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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- *//* * Main authors: * Jip J. Dekker <jip.dekker@monash.edu> * * Copyright: * Jip J. Dekker, 2018 * * 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 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * */
#include "lastval.hh"
namespace Gecode { namespace FlatZinc {
LastVal::LastVal(Space &home, LastVal &p) : UnaryPropagator<IntView, PC_INT_VAL>(home,p), s(p.s) {}
LastVal::LastVal(Home home, Int::IntView x0, std::shared_ptr<int> s) : s(s), UnaryPropagator<IntView, PC_INT_VAL>(home, x0) { (*s) = x0.min(); }
Actor* LastVal::copy(Space &home) { return new (home) LastVal(home,*this); }
PropCost LastVal::cost(const Space &home, const ModEventDelta &med) const { return PropCost::record(); }
ExecStatus LastVal::propagate(Space &home, const ModEventDelta &med) { assert(x0.assigned()); (*s) = x0.val(); return home.ES_SUBSUMED(*this); }
ExecStatus LastVal::post(Home home, Int::IntView x0, std::shared_ptr<int> s) { if (x0.assigned()) { (*s) = x0.val(); } else { (void) new (home) LastVal(home, x0, s); } return ES_OK; }
}}