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Diffstat (limited to 'core/variant/binder_common.h')
| -rw-r--r-- | core/variant/binder_common.h | 657 |
1 files changed, 657 insertions, 0 deletions
diff --git a/core/variant/binder_common.h b/core/variant/binder_common.h new file mode 100644 index 0000000000..e72f76c5e1 --- /dev/null +++ b/core/variant/binder_common.h @@ -0,0 +1,657 @@ +/*************************************************************************/ +/* binder_common.h */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2020 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 BINDER_COMMON_H +#define BINDER_COMMON_H + +#include "core/object/object.h" +#include "core/templates/list.h" +#include "core/templates/simple_type.h" +#include "core/typedefs.h" +#include "core/variant/method_ptrcall.h" +#include "core/variant/type_info.h" +#include "core/variant/variant.h" +#include "core/variant/variant_internal.h" + +#include <stdio.h> + +template <class T> +struct VariantCaster { + static _FORCE_INLINE_ T cast(const Variant &p_variant) { + return p_variant; + } +}; + +template <class T> +struct VariantCaster<T &> { + static _FORCE_INLINE_ T cast(const Variant &p_variant) { + return p_variant; + } +}; + +template <class T> +struct VariantCaster<const T &> { + static _FORCE_INLINE_ T cast(const Variant &p_variant) { + return p_variant; + } +}; + +#ifdef PTRCALL_ENABLED + +#define VARIANT_ENUM_CAST(m_enum) \ + MAKE_ENUM_TYPE_INFO(m_enum) \ + template <> \ + struct VariantCaster<m_enum> { \ + static _FORCE_INLINE_ m_enum cast(const Variant &p_variant) { \ + return (m_enum)p_variant.operator int(); \ + } \ + }; \ + template <> \ + struct PtrToArg<m_enum> { \ + _FORCE_INLINE_ static m_enum convert(const void *p_ptr) { \ + return m_enum(*reinterpret_cast<const int *>(p_ptr)); \ + } \ + _FORCE_INLINE_ static void encode(m_enum p_val, const void *p_ptr) { \ + *(int *)p_ptr = p_val; \ + } \ + }; + +#else + +#define VARIANT_ENUM_CAST(m_enum) \ + MAKE_ENUM_TYPE_INFO(m_enum) \ + template <> \ + struct VariantCaster<m_enum> { \ + static _FORCE_INLINE_ m_enum cast(const Variant &p_variant) { \ + return (m_enum)p_variant.operator int(); \ + } \ + }; + +#endif + +// Object enum casts must go here +VARIANT_ENUM_CAST(Object::ConnectFlags); + +VARIANT_ENUM_CAST(Vector3::Axis); + +VARIANT_ENUM_CAST(Error); +VARIANT_ENUM_CAST(Margin); +VARIANT_ENUM_CAST(Corner); +VARIANT_ENUM_CAST(Orientation); +VARIANT_ENUM_CAST(HAlign); +VARIANT_ENUM_CAST(VAlign); +VARIANT_ENUM_CAST(PropertyHint); +VARIANT_ENUM_CAST(PropertyUsageFlags); +VARIANT_ENUM_CAST(Variant::Type); +VARIANT_ENUM_CAST(Variant::Operator); + +template <> +struct VariantCaster<char32_t> { + static _FORCE_INLINE_ char32_t cast(const Variant &p_variant) { + return (char32_t)p_variant.operator int(); + } +}; +#ifdef PTRCALL_ENABLED +template <> +struct PtrToArg<char32_t> { + _FORCE_INLINE_ static char32_t convert(const void *p_ptr) { + return char32_t(*reinterpret_cast<const int *>(p_ptr)); + } + _FORCE_INLINE_ static void encode(char32_t p_val, const void *p_ptr) { + *(int *)p_ptr = p_val; + } +}; +#endif + +template <typename T> +struct VariantObjectClassChecker { + static _FORCE_INLINE_ bool check(const Variant &p_variant) { + return true; + } +}; + +template <> +struct VariantObjectClassChecker<Node *> { + static _FORCE_INLINE_ bool check(const Variant &p_variant) { + Object *obj = p_variant; + Node *node = p_variant; + return node || !obj; + } +}; + +template <> +struct VariantObjectClassChecker<Control *> { + static _FORCE_INLINE_ bool check(const Variant &p_variant) { + Object *obj = p_variant; + Control *control = p_variant; + return control || !obj; + } +}; + +#ifdef DEBUG_METHODS_ENABLED + +template <class T> +struct VariantCasterAndValidate { + static _FORCE_INLINE_ T cast(const Variant **p_args, uint32_t p_arg_idx, Callable::CallError &r_error) { + Variant::Type argtype = GetTypeInfo<T>::VARIANT_TYPE; + if (!Variant::can_convert_strict(p_args[p_arg_idx]->get_type(), argtype) || + !VariantObjectClassChecker<T>::check(p_args[p_arg_idx])) { + r_error.error = Callable::CallError::CALL_ERROR_INVALID_ARGUMENT; + r_error.argument = p_arg_idx; + r_error.expected = argtype; + } + + return VariantCaster<T>::cast(*p_args[p_arg_idx]); + } +}; + +template <class T> +struct VariantCasterAndValidate<T &> { + static _FORCE_INLINE_ T cast(const Variant **p_args, uint32_t p_arg_idx, Callable::CallError &r_error) { + Variant::Type argtype = GetTypeInfo<T>::VARIANT_TYPE; + if (!Variant::can_convert_strict(p_args[p_arg_idx]->get_type(), argtype) || + !VariantObjectClassChecker<T>::check(p_args[p_arg_idx])) { + r_error.error = Callable::CallError::CALL_ERROR_INVALID_ARGUMENT; + r_error.argument = p_arg_idx; + r_error.expected = argtype; + } + + return VariantCaster<T>::cast(*p_args[p_arg_idx]); + } +}; + +template <class T> +struct VariantCasterAndValidate<const T &> { + static _FORCE_INLINE_ T cast(const Variant **p_args, uint32_t p_arg_idx, Callable::CallError &r_error) { + Variant::Type argtype = GetTypeInfo<T>::VARIANT_TYPE; + if (!Variant::can_convert_strict(p_args[p_arg_idx]->get_type(), argtype) || + !VariantObjectClassChecker<T>::check(p_args[p_arg_idx])) { + r_error.error = Callable::CallError::CALL_ERROR_INVALID_ARGUMENT; + r_error.argument = p_arg_idx; + r_error.expected = argtype; + } + + return VariantCaster<T>::cast(*p_args[p_arg_idx]); + } +}; + +#endif // DEBUG_METHODS_ENABLED + +template <class T, class... P, size_t... Is> +void call_with_variant_args_helper(T *p_instance, void (T::*p_method)(P...), const Variant **p_args, Callable::CallError &r_error, IndexSequence<Is...>) { + r_error.error = Callable::CallError::CALL_OK; + +#ifdef DEBUG_METHODS_ENABLED + (p_instance->*p_method)(VariantCasterAndValidate<P>::cast(p_args, Is, r_error)...); +#else + (p_instance->*p_method)(VariantCaster<P>::cast(*p_args[Is])...); +#endif + (void)(p_args); //avoid warning +} + +template <class T, class... P, size_t... Is> +void call_with_variant_argsc_helper(T *p_instance, void (T::*p_method)(P...) const, const Variant **p_args, Callable::CallError &r_error, IndexSequence<Is...>) { + r_error.error = Callable::CallError::CALL_OK; + +#ifdef DEBUG_METHODS_ENABLED + (p_instance->*p_method)(VariantCasterAndValidate<P>::cast(p_args, Is, r_error)...); +#else + (p_instance->*p_method)(VariantCaster<P>::cast(*p_args[Is])...); +#endif + (void)(p_args); //avoid warning +} + +#ifdef PTRCALL_ENABLED + +template <class T, class... P, size_t... Is> +void call_with_ptr_args_helper(T *p_instance, void (T::*p_method)(P...), const void **p_args, IndexSequence<Is...>) { + (p_instance->*p_method)(PtrToArg<P>::convert(p_args[Is])...); +} + +template <class T, class... P, size_t... Is> +void call_with_ptr_argsc_helper(T *p_instance, void (T::*p_method)(P...) const, const void **p_args, IndexSequence<Is...>) { + (p_instance->*p_method)(PtrToArg<P>::convert(p_args[Is])...); +} + +template <class T, class R, class... P, size_t... Is> +void call_with_ptr_args_ret_helper(T *p_instance, R (T::*p_method)(P...), const void **p_args, void *r_ret, IndexSequence<Is...>) { + PtrToArg<R>::encode((p_instance->*p_method)(PtrToArg<P>::convert(p_args[Is])...), r_ret); +} + +template <class T, class R, class... P, size_t... Is> +void call_with_ptr_args_retc_helper(T *p_instance, R (T::*p_method)(P...) const, const void **p_args, void *r_ret, IndexSequence<Is...>) { + PtrToArg<R>::encode((p_instance->*p_method)(PtrToArg<P>::convert(p_args[Is])...), r_ret); +} + +template <class T, class R, class... P, size_t... Is> +void call_with_ptr_args_static_retc_helper(T *p_instance, R (*p_method)(T *, P...), const void **p_args, void *r_ret, IndexSequence<Is...>) { + PtrToArg<R>::encode(p_method(p_instance, PtrToArg<P>::convert(p_args[Is])...), r_ret); +} + +#endif // PTRCALL_ENABLED + +template <class T, class... P, size_t... Is> +void call_with_validated_variant_args_helper(T *p_instance, void (T::*p_method)(P...), const Variant **p_args, IndexSequence<Is...>) { + (p_instance->*p_method)((VariantInternalAccessor<typename GetSimpleTypeT<P>::type_t>::get(p_args[Is]))...); +} + +template <class T, class... P, size_t... Is> +void call_with_validated_variant_argsc_helper(T *p_instance, void (T::*p_method)(P...) const, const Variant **p_args, IndexSequence<Is...>) { + (p_instance->*p_method)((VariantInternalAccessor<typename GetSimpleTypeT<P>::type_t>::get(p_args[Is]))...); +} + +template <class T, class R, class... P, size_t... Is> +void call_with_validated_variant_args_ret_helper(T *p_instance, R (T::*p_method)(P...), const Variant **p_args, Variant *r_ret, IndexSequence<Is...>) { + VariantInternalAccessor<typename GetSimpleTypeT<R>::type_t>::set(r_ret, (p_instance->*p_method)((VariantInternalAccessor<typename GetSimpleTypeT<P>::type_t>::get(p_args[Is]))...)); +} + +template <class T, class R, class... P, size_t... Is> +void call_with_validated_variant_args_retc_helper(T *p_instance, R (T::*p_method)(P...) const, const Variant **p_args, Variant *r_ret, IndexSequence<Is...>) { + VariantInternalAccessor<typename GetSimpleTypeT<R>::type_t>::set(r_ret, (p_instance->*p_method)((VariantInternalAccessor<typename GetSimpleTypeT<P>::type_t>::get(p_args[Is]))...)); +} + +template <class T, class R, class... P, size_t... Is> +void call_with_validated_variant_args_static_retc_helper(T *p_instance, R (*p_method)(T *, P...), const Variant **p_args, Variant *r_ret, IndexSequence<Is...>) { + VariantInternalAccessor<typename GetSimpleTypeT<R>::type_t>::set(r_ret, p_method(p_instance, (VariantInternalAccessor<typename GetSimpleTypeT<P>::type_t>::get(p_args[Is]))...)); +} + +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, Callable::CallError &r_error) { +#ifdef DEBUG_METHODS_ENABLED + if ((size_t)p_argcount > sizeof...(P)) { + r_error.error = Callable::CallError::CALL_ERROR_TOO_MANY_ARGUMENTS; + r_error.argument = sizeof...(P); + return; + } + + if ((size_t)p_argcount < sizeof...(P)) { + r_error.error = Callable::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS; + r_error.argument = 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... P> +void call_with_variant_args_dv(T *p_instance, void (T::*p_method)(P...), const Variant **p_args, int p_argcount, Callable::CallError &r_error, const Vector<Variant> &default_values) { +#ifdef DEBUG_ENABLED + if ((size_t)p_argcount > sizeof...(P)) { + r_error.error = Callable::CallError::CALL_ERROR_TOO_MANY_ARGUMENTS; + r_error.argument = sizeof...(P); + return; + } +#endif + + int32_t missing = (int32_t)sizeof...(P) - (int32_t)p_argcount; + + int32_t dvs = default_values.size(); +#ifdef DEBUG_ENABLED + if (missing > dvs) { + r_error.error = Callable::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS; + r_error.argument = sizeof...(P); + return; + } +#endif + + const Variant *args[sizeof...(P) == 0 ? 1 : sizeof...(P)]; //avoid zero sized array + for (int32_t i = 0; i < (int32_t)sizeof...(P); i++) { + if (i < p_argcount) { + args[i] = p_args[i]; + } else { + args[i] = &default_values[i - p_argcount + (dvs - missing)]; + } + } + + call_with_variant_args_helper(p_instance, p_method, args, r_error, BuildIndexSequence<sizeof...(P)>{}); +} + +template <class T, class... P> +void call_with_variant_argsc(T *p_instance, void (T::*p_method)(P...) const, const Variant **p_args, int p_argcount, Callable::CallError &r_error) { +#ifdef DEBUG_METHODS_ENABLED + if ((size_t)p_argcount > sizeof...(P)) { + r_error.error = Callable::CallError::CALL_ERROR_TOO_MANY_ARGUMENTS; + r_error.argument = sizeof...(P); + return; + } + + if ((size_t)p_argcount < sizeof...(P)) { + r_error.error = Callable::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS; + r_error.argument = 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... P> +void call_with_variant_argsc_dv(T *p_instance, void (T::*p_method)(P...) const, const Variant **p_args, int p_argcount, Callable::CallError &r_error, const Vector<Variant> &default_values) { +#ifdef DEBUG_ENABLED + if ((size_t)p_argcount > sizeof...(P)) { + r_error.error = Callable::CallError::CALL_ERROR_TOO_MANY_ARGUMENTS; + r_error.argument = sizeof...(P); + return; + } +#endif + + int32_t missing = (int32_t)sizeof...(P) - (int32_t)p_argcount; + + int32_t dvs = default_values.size(); +#ifdef DEBUG_ENABLED + if (missing > dvs) { + r_error.error = Callable::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS; + r_error.argument = sizeof...(P); + return; + } +#endif + + const Variant *args[sizeof...(P) == 0 ? 1 : sizeof...(P)]; //avoid zero sized array + for (int32_t i = 0; i < (int32_t)sizeof...(P); i++) { + if (i < p_argcount) { + args[i] = p_args[i]; + } else { + args[i] = &default_values[i - p_argcount + (dvs - missing)]; + } + } + + call_with_variant_argsc_helper(p_instance, p_method, args, r_error, BuildIndexSequence<sizeof...(P)>{}); +} + +template <class T, class R, class... P> +void call_with_variant_args_ret_dv(T *p_instance, R (T::*p_method)(P...), const Variant **p_args, int p_argcount, Variant &r_ret, Callable::CallError &r_error, const Vector<Variant> &default_values) { +#ifdef DEBUG_ENABLED + if ((size_t)p_argcount > sizeof...(P)) { + r_error.error = Callable::CallError::CALL_ERROR_TOO_MANY_ARGUMENTS; + r_error.argument = sizeof...(P); + return; + } +#endif + + int32_t missing = (int32_t)sizeof...(P) - (int32_t)p_argcount; + + int32_t dvs = default_values.size(); +#ifdef DEBUG_ENABLED + if (missing > dvs) { + r_error.error = Callable::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS; + r_error.argument = sizeof...(P); + return; + } +#endif + + const Variant *args[sizeof...(P) == 0 ? 1 : sizeof...(P)]; //avoid zero sized array + for (int32_t i = 0; i < (int32_t)sizeof...(P); i++) { + if (i < p_argcount) { + args[i] = p_args[i]; + } else { + args[i] = &default_values[i - p_argcount + (dvs - missing)]; + } + } + + call_with_variant_args_ret_helper(p_instance, p_method, args, r_ret, r_error, BuildIndexSequence<sizeof...(P)>{}); +} + +template <class T, class R, class... P> +void call_with_variant_args_retc_dv(T *p_instance, R (T::*p_method)(P...) const, const Variant **p_args, int p_argcount, Variant &r_ret, Callable::CallError &r_error, const Vector<Variant> &default_values) { +#ifdef DEBUG_ENABLED + if ((size_t)p_argcount > sizeof...(P)) { + r_error.error = Callable::CallError::CALL_ERROR_TOO_MANY_ARGUMENTS; + r_error.argument = sizeof...(P); + return; + } +#endif + + int32_t missing = (int32_t)sizeof...(P) - (int32_t)p_argcount; + + int32_t dvs = default_values.size(); +#ifdef DEBUG_ENABLED + if (missing > dvs) { + r_error.error = Callable::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS; + r_error.argument = sizeof...(P); + return; + } +#endif + + const Variant *args[sizeof...(P) == 0 ? 1 : sizeof...(P)]; //avoid zero sized array + for (int32_t i = 0; i < (int32_t)sizeof...(P); i++) { + if (i < p_argcount) { + args[i] = p_args[i]; + } else { + args[i] = &default_values[i - p_argcount + (dvs - missing)]; + } + } + + call_with_variant_args_retc_helper(p_instance, p_method, args, r_ret, r_error, BuildIndexSequence<sizeof...(P)>{}); +} + +#ifdef PTRCALL_ENABLED + +template <class T, class... P> +void call_with_ptr_args(T *p_instance, void (T::*p_method)(P...), const void **p_args) { + call_with_ptr_args_helper<T, P...>(p_instance, p_method, p_args, BuildIndexSequence<sizeof...(P)>{}); +} + +template <class T, class... P> +void call_with_ptr_argsc(T *p_instance, void (T::*p_method)(P...) const, const void **p_args) { + call_with_ptr_argsc_helper<T, P...>(p_instance, p_method, p_args, BuildIndexSequence<sizeof...(P)>{}); +} + +template <class T, class R, class... P> +void call_with_ptr_args_ret(T *p_instance, R (T::*p_method)(P...), const void **p_args, void *r_ret) { + call_with_ptr_args_ret_helper<T, R, P...>(p_instance, p_method, p_args, r_ret, BuildIndexSequence<sizeof...(P)>{}); +} + +template <class T, class R, class... P> +void call_with_ptr_args_retc(T *p_instance, R (T::*p_method)(P...) const, const void **p_args, void *r_ret) { + call_with_ptr_args_retc_helper<T, R, P...>(p_instance, p_method, p_args, r_ret, BuildIndexSequence<sizeof...(P)>{}); +} + +template <class T, class R, class... P> +void call_with_ptr_args_static_retc(T *p_instance, R (*p_method)(T *, P...), const void **p_args, void *r_ret) { + call_with_ptr_args_static_retc_helper<T, R, P...>(p_instance, p_method, p_args, r_ret, BuildIndexSequence<sizeof...(P)>{}); +} + +#endif // PTRCALL_ENABLED + +template <class T, class... P> +void call_with_validated_variant_args(Variant *base, void (T::*p_method)(P...), const Variant **p_args) { + call_with_validated_variant_args_helper<T, P...>(VariantGetInternalPtr<T>::get_ptr(base), p_method, p_args, BuildIndexSequence<sizeof...(P)>{}); +} + +template <class T, class R, class... P> +void call_with_validated_variant_args_ret(Variant *base, R (T::*p_method)(P...), const Variant **p_args, Variant *r_ret) { + call_with_validated_variant_args_ret_helper<T, R, P...>(VariantGetInternalPtr<T>::get_ptr(base), p_method, p_args, r_ret, BuildIndexSequence<sizeof...(P)>{}); +} + +template <class T, class R, class... P> +void call_with_validated_variant_args_retc(Variant *base, R (T::*p_method)(P...) const, const Variant **p_args, Variant *r_ret) { + call_with_validated_variant_args_retc_helper<T, R, P...>(VariantGetInternalPtr<T>::get_ptr(base), p_method, p_args, r_ret, BuildIndexSequence<sizeof...(P)>{}); +} + +template <class T, class R, class... P> +void call_with_validated_variant_args_static_retc(Variant *base, R (*p_method)(T *, P...), const Variant **p_args, Variant *r_ret) { + call_with_validated_variant_args_static_retc_helper<T, R, P...>(VariantGetInternalPtr<T>::get_ptr(base), p_method, p_args, r_ret, BuildIndexSequence<sizeof...(P)>{}); +} + +// GCC raises "parameter 'p_args' set but not used" when P = {}, +// it's not clever enough to treat other P values as making this branch valid. +#if defined(DEBUG_METHODS_ENABLED) && defined(__GNUC__) && !defined(__clang__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wunused-but-set-parameter" +#endif + +#ifdef DEBUG_METHODS_ENABLED + +template <class Q> +void call_get_argument_type_helper(int p_arg, int &index, Variant::Type &type) { + if (p_arg == index) { + type = GetTypeInfo<Q>::VARIANT_TYPE; + } + index++; +} + +template <class... P> +Variant::Type call_get_argument_type(int p_arg) { + Variant::Type type = Variant::NIL; + int index = 0; + // I think rocket science is simpler than modern C++. + using expand_type = int[]; + expand_type a{ 0, (call_get_argument_type_helper<P>(p_arg, index, type), 0)... }; + (void)a; // Suppress (valid, but unavoidable) -Wunused-variable warning. + (void)index; // Suppress GCC warning. + return type; +} + +template <class Q> +void call_get_argument_type_info_helper(int p_arg, int &index, PropertyInfo &info) { + if (p_arg == index) { + info = GetTypeInfo<Q>::get_class_info(); + } + index++; +} + +template <class... P> +void call_get_argument_type_info(int p_arg, PropertyInfo &info) { + int index = 0; + // I think rocket science is simpler than modern C++. + using expand_type = int[]; + expand_type a{ 0, (call_get_argument_type_info_helper<P>(p_arg, index, info), 0)... }; + (void)a; // Suppress (valid, but unavoidable) -Wunused-variable warning. + (void)index; // Suppress GCC warning. +} + +template <class Q> +void call_get_argument_metadata_helper(int p_arg, int &index, GodotTypeInfo::Metadata &md) { + if (p_arg == index) { + md = GetTypeInfo<Q>::METADATA; + } + index++; +} + +template <class... P> +GodotTypeInfo::Metadata call_get_argument_metadata(int p_arg) { + GodotTypeInfo::Metadata md = GodotTypeInfo::METADATA_NONE; + + int index = 0; + // I think rocket science is simpler than modern C++. + using expand_type = int[]; + expand_type a{ 0, (call_get_argument_metadata_helper<P>(p_arg, index, md), 0)... }; + (void)a; // Suppress (valid, but unavoidable) -Wunused-variable warning. + (void)index; + return md; +} + +#else + +template <class... P> +Variant::Type call_get_argument_type(int p_arg) { + return Variant::NIL; +} + +#endif // DEBUG_METHODS_ENABLED + +////////////////////// + +template <class T, class R, class... P, size_t... Is> +void call_with_variant_args_ret_helper(T *p_instance, R (T::*p_method)(P...), const Variant **p_args, Variant &r_ret, Callable::CallError &r_error, IndexSequence<Is...>) { + r_error.error = Callable::CallError::CALL_OK; + +#ifdef DEBUG_METHODS_ENABLED + r_ret = (p_instance->*p_method)(VariantCasterAndValidate<P>::cast(p_args, Is, r_error)...); +#else + r_ret = (p_instance->*p_method)(VariantCaster<P>::cast(*p_args[Is])...); +#endif +} + +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, Callable::CallError &r_error) { +#ifdef DEBUG_METHODS_ENABLED + if ((size_t)p_argcount > sizeof...(P)) { + r_error.error = Callable::CallError::CALL_ERROR_TOO_MANY_ARGUMENTS; + r_error.argument = sizeof...(P); + return; + } + + if ((size_t)p_argcount < sizeof...(P)) { + r_error.error = Callable::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS; + r_error.argument = 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, size_t... Is> +void call_with_variant_args_retc_helper(T *p_instance, R (T::*p_method)(P...) const, const Variant **p_args, Variant &r_ret, Callable::CallError &r_error, IndexSequence<Is...>) { + r_error.error = Callable::CallError::CALL_OK; + +#ifdef DEBUG_METHODS_ENABLED + r_ret = (p_instance->*p_method)(VariantCasterAndValidate<P>::cast(p_args, Is, r_error)...); +#else + r_ret = (p_instance->*p_method)(VariantCaster<P>::cast(*p_args[Is])...); +#endif + (void)p_args; +} + +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, Callable::CallError &r_error) { +#ifdef DEBUG_METHODS_ENABLED + if ((size_t)p_argcount > sizeof...(P)) { + r_error.error = Callable::CallError::CALL_ERROR_TOO_MANY_ARGUMENTS; + r_error.argument = sizeof...(P); + return; + } + + if ((size_t)p_argcount < sizeof...(P)) { + r_error.error = Callable::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS; + r_error.argument = 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 R, class... P, size_t... Is> +void call_with_variant_args_retc_static_helper(T *p_instance, R (*p_method)(T *, P...), const Variant **p_args, Variant &r_ret, Callable::CallError &r_error, IndexSequence<Is...>) { + r_error.error = Callable::CallError::CALL_OK; + +#ifdef DEBUG_METHODS_ENABLED + r_ret = (p_method)(p_instance, VariantCasterAndValidate<P>::cast(p_args, Is, r_error)...); +#else + r_ret = (p_method)(p_instance, VariantCaster<P>::cast(*p_args[Is])...); +#endif + + (void)p_args; +} + +#if defined(DEBUG_METHODS_ENABLED) && defined(__GNUC__) && !defined(__clang__) +#pragma GCC diagnostic pop +#endif + +#endif // BINDER_COMMON_H |