July 2015 - Pharo-dev - lists.pharo.org

"missing" exports on the windows vm
by Nicolai Hess Sept. 14, 2015

Sept. 14, 2015

We have a failing test case for NB NBInterpreterProxyTest>>#testStackPointer it fails because NativeBoost loadSymbol: 'stackPointerAddress' fromModule: NativeBoost VMModule returns nil This works for the linux vm! There are other methods that can be loaded, for example: (NativeBoost loadSymbol: 'primitiveAllObjects' fromModule: NativeBoost VMModule) -> returns an address. This stopped working for the windows pharo vm around june 2014. The source that changed is cointerp.h, the prior version had EXPORT(...) declarations around all functions in cointerp.h, the current version not. Three questions: 1. Why does this still work on linux? Does it export all functions declared in a header? 2. why was it changed? (I could not found the change in the code generator, maybe we exported all functions with pragma #api and now only those with pragma #export ? 3. do we need this function to be exported? Apart from this testcases, this method is called the on image startup, but the nil return does not harm. It seems it is not part of the main vm api (like the interpreter proxy functions callable from external modules) and I didn't see code thet depend on this. There are similiar functions for which we load the function address on startup: cStackPointerAddress and cFramePointerAddress, this seems to work, but I don't know if the expected result is different. In NBInterpreterProxy>>#initialize, we try to load all fourmethods: stackPointerAddress/framePointerAddress -> nil cStackPointerAddress / cFramePointerAddress -> not nil nicolai

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Maintainer of FFI-Package
by Nicolai Hess Sept. 12, 2015

Sept. 12, 2015

Who is the maintainer of the FFI-Package for Squeak and/or Pharo ? I especially interested in the FFI-Unix examples and the state on working FFI on linux for current squeak release (AFAIK it does not work with "squeak all in one" 4.5) regards Nicolai

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[Reflectivity] Progress with Reifications
by Marcus Denker Sept. 11, 2015

Sept. 11, 2015

Hi, in Pharo5 #120 we have lots of progress with Reflectivity regarding to âreificated valuesâ. 1) more reificated value are working. #arguments - an array of the arguments of a message send or method #receiver - receiver of a message (or method executed) #context for Methods #sender for method and message This means we have now all the info needed to e.g. pass all date needed to do a message send on the meta level. (receiver, args, selector), or a variable store (#name, #newValue). 2) Reifications as arguments to conditions. When the block used as a condition has arguments, the name is matched to the possible reifications and if valid this value is passed as an argument. Very useful e.g. for object specific links: link := MetaLink new condition: [: object | object == <the object I am intersted in>]; metaObject: <someObject>; selector: <some selector> This link would only be active for this one object. 3) Reifications as meta object ------------- Every valid reified value can be the metaobject of the link. e.g. you can now define a link where the meta is the node where the Link is installed: link := MetaLink new metaObject: #node; selector: #tagHasBeenExecuted. Or the #receiver: link := MetaLink new metaObject: #receiver; selector: #perform:withArguments:; arguments: #(selector arguments). TODO -> #slot, #global. #variable reifications -> #after needs to wrap in ensure: -> primitives -> more tests -> optimize link preambles: when reifying both #arguments and #receiver, merge the preamble into one for performance.

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merging in a filetree repository
by Alexandre Bergel Sept. 9, 2015

Sept. 9, 2015

Hi! Do I still need to press the merge button in Monticello when I am working on a filtree git repository? I understand that no since the merging has to be done by Git, and not by monticello. I tried to not do the merge in monticello, but I get some conflicts when doing the git merge. For example: CONFLICT (content): Merge conflict in Hackathon.package/monticello.meta/version CONFLICT (content): Merge conflict in Hackathon.package/HProject.class/methodProperties.json CONFLICT (content): Merge conflict in Hackathon.package/HClass.class/methodProperties.json Why do we need this methodProperties.json and version files? Shouldnât git handle this? How should I merge these files? Any experience? Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

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ensure: and assignments RB Rule
by stepharo Sept. 8, 2015

Sept. 8, 2015

Hi guys I'm revisiting all the RB rule and I'm puzzled by this one. Checks assignment to a variable that is the first statement inside the value block that is also used in the unwind block. [| `@temps | `var := `@object. `@.statements] ensure: [`var `@messages: `@args] Does anybody have an idea? Stef

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Help regarding Scroll Pane usage
by Jigyasa Grover Aug. 12, 2015

Aug. 12, 2015

Hi I have built an accordion widget using *ExampleBuilderMorph* and *ExpanderMorph*. I would like to add the expanders to a scroll pane in the dialog. I tried using *#newScrollPaneFor:* but in vain. The corresponding code snippet is as: *builder := WidgetExamples exampleBuilder.* *dialog := (builder newPluggableDialogWindow: 'RESULTS').* *searchResultsAccordion := dialog contentMorph:* *(* * dialog newColumn:* * (* * SearchQuick myResult collect: [ :r |* * dialog newRow: {* * (* * (* * dialog newExpander: r title asString* * forAll: { * * (dialog newTextEditorFor: (ValueHolder new contents: r content asString )* * getText: #contents setText: #contents:)minHeight: 150.* * }* * )minWidth:750; minHeight: 10* * )* * cellInset: 0;* * borderStyle: (BorderStyle inset baseColor: dialog paneColor; width: 1)* * } * * ]* * )* * );* *model: nil.* *dialog newScrollPaneFor: searchResultsAccordion.* *builder openModal: dialog.* *dialog extent: 775(a)350.* *dialog position: 500(a)200.* I am able to design the accordion widget as desired, except the scroll pane. Help appreciated. Thanks JIGYASA

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[Issue tracker] *Please* look at your old reported issues!
by Marcus Denker Aug. 10, 2015

Aug. 10, 2015

Hi, We have 622 open issues. There are *a lot* of old issues that nobody will ever look at. Please check those that *you* submitted to see what the status is! If it is just âwould be niceâ, but not even on a level that you yourself are willing to even send a mail to the mailing list to get people interested in helping you to push the case forward, maybe you could think about closing the issue? Maybe someone asked a question? If you submit an issue and there is a question not answered for a month, we should close it: How important can it be? Why should *I* spend the time to fix this issue if *you* are not even willing to answer a question in a minute? It makes no sense to have lots and lots of issues that are not important even for the submitter. Another thing is that issues get fixed, subsystems replaced, code removedâ¦ and the amazing thing is that *never* the submitter of the original report closes it, even in these obvious cases. The issue tracker is not a one way street! Marcus

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Versionner Wipes per-package #repository: setting
by Sean P. DeNigris Aug. 9, 2015

Aug. 9, 2015

If you have a config with e.g.: spec package: 'MyPackage' with: [ spec repository: aString ]; And then save it with Versionner, it gets truncated to: spec package: 'MyPackage'; Should I file a bug? Ideally, Versionner would support Metacello's full API, but in the mean time, at least leaving unknown options alone would be a big improvement. As it stands now, once one has something like the above in a config, one can't use Versionner anymore. ----- Cheers, Sean -- View this message in context: http://forum.world.st/Versionner-Wipes-per-package-repository-setting-tp483… Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.

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Is Metacello in Pharo 5.0 up-to-date? and project locking
by Peter UhnÃ¡k Aug. 7, 2015

Aug. 7, 2015

Hi, I was playing around with metacello because I wanted to ignore warnings with locks... currently I am doing something like ~~~~~~~~ Metacello new baseline: 'ProjectAAA'; repository: 'gitfiletree:///path/to/projectAAA'; lock. Metacello new baseline: 'ProjectBBB'; repository: 'gitfiletree:///projectBBB'; onConflict: [ :ex | ex allow ]; load. ~~~~~~~~~ This will load both projects via gitfiletree, however it will also generate a lots of lock warnings which I have to manually confirm - this is bad for scripts. So the docs ( https://github.com/dalehenrich/metacello-work/blob/master/docs/LockCommandR… ) mention onLock: [ :ex | ex honor ], however in Pharo 5.0 there is no such method "honor". Is this bug? Should Metacello be updated on Pharo 5.0? Will this even solve my problems? (Honoring locks while not throwing warnings). Thanks, Peter

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Fwd: Freezing Bloc UI
by Peter UhnÃ¡k Aug. 5, 2015

Aug. 5, 2015

... I should really stop clicking <Reply> instead of <Reply to all>.... sorry for the double mails Nicolai. Platform - Debian Linux 64 bit (mix of stable/testing/experimental) Font - DejaVu Sans Regular 10 (I wanted to use Source Sans Pro, but my system is behaving weirdly about this font, so I used DejaVu, but in principle its same) libcairo2 1.14.2-2 Morphic is screen from Morphic world (with hinting on normal) Pango/Cairo generated with this script http://pastebin.com/Fx0r4XWJ (I found the code in this discussion http://ubuntuforums.org/archive/index.php/t-2120175.html ) Bloc is from Bloc world. Apart from antialiasing, in âthe Bloc one you can also see that kerning is wrong; noticeable for example in q-uic-k, br-o-wn, l-azy or Config-uration. Peter On Tue, Jul 28, 2015 at 11:36 PM, Nicolai Hess <nicolaihess(a)web.de> wrote: > > > 2015-07-28 20:51 GMT+02:00 Peter UhnÃ¡k <i.uhnak(a)gmail.com>: > >> So apparently Firefox uses Pango on top of Cairo to render fonts. Is that >> something we can apply? >> Because the results from pangocairo looks much better than what is >> currently in Bloc. >> > > Can you show an example. > with some info about: > what platform > cairo version > the font > > >> >> Or maybe I should be looking into Athens-based solution? >> What is Athens thens? I thought that it's vector canvas, but that's what >> cairo is. Is athens just Smalltalk binding? Where is the line? >> > > Yes, Athens is the API and cairo is the backend. All rendering happens > through cairo (and freetype). > > >> >> Thanks, >> Peter >> >> On Tue, Jul 28, 2015 at 8:47 PM, Peter UhnÃ¡k <i.uhnak(a)gmail.com> wrote: >> >>> but I don't know if we will do this ever or if it is possible at all. >>>>> >>>> >>> What do you mean not possible? That Bloc will have ugly jagged font >>> without kerning? >>> >>> I mean whole Firefox (Gecko) is rendered on Cairo, so surely the issue >>> can't be in Cairo. So maybe we just need to implement/wrap/bridge something >>> somewhere? >>> >>> So if I want usable fonts I will need to start studying athens/cairo >>> internals? >>> >>> Peter >>> >> >> >

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