hash_set.h

Go to the documentation of this file.

// Debugging hash_set implementation -*- C++ -*-

// Copyright (C) 2003
// 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.

#ifndef _GLIBCXX_DEBUG_HASH_SET_H
#define _GLIBCXX_DEBUG_HASH_SET_H 1

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

namespace __gnu_debug_def
{
  template<typename _Value,
       typename _HashFcn  = __gnu_cxx::hash<_Value>,
       typename _EqualKey = std::equal_to<_Value>,
       typename _Alloc =  std::allocator<_Value> >
    class hash_set
    : public __gnu_cxx::hash_set<_Value, _HashFcn, _EqualKey, _Alloc>,
      public __gnu_debug::_Safe_sequence<hash_set<_Value, _HashFcn, _EqualKey,
                          _Alloc> >
    {
      typedef __gnu_cxx::hash_set<_Value, _HashFcn, _EqualKey, _Alloc> _Base;
      typedef __gnu_debug::_Safe_sequence<hash_set> _Safe_base;

    public:
      typedef typename _Base::key_type        key_type;
      typedef typename _Base::value_type      value_type;
      typedef typename _Base::hasher          hasher;
      typedef typename _Base::key_equal       key_equal;
      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 typename _Base::reference       reference;
      typedef typename _Base::const_reference const_reference;

      typedef __gnu_debug::_Safe_iterator<typename _Base::iterator, hash_set>
                                              iterator;
      typedef __gnu_debug::_Safe_iterator<typename _Base::const_iterator,
                      hash_set>
                                              const_iterator;

      typedef typename _Base::allocator_type allocator_type;

      using _Base::hash_funct;
      using _Base::key_eq;
      using _Base::get_allocator;

      hash_set() { }

      explicit hash_set(size_type __n) : _Base(__n) { }

      hash_set(size_type __n, const hasher& __hf) : _Base(__n, __hf) { }

      hash_set(size_type __n, const hasher& __hf, const key_equal& __eql,
           const allocator_type& __a = allocator_type())
      : _Base(__n, __hf, __eql, __a) { }

      template<typename _InputIterator>
        hash_set(_InputIterator __f, _InputIterator __l)
        : _Base(__gnu_debug::__check_valid_range(__f, __l), __l) { }

      template<typename _InputIterator>
        hash_set(_InputIterator __f, _InputIterator __l, size_type __n)
    : _Base(__gnu_debug::__check_valid_range(__f, __l), __l, __n) { }

      template<typename _InputIterator>
        hash_set(_InputIterator __f, _InputIterator __l, size_type __n,
         const hasher& __hf)
    : _Base(__gnu_debug::__check_valid_range(__f, __l), __l, __n, __hf) { }

      template<typename _InputIterator>
        hash_set(_InputIterator __f, _InputIterator __l, size_type __n,
         const hasher& __hf, const key_equal& __eql,
         const allocator_type& __a = allocator_type())
    : _Base(__gnu_debug::__check_valid_range(__f, __l), __l, __n, __hf,
        __eql, __a) { }

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

      using _Base::size;
      using _Base::max_size;
      using _Base::empty;

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

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

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

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

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


      std::pair<iterator, bool>
      insert_noresize(const value_type& __obj)
      {
    std::pair<typename _Base::iterator, bool> __res =
        _Base::insert_noresize(__obj);
    return std::make_pair(iterator(__res.first, this), __res.second);
      }

      iterator
      find(const key_type& __key) const
      { return iterator(_Base::find(__key), this); }

      using _Base::count;

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

      size_type
      erase(const key_type& __key)
      {
    iterator __victim(_Base::find(__key), this);
    if (__victim != end())
      return this->erase(__victim), 1;
    else
      return 0;
      }

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

      void
      erase(iterator __first, iterator __last)
      {
    __glibcxx_check_erase_range(__first, __last);
    for (iterator __tmp = __first; __tmp != __last;)
    {
      iterator __victim = __tmp++;
      __victim._M_invalidate();
    }
    _Base::erase(__first.base(), __last.base());
      }

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

      using _Base::resize;
      using _Base::bucket_count;
      using _Base::max_bucket_count;
      using _Base::elems_in_bucket;

      _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 _Value, typename _HashFcn, typename _EqualKey,
       typename _Alloc>
    inline bool
    operator==(const hash_set<_Value, _HashFcn, _EqualKey, _Alloc>& __x,
           const hash_set<_Value, _HashFcn, _EqualKey, _Alloc>& __y)
    { return __x._M_base() == __y._M_base(); }

  template<typename _Value, typename _HashFcn, typename _EqualKey,
       typename _Alloc>
    inline bool
    operator!=(const hash_set<_Value, _HashFcn, _EqualKey, _Alloc>& __x,
           const hash_set<_Value, _HashFcn, _EqualKey, _Alloc>& __y)
    { return __x._M_base() != __y._M_base(); }

  template<typename _Value, typename _HashFcn, typename _EqualKey,
       typename _Alloc>
    inline void
    swap(hash_set<_Value, _HashFcn, _EqualKey, _Alloc>& __x,
     hash_set<_Value, _HashFcn, _EqualKey, _Alloc>& __y)
    { __x.swap(__y); }
} // namespace __gnu_debug_def

#endif

---