Class JSFunction

java.lang.Object

com.oracle.truffle.js.runtime.builtins.JSClass

com.oracle.truffle.js.runtime.builtins.JSNonProxy

com.oracle.truffle.js.runtime.builtins.JSFunction

public final class JSFunction
extends JSNonProxy

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	JSFunction.ArgumentsProxyProperty	V8 compatibility mode: retrieves the function's arguments from the stack.
static enum	JSFunction.AsyncGeneratorState
static final class	JSFunction.CallerProxyProperty	V8 compatibility mode: retrieves the function's caller from the stack.
static final class	JSFunction.ClassPrototypeProxyProperty
static final class	JSFunction.FunctionLengthPropertyProxy
static final class	JSFunction.FunctionNamePropertyProxy
static enum	JSFunction.GeneratorState

Field Summary

Fields

Modifier and Type	Field	Description
static final com.oracle.truffle.api.strings.TruffleString	ARGUMENTS
static final PropertyProxy	ARGUMENTS_PROXY
static final com.oracle.truffle.api.strings.TruffleString	ASYNC_FROM_SYNC_ITERATOR_PROTOTYPE_NAME
static final com.oracle.truffle.api.strings.TruffleString	ASYNC_FUNCTION_NAME
static final com.oracle.truffle.api.strings.TruffleString	ASYNC_GENERATOR_FUNCTION_NAME
static final com.oracle.truffle.api.strings.TruffleString	ASYNC_GENERATOR_NAME
static final String	BUILTIN_SOURCE_NAME
static final com.oracle.truffle.api.source.SourceSection	BUILTIN_SOURCE_SECTION
static final com.oracle.truffle.api.strings.TruffleString	CALLER
static final PropertyProxy	CALLER_PROXY
static final com.oracle.truffle.api.object.HiddenKey	CLASS_ELEMENTS_ID
static final com.oracle.truffle.api.object.HiddenKey	CLASS_INITIALIZERS_ID
static final com.oracle.truffle.api.strings.TruffleString	CLASS_NAME
static final Object	CLASS_PROTOTYPE_PLACEHOLDER	Placeholder for lazy initialization of the prototype property.
static final JSDynamicObject	CONSTRUCT	Construct token.
static final com.oracle.truffle.api.object.HiddenKey	DEBUG_SCOPE_ID	Slot for scope object passed to inline parsed scripts.
static final com.oracle.truffle.api.strings.TruffleString	ENUMERATE_ITERATOR_PROTOTYPE_NAME
static final com.oracle.truffle.api.strings.TruffleString	GENERATOR_FUNCTION_NAME
static final com.oracle.truffle.api.strings.TruffleString	GENERATOR_NAME
static final com.oracle.truffle.api.object.HiddenKey	HOME_OBJECT_ID
static final JSFunction	INSTANCE
static final com.oracle.truffle.api.strings.TruffleString	LENGTH
static final PropertyProxy	LENGTH_PROXY
static final com.oracle.truffle.api.strings.TruffleString	NAME
static final PropertyProxy	NAME_PROXY
static final com.oracle.truffle.api.strings.TruffleString	ORDINARY_HAS_INSTANCE
static final com.oracle.truffle.api.object.HiddenKey	PRIVATE_BRAND_ID
static final String	PROGRAM_FUNCTION_NAME
static final com.oracle.truffle.api.strings.TruffleString	PROTOTYPE_NAME
static final PropertyProxy	PROTOTYPE_PROXY
static final com.oracle.truffle.api.strings.TruffleString	TS_BUILTIN_SOURCE_NAME
static final com.oracle.truffle.api.strings.TruffleString	TYPE_NAME

Fields inherited from class JSNonProxy

GET_SYMBOL_SPECIES_NAME

Method Summary

Modifier and Type	Method	Description
static void	addRestrictedFunctionProperties(JSRealm realm, JSDynamicObject obj)
static JSFunctionObject	bind(JSRealm realm, JSFunctionObject thisFnObj, Object thisArg, Object[] boundArguments)
static JSFunctionObject	boundFunctionCreate(JSContext context, JSFunctionObject boundTargetFunction, Object boundThis, Object[] boundArguments, JSDynamicObject proto, com.oracle.truffle.api.profiles.InlinedConditionProfile isConstructorProfile, com.oracle.truffle.api.profiles.InlinedConditionProfile isAsyncProfile, com.oracle.truffle.api.profiles.InlinedConditionProfile setProtoProfile, com.oracle.truffle.api.nodes.Node node)
static Object	call(JSFunctionObject functionObject, Object thisObject, Object[] argumentValues)
static Object	call(Object[] jsArguments)
static Object	construct(JSFunctionObject functionObject, Object[] argumentValues)
static JSFunctionObject	create(JSRealm realm, JSFunctionData functionData)
static JSFunctionObject	create(JSRealm realm, JSFunctionData functionData, com.oracle.truffle.api.frame.MaterializedFrame enclosingFrame)
static JSObject	createAsyncFromSyncIteratorPrototype(JSRealm realm)	Creates the %AsyncFromSyncIteratorPrototype% object (ES2018 11.1.3.2).
static JSConstructor	createAsyncFunctionConstructor(JSRealm realm)
static JSObject	createAsyncFunctionPrototype(JSRealm realm, JSDynamicObject constructor)
static JSConstructor	createAsyncGeneratorFunctionConstructor(JSRealm realm)
static JSObject	createAsyncGeneratorFunctionPrototype(JSRealm realm, JSDynamicObject constructor)
static JSObject	createAsyncIteratorPrototype(JSRealm realm)	Creates the %AsyncIteratorPrototype% object (ES2018 11.1.2).
static JSFunctionObject	createBound(JSContext context, JSRealm realm, JSFunctionData functionData, Object boundTargetFunction, Object boundThis, Object[] boundArguments)
static com.oracle.truffle.api.nodes.RootNode	createBoundRootNode(JSContext context, boolean construct, boolean newTarget)
static com.oracle.truffle.api.source.SourceSection	createBuiltinSourceSection(String name)
static JSFunctionObject	createEmptyFunction(JSRealm realm)
static JSFunctionData	createEmptyFunctionData(JSContext context)
static JSDynamicObject	createEnumerateIteratorPrototype(JSRealm realm)
static JSDynamicObject	createForInIteratorPrototype(JSRealm realm)
static JSFunctionObject	createFunctionConstructor(JSRealm realm)
static JSFunctionObject	createFunctionPrototype(JSRealm realm, JSDynamicObject objectPrototype)
static JSConstructor	createGeneratorFunctionConstructor(JSRealm realm)
static JSObject	createGeneratorFunctionPrototype(JSRealm realm, JSDynamicObject constructor)
static JSFunctionObject	createLexicalThis(JSRealm realm, JSFunctionData functionData, com.oracle.truffle.api.frame.MaterializedFrame enclosingFrame, Object lexicalThis)
static JSFunctionObject	createNamedEmptyFunction(JSRealm realm, com.oracle.truffle.api.strings.TruffleString name)
static JSFunctionData	createNamedEmptyFunctionData(JSContext context, com.oracle.truffle.api.strings.TruffleString name)
static JSDynamicObject	createOrdinaryHasInstanceFunction(JSRealm realm)
static JSFunctionObject	createWithPrototype(JSFunctionFactory factory, JSRealm realm, JSFunctionData functionData, com.oracle.truffle.api.frame.MaterializedFrame enclosingFrame, JSDynamicObject prototype)
static JSFunctionObject	createWithPrototype(JSRealm realm, JSFunctionData functionData, JSDynamicObject prototype)
static JSFunctionObject	createWrapped(JSContext context, JSRealm realm, JSFunctionData functionData, Object wrappedTargetFunction)
static void	fillFunctionPrototype(JSRealm realm)
static com.oracle.truffle.api.source.Source	getCallerSource()
static com.oracle.truffle.api.CallTarget	getCallTarget(JSFunctionObject obj)
static Object	getClassPrototype(JSFunctionObject thisObj)
static Object	getClassPrototypeInitialized(JSFunctionObject thisObj)
static com.oracle.truffle.api.CallTarget	getConstructNewTarget(JSFunctionObject obj)
static com.oracle.truffle.api.CallTarget	getConstructTarget(JSFunctionObject obj)
static com.oracle.truffle.api.frame.MaterializedFrame	getEnclosingFrame(JSFunctionObject obj)
static com.oracle.truffle.api.nodes.RootNode	getFrameRootNode(com.oracle.truffle.api.frame.FrameInstance frameInstance)
static JSFunctionData	getFunctionData(JSFunctionObject obj)
static int	getLength(JSFunctionObject obj)
static Object	getLexicalThis(JSFunctionObject thisObj)
static com.oracle.truffle.api.strings.TruffleString	getName(JSFunctionObject obj)
static JSRealm	getRealm(JSFunctionObject obj)
static JSRealm	getRealm(JSFunctionObject functionObj, JSContext context, com.oracle.truffle.api.nodes.Node node)	Version optimized for a single Realm.
boolean	hasOnlyShapeProperties(JSDynamicObject obj)	If true, JSClass.ownPropertyKeys(JSDynamicObject) and JSShape.getPropertyKeyList(Shape, boolean, boolean) enumerate the same keys.
static boolean	isAsyncFunction(JSFunctionObject function)
static boolean	isBoundFunction(Object function)
static boolean	isBuiltin(JSFunctionObject obj)
static boolean	isBuiltinSourceSection(com.oracle.truffle.api.source.SourceSection sourceSection)
static boolean	isBuiltinThatShouldNotAppearInStackTrace(JSRealm realm, JSDynamicObject function)
static boolean	isClassPrototypeInitialized(JSFunctionObject thisObj)
static boolean	isConstructor(JSFunctionObject obj)
static boolean	isConstructor(Object obj)
static boolean	isGenerator(JSFunctionObject obj)
static boolean	isJSFunction(Object obj)
static boolean	isStrict(JSFunctionObject obj)
static boolean	isStrictBuiltin(JSFunctionObject function, JSRealm realm)
static com.oracle.truffle.api.object.Shape	makeFunctionShape(JSContext context, JSDynamicObject prototype, boolean isGenerator, boolean isAsync)
static com.oracle.truffle.api.object.Shape	makeInitialEnumerateIteratorShape(JSContext context, JSDynamicObject enumerateIteratorPrototype)
static boolean	needsParentFrame(JSFunctionObject obj)
static void	setBoundFunctionName(JSDynamicObject boundFunction, com.oracle.truffle.api.strings.TruffleString targetName)
static void	setClassPrototype(JSFunctionObject thisObj, Object value)
static void	setFunctionLength(JSDynamicObject functionObj, Number length)
static void	setFunctionName(JSDynamicObject functionObj, com.oracle.truffle.api.strings.TruffleString name)

Methods inherited from class JSNonProxy

checkProtoCycle, createSymbolSpeciesGetterFunction, defineOwnProperty, delete, delete, deletePropertyDefault, getHelper, getHelper, getMethodHelper, getOwnHelper, getOwnHelper, getOwnProperty, getOwnPropertyKeys, getPrototypeOf, hasOwnProperty, hasOwnProperty, hasProperty, hasProperty, invokeAccessorPropertySetter, isExtensible, ordinaryGetOwnProperty, ordinaryGetOwnPropertyIntl, ordinaryIsExtensible, ordinaryOwnPropertyKeys, ordinaryOwnPropertyKeys, ordinaryOwnPropertyKeysSlow, ordinaryPreventExtensions, ordinarySet, ordinarySetIndex, ordinarySetWithReceiver, performOrdinarySetWithOwnDescriptor, preventExtensions, putConstructorSpeciesGetter, set, set, setIntegrityLevelFast, setPropertySlow, setPrototypeOf, testIntegrityLevelFast, usesOrdinaryGetOwnProperty, usesOrdinaryIsExtensible

Methods inherited from class JSClass

filterOwnPropertyKeys, get, get, getIntrinsicDefaultProto, isInstance, isInstance, isInstance, isInstance, makeInitialShape, ownPropertyKeys, toString

Methods inherited from class Object

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

Field Details

TYPE_NAME

public static final com.oracle.truffle.api.strings.TruffleString TYPE_NAME

CLASS_NAME

public static final com.oracle.truffle.api.strings.TruffleString CLASS_NAME

PROTOTYPE_NAME

public static final com.oracle.truffle.api.strings.TruffleString PROTOTYPE_NAME

GENERATOR_FUNCTION_NAME

public static final com.oracle.truffle.api.strings.TruffleString GENERATOR_FUNCTION_NAME

GENERATOR_NAME

public static final com.oracle.truffle.api.strings.TruffleString GENERATOR_NAME

ASYNC_FUNCTION_NAME

public static final com.oracle.truffle.api.strings.TruffleString ASYNC_FUNCTION_NAME

ASYNC_GENERATOR_FUNCTION_NAME

public static final com.oracle.truffle.api.strings.TruffleString ASYNC_GENERATOR_FUNCTION_NAME

ASYNC_GENERATOR_NAME

public static final com.oracle.truffle.api.strings.TruffleString ASYNC_GENERATOR_NAME

ENUMERATE_ITERATOR_PROTOTYPE_NAME

public static final com.oracle.truffle.api.strings.TruffleString ENUMERATE_ITERATOR_PROTOTYPE_NAME

CALLER

public static final com.oracle.truffle.api.strings.TruffleString CALLER

ARGUMENTS

public static final com.oracle.truffle.api.strings.TruffleString ARGUMENTS

LENGTH

public static final com.oracle.truffle.api.strings.TruffleString LENGTH

NAME

public static final com.oracle.truffle.api.strings.TruffleString NAME

ORDINARY_HAS_INSTANCE

public static final com.oracle.truffle.api.strings.TruffleString ORDINARY_HAS_INSTANCE

PROGRAM_FUNCTION_NAME

public static final String PROGRAM_FUNCTION_NAME

See Also:

• Constant Field Values

BUILTIN_SOURCE_NAME

public static final String BUILTIN_SOURCE_NAME

See Also:

• Constant Field Values

TS_BUILTIN_SOURCE_NAME

public static final com.oracle.truffle.api.strings.TruffleString TS_BUILTIN_SOURCE_NAME

BUILTIN_SOURCE_SECTION

public static final com.oracle.truffle.api.source.SourceSection BUILTIN_SOURCE_SECTION

ASYNC_FROM_SYNC_ITERATOR_PROTOTYPE_NAME

public static final com.oracle.truffle.api.strings.TruffleString ASYNC_FROM_SYNC_ITERATOR_PROTOTYPE_NAME

PROTOTYPE_PROXY

public static final PropertyProxy PROTOTYPE_PROXY

LENGTH_PROXY

public static final PropertyProxy LENGTH_PROXY

NAME_PROXY

public static final PropertyProxy NAME_PROXY

ARGUMENTS_PROXY

public static final PropertyProxy ARGUMENTS_PROXY

CALLER_PROXY

public static final PropertyProxy CALLER_PROXY

CLASS_PROTOTYPE_PLACEHOLDER

public static final Object CLASS_PROTOTYPE_PLACEHOLDER

Placeholder for lazy initialization of the prototype property.

INSTANCE

public static final JSFunction INSTANCE

HOME_OBJECT_ID

public static final com.oracle.truffle.api.object.HiddenKey HOME_OBJECT_ID

CLASS_ELEMENTS_ID

public static final com.oracle.truffle.api.object.HiddenKey CLASS_ELEMENTS_ID

CLASS_INITIALIZERS_ID

public static final com.oracle.truffle.api.object.HiddenKey CLASS_INITIALIZERS_ID

PRIVATE_BRAND_ID

public static final com.oracle.truffle.api.object.HiddenKey PRIVATE_BRAND_ID

DEBUG_SCOPE_ID

public static final com.oracle.truffle.api.object.HiddenKey DEBUG_SCOPE_ID

Slot for scope object passed to inline parsed scripts.

CONSTRUCT

public static final JSDynamicObject CONSTRUCT

Construct token. Passed from the new node as this argument to built-in functions to differentiate between a constructor and a normal call (i.e., [[Construct]] and [[Call]] internal methods, see ES5 13.2.1 and 13.2.2). Must not be passed anywhere else.

Method Details

getCallTarget

public static com.oracle.truffle.api.CallTarget getCallTarget(JSFunctionObject obj)

getEnclosingFrame

public static com.oracle.truffle.api.frame.MaterializedFrame getEnclosingFrame(JSFunctionObject obj)

getFunctionData

public static JSFunctionData getFunctionData(JSFunctionObject obj)

getRealm

public static JSRealm getRealm(JSFunctionObject obj)

getRealm

public static JSRealm getRealm(JSFunctionObject functionObj,
 JSContext context,
 com.oracle.truffle.api.nodes.Node node)

Version optimized for a single Realm.

create

public static JSFunctionObject create(JSRealm realm,
 JSFunctionData functionData)

create

public static JSFunctionObject create(JSRealm realm,
 JSFunctionData functionData,
 com.oracle.truffle.api.frame.MaterializedFrame enclosingFrame)

createWithPrototype

public static JSFunctionObject createWithPrototype(JSRealm realm,
 JSFunctionData functionData,
 JSDynamicObject prototype)

createWithPrototype

public static JSFunctionObject createWithPrototype(JSFunctionFactory factory,
 JSRealm realm,
 JSFunctionData functionData,
 com.oracle.truffle.api.frame.MaterializedFrame enclosingFrame,
 JSDynamicObject prototype)

createLexicalThis

public static JSFunctionObject createLexicalThis(JSRealm realm,
 JSFunctionData functionData,
 com.oracle.truffle.api.frame.MaterializedFrame enclosingFrame,
 Object lexicalThis)

createBound

public static JSFunctionObject createBound(JSContext context,
 JSRealm realm,
 JSFunctionData functionData,
 Object boundTargetFunction,
 Object boundThis,
 Object[] boundArguments)

createWrapped

public static JSFunctionObject createWrapped(JSContext context,
 JSRealm realm,
 JSFunctionData functionData,
 Object wrappedTargetFunction)

getName

public static com.oracle.truffle.api.strings.TruffleString getName(JSFunctionObject obj)

call

public static Object call(JSFunctionObject functionObject,
 Object thisObject,
 Object[] argumentValues)

call

public static Object call(Object[] jsArguments)

construct

public static Object construct(JSFunctionObject functionObject,
 Object[] argumentValues)

bind

public static JSFunctionObject bind(JSRealm realm,
 JSFunctionObject thisFnObj,
 Object thisArg,
 Object[] boundArguments)

boundFunctionCreate

public static JSFunctionObject boundFunctionCreate(JSContext context,
 JSFunctionObject boundTargetFunction,
 Object boundThis,
 Object[] boundArguments,
 JSDynamicObject proto,
 com.oracle.truffle.api.profiles.InlinedConditionProfile isConstructorProfile,
 com.oracle.truffle.api.profiles.InlinedConditionProfile isAsyncProfile,
 com.oracle.truffle.api.profiles.InlinedConditionProfile setProtoProfile,
 com.oracle.truffle.api.nodes.Node node)

setFunctionLength

public static void setFunctionLength(JSDynamicObject functionObj,
 Number length)

setFunctionName

public static void setFunctionName(JSDynamicObject functionObj,
 com.oracle.truffle.api.strings.TruffleString name)

setBoundFunctionName

public static void setBoundFunctionName(JSDynamicObject boundFunction,
 com.oracle.truffle.api.strings.TruffleString targetName)

isStrict

public static boolean isStrict(JSFunctionObject obj)

isBuiltin

public static boolean isBuiltin(JSFunctionObject obj)

isConstructor

public static boolean isConstructor(JSFunctionObject obj)

isConstructor

public static boolean isConstructor(Object obj)

isGenerator

public static boolean isGenerator(JSFunctionObject obj)

needsParentFrame

public static boolean needsParentFrame(JSFunctionObject obj)

getLength

public static int getLength(JSFunctionObject obj)

isClassPrototypeInitialized

public static boolean isClassPrototypeInitialized(JSFunctionObject thisObj)

isBoundFunction

public static boolean isBoundFunction(Object function)

isAsyncFunction

public static boolean isAsyncFunction(JSFunctionObject function)

getLexicalThis

public static Object getLexicalThis(JSFunctionObject thisObj)

getClassPrototypeInitialized

public static Object getClassPrototypeInitialized(JSFunctionObject thisObj)

getClassPrototype

public static Object getClassPrototype(JSFunctionObject thisObj)

setClassPrototype

public static void setClassPrototype(JSFunctionObject thisObj,
 Object value)

createBoundRootNode

public static com.oracle.truffle.api.nodes.RootNode createBoundRootNode(JSContext context,
 boolean construct,
 boolean newTarget)

createFunctionPrototype

public static JSFunctionObject createFunctionPrototype(JSRealm realm,
 JSDynamicObject objectPrototype)

addRestrictedFunctionProperties

public static void addRestrictedFunctionProperties(JSRealm realm,
 JSDynamicObject obj)

createNamedEmptyFunctionData

public static JSFunctionData createNamedEmptyFunctionData(JSContext context,
 com.oracle.truffle.api.strings.TruffleString name)

createEmptyFunctionData

public static JSFunctionData createEmptyFunctionData(JSContext context)

createNamedEmptyFunction

public static JSFunctionObject createNamedEmptyFunction(JSRealm realm,
 com.oracle.truffle.api.strings.TruffleString name)

createEmptyFunction

public static JSFunctionObject createEmptyFunction(JSRealm realm)

fillFunctionPrototype

public static void fillFunctionPrototype(JSRealm realm)

makeFunctionShape

public static com.oracle.truffle.api.object.Shape makeFunctionShape(JSContext context,
 JSDynamicObject prototype,
 boolean isGenerator,
 boolean isAsync)

createFunctionConstructor

public static JSFunctionObject createFunctionConstructor(JSRealm realm)

hasOnlyShapeProperties

public boolean hasOnlyShapeProperties(JSDynamicObject obj)

Description copied from class: JSClass

If true, JSClass.ownPropertyKeys(JSDynamicObject) and JSShape.getPropertyKeyList(Shape, boolean, boolean) enumerate the same keys.

Overrides:

hasOnlyShapeProperties in class JSNonProxy

getConstructTarget

public static com.oracle.truffle.api.CallTarget getConstructTarget(JSFunctionObject obj)

getConstructNewTarget

public static com.oracle.truffle.api.CallTarget getConstructNewTarget(JSFunctionObject obj)

isJSFunction

public static boolean isJSFunction(Object obj)

createGeneratorFunctionPrototype

public static JSObject createGeneratorFunctionPrototype(JSRealm realm,
 JSDynamicObject constructor)

createGeneratorFunctionConstructor

public static JSConstructor createGeneratorFunctionConstructor(JSRealm realm)

createAsyncFunctionPrototype

public static JSObject createAsyncFunctionPrototype(JSRealm realm,
 JSDynamicObject constructor)

createAsyncFunctionConstructor

public static JSConstructor createAsyncFunctionConstructor(JSRealm realm)

createAsyncIteratorPrototype

public static JSObject createAsyncIteratorPrototype(JSRealm realm)

Creates the %AsyncIteratorPrototype% object (ES2018 11.1.2).

createAsyncFromSyncIteratorPrototype

public static JSObject createAsyncFromSyncIteratorPrototype(JSRealm realm)

Creates the %AsyncFromSyncIteratorPrototype% object (ES2018 11.1.3.2).

createAsyncGeneratorFunctionPrototype

public static JSObject createAsyncGeneratorFunctionPrototype(JSRealm realm,
 JSDynamicObject constructor)

createAsyncGeneratorFunctionConstructor

public static JSConstructor createAsyncGeneratorFunctionConstructor(JSRealm realm)

createEnumerateIteratorPrototype

public static JSDynamicObject createEnumerateIteratorPrototype(JSRealm realm)

makeInitialEnumerateIteratorShape

public static com.oracle.truffle.api.object.Shape makeInitialEnumerateIteratorShape(JSContext context,
 JSDynamicObject enumerateIteratorPrototype)

createForInIteratorPrototype

public static JSDynamicObject createForInIteratorPrototype(JSRealm realm)

createOrdinaryHasInstanceFunction

public static JSDynamicObject createOrdinaryHasInstanceFunction(JSRealm realm)

getFrameRootNode

public static com.oracle.truffle.api.nodes.RootNode getFrameRootNode(com.oracle.truffle.api.frame.FrameInstance frameInstance)

createBuiltinSourceSection

public static com.oracle.truffle.api.source.SourceSection createBuiltinSourceSection(String name)

isBuiltinSourceSection

public static boolean isBuiltinSourceSection(com.oracle.truffle.api.source.SourceSection sourceSection)

isBuiltinThatShouldNotAppearInStackTrace

public static boolean isBuiltinThatShouldNotAppearInStackTrace(JSRealm realm,
 JSDynamicObject function)

isStrictBuiltin

public static boolean isStrictBuiltin(JSFunctionObject function,
 JSRealm realm)

getCallerSource

public static com.oracle.truffle.api.source.Source getCallerSource()