com.sun.tools.xjc.reader.gbind
Class Expression

java.lang.Object
  com.sun.tools.xjc.reader.gbind.Expression

Direct Known Subclasses:

Choice, Element, OneOrMore, Sequence

public abstract class Expression
extends java.lang.Object

This builds content models.

Field Summary

static Expression

EPSILON Expression that represents epsilon, the length-0 string.

Constructor Summary

Expression()

Method Summary

(package private) abstract void	buildDAG(ElementSet incoming) Builds up a DAG among Elements in this expression.
(package private) abstract boolean	isNullable() True of \epsilon \in L(exp)
(package private) abstract ElementSet	lastSet() Computes LAST(exp)

Methods inherited from class java.lang.Object

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

Field Detail

EPSILON

public static final Expression EPSILON

Expression that represents epsilon, the length-0 string.

Constructor Detail

Expression

public Expression()

Method Detail

lastSet

abstract ElementSet lastSet()

Computes LAST(exp)

isNullable

abstract boolean isNullable()

True of \epsilon \in L(exp)

buildDAG

abstract void buildDAG(ElementSet incoming)

Builds up a DAG among Elements in this expression.