Package org.moeaframework.util.tree

Class NOP

java.lang.Object

org.moeaframework.util.tree.Node

org.moeaframework.util.tree.NOP

public class NOP
extends Node

The node for defining an empty expression.

Constructor Summary

Constructors

Constructor	Description
NOP()	Constructs a new node for defining an empty expression.

Method Summary

Modifier and Type	Method	Description
NOP	copyNode()	Returns a copy of this node, but without any children or parents assigned.
Void	evaluate(Environment environment)	Evaluates this node in the context of the specified environment.

Methods inherited from class org.moeaframework.util.tree.Node

copyTree, getArgument, getArgumentType, getDepth, getFunctionAt, getFunctionAt, getMaximumHeight, getMinimumHeight, getNodeAt, getNodeAt, getNodeAt, getNumberOfArguments, getNumberOfFunctions, getNumberOfFunctions, getNumberOfNodes, getNumberOfNodes, getNumberOfNodes, getNumberOfTerminals, getNumberOfTerminals, getParent, getReturnType, getTerminalAt, getTerminalAt, isFixed, isTerminal, isValid, setArgument, setFixed, setFixedTree, size, toString

Methods inherited from class java.lang.Object

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

Constructor Details

NOP

public NOP()

Constructs a new node for defining an empty expression.

Method Details

copyNode

public NOP copyNode()

Description copied from class: Node

Returns a copy of this node, but without any children or parents assigned.

Specified by:

copyNode in class Node

Returns:

a copy of this node, but without any children or parents assigned

evaluate

public Void evaluate(Environment environment)

Description copied from class: Node

Evaluates this node in the context of the specified environment.

Specified by:

evaluate in class Node

Parameters:

environment - the execution environment

Returns:

the result of evaluating this node