[Oberon] Message Objects in Oberon

[Chris Burrows]

> -----Original Message-----
> From: Oberon [mailto:oberon-bounces at lists.inf.ethz.ch] On Behalf Of
> Srinivas Nayak
> Sent: Monday, 28 March 2016 3:15 PM
> To: ETH Oberon and related systems
> Subject: [Oberon] Message Objects in Oberon
> 
> Oberon OS source code uses Handlers and Message objects extensively.
> We know, they are costly (run time type check), unhandled messages
> consume more time even (sequential check of if else ladder),
> compilers can't catch the errors made (inappropriate message sent to
> an object).
> Still how do we consciously decide to use message objects more in
> Oberon (which benefits outweigh all these)?
> 

Read the book titled "Object-Oriented Programming in Oberon-2" by Hanspeter
Mössenböck. You should find the answer to your question there. Chapter 6
"Dynamic Binding" is particularly relevant.

He is currently the Head of the Institut für Systemsoftware at Johannes
Kepler Universität. His book can be download from their website:

http://ssw.jku.at/Research/Books/


Regards,
Chris Burrows

CFB Software
http://www.astrobe.com