com.google.javascript.jscomp

Class RemoveUnusedPrototypeProperties

java.lang.Object

com.google.javascript.jscomp.RemoveUnusedPrototypeProperties

All Implemented Interfaces:

CompilerPass

class RemoveUnusedPrototypeProperties
extends java.lang.Object
implements CompilerPass

Removes unused properties from prototypes.

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	anchorUnusedVars
private boolean	canModifyExterns
private AbstractCompiler	compiler
private static java.util.logging.Logger	logger

Constructor Summary

Constructors

Constructor and Description
RemoveUnusedPrototypeProperties(AbstractCompiler compiler, boolean canModifyExterns, boolean anchorUnusedVars) Creates a new pass for removing unused prototype properties, based on the uniqueness of property names.

Method Summary

Modifier and Type	Method and Description
void	process(Node externRoot, 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

Field Detail

logger

private static final java.util.logging.Logger logger

compiler

private final AbstractCompiler compiler

canModifyExterns

private final boolean canModifyExterns

anchorUnusedVars

private final boolean anchorUnusedVars

Constructor Detail

RemoveUnusedPrototypeProperties

RemoveUnusedPrototypeProperties(AbstractCompiler compiler,
                                boolean canModifyExterns,
                                boolean anchorUnusedVars)

Creates a new pass for removing unused prototype properties, based on the uniqueness of property names.

Parameters:

compiler - The compiler.

canModifyExterns - If true, then we can remove prototype properties that are declared in the externs file.

anchorUnusedVars - If true, then we must keep unused variables and the prototype properties they reference, even if they are never used.

Method Detail

process

public void process(Node externRoot,
                    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:

externRoot - Top of external JS tree

root - Top of JS tree