e4c62b265d
2002-05-21 Phil Edwards <pme@gcc.gnu.org> * include/bits/stl_vector.h: Reformat to follow C++STYLE. Doxygenate all public members. Reorder to follow 14882. (vector::push_back(void)): Remove previously-deprecated fn. (vector::insert(iterator), vector::_M_insert_aux(iterator)): Deprecate for removal in 3.3. From-SVN: r53696
1267 lines
41 KiB
C++
1267 lines
41 KiB
C++
// Vector implementation -*- C++ -*-
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// Copyright (C) 2001, 2002 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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/*
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*
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* Copyright (c) 1994
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* Hewlett-Packard Company
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation. Hewlett-Packard Company makes no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*
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*
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* Copyright (c) 1996
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* Silicon Graphics Computer Systems, Inc.
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation. Silicon Graphics makes no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*/
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/** @file stl_vector.h
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* This is an internal header file, included by other library headers.
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* You should not attempt to use it directly.
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*/
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#ifndef __GLIBCPP_INTERNAL_VECTOR_H
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#define __GLIBCPP_INTERNAL_VECTOR_H
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#include <bits/stl_iterator_base_funcs.h>
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#include <bits/functexcept.h>
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#include <bits/concept_check.h>
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// Since this entire file is within namespace std, there's no reason to
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// waste two spaces along the left column. Thus the leading indentation is
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// slightly violated from here on.
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namespace std
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{
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/// @if maint Primary default version. @endif
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/**
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* @if maint
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* See bits/stl_deque.h's _Deque_alloc_base for an explanation.
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* @endif
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*/
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template <class _Tp, class _Allocator, bool _IsStatic>
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class _Vector_alloc_base
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{
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public:
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typedef typename _Alloc_traits<_Tp, _Allocator>::allocator_type
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allocator_type;
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allocator_type
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get_allocator() const { return _M_data_allocator; }
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_Vector_alloc_base(const allocator_type& __a)
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: _M_data_allocator(__a), _M_start(0), _M_finish(0), _M_end_of_storage(0)
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{}
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protected:
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allocator_type _M_data_allocator;
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_Tp* _M_start;
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_Tp* _M_finish;
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_Tp* _M_end_of_storage;
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_Tp*
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_M_allocate(size_t __n) { return _M_data_allocator.allocate(__n); }
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void
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_M_deallocate(_Tp* __p, size_t __n)
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{ if (__p) _M_data_allocator.deallocate(__p, __n); }
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};
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/// @if maint Specialization for instanceless allocators. @endif
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template <class _Tp, class _Allocator>
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class _Vector_alloc_base<_Tp, _Allocator, true>
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{
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public:
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typedef typename _Alloc_traits<_Tp, _Allocator>::allocator_type
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allocator_type;
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allocator_type
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get_allocator() const { return allocator_type(); }
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_Vector_alloc_base(const allocator_type&)
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: _M_start(0), _M_finish(0), _M_end_of_storage(0)
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{}
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protected:
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_Tp* _M_start;
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_Tp* _M_finish;
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_Tp* _M_end_of_storage;
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typedef typename _Alloc_traits<_Tp, _Allocator>::_Alloc_type _Alloc_type;
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_Tp*
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_M_allocate(size_t __n) { return _Alloc_type::allocate(__n); }
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void
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_M_deallocate(_Tp* __p, size_t __n) { _Alloc_type::deallocate(__p, __n);}
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};
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/**
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* @if maint
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* See bits/stl_deque.h's _Deque_base for an explanation.
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* @endif
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*/
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template <class _Tp, class _Alloc>
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struct _Vector_base
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: public _Vector_alloc_base<_Tp, _Alloc,
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_Alloc_traits<_Tp, _Alloc>::_S_instanceless>
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{
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typedef _Vector_alloc_base<_Tp, _Alloc,
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_Alloc_traits<_Tp, _Alloc>::_S_instanceless>
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_Base;
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typedef typename _Base::allocator_type allocator_type;
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_Vector_base(const allocator_type& __a)
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: _Base(__a) {}
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_Vector_base(size_t __n, const allocator_type& __a)
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: _Base(__a)
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{
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_M_start = _M_allocate(__n);
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_M_finish = _M_start;
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_M_end_of_storage = _M_start + __n;
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}
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~_Vector_base() { _M_deallocate(_M_start, _M_end_of_storage - _M_start); }
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};
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/**
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* @brief A standard container which offers fixed time access to individual
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* elements in any order.
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*
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* @ingroup Containers
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* @ingroup Sequences
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*
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* Meets the requirements of a <a href="tables.html#65">container</a>, a
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* <a href="tables.html#66">reversible container</a>, and a
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* <a href="tables.html#67">sequence</a>, including the
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* <a href="tables.html#68">optional sequence requirements</a> with the
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* %exception of @c push_front and @c pop_front.
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*
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* In some terminology a %vector can be described as a dynamic C-style array,
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* it offers fast and efficient access to individual elements in any order
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* and saves the user from worrying about memory and size allocation.
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* Subscripting ( @c [] ) access is also provided as with C-style arrays.
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*/
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template <class _Tp, class _Alloc = allocator<_Tp> >
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class vector : protected _Vector_base<_Tp, _Alloc>
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{
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// concept requirements
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__glibcpp_class_requires(_Tp, _SGIAssignableConcept)
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typedef _Vector_base<_Tp, _Alloc> _Base;
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typedef vector<_Tp, _Alloc> vector_type;
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public:
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typedef _Tp value_type;
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typedef value_type* pointer;
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typedef const value_type* const_pointer;
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typedef __gnu_cxx::__normal_iterator<pointer, vector_type> iterator;
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typedef __gnu_cxx::__normal_iterator<const_pointer, vector_type>
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const_iterator;
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typedef reverse_iterator<const_iterator> const_reverse_iterator;
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typedef reverse_iterator<iterator> reverse_iterator;
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typedef value_type& reference;
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typedef const value_type& const_reference;
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typedef size_t size_type;
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typedef ptrdiff_t difference_type;
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typedef typename _Base::allocator_type allocator_type;
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protected:
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/** @if maint
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* These two functions and three data members are all from the top-most
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* base class, which varies depending on the type of %allocator. They
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* should be pretty self-explanatory, as %vector uses a simple contiguous
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* allocation scheme.
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* @endif
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*/
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using _Base::_M_allocate;
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using _Base::_M_deallocate;
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using _Base::_M_start;
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using _Base::_M_finish;
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using _Base::_M_end_of_storage;
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protected:
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void _M_insert_aux(iterator __position, const _Tp& __x);
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#ifdef _GLIBCPP_DEPRECATED
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void _M_insert_aux(iterator __position);
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#endif
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public:
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// [23.2.4.1] construct/copy/destroy
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// (assign() and get_allocator() are also listed in this section)
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/**
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* @brief Default constructor creates no elements.
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*/
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explicit
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vector(const allocator_type& __a = allocator_type())
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: _Base(__a) {}
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/**
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* @brief Create a %vector with copies of an exemplar element.
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* @param n The number of elements to initially create.
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* @param value An element to copy.
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*
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* This constructor fills the %vector with @a n copies of @a value.
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*/
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vector(size_type __n, const _Tp& __value,
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const allocator_type& __a = allocator_type())
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: _Base(__n, __a)
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{ _M_finish = uninitialized_fill_n(_M_start, __n, __value); }
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/**
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* @brief Create a %vector with default elements.
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* @param n The number of elements to initially create.
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*
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* This constructor fills the %vector with @a n copies of a
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* default-constructed element.
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*/
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explicit
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vector(size_type __n)
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: _Base(__n, allocator_type())
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{ _M_finish = uninitialized_fill_n(_M_start, __n, _Tp()); }
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/**
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* @brief %Vector copy constructor.
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* @param x A %vector of identical element and allocator types.
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*
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* The newly-created %vector uses a copy of the allocation object used
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* by @a x. All the elements of @a x are copied, but any extra memory in
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* @a x (for fast expansion) will not be copied.
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*/
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vector(const vector<_Tp, _Alloc>& __x)
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: _Base(__x.size(), __x.get_allocator())
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{ _M_finish = uninitialized_copy(__x.begin(), __x.end(), _M_start); }
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/**
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* @brief Builds a %vector from a range.
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* @param first An input iterator.
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* @param last An input iterator.
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*
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* Creats a %vector consisting of copies of the elements from [first,last).
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*
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* If the iterators are forward, bidirectional, or random-access, then
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* this will call the elements' copy constructor N times (where N is
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* distance(first,last)) and do no memory reallocation. But if only
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* input iterators are used, then this will do at most 2N calls to the
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* copy constructor, and logN memory reallocations.
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*/
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template <class _InputIterator>
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vector(_InputIterator __first, _InputIterator __last,
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const allocator_type& __a = allocator_type())
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: _Base(__a)
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{
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// Check whether it's an integral type. If so, it's not an iterator.
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typedef typename _Is_integer<_InputIterator>::_Integral _Integral;
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_M_initialize_aux(__first, __last, _Integral());
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}
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protected:
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template<class _Integer>
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void
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_M_initialize_aux(_Integer __n, _Integer __value, __true_type)
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{
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_M_start = _M_allocate(__n);
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_M_end_of_storage = _M_start + __n;
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_M_finish = uninitialized_fill_n(_M_start, __n, __value);
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}
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template<class _InputIterator>
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void
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_M_initialize_aux(_InputIterator __first,_InputIterator __last,__false_type)
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{
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typedef typename iterator_traits<_InputIterator>::iterator_category
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_IterCategory;
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_M_range_initialize(__first, __last, _IterCategory());
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}
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public:
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/**
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* Creats a %vector consisting of copies of the elements from [first,last).
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*
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* The dtor only erases the elements, and that if the elements
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* themselves are pointers, the pointed-to memory is not touched in any
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* way. Managing the pointer is the user's responsibilty.
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*/
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~vector() { _Destroy(_M_start, _M_finish); }
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/**
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* @brief %Vector assignment operator.
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* @param x A %vector of identical element and allocator types.
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*
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* All the elements of @a x are copied, but any extra memory in @a x (for
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* fast expansion) will not be copied. Unlike the copy constructor, the
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* allocator object is not copied.
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*/
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vector<_Tp, _Alloc>&
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operator=(const vector<_Tp, _Alloc>& __x);
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/**
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* @brief Assigns a given value to a %vector.
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* @param n Number of elements to be assigned.
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* @param val Value to be assigned.
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*
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* This function fills a %vector with @a n copies of the given value.
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* Note that the assignment completely changes the %vector and that the
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* resulting %vector's size is the same as the number of elements assigned.
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* Old data may be lost.
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*/
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void
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assign(size_type __n, const _Tp& __val) { _M_fill_assign(__n, __val); }
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protected:
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void
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_M_fill_assign(size_type __n, const _Tp& __val);
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public:
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/**
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* @brief Assigns a range to a %vector.
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* @param first An input iterator.
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* @param last An input iterator.
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*
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* This function fills a %vector with copies of the elements in the
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* range [first,last).
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*
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* Note that the assignment completely changes the %vector and that the
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* resulting %vector's size is the same as the number of elements assigned.
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* Old data may be lost.
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*/
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template<class _InputIterator>
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void
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assign(_InputIterator __first, _InputIterator __last)
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{
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typedef typename _Is_integer<_InputIterator>::_Integral _Integral;
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_M_assign_dispatch(__first, __last, _Integral());
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}
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protected:
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template<class _Integer>
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void
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_M_assign_dispatch(_Integer __n, _Integer __val, __true_type)
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{ _M_fill_assign((size_type) __n, (_Tp) __val); }
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template<class _InputIter>
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void
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_M_assign_dispatch(_InputIter __first, _InputIter __last, __false_type)
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{
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typedef typename iterator_traits<_InputIter>::iterator_category
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_IterCategory;
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_M_assign_aux(__first, __last, _IterCategory());
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}
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template <class _InputIterator>
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void
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_M_assign_aux(_InputIterator __first, _InputIterator __last,
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input_iterator_tag);
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template <class _ForwardIterator>
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void
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_M_assign_aux(_ForwardIterator __first, _ForwardIterator __last,
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forward_iterator_tag);
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public:
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/// Get a copy of the memory allocation object.
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allocator_type
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get_allocator() const { return _Base::get_allocator(); }
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// iterators
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/**
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* Returns a read/write iterator that points to the first element in the
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* %vector. Iteration is done in ordinary element order.
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*/
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iterator
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begin() { return iterator (_M_start); }
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/**
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* Returns a read-only (constant) iterator that points to the first element
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* in the %vector. Iteration is done in ordinary element order.
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*/
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const_iterator
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begin() const { return const_iterator (_M_start); }
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/**
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* Returns a read/write iterator that points one past the last element in
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* the %vector. Iteration is done in ordinary element order.
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*/
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iterator
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end() { return iterator (_M_finish); }
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/**
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* Returns a read-only (constant) iterator that points one past the last
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* element in the %vector. Iteration is done in ordinary element order.
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*/
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const_iterator
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end() const { return const_iterator (_M_finish); }
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/**
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* Returns a read/write reverse iterator that points to the last element in
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* the %vector. Iteration is done in reverse element order.
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*/
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reverse_iterator
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rbegin() { return reverse_iterator(end()); }
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/**
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* Returns a read-only (constant) reverse iterator that points to the last
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* element in the %vector. Iteration is done in reverse element order.
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*/
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const_reverse_iterator
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rbegin() const { return const_reverse_iterator(end()); }
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/**
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* Returns a read/write reverse iterator that points to one before the
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* first element in the %vector. Iteration is done in reverse element
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* order.
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*/
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reverse_iterator
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rend() { return reverse_iterator(begin()); }
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/**
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* Returns a read-only (constant) reverse iterator that points to one
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* before the first element in the %vector. Iteration is done in reverse
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* element order.
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*/
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const_reverse_iterator
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rend() const { return const_reverse_iterator(begin()); }
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// [23.2.4.2] capacity
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/** Returns the number of elements in the %vector. */
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size_type
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size() const { return size_type(end() - begin()); }
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/** Returns the size() of the largest possible %vector. */
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size_type
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max_size() const { return size_type(-1) / sizeof(_Tp); }
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/**
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* @brief Resizes the %vector to the specified number of elements.
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* @param new_size Number of elements the %vector should contain.
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* @param x Data with which new elements should be populated.
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*
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* This function will %resize the %vector to the specified number of
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* elements. If the number is smaller than the %vector's current size the
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* %vector is truncated, otherwise the %vector is extended and new elements
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* are populated with given data.
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*/
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void
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resize(size_type __new_size, const _Tp& __x)
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{
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if (__new_size < size())
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erase(begin() + __new_size, end());
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else
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insert(end(), __new_size - size(), __x);
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}
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/**
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* @brief Resizes the %vector to the specified number of elements.
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* @param new_size Number of elements the %vector should contain.
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*
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* This function will resize the %vector to the specified number of
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* elements. If the number is smaller than the %vector's current size the
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* %vector is truncated, otherwise the %vector is extended and new elements
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* are default-constructed.
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*/
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void
|
|
resize(size_type __new_size) { resize(__new_size, _Tp()); }
|
|
|
|
/**
|
|
* Returns the total number of elements that the %vector can hold before
|
|
* needing to allocate more memory.
|
|
*/
|
|
size_type
|
|
capacity() const
|
|
{ return size_type(const_iterator(_M_end_of_storage) - begin()); }
|
|
|
|
/**
|
|
* Returns true if the %vector is empty. (Thus begin() would equal end().)
|
|
*/
|
|
bool
|
|
empty() const { return begin() == end(); }
|
|
|
|
/**
|
|
* @brief Attempt to preallocate enough memory for specified number of
|
|
* elements.
|
|
* @param n Number of elements required.
|
|
* @throw std::length_error If @a n exceeds @c max_size().
|
|
*
|
|
* This function attempts to reserve enough memory for the %vector to hold
|
|
* the specified number of elements. If the number requested is more than
|
|
* max_size(), length_error is thrown.
|
|
*
|
|
* The advantage of this function is that if optimal code is a necessity
|
|
* and the user can determine the number of elements that will be required,
|
|
* the user can reserve the memory in %advance, and thus prevent a possible
|
|
* reallocation of memory and copying of %vector data.
|
|
*/
|
|
void
|
|
reserve(size_type __n) // FIXME should be out of class
|
|
{
|
|
if (capacity() < __n) {
|
|
const size_type __old_size = size();
|
|
pointer __tmp = _M_allocate_and_copy(__n, _M_start, _M_finish);
|
|
_Destroy(_M_start, _M_finish);
|
|
_M_deallocate(_M_start, _M_end_of_storage - _M_start);
|
|
_M_start = __tmp;
|
|
_M_finish = __tmp + __old_size;
|
|
_M_end_of_storage = _M_start + __n;
|
|
}
|
|
}
|
|
|
|
// element access
|
|
/**
|
|
* @brief Subscript access to the data contained in the %vector.
|
|
* @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 *(begin() + __n); }
|
|
|
|
/**
|
|
* @brief Subscript access to the data contained in the %vector.
|
|
* @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 *(begin() + __n); }
|
|
|
|
protected:
|
|
/// @if maint Safety check used only from at(). @endif
|
|
void
|
|
_M_range_check(size_type __n) const
|
|
{
|
|
if (__n >= this->size())
|
|
__throw_out_of_range("vector [] access out of range");
|
|
}
|
|
|
|
public:
|
|
/**
|
|
* @brief Provides access to the data contained in the %vector.
|
|
* @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 vector. 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 %vector.
|
|
* @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 vector. 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
|
|
* %vector.
|
|
*/
|
|
reference
|
|
front() { return *begin(); }
|
|
|
|
/**
|
|
* Returns a read-only (constant) reference to the data at the first
|
|
* element of the %vector.
|
|
*/
|
|
const_reference
|
|
front() const { return *begin(); }
|
|
|
|
/**
|
|
* Returns a read/write reference to the data at the last element of the
|
|
* %vector.
|
|
*/
|
|
reference
|
|
back() { return *(end() - 1); }
|
|
|
|
/**
|
|
* Returns a read-only (constant) reference to the data at the last
|
|
* element of the %vector.
|
|
*/
|
|
const_reference
|
|
back() const { return *(end() - 1); }
|
|
|
|
// [23.2.4.3] modifiers
|
|
/**
|
|
* @brief Add data to the end of the %vector.
|
|
* @param x Data to be added.
|
|
*
|
|
* This is a typical stack operation. The function creates an element at
|
|
* the end of the %vector and assigns the given data to it.
|
|
* Due to the nature of a %vector this operation can be done in constant
|
|
* time if the %vector has preallocated space available.
|
|
*/
|
|
void
|
|
push_back(const _Tp& __x)
|
|
{
|
|
if (_M_finish != _M_end_of_storage) {
|
|
_Construct(_M_finish, __x);
|
|
++_M_finish;
|
|
}
|
|
else
|
|
_M_insert_aux(end(), __x);
|
|
}
|
|
|
|
/**
|
|
* @brief Removes last element.
|
|
*
|
|
* This is a typical stack operation. It shrinks the %vector 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()
|
|
{
|
|
--_M_finish;
|
|
_Destroy(_M_finish);
|
|
}
|
|
|
|
/**
|
|
* @brief Inserts given value into %vector before specified iterator.
|
|
* @param position An iterator into the %vector.
|
|
* @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.
|
|
* Note that this kind of operation could be expensive for a %vector and if
|
|
* it is frequently used the user should consider using std::list.
|
|
*/
|
|
iterator
|
|
insert(iterator __position, const _Tp& __x)
|
|
{
|
|
size_type __n = __position - begin();
|
|
if (_M_finish != _M_end_of_storage && __position == end()) {
|
|
_Construct(_M_finish, __x);
|
|
++_M_finish;
|
|
}
|
|
else
|
|
_M_insert_aux(iterator(__position), __x);
|
|
return begin() + __n;
|
|
}
|
|
|
|
#ifdef _GLIBCPP_DEPRECATED
|
|
/**
|
|
* @brief Inserts an element into the %vector.
|
|
* @param position An iterator into the %vector.
|
|
* @return An iterator that points to the inserted element.
|
|
*
|
|
* This function will insert a default-constructed element before the
|
|
* specified location. You should consider using insert(position,Tp())
|
|
* instead.
|
|
* Note that this kind of operation could be expensive for a vector and if
|
|
* it is frequently used the user should consider using std::list.
|
|
*
|
|
* @note This was deprecated in 3.2 and will be removed in 3.3. You must
|
|
* define @c _GLIBCPP_DEPRECATED to make this visible in 3.2; see
|
|
* c++config.h.
|
|
*/
|
|
iterator
|
|
insert(iterator __position)
|
|
{
|
|
size_type __n = __position - begin();
|
|
if (_M_finish != _M_end_of_storage && __position == end()) {
|
|
_Construct(_M_finish);
|
|
++_M_finish;
|
|
}
|
|
else
|
|
_M_insert_aux(iterator(__position));
|
|
return begin() + __n;
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* @brief Inserts a number of copies of given data into the %vector.
|
|
* @param position An iterator into the %vector.
|
|
* @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.
|
|
*
|
|
* Note that this kind of operation could be expensive for a %vector and if
|
|
* it is frequently used the user should consider using std::list.
|
|
*/
|
|
void
|
|
insert (iterator __pos, size_type __n, const _Tp& __x)
|
|
{ _M_fill_insert(__pos, __n, __x); }
|
|
|
|
protected:
|
|
void
|
|
_M_fill_insert (iterator __pos, size_type __n, const _Tp& __x);
|
|
|
|
public:
|
|
/**
|
|
* @brief Inserts a range into the %vector.
|
|
* @param pos An iterator into the %vector.
|
|
* @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 %vector before the location specified by @a pos.
|
|
*
|
|
* Note that this kind of operation could be expensive for a %vector and if
|
|
* it is frequently used the user should consider using std::list.
|
|
*/
|
|
template<class _InputIterator>
|
|
void
|
|
insert(iterator __pos, _InputIterator __first, _InputIterator __last)
|
|
{
|
|
// Check whether it's an integral type. If so, it's not an iterator.
|
|
typedef typename _Is_integer<_InputIterator>::_Integral _Integral;
|
|
_M_insert_dispatch(__pos, __first, __last, _Integral());
|
|
}
|
|
|
|
protected:
|
|
template<class _Integer>
|
|
void
|
|
_M_insert_dispatch(iterator __pos, _Integer __n, _Integer __val,
|
|
__true_type)
|
|
{
|
|
_M_fill_insert(__pos, static_cast<size_type>(__n),
|
|
static_cast<_Tp>(__val));
|
|
}
|
|
|
|
template<class _InputIterator>
|
|
void
|
|
_M_insert_dispatch(iterator __pos, _InputIterator __first,
|
|
_InputIterator __last, __false_type)
|
|
{
|
|
typedef typename iterator_traits<_InputIterator>::iterator_category
|
|
_IterCategory;
|
|
_M_range_insert(__pos, __first, __last, _IterCategory());
|
|
}
|
|
|
|
public:
|
|
/**
|
|
* @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 %vector by one.
|
|
*
|
|
* Note This operation could be expensive and if it is frequently used the
|
|
* user should consider using std::list. The user is also 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.
|
|
*/
|
|
iterator
|
|
erase(iterator __position)
|
|
{
|
|
if (__position + 1 != end())
|
|
copy(__position + 1, end(), __position);
|
|
--_M_finish;
|
|
_Destroy(_M_finish);
|
|
return __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 %vector accordingly.
|
|
*
|
|
* Note This operation could be expensive and if it is frequently used the
|
|
* user should consider using std::list. The user is also 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.
|
|
*/
|
|
iterator
|
|
erase(iterator __first, iterator __last)
|
|
{
|
|
iterator __i(copy(__last, end(), __first));
|
|
_Destroy(__i, end());
|
|
_M_finish = _M_finish - (__last - __first);
|
|
return __first;
|
|
}
|
|
|
|
/**
|
|
* @brief Swaps data with another %vector.
|
|
* @param x A %vector of the same element and allocator types.
|
|
*
|
|
* This exchanges the elements between two vectors in constant time.
|
|
* (Three pointers, so it should be quite fast.)
|
|
* Note that the global std::swap() function is specialized such that
|
|
* std::swap(v1,v2) will feed to this function.
|
|
*/
|
|
void
|
|
swap(vector<_Tp, _Alloc>& __x)
|
|
{
|
|
std::swap(_M_start, __x._M_start);
|
|
std::swap(_M_finish, __x._M_finish);
|
|
std::swap(_M_end_of_storage, __x._M_end_of_storage);
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
*/
|
|
void
|
|
clear() { erase(begin(), end()); }
|
|
|
|
protected:
|
|
template <class _ForwardIterator>
|
|
pointer
|
|
_M_allocate_and_copy(size_type __n, _ForwardIterator __first,
|
|
_ForwardIterator __last)
|
|
{
|
|
pointer __result = _M_allocate(__n);
|
|
try
|
|
{
|
|
uninitialized_copy(__first, __last, __result);
|
|
return __result;
|
|
}
|
|
catch(...)
|
|
{
|
|
_M_deallocate(__result, __n);
|
|
__throw_exception_again;
|
|
}
|
|
}
|
|
|
|
template <class _InputIterator>
|
|
void
|
|
_M_range_initialize(_InputIterator __first,
|
|
_InputIterator __last, input_iterator_tag)
|
|
{
|
|
for ( ; __first != __last; ++__first)
|
|
push_back(*__first);
|
|
}
|
|
|
|
// This function is only called by the constructor.
|
|
template <class _ForwardIterator>
|
|
void _M_range_initialize(_ForwardIterator __first,
|
|
_ForwardIterator __last, forward_iterator_tag)
|
|
{
|
|
size_type __n = distance(__first, __last);
|
|
_M_start = _M_allocate(__n);
|
|
_M_end_of_storage = _M_start + __n;
|
|
_M_finish = uninitialized_copy(__first, __last, _M_start);
|
|
}
|
|
|
|
template <class _InputIterator>
|
|
void _M_range_insert(iterator __pos,
|
|
_InputIterator __first, _InputIterator __last,
|
|
input_iterator_tag);
|
|
|
|
template <class _ForwardIterator>
|
|
void _M_range_insert(iterator __pos,
|
|
_ForwardIterator __first, _ForwardIterator __last,
|
|
forward_iterator_tag);
|
|
};
|
|
|
|
|
|
/**
|
|
* @brief Vector equality comparison.
|
|
* @param x A %vector.
|
|
* @param y A %vector of the same type as @a x.
|
|
* @return True iff the size and elements of the vectors are equal.
|
|
*
|
|
* This is an equivalence relation. It is linear in the size of the
|
|
* vectors. Vectors are considered equivalent if their sizes are equal,
|
|
* and if corresponding elements compare equal.
|
|
*/
|
|
template <class _Tp, class _Alloc>
|
|
inline bool
|
|
operator==(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y)
|
|
{
|
|
return __x.size() == __y.size() &&
|
|
equal(__x.begin(), __x.end(), __y.begin());
|
|
}
|
|
|
|
/**
|
|
* @brief Vector ordering relation.
|
|
* @param x A %vector.
|
|
* @param y A %vector of the same type as @a x.
|
|
* @return True iff @a x is lexographically less than @a y.
|
|
*
|
|
* This is a total ordering relation. It is linear in the size of the
|
|
* vectors. The elements must be comparable with @c <.
|
|
*
|
|
* See std::lexographical_compare() for how the determination is made.
|
|
*/
|
|
template <class _Tp, class _Alloc>
|
|
inline bool
|
|
operator<(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y)
|
|
{
|
|
return lexicographical_compare(__x.begin(), __x.end(),
|
|
__y.begin(), __y.end());
|
|
}
|
|
|
|
/// See std::vector::swap().
|
|
template <class _Tp, class _Alloc>
|
|
inline void swap(vector<_Tp, _Alloc>& __x, vector<_Tp, _Alloc>& __y)
|
|
{
|
|
__x.swap(__y);
|
|
}
|
|
|
|
/// Based on operator==
|
|
template <class _Tp, class _Alloc>
|
|
inline bool
|
|
operator!=(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y) {
|
|
return !(__x == __y);
|
|
}
|
|
|
|
/// Based on operator<
|
|
template <class _Tp, class _Alloc>
|
|
inline bool
|
|
operator>(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y) {
|
|
return __y < __x;
|
|
}
|
|
|
|
/// Based on operator<
|
|
template <class _Tp, class _Alloc>
|
|
inline bool
|
|
operator<=(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y) {
|
|
return !(__y < __x);
|
|
}
|
|
|
|
/// Based on operator<
|
|
template <class _Tp, class _Alloc>
|
|
inline bool
|
|
operator>=(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y) {
|
|
return !(__x < __y);
|
|
}
|
|
|
|
// XXX begin tcc me
|
|
template <class _Tp, class _Alloc>
|
|
vector<_Tp,_Alloc>&
|
|
vector<_Tp,_Alloc>::operator=(const vector<_Tp, _Alloc>& __x)
|
|
{
|
|
if (&__x != this) {
|
|
const size_type __xlen = __x.size();
|
|
if (__xlen > capacity()) {
|
|
pointer __tmp = _M_allocate_and_copy(__xlen, __x.begin(), __x.end());
|
|
_Destroy(_M_start, _M_finish);
|
|
_M_deallocate(_M_start, _M_end_of_storage - _M_start);
|
|
_M_start = __tmp;
|
|
_M_end_of_storage = _M_start + __xlen;
|
|
}
|
|
else if (size() >= __xlen) {
|
|
iterator __i(copy(__x.begin(), __x.end(), begin()));
|
|
_Destroy(__i, end());
|
|
}
|
|
else {
|
|
copy(__x.begin(), __x.begin() + size(), _M_start);
|
|
uninitialized_copy(__x.begin() + size(), __x.end(), _M_finish);
|
|
}
|
|
_M_finish = _M_start + __xlen;
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
template <class _Tp, class _Alloc>
|
|
void vector<_Tp, _Alloc>::_M_fill_assign(size_t __n, const value_type& __val)
|
|
{
|
|
if (__n > capacity()) {
|
|
vector<_Tp, _Alloc> __tmp(__n, __val, get_allocator());
|
|
__tmp.swap(*this);
|
|
}
|
|
else if (__n > size()) {
|
|
fill(begin(), end(), __val);
|
|
_M_finish = uninitialized_fill_n(_M_finish, __n - size(), __val);
|
|
}
|
|
else
|
|
erase(fill_n(begin(), __n, __val), end());
|
|
}
|
|
|
|
template <class _Tp, class _Alloc> template <class _InputIter>
|
|
void vector<_Tp, _Alloc>::_M_assign_aux(_InputIter __first, _InputIter __last,
|
|
input_iterator_tag) {
|
|
iterator __cur(begin());
|
|
for ( ; __first != __last && __cur != end(); ++__cur, ++__first)
|
|
*__cur = *__first;
|
|
if (__first == __last)
|
|
erase(__cur, end());
|
|
else
|
|
insert(end(), __first, __last);
|
|
}
|
|
|
|
template <class _Tp, class _Alloc> template <class _ForwardIter>
|
|
void
|
|
vector<_Tp, _Alloc>::_M_assign_aux(_ForwardIter __first, _ForwardIter __last,
|
|
forward_iterator_tag) {
|
|
size_type __len = distance(__first, __last);
|
|
|
|
if (__len > capacity()) {
|
|
pointer __tmp(_M_allocate_and_copy(__len, __first, __last));
|
|
_Destroy(_M_start, _M_finish);
|
|
_M_deallocate(_M_start, _M_end_of_storage - _M_start);
|
|
_M_start = __tmp;
|
|
_M_end_of_storage = _M_finish = _M_start + __len;
|
|
}
|
|
else if (size() >= __len) {
|
|
iterator __new_finish(copy(__first, __last, _M_start));
|
|
_Destroy(__new_finish, end());
|
|
_M_finish = __new_finish.base();
|
|
}
|
|
else {
|
|
_ForwardIter __mid = __first;
|
|
advance(__mid, size());
|
|
copy(__first, __mid, _M_start);
|
|
_M_finish = uninitialized_copy(__mid, __last, _M_finish);
|
|
}
|
|
}
|
|
|
|
template <class _Tp, class _Alloc>
|
|
void
|
|
vector<_Tp, _Alloc>::_M_insert_aux(iterator __position, const _Tp& __x)
|
|
{
|
|
if (_M_finish != _M_end_of_storage) {
|
|
_Construct(_M_finish, *(_M_finish - 1));
|
|
++_M_finish;
|
|
_Tp __x_copy = __x;
|
|
copy_backward(__position, iterator(_M_finish - 2), iterator(_M_finish- 1));
|
|
*__position = __x_copy;
|
|
}
|
|
else {
|
|
const size_type __old_size = size();
|
|
const size_type __len = __old_size != 0 ? 2 * __old_size : 1;
|
|
iterator __new_start(_M_allocate(__len));
|
|
iterator __new_finish(__new_start);
|
|
try {
|
|
__new_finish = uninitialized_copy(iterator(_M_start), __position,
|
|
__new_start);
|
|
_Construct(__new_finish.base(), __x);
|
|
++__new_finish;
|
|
__new_finish = uninitialized_copy(__position, iterator(_M_finish),
|
|
__new_finish);
|
|
}
|
|
catch(...)
|
|
{
|
|
_Destroy(__new_start,__new_finish);
|
|
_M_deallocate(__new_start.base(),__len);
|
|
__throw_exception_again;
|
|
}
|
|
_Destroy(begin(), end());
|
|
_M_deallocate(_M_start, _M_end_of_storage - _M_start);
|
|
_M_start = __new_start.base();
|
|
_M_finish = __new_finish.base();
|
|
_M_end_of_storage = __new_start.base() + __len;
|
|
}
|
|
}
|
|
|
|
#ifdef _GLIBCPP_DEPRECATED
|
|
template <class _Tp, class _Alloc>
|
|
void
|
|
vector<_Tp, _Alloc>::_M_insert_aux(iterator __position)
|
|
{
|
|
if (_M_finish != _M_end_of_storage) {
|
|
_Construct(_M_finish, *(_M_finish - 1));
|
|
++_M_finish;
|
|
copy_backward(__position, iterator(_M_finish - 2),
|
|
iterator(_M_finish - 1));
|
|
*__position = _Tp();
|
|
}
|
|
else {
|
|
const size_type __old_size = size();
|
|
const size_type __len = __old_size != 0 ? 2 * __old_size : 1;
|
|
pointer __new_start = _M_allocate(__len);
|
|
pointer __new_finish = __new_start;
|
|
try {
|
|
__new_finish = uninitialized_copy(iterator(_M_start), __position,
|
|
__new_start);
|
|
_Construct(__new_finish);
|
|
++__new_finish;
|
|
__new_finish = uninitialized_copy(__position, iterator(_M_finish),
|
|
__new_finish);
|
|
}
|
|
catch(...)
|
|
{
|
|
_Destroy(__new_start,__new_finish);
|
|
_M_deallocate(__new_start,__len);
|
|
__throw_exception_again;
|
|
}
|
|
_Destroy(begin(), end());
|
|
_M_deallocate(_M_start, _M_end_of_storage - _M_start);
|
|
_M_start = __new_start;
|
|
_M_finish = __new_finish;
|
|
_M_end_of_storage = __new_start + __len;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
template <class _Tp, class _Alloc>
|
|
void vector<_Tp, _Alloc>::_M_fill_insert(iterator __position, size_type __n,
|
|
const _Tp& __x)
|
|
{
|
|
if (__n != 0) {
|
|
if (size_type(_M_end_of_storage - _M_finish) >= __n) {
|
|
_Tp __x_copy = __x;
|
|
const size_type __elems_after = end() - __position;
|
|
iterator __old_finish(_M_finish);
|
|
if (__elems_after > __n) {
|
|
uninitialized_copy(_M_finish - __n, _M_finish, _M_finish);
|
|
_M_finish += __n;
|
|
copy_backward(__position, __old_finish - __n, __old_finish);
|
|
fill(__position, __position + __n, __x_copy);
|
|
}
|
|
else {
|
|
uninitialized_fill_n(_M_finish, __n - __elems_after, __x_copy);
|
|
_M_finish += __n - __elems_after;
|
|
uninitialized_copy(__position, __old_finish, _M_finish);
|
|
_M_finish += __elems_after;
|
|
fill(__position, __old_finish, __x_copy);
|
|
}
|
|
}
|
|
else {
|
|
const size_type __old_size = size();
|
|
const size_type __len = __old_size + max(__old_size, __n);
|
|
iterator __new_start(_M_allocate(__len));
|
|
iterator __new_finish(__new_start);
|
|
try {
|
|
__new_finish = uninitialized_copy(begin(), __position, __new_start);
|
|
__new_finish = uninitialized_fill_n(__new_finish, __n, __x);
|
|
__new_finish
|
|
= uninitialized_copy(__position, end(), __new_finish);
|
|
}
|
|
catch(...)
|
|
{
|
|
_Destroy(__new_start,__new_finish);
|
|
_M_deallocate(__new_start.base(),__len);
|
|
__throw_exception_again;
|
|
}
|
|
_Destroy(_M_start, _M_finish);
|
|
_M_deallocate(_M_start, _M_end_of_storage - _M_start);
|
|
_M_start = __new_start.base();
|
|
_M_finish = __new_finish.base();
|
|
_M_end_of_storage = __new_start.base() + __len;
|
|
}
|
|
}
|
|
}
|
|
|
|
template <class _Tp, class _Alloc> template <class _InputIterator>
|
|
void
|
|
vector<_Tp, _Alloc>::_M_range_insert(iterator __pos,
|
|
_InputIterator __first,
|
|
_InputIterator __last,
|
|
input_iterator_tag)
|
|
{
|
|
for ( ; __first != __last; ++__first) {
|
|
__pos = insert(__pos, *__first);
|
|
++__pos;
|
|
}
|
|
}
|
|
|
|
template <class _Tp, class _Alloc> template <class _ForwardIterator>
|
|
void
|
|
vector<_Tp, _Alloc>::_M_range_insert(iterator __position,
|
|
_ForwardIterator __first,
|
|
_ForwardIterator __last,
|
|
forward_iterator_tag)
|
|
{
|
|
if (__first != __last) {
|
|
size_type __n = distance(__first, __last);
|
|
if (size_type(_M_end_of_storage - _M_finish) >= __n) {
|
|
const size_type __elems_after = end() - __position;
|
|
iterator __old_finish(_M_finish);
|
|
if (__elems_after > __n) {
|
|
uninitialized_copy(_M_finish - __n, _M_finish, _M_finish);
|
|
_M_finish += __n;
|
|
copy_backward(__position, __old_finish - __n, __old_finish);
|
|
copy(__first, __last, __position);
|
|
}
|
|
else {
|
|
_ForwardIterator __mid = __first;
|
|
advance(__mid, __elems_after);
|
|
uninitialized_copy(__mid, __last, _M_finish);
|
|
_M_finish += __n - __elems_after;
|
|
uninitialized_copy(__position, __old_finish, _M_finish);
|
|
_M_finish += __elems_after;
|
|
copy(__first, __mid, __position);
|
|
}
|
|
}
|
|
else {
|
|
const size_type __old_size = size();
|
|
const size_type __len = __old_size + max(__old_size, __n);
|
|
iterator __new_start(_M_allocate(__len));
|
|
iterator __new_finish(__new_start);
|
|
try {
|
|
__new_finish = uninitialized_copy(iterator(_M_start),
|
|
__position, __new_start);
|
|
__new_finish = uninitialized_copy(__first, __last, __new_finish);
|
|
__new_finish
|
|
= uninitialized_copy(__position, iterator(_M_finish), __new_finish);
|
|
}
|
|
catch(...)
|
|
{
|
|
_Destroy(__new_start,__new_finish);
|
|
_M_deallocate(__new_start.base(), __len);
|
|
__throw_exception_again;
|
|
}
|
|
_Destroy(_M_start, _M_finish);
|
|
_M_deallocate(_M_start, _M_end_of_storage - _M_start);
|
|
_M_start = __new_start.base();
|
|
_M_finish = __new_finish.base();
|
|
_M_end_of_storage = __new_start.base() + __len;
|
|
}
|
|
}
|
|
}
|
|
|
|
} // namespace std
|
|
|
|
#endif /* __GLIBCPP_INTERNAL_VECTOR_H */
|
|
|