com.google.javascript.jscomp

Class ReorderConstantExpression

java.lang.Object

com.google.javascript.jscomp.AbstractPeepholeOptimization

com.google.javascript.jscomp.ReorderConstantExpression

class ReorderConstantExpression
extends AbstractPeepholeOptimization

Reorder constant expression hoping for a better compression. ex. x === 0 -> 0 === x After reordering, expressions like 0 === x and 0 === y may have higher compression together than their original counterparts.

Constructor Summary

Constructors

Constructor and Description
ReorderConstantExpression()

Method Summary

Modifier and Type	Method and Description
(package private) Node	optimizeSubtree(Node subtree) Given a node to optimize and a traversal, optimize the node.

Methods inherited from class com.google.javascript.jscomp.AbstractPeepholeOptimization

areDeclaredGlobalExternsOnWindow, areNodesEqualForInlining, beginTraversal, endTraversal, getCodingConvention, isASTNormalized, isEcmaScript5OrGreater, mayEffectMutableState, mayHaveSideEffects, nodeTypeMayHaveSideEffects, report, reportCodeChange

Methods inherited from class java.lang.Object

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

Constructor Detail

ReorderConstantExpression

ReorderConstantExpression()

Method Detail

optimizeSubtree

Node optimizeSubtree(Node subtree)

Description copied from class: AbstractPeepholeOptimization

Given a node to optimize and a traversal, optimize the node. Subclasses should override to provide their own peephole optimization.

Specified by:

optimizeSubtree in class AbstractPeepholeOptimization

Parameters:

subtree - The subtree that will be optimized.

Returns:

The new version of the subtree (or null if the subtree or one of its parents was removed from the AST). If the subtree has not changed, this method must return subtree.