git://gcc.gnu.org / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| 1476e59c PC |
1 | // Move, forward and identity implementation for C++0x -*- C++ -*- |
| 2 | ||
| 3 | // Copyright (C) 2007 Free Software Foundation, Inc. | |
| 4 | // | |
| 5 | // This file is part of the GNU ISO C++ Library. This library is free | |
| 6 | // software; you can redistribute it and/or modify it under the | |
| 7 | // terms of the GNU General Public License as published by the | |
| 8 | // Free Software Foundation; either version 2, or (at your option) | |
| 9 | // any later version. | |
| 10 | ||
| 11 | // This library is distributed in the hope that it will be useful, | |
| 12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | // GNU General Public License for more details. | |
| 15 | ||
| 16 | // You should have received a copy of the GNU General Public License along | |
| 17 | // with this library; see the file COPYING. If not, write to the Free | |
| 18 | // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, | |
| 19 | // USA. | |
| 20 | ||
| 21 | // As a special exception, you may use this file as part of a free software | |
| 22 | // library without restriction. Specifically, if other files instantiate | |
| 23 | // templates or use macros or inline functions from this file, or you compile | |
| 24 | // this file and link it with other files to produce an executable, this | |
| 25 | // file does not by itself cause the resulting executable to be covered by | |
| 26 | // the GNU General Public License. This exception does not however | |
| 27 | // invalidate any other reasons why the executable file might be covered by | |
| 28 | // the GNU General Public License. | |
| 29 | ||
| 30 | /** @file stl_move.h | |
| 31 | * This is an internal header file, included by other library headers. | |
| 32 | * You should not attempt to use it directly. | |
| 33 | */ | |
| 34 | ||
| 35 | #ifndef _STL_MOVE_H | |
| 36 | #define _STL_MOVE_H 1 | |
| 37 | ||
| 38 | #ifdef __GXX_EXPERIMENTAL_CXX0X__ | |
| 39 | #include <type_traits> | |
| 40 | ||
| 41 | _GLIBCXX_BEGIN_NAMESPACE(std) | |
| 42 | ||
| 43 | // 20.2.2, forward/move | |
| 44 | template<typename _Tp> | |
| 45 | struct identity | |
| 46 | { | |
| 47 | typedef _Tp type; | |
| 48 | }; | |
| 49 | ||
| 50 | template<typename _Tp> | |
| 51 | inline _Tp&& | |
| 52 | forward(typename std::identity<_Tp>::type&& __t) | |
| 53 | { return __t; } | |
| 54 | ||
| 55 | template<typename _Tp> | |
| 56 | inline typename std::remove_reference<_Tp>::type&& | |
| 57 | move(_Tp&& __t) | |
| 58 | { return __t; } | |
| 59 | ||
| 60 | _GLIBCXX_END_NAMESPACE | |
| 61 | ||
| 62 | #endif | |
| 63 | ||
| 64 | #endif /* _STL_MOVE_H */ |