Smalltalk current createPackage: 'Importer-Exporter'! Object subclass: #ChunkParser instanceVariableNames: 'stream' package: 'Importer-Exporter'! !ChunkParser commentStamp! I am responsible for parsing aStream contents in the chunk format. ## API ChunkParser new stream: aStream; nextChunk! !ChunkParser methodsFor: 'accessing'! stream: aStream stream := aStream ! ! !ChunkParser methodsFor: 'reading'! nextChunk "The chunk format (Smalltalk Interchange Format or Fileout format) is a trivial format but can be a bit tricky to understand: - Uses the exclamation mark as delimiter of chunks. - Inside a chunk a normal exclamation mark must be doubled. - A non empty chunk must be a valid Smalltalk expression. - A chunk on top level with a preceding empty chunk is an instruction chunk: - The object created by the expression then takes over reading chunks. This metod returns next chunk as a String (trimmed), empty String (all whitespace) or nil." | char result chunk | result := '' writeStream. [char := stream next. char notNil] whileTrue: [ char = '!!' ifTrue: [ stream peek = '!!' ifTrue: [stream next "skipping the escape double"] ifFalse: [^result contents trimBoth "chunk end marker found"]]. result nextPut: char]. ^nil "a chunk needs to end with !!" ! ! !ChunkParser class methodsFor: 'not yet classified'! on: aStream ^self new stream: aStream ! ! Object subclass: #Exporter instanceVariableNames: '' package: 'Importer-Exporter'! !Exporter commentStamp! I am responsible for outputting Amber code into a JavaScript string. The generated output is enough to reconstruct the exported data, including Smalltalk source code and other metadata. ## Use case I am typically used to save code outside of the Amber runtime (committing to disk, etc.). ## API Use `#exportAll`, `#exportClass:` or `#exportPackage:` methods.! !Exporter methodsFor: 'fileOut'! exportAll "Export all packages in the system." ^String streamContents: [:stream | Smalltalk current packages do: [:pkg | stream nextPutAll: (self exportPackage: pkg name)]] ! exportClass: aClass "Export a single class. Subclasses override these methods." ^String streamContents: [:stream | self exportDefinitionOf: aClass on: stream. self exportMethodsOf: aClass on: stream. self exportMetaDefinitionOf: aClass on: stream. self exportMethodsOf: aClass class on: stream] ! exportPackage: packageName "Export a given package by name." | package | ^String streamContents: [:stream | self exportPackagePrologueOn: stream. [ package := Smalltalk current packageAt: packageName. self exportPackageDefinitionOf: package on: stream. "Export classes in dependency order. Update (issue #171): Remove duplicates for export" package sortedClasses asSet do: [:each | stream nextPutAll: (self exportClass: each)]. self exportPackageExtensionsOf: package on: stream ] ensure: [ self exportPackageEpilogueOn: stream ]] ! ! !Exporter methodsFor: 'private'! classNameFor: aClass ^aClass isMetaclass ifTrue: [aClass instanceClass name, '.klass'] ifFalse: [ aClass isNil ifTrue: ['nil'] ifFalse: [aClass name]] ! exportDefinitionOf: aClass on: aStream aStream nextPutAll: 'smalltalk.addClass('; nextPutAll: '''', (self classNameFor: aClass), ''', '; nextPutAll: 'smalltalk.', (self classNameFor: aClass superclass); nextPutAll: ', ['. aClass instanceVariableNames do: [:each | aStream nextPutAll: '''', each, ''''] separatedBy: [aStream nextPutAll: ', ']. aStream nextPutAll: '], '''; nextPutAll: aClass category, ''''; nextPutAll: ');'. aClass comment notEmpty ifTrue: [ aStream lf; nextPutAll: 'smalltalk.'; nextPutAll: (self classNameFor: aClass); nextPutAll: '.comment='; nextPutAll: aClass comment asJavascript; nextPutAll: ';']. aStream lf ! exportMetaDefinitionOf: aClass on: aStream aClass class instanceVariableNames isEmpty ifFalse: [ aStream nextPutAll: 'smalltalk.', (self classNameFor: aClass class); nextPutAll: '.iVarNames = ['. aClass class instanceVariableNames do: [:each | aStream nextPutAll: '''', each, ''''] separatedBy: [aStream nextPutAll: ',']. aStream nextPutAll: '];', String lf] ! exportMethod: aMethod of: aClass on: aStream aStream nextPutAll: 'smalltalk.addMethod(';lf; "nextPutAll: aMethod selector asSelector asJavascript, ',';lf;" nextPutAll: 'smalltalk.method({';lf; nextPutAll: 'selector: ', aMethod selector asJavascript, ',';lf; nextPutAll: 'category: ''', aMethod category, ''',';lf; nextPutAll: 'fn: ', aMethod fn compiledSource, ',';lf; nextPutAll: 'args: ', aMethod arguments asJavascript, ','; lf; nextPutAll: 'source: ', aMethod source asJavascript, ',';lf; nextPutAll: 'messageSends: ', aMethod messageSends asJavascript, ',';lf; nextPutAll: 'referencedClasses: ', aMethod referencedClasses asJavascript. aStream lf; nextPutAll: '}),';lf; nextPutAll: 'smalltalk.', (self classNameFor: aClass); nextPutAll: ');';lf;lf ! exportMethodsOf: aClass on: aStream "Issue #143: sort methods alphabetically" ((aClass methodDictionary values) sorted: [:a :b | a selector <= b selector]) do: [:each | (each category match: '^\*') ifFalse: [ self exportMethod: each of: aClass on: aStream]]. aStream lf ! exportPackageDefinitionOf: package on: aStream aStream nextPutAll: 'smalltalk.addPackage('; nextPutAll: '''', package name, ''');'; lf ! exportPackageEpilogueOn: aStream aStream nextPutAll: '})(global_smalltalk,global_nil,global__st);'; lf ! exportPackageExtensionsOf: package on: aStream "Issue #143: sort classes and methods alphabetically" | name | name := package name. (Package sortedClasses: Smalltalk current classes) do: [:each | {each. each class} do: [:aClass | ((aClass methodDictionary values) sorted: [:a :b | a selector <= b selector]) do: [:method | (method category match: '^\*', name) ifTrue: [ self exportMethod: method of: aClass on: aStream ]]]] ! exportPackagePrologueOn: aStream aStream nextPutAll: '(function(smalltalk,nil,_st){'; lf ! ! Exporter subclass: #ChunkExporter instanceVariableNames: '' package: 'Importer-Exporter'! !ChunkExporter commentStamp! I am an exporter dedicated to outputting Amber source code in the classic Smalltalk chunk format. I do not output any compiled code.! !ChunkExporter methodsFor: 'private'! chunkEscape: aString "Replace all occurrences of !! with !!!! and trim at both ends." ^(aString replace: '!!' with: '!!!!') trimBoth ! classNameFor: aClass ^aClass isMetaclass ifTrue: [aClass instanceClass name, ' class'] ifFalse: [ aClass isNil ifTrue: ['nil'] ifFalse: [aClass name]] ! exportDefinitionOf: aClass on: aStream "Chunk format." aStream nextPutAll: (self classNameFor: aClass superclass); nextPutAll: ' subclass: #', (self classNameFor: aClass); lf; tab; nextPutAll: 'instanceVariableNames: '''. aClass instanceVariableNames do: [:each | aStream nextPutAll: each] separatedBy: [aStream nextPutAll: ' ']. aStream nextPutAll: ''''; lf; tab; nextPutAll: 'package: ''', aClass category, '''!!'; lf. aClass comment notEmpty ifTrue: [ aStream nextPutAll: '!!', (self classNameFor: aClass), ' commentStamp!!';lf; nextPutAll: (self chunkEscape: aClass comment), '!!';lf]. aStream lf ! exportMetaDefinitionOf: aClass on: aStream aClass class instanceVariableNames isEmpty ifFalse: [ aStream nextPutAll: (self classNameFor: aClass class); nextPutAll: ' instanceVariableNames: '''. aClass class instanceVariableNames do: [:each | aStream nextPutAll: each] separatedBy: [aStream nextPutAll: ' ']. aStream nextPutAll: '''!!'; lf; lf] ! exportMethod: aMethod of: aClass on: aStream aStream lf; lf; nextPutAll: (self chunkEscape: aMethod source); lf; nextPutAll: '!!' ! exportMethods: methods category: category of: aClass on: aStream "Issue #143: sort methods alphabetically" aStream nextPutAll: '!!', (self classNameFor: aClass); nextPutAll: ' methodsFor: ''', category, '''!!'. (methods sorted: [:a :b | a selector <= b selector]) do: [:each | self exportMethod: each of: aClass on: aStream]. aStream nextPutAll: ' !!'; lf; lf ! exportMethodsOf: aClass on: aStream "Issue #143: sort protocol alphabetically" | map | map := Dictionary new. aClass protocolsDo: [:category :methods | (category match: '^\*') ifFalse: [ map at: category put: methods ]]. (map keys sorted: [:a :b | a <= b ]) do: [:category | | methods | methods := map at: category. self exportMethods: methods category: category of: aClass on: aStream ] ! exportPackageDefinitionOf: package on: aStream "Chunk format." aStream nextPutAll: 'Smalltalk current createPackage: ''', package name, '''!!'; lf ! exportPackageEpilogueOn: aStream ! exportPackageExtensionsOf: package on: aStream "We need to override this one too since we need to group all methods in a given protocol under a leading methodsFor: chunk for that class." "Issue #143: sort protocol alphabetically" | name map | name := package name. (Package sortedClasses: Smalltalk current classes) do: [:each | {each. each class} do: [:aClass | map := Dictionary new. aClass protocolsDo: [:category :methods | (category match: '^\*', name) ifTrue: [ map at: category put: methods ]]. (map keys sorted: [:a :b | a <= b ]) do: [:category | | methods | methods := map at: category. self exportMethods: methods category: category of: aClass on: aStream ]]] ! exportPackagePrologueOn: aStream ! ! Exporter subclass: #StrippedExporter instanceVariableNames: '' package: 'Importer-Exporter'! !StrippedExporter commentStamp! I export Amber code into a JavaScript string, but without any optional associated data like the Amber source code.! !StrippedExporter methodsFor: 'private'! exportDefinitionOf: aClass on: aStream aStream nextPutAll: 'smalltalk.addClass('; nextPutAll: '''', (self classNameFor: aClass), ''', '; nextPutAll: 'smalltalk.', (self classNameFor: aClass superclass); nextPutAll: ', ['. aClass instanceVariableNames do: [:each | aStream nextPutAll: '''', each, ''''] separatedBy: [aStream nextPutAll: ', ']. aStream nextPutAll: '], '''; nextPutAll: aClass category, ''''; nextPutAll: ');'. aStream lf ! exportMethod: aMethod of: aClass on: aStream aStream nextPutAll: 'smalltalk.addMethod(';lf; "nextPutAll: aMethod selector asSelector asJavascript, ',';lf;" nextPutAll: 'smalltalk.method({';lf; nextPutAll: 'selector: ', aMethod selector asJavascript, ',';lf; nextPutAll: 'fn: ', aMethod fn compiledSource, ',';lf; nextPutAll: 'messageSends: ', aMethod messageSends asJavascript; nextPutAll: '}),';lf; nextPutAll: 'smalltalk.', (self classNameFor: aClass); nextPutAll: ');';lf;lf ! ! Object subclass: #Importer instanceVariableNames: '' package: 'Importer-Exporter'! !Importer commentStamp! I can import Amber code from a string in the chunk format. ## API Importer new import: aString! !Importer methodsFor: 'fileIn'! import: aStream | chunk result parser lastEmpty | parser := ChunkParser on: aStream. lastEmpty := false. [chunk := parser nextChunk. chunk isNil] whileFalse: [ chunk isEmpty ifTrue: [lastEmpty := true] ifFalse: [ result := Compiler new evaluateExpression: chunk. lastEmpty ifTrue: [ lastEmpty := false. result scanFrom: parser]]] ! ! InterfacingObject subclass: #PackageHandler instanceVariableNames: '' package: 'Importer-Exporter'! !PackageHandler commentStamp! I am responsible for handling package loading and committing. I should not be used directly. Instead, use the corresponding `Package` methods.! !PackageHandler methodsFor: 'committing'! commit: aPackage self commitChannels do: [ :commitStrategyFactory || fileContents commitStrategy | commitStrategy := commitStrategyFactory value: aPackage. fileContents := (commitStrategy key exportPackage: aPackage name). self ajaxPutAt: commitStrategy value data: fileContents ] displayingProgress: 'Committing package ', aPackage name ! ! !PackageHandler methodsFor: 'private'! ajaxPutAt: aURL data: aString self ajax: #{ 'url' -> aURL. 'type' -> 'PUT'. 'data' -> aString. 'contentType' -> 'text/plain;charset=UTF-8'. 'error' -> [ :xhr | self error: 'Commiting ' , aURL , ' failed with reason: "' , (xhr responseText) , '"'] } ! ! PackageHandler class instanceVariableNames: 'registry'! !PackageHandler class methodsFor: 'accessing'! classRegisteredFor: aString ^registry at: aString ! for: aString ^(self classRegisteredFor: aString) new ! ! !PackageHandler class methodsFor: 'initialization'! initialize super initialize. registry := #{} ! ! !PackageHandler class methodsFor: 'registry'! register: aClass for: aString registry at: aString put: aClass ! registerFor: aString PackageHandler register: self for: aString ! ! PackageHandler subclass: #LegacyPackageHandler instanceVariableNames: '' package: 'Importer-Exporter'! !LegacyPackageHandler commentStamp! I am responsible for handling package loading and committing. I should not be used directly. Instead, use the corresponding `Package` methods.! !LegacyPackageHandler methodsFor: 'committing'! commitChannels ^{ [ :pkg | Exporter new -> (pkg commitPathJs, '/', pkg name, '.js') ]. [ :pkg | StrippedExporter new -> (pkg commitPathJs, '/', pkg name, '.deploy.js') ]. [ :pkg | ChunkExporter new -> (pkg commitPathSt, '/', pkg name, '.st') ] } ! commitPathJsFor: aPackage ^self class defaultCommitPathJs ! commitPathStFor: aPackage ^self class defaultCommitPathSt ! ! !LegacyPackageHandler methodsFor: 'loading'! loadPackage: packageName prefix: aString | url | url := '/', aString, '/js/', packageName, '.js'. self ajax: #{ 'url' -> url. 'type' -> 'GET'. 'dataType' -> 'script'. 'complete' -> [ :jqXHR :textStatus | jqXHR readyState = 4 ifTrue: [ self setupPackageNamed: packageName prefix: aString ] ]. 'error' -> [ self alert: 'Could not load package at: ', url ] } ! loadPackages: aCollection prefix: aString aCollection do: [ :each | self loadPackage: each prefix: aString ] ! ! !LegacyPackageHandler methodsFor: 'private'! setupPackageNamed: packageName prefix: aString (Package named: packageName) setupClasses; commitPathJs: '/', aString, '/js'; commitPathSt: '/', aString, '/st' ! ! LegacyPackageHandler class instanceVariableNames: 'defaultCommitPathJs defaultCommitPathSt'! !LegacyPackageHandler class methodsFor: 'commit paths'! commitPathsFromLoader < var commitPath = typeof amber !!== 'undefined' && amber.commitPath; if (!!commitPath) return; if (commitPath.js) self._defaultCommitPathJs_(commitPath.js); if (commitPath.st) self._defaultCommitPathSt_(commitPath.st); > ! defaultCommitPathJs ^ defaultCommitPathJs ifNil: [ defaultCommitPathJs := 'js'] ! defaultCommitPathJs: aString defaultCommitPathJs := aString ! defaultCommitPathSt ^ defaultCommitPathSt ifNil: [ defaultCommitPathSt := 'st'] ! defaultCommitPathSt: aString defaultCommitPathSt := aString ! resetCommitPaths defaultCommitPathJs := nil. defaultCommitPathSt := nil ! ! !LegacyPackageHandler class methodsFor: 'initialization'! initialize super initialize. self registerFor: 'unknown'. self commitPathsFromLoader ! ! !LegacyPackageHandler class methodsFor: 'loading'! loadPackages: aCollection prefix: aString ^ self new loadPackages: aCollection prefix: aString ! ! !Package methodsFor: '*Importer-Exporter'! commit ^ self transport commit: self ! commitPathJs ^ (extension ifNil: [ extension := #{} ]) at: #commitPathJs ifAbsentPut: [self transport commitPathJsFor: self] ! commitPathJs: aString ^ (extension ifNil: [ extension := #{} ]) at: #commitPathJs put: aString ! commitPathSt ^ (extension ifNil: [ extension := #{} ]) at: #commitPathSt ifAbsentPut: [self transport commitPathStFor: self] ! commitPathSt: aString ^ (extension ifNil: [ extension := #{} ]) at: #commitPathSt put: aString ! loadDependencies "Returns list of packages that need to be present before loading this package. These are determined as set of packages covering all classes used either for subclassing or for defining extension methods on." "Fake one for now. TODO" | root | root := Object package. self == root ifTrue: [ ^#() ] ifFalse: [ ^{root} ] ! transport ^ PackageHandler for: self transportType ! transportType ! !