122 lines
5.0 KiB
C++
122 lines
5.0 KiB
C++
// Copyright (C) 2017 Jérôme Leclercq
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// This file is part of the "Nazara Engine - Lua scripting module"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#pragma once
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#ifndef NAZARA_LUACLASS_HPP
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#define NAZARA_LUACLASS_HPP
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#include <Nazara/Prerequisites.hpp>
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#include <Nazara/Core/Algorithm.hpp>
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#include <Nazara/Core/String.hpp>
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#include <Nazara/Lua/LuaInstance.hpp>
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#include <functional>
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#include <map>
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#include <memory>
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#include <unordered_map>
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#include <vector>
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namespace Nz
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{
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template<class T>
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class LuaClass
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{
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template<class U>
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friend class LuaClass;
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public:
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using ClassFunc = std::function<int(LuaState& state, T& instance, std::size_t argumentCount)>;
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using ClassIndexFunc = std::function<bool(LuaState& state, T& instance)>;
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using ConstructorFunc = std::function<bool(LuaState& state, T* instance, std::size_t argumentCount)>;
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template<typename P> using ConvertToParent = std::function<P*(T*)>;
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using FinalizerFunc = std::function<bool(LuaState& state, T& instance)>;
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using StaticIndexFunc = std::function<bool(LuaState& state)>;
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using StaticFunc = std::function<int(LuaState& state)>;
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LuaClass() = default;
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LuaClass(const String& name);
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void BindDefaultConstructor();
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void BindMethod(const String& name, ClassFunc method);
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template<typename R, typename P, typename... Args, typename... DefArgs> std::enable_if_t<std::is_base_of<P, T>::value> BindMethod(const String& name, R(P::*func)(Args...), DefArgs&&... defArgs);
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template<typename R, typename P, typename... Args, typename... DefArgs> std::enable_if_t<std::is_base_of<P, T>::value> BindMethod(const String& name, R(P::*func)(Args...) const, DefArgs&&... defArgs);
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template<typename R, typename P, typename... Args, typename... DefArgs> std::enable_if_t<std::is_base_of<P, typename PointedType<T>::type>::value> BindMethod(const String& name, R(P::*func)(Args...), DefArgs&&... defArgs);
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template<typename R, typename P, typename... Args, typename... DefArgs> std::enable_if_t<std::is_base_of<P, typename PointedType<T>::type>::value> BindMethod(const String& name, R(P::*func)(Args...) const, DefArgs&&... defArgs);
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void BindStaticMethod(const String& name, StaticFunc func);
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template<typename R, typename... Args, typename... DefArgs> void BindStaticMethod(const String& name, R(*func)(Args...), DefArgs&&... defArgs);
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template<class P> void Inherit(LuaClass<P>& parent);
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template<class P> void Inherit(LuaClass<P>& parent, ConvertToParent<P> convertFunc);
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void Reset();
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void Reset(const String& name);
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void Register(LuaState& state);
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void PushGlobalTable(LuaState& state);
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void SetConstructor(ConstructorFunc constructor);
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void SetFinalizer(FinalizerFunc finalizer);
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void SetGetter(ClassIndexFunc getter);
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void SetSetter(ClassIndexFunc setter);
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void SetStaticGetter(StaticIndexFunc getter);
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void SetStaticSetter(StaticIndexFunc getter);
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private:
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template<typename U, bool HasDestructor>
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friend struct LuaClassImplFinalizerSetupProxy;
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int PushClassInfo(LuaState& state);
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void SetupConstructor(LuaState& state, int classInfoRef);
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void SetupDefaultToString(LuaState& state, int classInfoRef);
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void SetupFinalizer(LuaState& state, int classInfoRef);
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void SetupGetter(LuaState& state, LuaCFunction proxy, int classInfoRef);
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void SetupGlobalTable(LuaState& state, int classInfoRef);
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void SetupMetatable(LuaState& state, int classInfoRef);
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void SetupMethod(LuaState& state, LuaCFunction proxy, const String& name, std::size_t methodIndex, int classInfoRef);
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void SetupSetter(LuaState& state, LuaCFunction proxy, int classInfoRef);
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using ParentFunc = std::function<void(LuaState& state, T* instance)>;
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using InstanceGetter = std::function<T*(LuaState& state)>;
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struct ClassInfo
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{
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std::vector<ClassFunc> methods;
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std::vector<ParentFunc> parentGetters;
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std::vector<StaticFunc> staticMethods;
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std::unordered_map<String, InstanceGetter> instanceGetters;
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ClassIndexFunc getter;
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ClassIndexFunc setter;
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ConstructorFunc constructor;
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FinalizerFunc finalizer;
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StaticIndexFunc staticGetter;
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StaticIndexFunc staticSetter;
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String name;
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int globalTableRef = -1;
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};
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static int ConstructorProxy(lua_State* internalState);
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static int FinalizerProxy(lua_State* internalState);
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static int InfoDestructor(lua_State* internalState);
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static void Get(const std::shared_ptr<ClassInfo>& info, LuaState& state, T* instance);
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static int GetterProxy(lua_State* internalState);
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static int MethodProxy(lua_State* internalState);
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static int SetterProxy(lua_State* internalState);
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static int StaticGetterProxy(lua_State* internalState);
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static int StaticMethodProxy(lua_State* internalState);
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static int StaticSetterProxy(lua_State* internalState);
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static int ToStringProxy(lua_State* internalState);
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std::map<String, ClassFunc> m_methods;
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std::map<String, StaticFunc> m_staticMethods;
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std::shared_ptr<ClassInfo> m_info;
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};
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}
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#include <Nazara/Lua/LuaClass.inl>
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#endif // NAZARA_LUACLASS_HPP
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