edu.washington.cs.knowitall.regex

Class Expression.Option<E>

java.lang.Object

edu.washington.cs.knowitall.regex.Expression.Option<E>

Type Parameters:

E -

All Implemented Interfaces:

com.google.common.base.Predicate<E>, Expression<E>

Enclosing interface:

Expression<E>

public static class Expression.Option<E>
extends java.lang.Object
implements Expression<E>

Zero or one of the enclosed expression. <foo>?

Nested Class Summary

Nested classes/interfaces inherited from interface edu.washington.cs.knowitall.regex.Expression

Expression.AssertionExpression<E>, Expression.BaseExpression<E>, Expression.EndAssertion<E>, Expression.MatchingGroup<E>, Expression.MinMax<E>, Expression.NamedGroup<E>, Expression.NonMatchingGroup<E>, Expression.Option<E>, Expression.Or<E>, Expression.Plus<E>, Expression.Star<E>, Expression.StartAssertion<E>

Constructor Summary

Constructors

Constructor and Description
Expression.Option(Expression<E> expr)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	apply(E entity)
FiniteAutomaton.Automaton<E>	build() Convert the expression into a NFA.
int	minMatchingLength()
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.google.common.base.Predicate

equals

Constructor Detail

Expression.Option

public Expression.Option(Expression<E> expr)

Method Detail

apply

public boolean apply(E entity)

Specified by:

apply in interface com.google.common.base.Predicate<E>

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

build

public FiniteAutomaton.Automaton<E> build()

Convert the expression into a NFA.

Specified by:

build in interface Expression<E>

minMatchingLength

public int minMatchingLength()

Specified by:

minMatchingLength in interface Expression<E>