com.singularsys.jep.misc.nullwrapper
Class NullWrapperPfmc

java.lang.Object
  com.singularsys.jep.functions.PostfixMathCommand
      com.singularsys.jep.misc.nullwrapper.NullWrapperPfmc

All Implemented Interfaces:

PostfixMathCommandI, java.io.Serializable

public class NullWrapperPfmc
extends PostfixMathCommand

Wrap a general PostfixMathCommand so that if any argument is null the function will return null.

Since:

3.4

Author:

Richard Morris

See Also:

Serialized Form

Field Summary

Fields inherited from class com.singularsys.jep.functions.PostfixMathCommand

curNumberOfParameters, name, NaN, numberOfParameters

Constructor Summary

NullWrapperPfmc(PostfixMathCommand fun)

Method Summary

void	run(java.util.Stack<java.lang.Object> stack) Run the function on the stack.

Methods inherited from class com.singularsys.jep.functions.PostfixMathCommand

asArray, asBool, asDouble, asInt, asLong, asStrictInt, asString, checkNumberOfParameters, checkStack, getName, getNumberOfParameters, setCurNumberOfParameters, setName, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

NullWrapperPfmc

public NullWrapperPfmc(PostfixMathCommand fun)

Parameters:

fun -

Method Detail

run

public void run(java.util.Stack<java.lang.Object> stack)
         throws EvaluationException

Description copied from interface: PostfixMathCommandI

Run the function on the stack. Pops the arguments from the stack, and pushes the result on the top of the stack.

Throws:

EvaluationException