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Add intrinsics.type_is_subtype_of; intrinsics.objc_selector_name

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gingerBill
2022-02-08 22:59:37 +00:00
parent 05dd3d490d
commit c5d348515d
6 changed files with 101 additions and 43 deletions
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44
src/types.cpp
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@@ -3748,6 +3748,50 @@ i64 type_offset_of_from_selection(Type *type, Selection sel) {
return offset;
}
isize check_is_assignable_to_using_subtype(Type *src, Type *dst, isize level = 0, bool src_is_ptr = false) {
Type *prev_src = src;
src = type_deref(src);
if (!src_is_ptr) {
src_is_ptr = src != prev_src;
}
src = base_type(src);
if (!is_type_struct(src)) {
return 0;
}
for_array(i, src->Struct.fields) {
Entity *f = src->Struct.fields[i];
if (f->kind != Entity_Variable || (f->flags&EntityFlag_Using) == 0) {
continue;
}
if (are_types_identical(f->type, dst)) {
return level+1;
}
if (src_is_ptr && is_type_pointer(dst)) {
if (are_types_identical(f->type, type_deref(dst))) {
return level+1;
}
}
isize nested_level = check_is_assignable_to_using_subtype(f->type, dst, level+1, src_is_ptr);
if (nested_level > 0) {
return nested_level;
}
}
return 0;
}
bool is_type_subtype_of(Type *src, Type *dst) {
if (are_types_identical(src, dst)) {
return true;
}
return 0 < check_is_assignable_to_using_subtype(src, dst, 0, is_type_pointer(src));
}
Type *get_struct_field_type(Type *t, isize index) {
t = base_type(type_deref(t));