com.sun.tools.xjc.reader.gbind
public abstract class Expression extends Object
Field Summary | |
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static Expression | EPSILON
Expression that represents epsilon, the length-0 string. |
Method Summary | |
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abstract void | buildDAG(ElementSet incoming)
Builds up a DAG among Elements in this expression. |
abstract boolean | isNullable()
True of \epsilon \in L(exp) |
abstract ElementSet | lastSet()
Computes LAST(exp) |