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Add initial support for Objective-C class implementation

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This commit is contained in:
Harold Brenes
2025-04-19 08:04:23 -04:00
parent 2dedb199b8
commit a3de9c8de4
14 changed files with 895 additions and 47 deletions
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73
src/check_decl.cpp
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@@ -526,6 +526,54 @@ gb_internal void check_type_decl(CheckerContext *ctx, Entity *e, Ast *init_expr,
check_decl_attributes(ctx, decl->attributes, type_decl_attribute, &ac);
if (e->kind == Entity_TypeName && ac.objc_class != "") {
e->TypeName.objc_class_name = ac.objc_class;
e->TypeName.objc_superclass = ac.objc_superclass;
e->TypeName.objc_ivar = ac.objc_ivar;
if (ac.objc_is_implementation) {
e->TypeName.objc_is_implementation = true;
mpsc_enqueue(&ctx->info->objc_class_implementations, e); // TODO(harold): Don't need this for anything. Remove.
GB_ASSERT(e->TypeName.objc_ivar == nullptr || e->TypeName.objc_ivar->kind == Type_Named);
// Ensure superclass hierarchy are all Objective-C classes and does not cycle
Type *super = ac.objc_superclass;
if (super != nullptr) {
TypeSet super_set{};
type_set_init(&super_set, 8);
defer (type_set_destroy(&super_set));
type_set_update(&super_set, e->type);
for (;;) {
if (type_set_update(&super_set, super)) {
error(e->token, "@(objc_superclass) Superclass hierarchy cycle encountered");
break;
}
if (super->kind != Type_Named) {
error(e->token, "@(objc_superclass) References type must be a named struct.");
break;
}
Type* named_type = base_type(super->Named.type_name->type);
if (!is_type_objc_object(named_type)) {
error(e->token, "@(objc_superclass) Superclass must be an Objective-C class.");
break;
}
super = super->Named.type_name->TypeName.objc_superclass;
if (super == nullptr) {
break;
}
// TODO(harold): Is this the right way to do this??? The referenced entity must be already resolved
// so that we can access its objc_superclass attribute
check_single_global_entity(ctx->checker, super->Named.type_name, super->Named.type_name->decl_info);
}
}
} else if (e->TypeName.objc_superclass != nullptr) {
error(e->token, "@(objc_superclass) can only be applied when the obj_implement attribute is also applied");
}
if (type_size_of(e->type) > 0) {
error(e->token, "@(objc_class) marked type must be of zero size");
@@ -942,6 +990,31 @@ gb_internal void check_objc_methods(CheckerContext *ctx, Entity *e, AttributeCon
if (tn->scope != e->scope) {
error(e->token, "@(objc_name) attribute may only be applied to procedures and types within the same scope");
} else {
if (ac.objc_is_implementation) {
GB_ASSERT(e->kind == Entity_Procedure);
CheckerInfo *info = ctx->info;
mutex_lock(&info->objc_method_mutex);
defer (mutex_unlock(&info->objc_method_mutex));
auto method = ObjcMethodData{ ac, e };
if (ac.objc_selector == "") {
method.ac.objc_selector = ac.objc_name;
}
Array<ObjcMethodData>* method_list = map_get(&info->objc_method_implementations, t);
if (method_list) {
array_add(method_list, method);
} else {
auto list = array_make<ObjcMethodData>(permanent_allocator(), 1, 8);
list[0] = method;
map_set(&info->objc_method_implementations, t, list);
}
}
mutex_lock(&global_type_name_objc_metadata_mutex);
defer (mutex_unlock(&global_type_name_objc_metadata_mutex));