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

[ann] pillar text editor
by Tudor Girba Nov. 15, 2017

Nov. 15, 2017

Hi, Pillar now ships with a text editor that also features a syntax highlighter. So, now, if you load the development version of Pillar: Gofer new smalltalkhubUser: 'Pier' project: 'Pillar'; configuration; loadDevelopment. You will have an extra presentation when inspecting a .pillar file: The new thing here is that the highlighter is based on the Pillar PetitParser, and it is extensible for highlighting more parts if needed. The highlighting also can support actions. For example, the picture above shows the file to the right after clicking on the reference. Please take a look and let me know what you think. Cheers, Doru -- www.tudorgirba.com www.feenk.com "Things happen when they happen, not when you talk about them happening."

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Copy bitmap to clipboard
by Hilaire Aug. 27, 2017

Aug. 27, 2017

Hi, A Dr. Geo user asked me about copying a DrGeo canvas view in the system clipboard, to past it in other tools as a text writer or any other editing tool. I looked in Pharo3 and Pharo6, I found text clipboard operation but it is not clear if there is support for other format? What about primAddClipboardData:data:dataFormat: I would like to copy and paste the DrGeo canvas as PNG content. -- Dr. Geo http://drgeo.eu

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YAML parser (2017)
by Peter Uhnak Aug. 24, 2017

Aug. 24, 2017

Hi, do we have a working parser for YAML? There's PPYAMLGrammar (in PetitParser), however it doesn't seem to work in Pharo 6 at all (not even tests pass). In Pharo 5 the tests are green, but using it on YAML content still fails... with small fix I managed it to "pass", however the output seems to be a very fine-grained AST decomposition and not the expected output (dictionaries/arrays). So do we have some else/working? YAML specs have BNF descriptions, so maybe SmaCC can generate it? (I don't know SmaCC, so maybe this is not how it works.) Thanks, Peter

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Pharo and QT
by Dimitris Chloupis Aug. 21, 2017

Aug. 21, 2017

Is there an interest for working with QT from Pharo ? I make no promises just something I was interested in trying.

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Re: [Pharo-users] PharoJS
by Craig Latta Aug. 20, 2017

Aug. 20, 2017

Hi-- Aik-Siong writes: > Craig Latta is doing something interesting[1] with SqueakJS which is > an optimized Smalltalk VM in JavaScript and HTML5. It is supposedly > able to run Smalltalk fast inside the browser and access the > JavaScript world freely. I think this route will benefit greatly from > WebAssembly. I'm also making it run Pharo. thanks, -C [1] https://caffeine.js.org -- Craig Latta Black Page Digital Amsterdam :: San Francisco craig(a)blackpagedigital.com +31 6 2757 7177 (SMS ok) + 1 415 287 3547 (no SMS)

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Re: [Pharo-users] PharoJS
by andrew glynn Aug. 17, 2017

Aug. 17, 2017

I was wondering: a) I'm assuming PharoJS would be much like Amber but inside the Pharo VM. b) How much of the Amber codebase could be re-used for it? I'm interested on the one hand, mainly due to the demand for Angular code in the browser (jQuery is great in Seaside, but many clients are looking for Angular recently), and my distaste for debugging JavaScript. Amber is ok but lacks the depth of tooling in Pharo, and isn't keeping up with the (constant) breaking changes in node and NPM. (Not that I blame the developers of Amber, it's a problem with the mindset of the developers in the JavaScript ecosystem - the way that Angular2 is almost completely different from Angular is an example of the lack of interest in the existing user base). The problem I see is that PharoJS would have the same issues. As a result it would not only be a fair amount of work to accomplish, it would be far more to maintain. The Pharo ecosystem is based on an entirely opposite mindset to the JS ecosystem - a few very good frameworks and a reasonable number of very good libraries, resulting in highly maintainable code even on projects with only one or two developers. On top of that it would have to deal with the issues with JS itself that make writing decent tools virtually impossible. Andrew Glynn -----Original Message----- From: Pharo-users [mailto:pharo-users-bounces@lists.pharo.org] On Behalf Of pharo-users-request(a)lists.pharo.org Sent: Thursday, June 22, 2017 8:41 AM To: pharo-users(a)lists.pharo.org Subject: Pharo-users Digest, Vol 50, Issue 108 Send Pharo-users mailing list submissions to pharo-users(a)lists.pharo.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.pharo.org/mailman/listinfo/pharo-users_lists.pharo.org or, via email, send a message with subject or body 'help' to pharo-users-request(a)lists.pharo.org You can reach the person managing the list at pharo-users-owner(a)lists.pharo.org When replying, please edit your Subject line so it is more specific than "Re: Contents of Pharo-users digest..."

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How do you develop for gemstone in open source tools (pharo)?
by Petr Fischer July 11, 2017

July 11, 2017

Hello, I'm curious how _comfortably_ develop software for Gemstone, which is the preferred/best way (and future)? 1) tODE - OK, a decent amount of work was inserted to it to make it work somehow. Decent tools with git support, a lot of windows (autolayouting required), very basic inspector, based on obsolete Pharo3, no autocomplete, weird auto code formating etc. :( Will the development continue (better inspectors, autocomplete, etc)? 2) gt4gemstone - new project based on GT tools, great playground/workspace/inspectors, running in latest Pharo, but again, just basic browser, no autocompletion, no syntax coloring (so far), but modern way What is the plan? Write proper class browser and code editor again from scratch? There is amazing new browser for Pharo, Calypso, which has remote browsing capabilities (but probably different remoting/proxy layer than gt tools) - is possible to utilize this project for remote Gemstone browsing in future? 3) develop in Pharo, then deploy to Gemstone With some compatibility layers, there is possibility to develop application/business logic in Pharo (with bare collections, dicts, containers etc.) and then deploy code to Gemstone and test. Nice scenario, latest modern dev tools (browsers, inspectors, versioning) from Pharo, but on the dev side in Pharo, no transaction logic (test transaction logic with junit impossible/not available etc.), also not compatible class library - so also with drawbacks with different Smalltalk implementation chaos :( I would very much like to get involved with Gemstone dev, but it scratches a bit now. Thanks! pf

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How to view hierarchy of multiple classes in a package?
by Tim Mackinnon July 8, 2017

July 8, 2017

Hi guys - I'm trying to get back into pharo, and check out the advances in v5. Anyway, if I look at a package in the system browser, it shows me classes in that package (i think my terminology is right here?). What confuses me, is his I can see the hire hybrid the classes in relation to each other? The hier button just shows the hierarchy of the selected class and not in relation to the others? I'm sure at some point pharo and squeak let you see the related hierarchies of all the classes in the package didn't it? This is really useful to help understand the relationship between classes and pure risky identify useful refactorings. I can't see how to do this in pharo anymore? Is this functionality that has been lost (which seems a shame)? Or am I missing another useful browsers? Tim Sent from my iPhone

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Are we able to run pharo images in a read only environment?
by Tim Mackinnon July 6, 2017

July 6, 2017

Hi - I am trying to run a pharo image in lambda (as an experiment) - however I get an error from Pharo about not being able to write to the changes file? As I am just evaluating some code - Iâm not really coding, so donât need a changes file - is there a command line option to not require it? Also, am I running pharo the most efficient way - Iâm using eval on the command line and referencing a class with a class method - but is this the best way? Thanks, Tim "errorMessage": "Command failed: ./pharo Pharo.image eval \"Lambda processJSON: '{\"key3\":\"value3\",\"key2\":\"value2\",\"key1\":\"value1\"}'\"\n'Pharo cannot write to the changes file named /var/task/Pharo.changes.\n\nPlease check that you have write permission for this file.\n\nYou won''t be able to save this image correctly until you fix this.'\n\u001b[31mError: Can't find the requested origin\n\u001b[0mUnixResolver(PlatformResolver)>>cantFindOriginError\n[ self cantFindOriginError ] in UnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed: in Block: [ self cantFindOriginError ]\nUnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed:or:\nUnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed:\nUnixResolver>>home\n[ self home / '.config' ] in UnixResolver>>preferences in Block: [ self home / '.config' ]\nUnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed:or:\nUnixResolver>>preferences\nUnixResolver(FileSystemResolver)>>resolve:\nSystemResolver(FileSystemResolver)>>unknownOrigin:\nSystemResolver(FileSystemResolver)>>resolve:\nInteractiveResolver>>unknownOrigin:\n[ self unknownOrigin: origin ] in InteractiveResolver>>resolve: in Block: [ self unknownOrigin: origin ]\nIdentityDictionary(Dictionary)>>at:ifAbsent:\nInteractiveResolver>>resolve:\nFileLocator>>resolve\nFileLocator(AbstractFileReference)>>exists\nGlobalIdentifierStonPersistence(GlobalIdentifierPersistence)>>shouldCallPreviousPersistence\nGlobalIdentifierStonPersistence(GlobalIdentifierPersistence)>>ensure:\nGlobalIdentifier>>ensure\nGlobalIdentifier class>>initializeUniqueInstance\nGlobalIdentifier class>>uniqueInstance\nSystemSettingsPersistence class>>resumeSystemSettings\n[ :persistence | persistence resumeSystemSettings ] in PharoCommandLineHandler>>runPreferences in Block: [ :persistence | persistence resumeSystemSettings ...etc...\nBlockClosure>>cull:\nSystemDictionary(Dictionary)>>at:ifPresent:\nSmalltalkImage>>at:ifPresent:\nPharoCommandLineHandler>>runPreferences\nPharoCommandLineHandler>>activate\nPharoCommandLineHandler class(CommandLineHandler class)>>activateWith:\n\u001b[0m", "errorType": "Error", "stackTrace": [ "'Pharo cannot write to the changes file named /var/task/Pharo.changes.", "", "Please check that you have write permission for this file.", "", "You won''t be able to save this image correctly until you fix this.'", "\u001b[31mError: Can't find the requested origin", "\u001b[0mUnixResolver(PlatformResolver)>>cantFindOriginError", "[ self cantFindOriginError ] in UnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed: in Block: [ self cantFindOriginError ]", "UnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed:or:", "UnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed:", "UnixResolver>>home", "[ self home / '.config' ] in UnixResolver>>preferences in Block: [ self home / '.config' ]", "UnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed:or:", "UnixResolver>>preferences", "UnixResolver(FileSystemResolver)>>resolve:", "SystemResolver(FileSystemResolver)>>unknownOrigin:", "SystemResolver(FileSystemResolver)>>resolve:", "InteractiveResolver>>unknownOrigin:", "[ self unknownOrigin: origin ] in InteractiveResolver>>resolve: in Block: [ self unknownOrigin: origin ]", "IdentityDictionary(Dictionary)>>at:ifAbsent:", "InteractiveResolver>>resolve:", "FileLocator>>resolve", "FileLocator(AbstractFileReference)>>exists", "GlobalIdentifierStonPersistence(GlobalIdentifierPersistence)>>shouldCallPreviousPersistence", "GlobalIdentifierStonPersistence(GlobalIdentifierPersistence)>>ensure:", "GlobalIdentifier>>ensure", "GlobalIdentifier class>>initializeUniqueInstance", "GlobalIdentifier class>>uniqueInstance", "SystemSettingsPersistence class>>resumeSystemSettings", "[ :persistence | persistence resumeSystemSettings ] in PharoCommandLineHandler>>runPreferences in Block: [ :persistence | persistence resumeSystemSettings ...etc...", "BlockClosure>>cull:", "SystemDictionary(Dictionary)>>at:ifPresent:", "SmalltalkImage>>at:ifPresent:", "PharoCommandLineHandler>>runPreferences", "PharoCommandLineHandler>>activate", "PharoCommandLineHandler class(CommandLineHandler class)>>activateWith:", "\u001b[0m", "ChildProcess.exithandler (child_process.js:204:12)", "emitTwo (events.js:106:13)", "ChildProcess.emit (events.js:191:7)", "maybeClose (internal/child_process.js:886:16)", "Process.ChildProcess._handle.onexit (internal/child_process.js:226:5)" ] }

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Pharo command line, stdout and integrating with other tools?
by Tim Mackinnon July 4, 2017

July 4, 2017

Hi - I've been playing with using Pharo with Aws lambda and have got an image to launch in that environment. However now I need to better integrate Pharo with its calling environment - and I know there was a concerted effort to make Pharo play better which I should be able to leverage. So I am calling Pharo from a NodeJS wrapper (the suggested aws method for integrating alternative languages like Ruby, Go etc). I got this to work - however as an observation, it is rather awkward passing parameters to Pharo using the "eval" mechanism as other languages and environments frequently use the " character (particularly with Json) and this causes Pharo to fail if you don't \" this. I'm wondering if others have noted this and whether we can do this better somehow? For now a little nodeJS regex fu gets me past it. However my next question is about passing information back to the calling application. I can see that there is a stdout method on Fikestream that I can write to (great), however in my ./pharo eval call, which sends to a class method doing this - it also returns the result of that method or yourself? I guess this convention is great for the "eval 42 factorial" example but not so great of you just want to return some Json via stdout in a format of the calling environment? Is there something simple trick I can do to stop this extra result and just let me use stdout myself? Or do I have to return a Smalltalk string and then regex convert it to a new format in my calling language? I'm wondering if others have done this, or if anyone has some advice? It feels like a usecase that we might be able to do better somehow? Tim Sent from my iPhone

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