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when.cpp

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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, 2009
00008  *
00009  *  This file is part of Gecode, the generic constraint
00010  *  development environment:
00011  *     http://www.gecode.org
00012  *
00013  *  Permission is hereby granted, free of charge, to any person obtaining
00014  *  a copy of this software and associated documentation files (the
00015  *  "Software"), to deal in the Software without restriction, including
00016  *  without limitation the rights to use, copy, modify, merge, publish,
00017  *  distribute, sublicense, and/or sell copies of the Software, and to
00018  *  permit persons to whom the Software is furnished to do so, subject to
00019  *  the following conditions:
00020  *
00021  *  The above copyright notice and this permission notice shall be
00022  *  included in all copies or substantial portions of the Software.
00023  *
00024  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00025  *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00026  *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00027  *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
00028  *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
00029  *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
00030  *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00031  *
00032  */
00033 
00034 #include <gecode/int/exec.hh>
00035 
00036 namespace Gecode { namespace Int { namespace Exec {
00037 
00038   Actor*
00039   When::copy(Space& home) {
00040     return new (home) When(home,*this);
00041   }
00042 
00043   ExecStatus
00044   When::propagate(Space& home, const ModEventDelta&) {
00045     if (x0.zero()) {
00046       GECODE_VALID_FUNCTION(e());
00047       e()(home);
00048     } else {
00049       assert(x0.one());
00050       GECODE_VALID_FUNCTION(t());
00051       t()(home);
00052     }
00053     if (home.failed())
00054       return ES_FAILED;
00055     return home.ES_SUBSUMED(*this);
00056   }
00057 
00058   size_t
00059   When::dispose(Space& home) {
00060     home.ignore(*this,AP_DISPOSE);
00061     t.~SharedData<std::function<void(Space& home)>>();
00062     e.~SharedData<std::function<void(Space& home)>>();
00063     (void) UnaryPropagator<BoolView,PC_BOOL_VAL>::dispose(home);
00064     return sizeof(*this);
00065   }
00066 
00067 }}}
00068 
00069 // STATISTICS: int-prop
00070