March 2012 - Pharo-dev - lists.pharo.org

[Pharo-project] does anybody knows what is updateReferencesUsing: aDictionary
by StÃ©phane Ducasse March 6, 2012

March 6, 2012

SimpleButtonMorph>>updateReferencesUsing: aDictionary "Copy and update references in the arguments array during copying." super updateReferencesUsing: aDictionary. arguments _ arguments collect: [:old | aDictionary at: old ifAbsent: [old]]. no users. I would remove it. Stef

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[Pharo-project] Filesystem onDisk and inMemory are renamed in 1.4
by Tudor Girba March 6, 2012

March 6, 2012

Hi, Filesystem is part of the Pharo 1.4 image and the code resides in the Pharo 1.4 repository. Essentially, as Lukas pointed out, this is a fork. There is absolutely nothing wrong with that, especially if you want to base the core on it. However, the problem is what happens with the changes. Do they flow back to the original author, or do you want to fork completely? Of course, a collaboration requires at least two parties to work together :), but it would still be cool to get the position clear. Of course, some changes are internal and they have little impact on the end user, but sometimes the public interface changes, too, and that is more problematic. Case in point are the onDisk and inMemory methods which were renamed to disk and memory, respectively. This basically breaks any previous code that is using Filesystem. Is there a particular reason for doing this (the original names seem perfectly legitimate), or was it just a mistake? Cheers, Doru -- www.tudorgirba.com "Every thing has its own flow"

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[Pharo-project] why improving is the only way
by StÃ©phane Ducasse March 6, 2012

March 6, 2012

I'm fighting with timeStamp and old code checking size of timeStamp and this is why we should improve the infrastructure and in particular code management. Stef timeStamp "Answer the authoring time-stamp for the given method, retrieved from the sources or changes file. Answer the empty string if no time stamp is available." "(CompiledMethod compiledMethodAt: #timeStamp) timeStamp" | file preamble stamp tokens tokenCount | self fileIndex = 0 ifTrue: [^ String new]. "no source pointer for this method" file := SourceFiles at: self fileIndex. file ifNil: [^ String new]. "sources file not available" "file does not exist happens in secure mode" file := [file readOnlyCopy] on: FileDoesNotExistException do:[:ex| ^ String new]. preamble := self getPreambleFrom: file at: (0 max: self filePosition - 3). stamp := String new. tokens := (preamble findString: 'methodsFor:' startingAt: 1) > 0 ifTrue: [Scanner new scanTokens: preamble] ifFalse: [Array new "ie cant be back ref"]. (((tokenCount := tokens size) between: 7 and: 8) and: [(tokens at: tokenCount - 5) = #methodsFor:]) ifTrue: [(tokens at: tokenCount - 3) = #stamp: ifTrue: ["New format gives change stamp and unified prior pointer" stamp := tokens at: tokenCount - 2]]. ((tokenCount between: 5 and: 6) and: [(tokens at: tokenCount - 3) = #methodsFor:]) ifTrue: [(tokens at: tokenCount - 1) = #stamp: ifTrue: ["New format gives change stamp and unified prior pointer" stamp := tokens at: tokenCount]]. file close. ^ stamp there are a couple of method with such logic. Stef

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[Pharo-project] fix GoferOperationTest failure
by Pavel Krivanek March 6, 2012

March 6, 2012

There is a new failure related to Camillo's changes to UIManagers. http://code.google.com/p/pharo/issues/detail?id=5439 I proposed a fix. Cheers, -- Pavel

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[Pharo-project] in 14379...
by StÃ©phane Ducasse March 6, 2012

March 6, 2012

Hi guys when I try to load MCSqueaksourceRepository location: 'http://squeaksource.com/Games' user: '' password: '' load MorphicGames-md.1.mcz I get a DNU isPostMortem "return whether we're inspecting a frozen exception without a process attached" |selectedContext| selectedContext := self selectedContext. (interruptedProcess suspendedContext == selectedContext) ifTrue: [ ^ false ]. ^ (interruptedProcess suspendedContext findContextSuchThat: [:c | c sender == selectedContext]) isNil ^^^^^^ DNU findContextSuchThat: interruptedProcess suspendedContext is a MethodContext Now I do not understand since find findContextSuchThat: is defined in ContextPart the super class of MethodContext. Stef

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Re: [Pharo-project] in 14379...
by Marcus Denker March 6, 2012

March 6, 2012

On Mar 6, 2012, at 12:08 PM, StÃ©phane Ducasse wrote: > Hi guys > > when I try to load > > MCSqueaksourceRepository > location: 'http://squeaksource.com/Games' > user: '' > password: '' > > load MorphicGames-md.1.mcz > > I get a DNU > > isPostMortem > "return whether we're inspecting a frozen exception without a process attached" > |selectedContext| > selectedContext := self selectedContext. > (interruptedProcess suspendedContext == selectedContext) > ifTrue: [ ^ false ]. > ^ (interruptedProcess suspendedContext findContextSuchThat: [:c | c sender == selectedContext]) isNil > > ^^^^^^ DNU findContextSuchThat: > > > interruptedProcess suspendedContext is a MethodContext > > Now I do not understand since find findContextSuchThat: is defined in ContextPart the super class of MethodContext. > This is related to the startup changes we integrated yesterday. (there is no change that has no side effect...) Marcus -- Marcus Denker -- http://marcusdenker.de

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Re: [Pharo-project] The event handling mechanism implemented in Gaucho
by Fernando Olivero March 6, 2012

March 6, 2012

Here is the code, the categories which include the mentioned classes. I'm preparing a one-click image of Gaucho for the Mac, so you can play with it also. And as the official release of the tool also! On Tue, Mar 6, 2012 at 12:33 PM, fernando.olivero(a)usi.ch <fernando.olivero(a)usi.ch> wrote: > Hi, Stef and Esteban, i'm sending an overview of the event handling > mechanism of Gaucho. So we can discuss the additions of multitouch > events and the design as well. > > > Key classes: GUserInterface, GPeripheralDevice, GDisplay, GView and > the new event model. > > GUserInterface: Collaborates with a sensor, and double dispatches the > event to the proper peripheral device. > > GMouse,GKeyboard: a peripheral device that distinguishes the system > event, and sends the user interface Â specific reactions: such as > > #mouse: aGMouse entered: aGShape > #keystroke: aGKeystroke from: aGKeyboard > > No reification of the events, just message passing amongst the user > interface, the peripherals, the display, the views, and the shapes. > > EXAMPLE > -------------------------------------------------------- > EVENTS: from the user to the shape > -------------------------------------------------------- > 1)the user clicks on the mouse > 2) a system event is announced > 3) the user interface dispatches it to the attached mouse > 4) the mouse detects that its a click to a particular shape on a view > of the display and informs the user interface > 5) the user interface informs the display of the click > > ------------------------------------------------------------------------ > VIEW: shape reacting to events and redrawing > -------------------------------------------------------------------------- > 6) the display informs the active view > 7) the active view informs the shape > 8) the shape reacts to the click. > 9)the display asks the shape wether it should redraw, and informs the > damage recorder. Gaucho implements a visual garbage collector scheme, > so the code is not polluted with #changed ,similar to eliminating the > need to send #alloc and #dealloc on memory garbage collector. But this > is surely for another thread. >

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March 6, 2012

Hi guys I'm looking for the package containing tetris, free cell, â¦ does any of you know where it is? Stef

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[Pharo-project] The event handling mechanism implemented in Gaucho
by Fernando Olivero March 6, 2012

March 6, 2012

Hi, Stef and Esteban, i'm sending an overview of the event handling mechanism of Gaucho. So we can discuss the additions of multitouch events and the design as well. Key classes: GUserInterface, GPeripheralDevice, GDisplay, GView and the new event model. GUserInterface: Collaborates with a sensor, and double dispatches the event to the proper peripheral device. GMouse,GKeyboard: a peripheral device that distinguishes the system event, and sends the user interface specific reactions: such as #mouse: aGMouse entered: aGShape #keystroke: aGKeystroke from: aGKeyboard No reification of the events, just message passing amongst the user interface, the peripherals, the display, the views, and the shapes. EXAMPLE -------------------------------------------------------- EVENTS: from the user to the shape -------------------------------------------------------- 1)the user clicks on the mouse 2) a system event is announced 3) the user interface dispatches it to the attached mouse 4) the mouse detects that its a click to a particular shape on a view of the display and informs the user interface 5) the user interface informs the display of the click ------------------------------------------------------------------------ VIEW: shape reacting to events and redrawing -------------------------------------------------------------------------- 6) the display informs the active view 7) the active view informs the shape 8) the shape reacts to the click. 9)the display asks the shape wether it should redraw, and informs the damage recorder. Gaucho implements a visual garbage collector scheme, so the code is not polluted with #changed ,similar to eliminating the need to send #alloc and #dealloc on memory garbage collector. But this is surely for another thread.

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March 6, 2012

I'm fixing it. Stef

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