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Diffstat (limited to 'core/extension/gdextension_manager.cpp')
| -rw-r--r-- | core/extension/gdextension_manager.cpp | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/core/extension/gdextension_manager.cpp b/core/extension/gdextension_manager.cpp new file mode 100644 index 0000000000..5bdde78793 --- /dev/null +++ b/core/extension/gdextension_manager.cpp @@ -0,0 +1,149 @@ +/*************************************************************************/ +/* gdextension_manager.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2022 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 "gdextension_manager.h" +#include "core/io/file_access.h" + +GDExtensionManager::LoadStatus GDExtensionManager::load_extension(const String &p_path) { + if (gdextension_map.has(p_path)) { + return LOAD_STATUS_ALREADY_LOADED; + } + Ref<GDExtension> 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, GDExtension::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(GDExtension::InitializationLevel(i)); + } + } + gdextension_map[p_path] = extension; + return LOAD_STATUS_OK; +} + +GDExtensionManager::LoadStatus GDExtensionManager::reload_extension(const String &p_path) { + return LOAD_STATUS_OK; //TODO +} +GDExtensionManager::LoadStatus GDExtensionManager::unload_extension(const String &p_path) { + if (!gdextension_map.has(p_path)) { + return LOAD_STATUS_NOT_LOADED; + } + + Ref<GDExtension> extension = gdextension_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, GDExtension::INITIALIZATION_LEVEL_SCENE)) { + return LOAD_STATUS_NEEDS_RESTART; + } + // Deinitialize down to current level. + for (int32_t i = level; i >= minimum_level; i--) { + extension->deinitialize_library(GDExtension::InitializationLevel(i)); + } + } + gdextension_map.erase(p_path); + return LOAD_STATUS_OK; +} + +bool GDExtensionManager::is_extension_loaded(const String &p_path) const { + return gdextension_map.has(p_path); +} + +Vector<String> GDExtensionManager::get_loaded_extensions() const { + Vector<String> ret; + for (const KeyValue<String, Ref<GDExtension>> &E : gdextension_map) { + ret.push_back(E.key); + } + return ret; +} +Ref<GDExtension> GDExtensionManager::get_extension(const String &p_path) { + HashMap<String, Ref<GDExtension>>::Iterator E = gdextension_map.find(p_path); + ERR_FAIL_COND_V(!E, Ref<GDExtension>()); + return E->value; +} + +void GDExtensionManager::initialize_extensions(GDExtension::InitializationLevel p_level) { + ERR_FAIL_COND(int32_t(p_level) - 1 != level); + for (KeyValue<String, Ref<GDExtension>> &E : gdextension_map) { + E.value->initialize_library(p_level); + } + level = p_level; +} + +void GDExtensionManager::deinitialize_extensions(GDExtension::InitializationLevel p_level) { + ERR_FAIL_COND(int32_t(p_level) != level); + for (KeyValue<String, Ref<GDExtension>> &E : gdextension_map) { + E.value->deinitialize_library(p_level); + } + level = int32_t(p_level) - 1; +} + +void GDExtensionManager::load_extensions() { + Ref<FileAccess> f = FileAccess::open(GDExtension::get_extension_list_config_file(), FileAccess::READ); + while (f.is_valid() && !f->eof_reached()) { + String s = f->get_line().strip_edges(); + if (!s.is_empty()) { + LoadStatus err = load_extension(s); + ERR_CONTINUE_MSG(err == LOAD_STATUS_FAILED, "Error loading extension: " + s); + } + } +} + +GDExtensionManager *GDExtensionManager::get_singleton() { + return singleton; +} +void GDExtensionManager::_bind_methods() { + ClassDB::bind_method(D_METHOD("load_extension", "path"), &GDExtensionManager::load_extension); + ClassDB::bind_method(D_METHOD("reload_extension", "path"), &GDExtensionManager::reload_extension); + ClassDB::bind_method(D_METHOD("unload_extension", "path"), &GDExtensionManager::unload_extension); + ClassDB::bind_method(D_METHOD("is_extension_loaded", "path"), &GDExtensionManager::is_extension_loaded); + + ClassDB::bind_method(D_METHOD("get_loaded_extensions"), &GDExtensionManager::get_loaded_extensions); + ClassDB::bind_method(D_METHOD("get_extension", "path"), &GDExtensionManager::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); +} + +GDExtensionManager *GDExtensionManager::singleton = nullptr; + +GDExtensionManager::GDExtensionManager() { + ERR_FAIL_COND(singleton != nullptr); + singleton = this; +} |