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Diffstat (limited to 'contrib/libstdc++/include/bits/stl_uninitialized.h')
| -rw-r--r-- | contrib/libstdc++/include/bits/stl_uninitialized.h | 290 |
1 files changed, 290 insertions, 0 deletions
diff --git a/contrib/libstdc++/include/bits/stl_uninitialized.h b/contrib/libstdc++/include/bits/stl_uninitialized.h new file mode 100644 index 0000000..b5f7b8c --- /dev/null +++ b/contrib/libstdc++/include/bits/stl_uninitialized.h @@ -0,0 +1,290 @@ +// Raw memory manipulators -*- C++ -*- + +// Copyright (C) 2001 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 _CPP_BITS_STL_UNINITIALIZED_H +#define _CPP_BITS_STL_UNINITIALIZED_H 1 + +#include <cstring> + +namespace std +{ + + // uninitialized_copy + + template<typename _InputIter, typename _ForwardIter> + inline _ForwardIter + __uninitialized_copy_aux(_InputIter __first, _InputIter __last, + _ForwardIter __result, + __true_type) + { return copy(__first, __last, __result); } + + template<typename _InputIter, typename _ForwardIter> + _ForwardIter + __uninitialized_copy_aux(_InputIter __first, _InputIter __last, + _ForwardIter __result, + __false_type) + { + _ForwardIter __cur = __result; + try { + for ( ; __first != __last; ++__first, ++__cur) + _Construct(&*__cur, *__first); + return __cur; + } + catch(...) + { + _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 _InputIter, typename _ForwardIter> + inline _ForwardIter + uninitialized_copy(_InputIter __first, _InputIter __last, _ForwardIter __result) + { + typedef typename iterator_traits<_ForwardIter>::value_type _ValueType; + typedef typename __type_traits<_ValueType>::is_POD_type _Is_POD; + return __uninitialized_copy_aux(__first, __last, __result, _Is_POD()); + } + + inline char* + uninitialized_copy(const char* __first, const char* __last, char* __result) + { + 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) + { + 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 _ForwardIter, typename _Tp> + inline void + __uninitialized_fill_aux(_ForwardIter __first, _ForwardIter __last, + const _Tp& __x, __true_type) + { fill(__first, __last, __x); } + + template<typename _ForwardIter, typename _Tp> + void + __uninitialized_fill_aux(_ForwardIter __first, _ForwardIter __last, + const _Tp& __x, __false_type) + { + _ForwardIter __cur = __first; + try { + for ( ; __cur != __last; ++__cur) + _Construct(&*__cur, __x); + } + catch(...) + { + _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 _ForwardIter, typename _Tp> + inline void + uninitialized_fill(_ForwardIter __first, _ForwardIter __last, const _Tp& __x) + { + typedef typename iterator_traits<_ForwardIter>::value_type _ValueType; + typedef typename __type_traits<_ValueType>::is_POD_type _Is_POD; + __uninitialized_fill_aux(__first, __last, __x, _Is_POD()); + } + + // Valid if copy construction is equivalent to assignment, and if the + // destructor is trivial. + template<typename _ForwardIter, typename _Size, typename _Tp> + inline _ForwardIter + __uninitialized_fill_n_aux(_ForwardIter __first, _Size __n, + const _Tp& __x, __true_type) + { + return fill_n(__first, __n, __x); + } + + template<typename _ForwardIter, typename _Size, typename _Tp> + _ForwardIter + __uninitialized_fill_n_aux(_ForwardIter __first, _Size __n, + const _Tp& __x, __false_type) + { + _ForwardIter __cur = __first; + try { + for ( ; __n > 0; --__n, ++__cur) + _Construct(&*__cur, __x); + return __cur; + } + catch(...) + { + _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 _ForwardIter, typename _Size, typename _Tp> + inline _ForwardIter + uninitialized_fill_n(_ForwardIter __first, _Size __n, const _Tp& __x) + { + typedef typename iterator_traits<_ForwardIter>::value_type _ValueType; + typedef typename __type_traits<_ValueType>::is_POD_type _Is_POD; + return __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 _InputIter1, typename _InputIter2, typename _ForwardIter> + inline _ForwardIter + __uninitialized_copy_copy(_InputIter1 __first1, _InputIter1 __last1, + _InputIter2 __first2, _InputIter2 __last2, + _ForwardIter __result) + { + _ForwardIter __mid = uninitialized_copy(__first1, __last1, __result); + try { + return uninitialized_copy(__first2, __last2, __mid); + } + catch(...) + { + _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 _ForwardIter, typename _Tp, typename _InputIter> + inline _ForwardIter + __uninitialized_fill_copy(_ForwardIter __result, _ForwardIter __mid, + const _Tp& __x, + _InputIter __first, _InputIter __last) + { + uninitialized_fill(__result, __mid, __x); + try { + return uninitialized_copy(__first, __last, __mid); + } + catch(...) + { + _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 _InputIter, typename _ForwardIter, typename _Tp> + inline void + __uninitialized_copy_fill(_InputIter __first1, _InputIter __last1, + _ForwardIter __first2, _ForwardIter __last2, + const _Tp& __x) + { + _ForwardIter __mid2 = uninitialized_copy(__first1, __last1, __first2); + try { + uninitialized_fill(__mid2, __last2, __x); + } + catch(...) + { + _Destroy(__first2, __mid2); + __throw_exception_again; + } + } + +} // namespace std + +#endif /* _CPP_BITS_STL_UNINITIALIZED_H */ + +// Local Variables: +// mode:C++ +// End: |
