Smalltalk current createPackage: 'Kernel-Classes'! Object subclass: #Behavior instanceVariableNames: '' package: 'Kernel-Classes'! !Behavior commentStamp! I am the superclass of all class objects. I define the protocol for creating instances of a class with `#basicNew` and `#new` (see `boot.js` for class constructors details). My instances know about the subclass/superclass relationships between classes, contain the description that instances are created from, and hold the method dictionary that's associated with each class. I also provides methods for compiling methods, examining the method dictionary, and iterating over the class hierarchy.! !Behavior methodsFor: 'accessing'! >> aString ^ self methodAt: aString ! allInstanceVariableNames | result | result := self instanceVariableNames copy. self superclass ifNotNil: [ result addAll: self superclass allInstanceVariableNames]. ^result ! allSelectors ^ self allSuperclasses inject: self selectors into: [ :acc :each | acc addAll: each selectors; yourself ] ! allSubclasses "Answer an collection of the receiver's and the receiver's descendent's subclasses. " | subclasses index | subclasses := self subclasses. index := 1. [ index > subclasses size ] whileFalse: [ subclasses addAll: (subclasses at: index) subclasses. index := index + 1 ]. ^ subclasses ! allSuperclasses self superclass ifNil: [ ^ #() ]. ^ (OrderedCollection with: self superclass) addAll: self superclass allSuperclasses; yourself ! comment ^(self basicAt: 'comment') ifNil: [''] ! comment: aString self basicAt: 'comment' put: aString. SystemAnnouncer current announce: (ClassCommentChanged new theClass: self; yourself) ! commentStamp ^ClassCommentReader new class: self; yourself ! commentStamp: aStamp prior: prior ^self commentStamp ! definition ^ '' ! instanceVariableNames ! javascriptConstructor "Answer the JS constructor used to instantiate. See boot.js" ! javascriptConstructor: aJavaScriptFunction "Set the JS constructor used to instantiate. See the JS counter-part in boot.js `smalltalk.setClassConstructor'" ! lookupSelector: selector "Look up the given selector in my methodDictionary. Return the corresponding method if found. Otherwise chase the superclass chain and try again. Return nil if no method is found." | lookupClass | lookupClass := self. [ lookupClass = nil ] whileFalse: [ (lookupClass includesSelector: selector) ifTrue: [ ^ lookupClass methodAt: selector ]. lookupClass := lookupClass superclass ]. ^ nil ! methodAt: aString ^ self methodDictionary at: aString ! methodDictionary ! methods ^ self methodDictionary values ! methodsFor: aString ^ClassCategoryReader new class: self category: aString; yourself ! methodsFor: aString stamp: aStamp "Added for compatibility, right now ignores stamp." ^self methodsFor: aString ! methodsInProtocol: aString ^ (self methodDictionary values select: [ :each | each protocol = aString ]) sorted: [ :a :b | a selector <= b selector ] ! name ! organization ^ self basicAt: 'organization' ! ownMethods "Answer the methods of the receiver that are not package extensions" ^ (self ownProtocols inject: OrderedCollection new into: [ :acc :each | acc, (self methodsInProtocol: each) ]) sorted: [ :a :b | a selector <= b selector ] ! ownProtocols "Answer the protocols of the receiver that are not package extensions" ^ self protocols reject: [ :each | each match: '^\*' ] ! protocols ^ self organization elements sorted ! prototype ! selectors ^ self methodDictionary keys ! subclasses self subclassResponsibility ! superclass ! theMetaClass ^ self class ! theNonMetaClass ^ self ! withAllSubclasses ^(Array with: self) addAll: self allSubclasses; yourself ! ! !Behavior methodsFor: 'compiling'! addCompiledMethod: aMethod | oldMethod announcement | oldMethod := self methodDictionary at: aMethod selector ifAbsent: [ nil ]. (self protocols includes: aMethod protocol) ifFalse: [ self organization addElement: aMethod protocol ]. self basicAddCompiledMethod: aMethod. announcement := oldMethod ifNil: [ MethodAdded new method: aMethod; yourself ] ifNotNil: [ MethodModified new oldMethod: oldMethod; method: aMethod; yourself ]. SystemAnnouncer current announce: announcement ! compile: aString ^ self compile: aString category: '' ! compile: aString category: anotherString ^ Compiler new install: aString forClass: self category: anotherString ! recompile ^ Compiler new recompile: self ! removeCompiledMethod: aMethod self basicRemoveCompiledMethod: aMethod. self methods detect: [ :each | each protocol = aMethod protocol ] ifNone: [ self organization removeElement: aMethod protocol ]. SystemAnnouncer current announce: (MethodRemoved new method: aMethod; yourself) ! ! !Behavior methodsFor: 'enumerating'! allSubclassesDo: aBlock "Evaluate the argument, aBlock, for each of the receiver's subclasses." self allSubclasses do: [ :each | aBlock value: each ] ! protocolsDo: aBlock "Execute aBlock for each method category with its collection of methods in the sort order of category name." | methodsByCategory | methodsByCategory := HashedCollection new. self methodDictionary values do: [:m | (methodsByCategory at: m category ifAbsentPut: [Array new]) add: m]. self protocols do: [:category | aBlock value: category value: (methodsByCategory at: category)] ! ! !Behavior methodsFor: 'instance creation'! basicNew ! new ^self basicNew initialize ! ! !Behavior methodsFor: 'private'! basicAddCompiledMethod: aMethod ! basicRemoveCompiledMethod: aMethod ! ! !Behavior methodsFor: 'testing'! canUnderstand: aSelector ^(self methodDictionary keys includes: aSelector asString) or: [ self superclass notNil and: [self superclass canUnderstand: aSelector]] ! includesBehavior: aClass ^ self == aClass or: [ self inheritsFrom: aClass ] ! includesSelector: aString ^ self methodDictionary includesKey: aString ! inheritsFrom: aClass self superclass ifNil: [ ^ false ]. ^ aClass == self superclass or: [ self superclass inheritsFrom: aClass ] ! isBehavior ^ true ! ! Behavior subclass: #Class instanceVariableNames: '' package: 'Kernel-Classes'! !Class commentStamp! I am __the__ class object. My instances are the classes of the system. Class creation is done throught a `ClassBuilder` instance.! !Class methodsFor: 'accessing'! category ^self package ifNil: ['Unclassified'] ifNotNil: [self package name] ! definition ^ String streamContents: [ :stream | stream nextPutAll: self superclass asString; nextPutAll: ' subclass: #'; nextPutAll: self name; nextPutAll: String lf, String tab; nextPutAll: 'instanceVariableNames: '''. self instanceVariableNames do: [ :each | stream nextPutAll: each ] separatedBy: [ stream nextPutAll: ' ' ]. stream nextPutAll: '''', String lf, String tab; nextPutAll: 'package: '''; nextPutAll: self category; nextPutAll: '''' ] ! package ^ self basicAt: 'pkg' ! package: aPackage | oldPackage | self package = aPackage ifTrue: [ ^ self ]. oldPackage := self package. self basicAt: 'pkg' put: aPackage. oldPackage organization removeElement: self. aPackage organization addElement: self. SystemAnnouncer current announce: (ClassMoved new theClass: self; oldPackage: oldPackage; yourself) ! rename: aString ClassBuilder new renameClass: self to: aString ! subclasses ! ! !Class methodsFor: 'class creation'! subclass: aString instanceVariableNames: anotherString "Kept for compatibility." ^self subclass: aString instanceVariableNames: anotherString package: nil ! subclass: aString instanceVariableNames: aString2 category: aString3 "Kept for compatibility." self deprecatedAPI. ^self subclass: aString instanceVariableNames: aString2 package: aString3 ! subclass: aString instanceVariableNames: aString2 classVariableNames: classVars poolDictionaries: pools category: aString3 "Just ignore class variables and pools. Added for compatibility." ^self subclass: aString instanceVariableNames: aString2 package: aString3 ! subclass: aString instanceVariableNames: aString2 package: aString3 ^ClassBuilder new superclass: self subclass: aString asString instanceVariableNames: aString2 package: aString3 ! ! !Class methodsFor: 'converting'! asJavascript ^ 'smalltalk.', self name ! ! !Class methodsFor: 'printing'! printOn: aStream aStream nextPutAll: self name ! ! !Class methodsFor: 'testing'! isClass ^true ! ! Behavior subclass: #Metaclass instanceVariableNames: '' package: 'Kernel-Classes'! !Metaclass commentStamp! I am the root of the class hierarchy. My instances are metaclasses, one for each real class, and have a single instance, which they hold onto: the class that they are the metaclass of.! !Metaclass methodsFor: 'accessing'! definition ^ String streamContents: [ :stream | stream nextPutAll: self asString; nextPutAll: ' instanceVariableNames: '''. self instanceVariableNames do: [ :each | stream nextPutAll: each ] separatedBy: [ stream nextPutAll: ' ' ]. stream nextPutAll: '''' ] ! instanceClass ! instanceVariableNames: aCollection ClassBuilder new class: self instanceVariableNames: aCollection ! subclasses ^ (self instanceClass subclasses select: [ :each | each isMetaclass not ]) collect: [ :each | each theMetaClass ] ! theMetaClass ^ self ! theNonMetaClass ^ self instanceClass ! ! !Metaclass methodsFor: 'converting'! asJavascript ^ 'smalltalk.', self instanceClass name, '.klass' ! ! !Metaclass methodsFor: 'printing'! printOn: aStream aStream nextPutAll: self instanceClass name; nextPutAll: ' class' ! ! !Metaclass methodsFor: 'testing'! isMetaclass ^true ! ! Object subclass: #ClassBuilder instanceVariableNames: '' package: 'Kernel-Classes'! !ClassBuilder commentStamp! I am responsible for compiling new classes or modifying existing classes in the system. Rather than using me directly to compile a class, use `Class >> subclass:instanceVariableNames:package:`.! !ClassBuilder methodsFor: 'accessing'! instanceVariableNamesFor: aString ^(aString tokenize: ' ') reject: [ :each | each isEmpty ] ! ! !ClassBuilder methodsFor: 'class definition'! addSubclassOf: aClass named: className instanceVariableNames: aCollection package: packageName | theClass thePackage | theClass := Smalltalk current at: className. thePackage := self createPackageNamed: packageName. theClass ifNotNil: [ theClass package: thePackage. theClass superclass == aClass ifFalse: [ ^ self migrateClassNamed: className superclass: aClass instanceVariableNames: aCollection package: packageName ] ]. ^ self basicAddSubclassOf: aClass named: className instanceVariableNames: aCollection package: packageName ! class: aClass instanceVariableNames: ivarNames self basicClass: aClass instanceVariableNames: ivarNames. self setupClass: aClass. SystemAnnouncer current announce: (ClassDefinitionChanged new theClass: aClass; yourself) ! superclass: aClass subclass: className ^self superclass: aClass subclass: className instanceVariableNames: '' package: nil ! superclass: aClass subclass: className instanceVariableNames: ivarNames package: packageName | newClass | newClass := self addSubclassOf: aClass named: className instanceVariableNames: (self instanceVariableNamesFor: ivarNames) package: (packageName ifNil: ['unclassified']). self setupClass: newClass. SystemAnnouncer current announce: (ClassAdded new theClass: newClass; yourself). ^newClass ! ! !ClassBuilder methodsFor: 'class migration'! migrateClass: aClass superclass: anotherClass ^ self migrateClassNamed: aClass name superclass: anotherClass instanceVariableNames: aClass instanceVariableNames package: aClass package name ! migrateClassNamed: className superclass: aClass instanceVariableNames: aCollection package: packageName | oldClass newClass tmp | tmp := 'new*', className. oldClass := Smalltalk current at: className. newClass := self addSubclassOf: aClass named: tmp instanceVariableNames: aCollection package: packageName. self basicSwapClassNames: oldClass with: newClass. [ self copyClass: oldClass to: newClass ] on: Error do: [ :exception | self basicSwapClassNames: oldClass with: newClass; basicRemoveClass: newClass. exception signal ]. self rawRenameClass: oldClass to: tmp; rawRenameClass: newClass to: className. oldClass subclasses do: [ :each | self migrateClass: each superclass: newClass ] displayingProgress: 'Recompiling ', newClass name, '...'. self basicRemoveClass: oldClass. SystemAnnouncer current announce: (ClassMigrated new theClass: newClass; oldClass: oldClass; yourself). ^newClass ! renameClass: aClass to: className self basicRenameClass: aClass to: className. "Recompile the class to fix potential issues with super sends" aClass recompile. SystemAnnouncer current announce: (ClassRenamed new theClass: aClass; yourself) ! ! !ClassBuilder methodsFor: 'copying'! copyClass: aClass named: className | newClass | newClass := self addSubclassOf: aClass superclass named: className instanceVariableNames: aClass instanceVariableNames package: aClass package name. self copyClass: aClass to: newClass. SystemAnnouncer current announce: (ClassAdded new theClass: newClass; yourself). ^newClass ! copyClass: aClass to: anotherClass anotherClass comment: aClass comment. aClass methodDictionary values do: [ :each | Compiler new install: each source forClass: anotherClass category: each category ]. self basicClass: anotherClass class instanceVariables: aClass class instanceVariableNames. aClass class methodDictionary values do: [ :each | Compiler new install: each source forClass: anotherClass class category: each category ]. self setupClass: anotherClass ! ! !ClassBuilder methodsFor: 'method definition'! installMethod: aCompiledMethod forClass: aBehavior category: aString aCompiledMethod category: aString. aBehavior addCompiledMethod: aCompiledMethod. self setupClass: aBehavior. ^aCompiledMethod ! ! !ClassBuilder methodsFor: 'private'! basicAddSubclassOf: aClass named: aString instanceVariableNames: aCollection package: packageName < smalltalk.addClass(aString, aClass, aCollection, packageName); return smalltalk[aString] > ! basicClass: aClass instanceVariableNames: aString self basicClass: aClass instanceVariables: (self instanceVariableNamesFor: aString) ! basicClass: aClass instanceVariables: aCollection aClass isMetaclass ifFalse: [self error: aClass name, ' is not a metaclass']. aClass basicAt: 'iVarNames' put: aCollection ! basicRemoveClass: aClass ! basicRenameClass: aClass to: aString < smalltalk[aString] = aClass; delete smalltalk[aClass.className]; aClass.className = aString; > ! basicSwapClassNames: aClass with: anotherClass < var tmp = aClass.className; aClass.className = anotherClass.className; anotherClass.className = tmp; > ! createPackageNamed: aString ^ Package named: aString ifAbsent: [ Smalltalk current createPackage: aString ] ! rawRenameClass: aClass to: aString < smalltalk[aString] = aClass; > ! ! !ClassBuilder methodsFor: 'public'! setupClass: aClass ! ! Object subclass: #ClassCategoryReader instanceVariableNames: 'class category' package: 'Kernel-Classes'! !ClassCategoryReader commentStamp! I provide a mechanism for retrieving class descriptions stored on a file in the Smalltalk chunk format.! !ClassCategoryReader methodsFor: 'accessing'! class: aClass category: aString class := aClass. category := aString ! ! !ClassCategoryReader methodsFor: 'fileIn'! scanFrom: aChunkParser | chunk | [chunk := aChunkParser nextChunk. chunk isEmpty] whileFalse: [ self compileMethod: chunk]. ClassBuilder new setupClass: class ! ! !ClassCategoryReader methodsFor: 'initialization'! initialize super initialize. ! ! !ClassCategoryReader methodsFor: 'private'! compileMethod: aString Compiler new install: aString forClass: class category: category ! ! Object subclass: #ClassCommentReader instanceVariableNames: 'class' package: 'Kernel-Classes'! !ClassCommentReader commentStamp! I provide a mechanism for retrieving class comments stored on a file. See also `ClassCategoryReader`.! !ClassCommentReader methodsFor: 'accessing'! class: aClass class := aClass ! ! !ClassCommentReader methodsFor: 'fileIn'! scanFrom: aChunkParser | chunk | chunk := aChunkParser nextChunk. chunk isEmpty ifFalse: [ self setComment: chunk]. ! ! !ClassCommentReader methodsFor: 'initialization'! initialize super initialize. ! ! !ClassCommentReader methodsFor: 'private'! setComment: aString class comment: aString ! ! Object subclass: #ClassSorterNode instanceVariableNames: 'theClass level nodes' package: 'Kernel-Classes'! !ClassSorterNode commentStamp! I provide an algorithm for sorting classes alphabetically. See [Issue #143](https://github.com/amber-smalltalk/amber/issues/143) on GitHub.! !ClassSorterNode methodsFor: 'accessing'! getNodesFrom: aCollection | children others | children := #(). others := #(). aCollection do: [:each | (each superclass = self theClass) ifTrue: [children add: each] ifFalse: [others add: each]]. nodes:= children collect: [:each | ClassSorterNode on: each classes: others level: self level + 1] ! level ^level ! level: anInteger level := anInteger ! nodes ^nodes ! theClass ^theClass ! theClass: aClass theClass := aClass ! ! !ClassSorterNode methodsFor: 'visiting'! traverseClassesWith: aCollection "sort classes alphabetically Issue #143" aCollection add: self theClass. (self nodes sorted: [:a :b | a theClass name <= b theClass name ]) do: [:aNode | aNode traverseClassesWith: aCollection ]. ! ! !ClassSorterNode class methodsFor: 'instance creation'! on: aClass classes: aCollection level: anInteger ^self new theClass: aClass; level: anInteger; getNodesFrom: aCollection; yourself ! !