515 lines
65 KiB
C++
515 lines
65 KiB
C++
/**************************************************************************/
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/* wrapped.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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#ifndef GODOT_WRAPPED_HPP
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#define GODOT_WRAPPED_HPP
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#include <godot_cpp/core/memory.hpp>
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#include <godot_cpp/core/property_info.hpp>
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#include <godot_cpp/templates/list.hpp>
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#include <godot_cpp/templates/vector.hpp>
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#include <godot_cpp/godot.hpp>
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namespace godot {
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class ClassDB;
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typedef void GodotObject;
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template <typename T, std::enable_if_t<std::is_base_of<::godot::Wrapped, T>::value, bool> = true>
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_ALWAYS_INLINE_ void _pre_initialize();
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// Base for all engine classes, to contain the pointer to the engine instance.
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class Wrapped {
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friend class GDExtensionBinding;
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friend class ClassDB;
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friend void postinitialize_handler(Wrapped *);
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template <typename T, std::enable_if_t<std::is_base_of<::godot::Wrapped, T>::value, bool>>
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friend _ALWAYS_INLINE_ void _pre_initialize();
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thread_local static const StringName *_constructing_extension_class_name;
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thread_local static const GDExtensionInstanceBindingCallbacks *_constructing_class_binding_callbacks;
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template <typename T>
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_ALWAYS_INLINE_ static void _set_construct_info() {
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_constructing_extension_class_name = T::_get_extension_class_name();
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_constructing_class_binding_callbacks = &T::_gde_binding_callbacks;
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}
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protected:
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virtual bool _is_extension_class() const { return false; }
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static const StringName *_get_extension_class_name(); // This is needed to retrieve the class name before the godot object has its _extension and _extension_instance members assigned.
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#ifdef HOT_RELOAD_ENABLED
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struct RecreateInstance {
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GDExtensionClassInstancePtr wrapper;
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GDExtensionObjectPtr owner;
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RecreateInstance *next;
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};
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inline static RecreateInstance *recreate_instance = nullptr;
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#endif
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void _notification(int p_what) {}
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bool _set(const StringName &p_name, const Variant &p_property) { return false; }
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bool _get(const StringName &p_name, Variant &r_property) const { return false; }
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void _get_property_list(List<PropertyInfo> *p_list) const {}
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bool _property_can_revert(const StringName &p_name) const { return false; }
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bool _property_get_revert(const StringName &p_name, Variant &r_property) const { return false; }
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void _validate_property(PropertyInfo &p_property) const {}
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String _to_string() const { return "[" + String(get_class_static()) + ":" + itos(get_instance_id()) + "]"; }
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static void notification_bind(GDExtensionClassInstancePtr p_instance, int32_t p_what, GDExtensionBool p_reversed) {}
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static GDExtensionBool set_bind(GDExtensionClassInstancePtr p_instance, GDExtensionConstStringNamePtr p_name, GDExtensionConstVariantPtr p_value) { return false; }
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static GDExtensionBool get_bind(GDExtensionClassInstancePtr p_instance, GDExtensionConstStringNamePtr p_name, GDExtensionVariantPtr r_ret) { return false; }
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static const GDExtensionPropertyInfo *get_property_list_bind(GDExtensionClassInstancePtr p_instance, uint32_t *r_count) { return nullptr; }
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static void free_property_list_bind(GDExtensionClassInstancePtr p_instance, const GDExtensionPropertyInfo *p_list, uint32_t p_count) {}
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static GDExtensionBool property_can_revert_bind(GDExtensionClassInstancePtr p_instance, GDExtensionConstStringNamePtr p_name) { return false; }
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static GDExtensionBool property_get_revert_bind(GDExtensionClassInstancePtr p_instance, GDExtensionConstStringNamePtr p_name, GDExtensionVariantPtr r_ret) { return false; }
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static GDExtensionBool validate_property_bind(GDExtensionClassInstancePtr p_instance, GDExtensionPropertyInfo *p_property) { return false; }
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static void to_string_bind(GDExtensionClassInstancePtr p_instance, GDExtensionBool *r_is_valid, GDExtensionStringPtr r_out) {}
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// The only reason this has to be held here, is when we return results of `_get_property_list` to Godot, we pass
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// pointers to strings in this list. They have to remain valid to pass the bridge, until the list is freed by Godot...
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::godot::List<::godot::PropertyInfo> plist_owned;
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void _postinitialize();
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virtual void _notificationv(int32_t p_what, bool p_reversed = false) {}
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Wrapped(const StringName p_godot_class);
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Wrapped(GodotObject *p_godot_object);
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virtual ~Wrapped() {}
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public:
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static const StringName &get_class_static() {
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static const StringName string_name = StringName("Wrapped");
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return string_name;
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}
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uint64_t get_instance_id() const {
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return 0;
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}
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// Must be public but you should not touch this.
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GodotObject *_owner = nullptr;
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};
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template <typename T, std::enable_if_t<std::is_base_of<::godot::Wrapped, T>::value, bool>>
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_ALWAYS_INLINE_ void _pre_initialize() {
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Wrapped::_set_construct_info<T>();
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}
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_FORCE_INLINE_ void snarray_add_str(Vector<StringName> &arr) {
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}
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_FORCE_INLINE_ void snarray_add_str(Vector<StringName> &arr, const StringName &p_str) {
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arr.push_back(p_str);
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}
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template <typename... P>
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_FORCE_INLINE_ void snarray_add_str(Vector<StringName> &arr, const StringName &p_str, P... p_args) {
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arr.push_back(p_str);
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snarray_add_str(arr, p_args...);
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}
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template <typename... P>
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_FORCE_INLINE_ Vector<StringName> snarray(P... p_args) {
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Vector<StringName> arr;
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snarray_add_str(arr, p_args...);
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return arr;
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}
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namespace internal {
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GDExtensionPropertyInfo *create_c_property_list(const ::godot::List<::godot::PropertyInfo> &plist_cpp, uint32_t *r_size);
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void free_c_property_list(GDExtensionPropertyInfo *plist);
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typedef void (*EngineClassRegistrationCallback)();
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void add_engine_class_registration_callback(EngineClassRegistrationCallback p_callback);
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void register_engine_class(const StringName &p_name, const GDExtensionInstanceBindingCallbacks *p_callbacks);
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void register_engine_classes();
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template <typename T>
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struct EngineClassRegistration {
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EngineClassRegistration() {
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add_engine_class_registration_callback(&EngineClassRegistration<T>::callback);
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}
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static void callback() {
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register_engine_class(T::get_class_static(), &T::_gde_binding_callbacks);
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}
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};
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} // namespace internal
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} // namespace godot
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// Use this on top of your own classes.
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// Note: the trail of `***` is to keep sane diffs in PRs, because clang-format otherwise moves every `\` which makes
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// every line of the macro different
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#define GDCLASS(m_class, m_inherits) /***********************************************************************************************************************************************/ \
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private: \
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void operator=(const m_class &p_rval) {} \
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friend class ::godot::ClassDB; \
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friend class ::godot::Wrapped; \
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\
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protected: \
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virtual bool _is_extension_class() const override { return true; } \
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\
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static const ::godot::StringName *_get_extension_class_name() { \
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const ::godot::StringName &string_name = get_class_static(); \
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return &string_name; \
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} \
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\
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static void (*_get_bind_methods())() { \
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return &m_class::_bind_methods; \
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} \
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\
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static void (::godot::Wrapped::*_get_notification())(int) { \
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return (void(::godot::Wrapped::*)(int)) & m_class::_notification; \
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} \
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\
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static bool (::godot::Wrapped::*_get_set())(const ::godot::StringName &p_name, const ::godot::Variant &p_property) { \
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return (bool(::godot::Wrapped::*)(const ::godot::StringName &p_name, const ::godot::Variant &p_property)) & m_class::_set; \
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} \
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\
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static bool (::godot::Wrapped::*_get_get())(const ::godot::StringName &p_name, ::godot::Variant &r_ret) const { \
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return (bool(::godot::Wrapped::*)(const ::godot::StringName &p_name, ::godot::Variant &r_ret) const) & m_class::_get; \
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} \
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\
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static void (::godot::Wrapped::*_get_get_property_list())(::godot::List<::godot::PropertyInfo> * p_list) const { \
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return (void(::godot::Wrapped::*)(::godot::List<::godot::PropertyInfo> * p_list) const) & m_class::_get_property_list; \
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} \
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\
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static bool (::godot::Wrapped::*_get_property_can_revert())(const ::godot::StringName &p_name) const { \
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return (bool(::godot::Wrapped::*)(const ::godot::StringName &p_name) const) & m_class::_property_can_revert; \
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} \
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\
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static bool (::godot::Wrapped::*_get_property_get_revert())(const ::godot::StringName &p_name, ::godot::Variant &) const { \
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return (bool(::godot::Wrapped::*)(const ::godot::StringName &p_name, ::godot::Variant &) const) & m_class::_property_get_revert; \
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} \
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\
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static void (::godot::Wrapped::*_get_validate_property())(::godot::PropertyInfo & p_property) const { \
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return (void(::godot::Wrapped::*)(::godot::PropertyInfo & p_property) const) & m_class::_validate_property; \
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} \
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\
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static ::godot::String (::godot::Wrapped::*_get_to_string())() const { \
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return (::godot::String(::godot::Wrapped::*)() const) & m_class::_to_string; \
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} \
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\
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template <typename T, typename B> \
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static void register_virtuals() { \
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m_inherits::register_virtuals<T, B>(); \
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} \
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\
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public: \
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typedef m_class self_type; \
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typedef m_inherits parent_type; \
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\
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static void initialize_class() { \
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static bool initialized = false; \
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if (initialized) { \
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return; \
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} \
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m_inherits::initialize_class(); \
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if (m_class::_get_bind_methods() != m_inherits::_get_bind_methods()) { \
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_bind_methods(); \
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m_inherits::register_virtuals<m_class, m_inherits>(); \
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} \
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initialized = true; \
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} \
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\
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static const ::godot::StringName &get_class_static() { \
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static const ::godot::StringName string_name = ::godot::StringName(#m_class); \
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return string_name; \
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} \
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\
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static const ::godot::StringName &get_parent_class_static() { \
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return m_inherits::get_class_static(); \
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} \
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\
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static void notification_bind(GDExtensionClassInstancePtr p_instance, int32_t p_what, GDExtensionBool p_reversed) { \
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if (p_instance && m_class::_get_notification()) { \
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if (!p_reversed) { \
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m_inherits::notification_bind(p_instance, p_what, p_reversed); \
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} \
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if (m_class::_get_notification() != m_inherits::_get_notification()) { \
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m_class *cls = reinterpret_cast<m_class *>(p_instance); \
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cls->_notification(p_what); \
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} \
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if (p_reversed) { \
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m_inherits::notification_bind(p_instance, p_what, p_reversed); \
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} \
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} \
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} \
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\
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static GDExtensionBool set_bind(GDExtensionClassInstancePtr p_instance, GDExtensionConstStringNamePtr p_name, GDExtensionConstVariantPtr p_value) { \
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if (p_instance) { \
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if (m_inherits::set_bind(p_instance, p_name, p_value)) { \
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return true; \
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} \
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if (m_class::_get_set() != m_inherits::_get_set()) { \
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m_class *cls = reinterpret_cast<m_class *>(p_instance); \
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return cls->_set(*reinterpret_cast<const ::godot::StringName *>(p_name), *reinterpret_cast<const ::godot::Variant *>(p_value)); \
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} \
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} \
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return false; \
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} \
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\
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static GDExtensionBool get_bind(GDExtensionClassInstancePtr p_instance, GDExtensionConstStringNamePtr p_name, GDExtensionVariantPtr r_ret) { \
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if (p_instance) { \
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if (m_inherits::get_bind(p_instance, p_name, r_ret)) { \
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return true; \
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} \
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if (m_class::_get_get() != m_inherits::_get_get()) { \
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m_class *cls = reinterpret_cast<m_class *>(p_instance); \
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return cls->_get(*reinterpret_cast<const ::godot::StringName *>(p_name), *reinterpret_cast<::godot::Variant *>(r_ret)); \
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} \
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} \
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return false; \
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} \
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\
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static inline bool has_get_property_list() { \
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return m_class::_get_get_property_list() && m_class::_get_get_property_list() != m_inherits::_get_get_property_list(); \
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} \
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\
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static const GDExtensionPropertyInfo *get_property_list_bind(GDExtensionClassInstancePtr p_instance, uint32_t *r_count) { \
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if (!p_instance) { \
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if (r_count) \
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*r_count = 0; \
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return nullptr; \
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} \
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m_class *cls = reinterpret_cast<m_class *>(p_instance); \
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::godot::List<::godot::PropertyInfo> &plist_cpp = cls->plist_owned; \
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ERR_FAIL_COND_V_MSG(!plist_cpp.is_empty(), nullptr, "Internal error, property list was not freed by engine!"); \
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cls->_get_property_list(&plist_cpp); \
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return ::godot::internal::create_c_property_list(plist_cpp, r_count); \
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} \
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\
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static void free_property_list_bind(GDExtensionClassInstancePtr p_instance, const GDExtensionPropertyInfo *p_list, uint32_t p_count) { \
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if (p_instance) { \
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m_class *cls = reinterpret_cast<m_class *>(p_instance); \
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cls->plist_owned.clear(); \
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::godot::internal::free_c_property_list(const_cast<GDExtensionPropertyInfo *>(p_list)); \
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} \
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} \
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\
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static GDExtensionBool property_can_revert_bind(GDExtensionClassInstancePtr p_instance, GDExtensionConstStringNamePtr p_name) { \
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if (p_instance && m_class::_get_property_can_revert()) { \
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if (m_class::_get_property_can_revert() != m_inherits::_get_property_can_revert()) { \
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m_class *cls = reinterpret_cast<m_class *>(p_instance); \
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return cls->_property_can_revert(*reinterpret_cast<const ::godot::StringName *>(p_name)); \
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} \
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return m_inherits::property_can_revert_bind(p_instance, p_name); \
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} \
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return false; \
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} \
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\
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static GDExtensionBool property_get_revert_bind(GDExtensionClassInstancePtr p_instance, GDExtensionConstStringNamePtr p_name, GDExtensionVariantPtr r_ret) { \
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if (p_instance && m_class::_get_property_get_revert()) { \
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if (m_class::_get_property_get_revert() != m_inherits::_get_property_get_revert()) { \
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m_class *cls = reinterpret_cast<m_class *>(p_instance); \
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return cls->_property_get_revert(*reinterpret_cast<const ::godot::StringName *>(p_name), *reinterpret_cast<::godot::Variant *>(r_ret)); \
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} \
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return m_inherits::property_get_revert_bind(p_instance, p_name, r_ret); \
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} \
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return false; \
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} \
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\
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static GDExtensionBool validate_property_bind(GDExtensionClassInstancePtr p_instance, GDExtensionPropertyInfo *p_property) { \
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bool ret = false; \
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if (p_instance && m_class::_get_validate_property()) { \
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ret = m_inherits::validate_property_bind(p_instance, p_property); \
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if (m_class::_get_validate_property() != m_inherits::_get_validate_property()) { \
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m_class *cls = reinterpret_cast<m_class *>(p_instance); \
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::godot::PropertyInfo info(p_property); \
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cls->_validate_property(info); \
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info._update(p_property); \
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return true; \
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} \
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} \
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return ret; \
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} \
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\
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static void to_string_bind(GDExtensionClassInstancePtr p_instance, GDExtensionBool *r_is_valid, GDExtensionStringPtr r_out) { \
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if (p_instance && m_class::_get_to_string()) { \
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if (m_class::_get_to_string() != m_inherits::_get_to_string()) { \
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m_class *cls = reinterpret_cast<m_class *>(p_instance); \
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*reinterpret_cast<::godot::String *>(r_out) = cls->_to_string(); \
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*r_is_valid = true; \
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return; \
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} \
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m_inherits::to_string_bind(p_instance, r_is_valid, r_out); \
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} \
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} \
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\
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static void free(void *data, GDExtensionClassInstancePtr ptr) { \
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if (ptr) { \
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m_class *cls = reinterpret_cast<m_class *>(ptr); \
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cls->~m_class(); \
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::godot::Memory::free_static(cls); \
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} \
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} \
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\
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static void *_gde_binding_create_callback(void *p_token, void *p_instance) { \
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return nullptr; \
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} \
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\
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static void _gde_binding_free_callback(void *p_token, void *p_instance, void *p_binding) { \
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} \
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\
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static GDExtensionBool _gde_binding_reference_callback(void *p_token, void *p_instance, GDExtensionBool p_reference) { \
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return true; \
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} \
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\
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static constexpr GDExtensionInstanceBindingCallbacks _gde_binding_callbacks = { \
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_gde_binding_create_callback, \
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_gde_binding_free_callback, \
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_gde_binding_reference_callback, \
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}; \
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\
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protected: \
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virtual void _notificationv(int32_t p_what, bool p_reversed = false) override { \
|
|
m_class::notification_bind(this, p_what, p_reversed); \
|
|
} \
|
|
\
|
|
private:
|
|
|
|
// Don't use this for your classes, use GDCLASS() instead.
|
|
#define GDEXTENSION_CLASS_ALIAS(m_class, m_alias_for, m_inherits) /******************************************************************************************************************/ \
|
|
private: \
|
|
inline static ::godot::internal::EngineClassRegistration<m_class> _gde_engine_class_registration_helper; \
|
|
void operator=(const m_class &p_rval) {} \
|
|
friend class ::godot::ClassDB; \
|
|
friend class ::godot::Wrapped; \
|
|
\
|
|
protected: \
|
|
m_class(const char *p_godot_class) : m_inherits(p_godot_class) {} \
|
|
m_class(GodotObject *p_godot_object) : m_inherits(p_godot_object) {} \
|
|
\
|
|
static void _bind_methods() {} \
|
|
\
|
|
static void (*_get_bind_methods())() { \
|
|
return nullptr; \
|
|
} \
|
|
\
|
|
static void (Wrapped::*_get_notification())(int) { \
|
|
return nullptr; \
|
|
} \
|
|
\
|
|
static bool (Wrapped::*_get_set())(const ::godot::StringName &p_name, const Variant &p_property) { \
|
|
return nullptr; \
|
|
} \
|
|
\
|
|
static bool (Wrapped::*_get_get())(const ::godot::StringName &p_name, Variant &r_ret) const { \
|
|
return nullptr; \
|
|
} \
|
|
\
|
|
static inline bool has_get_property_list() { \
|
|
return false; \
|
|
} \
|
|
\
|
|
static void (Wrapped::*_get_get_property_list())(List<PropertyInfo> * p_list) const { \
|
|
return nullptr; \
|
|
} \
|
|
\
|
|
static bool (Wrapped::*_get_property_can_revert())(const ::godot::StringName &p_name) const { \
|
|
return nullptr; \
|
|
} \
|
|
\
|
|
static bool (Wrapped::*_get_property_get_revert())(const ::godot::StringName &p_name, Variant &) const { \
|
|
return nullptr; \
|
|
} \
|
|
\
|
|
static void (Wrapped::*_get_validate_property())(::godot::PropertyInfo & p_property) const { \
|
|
return nullptr; \
|
|
} \
|
|
\
|
|
static String (Wrapped::*_get_to_string())() const { \
|
|
return nullptr; \
|
|
} \
|
|
\
|
|
public: \
|
|
typedef m_class self_type; \
|
|
typedef m_inherits parent_type; \
|
|
\
|
|
static void initialize_class() {} \
|
|
\
|
|
static const ::godot::StringName &get_class_static() { \
|
|
static const ::godot::StringName string_name = ::godot::StringName(#m_alias_for); \
|
|
return string_name; \
|
|
} \
|
|
\
|
|
static const ::godot::StringName &get_parent_class_static() { \
|
|
return m_inherits::get_class_static(); \
|
|
} \
|
|
\
|
|
static void free(void *data, GDExtensionClassInstancePtr ptr) { \
|
|
} \
|
|
\
|
|
static void *_gde_binding_create_callback(void *p_token, void *p_instance) { \
|
|
/* Do not call memnew here, we don't want the post-initializer to be called */ \
|
|
return new ("", "") m_class((GodotObject *)p_instance); \
|
|
} \
|
|
static void _gde_binding_free_callback(void *p_token, void *p_instance, void *p_binding) { \
|
|
/* Explicitly call the deconstructor to ensure proper lifecycle for non-trivial members */ \
|
|
reinterpret_cast<m_class *>(p_binding)->~m_class(); \
|
|
Memory::free_static(reinterpret_cast<m_class *>(p_binding)); \
|
|
} \
|
|
static GDExtensionBool _gde_binding_reference_callback(void *p_token, void *p_instance, GDExtensionBool p_reference) { \
|
|
return true; \
|
|
} \
|
|
static constexpr GDExtensionInstanceBindingCallbacks _gde_binding_callbacks = { \
|
|
_gde_binding_create_callback, \
|
|
_gde_binding_free_callback, \
|
|
_gde_binding_reference_callback, \
|
|
}; \
|
|
m_class() : m_class(#m_alias_for) {} \
|
|
\
|
|
private:
|
|
|
|
// Don't use this for your classes, use GDCLASS() instead.
|
|
#define GDEXTENSION_CLASS(m_class, m_inherits) GDEXTENSION_CLASS_ALIAS(m_class, m_class, m_inherits)
|
|
|
|
#define GDVIRTUAL_CALL(m_name, ...) _gdvirtual_##m_name##_call<false>(__VA_ARGS__)
|
|
#define GDVIRTUAL_CALL_PTR(m_obj, m_name, ...) m_obj->_gdvirtual_##m_name##_call<false>(__VA_ARGS__)
|
|
|
|
#define GDVIRTUAL_REQUIRED_CALL(m_name, ...) _gdvirtual_##m_name##_call<true>(__VA_ARGS__)
|
|
#define GDVIRTUAL_REQUIRED_CALL_PTR(m_obj, m_name, ...) m_obj->_gdvirtual_##m_name##_call<true>(__VA_ARGS__)
|
|
|
|
#define GDVIRTUAL_BIND(m_name, ...) ::godot::ClassDB::add_virtual_method(get_class_static(), _gdvirtual_##m_name##_get_method_info(), ::godot::snarray(__VA_ARGS__));
|
|
#define GDVIRTUAL_IS_OVERRIDDEN(m_name) _gdvirtual_##m_name##_overridden()
|
|
#define GDVIRTUAL_IS_OVERRIDDEN_PTR(m_obj, m_name) m_obj->_gdvirtual_##m_name##_overridden()
|
|
|
|
#endif // GODOT_WRAPPED_HPP
|