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// Debugging set 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

// .

/** @file debug/set.h

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

 */

#ifndef _GLIBCXX_DEBUG_SET_H

#define _GLIBCXX_DEBUG_SET_H 1

#include 

#include 

#include 

namespace std _GLIBCXX_VISIBILITY(default)

{

namespace __debug

{

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

  template,

	   typename _Allocator = std::allocator<_Key> >

    class set

    : public _GLIBCXX_STD_C::set<_Key,_Compare,_Allocator>,

      public __gnu_debug::_Safe_sequence >

    {

      typedef _GLIBCXX_STD_C::set<_Key, _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 _Key				    value_type;

      typedef _Compare				    key_compare;

      typedef _Compare				    value_compare;

      typedef _Allocator			    allocator_type;

      typedef typename _Base::reference             reference;

      typedef typename _Base::const_reference       const_reference;

      typedef __gnu_debug::_Safe_iterator<_Base_iterator, set>

                                                    iterator;

      typedef __gnu_debug::_Safe_iterator<_Base_const_iterator, set>

                                                    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       reverse_iterator;

      typedef std::reverse_iterator const_reverse_iterator;

      // 23.3.3.1 construct/copy/destroy:

      explicit set(const _Compare& __comp = _Compare(),

		   const _Allocator& __a = _Allocator())

      : _Base(__comp, __a) { }

      template

        set(_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) { }

      set(const set& __x)

      : _Base(__x) { }

      set(const _Base& __x)

      : _Base(__x) { }

#if __cplusplus >= 201103L

      set(set&& __x)

      noexcept(is_nothrow_copy_constructible<_Compare>::value)

      : _Base(std::move(__x))

      { this->_M_swap(__x); }

      set(initializer_list __l,

	  const _Compare& __comp = _Compare(),

	  const allocator_type& __a = allocator_type())

      : _Base(__l, __comp, __a) { }

#endif

      ~set() _GLIBCXX_NOEXCEPT { }

      set&

      operator=(const set& __x)

      {

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

	this->_M_invalidate_all();

	return *this;

      }

#if __cplusplus >= 201103L

      set&

      operator=(set&& __x)

      {

	// NB: DR 1204.

	// NB: DR 675.

	__glibcxx_check_self_move_assign(__x);

	clear();

	swap(__x);

	return *this;

      }

      set&

      operator=(initializer_list __l)

      {

	this->clear();

	this->insert(__l);

	return *this;

      }

#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

      // capacity:

      using _Base::empty;

      using _Base::size;

      using _Base::max_size;

      // modifiers:

#if __cplusplus >= 201103L

      template

	std::pair

	emplace(_Args&&... __args)

	{

	  auto __res = _Base::emplace(std::forward<_Args>(__args)...);

	  return std::pair(iterator(__res.first, this),

					   __res.second);

	}

      template

	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

      insert(const value_type& __x)

      {

	std::pair<_Base_iterator, bool> __res = _Base::insert(__x);

	return std::pair(iterator(__res.first, this),

					 __res.second);

      }

#if __cplusplus >= 201103L

      std::pair

      insert(value_type&& __x)

      {

	std::pair<_Base_iterator, bool> __res

	  = _Base::insert(std::move(__x));

	return std::pair(iterator(__res.first, this),

					 __res.second);

      }

#endif

      iterator

      insert(const_iterator __position, const value_type& __x)

      {

	__glibcxx_check_insert(__position);

	return iterator(_Base::insert(__position.base(), __x), this);

      }

#if __cplusplus >= 201103L

      iterator

      insert(const_iterator __position, value_type&& __x)

      {

	__glibcxx_check_insert(__position);

	return iterator(_Base::insert(__position.base(), std::move(__x)),

			this);

      }

#endif

      template 

        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

      void

      insert(initializer_list __l)

      { _Base::insert(__l); }

#endif

#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);

      }

#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(set& __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;

      // set operations:

      iterator

      find(const key_type& __x)

      { return iterator(_Base::find(__x), this); }

      // _GLIBCXX_RESOLVE_LIB_DEFECTS

      // 214. set::find() missing const overload

      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); }

      // _GLIBCXX_RESOLVE_LIB_DEFECTS

      // 214. set::find() missing const overload

      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); }

      // _GLIBCXX_RESOLVE_LIB_DEFECTS

      // 214. set::find() missing const overload

      const_iterator

      upper_bound(const key_type& __x) const

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

      std::pair

      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));

      }

      // _GLIBCXX_RESOLVE_LIB_DEFECTS

      // 214. set::find() missing const overload

      std::pair

      equal_range(const key_type& __x) const

      {

	std::pair<_Base_iterator, _Base_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

    inline bool

    operator==(const set<_Key, _Compare, _Allocator>& __lhs,

	       const set<_Key, _Compare, _Allocator>& __rhs)

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

  template

    inline bool

    operator!=(const set<_Key, _Compare, _Allocator>& __lhs,

	       const set<_Key, _Compare, _Allocator>& __rhs)

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

  template

    inline bool

    operator<(const set<_Key, _Compare, _Allocator>& __lhs,

	      const set<_Key, _Compare, _Allocator>& __rhs)

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

  template

    inline bool

    operator<=(const set<_Key, _Compare, _Allocator>& __lhs,

	       const set<_Key, _Compare, _Allocator>& __rhs)

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

  template

    inline bool

    operator>=(const set<_Key, _Compare, _Allocator>& __lhs,

	       const set<_Key, _Compare, _Allocator>& __rhs)

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

  template

    inline bool

    operator>(const set<_Key, _Compare, _Allocator>& __lhs,

	      const set<_Key, _Compare, _Allocator>& __rhs)

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

  template

    void

    swap(set<_Key, _Compare, _Allocator>& __x,

	 set<_Key, _Compare, _Allocator>& __y)

    { return __x.swap(__y); }

} // namespace __debug

} // namespace std

#endif