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change vector constructors to require direct type equivalence for non-arithmetics

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Vern Paxson 2022-11-21 15:32:46 -08:00
parent c1e5389929
commit 47152e38c4
5 changed files with 63 additions and 12 deletions
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13
src/Type.h
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@ -923,15 +923,10 @@ extern Type* flatten_type(Type* t);
// Returns the "maximum" of two type tags, in a type-promotion sense.
extern TypeTag max_type(TypeTag t1, TypeTag t2);
// Given two types, returns the "merge", in which promotable types
// are promoted to the maximum of the two. Returns nil (and generates
// an error message) if the types are incompatible.
TypePtr merge_types(const TypePtr& t1, const TypePtr& t2);
// Given a list of expressions, returns a (ref'd) type reflecting
// a merged type consistent across all of them, or nil if this
// cannot be done.
TypePtr merge_type_list(detail::ListExpr* elements);
// Given a list of expressions, returns the maximal type consistent across
// all of them, or nil if this cannot be done. "Maximal" incorporates
// notions of arithmetic coercion, but otherwise requires type-equivalence.
TypePtr maximal_type(detail::ListExpr* elements);
// Given an expression, infer its type when used for an initialization.
TypePtr init_type(const detail::ExprPtr& init);