mwalk.visitor
Class JoinVisitor

java.lang.Object
  |
  +--mwalk.visitor.AbstractVisitor
        |
        +--mwalk.visitor.JoinVisitor

public class JoinVisitor

extends AbstractVisitor

implements UpVisitor

A visitor used to mark the initial join time along a receiver's earliest path.

Version:

1.0

Author:

Robert Chalmers

Field Summary

protected long

earliest Earliest join time

Fields inherited from class mwalk.visitor.AbstractVisitor

CFG_BASE, eval, seen, verbose

Constructor Summary

JoinVisitor()
Default constructor.

Method Summary

TreeNode[]	getParents(Tree tree, TreeNode node) Get a list of parents for the current node applying correct activity semantics.
boolean	nextReceiver(Tree tree, Receiver recv) Check whether the next receiver should start a visiting path.
void	reset(Tree tree) Reset the visitor for a new pass over the tree.

Methods inherited from class mwalk.visitor.AbstractVisitor

again, cfgBoolean, cfgInt, cfgString, cfgVisitor, evaluator, evaluator, getChildren, getReceivers, haveSeen, haveVisited, init, markSeen, markVisited, postfix, prefix, verbose, visitDown, visitDown, visitUp, visitUp, walkDown, walkUp

Methods inherited from class java.lang.Object

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

Field Detail

earliest

protected long earliest

Earliest join time

Constructor Detail

JoinVisitor

public JoinVisitor()

Default constructor.

Method Detail

reset

public void reset(Tree tree)

Reset the visitor for a new pass over the tree.

Overrides:

reset in class AbstractVisitor

Parameters:

Tree - vistited tree

nextReceiver

public boolean nextReceiver(Tree tree,
                            Receiver recv)

Check whether the next receiver should start a visiting path.

Specified by:

nextReceiver in interface UpVisitor

Overrides:

nextReceiver in class AbstractVisitor

Parameters:

Tree - current tree instance

Receiver - next receiver

Returns:

boolean whether to visit next receiver

getParents

public TreeNode[] getParents(Tree tree,
                             TreeNode node)

Get a list of parents for the current node applying correct activity semantics.

Specified by:

getParents in interface UpVisitor

Overrides:

getParents in class AbstractVisitor

Parameters:

Tree - current tree instance

TreeNode - current node

Returns:

TreeNode[] array of parent nodes of currently visited node