com.google.javascript.jscomp

Class Es6ToEs3ClassSideInheritance

java.lang.Object

com.google.javascript.jscomp.NodeTraversal.AbstractPostOrderCallback

com.google.javascript.jscomp.Es6ToEs3ClassSideInheritance

All Implemented Interfaces:

CompilerPass, NodeTraversal.Callback

public final class Es6ToEs3ClassSideInheritance
extends NodeTraversal.AbstractPostOrderCallback
implements CompilerPass

Rewrites static inheritance to explicitly copy inherited properties from super class to sub class eliminating dynamic copying from the original transpilation pass in the process. For example, Es6ToEs3Converter will convert

 class Foo { static f() {} }
 class Bar extends Foo {}
 

to

 function Foo() {}
 Foo.f = function() {};
 function Bar() {}
 $jscomp$copy$properties(Foo, Bar);
 

and then this class will convert that to

 function Foo() {}
 Foo.f = function() {};
 function Bar() {}
 Bar.f = Foo.f;
 

Author:

[email protected] (Matthew Loring)

Constructor Summary

Constructors

Constructor and Description
Es6ToEs3ClassSideInheritance(AbstractCompiler compiler)

Method Summary

Modifier and Type	Method and Description
void	process(Node externs, Node root) Process the JS with root node root.
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

Constructor Detail

Es6ToEs3ClassSideInheritance

public Es6ToEs3ClassSideInheritance(AbstractCompiler compiler)

Method Detail

process

public void process(Node externs,
                    Node root)

Description copied from interface: CompilerPass

Process the JS with root node root. Can modify the contents of each Node tree

Specified by:

process in interface CompilerPass

Parameters:

externs - Top of external JS tree

root - Top of JS tree

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