136 lines
3.9 KiB
C++
Executable File
136 lines
3.9 KiB
C++
Executable File
/* -*- 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, 2003
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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 Count {
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template<class VX, class VY, class VZ>
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forceinline
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ViewBase<VX,VY,VZ>::ViewBase(Home home,
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ViewArray<VX>& x0, VY y0, VZ z0, int c0)
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: Propagator(home), x(x0), y(y0), z(z0), c(c0) {
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if (isintset(y))
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home.notice(*this,AP_DISPOSE);
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x.subscribe(home,*this,PC_INT_DOM);
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subscribe(home,*this,y);
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z.subscribe(home,*this,PC_INT_BND);
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}
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template<class VX, class VY, class VZ>
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forceinline
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ViewBase<VX,VY,VZ>::ViewBase(Space& home, ViewBase<VX,VY,VZ>& p)
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: Propagator(home,p), c(p.c) {
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x.update(home,p.x);
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update(y,home,p.y);
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z.update(home,p.z);
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}
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template<class VX, class VY, class VZ>
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PropCost
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ViewBase<VX,VY,VZ>::cost(const Space&, const ModEventDelta&) const {
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return PropCost::linear(PropCost::LO,x.size()+1);
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}
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template<class VX, class VY, class VZ>
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void
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ViewBase<VX,VY,VZ>::reschedule(Space& home) {
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x.reschedule(home,*this,PC_INT_DOM);
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Gecode::Int::Count::reschedule(home,*this,y);
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z.reschedule(home,*this,PC_INT_BND);
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}
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template<class VX, class VY, class VZ>
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forceinline size_t
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ViewBase<VX,VY,VZ>::dispose(Space& home) {
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if (isintset(y))
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home.ignore(*this,AP_DISPOSE);
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x.cancel(home,*this,PC_INT_DOM);
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cancel(home,*this,y);
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z.cancel(home,*this,PC_INT_BND);
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(void) Propagator::dispose(home);
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return sizeof(*this);
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}
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template<class VX, class VY, class VZ>
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forceinline void
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ViewBase<VX,VY,VZ>::count(Space& home) {
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int n = x.size();
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for (int i=n; i--; )
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switch (holds(x[i],y)) {
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case RT_FALSE:
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x[i].cancel(home,*this,PC_INT_DOM); x[i]=x[--n];
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break;
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case RT_TRUE:
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x[i].cancel(home,*this,PC_INT_DOM); x[i]=x[--n];
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c--;
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break;
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case RT_MAYBE:
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break;
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default:
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GECODE_NEVER;
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}
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x.size(n);
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}
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template<class VX, class VY, class VZ>
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forceinline int
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ViewBase<VX,VY,VZ>::atleast(void) const {
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return -c;
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}
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template<class VX, class VY, class VZ>
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forceinline int
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ViewBase<VX,VY,VZ>::atmost(void) const {
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return x.size()-c;
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}
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template<class VX>
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forceinline bool
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shared(const IntSet&, VX) {
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return false;
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}
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template<class VX, class VY, class VZ>
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forceinline bool
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ViewBase<VX,VY,VZ>::sharing(const ViewArray<VX>& x,
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const VY& y, const VZ& z) {
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if (shared(y,z))
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return true;
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for (int i=0; i<x.size(); i++)
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if (shared(x[i],z))
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return true;
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return false;
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}
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}}}
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// STATISTICS: int-prop
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