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// Debugging deque implementation -*- C++ -*-

// Copyright (C) 2003-2015 Free Software Foundation, Inc.

//

// This file is part of the GNU ISO C++ Library.  This library is free

// software; you can redistribute it and/or modify it under the

// terms of the GNU General Public License as published by the

// Free Software Foundation; either version 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/deque

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

 */

#ifndef _GLIBCXX_DEBUG_DEQUE

#define _GLIBCXX_DEBUG_DEQUE 1

#include 

#include 

#include 

#include 

namespace std _GLIBCXX_VISIBILITY(default)

{

namespace __debug

{

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

  template >

    class deque

    : public __gnu_debug::_Safe_container<

	deque<_Tp, _Allocator>, _Allocator,

	__gnu_debug::_Safe_sequence>,

      public _GLIBCXX_STD_C::deque<_Tp, _Allocator>

    {

      typedef  _GLIBCXX_STD_C::deque<_Tp, _Allocator>		_Base;

      typedef __gnu_debug::_Safe_container<

	deque, _Allocator, __gnu_debug::_Safe_sequence>	_Safe;

      typedef typename _Base::const_iterator	_Base_const_iterator;

      typedef typename _Base::iterator		_Base_iterator;

      typedef __gnu_debug::_Equal_to<_Base_const_iterator> _Equal;

    public:

      typedef typename _Base::reference			reference;

      typedef typename _Base::const_reference		const_reference;

      typedef __gnu_debug::_Safe_iterator<_Base_iterator, deque>

							iterator;

      typedef __gnu_debug::_Safe_iterator<_Base_const_iterator, deque>

							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;

      // 23.2.1.1 construct/copy/destroy:

#if __cplusplus < 201103L

      deque()

      : _Base() { }

      deque(const deque& __x)

      : _Base(__x) { }

      ~deque() { }

#else

      deque() = default;

      deque(const deque&) = default;

      deque(deque&&) = default;

      deque(const deque& __d, const _Allocator& __a)

      : _Base(__d, __a) { }

      deque(deque&& __d, const _Allocator& __a)

      : _Safe(std::move(__d)), _Base(std::move(__d), __a) { }

      deque(initializer_list __l,

	    const allocator_type& __a = allocator_type())

      : _Base(__l, __a) { }

      ~deque() = default;

#endif

      explicit

      deque(const _Allocator& __a)

      : _Base(__a) { }

#if __cplusplus >= 201103L

      explicit

      deque(size_type __n, const _Allocator& __a = _Allocator())

      : _Base(__n, __a) { }

      deque(size_type __n, const _Tp& __value,

	    const _Allocator& __a = _Allocator())

      : _Base(__n, __value, __a) { }

#else

      explicit

      deque(size_type __n, const _Tp& __value = _Tp(),

	    const _Allocator& __a = _Allocator())

      : _Base(__n, __value, __a) { }

#endif

#if __cplusplus >= 201103L

      template

	       typename = std::_RequireInputIter<_InputIterator>>

#else

      template

#endif

	deque(_InputIterator __first, _InputIterator __last,

	      const _Allocator& __a = _Allocator())

	: _Base(__gnu_debug::__base(__gnu_debug::__check_valid_range(__first,

								     __last)),

		__gnu_debug::__base(__last), __a)

	{ }

      deque(const _Base& __x)

      : _Base(__x) { }

#if __cplusplus < 201103L

      deque&

      operator=(const deque& __x)

      {

	this->_M_safe() = __x;

	_M_base() = __x;

	return *this;

      }

#else

      deque&

      operator=(const deque&) = default;

      deque&

      operator=(deque&&) = default;

      deque&

      operator=(initializer_list __l)

      {

	_M_base() = __l;

	this->_M_invalidate_all();

	return *this;

      }

#endif

#if __cplusplus >= 201103L

      template

	       typename = std::_RequireInputIter<_InputIterator>>

#else

      template

#endif

	void

	assign(_InputIterator __first, _InputIterator __last)

	{

	  __glibcxx_check_valid_range(__first, __last);

	  _Base::assign(__gnu_debug::__base(__first),

			__gnu_debug::__base(__last));

	  this->_M_invalidate_all();

	}

      void

      assign(size_type __n, const _Tp& __t)

      {

	_Base::assign(__n, __t);

	this->_M_invalidate_all();

      }

#if __cplusplus >= 201103L

      void

      assign(initializer_list __l)

      {

	_Base::assign(__l);

	this->_M_invalidate_all();

      }

#endif

      using _Base::get_allocator;

      // iterators:

      iterator

      begin() _GLIBCXX_NOEXCEPT

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

      const_iterator

      begin() const _GLIBCXX_NOEXCEPT

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

      iterator

      end() _GLIBCXX_NOEXCEPT

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

      const_iterator

      end() const _GLIBCXX_NOEXCEPT

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

      reverse_iterator

      rbegin() _GLIBCXX_NOEXCEPT

      { return reverse_iterator(end()); }

      const_reverse_iterator

      rbegin() const _GLIBCXX_NOEXCEPT

      { return const_reverse_iterator(end()); }

      reverse_iterator

      rend() _GLIBCXX_NOEXCEPT

      { return reverse_iterator(begin()); }

      const_reverse_iterator

      rend() const _GLIBCXX_NOEXCEPT

      { return const_reverse_iterator(begin()); }

#if __cplusplus >= 201103L

      const_iterator

      cbegin() const noexcept

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

      const_iterator

      cend() const noexcept

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

      const_reverse_iterator

      crbegin() const noexcept

      { return const_reverse_iterator(end()); }

      const_reverse_iterator

      crend() const noexcept

      { return const_reverse_iterator(begin()); }

#endif

    private:

      void

      _M_invalidate_after_nth(difference_type __n)

      {

	typedef __gnu_debug::_After_nth_from<_Base_const_iterator> _After_nth;

	this->_M_invalidate_if(_After_nth(__n, _Base::begin()));

      }

    public:

      // 23.2.1.2 capacity:

      using _Base::size;

      using _Base::max_size;

#if __cplusplus >= 201103L

      void

      resize(size_type __sz)

      {

	bool __invalidate_all = __sz > this->size();

	if (__sz < this->size())

	  this->_M_invalidate_after_nth(__sz);

	_Base::resize(__sz);

	if (__invalidate_all)

	  this->_M_invalidate_all();

      }

      void

      resize(size_type __sz, const _Tp& __c)

      {

	bool __invalidate_all = __sz > this->size();

	if (__sz < this->size())

	  this->_M_invalidate_after_nth(__sz);

	_Base::resize(__sz, __c);

	if (__invalidate_all)

	  this->_M_invalidate_all();

      }

#else

      void

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

      {

	bool __invalidate_all = __sz > this->size();

	if (__sz < this->size())

	  this->_M_invalidate_after_nth(__sz);

	_Base::resize(__sz, __c);

	if (__invalidate_all)

	  this->_M_invalidate_all();

      }

#endif

#if __cplusplus >= 201103L

      void

      shrink_to_fit() noexcept

      {

	if (_Base::_M_shrink_to_fit())

	  this->_M_invalidate_all();

      }

#endif

      using _Base::empty;

      // element access:

      reference

      operator[](size_type __n) _GLIBCXX_NOEXCEPT

      {

	__glibcxx_check_subscript(__n);

	return _M_base()[__n];

      }

      const_reference

      operator[](size_type __n) const _GLIBCXX_NOEXCEPT

      {

	__glibcxx_check_subscript(__n);

	return _M_base()[__n];

      }

      using _Base::at;

      reference

      front() _GLIBCXX_NOEXCEPT

      {

	__glibcxx_check_nonempty();

	return _Base::front();

      }

      const_reference

      front() const _GLIBCXX_NOEXCEPT

      {

	__glibcxx_check_nonempty();

	return _Base::front();

      }

      reference

      back() _GLIBCXX_NOEXCEPT

      {

	__glibcxx_check_nonempty();

	return _Base::back();

      }

      const_reference

      back() const _GLIBCXX_NOEXCEPT

      {

	__glibcxx_check_nonempty();

	return _Base::back();

      }

      // 23.2.1.3 modifiers:

      void

      push_front(const _Tp& __x)

      {

	_Base::push_front(__x);

	this->_M_invalidate_all();

      }

      void

      push_back(const _Tp& __x)

      {

	_Base::push_back(__x);

	this->_M_invalidate_all();

      }

#if __cplusplus >= 201103L

      void

      push_front(_Tp&& __x)

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

      void

      push_back(_Tp&& __x)

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

      template

	void

	emplace_front(_Args&&... __args)

	{

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

	  this->_M_invalidate_all();

	}

      template

	void

	emplace_back(_Args&&... __args)

	{

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

	  this->_M_invalidate_all();

	}

      template

	iterator

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

	{

	  __glibcxx_check_insert(__position);

	  _Base_iterator __res = _Base::emplace(__position.base(),

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

	  this->_M_invalidate_all();

	  return iterator(__res, this);

	}

#endif

      iterator

#if __cplusplus >= 201103L

      insert(const_iterator __position, const _Tp& __x)

#else

      insert(iterator __position, const _Tp& __x)

#endif

      {

	__glibcxx_check_insert(__position);

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

	this->_M_invalidate_all();

	return iterator(__res, this);

      }

#if __cplusplus >= 201103L

      iterator

      insert(const_iterator __position, _Tp&& __x)

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

      iterator

      insert(const_iterator __position, initializer_list __l)

      {

	__glibcxx_check_insert(__position);

	_Base_iterator __res = _Base::insert(__position.base(), __l);

	this->_M_invalidate_all();

	return iterator(__res, this);

      }

#endif

#if __cplusplus >= 201103L

      iterator

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

      {

	__glibcxx_check_insert(__position);

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

	this->_M_invalidate_all();

	return iterator(__res, this);

      }

#else

      void

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

      {

	__glibcxx_check_insert(__position);

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

	this->_M_invalidate_all();

      }

#endif

#if __cplusplus >= 201103L

      template

	       typename = std::_RequireInputIter<_InputIterator>>

	iterator

	insert(const_iterator __position,

	       _InputIterator __first, _InputIterator __last)

	{

	  __glibcxx_check_insert_range(__position, __first, __last);

	  _Base_iterator __res = _Base::insert(__position.base(),

					       __gnu_debug::__base(__first),

					       __gnu_debug::__base(__last));

	  this->_M_invalidate_all();

	  return iterator(__res, this);

	}

#else

      template

	void

	insert(iterator __position,

	       _InputIterator __first, _InputIterator __last)

	{

	  __glibcxx_check_insert_range(__position, __first, __last);

	  _Base::insert(__position.base(), __gnu_debug::__base(__first),

					   __gnu_debug::__base(__last));

	  this->_M_invalidate_all();

	}

#endif

      void

      pop_front() _GLIBCXX_NOEXCEPT

      {

	__glibcxx_check_nonempty();

	this->_M_invalidate_if(_Equal(_Base::begin()));

	_Base::pop_front();

      }

      void

      pop_back() _GLIBCXX_NOEXCEPT

      {

	__glibcxx_check_nonempty();

	this->_M_invalidate_if(_Equal(--_Base::end()));

	_Base::pop_back();

      }

      iterator

#if __cplusplus >= 201103L

      erase(const_iterator __position)

#else

      erase(iterator __position)

#endif

      {

	__glibcxx_check_erase(__position);

#if __cplusplus >= 201103L

	_Base_const_iterator __victim = __position.base();

#else

	_Base_iterator __victim = __position.base();

#endif

	if (__victim == _Base::begin() || __victim == _Base::end() - 1)

	  {

	    this->_M_invalidate_if(_Equal(__victim));

	    return iterator(_Base::erase(__victim), this);

	  }

	else

	  {

	    _Base_iterator __res = _Base::erase(__victim);

	    this->_M_invalidate_all();

	    return iterator(__res, this);

	  }

      }

      iterator

#if __cplusplus >= 201103L

      erase(const_iterator __first, const_iterator __last)

#else

      erase(iterator __first, iterator __last)

#endif

      {

	// _GLIBCXX_RESOLVE_LIB_DEFECTS

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

	__glibcxx_check_erase_range(__first, __last);

	if (__first.base() == __last.base())

#if __cplusplus >= 201103L

	  return iterator(__first.base()._M_const_cast(), this);

#else

	  return __first;

#endif

	else if (__first.base() == _Base::begin()

		 || __last.base() == _Base::end())

	  {

	    this->_M_detach_singular();

	    for (_Base_const_iterator __position = __first.base();

		 __position != __last.base(); ++__position)

	      {

		this->_M_invalidate_if(_Equal(__position));

	      }

	    __try

	      {

		return iterator(_Base::erase(__first.base(), __last.base()),

				this);

	      }

	    __catch(...)

	      {

		this->_M_revalidate_singular();

		__throw_exception_again;

	      }

	  }

	else

	  {

	    _Base_iterator __res = _Base::erase(__first.base(),

						__last.base());

	    this->_M_invalidate_all();

	    return iterator(__res, this);

	  }

      }

      void

      swap(deque& __x)

#if __cplusplus >= 201103L

	noexcept( noexcept(declval<_Base>().swap(__x)) )

#endif

      {

	_Safe::_M_swap(__x);

	_Base::swap(__x);

      }

      void

      clear() _GLIBCXX_NOEXCEPT

      {

	_Base::clear();

	this->_M_invalidate_all();

      }

      _Base&

      _M_base() _GLIBCXX_NOEXCEPT	{ return *this; }

      const _Base&

      _M_base() const _GLIBCXX_NOEXCEPT	{ return *this; }

    };

  template

    inline bool

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

	       const deque<_Tp, _Alloc>& __rhs)

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

  template

    inline bool

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

	       const deque<_Tp, _Alloc>& __rhs)

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

  template

    inline bool

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

	      const deque<_Tp, _Alloc>& __rhs)

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

  template

    inline bool

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

	       const deque<_Tp, _Alloc>& __rhs)

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

  template

    inline bool

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

	       const deque<_Tp, _Alloc>& __rhs)

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

  template

    inline bool

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

	      const deque<_Tp, _Alloc>& __rhs)

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

  template

    inline void

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

    { __lhs.swap(__rhs); }

} // namespace __debug

} // namespace std

#endif