Jip J. Dekker
981be2067e
git-subtree-dir: software/gecode_on_replay git-subtree-split: 8051d92b9c89e49cccfbd1c201371580d7703ab4
115 lines
3.3 KiB
C++
115 lines
3.3 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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* Christian Schulte <schulte@gecode.org>
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*
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* Copyright:
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* Christian Schulte, 2008
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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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#ifndef GECODE_SEARCH_SUPPORT_HH
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#define GECODE_SEARCH_SUPPORT_HH
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#include <gecode/search.hh>
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namespace Gecode { namespace Search {
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/// Clone space \a s dependening on options \a o
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forceinline Space*
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snapshot(Space* s, const Options& o);
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/// Virtualize a worker to an engine
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template<class Worker>
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class WorkerToEngine : public Engine {
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protected:
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/// The worker to wrap into an engine
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Worker w;
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public:
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/// Initialization
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WorkerToEngine(Space* s, const Options& o);
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/// Return next solution (nullptr, if none exists or search has been stopped)
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virtual Space* next(void);
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/// Return statistics
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virtual Search::Statistics statistics(void) const;
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/// Check whether engine has been stopped
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virtual bool stopped(void) const;
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/// Constrain future solutions to be better than \a b
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virtual void constrain(const Space& b);
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/// Reset engine to restart at space \a s
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virtual void reset(Space* s);
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/// Return no-goods
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virtual NoGoods& nogoods(void);
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};
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forceinline Space*
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snapshot(Space* s, const Options& o) {
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return o.clone ? s->clone() : s;
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}
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template<class Worker>
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WorkerToEngine<Worker>::WorkerToEngine(Space* s, const Options& o)
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: w(s,o) {}
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template<class Worker>
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Space*
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WorkerToEngine<Worker>::next(void) {
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return w.next();
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}
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template<class Worker>
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Search::Statistics
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WorkerToEngine<Worker>::statistics(void) const {
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return w.statistics();
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}
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template<class Worker>
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bool
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WorkerToEngine<Worker>::stopped(void) const {
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return w.stopped();
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}
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template<class Worker>
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void
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WorkerToEngine<Worker>::reset(Space* s) {
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w.reset(s);
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}
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template<class Worker>
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void
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WorkerToEngine<Worker>::constrain(const Space& b) {
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w.constrain(b);
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}
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template<class Worker>
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NoGoods&
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WorkerToEngine<Worker>::nogoods(void) {
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return w.nogoods();
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}
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}}
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#endif
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// STATISTICS: search-other
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