Squeak-dev May 2018

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<Programming> 2019: Call for Papers & Call for Workshop Proposals
by Fabio Niephaus 04 May '18

04 May '18

<Programming> 2019 : The Art, Science, and Engineering of Programming April 1-4, 2019, Genova, Italy http://2019.programming-conference.org The International Conference on the Art, Science, and Engineering of Programming is a new conference focused on programming topics including the experience of programming. We have named it <Programming> for short. <Programming> seeks for papers that advance knowledge of programming on any relevant topic, including programming practice and experience. Paper submissions and publications are handled by the the Art, Science, and Engineering of Programming journal (http://programming-journal.org). Accepted papers must be presented at the conference. ******************************************************** CALL FOR PAPERS ******************************************************** <Programming> 2019 accepts scholarly papers that advance knowledge of programming. Almost anything about programming is in scope, but in each case there should be a clear relevance to the act and experience of programming. PAPER SUBMISSIONS: June 1, 2018 URL FOR SUBMISSIONS: http://programming-journal.org/submission/ Submissions covering several areas of expertise are accepted, including but not limited to: • General-purpose programming • Distributed systems programming • Parallel and multi-core programming • Graphics and GPU programming • Security programming • User interface programming • Database programming • Visual and live programming • Data mining and machine learning programming • Interpreters, virtual machines and compilers • Modularity and separation of concerns • Model-based development • Metaprogramming and reflection • Testing and debugging • Program verification • Programming education • Programming environments • Social coding ******************************************************** CALL FOR WORKSHOP PROPOSALS ******************************************************** To build a community and to foster an environment where participants can exchange ideas and experiences related to practical software development, <Programming> will host a number of workshops, during the days before the main conference. The workshops will provide a collaborative forum to exchange recent and/or preliminary results, to conduct intensive discussions on a particular topic, or to coordinate efforts between representatives of a technical community. They are intended as a forum for lively discussion of innovative ideas, recent progress, or practical experience on programming and applied software development in general for specific aspects, specific problems, or domain-specific needs. We also encourage practical, hands-on workshops in which participants actually experience one or several aspects of practical software development. WORKSHOP PROPOSAL SUBMISSIONS: First Deadline: July 1st, 2018 Second Deadline: September 1st, 2018 The duration of workshops is in general one day, but we encourage the submission of half-day workshop proposals on focused topics as well. In exceptional situations, e.g., for workshops that involve actual practice of programming-related activities, workshop organizers can request a 2 day workshop slot. If desired, the workshop proceedings can be published in the ACM Digital Library. ******************************************************** IMPORTANT DATES ******************************************************** Research paper submissions: June 1, 2019 Research paper first notifications: August 1, 2018 Research paper final notifications: September 7, 2018 Workshop proposals: July 1st, 2018 (first deadline) Workshop proposals: September 1st, 2018 (second deadline) ******************************************************** ORGANIZATION ******************************************************** General Chair: Davide Ancona, University of Genova Local Organizing Chair: Elena Zucca, University of Genova Program Chair: Matthew Flatt, University of Utah Organizing Committee: Walter Cazzola (Workshops Co-Chair), Università degli Studi di Milano Stefan Marr (Workshops Co-Chair), University of Kent Fabio Niephaus (Publicity Co-Chair), Hasso Plattner Institute, University of Potsdam Tobias Pape (Web Technology Chair), Hasso Plattner Institute, University of Potsdam Program Committee: Mehdi Bagherzadeh, Oakland University Walter Cazzola, Università degli Studi di Milano Ravi Chugh, University of Chicago Joeri De Koster, Vrije Universiteit Brussel Christos Dimoulas, Northwestern University Susan Eisenbach, Imperial College London Richard P. Gabriel, Dream Songs, Inc. & HPI Jeremy Gibbons, University of Oxford Michael Greenberg, Pomona College Philipp Haller, KTH Royal Institute of Technology Robert Hirschfeld, HPI, University of Potsdam Eunsuk Kang, Carnegie Mellon University Stephen Kell, University of Cambridge Stefan Marr, University of Kent Tamara Rezk, Inria Joshua Sunshine, Carnegie Mellon University Steffen Zschaler, King's College London ******************************************************** <Programming> 2019 is kindly supported by AOSA ******************************************************** For more information, visit http://2019.programming-conference.org

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The Trunk: Morphic-mt.1426.mcz
by commits＠source.squeak.org 04 May '18

04 May '18

Marcel Taeumel uploaded a new version of Morphic to project The Trunk: http://source.squeak.org/trunk/Morphic-mt.1426.mcz ==================== Summary ==================== Name: Morphic-mt.1426 Author: mt Time: 4 May 2018, 8:49:10.20407 am UUID: 1f2d43f7-f891-4a45-a18c-306ae6fa4094 Ancestors: Morphic-mt.1425 Minor fix to reset mouse cursor for drag-drop operations. Got annoying because of the text cursor in workspaces. Try: "Morph new openInHand". Needs further clean-up because #attachMorph:, #grabMorph:, and #grabMorph:from: exhibit much code duplication. =============== Diff against Morphic-mt.1425 =============== Item was changed: ----- Method: HandMorph>>attachMorph: (in category 'grabbing/dropping') ----- attachMorph: m "Position the center of the given morph under this hand, then grab it. This method is used to grab far away or newly created morphs." | delta | self releaseMouseFocus. "Break focus" + self showTemporaryCursor: nil. delta := m bounds extent // 2. m position: (self position - delta). m formerPosition: m position. targetOffset := m position - self position. self addMorphBack: m.! Item was changed: ----- Method: HandMorph>>grabMorph: (in category 'meta-actions') ----- grabMorph: aMorph "Grab the given morph (i.e., add it to this hand and remove it from its current owner) without changing its position. This is used to pick up a morph under the hand's current position, versus attachMorph: which is used to pick up a morph that may not be near this hand." | grabbed | self releaseMouseFocus. "Break focus" + self showTemporaryCursor: nil. grabbed := aMorph aboutToBeGrabbedBy: self. grabbed ifNil:[^self]. grabbed := grabbed topRendererOrSelf. ^self grabMorph: grabbed from: grabbed owner! Item was changed: ----- Method: HandMorph>>grabMorph:from: (in category 'grabbing/dropping') ----- grabMorph: aMorph from: formerOwner "Grab the given morph (i.e., add it to this hand and remove it from its current owner) without changing its position. This is used to pick up a morph under the hand's current position, versus attachMorph: which is used to pick up a morph that may not be near this hand." | grabbed offset targetPoint grabTransform fullTransform | self releaseMouseFocus. "Break focus" + self showTemporaryCursor: nil. grabbed := aMorph. aMorph keepsTransform ifTrue:[ grabTransform := fullTransform := IdentityTransform new. ] ifFalse:[ "Compute the transform to apply to the grabbed morph" grabTransform := formerOwner ifNil: [IdentityTransform new] ifNotNil: [formerOwner grabTransform]. "Compute the full transform for the grabbed morph" fullTransform := formerOwner ifNil: [IdentityTransform new] ifNotNil: [formerOwner transformFrom: owner]. ]. "targetPoint is point in aMorphs reference frame" targetPoint := fullTransform globalPointToLocal: self position. "but current position will be determined by grabTransform, so compute offset" offset := targetPoint - (grabTransform globalPointToLocal: self position). "apply the transform that should be used after grabbing" grabbed := grabbed transformedBy: grabTransform. grabbed == aMorph ifFalse: [grabbed setProperty: #addedFlexAtGrab toValue: true]. "offset target to compensate for differences in transforms" grabbed position: grabbed position - offset asIntegerPoint. "And compute distance from hand's position" targetOffset := grabbed position - self position. self addMorphBack: grabbed. grabbed justGrabbedFrom: formerOwner.!

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The Trunk: Morphic-mt.1425.mcz
by commits＠source.squeak.org 04 May '18

04 May '18

Marcel Taeumel uploaded a new version of Morphic to project The Trunk: http://source.squeak.org/trunk/Morphic-mt.1425.mcz ==================== Summary ==================== Name: Morphic-mt.1425 Author: mt Time: 4 May 2018, 8:03:48.28207 am UUID: fec34f3d-5815-0d4c-b3d7-e205cfe2ef7a Ancestors: Morphic-kfr.1424 In Morphic's dialog for true/false choices, support cancellation as a third option. Yes, this might break some old code, yet, I am not aware of a frequent use case here. We should be fine. We need this little change for the ListChooser. See ToolBuilder-Morphic-mt.217. =============== Diff against Morphic-kfr.1424 =============== Item was changed: ----- Method: UserDialogBoxMorph class>>confirm:title:trueChoice:falseChoice:at: (in category 'utilities') ----- confirm: aString title: titleString trueChoice: trueChoice falseChoice: falseChoice at: aPointOrNil "UserDialogBoxMorph confirm: 'Make your choice carefully' withCRs title: 'Do you like chocolate?' trueChoice: 'Oh yessir!!' falseChoice: 'Not so much...'" ^self new title: titleString; message: aString; createButton: trueChoice translated value: true; + createButton: falseChoice translated value: false; + createCancelButton: 'Cancel' translated translated value: nil; - createCancelButton: falseChoice translated value: false; selectedButtonIndex: 1; registerKeyboardShortcuts; preferredPosition: (aPointOrNil ifNil: [ActiveWorld center]); getUserResponse! Item was changed: ----- Method: UserDialogBoxMorph class>>confirm:title:trueChoice:falseChoice:default:triggerAfter:at: (in category 'utilities') ----- confirm: aString title: titleString trueChoice: trueChoice falseChoice: falseChoice default: default triggerAfter: seconds at: aPointOrNil "UserDialogBoxMorph confirm: 'I like hot java' title: 'What do you say?' trueChoice: 'You bet!!' falseChoice: 'Nope' default: false triggerAfter: 12 at: 121@212" ^self new title: titleString; message: aString; createButton: trueChoice translated value: true; + createButton: falseChoice translated value: false; + createCancelButton: 'Cancel' translated translated value: nil; - createCancelButton: falseChoice translated value: false; selectedButtonIndex: (default ifTrue: [1] ifFalse: [2]); registerKeyboardShortcuts; preferredPosition: (aPointOrNil ifNil: [ActiveWorld center]); getUserResponseAfter: seconds!

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The Trunk: ToolBuilder-Morphic-mt.217.mcz
by commits＠source.squeak.org 04 May '18

04 May '18

Marcel Taeumel uploaded a new version of ToolBuilder-Morphic to project The Trunk: http://source.squeak.org/trunk/ToolBuilder-Morphic-mt.217.mcz ==================== Summary ==================== Name: ToolBuilder-Morphic-mt.217 Author: mt Time: 4 May 2018, 8:00:07.49707 am UUID: cd568389-663e-a647-9920-ff9ec82e9544 Ancestors: ToolBuilder-Morphic-pre.216 When adding a new item to the list via the ListChooser, allow for cancelling the (optional) confirmation step. =============== Diff against ToolBuilder-Morphic-pre.216 =============== Item was changed: ----- Method: ListChooser>>accept (in category 'actions') ----- accept "if the user submits with no valid entry, make them start over" | choice | self canAccept ifFalse: [ self canAdd ifTrue: [^ self add]. ^ self changed: #textSelection]. choice := self selectedItem. self canAdd ifTrue: [ "Ask the user whether to add the new item or choose the list selection." + (UserDialogBoxMorph + confirm: 'You can either choose an existing item or add a new one.\What do you want?' translated withCRs + title: 'Choose or Add' translated + trueChoice: choice asString + falseChoice: self searchText asString at: ActiveHand position) + ifNil: ["Cancelled" self result: nil. ^ self] + ifNotNil: [:answer | + answer ifTrue: [self result: choice] ifFalse: [self result: self searchText asString]] - (UserDialogBoxMorph confirm: 'You can either choose an existing item or add a new one.\What do you want?' translated withCRs title: 'Choose or Add' translated trueChoice: choice asString falseChoice: self searchText asString at: ActiveHand position) - ifTrue: [self result: choice] ifFalse: [self result: self searchText asString] ] ifFalse: [self result: choice]. self changed: #close.!

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The Trunk: Collections-nice.794.mcz
by commits＠source.squeak.org 04 May '18

04 May '18

Nicolas Cellier uploaded a new version of Collections to project The Trunk: http://source.squeak.org/trunk/Collections-nice.794.mcz ==================== Summary ==================== Name: Collections-nice.794 Author: nice Time: 4 May 2018, 12:48:13.071978 am UUID: 1ffc2862-2360-4a20-876b-782ae5cb72f5 Ancestors: Collections-eem.793 Provide CharacterSet includesCode: and also ASCII and non ASCII maps. =============== Diff against Collections-eem.793 =============== Item was removed: - ----- Method: ByteCharacterSet>>includes: (in category 'testing') ----- - includes: anObject - - | index | - anObject isCharacter ifFalse: [ ^false ]. - (index := anObject asInteger + 1) > 256 ifTrue: [ ^false ]. - ^(byteArrayMap at: index) > 0! Item was added: + ----- Method: ByteCharacterSet>>includesCode: (in category 'testing') ----- + includesCode: anInteger + anInteger > 255 ifTrue: [ ^false ]. + ^(byteArrayMap at: anInteger + 1) > 0! Item was changed: Collection subclass: #CharacterSet instanceVariableNames: 'byteArrayMap' + classVariableNames: 'Ascii CrLf NonAscii NonSeparators Separators' - classVariableNames: 'CrLf NonSeparators Separators' poolDictionaries: '' category: 'Collections-Support'! !CharacterSet commentStamp: '<historical>' prior: 0! A set of characters. Lookups for inclusion are very fast.! Item was added: + ----- Method: CharacterSet class>>ascii (in category 'accessing') ----- + ascii + "return a set containing all the ASCII characters" + + ^Ascii ifNil: [ Ascii := self newFrom: ((1 to: 127) collect: [:code | code asCharacter]) ]! Item was added: + ----- Method: CharacterSet class>>nonAscii (in category 'accessing') ----- + nonAscii + "return a set containing all the non ASCII characters" + + ^NonAscii ifNil: [ NonAscii := self ascii complement ]! Item was changed: ----- Method: CharacterSet>>createByteArrayMap (in category 'private') ----- createByteArrayMap + ^ (0 to: 255) + collect: [:i | (self includesCode: i) ifTrue: [1] ifFalse: [0]] + as: ByteArray! - ^ (0 to: 255) asByteArray collect: - [:i | (self includes: (Character value: i)) ifTrue: [1] ifFalse: [0]]! Item was added: + ----- Method: CharacterSet>>includes: (in category 'testing') ----- + includes: anObject + anObject isCharacter ifFalse: [ ^false ]. + ^self includesCode: anObject asInteger! Item was added: + ----- Method: CharacterSet>>includesCode: (in category 'testing') ----- + includesCode: anInteger + ^self subclassResponsibility! Item was removed: - ----- Method: CharacterSetComplement>>includes: (in category 'testing') ----- - includes: anObject - - anObject isCharacter ifFalse: [ ^false ]. - (absent includes: anObject) ifTrue: [ ^false ]. - ^true! Item was added: + ----- Method: CharacterSetComplement>>includesCode: (in category 'testing') ----- + includesCode: anInteger + (absent includesCode: anInteger) ifTrue: [ ^false ]. + ^true! Item was added: + ----- Method: LazyCharacterSet>>includesCode: (in category 'testing') ----- + includesCode: anInteger + ^block value: (Character value: anInteger)! Item was changed: + ----- Method: WeakIdentityDictionary>>removeUnreferencedKeys (in category 'removing') ----- - ----- Method: WeakIdentityDictionary>>removeUnreferencedKeys (in category 'as yet unclassified') ----- removeUnreferencedKeys "Make sure tally is set to the right size by #compact." super removeUnreferencedKeys. self compact! Item was removed: - ----- Method: WideCharacterSet>>includes: (in category 'testing') ----- - includes: anObject - - | value | - anObject isCharacter ifFalse: [ ^false ]. - (value := anObject asInteger) < 256 ifTrue: [ - ^(byteArrayMap at: value + 1) ~= 0 ]. - ^((map at: (value bitShift: highBitsShift) ifAbsent: nil) ifNil: [ ^false ]) - includes: (value bitAnd: lowBitsMask)! Item was added: + ----- Method: WideCharacterSet>>includesCode: (in category 'testing') ----- + includesCode: anInteger + anInteger < 256 ifTrue: [ ^(byteArrayMap at: anInteger + 1) ~= 0 ]. + ^((map at: (anInteger bitShift: highBitsShift) ifAbsent: nil) ifNil: [ ^false ]) + includes: (anInteger bitAnd: lowBitsMask)!

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The Trunk: System-kfr.1022.mcz
by commits＠source.squeak.org 03 May '18

03 May '18

Karl Ramberg uploaded a new version of System to project The Trunk: http://source.squeak.org/trunk/System-kfr.1022.mcz ==================== Summary ==================== Name: System-kfr.1022 Author: kfr Time: 3 May 2018, 8:03:36.590229 pm UUID: 53fd1f63-34eb-f24e-ac23-99850d5b6f09 Ancestors: System-eem.1021 Class needed for bringing in old projects. =============== Diff against System-eem.1021 =============== Item was added: + ClassCategoryReader subclass: #RenamedClassSourceReader + instanceVariableNames: '' + classVariableNames: '' + poolDictionaries: '' + category: 'System-Object Storage'! Item was added: + ----- Method: RenamedClassSourceReader class>>formerClassName:methodsFor:stamp: (in category 'as yet unclassified') ----- + formerClassName: formerClassName methodsFor: aCategory stamp: aString + + ^self new + setClass: formerClassName + category: aCategory + changeStamp: aString! Item was added: + ----- Method: RenamedClassSourceReader class>>scanner (in category 'as yet unclassified') ----- + scanner + + ^self new! Item was added: + ----- Method: RenamedClassSourceReader>>scanFrom: (in category 'as yet unclassified') ----- + scanFrom: aStream + + self flag: #bob. "should this ever happen?" + self halt.! Item was added: + ----- Method: RenamedClassSourceReader>>scanFromNoCompile: (in category 'as yet unclassified') ----- + scanFromNoCompile: aStream + + self flag: #bob. "should this ever happen?" + self halt.! Item was added: + ----- Method: RenamedClassSourceReader>>scanFromNoCompile:forSegment: (in category 'as yet unclassified') ----- + scanFromNoCompile: aStream forSegment: anImageSegment + "Just move the source code for the methods from aStream." + | methodText d | + + [ + (methodText _ aStream nextChunkText) size > 0 + ] whileTrue: [ + (SourceFiles at: 2) ifNotNil: [ + d _ Dictionary new. + d + at: #oldClassName put: class; "may be 'Player1' or 'Player1 class'" + at: #methodText put: methodText; + at: #changeStamp put: changeStamp; + at: #category put: category. + anImageSegment acceptSingleMethodSource: d. + ] + ]!

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The Trunk: Morphic-kfr.1424.mcz
by commits＠source.squeak.org 03 May '18

03 May '18

Karl Ramberg uploaded a new version of Morphic to project The Trunk: http://source.squeak.org/trunk/Morphic-kfr.1424.mcz ==================== Summary ==================== Name: Morphic-kfr.1424 Author: kfr Time: 3 May 2018, 8:09:18.476229 pm UUID: 4e43a771-b83b-9a48-9633-6665d351ae79 Ancestors: Morphic-kfr.1423 Guard against textStyle = nil =============== Diff against Morphic-kfr.1423 =============== Item was changed: ----- Method: TextMorph>>fixUponLoad:seg: (in category 'objects from disk') ----- fixUponLoad: aProject seg: anImageSegment "We are in an old project that is being loaded from disk. Fix up conventions that have changed." + | substituteFont includesSubstituteFont | - | substituteFont | substituteFont := aProject projectParameters at: #substitutedFont ifAbsent: [#none]. + includesSubstituteFont := false. + self textStyle ifNotNil: [includesSubstituteFont := self textStyle fontArray includes: substituteFont]. + (substituteFont ~~ #none and: [includesSubstituteFont]) - (substituteFont ~~ #none and: [self textStyle fontArray includes: substituteFont]) ifTrue: [ self fit ]. ^ super fixUponLoad: aProject seg: anImageSegment!

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The Trunk: Collections-eem.793.mcz
by commits＠source.squeak.org 03 May '18

03 May '18

Eliot Miranda uploaded a new version of Collections to project The Trunk: http://source.squeak.org/trunk/Collections-eem.793.mcz ==================== Summary ==================== Name: Collections-eem.793 Author: eem Time: 3 May 2018, 10:36:26.780414 am UUID: 9e90b3ee-26a8-44d7-850c-e7b0c54fe0a6 Ancestors: Collections-eem.792 revert =============== Diff against Collections-eem.792 =============== Item was changed: ----- Method: String>>isAsciiString (in category 'testing') ----- isAsciiString + + ^self allSatisfy: [ :each | each asciiValue <= 127 ]! - "Answer if the receiver contains only ascii characters. - Inline ^self allSatisfy: [ :each | each asciiValue <= 127 ] for speed." - 1 to: self basicSize do: [:i| (self basicAt: i) > 127 ifTrue: [^false]]. - ^true!

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How do I move a morph from one project to another?
by Chris Cunningham 03 May '18

03 May '18

Hi. I had a progress morph that opened up in one project, and then was stuck (background progress had an issue). I left the progress up and ignored the bug for a bit - I needed to switch to a different project for other work. That other work also opened the system progress morph, and naturally moved the single system progress morph to this other project. I now won't to go back to the original project and work through the bug. Of course, the progress is in the wrong project now - I'd like it back in the project that it is showing the progess for. Is there a magic menu item somewhere that I can send a morph to a specific project? It is a sibling project - the project the morph is in and the project I want to move the morph to are both children of the same 'parent' project. (Of course, I can just cause the progress morph to move by showing more progress - but I'd like to know in general. I can move morphs down into projects - just drag and drop. Not sure how to move them up or over.) -cbc

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The Trunk: Network-eem.224.mcz
by commits＠source.squeak.org 03 May '18

03 May '18

Eliot Miranda uploaded a new version of Network to project The Trunk: http://source.squeak.org/trunk/Network-eem.224.mcz ==================== Summary ==================== Name: Network-eem.224 Author: eem Time: 3 May 2018, 12:54:19.600192 am UUID: d2a302ef-6dfa-405c-af25-c428b2e90431 Ancestors: Network-pre.223 Use isAsciiString instead of inlining it using isAscii, which permits performance improvement if isAsciiString is well-implemented. =============== Diff against Network-pre.223 =============== Item was changed: ----- Method: MIMEHeaderValue>>asHeaderValue (in category 'printing') ----- asHeaderValue | strm result | strm := WriteStream on: (String new: 20). strm nextPutAll: mainValue. parameters associationsDo: [:e | strm nextPut: $; ; nextPutAll: e key; nextPutAll: '='; nextPutAll: e value]. + ^ (result := strm contents) isAsciiString + ifFalse: [QEncodingMimeConverter mimeEncode: result] + ifTrue: [result] - ^ ((result := strm contents) anySatisfy: [:c | c isAscii not]) - ifTrue: [QEncodingMimeConverter mimeEncode: result] - ifFalse: [result] !

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