org.lsmp.djep.xjep.function

Class XAssign

java.lang.Object

org.nfunk.jep.function.PostfixMathCommand

org.nfunk.jep.function.Assign

org.lsmp.djep.xjep.function.XAssign

All Implemented Interfaces:

CommandVisitorI, CallbackEvaluationI, PostfixMathCommandI

public class XAssign
extends Assign
implements CommandVisitorI

An assignment operator so we can do x=3+4. This function implements the SpecialEvaluationI interface so that it handles seting the value of a variable.

Author:

Rich Morris Created on 18-Nov-2003

Field Summary

Fields inherited from class org.nfunk.jep.function.PostfixMathCommand

curNumberOfParameters, numberOfParameters

Constructor Summary

Constructors

Constructor and Description
XAssign()

Method Summary

Modifier and Type	Method and Description
Node	process(Node node, Node[] children, XJep xjep) In the pre-process stage, set the equation of the lhs variable to the rhs equation.

Methods inherited from class org.nfunk.jep.function.Assign

evaluate

Methods inherited from class org.nfunk.jep.function.PostfixMathCommand

checkNumberOfParameters, checkStack, getNumberOfParameters, run, setCurNumberOfParameters

Methods inherited from class java.lang.Object

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

Constructor Detail

XAssign

public XAssign()

Method Detail

process

public Node process(Node node,
                    Node[] children,
                    XJep xjep)
             throws ParseException

In the pre-process stage, set the equation of the lhs variable to the rhs equation.

Specified by:

process in interface CommandVisitorI

Parameters:

node - top node of the tree

children - the children of the node after they have been preprocessed.

xjep - a reference to the current XJep interface.

Returns:

top node of the results.

Throws:

ParseException - exception