Squeak-dev December 2008

squeak-dev@lists.squeakfoundation.org

91 participants
114 discussions

Local variable does not shadow instance variable?
by Sophie (itsme213) 08 Dec '08

08 Dec '08

Why does "x" as a local variable not shadow an inst-var "x"? Object subclass: #Foo instanceVariableNames: 'x' <-- sometimes compile error here Foo>>m | x | <-- sometimes compile error here I tried to add an inst-var to one of my classes, and was forced to update local vars in some methods (or to use a different inst-var name). Thanks

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Re: [squeak-dev] External language support
by Stephan Eggermont 07 Dec '08

07 Dec '08

What about the work done with Panda3D at Disney? Cary Sandvig and Jesse Schell wrote a paper on what they did in 2000: http://www.cs.princeton.edu/courses/archive/fall02/cs526/papers/panda.pdf Current versions no longer support Smalltalk. Did they just use a c++ subset? Stephan

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[Ann] Monticello15 File support (alpha)
by Keith Hodges 07 Dec '08

07 Dec '08

Seasons Greetings Everyone, Monticello 1.5 "FINALLY" supports files. I have set LevelPlayingField to load this new version of MC1.5 If anyone has any problems with it do let me know asap. Keith ======== PackageInfo comment reads: External Files Support ================ The default implementation of the two methods below considers all files and directories (with their contents) matching the package name to be part of the package. #externalFiles #externalFilesMatches e.g. package name 'Release'. files matching would include: Release.text Release/Introduction.text Release/Tutorial/ch1.text External Files Support - Monticello ======================================== *Only file based repositories (i.e. .mcz files) are supported at present Since your external files will change far less than your code, it is recommended that you use a separate package to manage files in order to save space and time. Files are included in the .mcz (which is a standard zip archive) as files/* according to the pattern files/<uuid>/<path>/<to>/<file> *note: the uuid will change with every snapshot, it is unique to that file in that snapshot *note: in changes browsers the file is considered to be changed if the fileSize has changed. Snapshotting a package with files uses a temporary directory in package-cache/files The #flushCachedVersions menu item deletes this directory.

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[BUG]ZipArchive(Object)>>error:
by agrimes＠speakeasy.net 07 Dec '08

07 Dec '08

I just installed a virgin Squeak 3.10 and wanted to load the vmmaker, The User interface of the "universe" browser is a serious regression from earlier package browsers... But when I went to load the package it pulled in FFI as a dependancy and croaked as described below. 7 December 2008 12:11:03 pm VM: unix - a SmalltalkImage Image: Squeak3.10.2 [latest update: #7179] SecurityManager state: Restricted: false FileAccess: true SocketAccess: true Working Dir /home/atg Trusted Dir /home/atg/secure Untrusted Dir /home/atg/My Squeak ZipArchive(Object)>>error: Receiver: a ZipArchive Arguments and temporary variables: aString: 'can''t find EOCD position' Receiver's instance variables: members: an OrderedCollection() centralDirectorySize: nil centralDirectoryOffsetWRTStartingDiskNumber: nil zipFileComment: '' writeCentralDirectoryOffset: 0 writeEOCDOffset: 0 ZipArchive>>readFrom: Receiver: a ZipArchive Arguments and temporary variables: aStreamOrFileName: a RWBinaryOrTextStream a ByteArray(60 33 68 79 67 84 89 80 6...etc... stream: a RWBinaryOrTextStream a ByteArray(60 33 68 79 67 84 89 80 69 32 72 84 ...etc... name: 'a stream' eocdPosition: 0 Receiver's instance variables: members: an OrderedCollection() centralDirectorySize: nil centralDirectoryOffsetWRTStartingDiskNumber: nil zipFileComment: '' writeCentralDirectoryOffset: 0 writeEOCDOffset: 0 MCMczReader>>zip Receiver: a MCMczReader Arguments and temporary variables: Receiver's instance variables: stream: a RWBinaryOrTextStream a ByteArray(60 33 68 79 67 84 89 80 69 32 72 84 ...etc... package: nil info: nil definitions: nil dependencies: nil stepChildren: nil zip: a ZipArchive infoCache: nil MCMczReader>>parseMember: Receiver: a MCMczReader Arguments and temporary variables: fileName: 'package' tokens: nil Receiver's instance variables: stream: a RWBinaryOrTextStream a ByteArray(60 33 68 79 67 84 89 80 69 32 72 84 ...etc... package: nil info: nil definitions: nil dependencies: nil stepChildren: nil zip: a ZipArchive infoCache: nil --- The full stack --- ZipArchive(Object)>>error: ZipArchive>>readFrom: MCMczReader>>zip MCMczReader>>parseMember: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - MCMczReader>>loadPackage MCMczReader(MCVersionReader)>>package MCMczReader(MCVersionReader)>>basicVersion MCMczReader(MCVersionReader)>>version [] in UndefinedObject>>DoIt {[:t2 :t3 | t1 value: t2 * 2 - 1. reader := repo versionReaderForFileNamed:...]} Array(SequenceableCollection)>>keysAndValuesDo: [] in UndefinedObject>>DoIt {[:t1 | #('FFI-Kernel-ar.8.mcz' 'FFI-Tests-ar.2.mcz' 'FFI-Examples-ar.1.mcz' ...]} [] in ProgressInitiationException>>defaultMorphicAction {[result := workBlock value: progress]} BlockContext>>ensure: ProgressInitiationException>>defaultMorphicAction ProgressInitiationException>>defaultAction UndefinedObject>>handleSignal: MethodContext(ContextPart)>>handleSignal: MethodContext(ContextPart)>>handleSignal: ProgressInitiationException(Exception)>>signal ProgressInitiationException>>display:at:from:to:during: ProgressInitiationException class>>display:at:from:to:during: ByteString(String)>>displayProgressAt:from:to:during: UndefinedObject>>DoIt Compiler>>evaluate:in:to:notifying:ifFail:logged: Compiler class>>evaluate:for:notifying:logged: Compiler class>>evaluate:for:logged: Compiler class>>evaluate:logged: [] in MultiByteFileStream(PositionableStream)>>fileInAnnouncing: {[val := (self peekFor: $!) ifTrue: [(Compiler evaluate: self nextChunk l...]} BlockContext>>on:do: [] in MultiByteFileStream(PositionableStream)>>fileInAnnouncing: {[:bar | [self atEnd] whileFalse: [bar value: self position. self skipS...]} [] in ProgressInitiationException>>defaultMorphicAction {[result := workBlock value: progress]} BlockContext>>ensure: ProgressInitiationException>>defaultMorphicAction ProgressInitiationException>>defaultAction UndefinedObject>>handleSignal: MethodContext(ContextPart)>>handleSignal: ProgressInitiationException(Exception)>>signal ProgressInitiationException>>display:at:from:to:during: ProgressInitiationException class>>display:at:from:to:during: ByteString(String)>>displayProgressAt:from:to:during: MultiByteFileStream(PositionableStream)>>fileInAnnouncing: [] in ChangeSet class>>newChangesFromStream:named: {[newSet ifNotNil: [(aStream respondsTo: #converter:) ifTrue: [newStrea...]} BlockContext>>ensure: ChangeSet class>>newChangesFromStream:named: ...etc...

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Practical Squeak (was Re: What is Squeak (was Re: Re: package universes, sake/packages, (first time) user experiences, etc.))
by Rob Rothwell 07 Dec '08

07 Dec '08

Keith, While the politics of what you said was interesting in and of itself, I was most interested in the following small piece: I am fed up with you saying there is no progress. I do paid work in > squeak, and from that perspective there has been LOTS of progress. What kind of work (if you can say)? As a much-less-experienced "pragmatist," I always like to know "what's possible" so I can store that in the back of my mind and bring it out when I need to! Take care, and good luck with all the rest! Rob

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loading Telnet 301 into 3.10.2-7179-basic bombs reading SimpleTextMorph-fixed.bdf
by Greg A. Woods; Planix, Inc. 07 Dec '08

07 Dec '08

When loading Telnet 301 into 3.10.2-7179-basic a question box is opened asking if a more suitable font should be generated. Upon answering "Yes" I get the following error: UndefinedObject(Object)>>error: UndefinedObject(Object)>>errorNonIntegerIndex UndefinedObject(Object)>>at:put: BDFFontReader>>readAttributes BDFFontReader>>read StrikeFont>>readBDFFromFile:name: StrikeFont class>>newFromBDFFile:name: SimpleTextMorph class>>initializeFonts SimpleTextMorph class>>initialize UndefinedObject>>DoIt Compiler>>evaluate:in:to:notifying:ifFail:logged: Compiler class>>evaluate:for:notifying:logged: Compiler class>>evaluate:for:logged: Compiler class>>evaluate:logged: [] in MultiByteFileStream(PositionableStream)>>fileInAnnouncing: {[val := (self peekFor: $!) ifTrue: [(Compiler evaluate: self nextChunk l...]} BlockContext>>on:do: [] in MultiByteFileStream(PositionableStream)>>fileInAnnouncing: {[:bar | [self atEnd] whileFalse: [bar value: self position. self skipS...]} [] in ProgressInitiationException>>defaultMorphicAction {[result := workBlock value: progress]} BlockContext>>ensure: ProgressInitiationException>>defaultMorphicAction index: #STARTFONT value: #('2.1') "#STARTFONT" does not answer true to #isNumber thus the error is thrown. It looks like BDFFontReader>>readAttributes doesn't know how to read the "SimpleTextMorph-fixed.bdf" file that was actually downloaded to be used. Perhaps some format change occurred? -- Greg A. Woods; Planix, Inc. <woods(a)planix.ca>

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[Question] nil, true, false in array literals
by Igor Stasenko 07 Dec '08

07 Dec '08

in squeak, there is one assymetry in handling names, when used in array literals: #(true false nil foo) = (Array with: true with: false with: nil with: #foo) instead of: #(true false nil foo) = (Array with: #true with: #false with: #nil with: #foo) i wonder, is such parse rules standartized or belongs only to squeak? What is correct behavior, you think is? -- Best regards, Igor Stasenko AKA sig.

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[311] Ideas
by Keith Hodges 06 Dec '08

06 Dec '08

I thought I would throw out ideas for little things that people could contribute if they feel they have a spare "couple of hours". InstallerPharo One small thing that comes to mind is an extension to Installer that is able to load files from the pharo bug reporter website. If you know Installer you will know that Installer mantis bug: 1234 fix: 'someFile.st'. Will grab that file from that bug report on mantis. and Installer mantis ensureFix: 1234. will run the "fix begin" .... "fix end" script embedded in the last bug report user comment. best regards Keith p.s. see me on irc if you are interested

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Box-Admins Team Report for November, 2008
by Ken Causey 06 Dec '08

06 Dec '08

The box-admins team is reponsible for seeing that the community shared server is maintained and setting up any new features to be hosted on that server. For November, 2008: After the tumult of October, November was a breeze. The server has been up continuously now for 45 days without a hiccup. I think we need to plan for future prevention and handling of server outages but for the moment it seems we can breathe easily. I want to thank the community for the monetary support needed to fund the box and remind you that the bills continue to appear and that you can currently contribute to the hosting bills by going to http://www.squeak.org/Foundation/SupportSqueak/ and purchasing a Squeak badge. Note that a donation here may be used for other Squeak Foundation services including but not limited to development, development infrastructure, and promotion of Squeak. The services being hosted have continued to grow and include (but are not limited to): http://www.squeak.org/ SqueakMap - http://map.squeak.org/ http://ftp.squeak.org/ http://lists.squeakfoundation.org/ http://discuss.squeakfoundation.org/ http://source.squeakfoundation.org/ http://map.squeak.org/ https://svn.squeak.org/ http://update.squeakfoundation.org/ http://wiki.squeak.org/ http://bugs.squeak.org/ and DNS services for squeak.org and squeakfoundation.org domain names. Ken

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External language support
by jordi inglada 06 Dec '08

06 Dec '08

Hi all, I am new to Squeak and I would like to know if there is a way to use an external C++ API from it. I find the language and the environment very interesting and I would like to benefit from some legacy code. I have been searching on the net for an equivalent of SWIG < http://www.swig.org/> for Squeak without success. Thanks in advance for your help. Jordi. -- Jordi Inglada http://pixel-remote-sensing.blogspot.com/

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