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Add intrinsics.type_is_variant_of

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gingerBill
2021-05-13 12:04:51 +01:00
parent d4ee1a9e19
commit b37d344eb2
3 changed files with 45 additions and 0 deletions
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src/check_builtin.cpp
+40
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@@ -2429,6 +2429,46 @@ bool check_builtin_procedure(CheckerContext *c, Operand *operand, Ast *call, i32
}
break;
case BuiltinProc_type_is_variant_of:
{
if (operand->mode != Addressing_Type) {
error(operand->expr, "Expected a type for '%.*s'", LIT(builtin_name));
operand->mode = Addressing_Invalid;
operand->type = t_invalid;
return false;
}
Type *u = operand->type;
if (!is_type_union(u)) {
error(operand->expr, "Expected a union type for '%.*s'", LIT(builtin_name));
operand->mode = Addressing_Invalid;
operand->type = t_invalid;
return false;
}
Type *v = check_type(c, ce->args[1]);
u = base_type(u);
GB_ASSERT(u->kind == Type_Union);
bool is_variant = false;
for_array(i, u->Union.variants) {
Type *vt = u->Union.variants[i];
if (are_types_identical(v, vt)) {
is_variant = true;
break;
}
}
operand->mode = Addressing_Constant;
operand->type = t_untyped_bool;
operand->value = exact_value_bool(is_variant);
}
break;
case BuiltinProc_type_struct_field_count:
operand->value = exact_value_i64(0);
if (operand->mode != Addressing_Type) {