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// Debugging vector implementation -*- C++ -*-

// Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010

// 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

// .

/** @file debug/vector

 *  This file is a GNU debug extension to the Standard C++ Library.

 */

#ifndef _GLIBCXX_DEBUG_VECTOR

#define _GLIBCXX_DEBUG_VECTOR 1

#include 

#include 

#include 

#include 

namespace std

{

namespace __debug

{

  /// Class std::vector with safety/checking/debug instrumentation.

  template

           typename _Allocator = std::allocator<_Tp> >

    class vector

    : public _GLIBCXX_STD_D::vector<_Tp, _Allocator>,

      public __gnu_debug::_Safe_sequence >

    {

      typedef _GLIBCXX_STD_D::vector<_Tp, _Allocator> _Base;

      typedef __gnu_debug::_Safe_sequence              _Safe_base;

      typedef typename _Base::const_iterator _Base_const_iterator;

      typedef __gnu_debug::_After_nth_from<_Base_const_iterator> _After_nth;

    public:

      typedef typename _Base::reference             reference;

      typedef typename _Base::const_reference       const_reference;

      typedef __gnu_debug::_Safe_iterator

      iterator;

      typedef __gnu_debug::_Safe_iterator

      const_iterator;

      typedef typename _Base::size_type             size_type;

      typedef typename _Base::difference_type       difference_type;

      typedef _Tp                                   value_type;

      typedef _Allocator                            allocator_type;

      typedef typename _Base::pointer               pointer;

      typedef typename _Base::const_pointer         const_pointer;

      typedef std::reverse_iterator       reverse_iterator;

      typedef std::reverse_iterator const_reverse_iterator;

      // 23.2.4.1 construct/copy/destroy:

      explicit vector(const _Allocator& __a = _Allocator())

      : _Base(__a), _M_guaranteed_capacity(0) { }

      explicit vector(size_type __n, const _Tp& __value = _Tp(),

                      const _Allocator& __a = _Allocator())

      : _Base(__n, __value, __a), _M_guaranteed_capacity(__n) { }

      template

        vector(_InputIterator __first, _InputIterator __last,

               const _Allocator& __a = _Allocator())

        : _Base(__gnu_debug::__check_valid_range(__first, __last),

                __last, __a),

          _M_guaranteed_capacity(0)

        { _M_update_guaranteed_capacity(); }

      vector(const vector& __x)

      : _Base(__x), _Safe_base(), _M_guaranteed_capacity(__x.size()) { }

      /// Construction from a release-mode vector

      vector(const _Base& __x)

      : _Base(__x), _Safe_base(), _M_guaranteed_capacity(__x.size()) { }

#ifdef __GXX_EXPERIMENTAL_CXX0X__

      vector(vector&& __x)

      : _Base(std::forward(__x)), _Safe_base(),

        _M_guaranteed_capacity(this->size())

      {

        this->_M_swap(__x);

        __x._M_guaranteed_capacity = 0;

      }

      vector(initializer_list __l,

             const allocator_type& __a = allocator_type())

      : _Base(__l, __a), _Safe_base(),

        _M_guaranteed_capacity(__l.size()) { }

#endif

      ~vector() { }

      vector&

      operator=(const vector& __x)

      {

        static_cast<_Base&>(*this) = __x;

        this->_M_invalidate_all();

        _M_update_guaranteed_capacity();

        return *this;

      }

#ifdef __GXX_EXPERIMENTAL_CXX0X__

      vector&

      operator=(vector&& __x)

      {

        // NB: DR 1204.

        // NB: DR 675.

        clear();

        swap(__x);

        return *this;

      }

      vector&

      operator=(initializer_list __l)

      {

        static_cast<_Base&>(*this) = __l;

        this->_M_invalidate_all();

        _M_update_guaranteed_capacity();

        return *this;

      }

#endif

      template

        void

        assign(_InputIterator __first, _InputIterator __last)

        {

          __glibcxx_check_valid_range(__first, __last);

          _Base::assign(__first, __last);

          this->_M_invalidate_all();

          _M_update_guaranteed_capacity();

        }

      void

      assign(size_type __n, const _Tp& __u)

      {

        _Base::assign(__n, __u);

        this->_M_invalidate_all();

        _M_update_guaranteed_capacity();

      }

#ifdef __GXX_EXPERIMENTAL_CXX0X__

      void

      assign(initializer_list __l)

      {

        _Base::assign(__l);

        this->_M_invalidate_all();

        _M_update_guaranteed_capacity();

      }

#endif

      using _Base::get_allocator;

      // iterators:

      iterator

      begin()

      { return iterator(_Base::begin(), this); }

      const_iterator

      begin() const

      { return const_iterator(_Base::begin(), this); }

      iterator

      end()

      { return iterator(_Base::end(), this); }

      const_iterator

      end() const

      { return const_iterator(_Base::end(), this); }

      reverse_iterator

      rbegin()

      { return reverse_iterator(end()); }

      const_reverse_iterator

      rbegin() const

      { return const_reverse_iterator(end()); }

      reverse_iterator

      rend()

      { return reverse_iterator(begin()); }

      const_reverse_iterator

      rend() const

      { return const_reverse_iterator(begin()); }

#ifdef __GXX_EXPERIMENTAL_CXX0X__

      const_iterator

      cbegin() const

      { return const_iterator(_Base::begin(), this); }

      const_iterator

      cend() const

      { return const_iterator(_Base::end(), this); }

      const_reverse_iterator

      crbegin() const

      { return const_reverse_iterator(end()); }

      const_reverse_iterator

      crend() const

      { return const_reverse_iterator(begin()); }

#endif

      // 23.2.4.2 capacity:

      using _Base::size;

      using _Base::max_size;

      void

      resize(size_type __sz, _Tp __c = _Tp())

      {

        bool __realloc = _M_requires_reallocation(__sz);

        if (__sz < this->size())

          this->_M_invalidate_if(_After_nth(__sz, _M_base().begin()));

        _Base::resize(__sz, __c);

        if (__realloc)

          this->_M_invalidate_all();

        _M_update_guaranteed_capacity();

      }

#ifdef __GXX_EXPERIMENTAL_CXX0X__

      using _Base::shrink_to_fit;

#endif

      size_type

      capacity() const

      {

#ifdef _GLIBCXX_DEBUG_PEDANTIC

        return _M_guaranteed_capacity;

#else

        return _Base::capacity();

#endif

      }

      using _Base::empty;

      void

      reserve(size_type __n)

      {

        bool __realloc = _M_requires_reallocation(__n);

        _Base::reserve(__n);

        if (__n > _M_guaranteed_capacity)

          _M_guaranteed_capacity = __n;

        if (__realloc)

          this->_M_invalidate_all();

      }

      // element access:

      reference

      operator[](size_type __n)

      {

        __glibcxx_check_subscript(__n);

        return _M_base()[__n];

      }

      const_reference

      operator[](size_type __n) const

      {

        __glibcxx_check_subscript(__n);

        return _M_base()[__n];

      }

      using _Base::at;

      reference

      front()

      {

        __glibcxx_check_nonempty();

        return _Base::front();

      }

      const_reference

      front() const

      {

        __glibcxx_check_nonempty();

        return _Base::front();

      }

      reference

      back()

      {

        __glibcxx_check_nonempty();

        return _Base::back();

      }

      const_reference

      back() const

      {

        __glibcxx_check_nonempty();

        return _Base::back();

      }

      // _GLIBCXX_RESOLVE_LIB_DEFECTS

      // DR 464. Suggestion for new member functions in standard containers.

      using _Base::data;

      // 23.2.4.3 modifiers:

      void

      push_back(const _Tp& __x)

      {

        bool __realloc = _M_requires_reallocation(this->size() + 1);

        _Base::push_back(__x);

        if (__realloc)

          this->_M_invalidate_all();

        _M_update_guaranteed_capacity();

      }

#ifdef __GXX_EXPERIMENTAL_CXX0X__

      template

        typename __gnu_cxx::__enable_if::__value,

                                        void>::__type

        push_back(_Tp&& __x)

        { emplace_back(std::move(__x)); }

      template

        void

        emplace_back(_Args&&... __args)

        {

          bool __realloc = _M_requires_reallocation(this->size() + 1);

          _Base::emplace_back(std::forward<_Args>(__args)...);

          if (__realloc)

            this->_M_invalidate_all();

          _M_update_guaranteed_capacity();

        }

#endif

      void

      pop_back()

      {

        __glibcxx_check_nonempty();

        iterator __victim = end() - 1;

        __victim._M_invalidate();

        _Base::pop_back();

      }

#ifdef __GXX_EXPERIMENTAL_CXX0X__

      template

        iterator

        emplace(iterator __position, _Args&&... __args)

        {

          __glibcxx_check_insert(__position);

          bool __realloc = _M_requires_reallocation(this->size() + 1);

          difference_type __offset = __position - begin();

          typename _Base::iterator __res = _Base::emplace(__position.base(),

                                            std::forward<_Args>(__args)...);

          if (__realloc)

            this->_M_invalidate_all();

          else

            this->_M_invalidate_if(_After_nth(__offset, _M_base().begin()));

          _M_update_guaranteed_capacity();

          return iterator(__res, this);

        }

#endif

      iterator

      insert(iterator __position, const _Tp& __x)

      {

        __glibcxx_check_insert(__position);

        bool __realloc = _M_requires_reallocation(this->size() + 1);

        difference_type __offset = __position - begin();

        typename _Base::iterator __res = _Base::insert(__position.base(),__x);

        if (__realloc)

          this->_M_invalidate_all();

        else

          this->_M_invalidate_if(_After_nth(__offset, _M_base().begin()));

        _M_update_guaranteed_capacity();

        return iterator(__res, this);

      }

#ifdef __GXX_EXPERIMENTAL_CXX0X__

      template

        typename __gnu_cxx::__enable_if::__value,

                                        iterator>::__type

        insert(iterator __position, _Tp&& __x)

        { return emplace(__position, std::move(__x)); }

      void

      insert(iterator __position, initializer_list __l)

      { this->insert(__position, __l.begin(), __l.end()); }

#endif

      void

      insert(iterator __position, size_type __n, const _Tp& __x)

      {

        __glibcxx_check_insert(__position);

        bool __realloc = _M_requires_reallocation(this->size() + __n);

        difference_type __offset = __position - begin();

        _Base::insert(__position.base(), __n, __x);

        if (__realloc)

          this->_M_invalidate_all();

        else

          this->_M_invalidate_if(_After_nth(__offset, _M_base().begin()));

        _M_update_guaranteed_capacity();

      }

      template

        void

        insert(iterator __position,

               _InputIterator __first, _InputIterator __last)

        {

          __glibcxx_check_insert_range(__position, __first, __last);

          /* Hard to guess if invalidation will occur, because __last

             - __first can't be calculated in all cases, so we just

             punt here by checking if it did occur. */

          typename _Base::iterator __old_begin = _M_base().begin();

          difference_type __offset = __position - begin();

          _Base::insert(__position.base(), __first, __last);

          if (_M_base().begin() != __old_begin)

            this->_M_invalidate_all();

          else

            this->_M_invalidate_if(_After_nth(__offset, _M_base().begin()));

          _M_update_guaranteed_capacity();

        }

      iterator

      erase(iterator __position)

      {

        __glibcxx_check_erase(__position);

        difference_type __offset = __position - begin();

        typename _Base::iterator __res = _Base::erase(__position.base());

        this->_M_invalidate_if(_After_nth(__offset, _M_base().begin()));

        return iterator(__res, this);

      }

      iterator

      erase(iterator __first, iterator __last)

      {

        // _GLIBCXX_RESOLVE_LIB_DEFECTS

        // 151. can't currently clear() empty container

        __glibcxx_check_erase_range(__first, __last);

        difference_type __offset = __first - begin();

        typename _Base::iterator __res = _Base::erase(__first.base(),

                                                         __last.base());

        this->_M_invalidate_if(_After_nth(__offset, _M_base().begin()));

        return iterator(__res, this);

      }

      void

      swap(vector& __x)

      {

        _Base::swap(__x);

        this->_M_swap(__x);

        std::swap(_M_guaranteed_capacity, __x._M_guaranteed_capacity);

      }

      void

      clear()

      {

        _Base::clear();

        this->_M_invalidate_all();

        _M_guaranteed_capacity = 0;

      }

      _Base&

      _M_base() { return *this; }

      const _Base&

      _M_base() const { return *this; }

    private:

      size_type _M_guaranteed_capacity;

      bool

      _M_requires_reallocation(size_type __elements)

      { return __elements > this->capacity(); }

      void

      _M_update_guaranteed_capacity()

      {

        if (this->size() > _M_guaranteed_capacity)

          _M_guaranteed_capacity = this->size();

      }

    };

  template

    inline bool

    operator==(const vector<_Tp, _Alloc>& __lhs,

               const vector<_Tp, _Alloc>& __rhs)

    { return __lhs._M_base() == __rhs._M_base(); }

  template

    inline bool

    operator!=(const vector<_Tp, _Alloc>& __lhs,

               const vector<_Tp, _Alloc>& __rhs)

    { return __lhs._M_base() != __rhs._M_base(); }

  template

    inline bool

    operator<(const vector<_Tp, _Alloc>& __lhs,

              const vector<_Tp, _Alloc>& __rhs)

    { return __lhs._M_base() < __rhs._M_base(); }

  template

    inline bool

    operator<=(const vector<_Tp, _Alloc>& __lhs,

               const vector<_Tp, _Alloc>& __rhs)

    { return __lhs._M_base() <= __rhs._M_base(); }

  template

    inline bool

    operator>=(const vector<_Tp, _Alloc>& __lhs,

               const vector<_Tp, _Alloc>& __rhs)

    { return __lhs._M_base() >= __rhs._M_base(); }

  template

    inline bool

    operator>(const vector<_Tp, _Alloc>& __lhs,

              const vector<_Tp, _Alloc>& __rhs)

    { return __lhs._M_base() > __rhs._M_base(); }

  template

    inline void

    swap(vector<_Tp, _Alloc>& __lhs, vector<_Tp, _Alloc>& __rhs)

    { __lhs.swap(__rhs); }

} // namespace __debug

#ifdef __GXX_EXPERIMENTAL_CXX0X__

  // DR 1182.

  /// std::hash specialization for vector.

  template

    struct hash<__debug::vector>

    : public std::unary_function<__debug::vector, size_t>

    {

      size_t

      operator()(const __debug::vector& __b) const

      { return std::hash<_GLIBCXX_STD_D::vector>()

          (__b._M_base()); }

    };

#endif

} // namespace std

#endif