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scc_parse.y
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scc_parse.y
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/* ScummC
* Copyright (C) 2004-2006 Alban Bedel
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
/**
* @file scc_parse.y
* @ingroup scc
* @brief ScummC compiler
*/
%define api.pure full
%parse-param {struct scc_parser *v_sccp}
%lex-param {scc_parser_t *YYLEX_PARAM}
%{
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "scc_fd.h"
#include "scc_util.h"
#include "scc_parse.h"
#include "scc_ns.h"
#include "scc_img.h"
#include "scc_cost.h"
#include "scc.h"
#include "scc_roobj.h"
#include "scc_code.h"
#include "scc_param.h"
#include "scc_parse.tab.h"
#include "scc_lex.h"
#include "scc_help.h"
#define YYERROR_VERBOSE 1
typedef struct scc_parser {
// targeted vm version
scc_target_t* target;;
scc_lex_t* lex;
scc_ns_t* ns;
scc_roobj_t* roobj_list;
scc_roobj_t* roobj;
scc_roobj_obj_t* obj;
int local_vars;
int local_scr;
int cycl;
// ressources include paths
char** res_path;
// deps
char do_deps;
int num_deps;
char** deps;
} scc_parser_t;
#define YYPARSE_PARAM v_sccp
#define sccp ((scc_parser_t*)v_sccp)
#define YYLEX_PARAM sccp->lex
// redefined the function names
#define yyparse scc_parser_parse_internal
#define yylex scc_lex_lex
#define yyerror(loc,sccp,msg) scc_parser_error(sccp,loc,msg)
int scc_parser_error (scc_parser_t* p,YYLTYPE *llocp, const char *s);
void scc_parser_add_dep(scc_parser_t* p, char* dep);
static void scc_parser_find_res(scc_parser_t* p, char** file_ptr);
#define SCC_LIST_ADD(list,last,c) if(c){ \
if(last) last->next = c; \
else list = c; \
for(last = c ; last && last->next ; last = last->next); \
}
#define SCC_BOP(d,bop,a,cop,b) { \
if(a->type == SCC_ST_VAL && \
b->type == SCC_ST_VAL) { \
a->val.i = ((int16_t)a->val.i) bop ((int16_t)b->val.i); \
free(b); \
d = a; \
} else { \
d = calloc(1,sizeof(scc_statement_t)); \
d->type = SCC_ST_OP; \
d->val.o.type = SCC_OT_BINARY; \
d->val.o.op = cop; \
d->val.o.argc = 2; \
d->val.o.argv = a; \
a->next = b; \
} \
}
#define SCC_ABORT(at,msg...) { \
scc_log(LOG_ERR,"%s: ",scc_lex_get_file(sccp->lex)); \
scc_log(LOG_ERR,msg); \
YYABORT; \
}
// output filename
static char* scc_output = NULL;
scc_func_t* scc_get_func(scc_parser_t* p, char* sym) {
int i,j;
if(!sym) return NULL;
for(i = 0 ; p->target->func_list[i] ; i++) {
scc_func_t* list = p->target->func_list[i];
for(j = 0 ; list[j].sym ; j++) {
if(strcmp(sym,list[j].sym)) continue;
return &list[j];
}
}
return NULL;
}
char* scc_statement_check_func(scc_call_t* c) {
int n,min_argc = c->func->argc;
scc_statement_t* a;
// should be big enouth
static char func_err[2048];
while(min_argc > 0 && (c->func->argt[min_argc-1] & SCC_FA_DEFAULT))
min_argc--;
if(c->argc > c->func->argc || c->argc < min_argc) {
sprintf(func_err,"Function %s needs %d args, %d found.\n",
c->func->sym,c->func->argc,c->argc);
return func_err;
}
for(n = 0, a = c->argv ; a ; n++, a = a->next) {
if(c->func->argt[n] == SCC_FA_VAL) {
if(a->type == SCC_ST_STR ||
a->type == SCC_ST_LIST) {
sprintf(func_err,"Argument %d of call to %s is of the wrong type.\n",
n+1,c->func->sym);
return func_err;
}
} else if(c->func->argt[n] == SCC_FA_ARRAY) {
if(a->type != SCC_ST_VAR ||
!(a->val.v.r->subtype & SCC_VAR_ARRAY)) {
sprintf(func_err,"Argument %d of call to %s must be an array variable.\n",
n+1,c->func->sym);
return func_err;
}
} else if(c->func->argt[n] == SCC_FA_LIST &&
a->type != SCC_ST_LIST) {
sprintf(func_err,"Argument %d of %s must be a list.\n",
n+1,c->func->sym);
return func_err;
} else if(c->func->argt[n] == SCC_FA_STR &&
a->type != SCC_ST_STR) {
sprintf(func_err,"Argument %d of %s must be a string.\n",
n+1,c->func->sym);
return func_err;
}
}
return NULL;
}
%}
%union {
int integer;
char* str;
char** strlist;
scc_symbol_t* sym;
scc_statement_t* st;
scc_instruct_t* inst;
scc_scr_arg_t* arg;
scc_script_t* scr;
scc_str_t* strvar;
int* intlist;
scc_verb_script_t* vscr;
}
// Operators, the order is defining the priority.
%token AADD
%token ASUB
%token AMUL
%token ADIV
%token AAND
%token AOR
%token INC
%token DEC
%token PREINC
%token POSTINC
%token PREDEC
%token POSTDEC
%right <integer> ASSIGN
%right <integer> '?' ':'
%left <integer> LOR
%left <integer> LAND
%nonassoc <integer> IS
%left <integer> '|'
%left <integer> '&'
%left <integer> NEQ EQ
%left <integer> '>' GE
%left <integer> '<' LE
%left <integer> '-' '+'
%left <integer> '*' '/'
%right <integer> NEG
%right <integer> '!'
%nonassoc <integer> SUFFIX
%right PREFIX
%left POSTFIX
%token <integer> INTEGER
%token <integer> RESTYPE
%token <str> STRING
%token <strvar> STRVAR
%token <str> SYM
%token <integer> TYPE
%token <integer> NUL
%token <integer> BRANCH RETURN
%token ROOM
%token OBJECT
%token NS
%token SCRIPT
%token VERB
%token ACTOR
%token VOICE
%token CYCL
%nonassoc <integer> IF
%nonassoc ELSE
%nonassoc FOR
%nonassoc <integer> WHILE
%nonassoc DO
%nonassoc SWITCH
%nonassoc CASE
%nonassoc DEFAULT
%nonassoc CUTSCENE
%nonassoc CLASS
%nonassoc TRY
%nonassoc OVERRIDE
%token <integer> SCRTYPE
%token ERROR
%type <strvar> str
%type <strvar> string
%type <integer> location
%type <st> dval
%type <st> cargs
%type <st> var
%type <st> call
%type <st> isargs
%type <st> isarglist
%type <st> isarg
%type <sym> vdecl
%type <st> statement
%type <st> statements
%type <st> opt_statements
%type <inst> instruct
%type <inst> ifblock
%type <st> caseval
%type <st> caseblock
%type <inst> switchblock
%type <inst> loopblock
%type <inst> cutsceneblock
%type <inst> block
%type <inst> instructions
%type <inst> oneinstruct
%type <inst> dobody
%type <inst> body
%type <inst> loophead
%type <str> label
%type <inst> dohead
%type <inst> switchhead
%type <scr> scriptbody
%type <inst> verbcode
%type <sym> verbentry
%type <vscr> verbsblock
%type <integer> gvardecl
%type <integer> gresdecl
%type <integer> groomresdecl
%type <integer> globalres
%type <integer> roomres
%type <integer> resdecl
%type <str> resdef
%type <integer> scripttype
%type <arg> scriptargs
%type <sym> roomscrdecl
%type <sym> roomobjdecl
%type <sym> cycledecl
%type <sym> voicedecl
%type <strlist> zbufs
%type <intlist> synclist
%type <integer> typemod
%type <integer> natural
%%
srcfile: /* empty */
| srcs
;
srcs: src
| srcs src
;
src: room
| gdecl
;
gdecl: gvardecl ';'
{}
| gresdecl ';'
{}
| groomresdecl ';'
{}
| groomdecl ';'
;
gvardecl: TYPE typemod SYM location
{
if($1 == SCC_VAR_BIT && !$2)
scc_ns_decl(sccp->ns,NULL,$3,SCC_RES_BVAR,$1,$4);
else
scc_ns_decl(sccp->ns,NULL,$3,SCC_RES_VAR,$1 | $2,$4);
$$ = $1;
}
| gvardecl ',' typemod SYM location
{
if($1 == SCC_VAR_BIT && !$3)
scc_ns_decl(sccp->ns,NULL,$4,SCC_RES_BVAR,$1,$5);
else
scc_ns_decl(sccp->ns,NULL,$4,SCC_RES_VAR,$1 | $3,$5);
$$ = $1;
}
;
typemod: /* nothing */
{
$$ = 0;
}
| '*'
{
$$ = SCC_VAR_ARRAY;
}
;
// room must be put outside of globalres
// otherwise it conflict with roombdecl
groomdecl: ROOM SYM location
{
scc_ns_decl(sccp->ns,NULL,$2,SCC_RES_ROOM,0,$3);
}
| groomdecl ',' SYM location
{
scc_ns_decl(sccp->ns,NULL,$3,SCC_RES_ROOM,0,$4);
}
;
gresdecl: globalres SYM location
{
scc_ns_decl(sccp->ns,NULL,$2,$1,0,$3);
}
| gresdecl ',' SYM location
{
scc_ns_decl(sccp->ns,NULL,$3,$1,0,$4);
}
;
globalres: ACTOR
{
$$ = SCC_RES_ACTOR;
}
| VERB
{
$$ = SCC_RES_VERB;
}
| CLASS
{
$$ = SCC_RES_CLASS;
}
;
// cost, sound, chset, object, script, voice, cycl
groomresdecl: roomres SYM NS SYM location
{
scc_ns_decl(sccp->ns,$2,$4,$1,0,$5);
$$ = $1; // hack to propagte the type
}
| groomresdecl ',' SYM NS SYM location
{
scc_ns_decl(sccp->ns,$3,$5,$1,0,$6);
}
;
roomres: RESTYPE
| OBJECT
{
$$ = SCC_RES_OBJ;
}
| SCRIPT
{
$$ = SCC_RES_SCR;
}
| VOICE
{
$$ = SCC_RES_VOICE;
}
| CYCL
{
$$ = SCC_RES_CYCL;
}
;
// This allow us to have the room declared before we parse the body.
// At this point the roobj object is created.
roombdecl: ROOM SYM location
{
scc_symbol_t* sym = scc_ns_decl(sccp->ns,NULL,$2,SCC_RES_ROOM,0,$3);
scc_ns_get_rid(sccp->ns,sym);
scc_ns_push(sccp->ns,sym);
sccp->roobj = scc_roobj_new(sccp->target,sym);
}
;
// Here we should have the whole room.
room: roombdecl roombody
{
scc_log(LOG_DBG,"Room done :)\n");
sccp->local_scr = sccp->target->max_global_scr;
memset(&sccp->ns->as[SCC_RES_LSCR],0,0x10000/8);
sccp->cycl = 1;
scc_ns_clear(sccp->ns,SCC_RES_CYCL);
scc_ns_pop(sccp->ns);
if(!sccp->roobj->scr &&
!sccp->roobj->lscr &&
!sccp->roobj->obj &&
!sccp->roobj->res &&
!sccp->roobj->cycl &&
!sccp->roobj->image) {
scc_log(LOG_DBG,"Room is empty, only declarations.\n");
scc_roobj_free(sccp->roobj);
} else {
sccp->roobj->next = sccp->roobj_list;
sccp->roobj_list = sccp->roobj;
}
sccp->roobj = NULL;
}
;
roombody: '{' '}'
| '{' roombodyentries '}'
//| '{' roomdecls '}'
| '{' roomdecls roombodyentries '}'
;
roombodyentries: roombodyentry
| roombodyentries roombodyentry
;
// scripts, both local and global
roombodyentry: roomscrdecl '{' scriptbody '}'
{
if(!$1->rid) scc_ns_get_rid(sccp->ns,$1);
if($3) {
$3->sym = $1;
scc_roobj_add_scr(sccp->roobj,$3);
}
scc_ns_clear(sccp->ns,SCC_RES_LVAR);
scc_ns_pop(sccp->ns);
}
// forward declaration
| roomscrdecl ';'
{
// well :)
scc_ns_clear(sccp->ns,SCC_RES_LVAR);
scc_ns_pop(sccp->ns);
}
// objects
| roomobjdecl '{' objectparams objectverbs '}'
{
if(!$1->rid) scc_ns_get_rid(sccp->ns,$1);
// add the obj to the room
scc_roobj_add_obj(sccp->roobj,sccp->obj);
sccp->obj = NULL;
}
// forward declaration
| roomobjdecl ';'
{
scc_roobj_obj_free(sccp->obj);
sccp->obj = NULL;
}
| voicedef ';'
{}
| voicedecl ';'
{}
| cycledef ';'
{}
| cycledecl ';'
{}
| resdecl ';'
{}
| gvardecl ';'
{}
;
roomscrdecl: scripttype SCRIPT SYM '(' scriptargs ')' location
{
scc_scr_arg_t* a = $5;
scc_symbol_t* s;
s = scc_ns_decl(sccp->ns,NULL,$3,$1,0,$7);
if(!s) SCC_ABORT(@3,"Failed to declare script %s.\n",$3);
if($1 == SCC_RES_LSCR && s->addr < 0 &&
strcmp($3,"entry") && strcmp($3,"exit"))
if(!scc_ns_alloc_sym_addr(sccp->ns,s,&sccp->local_scr))
SCC_ABORT(@3,"Failed to allocate local script address.\n");
scc_ns_push(sccp->ns,s);
// declare the arguments
sccp->local_vars = 0;
while(a) {
scc_ns_decl(sccp->ns,NULL,a->sym,SCC_RES_LVAR,a->type,sccp->local_vars);
sccp->local_vars++;
a = a->next;
}
$$ = s;
}
;
roomobjdecl: OBJECT SYM location
{
scc_symbol_t* sym;
if(sccp->obj)
SCC_ABORT(@1,"Something went wrong with object declarations.\n");
sym = scc_ns_decl(sccp->ns,NULL,$2,SCC_RES_OBJ,0,$3);
if(!sym) SCC_ABORT(@1,"Failed to declare object %s.\n",$2);
sccp->obj = scc_roobj_obj_new(sym);
$$ = sym;
}
;
// the basic room parameters such as image, box, zplanes, etc
roomdecls: roomdecl
| roomdecls roomdecl
;
roomdecl: SYM ASSIGN STRING ';'
{
if($2 != '=')
SCC_ABORT(@2,"Invalid operator for parameter setting.\n");
scc_parser_find_res(sccp,&$3);
if(!scc_roobj_set_param(sccp->roobj,sccp->ns,$1,$3))
SCC_ABORT(@1,"Failed to set room %s.\n",$1);
// add dep
if(sccp->do_deps) scc_parser_add_dep(sccp,$3);
}
| SYM ASSIGN '{' zbufs '}' ';'
{
int i;
if($2 != '=')
SCC_ABORT(@2,"Invalid operator for parameter setting.\n");
for(i = 0 ; $4[i] ; i++) {
if($4[i][0] == '\0') continue;
if(!scc_roobj_set_zplane(sccp->roobj,i+1,$4[i]))
SCC_ABORT(@1,"Failed to set room zplane %d.\n",i+1);
}
}
| SYM ASSIGN INTEGER ';'
{
if($2 != '=')
SCC_ABORT(@2,"Invalid operator for parameter setting.\n");
if(strcmp($1,"trans"))
SCC_ABORT(@1,"Rooms have no parameter named %s.\n",$1);
if($3 < 0 || $3 > 255)
SCC_ABORT(@3,"Invalid transparent color index: %d\n",$3);
sccp->roobj->trans = $3;
}
;
// The optional room resources like cycle, voice, charset, etc
cycledef: cycledecl ASSIGN '{' INTEGER ',' INTEGER ',' INTEGER ',' INTEGER '}'
{
if($2 != '=')
SCC_ABORT(@3,"Invalid operator for cycle declaration.\n");
if(!scc_roobj_add_cycl(sccp->roobj,$1,$4,$6,$8,$10))
SCC_ABORT(@1,"Failed to add cycl.\n");
}
;
cycledecl: CYCL SYM location
{
$$ = scc_ns_decl(sccp->ns,NULL,$2,SCC_RES_CYCL,0,$3);
if(!$$) SCC_ABORT(@1,"Cycl declaration failed.\n");
if($$->addr < 0 && !scc_ns_alloc_sym_addr(sccp->ns,$$,&sccp->cycl))
SCC_ABORT(@1,"Failed to allocate cycle address.\n");
}
;
voicedef: voicedecl ASSIGN '{' STRING ',' synclist '}'
{
if($2 != '=')
SCC_ABORT(@2,"Invalid operator for voice declaration.\n");
if(!$1->rid) scc_ns_get_rid(sccp->ns,$1);
scc_parser_find_res(sccp,&$4);
if(!scc_roobj_add_voice(sccp->roobj,$1,$4,$6[0],$6+1))
SCC_ABORT(@1,"Failed to add voice.");
if(sccp->do_deps) scc_parser_add_dep(sccp,$4);
free($6);
}
| voicedecl ASSIGN '{' STRING '}'
{
if($2 != '=')
SCC_ABORT(@3,"Invalid operator for voice declaration.\n");
if(!$1->rid) scc_ns_get_rid(sccp->ns,$1);
scc_parser_find_res(sccp,&$4);
if(!scc_roobj_add_voice(sccp->roobj,$1,$4,0,NULL))
SCC_ABORT(@1,"Failed to add voice.");
if(sccp->do_deps) scc_parser_add_dep(sccp,$4);
}
;
voicedecl: VOICE SYM
{
$$ = scc_ns_decl(sccp->ns,NULL,$2,SCC_RES_VOICE,0,-1);
if(!$$) SCC_ABORT(@1,"Declaration failed.\n");
}
;
synclist: INTEGER
{
$$ = malloc(2*sizeof(int));
$$[0] = 1;
$$[1] = $1;
}
| synclist ',' INTEGER
{
int l = $1[0]+1;
$$ = realloc($1,(l+1)*sizeof(int));
$$[l] = $3;
$$[0] = l;
}
;
// generic resource declaration/definition
resdecl: RESTYPE SYM location resdef
{
scc_symbol_t* r = scc_ns_decl(sccp->ns,NULL,$2,$1,0,$3);
if($4) {
scc_parser_find_res(sccp,&$4);
// then we need to add that to the roobj
if(!sccp->do_deps && !scc_roobj_add_res(sccp->roobj,r,$4))
SCC_ABORT(@2,"Failed to declare %s.\n",$2);
if(sccp->do_deps) scc_parser_add_dep(sccp,$4);
if(!r->rid) scc_ns_get_rid(sccp->ns,r);
}
$$ = $1; // propagate type
}
| resdecl ',' SYM location resdef
{
scc_symbol_t* r = scc_ns_decl(sccp->ns,NULL,$3,$1,0,$4);
if($5) {
scc_parser_find_res(sccp,&$5);
// then we need to add that to the roobj
if(!sccp->do_deps && !scc_roobj_add_res(sccp->roobj,r,$5))
SCC_ABORT(@3,"Failed to declare %s.\n",$3);
if(sccp->do_deps) scc_parser_add_dep(sccp,$5);
if(!r->rid) scc_ns_get_rid(sccp->ns,r);
}
$$ = $1; // propagate type
}
;
resdef: /* NOTHING */
{
$$ = NULL;
}
| ASSIGN STRING
{
if($1 != '=')
SCC_ABORT(@1,"Invalid operator for resource definition.\n");
$$ = $2;
}
;
// params chain, we can't use the same as the room
// bcs we don't want ressource declaration here
objectparams: objectparam ';'
| objectparams objectparam ';'
;
// used by objects
objectparam: SYM ASSIGN STRING
{
if($2 != '=')
SCC_ABORT(@2,"Invalid operator for parameter setting.\n");
if(!scc_roobj_obj_set_param(sccp->obj,$1,$3))
SCC_ABORT(@1,"Failed to set object parameter.\n");
}
| SYM ASSIGN natural
{
if($2 != '=')
SCC_ABORT(@2,"Invalid operator for parameter setting.\n");
if(!scc_roobj_obj_set_int_param(sccp->obj,$1,$3))
SCC_ABORT(@1,"Failed to set object parameter.\n");
}
| SYM ASSIGN '{' imgdecls '}'
{
if($2 != '=')
SCC_ABORT(@2,"Invalid operator for parameter setting.\n");
// bitch on the keyword
if(strcmp($1,"states"))
SCC_ABORT(@1,"Expected \"images\".\n");
}
| SYM ASSIGN SYM
{
scc_symbol_t* sym;
if($2 != '=')
SCC_ABORT(@2,"Invalid operator for parameter setting.\n");
if(!strcmp($1,"owner")) {
sym = scc_ns_get_sym(sccp->ns,NULL,$3);
if(!sym)
SCC_ABORT(@3,"%s is not a declared actor.\n",$3);
if(sym->type != SCC_RES_ACTOR)
SCC_ABORT(@3,"%s is not an actor.\n",sym->sym);
sccp->obj->owner = sym;
} else if(!strcmp($1,"parent")) {
sym = scc_ns_get_sym(sccp->ns,NULL,$3);
if(!sym)
SCC_ABORT(@3,"%s is not a declared object.\n",$3);
if(sym->type != SCC_RES_OBJ)
SCC_ABORT(@3,"%s is not an object.\n",sym->sym);
if(sym->parent != sccp->roobj->sym)
SCC_ABORT(@3,"%s doesn't belong to room %s.\n",sym->sym,sccp->roobj->sym->sym);
sccp->obj->parent = sym;
} else
SCC_ABORT(@1,"Expected 'owner' or 'parent'.\n");
}
| CLASS ASSIGN '{' classlist '}'
{
if($2 != '=')
SCC_ABORT(@2,"Invalid operator for parameter setting.\n");
}
;
classlist: SYM
{
scc_symbol_t* sym = scc_ns_get_sym(sccp->ns,NULL,$1);
if(!sym)
SCC_ABORT(@1,"%s is not a declared class.\n",$1);
if(sym->type != SCC_RES_CLASS)
SCC_ABORT(@1,"%s is not a class in the current context.\n",$1);
// allocate an rid
if(!sym->rid) scc_ns_get_rid(sccp->ns,sym);
if(!scc_roobj_obj_set_class(sccp->obj,sym))
SCC_ABORT(@1,"Failed to set object class.\n");
}
| classlist ',' SYM
{
scc_symbol_t* sym = scc_ns_get_sym(sccp->ns,NULL,$3);
if(!sym)
SCC_ABORT(@3,"%s is not a declared class.\n",$3);
if(sym->type != SCC_RES_CLASS)
SCC_ABORT(@3,"%s is not a class in the current context.\n",$3);
// allocate an rid
if(!sym->rid) scc_ns_get_rid(sccp->ns,sym);
if(!scc_roobj_obj_set_class(sccp->obj,sym))
SCC_ABORT(@3,"Failed to set object class.\n");
}
;
imgdecls: imgdecl
| imgdecls ',' imgdecl
;
imgdecl: '{' natural ',' natural ',' STRING '}'
{
scc_parser_find_res(sccp,&$6);
if(!scc_roobj_obj_add_state(sccp->obj,$2,$4,$6,NULL))
SCC_ABORT(@1,"Failed to add room state\n");
if(sccp->do_deps) scc_parser_add_dep(sccp,$6);
}
| '{' natural ',' natural ',' STRING ',' '{' zbufs '}' '}'
{
scc_parser_find_res(sccp,&$6);
if(!scc_roobj_obj_add_state(sccp->obj,$2,$4,$6,$9))
SCC_ABORT(@2,"Failed to add room state.\n");
if(sccp->do_deps) scc_parser_add_dep(sccp,$6);
}
;
zbufs: STRING
{
scc_parser_find_res(sccp,&$1);
scc_parser_add_dep(sccp,$1);
$$ = malloc(2*sizeof(char*));
$$[0] = $1;
$$[1] = NULL;
}
| zbufs ',' STRING
{
int l;
scc_parser_find_res(sccp,&$3);
scc_parser_add_dep(sccp,$3);
for(l = 0 ; $1[l] ; l++);
$$ = realloc($1,(l+2)*sizeof(char*));
$$[l] = $3;
$$[l+1] = NULL;
}
;
objectverbs: /* nothing */
{
}
| verbentrydecl '{' vardecl verbsblock '}'
{
scc_verb_script_t* v,*l;
scc_script_t* scr;
for(v = $4 ; v ; l = v, v = v->next,free(l) ) {
if(!sccp->do_deps && v->inst)
scr = scc_script_new(sccp->ns,v->inst,SCC_OP_VERB_RET,v->next ? 0 : 1);
else
scr = calloc(1,sizeof(scc_script_t));
scr->sym = v->sym;
if(!scc_roobj_obj_add_verb(sccp->obj,scr))
SCC_ABORT(@1,"Failed to add verb %s.\n",v->sym ? v->sym->sym : "default");
}
scc_ns_clear(sccp->ns,SCC_RES_LVAR);
scc_ns_pop(sccp->ns);
}
;
verbentrydecl: VERB '(' scriptargs ')'
{
scc_scr_arg_t* a = $3;
// push the obj for the local vars
scc_ns_push(sccp->ns,sccp->obj->sym);
// declare the arguments
sccp->local_vars = 0;
while(a) {
scc_ns_decl(sccp->ns,NULL,a->sym,SCC_RES_LVAR,a->type,sccp->local_vars);
sccp->local_vars++;
a = a->next;
}
}
;
verbsblock: verbentry verbcode
{
$$ = calloc(1,sizeof(scc_verb_script_t));
$$->sym = $1;
$$->inst = $2;
}
| verbsblock verbentry verbcode
{
$$ = $1;
for(; $1 ; $1 = $1->next) {
if($1->sym == $2)
SCC_ABORT(@2,"Verb %s is already defined.\n",
$2 ? $2->sym : "default");
if(!$1->next) break;
}
$1->next = calloc(1,sizeof(scc_verb_script_t));
$1 = $1->next;
$1->sym = $2;
$1->inst = $3;
}
;
verbcode: /* nothing */
{
$$ = NULL;
}
| instructions
;
verbentry: CASE SYM ':'
{
scc_symbol_t* sym = scc_ns_get_sym(sccp->ns,NULL,$2);
if(!sym)
SCC_ABORT(@1,"%s is not a declared verb.\n",$2);
if(sym->type != SCC_RES_VERB)
SCC_ABORT(@1,"%s is not a verb in the current context.\n",$2);
// allocate an rid
if(!sym->rid) scc_ns_get_rid(sccp->ns,sym);
$$ = sym;
}
| DEFAULT ':'
{
$$ = NULL;
}
;
// script can be local or global. Dunno yet what will be default,
// probably global.
scripttype: /* empty */
{
$$ = SCC_RES_SCR;
}
| SCRTYPE
{
$$ = $1;
}
;
scriptargs: /* */
{