August 2017 - Pharo-users - lists.pharo.org

Probably a bug in Garage SQLite
by Herby VojÄÃk Aug. 13, 2017

Aug. 13, 2017

Hello! This testing code: | databaseFile login accessor sqlString | databaseFile := Smalltalk imageDirectory asFileReference / 'play.sqlite'. login := Login new database: SQLite3Platform new; host: ''; port: ''; username: ''; password: ''; databaseName: databaseFile fullPath asZnUrl asString; yourself. accessor := DatabaseAccessor forLogin: login. accessor login. sqlString := 'SELECT * FROM AGENT'. (accessor basicExecuteSQLString: sqlString) contents inspect. fails (Pharo 6.1, GarageGlorp #stable loaded a week ago as a project dependency) with: Error: Unable to resolve external type: sqlite3 FFICallout(Object)>>error: FFICallout>>resolveType: FFICallout>>typeName:pointerArity: FFICallout>>argName:indirectIndex:type:ptrArity: FFIFunctionParser>>parseArgument FFIFunctionParser>>parseArguments FFIFunctionParser>>parseNamedFunction: FFICalloutMethodBuilder>>parseSignature: FFICalloutMethodBuilder>>generate FFICalloutMethodBuilder>>build: FFICalloutAPI>>function:module: GASqlite3FFI(Object)>>ffiCall:module: GASqlite3FFI>>apiErrorMessage: GASqlite3FFI>>signal:with:on: GASqlite3FFI>>checkForOk:on: GASqlite3FFI>>prepare:on:with: GASqlite3Statement>>prepare GASqlite3Driver>>prepare: GASqlite3ResultSet>>prepareStatement: GASqlite3ResultSet>>execute:withCollection: GASqlite3ResultSet>>execute:with:on: GASqlite3Driver>>execute:with: GASqlite3Driver>>execute: GAGlorpDriver>>basicExecuteSQLString: PharoDatabaseAccessor>>basicExecuteSQLString: UndefinedObject>>DoIt OpalCompiler>>evaluate [..snip..] Problem seems to be that in FFICallout >> resolveType:, the line binding := resolver ffiBindingOf: name asSymbol. actually produces nil, resolver being GASqlite3FFI class. If looking at the class side of GaSqlite3FFI, there is no ffiBindingOf: at all; there is nbBindingOf: aTypeName ^ TypeMap at: aTypeName ifAbsent: [ super nbBindingOf: aTypeName ] though. If I copy near-mindlessly and add: ffiBindingOf: aTypeName ^ TypeMap at: aTypeName ifAbsent: [ super ffiBindingOf: aTypeName ] then the code above fails correctly with: 'no such table: AGENT'. Am I missing some nb<->ffi bridge? Or is there a bug in Garage SQLite driver? Herby

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pharo config problem
by jb Aug. 13, 2017

Aug. 13, 2017

Hi, I have a problem with connection to a private smalltalkhub rep from the command line with pharo config. I think I set the --username and --password options correctly, but I always get: ZnHttpUnsuccessful: 403 Forbidded If I make the rep public then there is no access problem. Any hints what is going wrong? Johannes -- View this message in context: http://forum.world.st/pharo-config-problem-tp4960715.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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[ann] moldable editor - syntax highlighting ... with a twist
by Tudor Girba Aug. 12, 2017

Aug. 12, 2017

Hi, After another intense week, we are happy to announce that the Brick editor now supports some advanced syntax highlighting. To put it in perspective, let us take a look at one screenshot showing an inspector presentation containing a Brick editor opened on a Pillar file that includes some text, a code snippet and a reference to a picture: This shows both that we style the text based on the Pillar grammar, but also that we can style Smalltalk code (in fact, we have two nested stylers here). But, the more interesting thing is that below the picture reference, we get to see the actual picture (which happens to be another inspector screenshot). In fact, this picture is actually just another text attribute (we call it an adornment) that can be dynamically added to any text elements. This opens up a whole lot of expression power and it is all easily compose-able. This is another reason why we say that this editor is moldable and you should expect new applications making use of this moldability and combining it with the liveliness of Pharo. The latest Brick code is loadable through: Metacello new baseline: 'Brick'; repository: 'github://pharo-graphics/Brick/src'; load: #development. If you want to play with Pillar, load the following extra code and just inspect a Pillar file: Metacello new smalltalkhubUser: 'Pier' project: 'Pillar'; configuration: 'Pillar'; version: #development; load. ((IceRepository registry detect: [ :each | each name = 'Brick' ]) packageNamed: 'Brick-Editor-Pillar') loadLatest. One other thing to mention is performance. What Alex (Syrel) managed to do is quite remarkable. To see the impact in practice, try editing the largest method in Pharo (UnicodeDefinitions class >> #data) in both the built-in editor and in the Brick editor by inspecting: BrTextEditor onMethod: UnicodeDefinitions class >> #data There are still issues left to deal with and we will focus on them in the following weeks. But, we can safely say that the most important challenges are now behind us and that the design of the editor code is stable and robust. Please do let us know what you think. Cheers, The feenk team -- www.tudorgirba.com www.feenk.com "If you interrupt the barber while he is cutting your hair, you will end up with a messy haircut."

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PetitParser: Parse X as long as it's not Y
by Sean P. DeNigris Aug. 12, 2017

Aug. 12, 2017

How do I tell Petit Parser to parse a string of certain allowable characters as long as the final result isn't a particular string? E.g. consume an identifier as long as it's not 'Baz' or 'Bar' Thanks ----- Cheers, Sean -- View this message in context: http://forum.world.st/PetitParser-Parse-X-as-long-as-it-s-not-Y-tp4958895.h… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Checking in on source/dependency management
by sergio ruiz Aug. 12, 2017

Aug. 12, 2017

Hi, all.. I am just checking in on source and dependency management.Â I have been using Pharo 6 for a bit now, and i know that there has been a lot of talk about going to bit for source code management.Â I am wondering how far along that is, and if there is a package we can start using to work through that. I am also wondering if metacello is still the dependency management system of choice. I was using the GUI tool in for package management in pharo 5, but i was having issues with getting my project mangled. Is there a new current view on how all this should be done? Thanks! ---- peace, sergio photographer, journalist, visionary Public Key:Â http://bit.ly/29z9fG0 #BitMessageÂ BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV http://www.Village-Buzz.com http://www.ThoseOptimizeGuys.com http://www.coffee-black.com http://www.painlessfrugality.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

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FLSerializer in Pharo 6.1
by Johannes Brauer Aug. 11, 2017

Aug. 11, 2017

Hi everyone, the FLSerializer in Pharo 6.1 doesnât work. I tried the example from the class comment and I always get FileException: cannot open file: example.FL. Is that a known problem? Johannes

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Re: [Pharo-users] Threads safety in Pharo
by Ben Coman Aug. 11, 2017

Aug. 11, 2017

Not sure I'll have what you're looking for, but to start, do you mean Pharo's green threads or vm native threads? cheers -ben On Mon, Jul 31, 2017 at 7:38 AM, Alidra Abdelghani via Pharo-users < pharo-users(a)lists.pharo.org> wrote: > > > ---------- Forwarded message ---------- > From: Alidra Abdelghani <alidrandco(a)yahoo.fr> > To: pharo-users(a)lists.pharo.org > Cc: "StÃ©phane Ducasse" <stephane.ducasse(a)inria.fr>, farid arfi < > arfi_f(a)hotmail.com> > Bcc: > Date: Mon, 31 Jul 2017 01:38:58 +0200 > Subject: Threads safety in Pharo > Hi, > > Somebody once evoked the problem of threads safety in Pharo. With a friend > of mine who is expert in formal methods and process scheduling, we would > like to have a look on it. > Does anyone knows a good document describing the problem of Pharo with > threads safety or at least any document that we can start with? > > Thanks in advance, > Abdelghani > > > >

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VM dev and compilation
by Bruno Durin Aug. 11, 2017

Aug. 11, 2017

Hi, I have been tinkering with Pharo and Squeak for a few weeks and I am very enthusiastic with these great pieces of software! I would like to ask questions to check my understanding. I am refering from time to time to Squeak as it runs on the same VM as Pharo but my questions are focused on Pharo. As an exercice to learn, I am trying to compile Pharo VMs and get the VM simulator run in a Pharo image (first a 32-bit image+VM and later a 64-bit image+VM). I am doing this both under Ubuntu 14.04 LTS and Mac OS X 10.12.6. What I succeeded in doing: - compiling the squeak and pharo VM using the state of their respective git repo as of about 20 July 2017: on Mac both 32 and 64 bits, on Linux only 64 bits (mainly because I did not want to spend the time to fix the 32-bit libraries which do not coexist well with their 64-bit counterparts), - on Mac, generating the VM development image (SpurVMMaker) for Squeak on top a (32 bits) V5 image, launch it and run the VM simulator, - on Mac, generating the VM development image (generator.image) for Pharo on top of a (32 bits) V5 image, launch it and starting to run a CogVMSimulator (which currently fails, but I am debugging it and learning along the way.) So, my questions: 1) About the Pharo VM compilation (Below "the" Pharo VM means the official VMs that are published on the Pharo website but if VM developers use a different process between 2 releases I would be happy to know the differences.) a) is it correct that the Pharo VM is built using the github pharo-vm repository? b) in the pharo-vm tree, is it correct that "build" and "results" directories are remnant of the build process before Pharo reunited with Squeak on opensmalltalk vm and that the builder classes in the generator.image (PharoVMSpur32Builder and co) do not create the build.sh script in the "build" directory any more. c) is it correct that the Pharo VM is now built with the pharo.cog.spur (for example) make process in the various build sub-directories of the "opensmalltalk-vm" directory? 2) When running a Pharo VM compiled on Mac, the GUI was noticeably slower that the official VM downloaded from pharo.org. (I compared running the official image.) I did not see such slow down when compiling a Squeak VM. My educated guess is that it is related to libcairo and dependencies. Are there compiler optimisations that I should have manually added? Should I generate a XCode project with cmake and compile in XCode (I currently use ./mvm make script)? I have not had this problem under Linux. 3) On Mac, is the difference between having the plugins as Mach-O bundle in Squeak and as dylib libraries in Pharo only a packaging choice or does it have deeper implications? (Does it change for example the way FFI is done?) 4) Do I understand well that currently the simplest way to convert a 32-bit image to a 64-bit one is to use Spur32to64BitBootstrap class in a VM development image? (As far as I understand, the other way is to use SystemTracer.) A remark: when manually compiling a Pharo VM in the pharo-vm repo following Eliot's instructions, the updateSCCSVersions script does not work (because it is one level down with respect to the top of the git tree as compared to the opensmalltalk-vm repository). I eventually understood that the correct build procedure is in the travis scripts but as I do not know well the CI tools, it took a long time before I thought of looking into these scripts. If pharo-vm is used to build the Pharo VM (see question 1.a) I think it would be good to update the build process in README.md in pharo-vm tree (and I can do it). Thanks, Bruno

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UK Smalltalk User Group Meeting - Monday 21st August
by Giovanni Corriga Aug. 10, 2017

Aug. 10, 2017

The next meeting of the UK Smalltalk User Group Meeting will be on Monday, 21st August. We'll meet at a new venue The City Pride ( http://www. cityprideclerkenwell.co.uk/ ) at 7pm. If you'd like to join us, you can just show up at the pub. You can also sign up in advance at the meeting's Meetup page: *https://www.meetup.com/UKSTUG/events/242432390/ <https://www.meetup.com/UKSTUG/events/242432390/> *. See you there!

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about a pillar based output format for Epicea
by Stephane Ducasse Aug. 9, 2017

Aug. 9, 2017

Hi martin I would like to wlak over epicea objects and save the changed methods to be able to write booklets faster. What advices can you give me? Create a special visitor? Stef

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