Class DFSDiscoverTimeIterator<T>

java.lang.Object

java.util.AbstractCollection<T>

java.util.AbstractList<T>

java.util.ArrayList<T>

com.ibm.wala.util.graph.traverse.DFSDiscoverTimeIterator<T>

All Implemented Interfaces:

Serializable, Cloneable, Iterable<T>, Collection<T>, Iterator<T>, List<T>, RandomAccess, SequencedCollection<T>

Direct Known Subclasses:

NumberedDFSDiscoverTimeIterator, SlowDFSDiscoverTimeIterator

public abstract class DFSDiscoverTimeIterator<T>
extends ArrayList<T>
implements Iterator<T>

This class implements depth-first search over a NumberedGraph, return an enumeration of the nodes of the graph in order of increasing discover time. This class follows the outNodes of the graph nodes to define the graph, but this behavior can be changed by overriding the getConnected method.

See Also:

• Serialized Form

Field Summary

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

Constructors

Constructor	Description
DFSDiscoverTimeIterator()

Method Summary

Modifier and Type	Method	Description
protected abstract Iterator<? extends T>	getConnected(T n)	get the out edges of a given node
protected abstract @Nullable Iterator<? extends T>	getPendingChildren(T n)
boolean	hasNext()	Return whether there are any more nodes left to enumerate.
protected void	init(Iterator<? extends T> nodes)	subclass constructors must call this!
protected void	init(T N)	subclass constructors must call this!
T	next()	Find the next graph node in discover time order.
void	remove()
protected abstract void	setPendingChildren(T v, Iterator<? extends T> iterator)
protected void	visitEdge(T from, T to)

Methods inherited from class java.util.ArrayList

add, add, addAll, addAll, addFirst, addLast, clear, clone, contains, ensureCapacity, equals, forEach, get, getFirst, getLast, hashCode, indexOf, isEmpty, iterator, lastIndexOf, listIterator, listIterator, remove, remove, removeAll, removeFirst, removeIf, removeLast, removeRange, replaceAll, retainAll, set, size, sort, spliterator, subList, toArray, toArray, trimToSize

Methods inherited from class java.util.AbstractCollection

containsAll, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Collection

parallelStream, stream, toArray

Methods inherited from interface java.util.Iterator

forEachRemaining

Methods inherited from interface java.util.List

containsAll, reversed

Constructor Details

DFSDiscoverTimeIterator

public DFSDiscoverTimeIterator()

Method Details

init

protected void init(Iterator<? extends T> nodes)

subclass constructors must call this!

init

protected void init(T N)

subclass constructors must call this!

hasNext

public boolean hasNext()

Return whether there are any more nodes left to enumerate.

Specified by:

hasNext in interface Iterator<T>

Returns:

true if there nodes left to enumerate.

getPendingChildren

protected abstract @Nullable Iterator<? extends T> getPendingChildren(T n)

setPendingChildren

protected abstract void setPendingChildren(T v,
 Iterator<? extends T> iterator)

next

@NullUnmarked
public T next()
       throws NoSuchElementException

Find the next graph node in discover time order.

Specified by:

next in interface Iterator<T>

Returns:

the next graph node in discover time order.

Throws:

NoSuchElementException

getConnected

protected abstract Iterator<? extends T> getConnected(T n)

get the out edges of a given node

Parameters:

n - the node of which to get the out edges

Returns:

the out edges

remove

public void remove()
            throws UnimplementedError

Specified by:

remove in interface Iterator<T>

Throws:

UnimplementedError

visitEdge

protected void visitEdge(T from,
 T to)

Parameters:

from - source of the edge to visit

to - target of the edge to visit