com.singularsys.jep.misc.nullwrapper
Class NullWrapperPfmc

java.lang.Object
  extended by com.singularsys.jep.functions.PostfixMathCommand
      extended by 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


Copyright © 2010 Singular Systems http://www.singularsys.com/jep