org.lsmp.djep.matrixJep.function
Class MAssign

java.lang.Object
  org.nfunk.jep.function.PostfixMathCommand
      org.nfunk.jep.function.Assign
          org.lsmp.djep.matrixJep.function.MAssign

All Implemented Interfaces:

MatrixSpecialEvaluationI, PostfixMathCommandI, SpecialEvaluationI

public class MAssign

extends Assign

implements MatrixSpecialEvaluationI

A matrix enabled asignment function. The lhs of an assigment must be a variable.

Author:

Rich Morris Created on 23-Feb-2004

Field Summary

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

curNumberOfParameters, numberOfParameters

Constructor Summary

MAssign()

Method Summary

MatrixValueI	evaluate(MatrixNodeI node, MatrixEvaluator visitor, MatrixJep j) A special methods for evaluating an assignment.
void	run(java.util.Stack s) The run method should not be called.

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

evaluate

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

checkStack, getNumberOfParameters, setCurNumberOfParameters

Methods inherited from class java.lang.Object

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

Constructor Detail

MAssign

public MAssign()

Method Detail

run

public void run(java.util.Stack s)
         throws ParseException

The run method should not be called. Use evaluate(org.lsmp.djep.matrixJep.nodeTypes.MatrixNodeI, org.lsmp.djep.matrixJep.MatrixEvaluator, org.lsmp.djep.matrixJep.MatrixJep) instead.

Specified by:

run in interface PostfixMathCommandI

Overrides:

run in class PostfixMathCommand

Throws:

ParseException

evaluate

public MatrixValueI evaluate(MatrixNodeI node,
                             MatrixEvaluator visitor,
                             MatrixJep j)
                      throws ParseException

A special methods for evaluating an assignment. When an asignment is encountered, first evaluate the rhs. Then set the value of the lhs to the result.

Specified by:

evaluate in interface MatrixSpecialEvaluationI

Parameters:

node - The top node.

visitor - The parser visitor

j - The current MatrixJep instance.

Returns:

Value after evaluation.

Throws:

ParseException