precede.cpp

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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
 *  Main authors:
 *     Christopher Mears <Chris.Mears@monash.edu>
 *
 *  Contributing authors:
 *     Christian Schulte <schulte@gecode.org>
 *
 *  Copyright:
 *     Christopher Mears, 2011
 *     Christian Schulte, 2011
 *
 *  Last modified:
 *     $Date: 2011-07-12 12:49:06 +0200 (Tue, 12 Jul 2011) $ by $Author: tack $
 *     $Revision: 12172 $
 *
 *  This file is part of Gecode, the generic constraint
 *  development environment:
 *     http://www.gecode.org
 *
 *  Permission is hereby granted, free of charge, to any person obtaining
 *  a copy of this software and associated documentation files (the
 *  "Software"), to deal in the Software without restriction, including
 *  without limitation the rights to use, copy, modify, merge, publish,
 *  distribute, sublicense, and/or sell copies of the Software, and to
 *  permit persons to whom the Software is furnished to do so, subject to
 *  the following conditions:
 *
 *  The above copyright notice and this permission notice shall be
 *  included in all copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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 */

#include "test/int.hh"

namespace Test { namespace Int {

   namespace Precede {
            
     class Single : public Test {
     private:
       int s, t;
     public:
       Single(int s0, int t0)
         : Test("Precede::Single::"+str(s0)+"<"+str(t0),8,1,4),
           s(s0), t(t0) {}
       virtual bool solution(const Assignment& x) const {
         int n = x.size();
         for (int i = 0 ; i < n ; i++) {
           if (x[i] == t)
             return false;
           if (x[i] == s)
             return true;
         }
         return true;
       }
       virtual void post(Gecode::Space& home, Gecode::IntVarArray& x) {
         Gecode::precede(home, x, s, t);
       }
     };
     
     class Multi : public Test {
     private:
       Gecode::IntArgs c;
     public:
       Multi(const Gecode::IntArgs& c0)
         : Test("Precede::Multi::"+str(c0),6,1,5), c(c0) {
         contest = CTL_NONE;
       }
       virtual bool solution(const Assignment& x) const {
         for (int j=0; j<c.size()-1; j++)
           for (int i=0; i<x.size(); i++) {
             if (x[i] == c[j+1])
               return false;
             if (x[i] == c[j])
               break;
           }
         return true;
       }
       virtual void post(Gecode::Space& home, Gecode::IntVarArray& x) {
         Gecode::precede(home, x, c);
       }
     };
     
     Single _a(2, 3);
     Single _b(1, 4);

     Multi _c(Gecode::IntArgs(3, 1,2,3));
     Multi _d(Gecode::IntArgs(3, 3,2,1));
     Multi _e(Gecode::IntArgs(4, 4,2,3,1));

   }

}}

// STATISTICS: test-int