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ranges-offset.hpp

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00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
00002 /*
00003  *  Main authors:
00004  *     Christian Schulte <schulte@gecode.org>
00005  *
00006  *  Copyright:
00007  *     Christian Schulte, 2004
00008  *
00009  *  Last modified:
00010  *     $Date: 2009-09-08 21:10:29 +0200 (Tue, 08 Sep 2009) $ by $Author: schulte $
00011  *     $Revision: 9692 $
00012  *
00013  *  This file is part of Gecode, the generic constraint
00014  *  development environment:
00015  *     http://www.gecode.org
00016  *
00017  *  Permission is hereby granted, free of charge, to any person obtaining
00018  *  a copy of this software and associated documentation files (the
00019  *  "Software"), to deal in the Software without restriction, including
00020  *  without limitation the rights to use, copy, modify, merge, publish,
00021  *  distribute, sublicense, and/or sell copies of the Software, and to
00022  *  permit persons to whom the Software is furnished to do so, subject to
00023  *  the following conditions:
00024  *
00025  *  The above copyright notice and this permission notice shall be
00026  *  included in all copies or substantial portions of the Software.
00027  *
00028  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00029  *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00030  *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00031  *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
00032  *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
00033  *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
00034  *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00035  *
00036  */
00037 
00038 namespace Gecode { namespace Iter { namespace Ranges {
00039 
00045   template<class I>
00046   class Offset {
00047   private:
00049     IsRangeIter<I> _checkI;
00050   protected:
00052     I i;
00054     int c;
00055   public:
00057 
00058 
00059     Offset(void);
00061     Offset(I& i, int c);
00063     void init(I& i, int c);
00065 
00067 
00068 
00069     bool operator ()(void) const;
00071     void operator ++(void);
00073 
00075 
00076 
00077     int min(void) const;
00079     int max(void) const;
00081     unsigned int width(void) const;
00083   };
00084 
00085 
00086   template<class I>
00087   forceinline
00088   Offset<I>::Offset(void) {}
00089 
00090   template<class I>
00091   inline void
00092   Offset<I>::init(I& i0, int c0) {
00093     i = i0; c = c0;
00094   }
00095 
00096   template<class I>
00097   inline
00098   Offset<I>::Offset(I& i0, int c0) : i(i0), c(c0) {}
00099 
00100   template<class I>
00101   forceinline void
00102   Offset<I>::operator ++(void) {
00103     ++i;
00104   }
00105   template<class I>
00106   forceinline bool
00107   Offset<I>::operator ()(void) const {
00108     return i();
00109   }
00110 
00111   template<class I>
00112   forceinline int
00113   Offset<I>::min(void) const {
00114     return i.min()+c;
00115   }
00116   template<class I>
00117   forceinline int
00118   Offset<I>::max(void) const {
00119     return i.max()+c;
00120   }
00121   template<class I>
00122   forceinline unsigned int
00123   Offset<I>::width(void) const {
00124     return i.width();
00125   }
00126 
00127 }}}
00128 
00129 // STATISTICS: iter-any
00130