com.oracle.truffle.js.runtime.objects

Class Nullish

java.lang.Object

com.oracle.truffle.api.object.DynamicObject

com.oracle.truffle.js.runtime.objects.JSDynamicObject

com.oracle.truffle.js.runtime.objects.Nullish

All Implemented Interfaces:

com.oracle.truffle.api.interop.TruffleObject

public final class Nullish
extends JSDynamicObject

Nested Class Summary

Nested classes/interfaces inherited from class com.oracle.truffle.js.runtime.objects.JSDynamicObject

JSDynamicObject.IsIdenticalOrUndefined

Nested classes/interfaces inherited from class com.oracle.truffle.api.object.DynamicObject

com.oracle.truffle.api.object.DynamicObject.DynamicField

Constructor Summary

Constructors

Constructor and Description
Nullish()

Method Summary

Modifier and Type	Method and Description
com.oracle.truffle.api.strings.TruffleString	defaultToString() Follows 19.1.3.6 Object.prototype.toString(), basically: "[object " + [[Symbol.toStringTag]] + "]" or typically "[object Object]" (for non built-in types) if [[Symbol.toStringTag]] is not present.
boolean	defineOwnProperty(Object key, PropertyDescriptor desc, boolean doThrow) 9.1.6 [[DefineOwnProperty]] (P, Desc).
boolean	delete(long index, boolean isStrict)
boolean	delete(Object index, boolean isStrict) 9.1.10 [[Delete]] (P).
com.oracle.truffle.api.strings.TruffleString	getClassName() The [[Class]] internal property.
Object	getHelper(Object thisObj, long index, com.oracle.truffle.api.nodes.Node encapsulatingNode)
Object	getHelper(Object thisObj, Object name, com.oracle.truffle.api.nodes.Node encapsulatingNode)
Object	getMethodHelper(Object thisObj, Object name, com.oracle.truffle.api.nodes.Node encapsulatingNode)
Object	getOwnHelper(Object thisObj, long index, com.oracle.truffle.api.nodes.Node encapsulatingNode)
Object	getOwnHelper(Object thisObj, Object name, com.oracle.truffle.api.nodes.Node encapsulatingNode)
PropertyDescriptor	getOwnProperty(Object propertyKey) 9.1.5 [[GetOwnProperty]] (P).
List<Object>	getOwnPropertyKeys(boolean string, boolean symbols) GetOwnPropertyKeys (O, type).
JSDynamicObject	getPrototypeOf() 9.1.1 [[GetPrototypeOf]] ().
boolean	hasOnlyShapeProperties() If true, JSDynamicObject.ownPropertyKeys() and JSShape.getProperties(com.oracle.truffle.api.object.Shape) enumerate the same keys.
boolean	hasOwnProperty(long propIdx)
boolean	hasOwnProperty(Object propName)
boolean	hasProperty(long propIdx)
boolean	hasProperty(Object propName) 9.1.7 [[HasProperty]] (P).
boolean	isExtensible() 9.1.3 [[IsExtensible]] ().
boolean	preventExtensions(boolean doThrow) 9.1.4 [[PreventExtensions]] ().
boolean	set(long index, Object value, Object receiver, boolean isStrict, com.oracle.truffle.api.nodes.Node encapsulatingNode)
boolean	set(Object key, Object value, Object receiver, boolean isStrict, com.oracle.truffle.api.nodes.Node encapsulatingNode) 9.1.9 [[Set]] (P, V, Receiver).
boolean	setPrototypeOf(JSDynamicObject newPrototype) 9.1.2 [[SetPrototypeOf]] (V).
com.oracle.truffle.api.strings.TruffleString	toDisplayStringImpl(boolean allowSideEffects, ToDisplayStringFormat format, int depth) A more informative toString variant, mainly used for error messages.
String	toString()

Methods inherited from class com.oracle.truffle.js.runtime.objects.JSDynamicObject

getBuiltinToStringTag, getDynamicType, getIntOrDefault, getJSClass, getJSClass, getJSContext, getJSContext, getJSSharedData, getKeyArray, getObjectFlags, getOrDefault, getOrNull, getProperty, getPropertyArray, getPropertyFlags, getValue, getValue, hasProperty, identityHashCode, isJSDynamicObject, ownPropertyKeys, removeKey, setIntegrityLevel, setJSClass, setObjectFlags, setPropertyFlags, testIntegrityLevel, testProperties, updatePropertyFlags

Methods inherited from class com.oracle.truffle.api.object.DynamicObject

clone, getShape

Methods inherited from class java.lang.Object

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

Constructor Detail

Nullish

public Nullish()

Method Detail

getClassName

public com.oracle.truffle.api.strings.TruffleString getClassName()

Description copied from class: JSDynamicObject

The [[Class]] internal property. For ES5, this is the second part of what Object.prototype.toString.call(myObj) returns, e.g. "[object Array]".

Specified by:

getClassName in class JSDynamicObject

toDisplayStringImpl

public com.oracle.truffle.api.strings.TruffleString toDisplayStringImpl(boolean allowSideEffects,
                                                                        ToDisplayStringFormat format,
                                                                        int depth)

Description copied from class: JSDynamicObject

A more informative toString variant, mainly used for error messages.

Specified by:

toDisplayStringImpl in class JSDynamicObject

format - formatting parameters

depth - current nesting depth

defaultToString

public com.oracle.truffle.api.strings.TruffleString defaultToString()

Description copied from class: JSDynamicObject

Follows 19.1.3.6 Object.prototype.toString(), basically: "[object " + [[Symbol.toStringTag]] + "]" or typically "[object Object]" (for non built-in types) if [[Symbol.toStringTag]] is not present.

For ES5, if follows 15.2.4.2 Object.prototype.toString(), basically: "[object " + [[Class]] + "]".

Overrides:

defaultToString in class JSDynamicObject

See Also:

JSDynamicObject.getBuiltinToStringTag()

getOwnHelper

public Object getOwnHelper(Object thisObj,
                           Object name,
                           com.oracle.truffle.api.nodes.Node encapsulatingNode)

Specified by:

getOwnHelper in class JSDynamicObject

getOwnHelper

public Object getOwnHelper(Object thisObj,
                           long index,
                           com.oracle.truffle.api.nodes.Node encapsulatingNode)

Specified by:

getOwnHelper in class JSDynamicObject

getMethodHelper

public Object getMethodHelper(Object thisObj,
                              Object name,
                              com.oracle.truffle.api.nodes.Node encapsulatingNode)

Specified by:

getMethodHelper in class JSDynamicObject

getHelper

public Object getHelper(Object thisObj,
                        Object name,
                        com.oracle.truffle.api.nodes.Node encapsulatingNode)

Specified by:

getHelper in class JSDynamicObject

getHelper

public Object getHelper(Object thisObj,
                        long index,
                        com.oracle.truffle.api.nodes.Node encapsulatingNode)

Specified by:

getHelper in class JSDynamicObject

hasOwnProperty

public boolean hasOwnProperty(Object propName)

Specified by:

hasOwnProperty in class JSDynamicObject

hasOwnProperty

public boolean hasOwnProperty(long propIdx)

Specified by:

hasOwnProperty in class JSDynamicObject

hasProperty

public boolean hasProperty(Object propName)

Description copied from class: JSDynamicObject

9.1.7 [[HasProperty]] (P).

Specified by:

hasProperty in class JSDynamicObject

hasProperty

public boolean hasProperty(long propIdx)

Specified by:

hasProperty in class JSDynamicObject

set

public boolean set(Object key,
                   Object value,
                   Object receiver,
                   boolean isStrict,
                   com.oracle.truffle.api.nodes.Node encapsulatingNode)

Description copied from class: JSDynamicObject

9.1.9 [[Set]] (P, V, Receiver).

Specified by:

set in class JSDynamicObject

set

public boolean set(long index,
                   Object value,
                   Object receiver,
                   boolean isStrict,
                   com.oracle.truffle.api.nodes.Node encapsulatingNode)

Specified by:

set in class JSDynamicObject

delete

public boolean delete(Object index,
                      boolean isStrict)

Description copied from class: JSDynamicObject

9.1.10 [[Delete]] (P).

Specified by:

delete in class JSDynamicObject

delete

public boolean delete(long index,
                      boolean isStrict)

Specified by:

delete in class JSDynamicObject

getOwnPropertyKeys

public List<Object> getOwnPropertyKeys(boolean string,
                                       boolean symbols)

Description copied from class: JSDynamicObject

GetOwnPropertyKeys (O, type).

Specified by:

getOwnPropertyKeys in class JSDynamicObject

Returns:

a List of the keys of all own properties of that object with the specified types

defineOwnProperty

public boolean defineOwnProperty(Object key,
                                 PropertyDescriptor desc,
                                 boolean doThrow)

Description copied from class: JSDynamicObject

9.1.6 [[DefineOwnProperty]] (P, Desc).

Specified by:

defineOwnProperty in class JSDynamicObject

preventExtensions

public boolean preventExtensions(boolean doThrow)

Description copied from class: JSDynamicObject

9.1.4 [[PreventExtensions]] ().

Specified by:

preventExtensions in class JSDynamicObject

isExtensible

public boolean isExtensible()

Description copied from class: JSDynamicObject

9.1.3 [[IsExtensible]] ().

Specified by:

isExtensible in class JSDynamicObject

hasOnlyShapeProperties

public boolean hasOnlyShapeProperties()

Description copied from class: JSDynamicObject

If true, JSDynamicObject.ownPropertyKeys() and JSShape.getProperties(com.oracle.truffle.api.object.Shape) enumerate the same keys.

Specified by:

hasOnlyShapeProperties in class JSDynamicObject

getPrototypeOf

public JSDynamicObject getPrototypeOf()

Description copied from class: JSDynamicObject

9.1.1 [[GetPrototypeOf]] ().

Specified by:

getPrototypeOf in class JSDynamicObject

setPrototypeOf

public boolean setPrototypeOf(JSDynamicObject newPrototype)

Description copied from class: JSDynamicObject

9.1.2 [[SetPrototypeOf]] (V).

Specified by:

setPrototypeOf in class JSDynamicObject

getOwnProperty

public PropertyDescriptor getOwnProperty(Object propertyKey)

Description copied from class: JSDynamicObject

9.1.5 [[GetOwnProperty]] (P).

Specified by:

getOwnProperty in class JSDynamicObject

toString

public String toString()

Overrides:

toString in class Object