123 lines
3.4 KiB
C++
Executable File
123 lines
3.4 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, 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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namespace Gecode {
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/**
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* \brief Base class for variables
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* \ingroup TaskVarView
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*/
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class Var {};
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/**
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* \brief Variables as interfaces to variable implementations
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* \ingroup TaskVarView
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*/
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template<class VarImp>
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class VarImpVar : public Var {
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protected:
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/// Pointer to variable implementation
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VarImp* x;
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/// Default constructor
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VarImpVar(void);
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/// Initialize with variable implementation \a y
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VarImpVar(VarImp* y);
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public:
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/// The variable implementation type corresponding to the variable
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typedef VarImp VarImpType;
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/// \name Generic variable information
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//@{
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/// Return variable implementation of variable
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VarImp* varimp(void) const;
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/// Return degree (number of subscribed propagators and advisors)
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unsigned int degree(void) const;
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/// Return accumulated failure count
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double afc(void) const;
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//@}
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/// \name Domain tests
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//@{
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/// Test whether view is assigned
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bool assigned(void) const;
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//@}
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/// \name Cloning
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//@{
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/// Update this variable to be a clone of variable \a y
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void update(Space& home, VarImpVar<VarImp>& y);
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//@}
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};
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/*
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* Variable: contains a pointer to a variable implementation
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*
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*/
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template<class VarImp>
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forceinline
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VarImpVar<VarImp>::VarImpVar(void)
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: x(nullptr) {}
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template<class VarImp>
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forceinline
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VarImpVar<VarImp>::VarImpVar(VarImp* y)
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: x(y) {}
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template<class VarImp>
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forceinline VarImp*
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VarImpVar<VarImp>::varimp(void) const {
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return x;
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}
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template<class VarImp>
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forceinline unsigned int
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VarImpVar<VarImp>::degree(void) const {
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return x->degree();
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}
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template<class VarImp>
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forceinline double
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VarImpVar<VarImp>::afc(void) const {
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return x->afc();
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}
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template<class VarImp>
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forceinline bool
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VarImpVar<VarImp>::assigned(void) const {
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return x->assigned();
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}
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template<class VarImp>
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forceinline void
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VarImpVar<VarImp>::update(Space& home, VarImpVar<VarImp>& y) {
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x = y.x->copy(home);
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}
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}
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// STATISTICS: kernel-var
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