1*c697fb7fSBrooks Davis// Copyright 2011 Google Inc. 2*c697fb7fSBrooks Davis// All rights reserved. 3*c697fb7fSBrooks Davis// 4*c697fb7fSBrooks Davis// Redistribution and use in source and binary forms, with or without 5*c697fb7fSBrooks Davis// modification, are permitted provided that the following conditions are 6*c697fb7fSBrooks Davis// met: 7*c697fb7fSBrooks Davis// 8*c697fb7fSBrooks Davis// * Redistributions of source code must retain the above copyright 9*c697fb7fSBrooks Davis// notice, this list of conditions and the following disclaimer. 10*c697fb7fSBrooks Davis// * Redistributions in binary form must reproduce the above copyright 11*c697fb7fSBrooks Davis// notice, this list of conditions and the following disclaimer in the 12*c697fb7fSBrooks Davis// documentation and/or other materials provided with the distribution. 13*c697fb7fSBrooks Davis// * Neither the name of Google Inc. nor the names of its contributors 14*c697fb7fSBrooks Davis// may be used to endorse or promote products derived from this software 15*c697fb7fSBrooks Davis// without specific prior written permission. 16*c697fb7fSBrooks Davis// 17*c697fb7fSBrooks Davis// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18*c697fb7fSBrooks Davis// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19*c697fb7fSBrooks Davis// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20*c697fb7fSBrooks Davis// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21*c697fb7fSBrooks Davis// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22*c697fb7fSBrooks Davis// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23*c697fb7fSBrooks Davis// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24*c697fb7fSBrooks Davis// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25*c697fb7fSBrooks Davis// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26*c697fb7fSBrooks Davis// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27*c697fb7fSBrooks Davis// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28*c697fb7fSBrooks Davis 29*c697fb7fSBrooks Davis#if !defined(LUTOK_STATE_IPP) 30*c697fb7fSBrooks Davis#define LUTOK_STATE_IPP 31*c697fb7fSBrooks Davis 32*c697fb7fSBrooks Davis#include <lutok/state.hpp> 33*c697fb7fSBrooks Davis 34*c697fb7fSBrooks Davisnamespace lutok { 35*c697fb7fSBrooks Davis 36*c697fb7fSBrooks Davis 37*c697fb7fSBrooks Davis/// Wrapper around lua_newuserdata. 38*c697fb7fSBrooks Davis/// 39*c697fb7fSBrooks Davis/// This allocates an object as big as the size of the provided Type. 40*c697fb7fSBrooks Davis/// 41*c697fb7fSBrooks Davis/// \return The pointer to the allocated userdata object. 42*c697fb7fSBrooks Davis/// 43*c697fb7fSBrooks Davis/// \warning Terminates execution if there is not enough memory. 44*c697fb7fSBrooks Davistemplate< typename Type > 45*c697fb7fSBrooks DavisType* 46*c697fb7fSBrooks Davisstate::new_userdata(void) 47*c697fb7fSBrooks Davis{ 48*c697fb7fSBrooks Davis return static_cast< Type* >(new_userdata_voidp(sizeof(Type))); 49*c697fb7fSBrooks Davis} 50*c697fb7fSBrooks Davis 51*c697fb7fSBrooks Davis 52*c697fb7fSBrooks Davis/// Wrapper around lua_touserdata. 53*c697fb7fSBrooks Davis/// 54*c697fb7fSBrooks Davis/// \param index The second parameter to lua_touserdata. 55*c697fb7fSBrooks Davis/// 56*c697fb7fSBrooks Davis/// \return The return value of lua_touserdata. 57*c697fb7fSBrooks Davistemplate< typename Type > 58*c697fb7fSBrooks DavisType* 59*c697fb7fSBrooks Davisstate::to_userdata(const int index) 60*c697fb7fSBrooks Davis{ 61*c697fb7fSBrooks Davis return static_cast< Type* >(to_userdata_voidp(index)); 62*c697fb7fSBrooks Davis} 63*c697fb7fSBrooks Davis 64*c697fb7fSBrooks Davis 65*c697fb7fSBrooks Davis} // namespace lutok 66*c697fb7fSBrooks Davis 67*c697fb7fSBrooks Davis#endif // !defined(LUTOK_STATE_IPP) 68