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gcc/libstdc++-v3/include/bits/vector.tcc
Jakub Jelinek 748086b7b2 Licensing changes to GPLv3 resp. GPLv3 with GCC Runtime Exception. 
From-SVN: r145841
2009-04-09 17:00:19 +02:00

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// Vector implementation (out of line) -*- C++ -*-
// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 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/>.
/*
*
* 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
* 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 vector.tcc
* This is an internal header file, included by other library headers.
* You should not attempt to use it directly.
*/
#ifndef _VECTOR_TCC
#define _VECTOR_TCC 1
_GLIBCXX_BEGIN_NESTED_NAMESPACE(std, _GLIBCXX_STD_D)
template<typename _Tp, typename _Alloc>
void
vector<_Tp, _Alloc>::
reserve(size_type __n)
{
if (__n > this->max_size())
__throw_length_error(__N("vector::reserve"));
if (this->capacity() < __n)
{
const size_type __old_size = size();
pointer __tmp = _M_allocate_and_copy(__n,
_GLIBCXX_MAKE_MOVE_ITERATOR(this->_M_impl._M_start),
_GLIBCXX_MAKE_MOVE_ITERATOR(this->_M_impl._M_finish));
std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
_M_get_Tp_allocator());
_M_deallocate(this->_M_impl._M_start,
this->_M_impl._M_end_of_storage
- this->_M_impl._M_start);
this->_M_impl._M_start = __tmp;
this->_M_impl._M_finish = __tmp + __old_size;
this->_M_impl._M_end_of_storage = this->_M_impl._M_start + __n;
}
}
#ifdef __GXX_EXPERIMENTAL_CXX0X__
template<typename _Tp, typename _Alloc>
template<typename... _Args>
void
vector<_Tp, _Alloc>::
emplace_back(_Args&&... __args)
{
if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage)
{
this->_M_impl.construct(this->_M_impl._M_finish,
std::forward<_Args>(__args)...);
++this->_M_impl._M_finish;
}
else
_M_insert_aux(end(), std::forward<_Args>(__args)...);
}
#endif
template<typename _Tp, typename _Alloc>
typename vector<_Tp, _Alloc>::iterator
vector<_Tp, _Alloc>::
insert(iterator __position, const value_type& __x)
{
const size_type __n = __position - begin();
if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage
&& __position == end())
{
this->_M_impl.construct(this->_M_impl._M_finish, __x);
++this->_M_impl._M_finish;
}
else
{
#ifdef __GXX_EXPERIMENTAL_CXX0X__
if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage)
{
_Tp __x_copy = __x;
_M_insert_aux(__position, std::move(__x_copy));
}
else
#endif
_M_insert_aux(__position, __x);
}
return iterator(this->_M_impl._M_start + __n);
}
template<typename _Tp, typename _Alloc>
typename vector<_Tp, _Alloc>::iterator
vector<_Tp, _Alloc>::
erase(iterator __position)
{
if (__position + 1 != end())
_GLIBCXX_MOVE3(__position + 1, end(), __position);
--this->_M_impl._M_finish;
this->_M_impl.destroy(this->_M_impl._M_finish);
return __position;
}
template<typename _Tp, typename _Alloc>
typename vector<_Tp, _Alloc>::iterator
vector<_Tp, _Alloc>::
erase(iterator __first, iterator __last)
{
if (__last != end())
_GLIBCXX_MOVE3(__last, end(), __first);
_M_erase_at_end(__first.base() + (end() - __last));
return __first;
}
template<typename _Tp, typename _Alloc>
vector<_Tp, _Alloc>&
vector<_Tp, _Alloc>::
operator=(const vector<_Tp, _Alloc>& __x)
{
if (&__x != this)
{
const size_type __xlen = __x.size();
if (__xlen > capacity())
{
pointer __tmp = _M_allocate_and_copy(__xlen, __x.begin(),
__x.end());
std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
_M_get_Tp_allocator());
_M_deallocate(this->_M_impl._M_start,
this->_M_impl._M_end_of_storage
- this->_M_impl._M_start);
this->_M_impl._M_start = __tmp;
this->_M_impl._M_end_of_storage = this->_M_impl._M_start + __xlen;
}
else if (size() >= __xlen)
{
std::_Destroy(std::copy(__x.begin(), __x.end(), begin()),
end(), _M_get_Tp_allocator());
}
else
{
std::copy(__x._M_impl._M_start, __x._M_impl._M_start + size(),
this->_M_impl._M_start);
std::__uninitialized_copy_a(__x._M_impl._M_start + size(),
__x._M_impl._M_finish,
this->_M_impl._M_finish,
_M_get_Tp_allocator());
}
this->_M_impl._M_finish = this->_M_impl._M_start + __xlen;
}
return *this;
}
template<typename _Tp, typename _Alloc>
void
vector<_Tp, _Alloc>::
_M_fill_assign(size_t __n, const value_type& __val)
{
if (__n > capacity())
{
vector __tmp(__n, __val, _M_get_Tp_allocator());
__tmp.swap(*this);
}
else if (__n > size())
{
std::fill(begin(), end(), __val);
std::__uninitialized_fill_n_a(this->_M_impl._M_finish,
__n - size(), __val,
_M_get_Tp_allocator());
this->_M_impl._M_finish += __n - size();
}
else
_M_erase_at_end(std::fill_n(this->_M_impl._M_start, __n, __val));
}
template<typename _Tp, typename _Alloc>
template<typename _InputIterator>
void
vector<_Tp, _Alloc>::
_M_assign_aux(_InputIterator __first, _InputIterator __last,
std::input_iterator_tag)
{
pointer __cur(this->_M_impl._M_start);
for (; __first != __last && __cur != this->_M_impl._M_finish;
++__cur, ++__first)
*__cur = *__first;
if (__first == __last)
_M_erase_at_end(__cur);
else
insert(end(), __first, __last);
}
template<typename _Tp, typename _Alloc>
template<typename _ForwardIterator>
void
vector<_Tp, _Alloc>::
_M_assign_aux(_ForwardIterator __first, _ForwardIterator __last,
std::forward_iterator_tag)
{
const size_type __len = std::distance(__first, __last);
if (__len > capacity())
{
pointer __tmp(_M_allocate_and_copy(__len, __first, __last));
std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
_M_get_Tp_allocator());
_M_deallocate(this->_M_impl._M_start,
this->_M_impl._M_end_of_storage
- this->_M_impl._M_start);
this->_M_impl._M_start = __tmp;
this->_M_impl._M_finish = this->_M_impl._M_start + __len;
this->_M_impl._M_end_of_storage = this->_M_impl._M_finish;
}
else if (size() >= __len)
_M_erase_at_end(std::copy(__first, __last, this->_M_impl._M_start));
else
{
_ForwardIterator __mid = __first;
std::advance(__mid, size());
std::copy(__first, __mid, this->_M_impl._M_start);
this->_M_impl._M_finish =
std::__uninitialized_copy_a(__mid, __last,
this->_M_impl._M_finish,
_M_get_Tp_allocator());
}
}
#ifdef __GXX_EXPERIMENTAL_CXX0X__
template<typename _Tp, typename _Alloc>
template<typename... _Args>
typename vector<_Tp, _Alloc>::iterator
vector<_Tp, _Alloc>::
emplace(iterator __position, _Args&&... __args)
{
const size_type __n = __position - begin();
if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage
&& __position == end())
{
this->_M_impl.construct(this->_M_impl._M_finish,
std::forward<_Args>(__args)...);
++this->_M_impl._M_finish;
}
else
_M_insert_aux(__position, std::forward<_Args>(__args)...);
return iterator(this->_M_impl._M_start + __n);
}
template<typename _Tp, typename _Alloc>
template<typename... _Args>
void
vector<_Tp, _Alloc>::
_M_insert_aux(iterator __position, _Args&&... __args)
#else
template<typename _Tp, typename _Alloc>
void
vector<_Tp, _Alloc>::
_M_insert_aux(iterator __position, const _Tp& __x)
#endif
{
if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage)
{
this->_M_impl.construct(this->_M_impl._M_finish,
_GLIBCXX_MOVE(*(this->_M_impl._M_finish
- 1)));
++this->_M_impl._M_finish;
#ifndef __GXX_EXPERIMENTAL_CXX0X__
_Tp __x_copy = __x;
#endif
_GLIBCXX_MOVE_BACKWARD3(__position.base(),
this->_M_impl._M_finish - 2,
this->_M_impl._M_finish - 1);
#ifndef __GXX_EXPERIMENTAL_CXX0X__
*__position = __x_copy;
#else
*__position = _Tp(std::forward<_Args>(__args)...);
#endif
}
else
{
const size_type __len =
_M_check_len(size_type(1), "vector::_M_insert_aux");
const size_type __elems_before = __position - begin();
pointer __new_start(this->_M_allocate(__len));
pointer __new_finish(__new_start);
__try
{
// The order of the three operations is dictated by the C++0x
// case, where the moves could alter a new element belonging
// to the existing vector. This is an issue only for callers
// taking the element by const lvalue ref (see 23.1/13).
this->_M_impl.construct(__new_start + __elems_before,
#ifdef __GXX_EXPERIMENTAL_CXX0X__
std::forward<_Args>(__args)...);
#else
__x);
#endif
__new_finish = 0;
__new_finish =
std::__uninitialized_move_a(this->_M_impl._M_start,
__position.base(), __new_start,
_M_get_Tp_allocator());
++__new_finish;
__new_finish =
std::__uninitialized_move_a(__position.base(),
this->_M_impl._M_finish,
__new_finish,
_M_get_Tp_allocator());
}
__catch(...)
{
if (!__new_finish)
this->_M_impl.destroy(__new_start + __elems_before);
else
std::_Destroy(__new_start, __new_finish, _M_get_Tp_allocator());
_M_deallocate(__new_start, __len);
__throw_exception_again;
}
std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
_M_get_Tp_allocator());
_M_deallocate(this->_M_impl._M_start,
this->_M_impl._M_end_of_storage
- this->_M_impl._M_start);
this->_M_impl._M_start = __new_start;
this->_M_impl._M_finish = __new_finish;
this->_M_impl._M_end_of_storage = __new_start + __len;
}
}
template<typename _Tp, typename _Alloc>
void
vector<_Tp, _Alloc>::
_M_fill_insert(iterator __position, size_type __n, const value_type& __x)
{
if (__n != 0)
{
if (size_type(this->_M_impl._M_end_of_storage
- this->_M_impl._M_finish) >= __n)
{
value_type __x_copy = __x;
const size_type __elems_after = end() - __position;
pointer __old_finish(this->_M_impl._M_finish);
if (__elems_after > __n)
{
std::__uninitialized_move_a(this->_M_impl._M_finish - __n,
this->_M_impl._M_finish,
this->_M_impl._M_finish,
_M_get_Tp_allocator());
this->_M_impl._M_finish += __n;
_GLIBCXX_MOVE_BACKWARD3(__position.base(),
__old_finish - __n, __old_finish);
std::fill(__position.base(), __position.base() + __n,
__x_copy);
}
else
{
std::__uninitialized_fill_n_a(this->_M_impl._M_finish,
__n - __elems_after,
__x_copy,
_M_get_Tp_allocator());
this->_M_impl._M_finish += __n - __elems_after;
std::__uninitialized_move_a(__position.base(), __old_finish,
this->_M_impl._M_finish,
_M_get_Tp_allocator());
this->_M_impl._M_finish += __elems_after;
std::fill(__position.base(), __old_finish, __x_copy);
}
}
else
{
const size_type __len =
_M_check_len(__n, "vector::_M_fill_insert");
const size_type __elems_before = __position - begin();
pointer __new_start(this->_M_allocate(__len));
pointer __new_finish(__new_start);
__try
{
// See _M_insert_aux above.
std::__uninitialized_fill_n_a(__new_start + __elems_before,
__n, __x,
_M_get_Tp_allocator());
__new_finish = 0;
__new_finish =
std::__uninitialized_move_a(this->_M_impl._M_start,
__position.base(),
__new_start,
_M_get_Tp_allocator());
__new_finish += __n;
__new_finish =
std::__uninitialized_move_a(__position.base(),
this->_M_impl._M_finish,
__new_finish,
_M_get_Tp_allocator());
}
__catch(...)
{
if (!__new_finish)
std::_Destroy(__new_start + __elems_before,
__new_start + __elems_before + __n,
_M_get_Tp_allocator());
else
std::_Destroy(__new_start, __new_finish,
_M_get_Tp_allocator());
_M_deallocate(__new_start, __len);
__throw_exception_again;
}
std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
_M_get_Tp_allocator());
_M_deallocate(this->_M_impl._M_start,
this->_M_impl._M_end_of_storage
- this->_M_impl._M_start);
this->_M_impl._M_start = __new_start;
this->_M_impl._M_finish = __new_finish;
this->_M_impl._M_end_of_storage = __new_start + __len;
}
}
}
template<typename _Tp, typename _Alloc>
template<typename _InputIterator>
void
vector<_Tp, _Alloc>::
_M_range_insert(iterator __pos, _InputIterator __first,
_InputIterator __last, std::input_iterator_tag)
{
for (; __first != __last; ++__first)
{
__pos = insert(__pos, *__first);
++__pos;
}
}
template<typename _Tp, typename _Alloc>
template<typename _ForwardIterator>
void
vector<_Tp, _Alloc>::
_M_range_insert(iterator __position, _ForwardIterator __first,
_ForwardIterator __last, std::forward_iterator_tag)
{
if (__first != __last)
{
const size_type __n = std::distance(__first, __last);
if (size_type(this->_M_impl._M_end_of_storage
- this->_M_impl._M_finish) >= __n)
{
const size_type __elems_after = end() - __position;
pointer __old_finish(this->_M_impl._M_finish);
if (__elems_after > __n)
{
std::__uninitialized_move_a(this->_M_impl._M_finish - __n,
this->_M_impl._M_finish,
this->_M_impl._M_finish,
_M_get_Tp_allocator());
this->_M_impl._M_finish += __n;
_GLIBCXX_MOVE_BACKWARD3(__position.base(),
__old_finish - __n, __old_finish);
std::copy(__first, __last, __position);
}
else
{
_ForwardIterator __mid = __first;
std::advance(__mid, __elems_after);
std::__uninitialized_copy_a(__mid, __last,
this->_M_impl._M_finish,
_M_get_Tp_allocator());
this->_M_impl._M_finish += __n - __elems_after;
std::__uninitialized_move_a(__position.base(),
__old_finish,
this->_M_impl._M_finish,
_M_get_Tp_allocator());
this->_M_impl._M_finish += __elems_after;
std::copy(__first, __mid, __position);
}
}
else
{
const size_type __len =
_M_check_len(__n, "vector::_M_range_insert");
pointer __new_start(this->_M_allocate(__len));
pointer __new_finish(__new_start);
__try
{
__new_finish =
std::__uninitialized_move_a(this->_M_impl._M_start,
__position.base(),
__new_start,
_M_get_Tp_allocator());
__new_finish =
std::__uninitialized_copy_a(__first, __last,
__new_finish,
_M_get_Tp_allocator());
__new_finish =
std::__uninitialized_move_a(__position.base(),
this->_M_impl._M_finish,
__new_finish,
_M_get_Tp_allocator());
}
__catch(...)
{
std::_Destroy(__new_start, __new_finish,
_M_get_Tp_allocator());
_M_deallocate(__new_start, __len);
__throw_exception_again;
}
std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
_M_get_Tp_allocator());
_M_deallocate(this->_M_impl._M_start,
this->_M_impl._M_end_of_storage
- this->_M_impl._M_start);
this->_M_impl._M_start = __new_start;
this->_M_impl._M_finish = __new_finish;
this->_M_impl._M_end_of_storage = __new_start + __len;
}
}
}
// vector<bool>
template<typename _Alloc>
void
vector<bool, _Alloc>::
reserve(size_type __n)
{
if (__n > this->max_size())
__throw_length_error(__N("vector::reserve"));
if (this->capacity() < __n)
{
_Bit_type* __q = this->_M_allocate(__n);
this->_M_impl._M_finish = _M_copy_aligned(begin(), end(),
iterator(__q, 0));
this->_M_deallocate();
this->_M_impl._M_start = iterator(__q, 0);
this->_M_impl._M_end_of_storage = (__q + (__n + int(_S_word_bit) - 1)
/ int(_S_word_bit));
}
}
template<typename _Alloc>
void
vector<bool, _Alloc>::
_M_fill_insert(iterator __position, size_type __n, bool __x)
{
if (__n == 0)
return;
if (capacity() - size() >= __n)
{
std::copy_backward(__position, end(),
this->_M_impl._M_finish + difference_type(__n));
std::fill(__position, __position + difference_type(__n), __x);
this->_M_impl._M_finish += difference_type(__n);
}
else
{
const size_type __len =
_M_check_len(__n, "vector<bool>::_M_fill_insert");
_Bit_type * __q = this->_M_allocate(__len);
iterator __i = _M_copy_aligned(begin(), __position,
iterator(__q, 0));
std::fill(__i, __i + difference_type(__n), __x);
this->_M_impl._M_finish = std::copy(__position, end(),
__i + difference_type(__n));
this->_M_deallocate();
this->_M_impl._M_end_of_storage = (__q + ((__len
+ int(_S_word_bit) - 1)
/ int(_S_word_bit)));
this->_M_impl._M_start = iterator(__q, 0);
}
}
template<typename _Alloc>
template<typename _ForwardIterator>
void
vector<bool, _Alloc>::
_M_insert_range(iterator __position, _ForwardIterator __first,
_ForwardIterator __last, std::forward_iterator_tag)
{
if (__first != __last)
{
size_type __n = std::distance(__first, __last);
if (capacity() - size() >= __n)
{
std::copy_backward(__position, end(),
this->_M_impl._M_finish
+ difference_type(__n));
std::copy(__first, __last, __position);
this->_M_impl._M_finish += difference_type(__n);
}
else
{
const size_type __len =
_M_check_len(__n, "vector<bool>::_M_insert_range");
_Bit_type * __q = this->_M_allocate(__len);
iterator __i = _M_copy_aligned(begin(), __position,
iterator(__q, 0));
__i = std::copy(__first, __last, __i);
this->_M_impl._M_finish = std::copy(__position, end(), __i);
this->_M_deallocate();
this->_M_impl._M_end_of_storage = (__q
+ ((__len
+ int(_S_word_bit) - 1)
/ int(_S_word_bit)));
this->_M_impl._M_start = iterator(__q, 0);
}
}
}
template<typename _Alloc>
void
vector<bool, _Alloc>::
_M_insert_aux(iterator __position, bool __x)
{
if (this->_M_impl._M_finish._M_p != this->_M_impl._M_end_of_storage)
{
std::copy_backward(__position, this->_M_impl._M_finish,
this->_M_impl._M_finish + 1);
*__position = __x;
++this->_M_impl._M_finish;
}
else
{
const size_type __len =
_M_check_len(size_type(1), "vector<bool>::_M_insert_aux");
_Bit_type * __q = this->_M_allocate(__len);
iterator __i = _M_copy_aligned(begin(), __position,
iterator(__q, 0));
*__i++ = __x;
this->_M_impl._M_finish = std::copy(__position, end(), __i);
this->_M_deallocate();
this->_M_impl._M_end_of_storage = (__q + ((__len
+ int(_S_word_bit) - 1)
/ int(_S_word_bit)));
this->_M_impl._M_start = iterator(__q, 0);
}
}
_GLIBCXX_END_NESTED_NAMESPACE
#endif /* _VECTOR_TCC */
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