set.h

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00001 // Debugging set implementation -*- C++ -*-
00002 
00003 // Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009
00004 // Free Software Foundation, Inc.
00005 //
00006 // This file is part of the GNU ISO C++ Library.  This library is free
00007 // software; you can redistribute it and/or modify it under the
00008 // terms of the GNU General Public License as published by the
00009 // Free Software Foundation; either version 3, or (at your option)
00010 // any later version.
00011 
00012 // This library is distributed in the hope that it will be useful,
00013 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00014 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015 // GNU General Public License for more details.
00016 
00017 // Under Section 7 of GPL version 3, you are granted additional
00018 // permissions described in the GCC Runtime Library Exception, version
00019 // 3.1, as published by the Free Software Foundation.
00020 
00021 // You should have received a copy of the GNU General Public License and
00022 // a copy of the GCC Runtime Library Exception along with this program;
00023 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
00024 // <http://www.gnu.org/licenses/>.
00025 
00026 /** @file debug/set.h
00027  *  This file is a GNU debug extension to the Standard C++ Library.
00028  */
00029 
00030 #ifndef _GLIBCXX_DEBUG_SET_H
00031 #define _GLIBCXX_DEBUG_SET_H 1
00032 
00033 #include <debug/safe_sequence.h>
00034 #include <debug/safe_iterator.h>
00035 #include <utility>
00036 
00037 namespace std 
00038 {
00039 namespace __debug
00040 {
00041   template<typename _Key, typename _Compare = std::less<_Key>,
00042        typename _Allocator = std::allocator<_Key> >
00043     class set
00044     : public _GLIBCXX_STD_D::set<_Key,_Compare,_Allocator>,
00045       public __gnu_debug::_Safe_sequence<set<_Key, _Compare, _Allocator> >
00046     {
00047       typedef _GLIBCXX_STD_D::set<_Key, _Compare, _Allocator> _Base;
00048       typedef __gnu_debug::_Safe_sequence<set> _Safe_base;
00049 
00050     public:
00051       // types:
00052       typedef _Key                  key_type;
00053       typedef _Key                  value_type;
00054       typedef _Compare                  key_compare;
00055       typedef _Compare                  value_compare;
00056       typedef _Allocator                allocator_type;
00057       typedef typename _Base::reference             reference;
00058       typedef typename _Base::const_reference       const_reference;
00059 
00060       typedef __gnu_debug::_Safe_iterator<typename _Base::iterator, set>
00061                                                     iterator;
00062       typedef __gnu_debug::_Safe_iterator<typename _Base::const_iterator, set>
00063                                                     const_iterator;
00064 
00065       typedef typename _Base::size_type             size_type;
00066       typedef typename _Base::difference_type       difference_type;
00067       typedef typename _Base::pointer               pointer;
00068       typedef typename _Base::const_pointer         const_pointer;
00069       typedef std::reverse_iterator<iterator>       reverse_iterator;
00070       typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
00071 
00072       // 23.3.3.1 construct/copy/destroy:
00073       explicit set(const _Compare& __comp = _Compare(),
00074            const _Allocator& __a = _Allocator())
00075       : _Base(__comp, __a) { }
00076 
00077       template<typename _InputIterator>
00078         set(_InputIterator __first, _InputIterator __last,
00079         const _Compare& __comp = _Compare(),
00080         const _Allocator& __a = _Allocator())
00081     : _Base(__gnu_debug::__check_valid_range(__first, __last), __last,
00082         __comp, __a) { }
00083 
00084       set(const set& __x)
00085       : _Base(__x), _Safe_base() { }
00086 
00087       set(const _Base& __x)
00088       : _Base(__x), _Safe_base() { }
00089 
00090 #ifdef __GXX_EXPERIMENTAL_CXX0X__
00091       set(set&& __x)
00092       : _Base(std::forward<set>(__x)), _Safe_base()
00093       { this->_M_swap(__x); }
00094 
00095       set(initializer_list<value_type> __l,
00096       const _Compare& __comp = _Compare(),
00097       const allocator_type& __a = allocator_type())
00098       : _Base(__l, __comp, __a), _Safe_base() { }
00099 #endif
00100 
00101       ~set() { }
00102 
00103       set&
00104       operator=(const set& __x)
00105       {
00106     *static_cast<_Base*>(this) = __x;
00107     this->_M_invalidate_all();
00108     return *this;
00109       }
00110 
00111 #ifdef __GXX_EXPERIMENTAL_CXX0X__
00112       set&
00113       operator=(set&& __x)
00114       {
00115         // NB: DR 675.
00116     clear();
00117     swap(__x);
00118     return *this;
00119       }
00120 
00121       set&
00122       operator=(initializer_list<value_type> __l)
00123       {
00124     this->clear();
00125     this->insert(__l);
00126     return *this;
00127       }
00128 #endif
00129 
00130       using _Base::get_allocator;
00131 
00132       // iterators:
00133       iterator
00134       begin()
00135       { return iterator(_Base::begin(), this); }
00136 
00137       const_iterator
00138       begin() const
00139       { return const_iterator(_Base::begin(), this); }
00140 
00141       iterator
00142       end()
00143       { return iterator(_Base::end(), this); }
00144 
00145       const_iterator
00146       end() const
00147       { return const_iterator(_Base::end(), this); }
00148 
00149       reverse_iterator
00150       rbegin()
00151       { return reverse_iterator(end()); }
00152 
00153       const_reverse_iterator
00154       rbegin() const
00155       { return const_reverse_iterator(end()); }
00156 
00157       reverse_iterator
00158       rend()
00159       { return reverse_iterator(begin()); }
00160 
00161       const_reverse_iterator
00162       rend() const
00163       { return const_reverse_iterator(begin()); }
00164 
00165 #ifdef __GXX_EXPERIMENTAL_CXX0X__
00166       const_iterator
00167       cbegin() const
00168       { return const_iterator(_Base::begin(), this); }
00169 
00170       const_iterator
00171       cend() const
00172       { return const_iterator(_Base::end(), this); }
00173 
00174       const_reverse_iterator
00175       crbegin() const
00176       { return const_reverse_iterator(end()); }
00177 
00178       const_reverse_iterator
00179       crend() const
00180       { return const_reverse_iterator(begin()); }
00181 #endif
00182 
00183       // capacity:
00184       using _Base::empty;
00185       using _Base::size;
00186       using _Base::max_size;
00187 
00188       // modifiers:
00189       std::pair<iterator, bool>
00190       insert(const value_type& __x)
00191       {
00192     typedef typename _Base::iterator _Base_iterator;
00193     std::pair<_Base_iterator, bool> __res = _Base::insert(__x);
00194     return std::pair<iterator, bool>(iterator(__res.first, this),
00195                      __res.second);
00196       }
00197 
00198       iterator
00199       insert(iterator __position, const value_type& __x)
00200       {
00201     __glibcxx_check_insert(__position);
00202     return iterator(_Base::insert(__position.base(), __x), this);
00203       }
00204 
00205       template <typename _InputIterator>
00206         void
00207         insert(_InputIterator __first, _InputIterator __last)
00208         {
00209       __glibcxx_check_valid_range(__first, __last);
00210       _Base::insert(__first, __last);
00211     }
00212 
00213 #ifdef __GXX_EXPERIMENTAL_CXX0X__
00214       void
00215       insert(initializer_list<value_type> __l)
00216       { _Base::insert(__l); }
00217 #endif
00218 
00219       void
00220       erase(iterator __position)
00221       {
00222     __glibcxx_check_erase(__position);
00223     __position._M_invalidate();
00224     _Base::erase(__position.base());
00225       }
00226 
00227       size_type
00228       erase(const key_type& __x)
00229       {
00230     iterator __victim = find(__x);
00231     if (__victim == end())
00232           return 0;
00233     else
00234         {
00235       __victim._M_invalidate();
00236       _Base::erase(__victim.base());
00237       return 1;
00238         }
00239       }
00240 
00241       void
00242       erase(iterator __first, iterator __last)
00243       {
00244     // _GLIBCXX_RESOLVE_LIB_DEFECTS
00245     // 151. can't currently clear() empty container
00246     __glibcxx_check_erase_range(__first, __last);
00247 
00248     while (__first != __last)
00249         this->erase(__first++);
00250       }
00251 
00252       void
00253 #ifdef __GXX_EXPERIMENTAL_CXX0X__
00254       swap(set&& __x)
00255 #else
00256       swap(set& __x)
00257 #endif
00258       {
00259     _Base::swap(__x);
00260     this->_M_swap(__x);
00261       }
00262 
00263       void
00264       clear()
00265       { this->erase(begin(), end()); }
00266 
00267       // observers:
00268       using _Base::key_comp;
00269       using _Base::value_comp;
00270 
00271       // set operations:
00272       iterator
00273       find(const key_type& __x)
00274       { return iterator(_Base::find(__x), this); }
00275 
00276       // _GLIBCXX_RESOLVE_LIB_DEFECTS
00277       // 214. set::find() missing const overload
00278       const_iterator
00279       find(const key_type& __x) const
00280       { return const_iterator(_Base::find(__x), this); }
00281 
00282       using _Base::count;
00283 
00284       iterator
00285       lower_bound(const key_type& __x)
00286       { return iterator(_Base::lower_bound(__x), this); }
00287 
00288       // _GLIBCXX_RESOLVE_LIB_DEFECTS
00289       // 214. set::find() missing const overload
00290       const_iterator
00291       lower_bound(const key_type& __x) const
00292       { return const_iterator(_Base::lower_bound(__x), this); }
00293 
00294       iterator
00295       upper_bound(const key_type& __x)
00296       { return iterator(_Base::upper_bound(__x), this); }
00297 
00298       // _GLIBCXX_RESOLVE_LIB_DEFECTS
00299       // 214. set::find() missing const overload
00300       const_iterator
00301       upper_bound(const key_type& __x) const
00302       { return const_iterator(_Base::upper_bound(__x), this); }
00303 
00304       std::pair<iterator,iterator>
00305       equal_range(const key_type& __x)
00306       {
00307     typedef typename _Base::iterator _Base_iterator;
00308     std::pair<_Base_iterator, _Base_iterator> __res =
00309         _Base::equal_range(__x);
00310     return std::make_pair(iterator(__res.first, this),
00311                   iterator(__res.second, this));
00312       }
00313 
00314       // _GLIBCXX_RESOLVE_LIB_DEFECTS
00315       // 214. set::find() missing const overload
00316       std::pair<const_iterator,const_iterator>
00317       equal_range(const key_type& __x) const
00318       {
00319     typedef typename _Base::const_iterator _Base_iterator;
00320     std::pair<_Base_iterator, _Base_iterator> __res =
00321         _Base::equal_range(__x);
00322     return std::make_pair(const_iterator(__res.first, this),
00323                   const_iterator(__res.second, this));
00324       }
00325 
00326       _Base&
00327       _M_base() { return *this; }
00328 
00329       const _Base&
00330       _M_base() const { return *this; }
00331 
00332     private:
00333       void
00334       _M_invalidate_all()
00335       {
00336     typedef typename _Base::const_iterator _Base_const_iterator;
00337     typedef __gnu_debug::_Not_equal_to<_Base_const_iterator> _Not_equal;
00338     this->_M_invalidate_if(_Not_equal(_M_base().end()));
00339       }
00340     };
00341 
00342   template<typename _Key, typename _Compare, typename _Allocator>
00343     inline bool
00344     operator==(const set<_Key, _Compare, _Allocator>& __lhs,
00345            const set<_Key, _Compare, _Allocator>& __rhs)
00346     { return __lhs._M_base() == __rhs._M_base(); }
00347 
00348   template<typename _Key, typename _Compare, typename _Allocator>
00349     inline bool
00350     operator!=(const set<_Key, _Compare, _Allocator>& __lhs,
00351            const set<_Key, _Compare, _Allocator>& __rhs)
00352     { return __lhs._M_base() != __rhs._M_base(); }
00353 
00354   template<typename _Key, typename _Compare, typename _Allocator>
00355     inline bool
00356     operator<(const set<_Key, _Compare, _Allocator>& __lhs,
00357           const set<_Key, _Compare, _Allocator>& __rhs)
00358     { return __lhs._M_base() < __rhs._M_base(); }
00359 
00360   template<typename _Key, typename _Compare, typename _Allocator>
00361     inline bool
00362     operator<=(const set<_Key, _Compare, _Allocator>& __lhs,
00363            const set<_Key, _Compare, _Allocator>& __rhs)
00364     { return __lhs._M_base() <= __rhs._M_base(); }
00365 
00366   template<typename _Key, typename _Compare, typename _Allocator>
00367     inline bool
00368     operator>=(const set<_Key, _Compare, _Allocator>& __lhs,
00369            const set<_Key, _Compare, _Allocator>& __rhs)
00370     { return __lhs._M_base() >= __rhs._M_base(); }
00371 
00372   template<typename _Key, typename _Compare, typename _Allocator>
00373     inline bool
00374     operator>(const set<_Key, _Compare, _Allocator>& __lhs,
00375           const set<_Key, _Compare, _Allocator>& __rhs)
00376     { return __lhs._M_base() > __rhs._M_base(); }
00377 
00378   template<typename _Key, typename _Compare, typename _Allocator>
00379     void
00380     swap(set<_Key, _Compare, _Allocator>& __x,
00381      set<_Key, _Compare, _Allocator>& __y)
00382     { return __x.swap(__y); }
00383 
00384 #ifdef __GXX_EXPERIMENTAL_CXX0X__
00385   template<typename _Key, typename _Compare, typename _Allocator>
00386     void
00387     swap(set<_Key, _Compare, _Allocator>&& __x,
00388      set<_Key, _Compare, _Allocator>& __y)
00389     { return __x.swap(__y); }
00390 
00391   template<typename _Key, typename _Compare, typename _Allocator>
00392     void
00393     swap(set<_Key, _Compare, _Allocator>& __x,
00394      set<_Key, _Compare, _Allocator>&& __y)
00395     { return __x.swap(__y); }
00396 #endif
00397 
00398 } // namespace __debug
00399 } // namespace std
00400 
00401 #endif

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