|
public ConstructLateBound ( ) : |
||
| return | ||
/// <summary>
/// Creates an object, using this function as the constructor.
/// </summary>
/// <param name="newTarget"> The value of 'new.target'. </param>
/// <param name="argumentValues"> An array of argument values. </param>
/// <returns> The object that was created. </returns>
public override ObjectInstance ConstructLateBound(FunctionInstance newTarget, params object[] argumentValues)
{
// Check for revocation.
if (target == null || handler == null)
{
throw new JavaScriptException(ErrorType.TypeError, "Cannot call 'construct' on a proxy that has been revoked.");
}
if (!this.target.IsConstructor)
{
throw new JavaScriptException(ErrorType.TypeError, "proxy is not a constructor.");
}
// Call the handler, if one exists.
var trap = handler.GetMethod("construct");
if (trap == null)
{
return(target.ConstructLateBound(newTarget, argumentValues));
}
var array = Engine.Array.New(argumentValues);
var result = trap.CallLateBound(handler, target, array, newTarget);
// Validate.
if (result is ObjectInstance objectInstance)
{
return(objectInstance);
}
throw new JavaScriptException(ErrorType.TypeError, $"'construct' on proxy: trap returned non-object ('{TypeConverter.ToString(result)}').");
}
public static object Construct(FunctionInstance target, ObjectInstance argumentsList, FunctionInstance newTarget = null)
{
if (newTarget == null)
{
newTarget = target;
}
return(target.ConstructLateBound(newTarget, TypeUtilities.CreateListFromArrayLike(argumentsList)));
}
