jtabwbx.prop.btformula

Class BTFormulaCompound

java.lang.Object

jtabwbx.prop.btformula.BTFormula

jtabwbx.prop.btformula.BTFormulaCompound

All Implemented Interfaces:

_AbstractFormula, _PropositionalFormula

public class BTFormulaCompound
extends BTFormula

Implementation of a propositional compound formula, that is a formula obtained by combining sub-formulas by means of a propositional connective.

Author:

Mauro Ferrari

Constructor Summary

Constructors

Constructor and Description
BTFormulaCompound(PropositionalConnective mainConnective, BTFormula subformula) Builds the compound formula with the specified unary connective and the specified sub-formula.
BTFormulaCompound(PropositionalConnective mainConnective, BTFormula left, BTFormula right) Builds the compound formula with the specified binary infix connective and the specified sub-formulas.

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object obj)
java.lang.String	format() Returns the string representation of the formula
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

Constructor Detail

BTFormulaCompound

public BTFormulaCompound(PropositionalConnective mainConnective,
                         BTFormula left,
                         BTFormula right)

Builds the compound formula with the specified binary infix connective and the specified sub-formulas. No check is made that the specified connective is binary.

Parameters:

mainConnective - a binary connective.

left - the left sub-formula.

right - the right sub-formula.

BTFormulaCompound

public BTFormulaCompound(PropositionalConnective mainConnective,
                         BTFormula subformula)

Builds the compound formula with the specified unary connective and the specified sub-formula. No check is made that the specified connective is unary.

Parameters:

mainConnective - a unary connective.

subformula - the sub-formula.

Method Detail

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

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.

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.

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.

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

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.