libstdc++-v3/include/debug/hash_map.h

   1 // Debugging hash_map implementation -*- C++ -*-
   2
   3 // Copyright (C) 2003, 2005, 2006
   4 // Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 2, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING.  If not, write to the Free
  19 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  20 // USA.
  21
  22 // As a special exception, you may use this file as part of a free software
  23 // library without restriction.  Specifically, if other files instantiate
  24 // templates or use macros or inline functions from this file, or you compile
  25 // this file and link it with other files to produce an executable, this
  26 // file does not by itself cause the resulting executable to be covered by
  27 // the GNU General Public License.  This exception does not however
  28 // invalidate any other reasons why the executable file might be covered by
  29 // the GNU General Public License.
  30
  31 /** @file debug/hash_map.h
  32  *  This file is a GNU debug extension to the Standard C++ Library.
  33  */
  34
  35 #ifndef _GLIBCXX_DEBUG_HASH_MAP_H
  36 #define _GLIBCXX_DEBUG_HASH_MAP_H 1
  37
  38 #include <debug/safe_sequence.h>
  39 #include <debug/safe_iterator.h>
  40
  41 namespace __gnu_cxx
  42 {
  43 namespace __debug
  44 {
  45   template<typename _Value, typename _Tp,
  46            typename _HashFcn  = __gnu_cxx::hash<_Value>,
  47            typename _EqualKey = std::equal_to<_Value>,
  48            typename _Alloc = std::allocator<_Value> >
  49     class hash_map
  50     : public _GLIBCXX_EXT::hash_map<_Value, _Tp, _HashFcn, _EqualKey, _Alloc>,
  51       public __gnu_debug::_Safe_sequence<hash_map<_Value, _Tp, _HashFcn,
  52                                                  _EqualKey, _Alloc> >
  53     {
  54       typedef _GLIBCXX_EXT::hash_map<_Value, _Tp, _HashFcn, _EqualKey, _Alloc>
  55                                                         _Base;
  56       typedef __gnu_debug::_Safe_sequence<hash_map>     _Safe_base;
  57
  58     public:
  59       typedef typename _Base::key_type        key_type;
  60       typedef typename _Base::data_type       data_type;
  61       typedef typename _Base::mapped_type     mapped_type;
  62       typedef typename _Base::value_type      value_type;
  63       typedef typename _Base::hasher          hasher;
  64       typedef typename _Base::key_equal       key_equal;
  65       typedef typename _Base::size_type       size_type;
  66       typedef typename _Base::difference_type difference_type;
  67       typedef typename _Base::pointer         pointer;
  68       typedef typename _Base::const_pointer   const_pointer;
  69       typedef typename _Base::reference       reference;
  70       typedef typename _Base::const_reference const_reference;
  71
  72       typedef __gnu_debug::_Safe_iterator<typename _Base::iterator, hash_map>
  73                                               iterator;
  74       typedef __gnu_debug::_Safe_iterator<typename _Base::const_iterator,
  75                                           hash_map>
  76                                               const_iterator;
  77
  78       typedef typename _Base::allocator_type  allocator_type;
  79
  80       using _Base::hash_funct;
  81       using _Base::key_eq;
  82       using _Base::get_allocator;
  83
  84       hash_map() { }
  85
  86       explicit hash_map(size_type __n) : _Base(__n) { }
  87
  88       hash_map(size_type __n, const hasher& __hf) : _Base(__n, __hf) { }
  89
  90       hash_map(size_type __n, const hasher& __hf, const key_equal& __eql,
  91                const allocator_type& __a = allocator_type())
  92       : _Base(__n, __hf, __eql, __a) { }
  93
  94       template<typename _InputIterator>
  95         hash_map(_InputIterator __f, _InputIterator __l)
  96         : _Base(__gnu_debug::__check_valid_range(__f, __l), __l) { }
  97
  98       template<typename _InputIterator>
  99         hash_map(_InputIterator __f, _InputIterator __l, size_type __n)
 100         : _Base(__gnu_debug::__check_valid_range(__f, __l), __l, __n) { }
 101
 102       template<typename _InputIterator>
 103         hash_map(_InputIterator __f, _InputIterator __l, size_type __n,
 104                  const hasher& __hf)
 105         : _Base(__gnu_debug::__check_valid_range(__f, __l), __l, __n, __hf) { }
 106
 107       template<typename _InputIterator>
 108         hash_map(_InputIterator __f, _InputIterator __l, size_type __n,
 109                  const hasher& __hf, const key_equal& __eql,
 110                  const allocator_type& __a = allocator_type())
 111         : _Base(__gnu_debug::__check_valid_range(__f, __l), __l, __n, __hf,
 112                 __eql, __a) { }
 113
 114       hash_map(const _Base& __x) : _Base(__x), _Safe_base() { }
 115
 116       using _Base::size;
 117       using _Base::max_size;
 118       using _Base::empty;
 119
 120       void
 121       swap(hash_map& __x)
 122       {
 123         _Base::swap(__x);
 124         this->_M_swap(__x);
 125       }
 126
 127       iterator
 128       begin() { return iterator(_Base::begin(), this); }
 129
 130       iterator
 131       end() { return iterator(_Base::end(),   this); }
 132
 133       const_iterator
 134       begin() const
 135       { return const_iterator(_Base::begin(), this); }
 136
 137       const_iterator
 138       end() const
 139       { return const_iterator(_Base::end(),   this); }
 140
 141       std::pair<iterator, bool>
 142       insert(const value_type& __obj)
 143       {
 144         std::pair<typename _Base::iterator, bool> __res = _Base::insert(__obj);
 145         return std::make_pair(iterator(__res.first, this), __res.second);
 146       }
 147
 148       void
 149       insert(const value_type* __first, const value_type* __last)
 150       {
 151         __glibcxx_check_valid_range(__first, __last);
 152         _Base::insert(__first, __last);
 153       }
 154
 155      template<typename _InputIterator>
 156         void
 157         insert(_InputIterator __first, _InputIterator __last)
 158         {
 159           __glibcxx_check_valid_range(__first, __last);
 160           _Base::insert(__first.base(), __last.base());
 161         }
 162
 163
 164       std::pair<iterator, bool>
 165       insert_noresize(const value_type& __obj)
 166       {
 167         std::pair<typename _Base::iterator, bool> __res =
 168                                                 _Base::insert_noresize(__obj);
 169         return std::make_pair(iterator(__res.first, this), __res.second);
 170       }
 171
 172       iterator
 173       find(const key_type& __key)
 174       { return iterator(_Base::find(__key), this); }
 175
 176       const_iterator
 177       find(const key_type& __key) const
 178       { return const_iterator(_Base::find(__key), this); }
 179
 180       using _Base::operator[];
 181       using _Base::count;
 182
 183       std::pair<iterator, iterator>
 184       equal_range(const key_type& __key)
 185       {
 186         typedef typename _Base::iterator _Base_iterator;
 187         std::pair<_Base_iterator, _Base_iterator> __res =
 188                           _Base::equal_range(__key);
 189         return std::make_pair(iterator(__res.first, this),
 190                               iterator(__res.second, this));
 191       }
 192
 193       std::pair<const_iterator, const_iterator>
 194       equal_range(const key_type& __key) const
 195       {
 196         typedef typename _Base::const_iterator _Base_iterator;
 197         std::pair<_Base_iterator, _Base_iterator> __res =
 198         _Base::equal_range(__key);
 199         return std::make_pair(const_iterator(__res.first, this),
 200                               const_iterator(__res.second, this));
 201       }
 202
 203       size_type
 204       erase(const key_type& __key)
 205       {
 206         iterator __victim(_Base::find(__key), this);
 207         if (__victim != end())
 208           return this->erase(__victim), 1;
 209         else
 210           return 0;
 211       }
 212
 213       void
 214       erase(iterator __it)
 215       {
 216         __glibcxx_check_erase(__it);
 217         __it._M_invalidate();
 218         _Base::erase(__it.base());
 219       }
 220
 221       void
 222       erase(iterator __first, iterator __last)
 223       {
 224         __glibcxx_check_erase_range(__first, __last);
 225         for (iterator __tmp = __first; __tmp != __last;)
 226         {
 227           iterator __victim = __tmp++;
 228           __victim._M_invalidate();
 229         }
 230         _Base::erase(__first.base(), __last.base());
 231       }
 232
 233       void
 234       clear()
 235       {
 236         _Base::clear();
 237         this->_M_invalidate_all();
 238       }
 239
 240       using _Base::resize;
 241       using _Base::bucket_count;
 242       using _Base::max_bucket_count;
 243       using _Base::elems_in_bucket;
 244
 245       _Base&
 246       _M_base()       { return *this; }
 247
 248       const _Base&
 249       _M_base() const { return *this; }
 250
 251     private:
 252       void
 253       _M_invalidate_all()
 254       {
 255         typedef typename _Base::const_iterator _Base_const_iterator;
 256         typedef __gnu_debug::_Not_equal_to<_Base_const_iterator> _Not_equal;
 257         this->_M_invalidate_if(_Not_equal(_M_base().end()));
 258       }
 259     };
 260
 261   template<typename _Value, typename _Tp, typename _HashFcn,
 262            typename _EqualKey, typename _Alloc>
 263     inline bool
 264     operator==(const hash_map<_Value, _Tp, _HashFcn, _EqualKey, _Alloc>& __x,
 265                const hash_map<_Value, _Tp, _HashFcn, _EqualKey, _Alloc>& __y)
 266     { return __x._M_base() == __y._M_base(); }
 267
 268   template<typename _Value, typename _Tp, typename _HashFcn,
 269            typename _EqualKey, typename _Alloc>
 270     inline bool
 271     operator!=(const hash_map<_Value, _Tp, _HashFcn, _EqualKey, _Alloc>& __x,
 272                const hash_map<_Value, _Tp, _HashFcn, _EqualKey, _Alloc>& __y)
 273     { return __x._M_base() != __y._M_base(); }
 274
 275   template<typename _Value, typename _Tp, typename _HashFcn,
 276            typename _EqualKey, typename _Alloc>
 277     inline void
 278     swap(hash_map<_Value, _Tp, _HashFcn, _EqualKey, _Alloc>& __x,
 279          hash_map<_Value, _Tp, _HashFcn, _EqualKey, _Alloc>& __y)
 280     { __x.swap(__y); }
 281 } // namespace __debug
 282 } // namespace __gnu_cxx
 283
 284 #endif