LCOV - lcov.info - /usr/include/c++/4.3/bits/stl_move.h

LTP GCOV extension - code coverage report
Current view: | directory - usr/include/c++/4.3/bits - stl_move.h
Test: | lcov.info
Date: | 2008-08-14 |  | Instrumented lines: | 5
Code covered: | 100.0 % |  | Executed lines: | 5

           1                 : // Move, forward and identity for C++0x + swap -*- 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                 : #include <bits/c++config.h>
          39                 : #include <bits/concept_check.h>
          40                 :
          41                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
          42                 : #include <type_traits>
          43                 :
          44                 : _GLIBCXX_BEGIN_NAMESPACE(std)
          45                 :
          46                 :   // 20.2.2, forward/move
          47                 :   template<typename _Tp>
          48                 :     struct identity
          49                 :     {
          50                 :       typedef _Tp type;
          51                 :     };
          52                 :
          53                 :   template<typename _Tp>
          54                 :     inline _Tp&&
          55                 :     forward(typename std::identity<_Tp>::type&& __t)
          56                 :     { return __t; }
          57                 :
          58                 :   template<typename _Tp>
          59                 :     inline typename std::remove_reference<_Tp>::type&&
          60                 :     move(_Tp&& __t)
          61                 :     { return __t; }
          62                 :
          63                 : _GLIBCXX_END_NAMESPACE
          64                 :
          65                 : #define _GLIBCXX_MOVE(_Tp) std::move(_Tp)
          66                 : #else
          67                 : #define _GLIBCXX_MOVE(_Tp) (_Tp)
          68                 : #endif
          69                 :
          70                 : _GLIBCXX_BEGIN_NAMESPACE(std)
          71                 :
          72                 :   /**
          73                 :    *  @brief Swaps two values.
          74                 :    *  @param  a  A thing of arbitrary type.
          75                 :    *  @param  b  Another thing of arbitrary type.
          76                 :    *  @return   Nothing.
          77                 :   */
          78                 :   template<typename _Tp>
          79                 :     inline void
          80            7080 :     swap(_Tp& __a, _Tp& __b)
          81                 :     {
          82                 :       // concept requirements
          83                 :       __glibcxx_function_requires(_SGIAssignableConcept<_Tp>)
          84                 :
          85            7080 :       _Tp __tmp = _GLIBCXX_MOVE(__a);
          86            7080 :       __a = _GLIBCXX_MOVE(__b);
          87            7080 :       __b = _GLIBCXX_MOVE(__tmp);
          88            7080 :     }
          89                 :
          90                 : _GLIBCXX_END_NAMESPACE
          91                 :
          92                 : #endif /* _STL_MOVE_H */

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