Jip J. Dekker
3e72b0e857
git-subtree-dir: software/gecode_on_record git-subtree-split: 37ed9bda495ea87e63217c19a374b5a93bb0078e
90 lines
2.8 KiB
C++
90 lines
2.8 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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* Christian Schulte <schulte@gecode.org>
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*
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* Copyright:
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* Christian Schulte, 2009
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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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namespace Gecode { namespace Int { namespace Unary {
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// Overload checking for mandatory tasks
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template<class ManTask>
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ExecStatus
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overload(TaskArray<ManTask>& t) {
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TaskViewArray<typename TaskTraits<ManTask>::TaskViewFwd> f(t);
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sort<typename TaskTraits<ManTask>::TaskViewFwd,STO_LCT,true>(f);
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Region r;
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OmegaTree<typename TaskTraits<ManTask>::TaskViewFwd> o(r,f);
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for (int i=0; i<f.size(); i++) {
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o.insert(i);
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if (o.ect() > f[i].lct())
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return ES_FAILED;
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}
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return ES_OK;
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}
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// Overload checking for optional tasks
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template<class OptTask, class PL>
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ExecStatus
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overload(Space& home, Propagator& p, TaskArray<OptTask>& t) {
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TaskViewArray<typename TaskTraits<OptTask>::TaskViewFwd> f(t);
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sort<typename TaskTraits<OptTask>::TaskViewFwd,STO_LCT,true>(f);
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Region r;
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OmegaLambdaTree<typename TaskTraits<OptTask>::TaskViewFwd> ol(r,f,false);
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bool to_purge = false;
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for (int i=0; i<f.size(); i++) {
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if (f[i].optional()) {
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ol.linsert(i);
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} else if (f[i].mandatory()) {
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ol.oinsert(i);
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if (ol.ect() > f[i].lct())
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return ES_FAILED;
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}
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while (!ol.lempty() && (ol.lect() > f[i].lct())) {
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int j = ol.responsible();
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GECODE_ME_CHECK(f[j].excluded(home));
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ol.lremove(j);
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to_purge = true;
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}
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}
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if (to_purge)
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GECODE_ES_CHECK((purge<OptTask,PL>(home,p,t)));
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return ES_OK;
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}
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}}}
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// STATISTICS: int-prop
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