Package com.singularsys.jep.misc.nullwrapper.functions

Class NullWrappedAbstractInc

java.lang.Object

com.singularsys.jep.functions.PostfixMathCommand

com.singularsys.jep.misc.javaops.AbstractInc

com.singularsys.jep.misc.nullwrapper.functions.NullWrappedAbstractInc

All Implemented Interfaces:

CallbackEvaluationI, NullWrappedFunctionI, PostfixMathCommandI, Serializable

public class NullWrappedAbstractInc
extends AbstractInc
implements NullWrappedFunctionI

Null wrapped version of the AbstractInc functions.

Author:

rich

See Also:

• Serialized Form

Field Summary

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

curNumberOfParameters, name, NaN, numberOfParameters

Constructor Summary

Constructors

Constructor	Description
NullWrappedAbstractInc(AbstractInc root)

Method Summary

Modifier and Type	Method	Description
Object	evaluate(Node node, Evaluator pv)	Performs some special evaluation on the node.
AbstractInc	getRoot()	Get to function which this function wraps.
void	setName(String name)	Sets the name of the function used for error messages

Methods inherited from class com.singularsys.jep.misc.javaops.AbstractInc

getVal, getVar

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

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

Methods inherited from class java.lang.Object

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

Constructor Details

NullWrappedAbstractInc

public NullWrappedAbstractInc(AbstractInc root)

Method Details

getRoot

public AbstractInc getRoot()

Description copied from interface: NullWrappedFunctionI

Get to function which this function wraps.

Specified by:

getRoot in interface NullWrappedFunctionI

Returns:

the root function, may be "this".

evaluate

public Object evaluate(Node node,
 Evaluator pv)
                throws EvaluationException

Description copied from interface: CallbackEvaluationI

Performs some special evaluation on the node. This method has the responsibility for evaluating the children of the node, and it should generally call

 pv.eval(node.jjtGetChild(i))   
 

for each child. The SymbolTable is not passed as an argument. This is because it is better practice to get and set variable values by using node.getVar().setValue() rather that through the SymbolTable with requires a hashtable lookup.

Specified by:

evaluate in interface CallbackEvaluationI

Parameters:

node - The current node

pv - The visitor, can be used evaluate the children

Returns:

the value after evaluation. This value will be passed to other functions higher up the node tree. The value can be any type including Double or Vector<Object>

Throws:

EvaluationException - if the calculation cannot be performed

See Also:

• Evaluator

setName

public void setName(String name)

Description copied from interface: PostfixMathCommandI

Sets the name of the function used for error messages

Specified by:

setName in interface PostfixMathCommandI

Overrides:

setName in class PostfixMathCommand

Parameters:

name - the function name