mirror of
https://git.salome-platform.org/gitpub/modules/smesh.git
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219 lines
8.0 KiB
C++
219 lines
8.0 KiB
C++
// Copyright (C) 2007-2019 CEA/DEN, EDF R&D, OPEN CASCADE
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//
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// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
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// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
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//
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// SMESH SMDS : implementation of Salome mesh data structure
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// File : SMDS_SetIterator.hxx
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// Created : Feb 27 2006
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// Author : Edward AGAPOV (eap)
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//
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#ifndef SMDS_SetIterator_HeaderFile
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#define SMDS_SetIterator_HeaderFile
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#include "SMDS_Iterator.hxx"
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namespace SMDS {
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///////////////////////////////////////////////////////////////////////////////
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/// Accessors to value pointed by iterator
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///////////////////////////////////////////////////////////////////////////////
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template<typename VALUE,typename VALUE_SET_ITERATOR>
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struct SimpleAccessor {
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static VALUE value(VALUE_SET_ITERATOR it) { return (VALUE) *it; }
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};
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template<typename VALUE,typename VALUE_SET_ITERATOR>
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struct KeyAccessor {
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static VALUE value(VALUE_SET_ITERATOR it) { return (VALUE) it->first; }
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};
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template<typename VALUE,typename VALUE_SET_ITERATOR>
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struct ValueAccessor {
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static VALUE value(VALUE_SET_ITERATOR it) { return (VALUE) it->second; }
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};
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template<typename VALUE,typename VALUE_SET_ITERATOR>
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struct PointerAccessor {
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static VALUE value(VALUE_SET_ITERATOR it) { return (VALUE) &(*it); }
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};
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///////////////////////////////////////////////////////////////////////////////
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/// Filters of value pointed by iterator
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///////////////////////////////////////////////////////////////////////////////
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template <typename VALUE>
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struct PassAllValueFilter
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{
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bool operator()(const VALUE& t ) { return true; }
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};
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template <typename VALUE>
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struct NonNullFilter
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{
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bool operator()(const VALUE& t ) { return bool( t ); }
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};
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}
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///////////////////////////////////////////////////////////////////////////////
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/// SMDS_Iterator iterating over abstract set of values like STL containers
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///
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/// BE CAREFUL: iterator pointed value is static_cast'ed to VALUE
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///
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///////////////////////////////////////////////////////////////////////////////
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template<typename VALUE,
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typename VALUE_SET_ITERATOR,
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typename ACCESOR=SMDS::SimpleAccessor<VALUE,VALUE_SET_ITERATOR>,
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typename VALUE_FILTER=SMDS::PassAllValueFilter<VALUE> >
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class SMDS_SetIterator : public SMDS_Iterator<VALUE>
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{
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protected:
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VALUE_SET_ITERATOR _beg, _end;
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VALUE_FILTER _filter;
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public:
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SMDS_SetIterator(const VALUE_SET_ITERATOR & begin,
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const VALUE_SET_ITERATOR & end,
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const VALUE_FILTER& filter=VALUE_FILTER())
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{ init ( begin, end, filter ); }
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/// Initialization
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virtual void init(const VALUE_SET_ITERATOR & begin,
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const VALUE_SET_ITERATOR & end,
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const VALUE_FILTER& filter=VALUE_FILTER())
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{
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_beg = begin;
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_end = end;
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_filter = filter;
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if ( more() && !_filter( ACCESOR::value( _beg )))
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next();
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}
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/// Return true iff there are other object in this iterator
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virtual bool more()
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{
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return _beg != _end;
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}
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/// Return the current object and step to the next one
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virtual VALUE next()
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{
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VALUE ret = ACCESOR::value( _beg++ );
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while ( more() && !_filter( ACCESOR::value( _beg )))
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++_beg;
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return ret;
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}
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};
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///////////////////////////////////////////////////////////////////////////////
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/// map iterators
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///////////////////////////////////////////////////////////////////////////////
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#include <map>
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/*!
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* \brief iterator on values of a map
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*/
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template<typename M>
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struct SMDS_mapIterator : public SMDS_SetIterator< typename M::mapped_type, typename M::const_iterator,
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SMDS::ValueAccessor<typename M::mapped_type,
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typename M::const_iterator> > {
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typedef SMDS_SetIterator< typename M::mapped_type, typename M::const_iterator,
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SMDS::ValueAccessor<typename M::mapped_type,
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typename M::const_iterator> > parent_type;
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SMDS_mapIterator(const M& m):parent_type(m.begin(),m.end()) {}
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};
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/*!
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* \brief reverse iterator on values of a map
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*/
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template<typename M>
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struct SMDS_mapReverseIterator : public SMDS_SetIterator< typename M::mapped_type,
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typename M::const_reverse_iterator,
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SMDS::ValueAccessor<typename M::mapped_type,
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typename M::const_reverse_iterator> > {
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typedef SMDS_SetIterator< typename M::mapped_type, typename M::const_reverse_iterator,
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SMDS::ValueAccessor<typename M::mapped_type,
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typename M::const_reverse_iterator> > parent_type;
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SMDS_mapReverseIterator(const M& m):parent_type(m.rbegin(),m.rend()) {}
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};
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/*!
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* \brief iterator on keys of a map
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*/
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template<typename M>
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struct SMDS_mapKeyIterator : public SMDS_SetIterator< typename M::key_type, typename M::const_iterator,
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SMDS::KeyAccessor<typename M::key_type,
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typename M::const_iterator> > {
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typedef SMDS_SetIterator< typename M::key_type, typename M::const_iterator,
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SMDS::KeyAccessor<typename M::key_type,
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typename M::const_iterator> > parent_type;
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SMDS_mapKeyIterator(const M& m):parent_type(m.begin(),m.end()) {}
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};
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/*!
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* \brief reverse iterator on keys of a map
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*/
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template<typename M>
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struct SMDS_mapKeyReverseIterator : public SMDS_SetIterator< typename M::key_type, typename M::const_iterator,
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SMDS::KeyAccessor<typename M::key_type,
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typename M::const_iterator> > {
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typedef SMDS_SetIterator< typename M::key_type, typename M::const_iterator,
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SMDS::KeyAccessor<typename M::key_type,
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typename M::const_iterator> > parent_type;
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SMDS_mapKeyReverseIterator(const M& m):parent_type(m.rbegin(),m.rend()) {}
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};
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///////////////////////////////////////////////////////////////////////////////
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// useful specifications
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///////////////////////////////////////////////////////////////////////////////
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#include <vector>
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class SMDS_MeshElement;
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class SMDS_MeshNode;
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typedef const SMDS_MeshElement* SMDS_pElement;
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typedef const SMDS_MeshNode* SMDS_pNode;
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// element iterators
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typedef SMDS_SetIterator< SMDS_pElement, std::vector< SMDS_pElement >::const_iterator>
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SMDS_ElementVectorIterator;
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typedef SMDS_SetIterator< SMDS_pElement, SMDS_pElement const *>
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SMDS_ElementArrayIterator;
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typedef SMDS_SetIterator< SMDS_pElement, std::vector< SMDS_pNode >::const_iterator>
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SMDS_NodeVectorElemIterator;
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typedef SMDS_SetIterator< SMDS_pElement, SMDS_pNode const * >
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SMDS_NodeArrayElemIterator;
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// node iterators
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typedef SMDS_SetIterator< SMDS_pNode, std::vector< SMDS_pNode >::const_iterator >
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SMDS_NodeVectorIterator;
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typedef SMDS_SetIterator< SMDS_pNode, SMDS_pNode const * >
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SMDS_NodeArrayIterator;
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#endif
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