55dd844556
2009-08-29 Chris Jefferson <chris@bubblescope.net>
* include/bits/move.h (_GLIBCXX_FORWARD): Add.
* include/bits/stl_uninitialized.h (__uninitialized_construct_range):
Add.
* include/bits/stl_tempbuf.h (_Temporary_buffer::
_Temporary_buffer(_ForwardIterator, _ForwardIterator)): Use the latter.
* include/bits/stl_construct.h (_Construct(_T1*, _T2&&)): Add in
C++0x mode.
* testsuite/util/testsuite_hooks.h (operator<(const copy_tracker&,
const copy_tracker&)): Add.
* testsuite/25_algorithms/stable_partition/mem_check.cc: New.
* testsuite/25_algorithms/stable_sort/mem_check.cc: Likewise.
From-SVN: r151207
127 lines
3.8 KiB
C++
127 lines
3.8 KiB
C++
// Move, forward and identity for C++0x + swap -*- C++ -*-
|
|
|
|
// Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc.
|
|
//
|
|
// This file is part of the GNU ISO C++ Library. This library is free
|
|
// software; you can redistribute it and/or modify it under the
|
|
// terms of the GNU General Public License as published by the
|
|
// Free Software Foundation; either version 3, or (at your option)
|
|
// any later version.
|
|
|
|
// This library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
|
|
// Under Section 7 of GPL version 3, you are granted additional
|
|
// permissions described in the GCC Runtime Library Exception, version
|
|
// 3.1, as published by the Free Software Foundation.
|
|
|
|
// You should have received a copy of the GNU General Public License and
|
|
// a copy of the GCC Runtime Library Exception along with this program;
|
|
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
// <http://www.gnu.org/licenses/>.
|
|
|
|
/** @file move.h
|
|
* This is an internal header file, included by other library headers.
|
|
* You should not attempt to use it directly.
|
|
*/
|
|
|
|
#ifndef _MOVE_H
|
|
#define _MOVE_H 1
|
|
|
|
#include <bits/c++config.h>
|
|
#include <cstddef>
|
|
#include <bits/concept_check.h>
|
|
|
|
#ifdef __GXX_EXPERIMENTAL_CXX0X__
|
|
#include <type_traits>
|
|
|
|
_GLIBCXX_BEGIN_NAMESPACE(std)
|
|
|
|
/// identity
|
|
template<typename _Tp>
|
|
struct identity
|
|
{
|
|
typedef _Tp type;
|
|
};
|
|
|
|
/// forward (as per N2835)
|
|
/// Forward lvalues as rvalues.
|
|
template<typename _Tp>
|
|
inline typename enable_if<!is_lvalue_reference<_Tp>::value, _Tp&&>::type
|
|
forward(typename std::identity<_Tp>::type& __t)
|
|
{ return static_cast<_Tp&&>(__t); }
|
|
|
|
/// Forward rvalues as rvalues.
|
|
template<typename _Tp>
|
|
inline typename enable_if<!is_lvalue_reference<_Tp>::value, _Tp&&>::type
|
|
forward(typename std::identity<_Tp>::type&& __t)
|
|
{ return static_cast<_Tp&&>(__t); }
|
|
|
|
// Forward lvalues as lvalues.
|
|
template<typename _Tp>
|
|
inline typename enable_if<is_lvalue_reference<_Tp>::value, _Tp>::type
|
|
forward(typename std::identity<_Tp>::type __t)
|
|
{ return __t; }
|
|
|
|
// Prevent forwarding rvalues as const lvalues.
|
|
template<typename _Tp>
|
|
inline typename enable_if<is_lvalue_reference<_Tp>::value, _Tp>::type
|
|
forward(typename std::remove_reference<_Tp>::type&& __t) = delete;
|
|
|
|
/**
|
|
* @brief Move a value.
|
|
* @ingroup mutating_algorithms
|
|
* @param __t A thing of arbitrary type.
|
|
* @return Same, moved.
|
|
*/
|
|
template<typename _Tp>
|
|
inline typename std::remove_reference<_Tp>::type&&
|
|
move(_Tp&& __t)
|
|
{ return static_cast<typename std::remove_reference<_Tp>::type&&>(__t); }
|
|
|
|
_GLIBCXX_END_NAMESPACE
|
|
|
|
#define _GLIBCXX_MOVE(_Tp) std::move(_Tp)
|
|
#define _GLIBCXX_FORWARD(_Tp, __val) std::forward<_Tp>(__val)
|
|
#else
|
|
#define _GLIBCXX_MOVE(_Tp) (_Tp)
|
|
#define _GLIBCXX_FORWARD(_Tp, __val) (__val)
|
|
#endif
|
|
|
|
_GLIBCXX_BEGIN_NAMESPACE(std)
|
|
|
|
/**
|
|
* @brief Swaps two values.
|
|
* @ingroup mutating_algorithms
|
|
* @param __a A thing of arbitrary type.
|
|
* @param __b Another thing of arbitrary type.
|
|
* @return Nothing.
|
|
*/
|
|
template<typename _Tp>
|
|
inline void
|
|
swap(_Tp& __a, _Tp& __b)
|
|
{
|
|
// concept requirements
|
|
__glibcxx_function_requires(_SGIAssignableConcept<_Tp>)
|
|
|
|
_Tp __tmp = _GLIBCXX_MOVE(__a);
|
|
__a = _GLIBCXX_MOVE(__b);
|
|
__b = _GLIBCXX_MOVE(__tmp);
|
|
}
|
|
|
|
// _GLIBCXX_RESOLVE_LIB_DEFECTS
|
|
// DR 809. std::swap should be overloaded for array types.
|
|
template<typename _Tp, size_t _Nm>
|
|
inline void
|
|
swap(_Tp (&__a)[_Nm], _Tp (&__b)[_Nm])
|
|
{
|
|
for (size_t __n = 0; __n < _Nm; ++__n)
|
|
swap(__a[__n], __b[__n]);
|
|
}
|
|
|
|
_GLIBCXX_END_NAMESPACE
|
|
|
|
#endif /* _MOVE_H */
|