private DynamicMetaObject InvokeFallback(DynamicMetaObjectBinder action, Expression codeContext, DynamicMetaObject /*!*/[] args)
{
InvokeBinder ib = action as InvokeBinder;
if (ib != null)
{
if (_baseMetaObject != null)
{
return(_baseMetaObject.BindInvoke(ib, args));
}
return(ib.FallbackInvoke(this.Restrict(this.GetLimitType()), args));
}
PythonInvokeBinder pib = action as PythonInvokeBinder;
if (pib != null)
{
IPythonInvokable ipi = _baseMetaObject as IPythonInvokable;
if (ipi != null)
{
return(ipi.Invoke(pib, codeContext, this, args));
}
if (_baseMetaObject != null)
{
return(pib.InvokeForeignObject(this, args));
}
return(pib.Fallback(codeContext, this, args));
}
// unreachable, we always have one of these binders
throw new InvalidOperationException();
}
/// <summary>
/// Helper to do fallback for Invoke's so we can handle both StandardAction and Python's
/// InvokeBinder.
/// </summary>
internal static DynamicMetaObject /*!*/ InvokeFallback(DynamicMetaObjectBinder /*!*/ action, Expression codeContext, DynamicMetaObject target, DynamicMetaObject /*!*/[] /*!*/ args)
{
InvokeBinder act = action as InvokeBinder;
if (act != null)
{
return(act.FallbackInvoke(target, args));
}
PythonInvokeBinder invoke = action as PythonInvokeBinder;
if (invoke != null)
{
return(invoke.Fallback(codeContext, target, args));
}
// unreachable, we always have one of these binders
throw new InvalidOperationException();
}
