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-rw-r--r--RenderScript/include/LuaFunctionBinding.h100
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diff --git a/RenderScript/include/LuaFunctionBinding.h b/RenderScript/include/LuaFunctionBinding.h
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--- a/RenderScript/include/LuaFunctionBinding.h
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-/* Copyright 2019 Diligent Graphics LLC
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * 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 OF ANY PROPRIETARY RIGHTS.
- *
- * In no event and under no legal theory, whether in tort (including negligence),
- * contract, or otherwise, unless required by applicable law (such as deliberate
- * and grossly negligent acts) or agreed to in writing, shall any Contributor be
- * liable for any damages, including any direct, indirect, special, incidental,
- * or consequential damages of any character arising as a result of this License or
- * out of the use or inability to use the software (including but not limited to damages
- * for loss of goodwill, work stoppage, computer failure or malfunction, or any and
- * all other commercial damages or losses), even if such Contributor has been advised
- * of the possibility of such damages.
- */
-
-#pragma once
-
-namespace Diligent
-{
- class LuaFunctionCallerBase
- {
- public:
- LuaFunctionCallerBase( lua_State *LuaState = nullptr ) :
- m_LuaState( LuaState )
- {
- };
-
- void SetLuaState( lua_State *LuaState )
- {
- m_LuaState = LuaState;
- }
-
- // We need these stubs to hide implementation details
- void PushFuncStub( lua_State *L, Bool Arg );
- void PushFuncStub( lua_State *L, Int32 Arg );
- void PushFuncStub( lua_State *L, Uint32 Arg );
- void PushFuncStub( lua_State *L, Int16 Arg );
- void PushFuncStub( lua_State *L, Uint16 Arg );
- void PushFuncStub( lua_State *L, Int8 Arg );
- void PushFuncStub( lua_State *L, Uint8 Arg );
- void PushFuncStub( lua_State *L, float Arg );
- void PushFuncStub( lua_State *L, const Char *Arg );
- void PushFuncStub( lua_State *L, const String &Arg );
-
- protected:
- void Run_internal( int NumArgs, const Char *FuncName );
-
- lua_State *m_LuaState;
- };
-
- class DummyPushFuncs
- {
- public:
- void PushFuncStub();
- };
-
- template<typename AdditionalPushFuncs = DummyPushFuncs>
- class LuaFunctionCaller : public LuaFunctionCallerBase, public AdditionalPushFuncs
- {
- public:
- void operator()()
- {
- operator()( nullptr );
- }
-
- template<typename... ArgsType>
- void operator()( const Char *FuncName, const ArgsType&... Args )
- {
- Run_internal( 0, FuncName, Args... );
- }
-
- // We need to make visible these parent-class definitions here
- using LuaFunctionCallerBase::PushFuncStub;
- using LuaFunctionCallerBase::Run_internal;
- using AdditionalPushFuncs::PushFuncStub;
-
- protected:
- template<typename ArgType>
- void Run_internal( int NumArgs, const Char *FuncName, const ArgType &Arg )
- {
- PushFuncStub( m_LuaState, Arg );
- Run_internal( NumArgs + 1, FuncName );
- }
-
- template<typename ArgType, typename... RestArgsType>
- void Run_internal( int NumArgs, const Char *FuncName, const ArgType &Arg, const RestArgsType&... RestArgs )
- {
- PushFuncStub( m_LuaState, Arg );
- Run_internal( NumArgs + 1, FuncName, RestArgs... ); // recursive call using pack expansion syntax
- }
- };
-}