Hi 2013/1/29 Igor Stasenko <siguc...@gmail.com>
> On 28 January 2013 19:37, Stéphane Ducasse <stephane.duca...@inria.fr> > wrote: > > This was experimental. Do not lose your time with it. Now you know that > you should continue :) > > This was to prove that "kids" could define even texteditor with simple > rules. > > > that 'script' called DSL :) > > so, yes.. you can write text editor with 10 lines of DSL code.. > + 100+ lines of code for DSL parser > + numerous hours for developers to master your DSL before they can > understand/change the code :) > > I think you all agree that smalltalk is powerfull enough to be DSL for any domain/problem. No needs for special syntax > > Stef > > > > > >> Here is the paper: http://www.vpri.org/pdf/m2010002_lobjects.pdf > >> And you can download the image with the actual active essay from > http://tinlizzie.org/lesserphic2/Text%20Field%20for%20LObject.zip > >> > >> I read paper and play with image. And I have not good impression about > this work. > >> > >> First they present text with real objects for each letter. Each letter > is actually big object with x, y, predecessor, successor and other > attributes. How much memory such model required? > >> Do you think that presenting any letter with real object (not just > character) is sufficient for modern computers? I think not. Of course such > model significantly simplified all logic around text layout stuff. But I > think it is too expensive. > >> > >> Another thing which I always not agree is introduction scripting > languages inside smalltalk. In paper all layout logic (and editing too) > programmed by "system of rules" in special scripting language (very similar > to smalltalk). If you look deeply you will see that rules call other rules > with same way methods call other methods in basic smalltalk code. So I > don't see any value of rules idea expressed with special scripts. > >> In spite of my non positive opinion I like what they do inside rules. > It is really simple and understandable code. Maybe I will try reuse > something. > >> > >> Best regards, > >> Denis > > > > > > > > > > > > > > -- > Best regards, > Igor Stasenko. > >
