map.h

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

// Copyright (C) 2003, 2004, 2005, 2006, 2007
// 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
// 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.

/** @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
{
namespace __debug
{
  template<typename _Key, typename _Tp, typename _Compare = std::less<_Key>,
       typename _Allocator = std::allocator<std::pair<const _Key, _Tp> > >
    class map
    : public _GLIBCXX_STD_D::map<_Key, _Tp, _Compare, _Allocator>,
      public __gnu_debug::_Safe_sequence<map<_Key, _Tp, _Compare, _Allocator> >
    {
      typedef _GLIBCXX_STD_D::map<_Key, _Tp, _Compare, _Allocator> _Base;
      typedef __gnu_debug::_Safe_sequence<map> _Safe_base;

    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<typename _Base::iterator, map>
                                                    iterator;
      typedef __gnu_debug::_Safe_iterator<typename _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;

      using _Base::value_compare;

      // 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::__check_valid_range(__first, __last), __last,
        __comp, __a), _Safe_base() { }

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

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

#ifdef __GXX_EXPERIMENTAL_CXX0X__
      map(map&& __x)
      : _Base(std::forward<map>(__x)), _Safe_base()
      { this->_M_swap(__x); }
#endif

      ~map() { }

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

#ifdef __GXX_EXPERIMENTAL_CXX0X__
      map&
      operator=(map&& __x)
      {
        // NB: DR 675.
    clear();
    swap(__x);
    return *this;
      }
#endif

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

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

      iterator
      insert(iterator __position, const value_type& __x)
      {
    __glibcxx_check_insert(__position);
    return iterator(_Base::insert(__position.base(), __x), this);
      }

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

      void
      erase(iterator __position)
      {
    __glibcxx_check_erase(__position);
    __position._M_invalidate();
    _Base::erase(__position.base());
      }

      size_type
      erase(const key_type& __x)
      {
    iterator __victim = find(__x);
    if (__victim == end())
      return 0;
    else
    {
      __victim._M_invalidate();
      _Base::erase(__victim.base());
      return 1;
    }
      }

      void
      erase(iterator __first, iterator __last)
      {
    // _GLIBCXX_RESOLVE_LIB_DEFECTS
    // 151. can't currently clear() empty container
    __glibcxx_check_erase_range(__first, __last);
    while (__first != __last)
      this->erase(__first++);
      }

      void
#ifdef __GXX_EXPERIMENTAL_CXX0X__
      swap(map&& __x)
#else
      swap(map& __x)
#endif
      {
    _Base::swap(__x);
    this->_M_swap(__x);
      }

      void
      clear()
      { this->erase(begin(), end()); }

      // 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)
      {
    typedef typename _Base::iterator _Base_iterator;
    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
      {
    typedef typename _Base::const_iterator _Base_const_iterator;
    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() { return *this; }

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

    private:
      void
      _M_invalidate_all()
      {
    typedef typename _Base::const_iterator _Base_const_iterator;
    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); }

#ifdef __GXX_EXPERIMENTAL_CXX0X__
  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); }

  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); }
#endif

} // namespace __debug
} // namespace std

#endif

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