jtabwbx.modal.btformula

Class BTModalFormulaProposition

java.lang.Object

jtabwbx.modal.btformula.BTModalFormula

jtabwbx.modal.btformula.BTModalFormulaProposition

All Implemented Interfaces:

_AbstractFormula, _ModalFormula

public class BTModalFormulaProposition
extends BTModalFormula

An instance of this class models an atomic formula (a proposition).

Author:

Mauro Ferrari

Field Summary

Fields

Modifier and Type	Field and Description
static BTModalFormulaProposition	FALSE The formula representing the FALSE constant, its name is "false".
static BTModalFormulaProposition	TRUE The formula representing the true constant, its name is "true".

Constructor Summary

Constructors

Constructor and Description
BTModalFormulaProposition(java.lang.String name) Builds the atomic formula with the specified name.

Method Summary

Modifier and Type	Method and Description
BTModalFormula	convertToCNF()
boolean	equals(BTModalFormulaProposition prop) Returns true iff this formula proposition and the one referenced by prop have the same name.
boolean	equals(java.lang.Object obj)
java.lang.String	getName()
int	hashCode()
BTModalFormula[]	immediateSubformulas() The immediate subformulas of this formula.
boolean	isAtomic() Returns true iff this formula is atomic.
boolean	isCompound() Returns true iff this formula is compound.
ModalConnective	mainConnective() The main logical operator of this formula.
java.lang.String	shortName() Returns the short name of the formula.
java.lang.String	toString()

Methods inherited from class jtabwbx.modal.btformula.BTModalFormula

forceParenthesis, format

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Field Detail

TRUE

public static final BTModalFormulaProposition TRUE

The formula representing the true constant, its name is "true".

FALSE

public static final BTModalFormulaProposition FALSE

The formula representing the FALSE constant, its name is "false".

Constructor Detail

BTModalFormulaProposition

public BTModalFormulaProposition(java.lang.String name)

Builds the atomic formula with the specified name.

Parameters:

name - the name of the propositional variable

Method Detail

isAtomic

public boolean isAtomic()

Description copied from interface: _ModalFormula

Returns true iff this formula is atomic.

Specified by:

isAtomic in interface _ModalFormula

Specified by:

isAtomic in class BTModalFormula

Returns:

true iff this formula is atomic.

isCompound

public boolean isCompound()

Description copied from interface: _ModalFormula

Returns true iff this formula is compound.

Specified by:

isCompound in interface _ModalFormula

Specified by:

isCompound in class BTModalFormula

Returns:

true iff this formula is compound.

getName

public java.lang.String getName()

mainConnective

public ModalConnective mainConnective()

Description copied from interface: _ModalFormula

The main logical operator of this formula.

Returns:

the main connective of this formula.

immediateSubformulas

public BTModalFormula[] immediateSubformulas()

Description copied from interface: _ModalFormula

The immediate subformulas of this formula.

Specified by:

immediateSubformulas in interface _ModalFormula

Specified by:

immediateSubformulas in class BTModalFormula

Returns:

the subformulas of this formula.

shortName

public java.lang.String shortName()

Description copied from interface: _AbstractFormula

Returns the short name of the formula. It is only used to provide information on the proof-search. Typically the short is the main connective of the formula

Returns:

returns the short name of the formula

equals

public boolean equals(BTModalFormulaProposition prop)

Returns true iff this formula proposition and the one referenced by prop have the same name.

Parameters:

prop - the other formula proposition.

Returns:

true iff the two propositions have the same name.

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

convertToCNF

public BTModalFormula convertToCNF()

Specified by:

convertToCNF in class BTModalFormula