java.lang.Object
- org.htmlunit.corejs.javascript.ScriptableObject
- - org.htmlunit.corejs.javascript.IdScriptableObject
  - - org.htmlunit.corejs.javascript.NativeSymbol

All Implemented Interfaces:

java.io.Serializable, ConstProperties, DebuggableObject, IdFunctionCall, Scriptable, Symbol, SymbolScriptable
```
public class NativeSymbol
extends IdScriptableObject
implements Symbol
```
This is an implementation of the standard "Symbol" type that implements all of its weird properties. One of them is that some objects can have an "internal data slot" that makes them a Symbol and others cannot.

See Also:

Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from class org.htmlunit.corejs.javascript.ScriptableObject
  ScriptableObject.KeyComparator

Field Summary

Fields
Modifier and Type	Field	Description
`static java.lang.String`	`CLASS_NAME`
`private static java.lang.Object`	`CONSTRUCTOR_SLOT`
`private static int`	`ConstructorId_for`
`private static int`	`ConstructorId_keyFor`
`private static java.lang.Object`	`GLOBAL_TABLE_KEY`
`private static int`	`Id_constructor`
`private static int`	`Id_toString`
`private static int`	`Id_valueOf`
`private SymbolKey`	`key`
`private static int`	`MAX_PROTOTYPE_ID`
`private static long`	`serialVersionUID`
`private NativeSymbol`	`symbolData`
`private static int`	`SymbolId_toPrimitive`
`private static int`	`SymbolId_toStringTag`
`static java.lang.String`	`TYPE_NAME`

Fields inherited from class org.htmlunit.corejs.javascript.ScriptableObject
CONST, DONTENUM, EMPTY, PERMANENT, READONLY, UNINITIALIZED_CONST

Fields inherited from interface org.htmlunit.corejs.javascript.Scriptable
NOT_FOUND

Constructor Summary

Constructors
Modifier	Constructor	Description
`private`	`NativeSymbol(java.lang.String desc)`	This has to be used only for constructing the prototype instance.
	`NativeSymbol(NativeSymbol s)`
`(package private)`	`NativeSymbol(SymbolKey key)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static NativeSymbol`	`construct(Context cx, Scriptable scope, java.lang.Object[] args)`	Use this when we need to create symbols internally because of the convoluted way we have to construct them.
`private static void`	`createStandardSymbol(Context cx, Scriptable scope, ScriptableObject ctor, java.lang.String name, SymbolKey key)`
`boolean`	`equals(java.lang.Object x)`
`java.lang.Object`	`execIdCall(IdFunctionObject f, Context cx, Scriptable scope, Scriptable thisObj, java.lang.Object[] args)`	'thisObj' will be null if invoked as constructor, in which case * instance of Scriptable should be returned.
`protected void`	`fillConstructorProperties(IdFunctionObject ctor)`
`protected int`	`findPrototypeId(java.lang.String s)`
`protected int`	`findPrototypeId(Symbol key)`
`java.lang.String`	`getClassName()`	Return the name of the class.
`private java.util.Map<java.lang.String,NativeSymbol>`	`getGlobalMap()`
`(package private) SymbolKey`	`getKey()`
`private static NativeSymbol`	`getSelf(Context cx, Scriptable scope, java.lang.Object thisObj)`
`java.lang.String`	`getTypeOf()`	Gets the value that will be returned by calling the typeof operator on this object.
`int`	`hashCode()`
`static void`	`init(Context cx, Scriptable scope, boolean sealed)`
`protected void`	`initPrototypeId(int id)`
`private static boolean`	`isStrictMode()`
`boolean`	`isSymbol()`	Object() on a Symbol constructs an object which is NOT a symbol, but which has an "internal data slot" that is.
`private static NativeSymbol`	`js_constructor(java.lang.Object[] args)`
`private java.lang.Object`	`js_for(Context cx, Scriptable scope, java.lang.Object[] args)`
`private java.lang.Object`	`js_keyFor(Context cx, Scriptable scope, java.lang.Object[] args)`
`private java.lang.Object`	`js_valueOf()`
`void`	`put(int index, Scriptable start, java.lang.Object value)`	Sets the value of the indexed property, creating it if need be.
`void`	`put(java.lang.String name, Scriptable start, java.lang.Object value)`	Sets the value of the named property, creating it if need be.
`void`	`put(Symbol key, Scriptable start, java.lang.Object value)`	Implementation of put required by SymbolScriptable objects.
`java.lang.String`	`toString()`

Methods inherited from class org.htmlunit.corejs.javascript.IdScriptableObject
activatePrototypeMap, addIdFunctionProperty, defaultGet, defaultHas, defaultPut, defineOwnProperty, delete, delete, ensureType, exportAsJSClass, findInstanceIdInfo, findInstanceIdInfo, get, get, getAttributes, getAttributes, getIds, getInstanceIdName, getInstanceIdValue, getMaxInstanceId, getOwnPropertyDescriptor, has, has, hasPrototypeMap, initPrototypeConstructor, initPrototypeMethod, initPrototypeMethod, initPrototypeMethod, initPrototypeValue, initPrototypeValue, instanceIdInfo, setAttributes, setInstanceIdAttributes, setInstanceIdValue

Methods inherited from class org.htmlunit.corejs.javascript.ScriptableObject
addLazilyInitializedValue, applyDescriptorToAttributeBitset, associateValue, avoidObjectDetection, buildClassCtor, buildDataDescriptor, callMethod, callMethod, checkPropertyChange, checkPropertyDefinition, checkValidAttributes, defineClass, defineClass, defineClass, defineConst, defineConstProperty, defineFunctionProperties, defineOwnProperties, defineOwnProperty, defineProperty, defineProperty, defineProperty, defineProperty, defineProperty, defineProperty, defineProperty, delete, deleteProperty, deleteProperty, deleteProperty, ensureScriptable, ensureScriptableObject, ensureSymbolScriptable, equivalentValues, get, get, getAllIds, getArrayPrototype, getAssociatedValue, getAttributes, getAttributes, getAttributes, getBase, getBase, getClassPrototype, getDefaultValue, getDefaultValue, getExternalArrayData, getExternalArrayLength, getFunctionPrototype, getGeneratorFunctionPrototype, getGetterOrSetter, getGetterOrSetter, getIds, getObjectPrototype, getParentScope, getProperty, getProperty, getProperty, getPropertyIds, getPrototype, getTopLevelScope, getTopScopeValue, getTypedProperty, getTypedProperty, has, hasInstance, hasProperty, hasProperty, hasProperty, isAccessorDescriptor, isConst, isDataDescriptor, isEmpty, isExtensible, isFalse, isGenericDescriptor, isGetterOrSetter, isSealed, isTrue, preventExtensions, putConst, putConstProperty, putImpl, putProperty, putProperty, putProperty, querySlot, redefineProperty, sameValue, sealObject, setAttributes, setAttributes, setAttributes, setAttributes, setCommonDescriptorProperties, setExternalArrayData, setGetterOrSetter, setParentScope, setPrototype, size

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - serialVersionUID
```
private static final long serialVersionUID
```
    See Also:
    
    Constant Field Values
  - CLASS_NAME
```
public static final java.lang.String CLASS_NAME
```
    See Also:
    
    Constant Field Values
  - TYPE_NAME
```
public static final java.lang.String TYPE_NAME
```
    See Also:
    
    Constant Field Values
  - GLOBAL_TABLE_KEY
```
private static final java.lang.Object GLOBAL_TABLE_KEY
```
  - CONSTRUCTOR_SLOT
```
private static final java.lang.Object CONSTRUCTOR_SLOT
```
  - key
```
private final SymbolKey key
```
  - symbolData
```
private final NativeSymbol symbolData
```
  - ConstructorId_keyFor
```
private static final int ConstructorId_keyFor
```
    See Also:
    
    Constant Field Values
  - ConstructorId_for
```
private static final int ConstructorId_for
```
    See Also:
    
    Constant Field Values
  - Id_constructor
```
private static final int Id_constructor
```
    See Also:
    
    Constant Field Values
  - Id_toString
```
private static final int Id_toString
```
    See Also:
    
    Constant Field Values
  - Id_valueOf
```
private static final int Id_valueOf
```
    See Also:
    
    Constant Field Values
  - SymbolId_toStringTag
```
private static final int SymbolId_toStringTag
```
    See Also:
    
    Constant Field Values
  - SymbolId_toPrimitive
```
private static final int SymbolId_toPrimitive
```
    See Also:
    
    Constant Field Values
  - MAX_PROTOTYPE_ID
```
private static final int MAX_PROTOTYPE_ID
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - NativeSymbol
```
private NativeSymbol(java.lang.String desc)
```
    This has to be used only for constructing the prototype instance. This sets symbolData to null (see isSymbol() for more).
    
    Parameters:
    
    desc - the description
  - NativeSymbol
```
NativeSymbol(SymbolKey key)
```
  - NativeSymbol
```
public NativeSymbol(NativeSymbol s)
```
- Method Detail
  - init
```
public static void init(Context cx,
                        Scriptable scope,
                        boolean sealed)
```
  - construct
```
public static NativeSymbol construct(Context cx,
                                     Scriptable scope,
                                     java.lang.Object[] args)
```
    Use this when we need to create symbols internally because of the convoluted way we have to construct them.
  - getClassName
```
public java.lang.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
  - fillConstructorProperties
```
protected void fillConstructorProperties(IdFunctionObject ctor)
```
    Overrides:
    
    fillConstructorProperties in class IdScriptableObject
  - createStandardSymbol
```
private static void createStandardSymbol(Context cx,
                                         Scriptable scope,
                                         ScriptableObject ctor,
                                         java.lang.String name,
                                         SymbolKey key)
```
  - findPrototypeId
```
protected int findPrototypeId(java.lang.String s)
```
    Overrides:
    
    findPrototypeId in class IdScriptableObject
  - findPrototypeId
```
protected int findPrototypeId(Symbol key)
```
    Overrides:
    
    findPrototypeId in class IdScriptableObject
  - initPrototypeId
```
protected void initPrototypeId(int id)
```
    Overrides:
    
    initPrototypeId in class IdScriptableObject
  - execIdCall
```
public java.lang.Object execIdCall(IdFunctionObject f,
                                   Context cx,
                                   Scriptable scope,
                                   Scriptable thisObj,
                                   java.lang.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
  - getSelf
```
private static NativeSymbol getSelf(Context cx,
                                    Scriptable scope,
                                    java.lang.Object thisObj)
```
  - js_constructor
```
private static NativeSymbol js_constructor(java.lang.Object[] args)
```
  - js_valueOf
```
private java.lang.Object js_valueOf()
```
  - js_for
```
private java.lang.Object js_for(Context cx,
                                Scriptable scope,
                                java.lang.Object[] args)
```
  - js_keyFor
```
private java.lang.Object js_keyFor(Context cx,
                                   Scriptable scope,
                                   java.lang.Object[] args)
```
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object
  - isStrictMode
```
private static boolean isStrictMode()
```
  - put
```
public void put(java.lang.String name,
                Scriptable start,
                java.lang.Object value)
```
    Description copied from class: ScriptableObject
    
    Sets the value of the named property, creating it if need be.
    If the property was created using defineProperty, the appropriate setter method is called.
    If the property's attributes include READONLY, no action is taken. This method will actually set the property in the start object.
    
    Specified by:
    
    put in interface Scriptable
    
    Overrides:
    
    put in class IdScriptableObject
    
    Parameters:
    
    name - the name of the property
    
    start - the object whose property is being set
    
    value - value to set the property to
    
    See Also:
    
    Scriptable.has(String, Scriptable), Scriptable.get(String, Scriptable), ScriptableObject.putProperty(Scriptable, String, Object), Context.toObject(Object, Scriptable)
  - put
```
public void put(int index,
                Scriptable start,
                java.lang.Object value)
```
    Description copied from class: ScriptableObject
    
    Sets the value of the indexed property, creating it if need be.
    
    Specified by:
    
    put in interface Scriptable
    
    Overrides:
    
    put in class ScriptableObject
    
    Parameters:
    
    index - the numeric index for the property
    
    start - the object whose property is being set
    
    value - value to set the property to
    
    See Also:
    
    Scriptable.has(int, Scriptable), Scriptable.get(int, Scriptable), ScriptableObject.putProperty(Scriptable, int, Object), Context.toObject(Object, Scriptable)
  - put
```
public void put(Symbol key,
                Scriptable start,
                java.lang.Object value)
```
    Description copied from class: ScriptableObject
    
    Implementation of put required by SymbolScriptable objects.
    
    Specified by:
    
    put in interface SymbolScriptable
    
    Overrides:
    
    put in class IdScriptableObject
  - isSymbol
```
public boolean isSymbol()
```
    Object() on a Symbol constructs an object which is NOT a symbol, but which has an "internal data slot" that is. Furthermore, such an object has the Symbol prototype so this particular object is still used. Account for that here: an "Object" that was created from a Symbol has a different value of the slot.
  - getTypeOf
```
public java.lang.String getTypeOf()
```
    Description copied from class: ScriptableObject
    
    Gets the value that will be returned by calling the typeof operator on this object.
    
    Overrides:
    
    getTypeOf in class ScriptableObject
    
    Returns:
    
    default is "object" unless ScriptableObject.avoidObjectDetection() is true in which case it returns "undefined"
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class java.lang.Object
  - equals
```
public boolean equals(java.lang.Object x)
```
    Overrides:
    
    equals in class java.lang.Object
  - getKey
```
SymbolKey getKey()
```
  - getGlobalMap
```
private java.util.Map<java.lang.String,NativeSymbol> getGlobalMap()
```

Class NativeSymbol

Nested Class Summary

Nested classes/interfaces inherited from class org.htmlunit.corejs.javascript.ScriptableObject

Field Summary

Fields inherited from class org.htmlunit.corejs.javascript.ScriptableObject

Fields inherited from interface org.htmlunit.corejs.javascript.Scriptable

Constructor Summary

Method Summary

Methods inherited from class org.htmlunit.corejs.javascript.IdScriptableObject

Methods inherited from class org.htmlunit.corejs.javascript.ScriptableObject

Methods inherited from class java.lang.Object

Field Detail

serialVersionUID

CLASS_NAME

TYPE_NAME

GLOBAL_TABLE_KEY

CONSTRUCTOR_SLOT

key

symbolData

ConstructorId_keyFor

ConstructorId_for

Id_constructor

Id_toString

Id_valueOf

SymbolId_toStringTag

SymbolId_toPrimitive

MAX_PROTOTYPE_ID

Constructor Detail

NativeSymbol

NativeSymbol

NativeSymbol

Method Detail

init

construct

getClassName

fillConstructorProperties

createStandardSymbol

findPrototypeId

findPrototypeId

initPrototypeId

execIdCall

getSelf

js_constructor

js_valueOf

js_for

js_keyFor

toString

isStrictMode

put

put

put

isSymbol

getTypeOf

hashCode

equals

getKey

getGlobalMap