com.google.javascript.jscomp

Class J2clPropertyInlinerPass

java.lang.Object

com.google.javascript.jscomp.J2clPropertyInlinerPass

All Implemented Interfaces:

CompilerPass

public class J2clPropertyInlinerPass
extends java.lang.Object
implements CompilerPass

This pass targets J2CL output. It looks for static get and set methods defined within a class that match the signature of J2CL static fields and inlines them at their call sites. This is done for performance reasons since getter and setter accesses are slower than regular field accesses.

This will be done by looking at all property accesses and determining if they have a corresponding get or set method on the property qualifiers definition. Some caveats:

• Avoid inlining if the property is set using compound assignments.
• Avoid inlining if the property is incremented using ++ or --

Since this pass only really works after the AggressiveInlineAliases pass has run, we have to look for Object.defineProperties instead of es6 get and set nodes since es6 transpilation has already occurred if the language out is ES5.

Constructor Summary

Constructors

Constructor and Description
J2clPropertyInlinerPass(AbstractCompiler compiler)

Method Summary

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

Methods inherited from class java.lang.Object

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

Constructor Detail

J2clPropertyInlinerPass

public J2clPropertyInlinerPass(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