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