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();
}
private DynamicMetaObject BindWorker(DynamicMetaObject /*!*/ context, DynamicMetaObject /*!*/ target, DynamicMetaObject /*!*/[] /*!*/ args)
{
// we don't have CodeContext if an IDO falls back to us when we ask them to produce the Call
IPythonInvokable icc = target as IPythonInvokable;
if (icc != null)
{
// call it and provide the context
return(icc.Invoke(
this,
context.Expression,
target,
args
));
}
else if (target.Value is IDynamicMetaObjectProvider)
{
return(InvokeForeignObject(target, args));
}
#if FEATURE_COM
else if (Microsoft.Scripting.ComInterop.ComBinder.CanComBind(target.Value))
{
return(InvokeForeignObject(target, args));
}
#endif
return(Fallback(context.Expression, target, args));
}