Class PropertyCacheNode.ConstantObjectPrototypeChainShapeCheckNode

java.lang.Object

com.oracle.truffle.api.nodes.Node

com.oracle.truffle.js.nodes.JavaScriptBaseNode

com.oracle.truffle.js.nodes.access.PropertyCacheNode.ReceiverCheckNode

com.oracle.truffle.js.nodes.access.PropertyCacheNode.AbstractShapeCheckNode

com.oracle.truffle.js.nodes.access.PropertyCacheNode.AbstractSingleRealmShapeCheckNode

com.oracle.truffle.js.nodes.access.PropertyCacheNode.ConstantObjectPrototypeChainShapeCheckNode

All Implemented Interfaces:

com.oracle.truffle.api.nodes.NodeInterface, Cloneable

Enclosing class:

PropertyCacheNode<T extends PropertyCacheNode.CacheNode<T>>

protected static final class PropertyCacheNode.ConstantObjectPrototypeChainShapeCheckNode
extends PropertyCacheNode.AbstractSingleRealmShapeCheckNode

Checks that the given shape and all prototype shapes up to depth are valid, that the property is unchanged in these shapes, and that all prototypes are stable, all using assumptions only.

See Also:

• JSConfig.SkipFinalShapeCheck
• JSConfig.SkipPrototypeShapeCheck

Nested Class Summary

Nested classes/interfaces inherited from class com.oracle.truffle.api.nodes.Node

com.oracle.truffle.api.nodes.Node.Child, com.oracle.truffle.api.nodes.Node.Children

Field Summary

Fields inherited from class com.oracle.truffle.js.nodes.access.PropertyCacheNode.AbstractSingleRealmShapeCheckNode

assumptions

Fields inherited from class com.oracle.truffle.js.nodes.access.PropertyCacheNode.ReceiverCheckNode

shape

Method Summary

Modifier and Type	Method	Description
boolean	accept(Object thisObj)	Check receiver shape, class, or instance.
int	getDepth()
JSDynamicObject	getStore(Object thisObj)	Returns a constant reference to the resolved prototype.
protected boolean	isUnstable()

Methods inherited from class com.oracle.truffle.js.nodes.access.PropertyCacheNode.AbstractSingleRealmShapeCheckNode

isValid

Methods inherited from class com.oracle.truffle.js.nodes.access.PropertyCacheNode.ReceiverCheckNode

getShape

Methods inherited from class com.oracle.truffle.js.nodes.JavaScriptBaseNode

copy, getJSContext, getLanguage, getLanguageOptions, getRealm, hasOverloadedOperators, onReplace, reportLoopCount, reportLoopCount

Methods inherited from class com.oracle.truffle.api.nodes.Node

accept, adoptChildren, atomic, atomic, deepCopy, getChildren, getCost, getDebugProperties, getDescription, getEncapsulatingSourceSection, getLock, getParent, getRootNode, getSourceSection, insert, insert, isAdoptable, isSafelyReplaceableBy, notifyInserted, replace, replace, reportPolymorphicSpecialize, reportReplace, toString

Methods inherited from class java.lang.Object

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

Method Details

accept

public boolean accept(Object thisObj)

Description copied from class: PropertyCacheNode.ReceiverCheckNode

Check receiver shape, class, or instance.

Overrides:

accept in class PropertyCacheNode.AbstractShapeCheckNode

Returns:

whether the object is supported by the associated property cache node.

getStore

public JSDynamicObject getStore(Object thisObj)

Returns a constant reference to the resolved prototype. The prototype is held in as a weak reference that is guaranteed to be non-null if the associated constant object specialization matches the expected object.

Specified by:

getStore in class PropertyCacheNode.AbstractShapeCheckNode

Returns:

the JSDynamicObject that contains the property.

getDepth

public int getDepth()

Overrides:

getDepth in class PropertyCacheNode.AbstractShapeCheckNode

isUnstable

protected boolean isUnstable()

Overrides:

isUnstable in class PropertyCacheNode.ReceiverCheckNode

Returns:

true if a stable property assumption failed.