Multiway match typechecking and translation for pattern guards #2
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As discussed, rebased onto test changes in other PRs to consolidate tests before restructuring and splitting test cases into different test files. |
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Rebase onto new parsing |
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Co-authored-by: Nick Roberts <[email protected]>
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* multiway typechecking and translation * update jane test output * self-review: format and style in translcore * more translcore/typedtree cleanup * expose value `is_guarded_rhs` * fix typedtree printer * make discussed changes to ocamldoc * format: remove unnecessary parens in pattern Co-authored-by: Nick Roberts <[email protected]> * improve parmatch variable naming * explain [exp_attributes] and [exp_extra] weirdness * improve translcore [event_function*] naming * inlined transl_body in transl_rhs * rename pats_exp... to use "rhs" naming * added test for guarded value/exception or-patterns * address ocamldoc CRs --------- Co-authored-by: Nick Roberts <[email protected]>
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Multiway match typechecking and translation for pattern guards (#2) * multiway typechecking and translation * update jane test output * self-review: format and style in translcore * more translcore/typedtree cleanup * expose value `is_guarded_rhs` * fix typedtree printer * make discussed changes to ocamldoc * format: remove unnecessary parens in pattern * improve parmatch variable naming * explain [exp_attributes] and [exp_extra] weirdness * improve translcore [event_function*] naming * inlined transl_body in transl_rhs * rename pats_exp... to use "rhs" naming * added test for guarded value/exception or-patterns * address ocamldoc CRs --------- Co-authored-by: Nick Roberts <[email protected]>
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Multiway match typechecking and translation for pattern guards (#2) * multiway typechecking and translation * update jane test output * self-review: format and style in translcore * more translcore/typedtree cleanup * expose value `is_guarded_rhs` * fix typedtree printer * make discussed changes to ocamldoc * format: remove unnecessary parens in pattern * improve parmatch variable naming * explain [exp_attributes] and [exp_extra] weirdness * improve translcore [event_function*] naming * inlined transl_body in transl_rhs * rename pats_exp... to use "rhs" naming * added test for guarded value/exception or-patterns * address ocamldoc CRs --------- Co-authored-by: Nick Roberts <[email protected]>
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Implements typechecking and translation for pattern guards.
The changes are mostly the straightforward generalization of the single case pattern guard construct.
The main complexity comes from changes related to the restructuring of
Typedtree.case, whose fieldc_rhsused to be of typeexpression, but is now of typecase_rhs, in conjunction with the way that multiway pattern guards change the notion of the rhs of a case.The changes in ocamldoc are type-directed, but it is not apparent that they exhibit the intended behavior. It is worth trying to figure out the intended behavior of the modified functions through review.