Class JSMetaType

java.lang.Object

com.oracle.truffle.js.runtime.interop.JSMetaType

All Implemented Interfaces:

com.oracle.truffle.api.interop.TruffleObject

public final class JSMetaType
extends Object
implements com.oracle.truffle.api.interop.TruffleObject

General meta objects for JS values and foreign objects through JavaScriptLanguageView. Note that JS objects usually return their constructor function object as the meta object.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	JSMetaType.TypeCheck

Field Summary

Fields

Modifier and Type	Field	Description
static final JSMetaType	ARRAY
static final JSMetaType	BOOLEAN
static final JSMetaType	DATE
static final JSMetaType	FUNCTION
static final JSMetaType	JS_BIGINT
static final JSMetaType	JS_NULL
static final JSMetaType	JS_PROXY
static final JSMetaType	JS_SYMBOL
static final JSMetaType	JS_UNDEFINED
static final JSMetaType	NULL
static final JSMetaType	NUMBER
static final JSMetaType	OBJECT
static final JSMetaType	STRING

Constructor Summary

Constructors

Constructor	Description
JSMetaType(String typeName, JSMetaType.TypeCheck isInstance)

Method Summary

Modifier and Type	Method	Description
String	getTypeName()
boolean	isInstance(Object instance, com.oracle.truffle.api.interop.InteropLibrary interop)	Checks whether instance is of this meta type.
String	toString()

Methods inherited from class java.lang.Object

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

Field Details

NULL

public static final JSMetaType NULL

BOOLEAN

public static final JSMetaType BOOLEAN

STRING

public static final JSMetaType STRING

NUMBER

public static final JSMetaType NUMBER

FUNCTION

public static final JSMetaType FUNCTION

DATE

public static final JSMetaType DATE

ARRAY

public static final JSMetaType ARRAY

OBJECT

public static final JSMetaType OBJECT

JS_NULL

public static final JSMetaType JS_NULL

JS_UNDEFINED

public static final JSMetaType JS_UNDEFINED

JS_BIGINT

public static final JSMetaType JS_BIGINT

JS_SYMBOL

public static final JSMetaType JS_SYMBOL

JS_PROXY

public static final JSMetaType JS_PROXY

Constructor Details

JSMetaType

public JSMetaType(String typeName,
 JSMetaType.TypeCheck isInstance)

Method Details

isInstance

public boolean isInstance(Object instance,
 com.oracle.truffle.api.interop.InteropLibrary interop)

Checks whether instance is of this meta type. If used on the fast path the JSMetaType is required to be a PE-constant.

getTypeName

public String getTypeName()

toString

public String toString()

Overrides:

toString in class Object