com.google.javascript.jscomp

Class SideEffectsAnalysis.DegenerateLocationAbstraction

java.lang.Object

com.google.javascript.jscomp.SideEffectsAnalysis.LocationAbstraction

com.google.javascript.jscomp.SideEffectsAnalysis.DegenerateLocationAbstraction

Enclosing class:

SideEffectsAnalysis

private static class SideEffectsAnalysis.DegenerateLocationAbstraction
extends SideEffectsAnalysis.LocationAbstraction

A very imprecise location abstraction in which there are only two abstract locations: one representing all concrete locations and one for bottom (no concrete locations). This implementation is a thin wrapper on NodeUtil.mayHaveSideEffects() and NodeUtil.canBeSideEffected() -- it doesn't add any real value other than to prototype the LocationAbstraction interface.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	SideEffectsAnalysis.DegenerateLocationAbstraction.DegenerateEffectLocation

Field Summary

Fields

Modifier and Type	Field and Description
private static SideEffectsAnalysis.EffectLocation	EVERY_LOCATION
private static SideEffectsAnalysis.EffectLocation	NO_LOCATION

Constructor Summary

Constructors

Modifier	Constructor and Description
private	DegenerateLocationAbstraction()

Method Summary

Modifier and Type	Method and Description
SideEffectsAnalysis.LocationSummary	calculateLocationSummary(Node node) Calculates the abstraction-specific side effects for the node.
(package private) static SideEffectsAnalysis.EffectLocation	calculateModSet(Node node)
(package private) static SideEffectsAnalysis.EffectLocation	calculateRefSet(Node node)
(package private) SideEffectsAnalysis.EffectLocation	getBottomLocation() Returns an abstraction-specific EffectLocation representing no location.

Methods inherited from class com.google.javascript.jscomp.SideEffectsAnalysis.LocationAbstraction

calculateLocationSummary

Methods inherited from class java.lang.Object

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

Field Detail

EVERY_LOCATION

private static final SideEffectsAnalysis.EffectLocation EVERY_LOCATION

NO_LOCATION

private static final SideEffectsAnalysis.EffectLocation NO_LOCATION

Constructor Detail

DegenerateLocationAbstraction

private DegenerateLocationAbstraction()

Method Detail

getBottomLocation

SideEffectsAnalysis.EffectLocation getBottomLocation()

Description copied from class: SideEffectsAnalysis.LocationAbstraction

Returns an abstraction-specific EffectLocation representing no location.

The bottom location joined with any location should return that location.

Specified by:

getBottomLocation in class SideEffectsAnalysis.LocationAbstraction

calculateLocationSummary

public SideEffectsAnalysis.LocationSummary calculateLocationSummary(Node node)

Description copied from class: SideEffectsAnalysis.LocationAbstraction

Calculates the abstraction-specific side effects for the node.

Specified by:

calculateLocationSummary in class SideEffectsAnalysis.LocationAbstraction

calculateRefSet

static SideEffectsAnalysis.EffectLocation calculateRefSet(Node node)

calculateModSet

static SideEffectsAnalysis.EffectLocation calculateModSet(Node node)