jtabwbx.prop.formula

Class Formula

java.lang.Object

jtabwbx.prop.formula.Formula

All Implemented Interfaces:

_AbstractFormula, _PropositionalFormula

Direct Known Subclasses:

FormulaProposition

public abstract class Formula
extends java.lang.Object
implements _PropositionalFormula

Formula of this package are realized by objects implementing this interface.

Author:

Lorenzo Bossi

Method Summary

Modifier and Type	Method and Description
abstract Formula	applyIntuitionisticPartialSubstitution(Substitution subst) Returns the formula obtained by applying the specified substitution as intuitionistic partial substitution.
abstract Formula	applySubstitution(PropositionalSubstitution subst) Returns the formula obtained by applying the specified substitution on propositional formulas.
abstract Formula	applySubstitution(Substitution subst) Returns the formula obtained by applying the specified substitution.
abstract Formula	calculateBooleanSimplification() Returns the formula obtained by applying boolean simplifications on this formula.
abstract boolean	containsFalse() Returns true iff this formula contains the propositional constant FALSE as subformula.
abstract boolean	containsTrue() Returns true iff this formula contains the propositional constant TRUE as subfromula.
boolean	equals(java.lang.Object obj)
abstract FormulaFactory	getFactory() Returns the factory used to build this formula.
abstract FormulaType	getFormulaType() Returns the formula type of this formula.
int	getIndex() Returns the index for this formula.
int	hashCode()
abstract Formula[]	immediateSubformulas() The subformulas of this formula.
abstract boolean	isFalse() Returns true iff this formula is the propositional constant FALSE.
abstract boolean	isIntuitionisticLocalFormula() TODO: doc Returns true iff this is a local formula.
abstract boolean	isTrue() Returns true iff this is the propositional constant TRUE.
int	size() Returns the size of this formula.

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface jtabwbx.prop.basic._PropositionalFormula

isAtomic, isCompound, mainConnective

Methods inherited from interface jtabwb.engine._AbstractFormula

format, shortName

Method Detail

getIndex

public int getIndex()

Returns the index for this formula.

Returns:

the index of this formula.

immediateSubformulas

public abstract Formula[] immediateSubformulas()

The subformulas of this formula.

Specified by:

immediateSubformulas in interface _PropositionalFormula

Returns:

the subformulas of this formula.

calculateBooleanSimplification

public abstract Formula calculateBooleanSimplification()

Returns the formula obtained by applying boolean simplifications on this formula. This method is performs caching and optimisation,

Returns:

the simplified formula.

applySubstitution

public abstract Formula applySubstitution(PropositionalSubstitution subst)

Returns the formula obtained by applying the specified substitution on propositional formulas.

Parameters:

subst - the substitution to apply.

Returns:

the formula obtained applying the substitution.

applySubstitution

public abstract Formula applySubstitution(Substitution subst)

Returns the formula obtained by applying the specified substitution.

Parameters:

subst - the substitution to apply.

Returns:

the formula obtained applying the substitution.

applyIntuitionisticPartialSubstitution

public abstract Formula applyIntuitionisticPartialSubstitution(Substitution subst)

Returns the formula obtained by applying the specified substitution as intuitionistic partial substitution.

Parameters:

subst - the substitution to apply.

Returns:

the formula obtained applying the substitution.

containsTrue

public abstract boolean containsTrue()

Returns true iff this formula contains the propositional constant TRUE as subfromula.

Returns:

true iff this formula contains the propositional constant TRUE.

containsFalse

public abstract boolean containsFalse()

Returns true iff this formula contains the propositional constant FALSE as subformula.

Returns:

true iff this formula contains the propositional constant FALSE.

isFalse

public abstract boolean isFalse()

Returns true iff this formula is the propositional constant FALSE.

Returns:

true iff this formula is the propositional constant FALSE.

isTrue

public abstract boolean isTrue()

Returns true iff this is the propositional constant TRUE.

Returns:

true iff this is the propositional constant TRUE.

isIntuitionisticLocalFormula

public abstract boolean isIntuitionisticLocalFormula()

TODO: doc Returns true iff this is a local formula.

Returns:

true iff this is a local formula.

getFactory

public abstract FormulaFactory getFactory()

Returns the factory used to build this formula.

Returns:

the factory used to build this formula.

getFormulaType

public abstract FormulaType getFormulaType()

Returns the formula type of this formula.

Returns:

the formula type.

size

public int size()

Returns the size of this formula.

Returns:

the size of this formula.

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object