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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- *//* * Main author: * Christian Schulte <schulte@gecode.org> * * Copyright: * Christian Schulte, 2012 * * This file is part of Gecode, the generic constraint * development environment: * http://www.gecode.org * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * */
namespace Gecode {
/** * \defgroup TaskBranchValCommit Generic value commit for brancher based on view and value selection * * \ingroup TaskBranchViewVal */ //@{ /// Base class for value commit template<class View_, class Val_> class ValCommit { public: /// View type typedef View_ View; /// Corresponding variable type typedef typename View::VarType Var; /// Value type typedef Val_ Val; public: /// Constructor for initialization ValCommit(Space& home, const ValBranch<Var>& vb); /// Constructor for cloning ValCommit(Space& home, ValCommit<View,Val>& vs); /// Whether dispose must always be called (that is, notice is needed) bool notice(void) const; /// Delete value commit void dispose(Space& home); };
/// Class for user-defined value commit template<class View> class ValCommitFunction : public ValCommit<View, typename BranchTraits<typename View::VarType>::ValType> { typedef typename ValCommit<View, typename BranchTraits<typename View::VarType> ::ValType>::Val Val; public: /// The corresponding variable type typedef typename View::VarType Var; /// The corresponding commit function typedef typename BranchTraits<Var>::Commit CommitFunction; protected: /// The user-defined commit function SharedData<CommitFunction> c; public: /// Constructor for initialization ValCommitFunction(Space& home, const ValBranch<Var>& vb); /// Constructor for cloning during copying ValCommitFunction(Space& home, ValCommitFunction& vc); /// Perform user-defined commit ModEvent commit(Space& home, unsigned int a, View x, int i, Val n); /// Create no-good literal for alternative \a a NGL* ngl(Space& home, unsigned int a, View x, Val n) const; /// Print on \a o the alternative \a with view \a x at position \a i and value \a n void print(const Space& home, unsigned int a, View x, int i, const Val& n, std::ostream& o) const; /// Whether dispose must always be called (that is, notice is needed) bool notice(void) const; /// Delete value commit void dispose(Space& home); }; //@}
// Baseclass for value commit template<class View, class Val> forceinline ValCommit<View,Val>::ValCommit(Space&, const ValBranch<Var>&) {} template<class View, class Val> forceinline ValCommit<View,Val>::ValCommit(Space&, ValCommit<View,Val>&) {} template<class View, class Val> forceinline bool ValCommit<View,Val>::notice(void) const { return false; } template<class View, class Val> forceinline void ValCommit<View,Val>::dispose(Space&) {}
// User-defined value selection template<class View> forceinline ValCommitFunction<View>::ValCommitFunction(Space& home, const ValBranch<Var>& vb) : ValCommit<View,Val>(home,vb), c(vb.commit()) { if (!c()) throw InvalidFunction("ValCommitFunction::ValCommitFunction"); } template<class View> forceinline ValCommitFunction<View>::ValCommitFunction(Space& home, ValCommitFunction<View>& vc) : ValCommit<View,Val>(home,vc), c(vc.c) { } template<class View> forceinline ModEvent ValCommitFunction<View>::commit(Space& home, unsigned int a, View x, int i, Val n) { typename View::VarType y(x.varimp()); GECODE_VALID_FUNCTION(c()); c()(home,a,y,i,n); return home.failed() ? ES_FAILED : ES_OK; } template<class View> forceinline NGL* ValCommitFunction<View>::ngl(Space&, unsigned int, View, Val) const { return nullptr; } template<class View> forceinline void ValCommitFunction<View>::print(const Space&, unsigned int, View, int i, const Val&, std::ostream& o) const { o << "var[" << i << "] is user-defined."; } template<class View> forceinline bool ValCommitFunction<View>::notice(void) const { return true; } template<class View> forceinline void ValCommitFunction<View>::dispose(Space&) { c.~SharedData<CommitFunction>(); }
}
// STATISTICS: kernel-branch