org.mozilla.javascript

Interface Function

public interface Function extends Scriptable, Callable

This is interface that all functions in JavaScript must implement. The interface provides for calling functions and constructors.

Author: Norris Boyd

See Also: Scriptable

Method Summary
Objectcall(Context cx, Scriptable scope, Scriptable thisObj, Object[] args)
Call the function.
Scriptableconstruct(Context cx, Scriptable scope, Object[] args)
Call the function as a constructor.

Method Detail

call

public Object call(Context cx, Scriptable scope, Scriptable thisObj, Object[] args)
Call the function. Note that the array of arguments is not guaranteed to have length greater than 0.

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 args the array of arguments

Returns: the result of the call

construct

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

Parameters: cx the current Context for this thread scope an enclosing scope of the caller except when the function is called from a closure. args the array of arguments

Returns: the allocated object