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salome-smesh  6.5.0
SMDS_IteratorOnIterators.hxx
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00001 // Copyright (C) 2007-2012  CEA/DEN, EDF R&D, OPEN CASCADE
00002 //
00003 // Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
00004 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
00005 //
00006 // This library is free software; you can redistribute it and/or
00007 // modify it under the terms of the GNU Lesser General Public
00008 // License as published by the Free Software Foundation; either
00009 // version 2.1 of the License.
00010 //
00011 // This library is distributed in the hope that it will be useful,
00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014 // Lesser General Public License for more details.
00015 //
00016 // You should have received a copy of the GNU Lesser General Public
00017 // License along with this library; if not, write to the Free Software
00018 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
00019 //
00020 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
00021 //
00022 
00023 //  SMESH SMDS : implementaion of Salome mesh data structure
00024 // File      : SMDS_IteratorOnIterators.hxx
00025 // Author    : Edward AGAPOV (eap)
00026 //
00027 #ifndef SMDS_IteratorOnIterators_HeaderFile
00028 #define SMDS_IteratorOnIterators_HeaderFile
00029 
00030 #include "SMDS_Iterator.hxx"
00031 
00039 
00040 template<typename VALUE,
00041          typename CONTAINER_OF_ITERATORS >
00042 class SMDS_IteratorOnIterators : public SMDS_Iterator<VALUE>
00043 {
00044 protected:
00045   CONTAINER_OF_ITERATORS _iterators;
00046   typename CONTAINER_OF_ITERATORS::iterator _beg, _end;
00047 public:
00048   SMDS_IteratorOnIterators(const CONTAINER_OF_ITERATORS& iterators):
00049     _iterators( iterators ), _beg( _iterators.begin()), _end(_iterators.end() )
00050   {
00051     while ( _beg != _end && !(*_beg)->more()) ++_beg;
00052   }
00053 
00055   virtual bool more() { return _beg != _end && (*_beg)->more(); }
00056 
00058   virtual VALUE next()
00059   {
00060     VALUE __v = (VALUE)(*_beg)->next();
00061     while ( _beg != _end && !(*_beg)->more())
00062       ++_beg;
00063     return __v;
00064   }
00065 };
00066 
00067 #endif