131 lines
6 KiB
C++
131 lines
6 KiB
C++
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/*************************************************************************/
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/* native_extension_manager.cpp */
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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) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 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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#include "native_extension_manager.h"
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NativeExtensionManager::LoadStatus NativeExtensionManager::load_extension(const String &p_path) {
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if (native_extension_map.has(p_path)) {
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return LOAD_STATUS_ALREADY_LOADED;
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}
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Ref<NativeExtension> extension = ResourceLoader::load(p_path);
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if (extension.is_null()) {
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return LOAD_STATUS_FAILED;
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}
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if (level >= 0) { //already initialized up to some level
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int32_t minimum_level = extension->get_minimum_library_initialization_level();
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if (minimum_level < MIN(level, NativeExtension::INITIALIZATION_LEVEL_SCENE)) {
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return LOAD_STATUS_NEEDS_RESTART;
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}
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//initialize up to current level
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for (int32_t i = minimum_level; i < level; i++) {
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extension->initialize_library(NativeExtension::InitializationLevel(level));
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}
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}
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native_extension_map[p_path] = extension;
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return LOAD_STATUS_OK;
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}
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NativeExtensionManager::LoadStatus NativeExtensionManager::reload_extension(const String &p_path) {
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return LOAD_STATUS_OK; //TODO
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}
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NativeExtensionManager::LoadStatus NativeExtensionManager::unload_extension(const String &p_path) {
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if (!native_extension_map.has(p_path)) {
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return LOAD_STATUS_NOT_LOADED;
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}
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Ref<NativeExtension> extension = native_extension_map[p_path];
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if (level >= 0) { //already initialized up to some level
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int32_t minimum_level = extension->get_minimum_library_initialization_level();
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if (minimum_level < MIN(level, NativeExtension::INITIALIZATION_LEVEL_SCENE)) {
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return LOAD_STATUS_NEEDS_RESTART;
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}
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//initialize up to current level
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for (int32_t i = level; i >= minimum_level; i--) {
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extension->deinitialize_library(NativeExtension::InitializationLevel(level));
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}
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}
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native_extension_map.erase(p_path);
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return LOAD_STATUS_OK;
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}
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Vector<String> NativeExtensionManager::get_loaded_extensions() const {
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Vector<String> ret;
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for (const Map<String, Ref<NativeExtension>>::Element *E = native_extension_map.front(); E; E = E->next()) {
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ret.push_back(E->key());
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}
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return ret;
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}
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Ref<NativeExtension> NativeExtensionManager::get_extension(const String &p_path) {
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Map<String, Ref<NativeExtension>>::Element *E = native_extension_map.find(p_path);
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ERR_FAIL_COND_V(!E, Ref<NativeExtension>());
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return E->get();
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}
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void NativeExtensionManager::initialize_extensions(NativeExtension::InitializationLevel p_level) {
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ERR_FAIL_COND(int32_t(p_level) - 1 != level);
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for (Map<String, Ref<NativeExtension>>::Element *E = native_extension_map.front(); E; E = E->next()) {
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E->get()->initialize_library(p_level);
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}
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level = p_level;
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}
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void NativeExtensionManager::deinitialize_extensions(NativeExtension::InitializationLevel p_level) {
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ERR_FAIL_COND(int32_t(p_level) != level);
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for (Map<String, Ref<NativeExtension>>::Element *E = native_extension_map.front(); E; E = E->next()) {
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E->get()->deinitialize_library(p_level);
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}
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level = int32_t(p_level) - 1;
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}
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NativeExtensionManager *NativeExtensionManager::get_singleton() {
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return singleton;
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}
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void NativeExtensionManager::_bind_methods() {
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ClassDB::bind_method(D_METHOD("load_extension", "path"), &NativeExtensionManager::load_extension);
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ClassDB::bind_method(D_METHOD("reload_extension", "path"), &NativeExtensionManager::reload_extension);
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ClassDB::bind_method(D_METHOD("unload_extension", "path"), &NativeExtensionManager::unload_extension);
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ClassDB::bind_method(D_METHOD("get_loaded_extensions"), &NativeExtensionManager::get_loaded_extensions);
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ClassDB::bind_method(D_METHOD("get_extension", "path"), &NativeExtensionManager::get_extension);
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BIND_ENUM_CONSTANT(LOAD_STATUS_OK);
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BIND_ENUM_CONSTANT(LOAD_STATUS_FAILED);
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BIND_ENUM_CONSTANT(LOAD_STATUS_ALREADY_LOADED);
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BIND_ENUM_CONSTANT(LOAD_STATUS_NOT_LOADED);
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BIND_ENUM_CONSTANT(LOAD_STATUS_NEEDS_RESTART);
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}
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NativeExtensionManager *NativeExtensionManager::singleton = nullptr;
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NativeExtensionManager::NativeExtensionManager() {
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ERR_FAIL_COND(singleton != nullptr);
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singleton = this;
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}
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