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fixed / removed out-of-date comments, tidied check_and_promote_args() interface

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Vern Paxson 2021-05-30 17:25:40 -07:00
parent efd03d41f8
commit a16a25efbd
4 changed files with 15 additions and 21 deletions
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24
src/Expr.h
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@ -1645,25 +1645,21 @@ ExprPtr get_assign_expr(
ExprPtr op1,
ExprPtr op2, bool is_init);
// Type-check the given expression(s) against the given type(s). Complain
// if the expression cannot match the given type, returning 0. If it can
// match, promote it as necessary (modifying the ref parameter accordingly)
// and return 1.
//
// The second, third, and fourth forms are for promoting a list of
// expressions (which is updated in place) to either match a list of
// types or a single type.
//
// Note, the type is not "const" because it can be ref'd.
/**
* Returns nullptr if the expression cannot match or a promoted
* expression.
* Type-check the given expression(s) against the given type(s). Complain
* if the expression cannot match the given type, returning nullptr;
* otherwise, returns an expression reflecting the promotion.
*
* The second, third, and fourth forms are for promoting a list of
* expressions (which is updated in place) to either match a list of
* types or a single type.
*
* Note, the type is not "const" because it can be ref'd.
*/
extern ExprPtr check_and_promote_expr(Expr* e, Type* t);
extern bool check_and_promote_exprs(ListExpr* elements, TypeList* types);
extern bool check_and_promote_args(ListExpr* args, RecordType* types);
extern bool check_and_promote_args(ListExpr* args, const RecordType* types);
extern bool check_and_promote_exprs_to_type(ListExpr* elements, Type* type);
// Returns a ListExpr simplified down to a list a values, or nil