Packages August 2010

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The Trunk: MonticelloConfigurations-cbc.82.mcz
by commits＠source.squeak.org 27 Aug '10

27 Aug '10

Bert Freudenberg uploaded a new version of MonticelloConfigurations to project The Trunk: http://source.squeak.org/trunk/MonticelloConfigurations-cbc.82.mcz ==================== Summary ==================== Name: MonticelloConfigurations-cbc.82 Author: cbc Time: 25 August 2010, 11:54:43.082 pm UUID: 8fee1f94-014b-9949-9125-4649684d4c66 Ancestors: MonticelloConfigurations-cbc.81 Updated comment for MCMcmUpdater to explain the recent changes to this class. =============== Diff against MonticelloConfigurations-cbc.81 =============== Item was changed: Object subclass: #MCMcmUpdater instanceVariableNames: '' classVariableNames: 'DefaultUpdateURL LastUpdateMap SkipPackages UpdateMissingPackages' poolDictionaries: '' category: 'MonticelloConfigurations'! + !MCMcmUpdater commentStamp: 'cbc 8/25/2010 23:52' prior: 0! - !MCMcmUpdater commentStamp: 'dtl 5/10/2010 23:22' prior: 0! MCMcmUpdater provides utility methods for updating Monticello packages from Monticello configurations. + When Monticello configurations are stored in a repository (or repositories), MCMcmUpdater acts as an update stream. It first ensures that each configuration map has been loaded in sequence, then updates the last configuration map to the most recent version for each specified package, and finally loads these versions to produce a fully updated configuration. + + Currently if a set of packages are unloaded from the image, using this class to reload them may cause problems, depending on what dependencies those classes have. Success is not assured. + + If you wish to not have MCMcmUpdater update packages, there are two ways to handle this: + 1) To not update any packages not currently in the image, evaluate + MCMcmUpdater updateMissingPackages: false + Note that any new packages added to the repositories will not be picked up when this is turned off. + To re-enable updating of missing packages disabled in this way, evaluate + MCMcmUpdater updateMissingPackages: true + 2) To not updat specific packages, evaluate + MCMcmUpdater disableUpdatesOfPackage: <packageName> + To re-enable updating of a specific package turned of by method 2, evaluate: + MCMcmUpdater enableUpdatesOfPackage: <packageName> + To re-enable updating of all packages previously disabled by method 2, evaluate + MCMcmUpdator enableUpdatesForAllPackages + + Note that work is progressing to automatically not update packages that are unloaded. At this time, this is not turned on. + + Class Variables definitions: + + DefaultUpdateURL - this is the URL that will be checked by default for updates. This would be set for a common standard location to check. + + LastUpdateMap - Keeps track of the last configuration map, so that the utility will not have to run through the full history in the repositories each time you ask to update. + + SkipPackages - Keeps track of the specific packages that are not to be updated in this image (usually because they were unloaded). + + UpdateMissingPackages - Indicates if this utility should attempt to load packages that are not currently in the system. + ! - When Monticello configurations are stored in a repository, MCMcmUpdater acts as an update stream. It first ensures that each configuration map has been loaded in sequence, then updates the last configuration map to the most recent version for each specified package, and finally loads these versions to produce a fully updated configuration. !

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The Trunk: System-cbc.363.mcz
by commits＠source.squeak.org 27 Aug '10

27 Aug '10

Bert Freudenberg uploaded a new version of System to project The Trunk: http://source.squeak.org/trunk/System-cbc.363.mcz ==================== Summary ==================== Name: System-cbc.363 Author: cbc Time: 26 August 2010, 4:27:56.467 pm UUID: bac80124-a05f-dd47-b1ae-f52d4b172282 Ancestors: System-mha.362 Modified SmalltalkImage>>unloadAllKnownPackages to flag those packages to be ignored in future trunk updates. =============== Diff against System-mha.362 =============== Item was changed: ----- Method: SmalltalkImage>>unloadAllKnownPackages (in category 'shrinking') ----- unloadAllKnownPackages "Unload all packages we know how to unload and reload" "Prepare unloading" Smalltalk zapMVCprojects. Flaps disableGlobalFlaps: false. StandardScriptingSystem removeUnreferencedPlayers. Project removeAllButCurrent. #('Morphic-UserObjects' 'EToy-UserObjects' 'Morphic-Imported' ) do: [:each | SystemOrganization removeSystemCategory: each]. Smalltalk at: #ServiceRegistry ifPresent:[:aClass| SystemChangeNotifier uniqueInstance noMoreNotificationsFor: aClass. ]. World removeAllMorphs. "Go unloading" #( 'ReleaseBuilder' 'ScriptLoader' '311Deprecated' '39Deprecated' 'Universes' 'SMLoader' 'SMBase' 'Installer-Core' 'VersionNumberTests' 'VersionNumber' 'Services-Base' 'PreferenceBrowser' 'Nebraska' 'ToolBuilder-MVC' 'ST80' 'CollectionsTests' 'GraphicsTests' 'KernelTests' 'MorphicTests' 'MultilingualTests' 'NetworkTests' 'ToolsTests' 'TraitsTests' 'SystemChangeNotification-Tests' 'FlexibleVocabularies' 'EToys' 'Protocols' 'XML-Parser' 'Tests' 'SUnitGUI' + ) do: [:pkgName| + (MCPackage named: pkgName) unload. + MCMcmUpdater disableUpdatesOfPackage: pkgName. + ]. - ) do:[:pkgName| (MCPackage named: pkgName) unload]. "Traits use custom unload" Smalltalk at: #Trait ifPresent:[:aClass| aClass unloadTraits]. "Post-unload cleanup" MCWorkingCopy flushObsoletePackageInfos. SystemOrganization removeSystemCategory: 'UserObjects'. Presenter defaultPresenterClass: nil. World dumpPresenter. ScheduledControllers := nil. Preferences removePreference: #allowEtoyUserCustomEvents. SystemOrganization removeEmptyCategories. ChangeSet removeChangeSetsNamedSuchThat:[:cs | (cs == ChangeSet current) not]. Undeclared removeUnreferencedKeys. StandardScriptingSystem initialize. MCFileBasedRepository flushAllCaches. MCDefinition clearInstances. Behavior flushObsoleteSubclasses. ChangeSet current clear. ChangeSet current name: 'Unnamed1'. Smalltalk flushClassNameCache. Smalltalk at: #Browser ifPresent:[:br| br initialize]. DebuggerMethodMap voidMapCache. DataStream initialize. Smalltalk forgetDoIts. AppRegistry removeObsolete. FileServices removeObsolete. Preferences removeObsolete. TheWorldMenu removeObsolete. Smalltalk garbageCollect. Symbol compactSymbolTable. TheWorldMainDockingBar updateInstances. MorphicProject defaultFill: (Color gray: 0.9). World color: (Color gray: 0.9). !

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The Trunk: System-cbc.363.mcz
by commits＠source.squeak.org 27 Aug '10

27 Aug '10

1 0

The Trunk: System-cbc.363.mcz
by commits＠source.squeak.org 27 Aug '10

27 Aug '10

1 0

The Trunk: Collections-nice.372.mcz
by commits＠source.squeak.org 26 Aug '10

26 Aug '10

Nicolas Cellier uploaded a new version of Collections to project The Trunk: http://source.squeak.org/trunk/Collections-nice.372.mcz ==================== Summary ==================== Name: Collections-nice.372 Author: nice Time: 26 August 2010, 10:38:04.98 pm UUID: e9206906-ab54-4076-af3f-bf1bd833aa4e Ancestors: Collections-ar.371 Enhance Dictionary comment. Fix Set comment, a Set can includes: nil. Fix a typo in IdentitySet. Comment KeyedIdentitySet and SetElement. Note: I didn't make any effort wrt style homogeneity. Prefered style should be defined first. =============== Diff against Collections-ar.371 =============== Item was changed: Set subclass: #IdentitySet instanceVariableNames: '' classVariableNames: '' poolDictionaries: '' category: 'Collections-Unordered'! + !IdentitySet commentStamp: 'nice 8/26/2010 22:00' prior: 0! - !IdentitySet commentStamp: 'sw 1/14/2003 22:35' prior: 0! The same as a Set, except that items are compared using #== instead of #=. Almost any class named IdentityFoo is the same as Foo except for the way items are compared. In Foo, #= is used, while in IdentityFoo, #== is used. That is, identity collections will treat items as the same only if they have the same identity. For example, note that copies of a string are equal: ('abc' copy) = ('abc' copy) + but they are not identical: - but they are not identitcal: ('abc' copy) == ('abc' copy) A regular Set will only include equal objects once: | aSet | aSet := Set new. aSet add: 'abc' copy. aSet add: 'abc' copy. aSet An IdentitySet will include multiple equal objects if they are not identical: | aSet | aSet := IdentitySet new. aSet add: 'abc' copy. aSet add: 'abc' copy. aSet ! Item was changed: HashedCollection subclass: #Dictionary instanceVariableNames: '' classVariableNames: '' poolDictionaries: '' category: 'Collections-Unordered'! + !Dictionary commentStamp: 'nice 8/26/2010 22:30' prior: 0! + A Dictionary is an unordered collection of values which are indexed by arbitrary keys. + A Dictionary is accessed via #at: and #at:put: messages like a SequenceableCollection, but instead of being Integer, the keys can be any object that responds to =. + + The = message is used to test for the existence of the key in the Dictionary. + If the key is absent, #at:put: adds a new entry to the Dictionary. + + (Dictionary new) + at: 'foo' put: 1; + at: 'bar' put: 8; + yourself. + + Each key is unique: storing another value with #at:put: at an already used key overwrites previously associated value. + + (Dictionary new) + at: 'bar' put: 4; + at: 'bar' put: 8; + at: 'bar'. + + The values are not necessarily unique, thus a Dictionary can also be seen as a sort of Bag with this respect. + + (Dictionary new) + at: 'foo' put: 8; + at: 'bar' put: 8; + yourself. + + If the key is absent, #at: raises an Error. An alternate block of code can be executed and its value returned in this case using #at:ifAbsent:. + See also #at:ifAbsentPut:. + + (Dictionary new) at: 'foo' ifAbsent: [nil]. + + Dictionary is implemented as a HashedCollection of Association (a value is associated to its key et vice et versa). + Being a HashedCollection enables fast random access indexed by keys. + Consequently, keys must respond to #hash (see super). + + BEWARE: as for every HashedCollection, it is better to not modify an object after it is used as a Dictionary key. The reason is that this might change the #hash code, making the Dictionary unable to find corresponding entry, or make two keys equal violating uniqueness. It's progammer responsibility to take care to not modify the keys, or eventually to send #rehash to the Dictionary if they ever happen to change. + + It is possible to grow or shrink a Dictionary using the messages #add: and #remove: with an Association parameter, however the prefered way to do so is using #at:put: and #removeKey:. + BEWARE: as for super, space reserved in internal storage array can grow but never shrink. + + For conveniency, it is also possible to create a Dictionary out of a Collection of associations, as for example in: + + {'foo' -> 1. 'bar' -> 8} as: Dictionary. + Dictionary withAll: {'foo' -> 1. 'bar' -> 8}. + Dictionary new addAll: {'foo' -> 1. 'bar' -> 8}; yourself. + + BEWARE: though a Sequence collection can be considered as a sequence of values with Integer keys (see #keysAndValuesDo: ), it cannot be converted into a Dictionary using these keys, and following message will fail: + + #('foo' 'bar') as: Dictionary. + + Enumerating a Dictionary with #do: will only enumerate the values, not the keys. + Remember, the order of evaluation is arbitrary and can change when you grow or shrink a Dictionary. + + ({'foo' -> 1. 'bar' -> 8} as: Dictionary) do: [:each | Transcript cr; show: each printString]. + + For enumerating keys and values, use #keysAndValuesDo:, or use #associationsDo: to enumerate the associations. + #select: #reject: #collect: will operate on values while preserving the keys and thus answer a new Dictionary. + + ({'foo' -> 1. 'bar' -> 8} as: Dictionary) collect: [:each | each squared]. + + The keys and values of a Dictionary can be extracted by sending #keys and #values message. + Though the keys are theoretically a Set and values a Bag, for efficiency reasons, these messages will both return an Array of keys + and an Array of values. A neat feature is that these messages are preserving the arbitrary storage order - in other words, (aDictionary values at: 3) is the value associated to key (aDictionary keys at: 3).! - !Dictionary commentStamp: '<historical>' prior: 0! - I represent a set of elements that can be viewed from one of two perspectives: a set of associations, or a container of values that are externally named where the name can be any object that responds to =. The external name is referred to as the key. I inherit many operations from Set.! Item was changed: HashedCollection subclass: #Set instanceVariableNames: '' classVariableNames: '' poolDictionaries: '' category: 'Collections-Unordered'! + !Set commentStamp: 'nice 8/26/2010 22:14' prior: 0! - !Set commentStamp: '<historical>' prior: 0! I represent a set of objects without duplicates. I can hold anything that responds to + #hash and #=, except for nil. My instances will automatically grow, if necessary. - #hash and #=, except for nil. My instances will automatically grow, if necessary, Note that I rely on #=, not #==. If you want a set using #==, use IdentitySet. Instance structure: array An array whose non-nil elements are the elements of the set, and whose nil elements are empty slots. There is always at least one nil. In fact I try to keep my "load" at 75% or less so that hashing will work well. tally The number of elements in the set. The array size is always greater than this. + The core operation is #scanFor:, which either finds the position where an - The core operation is #findElementOrNil:, which either finds the position where an object is stored in array, if it is present, or finds a suitable position holding nil, if + its argument is not present in array. + + I can include an UndefinedObject (nil) thanks to a special implementation using a wrapper (see message #asSetElement and class SetElement). + Indeed, a nil entry in the storage array means vacuity, it cannot mean I contain nil.! - its argument is not present in array,! Item was changed: KeyedSet subclass: #KeyedIdentitySet instanceVariableNames: '' classVariableNames: '' poolDictionaries: '' category: 'Collections-Unordered'! + + !KeyedIdentitySet commentStamp: 'nice 8/26/2010 22:01' prior: 0! + A KeyedIdentitySet is like a Bag, except that items are compared with #== instead of #= . + + See the comment of IdentitySet for more information.! Item was changed: Object subclass: #SetElement instanceVariableNames: 'enclosedElement' classVariableNames: 'NilElement' poolDictionaries: '' category: 'Collections-Support'! + + !SetElement commentStamp: 'nice 8/26/2010 22:21' prior: 0! + A SetElement is a special wrapper used to handle addition of some special elements into Set. + This is necessary mainly for storing an UndefinedObject in a Set, since nil is used in Set algorithm to designate free slots in internal storage. + + Instance Variables + enclosedElement: <Object> + + enclosedElement + - the real element we wish to put into the set + !

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The Trunk: Collections-nice.372.mcz
by commits＠source.squeak.org 26 Aug '10

26 Aug '10

1 0

The Trunk: Collections-nice.372.mcz
by commits＠source.squeak.org 26 Aug '10

26 Aug '10

1 0

The Trunk: System-mha.362.mcz
by commits＠source.squeak.org 26 Aug '10

26 Aug '10

Michael Haupt uploaded a new version of System to project The Trunk: http://source.squeak.org/trunk/System-mha.362.mcz ==================== Summary ==================== Name: System-mha.362 Author: mha Time: 26 August 2010, 9:03:04.776 am UUID: 54a02fd0-31d0-4a23-af2e-0d8410ff82b9 Ancestors: System-hjh.361 Added an example to the comment of SystemNavigation. (Submitted by Hannes Hirzel.) =============== Diff against System-nice.360 =============== Item was changed: Object subclass: #SystemNavigation instanceVariableNames: 'browserClass hierarchyBrowserClass' classVariableNames: 'Default' poolDictionaries: '' category: 'System-Support'! + !SystemNavigation commentStamp: 'mha 8/26/2010 09:02' prior: 0! - !SystemNavigation commentStamp: 'sd 4/15/2003 22:30' prior: 0! I support the navigation of the system. I act as a facade but as I could require some state + or different way of navigating the system all my behavior are on the instance side. + + + For example if you want to look at all methods you have written or changed in the current image do + + SystemNavigation new browseAllSelect: [ :method | + method fileIndex > 1 "only look at changes file" + and: [ method timeStamp beginsWith: 'your-initials-here' ] ]. + + ! - or different way of navigating the system all my behavior are on the instance side!

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The Trunk: System-mha.362.mcz
by commits＠source.squeak.org 26 Aug '10

26 Aug '10

1 0

The Trunk: System-mha.362.mcz
by commits＠source.squeak.org 26 Aug '10

26 Aug '10

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Packages August 2010