00001 // Copyright (C) 2007-2011 CEA/DEN, EDF R&D, OPEN CASCADE 00002 // 00003 // This library is free software; you can redistribute it and/or 00004 // modify it under the terms of the GNU Lesser General Public 00005 // License as published by the Free Software Foundation; either 00006 // version 2.1 of the License. 00007 // 00008 // This library is distributed in the hope that it will be useful, 00009 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00010 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00011 // Lesser General Public License for more details. 00012 // 00013 // You should have received a copy of the GNU Lesser General Public 00014 // License along with this library; if not, write to the Free Software 00015 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00016 // 00017 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com 00018 // 00019 00020 // SMESH SMDS : implementaion of Salome mesh data structure 00021 // File : SMDS_StdIterator.hxx 00022 // Created : Fri Feb 5 11:03:46 2010 00023 // Author : Edward AGAPOV (eap) 00024 // 00025 #ifndef __SMDS_StdIterator_HXX__ 00026 #define __SMDS_StdIterator_HXX__ 00027 00028 00030 00034 00035 00036 template<typename VALUE, class PtrSMDSIterator, class EqualVALUE = std::equal_to<VALUE> > 00037 class SMDS_StdIterator : public std::iterator< std::input_iterator_tag, VALUE > 00038 { 00039 VALUE _value; 00040 PtrSMDSIterator _piterator; 00041 EqualVALUE _EqualVALUE; 00042 00043 public: 00044 typedef SMDS_StdIterator<VALUE, PtrSMDSIterator> _Self; 00045 00046 // constructor to use as return from begin() 00047 SMDS_StdIterator( PtrSMDSIterator pItr ) 00048 : _value( pItr->more() ? (VALUE)(pItr->next()) : 0 ), _piterator(pItr) 00049 {} 00050 // constructor to use as return from end() 00051 SMDS_StdIterator(): _value( 0 ) 00052 {} 00053 00055 VALUE operator*() const 00056 { return _value; } 00057 00058 // Step to the next one 00059 _Self& 00060 operator++() 00061 { _value = _piterator->more() ? VALUE( _piterator->next()) : 0; return *this; } 00062 00063 // Step to the next one 00064 _Self 00065 operator++(int) 00066 { _Self res = *this; _value = _piterator->more() ? VALUE( _piterator->next()) : 0; return res; } 00067 00068 // Test of end 00069 bool 00070 operator!=(const _Self& __x) const 00071 { return !_EqualVALUE( _value, __x._value); } 00072 00073 // Test of equality 00074 bool 00075 operator==(const _Self& __x) const 00076 { return _EqualVALUE( _value, __x._value); } 00077 00078 }; 00079 00080 #endif