org.antlr.stringtemplate.language
Class StripIterator

java.lang.Object
  org.antlr.stringtemplate.language.StripIterator

All Implemented Interfaces:

java.util.Iterator

public class StripIterator
extends java.lang.Object
implements java.util.Iterator

Given an iterator, return only the non-null elements via next().

Field Summary
protected  java.util.Iterator	it
protected  java.lang.Object	lookahead           To know if stripped iterator hasNext(), we need to see if there is another non-null element or not.

 

Constructor Summary
StripIterator(java.util.Iterator it)

 

Method Summary
protected  void	consume()           Set lookahead to next non-null element or null if nothing left
boolean	hasNext()           Either the list has more stuff or our lookahead has last element
java.lang.Object	next()
void	remove()
java.lang.String	toString()           The result of asking for the string of an iterator is the list of elements and so this is just the list w/o nulls.

 

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

 

Field Detail

it

protected java.util.Iterator it

lookahead

protected java.lang.Object lookahead

To know if stripped iterator hasNext(), we need to see if there is another non-null element or not.

StripIterator

public StripIterator(java.util.Iterator it)

consume

protected void consume()

Set lookahead to next non-null element or null if nothing left

hasNext

public boolean hasNext()

Either the list has more stuff or our lookahead has last element

Specified by:

hasNext in interface java.util.Iterator

next

public java.lang.Object next()

Specified by:

next in interface java.util.Iterator

remove

public void remove()

Specified by:

remove in interface java.util.Iterator

toString

public java.lang.String toString()

The result of asking for the string of an iterator is the list of elements and so this is just the list w/o nulls. This is destructive in that the iterator cursors have moved to the end after printing.

Overrides:

toString in class java.lang.Object