com.google.javascript.jscomp

Class ControlFlowGraph.AbstractCfgNodeTraversalCallback

java.lang.Object

com.google.javascript.jscomp.ControlFlowGraph.AbstractCfgNodeTraversalCallback

All Implemented Interfaces:

NodeTraversal.Callback

Enclosing class:

ControlFlowGraph<N>

public abstract static class ControlFlowGraph.AbstractCfgNodeTraversalCallback
extends Object
implements NodeTraversal.Callback

Abstract callback to visit a control flow graph node without going into subtrees of the node that are also represented by other control flow graph nodes.

For example, traversing an IF node as root will visit the two subtrees pointed by the ControlFlowGraph.Branch.ON_TRUE and ControlFlowGraph.Branch.ON_FALSE edges.

Constructor Summary

Constructors

Constructor and Description
AbstractCfgNodeTraversalCallback()

Method Summary

Modifier and Type	Method and Description
boolean	shouldTraverse(NodeTraversal nodeTraversal, Node n, Node parent) Visits a node in pre order (before visiting its children) and decides whether this node's children should be traversed.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.google.javascript.jscomp.NodeTraversal.Callback

visit

Constructor Detail

AbstractCfgNodeTraversalCallback

public AbstractCfgNodeTraversalCallback()

Method Detail

shouldTraverse

public final boolean shouldTraverse(NodeTraversal nodeTraversal,
                                    Node n,
                                    Node parent)

Description copied from interface: NodeTraversal.Callback

Visits a node in pre order (before visiting its children) and decides whether this node's children should be traversed. If children are traversed, they will be visited by NodeTraversal.Callback.visit(NodeTraversal, Node, Node) in postorder.

Implementations can have side effects (e.g. modifying the parse tree).

Specified by:

shouldTraverse in interface NodeTraversal.Callback

Returns:

whether the children of this node should be visited