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ranges-values.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 ToValues {
00047   private:
00049     IsRangeIter<I> _checkI;
00050   protected:
00052     I i;
00054     int cur;
00056     int max;
00058     void start(void);
00059   public:
00061 
00062 
00063     ToValues(void);
00065     ToValues(I& i);
00067     void init(I& i);
00069 
00071 
00072 
00073     bool operator ()(void) const;
00075     void operator ++(void);
00077 
00079 
00080 
00081     int  val(void) const;
00083   };
00084 
00085 
00086 
00087   template<class I>
00088   forceinline
00089   ToValues<I>::ToValues(void) {}
00090 
00091   template<class I>
00092   forceinline void
00093   ToValues<I>::start(void) {
00094     if (i()) {
00095       cur = i.min(); max = i.max();
00096     } else {
00097       cur = 1;       max = 0;
00098     }
00099   }
00100 
00101   template<class I>
00102   forceinline
00103   ToValues<I>::ToValues(I& i0)
00104     : i(i0) {
00105     start();
00106   }
00107 
00108   template<class I>
00109   forceinline void
00110   ToValues<I>::init(I& i0) {
00111     i = i0;
00112     start();
00113   }
00114 
00115 
00116   template<class I>
00117   forceinline bool
00118   ToValues<I>::operator ()(void) const {
00119     return (cur <= max);
00120   }
00121 
00122   template<class I>
00123   forceinline void
00124   ToValues<I>::operator ++(void) {
00125     ++cur;
00126     if (cur > max) {
00127       ++i;
00128       if (i()) {
00129         cur = i.min(); max = i.max();
00130       }
00131     }
00132   }
00133 
00134   template<class I>
00135   forceinline int
00136   ToValues<I>::val(void) const {
00137     return cur;
00138   }
00139 
00140 }}}
00141 
00142 // STATISTICS: iter-any
00143