Detailed Description

A Demon is the base element of a propagation queue.

It is the main object responsible for implementing the actual propagation of the constraint and pruning the inconsistent values in the domains of the variables. The main concept is that demons are listeners that are attached to the variables and listen to their modifications. There are two methods:

Run() is the actual method called when the demon is processed.
priority() returns its priority. Standard priorities are slow, normal or fast. "immediate" is reserved for variables and is treated separately.

Definition at line 3303 of file constraint_solver.h.

Public Member Functions
	Demon ()
	This indicates the priority of a demon. More...

	~Demon () override

virtual void	Run (Solver *const s)=0
	This is the main callback of the demon. More...

virtual Solver::DemonPriority	priority () const
	This method returns the priority of the demon. More...

std::string	DebugString () const override

void	inhibit (Solver *const s)
	This method inhibits the demon in the search tree below the current position. More...

void	desinhibit (Solver *const s)
	This method un-inhibits the demon that was previously inhibited. More...

Constructor & Destructor Documentation

◆ Demon()

Demon ( )

inline

This indicates the priority of a demon.

Immediate demons are treated separately and corresponds to variables.

Definition at line 3307 of file constraint_solver.h.

◆ ~Demon()

~Demon ( )

inlineoverride

Definition at line 3308 of file constraint_solver.h.

Member Function Documentation

◆ DebugString()

std::string DebugString ( ) const

overridevirtual

Reimplemented from BaseObject.

Reimplemented in DelayedCallMethod2< T, P, Q >, DelayedCallMethod1< T, P >, DelayedCallMethod0< T >, CallMethod3< T, P, Q, R >, CallMethod2< T, P, Q >, CallMethod1< T, P >, CallMethod0< T >, SwigDirector_Demon, and SwigDirector_Demon.

Definition at line 200 of file constraint_solver.cc.

◆ desinhibit()

void desinhibit ( Solver *const s )

This method un-inhibits the demon that was previously inhibited.

Definition at line 208 of file constraint_solver.cc.

◆ inhibit()

void inhibit ( Solver *const s )

This method inhibits the demon in the search tree below the current position.

Definition at line 202 of file constraint_solver.cc.

◆ priority()

Solver::DemonPriority priority ( ) const

virtual

This method returns the priority of the demon.

Usually a demon is fast, slow or normal. Immediate demons are reserved for internal use to maintain variables.

Reimplemented in DelayedCallMethod2< T, P, Q >, DelayedCallMethod1< T, P >, DelayedCallMethod0< T >, SwigDirector_Demon, and SwigDirector_Demon.

Definition at line 196 of file constraint_solver.cc.

◆ Run()

virtual void Run ( Solver *const s )

pure virtual

This is the main callback of the demon.

Implemented in DelayedCallMethod2< T, P, Q >, DelayedCallMethod1< T, P >, DelayedCallMethod0< T >, CallMethod3< T, P, Q, R >, CallMethod2< T, P, Q >, CallMethod1< T, P >, CallMethod0< T >, SwigDirector_Demon, and SwigDirector_Demon.

The documentation for this class was generated from the following files: