1 // Copyright (C) 2007-2011 CEA/DEN, EDF R&D, OPEN CASCADE
3 // Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Lesser General Public
8 // License as published by the Free Software Foundation; either
9 // version 2.1 of the License.
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Lesser General Public License for more details.
16 // You should have received a copy of the GNU Lesser General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
23 // SMESH SMDS : implementaion of Salome mesh data structure
24 // File : SMDS_IteratorOnIterators.hxx
25 // Author : Edward AGAPOV (eap)
27 #ifndef SMDS_IteratorOnIterators_HeaderFile
28 #define SMDS_IteratorOnIterators_HeaderFile
30 #include "SMDS_Iterator.hxx"
32 ///////////////////////////////////////////////////////////////////////////////
33 /// SMDS_Iterator iterating over all elements provided by other iterators
35 /// Other iterators must implement SMDS_Iterator iterface and
36 /// must be provided within a stl-like container
37 /// BE CAREFUL: iterator pointed value is static_cast'ed to VALUE
38 ///////////////////////////////////////////////////////////////////////////////
40 template<typename VALUE,
41 typename CONTAINER_OF_ITERATORS >
42 class SMDS_IteratorOnIterators : public SMDS_Iterator<VALUE>
45 CONTAINER_OF_ITERATORS _iterators;
46 typename CONTAINER_OF_ITERATORS::iterator _beg, _end;
48 SMDS_IteratorOnIterators(const CONTAINER_OF_ITERATORS& iterators):
49 _iterators( iterators ), _beg( _iterators.begin()), _end(_iterators.end() ) {}
51 /// Return true iff there are other object in this iterator
52 virtual bool more() { return _beg != _end && (*_beg)->more(); }
54 /// Return the current object and step to the next one
57 VALUE __v = (VALUE)(*_beg)->next();
58 while ( _beg != _end && !(*_beg)->more())