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Implement native extension system

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* Deprecates GDNative in favor of a simpler, lower level interface.
* New extension system allows registering core engine classes.
* Simple header interface in gdnative_interace.h
This commit is contained in:
reduz 2021-06-19 12:58:49 -03:00
parent c8444c3ee0
commit b1d15c51bc
50 changed files with 3316 additions and 224 deletions
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core/extension/native_extension.h Normal file
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/*************************************************************************/
/* native_extension.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 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 NATIVE_EXTENSION_H
#define NATIVE_EXTENSION_H
#include "core/extension/gdnative_interface.h"
#include "core/io/resource_loader.h"
#include "core/object/ref_counted.h"
class NativeExtension : public RefCounted {
GDCLASS(NativeExtension, RefCounted)
void *library = nullptr; // pointer if valid,
struct Extension {
ObjectNativeExtension native_extension;
};
Map<StringName, Extension> extension_classes;
static void _register_extension_class(const GDNativeExtensionClassLibraryPtr p_library, const char *p_class_name, const char *p_parent_class_name, const GDNativeExtensionClassCreationInfo *p_extension_funcs);
static void _register_extension_class_method(const GDNativeExtensionClassLibraryPtr p_library, const char *p_class_name, const GDNativeExtensionClassMethodInfo *p_method_info);
static void _register_extension_class_integer_constant(const GDNativeExtensionClassLibraryPtr p_library, const char *p_class_name, const char *p_enum_name, const char *p_constant_name, uint32_t p_constant_value);
static void _register_extension_class_property(const GDNativeExtensionClassLibraryPtr p_library, const char *p_class_name, const GDNativePropertyInfo *p_info, const char *p_setter, const char *p_getter);
static void _register_extension_class_signal(const GDNativeExtensionClassLibraryPtr p_library, const char *p_class_name, const char *p_signal_name, const GDNativePropertyInfo *p_argument_info, GDNativeInt p_argument_count);
static void _unregister_extension_class(const GDNativeExtensionClassLibraryPtr p_library, const char *p_class_name);
GDNativeInitialization initialization;
int32_t level_initialized = -1;
protected:
static void _bind_methods();
public:
Error open_library(const String &p_path, const String &p_entry_symbol);
void close_library();
enum InitializationLevel {
INITIALIZATION_LEVEL_CORE,
INITIALIZATION_LEVEL_SERVERS,
INITIALIZATION_LEVEL_SCENE,
INITIALIZATION_LEVEL_EDITOR,
};
bool is_library_open() const;
InitializationLevel get_minimum_library_initialization_level() const;
void initialize_library(InitializationLevel p_level);
void deinitialize_library(InitializationLevel p_level);
static void initialize_native_extensions();
NativeExtension();
~NativeExtension();
};
VARIANT_ENUM_CAST(NativeExtension::InitializationLevel)
class NativeExtensionResourceLoader : public ResourceFormatLoader {
public:
virtual RES load(const String &p_path, const String &p_original_path, Error *r_error, bool p_use_sub_threads = false, float *r_progress = nullptr, CacheMode p_cache_mode = CACHE_MODE_REUSE);
virtual void get_recognized_extensions(List<String> *p_extensions) const;
virtual bool handles_type(const String &p_type) const;
virtual String get_resource_type(const String &p_path) const;
};
#endif // NATIVEEXTENSION_H