remove old Compiler.[st|js] files

st/Compiler.st

@@ -1,4378 +0,0 @@
-Smalltalk current createPackage: 'Compiler'!
-Object subclass: #ChunkParser
-	instanceVariableNames: 'stream'
-	package:'Compiler'!
-
-!ChunkParser methodsFor: '*Compiler'!
-
-stream: aStream
-	stream := aStream
-! !
-
-!ChunkParser methodsFor: '*Compiler'!
-
-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: '*Compiler'!
-
-on: aStream
-	^self new stream: aStream
-! !
-
-Object subclass: #Exporter
-	instanceVariableNames: ''
-	package:'Compiler'!
-
-!Exporter methodsFor: '*Compiler'!
-
-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 |
-                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]
-! !
-
-!Exporter methodsFor: '*Compiler'!
-
-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].
-	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
-!
-
-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 ]]]]
-! !
-
-Exporter subclass: #ChunkExporter
-	instanceVariableNames: ''
-	package:'Compiler'!
-
-!ChunkExporter methodsFor: '*Compiler'!
-
-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;
-        nextPutAll: '	instanceVariableNames: '''.
-    aClass instanceVariableNames 
-        do: [:each | aStream nextPutAll: each]
-        separatedBy: [aStream nextPutAll: ' '].
-    aStream 
-        nextPutAll: ''''; lf;
-        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
-!
-
-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 ]]]
-! !
-
-Exporter subclass: #StrippedExporter
-	instanceVariableNames: ''
-	package:'Compiler'!
-
-!StrippedExporter methodsFor: '*Compiler'!
-
-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:'Compiler'!
-
-!Importer methodsFor: '*Compiler'!
-
-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]]]
-! !
-
-Object subclass: #PackageLoader
-	instanceVariableNames: ''
-	package:'Compiler'!
-
-!PackageLoader methodsFor: '*Compiler'!
-
-initializePackageNamed: packageName prefix: aString
-
-	(Package named: packageName) 
-    	setupClasses;
-        commitPathJs: '/', aString, '/js';
-        commitPathSt: '/', aString, '/st'
-!
-
-loadPackage: packageName prefix: aString	
-	| url |
-    url := '/', aString, '/js/', packageName, '.js'.
-	jQuery 
-		ajax: url
-        options: #{
-			'type' -> 'GET'.
-			'dataType' -> 'script'.
-    		'complete' -> [ :jqXHR :textStatus | 
-				jqXHR readyState = 4 
-                	ifTrue: [ self initializePackageNamed: packageName prefix: aString ] ].
-			'error' -> [ window alert: 'Could not load package at:  ', url ]
-		}
-!
-
-loadPackages: aCollection prefix: aString
-	aCollection do: [ :each |
-    	self loadPackage: each prefix: aString ]
-! !
-
-!PackageLoader class methodsFor: '*Compiler'!
-
-loadPackages: aCollection prefix: aString
-	^ self new loadPackages: aCollection prefix: aString
-! !
-
-Error subclass: #CompilerError
-	instanceVariableNames: ''
-	package:'Compiler'!
-!CompilerError commentStamp!
-I am the common superclass of all compiling errors.!
-
-CompilerError subclass: #ParseError
-	instanceVariableNames: ''
-	package:'Compiler'!
-!ParseError commentStamp!
-Instance of ParseError are signaled on any parsing error. 
-See `Smalltalk >> #parse:`!
-
-CompilerError subclass: #SemanticError
-	instanceVariableNames: ''
-	package:'Compiler'!
-!SemanticError commentStamp!
-I represent an abstract semantic error thrown by the SemanticAnalyzer.
-Semantic errors can be unknown variable errors, etc.
-See my subclasses for concrete errors.
-
-The IDE should catch instances of Semantic error to deal with them when compiling!
-
-SemanticError subclass: #InliningError
-	instanceVariableNames: ''
-	package:'Compiler'!
-!InliningError commentStamp!
-Instances of InliningError are signaled when using an `InliningCodeGenerator`in a `Compiler`.!
-
-SemanticError subclass: #InvalidAssignmentError
-	instanceVariableNames: 'variableName'
-	package:'Compiler'!
-!InvalidAssignmentError commentStamp!
-I get signaled when a pseudo variable gets assigned.!
-
-!InvalidAssignmentError methodsFor: '*Compiler'!
-
-messageText
-	^ ' Invalid assignment to variable: ', self variableName
-!
-
-variableName
-	^ variableName
-!
-
-variableName: aString
-	variableName := aString
-! !
-
-SemanticError subclass: #ShadowingVariableError
-	instanceVariableNames: 'variableName'
-	package:'Compiler'!
-!ShadowingVariableError commentStamp!
-I get signaled when a variable in a block or method scope shadows a variable of the same name in an outer scope.!
-
-!ShadowingVariableError methodsFor: '*Compiler'!
-
-messageText
-	^ 'Variable shadowing error: ', self variableName, ' is already defined'
-!
-
-variableName
-	^ variableName
-!
-
-variableName: aString
-	variableName := aString
-! !
-
-SemanticError subclass: #UnknownVariableError
-	instanceVariableNames: 'variableName'
-	package:'Compiler'!
-!UnknownVariableError commentStamp!
-I get signaled when a variable is not defined.
-The default behavior is to allow it, as this is how Amber currently is able to seamlessly send messages to JavaScript objects.!
-
-!UnknownVariableError methodsFor: '*Compiler'!
-
-messageText
-	^ 'Unknown Variable error: ', self variableName, ' is not defined'
-!
-
-variableName
-	^ variableName
-!
-
-variableName: aString
-	variableName := aString
-! !
-
-ErrorHandler subclass: #RethrowErrorHandler
-	instanceVariableNames: ''
-	package:'Compiler'!
-!RethrowErrorHandler commentStamp!
-This class is used in the commandline version of the compiler.
-It uses the handleError: message of ErrorHandler for printing the stacktrace and throws the error again as JS exception.
-As a result Smalltalk errors are not swallowd by the Amber runtime and compilation can be aborted.!
-
-!RethrowErrorHandler methodsFor: '*Compiler'!
-
-basicSignal: anError
-	<throw anError>
-!
-
-handleError: anError
-	super handleError: anError.
-    self basicSignal: anError
-! !
-
-Object subclass: #Compiler
-	instanceVariableNames: 'currentClass source unknownVariables codeGeneratorClass'
-	package:'Compiler'!
-!Compiler commentStamp!
-I provide the public interface for compiling Amber source code into JavaScript.
-
-The code generator used to produce JavaScript can be plugged with `#codeGeneratorClass`. 
-The default code generator is an instance of `InlinedCodeGenerator`!
-
-!Compiler methodsFor: '*Compiler'!
-
-codeGeneratorClass
-	^codeGeneratorClass ifNil: [InliningCodeGenerator]
-!
-
-codeGeneratorClass: aClass
-	codeGeneratorClass := aClass
-!
-
-currentClass
-	^currentClass
-!
-
-currentClass: aClass
-	currentClass := aClass
-!
-
-source
-	^source ifNil: ['']
-!
-
-source: aString
-	source := aString
-!
-
-unknownVariables
-	^unknownVariables
-!
-
-unknownVariables: aCollection
-	unknownVariables := aCollection
-! !
-
-!Compiler methodsFor: '*Compiler'!
-
-compile: aString
-	^self compileNode: (self parse: aString)
-!
-
-compile: aString forClass: aClass
-	self currentClass: aClass.
-	self source: aString.
-	^self compile: aString
-!
-
-compileExpression: aString
-	self currentClass: DoIt.
-	self source: 'doIt ^[', aString, '] value'.
-	^self compileNode: (self parse: self source)
-!
-
-compileNode: aNode
-	| generator result |
-	generator := self codeGeneratorClass new.
-	generator
-		source: self source;
-		currentClass: self currentClass.
-	result := generator compileNode: aNode.
-	self unknownVariables: #().
-	^result
-!
-
-eval: aString
-	<return eval(aString)>
-!
-
-evaluateExpression: aString
-	"Unlike #eval: evaluate a Smalltalk expression and answer the returned object"
-	| result |
-	DoIt addCompiledMethod: (self eval: (self compileExpression: aString)).
-	result := DoIt new doIt.
-	DoIt removeCompiledMethod: (DoIt methodDictionary at: 'doIt').
-	^result
-!
-
-install: aString forClass: aBehavior category: anotherString
-   	^ ClassBuilder new
-    	installMethod: (self eval: (self compile: aString forClass: aBehavior))
-        forClass: aBehavior
-        category: anotherString
-!
-
-parse: aString
-    ^Smalltalk current parse: aString
-!
-
-parseExpression: aString
-    ^self parse: 'doIt ^[', aString, '] value'
-!
-
-recompile: aClass
-	aClass methodDictionary do: [:each |
-		console log: aClass name, ' >> ', each selector.
-		self install: each source forClass: aClass category: each category].
-	"self setupClass: aClass."
-	aClass isMetaclass ifFalse: [self recompile: aClass class]
-!
-
-recompileAll
-	Smalltalk current classes do: [:each |
-		Transcript show: each; cr.
-		[self recompile: each] valueWithTimeout: 100]
-! !
-
-!Compiler class methodsFor: '*Compiler'!
-
-recompile: aClass
-	self new recompile: aClass
-!
-
-recompileAll
-	Smalltalk current classes do: [:each |
-		self recompile: each]
-! !
-
-Object subclass: #DoIt
-	instanceVariableNames: ''
-	package:'Compiler'!
-!DoIt commentStamp!
-`DoIt` is the class used to compile and evaluate expressions. See `Compiler >> evaluateExpression:`.!
-
-Object subclass: #NodeVisitor
-	instanceVariableNames: ''
-	package:'Compiler'!
-!NodeVisitor commentStamp!
-I am the abstract super class of all AST node visitors.!
-
-!NodeVisitor methodsFor: '*Compiler'!
-
-visit: aNode
-	^ aNode accept: self
-!
-
-visitAll: aCollection
-	^ aCollection collect: [ :each | self visit: each ]
-!
-
-visitAssignmentNode: aNode
-	^ self visitNode: aNode
-!
-
-visitBlockNode: aNode
-	^ self visitNode: aNode
-!
-
-visitBlockSequenceNode: aNode
-	^ self visitSequenceNode: aNode
-!
-
-visitCascadeNode: aNode
-	^ self visitNode: aNode
-!
-
-visitClassReferenceNode: aNode
-	^ self visitVariableNode: aNode
-!
-
-visitDynamicArrayNode: aNode
-	^ self visitNode: aNode
-!
-
-visitDynamicDictionaryNode: aNode
-	^ self visitNode: aNode
-!
-
-visitJSStatementNode: aNode
-	^ self visitNode: aNode
-!
-
-visitMethodNode: aNode
-	^ self visitNode: aNode
-!
-
-visitNode: aNode
-	^ self visitAll: aNode nodes
-!
-
-visitReturnNode: aNode
-	^ self visitNode: aNode
-!
-
-visitSendNode: aNode
-	^ self visitNode: aNode
-!
-
-visitSequenceNode: aNode
-	^ self visitNode: aNode
-!
-
-visitValueNode: aNode
-	^ self visitNode: aNode
-!
-
-visitVariableNode: aNode
-	^ self visitNode: aNode
-! !
-
-NodeVisitor subclass: #AbstractCodeGenerator
-	instanceVariableNames: 'currentClass source'
-	package:'Compiler'!
-!AbstractCodeGenerator commentStamp!
-I am the abstract super class of all code generators and provide their common API.!
-
-!AbstractCodeGenerator methodsFor: '*Compiler'!
-
-classNameFor: aClass
-	^aClass isMetaclass
-	    ifTrue: [aClass instanceClass name, '.klass']
-	    ifFalse: [
-		aClass isNil
-		    ifTrue: ['nil']
-		    ifFalse: [aClass name]]
-!
-
-currentClass
-	^currentClass
-!
-
-currentClass: aClass
-	currentClass := aClass
-!
-
-pseudoVariables
-	^#('self' 'super' 'true' 'false' 'nil' 'thisContext')
-!
-
-safeVariableNameFor: aString
-	^(Smalltalk current reservedWords includes: aString)
-		ifTrue: [aString, '_']
-		ifFalse: [aString]
-!
-
-source
-	^source ifNil: ['']
-!
-
-source: aString
-	source := aString
-! !
-
-!AbstractCodeGenerator methodsFor: '*Compiler'!
-
-compileNode: aNode
-	self subclassResponsibility
-! !
-
-AbstractCodeGenerator subclass: #CodeGenerator
-	instanceVariableNames: ''
-	package:'Compiler'!
-!CodeGenerator commentStamp!
-I am a basic code generator. I generate a valid JavaScript output, but no not perform any inlining.
-See `InliningCodeGenerator` for an optimized JavaScript code generation.!
-
-!CodeGenerator methodsFor: '*Compiler'!
-
-compileNode: aNode
-	| ir stream |
-	self semanticAnalyzer visit: aNode.
-	ir := self translator visit: aNode.
-	^ self irTranslator
-		visit: ir;
-		contents
-!
-
-irTranslator
-	^ IRJSTranslator new
-!
-
-semanticAnalyzer
-	^ SemanticAnalyzer on: self currentClass
-!
-
-translator
-	^ IRASTTranslator new
-		source: self source;
-		theClass: self currentClass;
-		yourself
-! !
-
-Object subclass: #Node
-	instanceVariableNames: 'position nodes shouldBeInlined shouldBeAliased'
-	package:'Compiler'!
-!Node commentStamp!
-I am the abstract root class of the abstract syntax tree.
-
-position: holds a point containing lline- and column number of the symbol location in the original source file!
-
-!Node methodsFor: '*Compiler'!
-
-addNode: aNode
-	self nodes add: aNode
-!
-
-nodes
-	^nodes ifNil: [nodes := Array new]
-!
-
-position
-	^position ifNil: [position := 0@0]
-!
-
-shouldBeAliased
-	^ shouldBeAliased ifNil: [ false ]
-!
-
-shouldBeAliased: aBoolean
-	shouldBeAliased := aBoolean
-!
-
-shouldBeInlined
-	^ shouldBeInlined ifNil: [ false ]
-!
-
-shouldBeInlined: aBoolean
-	shouldBeInlined := aBoolean
-! !
-
-!Node methodsFor: '*Compiler'!
-
-nodes: aCollection
-	nodes := aCollection
-!
-
-position: aPosition
-	position := aPosition
-! !
-
-!Node methodsFor: '*Compiler'!
-
-isAssignmentNode
-	^ false
-!
-
-isBlockNode
-	^false
-!
-
-isBlockSequenceNode
-	^false
-!
-
-isImmutable
-	^false
-!
-
-isNode
-	^ true
-!
-
-isReturnNode
-	^false
-!
-
-isSendNode
-	^false
-!
-
-isValueNode
-	^false
-!
-
-subtreeNeedsAliasing
-    ^(self shouldBeAliased or: [ self shouldBeInlined ]) or: [
-        (self nodes detect: [ :each | each subtreeNeedsAliasing ] ifNone: [ false ]) ~= false ]
-! !
-
-!Node methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitNode: self
-! !
-
-Node subclass: #AssignmentNode
-	instanceVariableNames: 'left right'
-	package:'Compiler'!
-
-!AssignmentNode methodsFor: '*Compiler'!
-
-left
-	^left
-!
-
-left: aNode
-	left := aNode
-!
-
-nodes
-	^ Array with: self left with: self right
-!
-
-right
-	^right
-!
-
-right: aNode
-	right := aNode
-! !
-
-!AssignmentNode methodsFor: '*Compiler'!
-
-isAssignmentNode
-	^ true
-! !
-
-!AssignmentNode methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitAssignmentNode: self
-! !
-
-Node subclass: #BlockNode
-	instanceVariableNames: 'parameters scope'
-	package:'Compiler'!
-
-!BlockNode methodsFor: '*Compiler'!
-
-parameters
-	^parameters ifNil: [parameters := Array new]
-!
-
-parameters: aCollection
-	parameters := aCollection
-!
-
-scope
-	^ scope
-!
-
-scope: aLexicalScope
-	scope := aLexicalScope
-! !
-
-!BlockNode methodsFor: '*Compiler'!
-
-isBlockNode
-	^true
-!
-
-subtreeNeedsAliasing
-    ^ self shouldBeAliased or: [ self shouldBeInlined ]
-! !
-
-!BlockNode methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitBlockNode: self
-! !
-
-Node subclass: #CascadeNode
-	instanceVariableNames: 'receiver'
-	package:'Compiler'!
-
-!CascadeNode methodsFor: '*Compiler'!
-
-receiver
-	^receiver
-!
-
-receiver: aNode
-	receiver := aNode
-! !
-
-!CascadeNode methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitCascadeNode: self
-! !
-
-Node subclass: #DynamicArrayNode
-	instanceVariableNames: ''
-	package:'Compiler'!
-
-!DynamicArrayNode methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitDynamicArrayNode: self
-! !
-
-Node subclass: #DynamicDictionaryNode
-	instanceVariableNames: ''
-	package:'Compiler'!
-
-!DynamicDictionaryNode methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitDynamicDictionaryNode: self
-! !
-
-Node subclass: #JSStatementNode
-	instanceVariableNames: 'source'
-	package:'Compiler'!
-
-!JSStatementNode methodsFor: '*Compiler'!
-
-source
-	^source ifNil: ['']
-!
-
-source: aString
-	source := aString
-! !
-
-!JSStatementNode methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitJSStatementNode: self
-! !
-
-Node subclass: #MethodNode
-	instanceVariableNames: 'selector arguments source scope classReferences messageSends superSends'
-	package:'Compiler'!
-
-!MethodNode methodsFor: '*Compiler'!
-
-arguments
-	^arguments ifNil: [#()]
-!
-
-arguments: aCollection
-	arguments := aCollection
-!
-
-classReferences
-	^ classReferences
-!
-
-classReferences: aCollection
-	classReferences := aCollection
-!
-
-messageSends
-	^ messageSends
-!
-
-messageSends: aCollection
-	messageSends := aCollection
-!
-
-scope
-	^ scope
-!
-
-scope: aMethodScope
-	scope := aMethodScope
-!
-
-selector
-	^selector
-!
-
-selector: aString
-	selector := aString
-!
-
-source
-	^source
-!
-
-source: aString
-	source := aString
-!
-
-superSends
-	^ superSends
-!
-
-superSends: aCollection
-	superSends := aCollection
-! !
-
-!MethodNode methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitMethodNode: self
-! !
-
-Node subclass: #ReturnNode
-	instanceVariableNames: 'scope'
-	package:'Compiler'!
-
-!ReturnNode methodsFor: '*Compiler'!
-
-scope
-	^ scope
-!
-
-scope: aLexicalScope
-	scope := aLexicalScope
-! !
-
-!ReturnNode methodsFor: '*Compiler'!
-
-isReturnNode
-	^ true
-!
-
-nonLocalReturn
-	^ self scope isMethodScope not
-! !
-
-!ReturnNode methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitReturnNode: self
-! !
-
-Node subclass: #SendNode
-	instanceVariableNames: 'selector arguments receiver superSend index'
-	package:'Compiler'!
-
-!SendNode methodsFor: '*Compiler'!
-
-arguments
-	^arguments ifNil: [arguments := #()]
-!
-
-arguments: aCollection
-	arguments := aCollection
-!
-
-cascadeNodeWithMessages: aCollection
-	| first |
-	first := SendNode new
-	    selector: self selector;
-	    arguments: self arguments;
-	    yourself.
-	^CascadeNode new
-	    receiver: self receiver;
-	    nodes: (Array with: first), aCollection;
-	    yourself
-!
-
-index
-	^ index
-!
-
-index: anInteger
-	index := anInteger
-!
-
-nodes
-	^ (Array withAll: self arguments)
-		add: self receiver;
-		yourself
-!
-
-receiver
-	^receiver
-!
-
-receiver: aNode
-	receiver := aNode
-!
-
-selector
-	^selector
-!
-
-selector: aString
-	selector := aString
-!
-
-superSend
-	^ superSend ifNil: [ false ]
-!
-
-superSend: aBoolean
-	superSend := aBoolean
-!
-
-valueForReceiver: anObject
-	^SendNode new
-	    receiver: (self receiver 
-		ifNil: [anObject]
-		ifNotNil: [self receiver valueForReceiver: anObject]);
-	    selector: self selector;
-	    arguments: self arguments;
-	    yourself
-! !
-
-!SendNode methodsFor: '*Compiler'!
-
-isSendNode
-	^ true
-! !
-
-!SendNode methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitSendNode: self
-! !
-
-Node subclass: #SequenceNode
-	instanceVariableNames: 'temps scope'
-	package:'Compiler'!
-
-!SequenceNode methodsFor: '*Compiler'!
-
-scope
-	^ scope
-!
-
-scope: aLexicalScope
-	scope := aLexicalScope
-!
-
-temps
-	^temps ifNil: [#()]
-!
-
-temps: aCollection
-	temps := aCollection
-! !
-
-!SequenceNode methodsFor: '*Compiler'!
-
-asBlockSequenceNode
-	^BlockSequenceNode new
-	    nodes: self nodes;
-	    temps: self temps;
-	    yourself
-! !
-
-!SequenceNode methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitSequenceNode: self
-! !
-
-SequenceNode subclass: #BlockSequenceNode
-	instanceVariableNames: ''
-	package:'Compiler'!
-
-!BlockSequenceNode methodsFor: '*Compiler'!
-
-isBlockSequenceNode
-	^true
-! !
-
-!BlockSequenceNode methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitBlockSequenceNode: self
-! !
-
-Node subclass: #ValueNode
-	instanceVariableNames: 'value'
-	package:'Compiler'!
-
-!ValueNode methodsFor: '*Compiler'!
-
-value
-	^value
-!
-
-value: anObject
-	value := anObject
-! !
-
-!ValueNode methodsFor: '*Compiler'!
-
-isImmutable
-	^true
-!
-
-isValueNode
-	^true
-! !
-
-!ValueNode methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitValueNode: self
-! !
-
-ValueNode subclass: #VariableNode
-	instanceVariableNames: 'assigned binding'
-	package:'Compiler'!
-
-!VariableNode methodsFor: '*Compiler'!
-
-alias
-	^ self binding alias
-!
-
-assigned
-	^assigned ifNil: [false]
-!
-
-assigned: aBoolean
-	assigned := aBoolean
-!
-
-beAssigned
-	self binding validateAssignment.
-	assigned := true
-!
-
-binding
-	^ binding
-!
-
-binding: aScopeVar
-	binding := aScopeVar
-! !
-
-!VariableNode methodsFor: '*Compiler'!
-
-isImmutable
-	^false
-! !
-
-!VariableNode methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitVariableNode: self
-! !
-
-VariableNode subclass: #ClassReferenceNode
-	instanceVariableNames: ''
-	package:'Compiler'!
-
-!ClassReferenceNode methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitClassReferenceNode: self
-! !
-
-!Object methodsFor: '*Compiler'!
-
-isNode
-	^ false
-! !
-
-Object subclass: #LexicalScope
-	instanceVariableNames: 'node instruction temps args outerScope'
-	package:'Compiler'!
-!LexicalScope commentStamp!
-I represent a lexical scope where variable names are associated with ScopeVars
-Instances are used for block scopes. Method scopes are instances of MethodLexicalScope.
-
-I am attached to a ScopeVar and method/block nodes.
-Each context (method/closure) get a fresh scope that inherits from its outer scope.!
-
-!LexicalScope methodsFor: '*Compiler'!
-
-alias
-	^ '$ctx', self scopeLevel asString
-!
-
-allVariableNames
-	^ self args keys, self temps keys
-!
-
-args
-	^ args ifNil: [ args := Dictionary new ]
-!
-
-bindingFor: aStringOrNode
-	^ self pseudoVars at: aStringOrNode value ifAbsent: [ 
-		self args at: aStringOrNode value ifAbsent: [
-			self temps at: aStringOrNode value ifAbsent: [ nil ]]]
-!
-
-instruction
-	^ instruction
-!
-
-instruction: anIRInstruction
-	instruction := anIRInstruction
-!
-
-lookupVariable: aNode
-	| lookup |
-	lookup := (self bindingFor: aNode).
-	lookup ifNil: [
-		lookup := self outerScope ifNotNil: [ 
-			(self outerScope lookupVariable: aNode) ]].
-	^ lookup
-!
-
-methodScope
-	^ self outerScope ifNotNil: [
-		self outerScope methodScope ]
-!
-
-node
-	"Answer the node in which I am defined"
-	
-	^ node
-!
-
-node: aNode
-	node := aNode
-!
-
-outerScope
-	^ outerScope
-!
-
-outerScope: aLexicalScope
-	outerScope := aLexicalScope
-!
-
-pseudoVars
-	^ self methodScope pseudoVars
-!
-
-scopeLevel
-	self outerScope ifNil: [ ^ 1 ].
-	self isInlined ifTrue: [ ^ self outerScope scopeLevel ].
-    
-	^ self outerScope scopeLevel + 1
-!
-
-temps
-	^ temps ifNil: [ temps := Dictionary new ]
-! !
-
-!LexicalScope methodsFor: '*Compiler'!
-
-addArg: aString
-	self args at: aString put: (ArgVar on: aString).
-	(self args at: aString) scope: self
-!
-
-addTemp: aString
-	self temps at: aString put: (TempVar on: aString).
-	(self temps at: aString) scope: self
-! !
-
-!LexicalScope methodsFor: '*Compiler'!
-
-canInlineNonLocalReturns
-	^ self isInlined and: [ self outerScope canInlineNonLocalReturns ]
-!
-
-isBlockScope
-	^ self isMethodScope not
-!
-
-isInlined
-	^ self instruction notNil and: [
-      	self instruction isInlined ]
-!
-
-isMethodScope
-	^ false
-! !
-
-LexicalScope subclass: #MethodLexicalScope
-	instanceVariableNames: 'iVars pseudoVars unknownVariables localReturn nonLocalReturns'
-	package:'Compiler'!
-!MethodLexicalScope commentStamp!
-I represent a method scope.!
-
-!MethodLexicalScope methodsFor: '*Compiler'!
-
-allVariableNames
-	^ super allVariableNames, self iVars keys
-!
-
-bindingFor: aNode
-	^ (super bindingFor: aNode) ifNil: [
-		self iVars at: aNode value ifAbsent: [ nil ]]
-!
-
-iVars
-	^ iVars ifNil: [ iVars := Dictionary new ]
-!
-
-localReturn
-	^ localReturn ifNil: [ false ]
-!
-
-localReturn: aBoolean
-	localReturn := aBoolean
-!
-
-methodScope
-	^ self
-!
-
-nonLocalReturns
-	^ nonLocalReturns ifNil: [ nonLocalReturns := OrderedCollection new ]
-!
-
-pseudoVars
-	pseudoVars ifNil: [
-		pseudoVars := Dictionary new.
-		Smalltalk current pseudoVariableNames do: [ :each |
-			pseudoVars at: each put: ((PseudoVar on: each)
-				scope: self methodScope;
-				yourself) ]].
-	^ pseudoVars
-!
-
-unknownVariables
-	^ unknownVariables ifNil: [ unknownVariables := OrderedCollection new ]
-! !
-
-!MethodLexicalScope methodsFor: '*Compiler'!
-
-addIVar: aString
-	self iVars at: aString put: (InstanceVar on: aString).
-	(self iVars at: aString) scope: self
-!
-
-addNonLocalReturn: aScope
-	self nonLocalReturns add: aScope
-!
-
-removeNonLocalReturn: aScope
-	self nonLocalReturns remove: aScope ifAbsent: []
-! !
-
-!MethodLexicalScope methodsFor: '*Compiler'!
-
-canInlineNonLocalReturns
-	^ true
-!
-
-hasLocalReturn
-	^ self localReturn
-!
-
-hasNonLocalReturn
-	^ self nonLocalReturns notEmpty
-!
-
-isMethodScope
-	^ true
-! !
-
-Object subclass: #ScopeVar
-	instanceVariableNames: 'scope name'
-	package:'Compiler'!
-!ScopeVar commentStamp!
-I am an entry in a LexicalScope that gets associated with variable nodes of the same name.  
-There are 4 different subclasses of vars: temp vars, local vars, args, and unknown/global vars.!
-
-!ScopeVar methodsFor: '*Compiler'!
-
-alias
-	^ self name asVariableName
-!
-
-name
-	^ name
-!
-
-name: aString
-	name := aString
-!
-
-scope
-	^ scope
-!
-
-scope: aScope
-	scope := aScope
-! !
-
-!ScopeVar methodsFor: '*Compiler'!
-
-isArgVar
-	^ false
-!
-
-isClassRefVar
-	^ false
-!
-
-isInstanceVar
-	^ false
-!
-
-isPseudoVar
-	^ false
-!
-
-isTempVar
-	^ false
-!
-
-isUnknownVar
-	^ false
-!
-
-validateAssignment
-	(self isArgVar or: [ self isPseudoVar ]) ifTrue: [
-		InvalidAssignmentError new
-			variableName: self name;
-			signal]
-! !
-
-!ScopeVar class methodsFor: '*Compiler'!
-
-on: aString
-	^ self new 
-		name: aString;
-		yourself
-! !
-
-ScopeVar subclass: #AliasVar
-	instanceVariableNames: 'node'
-	package:'Compiler'!
-!AliasVar commentStamp!
-I am an internally defined variable by the compiler!
-
-!AliasVar methodsFor: '*Compiler'!
-
-node
-	^ node
-!
-
-node: aNode
-	node := aNode
-! !
-
-ScopeVar subclass: #ArgVar
-	instanceVariableNames: ''
-	package:'Compiler'!
-!ArgVar commentStamp!
-I am an argument of a method or block.!
-
-!ArgVar methodsFor: '*Compiler'!
-
-isArgVar
-	^ true
-! !
-
-ScopeVar subclass: #ClassRefVar
-	instanceVariableNames: ''
-	package:'Compiler'!
-!ClassRefVar commentStamp!
-I am an class reference variable!
-
-!ClassRefVar methodsFor: '*Compiler'!
-
-alias
-	^ '(smalltalk.', self name, ' || ', self name, ')'
-! !
-
-!ClassRefVar methodsFor: '*Compiler'!
-
-isClassRefVar
-	^ true
-! !
-
-ScopeVar subclass: #InstanceVar
-	instanceVariableNames: ''
-	package:'Compiler'!
-!InstanceVar commentStamp!
-I am an instance variable of a method or block.!
-
-!InstanceVar methodsFor: '*Compiler'!
-
-alias
-	^ 'self["@', self name, '"]'
-!
-
-isInstanceVar
-	^ true
-! !
-
-ScopeVar subclass: #PseudoVar
-	instanceVariableNames: ''
-	package:'Compiler'!
-!PseudoVar commentStamp!
-I am an pseudo variable.
-
-The five Smalltalk pseudo variables are: 'self', 'super', 'nil', 'true' and 'false'!
-
-!PseudoVar methodsFor: '*Compiler'!
-
-alias
-	^ self name
-! !
-
-!PseudoVar methodsFor: '*Compiler'!
-
-isPseudoVar
-	^ true
-! !
-
-ScopeVar subclass: #TempVar
-	instanceVariableNames: ''
-	package:'Compiler'!
-!TempVar commentStamp!
-I am an temporary variable of a method or block.!
-
-!TempVar methodsFor: '*Compiler'!
-
-isTempVar
-	^ true
-! !
-
-ScopeVar subclass: #UnknownVar
-	instanceVariableNames: ''
-	package:'Compiler'!
-!UnknownVar commentStamp!
-I am an unknown variable. Amber uses unknown variables as JavaScript globals!
-
-!UnknownVar methodsFor: '*Compiler'!
-
-isUnknownVar
-	^ true
-! !
-
-NodeVisitor subclass: #SemanticAnalyzer
-	instanceVariableNames: 'currentScope theClass classReferences messageSends superSends'
-	package:'Compiler'!
-!SemanticAnalyzer commentStamp!
-I semantically analyze the abstract syntax tree and annotate it with informations such as non local returns and variable scopes.!
-
-!SemanticAnalyzer methodsFor: '*Compiler'!
-
-classReferences
-	^ classReferences ifNil: [ classReferences := Set new ]
-!
-
-messageSends
-	^ messageSends ifNil: [ messageSends := Dictionary new ]
-!
-
-superSends
-	^ superSends ifNil: [ superSends := Dictionary new ]
-!
-
-theClass
-	^ theClass
-!
-
-theClass: aClass
-	theClass := aClass
-! !
-
-!SemanticAnalyzer methodsFor: '*Compiler'!
-
-errorShadowingVariable: aString
-	ShadowingVariableError new
-		variableName: aString;
-		signal
-!
-
-errorUnknownVariable: aNode
-	"Throw an error if the variable is undeclared in the global JS scope (i.e. window).
-    We allow four variable names in addition: `jQuery`, `window`, `process` and `global` 
-    for nodejs and browser environments. 
-    
-    This is only to make sure compilation works on both browser-based and nodejs environments.
-    The ideal solution would be to use a pragma instead"
-
-	| identifier |
-    identifier := aNode value.
-    
-	((#('jQuery' 'window' 'document' 'process' 'global') includes: identifier) not 
-        and: [ self isVariableGloballyUndefined: identifier ]) 
-        	ifTrue: [
-				UnknownVariableError new
-					variableName: aNode value;
-					signal ]
-			ifFalse: [
-				currentScope methodScope unknownVariables add: aNode value ]
-! !
-
-!SemanticAnalyzer methodsFor: '*Compiler'!
-
-newBlockScope
-	^ self newScopeOfClass: LexicalScope
-!
-
-newMethodScope
-	^ self newScopeOfClass: MethodLexicalScope
-!
-
-newScopeOfClass: aLexicalScopeClass
-	^ aLexicalScopeClass new 
-		outerScope: currentScope;
-		yourself
-! !
-
-!SemanticAnalyzer methodsFor: '*Compiler'!
-
-popScope
-	currentScope ifNotNil: [
-		currentScope := currentScope outerScope ]
-!
-
-pushScope: aScope
-	aScope outerScope: currentScope.
-	currentScope := aScope
-!
-
-validateVariableScope: aString
-	"Validate the variable scope in by doing a recursive lookup, up to the method scope"
-
-	(currentScope lookupVariable: aString) ifNotNil: [
-		self errorShadowingVariable: aString ]
-! !
-
-!SemanticAnalyzer methodsFor: '*Compiler'!
-
-isVariableGloballyUndefined: aString
-	<return eval('typeof ' + aString + ' == "undefined"')>
-! !
-
-!SemanticAnalyzer methodsFor: '*Compiler'!
-
-visitAssignmentNode: aNode
-	super visitAssignmentNode: aNode.
-	aNode left beAssigned
-!
-
-visitBlockNode: aNode
-	self pushScope: self newBlockScope.
-	aNode scope: currentScope.
-	currentScope node: aNode.
-	
-	aNode parameters do: [ :each | 
-		self validateVariableScope: each.
-		currentScope addArg: each ].
-
-	super visitBlockNode: aNode.
-	self popScope
-!
-
-visitCascadeNode: aNode
-	"Populate the receiver into all children"
-	aNode nodes do: [ :each | 
-		each receiver: aNode receiver ].
-	super visitCascadeNode: aNode.
-	aNode nodes first superSend ifTrue: [
-		aNode nodes do: [ :each | each superSend: true ]]
-!
-
-visitClassReferenceNode: aNode
-	self classReferences add: aNode value.
-	aNode binding: (ClassRefVar new name: aNode value; yourself)
-!
-
-visitMethodNode: aNode
-	self pushScope: self newMethodScope.
-	aNode scope: currentScope.
-	currentScope node: aNode.
-
-	self theClass allInstanceVariableNames do: [:each | 
-		currentScope addIVar: each ].
-	aNode arguments do: [ :each | 
-		self validateVariableScope: each.
-		currentScope addArg: each ].
-
-	super visitMethodNode: aNode.
-
-	aNode 
-		classReferences: self classReferences;
-		messageSends: self messageSends keys;
-        superSends: self superSends keys.
-	self popScope
-!
-
-visitReturnNode: aNode
-	aNode scope: currentScope.
-	currentScope isMethodScope
-		ifTrue: [ currentScope localReturn: true ]
-		ifFalse: [ currentScope methodScope addNonLocalReturn: currentScope ].
-	super visitReturnNode: aNode
-!
-
-visitSendNode: aNode
-
-	aNode receiver value = 'super' 
-		ifTrue: [
-			aNode superSend: true.
-			aNode receiver value: 'self'.
-			self superSends at: aNode selector ifAbsentPut: [ Set new ].
-			(self superSends at: aNode selector) add: aNode ]
-          
-		ifFalse: [ (IRSendInliner inlinedSelectors includes: aNode selector) ifTrue: [
-			aNode shouldBeInlined: true.
-			aNode receiver shouldBeAliased: true ] ].
-
-	self messageSends at: aNode selector ifAbsentPut: [ Set new ].
-	(self messageSends at: aNode selector) add: aNode.
-
-	aNode index: (self messageSends at: aNode selector) size.
-
-	super visitSendNode: aNode
-!
-
-visitSequenceNode: aNode
-	aNode temps do: [ :each | 
-		self validateVariableScope: each.
-		currentScope addTemp: each ].
-
-	super visitSequenceNode: aNode
-!
-
-visitVariableNode: aNode
-	"Bind a ScopeVar to aNode by doing a lookup in the current scope.
-	If no ScopeVar is found, bind a UnknowVar and throw an error"
-
-	aNode binding: ((currentScope lookupVariable: aNode) ifNil: [ 
-		self errorUnknownVariable: aNode.
-		UnknownVar new name: aNode value; yourself ])
-! !
-
-!SemanticAnalyzer class methodsFor: '*Compiler'!
-
-on: aClass
-	^ self new
-		theClass: aClass;
-		yourself
-! !
-
-NodeVisitor subclass: #IRASTTranslator
-	instanceVariableNames: 'source theClass method sequence nextAlias'
-	package:'Compiler'!
-!IRASTTranslator commentStamp!
-I am the AST (abstract syntax tree) visitor responsible for building the intermediate representation graph.
-I rely on a builder object, instance of IRBuilder.!
-
-!IRASTTranslator methodsFor: '*Compiler'!
-
-method
-	^ method
-!
-
-method: anIRMethod
-	method := anIRMethod
-!
-
-nextAlias
-	nextAlias ifNil: [ nextAlias := 0 ].
-	nextAlias := nextAlias + 1.
-	^ nextAlias asString
-!
-
-sequence
-	^ sequence
-!
-
-sequence: anIRSequence
-	sequence := anIRSequence
-!
-
-source
-	^ source
-!
-
-source: aString
-	source := aString
-!
-
-theClass
-	^ theClass
-!
-
-theClass: aClass
-	theClass := aClass
-!
-
-withSequence: aSequence do: aBlock
-	| outerSequence |
-	outerSequence := self sequence.
-	self sequence: aSequence.
-	aBlock value.
-	self sequence: outerSequence.
-	^ aSequence
-! !
-
-!IRASTTranslator methodsFor: '*Compiler'!
-
-alias: aNode
-	| variable |
-
-	aNode isImmutable ifTrue: [ ^ self visit: aNode ].
-
-	variable := IRVariable new 
-		variable: (AliasVar new name: '$', self nextAlias); 
-		yourself.
-
-	self sequence add: (IRAssignment new
-		add: variable;
-		add: (self visit: aNode);
-		yourself).
-
-	self method internalVariables add: variable.
-
-	^ variable
-!
-
-aliasTemporally: aCollection
-	"https://github.com/NicolasPetton/amber/issues/296
-    
-    If a node is aliased, all preceding ones are aliased as well.
-    The tree is iterated twice. First we get the aliasing dependency, 
-    then the aliasing itself is done"
-
-	| threshold result |
-    threshold := 0.
-    
-    aCollection withIndexDo: [ :each :i |
-        each subtreeNeedsAliasing
-		    ifTrue: [ threshold := i ]].
-
-	result := OrderedCollection new.
-	aCollection withIndexDo: [ :each :i | 
-		result add: (i <= threshold
-			ifTrue: [ self alias: each ]
-			ifFalse: [ self visit: each ])].
-
-    ^result
-!
-
-visitAssignmentNode: aNode
-	| left right assignment |
-	right := self visit: aNode right.
-	left := self visit: aNode left.
-	self sequence add: (IRAssignment new 
-		add: left;
-		add: right;
-		yourself).
-	^ left
-!
-
-visitBlockNode: aNode
-	| closure |
-	closure := IRClosure new
-		arguments: aNode parameters;
-		scope: aNode scope;
-		yourself.
-	aNode scope temps do: [ :each |
-		closure add: (IRTempDeclaration new 
-			name: each name;
-            scope: aNode scope;
-			yourself) ].
-	aNode nodes do: [ :each | closure add: (self visit: each) ].
-	^ closure
-!
-
-visitBlockSequenceNode: aNode
-	^ self
-		withSequence: IRBlockSequence new
-		do: [ 
-			aNode nodes ifNotEmpty: [
-				aNode nodes allButLast do: [ :each | 
-					self sequence add: (self visit: each) ].
-				aNode nodes last isReturnNode 
-					ifFalse: [ self sequence add: (IRBlockReturn new add: (self visit: aNode nodes last); yourself) ]
-					ifTrue: [ self sequence add: (self visit: aNode nodes last) ]]]
-!
-
-visitCascadeNode: aNode
-	| alias |
-
-	aNode receiver isImmutable ifFalse: [ 
-		alias := self alias: aNode receiver.
-		aNode nodes do: [ :each |
-			each receiver: (VariableNode new binding: alias variable) ]].
-
-	aNode nodes allButLast do: [ :each |
-		self sequence add: (self visit: each) ].
-
-	^ self alias: aNode nodes last
-!
-
-visitDynamicArrayNode: aNode
-	| array |
-	array := IRDynamicArray new.
-	(self aliasTemporally: aNode nodes) do: [:each | array add: each].
-	^ array
-!
-
-visitDynamicDictionaryNode: aNode
-	| dictionary |
-	dictionary := IRDynamicDictionary new.
-    (self aliasTemporally: aNode nodes) do: [:each | dictionary add: each].
-	^ dictionary
-!
-
-visitJSStatementNode: aNode
-	^ IRVerbatim new
-		source: aNode source;
-		yourself
-!
-
-visitMethodNode: aNode
-
-	self method: (IRMethod new
-		source: self source;
-        theClass: self theClass;
-		arguments: aNode arguments;
-		selector: aNode selector;
-		messageSends: aNode messageSends;
-        superSends: aNode superSends;
-		classReferences: aNode classReferences;
-		scope: aNode scope;
-		yourself).
-
-	aNode scope temps do: [ :each |
-		self method add: (IRTempDeclaration new
-			name: each name;
-            scope: aNode scope;
-			yourself) ].
-
-	aNode nodes do: [ :each | self method add: (self visit: each) ].
-
-	aNode scope hasLocalReturn ifFalse: [
-		(self method add: IRReturn new) add: (IRVariable new
-			variable: (aNode scope pseudoVars at: 'self');
-			yourself) ].
-
-	^ self method
-!
-
-visitReturnNode: aNode
-	| return |
-	return := aNode nonLocalReturn 
-		ifTrue: [ IRNonLocalReturn new ]
-		ifFalse: [ IRReturn new ].
-	return scope: aNode scope.
-	aNode nodes do: [ :each |
-		return add: (self alias: each) ].
-	^ return
-!
-
-visitSendNode: aNode
-	| send all receiver arguments |
-	send := IRSend new.
-	send 
-		selector: aNode selector;
-		index: aNode index.
-	aNode superSend ifTrue: [ send classSend: self theClass superclass ].
-    
-    all := self aliasTemporally: { aNode receiver }, aNode arguments.
-	receiver := all first.
-	arguments := all allButFirst.
-
-	send add: receiver.
-	arguments do: [ :each | send add: each ].
-
-	^ send
-!
-
-visitSequenceNode: aNode
-	^ self 
-		withSequence: IRSequence new 	
-		do: [
-			aNode nodes do: [ :each | | instruction |
-				instruction := self visit: each.
-				instruction isVariable ifFalse: [
-					self sequence add: instruction ]]]
-!
-
-visitValueNode: aNode
-	^ IRValue new 
-		value: aNode value; 
-		yourself
-!
-
-visitVariableNode: aNode
-	^ IRVariable new 
-		variable: aNode binding; 
-		yourself
-! !
-
-Object subclass: #IRInstruction
-	instanceVariableNames: 'parent instructions'
-	package:'Compiler'!
-!IRInstruction commentStamp!
-I am the abstract root class of the IR (intermediate representation) instructions class hierarchy.
-The IR graph is used to emit JavaScript code using a JSStream.!
-
-!IRInstruction methodsFor: '*Compiler'!
-
-instructions
-	^ instructions ifNil: [ instructions := OrderedCollection new ]
-!
-
-method
-	^ self parent method
-!
-
-parent
-	^ parent
-!
-
-parent: anIRInstruction
-	parent := anIRInstruction
-! !
-
-!IRInstruction methodsFor: '*Compiler'!
-
-add: anObject
-	anObject parent: self.
-	^ self instructions add: anObject
-!
-
-remove
-	self parent remove: self
-!
-
-remove: anIRInstruction
-	self instructions remove: anIRInstruction
-!
-
-replace: anIRInstruction with: anotherIRInstruction
-	anotherIRInstruction parent: self.
-	self instructions 
-		at: (self instructions indexOf: anIRInstruction)
-		put: anotherIRInstruction
-!
-
-replaceWith: anIRInstruction
-	self parent replace: self with: anIRInstruction
-! !
-
-!IRInstruction methodsFor: '*Compiler'!
-
-canBeAssigned
-	^ true
-!
-
-isClosure
-	^ false
-!
-
-isInlined
-	^ false
-!
-
-isLocalReturn
-	^ false
-!
-
-isMethod
-	^ false
-!
-
-isReturn
-	^ false
-!
-
-isSend
-	^ false
-!
-
-isSequence
-	^ false
-!
-
-isTempDeclaration
-	^ false
-!
-
-isVariable
-	^ false
-! !
-
-!IRInstruction methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitIRInstruction: self
-! !
-
-!IRInstruction class methodsFor: '*Compiler'!
-
-on: aBuilder
-	^ self new
-		builder: aBuilder;
-		yourself
-! !
-
-IRInstruction subclass: #IRAssignment
-	instanceVariableNames: ''
-	package:'Compiler'!
-
-!IRAssignment methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitIRAssignment: self
-! !
-
-IRInstruction subclass: #IRDynamicArray
-	instanceVariableNames: ''
-	package:'Compiler'!
-
-!IRDynamicArray methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitIRDynamicArray: self
-! !
-
-IRInstruction subclass: #IRDynamicDictionary
-	instanceVariableNames: ''
-	package:'Compiler'!
-
-!IRDynamicDictionary methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitIRDynamicDictionary: self
-! !
-
-IRInstruction subclass: #IRScopedInstruction
-	instanceVariableNames: 'scope'
-	package:'Compiler'!
-
-!IRScopedInstruction methodsFor: '*Compiler'!
-
-scope
-	^ scope
-!
-
-scope: aScope
-	scope := aScope
-! !
-
-IRScopedInstruction subclass: #IRClosureInstruction
-	instanceVariableNames: 'arguments'
-	package:'Compiler'!
-
-!IRClosureInstruction methodsFor: '*Compiler'!
-
-arguments
-	^ arguments ifNil: [ #() ]
-!
-
-arguments: aCollection
-	arguments := aCollection
-!
-
-locals
-	^ self arguments copy
-    	addAll: (self tempDeclarations collect: [ :each | each name ]); 
-        yourself
-!
-
-scope: aScope
-	super scope: aScope.
-	aScope instruction: self
-!
-
-tempDeclarations
-	^ self instructions select: [ :each | 
-    	each isTempDeclaration ]
-! !
-
-IRClosureInstruction subclass: #IRClosure
-	instanceVariableNames: ''
-	package:'Compiler'!
-
-!IRClosure methodsFor: '*Compiler'!
-
-sequence
-	^ self instructions last
-! !
-
-!IRClosure methodsFor: '*Compiler'!
-
-isClosure
-	^ true
-! !
-
-!IRClosure methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitIRClosure: self
-! !
-
-IRClosureInstruction subclass: #IRMethod
-	instanceVariableNames: 'theClass source selector classReferences messageSends superSends internalVariables'
-	package:'Compiler'!
-!IRMethod commentStamp!
-I am a method instruction!
-
-!IRMethod methodsFor: '*Compiler'!
-
-classReferences
-	^ classReferences
-!
-
-classReferences: aCollection
-	classReferences := aCollection
-!
-
-internalVariables
-	^ internalVariables ifNil: [ internalVariables := Set new ]
-!
-
-isMethod
-	^ true
-!
-
-messageSends
-	^ messageSends
-!
-
-messageSends: aCollection
-	messageSends := aCollection
-!
-
-method
-	^ self
-!
-
-selector
-	^ selector
-!
-
-selector: aString
-	selector := aString
-!
-
-source
-	^ source
-!
-
-source: aString
-	source := aString
-!
-
-superSends
-	^ superSends
-!
-
-superSends: aCollection
-	superSends := aCollection
-!
-
-theClass
-	^ theClass
-!
-
-theClass: aClass
-	theClass := aClass
-! !
-
-!IRMethod methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitIRMethod: self
-! !
-
-IRScopedInstruction subclass: #IRReturn
-	instanceVariableNames: ''
-	package:'Compiler'!
-!IRReturn commentStamp!
-I am a local return instruction.!
-
-!IRReturn methodsFor: '*Compiler'!
-
-canBeAssigned
-	^ false
-!
-
-isBlockReturn
-	^ false
-!
-
-isLocalReturn
-	^ true
-!
-
-isNonLocalReturn
-	^ self isLocalReturn not
-!
-
-isReturn
-	^ true
-! !
-
-!IRReturn methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitIRReturn: self
-! !
-
-IRReturn subclass: #IRBlockReturn
-	instanceVariableNames: ''
-	package:'Compiler'!
-!IRBlockReturn commentStamp!
-Smalltalk blocks return their last statement. I am a implicit block return instruction.!
-
-!IRBlockReturn methodsFor: '*Compiler'!
-
-isBlockReturn
-	^ true
-! !
-
-!IRBlockReturn methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitIRBlockReturn: self
-! !
-
-IRReturn subclass: #IRNonLocalReturn
-	instanceVariableNames: ''
-	package:'Compiler'!
-!IRNonLocalReturn commentStamp!
-I am a non local return instruction.
-Non local returns are handled using a try/catch JS statement.
-
-See IRNonLocalReturnHandling class!
-
-!IRNonLocalReturn methodsFor: '*Compiler'!
-
-isLocalReturn
-	^ false
-! !
-
-!IRNonLocalReturn methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitIRNonLocalReturn: self
-! !
-
-IRScopedInstruction subclass: #IRTempDeclaration
-	instanceVariableNames: 'name'
-	package:'Compiler'!
-
-!IRTempDeclaration methodsFor: '*Compiler'!
-
-name
-	^ name
-!
-
-name: aString
-	name := aString
-! !
-
-!IRTempDeclaration methodsFor: '*Compiler'!
-
-isTempDeclaration
-	^ true
-! !
-
-!IRTempDeclaration methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitIRTempDeclaration: self
-! !
-
-IRInstruction subclass: #IRSend
-	instanceVariableNames: 'selector classSend index'
-	package:'Compiler'!
-!IRSend commentStamp!
-I am a message send instruction.!
-
-!IRSend methodsFor: '*Compiler'!
-
-classSend
-	^ classSend
-!
-
-classSend: aClass
-	classSend := aClass
-!
-
-index
-	^ index
-!
-
-index: anInteger
-	index := anInteger
-!
-
-javascriptSelector
-	^ self classSend 
-    	ifNil: [ self selector asSelector ]
-      	ifNotNil: [ self selector asSuperSelector ]
-!
-
-selector
-	^ selector
-!
-
-selector: aString
-	selector := aString
-! !
-
-!IRSend methodsFor: '*Compiler'!
-
-isSend
-	^ true
-! !
-
-!IRSend methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitIRSend: self
-! !
-
-IRInstruction subclass: #IRSequence
-	instanceVariableNames: ''
-	package:'Compiler'!
-
-!IRSequence methodsFor: '*Compiler'!
-
-isSequence
-	^ true
-! !
-
-!IRSequence methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitIRSequence: self
-! !
-
-IRSequence subclass: #IRBlockSequence
-	instanceVariableNames: ''
-	package:'Compiler'!
-
-!IRBlockSequence methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitIRBlockSequence: self
-! !
-
-IRInstruction subclass: #IRValue
-	instanceVariableNames: 'value'
-	package:'Compiler'!
-!IRValue commentStamp!
-I am the simplest possible instruction. I represent a value.!
-
-!IRValue methodsFor: '*Compiler'!
-
-value
-	^value
-!
-
-value: aString
-	value := aString
-! !
-
-!IRValue methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitIRValue: self
-! !
-
-IRInstruction subclass: #IRVariable
-	instanceVariableNames: 'variable'
-	package:'Compiler'!
-!IRVariable commentStamp!
-I am a variable instruction.!
-
-!IRVariable methodsFor: '*Compiler'!
-
-variable
-	^ variable
-!
-
-variable: aScopeVariable
-	variable := aScopeVariable
-! !
-
-!IRVariable methodsFor: '*Compiler'!
-
-isVariable
-	^ true
-! !
-
-!IRVariable methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitIRVariable: self
-! !
-
-IRInstruction subclass: #IRVerbatim
-	instanceVariableNames: 'source'
-	package:'Compiler'!
-
-!IRVerbatim methodsFor: '*Compiler'!
-
-source
-	^ source
-!
-
-source: aString
-	source := aString
-! !
-
-!IRVerbatim methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitIRVerbatim: self
-! !
-
-Object subclass: #IRVisitor
-	instanceVariableNames: ''
-	package:'Compiler'!
-
-!IRVisitor methodsFor: '*Compiler'!
-
-visit: anIRInstruction
-	^ anIRInstruction accept: self
-!
-
-visitIRAssignment: anIRAssignment
-	^ self visitIRInstruction: anIRAssignment
-!
-
-visitIRBlockReturn: anIRBlockReturn
-	^ self visitIRReturn: anIRBlockReturn
-!
-
-visitIRBlockSequence: anIRBlockSequence
-	^ self visitIRSequence: anIRBlockSequence
-!
-
-visitIRClosure: anIRClosure
-	^ self visitIRInstruction: anIRClosure
-!
-
-visitIRDynamicArray: anIRDynamicArray
-	^ self visitIRInstruction: anIRDynamicArray
-!
-
-visitIRDynamicDictionary: anIRDynamicDictionary
-	^ self visitIRInstruction: anIRDynamicDictionary
-!
-
-visitIRInlinedClosure: anIRInlinedClosure
-	^ self visitIRClosure: anIRInlinedClosure
-!
-
-visitIRInlinedSequence: anIRInlinedSequence
-	^ self visitIRSequence: anIRInlinedSequence
-!
-
-visitIRInstruction: anIRInstruction
-	anIRInstruction instructions do: [ :each | self visit: each ].
-	^ anIRInstruction
-!
-
-visitIRMethod: anIRMethod
-	^ self visitIRInstruction: anIRMethod
-!
-
-visitIRNonLocalReturn: anIRNonLocalReturn
-	^ self visitIRInstruction: anIRNonLocalReturn
-!
-
-visitIRNonLocalReturnHandling: anIRNonLocalReturnHandling
-	^ self visitIRInstruction: anIRNonLocalReturnHandling
-!
-
-visitIRReturn: anIRReturn
-	^ self visitIRInstruction: anIRReturn
-!
-
-visitIRSend: anIRSend
-	^ self visitIRInstruction: anIRSend
-!
-
-visitIRSequence: anIRSequence
-	^ self visitIRInstruction: anIRSequence
-!
-
-visitIRTempDeclaration: anIRTempDeclaration
-	^ self visitIRInstruction: anIRTempDeclaration
-!
-
-visitIRValue: anIRValue
-	^ self visitIRInstruction: anIRValue
-!
-
-visitIRVariable: anIRVariable
-	^ self visitIRInstruction: anIRVariable
-!
-
-visitIRVerbatim: anIRVerbatim
-	^ self visitIRInstruction: anIRVerbatim
-! !
-
-IRVisitor subclass: #IRJSTranslator
-	instanceVariableNames: 'stream'
-	package:'Compiler'!
-
-!IRJSTranslator methodsFor: '*Compiler'!
-
-contents
-	^ self stream contents
-!
-
-stream
-	^ stream
-!
-
-stream: aStream
-	stream := aStream
-! !
-
-!IRJSTranslator methodsFor: '*Compiler'!
-
-initialize
-	super initialize.
-	stream := JSStream new.
-! !
-
-!IRJSTranslator methodsFor: '*Compiler'!
-
-visitIRAssignment: anIRAssignment
-	self visit: anIRAssignment instructions first.
-	self stream nextPutAssignment.
-	self visit: anIRAssignment instructions last.
-!
-
-visitIRClosure: anIRClosure
-	self stream 
-		nextPutClosureWith: [ 
-        	self stream nextPutVars: (anIRClosure tempDeclarations collect: [ :each |
-    				each name asVariableName ]).
-        	self stream 
-            	nextPutBlockContextFor: anIRClosure
-                during: [ super visitIRClosure: anIRClosure ] ]
-		arguments: anIRClosure arguments
-!
-
-visitIRDynamicArray: anIRDynamicArray
-	self stream nextPutAll: '['.
-	anIRDynamicArray instructions
-		do: [ :each | self visit: each ]
-		separatedBy: [ self stream nextPutAll: ',' ].
-	stream nextPutAll: ']'
-!
-
-visitIRDynamicDictionary: anIRDynamicDictionary
-	self stream nextPutAll: 'smalltalk.HashedCollection._fromPairs_(['.
-		anIRDynamicDictionary instructions 
-			do: [ :each | self visit: each ]
-			separatedBy: [self stream nextPutAll: ',' ].
-	self stream nextPutAll: '])'
-!
-
-visitIRMethod: anIRMethod
-
-	self stream
-		nextPutMethodDeclaration: anIRMethod 
-		with: [ self stream 
-			nextPutFunctionWith: [ 
-            	self stream nextPutVars: (anIRMethod tempDeclarations collect: [ :each |
-    				each name asVariableName ]).
-            	self stream nextPutContextFor: anIRMethod during: [
-				anIRMethod internalVariables notEmpty ifTrue: [
-					self stream nextPutVars: (anIRMethod internalVariables asArray collect: [ :each |
-						each variable alias ]) ].
-				anIRMethod scope hasNonLocalReturn 
-					ifTrue: [
-						self stream nextPutNonLocalReturnHandlingWith: [
-							super visitIRMethod: anIRMethod ]]
-					ifFalse: [ super visitIRMethod: anIRMethod ]]]
-			arguments: anIRMethod arguments ]
-!
-
-visitIRNonLocalReturn: anIRNonLocalReturn
-	self stream nextPutNonLocalReturnWith: [
-		super visitIRNonLocalReturn: anIRNonLocalReturn ]
-!
-
-visitIRReturn: anIRReturn
-	self stream nextPutReturnWith: [
-		super visitIRReturn: anIRReturn ]
-!
-
-visitIRSend: anIRSend
-	anIRSend classSend 
-    	ifNil: [
-			self stream nextPutAll: '_st('.
-			self visit: anIRSend instructions first.
-   		 	self stream nextPutAll: ').', anIRSend selector asSelector, '('.
-			anIRSend instructions allButFirst
-				do: [ :each | self visit: each ]
-				separatedBy: [ self stream nextPutAll: ',' ].
-			self stream nextPutAll: ')' ]
-		ifNotNil: [ 
-			self stream 
-            	nextPutAll: anIRSend classSend asJavascript, '.fn.prototype.';
-				nextPutAll: anIRSend selector asSelector, '.apply(';
-				nextPutAll: '_st('.
-			self visit: anIRSend instructions first.
-			self stream nextPutAll: '), ['.
-			anIRSend instructions allButFirst
-				do: [ :each | self visit: each ]
-				separatedBy: [ self stream nextPutAll: ',' ].
-			self stream nextPutAll: '])' ]
-!
-
-visitIRSequence: anIRSequence
-	self stream nextPutSequenceWith: [
-		anIRSequence instructions do: [ :each |
-			self stream nextPutStatementWith: (self visit: each) ]]
-!
-
-visitIRTempDeclaration: anIRTempDeclaration
-	"self stream 
-    	nextPutAll: 'var ', anIRTempDeclaration name asVariableName, ';'; 
-        lf"
-!
-
-visitIRValue: anIRValue
-	self stream nextPutAll: anIRValue value asJavascript
-!
-
-visitIRVariable: anIRVariable
-	anIRVariable variable name = 'thisContext'
-    	ifTrue: [ self stream nextPutAll: 'smalltalk.getThisContext()' ]
-      	ifFalse: [ self stream nextPutAll: anIRVariable variable alias ]
-!
-
-visitIRVerbatim: anIRVerbatim
-	self stream nextPutStatementWith: [
-		self stream nextPutAll: anIRVerbatim source ]
-! !
-
-Object subclass: #JSStream
-	instanceVariableNames: 'stream'
-	package:'Compiler'!
-
-!JSStream methodsFor: '*Compiler'!
-
-contents
-	^ stream contents
-! !
-
-!JSStream methodsFor: '*Compiler'!
-
-initialize
-	super initialize.
-	stream := '' writeStream.
-! !
-
-!JSStream methodsFor: '*Compiler'!
-
-lf
-	stream lf
-!
-
-nextPut: aString
-	stream nextPut: aString
-!
-
-nextPutAll: aString
-	stream nextPutAll: aString
-!
-
-nextPutAssignment
-	stream nextPutAll: '='
-!
-
-nextPutBlockContextFor: anIRClosure during: aBlock
-	self 
-    	nextPutAll: 'return smalltalk.withContext(function(', anIRClosure scope alias, ') {'; 
-        nextPutAll: String cr.
-    
-    aBlock value.
-    
-    self 
-    	nextPutAll: '}, function(', anIRClosure scope alias, ') {';
-        nextPutAll: anIRClosure scope alias, '.fillBlock({'.
-    
-    anIRClosure locals 
-    	do: [ :each |
-    		self 
-        		nextPutAll: each asVariableName;
-           	 	nextPutAll: ':';
-        		nextPutAll: each asVariableName]
-		separatedBy: [ self nextPutAll: ',' ].
-    
-    self
-    	nextPutAll: '},';
-        nextPutAll:  anIRClosure method scope alias, ')})'
-!
-
-nextPutClosureWith: aBlock arguments: anArray
-	stream nextPutAll: '(function('.
-	anArray 
-		do: [ :each | stream nextPutAll: each asVariableName ]
-		separatedBy: [ stream nextPut: ',' ].
-	stream nextPutAll: '){'; lf.
-	aBlock value.
-	stream nextPutAll: '})'
-!
-
-nextPutContextFor: aMethod during: aBlock
-	self 
-    	nextPutAll: 'return smalltalk.withContext(function(', aMethod scope alias, ') { '; 
-        nextPutAll: String cr.
-    aBlock value.
-    
-    self 
-    	nextPutAll: '}, function(', aMethod scope alias, ') {', aMethod scope alias; 
-        nextPutAll: '.fill(self,', aMethod selector asJavascript, ',{'.
-
-    aMethod locals 
-    	do: [ :each |
-    		self 
-        		nextPutAll: each asVariableName;
-           	 	nextPutAll: ':';
-        		nextPutAll: each asVariableName]
-		separatedBy: [ self nextPutAll: ',' ].
-    
-    self
-    	nextPutAll: '}, ';
-        nextPutAll: aMethod theClass asJavascript;
-        nextPutAll: ')})'
-!
-
-nextPutFunctionWith: aBlock arguments: anArray
-	stream nextPutAll: 'fn: function('.
-	anArray 
-		do: [ :each | stream nextPutAll: each asVariableName ]
-		separatedBy: [ stream nextPut: ',' ].
-	stream nextPutAll: '){'; lf.
-	stream nextPutAll: 'var self=this;'; lf.
-	aBlock value.
-	stream nextPutAll: '}'
-!
-
-nextPutIf: aBlock with: anotherBlock
-	stream nextPutAll: 'if('.
-	aBlock value.
-	stream nextPutAll: '){'; lf.
-	anotherBlock value.
-	stream nextPutAll: '}'
-!
-
-nextPutIfElse: aBlock with: ifBlock with: elseBlock
-	stream nextPutAll: 'if('.
-	aBlock value.
-	stream nextPutAll: '){'; lf.
-	ifBlock value.
-	stream nextPutAll: '} else {'; lf.
-	elseBlock value.
-	stream nextPutAll: '}'
-!
-
-nextPutMethodDeclaration: aMethod with: aBlock
-	stream 
-		nextPutAll: 'smalltalk.method({'; lf;
-		nextPutAll: 'selector: "', aMethod selector, '",'; lf;
-		nextPutAll: 'source: ', aMethod source asJavascript, ',';lf. 
-	aBlock value.
-	stream 
-		nextPutAll: ',', String lf, 'messageSends: ';
-		nextPutAll: aMethod messageSends asArray asJavascript, ','; lf;
-        nextPutAll: 'args: ', (aMethod arguments collect: [ :each | each value ]) asArray asJavascript, ','; lf;
-		nextPutAll: 'referencedClasses: ['.
-	aMethod classReferences 
-		do: [:each | stream nextPutAll: each asJavascript]
-		separatedBy: [stream nextPutAll: ','].
-	stream 
-		nextPutAll: ']';
-		nextPutAll: '})'
-!
-
-nextPutNonLocalReturnHandlingWith: aBlock
-	stream 
-		nextPutAll: 'var $early={};'; lf;
-		nextPutAll: 'try {'; lf.
-	aBlock value.
-	stream 
-		nextPutAll: '}'; lf;
-		nextPutAll: 'catch(e) {if(e===$early)return e[0]; throw e}'; lf
-!
-
-nextPutNonLocalReturnWith: aBlock
-	stream nextPutAll: 'throw $early=['.
-	aBlock value.
-	stream nextPutAll: ']'
-!
-
-nextPutReturn
-	stream nextPutAll: 'return '
-!
-
-nextPutReturnWith: aBlock
-	self nextPutReturn.
-	aBlock value
-!
-
-nextPutSequenceWith: aBlock
-	"stream 
-		nextPutAll: 'switch(smalltalk.thisContext.pc){'; lf."
-	aBlock value.
-	"stream 
-		nextPutAll: '};'; lf"
-!
-
-nextPutStatement: anInteger with: aBlock
-	stream nextPutAll: 'case ', anInteger asString, ':'; lf.
-	self nextPutStatementWith: aBlock.
-	stream nextPutAll: 'smalltalk.thisContext.pc=', (anInteger + 1) asString, ';'; lf
-!
-
-nextPutStatementWith: aBlock
-	aBlock value.
-	stream nextPutAll: ';'; lf
-!
-
-nextPutVar: aString
-	stream nextPutAll: 'var ', aString, ';'; lf
-!
-
-nextPutVars: aCollection
-	aCollection ifEmpty: [ ^self ].
-    
-	stream nextPutAll: 'var '.
-	aCollection 
-		do: [ :each | stream nextPutAll: each ]
-		separatedBy: [ stream nextPutAll: ',' ].
-	stream nextPutAll: ';'; lf
-! !
-
-!BlockClosure methodsFor: '*Compiler'!
-
-appendToInstruction: anIRInstruction
-    anIRInstruction appendBlock: self
-! !
-
-!String methodsFor: '*Compiler'!
-
-asVariableName
-	^ (Smalltalk current reservedWords includes: self)
-		ifTrue: [ self, '_' ]
-		ifFalse: [ self ]
-! !
-
-IRAssignment subclass: #IRInlinedAssignment
-	instanceVariableNames: ''
-	package:'Compiler'!
-!IRInlinedAssignment commentStamp!
-I represent an inlined assignment instruction.!
-
-!IRInlinedAssignment methodsFor: '*Compiler'!
-
-isInlined
-	^ true
-! !
-
-!IRInlinedAssignment methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitIRInlinedAssignment: self
-! !
-
-IRClosure subclass: #IRInlinedClosure
-	instanceVariableNames: ''
-	package:'Compiler'!
-!IRInlinedClosure commentStamp!
-I represent an inlined closure instruction.!
-
-!IRInlinedClosure methodsFor: '*Compiler'!
-
-isInlined
-	^ true
-! !
-
-!IRInlinedClosure methodsFor: '*Compiler'!
-
-accept: aVisitor
-	aVisitor visitIRInlinedClosure: self
-! !
-
-IRReturn subclass: #IRInlinedReturn
-	instanceVariableNames: ''
-	package:'Compiler'!
-!IRInlinedReturn commentStamp!
-I represent an inlined local return instruction.!
-
-!IRInlinedReturn methodsFor: '*Compiler'!
-
-isInlined
-	^ true
-! !
-
-!IRInlinedReturn methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitIRInlinedReturn: self
-! !
-
-IRInlinedReturn subclass: #IRInlinedNonLocalReturn
-	instanceVariableNames: ''
-	package:'Compiler'!
-!IRInlinedNonLocalReturn commentStamp!
-I represent an inlined non local return instruction.!
-
-!IRInlinedNonLocalReturn methodsFor: '*Compiler'!
-
-isInlined
-	^ true
-! !
-
-!IRInlinedNonLocalReturn methodsFor: '*Compiler'!
-
-accept: aVisitor
-	^ aVisitor visitIRInlinedNonLocalReturn: self
-! !
-
-IRSend subclass: #IRInlinedSend
-	instanceVariableNames: ''
-	package:'Compiler'!
-!IRInlinedSend commentStamp!
-I am the abstract super class of inlined message send instructions.!
-
-!IRInlinedSend methodsFor: '*Compiler'!
-
-isInlined
-	^ true
-! !
-
-!IRInlinedSend methodsFor: '*Compiler'!
-
-accept: aVisitor
-	aVisitor visitInlinedSend: self
-! !
-
-IRInlinedSend subclass: #IRInlinedIfFalse
-	instanceVariableNames: ''
-	package:'Compiler'!
-
-!IRInlinedIfFalse methodsFor: '*Compiler'!
-
-accept: aVisitor
-	aVisitor visitIRInlinedIfFalse: self
-! !
-
-IRInlinedSend subclass: #IRInlinedIfNilIfNotNil
-	instanceVariableNames: ''
-	package:'Compiler'!
-
-!IRInlinedIfNilIfNotNil methodsFor: '*Compiler'!
-
-accept: aVisitor
-	aVisitor visitIRInlinedIfNilIfNotNil: self
-! !
-
-IRInlinedSend subclass: #IRInlinedIfTrue
-	instanceVariableNames: ''
-	package:'Compiler'!
-
-!IRInlinedIfTrue methodsFor: '*Compiler'!
-
-accept: aVisitor
-	aVisitor visitIRInlinedIfTrue: self
-! !
-
-IRInlinedSend subclass: #IRInlinedIfTrueIfFalse
-	instanceVariableNames: ''
-	package:'Compiler'!
-
-!IRInlinedIfTrueIfFalse methodsFor: '*Compiler'!
-
-accept: aVisitor
-	aVisitor visitIRInlinedIfTrueIfFalse: self
-! !
-
-IRBlockSequence subclass: #IRInlinedSequence
-	instanceVariableNames: ''
-	package:'Compiler'!
-!IRInlinedSequence commentStamp!
-I represent a (block) sequence inside an inlined closure instruction (instance of `IRInlinedClosure`).!
-
-!IRInlinedSequence methodsFor: '*Compiler'!
-
-isInlined
-	^ true
-! !
-
-!IRInlinedSequence methodsFor: '*Compiler'!
-
-accept: aVisitor
-	aVisitor visitIRInlinedSequence: self
-! !
-
-IRVisitor subclass: #IRInliner
-	instanceVariableNames: ''
-	package:'Compiler'!
-!IRInliner commentStamp!
-I visit an IR tree, inlining message sends and block closures.
-
-Message selectors that can be inlined are answered by `IRSendInliner >> #inlinedSelectors`!
-
-!IRInliner methodsFor: '*Compiler'!
-
-assignmentInliner
-	^ IRAssignmentInliner new 
-		translator: self;
-		yourself
-!
-
-nonLocalReturnInliner
-	^ IRNonLocalReturnInliner new 
-		translator: self;
-		yourself
-!
-
-returnInliner
-	^ IRReturnInliner new 
-		translator: self;
-		yourself
-!
-
-sendInliner
-	^ IRSendInliner new 
-		translator: self;
-		yourself
-! !
-
-!IRInliner methodsFor: '*Compiler'!
-
-shouldInlineAssignment: anIRAssignment
-	^ anIRAssignment isInlined not and: [ 
-		anIRAssignment instructions last isSend and: [	
-			self shouldInlineSend: (anIRAssignment instructions last) ]]
-!
-
-shouldInlineReturn: anIRReturn
-	^ anIRReturn isInlined not and: [ 
-		anIRReturn instructions first isSend and: [	
-			self shouldInlineSend: (anIRReturn instructions first) ]]
-!
-
-shouldInlineSend: anIRSend
-	^ anIRSend isInlined not and: [
-		IRSendInliner shouldInline: anIRSend ]
-! !
-
-!IRInliner methodsFor: '*Compiler'!
-
-transformNonLocalReturn: anIRNonLocalReturn
-	"Replace a non local return into a local return"
-
-	| localReturn |
-	anIRNonLocalReturn scope canInlineNonLocalReturns ifTrue: [
-		anIRNonLocalReturn scope methodScope removeNonLocalReturn: anIRNonLocalReturn scope.
-		localReturn := IRReturn new
-			scope: anIRNonLocalReturn scope;
-			yourself.
-		anIRNonLocalReturn instructions do: [ :each |
-			localReturn add: each ].
-		anIRNonLocalReturn replaceWith: localReturn.
-		^ localReturn ].
-	^ super visitIRNonLocalReturn: anIRNonLocalReturn
-!
-
-visitIRAssignment: anIRAssignment
-	^ (self shouldInlineAssignment: anIRAssignment) 
-		ifTrue: [ self assignmentInliner inlineAssignment: anIRAssignment ]
-		ifFalse: [ super visitIRAssignment: anIRAssignment ]
-!
-
-visitIRNonLocalReturn: anIRNonLocalReturn
-	^ (self shouldInlineReturn: anIRNonLocalReturn) 
-		ifTrue: [ self nonLocalReturnInliner inlineReturn: anIRNonLocalReturn ]
-		ifFalse: [ self transformNonLocalReturn: anIRNonLocalReturn ]
-!
-
-visitIRReturn: anIRReturn
-	^ (self shouldInlineReturn: anIRReturn) 
-		ifTrue: [ self returnInliner inlineReturn: anIRReturn ]
-		ifFalse: [ super visitIRReturn: anIRReturn ]
-!
-
-visitIRSend: anIRSend
-	^ (self shouldInlineSend: anIRSend)
-		ifTrue: [ self sendInliner inlineSend: anIRSend ]
-		ifFalse: [ super visitIRSend: anIRSend ]
-! !
-
-IRJSTranslator subclass: #IRInliningJSTranslator
-	instanceVariableNames: ''
-	package:'Compiler'!
-!IRInliningJSTranslator commentStamp!
-I am a specialized JavaScript translator able to write inlined IR instructions to JavaScript stream (`JSStream` instance).!
-
-!IRInliningJSTranslator methodsFor: '*Compiler'!
-
-visitIRInlinedAssignment: anIRInlinedAssignment
-	self visit: anIRInlinedAssignment instructions last
-!
-
-visitIRInlinedClosure: anIRInlinedClosure
-	anIRInlinedClosure instructions do: [ :each |
-		self visit: each ]
-!
-
-visitIRInlinedIfFalse: anIRInlinedIfFalse
-	self stream nextPutIf: [ 
-		self stream nextPutAll: '!! smalltalk.assert('.
-		self visit: anIRInlinedIfFalse instructions first.
-		self stream nextPutAll: ')' ]
-		with: [ self visit: anIRInlinedIfFalse instructions last ]
-!
-
-visitIRInlinedIfNil: anIRInlinedIfNil
-	self stream nextPutIf: [ 
-		self stream nextPutAll: '($receiver = '. 
-		self visit: anIRInlinedIfNil instructions first.
-		self stream nextPutAll: ') == nil || $receiver == undefined' ]
-		with: [ self visit: anIRInlinedIfNil instructions last ]
-!
-
-visitIRInlinedIfNilIfNotNil: anIRInlinedIfNilIfNotNil
-	self stream 
-		nextPutIfElse: [ 
-			self stream nextPutAll: '($receiver = '. 
-			self visit: anIRInlinedIfNilIfNotNil instructions first.
-			self stream nextPutAll: ') == nil || $receiver == undefined' ]
-		with: [ self visit: anIRInlinedIfNilIfNotNil instructions second ]
-		with: [ self visit: anIRInlinedIfNilIfNotNil instructions third ]
-!
-
-visitIRInlinedIfTrue: anIRInlinedIfTrue
-	self stream nextPutIf: [ 
-		self stream nextPutAll: 'smalltalk.assert('. 
-		self visit: anIRInlinedIfTrue instructions first.
-		self stream nextPutAll: ')' ]
-		with: [ self visit: anIRInlinedIfTrue instructions last ]
-!
-
-visitIRInlinedIfTrueIfFalse: anIRInlinedIfTrueIfFalse
-	self stream 
-		nextPutIfElse: [ 
-			self stream nextPutAll: 'smalltalk.assert('. 
-			self visit: anIRInlinedIfTrueIfFalse instructions first.
-			self stream nextPutAll: ')' ]
-		with: [ self visit: anIRInlinedIfTrueIfFalse instructions second ]
-		with: [ self visit: anIRInlinedIfTrueIfFalse instructions third ]
-!
-
-visitIRInlinedNonLocalReturn: anIRInlinedReturn
-	self stream nextPutStatementWith: [
-		self visit: anIRInlinedReturn instructions last ].
-	self stream nextPutNonLocalReturnWith: [ ]
-!
-
-visitIRInlinedReturn: anIRInlinedReturn
-	self visit: anIRInlinedReturn instructions last
-!
-
-visitIRInlinedSequence: anIRInlinedSequence
-	anIRInlinedSequence instructions do: [ :each | 
-		self stream nextPutStatementWith: [ self visit: each ]]
-! !
-
-Object subclass: #IRSendInliner
-	instanceVariableNames: 'send translator'
-	package:'Compiler'!
-!IRSendInliner commentStamp!
-I inline some message sends and block closure arguments. I heavily rely on #perform: to dispatch inlining methods.!
-
-!IRSendInliner methodsFor: '*Compiler'!
-
-send
-	^ send
-!
-
-send: anIRSend
-	send := anIRSend
-!
-
-translator
-	^ translator
-!
-
-translator: anASTTranslator
-	translator := anASTTranslator
-! !
-
-!IRSendInliner methodsFor: '*Compiler'!
-
-inliningError: aString
-	InliningError signal: aString
-! !
-
-!IRSendInliner methodsFor: '*Compiler'!
-
-inlinedClosure
-	^ IRInlinedClosure new
-!
-
-inlinedSequence
-	^ IRInlinedSequence new
-! !
-
-!IRSendInliner methodsFor: '*Compiler'!
-
-ifFalse: anIRInstruction
-	^ self inlinedSend: IRInlinedIfFalse new with: anIRInstruction
-!
-
-ifFalse: anIRInstruction ifTrue: anotherIRInstruction
-	^ self perform: #ifTrue:ifFalse: withArguments: { anotherIRInstruction. anIRInstruction }
-!
-
-ifNil: anIRInstruction
-	^ self 
-		inlinedSend: IRInlinedIfNilIfNotNil new 
-		with: anIRInstruction
-		with: (IRClosure new
-			scope: anIRInstruction scope copy;
-			add: (IRBlockSequence new
-				add: self send instructions first;
-				yourself);
-			yourself)
-!
-
-ifNil: anIRInstruction ifNotNil: anotherIRInstruction
-	^ self inlinedSend: IRInlinedIfNilIfNotNil new with: anIRInstruction with: anotherIRInstruction
-!
-
-ifNotNil: anIRInstruction
-	^ self 
-		inlinedSend: IRInlinedIfNilIfNotNil new
-		with: (IRClosure new
-			scope: anIRInstruction scope copy;
-			add: (IRBlockSequence new
-				add: self send instructions first;
-				yourself);
-			yourself)
-		with: anIRInstruction
-!
-
-ifNotNil: anIRInstruction ifNil: anotherIRInstruction
-	^ self inlinedSend: IRInlinedIfNilIfNotNil new with: anotherIRInstruction with: anIRInstruction
-!
-
-ifTrue: anIRInstruction
-	^ self inlinedSend: IRInlinedIfTrue new with: anIRInstruction
-!
-
-ifTrue: anIRInstruction ifFalse: anotherIRInstruction
-	^ self inlinedSend: IRInlinedIfTrueIfFalse new with: anIRInstruction with: anotherIRInstruction
-!
-
-inlineClosure: anIRClosure
-	| inlinedClosure sequence statements |
-
-	inlinedClosure := self inlinedClosure.
-	inlinedClosure scope: anIRClosure scope.
-
-	"Add the possible temp declarations"
-	anIRClosure instructions do: [ :each | 
-		each isSequence ifFalse: [
-			inlinedClosure add: each ]].
-
-	"Add a block sequence"
-	sequence := self inlinedSequence.
-	inlinedClosure add: sequence.
-
-	"Get all the statements"
-	statements := anIRClosure instructions last instructions.
-	
-	statements ifNotEmpty: [
-		statements allButLast do: [ :each | sequence add: each ].
-
-		"Inlined closures don't have implicit local returns"
-		(statements last isReturn and: [ statements last isBlockReturn ])
-			ifTrue: [ sequence add: statements last instructions first ]
-			ifFalse: [ sequence add: statements last ] ].
-
-	^ inlinedClosure
-!
-
-inlineSend: anIRSend
-	self send: anIRSend.
-	^ self 
-		perform: self send selector 
-		withArguments: self send instructions allButFirst
-!
-
-inlinedSend: inlinedSend with: anIRInstruction
-	| inlinedClosure |
-
-	anIRInstruction isClosure ifFalse: [ self inliningError: 'Message argument should be a block' ].
-	anIRInstruction arguments size = 0 ifFalse: [ self inliningError: 'Inlined block should have zero argument' ].
-
-	inlinedClosure := self translator visit: (self inlineClosure: anIRInstruction).
-
-	inlinedSend
-		add: self send instructions first;
-		add: inlinedClosure.
-
-	self send replaceWith: inlinedSend.
-
-	^ inlinedSend
-!
-
-inlinedSend: inlinedSend with: anIRInstruction with: anotherIRInstruction
-	| inlinedClosure1 inlinedClosure2 |
-
-	anIRInstruction isClosure ifFalse: [ self inliningError: 'Message argument should be a block' ].
-	anIRInstruction arguments size = 0 ifFalse: [ self inliningError: 'Inlined block should have zero argument' ].
-
-	anotherIRInstruction isClosure ifFalse: [ self inliningError: 'Message argument should be a block' ].
-	anotherIRInstruction arguments size = 0 ifFalse: [ self inliningError: 'Inlined block should have zero argument' ].
-
-	inlinedClosure1 := self translator visit: (self inlineClosure: anIRInstruction).
-	inlinedClosure2 := self translator visit: (self inlineClosure: anotherIRInstruction).
-
-
-	inlinedSend
-		add: self send instructions first;
-		add: inlinedClosure1;
-		add: inlinedClosure2.
-
-	self send replaceWith: inlinedSend.
-	^ inlinedSend
-! !
-
-!IRSendInliner class methodsFor: '*Compiler'!
-
-inlinedSelectors
-	^ #('ifTrue:' 'ifFalse:' 'ifTrue:ifFalse:' 'ifFalse:ifTrue:' 'ifNil:' 'ifNotNil:' 'ifNil:ifNotNil:' 'ifNotNil:ifNil')
-!
-
-shouldInline: anIRInstruction
-	(self inlinedSelectors includes: anIRInstruction selector) ifFalse: [ ^ false ].
-	anIRInstruction instructions allButFirst do: [ :each |
-		each isClosure ifFalse: [ ^ false ]].
-	^ true
-! !
-
-IRSendInliner subclass: #IRAssignmentInliner
-	instanceVariableNames: 'assignment'
-	package:'Compiler'!
-!IRAssignmentInliner commentStamp!
-I inline message sends together with assignments by moving them around into the inline closure instructions. 
-
-##Example
-
-	foo
-		| a |
-		a := true ifTrue: [ 1 ]
-
-Will produce:
-
-	if(smalltalk.assert(true) {
-		a = 1;
-	};!
-
-!IRAssignmentInliner methodsFor: '*Compiler'!
-
-assignment
-	^ assignment
-!
-
-assignment: aNode
-	assignment := aNode
-! !
-
-!IRAssignmentInliner methodsFor: '*Compiler'!
-
-inlineAssignment: anIRAssignment
-	| inlinedAssignment |
-	self assignment: anIRAssignment.
-	inlinedAssignment := IRInlinedAssignment new.
-	anIRAssignment instructions do: [ :each |
-		inlinedAssignment add: each ].
-	anIRAssignment replaceWith: inlinedAssignment.
-	self inlineSend: inlinedAssignment instructions last.
-	^ inlinedAssignment
-!
-
-inlineClosure: anIRClosure
-	| inlinedClosure statements |
-
-	inlinedClosure := super inlineClosure: anIRClosure.
-	statements := inlinedClosure instructions last instructions.
-	
-	statements ifNotEmpty: [
-		statements last canBeAssigned ifTrue: [
-			statements last replaceWith: (IRAssignment new
-				add: self assignment instructions first;
-				add: statements last copy;
-				yourself) ] ].
-
-	^ inlinedClosure
-! !
-
-IRSendInliner subclass: #IRNonLocalReturnInliner
-	instanceVariableNames: ''
-	package:'Compiler'!
-
-!IRNonLocalReturnInliner methodsFor: '*Compiler'!
-
-inlinedReturn
-	^ IRInlinedNonLocalReturn new
-! !
-
-!IRNonLocalReturnInliner methodsFor: '*Compiler'!
-
-inlineClosure: anIRClosure
-	"| inlinedClosure statements |
-
-	inlinedClosure := super inlineClosure: anIRClosure.
-	statements := inlinedClosure instructions last instructions.
-	
-	statements ifNotEmpty: [
-		statements last replaceWith: (IRNonLocalReturn new
-			add: statements last copy;
-			yourself) ].
-
-	^ inlinedClosure"
-
-	^ super inlineCLosure: anIRClosure
-! !
-
-IRSendInliner subclass: #IRReturnInliner
-	instanceVariableNames: ''
-	package:'Compiler'!
-!IRReturnInliner commentStamp!
-I inline message sends with inlined closure together with a return instruction.!
-
-!IRReturnInliner methodsFor: '*Compiler'!
-
-inlinedReturn
-	^ IRInlinedReturn new
-! !
-
-!IRReturnInliner methodsFor: '*Compiler'!
-
-inlineClosure: anIRClosure
-	| closure statements |
-
-	closure := super inlineClosure: anIRClosure.
-	statements := closure instructions last instructions.
-	
-	statements ifNotEmpty: [
-		statements last isReturn
-			ifFalse: [ statements last replaceWith: (IRReturn new
-				add: statements last copy;
-				yourself)] ].
-
-	^ closure
-!
-
-inlineReturn: anIRReturn
-	| return |
-	return := self inlinedReturn.
-	anIRReturn instructions do: [ :each |
-		return add: each ].
-	anIRReturn replaceWith: return.
-	self inlineSend: return instructions last.
-	^ return
-! !
-
-CodeGenerator subclass: #InliningCodeGenerator
-	instanceVariableNames: ''
-	package:'Compiler'!
-!InliningCodeGenerator commentStamp!
-I am a specialized code generator that uses inlining to produce more optimized JavaScript output!
-
-!InliningCodeGenerator methodsFor: '*Compiler'!
-
-compileNode: aNode
-	| ir stream |
-
-	self semanticAnalyzer visit: aNode.
-	ir := self translator visit: aNode.
-	self inliner visit: ir.
-
-	^ self irTranslator
-		visit: ir;
-		contents
-!
-
-inliner
-	^ IRInliner new
-!
-
-irTranslator
-	^ IRInliningJSTranslator new
-! !
-
-NodeVisitor subclass: #AIContext
-	instanceVariableNames: 'outerContext pc locals method'
-	package:'Compiler'!
-!AIContext commentStamp!
-AIContext is like a `MethodContext`, used by the `ASTInterpreter`.
-Unlike a `MethodContext`, it is not read-only.
-
-When debugging, `AIContext` instances are created by copying the current `MethodContext` (thisContext)!
-
-!AIContext methodsFor: '*Compiler'!
-
-localAt: aString
-	^ self locals at: aString ifAbsent: [ nil ]
-!
-
-localAt: aString put: anObject
-	self locals at: aString put: anObject
-!
-
-locals
-	^ locals ifNil: [ locals := Dictionary new ]
-!
-
-method
-	^ method
-!
-
-method: aCompiledMethod
-	method := aCompiledMethod
-!
-
-outerContext
-	^ outerContext
-!
-
-outerContext: anAIContext
-	outerContext := anAIContext
-!
-
-pc
-	^ pc ifNil: [ pc := 0 ]
-!
-
-pc: anInteger
-	pc := anInteger
-!
-
-receiver
-	^ self localAt: 'self'
-!
-
-receiver: anObject
-	self localAt: 'self' put: anObject
-!
-
-selector
-	^ self metod
-    	ifNotNil: [ self method selector ]
-! !
-
-!AIContext methodsFor: '*Compiler'!
-
-initializeFromMethodContext: aMethodContext
-	self pc: aMethodContext pc.
-    self receiver: aMethodContext receiver.
-    self method: aMethodContext method.
-    aMethodContext outerContext ifNotNil: [
-		self outerContext: (self class fromMethodContext: aMethodContext outerContext) ].
-    aMethodContext locals keysAndValuesDo: [ :key :value |
-    	self locals at: key put: value ]
-! !
-
-!AIContext class methodsFor: '*Compiler'!
-
-fromMethodContext: aMethodContext
-	^ self new
-    	initializeFromMethodContext: aMethodContext;
-        yourself
-! !
-
-Object subclass: #ASTDebugger
-	instanceVariableNames: 'interpreter context'
-	package:'Compiler'!
-!ASTDebugger commentStamp!
-ASTDebugger is a debugger to Amber.
-It uses an AST interpreter to step through the code.
-
-ASTDebugger instances are created from a `MethodContext` with `ASTDebugger class >> context:`.
-They hold an `AIContext` instance internally, recursive copy of the `MethodContext`.
-
-Use the methods of the 'stepping' protocol to do stepping.!
-
-!ASTDebugger methodsFor: '*Compiler'!
-
-context
-	^ context
-!
-
-context: aContext
-	context := AIContext new.
-!
-
-interpreter
-	^ interpreter ifNil: [ interpreter := self defaultInterpreterClass new ]
-!
-
-interpreter: anInterpreter
-	interpreter := anInterpreter
-!
-
-method
-	^ self context method
-! !
-
-!ASTDebugger methodsFor: '*Compiler'!
-
-defaultInterpreterClass
-	^ ASTSteppingInterpreter
-! !
-
-!ASTDebugger methodsFor: '*Compiler'!
-
-buildAST
-	"Build the AST tree from the method source code.
-    The AST is annotated with a SemanticAnalyzer, 
-    to know the semantics and bindings of each node needed for later debugging"
-    
-    | ast |
-    
-    ast := Smalltalk current parse: self method source.
-    (SemanticAnalyzer on: self context receiver class)
-    	visit: ast.    
-    
-    ^ ast
-!
-
-initializeInterpreter
-	self interpreter interpret: self buildAST nodes first
-!
-
-initializeWithContext: aMethodContext
-	"TODO: do we need to handle block contexts?"
-    
-    self context: (AIContext fromMethodContext: aMethodContext).
-    self initializeInterpreter
-! !
-
-!ASTDebugger methodsFor: '*Compiler'!
-
-restart
-	self shouldBeImplemented
-!
-
-resume
-	self shouldBeImplemented
-!
-
-step
-	"The ASTSteppingInterpreter stops at each node interpretation. 
-    One step will interpret nodes until:
-    - we get at the end
-    - the next node is a stepping node (send, assignment, etc.)"
-    
-	[ (self interpreter nextNode notNil and: [ self interpreter nextNode stopOnStepping ])
-		or: [ self interpreter atEnd not ] ] 
- 			whileFalse: [
-				self interpreter step. 
-                self step ]
-!
-
-stepInto
-	self shouldBeImplemented
-!
-
-stepOver
-	self step
-! !
-
-!ASTDebugger class methodsFor: '*Compiler'!
-
-context: aMethodContext
-	^ self new
-    	initializeWithContext: aMethodContext;
-        yourself
-! !
-
-Object subclass: #ASTInterpreter
-	instanceVariableNames: 'currentNode context shouldReturn result'
-	package:'Compiler'!
-!ASTInterpreter commentStamp!
-ASTIntepreter is like a `NodeVisitor`, interpreting nodes one after each other.
-It is built using Continuation Passing Style for stepping purposes.
-
-Usage example:
-
-    | ast interpreter |
-    ast := Smalltalk current parse: 'foo 1+2+4'.
-    (SemanticAnalyzer on: Object) visit: ast.
-
-    ASTInterpreter new
-        interpret: ast nodes first;
-        result "Answers 7"!
-
-!ASTInterpreter methodsFor: '*Compiler'!
-
-context
-	^ context ifNil: [ context := AIContext new ]
-!
-
-context: anAIContext
-	context := anAIContext
-!
-
-currentNode
-	^ currentNode
-!
-
-result
-	^ result
-! !
-
-!ASTInterpreter methodsFor: '*Compiler'!
-
-initialize
-	super initialize.
-    shouldReturn := false
-! !
-
-!ASTInterpreter methodsFor: '*Compiler'!
-
-interpret: aNode
-	shouldReturn := false.
-    self interpret: aNode continue: [ :value |
-    	result := value ]
-!
-
-interpret: aNode continue: aBlock
-	shouldReturn ifTrue: [ ^ self ].
-
-	aNode isNode 
-    	ifTrue: [ 	
-        	currentNode := aNode.
-            self interpretNode: aNode continue: [ :value |
-  				self continue: aBlock value: value ] ]
-        ifFalse: [ self continue: aBlock value: aNode ]
-!
-
-interpretAssignmentNode: aNode continue: aBlock
-	self interpret: aNode right continue: [ :value |
-    	self 
-        	continue: aBlock
-            value: (self assign: aNode left to: value) ]
-!
-
-interpretBlockNode: aNode continue: aBlock
-	"TODO: Context should be set"
-    
-    self 
-    	continue: aBlock 
-        value: [ self interpret: aNode nodes first; result ]
-!
-
-interpretBlockSequenceNode: aNode continue: aBlock
-	self interpretSequenceNode: aNode continue: aBlock
-!
-
-interpretCascadeNode: aNode continue: aBlock
-	"TODO: Handle super sends"
-	
-    self interpret: aNode receiver continue: [ :receiver |
-		"Only interpret the receiver once"
-        aNode nodes do: [ :each | each receiver: receiver ].
-  
-    	self 
-        	interpretAll: aNode nodes allButLast
-    		continue: [
-              	self 
-                	interpret: aNode nodes last
-                	continue: [ :val | self continue: aBlock value: val ] ] ]
-!
-
-interpretClassReferenceNode: aNode continue: aBlock
-	self continue: aBlock value: (Smalltalk current at: aNode value)
-!
-
-interpretDynamicArrayNode: aNode continue: aBlock
-	self interpretAll: aNode nodes continue: [ :array |
-    	self 
-        	continue: aBlock
-			value: array ]
-!
-
-interpretDynamicDictionaryNode: aNode continue: aBlock
-    self interpretAll: aNode nodes continue: [ :array | | hashedCollection |
-    	hashedCollection := HashedCollection new.
-        array do: [ :each | hashedCollection add: each ].
-        self 	
-        	continue: aBlock
-            value: hashedCollection ]
-!
-
-interpretJSStatementNode: aNode continue: aBlock
-	shouldReturn := true.
-	self continue: aBlock value: (self eval: aNode source)
-!
-
-interpretMethodNode: aNode continue: aBlock
-	self interpretAll: aNode nodes continue: [ :array |
-    	self continue: aBlock value: array first ]
-!
-
-interpretNode: aNode continue: aBlock
-    aNode interpreter: self continue: aBlock
-!
-
-interpretReturnNode: aNode continue: aBlock
-    self interpret: aNode nodes first continue: [ :value |
-    	shouldReturn := true.
-		self continue: aBlock value: value ]
-!
-
-interpretSendNode: aNode continue: aBlock
-	"TODO: Handle super sends"
-    
-    self interpret: aNode receiver continue: [ :receiver |
-    	self interpretAll: aNode arguments continue: [ :args |
-    		self 
-            	messageFromSendNode: aNode 
-                arguments: args
-                do: [ :message |
-        			self context pc: self context pc + 1.
-        			self 
-            			continue: aBlock 
-                		value: (message sendTo: receiver) ] ] ]
-!
-
-interpretSequenceNode: aNode continue: aBlock
-	self interpretAll: aNode nodes continue: [ :array |
-    	self continue: aBlock value: array last ]
-!
-
-interpretValueNode: aNode continue: aBlock
-	self continue: aBlock value: aNode value
-!
-
-interpretVariableNode: aNode continue: aBlock
-    self 
-    	continue: aBlock
-        value: (aNode binding isInstanceVar
-			ifTrue: [ self context receiver instVarAt: aNode value ]
-			ifFalse: [ self context localAt: aNode value ])
-! !
-
-!ASTInterpreter methodsFor: '*Compiler'!
-
-assign: aNode to: anObject
-	^ aNode binding isInstanceVar 
-    	ifTrue: [ self context receiver instVarAt: aNode value put: anObject ]
-      	ifFalse: [ self context localAt: aNode value put: anObject ]
-!
-
-continue: aBlock value: anObject
-	result := anObject.
-    aBlock value: anObject
-!
-
-eval: aString
-	"Evaluate aString as JS source inside an JS function. 
-    aString is not sandboxed."
-    
-    | source function |
-    
-    source := String streamContents: [ :str |
-    	str nextPutAll: '(function('.
-        self context locals keys 
-        	do: [ :each | str nextPutAll: each ]
-          	separatedBy: [ str nextPutAll: ',' ].
-        str 
-        	nextPutAll: '){ return (function() {';
-        	nextPutAll: aString;
-            nextPutAll: '})() })' ].
-            
-	function := Compiler new eval: source.
-    
-	^ function valueWithPossibleArguments: self context locals values
-!
-
-interpretAll: aCollection continue: aBlock
-	self 
-    	interpretAll: aCollection 
-        continue: aBlock 
-        result: OrderedCollection new
-!
-
-interpretAll: nodes continue: aBlock result: aCollection
-	nodes isEmpty 
-    	ifTrue: [ self continue: aBlock value: aCollection ]
-    	ifFalse: [
-    		self interpret: nodes first continue: [:value |
-    			self 
-                	interpretAll: nodes allButFirst 
-                    continue: aBlock
-  					result: aCollection, { value } ] ]
-!
-
-messageFromSendNode: aSendNode arguments: aCollection do: aBlock
-    self 
-        continue: aBlock
-        value: (Message new
-    		selector: aSendNode selector;
-        	arguments: aCollection;
-        	yourself)
-! !
-
-!ASTInterpreter methodsFor: '*Compiler'!
-
-shouldReturn
-	^ shouldReturn ifNil: [ false ]
-! !
-
-ASTInterpreter subclass: #ASTSteppingInterpreter
-	instanceVariableNames: 'continuation nextNode'
-	package:'Compiler'!
-!ASTSteppingInterpreter commentStamp!
-ASTSteppingInterpreter is an interpreter with stepping capabilities.
-Use `#step` to actually interpret the next node.
-
-Usage example:
-
-    | ast interpreter |
-    ast := Smalltalk current parse: 'foo 1+2+4'.
-    (SemanticAnalyzer on: Object) visit: ast.
-
-    interpreter := ASTSteppingInterpreter new
-        interpret: ast nodes first;
-        yourself.
-        
-    debugger step; step.
-    debugger step; step.
-    debugger result."Answers 1"
-    debugger step.
-    debugger result. "Answers 3"
-    debugger step.
-    debugger result. "Answers 7"!
-
-!ASTSteppingInterpreter methodsFor: '*Compiler'!
-
-nextNode
-	^ nextNode
-! !
-
-!ASTSteppingInterpreter methodsFor: '*Compiler'!
-
-initialize
-	super initialize.
-    continuation := [  ]
-! !
-
-!ASTSteppingInterpreter methodsFor: '*Compiler'!
-
-interpret: aNode continue: aBlock
-	nextNode := aNode.
-	continuation := [ 
-    	super interpret: aNode continue: aBlock ]
-! !
-
-!ASTSteppingInterpreter methodsFor: '*Compiler'!
-
-step
-	continuation value
-! !
-
-!ASTSteppingInterpreter methodsFor: '*Compiler'!
-
-atEnd
-	^ self shouldReturn or: [ self nextNode == self currentNode ]
-! !
-
-!Node methodsFor: '*Compiler'!
-
-interpreter: anInterpreter continue: aBlock
-	^ anInterpreter interpretNode: self continue: aBlock
-!
-
-isSteppingNode
-	^ false
-! !
-
-!AssignmentNode methodsFor: '*Compiler'!
-
-interpreter: anInterpreter continue: aBlock
-	^ anInterpreter interpretAssignmentNode: self continue: aBlock
-!
-
-isSteppingNode
-	^ true
-! !
-
-!BlockNode methodsFor: '*Compiler'!
-
-interpreter: anInterpreter continue: aBlock
-	^ anInterpreter interpretBlockNode: self continue: aBlock
-!
-
-isSteppingNode
-	^ true
-! !
-
-!CascadeNode methodsFor: '*Compiler'!
-
-interpreter: anInterpreter continue: aBlock
-	^ anInterpreter interpretCascadeNode: self continue: aBlock
-! !
-
-!DynamicArrayNode methodsFor: '*Compiler'!
-
-interpreter: anInterpreter continue: aBlock
-	^ anInterpreter interpretDynamicArrayNode: self continue: aBlock
-!
-
-isSteppingNode
-	^ true
-! !
-
-!DynamicDictionaryNode methodsFor: '*Compiler'!
-
-interpreter: anInterpreter continue: aBlock
-	^ anInterpreter interpretDynamicDictionaryNode: self continue: aBlock
-!
-
-isSteppingNode
-	^ true
-! !
-
-!JSStatementNode methodsFor: '*Compiler'!
-
-interpreter: anInterpreter continue: aBlock
-	^ anInterpreter interpretJSStatementNode: self continue: aBlock
-!
-
-isSteppingNode
-	^ true
-! !
-
-!MethodNode methodsFor: '*Compiler'!
-
-interpreter: anInterpreter continue: aBlock
-	^ anInterpreter interpretMethodNode: self continue: aBlock
-! !
-
-!ReturnNode methodsFor: '*Compiler'!
-
-interpreter: anInterpreter continue: aBlock
-	^ anInterpreter interpretReturnNode: self continue: aBlock
-! !
-
-!SendNode methodsFor: '*Compiler'!
-
-interpreter: anInterpreter continue: aBlock
-	^ anInterpreter interpretSendNode: self continue: aBlock
-!
-
-isSteppingNode
-	^ true
-! !
-
-!SequenceNode methodsFor: '*Compiler'!
-
-interpreter: anInterpreter continue: aBlock
-	^ anInterpreter interpretSequenceNode: self continue: aBlock
-! !
-
-!BlockSequenceNode methodsFor: '*Compiler'!
-
-interpreter: anInterpreter continue: aBlock
-	^ anInterpreter interpretBlockSequenceNode: self continue: aBlock
-! !
-
-!ValueNode methodsFor: '*Compiler'!
-
-interpreter: anInterpreter continue: aBlock
-	^ anInterpreter interpretValueNode: self continue: aBlock
-! !
-
-!VariableNode methodsFor: '*Compiler'!
-
-interpreter: anInterpreter continue: aBlock
-	^ anInterpreter interpretVariableNode: self continue: aBlock
-! !
-
-!ClassReferenceNode methodsFor: '*Compiler'!
-
-interpreter: anInterpreter continue: aBlock
-	^ anInterpreter interpretClassReferenceNode: self continue: aBlock
-! !
-