Package jmri.jmrit.logixng.util.parser

Class ExpressionNodeFalse

java.lang.Object

jmri.jmrit.logixng.util.parser.ExpressionNodeFalse

All Implemented Interfaces:

ExpressionNode

public class ExpressionNodeFalse
extends Object
implements ExpressionNode

A parsed expression that always return false

Constructor Summary

Constructors

Constructor	Description
ExpressionNodeFalse()

Method Summary

Modifier and Type	Method	Description
Object	calculate(SymbolTable symbolTable)	Calculate the expression
String	getDefinitionString()	Get a String that defines this expression node.

Methods inherited from class java.lang.Object

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

Methods inherited from interface jmri.jmrit.logixng.util.parser.ExpressionNode

assignValue, canBeAssigned

Constructor Details

ExpressionNodeFalse

public ExpressionNodeFalse()

Method Details

calculate

public Object calculate(SymbolTable symbolTable)

Description copied from interface: ExpressionNode

Calculate the expression

Specified by:

calculate in interface ExpressionNode

Parameters:

symbolTable - the symbol table

Returns:

the result

getDefinitionString

public String getDefinitionString()

Get a String that defines this expression node.

Specified by:

getDefinitionString in interface ExpressionNode

Returns:

the string