com.google.javascript.jscomp

Class J2clEqualitySameRewriterPass

java.lang.Object

com.google.javascript.jscomp.J2clEqualitySameRewriterPass

public class J2clEqualitySameRewriterPass
extends java.lang.Object

An optimization pass to re-write J2CL Equality.$same.

Method Summary

Modifier and Type	Method and Description
protected boolean	areDeclaredGlobalExternsOnWindow()
protected boolean	areNodesEqualForInlining(Node n1, Node n2) Are the nodes equal for the purpose of inlining? If type aware optimizations are on, type equality is checked.
protected void	deleteNode(Node property) Calls NodeUtil.deleteNode(Node, AbstractCompiler)
protected CodingConvention	getCodingConvention() Returns the current coding convention.
protected boolean	isASTNormalized() Is the current AST normalized? (e.g.
protected boolean	isEcmaScript5OrGreater() Returns whether the output language is ECMAScript 5 or later.
protected void	markFunctionsDeleted(Node function) Calls NodeUtil.markFunctionsDeleted(Node, AbstractCompiler)
protected void	markNewScopesChanged(Node n) Calls NodeUtil.markNewScopesChanged(Node, AbstractCompiler)
protected boolean	mayEffectMutableState(Node n) Returns whether the node may create new mutable state, or change existing state.
protected boolean	mayHaveSideEffects(Node n) Returns whether the node may have side effects when executed.
protected boolean	nodeTypeMayHaveSideEffects(Node n) Returns true if the current node's type implies side effects.
protected void	report(DiagnosticType diagnostic, Node n) Helper method for reporting an error to the compiler when applying a peephole optimization.
protected void	reportChangeToEnclosingScope(Node n)

Methods inherited from class java.lang.Object

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

Method Detail

report

protected void report(DiagnosticType diagnostic,
                      Node n)

Helper method for reporting an error to the compiler when applying a peephole optimization.

Parameters:

diagnostic - The error type

n - The node for which the error should be reported

areNodesEqualForInlining

protected boolean areNodesEqualForInlining(Node n1,
                                           Node n2)

Are the nodes equal for the purpose of inlining? If type aware optimizations are on, type equality is checked.

isASTNormalized

protected boolean isASTNormalized()

Is the current AST normalized? (e.g. has the Normalize pass been run and has the Denormalize pass not yet been run?)

mayEffectMutableState

protected boolean mayEffectMutableState(Node n)

Returns whether the node may create new mutable state, or change existing state.

mayHaveSideEffects

protected boolean mayHaveSideEffects(Node n)

Returns whether the node may have side effects when executed.

nodeTypeMayHaveSideEffects

protected boolean nodeTypeMayHaveSideEffects(Node n)

Returns true if the current node's type implies side effects.

This is a non-recursive version of the may have side effects check; used to check wherever the current node's type is one of the reason's why a subtree has side effects.

isEcmaScript5OrGreater

protected boolean isEcmaScript5OrGreater()

Returns whether the output language is ECMAScript 5 or later. Workarounds for quirks in browsers that do not support ES5 can be ignored when this is true.

getCodingConvention

protected CodingConvention getCodingConvention()

Returns the current coding convention.

areDeclaredGlobalExternsOnWindow

protected final boolean areDeclaredGlobalExternsOnWindow()

reportChangeToEnclosingScope

protected final void reportChangeToEnclosingScope(Node n)

deleteNode

protected final void deleteNode(Node property)

Calls NodeUtil.deleteNode(Node, AbstractCompiler)

markFunctionsDeleted

protected final void markFunctionsDeleted(Node function)

Calls NodeUtil.markFunctionsDeleted(Node, AbstractCompiler)

markNewScopesChanged

protected final void markNewScopesChanged(Node n)

Calls NodeUtil.markNewScopesChanged(Node, AbstractCompiler)