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OR-Tools
8.2
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The class IntExpr is the base of all integer expressions in constraint programming.
It contains the basic protocol for an expression:
Definition at line 3836 of file constraint_solver.h.
Public Member Functions | |
IntExpr (Solver *const s) | |
~IntExpr () override | |
virtual int64 | Min () const =0 |
virtual void | SetMin (int64 m)=0 |
virtual int64 | Max () const =0 |
virtual void | SetMax (int64 m)=0 |
virtual void | Range (int64 *l, int64 *u) |
By default calls Min() and Max(), but can be redefined when Min and Max code can be factorized. More... | |
virtual void | SetRange (int64 l, int64 u) |
This method sets both the min and the max of the expression. More... | |
virtual void | SetValue (int64 v) |
This method sets the value of the expression. More... | |
virtual bool | Bound () const |
Returns true if the min and the max of the expression are equal. More... | |
virtual bool | IsVar () const |
Returns true if the expression is indeed a variable. More... | |
virtual IntVar * | Var ()=0 |
Creates a variable from the expression. More... | |
IntVar * | VarWithName (const std::string &name) |
Creates a variable from the expression and set the name of the resulting var. More... | |
virtual void | WhenRange (Demon *d)=0 |
Attach a demon that will watch the min or the max of the expression. More... | |
void | WhenRange (Solver::Closure closure) |
Attach a demon that will watch the min or the max of the expression. More... | |
void | WhenRange (Solver::Action action) |
Attach a demon that will watch the min or the max of the expression. More... | |
virtual void | Accept (ModelVisitor *const visitor) const |
Accepts the given visitor. More... | |
std::string | DebugString () const override |
Solver * | solver () const |
void | FreezeQueue () |
This method freezes the propagation queue. More... | |
void | UnfreezeQueue () |
This method unfreezes the propagation queue. More... | |
void | EnqueueDelayedDemon (Demon *const d) |
This method pushes the demon onto the propagation queue. More... | |
void | EnqueueVar (Demon *const d) |
void | ExecuteAll (const SimpleRevFIFO< Demon * > &demons) |
void | EnqueueAll (const SimpleRevFIFO< Demon * > &demons) |
void | set_action_on_fail (Solver::Action a) |
void | reset_action_on_fail () |
This method clears the failure callback. More... | |
void | set_variable_to_clean_on_fail (IntVar *v) |
Shortcut for variable cleaner. More... | |
virtual std::string | name () const |
Object naming. More... | |
void | set_name (const std::string &name) |
bool | HasName () const |
Returns whether the object has been named or not. More... | |
virtual std::string | BaseName () const |
Returns a base name for automatic naming. More... | |
Definition at line 3838 of file constraint_solver.h.
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inlineoverride |
Definition at line 3839 of file constraint_solver.h.
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virtual |
Accepts the given visitor.
Reimplemented in IntVar, and PiecewiseLinearExpr.
Definition at line 3261 of file constraint_solver.cc.
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virtualinherited |
Returns a base name for automatic naming.
Reimplemented in BooleanVar.
Definition at line 2515 of file constraint_solver.cc.
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inlinevirtual |
Returns true if the min and the max of the expression are equal.
Reimplemented in BooleanVar.
Definition at line 3862 of file constraint_solver.h.
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inlineoverridevirtualinherited |
Reimplemented from BaseObject.
Reimplemented in Constraint, SequenceVar, Assignment, Pack, BooleanVar, IfThenElseCt, PiecewiseLinearExpr, and GlobalVehicleBreaksConstraint.
Definition at line 3172 of file constraint_solver.h.
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inherited |
Definition at line 2521 of file constraint_solver.cc.
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inlineinherited |
This method pushes the demon onto the propagation queue.
It will be processed directly if the queue is empty. It will be enqueued according to its priority otherwise.
Definition at line 3192 of file constraint_solver.h.
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inlineinherited |
Definition at line 3193 of file constraint_solver.h.
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inherited |
Definition at line 2517 of file constraint_solver.cc.
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inlineinherited |
This method freezes the propagation queue.
It is useful when you need to apply multiple modifications at once.
Definition at line 3183 of file constraint_solver.h.
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inherited |
Returns whether the object has been named or not.
Definition at line 2513 of file constraint_solver.cc.
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inlinevirtual |
Returns true if the expression is indeed a variable.
Reimplemented in IntVar.
Definition at line 3865 of file constraint_solver.h.
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pure virtual |
Implemented in BooleanVar, and PiecewiseLinearExpr.
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pure virtual |
Implemented in BooleanVar, and PiecewiseLinearExpr.
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virtualinherited |
Object naming.
Reimplemented in PiecewiseLinearExpr.
Definition at line 2505 of file constraint_solver.cc.
By default calls Min() and Max(), but can be redefined when Min and Max code can be factorized.
Definition at line 3848 of file constraint_solver.h.
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inlineinherited |
This method clears the failure callback.
Definition at line 3206 of file constraint_solver.h.
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inlineinherited |
Definition at line 3200 of file constraint_solver.h.
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inherited |
Definition at line 2509 of file constraint_solver.cc.
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inlineinherited |
Shortcut for variable cleaner.
Definition at line 3209 of file constraint_solver.h.
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pure virtual |
Implemented in BooleanVar, and PiecewiseLinearExpr.
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pure virtual |
Implemented in BooleanVar, and PiecewiseLinearExpr.
This method sets both the min and the max of the expression.
Reimplemented in PiecewiseLinearExpr, and BooleanVar.
Definition at line 3853 of file constraint_solver.h.
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inlinevirtual |
This method sets the value of the expression.
Definition at line 3859 of file constraint_solver.h.
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inlineinherited |
Definition at line 3179 of file constraint_solver.h.
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inlineinherited |
This method unfreezes the propagation queue.
All modifications that happened when the queue was frozen will be processed.
Definition at line 3187 of file constraint_solver.h.
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pure virtual |
Creates a variable from the expression.
Implemented in IntVar, and BaseIntExpr.
IntVar * VarWithName | ( | const std::string & | name | ) |
Creates a variable from the expression and set the name of the resulting var.
If the expression is already a variable, then it will set the name of the expression, possibly overwriting it. This is just a shortcut to Var() followed by set_name().
Definition at line 49 of file expressions.cc.
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pure virtual |
Attach a demon that will watch the min or the max of the expression.
Implemented in BooleanVar, and PiecewiseLinearExpr.
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inline |
Attach a demon that will watch the min or the max of the expression.
Definition at line 3885 of file constraint_solver.h.
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inline |
Attach a demon that will watch the min or the max of the expression.
Definition at line 3879 of file constraint_solver.h.