jtabwbx.prop.btformula

Class BTFormulaProposition

java.lang.Object

jtabwbx.prop.btformula.BTFormula

jtabwbx.prop.btformula.BTFormulaProposition

All Implemented Interfaces:

_AbstractFormula, _PropositionalFormula

public class BTFormulaProposition
extends BTFormula

Implementation of a propositional variable (an atomic formula).

Author:

Mauro Ferrari

Field Summary

Fields

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

Constructor Summary

Constructors

Constructor and Description
BTFormulaProposition(java.lang.String name)

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object obj) Two propositional formulas are equals if they have the same name.
java.lang.String	format() Returns the string representation of the formula
java.lang.String	getName()
BTFormula[]	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.
PropositionalConnective	mainConnective() The main logical operator of this formula.
java.lang.String	shortName() Returns the short name of the formula.
java.lang.String	toString() Returns the string representation of the formula.

Methods inherited from class java.lang.Object

getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

TRUE

public static final BTFormulaProposition TRUE

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

FALSE

public static final BTFormulaProposition FALSE

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

Constructor Detail

BTFormulaProposition

public BTFormulaProposition(java.lang.String name)

Method Detail

isAtomic

public boolean isAtomic()

Description copied from interface: _PropositionalFormula

Returns true iff this formula is atomic.

Returns:

true iff this formula is atomic.

isCompound

public boolean isCompound()

Description copied from interface: _PropositionalFormula

Returns true iff this formula is compound.

Returns:

true iff this formula is compound.

mainConnective

public PropositionalConnective mainConnective()

Description copied from interface: _PropositionalFormula

The main logical operator of this formula.

Specified by:

mainConnective in interface _PropositionalFormula

Specified by:

mainConnective in class BTFormula

Returns:

the main connective of this formula.

immediateSubformulas

public BTFormula[] immediateSubformulas()

Description copied from interface: _PropositionalFormula

The immediate subformulas of this formula.

Specified by:

immediateSubformulas in interface _PropositionalFormula

Specified by:

immediateSubformulas in class BTFormula

Returns:

the subformulas of this formula.

getName

public java.lang.String getName()

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

format

public java.lang.String format()

Description copied from interface: _AbstractFormula

Returns the string representation of the formula

Returns:

the string describing the formula

equals

public boolean equals(java.lang.Object obj)

Two propositional formulas are equals if they have the same name.

Overrides:

equals in class java.lang.Object

Parameters:

obj - the object to compare with this propositional formula.

Returns:

true if and only if the propositional formulas have the same name.

toString

public java.lang.String toString()

Returns the string representation of the formula.

Overrides:

toString in class java.lang.Object

Returns:

string representing the formula.