// Deque implementation -*- C++ -*-
-// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006
-// Free Software Foundation, Inc.
+// Copyright (C) 2001-2015 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)
+// 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,
// 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
-// USA.
+// 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.
-// 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.
+// 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/>.
/*
*
* purpose. It is provided "as is" without express or implied warranty.
*/
-/** @file stl_deque.h
+/** @file bits/stl_deque.h
* This is an internal header file, included by other library headers.
- * You should not attempt to use it directly.
+ * Do not attempt to use it directly. @headername{deque}
*/
-#ifndef _DEQUE_H
-#define _DEQUE_H 1
+#ifndef _STL_DEQUE_H
+#define _STL_DEQUE_H 1
#include <bits/concept_check.h>
#include <bits/stl_iterator_base_types.h>
#include <bits/stl_iterator_base_funcs.h>
+#if __cplusplus >= 201103L
+#include <initializer_list>
+#endif
-_GLIBCXX_BEGIN_NESTED_NAMESPACE(std, _GLIBCXX_STD)
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_CONTAINER
/**
- * @if maint
* @brief This function controls the size of memory nodes.
- * @param size The size of an element.
+ * @param __size The size of an element.
* @return The number (not byte size) of elements per node.
*
- * This function started off as a compiler kludge from SGI, but seems to
- * be a useful wrapper around a repeated constant expression. The '512' is
- * tuneable (and no other code needs to change), but no investigation has
- * been done since inheriting the SGI code.
- * @endif
+ * This function started off as a compiler kludge from SGI, but
+ * seems to be a useful wrapper around a repeated constant
+ * expression. The @b 512 is tunable (and no other code needs to
+ * change), but no investigation has been done since inheriting the
+ * SGI code. Touch _GLIBCXX_DEQUE_BUF_SIZE only if you know what
+ * you are doing, however: changing it breaks the binary
+ * compatibility!!
*/
- inline size_t
+
+#ifndef _GLIBCXX_DEQUE_BUF_SIZE
+#define _GLIBCXX_DEQUE_BUF_SIZE 512
+#endif
+
+ _GLIBCXX_CONSTEXPR inline size_t
__deque_buf_size(size_t __size)
- { return __size < 512 ? size_t(512 / __size) : size_t(1); }
+ { return (__size < _GLIBCXX_DEQUE_BUF_SIZE
+ ? size_t(_GLIBCXX_DEQUE_BUF_SIZE / __size) : size_t(1)); }
/**
* elements is done as offsets of either of those two, relying on
* operator overloading in this class.
*
- * @if maint
* All the functions are op overloads except for _M_set_node.
- * @endif
*/
template<typename _Tp, typename _Ref, typename _Ptr>
struct _Deque_iterator
{
+#if __cplusplus < 201103L
typedef _Deque_iterator<_Tp, _Tp&, _Tp*> iterator;
typedef _Deque_iterator<_Tp, const _Tp&, const _Tp*> const_iterator;
+ typedef _Tp* _Elt_pointer;
+ typedef _Tp** _Map_pointer;
+#else
+ private:
+ template<typename _Up>
+ using __ptr_to = typename pointer_traits<_Ptr>::template rebind<_Up>;
+ template<typename _CvTp>
+ using __iter = _Deque_iterator<_Tp, _CvTp&, __ptr_to<_CvTp>>;
+ public:
+ typedef __iter<_Tp> iterator;
+ typedef __iter<const _Tp> const_iterator;
+ typedef __ptr_to<_Tp> _Elt_pointer;
+ typedef __ptr_to<_Elt_pointer> _Map_pointer;
+#endif
- static size_t _S_buffer_size()
+ static size_t _S_buffer_size() _GLIBCXX_NOEXCEPT
{ return __deque_buf_size(sizeof(_Tp)); }
typedef std::random_access_iterator_tag iterator_category;
typedef _Ref reference;
typedef size_t size_type;
typedef ptrdiff_t difference_type;
- typedef _Tp** _Map_pointer;
typedef _Deque_iterator _Self;
- _Tp* _M_cur;
- _Tp* _M_first;
- _Tp* _M_last;
+ _Elt_pointer _M_cur;
+ _Elt_pointer _M_first;
+ _Elt_pointer _M_last;
_Map_pointer _M_node;
- _Deque_iterator(_Tp* __x, _Map_pointer __y)
+ _Deque_iterator(_Elt_pointer __x, _Map_pointer __y) _GLIBCXX_NOEXCEPT
: _M_cur(__x), _M_first(*__y),
- _M_last(*__y + _S_buffer_size()), _M_node(__y) {}
+ _M_last(*__y + _S_buffer_size()), _M_node(__y) { }
- _Deque_iterator() : _M_cur(0), _M_first(0), _M_last(0), _M_node(0) {}
+ _Deque_iterator() _GLIBCXX_NOEXCEPT
+ : _M_cur(), _M_first(), _M_last(), _M_node() { }
- _Deque_iterator(const iterator& __x)
+ _Deque_iterator(const iterator& __x) _GLIBCXX_NOEXCEPT
: _M_cur(__x._M_cur), _M_first(__x._M_first),
- _M_last(__x._M_last), _M_node(__x._M_node) {}
+ _M_last(__x._M_last), _M_node(__x._M_node) { }
+
+ iterator
+ _M_const_cast() const _GLIBCXX_NOEXCEPT
+ { return iterator(_M_cur, _M_node); }
reference
- operator*() const
+ operator*() const _GLIBCXX_NOEXCEPT
{ return *_M_cur; }
pointer
- operator->() const
+ operator->() const _GLIBCXX_NOEXCEPT
{ return _M_cur; }
_Self&
- operator++()
+ operator++() _GLIBCXX_NOEXCEPT
{
++_M_cur;
if (_M_cur == _M_last)
}
_Self
- operator++(int)
+ operator++(int) _GLIBCXX_NOEXCEPT
{
_Self __tmp = *this;
++*this;
}
_Self&
- operator--()
+ operator--() _GLIBCXX_NOEXCEPT
{
if (_M_cur == _M_first)
{
}
_Self
- operator--(int)
+ operator--(int) _GLIBCXX_NOEXCEPT
{
_Self __tmp = *this;
--*this;
}
_Self&
- operator+=(difference_type __n)
+ operator+=(difference_type __n) _GLIBCXX_NOEXCEPT
{
const difference_type __offset = __n + (_M_cur - _M_first);
if (__offset >= 0 && __offset < difference_type(_S_buffer_size()))
}
_Self
- operator+(difference_type __n) const
+ operator+(difference_type __n) const _GLIBCXX_NOEXCEPT
{
_Self __tmp = *this;
return __tmp += __n;
}
_Self&
- operator-=(difference_type __n)
+ operator-=(difference_type __n) _GLIBCXX_NOEXCEPT
{ return *this += -__n; }
_Self
- operator-(difference_type __n) const
+ operator-(difference_type __n) const _GLIBCXX_NOEXCEPT
{
_Self __tmp = *this;
return __tmp -= __n;
}
reference
- operator[](difference_type __n) const
+ operator[](difference_type __n) const _GLIBCXX_NOEXCEPT
{ return *(*this + __n); }
- /** @if maint
+ /**
* Prepares to traverse new_node. Sets everything except
* _M_cur, which should therefore be set by the caller
* immediately afterwards, based on _M_first and _M_last.
- * @endif
*/
void
- _M_set_node(_Map_pointer __new_node)
+ _M_set_node(_Map_pointer __new_node) _GLIBCXX_NOEXCEPT
{
_M_node = __new_node;
_M_first = *__new_node;
template<typename _Tp, typename _Ref, typename _Ptr>
inline bool
operator==(const _Deque_iterator<_Tp, _Ref, _Ptr>& __x,
- const _Deque_iterator<_Tp, _Ref, _Ptr>& __y)
+ const _Deque_iterator<_Tp, _Ref, _Ptr>& __y) _GLIBCXX_NOEXCEPT
{ return __x._M_cur == __y._M_cur; }
template<typename _Tp, typename _RefL, typename _PtrL,
typename _RefR, typename _PtrR>
inline bool
operator==(const _Deque_iterator<_Tp, _RefL, _PtrL>& __x,
- const _Deque_iterator<_Tp, _RefR, _PtrR>& __y)
+ const _Deque_iterator<_Tp, _RefR, _PtrR>& __y) _GLIBCXX_NOEXCEPT
{ return __x._M_cur == __y._M_cur; }
template<typename _Tp, typename _Ref, typename _Ptr>
inline bool
operator!=(const _Deque_iterator<_Tp, _Ref, _Ptr>& __x,
- const _Deque_iterator<_Tp, _Ref, _Ptr>& __y)
+ const _Deque_iterator<_Tp, _Ref, _Ptr>& __y) _GLIBCXX_NOEXCEPT
{ return !(__x == __y); }
template<typename _Tp, typename _RefL, typename _PtrL,
typename _RefR, typename _PtrR>
inline bool
operator!=(const _Deque_iterator<_Tp, _RefL, _PtrL>& __x,
- const _Deque_iterator<_Tp, _RefR, _PtrR>& __y)
+ const _Deque_iterator<_Tp, _RefR, _PtrR>& __y) _GLIBCXX_NOEXCEPT
{ return !(__x == __y); }
template<typename _Tp, typename _Ref, typename _Ptr>
inline bool
operator<(const _Deque_iterator<_Tp, _Ref, _Ptr>& __x,
- const _Deque_iterator<_Tp, _Ref, _Ptr>& __y)
+ const _Deque_iterator<_Tp, _Ref, _Ptr>& __y) _GLIBCXX_NOEXCEPT
{ return (__x._M_node == __y._M_node) ? (__x._M_cur < __y._M_cur)
: (__x._M_node < __y._M_node); }
typename _RefR, typename _PtrR>
inline bool
operator<(const _Deque_iterator<_Tp, _RefL, _PtrL>& __x,
- const _Deque_iterator<_Tp, _RefR, _PtrR>& __y)
+ const _Deque_iterator<_Tp, _RefR, _PtrR>& __y) _GLIBCXX_NOEXCEPT
{ return (__x._M_node == __y._M_node) ? (__x._M_cur < __y._M_cur)
: (__x._M_node < __y._M_node); }
template<typename _Tp, typename _Ref, typename _Ptr>
inline bool
operator>(const _Deque_iterator<_Tp, _Ref, _Ptr>& __x,
- const _Deque_iterator<_Tp, _Ref, _Ptr>& __y)
+ const _Deque_iterator<_Tp, _Ref, _Ptr>& __y) _GLIBCXX_NOEXCEPT
{ return __y < __x; }
template<typename _Tp, typename _RefL, typename _PtrL,
typename _RefR, typename _PtrR>
inline bool
operator>(const _Deque_iterator<_Tp, _RefL, _PtrL>& __x,
- const _Deque_iterator<_Tp, _RefR, _PtrR>& __y)
+ const _Deque_iterator<_Tp, _RefR, _PtrR>& __y) _GLIBCXX_NOEXCEPT
{ return __y < __x; }
template<typename _Tp, typename _Ref, typename _Ptr>
inline bool
operator<=(const _Deque_iterator<_Tp, _Ref, _Ptr>& __x,
- const _Deque_iterator<_Tp, _Ref, _Ptr>& __y)
+ const _Deque_iterator<_Tp, _Ref, _Ptr>& __y) _GLIBCXX_NOEXCEPT
{ return !(__y < __x); }
template<typename _Tp, typename _RefL, typename _PtrL,
typename _RefR, typename _PtrR>
inline bool
operator<=(const _Deque_iterator<_Tp, _RefL, _PtrL>& __x,
- const _Deque_iterator<_Tp, _RefR, _PtrR>& __y)
+ const _Deque_iterator<_Tp, _RefR, _PtrR>& __y) _GLIBCXX_NOEXCEPT
{ return !(__y < __x); }
template<typename _Tp, typename _Ref, typename _Ptr>
inline bool
operator>=(const _Deque_iterator<_Tp, _Ref, _Ptr>& __x,
- const _Deque_iterator<_Tp, _Ref, _Ptr>& __y)
+ const _Deque_iterator<_Tp, _Ref, _Ptr>& __y) _GLIBCXX_NOEXCEPT
{ return !(__x < __y); }
template<typename _Tp, typename _RefL, typename _PtrL,
typename _RefR, typename _PtrR>
inline bool
operator>=(const _Deque_iterator<_Tp, _RefL, _PtrL>& __x,
- const _Deque_iterator<_Tp, _RefR, _PtrR>& __y)
+ const _Deque_iterator<_Tp, _RefR, _PtrR>& __y) _GLIBCXX_NOEXCEPT
{ return !(__x < __y); }
// _GLIBCXX_RESOLVE_LIB_DEFECTS
template<typename _Tp, typename _Ref, typename _Ptr>
inline typename _Deque_iterator<_Tp, _Ref, _Ptr>::difference_type
operator-(const _Deque_iterator<_Tp, _Ref, _Ptr>& __x,
- const _Deque_iterator<_Tp, _Ref, _Ptr>& __y)
+ const _Deque_iterator<_Tp, _Ref, _Ptr>& __y) _GLIBCXX_NOEXCEPT
{
return typename _Deque_iterator<_Tp, _Ref, _Ptr>::difference_type
(_Deque_iterator<_Tp, _Ref, _Ptr>::_S_buffer_size())
typename _RefR, typename _PtrR>
inline typename _Deque_iterator<_Tp, _RefL, _PtrL>::difference_type
operator-(const _Deque_iterator<_Tp, _RefL, _PtrL>& __x,
- const _Deque_iterator<_Tp, _RefR, _PtrR>& __y)
+ const _Deque_iterator<_Tp, _RefR, _PtrR>& __y) _GLIBCXX_NOEXCEPT
{
return typename _Deque_iterator<_Tp, _RefL, _PtrL>::difference_type
(_Deque_iterator<_Tp, _RefL, _PtrL>::_S_buffer_size())
template<typename _Tp, typename _Ref, typename _Ptr>
inline _Deque_iterator<_Tp, _Ref, _Ptr>
operator+(ptrdiff_t __n, const _Deque_iterator<_Tp, _Ref, _Ptr>& __x)
+ _GLIBCXX_NOEXCEPT
{ return __x + __n; }
+ template<typename _Tp>
+ void
+ fill(const _Deque_iterator<_Tp, _Tp&, _Tp*>&,
+ const _Deque_iterator<_Tp, _Tp&, _Tp*>&, const _Tp&);
+
+ template<typename _Tp>
+ _Deque_iterator<_Tp, _Tp&, _Tp*>
+ copy(_Deque_iterator<_Tp, const _Tp&, const _Tp*>,
+ _Deque_iterator<_Tp, const _Tp&, const _Tp*>,
+ _Deque_iterator<_Tp, _Tp&, _Tp*>);
+
+ template<typename _Tp>
+ inline _Deque_iterator<_Tp, _Tp&, _Tp*>
+ copy(_Deque_iterator<_Tp, _Tp&, _Tp*> __first,
+ _Deque_iterator<_Tp, _Tp&, _Tp*> __last,
+ _Deque_iterator<_Tp, _Tp&, _Tp*> __result)
+ { return std::copy(_Deque_iterator<_Tp, const _Tp&, const _Tp*>(__first),
+ _Deque_iterator<_Tp, const _Tp&, const _Tp*>(__last),
+ __result); }
+
+ template<typename _Tp>
+ _Deque_iterator<_Tp, _Tp&, _Tp*>
+ copy_backward(_Deque_iterator<_Tp, const _Tp&, const _Tp*>,
+ _Deque_iterator<_Tp, const _Tp&, const _Tp*>,
+ _Deque_iterator<_Tp, _Tp&, _Tp*>);
+
+ template<typename _Tp>
+ inline _Deque_iterator<_Tp, _Tp&, _Tp*>
+ copy_backward(_Deque_iterator<_Tp, _Tp&, _Tp*> __first,
+ _Deque_iterator<_Tp, _Tp&, _Tp*> __last,
+ _Deque_iterator<_Tp, _Tp&, _Tp*> __result)
+ { return std::copy_backward(_Deque_iterator<_Tp,
+ const _Tp&, const _Tp*>(__first),
+ _Deque_iterator<_Tp,
+ const _Tp&, const _Tp*>(__last),
+ __result); }
+
+#if __cplusplus >= 201103L
+ template<typename _Tp>
+ _Deque_iterator<_Tp, _Tp&, _Tp*>
+ move(_Deque_iterator<_Tp, const _Tp&, const _Tp*>,
+ _Deque_iterator<_Tp, const _Tp&, const _Tp*>,
+ _Deque_iterator<_Tp, _Tp&, _Tp*>);
+
+ template<typename _Tp>
+ inline _Deque_iterator<_Tp, _Tp&, _Tp*>
+ move(_Deque_iterator<_Tp, _Tp&, _Tp*> __first,
+ _Deque_iterator<_Tp, _Tp&, _Tp*> __last,
+ _Deque_iterator<_Tp, _Tp&, _Tp*> __result)
+ { return std::move(_Deque_iterator<_Tp, const _Tp&, const _Tp*>(__first),
+ _Deque_iterator<_Tp, const _Tp&, const _Tp*>(__last),
+ __result); }
+
+ template<typename _Tp>
+ _Deque_iterator<_Tp, _Tp&, _Tp*>
+ move_backward(_Deque_iterator<_Tp, const _Tp&, const _Tp*>,
+ _Deque_iterator<_Tp, const _Tp&, const _Tp*>,
+ _Deque_iterator<_Tp, _Tp&, _Tp*>);
+
+ template<typename _Tp>
+ inline _Deque_iterator<_Tp, _Tp&, _Tp*>
+ move_backward(_Deque_iterator<_Tp, _Tp&, _Tp*> __first,
+ _Deque_iterator<_Tp, _Tp&, _Tp*> __last,
+ _Deque_iterator<_Tp, _Tp&, _Tp*> __result)
+ { return std::move_backward(_Deque_iterator<_Tp,
+ const _Tp&, const _Tp*>(__first),
+ _Deque_iterator<_Tp,
+ const _Tp&, const _Tp*>(__last),
+ __result); }
+#endif
+
/**
- * @if maint
* Deque base class. This class provides the unified face for %deque's
* allocation. This class's constructor and destructor allocate and
* deallocate (but do not initialize) storage. This makes %exception
* Nothing in this class ever constructs or destroys an actual Tp element.
* (Deque handles that itself.) Only/All memory management is performed
* here.
- * @endif
*/
template<typename _Tp, typename _Alloc>
class _Deque_base
{
+ protected:
+ typedef typename __gnu_cxx::__alloc_traits<_Alloc>::template
+ rebind<_Tp>::other _Tp_alloc_type;
+ typedef __gnu_cxx::__alloc_traits<_Tp_alloc_type> _Alloc_traits;
+
+#if __cplusplus < 201103L
+ typedef _Tp* _Ptr;
+ typedef const _Tp* _Ptr_const;
+#else
+ typedef typename _Alloc_traits::pointer _Ptr;
+ typedef typename _Alloc_traits::const_pointer _Ptr_const;
+#endif
+
+ typedef typename _Alloc_traits::template rebind<_Ptr>::other
+ _Map_alloc_type;
+ typedef __gnu_cxx::__alloc_traits<_Map_alloc_type> _Map_alloc_traits;
+
public:
typedef _Alloc allocator_type;
+ typedef typename _Alloc_traits::size_type size_type;
allocator_type
- get_allocator() const
+ get_allocator() const _GLIBCXX_NOEXCEPT
{ return allocator_type(_M_get_Tp_allocator()); }
- typedef _Deque_iterator<_Tp, _Tp&, _Tp*> iterator;
- typedef _Deque_iterator<_Tp, const _Tp&, const _Tp*> const_iterator;
+ typedef _Deque_iterator<_Tp, _Tp&, _Ptr> iterator;
+ typedef _Deque_iterator<_Tp, const _Tp&, _Ptr_const> const_iterator;
+
+ _Deque_base()
+ : _M_impl()
+ { _M_initialize_map(0); }
+
+ _Deque_base(size_t __num_elements)
+ : _M_impl()
+ { _M_initialize_map(__num_elements); }
_Deque_base(const allocator_type& __a, size_t __num_elements)
: _M_impl(__a)
_Deque_base(const allocator_type& __a)
: _M_impl(__a)
+ { /* Caller must initialize map. */ }
+
+#if __cplusplus >= 201103L
+ _Deque_base(_Deque_base&& __x, false_type)
+ : _M_impl(__x._M_move_impl())
+ { }
+
+ _Deque_base(_Deque_base&& __x, true_type)
+ : _M_impl(std::move(__x._M_get_Tp_allocator()))
+ {
+ _M_initialize_map(0);
+ if (__x._M_impl._M_map)
+ this->_M_impl._M_swap_data(__x._M_impl);
+ }
+
+ _Deque_base(_Deque_base&& __x)
+ : _Deque_base(std::move(__x),
+ __gnu_cxx::__allocator_always_compares_equal<_Alloc>{})
{ }
- ~_Deque_base();
+ _Deque_base(_Deque_base&& __x, const allocator_type& __a, size_type __n)
+ : _M_impl(__a)
+ {
+ if (__x.get_allocator() == __a)
+ {
+ if (__x._M_impl._M_map)
+ {
+ _M_initialize_map(0);
+ this->_M_impl._M_swap_data(__x._M_impl);
+ }
+ }
+ else
+ {
+ _M_initialize_map(__n);
+ }
+ }
+#endif
+
+ ~_Deque_base() _GLIBCXX_NOEXCEPT;
protected:
+ typedef typename iterator::_Map_pointer _Map_pointer;
+
//This struct encapsulates the implementation of the std::deque
//standard container and at the same time makes use of the EBO
//for empty allocators.
- typedef typename _Alloc::template rebind<_Tp*>::other _Map_alloc_type;
-
- typedef typename _Alloc::template rebind<_Tp>::other _Tp_alloc_type;
-
struct _Deque_impl
: public _Tp_alloc_type
{
- _Tp** _M_map;
+ _Map_pointer _M_map;
size_t _M_map_size;
iterator _M_start;
iterator _M_finish;
- _Deque_impl(const _Tp_alloc_type& __a)
- : _Tp_alloc_type(__a), _M_map(0), _M_map_size(0),
+ _Deque_impl()
+ : _Tp_alloc_type(), _M_map(), _M_map_size(0),
_M_start(), _M_finish()
{ }
+
+ _Deque_impl(const _Tp_alloc_type& __a) _GLIBCXX_NOEXCEPT
+ : _Tp_alloc_type(__a), _M_map(), _M_map_size(0),
+ _M_start(), _M_finish()
+ { }
+
+#if __cplusplus >= 201103L
+ _Deque_impl(_Deque_impl&&) = default;
+
+ _Deque_impl(_Tp_alloc_type&& __a) noexcept
+ : _Tp_alloc_type(std::move(__a)), _M_map(), _M_map_size(0),
+ _M_start(), _M_finish()
+ { }
+#endif
+
+ void _M_swap_data(_Deque_impl& __x) _GLIBCXX_NOEXCEPT
+ {
+ using std::swap;
+ swap(this->_M_start, __x._M_start);
+ swap(this->_M_finish, __x._M_finish);
+ swap(this->_M_map, __x._M_map);
+ swap(this->_M_map_size, __x._M_map_size);
+ }
};
_Tp_alloc_type&
- _M_get_Tp_allocator()
+ _M_get_Tp_allocator() _GLIBCXX_NOEXCEPT
{ return *static_cast<_Tp_alloc_type*>(&this->_M_impl); }
const _Tp_alloc_type&
- _M_get_Tp_allocator() const
+ _M_get_Tp_allocator() const _GLIBCXX_NOEXCEPT
{ return *static_cast<const _Tp_alloc_type*>(&this->_M_impl); }
_Map_alloc_type
- _M_get_map_allocator() const
+ _M_get_map_allocator() const _GLIBCXX_NOEXCEPT
{ return _Map_alloc_type(_M_get_Tp_allocator()); }
- _Tp*
+ _Ptr
_M_allocate_node()
{
- return _M_impl._Tp_alloc_type::allocate(__deque_buf_size(sizeof(_Tp)));
+ typedef __gnu_cxx::__alloc_traits<_Tp_alloc_type> _Traits;
+ return _Traits::allocate(_M_impl, __deque_buf_size(sizeof(_Tp)));
}
void
- _M_deallocate_node(_Tp* __p)
+ _M_deallocate_node(_Ptr __p) _GLIBCXX_NOEXCEPT
{
- _M_impl._Tp_alloc_type::deallocate(__p, __deque_buf_size(sizeof(_Tp)));
+ typedef __gnu_cxx::__alloc_traits<_Tp_alloc_type> _Traits;
+ _Traits::deallocate(_M_impl, __p, __deque_buf_size(sizeof(_Tp)));
}
- _Tp**
+ _Map_pointer
_M_allocate_map(size_t __n)
- { return _M_get_map_allocator().allocate(__n); }
+ {
+ _Map_alloc_type __map_alloc = _M_get_map_allocator();
+ return _Map_alloc_traits::allocate(__map_alloc, __n);
+ }
void
- _M_deallocate_map(_Tp** __p, size_t __n)
- { _M_get_map_allocator().deallocate(__p, __n); }
+ _M_deallocate_map(_Map_pointer __p, size_t __n) _GLIBCXX_NOEXCEPT
+ {
+ _Map_alloc_type __map_alloc = _M_get_map_allocator();
+ _Map_alloc_traits::deallocate(__map_alloc, __p, __n);
+ }
protected:
void _M_initialize_map(size_t);
- void _M_create_nodes(_Tp** __nstart, _Tp** __nfinish);
- void _M_destroy_nodes(_Tp** __nstart, _Tp** __nfinish);
+ void _M_create_nodes(_Map_pointer __nstart, _Map_pointer __nfinish);
+ void _M_destroy_nodes(_Map_pointer __nstart,
+ _Map_pointer __nfinish) _GLIBCXX_NOEXCEPT;
enum { _S_initial_map_size = 8 };
_Deque_impl _M_impl;
+
+#if __cplusplus >= 201103L
+ private:
+ _Deque_impl
+ _M_move_impl()
+ {
+ if (!_M_impl._M_map)
+ return std::move(_M_impl);
+
+ // Create a copy of the current allocator.
+ _Tp_alloc_type __alloc{_M_get_Tp_allocator()};
+ // Put that copy in a moved-from state.
+ _Tp_alloc_type __sink __attribute((__unused__)) {std::move(__alloc)};
+ // Create an empty map that allocates using the moved-from allocator.
+ _Deque_base __empty{__alloc};
+ // Now safe to modify current allocator and perform non-throwing swaps.
+ _Deque_impl __ret{std::move(_M_get_Tp_allocator())};
+ _M_impl._M_swap_data(__ret);
+ _M_impl._M_swap_data(__empty._M_impl);
+ return __ret;
+ }
+#endif
};
template<typename _Tp, typename _Alloc>
_Deque_base<_Tp, _Alloc>::
- ~_Deque_base()
+ ~_Deque_base() _GLIBCXX_NOEXCEPT
{
if (this->_M_impl._M_map)
{
}
/**
- * @if maint
* @brief Layout storage.
- * @param num_elements The count of T's for which to allocate space
- * at first.
+ * @param __num_elements The count of T's for which to allocate space
+ * at first.
* @return Nothing.
*
* The initial underlying memory layout is a bit complicated...
- * @endif
*/
template<typename _Tp, typename _Alloc>
void
// the beginning of _M_map, but for small maps it may be as far in as
// _M_map+3.
- _Tp** __nstart = (this->_M_impl._M_map
- + (this->_M_impl._M_map_size - __num_nodes) / 2);
- _Tp** __nfinish = __nstart + __num_nodes;
+ _Map_pointer __nstart = (this->_M_impl._M_map
+ + (this->_M_impl._M_map_size - __num_nodes) / 2);
+ _Map_pointer __nfinish = __nstart + __num_nodes;
- try
+ __try
{ _M_create_nodes(__nstart, __nfinish); }
- catch(...)
+ __catch(...)
{
_M_deallocate_map(this->_M_impl._M_map, this->_M_impl._M_map_size);
- this->_M_impl._M_map = 0;
+ this->_M_impl._M_map = _Map_pointer();
this->_M_impl._M_map_size = 0;
__throw_exception_again;
}
template<typename _Tp, typename _Alloc>
void
_Deque_base<_Tp, _Alloc>::
- _M_create_nodes(_Tp** __nstart, _Tp** __nfinish)
+ _M_create_nodes(_Map_pointer __nstart, _Map_pointer __nfinish)
{
- _Tp** __cur;
- try
+ _Map_pointer __cur;
+ __try
{
for (__cur = __nstart; __cur < __nfinish; ++__cur)
*__cur = this->_M_allocate_node();
}
- catch(...)
+ __catch(...)
{
_M_destroy_nodes(__nstart, __cur);
__throw_exception_again;
template<typename _Tp, typename _Alloc>
void
_Deque_base<_Tp, _Alloc>::
- _M_destroy_nodes(_Tp** __nstart, _Tp** __nfinish)
+ _M_destroy_nodes(_Map_pointer __nstart,
+ _Map_pointer __nfinish) _GLIBCXX_NOEXCEPT
{
- for (_Tp** __n = __nstart; __n < __nfinish; ++__n)
+ for (_Map_pointer __n = __nstart; __n < __nfinish; ++__n)
_M_deallocate_node(*__n);
}
* @brief A standard container using fixed-size memory allocation and
* constant-time manipulation of elements at either end.
*
- * @ingroup Containers
- * @ingroup Sequences
+ * @ingroup sequences
+ *
+ * @tparam _Tp Type of element.
+ * @tparam _Alloc Allocator type, defaults to allocator<_Tp>.
*
* Meets the requirements of a <a href="tables.html#65">container</a>, a
* <a href="tables.html#66">reversible container</a>, and a
* out to violate the C++ standard (it can be detected using template
* template parameters), and it was removed.
*
- * @if maint
* Here's how a deque<Tp> manages memory. Each deque has 4 members:
*
* - Tp** _M_map
* - iterator _M_start, _M_finish
*
* map_size is at least 8. %map is an array of map_size
- * pointers-to-"nodes". (The name %map has nothing to do with the
- * std::map class, and "nodes" should not be confused with
- * std::list's usage of "node".)
+ * pointers-to-@a nodes. (The name %map has nothing to do with the
+ * std::map class, and @b nodes should not be confused with
+ * std::list's usage of @a node.)
*
- * A "node" has no specific type name as such, but it is referred
- * to as "node" in this file. It is a simple array-of-Tp. If Tp
+ * A @a node has no specific type name as such, but it is referred
+ * to as @a node in this file. It is a simple array-of-Tp. If Tp
* is very large, there will be one Tp element per node (i.e., an
- * "array" of one). For non-huge Tp's, node size is inversely
+ * @a array of one). For non-huge Tp's, node size is inversely
* related to Tp size: the larger the Tp, the fewer Tp's will fit
* in a node. The goal here is to keep the total size of a node
* relatively small and constant over different Tp's, to improve
* will be unused. This same situation will arise as the %map
* grows: available %map pointers, if any, will be on the ends. As
* new nodes are created, only a subset of the %map's pointers need
- * to be copied "outward".
+ * to be copied @a outward.
*
* Class invariants:
* - For any nonsingular iterator i:
* node if and only if the pointer is in the range
* [start.node, finish.node].
*
- * Here's the magic: nothing in deque is "aware" of the discontiguous
+ * Here's the magic: nothing in deque is @b aware of the discontiguous
* storage!
*
* The memory setup and layout occurs in the parent, _Base, and the iterator
- * class is entirely responsible for "leaping" from one node to the next.
+ * class is entirely responsible for @a leaping from one node to the next.
* All the implementation routines for deque itself work only through the
* start and finish iterators. This keeps the routines simple and sane,
* and we can use other standard algorithms as well.
- * @endif
*/
template<typename _Tp, typename _Alloc = std::allocator<_Tp> >
class deque : protected _Deque_base<_Tp, _Alloc>
__glibcxx_class_requires(_Tp, _SGIAssignableConcept)
__glibcxx_class_requires2(_Tp, _Alloc_value_type, _SameTypeConcept)
- typedef _Deque_base<_Tp, _Alloc> _Base;
- typedef typename _Base::_Tp_alloc_type _Tp_alloc_type;
+ typedef _Deque_base<_Tp, _Alloc> _Base;
+ typedef typename _Base::_Tp_alloc_type _Tp_alloc_type;
+ typedef typename _Base::_Alloc_traits _Alloc_traits;
+ typedef typename _Base::_Map_pointer _Map_pointer;
public:
typedef _Tp value_type;
- typedef typename _Tp_alloc_type::pointer pointer;
- typedef typename _Tp_alloc_type::const_pointer const_pointer;
- typedef typename _Tp_alloc_type::reference reference;
- typedef typename _Tp_alloc_type::const_reference const_reference;
+ typedef typename _Alloc_traits::pointer pointer;
+ typedef typename _Alloc_traits::const_pointer const_pointer;
+ typedef typename _Alloc_traits::reference reference;
+ typedef typename _Alloc_traits::const_reference const_reference;
typedef typename _Base::iterator iterator;
typedef typename _Base::const_iterator const_iterator;
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
typedef _Alloc allocator_type;
protected:
- typedef pointer* _Map_pointer;
-
- static size_t _S_buffer_size()
+ static size_t _S_buffer_size() _GLIBCXX_NOEXCEPT
{ return __deque_buf_size(sizeof(_Tp)); }
// Functions controlling memory layout, and nothing else.
using _Base::_M_deallocate_map;
using _Base::_M_get_Tp_allocator;
- /** @if maint
- * A total of four data members accumulated down the heirarchy.
+ /**
+ * A total of four data members accumulated down the hierarchy.
* May be accessed via _M_impl.*
- * @endif
*/
using _Base::_M_impl;
public:
// [23.2.1.1] construct/copy/destroy
// (assign() and get_allocator() are also listed in this section)
+
/**
- * @brief Default constructor creates no elements.
+ * @brief Creates a %deque with no elements.
+ */
+ deque() : _Base() { }
+
+ /**
+ * @brief Creates a %deque with no elements.
+ * @param __a An allocator object.
*/
explicit
- deque(const allocator_type& __a = allocator_type())
- : _Base(__a, 0) {}
+ deque(const allocator_type& __a)
+ : _Base(__a, 0) { }
+#if __cplusplus >= 201103L
/**
- * @brief Create a %deque with copies of an exemplar element.
- * @param n The number of elements to initially create.
- * @param value An element to copy.
+ * @brief Creates a %deque with default constructed elements.
+ * @param __n The number of elements to initially create.
*
- * This constructor fills the %deque with @a n copies of @a value.
+ * This constructor fills the %deque with @a n default
+ * constructed elements.
+ */
+ explicit
+ deque(size_type __n, const allocator_type& __a = allocator_type())
+ : _Base(__a, __n)
+ { _M_default_initialize(); }
+
+ /**
+ * @brief Creates a %deque with copies of an exemplar element.
+ * @param __n The number of elements to initially create.
+ * @param __value An element to copy.
+ * @param __a An allocator.
+ *
+ * This constructor fills the %deque with @a __n copies of @a __value.
+ */
+ deque(size_type __n, const value_type& __value,
+ const allocator_type& __a = allocator_type())
+ : _Base(__a, __n)
+ { _M_fill_initialize(__value); }
+#else
+ /**
+ * @brief Creates a %deque with copies of an exemplar element.
+ * @param __n The number of elements to initially create.
+ * @param __value An element to copy.
+ * @param __a An allocator.
+ *
+ * This constructor fills the %deque with @a __n copies of @a __value.
*/
explicit
deque(size_type __n, const value_type& __value = value_type(),
const allocator_type& __a = allocator_type())
: _Base(__a, __n)
{ _M_fill_initialize(__value); }
+#endif
/**
* @brief %Deque copy constructor.
- * @param x A %deque of identical element and allocator types.
+ * @param __x A %deque of identical element and allocator types.
*
* The newly-created %deque uses a copy of the allocation object used
- * by @a x.
+ * by @a __x.
*/
deque(const deque& __x)
- : _Base(__x._M_get_Tp_allocator(), __x.size())
+ : _Base(_Alloc_traits::_S_select_on_copy(__x._M_get_Tp_allocator()),
+ __x.size())
{ std::__uninitialized_copy_a(__x.begin(), __x.end(),
this->_M_impl._M_start,
_M_get_Tp_allocator()); }
+#if __cplusplus >= 201103L
+ /**
+ * @brief %Deque move constructor.
+ * @param __x A %deque of identical element and allocator types.
+ *
+ * The newly-created %deque contains the exact contents of @a __x.
+ * The contents of @a __x are a valid, but unspecified %deque.
+ */
+ deque(deque&& __x)
+ : _Base(std::move(__x)) { }
+
+ /// Copy constructor with alternative allocator
+ deque(const deque& __x, const allocator_type& __a)
+ : _Base(__a, __x.size())
+ { std::__uninitialized_copy_a(__x.begin(), __x.end(),
+ this->_M_impl._M_start,
+ _M_get_Tp_allocator()); }
+
+ /// Move constructor with alternative allocator
+ deque(deque&& __x, const allocator_type& __a)
+ : _Base(std::move(__x), __a, __x.size())
+ {
+ if (__x.get_allocator() != __a)
+ {
+ std::__uninitialized_move_a(__x.begin(), __x.end(),
+ this->_M_impl._M_start,
+ _M_get_Tp_allocator());
+ __x.clear();
+ }
+ }
+
+ /**
+ * @brief Builds a %deque from an initializer list.
+ * @param __l An initializer_list.
+ * @param __a An allocator object.
+ *
+ * Create a %deque consisting of copies of the elements in the
+ * initializer_list @a __l.
+ *
+ * This will call the element type's copy constructor N times
+ * (where N is __l.size()) and do no memory reallocation.
+ */
+ deque(initializer_list<value_type> __l,
+ const allocator_type& __a = allocator_type())
+ : _Base(__a)
+ {
+ _M_range_initialize(__l.begin(), __l.end(),
+ random_access_iterator_tag());
+ }
+#endif
+
/**
* @brief Builds a %deque from a range.
- * @param first An input iterator.
- * @param last An input iterator.
+ * @param __first An input iterator.
+ * @param __last An input iterator.
+ * @param __a An allocator object.
*
- * Create a %deque consisting of copies of the elements from [first,
- * last).
+ * Create a %deque consisting of copies of the elements from [__first,
+ * __last).
*
* If the iterators are forward, bidirectional, or random-access, then
* this will call the elements' copy constructor N times (where N is
- * distance(first,last)) and do no memory reallocation. But if only
+ * distance(__first,__last)) and do no memory reallocation. But if only
* input iterators are used, then this will do at most 2N calls to the
* copy constructor, and logN memory reallocations.
*/
+#if __cplusplus >= 201103L
+ template<typename _InputIterator,
+ typename = std::_RequireInputIter<_InputIterator>>
+ deque(_InputIterator __first, _InputIterator __last,
+ const allocator_type& __a = allocator_type())
+ : _Base(__a)
+ { _M_initialize_dispatch(__first, __last, __false_type()); }
+#else
template<typename _InputIterator>
deque(_InputIterator __first, _InputIterator __last,
const allocator_type& __a = allocator_type())
typedef typename std::__is_integer<_InputIterator>::__type _Integral;
_M_initialize_dispatch(__first, __last, _Integral());
}
+#endif
/**
* The dtor only erases the elements, and note that if the elements
* themselves are pointers, the pointed-to memory is not touched in any
- * way. Managing the pointer is the user's responsibilty.
+ * way. Managing the pointer is the user's responsibility.
*/
~deque()
{ _M_destroy_data(begin(), end(), _M_get_Tp_allocator()); }
/**
* @brief %Deque assignment operator.
- * @param x A %deque of identical element and allocator types.
+ * @param __x A %deque of identical element and allocator types.
*
* All the elements of @a x are copied, but unlike the copy constructor,
* the allocator object is not copied.
deque&
operator=(const deque& __x);
+#if __cplusplus >= 201103L
+ /**
+ * @brief %Deque move assignment operator.
+ * @param __x A %deque of identical element and allocator types.
+ *
+ * The contents of @a __x are moved into this deque (without copying,
+ * if the allocators permit it).
+ * @a __x is a valid, but unspecified %deque.
+ */
+ deque&
+ operator=(deque&& __x) noexcept(_Alloc_traits::_S_always_equal())
+ {
+ constexpr bool __always_equal = _Alloc_traits::_S_always_equal();
+ _M_move_assign1(std::move(__x),
+ integral_constant<bool, __always_equal>());
+ return *this;
+ }
+
+ /**
+ * @brief Assigns an initializer list to a %deque.
+ * @param __l An initializer_list.
+ *
+ * This function fills a %deque with copies of the elements in the
+ * initializer_list @a __l.
+ *
+ * Note that the assignment completely changes the %deque and that the
+ * resulting %deque's size is the same as the number of elements
+ * assigned. Old data may be lost.
+ */
+ deque&
+ operator=(initializer_list<value_type> __l)
+ {
+ this->assign(__l.begin(), __l.end());
+ return *this;
+ }
+#endif
+
/**
* @brief Assigns a given value to a %deque.
- * @param n Number of elements to be assigned.
- * @param val Value to be assigned.
+ * @param __n Number of elements to be assigned.
+ * @param __val Value to be assigned.
*
* This function fills a %deque with @a n copies of the given
* value. Note that the assignment completely changes the
/**
* @brief Assigns a range to a %deque.
- * @param first An input iterator.
- * @param last An input iterator.
+ * @param __first An input iterator.
+ * @param __last An input iterator.
*
* This function fills a %deque with copies of the elements in the
- * range [first,last).
+ * range [__first,__last).
*
* Note that the assignment completely changes the %deque and that the
* resulting %deque's size is the same as the number of elements
* assigned. Old data may be lost.
*/
+#if __cplusplus >= 201103L
+ template<typename _InputIterator,
+ typename = std::_RequireInputIter<_InputIterator>>
+ void
+ assign(_InputIterator __first, _InputIterator __last)
+ { _M_assign_dispatch(__first, __last, __false_type()); }
+#else
template<typename _InputIterator>
void
assign(_InputIterator __first, _InputIterator __last)
typedef typename std::__is_integer<_InputIterator>::__type _Integral;
_M_assign_dispatch(__first, __last, _Integral());
}
+#endif
+
+#if __cplusplus >= 201103L
+ /**
+ * @brief Assigns an initializer list to a %deque.
+ * @param __l An initializer_list.
+ *
+ * This function fills a %deque with copies of the elements in the
+ * initializer_list @a __l.
+ *
+ * Note that the assignment completely changes the %deque and that the
+ * resulting %deque's size is the same as the number of elements
+ * assigned. Old data may be lost.
+ */
+ void
+ assign(initializer_list<value_type> __l)
+ { this->assign(__l.begin(), __l.end()); }
+#endif
/// Get a copy of the memory allocation object.
allocator_type
- get_allocator() const
+ get_allocator() const _GLIBCXX_NOEXCEPT
{ return _Base::get_allocator(); }
// iterators
* %deque. Iteration is done in ordinary element order.
*/
iterator
- begin()
+ begin() _GLIBCXX_NOEXCEPT
{ return this->_M_impl._M_start; }
/**
* element in the %deque. Iteration is done in ordinary element order.
*/
const_iterator
- begin() const
+ begin() const _GLIBCXX_NOEXCEPT
{ return this->_M_impl._M_start; }
/**
* element order.
*/
iterator
- end()
+ end() _GLIBCXX_NOEXCEPT
{ return this->_M_impl._M_finish; }
/**
* ordinary element order.
*/
const_iterator
- end() const
+ end() const _GLIBCXX_NOEXCEPT
{ return this->_M_impl._M_finish; }
/**
* element order.
*/
reverse_iterator
- rbegin()
+ rbegin() _GLIBCXX_NOEXCEPT
{ return reverse_iterator(this->_M_impl._M_finish); }
/**
* reverse element order.
*/
const_reverse_iterator
- rbegin() const
+ rbegin() const _GLIBCXX_NOEXCEPT
{ return const_reverse_iterator(this->_M_impl._M_finish); }
/**
* in reverse element order.
*/
reverse_iterator
- rend()
+ rend() _GLIBCXX_NOEXCEPT
{ return reverse_iterator(this->_M_impl._M_start); }
/**
* done in reverse element order.
*/
const_reverse_iterator
- rend() const
+ rend() const _GLIBCXX_NOEXCEPT
+ { return const_reverse_iterator(this->_M_impl._M_start); }
+
+#if __cplusplus >= 201103L
+ /**
+ * Returns a read-only (constant) iterator that points to the first
+ * element in the %deque. Iteration is done in ordinary element order.
+ */
+ const_iterator
+ cbegin() const noexcept
+ { return this->_M_impl._M_start; }
+
+ /**
+ * Returns a read-only (constant) iterator that points one past
+ * the last element in the %deque. Iteration is done in
+ * ordinary element order.
+ */
+ const_iterator
+ cend() const noexcept
+ { return this->_M_impl._M_finish; }
+
+ /**
+ * Returns a read-only (constant) reverse iterator that points
+ * to the last element in the %deque. Iteration is done in
+ * reverse element order.
+ */
+ const_reverse_iterator
+ crbegin() const noexcept
+ { return const_reverse_iterator(this->_M_impl._M_finish); }
+
+ /**
+ * Returns a read-only (constant) reverse iterator that points
+ * to one before the first element in the %deque. Iteration is
+ * done in reverse element order.
+ */
+ const_reverse_iterator
+ crend() const noexcept
{ return const_reverse_iterator(this->_M_impl._M_start); }
+#endif
// [23.2.1.2] capacity
/** Returns the number of elements in the %deque. */
size_type
- size() const
+ size() const _GLIBCXX_NOEXCEPT
{ return this->_M_impl._M_finish - this->_M_impl._M_start; }
/** Returns the size() of the largest possible %deque. */
size_type
- max_size() const
- { return size_type(-1); }
+ max_size() const _GLIBCXX_NOEXCEPT
+ { return _Alloc_traits::max_size(_M_get_Tp_allocator()); }
+
+#if __cplusplus >= 201103L
+ /**
+ * @brief Resizes the %deque to the specified number of elements.
+ * @param __new_size Number of elements the %deque should contain.
+ *
+ * This function will %resize the %deque to the specified
+ * number of elements. If the number is smaller than the
+ * %deque's current size the %deque is truncated, otherwise
+ * default constructed elements are appended.
+ */
+ void
+ resize(size_type __new_size)
+ {
+ const size_type __len = size();
+ if (__new_size > __len)
+ _M_default_append(__new_size - __len);
+ else if (__new_size < __len)
+ _M_erase_at_end(this->_M_impl._M_start
+ + difference_type(__new_size));
+ }
/**
* @brief Resizes the %deque to the specified number of elements.
- * @param new_size Number of elements the %deque should contain.
- * @param x Data with which new elements should be populated.
+ * @param __new_size Number of elements the %deque should contain.
+ * @param __x Data with which new elements should be populated.
+ *
+ * This function will %resize the %deque to the specified
+ * number of elements. If the number is smaller than the
+ * %deque's current size the %deque is truncated, otherwise the
+ * %deque is extended and new elements are populated with given
+ * data.
+ */
+ void
+ resize(size_type __new_size, const value_type& __x)
+ {
+ const size_type __len = size();
+ if (__new_size > __len)
+ insert(this->_M_impl._M_finish, __new_size - __len, __x);
+ else if (__new_size < __len)
+ _M_erase_at_end(this->_M_impl._M_start
+ + difference_type(__new_size));
+ }
+#else
+ /**
+ * @brief Resizes the %deque to the specified number of elements.
+ * @param __new_size Number of elements the %deque should contain.
+ * @param __x Data with which new elements should be populated.
*
* This function will %resize the %deque to the specified
* number of elements. If the number is smaller than the
resize(size_type __new_size, value_type __x = value_type())
{
const size_type __len = size();
- if (__new_size < __len)
- _M_erase_at_end(this->_M_impl._M_start + difference_type(__new_size));
- else
+ if (__new_size > __len)
insert(this->_M_impl._M_finish, __new_size - __len, __x);
+ else if (__new_size < __len)
+ _M_erase_at_end(this->_M_impl._M_start
+ + difference_type(__new_size));
}
+#endif
+
+#if __cplusplus >= 201103L
+ /** A non-binding request to reduce memory use. */
+ void
+ shrink_to_fit() noexcept
+ { _M_shrink_to_fit(); }
+#endif
/**
* Returns true if the %deque is empty. (Thus begin() would
* equal end().)
*/
bool
- empty() const
+ empty() const _GLIBCXX_NOEXCEPT
{ return this->_M_impl._M_finish == this->_M_impl._M_start; }
// element access
/**
* @brief Subscript access to the data contained in the %deque.
- * @param n The index of the element for which data should be
+ * @param __n The index of the element for which data should be
* accessed.
* @return Read/write reference to data.
*
* see at().)
*/
reference
- operator[](size_type __n)
+ operator[](size_type __n) _GLIBCXX_NOEXCEPT
{ return this->_M_impl._M_start[difference_type(__n)]; }
/**
* @brief Subscript access to the data contained in the %deque.
- * @param n The index of the element for which data should be
+ * @param __n The index of the element for which data should be
* accessed.
* @return Read-only (constant) reference to data.
*
* see at().)
*/
const_reference
- operator[](size_type __n) const
+ operator[](size_type __n) const _GLIBCXX_NOEXCEPT
{ return this->_M_impl._M_start[difference_type(__n)]; }
protected:
- /// @if maint Safety check used only from at(). @endif
+ /// Safety check used only from at().
void
_M_range_check(size_type __n) const
{
if (__n >= this->size())
- __throw_out_of_range(__N("deque::_M_range_check"));
+ __throw_out_of_range_fmt(__N("deque::_M_range_check: __n "
+ "(which is %zu)>= this->size() "
+ "(which is %zu)"),
+ __n, this->size());
}
public:
/**
* @brief Provides access to the data contained in the %deque.
- * @param n The index of the element for which data should be
+ * @param __n The index of the element for which data should be
* accessed.
* @return Read/write reference to data.
- * @throw std::out_of_range If @a n is an invalid index.
+ * @throw std::out_of_range If @a __n is an invalid index.
*
* This function provides for safer data access. The parameter
* is first checked that it is in the range of the deque. The
/**
* @brief Provides access to the data contained in the %deque.
- * @param n The index of the element for which data should be
+ * @param __n The index of the element for which data should be
* accessed.
* @return Read-only (constant) reference to data.
- * @throw std::out_of_range If @a n is an invalid index.
+ * @throw std::out_of_range If @a __n is an invalid index.
*
* This function provides for safer data access. The parameter is first
* checked that it is in the range of the deque. The function throws
* element of the %deque.
*/
reference
- front()
+ front() _GLIBCXX_NOEXCEPT
{ return *begin(); }
/**
* element of the %deque.
*/
const_reference
- front() const
+ front() const _GLIBCXX_NOEXCEPT
{ return *begin(); }
/**
* %deque.
*/
reference
- back()
+ back() _GLIBCXX_NOEXCEPT
{
iterator __tmp = end();
--__tmp;
* element of the %deque.
*/
const_reference
- back() const
+ back() const _GLIBCXX_NOEXCEPT
{
const_iterator __tmp = end();
--__tmp;
// [23.2.1.2] modifiers
/**
* @brief Add data to the front of the %deque.
- * @param x Data to be added.
+ * @param __x Data to be added.
*
* This is a typical stack operation. The function creates an
* element at the front of the %deque and assigns the given
{
if (this->_M_impl._M_start._M_cur != this->_M_impl._M_start._M_first)
{
- this->_M_impl.construct(this->_M_impl._M_start._M_cur - 1, __x);
+ _Alloc_traits::construct(this->_M_impl,
+ this->_M_impl._M_start._M_cur - 1,
+ __x);
--this->_M_impl._M_start._M_cur;
}
else
_M_push_front_aux(__x);
}
+#if __cplusplus >= 201103L
+ void
+ push_front(value_type&& __x)
+ { emplace_front(std::move(__x)); }
+
+ template<typename... _Args>
+ void
+ emplace_front(_Args&&... __args);
+#endif
+
/**
* @brief Add data to the end of the %deque.
- * @param x Data to be added.
+ * @param __x Data to be added.
*
* This is a typical stack operation. The function creates an
* element at the end of the %deque and assigns the given data
if (this->_M_impl._M_finish._M_cur
!= this->_M_impl._M_finish._M_last - 1)
{
- this->_M_impl.construct(this->_M_impl._M_finish._M_cur, __x);
+ _Alloc_traits::construct(this->_M_impl,
+ this->_M_impl._M_finish._M_cur, __x);
++this->_M_impl._M_finish._M_cur;
}
else
_M_push_back_aux(__x);
}
+#if __cplusplus >= 201103L
+ void
+ push_back(value_type&& __x)
+ { emplace_back(std::move(__x)); }
+
+ template<typename... _Args>
+ void
+ emplace_back(_Args&&... __args);
+#endif
+
/**
* @brief Removes first element.
*
* needed, it should be retrieved before pop_front() is called.
*/
void
- pop_front()
+ pop_front() _GLIBCXX_NOEXCEPT
{
if (this->_M_impl._M_start._M_cur
!= this->_M_impl._M_start._M_last - 1)
{
- this->_M_impl.destroy(this->_M_impl._M_start._M_cur);
+ _Alloc_traits::destroy(this->_M_impl,
+ this->_M_impl._M_start._M_cur);
++this->_M_impl._M_start._M_cur;
}
else
* needed, it should be retrieved before pop_back() is called.
*/
void
- pop_back()
+ pop_back() _GLIBCXX_NOEXCEPT
{
if (this->_M_impl._M_finish._M_cur
!= this->_M_impl._M_finish._M_first)
{
--this->_M_impl._M_finish._M_cur;
- this->_M_impl.destroy(this->_M_impl._M_finish._M_cur);
+ _Alloc_traits::destroy(this->_M_impl,
+ this->_M_impl._M_finish._M_cur);
}
else
_M_pop_back_aux();
}
+#if __cplusplus >= 201103L
+ /**
+ * @brief Inserts an object in %deque before specified iterator.
+ * @param __position A const_iterator into the %deque.
+ * @param __args Arguments.
+ * @return An iterator that points to the inserted data.
+ *
+ * This function will insert an object of type T constructed
+ * with T(std::forward<Args>(args)...) before the specified location.
+ */
+ template<typename... _Args>
+ iterator
+ emplace(const_iterator __position, _Args&&... __args);
+
/**
* @brief Inserts given value into %deque before specified iterator.
- * @param position An iterator into the %deque.
- * @param x Data to be inserted.
+ * @param __position A const_iterator into the %deque.
+ * @param __x Data to be inserted.
+ * @return An iterator that points to the inserted data.
+ *
+ * This function will insert a copy of the given value before the
+ * specified location.
+ */
+ iterator
+ insert(const_iterator __position, const value_type& __x);
+#else
+ /**
+ * @brief Inserts given value into %deque before specified iterator.
+ * @param __position An iterator into the %deque.
+ * @param __x Data to be inserted.
* @return An iterator that points to the inserted data.
*
* This function will insert a copy of the given value before the
*/
iterator
insert(iterator __position, const value_type& __x);
+#endif
+
+#if __cplusplus >= 201103L
+ /**
+ * @brief Inserts given rvalue into %deque before specified iterator.
+ * @param __position A const_iterator into the %deque.
+ * @param __x Data to be inserted.
+ * @return An iterator that points to the inserted data.
+ *
+ * This function will insert a copy of the given rvalue before the
+ * specified location.
+ */
+ iterator
+ insert(const_iterator __position, value_type&& __x)
+ { return emplace(__position, std::move(__x)); }
+
+ /**
+ * @brief Inserts an initializer list into the %deque.
+ * @param __p An iterator into the %deque.
+ * @param __l An initializer_list.
+ *
+ * This function will insert copies of the data in the
+ * initializer_list @a __l into the %deque before the location
+ * specified by @a __p. This is known as <em>list insert</em>.
+ */
+ iterator
+ insert(const_iterator __p, initializer_list<value_type> __l)
+ { return this->insert(__p, __l.begin(), __l.end()); }
+#endif
+#if __cplusplus >= 201103L
+ /**
+ * @brief Inserts a number of copies of given data into the %deque.
+ * @param __position A const_iterator into the %deque.
+ * @param __n Number of elements to be inserted.
+ * @param __x Data to be inserted.
+ * @return An iterator that points to the inserted data.
+ *
+ * This function will insert a specified number of copies of the given
+ * data before the location specified by @a __position.
+ */
+ iterator
+ insert(const_iterator __position, size_type __n, const value_type& __x)
+ {
+ difference_type __offset = __position - cbegin();
+ _M_fill_insert(__position._M_const_cast(), __n, __x);
+ return begin() + __offset;
+ }
+#else
/**
* @brief Inserts a number of copies of given data into the %deque.
- * @param position An iterator into the %deque.
- * @param n Number of elements to be inserted.
- * @param x Data to be inserted.
+ * @param __position An iterator into the %deque.
+ * @param __n Number of elements to be inserted.
+ * @param __x Data to be inserted.
*
* This function will insert a specified number of copies of the given
- * data before the location specified by @a position.
+ * data before the location specified by @a __position.
*/
void
insert(iterator __position, size_type __n, const value_type& __x)
{ _M_fill_insert(__position, __n, __x); }
+#endif
+#if __cplusplus >= 201103L
+ /**
+ * @brief Inserts a range into the %deque.
+ * @param __position A const_iterator into the %deque.
+ * @param __first An input iterator.
+ * @param __last An input iterator.
+ * @return An iterator that points to the inserted data.
+ *
+ * This function will insert copies of the data in the range
+ * [__first,__last) into the %deque before the location specified
+ * by @a __position. This is known as <em>range insert</em>.
+ */
+ template<typename _InputIterator,
+ typename = std::_RequireInputIter<_InputIterator>>
+ iterator
+ insert(const_iterator __position, _InputIterator __first,
+ _InputIterator __last)
+ {
+ difference_type __offset = __position - cbegin();
+ _M_insert_dispatch(__position._M_const_cast(),
+ __first, __last, __false_type());
+ return begin() + __offset;
+ }
+#else
/**
* @brief Inserts a range into the %deque.
- * @param position An iterator into the %deque.
- * @param first An input iterator.
- * @param last An input iterator.
+ * @param __position An iterator into the %deque.
+ * @param __first An input iterator.
+ * @param __last An input iterator.
*
* This function will insert copies of the data in the range
- * [first,last) into the %deque before the location specified
- * by @a pos. This is known as "range insert."
+ * [__first,__last) into the %deque before the location specified
+ * by @a __position. This is known as <em>range insert</em>.
*/
template<typename _InputIterator>
void
typedef typename std::__is_integer<_InputIterator>::__type _Integral;
_M_insert_dispatch(__position, __first, __last, _Integral());
}
+#endif
/**
* @brief Remove element at given position.
- * @param position Iterator pointing to element to be erased.
+ * @param __position Iterator pointing to element to be erased.
* @return An iterator pointing to the next element (or end()).
*
* This function will erase the element at the given position and thus
* The user is cautioned that
* this function only erases the element, and that if the element is
* itself a pointer, the pointed-to memory is not touched in any way.
- * Managing the pointer is the user's responsibilty.
+ * Managing the pointer is the user's responsibility.
*/
iterator
- erase(iterator __position);
+#if __cplusplus >= 201103L
+ erase(const_iterator __position)
+#else
+ erase(iterator __position)
+#endif
+ { return _M_erase(__position._M_const_cast()); }
/**
* @brief Remove a range of elements.
- * @param first Iterator pointing to the first element to be erased.
- * @param last Iterator pointing to one past the last element to be
+ * @param __first Iterator pointing to the first element to be erased.
+ * @param __last Iterator pointing to one past the last element to be
* erased.
* @return An iterator pointing to the element pointed to by @a last
* prior to erasing (or end()).
*
- * This function will erase the elements in the range [first,last) and
- * shorten the %deque accordingly.
+ * This function will erase the elements in the range
+ * [__first,__last) and shorten the %deque accordingly.
*
* The user is cautioned that
* this function only erases the elements, and that if the elements
* themselves are pointers, the pointed-to memory is not touched in any
- * way. Managing the pointer is the user's responsibilty.
+ * way. Managing the pointer is the user's responsibility.
*/
iterator
- erase(iterator __first, iterator __last);
+#if __cplusplus >= 201103L
+ erase(const_iterator __first, const_iterator __last)
+#else
+ erase(iterator __first, iterator __last)
+#endif
+ { return _M_erase(__first._M_const_cast(), __last._M_const_cast()); }
/**
* @brief Swaps data with another %deque.
- * @param x A %deque of the same element and allocator types.
+ * @param __x A %deque of the same element and allocator types.
*
* This exchanges the elements between two deques in constant time.
* (Four pointers, so it should be quite fast.)
*/
void
swap(deque& __x)
+#if __cplusplus >= 201103L
+ noexcept(_Alloc_traits::_S_nothrow_swap())
+#endif
{
- std::swap(this->_M_impl._M_start, __x._M_impl._M_start);
- std::swap(this->_M_impl._M_finish, __x._M_impl._M_finish);
- std::swap(this->_M_impl._M_map, __x._M_impl._M_map);
- std::swap(this->_M_impl._M_map_size, __x._M_impl._M_map_size);
+ _M_impl._M_swap_data(__x._M_impl);
+ _Alloc_traits::_S_on_swap(_M_get_Tp_allocator(),
+ __x._M_get_Tp_allocator());
}
/**
* Erases all the elements. Note that this function only erases the
* elements, and that if the elements themselves are pointers, the
* pointed-to memory is not touched in any way. Managing the pointer is
- * the user's responsibilty.
+ * the user's responsibility.
*/
void
- clear()
+ clear() _GLIBCXX_NOEXCEPT
{ _M_erase_at_end(begin()); }
protected:
// Internal constructor functions follow.
// called by the range constructor to implement [23.1.1]/9
+
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 438. Ambiguity in the "do the right thing" clause
template<typename _Integer>
void
_M_initialize_dispatch(_Integer __n, _Integer __x, __true_type)
{
- _M_initialize_map(__n);
+ _M_initialize_map(static_cast<size_type>(__n));
_M_fill_initialize(__x);
}
// called by the second initialize_dispatch above
//@{
/**
- * @if maint
* @brief Fills the deque with whatever is in [first,last).
- * @param first An input iterator.
- * @param last An input iterator.
+ * @param __first An input iterator.
+ * @param __last An input iterator.
* @return Nothing.
*
* If the iterators are actually forward iterators (or better), then the
* memory layout can be done all at once. Else we move forward using
* push_back on each value from the iterator.
- * @endif
*/
template<typename _InputIterator>
void
//@}
/**
- * @if maint
* @brief Fills the %deque with copies of value.
- * @param value Initial value.
+ * @param __value Initial value.
* @return Nothing.
* @pre _M_start and _M_finish have already been initialized,
* but none of the %deque's elements have yet been constructed.
*
* This function is called only when the user provides an explicit size
* (with or without an explicit exemplar value).
- * @endif
*/
void
_M_fill_initialize(const value_type& __value);
+#if __cplusplus >= 201103L
+ // called by deque(n).
+ void
+ _M_default_initialize();
+#endif
+
// Internal assign functions follow. The *_aux functions do the actual
// assignment work for the range versions.
// called by the range assign to implement [23.1.1]/9
+
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 438. Ambiguity in the "do the right thing" clause
template<typename _Integer>
void
_M_assign_dispatch(_Integer __n, _Integer __val, __true_type)
- {
- _M_fill_assign(static_cast<size_type>(__n),
- static_cast<value_type>(__val));
- }
+ { _M_fill_assign(__n, __val); }
// called by the range assign to implement [23.1.1]/9
template<typename _InputIterator>
}
//@{
- /**
- * @if maint
- * @brief Helper functions for push_* and pop_*.
- * @endif
- */
+ /// Helper functions for push_* and pop_*.
+#if __cplusplus < 201103L
void _M_push_back_aux(const value_type&);
void _M_push_front_aux(const value_type&);
+#else
+ template<typename... _Args>
+ void _M_push_back_aux(_Args&&... __args);
+
+ template<typename... _Args>
+ void _M_push_front_aux(_Args&&... __args);
+#endif
void _M_pop_back_aux();
// insertion work when all shortcuts fail.
// called by the range insert to implement [23.1.1]/9
+
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 438. Ambiguity in the "do the right thing" clause
template<typename _Integer>
void
_M_insert_dispatch(iterator __pos,
_Integer __n, _Integer __x, __true_type)
- {
- _M_fill_insert(__pos, static_cast<size_type>(__n),
- static_cast<value_type>(__x));
- }
+ { _M_fill_insert(__pos, __n, __x); }
// called by the range insert to implement [23.1.1]/9
template<typename _InputIterator>
_M_fill_insert(iterator __pos, size_type __n, const value_type& __x);
// called by insert(p,x)
+#if __cplusplus < 201103L
iterator
_M_insert_aux(iterator __pos, const value_type& __x);
+#else
+ template<typename... _Args>
+ iterator
+ _M_insert_aux(iterator __pos, _Args&&... __args);
+#endif
// called by insert(p,n,x) via fill_insert
void
void
_M_destroy_data_aux(iterator __first, iterator __last);
- void
- _M_destroy_data_dispatch(iterator, iterator, __true_type) { }
-
- void
- _M_destroy_data_dispatch(iterator __first, iterator __last, __false_type)
- { _M_destroy_data_aux(__first, __last); }
-
// Called by ~deque().
// NB: Doesn't deallocate the nodes.
template<typename _Alloc1>
_M_destroy_data(iterator __first, iterator __last,
const std::allocator<_Tp>&)
{
- typedef typename std::__is_scalar<value_type>::__type
- _Has_trivial_destructor;
- _M_destroy_data_dispatch(__first, __last, _Has_trivial_destructor());
+ if (!__has_trivial_destructor(value_type))
+ _M_destroy_data_aux(__first, __last);
}
// Called by erase(q1, q2).
this->_M_impl._M_finish = __pos;
}
+ iterator
+ _M_erase(iterator __pos);
+
+ iterator
+ _M_erase(iterator __first, iterator __last);
+
+#if __cplusplus >= 201103L
+ // Called by resize(sz).
+ void
+ _M_default_append(size_type __n);
+
+ bool
+ _M_shrink_to_fit();
+#endif
+
//@{
- /**
- * @if maint
- * @brief Memory-handling helpers for the previous internal insert
- * functions.
- * @endif
- */
+ /// Memory-handling helpers for the previous internal insert functions.
iterator
_M_reserve_elements_at_front(size_type __n)
{
//@{
/**
- * @if maint
* @brief Memory-handling helpers for the major %map.
*
* Makes sure the _M_map has space for new nodes. Does not
* actually add the nodes. Can invalidate _M_map pointers.
* (And consequently, %deque iterators.)
- * @endif
*/
void
_M_reserve_map_at_back(size_type __nodes_to_add = 1)
}
void
- _M_reserve_map_at_front (size_type __nodes_to_add = 1)
+ _M_reserve_map_at_front(size_type __nodes_to_add = 1)
{
if (__nodes_to_add > size_type(this->_M_impl._M_start._M_node
- this->_M_impl._M_map))
void
_M_reallocate_map(size_type __nodes_to_add, bool __add_at_front);
//@}
+
+#if __cplusplus >= 201103L
+ // Constant-time, nothrow move assignment when source object's memory
+ // can be moved because the allocators are equal.
+ void
+ _M_move_assign1(deque&& __x, /* always equal: */ true_type) noexcept
+ {
+ this->_M_impl._M_swap_data(__x._M_impl);
+ __x.clear();
+ std::__alloc_on_move(_M_get_Tp_allocator(), __x._M_get_Tp_allocator());
+ }
+
+ void
+ _M_move_assign1(deque&& __x, /* always equal: */ false_type)
+ {
+ constexpr bool __move_storage =
+ _Alloc_traits::_S_propagate_on_move_assign();
+ _M_move_assign2(std::move(__x),
+ integral_constant<bool, __move_storage>());
+ }
+
+ // Destroy all elements and deallocate all memory, then replace
+ // with elements created from __args.
+ template<typename... _Args>
+ void
+ _M_replace_map(_Args&&... __args)
+ {
+ // Create new data first, so if allocation fails there are no effects.
+ deque __newobj(std::forward<_Args>(__args)...);
+ // Free existing storage using existing allocator.
+ clear();
+ _M_deallocate_node(*begin()._M_node); // one node left after clear()
+ _M_deallocate_map(this->_M_impl._M_map, this->_M_impl._M_map_size);
+ this->_M_impl._M_map = nullptr;
+ this->_M_impl._M_map_size = 0;
+ // Take ownership of replacement memory.
+ this->_M_impl._M_swap_data(__newobj._M_impl);
+ }
+
+ // Do move assignment when the allocator propagates.
+ void
+ _M_move_assign2(deque&& __x, /* propagate: */ true_type)
+ {
+ // Make a copy of the original allocator state.
+ auto __alloc = __x._M_get_Tp_allocator();
+ // The allocator propagates so storage can be moved from __x,
+ // leaving __x in a valid empty state with a moved-from allocator.
+ _M_replace_map(std::move(__x));
+ // Move the corresponding allocator state too.
+ _M_get_Tp_allocator() = std::move(__alloc);
+ }
+
+ // Do move assignment when it may not be possible to move source
+ // object's memory, resulting in a linear-time operation.
+ void
+ _M_move_assign2(deque&& __x, /* propagate: */ false_type)
+ {
+ if (__x._M_get_Tp_allocator() == this->_M_get_Tp_allocator())
+ {
+ // The allocators are equal so storage can be moved from __x,
+ // leaving __x in a valid empty state with its current allocator.
+ _M_replace_map(std::move(__x), __x.get_allocator());
+ }
+ else
+ {
+ // The rvalue's allocator cannot be moved and is not equal,
+ // so we need to individually move each element.
+ this->assign(std::__make_move_if_noexcept_iterator(__x.begin()),
+ std::__make_move_if_noexcept_iterator(__x.end()));
+ __x.clear();
+ }
+ }
+#endif
};
/**
* @brief Deque equality comparison.
- * @param x A %deque.
- * @param y A %deque of the same type as @a x.
+ * @param __x A %deque.
+ * @param __y A %deque of the same type as @a __x.
* @return True iff the size and elements of the deques are equal.
*
* This is an equivalence relation. It is linear in the size of the
/**
* @brief Deque ordering relation.
- * @param x A %deque.
- * @param y A %deque of the same type as @a x.
- * @return True iff @a x is lexicographically less than @a y.
+ * @param __x A %deque.
+ * @param __y A %deque of the same type as @a __x.
+ * @return True iff @a x is lexicographically less than @a __y.
*
* This is a total ordering relation. It is linear in the size of the
* deques. The elements must be comparable with @c <.
inline bool
operator<(const deque<_Tp, _Alloc>& __x,
const deque<_Tp, _Alloc>& __y)
- { return lexicographical_compare(__x.begin(), __x.end(),
- __y.begin(), __y.end()); }
+ { return std::lexicographical_compare(__x.begin(), __x.end(),
+ __y.begin(), __y.end()); }
/// Based on operator==
template<typename _Tp, typename _Alloc>
swap(deque<_Tp,_Alloc>& __x, deque<_Tp,_Alloc>& __y)
{ __x.swap(__y); }
-_GLIBCXX_END_NESTED_NAMESPACE
+#undef _GLIBCXX_DEQUE_BUF_SIZE
+
+_GLIBCXX_END_NAMESPACE_CONTAINER
+} // namespace std
-#endif /* _DEQUE_H */
+#endif /* _STL_DEQUE_H */
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