Class DynamicObject.ContainsKeyNode

java.lang.Object

com.oracle.truffle.api.nodes.Node

com.oracle.truffle.api.object.DynamicObject.ContainsKeyNode

All Implemented Interfaces:

NodeInterface, Cloneable

Enclosing class:

DynamicObject

public abstract static class DynamicObject.ContainsKeyNode
extends Node

Checks if this object contains a property with the given key.

Since:

25.1

See Also:

• execute(DynamicObject, Object)

Nested Class Summary

Nested classes/interfaces inherited from class Node

Node.Child, Node.Children

Method Summary

Modifier and Type	Method	Description
static DynamicObject.ContainsKeyNode	create()
abstract boolean	execute(DynamicObject receiver, Object key)	Returns true if this object contains a property with the given key.
static DynamicObject.ContainsKeyNode	getUncached()

Methods inherited from class Node

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

Methods inherited from class Object

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

Method Details

execute

public abstract boolean execute(DynamicObject receiver,
 Object key)

Returns true if this object contains a property with the given key.

Usage example:

@ExportMessage(name = "isMemberReadable")
@ExportMessage(name = "isMemberRemovable")
boolean isMemberReadable(String member,
                @Cached @Shared DynamicObject.ContainsKeyNode containsKeyNode) {
    return containsKeyNode.execute(this, member);
}

Member name equality check omitted for brevity.

Parameters:

key - the property key, compared by identity (==), not equality (equals). See DynamicObject for more information.

Returns:

true if the object contains a property with this key, else false

create

public static DynamicObject.ContainsKeyNode create()

Since:

25.1

getUncached

public static DynamicObject.ContainsKeyNode getUncached()

Since:

25.1