Package owl.ltl

Class Biconditional

java.lang.Object

owl.ltl.Formula

owl.ltl.Formula.PropositionalOperator

owl.ltl.Biconditional

All Implemented Interfaces:

Comparable<Formula>

public final class Biconditional
extends Formula.PropositionalOperator

Biconditional.

Nested Class Summary

Nested classes/interfaces inherited from class owl.ltl.Formula

Formula.BinaryTemporalOperator, Formula.NaryPropositionalOperator, Formula.PropositionalOperator, Formula.TemporalOperator, Formula.UnaryTemporalOperator

Field Summary

Fields inherited from class owl.ltl.Formula

operands

Constructor Summary

Constructors

Constructor	Description
Biconditional(Formula leftOperand, Formula rightOperand)

Method Summary

Modifier and Type	Method	Description
<R,P> R	accept(BinaryVisitor<P,R> visitor, P parameter)
int	accept(IntVisitor visitor)
<R> R	accept(Visitor<R> visitor)
boolean	isPureEventual()
boolean	isPureUniversal()
Formula	leftOperand()
Formula	nnf()
Formula	not()	Syntactically negate this formula.
static Formula	of(Formula leftOperand, Formula rightOperand)	Construct a LTL-equivalent formula for (leftOperand)<->(rightOperand).
Formula	rightOperand()
Formula	substitute(Function<? super Formula.TemporalOperator,? extends Formula> substitution)
Formula	temporalStep(BitSet valuation)	Do a single temporal step.
String	toString()

Methods inherited from class owl.ltl.Formula.PropositionalOperator

unfold

Methods inherited from class owl.ltl.Formula

allMatch, anyMatch, atomicPropositions, compareTo, compareValue, equals, equalsValue, hashCode, height, isSuspendable, subformulas, subformulas, subformulas

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Biconditional

public Biconditional(Formula leftOperand,
                     Formula rightOperand)

Method Detail

of

public static Formula of(Formula leftOperand,
                         Formula rightOperand)

Construct a LTL-equivalent formula for (leftOperand)<->(rightOperand). The method examines the operands and might choose to construct a simpler formula. However, the size of the syntax tree is not increased. In order to syntactically construct (leftOperand)<->(rightOperand) use the constructor.

Parameters:

leftOperand - The left operand of the biconditional

rightOperand - The right operand of the biconditional

Returns:

a formula equivalent to (leftOperand)<->(rightOperand)

accept

public int accept(IntVisitor visitor)

Specified by:

accept in class Formula

accept

public <R> R accept(Visitor<R> visitor)

Specified by:

accept in class Formula

accept

public <R,P> R accept(BinaryVisitor<P,R> visitor,
                            P parameter)

Specified by:

accept in class Formula

isPureEventual

public boolean isPureEventual()

Specified by:

isPureEventual in class Formula

isPureUniversal

public boolean isPureUniversal()

Specified by:

isPureUniversal in class Formula

not

public Formula not()

Description copied from class: Formula

Syntactically negate this formula.

If this formula is in NNF, the returned negation will also be in NNF.

Specified by:

not in class Formula

Returns:

the negation of this formula.

nnf

public Formula nnf()

Specified by:

nnf in class Formula

substitute

public Formula substitute(Function<? super Formula.TemporalOperator,? extends Formula> substitution)

Specified by:

substitute in class Formula

temporalStep

public Formula temporalStep(BitSet valuation)

Description copied from class: Formula

Do a single temporal step. This means that one layer of X-operators is removed and literals are replaced by their valuations.

Specified by:

temporalStep in class Formula

toString

public String toString()

Overrides:

toString in class Object

leftOperand

public Formula leftOperand()

rightOperand

public Formula rightOperand()