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Begin to support constant array of unions

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This commit is contained in:
gingerBill
2025-09-28 20:20:26 +01:00
parent a974c51d57
commit ffdfbfe2c2
7 changed files with 71 additions and 34 deletions
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28
src/check_expr.cpp
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@@ -3505,24 +3505,6 @@ gb_internal bool check_is_castable_to(CheckerContext *c, Operand *operand, Type
return false;
}
gb_internal bool is_type_union_constantable(Type *type) {
Type *bt = base_type(type);
GB_ASSERT(bt->kind == Type_Union);
if (bt->Union.variants.count == 0) {
return true;
} else if (bt->Union.variants.count == 1) {
return is_type_constant_type(bt->Union.variants[0]);
}
for (Type *v : bt->Union.variants) {
if (!is_type_constant_type(v)) {
return false;
}
}
return true;
}
gb_internal bool check_cast_internal(CheckerContext *c, Operand *x, Type *type) {
bool is_const_expr = x->mode == Addressing_Constant;
@@ -4880,7 +4862,10 @@ gb_internal void convert_to_typed(CheckerContext *c, Operand *operand, Type *tar
break;
}
operand->type = new_type;
operand->mode = Addressing_Value;
if (operand->mode != Addressing_Constant ||
!elem_type_can_be_constant(operand->type)) {
operand->mode = Addressing_Value;
}
break;
} else if (valid_count > 1) {
ERROR_BLOCK();
@@ -9895,7 +9880,10 @@ gb_internal ExprKind check_compound_literal(CheckerContext *c, Operand *o, Ast *
Operand o = {};
check_expr_or_type(c, &o, elem, field->type);
if (is_type_any(field->type) || is_type_union(field->type) || is_type_raw_union(field->type) || is_type_typeid(field->type)) {
if (is_type_any(field->type) ||
is_type_raw_union(field->type) ||
(is_type_union(field->type) && !is_type_union_constantable(field->type)) ||
is_type_typeid(field->type)) {
is_constant = false;
}
if (is_constant) {