org.htmlunit.corejs.javascript

Class AbstractEcmaObjectOperations

java.lang.Object

org.htmlunit.corejs.javascript.AbstractEcmaObjectOperations

public class AbstractEcmaObjectOperations
extends Object

Abstract Object Operations as defined by EcmaScript

See Also:

Abstract Operations - Operations on Objects

Notes

• all methods are to deviate from the method signature defined in the EcmaScript specification, by taking an additional 1st parameter of type Context: (downstream) methods may need the Context object to read flags and we want to avoid having to look up the current context (for performance reasons)
• all methods that implement an Abstract Operation as defined by EcmaScript are to be package-scopes methods, to prevent them from being used directly by 3rd party code, which would hamper evolving them over time to adept to newer EcmaScript specifications
• a link to the method specification of the specific (EcmaScript) version implemented will be put in the JavaDoc of each method that implements an Abstract Operations

Constructor Summary

Constructors

Constructor and Description
AbstractEcmaObjectOperations()

Method Summary

Modifier and Type	Method and Description
static boolean	isConstructor(Context cx, Object argument) IsConstructor ( argument ) 7.2.4 IsConstructor (argument)
static long	lengthOfArrayLike(Context cx, Scriptable o) LengthOfArrayLike ( obj ) 7.3.18 LengthOfArrayLike (obj)
static Constructable	speciesConstructor(Context cx, Scriptable s, Constructable defaultConstructor) Implement the ECMAScript abstract operation "SpeciesConstructor" defined in section 7.2.33 of ECMA262.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractEcmaObjectOperations

public AbstractEcmaObjectOperations()

Method Detail

speciesConstructor

public static Constructable speciesConstructor(Context cx,
                                               Scriptable s,
                                               Constructable defaultConstructor)

Implement the ECMAScript abstract operation "SpeciesConstructor" defined in section 7.2.33 of ECMA262.

Parameters:

cx - context

s - the object for which we will find the "species constructor" as per the spec

defaultConstructor - as per the spec, the value that will be returned if there is no constructor on "s" or if the "species" symbol is not set.

See Also:

lengthOfArrayLike

public static long lengthOfArrayLike(Context cx,
                                     Scriptable o)

LengthOfArrayLike ( obj )

7.3.18 LengthOfArrayLike (obj)

isConstructor

public static boolean isConstructor(Context cx,
                                    Object argument)

IsConstructor ( argument )

7.2.4 IsConstructor (argument)