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Re: [Pharo-users] [Vm-dev] [OT] Blog sequence "Journey through the VM"

by Mariano Martinez Peck

Thanks everybody for the nice welcome and words. The journey has already its departure: http://marianopeck.wordpress.com/2011/04/02/departure-vm-introduction/ I won't bother anymore in the mailing lists...so if you want to follow, check the website or use rss/mail notification. Cheers Mariano On Fri, Apr 1, 2011 at 1:31 AM, David T. Lewis <lewis(a)mail.msen.com> wrote: > > Great! Thanks for doing this and I'm looking forward to reading more > of your blog posts. > > Dave > > On Thu, Mar 31, 2011 at 10:28:40PM +0200, Mariano Martinez Peck wrote: > > > > Hi folks. I will start a sequence of VM related posts called ?Journey > > through the VM?, similar to what Igor did in Deep Smalltalk > > School< > http://www.inria.fr/centre-de-recherche-inria/lille-nord-europe/agenda/smal… > >. > > My main focus is that a regular Smalltalker, without any knowledge in VM > > stuff can understand the basis of it (ObjectMemory, Interpreter, etc). In > > addition, I expect the reader can download, change, compile, run, and > debug > > (and why not fixing?) the VM. > > > > Later on in the journey, I would also like to talk about what the > compiler > > does, what bytecodes are, how to read them, how they are mapped to the > VM, > > etc. I will also show some hooks or tricks that the VM provides and that > are > > not always known. Moreover, I will explain what a primitive is, how they > are > > executed by the VM, how you can write your own primitives, etc. FFI and > > writing your own plugin are also in my plans. > > > > It is important to notice that all these posts are thought for VM > newbies. I > > would appreciate if there can be some VM hackers paying attention that I > > don't say stupid things. > > > > http://marianopeck.wordpress.com/ > > > > Cheers > >

April 2, 2011

Re: [Pharo-users] More elegant way?

by Marcus Denker

On Apr 1, 2011, at 10:10 AM, Friedrich Dominicus wrote: > AxiNat <tibabenfortlapalanca(a)gmail.com> writes: > >> Hi Friederich, here's two simple optimizations: >> >> #(#nul #soh #stx #etx #eot #enq #ack #bel #bs #tab #lf) >> withIndexDo: [:each :index | >> self class compile: each asString , ' ^ asciiField at: ', index >> asString.]. >> >> Array withAll: #(1 2 3) is equivalent to #(1 2 3), and if you're not going to >> use the array again, you don't even need to assign it to a variable :) > Well I do not want the compile part with String So you could override #doesNotUnderstand: and there check if someone sends a message #etx (and the others) and then return the value. (you then want to store the value in a dictionary keyed by the the message name). doesNotUnderstand: aMessage | dict | dict := (#(nul soh stx etx eot enq ack bel bs tab lf) collectWithIndex: [:elem :index | elem -> index]) asDictionary. ^dict at: aMessage selector ifAbsent: [^super doesNotUnderstand: aMessage]. But of course doesNotUnderstand: is always a bit magic... and should be used with care. As for strings stiched together: yes, *horrible*. And we plan to move on to something better soon. In general, I like the idea to have a reflective model of the structure of methods... When talking about code, we should not use string... the Quasi-Quoting from Helvetia is far better than string manipulation: http://scg.unibe.ch/research/helvetia/examples#168249369 That combined with a good AST should make these things much easier. Marcus -- Marcus Denker -- http://www.marcusdenker.de INRIA Lille -- Nord Europe. Team RMoD.

April 1, 2011

Re: [Pharo-users] fileIn without initializing

by AxiNat

Hi Igor and list, Thanks, that would work if I were to do it manually, but I'd need to do that automatically for .st files provided by others, so I'm thinking of something of the sort: Subclass PositionableStream and override fileInAnnouncing:, so that it scans for chunks that contain exactly two words the second one of which is 'initialize'. I'm pretty positive this could work, but it sure is a terribly ugly hack... can you think of some alternative? Thanks! Bernat Romagosa.

April 1, 2011

Re: [Pharo-users] fileIn without initializing

by Igor Stasenko

On 1 April 2011 16:47, AxiNat <tibabenfortlapalanca(a)gmail.com> wrote: > Hi list, > Is there a way to fileIn a .st file without having the classes to be > automatically initialized? Yes. You can open the subject file using file browser tool, and instead of using 'install' or 'file in' command, press 'changes' button and select only stuff you wanna load. Another way is to load .st file into workspace and remove all class initializers, then save it and file in :) > Thanks! > Bernat Romagosa -- Best regards, Igor Stasenko AKA sig.

April 1, 2011

fileIn without initializing

by AxiNat

Hi list, Is there a way to fileIn a .st file without having the classes to be automatically initialized? Thanks! Bernat Romagosa

April 1, 2011

Re: [Pharo-users] More elegant way?

by Friedrich Dominicus

AxiNat <tibabenfortlapalanca(a)gmail.com> writes: > Hi Friederich, here's two simple optimizations: > > #(#nul #soh #stx #etx #eot #enq #ack #bel #bs #tab #lf) > Â Â withIndexDo: Â [:each :index | > Â Â Â self class compile: each asString , ' Â ^ asciiField at: ', index > asString.]. > > Array withAll: #(1 2 3) is equivalent toÂ #(1 2 3), and if you're not going to > use the array again, you don't even need to assign it to a variable :) Well I do not want the compile part with String > > Instead of manually using an index, it is more elegant to use > withIndexDo: Ok that is really nice to know Regards Friedrich -- Q-Software Solutions GmbH; Sitz: Bruchsal; Registergericht: Mannheim Registriernummer: HRB232138; Geschaeftsfuehrer: Friedrich Dominicus

April 1, 2011

Re: [Pharo-users] More elegant way?

by Norbert Hartl

Hi Friedrich, Am 31.03.2011 um 18:09 schrieb Friedrich Dominicus: > I've spend the better time of the afternoon with trying metaprogramming > with Smalltalk I finally have come up with: > > asciiNames := Array withAll: #(#nul #soh #stx #etx #eot #enq #ack #bel #bs #tab #lf). > i := 1. > asciiNames > do: [ :each | > self class compile: each asString , ' ^ asciiField at: ', i asString. > i := i + 1 ]. > > if you don't like string concatenation you may find this useful #(#nul #soh #stx #etx #eot #enq #ack #bel #bs #tab #lf) withIndexDo: [:each :index | self class compile: ('<1s><n><t>^ asciiField at: <2s>' expandMacrosWith: each with: index printString) classified: #(#accessing)] > which at least does what I want given names to ASCI Codes. Now > I have to admit I dislike this stuff with putting a string togehter and > run compile: on this string. > > I'm sure there is a more elegant way. Would you mind to lend me a hand? > > Yes and because I think I will need much more code generation in the > near future. Does you have nice Tutorial, Book whatever to do such kind > of jobs in Smalltalk I've quite a lot of books about Smalltalk but none > has this as theme... So it's really a bit hard to get into it.... Well, I think you have the perfect source for learning right in front of you. The code snippet above didn't come from my mind. I just remembered that if you are on a class you can open the menu, open 'Refactor Class' and select Accessors to have pharo generate getters and setters for you. So I wrote "Accessors" (with the double quotes) in the workspace selected it and did a string seach (shortcurt E). From the choice given 'ORCmdAccessorClassRefactoring' seemed to be the most feasible. Then I investigated the methods found some other reference and so on (I leave this as an exercise). Finally I found a snippet which I copied and altered for your needs. This way I learned something about OmniBrowser, Refactoring-Engine and that there is a method expandMacrosWith: :) I think this is the way to go. Often it is hard if you first have to think about a problem that you can solve. But you have a problem so with the very good searching capabilities of pharo you can find such things easily. Hope this helps, Norbert

April 1, 2011

Re: [Pharo-users] [OT] I've started blogging

by laurent laffont

On Thu, Mar 31, 2011 at 10:25 PM, Mariano Martinez Peck < marianopeck(a)gmail.com> wrote: > Hi guys. Just in case someone is interested, I've have started blogging: > "Sending messages through small talks" > > The blog is here: http://marianopeck.wordpress.com/ > > Any kind of feedback is more than welcome. > > I can't wait to learn !! Laurent. > Mariano >

April 1, 2011

Re: [Pharo-users] [Vm-dev] [OT] Blog sequence "Journey through the VM"

by David T. Lewis

Great! Thanks for doing this and I'm looking forward to reading more of your blog posts. Dave On Thu, Mar 31, 2011 at 10:28:40PM +0200, Mariano Martinez Peck wrote: > > Hi folks. I will start a sequence of VM related posts called ?Journey > through the VM?, similar to what Igor did in Deep Smalltalk > School<http://www.inria.fr/centre-de-recherche-inria/lille-nord-europe/agenda/smal…>. > My main focus is that a regular Smalltalker, without any knowledge in VM > stuff can understand the basis of it (ObjectMemory, Interpreter, etc). In > addition, I expect the reader can download, change, compile, run, and debug > (and why not fixing?) the VM. > > Later on in the journey, I would also like to talk about what the compiler > does, what bytecodes are, how to read them, how they are mapped to the VM, > etc. I will also show some hooks or tricks that the VM provides and that are > not always known. Moreover, I will explain what a primitive is, how they are > executed by the VM, how you can write your own primitives, etc. FFI and > writing your own plugin are also in my plans. > > It is important to notice that all these posts are thought for VM newbies. I > would appreciate if there can be some VM hackers paying attention that I > don't say stupid things. > > http://marianopeck.wordpress.com/ > > Cheers

March 31, 2011

Re: [Pharo-users] [OT] I've started blogging

by GermÃ¡n Arduino

2011/3/31 Mariano Martinez Peck <marianopeck(a)gmail.com>: > Hi guys. Just in case someone is interested, I've have started blogging: > "Sending messages through small talks" > > The blog is here: http://marianopeck.wordpress.com/ > > Any kind of feedback is more than welcome. > > Mariano > Congrats! -- ================================================= GermÃ¡n S. ArduinoÂ <gsa @ arsol.net>Â Â Twitter: garduino Arduino Software & Web HostingÂ Â http://www.arduinosoftware.com PasswordsProÂ http://www.passwordspro.com =================================================

March 31, 2011