diff options
Diffstat (limited to 'src/check_expr.cpp')
| -rw-r--r-- | src/check_expr.cpp | 38 |
1 files changed, 29 insertions, 9 deletions
diff --git a/src/check_expr.cpp b/src/check_expr.cpp index 10b37bbf3..7ccca1b57 100644 --- a/src/check_expr.cpp +++ b/src/check_expr.cpp @@ -643,7 +643,7 @@ gb_internal bool find_or_generate_polymorphic_procedure(CheckerContext *old_c, E gb_internal bool check_polymorphic_procedure_assignment(CheckerContext *c, Operand *operand, Type *type, Ast *poly_def_node, PolyProcData *poly_proc_data) { if (operand->expr == nullptr) return false; - Entity *base_entity = entity_of_node(operand->expr); + Entity *base_entity = entity_from_expr(operand->expr); if (base_entity == nullptr) return false; return find_or_generate_polymorphic_procedure(c, base_entity, type, nullptr, poly_def_node, poly_proc_data); } @@ -995,14 +995,34 @@ gb_internal i64 assign_score_function(i64 distance, bool is_variadic=false) { gb_internal bool check_is_assignable_to_with_score(CheckerContext *c, Operand *operand, Type *type, i64 *score_, bool is_variadic=false, bool allow_array_programming=true) { - i64 score = 0; - i64 distance = check_distance_between_types(c, operand, type, allow_array_programming); - bool ok = distance >= 0; - if (ok) { - score = assign_score_function(distance, is_variadic); + if (c == nullptr) { + GB_ASSERT(operand->mode == Addressing_Value); + GB_ASSERT(is_type_typed(operand->type)); + } + if (operand->mode == Addressing_Invalid || type == t_invalid) { + if (score_) *score_ = 0; + return false; + } + + // Handle polymorphic procedure used as default parameter + if (operand->mode == Addressing_Value && is_type_proc(type) && is_type_proc(operand->type)) { + Entity *e = entity_from_expr(operand->expr); + if (e != nullptr && e->kind == Entity_Procedure && is_type_polymorphic(e->type) && !is_type_polymorphic(type)) { + // Special case: Allow a polymorphic procedure to be used as default value for concrete proc type + // during the initial check. It will be properly instantiated when actually used. + if (score_) *score_ = assign_score_function(1); + return true; + } + } + + i64 score = check_distance_between_types(c, operand, type, allow_array_programming); + if (score >= 0) { + if (score_) *score_ = assign_score_function(score, is_variadic); + return true; } - if (score_) *score_ = score; - return ok; + + if (score_) *score_ = 0; + return false; } @@ -10996,7 +11016,7 @@ gb_internal ExprKind check_expr_base_internal(CheckerContext *c, Operand *o, Ast return kind; case_end; - case_ast_node(i, Implicit, node) + case_ast_node(i, Implicit, node); switch (i->kind) { case Token_context: { |