Package org.mozilla.javascript

Class BoundFunction

java.lang.Object

org.mozilla.javascript.ScriptableObject

org.mozilla.javascript.IdScriptableObject

org.mozilla.javascript.BaseFunction

org.mozilla.javascript.BoundFunction

All Implemented Interfaces:

Serializable, Callable, ConstProperties, DebuggableObject, Function, IdFunctionCall, Scriptable

public class BoundFunction
extends BaseFunction

The class for results of the Function.bind operation EcmaScript 5 spec, 15.3.4.5

See Also:

• Serialized Form

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
BoundFunction(Context cx, Scriptable scope, Callable targetFunction, Scriptable boundThis, Object[] boundArgs)

Method Summary

Modifier and Type	Method	Description
Object	call(Context cx, Scriptable scope, Scriptable thisObj, Object[] extraArgs)	Should be overridden.
Scriptable	construct(Context cx, Scriptable scope, Object[] extraArgs)	Call the function as a constructor.
int	getLength()
boolean	hasInstance(Scriptable instance)	Implements the instanceof operator for JavaScript Function objects.

Methods inherited from class org.mozilla.javascript.BaseFunction

createObject, execIdCall, getArity, getClassName, getFunctionName, getTypeOf, setImmunePrototypeProperty

Methods inherited from class org.mozilla.javascript.IdScriptableObject

activatePrototypeMap, defineOwnProperty, delete, exportAsJSClass, get, getAttributes, has, hasPrototypeMap, initPrototypeConstructor, initPrototypeMethod, initPrototypeValue, 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, delete, deleteProperty, deleteProperty, get, get, getAllIds, getArrayPrototype, getAssociatedValue, getAttributes, getAttributes, getAttributes, getClassPrototype, getDefaultValue, getDefaultValue, getExternalArrayData, getExternalArrayLength, getFunctionPrototype, getGetterOrSetter, getIds, getObjectPrototype, getParentScope, getProperty, getProperty, getPropertyIds, getPrototype, getTopLevelScope, getTopScopeValue, getTypedProperty, getTypedProperty, has, hasProperty, hasProperty, isConst, isEmpty, isExtensible, isSealed, preventExtensions, put, putConst, putConstProperty, putProperty, putProperty, redefineProperty, sealObject, setAttributes, setAttributes, setAttributes, setExternalArrayData, setGetterOrSetter, setParentScope, setPrototype, size

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.mozilla.javascript.Scriptable

delete, delete, get, get, getDefaultValue, getIds, getParentScope, getPrototype, has, has, put, put, setParentScope, setPrototype

Constructor Details

BoundFunction

public BoundFunction(Context cx,
 Scriptable scope,
 Callable targetFunction,
 Scriptable boundThis,
 Object[] boundArgs)

Method Details

call

public Object call(Context cx,
 Scriptable scope,
 Scriptable thisObj,
 Object[] extraArgs)

Description copied from class: BaseFunction

Should be overridden.

Specified by:

call in interface Callable

Specified by:

call in interface Function

Overrides:

call in class BaseFunction

Parameters:

cx - the current Context for this thread

scope - the scope to execute the function relative to. This is set to the value returned by getParentScope() except when the function is called from a closure.

thisObj - the JavaScript this object

extraArgs - the array of arguments

Returns:

the result of the call

construct

public Scriptable construct(Context cx,
 Scriptable scope,
 Object[] extraArgs)

Description copied from interface: Function

Call the function as a constructor. This method is invoked by the runtime in order to satisfy a use of the JavaScript new operator. This method is expected to create a new object and return it.

Specified by:

construct in interface Function

Overrides:

construct in class BaseFunction

Parameters:

cx - the current Context for this thread

scope - an enclosing scope of the caller except when the function is called from a closure.

extraArgs - the array of arguments

Returns:

the allocated object

hasInstance

public boolean hasInstance(Scriptable instance)

Description copied from class: BaseFunction

Implements the instanceof operator for JavaScript Function objects.

foo = new Foo();
foo instanceof Foo; // true


Specified by:

hasInstance in interface Scriptable

Overrides:

hasInstance in class BaseFunction

Parameters:

instance - The value that appeared on the LHS of the instanceof operator

Returns:

true if the "prototype" property of "this" appears in value's prototype chain

getLength

public int getLength()

Overrides:

getLength in class BaseFunction