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Give compile-time error if registering a class without its own _bind_methods() function

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This commit is contained in:
David Snopek
2024-04-24 14:26:06 -05:00
parent e23b117ac3
commit ca46ef4d25
3 changed files with 16 additions and 0 deletions
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1
include/godot_cpp/core/class_db.hpp
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@@ -203,6 +203,7 @@ public:
template <typename T, bool is_abstract>
void ClassDB::_register_class(bool p_virtual, bool p_exposed, bool p_runtime) {
static_assert(TypesAreSame<typename T::self_type, T>::value, "Class not declared properly, please use GDCLASS.");
static_assert(!FunctionsAreSame<T::self_type::_bind_methods, T::parent_type::_bind_methods>::value, "Class must declare 'static void _bind_methods'.");
static_assert(!std::is_abstract_v<T> || is_abstract, "Class is abstract, please use GDREGISTER_ABSTRACT_CLASS.");
instance_binding_callbacks[T::get_class_static()] = &T::_gde_binding_callbacks;

10
include/godot_cpp/core/type_info.hpp
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@@ -58,6 +58,16 @@ struct TypesAreSame<A, A> {
static bool const value = true;
};
template <auto A, auto B>
struct FunctionsAreSame {
static bool const value = false;
};
template <auto A>
struct FunctionsAreSame<A, A> {
static bool const value = true;
};
template <typename B, typename D>
struct TypeInherits {
static D *get_d();