com.singularsys.jep.misc.nullwrapper
Class NullWrapperFunctionTable

java.lang.Object
  com.singularsys.jep.FunctionTable
      com.singularsys.jep.misc.nullwrapper.NullWrapperFunctionTable

All Implemented Interfaces:

JepComponent, java.io.Serializable

public class NullWrapperFunctionTable
extends FunctionTable

A function table which wraps all the functions in an existing table.

Since:

3.4

Author:

Richard Morris

See Also:

Serialized Form

Field Summary

Fields inherited from class com.singularsys.jep.FunctionTable

table

Constructor Summary

NullWrapperFunctionTable(FunctionTable root)
Create a new function table which wraps all the functions in the original table.

Method Summary

protected PostfixMathCommandI

getSpecialFunction(java.lang.String name, PostfixMathCommandI fun) Handles special functions, subclasses can override this method to add treatment of special functions.

Methods inherited from class com.singularsys.jep.FunctionTable

addFunction, clear, containsKey, containsValue, entrySet, getFunction, getLightWeightInstance, init, isEmpty, keySet, remove, shallowCopy, size, toString, values

Methods inherited from class java.lang.Object

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

Constructor Detail

NullWrapperFunctionTable

public NullWrapperFunctionTable(FunctionTable root)

Create a new function table which wraps all the functions in the original table. For each function in the original it will first call getSpecialFunction(String, PostfixMathCommandI) and if necessary NullWrapperFunctionFactory.getWrappedFunction(PostfixMathCommandI)

Parameters:

root - the original table

Method Detail

getSpecialFunction

protected PostfixMathCommandI getSpecialFunction(java.lang.String name,
                                                 PostfixMathCommandI fun)

Handles special functions, subclasses can override this method to add treatment of special functions. This method will replace the "if" function with NullWrappedIf

Parameters:

name - name of the function

fun - original function

Returns:

the new function or null if it is not a special function