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//usr/include/c++/4.8.5/debug/map.h

// Debugging map implementation -*- C++ -*-

// Copyright (C) 2003-2013 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.

// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
// <http://www.gnu.org/licenses/>.

/** @file debug/map.h
 *  This file is a GNU debug extension to the Standard C++ Library.
 */

#ifndef _GLIBCXX_DEBUG_MAP_H
#define _GLIBCXX_DEBUG_MAP_H 1

#include <debug/safe_sequence.h>
#include <debug/safe_iterator.h>
#include <utility>

namespace std _GLIBCXX_VISIBILITY(default)
{
namespace __debug
{
  /// Class std::map with safety/checking/debug instrumentation.
  template<typename _Key, typename _Tp, typename _Compare = std::less<_Key>,
	   typename _Allocator = std::allocator<std::pair<const _Key, _Tp> > >
    class map
    : public _GLIBCXX_STD_C::map<_Key, _Tp, _Compare, _Allocator>,
      public __gnu_debug::_Safe_sequence<map<_Key, _Tp, _Compare, _Allocator> >
    {
      typedef _GLIBCXX_STD_C::map<_Key, _Tp, _Compare, _Allocator> _Base;

typedef typename _Base::const_iterator _Base_const_iterator;
      typedef typename _Base::iterator _Base_iterator;
      typedef __gnu_debug::_Equal_to<_Base_const_iterator> _Equal;
    public:
      // types:
      typedef _Key                                  key_type;
      typedef _Tp                                   mapped_type;
      typedef std::pair<const _Key, _Tp>            value_type;
      typedef _Compare                              key_compare;
      typedef _Allocator                            allocator_type;
      typedef typename _Base::reference             reference;
      typedef typename _Base::const_reference       const_reference;

typedef __gnu_debug::_Safe_iterator<_Base_iterator, map>
                                                    iterator;
      typedef __gnu_debug::_Safe_iterator<_Base_const_iterator, map>
                                                    const_iterator;

typedef typename _Base::size_type             size_type;
      typedef typename _Base::difference_type       difference_type;
      typedef typename _Base::pointer               pointer;
      typedef typename _Base::const_pointer         const_pointer;
      typedef std::reverse_iterator<iterator>       reverse_iterator;
      typedef std::reverse_iterator<const_iterator> const_reverse_iterator;

// 23.3.1.1 construct/copy/destroy:
      explicit map(const _Compare& __comp = _Compare(),
		   const _Allocator& __a = _Allocator())
      : _Base(__comp, __a) { }

template<typename _InputIterator>
        map(_InputIterator __first, _InputIterator __last,
	    const _Compare& __comp = _Compare(),
	    const _Allocator& __a = _Allocator())
	: _Base(__gnu_debug::__base(__gnu_debug::__check_valid_range(__first,
								     __last)),
		__gnu_debug::__base(__last),
		__comp, __a) { }

map(const map& __x)
      : _Base(__x) { }

map(const _Base& __x)
      : _Base(__x) { }

#if __cplusplus >= 201103L
      map(map&& __x)
      noexcept(is_nothrow_copy_constructible<_Compare>::value)
      : _Base(std::move(__x))
      { this->_M_swap(__x); }

map(initializer_list<value_type> __l,
	  const _Compare& __c = _Compare(),
	  const allocator_type& __a = allocator_type())
      : _Base(__l, __c, __a) { }
#endif

~map() _GLIBCXX_NOEXCEPT { }

map&
      operator=(const map& __x)
      {
	*static_cast<_Base*>(this) = __x;
	this->_M_invalidate_all();
	return *this;
      }

#if __cplusplus >= 201103L
      map&
      operator=(map&& __x)
      {
	// NB: DR 1204.
	// NB: DR 675.
	__glibcxx_check_self_move_assign(__x);
	clear();
	swap(__x);
	return *this;
      }

map&
      operator=(initializer_list<value_type> __l)
      {
	this->clear();
	this->insert(__l);
	return *this;
      }
#endif

// _GLIBCXX_RESOLVE_LIB_DEFECTS
      // 133. map missing get_allocator()
      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

// capacity:
      using _Base::empty;
      using _Base::size;
      using _Base::max_size;

// 23.3.1.2 element access:
      using _Base::operator[];

// _GLIBCXX_RESOLVE_LIB_DEFECTS
      // DR 464. Suggestion for new member functions in standard containers.
      using _Base::at;

// modifiers:
#if __cplusplus >= 201103L
      template<typename... _Args>
	std::pair<iterator, bool>
	emplace(_Args&&... __args)
	{
	  auto __res = _Base::emplace(std::forward<_Args>(__args)...);
	  return std::pair<iterator, bool>(iterator(__res.first, this),
					   __res.second);
	}

template<typename... _Args>
	iterator
	emplace_hint(const_iterator __pos, _Args&&... __args)
	{
	  __glibcxx_check_insert(__pos);
	  return iterator(_Base::emplace_hint(__pos.base(),
					      std::forward<_Args>(__args)...),
			  this);
	}
#endif

std::pair<iterator, bool>
      insert(const value_type& __x)
      {
	std::pair<_Base_iterator, bool> __res = _Base::insert(__x);
	return std::pair<iterator, bool>(iterator(__res.first, this),
					 __res.second);
      }

#if __cplusplus >= 201103L
      template<typename _Pair, typename = typename
	       std::enable_if<std::is_constructible<value_type,
						    _Pair&&>::value>::type>
        std::pair<iterator, bool>
        insert(_Pair&& __x)
        {
	  std::pair<_Base_iterator, bool> __res
	    = _Base::insert(std::forward<_Pair>(__x));
	  return std::pair<iterator, bool>(iterator(__res.first, this),
					   __res.second);
	}
#endif

#if __cplusplus >= 201103L
      void
      insert(std::initializer_list<value_type> __list)
      { _Base::insert(__list); }
#endif

iterator
#if __cplusplus >= 201103L
      insert(const_iterator __position, const value_type& __x)
#else
      insert(iterator __position, const value_type& __x)
#endif
      {
	__glibcxx_check_insert(__position);
	return iterator(_Base::insert(__position.base(), __x), this);
      }

#if __cplusplus >= 201103L
      template<typename _Pair, typename = typename
	       std::enable_if<std::is_constructible<value_type,
						    _Pair&&>::value>::type>
        iterator
        insert(const_iterator __position, _Pair&& __x)
        {
	  __glibcxx_check_insert(__position);
	  return iterator(_Base::insert(__position.base(),
					std::forward<_Pair>(__x)), this);
	}
#endif

template<typename _InputIterator>
        void
        insert(_InputIterator __first, _InputIterator __last)
        {
	  __glibcxx_check_valid_range(__first, __last);
	  _Base::insert(__gnu_debug::__base(__first),
			__gnu_debug::__base(__last));
	}

#if __cplusplus >= 201103L
      iterator
      erase(const_iterator __position)
      {
	__glibcxx_check_erase(__position);
	this->_M_invalidate_if(_Equal(__position.base()));
	return iterator(_Base::erase(__position.base()), this);
      }

iterator
      erase(iterator __position)
      { return erase(const_iterator(__position)); }
#else
      void
      erase(iterator __position)
      {
	__glibcxx_check_erase(__position);
	this->_M_invalidate_if(_Equal(__position.base()));
	_Base::erase(__position.base());
      }
#endif

size_type
      erase(const key_type& __x)
      {
	_Base_iterator __victim = _Base::find(__x);
	if (__victim == _Base::end())
	  return 0;
	else
	  {
	    this->_M_invalidate_if(_Equal(__victim));
	    _Base::erase(__victim);
	    return 1;
	  }
      }

#if __cplusplus >= 201103L
      iterator
      erase(const_iterator __first, const_iterator __last)
      {
	// _GLIBCXX_RESOLVE_LIB_DEFECTS
	// 151. can't currently clear() empty container
	__glibcxx_check_erase_range(__first, __last);
	for (_Base_const_iterator __victim = __first.base();
	     __victim != __last.base(); ++__victim)
	  {
	    _GLIBCXX_DEBUG_VERIFY(__victim != _Base::end(),
				  _M_message(__gnu_debug::__msg_valid_range)
				  ._M_iterator(__first, "first")
				  ._M_iterator(__last, "last"));
	    this->_M_invalidate_if(_Equal(__victim));
	  }
	return iterator(_Base::erase(__first.base(), __last.base()), this);
      }
#else
      void
      erase(iterator __first, iterator __last)
      {
	// _GLIBCXX_RESOLVE_LIB_DEFECTS
	// 151. can't currently clear() empty container
	__glibcxx_check_erase_range(__first, __last);
	for (_Base_iterator __victim = __first.base();
	     __victim != __last.base(); ++__victim)
	  {
	    _GLIBCXX_DEBUG_VERIFY(__victim != _Base::end(),
				  _M_message(__gnu_debug::__msg_valid_range)
				  ._M_iterator(__first, "first")
				  ._M_iterator(__last, "last"));
	    this->_M_invalidate_if(_Equal(__victim));
	  }
	_Base::erase(__first.base(), __last.base());
      }
#endif

void
      swap(map& __x)
      {
	_Base::swap(__x);
	this->_M_swap(__x);
      }

void
      clear() _GLIBCXX_NOEXCEPT
      {
	this->_M_invalidate_all();
	_Base::clear();
      }

// observers:
      using _Base::key_comp;
      using _Base::value_comp;

// 23.3.1.3 map operations:
      iterator
      find(const key_type& __x)
      { return iterator(_Base::find(__x), this); }

const_iterator
      find(const key_type& __x) const
      { return const_iterator(_Base::find(__x), this); }

using _Base::count;

iterator
      lower_bound(const key_type& __x)
      { return iterator(_Base::lower_bound(__x), this); }

const_iterator
      lower_bound(const key_type& __x) const
      { return const_iterator(_Base::lower_bound(__x), this); }

iterator
      upper_bound(const key_type& __x)
      { return iterator(_Base::upper_bound(__x), this); }

const_iterator
      upper_bound(const key_type& __x) const
      { return const_iterator(_Base::upper_bound(__x), this); }

std::pair<iterator,iterator>
      equal_range(const key_type& __x)
      {
	std::pair<_Base_iterator, _Base_iterator> __res =
	_Base::equal_range(__x);
	return std::make_pair(iterator(__res.first, this),
			      iterator(__res.second, this));
      }

std::pair<const_iterator,const_iterator>
      equal_range(const key_type& __x) const
      {
	std::pair<_Base_const_iterator, _Base_const_iterator> __res =
	_Base::equal_range(__x);
	return std::make_pair(const_iterator(__res.first, this),
			      const_iterator(__res.second, this));
      }

_Base&
      _M_base() _GLIBCXX_NOEXCEPT       { return *this; }

const _Base&
      _M_base() const _GLIBCXX_NOEXCEPT { return *this; }

private:
      void
      _M_invalidate_all()
      {
	typedef __gnu_debug::_Not_equal_to<_Base_const_iterator> _Not_equal;
	this->_M_invalidate_if(_Not_equal(_M_base().end()));
      }
    };

template<typename _Key, typename _Tp,
	   typename _Compare, typename _Allocator>
    inline bool
    operator==(const map<_Key, _Tp, _Compare, _Allocator>& __lhs,
	       const map<_Key, _Tp, _Compare, _Allocator>& __rhs)
    { return __lhs._M_base() == __rhs._M_base(); }

template<typename _Key, typename _Tp,
	   typename _Compare, typename _Allocator>
    inline bool
    operator!=(const map<_Key, _Tp, _Compare, _Allocator>& __lhs,
	       const map<_Key, _Tp, _Compare, _Allocator>& __rhs)
    { return __lhs._M_base() != __rhs._M_base(); }

template<typename _Key, typename _Tp,
	   typename _Compare, typename _Allocator>
    inline bool
    operator<(const map<_Key, _Tp, _Compare, _Allocator>& __lhs,
	      const map<_Key, _Tp, _Compare, _Allocator>& __rhs)
    { return __lhs._M_base() < __rhs._M_base(); }

template<typename _Key, typename _Tp,
	   typename _Compare, typename _Allocator>
    inline bool
    operator<=(const map<_Key, _Tp, _Compare, _Allocator>& __lhs,
	       const map<_Key, _Tp, _Compare, _Allocator>& __rhs)
    { return __lhs._M_base() <= __rhs._M_base(); }

template<typename _Key, typename _Tp,
	   typename _Compare, typename _Allocator>
    inline bool
    operator>=(const map<_Key, _Tp, _Compare, _Allocator>& __lhs,
	       const map<_Key, _Tp, _Compare, _Allocator>& __rhs)
    { return __lhs._M_base() >= __rhs._M_base(); }

template<typename _Key, typename _Tp,
	   typename _Compare, typename _Allocator>
    inline bool
    operator>(const map<_Key, _Tp, _Compare, _Allocator>& __lhs,
	      const map<_Key, _Tp, _Compare, _Allocator>& __rhs)
    { return __lhs._M_base() > __rhs._M_base(); }

template<typename _Key, typename _Tp,
	   typename _Compare, typename _Allocator>
    inline void
    swap(map<_Key, _Tp, _Compare, _Allocator>& __lhs,
	 map<_Key, _Tp, _Compare, _Allocator>& __rhs)
    { __lhs.swap(__rhs); }

} // namespace __debug
} // namespace std

#endif