stl_multiset.h

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// Multiset implementation -*- C++ -*-

// Copyright (C) 2001, 2002, 2004 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 2, 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.

// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING.  If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.

// As a special exception, you may use this file as part of a free software
// library without restriction.  Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License.  This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.

/*
 *
 * Copyright (c) 1994
 * Hewlett-Packard Company
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Hewlett-Packard Company makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 *
 * Copyright (c) 1996
 * Silicon Graphics Computer Systems, Inc.
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Silicon Graphics makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 */

#ifndef _MULTISET_H
#define _MULTISET_H 1

#include <bits/concept_check.h>

namespace _GLIBCXX_STD
{

  // Forward declaration of operators < and ==, needed for friend declaration.
  template <class _Key, class _Compare = less<_Key>,
        class _Alloc = allocator<_Key> >
    class multiset;

  template <class _Key, class _Compare, class _Alloc>
    inline bool
    operator==(const multiset<_Key,_Compare,_Alloc>& __x,
           const multiset<_Key,_Compare,_Alloc>& __y);

  template <class _Key, class _Compare, class _Alloc>
    inline bool
    operator<(const multiset<_Key,_Compare,_Alloc>& __x,
          const multiset<_Key,_Compare,_Alloc>& __y);

  template <class _Key, class _Compare, class _Alloc>
    class multiset
    {
      // concept requirements
      __glibcxx_class_requires(_Key, _SGIAssignableConcept)
      __glibcxx_class_requires4(_Compare, bool, _Key, _Key,
                _BinaryFunctionConcept)

    public:
      // typedefs:
      typedef _Key     key_type;
      typedef _Key     value_type;
      typedef _Compare key_compare;
      typedef _Compare value_compare;

    private:
      typedef _Rb_tree<key_type, value_type,
               _Identity<value_type>, key_compare, _Alloc> _Rep_type;
      _Rep_type _M_t;

    public:
      typedef typename _Alloc::pointer pointer;
      typedef typename _Alloc::const_pointer const_pointer;
      typedef typename _Alloc::reference reference;
      typedef typename _Alloc::const_reference const_reference;
      // _GLIBCXX_RESOLVE_LIB_DEFECTS
      // DR 103. set::iterator is required to be modifiable,
      // but this allows modification of keys.
      typedef typename _Rep_type::const_iterator iterator;
      typedef typename _Rep_type::const_iterator const_iterator;
      typedef typename _Rep_type::const_reverse_iterator reverse_iterator;
      typedef typename _Rep_type::const_reverse_iterator const_reverse_iterator;
      typedef typename _Rep_type::size_type size_type;
      typedef typename _Rep_type::difference_type difference_type;
      typedef typename _Rep_type::allocator_type allocator_type;

    // allocation/deallocation

      multiset()
      : _M_t(_Compare(), allocator_type()) { }

      explicit
      multiset(const _Compare& __comp,
           const allocator_type& __a = allocator_type())
      : _M_t(__comp, __a) { }

      template <class _InputIterator>
        multiset(_InputIterator __first, _InputIterator __last)
    : _M_t(_Compare(), allocator_type())
        { _M_t.insert_equal(__first, __last); }

      template <class _InputIterator>
        multiset(_InputIterator __first, _InputIterator __last,
         const _Compare& __comp,
         const allocator_type& __a = allocator_type())
    : _M_t(__comp, __a)
        { _M_t.insert_equal(__first, __last); }

      multiset(const multiset<_Key,_Compare,_Alloc>& __x)
      : _M_t(__x._M_t) { }

      multiset<_Key,_Compare,_Alloc>&
      operator=(const multiset<_Key,_Compare,_Alloc>& __x)
      {
    _M_t = __x._M_t;
    return *this;
      }

      // accessors:

      key_compare
      key_comp() const
      { return _M_t.key_comp(); }
      value_compare
      value_comp() const
      { return _M_t.key_comp(); }
      allocator_type
      get_allocator() const
      { return _M_t.get_allocator(); }

      iterator
      begin() const
      { return _M_t.begin(); }

      iterator
      end() const
      { return _M_t.end(); }

      reverse_iterator
      rbegin() const
      { return _M_t.rbegin(); }

      reverse_iterator
      rend() const
      { return _M_t.rend(); }

      bool
      empty() const
      { return _M_t.empty(); }

      size_type
      size() const
      { return _M_t.size(); }

      size_type
      max_size() const
      { return _M_t.max_size(); }

      void
      swap(multiset<_Key,_Compare,_Alloc>& __x)
      { _M_t.swap(__x._M_t); }

      // insert/erase
      iterator
      insert(const value_type& __x)
      { return _M_t.insert_equal(__x); }

      iterator
      insert(iterator __position, const value_type& __x)
      {
    typedef typename _Rep_type::iterator _Rep_iterator;
    return _M_t.insert_equal((_Rep_iterator&)__position, __x);
      }

      template <class _InputIterator>
        void
        insert(_InputIterator __first, _InputIterator __last)
        { _M_t.insert_equal(__first, __last); }

      void
      erase(iterator __position)
      {
    typedef typename _Rep_type::iterator _Rep_iterator;
    _M_t.erase((_Rep_iterator&)__position);
      }

      size_type
      erase(const key_type& __x)
      { return _M_t.erase(__x); }

      void
      erase(iterator __first, iterator __last)
      {
    typedef typename _Rep_type::iterator _Rep_iterator;
    _M_t.erase((_Rep_iterator&)__first, (_Rep_iterator&)__last);
      }

      void
      clear()
      { _M_t.clear(); }

      // multiset operations:

      size_type
      count(const key_type& __x) const
      { return _M_t.count(__x); }

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

      iterator
      find(const key_type& __x)
      { return _M_t.find(__x); }

      const_iterator
      find(const key_type& __x) const
      { return _M_t.find(__x); }


      iterator
      lower_bound(const key_type& __x)
      { return _M_t.lower_bound(__x); }

      const_iterator
      lower_bound(const key_type& __x) const
      { return _M_t.lower_bound(__x); }


      iterator
      upper_bound(const key_type& __x)
      { return _M_t.upper_bound(__x); }

      const_iterator
      upper_bound(const key_type& __x) const
      { return _M_t.upper_bound(__x); }


      pair<iterator,iterator>
      equal_range(const key_type& __x)
      { return _M_t.equal_range(__x); }

      pair<const_iterator,const_iterator>
      equal_range(const key_type& __x) const
      { return _M_t.equal_range(__x); }

      template <class _K1, class _C1, class _A1>
        friend bool
        operator== (const multiset<_K1,_C1,_A1>&,
            const multiset<_K1,_C1,_A1>&);

      template <class _K1, class _C1, class _A1>
        friend bool
        operator< (const multiset<_K1,_C1,_A1>&,
           const multiset<_K1,_C1,_A1>&);
    };

  template <class _Key, class _Compare, class _Alloc>
    inline bool
    operator==(const multiset<_Key,_Compare,_Alloc>& __x,
           const multiset<_Key,_Compare,_Alloc>& __y)
    { return __x._M_t == __y._M_t; }

  template <class _Key, class _Compare, class _Alloc>
    inline bool
    operator<(const multiset<_Key,_Compare,_Alloc>& __x,
          const multiset<_Key,_Compare,_Alloc>& __y)
    { return __x._M_t < __y._M_t; }

  template <class _Key, class _Compare, class _Alloc>
    inline bool
    operator!=(const multiset<_Key,_Compare,_Alloc>& __x,
           const multiset<_Key,_Compare,_Alloc>& __y)
    { return !(__x == __y); }

  template <class _Key, class _Compare, class _Alloc>
    inline bool
    operator>(const multiset<_Key,_Compare,_Alloc>& __x,
          const multiset<_Key,_Compare,_Alloc>& __y)
    { return __y < __x; }

  template <class _Key, class _Compare, class _Alloc>
    inline bool
    operator<=(const multiset<_Key,_Compare,_Alloc>& __x,
           const multiset<_Key,_Compare,_Alloc>& __y)
    { return !(__y < __x); }

  template <class _Key, class _Compare, class _Alloc>
    inline bool
    operator>=(const multiset<_Key,_Compare,_Alloc>& __x,
           const multiset<_Key,_Compare,_Alloc>& __y)
    { return !(__x < __y); }

  template <class _Key, class _Compare, class _Alloc>
    inline void
    swap(multiset<_Key,_Compare,_Alloc>& __x,
     multiset<_Key,_Compare,_Alloc>& __y)
    { __x.swap(__y); }

} // namespace std

#endif /* _MULTISET_H */

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