org.concord.util.script
Class NullLiteral

java.lang.Object
  |
  +--org.concord.util.script.ScriptObject
        |
        +--org.concord.util.script.Expression
              |
              +--org.concord.util.script.NullLiteral

All Implemented Interfaces:

java.beans.BeanInfo

public class NullLiteral

extends Expression

This node represents the null value in the semantic tree.

Version:

$Revision: 1.1.1.1 $ $Date: 2001/04/28 00:39:31 $

Author:

$Author: ed $

Fields inherited from class org.concord.util.script.ScriptObject

beginColumn, beginLine, debug, deleted, doConversion, endColumn, endLine, name, nil, runtimeTable, script

Fields inherited from interface java.beans.BeanInfo

ICON_COLOR_16x16, ICON_COLOR_32x32, ICON_MONO_16x16, ICON_MONO_32x32

Constructor Summary

NullLiteral()

Method Summary

java.lang.Object	getValue()
void	interpret() This does nothing.
java.lang.String	toString()

Methods inherited from class org.concord.util.script.Expression

interpret

Methods inherited from class org.concord.util.script.ScriptObject

delete, findConstructor, findMethod, getAdditionalBeanInfo, getArrayValue, getAtom, getBeanDescriptor, getCurrentFrame, getDefaultEventIndex, getDefaultPropertyIndex, getEventSetDescriptors, getField, getFieldValue, getIcon, getMethodDescriptors, getName, getPropertyDescriptors, getScript, popFrame, pushFrame, setArrayValue, setCurrentFrame, setFieldValue, setName, setScript, setSourceBounds

Methods inherited from class java.lang.Object

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

Constructor Detail

NullLiteral

public NullLiteral()

Method Detail

getValue

public java.lang.Object getValue()

interpret

public void interpret()

Description copied from class: ScriptObject

This does nothing. Maybe should be abstract?

Overrides:

interpret in class Expression

toString

public java.lang.String toString()

Overrides:

toString in class Expression