Package com.google.javascript.jscomp.graph

Class FixedPointGraphTraversal<N,E>

java.lang.Object

com.google.javascript.jscomp.graph.FixedPointGraphTraversal<N,E>

Type Parameters:

N - Value type that the graph node stores.

E - Value type that the graph edge stores.

public final class FixedPointGraphTraversal<N,E>
extends Object

A utility class for doing fixed-point computations. We traverse the edges over the given directed graph until the graph reaches a steady state.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	FixedPointGraphTraversal.EdgeCallback<NodeT,EdgeT>	Edge callback

Field Summary

Fields

Modifier and Type	Field	Description
static final String	NON_HALTING_ERROR_MSG

Method Summary

Modifier and Type	Method	Description
void	computeFixedPoint(DiGraph<N,E> graph)	Compute a fixed point for the given graph.
void	computeFixedPoint(DiGraph<N,E> graph, Set<N> entrySet)	Compute a fixed point for the given graph, entering from the given nodes.
void	computeFixedPoint(DiGraph<N,E> graph, N entry)	Compute a fixed point for the given graph, entering from the given node.
static <NodeT, EdgeT> FixedPointGraphTraversal<NodeT,EdgeT>	newReverseTraversal(FixedPointGraphTraversal.EdgeCallback<NodeT,EdgeT> callback)	Helper method for creating new traversals that traverse from child to parent.
static <NodeT, EdgeT> FixedPointGraphTraversal<NodeT,EdgeT>	newTraversal(FixedPointGraphTraversal.EdgeCallback<NodeT,EdgeT> callback)	Helper method for creating new traversals that traverse from parent to child.

Methods inherited from class java.lang.Object

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

Field Details

NON_HALTING_ERROR_MSG

public static final String NON_HALTING_ERROR_MSG

See Also:

• Constant Field Values

Method Details

newTraversal

public static <NodeT,
EdgeT>
FixedPointGraphTraversal<NodeT,EdgeT> newTraversal(FixedPointGraphTraversal.EdgeCallback<NodeT,EdgeT> callback)

Helper method for creating new traversals that traverse from parent to child.

newReverseTraversal

public static <NodeT,
EdgeT>
FixedPointGraphTraversal<NodeT,EdgeT> newReverseTraversal(FixedPointGraphTraversal.EdgeCallback<NodeT,EdgeT> callback)

Helper method for creating new traversals that traverse from child to parent.

computeFixedPoint

public void computeFixedPoint(DiGraph<N,E> graph)

Compute a fixed point for the given graph.

Parameters:

graph - The graph to traverse.

computeFixedPoint

public void computeFixedPoint(DiGraph<N,E> graph,
 N entry)

Compute a fixed point for the given graph, entering from the given node.

Parameters:

graph - The graph to traverse.

entry - The node to begin traversing from.

computeFixedPoint

public void computeFixedPoint(DiGraph<N,E> graph,
 Set<N> entrySet)

Compute a fixed point for the given graph, entering from the given nodes.

Parameters:

graph - The graph to traverse.

entrySet - The nodes to begin traversing from.