Squeak-dev March 2018

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Tektronix Smalltalk Document Archive | Allen Wirfs-Brock
by Ken Brown 05 Mar '18

05 Mar '18

Edgar J. De Cleene tweeted this link: http://www.wirfs-brock.com/allen/things/smalltalk-things/tektronix-smalltal… Ken G. Brown

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[ANN] Open Croquet for Squeak 6.x (experimental)
by Nikolay Suslov 04 Mar '18

04 Mar '18

Hello, Anticipating the new Squeak release! and in the spirit of the "Survey: what do you do with Squeak, what do you *want* to do?" want to share the work on restoring the original Open Croquet onto Squeak 6.x (experimental). For a long time, the community available Open Croquet images exist only in bootstrap images for Squeak 3.8 and for Squeak 4.2. Actually, there is no any open solution to use the latest Squeak VM and Smalltalk language with Open Croquet architecture. So, that starting from the original version to OpenQwaq, anyone could load it from scratch onto the new Squeak. Below you could find install instructions, links and first steps in achiving this. Demo-video: https://vimeo.com/257578323 Comparing to the original Open Croquet for Squeak 3.8/4.2: * No Embedded Morphic apps (bugs) * No Tweak (yet) * Original TContactPoint (find master on network) broadcaster/listener is replaced with WebSocket broadcaster/listener using WebClient (switching from UDP) * Island snapshot/serializing/restoring needs deep review ========================= Instructions and Links: Preloaded Squeak image: - Squeak VM and image with preloaded Croquet and content: https://www.krestianstvo.org/sdk/croquet/CroquetForSqueak6-App-MacWin-32bit… - Only Squeak image with preloaded Croquet and content: https://www.krestianstvo.org/sdk/croquet/CroquetForSqueak6-Image-resources.… - Only content (Textures, Models, etc.): https://www.krestianstvo.org/sdk/croquet/Content.zip How To install manually: 1. Get the latest Squeak VM with included B3DAcceleratorPlugin(!) The preloaded app uses VM cog.spur 32 bit for Mac/Windows: https://bintray.com/opensmalltalk/vm/download_file?file_path=squeak.cog.spu… https://bintray.com/opensmalltalk/vm/download_file?file_path=squeak.cog.spu… 2. Get the latest Squeak 6.x image from http://files.squeak.org/6.0alpha/ The preloaded app uses http://files.squeak.org/6.0alpha/Squeak6.0alpha-17606-32bit/ 3. Run Squeak. 4. In Workspace DoIt: (Installer fromUrl: ' http://sdk.krestianstvo.org/sdk/croquet/croquet-sn.2.mcm') install This will load FFI, OpenGL and Croquet packages from the project's repository "Open Croquet for Squeak 6.x". MCHttpRepository location: 'http://sdk.krestianstvo.org/sdk/croquet' user: '' password: '' Or you could manually load FFI at first: (Installer repository: 'http://source.squeak.org/FFI') install: 'FFI-Pools'; install: 'FFI-Kernel'; install: 'FFI-Tests'. and then only OpenGL and Croquet packages: (Installer fromUrl: ' http://sdk.krestianstvo.org/sdk/croquet/croquet-sn.1.mcm') install 5. Open 'Objects' in Squeak and choose 'Croquet' category. Drag Croquet(Master) or Demo(Master) onto the empty space. ========================= Best regards, Nikolai [image: Inline image 3]

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Updated instructions for trunk updating configurations
by Chris Cunningham 04 Mar '18

04 Mar '18

Based on feedback from last round of asking for feedback (and a few spelling fixes, too). I have removed discussion about the method movement, since it *should* just work; and I've put pointers in for new topic on renaming classes. Plus, we'll need to document what is happening in Congifurations and Monticello, maybe, to make it more reasonable to use these. ----- When and How to change the trunk update configuration: * First, only create a configuration when it is necessary. Extra configurations slow down the update process. BUT, missing a config that should be there BREAKS the update process. Ask when not sure * When you are adding a new package to trunk, update the configuration with the new package (just because a package is in the repository does not mean it is loaded) * When you are removing a package from trunk, update the configuration to remove the package (and follow instructions for removing the package) * When you need to ensure a preamble or postscript script is run for a package, include the version in a new configuration (otherwise it could be skipped - trunk only loads the latest version of a package if specific versions are not called out in the update configuration) * When you are renaming a class (follow the instructions for class renaming in trunk) * If you need to do very intricate, step by step surgery on the internals of Squeak itself, such as converting how contexts work, you should use a series of update configurations to ensure step by step applications of the packages so the trunk update is successful * When you are unsure - ask. If no response in a reasonable time (day(s), or sooner if it is to patch a broken trunk process, to wait for a response), then go ahead a build a config. To update the configuration: 1. Update from trunk to the latest 2. Open the trunk package 3. Select the 'update' package, find the last update commit, and "Browse" it (with the button) 4. In the MCConfigurationBrowser, press the "Update" button and choose "update all from image" 5. If you need to add a new package, press the "Add" button and chose the package to add (it needs to be in your image with the right version to add it) 6. If you need to remove a package, select the package and press "Remove" 7. If you packages are updating that have dependencies between each other (say, adding an abstract class to one package, and a subclass of that abstract class in another package), then you will need to make sure those packages are in the right order. In this case, find the package with the subclass, and make sure it is after the abstract classes package. Do this by selecting one package and pressing the "Up" and "Down" keys until the packages are in the right order 8. Finally, save the package back to Trunk, and test out the update stream to ensure it works. ----- Thanks, cbc

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The Trunk: Kernel-eem.1154.mcz
by commits＠source.squeak.org 03 Mar '18

03 Mar '18

Eliot Miranda uploaded a new version of Kernel to project The Trunk: http://source.squeak.org/trunk/Kernel-eem.1154.mcz ==================== Summary ==================== Name: Kernel-eem.1154 Author: eem Time: 27 February 2018, 10:50:39.300209 am UUID: f403de94-416e-4740-a83c-7b74e1d00810 Ancestors: Kernel-ul.1153 Fix CompiledCode>>allLiterals for the FullBlockClosure regime. Have CompiledBlock implement allSubLiterals for literals within a block and blocks nested within it. Have CompiledMethod>>hasLiteralSuchThat: recurse through compiled blocks to match its descent into arrays and method properties. Provide CompiledMethod>>scanForInstructionPattern: as a convenient wrapper for scanForInstructionSequence: =============== Diff against Kernel-ul.1153 =============== Item was added: + ----- Method: CompiledBlock>>allLiterals (in category 'literals') ----- + allLiterals + ^self homeMethod allLiterals! Item was added: + ----- Method: CompiledBlock>>allSubLiterals (in category 'literals') ----- + allSubLiterals + | literalsExceptOuter unfoldedSubLiterals | + literalsExceptOuter := self literals allButLast. + unfoldedSubLiterals := literalsExceptOuter + select: [:lit| lit isCompiledCode] + thenCollect: [:blockMethod| blockMethod allSubLiterals]. + unfoldedSubLiterals ifEmpty: + [^literalsExceptOuter]. + ^literalsExceptOuter, (unfoldedSubLiterals fold: [:a :b| a, b])! Item was added: + ----- Method: CompiledBlock>>hasLiteralSuchThat: (in category 'literals') ----- + hasLiteralSuchThat: litBlock + "Answer true if litBlock returns true for any literal in this method, even if embedded in array structure." + 2 to: self numLiterals do: + [:index | | lit | + lit := self objectAt: index. + ((litBlock value: lit) + or: [(lit isArray or: [lit isCompiledBlock]) and: [lit hasLiteralSuchThat: litBlock]]) ifTrue: + [^true]]. + ^false! Item was added: + ----- Method: CompiledCode>>allLiterals (in category 'literals') ----- + allLiterals + self subclassResponsibility! Item was added: + ----- Method: CompiledCode>>literals (in category 'literals') ----- + literals + "Answer an Array of the literals referenced by the receiver." + | literals numberLiterals | + literals := Array new: (numberLiterals := self numLiterals). + 1 to: numberLiterals do: + [:index | + literals at: index put: (self objectAt: index + 1)]. + ^literals! Item was changed: ----- Method: CompiledMethod>>allLiterals (in category 'literals') ----- allLiterals + | literals unfoldedSubLiterals | + literals := self literals. + unfoldedSubLiterals := literals + select: [:lit| lit isCompiledCode] + thenCollect: [:blockMethod| blockMethod allSubLiterals]. + unfoldedSubLiterals ifEmpty: + [^literals]. + ^literals, (unfoldedSubLiterals fold: [:a :b| a, b])! - ^self literals! Item was changed: ----- Method: CompiledMethod>>hasLiteralSuchThat: (in category 'literals') ----- hasLiteralSuchThat: litBlock "Answer true if litBlock returns true for any literal in this method, even if embedded in array structure." (self penultimateLiteral isMethodProperties and: [self penultimateLiteral hasLiteralSuchThat: litBlock]) ifTrue: [^true]. 2 to: self numLiterals + 1 do: [:index | | lit | lit := self objectAt: index. ((litBlock value: lit) + or: [(lit isArray or: [lit isCompiledBlock]) and: [lit hasLiteralSuchThat: litBlock]]) ifTrue: - or: [lit isArray and: [lit hasLiteralSuchThat: litBlock]]) ifTrue: [^true]]. ^false! Item was removed: - ----- Method: CompiledMethod>>literals (in category 'literals') ----- - literals - "Answer an Array of the literals referenced by the receiver." - | literals numberLiterals | - literals := Array new: (numberLiterals := self numLiterals). - 1 to: numberLiterals do: - [:index | - literals at: index put: (self objectAt: index + 1)]. - ^literals! Item was added: + ----- Method: CompiledMethod>>scanForInstructionPattern: (in category 'scanning') ----- + scanForInstructionPattern: tuple + "Convenient use of scanForInstructionSequence: + e.g. self systemNavigation browseAllSelect: [:m| m scanForInstructionPattern: #((pushConstant: true) (send:super:numArgs: spilled: false 1))] + self systemNavigation browseAllSelect: [:m| m scanForInstructionPattern: #((send:super:numArgs: arguments false 0) (send:super:numArgs: = false 1))]" + | first firstArgs second secondArgs third thirdArgs | + ^(InstructionStream on: self) scanForInstructionSequence: + (tuple size caseOf: { + [1] -> [first := tuple first. + firstArgs := first allButFirst. + first := first first. + [:a| + a selector == first and: [a arguments = firstArgs]]]. + [2] -> [first := tuple first. + firstArgs := first allButFirst. + second := tuple second. + secondArgs := second allButFirst. + first := first first. + second := second first. + [:a :b| + a selector == first and: [a arguments = firstArgs + and: [b selector == second and: [b arguments = secondArgs]]]]]. + [3] -> [first := tuple first. + firstArgs := first allButFirst. + second := tuple second. + secondArgs := second allButFirst. + third := tuple third. + thirdArgs := third allButFirst. + first := first first. + second := second first. + third := third first. + [:a :b :c| + a selector == first and: [a arguments = firstArgs + and: [b selector == second and: [b arguments = secondArgs + and: [c selector == third and: [c arguments = thirdArgs]]]]]]] })!

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Bugs.Squeak.org needs to be retired?!? (was [Mantis] Account registration)
by Ken Causey 02 Mar '18

02 Mar '18

With increasing frequency over the past several weeks I have been getting notices bugs.squeak.org account creations that don't really appear to be real users. Rarely is anything ever actually done with the accounts and in fact it appears that most of the time they are quickly removed presumably by the software/person creating them (or maybe someone else in the community is just getting there faster than me?) In any case, unless I'm mistaken the use of bugs.squeak.org to report and organize issues is now deprecated. Yes? No? If so then I really think that bugs.squeak.org should be closed. At least new account creation should be closed. The next step, if possible would be to disable all issue editing. I'm willing to look into this but I believe I would need shell level access to the host and probably to the the SQL server. Ken P.S. In the past the box-admins list (and others) was setup so that if the sender was subscribed to squeak-dev then the message would be accepted to the list. It appears that this feature did not make it to the new host. Not a big deal but I thought I would mention it. ---------- Forwarded message ---------- From: <box-admins(a)lists.squeakfoundation.org> Date: Fri, Mar 2, 2018 at 9:10 AM Subject: [Mantis] Account registration To: imparamantis(a)kencausey.com The following account has been created: Username: uzuzosopa E-mail: olujenuca(a)asas.domailnew.com Remote IP address: 10.176.200.8 http://bugs.squeak.org/ DO NOT REPLY TO THIS MESSAGE

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PG3ShoutParser(SHParserST80)>>scanIdentifier
by gettimothy 02 Mar '18

02 Mar '18

Good morning. Asking advice on approach to fixing this the right way. End result is at minimum a functioning class and a test to catch this stuff going forward. On Squeak 5.1 16551 First, to recreate the issue.. PG3SchemaMirror subclass: #MyDBSchemaMirror (and get it talking to the db via instructions here: http://forum.world.st/Status-of-PostgresV3-td4780110.html) Then, via those same instructions, get a Postgres Function downloaded to Squeak or attempt to enter one by hand. Second, the symptoms The SHParserST80) attempts to parse the code and a "Proceed for Truth" errors start popping up. Debugging it, the culprit is in PG3ShoutParser(SHParserST80)>>scanIdentifier (c := self nextChar) isAlphaNumeric or: [ allowUnderscoreSelectors and: [ c == $_ ] ] ] whileTrue. Where allowUnderscoreSelectors is undefined. As a quick fix attempt, changing to Scanner allowUnderscoreAsAssignment makes that error go away. However, new ones start popping up, so I decided to dig into things a bit more. Scanner is the wrong approach, because it and SHParserST80 are not related via inheritence (although they do share a common instance variable named "allowUnderscoreSelectors" I wondering if SHParserST80 is superceded by Scanner and if so, I am wondering the best way to approach this bug. Should I fix it within the SHParserST80 paradigm or is migration to Scanner in order? Thx for your time.

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