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values-ranges.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: 2010-07-28 17:35:33 +0200 (Wed, 28 Jul 2010) $ by $Author: schulte $
00011  *     $Revision: 11294 $
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 Values {
00039 
00049   template<class I>
00050   class ToRanges : public Ranges::MinMax {
00051   protected:
00053     I i;
00054   public:
00056 
00057 
00058     ToRanges(void);
00060     ToRanges(I& i);
00062     void init(I& i);
00064 
00066 
00067 
00068     void operator ++(void);
00070   };
00071 
00072   template<class I>
00073   forceinline
00074   ToRanges<I>::ToRanges(void) {}
00075 
00076   template<class I>
00077   forceinline void
00078   ToRanges<I>::operator ++(void) {
00079     if (!i()) {
00080       finish(); return;
00081     }
00082     mi = i.val(); ma = i.val();
00083     ++i;
00084     while (i() && (ma+1 >= i.val())) {
00085       ma = i.val(); ++i;
00086     }
00087   }
00088 
00089   template<class I>
00090   forceinline
00091   ToRanges<I>::ToRanges(I& i0)
00092     : i(i0) {
00093     operator ++();
00094   }
00095 
00096   template<class I>
00097   forceinline void
00098   ToRanges<I>::init(I& i0) {
00099     i = i0;
00100     operator ++();
00101   }
00102 
00103 }}}
00104 
00105 // STATISTICS: iter-any
00106