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/* Copyright 2015-2019 Egor Yusov
*
* 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.
*/
#include "pch.h"
#include "LuaBindings.h"
#include "GraphicsAccessories.h"
using namespace std;
namespace Diligent
{
template<typename Type>
Type ReadIntValueFromLua( lua_State *L, int Index )
{
CheckType( L, Index, LUA_TNUMBER );
int isnum;
auto Val = lua_tonumberx( L, Index, &isnum );
if( !isnum )
{
auto Str = lua_tostring( L, Index );
SCRIPT_PARSING_ERROR( L, "Failed to convert parameter ", Str, " to int" );
}
if( static_cast<Type>(Val) != Val )
{
SCRIPT_PARSING_ERROR( L, "Parameter value (", Val, ") is not integer. Truncating to int" );
}
return static_cast<Type>(Val);
}
template<typename Type>
Type ReadFPValueFromLua( lua_State *L, int Index )
{
CheckType( L, Index, LUA_TNUMBER );
int isnum;
auto Val = lua_tonumberx( L, Index, &isnum );
if( !isnum )
{
auto Str = lua_tostring( L, Index );
SCRIPT_PARSING_ERROR( L, "Failed to convert parameter ", Str, " to floating point" );
}
return static_cast<Type>(Val);
}
template<>
int ReadValueFromLua<int>( lua_State *L, int Index )
{
return ReadIntValueFromLua<int>( L, Index );
}
template<>
double ReadValueFromLua<double>( lua_State *L, int Index )
{
return ReadFPValueFromLua<double>( L, Index );
}
template<>
float ReadValueFromLua<float>( lua_State *L, int Index )
{
return ReadFPValueFromLua<float>( L, Index );
}
template<>
String ReadValueFromLua<String>( lua_State *L, int Index )
{
CheckType( L, Index, LUA_TSTRING );
auto Str = lua_tostring( L, Index );
return String( Str );
}
template<>
const Char* ReadValueFromLua<const Char*>( lua_State *L, int Index )
{
CheckType( L, Index, LUA_TSTRING );
auto Str = lua_tostring( L, Index );
return Str;
}
template<>
Bool ReadValueFromLua<Bool>( lua_State *L, int Index )
{
CheckType( L, Index, LUA_TBOOLEAN );
auto Val = lua_toboolean( L, Index );
return Val ? True : False;
}
template<>
Uint32 ReadValueFromLua<Uint32>( lua_State *L, int Index )
{
return ReadIntValueFromLua<Uint32>( L, Index );
}
template<>
Uint8 ReadValueFromLua<Uint8>( lua_State *L, int Index )
{
return ReadIntValueFromLua<Uint8>( L, Index );
}
template<>
void PushValue<double>( lua_State *L, double Val )
{
lua_pushnumber( L, Val );
}
template<>
void PushValue<const float&>( lua_State *L, const float& Val )
{
lua_pushnumber( L, Val );
}
template<>
void PushValue<const Int32&>( lua_State *L, const Int32& Val )
{
lua_pushnumber( L, Val );
}
template<>
void PushValue<const Uint8&>( lua_State *L, const Uint8& Val )
{
lua_pushnumber( L, Val );
}
template<>
void PushValue<const Uint32&>( lua_State *L, const Uint32& Val )
{
lua_pushnumber( L, Val );
}
template<>
void PushValue<const Char*>( lua_State *L, const Char* Val )
{
lua_pushstring( L, Val );
}
template<> void PushValue<const Char* const&>( lua_State *L, const Char* const& Val )
{
lua_pushstring( L, Val );
}
template<>
void PushValue<const String&>( lua_State *L, const String& Val )
{
lua_pushstring( L, Val.c_str() );
}
template<>
void PushValue<bool>( lua_State *L, bool Val )
{
lua_pushboolean( L, Val );
}
template<>
void PushValue<const bool &>( lua_State *L, const bool &Val )
{
lua_pushboolean( L, Val );
}
template<VALUE_TYPE VTType>
void ParseNumericArray( lua_State *L, int StackIndex, std::vector< Uint8 >& RawData )
{
typedef typename VALUE_TYPE2CType<VTType>::CType ElemType;
CheckType( L, StackIndex, LUA_TTABLE );
auto ArraySize = lua_rawlen( L, StackIndex );
auto ElemSize = sizeof( ElemType );
RawData.reserve( ArraySize * ElemSize );
ParseLuaArray( L, StackIndex, &RawData, [ &]( void* pBasePointer, int StackIndex, int NewArrayIndex )
{
VERIFY( pBasePointer == &RawData, "Sanity check failed" );
auto CurrIndex = RawData.size() / ElemSize;
if(static_cast<int>(CurrIndex) != NewArrayIndex - 1 )
SCRIPT_PARSING_ERROR( L, "Explicit array indices are not allowed in array initialization. Provided index ", NewArrayIndex - 1, " conflicts with actual index ", CurrIndex, "." );
RawData.resize( (CurrIndex + 1) * ElemSize );
auto CurrValue = ReadValueFromLua<double>( L, StackIndex );
reinterpret_cast<ElemType&>(RawData[CurrIndex * ElemSize]) = static_cast<ElemType>(CurrValue);
} );
}
NumericArrayLoader::NumericArrayLoader() :
m_ValueTypeBinder( 0, "VALUE_TYPE", m_ValueTypeEnumMapping )
{
DEFINE_ENUM_ELEMENT_MAPPING( m_ValueTypeEnumMapping, VT_INT8 );
DEFINE_ENUM_ELEMENT_MAPPING( m_ValueTypeEnumMapping, VT_INT16 );
DEFINE_ENUM_ELEMENT_MAPPING( m_ValueTypeEnumMapping, VT_INT32 );
DEFINE_ENUM_ELEMENT_MAPPING( m_ValueTypeEnumMapping, VT_UINT8 );
DEFINE_ENUM_ELEMENT_MAPPING( m_ValueTypeEnumMapping, VT_UINT16 );
DEFINE_ENUM_ELEMENT_MAPPING( m_ValueTypeEnumMapping, VT_UINT32 );
DEFINE_ENUM_ELEMENT_MAPPING( m_ValueTypeEnumMapping, VT_FLOAT16 );
DEFINE_ENUM_ELEMENT_MAPPING( m_ValueTypeEnumMapping, VT_FLOAT32 );
VERIFY( m_ValueTypeEnumMapping.m_Str2ValMap.size() == VT_NUM_TYPES - 1,
"Unexpected map size. Did you update VALUE_TYPE enum?" );
VERIFY( m_ValueTypeEnumMapping.m_Val2StrMap.size() == VT_NUM_TYPES - 1,
"Unexpected map size. Did you update VALUE_TYPE enum?" );
m_ParseFuncJumpTbl.insert( make_pair( VT_INT8, ParseNumericArray<VT_INT8> ) );
m_ParseFuncJumpTbl.insert( make_pair( VT_INT16, ParseNumericArray<VT_INT16> ) );
m_ParseFuncJumpTbl.insert( make_pair( VT_INT32, ParseNumericArray<VT_INT32> ) );
m_ParseFuncJumpTbl.insert( make_pair( VT_UINT8, ParseNumericArray<VT_UINT8> ) );
m_ParseFuncJumpTbl.insert( make_pair( VT_UINT16, ParseNumericArray<VT_UINT16> ) );
m_ParseFuncJumpTbl.insert( make_pair( VT_UINT32, ParseNumericArray<VT_UINT32> ) );
//m_ParseFuncJumpTbl.insert( make_pair( VT_FLOAT16, ParseNumericArray<VT_FLOAT16> ) );
m_ParseFuncJumpTbl.insert( make_pair( VT_FLOAT32, ParseNumericArray<VT_FLOAT32> ) );
};
void NumericArrayLoader::LoadArray( lua_State *L, int StackIndex, std::vector< Uint8 >& RawData )
{
VALUE_TYPE ValueType;
m_ValueTypeBinder.SetValue( L, StackIndex-1, &ValueType );
auto it = m_ParseFuncJumpTbl.find( ValueType );
if( it != m_ParseFuncJumpTbl.end() )
{
it->second( L, StackIndex, RawData );
}
else
{
SCRIPT_PARSING_ERROR( L, "No method to parse array of value VALUE_TYPE==", ValueType);
}
}
// Special version of luaL_testudata() which takes an array of allowed metatables
void *luaL_testudata( lua_State *L, int ud, const std::vector<String> &MetatableNames )
{
void *p = lua_touserdata( L, ud );
if( p != nullptr )
{
// value is a userdata?
if( lua_getmetatable( L, ud ) ) // -0 | +(0|1) -> +(0|1)
{
// does it have a metatable?
bool bMatchingMTFound = false;
for( auto mtname = MetatableNames.begin(); mtname != MetatableNames.end() && !bMatchingMTFound; ++mtname )
{
// get correct metatable
luaL_getmetatable( L, mtname->c_str() ); // -0 | +1 -> +1
if( lua_rawequal( L, -1, -2 ) ) // are the same?
bMatchingMTFound = true;
// pop correct metatable
lua_pop( L, 1 ); // -1 | +0 -> -1
}
// pop user metatable
lua_pop( L, 1 ); // -1 | +0 -> -1
return bMatchingMTFound ? p : nullptr;
}
}
return nullptr; // value is not a userdata with a metatable
}
}
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