343 lines
11 KiB
C++
343 lines
11 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, 2002
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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 {
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/**
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* \defgroup TaskPropRePat Reified propagator patterns
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*
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* \ingroup TaskActor
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*/
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//@{
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/**
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* \brief Reified unary propagator
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*
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* Stores single view of type \a View with propagation condition \a pc
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* and a Boolean control view of type \a CtrlView.
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*
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* If the propagation condition \a pc has the value PC_GEN_NONE, no
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* subscriptions are created for \a View.
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*
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*/
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template<class View, PropCond pc, class CtrlView>
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class ReUnaryPropagator : public Propagator {
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protected:
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/// Single view
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View x0;
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/// Boolean control view
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CtrlView b;
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/// Constructor for cloning \a p
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ReUnaryPropagator(Space& home, ReUnaryPropagator& p);
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/// Constructor for rewriting \a p during cloning
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ReUnaryPropagator(Space& home, Propagator& p,
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View x0, CtrlView b);
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/// Constructor for creation
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ReUnaryPropagator(Home home, View x0, CtrlView b);
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public:
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/// Cost function (defined as low unary)
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virtual PropCost cost(const Space& home, const ModEventDelta& med) const;
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/// Schedule function
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virtual void reschedule(Space& home);
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/// Delete propagator and return its size
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virtual size_t dispose(Space& home);
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};
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/**
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* \brief Reified binary propagator
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*
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* Stores two views of type \a View with propagation condition \a pc
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* and a Boolean control view of type \a CtrlView.
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*
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* If the propagation condition \a pc has the value PC_GEN_NONE, no
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* subscriptions are created for \a View.
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*
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*/
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template<class View, PropCond pc, class CtrlView>
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class ReBinaryPropagator : public Propagator {
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protected:
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/// Two views
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View x0, x1;
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/// Boolean control view
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CtrlView b;
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/// Constructor for cloning \a p
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ReBinaryPropagator(Space& home, ReBinaryPropagator& p);
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/// Constructor for rewriting \a p during cloning
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ReBinaryPropagator(Space& home, Propagator& p,
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View x0, View x1, CtrlView b);
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/// Constructor for creation
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ReBinaryPropagator(Home home, View x0, View x1, CtrlView b);
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public:
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/// Cost function (defined as low binary)
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virtual PropCost cost(const Space& home, const ModEventDelta& med) const;
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/// Schedule function
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virtual void reschedule(Space& home);
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/// Delete propagator and return its size
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virtual size_t dispose(Space& home);
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};
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//@}
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/**
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* \brief Reified mixed binary propagator
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*
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* Stores two views of type \a View0 and \a View1 with propagation
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* conditions \a pc0 and \a pc1 and a Boolean control view of type
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* \a CtrlView.
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*
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* If the propagation conditions \a pc0 or \a pc1 have the values
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* PC_GEN_NONE, no subscriptions are created.
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*
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*/
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template<class View0, PropCond pc0, class View1, PropCond pc1,
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class CtrlView>
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class ReMixBinaryPropagator : public Propagator {
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protected:
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/// View of type \a View0
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View0 x0;
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/// View of type \a View1
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View1 x1;
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/// Boolean control view
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CtrlView b;
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/// Constructor for cloning \a p
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ReMixBinaryPropagator(Space& home, ReMixBinaryPropagator& p);
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/// Constructor for creation
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ReMixBinaryPropagator(Home home, View0 x0, View1 x1, CtrlView b);
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/// Constructor for rewriting \a p during cloning
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ReMixBinaryPropagator(Space& home, Propagator& p,
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View0 x0, View1 x1, CtrlView b);
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public:
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/// Cost function (defined as low binary)
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virtual PropCost cost(const Space& home, const ModEventDelta& med) const;
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/// Schedule function
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virtual void reschedule(Space& home);
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/// Delete propagator and return its size
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virtual size_t dispose(Space& home);
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};
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/*
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* Reified unary propagators
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*
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*/
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template<class View, PropCond pc, class CtrlView>
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ReUnaryPropagator<View,pc,CtrlView>::ReUnaryPropagator
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(Home home, View y0, CtrlView b0)
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: Propagator(home), x0(y0), b(b0) {
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if (pc != PC_GEN_NONE)
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x0.subscribe(home,*this,pc);
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b.subscribe(home,*this,Int::PC_INT_VAL);
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}
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template<class View, PropCond pc, class CtrlView>
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forceinline
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ReUnaryPropagator<View,pc,CtrlView>::ReUnaryPropagator
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(Space& home, ReUnaryPropagator<View,pc,CtrlView>& p)
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: Propagator(home,p) {
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x0.update(home,p.x0);
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b.update(home,p.b);
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}
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template<class View, PropCond pc, class CtrlView>
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forceinline
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ReUnaryPropagator<View,pc,CtrlView>::ReUnaryPropagator
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(Space& home, Propagator& p, View y0, CtrlView b0)
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: Propagator(home,p) {
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x0.update(home,y0);
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b.update(home,b0);
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}
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template<class View, PropCond pc, class CtrlView>
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PropCost
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ReUnaryPropagator<View,pc,CtrlView>::cost(const Space&, const ModEventDelta&) const {
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return PropCost::unary(PropCost::LO);
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}
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template<class View, PropCond pc, class CtrlView>
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void
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ReUnaryPropagator<View,pc,CtrlView>::reschedule(Space& home) {
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if (pc != PC_GEN_NONE)
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x0.reschedule(home,*this,pc);
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b.reschedule(home,*this,Int::PC_INT_VAL);
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}
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template<class View, PropCond pc, class CtrlView>
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forceinline size_t
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ReUnaryPropagator<View,pc,CtrlView>::dispose(Space& home) {
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if (pc != PC_GEN_NONE)
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x0.cancel(home,*this,pc);
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b.cancel(home,*this,Int::PC_INT_VAL);
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(void) Propagator::dispose(home);
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return sizeof(*this);
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}
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/*
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* Reified binary propagators
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*
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*/
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template<class View, PropCond pc, class CtrlView>
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ReBinaryPropagator<View,pc,CtrlView>::ReBinaryPropagator
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(Home home, View y0, View y1, CtrlView b1)
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: Propagator(home), x0(y0), x1(y1), b(b1) {
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if (pc != PC_GEN_NONE) {
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x0.subscribe(home,*this,pc);
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x1.subscribe(home,*this,pc);
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}
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b.subscribe(home,*this,Int::PC_INT_VAL);
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}
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template<class View, PropCond pc, class CtrlView>
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forceinline
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ReBinaryPropagator<View,pc,CtrlView>::ReBinaryPropagator
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(Space& home, ReBinaryPropagator<View,pc,CtrlView>& p)
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: Propagator(home,p) {
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x0.update(home,p.x0);
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x1.update(home,p.x1);
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b.update(home,p.b);
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}
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template<class View, PropCond pc, class CtrlView>
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forceinline
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ReBinaryPropagator<View,pc,CtrlView>::ReBinaryPropagator
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(Space& home, Propagator& p, View y0, View y1, CtrlView b0)
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: Propagator(home,p) {
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x0.update(home,y0);
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x1.update(home,y1);
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b.update(home,b0);
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}
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template<class View, PropCond pc, class CtrlView>
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PropCost
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ReBinaryPropagator<View,pc,CtrlView>::cost(const Space&, const ModEventDelta&) const {
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return PropCost::binary(PropCost::LO);
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}
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template<class View, PropCond pc, class CtrlView>
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void
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ReBinaryPropagator<View,pc,CtrlView>::reschedule(Space& home) {
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if (pc != PC_GEN_NONE) {
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x0.reschedule(home,*this,pc);
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x1.reschedule(home,*this,pc);
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}
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b.reschedule(home,*this,Int::PC_INT_VAL);
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}
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template<class View, PropCond pc, class CtrlView>
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forceinline size_t
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ReBinaryPropagator<View,pc,CtrlView>::dispose(Space& home) {
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if (pc != PC_GEN_NONE) {
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x0.cancel(home,*this,pc);
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x1.cancel(home,*this,pc);
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}
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b.cancel(home,*this,Int::PC_INT_VAL);
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(void) Propagator::dispose(home);
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return sizeof(*this);
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}
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/*
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* Reified mixed binary propagator
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*
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*/
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template<class View0, PropCond pc0, class View1, PropCond pc1,
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class CtrlView>
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ReMixBinaryPropagator<View0,pc0,View1,pc1,CtrlView>
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::ReMixBinaryPropagator(Home home, View0 y0, View1 y1, CtrlView b1)
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: Propagator(home), x0(y0), x1(y1), b(b1) {
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if (pc0 != PC_GEN_NONE)
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x0.subscribe(home,*this,pc0);
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if (pc1 != PC_GEN_NONE)
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x1.subscribe(home,*this,pc1);
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b.subscribe(home,*this,Int::PC_INT_VAL);
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}
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template<class View0, PropCond pc0, class View1, PropCond pc1,
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class CtrlView>
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forceinline
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ReMixBinaryPropagator<View0,pc0,View1,pc1,CtrlView>::ReMixBinaryPropagator
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(Space& home,
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ReMixBinaryPropagator<View0,pc0,View1,pc1,CtrlView>& p)
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: Propagator(home,p) {
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x0.update(home,p.x0);
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x1.update(home,p.x1);
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b.update(home,p.b);
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}
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template<class View0, PropCond pc0, class View1, PropCond pc1,
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class CtrlView>
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forceinline
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ReMixBinaryPropagator<View0,pc0,View1,pc1,CtrlView>
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::ReMixBinaryPropagator
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(Space& home, Propagator& p, View0 y0, View1 y1, CtrlView b0)
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: Propagator(home,p) {
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x0.update(home,y0);
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x1.update(home,y1);
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b.update(home,b0);
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}
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template<class View0, PropCond pc0, class View1, PropCond pc1,
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class CtrlView>
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PropCost
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ReMixBinaryPropagator<View0,pc0,View1,pc1,CtrlView>
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::cost(const Space&, const ModEventDelta&) const {
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return PropCost::binary(PropCost::LO);
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}
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template<class View0, PropCond pc0, class View1, PropCond pc1,
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class CtrlView>
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void
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ReMixBinaryPropagator<View0,pc0,View1,pc1,CtrlView>::reschedule(Space& home) {
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if (pc0 != PC_GEN_NONE)
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x0.reschedule(home,*this,pc0);
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if (pc1 != PC_GEN_NONE)
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x1.reschedule(home,*this,pc1);
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b.reschedule(home,*this,Int::PC_INT_VAL);
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}
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template<class View0, PropCond pc0, class View1, PropCond pc1,
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class CtrlView>
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forceinline size_t
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ReMixBinaryPropagator<View0,pc0,View1,pc1,CtrlView>::dispose(Space& home) {
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if (pc0 != PC_GEN_NONE)
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x0.cancel(home,*this,pc0);
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if (pc1 != PC_GEN_NONE)
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x1.cancel(home,*this,pc1);
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b.cancel(home,*this,Int::PC_INT_VAL);
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(void) Propagator::dispose(home);
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return sizeof(*this);
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}
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}}
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// STATISTICS: int-prop
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