com.google.javascript.jscomp

Class ShadowVariables.DoShadowVariables

java.lang.Object

com.google.javascript.jscomp.NodeTraversal.AbstractPostOrderCallback

com.google.javascript.jscomp.ShadowVariables.DoShadowVariables

All Implemented Interfaces:

NodeTraversal.Callback, NodeTraversal.ScopedCallback

Enclosing class:

ShadowVariables

private class ShadowVariables.DoShadowVariables
extends NodeTraversal.AbstractPostOrderCallback
implements NodeTraversal.ScopedCallback

Constructor Summary

Constructors

Modifier	Constructor and Description
private	DoShadowVariables()

Method Summary

Modifier and Type	Method and Description
private void	doShadow(RenameVars.Assignment original, RenameVars.Assignment toShadow, Var var)
void	enterScope(NodeTraversal t) Called immediately after entering a new scope.
void	exitScope(NodeTraversal t) Called immediately before exiting a scope.
private RenameVars.Assignment	findBestShadow(Scope curScope)
void	visit(NodeTraversal t, Node n, Node parent) Visits a node in postorder (after its children have been visited).

Methods inherited from class com.google.javascript.jscomp.NodeTraversal.AbstractPostOrderCallback

shouldTraverse

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

shouldTraverse

Constructor Detail

DoShadowVariables

private DoShadowVariables()

Method Detail

enterScope

public void enterScope(NodeTraversal t)

Description copied from interface: NodeTraversal.ScopedCallback

Called immediately after entering a new scope. The new scope can be accessed through t.getScope()

Specified by:

enterScope in interface NodeTraversal.ScopedCallback

exitScope

public void exitScope(NodeTraversal t)

Description copied from interface: NodeTraversal.ScopedCallback

Called immediately before exiting a scope. The ending scope can be accessed through t.getScope()

Specified by:

exitScope in interface NodeTraversal.ScopedCallback

visit

public void visit(NodeTraversal t,
                  Node n,
                  Node parent)

Description copied from interface: NodeTraversal.Callback

Visits a node in postorder (after its children have been visited). A node is visited only if all its parents should be traversed (NodeTraversal.Callback.shouldTraverse(NodeTraversal, Node, Node)).

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

Specified by:

visit in interface NodeTraversal.Callback

findBestShadow

private RenameVars.Assignment findBestShadow(Scope curScope)

Returns:

An assignment that can be used as a shadow for a local variable in the scope defined by curScopeRoot.

doShadow

private void doShadow(RenameVars.Assignment original,
                      RenameVars.Assignment toShadow,
                      Var var)