298 lines
9.7 KiB
C++
298 lines
9.7 KiB
C++
// Raw memory manipulators -*- C++ -*-
|
|
|
|
// Copyright (C) 2001, 2004 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 2, 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.
|
|
|
|
// You should have received a copy of the GNU General Public License along
|
|
// with this library; see the file COPYING. If not, write to the Free
|
|
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
|
|
// USA.
|
|
|
|
// As a special exception, you may use this file as part of a free software
|
|
// library without restriction. Specifically, if other files instantiate
|
|
// templates or use macros or inline functions from this file, or you compile
|
|
// this file and link it with other files to produce an executable, this
|
|
// file does not by itself cause the resulting executable to be covered by
|
|
// the GNU General Public License. This exception does not however
|
|
// invalidate any other reasons why the executable file might be covered by
|
|
// the GNU General Public License.
|
|
|
|
/*
|
|
*
|
|
* Copyright (c) 1994
|
|
* Hewlett-Packard Company
|
|
*
|
|
* Permission to use, copy, modify, distribute and sell this software
|
|
* and its documentation for any purpose is hereby granted without fee,
|
|
* provided that the above copyright notice appear in all copies and
|
|
* that both that copyright notice and this permission notice appear
|
|
* in supporting documentation. Hewlett-Packard Company makes no
|
|
* representations about the suitability of this software for any
|
|
* purpose. It is provided "as is" without express or implied warranty.
|
|
*
|
|
*
|
|
* Copyright (c) 1996,1997
|
|
* Silicon Graphics Computer Systems, Inc.
|
|
*
|
|
* Permission to use, copy, modify, distribute and sell this software
|
|
* and its documentation for any purpose is hereby granted without fee,
|
|
* provided that the above copyright notice appear in all copies and
|
|
* that both that copyright notice and this permission notice appear
|
|
* in supporting documentation. Silicon Graphics makes no
|
|
* representations about the suitability of this software for any
|
|
* purpose. It is provided "as is" without express or implied warranty.
|
|
*/
|
|
|
|
/** @file stl_uninitialized.h
|
|
* This is an internal header file, included by other library headers.
|
|
* You should not attempt to use it directly.
|
|
*/
|
|
|
|
#ifndef _STL_UNINITIALIZED_H
|
|
#define _STL_UNINITIALIZED_H 1
|
|
|
|
#include <cstring>
|
|
|
|
namespace std
|
|
{
|
|
// uninitialized_copy
|
|
template<typename _InputIterator, typename _ForwardIterator>
|
|
inline _ForwardIterator
|
|
__uninitialized_copy_aux(_InputIterator __first, _InputIterator __last,
|
|
_ForwardIterator __result,
|
|
__true_type)
|
|
{ return std::copy(__first, __last, __result); }
|
|
|
|
template<typename _InputIterator, typename _ForwardIterator>
|
|
inline _ForwardIterator
|
|
__uninitialized_copy_aux(_InputIterator __first, _InputIterator __last,
|
|
_ForwardIterator __result,
|
|
__false_type)
|
|
{
|
|
_ForwardIterator __cur = __result;
|
|
try
|
|
{
|
|
for ( ; __first != __last; ++__first, ++__cur)
|
|
std::_Construct(&*__cur, *__first);
|
|
return __cur;
|
|
}
|
|
catch(...)
|
|
{
|
|
std::_Destroy(__result, __cur);
|
|
__throw_exception_again;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Copies the range [first,last) into result.
|
|
* @param first An input iterator.
|
|
* @param last An input iterator.
|
|
* @param result An output iterator.
|
|
* @return result + (first - last)
|
|
*
|
|
* Like copy(), but does not require an initialized output range.
|
|
*/
|
|
template<typename _InputIterator, typename _ForwardIterator>
|
|
inline _ForwardIterator
|
|
uninitialized_copy(_InputIterator __first, _InputIterator __last,
|
|
_ForwardIterator __result)
|
|
{
|
|
typedef typename iterator_traits<_ForwardIterator>::value_type _ValueType;
|
|
typedef typename __type_traits<_ValueType>::is_POD_type _Is_POD;
|
|
return std::__uninitialized_copy_aux(__first, __last, __result,
|
|
_Is_POD());
|
|
}
|
|
|
|
inline char*
|
|
uninitialized_copy(const char* __first, const char* __last, char* __result)
|
|
{
|
|
std::memmove(__result, __first, __last - __first);
|
|
return __result + (__last - __first);
|
|
}
|
|
|
|
inline wchar_t*
|
|
uninitialized_copy(const wchar_t* __first, const wchar_t* __last,
|
|
wchar_t* __result)
|
|
{
|
|
std::memmove(__result, __first, sizeof(wchar_t) * (__last - __first));
|
|
return __result + (__last - __first);
|
|
}
|
|
|
|
// Valid if copy construction is equivalent to assignment, and if the
|
|
// destructor is trivial.
|
|
template<typename _ForwardIterator, typename _Tp>
|
|
inline void
|
|
__uninitialized_fill_aux(_ForwardIterator __first,
|
|
_ForwardIterator __last,
|
|
const _Tp& __x, __true_type)
|
|
{ std::fill(__first, __last, __x); }
|
|
|
|
template<typename _ForwardIterator, typename _Tp>
|
|
void
|
|
__uninitialized_fill_aux(_ForwardIterator __first, _ForwardIterator __last,
|
|
const _Tp& __x, __false_type)
|
|
{
|
|
_ForwardIterator __cur = __first;
|
|
try
|
|
{
|
|
for ( ; __cur != __last; ++__cur)
|
|
std::_Construct(&*__cur, __x);
|
|
}
|
|
catch(...)
|
|
{
|
|
std::_Destroy(__first, __cur);
|
|
__throw_exception_again;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Copies the value x into the range [first,last).
|
|
* @param first An input iterator.
|
|
* @param last An input iterator.
|
|
* @param x The source value.
|
|
* @return Nothing.
|
|
*
|
|
* Like fill(), but does not require an initialized output range.
|
|
*/
|
|
template<typename _ForwardIterator, typename _Tp>
|
|
inline void
|
|
uninitialized_fill(_ForwardIterator __first, _ForwardIterator __last,
|
|
const _Tp& __x)
|
|
{
|
|
typedef typename iterator_traits<_ForwardIterator>::value_type _ValueType;
|
|
typedef typename __type_traits<_ValueType>::is_POD_type _Is_POD;
|
|
std::__uninitialized_fill_aux(__first, __last, __x, _Is_POD());
|
|
}
|
|
|
|
// Valid if copy construction is equivalent to assignment, and if the
|
|
// destructor is trivial.
|
|
template<typename _ForwardIterator, typename _Size, typename _Tp>
|
|
inline _ForwardIterator
|
|
__uninitialized_fill_n_aux(_ForwardIterator __first, _Size __n,
|
|
const _Tp& __x, __true_type)
|
|
{ return std::fill_n(__first, __n, __x); }
|
|
|
|
template<typename _ForwardIterator, typename _Size, typename _Tp>
|
|
_ForwardIterator
|
|
__uninitialized_fill_n_aux(_ForwardIterator __first, _Size __n,
|
|
const _Tp& __x, __false_type)
|
|
{
|
|
_ForwardIterator __cur = __first;
|
|
try
|
|
{
|
|
for ( ; __n > 0; --__n, ++__cur)
|
|
std::_Construct(&*__cur, __x);
|
|
return __cur;
|
|
}
|
|
catch(...)
|
|
{
|
|
std::_Destroy(__first, __cur);
|
|
__throw_exception_again;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Copies the value x into the range [first,first+n).
|
|
* @param first An input iterator.
|
|
* @param n The number of copies to make.
|
|
* @param x The source value.
|
|
* @return first+n
|
|
*
|
|
* Like fill_n(), but does not require an initialized output range.
|
|
*/
|
|
template<typename _ForwardIterator, typename _Size, typename _Tp>
|
|
inline _ForwardIterator
|
|
uninitialized_fill_n(_ForwardIterator __first, _Size __n, const _Tp& __x)
|
|
{
|
|
typedef typename iterator_traits<_ForwardIterator>::value_type _ValueType;
|
|
typedef typename __type_traits<_ValueType>::is_POD_type _Is_POD;
|
|
return std::__uninitialized_fill_n_aux(__first, __n, __x, _Is_POD());
|
|
}
|
|
|
|
// Extensions: __uninitialized_copy_copy, __uninitialized_copy_fill,
|
|
// __uninitialized_fill_copy.
|
|
|
|
// __uninitialized_copy_copy
|
|
// Copies [first1, last1) into [result, result + (last1 - first1)), and
|
|
// copies [first2, last2) into
|
|
// [result, result + (last1 - first1) + (last2 - first2)).
|
|
|
|
template<typename _InputIterator1, typename _InputIterator2,
|
|
typename _ForwardIterator>
|
|
inline _ForwardIterator
|
|
__uninitialized_copy_copy(_InputIterator1 __first1,
|
|
_InputIterator1 __last1,
|
|
_InputIterator2 __first2,
|
|
_InputIterator2 __last2,
|
|
_ForwardIterator __result)
|
|
{
|
|
_ForwardIterator __mid = std::uninitialized_copy(__first1, __last1,
|
|
__result);
|
|
try
|
|
{
|
|
return std::uninitialized_copy(__first2, __last2, __mid);
|
|
}
|
|
catch(...)
|
|
{
|
|
std::_Destroy(__result, __mid);
|
|
__throw_exception_again;
|
|
}
|
|
}
|
|
|
|
// __uninitialized_fill_copy
|
|
// Fills [result, mid) with x, and copies [first, last) into
|
|
// [mid, mid + (last - first)).
|
|
template<typename _ForwardIterator, typename _Tp, typename _InputIterator>
|
|
inline _ForwardIterator
|
|
__uninitialized_fill_copy(_ForwardIterator __result, _ForwardIterator __mid,
|
|
const _Tp& __x, _InputIterator __first,
|
|
_InputIterator __last)
|
|
{
|
|
std::uninitialized_fill(__result, __mid, __x);
|
|
try
|
|
{
|
|
return std::uninitialized_copy(__first, __last, __mid);
|
|
}
|
|
catch(...)
|
|
{
|
|
std::_Destroy(__result, __mid);
|
|
__throw_exception_again;
|
|
}
|
|
}
|
|
|
|
// __uninitialized_copy_fill
|
|
// Copies [first1, last1) into [first2, first2 + (last1 - first1)), and
|
|
// fills [first2 + (last1 - first1), last2) with x.
|
|
template<typename _InputIterator, typename _ForwardIterator, typename _Tp>
|
|
inline void
|
|
__uninitialized_copy_fill(_InputIterator __first1, _InputIterator __last1,
|
|
_ForwardIterator __first2,
|
|
_ForwardIterator __last2, const _Tp& __x)
|
|
{
|
|
_ForwardIterator __mid2 = std::uninitialized_copy(__first1, __last1,
|
|
__first2);
|
|
try
|
|
{
|
|
std::uninitialized_fill(__mid2, __last2, __x);
|
|
}
|
|
catch(...)
|
|
{
|
|
std::_Destroy(__first2, __mid2);
|
|
__throw_exception_again;
|
|
}
|
|
}
|
|
|
|
} // namespace std
|
|
|
|
#endif /* _STL_UNINITIALIZED_H */
|