Jip J. Dekker
981be2067e
git-subtree-dir: software/gecode_on_replay git-subtree-split: 8051d92b9c89e49cccfbd1c201371580d7703ab4
72 lines
2.3 KiB
C++
72 lines
2.3 KiB
C++
/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
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/*
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* Main authors:
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* Jip J. Dekker <jip.dekker@monash.edu>
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*
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* Copyright:
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* Jip J. Dekker, 2018
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*
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* This file is part of Gecode, the generic constraint
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* development environment:
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* http://www.gecode.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include "lastval.hh"
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namespace Gecode { namespace FlatZinc {
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LastVal::LastVal(Space &home, LastVal &p)
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: UnaryPropagator<IntView, PC_INT_VAL>(home,p), s(p.s) {}
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LastVal::LastVal(Home home, Int::IntView x0, std::shared_ptr<int> s)
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: s(s), UnaryPropagator<IntView, PC_INT_VAL>(home, x0) {
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(*s) = x0.min();
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}
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Actor* LastVal::copy(Space &home) {
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return new (home) LastVal(home,*this);
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}
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PropCost LastVal::cost(const Space &home, const ModEventDelta &med) const {
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return PropCost::record();
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}
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ExecStatus LastVal::propagate(Space &home, const ModEventDelta &med) {
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assert(x0.assigned());
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(*s) = x0.val();
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return home.ES_SUBSUMED(*this);
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}
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ExecStatus LastVal::post(Home home, Int::IntView x0, std::shared_ptr<int> s) {
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if (x0.assigned()) {
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(*s) = x0.val();
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} else {
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(void) new (home) LastVal(home, x0, s);
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}
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return ES_OK;
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}
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}}
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