/**************************************************************************/ /* callable_method_pointer.hpp */ /**************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /**************************************************************************/ /* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */ /* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */ /* */ /* Permission is hereby granted, free of charge, to any person obtaining */ /* a copy of this software and associated documentation files (the */ /* "Software"), to deal in the Software without restriction, including */ /* without limitation the rights to use, copy, modify, merge, publish, */ /* distribute, sublicense, and/or sell copies of the Software, and to */ /* permit persons to whom the Software is furnished to do so, subject to */ /* the following conditions: */ /* */ /* The above copyright notice and this permission notice shall be */ /* included in all copies or substantial portions of the Software. */ /* */ /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */ /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /**************************************************************************/ #ifndef GODOT_CALLABLE_METHOD_POINTER_HPP #define GODOT_CALLABLE_METHOD_POINTER_HPP #include #include namespace godot { class CallableCustomMethodPointerBase : public CallableCustomBase { uint32_t *comp_ptr = nullptr; uint32_t comp_size; uint32_t h; protected: void _setup(uint32_t *p_base_ptr, uint32_t p_ptr_size); public: _FORCE_INLINE_ const uint32_t *get_comp_ptr() const { return comp_ptr; } _FORCE_INLINE_ uint32_t get_comp_size() const { return comp_size; } _FORCE_INLINE_ uint32_t get_hash() const { return h; } }; namespace internal { Callable create_callable_from_ccmp(CallableCustomMethodPointerBase *p_callable_method_pointer); } // namespace internal // // No return value. // template class CallableCustomMethodPointer : public CallableCustomMethodPointerBase { struct Data { T *instance; void (T::*method)(P...); } data; static_assert(sizeof(Data) % 4 == 0); public: virtual ObjectID get_object() const override { return ObjectID(data.instance->get_instance_id()); } virtual void call(const Variant **p_arguments, int p_argcount, Variant &r_return_value, GDExtensionCallError &r_call_error) const override { call_with_variant_args(data.instance, data.method, p_arguments, p_argcount, r_call_error); } CallableCustomMethodPointer(T *p_instance, void (T::*p_method)(P...)) { memset(&data, 0, sizeof(Data)); data.instance = p_instance; data.method = p_method; _setup((uint32_t *)&data, sizeof(Data)); } }; template Callable create_custom_callable_function_pointer(T *p_instance, void (T::*p_method)(P...)) { typedef CallableCustomMethodPointer CCMP; CCMP *ccmp = memnew(CCMP(p_instance, p_method)); return ::godot::internal::create_callable_from_ccmp(ccmp); } // // With return value. // template class CallableCustomMethodPointerRet : public CallableCustomMethodPointerBase { struct Data { T *instance; R(T::*method) (P...); } data; static_assert(sizeof(Data) % 4 == 0); public: virtual ObjectID get_object() const override { return ObjectID(data.instance->get_instance_id()); } virtual void call(const Variant **p_arguments, int p_argcount, Variant &r_return_value, GDExtensionCallError &r_call_error) const override { call_with_variant_args_ret(data.instance, data.method, p_arguments, p_argcount, r_return_value, r_call_error); } CallableCustomMethodPointerRet(T *p_instance, R (T::*p_method)(P...)) { memset(&data, 0, sizeof(Data)); data.instance = p_instance; data.method = p_method; _setup((uint32_t *)&data, sizeof(Data)); } }; template Callable create_custom_callable_function_pointer(T *p_instance, R (T::*p_method)(P...)) { typedef CallableCustomMethodPointerRet CCMP; // Messes with memnew otherwise. CCMP *ccmp = memnew(CCMP(p_instance, p_method)); return ::godot::internal::create_callable_from_ccmp(ccmp); } // // Const with return value. // template class CallableCustomMethodPointerRetC : public CallableCustomMethodPointerBase { struct Data { T *instance; R(T::*method) (P...) const; } data; static_assert(sizeof(Data) % 4 == 0); public: virtual ObjectID get_object() const override { return ObjectID(data.instance->get_instance_id()); } virtual void call(const Variant **p_arguments, int p_argcount, Variant &r_return_value, GDExtensionCallError &r_call_error) const override { call_with_variant_args_retc(data.instance, data.method, p_arguments, p_argcount, r_return_value, r_call_error); } CallableCustomMethodPointerRetC(const T *p_instance, R (T::*p_method)(P...) const) { memset(&data, 0, sizeof(Data)); data.instance = const_cast(p_instance); data.method = p_method; _setup((uint32_t *)&data, sizeof(Data)); } }; template Callable create_custom_callable_function_pointer(const T *p_instance, R (T::*p_method)(P...) const) { typedef CallableCustomMethodPointerRetC CCMP; // Messes with memnew otherwise. CCMP *ccmp = memnew(CCMP(p_instance, p_method)); return ::godot::internal::create_callable_from_ccmp(ccmp); } // // Static method with no return value. // template class CallableCustomStaticMethodPointer : public CallableCustomMethodPointerBase { struct Data { void (*method)(P...); } data; static_assert(sizeof(Data) % 4 == 0); public: virtual ObjectID get_object() const override { return ObjectID(); } virtual void call(const Variant **p_arguments, int p_argcount, Variant &r_return_value, GDExtensionCallError &r_call_error) const override { call_with_variant_args_static_ret(data.method, p_arguments, p_argcount, r_return_value, r_call_error); r_return_value = Variant(); } CallableCustomStaticMethodPointer(void (*p_method)(P...)) { memset(&data, 0, sizeof(Data)); data.method = p_method; _setup((uint32_t *)&data, sizeof(Data)); } }; template Callable create_custom_callable_static_function_pointer(void (*p_method)(P...)) { typedef CallableCustomStaticMethodPointer CCMP; CCMP *ccmp = memnew(CCMP(p_method)); return ::godot::internal::create_callable_from_ccmp(ccmp); } // // Static method with return value. // template class CallableCustomStaticMethodPointerRet : public CallableCustomMethodPointerBase { struct Data { R(*method) (P...); } data; static_assert(sizeof(Data) % 4 == 0); public: virtual ObjectID get_object() const override { return ObjectID(); } virtual void call(const Variant **p_arguments, int p_argcount, Variant &r_return_value, GDExtensionCallError &r_call_error) const override { call_with_variant_args_static_ret(data.method, p_arguments, p_argcount, r_return_value, r_call_error); } CallableCustomStaticMethodPointerRet(R (*p_method)(P...)) { memset(&data, 0, sizeof(Data)); data.method = p_method; _setup((uint32_t *)&data, sizeof(Data)); } }; template Callable create_custom_callable_static_function_pointer(R (*p_method)(P...)) { typedef CallableCustomStaticMethodPointerRet CCMP; CCMP *ccmp = memnew(CCMP(p_method)); return ::godot::internal::create_callable_from_ccmp(ccmp); } // // The API: // #define callable_mp(I, M) ::godot::create_custom_callable_function_pointer(I, M) #define callable_mp_static(M) ::godot::create_custom_callable_static_function_pointer(M) } // namespace godot #endif // GODOT_CALLABLE_METHOD_POINTER_HPP