mirror of
https://github.com/quizhizhe/LiteLoaderBDS-1.16.40.git
synced 2025-06-07 20:28:10 +00:00
276 lines
8.7 KiB
C++
276 lines
8.7 KiB
C++
/*
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* Tencent is pleased to support the open source community by making ScriptX available.
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* Copyright (C) 2021 THL A29 Limited, a Tencent company. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <unordered_map>
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#include "../../src/Engine.h"
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#include "../../src/Exception.h"
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#include "../../src/Native.h"
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#include "../../src/utils/GlobalWeakBookkeeping.hpp"
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#include "../../src/utils/MessageQueue.h"
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#include "LuaHelper.h"
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namespace script::lua_backend {
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class LuaByteBufferDelegate;
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class LuaEngine : public ScriptEngine {
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private:
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// any pointer is fine, just need to be unique
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static const void* const kLuaTableNativeThisPtrToken_;
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static const void* const kLuaTableNativeClassDefinePtrToken_;
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static const void* const kLuaNativeConstructorMarker_;
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static const void* const kLuaNativeInternalStorageToken_;
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static const void* const kLuaBuiltinDefinedClassMetaDataToken_;
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static const void* const kLuaGlobalRegistryToken_;
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static const void* const kLuaWeakRegistryToken_;
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static constexpr auto kIsInstanceBuiltInFunctionName = "isInstance";
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static constexpr auto kMetaTableBuiltInInstanceFunctions = "instanceFunction";
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std::mutex lock_;
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std::shared_ptr<::script::utils::MessageQueue> messageQueue_;
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size_t globalIdCounter_ = 1;
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std::unordered_map<const void*, Global<Object>> nativeDefineRegistry_;
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::script::internal::GlobalWeakBookkeeping globalWeakBookkeeping_;
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std::unique_ptr<LuaByteBufferDelegate> byteBufferDelegate_;
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size_t globalRefCount_ = 0;
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size_t weakRefCount_ = 0;
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bool isDestroying_ = false;
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lua_State* lua_ = nullptr;
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public:
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explicit LuaEngine(std::shared_ptr<::script::utils::MessageQueue> queue = {},
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const std::function<lua_State*()>& luaStateFactory = {},
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std::unique_ptr<LuaByteBufferDelegate> byteBufferDelegate = {});
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SCRIPTX_DISALLOW_COPY_AND_MOVE(LuaEngine);
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void destroy() override;
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bool isDestroying() const override;
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Local<Value> get(const Local<String>& key) override;
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void set(const Local<String>& key, const Local<Value>& value) override;
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using ScriptEngine::set;
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Local<Value> eval(const Local<String>& script, const Local<Value>& sourceFile);
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Local<Value> eval(const Local<String>& script, const Local<String>& sourceFile) override;
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Local<Value> eval(const Local<String>& script) override;
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using ScriptEngine::eval;
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std::shared_ptr<utils::MessageQueue> messageQueue() override;
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void gc() override;
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size_t getHeapSize() override;
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void adjustAssociatedMemory(int64_t count) override;
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ScriptLanguage getLanguageType() override;
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std::string getEngineVersion() override;
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protected:
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~LuaEngine() override;
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private:
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void initGlobalRegistry();
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Local<Value> get(const char* key);
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void set(const char* key, const Local<Value>& value);
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size_t globalIdCounter();
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size_t putGlobalOrWeakTable(const Local<Value>& localReference, const void* registryToken);
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void removeGlobalOrWeakTable(size_t id, const void* registryToken);
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Local<Value> getGlobalOrWeakTable(size_t index, const void* registryToken) const;
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template <typename T>
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void registerNativeClassImpl(const ClassDefine<T>* classDefine);
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static const ClassDefine<void>& builtInFunctions();
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void registerStaticDefine(const internal::StaticDefine& staticDefine, int table, int metaTable);
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void defineStaticFunctions(const internal::StaticDefine& staticDefine, int tableIndex);
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void defineStaticProperties(const internal::StaticDefine& staticDefine, int tableIndex, int i);
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// [0, 0, -]
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template <typename T>
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void registerInstanceDefine(const ClassDefine<T>& classDefine, int table, int staticMeta);
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// [0, 0, -]
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template <typename T>
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void defineInstanceConstructor(const ClassDefine<T>& classDefine, int instanceMeta,
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int staticMeta) const;
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template <typename T>
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void defineInstanceFunctions(const ClassDefine<T>& classDefine, int instanceFunctionTable) const;
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template <typename T>
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void defineInstanceProperties(const ClassDefine<T>& classDefine, int instanceMeta,
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int instanceFunction) const;
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// [0, 0, -]
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void setupMetaTableForProperties(int metaIndex, int instanceFunction, int getterRegistryIndex,
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int setterRegistryIndex) const;
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using PushFunctionCallback = Local<Value> (*)(lua_State*, void*, const Arguments&);
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/**
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* push a lua function, the data will not be collected automatically.
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* [0, +1, -]
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*/
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void pushFunction(const void* data, PushFunctionCallback callable);
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template <typename T>
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Local<Object> newNativeClassImpl(const ClassDefine<T>* classDefine,
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const std::initializer_list<Local<Value>>& args) {
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return newNativeClassImpl(classDefine, args.size(), args.begin());
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}
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template <typename T>
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Local<Object> newNativeClassImpl(const ClassDefine<T>* classDefine,
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const std::vector<Local<Value>>& args) {
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return newNativeClassImpl(classDefine, args.size(), args.data());
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}
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template <typename T>
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Local<Object> newNativeClassImpl(const ClassDefine<T>* classDefine, size_t size,
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const Local<Value>* ptr);
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template <typename T>
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bool isInstanceOfImpl(const Local<Value>& value, const ClassDefine<T>* classDefine);
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template <typename T>
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T* getNativeInstanceImpl(const Local<Value>& value, const ClassDefine<T>* classDefine);
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static Local<Value> getClassMetaTable(lua_State* lua, int classIndex);
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static bool isInstanceOf(lua_State* lua, int classIndex, int selfIndex);
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static bool isInstanceOf(lua_State* lua, const void* classDefine, int selfIndex);
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static void* getNativeThis(lua_State* lua, const void* classDefine, int selfIndex);
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using PushInstanceFunctionCallback = Local<Value> (*)(lua_State*, void*, void*, const Arguments&);
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/**
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* [0, +1, -]
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*/
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void pushInstanceFunction(const void* data, const void* classDefine,
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PushInstanceFunctionCallback callable) const;
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public:
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template <typename T, typename... Args>
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static T make(Args&&... args) {
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return T(std::forward<Args>(args)...);
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}
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template <typename LocalRef>
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static int localRefIndex(const LocalRef& ref) {
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return ref.val_;
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}
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static Arguments makeArguments(LuaEngine* engine, int stackBase, size_t paramCount,
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bool isInstanceFunc);
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private:
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template <typename T>
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friend class ::script::Local;
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template <typename T>
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friend class ::script::Global;
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template <typename T>
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friend class ::script::Weak;
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friend class ::script::Object;
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friend class ::script::Array;
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friend class ::script::Function;
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friend class ::script::ByteBuffer;
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friend class ::script::ScriptEngine;
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friend class ::script::Exception;
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friend class ::script::Arguments;
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friend class ::script::ScriptClass;
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friend class StackFrameScopeImpl;
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friend class EngineScopeImpl;
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friend class ExitEngineScopeImpl;
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friend class LuaByteBufferImpl;
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friend lua_State* currentLua();
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friend void pushValue(lua_State* lua, const Local<Value>& local);
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template <typename It>
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friend void pushValues(lua_State* lua, size_t count, It begin);
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template <typename Ref>
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static auto& refVal(Ref* ref) {
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return ref->val_;
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}
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friend struct LuaBookKeepFetcher;
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friend struct ::script::lua_interop;
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};
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class LuaByteBufferDelegate {
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public:
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LuaByteBufferDelegate() = default;
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virtual ~LuaByteBufferDelegate() = default;
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SCRIPTX_DISALLOW_COPY_AND_MOVE(LuaByteBufferDelegate);
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virtual void init(LuaEngine* engine) = 0;
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/**
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* create a new byte buffer object, return it's index on the stack
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*/
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virtual Local<Value> newByteBuffer(LuaEngine* engine, std::shared_ptr<void> nativeBuffer,
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size_t size) = 0;
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/**
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* get the underlying shared_ptr
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*/
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virtual std::shared_ptr<void> getByteBuffer(LuaEngine* engine,
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const Local<Value>& byteBuffer) = 0;
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virtual size_t getByteBufferSize(LuaEngine* engine, const Local<Value>& byteBuffer) = 0;
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virtual bool isByteBuffer(LuaEngine* engine, const Local<Value>& byteBuffer) = 0;
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};
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} // namespace script::lua_backend
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