Package org.mozilla.javascript

Class NativeWeakMap

java.lang.Object

org.mozilla.javascript.ScriptableObject

org.mozilla.javascript.IdScriptableObject

org.mozilla.javascript.NativeWeakMap

All Implemented Interfaces:

Serializable, ConstProperties, DebuggableObject, IdFunctionCall, Scriptable, SymbolScriptable

public class NativeWeakMap
extends IdScriptableObject

This is an implementation of the ES6 WeakMap class. As per the spec, keys must be ordinary objects. Since there is no defined "equality" for objects, comparisions are done strictly by object equality. Both ES6 and the java.util.WeakHashMap class have the same basic structure -- entries are removed automatically when the sole remaining reference to the key is a weak reference. Therefore, we can use WeakHashMap as the basis of this implementation and preserve the same semantics.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.mozilla.javascript.ScriptableObject

ScriptableObject.KeyComparator

Field Summary

Fields inherited from class org.mozilla.javascript.ScriptableObject

CONST, DONTENUM, EMPTY, PERMANENT, READONLY, UNINITIALIZED_CONST

Fields inherited from interface org.mozilla.javascript.Scriptable

NOT_FOUND

Constructor Summary

Constructors

Constructor	Description
NativeWeakMap()

Method Summary

Modifier and Type	Method	Description
Object	execIdCall(IdFunctionObject f, Context cx, Scriptable scope, Scriptable thisObj, Object[] args)	'thisObj' will be null if invoked as constructor, in which case instance of Scriptable should be returned.
String	getClassName()	Return the name of the class.

Methods inherited from class org.mozilla.javascript.IdScriptableObject

activatePrototypeMap, defineOwnProperty, delete, delete, exportAsJSClass, get, get, getAttributes, getAttributes, has, has, hasPrototypeMap, initPrototypeConstructor, initPrototypeMethod, initPrototypeMethod, initPrototypeMethod, initPrototypeValue, initPrototypeValue, put, put, setAttributes

Methods inherited from class org.mozilla.javascript.ScriptableObject

associateValue, avoidObjectDetection, callMethod, callMethod, defineClass, defineClass, defineClass, defineConst, defineConstProperty, defineFunctionProperties, defineOwnProperties, defineProperty, defineProperty, defineProperty, defineProperty, defineProperty, delete, deleteProperty, deleteProperty, get, get, getAllIds, getArrayPrototype, getAssociatedValue, getAttributes, getAttributes, getAttributes, getClassPrototype, getDefaultValue, getDefaultValue, getExternalArrayData, getExternalArrayLength, getFunctionPrototype, getGeneratorFunctionPrototype, getGetterOrSetter, getIds, getObjectPrototype, getParentScope, getProperty, getProperty, getProperty, getPropertyIds, getPrototype, getTopLevelScope, getTopScopeValue, getTypedProperty, getTypedProperty, getTypeOf, has, hasInstance, hasProperty, hasProperty, hasProperty, isConst, isEmpty, isExtensible, isSealed, preventExtensions, put, putConst, putConstProperty, putProperty, putProperty, putProperty, redefineProperty, sealObject, setAttributes, setAttributes, setAttributes, setAttributes, setExternalArrayData, setGetterOrSetter, setParentScope, setPrototype, size

Methods inherited from class java.lang.Object

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

Constructor Details

NativeWeakMap

public NativeWeakMap()

Method Details

getClassName

public String getClassName()

Description copied from class: ScriptableObject

Return the name of the class. This is typically the same name as the constructor. Classes extending ScriptableObject must implement this abstract method.

Specified by:

getClassName in interface Scriptable

Specified by:

getClassName in class ScriptableObject

execIdCall

public Object execIdCall(IdFunctionObject f,
 Context cx,
 Scriptable scope,
 Scriptable thisObj,
 Object[] args)

Description copied from class: IdScriptableObject

'thisObj' will be null if invoked as constructor, in which case instance of Scriptable should be returned.

Specified by:

execIdCall in interface IdFunctionCall

Overrides:

execIdCall in class IdScriptableObject