org.apache.catalina.ssi
Class ExpressionParseTree

java.lang.Object
  org.apache.catalina.ssi.ExpressionParseTree

public class ExpressionParseTree
extends Object

Represents a parsed expression.

Version:

$Revision: 1136399 $

Author:

Paul Speed

Constructor Summary

ExpressionParseTree(String expr, SSIMediator ssiMediator)
Creates a new parse tree for the specified expression.

Method Summary

boolean

evaluateTree() Evaluates the tree and returns true or false.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpressionParseTree

public ExpressionParseTree(String expr,
                           SSIMediator ssiMediator)
                    throws ParseException

Creates a new parse tree for the specified expression.

Throws:

ParseException

Method Detail

evaluateTree

public boolean evaluateTree()

Evaluates the tree and returns true or false. The specified SSIMediator is used to resolve variable references.