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Implement callable_mp() and callable_mp_static()

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This commit is contained in:
David Snopek
2023-06-28 21:55:04 -05:00
parent 4314f91b7d
commit c18c1916c3
10 changed files with 545 additions and 0 deletions
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90
include/godot_cpp/core/binder_common.hpp
View File

@@ -276,6 +276,60 @@ void call_with_variant_args_retc_helper(T *p_instance, R (T::*p_method)(P...) co
(void)p_args;
}
template <class T, class... P>
void call_with_variant_args(T *p_instance, void (T::*p_method)(P...), const Variant **p_args, int p_argcount, GDExtensionCallError &r_error) {
#ifdef DEBUG_ENABLED
if ((size_t)p_argcount > sizeof...(P)) {
r_error.error = GDEXTENSION_CALL_ERROR_TOO_MANY_ARGUMENTS;
r_error.argument = (int32_t)sizeof...(P);
return;
}
if ((size_t)p_argcount < sizeof...(P)) {
r_error.error = GDEXTENSION_CALL_ERROR_TOO_FEW_ARGUMENTS;
r_error.argument = (int32_t)sizeof...(P);
return;
}
#endif
call_with_variant_args_helper<T, P...>(p_instance, p_method, p_args, r_error, BuildIndexSequence<sizeof...(P)>{});
}
template <class T, class R, class... P>
void call_with_variant_args_ret(T *p_instance, R (T::*p_method)(P...), const Variant **p_args, int p_argcount, Variant &r_ret, GDExtensionCallError &r_error) {
#ifdef DEBUG_ENABLED
if ((size_t)p_argcount > sizeof...(P)) {
r_error.error = GDEXTENSION_CALL_ERROR_TOO_MANY_ARGUMENTS;
r_error.argument = (int32_t)sizeof...(P);
return;
}
if ((size_t)p_argcount < sizeof...(P)) {
r_error.error = GDEXTENSION_CALL_ERROR_TOO_FEW_ARGUMENTS;
r_error.argument = (int32_t)sizeof...(P);
return;
}
#endif
call_with_variant_args_ret_helper<T, R, P...>(p_instance, p_method, p_args, r_ret, r_error, BuildIndexSequence<sizeof...(P)>{});
}
template <class T, class R, class... P>
void call_with_variant_args_retc(T *p_instance, R (T::*p_method)(P...) const, const Variant **p_args, int p_argcount, Variant &r_ret, GDExtensionCallError &r_error) {
#ifdef DEBUG_ENABLED
if ((size_t)p_argcount > sizeof...(P)) {
r_error.error = GDEXTENSION_CALL_ERROR_TOO_MANY_ARGUMENTS;
r_error.argument = (int32_t)sizeof...(P);
return;
}
if ((size_t)p_argcount < sizeof...(P)) {
r_error.error = GDEXTENSION_CALL_ERROR_TOO_FEW_ARGUMENTS;
r_error.argument = (int32_t)sizeof...(P);
return;
}
#endif
call_with_variant_args_retc_helper<T, R, P...>(p_instance, p_method, p_args, r_ret, r_error, BuildIndexSequence<sizeof...(P)>{});
}
template <class T, class... P>
void call_with_variant_args_dv(T *p_instance, void (T::*p_method)(P...), const GDExtensionConstVariantPtr *p_args, int p_argcount, GDExtensionCallError &r_error, const std::vector<Variant> &default_values) {
#ifdef DEBUG_ENABLED
@@ -538,6 +592,42 @@ void call_with_ptr_args_static_method(void (*p_method)(P...), const GDExtensionC
call_with_ptr_args_static_method_helper<P...>(p_method, p_args, BuildIndexSequence<sizeof...(P)>{});
}
template <class R, class... P>
void call_with_variant_args_static_ret(R (*p_method)(P...), const Variant **p_args, int p_argcount, Variant &r_ret, GDExtensionCallError &r_error) {
#ifdef DEBUG_ENABLED
if ((size_t)p_argcount > sizeof...(P)) {
r_error.error = GDEXTENSION_CALL_ERROR_TOO_MANY_ARGUMENTS;
r_error.argument = (int32_t)sizeof...(P);
return;
}
if ((size_t)p_argcount < sizeof...(P)) {
r_error.error = GDEXTENSION_CALL_ERROR_TOO_FEW_ARGUMENTS;
r_error.argument = (int32_t)sizeof...(P);
return;
}
#endif
call_with_variant_args_static_ret<R, P...>(p_method, p_args, r_ret, r_error, BuildIndexSequence<sizeof...(P)>{});
}
template <class... P>
void call_with_variant_args_static_ret(void (*p_method)(P...), const Variant **p_args, int p_argcount, Variant &r_ret, GDExtensionCallError &r_error) {
#ifdef DEBUG_ENABLED
if ((size_t)p_argcount > sizeof...(P)) {
r_error.error = GDEXTENSION_CALL_ERROR_TOO_MANY_ARGUMENTS;
r_error.argument = (int32_t)sizeof...(P);
return;
}
if ((size_t)p_argcount < sizeof...(P)) {
r_error.error = GDEXTENSION_CALL_ERROR_TOO_FEW_ARGUMENTS;
r_error.argument = (int32_t)sizeof...(P);
return;
}
#endif
call_with_variant_args_static<P...>(p_method, p_args, r_error, BuildIndexSequence<sizeof...(P)>{});
}
template <class R, class... P, size_t... Is>
void call_with_variant_args_static_ret(R (*p_method)(P...), const Variant **p_args, Variant &r_ret, GDExtensionCallError &r_error, IndexSequence<Is...>) {
r_error.error = GDEXTENSION_CALL_OK;

4
include/godot_cpp/core/class_db.hpp
View File

@@ -40,6 +40,10 @@
#include <godot_cpp/classes/class_db_singleton.hpp>
// Makes callable_mp readily available in all classes connecting signals.
// Needs to come after method_bind and object have been included.
#include <godot_cpp/variant/callable_method_pointer.hpp>
#include <list>
#include <set>
#include <string>

1
include/godot_cpp/godot.hpp
View File

@@ -164,6 +164,7 @@ extern "C" GDExtensionInterfaceObjectGetClassName gdextension_interface_object_g
extern "C" GDExtensionInterfaceObjectCastTo gdextension_interface_object_cast_to;
extern "C" GDExtensionInterfaceObjectGetInstanceFromId gdextension_interface_object_get_instance_from_id;
extern "C" GDExtensionInterfaceObjectGetInstanceId gdextension_interface_object_get_instance_id;
extern "C" GDExtensionInterfaceCallableCustomCreate gdextension_interface_callable_custom_create;
extern "C" GDExtensionInterfaceRefGetObject gdextension_interface_ref_get_object;
extern "C" GDExtensionInterfaceRefSetObject gdextension_interface_ref_set_object;
extern "C" GDExtensionInterfaceScriptInstanceCreate2 gdextension_interface_script_instance_create2;

215
include/godot_cpp/variant/callable_method_pointer.hpp Normal file
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@@ -0,0 +1,215 @@
/**************************************************************************/
/* 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 <godot_cpp/core/binder_common.hpp>
#include <godot_cpp/variant/variant.hpp>
namespace godot {
class CallableCustomMethodPointerBase {
public:
virtual Object *get_object() const = 0;
virtual void call(const Variant **p_arguments, int p_argcount, Variant &r_return_value, GDExtensionCallError &r_call_error) const = 0;
};
namespace internal {
Callable create_custom_callable(CallableCustomMethodPointerBase *p_callable_method_pointer);
} // namespace internal
//
// No return value.
//
template <class T, class... P>
class CallableCustomMethodPointer : public CallableCustomMethodPointerBase {
T *instance;
void (T::*method)(P...);
public:
virtual Object *get_object() const override {
return instance;
}
virtual void call(const Variant **p_arguments, int p_argcount, Variant &r_return_value, GDExtensionCallError &r_call_error) const override {
call_with_variant_args(instance, method, p_arguments, p_argcount, r_call_error);
}
CallableCustomMethodPointer(T *p_instance, void (T::*p_method)(P...)) {
instance = p_instance;
method = p_method;
}
};
template <class T, class... P>
Callable create_custom_callable_function_pointer(T *p_instance, void (T::*p_method)(P...)) {
typedef CallableCustomMethodPointer<T, P...> CCMP;
CCMP *ccmp = memnew(CCMP(p_instance, p_method));
return ::godot::internal::create_custom_callable(ccmp);
}
//
// With return value.
//
template <class T, class R, class... P>
class CallableCustomMethodPointerRet : public CallableCustomMethodPointerBase {
T *instance;
R(T::*method)
(P...);
public:
virtual Object *get_object() const override {
return instance;
}
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(instance, method, p_arguments, p_argcount, r_return_value, r_call_error);
}
CallableCustomMethodPointerRet(T *p_instance, R (T::*p_method)(P...)) {
instance = p_instance;
method = p_method;
}
};
template <class T, class R, class... P>
Callable create_custom_callable_function_pointer(T *p_instance, R (T::*p_method)(P...)) {
typedef CallableCustomMethodPointerRet<T, R, P...> CCMP; // Messes with memnew otherwise.
CCMP *ccmp = memnew(CCMP(p_instance, p_method));
return ::godot::internal::create_custom_callable(ccmp);
}
//
// Const with return value.
//
template <class T, class R, class... P>
class CallableCustomMethodPointerRetC : public CallableCustomMethodPointerBase {
T *instance;
R(T::*method)
(P...) const;
public:
virtual Object *get_object() const override {
return instance;
}
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(instance, method, p_arguments, p_argcount, r_return_value, r_call_error);
}
CallableCustomMethodPointerRetC(const T *p_instance, R (T::*p_method)(P...) const) {
instance = const_cast<T *>(p_instance);
method = p_method;
}
};
template <class T, class R, class... P>
Callable create_custom_callable_function_pointer(const T *p_instance, R (T::*p_method)(P...) const) {
typedef CallableCustomMethodPointerRetC<T, R, P...> CCMP; // Messes with memnew otherwise.
CCMP *ccmp = memnew(CCMP(p_instance, p_method));
return ::godot::internal::create_custom_callable(ccmp);
}
//
// Static method with no return value.
//
template <class... P>
class CallableCustomStaticMethodPointer : public CallableCustomMethodPointerBase {
void (*method)(P...);
public:
virtual Object *get_object() const override {
return nullptr;
}
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(method, p_arguments, p_argcount, r_return_value, r_call_error);
r_return_value = Variant();
}
CallableCustomStaticMethodPointer(void (*p_method)(P...)) {
method = p_method;
}
};
template <class... P>
Callable create_custom_callable_static_function_pointer(void (*p_method)(P...)) {
typedef CallableCustomStaticMethodPointer<P...> CCMP;
CCMP *ccmp = memnew(CCMP(p_method));
return ::godot::internal::create_custom_callable(ccmp);
}
//
// Static method with return value.
//
template <class R, class... P>
class CallableCustomStaticMethodPointerRet : public CallableCustomMethodPointerBase {
R(*method)
(P...);
public:
virtual Object *get_object() const override {
return nullptr;
}
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(method, p_arguments, p_argcount, r_return_value, r_call_error);
}
CallableCustomStaticMethodPointerRet(R (*p_method)(P...)) {
method = p_method;
}
};
template <class R, class... P>
Callable create_custom_callable_static_function_pointer(R (*p_method)(P...)) {
typedef CallableCustomStaticMethodPointerRet<R, P...> CCMP;
CCMP *ccmp = memnew(CCMP(p_method));
return ::godot::internal::create_custom_callable(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