/// <summary>
/// Utility method to construct type error to indicate incompatible call
/// when converting script thisObj to a particular type is not possible.
/// </summary>
/// <remarks>
/// Utility method to construct type error to indicate incompatible call
/// when converting script thisObj to a particular type is not possible.
/// Possible usage would be to have a private function like realThis:
/// <pre>
/// private static NativeSomething realThis(Scriptable thisObj,
/// IdFunctionObject f)
/// {
/// if (!(thisObj instanceof NativeSomething))
/// throw incompatibleCallError(f);
/// return (NativeSomething)thisObj;
/// }
/// </pre>
/// Note that although such function can be implemented universally via
/// java.lang.Class.isInstance(), it would be much more slower.
/// </remarks>
/// <param name="f">
/// function that is attempting to convert 'this'
/// object.
/// </param>
/// <returns>
/// Scriptable object suitable for a check by the instanceof
/// operator.
/// </returns>
/// <exception cref="System.Exception">if no more instanceof target can be found</exception>
protected internal static EcmaError IncompatibleCallError(IdFunctionObject f)
{
throw ScriptRuntime.TypeError1("msg.incompat.call", f.GetFunctionName());
}
private Rhino.BaseFunction RealFunction(Scriptable thisObj, IdFunctionObject f)
{
object x = thisObj.GetDefaultValue(ScriptRuntime.FunctionClass);
if (x is Delegator)
{
x = ((Delegator)x).GetDelegee();
}
if (x is Rhino.BaseFunction)
{
return (Rhino.BaseFunction)x;
}
throw ScriptRuntime.TypeError1("msg.incompat.call", f.GetFunctionName());
}