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val-sel-commit.hpp
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1 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2 /*
3  * Main author:
4  * Christian Schulte <schulte@gecode.org>
5  *
6  * Copyright:
7  * Christian Schulte, 2012
8  *
9  * This file is part of Gecode, the generic constraint
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11  * http://www.gecode.org
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33 
34 namespace Gecode {
35 
43  template<class _View, class _Val>
45  public:
47  typedef _View View;
49  typedef typename View::VarType Var;
51  typedef _Val Val;
52  public:
58  virtual Val val(const Space& home, View x, int i) = 0;
60  virtual ModEvent commit(Space& home, unsigned int a,
61  View x, int i, Val n) = 0;
63  virtual NGL* ngl(Space& home, unsigned int a,
64  View x, Val n) const = 0;
66  virtual void print(const Space& home, unsigned int a,
67  View x, int i, const Val& n,
68  std::ostream& o) const = 0;
70  virtual ValSelCommitBase<View,Val>* copy(Space& home) = 0;
72  virtual bool notice(void) const = 0;
74  virtual void dispose(Space& home) = 0;
76  virtual ~ValSelCommitBase(void);
78 
79  static void* operator new(size_t s, Space& home);
82  static void operator delete(void* p, Space& home);
84  static void operator delete(void* p);
86  };
87 
89  template<class ValSel, class ValCommit>
91  : public ValSelCommitBase<typename ValSel::View,typename ValSel::Val> {
92  protected:
93  typedef typename ValSelCommitBase<typename ValSel::View,
94  typename ValSel::Val>::Var Var;
95  typedef typename ValSelCommitBase<typename ValSel::View,
96  typename ValSel::Val>::Val Val;
97  typedef typename ValSelCommitBase<typename ValSel::View,
103  public:
105  ValSelCommit(Space& home, const ValBranch<Var>& vb);
109  virtual Val val(const Space& home, View x, int i);
111  virtual ModEvent commit(Space& home, unsigned int a, View x, int i, Val n);
113  virtual NGL* ngl(Space& home, unsigned int a,
114  View x, Val n) const;
116  virtual void print(const Space& home, unsigned int a,
117  View x, int i, const Val& n,
118  std::ostream& o) const;
120  virtual ValSelCommit<ValSel,ValCommit>* copy(Space& home);
122  virtual bool notice(void) const;
124  virtual void dispose(Space& home);
125  };
127 
128 
129  template<class View, class Val>
132  const ValBranch<Var>&) {}
133  template<class View, class Val>
137  template<class View, class Val>
139 
140  template<class View, class Val>
141  forceinline void
143  template<class View, class Val>
144  forceinline void
146  template<class View, class Val>
147  forceinline void*
149  return home.ralloc(s);
150  }
151 
152 
153 
154 
155  template<class ValSel, class ValCommit>
158  const ValBranch<Var>& vb)
159  : ValSelCommitBase<View,Val>(home,vb), s(home,vb), c(home,vb) {}
160 
161  template<class ValSel, class ValCommit>
165  : ValSelCommitBase<View,Val>(home,vsc),
166  s(home,vsc.s), c(home,vsc.c) {}
167 
168  template<class ValSel, class ValCommit>
171  return s.val(home,x,i);
172  }
173 
174  template<class ValSel, class ValCommit>
175  ModEvent
177  View x, int i, Val n) {
178  return c.commit(home,a,x,i,n);
179  }
180 
181  template<class ValSel, class ValCommit>
182  NGL*
184  View x, Val n) const {
185  return c.ngl(home, a, x, n);
186  }
187 
188  template<class ValSel, class ValCommit>
189  void
190  ValSelCommit<ValSel,ValCommit>::print(const Space& home, unsigned int a,
191  View x, int i, const Val& n,
192  std::ostream& o) const {
193  c.print(home,a,x,i,n,o);
194  }
195 
196  template<class ValSel, class ValCommit>
199  return new (home) ValSelCommit<ValSel,ValCommit>(home,*this);
200  }
201 
202  template<class ValSel, class ValCommit>
203  bool
205  return s.notice() || c.notice();
206  }
207 
208  template<class ValSel, class ValCommit>
209  void
211  s.dispose(home);
212  c.dispose(home);
213  }
214 
215 }
216 
217 // STATISTICS: kernel-branch
int p
Number of positive literals for node type.
Definition: bool-expr.cpp:232
int n
Number of negative literals for node type.
Definition: bool-expr.cpp:234
Node * x
Pointer to corresponding Boolean expression node.
Definition: bool-expr.cpp:249
struct Gecode::@602::NNF::@65::@67 a
For atomic nodes.
No-good literal recorded during search.
Definition: core.hpp:1340
Computation spaces.
Definition: core.hpp:1742
Value branching information.
Definition: val.hpp:41
Base class for value commit.
Definition: val-commit.hpp:44
Base class for value selection and commit.
virtual ~ValSelCommitBase(void)
Unused destructor.
virtual ModEvent commit(Space &home, unsigned int a, View x, int i, Val n)=0
Commit view x at position i to value n for alternative a.
View::VarType Var
Corresponding variable type.
virtual NGL * ngl(Space &home, unsigned int a, View x, Val n) const =0
Create no-good literal for choice c and alternative a.
virtual Val val(const Space &home, View x, int i)=0
Return value of view x at position i.
virtual ValSelCommitBase< View, Val > * copy(Space &home)=0
Perform cloning.
virtual void dispose(Space &home)=0
Delete value selection.
virtual void print(const Space &home, unsigned int a, View x, int i, const Val &n, std::ostream &o) const =0
Print on o branch for alternative a, view x at position i, and value n.
virtual bool notice(void) const =0
Whether dispose must always be called (that is, notice is needed)
ValSelCommitBase(Space &home, ValSelCommitBase< View, Val > &vsc)
Constructor for cloning.
ValSelCommitBase(Space &home, const ValBranch< Var > &vb)
Constructor for initialization.
Class for value selection and commit.
virtual ValSelCommit< ValSel, ValCommit > * copy(Space &home)
Perform cloning.
ValSelCommitBase< typename ValSel::View, typename ValSel::Val >::Val Val
ValCommit c
The commit object used.
ValSel s
The value selection object used.
virtual void print(const Space &home, unsigned int a, View x, int i, const Val &n, std::ostream &o) const
Print on o branch for alternative a, view x at position i, and value n.
ValSelCommitBase< typename ValSel::View, typename ValSel::Val >::View View
virtual Val val(const Space &home, View x, int i)
Return value of view x at position i.
virtual ModEvent commit(Space &home, unsigned int a, View x, int i, Val n)
Commit view x at position i to value n for alternative a.
ValSelCommitBase< typename ValSel::View, typename ValSel::Val >::Var Var
virtual bool notice(void) const
Whether dispose must always be called (that is, notice is needed)
virtual NGL * ngl(Space &home, unsigned int a, View x, Val n) const
Create no-good literal for choice c and alternative a.
virtual void dispose(Space &home)
Delete value selection.
ValSelCommit(Space &home, const ValBranch< Var > &vb)
Constructor for initialization.
Base class for value selection.
Definition: val-sel.hpp:44
_Val Val
Value type.
Definition: val-sel.hpp:51
_View View
View type.
Definition: val-sel.hpp:47
int ModEvent
Type for modification events.
Definition: core.hpp:62
Gecode::FloatVal c(-8, 8)
Gecode::IntArgs i({1, 2, 3, 4})
#define forceinline
Definition: config.hpp:192