/*************************************************************************/ /* native_extension_manager.cpp */ /*************************************************************************/ /* 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. */ /*************************************************************************/ #include "native_extension_manager.h" #include "core/io/file_access.h" NativeExtensionManager::LoadStatus NativeExtensionManager::load_extension(const String &p_path) { if (native_extension_map.has(p_path)) { return LOAD_STATUS_ALREADY_LOADED; } Ref extension = ResourceLoader::load(p_path); if (extension.is_null()) { return LOAD_STATUS_FAILED; } if (level >= 0) { //already initialized up to some level int32_t minimum_level = extension->get_minimum_library_initialization_level(); if (minimum_level < MIN(level, NativeExtension::INITIALIZATION_LEVEL_SCENE)) { return LOAD_STATUS_NEEDS_RESTART; } //initialize up to current level for (int32_t i = minimum_level; i < level; i++) { extension->initialize_library(NativeExtension::InitializationLevel(level)); } } native_extension_map[p_path] = extension; return LOAD_STATUS_OK; } NativeExtensionManager::LoadStatus NativeExtensionManager::reload_extension(const String &p_path) { return LOAD_STATUS_OK; //TODO } NativeExtensionManager::LoadStatus NativeExtensionManager::unload_extension(const String &p_path) { if (!native_extension_map.has(p_path)) { return LOAD_STATUS_NOT_LOADED; } Ref extension = native_extension_map[p_path]; if (level >= 0) { //already initialized up to some level int32_t minimum_level = extension->get_minimum_library_initialization_level(); if (minimum_level < MIN(level, NativeExtension::INITIALIZATION_LEVEL_SCENE)) { return LOAD_STATUS_NEEDS_RESTART; } //initialize up to current level for (int32_t i = level; i >= minimum_level; i--) { extension->deinitialize_library(NativeExtension::InitializationLevel(level)); } } native_extension_map.erase(p_path); return LOAD_STATUS_OK; } bool NativeExtensionManager::is_extension_loaded(const String &p_path) const { return native_extension_map.has(p_path); } Vector NativeExtensionManager::get_loaded_extensions() const { Vector ret; for (const KeyValue> &E : native_extension_map) { ret.push_back(E.key); } return ret; } Ref NativeExtensionManager::get_extension(const String &p_path) { Map>::Element *E = native_extension_map.find(p_path); ERR_FAIL_COND_V(!E, Ref()); return E->get(); } void NativeExtensionManager::initialize_extensions(NativeExtension::InitializationLevel p_level) { ERR_FAIL_COND(int32_t(p_level) - 1 != level); for (KeyValue> &E : native_extension_map) { E.value->initialize_library(p_level); } level = p_level; } void NativeExtensionManager::deinitialize_extensions(NativeExtension::InitializationLevel p_level) { ERR_FAIL_COND(int32_t(p_level) != level); for (KeyValue> &E : native_extension_map) { E.value->deinitialize_library(p_level); } level = int32_t(p_level) - 1; } void NativeExtensionManager::load_extensions() { FileAccessRef f = FileAccess::open(NativeExtension::get_extension_list_config_file(), FileAccess::READ); while (f && !f->eof_reached()) { String s = f->get_line().strip_edges(); if (s != String()) { LoadStatus err = load_extension(s); ERR_CONTINUE_MSG(err == LOAD_STATUS_FAILED, "Error loading extension: " + s); } } } NativeExtensionManager *NativeExtensionManager::get_singleton() { return singleton; } void NativeExtensionManager::_bind_methods() { ClassDB::bind_method(D_METHOD("load_extension", "path"), &NativeExtensionManager::load_extension); ClassDB::bind_method(D_METHOD("reload_extension", "path"), &NativeExtensionManager::reload_extension); ClassDB::bind_method(D_METHOD("unload_extension", "path"), &NativeExtensionManager::unload_extension); ClassDB::bind_method(D_METHOD("is_extension_loaded", "path"), &NativeExtensionManager::is_extension_loaded); ClassDB::bind_method(D_METHOD("get_loaded_extensions"), &NativeExtensionManager::get_loaded_extensions); ClassDB::bind_method(D_METHOD("get_extension", "path"), &NativeExtensionManager::get_extension); BIND_ENUM_CONSTANT(LOAD_STATUS_OK); BIND_ENUM_CONSTANT(LOAD_STATUS_FAILED); BIND_ENUM_CONSTANT(LOAD_STATUS_ALREADY_LOADED); BIND_ENUM_CONSTANT(LOAD_STATUS_NOT_LOADED); BIND_ENUM_CONSTANT(LOAD_STATUS_NEEDS_RESTART); } NativeExtensionManager *NativeExtensionManager::singleton = nullptr; NativeExtensionManager::NativeExtensionManager() { ERR_FAIL_COND(singleton != nullptr); singleton = this; }