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New version of FFICHeaderExtractor v1.0.2 and OSubprocess v1.3.0
by StÃ©phane Ducasse Dec. 7, 2020

Dec. 7, 2020

Hi Some news since StandardFileStream got deprecated in Pharo 80, we removed it form Pharo 90. We updated - FFICHeaderExtractor now version v1.0.2 got migrated to Tonel and pharo-contributions + github actions https://github.com/pharo-contributions/OSSubprocess - OSSubprocess version v1.3.0 is out https://github.com/pharo-contributions/OSSubprocess Stef -------------------------------------------- StÃ©phane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Aurore Dalle FAX 03 59 57 78 50 TEL 03 59 35 86 16 S. Ducasse - Inria 40, avenue Halley, Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza Villeneuve d'Ascq 59650 France

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This week (49/2020) on the Issue Tracker
by Marcus Denker Dec. 7, 2020

Dec. 7, 2020

Spec v0.5 ========== New Inspector is now default in Pharo! - Inspector Introduces concept of "inspection concept" which allows to configure how the presentation will be show (and if it will be shown). For now it does not do much, but potential is huge. - Inspector uses SpMillerPaginatorPresenter. - Inspector uses popover to allow command expansion in the toolbar (otherwise is too big). - Inspector panes are closeable now. - Inspector, Playground now understand <meta+g> command - Playground pages now can "open in new page". - Activation in single click (which triggers column expansion) is now default for inspections (it was double click, but it felt weird). - Added several inspections (extensions to objects) to match what we had before. - Most commands now delegate its behavior to their contexts to allow better handling of them. - Introduce "icon providers" to handle how icons are provided in applications. - Refactor the way icons are used in StPharoApplication to allow switching of icon sets and the gradual transition from current naming to a better, semantic way of name icons. - Fixes #128 - Fixes pharo-project/pharo#7700 - Fixes #123 - Several bugfixes. Small Speed Improvements ======== Some tiny improvements, but the morph related code (like #hasDropShadow) is called in the main rendering loop. - optimize-hasDropShadow #7917 https://github.com/pharo-project/pharo/pull/7917 - Cleanup code for Morph properties #7903 https://github.com/pharo-project/pharo/pull/7903 - Do not allocate a block when executing #isInstalled #7936 https://github.com/pharo-project/pharo/pull/7936 Fixes ===== - Fix #7898 #7918 https://github.com/pharo-project/pharo/pull/7918 - Fix infinite recursion upon send of not-understood message to nil #7902 https://github.com/pharo-project/pharo/pull/7902 - [fix] fixes selector extraction when asking for it at the first charaâ¦ #7881 https://github.com/pharo-project/pharo/pull/7881 Improvements / New Features =========================== - Improve-isHaltNode #7919 It was detecting all sends to Halt, now it filters for selectors in the right category there. https://github.com/pharo-project/pharo/pull/7919 - Implementing hasProperty in Behavior and RPackage. #7875 https://github.com/pharo-project/pharo/pull/7875 - Add ExternalAddress class>>#allocate:bytesDuring: #7727 https://github.com/pharo-project/pharo/pull/7727 - No "inconsistent method classification" for methods in deprecated method category #7868 https://github.com/pharo-project/pharo/pull/7868 Cleaning unused Variables ========================= After all vars are cleaned, we will add a ReleaseTest so this can never happen again. - Remove unused ivars from HeuristicCompletion packages #7943 https://github.com/pharo-project/pharo/pull/7943 - Care on unreferenced variables in OpalCompiler packages #7944 https://github.com/pharo-project/pharo/pull/7944 - Remove unused environment ivar from BuilderManifestTest #7940 https://github.com/pharo-project/pharo/pull/7940 - Removed unused instance variable traitDefinition in CDTraitParserTest #7886 https://github.com/pharo-project/pharo/pull/7886 Halt Cleanups ============= There should be no #halt (and similar) sends in the code, Iif it is used for testing, this should be tagged. The goal then is to add a ReleaseTest to make sure the code stays clean. This makes the "Browse Breakpointsâ feature more usable, too - tag more tests with <haltOrBreakpointForTesting> #7926 https://github.com/pharo-project/pharo/pull/7926 - 7927-halt-left-in-OmBlockrefreshIfNeededStartingAtsince #7931 https://github.com/pharo-project/pharo/pull/7931 Cleanups: remove Code ====================== - 7830-DummyFindReplaceService-not-documented-not-used-Can-be-removed #7891 https://github.com/pharo-project/pharo/pull/7891 - Remove DeprecatedFileStream package #7885 https://github.com/pharo-project/pharo/pull/7885 - shouldDisplayOnTopContext-seems-to-be-not-needed #7873 https://github.com/pharo-project/pharo/pull/7873 Cleanups ======== And again lots of small cleanupsâ¦ think about them not as how important one of them is. This about what happens if you do 10.000 of those. - 7914-Fluid-builder-should-encapsulate-call-to-install-the-class #7921 https://github.com/pharo-project/pharo/pull/7921 - on local variable, we had #isUnused, while on Behavior is was #isUsed #7887 https://github.com/pharo-project/pharo/pull/7887 - RBPragmaNode-accessor-simpler #7950 https://github.com/pharo-project/pharo/pull/7950 - Cleanup tests and mock package of DrTest (Second attempt) #7933 https://github.com/pharo-project/pharo/pull/7933 - Tag classes in DrTests-CommentsToTests #7913 https://github.com/pharo-project/pharo/pull/7913 - Tag classes in DrTests-TestsRunner #7910 https://github.com/pharo-project/pharo/pull/7910 - Typo in DTStatusUpdate class comment #7911 https://github.com/pharo-project/pharo/pull/7911 - 7904-Improve-comment-of--methods #7905 https://github.com/pharo-project/pharo/pull/7905 - Fixed #7840. Deprecating hasPropertyNamed: #7880 https://github.com/pharo-project/pharo/pull/7880 - Cleanup CompiledMethodTest #7874 https://github.com/pharo-project/pharo/pull/7874 - Creating abstract method byteAt: in Integer #7883 https://github.com/pharo-project/pharo/pull/7883 - Deprecated Behavior methods should go to Deprecated Behavior methods â¦ #7866 https://github.com/pharo-project/pharo/pull/7866

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[ANN] New inspector as default in your Pharo9 image!
by Esteban Lorenzano Dec. 3, 2020

Dec. 3, 2020

Hi all, Today we are introducing our new inspector based on NewTools. This is part of our effort to replace all old tools (some based on Glamour, some based on Spec1 and some others in plain Morphic) to meet same design guidelines and prepare them for the future of the Pharo IDE. Next weeks we will integrate the new Spotter, which will be the end of the Glamour migration effort. Some work on migrating Iceberg and other Spec1 tools are on its way (and they will be merged as soon as work reach beta status) The most important changes for the new inspector are the inclusion of object-centric breakpoints, that apply only for the inspected object: - Right click on any instance variable in the raw view shows a menu to install a breakpoint on accesses to that variable: the execution will break whenever this variable is read, written or both (this is configurable) but only for the inspected object. - Right click on any method in the "Meta" view shows a menu to install a breakpoint on that method: the execution will break when that method is called but only for the inspected object. - The toolbar shows a button to configure a breakpoint on state access for the inspected object: the execution will break whenever any instance variable of the object is accessed (read, write or both and configurable) but only for the inspected object. - The breakpoint pane shows all breakpoints installed for the inspected object and for all other instances of the object's class. Use this pane to deactivate or to uninstall object-centric breakpoints. Cheers! Esteban ps: Yes, there will be bugs (maybe a lot) and missing inspector extensions. I'm counting on you to report (or/and helping implement it)

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[ANN] New UI renderer with Hi-DPI support (Beta testing)
by Ronie Salgado Nov. 30, 2020

Nov. 30, 2020

Hello, The last months I have been working in a new UI rendering framework for Pharo based on adding an intermediate scene graph with the purpose of improving rendering speed, and with the side effect of making the whole UI scalable and adding support for Hi-DPI rendering. We would appreciate that people could start testing this so that we can find bugs and stabilize it. For using this the latest Pharo 9 image and headless vm is required. Form Scene Graph repo, installation and settings repository: https://github.com/ronsaldo/form-scene-graph Known issues: - Iceberg is hanging on fetches and pushes only when using the Athens backend. No segmentation fault or debugger is being launched here so this is difficult to fix. When having to deal with this issue we recommend using the OSWindowGenericRenderer backend (SDL2). Best regards, Ronie

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[ANN] New Pharo VM released (v8.6.1)
by tesonep＠gmail.com Nov. 27, 2020

Nov. 27, 2020

Hi, this is an announcement of a new release of the Pharo VM. This new version is available to be downloaded through get-pharo scripts and through the Pharo Launcher. From the Pharo Launcher, remember to update the VM from the VM manager window. This version includes a series of improvements: - Unification of code base with the headless VM - Preparation for supporting HDPI displays. - Improvements in the speed of Threaded FFI (40x times faster in SameThread runner and 2x in Threaded worker). - Better handling of semaphores - Improvements in the loading of large images (better buffering) - Better support for headless execution on non-main thread Please let me know if you find any issues. Cheers, Pablo -- Pablo Tesone. tesonep(a)gmail.com

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This week (48/2020) on the Issue Tracker
by Marcus Denker Nov. 27, 2020

Nov. 27, 2020

That was a busy week.. we merged 50 Pull requests the last 7 days. And no, not only trivialities! Graphics ======== Add the missing implementation of OSSDL2GLRenderer >> #pixelExtent #7786 https://github.com/pharo-project/pharo/pull/7786 Clean the OSWindowGenericRenderer texture APIs for properly implementing a text renderer #7836 https://github.com/pharo-project/pharo/pull/7836 Fluid Class Definition ======================= Cleanupsâ¦ Fixes: #7816 this is what is breaking #7774 #7817 https://github.com/pharo-project/pharo/pull/7817 - 7820 class description contains dead code related to slots printing #7828 https://github.com/pharo-project/pharo/pull/7828 - Trait was missing the #named:package: instance creation method #7837 https://github.com/pharo-project/pharo/pull/7837 - Origin/7770 cleaning old definition printer #7845 https://github.com/pharo-project/pharo/pull/7845 FFI === - Cleanup UnifiedFFI packages #7793 https://github.com/pharo-project/pharo/pull/7793 - Extracting FFI backend #7834 https://github.com/pharo-project/pharo/pull/7834 Variables/Compiler ================== - MetaLinks-Cleanup-Variables2 #7742 Instead of names, use Variables! More to come. https://github.com/pharo-project/pharo/pull/7742 - SemanticAnalysis-Args-are-read #7844 Arguments are now correctly tagged as #read im semantic analysis https://github.com/pharo-project/pharo/pull/7844 - Compilerbased-meta-data-tagging #7779 We now tag methods with #halt calls during compilation instead of scanning bytecode slowly later. https://github.com/pharo-project/pharo/pull/7779 Speed Improvements =================== speedup #hasProperty: a little by using includesProperty: instead of #propertyAt:ifAbsent: - CompiledMethod-hasProperty-use-includesProperty #7854 https://github.com/pharo-project/pharo/pull/7854 This lead to a Proposal: Simplify How Pragmas are stored (feedback wanted!) - https://github.com/pharo-project/pharo/issues/7871 Bug Fixes ============ - Fix side-effect in MCOrganizationDefinition #7815 https://github.com/pharo-project/pharo/pull/7815 - #ensureCreateDirectory` Shouldn't Resolve #7833 https://github.com/pharo-project/pharo/pull/7833 - fixing-title-in-osx #7843 Blog post: https://thepharo.dev/2020/11/25/a-vm-bug-no-an-image-one/ https://github.com/pharo-project/pharo/pull/7843 - Fixing dependencies error. #7856 https://github.com/pharo-project/pharo/pull/7856 - 7862-Cleaning-finder-code-glicthes #7864 https://github.com/pharo-project/pharo/pull/7864 Small Improvements ================== - 7755 re excessive arguments rule should exclude ffi callouts #7757 https://github.com/pharo-project/pharo/pull/7757 - 7777-Could-we-have-isTestMethod-on-Symbol-too #7785 https://github.com/pharo-project/pharo/pull/7785 - 7347 improve exception description api #7661 https://github.com/pharo-project/pharo/pull/7661 - Accessor generator should create formatted version #7853 https://github.com/pharo-project/pharo/pull/7853 - Add additional linux platform checking #7803 https://github.com/pharo-project/pharo/pull/7803 Unused Varianbles Cleanup ========================= I wrote about this: https://blog.marcusdenker.de/finding-unused-variables-an-example-for-first-… The tests are for now on âself skipâ until we clean the unused vars. - Cleanup-Unused-Ivars #7780 https://github.com/pharo-project/pharo/pull/7780 - add testNoUnusedClassVariablesLeft (skipped for now) #7784 https://github.com/pharo-project/pharo/pull/7784 Lot of activity to clean it up: - Remove unused var in SycMethodNameEditorTest #7799 https://github.com/pharo-project/pharo/pull/7799 - Var cleanup in DependencyAnalyser #7791 https://github.com/pharo-project/pharo/pull/7791 - Care on unused ivars in Renraku #7811 https://github.com/pharo-project/pharo/pull/7811 - Unused ivar MorphicTabManagerAdapter #7809 https://github.com/pharo-project/pharo/pull/7809 - Care on unsued ivars in Calypso #7814 https://github.com/pharo-project/pharo/pull/7814 - Unused ivar in Reflectivity-Tools-Tests #7824 https://github.com/pharo-project/pharo/pull/7824 - Unused ivar in Clap #7822 https://github.com/pharo-project/pharo/pull/7822 - Remove unused trait users #7797 https://github.com/pharo-project/pharo/pull/7797 - Unused ivars in UDPSocketTest #7849 https://github.com/pharo-project/pharo/pull/7849 Cleanups ======== Cleanups are those changes that do not have any immediate impact for the users. But they prepare the future: they make code simpler, remove dead code, add documentation, fix typos... - Move ReAsClassRule to GeneralRules #7759 https://github.com/pharo-project/pharo/pull/7759 - Rule based cleanup for RBCompositeRefactoryChange #7776 https://github.com/pharo-project/pharo/pull/7776 - Simplify ReExcessiveArgumentsRule>>#basicCheck: #7789 https://github.com/pharo-project/pharo/pull/7789 - remove-halt-visitEnglobingErrorNode #7801 https://github.com/pharo-project/pharo/pull/7801 - Fulfil ClassTestCase>>#classToBeTested subclass reponsibility #7805 https://github.com/pharo-project/pharo/pull/7805 - Cleanup and extend Dr. Test #7807 https://github.com/pharo-project/pharo/pull/7807 - Cleanup DrTest - pass #2 #7819 https://github.com/pharo-project/pharo/pull/7819 - Remove FFITutorial #7795 https://github.com/pharo-project/pharo/pull/7795 - Merge-MethodNameEditor-RBMethodNameEditor #7775 https://github.com/pharo-project/pharo/pull/7775 - PharoDocComment : remove a direct reference to RBParser #7781 https://github.com/pharo-project/pharo/pull/7781 - PharoDoc-pass2 #7829 https://github.com/pharo-project/pharo/pull/7829 - [Code cleaning] Replaced 'Character tab asString' to 'String tab' #7835 https://github.com/pharo-project/pharo/pull/7835 - Clean up Base64MimeConverterTest #7851 https://github.com/pharo-project/pharo/pull/7851 - reduce-ASTCache-reset #7783 https://github.com/pharo-project/pharo/pull/7783 - 7857-Cleaning-ends-of-class-names-in-Calypso #7858 https://github.com/pharo-project/pharo/pull/7858 - 7859-CalypsoContextPartTwo #7861 https://github.com/pharo-project/pharo/pull/7861 - Small typo in ExtendedDatePrinter>>#printDate:format:on: #7870 https://github.com/pharo-project/pharo/pull/7870 - Ban rule "class not referenced" for WebBrowser subclasses #7847 https://github.com/pharo-project/pharo/pull/7847

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[ANN] Next Pharo Sprint: Nov 27
by Marcus Denker Nov. 23, 2020

Nov. 23, 2020

We will organize a Pharo sprint / Moose dojo Nov 27 (this Friday) Goals of this sprint: - Fix issues from tracker https://github.com/pharo-project/pharo/issues This is a Remote Sprint, it happens on Discord. http://pharo.org/contribute-events We have added a Board to coordinate the work: https://github.com/orgs/pharo-project/projects/9 A list of all Pharo Event of the year an be found here: https://association.pharo.org/events

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This week (47/2020) on the Issue Tracker
by Marcus Denker Nov. 23, 2020

Nov. 23, 2020

Pharo8 ====== HOT-FIX: Support GitHub Personal Access Tokens. This was already merged in Pharo9 before. - Merge Iceberg v1.6.10 in Pharo 8 #7732 https://github.com/pharo-project/pharo/pull/7732 First class Variables ================ Work continues: some small improvements (e.g. primitve error variables) and cleanups - MetaLinks-Cleanup-Variables2 #7742 https://github.com/pharo-project/pharo/pull/7742 - Variables defined with #primitive:error: are shown as undefined, fixes 7748 #7749 https://github.com/pharo-project/pharo/pull/7749 - Cleanup-SystemDictionary-varlookup #7746 https://github.com/pharo-project/pharo/pull/7746 - 7731-OCUndeclaredVariableWarning-isUninitialized-with-NonInteractiveUIManager #7745 https://github.com/pharo-project/pharo/pull/7745 - DoItVariable instead of ForeignVariable and tests #7710 https://github.com/pharo-project/pharo/pull/7710 ReadOnly Literals ============== Some cleanups... all literals added as literals are read only, no special code needed anymore. - Compiler-compile-all-Literals-readOnly #7631 https://github.com/pharo-project/pharo/pull/7631 - #isReadOnlyLiteral is not needed anymore #7767 https://github.com/pharo-project/pharo/pull/7767 - 7740-CI-32bit-testIsImmediateObject #7744 https://github.com/pharo-project/pharo/pull/7744 Graphics ======== - Add support for creating OpenGL ES contexts #7750 https://github.com/pharo-project/pharo/pull/7750 - Disable the dpi based computation screen scale factor computation in OS X #7747 https://github.com/pharo-project/pharo/pull/7747 Small Improvements ================== - 7755 re excessive arguments rule should exclude ffi callouts https://github.com/pharo-project/pharo/pull/7757 - ReLiteralArrayContainsCommaRule should ignore all UFFI selectors #7754 https://github.com/pharo-project/pharo/pull/7754 Fixes ===== - Allow catalog json to be served from GitHub and other #7738 https://github.com/pharo-project/pharo/pull/7738 - Duplicate API from Behavior to RGBehavior. #7743 https://github.com/pharo-project/pharo/pull/7743 Cleanups ========= And lots of small cleanups. As always, these are not important in itself as single items. But over time, taking them all together, they do matter. - Move ReAsClassRule to GeneralRules #7759 https://github.com/pharo-project/pharo/pull/7759 - 5457-environmentKeyNotFound-looks-deadcode #7773 https://github.com/pharo-project/pharo/pull/7773 - ObjectsAsMethodsTest-move-to-Kernel-Tests #7762 https://github.com/pharo-project/pharo/pull/7762 - Typo #7766 https://github.com/pharo-project/pharo/pull/7766 - DeadCode-Cleanup-Finder #7734 https://github.com/pharo-project/pharo/pull/7734 - FFICompilerPlugin-Simpler #7726 https://github.com/pharo-project/pharo/pull/7726 - Small cleanup on ReMissingSuperSendsRule #7761 https://github.com/pharo-project/pharo/pull/7761 - Typo in RGBehaviorDefinition>>#soleInstance #7752 https://github.com/pharo-project/pharo/pull/7752 - Another cleanup pass on DoubleLinkedList package #7736 https://github.com/pharo-project/pharo/pull/7736 - Cleanup System-Support-Tests #7729 https://github.com/pharo-project/pharo/pull/7729 - BaseStreamTest had just one subclass. Move the tests there and removeâ¦ #7739 https://github.com/pharo-project/pharo/pull/7739 - NautilusRefactoring-DeadcodeClean #7723 https://github.com/pharo-project/pharo/pull/7723 - Introduce package Collections-Sequenceable-Tests #7719 https://github.com/pharo-project/pharo/pull/7719 - Move-isHaltNode-to-AST #7765 https://github.com/pharo-project/pharo/pull/7765

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[Pharo 8.0] Build #1142: Merge Iceberg v1.6.10 in Pharo 8
by ci-pharo-ci-jenkins2＠inria.fr Nov. 19, 2020

Nov. 19, 2020

There is a new Pharo build available! The status of the build #1142 was: FAILURE. The Pull Request #7732 was integrated: "Merge Iceberg v1.6.10 in Pharo 8" Pull request url: https://github.com/pharo-project/pharo/pull/7732 Issue Url: https://github.com/pharo-project/pharo/issues/merge_iceberg_1_6_10 Build Url: https://ci.inria.fr/pharo-ci-jenkins2/job/Test%20pending%20pull%20request%2…

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AST Transformation Techniques
by sean＠clipperadams.com Nov. 18, 2020

Nov. 18, 2020

To generate code, I used to use templates like the following (contrived example): \`\`\`smalltalk `template := 'method1` ` ^ {returnValue}'.` `template format: { #returnValue -> 2 } asDictionary` \`\`\` This is \*okay\* for simple cases, but can get unwieldy, and doesn't benefit from e.g. (early) compiler warnings. It is also lacking when one wants to offer the behavior as a method and also as a script with no dependencies (maybe for CI). To overcome some of these limitations, I started saving the code template as an actual method and transforming the AST, e.g.: \`\`\`smalltalk `"Convert baseline##: method"` ` methodTree := (self methodNamed: selector) parseTree.` ` methodTree selector: #baseline:.` ` methodTree pragmas at: 1 put: (RBPragmaNode selector: #baseline arguments: #()).` ` commonBlockBody := methodTree statements first arguments last body.` ` commonBlockBody statements` ` detect: [ :e | e selector = #repository: ]` ` ifFound: [ :repoSetter | commonBlockBody removeNode: repoSetter ].` ` ` ` "Compile baseline method"` ` baseline compile: methodTree newSource classified: 'baseline'` \`\`\` When I started doing this, I noticed two things: 1\. There were idioms that were repeated over and over. 2\. It still isn't super easy to turn a method into a script with no dependencies (e.g. self sends) So, I did a spike to wrap a few common idioms for this use case. It works like this. Say you have a method like this: \`\`\` `SmallRemoteGitRepository>>#addRemote: urlString as: nameString` ` "Assumes repo is loaded"` ` ` ` | repo remote |` ` repo := IceRepository registry detect: [ :e | e name = self projectName ].` ` remote := IceGitRemote name: nameString url: urlString.` ` repo addRemote: remote.` ` remote fetch` \`\`\` And you want to also provide it as source code for a script with no dependencies. You can do: \`\`\` `SmallRemoteGitRepository >>#scriptToAddRemote: urlString as: nameString` ` | method transformer |` ` method := SmallRemoteGitRepository methodNamed: #addRemote:as:.` ` transformer := method peAST_Transformer` ` beScript;` ` addStatementFirst: #projectName , ' := ' , self projectName printString;` ` addStatementFirst: #nameString , ' := ' , nameString printString;` ` addStatementFirst: #urlString , ' := ' , urlString printString;` ` replaceNodeDetect: [ :e | e isMessage and: [ e selector = #projectName ] ]` ` withNode: (RBVariableNode named: #projectName).` ` ^ transformer newSource` \`\`\` which would generate (for example, for a particular instance): \`\`\` `| repo remote projectName |` `urlString := 'git@github.com:magritte-metamodel/magritte.git'.` `nameString := 'upstream'.` `projectName := 'Magritte'.` `repo := IceRepository registry detect: [ :e | e name = projectName ].` `remote := IceGitRemote name: nameString url: urlString.` `repo addRemote: remote.` `remote fetch` \`\`\` So my questions are: \- Does something like this already exist? \- Are there better ways to solve this problem? \- Does this solution look promising/generally-helpful?

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