org.eclipse.persistence.internal.libraries.antlr.runtime.tree

Class TreeIterator

java.lang.Object

org.eclipse.persistence.internal.libraries.antlr.runtime.tree.TreeIterator

All Implemented Interfaces:

java.util.Iterator<java.lang.Object>

public class TreeIterator
extends java.lang.Object
implements java.util.Iterator<java.lang.Object>

Return a node stream from a doubly-linked tree whose nodes know what child index they are. No remove() is supported. Emit navigation nodes (DOWN, UP, and EOF) to let show tree structure.

Field Summary

Fields

Modifier and Type	Field and Description
protected TreeAdaptor	adaptor
java.lang.Object	down
java.lang.Object	eof
protected boolean	firstTime
protected FastQueue<java.lang.Object>	nodes If we emit UP/DOWN nodes, we need to spit out multiple nodes per next() call.
protected java.lang.Object	root
protected java.lang.Object	tree
java.lang.Object	up

Constructor Summary

Constructors

Constructor and Description
TreeIterator(java.lang.Object tree)
TreeIterator(TreeAdaptor adaptor, java.lang.Object tree)

Method Summary

Modifier and Type	Method and Description
boolean	hasNext()
java.lang.Object	next()
void	remove()
void	reset()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Field Detail

adaptor

protected TreeAdaptor adaptor

root

protected java.lang.Object root

tree

protected java.lang.Object tree

firstTime

protected boolean firstTime

up

public java.lang.Object up

down

public java.lang.Object down

eof

public java.lang.Object eof

nodes

protected FastQueue<java.lang.Object> nodes

If we emit UP/DOWN nodes, we need to spit out multiple nodes per next() call.

Constructor Detail

TreeIterator

public TreeIterator(java.lang.Object tree)

TreeIterator

public TreeIterator(TreeAdaptor adaptor,
                    java.lang.Object tree)

Method Detail

reset

public void reset()

hasNext

public boolean hasNext()

Specified by:

hasNext in interface java.util.Iterator<java.lang.Object>

next

public java.lang.Object next()

Specified by:

next in interface java.util.Iterator<java.lang.Object>

remove

public void remove()

Specified by:

remove in interface java.util.Iterator<java.lang.Object>