com.steelypip.powerups.minxml

Class MinXMLWalker

java.lang.Object

com.steelypip.powerups.minxml.MinXMLWalker

public abstract class MinXMLWalker
extends java.lang.Object

A convenience class that implements a recursive walk over a MinXML tree.

Constructor Summary

Constructors

Constructor and Description
MinXMLWalker()

Method Summary

Modifier and Type	Method and Description
abstract void	endWalk(MinXML subject) endWalk is called at the end of the tree-walk of the subject and its children.
java.lang.Iterable<MinXML>	postOrder(@NonNull MinXML subject)
java.lang.Iterable<MinXML>	preOrder(@NonNull MinXML subject)
abstract void	startWalk(MinXML subject) startWalk is called at the start of the tree-walk of the subject and its children.
MinXMLWalker	walk(MinXML subject) The walk method is used to implement a depth-first, left-to-right recursive scan over a tree.

Methods inherited from class java.lang.Object

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

Constructor Detail

MinXMLWalker

public MinXMLWalker()

Method Detail

startWalk

public abstract void startWalk(MinXML subject)

startWalk is called at the start of the tree-walk of the subject and its children. It will be called once for each node in the tree.

Parameters:

subject - the MinXML element to be visited

endWalk

public abstract void endWalk(MinXML subject)

endWalk is called at the end of the tree-walk of the subject and its children. It will be called once for each node in the tree.

Parameters:

subject - the MinXML element to be visited

walk

public MinXMLWalker walk(MinXML subject)

The walk method is used to implement a depth-first, left-to-right recursive scan over a tree. The startWalk and endWalk methods are invoked on the way down the tree and up the tree respectively.

Parameters:

subject - the element tree to be walked

Returns:

the walker itself, used for chaining method calls.

preOrder

public java.lang.Iterable<MinXML> preOrder(@NonNull MinXML subject)

postOrder

public java.lang.Iterable<MinXML> postOrder(@NonNull MinXML subject)