Le=Le.c()}Me=qF()}if(Me.f())var Re=qF();else{var Be=Me.v();we(e,Ae,Be),Re=new LF(void 0)}if(Re.f()){var Oe=new AS(xl(Al(),new(U(DF).j)(["Operation "," is not part of interface ","."]))),Fe=kl(Al(),new j([Ae,xe]));Ws(e,new Cj(Oe,Fe))}else Re.v();var Pe=e.w,Ue=e.S,Ke=e.K,Ve=e.K,He=Ve.ba,Ge=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),Je=new Ai(bC().u(),bC().u(),bC().u(),bC().u());Ve.ba=new MO(Ge,Je,He);try{var We=(n=>t=>xd(t,n))(e);if(Ie===h1())h1();else for(var Qe=new a1(We(Ie.b()),h1()),Ye=Ie.c();Ye!==h1();){var _e=new a1(We(Ye.b()),h1());Qe=Qe.h=_e,Ye=Ye.c()}var Xe=(t=>e=>hd(n,e,t))(e);if(je===h1())var Ze=h1();else{for(var nr=new a1(Xe(je.b()),h1()),tr=nr,er=je.c();er!==h1();){var rr=new a1(Xe(er.b()),h1());tr=tr.h=rr,er=er.c()}Ze=nr}var ir=(t=>e=>ld(n,e,t))(e);if(Se===h1())var or=h1();else{for(var sr=new a1(ir(Se.b()),h1()),ar=sr,ur=Se.c();ur!==h1();){var cr=new a1(ir(ur.b()),h1());ar=ar.h=cr,ur=ur.c()}or=sr}AA(e,Ze),IA(e,or),$A(e,Ne,new sW(e.S)),ud(n,Ce,e)}finally{Ve.ba=He}e.K=Ke,e.w=Pe,e.S=Ue,e.w=Te,Ee=Ee.c()}}else if(t instanceof vN){var fr=t.sk,hr=t.Xl,lr=pd(n,t.Yl,e),pr=e.w,wr=e.S,dr=e.K,vr=e.K,yr=vr.ba,br=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),gr=new Ai(bC().u(),bC().u(),bC().u(),bC().u());vr.ba=new MO(br,gr,yr);try{for(var mr=lr;!mr.f();){var $r=mr.b();EA(e,$r),mr=mr.c()}for(var kr=fr;!kr.f();){var xr=kr.b();wd(n,xr,e),kr=kr.c()}var Er=null;Er=v_();for(var Dr=lr;!Dr.f();){var Ar=Dr.b();if(Er.la(Ar.lm)){Wi();var Ir=Ji(new AS(xl(Al(),new(U(DF).j)(["Patterns have to be linear: names can only occur once, but "," shows up multiple times."]))),kl(Al(),new j([Ar.lm])));Os(e,Ir)}var jr=CA(e,Ar.lm);if(!jr.f()){Wi();var Sr=Ji(new AS(xl(Al(),new(U(DF).j)(["Pattern binds variable ",". Maybe you meant to match on equally named constructor of type ","?"]))),kl(Al(),new j([Ar.lm,jr.b().xp])));Ks(e,Sr)}var Cr=Er.zg(Ar.lm);Er=Cr,Cr=null,Dr=Dr.c()}TA(e,new qE(()=>{ud(n,hr,e)}))}finally{vr.ba=yr}e.K=dr,e.w=pr,e.S=wr}else if(t instanceof GK){var zr=t.zk,Nr=t.Ak,Tr=t.mi,qr=t.zh,Lr=e.w,Mr=e.S,Rr=e.K,Br=e.K,Or=Br.ba,Fr=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),Pr=new Ai(bC().u(),bC().u(),bC().u(),bC().u());Br.ba=new MO(Fr,Pr,Or);try{if(zr===h1())h1();else for(var Ur=new a1(xd(zr.b(),e),h1()),Kr=zr.c();Kr!==h1();){var Vr=new a1(xd(Kr.b(),e),h1());Ur=Ur.h=Vr,Kr=Kr.c()}if(Nr===h1())var Hr=h1();else{for(var Gr=Nr.b(),Jr=new a1(hd(n,Gr,e),h1()),Wr=Jr,Qr=Nr.c();Qr!==h1();){var Yr=Qr.b(),_r=new a1(hd(n,Yr,e),h1());Wr=Wr.h=_r,Qr=Qr.c()}Hr=Jr}if(Tr===h1())var Xr=h1();else{for(var Zr=Tr.b(),ni=new a1(ld(n,Zr,e),h1()),ti=ni,ei=Tr.c();ei!==h1();){var ri=ei.b(),ii=new a1(ld(n,ri,e),h1());ti=ti.h=ii,ei=ei.c()}Xr=ni}AA(e,Hr),IA(e,Xr),ud(n,qr,e)}finally{Br.ba=Or}e.K=Rr,e.w=Lr,e.S=Mr}else if(t instanceof JK){var oi=t.Jn,si=t.ij;if(!oi.f())kd(oi.v(),e);ud(n,si,e)}else if(t instanceof QJ){var ai=t.tp;ud(n,t.fm,e),function(n,t){var e=n.w;n.w=t;var r=EI(n.K,t,new ME(n=>n instanceof VH));if(r.f()){var i=xl(Al(),new(U(DF).j)(["Cannot resolve field access ",""]));i=new AS(i);var o=kl(Al(),new j([t]));Ws(n,new Cj(i,o))}r=new dV(r),we(n,t,r),n.w=e}(e,ai)}else if(t instanceof JJ){var ui=t.em,ci=t.sp,fi=t.lj,hi=t.jj;ud(n,t.kj,e),function(n,t){var e=n.w;n.w=t;var r=function(n,t,e){return yI(n,t.rk,n.ba,new ME(n=>{var r=n.Ap.sb(t.Yd,new qE(()=>v_())).yb(e);return n=Ci(n).sb(t.Yd,new qE(()=>v_())).yb(e),r.za(n)}))}(n.K,t,new ME(n=>Q$(n)));if(r.f()){var i=xl(Al(),new(U(DF).j)(["Cannot resolve function ",""]));i=new AS(i);var o=kl(Al(),new j([t.Yd]));Ws(n,new Cj(i,o))}r=new dV(r),we(n,t,r),n.w=e}(e,ui);for(var li=ci;!li.f();){var pi=li.b();dd(n,pi,e),li=li.c()}fd(n,fi,e),fd(n,hi,e)}else if(t instanceof GJ){var wi=t.tt,di=t.Kn,vi=t.Xq,yi=t.Ck,bi=t.Bk;if(wi.f())var gi=qF();else{var mi=wi.v();gi=new LF(bd(n,mi,e))}!function(n,t,e){var r=n.w;if(n.w=e,t instanceof LF){t=t.oa;var i=ze(qe(),t.Lc,n.Xc).oj;n:for(;;){if(i.f()){t=h1();break}var o=i.b();if(t=i.c(),o.Yg.Z()===e.Yd==!1)i=t;else for(;;){if(t.f())t=i;else{if(t.b().Yg.Z()===e.Yd!=!1){t=t.c();continue}o=t,t=new a1(i.b(),h1());var s=i.c();for(i=t;s!==o;){var a=new a1(s.b(),h1());i=i.h=a,s=s.c()}for(s=o=o.c();!o.f();){if(o.b().Yg.Z()===e.Yd==!1){for(;s!==o;)a=new a1(s.b(),h1()),i=i.h=a,s=s.c();s=o.c()}o=o.c()}s.f()||(i.h=s)}break n}}t.f()?t=_h().r:(_h(),t=xl(Al(),new(U(uY).j)([bE(gE(),t)])),t=dZ(h1(),t))}else{if(qF()!==t)throw new pq(t);t=function(n,t,e){return yI(n,t,n.ba,new ME(n=>Ci(n).sb(e,new qE(()=>v_()))))}(n.K,e.rk,e.Yd)}t.f()&&(i=new AS(i=xl(Al(),new(U(DF).j)(["Cannot resolve effect operation ",""]))),o=kl(Al(),new j([e])),Ws(n,new Cj(i,o))),t=new dV(t),we(n,e,t),n.w=r}(e,gi,di);for(var $i=vi;!$i.f();){var ki=$i.b();dd(n,ki,e),$i=$i.c()}fd(n,yi,e),fd(n,bi,e)}else if(t instanceof WK){var xi=t.qp,Ei=t.Wg,Di=t.Vg;!function(n,t,e){var r=n.w;n.w=t,e.q(t),n.w=r}(e,t.Ah,new ME(t=>{if(t instanceof kJ)!function(n,t){var e=n.w;n.w=t;var r=EI(n.K,t,new ME(n=>!(n instanceof JH)));if((r=function(n,t,e){for(;;){var r=e,i=_h().r;if(null===i?null===r:i.d(r))return _h(),new hR(n=_h().r);if(r instanceof a1){if(r=(i=r).Ec,i=i.h,r.f()){e=i;continue}if(r.ye(new ME(n=>Q$(n)&&!ZA(n)))){if(_h(),e===h1())n=h1();else for(n=e.b(),t=n=new a1(n.xb(new sN),h1()),e=e.c();e!==h1();)r=new a1((r=e.b()).xb(new sN),h1()),t=t.h=r,e=e.c();t=n;n:for(;;){if(t.f()){n=h1();break}if(e=t.b(),n=t.c(),!0==!!e.f())t=n;else for(;;){if(n.f())n=t;else{if(!0!=!!n.b().f()){n=n.c();continue}for(e=n,n=new a1(t.b(),h1()),r=t.c(),t=n;r!==e;)i=new a1(r.b(),h1()),t=t.h=i,r=r.c();for(r=e=e.c();!e.f();){if(!0==!!e.b().f()){for(;r!==e;)i=new a1(r.b(),h1()),t=t.h=i,r=r.c();r=e.c()}e=e.c()}r.f()||(t.h=r)}break n}}return new hR(n)}if(r.fg(new ME(n=>rk(n)||ZA(n)))){if(r.fg(new ME(n=>Q$(n)&&!ZA(n)))&&Ps(n,"Should not happen by construction."),1===r.Q())return _h(),new fR(n=r.b());r=new AS(r=xl(Al(),new(U(DF).j)(["Multiple values with the same name "," in one scope. Values cannot be overloaded."]))),i=kl(Al(),new j([t])),Ws(n,new Cj(r,i))}}Ps(n,"Should not happen")}}(n,t,r))instanceof fR)we(n,t,r.no);else{if(!(r instanceof hR))throw new pq(r);if((r=r.qm).f()){var i=EI(n.K,t,new ME(()=>!0)),o=Cb().zj;i=YS(i,o);n:{for(o=i;!o.f();){if(o.b()instanceof JH){o=!0;break n}o=o.c()}o=!1}if(o){o=new AS(o=xl(Al(),new(U(DF).j)(["There is an equally named effect operation. Use syntax `do ","() to call it.`"])));var s=kl(Al(),new j([t]));Hs(n,new Cj(o,s))}n:{for(;!i.f();){if(i.b()instanceof VH){i=!0;break n}i=i.c()}i=!1}i&&(i=new AS(i=xl(Al(),new(U(DF).j)(["There is an equally named field. Use syntax `obj."," to access it.`"]))),o=kl(Al(),new j([t])),Hs(n,new Cj(i,o))),i=new AS(i=xl(Al(),new(U(DF).j)(["Cannot find a function named `","`."]))),o=kl(Al(),new j([t])),Ws(n,new Cj(i,o))}r=new dV(r),we(n,t,r)}n.w=e}(e,t.yn);else{if(!(t instanceof SK))throw new pq(t);ud(n,t.Sl,e)}}));for(var Ii=xi;!Ii.f();){var ji=Ii.b();dd(n,ji,e),Ii=Ii.c()}fd(n,Ei,e),fd(n,Di,e)}else if(t instanceof YJ)SA(e,t.Gk);else if(t instanceof HJ){var zi=t.pp,Ni=t.am,Ti=SA(e,zi);if(Ti instanceof XQ||Ti instanceof uQ)ud(n,Ni,e);else{if(Ti instanceof XJ||Ti instanceof rG){var qi=new AS(xl(Al(),new(U(DF).j)(["Can only assign to mutable variables, but "," is a constant."]))),Li=kl(Al(),new j([zi.Yd]));Ws(e,new Cj(qi,Li))}Ti instanceof DV&&Js(e,"Trying to assign to a wildcard, which is not allowed."),Js(e,"Can only assign to mutable variables.")}}else t instanceof rV?dd(n,t,e):t instanceof DH?yd(n,t,e):t instanceof wO?SA(e,t):fd(n,t,e);e.w=r}function cd(n,t,e,r){var i=r.w,o=r.S,s=r.K,a=r.K,u=a.ba,c=new 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for(o=a.b(),s=o=new a1(zd(n,o,e,r),h1()),a=a.c();a!==h1();){var u=a.b();u=new a1(zd(n,u,e,r),h1()),s=s.h=u,a=a.c()}return n.HP(o)}return o instanceof rO?Td(n,o.lp,e,r):o instanceof sO?s:void Ol(Fl(),"Should never happen!")}),e)}var Od=function n(t,e,r){var i=new wN(r,t);if(i.hu(e))var o=uf().Oa,s=i.Zt(e,o);else{if(e instanceof YJ)var a=e;else if(e instanceof HJ){a=new HJ(e.pp,n(t,e.am,r))}else if(e instanceof _K)a=e;else if(e instanceof QK){a=new QK(Pd(t,e.Yq,r))}else if(e instanceof JK){a=new JK(e.Jn,n(t,e.ij,r))}else if(e instanceof tV){a=new tV(n(t,e.Fk,r))}else if(e instanceof QJ){var u=e.tp;a=new QJ(n(t,e.fm,r),u)}else if(e instanceof GJ){var c=e.tt,f=e.Kn,h=e.Xq,l=e.Ck,p=e.Bk;if(l===h1())var w=h1();else{for(var d=new a1(n(t,l.b(),r),h1()),v=d,y=l.c();y!==h1();){var b=new a1(n(t,y.b(),r),h1());v=v.h=b,y=y.c()}w=d}if(p===h1())var g=h1();else{for(var m=new a1(n(t,p.b(),r),h1()),$=m,k=p.c();k!==h1();){var x=new a1(n(t,k.b(),r),h1());$=$.h=x,k=k.c()}g=m}a=new GJ(c,f,h,w,g)}else if(e 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aV(t,e,a,u,c,f)}}throw new pq(i)}(n,t,e,r):t instanceof uV&&e instanceof uV?function(n,t,e,r){var i=bq(new gq,t,e);e=i.dg;var o=i.vg;if(null!==e&&(t=e.Lc,e=e.tf,null!==o)){if(i=o.Lc,o=o.tf,null===t?null!==i:!zi(t,i)){Wi();var s=xl(Al(),new(U(DF).j)(["The two types "," and "," are not compatible"]));dj(n,Ji(new AS(s),kl(Al(),new j([t,i]))))}if(s=_S(e,o),e=t=>{if(null!==t)return cv(n,t.H(),t.G(),new HO(r));throw new pq(t)},s===h1())e=h1();else{for(o=s.b(),i=o=new a1(e(o),h1()),s=s.c();s!==h1();){var a=s.b();a=new a1(e(a),h1()),i=i.h=a,s=s.c()}e=o}return new uV(t,e)}throw new pq(i)}(n,t,e,r):(Wi(),void dj(n,Ji(new AS(r=xl(Al(),new(U(DF).j)(["The two types "," and "," are not compatible"]))),kl(Al(),new j([t,e])))))}function hv(n,t,e,r){for(;!t.f();){var i=t.b(),o=_h().r;if(null===o?null!==i:!o.d(i)){if(null!==i&&(_h(),0===i.Ma(1)&&null!==(o=Wq(i,0))))return e=o.Dc,t=o.ge,ZI(r,o.Hd),we(r,n,e),t;if(o=(n=>t=>{var e=Sv(t=t.Dc,n).H();return bq(new gq,t,e)})(r),i===h1())o=h1();else{var s=i.b(),a=s=new a1(o(s),h1());for(i=i.c();i!==h1();){var u=i.b();u=new a1(o(u),h1()),a=a.h=u,i=i.c()}o=s}Gs(o=new iF(o,i=qc(r.Og,n)))}t=t.c()}if((null===(n=_h().r)?null===e:n.d(e))&&Js(r,"Cannot typecheck call."),null!==e&&(_h(),0===e.Ma(1)&&(null!==(n=Wq(e,0))&&function(n,t){var e=t.b();t=t.Yh(),(n=GQ(n)).xe=YX(n.xe,t),Gs(e)}(r,n.G()))),n=n=>{if(null!==n){var t=n.H();return n=n.G(),new Iq(t,Sv(t,r).H(),n)}throw new pq(n)},e===h1())e=h1();else{for(o=t=new a1(n(t=e.b()),h1()),e=e.c();e!==h1();)i=new a1(n(i=e.b()),h1()),o=o.h=i,e=e.c();e=t}Gs(e=new sF(e,n=qc(r.Og,r.w)))}function lv(n,t,e,r,i){if(r!==i){var o=xl(Al(),new(U(DF).j)(["Number of "," (",") does not match declaration of '","', which expects ","."]));Ws(n,new Cj(o=new AS(o),t=kl(Al(),new j([e,r,t.Yd,i]))))}}function pv(n,t){return!t.f()||!n.fd.f()}function wv(n,t,e){if(null===e)throw GT();return e.ob?e.wb:Dg(e,ij(n.sa,new xN(t)))}var dv,vv,yv,bv,gv;function mv(){this.c2="typer"}function $v(n,t,e,r,i){var o,s=r.w;r.w=t;n:if(t 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t=ne().Si;return oe(r,t,n)};if(Kn===h1())var Wn=h1();else{for(var Qn=new a1(Jn(Kn.b()),h1()),Yn=Qn,_n=Kn.c();_n!==h1();){var Xn=new a1(Jn(_n.b()),h1());Yn=Yn.h=Xn,_n=_n.c()}Wn=Qn}u=Cv(n,t,Gn,Wn,Vn,Hn,e,r,i);break n}if(Un instanceof SK){t:{var Zn=Ev(n,Un.Sl,qF(),r,i);if(null!==Zn){var nt=Zn.zb,tt=Zn.Za;if(nt instanceof aV){var et=new qI(nt,tt);break t}}Js(r,"Cannot infer function type for callee.")}var rt=et.zb,it=et.Za,ot=n=>{var t=ne().Si;return oe(r,t,n)};if(Kn===h1())var st=h1();else{for(var at=new a1(ot(Kn.b()),h1()),ut=at,ct=Kn.c();ct!==h1();){var ft=new a1(ot(ct.b()),h1());ut=ut.h=ft,ct=ct.c()}st=at}var ht=zv(n,t,"function",rt,st,Vn,Hn,e,r,i);if(null===ht)throw new pq(ht);var lt=ht.Za;u=new qI(ht.zb,po(lt,it));break n}}if(t instanceof JJ){var pt=t.kj,wt=t.em,dt=t.sp,vt=t.lj,yt=t.jj,bt=n=>{var t=ne().Si;return oe(r,t,n)};if(dt===h1())var gt=h1();else{for(var mt=new a1(bt(dt.b()),h1()),$t=mt,kt=dt.c();kt!==h1();){var xt=new a1(bt(kt.b()),h1());$t=$t.h=xt,kt=kt.c()}gt=mt}u=function(n,t,e,r,i,o,s,u,c,f){var h=de(c,r);if(h instanceof dV){var l=h.Uw;h=Cb().zj,l=bZ(YS(l,h),new lT)}else h instanceof JH?(_h(),l=xl(Al(),new(U(QH).j)([h])),l=dZ(h1(),l)):(h="Not a valid method: "+h+" : "+Ak(a(h)),Ps(c,h));if(null===(e=Ev(n,e,qF(),c,f)))throw new pq(e);e=e.zb;var p=Te(qe(),e,c);e=n=>{n=n.Bp;var t=p.Lc;return null===n?null===t:zi(n,t)},h=l;t:for(;;){if(h.f()){e=h1();break}var w=h.b();if(l=h.c(),!1==!!e(w))h=l;else for(;;){if(l.f())e=h;else{if(w=l.b(),!1!=!!e(w)){l=l.c();continue}w=l,l=new a1(h.b(),h1());var d=h.c();for(h=l;d!==w;){var v=new a1(d.b(),h1());h=h.h=v,d=d.c()}for(d=w=w.c();!w.f();){if(v=w.b(),!1==!!e(v)){for(;d!==w;)v=new a1(d.b(),h1()),h=h.h=v,d=d.c();d=w.c()}w=w.c()}d.f()||(h.h=d),e=l}break t}}if(null===(l=Nv(e,new ME(e=>{var r=Sv(e,c);if(null===r)throw new pq(r);if(r=r.H(),!i.f()&&i.s()!==r.gd.s()){var a="Wrong number of type arguments, given "+i.s()+" but expected 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t=oe(r,e,t),(n=n.Cn).f()?n=qF():(n=n.v().Xb,n=new LF(de(r,n))),t=n.f()?VI(r,t):n.v(),(n=t.Mf).f()&&Ms("Block type annotation required"),n=n.v(),e=xl(Al(),new(U(OH).j)([t.na()])),e=bE(gE(),e),WI(r,t,n,new TN(e)),t}))),Tt=ij(r.sa,new DN(t));if(Nt===h1())var qt=h1();else{for(var Lt=new a1(Nt.b().na(),h1()),Mt=Lt,Rt=Nt.c();Rt!==h1();){var Bt=new a1(Rt.b().na(),h1());Mt=Mt.h=Bt,Rt=Rt.c()}qt=Lt}var Ot=pj(r.sa,Tt,qt);UI(r,t,Nt);var Ft=(o=r,n=>{qe();var t=n.Mf;return t.f()&&Ms("Capability type needs to be know."),t=Te(0,t.v(),o.Xc),bq(new gq,t,n)});if(Nt===h1())var Pt=h1();else{for(var Ut=new a1(Ft(Nt.b()),h1()),Kt=Ut,Vt=Nt.c();Vt!==h1();){var Ht=new a1(Ft(Vt.b()),h1());Kt=Kt.h=Ht,Vt=Vt.c()}Pt=Ut}Cb(),r.sc=new _d(t,dE(vE(),Pt),r.sc);var Gt=Av(n,Ct,e,r,Ot);if(r.sc=r.sc.Vp(),null===Gt)throw new pq(Gt);var Yt=Gt.Za,_t=Gt.zb,Xt=Yt,te=null;te=Do().ri;for(var ee=zt;!ee.f();){var re=ee.b(),ie=r.w;r.w=re;var se=re.qk,ae=bq(new gq,_t,Tt),ue=xv(n,se,new LF(ae),r,Ot);if(null===ue)throw new pq(ue);var ce=po(te,ue.Za);te=ce,ce=null,r.w=ie,ee=ee.c()}var fe=n=>{var t=r.sa;qe();var e=n.Mf;return e.f()&&Ms("Block type annotation required"),e=Te(0,e.v(),r),t=OI(Ro(t.$a),e),bq(new gq,t,n)};if(Nt===h1())var he=h1();else{for(var pe=new a1(fe(Nt.b()),h1()),we=pe,ye=Nt.c();ye!==h1();){var be=new a1(fe(ye.b()),h1());we=we.h=be,ye=ye.c()}he=pe}for(var ge=zt,me=null,$e=null;ge!==h1();){var ke=ge.b().Cn;if(ke.f())var xe=qF();else{var Ee=ke.v().Xb;xe=new LF(de(r,Ee))}for(var De=xe.x();De.y();){var Ae=new a1(De.t(),h1());null===$e?me=Ae:$e.h=Ae,$e=Ae}ge=ge.c()}var Ie=null===me?h1():me,je=bE(gE(),Ie);if(bo(),he===h1())var Se=h1();else{for(var Ce=new a1(he.b().H(),h1()),ze=Ce,Ne=he.c();Ne!==h1();){var Le=new a1(Ne.b().H(),h1());ze=ze.h=Le,Ne=Ne.c()}Se=Ce}for(var Me=yo(Se,r),Re=bC().u(),Be=he.x();Be.y();){var Oe=Be.t();Re.gy(Oe.H(),new qE(()=>(qL(),new T1))).jb(Oe)}for(var Fe=uE().Dm,Pe=Re.x();Pe.y();){var Ue=Pe.t();if(null===Ue)throw new pq(Ue);Fe=oX(Fe,Ue.H(),Ue.G().mb())}var Ke=new UY(new PY(Fe),new ME(n=>{if(n===h1())return h1();var t=n.b(),e=t=new a1(t.G(),h1());for(n=n.c();n!==h1();){var r=n.b();r=new a1(r.G(),h1()),e=e.h=r,n=n.c()}return t}));qL();for(var Ve=dZ(h1(),Ke),He=Ve;!He.f();){var Ge=He.b();if(null!==Ge){var Je=Ge.H(),We=Ge.G();if(1{if(null!==t){var o=t.sk,s=t.Xl;if(t=Dv(n,pr,t.Yl,r,i),QI(r,t),null===(o=kv(n,o,r,i))||(t=o.Za,void 0!==o.zb))throw new pq(o);o=t,t=r.w;var a=r.S,u=r.K;if(s=Av(n,s,e,r,i),r.K=u,r.w=t,r.S=a,null===s)throw new pq(s);return t=s.Za,s=s.zb,o=po(po(wr.Ba,t),o),wr.Ba=o,s}throw new pq(t)};if(cr===h1())var vr=h1();else{for(var yr=new a1(dr(cr.b()),h1()),br=yr,gr=cr.c();gr!==h1();){var mr=new a1(dr(gr.b()),h1());br=br.h=mr,gr=gr.c()}vr=yr}if(fr.f())var $r=qF();else{var kr=fr.v(),xr=r.w,Er=r.S,Dr=r.K,Ar=Av(n,kr,e,r,i);if(r.K=Dr,r.w=xr,r.S=Er,null===Ar)throw new pq(Ar);var Ir=Ar.Za,jr=Ar.zb,Sr=po(wr.Ba,Ir);wr.Ba=Sr,Sr=null,$r=new LF(jr)}var Cr=vZ(vr,$r);u=new qI(fj(r.sa,Cr),wr.Ba)}else{if(!(t instanceof QK))throw t instanceof ZK&&Js(r,"Expected an 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s=t.yh,a=t.Wl,u=null;u=Do().ri;var c=oe(r,ne().Si,s);if(null===c)throw new pq(c);var f=c,h=c.Lc,l=c.tf,p=ze(qe(),h,r);if(a===h1())var w=h1();else{for(var d=new a1(ve(r,a.b()),h1()),v=d,y=a.c();y!==h1();){var b=new a1(ve(r,y.b()),h1());v=v.h=b,y=y.c()}w=d}var g=p.oj,m=bE(gE(),g),$=bE(gE(),w),k=m.Ye($);if(!k.f()){var x=Ef(k.ya(new ME(n=>(Wi(),Ji(new AS(xl(Al(),new(U(DF).j)([""," of interface ",""]))),kl(Al(),new j([n.Yg,n.Bp.vp])))))),"",", ","");Fs(r,new Cj(new AS(xl(Al(),new(U(DF).j)(["Missing definitions for operations: ",""]))),kl(Al(),new j([x]))))}w.s()>OS(w).s()&&Os(r,"Duplicate definitions of operations");for(var E=a;!E.f();){var D=E.b(),A=r.w,I=r.w=D;if(null===I)throw new pq(I);var S=I.$l,C=I.Gn,z=I.Hn,N=I.Zl,T=I.Wq,q=I.wk,L=I.Fn;if(!T.f()){var M=T.v();if(null!==M)Ws(r,new Cj(new AS(xl(Al(),new(U(DF).j)(["Unexpected type annotation on operation ","."]))),kl(Al(),new j([S]))));throw new pq(M)}n:{for(var R=p.oj;!R.f();){if(R.b().Yg.Z()===S.Yd){var B=new LF(R.b());break n}R=R.c()}B=qF()}B.f()&&Ws(r,new Cj(new AS(xl(Al(),new(U(DF).j)(["Operation "," not defined in ","."]))),kl(Al(),new j([S.Yd,p.vp]))));var O=B.v(),F=GI(r,ve(r,I));if(0!==C.s()&&lv(r,S,"type parameters",C.s(),F.gd.s()-l.s()|0),lv(r,S,"value parameters",z.s(),F.hd.s()),C.s()===(F.gd.s()-l.s()|0)){var P=(n=>t=>Se(qe(),de(n,t),n))(r);if(C===h1())var K=h1();else{for(var V=new a1(P(C.b()),h1()),H=V,G=C.c();G!==h1();){var J=new a1(P(G.b()),h1());H=H.h=J,G=G.c()}K=V}}else{var W=F.gd,Q=KG(l.s(),W);if(Q===h1())K=h1();else{for(var Y=new a1(new aW(Q.b().Jk),h1()),_=Y,X=Q.c();X!==h1();){var Z=new a1(new aW(X.b().Jk),h1());_=_.h=Z,X=X.c()}K=Y}}if(K===h1())var nn=h1();else{for(var tn=new a1(new EV(K.b()),h1()),en=tn,rn=K.c();rn!==h1();){var on=new a1(new EV(rn.b()),h1());en=en.h=on,rn=rn.c()}nn=tn}re(r,ne().nv,I,K);var sn=_A(F.Gd);n:{if(qF()!==e){if(e instanceof LF){Gy||(Gy=new Hb);var an=Gb(e);if(!an.f()){var un=an.v(),cn=un.H(),fn=un.G();N.f()||Os(r,"Block parameters are bound by resume and not the effect operation itself");var hn=O.bx;if(hn===h1())var ln=h1();else{for(var pn=new a1(new tW(hn.b().Ik),h1()),wn=pn,dn=hn.c();dn!==h1();){var vn=new a1(new tW(dn.b().Ik),h1());wn=wn.h=vn,dn=dn.c()}ln=pn}if(sn===h1())var yn=h1();else{for(var bn=new a1(new tW(sn.b().Lc.Y()),h1()),gn=bn,mn=sn.c();mn!==h1();){var $n=new a1(new tW(mn.b().Lc.Y()),h1());gn=gn.h=$n,mn=mn.c()}yn=bn}var kn=vZ(ln,yn);t:{var xn=vZ(l,nn),En=n=>(n=xl(Al(),new(U(OH).j)([n])),new TN(n=bE(gE(),n)));if(kn===h1())var Dn=h1();else{for(var An=new a1(En(kn.b()),h1()),In=An,jn=kn.c();jn!==h1();){var Sn=new a1(En(jn.b()),h1());In=In.h=Sn,jn=jn.c()}Dn=An}var Cn=wj(r.sa,F,xn,Dn);if(null!==Cn){var zn=Cn.gd,Nn=Cn.Ke,Tn=Cn.hd,qn=Cn.fd,Ln=Cn.$c,Mn=Cn.Gd,Rn=_h().r;if(null===Rn?null===zn:Rn.d(zn))var Bn=_h().r,On=null===Bn?null===Nn:Bn.d(Nn);else On=!1;if(On){var Fn=Tn,Pn=qn,Un=Ln,Kn=Mn;break t}}throw new pq(Cn)}for(var Vn=Pn,Hn=Un,Gn=Kn,Jn=_S(z,Fn);!Jn.f();){var Wn=Jn.b();if(null===Wn)throw new pq(Wn);var Qn=Wn.H(),Yn=Wn.G(),_n=de(r,Qn.Ug),Xn=_n.Ch;Xn.f()||qv(Xn.v(),Yn,Qn,r);var Zn=Xn.f()?Yn:Xn.v();Wt(r.Fa,ne().Uj,_n,Zn),Jn=Jn.c()}if(pv(F,sn)){var nt=new aV(_h().r,kn,_h().r,Vn,Hn,Gn),tt=new tW(new RN("resumeBlock")),et=_h().r;_h();var rt=xl(Al(),new(U(OH).j)([tt])),it=dZ(h1(),rt),ot=_h().r;_h();var st=xl(Al(),new(U(jO).j)([nt])),at=new aV(et,it,ot,dZ(h1(),st),cn,ek().Pn)}else{var ut=_h().r,ct=_h().r;_h();var ft=xl(Al(),new(U(qO).j)([Hn]));at=new aV(ut,ct,dZ(h1(),ft),_h().r,cn,ek().Pn)}WI(r,Ne(qe(),de(r,L),r),at,fn),Me=Av(n,q,new LF(cn),r,i);break n}}throw new pq(e)}lv(r,S,"block parameters",N.s(),F.fd.s());var ht=(n=>t=>de(n,t.Xb).na())(r);if(N===h1())var lt=h1();else{for(var pt=new a1(ht(N.b()),h1()),wt=pt,dt=N.c();dt!==h1();){var vt=new a1(ht(dt.b()),h1());wt=wt.h=vt,dt=dt.c()}lt=pt}if(sn===h1())var yt=h1();else{for(var bt=new a1(new tW(sn.b().Lc.Y()),h1()),gt=bt,mt=sn.c();mt!==h1();){var $t=new a1(new tW(mt.b().Lc.Y()),h1());gt=gt.h=$t,mt=mt.c()}yt=bt}var kt=vZ(lt,yt);t:{var xt=vZ(l,nn),Et=n=>(n=xl(Al(),new(U(OH).j)([n])),new TN(n=bE(gE(),n)));if(kt===h1())var Dt=h1();else{for(var At=new a1(Et(kt.b()),h1()),It=At,jt=kt.c();jt!==h1();){var St=new a1(Et(jt.b()),h1());It=It.h=St,jt=jt.c()}Dt=At}var Ct=wj(r.sa,F,xt,Dt);if(null!==Ct){var zt=Ct.gd,Nt=Ct.Ke,Tt=Ct.hd,qt=Ct.fd,Lt=Ct.$c,Mt=Ct.Gd,Rt=_h().r;if(null===Rt?null===zt:Rt.d(zt))var Bt=_h().r,Ot=null===Bt?null===Nt:Bt.d(Nt);else Ot=!1;if(Ot){var Ft=Tt,Pt=qt,Ut=Lt,Kt=Mt;break t}}throw new pq(Ct)}for(var Vt=Pt,Ht=Ut,Gt=Kt,Jt=_S(z,Ft);!Jt.f();){var Qt=Jt.b();if(null===Qt)throw new pq(Qt);var Yt=Qt.H(),_t=Qt.G(),Xt=de(r,Yt.Ug),Zt=Xt.Ch;Zt.f()||qv(Zt.v(),_t,Yt,r);var te=Zt.f()?_t:Zt.v();Wt(r.Fa,ne().Uj,Xt,te),Jt=Jt.c()}for(var ee=_S(N,Vt).qd(lt);!ee.f();){var ie=ee.b();t:{if(null!==ie){var se=ie.H();if(null!==se){var ae=se.H(),ue=se.G(),ce=ie.G(),fe=de(r,ae.Xb),he=fe.Mf;if(!he.f())Tv(he.v(),ue,ae,r);var le=he.f()?ue:he.v(),pe=xl(Al(),new(U(OH).j)([ce]));WI(r,fe,le,new TN(bE(gE(),pe)));break t}}throw new pq(ie)}ee=ee.c()}var we=_S(_A(Gt),yt),ye=(n=>t=>{if(null!==t){var e=t.H();return t=t.G(),t=xl(Al(),new(U(OH).j)([t])),t=new TN(t=bE(gE(),t)),e=VI(n,e),Wt(n.Fa,ne().Vf,e,t),e}throw new pq(t)})(r);if(we===h1())var be=h1();else{for(var ge=new a1(ye(we.b()),h1()),me=ge,$e=we.c();$e!==h1();){var ke=new a1(ye($e.b()),h1());me=me.h=ke,$e=$e.c()}be=ge}UI(r,I,be);var xe=(n=>t=>{qe();var e=t.Mf;return e.f()&&Ms("Capability type needs to be know."),e=Te(0,e.v(),n.Xc),bq(new gq,e,t)})(r);if(be===h1())var Ee=h1();else{for(var De=new a1(xe(be.b()),h1()),Ae=De,Ie=be.c();Ie!==h1();){var je=new a1(xe(Ie.b()),h1());Ae=Ae.h=je,Ie=Ie.c()}Ee=De}Cb(),r.sc=new _d(I,dE(vE(),Ee),r.sc);var Ce=Av(n,q,new LF(Ht),r,i);if(r.sc=r.sc.Vp(),null===Ce)throw new pq(Ce);var Le=Ce.Za,Me=new qI(Ce.zb,wo(Le,mo(Do(),Gt,r)))}if(null===Me)throw new pq(Me);var Re=po(u,Me.Za);u=Re,Re=null,r.w=A,E=E.c()}Wt(r.Fa,ne().Gs,t,f);var Be=new qI(f,u);return r.w=o,Be}function Ev(n,t,e,r,i){var o=r.w;if(r.w=t,t instanceof tV){var s=t.Fk;if(e.f())var a=qF();else a=new LF(new kV(a=e.v(),ij(r.sa,new IN(t))));if(null===(n=$v(n,s,a,r,i)))throw new pq(n);if(s=n.Za,n=n.zb,(a=RI(Ro(r.sa.$a),n))instanceof kV){var u=a.tg;cj(r.sa,a.Zg,i),u=new qI(u,s)}else(i=ie(r,i=ne().uG,t))instanceof LF&&i.oa instanceof EJ&&Ws(r,new Cj(i=new AS(i=xl(Al(),new(U(DF).j)(["Expected the right-hand side of a `def` binding to be a block, but got a value of type ",".\\nMaybe try `val` if you're defining a value."]))),s=kl(Al(),new j([n])))),Ws(r,new Cj(i=new AS(i=xl(Al(),new(U(DF).j)(["Unbox requires a boxed type, but got ","."]))),n=kl(Al(),new j([n]))))}else if(t instanceof YJ){if(!Q$(u=de(r,n=t.Gk)))throw rk(u)&&Ws(r,new Cj(o=new AS(o=xl(Al(),new(U(DF).j)(["Expected a block variable, but "," is a value. 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A=s.b(),I=new a1(E(A),h1()),j=I,S=s.c();S!==h1();){var C=S.b(),z=new a1(E(C),h1());j=j.h=z,S=S.c()}D=I}if(mk(),D===h1())var N=h1();else{for(var T=new a1(new EV(D.b()),h1()),q=T,L=D.c();L!==h1();){var M=new a1(new EV(L.b()),h1());q=q.h=M,L=L.c()}N=T}var R=gk(0,d,N),B=_S(a,y),O=n=>{if(null!==n){var t=n.H();n=RI(R,n.G());var e=de(r,t.Ug).Ch;return e.f()?e=qF():(qv(e=e.v(),n,t,r),e=new LF(e)),n=e.f()?n:e.v(),t=de(r,t.Ug),Wt(r.Fa,ne().Uj,t,n),n}throw new pq(n)};if(B===h1())var F=h1();else{for(var P=B.b(),K=new a1(O(P),h1()),V=K,H=B.c();H!==h1();){var G=H.b(),J=new a1(O(G),h1());V=V.h=J,H=H.c()}F=K}var W=_S(u,b),Q=n=>{if(null!==n){var t=n.H(),e=FI(R,n.G()),i=(n=de(r,t.Xb)).Mf;return i.f()?i=qF():(Tv(i=i.v(),e,t,r),i=new LF(i)),e=i.f()?e:i.v(),t=de(r,t.Xb),n=xl(Al(),new(U(OH).j)([n.na()])),n=bE(gE(),n),WI(r,t,e,new TN(n)),e}throw new pq(n)};if(W===h1())var Y=h1();else{for(var _=W.b(),X=new a1(Q(_),h1()),Z=X,nn=W.c();nn!==h1();){var tn=nn.b(),en=new a1(Q(tn),h1());Z=Z.h=en,nn=nn.c()}Y=X}var 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0,In)}else if(t instanceof RJ){var Cn=t.Vl,zn=de(e,t.Sg).Zq;if(zn instanceof LF){var Nn=zn.oa,Tn=Av(n,Cn,new LF(Nn),e,r);if(null===Tn)throw new pq(Tn);var qn=new qI(Nn,Tn.Za)}else{if(qF()!==zn)throw new pq(zn);qn=Av(n,Cn,qF(),e,r)}if(null===qn)throw new pq(qn);var Ln=qn.Za,Mn=qn.zb,Rn=Ln,Bn=de(e,t.Sg);Wt(e.Fa,ne().Uj,Bn,Mn),Sn=new qI(void 0,Rn)}else if(t instanceof LJ){var On=t.kp,Fn=t.Ul,Pn=de(e,t.ok);n:{var Un=de(e,On);if(Q$(Un)){var Kn=HI(e,Un);if(null!==Kn)var Vn=Xi().pD,Hn=Kn.H(),Gn=null===Vn?null===Hn:Vn.d(Hn);else Gn=!1;if(Gn){var Jn=Kn.G();break n}e.w=On,Js(e,"Expected a region.")}e.w=On,Js(e,"Expected a region.")}Wt(e.Fa,ne().Vf,Pn,Jn);var Wn=de(e,t.ok).YM;if(Wn instanceof LF)var Qn=Av(n,Fn,new LF(Wn.oa),e,r);else{if(qF()!==Wn)throw new pq(Wn);Qn=Av(n,Fn,qF(),e,r)}if(null===Qn)throw new pq(Qn);var Yn=Qn.Za,_n=Qn.zb,Xn=Yn,Zn=no(eo(),_n);cj(e.sa,Jn,r),WI(e,Pn,Zn,Jn),Sn=new qI(void 0,Xn)}else if(t instanceof EJ){var nt=t.gj,tt=new Eg;_h();var 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I,XL.prototype.constructor=XL,(r=XL.prototype).vi=function(n){return ZL(0,n)},r.Na=function(){return new pM},r.gb=function(n){return ZL(0,n)},r.u=function(){return p1()},r.$classData=F({$9:0},!1,"scala.collection.immutable.Vector$",{$9:1,e:1,qo:1,gh:1,Nd:1,g:1});var eM,rM,iM,oM,sM,aM,uM,cM=function n(t,e,r){if(lf(),0!==e.a.length){32===t.ub&&fM(t);var i=e.a.length;switch(r){case 2:i=i-(r=(r=31&((1024-t.Va|0)>>>5|0))>>5|0),r),hM(t,r<<5),0>>10|0))>>10|0),r),hM(t,r<<10),0>>15|0))>>15|0),r),hM(t,r<<15),0>>20|0))>>20|0),r),hM(t,r<<20),0>>25|0)+i|0))throw OT("exceeding 2^31 elements");e.X(0,t.cf,r,i),hM(t,i<<25);break;default:throw new pq(r)}}};function fM(n){var t=32+n.Va|0,e=t^n.Va;n.Va=t,n.ub=0,lM(n,t,e)}function hM(n,t){if(0=e)throw OT("advance1("+t+", "+e+"): a1="+n.Ic+", a2="+n.Eb+", a3="+n.cc+", a4="+n.Cc+", a5="+n.pd+", a6="+n.cf+", depth="+n.dc);1024>e?(1>=n.dc&&(n.Eb=new(U(U(V)).j)(32),n.Eb.a[0]=n.Ic,n.dc=2),n.Ic=new 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VT,""+n)},r.$classData=F({u3:0},!1,"kiama.util.Severities$Error$",{u3:1,CI:1,e:1,i:1,m:1,g:1,bb:1,Hb:1,$e:1}),RG.prototype=new Mc,RG.prototype.constructor=RG,(r=RG.prototype).B=function(){return new yq(this)},r.l=function(){return 2249383},r.k=function(){return"Hint"},r.n=function(){return 0},r.p=function(){return"Hint"},r.o=function(n){throw KT(new VT,""+n)},r.$classData=F({v3:0},!1,"kiama.util.Severities$Hint$",{v3:1,CI:1,e:1,i:1,m:1,g:1,bb:1,Hb:1,$e:1}),OG.prototype=new Mc,OG.prototype.constructor=OG,(r=OG.prototype).B=function(){return new yq(this)},r.l=function(){return-658498292},r.k=function(){return"Information"},r.n=function(){return 0},r.p=function(){return"Information"},r.o=function(n){throw KT(new VT,""+n)},r.$classData=F({w3:0},!1,"kiama.util.Severities$Information$",{w3:1,CI:1,e:1,i:1,m:1,g:1,bb:1,Hb:1,$e:1}),PG.prototype=new Mc,PG.prototype.constructor=PG,(r=PG.prototype).B=function(){return new yq(this)},r.l=function(){return-1505867908},r.k=function(){return"Warning"},r.n=function(){return 0},r.p=function(){return"Warning"},r.o=function(n){throw KT(new VT,""+n)},r.$classData=F({x3:0},!1,"kiama.util.Severities$Warning$",{x3:1,CI:1,e:1,i:1,m:1,g:1,bb:1,Hb:1,$e:1}),JG.prototype=new I,JG.prototype.constructor=JG,(r=JG.prototype).ch=function(n){return n===this.$Q},r.Cg=function(n,t){return 0>=this.ha(n,t)},r.bh=function(n,t){return 0<=this.ha(n,t)},r.Bg=function(n,t){return 0>this.ha(n,t)},r.yg=function(n,t){return 0 { _value = _backup; return cell }\n }\n });\n // $getOp and $putOp are auto generated from the compiler\n cell[$getOp] = function() {\n return _value\n };\n cell[$putOp] = function(v) {\n _value = v;\n return $effekt.unit;\n };\n return cell\n }\n\n function Arena() {\n return {\n fields: [], // Array[Cell],\n fresh: function(init) {\n const cell = Cell(init)\n this.fields.push(cell)\n return cell;\n },\n backup: function() {\n return this.fields.map(c => c.backup())\n },\n restore: function(backup) {\n this.fields = backup.map(c => c());\n return this\n }\n }\n }\n\n const global = {\n fresh: function(init) { return Cell(init) },\n backup: function() {},\n restore: function(_) {}\n }\n\n // Lists / Pairs\n function Cons(head, tail) {\n return { head: head, tail: tail }\n }\n const Nil = null\n\n // reverseOnto[A, B, C](init: Frames[A, B], tail: Stack[B, C]): Stack[A, C]\n function reverseOnto(init, tail) {\n let rest = init;\n let result = tail;\n while (rest !== Nil) {\n result = Cons(rest.head, result)\n rest = rest.tail\n }\n return result\n }\n\n let _prompt = 2;\n\n // Monadic Style Runtime\n // ---------------------\n\n const toplevel = 1;\n\n // Result -- Trampoline\n function Step(c, k) {\n return { isStep: true, c: c, k: k }\n }\n function trampoline(r) {\n var res = r\n while (res !== null && res !== undefined && res.isStep) {\n res = res.c.apply(res.k)\n }\n return res\n }\n\n // Frame = A => Control[B]\n\n // Metacontinuations / Stacks\n // (frames: List, fields: [Cell], prompt: Int, tail: Stack) -> Stack\n function Stack(frames, arena, prompt, tail) {\n return { frames: frames, arena: arena, prompt: prompt, tail: tail }\n }\n function SubStack(frames, arena, backup, prompt, tail) {\n return { frames: frames, arena: arena, backup: backup, prompt: prompt, tail: tail }\n }\n const EmptyStack = null;\n\n // (stack: Stack, a: A) -> Step\n function apply(stack, a) {\n var s = stack;\n while (true) {\n if (s === EmptyStack) return a;\n const fs = s.frames;\n if (fs === Nil) { s = s.tail; continue }\n const result = fs.head(a);\n s.frames = fs.tail;\n return Step(result, s)\n }\n }\n\n // (subcont: Stack, stack: Stack) -> Stack\n function pushSubcont(subcont, stack) {\n var sub = subcont;\n var s = stack;\n\n while (sub !== EmptyStack) {\n s = Stack(sub.frames, sub.arena.restore(sub.backup), sub.prompt, s)\n sub = sub.tail\n }\n return s;\n }\n\n function flatMap(stack, f) {\n if (stack === EmptyStack) { return Stack(Cons(f, Nil), Arena(), null, stack) }\n var fs = stack.frames\n // it should be safe to mutate the frames field, since they are copied in the subcont\n stack.frames = Cons(f, fs)\n return stack\n }\n\n function splitAt(stack, p) {\n var sub = EmptyStack;\n var s = stack;\n\n while (s !== EmptyStack) {\n const currentPrompt = s.prompt;\n sub = SubStack(s.frames, s.arena, s.arena.backup(), currentPrompt, sub);\n s = s.tail;\n if (currentPrompt === p) { return Cons(sub, s) }\n }\n throw ("Prompt " + p + " not found")\n }\n\n function allocateInto(stack, p, cell) {\n var s = stack;\n\n while (s !== EmptyStack) {\n const currentPrompt = s.prompt\n if (currentPrompt === p) {\n return s.fields.push(cell);\n } else {\n s = s.tail\n }\n }\n throw ("Prompt " + p + " not found")\n }\n\n function withState(init, f) {\n return Control(k => {\n const cell = k.arena.fresh(init)\n return Step(f(cell), k)\n })\n }\n\n function withRegion(prog) {\n return Control(k => {\n return Step(prog(k.arena), k)\n })\n }\n\n function withStateIn(prompt, init, f) {\n const cell = Cell(init)\n\n if (prompt === toplevel) {\n return f(cell)\n } else {\n return Control(k => {\n allocateInto(k, prompt, cell);\n return Step(f(cell), k)\n })\n }\n }\n\n // Delimited Control\n function Control(apply) {\n const self = {\n apply: apply,\n run: () => trampoline(Step(self, Stack(Nil, global, toplevel, EmptyStack))),\n then: f => Control(k => Step(self, flatMap(k, f))),\n state: f => self.then(init => withState(init, f))\n }\n return self\n }\n\n const pure = a => Control(k => apply(k, a))\n\n const delayed = a => Control(k => apply(k, a()))\n\n const shift = (p, f) => Control(k => {\n const split = splitAt(k, p)\n const localCont = a => Control(k =>\n Step(pure(a), pushSubcont(split.head, k)))\n return Step(f(localCont), split.tail)\n })\n\n const callcc = f => Control(k => {\n return f(a => trampoline(apply(k, a)))\n })\n\n const abort = Control(k => $effekt.unit)\n\n\n const capture = f => {\n // [abort; f\n const action = () => f($effekt.unit).then(() => abort)\n return shift(toplevel)(k =>\n k({\n shouldRun: false,\n cont : () => k({ shouldRun: true, cont: action })\n })).then(a => a.shouldRun ? a.cont() : $effekt.pure(a.cont))\n }\n\n //const reset = (p, c => Control(k => Step(c, Stack(Nil, Arena(), p, k)))\n\n function handleMonadic(body) {\n const p = _prompt++;\n return Control(k => Step(body(p), Stack(Nil, Arena(), p, k)))\n }\n\n // Direct Style Runtime\n // --------------------\n\n // sealed trait Resumption[A, R]\n // case class Empty[A]() extends Resumption[A, A]\n // case class Segment[A, B, C](head: Stack[B, C], prompt: Prompt, tail: Resumption[A, B]) extends Resumption[A, C]\n class Segment {\n constructor(frames, prompt, region, backup, tail) {\n this.frames = frames;\n this.prompt = prompt;\n this.region = region;\n this.backup = backup;\n this.tail = tail;\n }\n }\n const Empty = null;\n\n // TODO maybe inline later to save native frames\n function handleOrRethrow(prompt, s, rest) {\n if (!(s instanceof Suspension)) throw s;\n\n const region = currentRegion\n const k = new Segment(reverseOnto(s.frames, rest), prompt, region, region.backup(), s.cont)\n if (s.prompt === prompt) {\n return s.body((value) => rewind(k, () => value))\n } else {\n throw new Suspension(s.prompt, s.body, Nil, k)\n }\n }\n\n function rewind(k, thunk) {\n if (k === Empty) {\n return thunk()\n } else {\n const prompt = k.prompt;\n const region = k.region;\n let rest = k.frames // the pure frames\n\n // The trampoline\n try {\n enterRegion(region);\n region.restore(k.backup);\n\n let curr = rewind(k.tail, thunk)\n while (rest !== Nil) {\n const f = rest.head\n rest = rest.tail\n curr = f(curr)\n }\n return curr\n } catch (s) {\n return handleOrRethrow(prompt, s, rest)\n } finally {\n leaveRegion()\n }\n }\n }\n\n\n // case class Suspend[A, X, Y, R](\n // body: Continuation[A, R] => R,\n // prompt: Prompt,\n // pure: Frames[X, Y],\n // cont: Resumption[A, X]\n // )\n class Suspension {\n constructor(p, body, frames, cont) {\n this.prompt = p;\n this.body = body;\n this.frames = frames;\n this.cont = cont;\n }\n }\n\n // initially the toplevel region.\n let currentRegion = global\n\n // a stack of regions\n let regions = []\n\n function enterRegion(r) {\n regions.push(currentRegion)\n currentRegion = r\n return r\n }\n\n function leaveRegion() {\n const leftRegion = currentRegion\n currentRegion = regions.pop()\n return leftRegion\n }\n\n return {\n // Common API\n // -----------\n constructor: (_, tag) => function() {\n return { __tag: tag, __data: Array.from(arguments) }\n },\n\n hole: function() { throw "Implementation missing" },\n\n // Monadic API\n // -----------\n pure: pure,\n callcc: callcc,\n capture: capture,\n delayed: delayed,\n handleMonadic: handleMonadic,\n ref: Cell,\n state: withState,\n shift: shift,\n _if: (c, thn, els) => c ? thn() : els(),\n withRegion: withRegion,\n\n\n // Direct style API\n // ----------------\n fresh: function(init) {\n return currentRegion.fresh(init)\n },\n\n freshPrompt: function() { return ++_prompt; },\n\n suspend: function(prompt, body) {\n _stacksize = 0;\n throw new Suspension(prompt, body, Nil, Empty)\n },\n suspend_bidirectional: function(prompt, caps, body) {\n throw new Suspension(prompt, body, Cons(thunk => thunk.apply(null, caps), Nil), Empty)\n },\n\n // suspension: the raised exception.\n push: function(suspension, frame) {\n if (!(suspension instanceof Suspension)) throw suspension;\n // Assuming `suspension` is a value or variable you want to return\n throw new Suspension(suspension.prompt, suspension.body,\n Cons(frame, suspension.frames), suspension.cont);\n },\n\n handle: function(prompt, s) {\n return handleOrRethrow(prompt, s, Nil)\n },\n\n freshRegion: function() {\n return enterRegion(new Arena)\n },\n\n leaveRegion: leaveRegion,\n\n global: global\n }\n})()\n\nObject.assign($effekt, $runtime);\n'),zs("js/effekt_builtins.js",'$effekt.show = function(obj) {\n if (!!obj && !!obj.__reflect) {\n const meta = obj.__reflect()\n return meta.__name + "(" + meta.__data.map($effekt.show).join(", ") + ")"\n }\n else if (!!obj && obj.__unit) {\n return "()";\n } else {\n return "" + obj;\n }\n}\n\n$effekt.equals = function(obj1, obj2) {\n if (!!obj1.__equals) {\n return obj1.__equals(obj2)\n } else {\n return (obj1.__unit && obj2.__unit) || (obj1 === obj2);\n }\n}\n\nfunction compare$prim(n1, n2) {\n if (n1 == n2) { return 0; }\n else if (n1 > n2) { return 1; }\n else { return -1; }\n}\n\n$effekt.compare = function(obj1, obj2) {\n if ($effekt.equals(obj1, obj2)) { return 0; }\n\n if (!!obj1 && !!obj2) {\n if (!!obj1.__reflect && !!obj2.__reflect) {\n const tagOrdering = compare$prim(obj1.__tag, obj2.__tag)\n if (tagOrdering != 0) { return tagOrdering; }\n\n const meta1 = obj1.__reflect().__data\n const meta2 = obj2.__reflect().__data\n\n const lengthOrdering = compare$prim(meta1.length, meta2.length)\n if (lengthOrdering != 0) { return lengthOrdering; }\n\n for (let i = 0; i < meta1.length; i++) {\n const contentOrdering = $effekt.compare(meta1[i], meta2[i])\n if (contentOrdering != 0) { return contentOrdering; }\n }\n\n return 0;\n }\n }\n\n return compare$prim(obj1, obj2);\n}\n\n$effekt.println = function println$impl(str) {\n console.log(str); return $effekt.unit;\n}\n\n$effekt.unit = { __unit: true }'),zs("js/web/dom.effekt",'module web/dom\n\nextern type Node\n\n// can be null\nextern pure def getElementById(id: String): Node =\n js "document.getElementById(${id})"\n\nextern pure def createElement(tag: String): Node =\n js "document.createElement(${tag})"\n\nextern pure def createTextNode(text: String): Node =\n js "document.createTextNode(${text})"\n\nextern pure def setAttribute(node: Node, key: String, value: String): Node =\n js "${node}.setAttribute(${key}, ${value})"\n\n// the string return type is wrong here...\nextern pure def getAttribute(node: Node, key: String): String =\n js "${node}.getAttribute(${key})"\n\nextern pure def appendChild(node: Node, child: Node): Node =\n js "${node}.appendChild(${child})"\n\nextern pure def innerHTML(node: Node, contents: String): Node =\n js "(function() { ${node}.innerHTML = ${contents}; return ${node} })()"\n\nextern type IdleDeadline\n\nextern pure def requestIdleCallback(callback: (IdleDeadline) => Unit at {io}): Unit =\n js "window.requestIdleCallback(deadline => ${callback}(deadline).run())"\n\nextern pure def didDimeout(deadline: IdleDeadline): Bool =\n js "${deadline}.didTimeout"\n\nextern pure def timeRemaining(deadline: IdleDeadline): Double =\n js "${deadline}.timeRemaining()"\n\nextern pure def onClick(node: Node, handler: () => Unit at {io}): Node =\n js "(function() { ${node}.onclick = () => ${handler}().run(); return ${node} })()"\n\nextern def sleep(n: Int): Unit =\n js "$effekt.callcc(k => window.setTimeout(() => k(null), ${n}))"\n\ndef clear(node: Node) = node.innerHTML("")\n'),zs("js/unsafe/cont.effekt",'module unsafe/cont\n\n// The type of a captured continuation\nextern type Cont[A, B]\n\n// we mark this as {io} since pure functions should not take block parameters.\nextern io def cont[A, B] { r: A => B / {} }: Cont[A, B] = js "${box r}"\n\n// This is unsafe if the continuation left the scope of the\n// capabilities it closed over\nextern async def apply[A, B](k: Cont[A, B], a: A): B / {} = js "${k}(${a})"\n'),zs("js/text/regex.effekt",'module text/regex\n\nimport string\n\nextern type Regex\n\nrecord Match(matched: String, index: Int)\n\nextern pure def regex(str: String): Regex =\n js "new RegExp(${str})"\n\ndef exec(reg: Regex, str: String): Option[Match] =\n undefinedToOption(reg.unsafeExec(str)) match {\n case None() => None()\n case Some(v) => Some(Match(v.matched, v.index))\n }\n\n// internal representation { matched: String, index: Int }\nextern type RegexMatch\nextern pure def matched(r: RegexMatch): String = js "${r}.matched"\nextern pure def index(r: RegexMatch): Int = js "${r}.index"\n\nextern js !!!MULTILINEMARKER!!!\nfunction regex$exec(reg, str) {\n var res = reg.exec(str);\n if (res === null) { return undefined }\n else { return { matched: res[0], index: res.index } }\n}\n!!!MULTILINEMARKER!!!\n\n// internals\nextern io def unsafeExec(reg: Regex, str: String): RegexMatch =\n js "regex$exec(${reg}, ${str})"\n'),zs("common/test.effekt",'import string\nimport process\n\ninterface Assertion {\n def assert(condition: Bool, msg: String): Unit\n}\n\ndef assertTrue(condition: Bool, msg: String) =\n do assert(condition, msg)\n\ndef assertTrue(condition: Bool) =\n do assert(condition, "Assertion failed")\n\ndef assertFalse(condition: Bool, msg: String) =\n do assert(not(condition), msg)\n\ndef assertFalse(condition: Bool) =\n do assert(not(condition), "Assertion failed")\n\ndef assert(obtained: Int, expected: Int, msg: String): Unit / Assertion =\n assertEqual(obtained, expected, msg) { (x, y) => x == y }\n\ndef assert(obtained: Bool, expected: Bool, msg: String): Unit / Assertion =\n assertEqual(obtained, expected, msg) { (x, y) => x == y }\n\ndef assert(obtained: Char, expected: Char, msg: String): Unit / Assertion =\n assertEqual(obtained, expected, msg) { (x, y) => x == y }\n\ndef assert(obtained: String, expected: String, msg: String): Unit / Assertion =\n assertEqual(obtained, expected, msg) { (x, y) => x == y }\n\ndef assert(obtained: Int, expected: Int): Unit / Assertion =\n assertEqual(obtained, expected) { (x, y) => x == y } { x => show(x) }\n\ndef assert(obtained: Bool, expected: Bool): Unit / Assertion =\n assertEqual(obtained, expected) { (x, y) => x == y } { x => show(x) }\n\ndef assert(obtained: Char, expected: Char): Unit / Assertion =\n assertEqual(obtained, expected) { (x, y) => x == y } { x => show(x) }\n\ndef assert(obtained: String, expected: String): Unit / Assertion =\n assertEqual(obtained, expected) { (x, y) => x == y } { x => show(x) }\n\ndef assertEqual[A](obtained: A, expected: A, msg: String): Unit / Assertion =\n assertEqual(obtained, expected, msg) { (x, y) => x.equals(y) }\n\ndef assertEqual[A](obtained: A, expected: A): Unit / Assertion =\n assertEqual(obtained, expected) { (x, y) => x.equals(y) } { x => x.genericShow }\n\ndef assertEqual[A](obtained: A, expected: A, msg: String) { equals: (A, A) => Bool }: Unit / Assertion =\n do assert(equals(obtained, expected), msg)\n\ndef assertEqual[A](obtained: A, expected: A) { equals: (A, A) => Bool } { show: A => String }: Unit / Assertion =\n do assert(equals(obtained, expected), "Obtained: " ++ show(obtained) ++ "\\n but expected:" ++ show(expected))\n\n\ninterface Test {\n def success(name: String): Unit\n def failure(name: String, msg: String): Unit\n}\n\ndef test(name: String) { body: => Unit / Assertion } =\n try { body(); do success(name) } with Assertion {\n def assert(condition, msg) = if (condition) resume(()) else do failure(name, msg)\n }\n\ndef suite(name: String) { body: => Unit / Test }: Bool = {\n println("Running suite: " ++ name);\n var failed = 0\n var passed = 0\n\n try { body() } with Test {\n def success(name) = {\n passed = passed + 1\n println(ANSI::GREEN ++ "+ " ++ name ++ "" ++ ANSI::RESET);\n resume(())\n }\n def failure(name, msg) = {\n failed = failed + 1\n println(ANSI::RED ++ "- (FAIL) " ++ name ++ "\\n " ++ msg ++ ANSI::RESET);\n resume(())\n }\n }\n if (failed > 0) {\n println(ANSI::RED ++ "Some tests failed (" ++ passed.show ++ " passed, " ++ failed.show ++ " failed)" ++ ANSI::RESET)\n false\n } else {\n println(ANSI::GREEN ++ "All tests passed (" ++ passed.show ++ " passed)" ++ ANSI::RESET)\n true\n }\n}\n\n/// Use as `def main() = mainSuite("...") { ... }`\ndef mainSuite(name: String) { body: => Unit / Test }: Unit = {\n val result = suite(name) { body() }\n val exitCode = if (result) 0 else 1\n exit(exitCode)\n}\n'),zs("common/effekt.effekt",'module effekt\n\nnamespace js {\n // Runtime\n extern include js "../js/effekt_runtime.js"\n\n // Builtins\n extern include js "../js/effekt_builtins.js"\n}\n\nnamespace chez {\n\n // All Chez Scheme backends\n // ------------------------\n extern include chez "../chez/common/effekt_primitives.ss"\n\n // call/cc based implementation\n // ----------------------------\n extern include chezCallCC "../chez/callcc/seq0.ss"\n extern include chezCallCC "../chez/callcc/tail0.ss"\n extern include chezCallCC "../chez/callcc/effekt.ss"\n\n // CPS implementation\n // ------------------\n extern include chezLift "../chez/lift/effekt.ss"\n\n // Monadic implementation\n // ----------------------\n extern include chezMonadic "../chez/monadic/seq0.ss"\n extern include chezMonadic "../chez/monadic/effekt.ss"\n}\n\nnamespace ml {\n extern include ml "../ml/effekt.sml"\n}\n\nnamespace llvm {\n extern include llvm "../llvm/rts.ll"\n extern include llvm "../llvm/forward-declare-c.ll"\n}\n\n// Showing and debugging\n// =====================\n\nextern def println(value: String): Unit =\n js "$effekt.println(${value})"\n chez "(println_impl ${value})"\n llvm !!!MULTILINEMARKER!!!\n call void @c_io_println_String(%Pos ${value})\n ret %Pos zeroinitializer ; Unit\n !!!MULTILINEMARKER!!!\n ml { print(value); print("\\n") }\n\nextern io def print(value: String): Unit =\n ml "print ${value}"\n\ndef println(value: Int): Unit = println(value.show)\ndef println(value: Unit): Unit = println(value.show)\ndef println(value: Double): Unit = println(value.show)\ndef println(value: Bool): Unit = println(value.show)\ndef println(value: Byte): Unit = println(value.show)\n\nextern pure def show(value: Int): String =\n js "\'\' + ${value}"\n chez "(show-number ${value})"\n ml "show\'int ${value}"\n llvm !!!MULTILINEMARKER!!!\n %z = call %Pos @c_buffer_show_Int(%Int ${value})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\ndef show(value: Unit): String = "()"\n\nextern pure def show(value: Double): String =\n js "\'\' + ${value}"\n chez "(show-number ${value})"\n ml "show\'real ${value}"\n llvm !!!MULTILINEMARKER!!!\n %z = call %Pos @c_buffer_show_Double(%Double ${value})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\ndef show(value: String): String =\n value\n\ndef show(value: Bool): String =\n if (value) "true" else "false"\n\nextern pure def show(value: Char): String =\n js "String.fromCodePoint(${value})"\n chez "(string (integer->char ${value}))"\n ml "str (chr ${value})"\n llvm !!!MULTILINEMARKER!!!\n %z = call %Pos @c_buffer_show_Char(%Int ${value})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\nextern pure def show(value: Byte): String =\n llvm !!!MULTILINEMARKER!!!\n %z = call %Pos @c_buffer_show_Byte(i8 ${value})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\nextern pure def genericShow[R](value: R): String =\n js "$effekt.show(${value})"\n chez "(show_impl ${value})"\n\nextern io def inspect[R](value: R): Unit =\n js { println(genericShow(value)) }\n chez { println(genericShow(value)) }\n\n\n// Strings\n// =======\nextern pure def infixConcat(s1: String, s2: String): String =\n js "((${s1}) + (${s2}))"\n chez "(string-append ${s1} ${s2})"\n ml "${s1} ^ ${s2}"\n llvm !!!MULTILINEMARKER!!!\n %spz = call %Pos @c_buffer_concatenate(%Pos ${s1}, %Pos ${s2})\n ret %Pos %spz\n !!!MULTILINEMARKER!!!\n\nextern pure def length(str: String): Int =\n js "${str}.length"\n chez "(string-length ${str})"\n ml "String.size ${str}"\n llvm !!!MULTILINEMARKER!!!\n %x = call %Int @c_buffer_length(%Pos ${str})\n call void @erasePositive(%Pos ${str})\n ret %Int %x\n !!!MULTILINEMARKER!!!\n\nextern pure def unsafeSubstring(str: String, from: Int, to: Int): String =\n js "${str}.substring(${from}, ${to})"\n chez "(substring ${str} ${from} ${to})" // potentially raises: "Exception in substring: ..."\n ml "String.extract (${str}, ${from}, SOME (${to} - ${from}))"\n llvm !!!MULTILINEMARKER!!!\n %x = call %Pos @c_buffer_substring(%Pos ${str}, i64 ${from}, i64 ${to})\n ret %Pos %x\n !!!MULTILINEMARKER!!!\n\n\n// Side effecting ops\n// ==================\n\nextern io def random(): Double =\n js "Math.random()"\n chez "(random 1.0)"\n ml "mlRandomReal ()"\n\n// References and state\n// ====================\n// the following type is defined in builtins.scala\n// interface Ref[T] { def get(): T; def put(t: T): Unit }\n// extern io def freshIn[T](t: T) {r: Region}: Ref[T] at {r} = js "r.fresh(${t})"\n// extern io def freshGlobal[T](t: T): Ref[T] at {global} = js "$effekt.fresh(${t})"\n\n\n// Equality\n// ========\n/**\n * Result of comparison between two objects according to some order:\n *\n * - `Less()` means that the first object is *before* the first in the order,\n * - `Equal()` means that the two objects are the same in the order,\n * - and `Greater()` means that the second object is *before* the first in the order.\n */\ntype Ordering {\n Less();\n Equal();\n Greater()\n}\n\nextern pure def genericCompareImpl[R](x: R, y: R): Int =\n js "$effekt.compare(${x}, ${y})"\n\n // Compares two values of the same type, returning an `Ordering`.\ndef genericCompare[R](x: R, y: R): Ordering = {\n genericCompareImpl(x, y) match {\n case -1 => Less()\n case 0 => Equal()\n case 1 => Greater()\n case _ => <{ "Impossible: JS comparison returned invalid value!" }>\n }\n}\n\ndef show(o: Ordering): String = o match {\n case Less() => "Less()"\n case Equal() => "Equal()"\n case Greater() => "Greater()"\n}\n\ndef println(o: Ordering): Unit = println(o.show)\n\n\n// Comparison ops\n// ==============\n\n/**\n * Structural equality: Not available in the LLVM backend\n */\nextern pure def equals[R](x: R, y: R): Bool =\n js "$effekt.equals(${x}, ${y})"\n chez "(equal? ${x} ${y})"\n ml "${x} = ${y}"\n\ndef differsFrom[R](x: R, y: R): Bool =\n not(equals(x, y))\n\n// TODO fix this in the pattern matching compiler\nextern pure def infixEq(x: Unit, y: Unit): Bool =\n js "true"\n chez "#t"\n ml "true"\n\nextern pure def infixEq(x: Int, y: Int): Bool =\n js "${x} === ${y}"\n chez "(equal? ${x} ${y})"\n ml "${x} = ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = icmp eq %Int ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixNeq(x: Int, y: Int): Bool =\n js "${x} !== ${y}"\n chez "(not (equal? ${x} ${y}))"\n ml "${x} <> ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = icmp ne %Int ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixEq(x: Char, y: Char): Bool =\n js "${x} === ${y}"\n chez "(equal? ${x} ${y})"\n ml "${x} = ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = icmp eq %Int ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixNeq(x: Char, y: Char): Bool =\n js "${x} !== ${y}"\n chez "(not (equal? ${x} ${y}))"\n ml "${x} <> ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = icmp ne %Int ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixEq(x: String, y: String): Bool =\n js "${x} === ${y}"\n chez "(equal? ${x} ${y})"\n ml "${x} = ${y}"\n llvm !!!MULTILINEMARKER!!!\n %res = call %Pos @c_buffer_eq(%Pos ${x}, %Pos ${y})\n ret %Pos %res\n !!!MULTILINEMARKER!!!\n\ndef infixNeq(x: String, y: String): Bool = not(x == y)\n\nextern pure def infixEq(x: Bool, y: Bool): Bool =\n js "${x} === ${y}"\n chez "(equal? ${x} ${y})"\n ml "${x} = ${y}"\n llvm !!!MULTILINEMARKER!!!\n %slim_x = extractvalue %Pos ${x}, 0\n %slim_y = extractvalue %Pos ${y}, 0\n %slim_z = icmp eq i64 %slim_x, %slim_y\n %fat_z = zext i1 %slim_z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixNeq(x: Bool, y: Bool): Bool =\n js "${x} !== ${y}"\n chez "(not (equal? ${x} ${y}))"\n ml "${x} <> ${y}"\n llvm !!!MULTILINEMARKER!!!\n %slim_x = extractvalue %Pos ${x}, 0\n %slim_y = extractvalue %Pos ${y}, 0\n %slim_z = icmp ne i64 %slim_x, %slim_y\n %fat_z = zext i1 %slim_z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\n\n// Math ops\n// ========\nextern pure def infixAdd(x: Int, y: Int): Int =\n js "(${x} + ${y})"\n chez "(+ ${x} ${y})"\n ml "(${x}: int) + ${y}"\n llvm "%z = add %Int ${x}, ${y} ret %Int %z"\n\nextern pure def infixMul(x: Int, y: Int): Int =\n js "(${x} * ${y})"\n chez "(* ${x} ${y})"\n ml "(${x}: int) * ${y}"\n llvm "%z = mul %Int ${x}, ${y} ret %Int %z"\n\nextern pure def infixDiv(x: Int, y: Int): Int =\n js "Math.floor(${x} / ${y})"\n chez "(floor (/ ${x} ${y}))"\n ml "(${x}: int) div ${y}"\n llvm "%z = sdiv %Int ${x}, ${y} ret %Int %z"\n\nextern pure def infixSub(x: Int, y: Int): Int =\n js "(${x} - ${y})"\n chez "(- ${x} ${y})"\n ml "(${x}: int) - ${y}"\n llvm "%z = sub %Int ${x}, ${y} ret %Int %z"\n\nextern pure def mod(x: Int, y: Int): Int =\n js "(${x} % ${y})"\n chez "(modulo ${x} ${y})"\n ml "(${x}: int) mod ${y}"\n llvm "%z = srem %Int ${x}, ${y} ret %Int %z"\n\nextern pure def infixAdd(x: Double, y: Double): Double =\n js "(${x} + ${y})"\n chez "(+ ${x} ${y})"\n ml "(${x}: real) + ${y}"\n llvm "%z = fadd %Double ${x}, ${y} ret %Double %z"\n\nextern pure def infixMul(x: Double, y: Double): Double =\n js "(${x} * ${y})"\n chez "(* ${x} ${y})"\n ml "(${x}: real) * ${y}"\n llvm "%z = fmul %Double ${x}, ${y} ret %Double %z"\n\nextern pure def infixSub(x: Double, y: Double): Double =\n js "(${x} - ${y})"\n chez "(- ${x} ${y})"\n ml "(${x}: real) - ${y}"\n llvm "%z = fsub %Double ${x}, ${y} ret %Double %z"\n\nextern pure def infixDiv(x: Double, y: Double): Double =\n js "(${x} / ${y})"\n chez "(/ ${x} ${y})"\n ml "(${x}: real) / ${y}"\n llvm "%z = fdiv %Double ${x}, ${y} ret %Double %z"\n\nextern pure def cos(x: Double): Double =\n js "Math.cos(${x})"\n chez "(cos ${x})"\n ml "Math.cos ${x}"\n\nextern pure def sin(x: Double): Double =\n js "Math.sin(${x})"\n chez "(sin ${x})"\n ml "Math.sin ${x}"\n\nextern pure def atan(x: Double): Double =\n js "Math.atan(${x})"\n chez "(atan ${x})"\n ml "Math.atan ${x}"\n\nextern pure def tan(x: Double): Double =\n js "Math.tan(${x})"\n chez "(tan ${x})"\n ml "Math.tan ${x}"\n\nextern pure def sqrt(x: Double): Double =\n js "Math.sqrt(${x})"\n chez "(sqrt ${x})"\n ml "Math.sqrt ${x}"\n llvm "%z = call %Double @llvm.sqrt.f64(double ${x}) ret %Double %z"\n\ndef square(x: Double): Double = x * x\n\ndef neg(n: Double): Double =\n 0.0 - n\n\ndef max(n: Double, m: Double): Double =\n if (n > m) n else m\n\ndef abs(n: Double): Double =\n max(n, neg(n))\n\nextern pure def log(x: Double): Double =\n js "Math.log(${x})"\n chez "(log ${x})"\n ml "Math.ln ${x}"\n\nextern pure def log1p(x: Double): Double =\n js "Math.log1p(${x})"\n chez "(log (+ ${x} 1))"\n ml "Math.ln (${x} + 1.0)"\n\nextern pure def exp(x: Double): Double =\n js "Math.exp(${x})"\n chez "(exp ${x})"\n ml "Math.exp ${x}"\n\ndef pow(base: Double, exponent: Int): Double = {\n def loop(base: Double, exponent: Int, acc: Double): Double = {\n if (exponent == 0) acc\n else if (exponent.mod(2) == 0) loop(base * base, exponent / 2, acc) // even exponent\n else loop(base, exponent - 1, acc * base) // odd exponent\n }\n loop(base, exponent, 1.0)\n}\n\nextern pure def pow(base: Double, exponent: Double): Double =\n js "Math.pow(${base}, ${exponent})"\n chez "(expt ${base} ${exponent})"\n ml "Math.pow ${base} ${exponent}"\n\n// since we do not have "extern val", yet\nextern pure def _pi(): Double =\n js "Math.PI"\n chez "(* 4 (atan 1))"\n ml "Math.pi"\n\nval PI: Double = _pi()\n\nextern pure def toInt(d: Double): Int =\n js "Math.trunc(${d})"\n chez "(flonum->fixnum ${d})"\n ml "Real.trunc ${d}"\n llvm "%z = fptosi double ${d} to %Int ret %Int %z"\n\nextern pure def toDouble(d: Int): Double =\n js "${d}"\n chez "${d}"\n ml "Real.fromInt ${d}"\n llvm "%z = sitofp i64 ${d} to double ret double %z"\n\nextern pure def round(d: Double): Int =\n js "Math.round(${d})"\n chez "(round ${d})"\n ml "Real.round ${d}"\n llvm !!!MULTILINEMARKER!!!\n %i = call %Double @llvm.round.f64(double ${d})\n %z = fptosi double %i to %Int ret %Int %z\n !!!MULTILINEMARKER!!!\n\ndef round(d: Double, digits: Int): Double = {\n val factor = pow(10.0, digits)\n round(d * factor).toDouble / factor\n}\n\nextern pure def floor(d: Double): Int =\n js "Math.floor(${d})"\n chez "(flonum->fixnum (floor ${d}))"\n ml "Real.floor ${d}"\n llvm !!!MULTILINEMARKER!!!\n %i = call %Double @llvm.floor.f64(double ${d})\n %z = fptosi double %i to %Int ret %Int %z\n !!!MULTILINEMARKER!!!\n\nextern pure def ceil(d: Double): Int =\n js "Math.ceil(${d})"\n chez "(flonum->fixnum (ceiling ${d}))"\n ml "Real.ceil ${d}"\n llvm !!!MULTILINEMARKER!!!\n %i = call %Double @llvm.ceil.f64(double ${d})\n %z = fptosi double %i to %Int ret %Int %z\n !!!MULTILINEMARKER!!!\n\ndef min(n: Int, m: Int): Int =\n if (n < m) n else m\n\ndef max(n: Int, m: Int): Int =\n if (n > m) n else m\n\ndef neg(n: Int): Int =\n 0 - n\n\ndef abs(n: Int): Int =\n max(n, neg(n))\n\n\nextern pure def infixLt(x: Int, y: Int): Bool =\n js "(${x} < ${y})"\n chez "(< ${x} ${y})"\n ml "(${x}: int) < ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = icmp slt %Int ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixLte(x: Int, y: Int): Bool =\n js "(${x} <= ${y})"\n chez "(<= ${x} ${y})"\n ml "(${x}: int) <= ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = icmp sle %Int ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixGt(x: Int, y: Int): Bool =\n js "(${x} > ${y})"\n chez "(> ${x} ${y})"\n ml "(${x}: int) > ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = icmp sgt %Int ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixGte(x: Int, y: Int): Bool =\n js "(${x} >= ${y})"\n chez "(>= ${x} ${y})"\n ml "(${x}: int) >= ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = icmp sge %Int ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixEq(x: Double, y: Double): Bool =\n js "${x} === ${y}"\n chez "(= ${x} ${y})"\n ml "(${x}: real) = ${y}"\n\nextern pure def infixNeq(x: Double, y: Double): Bool =\n js "${x} !== ${y}"\n chez "(not (= ${x} ${y}))"\n ml "(${x}: real) <> ${y}"\n\nextern pure def infixLt(x: Double, y: Double): Bool =\n js "(${x} < ${y})"\n chez "(< ${x} ${y})"\n ml "(${x}: real) < ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = fcmp olt %Double ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixLte(x: Double, y: Double): Bool =\n js "(${x} <= ${y})"\n chez "(<= ${x} ${y})"\n ml "(${x}: real) <= ${y}"\n\nextern pure def infixGt(x: Double, y: Double): Bool =\n js "(${x} > ${y})"\n chez "(> ${x} ${y})"\n ml "(${x}: real) > ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = fcmp ogt %Double ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixGte(x: Double, y: Double): Bool =\n js "(${x} >= ${y})"\n chez "(>= ${x} ${y})"\n ml "(${x}: real) >= ${y}"\n\n// TODO do we really need those? if yes, move to string.effekt\nextern pure def infixLt(x: String, y: String): Bool =\n js "(${x} < ${y})"\n chez "(< ${x} ${y})"\n ml "(${x}: string) < ${y}"\n\nextern pure def infixLte(x: String, y: String): Bool =\n js "(${x} <= ${y})"\n chez "(<= ${x} ${y})"\n ml "(${x}: string) <= ${y}"\n\nextern pure def infixGt(x: String, y: String): Bool =\n js "(${x} > ${y})"\n chez "(> ${x} ${y})"\n ml "(${x}: string) > ${y}"\n\nextern pure def infixGte(x: String, y: String): Bool =\n js "(${x} >= ${y})"\n chez "(>= ${x} ${y})"\n ml "(${x}: string) >= ${y}"\n\n\n// Boolean operations\n// ==================\nextern pure def not(b: Bool): Bool =\n js "!${b}"\n chez "(not ${b})"\n ml "not ${b}"\n llvm !!!MULTILINEMARKER!!!\n %p = extractvalue %Pos ${b}, 0\n %q = xor i64 1, %p\n %adt_q = insertvalue %Pos zeroinitializer, i64 %q, 0\n ret %Pos %adt_q\n !!!MULTILINEMARKER!!!\n\ndef infixOr { first: => Bool } { second: => Bool }: Bool =\n if (first()) true else second()\n\ndef infixAnd { first: => Bool } { second: => Bool }: Bool =\n if (first()) second() else false\n\n\n// Bitwise operations\n// ==================\nextern pure def bitwiseShl(x: Int, y: Int): Int =\n js "(${x} << ${y})"\n chez "(ash ${x} ${y})"\n llvm "%z = shl %Int ${x}, ${y} ret %Int %z"\n\nextern pure def bitwiseAnd(x: Int, y: Int): Int =\n js "(${x} & ${y})"\n chez "(logand ${x} ${y})"\n llvm "%z = and %Int ${x}, ${y} ret %Int %z"\n\nextern pure def bitwiseXor(x: Int, y: Int): Int =\n js "(${x} ^ ${y})"\n chez "(logxor ${x} ${y})"\n llvm "%z = xor %Int ${x}, ${y} ret %Int %z"\n\n\n// Byte operations\n// ===============\nextern pure def toByte(n: Int): Byte =\n js "${n}"\n llvm "%z = trunc %Int ${n} to %Byte ret %Byte %z"\n\nextern pure def toInt(n: Byte): Int =\n js "${n}"\n llvm "%z = zext %Byte ${n} to %Int ret %Int %z"\n\n\n// Undefined and Null\n// ==================\n// Should only be used for interop with FFI, since values in Effekt\n// should not be undefined.\n//\n// js: undefined || null\n// chez: #f\n// ml: NONE (of option \'a)\n// llvm: null?\n\n/**\n * The value used by the FFI to represent undefined values\n */\nextern pure def undefined[A](): A =\n js "undefined"\n chez "#f"\n ml "NONE"\n\n/**\n * Is an FFI value undefined?\n */\nextern pure def isUndefined[A](value: A): Bool =\n js "(${value} === undefined || ${value} === null)"\n chez "(eq? ${value} #f)"\n ml "Option.isSome ${value}"\n\n\n// Tuples\n// ======\nrecord Tuple2[A, B](first: A, second: B)\nrecord Tuple3[A, B, C](first: A, second: B, third: C)\nrecord Tuple4[A, B, C, D](first: A, second: B, third: C, fourth: D)\nrecord Tuple5[A, B, C, D, E](first: A, second: B, third: C, fourth: D, fifth: E)\nrecord Tuple6[A, B, C, D, E, F](first: A, second: B, third: C, fourth: D, fifth: E, sixth: F)\n\n\n// Control Flow\n// ============\ninterface Control {\n def break(): Unit\n def continue(): Unit\n}\n\ndef loop { f: () => Unit }: Unit = {\n def go(): Unit = { f(); go() }\n go()\n}\n\ndef loop { f: {Control} => Unit }: Unit = try {\n def go(): Unit = { f {label}; go() }\n go()\n} with label: Control {\n def break() = ()\n def continue() = loop { f }\n}\n\n/**\n * Calls provided action repeatedly. `start` is inclusive, `end` is not.\n */\ndef each(start: Int, end: Int) { action: (Int) => Unit } = {\n def loop(i: Int): Unit =\n if (i < end) { action(i); loop(i + 1) }\n\n loop(start)\n}\n\n/**\n * Calls provided action repeatedly with support for breaking. `start` is inclusive, `end` is not.\n */\ndef each(start: Int, end: Int) { action: (Int) {Control} => Unit } = {\n var i = start;\n loop { {l} =>\n if (i < end) { val el = i; i = i + 1; action(el){l} }\n else { l.break() }\n }\n}\n\ndef repeat(n: Int) { action: () => Unit } = each(0, n) { n => action() }\n\ndef repeat(n: Int) { action: () {Control} => Unit } = each(0, n) { (n) {l} => action() {l} }\n\nnamespace internal {\n namespace boxing {\n // For boxing polymorphic values\n extern type BoxedUnit\n extern pure def boxUnit(u: Unit): Unit =\n extern pure def unboxUnit(u: Unit): Unit =\n\n extern type BoxedInt\n extern pure def boxInt(n: Int): BoxedInt =\n llvm !!!MULTILINEMARKER!!!\n %boxed1 = insertvalue %Pos zeroinitializer, i64 ${n}, 0\n %boxed2 = insertvalue %Pos %boxed1, %Object null, 1\n ret %Pos %boxed2\n !!!MULTILINEMARKER!!!\n extern pure def unboxInt(b: BoxedInt): Int =\n llvm !!!MULTILINEMARKER!!!\n %unboxed = extractvalue %Pos ${b}, 0\n ret %Int %unboxed\n !!!MULTILINEMARKER!!!\n\n extern type BoxedByte\n extern pure def boxByte(n: Byte): BoxedByte =\n llvm !!!MULTILINEMARKER!!!\n %extended = sext i8 ${n} to i64\n %boxed1 = insertvalue %Pos zeroinitializer, i64 %extended, 0\n %boxed2 = insertvalue %Pos %boxed1, %Object null, 1\n ret %Pos %boxed2\n !!!MULTILINEMARKER!!!\n extern pure def unboxByte(b: BoxedByte): Byte =\n llvm !!!MULTILINEMARKER!!!\n %unboxed = extractvalue %Pos ${b}, 0\n %truncated = trunc i64 %unboxed to i8\n ret i8 %truncated\n !!!MULTILINEMARKER!!!\n\n extern type BoxedChar\n extern pure def boxChar(c: Char): BoxedChar =\n llvm !!!MULTILINEMARKER!!!\n %boxed1 = insertvalue %Pos zeroinitializer, i64 ${c}, 0\n %boxed2 = insertvalue %Pos %boxed1, %Object null, 1\n ret %Pos %boxed2\n !!!MULTILINEMARKER!!!\n extern pure def unboxChar(b: BoxedChar): Char =\n llvm !!!MULTILINEMARKER!!!\n %unboxed = extractvalue %Pos ${b}, 0\n ret %Int %unboxed\n !!!MULTILINEMARKER!!!\n\n extern type BoxedBool\n extern pure def boxBool(b: Bool): BoxedBool =\n extern pure def unboxBool(b: BoxedBool): Bool =\n\n extern type BoxedDouble\n extern pure def boxDouble(d: Double): BoxedDouble =\n llvm !!!MULTILINEMARKER!!!\n %n = bitcast double ${d} to i64\n %boxed1 = insertvalue %Pos zeroinitializer, i64 %n, 0\n %boxed2 = insertvalue %Pos %boxed1, %Object null, 1\n ret %Pos %boxed2\n !!!MULTILINEMARKER!!!\n extern pure def unboxDouble(b: BoxedDouble): Double =\n llvm !!!MULTILINEMARKER!!!\n %unboxed = extractvalue %Pos ${b}, 0\n %d = bitcast i64 %unboxed to double\n ret %Double %d\n !!!MULTILINEMARKER!!!\n }\n}\n'),zs("common/args.effekt",'module args\n\nextern io def commandLineArgs(): List[String] =\n js { js::commandLineArgs() }\n chez { chez::commandLineArgs() }\n ml { ml::commandLineArgs() }\n llvm { llvm::commandLineArgs() }\n\nnamespace js {\n extern type Args // = Array[String]\n\n extern io def nativeArgs(): Args = js "process.argv.slice(1)"\n\n extern io def argCount(args: Args): Int = js "${args}.length"\n\n extern io def argument(args: Args, i: Int): String = js "${args}[${i}]"\n\n def commandLineArgs(): List[String] = {\n def toList(args: Args, start: Int, acc: List[String]): List[String] =\n if (start < 1) { acc }\n else args.toList(start - 1, Cons(args.argument(start), acc))\n\n val args = nativeArgs()\n args.toList(args.argCount - 1, Nil())\n }\n}\n\nnamespace chez {\n extern type Args // = CSList[String]\n\n extern io def nativeArgs(): Args =\n chez "(cdr (command-line))"\n\n extern pure def isEmpty(l: Args): Bool =\n chez "(null? ${l})"\n\n extern pure def head(l: Args): String =\n chez "(car ${l})"\n\n extern pure def tail(l: Args): Args =\n chez "(cdr ${l})"\n\n def toList(l: Args): List[String] =\n if (l.isEmpty) Nil() else Cons(l.head, l.tail.toList)\n\n def commandLineArgs(): List[String] = nativeArgs().toList\n}\n\nnamespace ml {\n\n // MLList[String]\n // we inline these from mllist to not have a dependency\n extern type Args\n\n extern io def nativeArgs(): Args =\n ml "CommandLine.arguments ()"\n\n extern pure def isEmpty(args: Args): Bool =\n ml "null ${args}"\n\n extern io def first(a: Args): String =\n ml "hd ${a}"\n\n extern io def rest(a: Args): Args =\n ml "tl ${a}"\n\n\n def commandLineArgs(): List[String] = {\n def toList(args: Args): List[String] =\n if (args.isEmpty) Nil() else Cons(args.first, args.rest.toList)\n nativeArgs().toList\n }\n}\n\nnamespace llvm {\n extern io def argCount(): Int =\n llvm !!!MULTILINEMARKER!!!\n %c = call %Int @c_get_argc()\n ret %Int %c\n !!!MULTILINEMARKER!!!\n\n extern io def argument(i: Int): String =\n llvm !!!MULTILINEMARKER!!!\n %s = call %Pos @c_get_arg(%Int ${i})\n ret %Pos %s\n !!!MULTILINEMARKER!!!\n\n def commandLineArgs(): List[String] = {\n def toList(start: Int, acc: List[String]): List[String] =\n if (start < 1) { acc }\n else toList(start - 1, Cons(argument(start), acc))\n\n toList(argCount() - 1, Nil())\n }\n}\n'),zs("common/ref.effekt",'module ref\n\nimport effekt\n\nextern js !!!MULTILINEMARKER!!!\nfunction set$impl(ref, value) {\n ref.value = value;\n return $effekt.unit;\n}\n!!!MULTILINEMARKER!!!\n\n/**\n * Global, mutable references\n */\nextern type Ref[T]\n\n/**\n * Allocates a new reference of size `size`, keeping its value _undefined_.\n * Prefer using `ref` constructor instead to ensure that the value is defined.\n */\nextern global def allocate[T](): Ref[T] =\n js "{ value: undefined }"\n chez "(box #f)"\n llvm !!!MULTILINEMARKER!!!\n %z = call %Pos @c_ref_fresh(%Pos zeroinitializer)\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\n/**\n * Creates a new reference with the initial value `init`.\n */\nextern global def ref[T](init: T): Ref[T] =\n js "{ value: ${init} }"\n chez "(box ${init})"\n ml "ref ${init}"\n llvm !!!MULTILINEMARKER!!!\n %z = call %Pos @c_ref_fresh(%Pos ${init})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\n/**\n * Gets the referenced element of the `ref` in constant time.\n */\nextern global def get[T](ref: Ref[T]): T =\n js "${ref}.value"\n chez "(unbox ${ref})"\n ml "!${ref}"\n llvm !!!MULTILINEMARKER!!!\n %z = call %Pos @c_ref_get(%Pos ${ref})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\n/**\n * Sets the referenced element of the `ref` to `value` in constant time.\n */\nextern global def set[T](ref: Ref[T], value: T): Unit =\n js "set$impl(${ref}, ${value})"\n chez "(set-box! ${ref} ${value})"\n ml "${ref} := ${value}"\n llvm !!!MULTILINEMARKER!!!\n %z = call %Pos @c_ref_set(%Pos ${ref}, %Pos ${value})\n ret %Pos %z\n !!!MULTILINEMARKER!!!'),zs("common/list.effekt",'module list\n\nimport effekt\nimport option\nimport exception\n\n// Immutable linked list for finite sequences of elements.\ntype List[A] {\n Nil();\n Cons(head: A, tail: List[A])\n}\n\n// Create an empty list.\n//\n// O(1)\ndef empty[A](): List[A] = Nil()\n\n// Create a list with one element.\n//\n// O(1)\ndef singleton[A](x: A): List[A] = Cons(x, Nil())\n\n// Create a list of length `size` where all elements are `default`.\n//\n// O(size)\ndef fill[A](size: Int, default: A): List[A] = {\n build(size) { i => default }\n}\n\n// Create a list from a function `index` of given `size`.\n//\n// O(size)\ndef build[A](size: Int) { index: Int => A }: List[A] = {\n var result = empty()\n each(0, size) { i =>\n result = Cons(index(i), result)\n }\n result.reverse\n}\n\n// Check if list is empty.\n//\n// O(1)\ndef isEmpty[A](l: List[A]): Bool = l match {\n case Nil() => true\n case Cons(a, rest) => false\n}\n\n// Check if list is nonempty.\n//\n// O(1)\ndef nonEmpty[A](l: List[A]): Bool = l match {\n case Nil() => false\n case Cons(a, rest) => true\n}\n\n// Return the first element of a given list.\n// Throws a `MissingValue` exception if it\'s empty.\n//\n// O(1)\ndef head[A](l: List[A]): A / Exception[MissingValue] = l match {\n case Nil() => do raise(MissingValue(), "Trying to get the head of an empty list")\n case Cons(a, rest) => a\n}\n\n// Return all elements of a given list except the first element.\n// Throws a `MissingValue` exception if it\'s empty.\n//\n// O(1)\ndef tail[A](l: List[A]): List[A] / Exception[MissingValue] = l match {\n case Nil() => do raise(MissingValue(), "Trying to get the head of an empty list")\n case Cons(a, rest) => rest\n}\n\n// Return the first element of a given list.\n// Returns `None()` if it\'s empty.\n//\n// O(1)\ndef headOption[A](l: List[A]): Option[A] = l match {\n case Nil() => None()\n case Cons(a, rest) => Some(a)\n}\n\n// Returns the last element of a given list.\n//\n// O(N)\ndef last[A](l: List[A]): A / Exception[MissingValue] = {\n def go(list: List[A]): A = {\n list match {\n case Nil() => do raise(MissingValue(), "Trying to get the last element of an empty list")\n case Cons(x, Nil()) => x\n case Cons(x, xs) => go(xs)\n }\n }\n\n go(l)\n}\n\n// Get the value at given index.\n//\n// O(N)\ndef get[A](list: List[A], index: Int): A / Exception[OutOfBounds] = {\n def go(list: List[A], i: Int): A = {\n list match {\n case Nil() => do raise(OutOfBounds(), "Trying to get an element outside the bounds of a list")\n case Cons(x, xs) and i == 0 => x\n case Cons(x, xs) => go(xs, i - 1)\n }\n }\n\n go(list, index)\n}\n\n// Traverse a list, applying the given action on every element.\n//\n// O(N)\ndef foreach[A](l: List[A]) { f: (A) => Unit } : Unit = l match {\n case Nil() => ()\n case Cons(head, tail) => f(head); tail.foreach {f}\n}\n\n// Traverse a list, applying the given action on every element.\n//\n// O(N)\ndef foreach[A](l: List[A]) { f: (A) {Control} => Unit } : Unit = {\n var remainder = l\n loop { {label} =>\n remainder match {\n case Nil() => label.break()\n case Cons(head, tail) =>\n remainder = tail\n f(head) {label}\n }\n }\n}\n\n// Traverse a list, applying the given action on every element and its (zero-based) index.\n//\n// O(N)\ndef foreachIndex[A](list: List[A]){ f: (Int, A) => Unit }: Unit = {\n def loop(index: Int, remainder: List[A]): Unit = remainder match {\n case Nil() => ()\n case Cons(head, tail) =>\n f(index, head);\n loop(index + 1, tail)\n }\n loop(0, list)\n}\n\n// Traverse a list, applying the given action on every element and its (zero-based) index.\n//\n// O(N)\ndef foreachIndex[A](list: List[A]){ f: (Int, A) {Control} => Unit }: Unit = {\n var remainder = list\n var i = -1\n loop { {label} =>\n remainder match {\n case Nil() => label.break()\n case Cons(head, tail) =>\n remainder = tail\n i = i + 1\n f(i, head) {label}\n }\n }\n}\n\n// Map a function `f` over elements in a given list.\n//\n// O(N)\ndef map[A, B](l: List[A]) { f: A => B } : List[B] = {\n var acc = Nil[B]()\n l.foreach { el => acc = Cons(f(el), acc) }\n acc.reverse\n}\n\n// Map a function `f` over elements in a given list,\n// keeping only the elements for which the function returned `Some(...)`,\n// discarding the elements for which the function returned `None()`.\n//\n// O(N)\ndef collect[A, B](l: List[A]) { f : A => Option[B] }: List[B] = {\n var acc = Nil[B]()\n l.foreach { a =>\n val optB = f(a)\n optB match {\n case None() => ();\n case Some(b) => acc = Cons(b, acc);\n }\n }\n acc.reverse\n}\n\n// Map a function `f` over elements in a given list and concatenate the results.\n//\n// O(N)\ndef flatMap[A, B](l: List[A]) { f : A => List[B] }: List[B] = {\n var acc = Nil[B]()\n l.foreach { a =>\n val bs = f(a)\n acc = acc.append(bs)\n }\n acc\n}\n\n// Check if predicate is true for all elements of the given list.\n//\n// O(N)\ndef all[A](list: List[A]) { predicate: A => Bool }: Bool = {\n list match {\n case Cons(x, xs) => predicate(x) && all(xs) { predicate }\n case Nil() => true\n }\n}\n\n// Check if predicate is true for at least one element of the given list.\n//\n// O(N)\ndef any[A](list: List[A]) { predicate: A => Bool }: Bool = {\n list match {\n case Cons(x, xs) => predicate(x) || any(xs) { predicate }\n case Nil() => false\n }\n}\n\n// Sum the elements of the list.\n//\n// O(N)\ndef sum(list: List[Int]): Int = {\n var n = 0;\n list.foreach { x => n = n + x };\n n\n}\n\n// Calculate the size of the list.\n//\n// O(N)\ndef size[A](l: List[A]): Int = {\n var n = 0;\n l.foreach { _ => n = n + 1 };\n n\n}\n\n// Reverse the list.\n//\n// O(N)\ndef reverse[A](l: List[A]): List[A] = {\n var res = Nil[A]()\n l.foreach { el => res = Cons(el, res) }\n res\n}\n\n// Reverse a list `l` and append `other` to it.\n//\n// Example:\n// ```\n// > [1,2,3].reverseOnto([4,5,6])\n// [3,2,1,4,5,6]\n// ```\n//\n// O(|l|)\ndef reverseOnto[A](l: List[A], other: List[A]): List[A] = l match {\n case Nil() => other\n case Cons(a, rest) => rest.reverseOnto(Cons(a, other))\n}\n\n// Concatenate list `l` with list `other`:\n//\n// Example:\n// ```\n// > [1,2,3].append([4,5,6])\n// [1,2,3,4,5,6]\n// ```\n//\n// O(N)\ndef append[A](l: List[A], other: List[A]): List[A] =\n l.reverse.reverseOnto(other)\n\n// Flatten a list of lists into a single list.\n//\n// Examples:\n// ```\n// > [[1, 2, 3], [4, 5], [6]].join()\n// [1, 2, 3, 4, 5, 6]\n//\n// > [[]].join()\n// []\n// ```\n//\n// O(N)\ndef join[A](lists: List[List[A]]): List[A] = {\n var acc: List[A] = Nil()\n lists.foreach { list =>\n acc = acc.append(list)\n }\n acc\n}\n\n// Flatten a list of lists into a single list,\n// putting the `between` list in between each list in the input.\n//\n// Examples:\n// ```\n// > [[100], [200, 300], [400]].join([1, 2, 3])\n// [100, 1, 2, 3, 200, 300, 1, 2, 3, 400]\n//\n// > [[]].join([1, 2, 3])\n// []\n// ```\n//\n// O(N)\ndef join[A](lists: List[List[A]], between: List[A]): List[A] = {\n lists match {\n case Nil() => Nil()\n case Cons(firstList, restOfLists) =>\n firstList.append(\n restOfLists.flatMap { list => between.append(list)}\n )\n }\n}\n\n// Take the first `n` elements of a given list.\n//\n// Examples:\n// ```\n// > [1, 2, 3].take(2)\n// [1, 2]\n//\n// > [1, 2, 3].take(0)\n// []\n//\n// > [1, 2, 3].take(3)\n// [1, 2, 3]\n//\n// > [1, 2, 3].take(5)\n// [1, 2, 3]\n//\n// > [1, 2, 3].take(-1)\n// []\n// ```\n//\n// O(n)\ndef take[A](l: List[A], n: Int): List[A] =\n if (n <= 0) {\n Nil()\n } else l match {\n case Nil() => Nil()\n case Cons(a, rest) => Cons(a, rest.take(n - 1))\n }\n\n// Drop the first `n` elements of a given list.\n//\n// Examples:\n// ```\n// > [1, 2, 3].drop(2)\n// [3]\n//\n// > [1, 2, 3].drop(0)\n// [1, 2, 3]\n//\n// > [1, 2, 3].drop(3)\n// []\n//\n// > [1, 2, 3].drop(5)\n// []\n//\n// > [1, 2, 3].drop(-1)\n// [1, 2, 3]\n// ```\n//\n// O(n)\ndef drop[A](l: List[A], n: Int): List[A] =\n if (n <= 0) {\n l\n } else l match {\n case Nil() => Nil()\n case Cons(a, rest) => rest.drop(n - 1)\n }\n\n// Return a slice of a given list from the starting index (inclusive)\n// to the given end index (exclusive).\n//\n// Examples:\n// ```\n// > [1, 2, 3, 4, 5, 6].slice(1, 4)\n// [2, 3, 4]\n//\n// > [1, 2, 3, 4, 5, 6].slice(1, 2)\n// [2]\n//\n// > [1, 2, 3, 4, 5, 6].slice(1, 1)\n// []\n//\n// > [1, 2, 3, 4, 5, 6].slice(4, 1)\n// []\n//\n// > [1, 2, 3, 4, 5, 6].slice(-100, 100)\n// [1, 2, 3, 4, 5, 6]\n// ```\n//\n// O(N)\ndef slice[A](list: List[A], start: Int, stopExclusive: Int): List[A] = {\n val prefix = list.drop(start)\n val length = stopExclusive - start\n prefix.take(length)\n}\n\n// Split the list at given index.\n//\n// Law: `val (l, r) = list.splitAt(i); l.append(r) === list`\n//\n// O(N)\ndef splitAt[A](list: List[A], index: Int): (List[A], List[A]) = {\n (list.take(index), list.drop(index))\n}\n\n// Update the element at given index in the list using the `update` function.\n// Returns the original list if the index is out of bounds.\n//\n// See: `modifyAt`\n// Examples:\n// ```\n// > [1, 2, 3].updateAt(1) { n => n + 100 }\n// [1, 102, 3]\n//\n// > [1, 2, 3].updateAt(10) { n => n + 100 }\n// [1, 2, 3]\n// ```\n//\n// O(N)\ndef updateAt[A](list: List[A], index: Int) { update: A => A }: List[A] = {\n list.splitAt(index) match {\n case (left, Cons(x, right)) =>\n left.append(Cons(update(x), right))\n case _ => list\n }\n}\n\n// Modify the element at given index in the list using the `update` function.\n// Throws `OutOfBounds` if the index is out of bounds.\n//\n// See: `updateAt`\n// Examples:\n// ```\n// > [1, 2, 3].modifyAt(1) { n => n + 100 }\n// Some([1, 102, 3])\n//\n// > [1, 2, 3].modifyAt(10) { n => n + 100 }\n// None()\n// ```\n//\n// O(N)\ndef modifyAt[A](list: List[A], index: Int) { update: A => A }: List[A] / Exception[OutOfBounds] = {\n list.splitAt(index) match {\n case (left, Cons(x, right)) =>\n left.append(Cons(update(x), right))\n case _ => do raise(OutOfBounds(), "Trying to modify an element outside the bounds of a list")\n }\n}\n\n// Delete the element at given index in the list.\n//\n// Example:\n// ```\n// > [1, 2, 3, 4].deleteAt(1)\n// [1, 3, 4]\n//\n// > [1, 2, 3, 4].deleteAt(-1)\n// [1, 2, 3, 4]\n//\n// > [1, 2, 3, 4].deleteAt(10)\n// [1, 2, 3, 4]\n// ```\n//\n// O(N)\ndef deleteAt[A](list: List[A], index: Int): List[A] = {\n val left = list.slice(0, index)\n val right = list.slice(index + 1, list.size())\n left.append(right)\n}\n\n// Add an element at given index in the list.\n//\n// Examples:\n// ```\n// > [1, 2, 3].insert(-1, 0)\n// [0, 1, 2, 3]\n//\n// > [1, 2, 3].insert(0, 0)\n// [0, 1, 2, 3]\n//\n// > [1, 2, 3].insert(1, 0)\n// [1, 0, 2, 3]\n//\n// > [1, 2, 3].insert(3, 0)\n// [1, 2, 3, 0]\n//\n// > [1, 2, 3].insert(10, 0)\n// [1, 2, 3, 0]\n// ```\n//\n// O(N)\ndef insert[A](list: List[A], index: Int, x: A): List[A] = {\n val (left, right) = list.splitAt(index)\n left.append(Cons(x, right))\n}\n\n// Replace an element at given index in the list.\n// Returns the original list when the index is out of bounds.\n//\n// Examples:\n// ```\n// > [1, 2, 3].replace(0, 42)\n// [42, 2, 3]\n//\n// > [1, 2, 3].replace(-1, 42)\n// [1, 2, 3]\n//\n// > [1, 2, 3].replace(10, 42)\n// [1, 2, 3]\n// ```\n//\n// O(N)\ndef replace[A](list: List[A], index: Int, x: A): List[A] = {\n if (index < 0 || index >= list.size()) {\n list\n } else {\n val left = list.take(index)\n val right = list.drop(index + 1)\n left.append(Cons(x, right))\n }\n}\n\n// Produce a list of pairs from a pair of lists.\n// The length of the result is the minimum of lengths of the two lists.\n//\n// Examples:\n// ```\n// > zip([1, 2, 3], [100, 200, 300])\n// [(1, 100), (2, 200), (3, 300)]\n//\n// > zip([1, 2, 3], Nil[Int]())\n// []\n//\n// > zip(Nil[Int](), [1, 2, 3])\n// []\n//\n// > zip([1, 2, 3], [42])\n// [(1, 42)]\n// ```\n//\n// O(N)\ndef zip[A, B](left: List[A], right: List[B]): List[(A, B)] = {\n def go(acc: List[(A, B)], left: List[A], right: List[B]): List[(A, B)] = {\n (left, right) match {\n case (Cons(a, as), Cons(b, bs)) =>\n val pair = (a, b)\n val newAcc = Cons(pair, acc)\n go(newAcc, as, bs)\n case _ => acc.reverse\n }\n }\n go(Nil(), left, right)\n}\n\n// Combine two lists with the given function.\n// The length of the result is the minimum of lengths of the two lists.\n//\n// Examples:\n// ```\n// > zipWith([1, 2, 3], [100, 200, 300]) { (a, b) => a + b }\n// [101, 202, 303]\n//\n// > zipWith([1, 2, 3], Nil[Int]()) { (a, b) => a + b }\n// []\n//\n// > zipWith(Nil[Int](), [1, 2, 3]) { (a, b) => a + b }\n// []\n//\n// > zipWith([1, 2, 3], [42]) { (a, b) => a + b }\n// [43]\n// ```\n//\n// O(N)\ndef zipWith[A, B, C](left: List[A], right: List[B]) { combine : (A, B) => C }: List[C] = {\n def go(acc: List[C], left: List[A], right: List[B]): List[C] = {\n (left, right) match {\n case (Cons(a, as), Cons(b, bs)) =>\n val result = combine(a, b)\n val newAcc = Cons(result, acc)\n go(newAcc, as, bs)\n case _ => acc.reverse\n }\n }\n go(Nil(), left, right)\n}\n\n// Produce a pair of lists from a list of pairs.\n//\n// Examples:\n// ```\n// > [(1, 100), (2, 200), (3, 300)].unzip()\n// ([1, 2, 3], [100, 200, 300])\n// ```\n//\n// O(N)\ndef unzip[A, B](pairs: List[(A, B)]): (List[A], List[B]) = {\n pairs match {\n case Nil() => (Nil(), Nil())\n case Cons((l, r), rest) =>\n val (left, right) = rest.unzip();\n (Cons(l, left), Cons(r, right))\n }\n}\n\n// Partition a given list into two lists.\n// The left list contains the elements that satsify the predicate,\n// the right list contains the elements that do not.\n//\n// O(N)\ndef partition[A](l: List[A]) { pred: A => Bool }: (List[A], List[A]) = {\n var lefts: List[A] = Nil()\n var rights: List[A] = Nil()\n l.foreach { el =>\n if (pred(el)) {\n lefts = Cons(el, lefts)\n } else {\n rights = Cons(el, rights)\n }\n }\n\n (lefts.reverse, rights.reverse)\n}\n\n// Sort a list using a given comparison function.\n//\n// Note: this implementation is not stacksafe!\n//\n// O(N log N)\ndef sortBy[A](l: List[A]) { compare: (A, A) => Bool }: List[A] =\n l match {\n case Nil() => Nil()\n case Cons(pivot, rest) =>\n val (lt, gt) = rest.partition { el => compare(el, pivot) };\n val leftSorted = sortBy(lt) { (a, b) => compare(a, b) }\n val rightSorted = sortBy(gt) { (a, b) => compare(a, b) }\n leftSorted.append(Cons(pivot, rightSorted))\n }\n\ndef sort(l: List[Int]): List[Int] = l.sortBy { (a, b) => a < b }\ndef sort(l: List[Double]): List[Double] = l.sortBy { (a, b) => a < b }\n\n// Check if a list is sorted according to the given comparison function.\n//\n// O(N)\ndef isSortedBy[A](list: List[A]) { compare: (A, A) => Bool }: Bool = {\n def go(list: List[A]): Bool = {\n list match {\n case Nil() => true\n case Cons(x, Nil()) => true\n case Cons(x, Cons(y, rest)) =>\n val next = Cons(y, rest) // Future work: Replace this by an @-pattern!\n compare(x, y) && go(next)\n }\n }\n go(list)\n}\n\n\n// Show Instances\n// --------------\n\ndef show[A](l: List[A]) { showA: A => String }: String = {\n def go(l: List[A]): String = l match {\n case Nil() => "Nil()"\n case Cons(x, xs) => "Cons(" ++ showA(x) ++ ", " ++ go(xs) ++ ")"\n }\n go(l)\n}\ndef show(l: List[Int]): String = show(l) { e => show(e) }\ndef show(l: List[Double]): String = show(l) { e => show(e) }\ndef show(l: List[Bool]): String = show(l) { e => show(e) }\ndef show(l: List[String]): String = show(l) { e => e }\n\ndef println(l: List[Int]): Unit = println(show(l))\ndef println(l: List[Double]): Unit = println(show(l))\ndef println(l: List[Bool]): Unit = println(show(l))\ndef println(l: List[String]): Unit = println(show(l))\n'),zs("common/io/network.effekt",'module io/network\n\nimport bytes\nimport io\n\nnamespace js {\n extern jsNode !!!MULTILINEMARKER!!!\n const net = require(\'node:net\');\n\n function listen(server, port, host, listener) {\n server.listen(port, host);\n server.on(\'connection\', listener);\n }\n !!!MULTILINEMARKER!!!\n\n extern type JSServer // = net.Server\n extern type JSSocket // = net.Socket\n extern io def server(): JSServer =\n jsNode "net.createServer()"\n extern io def listen(server: JSServer, port: Int, host: String, listener: JSSocket => Unit at {io, async, global}): Unit =\n jsNode "listen(${server}, ${port}, ${host}, (socket) => (${listener})(socket).run())"\n\n extern async def send(socket: JSSocket, data: Bytes): Unit =\n jsNode "$effekt.callcc(callback => ${socket}.write(${data}, callback))"\n\n extern async def receive(socket: JSSocket): Bytes =\n jsNode "$effekt.callcc(callback => ${socket}.once(\'data\', callback))"\n\n extern async def end(socket: JSSocket): Unit =\n jsNode "$effekt.callcc(callback => ${socket}.end(callback))"\n}\n\ninterface Socket {\n def send(message: Bytes): Unit\n def receive(): Bytes\n def end(): Unit\n}\n\ndef server(host: String, port: Int, handler: () => Unit / Socket at {io, async, global}): Unit = {\n val server = js::server();\n js::listen(server, port, host, box { socket =>\n println("New connection")\n spawn(box {\n try handler()\n with Socket {\n def send(message) =\n resume(js::send(socket, message))\n def receive() =\n resume(js::receive(socket))\n def end() =\n resume(js::end(socket))\n }\n })\n })\n}\n\n\nnamespace examples {\n def helloWorldApp(): Unit / Socket = {\n val request = do receive();\n\n println("Received a request: " ++ request.toUTF8)\n\n if (request.toUTF8.startsWith("GET /")) {\n do send(fromUTF8("HTTP/1.1 200 OK\\r\\n\\r\\nHello from Effekt!"))\n } else {\n do send("HTTP/1.1 400 Bad Request\\r\\n\\r\\n".fromUTF8)\n }\n do end()\n }\n\n // A server that just shows "Hello from Effekt!" on localhost:8080\n def main() = {\n val port = 8080\n println("Starting server on http://localhost:" ++ port.show)\n\n server("localhost", port, box {\n helloWorldApp()\n })\n }\n}\n'),zs("common/io/error.effekt",'module io/error\n\n/**\n * Errors defined by libuv that can occur in IO operations.\n *\n * In addition to the named error codes, we also assign each error a\n * (positive) integer value that is stable across the different platforms.\n *\n * For the mapping of IOError and code values, see function fromCode.\n *\n * While stable, this integer value is supposed to only be used internally.\n * All user-facing operations should use values of type IOError, instead.\n *\n * see: https://docs.libuv.org/en/v1.x/errors.html\n */\ntype IOError {\n E2BIG();\n EACCES();\n EADDRINUSE();\n EADDRNOTAVAIL();\n EAFNOSUPPORT();\n EAGAIN();\n EAI_ADDRFAMILY();\n EAI_AGAIN();\n EAI_BADFLAGS();\n EAI_BADHINTS();\n EAI_CANCELED();\n EAI_FAIL();\n EAI_FAMILY();\n EAI_MEMORY();\n EAI_NODATA();\n EAI_NONAME();\n EAI_OVERFLOW();\n EAI_PROTOCOL();\n EAI_SERVICE();\n EAI_SOCKTYPE();\n EALREADY();\n EBADF();\n EBUSY();\n ECANCELED();\n ECHARSET();\n ECONNABORTED();\n ECONNREFUSED();\n ECONNRESET();\n EDESTADDRREQ();\n EEXIST();\n EFAULT();\n EFBIG();\n EHOSTUNREACH();\n EINTR();\n EINVAL();\n EIO();\n EISCONN();\n EISDIR();\n ELOOP();\n EMFILE();\n EMSGSIZE();\n ENAMETOOLONG();\n ENETDOWN();\n ENETUNREACH();\n ENFILE();\n ENOBUFS();\n ENODEV();\n ENOENT();\n ENOMEM();\n ENONET();\n ENOPROTOOPT();\n ENOSPC();\n ENOSYS();\n ENOTCONN();\n ENOTDIR();\n ENOTEMPTY();\n ENOTSOCK();\n ENOTSUP();\n EOVERFLOW();\n EPERM();\n EPIPE();\n EPROTO();\n EPROTONOSUPPORT();\n EPROTOTYPE();\n ERANGE();\n EROFS();\n ESHUTDOWN();\n ESPIPE();\n ESRCH();\n ETIMEDOUT();\n ETXTBSY();\n EXDEV();\n UNKNOWN();\n EOF();\n ENXIO();\n EMLINK();\n ENOTTY();\n EFTYPE();\n EILSEQ();\n ESOCKTNOSUPPORT();\n EUNATCH()\n}\n\n/**\n * Corresponding error message for a libuv error\n *\n * see: https://docs.libuv.org/en/v1.x/errors.html\n */\ndef message(error: IOError): String = error match {\n case E2BIG() => "argument list too long"\n case EACCES() => "permission denied"\n case EADDRINUSE() => "address already in use"\n case EADDRNOTAVAIL() => "address not available"\n case EAFNOSUPPORT() => "address family not supported"\n case EAGAIN() => "resource temporarily unavailable"\n case EAI_ADDRFAMILY() => "address family not supported"\n case EAI_AGAIN() => "temporary failure"\n case EAI_BADFLAGS() => "bad ai_flags value"\n case EAI_BADHINTS() => "invalid value for hints"\n case EAI_CANCELED() => "request canceled"\n case EAI_FAIL() => "permanent failure"\n case EAI_FAMILY() => "ai_family not supported"\n case EAI_MEMORY() => "out of memory"\n case EAI_NODATA() => "no address"\n case EAI_NONAME() => "unknown node or service"\n case EAI_OVERFLOW() => "argument buffer overflow"\n case EAI_PROTOCOL() => "resolved protocol is unknown"\n case EAI_SERVICE() => "service not available for socket type"\n case EAI_SOCKTYPE() => "socket type not supported"\n case EALREADY() => "connection already in progress"\n case EBADF() => "bad file descriptor"\n case EBUSY() => "resource busy or locked"\n case ECANCELED() => "operation canceled"\n case ECHARSET() => "invalid Unicode character"\n case ECONNABORTED() => "software caused connection abort"\n case ECONNREFUSED() => "connection refused"\n case ECONNRESET() => "connection reset by peer"\n case EDESTADDRREQ() => "destination address required"\n case EEXIST() => "file already exists"\n case EFAULT() => "bad address in system call argument"\n case EFBIG() => "file too large"\n case EHOSTUNREACH() => "host is unreachable"\n case EINTR() => "interrupted system call"\n case EINVAL() => "invalid argument"\n case EIO() => "i/o error"\n case EISCONN() => "socket is already connected"\n case EISDIR() => "illegal operation on a directory"\n case ELOOP() => "too many symbolic links encountered"\n case EMFILE() => "too many open files"\n case EMSGSIZE() => "message too long"\n case ENAMETOOLONG() => "name too long"\n case ENETDOWN() => "network is down"\n case ENETUNREACH() => "network is unreachable"\n case ENFILE() => "file table overflow"\n case ENOBUFS() => "no buffer space available"\n case ENODEV() => "no such device"\n case ENOENT() => "no such file or directory"\n case ENOMEM() => "not enough memory"\n case ENONET() => "machine is not on the network"\n case ENOPROTOOPT() => "protocol not available"\n case ENOSPC() => "no space left on device"\n case ENOSYS() => "function not implemented"\n case ENOTCONN() => "socket is not connected"\n case ENOTDIR() => "not a directory"\n case ENOTEMPTY() => "directory not empty"\n case ENOTSOCK() => "socket operation on non-socket"\n case ENOTSUP() => "operation not supported on socket"\n case EOVERFLOW() => "value too large for defined data type"\n case EPERM() => "operation not permitted"\n case EPIPE() => "broken pipe"\n case EPROTO() => "protocol error"\n case EPROTONOSUPPORT() => "protocol not supported"\n case EPROTOTYPE() => "protocol wrong type for socket"\n case ERANGE() => "result too large"\n case EROFS() => "read-only file system"\n case ESHUTDOWN() => "cannot send after transport endpoint shutdown"\n case ESPIPE() => "invalid seek"\n case ESRCH() => "no such process"\n case ETIMEDOUT() => "connection timed out"\n case ETXTBSY() => "text file is busy"\n case EXDEV() => "cross-device link not permitted"\n case UNKNOWN() => "unknown error"\n case EOF() => "end of file"\n case ENXIO() => "no such device or address"\n case EMLINK() => "too many links"\n case ENOTTY() => "inappropriate ioctl for device"\n case EFTYPE() => "inappropriate file type or format"\n case EILSEQ() => "illegal byte sequence"\n case ESOCKTNOSUPPORT() => "socket type not supported"\n case EUNATCH() => "protocol driver not attached"\n}\n\n/**\n * Corresponding name of a libuv error\n *\n * see: https://docs.libuv.org/en/v1.x/errors.html\n */\ndef name(error: IOError): String = error match {\n case E2BIG() => "E2BIG"\n case EACCES() => "EACCES"\n case EADDRINUSE() => "EADDRINUSE"\n case EADDRNOTAVAIL() => "EADDRNOTAVAIL"\n case EAFNOSUPPORT() => "EAFNOSUPPORT"\n case EAGAIN() => "EAGAIN"\n case EAI_ADDRFAMILY() => "EAI_ADDRFAMILY"\n case EAI_AGAIN() => "EAI_AGAIN"\n case EAI_BADFLAGS() => "EAI_BADFLAGS"\n case EAI_BADHINTS() => "EAI_BADHINTS"\n case EAI_CANCELED() => "EAI_CANCELED"\n case EAI_FAIL() => "EAI_FAIL"\n case EAI_FAMILY() => "EAI_FAMILY"\n case EAI_MEMORY() => "EAI_MEMORY"\n case EAI_NODATA() => "EAI_NODATA"\n case EAI_NONAME() => "EAI_NONAME"\n case EAI_OVERFLOW() => "EAI_OVERFLOW"\n case EAI_PROTOCOL() => "EAI_PROTOCOL"\n case EAI_SERVICE() => "EAI_SERVICE"\n case EAI_SOCKTYPE() => "EAI_SOCKTYPE"\n case EALREADY() => "EALREADY"\n case EBADF() => "EBADF"\n case EBUSY() => "EBUSY"\n case ECANCELED() => "ECANCELED"\n case ECHARSET() => "ECHARSET"\n case ECONNABORTED() => "ECONNABORTED"\n case ECONNREFUSED() => "ECONNREFUSED"\n case ECONNRESET() => "ECONNRESET"\n case EDESTADDRREQ() => "EDESTADDRREQ"\n case EEXIST() => "EEXIST"\n case EFAULT() => "EFAULT"\n case EFBIG() => "EFBIG"\n case EHOSTUNREACH() => "EHOSTUNREACH"\n case EINTR() => "EINTR"\n case EINVAL() => "EINVAL"\n case EIO() => "EIO"\n case EISCONN() => "EISCONN"\n case EISDIR() => "EISDIR"\n case ELOOP() => "ELOOP"\n case EMFILE() => "EMFILE"\n case EMSGSIZE() => "EMSGSIZE"\n case ENAMETOOLONG() => "ENAMETOOLONG"\n case ENETDOWN() => "ENETDOWN"\n case ENETUNREACH() => "ENETUNREACH"\n case ENFILE() => "ENFILE"\n case ENOBUFS() => "ENOBUFS"\n case ENODEV() => "ENODEV"\n case ENOENT() => "ENOENT"\n case ENOMEM() => "ENOMEM"\n case ENONET() => "ENONET"\n case ENOPROTOOPT() => "ENOPROTOOPT"\n case ENOSPC() => "ENOSPC"\n case ENOSYS() => "ENOSYS"\n case ENOTCONN() => "ENOTCONN"\n case ENOTDIR() => "ENOTDIR"\n case ENOTEMPTY() => "ENOTEMPTY"\n case ENOTSOCK() => "ENOTSOCK"\n case ENOTSUP() => "ENOTSUP"\n case EOVERFLOW() => "EOVERFLOW"\n case EPERM() => "EPERM"\n case EPIPE() => "EPIPE"\n case EPROTO() => "EPROTO"\n case EPROTONOSUPPORT() => "EPROTONOSUPPORT"\n case EPROTOTYPE() => "EPROTOTYPE"\n case ERANGE() => "ERANGE"\n case EROFS() => "EROFS"\n case ESHUTDOWN() => "ESHUTDOWN"\n case ESPIPE() => "ESPIPE"\n case ESRCH() => "ESRCH"\n case ETIMEDOUT() => "ETIMEDOUT"\n case ETXTBSY() => "ETXTBSY"\n case EXDEV() => "EXDEV"\n case UNKNOWN() => "UNKNOWN"\n case EOF() => "EOF"\n case ENXIO() => "ENXIO"\n case EMLINK() => "EMLINK"\n case ENOTTY() => "ENOTTY"\n case EFTYPE() => "EFTYPE"\n case EILSEQ() => "EILSEQ"\n case ESOCKTNOSUPPORT() => "ESOCKTNOSUPPORT"\n case EUNATCH() => "EUNATCH"\n}\n\n/**\n * Translates a integer code value to an IOError.\n *\n * See documentation of type IOError for further information.\n */\ndef fromNumber(number: Int): IOError = number match {\n case 1 => EPERM()\n case 2 => ENOENT()\n case 3 => ESRCH()\n case 4 => EINTR()\n case 5 => EIO()\n case 6 => ENXIO()\n case 7 => E2BIG()\n case 9 => EBADF()\n case 11 => EAGAIN()\n case 12 => ENOMEM()\n case 13 => EACCES()\n case 14 => EFAULT()\n case 16 => EBUSY()\n case 17 => EEXIST()\n case 18 => EXDEV()\n case 19 => ENODEV()\n case 20 => ENOTDIR()\n case 21 => EISDIR()\n case 22 => EINVAL()\n case 23 => ENFILE()\n case 24 => EMFILE()\n case 25 => ENOTTY()\n case 26 => ETXTBSY()\n case 27 => EFBIG()\n case 28 => ENOSPC()\n case 29 => ESPIPE()\n case 30 => EROFS()\n case 31 => EMLINK()\n case 32 => EPIPE()\n case 34 => ERANGE()\n case 36 => ENAMETOOLONG()\n case 40 => ELOOP()\n case 75 => EOVERFLOW()\n case 79 => EFTYPE()\n case 84 => EILSEQ()\n case 88 => ENOTSOCK()\n case 89 => EDESTADDRREQ()\n case 90 => EMSGSIZE()\n case 91 => EPROTOTYPE()\n case 92 => ENOPROTOOPT()\n case 93 => EPROTONOSUPPORT()\n case 94 => ESOCKTNOSUPPORT()\n case 95 => ENOTSUP()\n case 97 => EAFNOSUPPORT()\n case 98 => EADDRINUSE()\n case 99 => EADDRNOTAVAIL()\n case 100 => ENETDOWN()\n case 101 => ENETUNREACH()\n case 103 => ECONNABORTED()\n case 104 => ECONNRESET()\n case 105 => ENOBUFS()\n case 106 => EISCONN()\n case 107 => ENOTCONN()\n case 110 => ETIMEDOUT()\n case 111 => ECONNREFUSED()\n case 113 => EHOSTUNREACH()\n case 114 => EALREADY()\n case 125 => ECANCELED()\n\n case 200 => EAI_ADDRFAMILY()\n case 201 => EAI_AGAIN()\n case 202 => EAI_BADFLAGS()\n case 203 => EAI_BADHINTS()\n case 204 => EAI_CANCELED()\n case 205 => EAI_FAIL()\n case 206 => EAI_FAMILY()\n case 207 => EAI_MEMORY()\n case 208 => EAI_NODATA()\n case 209 => EAI_NONAME()\n case 210 => EAI_OVERFLOW()\n case 211 => EAI_PROTOCOL()\n case 212 => EAI_SERVICE()\n case 213 => EAI_SOCKTYPE()\n case 215 => ECHARSET()\n case 216 => ENONET()\n case 217 => UNKNOWN()\n case 218 => EOF()\n case 219 => EUNATCH()\n case 220 => ESHUTDOWN()\n\n case _ => panic("Not a valid error code: " ++ show(number))\n}\n\nnamespace internal {\n\n extern llvm !!!MULTILINEMARKER!!!\n declare %Int @c_error_number(%Int)\n !!!MULTILINEMARKER!!!\n\n extern jsNode !!!MULTILINEMARKER!!!\n const os = require(\'node:os\');\n\n /**\n * Maps the error code to a Effekt-stable (platform independent) numeric value.\n *\n * Tries to use most common errno integer values, but introduces fresh values (> 200)\n * for those without common errno values.\n */\n function errorNumber(errno) {\n const errnoMap = {\n [os.constants.errno.EPERM]: 1,\n [os.constants.errno.ENOENT]: 2,\n [os.constants.errno.ESRCH]: 3,\n [os.constants.errno.EINTR]: 4,\n [os.constants.errno.EIO]: 5,\n [os.constants.errno.ENXIO]: 6,\n [os.constants.errno.E2BIG]: 7,\n [os.constants.errno.EBADF]: 9,\n [os.constants.errno.EAGAIN]: 11,\n [os.constants.errno.ENOMEM]: 12,\n [os.constants.errno.EACCES]: 13,\n [os.constants.errno.EFAULT]: 14,\n [os.constants.errno.EBUSY]: 16,\n [os.constants.errno.EEXIST]: 17,\n [os.constants.errno.EXDEV]: 18,\n [os.constants.errno.ENODEV]: 19,\n [os.constants.errno.ENOTDIR]: 20,\n [os.constants.errno.EISDIR]: 21,\n [os.constants.errno.EINVAL]: 22,\n [os.constants.errno.ENFILE]: 23,\n [os.constants.errno.EMFILE]: 24,\n [os.constants.errno.ENOTTY]: 25,\n [os.constants.errno.ETXTBSY]: 26,\n [os.constants.errno.EFBIG]: 27,\n [os.constants.errno.ENOSPC]: 28,\n [os.constants.errno.ESPIPE]: 29,\n [os.constants.errno.EROFS]: 30,\n [os.constants.errno.EMLINK]: 31,\n [os.constants.errno.EPIPE]: 32,\n [os.constants.errno.ERANGE]: 34,\n [os.constants.errno.ENAMETOOLONG]: 36,\n [os.constants.errno.ELOOP]: 40,\n [os.constants.errno.EOVERFLOW]: 75,\n [os.constants.errno.EFTYPE]: 79,\n [os.constants.errno.EILSEQ]: 84,\n [os.constants.errno.ENOTSOCK]: 88,\n [os.constants.errno.EDESTADDRREQ]: 89,\n [os.constants.errno.EMSGSIZE]: 90,\n [os.constants.errno.EPROTOTYPE]: 91,\n [os.constants.errno.ENOPROTOOPT]: 92,\n [os.constants.errno.EPROTONOSUPPORT]: 93,\n [os.constants.errno.ESOCKTNOSUPPORT]: 94,\n [os.constants.errno.ENOTSUP]: 95,\n [os.constants.errno.EAFNOSUPPORT]: 97,\n [os.constants.errno.EADDRINUSE]: 98,\n [os.constants.errno.EADDRNOTAVAIL]: 99,\n [os.constants.errno.ENETDOWN]: 100,\n [os.constants.errno.ENETUNREACH]: 101,\n [os.constants.errno.ECONNABORTED]: 103,\n [os.constants.errno.ECONNRESET]: 104,\n [os.constants.errno.ENOBUFS]: 105,\n [os.constants.errno.EISCONN]: 106,\n [os.constants.errno.ENOTCONN]: 107,\n [os.constants.errno.ETIMEDOUT]: 110,\n [os.constants.errno.ECONNREFUSED]: 111,\n [os.constants.errno.EHOSTUNREACH]: 113,\n [os.constants.errno.EALREADY]: 114,\n [os.constants.errno.ECANCELED]: 125,\n [os.constants.errno.EAI_ADDRFAMILY]: 200,\n [os.constants.errno.EAI_AGAIN]: 201,\n [os.constants.errno.EAI_BADFLAGS]: 202,\n [os.constants.errno.EAI_BADHINTS]: 203,\n [os.constants.errno.EAI_CANCELED]: 204,\n [os.constants.errno.EAI_FAIL]: 205,\n [os.constants.errno.EAI_FAMILY]: 206,\n [os.constants.errno.EAI_MEMORY]: 207,\n [os.constants.errno.EAI_NODATA]: 208,\n [os.constants.errno.EAI_NONAME]: 209,\n [os.constants.errno.EAI_OVERFLOW]: 210,\n [os.constants.errno.EAI_PROTOCOL]: 211,\n [os.constants.errno.EAI_SERVICE]: 212,\n [os.constants.errno.EAI_SOCKTYPE]: 213,\n [os.constants.errno.ECHARSET]: 215,\n [os.constants.errno.ENONET]: 216,\n [os.constants.errno.UNKNOWN]: 217,\n [os.constants.errno.EOF]: 218,\n [os.constants.errno.EUNATCH]: 219,\n [os.constants.errno.ESHUTDOWN]: 220\n };\n return errnoMap[-errno] || -1; // Default to -1 for unknown error names\n }\n !!!MULTILINEMARKER!!!\n\n extern pure def errorNumber(errno: Int): Int =\n jsNode "errorNumber(${errno})"\n llvm !!!MULTILINEMARKER!!!\n %z = call %Int @c_error_number(%Int ${errno})\n ret %Int %z\n !!!MULTILINEMARKER!!!\n\n}\n'),zs("common/io/filesystem.effekt","module io/filesystem\n\nimport bytes\n\nimport io\nimport io/error\n\n\n/**\n * Represents the file opening modes with their respective flags\n * Backends rely on the order of these\n */\ntype Mode {\n // Most common modes\n ReadOnly() // 'r' exception if does not exist\n WriteOnly() // 'w' created if does not exist, truncated if exists\n AppendOnly() // 'a' created if does not exist\n\n // Other modes\n ReadWrite() // 'w+' created if does not exist, truncated if exists\n ReadAppend() // 'a+' created if does not exist\n AppendExclusive() // 'ax' created if does not exist, fails if exists\n ReadAppendExclusive() // 'ax+' created if does not exist, fails if exists\n AppendSync() // 'as' created if does not exist, append in synchronous mode\n ReadAppendSync() // 'as+' created if does not exist, append in synchronous mode\n ReadSync() // 'rs' exception if does not exist, read in synchronous mode\n ReadWriteSync() // 'rs+' exception if does not exist, read/write in synchronous mode\n WriteExclusive() // 'wx' created if does not exist, truncated if exists, fails if exists\n ReadWriteExclusive() // 'wx+' created if does not exist, truncated if exists, fails if exists\n}\n\n\n/**\n * A file descriptor. Should not be inspected.\n */\ntype File = Int\n\n\n/**\n * Reads a file at given path as utf8 encoded string.\n */\ndef readFile(path: String): String / Exception[IOError] = {\n val fd = open(path, ReadOnly());\n with on[IOError].finalize { close(fd) }\n\n val readSize = 1048576 // 1MB\n var size = readSize\n var buffer = bytes(size)\n var offset = 0;\n\n def go(): String = {\n read(fd, buffer.slice(offset, min(readSize, size - offset)), -1) match {\n case 0 =>\n buffer.slice(0, offset).toUTF8\n case n and n < 0 => panic(\"Error!\")\n case n =>\n offset = offset + n\n\n // we are at maximum capacity\n if (n == readSize && (offset + readSize) > size) {\n val newSize = size * 2\n val newBuffer = bytes(newSize)\n copy(buffer, newBuffer, 0, 0, size)\n buffer = newBuffer\n size = newSize\n }\n go()\n }\n }\n\n go()\n}\n\n/**\n * Writes the (utf8 encoded) string `contents` into the specified file.\n */\ndef writeFile(path: String, contents: String): Unit / Exception[IOError] = {\n val fd = open(path, WriteOnly());\n with on[IOError].finalize { close(fd) }\n\n val writeSize = 1048576 // 1MB\n\n // this induces a memcpy that is not strictly necessary, since we use the buffer read-only\n val buffer = contents.fromUTF8\n val size = buffer.size\n\n var offset = 0;\n def remaining() = size - offset\n\n def go(): Unit =\n write(fd, buffer.slice(offset, min(writeSize, remaining())), -1) match {\n case 0 => ()\n case n and n < 0 => panic(\"Error!\")\n case n =>\n offset = offset + n;\n if (remaining() > 0) go()\n }\n\n go()\n}\n\n\n/**\n * An abstract interface applications can program against.\n *\n * Can be interpreted with the `filesystem` handler, or virtualized etc.\n *\n * See example below.\n */\ninterface Files {\n def readFile(path: String): String\n def writeFile(path: String, contents: String): Unit\n}\n\n/**\n * Using the file system via node.js\n */\ndef filesystem[R] { program: => R / Files }: R / Exception[IOError] = // TODO move Exception to be bidirectional\n try { program() }\n with Files {\n def readFile(path) = resume(readFile(path))\n def writeFile(path, contents) = resume(writeFile(path, contents))\n }\n\n\ndef open(path: String, mode: Mode): File / Exception[IOError] =\n internal::checkResult(internal::open(path, mode))\n\ndef read(fd: File, buffer: Bytes, offset: Int): Int / Exception[IOError] =\n internal::checkResult(internal::read(fd, buffer, offset))\n\ndef write(fd: File, buffer: Bytes, offset: Int): Int / Exception[IOError] =\n internal::checkResult(internal::write(fd, buffer, offset))\n\ndef close(fd: File): Unit / Exception[IOError] = {\n internal::checkResult(internal::close(fd)); ()\n}\n\nnamespace internal {\n\n extern js !!!MULTILINEMARKER!!!\n function modeName(mode) {\n switch (mode.__tag) {\n case 0: // ReadOnly()\n return 'r';\n case 1: // WriteOnly()\n return 'w';\n case 2: // AppendOnly()\n return 'a';\n case 3: // ReadWrite()\n return 'w+';\n case 4: // ReadAppend()\n return 'a+';\n case 5: // AppendExclusive()\n return 'ax';\n case 6: // ReadAppendExclusive()\n return 'ax+';\n case 7: // AppendSync()\n return 'as';\n case 8: // ReadAppendSync()\n return 'as+';\n case 9: // ReadSync()\n return 'rs';\n case 10: // ReadWriteSync()\n return 'rs+';\n case 11: // WriteExclusive()\n return 'wx';\n case 12: // ReadWriteExclusive()\n return 'wx+';\n default:\n // Invalid tag value\n return null;\n }\n }\n\n /**\n * Nodejs file operations expect buffers, but we represent buffers as typed arrays.\n * This function converts between the two without copying.\n */\n function toBuffer(buffer) {\n return Buffer.from(buffer.buffer, buffer.byteOffset, buffer.byteLength)\n }\n !!!MULTILINEMARKER!!!\n\n extern jsNode !!!MULTILINEMARKER!!!\n const fs = require(\"fs\");\n\n function open(path, mode, callback) {\n fs.open(path, modeName(mode), (err, fd) => {\n if (err) { callback(err.errno) } else { callback(fd) }\n })\n }\n\n function read(fd, buffer, offset, callback) {\n let position = offset === -1 ? null : offset;\n fs.read(fd, toBuffer(buffer), 0, buffer.length, position, (err, bytesRead) => {\n if (err) { callback(err.errno) } else { callback(bytesRead) }\n })\n }\n\n function write(fd, buffer, offset, callback) {\n let position = offset === -1 ? null : offset;\n fs.write(fd, toBuffer(buffer), 0, buffer.length, position, (err, bytesWritten) => {\n if (err) { callback(err.errno) } else { callback(bytesWritten) }\n })\n }\n\n function close(fd, callback) {\n fs.close(fd, (err) => {\n if (err) { callback(err.errno) } else { callback(0) }\n })\n }\n !!!MULTILINEMARKER!!!\n\n extern llvm !!!MULTILINEMARKER!!!\n declare void @c_fs_open(%Pos, %Pos, %Stack)\n declare void @c_fs_read(%Int, %Pos, %Int, %Stack)\n declare void @c_fs_write(%Int, %Pos, %Int, %Stack)\n declare void @c_fs_close(%Int, %Stack)\n !!!MULTILINEMARKER!!!\n\n extern async def open(path: String, mode: Mode): Int =\n jsNode \"$effekt.callcc(callback => open(${path}, ${mode}, callback))\"\n llvm !!!MULTILINEMARKER!!!\n call void @c_fs_open(%Pos ${path}, %Pos ${mode}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\n extern async def read(fd: Int, buffer: Bytes, offset: Int): Int =\n jsNode \"$effekt.callcc(callback => read(${fd}, ${buffer}, ${offset}, callback))\"\n llvm !!!MULTILINEMARKER!!!\n call void @c_fs_read(%Int ${fd}, %Pos ${buffer}, %Int ${offset}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\n extern async def write(fd: Int, buffer: Bytes, offset: Int): Int =\n jsNode \"$effekt.callcc(callback => write(${fd}, ${buffer}, ${offset}, callback))\"\n llvm !!!MULTILINEMARKER!!!\n call void @c_fs_write(%Int ${fd}, %Pos ${buffer}, %Int ${offset}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\n extern async def close(fd: Int): Int =\n jsNode \"$effekt.callcc(callback => close(${fd}, callback))\"\n llvm !!!MULTILINEMARKER!!!\n call void @c_fs_close(%Int ${fd}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\n def checkResult(result: Int): Int / Exception[IOError] =\n if (result < 0) {\n val ioError = fromNumber(internal::errorNumber(result));\n do raise[IOError](ioError, message(ioError))\n } else {\n result\n }\n}\n\nnamespace examples {\n\n // Example illustrating using abstract files interface\n // and interpreting it into asynchronous IO\n def copy(from: String, to: String): Unit / Files = {\n val contents = do readFile(from)\n do writeFile(to, contents)\n }\n\n def main() = {\n with on[IOError].panic;\n with filesystem;\n\n copy(\"README.md\", \"out/test.md\")\n }\n}\n"),zs("common/io/console.effekt",'module io/console\n\nimport io\n\ninterface Console {\n def readLine(): String\n def writeLine(content: String): Unit\n}\n\n/**\n * Handler for the console effect, using the Console available in js\n */\ndef console[R] { program: () => R / Console }: R = {\n val c = js::newConsole()\n try {\n val r = program()\n js::close(c)\n return r\n } with Console {\n def readLine() = resume(js::readLine(c))\n def writeLine(message) = resume(js::writeLine(c, message))\n }\n}\n\nnamespace js {\n\n extern jsNode !!!MULTILINEMARKER!!!\n const readline = require(\'node:readline\');\n !!!MULTILINEMARKER!!!\n\n extern type JSConsole\n\n extern io def newConsole(): JSConsole =\n jsNode !!!MULTILINEMARKER!!!readline.createInterface({\n input: process.stdin,\n output: process.stdout,\n })!!!MULTILINEMARKER!!!\n\n extern io def close(console: JSConsole): Unit =\n jsNode "${console}.close()"\n\n extern async def readLine(console: JSConsole): String =\n jsNode "$effekt.callcc(callback => ${console}.once(\'line\', callback))"\n\n extern io def writeLine(console: JSConsole, message: String): Unit =\n jsNode "${console}.output.write(${message} + \'\\\\n\')"\n}\n\nnamespace examples {\n\n def greeter() = {\n do writeLine("What\'s your name?")\n val name = do readLine();\n do writeLine("Hi " ++ name ++ ", nice to meet you!")\n }\n\n def main() = {\n with console;\n greeter()\n }\n\n}\n'),zs("common/io/time.effekt",'module io/time\n\nextern llvm !!!MULTILINEMARKER!!!\n declare void @c_timer_start(%Int, %Stack)\n!!!MULTILINEMARKER!!!\n\nextern async def wait(millis: Int): Unit =\n js "$effekt.callcc(callback => setTimeout(() => callback($effekt.unit), ${millis}))"\n llvm !!!MULTILINEMARKER!!!\n call void @c_timer_start(%Int ${millis}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n'),zs("common/dequeue.effekt",'module dequeue\n\n\n// An implementation of a functional dequeue, using Okasaki\'s\n// bankers dequeue implementation.\n//\n// Translation from the Haskell implementation:\n// https://hackage.haskell.org/package/dequeue-0.1.12/docs/src/Data-Dequeue.html#Dequeue\nrecord Dequeue[R](front: List[R], frontSize: Int, rear: List[R], rearSize: Int)\n\ndef emptyQueue[R](): Dequeue[R] = Dequeue(Nil(), 0, Nil(), 0)\n\ndef isEmpty[R](dq: Dequeue[R]): Bool = dq match {\n case Dequeue(f, fs, r, rs) => (fs == 0) && (rs == 0)\n}\n\ndef size[R](dq: Dequeue[R]): Int = dq match {\n case Dequeue(f, fs, r, rs) => fs + rs\n}\n\ndef first[R](dq: Dequeue[R]): Option[R] = dq match {\n case Dequeue(f, fs, r, rs) =>\n if ((fs == 0) && (rs == 1)) { r.headOption }\n else { f.headOption }\n}\n\ndef last[R](dq: Dequeue[R]): Option[R] = dq match {\n case Dequeue(f, fs, r, rs) =>\n if ((fs == 1) && (rs == 0)) { f.headOption }\n else { r.headOption }\n}\n\ndef check[R](dq: Dequeue[R]): Dequeue[R] = dq match {\n case Dequeue(f, fs, r, rs) =>\n val c = 4;\n val size1 = (fs + rs) / 2;\n val size2 = (fs + rs) - size1;\n\n if (fs > c * rs + 1) {\n val front = f.take(size1);\n val rear = r.append(f.drop(size1).reverse);\n Dequeue(front, size1, rear, size2)\n } else if (rs > c * fs + 1) {\n val front = f.append(r.drop(size1).reverse);\n val rear = r.take(size1);\n Dequeue(front, size2, rear, size1)\n } else {\n dq\n }\n}\n\ndef pushFront[R](dq: Dequeue[R], el: R): Dequeue[R] = dq match {\n case Dequeue(f, fs, r, rs) => Dequeue(Cons(el, f), fs + 1, r, rs).check\n}\n\ndef popFront[R](dq: Dequeue[R]): Option[(R, Dequeue[R])] = dq match {\n case Dequeue(Nil(), fs, Cons(x, Nil()), rs) =>\n Some((x, emptyQueue()))\n case Dequeue(Nil(), fs, r, rs) =>\n None()\n case Dequeue(Cons(x, rest), fs, r, rs) =>\n Some((x, Dequeue(rest, fs - 1, r, rs).check))\n}\n\ndef pushBack[R](dq: Dequeue[R], el: R): Dequeue[R] = dq match {\n case Dequeue(f, fs, r, rs) => Dequeue(f, fs, Cons(el, r), rs + 1).check\n}\n\ndef popBack[R](dq: Dequeue[R]): Option[(R, Dequeue[R])] = dq match {\n case Dequeue(Cons(x, Nil()), fs, Nil(), rs) =>\n Some((x, emptyQueue()))\n case Dequeue(f, fs, Nil(), rs) =>\n None()\n case Dequeue(f, fs, Cons(x, rest), rs) =>\n Some((x, Dequeue(f, fs, rest, rs - 1).check))\n}\n\n\ndef show[A](d: Dequeue[A]) { showA: A => String }: String = {\n val Dequeue(front, frontSize, rear, rearSize) = d;\n "Dequeue(" ++ show(front){showA} ++ ", " ++ show(frontSize) ++ ", " ++\n show(rear){showA} ++ ", " ++ show(rearSize) ++ ")"\n}\ndef show(l: Dequeue[Int]): String = show(l) { e => show(e) }\ndef show(l: Dequeue[Double]): String = show(l) { e => show(e) }\ndef show(l: Dequeue[Bool]): String = show(l) { e => show(e) }\ndef show(l: Dequeue[String]): String = show(l) { e => e }\n\ndef println(l: Dequeue[Int]): Unit = println(show(l))\ndef println(l: Dequeue[Double]): Unit = println(show(l))\ndef println(l: Dequeue[Bool]): Unit = println(show(l))\ndef println(l: Dequeue[String]): Unit = println(show(l))\n'),zs("common/exception.effekt",'module exception\n\nimport effekt\n\n// Exceptions\n// ==========\n\ninterface Exception[E] {\n def raise(exception: E, msg: String): Nothing\n}\n\ndef raise[A, E](exception: E, msg: String): A / Exception[E] =\n do raise(exception, msg) match {}\n\n/**\n * Used as a type for `Exception` in functions which expect a non-empty\n * container (e.g. option or list).\n */\nrecord MissingValue()\n\ndef missingValue(): Nothing / Exception[MissingValue] =\n do raise(MissingValue(), "Missing value.")\n\n/**\n * Used as a type for `Exception` in functions where an index can be out of bounds.\n */\nrecord OutOfBounds()\n\n/**\n * Unexpected runtime exceptions that can be caught.\n */\nrecord RuntimeError()\n\ndef raise[A](msg: String): A / Exception[RuntimeError] =\n do raise(RuntimeError(), msg) match {}\n\n/**\n * Used as a type for `Exception` in functions which expect the input\n * to be formatted in a specific way.\n */\nrecord WrongFormat()\n\ndef wrongFormat(): Nothing / Exception[WrongFormat] =\n do raise(WrongFormat(), "Wrong format.")\n\ndef wrongFormat(msg: String): Nothing / Exception[WrongFormat] =\n do raise(WrongFormat(), msg)\n\n\n/**\n * A fatal runtime error that cannot be caught\n */\nextern io def panic[R](msg: String): R =\n js "(function() { throw ${msg} })()"\n chez "(raise ${msg})"\n ml "raise Fail ${msg}"\n llvm !!!MULTILINEMARKER!!!\n call void @c_io_println_String(%Pos ${msg})\n call void @exit(i32 1)\n ret %Pos zeroinitializer ; Unit\n !!!MULTILINEMARKER!!!\n\n\n// Exception Handlers\n// ==================\n\n\n/**\n * Converts exceptions of (static) type E to an uncatchable panic that aborts the program\n */\ndef panicOn[E, T] { prog: => T / Exception[E] }: T =\n try { prog() } with Exception[E] { def raise(exception: E, msg: String) = panic(msg) }\n\n/**\n * Reports exceptions of (static) type E to the console\n */\ndef report[E] { prog: => Unit / Exception[E] }: Unit =\n try { prog() } with Exception[E] { def raise(exception: E, msg: String) = println(msg) }\n\n/**\n * Ignores exceptions of (static) type E\n */\ndef ignore[E] { prog: => Unit / Exception[E] }: Unit =\n try { prog() } with Exception[E] { def raise(exception: E, msg: String) = () }\n\n/**\n * Use the default value to handle the exception of type E\n */\ndef default[E, T] { default: => T } { prog: => T / Exception[E] }: T =\n try { prog() } with Exception[E] { def raise(exception: E, msg: String) = default() }\n\n/**\n * Runs the finalizer and rethrows E\n */\ndef finalize[E, T] { finalizer: => Unit } { prog: => T / Exception[E] }: T / Exception[E] =\n try { val res = prog(); finalizer(); res } with Exception[E] {\n def raise(exception: E, msg: String) = { finalizer(); do raise(exception, msg) }\n }\n\n/**\n * A proxy value to enable partial type applications, such as:\n *\n * ```\n * with on[MissingValue].ignore; ...\n * ```\n */\nrecord on[E]()\n\ndef ignore[E](proxy: on[E]) { prog: => Unit / Exception[E] }: Unit =\n ignore[E] {prog}\n\ndef default[E, T](proxy: on[E]) { d: => T } { prog: => T / Exception[E] }: T =\n default[E, T] {d} {prog}\n\ndef panic[E, T](proxy: on[E]) { prog: => T / Exception[E] }: T =\n panicOn[E, T] {prog}\n\ndef report[E](proxy: on[E]) { prog: => Unit / Exception[E] }: Unit =\n report[E] {prog}\n\ndef finalize[E, T](proxy: on[E]) { finalizer: => Unit } { prog: => T / Exception[E] }: T / Exception[E] =\n finalize[E, T] {finalizer} {prog}'),zs("common/result.effekt",'module result\n\nimport effekt\nimport option\nimport exception\n\n/**\n * Represents the result of a potentially failing computation.\n * It is the "reification" of the Exception[E] effect.\n */\ntype Result[A, E] {\n Error(exception: E, msg: String);\n Success(a: A)\n}\n\n/**\n * Represent ("reify") the result of a potentially failing computation.\n */\ndef result[A, E] { f: => A / Exception[E] }: Result[A, E] = try {\n Success(f())\n} with Exception[E] {\n def raise(exc, msg) = Error(exc, msg)\n}\ndef result[A, E](proxy: on[E]) { f: => A / Exception[E] }: Result[A, E] = try {\n Success(f())\n} with Exception[E] {\n def raise(exc, msg) = Error(exc, msg)\n}\n\n/**\n * Extracts the value of a result, if available\n * Monadic "reflection"\n */\ndef value[A, E](r: Result[A, E]): A / Exception[E] = r match {\n case Success(a) => a\n case Error(exc, msg) => do raise(exc, msg)\n}\n\n/**\n * Converts a result to an option forgetting the error details\n */\ndef toOption[A, E](r: Result[A, E]): Option[A] = r match {\n case Success(a) => Some(a)\n case Error(exc, msg) => None()\n}\n'),zs("common/io.effekt",'module io\n\nimport ref\nimport queue\n\n// Event Loop\n// ----------\n\ntype Task[T] = () => T at {io, async, global}\n\nextern llvm !!!MULTILINEMARKER!!!\n declare void @c_yield(%Stack)\n!!!MULTILINEMARKER!!!\n\nextern async def spawn(task: Task[Unit]): Unit =\n js "$effekt.callcc(callback => { setTimeout(() => callback($effekt.unit), 0); ${task}().run()})"\n llvm !!!MULTILINEMARKER!!!\n call void @c_yield(%Stack %stack)\n call void @run(%Neg ${task})\n ret void\n !!!MULTILINEMARKER!!!\n\nextern async def yield(): Unit =\n js "$effekt.callcc(callback => setTimeout(() => callback($effekt.unit), 0))"\n llvm !!!MULTILINEMARKER!!!\n call void @c_yield(%Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\nextern async def abort(): Nothing =\n js "$effekt.callcc(callback => { return })"\n llvm !!!MULTILINEMARKER!!!\n call void @eraseStack(%Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\n\n// Promises\n// --------\n\nextern type Promise[T]\n // = js "{resolve: ƒ, promise: Promise}"\n // = llvm "{tag: 0, obj: Promise*}"\n\ndef promise[T](task: Task[T]): Promise[T] = {\n val p = promise::make[T]();\n spawn(box { p.resolve(task()) });\n return p\n}\n\nextern llvm !!!MULTILINEMARKER!!!\n declare %Pos @c_promise_make()\n declare void @c_promise_resolve(%Pos, %Pos)\n declare void @c_promise_await(%Pos, %Neg)\n!!!MULTILINEMARKER!!!\n\nextern async def await[T](promise: Promise[T]): T =\n js "$effekt.callcc(callback => ${promise}.promise.then(res => callback(res)))"\n llvm !!!MULTILINEMARKER!!!\n call void @c_promise_await(%Pos ${promise}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\nextern async def resolve[T](promise: Promise[T], value: T): Unit =\n js "$effekt.callcc(callback => { ${promise}.resolve(${value}); callback($effekt.unit)})"\n llvm !!!MULTILINEMARKER!!!\n call void @c_promise_resolve(%Pos ${promise}, %Pos ${value}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\nnamespace promise {\n extern js !!!MULTILINEMARKER!!!\n function promise$make() {\n let resolve;\n const promise = new Promise((res, rej) => {\n resolve = res;\n });\n return { resolve: resolve, promise: promise };\n }\n !!!MULTILINEMARKER!!!\n\n extern io def make[T](): Promise[T] =\n js "promise$make()"\n llvm !!!MULTILINEMARKER!!!\n %promise = call %Pos @c_promise_make()\n ret %Pos %promise\n !!!MULTILINEMARKER!!!\n}\n'),zs("common/bench.effekt",'module bench\n\n/**\n * The current time (since UNIX Epoch) in nanoseconds.\n *\n * The actual precision varies across the different backends.\n * - js: Milliseconds\n * - chez: Microseconds\n * - ml: Microseconds\n */\nextern io def timestamp(): Int =\n js "Date.now() * 1000000"\n chez "(timestamp)"\n ml "IntInf.toInt (Time.toNanoseconds (Time.now ()))"\n llvm !!!MULTILINEMARKER!!!\n %time_ptr = alloca { i64, i64 }\n call i32 @clock_gettime(i32 0, ptr %time_ptr)\n %time = load {i64, i64}, ptr %time_ptr\n %time_seconds = extractvalue {i64, i64} %time, 0\n %time_nanoseconds = extractvalue {i64, i64} %time, 1\n %time_seconds_nanoseconds = mul nsw i64 %time_seconds, 1000000000\n %result = add nsw i64 %time_seconds_nanoseconds, %time_nanoseconds\n ret %Int %result\n !!!MULTILINEMARKER!!!\n\nextern llvm !!!MULTILINEMARKER!!!\n declare i32 @clock_gettime(i32, ptr)\n!!!MULTILINEMARKER!!!\n\n/**\n * High-precision timestamp in nanoseconds that should be for measurements.\n *\n * This timestamp should only be used for **relative** measurements,\n * as gives no guarantees on the absolute time (unlike a UNIX timestamp).\n */\nextern io def relativeTimestamp(): Int =\n js "Math.round(performance.now() * 1000000)"\n default { timestamp() }\n\n/**\n * Runs the block and returns the time in nanoseconds\n */\ndef timed { block: => Unit }: Int = {\n val before = relativeTimestamp()\n block()\n val after = relativeTimestamp()\n after - before\n}\n\ndef measure(warmup: Int, iterations: Int) { block: => Unit }: Unit = {\n def run(n: Int, report: Bool): Unit = {\n if (n <= 0) { () } else {\n val time = timed { block() };\n if (report) { println(time) } else { () };\n run(n - 1, report)\n }\n }\n run(warmup, false)\n run(iterations, true)\n}\n'),zs("common/queue.effekt","module queue\n\nimport array\n\n/**\n * Mutable, automatically resizing queue.\n */\ninterface Queue[T] {\n def empty?(): Bool\n\n def popFront(): Option[T]\n\n def popBack(): Option[T]\n\n def peekFront(): Option[T]\n\n def peekBack(): Option[T]\n\n def pushFront(el: T): Unit\n\n def pushBack(el: T): Unit\n}\n\n\ndef emptyQueue[T](): Queue[T] at {global} =\n emptyQueue[T](64)\n\ndef emptyQueue[T](initialCapacity: Int): Queue[T] at {global} = {\n\n var contents in global = array[Option[T]](initialCapacity, None())\n var head in global = 0\n var tail in global = 0\n var size in global = 0\n var capacity in global = initialCapacity\n\n def remove(arr: Array[Option[T]], index: Int): Option[T] = {\n with on[OutOfBounds].default { None() };\n val value = arr.get(index);\n arr.set(index, None());\n value\n }\n\n def nonEmpty[T] { p: => Option[T] / Exception[OutOfBounds] }: Option[T] =\n if (size <= 0) None() else on[OutOfBounds].default { None() } { p() }\n\n // Exponential back-off\n def resizeTo(requiredSize: Int): Unit =\n if (requiredSize <= capacity) () else {\n with on[OutOfBounds].ignore // should not happen\n\n val oldSize = capacity\n val newSize = capacity * 2\n val oldContents = contents\n val newContents = array::allocate[Option[T]](newSize)\n\n if (head < tail) {\n // The queue does not wrap around; direct copy is possible.\n copy(oldContents, head, newContents, 0, size) // changed tail to size\n } else if (size > 0) {\n // The queue wraps around; copy in two segments.\n copy(oldContents, head, newContents, 0, oldSize - head) // changed oldSize to oldSize - head\n copy(oldContents, 0, newContents, oldSize - head, tail) // changed oldSize - head to oldSize - head\n }\n\n contents = newContents\n capacity = newSize\n head = 0\n tail = oldSize\n }\n\n def queue = new Queue[T] {\n def empty?() = size <= 0\n\n def popFront() =\n nonEmpty {\n val result = contents.remove(head)\n head = mod(head + 1, capacity)\n size = size - 1\n result\n }\n\n def popBack() =\n nonEmpty {\n tail = mod(tail - 1 + capacity, capacity)\n val result = contents.remove(tail)\n size = size - 1\n result\n }\n\n def peekFront() = nonEmpty { contents.get(head) }\n\n def peekBack() = nonEmpty { contents.get(tail) }\n\n def pushFront(el: T) = {\n resizeTo(size + 1);\n head = mod(head - 1 + capacity, capacity);\n size = size + 1;\n contents.unsafeSet(head, Some(el))\n }\n\n def pushBack(el: T) = {\n resizeTo(size + 1);\n contents.unsafeSet(tail, Some(el));\n size = size + 1;\n tail = mod(tail + 1, capacity)\n }\n }\n queue\n}\n\nnamespace examples {\n def main() = {\n // queue with initial capacity 4\n def b = emptyQueue[Int](4);\n println(b.empty?);\n b.pushFront(1);\n b.pushBack(2);\n b.pushFront(3);\n b.pushBack(4);\n // this will cause resizing:\n b.pushBack(5);\n b.pushBack(6);\n b.pushBack(7);\n b.pushBack(8);\n // and again:\n b.pushBack(9);\n\n println(b.empty?);\n println(b.popFront()); // Some(3)\n println(b.popFront()); // Some(1)\n println(b.popFront()); // Some(2)\n println(b.popFront()); // Some(4)\n println(b.popFront()); // Some(5)\n println(b.popFront()); // Some(6)\n println(b.popFront()); // Some(7)\n println(b.popFront()); // Some(8)\n println(b.popFront()); // Some(9)\n println(b.popFront()); // None()\n }\n}\n"),zs("common/bytes.effekt",'module bytes\n\n/**\n * A memory managed, mutable, fixed-length buffer of bytes.\n */\nextern type Bytes\n // = llvm "%Pos"\n // = js "Uint8Array"\n\n/**\n * Allocates new bytes with the given `capacity`, setting its values to `0`.\n */\nextern io def bytes(capacity: Int): Bytes =\n js "(new Uint8Array(${capacity}))"\n llvm !!!MULTILINEMARKER!!!\n %buf = call %Pos @c_buffer_construct_uninitialized(i64 ${capacity})\n ret %Pos %buf\n !!!MULTILINEMARKER!!!\n\ndef copy(b: Bytes): Bytes = {\n val len = b.size\n val clone = bytes(len)\n copy(b, clone, 0, 0, len)\n clone\n}\n\nextern io def copy(from: Bytes, to: Bytes, startFrom: Int, startTo: Int, length: Int): Unit =\n js "bytes$copy(${from}, ${to}, ${startFrom}, ${startTo}, ${length})"\n llvm !!!MULTILINEMARKER!!!\n call void @c_buffer_copy(%Pos ${from}, %Pos ${to}, i64 ${startFrom}, i64 ${startTo}, i64 ${length})\n ; return Unit\n ret %Pos zeroinitializer\n !!!MULTILINEMARKER!!!\n\nextern pure def size(b: Bytes): Int =\n js "${b}.length"\n llvm !!!MULTILINEMARKER!!!\n %size = call i64 @c_buffer_length(%Pos ${b})\n ret i64 %size\n !!!MULTILINEMARKER!!!\n\nextern io def read(b: Bytes, index: Int): Byte =\n js "(${b})[${index}]"\n llvm !!!MULTILINEMARKER!!!\n %byte = call i8 @c_buffer_index(%Pos ${b}, i64 ${index})\n ret i8 %byte\n !!!MULTILINEMARKER!!!\n\n// TODO should return the number of bytes written.\nextern io def write(b: Bytes, index: Int, value: Byte): Unit =\n js "bytes$set(${b}, ${index}, ${value})"\n llvm !!!MULTILINEMARKER!!!\n call void @c_buffer_set(%Pos ${b}, i64 ${index}, i8 ${value})\n ; return Unit\n ret %Pos zeroinitializer\n !!!MULTILINEMARKER!!!\n\n/**\n * Returns an *aliased* slice of b starting at offset with the given length\n */\ndef slice(b: Bytes, offset: Int, length: Int): Bytes = {\n def validOffset() = offset >= 0 && offset < b.size\n def validLength() = length >= 0 && (offset + length) <= b.size\n if (validOffset() && validLength()) unsafe::slice(b, offset, length)\n else panic("Invalid slice of bytes (size: " ++ b.size.show ++ ", offset: " ++ offset.show ++ ", length: " ++ length.show ++ ")")\n}\n\n\n/**\n * Returns a view into the buffer, with the length truncated to n\n */\ndef truncated(b: Bytes, n: Int): Bytes =\n b.slice(0, n)\n\nextern pure def fromUTF8(s: String): Bytes =\n js "(new TextEncoder().encode(${s}))"\n llvm !!!MULTILINEMARKER!!!\n %copy = call %Pos @c_buffer_clone(%Pos ${s})\n ret %Pos %copy\n !!!MULTILINEMARKER!!!\n\nextern pure def toUTF8(b: Bytes): String =\n js "(new TextDecoder(\'utf-8\').decode(${b}))"\n // assuming the buffer is already in UTF-8\n llvm !!!MULTILINEMARKER!!!\n %copy = call %Pos @c_buffer_clone(%Pos ${b})\n ret %Pos %copy\n !!!MULTILINEMARKER!!!\n\nnamespace unsafe {\n /**\n * Unsafe: offset and length are not checked.\n */\n extern io def slice(b: Bytes, offset: Int, length: Int): Bytes =\n js "new Uint8Array(${b}.buffer, ${offset}, ${length})"\n llvm !!!MULTILINEMARKER!!!\n %buf = call %Pos @c_buffer_slice(%Pos ${b}, i64 ${offset}, i64 ${length})\n ret %Pos %buf\n !!!MULTILINEMARKER!!!\n\n}\n\n\nextern js !!!MULTILINEMARKER!!!\n function bytes$set(bytes, index, value) {\n bytes[index] = value;\n return $effekt.unit;\n }\n\n function bytes$clone(original) {\n let copy = new Uint8Array(original.length);\n copy.set(original);\n return copy;\n }\n\n function bytes$copy(from, to, startFrom, startTo, length) {\n // Check bounds\n if (startFrom + length > from.length || startTo + length > to.length) {\n throw new RangeError(\'Index out of bounds\');\n }\n\n // Create a subarray of \'from\' and set it into \'to\'\n to.set(from.subarray(startFrom, startFrom + length), startTo);\n}\n!!!MULTILINEMARKER!!!\n'),zs("common/process.effekt",'module process\n\nextern io def exit(errorCode: Int): Nothing =\n js "(function() { process.exit(${errorCode}) })()"\n llvm !!!MULTILINEMARKER!!!\n call void @exit(i64 ${errorCode})\n ret %Pos zeroinitializer\n !!!MULTILINEMARKER!!!\n chez "(exit ${errorCode})"\n ml "(Posix.Process.exit (Word8.fromInt ${errorCode}))"\n'),zs("common/buffer.effekt",'module buffer\n\nimport array\n\n// TODO (in Effekt compiler)\n// - [ ] fix allocating into actually global region\n// - [ ] fix exceptions on objects\n// - [X] allow omitting braces after `at` for singleton regions\n\nrecord BufferOverflow()\n\n/**\n * Fixed-size ring buffers (queues) where one can write\n * elements to the head and read from the tail.\n */\ninterface Buffer[T] {\n /**\n * The remaining capacity\n */\n def capacity(): Int\n\n /**\n * Is this buffer full?\n */\n def full?(): Bool\n\n /**\n * Is this buffer empty?\n */\n def empty?(): Bool\n\n /**\n * Read an element from the tail of the buffer\n */\n def read(): Option[T]\n\n /**\n * Write an element to the head of the buffer\n */\n def write(el: T): Unit / Exception[BufferOverflow]\n}\n\ndef emptyBuffer[T](capacity: Int): Buffer[T] at {global} = {\n if (capacity == 1) refBuffer()\n else arrayBuffer(capacity)\n}\ndef arrayBuffer[T](initialCapacity: Int): Buffer[T] at {global} = {\n // TODO allocate buffer (and array) into a region r.\n val contents = emptyArray[T](initialCapacity)\n var head in global = 0\n var tail in global = 0\n\n def size(): Int =\n if (tail >= head) { tail - head }\n else { initialCapacity - head + tail }\n\n def capacity(): Int = initialCapacity - size()\n\n def buffer = new Buffer[T] {\n def capacity() = capacity()\n def full?() = capacity() <= 0\n def empty?() = size() <= 0\n def read() = {\n if (buffer.empty?) None()\n else {\n val result: T = contents.remove(head).getOrElse { <> };\n head = mod(head + 1, initialCapacity)\n Some(result)\n }\n }\n def write(el: T) = {\n if (buffer.full?) <> // raise(BufferOverflow())\n\n contents.put(tail, el)\n tail = mod(tail + 1, initialCapacity)\n }\n }\n buffer\n}\ndef refBuffer[T](): Buffer[T] at {global} = {\n var content: Option[T] in global = None()\n new Buffer[T] {\n def capacity() = if (content.isEmpty) 1 else 0\n def full?() = content.isDefined\n def empty?() = isEmpty(content)\n def read() = {\n val res = content\n content = None()\n res\n }\n def write(el: T) = content match {\n case Some(v) =>\n <> // do raise(BufferOverflow(), "Cannot read element from buffer")\n case None() =>\n content = Some(el)\n }\n }\n}\n\nnamespace examples {\n def main() = ignore[BufferOverflow] {\n // Buffer with capacity 1\n def b = emptyBuffer[Int](1);\n println(b.capacity);\n println(b.full?);\n\n b.write(17);\n println(b.read());\n\n // buffer with capacity 3\n def ringbuffer = emptyBuffer[Int](3);\n ringbuffer.write(1);\n ringbuffer.write(2);\n println(ringbuffer.read());\n ringbuffer.write(3);\n println(ringbuffer.read());\n println(ringbuffer.read());\n ringbuffer.write(4);\n ringbuffer.write(5);\n println(ringbuffer.read());\n println(ringbuffer.read());\n }\n}'),zs("common/array.effekt",'module array\n\nimport effekt\nimport exception\nimport list\n\n/**\n * A mutable 0-indexed fixed-sized array.\n */\nextern type Array[T]\n\n/**\n * Allocates a new array of size `size`, keeping its values _undefined_.\n * Prefer using `array` constructor instead to ensure that values are defined.\n */\nextern global def allocate[T](size: Int): Array[T] =\n js "(new Array(${size}))"\n chez "(make-vector ${size})" // creates an array filled with 0s on CS\n llvm !!!MULTILINEMARKER!!!\n %z = call %Pos @c_array_new(%Int ${size})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\n/**\n * Creates a new Array of size `size` filled with the value `init`\n */\nextern global def array[T](size: Int, init: T): Array[T] =\n ml "Array.array (${size}, ${init})"\n default {\n val arr = allocate[T](size);\n each(0, size) { i =>\n unsafeSet(arr, i, init)\n };\n arr\n }\n\n/**\n * Converts a List `list` to an Array\n */\ndef fromList[T](list: List[T]): Array[T] = {\n val listSize = list.size();\n val arr = allocate(listSize);\n\n foreachIndex(list) { (i, head) =>\n arr.unsafeSet(i, head)\n }\n return arr;\n}\n\n/**\n * Gets the length of the array in constant time.\n */\nextern pure def size[T](arr: Array[T]): Int =\n js "${arr}.length"\n chez "(vector-length ${arr})"\n ml "Array.length ${arr}"\n llvm !!!MULTILINEMARKER!!!\n %z = call %Int @c_array_size(%Pos ${arr})\n ret %Int %z\n !!!MULTILINEMARKER!!!\n\n/**\n * Gets the element of the `arr` at given `index` in constant time.\n * Unchecked Precondition: `index` is in bounds (0 ≤ index < arr.size)\n *\n * Prefer using `get` instead.\n */\nextern global def unsafeGet[T](arr: Array[T], index: Int): T =\n js "${arr}[${index}]"\n chez "(vector-ref ${arr} ${index})"\n ml "Array.sub (${arr}, ${index})"\n llvm !!!MULTILINEMARKER!!!\n %z = call %Pos @c_array_get(%Pos ${arr}, %Int ${index})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\nextern js !!!MULTILINEMARKER!!!\nfunction array$set(arr, index, value) {\n arr[index] = value;\n return $effekt.unit\n}\n!!!MULTILINEMARKER!!!\n\n /**\n * Sets the element of the `arr` at given `index` to `value` in constant time.\n * Unchecked Precondition: `index` is in bounds (0 ≤ index < arr.size)\n *\n * Prefer using `set` instead.\n */\nextern global def unsafeSet[T](arr: Array[T], index: Int, value: T): Unit =\n js "array$set(${arr}, ${index}, ${value})"\n chez "(begin (vector-set! ${arr} ${index} ${value}) #f)"\n ml "Array.update (${arr}, ${index}, ${value})"\n llvm !!!MULTILINEMARKER!!!\n %z = call %Pos @c_array_set(%Pos ${arr}, %Int ${index}, %Pos ${value})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\n/**\n * Creates a copy of `arr`\n */\ndef copy[T](arr: Array[T]): Array[T] = {\n with on[OutOfBounds].default { <> }; // should not happen\n val len = arr.size;\n val newArray = allocate[T](len);\n copy[T](arr, 0, newArray, 0, len);\n newArray\n}\n\n/**\n * Copies `length`-many elements from `from` to `to`\n * starting at `start` (in `from`) and `offset` (in `to`)\n */\ndef copy[T](from: Array[T], start: Int, to: Array[T], offset: Int, length: Int): Unit / Exception[OutOfBounds] = {\n val startValid = start >= 0 && start + length <= from.size\n val offsetValid = offset >= 0 && offset + length <= to.size\n\n def go(i: Int, j: Int, length: Int): Unit =\n if (length > 0) {\n to.unsafeSet(j, from.unsafeGet(i))\n go(i + 1, j + 1, length - 1)\n }\n\n if (startValid && offsetValid) go(start, offset, length)\n else do raise(OutOfBounds(), "Array index out of bounds, when copying")\n}\n\n// Derived operations:\n\n/**\n * Gets the element of the `arr` at given `index` in constant time,\n * throwing an `Exception[OutOfBounds]` unless `0 ≤ index < arr.size`.\n */\ndef get[T](arr: Array[T], index: Int): T / Exception[OutOfBounds] =\n if (index >= 0 && index < arr.size) arr.unsafeGet(index)\n else do raise(OutOfBounds(), "Array index out of bounds: " ++ show(index))\n\n/**\n * Sets the element of the `arr` at given `index` to `value` in constant time,\n * throwing an `Exception[OutOfBounds]` unless `0 ≤ index < arr.size`.\n */\ndef set[T](arr: Array[T], index: Int, value: T): Unit / Exception[OutOfBounds] =\n if (index >= 0 && index < arr.size) unsafeSet(arr, index, value)\n else do raise(OutOfBounds(), "Array index out of bounds: " ++ show(index))\n\n/**\n * Builds a new Array of size `size` from a computation `index` which gets an index\n * and returns a value that will be on that position in the resulting array\n */\ndef build[T](size: Int) { index: Int => T }: Array[T] = {\n val arr = allocate[T](size);\n each(0, size) { i =>\n unsafeSet(arr, i, index(i))\n };\n arr\n}\n\n// Utility functions:\n\ndef toList[T](arr: Array[T]): List[T] = {\n var i = arr.size - 1;\n var l = Nil[T]()\n while (i >= 0) {\n l = Cons(arr.unsafeGet(i), l)\n i = i - 1\n }\n l\n}\n\ndef foreach[T](arr: Array[T]){ action: T => Unit }: Unit =\n each(0, arr.size) { i =>\n val x: T = arr.unsafeGet(i)\n action(x)\n }\n\ndef foreach[T](arr: Array[T]){ action: (T) {Control} => Unit }: Unit =\n each(0, arr.size) { (i) {label} =>\n val x: T = arr.unsafeGet(i)\n action(x) {label}\n }\n\ndef foreachIndex[T](arr: Array[T]){ action: (Int, T) => Unit }: Unit =\n each(0, arr.size) { i =>\n val x: T = arr.unsafeGet(i)\n action(i, x)\n }\n\ndef foreachIndex[T](arr: Array[T]){ action: (Int, T) {Control} => Unit }: Unit =\n each(0, arr.size) { (i) {label} =>\n val x: T = arr.unsafeGet(i)\n action(i, x) {label}\n }\n\ndef sum(list: Array[Int]): Int = {\n var acc = 0\n list.foreach { x =>\n acc = acc + x\n }\n acc\n}\n\n// Show Instances\n// --------------\n\ndef show[A](arr: Array[A]) { showA: A => String }: String = {\n var output = "Array("\n val lastIndex = arr.size - 1\n\n arr.foreachIndex { (index, a) =>\n if (index == lastIndex) output = output ++ showA(a)\n else output = output ++ showA(a) ++ ", "\n }\n output = output ++ ")"\n\n output\n}\ndef show(l: Array[Int]): String = show(l) { e => show(e) }\ndef show(l: Array[Double]): String = show(l) { e => show(e) }\ndef show(l: Array[Bool]): String = show(l) { e => show(e) }\ndef show(l: Array[String]): String = show(l) { e => e }\n\ndef println(l: Array[Int]): Unit = println(show(l))\ndef println(l: Array[Double]): Unit = println(show(l))\ndef println(l: Array[Bool]): Unit = println(show(l))\ndef println(l: Array[String]): Unit = println(show(l))\n'),zs("common/option.effekt",'module option\n\nimport effekt\nimport exception\n\ntype Option[A] {\n None();\n Some(value: A)\n}\n\ndef isDefined[A](self: Option[A]): Bool = self match {\n case None() => false\n case Some(v) => true\n}\n\ndef isEmpty[A](self: Option[A]): Bool =\n self.isDefined.not\n\ndef orElse[A](self: Option[A]) { that: => Option[A] }: Option[A] = self match {\n case None() => that()\n case Some(v) => Some(v)\n}\n\ndef getOrElse[A](self: Option[A]) { that: => A }: A = self match {\n case None() => that()\n case Some(v) => v\n}\n\ndef map[A, B](self: Option[A]) { f: A => B }: Option[B] = self match {\n case None() => None()\n case Some(v) => Some(f(v))\n}\n\ndef foreach[A](self: Option[A]) { f: A => Unit }: Unit = self match {\n case None() => ()\n case Some(v) => f(v)\n}\n\ndef value[A](self: Option[A]): A / Exception[MissingValue] = self match {\n case None() => do raise(MissingValue(), "Trying to get the value of an empty option")\n case Some(v) => v\n}\n\ndef option[A] { p: => A / Exception[MissingValue] }: Option[A] =\n try { Some(p()) }\n with Exception[MissingValue] { def raise(_, _) = None() }\n\ndef option[A, E](proxy: on[E]) { p: => A / Exception[E] }: Option[A] =\n try { Some(p()) }\n with Exception[E] { def raise(_, _) = None() }\n\n// Interop with FFI\n// ---------------\n// These functions should only be used by libraries that interface with FFI\ndef undefinedToOption[A](value: A): Option[A] =\n if (value.isUndefined) { None() } else { Some(value) }\n\n\n// Show Instances\n// --------------\n\ndef show[A](o: Option[A]) { showA: A => String }: String = o match {\n case None() => "None()"\n case Some(v) => "Some(" ++ showA(v) ++ ")"\n}\ndef show(o: Option[Int]): String = show(o) { e => show(e) }\ndef show(o: Option[Double]): String = show(o) { e => show(e) }\ndef show(o: Option[Bool]): String = show(o) { e => show(e) }\n\ndef println(o: Option[Int]): Unit = println(show(o))\ndef println(o: Option[Double]): Unit = println(show(o))\ndef println(o: Option[Bool]): Unit = println(show(o))\n'),zs("common/string.effekt",'module string\n\nimport effekt\nimport option\nimport list\nimport exception\nimport result\n\n// TODO\n// - [ ] handle unicode codepoints (that can span two indices) correctly\n// - [ ] use string buffers or other buffers to implement repeated concatenation more efficiently (and `join`)\n// - [ ] maybe use native implementations for toInt, repeat, split, indexOf, etc.\n\n/**\n * Strings\n * - JS: Strings are represented as UTF-16 code units where some characters take 2 slots (surrogate pairs)\n * - ML: Strings are sequences of 8-bit characters (https://smlfamily.github.io/Basis/string.html)\n * - Chez: Strings are sequences of unicode characters (?)\n * - LLVM: UTF-8 (characters can take from 1-4 bytes).\n */\n\n\n// Operations\n// ----------\n\ndef substring(str: String, from: Int, to: Int): String = {\n def clamp(lower: Int, x: Int, upper: Int) = max(lower, min(x, upper))\n val lower = clamp(0, from, to)\n val upper = clamp(0, to, str.length)\n str.unsafeSubstring(lower, upper)\n}\n\ndef substring(str: String, from: Int): String =\n str.substring(from, str.length)\n\n\n/**\n * Checks whether str starts with the given prefix at `from`\n */\ndef isSubstringAt(str: String, prefix: String, from: Int): Bool = {\n with default[OutOfBounds, Bool] { false };\n\n val stringLength = str.length\n val prefixLength = prefix.length\n\n def done?(index: Int): Bool = index >= prefixLength\n def matches?(index: Int): Bool = prefix.charAt(index) == str.charAt(index + from)\n\n def go(index: Int): Bool =\n if (index.done?) true\n else if (index.matches?) go(index + 1) else false\n\n go(0)\n}\n\ndef startsWith(str: String, prefix: String): Bool =\n isSubstringAt(str, prefix, 0)\n\ndef endsWith(str: String, suffix: String): Bool =\n isSubstringAt(str, suffix, str.length - suffix.length)\n\n/**\n * Repeats the given string n-times.\n *\n * TODO use a more efficient way of appending strings like a buffer\n */\ndef repeat(str: String, n: Int): String = {\n def go(n: Int, result: String): String = {\n if (n == 0) result\n else go(n - 1, result ++ str)\n }\n go(n, "")\n}\n\n// TODO use .split() in JS\ndef split(str: String, sep: String): List[String] = {\n val strLength = str.length\n val sepLength = sep.length\n\n // special case: seperator is empty, just emit individual chars\n def empty(index: Int, components: List[String]): List[String] =\n if (index >= strLength) components.reverse\n else empty(index + 1, Cons(str.substring(index, index + 1), components))\n\n def go(lastIndex: Int, components: List[String]): List[String] =\n indexOf(str, sep, lastIndex) match {\n case None() =>\n Cons(str.substring(lastIndex, strLength), components).reverse\n case Some(index) =>\n go(index + sepLength, Cons(str.substring(lastIndex, index), components))\n }\n\n if (sepLength == 0) empty(0, Nil())\n else go(0, Nil())\n}\n\ndef join(strings: List[String], sep: String): String = {\n def go(strings: List[String], result: String): String = strings match {\n case Nil() => result\n case Cons(s, rest) => go(rest, result ++ sep ++ s)\n }\n strings match {\n case Nil() => ""\n case Cons(first, rest) => go(rest, first)\n }\n}\n\nextern pure def trim(str: String): String =\n js "${str}.trim()"\n\n// Parsing\n// -------\ndef toBool(s: String): Bool / Exception[WrongFormat] = s match {\n case "true" => true\n case "false" => false\n case _ => wrongFormat("Not a boolean value: \'" ++ s ++ "\'")\n}\n\n// TODO optimize (right now this will be horribly slow (compared to the native JS version)\ndef toInt(str: String): Int / Exception[WrongFormat] = {\n\n val zero = \'0\'.toInt\n\n def go(index: Int, acc: Int): Int = {\n result[Char, OutOfBounds] { str.charAt(index) } match {\n case Success(c) and c >= \'0\' and c <= \'9\' =>\n go(index + 1, 10 * acc + (c.toInt - zero))\n case Success(c) => wrongFormat("Not a valid number: \'" ++ str ++ "\'")\n // wrong index means we are done parsing\n case Error(_, _) => acc\n }\n }\n\n with default[OutOfBounds, Int] { wrongFormat("Empty string is not a valid number") };\n\n str.charAt(0) match {\n case \'-\' => 0 - go(1, 0)\n case _ => go(0, 0)\n }\n}\n\n// TODO optimize (right now this will be horribly slow (compared to the native JS version)\ndef toInt(str: String, base: Int): Int / Exception[WrongFormat] = {\n\n if( base > 36 || base < 1 ) {\n wrongFormat("Invalid base: " ++ base.show)\n }\n\n val zero = \'0\'.toInt\n val l_a = \'a\'.toInt\n val u_a = \'A\'.toInt\n\n def parseDigit(c: Char): Option[Int] = {\n if( c >= \'0\' and c <= \'9\' and c.toInt - zero < base ) {\n Some(c.toInt - zero)\n } else if( c >= \'a\' and c <= \'z\' and c.toInt - l_a < base - 10 ) {\n Some(c.toInt - l_a + 10)\n } else if( c >= \'A\' and c <= \'Z\' and c.toInt - u_a < base - 10) {\n Some(c.toInt - u_a + 10)\n } else {\n None()\n }\n }\n\n def go(index: Int, acc: Int): Int = {\n result[Char, OutOfBounds] { str.charAt(index) } match {\n case Success(c) and parseDigit(c) is Some(d) =>\n go(index + 1, base * acc + d)\n case Success(c) => wrongFormat("Not a valid number: \'" ++ str ++ "\'")\n // wrong index means we are done parsing\n case Error(_, _) => acc\n }\n }\n\n with default[OutOfBounds, Int] { wrongFormat("Empty string is not a valid number") };\n\n str.charAt(0) match {\n case \'-\' => 0 - go(1, 0)\n case _ => go(0, 0)\n }\n}\n\n// Native versions of toInt (unused right now)\n// ML: also accepts sml style `~2` for unary minus along with `+2` and `-2`\nextern pure def unsafeToInt(str: String): Int =\n js "(Number.isNaN(parseInt(${str})) ? undefined : parseInt(${str}))"\n chez "(string->number ${str})"\n ml "Int.fromString ${str}"\n\n\n/**\n * Returns the index of the first occurrence of `sub` in `str`\n */\ndef indexOf(str: String, sub: String): Option[Int] =\n indexOf(str, sub, 0)\n\ndef indexOf(str: String, sub: String, from: Int): Option[Int] = {\n val len = str.length\n def go(index: Int): Option[Int] =\n if (index >= len) None()\n else if (str.isSubstringAt(sub, index)) Some(index)\n else go(index + 1)\n\n go(from)\n}\n\n/**\n * Returns the index of the last occurence of `sub` in `str`\n */\ndef lastIndexOf(str: String, sub: String): Option[Int] =\n lastIndexOf(str, sub, str.length)\n\ndef lastIndexOf(str: String, sub: String, from: Int): Option[Int] = {\n def go(index: Int): Option[Int] =\n if (index < 0) None()\n else if (str.isSubstringAt(sub, index)) Some(index)\n else go(index - 1)\n\n go(from)\n}\n\n// TODO more efficient (native) implementations could be integrated as follows\n\n// extern pure def indexOf(str: String, sub: String): Option[Int] =\n// //js { nativeIndexOf(str, sub) }\n// default { indexOf(str, sub, 0) }\n\n// def nativeIndexOf(str: String, sub: String): Option[Int] = {\n// val index = str.unsafeIndexOf(sub)\n// if (index < 0) { None() } else { Some(index) }\n// }\n\n// extern pure def unsafeIndexOf(str: String, sub: String): Int =\n// js "${str}.indexOf(${sub})"\n\ninterface Stream {\n def emit(string: Char): Unit\n}\n\ndef string[T] { prog: => T / Stream }: (T, String) = <>\n\n// TODO implement after concurrent IO (we need to stub `process.stdout` in JS for browsers).\ndef printing[T] { prog: => T / Stream }: T = <>\n\n\n// ANSI escape codes\nnamespace ANSI {\n val BLACK = "\\u001b[30m"\n val RED = "\\u001b[31m"\n val GREEN = "\\u001b[32m"\n val YELLOW = "\\u001b[33m"\n val BLUE = "\\u001b[34m"\n val MAGENTA = "\\u001b[35m"\n val CYAN = "\\u001b[36m"\n val WHITE = "\\u001b[37m"\n\n val BG_BLACK = "\\u001b[40m"\n val BG_RED = "\\u001b[41m"\n val BG_GREEN = "\\u001b[42m"\n val BG_YELLOW = "\\u001b[43m"\n val BG_BLUE = "\\u001b[44m"\n val BG_MAGENTA = "\\u001b[45m"\n val BG_CYAN = "\\u001b[46m"\n val BG_WHITE = "\\u001b[47m"\n\n val RESET = "\\u001b[0m"\n}\n\n\n// Characters\n// ----------\n//\n// JS: Int (Unicode codepoints)\n// CS: ?\n// ML: 8-bit https://smlfamily.github.io/Basis/char.html\n// LLVM: i64 representing utf-8 (varying length 1-4 bytes)\n\nextern pure def toString(ch: Char): String =\n js "String.fromCodePoint(${ch})"\n chez "(string (integer->char ${ch}))"\n llvm !!!MULTILINEMARKER!!!\n %z = call %Pos @c_buffer_show_Char(%Int ${ch})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\n// Since we currently represent Char by integers in all backends, we could reuse comparison\nextern pure def toInt(ch: Char): Int =\n js "${ch}"\n chez "${ch}"\n ml "${ch}"\n llvm "ret %Int ${ch}"\n\nextern pure def toChar(codepoint: Int): Char =\n js "${codepoint}"\n chez "${codepoint}"\n ml "${codepoint}"\n llvm "ret %Int ${codepoint}"\n\n\nextern pure def infixLt(x: Char, y: Char): Bool =\n js "(${x} < ${y})"\n chez "(< ${x} ${y})"\n ml "(${x}: int) < ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = icmp slt %Int ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixLte(x: Char, y: Char): Bool =\n js "(${x} <= ${y})"\n chez "(<= ${x} ${y})"\n ml "(${x}: int) <= ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = icmp sle %Int ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixGt(x: Char, y: Char): Bool =\n js "(${x} > ${y})"\n chez "(> ${x} ${y})"\n ml "(${x}: int) > ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = icmp sgt %Int ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixGte(x: Char, y: Char): Bool =\n js "(${x} >= ${y})"\n chez "(>= ${x} ${y})"\n ml "(${x}: int) >= ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = icmp sge %Int ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\n// TODO iterator over codepoints (maybe use the JS primitive feature???)\n\nextern type StringIterator\n\n\n/**\n * Determines the number of bytes needed by a codepoint\n *\n * Also see: https://en.wikipedia.org/wiki/UTF-8\n */\ndef utf8ByteCount(codepoint: Char): Int = codepoint match {\n case c and c >= \\u0000 and c <= \\u007F => 1\n case c and c >= \\u0080 and c <= \\u07FF => 2\n case c and c >= \\u0800 and c <= \\uFFFF => 3\n case c and c >= \\u10000 and c <= \\u10FFFF => 4\n case c => panic("Not a valid code point")\n}\n\ndef utf16UnitCount(codepoint: Char): Int = codepoint match {\n case c and c >= \\u0000 and c <= \\uFFFF => 1\n case c and c >= \\u10000 and c <= \\u10FFFF => 4\n case c => panic("Not a valid code point")\n}\n\n// TODO this is copied from the LLVM-backend stdlib. Do we need this?\n// def showQuoted(s: String): String =\n// "\\x22" ++ s.map { c =>\n// if(c == "\\x22") {\n// "\\\\\\x22"\n// } else if (c == "\\\\") {\n// "\\\\\\\\"\n// } else c\n// } ++ "\\x22"\n\nextern pure def charWidth(c: Char): Int =\n // JavaScript strings are UTF-16 where every unicode character after 0xffff takes two units\n js "(${c} > 0xffff) ? 2 : 1"\n\ndef charAt(str: String, index: Int): Char / Exception[OutOfBounds] =\n if (index < 0 || index >= length(str))\n do raise(OutOfBounds(), "Index out of bounds: " ++ show(index) ++ " in string: \'" ++ str ++ "\'")\n else\n unsafeCharAt(str, index)\n\nextern pure def unsafeCharAt(str: String, n: Int): Char =\n js "${str}.codePointAt(${n})"\n chez "(char->integer (string-ref ${str} ${n}))"\n ml "(Char.ord (String.sub (${str}, ${n})))"\n llvm !!!MULTILINEMARKER!!!\n %x = call %Int @c_buffer_character_at(%Pos ${str}, i64 ${n})\n ret %Int %x\n !!!MULTILINEMARKER!!!\n'),zs("common/seq.effekt",'module seq\n\n/**\n * This file implements the [[Seq]] type as a general purpose functional sequence.\n *\n * Implemented as a 2-3 finger tree, it supports\n * - prepend and append in amortized O(1),\n * - concat(m, n) in O(log(min(m, n)))\n * - first and last in amortized O(1)\n * - size in amortized O(1)\n *\n * More information on finger trees:\n * https://www.staff.city.ac.uk/~ross/papers/FingerTree.pdf\n */\n\n/**\n * Sequences of elements\n *\n * They are represented as 2-3 finger trees.\n */\ntype Seq[A] {\n Empty()\n Single(value: A)\n Deep(size: Int, prefix: Digit[A], middle: Tree[A], suffix: Digit[A])\n}\n\n/**\n * Result of splitting a sequence at the front or back.\n */\ntype View[A] {\n IsEmpty()\n View(element: A, remainder: Seq[A])\n}\n\n/**\n * Exception[NoSuchElement] is raised when accessing non-existing elements\n * or splitting empty collections.\n */\nrecord NoSuchElement()\n\n\nrecord IndexOutOfBounds()\n\n\n\n// Implementation\n// ==============\n// Internal implementation note:\n// we use the following abbreviations:\n// - s: suffix\n// - p: prefix\n// - v: value\n// - n: node\n// - m: middle (spine)\n// - a,b,c,d: elements of a digit in this order\n//\n// we do not abbreviate:\n// - size\n\n\n// Internal Types\n// --------------\n\n/**\n * Internal grouping of 1-4 elements\n *\n * It is called digit since Okasaki (1998) calls finger trees "numerical operations".\n */\ntype Digit[A] {\n One(value: A)\n Two(first: A, second: A)\n Three(first: A, second: A, third: A)\n Four(first: A, second: A, third: A, fourth: A)\n}\n\n/**\n * Internal representation of a 2-3 tree\n */\ntype Node[A] {\n // These are necessary to avoid polymorphic recursion\n Leaf2(first: A, second: A)\n Leaf3(first: A, second: A, third: A)\n Node2(size: Int, first: Node[A], second: Node[A])\n Node3(size: Int, first: Node[A], second: Node[A], third: Node[A])\n}\n\n/**\n * Internal duplicate of Seq\n *\n * splitting into two type parameters is necessary since our MLton backend does\n * not support mutually recursive data type declarations.\n */\ntype Finger[A, N] {\n NoFinger()\n SingleFinger(value: Node[A])\n DeepFinger(size: Int, prefix: N, middle: Finger[A, N], suffix: N)\n}\n\n/**\n * Internal\n */\ntype Tree[A] = Finger[A, Digit[Node[A]]]\n\n/**\n * Internal\n */\ntype TreeView[A] {\n TreeIsEmpty()\n TreeView(element: Node[A], rest: Tree[A])\n}\n\n\n\n// Measure\n// -------\n\ndef size[A](node: Digit[A]): Int = node match {\n case One(_) => 1\n case Two(_, _) => 2\n case Three(_, _, _) => 3\n case Four(_, _, _, _) => 4\n}\n\ndef size[A](node: Node[A]): Int = node match {\n case Leaf2(_, _) => 2\n case Leaf3(_, _, _) => 3\n case Node2(size, _, _) => size\n case Node3(size, _, _, _) => size\n}\n\ndef sizeDeep[A](node: Digit[Node[A]]): Int = node match {\n case One(a) => a.size\n case Two(a, b) => a.size + b.size\n case Three(a, b, c) => a.size + b.size + c.size\n case Four(a, b, c, d) => a.size + b.size + c.size + d.size\n}\n\ndef size[A](tree: Tree[A]): Int = tree match {\n case NoFinger() => 0\n case SingleFinger(value) => value.size\n case DeepFinger(size, _, _, _) => size\n}\n\n/**\n * The size of the given sequence\n */\ndef size[A](seq: Seq[A]): Int = seq match {\n case Empty() => 0\n case Single(value) => 1\n case Deep(size, _, _, _) => size\n}\n\n\n// Internal smart constructors\n// ---------------------------\n\ndef deepFinger[A](prefix: Digit[Node[A]], middle: Tree[A], suffix: Digit[Node[A]]): Tree[A] =\n DeepFinger(prefix.sizeDeep + middle.size + suffix.sizeDeep, prefix, middle, suffix)\n\ndef deep[A](prefix: Digit[A], middle: Tree[A], suffix: Digit[A]): Seq[A] =\n Deep(prefix.size + middle.size + suffix.size, prefix, middle, suffix)\n\ndef node2[A](first: Node[A], second: Node[A]): Node[A] =\n Node2(first.size + second.size, first, second)\n\ndef node3[A](first: Node[A], second: Node[A], third: Node[A]): Node[A] =\n Node3(first.size + second.size + third.size, first, second, third)\n\n\n// Adding an element to the left\n// -----------------------------\n\ndef consFinger[A](head: Node[A], tail: Tree[A]): Tree[A] = tail match {\n case NoFinger() => SingleFinger(head)\n case SingleFinger(b) => deepFinger(One(head), NoFinger(), One(b))\n case DeepFinger(_, One(b), m, s) => deepFinger(Two(head, b), m, s)\n case DeepFinger(_, Two(b, c), m, s) => deepFinger(Three(head, b, c), m, s)\n case DeepFinger(_, Three(b, c, d), m, s) => deepFinger(Four(head, b, c, d), m, s)\n case DeepFinger(_, Four(b, c, d, e), m, s) =>\n deepFinger(Two(head, b), consFinger(node3(c, d, e), m), s)\n}\n\ndef cons[A](head: A, tail: Seq[A]): Seq[A] = tail match {\n case Empty() => Single(head)\n case Single(b) => Deep(2, One(head), NoFinger(), One(b))\n case Deep(size, One(b), m, s) => Deep(size + 1, Two(head, b), m, s)\n case Deep(size, Two(b, c), m, s) => Deep(size + 1, Three(head, b, c), m, s)\n case Deep(size, Three(b, c, d), m, s) => Deep(size + 1, Four(head, b, c, d), m, s)\n case Deep(size, Four(b, c, d, e), m, s) =>\n Deep(size + 1, Two(head, b), consFinger(Leaf3(c, d, e), m), s)\n}\n\n\n// Adding an element to the right\n// ------------------------------\n\ndef consFingerRight[A](init: Tree[A], last: Node[A]): Tree[A] = init match {\n case NoFinger() => SingleFinger(last)\n case SingleFinger(b) => deepFinger(One(b), NoFinger(), One(last))\n case DeepFinger(_, p, m, One(b)) => deepFinger(p, m, Two(b, last))\n case DeepFinger(_, p, m, Two(b, c)) => deepFinger(p, m, Three(b, c, last))\n case DeepFinger(_, p, m, Three(b, c, d)) => deepFinger(p, m, Four(b, c, d, last))\n case DeepFinger(_, p, m, Four(b, c, d, e)) =>\n deepFinger(p, consFingerRight(m, node3(b, c, d)), Two(e, last))\n}\n\ndef consRight[A](init: Seq[A], last: A): Seq[A] = init match {\n case Empty() => Single(last)\n case Single(b) => Deep(2, One(b), NoFinger(), One(last))\n case Deep(size, p, m, One(b)) => Deep(size + 1, p, m, Two(b, last))\n case Deep(size, p, m, Two(b, c)) => Deep(size + 1, p, m, Three(b, c, last))\n case Deep(size, p, m, Three(b, c, d)) => Deep(size + 1, p, m, Four(b, c, d, last))\n case Deep(size, p, m, Four(b, c, d, e)) =>\n Deep(size + 1, p, consFingerRight(m, Leaf3(b, c, d)), Two(e, last))\n}\n\n\n// Splitting the sequence on the left\n// ----------------------------------\n\ndef unconsFinger[A](seq: Tree[A]): TreeView[A] = seq match {\n case NoFinger() => TreeIsEmpty()\n case SingleFinger(v) => TreeView(v, NoFinger())\n // TODO this is a tail-call-modulo-context\n case DeepFinger(size, One(a), m, s) => TreeView(a, unconsFinger(m) match {\n case TreeIsEmpty() => s.toTree\n case TreeView(b, m2) => DeepFinger(size - a.size, b.toDigitNode, m2, s)\n })\n case DeepFinger(size, Two(a, b), m, s) => TreeView(a, DeepFinger(size - a.size, One(b), m, s))\n case DeepFinger(size, Three(a, b, c), m, s) => TreeView(a, DeepFinger(size - a.size, Two(b, c), m, s))\n case DeepFinger(size, Four(a, b, c, d), m, s) => TreeView(a, DeepFinger(size - a.size, Three(b, c, d), m, s))\n}\n\n// this could be called "uncons", "first", "front", "head", "popFront", "start", "popStart"\ndef uncons[A](seq: Seq[A]): View[A] = seq match {\n case Empty() => IsEmpty()\n case Single(v) => View(v, Empty())\n case Deep(size, One(a), m, s) => View(a, unconsFinger(m) match {\n case TreeIsEmpty() => s.toSeq\n case TreeView(b, m2) => Deep(size - 1, b.toDigit, m2, s)\n })\n case Deep(size, Two(a, b), m, s) => View(a, Deep(size - 1, One(b), m, s))\n case Deep(size, Three(a, b, c), m, s) => View(a, Deep(size - 1, Two(b, c), m, s))\n case Deep(size, Four(a, b, c, d), m, s) => View(a, Deep(size - 1, Three(b, c, d), m, s))\n}\n\ndef head[A](seq: Seq[A]): A / Exception[NoSuchElement] = seq.uncons match {\n case IsEmpty() => raise(NoSuchElement(), "Calling `head` on empty sequence.")\n case View(element, _) => element\n}\n\ndef tail[A](seq: Seq[A]): Seq[A] / Exception[NoSuchElement] = seq.uncons match {\n case IsEmpty() => raise(NoSuchElement(), "Calling `tail` on empty sequence.")\n case View(element, rest) => rest\n}\n\n\n// Splitting the sequence on the right\n// -----------------------------------\n\ndef unconsRightFinger[A](seq: Tree[A]): TreeView[A] = seq match {\n case NoFinger() => TreeIsEmpty()\n case SingleFinger(v) => TreeView(v, NoFinger())\n // TODO this is a tail-call-modulo-context\n case DeepFinger(size, p, m, One(a)) => TreeView(a, unconsRightFinger(m) match {\n case TreeIsEmpty() => p.toTree\n case TreeView(b, m2) => DeepFinger(size - a.size, p, m2, b.toDigitNode)\n })\n case DeepFinger(size, p, m, Two(a, b)) => TreeView(b, DeepFinger(size - b.size, p, m, One(a)))\n case DeepFinger(size, p, m, Three(a, b, c)) => TreeView(c, DeepFinger(size - c.size, p, m, Two(a, b)))\n case DeepFinger(size, p, m, Four(a, b, c, d)) => TreeView(d, DeepFinger(size - d.size, p, m, Three(a, b, c)))\n}\n\n// this could be called "uncons", "first", "front", "head", "popFront", "start", "popStart"\ndef unconsRight[A](seq: Seq[A]): View[A] = seq match {\n case Empty() => IsEmpty()\n case Single(v) => View(v, Empty())\n case Deep(size, p, m, One(a)) => View(a, unconsFinger(m) match {\n case TreeIsEmpty() => p.toSeq\n case TreeView(b, m2) => Deep(size - 1, p, m2, b.toDigit)\n })\n case Deep(size, p, m, Two(a, b)) => View(b, Deep(size - 1, p, m, One(a)))\n case Deep(size, p, m, Three(a, b, c)) => View(c, Deep(size - 1, p, m, Two(a, b)))\n case Deep(size, p, m, Four(a, b, c, d)) => View(d, Deep(size - 1, p, m, Three(a, b, c)))\n}\n\n\n// Concatenating Sequences\n// -----------------------\n\ndef concatTree[A](first: Tree[A], middle: List[Node[A]], second: Tree[A]): Tree[A] = {\n\n // can we get rid of the list?\n\n def prepend(nodes: List[Node[A]], tree: Tree[A]): Tree[A] = nodes match {\n case Nil() => tree\n case Cons(head, tail) => consFinger(head, prepend(tail, tree))\n }\n\n def append(tree: Tree[A], nodes: List[Node[A]]): Tree[A] = nodes match {\n case Nil() => tree\n case Cons(head, tail) => append(consFingerRight(tree, head), tail)\n }\n\n def consFinger(digit: Digit[Node[A]], tree: Tree[A]): Tree[A] = digit match {\n case One(a) => consFinger(a, tree)\n case Two(a, b) => consFinger(a, consFinger(b, tree))\n case Three(a, b, c) => consFinger(a, consFinger(b, consFinger(c, tree)))\n case Four(a, b, c, d) => consFinger(a, consFinger(b, consFinger(c, consFinger(d, tree))))\n }\n\n def toList(digit: Digit[Node[A]]): List[Node[A]] = digit match {\n case One(a) => Cons(a, Nil())\n case Two(a, b) => Cons(a, Cons(b, Nil()))\n case Three(a, b, c) => Cons(a, Cons(b, Cons(c, Nil())))\n case Four(a, b, c, d) => Cons(a, Cons(b, Cons(c, Cons(d, Nil()))))\n }\n\n def rebalance(nodes: List[Node[A]]): List[Node[A]] = nodes match {\n case Cons(a, Cons(b, Nil())) => Cons(node2(a, b), Nil())\n case Cons(a, Cons(b, Cons(c, Nil()))) => Cons(node3(a, b, c), Nil())\n case Cons(a, Cons(b, Cons(c, Cons(d, Nil())))) => Cons(node2(a, b), Cons(node2(c, d), Nil()))\n case Cons(a, Cons(b, Cons(c, rest))) => Cons(node3(a, b, c), rebalance(rest))\n case _ => <>\n }\n\n def go(prefix: Tree[A], middle: List[Node[A]], suffix: Tree[A]): Tree[A] =\n (prefix, suffix) match {\n case (NoFinger(), s) => prepend(middle, s)\n case (p, NoFinger()) => append(p, middle)\n case (SingleFinger(v), s) => consFinger(v, prepend(middle, s))\n case (p, SingleFinger(v)) => consFingerRight(append(p, middle), v)\n case (DeepFinger(size1, p1, m1, s1), DeepFinger(size2, p2, m2, s2)) =>\n val list = s1.toList.append(middle).append(p2.toList)\n DeepFinger(size1 + size2, p1, go(m1, rebalance(list), m2), s2)\n }\n\n go(first, middle, second)\n}\n\ndef concat[A](first: Seq[A], second: Seq[A]): Seq[A] = {\n def rebalance(t: List[A]): List[Node[A]] = t match {\n case Cons(a, Cons(b, Nil())) => Cons(Leaf2(a, b), Nil())\n case Cons(a, Cons(b, Cons(c, Nil()))) => Cons(Leaf3(a, b, c), Nil())\n case Cons(a, Cons(b, Cons(c, Cons(d, Nil())))) => Cons(Leaf2(a, b), Cons(Leaf2(c, d), Nil()))\n case Cons(a, Cons(b, Cons(c, rest))) => Cons(Leaf3(a, b, c), rebalance(rest))\n case _ => <>\n }\n\n (first, second) match {\n case (Empty(), other) => other\n case (other, Empty()) => other\n case (Single(v), other) => cons(v, other)\n case (other, Single(v)) => consRight(other, v)\n case (Deep(size1, p1, m1, s1), Deep(size2, p2, m2, s2)) =>\n Deep(size1 + size2, p1, concatTree(m1, rebalance(s1.toList.append(p2.toList)), m2), s2)\n }\n}\n\n\n// Predicates\n// ----------\n\ndef isEmpty[A](seq: Seq[A]): Bool = seq match {\n case Empty() => true\n case _ => false\n}\n\ndef nonEmpty[A](seq: Seq[A]): Bool = seq match {\n case Empty() => false\n case _ => true\n}\n\ndef reverse[A](seq: Seq[A]): Seq[A] = {\n\n // invariant for all internal functions: element is in the sequence\n\n // this is tail-recursive-modulo-context\n def go(node: Node[A]): Node[A] = node match {\n case Leaf2(a, b) => Leaf2(b, a)\n case Leaf3(a, b, c) => Leaf3(c, b, a)\n case Node2(size, a, b) => Node2(size, go(b), go(a))\n case Node3(size, a, b, c) => Node3(size, go(c), go(b), go(a))\n }\n def go(digit: Digit[A]): Digit[A] = digit match {\n case One(a) => One(a)\n case Two(a, b) => Two(b, a)\n case Three(a, b, c) => Three(c, b, a)\n case Four(a, b, c, d) => Four(d, c, b, a)\n }\n def go(digits: Digit[Node[A]]): Digit[Node[A]] = digits match {\n case One(a) => One(go(a))\n case Two(a, b) => Two(go(b), go(a))\n case Three(a, b, c) => Three(go(c), go(b), go(a))\n case Four(a, b, c, d) => Four(go(d), go(c), go(b), go(a))\n }\n def go(tree: Tree[A]): Tree[A] = tree match {\n case NoFinger() => NoFinger()\n case SingleFinger(value) => SingleFinger(go(value))\n case DeepFinger(size, p, m, s) => DeepFinger(size, go(s), go(m), go(p))\n }\n\n seq match {\n case Empty() => Empty()\n case Single(value) => Single(value)\n case Deep(size, p, m, s) => Deep(size, go(s), go(m), go(p))\n }\n}\n\n\n/**\n * Random access\n */\ndef index[A](seq: Seq[A], index: Int): A / Exception[NoSuchElement] = {\n\n // invariant for all internal functions: element is in the sequence\n\n def go(node: Node[A], index: Int): A = node match {\n case Leaf2(a, b) => if (index == 0) a else b\n case Leaf3(a, b, c) => if (index == 0) a else if (index == 1) b else c\n case Node2(_, a, b) =>\n val asize = a.size\n if (index < asize) go(a, index) else go(b, index - asize)\n case Node3(_, a, b, c) =>\n val asize = a.size\n if (index < asize) go(a, index) else {\n val bsize = asize + b.size\n if (index < bsize) go(b, index - asize) else go(c, index - bsize)\n }\n }\n def go(digit: Digit[A], index: Int): A = digit match {\n case One(a) => a\n case Two(a, b) => if (index == 0) a else b\n case Three(a, b, c) => if (index == 0) a else if (index == 1) b else c\n case Four(a, b, c, d) => if (index == 0) a else if (index == 1) b else if (index == 2) c else d\n }\n def go(digits: Digit[Node[A]], index: Int): A = digits match {\n case One(a) => go(a, index)\n case Two(a, b) =>\n val asize = a.size\n if (index < asize) go(a, index) else go(b, index - asize)\n case Three(a, b, c) =>\n val asize = a.size\n if (index < asize) go(a, index) else {\n val bsize = asize + b.size\n if (index < bsize) go(b, index - asize) else {\n go(c, index - bsize)\n }\n }\n case Four(a, b, c, d) =>\n val asize = a.size\n if (index < asize) go(a, index) else {\n val bsize = asize + b.size\n if (index < bsize) go(b, index - asize) else {\n val csize = bsize + c.size\n if (index < csize) go(c, index - bsize) else {\n go(d, index - csize)\n }\n }\n }\n }\n def go(tree: Tree[A], index: Int): A = tree match {\n case NoFinger() => <{ "Cannot happen!" }>\n case SingleFinger(value) => go(value, index)\n case DeepFinger(_, p, m, s) =>\n val psize = p.sizeDeep\n if (index < psize) { go(p, index) } else {\n val msize = psize + m.size\n if (index < msize) { go(m, index - psize) }\n else { go(s, index - msize) }\n }\n }\n\n if (index >= seq.size) raise(NoSuchElement(), "...")\n else seq match {\n case Empty() => <{ "Cannot happen!" }>\n case Single(v) => v // has to be the right one due to the check above\n case Deep(_, p, m, s) =>\n val psize = p.size\n if (index < psize) { go(p, index) } else {\n val msize = psize + m.size\n if (index < msize) { go(m, index - psize) }\n else { go(s, index - msize) }\n }\n }\n}\n\n/**\n * Random access\n */\ndef update[A](seq: Seq[A], index: Int, value: A): Seq[A] / Exception[NoSuchElement] = {\n\n // invariant for all internal functions: element is in the sequence\n\n // this is tail-recursive-modulo-context\n def go(node: Node[A], index: Int): Node[A] = node match {\n case Leaf2(a, b) => if (index == 0) Leaf2(value, b) else Leaf2(a, value)\n case Leaf3(a, b, c) => if (index == 0) Leaf3(value, b, c) else if (index == 1) Leaf3(a, value, c) else Leaf3(a, b, value)\n case Node2(size, a, b) =>\n val asize = a.size\n if (index < asize) Node2(size, go(a, index), b) else Node2(size, a, go(b, index - asize))\n case Node3(size, a, b, c) =>\n val asize = a.size\n if (index < asize) Node3(size, go(a, index), b, c) else {\n val bsize = asize + b.size\n if (index < bsize) Node3(size, a, go(b, index - asize), c) else Node3(size, a, b, go(c, index - bsize))\n }\n }\n def go(digit: Digit[A], index: Int): Digit[A] = digit match {\n case One(a) => One(value)\n case Two(a, b) => if (index == 0) Two(value, b) else Two(a, value)\n case Three(a, b, c) => if (index == 0) Three(value, b, c) else if (index == 1) Three(a, value, c) else Three(a, b, value)\n case Four(a, b, c, d) => if (index == 0) Four(value, b, c, d) else if (index == 1) Four(a, value, c, d) else if (index == 2) Four(a, b, value, d) else Four(a, b, c, value)\n }\n def go(digits: Digit[Node[A]], index: Int): Digit[Node[A]] = digits match {\n case One(a) => One(go(a, index))\n case Two(a, b) =>\n val asize = a.size\n if (index < asize) Two(go(a, index), b) else Two(a, go(b, index - asize))\n case Three(a, b, c) =>\n val asize = a.size\n if (index < asize) Three(go(a, index), b, c) else {\n val bsize = asize + b.size\n if (index < bsize) Three(a, go(b, index - asize), c) else {\n Three(a, b, go(c, index - bsize))\n }\n }\n case Four(a, b, c, d) =>\n val asize = a.size\n if (index < asize) Four(go(a, index), b, c, d) else {\n val bsize = asize + b.size\n if (index < bsize) Four(a, go(b, index - asize), c, d) else {\n val csize = bsize + c.size\n if (index < csize) Four(a, b, go(c, index - bsize), d) else {\n Four(a, b, c, go(d, index - csize))\n }\n }\n }\n }\n def go(tree: Tree[A], index: Int): Tree[A] = tree match {\n case NoFinger() => <{ "Cannot happen!" }>\n case SingleFinger(value) => SingleFinger(go(value, index))\n case DeepFinger(size, p, m, s) =>\n val psize = p.sizeDeep\n if (index < psize) { DeepFinger(size, go(p, index), m, s) } else {\n val msize = psize + m.size\n if (index < msize) { DeepFinger(size, p, go(m, index - psize), s) }\n else { DeepFinger(size, p, m, go(s, index - msize)) }\n }\n }\n\n if (index >= seq.size) raise(NoSuchElement(), "...")\n else seq match {\n case Empty() => <{ "Cannot happen!" }>\n case Single(_) => Single(value) // has to be the right one due to the check above\n case Deep(size, p, m, s) =>\n val psize = p.size\n if (index < psize) { Deep(size, go(p, index), m, s) } else {\n val msize = psize + m.size\n if (index < msize) { Deep(size, p, go(m, index - psize), s) }\n else { Deep(size, p, m, go(s, index - msize)) }\n }\n }\n}\n\n\ndef each[A](seq: Seq[A]) { consume: (A) => Unit }: Unit = {\n\n def go(digit: Digit[A]): Unit = digit match {\n case One(a) => consume(a)\n case Two(a, b) => consume(a); consume(b)\n case Three(a, b, c) => consume(a); consume(b); consume(c)\n case Four(a, b, c, d) => consume(a); consume(b); consume(c); consume(d)\n }\n\n def go(node: Node[A]): Unit = node match {\n case Leaf2(a, b) => consume(a); consume(b)\n case Leaf3(a, b, c) => consume(a); consume(b); consume(c)\n case Node2(_, a, b) => go(a); go(b)\n case Node3(_, a, b, c) => go(a); go(b); go(c)\n }\n\n def go(digit: Digit[Node[A]]): Unit = digit match {\n case One(a) => go(a)\n case Two(a, b) => go(a); go(b)\n case Three(a, b, c) => go(a); go(b); go(c)\n case Four(a, b, c, d) => go(a); go(b); go(c); go(d)\n }\n\n def go(tree: Tree[A]): Unit = tree match {\n case NoFinger() => ()\n case SingleFinger(v) => go(v)\n case DeepFinger(_, p, m, s) => go(p); go(m); go(s)\n }\n\n seq match {\n case Empty() => ()\n case Single(v) => consume(v)\n case Deep(_, p, m, s) => go(p); go(m); go(s)\n }\n}\n\ndef each[A](seq: Seq[A]) { f: (A) {Control} => Unit }: Unit = try {\n seq.each { (el) =>\n try { f(el) {inner} } with inner: Control {\n def break() = outer.break()\n def continue() = ()\n }\n }\n} with outer: Control {\n def break() = ()\n def continue() = ()\n}\n\ndef eachReverse[A](seq: Seq[A]) { consume: A => Unit }: Unit = {\n\n def go(digit: Digit[A]): Unit = digit match {\n case One(a) => consume(a)\n case Two(a, b) => consume(b); consume(a)\n case Three(a, b, c) => consume(c); consume(b); consume(a)\n case Four(a, b, c, d) => consume(d); consume(c); consume(b); consume(a)\n }\n\n def go(node: Node[A]): Unit = node match {\n case Leaf2(a, b) => consume(b); consume(a)\n case Leaf3(a, b, c) => consume(c); consume(b); consume(a)\n case Node2(_, a, b) => go(b); go(a)\n case Node3(_, a, b, c) => go(c); go(b); go(a)\n }\n\n def go(digit: Digit[Node[A]]): Unit = digit match {\n case One(a) => go(a)\n case Two(a, b) => go(b); go(a)\n case Three(a, b, c) => go(c); go(b); go(a)\n case Four(a, b, c, d) => go(d); go(c); go(b); go(a)\n }\n\n def go(tree: Tree[A]): Unit = tree match {\n case NoFinger() => ()\n case SingleFinger(v) => go(v)\n case DeepFinger(_, p, m, s) => go(s); go(m); go(p)\n }\n\n seq match {\n case Empty() => ()\n case Single(v) => consume(v)\n case Deep(_, p, m, s) => go(s); go(m); go(p)\n }\n}\n\ndef eachReverse[A](seq: Seq[A]) { f: (A) {Control} => Unit }: Unit = try {\n seq.eachReverse { (el) =>\n try { f(el) {inner} } with inner: Control {\n def break() = outer.break()\n def continue() = ()\n }\n }\n} with outer: Control {\n def break() = ()\n def continue() = ()\n}\n\ndef toList[A](seq: Seq[A]): List[A] = {\n var list: List[A] = Nil()\n seq.eachReverse { el => list = Cons(el, list) }\n list\n}\n\ndef toSeq[A](l: List[A]): Seq[A] = {\n def go(l: List[A], acc: Seq[A]): Seq[A] = l match {\n case Nil() => acc\n case Cons(head, tail) => go(tail, consRight(acc, head))\n }\n go(l, Empty())\n}\n\n\nrecord Split[A, R](prefix: R, element: A, suffix: R)\n\ndef splitAt[A](seq: Seq[A], index: Int): (Seq[A], Seq[A]) / Exception[IndexOutOfBounds] = {\n\n // invariant index is in digit\n def go(digit: Digit[A], index: Int): Split[A, List[A]] = digit match {\n case One(a) => Split([], a, [])\n case Two(a, b) => if (index == 0) Split([], a, [b]) else Split([a], b, [])\n case Three(a, b, c) =>\n if (index == 0) Split([], a, [b, c])\n else if (index == 1) Split([a], b, [c])\n else Split([a, b], c, [])\n case Four(a, b, c, d) =>\n if (index == 0) Split([], a, [b, c, d])\n else if (index == 1) Split([a], b, [c, d])\n else if (index == 2) Split([a, b], c, [d])\n else Split([a, b, c], d, [])\n }\n\n def go(digit: Digit[Node[A]], index: Int): Split[Node[A], List[Node[A]]] = digit match {\n case One(a) => Split([], a, [])\n case Two(a, b) =>\n val asize = a.size\n if (index < asize) Split([], a, [b]) else Split([a], b, [])\n case Three(a, b, c) =>\n val asize = a.size\n if (index < asize) Split([], a, [b, c])\n else {\n val bsize = asize + b.size\n if (index < bsize) Split([a], b, [c])\n else Split([a, b], c, [])\n }\n case Four(a, b, c, d) =>\n val asize = a.size\n if (index < asize) Split([], a, [b, c, d])\n else {\n val bsize = asize + b.size\n if (index < bsize) Split([a], b, [c, d])\n else {\n val csize = bsize + c.size\n if (index < csize) Split([a, b], c, [d])\n else Split([a, b, c], d, [])\n }\n }\n }\n\n def left(p: List[Node[A]], m: Tree[A], s: Digit[Node[A]]): Tree[A] = p match {\n case Nil() => m.unconsFinger match {\n case TreeIsEmpty() => s.toTree\n case TreeView(a, m2) => deepFinger(a.toDigitNode, m2, s)\n }\n case _ => deepFinger(p.toDigitNode, m, s)\n }\n\n def left(p: List[A], m: Tree[A], s: Digit[A]): Seq[A] = p match {\n case Nil() => m.unconsFinger match {\n case TreeIsEmpty() => s.toSeq\n case TreeView(a, m2) => deep(a.toDigit, m2, s)\n }\n case _ => deep(p.toDigitNode, m, s)\n }\n def right(p: Digit[A], m: Tree[A], s: List[A]): Seq[A] = s match {\n case Nil() => m.unconsRightFinger match {\n case TreeIsEmpty() => p.toSeq\n case TreeView(a, m2) => deep(p, m2, a.toDigit)\n }\n case _ => deep(p, m, s.toDigitNode)\n }\n\n\n def right(p: Digit[Node[A]], m: Tree[A], s: List[Node[A]]): Tree[A] = s match {\n case Nil() => m.unconsRightFinger match {\n case TreeIsEmpty() => p.toTree\n case TreeView(a, m2) => deepFinger(p, m2, a.toDigitNode)\n }\n case _ => deepFinger(p, m, s.toDigitNode)\n }\n\n def go(tree: Tree[A], index: Int): Split[Node[A], Tree[A]] = tree match {\n case NoFinger() => println("Cannot happen!"); <{ "Cannot happen!" }>\n case SingleFinger(value) => Split(NoFinger(), value, NoFinger())\n case DeepFinger(size, p, m, s) =>\n val psize = p.sizeDeep;\n // It is in the prefix\n if (index < psize) {\n val Split(pp, v, ps) = go(p, index);\n Split(pp.toTree, v, left(ps, m, s))\n } else {\n val msize = psize + m.size\n // It is somewhere in the spine\n if (index < msize) {\n val Split(mp, v, ms) = go(m, index - psize);\n val mpsize = psize + mp.size;\n val Split(vp, w, vs) = go(v.toDigitNode, index - mpsize);\n Split(right(p, mp, vp), w, left(vs, ms, s))\n // It is somewhere in the suffix\n } else {\n val Split(sp, v, ss) = go(s, index - msize)\n Split(right(p, m, sp), v, ss.toTree)\n }\n }\n }\n\n if (index < 0) {\n do raise(IndexOutOfBounds(), "...")\n } else if (index >= seq.size) {\n (seq, Empty())\n } else seq match {\n case Empty() => (Empty(), Empty())\n case Single(v) => (Empty(), seq)\n case Deep(size, p, m, s) =>\n val psize = p.size;\n // It is in the prefix\n if (index < psize) {\n val Split(pp, v, ps) = go(p, index);\n (toSeq(pp), left(Cons(v, ps), m, s))\n } else {\n val msize = psize + m.size\n // It is somewhere in the spine\n if (index < msize) {\n val Split(mp, v, ms) = go(m, index - psize);\n val mpsize = psize + mp.size;\n val Split(vp, w, vs) = go(v.toDigit, index - mpsize);\n (right(p, mp, vp), left(Cons(w, vs), ms, s))\n // It is somewhere in the suffix\n } else {\n val Split(sp, v, ss) = go(s, index - msize);\n (right(p, m, sp), Cons(v, ss).toSeq)\n }\n }\n }\n}\n\n\ndef insert[A](seq: Seq[A], value: A, index: Int): Seq[A] / Exception[IndexOutOfBounds] =\n splitAt(seq, index) match {\n case (prefix, suffix) => prefix.concat(cons(value, suffix))\n }\n\n\n\n// Internal conversions\n// --------------------\n\ndef toTree[A](digit: Digit[Node[A]]): Tree[A] = digit match {\n case One(a) => SingleFinger(a)\n case Two(a, b) => deepFinger(One(a), NoFinger(), One(b))\n case Three(a, b, c) => deepFinger(Two(a, b), NoFinger(), One(c))\n case Four(a, b, c, d) => deepFinger(Three(a, b, c), NoFinger(), One(d))\n}\n\ndef toTree[A](digit: List[Node[A]]): Tree[A] = digit match {\n case Nil() => NoFinger()\n case Cons(a, Nil()) => SingleFinger(a)\n case Cons(a, Cons(b, Nil())) => deepFinger(One(a), NoFinger(), One(b))\n case Cons(a, Cons(b, Cons(c, Nil()))) => deepFinger(Two(a, b), NoFinger(), One(c))\n case Cons(a, Cons(b, Cons(c, Cons(d, Nil())))) => deepFinger(Three(a, b, c), NoFinger(), One(d))\n case _ => <>\n}\n\ndef toSeq[A](d: Digit[A]): Seq[A] = d match {\n case One(a) => Single(a)\n case Two(a, b) => Deep(2, One(a), NoFinger(), One(b))\n case Three(a, b, c) => Deep(3, Two(a, b), NoFinger(), One(c))\n case Four(a, b, c, d) => Deep(4, Three(a, b, c), NoFinger(), One(d))\n}\n\ndef toDigitNode[A](n: Node[A]): Digit[Node[A]] = n match {\n case Node2(_, a, b) => Two(a, b)\n case Node3(_, a, b, c) => Three(a, b, c)\n case _ => <{ "Should not happen" }>\n}\n\ndef toDigitNode[A](n: List[A]): Digit[A] = n match {\n case Cons(a, Nil()) => One(a)\n case Cons(a, Cons(b, Nil())) => Two(a, b)\n case Cons(a, Cons(b, Cons(c, Nil()))) => Three(a, b, c)\n case Cons(a, Cons(b, Cons(c, Cons(d, Nil())))) => Four(a, b, c, d)\n case _ => <{ "Should not happen" }>\n}\n\ndef toDigit[A](n: Node[A]): Digit[A] = n match {\n case Leaf2(a, b) => Two(a, b)\n case Leaf3(a, b, c) => Three(a, b, c)\n case _ => <{ "Should not happen" }>\n}\n\ndef toList[A](digit: Digit[A]): List[A] = digit match {\n case One(a) => Cons(a, Nil())\n case Two(a, b) => Cons(a, Cons(b, Nil()))\n case Three(a, b, c) => Cons(a, Cons(b, Cons(c, Nil())))\n case Four(a, b, c, d) => Cons(a, Cons(b, Cons(c, Cons(d, Nil()))))\n}\n\ndef map[A, B](seq: Seq[A]) { f: A => B }: Seq[B] = {\n var result: Seq[B] = Empty()\n seq.each { a => result = result.consRight(f(a)) }\n result\n}\n\ndef map[A, B](seq: Seq[A]) { f: (A) {Control} => B }: Seq[B] = {\n var result: Seq[B] = Empty()\n seq.each { (a) {label} => result = result.consRight(f(a) {label}) }\n result\n}\n\n\n// TODO iterator interface\n//\n\n// interface Iterator[A] {\n// def value(): Option[A]\n// def next(): Unit\n// }\n\n// interface Generator[A] {\n// def yield(value: A): Unit\n// }\n\n// 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qn(n,t,e,r){if(e instanceof JJ){var i=e.kj,o=e.em,s=e.sp,a=e.lj;return new HK(new JJ(i,o,s,a,n=aP(e=e.jj,new GK(_h().r,n,t,r))))}return new HK(e instanceof WK?new WK(i=e.Ah,o=e.qp,s=e.Wg,n=aP(e=e.Vg,new GK(a=_h().r,n,t,r))):new WK(e=e instanceof YJ?new kJ(e.Gk):new SK(e),i=_h().r,o=_h().r,new a1(n=new GK(s=_h().r,n,t,r),t=_h().r)))}function Ln(n){var t=En(n).Ia,e=Sm();(null===e?null===t:e.d(t))?zn(n,Sm()):Nn(n)||(t=n.ul.V(n.db-1|0).Ia,e=km(),(null===t?null===e:t.d(e))||Vt(n,"Expected ;"))}function Rn(n){var t=En(n).aa;if(Dn(n,Nm())){zn(n,Nm());var e=Tn(n);e=new UK(e),zn(n,Tm())}else Dn(n,D$())?(zn(n,D$()),e=new HK(e=rt(n))):e=new HK(e=rt(n));var r=1+n.da.$|0;return Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),e}function Mn(n){var t=new T1,e=jt(n);for(q1(t,e);Dn(n,Fm());)zn(n,Fm()),q1(t,e=jt(n));return Ef(n=t.ua(),"","/","")}function Bn(n){var t=En(n).Ia,e=r$();return!!((null===e?null===t:e.d(t))||((null===(e=y$())?null===t:e.d(t))||((null===(e=u$())?null===t:e.d(t))||((null===(e=c$())?null===t:e.d(t))||(null===(e=z$())?null===t:e.d(t))))))||(((null===(e=m$())?null===t:e.d(t))||((null===(e=c$())?null===t:e.d(t))||((null===(e=f$())?null===t:e.d(t))||((null===(e=u$())?null===t:e.d(t))||(null===(e=k$())?null===t:e.d(t))))))&&Vt(n,"Only supported on the toplevel: "+(t=En(n).Ia).k()+" declaration."),!1)}function On(n){var t=En(n).aa,e=En(n).Ia,r=r$();if(null===r?null===e:r.d(e))var i=Pn(n);else(null===(r=y$())?null===e:r.d(e))?i=Un(n):(null===(r=u$())?null===e:r.d(e))?i=Kn(n):(null===(r=c$())?null===e:r.d(e))?i=Vn(n):(null===(r=z$())?null===e:r.d(e))?i=Gn(n):Vt(n,"Expected definition");return e=1+n.da.$|0,Cc(n.A,i,Mc(n.C,t)),zc(n.A,i,Mc(n.C,e)),i}function Fn(n){for(var t=En(n).aa,e=new T1;Bn(n);){var r=On(n);q1(e,r)}return e=e.ua(),r=1+n.da.$|0,Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),e}function Pn(n){var t=En(n).aa;zn(n,r$());var e=At(n),r=Xn(n);return zn(n,Dm()),e=new MJ(e,r,Rn(n)),r=1+n.da.$|0,Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),e}function Un(n){var t=En(n).aa;zn(n,y$());var e=At(n);if(Dn(n,jm())||Dn(n,Dm())){var r=En(n).aa;if(Dn(n,jm())){var i=et(n);i=new LF(i)}else i=qF();var o=1+n.da.$|0;Cc(n.A,i,Mc(n.C,r)),zc(n.A,i,Mc(n.C,o)),r=i,zn(n,Dm()),e=new EJ(e,r,i=rt(n))}else{if(null===(r=Tt(n)))throw new pq(r);o=r.ge,i=r.Hd,r=r.Dc;var s=Zn(n);zn(n,Dm()),e=new zJ(e,r,o,i,s,Rn(n))}return r=1+n.da.$|0,Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),e}function Kn(n){var t=En(n).aa;zn(n,u$());var e=At(n),r=zt(n);e=(r=new FE(n,e,r)).Jb,r=r.Kb;var i=En(n).Ia,o=Dm();if(null===o?null===i:o.d(i))zn(n,Dm()),e=new RJ(e,r,i=gn(n,!0));else{for(zn(n,Nm()),i=new T1;!Dn(n,Tm());){var s=o=n,a=En(s).aa,u=At(s),c=zt(s);u=new CK(u,c,Rt(s)),c=1+s.da.$|0,Cc(s.A,u,Mc(s.C,a)),zc(s.A,u,Mc(s.C,c)),s=u,Ln(o),q1(i,s)}e=new xJ(e,r,i=i.ua()),zn(n,Tm())}return r=1+n.da.$|0,Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),e}function Vn(n){var t=En(n).aa;zn(n,c$());var e=At(n),r=zt(n);return zn(n,Dm()),e=new DJ(e,r,Kt(n)),r=1+n.da.$|0,Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),e}function Hn(n){var t=En(n).aa,e=At(n),r=Tt(n);e=new FE(n,e,r);var i=(e=new FE(n,e,r=nt(n))).Jb;if(null===i||(r=i.Kb,i=i.Jb,null===r))throw new pq(e);return e=new FK(i,r.Dc,r.ge,r.Hd,e.Kb),r=1+n.da.$|0,Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),e}function Gn(n){var t=En(n).aa;zn(n,z$());var e=At(n);if(Dn(n,Nm())){zn(n,Nm());var r=Fn(n);e=new TJ(e,r),zn(n,Tm())}else Ln(n),e=new TJ(e,r=Fn(n));return r=1+n.da.$|0,Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),e}function Jn(n){var t=En(n).aa,e=n.db;try{var r=new LF(n.Rk())}catch(t){if(!((r=t instanceof my?t:new oH(t))instanceof kC))throw r instanceof oH?r.Wc:r;n.db=e,r=qF()}return e=r.f()?H$():r.v(),r=1+n.da.$|0,Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),e}function Wn(n){var t=En(n).aa;zn(n,m$());var e,r=Jn(n),i=In(n).Ia;return i instanceof LB?e=new IJ(r,"",new LF(i.vn),new lO("")):Vt(n,"Expected string literal."),r=1+n.da.$|0,Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),e}function Qn(n){var t=En(n).aa;n:{zn(n,m$());var e=En(n).aa;if(Dn(n,Nm())||Dn(n,N$())||It(n)){var r=En(n).aa;if(Dn(n,Nm()))var i=Ft(n);else Dn(n,N$())?(zn(n,N$()),i=new fN(i=_h().r)):(_h(),i=xl(Al(),new(U(dO).j)([Dt(n)])),i=new fN(i=dZ(h1(),i)));var o=1+n.da.$|0;Cc(n.A,i,Mc(n.C,r)),zc(n.A,i,Mc(n.C,o)),r=i}else _h(),Al(),_h(),r=xl(Al(),new(U(DF).j)(["effekt"])),r=dZ(h1(),r),r=xl(0,new(U(dO).j)([new wO(r,"io")])),r=new fN(r=dZ(h1(),r));i=1+n.da.$|0,Cc(n.A,r,Mc(n.C,e)),zc(n.A,r,Mc(n.C,i)),e=r,zn(n,y$()),e=new FE(n,e,r=At(n)),e=new FE(n,e,r=Tt(n)),r=nt(n),zn(n,Dm());var s=new FE(n,e,r);if(null!==(e=s.Jb)){r=e.Jb;var a=e.Kb;if(null!==r&&(e=r.Jb,r=r.Kb,null!==a)){i=a.Dc,o=a.ge,a=a.Hd,s=s.Kb;for(var u=new T1;dn(n);){var c=n,f=En(c).aa;if(En(c).Ia instanceof TB){var h=$n(c,c.db,1).Ia,l=Nm();(null===l?null===h:l.d(h))?(h=c.Rk(),zn(c,Nm()),l=Tn(c),zn(c,Tm()),h=new rO(h,l)):h=new iO(h=Jn(c),l=Yn(c))}else h=new iO(h=Jn(c),l=Yn(c));l=1+c.da.$|0,Cc(c.A,h,Mc(c.C,f)),zc(c.A,h,Mc(c.C,l)),q1(u,h)}e=new AJ(e,r,i,o,a,s,u=u.ua());break n}}throw new pq(s)}return r=1+n.da.$|0,Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),e}function Yn(n){for(var t,e=En(n).aa,r=_n(n),i=new T1;Dn(n,zm());){var o=n;zn(o,zm()),t=rt(o),zn(o,Tm()),o=_n(o),q1(i,t=bq(new gq,t,o))}if(i=i.ua(),t=Cb(),null===(t=i.fG(t.zj)))throw new pq(t);return i=t.G(),t=t.H(),r=new PE(new a1(r,i),t),i=1+n.da.$|0,Cc(n.A,r,Mc(n.C,e)),zc(n.A,r,Mc(n.C,i)),r}function _n(n){var t,e=En(n).aa,r=In(n).Ia;return r instanceof LB?t=r.vn:Vt(n,"Expected string literal."),r=1+n.da.$|0,Cc(n.A,t,Mc(n.C,e)),zc(n.A,t,Mc(n.C,r)),t}function Xn(n){var t=En(n).aa;if(Dn(n,jm())){var e=tt(n);e=new LF(e)}else e=qF();var r=1+n.da.$|0;return Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),e}function Zn(n){var t=En(n).aa;if(Dn(n,jm())){zn(n,jm());var e=Pt(n);e=new LF(e)}else e=qF();var r=1+n.da.$|0;return Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),e}function nt(n){return Dn(n,jm())?(zn(n,jm()),Pt(n)):Vt(n,"Expected return type annotation")}function tt(n){return Dn(n,jm())?(zn(n,jm()),gn(n,!0)):Vt(n,"Expected a type annotation")}function et(n){return Dn(n,jm())?(zn(n,jm()),mn(n,!0)):Vt(n,"Expected a type annotation")}function rt(n){En(n);for(var t=En(n).aa,e=En(n).aa,r=xl(Al(),new(U(Rz).j)([Qm()])),i=En(n).aa,o=lt(n);;){var s=En(n).Ia;if(!US(r,s))break;var a=In(n).Ia;a=vn(n,o,a,s=lt(n)),Tc(n.A,o,s,a),o=a}for(r=o,o=1+n.da.$|0,Cc(n.A,r,Mc(n.C,i)),zc(n.A,r,Mc(n.C,o)),r instanceof YJ?(i=r.Gk,Dn(n,Dm())?(zn(n,Dm()),i=new HJ(i,r=rt(n))):i=r):i=r,r=1+n.da.$|0,Cc(n.A,i,Mc(n.C,e)),zc(n.A,i,Mc(n.C,r)),e=i;Dn(n,v$());){for(zn(n,v$()),zn(i=n,Nm()),r=i,o=new T1;Dn(r,p$());)q1(o,s=ut(r));r=o.ua(),zn(i,Tm()),i=r,Dn(n,s$())?(zn(n,s$()),r=new LF(r=Rn(n))):r=qF(),e=new XK(e,i,r)}return i=1+n.da.$|0,Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,i)),e}function it(n){var t=En(n).aa;zn(n,j$());var e=st(n);e=new ZK(e);var r=1+n.da.$|0;return Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),e}function ot(n){var t=En(n).aa;zn(n,l$());var e=n.db;try{var r=At(n);zn(n,jm());var i=new LF(r)}catch(t){if(!((i=t instanceof my?t:new oH(t))instanceof kC))throw i instanceof oH?i.Wc:i;n.db=e,i=qF()}return e=(i=new FE(n,i,e=st(n))).Jb,i=i.Kb,e.f()?e=qF():e=new LF(new PJ(e=e.v(),new LF(i.yh))),i=new NK(e,i),e=1+n.da.$|0,Cc(n.A,i,Mc(n.C,t)),zc(n.A,i,Mc(n.C,e)),i}function st(n){var t=En(n).aa,e=n.db;try{var r=Ct(n);zn(n,Nm());var i=_h().r;zn(n,Tm());var o=new LF(new TK(r,i))}catch(t){if(!((o=t instanceof my?t:new oH(t))instanceof kC))throw o instanceof oH?o.Wc:o;n.db=e,o=qF()}if(o.f()){e=n.db;try{var s=Ct(n);zn(n,Nm()),Dn(n,y$())||Vt(n,"Expected at least one operation definition to implement this interface.");var a=new LF(s)}catch(t){if(!((a=t instanceof my?t:new oH(t))instanceof kC))throw a instanceof oH?a.Wc:a;n.db=e,a=qF()}if(a.f())a=qF();else{for(a=a.v(),s=new T1;Dn(n,y$());){o=En(e=n).aa;n:{zn(e,y$()),r=new FE(e,r=Dt(e),i=qt(e)),r=new FE(e,r,i=Zn(e)),zn(e,Dm());var u=new FE(e,r,i=Rn(e)),c=u.Jb;if(null!==c&&null!==(r=c.Jb)){var f=r.Kb;if(r=r.Jb,null!==f){i=f.Dc;var h=f.ge;r=new BK(r,i,h,f=f.Hd,c=c.Kb,u=u.Kb,at(e));break n}}throw new pq(u)}i=1+e.da.$|0,Cc(e.A,r,Mc(e.C,o)),zc(e.A,r,Mc(e.C,i)),q1(s,r)}a=new TK(a,s=s.ua()),zn(n,Tm()),a=new LF(a)}}else a=o;if(a.f()){if(a=new FE(n,a=Dt(n),s=mt(n)),a=new FE(n,a,s=at(n)),s=(e=new FE(n,a,s=kt(n))).Jb,r=e.Kb,null===s||(null===(o=s.Jb)||(a=o.Jb,i=o.Kb,s=s.Kb,null===r)))throw new pq(e);e=r.Ak,o=r.mi,r=r.zh,h=new wO(h=_h().r,a.Yd),Nc(n.A,a,h),i=new ZW(a,i),Nc(n.A,a,i),s=new BK(h,u=_h().r,e,o,f=qF(),r,s),Tc(n.A,a,r,s),_h(),a=xl(Al(),new(U(OK).j)([s])),a=new TK(i,a=dZ(h1(),a))}else a=a.v();return s=1+n.da.$|0,Cc(n.A,a,Mc(n.C,t)),zc(n.A,a,Mc(n.C,s)),a}function at(n){var t=En(n).aa,e=new lO("resume"),r=1+n.da.$|0;return Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),e}function ut(n){var t=En(n).aa;zn(n,p$());for(var e=ht(n),r=new T1;Dn(n,S$());){var i=n;zn(i,S$()),q1(r,i=ft(i))}return r=r.ua(),zn(n,Pm()),e=new vN(e,r,i=Tn(n)),r=1+n.da.$|0,Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),e}function ct(n){var t=En(n).aa,e=new T1,r=ft(n);for(q1(e,r);Dn(n,S$());)zn(n,S$()),q1(e,r=ft(n));return e=e.ua(),r=1+n.da.$|0,Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),e}function ft(n){var t=En(n).aa,e=rt(n);if(Dn(n,C$())){zn(n,C$());var r=ht(n);r=new LF(r)}else r=qF();r=(e=new FE(n,e,r)).Kb;var i=e.Jb;if(r instanceof LF)e=new LK(i,r.oa);else{if(r=e.Jb,qF()!==e.Kb)throw new pq(e);e=new qK(r)}return r=1+n.da.$|0,Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),e}function ht(n){var t=En(n).aa;n:{var e=En(n).Ia,r=L$().FM;if(null===r?null===e:r.d(e)){jn(n);var i=new RK}else{if(It(n)){if(i=Dt(n),Dn(n,qm())){if(zn(n,qm()),Dn(n,Lm()))zn(n,Lm()),e=_h().r;else{for(q1(e=new T1,r=ht(n));Dn(n,Bm());)zn(n,Bm()),q1(e,r=ht(n));zn(n,Lm()),e=e.ua()}i=new FJ(i,e);break n}if(null!==i){e=i.rk,r=i.Yd;var o=_h().r;if(null===o?null===e:o.d(e)){i=new OJ(new lO(r));break n}Vt(n,"Cannot use qualified names to bind a pattern variable")}throw new pq(i)}if(It(n))i=new OJ(i=At(n));else if(xt(n))i=new MK(i=Et(n));else if(null===(r=qm())?null===e:r.d(e)){for(zn(n,qm()),q1(i=new T1,e=ht(n));Dn(n,Bm());)zn(n,Bm()),q1(i,e=ht(n));i=i.ua(),zn(n,Lm()),i instanceof a1&&(e=i.h,(null===(r=_h().r)?null===e:r.d(e))&&Vt(n,"Pattern matching on tuples requires more than one element")),_h(),e=xl(Al(),new(U(DF).j)(["effekt"])),e=dZ(h1(),e),r="Tuple"+i.s(),i=new FJ(new wO(e,r),i)}else Vt(n,"Expected pattern")}}return e=1+n.da.$|0,Cc(n.A,i,Mc(n.C,t)),zc(n.A,i,Mc(n.C,e)),i}function lt(n){for(var t=xl(Al(),new(U(Rz).j)([Ym()])),e=En(n).aa,r=pt(n);;){var i=En(n).Ia;if(!US(t,i))break;var o=In(n).Ia;o=vn(n,r,o,i=pt(n)),Tc(n.A,r,i,o),r=o}return t=r,r=1+n.da.$|0,Cc(n.A,t,Mc(n.C,e)),zc(n.A,t,Mc(n.C,r)),t}function pt(n){for(var t=xl(Al(),new(U(Rz).j)([Am(),Im()])),e=En(n).aa,r=wt(n);;){var i=En(n).Ia;if(!US(t,i))break;var o=In(n).Ia;o=vn(n,r,o,i=wt(n)),Tc(n.A,r,i,o),r=o}return t=r,r=1+n.da.$|0,Cc(n.A,t,Mc(n.C,e)),zc(n.A,t,Mc(n.C,r)),t}function wt(n){for(var t=xl(Al(),new(U(Rz).j)([Vm(),Gm(),Km(),Hm()])),e=En(n).aa,r=dt(n);;){var i=En(n).Ia;if(!US(t,i))break;var o=In(n).Ia;o=vn(n,r,o,i=dt(n)),Tc(n.A,r,i,o),r=o}return t=r,r=1+n.da.$|0,Cc(n.A,t,Mc(n.C,e)),zc(n.A,t,Mc(n.C,r)),t}function dt(n){for(var t=xl(Al(),new(U(Rz).j)([Xm(),_m(),Zm()])),e=En(n).aa,r=vt(n);;){var i=En(n).Ia;if(!US(t,i))break;var o=In(n).Ia;o=vn(n,r,o,i=vt(n)),Tc(n.A,r,i,o),r=o}return t=r,r=1+n.da.$|0,Cc(n.A,t,Mc(n.C,e)),zc(n.A,t,Mc(n.C,r)),t}function vt(n){for(var t=xl(Al(),new(U(Rz).j)([n$(),Fm()])),e=En(n).aa,r=yt(n);;){var i=En(n).Ia;if(!US(t,i))break;var o=In(n).Ia;o=vn(n,r,o,i=yt(n)),Tc(n.A,r,i,o),r=o}return t=r,r=1+n.da.$|0,Cc(n.A,t,Mc(n.C,e)),zc(n.A,t,Mc(n.C,r)),t}function yt(n){for(var t=En(n).aa,e=function(n){var t=En(n).Ia,e=o$();if(null===e?null===t:e.d(t)){var r=En(n).aa;zn(n,o$()),zn(n,qm());var i=ct(n);zn(n,Lm());var o=Rn(n);if(Dn(n,s$())){zn(n,s$());var s=Rn(n)}else{var a=Xi().Kk;s=new HK(new _K(void 0,a))}var u=new YK(i,o,s),c=1+n.da.$|0;return Cc(n.A,u,Mc(n.C,r)),zc(n.A,u,Mc(n.C,c)),u}var f=a$();if(null===f?null===t:f.d(t)){var h=En(n).aa;zn(n,a$()),zn(n,qm());var l=ct(n);zn(n,Lm());var p=Rn(n);if(Dn(n,s$())){zn(n,s$());var w=new LF(Rn(n))}else w=qF();var d=new eV(l,p,w),v=1+n.da.$|0;return Cc(n.A,d,Mc(n.C,h)),zc(n.A,d,Mc(n.C,v)),d}var y=h$();if(null===y?null===t:y.d(t)){var b=En(n).aa;zn(n,h$());var g=Rn(n),m=new T1,$=ot(n);for(q1(m,$);Dn(n,l$());){var k=ot(n);q1(m,k)}var x=m.ua(),E=new FE(n,g,x),D=new nV(E.Jb,E.Kb),A=1+n.da.$|0;return Cc(n.A,D,Mc(n.C,b)),zc(n.A,D,Mc(n.C,A)),D}var I=A$();if(null===I?null===t:I.d(t)){var j=En(n).aa;zn(n,A$());var S=At(n),C=Rn(n),z=new WJ(S,C),N=1+n.da.$|0;return Cc(n.A,z,Mc(n.C,j)),zc(n.A,z,Mc(n.C,N)),z}var T=x$();if(null===T?null===t:T.d(t)){var q=En(n).aa;zn(n,x$());var L=n.db;try{var R=new LF(Ft(n))}catch(t){var M=t instanceof my?t:new oH(t);if(!(M instanceof kC))throw M instanceof oH?M.Wc:M;n.db=L,R=qF()}if(Dn(n,Nm()))var B=kt(n);else if(Dn(n,j$()))B=it(n);else{var O=Dt(n);B=new YJ(O)}var F=new JK(R,B),P=1+n.da.$|0;return Cc(n.A,F,Mc(n.C,q)),zc(n.A,F,Mc(n.C,P)),F}var K=E$();if(null===K?null===t:K.d(t)){var V=En(n).aa;zn(n,E$());var H=new tV(rt(n)),G=1+n.da.$|0;return Cc(n.A,H,Mc(n.C,V)),zc(n.A,H,Mc(n.C,G)),H}var J=d$();if(null===J?null===t:J.d(t)){var W=En(n).aa;zn(n,d$());var Q=qF(),Y=_h().r,_=Rt(n),X=_h().r;zn(n,Nm());var Z=Tn(n);zn(n,Tm());var nn=new JK(Q,new GK(Y,_,X,Z)),tn=1+n.da.$|0;return Cc(n.A,nn,Mc(n.C,W)),zc(n.A,nn,Mc(n.C,tn)),nn}var en=j$();if(null===en?null===t:en.d(t))return it(n);var rn=w$();if(null===rn?null===t:rn.d(t)){var on=En(n).aa;zn(n,w$());var sn=Dt(n),an=gt(n),un=new FE(n,sn,an),cn=un.Kb,fn=un.Jb;if(null===cn)throw new pq(un);var hn=cn.Dc,ln=cn.ge,pn=cn.Hd,wn=new GJ(qF(),fn,hn,ln,pn),dn=1+n.da.$|0;return Cc(n.A,wn,Mc(n.C,on)),zc(n.A,wn,Mc(n.C,dn)),wn}if(xt(n))return Et(n);if(It(n)){var vn=En(n).aa,yn=new YJ(Dt(n)),bn=1+n.da.$|0;return Cc(n.A,yn,Mc(n.C,vn)),zc(n.A,yn,Mc(n.C,bn)),yn}if(Dn(n,Um())||Dn(n,Jm())){var gn=En(n).Ia,mn=Um();if(null===mn?null===gn:mn.d(gn)){zn(n,Um());var $n=new QK(new HK(new _K(void 0,Xi().Kk)))}else{var kn=Jm();if(null===kn?null===gn:kn.d(gn)){zn(n,Jm());var xn=new QK(Tn(n));zn(n,Wm()),$n=xn}else Vt(n,"Expected hole"),$n=void 0}return $n}if(Dn(n,qm())){n:{zn(n,qm());var An=new T1,In=rt(n);for(q1(An,In);Dn(n,Bm());){zn(n,Bm());var jn=rt(n);q1(An,jn)}var Sn=An.ua();if(zn(n,Lm()),Sn instanceof a1){var Cn=Sn.h,Nn=Sn.Ec,qn=_h().r;if(null===qn?null===Cn:qn.d(Cn)){var Ln=Nn;break n}}_h();var Mn=xl(Al(),new(U(DF).j)(["effekt"])),Bn=dZ(h1(),Mn),On="Tuple"+Sn.s(),Fn=new kJ(new wO(Bn,On)),Pn=_h().r,Un=_h().r;Ln=new WK(Fn,Pn,Sn,Un)}return Ln}var Kn=En(n).Ia,Vn=Rm();if(null===Vn?null===Kn:Vn.d(Kn)){var Hn=En(n).aa;if(zn(n,Rm()),Dn(n,Mm())){zn(n,Mm());var Gn=_h().r}else{var Jn=new T1,Wn=rt(n);for(q1(Jn,Wn);Dn(n,Bm());){zn(n,Bm());var Qn=rt(n);q1(Jn,Qn)}zn(n,Mm()),Gn=Jn.ua()}_h();for(var Yn=kl(Al(),new(U(TE).j)([])),_n=new kJ(new wO(dZ(h1(),Yn),"Nil")),Xn=_h().r,Zn=_h().r,nt=_h().r,tt=new WK(_n,Xn,Zn,nt),et=gZ(Gn);!et.f();){var st=et.b(),at=tt;_h();var ut=kl(Al(),new(U(TE).j)([])),ft=new kJ(new wO(dZ(h1(),ut),"Cons")),ht=_h().r;_h();var lt=xl(Al(),new(U(EO).j)([st,at])),pt=dZ(h1(),lt),wt=_h().r;tt=new WK(ft,ht,pt,wt),et=et.c()}var dt=tt,vt=1+n.da.$|0;return Cc(n.A,dt,Mc(n.C,Hn)),zc(n.A,dt,Mc(n.C,vt)),dt}Vt(n,"Expected variables, literals, tuples, lists, holes or group")}(n);Dn(n,Om())||bt(n);){var r=En(n).Ia,i=Om();if(null===i?null===r:i.d(r))if(zn(n,Om()),r=Dt(n),bt(n)){if(null===(i=gt(n)))throw new pq(i);var o=i.ge,s=i.Hd;e=new JJ(e,r,i=i.Dc,o,s)}else e=new JJ(e,r,i=_h().r,s=_h().r,o=_h().r);else if(bt(n)){if(r=(r=e)instanceof YJ?new kJ(r.Gk):new SK(r),null===(e=gt(n)))throw new pq(e);s=e.ge,i=e.Hd,e=new WK(r,e=e.Dc,s,i)}}return r=e,e=1+n.da.$|0,Cc(n.A,r,Mc(n.C,t)),zc(n.A,r,Mc(n.C,e)),r}function bt(n){var t=n.ul.V(n.db-1|0).Ia,e=km();return!(null===t?null===e:t.d(e))&&(Dn(n,qm())||Dn(n,Rm())||Dn(n,Nm()))}function gt(n){bt(n)||Vt(n,"Expected at least one argument section (types, values, or blocks)");var t=mt(n);if(Dn(n,qm())){var e=En(n).aa;if(zn(n,qm()),Dn(n,Lm())){zn(n,Lm());var r=_h().r}else{r=new T1;var i=rt(n);for(q1(r,i);Dn(n,Bm());)zn(n,Bm()),q1(r,i=rt(n));zn(n,Lm()),r=r.ua()}i=1+n.da.$|0,Cc(n.A,r,Mc(n.C,e)),zc(n.A,r,Mc(n.C,i)),e=r}else e=_h().r;if(Dn(n,Nm())){r=En(n).aa,i=new T1;var o=$t(n);for(q1(i,o);Dn(n,Nm());)q1(i,o=$t(n));i=i.ua(),o=1+n.da.$|0,Cc(n.A,i,Mc(n.C,r)),zc(n.A,i,Mc(n.C,o)),n=i}else n=_h().r;return new Iq(t,e,n)}function mt(n){if(Dn(n,Rm())){var t=En(n).aa;zn(n,Rm());var e=new T1,r=gn(n,!0);for(q1(e,r);Dn(n,Bm());)zn(n,Bm()),q1(e,r=gn(n,!0));e=e.ua(),zn(n,Mm()),r=1+n.da.$|0,Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),n=e}else n=_h().r;return n}function $t(n){var t=En(n).aa,e=n.db;try{zn(n,Nm());var r=new YJ(Dt(n));zn(n,Tm());var i=new LF(r)}catch(t){if(!((i=t 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GK(i=_h().r,o=_h().r,s=_h().r,a=Tn(n)):i=i.v()}return zn(n,Tm()),o=1+n.da.$|0,Cc(n.A,i,Mc(n.C,t)),zc(n.A,i,Mc(n.C,o)),i}function xt(n){var t=En(n).Ia;if(t instanceof qB||t instanceof NB||t instanceof LB||t instanceof CB)return!0;var e=t$();return!!(null===e?null===t:e.d(t))||(!!(null===(e=e$())?null===t:e.d(t))||bn(n))}function Et(n){var t=En(n).aa,e=En(n).Ia;if(e instanceof qB){var r=(e=e.Xs).ja;e=e.ka,jn(n);var i=Xi().oD;r=new _K(new Hc(r,e),i)}else e instanceof NB?(r=e.Vs,jn(n),r=new _K(r,e=Xi().bI)):e instanceof LB?(r=e.vn,jn(n),r=new _K(r,e=Xi().cI)):e instanceof CB?(r=e.Us,jn(n),r=new _K(r,e=Xi().aI)):(null===(i=t$())?null===e:i.d(e))?(jn(n),r=new _K(!0,r=Xi().mm)):(null===(i=e$())?null===e:i.d(e))?(jn(n),r=new _K(!1,r=Xi().mm)):bn(n)?(jn(n),jn(n),r=new _K(void 0,r=Xi().Kk)):Vt(n,"Expected a literal");return e=1+n.da.$|0,Cc(n.A,r,Mc(n.C,t)),zc(n.A,r,Mc(n.C,e)),r}function Dt(n){var t=En(n).aa,e=new T1,r=jt(n);for(q1(e,r);Dn(n,Cm());)zn(n,Cm()),q1(e,r=jt(n));return r=e.ua(),e=new wO(e=r.Te(),r=r.hb()),r=1+n.da.$|0,Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),e}function At(n){var t=En(n).aa,e=jt(n);e=new lO(e);var r=1+n.da.$|0;return Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),e}function It(n){return En(n).Ia instanceof TB}function jt(n){var t,e=En(n).aa,r=In(n).Ia;return r instanceof TB?t=r.Ws:Vt(n,"Expected identifier"),r=1+n.da.$|0,Cc(n.A,t,Mc(n.C,e)),zc(n.A,t,Mc(n.C,r)),t}function St(n){var t=En(n).aa;n:{var e=En(n).Ia,r=qm();if(null===r?null===e:r.d(e)){for(zn(n,qm()),q1(e=new T1,r=gn(n,!0));Dn(n,Bm());)zn(n,Bm()),q1(e,r=gn(n,!0));if(e=e.ua(),zn(n,Lm()),e instanceof a1){r=e.h;var i=e.Ec,o=_h().r;if(null===o?null===r:o.d(r)){e=i;break n}}_h(),r=xl(Al(),new(U(DF).j)(["effekt"])),r=dZ(h1(),r),i="Tuple"+e.s(),e=new tQ(new wO(r,i),e)}else e=new tQ(e=Dt(n),r=mt(n))}return r=1+n.da.$|0,Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),e}function Ct(n){var t=En(n).aa,e=Dt(n),r=mt(n);return e=new ZW(e,r),r=1+n.da.$|0,Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),e}function zt(n){var t=En(n).aa;if(Dn(n,Rm())){var e=En(n).aa;zn(n,Rm());var r=new T1,i=At(n);for(q1(r,i);Dn(n,Bm());)zn(n,Bm()),q1(r,i=At(n));r=r.ua(),zn(n,Mm()),i=1+n.da.$|0,Cc(n.A,r,Mc(n.C,e)),zc(n.A,r,Mc(n.C,i)),e=r}else e=_h().r;return r=1+n.da.$|0,Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),e}function Nt(n){var t=En(n).aa;zn(n,Nm());var e=n.db;try{var r=At(n);zn(n,jm());var i=new LF(r)}catch(t){if(!((i=t instanceof my?t:new oH(t))instanceof kC))throw i instanceof oH?i.Wc:i;n.db=e,i=qF()}return e=mn(n,!0),i=bq(new gq,i,e),zn(n,Tm()),e=1+n.da.$|0,Cc(n.A,i,Mc(n.C,t)),zc(n.A,i,Mc(n.C,e)),i}function Tt(n){var t=En(n).aa,e=zt(n),r=En(n).aa,i=Dn(n,qm())?Rt(n):_h().r,o=1+n.da.$|0;for(Cc(n.A,i,Mc(n.C,r)),zc(n.A,i,Mc(n.C,o)),e=new FE(n,e,i),r=En(n).aa,i=new T1;Dn(n,Nm());){zn(o=n,Nm());var s=o,a=En(s).aa,u=At(s),c=et(s);u=new PJ(u,new LF(c)),c=1+s.da.$|0,Cc(s.A,u,Mc(s.C,a)),zc(s.A,u,Mc(s.C,c)),s=u,zn(o,Tm()),q1(i,s)}if(i=i.ua(),o=1+n.da.$|0,Cc(n.A,i,Mc(n.C,r)),zc(n.A,i,Mc(n.C,o)),null===(r=(e=new FE(n,e,i)).Jb))throw new pq(e);return e=new Iq(r.Jb,r.Kb,e.Kb),r=1+n.da.$|0,Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),e}function qt(n){var t=En(n).aa,e=zt(n),r=En(n).aa,i=Dn(n,qm())?Lt(n):_h().r,o=1+n.da.$|0;for(Cc(n.A,i,Mc(n.C,r)),zc(n.A,i,Mc(n.C,o)),e=new FE(n,e,i),r=En(n).aa,i=new T1;Dn(n,Nm());){zn(o=n,Nm());var s=Ot(o);zn(o,Tm()),q1(i,s)}if(i=i.ua(),o=1+n.da.$|0,Cc(n.A,i,Mc(n.C,r)),zc(n.A,i,Mc(n.C,o)),null===(r=(e=new FE(n,e,i)).Jb))throw new pq(e);return e=new Iq(r.Jb,r.Kb,e.Kb),r=1+n.da.$|0,Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),e}function Lt(n){var t=En(n).aa;if(zn(n,qm()),Dn(n,Lm())){zn(n,Lm());var e=_h().r}else{e=new T1;var r=Bt(n);for(q1(e,r);Dn(n,Bm());)zn(n,Bm()),q1(e,r=Bt(n));zn(n,Lm()),e=e.ua()}return r=1+n.da.$|0,Cc(n.A,e,Mc(n.C,t)),zc(n.A,e,Mc(n.C,r)),e}function Rt(n){var t=En(n).aa;if(zn(n,qm()),Dn(n,Lm())){zn(n,Lm());var e=_h().r}else{e=new T1;var r=Mt(n);for(q1(e,r);Dn(n,Bm());)zn(n,Bm()),q1(e,r=Mt(n));zn(n,Lm()),e=e.ua()}return 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Int32Array([15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,12,24,24,24,26,24,24,24,21,22,24,25,24,20,24,24,9,9,9,9,9,9,9,9,9,9,24,24,25,25,25,24,24,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,21,24,22,27,23,27,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,21,25,22,25,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,12,24,26,26,26,26,28,24,27,28,5,29,25,16,28,27,28,25,11,11,27,2,24,24,27,11,5,30,11,11,11,24,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,25,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,25,2,2,2,2,2,2,2,2])),a.Ag=(1|a.Ag)<<24>>24),u=Xv(a.lQ.a[s])),s=u;else s=8199!==s&&8239!==s&&Xv(Yv(a,s));if(!s&&34!==o){ii(n);continue}}break}else ui("Invalid escape sequence.",-1+n.Pb|0,n.Pb)}continue}if(36===s&&si(n,2).la(x(123))){var c=n.Qg.substring(e,n.Pb);return new LB(c,t=Bw(t))}}qF()===o&&ui("Unterminated 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CB(n=gF(n=n.Qg.substring(1+n.rd|0,-1+n.Pb|0),0))}(n);default:if(92===t&&ci(n,"u",n.Pb))return function(n){for(;;){var t=CS(n.rg);if(t instanceof LF){t=E(t.oa);var e=n;if(!e.BM){var r=VQ(new _Q(97),x(102)),i=VQ(new _Q(65),x(70));r=uP(r,i),i=VQ(new _Q(48),x(57)),e.AM=r.tj(i),e.BM=!0}if(e.AM.la(x(t))){ii(n);continue}}break}t=n.Qg.substring(2+n.rd|0,n.Pb);try{return new CB(cy(hy(),t,16))}catch(t){ui("Invalid unicode literal.",n.rd,n.Pb)}}(n);if(34===t)return ci(n,'""',n.Pb)?vi(n,di(n),!1):vi(n,wi(n),!1);if(ey(ry(),t))return hi(n);if(n.CM.la(x(t))){for(;(t=CS(n.rg))instanceof LF&&n.DM.la(x(E(t.oa)));)ii(n);var e=n.Qg.substring(n.rd,n.Pb);return gi||(gi=new bi),gi.rM.sb(e,new qE(()=>new TB(e)))}ui("Invalid keyword/identifier: "+x(t)+".",n.rd,n.Pb)}}function bi(){this.rM=null,gi=this,this.rM=aE(uE(),L$().aH.ya(new RE(n=>{var t=n.k();return bq(new gq,t,n)})))}Pr.prototype=new 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Object{constructor(n,t,e){t|=0,super(),Object.defineProperty(this,"range",{configurable:!0,enumerable:!0,writable:!0,value:null}),Object.defineProperty(this,"severity",{configurable:!0,enumerable:!0,writable:!0,value:0}),Object.defineProperty(this,"message",{configurable:!0,enumerable:!0,writable:!0,value:null}),Object.defineProperty(this,"source",{configurable:!0,enumerable:!0,writable:!0,value:null}),this.range=n,this.severity=t,this.message=e,this.source="effekt"}}),fb)(new(lb||(lb=class extends Object{constructor(n,t){super(),Object.defineProperty(this,"start",{configurable:!0,enumerable:!0,writable:!0,value:null}),Object.defineProperty(this,"end",{configurable:!0,enumerable:!0,writable:!0,value:null}),this.start=n,this.end=t}}),lb)(e,r),function(n){if(RG()===n)return xi().mY;if(UG()===n)return xi().pY;if(FG()===n)return xi().oY;if(BG()===n)return xi().nY;throw new pq(n)}(t.Do()),i)})),Rl(Ml(),e)}function vp(n,t){dp(n,t);var e=cn(t=new SC(t),n=pp(n));if(n=n=>{if(null!==n){var t=n.H();return n=n.G(),new(cb||(cb=class extends Object{constructor(n,t){super(),Object.defineProperty(this,"pos",{configurable:!0,enumerable:!0,writable:!0,value:null}),Object.defineProperty(this,"capture",{configurable:!0,enumerable:!0,writable:!0,value:null}),this.pos=n,this.capture=t}}),cb)(fp(t),$l(Al(),n))}throw new pq(n)},e===h1())n=h1();else{var r=t=new a1(n(t=e.b()),h1());for(e=e.c();e!==h1();){var i=e.b();i=new a1(n(i),h1()),r=r.h=i,e=e.c()}n=t}return Rl(Ml(),n)}function yp(n){if(this.VK=null,null===n)throw GT();this.VK=n}function bp(){}function gp(){this.XS="parser"}function mp(n,t){if(this.gL=null,this.$S=n,null===t)throw GT();this.gL=t}function $p(n,t){if(this.hL=null,this.bT=n,null===t)throw GT();this.hL=t}function kp(n,t,e,r,i){if(this.eT=n,this.dT=t,this.fT=e,this.gT=r,null===i)throw GT()}function xp(n,t,e){this.jG=t,this.iT=e,this.jT=n}function Ep(n){this.Dz=0,this.zT=n,this.Dz=b(n)}function Dp(n){this.iL=0,this.jL=n,this.iL=f(n)}function Ap(n,t){return 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n^=t,n=Math.imul(-2048144789,n^(n>>>16|0)),(n=Math.imul(-1028477387,n^(n>>>13|0)))^(n>>>16|0)},Il.prototype.$classData=F({fba:0},!1,"scala.runtime.Statics$",{fba:1,e:1}),Tl.prototype=new I,Tl.prototype.constructor=Tl,Tl.prototype.$classData=F({gba:0},!1,"scala.runtime.Statics$PFMarker$",{gba:1,e:1}),Ll.prototype=new I,Ll.prototype.constructor=Ll,Ll.prototype.$classData=F({Haa:0},!1,"scala.scalajs.js.JSConverters$JSRichIterableOnce$",{Haa:1,e:1}),Bl.prototype=new I,Bl.prototype.constructor=Bl,Bl.prototype.$classData=F({p6:0},!1,"scala.sys.package$",{p6:1,e:1}),Pl.prototype=new I,Pl.prototype.constructor=Pl,Pl.prototype.$classData=F({v6:0},!1,"scala.util.Sorting$",{v6:1,e:1}),Jl.prototype=new I,Jl.prototype.constructor=Jl,Wl.prototype=Jl.prototype,Jl.prototype.J=function(n,t){return n=this.io(n,t),-430675100+Math.imul(5,n<<13|n>>>19|0)|0},Jl.prototype.io=function(n,t){return t=Math.imul(-862048943,t),n^(t=Math.imul(461845907,t<<15|t>>>17|0))},Jl.prototype.Ga=function(n,t){return 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a=t.b();i=n,o=e,s=r,Qg(Yg(),a,new jz(o,s,i)),t=t.c()}return r.Ba}(n,t.nq);var h=ON(i);if(i=n=>{var t=jr(n.Qn.Tg);return new dB(t=new ID(t),n=Sr(n.Qn.Tg))},h===h1())i=h1();else{for(s=h.b(),u=s=new a1(i(s),h1()),h=h.c();h!==h1();){var l=h.b();l=new a1(i(l),h1()),u=u.h=l,h=h.c()}i=s}if(qL(),h=dZ(h1(),t),t=(t=>e=>{if(null!==e){var r=e.H(),i=e.G().yb(new RE(()=>(gm(0,c,f,t),!0))).ua();if(i===h1())e=h1();else{e=i.b();var o=e=new a1(Cr(n,e),h1());for(i=i.c();i!==h1();){var s=i.b();s=new a1(Cr(n,s),h1()),o=o.h=s,i=i.c()}}return new vB(e,r=Sr(r.Qn.Tg))}throw new pq(e)})(r),h===h1())t=h1();else{for(s=h.b(),u=s=new a1(t(s),h1()),h=h.c();h!==h1();)l=h.b(),l=new a1(t(l),h1()),u=u.h=l,h=h.c();t=s}return i=vZ(i,t),t=o.vq,a=function(n){return n.f()?qF():new LF(n.hb())}(a).ua(),t=bZ(t,new Nz(c,f,r)),a=vZ(a,t),r=gm(0,c,f,r),function(n,t,e,r,i,o){var s=jr(t.wq);s=new ID(s);for(var a=bZ(t.bn,new Sz(i,o,n)),u=t.an,c=null,f=null;u!==h1();){var h=u.b();for(h=zw(n,h).x();h.y();){var l=new 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this.Cy(n,t)},yp.prototype.$classData=F({SS:0},!1,"effekt.LanguageServer$compileSingle$",{SS:1,e:1,Mg:1}),bp.prototype=new I,bp.prototype.constructor=bp,bp.prototype.$classData=F({TS:0},!1,"effekt.LanguageServer$config$",{TS:1,e:1,kba:1}),gp.prototype=new I,gp.prototype.constructor=gp,gp.prototype.Cy=function(n,t){var e=this.XS,r=n.hf,i=()=>{var e=new ri(n);try{for(var r=!1;!r;){var i=e.Iq,o=null===i.Oi?qF():new LF(i.Oi.Ec);if(o.f())var s=qF();else s=new LF(o.v().Ia);if(s.la(Tm())&&!e.Ql.f())n:{var a=r0(e.Ql);if(li(e)===a){e.Ql.f()&&ui("string interpolation ${ ... } may only appear inside strings",e.rd,e.Pb);var u=r0(e.Ql);if(li(e)!==u&&pi(e)!==u||ui("string interpolation ${ ... } may only appear inside strings",e.rd,e.Pb),u&&u.$classData&&u.$classData.ab.qM&&u.Qp()===e){var c=vi(e,u,!0);break n}throw new pq(u)}if(pi(e)!==a&&wi(e)!==a&&di(e)!==a)throw new pq(a);c=yi(e)}else c=yi(e);var f=Em();if(null===f?null===c:f.d(c))r=!0,q1(e.Iq,new JD(1+e.Pb|0,1+e.Pb|0,Em()));else 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f=r.b(),h=f=new a1(o(f),h1());for(r=r.c();r!==h1();){var l=r.b();l=new a1(o(l),h1()),h=h.h=l,r=r.c()}o=f}if(f=n=>{if(null!==n)return new dU(n.te,n.wh,n.dn);throw new pq(n)},o===h1())h=h1();else for(r=h=new a1(f(h=o.b()),h1()),l=o.c();l!==h1();){var p=l.b();p=new a1(f(p),h1()),r=r.h=p,l=l.c()}if(f=new bV("etaBinding"),s=new qM(c=iw(n,c,t),s,u,h),o===h1())u=h1();else for(c=u=new a1((u=o.b()).te,h1()),h=o.c();h!==h1();)r=new a1((r=h.b()).te,h1()),c=c.h=r,h=h.c();return sr(),new wU(e,u,a,o,i=or(0,f,c=s.DG,s,new UU(i=new hH(f,i=Xp(n,i,t)))))}(n,e,o,u,c,i,f,a,h,r)}if(Q$(r))return iw(n,r,e);throw new pq(r)}throw i instanceof uV&&Js(e,"Expected a function but got an object of type "+i),new pq(i)}if(t instanceof GK){if(i=t.zk,c=t.Ak,o=t.mi,r=t.zh,i===h1())u=h1();else for(u=i.b(),t=u=new a1(de(e,u),h1()),i=i.c();i!==h1();)s=i.b(),s=new a1(de(e,s),h1()),t=t.h=s,i=i.c();if(o===h1())t=h1();else for(t=o.b(),i=t=new a1(de(e,t.Xb).na(),h1()),s=o.c();s!==h1();)f=s.b(),f=new a1(de(e,f.Xb).na(),h1()),i=i.h=f,s=s.c();if(c===h1())c=h1();else{for(i=c.b(),s=i=new a1(_p(n,i,e),h1()),c=c.c();c!==h1();)f=c.b(),f=new a1(_p(n,f,e),h1()),s=s.h=f,c=c.c();c=i}if(o===h1())o=h1();else{for(i=o.b(),s=i=new a1(Yp(n,i,e),h1()),o=o.c();o!==h1();)f=o.b(),f=new a1(Yp(n,f,e),h1()),s=s.h=f,o=o.c();o=i}return new wU(u,t,c,o,r=Bp(n,r,e))}if(!(t instanceof ZK))return jp(n,t,e);Js(e,"Expected a function but got an object instantiation: "+t)}function Vp(n,t,e){if((n=Hp(n,t,e))instanceof zU)return n;if(null!==n)return dD(e,n);throw new pq(n)}function Hp(n,t,e){if(t instanceof YJ){var r=ve(e,t);if(r instanceof XQ){var i=fe(e,r),o=to(eo(),i,e);Qk();var s=xl(Al(),new(U(Ui).j)([r.na()])),a=new RU(r,bE(0,s),Xp(n,o,e));return wD(e,a)}if(r instanceof uQ){var u=Qp(fe(e,r),eo().er,e),c=new LU(new vU(iw(n,r,e),eo().er,Zp(n,u,e)),_h().r,_h().r,_h().r);return wD(e,c)}if(rk(r))return rw(n,r,e);if(Q$(r))return Fp(n,t,e);throw new pq(r)}if(t instanceof _K)return new aH(t.ut,Xp(n,t.rp,e));if(t instanceof QJ)return new fH(Vp(n,t.fm,e),ve(e,t),Xp(n,se(e,t),e));if(t instanceof JK)return Fp(n,t.ij,e);if(t instanceof ZK||t instanceof tV||t instanceof GK)return Fp(n,t,e);if(t instanceof YK){var f=t.cm,h=t.dm,l=t.bm;if(null!==f&&(_h(),0===f.Ma(1))){var p=Wq(f,0);if(p instanceof qK){var w=new BU(Vp(n,p.ki,e),Bp(n,h,e),Bp(n,l,e));return wD(e,w)}}var d=Wp(n,_h().r,f,Bp(n,h,e),e),v=Wp(n,_h().r,_h().r,Bp(n,l,e),e),y=Ze();_h();var b=xl(Al(),new(U(WE).j)([d,v])),g=Ye(y,dZ(h1(),b));return wD(e,g)}if(t instanceof eV){var m=t.im,$=t.gm,k=t.hm,x=new yV("whileLoop"),E=new gU(_h().r,_h().r,_h().r,_h().r,im().Gq),D=ne().Mo,A=new LU(new dU(x,E,nw(oe(e,D,$),e)),_h().r,_h().r,_h().r),I=Bp(n,$,e),j=new HU(new bV("whileThen"),I.Kc,I,A);if(k.f())var S=qF();else{var C=k.v();S=new LF(Bp(n,C,e))}if(S.f())var z=new UU(new aH(void 0,im().Gq));else z=S.v();var N=z;n:{if(null!==m&&(_h(),0===m.Ma(1))){var T=Wq(m,0);if(T instanceof qK){var q=T.ki,L=e.w,R=e.S,M=e.K,B=e.Wb,O=new T1;e.Wb=O;var F=new BU(Vp(n,q,e),j,N);e.Wb=B,e.K=M,e.w=L,e.S=R;var P=yD(F,O);break n}}var K=e.w,V=e.S,H=e.K,G=e.Wb,J=new T1;e.Wb=J;var W=Wp(n,_h().r,m,j,e),Q=Wp(n,_h().r,_h().r,N,e),Y=Ze();_h();var _=xl(Al(),new(U(WE).j)([W,Q])),X=Ye(Y,dZ(h1(),_));e.Wb=G,e.K=H,e.w=K,e.S=V,P=yD(X,J)}var Z=new wU(_h().r,_h().r,_h().r,_h().r,P);return vD(e,x,Z),wD(e,A)}if(t instanceof XK){var nn=t.Nn,tn=t.Ln,en=t.Mn,rn=_h().r;if((null===rn?null===tn:rn.d(tn))&&qF()===en){var on=Vp(n,nn,e),sn=new OU(dD(e,on),_h().r,qF());return wD(e,sn)}var an=Vp(n,nn,e),un=dD(e,an);if(tn===h1())var cn=h1();else{for(var fn=tn.b(),hn=new a1(Jp(n,un,fn,e),h1()),ln=hn,pn=tn.c();pn!==h1();){var wn=pn.b(),dn=new a1(Jp(n,un,wn,e),h1());ln=ln.h=dn,pn=pn.c()}cn=hn}if(en.f())var vn=qF();else{var yn=en.v();vn=new LF(Wp(n,_h().r,_h().r,Bp(n,yn,e),e))}var bn=vn.ua(),gn=Ye(Ze(),vZ(cn,bn));return wD(e,gn)}if(t instanceof nV){var mn=t.nj,$n=t.mj,kn=t=>{t=t.Cn.v().Ae();var r=de(e,t);return t=ew(n,r,e),r=r.na(),bq(new gq,t,r)};if($n===h1())var xn=h1();else{for(var En=new a1(kn($n.b()),h1()),Dn=En,An=$n.c();An!==h1();){var In=new a1(kn(An.b()),h1());Dn=Dn.h=In,An=An.c()}xn=En}var jn=Cb(),Sn=xn.fG(jn.zj);if(null===Sn)throw new pq(Sn);var Cn=Sn.G(),zn=Sn.H(),Nn=Cn,Tn=new wU(_h().r,Nn,_h().r,zn,Bp(n,mn,e)),qn=t=>{if(null!==t)return Gp(n,t.qk,!0,e);throw new pq(t)};if($n===h1())var Ln=h1();else{for(var Rn=new a1(qn($n.b()),h1()),Mn=Rn,Bn=$n.c();Bn!==h1();){var On=new a1(qn(Bn.b()),h1());Mn=Mn.h=On,Bn=Bn.c()}Ln=Rn}var Fn=new VU(Tn,Ln);return wD(e,Fn)}if(t instanceof WJ){var Pn=t.Dk,Un=de(e,t.Ek),Kn=fe(e,Un),Vn=Zp(n,Kn,e);Qk();var Hn=xl(Al(),new(U(Ui).j)([Un.na()])),Gn=new IU(Un,Vn,bE(0,Hn)),Jn=_h().r;_h();var Wn=xl(Al(),new(U(OH).j)([Un.na()])),Qn=dZ(h1(),Wn),Yn=_h().r;_h();var _n=xl(Al(),new(U(jU).j)([Gn])),Xn=new PU(new wU(Jn,Qn,Yn,dZ(h1(),_n),Bp(n,Pn,e)));return wD(e,Xn)}if(t instanceof QK){var Zn=new MU;return wD(e,Zn)}if(t instanceof HJ){var nt=t.am,tt=ve(e,t);if(tt instanceof XQ){Qk();var et=xl(Al(),new(U(Ui).j)([tt.na()])),rt=new FU(tt,bE(0,et),Vp(n,nt,e));return wD(e,rt)}if(tt instanceof uQ){var it=Vp(n,nt,e),ot=ve(e,t),st=Qp(fe(e,ot),eo().fr,e),at=new vU(iw(n,ot,e),eo().fr,Zp(n,st,e)),ut=_h().r;_h();var ct=xl(Al(),new(U(TU).j)([it])),ft=new LU(at,ut,dZ(h1(),ct),_h().r);return wD(e,ft)}throw new pq(tt)}if(t instanceof JJ){var ht=t.kj,lt=t.lj,pt=t.jj,wt=Up(n,ht,e),dt=ne().$h,vt=oe(e,dt,t);if(vt===h1())var yt=h1();else{for(var bt=vt.b(),gt=new a1(Xp(n,bt,e),h1()),mt=gt,$t=vt.c();$t!==h1();){var kt=$t.b(),xt=new a1(Xp(n,kt,e),h1());mt=mt.h=xt,$t=$t.c()}yt=gt}if(lt===h1())var Et=h1();else{for(var Dt=lt.b(),At=new a1(Vp(n,Dt,e),h1()),It=At,jt=lt.c();jt!==h1();){var St=jt.b(),Ct=new a1(Vp(n,St,e),h1());It=It.h=Ct,jt=jt.c()}Et=At}if(pt===h1())var zt=h1();else{for(var Nt=pt.b(),Tt=new a1(Pp(n,Nt,e),h1()),qt=Tt,Lt=pt.c();Lt!==h1();){var Rt=Lt.b(),Mt=new a1(Pp(n,Rt,e),h1());qt=qt.h=Mt,Lt=Lt.c()}zt=Tt}var Bt=ae(e,ht),Ot=function(n,t,e){if(t instanceof JH)return t;Js(e,"Expected an operation")}(qe(),ve(e,t),e),Ft=Zp(n,Qp(Bt,Ot,e),e),Pt=KG(Ot.Bp.wp.s(),yt),Ut=new LU(new vU(wt,Ot,Ft),Pt,Et,zt);return wD(e,Ut)}if(t instanceof WK){var Kt=t.Ah,Vt=t.Wg,Ht=t.Vg;if(Kt instanceof SK){var Gt=Kt.Sl;if(Gt instanceof tV){var Jt=Gt.Fk;n:{var Wt=se(e,Jt);if(Wt instanceof kV){var Qt=Wt.Zg;if(Wt.tg instanceof aV&&Qt instanceof TN){var Yt=Qt;break n}}Ps(e,"Should be a boxed function type with a known capture set.")}var _t=Yt,Xt=Vp(n,Jt,e),Zt=ne().$h,te=oe(e,Zt,t);if(te===h1())var ee=h1();else{for(var re=te.b(),ie=new a1(Xp(n,re,e),h1()),ue=ie,ce=te.c();ce!==h1();){var he=ce.b(),le=new a1(Xp(n,he,e),h1());ue=ue.h=le,ce=ce.c()}ee=ie}if(Vt===h1())var pe=h1();else{for(var we=Vt.b(),ye=new a1(Vp(n,we,e),h1()),be=ye,ge=Vt.c();ge!==h1();){var me=ge.b(),$e=new a1(Vp(n,me,e),h1());be=be.h=$e,ge=ge.c()}pe=ye}if(Ht===h1())var ke=h1();else{for(var xe=Ht.b(),Ee=new a1(Pp(n,xe,e),h1()),De=Ee,Ae=Ht.c();Ae!==h1();){var Ie=Ae.b(),je=new a1(Pp(n,Ie,e),h1());De=De.h=je,Ae=Ae.c()}ke=Ee}if(RN(_t))n:{for(var Se=Ht;!Se.f();){var Ce=Se.b();if(!ow(n,Ce,e)){var ze=!1;break n}Se=Se.c()}ze=!0}else ze=!1;if(ze)var Ne=new YM(new LU(new bU(Xt),ee,pe,ke));else{var Te=new LU(new bU(Xt),ee,pe,ke);Ne=wD(e,Te)}return Ne}}if(Kt instanceof kJ)return function(n,t,e,r,i,o){var s=ne().$h,a=oe(o,s,t);if(a===h1())t=h1();else for(t=a.b(),s=t=new a1(Xp(n,t,o),h1()),a=a.c();a!==h1();){var u=a.b();u=new a1(Xp(n,u,o),h1()),s=s.h=u,a=a.c()}if(r===h1())r=h1();else{for(s=r.b(),a=s=new a1(Vp(n,s,o),h1()),r=r.c();r!==h1();)u=r.b(),u=new a1(Vp(n,u,o),h1()),a=a.h=u,r=r.c();r=s}if(i===h1())s=h1();else for(s=i.b(),a=s=new a1(Pp(n,s,o),h1()),u=i.c();u!==h1();){var c=u.b();c=new a1(Pp(n,c,o),h1()),a=a.h=c,u=u.c()}n:{if(HA(e)){if(a=Lp(e,o),u=Kg(),a===u){o=new cH(o=iw(n,e,o),t,r);break n}if(a=Lp(e,o),u=Vg(),a===u){o=new qM(o=iw(n,e,o),t,r,s);break n}}if(e instanceof FH)i.f()||Js(o,"Constructors cannot take block arguments."),o=new uH(new WU(e.xp,t),e,r);else if(e instanceof JH&&Ps(o,"Should have been translated to a method call!"),e instanceof VH&&Ps(o,"Should have been translated to a select!"),Q$(e)){if(a=ne().Vf,RN(n.JE(oe(o,a,e),o)))t:{for(;!i.f();){if(a=i.b(),!ow(n,a,o)){i=!1;break t}i=i.c()}i=!0}else i=!1;i?o=new YM(o=new LU(o=iw(n,e,o),t,r,s)):(n=new LU(n=iw(n,e,o),t,r,s),o=wD(o,n))}else{if(!rk(e))throw new pq(e);n=new LU(n=new bU(n=rw(n,e,o)),t,r,s),o=wD(o,n)}}return o}(n,t,ve(e,Kt),Vt,Ht,e);Kt instanceof SK&&Ps(e,"Should not happen. Unbox should have been inferred.")}throw t instanceof GJ&&Ps(e,"Should have been translated away (to explicit selection `@CAP.op()`) by capability passing."),new pq(t)}function Gp(n,t,e,r){var i,o=t.Wl,s=n=>{var t=ve(r,n);return bq(new gq,t,n)};if(o===h1())s=h1();else{var a=o.b(),u=a=new a1(s(a),h1());for(o=o.c();o!==h1();){var c=o.b();c=new a1(s(c),h1()),u=u.h=c,o=o.c()}s=a}if(Cb(),s=dE(vE(),s),a=ve(r,t),(t=Zp(n,ae(r,t),r))instanceof mU?i=t:Ps(r,"Should be an interface type."),(u=a.oj)===h1())u=h1();else{for(t=u.b(),a=t=new a1(s.q(t),h1()),u=u.c();u!==h1();)o=u.b(),o=new a1(s.q(o),h1()),a=a.h=o,u=u.c();u=t}if(t=t=>{if(null!==t){var i=t.Gn,o=t.Hn,s=t.Zl,a=t.wk,u=t.Fn;if(o===h1())var c=h1();else{c=o.b();var f=c=new a1(_p(n,c,r),h1());for(o=o.c();o!==h1();){var h=o.b();h=new a1(_p(n,h,r),h1()),f=f.h=h,o=o.c()}}if(i===h1())i=h1();else{for(f=i.b(),o=f=new a1(de(r,f),h1()),i=i.c();i!==h1();)h=i.b(),h=new a1(de(r,h),h1()),o=o.h=h,i=i.c();i=f}if(e)s=de(r,u),s=new LF(s=ew(n,s,r)),u=_h().r,f=_h().r;else{if(u=qF(),s===h1())f=h1();else for(f=s.b(),o=f=new a1(Yp(n,f,r),h1()),h=s.c();h!==h1();){var l=h.b();l=new a1(Yp(n,l,r),h1()),o=o.h=l,h=h.c()}if(s===h1())o=h1();else for(o=s.b(),h=o=new a1(de(r,o.Xb).na(),h1()),s=s.c();s!==h1();)l=s.b(),l=new a1(de(r,l.Xb).na(),h1()),h=h.h=l,s=s.c();s=u,u=f,f=o}return new HE(t=ve(r,t),i,f,c,u,s,a=Bp(n,a,r))}throw new pq(t)},u===h1())t=h1();else{for(a=s=new a1(t(s=u.b()),h1()),u=u.c();u!==h1();)o=new a1(t(o=u.b()),h1()),a=a.h=o,u=u.c();t=s}return new VC(i,t)}function Jp(n,t,e,r){_h(),Al();var i=e.Yl;return t=xl(0,new(U(Aq).j)([bq(new gq,t,i)])),Wp(n,dZ(h1(),t),e.sk,Bp(n,e.Xl,r),r)}function Wp(n,t,e,r,i){for(var o=t,s=null,a=null;o!==h1();){var u=o.b();if(null===u)throw new pq(u);for(u=(u=Sp(n,i,u.G())).x();u.y();){var c=new a1(u.t(),h1());null===a?s=c:a.h=c,a=c}o=o.c()}for(o=null===s?h1():s,s=e,u=a=null;s!==h1();){for(c=s.b(),c=Cp(n,i,c).x();c.y();){var f=new a1(c.t(),h1());null===u?a=f:u.h=f,u=f}s=s.c()}if(o=vZ(o,s=null===a?h1():a),s=new yV("k"),r=new wU(a=_h().r,u=_h().r,o,c=_h().r,r),r=vD(i,s,r),s=t=>{if(null!==t){var e=t.H();return t=Np(n,i,t.G()),bq(new gq,e,t)}throw new pq(t)},t===h1())t=h1();else{for(u=a=new a1(s(a=t.b()),h1()),t=t.c();t!==h1();)c=new a1(s(c=t.b()),h1()),u=u.h=c,t=t.c();t=a}for(Cb(),t=dE(vE(),t),s=e,u=a=null;s!==h1();){for(c=s.b(),c=Tp(n,i,c).x();c.y();)f=new a1(c.t(),h1()),null===u?a=f:u.h=f,u=f;s=s.c()}if(s=null===a?h1():a,t.f())e=s;else{for(t=new KM(t),a=s=null;e!==h1();){for(u=e.b(),u=Tp(n,i,u).x();u.y();)c=new a1(u.t(),h1()),null===a?s=c:a.h=c,a=c;e=e.c()}e=new a1(t,e=null===s?h1():s)}if(o===h1())o=h1();else{for(s=t=new a1(new hH((t=o.b()).Kf,t.Pg),h1()),o=o.c();o!==h1();)a=new a1(new hH((a=o.b()).Kf,a.Pg),h1()),s=s.h=a,o=o.c();o=t}return new GE(e,r,o)}function Qp(n,t,e){if(null!==(n=Te(qe(),n,e))){var r=n.Lc,i=n.tf;if(r instanceof nW){if(null!==t){var o=t.dx;r=t.aD,n=t.bx,e=t.cr,t=t.cx,mk();var s=_S(o,i);Cb(),s=SS(s);var a=S_(),u=new LI(s,a);if(i=KG(i=i.s(),o),n===h1())o=h1();else for(s=o=new a1((o=n.b()).na(),h1()),a=n.c();a!==h1();){var c=a.b();c=new a1(c.na(),h1()),s=s.h=c,a=a.c()}if((c=_A(t))===h1())s=h1();else for(a=s=new a1(new tW((s=c.b()).Lc.Y()),h1()),c=c.c();c!==h1();){var f=c.b();f=new a1(new tW(f.Lc.Y()),h1()),a=a.h=f,c=c.c()}if(o=vZ(o,s),s=n=>((n=n.Ch).f()&&Rs("Operation value parameters should have an annotated type."),MI(u,n.v())),r===h1())r=h1();else{for(c=a=new a1(s(a=r.b()),h1()),r=r.c();r!==h1();)f=new a1(s(f=r.b()),h1()),c=c.h=f,r=r.c();r=a}if(s=n=>((n=n.Mf).f()&&Rs("Operation block parameters should have an annotated type."),FI(u,n.v())),n===h1())n=h1();else{for(c=a=new a1(s(a=n.b()),h1()),n=n.c();n!==h1();)f=new a1(s(f=n.b()),h1()),c=c.h=f,n=n.c();n=a}return new aV(i,o,r,n,e=MI(u,e),t=BI(u,t))}throw new pq(t)}r instanceof ZJ&&Ps(e,"Cannot select from an extern interface")}throw new pq(n)}function Yp(n,t,e){return ew(n,de(e,t.Xb),e)}function _p(n,t,e){return tw(n,de(e,t.Ug),e)}function Xp(n,t,e){if(t instanceof kV){var r=t.Zg;return new JU(n=Zp(n,t.tg,e),e=nw(r,e))}if(t instanceof EV)return new QU(t.ve);if(t instanceof xV){r=t.pi;var i=t.oi;if(i===h1())e=h1();else{var o=t=new a1(Xp(n,t=i.b(),e),h1());for(i=i.c();i!==h1();){var s=i.b();s=new a1(Xp(n,s,e),h1()),o=o.h=s,i=i.c()}e=t}return new WU(r,e)}throw new pq(t)}function Zp(n,t,e){if(t instanceof aV){var r=t.gd,i=t.Ke,o=t.hd,s=t.fd,a=t.$c,u=_A(t.Gd);if(u===h1())var c=h1();else{for(c=t=new a1(Zp(n,t=u.b(),e),h1()),u=u.c();u!==h1();){var f=u.b();f=new a1(Zp(n,f,e),h1()),c=c.h=f,u=u.c()}c=t}if(s===h1())t=h1();else for(u=t=new a1(Zp(n,t=s.b(),e),h1()),f=s.c();f!==h1();){var h=f.b();h=new a1(Zp(n,h,e),h1()),u=u.h=h,f=f.c()}if(t=vZ(t,c),i.s()!==t.s()&&(vl(),qf(),s="Internal error: number of block parameters does not match number of capture parameters.\n |\n | Blockparams: "+s+"\n | Effects: "+c+"\n | Captures: "+i+"\n |",wl(0,Nf(qf(),s))),o===h1())o=h1();else{for(c=s=new a1(Xp(n,s=o.b(),e),h1()),o=o.c();o!==h1();)u=new a1(Xp(n,u=o.b(),e),h1()),c=c.h=u,o=o.c();o=s}return new gU(r,i,o,t,n=Xp(n,a,e))}if(t instanceof uV){if(r=t.Lc,(o=t.tf)===h1())n=h1();else{for(a=i=new a1(Xp(n,i=o.b(),e),h1()),o=o.c();o!==h1();)s=new a1(Xp(n,s=o.b(),e),h1()),a=a.h=s,o=o.c();n=i}return new mU(r,n)}throw new pq(t)}function nw(n,t){if(n instanceof LH){Wi();var e=xl(Al(),new(U(DF).j)([""," should be a concrete capture set in this phase."]));Ps(t,e=Ji(new AS(e),kl(Al(),new j([n]))))}if(n instanceof TN)return n.tc.ya(new RE(n=>n));throw new pq(n)}function tw(n,t,e){return new SU(t,n=Xp(n,le(e,t),e))}function ew(n,t,e){return n=Zp(n,fe(e,t),e),Qk(),new IU(t,n,e=bE(0,e=xl(Al(),new(U(Ui).j)([t]))))}function rw(n,t,e){return new hH(t,n=Xp(n,le(e,t),e))}function iw(n,t,e){return new dU(t,n=Zp(n,fe(e,t),e),e=nw(oe(e,ne().Vf,t),e))}function ow(n,t,e){return(t=ie(e,ne().Mo,t))instanceof LF&&RN(n.JE(t.oa,e))}function sw(){return zp||(zp=new qp),zp}function aw(){}function uw(){}function cw(n){return uf().Oa.U(n)?uf().Oa.q(n):n}function fw(n,t){if(uf().Oa.U(t))return uf().Oa.q(t);if(t instanceof hH){var e=t.hn,r=cw(t.Xf);return new hH(r,n=bw(n,e))}if(t instanceof aH)return new aH(e=t.en,n=bw(n,t.Cq));if(t instanceof cH){var i=t.Xo;if(r=t.fn,e=pw(n,t.Jl),i===h1())t=h1();else{var o=t=new a1(bw(n,t=i.b()),h1());for(i=i.c();i!==h1();){var s=i.b();s=new a1(bw(n,s),h1()),o=o.h=s,i=i.c()}}if(r===h1())n=h1();else{for(i=o=new a1(fw(n,o=r.b()),h1()),r=r.c();r!==h1();)s=new a1(fw(n,s=r.b()),h1()),i=i.h=s,r=r.c();n=o}return new cH(e,t,n)}if(t instanceof uH){if(r=t.Hl,e=t.Il,null!==(t=t.Wo)){if(s=t.cp,t=cw(t.bp),s===h1())o=h1();else for(i=o=new a1(bw(n,o=s.b()),h1()),s=s.c();s!==h1();){var a=s.b();a=new a1(bw(n,a),h1()),i=i.h=a,s=s.c()}t=new WU(t,o)}else Ol(Fl(),"Should never happen!"),t=void 0;if(r=cw(r),e===h1())n=h1();else{for(i=o=new a1(fw(n,o=e.b()),h1()),e=e.c();e!==h1();)s=new a1(fw(n,s=e.b()),h1()),i=i.h=s,e=e.c();n=o}return new uH(t,r,n)}return t instanceof fH?(o=t.Yo,e=t.Dq,new fH(r=fw(n,t.gn),t=cw(o),n=bw(n,e))):t instanceof sH?(e=t.Ss,new sH(n=pw(n,t.Gl),e=mw(e))):void Ol(Fl(),"Should never happen!")}function hw(n,t){if(uf().Oa.U(t))return uf().Oa.q(t);if(t instanceof qM){var e=t.Ro,r=t.$m,i=t.Yj;if(t=pw(n,t.Xj),e===h1())var o=h1();else{var s=o=new a1(bw(n,o=e.b()),h1());for(e=e.c();e!==h1();){var a=e.b();a=new a1(bw(n,a),h1()),s=s.h=a,e=e.c()}}if(r===h1())r=h1();else{for(e=s=new a1(fw(n,s=r.b()),h1()),r=r.c();r!==h1();)a=new a1(fw(n,a=r.b()),h1()),e=e.h=a,r=r.c();r=s}if(i===h1())n=h1();else{for(e=s=new a1(pw(n,s=i.b()),h1()),i=i.c();i!==h1();)a=new a1(pw(n,a=i.b()),h1()),e=e.h=a,i=i.c();n=s}i=new qM(t,o,r,n)}else t instanceof YM?i=new YM(n=lw(n,t.Yi)):t instanceof zU?i=fw(n,t):Ol(Fl(),"Should never happen!");return i}function lw(n,t){if(PC(new FC(n),t))return new FC(n),UC(t,n=uf().Oa);if(t instanceof KU){var e=t.gk;if(t=t.$i,e===h1())var r=h1();else{var i=r=new a1(ww(n,r=e.b()),h1());for(e=e.c();e!==h1();){var o=e.b();o=new a1(ww(n,o),h1()),i=i.h=o,e=e.c()}}return new KU(r,n=lw(n,t))}if(t instanceof UU)return new UU(n=fw(n,t.ei));if(t instanceof HU)return e=t.Eq,i=t.aj,r=t.bj,new HU(t=cw(t.Nl),e=bw(n,e),i=lw(n,i),n=lw(n,r));if(t instanceof LU){var s=t.Ll;if(e=t.ak,r=t.ci,t=pw(n,t.di),s===h1())i=h1();else for(o=i=new a1(bw(n,i=s.b()),h1()),s=s.c();s!==h1();){var a=s.b();a=new a1(bw(n,a),h1()),o=o.h=a,s=s.c()}if(e===h1())e=h1();else{for(s=o=new a1(fw(n,o=e.b()),h1()),e=e.c();e!==h1();)a=new a1(fw(n,a=e.b()),h1()),s=s.h=a,e=e.c();e=o}if(r===h1())n=h1();else{for(s=o=new a1(pw(n,o=r.b()),h1()),r=r.c();r!==h1();)a=new a1(pw(n,a=r.b()),h1()),s=s.h=a,r=r.c();n=o}return new LU(t,i,e,n)}if(t instanceof BU)return i=t.ck,r=t.bk,new BU(t=fw(n,t.nn),i=lw(n,i),n=lw(n,r));if(t instanceof OU){if(o=t.dk,r=t.ek,t=fw(n,t.on),o===h1())i=h1();else for(e=i=new a1(kw(n,i=o.b()),h1()),o=o.c();o!==h1();)s=new a1(kw(n,s=o.b()),h1()),e=e.h=s,o=o.c();return r.f()?n=qF():n=new LF(lw(n,r=r.v())),new OU(t,i,n)}if(t instanceof PU)return new PU(n=pw(n,t.fk));if(t instanceof qU)return e=t.kn,i=t.Kl,r=t.$j,new qU(t=cw(t.jn),e=fw(n,e),i=cw(i),n=lw(n,r));if(t instanceof GU)return e=t.sn,i=t.Fq,r=t.ik,new GU(t=cw(t.rn),e=hw(n,e),i=cw(i),n=lw(n,r));if(t instanceof RU)return i=t.$o,r=t.ln,new RU(t=cw(t.mn),i=mw(i),n=bw(n,r));if(t instanceof FU)return i=t.ap,r=t.qn,new FU(t=cw(t.pn),i=mw(i),n=fw(n,r));if(t instanceof VU){if(e=t.Ml,t=pw(n,t.hk),e===h1())n=h1();else{for(i=r=new a1(dw(n,r=e.b()),h1()),e=e.c();e!==h1();)o=new a1(dw(n,o=e.b()),h1()),i=i.h=o,e=e.c();n=r}return new VU(t,n)}if(t instanceof MU)return t;Ol(Fl(),"Should never happen!")}function pw(n,t){if(uf().Oa.U(t))return uf().Oa.q(t);if(t instanceof dU){var e=t.Um,r=t.qq;return new dU(t=cw(t.Jf),n=gw(n,e),r=mw(r))}if(t instanceof wU){var i=t.Ti,o=t.Oo,s=t.vh;if(r=t.pg,t=t.If,i===h1())e=h1();else{var a=e=new a1(cw(e=i.b()),h1());for(i=i.c();i!==h1();){var u=i.b();u=new a1(cw(u),h1()),a=a.h=u,i=i.c()}}if(o===h1())o=h1();else{for(i=a=new a1(cw(a=o.b()),h1()),o=o.c();o!==h1();)u=new a1(cw(u=o.b()),h1()),i=i.h=u,o=o.c();o=a}if(s===h1())s=h1();else{for(i=a=new a1(yw(n,a=s.b()),h1()),s=s.c();s!==h1();)u=new a1(yw(n,u=s.b()),h1()),i=i.h=u,s=s.c();s=a}if(r===h1())r=h1();else{for(i=a=new a1(yw(n,a=r.b()),h1()),r=r.c();r!==h1();)u=new a1(yw(n,u=r.b()),h1()),i=i.h=u,r=r.c();r=a}return new wU(e,o,s,r,n=lw(n,t))}return t instanceof vU?(e=t.vl,r=t.Vm,new vU(t=pw(n,t.bi),e=cw(e),n=gw(n,r))):t instanceof bU?new bU(n=fw(n,t.Wj)):t instanceof yU?new yU(n=dw(n,t.Vj)):void Ol(Fl(),"Should never happen!")}function ww(n,t){if(uf().Oa.U(t))return uf().Oa.q(t);if(t instanceof xU){var e=t.Vi;return new xU(t=cw(t.Wi),n=pw(n,e))}if(t instanceof EU){var r=t.Ms;return e=t.xl,new EU(t=cw(t.yl),r=bw(n,r),n=hw(n,e))}Ol(Fl(),"Should never happen!")}function dw(n,t){if(uf().Oa.U(t))return uf().Oa.q(t);if(null!==t){var e=t.Al;if(null!==(t=t.uq)){var r=t.Zm;if(t=cw(t.Ym),r===h1())var i=h1();else{var o=i=new a1(bw(n,i=r.b()),h1());for(r=r.c();r!==h1();){var s=r.b();s=new a1(bw(n,s),h1()),o=o.h=s,r=r.c()}}t=new mU(t,i)}else Ol(Fl(),"Should never happen!"),t=void 0;if(e===h1())n=h1();else{for(o=i=new a1(vw(n,i=e.b()),h1()),e=e.c();e!==h1();)r=new a1(vw(n,r=e.b()),h1()),o=o.h=r,e=e.c();n=i}return new VC(t,n)}Ol(Fl(),"Should never happen!")}function vw(n,t){if(null!==t){var e=t.xq,r=t.Os,i=t.Fl,o=t.Dl,s=t.El,a=t.Cl;if(t=cw(t.cn),e===h1())var u=h1();else{var c=u=new a1(cw(u=e.b()),h1());for(e=e.c();e!==h1();){var f=e.b();f=new a1(cw(f),h1()),c=c.h=f,e=e.c()}}if(r===h1())r=h1();else{for(e=c=new a1(cw(c=r.b()),h1()),r=r.c();r!==h1();)f=new a1(cw(f=r.b()),h1()),e=e.h=f,r=r.c();r=c}if(i===h1())i=h1();else{for(e=c=new a1(yw(n,c=i.b()),h1()),i=i.c();i!==h1();)f=new a1(yw(n,f=i.b()),h1()),e=e.h=f,i=i.c();i=c}if(o===h1())o=h1();else{for(e=c=new a1(yw(n,c=o.b()),h1()),o=o.c();o!==h1();)f=new a1(yw(n,f=o.b()),h1()),e=e.h=f,o=o.c();o=c}return s.f()?s=qF():s=new LF(yw(n,s=s.v())),new HE(t,u,r,i,o,s,n=lw(n,a))}Ol(Fl(),"Should never happen!")}function yw(n,t){if(uf().Oa.U(t))return uf().Oa.q(t);if(t instanceof SU){var e=t.Pg;return new SU(t=cw(t.Kf),n=bw(n,e))}if(t instanceof IU){var r=t.wh;return e=t.dn,new IU(t=cw(t.te),n=gw(n,r),e=mw(e))}Ol(Fl(),"Should never happen!")}function bw(n,t){if(t instanceof QU)return new QU(n=cw(t.Hq));if(t instanceof WU){var e=t.cp;if(t=cw(t.bp),e===h1())n=h1();else{var r=e.b(),i=r=new a1(bw(n,r),h1());for(e=e.c();e!==h1();){var o=e.b();o=new a1(bw(n,o),h1()),i=i.h=o,e=e.c()}n=r}return new WU(t,n)}if(t instanceof JU)return r=t.tn,new JU(n=gw(n,t.Ol),t=mw(r));Ol(Fl(),"Should never happen!")}function gw(n,t){if(t instanceof gU){var e=t.Xm,r=t.Wm,i=t.wl,o=t.Ui;if(t=t.Wf,e===h1())var s=h1();else{var a=s=new a1(cw(s=e.b()),h1());for(e=e.c();e!==h1();){var u=e.b();u=new a1(cw(u),h1()),a=a.h=u,e=e.c()}}if(r===h1())r=h1();else{for(e=a=new a1(cw(a=r.b()),h1()),r=r.c();r!==h1();)u=new a1(cw(u=r.b()),h1()),e=e.h=u,r=r.c();r=a}if(i===h1())i=h1();else{for(e=a=new a1(bw(n,a=i.b()),h1()),i=i.c();i!==h1();)u=new a1(bw(n,u=i.b()),h1()),e=e.h=u,i=i.c();i=a}if(o===h1())o=h1();else{for(e=a=new a1(gw(n,a=o.b()),h1()),o=o.c();o!==h1();)u=new a1(gw(n,u=o.b()),h1()),e=e.h=u,o=o.c();o=a}return new gU(s,r,i,o,n=bw(n,t))}if(t instanceof mU){if(i=t.Zm,t=cw(t.Ym),i===h1())n=h1();else{for(s=o=new a1(bw(n,o=i.b()),h1()),i=i.c();i!==h1();)r=new a1(bw(n,r=i.b()),h1()),s=s.h=r,i=i.c();n=o}return new mU(t,n)}Ol(Fl(),"Should never happen!")}function mw(n){return n.ya(new RE(n=>cw(n)))}function $w(n,t){if(null!==t){var e=t.wq,r=t.Ns,i=t.an,o=t.bn,s=t.Bl;if(t=t.vq,s===h1())n=h1();else{var a=s.b(),u=a=new a1(ww(n,a),h1());for(s=s.c();s!==h1();){var c=s.b();c=new a1(ww(n,c),h1()),u=u.h=c,s=s.c()}n=a}return new HC(e,r,i,o,n,t)}throw new pq(t)}function kw(n,t){if(null!==t){var e=t.H();return n=pw(n,t.G()),bq(new gq,e,n)}throw new pq(t)}function xw(n,t){if(this.KL=0,this.LL=!1,this.LG=null,null===t)throw GT();this.LG=new MN(n)}function Ew(){this.PG=this.UG=this.RG=this.kA=this.jA=null,this.QG=!1,this.SG=null,this.TG=!1}function Dw(){}function Aw(n){return n=n.UG,sb||(sb=new $m),vZ(n,sb.WG)}qp.prototype=new I,qp.prototype.constructor=qp,qp.prototype.lo=function(n,t){if(null===n)throw new pq(n);var e=n.Lo,r=n.oq;n=n.Tj;var i=e,o=r;if(function(n){var t=xl(Al(),new(U(LC).j)([]));n.Wb=L1(new T1,t)}(t),Bv(e=GQ(t)))return qF();e=this.rV,r=n.hf;var s=()=>{var n=t.w,e=t.w,r=t.S,s=t.K;if(t.S=o,t.w=n,null===i)throw new pq(i);var a=i.vk;n=i.Tg;var u=a;a=function n(t,e){var r=e.up.ah(new RE(n=>{if(null!==n)return n.G().xb(new oz);throw new pq(n)})).ua();return e=ax(e=new DW(e.ar),new RE(e=>n(t,e))),vZ(r,e)}(this,o.zp);for(var c=null,f=null;u!==h1();){var h=u.b();for(h=Rp(this,h,t).x();h.y();){var l=new a1(h.t(),h1());null===f?c=l:f.h=l,f=l}u=u.c()}if(u=bZ(f=null===c?h1():c,new ez),c=bZ(f,new rz),f=bZ(f,new iz),"effekt"===o.km.pj){_h(),Al(),h=Xi().Ft,l=_h().r;var p=_h().r;h=xl(0,new(U(SM).j)([new $U(h,l,p)])),h=dZ(h1(),h)}else h=_h().r;var w=o.EH;if(w===h1())l=h1();else for(p=l=new a1((l=w.b()).Qn.Tg,h1()),w=w.c();w!==h1();){var d=w.b();d=new a1(d.Qn.Tg,h1()),p=p.h=d,w=w.c()}return n=new HC(n,l,f=vZ(h,f),c,u,a),t.K=s,t.w=e,t.S=r,n};if(t.ai){var u=nf(),c=1e6*+(0,ha().We)();c=Yc(u,c),u=u.Pa,s=s();var f=nf(),h=1e6*+(0,ha().We)();if(h=Yc(f,h),f=f.Pa,u=(-2147483648^(c=h-c|0))>(-2147483648^h)?(f-u|0)-1|0:f-u|0,u=1e-6*Qc(nf(),c,u),a(h=c=t.fe)!==K(z1))if((h=h.pa(e))instanceof LF)h=h.oa;else{if(qF()!==h)throw new pq(h);h=new T1}else f=Cl(Nl(),e),f^=f>>>16|0,h=null===(h=null===(h=h.cb.a[f&(-1+h.cb.a.length|0)])?null:zh(h,e,f))?new T1:h.Td;A1(c,e,r=R1(h,new Sj(r,u)),!1),e=s}else e=s();return new LF(new dM(n,i,o,e))},qp.prototype.JE=function(n,t){if(n instanceof TN)return n;Ps(t,"All capture unification variables should have been replaced by now.")},qp.prototype.Ce=function(n,t){return 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o=t=>{if(null!==t){var i=t.cn,o=t.xq,s=t.Os,a=t.Fl,u=t.Dl,c=t.El,f=t.Cl;if(c instanceof LF){if(t=c.oa,u.f()||wl(vl(),"Should have been moved to the continuation by core.Transformer"),s=new uK(u=new Ow),a===h1())a=h1();else{c=a.b();var h=c=new a1(_w(n,c),h1());for(a=a.c();a!==h1();){var l=a.b();l=new a1(_w(n,l),h1()),h=h.h=l,a=a.c()}a=c}return a=new a1(s,a),_h(),u=xl(Al(),new(U(Yz).j)([new HB(u)])),u=new UB(u=dZ(h1(),u)),s=_h().r,_h(),t=xl(Al(),new(U(aK).j)([Xw(n,t)])),f=new lH(s,t=dZ(h1(),t),f=nd(n,f,e,r)),new nA(i,o=new lH(o,a,f=new mK(u,f)))}if(qF()===c)return new nA(i,o=rd(n,new wU(o,s,a,u,f),e,r))}throw new pq(t)};if(i===h1())o=h1();else{var s=i.b(),a=s=new a1(o(s),h1());for(i=i.c();i!==h1();){var u=i.b();u=new a1(o(u),h1()),a=a.h=u,i=i.c()}o=s}return new Jz(t,o)}throw new pq(t)}function Yw(n,t,e,r){if(t instanceof DU){var i=t.tq,o=t.Bv,s=t.To,a=t.sq,u=t.Av;t=t.So,new Ow;var c=n=>{if(null!==n)return new uK(n=new Ow);throw new pq(n)};if(a===h1())h1();else{var f=a.b();f=new a1(c(f),h1());for(var h=a.c();h!==h1();){var l=h.b();l=new a1(c(l),h1()),f=f.h=l,h=h.c()}}if(s===h1())s=h1();else{for(f=c=new a1(_w(n,c=s.b()),h1()),s=s.c();s!==h1();)h=new a1(_w(n,h=s.b()),h1()),f=f.h=h,s=s.c();s=c}if(a===h1())a=h1();else{for(f=c=new a1(Xw(n,c=a.b()),h1()),a=a.c();a!==h1();)h=new a1(Xw(n,h=a.b()),h1()),f=f.h=h,a=a.c();a=c}if(a=vZ(s,a),u=Gw(n,u),t instanceof BM){if(s=t.Dv,t=(c=t.Uo).pq,(h=c.Ri)===h1())n=h1();else{for(f=c=new a1(td(n,c=h.b(),e,r),h1()),h=h.c();h!==h1();)l=new a1(td(n,l=h.b(),e,r),h1()),f=f.h=l,h=h.c();n=c}n=new Vz(s,new PE(t,n))}else{if(!(t instanceof OM))throw new pq(t);n=new Hz(t.Vo)}return new KB(i,o,a,u,n)}if(t instanceof AU)return new VB(t.Jz,t.Cv);throw new pq(t)}function _w(n,t){if(null!==t)return new cK(t.Kf,n=Gw(n,t.Pg));throw new pq(t)}function Xw(n,t){if(null!==t)return new sK(t.te,n=Jw(n,t.wh));throw new pq(t)}function Zw(n,t,e,r){if(t instanceof xU){var i=t.Wi;return new FB(i,n=Ww(n,t.Vi,e,r))}if(t instanceof EU)return new PB(i=t.yl,n=ed(n,t.xl,e,r));throw new pq(t)}function nd(n,t,e,r){if(t instanceof VU){var i=t.hk,o=t.Ml;if(i instanceof wU){var s=i.Ti,a=i.pg,u=i.If;if(o===h1())var c=h1();else{for(var f=o.b(),h=new a1(Qw(n,f,e,r),h1()),l=h,p=o.c();p!==h1();){var w=p.b(),d=new a1(Qw(n,w,e,r),h1());l=l.h=d,p=p.c()}c=h}var v=new Ag(e),y=new Ow,b=_D(v.Ba,new HB(y));v.Ba=b,b=null;var g=t=>{if(null!==t){var e=QD(v.Ba,t.te);return v.Ba=e,Xw(n,t)}throw new pq(t)};if(a===h1())var m=h1();else{for(var $=new a1(g(a.b()),h1()),k=$,x=a.c();x!==h1();){var E=new a1(g(x.b()),h1());k=k.h=E,x=x.c()}m=$}var D=nd(n,u,v.Ba,r);return new $K(new lH(s,new a1(new uK(y),m),D),c)}Ps(r,"Should not happen. Handle always take block literals as body.")}if(t instanceof PU){var A=t.fk;if(A instanceof wU){var I=A.Ti,j=A.pg,S=A.If,C=new Ag(e),z=new Ow,N=_D(C.Ba,new HB(z));C.Ba=N,N=null;var T=t=>{if(null!==t){var e=QD(C.Ba,t.te);return C.Ba=e,Xw(n,t)}throw new pq(t)};if(j===h1())var q=h1();else{for(var L=new a1(T(j.b()),h1()),R=L,M=j.c();M!==h1();){var B=new a1(T(M.b()),h1());R=R.h=B,M=M.c()}q=L}return new yK(new lH(I,new a1(new uK(z),q),nd(n,S,C.Ba,r)))}Ps(r,"Should not happen. Regions always take block literals as body.")}if(t instanceof LU){var O=t.di,F=t.Ll,P=t.ak,K=t.ci;if(null!==O){var V=ZD(e,O,r);if(P===h1())var H=h1();else{for(var G=P.b(),J=new a1(td(n,G,e,r),h1()),W=J,Q=P.c();Q!==h1();){var Y=Q.b(),_=new a1(td(n,Y,e,r),h1());W=W.h=_,Q=Q.c()}H=J}var X=id(n,K,e,r);if(null===X)throw new pq(X);var Z=X.G(),nn=X.H(),tn=Z,en=Ww(n,O,e,r);if(F===h1())var rn=h1();else{for(var on=F.b(),sn=new a1(Gw(n,on),h1()),an=sn,un=F.c();un!==h1();){var cn=un.b(),fn=new a1(Gw(n,cn),h1());an=an.h=fn,un=un.c()}rn=sn}return new hK(en,rn,vZ(vZ(new a1(V,nn),H),tn))}}if(t instanceof RU){var hn=t.mn,ln=t.ln;return new lK(hn,XD(e,hn),Gw(n,ln))}if(t instanceof FU){var pn=t.pn,wn=t.qn;return new vK(pn,XD(e,pn),td(n,wn,e,r))}if(t instanceof KU){var dn=t.gk,vn=t.$i,yn=od(dn,e,r),bn=nd(n,vn,yn,r);if(dn===h1())var gn=h1();else{for(var mn=dn.b(),$n=new a1(Zw(n,mn,yn,r),h1()),kn=$n,xn=dn.c();xn!==h1();){var En=xn.b(),Dn=new a1(Zw(n,En,yn,r),h1());kn=kn.h=Dn,xn=xn.c()}gn=$n}return new gK(gn,bn)}if(t instanceof HU){var An=t.Nl,In=t.bj;return new kK(An,nd(n,t.aj,e,r),nd(n,In,e,r))}if(t instanceof GU){var jn=t.rn,Sn=t.sn,Cn=t.ik,zn=new Ow,Nn=QD(_D(e,new HB(zn)),jn),Tn=new sK(jn,function(n,t){return n=eo().Cp,_h(),t=xl(Al(),new(U(nO).j)([t])),t=dZ(h1(),t),new nK(n,t)}(U$(),Gw(n,Sn.Go()))),qn=nd(n,Cn,Nn,r),Ln=ed(n,Sn,e,r),Rn=_h().r;_h();var Mn=xl(Al(),new(U(WB).j)([new uK(zn),Tn]));return new xK(Ln,new lH(Rn,dZ(h1(),Mn),qn))}if(t instanceof qU){var Bn=t.jn,On=t.kn,Fn=t.Kl,Pn=t.$j,Un=YD(e,Bn,XD(e,Fn).$s);return new fK(Bn,td(n,On,e,r),Fn,XD(e,Fn),nd(n,Pn,Un,r))}if(t instanceof OU){var Kn=t.dk,Vn=t.ek,Hn=td(n,t.on,e,r),Gn=t=>{if(null!==t){var i=t.H(),o=t.G();if(qe(),i instanceof FH||(Js(r,"Expected a constructor"),i=void 0),null===o)throw new pq(o);t=o.Ti;var s=o.If,a=vZ(o.vh,o.pg);if(a===h1())o=h1();else{o=a.b();var u=o=new a1(Hw(n,o),h1());for(a=a.c();a!==h1();){var c=a.b();c=new a1(Hw(n,c),h1()),u=u.h=c,a=a.c()}}return t=new lH(t,o,s=nd(n,s,e,r)),bq(new gq,i,t)}throw new pq(t)};if(Kn===h1())var Jn=h1();else{for(var Wn=new a1(Gn(Kn.b()),h1()),Qn=Wn,Yn=Kn.c();Yn!==h1();){var _n=new a1(Gn(Yn.b()),h1());Qn=Qn.h=_n,Yn=Yn.c()}Jn=Wn}if(Vn.f())var Xn=qF();else{var Zn=Vn.v();Xn=new LF(nd(n,Zn,e,r))}return new dK(Hn,Jn,Xn)}if(t instanceof BU){var nt=t.ck,tt=t.bk;return new wK(td(n,t.nn,e,r),nd(n,nt,e,r),nd(n,tt,e,r))}if(t instanceof UU)return new bK(td(n,t.ei,e,r));if(t instanceof MU)return new pK;throw new pq(t)}function td(n,t,e,r){if(t instanceof aH)return new bH(e=t.en,n=Gw(n,t.Cq));if(t instanceof hH)return new xH(e=t.Xf,n=Gw(n,t.hn));if(t instanceof cH){var i=t.Jl,o=t.Xo,s=t.fn;if(null!==s){if(i=Ww(n,i,e,r),o===h1())t=h1();else{var a=t=new a1(Gw(n,t=o.b()),h1());for(o=o.c();o!==h1();){var u=o.b();u=new a1(Gw(n,u),h1()),a=a.h=u,o=o.c()}}if(s===h1())n=h1();else{for(a=o=new a1(td(n,o=s.b(),e,r),h1()),s=s.c();s!==h1();)u=new a1(td(n,u=s.b(),e,r),h1()),a=a.h=u,s=s.c();n=o}return new mH(i,t,n)}}if(t instanceof uH&&(s=t.Wo,i=t.Hl,null!==(o=t.Il))){if(s=Gw(n,s),o===h1())n=h1();else{for(a=t=new a1(td(n,t=o.b(),e,r),h1()),o=o.c();o!==h1();)u=new a1(td(n,u=o.b(),e,r),h1()),a=a.h=u,o=o.c();n=t}return new gH(s,i,n)}if(t instanceof fH)return i=t.Yo,s=t.Dq,new kH(e=td(n,t.gn,e,r),i,n=Gw(n,s));if(t instanceof sH)return new yH(n=Ww(n,t.Gl,e,r));throw new pq(t)}function ed(n,t,e,r){if(t instanceof qM){var i=t.Xj,o=t.Ro,s=t.$m,a=t.Yj;if(null!==i){if(null===(t=id(n,a,e,r)))throw new pq(t);if(a=t.G(),t=t.H(),i=Ww(n,i,e,r),o===h1())o=h1();else{var u=o.b(),c=u=new a1(Gw(n,u),h1());for(o=o.c();o!==h1();){var f=o.b();f=new a1(Gw(n,f),h1()),c=c.h=f,o=o.c()}o=u}if(s===h1())n=h1();else{for(c=u=new a1(td(n,u=s.b(),e,r),h1()),s=s.c();s!==h1();)f=new a1(td(n,f=s.b(),e,r),h1()),c=c.h=f,s=s.c();n=u}return new mH(i,o,n=vZ(vZ(t,n),a))}}if(t instanceof YM)return new $H(n=nd(n,t.Yi,e,r));if(t instanceof zU)return td(n,t,e,r);throw new pq(t)}function rd(n,t,e,r){if(null!==t){var i=t.Ti,o=t.Oo,s=t.vh,a=t.pg;t=t.If;var u=new Ag(e);e=new Ow;var c=_D(u.Ba,new HB(e));if(u.Ba=c,c=null,c=n=>{if(null!==n){var t=n.te,e=new HB(n=new Ow),r=u.Ba.fp;return _h(),e=xl(Al(),new(U(Yz).j)([e])),e=dZ(h1(),e),t=r.gc(t,e),u.Ba=new WD(t),new uK(n)}throw new pq(n)},a===h1())c=h1();else{for(var f=a.b(),h=f=new a1(c(f),h1()),l=a.c();l!==h1();){var p=l.b();p=new a1(c(p),h1()),h=h.h=p,l=l.c()}c=f}if(c.s()!==o.s()&&dl(),s===h1())s=h1();else{for(f=o=new a1(_w(n,o=s.b()),h1()),s=s.c();s!==h1();)h=new a1(_w(n,h=s.b()),h1()),f=f.h=h,s=s.c();s=o}if(a===h1())a=h1();else{for(f=o=new a1(Xw(n,o=a.b()),h1()),a=a.c();a!==h1();)h=new a1(Xw(n,h=a.b()),h1()),f=f.h=h,a=a.c();a=o}return a=vZ(s,a),new lH(i,e=new a1(e=new uK(e),a=vZ(c,a)),n=nd(n,t,u.Ba,r))}throw new pq(t)}function id(n,t,e,r){var i=_h().r,o=new Ag(i);if(i=t=>{if(t instanceof dU){var i=ZD(e,t,r);return o.Ba=new a1(i,o.Ba),new pH(i=t.Jf,t=Jw(n,t.qg))}if(null!==t)return i=_h().r,o.Ba=new a1(new UB(i),o.Ba),Ww(n,t,e,r);throw new pq(t)},t===h1())i=h1();else{var s=t.b(),a=s=new a1(i(s),h1());for(t=t.c();t!==h1();){var u=t.b();u=new a1(i(u),h1()),a=a.h=u,t=t.c()}i=s}return s=gZ(o.Ba),bq(new gq,s,i)}function od(n,t,e){for(;;){if(n instanceof a1){var r=n,i=r.Ec;if(r=r.h,i instanceof xU){t=YD(t,(n=i).Wi,ZD(t,n.Vi,e).$s),n=r;continue}if(i instanceof EU){n=r;continue}}if(null===(e=_h().r)?null===n:e.d(n))return t;throw new pq(n)}}function sd(){this.tY="namer"}function ad(n,t,e){var r=e.w;e.w=t;n:if(!(t instanceof MJ||t instanceof BJ||t instanceof LJ))if(t instanceof TJ){var i=t.An,o=t.jp.sf,s=e.w,a=e.S,u=e.K,c=e.K,f=c.ba,h=Si(f.Yn(),o);c.ba=new MO(o,h,f);try{for(var l=i;!l.f();){var p=l.b();ad(n,p,e),l=l.c()}}finally{c.ba=f}e.K=u,e.w=s,e.S=a}else if(t instanceof EJ){var w=t.hi,d=t.gj;if(d instanceof ZK){var v=d.ni;if(null!==v){var y=v.yh,b=e.w;e.w=y;var g=bd(n,y,e);e.w=b;var m=mA(e,w);$A(e,w,new _J(m,new LF(g),t))}}}else if(t instanceof zJ){var $=t.Zf,k=t.Tl,x=t.zn,E=t.nk,D=t.Sq,A=mA(e,$),I=e.w,j=e.S,S=e.K,C=e.K,z=C.ba,N=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),T=new Ai(bC().u(),bC().u(),bC().u(),bC().u());C.ba=new RO(N,T,z);try{if(k===h1())var q=h1();else{for(var L=new a1(xd(k.b(),e),h1()),R=L,M=k.c();M!==h1();){var B=new a1(xd(M.b(),e),h1());R=R.h=B,M=M.c()}q=L}if(x===h1())var O=h1();else{for(var F=x.b(),P=new a1(hd(n,F,e),h1()),U=P,K=x.c();K!==h1();){var V=K.b(),H=new a1(hd(n,V,e),h1());U=U.h=H,K=K.c()}O=P}if(E===h1())var G=h1();else{for(var J=E.b(),W=new a1(ld(n,J,e),h1()),Q=W,Y=E.c();Y!==h1();){var _=Y.b(),X=new a1(ld(n,_,e),h1());Q=Q.h=X,Y=Y.c()}G=W}var Z=TA(e,new qE(()=>{if(AA(e,O),IA(e,G),D.f())return qF();var t=D.v();return new LF($d(n,t,e))}));if(Z.f())var nn=qF();else nn=new LF(Z.v().H());if(Z.f())var tn=qF();else tn=new LF(Z.v().G());var en=new eG(A,q,O,G,nn,tn,t)}finally{C.ba=z}e.K=S,e.w=I,e.S=j,$A(e,$,en)}else if(t instanceof NJ){var rn=t.ip,on=t.Kw,sn=mA(e,rn),an=e.w,un=e.S,cn=e.K,fn=e.K,hn=fn.ba,ln=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),pn=new Ai(bC().u(),bC().u(),bC().u(),bC().u());fn.ba=new RO(ln,pn,hn);try{if(on===h1())var wn=h1();else{for(var dn=new a1(xd(on.b(),e),h1()),vn=dn,yn=on.c();yn!==h1();){var bn=new a1(xd(yn.b(),e),h1());vn=vn.h=bn,yn=yn.c()}wn=dn}var gn=new nW(sn,wn,_h().r)}finally{fn.ba=hn}e.K=cn,e.w=an,e.S=un,kA(e,rn,gn)}else if(t instanceof RJ){var mn=t.mt,$n=t.uC,kn=t.vC,xn=e.w,En=e.S,Dn=e.K,An=e.K,In=An.ba,jn=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),Sn=new Ai(bC().u(),bC().u(),bC().u(),bC().u());An.ba=new RO(jn,Sn,In);try{if($n===h1())var Cn=h1();else{for(var zn=new a1(xd($n.b(),e),h1()),Nn=zn,Tn=$n.c();Tn!==h1();){var qn=new a1(xd(Tn.b(),e),h1());Nn=Nn.h=qn,Tn=Tn.c()}Cn=zn}}finally{An.ba=In}e.K=Dn,e.w=xn,e.S=En;var Ln=e.w,Rn=e.S,Mn=e.K,Bn=e.K,On=Bn.ba,Fn=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),Pn=new Ai(bC().u(),bC().u(),bC().u(),bC().u());Bn.ba=new RO(Fn,Pn,On);try{for(var Un=Cn;!Un.f();){var Kn=Un.b();DA(e,Kn),Un=Un.c()}var Vn=new gV(mA(e,mn),Cn,dd(n,kn,e))}finally{Bn.ba=On}e.K=Mn,e.w=Ln,e.S=Rn,kA(e,mn,Vn)}else if(t instanceof DJ){var Hn=t.gt,Gn=t.lC,Jn=t.kC,Wn=e.w,Qn=e.S,Yn=e.K,_n=e.K,Xn=_n.ba,Zn=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),nt=new Ai(bC().u(),bC().u(),bC().u(),bC().u());_n.ba=new RO(Zn,nt,Xn);try{if(Gn===h1())var tt=h1();else{for(var et=new a1(xd(Gn.b(),e),h1()),rt=et,it=Gn.c();it!==h1();){var ot=new a1(xd(it.b(),e),h1());rt=rt.h=ot,it=it.c()}tt=et}}finally{_n.ba=Xn}e.K=Yn,e.w=Wn,e.S=Qn;var st=e.w,at=e.S,ut=e.K,ct=e.K,ft=ct.ba,ht=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),lt=new Ai(bC().u(),bC().u(),bC().u(),bC().u());ct.ba=new RO(ht,lt,ft);try{for(var pt=tt;!pt.f();){var wt=pt.b();DA(e,wt),pt=pt.c()}var dt=new vV(mA(e,Hn),tt,md(n,Jn,e))}finally{ct.ba=ft}e.K=ut,e.w=st,e.S=at,kA(e,Hn,dt)}else if(t instanceof xJ){var vt=t.Oq,yt=t.jC,bt=e.w,gt=e.S,mt=e.K,$t=e.K,kt=$t.ba,xt=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),Et=new Ai(bC().u(),bC().u(),bC().u(),bC().u());$t.ba=new RO(xt,Et,kt);try{if(yt===h1())var Dt=h1();else{for(var At=new a1(xd(yt.b(),e),h1()),It=At,jt=yt.c();jt!==h1();){var St=new a1(xd(jt.b(),e),h1());It=It.h=St,jt=jt.c()}Dt=At}var Ct=new YH(mA(e,vt),Dt,_h().r)}finally{$t.ba=kt}e.K=mt,e.w=bt,e.S=gt,kA(e,vt,Ct)}else if(t instanceof qJ){var zt=t.Bn,Nt=function(n,t,e){var r=new Eg;if(r.ob)r=r.wb;else{if(null===r)throw GT();if(r.ob)r=r.wb;else{var i=n.w,o=n.S,s=n.K,a=n.K,u=a.ba,c=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),f=new Ai(bC().u(),bC().u(),bC().u(),bC().u());a.ba=new RO(c,f,u);try{if(e===h1())var h=h1();else{var l=new a1(xd(e.b(),n),h1());c=l;for(var p=e.c();p!==h1();){var w=new a1(xd(p.b(),n),h1());c=c.h=w,p=p.c()}h=l}}finally{a.ba=u}n.K=s,n.w=i,n.S=o,r=Dg(r,new XH(n=mA(n,t),h,null))}}return r}(e,zt,t.tC);kA(e,zt,Nt)}else if(t instanceof CJ){var Tt=t.Jw,qt=t.qC,Lt=e.w,Rt=e.S,Mt=e.K,Bt=e.K,Ot=Bt.ba,Ft=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),Pt=new Ai(bC().u(),bC().u(),bC().u(),bC().u());Bt.ba=new RO(Ft,Pt,Ot);try{if(qt===h1())var Ut=h1();else{for(var Kt=new a1(xd(qt.b(),e),h1()),Vt=Kt,Ht=qt.c();Ht!==h1();){var Gt=new a1(xd(Ht.b(),e),h1());Vt=Vt.h=Gt,Ht=Ht.c()}Ut=Kt}var Jt=new _H(mA(e,Tt),Ut)}finally{Bt.ba=Ot}e.K=Mt,e.w=Lt,e.S=Rt,kA(e,Tt,Jt)}else if(t instanceof jJ){var Wt=t.Iw,Qt=t.oC,Yt=e.w,_t=e.S,Xt=e.K,Zt=e.K,ne=Zt.ba,te=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),ee=new Ai(bC().u(),bC().u(),bC().u(),bC().u());Zt.ba=new RO(te,ee,ne);try{if(Qt===h1())var re=h1();else{for(var ie=new a1(xd(Qt.b(),e),h1()),oe=ie,se=Qt.c();se!==h1();){var ae=new a1(xd(se.b(),e),h1());oe=oe.h=ae,se=se.c()}re=ie}var ue=new ZJ(mA(e,Wt),re)}finally{Zt.ba=ne}e.K=Xt,e.w=Yt,e.S=_t,kA(e,Wt,ue)}else if(t instanceof AJ){var ce=t.ht,fe=t.hj,he=t.Pq,le=t.Qq,pe=t.hp,we=t.it,de=t.mk,ve=mA(e,fe),ye=kd(ce,e),be=e.w,ge=e.S,me=e.K,$e=e.K,ke=$e.ba,xe=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),Ee=new Ai(bC().u(),bC().u(),bC().u(),bC().u());$e.ba=new RO(xe,Ee,ke);try{if(he===h1())var De=h1();else{for(var Ae=new a1(xd(he.b(),e),h1()),Ie=Ae,je=he.c();je!==h1();){var Se=new a1(xd(je.b(),e),h1());Ie=Ie.h=Se,je=je.c()}De=Ae}if(le===h1())var Ce=h1();else{for(var ze=le.b(),Ne=new a1(hd(n,ze,e),h1()),Te=Ne,qe=le.c();qe!==h1();){var Le=qe.b(),Re=new a1(hd(n,Le,e),h1());Te=Te.h=Re,qe=qe.c()}Ce=Ne}if(pe===h1())var Me=h1();else{for(var Be=pe.b(),Oe=new a1(ld(n,Be,e),h1()),Fe=Oe,Pe=pe.c();Pe!==h1();){var Ue=Pe.b(),Ke=new a1(ld(n,Ue,e),h1());Fe=Fe.h=Ke,Pe=Pe.c()}Me=Oe}var Ve=TA(e,new qE(()=>(IA(e,Me),$d(n,we,e))));if(null===Ve)throw new pq(Ve);var He=Ve.G(),Ge=Ve.H(),Je=new KH(ve,De,Ce,Me,Ge,He,ye,de)}finally{$e.ba=ke}e.K=me,e.w=be,e.S=ge,$A(e,fe,Je)}else{if(!(t instanceof SJ)){if(t instanceof IJ){var We=t.jt,Qe=t.nC,Ye=t.Rq;if(Ye instanceof LF)break n;if(qF()===Ye){if(hO(We,Aw(yJ(e)))){var _e=function(n,t){return t=Hv(n=new Vv(n=Uv(Kv(),n.S.br.hf).Vn.Te()),t),Fv().la(t.Vn)?new LF(t=Wv(t)):qF()}(e,Qe);_e.f()&&Js(e,"Missing include: "+Qe);var Xe=_e.v();t.Rq=new LF(Xe)}else t.Rq=qF();break n}}throw new pq(t)}var Ze=t.kt,nr=t.pC,tr=new oW(mA(e,Ze),vd(n,nr,e));$A(e,Ze,tr),jA(e,tr)}e.w=r}function ud(n,t,e){var r=e.w;if(e.w=t,t instanceof gN){for(var i=t.vk,o=i;!o.f();){var s=o.b();ad(n,s,e),o=o.c()}fd(n,i,e)}else if(t instanceof KK){var a=t.li,u=t.yk;ad(n,a,e),ud(n,a,e),ud(n,u,e)}else if(t instanceof KJ){var c=t.Ug,f=t.Rw,h=new MN(c.sf);if(f.f())var l=qF();else{var p=f.v();l=new LF(dd(n,p,e))}$A(e,c,new rG(h,l))}else if(t instanceof PJ){var w=t.Xb,d=t.Qw,v=new MN(w.sf);if(d.f())var y=qF();else{var b=d.v();y=new LF(vd(n,b,e))}var g=new iW(v,y);$A(e,w,g);var m=g.na();xA(e,m)}else if(t instanceof MJ){var $=t.Sg,k=t.nt,x=t.Vl;if(k.f())var E=qF();else{var D=k.v();E=new LF(dd(n,D,e))}ud(n,x,e);var A=mA(e,$);$A(e,$,new XJ(A,E,t))}else if(t instanceof BJ){var I=t.ji,S=t.ot,C=t.pk;if(S.f())var z=qF();else{var N=S.v();z=new LF(dd(n,N,e))}ud(n,C,e);var T=new XQ(mA(e,I),z,t);$A(e,I,T);var q=T.na();xA(e,q)}else if(t instanceof LJ){var L=t.ok,R=t.lt,M=t.kp,B=t.Ul;if(R.f())var O=qF();else{var F=R.v();O=new LF(dd(n,F,e))}var P,K=SA(e,M);Q$(K)?P=K:Js(e,"Region needs to be a block."),ud(n,B,e);var V=mA(e,L);$A(e,L,new uQ(V,O,P,t))}else if(t instanceof EJ){var H=t.hi,G=t.ft,J=t.gj;if(J instanceof ZK)ud(n,J.ni,e);else{if(G.f())var W=qF();else{var Q=G.v();W=new LF(vd(n,Q,e))}ud(n,J,e);var Y=mA(e,H);$A(e,H,new _J(Y,W,t))}}else if(t instanceof zJ){var _=t.ii,X=de(e,t.Zf),Z=e.w,nn=e.S,tn=e.K,en=e.K,rn=en.ba,on=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),sn=new Ai(bC().u(),bC().u(),bC().u(),bC().u());en.ba=new RO(on,sn,rn);try{for(var an=X.QH;!an.f();){var un=an.b();DA(e,un),an=an.c()}AA(e,X.jD),IA(e,X.jx),ud(n,_,e)}finally{en.ba=rn}e.K=tn,e.w=Z,e.S=nn}else if(t instanceof AJ){var cn=t.mk,fn=de(e,t.hj),hn=e.w,ln=e.S,pn=e.K,wn=e.K,dn=wn.ba,vn=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),yn=new Ai(bC().u(),bC().u(),bC().u(),bC().u());wn.ba=new RO(vn,yn,dn);try{for(var bn=fn.WC;!bn.f();){var gn=bn.b();DA(e,gn),bn=bn.c()}AA(e,fn.XC),IA(e,fn.UC);for(var mn=cn;!mn.f();){var $n=mn.b();if($n instanceof iO)for(var kn=$n.Tq.Ri;!kn.f();){var xn=kn.b();ud(n,xn,e),kn=kn.c()}else if($n instanceof rO)ud(n,$n.lp,e);else if(!($n instanceof sO))throw new pq($n);mn=mn.c()}}finally{wn.ba=dn}e.K=pn,e.w=hn,e.S=ln}else if(t instanceof NJ){var En=t.ip,Dn=t.rC,An=ze(qe(),de(e,En),e),In=t=>{if(null!==t){var r=t.st,i=t.Ow,o=t.Pw,s=t.Mw,a=t.Nw,u=e.w;e.w=t,t=mA(e,r);var c=e.S,f=e.K,h=e.K,l=h.ba,p=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),w=new Ai(bC().u(),bC().u(),bC().u(),bC().u());h.ba=new RO(p,w,l);try{for(var d=An.wp;!d.f();){var v=d.b();DA(e,v),d=d.c()}if(i===h1())var y=h1();else{var b=new a1(xd(i.b(),e),h1());d=b;for(var g=i.c();g!==h1();){var m=new a1(xd(g.b(),e),h1());d=d.h=m,g=g.c()}y=b}if(o===h1())var $=h1();else{var k=o.b(),x=new a1(hd(n,k,e),h1());i=x;for(var E=o.c();E!==h1();){var D=E.b(),A=new a1(hd(n,D,e),h1());i=i.h=A,E=E.c()}$=x}if(s===h1())var I=h1();else{var j=s.b(),S=new a1(ld(n,j,e),h1());o=S;for(var C=s.c();C!==h1();){var z=C.b(),N=new a1(ld(n,z,e),h1());o=o.h=N,C=C.c()}I=S}if(I===h1())h1();else{var T=I.b().na();xA(e,T);for(var q=new a1(void 0,h1()),L=I.c();L!==h1();){var R=L.b().na();xA(e,R);var M=new a1(void 0,h1());q=q.h=M,L=L.c()}}var B=$d(n,a,e);if(null===B)throw new pq(B);var O=B.G();s=B.H();var F=new JH(t,vZ(An.wp,y),$,I,s,O,An);$A(e,r,F);var P=F}finally{h.ba=l}return e.K=f,e.S=c,e.w=u,P}throw new pq(t)};if(Dn===h1())var jn=h1();else{for(var Sn=new a1(In(Dn.b()),h1()),Cn=Sn,zn=Dn.c();zn!==h1();){var Nn=new a1(In(zn.b()),h1());Cn=Cn.h=Nn,zn=zn.c()}jn=Sn}An.oj=jn}else if(t instanceof TJ){var Tn=t.An,qn=t.jp.sf,Ln=e.w,Rn=e.S,Mn=e.K,Bn=e.K,On=Bn.ba,Fn=Si(On.Yn(),qn);Bn.ba=new MO(qn,Fn,On);try{for(var Pn=Tn;!Pn.f();){var Un=Pn.b();ud(n,Un,e),Pn=Pn.c()}}finally{Bn.ba=On}e.K=Mn,e.w=Ln,e.S=Rn}else if(!(t instanceof RJ||t instanceof DJ))if(t instanceof xJ){var Kn=t.Hw,Vn=de(e,t.Oq),Hn=t=>{if(null!==t){var r=t.et,i=t.iC;t=t.hC;var o=e.w,s=e.S,a=e.K,u=e.K,c=u.ba,f=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),h=new Ai(bC().u(),bC().u(),bC().u(),bC().u());u.ba=new RO(f,h,c);try{var l=mA(e,r);if(i===h1())var p=h1();else{var w=i.b(),d=new a1(xd(w,e),h1());w=d;for(var v=i.c();v!==h1();){var y=new a1(xd(v.b(),e),h1());w=w.h=y,v=v.c()}p=d}var b=new FH(l,vZ(Vn.Bt,p),null,Vn)}finally{u.ba=c}return e.K=a,e.w=o,e.S=s,$A(e,r,b),b.Hk=cd(n,t,b,e),b}throw new pq(t)};if(Kn===h1())var Gn=h1();else{for(var Jn=new a1(Hn(Kn.b()),h1()),Wn=Jn,Qn=Kn.c();Qn!==h1();){var Yn=new a1(Hn(Qn.b()),h1());Wn=Wn.h=Yn,Qn=Qn.c()}Gn=Jn}Vn.gx=Gn}else if(t instanceof qJ){var _n=t.Bn,Xn=t.sC,Zn=de(e,t.Bn),nt=new FH(mA(e,_n),Zn.Dt,null,Zn),tt=pO(_n,e);$A(e,tt,nt),Zn.Ct=nt,nt.Hk=cd(n,Xn,nt,e)}else if(!(t instanceof CJ||t instanceof jJ||t instanceof SJ||t instanceof IJ))if(t instanceof YK){var et=t.cm,rt=t.dm,it=t.bm,ot=e.w,st=e.S,at=e.K,ut=e.K,ct=ut.ba,ft=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),ht=new Ai(bC().u(),bC().u(),bC().u(),bC().u());ut.ba=new RO(ft,ht,ct);try{for(var lt=et;!lt.f();){var pt=lt.b();wd(n,pt,e),lt=lt.c()}ud(n,rt,e)}finally{ut.ba=ct}e.K=at,e.w=ot,e.S=st;var wt=e.w,dt=e.S,vt=e.K,yt=e.K,bt=yt.ba,gt=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),mt=new Ai(bC().u(),bC().u(),bC().u(),bC().u());yt.ba=new RO(gt,mt,bt);try{ud(n,it,e)}finally{yt.ba=bt}e.K=vt,e.w=wt,e.S=dt}else if(t instanceof eV){var $t=t.im,kt=t.gm,xt=t.hm,Et=e.w,Dt=e.S,At=e.K,It=e.K,jt=It.ba,St=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),Ct=new Ai(bC().u(),bC().u(),bC().u(),bC().u());It.ba=new RO(St,Ct,jt);try{for(var zt=$t;!zt.f();){var Nt=zt.b();wd(n,Nt,e),zt=zt.c()}ud(n,kt,e)}finally{It.ba=jt}e.K=At,e.w=Et,e.S=Dt;var Tt=e.w,qt=e.S,Lt=e.K,Rt=e.K,Mt=Rt.ba,Bt=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),Ot=new Ai(bC().u(),bC().u(),bC().u(),bC().u());Rt.ba=new RO(Bt,Ot,Mt);try{if(!xt.f()){var Ft=xt.v();ud(n,Ft,e)}}finally{Rt.ba=Mt}e.K=Lt,e.w=Tt,e.S=qt}else if(t instanceof UK){var Pt=t.In,Ut=e.w,Kt=e.S,Vt=e.K,Ht=e.K,Gt=Ht.ba,Jt=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),Wt=new Ai(bC().u(),bC().u(),bC().u(),bC().u());Ht.ba=new RO(Jt,Wt,Gt);try{ud(n,Pt,e)}finally{Ht.ba=Gt}e.K=Vt,e.w=Ut,e.S=Kt}else if(t instanceof nV){var Qt=t.nj,Yt=t.mj;fd(n,Yt,e);var _t=e.w,Xt=e.S,Zt=e.K,ne=e.K,te=ne.ba,ee=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),re=new Ai(bC().u(),bC().u(),bC().u(),bC().u());ne.ba=new RO(ee,re,te);try{for(var ie=Yt;!ie.f();){var oe=ie.b().Cn;if(!oe.f()){var se=oe.v(),ae=ld(n,se,e);jA(e,ae)}ie=ie.c()}ud(n,Qt,e)}finally{ne.ba=te}e.K=Zt,e.w=_t,e.S=Xt}else if(t instanceof WJ){var ue=t.Ek,ce=t.Dk,fe=new iW(new MN(ue.sf),new LF(Xi().pD));$A(e,ue,fe);var he=e.w,le=e.S,pe=e.K,ve=e.K,ye=ve.ba,be=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),ge=new Ai(bC().u(),bC().u(),bC().u(),bC().u());ve.ba=new RO(be,ge,ye);try{jA(e,fe),ud(n,ce,e)}finally{ve.ba=ye}e.K=pe,e.w=he,e.S=le}else if(t instanceof TK){var me=t.yh,$e=t.Wl,ke=e.w;e.w=me;var xe=ze(qe(),bd(n,me,e).Lc,e);e.w=ke;for(var Ee=$e;!Ee.f();){var De=Ee.b();if(null===De)throw new pq(De);var Ae=De.$l,Ie=De.Gn,je=De.Hn,Se=De.Zl,Ce=De.wk,Ne=De.Fn,Te=e.w;e.w=De;n:{for(var Le=xe.oj;!Le.f();){if(Le.b().Yg.Z()===Ae.Yd){var Re=new LF(Le.b());break n}Le=Le.c()}Re=qF()}if(Re.f())var Me=qF();else{var Be=Re.v();we(e,Ae,Be),Me=new LF(void 0)}if(Me.f()){var Oe=new AS(xl(Al(),new(U(DF).j)(["Operation "," is not part of interface ","."]))),Fe=kl(Al(),new j([Ae,xe]));Ws(e,new Cj(Oe,Fe))}else Me.v();var Pe=e.w,Ue=e.S,Ke=e.K,Ve=e.K,He=Ve.ba,Ge=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),Je=new Ai(bC().u(),bC().u(),bC().u(),bC().u());Ve.ba=new RO(Ge,Je,He);try{var We=(n=>t=>xd(t,n))(e);if(Ie===h1())h1();else for(var Qe=new a1(We(Ie.b()),h1()),Ye=Ie.c();Ye!==h1();){var _e=new a1(We(Ye.b()),h1());Qe=Qe.h=_e,Ye=Ye.c()}var Xe=(t=>e=>hd(n,e,t))(e);if(je===h1())var Ze=h1();else{for(var nr=new a1(Xe(je.b()),h1()),tr=nr,er=je.c();er!==h1();){var rr=new a1(Xe(er.b()),h1());tr=tr.h=rr,er=er.c()}Ze=nr}var ir=(t=>e=>ld(n,e,t))(e);if(Se===h1())var or=h1();else{for(var sr=new a1(ir(Se.b()),h1()),ar=sr,ur=Se.c();ur!==h1();){var cr=new a1(ir(ur.b()),h1());ar=ar.h=cr,ur=ur.c()}or=sr}AA(e,Ze),IA(e,or),$A(e,Ne,new sW(e.S)),ud(n,Ce,e)}finally{Ve.ba=He}e.K=Ke,e.w=Pe,e.S=Ue,e.w=Te,Ee=Ee.c()}}else if(t instanceof vN){var fr=t.sk,hr=t.Xl,lr=pd(n,t.Yl,e),pr=e.w,wr=e.S,dr=e.K,vr=e.K,yr=vr.ba,br=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),gr=new Ai(bC().u(),bC().u(),bC().u(),bC().u());vr.ba=new RO(br,gr,yr);try{for(var mr=lr;!mr.f();){var $r=mr.b();EA(e,$r),mr=mr.c()}for(var kr=fr;!kr.f();){var xr=kr.b();wd(n,xr,e),kr=kr.c()}var Er=null;Er=v_();for(var Dr=lr;!Dr.f();){var Ar=Dr.b();if(Er.la(Ar.lm)){Wi();var Ir=Ji(new AS(xl(Al(),new(U(DF).j)(["Patterns have to be linear: names can only occur once, but "," shows up multiple times."]))),kl(Al(),new j([Ar.lm])));Os(e,Ir)}var jr=CA(e,Ar.lm);if(!jr.f()){Wi();var Sr=Ji(new AS(xl(Al(),new(U(DF).j)(["Pattern binds variable ",". Maybe you meant to match on equally named constructor of type ","?"]))),kl(Al(),new j([Ar.lm,jr.b().xp])));Ks(e,Sr)}var Cr=Er.zg(Ar.lm);Er=Cr,Cr=null,Dr=Dr.c()}TA(e,new qE(()=>{ud(n,hr,e)}))}finally{vr.ba=yr}e.K=dr,e.w=pr,e.S=wr}else if(t instanceof GK){var zr=t.zk,Nr=t.Ak,Tr=t.mi,qr=t.zh,Lr=e.w,Rr=e.S,Mr=e.K,Br=e.K,Or=Br.ba,Fr=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),Pr=new Ai(bC().u(),bC().u(),bC().u(),bC().u());Br.ba=new RO(Fr,Pr,Or);try{if(zr===h1())h1();else for(var Ur=new a1(xd(zr.b(),e),h1()),Kr=zr.c();Kr!==h1();){var Vr=new a1(xd(Kr.b(),e),h1());Ur=Ur.h=Vr,Kr=Kr.c()}if(Nr===h1())var Hr=h1();else{for(var Gr=Nr.b(),Jr=new a1(hd(n,Gr,e),h1()),Wr=Jr,Qr=Nr.c();Qr!==h1();){var Yr=Qr.b(),_r=new a1(hd(n,Yr,e),h1());Wr=Wr.h=_r,Qr=Qr.c()}Hr=Jr}if(Tr===h1())var Xr=h1();else{for(var Zr=Tr.b(),ni=new a1(ld(n,Zr,e),h1()),ti=ni,ei=Tr.c();ei!==h1();){var ri=ei.b(),ii=new a1(ld(n,ri,e),h1());ti=ti.h=ii,ei=ei.c()}Xr=ni}AA(e,Hr),IA(e,Xr),ud(n,qr,e)}finally{Br.ba=Or}e.K=Mr,e.w=Lr,e.S=Rr}else if(t instanceof JK){var oi=t.Jn,si=t.ij;if(!oi.f())kd(oi.v(),e);ud(n,si,e)}else if(t instanceof QJ){var ai=t.tp;ud(n,t.fm,e),function(n,t){var e=n.w;n.w=t;var r=EI(n.K,t,new RE(n=>n instanceof VH));if(r.f()){var i=xl(Al(),new(U(DF).j)(["Cannot resolve field access ",""]));i=new AS(i);var o=kl(Al(),new j([t]));Ws(n,new Cj(i,o))}r=new dV(r),we(n,t,r),n.w=e}(e,ai)}else if(t instanceof JJ){var ui=t.em,ci=t.sp,fi=t.lj,hi=t.jj;ud(n,t.kj,e),function(n,t){var e=n.w;n.w=t;var r=function(n,t,e){return yI(n,t.rk,n.ba,new RE(n=>{var r=n.Ap.sb(t.Yd,new qE(()=>v_())).yb(e);return n=Ci(n).sb(t.Yd,new qE(()=>v_())).yb(e),r.za(n)}))}(n.K,t,new RE(n=>Q$(n)));if(r.f()){var i=xl(Al(),new(U(DF).j)(["Cannot resolve function ",""]));i=new AS(i);var o=kl(Al(),new j([t.Yd]));Ws(n,new Cj(i,o))}r=new dV(r),we(n,t,r),n.w=e}(e,ui);for(var li=ci;!li.f();){var pi=li.b();dd(n,pi,e),li=li.c()}fd(n,fi,e),fd(n,hi,e)}else if(t instanceof GJ){var wi=t.tt,di=t.Kn,vi=t.Xq,yi=t.Ck,bi=t.Bk;if(wi.f())var gi=qF();else{var mi=wi.v();gi=new LF(bd(n,mi,e))}!function(n,t,e){var r=n.w;if(n.w=e,t instanceof LF){t=t.oa;var i=ze(qe(),t.Lc,n.Xc).oj;n:for(;;){if(i.f()){t=h1();break}var o=i.b();if(t=i.c(),o.Yg.Z()===e.Yd==!1)i=t;else for(;;){if(t.f())t=i;else{if(t.b().Yg.Z()===e.Yd!=!1){t=t.c();continue}o=t,t=new a1(i.b(),h1());var s=i.c();for(i=t;s!==o;){var a=new a1(s.b(),h1());i=i.h=a,s=s.c()}for(s=o=o.c();!o.f();){if(o.b().Yg.Z()===e.Yd==!1){for(;s!==o;)a=new a1(s.b(),h1()),i=i.h=a,s=s.c();s=o.c()}o=o.c()}s.f()||(i.h=s)}break n}}t.f()?t=_h().r:(_h(),t=xl(Al(),new(U(uY).j)([bE(gE(),t)])),t=dZ(h1(),t))}else{if(qF()!==t)throw new pq(t);t=function(n,t,e){return yI(n,t,n.ba,new RE(n=>Ci(n).sb(e,new qE(()=>v_()))))}(n.K,e.rk,e.Yd)}t.f()&&(i=new AS(i=xl(Al(),new(U(DF).j)(["Cannot resolve effect operation ",""]))),o=kl(Al(),new j([e])),Ws(n,new Cj(i,o))),t=new dV(t),we(n,e,t),n.w=r}(e,gi,di);for(var $i=vi;!$i.f();){var ki=$i.b();dd(n,ki,e),$i=$i.c()}fd(n,yi,e),fd(n,bi,e)}else if(t instanceof WK){var xi=t.qp,Ei=t.Wg,Di=t.Vg;!function(n,t,e){var r=n.w;n.w=t,e.q(t),n.w=r}(e,t.Ah,new RE(t=>{if(t instanceof kJ)!function(n,t){var e=n.w;n.w=t;var r=EI(n.K,t,new RE(n=>!(n instanceof JH)));if((r=function(n,t,e){for(;;){var r=e,i=_h().r;if(null===i?null===r:i.d(r))return _h(),new hM(n=_h().r);if(r instanceof a1){if(r=(i=r).Ec,i=i.h,r.f()){e=i;continue}if(r.ye(new RE(n=>Q$(n)&&!ZA(n)))){if(_h(),e===h1())n=h1();else for(n=e.b(),t=n=new a1(n.xb(new sN),h1()),e=e.c();e!==h1();)r=new a1((r=e.b()).xb(new sN),h1()),t=t.h=r,e=e.c();t=n;n:for(;;){if(t.f()){n=h1();break}if(e=t.b(),n=t.c(),!0==!!e.f())t=n;else for(;;){if(n.f())n=t;else{if(!0!=!!n.b().f()){n=n.c();continue}for(e=n,n=new a1(t.b(),h1()),r=t.c(),t=n;r!==e;)i=new a1(r.b(),h1()),t=t.h=i,r=r.c();for(r=e=e.c();!e.f();){if(!0==!!e.b().f()){for(;r!==e;)i=new a1(r.b(),h1()),t=t.h=i,r=r.c();r=e.c()}e=e.c()}r.f()||(t.h=r)}break n}}return new hM(n)}if(r.fg(new RE(n=>rk(n)||ZA(n)))){if(r.fg(new RE(n=>Q$(n)&&!ZA(n)))&&Ps(n,"Should not happen by construction."),1===r.Q())return _h(),new fM(n=r.b());r=new AS(r=xl(Al(),new(U(DF).j)(["Multiple values with the same name "," in one scope. Values cannot be overloaded."]))),i=kl(Al(),new j([t])),Ws(n,new Cj(r,i))}}Ps(n,"Should not happen")}}(n,t,r))instanceof fM)we(n,t,r.no);else{if(!(r instanceof hM))throw new pq(r);if((r=r.qm).f()){var i=EI(n.K,t,new RE(()=>!0)),o=Cb().zj;i=YS(i,o);n:{for(o=i;!o.f();){if(o.b()instanceof JH){o=!0;break n}o=o.c()}o=!1}if(o){o=new AS(o=xl(Al(),new(U(DF).j)(["There is an equally named effect operation. Use syntax `do ","() to call it.`"])));var s=kl(Al(),new j([t]));Hs(n,new Cj(o,s))}n:{for(;!i.f();){if(i.b()instanceof VH){i=!0;break n}i=i.c()}i=!1}i&&(i=new AS(i=xl(Al(),new(U(DF).j)(["There is an equally named field. Use syntax `obj."," to access it.`"]))),o=kl(Al(),new j([t])),Hs(n,new Cj(i,o))),i=new AS(i=xl(Al(),new(U(DF).j)(["Cannot find a function named `","`."]))),o=kl(Al(),new j([t])),Ws(n,new Cj(i,o))}r=new dV(r),we(n,t,r)}n.w=e}(e,t.yn);else{if(!(t instanceof SK))throw new pq(t);ud(n,t.Sl,e)}}));for(var Ii=xi;!Ii.f();){var ji=Ii.b();dd(n,ji,e),Ii=Ii.c()}fd(n,Ei,e),fd(n,Di,e)}else if(t instanceof YJ)SA(e,t.Gk);else if(t instanceof HJ){var zi=t.pp,Ni=t.am,Ti=SA(e,zi);if(Ti instanceof XQ||Ti instanceof uQ)ud(n,Ni,e);else{if(Ti instanceof XJ||Ti instanceof rG){var qi=new AS(xl(Al(),new(U(DF).j)(["Can only assign to mutable variables, but "," is a constant."]))),Li=kl(Al(),new j([zi.Yd]));Ws(e,new Cj(qi,Li))}Ti instanceof DV&&Js(e,"Trying to assign to a wildcard, which is not allowed."),Js(e,"Can only assign to mutable variables.")}}else t instanceof rV?dd(n,t,e):t instanceof DH?yd(n,t,e):t instanceof wO?SA(e,t):fd(n,t,e);e.w=r}function cd(n,t,e,r){var i=r.w,o=r.S,s=r.K,a=r.K,u=a.ba,c=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),f=new Ai(bC().u(),bC().u(),bC().u(),bC().u());a.ba=new RO(c,f,u);try{for(var h=e.yt;!h.f();){var l=h.b();DA(r,l),h=h.c()}if(t===h1())var p=h1();else{var w=new a1(hd(n,t.b(),r),h1());c=w;for(var d=t.c();d!==h1();){var v=new a1(hd(n,d.b(),r),h1());c=c.h=v,d=d.c()}p=w}}finally{a.ba=u}if(r.K=s,r.w=i,r.S=o,n=n=>{if(null!==n){var t=n.H();return n=pO(n.G().Ug,r),t=new VH(mA(r,n),t,e),$A(r,n,t),t}throw new pq(n)},(o=_S(p,t))===h1())return h1();for(i=t=new a1(n(t=o.b()),h1()),o=o.c();o!==h1();)s=new a1(n(s=o.b()),h1()),i=i.h=s,o=o.c();return t}function fd(n,t,e){if(Vb(t))for(t=t.B();t.y();){var r=t.t();W$(r)?ud(n,r,e):fd(n,r,e)}else Lq(t)&&t.Ja(new RE(t=>{fd(n,t,e)}))}function hd(n,t,e){var r=new MN(t.Ug.sf),i=t.Rw;return i.f()?n=qF():n=new LF(dd(n,i=i.v(),e)),r=new rG(r,n),we(e,t.Ug,r),r}function ld(n,t,e){var r=new MN(t.Xb.sf),i=t.Qw;return i.f()?n=qF():n=new LF(vd(n,i=i.v(),e)),r=new iW(r,n),we(e,t.Xb,r),r}function pd(n,t,e){if(t instanceof RK||t instanceof MK)return _h().r;if(t instanceof OJ){var r=new MN((n=t.Dn).sf);return we(e,n,r=new rG(r,t=qF())),_h(),e=xl(Al(),new(U(bG).j)([r])),dZ(h1(),e)}if(t instanceof FJ){if(r=t.rt,t=t.En,!(SA(e,r)instanceof FH)){var i=e.w;e.w=r,Os(e,"Can only pattern match on constructors of data types."),e.w=i}for(r=t,i=t=null;r!==h1();){var o=r.b();for(o=pd(n,o,e).x();o.y();){var s=new a1(o.t(),h1());null===i?t=s:i.h=s,i=s}r=r.c()}return null===t?h1():t}throw new pq(t)}function wd(n,t,e){if(t instanceof qK)ud(n,t.ki,e);else{if(!(t instanceof LK))throw new pq(t);var r=t.tk;for(ud(n,t.uk,e),n=pd(n,r,e);!n.f();)EA(e,t=n.b()),n=n.c()}}function dd(n,t,e){var r=e.w;e.w=t;n:{if(t instanceof tQ){var i=t.DC,o=zA(e,t.Tw);if(o instanceof mV){if(i===h1())n=h1();else{var s=i.b(),a=s=new a1(dd(n,s,e),h1());for(i=i.c();i!==h1();){var u=i.b();u=new a1(dd(n,u,e),h1()),a=a.h=u,i=i.c()}n=s}n=new xV(o,n);break n}if(o instanceof ZH){i.f()||Ws(e,new Cj(n=new AS(n=xl(Al(),new(U(DF).j)(["Type variables cannot be applied, 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i=t.eC,o=t.fC,s=t.bC,a=t.dC,u=t.cC,c=e.w,f=e.S,h=e.K,l=e.K,p=l.ba,w=new Ai(bC().u(),bC().u(),bC().u(),bC().u()),d=new Ai(bC().u(),bC().u(),bC().u(),bC().u());l.ba=new RO(w,d,p);try{if(i===h1())var v=h1();else{var y=new a1(xd(i.b(),e),h1());w=y;for(var b=i.c();b!==h1();){var g=new a1(xd(b.b(),e),h1());w=w.h=g,b=b.c()}v=y}if(o===h1())var m=h1();else{var $=o.b(),k=new a1(dd(n,$,e),h1());i=k;for(var x=o.c();x!==h1();){var E=x.b(),D=new a1(dd(n,E,e),h1());i=i.h=D,x=x.c()}m=k}var A=new Ag(_h().r);if(o=t=>{if(null!==t){var r=t.H();return t=t.G(),r.f()?r=qF():r=new LF(new MN(r=r.v().Z())),r=r.f()?GH():r.v(),r=aP(A.Ba,new tW(r)),A.Ba=r,vd(n,t,e)}throw new pq(t)},s===h1())var I=h1();else{var j=s.b(),S=new a1(o(j),h1());j=S;for(var C=s.c();C!==h1();){var z=new a1(o(C.b()),h1());j=j.h=z,C=C.c()}I=S}for(var N=XA(md(n,u,e)),T=_A(N);!T.f();){var q=T.b().Lc.Y(),L=aP(A.Ba,new tW(q));A.Ba=L,L=null,T=T.c()}for(var R=A.Ba;!R.f();){var M=R.b();xA(e,M),R=R.c()}var B=dd(n,a,e),O=new 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xn=h1();else{for(var En=mn.b(),Dn=new a1(Md(t,En,r,i),h1()),An=Dn,In=mn.c();In!==h1();){var jn=In.b(),Sn=new a1(Md(t,jn,r,i),h1());An=An.h=Sn,In=In.c()}xn=Dn}var Cn=xn.rb(a,u),zn=Td(t,$n,r,i),Nn=kn.ua();if(Nn===h1())var Tn=h1();else{for(var qn=Nn.b(),Ln=new a1(Td(t,qn,r,i),h1()),Rn=Ln,Mn=Nn.c();Mn!==h1();){var Bn=Mn.b(),On=new a1(Td(t,Bn,r,i),h1());Rn=Rn.h=On,Mn=Mn.c()}Tn=Ln}return kl(0,new j([Cn,zn,Tn.rb(a,u)])).rb(a,u)}if(s instanceof XK){var Fn=s.Nn,Pn=s.Ln,Un=s.Mn;Al();var Kn=n(t,Fn,r,i);if(Pn===h1())var Vn=h1();else{for(var Hn=Pn.b(),Gn=new a1(t.uJ(Hn,r,i),h1()),Jn=Gn,Wn=Pn.c();Wn!==h1();){var Qn=Wn.b(),Yn=new a1(t.uJ(Qn,r,i),h1());Jn=Jn.h=Yn,Wn=Wn.c()}Vn=Gn}var _n=Vn.rb(a,u),Xn=Un.ua();if(Xn===h1())var Zn=h1();else{for(var nt=Xn.b(),tt=new a1(Td(t,nt,r,i),h1()),et=tt,rt=Xn.c();rt!==h1();){var it=rt.b(),ot=new a1(Td(t,it,r,i),h1());et=et.h=ot,rt=rt.c()}Zn=tt}return kl(0,new j([Kn,_n,Zn.rb(a,u)])).rb(a,u)}if(s instanceof nV){var st=s.nj,at=s.mj;Al();var ut=Td(t,st,r,i);if(at===h1())var ct=h1();else{for(var ft=at.b(),ht=new a1(Ld(t,ft,r,i),h1()),lt=ht,pt=at.c();pt!==h1();){var wt=pt.b(),dt=new a1(Ld(t,wt,r,i),h1());lt=lt.h=dt,pt=pt.c()}ct=ht}return kl(0,new j([ut,ct.rb(a,u)])).rb(a,u)}return s instanceof WJ?Td(t,s.Dk,r,i):s instanceof GK?Td(t,s.zh,r,i):s instanceof ZK?Rd(t,s.ni,r,i):void Ol(Fl(),"Should never happen!")}),r)},Nd=function n(t,e,r,i){var o=t.OP(r,i);return t.sl(e,new RE(s=>{if(o.U(e))return o.q(e);var a=t.u(),u=new ME((n,e)=>t.Op(n,e));if(s instanceof zJ)return Td(t,s.ii,r,i);if(s instanceof MJ)return Td(t,s.Vl,r,i);if(s instanceof LJ)return Td(t,s.Ul,r,i);if(s instanceof BJ)return Td(t,s.pk,r,i);if(s instanceof EJ)return zd(t,s.gj,r,i);if(s instanceof TJ){var c=s.An;if(c===h1())s=h1();else{s=c.b();var f=s=new a1(n(t,s,r,i),h1());for(c=c.c();c!==h1();){var h=c.b();h=new a1(n(t,h,r,i),h1()),f=f.h=h,c=c.c()}}return s.rb(a,u)}if(s instanceof NJ||s instanceof xJ||s instanceof qJ||s instanceof RJ||s instanceof DJ||s instanceof CJ)return a;if(s instanceof AJ){if((c=s.mk)===h1())s=h1();else for(s=c.b(),f=s=new a1(Bd(t,s,r,i),h1()),c=c.c();c!==h1();)h=c.b(),h=new a1(Bd(t,h,r,i),h1()),f=f.h=h,c=c.c();return s.rb(a,u)}if(s instanceof SJ||s instanceof jJ||s instanceof IJ)return a;Ol(Fl(),"Should never happen!")}),r)},Td=function n(t,e,r,i){var o=t.DS(r,i);return t.sl(e,new RE(s=>{if(o.U(e))return o.q(e);var a=t.u(),u=new ME((n,e)=>t.Op(n,e));if(s instanceof KK){var c=s.li;return s=s.yk,kl(Al(),new j([Nd(t,c,r,i),n(t,s,r,i)])).rb(a,u)}return s instanceof VK?(c=s.mp,s=s.np,kl(Al(),new j([zd(t,c,r,i),n(t,s,r,i)])).rb(a,u)):s instanceof HK?zd(t,s.op,r,i):s instanceof UK?n(t,s.In,r,i):void Ol(Fl(),"Should never happen!")}),r)};function qd(n,t,e,r){var i=uf().Oa;n.sl(t,new RE(o=>{if(i.U(t))return i.q(t);var s=n.u();if(null!==o){var a=o.vk;if(a===h1())o=h1();else{o=a.b();var u=o=new a1(Nd(n,o,e,r),h1());for(a=a.c();a!==h1();){var c=a.b();c=new 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un=e.im,cn=e.gm,fn=e.hm;if(un===h1())var hn=h1();else{for(var ln=new a1(Gd(t,un.b(),r),h1()),pn=ln,wn=un.c();wn!==h1();){var dn=new a1(Gd(t,wn.b(),r),h1());pn=pn.h=dn,wn=wn.c()}hn=ln}var vn=Pd(t,cn,r);if(fn.f())var yn=qF();else{var bn=fn.v();yn=new LF(Pd(t,bn,r))}a=new eV(hn,vn,yn)}else if(e instanceof XK){var gn=e.Ln,mn=e.Mn,$n=n(t,e.Nn,r);if(gn===h1())var kn=h1();else{for(var xn=new a1(Hd(t,gn.b(),r),h1()),En=xn,Dn=gn.c();Dn!==h1();){var An=new a1(Hd(t,Dn.b(),r),h1());En=En.h=An,Dn=Dn.c()}kn=xn}if(mn.f())var In=qF();else{var jn=mn.v();In=new LF(Pd(t,jn,r))}a=new XK($n,kn,In)}else if(e instanceof nV){var Sn=e.mj,Cn=Pd(t,e.nj,r);if(Sn===h1())var zn=h1();else{for(var Nn=new a1(Ud(t,Sn.b(),r),h1()),Tn=Nn,qn=Sn.c();qn!==h1();){var Ln=new a1(Ud(t,qn.b(),r),h1());Tn=Tn.h=Ln,qn=qn.c()}zn=Nn}a=new nV(Cn,zn)}else if(e instanceof WJ){a=new WJ(e.Ek,Pd(t,e.Dk,r))}else if(e instanceof GK){a=new GK(e.zk,e.Ak,e.mi,Pd(t,e.zh,r))}else if(e instanceof ZK){a=new ZK(Kd(t,e.ni,r))}else Ol(Fl(),"Should 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aV(t,e,a,u,c,f)}}throw new pq(i)}(n,t,e,r):t instanceof uV&&e instanceof uV?function(n,t,e,r){var i=bq(new gq,t,e);e=i.dg;var o=i.vg;if(null!==e&&(t=e.Lc,e=e.tf,null!==o)){if(i=o.Lc,o=o.tf,null===t?null!==i:!zi(t,i)){Wi();var s=xl(Al(),new(U(DF).j)(["The two types "," and "," are not compatible"]));dj(n,Ji(new AS(s),kl(Al(),new j([t,i]))))}if(s=_S(e,o),e=t=>{if(null!==t)return cv(n,t.H(),t.G(),new HO(r));throw new pq(t)},s===h1())e=h1();else{for(o=s.b(),i=o=new a1(e(o),h1()),s=s.c();s!==h1();){var a=s.b();a=new a1(e(a),h1()),i=i.h=a,s=s.c()}e=o}return new uV(t,e)}throw new pq(i)}(n,t,e,r):(Wi(),void dj(n,Ji(new AS(r=xl(Al(),new(U(DF).j)(["The two types "," and "," are not compatible"]))),kl(Al(),new j([t,e])))))}function hv(n,t,e,r){for(;!t.f();){var i=t.b(),o=_h().r;if(null===o?null!==i:!o.d(i)){if(null!==i&&(_h(),0===i.Ma(1)&&null!==(o=Wq(i,0))))return e=o.Dc,t=o.ge,ZI(r,o.Hd),we(r,n,e),t;if(o=(n=>t=>{var e=Sv(t=t.Dc,n).H();return bq(new gq,t,e)})(r),i===h1())o=h1();else{var s=i.b(),a=s=new a1(o(s),h1());for(i=i.c();i!==h1();){var u=i.b();u=new a1(o(u),h1()),a=a.h=u,i=i.c()}o=s}Gs(o=new iF(o,i=qc(r.Og,n)))}t=t.c()}if((null===(n=_h().r)?null===e:n.d(e))&&Js(r,"Cannot typecheck call."),null!==e&&(_h(),0===e.Ma(1)&&(null!==(n=Wq(e,0))&&function(n,t){var e=t.b();t=t.Yh(),(n=GQ(n)).xe=YX(n.xe,t),Gs(e)}(r,n.G()))),n=n=>{if(null!==n){var t=n.H();return n=n.G(),new Iq(t,Sv(t,r).H(),n)}throw new pq(n)},e===h1())e=h1();else{for(o=t=new a1(n(t=e.b()),h1()),e=e.c();e!==h1();)i=new a1(n(i=e.b()),h1()),o=o.h=i,e=e.c();e=t}Gs(e=new sF(e,n=qc(r.Og,r.w)))}function lv(n,t,e,r,i){if(r!==i){var o=xl(Al(),new(U(DF).j)(["Number of "," (",") does not match declaration of '","', which expects ","."]));Ws(n,new Cj(o=new AS(o),t=kl(Al(),new j([e,r,t.Yd,i]))))}}function pv(n,t){return!t.f()||!n.fd.f()}function wv(n,t,e){if(null===e)throw GT();return e.ob?e.wb:Dg(e,ij(n.sa,new xN(t)))}var dv,vv,yv,bv,gv;function mv(){this.c2="typer"}function $v(n,t,e,r,i){var o,s=r.w;r.w=t;n:if(t instanceof _K)var u=new qI(t.rp,Do().ri);else if(t instanceof YK){var c=t.dm,f=t.bm;t:{var h=kv(n,t.cm,r,i);if(null!==h){var l=h.Za;if(void 0===h.zb){var p=l;break t}}throw new pq(h)}var w=Av(n,c,e,r,i);if(null===w)throw new pq(w);var d=w.Za,v=w.zb,y=d,b=Av(n,f,e,r,i);if(null===b)throw new pq(b);var g=b.Za,m=b.zb,$=g,k=xl(Al(),new(U(qO).j)([v,m]));u=new qI(fj(r.sa,k),po(po(p,y),$))}else if(t instanceof eV){var x=t.gm,E=t.hm,D=kv(n,t.im,r,i);if(null===D||void 0!==D.zb)throw new pq(D);if(E.f())A=new LF(Xi().Kk);else var A=e;var I=Av(n,x,A,r,i);if(null===I)throw new pq(I);var S=I.Za,C=I.zb,z=S;if(E.f())var N=qF();else{var T=E.v();N=new LF(Av(n,T,A,r,i))}if(N.f())var q=new qI(Xi().Kk,new lo(OS(_h().r)));else q=N.v();var L=q;if(null===L)throw new pq(L);var R=L.Za,M=L.zb,B=R,O=xl(Al(),new(U(qO).j)([C,M]));u=new qI(fj(r.sa,O),po(B,z))}else{if(t instanceof YJ){var F=de(r,t.Gk);if(ZA(F)){var P=HI(r,F);if(null!==P){var K=P.H(),V=P.G(),H=to(eo(),K,r);cj(r.sa,V,i),u=new qI(H,Do().ri);break n}throw new pq(P)}if(Q$(F)&&Js(r,"Expected an expression, but got a block."),rk(F)){u=new qI(function(n,t){return function(n,t,e,r){return Jt(n,t).sb(Zt(ne(),t,e),r)}(n.Fa,ne().Uj,t,new qE(()=>le(n,t)))}(r,F),Do().ri);break n}throw new pq(F)}if(t instanceof HJ){var G=t.am,J=ve(r,t);if(null!==J){var W=HI(r,J);if(null===W)throw new pq(W);var Q=W.H();cj(r.sa,W.G(),i);var Y=to(eo(),Q,r),_=$v(n,G,new LF(Y),r,i);if(null===_)throw new pq(_);var X=_.Za;u=new qI(Xi().Kk,X);break n}throw new pq(J)}if(t instanceof JK){var Z=t.Jn,nn=t.ij,tn=new hT;if(e.f())on=qF();else var en=new DS(tn),rn=e.v(),on=en.Yx(rn);if(Z.f())var sn=qF();else{var an=Z.v(),un=ne().pG;sn=new LF(oe(r,un,an))}var cn=sn.f()?ij(r.sa,new AN(t)):sn.v(),fn=Ev(n,nn,on,r,cn);if(null===fn)throw new pq(fn);var hn=fn.Za,ln=new kV(fn.zb,cn),pn=MI(Mo(r.sa.$a),ln),wn=r.sa;if(e.f())var dn=qF();else{var vn=e.v();dn=new LF(MI(Mo(wn.$a),vn))}if(!dn.f())Lv(pn,dn.v(),r);u=new qI(pn,hn)}else if(t instanceof tV&&Js(r,"Expected an expression, but got an 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t=ne().Si;return oe(r,t,n)};if(Kn===h1())var Wn=h1();else{for(var Qn=new a1(Jn(Kn.b()),h1()),Yn=Qn,_n=Kn.c();_n!==h1();){var Xn=new a1(Jn(_n.b()),h1());Yn=Yn.h=Xn,_n=_n.c()}Wn=Qn}u=Cv(n,t,Gn,Wn,Vn,Hn,e,r,i);break n}if(Un instanceof SK){t:{var Zn=Ev(n,Un.Sl,qF(),r,i);if(null!==Zn){var nt=Zn.zb,tt=Zn.Za;if(nt instanceof aV){var et=new qI(nt,tt);break t}}Js(r,"Cannot infer function type for callee.")}var rt=et.zb,it=et.Za,ot=n=>{var t=ne().Si;return oe(r,t,n)};if(Kn===h1())var st=h1();else{for(var at=new a1(ot(Kn.b()),h1()),ut=at,ct=Kn.c();ct!==h1();){var ft=new a1(ot(ct.b()),h1());ut=ut.h=ft,ct=ct.c()}st=at}var ht=zv(n,t,"function",rt,st,Vn,Hn,e,r,i);if(null===ht)throw new pq(ht);var lt=ht.Za;u=new qI(ht.zb,po(lt,it));break n}}if(t instanceof JJ){var pt=t.kj,wt=t.em,dt=t.sp,vt=t.lj,yt=t.jj,bt=n=>{var t=ne().Si;return oe(r,t,n)};if(dt===h1())var gt=h1();else{for(var mt=new a1(bt(dt.b()),h1()),$t=mt,kt=dt.c();kt!==h1();){var xt=new a1(bt(kt.b()),h1());$t=$t.h=xt,kt=kt.c()}gt=mt}u=function(n,t,e,r,i,o,s,u,c,f){var h=de(c,r);if(h instanceof dV){var l=h.Uw;h=Cb().zj,l=bZ(YS(l,h),new lT)}else h instanceof JH?(_h(),l=xl(Al(),new(U(QH).j)([h])),l=dZ(h1(),l)):(h="Not a valid method: "+h+" : "+Ak(a(h)),Ps(c,h));if(null===(e=Ev(n,e,qF(),c,f)))throw new pq(e);e=e.zb;var p=Te(qe(),e,c);e=n=>{n=n.Bp;var t=p.Lc;return null===n?null===t:zi(n,t)},h=l;t:for(;;){if(h.f()){e=h1();break}var w=h.b();if(l=h.c(),!1==!!e(w))h=l;else for(;;){if(l.f())e=h;else{if(w=l.b(),!1!=!!e(w)){l=l.c();continue}w=l,l=new a1(h.b(),h1());var d=h.c();for(h=l;d!==w;){var v=new a1(d.b(),h1());h=h.h=v,d=d.c()}for(d=w=w.c();!w.f();){if(v=w.b(),!1==!!e(v)){for(;d!==w;)v=new a1(d.b(),h1()),h=h.h=v,d=d.c();d=w.c()}w=w.c()}d.f()||(h.h=d),e=l}break t}}if(null===(l=Nv(e,new RE(e=>{var r=Sv(e,c);if(null===r)throw new pq(r);if(r=r.H(),!i.f()&&i.s()!==r.gd.s()){var a="Wrong number of type arguments, given "+i.s()+" but expected "+r.gd.s();Js(c,a)}for(a=_S(i,p.tf);!a.f();){var h=a.b();if(null===h)throw new pq(h);Lv(h.G(),h.H(),c),a=a.c()}return a=i.f()?function n(t,e,r,i,o){var s=(o=bq(new gq,i,o)).dg,a=o.vg;if(s instanceof a1){var u=s.Ec;if(i=s.h,a instanceof a1)return new a1(o=a.Ec,t=n(t,e,r,i,a.h));var c=_h().r;if(null===c?null===a:c.d(a))return new a1(o=new EV(o=rj(r.sa,u,e)),t=n(t,e,r,i,_h().r))}if(null===(t=_h().r)?null===s:t.d(s))return _h().r;throw new pq(o)}(n,t,c,r.gd,p.tf):i,zv(n,t,e.Yg.Z(),r,a,o,s,u,c,f)}),c)))throw new pq(l);e=l.G(),l=l.H();return _h(),l=xl(Al(),new(U(mZ).j)([l])),hv(r,dZ(h1(),l),e,c)}(n,t,pt,wt,gt,vt,yt,e,r,i)}else if(t instanceof WJ){var Et=t.Dk,Dt=de(r,t.Ek);_I(r,Dt);var At=ij(r.sa,new jN(t));cj(r.sa,At,i),_h();var It=xl(Al(),new(U(OH).j)([Dt.na()])),jt=dZ(h1(),It),St=pj(r.sa,At,jt);u=Av(n,Et,e,r,St)}else if(t instanceof nV){var Ct=t.nj,zt=t.mj,Nt=yZ(zt,function(n,t){return new RE(e=>{var r=n.w;return n.w=e,e=t.q(e),n.w=r,e})}(r,new RE(n=>{var t=n.qk.yh,e=ne().Si;return t=oe(r,e,t),(n=n.Cn).f()?n=qF():(n=n.v().Xb,n=new LF(de(r,n))),t=n.f()?VI(r,t):n.v(),(n=t.Mf).f()&&Rs("Block type annotation required"),n=n.v(),e=xl(Al(),new(U(OH).j)([t.na()])),e=bE(gE(),e),WI(r,t,n,new TN(e)),t}))),Tt=ij(r.sa,new DN(t));if(Nt===h1())var qt=h1();else{for(var Lt=new a1(Nt.b().na(),h1()),Rt=Lt,Mt=Nt.c();Mt!==h1();){var Bt=new a1(Mt.b().na(),h1());Rt=Rt.h=Bt,Mt=Mt.c()}qt=Lt}var Ot=pj(r.sa,Tt,qt);UI(r,t,Nt);var Ft=(o=r,n=>{qe();var t=n.Mf;return t.f()&&Rs("Capability type needs to be know."),t=Te(0,t.v(),o.Xc),bq(new gq,t,n)});if(Nt===h1())var Pt=h1();else{for(var Ut=new a1(Ft(Nt.b()),h1()),Kt=Ut,Vt=Nt.c();Vt!==h1();){var Ht=new a1(Ft(Vt.b()),h1());Kt=Kt.h=Ht,Vt=Vt.c()}Pt=Ut}Cb(),r.sc=new _d(t,dE(vE(),Pt),r.sc);var Gt=Av(n,Ct,e,r,Ot);if(r.sc=r.sc.Vp(),null===Gt)throw new pq(Gt);var Yt=Gt.Za,_t=Gt.zb,Xt=Yt,te=null;te=Do().ri;for(var ee=zt;!ee.f();){var re=ee.b(),ie=r.w;r.w=re;var se=re.qk,ae=bq(new gq,_t,Tt),ue=xv(n,se,new LF(ae),r,Ot);if(null===ue)throw new pq(ue);var ce=po(te,ue.Za);te=ce,ce=null,r.w=ie,ee=ee.c()}var fe=n=>{var t=r.sa;qe();var e=n.Mf;return e.f()&&Rs("Block type annotation required"),e=Te(0,e.v(),r),t=OI(Mo(t.$a),e),bq(new gq,t,n)};if(Nt===h1())var he=h1();else{for(var pe=new a1(fe(Nt.b()),h1()),we=pe,ye=Nt.c();ye!==h1();){var be=new a1(fe(ye.b()),h1());we=we.h=be,ye=ye.c()}he=pe}for(var ge=zt,me=null,$e=null;ge!==h1();){var ke=ge.b().Cn;if(ke.f())var xe=qF();else{var Ee=ke.v().Xb;xe=new LF(de(r,Ee))}for(var De=xe.x();De.y();){var Ae=new a1(De.t(),h1());null===$e?me=Ae:$e.h=Ae,$e=Ae}ge=ge.c()}var Ie=null===me?h1():me,je=bE(gE(),Ie);if(bo(),he===h1())var Se=h1();else{for(var Ce=new a1(he.b().H(),h1()),ze=Ce,Ne=he.c();Ne!==h1();){var Le=new a1(Ne.b().H(),h1());ze=ze.h=Le,Ne=Ne.c()}Se=Ce}for(var Re=yo(Se,r),Me=bC().u(),Be=he.x();Be.y();){var Oe=Be.t();Me.gy(Oe.H(),new qE(()=>(qL(),new T1))).jb(Oe)}for(var Fe=uE().Dm,Pe=Me.x();Pe.y();){var Ue=Pe.t();if(null===Ue)throw new pq(Ue);Fe=oX(Fe,Ue.H(),Ue.G().mb())}var Ke=new UY(new PY(Fe),new RE(n=>{if(n===h1())return h1();var t=n.b(),e=t=new a1(t.G(),h1());for(n=n.c();n!==h1();){var r=n.b();r=new a1(r.G(),h1()),e=e.h=r,n=n.c()}return t}));qL();for(var Ve=dZ(h1(),Ke),He=Ve;!He.f();){var Ge=He.b();if(null!==Ge){var Je=Ge.H(),We=Ge.G();if(1{if(null!==t){var o=t.sk,s=t.Xl;if(t=Dv(n,pr,t.Yl,r,i),QI(r,t),null===(o=kv(n,o,r,i))||(t=o.Za,void 0!==o.zb))throw new pq(o);o=t,t=r.w;var a=r.S,u=r.K;if(s=Av(n,s,e,r,i),r.K=u,r.w=t,r.S=a,null===s)throw new pq(s);return t=s.Za,s=s.zb,o=po(po(wr.Ba,t),o),wr.Ba=o,s}throw new pq(t)};if(cr===h1())var vr=h1();else{for(var yr=new a1(dr(cr.b()),h1()),br=yr,gr=cr.c();gr!==h1();){var mr=new a1(dr(gr.b()),h1());br=br.h=mr,gr=gr.c()}vr=yr}if(fr.f())var $r=qF();else{var kr=fr.v(),xr=r.w,Er=r.S,Dr=r.K,Ar=Av(n,kr,e,r,i);if(r.K=Dr,r.w=xr,r.S=Er,null===Ar)throw new pq(Ar);var Ir=Ar.Za,jr=Ar.zb,Sr=po(wr.Ba,Ir);wr.Ba=Sr,Sr=null,$r=new LF(jr)}var Cr=vZ(vr,$r);u=new qI(fj(r.sa,Cr),wr.Ba)}else{if(!(t instanceof QK))throw t instanceof ZK&&Js(r,"Expected an expression, but got an object implementation (which is a block)."),t instanceof GK&&Js(r,"Expected an expression, but got a block literal."),new pq(t);var zr=Av(n,t.Yq,qF(),r,i);if(null===zr)throw new pq(zr);u=new qI(e.f()?Xi().Rn:e.v(),Do().ri)}}}if(null===u)throw new pq(u);var Nr=u.Za,Tr=u.zb,qr=Nr;(so(fo(),Tr,r),fo(),ek(),oo(0,new YA(qr.we),r),e.f())||Lv(Tr,e.v(),r);Wt(r.Fa,ne().Tm,t,Tr),ek();var Lr=new YA(qr.we);Wt(r.Fa,ne().No,t,Lr);var Rr=new qI(Tr,qr);return r.w=s,Rr}function kv(n,t,e,r){var i=_h().r;for(i=new lo(OS(i));!t.f();){var o=t.b(),s=n,a=o;o=e;var u=r;if(a instanceof qK){var c=a.ki;if(null===(s=$v(s,c,new LF(a=Xi().mm),o,u)))throw new pq(s);s=s.Za,s=new qI(o=S_(),s)}else{if(!(a instanceof LK))throw new pq(a);if(c=a.tk,null===(a=$v(s,a.uk,qF(),o,u)))throw new pq(a);var f=a.Za;s=new qI(s=Dv(s,a=a.zb,c,o,u),f)}if(null===s)throw new pq(s);o=s.Za,QI(e,s=s.zb),i=po(i,o),t=t.c()}return new qI(void 0,i)}function xv(n,t,e,r,i){var o=r.w;if(r.w=t,null===t)throw new pq(t);var s=t.yh,a=t.Wl,u=null;u=Do().ri;var c=oe(r,ne().Si,s);if(null===c)throw new pq(c);var f=c,h=c.Lc,l=c.tf,p=ze(qe(),h,r);if(a===h1())var w=h1();else{for(var d=new a1(ve(r,a.b()),h1()),v=d,y=a.c();y!==h1();){var b=new a1(ve(r,y.b()),h1());v=v.h=b,y=y.c()}w=d}var g=p.oj,m=bE(gE(),g),$=bE(gE(),w),k=m.Ye($);if(!k.f()){var x=Ef(k.ya(new RE(n=>(Wi(),Ji(new AS(xl(Al(),new(U(DF).j)([""," of interface ",""]))),kl(Al(),new j([n.Yg,n.Bp.vp])))))),"",", ","");Fs(r,new Cj(new AS(xl(Al(),new(U(DF).j)(["Missing definitions for operations: ",""]))),kl(Al(),new j([x]))))}w.s()>OS(w).s()&&Os(r,"Duplicate definitions of operations");for(var E=a;!E.f();){var D=E.b(),A=r.w,I=r.w=D;if(null===I)throw new pq(I);var S=I.$l,C=I.Gn,z=I.Hn,N=I.Zl,T=I.Wq,q=I.wk,L=I.Fn;if(!T.f()){var R=T.v();if(null!==R)Ws(r,new Cj(new AS(xl(Al(),new(U(DF).j)(["Unexpected type annotation on operation ","."]))),kl(Al(),new j([S]))));throw new pq(R)}n:{for(var M=p.oj;!M.f();){if(M.b().Yg.Z()===S.Yd){var B=new LF(M.b());break n}M=M.c()}B=qF()}B.f()&&Ws(r,new Cj(new AS(xl(Al(),new(U(DF).j)(["Operation "," not defined in ","."]))),kl(Al(),new j([S.Yd,p.vp]))));var O=B.v(),F=GI(r,ve(r,I));if(0!==C.s()&&lv(r,S,"type parameters",C.s(),F.gd.s()-l.s()|0),lv(r,S,"value parameters",z.s(),F.hd.s()),C.s()===(F.gd.s()-l.s()|0)){var P=(n=>t=>Se(qe(),de(n,t),n))(r);if(C===h1())var K=h1();else{for(var V=new a1(P(C.b()),h1()),H=V,G=C.c();G!==h1();){var J=new a1(P(G.b()),h1());H=H.h=J,G=G.c()}K=V}}else{var W=F.gd,Q=KG(l.s(),W);if(Q===h1())K=h1();else{for(var Y=new a1(new aW(Q.b().Jk),h1()),_=Y,X=Q.c();X!==h1();){var Z=new a1(new aW(X.b().Jk),h1());_=_.h=Z,X=X.c()}K=Y}}if(K===h1())var nn=h1();else{for(var tn=new a1(new EV(K.b()),h1()),en=tn,rn=K.c();rn!==h1();){var on=new a1(new EV(rn.b()),h1());en=en.h=on,rn=rn.c()}nn=tn}re(r,ne().nv,I,K);var sn=_A(F.Gd);n:{if(qF()!==e){if(e instanceof LF){Gy||(Gy=new Hb);var an=Gb(e);if(!an.f()){var un=an.v(),cn=un.H(),fn=un.G();N.f()||Os(r,"Block parameters are bound by resume and not the effect operation itself");var hn=O.bx;if(hn===h1())var ln=h1();else{for(var pn=new a1(new tW(hn.b().Ik),h1()),wn=pn,dn=hn.c();dn!==h1();){var vn=new a1(new tW(dn.b().Ik),h1());wn=wn.h=vn,dn=dn.c()}ln=pn}if(sn===h1())var yn=h1();else{for(var bn=new a1(new tW(sn.b().Lc.Y()),h1()),gn=bn,mn=sn.c();mn!==h1();){var $n=new a1(new tW(mn.b().Lc.Y()),h1());gn=gn.h=$n,mn=mn.c()}yn=bn}var kn=vZ(ln,yn);t:{var xn=vZ(l,nn),En=n=>(n=xl(Al(),new(U(OH).j)([n])),new TN(n=bE(gE(),n)));if(kn===h1())var Dn=h1();else{for(var An=new a1(En(kn.b()),h1()),In=An,jn=kn.c();jn!==h1();){var Sn=new a1(En(jn.b()),h1());In=In.h=Sn,jn=jn.c()}Dn=An}var Cn=wj(r.sa,F,xn,Dn);if(null!==Cn){var zn=Cn.gd,Nn=Cn.Ke,Tn=Cn.hd,qn=Cn.fd,Ln=Cn.$c,Rn=Cn.Gd,Mn=_h().r;if(null===Mn?null===zn:Mn.d(zn))var Bn=_h().r,On=null===Bn?null===Nn:Bn.d(Nn);else On=!1;if(On){var Fn=Tn,Pn=qn,Un=Ln,Kn=Rn;break t}}throw new pq(Cn)}for(var Vn=Pn,Hn=Un,Gn=Kn,Jn=_S(z,Fn);!Jn.f();){var Wn=Jn.b();if(null===Wn)throw new pq(Wn);var Qn=Wn.H(),Yn=Wn.G(),_n=de(r,Qn.Ug),Xn=_n.Ch;Xn.f()||qv(Xn.v(),Yn,Qn,r);var Zn=Xn.f()?Yn:Xn.v();Wt(r.Fa,ne().Uj,_n,Zn),Jn=Jn.c()}if(pv(F,sn)){var nt=new aV(_h().r,kn,_h().r,Vn,Hn,Gn),tt=new tW(new MN("resumeBlock")),et=_h().r;_h();var rt=xl(Al(),new(U(OH).j)([tt])),it=dZ(h1(),rt),ot=_h().r;_h();var st=xl(Al(),new(U(jO).j)([nt])),at=new aV(et,it,ot,dZ(h1(),st),cn,ek().Pn)}else{var ut=_h().r,ct=_h().r;_h();var ft=xl(Al(),new(U(qO).j)([Hn]));at=new aV(ut,ct,dZ(h1(),ft),_h().r,cn,ek().Pn)}WI(r,Ne(qe(),de(r,L),r),at,fn),Re=Av(n,q,new LF(cn),r,i);break n}}throw new pq(e)}lv(r,S,"block parameters",N.s(),F.fd.s());var ht=(n=>t=>de(n,t.Xb).na())(r);if(N===h1())var lt=h1();else{for(var pt=new a1(ht(N.b()),h1()),wt=pt,dt=N.c();dt!==h1();){var vt=new a1(ht(dt.b()),h1());wt=wt.h=vt,dt=dt.c()}lt=pt}if(sn===h1())var yt=h1();else{for(var bt=new a1(new tW(sn.b().Lc.Y()),h1()),gt=bt,mt=sn.c();mt!==h1();){var $t=new a1(new tW(mt.b().Lc.Y()),h1());gt=gt.h=$t,mt=mt.c()}yt=bt}var kt=vZ(lt,yt);t:{var xt=vZ(l,nn),Et=n=>(n=xl(Al(),new(U(OH).j)([n])),new TN(n=bE(gE(),n)));if(kt===h1())var Dt=h1();else{for(var At=new a1(Et(kt.b()),h1()),It=At,jt=kt.c();jt!==h1();){var St=new a1(Et(jt.b()),h1());It=It.h=St,jt=jt.c()}Dt=At}var Ct=wj(r.sa,F,xt,Dt);if(null!==Ct){var zt=Ct.gd,Nt=Ct.Ke,Tt=Ct.hd,qt=Ct.fd,Lt=Ct.$c,Rt=Ct.Gd,Mt=_h().r;if(null===Mt?null===zt:Mt.d(zt))var Bt=_h().r,Ot=null===Bt?null===Nt:Bt.d(Nt);else Ot=!1;if(Ot){var Ft=Tt,Pt=qt,Ut=Lt,Kt=Rt;break t}}throw new pq(Ct)}for(var Vt=Pt,Ht=Ut,Gt=Kt,Jt=_S(z,Ft);!Jt.f();){var Qt=Jt.b();if(null===Qt)throw new pq(Qt);var Yt=Qt.H(),_t=Qt.G(),Xt=de(r,Yt.Ug),Zt=Xt.Ch;Zt.f()||qv(Zt.v(),_t,Yt,r);var te=Zt.f()?_t:Zt.v();Wt(r.Fa,ne().Uj,Xt,te),Jt=Jt.c()}for(var ee=_S(N,Vt).qd(lt);!ee.f();){var ie=ee.b();t:{if(null!==ie){var se=ie.H();if(null!==se){var ae=se.H(),ue=se.G(),ce=ie.G(),fe=de(r,ae.Xb),he=fe.Mf;if(!he.f())Tv(he.v(),ue,ae,r);var le=he.f()?ue:he.v(),pe=xl(Al(),new(U(OH).j)([ce]));WI(r,fe,le,new TN(bE(gE(),pe)));break t}}throw new pq(ie)}ee=ee.c()}var we=_S(_A(Gt),yt),ye=(n=>t=>{if(null!==t){var e=t.H();return t=t.G(),t=xl(Al(),new(U(OH).j)([t])),t=new TN(t=bE(gE(),t)),e=VI(n,e),Wt(n.Fa,ne().Vf,e,t),e}throw new pq(t)})(r);if(we===h1())var be=h1();else{for(var ge=new a1(ye(we.b()),h1()),me=ge,$e=we.c();$e!==h1();){var ke=new a1(ye($e.b()),h1());me=me.h=ke,$e=$e.c()}be=ge}UI(r,I,be);var xe=(n=>t=>{qe();var e=t.Mf;return e.f()&&Rs("Capability type needs to be know."),e=Te(0,e.v(),n.Xc),bq(new gq,e,t)})(r);if(be===h1())var Ee=h1();else{for(var De=new a1(xe(be.b()),h1()),Ae=De,Ie=be.c();Ie!==h1();){var je=new a1(xe(Ie.b()),h1());Ae=Ae.h=je,Ie=Ie.c()}Ee=De}Cb(),r.sc=new _d(I,dE(vE(),Ee),r.sc);var Ce=Av(n,q,new LF(Ht),r,i);if(r.sc=r.sc.Vp(),null===Ce)throw new pq(Ce);var Le=Ce.Za,Re=new qI(Ce.zb,wo(Le,mo(Do(),Gt,r)))}if(null===Re)throw new pq(Re);var Me=po(u,Re.Za);u=Me,Me=null,r.w=A,E=E.c()}Wt(r.Fa,ne().Gs,t,f);var Be=new qI(f,u);return r.w=o,Be}function Ev(n,t,e,r,i){var o=r.w;if(r.w=t,t instanceof tV){var s=t.Fk;if(e.f())var a=qF();else a=new LF(new kV(a=e.v(),ij(r.sa,new IN(t))));if(null===(n=$v(n,s,a,r,i)))throw new pq(n);if(s=n.Za,n=n.zb,(a=MI(Mo(r.sa.$a),n))instanceof kV){var u=a.tg;cj(r.sa,a.Zg,i),u=new qI(u,s)}else(i=ie(r,i=ne().uG,t))instanceof LF&&i.oa instanceof EJ&&Ws(r,new Cj(i=new AS(i=xl(Al(),new(U(DF).j)(["Expected the right-hand side of a `def` binding to be a block, but got a value of type ",".\\nMaybe try `val` if you're defining a value."]))),s=kl(Al(),new j([n])))),Ws(r,new Cj(i=new AS(i=xl(Al(),new(U(DF).j)(["Unbox requires a boxed type, but got ","."]))),n=kl(Al(),new j([n]))))}else if(t instanceof YJ){if(!Q$(u=de(r,n=t.Gk)))throw rk(u)&&Ws(r,new Cj(o=new AS(o=xl(Al(),new(U(DF).j)(["Expected a block variable, but "," is a value. Maybe use explicit syntax: { () => "," }"]))),t=kl(Al(),new j([n,n])))),new pq(u);if(null===(u=HI(r,u)))throw new pq(u);n=u.G(),u=u.H(),e.f()||Rv(u,s=e.v(),r),cj(r.sa,n,i),u=new qI(u,i=Do().ri)}else if(t instanceof ZK)u=xv(n,t.ni,qF(),r,i);else if(t instanceof JJ)Ol(Fl(),"Nested capability selection not yet supported");else if(t instanceof GK)n:{if(e instanceof LF){if((u=e.oa)instanceof aV){u=function(n,t,e,r,i){var o=r.w;if(r.w=t,null===t)throw new pq(t);var s=t.zk,a=t.Ak,u=t.mi,c=t.zh;if(null===e)throw new pq(e);var f=e.Ke,h=e.hd,l=e.fd,p=e.$c,w=e.Gd,d=e.gd,v=f,y=h,b=l,g=p,m=w;if(d.s()!==s.s()){var $="Wrong number of type arguments, given "+s.s()+", but function expects "+d.s()+".";Js(r,$)}if(y.s()!==a.s()){var k="Wrong number of value arguments, given "+a.s()+", but function expects "+y.s()+".";Js(r,k)}if(b.s()!==u.s()){var x="Wrong number of block arguments, given "+u.s()+", but function expects "+b.s()+".";Js(r,x)}var E=n=>Se(qe(),de(r,n),r);if(s===h1())var D=h1();else{for(var A=s.b(),I=new a1(E(A),h1()),j=I,S=s.c();S!==h1();){var C=S.b(),z=new a1(E(C),h1());j=j.h=z,S=S.c()}D=I}if(mk(),D===h1())var N=h1();else{for(var T=new a1(new EV(D.b()),h1()),q=T,L=D.c();L!==h1();){var R=new a1(new EV(L.b()),h1());q=q.h=R,L=L.c()}N=T}var M=gk(0,d,N),B=_S(a,y),O=n=>{if(null!==n){var t=n.H();n=MI(M,n.G());var e=de(r,t.Ug).Ch;return e.f()?e=qF():(qv(e=e.v(),n,t,r),e=new LF(e)),n=e.f()?n:e.v(),t=de(r,t.Ug),Wt(r.Fa,ne().Uj,t,n),n}throw new pq(n)};if(B===h1())var F=h1();else{for(var P=B.b(),K=new a1(O(P),h1()),V=K,H=B.c();H!==h1();){var G=H.b(),J=new a1(O(G),h1());V=V.h=J,H=H.c()}F=K}var W=_S(u,b),Q=n=>{if(null!==n){var t=n.H(),e=FI(M,n.G()),i=(n=de(r,t.Xb)).Mf;return i.f()?i=qF():(Tv(i=i.v(),e,t,r),i=new LF(i)),e=i.f()?e:i.v(),t=de(r,t.Xb),n=xl(Al(),new(U(OH).j)([n.na()])),n=bE(gE(),n),WI(r,t,e,new TN(n)),e}throw new pq(n)};if(W===h1())var Y=h1();else{for(var _=W.b(),X=new a1(Q(_),h1()),Z=X,nn=W.c();nn!==h1();){var tn=nn.b(),en=new a1(Q(tn),h1());Z=Z.h=en,nn=nn.c()}Y=X}var 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I,XL.prototype.constructor=XL,(r=XL.prototype).vi=function(n){return ZL(0,n)},r.Na=function(){return new pR},r.gb=function(n){return ZL(0,n)},r.u=function(){return p1()},r.$classData=F({$9:0},!1,"scala.collection.immutable.Vector$",{$9:1,e:1,qo:1,gh:1,Nd:1,g:1});var eR,rR,iR,oR,sR,aR,uR,cR=function n(t,e,r){if(lf(),0!==e.a.length){32===t.ub&&fR(t);var i=e.a.length;switch(r){case 2:i=i-(r=(r=31&((1024-t.Va|0)>>>5|0))>>5|0),r),hR(t,r<<5),0>>10|0))>>10|0),r),hR(t,r<<10),0>>15|0))>>15|0),r),hR(t,r<<15),0>>20|0))>>20|0),r),hR(t,r<<20),0>>25|0)+i|0))throw OT("exceeding 2^31 elements");e.X(0,t.cf,r,i),hR(t,i<<25);break;default:throw new pq(r)}}};function fR(n){var t=32+n.Va|0,e=t^n.Va;n.Va=t,n.ub=0,lR(n,t,e)}function hR(n,t){if(0=e)throw OT("advance1("+t+", "+e+"): a1="+n.Ic+", a2="+n.Eb+", a3="+n.cc+", a4="+n.Cc+", a5="+n.pd+", a6="+n.cf+", depth="+n.dc);1024>e?(1>=n.dc&&(n.Eb=new(U(U(V)).j)(32),n.Eb.a[0]=n.Ic,n.dc=2),n.Ic=new 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i=t.L;n.Ic=32===i.a.length?i:Xa(Za(),i,0,32),n.dc=3,n.Fb=1024-t.ce|0,i=t.N+n.Fb|0,n.ub=31&i,n.Va=i-n.ub|0,n.cc=new(U(U(U(V))).j)(32),n.cc.a[0]=gh(Eh(),t.I,t.He),e.X(0,n.cc,1,e.a.length),n.Eb=Va(Za(),r,32),n.cc.a[1+e.a.length|0]=n.Eb,n.Eb.a[r.a.length]=n.Ic;break;case 7:e=t.Gc,r=t.Pc,i=t.Oc;var o=t.L;n.Ic=32===o.a.length?o:Xa(Za(),o,0,32),n.dc=4,n.Fb=32768-t.md|0,o=t.N+n.Fb|0,n.ub=31&o,n.Va=o-n.ub|0,n.Cc=new(U(U(U(U(V)))).j)(32),n.Cc.a[0]=gh(Eh(),gh(Eh(),t.I,t.Bd),t.Cd),e.X(0,n.Cc,1,e.a.length),n.cc=Va(Za(),r,32),n.Eb=Va(Za(),i,32),n.Cc.a[1+e.a.length|0]=n.cc,n.cc.a[r.a.length]=n.Eb,n.Eb.a[i.a.length]=n.Ic;break;case 9:e=t.fc,r=t.pc,i=t.oc,o=t.nc;var 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VT,""+n)},r.$classData=F({u3:0},!1,"kiama.util.Severities$Error$",{u3:1,CI:1,e:1,i:1,m:1,g:1,bb:1,Hb:1,$e:1}),MG.prototype=new Rc,MG.prototype.constructor=MG,(r=MG.prototype).B=function(){return new yq(this)},r.l=function(){return 2249383},r.k=function(){return"Hint"},r.n=function(){return 0},r.p=function(){return"Hint"},r.o=function(n){throw KT(new VT,""+n)},r.$classData=F({v3:0},!1,"kiama.util.Severities$Hint$",{v3:1,CI:1,e:1,i:1,m:1,g:1,bb:1,Hb:1,$e:1}),OG.prototype=new Rc,OG.prototype.constructor=OG,(r=OG.prototype).B=function(){return new yq(this)},r.l=function(){return-658498292},r.k=function(){return"Information"},r.n=function(){return 0},r.p=function(){return"Information"},r.o=function(n){throw KT(new VT,""+n)},r.$classData=F({w3:0},!1,"kiama.util.Severities$Information$",{w3:1,CI:1,e:1,i:1,m:1,g:1,bb:1,Hb:1,$e:1}),PG.prototype=new Rc,PG.prototype.constructor=PG,(r=PG.prototype).B=function(){return new yq(this)},r.l=function(){return-1505867908},r.k=function(){return"Warning"},r.n=function(){return 0},r.p=function(){return"Warning"},r.o=function(n){throw KT(new VT,""+n)},r.$classData=F({x3:0},!1,"kiama.util.Severities$Warning$",{x3:1,CI:1,e:1,i:1,m:1,g:1,bb:1,Hb:1,$e:1}),JG.prototype=new I,JG.prototype.constructor=JG,(r=JG.prototype).ch=function(n){return n===this.$Q},r.Cg=function(n,t){return 0>=this.ha(n,t)},r.bh=function(n,t){return 0<=this.ha(n,t)},r.Bg=function(n,t){return 0>this.ha(n,t)},r.yg=function(n,t){return 0 n2) { return 1; }\n else { return -1; }\n}\n\n$effekt.compare = function(obj1, obj2) {\n if ($effekt.equals(obj1, obj2)) { return 0; }\n\n if (!!obj1 && !!obj2) {\n if (!!obj1.__reflect && !!obj2.__reflect) {\n const tagOrdering = compare$prim(obj1.__tag, obj2.__tag)\n if (tagOrdering != 0) { return tagOrdering; }\n\n const meta1 = obj1.__reflect().__data\n const meta2 = obj2.__reflect().__data\n\n const lengthOrdering = compare$prim(meta1.length, meta2.length)\n if (lengthOrdering != 0) { return lengthOrdering; }\n\n for (let i = 0; i < meta1.length; i++) {\n const contentOrdering = $effekt.compare(meta1[i], meta2[i])\n if (contentOrdering != 0) { return contentOrdering; }\n }\n\n return 0;\n }\n }\n\n return compare$prim(obj1, obj2);\n}\n\n$effekt.println = function println$impl(str) {\n console.log(str); return $effekt.unit;\n}\n\n$effekt.unit = { __unit: true }'),zs("js/effekt_runtime.js",'const $runtime = (function() {\n\n // Common Runtime\n // --------------\n\n // Regions\n // TODO maybe use weak refs (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakRef)\n function Cell(init) {\n var _value = init;\n const cell = ({\n backup: function() {\n var _backup = _value\n var cell = this;\n return () => { _value = _backup; return cell }\n }\n });\n // $getOp and $putOp are auto generated from the compiler\n cell[$getOp] = function() {\n return _value\n };\n cell[$putOp] = function(v) {\n _value = v;\n return $effekt.unit;\n };\n return cell\n }\n\n function Arena() {\n return {\n fields: [], // Array[Cell],\n fresh: function(init) {\n const cell = Cell(init)\n this.fields.push(cell)\n return cell;\n },\n backup: function() {\n return this.fields.map(c => c.backup())\n },\n restore: function(backup) {\n this.fields = backup.map(c => c());\n return this\n }\n }\n }\n\n const global = {\n fresh: function(init) { return Cell(init) },\n backup: function() {},\n restore: function(_) {}\n }\n\n // Lists / Pairs\n function Cons(head, tail) {\n return { head: head, tail: tail }\n }\n const Nil = null\n\n // reverseOnto[A, B, C](init: Frames[A, B], tail: Stack[B, C]): Stack[A, C]\n function reverseOnto(init, tail) {\n let rest = init;\n let result = tail;\n while (rest !== Nil) {\n result = Cons(rest.head, result)\n rest = rest.tail\n }\n return result\n }\n\n let _prompt = 2;\n\n // Monadic Style Runtime\n // ---------------------\n\n const toplevel = 1;\n\n // Result -- Trampoline\n function Step(c, k) {\n return { isStep: true, c: c, k: k }\n }\n function trampoline(r) {\n var res = r\n while (res !== null && res !== undefined && res.isStep) {\n res = res.c.apply(res.k)\n }\n return res\n }\n\n // Frame = A => Control[B]\n\n // Metacontinuations / Stacks\n // (frames: List, fields: [Cell], prompt: Int, tail: Stack) -> Stack\n function Stack(frames, arena, prompt, tail) {\n return { frames: frames, arena: arena, prompt: prompt, tail: tail }\n }\n function SubStack(frames, arena, backup, prompt, tail) {\n return { frames: frames, arena: arena, backup: backup, prompt: prompt, tail: tail }\n }\n const EmptyStack = null;\n\n // (stack: Stack, a: A) -> Step\n function apply(stack, a) {\n var s = stack;\n while (true) {\n if (s === EmptyStack) return a;\n const fs = s.frames;\n if (fs === Nil) { s = s.tail; continue }\n const result = fs.head(a);\n s.frames = fs.tail;\n return Step(result, s)\n }\n }\n\n // (subcont: Stack, stack: Stack) -> Stack\n function pushSubcont(subcont, stack) {\n var sub = subcont;\n var s = stack;\n\n while (sub !== EmptyStack) {\n s = Stack(sub.frames, sub.arena.restore(sub.backup), sub.prompt, s)\n sub = sub.tail\n }\n return s;\n }\n\n function flatMap(stack, f) {\n if (stack === EmptyStack) { return Stack(Cons(f, Nil), Arena(), null, stack) }\n var fs = stack.frames\n // it should be safe to mutate the frames field, since they are copied in the subcont\n stack.frames = Cons(f, fs)\n return stack\n }\n\n function splitAt(stack, p) {\n var sub = EmptyStack;\n var s = stack;\n\n while (s !== EmptyStack) {\n const currentPrompt = s.prompt;\n sub = SubStack(s.frames, s.arena, s.arena.backup(), currentPrompt, sub);\n s = s.tail;\n if (currentPrompt === p) { return Cons(sub, s) }\n }\n throw ("Prompt " + p + " not found")\n }\n\n function allocateInto(stack, p, cell) {\n var s = stack;\n\n while (s !== EmptyStack) {\n const currentPrompt = s.prompt\n if (currentPrompt === p) {\n return s.fields.push(cell);\n } else {\n s = s.tail\n }\n }\n throw ("Prompt " + p + " not found")\n }\n\n function withState(init, f) {\n return Control(k => {\n const cell = k.arena.fresh(init)\n return Step(f(cell), k)\n })\n }\n\n function withRegion(prog) {\n return Control(k => {\n return Step(prog(k.arena), k)\n })\n }\n\n function withStateIn(prompt, init, f) {\n const cell = Cell(init)\n\n if (prompt === toplevel) {\n return f(cell)\n } else {\n return Control(k => {\n allocateInto(k, prompt, cell);\n return Step(f(cell), k)\n })\n }\n }\n\n // Delimited Control\n function Control(apply) {\n const self = {\n apply: apply,\n run: () => trampoline(Step(self, Stack(Nil, global, toplevel, EmptyStack))),\n then: f => Control(k => Step(self, flatMap(k, f))),\n state: f => self.then(init => withState(init, f))\n }\n return self\n }\n\n const pure = a => Control(k => apply(k, a))\n\n const delayed = a => Control(k => apply(k, a()))\n\n const shift = (p, f) => Control(k => {\n const split = splitAt(k, p)\n const localCont = a => Control(k =>\n Step(pure(a), pushSubcont(split.head, k)))\n return Step(f(localCont), split.tail)\n })\n\n const callcc = f => Control(k => {\n return f(a => trampoline(apply(k, a)))\n })\n\n const abort = Control(k => $effekt.unit)\n\n\n const capture = f => {\n // [abort; f\n const action = () => f($effekt.unit).then(() => abort)\n return shift(toplevel)(k =>\n k({\n shouldRun: false,\n cont : () => k({ shouldRun: true, cont: action })\n })).then(a => a.shouldRun ? a.cont() : $effekt.pure(a.cont))\n }\n\n //const reset = (p, c => Control(k => Step(c, Stack(Nil, Arena(), p, k)))\n\n function handleMonadic(body) {\n const p = _prompt++;\n return Control(k => Step(body(p), Stack(Nil, Arena(), p, k)))\n }\n\n // Direct Style Runtime\n // --------------------\n\n // sealed trait Resumption[A, R]\n // case class Empty[A]() extends Resumption[A, A]\n // case class Segment[A, B, C](head: Stack[B, C], prompt: Prompt, tail: Resumption[A, B]) extends Resumption[A, C]\n class Segment {\n constructor(frames, prompt, region, backup, tail) {\n this.frames = frames;\n this.prompt = prompt;\n this.region = region;\n this.backup = backup;\n this.tail = tail;\n }\n }\n const Empty = null;\n\n // TODO maybe inline later to save native frames\n function handleOrRethrow(prompt, s, rest) {\n if (!(s instanceof Suspension)) throw s;\n\n const region = currentRegion\n const k = new Segment(reverseOnto(s.frames, rest), prompt, region, region.backup(), s.cont)\n if (s.prompt === prompt) {\n return s.body((value) => rewind(k, () => value))\n } else {\n throw new Suspension(s.prompt, s.body, Nil, k)\n }\n }\n\n function rewind(k, thunk) {\n if (k === Empty) {\n return thunk()\n } else {\n const prompt = k.prompt;\n const region = k.region;\n let rest = k.frames // the pure frames\n\n // The trampoline\n try {\n enterRegion(region);\n region.restore(k.backup);\n\n let curr = rewind(k.tail, thunk)\n while (rest !== Nil) {\n const f = rest.head\n rest = rest.tail\n curr = f(curr)\n }\n return curr\n } catch (s) {\n return handleOrRethrow(prompt, s, rest)\n } finally {\n leaveRegion()\n }\n }\n }\n\n\n // case class Suspend[A, X, Y, R](\n // body: Continuation[A, R] => R,\n // prompt: Prompt,\n // pure: Frames[X, Y],\n // cont: Resumption[A, X]\n // )\n class Suspension {\n constructor(p, body, frames, cont) {\n this.prompt = p;\n this.body = body;\n this.frames = frames;\n this.cont = cont;\n }\n }\n\n // initially the toplevel region.\n let currentRegion = global\n\n // a stack of regions\n let regions = []\n\n function enterRegion(r) {\n regions.push(currentRegion)\n currentRegion = r\n return r\n }\n\n function leaveRegion() {\n const leftRegion = currentRegion\n currentRegion = regions.pop()\n return leftRegion\n }\n\n return {\n // Common API\n // -----------\n constructor: (_, tag) => function() {\n return { __tag: tag, __data: Array.from(arguments) }\n },\n\n hole: function() { throw "Implementation missing" },\n\n // Monadic API\n // -----------\n pure: pure,\n callcc: callcc,\n capture: capture,\n delayed: delayed,\n handleMonadic: handleMonadic,\n ref: Cell,\n state: withState,\n shift: shift,\n _if: (c, thn, els) => c ? thn() : els(),\n withRegion: withRegion,\n\n\n // Direct style API\n // ----------------\n fresh: function(init) {\n return currentRegion.fresh(init)\n },\n\n freshPrompt: function() { return ++_prompt; },\n\n suspend: function(prompt, body) {\n _stacksize = 0;\n throw new Suspension(prompt, body, Nil, Empty)\n },\n suspend_bidirectional: function(prompt, caps, body) {\n throw new Suspension(prompt, body, Cons(thunk => thunk.apply(null, caps), Nil), Empty)\n },\n\n // suspension: the raised exception.\n push: function(suspension, frame) {\n if (!(suspension instanceof Suspension)) throw suspension;\n // Assuming `suspension` is a value or variable you want to return\n throw new Suspension(suspension.prompt, suspension.body,\n Cons(frame, suspension.frames), suspension.cont);\n },\n\n handle: function(prompt, s) {\n return handleOrRethrow(prompt, s, Nil)\n },\n\n freshRegion: function() {\n return enterRegion(new Arena)\n },\n\n leaveRegion: leaveRegion,\n\n global: global\n }\n})()\n\nObject.assign($effekt, $runtime);\n'),zs("js/unsafe/cont.effekt",'module unsafe/cont\n\n// The type of a captured continuation\nextern type Cont[A, B]\n\n// we mark this as {io} since pure functions should not take block parameters.\nextern io def cont[A, B] { r: A => B / {} }: Cont[A, B] = js "${box r}"\n\n// This is unsafe if the continuation left the scope of the\n// capabilities it closed over\nextern async def apply[A, B](k: Cont[A, B], a: A): B / {} = js "${k}(${a})"\n'),zs("js/text/regex.effekt",'module text/regex\n\nimport string\n\nextern type Regex\n\nrecord Match(matched: String, index: Int)\n\nextern pure def regex(str: String): Regex =\n js "new RegExp(${str})"\n\ndef exec(reg: Regex, str: String): Option[Match] =\n undefinedToOption(reg.unsafeExec(str)) match {\n case None() => None()\n case Some(v) => Some(Match(v.matched, v.index))\n }\n\n// internal representation { matched: String, index: Int }\nextern type RegexMatch\nextern pure def matched(r: RegexMatch): String = js "${r}.matched"\nextern pure def index(r: RegexMatch): Int = js "${r}.index"\n\nextern js !!!MULTILINEMARKER!!!\nfunction regex$exec(reg, str) {\n var res = reg.exec(str);\n if (res === null) { return undefined }\n else { return { matched: res[0], index: res.index } }\n}\n!!!MULTILINEMARKER!!!\n\n// internals\nextern io def unsafeExec(reg: Regex, str: String): RegexMatch =\n js "regex$exec(${reg}, ${str})"\n'),zs("js/web/dom.effekt",'module web/dom\n\nextern type Node\n\n// can be null\nextern pure def getElementById(id: String): Node =\n js "document.getElementById(${id})"\n\nextern pure def createElement(tag: String): Node =\n js "document.createElement(${tag})"\n\nextern pure def createTextNode(text: String): Node =\n js "document.createTextNode(${text})"\n\nextern pure def setAttribute(node: Node, key: String, value: String): Node =\n js "${node}.setAttribute(${key}, ${value})"\n\n// the string return type is wrong here...\nextern pure def getAttribute(node: Node, key: String): String =\n js "${node}.getAttribute(${key})"\n\nextern pure def appendChild(node: Node, child: Node): Node =\n js "${node}.appendChild(${child})"\n\nextern pure def innerHTML(node: Node, contents: String): Node =\n js "(function() { ${node}.innerHTML = ${contents}; return ${node} })()"\n\nextern type IdleDeadline\n\nextern pure def requestIdleCallback(callback: (IdleDeadline) => Unit at {io}): Unit =\n js "window.requestIdleCallback(deadline => ${callback}(deadline).run())"\n\nextern pure def didDimeout(deadline: IdleDeadline): Bool =\n js "${deadline}.didTimeout"\n\nextern pure def timeRemaining(deadline: IdleDeadline): Double =\n js "${deadline}.timeRemaining()"\n\nextern pure def onClick(node: Node, handler: () => Unit at {io}): Node =\n js "(function() { ${node}.onclick = () => ${handler}().run(); return ${node} })()"\n\nextern def sleep(n: Int): Unit =\n js "$effekt.callcc(k => window.setTimeout(() => k(null), ${n}))"\n\ndef clear(node: Node) = node.innerHTML("")\n'),zs("js/mutable/map.effekt",'module mutable/map\n\nimport array\n\n// A mutable map, backed by a JavaScript Map.\nextern type Map[K, V]\n\nextern pure def emptyMap[K, V](): Map[K, V] =\n js "new Map()"\n\ndef get[K, V](m: Map[K, V], key: K): Option[V] =\n undefinedToOption(m.unsafeGet(key))\n\nextern pure def unsafeGet[K, V](m: Map[K, V], key: K): V =\n js "${m}.get(${key})"\n\nextern js !!!MULTILINEMARKER!!!\nfunction map$update(m, key, value) {\n m.set(key, value);\n return $effekt.unit\n}\n!!!MULTILINEMARKER!!!\n\nextern io def update[K, V](m: Map[K, V], key: K, value: V): Unit =\n js "map$update(${m}, ${key}, ${value})"\n\nextern pure def values[K, V](map: Map[K, V]): Array[V] =\n js "Array.from(${map}.values())"\n\nextern pure def keys[K, V](map: Map[K, V]): Array[K] =\n js "Array.from(${map}.keys())"'),zs("common/string.effekt",'module string\n\nimport effekt\nimport option\nimport list\nimport exception\nimport result\n\n// TODO\n// - [ ] handle unicode codepoints (that can span two indices) correctly\n// - [ ] use string buffers or other buffers to implement repeated concatenation more efficiently (and `join`)\n// - [ ] maybe use native implementations for toInt, repeat, split, indexOf, etc.\n\n/**\n * Strings\n * - JS: Strings are represented as UTF-16 code units where some characters take 2 slots (surrogate pairs)\n * - ML: Strings are sequences of 8-bit characters (https://smlfamily.github.io/Basis/string.html)\n * - Chez: Strings are sequences of unicode characters (?)\n * - LLVM: UTF-8 (characters can take from 1-4 bytes).\n */\n\n\n// Operations\n// ----------\n\ndef substring(str: String, from: Int, to: Int): String = {\n def clamp(lower: Int, x: Int, upper: Int) = max(lower, min(x, upper))\n val lower = clamp(0, from, to)\n val upper = clamp(0, to, str.length)\n str.unsafeSubstring(lower, upper)\n}\n\ndef substring(str: String, from: Int): String =\n str.substring(from, str.length)\n\n\n/**\n * Checks whether str starts with the given prefix at `from`\n */\ndef isSubstringAt(str: String, prefix: String, from: Int): Bool = {\n with default[OutOfBounds, Bool] { false };\n\n val stringLength = str.length\n val prefixLength = prefix.length\n\n def done?(index: Int): Bool = index >= prefixLength\n def matches?(index: Int): Bool = prefix.charAt(index) == str.charAt(index + from)\n\n def go(index: Int): Bool =\n if (index.done?) true\n else if (index.matches?) go(index + 1) else false\n\n go(0)\n}\n\ndef startsWith(str: String, prefix: String): Bool =\n isSubstringAt(str, prefix, 0)\n\ndef endsWith(str: String, suffix: String): Bool =\n isSubstringAt(str, suffix, str.length - suffix.length)\n\n/**\n * Repeats the given string n-times.\n *\n * TODO use a more efficient way of appending strings like a buffer\n */\ndef repeat(str: String, n: Int): String = {\n def go(n: Int, result: String): String = {\n if (n == 0) result\n else go(n - 1, result ++ str)\n }\n go(n, "")\n}\n\n// TODO use .split() in JS\ndef split(str: String, sep: String): List[String] = {\n val strLength = str.length\n val sepLength = sep.length\n\n // special case: seperator is empty, just emit individual chars\n def empty(index: Int, components: List[String]): List[String] =\n if (index >= strLength) components.reverse\n else empty(index + 1, Cons(str.substring(index, index + 1), components))\n\n def go(lastIndex: Int, components: List[String]): List[String] =\n indexOf(str, sep, lastIndex) match {\n case None() =>\n Cons(str.substring(lastIndex, strLength), components).reverse\n case Some(index) =>\n go(index + sepLength, Cons(str.substring(lastIndex, index), components))\n }\n\n if (sepLength == 0) empty(0, Nil())\n else go(0, Nil())\n}\n\ndef join(strings: List[String], sep: String): String = {\n def go(strings: List[String], result: String): String = strings match {\n case Nil() => result\n case Cons(s, rest) => go(rest, result ++ sep ++ s)\n }\n strings match {\n case Nil() => ""\n case Cons(first, rest) => go(rest, first)\n }\n}\n\nextern pure def trim(str: String): String =\n js "${str}.trim()"\n\n// Parsing\n// -------\ndef toBool(s: String): Bool / Exception[WrongFormat] = s match {\n case "true" => true\n case "false" => false\n case _ => wrongFormat("Not a boolean value: \'" ++ s ++ "\'")\n}\n\n// TODO optimize (right now this will be horribly slow (compared to the native JS version)\ndef toInt(str: String): Int / Exception[WrongFormat] = {\n\n val zero = \'0\'.toInt\n\n def go(index: Int, acc: Int): Int = {\n result[Char, OutOfBounds] { str.charAt(index) } match {\n case Success(c) and c >= \'0\' and c <= \'9\' =>\n go(index + 1, 10 * acc + (c.toInt - zero))\n case Success(c) => wrongFormat("Not a valid number: \'" ++ str ++ "\'")\n // wrong index means we are done parsing\n case Error(_, _) => acc\n }\n }\n\n with default[OutOfBounds, Int] { wrongFormat("Empty string is not a valid number") };\n\n str.charAt(0) match {\n case \'-\' => 0 - go(1, 0)\n case _ => go(0, 0)\n }\n}\n\n// TODO optimize (right now this will be horribly slow (compared to the native JS version)\ndef toInt(str: String, base: Int): Int / Exception[WrongFormat] = {\n\n if( base > 36 || base < 1 ) {\n wrongFormat("Invalid base: " ++ base.show)\n }\n\n val zero = \'0\'.toInt\n val l_a = \'a\'.toInt\n val u_a = \'A\'.toInt\n\n def parseDigit(c: Char): Option[Int] = {\n if( c >= \'0\' and c <= \'9\' and c.toInt - zero < base ) {\n Some(c.toInt - zero)\n } else if( c >= \'a\' and c <= \'z\' and c.toInt - l_a < base - 10 ) {\n Some(c.toInt - l_a + 10)\n } else if( c >= \'A\' and c <= \'Z\' and c.toInt - u_a < base - 10) {\n Some(c.toInt - u_a + 10)\n } else {\n None()\n }\n }\n\n def go(index: Int, acc: Int): Int = {\n result[Char, OutOfBounds] { str.charAt(index) } match {\n case Success(c) and parseDigit(c) is Some(d) =>\n go(index + 1, base * acc + d)\n case Success(c) => wrongFormat("Not a valid number: \'" ++ str ++ "\'")\n // wrong index means we are done parsing\n case Error(_, _) => acc\n }\n }\n\n with default[OutOfBounds, Int] { wrongFormat("Empty string is not a valid number") };\n\n str.charAt(0) match {\n case \'-\' => 0 - go(1, 0)\n case _ => go(0, 0)\n }\n}\n\n// Native versions of toInt (unused right now)\n// ML: also accepts sml style `~2` for unary minus along with `+2` and `-2`\nextern pure def unsafeToInt(str: String): Int =\n js "(Number.isNaN(parseInt(${str})) ? undefined : parseInt(${str}))"\n chez "(string->number ${str})"\n ml "Int.fromString ${str}"\n\n\n/**\n * Returns the index of the first occurrence of `sub` in `str`\n */\ndef indexOf(str: String, sub: String): Option[Int] =\n indexOf(str, sub, 0)\n\ndef indexOf(str: String, sub: String, from: Int): Option[Int] = {\n val len = str.length\n def go(index: Int): Option[Int] =\n if (index >= len) None()\n else if (str.isSubstringAt(sub, index)) Some(index)\n else go(index + 1)\n\n go(from)\n}\n\n/**\n * Returns the index of the last occurence of `sub` in `str`\n */\ndef lastIndexOf(str: String, sub: String): Option[Int] =\n lastIndexOf(str, sub, str.length)\n\ndef lastIndexOf(str: String, sub: String, from: Int): Option[Int] = {\n def go(index: Int): Option[Int] =\n if (index < 0) None()\n else if (str.isSubstringAt(sub, index)) Some(index)\n else go(index - 1)\n\n go(from)\n}\n\n// TODO more efficient (native) implementations could be integrated as follows\n\n// extern pure def indexOf(str: String, sub: String): Option[Int] =\n// //js { nativeIndexOf(str, sub) }\n// default { indexOf(str, sub, 0) }\n\n// def nativeIndexOf(str: String, sub: String): Option[Int] = {\n// val index = str.unsafeIndexOf(sub)\n// if (index < 0) { None() } else { Some(index) }\n// }\n\n// extern pure def unsafeIndexOf(str: String, sub: String): Int =\n// js "${str}.indexOf(${sub})"\n\ninterface Stream {\n def emit(string: Char): Unit\n}\n\ndef string[T] { prog: => T / Stream }: (T, String) = <>\n\n// TODO implement after concurrent IO (we need to stub `process.stdout` in JS for browsers).\ndef printing[T] { prog: => T / Stream }: T = <>\n\n\n// ANSI escape codes\nnamespace ANSI {\n val BLACK = "\\u001b[30m"\n val RED = "\\u001b[31m"\n val GREEN = "\\u001b[32m"\n val YELLOW = "\\u001b[33m"\n val BLUE = "\\u001b[34m"\n val MAGENTA = "\\u001b[35m"\n val CYAN = "\\u001b[36m"\n val WHITE = "\\u001b[37m"\n\n val BG_BLACK = "\\u001b[40m"\n val BG_RED = "\\u001b[41m"\n val BG_GREEN = "\\u001b[42m"\n val BG_YELLOW = "\\u001b[43m"\n val BG_BLUE = "\\u001b[44m"\n val BG_MAGENTA = "\\u001b[45m"\n val BG_CYAN = "\\u001b[46m"\n val BG_WHITE = "\\u001b[47m"\n\n val RESET = "\\u001b[0m"\n}\n\n\n// Characters\n// ----------\n//\n// JS: Int (Unicode codepoints)\n// CS: ?\n// ML: 8-bit https://smlfamily.github.io/Basis/char.html\n// LLVM: i64 representing utf-8 (varying length 1-4 bytes)\n\nextern pure def toString(ch: Char): String =\n js "String.fromCodePoint(${ch})"\n chez "(string (integer->char ${ch}))"\n llvm !!!MULTILINEMARKER!!!\n %z = call %Pos @c_buffer_show_Char(%Int ${ch})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\n// Since we currently represent Char by integers in all backends, we could reuse comparison\nextern pure def toInt(ch: Char): Int =\n js "${ch}"\n chez "${ch}"\n ml "${ch}"\n llvm "ret %Int ${ch}"\n\nextern pure def toChar(codepoint: Int): Char =\n js "${codepoint}"\n chez "${codepoint}"\n ml "${codepoint}"\n llvm "ret %Int ${codepoint}"\n\n\nextern pure def infixLt(x: Char, y: Char): Bool =\n js "(${x} < ${y})"\n chez "(< ${x} ${y})"\n ml "(${x}: int) < ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = icmp slt %Int ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixLte(x: Char, y: Char): Bool =\n js "(${x} <= ${y})"\n chez "(<= ${x} ${y})"\n ml "(${x}: int) <= ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = icmp sle %Int ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixGt(x: Char, y: Char): Bool =\n js "(${x} > ${y})"\n chez "(> ${x} ${y})"\n ml "(${x}: int) > ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = icmp sgt %Int ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixGte(x: Char, y: Char): Bool =\n js "(${x} >= ${y})"\n chez "(>= ${x} ${y})"\n ml "(${x}: int) >= ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = icmp sge %Int ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\n// TODO iterator over codepoints (maybe use the JS primitive feature???)\n\nextern type StringIterator\n\n\n/**\n * Determines the number of bytes needed by a codepoint\n *\n * Also see: https://en.wikipedia.org/wiki/UTF-8\n */\ndef utf8ByteCount(codepoint: Char): Int = codepoint match {\n case c and c >= \\u0000 and c <= \\u007F => 1\n case c and c >= \\u0080 and c <= \\u07FF => 2\n case c and c >= \\u0800 and c <= \\uFFFF => 3\n case c and c >= \\u10000 and c <= \\u10FFFF => 4\n case c => panic("Not a valid code point")\n}\n\ndef utf16UnitCount(codepoint: Char): Int = codepoint match {\n case c and c >= \\u0000 and c <= \\uFFFF => 1\n case c and c >= \\u10000 and c <= \\u10FFFF => 4\n case c => panic("Not a valid code point")\n}\n\n// TODO this is copied from the LLVM-backend stdlib. Do we need this?\n// def showQuoted(s: String): String =\n// "\\x22" ++ s.map { c =>\n// if(c == "\\x22") {\n// "\\\\\\x22"\n// } else if (c == "\\\\") {\n// "\\\\\\\\"\n// } else c\n// } ++ "\\x22"\n\nextern pure def charWidth(c: Char): Int =\n // JavaScript strings are UTF-16 where every unicode character after 0xffff takes two units\n js "(${c} > 0xffff) ? 2 : 1"\n\ndef charAt(str: String, index: Int): Char / Exception[OutOfBounds] =\n if (index < 0 || index >= length(str))\n do raise(OutOfBounds(), "Index out of bounds: " ++ show(index) ++ " in string: \'" ++ str ++ "\'")\n else\n unsafeCharAt(str, index)\n\nextern pure def unsafeCharAt(str: String, n: Int): Char =\n js "${str}.codePointAt(${n})"\n chez "(char->integer (string-ref ${str} ${n}))"\n ml "(Char.ord (String.sub (${str}, ${n})))"\n llvm !!!MULTILINEMARKER!!!\n %x = call %Int @c_buffer_character_at(%Pos ${str}, i64 ${n})\n ret %Int %x\n !!!MULTILINEMARKER!!!\n'),zs("common/io/time.effekt",'module io/time\n\nextern llvm !!!MULTILINEMARKER!!!\n declare void @c_timer_start(%Int, %Stack)\n!!!MULTILINEMARKER!!!\n\nextern async def wait(millis: Int): Unit =\n js "$effekt.callcc(callback => setTimeout(() => callback($effekt.unit), ${millis}))"\n llvm !!!MULTILINEMARKER!!!\n call void @c_timer_start(%Int ${millis}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n'),zs("common/io/console.effekt",'module io/console\n\nimport io\n\ninterface Console {\n def readLine(): String\n def writeLine(content: String): Unit\n}\n\n/**\n * Handler for the console effect, using the Console available in js\n */\ndef console[R] { program: () => R / Console }: R = {\n val c = js::newConsole()\n try {\n val r = program()\n js::close(c)\n return r\n } with Console {\n def readLine() = resume(js::readLine(c))\n def writeLine(message) = resume(js::writeLine(c, message))\n }\n}\n\nnamespace js {\n\n extern jsNode !!!MULTILINEMARKER!!!\n const readline = require(\'node:readline\');\n !!!MULTILINEMARKER!!!\n\n extern type JSConsole\n\n extern io def newConsole(): JSConsole =\n jsNode !!!MULTILINEMARKER!!!readline.createInterface({\n input: process.stdin,\n output: process.stdout,\n })!!!MULTILINEMARKER!!!\n\n extern io def close(console: JSConsole): Unit =\n jsNode "${console}.close()"\n\n extern async def readLine(console: JSConsole): String =\n jsNode "$effekt.callcc(callback => ${console}.once(\'line\', callback))"\n\n extern io def writeLine(console: JSConsole, message: String): Unit =\n jsNode "${console}.output.write(${message} + \'\\\\n\')"\n}\n\nnamespace examples {\n\n def greeter() = {\n do writeLine("What\'s your name?")\n val name = do readLine();\n do writeLine("Hi " ++ name ++ ", nice to meet you!")\n }\n\n def main() = {\n with console;\n greeter()\n }\n\n}\n'),zs("common/io/filesystem.effekt","module io/filesystem\n\nimport bytes\n\nimport io\nimport io/error\n\n\n/**\n * Represents the file opening modes with their respective flags\n * Backends rely on the order of these\n */\ntype Mode {\n // Most common modes\n ReadOnly() // 'r' exception if does not exist\n WriteOnly() // 'w' created if does not exist, truncated if exists\n AppendOnly() // 'a' created if does not exist\n\n // Other modes\n ReadWrite() // 'w+' created if does not exist, truncated if exists\n ReadAppend() // 'a+' created if does not exist\n AppendExclusive() // 'ax' created if does not exist, fails if exists\n ReadAppendExclusive() // 'ax+' created if does not exist, fails if exists\n AppendSync() // 'as' created if does not exist, append in synchronous mode\n ReadAppendSync() // 'as+' created if does not exist, append in synchronous mode\n ReadSync() // 'rs' exception if does not exist, read in synchronous mode\n ReadWriteSync() // 'rs+' exception if does not exist, read/write in synchronous mode\n WriteExclusive() // 'wx' created if does not exist, truncated if exists, fails if exists\n ReadWriteExclusive() // 'wx+' created if does not exist, truncated if exists, fails if exists\n}\n\n\n/**\n * A file descriptor. Should not be inspected.\n */\ntype File = Int\n\n\n/**\n * Reads a file at given path as utf8 encoded string.\n */\ndef readFile(path: String): String / Exception[IOError] = {\n val fd = open(path, ReadOnly());\n with on[IOError].finalize { close(fd) }\n\n val readSize = 1048576 // 1MB\n var size = readSize\n var buffer = bytes(size)\n var offset = 0;\n\n def go(): String = {\n read(fd, buffer.slice(offset, min(readSize, size - offset)), -1) match {\n case 0 =>\n buffer.slice(0, offset).toUTF8\n case n and n < 0 => panic(\"Error!\")\n case n =>\n offset = offset + n\n\n // we are at maximum capacity\n if (n == readSize && (offset + readSize) > size) {\n val newSize = size * 2\n val newBuffer = bytes(newSize)\n copy(buffer, newBuffer, 0, 0, size)\n buffer = newBuffer\n size = newSize\n }\n go()\n }\n }\n\n go()\n}\n\n/**\n * Writes the (utf8 encoded) string `contents` into the specified file.\n */\ndef writeFile(path: String, contents: String): Unit / Exception[IOError] = {\n val fd = open(path, WriteOnly());\n with on[IOError].finalize { close(fd) }\n\n val writeSize = 1048576 // 1MB\n\n // this induces a memcpy that is not strictly necessary, since we use the buffer read-only\n val buffer = contents.fromUTF8\n val size = buffer.size\n\n var offset = 0;\n def remaining() = size - offset\n\n def go(): Unit =\n write(fd, buffer.slice(offset, min(writeSize, remaining())), -1) match {\n case 0 => ()\n case n and n < 0 => panic(\"Error!\")\n case n =>\n offset = offset + n;\n if (remaining() > 0) go()\n }\n\n go()\n}\n\n\n/**\n * An abstract interface applications can program against.\n *\n * Can be interpreted with the `filesystem` handler, or virtualized etc.\n *\n * See example below.\n */\ninterface Files {\n def readFile(path: String): String\n def writeFile(path: String, contents: String): Unit\n}\n\n/**\n * Using the file system via node.js\n */\ndef filesystem[R] { program: => R / Files }: R / Exception[IOError] = // TODO move Exception to be bidirectional\n try { program() }\n with Files {\n def readFile(path) = resume(readFile(path))\n def writeFile(path, contents) = resume(writeFile(path, contents))\n }\n\n\ndef open(path: String, mode: Mode): File / Exception[IOError] =\n internal::checkResult(internal::open(path, mode))\n\ndef read(fd: File, buffer: Bytes, offset: Int): Int / Exception[IOError] =\n internal::checkResult(internal::read(fd, buffer, offset))\n\ndef write(fd: File, buffer: Bytes, offset: Int): Int / Exception[IOError] =\n internal::checkResult(internal::write(fd, buffer, offset))\n\ndef close(fd: File): Unit / Exception[IOError] = {\n internal::checkResult(internal::close(fd)); ()\n}\n\nnamespace internal {\n\n extern js !!!MULTILINEMARKER!!!\n function modeName(mode) {\n switch (mode.__tag) {\n case 0: // ReadOnly()\n return 'r';\n case 1: // WriteOnly()\n return 'w';\n case 2: // AppendOnly()\n return 'a';\n case 3: // ReadWrite()\n return 'w+';\n case 4: // ReadAppend()\n return 'a+';\n case 5: // AppendExclusive()\n return 'ax';\n case 6: // ReadAppendExclusive()\n return 'ax+';\n case 7: // AppendSync()\n return 'as';\n case 8: // ReadAppendSync()\n return 'as+';\n case 9: // ReadSync()\n return 'rs';\n case 10: // ReadWriteSync()\n return 'rs+';\n case 11: // WriteExclusive()\n return 'wx';\n case 12: // ReadWriteExclusive()\n return 'wx+';\n default:\n // Invalid tag value\n return null;\n }\n }\n\n /**\n * Nodejs file operations expect buffers, but we represent buffers as typed arrays.\n * This function converts between the two without copying.\n */\n function toBuffer(buffer) {\n return Buffer.from(buffer.buffer, buffer.byteOffset, buffer.byteLength)\n }\n !!!MULTILINEMARKER!!!\n\n extern jsNode !!!MULTILINEMARKER!!!\n const fs = require(\"fs\");\n\n function open(path, mode, callback) {\n fs.open(path, modeName(mode), (err, fd) => {\n if (err) { callback(err.errno) } else { callback(fd) }\n })\n }\n\n function read(fd, buffer, offset, callback) {\n let position = offset === -1 ? null : offset;\n fs.read(fd, toBuffer(buffer), 0, buffer.length, position, (err, bytesRead) => {\n if (err) { callback(err.errno) } else { callback(bytesRead) }\n })\n }\n\n function write(fd, buffer, offset, callback) {\n let position = offset === -1 ? null : offset;\n fs.write(fd, toBuffer(buffer), 0, buffer.length, position, (err, bytesWritten) => {\n if (err) { callback(err.errno) } else { callback(bytesWritten) }\n })\n }\n\n function close(fd, callback) {\n fs.close(fd, (err) => {\n if (err) { callback(err.errno) } else { callback(0) }\n })\n }\n !!!MULTILINEMARKER!!!\n\n extern llvm !!!MULTILINEMARKER!!!\n declare void @c_fs_open(%Pos, %Pos, %Stack)\n declare void @c_fs_read(%Int, %Pos, %Int, %Stack)\n declare void @c_fs_write(%Int, %Pos, %Int, %Stack)\n declare void @c_fs_close(%Int, %Stack)\n !!!MULTILINEMARKER!!!\n\n extern async def open(path: String, mode: Mode): Int =\n jsNode \"$effekt.callcc(callback => open(${path}, ${mode}, callback))\"\n llvm !!!MULTILINEMARKER!!!\n call void @c_fs_open(%Pos ${path}, %Pos ${mode}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\n extern async def read(fd: Int, buffer: Bytes, offset: Int): Int =\n jsNode \"$effekt.callcc(callback => read(${fd}, ${buffer}, ${offset}, callback))\"\n llvm !!!MULTILINEMARKER!!!\n call void @c_fs_read(%Int ${fd}, %Pos ${buffer}, %Int ${offset}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\n extern async def write(fd: Int, buffer: Bytes, offset: Int): Int =\n jsNode \"$effekt.callcc(callback => write(${fd}, ${buffer}, ${offset}, callback))\"\n llvm !!!MULTILINEMARKER!!!\n call void @c_fs_write(%Int ${fd}, %Pos ${buffer}, %Int ${offset}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\n extern async def close(fd: Int): Int =\n jsNode \"$effekt.callcc(callback => close(${fd}, callback))\"\n llvm !!!MULTILINEMARKER!!!\n call void @c_fs_close(%Int ${fd}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\n def checkResult(result: Int): Int / Exception[IOError] =\n if (result < 0) {\n val ioError = fromNumber(internal::errorNumber(result));\n do raise[IOError](ioError, message(ioError))\n } else {\n result\n }\n}\n\nnamespace examples {\n\n // Example illustrating using abstract files interface\n // and interpreting it into asynchronous IO\n def copy(from: String, to: String): Unit / Files = {\n val contents = do readFile(from)\n do writeFile(to, contents)\n }\n\n def main() = {\n with on[IOError].panic;\n with filesystem;\n\n copy(\"README.md\", \"out/test.md\")\n }\n}\n"),zs("common/io/error.effekt",'module io/error\n\n/**\n * Errors defined by libuv that can occur in IO operations.\n *\n * In addition to the named error codes, we also assign each error a\n * (positive) integer value that is stable across the different platforms.\n *\n * For the mapping of IOError and code values, see function fromCode.\n *\n * While stable, this integer value is supposed to only be used internally.\n * All user-facing operations should use values of type IOError, instead.\n *\n * see: https://docs.libuv.org/en/v1.x/errors.html\n */\ntype IOError {\n E2BIG();\n EACCES();\n EADDRINUSE();\n EADDRNOTAVAIL();\n EAFNOSUPPORT();\n EAGAIN();\n EAI_ADDRFAMILY();\n EAI_AGAIN();\n EAI_BADFLAGS();\n EAI_BADHINTS();\n EAI_CANCELED();\n EAI_FAIL();\n EAI_FAMILY();\n EAI_MEMORY();\n EAI_NODATA();\n EAI_NONAME();\n EAI_OVERFLOW();\n EAI_PROTOCOL();\n EAI_SERVICE();\n EAI_SOCKTYPE();\n EALREADY();\n EBADF();\n EBUSY();\n ECANCELED();\n ECHARSET();\n ECONNABORTED();\n ECONNREFUSED();\n ECONNRESET();\n EDESTADDRREQ();\n EEXIST();\n EFAULT();\n EFBIG();\n EHOSTUNREACH();\n EINTR();\n EINVAL();\n EIO();\n EISCONN();\n EISDIR();\n ELOOP();\n EMFILE();\n EMSGSIZE();\n ENAMETOOLONG();\n ENETDOWN();\n ENETUNREACH();\n ENFILE();\n ENOBUFS();\n ENODEV();\n ENOENT();\n ENOMEM();\n ENONET();\n ENOPROTOOPT();\n ENOSPC();\n ENOSYS();\n ENOTCONN();\n ENOTDIR();\n ENOTEMPTY();\n ENOTSOCK();\n ENOTSUP();\n EOVERFLOW();\n EPERM();\n EPIPE();\n EPROTO();\n EPROTONOSUPPORT();\n EPROTOTYPE();\n ERANGE();\n EROFS();\n ESHUTDOWN();\n ESPIPE();\n ESRCH();\n ETIMEDOUT();\n ETXTBSY();\n EXDEV();\n UNKNOWN();\n EOF();\n ENXIO();\n EMLINK();\n ENOTTY();\n EFTYPE();\n EILSEQ();\n ESOCKTNOSUPPORT();\n EUNATCH()\n}\n\n/**\n * Corresponding error message for a libuv error\n *\n * see: https://docs.libuv.org/en/v1.x/errors.html\n */\ndef message(error: IOError): String = error match {\n case E2BIG() => "argument list too long"\n case EACCES() => "permission denied"\n case EADDRINUSE() => "address already in use"\n case EADDRNOTAVAIL() => "address not available"\n case EAFNOSUPPORT() => "address family not supported"\n case EAGAIN() => "resource temporarily unavailable"\n case EAI_ADDRFAMILY() => "address family not supported"\n case EAI_AGAIN() => "temporary failure"\n case EAI_BADFLAGS() => "bad ai_flags value"\n case EAI_BADHINTS() => "invalid value for hints"\n case EAI_CANCELED() => "request canceled"\n case EAI_FAIL() => "permanent failure"\n case EAI_FAMILY() => "ai_family not supported"\n case EAI_MEMORY() => "out of memory"\n case EAI_NODATA() => "no address"\n case EAI_NONAME() => "unknown node or service"\n case EAI_OVERFLOW() => "argument buffer overflow"\n case EAI_PROTOCOL() => "resolved protocol is unknown"\n case EAI_SERVICE() => "service not available for socket type"\n case EAI_SOCKTYPE() => "socket type not supported"\n case EALREADY() => "connection already in progress"\n case EBADF() => "bad file descriptor"\n case EBUSY() => "resource busy or locked"\n case ECANCELED() => "operation canceled"\n case ECHARSET() => "invalid Unicode character"\n case ECONNABORTED() => "software caused connection abort"\n case ECONNREFUSED() => "connection refused"\n case ECONNRESET() => "connection reset by peer"\n case EDESTADDRREQ() => "destination address required"\n case EEXIST() => "file already exists"\n case EFAULT() => "bad address in system call argument"\n case EFBIG() => "file too large"\n case EHOSTUNREACH() => "host is unreachable"\n case EINTR() => "interrupted system call"\n case EINVAL() => "invalid argument"\n case EIO() => "i/o error"\n case EISCONN() => "socket is already connected"\n case EISDIR() => "illegal operation on a directory"\n case ELOOP() => "too many symbolic links encountered"\n case EMFILE() => "too many open files"\n case EMSGSIZE() => "message too long"\n case ENAMETOOLONG() => "name too long"\n case ENETDOWN() => "network is down"\n case ENETUNREACH() => "network is unreachable"\n case ENFILE() => "file table overflow"\n case ENOBUFS() => "no buffer space available"\n case ENODEV() => "no such device"\n case ENOENT() => "no such file or directory"\n case ENOMEM() => "not enough memory"\n case ENONET() => "machine is not on the network"\n case ENOPROTOOPT() => "protocol not available"\n case ENOSPC() => "no space left on device"\n case ENOSYS() => "function not implemented"\n case ENOTCONN() => "socket is not connected"\n case ENOTDIR() => "not a directory"\n case ENOTEMPTY() => "directory not empty"\n case ENOTSOCK() => "socket operation on non-socket"\n case ENOTSUP() => "operation not supported on socket"\n case EOVERFLOW() => "value too large for defined data type"\n case EPERM() => "operation not permitted"\n case EPIPE() => "broken pipe"\n case EPROTO() => "protocol error"\n case EPROTONOSUPPORT() => "protocol not supported"\n case EPROTOTYPE() => "protocol wrong type for socket"\n case ERANGE() => "result too large"\n case EROFS() => "read-only file system"\n case ESHUTDOWN() => "cannot send after transport endpoint shutdown"\n case ESPIPE() => "invalid seek"\n case ESRCH() => "no such process"\n case ETIMEDOUT() => "connection timed out"\n case ETXTBSY() => "text file is busy"\n case EXDEV() => "cross-device link not permitted"\n case UNKNOWN() => "unknown error"\n case EOF() => "end of file"\n case ENXIO() => "no such device or address"\n case EMLINK() => "too many links"\n case ENOTTY() => "inappropriate ioctl for device"\n case EFTYPE() => "inappropriate file type or format"\n case EILSEQ() => "illegal byte sequence"\n case ESOCKTNOSUPPORT() => "socket type not supported"\n case EUNATCH() => "protocol driver not attached"\n}\n\n/**\n * Corresponding name of a libuv error\n *\n * see: https://docs.libuv.org/en/v1.x/errors.html\n */\ndef name(error: IOError): String = error match {\n case E2BIG() => "E2BIG"\n case EACCES() => "EACCES"\n case EADDRINUSE() => "EADDRINUSE"\n case EADDRNOTAVAIL() => "EADDRNOTAVAIL"\n case EAFNOSUPPORT() => "EAFNOSUPPORT"\n case EAGAIN() => "EAGAIN"\n case EAI_ADDRFAMILY() => "EAI_ADDRFAMILY"\n case EAI_AGAIN() => "EAI_AGAIN"\n case EAI_BADFLAGS() => "EAI_BADFLAGS"\n case EAI_BADHINTS() => "EAI_BADHINTS"\n case EAI_CANCELED() => "EAI_CANCELED"\n case EAI_FAIL() => "EAI_FAIL"\n case EAI_FAMILY() => "EAI_FAMILY"\n case EAI_MEMORY() => "EAI_MEMORY"\n case EAI_NODATA() => "EAI_NODATA"\n case EAI_NONAME() => "EAI_NONAME"\n case EAI_OVERFLOW() => "EAI_OVERFLOW"\n case EAI_PROTOCOL() => "EAI_PROTOCOL"\n case EAI_SERVICE() => "EAI_SERVICE"\n case EAI_SOCKTYPE() => "EAI_SOCKTYPE"\n case EALREADY() => "EALREADY"\n case EBADF() => "EBADF"\n case EBUSY() => "EBUSY"\n case ECANCELED() => "ECANCELED"\n case ECHARSET() => "ECHARSET"\n case ECONNABORTED() => "ECONNABORTED"\n case ECONNREFUSED() => "ECONNREFUSED"\n case ECONNRESET() => "ECONNRESET"\n case EDESTADDRREQ() => "EDESTADDRREQ"\n case EEXIST() => "EEXIST"\n case EFAULT() => "EFAULT"\n case EFBIG() => "EFBIG"\n case EHOSTUNREACH() => "EHOSTUNREACH"\n case EINTR() => "EINTR"\n case EINVAL() => "EINVAL"\n case EIO() => "EIO"\n case EISCONN() => "EISCONN"\n case EISDIR() => "EISDIR"\n case ELOOP() => "ELOOP"\n case EMFILE() => "EMFILE"\n case EMSGSIZE() => "EMSGSIZE"\n case ENAMETOOLONG() => "ENAMETOOLONG"\n case ENETDOWN() => "ENETDOWN"\n case ENETUNREACH() => "ENETUNREACH"\n case ENFILE() => "ENFILE"\n case ENOBUFS() => "ENOBUFS"\n case ENODEV() => "ENODEV"\n case ENOENT() => "ENOENT"\n case ENOMEM() => "ENOMEM"\n case ENONET() => "ENONET"\n case ENOPROTOOPT() => "ENOPROTOOPT"\n case ENOSPC() => "ENOSPC"\n case ENOSYS() => "ENOSYS"\n case ENOTCONN() => "ENOTCONN"\n case ENOTDIR() => "ENOTDIR"\n case ENOTEMPTY() => "ENOTEMPTY"\n case ENOTSOCK() => "ENOTSOCK"\n case ENOTSUP() => "ENOTSUP"\n case EOVERFLOW() => "EOVERFLOW"\n case EPERM() => "EPERM"\n case EPIPE() => "EPIPE"\n case EPROTO() => "EPROTO"\n case EPROTONOSUPPORT() => "EPROTONOSUPPORT"\n case EPROTOTYPE() => "EPROTOTYPE"\n case ERANGE() => "ERANGE"\n case EROFS() => "EROFS"\n case ESHUTDOWN() => "ESHUTDOWN"\n case ESPIPE() => "ESPIPE"\n case ESRCH() => "ESRCH"\n case ETIMEDOUT() => "ETIMEDOUT"\n case ETXTBSY() => "ETXTBSY"\n case EXDEV() => "EXDEV"\n case UNKNOWN() => "UNKNOWN"\n case EOF() => "EOF"\n case ENXIO() => "ENXIO"\n case EMLINK() => "EMLINK"\n case ENOTTY() => "ENOTTY"\n case EFTYPE() => "EFTYPE"\n case EILSEQ() => "EILSEQ"\n case ESOCKTNOSUPPORT() => "ESOCKTNOSUPPORT"\n case EUNATCH() => "EUNATCH"\n}\n\n/**\n * Translates a integer code value to an IOError.\n *\n * See documentation of type IOError for further information.\n */\ndef fromNumber(number: Int): IOError = number match {\n case 1 => EPERM()\n case 2 => ENOENT()\n case 3 => ESRCH()\n case 4 => EINTR()\n case 5 => EIO()\n case 6 => ENXIO()\n case 7 => E2BIG()\n case 9 => EBADF()\n case 11 => EAGAIN()\n case 12 => ENOMEM()\n case 13 => EACCES()\n case 14 => EFAULT()\n case 16 => EBUSY()\n case 17 => EEXIST()\n case 18 => EXDEV()\n case 19 => ENODEV()\n case 20 => ENOTDIR()\n case 21 => EISDIR()\n case 22 => EINVAL()\n case 23 => ENFILE()\n case 24 => EMFILE()\n case 25 => ENOTTY()\n case 26 => ETXTBSY()\n case 27 => EFBIG()\n case 28 => ENOSPC()\n case 29 => ESPIPE()\n case 30 => EROFS()\n case 31 => EMLINK()\n case 32 => EPIPE()\n case 34 => ERANGE()\n case 36 => ENAMETOOLONG()\n case 40 => ELOOP()\n case 75 => EOVERFLOW()\n case 79 => EFTYPE()\n case 84 => EILSEQ()\n case 88 => ENOTSOCK()\n case 89 => EDESTADDRREQ()\n case 90 => EMSGSIZE()\n case 91 => EPROTOTYPE()\n case 92 => ENOPROTOOPT()\n case 93 => EPROTONOSUPPORT()\n case 94 => ESOCKTNOSUPPORT()\n case 95 => ENOTSUP()\n case 97 => EAFNOSUPPORT()\n case 98 => EADDRINUSE()\n case 99 => EADDRNOTAVAIL()\n case 100 => ENETDOWN()\n case 101 => ENETUNREACH()\n case 103 => ECONNABORTED()\n case 104 => ECONNRESET()\n case 105 => ENOBUFS()\n case 106 => EISCONN()\n case 107 => ENOTCONN()\n case 110 => ETIMEDOUT()\n case 111 => ECONNREFUSED()\n case 113 => EHOSTUNREACH()\n case 114 => EALREADY()\n case 125 => ECANCELED()\n\n case 200 => EAI_ADDRFAMILY()\n case 201 => EAI_AGAIN()\n case 202 => EAI_BADFLAGS()\n case 203 => EAI_BADHINTS()\n case 204 => EAI_CANCELED()\n case 205 => EAI_FAIL()\n case 206 => EAI_FAMILY()\n case 207 => EAI_MEMORY()\n case 208 => EAI_NODATA()\n case 209 => EAI_NONAME()\n case 210 => EAI_OVERFLOW()\n case 211 => EAI_PROTOCOL()\n case 212 => EAI_SERVICE()\n case 213 => EAI_SOCKTYPE()\n case 215 => ECHARSET()\n case 216 => ENONET()\n case 217 => UNKNOWN()\n case 218 => EOF()\n case 219 => EUNATCH()\n case 220 => ESHUTDOWN()\n\n case _ => panic("Not a valid error code: " ++ show(number))\n}\n\nnamespace internal {\n\n extern llvm !!!MULTILINEMARKER!!!\n declare %Int @c_error_number(%Int)\n !!!MULTILINEMARKER!!!\n\n extern jsNode !!!MULTILINEMARKER!!!\n const os = require(\'node:os\');\n\n /**\n * Maps the error code to a Effekt-stable (platform independent) numeric value.\n *\n * Tries to use most common errno integer values, but introduces fresh values (> 200)\n * for those without common errno values.\n */\n function errorNumber(errno) {\n const errnoMap = {\n [os.constants.errno.EPERM]: 1,\n [os.constants.errno.ENOENT]: 2,\n [os.constants.errno.ESRCH]: 3,\n [os.constants.errno.EINTR]: 4,\n [os.constants.errno.EIO]: 5,\n [os.constants.errno.ENXIO]: 6,\n [os.constants.errno.E2BIG]: 7,\n [os.constants.errno.EBADF]: 9,\n [os.constants.errno.EAGAIN]: 11,\n [os.constants.errno.ENOMEM]: 12,\n [os.constants.errno.EACCES]: 13,\n [os.constants.errno.EFAULT]: 14,\n [os.constants.errno.EBUSY]: 16,\n [os.constants.errno.EEXIST]: 17,\n [os.constants.errno.EXDEV]: 18,\n [os.constants.errno.ENODEV]: 19,\n [os.constants.errno.ENOTDIR]: 20,\n [os.constants.errno.EISDIR]: 21,\n [os.constants.errno.EINVAL]: 22,\n [os.constants.errno.ENFILE]: 23,\n [os.constants.errno.EMFILE]: 24,\n [os.constants.errno.ENOTTY]: 25,\n [os.constants.errno.ETXTBSY]: 26,\n [os.constants.errno.EFBIG]: 27,\n [os.constants.errno.ENOSPC]: 28,\n [os.constants.errno.ESPIPE]: 29,\n [os.constants.errno.EROFS]: 30,\n [os.constants.errno.EMLINK]: 31,\n [os.constants.errno.EPIPE]: 32,\n [os.constants.errno.ERANGE]: 34,\n [os.constants.errno.ENAMETOOLONG]: 36,\n [os.constants.errno.ELOOP]: 40,\n [os.constants.errno.EOVERFLOW]: 75,\n [os.constants.errno.EFTYPE]: 79,\n [os.constants.errno.EILSEQ]: 84,\n [os.constants.errno.ENOTSOCK]: 88,\n [os.constants.errno.EDESTADDRREQ]: 89,\n [os.constants.errno.EMSGSIZE]: 90,\n [os.constants.errno.EPROTOTYPE]: 91,\n [os.constants.errno.ENOPROTOOPT]: 92,\n [os.constants.errno.EPROTONOSUPPORT]: 93,\n [os.constants.errno.ESOCKTNOSUPPORT]: 94,\n [os.constants.errno.ENOTSUP]: 95,\n [os.constants.errno.EAFNOSUPPORT]: 97,\n [os.constants.errno.EADDRINUSE]: 98,\n [os.constants.errno.EADDRNOTAVAIL]: 99,\n [os.constants.errno.ENETDOWN]: 100,\n [os.constants.errno.ENETUNREACH]: 101,\n [os.constants.errno.ECONNABORTED]: 103,\n [os.constants.errno.ECONNRESET]: 104,\n [os.constants.errno.ENOBUFS]: 105,\n [os.constants.errno.EISCONN]: 106,\n [os.constants.errno.ENOTCONN]: 107,\n [os.constants.errno.ETIMEDOUT]: 110,\n [os.constants.errno.ECONNREFUSED]: 111,\n [os.constants.errno.EHOSTUNREACH]: 113,\n [os.constants.errno.EALREADY]: 114,\n [os.constants.errno.ECANCELED]: 125,\n [os.constants.errno.EAI_ADDRFAMILY]: 200,\n [os.constants.errno.EAI_AGAIN]: 201,\n [os.constants.errno.EAI_BADFLAGS]: 202,\n [os.constants.errno.EAI_BADHINTS]: 203,\n [os.constants.errno.EAI_CANCELED]: 204,\n [os.constants.errno.EAI_FAIL]: 205,\n [os.constants.errno.EAI_FAMILY]: 206,\n [os.constants.errno.EAI_MEMORY]: 207,\n [os.constants.errno.EAI_NODATA]: 208,\n [os.constants.errno.EAI_NONAME]: 209,\n [os.constants.errno.EAI_OVERFLOW]: 210,\n [os.constants.errno.EAI_PROTOCOL]: 211,\n [os.constants.errno.EAI_SERVICE]: 212,\n [os.constants.errno.EAI_SOCKTYPE]: 213,\n [os.constants.errno.ECHARSET]: 215,\n [os.constants.errno.ENONET]: 216,\n [os.constants.errno.UNKNOWN]: 217,\n [os.constants.errno.EOF]: 218,\n [os.constants.errno.EUNATCH]: 219,\n [os.constants.errno.ESHUTDOWN]: 220\n };\n return errnoMap[-errno] || -1; // Default to -1 for unknown error names\n }\n !!!MULTILINEMARKER!!!\n\n extern pure def errorNumber(errno: Int): Int =\n jsNode "errorNumber(${errno})"\n llvm !!!MULTILINEMARKER!!!\n %z = call %Int @c_error_number(%Int ${errno})\n ret %Int %z\n !!!MULTILINEMARKER!!!\n\n}\n'),zs("common/io/network.effekt",'module io/network\n\nimport bytes\nimport io\n\nnamespace js {\n extern jsNode !!!MULTILINEMARKER!!!\n const net = require(\'node:net\');\n\n function listen(server, port, host, listener) {\n server.listen(port, host);\n server.on(\'connection\', listener);\n }\n !!!MULTILINEMARKER!!!\n\n extern type JSServer // = net.Server\n extern type JSSocket // = net.Socket\n extern io def server(): JSServer =\n jsNode "net.createServer()"\n extern io def listen(server: JSServer, port: Int, host: String, listener: JSSocket => Unit at {io, async, global}): Unit =\n jsNode "listen(${server}, ${port}, ${host}, (socket) => (${listener})(socket).run())"\n\n extern async def send(socket: JSSocket, data: Bytes): Unit =\n jsNode "$effekt.callcc(callback => ${socket}.write(${data}, callback))"\n\n extern async def receive(socket: JSSocket): Bytes =\n jsNode "$effekt.callcc(callback => ${socket}.once(\'data\', callback))"\n\n extern async def end(socket: JSSocket): Unit =\n jsNode "$effekt.callcc(callback => ${socket}.end(callback))"\n}\n\ninterface Socket {\n def send(message: Bytes): Unit\n def receive(): Bytes\n def end(): Unit\n}\n\ndef server(host: String, port: Int, handler: () => Unit / Socket at {io, async, global}): Unit = {\n val server = js::server();\n js::listen(server, port, host, box { socket =>\n println("New connection")\n spawn(box {\n try handler()\n with Socket {\n def send(message) =\n resume(js::send(socket, message))\n def receive() =\n resume(js::receive(socket))\n def end() =\n resume(js::end(socket))\n }\n })\n })\n}\n\n\nnamespace examples {\n def helloWorldApp(): Unit / Socket = {\n val request = do receive();\n\n println("Received a request: " ++ request.toUTF8)\n\n if (request.toUTF8.startsWith("GET /")) {\n do send(fromUTF8("HTTP/1.1 200 OK\\r\\n\\r\\nHello from Effekt!"))\n } else {\n do send("HTTP/1.1 400 Bad Request\\r\\n\\r\\n".fromUTF8)\n }\n do end()\n }\n\n // A server that just shows "Hello from Effekt!" on localhost:8080\n def main() = {\n val port = 8080\n println("Starting server on http://localhost:" ++ port.show)\n\n server("localhost", port, box {\n helloWorldApp()\n })\n }\n}\n'),zs("common/seq.effekt",'module seq\n\n/**\n * This file implements the [[Seq]] type as a general purpose functional sequence.\n *\n * Implemented as a 2-3 finger tree, it supports\n * - prepend and append in amortized O(1),\n * - concat(m, n) in O(log(min(m, n)))\n * - first and last in amortized O(1)\n * - size in amortized O(1)\n *\n * More information on finger trees:\n * https://www.staff.city.ac.uk/~ross/papers/FingerTree.pdf\n */\n\n/**\n * Sequences of elements\n *\n * They are represented as 2-3 finger trees.\n */\ntype Seq[A] {\n Empty()\n Single(value: A)\n Deep(size: Int, prefix: Digit[A], middle: Tree[A], suffix: Digit[A])\n}\n\n/**\n * Result of splitting a sequence at the front or back.\n */\ntype View[A] {\n IsEmpty()\n View(element: A, remainder: Seq[A])\n}\n\n/**\n * Exception[NoSuchElement] is raised when accessing non-existing elements\n * or splitting empty collections.\n */\nrecord NoSuchElement()\n\n\nrecord IndexOutOfBounds()\n\n\n\n// Implementation\n// ==============\n// Internal implementation note:\n// we use the following abbreviations:\n// - s: suffix\n// - p: prefix\n// - v: value\n// - n: node\n// - m: middle (spine)\n// - a,b,c,d: elements of a digit in this order\n//\n// we do not abbreviate:\n// - size\n\n\n// Internal Types\n// --------------\n\n/**\n * Internal grouping of 1-4 elements\n *\n * It is called digit since Okasaki (1998) calls finger trees "numerical operations".\n */\ntype Digit[A] {\n One(value: A)\n Two(first: A, second: A)\n Three(first: A, second: A, third: A)\n Four(first: A, second: A, third: A, fourth: A)\n}\n\n/**\n * Internal representation of a 2-3 tree\n */\ntype Node[A] {\n // These are necessary to avoid polymorphic recursion\n Leaf2(first: A, second: A)\n Leaf3(first: A, second: A, third: A)\n Node2(size: Int, first: Node[A], second: Node[A])\n Node3(size: Int, first: Node[A], second: Node[A], third: Node[A])\n}\n\n/**\n * Internal duplicate of Seq\n *\n * splitting into two type parameters is necessary since our MLton backend does\n * not support mutually recursive data type declarations.\n */\ntype Finger[A, N] {\n NoFinger()\n SingleFinger(value: Node[A])\n DeepFinger(size: Int, prefix: N, middle: Finger[A, N], suffix: N)\n}\n\n/**\n * Internal\n */\ntype Tree[A] = Finger[A, Digit[Node[A]]]\n\n/**\n * Internal\n */\ntype TreeView[A] {\n TreeIsEmpty()\n TreeView(element: Node[A], rest: Tree[A])\n}\n\n\n\n// Measure\n// -------\n\ndef size[A](node: Digit[A]): Int = node match {\n case One(_) => 1\n case Two(_, _) => 2\n case Three(_, _, _) => 3\n case Four(_, _, _, _) => 4\n}\n\ndef size[A](node: Node[A]): Int = node match {\n case Leaf2(_, _) => 2\n case Leaf3(_, _, _) => 3\n case Node2(size, _, _) => size\n case Node3(size, _, _, _) => size\n}\n\ndef sizeDeep[A](node: Digit[Node[A]]): Int = node match {\n case One(a) => a.size\n case Two(a, b) => a.size + b.size\n case Three(a, b, c) => a.size + b.size + c.size\n case Four(a, b, c, d) => a.size + b.size + c.size + d.size\n}\n\ndef size[A](tree: Tree[A]): Int = tree match {\n case NoFinger() => 0\n case SingleFinger(value) => value.size\n case DeepFinger(size, _, _, _) => size\n}\n\n/**\n * The size of the given sequence\n */\ndef size[A](seq: Seq[A]): Int = seq match {\n case Empty() => 0\n case Single(value) => 1\n case Deep(size, _, _, _) => size\n}\n\n\n// Internal smart constructors\n// ---------------------------\n\ndef deepFinger[A](prefix: Digit[Node[A]], middle: Tree[A], suffix: Digit[Node[A]]): Tree[A] =\n DeepFinger(prefix.sizeDeep + middle.size + suffix.sizeDeep, prefix, middle, suffix)\n\ndef deep[A](prefix: Digit[A], middle: Tree[A], suffix: Digit[A]): Seq[A] =\n Deep(prefix.size + middle.size + suffix.size, prefix, middle, suffix)\n\ndef node2[A](first: Node[A], second: Node[A]): Node[A] =\n Node2(first.size + second.size, first, second)\n\ndef node3[A](first: Node[A], second: Node[A], third: Node[A]): Node[A] =\n Node3(first.size + second.size + third.size, first, second, third)\n\n\n// Adding an element to the left\n// -----------------------------\n\ndef consFinger[A](head: Node[A], tail: Tree[A]): Tree[A] = tail match {\n case NoFinger() => SingleFinger(head)\n case SingleFinger(b) => deepFinger(One(head), NoFinger(), One(b))\n case DeepFinger(_, One(b), m, s) => deepFinger(Two(head, b), m, s)\n case DeepFinger(_, Two(b, c), m, s) => deepFinger(Three(head, b, c), m, s)\n case DeepFinger(_, Three(b, c, d), m, s) => deepFinger(Four(head, b, c, d), m, s)\n case DeepFinger(_, Four(b, c, d, e), m, s) =>\n deepFinger(Two(head, b), consFinger(node3(c, d, e), m), s)\n}\n\ndef cons[A](head: A, tail: Seq[A]): Seq[A] = tail match {\n case Empty() => Single(head)\n case Single(b) => Deep(2, One(head), NoFinger(), One(b))\n case Deep(size, One(b), m, s) => Deep(size + 1, Two(head, b), m, s)\n case Deep(size, Two(b, c), m, s) => Deep(size + 1, Three(head, b, c), m, s)\n case Deep(size, Three(b, c, d), m, s) => Deep(size + 1, Four(head, b, c, d), m, s)\n case Deep(size, Four(b, c, d, e), m, s) =>\n Deep(size + 1, Two(head, b), consFinger(Leaf3(c, d, e), m), s)\n}\n\n\n// Adding an element to the right\n// ------------------------------\n\ndef consFingerRight[A](init: Tree[A], last: Node[A]): Tree[A] = init match {\n case NoFinger() => SingleFinger(last)\n case SingleFinger(b) => deepFinger(One(b), NoFinger(), One(last))\n case DeepFinger(_, p, m, One(b)) => deepFinger(p, m, Two(b, last))\n case DeepFinger(_, p, m, Two(b, c)) => deepFinger(p, m, Three(b, c, last))\n case DeepFinger(_, p, m, Three(b, c, d)) => deepFinger(p, m, Four(b, c, d, last))\n case DeepFinger(_, p, m, Four(b, c, d, e)) =>\n deepFinger(p, consFingerRight(m, node3(b, c, d)), Two(e, last))\n}\n\ndef consRight[A](init: Seq[A], last: A): Seq[A] = init match {\n case Empty() => Single(last)\n case Single(b) => Deep(2, One(b), NoFinger(), One(last))\n case Deep(size, p, m, One(b)) => Deep(size + 1, p, m, Two(b, last))\n case Deep(size, p, m, Two(b, c)) => Deep(size + 1, p, m, Three(b, c, last))\n case Deep(size, p, m, Three(b, c, d)) => Deep(size + 1, p, m, Four(b, c, d, last))\n case Deep(size, p, m, Four(b, c, d, e)) =>\n Deep(size + 1, p, consFingerRight(m, Leaf3(b, c, d)), Two(e, last))\n}\n\n\n// Splitting the sequence on the left\n// ----------------------------------\n\ndef unconsFinger[A](seq: Tree[A]): TreeView[A] = seq match {\n case NoFinger() => TreeIsEmpty()\n case SingleFinger(v) => TreeView(v, NoFinger())\n // TODO this is a tail-call-modulo-context\n case DeepFinger(size, One(a), m, s) => TreeView(a, unconsFinger(m) match {\n case TreeIsEmpty() => s.toTree\n case TreeView(b, m2) => DeepFinger(size - a.size, b.toDigitNode, m2, s)\n })\n case DeepFinger(size, Two(a, b), m, s) => TreeView(a, DeepFinger(size - a.size, One(b), m, s))\n case DeepFinger(size, Three(a, b, c), m, s) => TreeView(a, DeepFinger(size - a.size, Two(b, c), m, s))\n case DeepFinger(size, Four(a, b, c, d), m, s) => TreeView(a, DeepFinger(size - a.size, Three(b, c, d), m, s))\n}\n\n// this could be called "uncons", "first", "front", "head", "popFront", "start", "popStart"\ndef uncons[A](seq: Seq[A]): View[A] = seq match {\n case Empty() => IsEmpty()\n case Single(v) => View(v, Empty())\n case Deep(size, One(a), m, s) => View(a, unconsFinger(m) match {\n case TreeIsEmpty() => s.toSeq\n case TreeView(b, m2) => Deep(size - 1, b.toDigit, m2, s)\n })\n case Deep(size, Two(a, b), m, s) => View(a, Deep(size - 1, One(b), m, s))\n case Deep(size, Three(a, b, c), m, s) => View(a, Deep(size - 1, Two(b, c), m, s))\n case Deep(size, Four(a, b, c, d), m, s) => View(a, Deep(size - 1, Three(b, c, d), m, s))\n}\n\ndef head[A](seq: Seq[A]): A / Exception[NoSuchElement] = seq.uncons match {\n case IsEmpty() => raise(NoSuchElement(), "Calling `head` on empty sequence.")\n case View(element, _) => element\n}\n\ndef tail[A](seq: Seq[A]): Seq[A] / Exception[NoSuchElement] = seq.uncons match {\n case IsEmpty() => raise(NoSuchElement(), "Calling `tail` on empty sequence.")\n case View(element, rest) => rest\n}\n\n\n// Splitting the sequence on the right\n// -----------------------------------\n\ndef unconsRightFinger[A](seq: Tree[A]): TreeView[A] = seq match {\n case NoFinger() => TreeIsEmpty()\n case SingleFinger(v) => TreeView(v, NoFinger())\n // TODO this is a tail-call-modulo-context\n case DeepFinger(size, p, m, One(a)) => TreeView(a, unconsRightFinger(m) match {\n case TreeIsEmpty() => p.toTree\n case TreeView(b, m2) => DeepFinger(size - a.size, p, m2, b.toDigitNode)\n })\n case DeepFinger(size, p, m, Two(a, b)) => TreeView(b, DeepFinger(size - b.size, p, m, One(a)))\n case DeepFinger(size, p, m, Three(a, b, c)) => TreeView(c, DeepFinger(size - c.size, p, m, Two(a, b)))\n case DeepFinger(size, p, m, Four(a, b, c, d)) => TreeView(d, DeepFinger(size - d.size, p, m, Three(a, b, c)))\n}\n\n// this could be called "uncons", "first", "front", "head", "popFront", "start", "popStart"\ndef unconsRight[A](seq: Seq[A]): View[A] = seq match {\n case Empty() => IsEmpty()\n case Single(v) => View(v, Empty())\n case Deep(size, p, m, One(a)) => View(a, unconsFinger(m) match {\n case TreeIsEmpty() => p.toSeq\n case TreeView(b, m2) => Deep(size - 1, p, m2, b.toDigit)\n })\n case Deep(size, p, m, Two(a, b)) => View(b, Deep(size - 1, p, m, One(a)))\n case Deep(size, p, m, Three(a, b, c)) => View(c, Deep(size - 1, p, m, Two(a, b)))\n case Deep(size, p, m, Four(a, b, c, d)) => View(d, Deep(size - 1, p, m, Three(a, b, c)))\n}\n\n\n// Concatenating Sequences\n// -----------------------\n\ndef concatTree[A](first: Tree[A], middle: List[Node[A]], second: Tree[A]): Tree[A] = {\n\n // can we get rid of the list?\n\n def prepend(nodes: List[Node[A]], tree: Tree[A]): Tree[A] = nodes match {\n case Nil() => tree\n case Cons(head, tail) => consFinger(head, prepend(tail, tree))\n }\n\n def append(tree: Tree[A], nodes: List[Node[A]]): Tree[A] = nodes match {\n case Nil() => tree\n case Cons(head, tail) => append(consFingerRight(tree, head), tail)\n }\n\n def consFinger(digit: Digit[Node[A]], tree: Tree[A]): Tree[A] = digit match {\n case One(a) => consFinger(a, tree)\n case Two(a, b) => consFinger(a, consFinger(b, tree))\n case Three(a, b, c) => consFinger(a, consFinger(b, consFinger(c, tree)))\n case Four(a, b, c, d) => consFinger(a, consFinger(b, consFinger(c, consFinger(d, tree))))\n }\n\n def toList(digit: Digit[Node[A]]): List[Node[A]] = digit match {\n case One(a) => Cons(a, Nil())\n case Two(a, b) => Cons(a, Cons(b, Nil()))\n case Three(a, b, c) => Cons(a, Cons(b, Cons(c, Nil())))\n case Four(a, b, c, d) => Cons(a, Cons(b, Cons(c, Cons(d, Nil()))))\n }\n\n def rebalance(nodes: List[Node[A]]): List[Node[A]] = nodes match {\n case Cons(a, Cons(b, Nil())) => Cons(node2(a, b), Nil())\n case Cons(a, Cons(b, Cons(c, Nil()))) => Cons(node3(a, b, c), Nil())\n case Cons(a, Cons(b, Cons(c, Cons(d, Nil())))) => Cons(node2(a, b), Cons(node2(c, d), Nil()))\n case Cons(a, Cons(b, Cons(c, rest))) => Cons(node3(a, b, c), rebalance(rest))\n case _ => <>\n }\n\n def go(prefix: Tree[A], middle: List[Node[A]], suffix: Tree[A]): Tree[A] =\n (prefix, suffix) match {\n case (NoFinger(), s) => prepend(middle, s)\n case (p, NoFinger()) => append(p, middle)\n case (SingleFinger(v), s) => consFinger(v, prepend(middle, s))\n case (p, SingleFinger(v)) => consFingerRight(append(p, middle), v)\n case (DeepFinger(size1, p1, m1, s1), DeepFinger(size2, p2, m2, s2)) =>\n val list = s1.toList.append(middle).append(p2.toList)\n DeepFinger(size1 + size2, p1, go(m1, rebalance(list), m2), s2)\n }\n\n go(first, middle, second)\n}\n\ndef concat[A](first: Seq[A], second: Seq[A]): Seq[A] = {\n def rebalance(t: List[A]): List[Node[A]] = t match {\n case Cons(a, Cons(b, Nil())) => Cons(Leaf2(a, b), Nil())\n case Cons(a, Cons(b, Cons(c, Nil()))) => Cons(Leaf3(a, b, c), Nil())\n case Cons(a, Cons(b, Cons(c, Cons(d, Nil())))) => Cons(Leaf2(a, b), Cons(Leaf2(c, d), Nil()))\n case Cons(a, Cons(b, Cons(c, rest))) => Cons(Leaf3(a, b, c), rebalance(rest))\n case _ => <>\n }\n\n (first, second) match {\n case (Empty(), other) => other\n case (other, Empty()) => other\n case (Single(v), other) => cons(v, other)\n case (other, Single(v)) => consRight(other, v)\n case (Deep(size1, p1, m1, s1), Deep(size2, p2, m2, s2)) =>\n Deep(size1 + size2, p1, concatTree(m1, rebalance(s1.toList.append(p2.toList)), m2), s2)\n }\n}\n\n\n// Predicates\n// ----------\n\ndef isEmpty[A](seq: Seq[A]): Bool = seq match {\n case Empty() => true\n case _ => false\n}\n\ndef nonEmpty[A](seq: Seq[A]): Bool = seq match {\n case Empty() => false\n case _ => true\n}\n\ndef reverse[A](seq: Seq[A]): Seq[A] = {\n\n // invariant for all internal functions: element is in the sequence\n\n // this is tail-recursive-modulo-context\n def go(node: Node[A]): Node[A] = node match {\n case Leaf2(a, b) => Leaf2(b, a)\n case Leaf3(a, b, c) => Leaf3(c, b, a)\n case Node2(size, a, b) => Node2(size, go(b), go(a))\n case Node3(size, a, b, c) => Node3(size, go(c), go(b), go(a))\n }\n def go(digit: Digit[A]): Digit[A] = digit match {\n case One(a) => One(a)\n case Two(a, b) => Two(b, a)\n case Three(a, b, c) => Three(c, b, a)\n case Four(a, b, c, d) => Four(d, c, b, a)\n }\n def go(digits: Digit[Node[A]]): Digit[Node[A]] = digits match {\n case One(a) => One(go(a))\n case Two(a, b) => Two(go(b), go(a))\n case Three(a, b, c) => Three(go(c), go(b), go(a))\n case Four(a, b, c, d) => Four(go(d), go(c), go(b), go(a))\n }\n def go(tree: Tree[A]): Tree[A] = tree match {\n case NoFinger() => NoFinger()\n case SingleFinger(value) => SingleFinger(go(value))\n case DeepFinger(size, p, m, s) => DeepFinger(size, go(s), go(m), go(p))\n }\n\n seq match {\n case Empty() => Empty()\n case Single(value) => Single(value)\n case Deep(size, p, m, s) => Deep(size, go(s), go(m), go(p))\n }\n}\n\n\n/**\n * Random access\n */\ndef index[A](seq: Seq[A], index: Int): A / Exception[NoSuchElement] = {\n\n // invariant for all internal functions: element is in the sequence\n\n def go(node: Node[A], index: Int): A = node match {\n case Leaf2(a, b) => if (index == 0) a else b\n case Leaf3(a, b, c) => if (index == 0) a else if (index == 1) b else c\n case Node2(_, a, b) =>\n val asize = a.size\n if (index < asize) go(a, index) else go(b, index - asize)\n case Node3(_, a, b, c) =>\n val asize = a.size\n if (index < asize) go(a, index) else {\n val bsize = asize + b.size\n if (index < bsize) go(b, index - asize) else go(c, index - bsize)\n }\n }\n def go(digit: Digit[A], index: Int): A = digit match {\n case One(a) => a\n case Two(a, b) => if (index == 0) a else b\n case Three(a, b, c) => if (index == 0) a else if (index == 1) b else c\n case Four(a, b, c, d) => if (index == 0) a else if (index == 1) b else if (index == 2) c else d\n }\n def go(digits: Digit[Node[A]], index: Int): A = digits match {\n case One(a) => go(a, index)\n case Two(a, b) =>\n val asize = a.size\n if (index < asize) go(a, index) else go(b, index - asize)\n case Three(a, b, c) =>\n val asize = a.size\n if (index < asize) go(a, index) else {\n val bsize = asize + b.size\n if (index < bsize) go(b, index - asize) else {\n go(c, index - bsize)\n }\n }\n case Four(a, b, c, d) =>\n val asize = a.size\n if (index < asize) go(a, index) else {\n val bsize = asize + b.size\n if (index < bsize) go(b, index - asize) else {\n val csize = bsize + c.size\n if (index < csize) go(c, index - bsize) else {\n go(d, index - csize)\n }\n }\n }\n }\n def go(tree: Tree[A], index: Int): A = tree match {\n case NoFinger() => <{ "Cannot happen!" }>\n case SingleFinger(value) => go(value, index)\n case DeepFinger(_, p, m, s) =>\n val psize = p.sizeDeep\n if (index < psize) { go(p, index) } else {\n val msize = psize + m.size\n if (index < msize) { go(m, index - psize) }\n else { go(s, index - msize) }\n }\n }\n\n if (index >= seq.size) raise(NoSuchElement(), "...")\n else seq match {\n case Empty() => <{ "Cannot happen!" }>\n case Single(v) => v // has to be the right one due to the check above\n case Deep(_, p, m, s) =>\n val psize = p.size\n if (index < psize) { go(p, index) } else {\n val msize = psize + m.size\n if (index < msize) { go(m, index - psize) }\n else { go(s, index - msize) }\n }\n }\n}\n\n/**\n * Random access\n */\ndef update[A](seq: Seq[A], index: Int, value: A): Seq[A] / Exception[NoSuchElement] = {\n\n // invariant for all internal functions: element is in the sequence\n\n // this is tail-recursive-modulo-context\n def go(node: Node[A], index: Int): Node[A] = node match {\n case Leaf2(a, b) => if (index == 0) Leaf2(value, b) else Leaf2(a, value)\n case Leaf3(a, b, c) => if (index == 0) Leaf3(value, b, c) else if (index == 1) Leaf3(a, value, c) else Leaf3(a, b, value)\n case Node2(size, a, b) =>\n val asize = a.size\n if (index < asize) Node2(size, go(a, index), b) else Node2(size, a, go(b, index - asize))\n case Node3(size, a, b, c) =>\n val asize = a.size\n if (index < asize) Node3(size, go(a, index), b, c) else {\n val bsize = asize + b.size\n if (index < bsize) Node3(size, a, go(b, index - asize), c) else Node3(size, a, b, go(c, index - bsize))\n }\n }\n def go(digit: Digit[A], index: Int): Digit[A] = digit match {\n case One(a) => One(value)\n case Two(a, b) => if (index == 0) Two(value, b) else Two(a, value)\n case Three(a, b, c) => if (index == 0) Three(value, b, c) else if (index == 1) Three(a, value, c) else Three(a, b, value)\n case Four(a, b, c, d) => if (index == 0) Four(value, b, c, d) else if (index == 1) Four(a, value, c, d) else if (index == 2) Four(a, b, value, d) else Four(a, b, c, value)\n }\n def go(digits: Digit[Node[A]], index: Int): Digit[Node[A]] = digits match {\n case One(a) => One(go(a, index))\n case Two(a, b) =>\n val asize = a.size\n if (index < asize) Two(go(a, index), b) else Two(a, go(b, index - asize))\n case Three(a, b, c) =>\n val asize = a.size\n if (index < asize) Three(go(a, index), b, c) else {\n val bsize = asize + b.size\n if (index < bsize) Three(a, go(b, index - asize), c) else {\n Three(a, b, go(c, index - bsize))\n }\n }\n case Four(a, b, c, d) =>\n val asize = a.size\n if (index < asize) Four(go(a, index), b, c, d) else {\n val bsize = asize + b.size\n if (index < bsize) Four(a, go(b, index - asize), c, d) else {\n val csize = bsize + c.size\n if (index < csize) Four(a, b, go(c, index - bsize), d) else {\n Four(a, b, c, go(d, index - csize))\n }\n }\n }\n }\n def go(tree: Tree[A], index: Int): Tree[A] = tree match {\n case NoFinger() => <{ "Cannot happen!" }>\n case SingleFinger(value) => SingleFinger(go(value, index))\n case DeepFinger(size, p, m, s) =>\n val psize = p.sizeDeep\n if (index < psize) { DeepFinger(size, go(p, index), m, s) } else {\n val msize = psize + m.size\n if (index < msize) { DeepFinger(size, p, go(m, index - psize), s) }\n else { DeepFinger(size, p, m, go(s, index - msize)) }\n }\n }\n\n if (index >= seq.size) raise(NoSuchElement(), "...")\n else seq match {\n case Empty() => <{ "Cannot happen!" }>\n case Single(_) => Single(value) // has to be the right one due to the check above\n case Deep(size, p, m, s) =>\n val psize = p.size\n if (index < psize) { Deep(size, go(p, index), m, s) } else {\n val msize = psize + m.size\n if (index < msize) { Deep(size, p, go(m, index - psize), s) }\n else { Deep(size, p, m, go(s, index - msize)) }\n }\n }\n}\n\n\ndef each[A](seq: Seq[A]) { consume: (A) => Unit }: Unit = {\n\n def go(digit: Digit[A]): Unit = digit match {\n case One(a) => consume(a)\n case Two(a, b) => consume(a); consume(b)\n case Three(a, b, c) => consume(a); consume(b); consume(c)\n case Four(a, b, c, d) => consume(a); consume(b); consume(c); consume(d)\n }\n\n def go(node: Node[A]): Unit = node match {\n case Leaf2(a, b) => consume(a); consume(b)\n case Leaf3(a, b, c) => consume(a); consume(b); consume(c)\n case Node2(_, a, b) => go(a); go(b)\n case Node3(_, a, b, c) => go(a); go(b); go(c)\n }\n\n def go(digit: Digit[Node[A]]): Unit = digit match {\n case One(a) => go(a)\n case Two(a, b) => go(a); go(b)\n case Three(a, b, c) => go(a); go(b); go(c)\n case Four(a, b, c, d) => go(a); go(b); go(c); go(d)\n }\n\n def go(tree: Tree[A]): Unit = tree match {\n case NoFinger() => ()\n case SingleFinger(v) => go(v)\n case DeepFinger(_, p, m, s) => go(p); go(m); go(s)\n }\n\n seq match {\n case Empty() => ()\n case Single(v) => consume(v)\n case Deep(_, p, m, s) => go(p); go(m); go(s)\n }\n}\n\ndef each[A](seq: Seq[A]) { f: (A) {Control} => Unit }: Unit = try {\n seq.each { (el) =>\n try { f(el) {inner} } with inner: Control {\n def break() = outer.break()\n def continue() = ()\n }\n }\n} with outer: Control {\n def break() = ()\n def continue() = ()\n}\n\ndef eachReverse[A](seq: Seq[A]) { consume: A => Unit }: Unit = {\n\n def go(digit: Digit[A]): Unit = digit match {\n case One(a) => consume(a)\n case Two(a, b) => consume(b); consume(a)\n case Three(a, b, c) => consume(c); consume(b); consume(a)\n case Four(a, b, c, d) => consume(d); consume(c); consume(b); consume(a)\n }\n\n def go(node: Node[A]): Unit = node match {\n case Leaf2(a, b) => consume(b); consume(a)\n case Leaf3(a, b, c) => consume(c); consume(b); consume(a)\n case Node2(_, a, b) => go(b); go(a)\n case Node3(_, a, b, c) => go(c); go(b); go(a)\n }\n\n def go(digit: Digit[Node[A]]): Unit = digit match {\n case One(a) => go(a)\n case Two(a, b) => go(b); go(a)\n case Three(a, b, c) => go(c); go(b); go(a)\n case Four(a, b, c, d) => go(d); go(c); go(b); go(a)\n }\n\n def go(tree: Tree[A]): Unit = tree match {\n case NoFinger() => ()\n case SingleFinger(v) => go(v)\n case DeepFinger(_, p, m, s) => go(s); go(m); go(p)\n }\n\n seq match {\n case Empty() => ()\n case Single(v) => consume(v)\n case Deep(_, p, m, s) => go(s); go(m); go(p)\n }\n}\n\ndef eachReverse[A](seq: Seq[A]) { f: (A) {Control} => Unit }: Unit = try {\n seq.eachReverse { (el) =>\n try { f(el) {inner} } with inner: Control {\n def break() = outer.break()\n def continue() = ()\n }\n }\n} with outer: Control {\n def break() = ()\n def continue() = ()\n}\n\ndef toList[A](seq: Seq[A]): List[A] = {\n var list: List[A] = Nil()\n seq.eachReverse { el => list = Cons(el, list) }\n list\n}\n\ndef toSeq[A](l: List[A]): Seq[A] = {\n def go(l: List[A], acc: Seq[A]): Seq[A] = l match {\n case Nil() => acc\n case Cons(head, tail) => go(tail, consRight(acc, head))\n }\n go(l, Empty())\n}\n\n\nrecord Split[A, R](prefix: R, element: A, suffix: R)\n\ndef splitAt[A](seq: Seq[A], index: Int): (Seq[A], Seq[A]) / Exception[IndexOutOfBounds] = {\n\n // invariant index is in digit\n def go(digit: Digit[A], index: Int): Split[A, List[A]] = digit match {\n case One(a) => Split([], a, [])\n case Two(a, b) => if (index == 0) Split([], a, [b]) else Split([a], b, [])\n case Three(a, b, c) =>\n if (index == 0) Split([], a, [b, c])\n else if (index == 1) Split([a], b, [c])\n else Split([a, b], c, [])\n case Four(a, b, c, d) =>\n if (index == 0) Split([], a, [b, c, d])\n else if (index == 1) Split([a], b, [c, d])\n else if (index == 2) Split([a, b], c, [d])\n else Split([a, b, c], d, [])\n }\n\n def go(digit: Digit[Node[A]], index: Int): Split[Node[A], List[Node[A]]] = digit match {\n case One(a) => Split([], a, [])\n case Two(a, b) =>\n val asize = a.size\n if (index < asize) Split([], a, [b]) else Split([a], b, [])\n case Three(a, b, c) =>\n val asize = a.size\n if (index < asize) Split([], a, [b, c])\n else {\n val bsize = asize + b.size\n if (index < bsize) Split([a], b, [c])\n else Split([a, b], c, [])\n }\n case Four(a, b, c, d) =>\n val asize = a.size\n if (index < asize) Split([], a, [b, c, d])\n else {\n val bsize = asize + b.size\n if (index < bsize) Split([a], b, [c, d])\n else {\n val csize = bsize + c.size\n if (index < csize) Split([a, b], c, [d])\n else Split([a, b, c], d, [])\n }\n }\n }\n\n def left(p: List[Node[A]], m: Tree[A], s: Digit[Node[A]]): Tree[A] = p match {\n case Nil() => m.unconsFinger match {\n case TreeIsEmpty() => s.toTree\n case TreeView(a, m2) => deepFinger(a.toDigitNode, m2, s)\n }\n case _ => deepFinger(p.toDigitNode, m, s)\n }\n\n def left(p: List[A], m: Tree[A], s: Digit[A]): Seq[A] = p match {\n case Nil() => m.unconsFinger match {\n case TreeIsEmpty() => s.toSeq\n case TreeView(a, m2) => deep(a.toDigit, m2, s)\n }\n case _ => deep(p.toDigitNode, m, s)\n }\n def right(p: Digit[A], m: Tree[A], s: List[A]): Seq[A] = s match {\n case Nil() => m.unconsRightFinger match {\n case TreeIsEmpty() => p.toSeq\n case TreeView(a, m2) => deep(p, m2, a.toDigit)\n }\n case _ => deep(p, m, s.toDigitNode)\n }\n\n\n def right(p: Digit[Node[A]], m: Tree[A], s: List[Node[A]]): Tree[A] = s match {\n case Nil() => m.unconsRightFinger match {\n case TreeIsEmpty() => p.toTree\n case TreeView(a, m2) => deepFinger(p, m2, a.toDigitNode)\n }\n case _ => deepFinger(p, m, s.toDigitNode)\n }\n\n def go(tree: Tree[A], index: Int): Split[Node[A], Tree[A]] = tree match {\n case NoFinger() => println("Cannot happen!"); <{ "Cannot happen!" }>\n case SingleFinger(value) => Split(NoFinger(), value, NoFinger())\n case DeepFinger(size, p, m, s) =>\n val psize = p.sizeDeep;\n // It is in the prefix\n if (index < psize) {\n val Split(pp, v, ps) = go(p, index);\n Split(pp.toTree, v, left(ps, m, s))\n } else {\n val msize = psize + m.size\n // It is somewhere in the spine\n if (index < msize) {\n val Split(mp, v, ms) = go(m, index - psize);\n val mpsize = psize + mp.size;\n val Split(vp, w, vs) = go(v.toDigitNode, index - mpsize);\n Split(right(p, mp, vp), w, left(vs, ms, s))\n // It is somewhere in the suffix\n } else {\n val Split(sp, v, ss) = go(s, index - msize)\n Split(right(p, m, sp), v, ss.toTree)\n }\n }\n }\n\n if (index < 0) {\n do raise(IndexOutOfBounds(), "...")\n } else if (index >= seq.size) {\n (seq, Empty())\n } else seq match {\n case Empty() => (Empty(), Empty())\n case Single(v) => (Empty(), seq)\n case Deep(size, p, m, s) =>\n val psize = p.size;\n // It is in the prefix\n if (index < psize) {\n val Split(pp, v, ps) = go(p, index);\n (toSeq(pp), left(Cons(v, ps), m, s))\n } else {\n val msize = psize + m.size\n // It is somewhere in the spine\n if (index < msize) {\n val Split(mp, v, ms) = go(m, index - psize);\n val mpsize = psize + mp.size;\n val Split(vp, w, vs) = go(v.toDigit, index - mpsize);\n (right(p, mp, vp), left(Cons(w, vs), ms, s))\n // It is somewhere in the suffix\n } else {\n val Split(sp, v, ss) = go(s, index - msize);\n (right(p, m, sp), Cons(v, ss).toSeq)\n }\n }\n }\n}\n\n\ndef insert[A](seq: Seq[A], value: A, index: Int): Seq[A] / Exception[IndexOutOfBounds] =\n splitAt(seq, index) match {\n case (prefix, suffix) => prefix.concat(cons(value, suffix))\n }\n\n\n\n// Internal conversions\n// --------------------\n\ndef toTree[A](digit: Digit[Node[A]]): Tree[A] = digit match {\n case One(a) => SingleFinger(a)\n case Two(a, b) => deepFinger(One(a), NoFinger(), One(b))\n case Three(a, b, c) => deepFinger(Two(a, b), NoFinger(), One(c))\n case Four(a, b, c, d) => deepFinger(Three(a, b, c), NoFinger(), One(d))\n}\n\ndef toTree[A](digit: List[Node[A]]): Tree[A] = digit match {\n case Nil() => NoFinger()\n case Cons(a, Nil()) => SingleFinger(a)\n case Cons(a, Cons(b, Nil())) => deepFinger(One(a), NoFinger(), One(b))\n case Cons(a, Cons(b, Cons(c, Nil()))) => deepFinger(Two(a, b), NoFinger(), One(c))\n case Cons(a, Cons(b, Cons(c, Cons(d, Nil())))) => deepFinger(Three(a, b, c), NoFinger(), One(d))\n case _ => <>\n}\n\ndef toSeq[A](d: Digit[A]): Seq[A] = d match {\n case One(a) => Single(a)\n case Two(a, b) => Deep(2, One(a), NoFinger(), One(b))\n case Three(a, b, c) => Deep(3, Two(a, b), NoFinger(), One(c))\n case Four(a, b, c, d) => Deep(4, Three(a, b, c), NoFinger(), One(d))\n}\n\ndef toDigitNode[A](n: Node[A]): Digit[Node[A]] = n match {\n case Node2(_, a, b) => Two(a, b)\n case Node3(_, a, b, c) => Three(a, b, c)\n case _ => <{ "Should not happen" }>\n}\n\ndef toDigitNode[A](n: List[A]): Digit[A] = n match {\n case Cons(a, Nil()) => One(a)\n case Cons(a, Cons(b, Nil())) => Two(a, b)\n case Cons(a, Cons(b, Cons(c, Nil()))) => Three(a, b, c)\n case Cons(a, Cons(b, Cons(c, Cons(d, Nil())))) => Four(a, b, c, d)\n case _ => <{ "Should not happen" }>\n}\n\ndef toDigit[A](n: Node[A]): Digit[A] = n match {\n case Leaf2(a, b) => Two(a, b)\n case Leaf3(a, b, c) => Three(a, b, c)\n case _ => <{ "Should not happen" }>\n}\n\ndef toList[A](digit: Digit[A]): List[A] = digit match {\n case One(a) => Cons(a, Nil())\n case Two(a, b) => Cons(a, Cons(b, Nil()))\n case Three(a, b, c) => Cons(a, Cons(b, Cons(c, Nil())))\n case Four(a, b, c, d) => Cons(a, Cons(b, Cons(c, Cons(d, Nil()))))\n}\n\ndef map[A, B](seq: Seq[A]) { f: A => B }: Seq[B] = {\n var result: Seq[B] = Empty()\n seq.each { a => result = result.consRight(f(a)) }\n result\n}\n\ndef map[A, B](seq: Seq[A]) { f: (A) {Control} => B }: Seq[B] = {\n var result: Seq[B] = Empty()\n seq.each { (a) {label} => result = result.consRight(f(a) {label}) }\n result\n}\n\n\n// TODO iterator interface\n//\n\n// interface Iterator[A] {\n// def value(): Option[A]\n// def next(): Unit\n// }\n\n// interface Generator[A] {\n// def yield(value: A): Unit\n// }\n\n// def iterate[A, R](seq: Seq[A]) { prog: {Iterator[A]} => R }: R = {\n\n// var k: Unit => Unit at {} = fun(unit: Unit) { () }\n// var v: Option[A] = None()\n\n// try { seq.each { el => do yield(el) } } with Generator[A] {\n// def yield(value) = { v = Some(value); k = box resume }\n// }\n\n// new Iterator[A] {\n// def value() = v\n// def next() = (unbox k)(())\n// }\n// }\n\n\n// TODO equality comparison\n//'),zs("common/test.effekt",'import string\nimport process\n\ninterface Assertion {\n def assert(condition: Bool, msg: String): Unit\n}\n\ndef assertTrue(condition: Bool, msg: String) =\n do assert(condition, msg)\n\ndef assertTrue(condition: Bool) =\n do assert(condition, "Assertion failed")\n\ndef assertFalse(condition: Bool, msg: String) =\n do assert(not(condition), msg)\n\ndef assertFalse(condition: Bool) =\n do assert(not(condition), "Assertion failed")\n\ndef assert(obtained: Int, expected: Int, msg: String): Unit / Assertion =\n assertEqual(obtained, expected, msg) { (x, y) => x == y }\n\ndef assert(obtained: Bool, expected: Bool, msg: String): Unit / Assertion =\n assertEqual(obtained, expected, msg) { (x, y) => x == y }\n\ndef assert(obtained: Char, expected: Char, msg: String): Unit / Assertion =\n assertEqual(obtained, expected, msg) { (x, y) => x == y }\n\ndef assert(obtained: String, expected: String, msg: String): Unit / Assertion =\n assertEqual(obtained, expected, msg) { (x, y) => x == y }\n\ndef assert(obtained: Int, expected: Int): Unit / Assertion =\n assertEqual(obtained, expected) { (x, y) => x == y } { x => show(x) }\n\ndef assert(obtained: Bool, expected: Bool): Unit / Assertion =\n assertEqual(obtained, expected) { (x, y) => x == y } { x => show(x) }\n\ndef assert(obtained: Char, expected: Char): Unit / Assertion =\n assertEqual(obtained, expected) { (x, y) => x == y } { x => show(x) }\n\ndef assert(obtained: String, expected: String): Unit / Assertion =\n assertEqual(obtained, expected) { (x, y) => x == y } { x => show(x) }\n\ndef assertEqual[A](obtained: A, expected: A, msg: String): Unit / Assertion =\n assertEqual(obtained, expected, msg) { (x, y) => x.equals(y) }\n\ndef assertEqual[A](obtained: A, expected: A): Unit / Assertion =\n assertEqual(obtained, expected) { (x, y) => x.equals(y) } { x => x.genericShow }\n\ndef assertEqual[A](obtained: A, expected: A, msg: String) { equals: (A, A) => Bool }: Unit / Assertion =\n do assert(equals(obtained, expected), msg)\n\ndef assertEqual[A](obtained: A, expected: A) { equals: (A, A) => Bool } { show: A => String }: Unit / Assertion =\n do assert(equals(obtained, expected), "Obtained: " ++ show(obtained) ++ "\\n but expected:" ++ show(expected))\n\n\ninterface Test {\n def success(name: String): Unit\n def failure(name: String, msg: String): Unit\n}\n\ndef test(name: String) { body: => Unit / Assertion } =\n try { body(); do success(name) } with Assertion {\n def assert(condition, msg) = if (condition) resume(()) else do failure(name, msg)\n }\n\ndef suite(name: String) { body: => Unit / Test }: Bool = {\n println("Running suite: " ++ name);\n var failed = 0\n var passed = 0\n\n try { body() } with Test {\n def success(name) = {\n passed = passed + 1\n println(ANSI::GREEN ++ "+ " ++ name ++ "" ++ ANSI::RESET);\n resume(())\n }\n def failure(name, msg) = {\n failed = failed + 1\n println(ANSI::RED ++ "- (FAIL) " ++ name ++ "\\n " ++ msg ++ ANSI::RESET);\n resume(())\n }\n }\n if (failed > 0) {\n println(ANSI::RED ++ "Some tests failed (" ++ passed.show ++ " passed, " ++ failed.show ++ " failed)" ++ ANSI::RESET)\n false\n } else {\n println(ANSI::GREEN ++ "All tests passed (" ++ passed.show ++ " passed)" ++ ANSI::RESET)\n true\n }\n}\n\n/// Use as `def main() = mainSuite("...") { ... }`\ndef mainSuite(name: String) { body: => Unit / Test }: Unit = {\n val result = suite(name) { body() }\n val exitCode = if (result) 0 else 1\n exit(exitCode)\n}\n'),zs("common/buffer.effekt",'module buffer\n\nimport array\n\n// TODO (in Effekt compiler)\n// - [ ] fix allocating into actually global region\n// - [ ] fix exceptions on objects\n// - [X] allow omitting braces after `at` for singleton regions\n\nrecord BufferOverflow()\n\n/**\n * Fixed-size ring buffers (queues) where one can write\n * elements to the head and read from the tail.\n */\ninterface Buffer[T] {\n /**\n * The remaining capacity\n */\n def capacity(): Int\n\n /**\n * Is this buffer full?\n */\n def full?(): Bool\n\n /**\n * Is this buffer empty?\n */\n def empty?(): Bool\n\n /**\n * Read an element from the tail of the buffer\n */\n def read(): Option[T]\n\n /**\n * Write an element to the head of the buffer\n */\n def write(el: T): Unit / Exception[BufferOverflow]\n}\n\ndef emptyBuffer[T](capacity: Int): Buffer[T] at {global} = {\n if (capacity == 1) refBuffer()\n else arrayBuffer(capacity)\n}\ndef arrayBuffer[T](initialCapacity: Int): Buffer[T] at {global} = {\n // TODO allocate buffer (and array) into a region r.\n val contents = emptyArray[T](initialCapacity)\n var head in global = 0\n var tail in global = 0\n\n def size(): Int =\n if (tail >= head) { tail - head }\n else { initialCapacity - head + tail }\n\n def capacity(): Int = initialCapacity - size()\n\n def buffer = new Buffer[T] {\n def capacity() = capacity()\n def full?() = capacity() <= 0\n def empty?() = size() <= 0\n def read() = {\n if (buffer.empty?) None()\n else {\n val result: T = contents.remove(head).getOrElse { <> };\n head = mod(head + 1, initialCapacity)\n Some(result)\n }\n }\n def write(el: T) = {\n if (buffer.full?) <> // raise(BufferOverflow())\n\n contents.put(tail, el)\n tail = mod(tail + 1, initialCapacity)\n }\n }\n buffer\n}\ndef refBuffer[T](): Buffer[T] at {global} = {\n var content: Option[T] in global = None()\n new Buffer[T] {\n def capacity() = if (content.isEmpty) 1 else 0\n def full?() = content.isDefined\n def empty?() = isEmpty(content)\n def read() = {\n val res = content\n content = None()\n res\n }\n def write(el: T) = content match {\n case Some(v) =>\n <> // do raise(BufferOverflow(), "Cannot read element from buffer")\n case None() =>\n content = Some(el)\n }\n }\n}\n\nnamespace examples {\n def main() = ignore[BufferOverflow] {\n // Buffer with capacity 1\n def b = emptyBuffer[Int](1);\n println(b.capacity);\n println(b.full?);\n\n b.write(17);\n println(b.read());\n\n // buffer with capacity 3\n def ringbuffer = emptyBuffer[Int](3);\n ringbuffer.write(1);\n ringbuffer.write(2);\n println(ringbuffer.read());\n ringbuffer.write(3);\n println(ringbuffer.read());\n println(ringbuffer.read());\n ringbuffer.write(4);\n ringbuffer.write(5);\n println(ringbuffer.read());\n println(ringbuffer.read());\n }\n}'),zs("common/bytes.effekt",'module bytes\n\n/**\n * A memory managed, mutable, fixed-length buffer of bytes.\n */\nextern type Bytes\n // = llvm "%Pos"\n // = js "Uint8Array"\n\n/**\n * Allocates new bytes with the given `capacity`, setting its values to `0`.\n */\nextern io def bytes(capacity: Int): Bytes =\n js "(new Uint8Array(${capacity}))"\n llvm !!!MULTILINEMARKER!!!\n %buf = call %Pos @c_buffer_construct_uninitialized(i64 ${capacity})\n ret %Pos %buf\n !!!MULTILINEMARKER!!!\n\ndef copy(b: Bytes): Bytes = {\n val len = b.size\n val clone = bytes(len)\n copy(b, clone, 0, 0, len)\n clone\n}\n\nextern io def copy(from: Bytes, to: Bytes, startFrom: Int, startTo: Int, length: Int): Unit =\n js "bytes$copy(${from}, ${to}, ${startFrom}, ${startTo}, ${length})"\n llvm !!!MULTILINEMARKER!!!\n call void @c_buffer_copy(%Pos ${from}, %Pos ${to}, i64 ${startFrom}, i64 ${startTo}, i64 ${length})\n ; return Unit\n ret %Pos zeroinitializer\n !!!MULTILINEMARKER!!!\n\nextern pure def size(b: Bytes): Int =\n js "${b}.length"\n llvm !!!MULTILINEMARKER!!!\n %size = call i64 @c_buffer_length(%Pos ${b})\n ret i64 %size\n !!!MULTILINEMARKER!!!\n\nextern io def read(b: Bytes, index: Int): Byte =\n js "(${b})[${index}]"\n llvm !!!MULTILINEMARKER!!!\n %byte = call i8 @c_buffer_index(%Pos ${b}, i64 ${index})\n ret i8 %byte\n !!!MULTILINEMARKER!!!\n\n// TODO should return the number of bytes written.\nextern io def write(b: Bytes, index: Int, value: Byte): Unit =\n js "bytes$set(${b}, ${index}, ${value})"\n llvm !!!MULTILINEMARKER!!!\n call void @c_buffer_set(%Pos ${b}, i64 ${index}, i8 ${value})\n ; return Unit\n ret %Pos zeroinitializer\n !!!MULTILINEMARKER!!!\n\n/**\n * Returns an *aliased* slice of b starting at offset with the given length\n */\ndef slice(b: Bytes, offset: Int, length: Int): Bytes = {\n def validOffset() = offset >= 0 && offset < b.size\n def validLength() = length >= 0 && (offset + length) <= b.size\n if (validOffset() && validLength()) unsafe::slice(b, offset, length)\n else panic("Invalid slice of bytes (size: " ++ b.size.show ++ ", offset: " ++ offset.show ++ ", length: " ++ length.show ++ ")")\n}\n\n\n/**\n * Returns a view into the buffer, with the length truncated to n\n */\ndef truncated(b: Bytes, n: Int): Bytes =\n b.slice(0, n)\n\nextern pure def fromUTF8(s: String): Bytes =\n js "(new TextEncoder().encode(${s}))"\n llvm !!!MULTILINEMARKER!!!\n %copy = call %Pos @c_buffer_clone(%Pos ${s})\n ret %Pos %copy\n !!!MULTILINEMARKER!!!\n\nextern pure def toUTF8(b: Bytes): String =\n js "(new TextDecoder(\'utf-8\').decode(${b}))"\n // assuming the buffer is already in UTF-8\n llvm !!!MULTILINEMARKER!!!\n %copy = call %Pos @c_buffer_clone(%Pos ${b})\n ret %Pos %copy\n !!!MULTILINEMARKER!!!\n\nnamespace unsafe {\n /**\n * Unsafe: offset and length are not checked.\n */\n extern io def slice(b: Bytes, offset: Int, length: Int): Bytes =\n js "new Uint8Array(${b}.buffer, ${offset}, ${length})"\n llvm !!!MULTILINEMARKER!!!\n %buf = call %Pos @c_buffer_slice(%Pos ${b}, i64 ${offset}, i64 ${length})\n ret %Pos %buf\n !!!MULTILINEMARKER!!!\n\n}\n\n\nextern js !!!MULTILINEMARKER!!!\n function bytes$set(bytes, index, value) {\n bytes[index] = value;\n return $effekt.unit;\n }\n\n function bytes$clone(original) {\n let copy = new Uint8Array(original.length);\n copy.set(original);\n return copy;\n }\n\n function bytes$copy(from, to, startFrom, startTo, length) {\n // Check bounds\n if (startFrom + length > from.length || startTo + length > to.length) {\n throw new RangeError(\'Index out of bounds\');\n }\n\n // Create a subarray of \'from\' and set it into \'to\'\n to.set(from.subarray(startFrom, startFrom + length), startTo);\n}\n!!!MULTILINEMARKER!!!\n'),zs("common/array.effekt",'module array\n\nimport effekt\nimport exception\nimport list\n\n/**\n * A mutable 0-indexed fixed-sized array.\n */\nextern type Array[T]\n\n/**\n * Allocates a new array of size `size`, keeping its values _undefined_.\n * Prefer using `array` constructor instead to ensure that values are defined.\n */\nextern global def allocate[T](size: Int): Array[T] =\n js "(new Array(${size}))"\n chez "(make-vector ${size})" // creates an array filled with 0s on CS\n llvm !!!MULTILINEMARKER!!!\n %z = call %Pos @c_array_new(%Int ${size})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\n/**\n * Creates a new Array of size `size` filled with the value `init`\n */\nextern global def array[T](size: Int, init: T): Array[T] =\n ml "Array.array (${size}, ${init})"\n default {\n val arr = allocate[T](size);\n each(0, size) { i =>\n unsafeSet(arr, i, init)\n };\n arr\n }\n\n/**\n * Converts a List `list` to an Array\n */\ndef fromList[T](list: List[T]): Array[T] = {\n val listSize = list.size();\n val arr = allocate(listSize);\n\n foreachIndex(list) { (i, head) =>\n arr.unsafeSet(i, head)\n }\n return arr;\n}\n\n/**\n * Gets the length of the array in constant time.\n */\nextern pure def size[T](arr: Array[T]): Int =\n js "${arr}.length"\n chez "(vector-length ${arr})"\n ml "Array.length ${arr}"\n llvm !!!MULTILINEMARKER!!!\n %z = call %Int @c_array_size(%Pos ${arr})\n ret %Int %z\n !!!MULTILINEMARKER!!!\n\n/**\n * Gets the element of the `arr` at given `index` in constant time.\n * Unchecked Precondition: `index` is in bounds (0 ≤ index < arr.size)\n *\n * Prefer using `get` instead.\n */\nextern global def unsafeGet[T](arr: Array[T], index: Int): T =\n js "${arr}[${index}]"\n chez "(vector-ref ${arr} ${index})"\n ml "Array.sub (${arr}, ${index})"\n llvm !!!MULTILINEMARKER!!!\n %z = call %Pos @c_array_get(%Pos ${arr}, %Int ${index})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\nextern js !!!MULTILINEMARKER!!!\nfunction array$set(arr, index, value) {\n arr[index] = value;\n return $effekt.unit\n}\n!!!MULTILINEMARKER!!!\n\n /**\n * Sets the element of the `arr` at given `index` to `value` in constant time.\n * Unchecked Precondition: `index` is in bounds (0 ≤ index < arr.size)\n *\n * Prefer using `set` instead.\n */\nextern global def unsafeSet[T](arr: Array[T], index: Int, value: T): Unit =\n js "array$set(${arr}, ${index}, ${value})"\n chez "(begin (vector-set! ${arr} ${index} ${value}) #f)"\n ml "Array.update (${arr}, ${index}, ${value})"\n llvm !!!MULTILINEMARKER!!!\n %z = call %Pos @c_array_set(%Pos ${arr}, %Int ${index}, %Pos ${value})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\n/**\n * Creates a copy of `arr`\n */\ndef copy[T](arr: Array[T]): Array[T] = {\n with on[OutOfBounds].default { <> }; // should not happen\n val len = arr.size;\n val newArray = allocate[T](len);\n copy[T](arr, 0, newArray, 0, len);\n newArray\n}\n\n/**\n * Copies `length`-many elements from `from` to `to`\n * starting at `start` (in `from`) and `offset` (in `to`)\n */\ndef copy[T](from: Array[T], start: Int, to: Array[T], offset: Int, length: Int): Unit / Exception[OutOfBounds] = {\n val startValid = start >= 0 && start + length <= from.size\n val offsetValid = offset >= 0 && offset + length <= to.size\n\n def go(i: Int, j: Int, length: Int): Unit =\n if (length > 0) {\n to.unsafeSet(j, from.unsafeGet(i))\n go(i + 1, j + 1, length - 1)\n }\n\n if (startValid && offsetValid) go(start, offset, length)\n else do raise(OutOfBounds(), "Array index out of bounds, when copying")\n}\n\n// Derived operations:\n\n/**\n * Gets the element of the `arr` at given `index` in constant time,\n * throwing an `Exception[OutOfBounds]` unless `0 ≤ index < arr.size`.\n */\ndef get[T](arr: Array[T], index: Int): T / Exception[OutOfBounds] =\n if (index >= 0 && index < arr.size) arr.unsafeGet(index)\n else do raise(OutOfBounds(), "Array index out of bounds: " ++ show(index))\n\n/**\n * Sets the element of the `arr` at given `index` to `value` in constant time,\n * throwing an `Exception[OutOfBounds]` unless `0 ≤ index < arr.size`.\n */\ndef set[T](arr: Array[T], index: Int, value: T): Unit / Exception[OutOfBounds] =\n if (index >= 0 && index < arr.size) unsafeSet(arr, index, value)\n else do raise(OutOfBounds(), "Array index out of bounds: " ++ show(index))\n\n/**\n * Builds a new Array of size `size` from a computation `index` which gets an index\n * and returns a value that will be on that position in the resulting array\n */\ndef build[T](size: Int) { index: Int => T }: Array[T] = {\n val arr = allocate[T](size);\n each(0, size) { i =>\n unsafeSet(arr, i, index(i))\n };\n arr\n}\n\n// Utility functions:\n\ndef toList[T](arr: Array[T]): List[T] = {\n var i = arr.size - 1;\n var l = Nil[T]()\n while (i >= 0) {\n l = Cons(arr.unsafeGet(i), l)\n i = i - 1\n }\n l\n}\n\ndef foreach[T](arr: Array[T]){ action: T => Unit }: Unit =\n each(0, arr.size) { i =>\n val x: T = arr.unsafeGet(i)\n action(x)\n }\n\ndef foreach[T](arr: Array[T]){ action: (T) {Control} => Unit }: Unit =\n each(0, arr.size) { (i) {label} =>\n val x: T = arr.unsafeGet(i)\n action(x) {label}\n }\n\ndef foreachIndex[T](arr: Array[T]){ action: (Int, T) => Unit }: Unit =\n each(0, arr.size) { i =>\n val x: T = arr.unsafeGet(i)\n action(i, x)\n }\n\ndef foreachIndex[T](arr: Array[T]){ action: (Int, T) {Control} => Unit }: Unit =\n each(0, arr.size) { (i) {label} =>\n val x: T = arr.unsafeGet(i)\n action(i, x) {label}\n }\n\ndef sum(list: Array[Int]): Int = {\n var acc = 0\n list.foreach { x =>\n acc = acc + x\n }\n acc\n}\n\n// Show Instances\n// --------------\n\ndef show[A](arr: Array[A]) { showA: A => String }: String = {\n var output = "Array("\n val lastIndex = arr.size - 1\n\n arr.foreachIndex { (index, a) =>\n if (index == lastIndex) output = output ++ showA(a)\n else output = output ++ showA(a) ++ ", "\n }\n output = output ++ ")"\n\n output\n}\ndef show(l: Array[Int]): String = show(l) { e => show(e) }\ndef show(l: Array[Double]): String = show(l) { e => show(e) }\ndef show(l: Array[Bool]): String = show(l) { e => show(e) }\ndef show(l: Array[String]): String = show(l) { e => e }\n\ndef println(l: Array[Int]): Unit = println(show(l))\ndef println(l: Array[Double]): Unit = println(show(l))\ndef println(l: Array[Bool]): Unit = println(show(l))\ndef println(l: Array[String]): Unit = println(show(l))\n'),zs("common/ref.effekt",'module ref\n\nimport effekt\n\nextern js !!!MULTILINEMARKER!!!\nfunction set$impl(ref, value) {\n ref.value = value;\n return $effekt.unit;\n}\n!!!MULTILINEMARKER!!!\n\n/**\n * Global, mutable references\n */\nextern type Ref[T]\n\n/**\n * Allocates a new reference of size `size`, keeping its value _undefined_.\n * Prefer using `ref` constructor instead to ensure that the value is defined.\n */\nextern global def allocate[T](): Ref[T] =\n js "{ value: undefined }"\n chez "(box #f)"\n llvm !!!MULTILINEMARKER!!!\n %z = call %Pos @c_ref_fresh(%Pos zeroinitializer)\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\n/**\n * Creates a new reference with the initial value `init`.\n */\nextern global def ref[T](init: T): Ref[T] =\n js "{ value: ${init} }"\n chez "(box ${init})"\n ml "ref ${init}"\n llvm !!!MULTILINEMARKER!!!\n %z = call %Pos @c_ref_fresh(%Pos ${init})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\n/**\n * Gets the referenced element of the `ref` in constant time.\n */\nextern global def get[T](ref: Ref[T]): T =\n js "${ref}.value"\n chez "(unbox ${ref})"\n ml "!${ref}"\n llvm !!!MULTILINEMARKER!!!\n %z = call %Pos @c_ref_get(%Pos ${ref})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\n/**\n * Sets the referenced element of the `ref` to `value` in constant time.\n */\nextern global def set[T](ref: Ref[T], value: T): Unit =\n js "set$impl(${ref}, ${value})"\n chez "(set-box! ${ref} ${value})"\n ml "${ref} := ${value}"\n llvm !!!MULTILINEMARKER!!!\n %z = call %Pos @c_ref_set(%Pos ${ref}, %Pos ${value})\n ret %Pos %z\n !!!MULTILINEMARKER!!!'),zs("common/list.effekt",'module list\n\nimport effekt\nimport option\nimport exception\n\n// Immutable linked list for finite sequences of elements.\ntype List[A] {\n Nil();\n Cons(head: A, tail: List[A])\n}\n\n// Create an empty list.\n//\n// O(1)\ndef empty[A](): List[A] = Nil()\n\n// Create a list with one element.\n//\n// O(1)\ndef singleton[A](x: A): List[A] = Cons(x, Nil())\n\n// Create a list of length `size` where all elements are `default`.\n//\n// O(size)\ndef fill[A](size: Int, default: A): List[A] = {\n build(size) { i => default }\n}\n\n// Create a list from a function `index` of given `size`.\n//\n// O(size)\ndef build[A](size: Int) { index: Int => A }: List[A] = {\n var result = empty()\n each(0, size) { i =>\n result = Cons(index(i), result)\n }\n result.reverse\n}\n\n// Check if list is empty.\n//\n// O(1)\ndef isEmpty[A](l: List[A]): Bool = l match {\n case Nil() => true\n case Cons(a, rest) => false\n}\n\n// Check if list is nonempty.\n//\n// O(1)\ndef nonEmpty[A](l: List[A]): Bool = l match {\n case Nil() => false\n case Cons(a, rest) => true\n}\n\n// Return the first element of a given list.\n// Throws a `MissingValue` exception if it\'s empty.\n//\n// O(1)\ndef head[A](l: List[A]): A / Exception[MissingValue] = l match {\n case Nil() => do raise(MissingValue(), "Trying to get the head of an empty list")\n case Cons(a, rest) => a\n}\n\n// Return all elements of a given list except the first element.\n// Throws a `MissingValue` exception if it\'s empty.\n//\n// O(1)\ndef tail[A](l: List[A]): List[A] / Exception[MissingValue] = l match {\n case Nil() => do raise(MissingValue(), "Trying to get the head of an empty list")\n case Cons(a, rest) => rest\n}\n\n// Return the first element of a given list.\n// Returns `None()` if it\'s empty.\n//\n// O(1)\ndef headOption[A](l: List[A]): Option[A] = l match {\n case Nil() => None()\n case Cons(a, rest) => Some(a)\n}\n\n// Returns the last element of a given list.\n//\n// O(N)\ndef last[A](l: List[A]): A / Exception[MissingValue] = {\n def go(list: List[A]): A = {\n list match {\n case Nil() => do raise(MissingValue(), "Trying to get the last element of an empty list")\n case Cons(x, Nil()) => x\n case Cons(x, xs) => go(xs)\n }\n }\n\n go(l)\n}\n\n// Get the value at given index.\n//\n// O(N)\ndef get[A](list: List[A], index: Int): A / Exception[OutOfBounds] = {\n def go(list: List[A], i: Int): A = {\n list match {\n case Nil() => do raise(OutOfBounds(), "Trying to get an element outside the bounds of a list")\n case Cons(x, xs) and i == 0 => x\n case Cons(x, xs) => go(xs, i - 1)\n }\n }\n\n go(list, index)\n}\n\n// Traverse a list, applying the given action on every element.\n//\n// O(N)\ndef foreach[A](l: List[A]) { f: (A) => Unit } : Unit = l match {\n case Nil() => ()\n case Cons(head, tail) => f(head); tail.foreach {f}\n}\n\n// Traverse a list, applying the given action on every element.\n//\n// O(N)\ndef foreach[A](l: List[A]) { f: (A) {Control} => Unit } : Unit = {\n var remainder = l\n loop { {label} =>\n remainder match {\n case Nil() => label.break()\n case Cons(head, tail) =>\n remainder = tail\n f(head) {label}\n }\n }\n}\n\n// Traverse a list, applying the given action on every element and its (zero-based) index.\n//\n// O(N)\ndef foreachIndex[A](list: List[A]){ f: (Int, A) => Unit }: Unit = {\n def loop(index: Int, remainder: List[A]): Unit = remainder match {\n case Nil() => ()\n case Cons(head, tail) =>\n f(index, head);\n loop(index + 1, tail)\n }\n loop(0, list)\n}\n\n// Traverse a list, applying the given action on every element and its (zero-based) index.\n//\n// O(N)\ndef foreachIndex[A](list: List[A]){ f: (Int, A) {Control} => Unit }: Unit = {\n var remainder = list\n var i = -1\n loop { {label} =>\n remainder match {\n case Nil() => label.break()\n case Cons(head, tail) =>\n remainder = tail\n i = i + 1\n f(i, head) {label}\n }\n }\n}\n\n// Map a function `f` over elements in a given list.\n//\n// O(N)\ndef map[A, B](l: List[A]) { f: A => B } : List[B] = {\n var acc = Nil[B]()\n l.foreach { el => acc = Cons(f(el), acc) }\n acc.reverse\n}\n\n// Map a function `f` over elements in a given list,\n// keeping only the elements for which the function returned `Some(...)`,\n// discarding the elements for which the function returned `None()`.\n//\n// O(N)\ndef collect[A, B](l: List[A]) { f : A => Option[B] }: List[B] = {\n var acc = Nil[B]()\n l.foreach { a =>\n val optB = f(a)\n optB match {\n case None() => ();\n case Some(b) => acc = Cons(b, acc);\n }\n }\n acc.reverse\n}\n\n// Map a function `f` over elements in a given list and concatenate the results.\n//\n// O(N)\ndef flatMap[A, B](l: List[A]) { f : A => List[B] }: List[B] = {\n var acc = Nil[B]()\n l.foreach { a =>\n val bs = f(a)\n acc = acc.append(bs)\n }\n acc\n}\n\n// Check if predicate is true for all elements of the given list.\n//\n// O(N)\ndef all[A](list: List[A]) { predicate: A => Bool }: Bool = {\n list match {\n case Cons(x, xs) => predicate(x) && all(xs) { predicate }\n case Nil() => true\n }\n}\n\n// Check if predicate is true for at least one element of the given list.\n//\n// O(N)\ndef any[A](list: List[A]) { predicate: A => Bool }: Bool = {\n list match {\n case Cons(x, xs) => predicate(x) || any(xs) { predicate }\n case Nil() => false\n }\n}\n\n// Fold a list using `f`, starting from the left given a starting value.\n//\n// O(N)\ndef foldLeft[A, B](l: List[A], init: B) { f: (B, A) => B }: B = {\n var acc = init;\n l.foreach { x => acc = f(acc, x) };\n acc\n}\n\n// Fold a list using `f`, starting from the right given a starting value.\n//\n// O(N)\ndef foldRight[A, B](l: List[A], init: B) { f: (A, B) => B }: B = {\n var acc = init;\n l.reverse.foreach { x => acc = f(x, acc) };\n acc\n}\n\n// Sum the elements of the list.\n//\n// O(N)\ndef sum(list: List[Int]): Int = {\n var n = 0;\n list.foreach { x => n = n + x };\n n\n}\n\n// Calculate the size of the list.\n//\n// O(N)\ndef size[A](l: List[A]): Int = {\n var n = 0;\n l.foreach { _ => n = n + 1 };\n n\n}\n\n// Reverse the list.\n//\n// O(N)\ndef reverse[A](l: List[A]): List[A] = {\n var res = Nil[A]()\n l.foreach { el => res = Cons(el, res) }\n res\n}\n\n// Reverse a list `l` and append `other` to it.\n//\n// Example:\n// ```\n// > [1,2,3].reverseOnto([4,5,6])\n// [3,2,1,4,5,6]\n// ```\n//\n// O(|l|)\ndef reverseOnto[A](l: List[A], other: List[A]): List[A] = l match {\n case Nil() => other\n case Cons(a, rest) => rest.reverseOnto(Cons(a, other))\n}\n\n// Concatenate list `l` with list `other`:\n//\n// Example:\n// ```\n// > [1,2,3].append([4,5,6])\n// [1,2,3,4,5,6]\n// ```\n//\n// O(N)\ndef append[A](l: List[A], other: List[A]): List[A] =\n l.reverse.reverseOnto(other)\n\n// Flatten a list of lists into a single list.\n//\n// Examples:\n// ```\n// > [[1, 2, 3], [4, 5], [6]].join()\n// [1, 2, 3, 4, 5, 6]\n//\n// > [[]].join()\n// []\n// ```\n//\n// O(N)\ndef join[A](lists: List[List[A]]): List[A] = {\n var acc: List[A] = Nil()\n lists.foreach { list =>\n acc = acc.append(list)\n }\n acc\n}\n\n// Flatten a list of lists into a single list,\n// putting the `between` list in between each list in the input.\n//\n// Examples:\n// ```\n// > [[100], [200, 300], [400]].join([1, 2, 3])\n// [100, 1, 2, 3, 200, 300, 1, 2, 3, 400]\n//\n// > [[]].join([1, 2, 3])\n// []\n// ```\n//\n// O(N)\ndef join[A](lists: List[List[A]], between: List[A]): List[A] = {\n lists match {\n case Nil() => Nil()\n case Cons(firstList, restOfLists) =>\n firstList.append(\n restOfLists.flatMap { list => between.append(list)}\n )\n }\n}\n\n// Take the first `n` elements of a given list.\n//\n// Examples:\n// ```\n// > [1, 2, 3].take(2)\n// [1, 2]\n//\n// > [1, 2, 3].take(0)\n// []\n//\n// > [1, 2, 3].take(3)\n// [1, 2, 3]\n//\n// > [1, 2, 3].take(5)\n// [1, 2, 3]\n//\n// > [1, 2, 3].take(-1)\n// []\n// ```\n//\n// O(n)\ndef take[A](l: List[A], n: Int): List[A] =\n if (n <= 0) {\n Nil()\n } else l match {\n case Nil() => Nil()\n case Cons(a, rest) => Cons(a, rest.take(n - 1))\n }\n\n// Drop the first `n` elements of a given list.\n//\n// Examples:\n// ```\n// > [1, 2, 3].drop(2)\n// [3]\n//\n// > [1, 2, 3].drop(0)\n// [1, 2, 3]\n//\n// > [1, 2, 3].drop(3)\n// []\n//\n// > [1, 2, 3].drop(5)\n// []\n//\n// > [1, 2, 3].drop(-1)\n// [1, 2, 3]\n// ```\n//\n// O(n)\ndef drop[A](l: List[A], n: Int): List[A] =\n if (n <= 0) {\n l\n } else l match {\n case Nil() => Nil()\n case Cons(a, rest) => rest.drop(n - 1)\n }\n\n// Return a slice of a given list from the starting index (inclusive)\n// to the given end index (exclusive).\n//\n// Examples:\n// ```\n// > [1, 2, 3, 4, 5, 6].slice(1, 4)\n// [2, 3, 4]\n//\n// > [1, 2, 3, 4, 5, 6].slice(1, 2)\n// [2]\n//\n// > [1, 2, 3, 4, 5, 6].slice(1, 1)\n// []\n//\n// > [1, 2, 3, 4, 5, 6].slice(4, 1)\n// []\n//\n// > [1, 2, 3, 4, 5, 6].slice(-100, 100)\n// [1, 2, 3, 4, 5, 6]\n// ```\n//\n// O(N)\ndef slice[A](list: List[A], start: Int, stopExclusive: Int): List[A] = {\n val prefix = list.drop(start)\n val length = stopExclusive - start\n prefix.take(length)\n}\n\n// Split the list at given index.\n//\n// Law: `val (l, r) = list.splitAt(i); l.append(r) === list`\n//\n// O(N)\ndef splitAt[A](list: List[A], index: Int): (List[A], List[A]) = {\n (list.take(index), list.drop(index))\n}\n\n// Update the element at given index in the list using the `update` function.\n// Returns the original list if the index is out of bounds.\n//\n// See: `modifyAt`\n// Examples:\n// ```\n// > [1, 2, 3].updateAt(1) { n => n + 100 }\n// [1, 102, 3]\n//\n// > [1, 2, 3].updateAt(10) { n => n + 100 }\n// [1, 2, 3]\n// ```\n//\n// O(N)\ndef updateAt[A](list: List[A], index: Int) { update: A => A }: List[A] = {\n list.splitAt(index) match {\n case (left, Cons(x, right)) =>\n left.append(Cons(update(x), right))\n case _ => list\n }\n}\n\n// Modify the element at given index in the list using the `update` function.\n// Throws `OutOfBounds` if the index is out of bounds.\n//\n// See: `updateAt`\n// Examples:\n// ```\n// > [1, 2, 3].modifyAt(1) { n => n + 100 }\n// Some([1, 102, 3])\n//\n// > [1, 2, 3].modifyAt(10) { n => n + 100 }\n// None()\n// ```\n//\n// O(N)\ndef modifyAt[A](list: List[A], index: Int) { update: A => A }: List[A] / Exception[OutOfBounds] = {\n list.splitAt(index) match {\n case (left, Cons(x, right)) =>\n left.append(Cons(update(x), right))\n case _ => do raise(OutOfBounds(), "Trying to modify an element outside the bounds of a list")\n }\n}\n\n// Delete the element at given index in the list.\n//\n// Example:\n// ```\n// > [1, 2, 3, 4].deleteAt(1)\n// [1, 3, 4]\n//\n// > [1, 2, 3, 4].deleteAt(-1)\n// [1, 2, 3, 4]\n//\n// > [1, 2, 3, 4].deleteAt(10)\n// [1, 2, 3, 4]\n// ```\n//\n// O(N)\ndef deleteAt[A](list: List[A], index: Int): List[A] = {\n val left = list.slice(0, index)\n val right = list.slice(index + 1, list.size())\n left.append(right)\n}\n\n// Add an element at given index in the list.\n//\n// Examples:\n// ```\n// > [1, 2, 3].insert(-1, 0)\n// [0, 1, 2, 3]\n//\n// > [1, 2, 3].insert(0, 0)\n// [0, 1, 2, 3]\n//\n// > [1, 2, 3].insert(1, 0)\n// [1, 0, 2, 3]\n//\n// > [1, 2, 3].insert(3, 0)\n// [1, 2, 3, 0]\n//\n// > [1, 2, 3].insert(10, 0)\n// [1, 2, 3, 0]\n// ```\n//\n// O(N)\ndef insert[A](list: List[A], index: Int, x: A): List[A] = {\n val (left, right) = list.splitAt(index)\n left.append(Cons(x, right))\n}\n\n// Replace an element at given index in the list.\n// Returns the original list when the index is out of bounds.\n//\n// Examples:\n// ```\n// > [1, 2, 3].replace(0, 42)\n// [42, 2, 3]\n//\n// > [1, 2, 3].replace(-1, 42)\n// [1, 2, 3]\n//\n// > [1, 2, 3].replace(10, 42)\n// [1, 2, 3]\n// ```\n//\n// O(N)\ndef replace[A](list: List[A], index: Int, x: A): List[A] = {\n if (index < 0 || index >= list.size()) {\n list\n } else {\n val left = list.take(index)\n val right = list.drop(index + 1)\n left.append(Cons(x, right))\n }\n}\n\n// Produce a list of pairs from a pair of lists.\n// The length of the result is the minimum of lengths of the two lists.\n//\n// Examples:\n// ```\n// > zip([1, 2, 3], [100, 200, 300])\n// [(1, 100), (2, 200), (3, 300)]\n//\n// > zip([1, 2, 3], Nil[Int]())\n// []\n//\n// > zip(Nil[Int](), [1, 2, 3])\n// []\n//\n// > zip([1, 2, 3], [42])\n// [(1, 42)]\n// ```\n//\n// O(N)\ndef zip[A, B](left: List[A], right: List[B]): List[(A, B)] = {\n def go(acc: List[(A, B)], left: List[A], right: List[B]): List[(A, B)] = {\n (left, right) match {\n case (Cons(a, as), Cons(b, bs)) =>\n val pair = (a, b)\n val newAcc = Cons(pair, acc)\n go(newAcc, as, bs)\n case _ => acc.reverse\n }\n }\n go(Nil(), left, right)\n}\n\n// Combine two lists with the given function.\n// The length of the result is the minimum of lengths of the two lists.\n//\n// Examples:\n// ```\n// > zipWith([1, 2, 3], [100, 200, 300]) { (a, b) => a + b }\n// [101, 202, 303]\n//\n// > zipWith([1, 2, 3], Nil[Int]()) { (a, b) => a + b }\n// []\n//\n// > zipWith(Nil[Int](), [1, 2, 3]) { (a, b) => a + b }\n// []\n//\n// > zipWith([1, 2, 3], [42]) { (a, b) => a + b }\n// [43]\n// ```\n//\n// O(N)\ndef zipWith[A, B, C](left: List[A], right: List[B]) { combine : (A, B) => C }: List[C] = {\n def go(acc: List[C], left: List[A], right: List[B]): List[C] = {\n (left, right) match {\n case (Cons(a, as), Cons(b, bs)) =>\n val result = combine(a, b)\n val newAcc = Cons(result, acc)\n go(newAcc, as, bs)\n case _ => acc.reverse\n }\n }\n go(Nil(), left, right)\n}\n\n// Produce a pair of lists from a list of pairs.\n//\n// Examples:\n// ```\n// > [(1, 100), (2, 200), (3, 300)].unzip()\n// ([1, 2, 3], [100, 200, 300])\n// ```\n//\n// O(N)\ndef unzip[A, B](pairs: List[(A, B)]): (List[A], List[B]) = {\n pairs match {\n case Nil() => (Nil(), Nil())\n case Cons((l, r), rest) =>\n val (left, right) = rest.unzip();\n (Cons(l, left), Cons(r, right))\n }\n}\n\n// Partition a given list into two lists.\n// The left list contains the elements that satsify the predicate,\n// the right list contains the elements that do not.\n//\n// O(N)\ndef partition[A](l: List[A]) { pred: A => Bool }: (List[A], List[A]) = {\n var lefts: List[A] = Nil()\n var rights: List[A] = Nil()\n l.foreach { el =>\n if (pred(el)) {\n lefts = Cons(el, lefts)\n } else {\n rights = Cons(el, rights)\n }\n }\n\n (lefts.reverse, rights.reverse)\n}\n\n// Sort a list using a given comparison function.\n//\n// Note: this implementation is not stacksafe!\n//\n// O(N log N)\ndef sortBy[A](l: List[A]) { compare: (A, A) => Bool }: List[A] =\n l match {\n case Nil() => Nil()\n case Cons(pivot, rest) =>\n val (lt, gt) = rest.partition { el => compare(el, pivot) };\n val leftSorted = sortBy(lt) { (a, b) => compare(a, b) }\n val rightSorted = sortBy(gt) { (a, b) => compare(a, b) }\n leftSorted.append(Cons(pivot, rightSorted))\n }\n\ndef sort(l: List[Int]): List[Int] = l.sortBy { (a, b) => a < b }\ndef sort(l: List[Double]): List[Double] = l.sortBy { (a, b) => a < b }\n\n// Check if a list is sorted according to the given comparison function.\n//\n// O(N)\ndef isSortedBy[A](list: List[A]) { compare: (A, A) => Bool }: Bool = {\n def go(list: List[A]): Bool = {\n list match {\n case Nil() => true\n case Cons(x, Nil()) => true\n case Cons(x, Cons(y, rest)) =>\n val next = Cons(y, rest) // Future work: Replace this by an @-pattern!\n compare(x, y) && go(next)\n }\n }\n go(list)\n}\n\n\n// Show Instances\n// --------------\n\ndef show[A](l: List[A]) { showA: A => String }: String = {\n def go(l: List[A]): String = l match {\n case Nil() => "Nil()"\n case Cons(x, xs) => "Cons(" ++ showA(x) ++ ", " ++ go(xs) ++ ")"\n }\n go(l)\n}\ndef show(l: List[Int]): String = show(l) { e => show(e) }\ndef show(l: List[Double]): String = show(l) { e => show(e) }\ndef show(l: List[Bool]): String = show(l) { e => show(e) }\ndef show(l: List[String]): String = show(l) { e => e }\n\ndef println(l: List[Int]): Unit = println(show(l))\ndef println(l: List[Double]): Unit = println(show(l))\ndef println(l: List[Bool]): Unit = println(show(l))\ndef println(l: List[String]): Unit = println(show(l))\n'),zs("common/effekt.effekt",'module effekt\n\nnamespace js {\n // Runtime\n extern include js "../js/effekt_runtime.js"\n\n // Builtins\n extern include js "../js/effekt_builtins.js"\n}\n\nnamespace chez {\n\n // All Chez Scheme backends\n // ------------------------\n extern include chez "../chez/common/effekt_primitives.ss"\n\n // call/cc based implementation\n // ----------------------------\n extern include chezCallCC "../chez/callcc/seq0.ss"\n extern include chezCallCC "../chez/callcc/tail0.ss"\n extern include chezCallCC "../chez/callcc/effekt.ss"\n\n // CPS implementation\n // ------------------\n extern include chezLift "../chez/lift/effekt.ss"\n\n // Monadic implementation\n // ----------------------\n extern include chezMonadic "../chez/monadic/seq0.ss"\n extern include chezMonadic "../chez/monadic/effekt.ss"\n}\n\nnamespace ml {\n extern include ml "../ml/effekt.sml"\n}\n\nnamespace llvm {\n extern include llvm "../llvm/rts.ll"\n extern include llvm "../llvm/forward-declare-c.ll"\n}\n\n// Showing and debugging\n// =====================\n\nextern def println(value: String): Unit =\n js "$effekt.println(${value})"\n chez "(println_impl ${value})"\n llvm !!!MULTILINEMARKER!!!\n call void @c_io_println_String(%Pos ${value})\n ret %Pos zeroinitializer ; Unit\n !!!MULTILINEMARKER!!!\n ml { print(value); print("\\n") }\n\nextern io def print(value: String): Unit =\n ml "print ${value}"\n\ndef println(value: Int): Unit = println(value.show)\ndef println(value: Unit): Unit = println(value.show)\ndef println(value: Double): Unit = println(value.show)\ndef println(value: Bool): Unit = println(value.show)\ndef println(value: Byte): Unit = println(value.show)\n\nextern pure def show(value: Int): String =\n js "\'\' + ${value}"\n chez "(show-number ${value})"\n ml "show\'int ${value}"\n llvm !!!MULTILINEMARKER!!!\n %z = call %Pos @c_buffer_show_Int(%Int ${value})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\ndef show(value: Unit): String = "()"\n\nextern pure def show(value: Double): String =\n js "\'\' + ${value}"\n chez "(show-number ${value})"\n ml "show\'real ${value}"\n llvm !!!MULTILINEMARKER!!!\n %z = call %Pos @c_buffer_show_Double(%Double ${value})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\ndef show(value: String): String =\n value\n\ndef show(value: Bool): String =\n if (value) "true" else "false"\n\nextern pure def show(value: Char): String =\n js "String.fromCodePoint(${value})"\n chez "(string (integer->char ${value}))"\n ml "str (chr ${value})"\n llvm !!!MULTILINEMARKER!!!\n %z = call %Pos @c_buffer_show_Char(%Int ${value})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\nextern pure def show(value: Byte): String =\n llvm !!!MULTILINEMARKER!!!\n %z = call %Pos @c_buffer_show_Byte(i8 ${value})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\nextern pure def genericShow[R](value: R): String =\n js "$effekt.show(${value})"\n chez "(show_impl ${value})"\n\nextern io def inspect[R](value: R): Unit =\n js { println(genericShow(value)) }\n chez { println(genericShow(value)) }\n\n\n// Strings\n// =======\nextern pure def infixConcat(s1: String, s2: String): String =\n js "((${s1}) + (${s2}))"\n chez "(string-append ${s1} ${s2})"\n ml "${s1} ^ ${s2}"\n llvm !!!MULTILINEMARKER!!!\n %spz = call %Pos @c_buffer_concatenate(%Pos ${s1}, %Pos ${s2})\n ret %Pos %spz\n !!!MULTILINEMARKER!!!\n\nextern pure def length(str: String): Int =\n js "${str}.length"\n chez "(string-length ${str})"\n ml "String.size ${str}"\n llvm !!!MULTILINEMARKER!!!\n %x = call %Int @c_buffer_length(%Pos ${str})\n call void @erasePositive(%Pos ${str})\n ret %Int %x\n !!!MULTILINEMARKER!!!\n\nextern pure def unsafeSubstring(str: String, from: Int, to: Int): String =\n js "${str}.substring(${from}, ${to})"\n chez "(substring ${str} ${from} ${to})" // potentially raises: "Exception in substring: ..."\n ml "String.extract (${str}, ${from}, SOME (${to} - ${from}))"\n llvm !!!MULTILINEMARKER!!!\n %x = call %Pos @c_buffer_substring(%Pos ${str}, i64 ${from}, i64 ${to})\n ret %Pos %x\n !!!MULTILINEMARKER!!!\n\n\n// Side effecting ops\n// ==================\n\nextern io def random(): Double =\n js "Math.random()"\n chez "(random 1.0)"\n ml "mlRandomReal ()"\n\n// References and state\n// ====================\n// the following type is defined in builtins.scala\n// interface Ref[T] { def get(): T; def put(t: T): Unit }\n// extern io def freshIn[T](t: T) {r: Region}: Ref[T] at {r} = js "r.fresh(${t})"\n// extern io def freshGlobal[T](t: T): Ref[T] at {global} = js "$effekt.fresh(${t})"\n\n\n// Equality\n// ========\n/**\n * Result of comparison between two objects according to some order:\n *\n * - `Less()` means that the first object is *before* the first in the order,\n * - `Equal()` means that the two objects are the same in the order,\n * - and `Greater()` means that the second object is *before* the first in the order.\n */\ntype Ordering {\n Less();\n Equal();\n Greater()\n}\n\nextern pure def genericCompareImpl[R](x: R, y: R): Int =\n js "$effekt.compare(${x}, ${y})"\n\n // Compares two values of the same type, returning an `Ordering`.\ndef genericCompare[R](x: R, y: R): Ordering = {\n genericCompareImpl(x, y) match {\n case -1 => Less()\n case 0 => Equal()\n case 1 => Greater()\n case _ => <{ "Impossible: JS comparison returned invalid value!" }>\n }\n}\n\ndef show(o: Ordering): String = o match {\n case Less() => "Less()"\n case Equal() => "Equal()"\n case Greater() => "Greater()"\n}\n\ndef println(o: Ordering): Unit = println(o.show)\n\n\n// Comparison ops\n// ==============\n\n/**\n * Structural equality: Not available in the LLVM backend\n */\nextern pure def equals[R](x: R, y: R): Bool =\n js "$effekt.equals(${x}, ${y})"\n chez "(equal? ${x} ${y})"\n ml "${x} = ${y}"\n\ndef differsFrom[R](x: R, y: R): Bool =\n not(equals(x, y))\n\n// TODO fix this in the pattern matching compiler\nextern pure def infixEq(x: Unit, y: Unit): Bool =\n js "true"\n chez "#t"\n ml "true"\n\nextern pure def infixEq(x: Int, y: Int): Bool =\n js "${x} === ${y}"\n chez "(equal? ${x} ${y})"\n ml "${x} = ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = icmp eq %Int ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixNeq(x: Int, y: Int): Bool =\n js "${x} !== ${y}"\n chez "(not (equal? ${x} ${y}))"\n ml "${x} <> ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = icmp ne %Int ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixEq(x: Char, y: Char): Bool =\n js "${x} === ${y}"\n chez "(equal? ${x} ${y})"\n ml "${x} = ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = icmp eq %Int ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixNeq(x: Char, y: Char): Bool =\n js "${x} !== ${y}"\n chez "(not (equal? ${x} ${y}))"\n ml "${x} <> ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = icmp ne %Int ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixEq(x: String, y: String): Bool =\n js "${x} === ${y}"\n chez "(equal? ${x} ${y})"\n ml "${x} = ${y}"\n llvm !!!MULTILINEMARKER!!!\n %res = call %Pos @c_buffer_eq(%Pos ${x}, %Pos ${y})\n ret %Pos %res\n !!!MULTILINEMARKER!!!\n\ndef infixNeq(x: String, y: String): Bool = not(x == y)\n\nextern pure def infixEq(x: Bool, y: Bool): Bool =\n js "${x} === ${y}"\n chez "(equal? ${x} ${y})"\n ml "${x} = ${y}"\n llvm !!!MULTILINEMARKER!!!\n %slim_x = extractvalue %Pos ${x}, 0\n %slim_y = extractvalue %Pos ${y}, 0\n %slim_z = icmp eq i64 %slim_x, %slim_y\n %fat_z = zext i1 %slim_z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixNeq(x: Bool, y: Bool): Bool =\n js "${x} !== ${y}"\n chez "(not (equal? ${x} ${y}))"\n ml "${x} <> ${y}"\n llvm !!!MULTILINEMARKER!!!\n %slim_x = extractvalue %Pos ${x}, 0\n %slim_y = extractvalue %Pos ${y}, 0\n %slim_z = icmp ne i64 %slim_x, %slim_y\n %fat_z = zext i1 %slim_z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\n\n// Math ops\n// ========\nextern pure def infixAdd(x: Int, y: Int): Int =\n js "(${x} + ${y})"\n chez "(+ ${x} ${y})"\n ml "(${x}: int) + ${y}"\n llvm "%z = add %Int ${x}, ${y} ret %Int %z"\n\nextern pure def infixMul(x: Int, y: Int): Int =\n js "(${x} * ${y})"\n chez "(* ${x} ${y})"\n ml "(${x}: int) * ${y}"\n llvm "%z = mul %Int ${x}, ${y} ret %Int %z"\n\nextern pure def infixDiv(x: Int, y: Int): Int =\n js "Math.floor(${x} / ${y})"\n chez "(floor (/ ${x} ${y}))"\n ml "(${x}: int) div ${y}"\n llvm "%z = sdiv %Int ${x}, ${y} ret %Int %z"\n\nextern pure def infixSub(x: Int, y: Int): Int =\n js "(${x} - ${y})"\n chez "(- ${x} ${y})"\n ml "(${x}: int) - ${y}"\n llvm "%z = sub %Int ${x}, ${y} ret %Int %z"\n\nextern pure def mod(x: Int, y: Int): Int =\n js "(${x} % ${y})"\n chez "(modulo ${x} ${y})"\n ml "(${x}: int) mod ${y}"\n llvm "%z = srem %Int ${x}, ${y} ret %Int %z"\n\nextern pure def infixAdd(x: Double, y: Double): Double =\n js "(${x} + ${y})"\n chez "(+ ${x} ${y})"\n ml "(${x}: real) + ${y}"\n llvm "%z = fadd %Double ${x}, ${y} ret %Double %z"\n\nextern pure def infixMul(x: Double, y: Double): Double =\n js "(${x} * ${y})"\n chez "(* ${x} ${y})"\n ml "(${x}: real) * ${y}"\n llvm "%z = fmul %Double ${x}, ${y} ret %Double %z"\n\nextern pure def infixSub(x: Double, y: Double): Double =\n js "(${x} - ${y})"\n chez "(- ${x} ${y})"\n ml "(${x}: real) - ${y}"\n llvm "%z = fsub %Double ${x}, ${y} ret %Double %z"\n\nextern pure def infixDiv(x: Double, y: Double): Double =\n js "(${x} / ${y})"\n chez "(/ ${x} ${y})"\n ml "(${x}: real) / ${y}"\n llvm "%z = fdiv %Double ${x}, ${y} ret %Double %z"\n\nextern pure def cos(x: Double): Double =\n js "Math.cos(${x})"\n chez "(cos ${x})"\n ml "Math.cos ${x}"\n\nextern pure def sin(x: Double): Double =\n js "Math.sin(${x})"\n chez "(sin ${x})"\n ml "Math.sin ${x}"\n\nextern pure def atan(x: Double): Double =\n js "Math.atan(${x})"\n chez "(atan ${x})"\n ml "Math.atan ${x}"\n\nextern pure def tan(x: Double): Double =\n js "Math.tan(${x})"\n chez "(tan ${x})"\n ml "Math.tan ${x}"\n\nextern pure def sqrt(x: Double): Double =\n js "Math.sqrt(${x})"\n chez "(sqrt ${x})"\n ml "Math.sqrt ${x}"\n llvm "%z = call %Double @llvm.sqrt.f64(double ${x}) ret %Double %z"\n\ndef square(x: Double): Double = x * x\n\ndef neg(n: Double): Double =\n 0.0 - n\n\ndef max(n: Double, m: Double): Double =\n if (n > m) n else m\n\ndef abs(n: Double): Double =\n max(n, neg(n))\n\nextern pure def log(x: Double): Double =\n js "Math.log(${x})"\n chez "(log ${x})"\n ml "Math.ln ${x}"\n\nextern pure def log1p(x: Double): Double =\n js "Math.log1p(${x})"\n chez "(log (+ ${x} 1))"\n ml "Math.ln (${x} + 1.0)"\n\nextern pure def exp(x: Double): Double =\n js "Math.exp(${x})"\n chez "(exp ${x})"\n ml "Math.exp ${x}"\n\ndef pow(base: Double, exponent: Int): Double = {\n def loop(base: Double, exponent: Int, acc: Double): Double = {\n if (exponent == 0) acc\n else if (exponent.mod(2) == 0) loop(base * base, exponent / 2, acc) // even exponent\n else loop(base, exponent - 1, acc * base) // odd exponent\n }\n loop(base, exponent, 1.0)\n}\n\nextern pure def pow(base: Double, exponent: Double): Double =\n js "Math.pow(${base}, ${exponent})"\n chez "(expt ${base} ${exponent})"\n ml "Math.pow ${base} ${exponent}"\n\n// since we do not have "extern val", yet\nextern pure def _pi(): Double =\n js "Math.PI"\n chez "(* 4 (atan 1))"\n ml "Math.pi"\n\nval PI: Double = _pi()\n\nextern pure def toInt(d: Double): Int =\n js "Math.trunc(${d})"\n chez "(flonum->fixnum ${d})"\n ml "Real.trunc ${d}"\n llvm "%z = fptosi double ${d} to %Int ret %Int %z"\n\nextern pure def toDouble(d: Int): Double =\n js "${d}"\n chez "${d}"\n ml "Real.fromInt ${d}"\n llvm "%z = sitofp i64 ${d} to double ret double %z"\n\nextern pure def round(d: Double): Int =\n js "Math.round(${d})"\n chez "(round ${d})"\n ml "Real.round ${d}"\n llvm !!!MULTILINEMARKER!!!\n %i = call %Double @llvm.round.f64(double ${d})\n %z = fptosi double %i to %Int ret %Int %z\n !!!MULTILINEMARKER!!!\n\ndef round(d: Double, digits: Int): Double = {\n val factor = pow(10.0, digits)\n round(d * factor).toDouble / factor\n}\n\nextern pure def floor(d: Double): Int =\n js "Math.floor(${d})"\n chez "(flonum->fixnum (floor ${d}))"\n ml "Real.floor ${d}"\n llvm !!!MULTILINEMARKER!!!\n %i = call %Double @llvm.floor.f64(double ${d})\n %z = fptosi double %i to %Int ret %Int %z\n !!!MULTILINEMARKER!!!\n\nextern pure def ceil(d: Double): Int =\n js "Math.ceil(${d})"\n chez "(flonum->fixnum (ceiling ${d}))"\n ml "Real.ceil ${d}"\n llvm !!!MULTILINEMARKER!!!\n %i = call %Double @llvm.ceil.f64(double ${d})\n %z = fptosi double %i to %Int ret %Int %z\n !!!MULTILINEMARKER!!!\n\ndef min(n: Int, m: Int): Int =\n if (n < m) n else m\n\ndef max(n: Int, m: Int): Int =\n if (n > m) n else m\n\ndef neg(n: Int): Int =\n 0 - n\n\ndef abs(n: Int): Int =\n max(n, neg(n))\n\n\nextern pure def infixLt(x: Int, y: Int): Bool =\n js "(${x} < ${y})"\n chez "(< ${x} ${y})"\n ml "(${x}: int) < ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = icmp slt %Int ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixLte(x: Int, y: Int): Bool =\n js "(${x} <= ${y})"\n chez "(<= ${x} ${y})"\n ml "(${x}: int) <= ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = icmp sle %Int ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixGt(x: Int, y: Int): Bool =\n js "(${x} > ${y})"\n chez "(> ${x} ${y})"\n ml "(${x}: int) > ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = icmp sgt %Int ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixGte(x: Int, y: Int): Bool =\n js "(${x} >= ${y})"\n chez "(>= ${x} ${y})"\n ml "(${x}: int) >= ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = icmp sge %Int ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixEq(x: Double, y: Double): Bool =\n js "${x} === ${y}"\n chez "(= ${x} ${y})"\n ml "(${x}: real) = ${y}"\n\nextern pure def infixNeq(x: Double, y: Double): Bool =\n js "${x} !== ${y}"\n chez "(not (= ${x} ${y}))"\n ml "(${x}: real) <> ${y}"\n\nextern pure def infixLt(x: Double, y: Double): Bool =\n js "(${x} < ${y})"\n chez "(< ${x} ${y})"\n ml "(${x}: real) < ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = fcmp olt %Double ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixLte(x: Double, y: Double): Bool =\n js "(${x} <= ${y})"\n chez "(<= ${x} ${y})"\n ml "(${x}: real) <= ${y}"\n\nextern pure def infixGt(x: Double, y: Double): Bool =\n js "(${x} > ${y})"\n chez "(> ${x} ${y})"\n ml "(${x}: real) > ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z = fcmp ogt %Double ${x}, ${y}\n %fat_z = zext i1 %z to i64\n %adt_boolean = insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixGte(x: Double, y: Double): Bool =\n js "(${x} >= ${y})"\n chez "(>= ${x} ${y})"\n ml "(${x}: real) >= ${y}"\n\n// TODO do we really need those? if yes, move to string.effekt\nextern pure def infixLt(x: String, y: String): Bool =\n js "(${x} < ${y})"\n chez "(< ${x} ${y})"\n ml "(${x}: string) < ${y}"\n\nextern pure def infixLte(x: String, y: String): Bool =\n js "(${x} <= ${y})"\n chez "(<= ${x} ${y})"\n ml "(${x}: string) <= ${y}"\n\nextern pure def infixGt(x: String, y: String): Bool =\n js "(${x} > ${y})"\n chez "(> ${x} ${y})"\n ml "(${x}: string) > ${y}"\n\nextern pure def infixGte(x: String, y: String): Bool =\n js "(${x} >= ${y})"\n chez "(>= ${x} ${y})"\n ml "(${x}: string) >= ${y}"\n\n\n// Boolean operations\n// ==================\nextern pure def not(b: Bool): Bool =\n js "!${b}"\n chez "(not ${b})"\n ml "not ${b}"\n llvm !!!MULTILINEMARKER!!!\n %p = extractvalue %Pos ${b}, 0\n %q = xor i64 1, %p\n %adt_q = insertvalue %Pos zeroinitializer, i64 %q, 0\n ret %Pos %adt_q\n !!!MULTILINEMARKER!!!\n\ndef infixOr { first: => Bool } { second: => Bool }: Bool =\n if (first()) true else second()\n\ndef infixAnd { first: => Bool } { second: => Bool }: Bool =\n if (first()) second() else false\n\n\n// Bitwise operations\n// ==================\nextern pure def bitwiseShl(x: Int, y: Int): Int =\n js "(${x} << ${y})"\n chez "(ash ${x} ${y})"\n llvm "%z = shl %Int ${x}, ${y} ret %Int %z"\n\nextern pure def bitwiseAnd(x: Int, y: Int): Int =\n js "(${x} & ${y})"\n chez "(logand ${x} ${y})"\n llvm "%z = and %Int ${x}, ${y} ret %Int %z"\n\nextern pure def bitwiseXor(x: Int, y: Int): Int =\n js "(${x} ^ ${y})"\n chez "(logxor ${x} ${y})"\n llvm "%z = xor %Int ${x}, ${y} ret %Int %z"\n\n\n// Byte operations\n// ===============\nextern pure def toByte(n: Int): Byte =\n js "${n}"\n llvm "%z = trunc %Int ${n} to %Byte ret %Byte %z"\n\nextern pure def toInt(n: Byte): Int =\n js "${n}"\n llvm "%z = zext %Byte ${n} to %Int ret %Int %z"\n\n\n// Undefined and Null\n// ==================\n// Should only be used for interop with FFI, since values in Effekt\n// should not be undefined.\n//\n// js: undefined || null\n// chez: #f\n// ml: NONE (of option \'a)\n// llvm: null?\n\n/**\n * The value used by the FFI to represent undefined values\n */\nextern pure def undefined[A](): A =\n js "undefined"\n chez "#f"\n ml "NONE"\n\n/**\n * Is an FFI value undefined?\n */\nextern pure def isUndefined[A](value: A): Bool =\n js "(${value} === undefined || ${value} === null)"\n chez "(eq? ${value} #f)"\n ml "Option.isSome ${value}"\n\n\n// Tuples\n// ======\nrecord Tuple2[A, B](first: A, second: B)\nrecord Tuple3[A, B, C](first: A, second: B, third: C)\nrecord Tuple4[A, B, C, D](first: A, second: B, third: C, fourth: D)\nrecord Tuple5[A, B, C, D, E](first: A, second: B, third: C, fourth: D, fifth: E)\nrecord Tuple6[A, B, C, D, E, F](first: A, second: B, third: C, fourth: D, fifth: E, sixth: F)\n\n\n// Control Flow\n// ============\ninterface Control {\n def break(): Unit\n def continue(): Unit\n}\n\ndef loop { f: () => Unit }: Unit = {\n def go(): Unit = { f(); go() }\n go()\n}\n\ndef loop { f: {Control} => Unit }: Unit = try {\n def go(): Unit = { f {label}; go() }\n go()\n} with label: Control {\n def break() = ()\n def continue() = loop { f }\n}\n\n/**\n * Calls provided action repeatedly. `start` is inclusive, `end` is not.\n */\ndef each(start: Int, end: Int) { action: (Int) => Unit } = {\n def loop(i: Int): Unit =\n if (i < end) { action(i); loop(i + 1) }\n\n loop(start)\n}\n\n/**\n * Calls provided action repeatedly with support for breaking. `start` is inclusive, `end` is not.\n */\ndef each(start: Int, end: Int) { action: (Int) {Control} => Unit } = {\n var i = start;\n loop { {l} =>\n if (i < end) { val el = i; i = i + 1; action(el){l} }\n else { l.break() }\n }\n}\n\ndef repeat(n: Int) { action: () => Unit } = each(0, n) { n => action() }\n\ndef repeat(n: Int) { action: () {Control} => Unit } = each(0, n) { (n) {l} => action() {l} }\n\nnamespace internal {\n namespace boxing {\n // For boxing polymorphic values\n extern type BoxedUnit\n extern pure def boxUnit(u: Unit): Unit =\n extern pure def unboxUnit(u: Unit): Unit =\n\n extern type BoxedInt\n extern pure def boxInt(n: Int): BoxedInt =\n llvm !!!MULTILINEMARKER!!!\n %boxed1 = insertvalue %Pos zeroinitializer, i64 ${n}, 0\n %boxed2 = insertvalue %Pos %boxed1, %Object null, 1\n ret %Pos %boxed2\n !!!MULTILINEMARKER!!!\n extern pure def unboxInt(b: BoxedInt): Int =\n llvm !!!MULTILINEMARKER!!!\n %unboxed = extractvalue %Pos ${b}, 0\n ret %Int %unboxed\n !!!MULTILINEMARKER!!!\n\n extern type BoxedByte\n extern pure def boxByte(n: Byte): BoxedByte =\n llvm !!!MULTILINEMARKER!!!\n %extended = sext i8 ${n} to i64\n %boxed1 = insertvalue %Pos zeroinitializer, i64 %extended, 0\n %boxed2 = insertvalue %Pos %boxed1, %Object null, 1\n ret %Pos %boxed2\n !!!MULTILINEMARKER!!!\n extern pure def unboxByte(b: BoxedByte): Byte =\n llvm !!!MULTILINEMARKER!!!\n %unboxed = extractvalue %Pos ${b}, 0\n %truncated = trunc i64 %unboxed to i8\n ret i8 %truncated\n !!!MULTILINEMARKER!!!\n\n extern type BoxedChar\n extern pure def boxChar(c: Char): BoxedChar =\n llvm !!!MULTILINEMARKER!!!\n %boxed1 = insertvalue %Pos zeroinitializer, i64 ${c}, 0\n %boxed2 = insertvalue %Pos %boxed1, %Object null, 1\n ret %Pos %boxed2\n !!!MULTILINEMARKER!!!\n extern pure def unboxChar(b: BoxedChar): Char =\n llvm !!!MULTILINEMARKER!!!\n %unboxed = extractvalue %Pos ${b}, 0\n ret %Int %unboxed\n !!!MULTILINEMARKER!!!\n\n extern type BoxedBool\n extern pure def boxBool(b: Bool): BoxedBool =\n extern pure def unboxBool(b: BoxedBool): Bool =\n\n extern type BoxedDouble\n extern pure def boxDouble(d: Double): BoxedDouble =\n llvm !!!MULTILINEMARKER!!!\n %n = bitcast double ${d} to i64\n %boxed1 = insertvalue %Pos zeroinitializer, i64 %n, 0\n %boxed2 = insertvalue %Pos %boxed1, %Object null, 1\n ret %Pos %boxed2\n !!!MULTILINEMARKER!!!\n extern pure def unboxDouble(b: BoxedDouble): Double =\n llvm !!!MULTILINEMARKER!!!\n %unboxed = extractvalue %Pos ${b}, 0\n %d = bitcast i64 %unboxed to double\n ret %Double %d\n !!!MULTILINEMARKER!!!\n }\n}\n'),zs("common/dequeue.effekt",'module dequeue\n\n\n// An implementation of a functional dequeue, using Okasaki\'s\n// bankers dequeue implementation.\n//\n// Translation from the Haskell implementation:\n// https://hackage.haskell.org/package/dequeue-0.1.12/docs/src/Data-Dequeue.html#Dequeue\nrecord Dequeue[R](front: List[R], frontSize: Int, rear: List[R], rearSize: Int)\n\ndef emptyQueue[R](): Dequeue[R] = Dequeue(Nil(), 0, Nil(), 0)\n\ndef isEmpty[R](dq: Dequeue[R]): Bool = dq match {\n case Dequeue(f, fs, r, rs) => (fs == 0) && (rs == 0)\n}\n\ndef size[R](dq: Dequeue[R]): Int = dq match {\n case Dequeue(f, fs, r, rs) => fs + rs\n}\n\ndef first[R](dq: Dequeue[R]): Option[R] = dq match {\n case Dequeue(f, fs, r, rs) =>\n if ((fs == 0) && (rs == 1)) { r.headOption }\n else { f.headOption }\n}\n\ndef last[R](dq: Dequeue[R]): Option[R] = dq match {\n case Dequeue(f, fs, r, rs) =>\n if ((fs == 1) && (rs == 0)) { f.headOption }\n else { r.headOption }\n}\n\ndef check[R](dq: Dequeue[R]): Dequeue[R] = dq match {\n case Dequeue(f, fs, r, rs) =>\n val c = 4;\n val size1 = (fs + rs) / 2;\n val size2 = (fs + rs) - size1;\n\n if (fs > c * rs + 1) {\n val front = f.take(size1);\n val rear = r.append(f.drop(size1).reverse);\n Dequeue(front, size1, rear, size2)\n } else if (rs > c * fs + 1) {\n val front = f.append(r.drop(size1).reverse);\n val rear = r.take(size1);\n Dequeue(front, size2, rear, size1)\n } else {\n dq\n }\n}\n\ndef pushFront[R](dq: Dequeue[R], el: R): Dequeue[R] = dq match {\n case Dequeue(f, fs, r, rs) => Dequeue(Cons(el, f), fs + 1, r, rs).check\n}\n\ndef popFront[R](dq: Dequeue[R]): Option[(R, Dequeue[R])] = dq match {\n case Dequeue(Nil(), fs, Cons(x, Nil()), rs) =>\n Some((x, emptyQueue()))\n case Dequeue(Nil(), fs, r, rs) =>\n None()\n case Dequeue(Cons(x, rest), fs, r, rs) =>\n Some((x, Dequeue(rest, fs - 1, r, rs).check))\n}\n\ndef pushBack[R](dq: Dequeue[R], el: R): Dequeue[R] = dq match {\n case Dequeue(f, fs, r, rs) => Dequeue(f, fs, Cons(el, r), rs + 1).check\n}\n\ndef popBack[R](dq: Dequeue[R]): Option[(R, Dequeue[R])] = dq match {\n case Dequeue(Cons(x, Nil()), fs, Nil(), rs) =>\n Some((x, emptyQueue()))\n case Dequeue(f, fs, Nil(), rs) =>\n None()\n case Dequeue(f, fs, Cons(x, rest), rs) =>\n Some((x, Dequeue(f, fs, rest, rs - 1).check))\n}\n\n\ndef show[A](d: Dequeue[A]) { showA: A => String }: String = {\n val Dequeue(front, frontSize, rear, rearSize) = d;\n "Dequeue(" ++ show(front){showA} ++ ", " ++ show(frontSize) ++ ", " ++\n show(rear){showA} ++ ", " ++ show(rearSize) ++ ")"\n}\ndef show(l: Dequeue[Int]): String = show(l) { e => show(e) }\ndef show(l: Dequeue[Double]): String = show(l) { e => show(e) }\ndef show(l: Dequeue[Bool]): String = show(l) { e => show(e) }\ndef show(l: Dequeue[String]): String = show(l) { e => e }\n\ndef println(l: Dequeue[Int]): Unit = println(show(l))\ndef println(l: Dequeue[Double]): Unit = println(show(l))\ndef println(l: Dequeue[Bool]): Unit = println(show(l))\ndef println(l: Dequeue[String]): Unit = println(show(l))\n'),zs("common/args.effekt",'module args\n\nextern io def commandLineArgs(): List[String] =\n js { js::commandLineArgs() }\n chez { chez::commandLineArgs() }\n ml { ml::commandLineArgs() }\n llvm { llvm::commandLineArgs() }\n\nnamespace js {\n extern type Args // = Array[String]\n\n extern io def nativeArgs(): Args = js "process.argv.slice(1)"\n\n extern io def argCount(args: Args): Int = js "${args}.length"\n\n extern io def argument(args: Args, i: Int): String = js "${args}[${i}]"\n\n def commandLineArgs(): List[String] = {\n def toList(args: Args, start: Int, acc: List[String]): List[String] =\n if (start < 1) { acc }\n else args.toList(start - 1, Cons(args.argument(start), acc))\n\n val args = nativeArgs()\n args.toList(args.argCount - 1, Nil())\n }\n}\n\nnamespace chez {\n extern type Args // = CSList[String]\n\n extern io def nativeArgs(): Args =\n chez "(cdr (command-line))"\n\n extern pure def isEmpty(l: Args): Bool =\n chez "(null? ${l})"\n\n extern pure def head(l: Args): String =\n chez "(car ${l})"\n\n extern pure def tail(l: Args): Args =\n chez "(cdr ${l})"\n\n def toList(l: Args): List[String] =\n if (l.isEmpty) Nil() else Cons(l.head, l.tail.toList)\n\n def commandLineArgs(): List[String] = nativeArgs().toList\n}\n\nnamespace ml {\n\n // MLList[String]\n // we inline these from mllist to not have a dependency\n extern type Args\n\n extern io def nativeArgs(): Args =\n ml "CommandLine.arguments ()"\n\n extern pure def isEmpty(args: Args): Bool =\n ml "null ${args}"\n\n extern io def first(a: Args): String =\n ml "hd ${a}"\n\n extern io def rest(a: Args): Args =\n ml "tl ${a}"\n\n\n def commandLineArgs(): List[String] = {\n def toList(args: Args): List[String] =\n if (args.isEmpty) Nil() else Cons(args.first, args.rest.toList)\n nativeArgs().toList\n }\n}\n\nnamespace llvm {\n extern io def argCount(): Int =\n llvm !!!MULTILINEMARKER!!!\n %c = call %Int @c_get_argc()\n ret %Int %c\n !!!MULTILINEMARKER!!!\n\n extern io def argument(i: Int): String =\n llvm !!!MULTILINEMARKER!!!\n %s = call %Pos @c_get_arg(%Int ${i})\n ret %Pos %s\n !!!MULTILINEMARKER!!!\n\n def commandLineArgs(): List[String] = {\n def toList(start: Int, acc: List[String]): List[String] =\n if (start < 1) { acc }\n else toList(start - 1, Cons(argument(start), acc))\n\n toList(argCount() - 1, Nil())\n }\n}\n'),zs("common/exception.effekt",'module exception\n\nimport effekt\n\n// Exceptions\n// ==========\n\ninterface Exception[E] {\n def raise(exception: E, msg: String): Nothing\n}\n\ndef raise[A, E](exception: E, msg: String): A / Exception[E] =\n do raise(exception, msg) match {}\n\n/**\n * Used as a type for `Exception` in functions which expect a non-empty\n * container (e.g. option or list).\n */\nrecord MissingValue()\n\ndef missingValue(): Nothing / Exception[MissingValue] =\n do raise(MissingValue(), "Missing value.")\n\n/**\n * Used as a type for `Exception` in functions where an index can be out of bounds.\n */\nrecord OutOfBounds()\n\n/**\n * Unexpected runtime exceptions that can be caught.\n */\nrecord RuntimeError()\n\ndef raise[A](msg: String): A / Exception[RuntimeError] =\n do raise(RuntimeError(), msg) match {}\n\n/**\n * Used as a type for `Exception` in functions which expect the input\n * to be formatted in a specific way.\n */\nrecord WrongFormat()\n\ndef wrongFormat(): Nothing / Exception[WrongFormat] =\n do raise(WrongFormat(), "Wrong format.")\n\ndef wrongFormat(msg: String): Nothing / Exception[WrongFormat] =\n do raise(WrongFormat(), msg)\n\n\n/**\n * A fatal runtime error that cannot be caught\n */\nextern io def panic[R](msg: String): R =\n js "(function() { throw ${msg} })()"\n chez "(raise ${msg})"\n ml "raise Fail ${msg}"\n llvm !!!MULTILINEMARKER!!!\n call void @c_io_println_String(%Pos ${msg})\n call void @exit(i32 1)\n ret %Pos zeroinitializer ; Unit\n !!!MULTILINEMARKER!!!\n\n\n// Exception Handlers\n// ==================\n\n\n/**\n * Converts exceptions of (static) type E to an uncatchable panic that aborts the program\n */\ndef panicOn[E, T] { prog: => T / Exception[E] }: T =\n try { prog() } with Exception[E] { def raise(exception: E, msg: String) = panic(msg) }\n\n/**\n * Reports exceptions of (static) type E to the console\n */\ndef report[E] { prog: => Unit / Exception[E] }: Unit =\n try { prog() } with Exception[E] { def raise(exception: E, msg: String) = println(msg) }\n\n/**\n * Ignores exceptions of (static) type E\n */\ndef ignore[E] { prog: => Unit / Exception[E] }: Unit =\n try { prog() } with Exception[E] { def raise(exception: E, msg: String) = () }\n\n/**\n * Use the default value to handle the exception of type E\n */\ndef default[E, T] { default: => T } { prog: => T / Exception[E] }: T =\n try { prog() } with Exception[E] { def raise(exception: E, msg: String) = default() }\n\n/**\n * Runs the finalizer and rethrows E\n */\ndef finalize[E, T] { finalizer: => Unit } { prog: => T / Exception[E] }: T / Exception[E] =\n try { val res = prog(); finalizer(); res } with Exception[E] {\n def raise(exception: E, msg: String) = { finalizer(); do raise(exception, msg) }\n }\n\n/**\n * A proxy value to enable partial type applications, such as:\n *\n * ```\n * with on[MissingValue].ignore; ...\n * ```\n */\nrecord on[E]()\n\ndef ignore[E](proxy: on[E]) { prog: => Unit / Exception[E] }: Unit =\n ignore[E] {prog}\n\ndef default[E, T](proxy: on[E]) { d: => T } { prog: => T / Exception[E] }: T =\n default[E, T] {d} {prog}\n\ndef panic[E, T](proxy: on[E]) { prog: => T / Exception[E] }: T =\n panicOn[E, T] {prog}\n\ndef report[E](proxy: on[E]) { prog: => Unit / Exception[E] }: Unit =\n report[E] {prog}\n\ndef finalize[E, T](proxy: on[E]) { finalizer: => Unit } { prog: => T / Exception[E] }: T / Exception[E] =\n finalize[E, T] {finalizer} {prog}'),zs("common/option.effekt",'module option\n\nimport effekt\nimport exception\n\ntype Option[A] {\n None();\n Some(value: A)\n}\n\ndef isDefined[A](self: Option[A]): Bool = self match {\n case None() => false\n case Some(v) => true\n}\n\ndef isEmpty[A](self: Option[A]): Bool =\n self.isDefined.not\n\ndef orElse[A](self: Option[A]) { that: => Option[A] }: Option[A] = self match {\n case None() => that()\n case Some(v) => Some(v)\n}\n\ndef getOrElse[A](self: Option[A]) { that: => A }: A = self match {\n case None() => that()\n case Some(v) => v\n}\n\ndef map[A, B](self: Option[A]) { f: A => B }: Option[B] = self match {\n case None() => None()\n case Some(v) => Some(f(v))\n}\n\ndef foreach[A](self: Option[A]) { f: A => Unit }: Unit = self match {\n case None() => ()\n case Some(v) => f(v)\n}\n\ndef value[A](self: Option[A]): A / Exception[MissingValue] = self match {\n case None() => do raise(MissingValue(), "Trying to get the value of an empty option")\n case Some(v) => v\n}\n\ndef option[A] { p: => A / Exception[MissingValue] }: Option[A] =\n try { Some(p()) }\n with Exception[MissingValue] { def raise(_, _) = None() }\n\ndef option[A, E](proxy: on[E]) { p: => A / Exception[E] }: Option[A] =\n try { Some(p()) }\n with Exception[E] { def raise(_, _) = None() }\n\n// Interop with FFI\n// ---------------\n// These functions should only be used by libraries that interface with FFI\ndef undefinedToOption[A](value: A): Option[A] =\n if (value.isUndefined) { None() } else { Some(value) }\n\n\n// Show Instances\n// --------------\n\ndef show[A](o: Option[A]) { showA: A => String }: String = o match {\n case None() => "None()"\n case Some(v) => "Some(" ++ showA(v) ++ ")"\n}\ndef show(o: Option[Int]): String = show(o) { e => show(e) }\ndef show(o: Option[Double]): String = show(o) { e => show(e) }\ndef show(o: Option[Bool]): String = show(o) { e => show(e) }\n\ndef println(o: Option[Int]): Unit = println(show(o))\ndef println(o: Option[Double]): Unit = println(show(o))\ndef println(o: Option[Bool]): Unit = println(show(o))\n'),zs("common/bench.effekt",'module bench\n\n/**\n * The current time (since UNIX Epoch) in nanoseconds.\n *\n * The actual precision varies across the different backends.\n * - js: Milliseconds\n * - chez: Microseconds\n * - ml: Microseconds\n */\nextern io def timestamp(): Int =\n js "Date.now() * 1000000"\n chez "(timestamp)"\n ml "IntInf.toInt (Time.toNanoseconds (Time.now ()))"\n llvm !!!MULTILINEMARKER!!!\n %time_ptr = alloca { i64, i64 }\n call i32 @clock_gettime(i32 0, ptr %time_ptr)\n %time = load {i64, i64}, ptr %time_ptr\n %time_seconds = extractvalue {i64, i64} %time, 0\n %time_nanoseconds = extractvalue {i64, i64} %time, 1\n %time_seconds_nanoseconds = mul nsw i64 %time_seconds, 1000000000\n %result = add nsw i64 %time_seconds_nanoseconds, %time_nanoseconds\n ret %Int %result\n !!!MULTILINEMARKER!!!\n\nextern llvm !!!MULTILINEMARKER!!!\n declare i32 @clock_gettime(i32, ptr)\n!!!MULTILINEMARKER!!!\n\n/**\n * High-precision timestamp in nanoseconds that should be for measurements.\n *\n * This timestamp should only be used for **relative** measurements,\n * as gives no guarantees on the absolute time (unlike a UNIX timestamp).\n */\nextern io def relativeTimestamp(): Int =\n js "Math.round(performance.now() * 1000000)"\n default { timestamp() }\n\n/**\n * Runs the block and returns the time in nanoseconds\n */\ndef timed { block: => Unit }: Int = {\n val before = relativeTimestamp()\n block()\n val after = relativeTimestamp()\n after - before\n}\n\ndef measure(warmup: Int, iterations: Int) { block: => Unit }: Unit = {\n def run(n: Int, report: Bool): Unit = {\n if (n <= 0) { () } else {\n val time = timed { block() };\n if (report) { println(time) } else { () };\n run(n - 1, report)\n }\n }\n run(warmup, false)\n run(iterations, true)\n}\n'),zs("common/process.effekt",'module process\n\nextern io def exit(errorCode: Int): Nothing =\n js "(function() { process.exit(${errorCode}) })()"\n llvm !!!MULTILINEMARKER!!!\n call void @exit(i64 ${errorCode})\n ret %Pos zeroinitializer\n !!!MULTILINEMARKER!!!\n chez "(exit ${errorCode})"\n ml "(Posix.Process.exit (Word8.fromInt ${errorCode}))"\n'),zs("common/io.effekt",'module io\n\nimport ref\nimport queue\n\n// Event Loop\n// ----------\n\ntype Task[T] = () => T at {io, async, global}\n\nextern llvm !!!MULTILINEMARKER!!!\n declare void @c_yield(%Stack)\n!!!MULTILINEMARKER!!!\n\nextern async def spawn(task: Task[Unit]): Unit =\n js "$effekt.callcc(callback => { setTimeout(() => callback($effekt.unit), 0); ${task}().run()})"\n llvm !!!MULTILINEMARKER!!!\n call void @c_yield(%Stack %stack)\n call void @run(%Neg ${task})\n ret void\n !!!MULTILINEMARKER!!!\n\nextern async def yield(): Unit =\n js "$effekt.callcc(callback => setTimeout(() => callback($effekt.unit), 0))"\n llvm !!!MULTILINEMARKER!!!\n call void @c_yield(%Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\nextern async def abort(): Nothing =\n js "$effekt.callcc(callback => { return })"\n llvm !!!MULTILINEMARKER!!!\n call void @eraseStack(%Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\n\n// Promises\n// --------\n\nextern type Promise[T]\n // = js "{resolve: ƒ, promise: Promise}"\n // = llvm "{tag: 0, obj: Promise*}"\n\ndef promise[T](task: Task[T]): Promise[T] = {\n val p = promise::make[T]();\n spawn(box { p.resolve(task()) });\n return p\n}\n\nextern llvm !!!MULTILINEMARKER!!!\n declare %Pos @c_promise_make()\n declare void @c_promise_resolve(%Pos, %Pos)\n declare void @c_promise_await(%Pos, %Neg)\n!!!MULTILINEMARKER!!!\n\nextern async def await[T](promise: Promise[T]): T =\n js "$effekt.callcc(callback => ${promise}.promise.then(res => callback(res)))"\n llvm !!!MULTILINEMARKER!!!\n call void @c_promise_await(%Pos ${promise}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\nextern async def resolve[T](promise: Promise[T], value: T): Unit =\n js "$effekt.callcc(callback => { ${promise}.resolve(${value}); callback($effekt.unit)})"\n llvm !!!MULTILINEMARKER!!!\n call void @c_promise_resolve(%Pos ${promise}, %Pos ${value}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\nnamespace promise {\n extern js !!!MULTILINEMARKER!!!\n function promise$make() {\n let resolve;\n const promise = new Promise((res, rej) => {\n resolve = res;\n });\n return { resolve: resolve, promise: promise };\n }\n !!!MULTILINEMARKER!!!\n\n extern io def make[T](): Promise[T] =\n js "promise$make()"\n llvm !!!MULTILINEMARKER!!!\n %promise = call %Pos @c_promise_make()\n ret %Pos %promise\n !!!MULTILINEMARKER!!!\n}\n'),zs("common/queue.effekt","module queue\n\nimport array\n\n/**\n * Mutable, automatically resizing queue.\n */\ninterface Queue[T] {\n def empty?(): Bool\n\n def popFront(): Option[T]\n\n def popBack(): Option[T]\n\n def peekFront(): Option[T]\n\n def peekBack(): Option[T]\n\n def pushFront(el: T): Unit\n\n def pushBack(el: T): Unit\n}\n\n\ndef emptyQueue[T](): Queue[T] at {global} =\n emptyQueue[T](64)\n\ndef emptyQueue[T](initialCapacity: Int): Queue[T] at {global} = {\n\n var contents in global = array[Option[T]](initialCapacity, None())\n var head in global = 0\n var tail in global = 0\n var size in global = 0\n var capacity in global = initialCapacity\n\n def remove(arr: Array[Option[T]], index: Int): Option[T] = {\n with on[OutOfBounds].default { None() };\n val value = arr.get(index);\n arr.set(index, None());\n value\n }\n\n def nonEmpty[T] { p: => Option[T] / Exception[OutOfBounds] }: Option[T] =\n if (size <= 0) None() else on[OutOfBounds].default { None() } { p() }\n\n // Exponential back-off\n def resizeTo(requiredSize: Int): Unit =\n if (requiredSize <= capacity) () else {\n with on[OutOfBounds].ignore // should not happen\n\n val oldSize = capacity\n val newSize = capacity * 2\n val oldContents = contents\n val newContents = array::allocate[Option[T]](newSize)\n\n if (head < tail) {\n // The queue does not wrap around; direct copy is possible.\n copy(oldContents, head, newContents, 0, size) // changed tail to size\n } else if (size > 0) {\n // The queue wraps around; copy in two segments.\n copy(oldContents, head, newContents, 0, oldSize - head) // changed oldSize to oldSize - head\n copy(oldContents, 0, newContents, oldSize - head, tail) // changed oldSize - head to oldSize - head\n }\n\n contents = newContents\n capacity = newSize\n head = 0\n tail = oldSize\n }\n\n def queue = new Queue[T] {\n def empty?() = size <= 0\n\n def popFront() =\n nonEmpty {\n val result = contents.remove(head)\n head = mod(head + 1, capacity)\n size = size - 1\n result\n }\n\n def popBack() =\n nonEmpty {\n tail = mod(tail - 1 + capacity, capacity)\n val result = contents.remove(tail)\n size = size - 1\n result\n }\n\n def peekFront() = nonEmpty { contents.get(head) }\n\n def peekBack() = nonEmpty { contents.get(tail) }\n\n def pushFront(el: T) = {\n resizeTo(size + 1);\n head = mod(head - 1 + capacity, capacity);\n size = size + 1;\n contents.unsafeSet(head, Some(el))\n }\n\n def pushBack(el: T) = {\n resizeTo(size + 1);\n contents.unsafeSet(tail, Some(el));\n size = size + 1;\n tail = mod(tail + 1, capacity)\n }\n }\n queue\n}\n\nnamespace examples {\n def main() = {\n // queue with initial capacity 4\n def b = emptyQueue[Int](4);\n println(b.empty?);\n b.pushFront(1);\n b.pushBack(2);\n b.pushFront(3);\n b.pushBack(4);\n // this will cause resizing:\n b.pushBack(5);\n b.pushBack(6);\n b.pushBack(7);\n b.pushBack(8);\n // and again:\n b.pushBack(9);\n\n println(b.empty?);\n println(b.popFront()); // Some(3)\n println(b.popFront()); // Some(1)\n println(b.popFront()); // Some(2)\n println(b.popFront()); // Some(4)\n println(b.popFront()); // Some(5)\n println(b.popFront()); // Some(6)\n println(b.popFront()); // Some(7)\n println(b.popFront()); // Some(8)\n println(b.popFront()); // Some(9)\n println(b.popFront()); // None()\n }\n}\n"),zs("common/result.effekt",'module result\n\nimport effekt\nimport option\nimport exception\n\n/**\n * Represents the result of a potentially failing computation.\n * It is the "reification" of the Exception[E] effect.\n */\ntype Result[A, E] {\n Error(exception: E, msg: String);\n Success(a: A)\n}\n\n/**\n * Represent ("reify") the result of a potentially failing computation.\n 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b1(this.I,this.Tc,this.yc,this.Uc,this.zc,this.Hc,this.Ac,this.xc,this.Bc,this.qc,this.Tb,this.bc,this.ac,this.$b,t,e,1+this.N|0)}if(31>this.$b.a.length){t=yh(Eh(),this.$b,yh(Eh(),this.Zb,this.L)),e=Eh().Ob;var r=new j(1);return r.a[0]=n,new b1(this.I,this.Tc,this.yc,this.Uc,this.zc,this.Hc,this.Ac,this.xc,this.Bc,this.qc,this.Tb,this.bc,this.ac,t,e,r,1+this.N|0)}if(31>this.ac.a.length){t=yh(Eh(),this.ac,yh(Eh(),this.$b,yh(Eh(),this.Zb,this.L))),e=Eh().Dd,r=Eh().Ob;var i=new j(1);return i.a[0]=n,new b1(this.I,this.Tc,this.yc,this.Uc,this.zc,this.Hc,this.Ac,this.xc,this.Bc,this.qc,this.Tb,this.bc,t,e,r,i,1+this.N|0)}if(31>this.bc.a.length){t=yh(Eh(),this.bc,yh(Eh(),this.ac,yh(Eh(),this.$b,yh(Eh(),this.Zb,this.L)))),e=Eh().Hg,r=Eh().Dd,i=Eh().Ob;var o=new j(1);return o.a[0]=n,new 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else if (n1 \x3e n2) { return 1; }\n else { return -1; }\n}\n\n$effekt.compare \x3d function(obj1, obj2) {\n if ($effekt.equals(obj1, obj2)) { return 0; }\n\n if (!!obj1 \x26\x26 !!obj2) {\n if (!!obj1.__reflect \x26\x26 !!obj2.__reflect) {\n const tagOrdering \x3d compare$prim(obj1.__tag, obj2.__tag)\n if (tagOrdering !\x3d 0) { return tagOrdering; }\n\n const meta1 \x3d obj1.__reflect().__data\n const meta2 \x3d obj2.__reflect().__data\n\n const lengthOrdering \x3d compare$prim(meta1.length, meta2.length)\n if (lengthOrdering !\x3d 0) { return lengthOrdering; }\n\n for (let i \x3d 0; i \x3c meta1.length; i++) {\n const contentOrdering \x3d $effekt.compare(meta1[i], meta2[i])\n if (contentOrdering !\x3d 0) { return contentOrdering; }\n }\n\n return 0;\n }\n }\n\n return compare$prim(obj1, obj2);\n}\n\n$effekt.println \x3d function println$impl(str) {\n console.log(str); return $effekt.unit;\n}\n\n$effekt.unit \x3d { __unit: true }'); Gv("js/effekt_runtime.js",'const $runtime \x3d 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function(init) { return Cell(init) },\n backup: function() {},\n restore: function(_) {}\n }\n\n // Lists / Pairs\n function Cons(head, tail) {\n return { head: head, tail: tail }\n }\n const Nil \x3d null\n\n // reverseOnto[A, B, C](init: Frames[A, B], tail: Stack[B, C]): Stack[A, C]\n function reverseOnto(init, tail) {\n let rest \x3d init;\n let result \x3d tail;\n while (rest !\x3d\x3d Nil) {\n result \x3d Cons(rest.head, result)\n rest \x3d rest.tail\n }\n return result\n }\n\n let _prompt \x3d 2;\n\n // Monadic Style Runtime\n // ---------------------\n\n const toplevel \x3d 1;\n\n // Result -- Trampoline\n function Step(c, k) {\n return { isStep: true, c: c, k: k }\n }\n function trampoline(r) {\n var res \x3d r\n while (res !\x3d\x3d null \x26\x26 res !\x3d\x3d undefined \x26\x26 res.isStep) {\n res \x3d res.c.apply(res.k)\n }\n return res\n }\n\n // Frame \x3d A \x3d\x3e Control[B]\n\n // Metacontinuations / Stacks\n // (frames: List\x3cFrame\x3e, fields: [Cell], prompt: Int, tail: Stack) -\x3e Stack\n function Stack(frames, arena, prompt, tail) {\n return { frames: frames, arena: arena, prompt: prompt, tail: tail }\n }\n function SubStack(frames, arena, backup, prompt, tail) {\n return { frames: frames, arena: arena, backup: backup, prompt: prompt, tail: tail }\n }\n const EmptyStack \x3d null;\n\n // (stack: Stack\x3cA, B\x3e, a: A) -\x3e Step\x3cB\x3e\n function apply(stack, a) {\n var s \x3d stack;\n while (true) {\n if (s \x3d\x3d\x3d EmptyStack) return a;\n const fs \x3d s.frames;\n if (fs \x3d\x3d\x3d Nil) { s \x3d s.tail; continue }\n const result \x3d fs.head(a);\n s.frames \x3d fs.tail;\n return Step(result, s)\n }\n }\n\n // (subcont: Stack, stack: Stack) -\x3e Stack\n function pushSubcont(subcont, stack) {\n var sub \x3d subcont;\n var s \x3d stack;\n\n while (sub !\x3d\x3d EmptyStack) {\n s \x3d Stack(sub.frames, sub.arena.restore(sub.backup), sub.prompt, s)\n sub \x3d sub.tail\n }\n return s;\n }\n\n function flatMap(stack, f) {\n if (stack \x3d\x3d\x3d EmptyStack) { return Stack(Cons(f, Nil), Arena(), null, stack) }\n var fs \x3d stack.frames\n // it should be safe to mutate the frames field, since they are copied in the subcont\n stack.frames \x3d Cons(f, fs)\n return stack\n }\n\n function splitAt(stack, p) {\n var sub \x3d EmptyStack;\n var s \x3d stack;\n\n while (s !\x3d\x3d EmptyStack) {\n const currentPrompt \x3d s.prompt;\n sub \x3d SubStack(s.frames, s.arena, s.arena.backup(), currentPrompt, sub);\n s \x3d s.tail;\n if (currentPrompt \x3d\x3d\x3d p) { return Cons(sub, s) }\n }\n throw ("Prompt " + p + " not found")\n }\n\n function allocateInto(stack, p, cell) {\n var s \x3d stack;\n\n while (s !\x3d\x3d EmptyStack) {\n const currentPrompt \x3d s.prompt\n if (currentPrompt \x3d\x3d\x3d p) {\n return s.fields.push(cell);\n } else {\n s \x3d s.tail\n }\n }\n throw ("Prompt " + p + " not found")\n }\n\n function withState(init, f) {\n return Control(k \x3d\x3e {\n const cell \x3d k.arena.fresh(init)\n return Step(f(cell), k)\n })\n }\n\n function withRegion(prog) {\n return Control(k \x3d\x3e {\n return Step(prog(k.arena), k)\n })\n }\n\n function withStateIn(prompt, init, f) {\n const cell \x3d Cell(init)\n\n if (prompt \x3d\x3d\x3d toplevel) {\n return f(cell)\n } else {\n return Control(k \x3d\x3e {\n allocateInto(k, prompt, cell);\n return Step(f(cell), k)\n })\n }\n }\n\n // Delimited Control\n function Control(apply) {\n const self \x3d {\n apply: apply,\n run: () \x3d\x3e trampoline(Step(self, Stack(Nil, global, toplevel, EmptyStack))),\n then: f \x3d\x3e Control(k \x3d\x3e Step(self, flatMap(k, f))),\n state: f \x3d\x3e self.then(init \x3d\x3e withState(init, f))\n }\n return self\n }\n\n const pure \x3d a \x3d\x3e Control(k \x3d\x3e apply(k, a))\n\n const delayed \x3d a \x3d\x3e Control(k \x3d\x3e apply(k, a()))\n\n const shift \x3d (p, f) \x3d\x3e Control(k \x3d\x3e {\n const split \x3d splitAt(k, p)\n const localCont \x3d a \x3d\x3e Control(k \x3d\x3e\n Step(pure(a), pushSubcont(split.head, k)))\n return Step(f(localCont), split.tail)\n })\n\n const callcc \x3d f \x3d\x3e Control(k \x3d\x3e {\n return f(a \x3d\x3e trampoline(apply(k, a)))\n })\n\n const abort \x3d Control(k \x3d\x3e $effekt.unit)\n\n\n const capture \x3d f \x3d\x3e {\n // [abort; f\n const action \x3d () \x3d\x3e f($effekt.unit).then(() \x3d\x3e abort)\n return shift(toplevel)(k \x3d\x3e\n k({\n shouldRun: false,\n cont : () \x3d\x3e k({ shouldRun: true, cont: action })\n })).then(a \x3d\x3e a.shouldRun ? a.cont() : $effekt.pure(a.cont))\n }\n\n //const reset \x3d (p, c \x3d\x3e Control(k \x3d\x3e Step(c, Stack(Nil, Arena(), p, k)))\n\n function handleMonadic(body) {\n const p \x3d _prompt++;\n return Control(k \x3d\x3e Step(body(p), Stack(Nil, Arena(), p, k)))\n }\n\n // Direct Style Runtime\n // --------------------\n\n // sealed trait Resumption[A, R]\n // case class Empty[A]() extends Resumption[A, A]\n // case class Segment[A, B, C](head: Stack[B, C], prompt: Prompt, tail: Resumption[A, B]) extends Resumption[A, C]\n class Segment {\n constructor(frames, prompt, region, backup, tail) {\n this.frames \x3d frames;\n this.prompt \x3d prompt;\n this.region \x3d region;\n this.backup \x3d backup;\n this.tail \x3d tail;\n }\n }\n const Empty \x3d null;\n\n // TODO maybe inline later to save native frames\n function handleOrRethrow(prompt, s, rest) {\n if (!(s instanceof Suspension)) throw s;\n\n const region \x3d currentRegion\n const k \x3d new Segment(reverseOnto(s.frames, rest), prompt, region, region.backup(), s.cont)\n if (s.prompt \x3d\x3d\x3d prompt) {\n return s.body((value) \x3d\x3e rewind(k, () \x3d\x3e value))\n } else {\n throw new Suspension(s.prompt, s.body, Nil, k)\n }\n }\n\n function rewind(k, thunk) {\n if (k \x3d\x3d\x3d Empty) {\n return thunk()\n } else {\n const prompt \x3d k.prompt;\n const region \x3d k.region;\n let rest \x3d k.frames // the pure frames\n\n // The trampoline\n try {\n enterRegion(region);\n region.restore(k.backup);\n\n let curr \x3d rewind(k.tail, thunk)\n while (rest !\x3d\x3d Nil) {\n const f \x3d rest.head\n rest \x3d rest.tail\n curr \x3d f(curr)\n }\n return curr\n } catch (s) {\n return handleOrRethrow(prompt, s, rest)\n } finally {\n leaveRegion()\n }\n }\n }\n\n\n // case class Suspend[A, X, Y, R](\n // body: Continuation[A, R] \x3d\x3e R,\n // prompt: Prompt,\n // pure: Frames[X, Y],\n // cont: Resumption[A, X]\n // )\n class Suspension {\n constructor(p, body, frames, cont) {\n this.prompt \x3d p;\n this.body \x3d body;\n this.frames \x3d frames;\n this.cont \x3d cont;\n }\n }\n\n // initially the toplevel region.\n let currentRegion \x3d global\n\n // a stack of regions\n let regions \x3d []\n\n function enterRegion(r) {\n regions.push(currentRegion)\n currentRegion \x3d r\n return r\n }\n\n function leaveRegion() {\n const leftRegion \x3d currentRegion\n currentRegion \x3d regions.pop()\n return leftRegion\n }\n\n return {\n // Common API\n // -----------\n constructor: (_, tag) \x3d\x3e function() {\n return { __tag: tag, __data: Array.from(arguments) }\n },\n\n hole: function() { throw "Implementation missing" },\n\n // Monadic API\n // -----------\n pure: pure,\n callcc: callcc,\n capture: capture,\n delayed: delayed,\n handleMonadic: handleMonadic,\n ref: Cell,\n state: withState,\n shift: shift,\n _if: (c, thn, els) \x3d\x3e c ? thn() : els(),\n withRegion: withRegion,\n\n\n // Direct style API\n // ----------------\n fresh: function(init) {\n return currentRegion.fresh(init)\n },\n\n freshPrompt: function() { return ++_prompt; },\n\n suspend: function(prompt, body) {\n _stacksize \x3d 0;\n throw new Suspension(prompt, body, Nil, Empty)\n },\n suspend_bidirectional: function(prompt, caps, body) {\n throw new Suspension(prompt, body, Cons(thunk \x3d\x3e thunk.apply(null, caps), Nil), Empty)\n },\n\n // suspension: the raised exception.\n push: function(suspension, frame) {\n if (!(suspension instanceof Suspension)) throw suspension;\n // Assuming `suspension` is a value or variable you want to return\n throw new Suspension(suspension.prompt, suspension.body,\n Cons(frame, suspension.frames), suspension.cont);\n },\n\n handle: function(prompt, s) {\n return handleOrRethrow(prompt, s, Nil)\n },\n\n freshRegion: function() {\n return enterRegion(new Arena)\n },\n\n leaveRegion: leaveRegion,\n\n global: global\n }\n})()\n\nObject.assign($effekt, $runtime);\n'); -Gv("js/effekt_builtins.js",'$effekt.show \x3d function(obj) {\n if (!!obj \x26\x26 !!obj.__reflect) {\n const meta \x3d obj.__reflect()\n return meta.__name + "(" + meta.__data.map($effekt.show).join(", ") + ")"\n }\n else if (!!obj \x26\x26 obj.__unit) {\n return "()";\n } else {\n return "" + obj;\n }\n}\n\n$effekt.equals \x3d function(obj1, obj2) {\n if (!!obj1.__equals) {\n return obj1.__equals(obj2)\n } else {\n return (obj1.__unit \x26\x26 obj2.__unit) || (obj1 \x3d\x3d\x3d obj2);\n }\n}\n\nfunction compare$prim(n1, n2) {\n if (n1 \x3d\x3d n2) { return 0; }\n else if (n1 \x3e n2) { return 1; }\n else { return -1; }\n}\n\n$effekt.compare \x3d function(obj1, obj2) {\n if ($effekt.equals(obj1, obj2)) { return 0; }\n\n if (!!obj1 \x26\x26 !!obj2) {\n if (!!obj1.__reflect \x26\x26 !!obj2.__reflect) {\n const tagOrdering \x3d compare$prim(obj1.__tag, obj2.__tag)\n if (tagOrdering !\x3d 0) { return tagOrdering; }\n\n const meta1 \x3d obj1.__reflect().__data\n const meta2 \x3d obj2.__reflect().__data\n\n const lengthOrdering \x3d compare$prim(meta1.length, meta2.length)\n if (lengthOrdering !\x3d 0) { return lengthOrdering; }\n\n for (let i \x3d 0; i \x3c meta1.length; i++) {\n const contentOrdering \x3d $effekt.compare(meta1[i], meta2[i])\n if (contentOrdering !\x3d 0) { return contentOrdering; }\n }\n\n return 0;\n }\n }\n\n return compare$prim(obj1, obj2);\n}\n\n$effekt.println \x3d function println$impl(str) {\n console.log(str); return $effekt.unit;\n}\n\n$effekt.unit \x3d { __unit: true }'); -Gv("js/web/dom.effekt",'module web/dom\n\nextern type Node\n\n// can be null\nextern pure def getElementById(id: String): Node \x3d\n js "document.getElementById(${id})"\n\nextern pure def createElement(tag: String): Node \x3d\n js "document.createElement(${tag})"\n\nextern pure def createTextNode(text: String): Node \x3d\n js "document.createTextNode(${text})"\n\nextern pure def setAttribute(node: Node, key: String, value: String): Node \x3d\n js "${node}.setAttribute(${key}, ${value})"\n\n// the string return type is wrong here...\nextern pure def getAttribute(node: Node, key: String): String \x3d\n js "${node}.getAttribute(${key})"\n\nextern pure def appendChild(node: Node, child: Node): Node \x3d\n js "${node}.appendChild(${child})"\n\nextern pure def innerHTML(node: Node, contents: String): Node \x3d\n js "(function() { ${node}.innerHTML \x3d ${contents}; return ${node} })()"\n\nextern type IdleDeadline\n\nextern pure def requestIdleCallback(callback: (IdleDeadline) \x3d\x3e Unit at {io}): Unit \x3d\n js "window.requestIdleCallback(deadline \x3d\x3e ${callback}(deadline).run())"\n\nextern pure def didDimeout(deadline: IdleDeadline): Bool \x3d\n js "${deadline}.didTimeout"\n\nextern pure def timeRemaining(deadline: IdleDeadline): Double \x3d\n js "${deadline}.timeRemaining()"\n\nextern pure def onClick(node: Node, handler: () \x3d\x3e Unit at {io}): Node \x3d\n js "(function() { ${node}.onclick \x3d () \x3d\x3e ${handler}().run(); return ${node} })()"\n\nextern def sleep(n: Int): Unit \x3d\n js "$effekt.callcc(k \x3d\x3e window.setTimeout(() \x3d\x3e k(null), ${n}))"\n\ndef clear(node: Node) \x3d node.innerHTML("")\n'); Gv("js/unsafe/cont.effekt",'module unsafe/cont\n\n// The type of a captured continuation\nextern type Cont[A, B]\n\n// we mark this as {io} since pure functions should not take block parameters.\nextern io def cont[A, B] { r: A \x3d\x3e B / {} }: Cont[A, B] \x3d js "${box r}"\n\n// This is unsafe if the continuation left the scope of the\n// capabilities it closed over\nextern async def apply[A, B](k: Cont[A, B], a: A): B / {} \x3d js "${k}(${a})"\n');Gv("js/text/regex.effekt",'module text/regex\n\nimport string\n\nextern type Regex\n\nrecord Match(matched: String, index: Int)\n\nextern pure def regex(str: String): Regex \x3d\n js "new RegExp(${str})"\n\ndef exec(reg: Regex, str: String): Option[Match] \x3d\n undefinedToOption(reg.unsafeExec(str)) match {\n case None() \x3d\x3e None()\n case Some(v) \x3d\x3e Some(Match(v.matched, v.index))\n }\n\n// internal representation { matched: String, index: Int }\nextern type RegexMatch\nextern pure def matched(r: RegexMatch): String \x3d js "${r}.matched"\nextern pure def index(r: RegexMatch): Int \x3d js "${r}.index"\n\nextern js !!!MULTILINEMARKER!!!\nfunction regex$exec(reg, str) {\n var res \x3d reg.exec(str);\n if (res \x3d\x3d\x3d null) { return undefined }\n else { return { matched: res[0], index: res.index } }\n}\n!!!MULTILINEMARKER!!!\n\n// internals\nextern io def unsafeExec(reg: Regex, str: String): RegexMatch \x3d\n js "regex$exec(${reg}, ${str})"\n'); +Gv("js/web/dom.effekt",'module web/dom\n\nextern type Node\n\n// can be null\nextern pure def getElementById(id: String): Node \x3d\n js "document.getElementById(${id})"\n\nextern pure def createElement(tag: String): Node \x3d\n js "document.createElement(${tag})"\n\nextern pure def createTextNode(text: String): Node \x3d\n js "document.createTextNode(${text})"\n\nextern pure def setAttribute(node: Node, key: String, value: String): Node \x3d\n js "${node}.setAttribute(${key}, ${value})"\n\n// the string return type is wrong here...\nextern pure def getAttribute(node: Node, key: String): String \x3d\n js "${node}.getAttribute(${key})"\n\nextern pure def appendChild(node: Node, child: Node): Node \x3d\n js "${node}.appendChild(${child})"\n\nextern pure def innerHTML(node: Node, contents: String): Node \x3d\n js "(function() { ${node}.innerHTML \x3d ${contents}; return ${node} })()"\n\nextern type IdleDeadline\n\nextern pure def requestIdleCallback(callback: (IdleDeadline) \x3d\x3e Unit at {io}): Unit \x3d\n js "window.requestIdleCallback(deadline \x3d\x3e ${callback}(deadline).run())"\n\nextern pure def didDimeout(deadline: IdleDeadline): Bool \x3d\n js "${deadline}.didTimeout"\n\nextern pure def timeRemaining(deadline: IdleDeadline): Double \x3d\n js "${deadline}.timeRemaining()"\n\nextern pure def onClick(node: Node, handler: () \x3d\x3e Unit at {io}): Node \x3d\n js "(function() { ${node}.onclick \x3d () \x3d\x3e ${handler}().run(); return ${node} })()"\n\nextern def sleep(n: Int): Unit \x3d\n js "$effekt.callcc(k \x3d\x3e window.setTimeout(() \x3d\x3e k(null), ${n}))"\n\ndef clear(node: Node) \x3d node.innerHTML("")\n'); +Gv("js/mutable/map.effekt",'module mutable/map\n\nimport array\n\n// A mutable map, backed by a JavaScript Map.\nextern type Map[K, V]\n\nextern pure def emptyMap[K, V](): Map[K, V] \x3d\n js "new Map()"\n\ndef get[K, V](m: Map[K, V], key: K): Option[V] \x3d\n undefinedToOption(m.unsafeGet(key))\n\nextern pure def unsafeGet[K, V](m: Map[K, V], key: K): V \x3d\n js "${m}.get(${key})"\n\nextern js !!!MULTILINEMARKER!!!\nfunction map$update(m, key, value) {\n m.set(key, value);\n return $effekt.unit\n}\n!!!MULTILINEMARKER!!!\n\nextern io def update[K, V](m: Map[K, V], key: K, value: V): Unit \x3d\n js "map$update(${m}, ${key}, ${value})"\n\nextern pure def values[K, V](map: Map[K, V]): Array[V] \x3d\n js "Array.from(${map}.values())"\n\nextern pure def keys[K, V](map: Map[K, V]): Array[K] \x3d\n js "Array.from(${map}.keys())"'); +Gv("common/string.effekt",'module string\n\nimport effekt\nimport option\nimport list\nimport exception\nimport result\n\n// TODO\n// - [ ] handle unicode codepoints (that can span two indices) correctly\n// - [ ] use string buffers or other buffers to implement repeated concatenation more efficiently (and `join`)\n// - [ ] maybe use native implementations for toInt, repeat, split, indexOf, etc.\n\n/**\n * Strings\n * - JS: Strings are represented as UTF-16 code units where some characters take 2 slots (surrogate pairs)\n * - ML: Strings are sequences of 8-bit characters (https://smlfamily.github.io/Basis/string.html)\n * - Chez: Strings are sequences of unicode characters (?)\n * - LLVM: UTF-8 (characters can take from 1-4 bytes).\n */\n\n\n// Operations\n// ----------\n\ndef substring(str: String, from: Int, to: Int): String \x3d {\n def clamp(lower: Int, x: Int, upper: Int) \x3d max(lower, min(x, upper))\n val lower \x3d clamp(0, from, to)\n val upper \x3d clamp(0, to, str.length)\n str.unsafeSubstring(lower, upper)\n}\n\ndef substring(str: String, from: Int): String \x3d\n str.substring(from, str.length)\n\n\n/**\n * Checks whether str starts with the given prefix at `from`\n */\ndef isSubstringAt(str: String, prefix: String, from: Int): Bool \x3d {\n with default[OutOfBounds, Bool] { false };\n\n val stringLength \x3d str.length\n val prefixLength \x3d prefix.length\n\n def done?(index: Int): Bool \x3d index \x3e\x3d prefixLength\n def matches?(index: Int): Bool \x3d prefix.charAt(index) \x3d\x3d str.charAt(index + from)\n\n def go(index: Int): Bool \x3d\n if (index.done?) true\n else if (index.matches?) go(index + 1) else false\n\n go(0)\n}\n\ndef startsWith(str: String, prefix: String): Bool \x3d\n isSubstringAt(str, prefix, 0)\n\ndef endsWith(str: String, suffix: String): Bool \x3d\n isSubstringAt(str, suffix, str.length - suffix.length)\n\n/**\n * Repeats the given string n-times.\n *\n * TODO use a more efficient way of appending strings like a buffer\n */\ndef repeat(str: String, n: Int): String \x3d {\n def go(n: Int, result: String): String \x3d {\n if (n \x3d\x3d 0) result\n else go(n - 1, result ++ str)\n }\n go(n, "")\n}\n\n// TODO use .split() in JS\ndef split(str: String, sep: String): List[String] \x3d {\n val strLength \x3d str.length\n val sepLength \x3d sep.length\n\n // special case: seperator is empty, just emit individual chars\n def empty(index: Int, components: List[String]): List[String] \x3d\n if (index \x3e\x3d strLength) components.reverse\n else empty(index + 1, Cons(str.substring(index, index + 1), components))\n\n def go(lastIndex: Int, components: List[String]): List[String] \x3d\n indexOf(str, sep, lastIndex) match {\n case None() \x3d\x3e\n Cons(str.substring(lastIndex, strLength), components).reverse\n case Some(index) \x3d\x3e\n go(index + sepLength, Cons(str.substring(lastIndex, index), components))\n }\n\n if (sepLength \x3d\x3d 0) empty(0, Nil())\n else go(0, Nil())\n}\n\ndef join(strings: List[String], sep: String): String \x3d {\n def go(strings: List[String], result: String): String \x3d strings match {\n case Nil() \x3d\x3e result\n case Cons(s, rest) \x3d\x3e go(rest, result ++ sep ++ s)\n }\n strings match {\n case Nil() \x3d\x3e ""\n case Cons(first, rest) \x3d\x3e go(rest, first)\n }\n}\n\nextern pure def trim(str: String): String \x3d\n js "${str}.trim()"\n\n// Parsing\n// -------\ndef toBool(s: String): Bool / Exception[WrongFormat] \x3d s match {\n case "true" \x3d\x3e true\n case "false" \x3d\x3e false\n case _ \x3d\x3e wrongFormat("Not a boolean value: \'" ++ s ++ "\'")\n}\n\n// TODO optimize (right now this will be horribly slow (compared to the native JS version)\ndef toInt(str: String): Int / Exception[WrongFormat] \x3d {\n\n val zero \x3d \'0\'.toInt\n\n def go(index: Int, acc: Int): Int \x3d {\n result[Char, OutOfBounds] { str.charAt(index) } match {\n case Success(c) and c \x3e\x3d \'0\' and c \x3c\x3d \'9\' \x3d\x3e\n go(index + 1, 10 * acc + (c.toInt - zero))\n case Success(c) \x3d\x3e wrongFormat("Not a valid number: \'" ++ str ++ "\'")\n // wrong index means we are done parsing\n case Error(_, _) \x3d\x3e acc\n }\n }\n\n with default[OutOfBounds, Int] { wrongFormat("Empty string is not a valid number") };\n\n str.charAt(0) match {\n case \'-\' \x3d\x3e 0 - go(1, 0)\n case _ \x3d\x3e go(0, 0)\n }\n}\n\n// TODO optimize (right now this will be horribly slow (compared to the native JS version)\ndef toInt(str: String, base: Int): Int / Exception[WrongFormat] \x3d {\n\n if( base \x3e 36 || base \x3c 1 ) {\n wrongFormat("Invalid base: " ++ base.show)\n }\n\n val zero \x3d \'0\'.toInt\n val l_a \x3d \'a\'.toInt\n val u_a \x3d \'A\'.toInt\n\n def parseDigit(c: Char): Option[Int] \x3d {\n if( c \x3e\x3d \'0\' and c \x3c\x3d \'9\' and c.toInt - zero \x3c base ) {\n Some(c.toInt - zero)\n } else if( c \x3e\x3d \'a\' and c \x3c\x3d \'z\' and c.toInt - l_a \x3c base - 10 ) {\n Some(c.toInt - l_a + 10)\n } else if( c \x3e\x3d \'A\' and c \x3c\x3d \'Z\' and c.toInt - u_a \x3c base - 10) {\n Some(c.toInt - u_a + 10)\n } else {\n None()\n }\n }\n\n def go(index: Int, acc: Int): Int \x3d {\n result[Char, OutOfBounds] { str.charAt(index) } match {\n case Success(c) and parseDigit(c) is Some(d) \x3d\x3e\n go(index + 1, base * acc + d)\n case Success(c) \x3d\x3e wrongFormat("Not a valid number: \'" ++ str ++ "\'")\n // wrong index means we are done parsing\n case Error(_, _) \x3d\x3e acc\n }\n }\n\n with default[OutOfBounds, Int] { wrongFormat("Empty string is not a valid number") };\n\n str.charAt(0) match {\n case \'-\' \x3d\x3e 0 - go(1, 0)\n case _ \x3d\x3e go(0, 0)\n }\n}\n\n// Native versions of toInt (unused right now)\n// ML: also accepts sml style `~2` for unary minus along with `+2` and `-2`\nextern pure def unsafeToInt(str: String): Int \x3d\n js "(Number.isNaN(parseInt(${str})) ? undefined : parseInt(${str}))"\n chez "(string-\x3enumber ${str})"\n ml "Int.fromString ${str}"\n\n\n/**\n * Returns the index of the first occurrence of `sub` in `str`\n */\ndef indexOf(str: String, sub: String): Option[Int] \x3d\n indexOf(str, sub, 0)\n\ndef indexOf(str: String, sub: String, from: Int): Option[Int] \x3d {\n val len \x3d str.length\n def go(index: Int): Option[Int] \x3d\n if (index \x3e\x3d len) None()\n else if (str.isSubstringAt(sub, index)) Some(index)\n else go(index + 1)\n\n go(from)\n}\n\n/**\n * Returns the index of the last occurence of `sub` in `str`\n */\ndef lastIndexOf(str: String, sub: String): Option[Int] \x3d\n lastIndexOf(str, sub, str.length)\n\ndef lastIndexOf(str: String, sub: String, from: Int): Option[Int] \x3d {\n def go(index: Int): Option[Int] \x3d\n if (index \x3c 0) None()\n else if (str.isSubstringAt(sub, index)) Some(index)\n else go(index - 1)\n\n go(from)\n}\n\n// TODO more efficient (native) implementations could be integrated as follows\n\n// extern pure def indexOf(str: String, sub: String): Option[Int] \x3d\n// //js { nativeIndexOf(str, sub) }\n// default { indexOf(str, sub, 0) }\n\n// def nativeIndexOf(str: String, sub: String): Option[Int] \x3d {\n// val index \x3d str.unsafeIndexOf(sub)\n// if (index \x3c 0) { None() } else { Some(index) }\n// }\n\n// extern pure def unsafeIndexOf(str: String, sub: String): Int \x3d\n// js "${str}.indexOf(${sub})"\n\ninterface Stream {\n def emit(string: Char): Unit\n}\n\ndef string[T] { prog: \x3d\x3e T / Stream }: (T, String) \x3d \x3c\x3e\n\n// TODO implement after concurrent IO (we need to stub `process.stdout` in JS for browsers).\ndef printing[T] { prog: \x3d\x3e T / Stream }: T \x3d \x3c\x3e\n\n\n// ANSI escape codes\nnamespace ANSI {\n val BLACK \x3d "\\u001b[30m"\n val RED \x3d "\\u001b[31m"\n val GREEN \x3d "\\u001b[32m"\n val YELLOW \x3d "\\u001b[33m"\n val BLUE \x3d "\\u001b[34m"\n val MAGENTA \x3d "\\u001b[35m"\n val CYAN \x3d "\\u001b[36m"\n val WHITE \x3d "\\u001b[37m"\n\n val BG_BLACK \x3d "\\u001b[40m"\n val BG_RED \x3d "\\u001b[41m"\n val BG_GREEN \x3d "\\u001b[42m"\n val BG_YELLOW \x3d "\\u001b[43m"\n val BG_BLUE \x3d "\\u001b[44m"\n val BG_MAGENTA \x3d "\\u001b[45m"\n val BG_CYAN \x3d "\\u001b[46m"\n val BG_WHITE \x3d "\\u001b[47m"\n\n val RESET \x3d "\\u001b[0m"\n}\n\n\n// Characters\n// ----------\n//\n// JS: Int (Unicode codepoints)\n// CS: ?\n// ML: 8-bit https://smlfamily.github.io/Basis/char.html\n// LLVM: i64 representing utf-8 (varying length 1-4 bytes)\n\nextern pure def toString(ch: Char): String \x3d\n js "String.fromCodePoint(${ch})"\n chez "(string (integer-\x3echar ${ch}))"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d call %Pos @c_buffer_show_Char(%Int ${ch})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\n// Since we currently represent Char by integers in all backends, we could reuse comparison\nextern pure def toInt(ch: Char): Int \x3d\n js "${ch}"\n chez "${ch}"\n ml "${ch}"\n llvm "ret %Int ${ch}"\n\nextern pure def toChar(codepoint: Int): Char \x3d\n js "${codepoint}"\n chez "${codepoint}"\n ml "${codepoint}"\n llvm "ret %Int ${codepoint}"\n\n\nextern pure def infixLt(x: Char, y: Char): Bool \x3d\n js "(${x} \x3c ${y})"\n chez "(\x3c ${x} ${y})"\n ml "(${x}: int) \x3c ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d icmp slt %Int ${x}, ${y}\n %fat_z \x3d zext i1 %z to i64\n %adt_boolean \x3d insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixLte(x: Char, y: Char): Bool \x3d\n js "(${x} \x3c\x3d ${y})"\n chez "(\x3c\x3d ${x} ${y})"\n ml "(${x}: int) \x3c\x3d ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d icmp sle %Int ${x}, ${y}\n %fat_z \x3d zext i1 %z to i64\n %adt_boolean \x3d insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixGt(x: Char, y: Char): Bool \x3d\n js "(${x} \x3e ${y})"\n chez "(\x3e ${x} ${y})"\n ml "(${x}: int) \x3e ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d icmp sgt %Int ${x}, ${y}\n %fat_z \x3d zext i1 %z to i64\n %adt_boolean \x3d insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixGte(x: Char, y: Char): Bool \x3d\n js "(${x} \x3e\x3d ${y})"\n chez "(\x3e\x3d ${x} ${y})"\n ml "(${x}: int) \x3e\x3d ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d icmp sge %Int ${x}, ${y}\n %fat_z \x3d zext i1 %z to i64\n %adt_boolean \x3d insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\n// TODO iterator over codepoints (maybe use the JS primitive feature???)\n\nextern type StringIterator\n\n\n/**\n * Determines the number of bytes needed by a codepoint\n *\n * Also see: https://en.wikipedia.org/wiki/UTF-8\n */\ndef utf8ByteCount(codepoint: Char): Int \x3d codepoint match {\n case c and c \x3e\x3d \\u0000 and c \x3c\x3d \\u007F \x3d\x3e 1\n case c and c \x3e\x3d \\u0080 and c \x3c\x3d \\u07FF \x3d\x3e 2\n case c and c \x3e\x3d \\u0800 and c \x3c\x3d \\uFFFF \x3d\x3e 3\n case c and c \x3e\x3d \\u10000 and c \x3c\x3d \\u10FFFF \x3d\x3e 4\n case c \x3d\x3e panic("Not a valid code point")\n}\n\ndef utf16UnitCount(codepoint: Char): Int \x3d codepoint match {\n case c and c \x3e\x3d \\u0000 and c \x3c\x3d \\uFFFF \x3d\x3e 1\n case c and c \x3e\x3d \\u10000 and c \x3c\x3d \\u10FFFF \x3d\x3e 4\n case c \x3d\x3e panic("Not a valid code point")\n}\n\n// TODO this is copied from the LLVM-backend stdlib. Do we need this?\n// def showQuoted(s: String): String \x3d\n// "\\x22" ++ s.map { c \x3d\x3e\n// if(c \x3d\x3d "\\x22") {\n// "\\\\\\x22"\n// } else if (c \x3d\x3d "\\\\") {\n// "\\\\\\\\"\n// } else c\n// } ++ "\\x22"\n\nextern pure def charWidth(c: Char): Int \x3d\n // JavaScript strings are UTF-16 where every unicode character after 0xffff takes two units\n js "(${c} \x3e 0xffff) ? 2 : 1"\n\ndef charAt(str: String, index: Int): Char / Exception[OutOfBounds] \x3d\n if (index \x3c 0 || index \x3e\x3d length(str))\n do raise(OutOfBounds(), "Index out of bounds: " ++ show(index) ++ " in string: \'" ++ str ++ "\'")\n else\n unsafeCharAt(str, index)\n\nextern pure def unsafeCharAt(str: String, n: Int): Char \x3d\n js "${str}.codePointAt(${n})"\n chez "(char-\x3einteger (string-ref ${str} ${n}))"\n ml "(Char.ord (String.sub (${str}, ${n})))"\n llvm !!!MULTILINEMARKER!!!\n %x \x3d call %Int @c_buffer_character_at(%Pos ${str}, i64 ${n})\n ret %Int %x\n !!!MULTILINEMARKER!!!\n'); +Gv("common/io/time.effekt",'module io/time\n\nextern llvm !!!MULTILINEMARKER!!!\n declare void @c_timer_start(%Int, %Stack)\n!!!MULTILINEMARKER!!!\n\nextern async def wait(millis: Int): Unit \x3d\n js "$effekt.callcc(callback \x3d\x3e setTimeout(() \x3d\x3e callback($effekt.unit), ${millis}))"\n llvm !!!MULTILINEMARKER!!!\n call void @c_timer_start(%Int ${millis}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n');Gv("common/io/console.effekt",'module io/console\n\nimport io\n\ninterface Console {\n def readLine(): String\n def writeLine(content: String): Unit\n}\n\n/**\n * Handler for the console effect, using the Console available in js\n */\ndef console[R] { program: () \x3d\x3e R / Console }: R \x3d {\n val c \x3d js::newConsole()\n try {\n val r \x3d program()\n js::close(c)\n return r\n } with Console {\n def readLine() \x3d resume(js::readLine(c))\n def writeLine(message) \x3d resume(js::writeLine(c, message))\n }\n}\n\nnamespace js {\n\n extern jsNode !!!MULTILINEMARKER!!!\n const readline \x3d require(\'node:readline\');\n !!!MULTILINEMARKER!!!\n\n extern type JSConsole\n\n extern io def newConsole(): JSConsole \x3d\n jsNode !!!MULTILINEMARKER!!!readline.createInterface({\n input: process.stdin,\n output: process.stdout,\n })!!!MULTILINEMARKER!!!\n\n extern io def close(console: JSConsole): Unit \x3d\n jsNode "${console}.close()"\n\n extern async def readLine(console: JSConsole): String \x3d\n jsNode "$effekt.callcc(callback \x3d\x3e ${console}.once(\'line\', callback))"\n\n extern io def writeLine(console: JSConsole, message: String): Unit \x3d\n jsNode "${console}.output.write(${message} + \'\\\\n\')"\n}\n\nnamespace examples {\n\n def greeter() \x3d {\n do writeLine("What\'s your name?")\n val name \x3d do readLine();\n do writeLine("Hi " ++ name ++ ", nice to meet you!")\n }\n\n def main() \x3d {\n with console;\n greeter()\n }\n\n}\n'); +Gv("common/io/filesystem.effekt","module io/filesystem\n\nimport bytes\n\nimport io\nimport io/error\n\n\n/**\n * Represents the file opening modes with their respective flags\n * Backends rely on the order of these\n */\ntype Mode {\n // Most common modes\n ReadOnly() // 'r' exception if does not exist\n WriteOnly() // 'w' created if does not exist, truncated if exists\n AppendOnly() // 'a' created if does not exist\n\n // Other modes\n ReadWrite() // 'w+' created if does not exist, truncated if exists\n ReadAppend() // 'a+' created if does not exist\n AppendExclusive() // 'ax' created if does not exist, fails if exists\n ReadAppendExclusive() // 'ax+' created if does not exist, fails if exists\n AppendSync() // 'as' created if does not exist, append in synchronous mode\n ReadAppendSync() // 'as+' created if does not exist, append in synchronous mode\n ReadSync() // 'rs' exception if does not exist, read in synchronous mode\n ReadWriteSync() // 'rs+' exception if does not exist, read/write in synchronous mode\n WriteExclusive() // 'wx' created if does not exist, truncated if exists, fails if exists\n ReadWriteExclusive() // 'wx+' created if does not exist, truncated if exists, fails if exists\n}\n\n\n/**\n * A file descriptor. Should not be inspected.\n */\ntype File \x3d Int\n\n\n/**\n * Reads a file at given path as utf8 encoded string.\n */\ndef readFile(path: String): String / Exception[IOError] \x3d {\n val fd \x3d open(path, ReadOnly());\n with on[IOError].finalize { close(fd) }\n\n val readSize \x3d 1048576 // 1MB\n var size \x3d readSize\n var buffer \x3d bytes(size)\n var offset \x3d 0;\n\n def go(): String \x3d {\n read(fd, buffer.slice(offset, min(readSize, size - offset)), -1) match {\n case 0 \x3d\x3e\n buffer.slice(0, offset).toUTF8\n case n and n \x3c 0 \x3d\x3e panic(\"Error!\")\n case n \x3d\x3e\n offset \x3d offset + n\n\n // we are at maximum capacity\n if (n \x3d\x3d readSize \x26\x26 (offset + readSize) \x3e size) {\n val newSize \x3d size * 2\n val newBuffer \x3d bytes(newSize)\n copy(buffer, newBuffer, 0, 0, size)\n buffer \x3d newBuffer\n size \x3d newSize\n }\n go()\n }\n }\n\n go()\n}\n\n/**\n * Writes the (utf8 encoded) string `contents` into the specified file.\n */\ndef writeFile(path: String, contents: String): Unit / Exception[IOError] \x3d {\n val fd \x3d open(path, WriteOnly());\n with on[IOError].finalize { close(fd) }\n\n val writeSize \x3d 1048576 // 1MB\n\n // this induces a memcpy that is not strictly necessary, since we use the buffer read-only\n val buffer \x3d contents.fromUTF8\n val size \x3d buffer.size\n\n var offset \x3d 0;\n def remaining() \x3d size - offset\n\n def go(): Unit \x3d\n write(fd, buffer.slice(offset, min(writeSize, remaining())), -1) match {\n case 0 \x3d\x3e ()\n case n and n \x3c 0 \x3d\x3e panic(\"Error!\")\n case n \x3d\x3e\n offset \x3d offset + n;\n if (remaining() \x3e 0) go()\n }\n\n go()\n}\n\n\n/**\n * An abstract interface applications can program against.\n *\n * Can be interpreted with the `filesystem` handler, or virtualized etc.\n *\n * See example below.\n */\ninterface Files {\n def readFile(path: String): String\n def writeFile(path: String, contents: String): Unit\n}\n\n/**\n * Using the file system via node.js\n */\ndef filesystem[R] { program: \x3d\x3e R / Files }: R / Exception[IOError] \x3d // TODO move Exception to be bidirectional\n try { program() }\n with Files {\n def readFile(path) \x3d resume(readFile(path))\n def writeFile(path, contents) \x3d resume(writeFile(path, contents))\n }\n\n\ndef open(path: String, mode: Mode): File / Exception[IOError] \x3d\n internal::checkResult(internal::open(path, mode))\n\ndef read(fd: File, buffer: Bytes, offset: Int): Int / Exception[IOError] \x3d\n internal::checkResult(internal::read(fd, buffer, offset))\n\ndef write(fd: File, buffer: Bytes, offset: Int): Int / Exception[IOError] \x3d\n internal::checkResult(internal::write(fd, buffer, offset))\n\ndef close(fd: File): Unit / Exception[IOError] \x3d {\n internal::checkResult(internal::close(fd)); ()\n}\n\nnamespace internal {\n\n extern js !!!MULTILINEMARKER!!!\n function modeName(mode) {\n switch (mode.__tag) {\n case 0: // ReadOnly()\n return 'r';\n case 1: // WriteOnly()\n return 'w';\n case 2: // AppendOnly()\n return 'a';\n case 3: // ReadWrite()\n return 'w+';\n case 4: // ReadAppend()\n return 'a+';\n case 5: // AppendExclusive()\n return 'ax';\n case 6: // ReadAppendExclusive()\n return 'ax+';\n case 7: // AppendSync()\n return 'as';\n case 8: // ReadAppendSync()\n return 'as+';\n case 9: // ReadSync()\n return 'rs';\n case 10: // ReadWriteSync()\n return 'rs+';\n case 11: // WriteExclusive()\n return 'wx';\n case 12: // ReadWriteExclusive()\n return 'wx+';\n default:\n // Invalid tag value\n return null;\n }\n }\n\n /**\n * Nodejs file operations expect buffers, but we represent buffers as typed arrays.\n * This function converts between the two without copying.\n */\n function toBuffer(buffer) {\n return Buffer.from(buffer.buffer, buffer.byteOffset, buffer.byteLength)\n }\n !!!MULTILINEMARKER!!!\n\n extern jsNode !!!MULTILINEMARKER!!!\n const fs \x3d require(\"fs\");\n\n function open(path, mode, callback) {\n fs.open(path, modeName(mode), (err, fd) \x3d\x3e {\n if (err) { callback(err.errno) } else { callback(fd) }\n })\n }\n\n function read(fd, buffer, offset, callback) {\n let position \x3d offset \x3d\x3d\x3d -1 ? null : offset;\n fs.read(fd, toBuffer(buffer), 0, buffer.length, position, (err, bytesRead) \x3d\x3e {\n if (err) { callback(err.errno) } else { callback(bytesRead) }\n })\n }\n\n function write(fd, buffer, offset, callback) {\n let position \x3d offset \x3d\x3d\x3d -1 ? null : offset;\n fs.write(fd, toBuffer(buffer), 0, buffer.length, position, (err, bytesWritten) \x3d\x3e {\n if (err) { callback(err.errno) } else { callback(bytesWritten) }\n })\n }\n\n function close(fd, callback) {\n fs.close(fd, (err) \x3d\x3e {\n if (err) { callback(err.errno) } else { callback(0) }\n })\n }\n !!!MULTILINEMARKER!!!\n\n extern llvm !!!MULTILINEMARKER!!!\n declare void @c_fs_open(%Pos, %Pos, %Stack)\n declare void @c_fs_read(%Int, %Pos, %Int, %Stack)\n declare void @c_fs_write(%Int, %Pos, %Int, %Stack)\n declare void @c_fs_close(%Int, %Stack)\n !!!MULTILINEMARKER!!!\n\n extern async def open(path: String, mode: Mode): Int \x3d\n jsNode \"$effekt.callcc(callback \x3d\x3e open(${path}, ${mode}, callback))\"\n llvm !!!MULTILINEMARKER!!!\n call void @c_fs_open(%Pos ${path}, %Pos ${mode}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\n extern async def read(fd: Int, buffer: Bytes, offset: Int): Int \x3d\n jsNode \"$effekt.callcc(callback \x3d\x3e read(${fd}, ${buffer}, ${offset}, callback))\"\n llvm !!!MULTILINEMARKER!!!\n call void @c_fs_read(%Int ${fd}, %Pos ${buffer}, %Int ${offset}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\n extern async def write(fd: Int, buffer: Bytes, offset: Int): Int \x3d\n jsNode \"$effekt.callcc(callback \x3d\x3e write(${fd}, ${buffer}, ${offset}, callback))\"\n llvm !!!MULTILINEMARKER!!!\n call void @c_fs_write(%Int ${fd}, %Pos ${buffer}, %Int ${offset}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\n extern async def close(fd: Int): Int \x3d\n jsNode \"$effekt.callcc(callback \x3d\x3e close(${fd}, callback))\"\n llvm !!!MULTILINEMARKER!!!\n call void @c_fs_close(%Int ${fd}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\n def checkResult(result: Int): Int / Exception[IOError] \x3d\n if (result \x3c 0) {\n val ioError \x3d fromNumber(internal::errorNumber(result));\n do raise[IOError](ioError, message(ioError))\n } else {\n result\n }\n}\n\nnamespace examples {\n\n // Example illustrating using abstract files interface\n // and interpreting it into asynchronous IO\n def copy(from: String, to: String): Unit / Files \x3d {\n val contents \x3d do readFile(from)\n do writeFile(to, contents)\n }\n\n def main() \x3d {\n with on[IOError].panic;\n with filesystem;\n\n copy(\"README.md\", \"out/test.md\")\n }\n}\n"); +Gv("common/io/error.effekt",'module io/error\n\n/**\n * Errors defined by libuv that can occur in IO operations.\n *\n * In addition to the named error codes, we also assign each error a\n * (positive) integer value that is stable across the different platforms.\n *\n * For the mapping of IOError and code values, see function fromCode.\n *\n * While stable, this integer value is supposed to only be used internally.\n * All user-facing operations should use values of type IOError, instead.\n *\n * see: https://docs.libuv.org/en/v1.x/errors.html\n */\ntype IOError {\n E2BIG();\n EACCES();\n EADDRINUSE();\n EADDRNOTAVAIL();\n EAFNOSUPPORT();\n EAGAIN();\n EAI_ADDRFAMILY();\n EAI_AGAIN();\n EAI_BADFLAGS();\n EAI_BADHINTS();\n EAI_CANCELED();\n EAI_FAIL();\n EAI_FAMILY();\n EAI_MEMORY();\n EAI_NODATA();\n EAI_NONAME();\n EAI_OVERFLOW();\n EAI_PROTOCOL();\n EAI_SERVICE();\n EAI_SOCKTYPE();\n EALREADY();\n EBADF();\n EBUSY();\n ECANCELED();\n ECHARSET();\n ECONNABORTED();\n ECONNREFUSED();\n ECONNRESET();\n EDESTADDRREQ();\n EEXIST();\n EFAULT();\n EFBIG();\n EHOSTUNREACH();\n EINTR();\n EINVAL();\n EIO();\n EISCONN();\n EISDIR();\n ELOOP();\n EMFILE();\n EMSGSIZE();\n ENAMETOOLONG();\n ENETDOWN();\n ENETUNREACH();\n ENFILE();\n ENOBUFS();\n ENODEV();\n ENOENT();\n ENOMEM();\n ENONET();\n ENOPROTOOPT();\n ENOSPC();\n ENOSYS();\n ENOTCONN();\n ENOTDIR();\n ENOTEMPTY();\n ENOTSOCK();\n ENOTSUP();\n EOVERFLOW();\n EPERM();\n EPIPE();\n EPROTO();\n EPROTONOSUPPORT();\n EPROTOTYPE();\n ERANGE();\n EROFS();\n ESHUTDOWN();\n ESPIPE();\n ESRCH();\n ETIMEDOUT();\n ETXTBSY();\n EXDEV();\n UNKNOWN();\n EOF();\n ENXIO();\n EMLINK();\n ENOTTY();\n EFTYPE();\n EILSEQ();\n ESOCKTNOSUPPORT();\n EUNATCH()\n}\n\n/**\n * Corresponding error message for a libuv error\n *\n * see: https://docs.libuv.org/en/v1.x/errors.html\n */\ndef message(error: IOError): String \x3d error match {\n case E2BIG() \x3d\x3e "argument list too long"\n case EACCES() \x3d\x3e "permission denied"\n case EADDRINUSE() \x3d\x3e "address already in use"\n case EADDRNOTAVAIL() \x3d\x3e "address not available"\n case EAFNOSUPPORT() \x3d\x3e "address family not supported"\n case EAGAIN() \x3d\x3e "resource temporarily unavailable"\n case EAI_ADDRFAMILY() \x3d\x3e "address family not supported"\n case EAI_AGAIN() \x3d\x3e "temporary failure"\n case EAI_BADFLAGS() \x3d\x3e "bad ai_flags value"\n case EAI_BADHINTS() \x3d\x3e "invalid value for hints"\n case EAI_CANCELED() \x3d\x3e "request canceled"\n case EAI_FAIL() \x3d\x3e "permanent failure"\n case EAI_FAMILY() \x3d\x3e "ai_family not supported"\n case EAI_MEMORY() \x3d\x3e "out of memory"\n case EAI_NODATA() \x3d\x3e "no address"\n case EAI_NONAME() \x3d\x3e "unknown node or service"\n case EAI_OVERFLOW() \x3d\x3e "argument buffer overflow"\n case EAI_PROTOCOL() \x3d\x3e "resolved protocol is unknown"\n case EAI_SERVICE() \x3d\x3e "service not available for socket type"\n case EAI_SOCKTYPE() \x3d\x3e "socket type not supported"\n case EALREADY() \x3d\x3e "connection already in progress"\n case EBADF() \x3d\x3e "bad file descriptor"\n case EBUSY() \x3d\x3e "resource busy or locked"\n case ECANCELED() \x3d\x3e "operation canceled"\n case ECHARSET() \x3d\x3e "invalid Unicode character"\n case ECONNABORTED() \x3d\x3e "software caused connection abort"\n case ECONNREFUSED() \x3d\x3e "connection refused"\n case ECONNRESET() \x3d\x3e "connection reset by peer"\n case EDESTADDRREQ() \x3d\x3e "destination address required"\n case EEXIST() \x3d\x3e "file already exists"\n case EFAULT() \x3d\x3e "bad address in system call argument"\n case EFBIG() \x3d\x3e "file too large"\n case EHOSTUNREACH() \x3d\x3e "host is unreachable"\n case EINTR() \x3d\x3e "interrupted system call"\n case EINVAL() \x3d\x3e "invalid argument"\n case EIO() \x3d\x3e "i/o error"\n case EISCONN() \x3d\x3e "socket is already connected"\n case EISDIR() \x3d\x3e "illegal operation on a directory"\n case ELOOP() \x3d\x3e "too many symbolic links encountered"\n case EMFILE() \x3d\x3e "too many open files"\n case EMSGSIZE() \x3d\x3e "message too long"\n case ENAMETOOLONG() \x3d\x3e "name too long"\n case ENETDOWN() \x3d\x3e "network is down"\n case ENETUNREACH() \x3d\x3e "network is unreachable"\n case ENFILE() \x3d\x3e "file table overflow"\n case ENOBUFS() \x3d\x3e "no buffer space available"\n case ENODEV() \x3d\x3e "no such device"\n case ENOENT() \x3d\x3e "no such file or directory"\n case ENOMEM() \x3d\x3e "not enough memory"\n case ENONET() \x3d\x3e "machine is not on the network"\n case ENOPROTOOPT() \x3d\x3e "protocol not available"\n case ENOSPC() \x3d\x3e "no space left on device"\n case ENOSYS() \x3d\x3e "function not implemented"\n case ENOTCONN() \x3d\x3e "socket is not connected"\n case ENOTDIR() \x3d\x3e "not a directory"\n case ENOTEMPTY() \x3d\x3e "directory not empty"\n case ENOTSOCK() \x3d\x3e "socket operation on non-socket"\n case ENOTSUP() \x3d\x3e "operation not supported on socket"\n case EOVERFLOW() \x3d\x3e "value too large for defined data type"\n case EPERM() \x3d\x3e "operation not permitted"\n case EPIPE() \x3d\x3e "broken pipe"\n case EPROTO() \x3d\x3e "protocol error"\n case EPROTONOSUPPORT() \x3d\x3e "protocol not supported"\n case EPROTOTYPE() \x3d\x3e "protocol wrong type for socket"\n case ERANGE() \x3d\x3e "result too large"\n case EROFS() \x3d\x3e "read-only file system"\n case ESHUTDOWN() \x3d\x3e "cannot send after transport endpoint shutdown"\n case ESPIPE() \x3d\x3e "invalid seek"\n case ESRCH() \x3d\x3e "no such process"\n case ETIMEDOUT() \x3d\x3e "connection timed out"\n case ETXTBSY() \x3d\x3e "text file is busy"\n case EXDEV() \x3d\x3e "cross-device link not permitted"\n case UNKNOWN() \x3d\x3e "unknown error"\n case EOF() \x3d\x3e "end of file"\n case ENXIO() \x3d\x3e "no such device or address"\n case EMLINK() \x3d\x3e "too many links"\n case ENOTTY() \x3d\x3e "inappropriate ioctl for device"\n case EFTYPE() \x3d\x3e "inappropriate file type or format"\n case EILSEQ() \x3d\x3e "illegal byte sequence"\n case ESOCKTNOSUPPORT() \x3d\x3e "socket type not supported"\n case EUNATCH() \x3d\x3e "protocol driver not attached"\n}\n\n/**\n * Corresponding name of a libuv error\n *\n * see: https://docs.libuv.org/en/v1.x/errors.html\n */\ndef name(error: IOError): String \x3d error match {\n case E2BIG() \x3d\x3e "E2BIG"\n case EACCES() \x3d\x3e "EACCES"\n case EADDRINUSE() \x3d\x3e "EADDRINUSE"\n case EADDRNOTAVAIL() \x3d\x3e "EADDRNOTAVAIL"\n case EAFNOSUPPORT() \x3d\x3e "EAFNOSUPPORT"\n case EAGAIN() \x3d\x3e "EAGAIN"\n case EAI_ADDRFAMILY() \x3d\x3e "EAI_ADDRFAMILY"\n case EAI_AGAIN() \x3d\x3e "EAI_AGAIN"\n case EAI_BADFLAGS() \x3d\x3e "EAI_BADFLAGS"\n case EAI_BADHINTS() \x3d\x3e "EAI_BADHINTS"\n case EAI_CANCELED() \x3d\x3e "EAI_CANCELED"\n case EAI_FAIL() \x3d\x3e "EAI_FAIL"\n case EAI_FAMILY() \x3d\x3e "EAI_FAMILY"\n case EAI_MEMORY() \x3d\x3e "EAI_MEMORY"\n case EAI_NODATA() \x3d\x3e "EAI_NODATA"\n case EAI_NONAME() \x3d\x3e "EAI_NONAME"\n case EAI_OVERFLOW() \x3d\x3e "EAI_OVERFLOW"\n case EAI_PROTOCOL() \x3d\x3e "EAI_PROTOCOL"\n case EAI_SERVICE() \x3d\x3e "EAI_SERVICE"\n case EAI_SOCKTYPE() \x3d\x3e "EAI_SOCKTYPE"\n case EALREADY() \x3d\x3e "EALREADY"\n case EBADF() \x3d\x3e "EBADF"\n case EBUSY() \x3d\x3e "EBUSY"\n case ECANCELED() \x3d\x3e "ECANCELED"\n case ECHARSET() \x3d\x3e "ECHARSET"\n case ECONNABORTED() \x3d\x3e "ECONNABORTED"\n case ECONNREFUSED() \x3d\x3e "ECONNREFUSED"\n case ECONNRESET() \x3d\x3e "ECONNRESET"\n case EDESTADDRREQ() \x3d\x3e "EDESTADDRREQ"\n case EEXIST() \x3d\x3e "EEXIST"\n case EFAULT() \x3d\x3e "EFAULT"\n case EFBIG() \x3d\x3e "EFBIG"\n case EHOSTUNREACH() \x3d\x3e "EHOSTUNREACH"\n case EINTR() \x3d\x3e "EINTR"\n case EINVAL() \x3d\x3e "EINVAL"\n case EIO() \x3d\x3e "EIO"\n case EISCONN() \x3d\x3e "EISCONN"\n case EISDIR() \x3d\x3e "EISDIR"\n case ELOOP() \x3d\x3e "ELOOP"\n case EMFILE() \x3d\x3e "EMFILE"\n case EMSGSIZE() \x3d\x3e "EMSGSIZE"\n case ENAMETOOLONG() \x3d\x3e "ENAMETOOLONG"\n case ENETDOWN() \x3d\x3e "ENETDOWN"\n case ENETUNREACH() \x3d\x3e "ENETUNREACH"\n case ENFILE() \x3d\x3e "ENFILE"\n case ENOBUFS() \x3d\x3e "ENOBUFS"\n case ENODEV() \x3d\x3e "ENODEV"\n case ENOENT() \x3d\x3e "ENOENT"\n case ENOMEM() \x3d\x3e "ENOMEM"\n case ENONET() \x3d\x3e "ENONET"\n case ENOPROTOOPT() \x3d\x3e "ENOPROTOOPT"\n case ENOSPC() \x3d\x3e "ENOSPC"\n case ENOSYS() \x3d\x3e "ENOSYS"\n case ENOTCONN() \x3d\x3e "ENOTCONN"\n case ENOTDIR() \x3d\x3e "ENOTDIR"\n case ENOTEMPTY() \x3d\x3e "ENOTEMPTY"\n case ENOTSOCK() \x3d\x3e "ENOTSOCK"\n case ENOTSUP() \x3d\x3e "ENOTSUP"\n case EOVERFLOW() \x3d\x3e "EOVERFLOW"\n case EPERM() \x3d\x3e "EPERM"\n case EPIPE() \x3d\x3e "EPIPE"\n case EPROTO() \x3d\x3e "EPROTO"\n case EPROTONOSUPPORT() \x3d\x3e "EPROTONOSUPPORT"\n case EPROTOTYPE() \x3d\x3e "EPROTOTYPE"\n case ERANGE() \x3d\x3e "ERANGE"\n case EROFS() \x3d\x3e "EROFS"\n case ESHUTDOWN() \x3d\x3e "ESHUTDOWN"\n case ESPIPE() \x3d\x3e "ESPIPE"\n case ESRCH() \x3d\x3e "ESRCH"\n case ETIMEDOUT() \x3d\x3e "ETIMEDOUT"\n case ETXTBSY() \x3d\x3e "ETXTBSY"\n case EXDEV() \x3d\x3e "EXDEV"\n case UNKNOWN() \x3d\x3e "UNKNOWN"\n case EOF() \x3d\x3e "EOF"\n case ENXIO() \x3d\x3e "ENXIO"\n case EMLINK() \x3d\x3e "EMLINK"\n case ENOTTY() \x3d\x3e "ENOTTY"\n case EFTYPE() \x3d\x3e "EFTYPE"\n case EILSEQ() \x3d\x3e "EILSEQ"\n case ESOCKTNOSUPPORT() \x3d\x3e "ESOCKTNOSUPPORT"\n case EUNATCH() \x3d\x3e "EUNATCH"\n}\n\n/**\n * Translates a integer code value to an IOError.\n *\n * See documentation of type IOError for further information.\n */\ndef fromNumber(number: Int): IOError \x3d number match {\n case 1 \x3d\x3e EPERM()\n case 2 \x3d\x3e ENOENT()\n case 3 \x3d\x3e ESRCH()\n case 4 \x3d\x3e EINTR()\n case 5 \x3d\x3e EIO()\n case 6 \x3d\x3e ENXIO()\n case 7 \x3d\x3e E2BIG()\n case 9 \x3d\x3e EBADF()\n case 11 \x3d\x3e EAGAIN()\n case 12 \x3d\x3e ENOMEM()\n case 13 \x3d\x3e EACCES()\n case 14 \x3d\x3e EFAULT()\n case 16 \x3d\x3e EBUSY()\n case 17 \x3d\x3e EEXIST()\n case 18 \x3d\x3e EXDEV()\n case 19 \x3d\x3e ENODEV()\n case 20 \x3d\x3e ENOTDIR()\n case 21 \x3d\x3e EISDIR()\n case 22 \x3d\x3e EINVAL()\n case 23 \x3d\x3e ENFILE()\n case 24 \x3d\x3e EMFILE()\n case 25 \x3d\x3e ENOTTY()\n case 26 \x3d\x3e ETXTBSY()\n case 27 \x3d\x3e EFBIG()\n case 28 \x3d\x3e ENOSPC()\n case 29 \x3d\x3e ESPIPE()\n case 30 \x3d\x3e EROFS()\n case 31 \x3d\x3e EMLINK()\n case 32 \x3d\x3e EPIPE()\n case 34 \x3d\x3e ERANGE()\n case 36 \x3d\x3e ENAMETOOLONG()\n case 40 \x3d\x3e ELOOP()\n case 75 \x3d\x3e EOVERFLOW()\n case 79 \x3d\x3e EFTYPE()\n case 84 \x3d\x3e EILSEQ()\n case 88 \x3d\x3e ENOTSOCK()\n case 89 \x3d\x3e EDESTADDRREQ()\n case 90 \x3d\x3e EMSGSIZE()\n case 91 \x3d\x3e EPROTOTYPE()\n case 92 \x3d\x3e ENOPROTOOPT()\n case 93 \x3d\x3e EPROTONOSUPPORT()\n case 94 \x3d\x3e ESOCKTNOSUPPORT()\n case 95 \x3d\x3e ENOTSUP()\n case 97 \x3d\x3e EAFNOSUPPORT()\n case 98 \x3d\x3e EADDRINUSE()\n case 99 \x3d\x3e EADDRNOTAVAIL()\n case 100 \x3d\x3e ENETDOWN()\n case 101 \x3d\x3e ENETUNREACH()\n case 103 \x3d\x3e ECONNABORTED()\n case 104 \x3d\x3e ECONNRESET()\n case 105 \x3d\x3e ENOBUFS()\n case 106 \x3d\x3e EISCONN()\n case 107 \x3d\x3e ENOTCONN()\n case 110 \x3d\x3e ETIMEDOUT()\n case 111 \x3d\x3e ECONNREFUSED()\n case 113 \x3d\x3e EHOSTUNREACH()\n case 114 \x3d\x3e EALREADY()\n case 125 \x3d\x3e ECANCELED()\n\n case 200 \x3d\x3e EAI_ADDRFAMILY()\n case 201 \x3d\x3e EAI_AGAIN()\n case 202 \x3d\x3e EAI_BADFLAGS()\n case 203 \x3d\x3e EAI_BADHINTS()\n case 204 \x3d\x3e EAI_CANCELED()\n case 205 \x3d\x3e EAI_FAIL()\n case 206 \x3d\x3e EAI_FAMILY()\n case 207 \x3d\x3e EAI_MEMORY()\n case 208 \x3d\x3e EAI_NODATA()\n case 209 \x3d\x3e EAI_NONAME()\n case 210 \x3d\x3e EAI_OVERFLOW()\n case 211 \x3d\x3e EAI_PROTOCOL()\n case 212 \x3d\x3e EAI_SERVICE()\n case 213 \x3d\x3e EAI_SOCKTYPE()\n case 215 \x3d\x3e ECHARSET()\n case 216 \x3d\x3e ENONET()\n case 217 \x3d\x3e UNKNOWN()\n case 218 \x3d\x3e EOF()\n case 219 \x3d\x3e EUNATCH()\n case 220 \x3d\x3e ESHUTDOWN()\n\n case _ \x3d\x3e panic("Not a valid error code: " ++ show(number))\n}\n\nnamespace internal {\n\n extern llvm !!!MULTILINEMARKER!!!\n declare %Int @c_error_number(%Int)\n !!!MULTILINEMARKER!!!\n\n extern jsNode !!!MULTILINEMARKER!!!\n const os \x3d require(\'node:os\');\n\n /**\n * Maps the error code to a Effekt-stable (platform independent) numeric value.\n *\n * Tries to use most common errno integer values, but introduces fresh values (\x3e 200)\n * for those without common errno values.\n */\n function errorNumber(errno) {\n const errnoMap \x3d {\n [os.constants.errno.EPERM]: 1,\n [os.constants.errno.ENOENT]: 2,\n [os.constants.errno.ESRCH]: 3,\n [os.constants.errno.EINTR]: 4,\n [os.constants.errno.EIO]: 5,\n [os.constants.errno.ENXIO]: 6,\n [os.constants.errno.E2BIG]: 7,\n [os.constants.errno.EBADF]: 9,\n [os.constants.errno.EAGAIN]: 11,\n [os.constants.errno.ENOMEM]: 12,\n [os.constants.errno.EACCES]: 13,\n [os.constants.errno.EFAULT]: 14,\n [os.constants.errno.EBUSY]: 16,\n [os.constants.errno.EEXIST]: 17,\n [os.constants.errno.EXDEV]: 18,\n [os.constants.errno.ENODEV]: 19,\n [os.constants.errno.ENOTDIR]: 20,\n [os.constants.errno.EISDIR]: 21,\n [os.constants.errno.EINVAL]: 22,\n [os.constants.errno.ENFILE]: 23,\n [os.constants.errno.EMFILE]: 24,\n [os.constants.errno.ENOTTY]: 25,\n [os.constants.errno.ETXTBSY]: 26,\n [os.constants.errno.EFBIG]: 27,\n [os.constants.errno.ENOSPC]: 28,\n [os.constants.errno.ESPIPE]: 29,\n [os.constants.errno.EROFS]: 30,\n [os.constants.errno.EMLINK]: 31,\n [os.constants.errno.EPIPE]: 32,\n [os.constants.errno.ERANGE]: 34,\n [os.constants.errno.ENAMETOOLONG]: 36,\n [os.constants.errno.ELOOP]: 40,\n [os.constants.errno.EOVERFLOW]: 75,\n [os.constants.errno.EFTYPE]: 79,\n [os.constants.errno.EILSEQ]: 84,\n [os.constants.errno.ENOTSOCK]: 88,\n [os.constants.errno.EDESTADDRREQ]: 89,\n [os.constants.errno.EMSGSIZE]: 90,\n [os.constants.errno.EPROTOTYPE]: 91,\n [os.constants.errno.ENOPROTOOPT]: 92,\n [os.constants.errno.EPROTONOSUPPORT]: 93,\n [os.constants.errno.ESOCKTNOSUPPORT]: 94,\n [os.constants.errno.ENOTSUP]: 95,\n [os.constants.errno.EAFNOSUPPORT]: 97,\n [os.constants.errno.EADDRINUSE]: 98,\n [os.constants.errno.EADDRNOTAVAIL]: 99,\n [os.constants.errno.ENETDOWN]: 100,\n [os.constants.errno.ENETUNREACH]: 101,\n [os.constants.errno.ECONNABORTED]: 103,\n [os.constants.errno.ECONNRESET]: 104,\n [os.constants.errno.ENOBUFS]: 105,\n [os.constants.errno.EISCONN]: 106,\n [os.constants.errno.ENOTCONN]: 107,\n [os.constants.errno.ETIMEDOUT]: 110,\n [os.constants.errno.ECONNREFUSED]: 111,\n [os.constants.errno.EHOSTUNREACH]: 113,\n [os.constants.errno.EALREADY]: 114,\n [os.constants.errno.ECANCELED]: 125,\n [os.constants.errno.EAI_ADDRFAMILY]: 200,\n [os.constants.errno.EAI_AGAIN]: 201,\n [os.constants.errno.EAI_BADFLAGS]: 202,\n [os.constants.errno.EAI_BADHINTS]: 203,\n [os.constants.errno.EAI_CANCELED]: 204,\n [os.constants.errno.EAI_FAIL]: 205,\n [os.constants.errno.EAI_FAMILY]: 206,\n [os.constants.errno.EAI_MEMORY]: 207,\n [os.constants.errno.EAI_NODATA]: 208,\n [os.constants.errno.EAI_NONAME]: 209,\n [os.constants.errno.EAI_OVERFLOW]: 210,\n [os.constants.errno.EAI_PROTOCOL]: 211,\n [os.constants.errno.EAI_SERVICE]: 212,\n [os.constants.errno.EAI_SOCKTYPE]: 213,\n [os.constants.errno.ECHARSET]: 215,\n [os.constants.errno.ENONET]: 216,\n [os.constants.errno.UNKNOWN]: 217,\n [os.constants.errno.EOF]: 218,\n [os.constants.errno.EUNATCH]: 219,\n [os.constants.errno.ESHUTDOWN]: 220\n };\n return errnoMap[-errno] || -1; // Default to -1 for unknown error names\n }\n !!!MULTILINEMARKER!!!\n\n extern pure def errorNumber(errno: Int): Int \x3d\n jsNode "errorNumber(${errno})"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d call %Int @c_error_number(%Int ${errno})\n ret %Int %z\n !!!MULTILINEMARKER!!!\n\n}\n'); +Gv("common/io/network.effekt",'module io/network\n\nimport bytes\nimport io\n\nnamespace js {\n extern jsNode !!!MULTILINEMARKER!!!\n const net \x3d require(\'node:net\');\n\n function listen(server, port, host, listener) {\n server.listen(port, host);\n server.on(\'connection\', listener);\n }\n !!!MULTILINEMARKER!!!\n\n extern type JSServer // \x3d net.Server\n extern type JSSocket // \x3d net.Socket\n extern io def server(): JSServer \x3d\n jsNode "net.createServer()"\n extern io def listen(server: JSServer, port: Int, host: String, listener: JSSocket \x3d\x3e Unit at {io, async, global}): Unit \x3d\n jsNode "listen(${server}, ${port}, ${host}, (socket) \x3d\x3e (${listener})(socket).run())"\n\n extern async def send(socket: JSSocket, data: Bytes): Unit \x3d\n jsNode "$effekt.callcc(callback \x3d\x3e ${socket}.write(${data}, callback))"\n\n extern async def receive(socket: JSSocket): Bytes \x3d\n jsNode "$effekt.callcc(callback \x3d\x3e ${socket}.once(\'data\', callback))"\n\n extern async def end(socket: JSSocket): Unit \x3d\n jsNode "$effekt.callcc(callback \x3d\x3e ${socket}.end(callback))"\n}\n\ninterface Socket {\n def send(message: Bytes): Unit\n def receive(): Bytes\n def end(): Unit\n}\n\ndef server(host: String, port: Int, handler: () \x3d\x3e Unit / Socket at {io, async, global}): Unit \x3d {\n val server \x3d js::server();\n js::listen(server, port, host, box { socket \x3d\x3e\n println("New connection")\n spawn(box {\n try handler()\n with Socket {\n def send(message) \x3d\n resume(js::send(socket, message))\n def receive() \x3d\n resume(js::receive(socket))\n def end() \x3d\n resume(js::end(socket))\n }\n })\n })\n}\n\n\nnamespace examples {\n def helloWorldApp(): Unit / Socket \x3d {\n val request \x3d do receive();\n\n println("Received a request: " ++ request.toUTF8)\n\n if (request.toUTF8.startsWith("GET /")) {\n do send(fromUTF8("HTTP/1.1 200 OK\\r\\n\\r\\nHello from Effekt!"))\n } else {\n do send("HTTP/1.1 400 Bad Request\\r\\n\\r\\n".fromUTF8)\n }\n do end()\n }\n\n // A server that just shows "Hello from Effekt!" on localhost:8080\n def main() \x3d {\n val port \x3d 8080\n println("Starting server on http://localhost:" ++ port.show)\n\n server("localhost", port, box {\n helloWorldApp()\n })\n }\n}\n'); +Gv("common/seq.effekt",'module seq\n\n/**\n * This file implements the [[Seq]] type as a general purpose functional sequence.\n *\n * Implemented as a 2-3 finger tree, it supports\n * - prepend and append in amortized O(1),\n * - concat(m, n) in O(log(min(m, n)))\n * - first and last in amortized O(1)\n * - size in amortized O(1)\n *\n * More information on finger trees:\n * https://www.staff.city.ac.uk/~ross/papers/FingerTree.pdf\n */\n\n/**\n * Sequences of elements\n *\n * They are represented as 2-3 finger trees.\n */\ntype Seq[A] {\n Empty()\n Single(value: A)\n Deep(size: Int, prefix: Digit[A], middle: Tree[A], suffix: Digit[A])\n}\n\n/**\n * Result of splitting a sequence at the front or back.\n */\ntype View[A] {\n IsEmpty()\n View(element: A, remainder: Seq[A])\n}\n\n/**\n * Exception[NoSuchElement] is raised when accessing non-existing elements\n * or splitting empty collections.\n */\nrecord NoSuchElement()\n\n\nrecord IndexOutOfBounds()\n\n\n\n// Implementation\n// \x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\n// Internal implementation note:\n// we use the following abbreviations:\n// - s: suffix\n// - p: prefix\n// - v: value\n// - n: node\n// - m: middle (spine)\n// - a,b,c,d: elements of a digit in this order\n//\n// we do not abbreviate:\n// - size\n\n\n// Internal Types\n// --------------\n\n/**\n * Internal grouping of 1-4 elements\n *\n * It is called digit since Okasaki (1998) calls finger trees "numerical operations".\n */\ntype Digit[A] {\n One(value: A)\n Two(first: A, second: A)\n Three(first: A, second: A, third: A)\n Four(first: A, second: A, third: A, fourth: A)\n}\n\n/**\n * Internal representation of a 2-3 tree\n */\ntype Node[A] {\n // These are necessary to avoid polymorphic recursion\n Leaf2(first: A, second: A)\n Leaf3(first: A, second: A, third: A)\n Node2(size: Int, first: Node[A], second: Node[A])\n Node3(size: Int, first: Node[A], second: Node[A], third: Node[A])\n}\n\n/**\n * Internal duplicate of Seq\n *\n * splitting into two type parameters is necessary since our MLton backend does\n * not support mutually recursive data type declarations.\n */\ntype Finger[A, N] {\n NoFinger()\n SingleFinger(value: Node[A])\n DeepFinger(size: Int, prefix: N, middle: Finger[A, N], suffix: N)\n}\n\n/**\n * Internal\n */\ntype Tree[A] \x3d Finger[A, Digit[Node[A]]]\n\n/**\n * Internal\n */\ntype TreeView[A] {\n TreeIsEmpty()\n TreeView(element: Node[A], rest: Tree[A])\n}\n\n\n\n// Measure\n// -------\n\ndef size[A](node: Digit[A]): Int \x3d node match {\n case One(_) \x3d\x3e 1\n case Two(_, _) \x3d\x3e 2\n case Three(_, _, _) \x3d\x3e 3\n case Four(_, _, _, _) \x3d\x3e 4\n}\n\ndef size[A](node: Node[A]): Int \x3d node match {\n case Leaf2(_, _) \x3d\x3e 2\n case Leaf3(_, _, _) \x3d\x3e 3\n case Node2(size, _, _) \x3d\x3e size\n case Node3(size, _, _, _) \x3d\x3e size\n}\n\ndef sizeDeep[A](node: Digit[Node[A]]): Int \x3d node match {\n case One(a) \x3d\x3e a.size\n case Two(a, b) \x3d\x3e a.size + b.size\n case Three(a, b, c) \x3d\x3e a.size + b.size + c.size\n case Four(a, b, c, d) \x3d\x3e a.size + b.size + c.size + d.size\n}\n\ndef size[A](tree: Tree[A]): Int \x3d tree match {\n case NoFinger() \x3d\x3e 0\n case SingleFinger(value) \x3d\x3e value.size\n case DeepFinger(size, _, _, _) \x3d\x3e size\n}\n\n/**\n * The size of the given sequence\n */\ndef size[A](seq: Seq[A]): Int \x3d seq match {\n case Empty() \x3d\x3e 0\n case Single(value) \x3d\x3e 1\n case Deep(size, _, _, _) \x3d\x3e size\n}\n\n\n// Internal smart constructors\n// ---------------------------\n\ndef deepFinger[A](prefix: Digit[Node[A]], middle: Tree[A], suffix: Digit[Node[A]]): Tree[A] \x3d\n DeepFinger(prefix.sizeDeep + middle.size + suffix.sizeDeep, prefix, middle, suffix)\n\ndef deep[A](prefix: Digit[A], middle: Tree[A], suffix: Digit[A]): Seq[A] \x3d\n Deep(prefix.size + middle.size + suffix.size, prefix, middle, suffix)\n\ndef node2[A](first: Node[A], second: Node[A]): Node[A] \x3d\n Node2(first.size + second.size, first, second)\n\ndef node3[A](first: Node[A], second: Node[A], third: Node[A]): Node[A] \x3d\n Node3(first.size + second.size + third.size, first, second, third)\n\n\n// Adding an element to the left\n// -----------------------------\n\ndef consFinger[A](head: Node[A], tail: Tree[A]): Tree[A] \x3d tail match {\n case NoFinger() \x3d\x3e SingleFinger(head)\n case SingleFinger(b) \x3d\x3e deepFinger(One(head), NoFinger(), One(b))\n case DeepFinger(_, One(b), m, s) \x3d\x3e deepFinger(Two(head, b), m, s)\n case DeepFinger(_, Two(b, c), m, s) \x3d\x3e deepFinger(Three(head, b, c), m, s)\n case DeepFinger(_, Three(b, c, d), m, s) \x3d\x3e deepFinger(Four(head, b, c, d), m, s)\n case DeepFinger(_, Four(b, c, d, e), m, s) \x3d\x3e\n deepFinger(Two(head, b), consFinger(node3(c, d, e), m), s)\n}\n\ndef cons[A](head: A, tail: Seq[A]): Seq[A] \x3d tail match {\n case Empty() \x3d\x3e Single(head)\n case Single(b) \x3d\x3e Deep(2, One(head), NoFinger(), One(b))\n case Deep(size, One(b), m, s) \x3d\x3e Deep(size + 1, Two(head, b), m, s)\n case Deep(size, Two(b, c), m, s) \x3d\x3e Deep(size + 1, Three(head, b, c), m, s)\n case Deep(size, Three(b, c, d), m, s) \x3d\x3e Deep(size + 1, Four(head, b, c, d), m, s)\n case Deep(size, Four(b, c, d, e), m, s) \x3d\x3e\n Deep(size + 1, Two(head, b), consFinger(Leaf3(c, d, e), m), s)\n}\n\n\n// Adding an element to the right\n// ------------------------------\n\ndef consFingerRight[A](init: Tree[A], last: Node[A]): Tree[A] \x3d init match {\n case NoFinger() \x3d\x3e SingleFinger(last)\n case SingleFinger(b) \x3d\x3e deepFinger(One(b), NoFinger(), One(last))\n case DeepFinger(_, p, m, One(b)) \x3d\x3e deepFinger(p, m, Two(b, last))\n case DeepFinger(_, p, m, Two(b, c)) \x3d\x3e deepFinger(p, m, Three(b, c, last))\n case DeepFinger(_, p, m, Three(b, c, d)) \x3d\x3e deepFinger(p, m, Four(b, c, d, last))\n case DeepFinger(_, p, m, Four(b, c, d, e)) \x3d\x3e\n deepFinger(p, consFingerRight(m, node3(b, c, d)), Two(e, last))\n}\n\ndef consRight[A](init: Seq[A], last: A): Seq[A] \x3d init match {\n case Empty() \x3d\x3e Single(last)\n case Single(b) \x3d\x3e Deep(2, One(b), NoFinger(), One(last))\n case Deep(size, p, m, One(b)) \x3d\x3e Deep(size + 1, p, m, Two(b, last))\n case Deep(size, p, m, Two(b, c)) \x3d\x3e Deep(size + 1, p, m, Three(b, c, last))\n case Deep(size, p, m, Three(b, c, d)) \x3d\x3e Deep(size + 1, p, m, Four(b, c, d, last))\n case Deep(size, p, m, Four(b, c, d, e)) \x3d\x3e\n Deep(size + 1, p, consFingerRight(m, Leaf3(b, c, d)), Two(e, last))\n}\n\n\n// Splitting the sequence on the left\n// ----------------------------------\n\ndef unconsFinger[A](seq: Tree[A]): TreeView[A] \x3d seq match {\n case NoFinger() \x3d\x3e TreeIsEmpty()\n case SingleFinger(v) \x3d\x3e TreeView(v, NoFinger())\n // TODO this is a tail-call-modulo-context\n case DeepFinger(size, One(a), m, s) \x3d\x3e TreeView(a, unconsFinger(m) match {\n case TreeIsEmpty() \x3d\x3e s.toTree\n case TreeView(b, m2) \x3d\x3e DeepFinger(size - a.size, b.toDigitNode, m2, s)\n })\n case DeepFinger(size, Two(a, b), m, s) \x3d\x3e TreeView(a, DeepFinger(size - a.size, One(b), m, s))\n case DeepFinger(size, Three(a, b, c), m, s) \x3d\x3e TreeView(a, DeepFinger(size - a.size, Two(b, c), m, s))\n case DeepFinger(size, Four(a, b, c, d), m, s) \x3d\x3e TreeView(a, DeepFinger(size - a.size, Three(b, c, d), m, s))\n}\n\n// this could be called "uncons", "first", "front", "head", "popFront", "start", "popStart"\ndef uncons[A](seq: Seq[A]): View[A] \x3d seq match {\n case Empty() \x3d\x3e IsEmpty()\n case Single(v) \x3d\x3e View(v, Empty())\n case Deep(size, One(a), m, s) \x3d\x3e View(a, unconsFinger(m) match {\n case TreeIsEmpty() \x3d\x3e s.toSeq\n case TreeView(b, m2) \x3d\x3e Deep(size - 1, b.toDigit, m2, s)\n })\n case Deep(size, Two(a, b), m, s) \x3d\x3e View(a, Deep(size - 1, One(b), m, s))\n case Deep(size, Three(a, b, c), m, s) \x3d\x3e View(a, Deep(size - 1, Two(b, c), m, s))\n case Deep(size, Four(a, b, c, d), m, s) \x3d\x3e View(a, Deep(size - 1, Three(b, c, d), m, s))\n}\n\ndef head[A](seq: Seq[A]): A / Exception[NoSuchElement] \x3d seq.uncons match {\n case IsEmpty() \x3d\x3e raise(NoSuchElement(), "Calling `head` on empty sequence.")\n case View(element, _) \x3d\x3e element\n}\n\ndef tail[A](seq: Seq[A]): Seq[A] / Exception[NoSuchElement] \x3d seq.uncons match {\n case IsEmpty() \x3d\x3e raise(NoSuchElement(), "Calling `tail` on empty sequence.")\n case View(element, rest) \x3d\x3e rest\n}\n\n\n// Splitting the sequence on the right\n// -----------------------------------\n\ndef unconsRightFinger[A](seq: Tree[A]): TreeView[A] \x3d seq match {\n case NoFinger() \x3d\x3e TreeIsEmpty()\n case SingleFinger(v) \x3d\x3e TreeView(v, NoFinger())\n // TODO this is a tail-call-modulo-context\n case DeepFinger(size, p, m, One(a)) \x3d\x3e TreeView(a, unconsRightFinger(m) match {\n case TreeIsEmpty() \x3d\x3e p.toTree\n case TreeView(b, m2) \x3d\x3e DeepFinger(size - a.size, p, m2, b.toDigitNode)\n })\n case DeepFinger(size, p, m, Two(a, b)) \x3d\x3e TreeView(b, DeepFinger(size - b.size, p, m, One(a)))\n case DeepFinger(size, p, m, Three(a, b, c)) \x3d\x3e TreeView(c, DeepFinger(size - c.size, p, m, Two(a, b)))\n case DeepFinger(size, p, m, Four(a, b, c, d)) \x3d\x3e TreeView(d, DeepFinger(size - d.size, p, m, Three(a, b, c)))\n}\n\n// this could be called "uncons", "first", "front", "head", "popFront", "start", "popStart"\ndef unconsRight[A](seq: Seq[A]): View[A] \x3d seq match {\n case Empty() \x3d\x3e IsEmpty()\n case Single(v) \x3d\x3e View(v, Empty())\n case Deep(size, p, m, One(a)) \x3d\x3e View(a, unconsFinger(m) match {\n case TreeIsEmpty() \x3d\x3e p.toSeq\n case TreeView(b, m2) \x3d\x3e Deep(size - 1, p, m2, b.toDigit)\n })\n case Deep(size, p, m, Two(a, b)) \x3d\x3e View(b, Deep(size - 1, p, m, One(a)))\n case Deep(size, p, m, Three(a, b, c)) \x3d\x3e View(c, Deep(size - 1, p, m, Two(a, b)))\n case Deep(size, p, m, Four(a, b, c, d)) \x3d\x3e View(d, Deep(size - 1, p, m, Three(a, b, c)))\n}\n\n\n// Concatenating Sequences\n// -----------------------\n\ndef concatTree[A](first: Tree[A], middle: List[Node[A]], second: Tree[A]): Tree[A] \x3d {\n\n // can we get rid of the list?\n\n def prepend(nodes: List[Node[A]], tree: Tree[A]): Tree[A] \x3d nodes match {\n case Nil() \x3d\x3e tree\n case Cons(head, tail) \x3d\x3e consFinger(head, prepend(tail, tree))\n }\n\n def append(tree: Tree[A], nodes: List[Node[A]]): Tree[A] \x3d nodes match {\n case Nil() \x3d\x3e tree\n case Cons(head, tail) \x3d\x3e append(consFingerRight(tree, head), tail)\n }\n\n def consFinger(digit: Digit[Node[A]], tree: Tree[A]): Tree[A] \x3d digit match {\n case One(a) \x3d\x3e consFinger(a, tree)\n case Two(a, b) \x3d\x3e consFinger(a, consFinger(b, tree))\n case Three(a, b, c) \x3d\x3e consFinger(a, consFinger(b, consFinger(c, tree)))\n case Four(a, b, c, d) \x3d\x3e consFinger(a, consFinger(b, consFinger(c, consFinger(d, tree))))\n }\n\n def toList(digit: Digit[Node[A]]): List[Node[A]] \x3d digit match {\n case One(a) \x3d\x3e Cons(a, Nil())\n case Two(a, b) \x3d\x3e Cons(a, Cons(b, Nil()))\n case Three(a, b, c) \x3d\x3e Cons(a, Cons(b, Cons(c, Nil())))\n case Four(a, b, c, d) \x3d\x3e Cons(a, Cons(b, Cons(c, Cons(d, Nil()))))\n }\n\n def rebalance(nodes: List[Node[A]]): List[Node[A]] \x3d nodes match {\n case Cons(a, Cons(b, Nil())) \x3d\x3e Cons(node2(a, b), Nil())\n case Cons(a, Cons(b, Cons(c, Nil()))) \x3d\x3e Cons(node3(a, b, c), Nil())\n case Cons(a, Cons(b, Cons(c, Cons(d, Nil())))) \x3d\x3e Cons(node2(a, b), Cons(node2(c, d), Nil()))\n case Cons(a, Cons(b, Cons(c, rest))) \x3d\x3e Cons(node3(a, b, c), rebalance(rest))\n case _ \x3d\x3e \x3c\x3e\n }\n\n def go(prefix: Tree[A], middle: List[Node[A]], suffix: Tree[A]): Tree[A] \x3d\n (prefix, suffix) match {\n case (NoFinger(), s) \x3d\x3e prepend(middle, s)\n case (p, NoFinger()) \x3d\x3e append(p, middle)\n case (SingleFinger(v), s) \x3d\x3e consFinger(v, prepend(middle, s))\n case (p, SingleFinger(v)) \x3d\x3e consFingerRight(append(p, middle), v)\n case (DeepFinger(size1, p1, m1, s1), DeepFinger(size2, p2, m2, s2)) \x3d\x3e\n val list \x3d s1.toList.append(middle).append(p2.toList)\n DeepFinger(size1 + size2, p1, go(m1, rebalance(list), m2), s2)\n }\n\n go(first, middle, second)\n}\n\ndef concat[A](first: Seq[A], second: Seq[A]): Seq[A] \x3d {\n def rebalance(t: List[A]): List[Node[A]] \x3d t match {\n case Cons(a, Cons(b, Nil())) \x3d\x3e Cons(Leaf2(a, b), Nil())\n case Cons(a, Cons(b, Cons(c, Nil()))) \x3d\x3e Cons(Leaf3(a, b, c), Nil())\n case Cons(a, Cons(b, Cons(c, Cons(d, Nil())))) \x3d\x3e Cons(Leaf2(a, b), Cons(Leaf2(c, d), Nil()))\n case Cons(a, Cons(b, Cons(c, rest))) \x3d\x3e Cons(Leaf3(a, b, c), rebalance(rest))\n case _ \x3d\x3e \x3c\x3e\n }\n\n (first, second) match {\n case (Empty(), other) \x3d\x3e other\n case (other, Empty()) \x3d\x3e other\n case (Single(v), other) \x3d\x3e cons(v, other)\n case (other, Single(v)) \x3d\x3e consRight(other, v)\n case (Deep(size1, p1, m1, s1), Deep(size2, p2, m2, s2)) \x3d\x3e\n Deep(size1 + size2, p1, concatTree(m1, rebalance(s1.toList.append(p2.toList)), m2), s2)\n }\n}\n\n\n// Predicates\n// ----------\n\ndef isEmpty[A](seq: Seq[A]): Bool \x3d seq match {\n case Empty() \x3d\x3e true\n case _ \x3d\x3e false\n}\n\ndef nonEmpty[A](seq: Seq[A]): Bool \x3d seq match {\n case Empty() \x3d\x3e false\n case _ \x3d\x3e true\n}\n\ndef reverse[A](seq: Seq[A]): Seq[A] \x3d {\n\n // invariant for all internal functions: element is in the sequence\n\n // this is tail-recursive-modulo-context\n def go(node: Node[A]): Node[A] \x3d node match {\n case Leaf2(a, b) \x3d\x3e Leaf2(b, a)\n case Leaf3(a, b, c) \x3d\x3e Leaf3(c, b, a)\n case Node2(size, a, b) \x3d\x3e Node2(size, go(b), go(a))\n case Node3(size, a, b, c) \x3d\x3e Node3(size, go(c), go(b), go(a))\n }\n def go(digit: Digit[A]): Digit[A] \x3d digit match {\n case One(a) \x3d\x3e One(a)\n case Two(a, b) \x3d\x3e Two(b, a)\n case Three(a, b, c) \x3d\x3e Three(c, b, a)\n case Four(a, b, c, d) \x3d\x3e Four(d, c, b, a)\n }\n def go(digits: Digit[Node[A]]): Digit[Node[A]] \x3d digits match {\n case One(a) \x3d\x3e One(go(a))\n case Two(a, b) \x3d\x3e Two(go(b), go(a))\n case Three(a, b, c) \x3d\x3e Three(go(c), go(b), go(a))\n case Four(a, b, c, d) \x3d\x3e Four(go(d), go(c), go(b), go(a))\n }\n def go(tree: Tree[A]): Tree[A] \x3d tree match {\n case NoFinger() \x3d\x3e NoFinger()\n case SingleFinger(value) \x3d\x3e SingleFinger(go(value))\n case DeepFinger(size, p, m, s) \x3d\x3e DeepFinger(size, go(s), go(m), go(p))\n }\n\n seq match {\n case Empty() \x3d\x3e Empty()\n case Single(value) \x3d\x3e Single(value)\n case Deep(size, p, m, s) \x3d\x3e Deep(size, go(s), go(m), go(p))\n }\n}\n\n\n/**\n * Random access\n */\ndef index[A](seq: Seq[A], index: Int): A / Exception[NoSuchElement] \x3d {\n\n // invariant for all internal functions: element is in the sequence\n\n def go(node: Node[A], index: Int): A \x3d node match {\n case Leaf2(a, b) \x3d\x3e if (index \x3d\x3d 0) a else b\n case Leaf3(a, b, c) \x3d\x3e if (index \x3d\x3d 0) a else if (index \x3d\x3d 1) b else c\n case Node2(_, a, b) \x3d\x3e\n val asize \x3d a.size\n if (index \x3c asize) go(a, index) else go(b, index - asize)\n case Node3(_, a, b, c) \x3d\x3e\n val asize \x3d a.size\n if (index \x3c asize) go(a, index) else {\n val bsize \x3d asize + b.size\n if (index \x3c bsize) go(b, index - asize) else go(c, index - bsize)\n }\n }\n def go(digit: Digit[A], index: Int): A \x3d digit match {\n case One(a) \x3d\x3e a\n case Two(a, b) \x3d\x3e if (index \x3d\x3d 0) a else b\n case Three(a, b, c) \x3d\x3e if (index \x3d\x3d 0) a else if (index \x3d\x3d 1) b else c\n case Four(a, b, c, d) \x3d\x3e if (index \x3d\x3d 0) a else if (index \x3d\x3d 1) b else if (index \x3d\x3d 2) c else d\n }\n def go(digits: Digit[Node[A]], index: Int): A \x3d digits match {\n case One(a) \x3d\x3e go(a, index)\n case Two(a, b) \x3d\x3e\n val asize \x3d a.size\n if (index \x3c asize) go(a, index) else go(b, index - asize)\n case Three(a, b, c) \x3d\x3e\n val asize \x3d a.size\n if (index \x3c asize) go(a, index) else {\n val bsize \x3d asize + b.size\n if (index \x3c bsize) go(b, index - asize) else {\n go(c, index - bsize)\n }\n }\n case Four(a, b, c, d) \x3d\x3e\n val asize \x3d a.size\n if (index \x3c asize) go(a, index) else {\n val bsize \x3d asize + b.size\n if (index \x3c bsize) go(b, index - asize) else {\n val csize \x3d bsize + c.size\n if (index \x3c csize) go(c, index - bsize) else {\n go(d, index - csize)\n }\n }\n }\n }\n def go(tree: Tree[A], index: Int): A \x3d tree match {\n case NoFinger() \x3d\x3e \x3c{ "Cannot happen!" }\x3e\n case SingleFinger(value) \x3d\x3e go(value, index)\n case DeepFinger(_, p, m, s) \x3d\x3e\n val psize \x3d p.sizeDeep\n if (index \x3c psize) { go(p, index) } else {\n val msize \x3d psize + m.size\n if (index \x3c msize) { go(m, index - psize) }\n else { go(s, index - msize) }\n }\n }\n\n if (index \x3e\x3d seq.size) raise(NoSuchElement(), "...")\n else seq match {\n case Empty() \x3d\x3e \x3c{ "Cannot happen!" }\x3e\n case Single(v) \x3d\x3e v // has to be the right one due to the check above\n case Deep(_, p, m, s) \x3d\x3e\n val psize \x3d p.size\n if (index \x3c psize) { go(p, index) } else {\n val msize \x3d psize + m.size\n if (index \x3c msize) { go(m, index - psize) }\n else { go(s, index - msize) }\n }\n }\n}\n\n/**\n * Random access\n */\ndef update[A](seq: Seq[A], index: Int, value: A): Seq[A] / Exception[NoSuchElement] \x3d {\n\n // invariant for all internal functions: element is in the sequence\n\n // this is tail-recursive-modulo-context\n def go(node: Node[A], index: Int): Node[A] \x3d node match {\n case Leaf2(a, b) \x3d\x3e if (index \x3d\x3d 0) Leaf2(value, b) else Leaf2(a, value)\n case Leaf3(a, b, c) \x3d\x3e if (index \x3d\x3d 0) Leaf3(value, b, c) else if (index \x3d\x3d 1) Leaf3(a, value, c) else Leaf3(a, b, value)\n case Node2(size, a, b) \x3d\x3e\n val asize \x3d a.size\n if (index \x3c asize) Node2(size, go(a, index), b) else Node2(size, a, go(b, index - asize))\n case Node3(size, a, b, c) \x3d\x3e\n val asize \x3d a.size\n if (index \x3c asize) Node3(size, go(a, index), b, c) else {\n val bsize \x3d asize + b.size\n if (index \x3c bsize) Node3(size, a, go(b, index - asize), c) else Node3(size, a, b, go(c, index - bsize))\n }\n }\n def go(digit: Digit[A], index: Int): Digit[A] \x3d digit match {\n case One(a) \x3d\x3e One(value)\n case Two(a, b) \x3d\x3e if (index \x3d\x3d 0) Two(value, b) else Two(a, value)\n case Three(a, b, c) \x3d\x3e if (index \x3d\x3d 0) Three(value, b, c) else if (index \x3d\x3d 1) Three(a, value, c) else Three(a, b, value)\n case Four(a, b, c, d) \x3d\x3e if (index \x3d\x3d 0) Four(value, b, c, d) else if (index \x3d\x3d 1) Four(a, value, c, d) else if (index \x3d\x3d 2) Four(a, b, value, d) else Four(a, b, c, value)\n }\n def go(digits: Digit[Node[A]], index: Int): Digit[Node[A]] \x3d digits match {\n case One(a) \x3d\x3e One(go(a, index))\n case Two(a, b) \x3d\x3e\n val asize \x3d a.size\n if (index \x3c asize) Two(go(a, index), b) else Two(a, go(b, index - asize))\n case Three(a, b, c) \x3d\x3e\n val asize \x3d a.size\n if (index \x3c asize) Three(go(a, index), b, c) else {\n val bsize \x3d asize + b.size\n if (index \x3c bsize) Three(a, go(b, index - asize), c) else {\n Three(a, b, go(c, index - bsize))\n }\n }\n case Four(a, b, c, d) \x3d\x3e\n val asize \x3d a.size\n if (index \x3c asize) Four(go(a, index), b, c, d) else {\n val bsize \x3d asize + b.size\n if (index \x3c bsize) Four(a, go(b, index - asize), c, d) else {\n val csize \x3d bsize + c.size\n if (index \x3c csize) Four(a, b, go(c, index - bsize), d) else {\n Four(a, b, c, go(d, index - csize))\n }\n }\n }\n }\n def go(tree: Tree[A], index: Int): Tree[A] \x3d tree match {\n case NoFinger() \x3d\x3e \x3c{ "Cannot happen!" }\x3e\n case SingleFinger(value) \x3d\x3e SingleFinger(go(value, index))\n case DeepFinger(size, p, m, s) \x3d\x3e\n val psize \x3d p.sizeDeep\n if (index \x3c psize) { DeepFinger(size, go(p, index), m, s) } else {\n val msize \x3d psize + m.size\n if (index \x3c msize) { DeepFinger(size, p, go(m, index - psize), s) }\n else { DeepFinger(size, p, m, go(s, index - msize)) }\n }\n }\n\n if (index \x3e\x3d seq.size) raise(NoSuchElement(), "...")\n else seq match {\n case Empty() \x3d\x3e \x3c{ "Cannot happen!" }\x3e\n case Single(_) \x3d\x3e Single(value) // has to be the right one due to the check above\n case Deep(size, p, m, s) \x3d\x3e\n val psize \x3d p.size\n if (index \x3c psize) { Deep(size, go(p, index), m, s) } else {\n val msize \x3d psize + m.size\n if (index \x3c msize) { Deep(size, p, go(m, index - psize), s) }\n else { Deep(size, p, m, go(s, index - msize)) }\n }\n }\n}\n\n\ndef each[A](seq: Seq[A]) { consume: (A) \x3d\x3e Unit }: Unit \x3d {\n\n def go(digit: Digit[A]): Unit \x3d digit match {\n case One(a) \x3d\x3e consume(a)\n case Two(a, b) \x3d\x3e consume(a); consume(b)\n case Three(a, b, c) \x3d\x3e consume(a); consume(b); consume(c)\n case Four(a, b, c, d) \x3d\x3e consume(a); consume(b); consume(c); consume(d)\n }\n\n def go(node: Node[A]): Unit \x3d node match {\n case Leaf2(a, b) \x3d\x3e consume(a); consume(b)\n case Leaf3(a, b, c) \x3d\x3e consume(a); consume(b); consume(c)\n case Node2(_, a, b) \x3d\x3e go(a); go(b)\n case Node3(_, a, b, c) \x3d\x3e go(a); go(b); go(c)\n }\n\n def go(digit: Digit[Node[A]]): Unit \x3d digit match {\n case One(a) \x3d\x3e go(a)\n case Two(a, b) \x3d\x3e go(a); go(b)\n case Three(a, b, c) \x3d\x3e go(a); go(b); go(c)\n case Four(a, b, c, d) \x3d\x3e go(a); go(b); go(c); go(d)\n }\n\n def go(tree: Tree[A]): Unit \x3d tree match {\n case NoFinger() \x3d\x3e ()\n case SingleFinger(v) \x3d\x3e go(v)\n case DeepFinger(_, p, m, s) \x3d\x3e go(p); go(m); go(s)\n }\n\n seq match {\n case Empty() \x3d\x3e ()\n case Single(v) \x3d\x3e consume(v)\n case Deep(_, p, m, s) \x3d\x3e go(p); go(m); go(s)\n }\n}\n\ndef each[A](seq: Seq[A]) { f: (A) {Control} \x3d\x3e Unit }: Unit \x3d try {\n seq.each { (el) \x3d\x3e\n try { f(el) {inner} } with inner: Control {\n def break() \x3d outer.break()\n def continue() \x3d ()\n }\n }\n} with outer: Control {\n def break() \x3d ()\n def continue() \x3d ()\n}\n\ndef eachReverse[A](seq: Seq[A]) { consume: A \x3d\x3e Unit }: Unit \x3d {\n\n def go(digit: Digit[A]): Unit \x3d digit match {\n case One(a) \x3d\x3e consume(a)\n case Two(a, b) \x3d\x3e consume(b); consume(a)\n case Three(a, b, c) \x3d\x3e consume(c); consume(b); consume(a)\n case Four(a, b, c, d) \x3d\x3e consume(d); consume(c); consume(b); consume(a)\n }\n\n def go(node: Node[A]): Unit \x3d node match {\n case Leaf2(a, b) \x3d\x3e consume(b); consume(a)\n case Leaf3(a, b, c) \x3d\x3e consume(c); consume(b); consume(a)\n case Node2(_, a, b) \x3d\x3e go(b); go(a)\n case Node3(_, a, b, c) \x3d\x3e go(c); go(b); go(a)\n }\n\n def go(digit: Digit[Node[A]]): Unit \x3d digit match {\n case One(a) \x3d\x3e go(a)\n case Two(a, b) \x3d\x3e go(b); go(a)\n case Three(a, b, c) \x3d\x3e go(c); go(b); go(a)\n case Four(a, b, c, d) \x3d\x3e go(d); go(c); go(b); go(a)\n }\n\n def go(tree: Tree[A]): Unit \x3d tree match {\n case NoFinger() \x3d\x3e ()\n case SingleFinger(v) \x3d\x3e go(v)\n case DeepFinger(_, p, m, s) \x3d\x3e go(s); go(m); go(p)\n }\n\n seq match {\n case Empty() \x3d\x3e ()\n case Single(v) \x3d\x3e consume(v)\n case Deep(_, p, m, s) \x3d\x3e go(s); go(m); go(p)\n }\n}\n\ndef eachReverse[A](seq: Seq[A]) { f: (A) {Control} \x3d\x3e Unit }: Unit \x3d try {\n seq.eachReverse { (el) \x3d\x3e\n try { f(el) {inner} } with inner: Control {\n def break() \x3d outer.break()\n def continue() \x3d ()\n }\n }\n} with outer: Control {\n def break() \x3d ()\n def continue() \x3d ()\n}\n\ndef toList[A](seq: Seq[A]): List[A] \x3d {\n var list: List[A] \x3d Nil()\n seq.eachReverse { el \x3d\x3e list \x3d Cons(el, list) }\n list\n}\n\ndef toSeq[A](l: List[A]): Seq[A] \x3d {\n def go(l: List[A], acc: Seq[A]): Seq[A] \x3d l match {\n case Nil() \x3d\x3e acc\n case Cons(head, tail) \x3d\x3e go(tail, consRight(acc, head))\n }\n go(l, Empty())\n}\n\n\nrecord Split[A, R](prefix: R, element: A, suffix: R)\n\ndef splitAt[A](seq: Seq[A], index: Int): (Seq[A], Seq[A]) / Exception[IndexOutOfBounds] \x3d {\n\n // invariant index is in digit\n def go(digit: Digit[A], index: Int): Split[A, List[A]] \x3d digit match {\n case One(a) \x3d\x3e Split([], a, [])\n case Two(a, b) \x3d\x3e if (index \x3d\x3d 0) Split([], a, [b]) else Split([a], b, [])\n case Three(a, b, c) \x3d\x3e\n if (index \x3d\x3d 0) Split([], a, [b, c])\n else if (index \x3d\x3d 1) Split([a], b, [c])\n else Split([a, b], c, [])\n case Four(a, b, c, d) \x3d\x3e\n if (index \x3d\x3d 0) Split([], a, [b, c, d])\n else if (index \x3d\x3d 1) Split([a], b, [c, d])\n else if (index \x3d\x3d 2) Split([a, b], c, [d])\n else Split([a, b, c], d, [])\n }\n\n def go(digit: Digit[Node[A]], index: Int): Split[Node[A], List[Node[A]]] \x3d digit match {\n case One(a) \x3d\x3e Split([], a, [])\n case Two(a, b) \x3d\x3e\n val asize \x3d a.size\n if (index \x3c asize) Split([], a, [b]) else Split([a], b, [])\n case Three(a, b, c) \x3d\x3e\n val asize \x3d a.size\n if (index \x3c asize) Split([], a, [b, c])\n else {\n val bsize \x3d asize + b.size\n if (index \x3c bsize) Split([a], b, [c])\n else Split([a, b], c, [])\n }\n case Four(a, b, c, d) \x3d\x3e\n val asize \x3d a.size\n if (index \x3c asize) Split([], a, [b, c, d])\n else {\n val bsize \x3d asize + b.size\n if (index \x3c bsize) Split([a], b, [c, d])\n else {\n val csize \x3d bsize + c.size\n if (index \x3c csize) Split([a, b], c, [d])\n else Split([a, b, c], d, [])\n }\n }\n }\n\n def left(p: List[Node[A]], m: Tree[A], s: Digit[Node[A]]): Tree[A] \x3d p match {\n case Nil() \x3d\x3e m.unconsFinger match {\n case TreeIsEmpty() \x3d\x3e s.toTree\n case TreeView(a, m2) \x3d\x3e deepFinger(a.toDigitNode, m2, s)\n }\n case _ \x3d\x3e deepFinger(p.toDigitNode, m, s)\n }\n\n def left(p: List[A], m: Tree[A], s: Digit[A]): Seq[A] \x3d p match {\n case Nil() \x3d\x3e m.unconsFinger match {\n case TreeIsEmpty() \x3d\x3e s.toSeq\n case TreeView(a, m2) \x3d\x3e deep(a.toDigit, m2, s)\n }\n case _ \x3d\x3e deep(p.toDigitNode, m, s)\n }\n def right(p: Digit[A], m: Tree[A], s: List[A]): Seq[A] \x3d s match {\n case Nil() \x3d\x3e m.unconsRightFinger match {\n case TreeIsEmpty() \x3d\x3e p.toSeq\n case TreeView(a, m2) \x3d\x3e deep(p, m2, a.toDigit)\n }\n case _ \x3d\x3e deep(p, m, s.toDigitNode)\n }\n\n\n def right(p: Digit[Node[A]], m: Tree[A], s: List[Node[A]]): Tree[A] \x3d s match {\n case Nil() \x3d\x3e m.unconsRightFinger match {\n case TreeIsEmpty() \x3d\x3e p.toTree\n case TreeView(a, m2) \x3d\x3e deepFinger(p, m2, a.toDigitNode)\n }\n case _ \x3d\x3e deepFinger(p, m, s.toDigitNode)\n }\n\n def go(tree: Tree[A], index: Int): Split[Node[A], Tree[A]] \x3d tree match {\n case NoFinger() \x3d\x3e println("Cannot happen!"); \x3c{ "Cannot happen!" }\x3e\n case SingleFinger(value) \x3d\x3e Split(NoFinger(), value, NoFinger())\n case DeepFinger(size, p, m, s) \x3d\x3e\n val psize \x3d p.sizeDeep;\n // It is in the prefix\n if (index \x3c psize) {\n val Split(pp, v, ps) \x3d go(p, index);\n Split(pp.toTree, v, left(ps, m, s))\n } else {\n val msize \x3d psize + m.size\n // It is somewhere in the spine\n if (index \x3c msize) {\n val Split(mp, v, ms) \x3d go(m, index - psize);\n val mpsize \x3d psize + mp.size;\n val Split(vp, w, vs) \x3d go(v.toDigitNode, index - mpsize);\n Split(right(p, mp, vp), w, left(vs, ms, s))\n // It is somewhere in the suffix\n } else {\n val Split(sp, v, ss) \x3d go(s, index - msize)\n Split(right(p, m, sp), v, ss.toTree)\n }\n }\n }\n\n if (index \x3c 0) {\n do raise(IndexOutOfBounds(), "...")\n } else if (index \x3e\x3d seq.size) {\n (seq, Empty())\n } else seq match {\n case Empty() \x3d\x3e (Empty(), Empty())\n case Single(v) \x3d\x3e (Empty(), seq)\n case Deep(size, p, m, s) \x3d\x3e\n val psize \x3d p.size;\n // It is in the prefix\n if (index \x3c psize) {\n val Split(pp, v, ps) \x3d go(p, index);\n (toSeq(pp), left(Cons(v, ps), m, s))\n } else {\n val msize \x3d psize + m.size\n // It is somewhere in the spine\n if (index \x3c msize) {\n val Split(mp, v, ms) \x3d go(m, index - psize);\n val mpsize \x3d psize + mp.size;\n val Split(vp, w, vs) \x3d go(v.toDigit, index - mpsize);\n (right(p, mp, vp), left(Cons(w, vs), ms, s))\n // It is somewhere in the suffix\n } else {\n val Split(sp, v, ss) \x3d go(s, index - msize);\n (right(p, m, sp), Cons(v, ss).toSeq)\n }\n }\n }\n}\n\n\ndef insert[A](seq: Seq[A], value: A, index: Int): Seq[A] / Exception[IndexOutOfBounds] \x3d\n splitAt(seq, index) match {\n case (prefix, suffix) \x3d\x3e prefix.concat(cons(value, suffix))\n }\n\n\n\n// Internal conversions\n// --------------------\n\ndef toTree[A](digit: Digit[Node[A]]): Tree[A] \x3d digit match {\n case One(a) \x3d\x3e SingleFinger(a)\n case Two(a, b) \x3d\x3e deepFinger(One(a), NoFinger(), One(b))\n case Three(a, b, c) \x3d\x3e deepFinger(Two(a, b), NoFinger(), One(c))\n case Four(a, b, c, d) \x3d\x3e deepFinger(Three(a, b, c), NoFinger(), One(d))\n}\n\ndef toTree[A](digit: List[Node[A]]): Tree[A] \x3d digit match {\n case Nil() \x3d\x3e NoFinger()\n case Cons(a, Nil()) \x3d\x3e SingleFinger(a)\n case Cons(a, Cons(b, Nil())) \x3d\x3e deepFinger(One(a), NoFinger(), One(b))\n case Cons(a, Cons(b, Cons(c, Nil()))) \x3d\x3e deepFinger(Two(a, b), NoFinger(), One(c))\n case Cons(a, Cons(b, Cons(c, Cons(d, Nil())))) \x3d\x3e deepFinger(Three(a, b, c), NoFinger(), One(d))\n case _ \x3d\x3e \x3c\x3e\n}\n\ndef toSeq[A](d: Digit[A]): Seq[A] \x3d d match {\n case One(a) \x3d\x3e Single(a)\n case Two(a, b) \x3d\x3e Deep(2, One(a), NoFinger(), One(b))\n case Three(a, b, c) \x3d\x3e Deep(3, Two(a, b), NoFinger(), One(c))\n case Four(a, b, c, d) \x3d\x3e Deep(4, Three(a, b, c), NoFinger(), One(d))\n}\n\ndef toDigitNode[A](n: Node[A]): Digit[Node[A]] \x3d n match {\n case Node2(_, a, b) \x3d\x3e Two(a, b)\n case Node3(_, a, b, c) \x3d\x3e Three(a, b, c)\n case _ \x3d\x3e \x3c{ "Should not happen" }\x3e\n}\n\ndef toDigitNode[A](n: List[A]): Digit[A] \x3d n match {\n case Cons(a, Nil()) \x3d\x3e One(a)\n case Cons(a, Cons(b, Nil())) \x3d\x3e Two(a, b)\n case Cons(a, Cons(b, Cons(c, Nil()))) \x3d\x3e Three(a, b, c)\n case Cons(a, Cons(b, Cons(c, Cons(d, Nil())))) \x3d\x3e Four(a, b, c, d)\n case _ \x3d\x3e \x3c{ "Should not happen" }\x3e\n}\n\ndef toDigit[A](n: Node[A]): Digit[A] \x3d n match {\n case Leaf2(a, b) \x3d\x3e Two(a, b)\n case Leaf3(a, b, c) \x3d\x3e Three(a, b, c)\n case _ \x3d\x3e \x3c{ "Should not happen" }\x3e\n}\n\ndef toList[A](digit: Digit[A]): List[A] \x3d digit match {\n case One(a) \x3d\x3e Cons(a, Nil())\n case Two(a, b) \x3d\x3e Cons(a, Cons(b, Nil()))\n case Three(a, b, c) \x3d\x3e Cons(a, Cons(b, Cons(c, Nil())))\n case Four(a, b, c, d) \x3d\x3e Cons(a, Cons(b, Cons(c, Cons(d, Nil()))))\n}\n\ndef map[A, B](seq: Seq[A]) { f: A \x3d\x3e B }: Seq[B] \x3d {\n var result: Seq[B] \x3d Empty()\n seq.each { a \x3d\x3e result \x3d result.consRight(f(a)) }\n result\n}\n\ndef map[A, B](seq: Seq[A]) { f: (A) {Control} \x3d\x3e B }: Seq[B] \x3d {\n var result: Seq[B] \x3d Empty()\n seq.each { (a) {label} \x3d\x3e result \x3d result.consRight(f(a) {label}) }\n result\n}\n\n\n// TODO iterator interface\n//\n\n// interface Iterator[A] {\n// def value(): Option[A]\n// def next(): Unit\n// }\n\n// interface Generator[A] {\n// def yield(value: A): Unit\n// }\n\n// def iterate[A, R](seq: Seq[A]) { prog: {Iterator[A]} \x3d\x3e R }: R \x3d {\n\n// var k: Unit \x3d\x3e Unit at {} \x3d fun(unit: Unit) { () }\n// var v: Option[A] \x3d None()\n\n// try { seq.each { el \x3d\x3e do yield(el) } } with Generator[A] {\n// def yield(value) \x3d { v \x3d Some(value); k \x3d box resume }\n// }\n\n// new Iterator[A] {\n// def value() \x3d v\n// def next() \x3d (unbox k)(())\n// }\n// }\n\n\n// TODO equality comparison\n//'); Gv("common/test.effekt",'import string\nimport process\n\ninterface Assertion {\n def assert(condition: Bool, msg: String): Unit\n}\n\ndef assertTrue(condition: Bool, msg: String) \x3d\n do assert(condition, msg)\n\ndef assertTrue(condition: Bool) \x3d\n do assert(condition, "Assertion failed")\n\ndef assertFalse(condition: Bool, msg: String) \x3d\n do assert(not(condition), msg)\n\ndef assertFalse(condition: Bool) \x3d\n do assert(not(condition), "Assertion failed")\n\ndef assert(obtained: Int, expected: Int, msg: String): Unit / Assertion \x3d\n assertEqual(obtained, expected, msg) { (x, y) \x3d\x3e x \x3d\x3d y }\n\ndef assert(obtained: Bool, expected: Bool, msg: String): Unit / Assertion \x3d\n assertEqual(obtained, expected, msg) { (x, y) \x3d\x3e x \x3d\x3d y }\n\ndef assert(obtained: Char, expected: Char, msg: String): Unit / Assertion \x3d\n assertEqual(obtained, expected, msg) { (x, y) \x3d\x3e x \x3d\x3d y }\n\ndef assert(obtained: String, expected: String, msg: String): Unit / Assertion \x3d\n assertEqual(obtained, expected, msg) { (x, y) \x3d\x3e x \x3d\x3d y }\n\ndef assert(obtained: Int, expected: Int): Unit / Assertion \x3d\n assertEqual(obtained, expected) { (x, y) \x3d\x3e x \x3d\x3d y } { x \x3d\x3e show(x) }\n\ndef assert(obtained: Bool, expected: Bool): Unit / Assertion \x3d\n assertEqual(obtained, expected) { (x, y) \x3d\x3e x \x3d\x3d y } { x \x3d\x3e show(x) }\n\ndef assert(obtained: Char, expected: Char): Unit / Assertion \x3d\n assertEqual(obtained, expected) { (x, y) \x3d\x3e x \x3d\x3d y } { x \x3d\x3e show(x) }\n\ndef assert(obtained: String, expected: String): Unit / Assertion \x3d\n assertEqual(obtained, expected) { (x, y) \x3d\x3e x \x3d\x3d y } { x \x3d\x3e show(x) }\n\ndef assertEqual[A](obtained: A, expected: A, msg: String): Unit / Assertion \x3d\n assertEqual(obtained, expected, msg) { (x, y) \x3d\x3e x.equals(y) }\n\ndef assertEqual[A](obtained: A, expected: A): Unit / Assertion \x3d\n assertEqual(obtained, expected) { (x, y) \x3d\x3e x.equals(y) } { x \x3d\x3e x.genericShow }\n\ndef assertEqual[A](obtained: A, expected: A, msg: String) { equals: (A, A) \x3d\x3e Bool }: Unit / Assertion \x3d\n do assert(equals(obtained, expected), msg)\n\ndef assertEqual[A](obtained: A, expected: A) { equals: (A, A) \x3d\x3e Bool } { show: A \x3d\x3e String }: Unit / Assertion \x3d\n do assert(equals(obtained, expected), "Obtained: " ++ show(obtained) ++ "\\n but expected:" ++ show(expected))\n\n\ninterface Test {\n def success(name: String): Unit\n def failure(name: String, msg: String): Unit\n}\n\ndef test(name: String) { body: \x3d\x3e Unit / Assertion } \x3d\n try { body(); do success(name) } with Assertion {\n def assert(condition, msg) \x3d if (condition) resume(()) else do failure(name, msg)\n }\n\ndef suite(name: String) { body: \x3d\x3e Unit / Test }: Bool \x3d {\n println("Running suite: " ++ name);\n var failed \x3d 0\n var passed \x3d 0\n\n try { body() } with Test {\n def success(name) \x3d {\n passed \x3d passed + 1\n println(ANSI::GREEN ++ "+ " ++ name ++ "" ++ ANSI::RESET);\n resume(())\n }\n def failure(name, msg) \x3d {\n failed \x3d failed + 1\n println(ANSI::RED ++ "- (FAIL) " ++ name ++ "\\n " ++ msg ++ ANSI::RESET);\n resume(())\n }\n }\n if (failed \x3e 0) {\n println(ANSI::RED ++ "Some tests failed (" ++ passed.show ++ " passed, " ++ failed.show ++ " failed)" ++ ANSI::RESET)\n false\n } else {\n println(ANSI::GREEN ++ "All tests passed (" ++ passed.show ++ " passed)" ++ ANSI::RESET)\n true\n }\n}\n\n/// Use as `def main() \x3d mainSuite("...") { ... }`\ndef mainSuite(name: String) { body: \x3d\x3e Unit / Test }: Unit \x3d {\n val result \x3d suite(name) { body() }\n val exitCode \x3d if (result) 0 else 1\n exit(exitCode)\n}\n'); +Gv("common/buffer.effekt",'module buffer\n\nimport array\n\n// TODO (in Effekt compiler)\n// - [ ] fix allocating into actually global region\n// - [ ] fix exceptions on objects\n// - [X] allow omitting braces after `at` for singleton regions\n\nrecord BufferOverflow()\n\n/**\n * Fixed-size ring buffers (queues) where one can write\n * elements to the head and read from the tail.\n */\ninterface Buffer[T] {\n /**\n * The remaining capacity\n */\n def capacity(): Int\n\n /**\n * Is this buffer full?\n */\n def full?(): Bool\n\n /**\n * Is this buffer empty?\n */\n def empty?(): Bool\n\n /**\n * Read an element from the tail of the buffer\n */\n def read(): Option[T]\n\n /**\n * Write an element to the head of the buffer\n */\n def write(el: T): Unit / Exception[BufferOverflow]\n}\n\ndef emptyBuffer[T](capacity: Int): Buffer[T] at {global} \x3d {\n if (capacity \x3d\x3d 1) refBuffer()\n else arrayBuffer(capacity)\n}\ndef arrayBuffer[T](initialCapacity: Int): Buffer[T] at {global} \x3d {\n // TODO allocate buffer (and array) into a region r.\n val contents \x3d emptyArray[T](initialCapacity)\n var head in global \x3d 0\n var tail in global \x3d 0\n\n def size(): Int \x3d\n if (tail \x3e\x3d head) { tail - head }\n else { initialCapacity - head + tail }\n\n def capacity(): Int \x3d initialCapacity - size()\n\n def buffer \x3d new Buffer[T] {\n def capacity() \x3d capacity()\n def full?() \x3d capacity() \x3c\x3d 0\n def empty?() \x3d size() \x3c\x3d 0\n def read() \x3d {\n if (buffer.empty?) None()\n else {\n val result: T \x3d contents.remove(head).getOrElse { \x3c\x3e };\n head \x3d mod(head + 1, initialCapacity)\n Some(result)\n }\n }\n def write(el: T) \x3d {\n if (buffer.full?) \x3c\x3e // raise(BufferOverflow())\n\n contents.put(tail, el)\n tail \x3d mod(tail + 1, initialCapacity)\n }\n }\n buffer\n}\ndef refBuffer[T](): Buffer[T] at {global} \x3d {\n var content: Option[T] in global \x3d None()\n new Buffer[T] {\n def capacity() \x3d if (content.isEmpty) 1 else 0\n def full?() \x3d content.isDefined\n def empty?() \x3d isEmpty(content)\n def read() \x3d {\n val res \x3d content\n content \x3d None()\n res\n }\n def write(el: T) \x3d content match {\n case Some(v) \x3d\x3e\n \x3c\x3e // do raise(BufferOverflow(), "Cannot read element from buffer")\n case None() \x3d\x3e\n content \x3d Some(el)\n }\n }\n}\n\nnamespace examples {\n def main() \x3d ignore[BufferOverflow] {\n // Buffer with capacity 1\n def b \x3d emptyBuffer[Int](1);\n println(b.capacity);\n println(b.full?);\n\n b.write(17);\n println(b.read());\n\n // buffer with capacity 3\n def ringbuffer \x3d emptyBuffer[Int](3);\n ringbuffer.write(1);\n ringbuffer.write(2);\n println(ringbuffer.read());\n ringbuffer.write(3);\n println(ringbuffer.read());\n println(ringbuffer.read());\n ringbuffer.write(4);\n ringbuffer.write(5);\n println(ringbuffer.read());\n println(ringbuffer.read());\n }\n}'); +Gv("common/bytes.effekt",'module bytes\n\n/**\n * A memory managed, mutable, fixed-length buffer of bytes.\n */\nextern type Bytes\n // \x3d llvm "%Pos"\n // \x3d js "Uint8Array"\n\n/**\n * Allocates new bytes with the given `capacity`, setting its values to `0`.\n */\nextern io def bytes(capacity: Int): Bytes \x3d\n js "(new Uint8Array(${capacity}))"\n llvm !!!MULTILINEMARKER!!!\n %buf \x3d call %Pos @c_buffer_construct_uninitialized(i64 ${capacity})\n ret %Pos %buf\n !!!MULTILINEMARKER!!!\n\ndef copy(b: Bytes): Bytes \x3d {\n val len \x3d b.size\n val clone \x3d bytes(len)\n copy(b, clone, 0, 0, len)\n clone\n}\n\nextern io def copy(from: Bytes, to: Bytes, startFrom: Int, startTo: Int, length: Int): Unit \x3d\n js "bytes$copy(${from}, ${to}, ${startFrom}, ${startTo}, ${length})"\n llvm !!!MULTILINEMARKER!!!\n call void @c_buffer_copy(%Pos ${from}, %Pos ${to}, i64 ${startFrom}, i64 ${startTo}, i64 ${length})\n ; return Unit\n ret %Pos zeroinitializer\n !!!MULTILINEMARKER!!!\n\nextern pure def size(b: Bytes): Int \x3d\n js "${b}.length"\n llvm !!!MULTILINEMARKER!!!\n %size \x3d call i64 @c_buffer_length(%Pos ${b})\n ret i64 %size\n !!!MULTILINEMARKER!!!\n\nextern io def read(b: Bytes, index: Int): Byte \x3d\n js "(${b})[${index}]"\n llvm !!!MULTILINEMARKER!!!\n %byte \x3d call i8 @c_buffer_index(%Pos ${b}, i64 ${index})\n ret i8 %byte\n !!!MULTILINEMARKER!!!\n\n// TODO should return the number of bytes written.\nextern io def write(b: Bytes, index: Int, value: Byte): Unit \x3d\n js "bytes$set(${b}, ${index}, ${value})"\n llvm !!!MULTILINEMARKER!!!\n call void @c_buffer_set(%Pos ${b}, i64 ${index}, i8 ${value})\n ; return Unit\n ret %Pos zeroinitializer\n !!!MULTILINEMARKER!!!\n\n/**\n * Returns an *aliased* slice of b starting at offset with the given length\n */\ndef slice(b: Bytes, offset: Int, length: Int): Bytes \x3d {\n def validOffset() \x3d offset \x3e\x3d 0 \x26\x26 offset \x3c b.size\n def validLength() \x3d length \x3e\x3d 0 \x26\x26 (offset + length) \x3c\x3d b.size\n if (validOffset() \x26\x26 validLength()) unsafe::slice(b, offset, length)\n else panic("Invalid slice of bytes (size: " ++ b.size.show ++ ", offset: " ++ offset.show ++ ", length: " ++ length.show ++ ")")\n}\n\n\n/**\n * Returns a view into the buffer, with the length truncated to n\n */\ndef truncated(b: Bytes, n: Int): Bytes \x3d\n b.slice(0, n)\n\nextern pure def fromUTF8(s: String): Bytes \x3d\n js "(new TextEncoder().encode(${s}))"\n llvm !!!MULTILINEMARKER!!!\n %copy \x3d call %Pos @c_buffer_clone(%Pos ${s})\n ret %Pos %copy\n !!!MULTILINEMARKER!!!\n\nextern pure def toUTF8(b: Bytes): String \x3d\n js "(new TextDecoder(\'utf-8\').decode(${b}))"\n // assuming the buffer is already in UTF-8\n llvm !!!MULTILINEMARKER!!!\n %copy \x3d call %Pos @c_buffer_clone(%Pos ${b})\n ret %Pos %copy\n !!!MULTILINEMARKER!!!\n\nnamespace unsafe {\n /**\n * Unsafe: offset and length are not checked.\n */\n extern io def slice(b: Bytes, offset: Int, length: Int): Bytes \x3d\n js "new Uint8Array(${b}.buffer, ${offset}, ${length})"\n llvm !!!MULTILINEMARKER!!!\n %buf \x3d call %Pos @c_buffer_slice(%Pos ${b}, i64 ${offset}, i64 ${length})\n ret %Pos %buf\n !!!MULTILINEMARKER!!!\n\n}\n\n\nextern js !!!MULTILINEMARKER!!!\n function bytes$set(bytes, index, value) {\n bytes[index] \x3d value;\n return $effekt.unit;\n }\n\n function bytes$clone(original) {\n let copy \x3d new Uint8Array(original.length);\n copy.set(original);\n return copy;\n }\n\n function bytes$copy(from, to, startFrom, startTo, length) {\n // Check bounds\n if (startFrom + length \x3e from.length || startTo + length \x3e to.length) {\n throw new RangeError(\'Index out of bounds\');\n }\n\n // Create a subarray of \'from\' and set it into \'to\'\n to.set(from.subarray(startFrom, startFrom + length), startTo);\n}\n!!!MULTILINEMARKER!!!\n'); +Gv("common/array.effekt",'module array\n\nimport effekt\nimport exception\nimport list\n\n/**\n * A mutable 0-indexed fixed-sized array.\n */\nextern type Array[T]\n\n/**\n * Allocates a new array of size `size`, keeping its values _undefined_.\n * Prefer using `array` constructor instead to ensure that values are defined.\n */\nextern global def allocate[T](size: Int): Array[T] \x3d\n js "(new Array(${size}))"\n chez "(make-vector ${size})" // creates an array filled with 0s on CS\n llvm !!!MULTILINEMARKER!!!\n %z \x3d call %Pos @c_array_new(%Int ${size})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\n/**\n * Creates a new Array of size `size` filled with the value `init`\n */\nextern global def array[T](size: Int, init: T): Array[T] \x3d\n ml "Array.array (${size}, ${init})"\n default {\n val arr \x3d allocate[T](size);\n each(0, size) { i \x3d\x3e\n unsafeSet(arr, i, init)\n };\n arr\n }\n\n/**\n * Converts a List `list` to an Array\n */\ndef fromList[T](list: List[T]): Array[T] \x3d {\n val listSize \x3d list.size();\n val arr \x3d allocate(listSize);\n\n foreachIndex(list) { (i, head) \x3d\x3e\n arr.unsafeSet(i, head)\n }\n return arr;\n}\n\n/**\n * Gets the length of the array in constant time.\n */\nextern pure def size[T](arr: Array[T]): Int \x3d\n js "${arr}.length"\n chez "(vector-length ${arr})"\n ml "Array.length ${arr}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d call %Int @c_array_size(%Pos ${arr})\n ret %Int %z\n !!!MULTILINEMARKER!!!\n\n/**\n * Gets the element of the `arr` at given `index` in constant time.\n * Unchecked Precondition: `index` is in bounds (0 \u2264 index \x3c arr.size)\n *\n * Prefer using `get` instead.\n */\nextern global def unsafeGet[T](arr: Array[T], index: Int): T \x3d\n js "${arr}[${index}]"\n chez "(vector-ref ${arr} ${index})"\n ml "Array.sub (${arr}, ${index})"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d call %Pos @c_array_get(%Pos ${arr}, %Int ${index})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\nextern js !!!MULTILINEMARKER!!!\nfunction array$set(arr, index, value) {\n arr[index] \x3d value;\n return $effekt.unit\n}\n!!!MULTILINEMARKER!!!\n\n /**\n * Sets the element of the `arr` at given `index` to `value` in constant time.\n * Unchecked Precondition: `index` is in bounds (0 \u2264 index \x3c arr.size)\n *\n * Prefer using `set` instead.\n */\nextern global def unsafeSet[T](arr: Array[T], index: Int, value: T): Unit \x3d\n js "array$set(${arr}, ${index}, ${value})"\n chez "(begin (vector-set! ${arr} ${index} ${value}) #f)"\n ml "Array.update (${arr}, ${index}, ${value})"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d call %Pos @c_array_set(%Pos ${arr}, %Int ${index}, %Pos ${value})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\n/**\n * Creates a copy of `arr`\n */\ndef copy[T](arr: Array[T]): Array[T] \x3d {\n with on[OutOfBounds].default { \x3c\x3e }; // should not happen\n val len \x3d arr.size;\n val newArray \x3d allocate[T](len);\n copy[T](arr, 0, newArray, 0, len);\n newArray\n}\n\n/**\n * Copies `length`-many elements from `from` to `to`\n * starting at `start` (in `from`) and `offset` (in `to`)\n */\ndef copy[T](from: Array[T], start: Int, to: Array[T], offset: Int, length: Int): Unit / Exception[OutOfBounds] \x3d {\n val startValid \x3d start \x3e\x3d 0 \x26\x26 start + length \x3c\x3d from.size\n val offsetValid \x3d offset \x3e\x3d 0 \x26\x26 offset + length \x3c\x3d to.size\n\n def go(i: Int, j: Int, length: Int): Unit \x3d\n if (length \x3e 0) {\n to.unsafeSet(j, from.unsafeGet(i))\n go(i + 1, j + 1, length - 1)\n }\n\n if (startValid \x26\x26 offsetValid) go(start, offset, length)\n else do raise(OutOfBounds(), "Array index out of bounds, when copying")\n}\n\n// Derived operations:\n\n/**\n * Gets the element of the `arr` at given `index` in constant time,\n * throwing an `Exception[OutOfBounds]` unless `0 \u2264 index \x3c arr.size`.\n */\ndef get[T](arr: Array[T], index: Int): T / Exception[OutOfBounds] \x3d\n if (index \x3e\x3d 0 \x26\x26 index \x3c arr.size) arr.unsafeGet(index)\n else do raise(OutOfBounds(), "Array index out of bounds: " ++ show(index))\n\n/**\n * Sets the element of the `arr` at given `index` to `value` in constant time,\n * throwing an `Exception[OutOfBounds]` unless `0 \u2264 index \x3c arr.size`.\n */\ndef set[T](arr: Array[T], index: Int, value: T): Unit / Exception[OutOfBounds] \x3d\n if (index \x3e\x3d 0 \x26\x26 index \x3c arr.size) unsafeSet(arr, index, value)\n else do raise(OutOfBounds(), "Array index out of bounds: " ++ show(index))\n\n/**\n * Builds a new Array of size `size` from a computation `index` which gets an index\n * and returns a value that will be on that position in the resulting array\n */\ndef build[T](size: Int) { index: Int \x3d\x3e T }: Array[T] \x3d {\n val arr \x3d allocate[T](size);\n each(0, size) { i \x3d\x3e\n unsafeSet(arr, i, index(i))\n };\n arr\n}\n\n// Utility functions:\n\ndef toList[T](arr: Array[T]): List[T] \x3d {\n var i \x3d arr.size - 1;\n var l \x3d Nil[T]()\n while (i \x3e\x3d 0) {\n l \x3d Cons(arr.unsafeGet(i), l)\n i \x3d i - 1\n }\n l\n}\n\ndef foreach[T](arr: Array[T]){ action: T \x3d\x3e Unit }: Unit \x3d\n each(0, arr.size) { i \x3d\x3e\n val x: T \x3d arr.unsafeGet(i)\n action(x)\n }\n\ndef foreach[T](arr: Array[T]){ action: (T) {Control} \x3d\x3e Unit }: Unit \x3d\n each(0, arr.size) { (i) {label} \x3d\x3e\n val x: T \x3d arr.unsafeGet(i)\n action(x) {label}\n }\n\ndef foreachIndex[T](arr: Array[T]){ action: (Int, T) \x3d\x3e Unit }: Unit \x3d\n each(0, arr.size) { i \x3d\x3e\n val x: T \x3d arr.unsafeGet(i)\n action(i, x)\n }\n\ndef foreachIndex[T](arr: Array[T]){ action: (Int, T) {Control} \x3d\x3e Unit }: Unit \x3d\n each(0, arr.size) { (i) {label} \x3d\x3e\n val x: T \x3d arr.unsafeGet(i)\n action(i, x) {label}\n }\n\ndef sum(list: Array[Int]): Int \x3d {\n var acc \x3d 0\n list.foreach { x \x3d\x3e\n acc \x3d acc + x\n }\n acc\n}\n\n// Show Instances\n// --------------\n\ndef show[A](arr: Array[A]) { showA: A \x3d\x3e String }: String \x3d {\n var output \x3d "Array("\n val lastIndex \x3d arr.size - 1\n\n arr.foreachIndex { (index, a) \x3d\x3e\n if (index \x3d\x3d lastIndex) output \x3d output ++ showA(a)\n else output \x3d output ++ showA(a) ++ ", "\n }\n output \x3d output ++ ")"\n\n output\n}\ndef show(l: Array[Int]): String \x3d show(l) { e \x3d\x3e show(e) }\ndef show(l: Array[Double]): String \x3d show(l) { e \x3d\x3e show(e) }\ndef show(l: Array[Bool]): String \x3d show(l) { e \x3d\x3e show(e) }\ndef show(l: Array[String]): String \x3d show(l) { e \x3d\x3e e }\n\ndef println(l: Array[Int]): Unit \x3d println(show(l))\ndef println(l: Array[Double]): Unit \x3d println(show(l))\ndef println(l: Array[Bool]): Unit \x3d println(show(l))\ndef println(l: Array[String]): Unit \x3d println(show(l))\n'); +Gv("common/ref.effekt",'module ref\n\nimport effekt\n\nextern js !!!MULTILINEMARKER!!!\nfunction set$impl(ref, value) {\n ref.value \x3d value;\n return $effekt.unit;\n}\n!!!MULTILINEMARKER!!!\n\n/**\n * Global, mutable references\n */\nextern type Ref[T]\n\n/**\n * Allocates a new reference of size `size`, keeping its value _undefined_.\n * Prefer using `ref` constructor instead to ensure that the value is defined.\n */\nextern global def allocate[T](): Ref[T] \x3d\n js "{ value: undefined }"\n chez "(box #f)"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d call %Pos @c_ref_fresh(%Pos zeroinitializer)\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\n/**\n * Creates a new reference with the initial value `init`.\n */\nextern global def ref[T](init: T): Ref[T] \x3d\n js "{ value: ${init} }"\n chez "(box ${init})"\n ml "ref ${init}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d call %Pos @c_ref_fresh(%Pos ${init})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\n/**\n * Gets the referenced element of the `ref` in constant time.\n */\nextern global def get[T](ref: Ref[T]): T \x3d\n js "${ref}.value"\n chez "(unbox ${ref})"\n ml "!${ref}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d call %Pos @c_ref_get(%Pos ${ref})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\n/**\n * Sets the referenced element of the `ref` to `value` in constant time.\n */\nextern global def set[T](ref: Ref[T], value: T): Unit \x3d\n js "set$impl(${ref}, ${value})"\n chez "(set-box! ${ref} ${value})"\n ml "${ref} :\x3d ${value}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d call %Pos @c_ref_set(%Pos ${ref}, %Pos ${value})\n ret %Pos %z\n !!!MULTILINEMARKER!!!'); +Gv("common/list.effekt",'module list\n\nimport effekt\nimport option\nimport exception\n\n// Immutable linked list for finite sequences of elements.\ntype List[A] {\n Nil();\n Cons(head: A, tail: List[A])\n}\n\n// Create an empty list.\n//\n// O(1)\ndef empty[A](): List[A] \x3d Nil()\n\n// Create a list with one element.\n//\n// O(1)\ndef singleton[A](x: A): List[A] \x3d Cons(x, Nil())\n\n// Create a list of length `size` where all elements are `default`.\n//\n// O(size)\ndef fill[A](size: Int, default: A): List[A] \x3d {\n build(size) { i \x3d\x3e default }\n}\n\n// Create a list from a function `index` of given `size`.\n//\n// O(size)\ndef build[A](size: Int) { index: Int \x3d\x3e A }: List[A] \x3d {\n var result \x3d empty()\n each(0, size) { i \x3d\x3e\n result \x3d Cons(index(i), result)\n }\n result.reverse\n}\n\n// Check if list is empty.\n//\n// O(1)\ndef isEmpty[A](l: List[A]): Bool \x3d l match {\n case Nil() \x3d\x3e true\n case Cons(a, rest) \x3d\x3e false\n}\n\n// Check if list is nonempty.\n//\n// O(1)\ndef nonEmpty[A](l: List[A]): Bool \x3d l match {\n case Nil() \x3d\x3e false\n case Cons(a, rest) \x3d\x3e true\n}\n\n// Return the first element of a given list.\n// Throws a `MissingValue` exception if it\'s empty.\n//\n// O(1)\ndef head[A](l: List[A]): A / Exception[MissingValue] \x3d l match {\n case Nil() \x3d\x3e do raise(MissingValue(), "Trying to get the head of an empty list")\n case Cons(a, rest) \x3d\x3e a\n}\n\n// Return all elements of a given list except the first element.\n// Throws a `MissingValue` exception if it\'s empty.\n//\n// O(1)\ndef tail[A](l: List[A]): List[A] / Exception[MissingValue] \x3d l match {\n case Nil() \x3d\x3e do raise(MissingValue(), "Trying to get the head of an empty list")\n case Cons(a, rest) \x3d\x3e rest\n}\n\n// Return the first element of a given list.\n// Returns `None()` if it\'s empty.\n//\n// O(1)\ndef headOption[A](l: List[A]): Option[A] \x3d l match {\n case Nil() \x3d\x3e None()\n case Cons(a, rest) \x3d\x3e Some(a)\n}\n\n// Returns the last element of a given list.\n//\n// O(N)\ndef last[A](l: List[A]): A / Exception[MissingValue] \x3d {\n def go(list: List[A]): A \x3d {\n list match {\n case Nil() \x3d\x3e do raise(MissingValue(), "Trying to get the last element of an empty list")\n case Cons(x, Nil()) \x3d\x3e x\n case Cons(x, xs) \x3d\x3e go(xs)\n }\n }\n\n go(l)\n}\n\n// Get the value at given index.\n//\n// O(N)\ndef get[A](list: List[A], index: Int): A / Exception[OutOfBounds] \x3d {\n def go(list: List[A], i: Int): A \x3d {\n list match {\n case Nil() \x3d\x3e do raise(OutOfBounds(), "Trying to get an element outside the bounds of a list")\n case Cons(x, xs) and i \x3d\x3d 0 \x3d\x3e x\n case Cons(x, xs) \x3d\x3e go(xs, i - 1)\n }\n }\n\n go(list, index)\n}\n\n// Traverse a list, applying the given action on every element.\n//\n// O(N)\ndef foreach[A](l: List[A]) { f: (A) \x3d\x3e Unit } : Unit \x3d l match {\n case Nil() \x3d\x3e ()\n case Cons(head, tail) \x3d\x3e f(head); tail.foreach {f}\n}\n\n// Traverse a list, applying the given action on every element.\n//\n// O(N)\ndef foreach[A](l: List[A]) { f: (A) {Control} \x3d\x3e Unit } : Unit \x3d {\n var remainder \x3d l\n loop { {label} \x3d\x3e\n remainder match {\n case Nil() \x3d\x3e label.break()\n case Cons(head, tail) \x3d\x3e\n remainder \x3d tail\n f(head) {label}\n }\n }\n}\n\n// Traverse a list, applying the given action on every element and its (zero-based) index.\n//\n// O(N)\ndef foreachIndex[A](list: List[A]){ f: (Int, A) \x3d\x3e Unit }: Unit \x3d {\n def loop(index: Int, remainder: List[A]): Unit \x3d remainder match {\n case Nil() \x3d\x3e ()\n case Cons(head, tail) \x3d\x3e\n f(index, head);\n loop(index + 1, tail)\n }\n loop(0, list)\n}\n\n// Traverse a list, applying the given action on every element and its (zero-based) index.\n//\n// O(N)\ndef foreachIndex[A](list: List[A]){ f: (Int, A) {Control} \x3d\x3e Unit }: Unit \x3d {\n var remainder \x3d list\n var i \x3d -1\n loop { {label} \x3d\x3e\n remainder match {\n case Nil() \x3d\x3e label.break()\n case Cons(head, tail) \x3d\x3e\n remainder \x3d tail\n i \x3d i + 1\n f(i, head) {label}\n }\n }\n}\n\n// Map a function `f` over elements in a given list.\n//\n// O(N)\ndef map[A, B](l: List[A]) { f: A \x3d\x3e B } : List[B] \x3d {\n var acc \x3d Nil[B]()\n l.foreach { el \x3d\x3e acc \x3d Cons(f(el), acc) }\n acc.reverse\n}\n\n// Map a function `f` over elements in a given list,\n// keeping only the elements for which the function returned `Some(...)`,\n// discarding the elements for which the function returned `None()`.\n//\n// O(N)\ndef collect[A, B](l: List[A]) { f : A \x3d\x3e Option[B] }: List[B] \x3d {\n var acc \x3d Nil[B]()\n l.foreach { a \x3d\x3e\n val optB \x3d f(a)\n optB match {\n case None() \x3d\x3e ();\n case Some(b) \x3d\x3e acc \x3d Cons(b, acc);\n }\n }\n acc.reverse\n}\n\n// Map a function `f` over elements in a given list and concatenate the results.\n//\n// O(N)\ndef flatMap[A, B](l: List[A]) { f : A \x3d\x3e List[B] }: List[B] \x3d {\n var acc \x3d Nil[B]()\n l.foreach { a \x3d\x3e\n val bs \x3d f(a)\n acc \x3d acc.append(bs)\n }\n acc\n}\n\n// Check if predicate is true for all elements of the given list.\n//\n// O(N)\ndef all[A](list: List[A]) { predicate: A \x3d\x3e Bool }: Bool \x3d {\n list match {\n case Cons(x, xs) \x3d\x3e predicate(x) \x26\x26 all(xs) { predicate }\n case Nil() \x3d\x3e true\n }\n}\n\n// Check if predicate is true for at least one element of the given list.\n//\n// O(N)\ndef any[A](list: List[A]) { predicate: A \x3d\x3e Bool }: Bool \x3d {\n list match {\n case Cons(x, xs) \x3d\x3e predicate(x) || any(xs) { predicate }\n case Nil() \x3d\x3e false\n }\n}\n\n// Fold a list using `f`, starting from the left given a starting value.\n//\n// O(N)\ndef foldLeft[A, B](l: List[A], init: B) { f: (B, A) \x3d\x3e B }: B \x3d {\n var acc \x3d init;\n l.foreach { x \x3d\x3e acc \x3d f(acc, x) };\n acc\n}\n\n// Fold a list using `f`, starting from the right given a starting value.\n//\n// O(N)\ndef foldRight[A, B](l: List[A], init: B) { f: (A, B) \x3d\x3e B }: B \x3d {\n var acc \x3d init;\n l.reverse.foreach { x \x3d\x3e acc \x3d f(x, acc) };\n acc\n}\n\n// Sum the elements of the list.\n//\n// O(N)\ndef sum(list: List[Int]): Int \x3d {\n var n \x3d 0;\n list.foreach { x \x3d\x3e n \x3d n + x };\n n\n}\n\n// Calculate the size of the list.\n//\n// O(N)\ndef size[A](l: List[A]): Int \x3d {\n var n \x3d 0;\n l.foreach { _ \x3d\x3e n \x3d n + 1 };\n n\n}\n\n// Reverse the list.\n//\n// O(N)\ndef reverse[A](l: List[A]): List[A] \x3d {\n var res \x3d Nil[A]()\n l.foreach { el \x3d\x3e res \x3d Cons(el, res) }\n res\n}\n\n// Reverse a list `l` and append `other` to it.\n//\n// Example:\n// ```\n// \x3e [1,2,3].reverseOnto([4,5,6])\n// [3,2,1,4,5,6]\n// ```\n//\n// O(|l|)\ndef reverseOnto[A](l: List[A], other: List[A]): List[A] \x3d l match {\n case Nil() \x3d\x3e other\n case Cons(a, rest) \x3d\x3e rest.reverseOnto(Cons(a, other))\n}\n\n// Concatenate list `l` with list `other`:\n//\n// Example:\n// ```\n// \x3e [1,2,3].append([4,5,6])\n// [1,2,3,4,5,6]\n// ```\n//\n// O(N)\ndef append[A](l: List[A], other: List[A]): List[A] \x3d\n l.reverse.reverseOnto(other)\n\n// Flatten a list of lists into a single list.\n//\n// Examples:\n// ```\n// \x3e [[1, 2, 3], [4, 5], [6]].join()\n// [1, 2, 3, 4, 5, 6]\n//\n// \x3e [[]].join()\n// []\n// ```\n//\n// O(N)\ndef join[A](lists: List[List[A]]): List[A] \x3d {\n var acc: List[A] \x3d Nil()\n lists.foreach { list \x3d\x3e\n acc \x3d acc.append(list)\n }\n acc\n}\n\n// Flatten a list of lists into a single list,\n// putting the `between` list in between each list in the input.\n//\n// Examples:\n// ```\n// \x3e [[100], [200, 300], [400]].join([1, 2, 3])\n// [100, 1, 2, 3, 200, 300, 1, 2, 3, 400]\n//\n// \x3e [[]].join([1, 2, 3])\n// []\n// ```\n//\n// O(N)\ndef join[A](lists: List[List[A]], between: List[A]): List[A] \x3d {\n lists match {\n case Nil() \x3d\x3e Nil()\n case Cons(firstList, restOfLists) \x3d\x3e\n firstList.append(\n restOfLists.flatMap { list \x3d\x3e between.append(list)}\n )\n }\n}\n\n// Take the first `n` elements of a given list.\n//\n// Examples:\n// ```\n// \x3e [1, 2, 3].take(2)\n// [1, 2]\n//\n// \x3e [1, 2, 3].take(0)\n// []\n//\n// \x3e [1, 2, 3].take(3)\n// [1, 2, 3]\n//\n// \x3e [1, 2, 3].take(5)\n// [1, 2, 3]\n//\n// \x3e [1, 2, 3].take(-1)\n// []\n// ```\n//\n// O(n)\ndef take[A](l: List[A], n: Int): List[A] \x3d\n if (n \x3c\x3d 0) {\n Nil()\n } else l match {\n case Nil() \x3d\x3e Nil()\n case Cons(a, rest) \x3d\x3e Cons(a, rest.take(n - 1))\n }\n\n// Drop the first `n` elements of a given list.\n//\n// Examples:\n// ```\n// \x3e [1, 2, 3].drop(2)\n// [3]\n//\n// \x3e [1, 2, 3].drop(0)\n// [1, 2, 3]\n//\n// \x3e [1, 2, 3].drop(3)\n// []\n//\n// \x3e [1, 2, 3].drop(5)\n// []\n//\n// \x3e [1, 2, 3].drop(-1)\n// [1, 2, 3]\n// ```\n//\n// O(n)\ndef drop[A](l: List[A], n: Int): List[A] \x3d\n if (n \x3c\x3d 0) {\n l\n } else l match {\n case Nil() \x3d\x3e Nil()\n case Cons(a, rest) \x3d\x3e rest.drop(n - 1)\n }\n\n// Return a slice of a given list from the starting index (inclusive)\n// to the given end index (exclusive).\n//\n// Examples:\n// ```\n// \x3e [1, 2, 3, 4, 5, 6].slice(1, 4)\n// [2, 3, 4]\n//\n// \x3e [1, 2, 3, 4, 5, 6].slice(1, 2)\n// [2]\n//\n// \x3e [1, 2, 3, 4, 5, 6].slice(1, 1)\n// []\n//\n// \x3e [1, 2, 3, 4, 5, 6].slice(4, 1)\n// []\n//\n// \x3e [1, 2, 3, 4, 5, 6].slice(-100, 100)\n// [1, 2, 3, 4, 5, 6]\n// ```\n//\n// O(N)\ndef slice[A](list: List[A], start: Int, stopExclusive: Int): List[A] \x3d {\n val prefix \x3d list.drop(start)\n val length \x3d stopExclusive - start\n prefix.take(length)\n}\n\n// Split the list at given index.\n//\n// Law: `val (l, r) \x3d list.splitAt(i); l.append(r) \x3d\x3d\x3d list`\n//\n// O(N)\ndef splitAt[A](list: List[A], index: Int): (List[A], List[A]) \x3d {\n (list.take(index), list.drop(index))\n}\n\n// Update the element at given index in the list using the `update` function.\n// Returns the original list if the index is out of bounds.\n//\n// See: `modifyAt`\n// Examples:\n// ```\n// \x3e [1, 2, 3].updateAt(1) { n \x3d\x3e n + 100 }\n// [1, 102, 3]\n//\n// \x3e [1, 2, 3].updateAt(10) { n \x3d\x3e n + 100 }\n// [1, 2, 3]\n// ```\n//\n// O(N)\ndef updateAt[A](list: List[A], index: Int) { update: A \x3d\x3e A }: List[A] \x3d {\n list.splitAt(index) match {\n case (left, Cons(x, right)) \x3d\x3e\n left.append(Cons(update(x), right))\n case _ \x3d\x3e list\n }\n}\n\n// Modify the element at given index in the list using the `update` function.\n// Throws `OutOfBounds` if the index is out of bounds.\n//\n// See: `updateAt`\n// Examples:\n// ```\n// \x3e [1, 2, 3].modifyAt(1) { n \x3d\x3e n + 100 }\n// Some([1, 102, 3])\n//\n// \x3e [1, 2, 3].modifyAt(10) { n \x3d\x3e n + 100 }\n// None()\n// ```\n//\n// O(N)\ndef modifyAt[A](list: List[A], index: Int) { update: A \x3d\x3e A }: List[A] / Exception[OutOfBounds] \x3d {\n list.splitAt(index) match {\n case (left, Cons(x, right)) \x3d\x3e\n left.append(Cons(update(x), right))\n case _ \x3d\x3e do raise(OutOfBounds(), "Trying to modify an element outside the bounds of a list")\n }\n}\n\n// Delete the element at given index in the list.\n//\n// Example:\n// ```\n// \x3e [1, 2, 3, 4].deleteAt(1)\n// [1, 3, 4]\n//\n// \x3e [1, 2, 3, 4].deleteAt(-1)\n// [1, 2, 3, 4]\n//\n// \x3e [1, 2, 3, 4].deleteAt(10)\n// [1, 2, 3, 4]\n// ```\n//\n// O(N)\ndef deleteAt[A](list: List[A], index: Int): List[A] \x3d {\n val left \x3d list.slice(0, index)\n val right \x3d list.slice(index + 1, list.size())\n left.append(right)\n}\n\n// Add an element at given index in the list.\n//\n// Examples:\n// ```\n// \x3e [1, 2, 3].insert(-1, 0)\n// [0, 1, 2, 3]\n//\n// \x3e [1, 2, 3].insert(0, 0)\n// [0, 1, 2, 3]\n//\n// \x3e [1, 2, 3].insert(1, 0)\n// [1, 0, 2, 3]\n//\n// \x3e [1, 2, 3].insert(3, 0)\n// [1, 2, 3, 0]\n//\n// \x3e [1, 2, 3].insert(10, 0)\n// [1, 2, 3, 0]\n// ```\n//\n// O(N)\ndef insert[A](list: List[A], index: Int, x: A): List[A] \x3d {\n val (left, right) \x3d list.splitAt(index)\n left.append(Cons(x, right))\n}\n\n// Replace an element at given index in the list.\n// Returns the original list when the index is out of bounds.\n//\n// Examples:\n// ```\n// \x3e [1, 2, 3].replace(0, 42)\n// [42, 2, 3]\n//\n// \x3e [1, 2, 3].replace(-1, 42)\n// [1, 2, 3]\n//\n// \x3e [1, 2, 3].replace(10, 42)\n// [1, 2, 3]\n// ```\n//\n// O(N)\ndef replace[A](list: List[A], index: Int, x: A): List[A] \x3d {\n if (index \x3c 0 || index \x3e\x3d list.size()) {\n list\n } else {\n val left \x3d list.take(index)\n val right \x3d list.drop(index + 1)\n left.append(Cons(x, right))\n }\n}\n\n// Produce a list of pairs from a pair of lists.\n// The length of the result is the minimum of lengths of the two lists.\n//\n// Examples:\n// ```\n// \x3e zip([1, 2, 3], [100, 200, 300])\n// [(1, 100), (2, 200), (3, 300)]\n//\n// \x3e zip([1, 2, 3], Nil[Int]())\n// []\n//\n// \x3e zip(Nil[Int](), [1, 2, 3])\n// []\n//\n// \x3e zip([1, 2, 3], [42])\n// [(1, 42)]\n// ```\n//\n// O(N)\ndef zip[A, B](left: List[A], right: List[B]): List[(A, B)] \x3d {\n def go(acc: List[(A, B)], left: List[A], right: List[B]): List[(A, B)] \x3d {\n (left, right) match {\n case (Cons(a, as), Cons(b, bs)) \x3d\x3e\n val pair \x3d (a, b)\n val newAcc \x3d Cons(pair, acc)\n go(newAcc, as, bs)\n case _ \x3d\x3e acc.reverse\n }\n }\n go(Nil(), left, right)\n}\n\n// Combine two lists with the given function.\n// The length of the result is the minimum of lengths of the two lists.\n//\n// Examples:\n// ```\n// \x3e zipWith([1, 2, 3], [100, 200, 300]) { (a, b) \x3d\x3e a + b }\n// [101, 202, 303]\n//\n// \x3e zipWith([1, 2, 3], Nil[Int]()) { (a, b) \x3d\x3e a + b }\n// []\n//\n// \x3e zipWith(Nil[Int](), [1, 2, 3]) { (a, b) \x3d\x3e a + b }\n// []\n//\n// \x3e zipWith([1, 2, 3], [42]) { (a, b) \x3d\x3e a + b }\n// [43]\n// ```\n//\n// O(N)\ndef zipWith[A, B, C](left: List[A], right: List[B]) { combine : (A, B) \x3d\x3e C }: List[C] \x3d {\n def go(acc: List[C], left: List[A], right: List[B]): List[C] \x3d {\n (left, right) match {\n case (Cons(a, as), Cons(b, bs)) \x3d\x3e\n val result \x3d combine(a, b)\n val newAcc \x3d Cons(result, acc)\n go(newAcc, as, bs)\n case _ \x3d\x3e acc.reverse\n }\n }\n go(Nil(), left, right)\n}\n\n// Produce a pair of lists from a list of pairs.\n//\n// Examples:\n// ```\n// \x3e [(1, 100), (2, 200), (3, 300)].unzip()\n// ([1, 2, 3], [100, 200, 300])\n// ```\n//\n// O(N)\ndef unzip[A, B](pairs: List[(A, B)]): (List[A], List[B]) \x3d {\n pairs match {\n case Nil() \x3d\x3e (Nil(), Nil())\n case Cons((l, r), rest) \x3d\x3e\n val (left, right) \x3d rest.unzip();\n (Cons(l, left), Cons(r, right))\n }\n}\n\n// Partition a given list into two lists.\n// The left list contains the elements that satsify the predicate,\n// the right list contains the elements that do not.\n//\n// O(N)\ndef partition[A](l: List[A]) { pred: A \x3d\x3e Bool }: (List[A], List[A]) \x3d {\n var lefts: List[A] \x3d Nil()\n var rights: List[A] \x3d Nil()\n l.foreach { el \x3d\x3e\n if (pred(el)) {\n lefts \x3d Cons(el, lefts)\n } else {\n rights \x3d Cons(el, rights)\n }\n }\n\n (lefts.reverse, rights.reverse)\n}\n\n// Sort a list using a given comparison function.\n//\n// Note: this implementation is not stacksafe!\n//\n// O(N log N)\ndef sortBy[A](l: List[A]) { compare: (A, A) \x3d\x3e Bool }: List[A] \x3d\n l match {\n case Nil() \x3d\x3e Nil()\n case Cons(pivot, rest) \x3d\x3e\n val (lt, gt) \x3d rest.partition { el \x3d\x3e compare(el, pivot) };\n val leftSorted \x3d sortBy(lt) { (a, b) \x3d\x3e compare(a, b) }\n val rightSorted \x3d sortBy(gt) { (a, b) \x3d\x3e compare(a, b) }\n leftSorted.append(Cons(pivot, rightSorted))\n }\n\ndef sort(l: List[Int]): List[Int] \x3d l.sortBy { (a, b) \x3d\x3e a \x3c b }\ndef sort(l: List[Double]): List[Double] \x3d l.sortBy { (a, b) \x3d\x3e a \x3c b }\n\n// Check if a list is sorted according to the given comparison function.\n//\n// O(N)\ndef isSortedBy[A](list: List[A]) { compare: (A, A) \x3d\x3e Bool }: Bool \x3d {\n def go(list: List[A]): Bool \x3d {\n list match {\n case Nil() \x3d\x3e true\n case Cons(x, Nil()) \x3d\x3e true\n case Cons(x, Cons(y, rest)) \x3d\x3e\n val next \x3d Cons(y, rest) // Future work: Replace this by an @-pattern!\n compare(x, y) \x26\x26 go(next)\n }\n }\n go(list)\n}\n\n\n// Show Instances\n// --------------\n\ndef show[A](l: List[A]) { showA: A \x3d\x3e String }: String \x3d {\n def go(l: List[A]): String \x3d l match {\n case Nil() \x3d\x3e "Nil()"\n case Cons(x, xs) \x3d\x3e "Cons(" ++ showA(x) ++ ", " ++ go(xs) ++ ")"\n }\n go(l)\n}\ndef show(l: List[Int]): String \x3d show(l) { e \x3d\x3e show(e) }\ndef show(l: List[Double]): String \x3d show(l) { e \x3d\x3e show(e) }\ndef show(l: List[Bool]): String \x3d show(l) { e \x3d\x3e show(e) }\ndef show(l: List[String]): String \x3d show(l) { e \x3d\x3e e }\n\ndef println(l: List[Int]): Unit \x3d println(show(l))\ndef println(l: List[Double]): Unit \x3d println(show(l))\ndef println(l: List[Bool]): Unit \x3d println(show(l))\ndef println(l: List[String]): Unit \x3d println(show(l))\n'); Gv("common/effekt.effekt",'module effekt\n\nnamespace js {\n // Runtime\n extern include js "../js/effekt_runtime.js"\n\n // Builtins\n extern include js "../js/effekt_builtins.js"\n}\n\nnamespace chez {\n\n // All Chez Scheme backends\n // ------------------------\n extern include chez "../chez/common/effekt_primitives.ss"\n\n // call/cc based implementation\n // ----------------------------\n extern include chezCallCC "../chez/callcc/seq0.ss"\n extern include chezCallCC "../chez/callcc/tail0.ss"\n extern include chezCallCC "../chez/callcc/effekt.ss"\n\n // CPS implementation\n // ------------------\n extern include chezLift "../chez/lift/effekt.ss"\n\n // Monadic implementation\n // ----------------------\n extern include chezMonadic "../chez/monadic/seq0.ss"\n extern include chezMonadic "../chez/monadic/effekt.ss"\n}\n\nnamespace ml {\n extern include ml "../ml/effekt.sml"\n}\n\nnamespace llvm {\n extern include llvm "../llvm/rts.ll"\n extern include llvm "../llvm/forward-declare-c.ll"\n}\n\n// Showing and debugging\n// \x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\n\nextern def println(value: String): Unit \x3d\n js "$effekt.println(${value})"\n chez "(println_impl ${value})"\n llvm !!!MULTILINEMARKER!!!\n call void @c_io_println_String(%Pos ${value})\n ret %Pos zeroinitializer ; Unit\n !!!MULTILINEMARKER!!!\n ml { print(value); print("\\n") }\n\nextern io def print(value: String): Unit \x3d\n ml "print ${value}"\n\ndef println(value: Int): Unit \x3d println(value.show)\ndef println(value: Unit): Unit \x3d println(value.show)\ndef println(value: Double): Unit \x3d println(value.show)\ndef println(value: Bool): Unit \x3d println(value.show)\ndef println(value: Byte): Unit \x3d println(value.show)\n\nextern pure def show(value: Int): String \x3d\n js "\'\' + ${value}"\n chez "(show-number ${value})"\n ml "show\'int ${value}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d call %Pos @c_buffer_show_Int(%Int ${value})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\ndef show(value: Unit): String \x3d "()"\n\nextern pure def show(value: Double): String \x3d\n js "\'\' + ${value}"\n chez "(show-number ${value})"\n ml "show\'real ${value}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d call %Pos @c_buffer_show_Double(%Double ${value})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\ndef show(value: String): String \x3d\n value\n\ndef show(value: Bool): String \x3d\n if (value) "true" else "false"\n\nextern pure def show(value: Char): String \x3d\n js "String.fromCodePoint(${value})"\n chez "(string (integer-\x3echar ${value}))"\n ml "str (chr ${value})"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d call %Pos @c_buffer_show_Char(%Int ${value})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\nextern pure def show(value: Byte): String \x3d\n llvm !!!MULTILINEMARKER!!!\n %z \x3d call %Pos @c_buffer_show_Byte(i8 ${value})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\nextern pure def genericShow[R](value: R): String \x3d\n js "$effekt.show(${value})"\n chez "(show_impl ${value})"\n\nextern io def inspect[R](value: R): Unit \x3d\n js { println(genericShow(value)) }\n chez { println(genericShow(value)) }\n\n\n// Strings\n// \x3d\x3d\x3d\x3d\x3d\x3d\x3d\nextern pure def infixConcat(s1: String, s2: String): String \x3d\n js "((${s1}) + (${s2}))"\n chez "(string-append ${s1} ${s2})"\n ml "${s1} ^ ${s2}"\n llvm !!!MULTILINEMARKER!!!\n %spz \x3d call %Pos @c_buffer_concatenate(%Pos ${s1}, %Pos ${s2})\n ret %Pos %spz\n !!!MULTILINEMARKER!!!\n\nextern pure def length(str: String): Int \x3d\n js "${str}.length"\n chez "(string-length ${str})"\n ml "String.size ${str}"\n llvm !!!MULTILINEMARKER!!!\n %x \x3d call %Int @c_buffer_length(%Pos ${str})\n call void @erasePositive(%Pos ${str})\n ret %Int %x\n !!!MULTILINEMARKER!!!\n\nextern pure def unsafeSubstring(str: String, from: Int, to: Int): String \x3d\n js "${str}.substring(${from}, ${to})"\n chez "(substring ${str} ${from} ${to})" // potentially raises: "Exception in substring: ..."\n ml "String.extract (${str}, ${from}, SOME (${to} - ${from}))"\n llvm !!!MULTILINEMARKER!!!\n %x \x3d call %Pos @c_buffer_substring(%Pos ${str}, i64 ${from}, i64 ${to})\n ret %Pos %x\n !!!MULTILINEMARKER!!!\n\n\n// Side effecting ops\n// \x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\n\nextern io def random(): Double \x3d\n js "Math.random()"\n chez "(random 1.0)"\n ml "mlRandomReal ()"\n\n// References and state\n// \x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\n// the following type is defined in builtins.scala\n// interface Ref[T] { def get(): T; def put(t: T): Unit }\n// extern io def freshIn[T](t: T) {r: Region}: Ref[T] at {r} \x3d js "r.fresh(${t})"\n// extern io def freshGlobal[T](t: T): Ref[T] at {global} \x3d js "$effekt.fresh(${t})"\n\n\n// Equality\n// \x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\n/**\n * Result of comparison between two objects according to some order:\n *\n * - `Less()` means that the first object is *before* the first in the order,\n * - `Equal()` means that the two objects are the same in the order,\n * - and `Greater()` means that the second object is *before* the first in the order.\n */\ntype Ordering {\n Less();\n Equal();\n Greater()\n}\n\nextern pure def genericCompareImpl[R](x: R, y: R): Int \x3d\n js "$effekt.compare(${x}, ${y})"\n\n // Compares two values of the same type, returning an `Ordering`.\ndef genericCompare[R](x: R, y: R): Ordering \x3d {\n genericCompareImpl(x, y) match {\n case -1 \x3d\x3e Less()\n case 0 \x3d\x3e Equal()\n case 1 \x3d\x3e Greater()\n case _ \x3d\x3e \x3c{ "Impossible: JS comparison returned invalid value!" }\x3e\n }\n}\n\ndef show(o: Ordering): String \x3d o match {\n case Less() \x3d\x3e "Less()"\n case Equal() \x3d\x3e "Equal()"\n case Greater() \x3d\x3e "Greater()"\n}\n\ndef println(o: Ordering): Unit \x3d println(o.show)\n\n\n// Comparison ops\n// \x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\n\n/**\n * Structural equality: Not available in the LLVM backend\n */\nextern pure def equals[R](x: R, y: R): Bool \x3d\n js "$effekt.equals(${x}, ${y})"\n chez "(equal? ${x} ${y})"\n ml "${x} \x3d ${y}"\n\ndef differsFrom[R](x: R, y: R): Bool \x3d\n not(equals(x, y))\n\n// TODO fix this in the pattern matching compiler\nextern pure def infixEq(x: Unit, y: Unit): Bool \x3d\n js "true"\n chez "#t"\n ml "true"\n\nextern pure def infixEq(x: Int, y: Int): Bool \x3d\n js "${x} \x3d\x3d\x3d ${y}"\n chez "(equal? ${x} ${y})"\n ml "${x} \x3d ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d icmp eq %Int ${x}, ${y}\n %fat_z \x3d zext i1 %z to i64\n %adt_boolean \x3d insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixNeq(x: Int, y: Int): Bool \x3d\n js "${x} !\x3d\x3d ${y}"\n chez "(not (equal? ${x} ${y}))"\n ml "${x} \x3c\x3e ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d icmp ne %Int ${x}, ${y}\n %fat_z \x3d zext i1 %z to i64\n %adt_boolean \x3d insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixEq(x: Char, y: Char): Bool \x3d\n js "${x} \x3d\x3d\x3d ${y}"\n chez "(equal? ${x} ${y})"\n ml "${x} \x3d ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d icmp eq %Int ${x}, ${y}\n %fat_z \x3d zext i1 %z to i64\n %adt_boolean \x3d insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixNeq(x: Char, y: Char): Bool \x3d\n js "${x} !\x3d\x3d ${y}"\n chez "(not (equal? ${x} ${y}))"\n ml "${x} \x3c\x3e ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d icmp ne %Int ${x}, ${y}\n %fat_z \x3d zext i1 %z to i64\n %adt_boolean \x3d insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixEq(x: String, y: String): Bool \x3d\n js "${x} \x3d\x3d\x3d ${y}"\n chez "(equal? ${x} ${y})"\n ml "${x} \x3d ${y}"\n llvm !!!MULTILINEMARKER!!!\n %res \x3d call %Pos @c_buffer_eq(%Pos ${x}, %Pos ${y})\n ret %Pos %res\n !!!MULTILINEMARKER!!!\n\ndef infixNeq(x: String, y: String): Bool \x3d not(x \x3d\x3d y)\n\nextern pure def infixEq(x: Bool, y: Bool): Bool \x3d\n js "${x} \x3d\x3d\x3d ${y}"\n chez "(equal? ${x} ${y})"\n ml "${x} \x3d ${y}"\n llvm !!!MULTILINEMARKER!!!\n %slim_x \x3d extractvalue %Pos ${x}, 0\n %slim_y \x3d extractvalue %Pos ${y}, 0\n %slim_z \x3d icmp eq i64 %slim_x, %slim_y\n %fat_z \x3d zext i1 %slim_z to i64\n %adt_boolean \x3d insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixNeq(x: Bool, y: Bool): Bool \x3d\n js "${x} !\x3d\x3d ${y}"\n chez "(not (equal? ${x} ${y}))"\n ml "${x} \x3c\x3e ${y}"\n llvm !!!MULTILINEMARKER!!!\n %slim_x \x3d extractvalue %Pos ${x}, 0\n %slim_y \x3d extractvalue %Pos ${y}, 0\n %slim_z \x3d icmp ne i64 %slim_x, %slim_y\n %fat_z \x3d zext i1 %slim_z to i64\n %adt_boolean \x3d insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\n\n// Math ops\n// \x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\nextern pure def infixAdd(x: Int, y: Int): Int \x3d\n js "(${x} + ${y})"\n chez "(+ ${x} ${y})"\n ml "(${x}: int) + ${y}"\n llvm "%z \x3d add %Int ${x}, ${y} ret %Int %z"\n\nextern pure def infixMul(x: Int, y: Int): Int \x3d\n js "(${x} * ${y})"\n chez "(* ${x} ${y})"\n ml "(${x}: int) * ${y}"\n llvm "%z \x3d mul %Int ${x}, ${y} ret %Int %z"\n\nextern pure def infixDiv(x: Int, y: Int): Int \x3d\n js "Math.floor(${x} / ${y})"\n chez "(floor (/ ${x} ${y}))"\n ml "(${x}: int) div ${y}"\n llvm "%z \x3d sdiv %Int ${x}, ${y} ret %Int %z"\n\nextern pure def infixSub(x: Int, y: Int): Int \x3d\n js "(${x} - ${y})"\n chez "(- ${x} ${y})"\n ml "(${x}: int) - ${y}"\n llvm "%z \x3d sub %Int ${x}, ${y} ret %Int %z"\n\nextern pure def mod(x: Int, y: Int): Int \x3d\n js "(${x} % ${y})"\n chez "(modulo ${x} ${y})"\n ml "(${x}: int) mod ${y}"\n llvm "%z \x3d srem %Int ${x}, ${y} ret %Int %z"\n\nextern pure def infixAdd(x: Double, y: Double): Double \x3d\n js "(${x} + ${y})"\n chez "(+ ${x} ${y})"\n ml "(${x}: real) + ${y}"\n llvm "%z \x3d fadd %Double ${x}, ${y} ret %Double %z"\n\nextern pure def infixMul(x: Double, y: Double): Double \x3d\n js "(${x} * ${y})"\n chez "(* ${x} ${y})"\n ml "(${x}: real) * ${y}"\n llvm "%z \x3d fmul %Double ${x}, ${y} ret %Double %z"\n\nextern pure def infixSub(x: Double, y: Double): Double \x3d\n js "(${x} - ${y})"\n chez "(- ${x} ${y})"\n ml "(${x}: real) - ${y}"\n llvm "%z \x3d fsub %Double ${x}, ${y} ret %Double %z"\n\nextern pure def infixDiv(x: Double, y: Double): Double \x3d\n js "(${x} / ${y})"\n chez "(/ ${x} ${y})"\n ml "(${x}: real) / ${y}"\n llvm "%z \x3d fdiv %Double ${x}, ${y} ret %Double %z"\n\nextern pure def cos(x: Double): Double \x3d\n js "Math.cos(${x})"\n chez "(cos ${x})"\n ml "Math.cos ${x}"\n\nextern pure def sin(x: Double): Double \x3d\n js "Math.sin(${x})"\n chez "(sin ${x})"\n ml "Math.sin ${x}"\n\nextern pure def atan(x: Double): Double \x3d\n js "Math.atan(${x})"\n chez "(atan ${x})"\n ml "Math.atan ${x}"\n\nextern pure def tan(x: Double): Double \x3d\n js "Math.tan(${x})"\n chez "(tan ${x})"\n ml "Math.tan ${x}"\n\nextern pure def sqrt(x: Double): Double \x3d\n js "Math.sqrt(${x})"\n chez "(sqrt ${x})"\n ml "Math.sqrt ${x}"\n llvm "%z \x3d call %Double @llvm.sqrt.f64(double ${x}) ret %Double %z"\n\ndef square(x: Double): Double \x3d x * x\n\ndef neg(n: Double): Double \x3d\n 0.0 - n\n\ndef max(n: Double, m: Double): Double \x3d\n if (n \x3e m) n else m\n\ndef abs(n: Double): Double \x3d\n max(n, neg(n))\n\nextern pure def log(x: Double): Double \x3d\n js "Math.log(${x})"\n chez "(log ${x})"\n ml "Math.ln ${x}"\n\nextern pure def log1p(x: Double): Double \x3d\n js "Math.log1p(${x})"\n chez "(log (+ ${x} 1))"\n ml "Math.ln (${x} + 1.0)"\n\nextern pure def exp(x: Double): Double \x3d\n js "Math.exp(${x})"\n chez "(exp ${x})"\n ml "Math.exp ${x}"\n\ndef pow(base: Double, exponent: Int): Double \x3d {\n def loop(base: Double, exponent: Int, acc: Double): Double \x3d {\n if (exponent \x3d\x3d 0) acc\n else if (exponent.mod(2) \x3d\x3d 0) loop(base * base, exponent / 2, acc) // even exponent\n else loop(base, exponent - 1, acc * base) // odd exponent\n }\n loop(base, exponent, 1.0)\n}\n\nextern pure def pow(base: Double, exponent: Double): Double \x3d\n js "Math.pow(${base}, ${exponent})"\n chez "(expt ${base} ${exponent})"\n ml "Math.pow ${base} ${exponent}"\n\n// since we do not have "extern val", yet\nextern pure def _pi(): Double \x3d\n js "Math.PI"\n chez "(* 4 (atan 1))"\n ml "Math.pi"\n\nval PI: Double \x3d _pi()\n\nextern pure def toInt(d: Double): Int \x3d\n js "Math.trunc(${d})"\n chez "(flonum-\x3efixnum ${d})"\n ml "Real.trunc ${d}"\n llvm "%z \x3d fptosi double ${d} to %Int ret %Int %z"\n\nextern pure def toDouble(d: Int): Double \x3d\n js "${d}"\n chez "${d}"\n ml "Real.fromInt ${d}"\n llvm "%z \x3d sitofp i64 ${d} to double ret double %z"\n\nextern pure def round(d: Double): Int \x3d\n js "Math.round(${d})"\n chez "(round ${d})"\n ml "Real.round ${d}"\n llvm !!!MULTILINEMARKER!!!\n %i \x3d call %Double @llvm.round.f64(double ${d})\n %z \x3d fptosi double %i to %Int ret %Int %z\n !!!MULTILINEMARKER!!!\n\ndef round(d: Double, digits: Int): Double \x3d {\n val factor \x3d pow(10.0, digits)\n round(d * factor).toDouble / factor\n}\n\nextern pure def floor(d: Double): Int \x3d\n js "Math.floor(${d})"\n chez "(flonum-\x3efixnum (floor ${d}))"\n ml "Real.floor ${d}"\n llvm !!!MULTILINEMARKER!!!\n %i \x3d call %Double @llvm.floor.f64(double ${d})\n %z \x3d fptosi double %i to %Int ret %Int %z\n !!!MULTILINEMARKER!!!\n\nextern pure def ceil(d: Double): Int \x3d\n js "Math.ceil(${d})"\n chez "(flonum-\x3efixnum (ceiling ${d}))"\n ml "Real.ceil ${d}"\n llvm !!!MULTILINEMARKER!!!\n %i \x3d call %Double @llvm.ceil.f64(double ${d})\n %z \x3d fptosi double %i to %Int ret %Int %z\n !!!MULTILINEMARKER!!!\n\ndef min(n: Int, m: Int): Int \x3d\n if (n \x3c m) n else m\n\ndef max(n: Int, m: Int): Int \x3d\n if (n \x3e m) n else m\n\ndef neg(n: Int): Int \x3d\n 0 - n\n\ndef abs(n: Int): Int \x3d\n max(n, neg(n))\n\n\nextern pure def infixLt(x: Int, y: Int): Bool \x3d\n js "(${x} \x3c ${y})"\n chez "(\x3c ${x} ${y})"\n ml "(${x}: int) \x3c ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d icmp slt %Int ${x}, ${y}\n %fat_z \x3d zext i1 %z to i64\n %adt_boolean \x3d insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixLte(x: Int, y: Int): Bool \x3d\n js "(${x} \x3c\x3d ${y})"\n chez "(\x3c\x3d ${x} ${y})"\n ml "(${x}: int) \x3c\x3d ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d icmp sle %Int ${x}, ${y}\n %fat_z \x3d zext i1 %z to i64\n %adt_boolean \x3d insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixGt(x: Int, y: Int): Bool \x3d\n js "(${x} \x3e ${y})"\n chez "(\x3e ${x} ${y})"\n ml "(${x}: int) \x3e ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d icmp sgt %Int ${x}, ${y}\n %fat_z \x3d zext i1 %z to i64\n %adt_boolean \x3d insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixGte(x: Int, y: Int): Bool \x3d\n js "(${x} \x3e\x3d ${y})"\n chez "(\x3e\x3d ${x} ${y})"\n ml "(${x}: int) \x3e\x3d ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d icmp sge %Int ${x}, ${y}\n %fat_z \x3d zext i1 %z to i64\n %adt_boolean \x3d insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixEq(x: Double, y: Double): Bool \x3d\n js "${x} \x3d\x3d\x3d ${y}"\n chez "(\x3d ${x} ${y})"\n ml "(${x}: real) \x3d ${y}"\n\nextern pure def infixNeq(x: Double, y: Double): Bool \x3d\n js "${x} !\x3d\x3d ${y}"\n chez "(not (\x3d ${x} ${y}))"\n ml "(${x}: real) \x3c\x3e ${y}"\n\nextern pure def infixLt(x: Double, y: Double): Bool \x3d\n js "(${x} \x3c ${y})"\n chez "(\x3c ${x} ${y})"\n ml "(${x}: real) \x3c ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d fcmp olt %Double ${x}, ${y}\n %fat_z \x3d zext i1 %z to i64\n %adt_boolean \x3d insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixLte(x: Double, y: Double): Bool \x3d\n js "(${x} \x3c\x3d ${y})"\n chez "(\x3c\x3d ${x} ${y})"\n ml "(${x}: real) \x3c\x3d ${y}"\n\nextern pure def infixGt(x: Double, y: Double): Bool \x3d\n js "(${x} \x3e ${y})"\n chez "(\x3e ${x} ${y})"\n ml "(${x}: real) \x3e ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d fcmp ogt %Double ${x}, ${y}\n %fat_z \x3d zext i1 %z to i64\n %adt_boolean \x3d insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixGte(x: Double, y: Double): Bool \x3d\n js "(${x} \x3e\x3d ${y})"\n chez "(\x3e\x3d ${x} ${y})"\n ml "(${x}: real) \x3e\x3d ${y}"\n\n// TODO do we really need those? if yes, move to string.effekt\nextern pure def infixLt(x: String, y: String): Bool \x3d\n js "(${x} \x3c ${y})"\n chez "(\x3c ${x} ${y})"\n ml "(${x}: string) \x3c ${y}"\n\nextern pure def infixLte(x: String, y: String): Bool \x3d\n js "(${x} \x3c\x3d ${y})"\n chez "(\x3c\x3d ${x} ${y})"\n ml "(${x}: string) \x3c\x3d ${y}"\n\nextern pure def infixGt(x: String, y: String): Bool \x3d\n js "(${x} \x3e ${y})"\n chez "(\x3e ${x} ${y})"\n ml "(${x}: string) \x3e ${y}"\n\nextern pure def infixGte(x: String, y: String): Bool \x3d\n js "(${x} \x3e\x3d ${y})"\n chez "(\x3e\x3d ${x} ${y})"\n ml "(${x}: string) \x3e\x3d ${y}"\n\n\n// Boolean operations\n// \x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\nextern pure def not(b: Bool): Bool \x3d\n js "!${b}"\n chez "(not ${b})"\n ml "not ${b}"\n llvm !!!MULTILINEMARKER!!!\n %p \x3d extractvalue %Pos ${b}, 0\n %q \x3d xor i64 1, %p\n %adt_q \x3d insertvalue %Pos zeroinitializer, i64 %q, 0\n ret %Pos %adt_q\n !!!MULTILINEMARKER!!!\n\ndef infixOr { first: \x3d\x3e Bool } { second: \x3d\x3e Bool }: Bool \x3d\n if (first()) true else second()\n\ndef infixAnd { first: \x3d\x3e Bool } { second: \x3d\x3e Bool }: Bool \x3d\n if (first()) second() else false\n\n\n// Bitwise operations\n// \x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\nextern pure def bitwiseShl(x: Int, y: Int): Int \x3d\n js "(${x} \x3c\x3c ${y})"\n chez "(ash ${x} ${y})"\n llvm "%z \x3d shl %Int ${x}, ${y} ret %Int %z"\n\nextern pure def bitwiseAnd(x: Int, y: Int): Int \x3d\n js "(${x} \x26 ${y})"\n chez "(logand ${x} ${y})"\n llvm "%z \x3d and %Int ${x}, ${y} ret %Int %z"\n\nextern pure def bitwiseXor(x: Int, y: Int): Int \x3d\n js "(${x} ^ ${y})"\n chez "(logxor ${x} ${y})"\n llvm "%z \x3d xor %Int ${x}, ${y} ret %Int %z"\n\n\n// Byte operations\n// \x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\nextern pure def toByte(n: Int): Byte \x3d\n js "${n}"\n llvm "%z \x3d trunc %Int ${n} to %Byte ret %Byte %z"\n\nextern pure def toInt(n: Byte): Int \x3d\n js "${n}"\n llvm "%z \x3d zext %Byte ${n} to %Int ret %Int %z"\n\n\n// Undefined and Null\n// \x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\n// Should only be used for interop with FFI, since values in Effekt\n// should not be undefined.\n//\n// js: undefined || null\n// chez: #f\n// ml: NONE (of option \'a)\n// llvm: null?\n\n/**\n * The value used by the FFI to represent undefined values\n */\nextern pure def undefined[A](): A \x3d\n js "undefined"\n chez "#f"\n ml "NONE"\n\n/**\n * Is an FFI value undefined?\n */\nextern pure def isUndefined[A](value: A): Bool \x3d\n js "(${value} \x3d\x3d\x3d undefined || ${value} \x3d\x3d\x3d null)"\n chez "(eq? ${value} #f)"\n ml "Option.isSome ${value}"\n\n\n// Tuples\n// \x3d\x3d\x3d\x3d\x3d\x3d\nrecord Tuple2[A, B](first: A, second: B)\nrecord Tuple3[A, B, C](first: A, second: B, third: C)\nrecord Tuple4[A, B, C, D](first: A, second: B, third: C, fourth: D)\nrecord Tuple5[A, B, C, D, E](first: A, second: B, third: C, fourth: D, fifth: E)\nrecord Tuple6[A, B, C, D, E, F](first: A, second: B, third: C, fourth: D, fifth: E, sixth: F)\n\n\n// Control Flow\n// \x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\ninterface Control {\n def break(): Unit\n def continue(): Unit\n}\n\ndef loop { f: () \x3d\x3e Unit }: Unit \x3d {\n def go(): Unit \x3d { f(); go() }\n go()\n}\n\ndef loop { f: {Control} \x3d\x3e Unit }: Unit \x3d try {\n def go(): Unit \x3d { f {label}; go() }\n go()\n} with label: Control {\n def break() \x3d ()\n def continue() \x3d loop { f }\n}\n\n/**\n * Calls provided action repeatedly. `start` is inclusive, `end` is not.\n */\ndef each(start: Int, end: Int) { action: (Int) \x3d\x3e Unit } \x3d {\n def loop(i: Int): Unit \x3d\n if (i \x3c end) { action(i); loop(i + 1) }\n\n loop(start)\n}\n\n/**\n * Calls provided action repeatedly with support for breaking. `start` is inclusive, `end` is not.\n */\ndef each(start: Int, end: Int) { action: (Int) {Control} \x3d\x3e Unit } \x3d {\n var i \x3d start;\n loop { {l} \x3d\x3e\n if (i \x3c end) { val el \x3d i; i \x3d i + 1; action(el){l} }\n else { l.break() }\n }\n}\n\ndef repeat(n: Int) { action: () \x3d\x3e Unit } \x3d each(0, n) { n \x3d\x3e action() }\n\ndef repeat(n: Int) { action: () {Control} \x3d\x3e Unit } \x3d each(0, n) { (n) {l} \x3d\x3e action() {l} }\n\nnamespace internal {\n namespace boxing {\n // For boxing polymorphic values\n extern type BoxedUnit\n extern pure def boxUnit(u: Unit): Unit \x3d\n extern pure def unboxUnit(u: Unit): Unit \x3d\n\n extern type BoxedInt\n extern pure def boxInt(n: Int): BoxedInt \x3d\n llvm !!!MULTILINEMARKER!!!\n %boxed1 \x3d insertvalue %Pos zeroinitializer, i64 ${n}, 0\n %boxed2 \x3d insertvalue %Pos %boxed1, %Object null, 1\n ret %Pos %boxed2\n !!!MULTILINEMARKER!!!\n extern pure def unboxInt(b: BoxedInt): Int \x3d\n llvm !!!MULTILINEMARKER!!!\n %unboxed \x3d extractvalue %Pos ${b}, 0\n ret %Int %unboxed\n !!!MULTILINEMARKER!!!\n\n extern type BoxedByte\n extern pure def boxByte(n: Byte): BoxedByte \x3d\n llvm !!!MULTILINEMARKER!!!\n %extended \x3d sext i8 ${n} to i64\n %boxed1 \x3d insertvalue %Pos zeroinitializer, i64 %extended, 0\n %boxed2 \x3d insertvalue %Pos %boxed1, %Object null, 1\n ret %Pos %boxed2\n !!!MULTILINEMARKER!!!\n extern pure def unboxByte(b: BoxedByte): Byte \x3d\n llvm !!!MULTILINEMARKER!!!\n %unboxed \x3d extractvalue %Pos ${b}, 0\n %truncated \x3d trunc i64 %unboxed to i8\n ret i8 %truncated\n !!!MULTILINEMARKER!!!\n\n extern type BoxedChar\n extern pure def boxChar(c: Char): BoxedChar \x3d\n llvm !!!MULTILINEMARKER!!!\n %boxed1 \x3d insertvalue %Pos zeroinitializer, i64 ${c}, 0\n %boxed2 \x3d insertvalue %Pos %boxed1, %Object null, 1\n ret %Pos %boxed2\n !!!MULTILINEMARKER!!!\n extern pure def unboxChar(b: BoxedChar): Char \x3d\n llvm !!!MULTILINEMARKER!!!\n %unboxed \x3d extractvalue %Pos ${b}, 0\n ret %Int %unboxed\n !!!MULTILINEMARKER!!!\n\n extern type BoxedBool\n extern pure def boxBool(b: Bool): BoxedBool \x3d\n extern pure def unboxBool(b: BoxedBool): Bool \x3d\n\n extern type BoxedDouble\n extern pure def boxDouble(d: Double): BoxedDouble \x3d\n llvm !!!MULTILINEMARKER!!!\n %n \x3d bitcast double ${d} to i64\n %boxed1 \x3d insertvalue %Pos zeroinitializer, i64 %n, 0\n %boxed2 \x3d insertvalue %Pos %boxed1, %Object null, 1\n ret %Pos %boxed2\n !!!MULTILINEMARKER!!!\n extern pure def unboxDouble(b: BoxedDouble): Double \x3d\n llvm !!!MULTILINEMARKER!!!\n %unboxed \x3d extractvalue %Pos ${b}, 0\n %d \x3d bitcast i64 %unboxed to double\n ret %Double %d\n !!!MULTILINEMARKER!!!\n }\n}\n'); +Gv("common/dequeue.effekt",'module dequeue\n\n\n// An implementation of a functional dequeue, using Okasaki\'s\n// bankers dequeue implementation.\n//\n// Translation from the Haskell implementation:\n// https://hackage.haskell.org/package/dequeue-0.1.12/docs/src/Data-Dequeue.html#Dequeue\nrecord Dequeue[R](front: List[R], frontSize: Int, rear: List[R], rearSize: Int)\n\ndef emptyQueue[R](): Dequeue[R] \x3d Dequeue(Nil(), 0, Nil(), 0)\n\ndef isEmpty[R](dq: Dequeue[R]): Bool \x3d dq match {\n case Dequeue(f, fs, r, rs) \x3d\x3e (fs \x3d\x3d 0) \x26\x26 (rs \x3d\x3d 0)\n}\n\ndef size[R](dq: Dequeue[R]): Int \x3d dq match {\n case Dequeue(f, fs, r, rs) \x3d\x3e fs + rs\n}\n\ndef first[R](dq: Dequeue[R]): Option[R] \x3d dq match {\n case Dequeue(f, fs, r, rs) \x3d\x3e\n if ((fs \x3d\x3d 0) \x26\x26 (rs \x3d\x3d 1)) { r.headOption }\n else { f.headOption }\n}\n\ndef last[R](dq: Dequeue[R]): Option[R] \x3d dq match {\n case Dequeue(f, fs, r, rs) \x3d\x3e\n if ((fs \x3d\x3d 1) \x26\x26 (rs \x3d\x3d 0)) { f.headOption }\n else { r.headOption }\n}\n\ndef check[R](dq: Dequeue[R]): Dequeue[R] \x3d dq match {\n case Dequeue(f, fs, r, rs) \x3d\x3e\n val c \x3d 4;\n val size1 \x3d (fs + rs) / 2;\n val size2 \x3d (fs + rs) - size1;\n\n if (fs \x3e c * rs + 1) {\n val front \x3d f.take(size1);\n val rear \x3d r.append(f.drop(size1).reverse);\n Dequeue(front, size1, rear, size2)\n } else if (rs \x3e c * fs + 1) {\n val front \x3d f.append(r.drop(size1).reverse);\n val rear \x3d r.take(size1);\n Dequeue(front, size2, rear, size1)\n } else {\n dq\n }\n}\n\ndef pushFront[R](dq: Dequeue[R], el: R): Dequeue[R] \x3d dq match {\n case Dequeue(f, fs, r, rs) \x3d\x3e Dequeue(Cons(el, f), fs + 1, r, rs).check\n}\n\ndef popFront[R](dq: Dequeue[R]): Option[(R, Dequeue[R])] \x3d dq match {\n case Dequeue(Nil(), fs, Cons(x, Nil()), rs) \x3d\x3e\n Some((x, emptyQueue()))\n case Dequeue(Nil(), fs, r, rs) \x3d\x3e\n None()\n case Dequeue(Cons(x, rest), fs, r, rs) \x3d\x3e\n Some((x, Dequeue(rest, fs - 1, r, rs).check))\n}\n\ndef pushBack[R](dq: Dequeue[R], el: R): Dequeue[R] \x3d dq match {\n case Dequeue(f, fs, r, rs) \x3d\x3e Dequeue(f, fs, Cons(el, r), rs + 1).check\n}\n\ndef popBack[R](dq: Dequeue[R]): Option[(R, Dequeue[R])] \x3d dq match {\n case Dequeue(Cons(x, Nil()), fs, Nil(), rs) \x3d\x3e\n Some((x, emptyQueue()))\n case Dequeue(f, fs, Nil(), rs) \x3d\x3e\n None()\n case Dequeue(f, fs, Cons(x, rest), rs) \x3d\x3e\n Some((x, Dequeue(f, fs, rest, rs - 1).check))\n}\n\n\ndef show[A](d: Dequeue[A]) { showA: A \x3d\x3e String }: String \x3d {\n val Dequeue(front, frontSize, rear, rearSize) \x3d d;\n "Dequeue(" ++ show(front){showA} ++ ", " ++ show(frontSize) ++ ", " ++\n show(rear){showA} ++ ", " ++ show(rearSize) ++ ")"\n}\ndef show(l: Dequeue[Int]): String \x3d show(l) { e \x3d\x3e show(e) }\ndef show(l: Dequeue[Double]): String \x3d show(l) { e \x3d\x3e show(e) }\ndef show(l: Dequeue[Bool]): String \x3d show(l) { e \x3d\x3e show(e) }\ndef show(l: Dequeue[String]): String \x3d show(l) { e \x3d\x3e e }\n\ndef println(l: Dequeue[Int]): Unit \x3d println(show(l))\ndef println(l: Dequeue[Double]): Unit \x3d println(show(l))\ndef println(l: Dequeue[Bool]): Unit \x3d println(show(l))\ndef println(l: Dequeue[String]): Unit \x3d println(show(l))\n'); Gv("common/args.effekt",'module args\n\nextern io def commandLineArgs(): List[String] \x3d\n js { js::commandLineArgs() }\n chez { chez::commandLineArgs() }\n ml { ml::commandLineArgs() }\n llvm { llvm::commandLineArgs() }\n\nnamespace js {\n extern type Args // \x3d Array[String]\n\n extern io def nativeArgs(): Args \x3d js "process.argv.slice(1)"\n\n extern io def argCount(args: Args): Int \x3d js "${args}.length"\n\n extern io def argument(args: Args, i: Int): String \x3d js "${args}[${i}]"\n\n def commandLineArgs(): List[String] \x3d {\n def toList(args: Args, start: Int, acc: List[String]): List[String] \x3d\n if (start \x3c 1) { acc }\n else args.toList(start - 1, Cons(args.argument(start), acc))\n\n val args \x3d nativeArgs()\n args.toList(args.argCount - 1, Nil())\n }\n}\n\nnamespace chez {\n extern type Args // \x3d CSList[String]\n\n extern io def nativeArgs(): Args \x3d\n chez "(cdr (command-line))"\n\n extern pure def isEmpty(l: Args): Bool \x3d\n chez "(null? ${l})"\n\n extern pure def head(l: Args): String \x3d\n chez "(car ${l})"\n\n extern pure def tail(l: Args): Args \x3d\n chez "(cdr ${l})"\n\n def toList(l: Args): List[String] \x3d\n if (l.isEmpty) Nil() else Cons(l.head, l.tail.toList)\n\n def commandLineArgs(): List[String] \x3d nativeArgs().toList\n}\n\nnamespace ml {\n\n // MLList[String]\n // we inline these from mllist to not have a dependency\n extern type Args\n\n extern io def nativeArgs(): Args \x3d\n ml "CommandLine.arguments ()"\n\n extern pure def isEmpty(args: Args): Bool \x3d\n ml "null ${args}"\n\n extern io def first(a: Args): String \x3d\n ml "hd ${a}"\n\n extern io def rest(a: Args): Args \x3d\n ml "tl ${a}"\n\n\n def commandLineArgs(): List[String] \x3d {\n def toList(args: Args): List[String] \x3d\n if (args.isEmpty) Nil() else Cons(args.first, args.rest.toList)\n nativeArgs().toList\n }\n}\n\nnamespace llvm {\n extern io def argCount(): Int \x3d\n llvm !!!MULTILINEMARKER!!!\n %c \x3d call %Int @c_get_argc()\n ret %Int %c\n !!!MULTILINEMARKER!!!\n\n extern io def argument(i: Int): String \x3d\n llvm !!!MULTILINEMARKER!!!\n %s \x3d call %Pos @c_get_arg(%Int ${i})\n ret %Pos %s\n !!!MULTILINEMARKER!!!\n\n def commandLineArgs(): List[String] \x3d {\n def toList(start: Int, acc: List[String]): List[String] \x3d\n if (start \x3c 1) { acc }\n else toList(start - 1, Cons(argument(start), acc))\n\n toList(argCount() - 1, Nil())\n }\n}\n'); -Gv("common/ref.effekt",'module ref\n\nimport effekt\n\nextern js !!!MULTILINEMARKER!!!\nfunction set$impl(ref, value) {\n ref.value \x3d value;\n return $effekt.unit;\n}\n!!!MULTILINEMARKER!!!\n\n/**\n * Global, mutable references\n */\nextern type Ref[T]\n\n/**\n * Allocates a new reference of size `size`, keeping its value _undefined_.\n * Prefer using `ref` constructor instead to ensure that the value is defined.\n */\nextern global def allocate[T](): Ref[T] \x3d\n js "{ value: undefined }"\n chez "(box #f)"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d call %Pos @c_ref_fresh(%Pos zeroinitializer)\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\n/**\n * Creates a new reference with the initial value `init`.\n */\nextern global def ref[T](init: T): Ref[T] \x3d\n js "{ value: ${init} }"\n chez "(box ${init})"\n ml "ref ${init}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d call %Pos @c_ref_fresh(%Pos ${init})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\n/**\n * Gets the referenced element of the `ref` in constant time.\n */\nextern global def get[T](ref: Ref[T]): T \x3d\n js "${ref}.value"\n chez "(unbox ${ref})"\n ml "!${ref}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d call %Pos @c_ref_get(%Pos ${ref})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\n/**\n * Sets the referenced element of the `ref` to `value` in constant time.\n */\nextern global def set[T](ref: Ref[T], value: T): Unit \x3d\n js "set$impl(${ref}, ${value})"\n chez "(set-box! ${ref} ${value})"\n ml "${ref} :\x3d ${value}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d call %Pos @c_ref_set(%Pos ${ref}, %Pos ${value})\n ret %Pos %z\n !!!MULTILINEMARKER!!!'); -Gv("common/list.effekt",'module list\n\nimport effekt\nimport option\nimport exception\n\n// Immutable linked list for finite sequences of elements.\ntype List[A] {\n Nil();\n Cons(head: A, tail: List[A])\n}\n\n// Create an empty list.\n//\n// O(1)\ndef empty[A](): List[A] \x3d Nil()\n\n// Create a list with one element.\n//\n// O(1)\ndef singleton[A](x: A): List[A] \x3d Cons(x, Nil())\n\n// Create a list of length `size` where all elements are `default`.\n//\n// O(size)\ndef fill[A](size: Int, default: A): List[A] \x3d {\n build(size) { i \x3d\x3e default }\n}\n\n// Create a list from a function `index` of given `size`.\n//\n// O(size)\ndef build[A](size: Int) { index: Int \x3d\x3e A }: List[A] \x3d {\n var result \x3d empty()\n each(0, size) { i \x3d\x3e\n result \x3d Cons(index(i), result)\n }\n result.reverse\n}\n\n// Check if list is empty.\n//\n// O(1)\ndef isEmpty[A](l: List[A]): Bool \x3d l match {\n case Nil() \x3d\x3e true\n case Cons(a, rest) \x3d\x3e false\n}\n\n// Check if list is nonempty.\n//\n// O(1)\ndef nonEmpty[A](l: List[A]): Bool \x3d l match {\n case Nil() \x3d\x3e false\n case Cons(a, rest) \x3d\x3e true\n}\n\n// Return the first element of a given list.\n// Throws a `MissingValue` exception if it\'s empty.\n//\n// O(1)\ndef head[A](l: List[A]): A / Exception[MissingValue] \x3d l match {\n case Nil() \x3d\x3e do raise(MissingValue(), "Trying to get the head of an empty list")\n case Cons(a, rest) \x3d\x3e a\n}\n\n// Return all elements of a given list except the first element.\n// Throws a `MissingValue` exception if it\'s empty.\n//\n// O(1)\ndef tail[A](l: List[A]): List[A] / Exception[MissingValue] \x3d l match {\n case Nil() \x3d\x3e do raise(MissingValue(), "Trying to get the head of an empty list")\n case Cons(a, rest) \x3d\x3e rest\n}\n\n// Return the first element of a given list.\n// Returns `None()` if it\'s empty.\n//\n// O(1)\ndef headOption[A](l: List[A]): Option[A] \x3d l match {\n case Nil() \x3d\x3e None()\n case Cons(a, rest) \x3d\x3e Some(a)\n}\n\n// Returns the last element of a given list.\n//\n// O(N)\ndef last[A](l: List[A]): A / Exception[MissingValue] \x3d {\n def go(list: List[A]): A \x3d {\n list match {\n case Nil() \x3d\x3e do raise(MissingValue(), "Trying to get the last element of an empty list")\n case Cons(x, Nil()) \x3d\x3e x\n case Cons(x, xs) \x3d\x3e go(xs)\n }\n }\n\n go(l)\n}\n\n// Get the value at given index.\n//\n// O(N)\ndef get[A](list: List[A], index: Int): A / Exception[OutOfBounds] \x3d {\n def go(list: List[A], i: Int): A \x3d {\n list match {\n case Nil() \x3d\x3e do raise(OutOfBounds(), "Trying to get an element outside the bounds of a list")\n case Cons(x, xs) and i \x3d\x3d 0 \x3d\x3e x\n case Cons(x, xs) \x3d\x3e go(xs, i - 1)\n }\n }\n\n go(list, index)\n}\n\n// Traverse a list, applying the given action on every element.\n//\n// O(N)\ndef foreach[A](l: List[A]) { f: (A) \x3d\x3e Unit } : Unit \x3d l match {\n case Nil() \x3d\x3e ()\n case Cons(head, tail) \x3d\x3e f(head); tail.foreach {f}\n}\n\n// Traverse a list, applying the given action on every element.\n//\n// O(N)\ndef foreach[A](l: List[A]) { f: (A) {Control} \x3d\x3e Unit } : Unit \x3d {\n var remainder \x3d l\n loop { {label} \x3d\x3e\n remainder match {\n case Nil() \x3d\x3e label.break()\n case Cons(head, tail) \x3d\x3e\n remainder \x3d tail\n f(head) {label}\n }\n }\n}\n\n// Traverse a list, applying the given action on every element and its (zero-based) index.\n//\n// O(N)\ndef foreachIndex[A](list: List[A]){ f: (Int, A) \x3d\x3e Unit }: Unit \x3d {\n def loop(index: Int, remainder: List[A]): Unit \x3d remainder match {\n case Nil() \x3d\x3e ()\n case Cons(head, tail) \x3d\x3e\n f(index, head);\n loop(index + 1, tail)\n }\n loop(0, list)\n}\n\n// Traverse a list, applying the given action on every element and its (zero-based) index.\n//\n// O(N)\ndef foreachIndex[A](list: List[A]){ f: (Int, A) {Control} \x3d\x3e Unit }: Unit \x3d {\n var remainder \x3d list\n var i \x3d -1\n loop { {label} \x3d\x3e\n remainder match {\n case Nil() \x3d\x3e label.break()\n case Cons(head, tail) \x3d\x3e\n remainder \x3d tail\n i \x3d i + 1\n f(i, head) {label}\n }\n }\n}\n\n// Map a function `f` over elements in a given list.\n//\n// O(N)\ndef map[A, B](l: List[A]) { f: A \x3d\x3e B } : List[B] \x3d {\n var acc \x3d Nil[B]()\n l.foreach { el \x3d\x3e acc \x3d Cons(f(el), acc) }\n acc.reverse\n}\n\n// Map a function `f` over elements in a given list,\n// keeping only the elements for which the function returned `Some(...)`,\n// discarding the elements for which the function returned `None()`.\n//\n// O(N)\ndef collect[A, B](l: List[A]) { f : A \x3d\x3e Option[B] }: List[B] \x3d {\n var acc \x3d Nil[B]()\n l.foreach { a \x3d\x3e\n val optB \x3d f(a)\n optB match {\n case None() \x3d\x3e ();\n case Some(b) \x3d\x3e acc \x3d Cons(b, acc);\n }\n }\n acc.reverse\n}\n\n// Map a function `f` over elements in a given list and concatenate the results.\n//\n// O(N)\ndef flatMap[A, B](l: List[A]) { f : A \x3d\x3e List[B] }: List[B] \x3d {\n var acc \x3d Nil[B]()\n l.foreach { a \x3d\x3e\n val bs \x3d f(a)\n acc \x3d acc.append(bs)\n }\n acc\n}\n\n// Check if predicate is true for all elements of the given list.\n//\n// O(N)\ndef all[A](list: List[A]) { predicate: A \x3d\x3e Bool }: Bool \x3d {\n list match {\n case Cons(x, xs) \x3d\x3e predicate(x) \x26\x26 all(xs) { predicate }\n case Nil() \x3d\x3e true\n }\n}\n\n// Check if predicate is true for at least one element of the given list.\n//\n// O(N)\ndef any[A](list: List[A]) { predicate: A \x3d\x3e Bool }: Bool \x3d {\n list match {\n case Cons(x, xs) \x3d\x3e predicate(x) || any(xs) { predicate }\n case Nil() \x3d\x3e false\n }\n}\n\n// Sum the elements of the list.\n//\n// O(N)\ndef sum(list: List[Int]): Int \x3d {\n var n \x3d 0;\n list.foreach { x \x3d\x3e n \x3d n + x };\n n\n}\n\n// Calculate the size of the list.\n//\n// O(N)\ndef size[A](l: List[A]): Int \x3d {\n var n \x3d 0;\n l.foreach { _ \x3d\x3e n \x3d n + 1 };\n n\n}\n\n// Reverse the list.\n//\n// O(N)\ndef reverse[A](l: List[A]): List[A] \x3d {\n var res \x3d Nil[A]()\n l.foreach { el \x3d\x3e res \x3d Cons(el, res) }\n res\n}\n\n// Reverse a list `l` and append `other` to it.\n//\n// Example:\n// ```\n// \x3e [1,2,3].reverseOnto([4,5,6])\n// [3,2,1,4,5,6]\n// ```\n//\n// O(|l|)\ndef reverseOnto[A](l: List[A], other: List[A]): List[A] \x3d l match {\n case Nil() \x3d\x3e other\n case Cons(a, rest) \x3d\x3e rest.reverseOnto(Cons(a, other))\n}\n\n// Concatenate list `l` with list `other`:\n//\n// Example:\n// ```\n// \x3e [1,2,3].append([4,5,6])\n// [1,2,3,4,5,6]\n// ```\n//\n// O(N)\ndef append[A](l: List[A], other: List[A]): List[A] \x3d\n l.reverse.reverseOnto(other)\n\n// Flatten a list of lists into a single list.\n//\n// Examples:\n// ```\n// \x3e [[1, 2, 3], [4, 5], [6]].join()\n// [1, 2, 3, 4, 5, 6]\n//\n// \x3e [[]].join()\n// []\n// ```\n//\n// O(N)\ndef join[A](lists: List[List[A]]): List[A] \x3d {\n var acc: List[A] \x3d Nil()\n lists.foreach { list \x3d\x3e\n acc \x3d acc.append(list)\n }\n acc\n}\n\n// Flatten a list of lists into a single list,\n// putting the `between` list in between each list in the input.\n//\n// Examples:\n// ```\n// \x3e [[100], [200, 300], [400]].join([1, 2, 3])\n// [100, 1, 2, 3, 200, 300, 1, 2, 3, 400]\n//\n// \x3e [[]].join([1, 2, 3])\n// []\n// ```\n//\n// O(N)\ndef join[A](lists: List[List[A]], between: List[A]): List[A] \x3d {\n lists match {\n case Nil() \x3d\x3e Nil()\n case Cons(firstList, restOfLists) \x3d\x3e\n firstList.append(\n restOfLists.flatMap { list \x3d\x3e between.append(list)}\n )\n }\n}\n\n// Take the first `n` elements of a given list.\n//\n// Examples:\n// ```\n// \x3e [1, 2, 3].take(2)\n// [1, 2]\n//\n// \x3e [1, 2, 3].take(0)\n// []\n//\n// \x3e [1, 2, 3].take(3)\n// [1, 2, 3]\n//\n// \x3e [1, 2, 3].take(5)\n// [1, 2, 3]\n//\n// \x3e [1, 2, 3].take(-1)\n// []\n// ```\n//\n// O(n)\ndef take[A](l: List[A], n: Int): List[A] \x3d\n if (n \x3c\x3d 0) {\n Nil()\n } else l match {\n case Nil() \x3d\x3e Nil()\n case Cons(a, rest) \x3d\x3e Cons(a, rest.take(n - 1))\n }\n\n// Drop the first `n` elements of a given list.\n//\n// Examples:\n// ```\n// \x3e [1, 2, 3].drop(2)\n// [3]\n//\n// \x3e [1, 2, 3].drop(0)\n// [1, 2, 3]\n//\n// \x3e [1, 2, 3].drop(3)\n// []\n//\n// \x3e [1, 2, 3].drop(5)\n// []\n//\n// \x3e [1, 2, 3].drop(-1)\n// [1, 2, 3]\n// ```\n//\n// O(n)\ndef drop[A](l: List[A], n: Int): List[A] \x3d\n if (n \x3c\x3d 0) {\n l\n } else l match {\n case Nil() \x3d\x3e Nil()\n case Cons(a, rest) \x3d\x3e rest.drop(n - 1)\n }\n\n// Return a slice of a given list from the starting index (inclusive)\n// to the given end index (exclusive).\n//\n// Examples:\n// ```\n// \x3e [1, 2, 3, 4, 5, 6].slice(1, 4)\n// [2, 3, 4]\n//\n// \x3e [1, 2, 3, 4, 5, 6].slice(1, 2)\n// [2]\n//\n// \x3e [1, 2, 3, 4, 5, 6].slice(1, 1)\n// []\n//\n// \x3e [1, 2, 3, 4, 5, 6].slice(4, 1)\n// []\n//\n// \x3e [1, 2, 3, 4, 5, 6].slice(-100, 100)\n// [1, 2, 3, 4, 5, 6]\n// ```\n//\n// O(N)\ndef slice[A](list: List[A], start: Int, stopExclusive: Int): List[A] \x3d {\n val prefix \x3d list.drop(start)\n val length \x3d stopExclusive - start\n prefix.take(length)\n}\n\n// Split the list at given index.\n//\n// Law: `val (l, r) \x3d list.splitAt(i); l.append(r) \x3d\x3d\x3d list`\n//\n// O(N)\ndef splitAt[A](list: List[A], index: Int): (List[A], List[A]) \x3d {\n (list.take(index), list.drop(index))\n}\n\n// Update the element at given index in the list using the `update` function.\n// Returns the original list if the index is out of bounds.\n//\n// See: `modifyAt`\n// Examples:\n// ```\n// \x3e [1, 2, 3].updateAt(1) { n \x3d\x3e n + 100 }\n// [1, 102, 3]\n//\n// \x3e [1, 2, 3].updateAt(10) { n \x3d\x3e n + 100 }\n// [1, 2, 3]\n// ```\n//\n// O(N)\ndef updateAt[A](list: List[A], index: Int) { update: A \x3d\x3e A }: List[A] \x3d {\n list.splitAt(index) match {\n case (left, Cons(x, right)) \x3d\x3e\n left.append(Cons(update(x), right))\n case _ \x3d\x3e list\n }\n}\n\n// Modify the element at given index in the list using the `update` function.\n// Throws `OutOfBounds` if the index is out of bounds.\n//\n// See: `updateAt`\n// Examples:\n// ```\n// \x3e [1, 2, 3].modifyAt(1) { n \x3d\x3e n + 100 }\n// Some([1, 102, 3])\n//\n// \x3e [1, 2, 3].modifyAt(10) { n \x3d\x3e n + 100 }\n// None()\n// ```\n//\n// O(N)\ndef modifyAt[A](list: List[A], index: Int) { update: A \x3d\x3e A }: List[A] / Exception[OutOfBounds] \x3d {\n list.splitAt(index) match {\n case (left, Cons(x, right)) \x3d\x3e\n left.append(Cons(update(x), right))\n case _ \x3d\x3e do raise(OutOfBounds(), "Trying to modify an element outside the bounds of a list")\n }\n}\n\n// Delete the element at given index in the list.\n//\n// Example:\n// ```\n// \x3e [1, 2, 3, 4].deleteAt(1)\n// [1, 3, 4]\n//\n// \x3e [1, 2, 3, 4].deleteAt(-1)\n// [1, 2, 3, 4]\n//\n// \x3e [1, 2, 3, 4].deleteAt(10)\n// [1, 2, 3, 4]\n// ```\n//\n// O(N)\ndef deleteAt[A](list: List[A], index: Int): List[A] \x3d {\n val left \x3d list.slice(0, index)\n val right \x3d list.slice(index + 1, list.size())\n left.append(right)\n}\n\n// Add an element at given index in the list.\n//\n// Examples:\n// ```\n// \x3e [1, 2, 3].insert(-1, 0)\n// [0, 1, 2, 3]\n//\n// \x3e [1, 2, 3].insert(0, 0)\n// [0, 1, 2, 3]\n//\n// \x3e [1, 2, 3].insert(1, 0)\n// [1, 0, 2, 3]\n//\n// \x3e [1, 2, 3].insert(3, 0)\n// [1, 2, 3, 0]\n//\n// \x3e [1, 2, 3].insert(10, 0)\n// [1, 2, 3, 0]\n// ```\n//\n// O(N)\ndef insert[A](list: List[A], index: Int, x: A): List[A] \x3d {\n val (left, right) \x3d list.splitAt(index)\n left.append(Cons(x, right))\n}\n\n// Replace an element at given index in the list.\n// Returns the original list when the index is out of bounds.\n//\n// Examples:\n// ```\n// \x3e [1, 2, 3].replace(0, 42)\n// [42, 2, 3]\n//\n// \x3e [1, 2, 3].replace(-1, 42)\n// [1, 2, 3]\n//\n// \x3e [1, 2, 3].replace(10, 42)\n// [1, 2, 3]\n// ```\n//\n// O(N)\ndef replace[A](list: List[A], index: Int, x: A): List[A] \x3d {\n if (index \x3c 0 || index \x3e\x3d list.size()) {\n list\n } else {\n val left \x3d list.take(index)\n val right \x3d list.drop(index + 1)\n left.append(Cons(x, right))\n }\n}\n\n// Produce a list of pairs from a pair of lists.\n// The length of the result is the minimum of lengths of the two lists.\n//\n// Examples:\n// ```\n// \x3e zip([1, 2, 3], [100, 200, 300])\n// [(1, 100), (2, 200), (3, 300)]\n//\n// \x3e zip([1, 2, 3], Nil[Int]())\n// []\n//\n// \x3e zip(Nil[Int](), [1, 2, 3])\n// []\n//\n// \x3e zip([1, 2, 3], [42])\n// [(1, 42)]\n// ```\n//\n// O(N)\ndef zip[A, B](left: List[A], right: List[B]): List[(A, B)] \x3d {\n def go(acc: List[(A, B)], left: List[A], right: List[B]): List[(A, B)] \x3d {\n (left, right) match {\n case (Cons(a, as), Cons(b, bs)) \x3d\x3e\n val pair \x3d (a, b)\n val newAcc \x3d Cons(pair, acc)\n go(newAcc, as, bs)\n case _ \x3d\x3e acc.reverse\n }\n }\n go(Nil(), left, right)\n}\n\n// Combine two lists with the given function.\n// The length of the result is the minimum of lengths of the two lists.\n//\n// Examples:\n// ```\n// \x3e zipWith([1, 2, 3], [100, 200, 300]) { (a, b) \x3d\x3e a + b }\n// [101, 202, 303]\n//\n// \x3e zipWith([1, 2, 3], Nil[Int]()) { (a, b) \x3d\x3e a + b }\n// []\n//\n// \x3e zipWith(Nil[Int](), [1, 2, 3]) { (a, b) \x3d\x3e a + b }\n// []\n//\n// \x3e zipWith([1, 2, 3], [42]) { (a, b) \x3d\x3e a + b }\n// [43]\n// ```\n//\n// O(N)\ndef zipWith[A, B, C](left: List[A], right: List[B]) { combine : (A, B) \x3d\x3e C }: List[C] \x3d {\n def go(acc: List[C], left: List[A], right: List[B]): List[C] \x3d {\n (left, right) match {\n case (Cons(a, as), Cons(b, bs)) \x3d\x3e\n val result \x3d combine(a, b)\n val newAcc \x3d Cons(result, acc)\n go(newAcc, as, bs)\n case _ \x3d\x3e acc.reverse\n }\n }\n go(Nil(), left, right)\n}\n\n// Produce a pair of lists from a list of pairs.\n//\n// Examples:\n// ```\n// \x3e [(1, 100), (2, 200), (3, 300)].unzip()\n// ([1, 2, 3], [100, 200, 300])\n// ```\n//\n// O(N)\ndef unzip[A, B](pairs: List[(A, B)]): (List[A], List[B]) \x3d {\n pairs match {\n case Nil() \x3d\x3e (Nil(), Nil())\n case Cons((l, r), rest) \x3d\x3e\n val (left, right) \x3d rest.unzip();\n (Cons(l, left), Cons(r, right))\n }\n}\n\n// Partition a given list into two lists.\n// The left list contains the elements that satsify the predicate,\n// the right list contains the elements that do not.\n//\n// O(N)\ndef partition[A](l: List[A]) { pred: A \x3d\x3e Bool }: (List[A], List[A]) \x3d {\n var lefts: List[A] \x3d Nil()\n var rights: List[A] \x3d Nil()\n l.foreach { el \x3d\x3e\n if (pred(el)) {\n lefts \x3d Cons(el, lefts)\n } else {\n rights \x3d Cons(el, rights)\n }\n }\n\n (lefts.reverse, rights.reverse)\n}\n\n// Sort a list using a given comparison function.\n//\n// Note: this implementation is not stacksafe!\n//\n// O(N log N)\ndef sortBy[A](l: List[A]) { compare: (A, A) \x3d\x3e Bool }: List[A] \x3d\n l match {\n case Nil() \x3d\x3e Nil()\n case Cons(pivot, rest) \x3d\x3e\n val (lt, gt) \x3d rest.partition { el \x3d\x3e compare(el, pivot) };\n val leftSorted \x3d sortBy(lt) { (a, b) \x3d\x3e compare(a, b) }\n val rightSorted \x3d sortBy(gt) { (a, b) \x3d\x3e compare(a, b) }\n leftSorted.append(Cons(pivot, rightSorted))\n }\n\ndef sort(l: List[Int]): List[Int] \x3d l.sortBy { (a, b) \x3d\x3e a \x3c b }\ndef sort(l: List[Double]): List[Double] \x3d l.sortBy { (a, b) \x3d\x3e a \x3c b }\n\n// Check if a list is sorted according to the given comparison function.\n//\n// O(N)\ndef isSortedBy[A](list: List[A]) { compare: (A, A) \x3d\x3e Bool }: Bool \x3d {\n def go(list: List[A]): Bool \x3d {\n list match {\n case Nil() \x3d\x3e true\n case Cons(x, Nil()) \x3d\x3e true\n case Cons(x, Cons(y, rest)) \x3d\x3e\n val next \x3d Cons(y, rest) // Future work: Replace this by an @-pattern!\n compare(x, y) \x26\x26 go(next)\n }\n }\n go(list)\n}\n\n\n// Show Instances\n// --------------\n\ndef show[A](l: List[A]) { showA: A \x3d\x3e String }: String \x3d {\n def go(l: List[A]): String \x3d l match {\n case Nil() \x3d\x3e "Nil()"\n case Cons(x, xs) \x3d\x3e "Cons(" ++ showA(x) ++ ", " ++ go(xs) ++ ")"\n }\n go(l)\n}\ndef show(l: List[Int]): String \x3d show(l) { e \x3d\x3e show(e) }\ndef show(l: List[Double]): String \x3d show(l) { e \x3d\x3e show(e) }\ndef show(l: List[Bool]): String \x3d show(l) { e \x3d\x3e show(e) }\ndef show(l: List[String]): String \x3d show(l) { e \x3d\x3e e }\n\ndef println(l: List[Int]): Unit \x3d println(show(l))\ndef println(l: List[Double]): Unit \x3d println(show(l))\ndef println(l: List[Bool]): Unit \x3d println(show(l))\ndef println(l: List[String]): Unit \x3d println(show(l))\n'); -Gv("common/io/network.effekt",'module io/network\n\nimport bytes\nimport io\n\nnamespace js {\n extern jsNode !!!MULTILINEMARKER!!!\n const net \x3d require(\'node:net\');\n\n function listen(server, port, host, listener) {\n server.listen(port, host);\n server.on(\'connection\', listener);\n }\n !!!MULTILINEMARKER!!!\n\n extern type JSServer // \x3d net.Server\n extern type JSSocket // \x3d net.Socket\n extern io def server(): JSServer \x3d\n jsNode "net.createServer()"\n extern io def listen(server: JSServer, port: Int, host: String, listener: JSSocket \x3d\x3e Unit at {io, async, global}): Unit \x3d\n jsNode "listen(${server}, ${port}, ${host}, (socket) \x3d\x3e (${listener})(socket).run())"\n\n extern async def send(socket: JSSocket, data: Bytes): Unit \x3d\n jsNode "$effekt.callcc(callback \x3d\x3e ${socket}.write(${data}, callback))"\n\n extern async def receive(socket: JSSocket): Bytes \x3d\n jsNode "$effekt.callcc(callback \x3d\x3e ${socket}.once(\'data\', callback))"\n\n extern async def end(socket: JSSocket): Unit \x3d\n jsNode "$effekt.callcc(callback \x3d\x3e ${socket}.end(callback))"\n}\n\ninterface Socket {\n def send(message: Bytes): Unit\n def receive(): Bytes\n def end(): Unit\n}\n\ndef server(host: String, port: Int, handler: () \x3d\x3e Unit / Socket at {io, async, global}): Unit \x3d {\n val server \x3d js::server();\n js::listen(server, port, host, box { socket \x3d\x3e\n println("New connection")\n spawn(box {\n try handler()\n with Socket {\n def send(message) \x3d\n resume(js::send(socket, message))\n def receive() \x3d\n resume(js::receive(socket))\n def end() \x3d\n resume(js::end(socket))\n }\n })\n })\n}\n\n\nnamespace examples {\n def helloWorldApp(): Unit / Socket \x3d {\n val request \x3d do receive();\n\n println("Received a request: " ++ request.toUTF8)\n\n if (request.toUTF8.startsWith("GET /")) {\n do send(fromUTF8("HTTP/1.1 200 OK\\r\\n\\r\\nHello from Effekt!"))\n } else {\n do send("HTTP/1.1 400 Bad Request\\r\\n\\r\\n".fromUTF8)\n }\n do end()\n }\n\n // A server that just shows "Hello from Effekt!" on localhost:8080\n def main() \x3d {\n val port \x3d 8080\n println("Starting server on http://localhost:" ++ port.show)\n\n server("localhost", port, box {\n helloWorldApp()\n })\n }\n}\n'); -Gv("common/io/error.effekt",'module io/error\n\n/**\n * Errors defined by libuv that can occur in IO operations.\n *\n * In addition to the named error codes, we also assign each error a\n * (positive) integer value that is stable across the different platforms.\n *\n * For the mapping of IOError and code values, see function fromCode.\n *\n * While stable, this integer value is supposed to only be used internally.\n * All user-facing operations should use values of type IOError, instead.\n *\n * see: https://docs.libuv.org/en/v1.x/errors.html\n */\ntype IOError {\n E2BIG();\n EACCES();\n EADDRINUSE();\n EADDRNOTAVAIL();\n EAFNOSUPPORT();\n EAGAIN();\n EAI_ADDRFAMILY();\n EAI_AGAIN();\n EAI_BADFLAGS();\n EAI_BADHINTS();\n EAI_CANCELED();\n EAI_FAIL();\n EAI_FAMILY();\n EAI_MEMORY();\n EAI_NODATA();\n EAI_NONAME();\n EAI_OVERFLOW();\n EAI_PROTOCOL();\n EAI_SERVICE();\n EAI_SOCKTYPE();\n EALREADY();\n EBADF();\n EBUSY();\n ECANCELED();\n ECHARSET();\n ECONNABORTED();\n ECONNREFUSED();\n ECONNRESET();\n EDESTADDRREQ();\n EEXIST();\n EFAULT();\n EFBIG();\n EHOSTUNREACH();\n EINTR();\n EINVAL();\n EIO();\n EISCONN();\n EISDIR();\n ELOOP();\n EMFILE();\n EMSGSIZE();\n ENAMETOOLONG();\n ENETDOWN();\n ENETUNREACH();\n ENFILE();\n ENOBUFS();\n ENODEV();\n ENOENT();\n ENOMEM();\n ENONET();\n ENOPROTOOPT();\n ENOSPC();\n ENOSYS();\n ENOTCONN();\n ENOTDIR();\n ENOTEMPTY();\n ENOTSOCK();\n ENOTSUP();\n EOVERFLOW();\n EPERM();\n EPIPE();\n EPROTO();\n EPROTONOSUPPORT();\n EPROTOTYPE();\n ERANGE();\n EROFS();\n ESHUTDOWN();\n ESPIPE();\n ESRCH();\n ETIMEDOUT();\n ETXTBSY();\n EXDEV();\n UNKNOWN();\n EOF();\n ENXIO();\n EMLINK();\n ENOTTY();\n EFTYPE();\n EILSEQ();\n ESOCKTNOSUPPORT();\n EUNATCH()\n}\n\n/**\n * Corresponding error message for a libuv error\n *\n * see: https://docs.libuv.org/en/v1.x/errors.html\n */\ndef message(error: IOError): String \x3d error match {\n case E2BIG() \x3d\x3e "argument list too long"\n case EACCES() \x3d\x3e "permission denied"\n case EADDRINUSE() \x3d\x3e "address already in use"\n case EADDRNOTAVAIL() \x3d\x3e "address not available"\n case EAFNOSUPPORT() \x3d\x3e "address family not supported"\n case EAGAIN() \x3d\x3e "resource temporarily unavailable"\n case EAI_ADDRFAMILY() \x3d\x3e "address family not supported"\n case EAI_AGAIN() \x3d\x3e "temporary failure"\n case EAI_BADFLAGS() \x3d\x3e "bad ai_flags value"\n case EAI_BADHINTS() \x3d\x3e "invalid value for hints"\n case EAI_CANCELED() \x3d\x3e "request canceled"\n case EAI_FAIL() \x3d\x3e "permanent failure"\n case EAI_FAMILY() \x3d\x3e "ai_family not supported"\n case EAI_MEMORY() \x3d\x3e "out of memory"\n case EAI_NODATA() \x3d\x3e "no address"\n case EAI_NONAME() \x3d\x3e "unknown node or service"\n case EAI_OVERFLOW() \x3d\x3e "argument buffer overflow"\n case EAI_PROTOCOL() \x3d\x3e "resolved protocol is unknown"\n case EAI_SERVICE() \x3d\x3e "service not available for socket type"\n case EAI_SOCKTYPE() \x3d\x3e "socket type not supported"\n case EALREADY() \x3d\x3e "connection already in progress"\n case EBADF() \x3d\x3e "bad file descriptor"\n case EBUSY() \x3d\x3e "resource busy or locked"\n case ECANCELED() \x3d\x3e "operation canceled"\n case ECHARSET() \x3d\x3e "invalid Unicode character"\n case ECONNABORTED() \x3d\x3e "software caused connection abort"\n case ECONNREFUSED() \x3d\x3e "connection refused"\n case ECONNRESET() \x3d\x3e "connection reset by peer"\n case EDESTADDRREQ() \x3d\x3e "destination address required"\n case EEXIST() \x3d\x3e "file already exists"\n case EFAULT() \x3d\x3e "bad address in system call argument"\n case EFBIG() \x3d\x3e "file too large"\n case EHOSTUNREACH() \x3d\x3e "host is unreachable"\n case EINTR() \x3d\x3e "interrupted system call"\n case EINVAL() \x3d\x3e "invalid argument"\n case EIO() \x3d\x3e "i/o error"\n case EISCONN() \x3d\x3e "socket is already connected"\n case EISDIR() \x3d\x3e "illegal operation on a directory"\n case ELOOP() \x3d\x3e "too many symbolic links encountered"\n case EMFILE() \x3d\x3e "too many open files"\n case EMSGSIZE() \x3d\x3e "message too long"\n case ENAMETOOLONG() \x3d\x3e "name too long"\n case ENETDOWN() \x3d\x3e "network is down"\n case ENETUNREACH() \x3d\x3e "network is unreachable"\n case ENFILE() \x3d\x3e "file table overflow"\n case ENOBUFS() \x3d\x3e "no buffer space available"\n case ENODEV() \x3d\x3e "no such device"\n case ENOENT() \x3d\x3e "no such file or directory"\n case ENOMEM() \x3d\x3e "not enough memory"\n case ENONET() \x3d\x3e "machine is not on the network"\n case ENOPROTOOPT() \x3d\x3e "protocol not available"\n case ENOSPC() \x3d\x3e "no space left on device"\n case ENOSYS() \x3d\x3e "function not implemented"\n case ENOTCONN() \x3d\x3e "socket is not connected"\n case ENOTDIR() \x3d\x3e "not a directory"\n case ENOTEMPTY() \x3d\x3e "directory not empty"\n case ENOTSOCK() \x3d\x3e "socket operation on non-socket"\n case ENOTSUP() \x3d\x3e "operation not supported on socket"\n case EOVERFLOW() \x3d\x3e "value too large for defined data type"\n case EPERM() \x3d\x3e "operation not permitted"\n case EPIPE() \x3d\x3e "broken pipe"\n case EPROTO() \x3d\x3e "protocol error"\n case EPROTONOSUPPORT() \x3d\x3e "protocol not supported"\n case EPROTOTYPE() \x3d\x3e "protocol wrong type for socket"\n case ERANGE() \x3d\x3e "result too large"\n case EROFS() \x3d\x3e "read-only file system"\n case ESHUTDOWN() \x3d\x3e "cannot send after transport endpoint shutdown"\n case ESPIPE() \x3d\x3e "invalid seek"\n case ESRCH() \x3d\x3e "no such process"\n case ETIMEDOUT() \x3d\x3e "connection timed out"\n case ETXTBSY() \x3d\x3e "text file is busy"\n case EXDEV() \x3d\x3e "cross-device link not permitted"\n case UNKNOWN() \x3d\x3e "unknown error"\n case EOF() \x3d\x3e "end of file"\n case ENXIO() \x3d\x3e "no such device or address"\n case EMLINK() \x3d\x3e "too many links"\n case ENOTTY() \x3d\x3e "inappropriate ioctl for device"\n case EFTYPE() \x3d\x3e "inappropriate file type or format"\n case EILSEQ() \x3d\x3e "illegal byte sequence"\n case ESOCKTNOSUPPORT() \x3d\x3e "socket type not supported"\n case EUNATCH() \x3d\x3e "protocol driver not attached"\n}\n\n/**\n * Corresponding name of a libuv error\n *\n * see: https://docs.libuv.org/en/v1.x/errors.html\n */\ndef name(error: IOError): String \x3d error match {\n case E2BIG() \x3d\x3e "E2BIG"\n case EACCES() \x3d\x3e "EACCES"\n case EADDRINUSE() \x3d\x3e "EADDRINUSE"\n case EADDRNOTAVAIL() \x3d\x3e "EADDRNOTAVAIL"\n case EAFNOSUPPORT() \x3d\x3e "EAFNOSUPPORT"\n case EAGAIN() \x3d\x3e "EAGAIN"\n case EAI_ADDRFAMILY() \x3d\x3e "EAI_ADDRFAMILY"\n case EAI_AGAIN() \x3d\x3e "EAI_AGAIN"\n case EAI_BADFLAGS() \x3d\x3e "EAI_BADFLAGS"\n case EAI_BADHINTS() \x3d\x3e "EAI_BADHINTS"\n case EAI_CANCELED() \x3d\x3e "EAI_CANCELED"\n case EAI_FAIL() \x3d\x3e "EAI_FAIL"\n case EAI_FAMILY() \x3d\x3e "EAI_FAMILY"\n case EAI_MEMORY() \x3d\x3e "EAI_MEMORY"\n case EAI_NODATA() \x3d\x3e "EAI_NODATA"\n case EAI_NONAME() \x3d\x3e "EAI_NONAME"\n case EAI_OVERFLOW() \x3d\x3e "EAI_OVERFLOW"\n case EAI_PROTOCOL() \x3d\x3e "EAI_PROTOCOL"\n case EAI_SERVICE() \x3d\x3e "EAI_SERVICE"\n case EAI_SOCKTYPE() \x3d\x3e "EAI_SOCKTYPE"\n case EALREADY() \x3d\x3e "EALREADY"\n case EBADF() \x3d\x3e "EBADF"\n case EBUSY() \x3d\x3e "EBUSY"\n case ECANCELED() \x3d\x3e "ECANCELED"\n case ECHARSET() \x3d\x3e "ECHARSET"\n case ECONNABORTED() \x3d\x3e "ECONNABORTED"\n case ECONNREFUSED() \x3d\x3e "ECONNREFUSED"\n case ECONNRESET() \x3d\x3e "ECONNRESET"\n case EDESTADDRREQ() \x3d\x3e "EDESTADDRREQ"\n case EEXIST() \x3d\x3e "EEXIST"\n case EFAULT() \x3d\x3e "EFAULT"\n case EFBIG() \x3d\x3e "EFBIG"\n case EHOSTUNREACH() \x3d\x3e "EHOSTUNREACH"\n case EINTR() \x3d\x3e "EINTR"\n case EINVAL() \x3d\x3e "EINVAL"\n case EIO() \x3d\x3e "EIO"\n case EISCONN() \x3d\x3e "EISCONN"\n case EISDIR() \x3d\x3e "EISDIR"\n case ELOOP() \x3d\x3e "ELOOP"\n case EMFILE() \x3d\x3e "EMFILE"\n case EMSGSIZE() \x3d\x3e "EMSGSIZE"\n case ENAMETOOLONG() \x3d\x3e "ENAMETOOLONG"\n case ENETDOWN() \x3d\x3e "ENETDOWN"\n case ENETUNREACH() \x3d\x3e "ENETUNREACH"\n case ENFILE() \x3d\x3e "ENFILE"\n case ENOBUFS() \x3d\x3e "ENOBUFS"\n case ENODEV() \x3d\x3e "ENODEV"\n case ENOENT() \x3d\x3e "ENOENT"\n case ENOMEM() \x3d\x3e "ENOMEM"\n case ENONET() \x3d\x3e "ENONET"\n case ENOPROTOOPT() \x3d\x3e "ENOPROTOOPT"\n case ENOSPC() \x3d\x3e "ENOSPC"\n case ENOSYS() \x3d\x3e "ENOSYS"\n case ENOTCONN() \x3d\x3e "ENOTCONN"\n case ENOTDIR() \x3d\x3e "ENOTDIR"\n case ENOTEMPTY() \x3d\x3e "ENOTEMPTY"\n case ENOTSOCK() \x3d\x3e "ENOTSOCK"\n case ENOTSUP() \x3d\x3e "ENOTSUP"\n case EOVERFLOW() \x3d\x3e "EOVERFLOW"\n case EPERM() \x3d\x3e "EPERM"\n case EPIPE() \x3d\x3e "EPIPE"\n case EPROTO() \x3d\x3e "EPROTO"\n case EPROTONOSUPPORT() \x3d\x3e "EPROTONOSUPPORT"\n case EPROTOTYPE() \x3d\x3e "EPROTOTYPE"\n case ERANGE() \x3d\x3e "ERANGE"\n case EROFS() \x3d\x3e "EROFS"\n case ESHUTDOWN() \x3d\x3e "ESHUTDOWN"\n case ESPIPE() \x3d\x3e "ESPIPE"\n case ESRCH() \x3d\x3e "ESRCH"\n case ETIMEDOUT() \x3d\x3e "ETIMEDOUT"\n case ETXTBSY() \x3d\x3e "ETXTBSY"\n case EXDEV() \x3d\x3e "EXDEV"\n case UNKNOWN() \x3d\x3e "UNKNOWN"\n case EOF() \x3d\x3e "EOF"\n case ENXIO() \x3d\x3e "ENXIO"\n case EMLINK() \x3d\x3e "EMLINK"\n case ENOTTY() \x3d\x3e "ENOTTY"\n case EFTYPE() \x3d\x3e "EFTYPE"\n case EILSEQ() \x3d\x3e "EILSEQ"\n case ESOCKTNOSUPPORT() \x3d\x3e "ESOCKTNOSUPPORT"\n case EUNATCH() \x3d\x3e "EUNATCH"\n}\n\n/**\n * Translates a integer code value to an IOError.\n *\n * See documentation of type IOError for further information.\n */\ndef fromNumber(number: Int): IOError \x3d number match {\n case 1 \x3d\x3e EPERM()\n case 2 \x3d\x3e ENOENT()\n case 3 \x3d\x3e ESRCH()\n case 4 \x3d\x3e EINTR()\n case 5 \x3d\x3e EIO()\n case 6 \x3d\x3e ENXIO()\n case 7 \x3d\x3e E2BIG()\n case 9 \x3d\x3e EBADF()\n case 11 \x3d\x3e EAGAIN()\n case 12 \x3d\x3e ENOMEM()\n case 13 \x3d\x3e EACCES()\n case 14 \x3d\x3e EFAULT()\n case 16 \x3d\x3e EBUSY()\n case 17 \x3d\x3e EEXIST()\n case 18 \x3d\x3e EXDEV()\n case 19 \x3d\x3e ENODEV()\n case 20 \x3d\x3e ENOTDIR()\n case 21 \x3d\x3e EISDIR()\n case 22 \x3d\x3e EINVAL()\n case 23 \x3d\x3e ENFILE()\n case 24 \x3d\x3e EMFILE()\n case 25 \x3d\x3e ENOTTY()\n case 26 \x3d\x3e ETXTBSY()\n case 27 \x3d\x3e EFBIG()\n case 28 \x3d\x3e ENOSPC()\n case 29 \x3d\x3e ESPIPE()\n case 30 \x3d\x3e EROFS()\n case 31 \x3d\x3e EMLINK()\n case 32 \x3d\x3e EPIPE()\n case 34 \x3d\x3e ERANGE()\n case 36 \x3d\x3e ENAMETOOLONG()\n case 40 \x3d\x3e ELOOP()\n case 75 \x3d\x3e EOVERFLOW()\n case 79 \x3d\x3e EFTYPE()\n case 84 \x3d\x3e EILSEQ()\n case 88 \x3d\x3e ENOTSOCK()\n case 89 \x3d\x3e EDESTADDRREQ()\n case 90 \x3d\x3e EMSGSIZE()\n case 91 \x3d\x3e EPROTOTYPE()\n case 92 \x3d\x3e ENOPROTOOPT()\n case 93 \x3d\x3e EPROTONOSUPPORT()\n case 94 \x3d\x3e ESOCKTNOSUPPORT()\n case 95 \x3d\x3e ENOTSUP()\n case 97 \x3d\x3e EAFNOSUPPORT()\n case 98 \x3d\x3e EADDRINUSE()\n case 99 \x3d\x3e EADDRNOTAVAIL()\n case 100 \x3d\x3e ENETDOWN()\n case 101 \x3d\x3e ENETUNREACH()\n case 103 \x3d\x3e ECONNABORTED()\n case 104 \x3d\x3e ECONNRESET()\n case 105 \x3d\x3e ENOBUFS()\n case 106 \x3d\x3e EISCONN()\n case 107 \x3d\x3e ENOTCONN()\n case 110 \x3d\x3e ETIMEDOUT()\n case 111 \x3d\x3e ECONNREFUSED()\n case 113 \x3d\x3e EHOSTUNREACH()\n case 114 \x3d\x3e EALREADY()\n case 125 \x3d\x3e ECANCELED()\n\n case 200 \x3d\x3e EAI_ADDRFAMILY()\n case 201 \x3d\x3e EAI_AGAIN()\n case 202 \x3d\x3e EAI_BADFLAGS()\n case 203 \x3d\x3e EAI_BADHINTS()\n case 204 \x3d\x3e EAI_CANCELED()\n case 205 \x3d\x3e EAI_FAIL()\n case 206 \x3d\x3e EAI_FAMILY()\n case 207 \x3d\x3e EAI_MEMORY()\n case 208 \x3d\x3e EAI_NODATA()\n case 209 \x3d\x3e EAI_NONAME()\n case 210 \x3d\x3e EAI_OVERFLOW()\n case 211 \x3d\x3e EAI_PROTOCOL()\n case 212 \x3d\x3e EAI_SERVICE()\n case 213 \x3d\x3e EAI_SOCKTYPE()\n case 215 \x3d\x3e ECHARSET()\n case 216 \x3d\x3e ENONET()\n case 217 \x3d\x3e UNKNOWN()\n case 218 \x3d\x3e EOF()\n case 219 \x3d\x3e EUNATCH()\n case 220 \x3d\x3e ESHUTDOWN()\n\n case _ \x3d\x3e panic("Not a valid error code: " ++ show(number))\n}\n\nnamespace internal {\n\n extern llvm !!!MULTILINEMARKER!!!\n declare %Int @c_error_number(%Int)\n !!!MULTILINEMARKER!!!\n\n extern jsNode !!!MULTILINEMARKER!!!\n const os \x3d require(\'node:os\');\n\n /**\n * Maps the error code to a Effekt-stable (platform independent) numeric value.\n *\n * Tries to use most common errno integer values, but introduces fresh values (\x3e 200)\n * for those without common errno values.\n */\n function errorNumber(errno) {\n const errnoMap \x3d {\n [os.constants.errno.EPERM]: 1,\n [os.constants.errno.ENOENT]: 2,\n [os.constants.errno.ESRCH]: 3,\n [os.constants.errno.EINTR]: 4,\n [os.constants.errno.EIO]: 5,\n [os.constants.errno.ENXIO]: 6,\n [os.constants.errno.E2BIG]: 7,\n [os.constants.errno.EBADF]: 9,\n [os.constants.errno.EAGAIN]: 11,\n [os.constants.errno.ENOMEM]: 12,\n [os.constants.errno.EACCES]: 13,\n [os.constants.errno.EFAULT]: 14,\n [os.constants.errno.EBUSY]: 16,\n [os.constants.errno.EEXIST]: 17,\n [os.constants.errno.EXDEV]: 18,\n [os.constants.errno.ENODEV]: 19,\n [os.constants.errno.ENOTDIR]: 20,\n [os.constants.errno.EISDIR]: 21,\n [os.constants.errno.EINVAL]: 22,\n [os.constants.errno.ENFILE]: 23,\n [os.constants.errno.EMFILE]: 24,\n [os.constants.errno.ENOTTY]: 25,\n [os.constants.errno.ETXTBSY]: 26,\n [os.constants.errno.EFBIG]: 27,\n [os.constants.errno.ENOSPC]: 28,\n [os.constants.errno.ESPIPE]: 29,\n [os.constants.errno.EROFS]: 30,\n [os.constants.errno.EMLINK]: 31,\n [os.constants.errno.EPIPE]: 32,\n [os.constants.errno.ERANGE]: 34,\n [os.constants.errno.ENAMETOOLONG]: 36,\n [os.constants.errno.ELOOP]: 40,\n [os.constants.errno.EOVERFLOW]: 75,\n [os.constants.errno.EFTYPE]: 79,\n [os.constants.errno.EILSEQ]: 84,\n [os.constants.errno.ENOTSOCK]: 88,\n [os.constants.errno.EDESTADDRREQ]: 89,\n [os.constants.errno.EMSGSIZE]: 90,\n [os.constants.errno.EPROTOTYPE]: 91,\n [os.constants.errno.ENOPROTOOPT]: 92,\n [os.constants.errno.EPROTONOSUPPORT]: 93,\n [os.constants.errno.ESOCKTNOSUPPORT]: 94,\n [os.constants.errno.ENOTSUP]: 95,\n [os.constants.errno.EAFNOSUPPORT]: 97,\n [os.constants.errno.EADDRINUSE]: 98,\n [os.constants.errno.EADDRNOTAVAIL]: 99,\n [os.constants.errno.ENETDOWN]: 100,\n [os.constants.errno.ENETUNREACH]: 101,\n [os.constants.errno.ECONNABORTED]: 103,\n [os.constants.errno.ECONNRESET]: 104,\n [os.constants.errno.ENOBUFS]: 105,\n [os.constants.errno.EISCONN]: 106,\n [os.constants.errno.ENOTCONN]: 107,\n [os.constants.errno.ETIMEDOUT]: 110,\n [os.constants.errno.ECONNREFUSED]: 111,\n [os.constants.errno.EHOSTUNREACH]: 113,\n [os.constants.errno.EALREADY]: 114,\n [os.constants.errno.ECANCELED]: 125,\n [os.constants.errno.EAI_ADDRFAMILY]: 200,\n [os.constants.errno.EAI_AGAIN]: 201,\n [os.constants.errno.EAI_BADFLAGS]: 202,\n [os.constants.errno.EAI_BADHINTS]: 203,\n [os.constants.errno.EAI_CANCELED]: 204,\n [os.constants.errno.EAI_FAIL]: 205,\n [os.constants.errno.EAI_FAMILY]: 206,\n [os.constants.errno.EAI_MEMORY]: 207,\n [os.constants.errno.EAI_NODATA]: 208,\n [os.constants.errno.EAI_NONAME]: 209,\n [os.constants.errno.EAI_OVERFLOW]: 210,\n [os.constants.errno.EAI_PROTOCOL]: 211,\n [os.constants.errno.EAI_SERVICE]: 212,\n [os.constants.errno.EAI_SOCKTYPE]: 213,\n [os.constants.errno.ECHARSET]: 215,\n [os.constants.errno.ENONET]: 216,\n [os.constants.errno.UNKNOWN]: 217,\n [os.constants.errno.EOF]: 218,\n [os.constants.errno.EUNATCH]: 219,\n [os.constants.errno.ESHUTDOWN]: 220\n };\n return errnoMap[-errno] || -1; // Default to -1 for unknown error names\n }\n !!!MULTILINEMARKER!!!\n\n extern pure def errorNumber(errno: Int): Int \x3d\n jsNode "errorNumber(${errno})"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d call %Int @c_error_number(%Int ${errno})\n ret %Int %z\n !!!MULTILINEMARKER!!!\n\n}\n'); -Gv("common/io/filesystem.effekt","module io/filesystem\n\nimport bytes\n\nimport io\nimport io/error\n\n\n/**\n * Represents the file opening modes with their respective flags\n * Backends rely on the order of these\n */\ntype Mode {\n // Most common modes\n ReadOnly() // 'r' exception if does not exist\n WriteOnly() // 'w' created if does not exist, truncated if exists\n AppendOnly() // 'a' created if does not exist\n\n // Other modes\n ReadWrite() // 'w+' created if does not exist, truncated if exists\n ReadAppend() // 'a+' created if does not exist\n AppendExclusive() // 'ax' created if does not exist, fails if exists\n ReadAppendExclusive() // 'ax+' created if does not exist, fails if exists\n AppendSync() // 'as' created if does not exist, append in synchronous mode\n ReadAppendSync() // 'as+' created if does not exist, append in synchronous mode\n ReadSync() // 'rs' exception if does not exist, read in synchronous mode\n ReadWriteSync() // 'rs+' exception if does not exist, read/write in synchronous mode\n WriteExclusive() // 'wx' created if does not exist, truncated if exists, fails if exists\n ReadWriteExclusive() // 'wx+' created if does not exist, truncated if exists, fails if exists\n}\n\n\n/**\n * A file descriptor. Should not be inspected.\n */\ntype File \x3d Int\n\n\n/**\n * Reads a file at given path as utf8 encoded string.\n */\ndef readFile(path: String): String / Exception[IOError] \x3d {\n val fd \x3d open(path, ReadOnly());\n with on[IOError].finalize { close(fd) }\n\n val readSize \x3d 1048576 // 1MB\n var size \x3d readSize\n var buffer \x3d bytes(size)\n var offset \x3d 0;\n\n def go(): String \x3d {\n read(fd, buffer.slice(offset, min(readSize, size - offset)), -1) match {\n case 0 \x3d\x3e\n buffer.slice(0, offset).toUTF8\n case n and n \x3c 0 \x3d\x3e panic(\"Error!\")\n case n \x3d\x3e\n offset \x3d offset + n\n\n // we are at maximum capacity\n if (n \x3d\x3d readSize \x26\x26 (offset + readSize) \x3e size) {\n val newSize \x3d size * 2\n val newBuffer \x3d bytes(newSize)\n copy(buffer, newBuffer, 0, 0, size)\n buffer \x3d newBuffer\n size \x3d newSize\n }\n go()\n }\n }\n\n go()\n}\n\n/**\n * Writes the (utf8 encoded) string `contents` into the specified file.\n */\ndef writeFile(path: String, contents: String): Unit / Exception[IOError] \x3d {\n val fd \x3d open(path, WriteOnly());\n with on[IOError].finalize { close(fd) }\n\n val writeSize \x3d 1048576 // 1MB\n\n // this induces a memcpy that is not strictly necessary, since we use the buffer read-only\n val buffer \x3d contents.fromUTF8\n val size \x3d buffer.size\n\n var offset \x3d 0;\n def remaining() \x3d size - offset\n\n def go(): Unit \x3d\n write(fd, buffer.slice(offset, min(writeSize, remaining())), -1) match {\n case 0 \x3d\x3e ()\n case n and n \x3c 0 \x3d\x3e panic(\"Error!\")\n case n \x3d\x3e\n offset \x3d offset + n;\n if (remaining() \x3e 0) go()\n }\n\n go()\n}\n\n\n/**\n * An abstract interface applications can program against.\n *\n * Can be interpreted with the `filesystem` handler, or virtualized etc.\n *\n * See example below.\n */\ninterface Files {\n def readFile(path: String): String\n def writeFile(path: String, contents: String): Unit\n}\n\n/**\n * Using the file system via node.js\n */\ndef filesystem[R] { program: \x3d\x3e R / Files }: R / Exception[IOError] \x3d // TODO move Exception to be bidirectional\n try { program() }\n with Files {\n def readFile(path) \x3d resume(readFile(path))\n def writeFile(path, contents) \x3d resume(writeFile(path, contents))\n }\n\n\ndef open(path: String, mode: Mode): File / Exception[IOError] \x3d\n internal::checkResult(internal::open(path, mode))\n\ndef read(fd: File, buffer: Bytes, offset: Int): Int / Exception[IOError] \x3d\n internal::checkResult(internal::read(fd, buffer, offset))\n\ndef write(fd: File, buffer: Bytes, offset: Int): Int / Exception[IOError] \x3d\n internal::checkResult(internal::write(fd, buffer, offset))\n\ndef close(fd: File): Unit / Exception[IOError] \x3d {\n internal::checkResult(internal::close(fd)); ()\n}\n\nnamespace internal {\n\n extern js !!!MULTILINEMARKER!!!\n function modeName(mode) {\n switch (mode.__tag) {\n case 0: // ReadOnly()\n return 'r';\n case 1: // WriteOnly()\n return 'w';\n case 2: // AppendOnly()\n return 'a';\n case 3: // ReadWrite()\n return 'w+';\n case 4: // ReadAppend()\n return 'a+';\n case 5: // AppendExclusive()\n return 'ax';\n case 6: // ReadAppendExclusive()\n return 'ax+';\n case 7: // AppendSync()\n return 'as';\n case 8: // ReadAppendSync()\n return 'as+';\n case 9: // ReadSync()\n return 'rs';\n case 10: // ReadWriteSync()\n return 'rs+';\n case 11: // WriteExclusive()\n return 'wx';\n case 12: // ReadWriteExclusive()\n return 'wx+';\n default:\n // Invalid tag value\n return null;\n }\n }\n\n /**\n * Nodejs file operations expect buffers, but we represent buffers as typed arrays.\n * This function converts between the two without copying.\n */\n function toBuffer(buffer) {\n return Buffer.from(buffer.buffer, buffer.byteOffset, buffer.byteLength)\n }\n !!!MULTILINEMARKER!!!\n\n extern jsNode !!!MULTILINEMARKER!!!\n const fs \x3d require(\"fs\");\n\n function open(path, mode, callback) {\n fs.open(path, modeName(mode), (err, fd) \x3d\x3e {\n if (err) { callback(err.errno) } else { callback(fd) }\n })\n }\n\n function read(fd, buffer, offset, callback) {\n let position \x3d offset \x3d\x3d\x3d -1 ? null : offset;\n fs.read(fd, toBuffer(buffer), 0, buffer.length, position, (err, bytesRead) \x3d\x3e {\n if (err) { callback(err.errno) } else { callback(bytesRead) }\n })\n }\n\n function write(fd, buffer, offset, callback) {\n let position \x3d offset \x3d\x3d\x3d -1 ? null : offset;\n fs.write(fd, toBuffer(buffer), 0, buffer.length, position, (err, bytesWritten) \x3d\x3e {\n if (err) { callback(err.errno) } else { callback(bytesWritten) }\n })\n }\n\n function close(fd, callback) {\n fs.close(fd, (err) \x3d\x3e {\n if (err) { callback(err.errno) } else { callback(0) }\n })\n }\n !!!MULTILINEMARKER!!!\n\n extern llvm !!!MULTILINEMARKER!!!\n declare void @c_fs_open(%Pos, %Pos, %Stack)\n declare void @c_fs_read(%Int, %Pos, %Int, %Stack)\n declare void @c_fs_write(%Int, %Pos, %Int, %Stack)\n declare void @c_fs_close(%Int, %Stack)\n !!!MULTILINEMARKER!!!\n\n extern async def open(path: String, mode: Mode): Int \x3d\n jsNode \"$effekt.callcc(callback \x3d\x3e open(${path}, ${mode}, callback))\"\n llvm !!!MULTILINEMARKER!!!\n call void @c_fs_open(%Pos ${path}, %Pos ${mode}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\n extern async def read(fd: Int, buffer: Bytes, offset: Int): Int \x3d\n jsNode \"$effekt.callcc(callback \x3d\x3e read(${fd}, ${buffer}, ${offset}, callback))\"\n llvm !!!MULTILINEMARKER!!!\n call void @c_fs_read(%Int ${fd}, %Pos ${buffer}, %Int ${offset}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\n extern async def write(fd: Int, buffer: Bytes, offset: Int): Int \x3d\n jsNode \"$effekt.callcc(callback \x3d\x3e write(${fd}, ${buffer}, ${offset}, callback))\"\n llvm !!!MULTILINEMARKER!!!\n call void @c_fs_write(%Int ${fd}, %Pos ${buffer}, %Int ${offset}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\n extern async def close(fd: Int): Int \x3d\n jsNode \"$effekt.callcc(callback \x3d\x3e close(${fd}, callback))\"\n llvm !!!MULTILINEMARKER!!!\n call void @c_fs_close(%Int ${fd}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\n def checkResult(result: Int): Int / Exception[IOError] \x3d\n if (result \x3c 0) {\n val ioError \x3d fromNumber(internal::errorNumber(result));\n do raise[IOError](ioError, message(ioError))\n } else {\n result\n }\n}\n\nnamespace examples {\n\n // Example illustrating using abstract files interface\n // and interpreting it into asynchronous IO\n def copy(from: String, to: String): Unit / Files \x3d {\n val contents \x3d do readFile(from)\n do writeFile(to, contents)\n }\n\n def main() \x3d {\n with on[IOError].panic;\n with filesystem;\n\n copy(\"README.md\", \"out/test.md\")\n }\n}\n"); -Gv("common/io/console.effekt",'module io/console\n\nimport io\n\ninterface Console {\n def readLine(): String\n def writeLine(content: String): Unit\n}\n\n/**\n * Handler for the console effect, using the Console available in js\n */\ndef console[R] { program: () \x3d\x3e R / Console }: R \x3d {\n val c \x3d js::newConsole()\n try {\n val r \x3d program()\n js::close(c)\n return r\n } with Console {\n def readLine() \x3d resume(js::readLine(c))\n def writeLine(message) \x3d resume(js::writeLine(c, message))\n }\n}\n\nnamespace js {\n\n extern jsNode !!!MULTILINEMARKER!!!\n const readline \x3d require(\'node:readline\');\n !!!MULTILINEMARKER!!!\n\n extern type JSConsole\n\n extern io def newConsole(): JSConsole \x3d\n jsNode !!!MULTILINEMARKER!!!readline.createInterface({\n input: process.stdin,\n output: process.stdout,\n })!!!MULTILINEMARKER!!!\n\n extern io def close(console: JSConsole): Unit \x3d\n jsNode "${console}.close()"\n\n extern async def readLine(console: JSConsole): String \x3d\n jsNode "$effekt.callcc(callback \x3d\x3e ${console}.once(\'line\', callback))"\n\n extern io def writeLine(console: JSConsole, message: String): Unit \x3d\n jsNode "${console}.output.write(${message} + \'\\\\n\')"\n}\n\nnamespace examples {\n\n def greeter() \x3d {\n do writeLine("What\'s your name?")\n val name \x3d do readLine();\n do writeLine("Hi " ++ name ++ ", nice to meet you!")\n }\n\n def main() \x3d {\n with console;\n greeter()\n }\n\n}\n'); -Gv("common/io/time.effekt",'module io/time\n\nextern llvm !!!MULTILINEMARKER!!!\n declare void @c_timer_start(%Int, %Stack)\n!!!MULTILINEMARKER!!!\n\nextern async def wait(millis: Int): Unit \x3d\n js "$effekt.callcc(callback \x3d\x3e setTimeout(() \x3d\x3e callback($effekt.unit), ${millis}))"\n llvm !!!MULTILINEMARKER!!!\n call void @c_timer_start(%Int ${millis}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n');Gv("common/dequeue.effekt",'module dequeue\n\n\n// An implementation of a functional dequeue, using Okasaki\'s\n// bankers dequeue implementation.\n//\n// Translation from the Haskell implementation:\n// https://hackage.haskell.org/package/dequeue-0.1.12/docs/src/Data-Dequeue.html#Dequeue\nrecord Dequeue[R](front: List[R], frontSize: Int, rear: List[R], rearSize: Int)\n\ndef emptyQueue[R](): Dequeue[R] \x3d Dequeue(Nil(), 0, Nil(), 0)\n\ndef isEmpty[R](dq: Dequeue[R]): Bool \x3d dq match {\n case Dequeue(f, fs, r, rs) \x3d\x3e (fs \x3d\x3d 0) \x26\x26 (rs \x3d\x3d 0)\n}\n\ndef size[R](dq: Dequeue[R]): Int \x3d dq match {\n case Dequeue(f, fs, r, rs) \x3d\x3e fs + rs\n}\n\ndef first[R](dq: Dequeue[R]): Option[R] \x3d dq match {\n case Dequeue(f, fs, r, rs) \x3d\x3e\n if ((fs \x3d\x3d 0) \x26\x26 (rs \x3d\x3d 1)) { r.headOption }\n else { f.headOption }\n}\n\ndef last[R](dq: Dequeue[R]): Option[R] \x3d dq match {\n case Dequeue(f, fs, r, rs) \x3d\x3e\n if ((fs \x3d\x3d 1) \x26\x26 (rs \x3d\x3d 0)) { f.headOption }\n else { r.headOption }\n}\n\ndef check[R](dq: Dequeue[R]): Dequeue[R] \x3d dq match {\n case Dequeue(f, fs, r, rs) \x3d\x3e\n val c \x3d 4;\n val size1 \x3d (fs + rs) / 2;\n val size2 \x3d (fs + rs) - size1;\n\n if (fs \x3e c * rs + 1) {\n val front \x3d f.take(size1);\n val rear \x3d r.append(f.drop(size1).reverse);\n Dequeue(front, size1, rear, size2)\n } else if (rs \x3e c * fs + 1) {\n val front \x3d f.append(r.drop(size1).reverse);\n val rear \x3d r.take(size1);\n Dequeue(front, size2, rear, size1)\n } else {\n dq\n }\n}\n\ndef pushFront[R](dq: Dequeue[R], el: R): Dequeue[R] \x3d dq match {\n case Dequeue(f, fs, r, rs) \x3d\x3e Dequeue(Cons(el, f), fs + 1, r, rs).check\n}\n\ndef popFront[R](dq: Dequeue[R]): Option[(R, Dequeue[R])] \x3d dq match {\n case Dequeue(Nil(), fs, Cons(x, Nil()), rs) \x3d\x3e\n Some((x, emptyQueue()))\n case Dequeue(Nil(), fs, r, rs) \x3d\x3e\n None()\n case Dequeue(Cons(x, rest), fs, r, rs) \x3d\x3e\n Some((x, Dequeue(rest, fs - 1, r, rs).check))\n}\n\ndef pushBack[R](dq: Dequeue[R], el: R): Dequeue[R] \x3d dq match {\n case Dequeue(f, fs, r, rs) \x3d\x3e Dequeue(f, fs, Cons(el, r), rs + 1).check\n}\n\ndef popBack[R](dq: Dequeue[R]): Option[(R, Dequeue[R])] \x3d dq match {\n case Dequeue(Cons(x, Nil()), fs, Nil(), rs) \x3d\x3e\n Some((x, emptyQueue()))\n case Dequeue(f, fs, Nil(), rs) \x3d\x3e\n None()\n case Dequeue(f, fs, Cons(x, rest), rs) \x3d\x3e\n Some((x, Dequeue(f, fs, rest, rs - 1).check))\n}\n\n\ndef show[A](d: Dequeue[A]) { showA: A \x3d\x3e String }: String \x3d {\n val Dequeue(front, frontSize, rear, rearSize) \x3d d;\n "Dequeue(" ++ show(front){showA} ++ ", " ++ show(frontSize) ++ ", " ++\n show(rear){showA} ++ ", " ++ show(rearSize) ++ ")"\n}\ndef show(l: Dequeue[Int]): String \x3d show(l) { e \x3d\x3e show(e) }\ndef show(l: Dequeue[Double]): String \x3d show(l) { e \x3d\x3e show(e) }\ndef show(l: Dequeue[Bool]): String \x3d show(l) { e \x3d\x3e show(e) }\ndef show(l: Dequeue[String]): String \x3d show(l) { e \x3d\x3e e }\n\ndef println(l: Dequeue[Int]): Unit \x3d println(show(l))\ndef println(l: Dequeue[Double]): Unit \x3d println(show(l))\ndef println(l: Dequeue[Bool]): Unit \x3d println(show(l))\ndef println(l: Dequeue[String]): Unit \x3d println(show(l))\n'); Gv("common/exception.effekt",'module exception\n\nimport effekt\n\n// Exceptions\n// \x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\n\ninterface Exception[E] {\n def raise(exception: E, msg: String): Nothing\n}\n\ndef raise[A, E](exception: E, msg: String): A / Exception[E] \x3d\n do raise(exception, msg) match {}\n\n/**\n * Used as a type for `Exception` in functions which expect a non-empty\n * container (e.g. option or list).\n */\nrecord MissingValue()\n\ndef missingValue(): Nothing / Exception[MissingValue] \x3d\n do raise(MissingValue(), "Missing value.")\n\n/**\n * Used as a type for `Exception` in functions where an index can be out of bounds.\n */\nrecord OutOfBounds()\n\n/**\n * Unexpected runtime exceptions that can be caught.\n */\nrecord RuntimeError()\n\ndef raise[A](msg: String): A / Exception[RuntimeError] \x3d\n do raise(RuntimeError(), msg) match {}\n\n/**\n * Used as a type for `Exception` in functions which expect the input\n * to be formatted in a specific way.\n */\nrecord WrongFormat()\n\ndef wrongFormat(): Nothing / Exception[WrongFormat] \x3d\n do raise(WrongFormat(), "Wrong format.")\n\ndef wrongFormat(msg: String): Nothing / Exception[WrongFormat] \x3d\n do raise(WrongFormat(), msg)\n\n\n/**\n * A fatal runtime error that cannot be caught\n */\nextern io def panic[R](msg: String): R \x3d\n js "(function() { throw ${msg} })()"\n chez "(raise ${msg})"\n ml "raise Fail ${msg}"\n llvm !!!MULTILINEMARKER!!!\n call void @c_io_println_String(%Pos ${msg})\n call void @exit(i32 1)\n ret %Pos zeroinitializer ; Unit\n !!!MULTILINEMARKER!!!\n\n\n// Exception Handlers\n// \x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\n\n\n/**\n * Converts exceptions of (static) type E to an uncatchable panic that aborts the program\n */\ndef panicOn[E, T] { prog: \x3d\x3e T / Exception[E] }: T \x3d\n try { prog() } with Exception[E] { def raise(exception: E, msg: String) \x3d panic(msg) }\n\n/**\n * Reports exceptions of (static) type E to the console\n */\ndef report[E] { prog: \x3d\x3e Unit / Exception[E] }: Unit \x3d\n try { prog() } with Exception[E] { def raise(exception: E, msg: String) \x3d println(msg) }\n\n/**\n * Ignores exceptions of (static) type E\n */\ndef ignore[E] { prog: \x3d\x3e Unit / Exception[E] }: Unit \x3d\n try { prog() } with Exception[E] { def raise(exception: E, msg: String) \x3d () }\n\n/**\n * Use the default value to handle the exception of type E\n */\ndef default[E, T] { default: \x3d\x3e T } { prog: \x3d\x3e T / Exception[E] }: T \x3d\n try { prog() } with Exception[E] { def raise(exception: E, msg: String) \x3d default() }\n\n/**\n * Runs the finalizer and rethrows E\n */\ndef finalize[E, T] { finalizer: \x3d\x3e Unit } { prog: \x3d\x3e T / Exception[E] }: T / Exception[E] \x3d\n try { val res \x3d prog(); finalizer(); res } with Exception[E] {\n def raise(exception: E, msg: String) \x3d { finalizer(); do raise(exception, msg) }\n }\n\n/**\n * A proxy value to enable partial type applications, such as:\n *\n * ```\n * with on[MissingValue].ignore; ...\n * ```\n */\nrecord on[E]()\n\ndef ignore[E](proxy: on[E]) { prog: \x3d\x3e Unit / Exception[E] }: Unit \x3d\n ignore[E] {prog}\n\ndef default[E, T](proxy: on[E]) { d: \x3d\x3e T } { prog: \x3d\x3e T / Exception[E] }: T \x3d\n default[E, T] {d} {prog}\n\ndef panic[E, T](proxy: on[E]) { prog: \x3d\x3e T / Exception[E] }: T \x3d\n panicOn[E, T] {prog}\n\ndef report[E](proxy: on[E]) { prog: \x3d\x3e Unit / Exception[E] }: Unit \x3d\n report[E] {prog}\n\ndef finalize[E, T](proxy: on[E]) { finalizer: \x3d\x3e Unit } { prog: \x3d\x3e T / Exception[E] }: T / Exception[E] \x3d\n finalize[E, T] {finalizer} {prog}'); -Gv("common/result.effekt",'module result\n\nimport effekt\nimport option\nimport exception\n\n/**\n * Represents the result of a potentially failing computation.\n * It is the "reification" of the Exception[E] effect.\n */\ntype Result[A, E] {\n Error(exception: E, msg: String);\n Success(a: A)\n}\n\n/**\n * Represent ("reify") the result of a potentially failing computation.\n */\ndef result[A, E] { f: \x3d\x3e A / Exception[E] }: Result[A, E] \x3d try {\n Success(f())\n} with Exception[E] {\n def raise(exc, msg) \x3d Error(exc, msg)\n}\ndef result[A, E](proxy: on[E]) { f: \x3d\x3e A / Exception[E] }: Result[A, E] \x3d try {\n Success(f())\n} with Exception[E] {\n def raise(exc, msg) \x3d Error(exc, msg)\n}\n\n/**\n * Extracts the value of a result, if available\n * Monadic "reflection"\n */\ndef value[A, E](r: Result[A, E]): A / Exception[E] \x3d r match {\n case Success(a) \x3d\x3e a\n case Error(exc, msg) \x3d\x3e do raise(exc, msg)\n}\n\n/**\n * Converts a result to an option forgetting the error details\n */\ndef toOption[A, E](r: Result[A, E]): Option[A] \x3d r match {\n case Success(a) \x3d\x3e Some(a)\n case Error(exc, msg) \x3d\x3e None()\n}\n'); -Gv("common/io.effekt",'module io\n\nimport ref\nimport queue\n\n// Event Loop\n// ----------\n\ntype Task[T] \x3d () \x3d\x3e T at {io, async, global}\n\nextern llvm !!!MULTILINEMARKER!!!\n declare void @c_yield(%Stack)\n!!!MULTILINEMARKER!!!\n\nextern async def spawn(task: Task[Unit]): Unit \x3d\n js "$effekt.callcc(callback \x3d\x3e { setTimeout(() \x3d\x3e callback($effekt.unit), 0); ${task}().run()})"\n llvm !!!MULTILINEMARKER!!!\n call void @c_yield(%Stack %stack)\n call void @run(%Neg ${task})\n ret void\n !!!MULTILINEMARKER!!!\n\nextern async def yield(): Unit \x3d\n js "$effekt.callcc(callback \x3d\x3e setTimeout(() \x3d\x3e callback($effekt.unit), 0))"\n llvm !!!MULTILINEMARKER!!!\n call void @c_yield(%Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\nextern async def abort(): Nothing \x3d\n js "$effekt.callcc(callback \x3d\x3e { return })"\n llvm !!!MULTILINEMARKER!!!\n call void @eraseStack(%Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\n\n// Promises\n// --------\n\nextern type Promise[T]\n // \x3d js "{resolve: \u0192, promise: Promise}"\n // \x3d llvm "{tag: 0, obj: Promise*}"\n\ndef promise[T](task: Task[T]): Promise[T] \x3d {\n val p \x3d promise::make[T]();\n spawn(box { p.resolve(task()) });\n return p\n}\n\nextern llvm !!!MULTILINEMARKER!!!\n declare %Pos @c_promise_make()\n declare void @c_promise_resolve(%Pos, %Pos)\n declare void @c_promise_await(%Pos, %Neg)\n!!!MULTILINEMARKER!!!\n\nextern async def await[T](promise: Promise[T]): T \x3d\n js "$effekt.callcc(callback \x3d\x3e ${promise}.promise.then(res \x3d\x3e callback(res)))"\n llvm !!!MULTILINEMARKER!!!\n call void @c_promise_await(%Pos ${promise}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\nextern async def resolve[T](promise: Promise[T], value: T): Unit \x3d\n js "$effekt.callcc(callback \x3d\x3e { ${promise}.resolve(${value}); callback($effekt.unit)})"\n llvm !!!MULTILINEMARKER!!!\n call void @c_promise_resolve(%Pos ${promise}, %Pos ${value}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\nnamespace promise {\n extern js !!!MULTILINEMARKER!!!\n function promise$make() {\n let resolve;\n const promise \x3d new Promise((res, rej) \x3d\x3e {\n resolve \x3d res;\n });\n return { resolve: resolve, promise: promise };\n }\n !!!MULTILINEMARKER!!!\n\n extern io def make[T](): Promise[T] \x3d\n js "promise$make()"\n llvm !!!MULTILINEMARKER!!!\n %promise \x3d call %Pos @c_promise_make()\n ret %Pos %promise\n !!!MULTILINEMARKER!!!\n}\n'); +Gv("common/option.effekt",'module option\n\nimport effekt\nimport exception\n\ntype Option[A] {\n None();\n Some(value: A)\n}\n\ndef isDefined[A](self: Option[A]): Bool \x3d self match {\n case None() \x3d\x3e false\n case Some(v) \x3d\x3e true\n}\n\ndef isEmpty[A](self: Option[A]): Bool \x3d\n self.isDefined.not\n\ndef orElse[A](self: Option[A]) { that: \x3d\x3e Option[A] }: Option[A] \x3d self match {\n case None() \x3d\x3e that()\n case Some(v) \x3d\x3e Some(v)\n}\n\ndef getOrElse[A](self: Option[A]) { that: \x3d\x3e A }: A \x3d self match {\n case None() \x3d\x3e that()\n case Some(v) \x3d\x3e v\n}\n\ndef map[A, B](self: Option[A]) { f: A \x3d\x3e B }: Option[B] \x3d self match {\n case None() \x3d\x3e None()\n case Some(v) \x3d\x3e Some(f(v))\n}\n\ndef foreach[A](self: Option[A]) { f: A \x3d\x3e Unit }: Unit \x3d self match {\n case None() \x3d\x3e ()\n case Some(v) \x3d\x3e f(v)\n}\n\ndef value[A](self: Option[A]): A / Exception[MissingValue] \x3d self match {\n case None() \x3d\x3e do raise(MissingValue(), "Trying to get the value of an empty option")\n case Some(v) \x3d\x3e v\n}\n\ndef option[A] { p: \x3d\x3e A / Exception[MissingValue] }: Option[A] \x3d\n try { Some(p()) }\n with Exception[MissingValue] { def raise(_, _) \x3d None() }\n\ndef option[A, E](proxy: on[E]) { p: \x3d\x3e A / Exception[E] }: Option[A] \x3d\n try { Some(p()) }\n with Exception[E] { def raise(_, _) \x3d None() }\n\n// Interop with FFI\n// ---------------\n// These functions should only be used by libraries that interface with FFI\ndef undefinedToOption[A](value: A): Option[A] \x3d\n if (value.isUndefined) { None() } else { Some(value) }\n\n\n// Show Instances\n// --------------\n\ndef show[A](o: Option[A]) { showA: A \x3d\x3e String }: String \x3d o match {\n case None() \x3d\x3e "None()"\n case Some(v) \x3d\x3e "Some(" ++ showA(v) ++ ")"\n}\ndef show(o: Option[Int]): String \x3d show(o) { e \x3d\x3e show(e) }\ndef show(o: Option[Double]): String \x3d show(o) { e \x3d\x3e show(e) }\ndef show(o: Option[Bool]): String \x3d show(o) { e \x3d\x3e show(e) }\n\ndef println(o: Option[Int]): Unit \x3d println(show(o))\ndef println(o: Option[Double]): Unit \x3d println(show(o))\ndef println(o: Option[Bool]): Unit \x3d println(show(o))\n'); Gv("common/bench.effekt",'module bench\n\n/**\n * The current time (since UNIX Epoch) in nanoseconds.\n *\n * The actual precision varies across the different backends.\n * - js: Milliseconds\n * - chez: Microseconds\n * - ml: Microseconds\n */\nextern io def timestamp(): Int \x3d\n js "Date.now() * 1000000"\n chez "(timestamp)"\n ml "IntInf.toInt (Time.toNanoseconds (Time.now ()))"\n llvm !!!MULTILINEMARKER!!!\n %time_ptr \x3d alloca { i64, i64 }\n call i32 @clock_gettime(i32 0, ptr %time_ptr)\n %time \x3d load {i64, i64}, ptr %time_ptr\n %time_seconds \x3d extractvalue {i64, i64} %time, 0\n %time_nanoseconds \x3d extractvalue {i64, i64} %time, 1\n %time_seconds_nanoseconds \x3d mul nsw i64 %time_seconds, 1000000000\n %result \x3d add nsw i64 %time_seconds_nanoseconds, %time_nanoseconds\n ret %Int %result\n !!!MULTILINEMARKER!!!\n\nextern llvm !!!MULTILINEMARKER!!!\n declare i32 @clock_gettime(i32, ptr)\n!!!MULTILINEMARKER!!!\n\n/**\n * High-precision timestamp in nanoseconds that should be for measurements.\n *\n * This timestamp should only be used for **relative** measurements,\n * as gives no guarantees on the absolute time (unlike a UNIX timestamp).\n */\nextern io def relativeTimestamp(): Int \x3d\n js "Math.round(performance.now() * 1000000)"\n default { timestamp() }\n\n/**\n * Runs the block and returns the time in nanoseconds\n */\ndef timed { block: \x3d\x3e Unit }: Int \x3d {\n val before \x3d relativeTimestamp()\n block()\n val after \x3d relativeTimestamp()\n after - before\n}\n\ndef measure(warmup: Int, iterations: Int) { block: \x3d\x3e Unit }: Unit \x3d {\n def run(n: Int, report: Bool): Unit \x3d {\n if (n \x3c\x3d 0) { () } else {\n val time \x3d timed { block() };\n if (report) { println(time) } else { () };\n run(n - 1, report)\n }\n }\n run(warmup, false)\n run(iterations, true)\n}\n'); +Gv("common/process.effekt",'module process\n\nextern io def exit(errorCode: Int): Nothing \x3d\n js "(function() { process.exit(${errorCode}) })()"\n llvm !!!MULTILINEMARKER!!!\n call void @exit(i64 ${errorCode})\n ret %Pos zeroinitializer\n !!!MULTILINEMARKER!!!\n chez "(exit ${errorCode})"\n ml "(Posix.Process.exit (Word8.fromInt ${errorCode}))"\n');Gv("common/io.effekt",'module io\n\nimport ref\nimport queue\n\n// Event Loop\n// ----------\n\ntype Task[T] \x3d () \x3d\x3e T at {io, async, global}\n\nextern llvm !!!MULTILINEMARKER!!!\n declare void @c_yield(%Stack)\n!!!MULTILINEMARKER!!!\n\nextern async def spawn(task: Task[Unit]): Unit \x3d\n js "$effekt.callcc(callback \x3d\x3e { setTimeout(() \x3d\x3e callback($effekt.unit), 0); ${task}().run()})"\n llvm !!!MULTILINEMARKER!!!\n call void @c_yield(%Stack %stack)\n call void @run(%Neg ${task})\n ret void\n !!!MULTILINEMARKER!!!\n\nextern async def yield(): Unit \x3d\n js "$effekt.callcc(callback \x3d\x3e setTimeout(() \x3d\x3e callback($effekt.unit), 0))"\n llvm !!!MULTILINEMARKER!!!\n call void @c_yield(%Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\nextern async def abort(): Nothing \x3d\n js "$effekt.callcc(callback \x3d\x3e { return })"\n llvm !!!MULTILINEMARKER!!!\n call void @eraseStack(%Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\n\n// Promises\n// --------\n\nextern type Promise[T]\n // \x3d js "{resolve: \u0192, promise: Promise}"\n // \x3d llvm "{tag: 0, obj: Promise*}"\n\ndef promise[T](task: Task[T]): Promise[T] \x3d {\n val p \x3d promise::make[T]();\n spawn(box { p.resolve(task()) });\n return p\n}\n\nextern llvm !!!MULTILINEMARKER!!!\n declare %Pos @c_promise_make()\n declare void @c_promise_resolve(%Pos, %Pos)\n declare void @c_promise_await(%Pos, %Neg)\n!!!MULTILINEMARKER!!!\n\nextern async def await[T](promise: Promise[T]): T \x3d\n js "$effekt.callcc(callback \x3d\x3e ${promise}.promise.then(res \x3d\x3e callback(res)))"\n llvm !!!MULTILINEMARKER!!!\n call void @c_promise_await(%Pos ${promise}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\nextern async def resolve[T](promise: Promise[T], value: T): Unit \x3d\n js "$effekt.callcc(callback \x3d\x3e { ${promise}.resolve(${value}); callback($effekt.unit)})"\n llvm !!!MULTILINEMARKER!!!\n call void @c_promise_resolve(%Pos ${promise}, %Pos ${value}, %Stack %stack)\n ret void\n !!!MULTILINEMARKER!!!\n\nnamespace promise {\n extern js !!!MULTILINEMARKER!!!\n function promise$make() {\n let resolve;\n const promise \x3d new Promise((res, rej) \x3d\x3e {\n resolve \x3d res;\n });\n return { resolve: resolve, promise: promise };\n }\n !!!MULTILINEMARKER!!!\n\n extern io def make[T](): Promise[T] \x3d\n js "promise$make()"\n llvm !!!MULTILINEMARKER!!!\n %promise \x3d call %Pos @c_promise_make()\n ret %Pos %promise\n !!!MULTILINEMARKER!!!\n}\n'); Gv("common/queue.effekt","module queue\n\nimport array\n\n/**\n * Mutable, automatically resizing queue.\n */\ninterface Queue[T] {\n def empty?(): Bool\n\n def popFront(): Option[T]\n\n def popBack(): Option[T]\n\n def peekFront(): Option[T]\n\n def peekBack(): Option[T]\n\n def pushFront(el: T): Unit\n\n def pushBack(el: T): Unit\n}\n\n\ndef emptyQueue[T](): Queue[T] at {global} \x3d\n emptyQueue[T](64)\n\ndef emptyQueue[T](initialCapacity: Int): Queue[T] at {global} \x3d {\n\n var contents in global \x3d array[Option[T]](initialCapacity, None())\n var head in global \x3d 0\n var tail in global \x3d 0\n var size in global \x3d 0\n var capacity in global \x3d initialCapacity\n\n def remove(arr: Array[Option[T]], index: Int): Option[T] \x3d {\n with on[OutOfBounds].default { None() };\n val value \x3d arr.get(index);\n arr.set(index, None());\n value\n }\n\n def nonEmpty[T] { p: \x3d\x3e Option[T] / Exception[OutOfBounds] }: Option[T] \x3d\n if (size \x3c\x3d 0) None() else on[OutOfBounds].default { None() } { p() }\n\n // Exponential back-off\n def resizeTo(requiredSize: Int): Unit \x3d\n if (requiredSize \x3c\x3d capacity) () else {\n with on[OutOfBounds].ignore // should not happen\n\n val oldSize \x3d capacity\n val newSize \x3d capacity * 2\n val oldContents \x3d contents\n val newContents \x3d array::allocate[Option[T]](newSize)\n\n if (head \x3c tail) {\n // The queue does not wrap around; direct copy is possible.\n copy(oldContents, head, newContents, 0, size) // changed tail to size\n } else if (size \x3e 0) {\n // The queue wraps around; copy in two segments.\n copy(oldContents, head, newContents, 0, oldSize - head) // changed oldSize to oldSize - head\n copy(oldContents, 0, newContents, oldSize - head, tail) // changed oldSize - head to oldSize - head\n }\n\n contents \x3d newContents\n capacity \x3d newSize\n head \x3d 0\n tail \x3d oldSize\n }\n\n def queue \x3d new Queue[T] {\n def empty?() \x3d size \x3c\x3d 0\n\n def popFront() \x3d\n nonEmpty {\n val result \x3d contents.remove(head)\n head \x3d mod(head + 1, capacity)\n size \x3d size - 1\n result\n }\n\n def popBack() \x3d\n nonEmpty {\n tail \x3d mod(tail - 1 + capacity, capacity)\n val result \x3d contents.remove(tail)\n size \x3d size - 1\n result\n }\n\n def peekFront() \x3d nonEmpty { contents.get(head) }\n\n def peekBack() \x3d nonEmpty { contents.get(tail) }\n\n def pushFront(el: T) \x3d {\n resizeTo(size + 1);\n head \x3d mod(head - 1 + capacity, capacity);\n size \x3d size + 1;\n contents.unsafeSet(head, Some(el))\n }\n\n def pushBack(el: T) \x3d {\n resizeTo(size + 1);\n contents.unsafeSet(tail, Some(el));\n size \x3d size + 1;\n tail \x3d mod(tail + 1, capacity)\n }\n }\n queue\n}\n\nnamespace examples {\n def main() \x3d {\n // queue with initial capacity 4\n def b \x3d emptyQueue[Int](4);\n println(b.empty?);\n b.pushFront(1);\n b.pushBack(2);\n b.pushFront(3);\n b.pushBack(4);\n // this will cause resizing:\n b.pushBack(5);\n b.pushBack(6);\n b.pushBack(7);\n b.pushBack(8);\n // and again:\n b.pushBack(9);\n\n println(b.empty?);\n println(b.popFront()); // Some(3)\n println(b.popFront()); // Some(1)\n println(b.popFront()); // Some(2)\n println(b.popFront()); // Some(4)\n println(b.popFront()); // Some(5)\n println(b.popFront()); // Some(6)\n println(b.popFront()); // Some(7)\n println(b.popFront()); // Some(8)\n println(b.popFront()); // Some(9)\n println(b.popFront()); // None()\n }\n}\n"); -Gv("common/bytes.effekt",'module bytes\n\n/**\n * A memory managed, mutable, fixed-length buffer of bytes.\n */\nextern type Bytes\n // \x3d llvm "%Pos"\n // \x3d js "Uint8Array"\n\n/**\n * Allocates new bytes with the given `capacity`, setting its values to `0`.\n */\nextern io def bytes(capacity: Int): Bytes \x3d\n js "(new Uint8Array(${capacity}))"\n llvm !!!MULTILINEMARKER!!!\n %buf \x3d call %Pos @c_buffer_construct_uninitialized(i64 ${capacity})\n ret %Pos %buf\n !!!MULTILINEMARKER!!!\n\ndef copy(b: Bytes): Bytes \x3d {\n val len \x3d b.size\n val clone \x3d bytes(len)\n copy(b, clone, 0, 0, len)\n clone\n}\n\nextern io def copy(from: Bytes, to: Bytes, startFrom: Int, startTo: Int, length: Int): Unit \x3d\n js "bytes$copy(${from}, ${to}, ${startFrom}, ${startTo}, ${length})"\n llvm !!!MULTILINEMARKER!!!\n call void @c_buffer_copy(%Pos ${from}, %Pos ${to}, i64 ${startFrom}, i64 ${startTo}, i64 ${length})\n ; return Unit\n ret %Pos zeroinitializer\n !!!MULTILINEMARKER!!!\n\nextern pure def size(b: Bytes): Int \x3d\n js "${b}.length"\n llvm !!!MULTILINEMARKER!!!\n %size \x3d call i64 @c_buffer_length(%Pos ${b})\n ret i64 %size\n !!!MULTILINEMARKER!!!\n\nextern io def read(b: Bytes, index: Int): Byte \x3d\n js "(${b})[${index}]"\n llvm !!!MULTILINEMARKER!!!\n %byte \x3d call i8 @c_buffer_index(%Pos ${b}, i64 ${index})\n ret i8 %byte\n !!!MULTILINEMARKER!!!\n\n// TODO should return the number of bytes written.\nextern io def write(b: Bytes, index: Int, value: Byte): Unit \x3d\n js "bytes$set(${b}, ${index}, ${value})"\n llvm !!!MULTILINEMARKER!!!\n call void @c_buffer_set(%Pos ${b}, i64 ${index}, i8 ${value})\n ; return Unit\n ret %Pos zeroinitializer\n !!!MULTILINEMARKER!!!\n\n/**\n * Returns an *aliased* slice of b starting at offset with the given length\n */\ndef slice(b: Bytes, offset: Int, length: Int): Bytes \x3d {\n def validOffset() \x3d offset \x3e\x3d 0 \x26\x26 offset \x3c b.size\n def validLength() \x3d length \x3e\x3d 0 \x26\x26 (offset + length) \x3c\x3d b.size\n if (validOffset() \x26\x26 validLength()) unsafe::slice(b, offset, length)\n else panic("Invalid slice of bytes (size: " ++ b.size.show ++ ", offset: " ++ offset.show ++ ", length: " ++ length.show ++ ")")\n}\n\n\n/**\n * Returns a view into the buffer, with the length truncated to n\n */\ndef truncated(b: Bytes, n: Int): Bytes \x3d\n b.slice(0, n)\n\nextern pure def fromUTF8(s: String): Bytes \x3d\n js "(new TextEncoder().encode(${s}))"\n llvm !!!MULTILINEMARKER!!!\n %copy \x3d call %Pos @c_buffer_clone(%Pos ${s})\n ret %Pos %copy\n !!!MULTILINEMARKER!!!\n\nextern pure def toUTF8(b: Bytes): String \x3d\n js "(new TextDecoder(\'utf-8\').decode(${b}))"\n // assuming the buffer is already in UTF-8\n llvm !!!MULTILINEMARKER!!!\n %copy \x3d call %Pos @c_buffer_clone(%Pos ${b})\n ret %Pos %copy\n !!!MULTILINEMARKER!!!\n\nnamespace unsafe {\n /**\n * Unsafe: offset and length are not checked.\n */\n extern io def slice(b: Bytes, offset: Int, length: Int): Bytes \x3d\n js "new Uint8Array(${b}.buffer, ${offset}, ${length})"\n llvm !!!MULTILINEMARKER!!!\n %buf \x3d call %Pos @c_buffer_slice(%Pos ${b}, i64 ${offset}, i64 ${length})\n ret %Pos %buf\n !!!MULTILINEMARKER!!!\n\n}\n\n\nextern js !!!MULTILINEMARKER!!!\n function bytes$set(bytes, index, value) {\n bytes[index] \x3d value;\n return $effekt.unit;\n }\n\n function bytes$clone(original) {\n let copy \x3d new Uint8Array(original.length);\n copy.set(original);\n return copy;\n }\n\n function bytes$copy(from, to, startFrom, startTo, length) {\n // Check bounds\n if (startFrom + length \x3e from.length || startTo + length \x3e to.length) {\n throw new RangeError(\'Index out of bounds\');\n }\n\n // Create a subarray of \'from\' and set it into \'to\'\n to.set(from.subarray(startFrom, startFrom + length), startTo);\n}\n!!!MULTILINEMARKER!!!\n'); -Gv("common/process.effekt",'module process\n\nextern io def exit(errorCode: Int): Nothing \x3d\n js "(function() { process.exit(${errorCode}) })()"\n llvm !!!MULTILINEMARKER!!!\n call void @exit(i64 ${errorCode})\n ret %Pos zeroinitializer\n !!!MULTILINEMARKER!!!\n chez "(exit ${errorCode})"\n ml "(Posix.Process.exit (Word8.fromInt ${errorCode}))"\n');Gv("common/buffer.effekt",'module buffer\n\nimport array\n\n// TODO (in Effekt compiler)\n// - [ ] fix allocating into actually global region\n// - [ ] fix exceptions on objects\n// - [X] allow omitting braces after `at` for singleton regions\n\nrecord BufferOverflow()\n\n/**\n * Fixed-size ring buffers (queues) where one can write\n * elements to the head and read from the tail.\n */\ninterface Buffer[T] {\n /**\n * The remaining capacity\n */\n def capacity(): Int\n\n /**\n * Is this buffer full?\n */\n def full?(): Bool\n\n /**\n * Is this buffer empty?\n */\n def empty?(): Bool\n\n /**\n * Read an element from the tail of the buffer\n */\n def read(): Option[T]\n\n /**\n * Write an element to the head of the buffer\n */\n def write(el: T): Unit / Exception[BufferOverflow]\n}\n\ndef emptyBuffer[T](capacity: Int): Buffer[T] at {global} \x3d {\n if (capacity \x3d\x3d 1) refBuffer()\n else arrayBuffer(capacity)\n}\ndef arrayBuffer[T](initialCapacity: Int): Buffer[T] at {global} \x3d {\n // TODO allocate buffer (and array) into a region r.\n val contents \x3d emptyArray[T](initialCapacity)\n var head in global \x3d 0\n var tail in global \x3d 0\n\n def size(): Int \x3d\n if (tail \x3e\x3d head) { tail - head }\n else { initialCapacity - head + tail }\n\n def capacity(): Int \x3d initialCapacity - size()\n\n def buffer \x3d new Buffer[T] {\n def capacity() \x3d capacity()\n def full?() \x3d capacity() \x3c\x3d 0\n def empty?() \x3d size() \x3c\x3d 0\n def read() \x3d {\n if (buffer.empty?) None()\n else {\n val result: T \x3d contents.remove(head).getOrElse { \x3c\x3e };\n head \x3d mod(head + 1, initialCapacity)\n Some(result)\n }\n }\n def write(el: T) \x3d {\n if (buffer.full?) \x3c\x3e // raise(BufferOverflow())\n\n contents.put(tail, el)\n tail \x3d mod(tail + 1, initialCapacity)\n }\n }\n buffer\n}\ndef refBuffer[T](): Buffer[T] at {global} \x3d {\n var content: Option[T] in global \x3d None()\n new Buffer[T] {\n def capacity() \x3d if (content.isEmpty) 1 else 0\n def full?() \x3d content.isDefined\n def empty?() \x3d isEmpty(content)\n def read() \x3d {\n val res \x3d content\n content \x3d None()\n res\n }\n def write(el: T) \x3d content match {\n case Some(v) \x3d\x3e\n \x3c\x3e // do raise(BufferOverflow(), "Cannot read element from buffer")\n case None() \x3d\x3e\n content \x3d Some(el)\n }\n }\n}\n\nnamespace examples {\n def main() \x3d ignore[BufferOverflow] {\n // Buffer with capacity 1\n def b \x3d emptyBuffer[Int](1);\n println(b.capacity);\n println(b.full?);\n\n b.write(17);\n println(b.read());\n\n // buffer with capacity 3\n def ringbuffer \x3d emptyBuffer[Int](3);\n ringbuffer.write(1);\n ringbuffer.write(2);\n println(ringbuffer.read());\n ringbuffer.write(3);\n println(ringbuffer.read());\n println(ringbuffer.read());\n ringbuffer.write(4);\n ringbuffer.write(5);\n println(ringbuffer.read());\n println(ringbuffer.read());\n }\n}'); -Gv("common/array.effekt",'module array\n\nimport effekt\nimport exception\nimport list\n\n/**\n * A mutable 0-indexed fixed-sized array.\n */\nextern type Array[T]\n\n/**\n * Allocates a new array of size `size`, keeping its values _undefined_.\n * Prefer using `array` constructor instead to ensure that values are defined.\n */\nextern global def allocate[T](size: Int): Array[T] \x3d\n js "(new Array(${size}))"\n chez "(make-vector ${size})" // creates an array filled with 0s on CS\n llvm !!!MULTILINEMARKER!!!\n %z \x3d call %Pos @c_array_new(%Int ${size})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\n/**\n * Creates a new Array of size `size` filled with the value `init`\n */\nextern global def array[T](size: Int, init: T): Array[T] \x3d\n ml "Array.array (${size}, ${init})"\n default {\n val arr \x3d allocate[T](size);\n each(0, size) { i \x3d\x3e\n unsafeSet(arr, i, init)\n };\n arr\n }\n\n/**\n * Converts a List `list` to an Array\n */\ndef fromList[T](list: List[T]): Array[T] \x3d {\n val listSize \x3d list.size();\n val arr \x3d allocate(listSize);\n\n foreachIndex(list) { (i, head) \x3d\x3e\n arr.unsafeSet(i, head)\n }\n return arr;\n}\n\n/**\n * Gets the length of the array in constant time.\n */\nextern pure def size[T](arr: Array[T]): Int \x3d\n js "${arr}.length"\n chez "(vector-length ${arr})"\n ml "Array.length ${arr}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d call %Int @c_array_size(%Pos ${arr})\n ret %Int %z\n !!!MULTILINEMARKER!!!\n\n/**\n * Gets the element of the `arr` at given `index` in constant time.\n * Unchecked Precondition: `index` is in bounds (0 \u2264 index \x3c arr.size)\n *\n * Prefer using `get` instead.\n */\nextern global def unsafeGet[T](arr: Array[T], index: Int): T \x3d\n js "${arr}[${index}]"\n chez "(vector-ref ${arr} ${index})"\n ml "Array.sub (${arr}, ${index})"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d call %Pos @c_array_get(%Pos ${arr}, %Int ${index})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\nextern js !!!MULTILINEMARKER!!!\nfunction array$set(arr, index, value) {\n arr[index] \x3d value;\n return $effekt.unit\n}\n!!!MULTILINEMARKER!!!\n\n /**\n * Sets the element of the `arr` at given `index` to `value` in constant time.\n * Unchecked Precondition: `index` is in bounds (0 \u2264 index \x3c arr.size)\n *\n * Prefer using `set` instead.\n */\nextern global def unsafeSet[T](arr: Array[T], index: Int, value: T): Unit \x3d\n js "array$set(${arr}, ${index}, ${value})"\n chez "(begin (vector-set! ${arr} ${index} ${value}) #f)"\n ml "Array.update (${arr}, ${index}, ${value})"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d call %Pos @c_array_set(%Pos ${arr}, %Int ${index}, %Pos ${value})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\n/**\n * Creates a copy of `arr`\n */\ndef copy[T](arr: Array[T]): Array[T] \x3d {\n with on[OutOfBounds].default { \x3c\x3e }; // should not happen\n val len \x3d arr.size;\n val newArray \x3d allocate[T](len);\n copy[T](arr, 0, newArray, 0, len);\n newArray\n}\n\n/**\n * Copies `length`-many elements from `from` to `to`\n * starting at `start` (in `from`) and `offset` (in `to`)\n */\ndef copy[T](from: Array[T], start: Int, to: Array[T], offset: Int, length: Int): Unit / Exception[OutOfBounds] \x3d {\n val startValid \x3d start \x3e\x3d 0 \x26\x26 start + length \x3c\x3d from.size\n val offsetValid \x3d offset \x3e\x3d 0 \x26\x26 offset + length \x3c\x3d to.size\n\n def go(i: Int, j: Int, length: Int): Unit \x3d\n if (length \x3e 0) {\n to.unsafeSet(j, from.unsafeGet(i))\n go(i + 1, j + 1, length - 1)\n }\n\n if (startValid \x26\x26 offsetValid) go(start, offset, length)\n else do raise(OutOfBounds(), "Array index out of bounds, when copying")\n}\n\n// Derived operations:\n\n/**\n * Gets the element of the `arr` at given `index` in constant time,\n * throwing an `Exception[OutOfBounds]` unless `0 \u2264 index \x3c arr.size`.\n */\ndef get[T](arr: Array[T], index: Int): T / Exception[OutOfBounds] \x3d\n if (index \x3e\x3d 0 \x26\x26 index \x3c arr.size) arr.unsafeGet(index)\n else do raise(OutOfBounds(), "Array index out of bounds: " ++ show(index))\n\n/**\n * Sets the element of the `arr` at given `index` to `value` in constant time,\n * throwing an `Exception[OutOfBounds]` unless `0 \u2264 index \x3c arr.size`.\n */\ndef set[T](arr: Array[T], index: Int, value: T): Unit / Exception[OutOfBounds] \x3d\n if (index \x3e\x3d 0 \x26\x26 index \x3c arr.size) unsafeSet(arr, index, value)\n else do raise(OutOfBounds(), "Array index out of bounds: " ++ show(index))\n\n/**\n * Builds a new Array of size `size` from a computation `index` which gets an index\n * and returns a value that will be on that position in the resulting array\n */\ndef build[T](size: Int) { index: Int \x3d\x3e T }: Array[T] \x3d {\n val arr \x3d allocate[T](size);\n each(0, size) { i \x3d\x3e\n unsafeSet(arr, i, index(i))\n };\n arr\n}\n\n// Utility functions:\n\ndef toList[T](arr: Array[T]): List[T] \x3d {\n var i \x3d arr.size - 1;\n var l \x3d Nil[T]()\n while (i \x3e\x3d 0) {\n l \x3d Cons(arr.unsafeGet(i), l)\n i \x3d i - 1\n }\n l\n}\n\ndef foreach[T](arr: Array[T]){ action: T \x3d\x3e Unit }: Unit \x3d\n each(0, arr.size) { i \x3d\x3e\n val x: T \x3d arr.unsafeGet(i)\n action(x)\n }\n\ndef foreach[T](arr: Array[T]){ action: (T) {Control} \x3d\x3e Unit }: Unit \x3d\n each(0, arr.size) { (i) {label} \x3d\x3e\n val x: T \x3d arr.unsafeGet(i)\n action(x) {label}\n }\n\ndef foreachIndex[T](arr: Array[T]){ action: (Int, T) \x3d\x3e Unit }: Unit \x3d\n each(0, arr.size) { i \x3d\x3e\n val x: T \x3d arr.unsafeGet(i)\n action(i, x)\n }\n\ndef foreachIndex[T](arr: Array[T]){ action: (Int, T) {Control} \x3d\x3e Unit }: Unit \x3d\n each(0, arr.size) { (i) {label} \x3d\x3e\n val x: T \x3d arr.unsafeGet(i)\n action(i, x) {label}\n }\n\ndef sum(list: Array[Int]): Int \x3d {\n var acc \x3d 0\n list.foreach { x \x3d\x3e\n acc \x3d acc + x\n }\n acc\n}\n\n// Show Instances\n// --------------\n\ndef show[A](arr: Array[A]) { showA: A \x3d\x3e String }: String \x3d {\n var output \x3d "Array("\n val lastIndex \x3d arr.size - 1\n\n arr.foreachIndex { (index, a) \x3d\x3e\n if (index \x3d\x3d lastIndex) output \x3d output ++ showA(a)\n else output \x3d output ++ showA(a) ++ ", "\n }\n output \x3d output ++ ")"\n\n output\n}\ndef show(l: Array[Int]): String \x3d show(l) { e \x3d\x3e show(e) }\ndef show(l: Array[Double]): String \x3d show(l) { e \x3d\x3e show(e) }\ndef show(l: Array[Bool]): String \x3d show(l) { e \x3d\x3e show(e) }\ndef show(l: Array[String]): String \x3d show(l) { e \x3d\x3e e }\n\ndef println(l: Array[Int]): Unit \x3d println(show(l))\ndef println(l: Array[Double]): Unit \x3d println(show(l))\ndef println(l: Array[Bool]): Unit \x3d println(show(l))\ndef println(l: Array[String]): Unit \x3d println(show(l))\n'); -Gv("common/option.effekt",'module option\n\nimport effekt\nimport exception\n\ntype Option[A] {\n None();\n Some(value: A)\n}\n\ndef isDefined[A](self: Option[A]): Bool \x3d self match {\n case None() \x3d\x3e false\n case Some(v) \x3d\x3e true\n}\n\ndef isEmpty[A](self: Option[A]): Bool \x3d\n self.isDefined.not\n\ndef orElse[A](self: Option[A]) { that: \x3d\x3e Option[A] }: Option[A] \x3d self match {\n case None() \x3d\x3e that()\n case Some(v) \x3d\x3e Some(v)\n}\n\ndef getOrElse[A](self: Option[A]) { that: \x3d\x3e A }: A \x3d self match {\n case None() \x3d\x3e that()\n case Some(v) \x3d\x3e v\n}\n\ndef map[A, B](self: Option[A]) { f: A \x3d\x3e B }: Option[B] \x3d self match {\n case None() \x3d\x3e None()\n case Some(v) \x3d\x3e Some(f(v))\n}\n\ndef foreach[A](self: Option[A]) { f: A \x3d\x3e Unit }: Unit \x3d self match {\n case None() \x3d\x3e ()\n case Some(v) \x3d\x3e f(v)\n}\n\ndef value[A](self: Option[A]): A / Exception[MissingValue] \x3d self match {\n case None() \x3d\x3e do raise(MissingValue(), "Trying to get the value of an empty option")\n case Some(v) \x3d\x3e v\n}\n\ndef option[A] { p: \x3d\x3e A / Exception[MissingValue] }: Option[A] \x3d\n try { Some(p()) }\n with Exception[MissingValue] { def raise(_, _) \x3d None() }\n\ndef option[A, E](proxy: on[E]) { p: \x3d\x3e A / Exception[E] }: Option[A] \x3d\n try { Some(p()) }\n with Exception[E] { def raise(_, _) \x3d None() }\n\n// Interop with FFI\n// ---------------\n// These functions should only be used by libraries that interface with FFI\ndef undefinedToOption[A](value: A): Option[A] \x3d\n if (value.isUndefined) { None() } else { Some(value) }\n\n\n// Show Instances\n// --------------\n\ndef show[A](o: Option[A]) { showA: A \x3d\x3e String }: String \x3d o match {\n case None() \x3d\x3e "None()"\n case Some(v) \x3d\x3e "Some(" ++ showA(v) ++ ")"\n}\ndef show(o: Option[Int]): String \x3d show(o) { e \x3d\x3e show(e) }\ndef show(o: Option[Double]): String \x3d show(o) { e \x3d\x3e show(e) }\ndef show(o: Option[Bool]): String \x3d show(o) { e \x3d\x3e show(e) }\n\ndef println(o: Option[Int]): Unit \x3d println(show(o))\ndef println(o: Option[Double]): Unit \x3d println(show(o))\ndef println(o: Option[Bool]): Unit \x3d println(show(o))\n'); -Gv("common/string.effekt",'module string\n\nimport effekt\nimport option\nimport list\nimport exception\nimport result\n\n// TODO\n// - [ ] handle unicode codepoints (that can span two indices) correctly\n// - [ ] use string buffers or other buffers to implement repeated concatenation more efficiently (and `join`)\n// - [ ] maybe use native implementations for toInt, repeat, split, indexOf, etc.\n\n/**\n * Strings\n * - JS: Strings are represented as UTF-16 code units where some characters take 2 slots (surrogate pairs)\n * - ML: Strings are sequences of 8-bit characters (https://smlfamily.github.io/Basis/string.html)\n * - Chez: Strings are sequences of unicode characters (?)\n * - LLVM: UTF-8 (characters can take from 1-4 bytes).\n */\n\n\n// Operations\n// ----------\n\ndef substring(str: String, from: Int, to: Int): String \x3d {\n def clamp(lower: Int, x: Int, upper: Int) \x3d max(lower, min(x, upper))\n val lower \x3d clamp(0, from, to)\n val upper \x3d clamp(0, to, str.length)\n str.unsafeSubstring(lower, upper)\n}\n\ndef substring(str: String, from: Int): String \x3d\n str.substring(from, str.length)\n\n\n/**\n * Checks whether str starts with the given prefix at `from`\n */\ndef isSubstringAt(str: String, prefix: String, from: Int): Bool \x3d {\n with default[OutOfBounds, Bool] { false };\n\n val stringLength \x3d str.length\n val prefixLength \x3d prefix.length\n\n def done?(index: Int): Bool \x3d index \x3e\x3d prefixLength\n def matches?(index: Int): Bool \x3d prefix.charAt(index) \x3d\x3d str.charAt(index + from)\n\n def go(index: Int): Bool \x3d\n if (index.done?) true\n else if (index.matches?) go(index + 1) else false\n\n go(0)\n}\n\ndef startsWith(str: String, prefix: String): Bool \x3d\n isSubstringAt(str, prefix, 0)\n\ndef endsWith(str: String, suffix: String): Bool \x3d\n isSubstringAt(str, suffix, str.length - suffix.length)\n\n/**\n * Repeats the given string n-times.\n *\n * TODO use a more efficient way of appending strings like a buffer\n */\ndef repeat(str: String, n: Int): String \x3d {\n def go(n: Int, result: String): String \x3d {\n if (n \x3d\x3d 0) result\n else go(n - 1, result ++ str)\n }\n go(n, "")\n}\n\n// TODO use .split() in JS\ndef split(str: String, sep: String): List[String] \x3d {\n val strLength \x3d str.length\n val sepLength \x3d sep.length\n\n // special case: seperator is empty, just emit individual chars\n def empty(index: Int, components: List[String]): List[String] \x3d\n if (index \x3e\x3d strLength) components.reverse\n else empty(index + 1, Cons(str.substring(index, index + 1), components))\n\n def go(lastIndex: Int, components: List[String]): List[String] \x3d\n indexOf(str, sep, lastIndex) match {\n case None() \x3d\x3e\n Cons(str.substring(lastIndex, strLength), components).reverse\n case Some(index) \x3d\x3e\n go(index + sepLength, Cons(str.substring(lastIndex, index), components))\n }\n\n if (sepLength \x3d\x3d 0) empty(0, Nil())\n else go(0, Nil())\n}\n\ndef join(strings: List[String], sep: String): String \x3d {\n def go(strings: List[String], result: String): String \x3d strings match {\n case Nil() \x3d\x3e result\n case Cons(s, rest) \x3d\x3e go(rest, result ++ sep ++ s)\n }\n strings match {\n case Nil() \x3d\x3e ""\n case Cons(first, rest) \x3d\x3e go(rest, first)\n }\n}\n\nextern pure def trim(str: String): String \x3d\n js "${str}.trim()"\n\n// Parsing\n// -------\ndef toBool(s: String): Bool / Exception[WrongFormat] \x3d s match {\n case "true" \x3d\x3e true\n case "false" \x3d\x3e false\n case _ \x3d\x3e wrongFormat("Not a boolean value: \'" ++ s ++ "\'")\n}\n\n// TODO optimize (right now this will be horribly slow (compared to the native JS version)\ndef toInt(str: String): Int / Exception[WrongFormat] \x3d {\n\n val zero \x3d \'0\'.toInt\n\n def go(index: Int, acc: Int): Int \x3d {\n result[Char, OutOfBounds] { str.charAt(index) } match {\n case Success(c) and c \x3e\x3d \'0\' and c \x3c\x3d \'9\' \x3d\x3e\n go(index + 1, 10 * acc + (c.toInt - zero))\n case Success(c) \x3d\x3e wrongFormat("Not a valid number: \'" ++ str ++ "\'")\n // wrong index means we are done parsing\n case Error(_, _) \x3d\x3e acc\n }\n }\n\n with default[OutOfBounds, Int] { wrongFormat("Empty string is not a valid number") };\n\n str.charAt(0) match {\n case \'-\' \x3d\x3e 0 - go(1, 0)\n case _ \x3d\x3e go(0, 0)\n }\n}\n\n// TODO optimize (right now this will be horribly slow (compared to the native JS version)\ndef toInt(str: String, base: Int): Int / Exception[WrongFormat] \x3d {\n\n if( base \x3e 36 || base \x3c 1 ) {\n wrongFormat("Invalid base: " ++ base.show)\n }\n\n val zero \x3d \'0\'.toInt\n val l_a \x3d \'a\'.toInt\n val u_a \x3d \'A\'.toInt\n\n def parseDigit(c: Char): Option[Int] \x3d {\n if( c \x3e\x3d \'0\' and c \x3c\x3d \'9\' and c.toInt - zero \x3c base ) {\n Some(c.toInt - zero)\n } else if( c \x3e\x3d \'a\' and c \x3c\x3d \'z\' and c.toInt - l_a \x3c base - 10 ) {\n Some(c.toInt - l_a + 10)\n } else if( c \x3e\x3d \'A\' and c \x3c\x3d \'Z\' and c.toInt - u_a \x3c base - 10) {\n Some(c.toInt - u_a + 10)\n } else {\n None()\n }\n }\n\n def go(index: Int, acc: Int): Int \x3d {\n result[Char, OutOfBounds] { str.charAt(index) } match {\n case Success(c) and parseDigit(c) is Some(d) \x3d\x3e\n go(index + 1, base * acc + d)\n case Success(c) \x3d\x3e wrongFormat("Not a valid number: \'" ++ str ++ "\'")\n // wrong index means we are done parsing\n case Error(_, _) \x3d\x3e acc\n }\n }\n\n with default[OutOfBounds, Int] { wrongFormat("Empty string is not a valid number") };\n\n str.charAt(0) match {\n case \'-\' \x3d\x3e 0 - go(1, 0)\n case _ \x3d\x3e go(0, 0)\n }\n}\n\n// Native versions of toInt (unused right now)\n// ML: also accepts sml style `~2` for unary minus along with `+2` and `-2`\nextern pure def unsafeToInt(str: String): Int \x3d\n js "(Number.isNaN(parseInt(${str})) ? undefined : parseInt(${str}))"\n chez "(string-\x3enumber ${str})"\n ml "Int.fromString ${str}"\n\n\n/**\n * Returns the index of the first occurrence of `sub` in `str`\n */\ndef indexOf(str: String, sub: String): Option[Int] \x3d\n indexOf(str, sub, 0)\n\ndef indexOf(str: String, sub: String, from: Int): Option[Int] \x3d {\n val len \x3d str.length\n def go(index: Int): Option[Int] \x3d\n if (index \x3e\x3d len) None()\n else if (str.isSubstringAt(sub, index)) Some(index)\n else go(index + 1)\n\n go(from)\n}\n\n/**\n * Returns the index of the last occurence of `sub` in `str`\n */\ndef lastIndexOf(str: String, sub: String): Option[Int] \x3d\n lastIndexOf(str, sub, str.length)\n\ndef lastIndexOf(str: String, sub: String, from: Int): Option[Int] \x3d {\n def go(index: Int): Option[Int] \x3d\n if (index \x3c 0) None()\n else if (str.isSubstringAt(sub, index)) Some(index)\n else go(index - 1)\n\n go(from)\n}\n\n// TODO more efficient (native) implementations could be integrated as follows\n\n// extern pure def indexOf(str: String, sub: String): Option[Int] \x3d\n// //js { nativeIndexOf(str, sub) }\n// default { indexOf(str, sub, 0) }\n\n// def nativeIndexOf(str: String, sub: String): Option[Int] \x3d {\n// val index \x3d str.unsafeIndexOf(sub)\n// if (index \x3c 0) { None() } else { Some(index) }\n// }\n\n// extern pure def unsafeIndexOf(str: String, sub: String): Int \x3d\n// js "${str}.indexOf(${sub})"\n\ninterface Stream {\n def emit(string: Char): Unit\n}\n\ndef string[T] { prog: \x3d\x3e T / Stream }: (T, String) \x3d \x3c\x3e\n\n// TODO implement after concurrent IO (we need to stub `process.stdout` in JS for browsers).\ndef printing[T] { prog: \x3d\x3e T / Stream }: T \x3d \x3c\x3e\n\n\n// ANSI escape codes\nnamespace ANSI {\n val BLACK \x3d "\\u001b[30m"\n val RED \x3d "\\u001b[31m"\n val GREEN \x3d "\\u001b[32m"\n val YELLOW \x3d "\\u001b[33m"\n val BLUE \x3d "\\u001b[34m"\n val MAGENTA \x3d "\\u001b[35m"\n val CYAN \x3d "\\u001b[36m"\n val WHITE \x3d "\\u001b[37m"\n\n val BG_BLACK \x3d "\\u001b[40m"\n val BG_RED \x3d "\\u001b[41m"\n val BG_GREEN \x3d "\\u001b[42m"\n val BG_YELLOW \x3d "\\u001b[43m"\n val BG_BLUE \x3d "\\u001b[44m"\n val BG_MAGENTA \x3d "\\u001b[45m"\n val BG_CYAN \x3d "\\u001b[46m"\n val BG_WHITE \x3d "\\u001b[47m"\n\n val RESET \x3d "\\u001b[0m"\n}\n\n\n// Characters\n// ----------\n//\n// JS: Int (Unicode codepoints)\n// CS: ?\n// ML: 8-bit https://smlfamily.github.io/Basis/char.html\n// LLVM: i64 representing utf-8 (varying length 1-4 bytes)\n\nextern pure def toString(ch: Char): String \x3d\n js "String.fromCodePoint(${ch})"\n chez "(string (integer-\x3echar ${ch}))"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d call %Pos @c_buffer_show_Char(%Int ${ch})\n ret %Pos %z\n !!!MULTILINEMARKER!!!\n\n// Since we currently represent Char by integers in all backends, we could reuse comparison\nextern pure def toInt(ch: Char): Int \x3d\n js "${ch}"\n chez "${ch}"\n ml "${ch}"\n llvm "ret %Int ${ch}"\n\nextern pure def toChar(codepoint: Int): Char \x3d\n js "${codepoint}"\n chez "${codepoint}"\n ml "${codepoint}"\n llvm "ret %Int ${codepoint}"\n\n\nextern pure def infixLt(x: Char, y: Char): Bool \x3d\n js "(${x} \x3c ${y})"\n chez "(\x3c ${x} ${y})"\n ml "(${x}: int) \x3c ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d icmp slt %Int ${x}, ${y}\n %fat_z \x3d zext i1 %z to i64\n %adt_boolean \x3d insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixLte(x: Char, y: Char): Bool \x3d\n js "(${x} \x3c\x3d ${y})"\n chez "(\x3c\x3d ${x} ${y})"\n ml "(${x}: int) \x3c\x3d ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d icmp sle %Int ${x}, ${y}\n %fat_z \x3d zext i1 %z to i64\n %adt_boolean \x3d insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixGt(x: Char, y: Char): Bool \x3d\n js "(${x} \x3e ${y})"\n chez "(\x3e ${x} ${y})"\n ml "(${x}: int) \x3e ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d icmp sgt %Int ${x}, ${y}\n %fat_z \x3d zext i1 %z to i64\n %adt_boolean \x3d insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\nextern pure def infixGte(x: Char, y: Char): Bool \x3d\n js "(${x} \x3e\x3d ${y})"\n chez "(\x3e\x3d ${x} ${y})"\n ml "(${x}: int) \x3e\x3d ${y}"\n llvm !!!MULTILINEMARKER!!!\n %z \x3d icmp sge %Int ${x}, ${y}\n %fat_z \x3d zext i1 %z to i64\n %adt_boolean \x3d insertvalue %Pos zeroinitializer, i64 %fat_z, 0\n ret %Pos %adt_boolean\n !!!MULTILINEMARKER!!!\n\n// TODO iterator over codepoints (maybe use the JS primitive feature???)\n\nextern type StringIterator\n\n\n/**\n * Determines the number of bytes needed by a codepoint\n *\n * Also see: https://en.wikipedia.org/wiki/UTF-8\n */\ndef utf8ByteCount(codepoint: Char): Int \x3d codepoint match {\n case c and c \x3e\x3d \\u0000 and c \x3c\x3d \\u007F \x3d\x3e 1\n case c and c \x3e\x3d \\u0080 and c \x3c\x3d \\u07FF \x3d\x3e 2\n case c and c \x3e\x3d \\u0800 and c \x3c\x3d \\uFFFF \x3d\x3e 3\n case c and c \x3e\x3d \\u10000 and c \x3c\x3d \\u10FFFF \x3d\x3e 4\n case c \x3d\x3e panic("Not a valid code point")\n}\n\ndef utf16UnitCount(codepoint: Char): Int \x3d codepoint match {\n case c and c \x3e\x3d \\u0000 and c \x3c\x3d \\uFFFF \x3d\x3e 1\n case c and c \x3e\x3d \\u10000 and c \x3c\x3d \\u10FFFF \x3d\x3e 4\n case c \x3d\x3e panic("Not a valid code point")\n}\n\n// TODO this is copied from the LLVM-backend stdlib. Do we need this?\n// def showQuoted(s: String): String \x3d\n// "\\x22" ++ s.map { c \x3d\x3e\n// if(c \x3d\x3d "\\x22") {\n// "\\\\\\x22"\n// } else if (c \x3d\x3d "\\\\") {\n// "\\\\\\\\"\n// } else c\n// } ++ "\\x22"\n\nextern pure def charWidth(c: Char): Int \x3d\n // JavaScript strings are UTF-16 where every unicode character after 0xffff takes two units\n js "(${c} \x3e 0xffff) ? 2 : 1"\n\ndef charAt(str: String, index: Int): Char / Exception[OutOfBounds] \x3d\n if (index \x3c 0 || index \x3e\x3d length(str))\n do raise(OutOfBounds(), "Index out of bounds: " ++ show(index) ++ " in string: \'" ++ str ++ "\'")\n else\n unsafeCharAt(str, index)\n\nextern pure def unsafeCharAt(str: String, n: Int): Char \x3d\n js "${str}.codePointAt(${n})"\n chez "(char-\x3einteger (string-ref ${str} ${n}))"\n ml "(Char.ord (String.sub (${str}, ${n})))"\n llvm !!!MULTILINEMARKER!!!\n %x \x3d call %Int @c_buffer_character_at(%Pos ${str}, i64 ${n})\n ret %Int %x\n !!!MULTILINEMARKER!!!\n'); -Gv("common/seq.effekt",'module seq\n\n/**\n * This file implements the [[Seq]] type as a general purpose functional sequence.\n *\n * Implemented as a 2-3 finger tree, it supports\n * - prepend and append in amortized O(1),\n * - concat(m, n) in O(log(min(m, n)))\n * - first and last in amortized O(1)\n * - size in amortized O(1)\n *\n * More information on finger trees:\n * https://www.staff.city.ac.uk/~ross/papers/FingerTree.pdf\n */\n\n/**\n * Sequences of elements\n *\n * They are represented as 2-3 finger trees.\n */\ntype Seq[A] {\n Empty()\n Single(value: A)\n Deep(size: Int, prefix: Digit[A], middle: Tree[A], suffix: Digit[A])\n}\n\n/**\n * Result of splitting a sequence at the front or back.\n */\ntype View[A] {\n IsEmpty()\n View(element: A, remainder: Seq[A])\n}\n\n/**\n * Exception[NoSuchElement] is raised when accessing non-existing elements\n * or splitting empty collections.\n */\nrecord NoSuchElement()\n\n\nrecord IndexOutOfBounds()\n\n\n\n// Implementation\n// \x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\x3d\n// Internal implementation note:\n// we use the following abbreviations:\n// - s: suffix\n// - p: prefix\n// - v: value\n// - n: node\n// - m: middle (spine)\n// - a,b,c,d: elements of a digit in this order\n//\n// we do not abbreviate:\n// - size\n\n\n// Internal Types\n// --------------\n\n/**\n * Internal grouping of 1-4 elements\n *\n * It is called digit since Okasaki (1998) calls finger trees "numerical operations".\n */\ntype Digit[A] {\n One(value: A)\n Two(first: A, second: A)\n Three(first: A, second: A, third: A)\n Four(first: A, second: A, third: A, fourth: A)\n}\n\n/**\n * Internal representation of a 2-3 tree\n */\ntype Node[A] {\n // These are necessary to avoid polymorphic recursion\n Leaf2(first: A, second: A)\n Leaf3(first: A, second: A, third: A)\n Node2(size: Int, first: Node[A], second: Node[A])\n Node3(size: Int, first: Node[A], second: Node[A], third: Node[A])\n}\n\n/**\n * Internal duplicate of Seq\n *\n * splitting into two type parameters is necessary since our MLton backend does\n * not support mutually recursive data type declarations.\n */\ntype Finger[A, N] {\n NoFinger()\n SingleFinger(value: Node[A])\n DeepFinger(size: Int, prefix: N, middle: Finger[A, N], suffix: N)\n}\n\n/**\n * Internal\n */\ntype Tree[A] \x3d Finger[A, Digit[Node[A]]]\n\n/**\n * Internal\n */\ntype TreeView[A] {\n TreeIsEmpty()\n TreeView(element: Node[A], rest: Tree[A])\n}\n\n\n\n// Measure\n// -------\n\ndef size[A](node: Digit[A]): Int \x3d node match {\n case One(_) \x3d\x3e 1\n case Two(_, _) \x3d\x3e 2\n case Three(_, _, _) \x3d\x3e 3\n case Four(_, _, _, _) \x3d\x3e 4\n}\n\ndef size[A](node: Node[A]): Int \x3d node match {\n case Leaf2(_, _) \x3d\x3e 2\n case Leaf3(_, _, _) \x3d\x3e 3\n case Node2(size, _, _) \x3d\x3e size\n case Node3(size, _, _, _) \x3d\x3e size\n}\n\ndef sizeDeep[A](node: Digit[Node[A]]): Int \x3d node match {\n case One(a) \x3d\x3e a.size\n case Two(a, b) \x3d\x3e a.size + b.size\n case Three(a, b, c) \x3d\x3e a.size + b.size + c.size\n case Four(a, b, c, d) \x3d\x3e a.size + b.size + c.size + d.size\n}\n\ndef size[A](tree: Tree[A]): Int \x3d tree match {\n case NoFinger() \x3d\x3e 0\n case SingleFinger(value) \x3d\x3e value.size\n case DeepFinger(size, _, _, _) \x3d\x3e size\n}\n\n/**\n * The size of the given sequence\n */\ndef size[A](seq: Seq[A]): Int \x3d seq match {\n case Empty() \x3d\x3e 0\n case Single(value) \x3d\x3e 1\n case Deep(size, _, _, _) \x3d\x3e size\n}\n\n\n// Internal smart constructors\n// ---------------------------\n\ndef deepFinger[A](prefix: Digit[Node[A]], middle: Tree[A], suffix: Digit[Node[A]]): Tree[A] \x3d\n DeepFinger(prefix.sizeDeep + middle.size + suffix.sizeDeep, prefix, middle, suffix)\n\ndef deep[A](prefix: Digit[A], middle: Tree[A], suffix: Digit[A]): Seq[A] \x3d\n Deep(prefix.size + middle.size + suffix.size, prefix, middle, suffix)\n\ndef node2[A](first: Node[A], second: Node[A]): Node[A] \x3d\n Node2(first.size + second.size, first, second)\n\ndef node3[A](first: Node[A], second: Node[A], third: Node[A]): Node[A] \x3d\n Node3(first.size + second.size + third.size, first, second, third)\n\n\n// Adding an element to the left\n// -----------------------------\n\ndef consFinger[A](head: Node[A], tail: Tree[A]): Tree[A] \x3d tail match {\n case NoFinger() \x3d\x3e SingleFinger(head)\n case SingleFinger(b) \x3d\x3e deepFinger(One(head), NoFinger(), One(b))\n case DeepFinger(_, One(b), m, s) \x3d\x3e deepFinger(Two(head, b), m, s)\n case DeepFinger(_, Two(b, c), m, s) \x3d\x3e deepFinger(Three(head, b, c), m, s)\n case DeepFinger(_, Three(b, c, d), m, s) \x3d\x3e deepFinger(Four(head, b, c, d), m, s)\n case DeepFinger(_, Four(b, c, d, e), m, s) \x3d\x3e\n deepFinger(Two(head, b), consFinger(node3(c, d, e), m), s)\n}\n\ndef cons[A](head: A, tail: Seq[A]): Seq[A] \x3d tail match {\n case Empty() \x3d\x3e Single(head)\n case Single(b) \x3d\x3e Deep(2, One(head), NoFinger(), One(b))\n case Deep(size, One(b), m, s) \x3d\x3e Deep(size + 1, Two(head, b), m, s)\n case Deep(size, Two(b, c), m, s) \x3d\x3e Deep(size + 1, Three(head, b, c), m, s)\n case Deep(size, Three(b, c, d), m, s) \x3d\x3e Deep(size + 1, Four(head, b, c, d), m, s)\n case Deep(size, Four(b, c, d, e), m, s) \x3d\x3e\n Deep(size + 1, Two(head, b), consFinger(Leaf3(c, d, e), m), s)\n}\n\n\n// Adding an element to the right\n// ------------------------------\n\ndef consFingerRight[A](init: Tree[A], last: Node[A]): Tree[A] \x3d init match {\n case NoFinger() \x3d\x3e SingleFinger(last)\n case SingleFinger(b) \x3d\x3e deepFinger(One(b), NoFinger(), One(last))\n case DeepFinger(_, p, m, One(b)) \x3d\x3e deepFinger(p, m, Two(b, last))\n case DeepFinger(_, p, m, Two(b, c)) \x3d\x3e deepFinger(p, m, Three(b, c, last))\n case DeepFinger(_, p, m, Three(b, c, d)) \x3d\x3e deepFinger(p, m, Four(b, c, d, last))\n case DeepFinger(_, p, m, Four(b, c, d, e)) \x3d\x3e\n deepFinger(p, consFingerRight(m, node3(b, c, d)), Two(e, last))\n}\n\ndef consRight[A](init: Seq[A], last: A): Seq[A] \x3d init match {\n case Empty() \x3d\x3e Single(last)\n case Single(b) \x3d\x3e Deep(2, One(b), NoFinger(), One(last))\n case Deep(size, p, m, One(b)) \x3d\x3e Deep(size + 1, p, m, Two(b, last))\n case Deep(size, p, m, Two(b, c)) \x3d\x3e Deep(size + 1, p, m, Three(b, c, last))\n case Deep(size, p, m, Three(b, c, d)) \x3d\x3e Deep(size + 1, p, m, Four(b, c, d, last))\n case Deep(size, p, m, Four(b, c, d, e)) \x3d\x3e\n Deep(size + 1, p, consFingerRight(m, Leaf3(b, c, d)), Two(e, last))\n}\n\n\n// Splitting the sequence on the left\n// ----------------------------------\n\ndef unconsFinger[A](seq: Tree[A]): TreeView[A] \x3d seq match {\n case NoFinger() \x3d\x3e TreeIsEmpty()\n case SingleFinger(v) \x3d\x3e TreeView(v, NoFinger())\n // TODO this is a tail-call-modulo-context\n case DeepFinger(size, One(a), m, s) \x3d\x3e TreeView(a, unconsFinger(m) match {\n case TreeIsEmpty() \x3d\x3e s.toTree\n case TreeView(b, m2) \x3d\x3e DeepFinger(size - a.size, b.toDigitNode, m2, s)\n })\n case DeepFinger(size, Two(a, b), m, s) \x3d\x3e TreeView(a, DeepFinger(size - a.size, One(b), m, s))\n case DeepFinger(size, Three(a, b, c), m, s) \x3d\x3e TreeView(a, DeepFinger(size - a.size, Two(b, c), m, s))\n case DeepFinger(size, Four(a, b, c, d), m, s) \x3d\x3e TreeView(a, DeepFinger(size - a.size, Three(b, c, d), m, s))\n}\n\n// this could be called "uncons", "first", "front", "head", "popFront", "start", "popStart"\ndef uncons[A](seq: Seq[A]): View[A] \x3d seq match {\n case Empty() \x3d\x3e IsEmpty()\n case Single(v) \x3d\x3e View(v, Empty())\n case Deep(size, One(a), m, s) \x3d\x3e View(a, unconsFinger(m) match {\n case TreeIsEmpty() \x3d\x3e s.toSeq\n case TreeView(b, m2) \x3d\x3e Deep(size - 1, b.toDigit, m2, s)\n })\n case Deep(size, Two(a, b), m, s) \x3d\x3e View(a, Deep(size - 1, One(b), m, s))\n case Deep(size, Three(a, b, c), m, s) \x3d\x3e View(a, Deep(size - 1, Two(b, c), m, s))\n case Deep(size, Four(a, b, c, d), m, s) \x3d\x3e View(a, Deep(size - 1, Three(b, c, d), m, s))\n}\n\ndef head[A](seq: Seq[A]): A / Exception[NoSuchElement] \x3d seq.uncons match {\n case IsEmpty() \x3d\x3e raise(NoSuchElement(), "Calling `head` on empty sequence.")\n case View(element, _) \x3d\x3e element\n}\n\ndef tail[A](seq: Seq[A]): Seq[A] / Exception[NoSuchElement] \x3d seq.uncons match {\n case IsEmpty() \x3d\x3e raise(NoSuchElement(), "Calling `tail` on empty sequence.")\n case View(element, rest) \x3d\x3e rest\n}\n\n\n// Splitting the sequence on the right\n// -----------------------------------\n\ndef unconsRightFinger[A](seq: Tree[A]): TreeView[A] \x3d seq match {\n case NoFinger() \x3d\x3e TreeIsEmpty()\n case SingleFinger(v) \x3d\x3e TreeView(v, NoFinger())\n // TODO this is a tail-call-modulo-context\n case DeepFinger(size, p, m, One(a)) \x3d\x3e TreeView(a, unconsRightFinger(m) match {\n case TreeIsEmpty() \x3d\x3e p.toTree\n case TreeView(b, m2) \x3d\x3e DeepFinger(size - a.size, p, m2, b.toDigitNode)\n })\n case DeepFinger(size, p, m, Two(a, b)) \x3d\x3e TreeView(b, DeepFinger(size - b.size, p, m, One(a)))\n case DeepFinger(size, p, m, Three(a, b, c)) \x3d\x3e TreeView(c, DeepFinger(size - c.size, p, m, Two(a, b)))\n case DeepFinger(size, p, m, Four(a, b, c, d)) \x3d\x3e TreeView(d, DeepFinger(size - d.size, p, m, Three(a, b, c)))\n}\n\n// this could be called "uncons", "first", "front", "head", "popFront", "start", "popStart"\ndef unconsRight[A](seq: Seq[A]): View[A] \x3d seq match {\n case Empty() \x3d\x3e IsEmpty()\n case Single(v) \x3d\x3e View(v, Empty())\n case Deep(size, p, m, One(a)) \x3d\x3e View(a, unconsFinger(m) match {\n case TreeIsEmpty() \x3d\x3e p.toSeq\n case TreeView(b, m2) \x3d\x3e Deep(size - 1, p, m2, b.toDigit)\n })\n case Deep(size, p, m, Two(a, b)) \x3d\x3e View(b, Deep(size - 1, p, m, One(a)))\n case Deep(size, p, m, Three(a, b, c)) \x3d\x3e View(c, Deep(size - 1, p, m, Two(a, b)))\n case Deep(size, p, m, Four(a, b, c, d)) \x3d\x3e View(d, Deep(size - 1, p, m, Three(a, b, c)))\n}\n\n\n// Concatenating Sequences\n// -----------------------\n\ndef concatTree[A](first: Tree[A], middle: List[Node[A]], second: Tree[A]): Tree[A] \x3d {\n\n // can we get rid of the list?\n\n def prepend(nodes: List[Node[A]], tree: Tree[A]): Tree[A] \x3d nodes match {\n case Nil() \x3d\x3e tree\n case Cons(head, tail) \x3d\x3e consFinger(head, prepend(tail, tree))\n }\n\n def append(tree: Tree[A], nodes: List[Node[A]]): Tree[A] \x3d nodes match {\n case Nil() \x3d\x3e tree\n case Cons(head, tail) \x3d\x3e append(consFingerRight(tree, head), tail)\n }\n\n def consFinger(digit: Digit[Node[A]], tree: Tree[A]): Tree[A] \x3d digit match {\n case One(a) \x3d\x3e consFinger(a, tree)\n case Two(a, b) \x3d\x3e consFinger(a, consFinger(b, tree))\n case Three(a, b, c) \x3d\x3e consFinger(a, consFinger(b, consFinger(c, tree)))\n case Four(a, b, c, d) \x3d\x3e consFinger(a, consFinger(b, consFinger(c, consFinger(d, tree))))\n }\n\n def toList(digit: Digit[Node[A]]): List[Node[A]] \x3d digit match {\n case One(a) \x3d\x3e Cons(a, Nil())\n case Two(a, b) \x3d\x3e Cons(a, Cons(b, Nil()))\n case Three(a, b, c) \x3d\x3e Cons(a, Cons(b, Cons(c, Nil())))\n case Four(a, b, c, d) \x3d\x3e Cons(a, Cons(b, Cons(c, Cons(d, Nil()))))\n }\n\n def rebalance(nodes: List[Node[A]]): List[Node[A]] \x3d nodes match {\n case Cons(a, Cons(b, Nil())) \x3d\x3e Cons(node2(a, b), Nil())\n case Cons(a, Cons(b, Cons(c, Nil()))) \x3d\x3e Cons(node3(a, b, c), Nil())\n case Cons(a, Cons(b, Cons(c, Cons(d, Nil())))) \x3d\x3e Cons(node2(a, b), Cons(node2(c, d), Nil()))\n case Cons(a, Cons(b, Cons(c, rest))) \x3d\x3e Cons(node3(a, b, c), rebalance(rest))\n case _ \x3d\x3e \x3c\x3e\n }\n\n def go(prefix: Tree[A], middle: List[Node[A]], suffix: Tree[A]): Tree[A] \x3d\n (prefix, suffix) match {\n case (NoFinger(), s) \x3d\x3e prepend(middle, s)\n case (p, NoFinger()) \x3d\x3e append(p, middle)\n case (SingleFinger(v), s) \x3d\x3e consFinger(v, prepend(middle, s))\n case (p, SingleFinger(v)) \x3d\x3e consFingerRight(append(p, middle), v)\n case (DeepFinger(size1, p1, m1, s1), DeepFinger(size2, p2, m2, s2)) \x3d\x3e\n val list \x3d s1.toList.append(middle).append(p2.toList)\n DeepFinger(size1 + size2, p1, go(m1, rebalance(list), m2), s2)\n }\n\n go(first, middle, second)\n}\n\ndef concat[A](first: Seq[A], second: Seq[A]): Seq[A] \x3d {\n def rebalance(t: List[A]): List[Node[A]] \x3d t match {\n case Cons(a, Cons(b, Nil())) \x3d\x3e Cons(Leaf2(a, b), Nil())\n case Cons(a, Cons(b, Cons(c, Nil()))) \x3d\x3e Cons(Leaf3(a, b, c), Nil())\n case Cons(a, Cons(b, Cons(c, Cons(d, Nil())))) \x3d\x3e Cons(Leaf2(a, b), Cons(Leaf2(c, d), Nil()))\n case Cons(a, Cons(b, Cons(c, rest))) \x3d\x3e Cons(Leaf3(a, b, c), rebalance(rest))\n case _ \x3d\x3e \x3c\x3e\n }\n\n (first, second) match {\n case (Empty(), other) \x3d\x3e other\n case (other, Empty()) \x3d\x3e other\n case (Single(v), other) \x3d\x3e cons(v, other)\n case (other, Single(v)) \x3d\x3e consRight(other, v)\n case (Deep(size1, p1, m1, s1), Deep(size2, p2, m2, s2)) \x3d\x3e\n Deep(size1 + size2, p1, concatTree(m1, rebalance(s1.toList.append(p2.toList)), m2), s2)\n }\n}\n\n\n// Predicates\n// ----------\n\ndef isEmpty[A](seq: Seq[A]): Bool \x3d seq match {\n case Empty() \x3d\x3e true\n case _ \x3d\x3e false\n}\n\ndef nonEmpty[A](seq: Seq[A]): Bool \x3d seq match {\n case Empty() \x3d\x3e false\n case _ \x3d\x3e true\n}\n\ndef reverse[A](seq: Seq[A]): Seq[A] \x3d {\n\n // invariant for all internal functions: element is in the sequence\n\n // this is tail-recursive-modulo-context\n def go(node: Node[A]): Node[A] \x3d node match {\n case Leaf2(a, b) \x3d\x3e Leaf2(b, a)\n case Leaf3(a, b, c) \x3d\x3e Leaf3(c, b, a)\n case Node2(size, a, b) \x3d\x3e Node2(size, go(b), go(a))\n case Node3(size, a, b, c) \x3d\x3e Node3(size, go(c), go(b), go(a))\n }\n def go(digit: Digit[A]): Digit[A] \x3d digit match {\n case One(a) \x3d\x3e One(a)\n case Two(a, b) \x3d\x3e Two(b, a)\n case Three(a, b, c) \x3d\x3e Three(c, b, a)\n case Four(a, b, c, d) \x3d\x3e Four(d, c, b, a)\n }\n def go(digits: Digit[Node[A]]): Digit[Node[A]] \x3d digits match {\n case One(a) \x3d\x3e One(go(a))\n case Two(a, b) \x3d\x3e Two(go(b), go(a))\n case Three(a, b, c) \x3d\x3e Three(go(c), go(b), go(a))\n case Four(a, b, c, d) \x3d\x3e Four(go(d), go(c), go(b), go(a))\n }\n def go(tree: Tree[A]): Tree[A] \x3d tree match {\n case NoFinger() \x3d\x3e NoFinger()\n case SingleFinger(value) \x3d\x3e SingleFinger(go(value))\n case DeepFinger(size, p, m, s) \x3d\x3e DeepFinger(size, go(s), go(m), go(p))\n }\n\n seq match {\n case Empty() \x3d\x3e Empty()\n case Single(value) \x3d\x3e Single(value)\n case Deep(size, p, m, s) \x3d\x3e Deep(size, go(s), go(m), go(p))\n }\n}\n\n\n/**\n * Random access\n */\ndef index[A](seq: Seq[A], index: Int): A / Exception[NoSuchElement] \x3d {\n\n // invariant for all internal functions: element is in the sequence\n\n def go(node: Node[A], index: Int): A \x3d node match {\n case Leaf2(a, b) \x3d\x3e if (index \x3d\x3d 0) a else b\n case Leaf3(a, b, c) \x3d\x3e if (index \x3d\x3d 0) a else if (index \x3d\x3d 1) b else c\n case Node2(_, a, b) \x3d\x3e\n val asize \x3d a.size\n if (index \x3c asize) go(a, index) else go(b, index - asize)\n case Node3(_, a, b, c) \x3d\x3e\n val asize \x3d a.size\n if (index \x3c asize) go(a, index) else {\n val bsize \x3d asize + b.size\n if (index \x3c bsize) go(b, index - asize) else go(c, index - bsize)\n }\n }\n def go(digit: Digit[A], index: Int): A \x3d digit match {\n case One(a) \x3d\x3e a\n case Two(a, b) \x3d\x3e if (index \x3d\x3d 0) a else b\n case Three(a, b, c) \x3d\x3e if (index \x3d\x3d 0) a else if (index \x3d\x3d 1) b else c\n case Four(a, b, c, d) \x3d\x3e if (index \x3d\x3d 0) a else if (index \x3d\x3d 1) b else if (index \x3d\x3d 2) c else d\n }\n def go(digits: Digit[Node[A]], index: Int): A \x3d digits match {\n case One(a) \x3d\x3e go(a, index)\n case Two(a, b) \x3d\x3e\n val asize \x3d a.size\n if (index \x3c asize) go(a, index) else go(b, index - asize)\n case Three(a, b, c) \x3d\x3e\n val asize \x3d a.size\n if (index \x3c asize) go(a, index) else {\n val bsize \x3d asize + b.size\n if (index \x3c bsize) go(b, index - asize) else {\n go(c, index - bsize)\n }\n }\n case Four(a, b, c, d) \x3d\x3e\n val asize \x3d a.size\n if (index \x3c asize) go(a, index) else {\n val bsize \x3d asize + b.size\n if (index \x3c bsize) go(b, index - asize) else {\n val csize \x3d bsize + c.size\n if (index \x3c csize) go(c, index - bsize) else {\n go(d, index - csize)\n }\n }\n }\n }\n def go(tree: Tree[A], index: Int): A \x3d tree match {\n case NoFinger() \x3d\x3e \x3c{ "Cannot happen!" }\x3e\n case SingleFinger(value) \x3d\x3e go(value, index)\n case DeepFinger(_, p, m, s) \x3d\x3e\n val psize \x3d p.sizeDeep\n if (index \x3c psize) { go(p, index) } else {\n val msize \x3d psize + m.size\n if (index \x3c msize) { go(m, index - psize) }\n else { go(s, index - msize) }\n }\n }\n\n if (index \x3e\x3d seq.size) raise(NoSuchElement(), "...")\n else seq match {\n case Empty() \x3d\x3e \x3c{ "Cannot happen!" }\x3e\n case Single(v) \x3d\x3e v // has to be the right one due to the check above\n case Deep(_, p, m, s) \x3d\x3e\n val psize \x3d p.size\n if (index \x3c psize) { go(p, index) } else {\n val msize \x3d psize + m.size\n if (index \x3c msize) { go(m, index - psize) }\n else { go(s, index - msize) }\n }\n }\n}\n\n/**\n * Random access\n */\ndef update[A](seq: Seq[A], index: Int, value: A): Seq[A] / Exception[NoSuchElement] \x3d {\n\n // invariant for all internal functions: element is in the sequence\n\n // this is tail-recursive-modulo-context\n def go(node: Node[A], index: Int): Node[A] \x3d node match {\n case Leaf2(a, b) \x3d\x3e if (index \x3d\x3d 0) Leaf2(value, b) else Leaf2(a, value)\n case Leaf3(a, b, c) \x3d\x3e if (index \x3d\x3d 0) Leaf3(value, b, c) else if (index \x3d\x3d 1) Leaf3(a, value, c) else Leaf3(a, b, value)\n case Node2(size, a, b) \x3d\x3e\n val asize \x3d a.size\n if (index \x3c asize) Node2(size, go(a, index), b) else Node2(size, a, go(b, index - asize))\n case Node3(size, a, b, c) \x3d\x3e\n val asize \x3d a.size\n if (index \x3c asize) Node3(size, go(a, index), b, c) else {\n val bsize \x3d asize + b.size\n if (index \x3c bsize) Node3(size, a, go(b, index - asize), c) else Node3(size, a, b, go(c, index - bsize))\n }\n }\n def go(digit: Digit[A], index: Int): Digit[A] \x3d digit match {\n case One(a) \x3d\x3e One(value)\n case Two(a, b) \x3d\x3e if (index \x3d\x3d 0) Two(value, b) else Two(a, value)\n case Three(a, b, c) \x3d\x3e if (index \x3d\x3d 0) Three(value, b, c) else if (index \x3d\x3d 1) Three(a, value, c) else Three(a, b, value)\n case Four(a, b, c, d) \x3d\x3e if (index \x3d\x3d 0) Four(value, b, c, d) else if (index \x3d\x3d 1) Four(a, value, c, d) else if (index \x3d\x3d 2) Four(a, b, value, d) else Four(a, b, c, value)\n }\n def go(digits: Digit[Node[A]], index: Int): Digit[Node[A]] \x3d digits match {\n case One(a) \x3d\x3e One(go(a, index))\n case Two(a, b) \x3d\x3e\n val asize \x3d a.size\n if (index \x3c asize) Two(go(a, index), b) else Two(a, go(b, index - asize))\n case Three(a, b, c) \x3d\x3e\n val asize \x3d a.size\n if (index \x3c asize) Three(go(a, index), b, c) else {\n val bsize \x3d asize + b.size\n if (index \x3c bsize) Three(a, go(b, index - asize), c) else {\n Three(a, b, go(c, index - bsize))\n }\n }\n case Four(a, b, c, d) \x3d\x3e\n val asize \x3d a.size\n if (index \x3c asize) Four(go(a, index), b, c, d) else {\n val bsize \x3d asize + b.size\n if (index \x3c bsize) Four(a, go(b, index - asize), c, d) else {\n val csize \x3d bsize + c.size\n if (index \x3c csize) Four(a, b, go(c, index - bsize), d) else {\n Four(a, b, c, go(d, index - csize))\n }\n }\n }\n }\n def go(tree: Tree[A], index: Int): Tree[A] \x3d tree match {\n case NoFinger() \x3d\x3e \x3c{ "Cannot happen!" }\x3e\n case SingleFinger(value) \x3d\x3e SingleFinger(go(value, index))\n case DeepFinger(size, p, m, s) \x3d\x3e\n val psize \x3d p.sizeDeep\n if (index \x3c psize) { DeepFinger(size, go(p, index), m, s) } else {\n val msize \x3d psize + m.size\n if (index \x3c msize) { DeepFinger(size, p, go(m, index - psize), s) }\n else { DeepFinger(size, p, m, go(s, index - msize)) }\n }\n }\n\n if (index \x3e\x3d seq.size) raise(NoSuchElement(), "...")\n else seq match {\n case Empty() \x3d\x3e \x3c{ "Cannot happen!" }\x3e\n case Single(_) \x3d\x3e Single(value) // has to be the right one due to the check above\n case Deep(size, p, m, s) \x3d\x3e\n val psize \x3d p.size\n if (index \x3c psize) { Deep(size, go(p, index), m, s) } else {\n val msize \x3d psize + m.size\n if (index \x3c msize) { Deep(size, p, go(m, index - psize), s) }\n else { Deep(size, p, m, go(s, index - msize)) }\n }\n }\n}\n\n\ndef each[A](seq: Seq[A]) { consume: (A) \x3d\x3e Unit }: Unit \x3d {\n\n def go(digit: Digit[A]): Unit \x3d digit match {\n case One(a) \x3d\x3e consume(a)\n case Two(a, b) \x3d\x3e consume(a); consume(b)\n case Three(a, b, c) \x3d\x3e consume(a); consume(b); consume(c)\n case Four(a, b, c, d) \x3d\x3e consume(a); consume(b); consume(c); consume(d)\n }\n\n def go(node: Node[A]): Unit \x3d node match {\n case Leaf2(a, b) \x3d\x3e consume(a); consume(b)\n case Leaf3(a, b, c) \x3d\x3e consume(a); consume(b); consume(c)\n case Node2(_, a, b) \x3d\x3e go(a); go(b)\n case Node3(_, a, b, c) \x3d\x3e go(a); go(b); go(c)\n }\n\n def go(digit: Digit[Node[A]]): Unit \x3d digit match {\n case One(a) \x3d\x3e go(a)\n case Two(a, b) \x3d\x3e go(a); go(b)\n case Three(a, b, c) \x3d\x3e go(a); go(b); go(c)\n case Four(a, b, c, d) \x3d\x3e go(a); go(b); go(c); go(d)\n }\n\n def go(tree: Tree[A]): Unit \x3d tree match {\n case NoFinger() \x3d\x3e ()\n case SingleFinger(v) \x3d\x3e go(v)\n case DeepFinger(_, p, m, s) \x3d\x3e go(p); go(m); go(s)\n }\n\n seq match {\n case Empty() \x3d\x3e ()\n case Single(v) \x3d\x3e consume(v)\n case Deep(_, p, m, s) \x3d\x3e go(p); go(m); go(s)\n }\n}\n\ndef each[A](seq: Seq[A]) { f: (A) {Control} \x3d\x3e Unit }: Unit \x3d try {\n seq.each { (el) \x3d\x3e\n try { f(el) {inner} } with inner: Control {\n def break() \x3d outer.break()\n def continue() \x3d ()\n }\n }\n} with outer: Control {\n def break() \x3d ()\n def continue() \x3d ()\n}\n\ndef eachReverse[A](seq: Seq[A]) { consume: A \x3d\x3e Unit }: Unit \x3d {\n\n def go(digit: Digit[A]): Unit \x3d digit match {\n case One(a) \x3d\x3e consume(a)\n case Two(a, b) \x3d\x3e consume(b); consume(a)\n case Three(a, b, c) \x3d\x3e consume(c); consume(b); consume(a)\n case Four(a, b, c, d) \x3d\x3e consume(d); consume(c); consume(b); consume(a)\n }\n\n def go(node: Node[A]): Unit \x3d node match {\n case Leaf2(a, b) \x3d\x3e consume(b); consume(a)\n case Leaf3(a, b, c) \x3d\x3e consume(c); consume(b); consume(a)\n case Node2(_, a, b) \x3d\x3e go(b); go(a)\n case Node3(_, a, b, c) \x3d\x3e go(c); go(b); go(a)\n }\n\n def go(digit: Digit[Node[A]]): Unit \x3d digit match {\n case One(a) \x3d\x3e go(a)\n case Two(a, b) \x3d\x3e go(b); go(a)\n case Three(a, b, c) \x3d\x3e go(c); go(b); go(a)\n case Four(a, b, c, d) \x3d\x3e go(d); go(c); go(b); go(a)\n }\n\n def go(tree: Tree[A]): Unit \x3d tree match {\n case NoFinger() \x3d\x3e ()\n case SingleFinger(v) \x3d\x3e go(v)\n case DeepFinger(_, p, m, s) \x3d\x3e go(s); go(m); go(p)\n }\n\n seq match {\n case Empty() \x3d\x3e ()\n case Single(v) \x3d\x3e consume(v)\n case Deep(_, p, m, s) \x3d\x3e go(s); go(m); go(p)\n }\n}\n\ndef eachReverse[A](seq: Seq[A]) { f: (A) {Control} \x3d\x3e Unit }: Unit \x3d try {\n seq.eachReverse { (el) \x3d\x3e\n try { f(el) {inner} } with inner: Control {\n def break() \x3d outer.break()\n def continue() \x3d ()\n }\n }\n} with outer: Control {\n def break() \x3d ()\n def continue() \x3d ()\n}\n\ndef toList[A](seq: Seq[A]): List[A] \x3d {\n var list: List[A] \x3d Nil()\n seq.eachReverse { el \x3d\x3e list \x3d Cons(el, list) }\n list\n}\n\ndef toSeq[A](l: List[A]): Seq[A] \x3d {\n def go(l: List[A], acc: Seq[A]): Seq[A] \x3d l match {\n case Nil() \x3d\x3e acc\n case Cons(head, tail) \x3d\x3e go(tail, consRight(acc, head))\n }\n go(l, Empty())\n}\n\n\nrecord Split[A, R](prefix: R, element: A, suffix: R)\n\ndef splitAt[A](seq: Seq[A], index: Int): (Seq[A], Seq[A]) / Exception[IndexOutOfBounds] \x3d {\n\n // invariant index is in digit\n def go(digit: Digit[A], index: Int): Split[A, List[A]] \x3d digit match {\n case One(a) \x3d\x3e Split([], a, [])\n case Two(a, b) \x3d\x3e if (index \x3d\x3d 0) Split([], a, [b]) else Split([a], b, [])\n case Three(a, b, c) \x3d\x3e\n if (index \x3d\x3d 0) Split([], a, [b, c])\n else if (index \x3d\x3d 1) Split([a], b, [c])\n else Split([a, b], c, [])\n case Four(a, b, c, d) \x3d\x3e\n if (index \x3d\x3d 0) Split([], a, [b, c, d])\n else if (index \x3d\x3d 1) Split([a], b, [c, d])\n else if (index \x3d\x3d 2) Split([a, b], c, [d])\n else Split([a, b, c], d, [])\n }\n\n def go(digit: Digit[Node[A]], index: Int): Split[Node[A], List[Node[A]]] \x3d digit match {\n case One(a) \x3d\x3e Split([], a, [])\n case Two(a, b) \x3d\x3e\n val asize \x3d a.size\n if (index \x3c asize) Split([], a, [b]) else Split([a], b, [])\n case Three(a, b, c) \x3d\x3e\n val asize \x3d a.size\n if (index \x3c asize) Split([], a, [b, c])\n else {\n val bsize \x3d asize + b.size\n if (index \x3c bsize) Split([a], b, [c])\n else Split([a, b], c, [])\n }\n case Four(a, b, c, d) \x3d\x3e\n val asize \x3d a.size\n if (index \x3c asize) Split([], a, [b, c, d])\n else {\n val bsize \x3d asize + b.size\n if (index \x3c bsize) Split([a], b, [c, d])\n else {\n val csize \x3d bsize + c.size\n if (index \x3c csize) Split([a, b], c, [d])\n else Split([a, b, c], d, [])\n }\n }\n }\n\n def left(p: List[Node[A]], m: Tree[A], s: Digit[Node[A]]): Tree[A] \x3d p match {\n case Nil() \x3d\x3e m.unconsFinger match {\n case TreeIsEmpty() \x3d\x3e s.toTree\n case TreeView(a, m2) \x3d\x3e deepFinger(a.toDigitNode, m2, s)\n }\n case _ \x3d\x3e deepFinger(p.toDigitNode, m, s)\n }\n\n def left(p: List[A], m: Tree[A], s: Digit[A]): Seq[A] \x3d p match {\n case Nil() \x3d\x3e m.unconsFinger match {\n case TreeIsEmpty() \x3d\x3e s.toSeq\n case TreeView(a, m2) \x3d\x3e deep(a.toDigit, m2, s)\n }\n case _ \x3d\x3e deep(p.toDigitNode, m, s)\n }\n def right(p: Digit[A], m: Tree[A], s: List[A]): Seq[A] \x3d s match {\n case Nil() \x3d\x3e m.unconsRightFinger match {\n case TreeIsEmpty() \x3d\x3e p.toSeq\n case TreeView(a, m2) \x3d\x3e deep(p, m2, a.toDigit)\n }\n case _ \x3d\x3e deep(p, m, s.toDigitNode)\n }\n\n\n def right(p: Digit[Node[A]], m: Tree[A], s: List[Node[A]]): Tree[A] \x3d s match {\n case Nil() \x3d\x3e m.unconsRightFinger match {\n case TreeIsEmpty() \x3d\x3e p.toTree\n case TreeView(a, m2) \x3d\x3e deepFinger(p, m2, a.toDigitNode)\n }\n case _ \x3d\x3e deepFinger(p, m, s.toDigitNode)\n }\n\n def go(tree: Tree[A], index: Int): Split[Node[A], Tree[A]] \x3d tree match {\n case NoFinger() \x3d\x3e println("Cannot happen!"); \x3c{ "Cannot happen!" }\x3e\n case SingleFinger(value) \x3d\x3e Split(NoFinger(), value, NoFinger())\n case DeepFinger(size, p, m, s) \x3d\x3e\n val psize \x3d p.sizeDeep;\n // It is in the prefix\n if (index \x3c psize) {\n val Split(pp, v, ps) \x3d go(p, index);\n Split(pp.toTree, v, left(ps, m, s))\n } else {\n val msize \x3d psize + m.size\n // It is somewhere in the spine\n if (index \x3c msize) {\n val Split(mp, v, ms) \x3d go(m, index - psize);\n val mpsize \x3d psize + mp.size;\n val Split(vp, w, vs) \x3d go(v.toDigitNode, index - mpsize);\n Split(right(p, mp, vp), w, left(vs, ms, s))\n // It is somewhere in the suffix\n } else {\n val Split(sp, v, ss) \x3d go(s, index - msize)\n Split(right(p, m, sp), v, ss.toTree)\n }\n }\n }\n\n if (index \x3c 0) {\n do raise(IndexOutOfBounds(), "...")\n } else if (index \x3e\x3d seq.size) {\n (seq, Empty())\n } else seq match {\n case Empty() \x3d\x3e (Empty(), Empty())\n case Single(v) \x3d\x3e (Empty(), seq)\n case Deep(size, p, m, s) \x3d\x3e\n val psize \x3d p.size;\n // It is in the prefix\n if (index \x3c psize) {\n val Split(pp, v, ps) \x3d go(p, index);\n (toSeq(pp), left(Cons(v, ps), m, s))\n } else {\n val msize \x3d psize + m.size\n // It is somewhere in the spine\n if (index \x3c msize) {\n val Split(mp, v, ms) \x3d go(m, index - psize);\n val mpsize \x3d psize + mp.size;\n val Split(vp, w, vs) \x3d go(v.toDigit, index - mpsize);\n (right(p, mp, vp), left(Cons(w, vs), ms, s))\n // It is somewhere in the suffix\n } else {\n val Split(sp, v, ss) \x3d go(s, index - msize);\n (right(p, m, sp), Cons(v, ss).toSeq)\n }\n }\n }\n}\n\n\ndef insert[A](seq: Seq[A], value: A, index: Int): Seq[A] / Exception[IndexOutOfBounds] \x3d\n splitAt(seq, index) match {\n case (prefix, suffix) \x3d\x3e prefix.concat(cons(value, suffix))\n }\n\n\n\n// Internal conversions\n// --------------------\n\ndef toTree[A](digit: Digit[Node[A]]): Tree[A] \x3d digit match {\n case One(a) \x3d\x3e SingleFinger(a)\n case Two(a, b) \x3d\x3e deepFinger(One(a), NoFinger(), One(b))\n case Three(a, b, c) \x3d\x3e deepFinger(Two(a, b), NoFinger(), One(c))\n case Four(a, b, c, d) \x3d\x3e deepFinger(Three(a, b, c), NoFinger(), One(d))\n}\n\ndef toTree[A](digit: List[Node[A]]): Tree[A] \x3d digit match {\n case Nil() \x3d\x3e NoFinger()\n case Cons(a, Nil()) \x3d\x3e SingleFinger(a)\n case Cons(a, Cons(b, Nil())) \x3d\x3e deepFinger(One(a), NoFinger(), One(b))\n case Cons(a, Cons(b, Cons(c, Nil()))) \x3d\x3e deepFinger(Two(a, b), NoFinger(), One(c))\n case Cons(a, Cons(b, Cons(c, Cons(d, Nil())))) \x3d\x3e deepFinger(Three(a, b, c), NoFinger(), One(d))\n case _ \x3d\x3e \x3c\x3e\n}\n\ndef toSeq[A](d: Digit[A]): Seq[A] \x3d d match {\n case One(a) \x3d\x3e Single(a)\n case Two(a, b) \x3d\x3e Deep(2, One(a), NoFinger(), One(b))\n case Three(a, b, c) \x3d\x3e Deep(3, Two(a, b), NoFinger(), One(c))\n case Four(a, b, c, d) \x3d\x3e Deep(4, Three(a, b, c), NoFinger(), One(d))\n}\n\ndef toDigitNode[A](n: Node[A]): Digit[Node[A]] \x3d n match {\n case Node2(_, a, b) \x3d\x3e Two(a, b)\n case Node3(_, a, b, c) \x3d\x3e Three(a, b, c)\n case _ \x3d\x3e \x3c{ "Should not happen" }\x3e\n}\n\ndef toDigitNode[A](n: List[A]): Digit[A] \x3d n match {\n case Cons(a, Nil()) \x3d\x3e One(a)\n case Cons(a, Cons(b, Nil())) \x3d\x3e Two(a, b)\n case Cons(a, Cons(b, Cons(c, Nil()))) \x3d\x3e Three(a, b, c)\n case Cons(a, Cons(b, Cons(c, Cons(d, Nil())))) \x3d\x3e Four(a, b, c, d)\n case _ \x3d\x3e \x3c{ "Should not happen" }\x3e\n}\n\ndef toDigit[A](n: Node[A]): Digit[A] \x3d n match {\n case Leaf2(a, b) \x3d\x3e Two(a, b)\n case Leaf3(a, b, c) \x3d\x3e Three(a, b, c)\n case _ \x3d\x3e \x3c{ "Should not happen" }\x3e\n}\n\ndef toList[A](digit: Digit[A]): List[A] \x3d digit match {\n case One(a) \x3d\x3e Cons(a, Nil())\n case Two(a, b) \x3d\x3e Cons(a, Cons(b, Nil()))\n case Three(a, b, c) \x3d\x3e Cons(a, Cons(b, Cons(c, Nil())))\n case Four(a, b, c, d) \x3d\x3e Cons(a, Cons(b, Cons(c, Cons(d, Nil()))))\n}\n\ndef map[A, B](seq: Seq[A]) { f: A \x3d\x3e B }: Seq[B] \x3d {\n var result: Seq[B] \x3d Empty()\n seq.each { a \x3d\x3e result \x3d result.consRight(f(a)) }\n result\n}\n\ndef map[A, B](seq: Seq[A]) { f: (A) {Control} \x3d\x3e B }: Seq[B] \x3d {\n var result: Seq[B] \x3d Empty()\n seq.each { (a) {label} \x3d\x3e result \x3d result.consRight(f(a) {label}) }\n result\n}\n\n\n// TODO iterator interface\n//\n\n// interface Iterator[A] {\n// def value(): Option[A]\n// def next(): Unit\n// }\n\n// interface Generator[A] {\n// def yield(value: A): Unit\n// }\n\n// def iterate[A, R](seq: Seq[A]) { prog: {Iterator[A]} \x3d\x3e R }: R \x3d {\n\n// var k: Unit \x3d\x3e Unit at {} \x3d fun(unit: Unit) { () }\n// var v: Option[A] \x3d None()\n\n// try { seq.each { el \x3d\x3e do yield(el) } } with Generator[A] {\n// def yield(value) \x3d { v \x3d Some(value); k \x3d box resume }\n// }\n\n// new Iterator[A] {\n// def value() \x3d v\n// def next() \x3d (unbox k)(())\n// }\n// }\n\n\n// TODO equality comparison\n//')} +Gv("common/result.effekt",'module result\n\nimport effekt\nimport option\nimport exception\n\n/**\n * Represents the result of a potentially failing computation.\n * It is the "reification" of the Exception[E] effect.\n */\ntype Result[A, E] {\n Error(exception: E, msg: String);\n Success(a: A)\n}\n\n/**\n * Represent ("reify") the result of a potentially failing computation.\n */\ndef result[A, E] { f: \x3d\x3e A / Exception[E] }: Result[A, E] \x3d try {\n Success(f())\n} with Exception[E] {\n def raise(exc, msg) \x3d Error(exc, msg)\n}\ndef result[A, E](proxy: on[E]) { f: \x3d\x3e A / Exception[E] }: Result[A, E] \x3d try {\n Success(f())\n} with Exception[E] {\n def raise(exc, msg) \x3d Error(exc, msg)\n}\n\n/**\n * Extracts the value of a result, if available\n * Monadic "reflection"\n */\ndef value[A, E](r: Result[A, E]): A / Exception[E] \x3d r match {\n case Success(a) \x3d\x3e a\n case Error(exc, msg) \x3d\x3e do raise(exc, msg)\n}\n\n/**\n * Converts a result to an option forgetting the error details\n */\ndef toOption[A, E](r: Result[A, E]): Option[A] \x3d r match {\n case Success(a) \x3d\x3e Some(a)\n case Error(exc, msg) \x3d\x3e None()\n}\n')} XE.prototype=new A7;XE.prototype.constructor=XE;function Gd(a){a.XK||(a.WK=new h3,a.XK=!0);return a.WK}XE.prototype.$classData=t({US:0},!1,"effekt.LanguageServer$context$",{US:1,nba:1,e:1,Mba:1,mba:1,oba:1,wba:1,Dba:1,pba:1,sba:1,Jba:1,qba:1});function JS(a,b,c){this.lZ=b;if(null===c)throw mo();}JS.prototype=new H3;JS.prototype.constructor=JS;JS.prototype.n=function(){return 0};JS.prototype.o=function(a){return PZ(a)};JS.prototype.p=function(){return this.lZ}; JS.prototype.$classData=t({kZ:0},!1,"effekt.source.FeatureFlag$$anon$1",{kZ:1,iZ:1,e:1,i:1,m:1,xa:1,g:1,z:1,NK:1,bb:1,Hb:1,$e:1});function A8(){}A8.prototype=new X3;A8.prototype.constructor=A8;function B8(){}e=B8.prototype=A8.prototype;e.d=function(a){return D7(this,a)};e.l=function(){var a=CE();return DE(a,this,a.Iy)};e.eb=function(){mZ||(mZ=new lZ);return mZ};e.Vb=function(){return"Set"};e.k=function(){return M0(this)};e.FS=function(a){return this.ye(a)};e.$n=function(a){return this.yb(a)}; e.za=function(a){return $0(this,a)};e.q=function(a){return this.la(a)};function C8(a,b){if(a===b)return!0;if(b&&b.$classData&&b.$classData.ab.$p)if(a.Q()===b.Q())try{return a.ye(new w(c=>LC(MC(),b.sb(c.H(),bZ().CR),c.G())))}catch(c){if(c instanceof BU)return!1;throw c;}else return!1;else return!1}function Oq(a){this.Zu=a}Oq.prototype=new p;Oq.prototype.constructor=Oq;e=Oq.prototype;e.IP=function(a){return this.Zu-pa(a)|0};e.k=function(){return""+$a(this.Zu)};e.l=function(){return this.Zu};