Jip J. Dekker
2572df0663
git-subtree-dir: software/gecode_base git-subtree-split: bbefcea214fec798a0f5acc442581984555acd21
218 lines
7.9 KiB
C++
218 lines
7.9 KiB
C++
/* -*- 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 TaskBranchValSelCommit Generic value selection and value commit for brancher based on view and value selection
|
|
*
|
|
* \ingroup TaskBranchViewVal
|
|
*/
|
|
//@{
|
|
/// Base class for value selection and commit
|
|
template<class View_, class Val_>
|
|
class ValSelCommitBase {
|
|
public:
|
|
/// View type
|
|
typedef View_ View;
|
|
/// Corresponding variable type
|
|
typedef typename View::VarType Var;
|
|
/// Value type
|
|
typedef Val_ Val;
|
|
public:
|
|
/// Constructor for initialization
|
|
ValSelCommitBase(Space& home, const ValBranch<Var>& vb);
|
|
/// Constructor for cloning
|
|
ValSelCommitBase(Space& home, ValSelCommitBase<View,Val>& vsc);
|
|
/// Return value of view \a x at position \a i
|
|
virtual Val val(const Space& home, View x, int i) = 0;
|
|
/// Commit view \a x at position \a i to value \a n for alternative \a a
|
|
virtual ModEvent commit(Space& home, unsigned int a,
|
|
View x, int i, Val n) = 0;
|
|
/// Create no-good literal for choice \a c and alternative \a a
|
|
virtual NGL* ngl(Space& home, unsigned int a,
|
|
View x, Val n) const = 0;
|
|
/// Print on \a o branch for alternative \a a, view \a x at position \a i, and value \a n
|
|
virtual void print(const Space& home, unsigned int a,
|
|
View x, int i, const Val& n,
|
|
std::ostream& o) const = 0;
|
|
/// Perform cloning
|
|
virtual ValSelCommitBase<View,Val>* copy(Space& home) = 0;
|
|
/// Whether dispose must always be called (that is, notice is needed)
|
|
virtual bool notice(void) const = 0;
|
|
/// Delete value selection
|
|
virtual void dispose(Space& home) = 0;
|
|
/// Unused destructor
|
|
virtual ~ValSelCommitBase(void);
|
|
/// \name Memory management
|
|
//@{
|
|
/// Allocate memory from space
|
|
static void* operator new(size_t s, Space& home);
|
|
/// Return memory to space
|
|
static void operator delete(void* p, Space& home);
|
|
/// Needed for exceptions
|
|
static void operator delete(void* p);
|
|
//@}
|
|
};
|
|
|
|
/// Class for value selection and commit
|
|
template<class ValSel, class ValCommit>
|
|
class ValSelCommit
|
|
: public ValSelCommitBase<typename ValSel::View,typename ValSel::Val> {
|
|
protected:
|
|
typedef typename ValSelCommitBase<typename ValSel::View,
|
|
typename ValSel::Val>::Var Var;
|
|
typedef typename ValSelCommitBase<typename ValSel::View,
|
|
typename ValSel::Val>::Val Val;
|
|
typedef typename ValSelCommitBase<typename ValSel::View,
|
|
typename ValSel::Val>::View View;
|
|
/// The value selection object used
|
|
ValSel s;
|
|
/// The commit object used
|
|
ValCommit c;
|
|
public:
|
|
/// Constructor for initialization
|
|
ValSelCommit(Space& home, const ValBranch<Var>& vb);
|
|
/// Constructor for cloning
|
|
ValSelCommit(Space& home, ValSelCommit<ValSel,ValCommit>& vsc);
|
|
/// Return value of view \a x at position \a i
|
|
virtual Val val(const Space& home, View x, int i);
|
|
/// Commit view \a x at position \a i to value \a n for alternative \a a
|
|
virtual ModEvent commit(Space& home, unsigned int a, View x, int i, Val n);
|
|
/// Create no-good literal for choice \a c and alternative \a a
|
|
virtual NGL* ngl(Space& home, unsigned int a,
|
|
View x, Val n) const;
|
|
/// Print on \a o branch for alternative \a a, view \a x at position \a i, and value \a n
|
|
virtual void print(const Space& home, unsigned int a,
|
|
View x, int i, const Val& n,
|
|
std::ostream& o) const;
|
|
/// Perform cloning
|
|
virtual ValSelCommit<ValSel,ValCommit>* copy(Space& home);
|
|
/// Whether dispose must always be called (that is, notice is needed)
|
|
virtual bool notice(void) const;
|
|
/// Delete value selection
|
|
virtual void dispose(Space& home);
|
|
};
|
|
//@}
|
|
|
|
|
|
template<class View, class Val>
|
|
forceinline
|
|
ValSelCommitBase<View,Val>::ValSelCommitBase(Space&,
|
|
const ValBranch<Var>&) {}
|
|
template<class View, class Val>
|
|
forceinline
|
|
ValSelCommitBase<View,Val>::
|
|
ValSelCommitBase(Space&, ValSelCommitBase<View,Val>&) {}
|
|
template<class View, class Val>
|
|
ValSelCommitBase<View,Val>::~ValSelCommitBase(void) {}
|
|
|
|
template<class View, class Val>
|
|
forceinline void
|
|
ValSelCommitBase<View,Val>::operator delete(void*) {}
|
|
template<class View, class Val>
|
|
forceinline void
|
|
ValSelCommitBase<View,Val>::operator delete(void*, Space&) {}
|
|
template<class View, class Val>
|
|
forceinline void*
|
|
ValSelCommitBase<View,Val>::operator new(size_t s, Space& home) {
|
|
return home.ralloc(s);
|
|
}
|
|
|
|
|
|
|
|
|
|
template<class ValSel, class ValCommit>
|
|
forceinline
|
|
ValSelCommit<ValSel,ValCommit>::ValSelCommit(Space& home,
|
|
const ValBranch<Var>& vb)
|
|
: ValSelCommitBase<View,Val>(home,vb), s(home,vb), c(home,vb) {}
|
|
|
|
template<class ValSel, class ValCommit>
|
|
forceinline
|
|
ValSelCommit<ValSel,ValCommit>::ValSelCommit(Space& home,
|
|
ValSelCommit<ValSel,ValCommit>& vsc)
|
|
: ValSelCommitBase<View,Val>(home,vsc),
|
|
s(home,vsc.s), c(home,vsc.c) {}
|
|
|
|
template<class ValSel, class ValCommit>
|
|
typename ValSelCommit<ValSel,ValCommit>::Val
|
|
ValSelCommit<ValSel,ValCommit>::val(const Space& home, View x, int i) {
|
|
return s.val(home,x,i);
|
|
}
|
|
|
|
template<class ValSel, class ValCommit>
|
|
ModEvent
|
|
ValSelCommit<ValSel,ValCommit>::commit(Space& home, unsigned int a,
|
|
View x, int i, Val n) {
|
|
return c.commit(home,a,x,i,n);
|
|
}
|
|
|
|
template<class ValSel, class ValCommit>
|
|
NGL*
|
|
ValSelCommit<ValSel,ValCommit>::ngl(Space& home, unsigned int a,
|
|
View x, Val n) const {
|
|
return c.ngl(home, a, x, n);
|
|
}
|
|
|
|
template<class ValSel, class ValCommit>
|
|
void
|
|
ValSelCommit<ValSel,ValCommit>::print(const Space& home, unsigned int a,
|
|
View x, int i, const Val& n,
|
|
std::ostream& o) const {
|
|
c.print(home,a,x,i,n,o);
|
|
}
|
|
|
|
template<class ValSel, class ValCommit>
|
|
ValSelCommit<ValSel,ValCommit>*
|
|
ValSelCommit<ValSel,ValCommit>::copy(Space& home) {
|
|
return new (home) ValSelCommit<ValSel,ValCommit>(home,*this);
|
|
}
|
|
|
|
template<class ValSel, class ValCommit>
|
|
bool
|
|
ValSelCommit<ValSel,ValCommit>::notice(void) const {
|
|
return s.notice() || c.notice();
|
|
}
|
|
|
|
template<class ValSel, class ValCommit>
|
|
void
|
|
ValSelCommit<ValSel,ValCommit>::dispose(Space& home) {
|
|
s.dispose(home);
|
|
c.dispose(home);
|
|
}
|
|
|
|
}
|
|
|
|
// STATISTICS: kernel-branch
|