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Register custom converters for method binding
Signed-off-by: Martin Rodriguez Reboredo <yakoyoku@gmail.com>
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3 files changed

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‎include/godot_cpp/core/method_ptrcall.hpp‎

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@@ -113,6 +113,62 @@ struct PtrToArg {};
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} \
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}
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#define MAKE_PTRARG_CONVERTER(m_type, m_conv, m_to, m_from) \
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template <> \
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struct PtrToArg<m_type> { \
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_FORCE_INLINE_ static m_type convert(const void *p_ptr) { \
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return m_to(*reinterpret_cast<const m_conv *>(p_ptr)); \
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} \
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typedef m_conv EncodeT; \
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_FORCE_INLINE_ static void encode(m_type p_val, void *p_ptr) { \
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*reinterpret_cast<m_conv *>(p_ptr) = m_from(p_val); \
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} \
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_FORCE_INLINE_ static m_conv encode_arg(m_type p_val) { \
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return m_from(p_val); \
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} \
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}; \
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template <> \
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struct PtrToArg<const m_type &> { \
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_FORCE_INLINE_ static m_type convert(const void *p_ptr) { \
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return m_to(*reinterpret_cast<const m_conv *>(p_ptr)); \
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} \
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typedef m_conv EncodeT; \
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_FORCE_INLINE_ static void encode(m_type p_val, void *p_ptr) { \
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*reinterpret_cast<m_conv *>(p_ptr) = m_from(p_val); \
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} \
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_FORCE_INLINE_ static m_conv encode_arg(m_type p_val) { \
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return m_from(p_val); \
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} \
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}
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#define MAKE_PTRARG_CONVERTER_BY_REFERENCE(m_type, m_conv, m_to, m_from) \
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template <> \
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struct PtrToArg<m_type> { \
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_FORCE_INLINE_ static m_type convert(const void *p_ptr) { \
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return m_to(*reinterpret_cast<const m_conv *>(p_ptr)); \
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} \
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typedef m_conv EncodeT; \
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_FORCE_INLINE_ static void encode(const m_type &p_val, void *p_ptr) { \
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*reinterpret_cast<m_type *>(p_ptr) = m_from(p_val); \
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} \
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_FORCE_INLINE_ static m_conv encode_arg(const m_type &p_val) { \
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return m_from(p_val); \
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} \
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}; \
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template <> \
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struct PtrToArg<const m_type &> { \
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_FORCE_INLINE_ static m_type convert(const void *p_ptr) { \
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return m_to(*reinterpret_cast<const m_conv *>(p_ptr)); \
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} \
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typedef m_conv EncodeT; \
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_FORCE_INLINE_ static void encode(const m_type &p_val, void *p_ptr) { \
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*reinterpret_cast<m_type *>(p_ptr) = m_from(p_val); \
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} \
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_FORCE_INLINE_ static m_conv encode_arg(const m_type &p_val) { \
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return m_from(p_val); \
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} \
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}
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MAKE_PTRARGCONV(bool, uint8_t);
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// Integer types.
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MAKE_PTRARGCONV(uint8_t, int64_t);

‎include/godot_cpp/variant/converter.hpp‎

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/**************************************************************************/
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/* converter.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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#pragma once
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#include <godot_cpp/core/defs.hpp>
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#include <godot_cpp/core/method_ptrcall.hpp>
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#include <godot_cpp/core/type_info.hpp>
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#include <godot_cpp/variant/variant.hpp>
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#include <gdextension_interface.h>
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#define GD_REGISTER_CONVERSION(m_type, m_conv, m_to, m_from, m_var_type) \
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namespace godot { \
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template<> \
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struct VariantCaster<m_type> { \
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_FORCE_INLINE_ static m_type cast(const Variant &p_variant) { \
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return m_to(p_variant); \
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} \
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template<> \
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struct VariantCaster<m_type &> { \
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_FORCE_INLINE_ static m_type cast(const Variant &p_variant) { \
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return m_to(p_variant); \
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} \
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template<> \
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struct VariantCaster<const m_type &> { \
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_FORCE_INLINE_ static m_type cast(const Variant &p_variant) { \
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return m_to(p_variant); \
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} \
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MAKE_TYPE_INFO(m_type, m_var_type) \
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MAKE_PTRARG_CONVERTER(m_type, m_conv, m_to, m_from); \
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}
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#define GD_REGISTER_CONVERSION_BY_REFERENCE(m_type, m_conv, m_to, m_from, m_var_type) \
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namespace godot { \
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template<> \
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struct VariantCaster<m_type> { \
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_FORCE_INLINE_ static m_type cast(const Variant &p_variant) { \
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return m_to(p_variant); \
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} \
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template<> \
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struct VariantCaster<m_type &> { \
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_FORCE_INLINE_ static m_type cast(const Variant &p_variant) { \
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return m_to(p_variant); \
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} \
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template<> \
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struct VariantCaster<const m_type &> { \
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_FORCE_INLINE_ static m_type cast(const Variant &p_variant) { \
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return m_to(p_variant); \
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} \
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MAKE_TYPE_INFO(m_type, m_var_type) \
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MAKE_PTRARG_CONVERTER_BY_REFERENCE(m_type, m_conv, m_to, m_from); \
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}
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‎include/godot_cpp/variant/variant.hpp‎

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@@ -215,6 +215,9 @@ class Variant {
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Variant(const PackedVector3Array &v);
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Variant(const PackedColorArray &v);
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Variant(const PackedVector4Array &v);
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template<typename T, typename = std::void_t<decltype(PtrToArg<T>::encode_arg(std::declval<T>()))>>
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Variant(T v) :
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Variant(PtrToArg<T>::encode_arg(v)) {}
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~Variant();
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operator bool() const;

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