253 lines
11 KiB
C++
253 lines
11 KiB
C++
/*************************************************************************/
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/* type_info.h */
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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) 2007-2019 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md) */
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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 GET_TYPE_INFO_H
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#define GET_TYPE_INFO_H
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#ifdef DEBUG_METHODS_ENABLED
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template <bool C, typename T = void>
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struct EnableIf {
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typedef T type;
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};
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template <typename T>
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struct EnableIf<false, T> {
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};
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template <typename, typename>
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struct TypesAreSame {
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static bool const value = false;
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};
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template <typename A>
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struct TypesAreSame<A, A> {
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static bool const value = true;
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};
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template <typename B, typename D>
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struct TypeInherits {
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static D *get_d();
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static char (&test(B *))[1];
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static char (&test(...))[2];
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static bool const value = sizeof(test(get_d())) == sizeof(char) &&
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!TypesAreSame<B volatile const, void volatile const>::value;
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};
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template <class T, typename = void>
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struct GetTypeInfo {
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static const Variant::Type VARIANT_TYPE = Variant::NIL;
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static inline PropertyInfo get_class_info() {
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ERR_PRINT("GetTypeInfo fallback. Bug!");
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return PropertyInfo(); // Not "Nil", this is an error
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}
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};
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#define MAKE_TYPE_INFO(m_type, m_var_type) \
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template <> \
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struct GetTypeInfo<m_type> { \
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static const Variant::Type VARIANT_TYPE = m_var_type; \
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static inline PropertyInfo get_class_info() { \
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return PropertyInfo(VARIANT_TYPE, String()); \
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} \
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}; \
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template <> \
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struct GetTypeInfo<const m_type &> { \
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static const Variant::Type VARIANT_TYPE = m_var_type; \
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static inline PropertyInfo get_class_info() { \
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return PropertyInfo(VARIANT_TYPE, String()); \
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} \
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};
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MAKE_TYPE_INFO(bool, Variant::BOOL)
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MAKE_TYPE_INFO(uint8_t, Variant::INT)
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MAKE_TYPE_INFO(int8_t, Variant::INT)
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MAKE_TYPE_INFO(uint16_t, Variant::INT)
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MAKE_TYPE_INFO(int16_t, Variant::INT)
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MAKE_TYPE_INFO(uint32_t, Variant::INT)
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MAKE_TYPE_INFO(int32_t, Variant::INT)
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MAKE_TYPE_INFO(int64_t, Variant::INT)
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MAKE_TYPE_INFO(uint64_t, Variant::INT)
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MAKE_TYPE_INFO(wchar_t, Variant::INT)
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MAKE_TYPE_INFO(float, Variant::REAL)
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MAKE_TYPE_INFO(double, Variant::REAL)
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MAKE_TYPE_INFO(String, Variant::STRING)
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MAKE_TYPE_INFO(Vector2, Variant::VECTOR2)
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MAKE_TYPE_INFO(Rect2, Variant::RECT2)
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MAKE_TYPE_INFO(Vector3, Variant::VECTOR3)
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MAKE_TYPE_INFO(Transform2D, Variant::TRANSFORM2D)
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MAKE_TYPE_INFO(Plane, Variant::PLANE)
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MAKE_TYPE_INFO(Quat, Variant::QUAT)
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MAKE_TYPE_INFO(AABB, Variant::AABB)
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MAKE_TYPE_INFO(Basis, Variant::BASIS)
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MAKE_TYPE_INFO(Transform, Variant::TRANSFORM)
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MAKE_TYPE_INFO(Color, Variant::COLOR)
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MAKE_TYPE_INFO(NodePath, Variant::NODE_PATH)
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MAKE_TYPE_INFO(RID, Variant::_RID)
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MAKE_TYPE_INFO(Dictionary, Variant::DICTIONARY)
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MAKE_TYPE_INFO(Array, Variant::ARRAY)
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MAKE_TYPE_INFO(PoolByteArray, Variant::POOL_BYTE_ARRAY)
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MAKE_TYPE_INFO(PoolIntArray, Variant::POOL_INT_ARRAY)
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MAKE_TYPE_INFO(PoolRealArray, Variant::POOL_REAL_ARRAY)
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MAKE_TYPE_INFO(PoolStringArray, Variant::POOL_STRING_ARRAY)
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MAKE_TYPE_INFO(PoolVector2Array, Variant::POOL_VECTOR2_ARRAY)
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MAKE_TYPE_INFO(PoolVector3Array, Variant::POOL_VECTOR3_ARRAY)
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MAKE_TYPE_INFO(PoolColorArray, Variant::POOL_COLOR_ARRAY)
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MAKE_TYPE_INFO(StringName, Variant::STRING)
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MAKE_TYPE_INFO(IP_Address, Variant::STRING)
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class BSP_Tree;
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MAKE_TYPE_INFO(BSP_Tree, Variant::DICTIONARY)
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//for RefPtr
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template <>
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struct GetTypeInfo<RefPtr> {
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static const Variant::Type VARIANT_TYPE = Variant::OBJECT;
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static inline PropertyInfo get_class_info() {
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return PropertyInfo(Variant::OBJECT, String(), PROPERTY_HINT_RESOURCE_TYPE, "Reference");
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}
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};
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template <>
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struct GetTypeInfo<const RefPtr &> {
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static const Variant::Type VARIANT_TYPE = Variant::OBJECT;
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static inline PropertyInfo get_class_info() {
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return PropertyInfo(Variant::OBJECT, String(), PROPERTY_HINT_RESOURCE_TYPE, "Reference");
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}
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};
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//for variant
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template <>
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struct GetTypeInfo<Variant> {
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static const Variant::Type VARIANT_TYPE = Variant::NIL;
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static inline PropertyInfo get_class_info() {
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return PropertyInfo(Variant::NIL, String(), PROPERTY_HINT_NONE, String(), PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_NIL_IS_VARIANT);
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}
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};
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template <>
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struct GetTypeInfo<const Variant &> {
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static const Variant::Type VARIANT_TYPE = Variant::NIL;
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static inline PropertyInfo get_class_info() {
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return PropertyInfo(Variant::NIL, String(), PROPERTY_HINT_NONE, String(), PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_NIL_IS_VARIANT);
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}
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};
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#define MAKE_TEMPLATE_TYPE_INFO(m_template, m_type, m_var_type) \
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template <> \
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struct GetTypeInfo<m_template<m_type> > { \
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static const Variant::Type VARIANT_TYPE = m_var_type; \
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static inline PropertyInfo get_class_info() { \
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return PropertyInfo(VARIANT_TYPE, String()); \
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} \
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}; \
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template <> \
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struct GetTypeInfo<const m_template<m_type> &> { \
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static const Variant::Type VARIANT_TYPE = m_var_type; \
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static inline PropertyInfo get_class_info() { \
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return PropertyInfo(VARIANT_TYPE, String()); \
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} \
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};
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MAKE_TEMPLATE_TYPE_INFO(Vector, uint8_t, Variant::POOL_BYTE_ARRAY)
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MAKE_TEMPLATE_TYPE_INFO(Vector, int, Variant::POOL_INT_ARRAY)
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MAKE_TEMPLATE_TYPE_INFO(Vector, float, Variant::POOL_REAL_ARRAY)
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MAKE_TEMPLATE_TYPE_INFO(Vector, String, Variant::POOL_STRING_ARRAY)
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MAKE_TEMPLATE_TYPE_INFO(Vector, Vector2, Variant::POOL_VECTOR2_ARRAY)
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MAKE_TEMPLATE_TYPE_INFO(Vector, Vector3, Variant::POOL_VECTOR3_ARRAY)
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MAKE_TEMPLATE_TYPE_INFO(Vector, Color, Variant::POOL_COLOR_ARRAY)
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MAKE_TEMPLATE_TYPE_INFO(Vector, Variant, Variant::ARRAY)
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MAKE_TEMPLATE_TYPE_INFO(Vector, RID, Variant::ARRAY)
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MAKE_TEMPLATE_TYPE_INFO(Vector, Plane, Variant::ARRAY)
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MAKE_TEMPLATE_TYPE_INFO(Vector, StringName, Variant::POOL_STRING_ARRAY)
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MAKE_TEMPLATE_TYPE_INFO(PoolVector, Plane, Variant::ARRAY)
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MAKE_TEMPLATE_TYPE_INFO(PoolVector, Face3, Variant::POOL_VECTOR3_ARRAY)
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template <typename T>
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struct GetTypeInfo<T *, typename EnableIf<TypeInherits<Object, T>::value>::type> {
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static const Variant::Type VARIANT_TYPE = Variant::OBJECT;
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static inline PropertyInfo get_class_info() {
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return PropertyInfo(StringName(T::get_class_static()));
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}
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};
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template <typename T>
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struct GetTypeInfo<const T *, typename EnableIf<TypeInherits<Object, T>::value>::type> {
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static const Variant::Type VARIANT_TYPE = Variant::OBJECT;
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static inline PropertyInfo get_class_info() {
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return PropertyInfo(StringName(T::get_class_static()));
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}
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};
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#define TEMPL_MAKE_ENUM_TYPE_INFO(m_enum, m_impl) \
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template <> \
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struct GetTypeInfo<m_impl> { \
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static const Variant::Type VARIANT_TYPE = Variant::INT; \
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static inline PropertyInfo get_class_info() { \
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return PropertyInfo(Variant::INT, String(), PROPERTY_HINT_NONE, String(), PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_CLASS_IS_ENUM, String(#m_enum).replace("::", ".")); \
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} \
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};
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#define MAKE_ENUM_TYPE_INFO(m_enum) \
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TEMPL_MAKE_ENUM_TYPE_INFO(m_enum, m_enum) \
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TEMPL_MAKE_ENUM_TYPE_INFO(m_enum, m_enum const) \
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TEMPL_MAKE_ENUM_TYPE_INFO(m_enum, m_enum &) \
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TEMPL_MAKE_ENUM_TYPE_INFO(m_enum, const m_enum &)
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template <typename T>
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inline StringName __constant_get_enum_name(T param, const String &p_constant) {
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if (GetTypeInfo<T>::VARIANT_TYPE == Variant::NIL)
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ERR_PRINTS("Missing VARIANT_ENUM_CAST for constant's enum: " + p_constant);
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return GetTypeInfo<T>::get_class_info().class_name;
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}
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#define CLASS_INFO(m_type) \
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(GetTypeInfo<m_type *>::VARIANT_TYPE != Variant::NIL ? \
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GetTypeInfo<m_type *>::get_class_info() : \
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GetTypeInfo<m_type>::get_class_info())
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#else
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#define MAKE_ENUM_TYPE_INFO(m_enum)
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#define CLASS_INFO(m_type)
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#endif // DEBUG_METHODS_ENABLED
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#endif // GET_TYPE_INFO_H
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