virtualx-engine/core/object/method_bind.h
reduz dd8c0522a6 Implement varargs in Methodinfo
Variadic templates are an awful thing. Implements  using them in MethodInfo so less changes are required.
2022-06-23 14:50:38 +02:00

736 lines
23 KiB
C++

/*************************************************************************/
/* method_bind.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* 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 METHOD_BIND_H
#define METHOD_BIND_H
#include "core/variant/binder_common.h"
VARIANT_ENUM_CAST(MethodFlags)
// some helpers
class MethodBind {
int method_id;
uint32_t hint_flags = METHOD_FLAGS_DEFAULT;
StringName name;
StringName instance_class;
Vector<Variant> default_arguments;
int default_argument_count = 0;
int argument_count = 0;
bool _static = false;
bool _const = false;
bool _returns = false;
protected:
Variant::Type *argument_types = nullptr;
#ifdef DEBUG_METHODS_ENABLED
Vector<StringName> arg_names;
#endif
void _set_const(bool p_const);
void _set_static(bool p_static);
void _set_returns(bool p_returns);
virtual Variant::Type _gen_argument_type(int p_arg) const = 0;
virtual PropertyInfo _gen_argument_type_info(int p_arg) const = 0;
void _generate_argument_types(int p_count);
void set_argument_count(int p_count) { argument_count = p_count; }
public:
_FORCE_INLINE_ const Vector<Variant> &get_default_arguments() const { return default_arguments; }
_FORCE_INLINE_ int get_default_argument_count() const { return default_argument_count; }
_FORCE_INLINE_ Variant has_default_argument(int p_arg) const {
int idx = p_arg - (argument_count - default_arguments.size());
if (idx < 0 || idx >= default_arguments.size()) {
return false;
} else {
return true;
}
}
_FORCE_INLINE_ Variant get_default_argument(int p_arg) const {
int idx = p_arg - (argument_count - default_arguments.size());
if (idx < 0 || idx >= default_arguments.size()) {
return Variant();
} else {
return default_arguments[idx];
}
}
_FORCE_INLINE_ Variant::Type get_argument_type(int p_argument) const {
ERR_FAIL_COND_V(p_argument < -1 || p_argument > argument_count, Variant::NIL);
return argument_types[p_argument + 1];
}
PropertyInfo get_argument_info(int p_argument) const;
PropertyInfo get_return_info() const;
#ifdef DEBUG_METHODS_ENABLED
void set_argument_names(const Vector<StringName> &p_names); // Set by ClassDB, can't be inferred otherwise.
Vector<StringName> get_argument_names() const;
virtual GodotTypeInfo::Metadata get_argument_meta(int p_arg) const = 0;
#endif
void set_hint_flags(uint32_t p_hint) { hint_flags = p_hint; }
uint32_t get_hint_flags() const { return hint_flags | (is_const() ? METHOD_FLAG_CONST : 0) | (is_vararg() ? METHOD_FLAG_VARARG : 0) | (is_static() ? METHOD_FLAG_STATIC : 0); }
_FORCE_INLINE_ StringName get_instance_class() const { return instance_class; }
_FORCE_INLINE_ void set_instance_class(const StringName &p_class) { instance_class = p_class; }
_FORCE_INLINE_ int get_argument_count() const { return argument_count; };
virtual Variant call(Object *p_object, const Variant **p_args, int p_arg_count, Callable::CallError &r_error) = 0;
virtual void ptrcall(Object *p_object, const void **p_args, void *r_ret) = 0;
StringName get_name() const;
void set_name(const StringName &p_name);
_FORCE_INLINE_ int get_method_id() const { return method_id; }
_FORCE_INLINE_ bool is_const() const { return _const; }
_FORCE_INLINE_ bool is_static() const { return _static; }
_FORCE_INLINE_ bool has_return() const { return _returns; }
virtual bool is_vararg() const { return false; }
void set_default_arguments(const Vector<Variant> &p_defargs);
uint32_t get_hash() const;
MethodBind();
virtual ~MethodBind();
};
// MethodBindVarArg base CRTP
template <class Derived, class T, class R, bool should_returns>
class MethodBindVarArgBase : public MethodBind {
protected:
R(T::*method)
(const Variant **, int, Callable::CallError &);
MethodInfo method_info;
public:
virtual PropertyInfo _gen_argument_type_info(int p_arg) const override {
if (p_arg < 0) {
return _gen_return_type_info();
} else if (p_arg < method_info.arguments.size()) {
return method_info.arguments[p_arg];
} else {
return PropertyInfo(Variant::NIL, "arg_" + itos(p_arg), PROPERTY_HINT_NONE, String(), PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_NIL_IS_VARIANT);
}
}
virtual Variant::Type _gen_argument_type(int p_arg) const override {
return _gen_argument_type_info(p_arg).type;
}
#ifdef DEBUG_METHODS_ENABLED
virtual GodotTypeInfo::Metadata get_argument_meta(int) const override {
return GodotTypeInfo::METADATA_NONE;
}
#endif
virtual void ptrcall(Object *p_object, const void **p_args, void *r_ret) override {
ERR_FAIL(); // Can't call.
}
virtual bool is_const() const { return false; }
virtual bool is_vararg() const override { return true; }
MethodBindVarArgBase(
R (T::*p_method)(const Variant **, int, Callable::CallError &),
const MethodInfo &p_method_info,
bool p_return_nil_is_variant) :
method(p_method), method_info(p_method_info) {
set_argument_count(method_info.arguments.size());
Variant::Type *at = memnew_arr(Variant::Type, method_info.arguments.size() + 1);
at[0] = _gen_return_type_info().type;
if (method_info.arguments.size()) {
#ifdef DEBUG_METHODS_ENABLED
Vector<StringName> names;
names.resize(method_info.arguments.size());
#endif
for (int i = 0; i < method_info.arguments.size(); i++) {
at[i + 1] = method_info.arguments[i].type;
#ifdef DEBUG_METHODS_ENABLED
names.write[i] = method_info.arguments[i].name;
#endif
}
#ifdef DEBUG_METHODS_ENABLED
set_argument_names(names);
#endif
}
argument_types = at;
if (p_return_nil_is_variant) {
method_info.return_val.usage |= PROPERTY_USAGE_NIL_IS_VARIANT;
}
_set_returns(should_returns);
}
private:
PropertyInfo _gen_return_type_info() const {
return Derived::_gen_return_type_info_impl();
}
};
// variadic, no return
template <class T>
class MethodBindVarArgT : public MethodBindVarArgBase<MethodBindVarArgT<T>, T, void, false> {
friend class MethodBindVarArgBase<MethodBindVarArgT<T>, T, void, false>;
public:
virtual Variant call(Object *p_object, const Variant **p_args, int p_arg_count, Callable::CallError &r_error) override {
(static_cast<T *>(p_object)->*MethodBindVarArgBase<MethodBindVarArgT<T>, T, void, false>::method)(p_args, p_arg_count, r_error);
return {};
}
MethodBindVarArgT(
void (T::*p_method)(const Variant **, int, Callable::CallError &),
const MethodInfo &p_method_info,
bool p_return_nil_is_variant) :
MethodBindVarArgBase<MethodBindVarArgT<T>, T, void, false>(p_method, p_method_info, p_return_nil_is_variant) {
}
private:
static PropertyInfo _gen_return_type_info_impl() {
return {};
}
};
template <class T>
MethodBind *create_vararg_method_bind(void (T::*p_method)(const Variant **, int, Callable::CallError &), const MethodInfo &p_info, bool p_return_nil_is_variant) {
MethodBind *a = memnew((MethodBindVarArgT<T>)(p_method, p_info, p_return_nil_is_variant));
a->set_instance_class(T::get_class_static());
return a;
}
// variadic, return
template <class T, class R>
class MethodBindVarArgTR : public MethodBindVarArgBase<MethodBindVarArgTR<T, R>, T, R, true> {
friend class MethodBindVarArgBase<MethodBindVarArgTR<T, R>, T, R, true>;
public:
virtual Variant call(Object *p_object, const Variant **p_args, int p_arg_count, Callable::CallError &r_error) override {
return (static_cast<T *>(p_object)->*MethodBindVarArgBase<MethodBindVarArgTR<T, R>, T, R, true>::method)(p_args, p_arg_count, r_error);
}
MethodBindVarArgTR(
R (T::*p_method)(const Variant **, int, Callable::CallError &),
const MethodInfo &p_info,
bool p_return_nil_is_variant) :
MethodBindVarArgBase<MethodBindVarArgTR<T, R>, T, R, true>(p_method, p_info, p_return_nil_is_variant) {
}
private:
static PropertyInfo _gen_return_type_info_impl() {
return GetTypeInfo<R>::get_class_info();
}
};
template <class T, class R>
MethodBind *create_vararg_method_bind(R (T::*p_method)(const Variant **, int, Callable::CallError &), const MethodInfo &p_info, bool p_return_nil_is_variant) {
MethodBind *a = memnew((MethodBindVarArgTR<T, R>)(p_method, p_info, p_return_nil_is_variant));
a->set_instance_class(T::get_class_static());
return a;
}
/**** VARIADIC TEMPLATES ****/
#ifndef TYPED_METHOD_BIND
class __UnexistingClass;
#define MB_T __UnexistingClass
#else
#define MB_T T
#endif
// no return, not const
#ifdef TYPED_METHOD_BIND
template <class T, class... P>
#else
template <class... P>
#endif
class MethodBindT : public MethodBind {
void (MB_T::*method)(P...);
protected:
// GCC raises warnings in the case P = {} as the comparison is always false...
#if defined(__GNUC__) && !defined(__clang__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wlogical-op"
#endif
virtual Variant::Type _gen_argument_type(int p_arg) const override {
if (p_arg >= 0 && p_arg < (int)sizeof...(P)) {
return call_get_argument_type<P...>(p_arg);
} else {
return Variant::NIL;
}
}
#if defined(__GNUC__) && !defined(__clang__)
#pragma GCC diagnostic pop
#endif
virtual PropertyInfo _gen_argument_type_info(int p_arg) const override {
PropertyInfo pi;
call_get_argument_type_info<P...>(p_arg, pi);
return pi;
}
public:
#ifdef DEBUG_METHODS_ENABLED
virtual GodotTypeInfo::Metadata get_argument_meta(int p_arg) const override {
return call_get_argument_metadata<P...>(p_arg);
}
#endif
virtual Variant call(Object *p_object, const Variant **p_args, int p_arg_count, Callable::CallError &r_error) override {
#ifdef TYPED_METHOD_BIND
call_with_variant_args_dv(static_cast<T *>(p_object), method, p_args, p_arg_count, r_error, get_default_arguments());
#else
call_with_variant_args_dv(reinterpret_cast<MB_T *>(p_object), method, p_args, p_arg_count, r_error, get_default_arguments());
#endif
return Variant();
}
virtual void ptrcall(Object *p_object, const void **p_args, void *r_ret) override {
#ifdef TYPED_METHOD_BIND
call_with_ptr_args<T, P...>(static_cast<T *>(p_object), method, p_args);
#else
call_with_ptr_args<MB_T, P...>(reinterpret_cast<MB_T *>(p_object), method, p_args);
#endif
}
MethodBindT(void (MB_T::*p_method)(P...)) {
method = p_method;
_generate_argument_types(sizeof...(P));
set_argument_count(sizeof...(P));
}
};
template <class T, class... P>
MethodBind *create_method_bind(void (T::*p_method)(P...)) {
#ifdef TYPED_METHOD_BIND
MethodBind *a = memnew((MethodBindT<T, P...>)(p_method));
#else
MethodBind *a = memnew((MethodBindT<P...>)(reinterpret_cast<void (MB_T::*)(P...)>(p_method)));
#endif
a->set_instance_class(T::get_class_static());
return a;
}
// no return, const
#ifdef TYPED_METHOD_BIND
template <class T, class... P>
#else
template <class... P>
#endif
class MethodBindTC : public MethodBind {
void (MB_T::*method)(P...) const;
protected:
// GCC raises warnings in the case P = {} as the comparison is always false...
#if defined(__GNUC__) && !defined(__clang__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wlogical-op"
#endif
virtual Variant::Type _gen_argument_type(int p_arg) const override {
if (p_arg >= 0 && p_arg < (int)sizeof...(P)) {
return call_get_argument_type<P...>(p_arg);
} else {
return Variant::NIL;
}
}
#if defined(__GNUC__) && !defined(__clang__)
#pragma GCC diagnostic pop
#endif
virtual PropertyInfo _gen_argument_type_info(int p_arg) const override {
PropertyInfo pi;
call_get_argument_type_info<P...>(p_arg, pi);
return pi;
}
public:
#ifdef DEBUG_METHODS_ENABLED
virtual GodotTypeInfo::Metadata get_argument_meta(int p_arg) const override {
return call_get_argument_metadata<P...>(p_arg);
}
#endif
virtual Variant call(Object *p_object, const Variant **p_args, int p_arg_count, Callable::CallError &r_error) override {
#ifdef TYPED_METHOD_BIND
call_with_variant_argsc_dv(static_cast<T *>(p_object), method, p_args, p_arg_count, r_error, get_default_arguments());
#else
call_with_variant_argsc_dv(reinterpret_cast<MB_T *>(p_object), method, p_args, p_arg_count, r_error, get_default_arguments());
#endif
return Variant();
}
virtual void ptrcall(Object *p_object, const void **p_args, void *r_ret) override {
#ifdef TYPED_METHOD_BIND
call_with_ptr_argsc<T, P...>(static_cast<T *>(p_object), method, p_args);
#else
call_with_ptr_argsc<MB_T, P...>(reinterpret_cast<MB_T *>(p_object), method, p_args);
#endif
}
MethodBindTC(void (MB_T::*p_method)(P...) const) {
method = p_method;
_set_const(true);
_generate_argument_types(sizeof...(P));
set_argument_count(sizeof...(P));
}
};
template <class T, class... P>
MethodBind *create_method_bind(void (T::*p_method)(P...) const) {
#ifdef TYPED_METHOD_BIND
MethodBind *a = memnew((MethodBindTC<T, P...>)(p_method));
#else
MethodBind *a = memnew((MethodBindTC<P...>)(reinterpret_cast<void (MB_T::*)(P...) const>(p_method)));
#endif
a->set_instance_class(T::get_class_static());
return a;
}
// return, not const
#ifdef TYPED_METHOD_BIND
template <class T, class R, class... P>
#else
template <class R, class... P>
#endif
class MethodBindTR : public MethodBind {
R(MB_T::*method)
(P...);
protected:
// GCC raises warnings in the case P = {} as the comparison is always false...
#if defined(__GNUC__) && !defined(__clang__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wlogical-op"
#endif
virtual Variant::Type _gen_argument_type(int p_arg) const override {
if (p_arg >= 0 && p_arg < (int)sizeof...(P)) {
return call_get_argument_type<P...>(p_arg);
} else {
return GetTypeInfo<R>::VARIANT_TYPE;
}
}
virtual PropertyInfo _gen_argument_type_info(int p_arg) const override {
if (p_arg >= 0 && p_arg < (int)sizeof...(P)) {
PropertyInfo pi;
call_get_argument_type_info<P...>(p_arg, pi);
return pi;
} else {
return GetTypeInfo<R>::get_class_info();
}
}
#if defined(__GNUC__) && !defined(__clang__)
#pragma GCC diagnostic pop
#endif
public:
#ifdef DEBUG_METHODS_ENABLED
virtual GodotTypeInfo::Metadata get_argument_meta(int p_arg) const override {
if (p_arg >= 0) {
return call_get_argument_metadata<P...>(p_arg);
} else {
return GetTypeInfo<R>::METADATA;
}
}
#endif
virtual Variant call(Object *p_object, const Variant **p_args, int p_arg_count, Callable::CallError &r_error) override {
Variant ret;
#ifdef TYPED_METHOD_BIND
call_with_variant_args_ret_dv(static_cast<T *>(p_object), method, p_args, p_arg_count, ret, r_error, get_default_arguments());
#else
call_with_variant_args_ret_dv(reinterpret_cast<MB_T *>(p_object), method, p_args, p_arg_count, ret, r_error, get_default_arguments());
#endif
return ret;
}
virtual void ptrcall(Object *p_object, const void **p_args, void *r_ret) override {
#ifdef TYPED_METHOD_BIND
call_with_ptr_args_ret<T, R, P...>(static_cast<T *>(p_object), method, p_args, r_ret);
#else
call_with_ptr_args_ret<MB_T, R, P...>(reinterpret_cast<MB_T *>(p_object), method, p_args, r_ret);
#endif
}
MethodBindTR(R (MB_T::*p_method)(P...)) {
method = p_method;
_set_returns(true);
_generate_argument_types(sizeof...(P));
set_argument_count(sizeof...(P));
}
};
template <class T, class R, class... P>
MethodBind *create_method_bind(R (T::*p_method)(P...)) {
#ifdef TYPED_METHOD_BIND
MethodBind *a = memnew((MethodBindTR<T, R, P...>)(p_method));
#else
MethodBind *a = memnew((MethodBindTR<R, P...>)(reinterpret_cast<R (MB_T::*)(P...)>(p_method)));
#endif
a->set_instance_class(T::get_class_static());
return a;
}
// return, const
#ifdef TYPED_METHOD_BIND
template <class T, class R, class... P>
#else
template <class R, class... P>
#endif
class MethodBindTRC : public MethodBind {
R(MB_T::*method)
(P...) const;
protected:
// GCC raises warnings in the case P = {} as the comparison is always false...
#if defined(__GNUC__) && !defined(__clang__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wlogical-op"
#endif
virtual Variant::Type _gen_argument_type(int p_arg) const override {
if (p_arg >= 0 && p_arg < (int)sizeof...(P)) {
return call_get_argument_type<P...>(p_arg);
} else {
return GetTypeInfo<R>::VARIANT_TYPE;
}
}
virtual PropertyInfo _gen_argument_type_info(int p_arg) const override {
if (p_arg >= 0 && p_arg < (int)sizeof...(P)) {
PropertyInfo pi;
call_get_argument_type_info<P...>(p_arg, pi);
return pi;
} else {
return GetTypeInfo<R>::get_class_info();
}
}
#if defined(__GNUC__) && !defined(__clang__)
#pragma GCC diagnostic pop
#endif
public:
#ifdef DEBUG_METHODS_ENABLED
virtual GodotTypeInfo::Metadata get_argument_meta(int p_arg) const override {
if (p_arg >= 0) {
return call_get_argument_metadata<P...>(p_arg);
} else {
return GetTypeInfo<R>::METADATA;
}
}
#endif
virtual Variant call(Object *p_object, const Variant **p_args, int p_arg_count, Callable::CallError &r_error) override {
Variant ret;
#ifdef TYPED_METHOD_BIND
call_with_variant_args_retc_dv(static_cast<T *>(p_object), method, p_args, p_arg_count, ret, r_error, get_default_arguments());
#else
call_with_variant_args_retc_dv(reinterpret_cast<MB_T *>(p_object), method, p_args, p_arg_count, ret, r_error, get_default_arguments());
#endif
return ret;
}
virtual void ptrcall(Object *p_object, const void **p_args, void *r_ret) override {
#ifdef TYPED_METHOD_BIND
call_with_ptr_args_retc<T, R, P...>(static_cast<T *>(p_object), method, p_args, r_ret);
#else
call_with_ptr_args_retc<MB_T, R, P...>(reinterpret_cast<MB_T *>(p_object), method, p_args, r_ret);
#endif
}
MethodBindTRC(R (MB_T::*p_method)(P...) const) {
method = p_method;
_set_returns(true);
_set_const(true);
_generate_argument_types(sizeof...(P));
set_argument_count(sizeof...(P));
}
};
template <class T, class R, class... P>
MethodBind *create_method_bind(R (T::*p_method)(P...) const) {
#ifdef TYPED_METHOD_BIND
MethodBind *a = memnew((MethodBindTRC<T, R, P...>)(p_method));
#else
MethodBind *a = memnew((MethodBindTRC<R, P...>)(reinterpret_cast<R (MB_T::*)(P...) const>(p_method)));
#endif
a->set_instance_class(T::get_class_static());
return a;
}
/* STATIC BINDS */
// no return
template <class... P>
class MethodBindTS : public MethodBind {
void (*function)(P...);
protected:
// GCC raises warnings in the case P = {} as the comparison is always false...
#if defined(__GNUC__) && !defined(__clang__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wlogical-op"
#endif
virtual Variant::Type _gen_argument_type(int p_arg) const override {
if (p_arg >= 0 && p_arg < (int)sizeof...(P)) {
return call_get_argument_type<P...>(p_arg);
} else {
return Variant::NIL;
}
}
#if defined(__GNUC__) && !defined(__clang__)
#pragma GCC diagnostic pop
#endif
virtual PropertyInfo _gen_argument_type_info(int p_arg) const override {
PropertyInfo pi;
call_get_argument_type_info<P...>(p_arg, pi);
return pi;
}
public:
#ifdef DEBUG_METHODS_ENABLED
virtual GodotTypeInfo::Metadata get_argument_meta(int p_arg) const override {
return call_get_argument_metadata<P...>(p_arg);
}
#endif
virtual Variant call(Object *p_object, const Variant **p_args, int p_arg_count, Callable::CallError &r_error) override {
(void)p_object; // unused
call_with_variant_args_static_dv(function, p_args, p_arg_count, r_error, get_default_arguments());
return Variant();
}
virtual void ptrcall(Object *p_object, const void **p_args, void *r_ret) override {
(void)p_object;
(void)r_ret;
call_with_ptr_args_static_method(function, p_args);
}
MethodBindTS(void (*p_function)(P...)) {
function = p_function;
_generate_argument_types(sizeof...(P));
set_argument_count(sizeof...(P));
_set_static(true);
}
};
template <class... P>
MethodBind *create_static_method_bind(void (*p_method)(P...)) {
MethodBind *a = memnew((MethodBindTS<P...>)(p_method));
return a;
}
// return
template <class R, class... P>
class MethodBindTRS : public MethodBind {
R(*function)
(P...);
protected:
// GCC raises warnings in the case P = {} as the comparison is always false...
#if defined(__GNUC__) && !defined(__clang__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wlogical-op"
#endif
virtual Variant::Type _gen_argument_type(int p_arg) const override {
if (p_arg >= 0 && p_arg < (int)sizeof...(P)) {
return call_get_argument_type<P...>(p_arg);
} else {
return GetTypeInfo<R>::VARIANT_TYPE;
}
}
#if defined(__GNUC__) && !defined(__clang__)
#pragma GCC diagnostic pop
#endif
virtual PropertyInfo _gen_argument_type_info(int p_arg) const override {
if (p_arg >= 0 && p_arg < (int)sizeof...(P)) {
PropertyInfo pi;
call_get_argument_type_info<P...>(p_arg, pi);
return pi;
} else {
return GetTypeInfo<R>::get_class_info();
}
}
public:
#ifdef DEBUG_METHODS_ENABLED
virtual GodotTypeInfo::Metadata get_argument_meta(int p_arg) const override {
if (p_arg >= 0) {
return call_get_argument_metadata<P...>(p_arg);
} else {
return GetTypeInfo<R>::METADATA;
}
}
#endif
virtual Variant call(Object *p_object, const Variant **p_args, int p_arg_count, Callable::CallError &r_error) override {
Variant ret;
call_with_variant_args_static_ret_dv(function, p_args, p_arg_count, ret, r_error, get_default_arguments());
return ret;
}
virtual void ptrcall(Object *p_object, const void **p_args, void *r_ret) override {
(void)p_object;
call_with_ptr_args_static_method_ret(function, p_args, r_ret);
}
MethodBindTRS(R (*p_function)(P...)) {
function = p_function;
_generate_argument_types(sizeof...(P));
set_argument_count(sizeof...(P));
_set_static(true);
_set_returns(true);
}
};
template <class R, class... P>
MethodBind *create_static_method_bind(R (*p_method)(P...)) {
MethodBind *a = memnew((MethodBindTRS<R, P...>)(p_method));
return a;
}
#endif // METHOD_BIND_H