641 lines
19 KiB
C++
641 lines
19 KiB
C++
// Raw memory manipulators -*- C++ -*-
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// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
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// 2009, 2010
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// Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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/*
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*
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* Copyright (c) 1994
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* Hewlett-Packard Company
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation. Hewlett-Packard Company makes no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*
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*
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* Copyright (c) 1996,1997
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* Silicon Graphics Computer Systems, Inc.
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation. Silicon Graphics makes no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*/
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/** @file bits/stl_uninitialized.h
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* This is an internal header file, included by other library headers.
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* Do not attempt to use it directly. @headername{memory}
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*/
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#ifndef _STL_UNINITIALIZED_H
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#define _STL_UNINITIALIZED_H 1
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namespace std _GLIBCXX_VISIBILITY(default)
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{
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_GLIBCXX_BEGIN_NAMESPACE_VERSION
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template<bool _TrivialValueTypes>
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struct __uninitialized_copy
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{
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template<typename _InputIterator, typename _ForwardIterator>
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static _ForwardIterator
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__uninit_copy(_InputIterator __first, _InputIterator __last,
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_ForwardIterator __result)
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{
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_ForwardIterator __cur = __result;
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__try
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{
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for (; __first != __last; ++__first, ++__cur)
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std::_Construct(std::__addressof(*__cur), *__first);
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return __cur;
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}
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__catch(...)
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{
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std::_Destroy(__result, __cur);
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__throw_exception_again;
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}
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}
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};
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template<>
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struct __uninitialized_copy<true>
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{
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template<typename _InputIterator, typename _ForwardIterator>
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static _ForwardIterator
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__uninit_copy(_InputIterator __first, _InputIterator __last,
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_ForwardIterator __result)
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{ return std::copy(__first, __last, __result); }
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};
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/**
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* @brief Copies the range [first,last) into result.
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* @param first An input iterator.
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* @param last An input iterator.
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* @param result An output iterator.
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* @return result + (first - last)
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*
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* Like copy(), but does not require an initialized output range.
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*/
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template<typename _InputIterator, typename _ForwardIterator>
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inline _ForwardIterator
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uninitialized_copy(_InputIterator __first, _InputIterator __last,
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_ForwardIterator __result)
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{
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typedef typename iterator_traits<_InputIterator>::value_type
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_ValueType1;
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typedef typename iterator_traits<_ForwardIterator>::value_type
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_ValueType2;
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return std::__uninitialized_copy<(__is_trivial(_ValueType1)
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&& __is_trivial(_ValueType2))>::
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__uninit_copy(__first, __last, __result);
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}
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template<bool _TrivialValueType>
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struct __uninitialized_fill
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{
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template<typename _ForwardIterator, typename _Tp>
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static void
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__uninit_fill(_ForwardIterator __first, _ForwardIterator __last,
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const _Tp& __x)
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{
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_ForwardIterator __cur = __first;
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__try
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{
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for (; __cur != __last; ++__cur)
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std::_Construct(std::__addressof(*__cur), __x);
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}
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__catch(...)
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{
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std::_Destroy(__first, __cur);
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__throw_exception_again;
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}
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}
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};
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template<>
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struct __uninitialized_fill<true>
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{
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template<typename _ForwardIterator, typename _Tp>
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static void
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__uninit_fill(_ForwardIterator __first, _ForwardIterator __last,
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const _Tp& __x)
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{ std::fill(__first, __last, __x); }
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};
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/**
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* @brief Copies the value x into the range [first,last).
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* @param first An input iterator.
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* @param last An input iterator.
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* @param x The source value.
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* @return Nothing.
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*
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* Like fill(), but does not require an initialized output range.
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*/
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template<typename _ForwardIterator, typename _Tp>
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inline void
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uninitialized_fill(_ForwardIterator __first, _ForwardIterator __last,
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const _Tp& __x)
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{
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typedef typename iterator_traits<_ForwardIterator>::value_type
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_ValueType;
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std::__uninitialized_fill<__is_trivial(_ValueType)>::
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__uninit_fill(__first, __last, __x);
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}
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template<bool _TrivialValueType>
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struct __uninitialized_fill_n
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{
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template<typename _ForwardIterator, typename _Size, typename _Tp>
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static void
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__uninit_fill_n(_ForwardIterator __first, _Size __n,
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const _Tp& __x)
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{
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_ForwardIterator __cur = __first;
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__try
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{
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for (; __n > 0; --__n, ++__cur)
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std::_Construct(std::__addressof(*__cur), __x);
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}
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__catch(...)
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{
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std::_Destroy(__first, __cur);
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__throw_exception_again;
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}
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}
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};
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template<>
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struct __uninitialized_fill_n<true>
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{
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template<typename _ForwardIterator, typename _Size, typename _Tp>
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static void
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__uninit_fill_n(_ForwardIterator __first, _Size __n,
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const _Tp& __x)
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{ std::fill_n(__first, __n, __x); }
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};
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/**
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* @brief Copies the value x into the range [first,first+n).
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* @param first An input iterator.
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* @param n The number of copies to make.
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* @param x The source value.
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* @return Nothing.
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*
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* Like fill_n(), but does not require an initialized output range.
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*/
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template<typename _ForwardIterator, typename _Size, typename _Tp>
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inline void
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uninitialized_fill_n(_ForwardIterator __first, _Size __n, const _Tp& __x)
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{
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typedef typename iterator_traits<_ForwardIterator>::value_type
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_ValueType;
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std::__uninitialized_fill_n<__is_trivial(_ValueType)>::
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__uninit_fill_n(__first, __n, __x);
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}
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// Extensions: versions of uninitialized_copy, uninitialized_fill,
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// and uninitialized_fill_n that take an allocator parameter.
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// We dispatch back to the standard versions when we're given the
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// default allocator. For nondefault allocators we do not use
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// any of the POD optimizations.
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template<typename _InputIterator, typename _ForwardIterator,
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typename _Allocator>
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_ForwardIterator
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__uninitialized_copy_a(_InputIterator __first, _InputIterator __last,
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_ForwardIterator __result, _Allocator& __alloc)
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{
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_ForwardIterator __cur = __result;
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__try
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{
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for (; __first != __last; ++__first, ++__cur)
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__alloc.construct(std::__addressof(*__cur), *__first);
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return __cur;
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}
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__catch(...)
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{
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std::_Destroy(__result, __cur, __alloc);
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__throw_exception_again;
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}
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}
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template<typename _InputIterator, typename _ForwardIterator, typename _Tp>
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inline _ForwardIterator
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__uninitialized_copy_a(_InputIterator __first, _InputIterator __last,
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_ForwardIterator __result, allocator<_Tp>&)
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{ return std::uninitialized_copy(__first, __last, __result); }
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template<typename _InputIterator, typename _ForwardIterator,
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typename _Allocator>
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inline _ForwardIterator
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__uninitialized_move_a(_InputIterator __first, _InputIterator __last,
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_ForwardIterator __result, _Allocator& __alloc)
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{
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return std::__uninitialized_copy_a(_GLIBCXX_MAKE_MOVE_ITERATOR(__first),
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_GLIBCXX_MAKE_MOVE_ITERATOR(__last),
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__result, __alloc);
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}
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template<typename _ForwardIterator, typename _Tp, typename _Allocator>
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void
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__uninitialized_fill_a(_ForwardIterator __first, _ForwardIterator __last,
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const _Tp& __x, _Allocator& __alloc)
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{
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_ForwardIterator __cur = __first;
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__try
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{
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for (; __cur != __last; ++__cur)
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__alloc.construct(std::__addressof(*__cur), __x);
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}
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__catch(...)
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{
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std::_Destroy(__first, __cur, __alloc);
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__throw_exception_again;
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}
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}
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template<typename _ForwardIterator, typename _Tp, typename _Tp2>
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inline void
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__uninitialized_fill_a(_ForwardIterator __first, _ForwardIterator __last,
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const _Tp& __x, allocator<_Tp2>&)
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{ std::uninitialized_fill(__first, __last, __x); }
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template<typename _ForwardIterator, typename _Size, typename _Tp,
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typename _Allocator>
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void
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__uninitialized_fill_n_a(_ForwardIterator __first, _Size __n,
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const _Tp& __x, _Allocator& __alloc)
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{
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_ForwardIterator __cur = __first;
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__try
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{
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for (; __n > 0; --__n, ++__cur)
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__alloc.construct(std::__addressof(*__cur), __x);
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}
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__catch(...)
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{
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std::_Destroy(__first, __cur, __alloc);
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__throw_exception_again;
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}
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}
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template<typename _ForwardIterator, typename _Size, typename _Tp,
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typename _Tp2>
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inline void
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__uninitialized_fill_n_a(_ForwardIterator __first, _Size __n,
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const _Tp& __x, allocator<_Tp2>&)
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{ std::uninitialized_fill_n(__first, __n, __x); }
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// Extensions: __uninitialized_copy_move, __uninitialized_move_copy,
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// __uninitialized_fill_move, __uninitialized_move_fill.
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// All of these algorithms take a user-supplied allocator, which is used
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// for construction and destruction.
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// __uninitialized_copy_move
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// Copies [first1, last1) into [result, result + (last1 - first1)), and
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// move [first2, last2) into
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// [result, result + (last1 - first1) + (last2 - first2)).
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template<typename _InputIterator1, typename _InputIterator2,
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typename _ForwardIterator, typename _Allocator>
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inline _ForwardIterator
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__uninitialized_copy_move(_InputIterator1 __first1,
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_InputIterator1 __last1,
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_InputIterator2 __first2,
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_InputIterator2 __last2,
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_ForwardIterator __result,
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_Allocator& __alloc)
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{
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_ForwardIterator __mid = std::__uninitialized_copy_a(__first1, __last1,
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__result,
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__alloc);
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__try
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{
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return std::__uninitialized_move_a(__first2, __last2, __mid, __alloc);
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}
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__catch(...)
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{
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std::_Destroy(__result, __mid, __alloc);
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__throw_exception_again;
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}
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}
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// __uninitialized_move_copy
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// Moves [first1, last1) into [result, result + (last1 - first1)), and
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// copies [first2, last2) into
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// [result, result + (last1 - first1) + (last2 - first2)).
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template<typename _InputIterator1, typename _InputIterator2,
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typename _ForwardIterator, typename _Allocator>
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inline _ForwardIterator
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__uninitialized_move_copy(_InputIterator1 __first1,
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_InputIterator1 __last1,
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_InputIterator2 __first2,
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_InputIterator2 __last2,
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_ForwardIterator __result,
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_Allocator& __alloc)
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{
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_ForwardIterator __mid = std::__uninitialized_move_a(__first1, __last1,
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__result,
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__alloc);
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__try
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{
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return std::__uninitialized_copy_a(__first2, __last2, __mid, __alloc);
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}
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__catch(...)
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{
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std::_Destroy(__result, __mid, __alloc);
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__throw_exception_again;
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}
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}
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// __uninitialized_fill_move
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// Fills [result, mid) with x, and moves [first, last) into
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// [mid, mid + (last - first)).
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template<typename _ForwardIterator, typename _Tp, typename _InputIterator,
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typename _Allocator>
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inline _ForwardIterator
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__uninitialized_fill_move(_ForwardIterator __result, _ForwardIterator __mid,
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const _Tp& __x, _InputIterator __first,
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_InputIterator __last, _Allocator& __alloc)
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{
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std::__uninitialized_fill_a(__result, __mid, __x, __alloc);
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__try
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{
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return std::__uninitialized_move_a(__first, __last, __mid, __alloc);
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}
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__catch(...)
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{
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std::_Destroy(__result, __mid, __alloc);
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__throw_exception_again;
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}
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}
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// __uninitialized_move_fill
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// Moves [first1, last1) into [first2, first2 + (last1 - first1)), and
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// fills [first2 + (last1 - first1), last2) with x.
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template<typename _InputIterator, typename _ForwardIterator, typename _Tp,
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typename _Allocator>
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inline void
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__uninitialized_move_fill(_InputIterator __first1, _InputIterator __last1,
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_ForwardIterator __first2,
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_ForwardIterator __last2, const _Tp& __x,
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_Allocator& __alloc)
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{
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_ForwardIterator __mid2 = std::__uninitialized_move_a(__first1, __last1,
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__first2,
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__alloc);
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__try
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{
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std::__uninitialized_fill_a(__mid2, __last2, __x, __alloc);
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}
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__catch(...)
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{
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std::_Destroy(__first2, __mid2, __alloc);
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__throw_exception_again;
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}
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}
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#ifdef __GXX_EXPERIMENTAL_CXX0X__
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// Extensions: __uninitialized_default, __uninitialized_default_n,
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// __uninitialized_default_a, __uninitialized_default_n_a.
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template<bool _TrivialValueType>
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struct __uninitialized_default_1
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{
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template<typename _ForwardIterator>
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static void
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__uninit_default(_ForwardIterator __first, _ForwardIterator __last)
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{
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_ForwardIterator __cur = __first;
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__try
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{
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for (; __cur != __last; ++__cur)
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std::_Construct(std::__addressof(*__cur));
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}
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__catch(...)
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{
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std::_Destroy(__first, __cur);
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__throw_exception_again;
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}
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}
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};
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template<>
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struct __uninitialized_default_1<true>
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{
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template<typename _ForwardIterator>
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static void
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__uninit_default(_ForwardIterator __first, _ForwardIterator __last)
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{
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typedef typename iterator_traits<_ForwardIterator>::value_type
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_ValueType;
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std::fill(__first, __last, _ValueType());
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}
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};
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template<bool _TrivialValueType>
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struct __uninitialized_default_n_1
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{
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template<typename _ForwardIterator, typename _Size>
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static void
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__uninit_default_n(_ForwardIterator __first, _Size __n)
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{
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_ForwardIterator __cur = __first;
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__try
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{
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for (; __n > 0; --__n, ++__cur)
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std::_Construct(std::__addressof(*__cur));
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}
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__catch(...)
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{
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std::_Destroy(__first, __cur);
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__throw_exception_again;
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}
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}
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};
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template<>
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struct __uninitialized_default_n_1<true>
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{
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template<typename _ForwardIterator, typename _Size>
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static void
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__uninit_default_n(_ForwardIterator __first, _Size __n)
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{
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typedef typename iterator_traits<_ForwardIterator>::value_type
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_ValueType;
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std::fill_n(__first, __n, _ValueType());
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}
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};
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// __uninitialized_default
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// Fills [first, last) with std::distance(first, last) default
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// constructed value_types(s).
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template<typename _ForwardIterator>
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inline void
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__uninitialized_default(_ForwardIterator __first,
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_ForwardIterator __last)
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{
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typedef typename iterator_traits<_ForwardIterator>::value_type
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_ValueType;
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std::__uninitialized_default_1<__is_trivial(_ValueType)>::
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__uninit_default(__first, __last);
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}
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// __uninitialized_default_n
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// Fills [first, first + n) with n default constructed value_type(s).
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template<typename _ForwardIterator, typename _Size>
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inline void
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__uninitialized_default_n(_ForwardIterator __first, _Size __n)
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{
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typedef typename iterator_traits<_ForwardIterator>::value_type
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_ValueType;
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std::__uninitialized_default_n_1<__is_trivial(_ValueType)>::
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__uninit_default_n(__first, __n);
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}
|
|
|
|
|
|
// __uninitialized_default_a
|
|
// Fills [first, last) with std::distance(first, last) default
|
|
// constructed value_types(s), constructed with the allocator alloc.
|
|
template<typename _ForwardIterator, typename _Allocator>
|
|
void
|
|
__uninitialized_default_a(_ForwardIterator __first,
|
|
_ForwardIterator __last,
|
|
_Allocator& __alloc)
|
|
{
|
|
_ForwardIterator __cur = __first;
|
|
__try
|
|
{
|
|
for (; __cur != __last; ++__cur)
|
|
__alloc.construct(std::__addressof(*__cur));
|
|
}
|
|
__catch(...)
|
|
{
|
|
std::_Destroy(__first, __cur, __alloc);
|
|
__throw_exception_again;
|
|
}
|
|
}
|
|
|
|
template<typename _ForwardIterator, typename _Tp>
|
|
inline void
|
|
__uninitialized_default_a(_ForwardIterator __first,
|
|
_ForwardIterator __last,
|
|
allocator<_Tp>&)
|
|
{ std::__uninitialized_default(__first, __last); }
|
|
|
|
|
|
// __uninitialized_default_n_a
|
|
// Fills [first, first + n) with n default constructed value_types(s),
|
|
// constructed with the allocator alloc.
|
|
template<typename _ForwardIterator, typename _Size, typename _Allocator>
|
|
void
|
|
__uninitialized_default_n_a(_ForwardIterator __first, _Size __n,
|
|
_Allocator& __alloc)
|
|
{
|
|
_ForwardIterator __cur = __first;
|
|
__try
|
|
{
|
|
for (; __n > 0; --__n, ++__cur)
|
|
__alloc.construct(std::__addressof(*__cur));
|
|
}
|
|
__catch(...)
|
|
{
|
|
std::_Destroy(__first, __cur, __alloc);
|
|
__throw_exception_again;
|
|
}
|
|
}
|
|
|
|
template<typename _ForwardIterator, typename _Size, typename _Tp>
|
|
inline void
|
|
__uninitialized_default_n_a(_ForwardIterator __first, _Size __n,
|
|
allocator<_Tp>&)
|
|
{ std::__uninitialized_default_n(__first, __n); }
|
|
|
|
|
|
template<typename _InputIterator, typename _Size,
|
|
typename _ForwardIterator>
|
|
_ForwardIterator
|
|
__uninitialized_copy_n(_InputIterator __first, _Size __n,
|
|
_ForwardIterator __result, input_iterator_tag)
|
|
{
|
|
_ForwardIterator __cur = __result;
|
|
__try
|
|
{
|
|
for (; __n > 0; --__n, ++__first, ++__cur)
|
|
std::_Construct(std::__addressof(*__cur), *__first);
|
|
return __cur;
|
|
}
|
|
__catch(...)
|
|
{
|
|
std::_Destroy(__result, __cur);
|
|
__throw_exception_again;
|
|
}
|
|
}
|
|
|
|
template<typename _RandomAccessIterator, typename _Size,
|
|
typename _ForwardIterator>
|
|
inline _ForwardIterator
|
|
__uninitialized_copy_n(_RandomAccessIterator __first, _Size __n,
|
|
_ForwardIterator __result,
|
|
random_access_iterator_tag)
|
|
{ return std::uninitialized_copy(__first, __first + __n, __result); }
|
|
|
|
/**
|
|
* @brief Copies the range [first,first+n) into result.
|
|
* @param first An input iterator.
|
|
* @param n The number of elements to copy.
|
|
* @param result An output iterator.
|
|
* @return result + n
|
|
*
|
|
* Like copy_n(), but does not require an initialized output range.
|
|
*/
|
|
template<typename _InputIterator, typename _Size, typename _ForwardIterator>
|
|
inline _ForwardIterator
|
|
uninitialized_copy_n(_InputIterator __first, _Size __n,
|
|
_ForwardIterator __result)
|
|
{ return std::__uninitialized_copy_n(__first, __n, __result,
|
|
std::__iterator_category(__first)); }
|
|
#endif
|
|
|
|
_GLIBCXX_END_NAMESPACE_VERSION
|
|
} // namespace
|
|
|
|
#endif /* _STL_UNINITIALIZED_H */
|