diff options
Diffstat (limited to 'uclibc-crosstools-gcc-4.4.2-1/usr/mips-linux-uclibc/include/c++/4.4.2/bits/stl_deque.h')
| -rw-r--r-- | uclibc-crosstools-gcc-4.4.2-1/usr/mips-linux-uclibc/include/c++/4.4.2/bits/stl_deque.h | 1819 |
1 files changed, 1819 insertions, 0 deletions
diff --git a/uclibc-crosstools-gcc-4.4.2-1/usr/mips-linux-uclibc/include/c++/4.4.2/bits/stl_deque.h b/uclibc-crosstools-gcc-4.4.2-1/usr/mips-linux-uclibc/include/c++/4.4.2/bits/stl_deque.h new file mode 100644 index 0000000..1c20e27 --- /dev/null +++ b/uclibc-crosstools-gcc-4.4.2-1/usr/mips-linux-uclibc/include/c++/4.4.2/bits/stl_deque.h @@ -0,0 +1,1819 @@ +// Deque implementation -*- 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) 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_deque.h + * This is an internal header file, included by other library headers. + * You should not attempt to use it directly. + */ + +#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> +#include <initializer_list> + +_GLIBCXX_BEGIN_NESTED_NAMESPACE(std, _GLIBCXX_STD_D) + + /** + * @brief This function controls the size of memory nodes. + * @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 + * tunable (and no other code needs to change), but no investigation has + * been done since inheriting the SGI code. + */ + inline size_t + __deque_buf_size(size_t __size) + { return __size < 512 ? size_t(512 / __size) : size_t(1); } + + + /** + * @brief A deque::iterator. + * + * Quite a bit of intelligence here. Much of the functionality of + * deque is actually passed off to this class. A deque holds two + * of these internally, marking its valid range. Access to + * elements is done as offsets of either of those two, relying on + * operator overloading in this class. + * + * All the functions are op overloads except for _M_set_node. + */ + template<typename _Tp, typename _Ref, typename _Ptr> + struct _Deque_iterator + { + typedef _Deque_iterator<_Tp, _Tp&, _Tp*> iterator; + typedef _Deque_iterator<_Tp, const _Tp&, const _Tp*> const_iterator; + + static size_t _S_buffer_size() + { return __deque_buf_size(sizeof(_Tp)); } + + typedef std::random_access_iterator_tag iterator_category; + typedef _Tp value_type; + typedef _Ptr pointer; + 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; + _Map_pointer _M_node; + + _Deque_iterator(_Tp* __x, _Map_pointer __y) + : _M_cur(__x), _M_first(*__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(const iterator& __x) + : _M_cur(__x._M_cur), _M_first(__x._M_first), + _M_last(__x._M_last), _M_node(__x._M_node) { } + + reference + operator*() const + { return *_M_cur; } + + pointer + operator->() const + { return _M_cur; } + + _Self& + operator++() + { + ++_M_cur; + if (_M_cur == _M_last) + { + _M_set_node(_M_node + 1); + _M_cur = _M_first; + } + return *this; + } + + _Self + operator++(int) + { + _Self __tmp = *this; + ++*this; + return __tmp; + } + + _Self& + operator--() + { + if (_M_cur == _M_first) + { + _M_set_node(_M_node - 1); + _M_cur = _M_last; + } + --_M_cur; + return *this; + } + + _Self + operator--(int) + { + _Self __tmp = *this; + --*this; + return __tmp; + } + + _Self& + operator+=(difference_type __n) + { + const difference_type __offset = __n + (_M_cur - _M_first); + if (__offset >= 0 && __offset < difference_type(_S_buffer_size())) + _M_cur += __n; + else + { + const difference_type __node_offset = + __offset > 0 ? __offset / difference_type(_S_buffer_size()) + : -difference_type((-__offset - 1) + / _S_buffer_size()) - 1; + _M_set_node(_M_node + __node_offset); + _M_cur = _M_first + (__offset - __node_offset + * difference_type(_S_buffer_size())); + } + return *this; + } + + _Self + operator+(difference_type __n) const + { + _Self __tmp = *this; + return __tmp += __n; + } + + _Self& + operator-=(difference_type __n) + { return *this += -__n; } + + _Self + operator-(difference_type __n) const + { + _Self __tmp = *this; + return __tmp -= __n; + } + + reference + operator[](difference_type __n) const + { return *(*this + __n); } + + /** + * 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. + */ + void + _M_set_node(_Map_pointer __new_node) + { + _M_node = __new_node; + _M_first = *__new_node; + _M_last = _M_first + difference_type(_S_buffer_size()); + } + }; + + // Note: we also provide overloads whose operands are of the same type in + // order to avoid ambiguous overload resolution when std::rel_ops operators + // are in scope (for additional details, see libstdc++/3628) + template<typename _Tp, typename _Ref, typename _Ptr> + inline bool + operator==(const _Deque_iterator<_Tp, _Ref, _Ptr>& __x, + const _Deque_iterator<_Tp, _Ref, _Ptr>& __y) + { 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) + { 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) + { 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) + { 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) + { return (__x._M_node == __y._M_node) ? (__x._M_cur < __y._M_cur) + : (__x._M_node < __y._M_node); } + + 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) + { 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) + { 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) + { 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) + { 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) + { 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) + { 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) + { return !(__x < __y); } + + // _GLIBCXX_RESOLVE_LIB_DEFECTS + // According to the resolution of DR179 not only the various comparison + // operators but also operator- must accept mixed iterator/const_iterator + // parameters. + 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) + { + return typename _Deque_iterator<_Tp, _Ref, _Ptr>::difference_type + (_Deque_iterator<_Tp, _Ref, _Ptr>::_S_buffer_size()) + * (__x._M_node - __y._M_node - 1) + (__x._M_cur - __x._M_first) + + (__y._M_last - __y._M_cur); + } + + template<typename _Tp, typename _RefL, typename _PtrL, + 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) + { + return typename _Deque_iterator<_Tp, _RefL, _PtrL>::difference_type + (_Deque_iterator<_Tp, _RefL, _PtrL>::_S_buffer_size()) + * (__x._M_node - __y._M_node - 1) + (__x._M_cur - __x._M_first) + + (__y._M_last - __y._M_cur); + } + + template<typename _Tp, typename _Ref, typename _Ptr> + inline _Deque_iterator<_Tp, _Ref, _Ptr> + operator+(ptrdiff_t __n, const _Deque_iterator<_Tp, _Ref, _Ptr>& __x) + { return __x + __n; } + + template<typename _Tp> + void + fill(const _Deque_iterator<_Tp, _Tp&, _Tp*>& __first, + const _Deque_iterator<_Tp, _Tp&, _Tp*>& __last, const _Tp& __value); + + /** + * 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 + * safety easier. + * + * Nothing in this class ever constructs or destroys an actual Tp element. + * (Deque handles that itself.) Only/All memory management is performed + * here. + */ + template<typename _Tp, typename _Alloc> + class _Deque_base + { + public: + typedef _Alloc allocator_type; + + allocator_type + get_allocator() const + { return allocator_type(_M_get_Tp_allocator()); } + + typedef _Deque_iterator<_Tp, _Tp&, _Tp*> iterator; + typedef _Deque_iterator<_Tp, const _Tp&, const _Tp*> const_iterator; + + _Deque_base() + : _M_impl() + { _M_initialize_map(0); } + + _Deque_base(const allocator_type& __a, size_t __num_elements) + : _M_impl(__a) + { _M_initialize_map(__num_elements); } + + _Deque_base(const allocator_type& __a) + : _M_impl(__a) + { } + +#ifdef __GXX_EXPERIMENTAL_CXX0X__ + _Deque_base(_Deque_base&& __x) + : _M_impl(__x._M_get_Tp_allocator()) + { + _M_initialize_map(0); + if (__x._M_impl._M_map) + { + 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); + } + } +#endif + + ~_Deque_base(); + + protected: + //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; + size_t _M_map_size; + iterator _M_start; + iterator _M_finish; + + _Deque_impl() + : _Tp_alloc_type(), _M_map(0), _M_map_size(0), + _M_start(), _M_finish() + { } + + _Deque_impl(const _Tp_alloc_type& __a) + : _Tp_alloc_type(__a), _M_map(0), _M_map_size(0), + _M_start(), _M_finish() + { } + }; + + _Tp_alloc_type& + _M_get_Tp_allocator() + { return *static_cast<_Tp_alloc_type*>(&this->_M_impl); } + + const _Tp_alloc_type& + _M_get_Tp_allocator() const + { return *static_cast<const _Tp_alloc_type*>(&this->_M_impl); } + + _Map_alloc_type + _M_get_map_allocator() const + { return _Map_alloc_type(_M_get_Tp_allocator()); } + + _Tp* + _M_allocate_node() + { + return _M_impl._Tp_alloc_type::allocate(__deque_buf_size(sizeof(_Tp))); + } + + void + _M_deallocate_node(_Tp* __p) + { + _M_impl._Tp_alloc_type::deallocate(__p, __deque_buf_size(sizeof(_Tp))); + } + + _Tp** + _M_allocate_map(size_t __n) + { return _M_get_map_allocator().allocate(__n); } + + void + _M_deallocate_map(_Tp** __p, size_t __n) + { _M_get_map_allocator().deallocate(__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); + enum { _S_initial_map_size = 8 }; + + _Deque_impl _M_impl; + }; + + template<typename _Tp, typename _Alloc> + _Deque_base<_Tp, _Alloc>:: + ~_Deque_base() + { + if (this->_M_impl._M_map) + { + _M_destroy_nodes(this->_M_impl._M_start._M_node, + this->_M_impl._M_finish._M_node + 1); + _M_deallocate_map(this->_M_impl._M_map, this->_M_impl._M_map_size); + } + } + + /** + * @brief Layout storage. + * @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... + */ + template<typename _Tp, typename _Alloc> + void + _Deque_base<_Tp, _Alloc>:: + _M_initialize_map(size_t __num_elements) + { + const size_t __num_nodes = (__num_elements/ __deque_buf_size(sizeof(_Tp)) + + 1); + + this->_M_impl._M_map_size = std::max((size_t) _S_initial_map_size, + size_t(__num_nodes + 2)); + this->_M_impl._M_map = _M_allocate_map(this->_M_impl._M_map_size); + + // For "small" maps (needing less than _M_map_size nodes), allocation + // starts in the middle elements and grows outwards. So nstart may be + // 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; + + __try + { _M_create_nodes(__nstart, __nfinish); } + __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_size = 0; + __throw_exception_again; + } + + this->_M_impl._M_start._M_set_node(__nstart); + this->_M_impl._M_finish._M_set_node(__nfinish - 1); + this->_M_impl._M_start._M_cur = _M_impl._M_start._M_first; + this->_M_impl._M_finish._M_cur = (this->_M_impl._M_finish._M_first + + __num_elements + % __deque_buf_size(sizeof(_Tp))); + } + + template<typename _Tp, typename _Alloc> + void + _Deque_base<_Tp, _Alloc>:: + _M_create_nodes(_Tp** __nstart, _Tp** __nfinish) + { + _Tp** __cur; + __try + { + for (__cur = __nstart; __cur < __nfinish; ++__cur) + *__cur = this->_M_allocate_node(); + } + __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) + { + for (_Tp** __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 sequences + * + * Meets the requirements of a <a href="tables.html#65">container</a>, a + * <a href="tables.html#66">reversible container</a>, and a + * <a href="tables.html#67">sequence</a>, including the + * <a href="tables.html#68">optional sequence requirements</a>. + * + * In previous HP/SGI versions of deque, there was an extra template + * parameter so users could control the node size. This extension turned + * out to violate the C++ standard (it can be detected using template + * template parameters), and it was removed. + * + * Here's how a deque<Tp> manages memory. Each deque has 4 members: + * + * - Tp** _M_map + * - size_t _M_map_size + * - 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".) + * + * 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 + * 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 + * 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 + * allocator efficiency. + * + * Not every pointer in the %map array will point to a node. If + * the initial number of elements in the deque is small, the + * /middle/ %map pointers will be valid, and the ones at the edges + * 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". + * + * Class invariants: + * - For any nonsingular iterator i: + * - i.node points to a member of the %map array. (Yes, you read that + * correctly: i.node does not actually point to a node.) The member of + * the %map array is what actually points to the node. + * - i.first == *(i.node) (This points to the node (first Tp element).) + * - i.last == i.first + node_size + * - i.cur is a pointer in the range [i.first, i.last). NOTE: + * the implication of this is that i.cur is always a dereferenceable + * pointer, even if i is a past-the-end iterator. + * - Start and Finish are always nonsingular iterators. NOTE: this + * means that an empty deque must have one node, a deque with <N + * elements (where N is the node buffer size) must have one node, a + * deque with N through (2N-1) elements must have two nodes, etc. + * - For every node other than start.node and finish.node, every + * element in the node is an initialized object. If start.node == + * finish.node, then [start.cur, finish.cur) are initialized + * objects, and the elements outside that range are uninitialized + * storage. Otherwise, [start.cur, start.last) and [finish.first, + * finish.cur) are initialized objects, and [start.first, start.cur) + * and [finish.cur, finish.last) are uninitialized storage. + * - [%map, %map + map_size) is a valid, non-empty range. + * - [start.node, finish.node] is a valid range contained within + * [%map, %map + map_size). + * - A pointer in the range [%map, %map + map_size) points to an allocated + * 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 + * 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. + * 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. + */ + template<typename _Tp, typename _Alloc = std::allocator<_Tp> > + class deque : protected _Deque_base<_Tp, _Alloc> + { + // concept requirements + typedef typename _Alloc::value_type _Alloc_value_type; + __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; + + 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 _Base::iterator iterator; + typedef typename _Base::const_iterator const_iterator; + typedef std::reverse_iterator<const_iterator> const_reverse_iterator; + typedef std::reverse_iterator<iterator> reverse_iterator; + typedef size_t size_type; + typedef ptrdiff_t difference_type; + typedef _Alloc allocator_type; + + protected: + typedef pointer* _Map_pointer; + + static size_t _S_buffer_size() + { return __deque_buf_size(sizeof(_Tp)); } + + // Functions controlling memory layout, and nothing else. + using _Base::_M_initialize_map; + using _Base::_M_create_nodes; + using _Base::_M_destroy_nodes; + using _Base::_M_allocate_node; + using _Base::_M_deallocate_node; + using _Base::_M_allocate_map; + using _Base::_M_deallocate_map; + using _Base::_M_get_Tp_allocator; + + /** + * A total of four data members accumulated down the hierarchy. + * May be accessed via _M_impl.* + */ + 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. + */ + deque() + : _Base() { } + + /** + * @brief Creates a %deque with no elements. + * @param a An allocator object. + */ + explicit + deque(const allocator_type& __a) + : _Base(__a, 0) { } + + /** + * @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); } + + /** + * @brief %Deque copy constructor. + * @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. + */ + deque(const deque& __x) + : _Base(__x._M_get_Tp_allocator(), __x.size()) + { std::__uninitialized_copy_a(__x.begin(), __x.end(), + this->_M_impl._M_start, + _M_get_Tp_allocator()); } + +#ifdef __GXX_EXPERIMENTAL_CXX0X__ + /** + * @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::forward<_Base>(__x)) { } + + /** + * @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 a An allocator object. + * + * 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 + * input iterators are used, then this will do at most 2N calls to the + * copy constructor, and logN memory reallocations. + */ + template<typename _InputIterator> + deque(_InputIterator __first, _InputIterator __last, + const allocator_type& __a = allocator_type()) + : _Base(__a) + { + // Check whether it's an integral type. If so, it's not an iterator. + typedef typename std::__is_integer<_InputIterator>::__type _Integral; + _M_initialize_dispatch(__first, __last, _Integral()); + } + + /** + * 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 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. + * + * All the elements of @a x are copied, but unlike the copy constructor, + * the allocator object is not copied. + */ + deque& + operator=(const deque& __x); + +#ifdef __GXX_EXPERIMENTAL_CXX0X__ + /** + * @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). + * @a x is a valid, but unspecified %deque. + */ + deque& + operator=(deque&& __x) + { + // NB: DR 675. + this->clear(); + this->swap(__x); + 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. + * + * This function fills a %deque with @a n copies of the given + * value. 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(size_type __n, const value_type& __val) + { _M_fill_assign(__n, __val); } + + /** + * @brief Assigns a range to a %deque. + * @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). + * + * 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. + */ + template<typename _InputIterator> + void + assign(_InputIterator __first, _InputIterator __last) + { + typedef typename std::__is_integer<_InputIterator>::__type _Integral; + _M_assign_dispatch(__first, __last, _Integral()); + } + +#ifdef __GXX_EXPERIMENTAL_CXX0X__ + /** + * @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 + { return _Base::get_allocator(); } + + // iterators + /** + * Returns a read/write iterator that points to the first element in the + * %deque. Iteration is done in ordinary element order. + */ + iterator + begin() + { return this->_M_impl._M_start; } + + /** + * Returns a read-only (constant) iterator that points to the first + * element in the %deque. Iteration is done in ordinary element order. + */ + const_iterator + begin() const + { return this->_M_impl._M_start; } + + /** + * Returns a read/write iterator that points one past the last + * element in the %deque. Iteration is done in ordinary + * element order. + */ + iterator + end() + { return this->_M_impl._M_finish; } + + /** + * 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 + end() const + { return this->_M_impl._M_finish; } + + /** + * Returns a read/write reverse iterator that points to the + * last element in the %deque. Iteration is done in reverse + * element order. + */ + reverse_iterator + rbegin() + { return reverse_iterator(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 + rbegin() const + { return const_reverse_iterator(this->_M_impl._M_finish); } + + /** + * Returns a read/write reverse iterator that points to one + * before the first element in the %deque. Iteration is done + * in reverse element order. + */ + reverse_iterator + rend() + { return reverse_iterator(this->_M_impl._M_start); } + + /** + * 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 + rend() const + { return const_reverse_iterator(this->_M_impl._M_start); } + +#ifdef __GXX_EXPERIMENTAL_CXX0X__ + /** + * 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 + { 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 + { 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 + { 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 + { 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 + { 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 _M_get_Tp_allocator().max_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. + * + * 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, 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 + insert(this->_M_impl._M_finish, __new_size - __len, __x); + } + + /** + * Returns true if the %deque is empty. (Thus begin() would + * equal end().) + */ + bool + empty() const + { 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 + * accessed. + * @return Read/write reference to data. + * + * This operator allows for easy, array-style, data access. + * Note that data access with this operator is unchecked and + * out_of_range lookups are not defined. (For checked lookups + * see at().) + */ + reference + operator[](size_type __n) + { 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 + * accessed. + * @return Read-only (constant) reference to data. + * + * This operator allows for easy, array-style, data access. + * Note that data access with this operator is unchecked and + * out_of_range lookups are not defined. (For checked lookups + * see at().) + */ + const_reference + operator[](size_type __n) const + { return this->_M_impl._M_start[difference_type(__n)]; } + + protected: + /// 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")); + } + + public: + /** + * @brief Provides access to the data contained in the %deque. + * @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. + * + * This function provides for safer data access. The parameter + * is first checked that it is in the range of the deque. The + * function throws out_of_range if the check fails. + */ + reference + at(size_type __n) + { + _M_range_check(__n); + return (*this)[__n]; + } + + /** + * @brief Provides access to the data contained in the %deque. + * @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. + * + * This function provides for safer data access. The parameter is first + * checked that it is in the range of the deque. The function throws + * out_of_range if the check fails. + */ + const_reference + at(size_type __n) const + { + _M_range_check(__n); + return (*this)[__n]; + } + + /** + * Returns a read/write reference to the data at the first + * element of the %deque. + */ + reference + front() + { return *begin(); } + + /** + * Returns a read-only (constant) reference to the data at the first + * element of the %deque. + */ + const_reference + front() const + { return *begin(); } + + /** + * Returns a read/write reference to the data at the last element of the + * %deque. + */ + reference + back() + { + iterator __tmp = end(); + --__tmp; + return *__tmp; + } + + /** + * Returns a read-only (constant) reference to the data at the last + * element of the %deque. + */ + const_reference + back() const + { + const_iterator __tmp = end(); + --__tmp; + return *__tmp; + } + + // [23.2.1.2] modifiers + /** + * @brief Add data to the front of the %deque. + * @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 + * data to it. Due to the nature of a %deque this operation + * can be done in constant time. + */ + void + push_front(const value_type& __x) + { + 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); + --this->_M_impl._M_start._M_cur; + } + else + _M_push_front_aux(__x); + } + +#ifdef __GXX_EXPERIMENTAL_CXX0X__ + 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. + * + * This is a typical stack operation. The function creates an + * element at the end of the %deque and assigns the given data + * to it. Due to the nature of a %deque this operation can be + * done in constant time. + */ + void + push_back(const value_type& __x) + { + 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); + ++this->_M_impl._M_finish._M_cur; + } + else + _M_push_back_aux(__x); + } + +#ifdef __GXX_EXPERIMENTAL_CXX0X__ + void + push_back(value_type&& __x) + { emplace_back(std::move(__x)); } + + template<typename... _Args> + void + emplace_back(_Args&&... __args); +#endif + + /** + * @brief Removes first element. + * + * This is a typical stack operation. It shrinks the %deque by one. + * + * Note that no data is returned, and if the first element's data is + * needed, it should be retrieved before pop_front() is called. + */ + void + pop_front() + { + 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); + ++this->_M_impl._M_start._M_cur; + } + else + _M_pop_front_aux(); + } + + /** + * @brief Removes last element. + * + * This is a typical stack operation. It shrinks the %deque by one. + * + * Note that no data is returned, and if the last element's data is + * needed, it should be retrieved before pop_back() is called. + */ + void + pop_back() + { + 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); + } + else + _M_pop_back_aux(); + } + +#ifdef __GXX_EXPERIMENTAL_CXX0X__ + /** + * @brief Inserts an object in %deque before specified iterator. + * @param position An 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(iterator __position, _Args&&... __args); +#endif + + /** + * @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 + * specified location. + */ + iterator + insert(iterator __position, const value_type& __x); + +#ifdef __GXX_EXPERIMENTAL_CXX0X__ + /** + * @brief Inserts given rvalue 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 rvalue before the + * specified location. + */ + iterator + insert(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 "list insert." + */ + void + insert(iterator __p, initializer_list<value_type> __l) + { this->insert(__p, __l.begin(), __l.end()); } +#endif + + /** + * @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. + * + * This function will insert a specified number of copies of the given + * 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); } + + /** + * @brief Inserts a range into the %deque. + * @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." + */ + template<typename _InputIterator> + void + insert(iterator __position, _InputIterator __first, + _InputIterator __last) + { + // Check whether it's an integral type. If so, it's not an iterator. + typedef typename std::__is_integer<_InputIterator>::__type _Integral; + _M_insert_dispatch(__position, __first, __last, _Integral()); + } + + /** + * @brief Remove element at given position. + * @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 + * shorten the %deque by one. + * + * 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 responsibility. + */ + iterator + erase(iterator __position); + + /** + * @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 + * 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. + * + * 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 responsibility. + */ + iterator + erase(iterator __first, iterator __last); + + /** + * @brief Swaps data with another %deque. + * @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.) + * Note that the global std::swap() function is specialized such that + * std::swap(d1,d2) will feed to this function. + */ + void +#ifdef __GXX_EXPERIMENTAL_CXX0X__ + swap(deque&& __x) +#else + swap(deque& __x) +#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); + + // _GLIBCXX_RESOLVE_LIB_DEFECTS + // 431. Swapping containers with unequal allocators. + std::__alloc_swap<_Tp_alloc_type>::_S_do_it(_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 responsibility. + */ + void + clear() + { _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(static_cast<size_type>(__n)); + _M_fill_initialize(__x); + } + + // called by the range constructor to implement [23.1.1]/9 + template<typename _InputIterator> + void + _M_initialize_dispatch(_InputIterator __first, _InputIterator __last, + __false_type) + { + typedef typename std::iterator_traits<_InputIterator>:: + iterator_category _IterCategory; + _M_range_initialize(__first, __last, _IterCategory()); + } + + // called by the second initialize_dispatch above + //@{ + /** + * @brief Fills the deque with whatever is in [first,last). + * @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. + */ + template<typename _InputIterator> + void + _M_range_initialize(_InputIterator __first, _InputIterator __last, + std::input_iterator_tag); + + // called by the second initialize_dispatch above + template<typename _ForwardIterator> + void + _M_range_initialize(_ForwardIterator __first, _ForwardIterator __last, + std::forward_iterator_tag); + //@} + + /** + * @brief Fills the %deque with copies of 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). + */ + void + _M_fill_initialize(const value_type& __value); + + // 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(__n, __val); } + + // called by the range assign to implement [23.1.1]/9 + template<typename _InputIterator> + void + _M_assign_dispatch(_InputIterator __first, _InputIterator __last, + __false_type) + { + typedef typename std::iterator_traits<_InputIterator>:: + iterator_category _IterCategory; + _M_assign_aux(__first, __last, _IterCategory()); + } + + // called by the second assign_dispatch above + template<typename _InputIterator> + void + _M_assign_aux(_InputIterator __first, _InputIterator __last, + std::input_iterator_tag); + + // called by the second assign_dispatch above + template<typename _ForwardIterator> + void + _M_assign_aux(_ForwardIterator __first, _ForwardIterator __last, + std::forward_iterator_tag) + { + const size_type __len = std::distance(__first, __last); + if (__len > size()) + { + _ForwardIterator __mid = __first; + std::advance(__mid, size()); + std::copy(__first, __mid, begin()); + insert(end(), __mid, __last); + } + else + _M_erase_at_end(std::copy(__first, __last, begin())); + } + + // Called by assign(n,t), and the range assign when it turns out + // to be the same thing. + void + _M_fill_assign(size_type __n, const value_type& __val) + { + if (__n > size()) + { + std::fill(begin(), end(), __val); + insert(end(), __n - size(), __val); + } + else + { + _M_erase_at_end(begin() + difference_type(__n)); + std::fill(begin(), end(), __val); + } + } + + //@{ + /// Helper functions for push_* and pop_*. +#ifndef __GXX_EXPERIMENTAL_CXX0X__ + 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(); + + void _M_pop_front_aux(); + //@} + + // Internal insert functions follow. The *_aux functions do the actual + // 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, __n, __x); } + + // called by the range insert to implement [23.1.1]/9 + template<typename _InputIterator> + void + _M_insert_dispatch(iterator __pos, + _InputIterator __first, _InputIterator __last, + __false_type) + { + typedef typename std::iterator_traits<_InputIterator>:: + iterator_category _IterCategory; + _M_range_insert_aux(__pos, __first, __last, _IterCategory()); + } + + // called by the second insert_dispatch above + template<typename _InputIterator> + void + _M_range_insert_aux(iterator __pos, _InputIterator __first, + _InputIterator __last, std::input_iterator_tag); + + // called by the second insert_dispatch above + template<typename _ForwardIterator> + void + _M_range_insert_aux(iterator __pos, _ForwardIterator __first, + _ForwardIterator __last, std::forward_iterator_tag); + + // Called by insert(p,n,x), and the range insert when it turns out to be + // the same thing. Can use fill functions in optimal situations, + // otherwise passes off to insert_aux(p,n,x). + void + _M_fill_insert(iterator __pos, size_type __n, const value_type& __x); + + // called by insert(p,x) +#ifndef __GXX_EXPERIMENTAL_CXX0X__ + 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 + _M_insert_aux(iterator __pos, size_type __n, const value_type& __x); + + // called by range_insert_aux for forward iterators + template<typename _ForwardIterator> + void + _M_insert_aux(iterator __pos, + _ForwardIterator __first, _ForwardIterator __last, + size_type __n); + + + // Internal erase functions follow. + + void + _M_destroy_data_aux(iterator __first, iterator __last); + + // Called by ~deque(). + // NB: Doesn't deallocate the nodes. + template<typename _Alloc1> + void + _M_destroy_data(iterator __first, iterator __last, const _Alloc1&) + { _M_destroy_data_aux(__first, __last); } + + void + _M_destroy_data(iterator __first, iterator __last, + const std::allocator<_Tp>&) + { + if (!__has_trivial_destructor(value_type)) + _M_destroy_data_aux(__first, __last); + } + + // Called by erase(q1, q2). + void + _M_erase_at_begin(iterator __pos) + { + _M_destroy_data(begin(), __pos, _M_get_Tp_allocator()); + _M_destroy_nodes(this->_M_impl._M_start._M_node, __pos._M_node); + this->_M_impl._M_start = __pos; + } + + // Called by erase(q1, q2), resize(), clear(), _M_assign_aux, + // _M_fill_assign, operator=. + void + _M_erase_at_end(iterator __pos) + { + _M_destroy_data(__pos, end(), _M_get_Tp_allocator()); + _M_destroy_nodes(__pos._M_node + 1, + this->_M_impl._M_finish._M_node + 1); + this->_M_impl._M_finish = __pos; + } + + //@{ + /// Memory-handling helpers for the previous internal insert functions. + iterator + _M_reserve_elements_at_front(size_type __n) + { + const size_type __vacancies = this->_M_impl._M_start._M_cur + - this->_M_impl._M_start._M_first; + if (__n > __vacancies) + _M_new_elements_at_front(__n - __vacancies); + return this->_M_impl._M_start - difference_type(__n); + } + + iterator + _M_reserve_elements_at_back(size_type __n) + { + const size_type __vacancies = (this->_M_impl._M_finish._M_last + - this->_M_impl._M_finish._M_cur) - 1; + if (__n > __vacancies) + _M_new_elements_at_back(__n - __vacancies); + return this->_M_impl._M_finish + difference_type(__n); + } + + void + _M_new_elements_at_front(size_type __new_elements); + + void + _M_new_elements_at_back(size_type __new_elements); + //@} + + + //@{ + /** + * @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.) + */ + void + _M_reserve_map_at_back(size_type __nodes_to_add = 1) + { + if (__nodes_to_add + 1 > this->_M_impl._M_map_size + - (this->_M_impl._M_finish._M_node - this->_M_impl._M_map)) + _M_reallocate_map(__nodes_to_add, false); + } + + void + _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)) + _M_reallocate_map(__nodes_to_add, true); + } + + void + _M_reallocate_map(size_type __nodes_to_add, bool __add_at_front); + //@} + }; + + + /** + * @brief Deque equality comparison. + * @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 + * deques. Deques are considered equivalent if their sizes are equal, + * and if corresponding elements compare equal. + */ + template<typename _Tp, typename _Alloc> + inline bool + operator==(const deque<_Tp, _Alloc>& __x, + const deque<_Tp, _Alloc>& __y) + { return __x.size() == __y.size() + && std::equal(__x.begin(), __x.end(), __y.begin()); } + + /** + * @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. + * + * This is a total ordering relation. It is linear in the size of the + * deques. The elements must be comparable with @c <. + * + * See std::lexicographical_compare() for how the determination is made. + */ + template<typename _Tp, typename _Alloc> + inline bool + operator<(const deque<_Tp, _Alloc>& __x, + const deque<_Tp, _Alloc>& __y) + { return std::lexicographical_compare(__x.begin(), __x.end(), + __y.begin(), __y.end()); } + + /// Based on operator== + template<typename _Tp, typename _Alloc> + inline bool + operator!=(const deque<_Tp, _Alloc>& __x, + const deque<_Tp, _Alloc>& __y) + { return !(__x == __y); } + + /// Based on operator< + template<typename _Tp, typename _Alloc> + inline bool + operator>(const deque<_Tp, _Alloc>& __x, + const deque<_Tp, _Alloc>& __y) + { return __y < __x; } + + /// Based on operator< + template<typename _Tp, typename _Alloc> + inline bool + operator<=(const deque<_Tp, _Alloc>& __x, + const deque<_Tp, _Alloc>& __y) + { return !(__y < __x); } + + /// Based on operator< + template<typename _Tp, typename _Alloc> + inline bool + operator>=(const deque<_Tp, _Alloc>& __x, + const deque<_Tp, _Alloc>& __y) + { return !(__x < __y); } + + /// See std::deque::swap(). + template<typename _Tp, typename _Alloc> + inline void + swap(deque<_Tp,_Alloc>& __x, deque<_Tp,_Alloc>& __y) + { __x.swap(__y); } + +#ifdef __GXX_EXPERIMENTAL_CXX0X__ + template<typename _Tp, typename _Alloc> + inline void + swap(deque<_Tp,_Alloc>&& __x, deque<_Tp,_Alloc>& __y) + { __x.swap(__y); } + + template<typename _Tp, typename _Alloc> + inline void + swap(deque<_Tp,_Alloc>& __x, deque<_Tp,_Alloc>&& __y) + { __x.swap(__y); } +#endif + +_GLIBCXX_END_NESTED_NAMESPACE + +#endif /* _STL_DEQUE_H */ |