Rename fletch -> dartino

pkg/dartino_compiler/lib/src/dartino_backend.dart

 // Copyright (c) 2015, the Dartino project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE.md file.
 
-library fletchc.fletch_backend;
+library dartino_compiler.dartino_backend;
 
 import 'dart:async' show
     Future;
 
 import 'dart:collection' show
     Queue;
 
 import 'package:compiler/src/common/backend_api.dart' show
     Backend,
     ImpactTransformer;
@@ skipping 81 matching lines @@
 
 import 'package:compiler/src/resolution/tree_elements.dart' show
     TreeElements;
 
 import 'package:compiler/src/library_loader.dart' show
     LibraryLoader;
 
 import 'package:persistent/persistent.dart' show
     PersistentMap;
 
-import 'fletch_function_builder.dart' show
-    FletchFunctionBuilder;
+import 'dartino_function_builder.dart' show
+    DartinoFunctionBuilder;
 
-import 'fletch_class_builder.dart' show
-    FletchClassBuilder;
+import 'dartino_class_builder.dart' show
+    DartinoClassBuilder;
 
-import 'fletch_system_builder.dart' show
-    FletchSystemBuilder;
+import 'dartino_system_builder.dart' show
+    DartinoSystemBuilder;
 
 import '../incremental_backend.dart' show
-    IncrementalFletchBackend;
+    IncrementalDartinoBackend;
 
-import 'fletch_enqueuer.dart' show
-    FletchEnqueueTask,
+import 'dartino_enqueuer.dart' show
+    DartinoEnqueueTask,
     shouldReportEnqueuingOfElement;
 
-import 'fletch_registry.dart' show
+import 'dartino_registry.dart' show
     ClosureKind,
-    FletchRegistry;
+    DartinoRegistry;
 
 import 'diagnostic.dart' show
    throwInternalError;
 
 import 'package:compiler/src/common/names.dart' show
     Identifiers,
     Names;
 
 import 'package:compiler/src/universe/world_impact.dart' show
     TransformedWorldImpact,
     WorldImpact,
     WorldImpactBuilder;
 
 import 'class_debug_info.dart';
 import 'codegen_visitor.dart';
 import 'debug_info.dart';
 import 'debug_info_constructor_codegen.dart';
 import 'debug_info_function_codegen.dart';
 import 'debug_info_lazy_field_initializer_codegen.dart';
-import 'fletch_context.dart';
-import 'fletch_selector.dart';
+import 'dartino_context.dart';
+import 'dartino_selector.dart';
 import 'function_codegen.dart';
 import 'lazy_field_initializer_codegen.dart';
 import 'constructor_codegen.dart';
 import 'closure_environment.dart';
 
 import '../bytecodes.dart';
 import '../vm_commands.dart';
-import '../fletch_system.dart';
+import '../dartino_system.dart';
 import 'package:compiler/src/common/resolution.dart';
 
-const FletchSystem BASE_FLETCH_SYSTEM = const FletchSystem(
-    const PersistentMap<int, FletchFunction>(),
-    const PersistentMap<Element, FletchFunction>(),
-    const PersistentMap<ConstructorElement, FletchFunction>(),
+const DartinoSystem BASE_DARTINO_SYSTEM = const DartinoSystem(
+    const PersistentMap<int, DartinoFunction>(),
+    const PersistentMap<Element, DartinoFunction>(),
+    const PersistentMap<ConstructorElement, DartinoFunction>(),
     const PersistentMap<int, int>(),
-    const PersistentMap<int, FletchClass>(),
-    const PersistentMap<ClassElement, FletchClass>(),
-    const PersistentMap<int, FletchConstant>(),
-    const PersistentMap<ConstantValue, FletchConstant>(),
+    const PersistentMap<int, DartinoClass>(),
+    const PersistentMap<ClassElement, DartinoClass>(),
+    const PersistentMap<int, DartinoConstant>(),
+    const PersistentMap<ConstantValue, DartinoConstant>(),
     const PersistentMap<int, String>(),
     const PersistentMap<int, int>(),
     const PersistentMap<int, int>(),
-    const PersistentMap<ParameterStubSignature, FletchFunction>());
+    const PersistentMap<ParameterStubSignature, DartinoFunction>());
 
-class FletchBackend extends Backend
-    implements IncrementalFletchBackend {
+class DartinoBackend extends Backend
+    implements IncrementalDartinoBackend {
   static const String growableListName = '_GrowableList';
   static const String constantListName = '_ConstantList';
   static const String constantByteListName = '_ConstantByteList';
   static const String constantMapName = '_ConstantMap';
-  static const String fletchNoSuchMethodErrorName = 'FletchNoSuchMethodError';
+  static const String dartinoNoSuchMethodErrorName = 'DartinoNoSuchMethodError';
   static const String noSuchMethodName = '_noSuchMethod';
   static const String noSuchMethodTrampolineName = '_noSuchMethodTrampoline';
 
-  final FletchContext context;
+  final DartinoContext context;
 
   final DartConstantTask constantCompilerTask;
 
   /// Constructors that need to have an initilizer compiled. See
   /// [compilePendingConstructorInitializers].
-  final Queue<FletchFunctionBuilder> pendingConstructorInitializers =
-      new Queue<FletchFunctionBuilder>();
+  final Queue<DartinoFunctionBuilder> pendingConstructorInitializers =
+      new Queue<DartinoFunctionBuilder>();
 
   final Set<FunctionElement> externals = new Set<FunctionElement>();
 
   // TODO(ahe): This should be queried from World.
   final Map<ClassElement, Set<ClassElement>> directSubclasses =
       <ClassElement, Set<ClassElement>>{};
 
-  /// Set of classes that have special meaning to the Fletch VM. They're
+  /// Set of classes that have special meaning to the Dartino VM. They're
   /// created using [PushBuiltinClass] instead of [PushNewClass].
-  // TODO(ahe): Move this to FletchSystem?
+  // TODO(ahe): Move this to DartinoSystem?
   final Set<ClassElement> builtinClasses = new Set<ClassElement>();
 
-  // TODO(ahe): This should be invalidated by a new [FletchSystem].
+  // TODO(ahe): This should be invalidated by a new [DartinoSystem].
   final Map<MemberElement, ClosureEnvironment> closureEnvironments =
       <MemberElement, ClosureEnvironment>{};
 
-  // TODO(ahe): This should be moved to [FletchSystem].
-  final Map<FunctionElement, FletchClassBuilder> closureClasses =
-      <FunctionElement, FletchClassBuilder>{};
+  // TODO(ahe): This should be moved to [DartinoSystem].
+  final Map<FunctionElement, DartinoClassBuilder> closureClasses =
+      <FunctionElement, DartinoClassBuilder>{};
 
-  // TODO(ahe): This should be moved to [FletchSystem].
-  final Map<FieldElement, FletchFunctionBuilder> lazyFieldInitializers =
-      <FieldElement, FletchFunctionBuilder>{};
+  // TODO(ahe): This should be moved to [DartinoSystem].
+  final Map<FieldElement, DartinoFunctionBuilder> lazyFieldInitializers =
+      <FieldElement, DartinoFunctionBuilder>{};
 
-  // TODO(ahe): This should be moved to [FletchSystem].
-  Map<FletchClassBuilder, FletchFunctionBuilder> tearoffFunctions;
+  // TODO(ahe): This should be moved to [DartinoSystem].
+  Map<DartinoClassBuilder, DartinoFunctionBuilder> tearoffFunctions;
 
-  FletchCompilerImplementation get compiler => super.compiler;
+  DartinoCompilerImplementation get compiler => super.compiler;
 
-  LibraryElement fletchSystemLibrary;
-  LibraryElement fletchFFILibrary;
+  LibraryElement dartinoSystemLibrary;
+  LibraryElement dartinoFFILibrary;
   LibraryElement collectionLibrary;
   LibraryElement mathLibrary;
   LibraryElement get asyncLibrary => compiler.asyncLibrary;
-  LibraryElement fletchLibrary;
+  LibraryElement dartinoLibrary;
 
-  FunctionElement fletchSystemEntry;
+  FunctionElement dartinoSystemEntry;
 
-  FunctionElement fletchExternalInvokeMain;
+  FunctionElement dartinoExternalInvokeMain;
 
-  FunctionElement fletchExternalYield;
+  FunctionElement dartinoExternalYield;
 
-  FunctionElement fletchExternalNativeError;
+  FunctionElement dartinoExternalNativeError;
 
-  FunctionElement fletchExternalCoroutineChange;
+  FunctionElement dartinoExternalCoroutineChange;
 
-  FunctionElement fletchUnresolved;
-  FunctionElement fletchCompileError;
+  FunctionElement dartinoUnresolved;
+  FunctionElement dartinoCompileError;
 
-  FletchClassBuilder compiledObjectClass;
+  DartinoClassBuilder compiledObjectClass;
 
   ClassElement smiClass;
   ClassElement mintClass;
   ClassElement growableListClass;
-  ClassElement fletchNoSuchMethodErrorClass;
+  ClassElement dartinoNoSuchMethodErrorClass;
   ClassElement bigintClass;
   ClassElement uint32DigitsClass;
 
-  FletchClassBuilder compiledClosureClass;
+  DartinoClassBuilder compiledClosureClass;
 
   /// Holds a reference to the class Coroutine if it exists.
   ClassElement coroutineClass;
 
-  FletchSystemBuilder systemBuilder;
+  DartinoSystemBuilder systemBuilder;
 
   final Set<FunctionElement> alwaysEnqueue = new Set<FunctionElement>();
 
-  FletchImpactTransformer impactTransformer;
+  DartinoImpactTransformer impactTransformer;
 
-  FletchBackend(FletchCompilerImplementation compiler)
+  DartinoBackend(DartinoCompilerImplementation compiler)
       : this.context = compiler.context,
         this.constantCompilerTask = new DartConstantTask(compiler),
-        this.systemBuilder = new FletchSystemBuilder(BASE_FLETCH_SYSTEM),
+        this.systemBuilder = new DartinoSystemBuilder(BASE_DARTINO_SYSTEM),
         super(compiler) {
-    this.impactTransformer = new FletchImpactTransformer(this);
+    this.impactTransformer = new DartinoImpactTransformer(this);
   }
 
-  void newSystemBuilder(FletchSystem predecessorSystem) {
-    systemBuilder = new FletchSystemBuilder(predecessorSystem);
+  void newSystemBuilder(DartinoSystem predecessorSystem) {
+    systemBuilder = new DartinoSystemBuilder(predecessorSystem);
   }
 
-  FletchClassBuilder registerClassElement(ClassElement element) {
+  DartinoClassBuilder registerClassElement(ClassElement element) {
     if (element == null) return null;
     assert(element.isDeclaration);
 
-    FletchClassBuilder classBuilder =
+    DartinoClassBuilder classBuilder =
         systemBuilder.lookupClassBuilderByElement(element);
     if (classBuilder != null) return classBuilder;
 
     directSubclasses[element] = new Set<ClassElement>();
-    FletchClassBuilder superclass = registerClassElement(element.superclass);
+    DartinoClassBuilder superclass = registerClassElement(element.superclass);
     if (superclass != null) {
       Set<ClassElement> subclasses = directSubclasses[element.superclass];
       subclasses.add(element);
     }
     classBuilder = systemBuilder.newClassBuilder(
         element, superclass, builtinClasses.contains(element));
 
-    // TODO(ajohnsen): Currently, the FletchRegistry does not enqueue fields.
+    // TODO(ajohnsen): Currently, the DartinoRegistry does not enqueue fields.
     // This is a workaround, where we basically add getters for all fields.
     classBuilder.updateImplicitAccessors(this);
 
     Element callMember = element.lookupLocalMember(Identifiers.call);
     if (callMember != null && callMember.isFunction) {
       FunctionElement function = callMember;
       classBuilder.createIsFunctionEntry(
           this, function.functionSignature.parameterCount);
     }
     return classBuilder;
   }
 
-  FletchClassBuilder createCallableStubClass(
-      int fields, int arity, FletchClassBuilder superclass) {
-    FletchClassBuilder classBuilder = systemBuilder.newClassBuilder(
+  DartinoClassBuilder createCallableStubClass(
+      int fields, int arity, DartinoClassBuilder superclass) {
+    DartinoClassBuilder classBuilder = systemBuilder.newClassBuilder(
         null, superclass, false, extraFields: fields);
     classBuilder.createIsFunctionEntry(this, arity);
     return classBuilder;
   }
 
   List<CompilerTask> get tasks => <CompilerTask>[];
 
   ConstantSystem get constantSystem {
     return constantCompilerTask.constantCompiler.constantSystem;
   }
 
   BackendConstantEnvironment get constants => constantCompilerTask;
 
   bool classNeedsRti(ClassElement cls) => false;
 
   bool methodNeedsRti(FunctionElement function) => false;
 
   void enqueueHelpers(ResolutionEnqueuer world, Registry incomingRegistry) {
-    FletchRegistry registry = new FletchRegistry(compiler);
+    DartinoRegistry registry = new DartinoRegistry(compiler);
     compiler.patchAnnotationClass = patchAnnotationClass;
 
     bool hasMissingHelpers = false;
     loadHelperMethods((String name) {
-      LibraryElement library = fletchSystemLibrary;
+      LibraryElement library = dartinoSystemLibrary;
       Element helper = library.findLocal(name);
       // TODO(ahe): Make it cleaner.
       if (helper != null && helper.isAbstractField) {
         AbstractFieldElement abstractField = helper;
         helper = abstractField.getter;
       }
       if (helper == null) {
         hasMissingHelpers = true;
         compiler.reporter.reportErrorMessage(
             library, MessageKind.GENERIC,
             {'text': "Required implementation method '$name' not found."});
       }
       return helper;
     });
     if (hasMissingHelpers) {
       throwInternalError(
           "Some implementation methods are missing, see details above");
     }
     world.registerStaticUse(
-        new StaticUse.staticInvoke(fletchCompileError, CallStructure.ONE_ARG));
+        new StaticUse.staticInvoke(dartinoCompileError, CallStructure.ONE_ARG));
     world.registerStaticUse(
-        new StaticUse.staticInvoke(fletchSystemEntry, CallStructure.ONE_ARG));
+        new StaticUse.staticInvoke(dartinoSystemEntry, CallStructure.ONE_ARG));
     world.registerStaticUse(
-        new StaticUse.staticInvoke(fletchUnresolved, CallStructure.ONE_ARG));
+        new StaticUse.staticInvoke(dartinoUnresolved, CallStructure.ONE_ARG));
 
     loadHelperClasses((
         String name,
         LibraryElement library,
         {bool builtin: false}) {
       var classImpl = library.findLocal(name);
       if (classImpl == null) classImpl = library.implementation.find(name);
       if (classImpl == null) {
         compiler.reporter.reportErrorMessage(
             library, MessageKind.GENERIC,
@@ skipping 53 matching lines @@
 
   void loadHelperMethods(
       FunctionElement findHelper(String name)) {
 
     FunctionElement findExternal(String name) {
       FunctionElement helper = findHelper(name);
       if (helper != null) externals.add(helper);
       return helper;
     }
 
-    fletchSystemEntry = findHelper('entry');
-    fletchExternalInvokeMain = findExternal('invokeMain');
-    fletchExternalYield = findExternal('yield');
-    fletchExternalCoroutineChange = findExternal('coroutineChange');
-    fletchExternalNativeError = findExternal('nativeError');
-    fletchUnresolved = findExternal('unresolved');
-    fletchCompileError = findExternal('compileError');
+    dartinoSystemEntry = findHelper('entry');
+    dartinoExternalInvokeMain = findExternal('invokeMain');
+    dartinoExternalYield = findExternal('yield');
+    dartinoExternalCoroutineChange = findExternal('coroutineChange');
+    dartinoExternalNativeError = findExternal('nativeError');
+    dartinoUnresolved = findExternal('unresolved');
+    dartinoCompileError = findExternal('compileError');
   }
 
   void loadHelperClasses(
-      FletchClassBuilder loadClass(
+      DartinoClassBuilder loadClass(
           String name,
           LibraryElement library,
           {bool builtin})) {
     compiledObjectClass =
         loadClass("Object", compiler.coreLibrary, builtin: true);
     compiledClosureClass =
         loadClass("_TearOffClosure", compiler.coreLibrary, builtin: true);
     smiClass = loadClass("_Smi", compiler.coreLibrary, builtin: true)?.element;
     mintClass =
         loadClass("_Mint", compiler.coreLibrary, builtin: true)?.element;
     loadClass("_OneByteString", compiler.coreLibrary, builtin: true);
     loadClass("_TwoByteString", compiler.coreLibrary, builtin: true);
     // TODO(ahe): Register _ConstantList through ResolutionCallbacks.
-    loadClass(constantListName, fletchSystemLibrary, builtin: true);
-    loadClass(constantByteListName, fletchSystemLibrary, builtin: true);
-    loadClass(constantMapName, fletchSystemLibrary, builtin: true);
+    loadClass(constantListName, dartinoSystemLibrary, builtin: true);
+    loadClass(constantByteListName, dartinoSystemLibrary, builtin: true);
+    loadClass(constantMapName, dartinoSystemLibrary, builtin: true);
     loadClass("_DoubleImpl", compiler.coreLibrary, builtin: true);
     loadClass("Null", compiler.coreLibrary, builtin: true);
     loadClass("bool", compiler.coreLibrary, builtin: true);
     loadClass("StackOverflowError", compiler.coreLibrary, builtin: true);
-    loadClass("Port", fletchLibrary, builtin: true);
-    loadClass("Process", fletchLibrary, builtin: true);
-    loadClass("ProcessDeath", fletchLibrary, builtin: true);
-    loadClass("ForeignMemory", fletchFFILibrary, builtin: true);
+    loadClass("Port", dartinoLibrary, builtin: true);
+    loadClass("Process", dartinoLibrary, builtin: true);
+    loadClass("ProcessDeath", dartinoLibrary, builtin: true);
+    loadClass("ForeignMemory", dartinoFFILibrary, builtin: true);
     if (context.enableBigint) {
       bigintClass = loadClass("_Bigint", compiler.coreLibrary)?.element;
       uint32DigitsClass =
           loadClass("_Uint32Digits", compiler.coreLibrary)?.element;
     }
     growableListClass =
-        loadClass(growableListName, fletchSystemLibrary)?.element;
-    fletchNoSuchMethodErrorClass =
-        loadClass(fletchNoSuchMethodErrorName,
-                  fletchSystemLibrary,
+        loadClass(growableListName, dartinoSystemLibrary)?.element;
+    dartinoNoSuchMethodErrorClass =
+        loadClass(dartinoNoSuchMethodErrorName,
+                  dartinoSystemLibrary,
                   builtin: true)?.element;
 
     // This class is optional.
-    coroutineClass = fletchSystemLibrary.implementation.find("Coroutine");
+    coroutineClass = dartinoSystemLibrary.implementation.find("Coroutine");
     if (coroutineClass != null) {
       coroutineClass.ensureResolved(compiler.resolution);
     }
   }
 
   void onElementResolved(Element element, TreeElements elements) {
     if (alwaysEnqueue.contains(element)) {
-      var registry = new FletchRegistry(compiler);
+      var registry = new DartinoRegistry(compiler);
       if (element.isStatic || element.isTopLevel) {
         registry.registerStaticUse(new StaticUse.foreignUse(element));
       } else {
         registry.registerDynamicUse(new Selector.fromElement(element));
       }
     }
   }
 
   ClassElement get intImplementation => smiClass;
 
   /// Class of annotations to mark patches in patch files.
   ///
   /// The patch parser (pkg/compiler/lib/src/patch_parser.dart). The patch
   /// parser looks for an annotation on the form "@patch", where "patch" is
   /// compile-time constant instance of [patchAnnotationClass].
   ClassElement get patchAnnotationClass {
     // TODO(ahe): Introduce a proper constant class to identify constants. For
-    // now, we simply put "const patch = "patch";" in fletch._system.
+    // now, we simply put "const patch = "patch";" in dartino._system.
     return super.stringImplementation;
   }
 
-  FletchClassBuilder createClosureClass(
+  DartinoClassBuilder createClosureClass(
       FunctionElement closure,
       ClosureEnvironment closureEnvironment) {
     return closureClasses.putIfAbsent(closure, () {
       ClosureInfo info = closureEnvironment.closures[closure];
       int fields = info.free.length;
       if (info.isThisFree) fields++;
       return createCallableStubClass(
           fields,
           closure.functionSignature.parameterCount,
           compiledClosureClass);
     });
   }
 
   /**
    * Create a tearoff class for function [function].
    *
    * The class will have one method named 'call', accepting the same arguments
    * as [function]. The method will load the arguments received and statically
    * call [function] (essential a tail-call).
    *
    * If [function] is an instance member, the class will have one field, the
    * instance.
    */
-  FletchClassBuilder createTearoffClass(FletchFunctionBase function) {
-    FletchClassBuilder tearoffClass =
+  DartinoClassBuilder createTearoffClass(DartinoFunctionBase function) {
+    DartinoClassBuilder tearoffClass =
         systemBuilder.getTearoffClassBuilder(function, compiledClosureClass);
     if (tearoffClass != null) return tearoffClass;
     FunctionSignature signature = function.signature;
     bool hasThis = function.isInstanceMember;
     tearoffClass = createCallableStubClass(
         hasThis ? 1 : 0,
         signature.parameterCount,
         compiledClosureClass);
 
-    FletchFunctionBuilder functionBuilder =
+    DartinoFunctionBuilder functionBuilder =
         systemBuilder.newTearOff(function, tearoffClass.classId);
 
     BytecodeAssembler assembler = functionBuilder.assembler;
     int argumentCount = signature.parameterCount;
     if (hasThis) {
       argumentCount++;
       // If the tearoff has a 'this' value, load it. It's the only field
       // in the tearoff class.
       assembler
           ..loadParameter(0)
           ..loadField(0);
     }
     for (int i = 0; i < signature.parameterCount; i++) {
       // The closure-class is at parameter index 0, so argument i is at
       // i + 1.
       assembler.loadParameter(i + 1);
     }
     int constId = functionBuilder.allocateConstantFromFunction(
         function.functionId);
     // TODO(ajohnsen): Create a tail-call bytecode, so we don't have to
     // load all the arguments.
     assembler
         ..invokeStatic(constId, argumentCount)
         ..ret()
         ..methodEnd();
 
     String symbol = context.getCallSymbol(signature);
     int id = context.getSymbolId(symbol);
-    int fletchSelector = FletchSelector.encodeMethod(
+    int dartinoSelector = DartinoSelector.encodeMethod(
         id,
         signature.parameterCount);
-    tearoffClass.addToMethodTable(fletchSelector, functionBuilder);
+    tearoffClass.addToMethodTable(dartinoSelector, functionBuilder);
 
     if (!function.isInstanceMember) return tearoffClass;
 
     ClassElement classElement =
         systemBuilder.lookupClassBuilder(function.memberOf).element;
     if (classElement == null) return tearoffClass;
 
     // Create == function that tests for equality.
-    int isSelector = context.toFletchTearoffIsSelector(
+    int isSelector = context.toDartinoTearoffIsSelector(
         function.name,
         classElement);
     tearoffClass.addIsSelector(isSelector);
 
-    FletchFunctionBuilder equal = systemBuilder.newFunctionBuilder(
-        FletchFunctionKind.NORMAL,
+    DartinoFunctionBuilder equal = systemBuilder.newFunctionBuilder(
+        DartinoFunctionKind.NORMAL,
         2);
 
     BytecodeLabel isFalse = new BytecodeLabel();
     equal.assembler
       // First test for class. This ensures it's the exact function that
       // we expect.
       ..loadParameter(1)
       ..invokeTest(isSelector, 0)
       ..branchIfFalse(isFalse)
       // Then test that the receiver is identical.
       ..loadParameter(0)
       ..loadField(0)
       ..loadParameter(1)
       ..loadField(0)
       ..identicalNonNumeric()
       ..branchIfFalse(isFalse)
       ..loadLiteralTrue()
       ..ret()
       ..bind(isFalse)
       ..loadLiteralFalse()
       ..ret()
       ..methodEnd();
 
     id = context.getSymbolId("==");
-    int equalsSelector = FletchSelector.encodeMethod(id, 1);
+    int equalsSelector = DartinoSelector.encodeMethod(id, 1);
     tearoffClass.addToMethodTable(equalsSelector, equal);
 
     // Create hashCode getter. We simply add the object hashCode and the
     // method id of the tearoff'ed function.
-    FletchFunctionBuilder hashCode = systemBuilder.newFunctionBuilder(
-        FletchFunctionKind.ACCESSOR,
+    DartinoFunctionBuilder hashCode = systemBuilder.newFunctionBuilder(
+        DartinoFunctionKind.ACCESSOR,
         1);
 
-    int hashCodeSelector = FletchSelector.encodeGetter(
+    int hashCodeSelector = DartinoSelector.encodeGetter(
         context.getSymbolId("hashCode"));
 
     // TODO(ajohnsen): Use plus, we plus is always enqueued. Consider using
     // xor when we have a way to enqueue it from here.
-    int plusSelector = FletchSelector.encodeMethod(
+    int plusSelector = DartinoSelector.encodeMethod(
         context.getSymbolId("+"), 1);
 
     hashCode.assembler
       ..loadParameter(0)
       ..loadField(0)
       ..invokeMethod(hashCodeSelector, 0)
       ..loadLiteral(function.functionId)
       ..invokeMethod(plusSelector, 1)
       ..ret()
       ..methodEnd();
 
     tearoffClass.addToMethodTable(hashCodeSelector, hashCode);
 
     return tearoffClass;
   }
 
-  FletchFunctionBase getFunctionForElement(FunctionElement element) {
+  DartinoFunctionBase getFunctionForElement(FunctionElement element) {
     assert(element.memberContext == element);
 
-    FletchFunctionBase function =
+    DartinoFunctionBase function =
         systemBuilder.lookupFunctionByElement(element);
     if (function != null) return function;
 
-    return createFletchFunctionBuilder(element);
+    return createDartinoFunctionBuilder(element);
   }
 
   /// Get the constructor initializer function for [constructor]. The function
   /// will be created the first time it's called for [constructor].
   ///
   /// See [compilePendingConstructorInitializers] for an overview of
   /// constructor intializers and constructor bodies.
-  FletchFunctionBase getConstructorInitializerFunction(
+  DartinoFunctionBase getConstructorInitializerFunction(
       ConstructorElement constructor) {
     assert(constructor.isDeclaration);
     constructor = constructor.implementation;
-    FletchFunctionBase base =
+    DartinoFunctionBase base =
         systemBuilder.lookupConstructorInitializerByElement(constructor);
     if (base != null) return base;
 
-    FletchFunctionBuilder builder = systemBuilder.newConstructorInitializer(
+    DartinoFunctionBuilder builder = systemBuilder.newConstructorInitializer(
         constructor);
     pendingConstructorInitializers.addFirst(builder);
 
     return builder;
   }
 
-  FletchFunctionBuilder createFletchFunctionBuilder(FunctionElement function) {
+  DartinoFunctionBuilder createDartinoFunctionBuilder(FunctionElement function) {
     assert(function.memberContext == function);
 
-    FletchClassBuilder holderClass;
+    DartinoClassBuilder holderClass;
     if (function.isInstanceMember || function.isGenerativeConstructor) {
       ClassElement enclosingClass = function.enclosingClass.declaration;
       holderClass = registerClassElement(enclosingClass);
     }
-    return internalCreateFletchFunctionBuilder(
+    return internalCreateDartinoFunctionBuilder(
         function,
         function.name,
         holderClass);
   }
 
-  FletchFunctionBuilder internalCreateFletchFunctionBuilder(
+  DartinoFunctionBuilder internalCreateDartinoFunctionBuilder(
       FunctionElement function,
       String name,
-      FletchClassBuilder holderClass) {
-    FletchFunctionBuilder functionBuilder =
+      DartinoClassBuilder holderClass) {
+    DartinoFunctionBuilder functionBuilder =
         systemBuilder.lookupFunctionBuilderByElement(function.declaration);
     if (functionBuilder != null) return functionBuilder;
 
     FunctionTypedElement implementation = function.implementation;
     int memberOf = holderClass != null ? holderClass.classId : null;
     return systemBuilder.newFunctionBuilderWithSignature(
         name,
         function,
         // Parameter initializers are expressed in the potential
         // implementation.
         implementation.functionSignature,
         memberOf,
         kind: function.isAccessor
-            ? FletchFunctionKind.ACCESSOR
-            : FletchFunctionKind.NORMAL,
+            ? DartinoFunctionKind.ACCESSOR
+            : DartinoFunctionKind.NORMAL,
         mapByElement: function.declaration);
   }
 
-  ClassDebugInfo createClassDebugInfo(FletchClass klass) {
+  ClassDebugInfo createClassDebugInfo(DartinoClass klass) {
     return new ClassDebugInfo(klass);
   }
 
   DebugInfo createDebugInfo(
-      FletchFunction function,
-      FletchSystem currentSystem) {
+      DartinoFunction function,
+      DartinoSystem currentSystem) {
     DebugInfo debugInfo = new DebugInfo(function);
     AstElement element = function.element;
     if (element == null) return debugInfo;
     List<Bytecode> expectedBytecodes = function.bytecodes;
     element = element.implementation;
     TreeElements elements = element.resolvedAst.elements;
     ClosureEnvironment closureEnvironment = createClosureEnvironment(
         element,
         elements);
     CodegenVisitor codegen;
-    FletchFunctionBuilder builder =
-        new FletchFunctionBuilder.fromFletchFunction(function);
+    DartinoFunctionBuilder builder =
+        new DartinoFunctionBuilder.fromDartinoFunction(function);
     if (function.isLazyFieldInitializer) {
       codegen = new DebugInfoLazyFieldInitializerCodegen(
           debugInfo,
           builder,
           context,
           elements,
           closureEnvironment,
           element,
           compiler);
     } else if (function.isInitializerList) {
       ClassElement enclosingClass = element.enclosingClass;
       // TODO(ajohnsen): Don't depend on the class builder.
-      FletchClassBuilder classBuilder =
+      DartinoClassBuilder classBuilder =
           systemBuilder.lookupClassBuilderByElement(enclosingClass.declaration);
       codegen = new DebugInfoConstructorCodegen(
           debugInfo,
           builder,
           context,
           elements,
           closureEnvironment,
           element,
           classBuilder,
           compiler);
@@ skipping 25 matching lines @@
       throw 'Debug info code different from running code.';
     }
     return debugInfo;
   }
 
   codegen(_) {
     new UnsupportedError(
         "Method [codegen] not supported, use [compileElement] instead");
   }
 
-  /// Invoked by [FletchEnqueuer] once per element that needs to be compiled.
+  /// Invoked by [DartinoEnqueuer] once per element that needs to be compiled.
   ///
   /// This is used to generate the bytecodes for [declaration].
   void compileElement(
       AstElement declaration,
       TreeElements treeElements,
-      FletchRegistry registry) {
+      DartinoRegistry registry) {
     AstElement element = declaration.implementation;
     compiler.reporter.withCurrentElement(element, () {
       assert(declaration.isDeclaration);
       context.compiler.reportVerboseInfo(element, 'Compiling $element');
       if (element.isFunction ||
           element.isGetter ||
           element.isSetter ||
           element.isGenerativeConstructor ||
           element.isFactoryConstructor) {
         // For a generative constructor, this means compile the constructor
         // body. See [compilePendingConstructorInitializers] for an overview of
         // how constructor initializers and constructor bodies are compiled.
         codegenFunction(element, treeElements, registry);
       } else if (element.isField) {
         context.compiler.reportVerboseInfo(
             element, "Asked to compile a field, but don't know how");
       } else {
         compiler.reporter.internalError(
             element, "Uninimplemented element kind: ${element.kind}");
       }
     });
   }
 
-  /// Invoked by [FletchEnqueuer] once per [selector] that may invoke
+  /// Invoked by [DartinoEnqueuer] once per [selector] that may invoke
   /// [declaration].
   ///
   /// This is used to generate stubs for [declaration].
   void compileElementUsage(
       AstElement declaration,
       Selector selector,
       TreeElements treeElements,
-      FletchRegistry registry) {
+      DartinoRegistry registry) {
     AstElement element = declaration.implementation;
     compiler.reporter.withCurrentElement(element, () {
       assert(declaration.isDeclaration);
       context.compiler.reportVerboseInfo(element, 'Compiling $element');
       if (!element.isInstanceMember && !isLocalFunction(element)) {
         // No stub needed. Optional arguments are handled at call-site.
       } else if (element.isFunction) {
-        FletchFunctionBase function =
+        DartinoFunctionBase function =
             systemBuilder.lookupFunctionByElement(element.declaration);
         CallStructure callStructure = selector.callStructure;
         FunctionSignature signature = function.signature;
         if (selector.isGetter) {
           if (shouldReportEnqueuingOfElement(compiler, element)) {
             context.compiler.reportVerboseInfo(
                 element, 'Adding tear-off stub');
           }
           createTearoffGetterForFunction(
               function, isSpecialCallMethod: element.name == "call");
         } else if (selector.isCall &&
                    callStructure.signatureApplies(signature) &&
                    !isExactParameterMatch(signature, callStructure)) {
           if (shouldReportEnqueuingOfElement(compiler, element)) {
             context.compiler.reportVerboseInfo(
                 element, 'Adding stub for $selector');
           }
-          FletchFunctionBase stub = createParameterStub(function, selector);
+          DartinoFunctionBase stub = createParameterStub(function, selector);
           patchClassWithStub(
               stub, selector, function.memberOf, isLocalFunction(element));
         }
       } else if (element.isGetter || element.isSetter) {
         // No stub needed. If a getter returns a closure, the VM's
         // no-such-method handling will do the right thing.
       } else {
         context.compiler.reportVerboseInfo(
             element, "Asked to compile this, but don't know how");
       }
     });
   }
 
-  /// Invoked by [FletchEnqueuer] once per `call` [selector] that may invoke
+  /// Invoked by [DartinoEnqueuer] once per `call` [selector] that may invoke
   /// [declaration] as an implicit closure (for example, a tear-off).
   ///
   /// This is used to generate parameter stubs for the closures.
   void compileClosurizationUsage(
       AstElement declaration,
       Selector selector,
       TreeElements treeElements,
-      FletchRegistry registry,
+      DartinoRegistry registry,
       ClosureKind kind) {
     AstElement element = declaration.implementation;
     compiler.reporter.withCurrentElement(element, () {
       assert(declaration.isDeclaration);
       if (shouldReportEnqueuingOfElement(compiler, element)) {
         context.compiler.reportVerboseInfo(
             element, 'Need tear-off parameter stub $selector');
       }
-      FletchFunctionBase function =
+      DartinoFunctionBase function =
           systemBuilder.lookupFunctionByElement(element.declaration);
       if (function == null) {
         compiler.reporter.internalError(
-            element, "Has no fletch function, but used as tear-off");
+            element, "Has no dartino function, but used as tear-off");
       }
       if (selector.isGetter) {
         // This is a special tear-off getter.
 
         // TODO(ahe): This code should probably use [kind] to detect the
         // various cases instead of [isLocalFunction] and looking at names.
 
         assert(selector.memberName == Names.CALL_NAME);
         if (isLocalFunction(element) ||
             memberName(element) == Names.CALL_NAME) {
@@ skipping 34 matching lines @@
           // doesn't have a stub.
           break;
 
         case ClosureKind.functionLike:
         case ClosureKind.functionLikeTearOff:
           compiler.reporter.internalError(element, "Unimplemented: $kind");
           break;
       }
 
       if (!isExactParameterMatch(function.signature, selector.callStructure)) {
-        FletchFunctionBase stub  = createParameterStub(function, selector);
+        DartinoFunctionBase stub  = createParameterStub(function, selector);
         patchClassWithStub(stub, selector, function.memberOf, true);
       }
     });
   }
 
   void codegenFunction(
       FunctionElement function,
       TreeElements elements,
-      FletchRegistry registry) {
-    registry.registerStaticUse(new StaticUse.foreignUse(fletchSystemEntry));
+      DartinoRegistry registry) {
+    registry.registerStaticUse(new StaticUse.foreignUse(dartinoSystemEntry));
 
     ClosureEnvironment closureEnvironment = createClosureEnvironment(
         function,
         elements);
 
-    FletchFunctionBuilder functionBuilder;
+    DartinoFunctionBuilder functionBuilder;
 
     if (function.memberContext != function) {
-      functionBuilder = internalCreateFletchFunctionBuilder(
+      functionBuilder = internalCreateDartinoFunctionBuilder(
           function,
           Identifiers.call,
           createClosureClass(function, closureEnvironment));
     } else {
-      functionBuilder = createFletchFunctionBuilder(function);
+      functionBuilder = createDartinoFunctionBuilder(function);
     }
 
     FunctionCodegen codegen = new FunctionCodegen(
         functionBuilder,
         context,
         elements,
         registry,
         closureEnvironment,
         function);
 
@@ skipping 11 matching lines @@
       // them into the method table.
       String symbol = context.getSymbolForFunction(
           functionBuilder.name,
           function.functionSignature,
           function.library);
       int id = context.getSymbolId(symbol);
       int arity = function.functionSignature.parameterCount;
       SelectorKind kind = SelectorKind.Method;
       if (function.isGetter) kind = SelectorKind.Getter;
       if (function.isSetter) kind = SelectorKind.Setter;
-      int fletchSelector = FletchSelector.encode(id, kind, arity);
-      FletchClassBuilder classBuilder =
+      int dartinoSelector = DartinoSelector.encode(id, kind, arity);
+      DartinoClassBuilder classBuilder =
           systemBuilder.lookupClassBuilder(functionBuilder.memberOf);
-      classBuilder.addToMethodTable(fletchSelector, functionBuilder);
+      classBuilder.addToMethodTable(dartinoSelector, functionBuilder);
       // Inject method into all mixin usages.
       getMixinApplicationsOfClass(classBuilder).forEach((ClassElement usage) {
-        FletchClassBuilder compiledUsage = registerClassElement(usage);
-        compiledUsage.addToMethodTable(fletchSelector, functionBuilder);
+        DartinoClassBuilder compiledUsage = registerClassElement(usage);
+        compiledUsage.addToMethodTable(dartinoSelector, functionBuilder);
       });
     }
 
     if (compiler.verbose) {
       context.compiler.reportVerboseInfo(
           function, functionBuilder.verboseToString());
     }
   }
 
-  List<ClassElement> getMixinApplicationsOfClass(FletchClassBuilder builder) {
+  List<ClassElement> getMixinApplicationsOfClass(DartinoClassBuilder builder) {
     ClassElement element = builder.element;
     if (element == null) return [];
     List<ClassElement> mixinUsage =
         compiler.world.mixinUsesOf(element).toList();
     for (int i = 0; i < mixinUsage.length; i++) {
       ClassElement usage = mixinUsage[i];
       // Recursively add mixin-usage of the current 'usage'.
       assert(!compiler.world.mixinUsesOf(usage).any(mixinUsage.contains));
       mixinUsage.addAll(compiler.world.mixinUsesOf(usage));
     }
     return mixinUsage;
   }
 
   void codegenNativeFunction(
       FunctionElement function,
       FunctionCodegen codegen) {
     String name = '.${function.name}';
 
     ClassElement enclosingClass = function.enclosingClass;
     if (enclosingClass != null) name = '${enclosingClass.name}$name';
 
-    FletchNativeDescriptor descriptor = context.nativeDescriptors[name];
+    DartinoNativeDescriptor descriptor = context.nativeDescriptors[name];
     if (descriptor == null) {
       throw "Unsupported native function: $name";
     }
 
     if (name == "Coroutine._coroutineNewStack") {
       // The static native method `Coroutine._coroutineNewStack` will invoke
       // the instance method `Coroutine._coroutineStart`.
       if (coroutineClass == null) {
         compiler.reporter.internalError(
             function, "required class [Coroutine] not found");
       }
       FunctionElement coroutineStart =
           coroutineClass.lookupLocalMember("_coroutineStart");
       Selector selector = new Selector.fromElement(coroutineStart);
-      new FletchRegistry(compiler)
+      new DartinoRegistry(compiler)
           ..registerDynamicUse(selector);
     } else if (name == "Process._spawn") {
       // The native method `Process._spawn` will do a closure invoke with 0, 1,
       // or 2 arguments.
-      new FletchRegistry(compiler)
+      new DartinoRegistry(compiler)
           ..registerDynamicUse(new Selector.callClosure(0))
           ..registerDynamicUse(new Selector.callClosure(1))
           ..registerDynamicUse(new Selector.callClosure(2));
     }
 
     int arity = codegen.assembler.functionArity;
     if (name == "Port.send" ||
         name == "Port._sendList" ||
         name == "Port._sendExit") {
       codegen.assembler.invokeNativeYield(arity, descriptor.index);
@@ skipping 12 matching lines @@
           ..emitThrow()
           ..methodEnd();
     } else {
       codegen.compile();
     }
   }
 
   void codegenExternalFunction(
       FunctionElement function,
       FunctionCodegen codegen) {
-    if (function == fletchExternalYield) {
+    if (function == dartinoExternalYield) {
       codegenExternalYield(function, codegen);
     } else if (function == context.compiler.identicalFunction.implementation) {
       codegenIdentical(function, codegen);
-    } else if (function == fletchExternalInvokeMain) {
+    } else if (function == dartinoExternalInvokeMain) {
       codegenExternalInvokeMain(function, codegen);
     } else if (function.name == noSuchMethodTrampolineName &&
                function.library == compiler.coreLibrary) {
       codegenExternalNoSuchMethodTrampoline(function, codegen);
     } else {
       DiagnosticMessage message = context.compiler.reporter
           .createMessage(function.node,
               MessageKind.GENERIC,
               {'text':
                   'External function "${function.name}" is not supported'});
@@ skipping 36 matching lines @@
   }
 
   void codegenExternalNoSuchMethodTrampoline(
       FunctionElement function,
       FunctionCodegen codegen) {
     // NOTE: The number of arguments to the [noSuchMethodName] function must be
     // kept in sync with:
     //     src/vm/interpreter.cc:HandleEnterNoSuchMethod
     int id = context.getSymbolId(
         context.mangleName(new Name(noSuchMethodName, compiler.coreLibrary)));
-    int fletchSelector = FletchSelector.encodeMethod(id, 3);
+    int dartinoSelector = DartinoSelector.encodeMethod(id, 3);
     BytecodeLabel skipGetter = new BytecodeLabel();
     codegen.assembler
         ..enterNoSuchMethod(skipGetter)
         // First invoke the getter.
         ..invokeSelector(2)
         // Then invoke 'call', with the receiver being the result of the
         // previous invokeSelector.
         ..invokeSelector(1)
         ..exitNoSuchMethod()
         ..bind(skipGetter)
-        ..invokeMethod(fletchSelector, 1)
+        ..invokeMethod(dartinoSelector, 1)
         ..exitNoSuchMethod()
         ..methodEnd();
   }
 
   bool isNative(Element element) {
     if (element is FunctionElement) {
       for (var metadata in element.metadata) {
         // TODO(ahe): This code should ensure that @native resolves to precisely
-        // the native variable in dart:fletch._system.
+        // the native variable in dart:dartino._system.
         if (metadata.constant == null) continue;
         ConstantValue value = context.getConstantValue(metadata.constant);
         if (!value.isString) continue;
         StringConstantValue stringValue = value;
         if (stringValue.toDartString().slowToString() != 'native') continue;
         return true;
       }
     }
     return false;
   }
@@ skipping 12 matching lines @@
     return closureEnvironments.putIfAbsent(member, () {
       ClosureVisitor environment = new ClosureVisitor(member, elements);
       return environment.compute();
     });
   }
 
   void markFunctionConstantAsUsed(FunctionConstantValue value) {
     // TODO(ajohnsen): Use registry in CodegenVisitor to register the used
     // constants.
     FunctionElement function = value.element;
-    createTearoffClass(createFletchFunctionBuilder(function));
+    createTearoffClass(createDartinoFunctionBuilder(function));
     // Be sure to actually enqueue the function for compilation.
-    FletchRegistry registry = new FletchRegistry(compiler);
+    DartinoRegistry registry = new DartinoRegistry(compiler);
     registry.registerStaticUse(new StaticUse.foreignUse(function));
   }
 
-  FletchFunctionBase createParameterStub(
-      FletchFunctionBase function,
+  DartinoFunctionBase createParameterStub(
+      DartinoFunctionBase function,
       Selector selector) {
     CallStructure callStructure = selector.callStructure;
     assert(callStructure.signatureApplies(function.signature));
     ParameterStubSignature signature = new ParameterStubSignature(
         function.functionId, callStructure);
-    FletchFunctionBase stub = systemBuilder.lookupParameterStub(signature);
+    DartinoFunctionBase stub = systemBuilder.lookupParameterStub(signature);
     if (stub != null) return stub;
 
     int arity = selector.argumentCount;
     if (function.isInstanceMember) arity++;
 
-    FletchFunctionBuilder builder = systemBuilder.newFunctionBuilder(
-        FletchFunctionKind.PARAMETER_STUB,
+    DartinoFunctionBuilder builder = systemBuilder.newFunctionBuilder(
+        DartinoFunctionKind.PARAMETER_STUB,
         arity);
 
     BytecodeAssembler assembler = builder.assembler;
 
     void loadInitializerOrNull(ParameterElement parameter) {
       Expression initializer = parameter.initializer;
       if (initializer != null) {
         ConstantExpression expression = context.compileConstant(
             initializer,
             parameter.memberContext.resolvedAst.elements,
@@ skipping 41 matching lines @@
         ..invokeStatic(constId, index)
         ..ret()
         ..methodEnd();
 
     systemBuilder.registerParameterStub(signature, builder);
 
     return builder;
   }
 
   void patchClassWithStub(
-      FletchFunctionBase stub,
+      DartinoFunctionBase stub,
       Selector selector,
       int classId,
       bool isClosureClass) {
-    int fletchSelector = context.toFletchSelector(selector);
-    FletchClassBuilder classBuilder = systemBuilder.lookupClassBuilder(classId);
+    int dartinoSelector = context.toDartinoSelector(selector);
+    DartinoClassBuilder classBuilder = systemBuilder.lookupClassBuilder(classId);
     if (classBuilder == null) {
       if (isClosureClass) {
         classBuilder =
             systemBuilder.newPatchClassBuilder(classId, compiledClosureClass);
       } else {
-        FletchClass klass = systemBuilder.lookupClass(classId);
+        DartinoClass klass = systemBuilder.lookupClass(classId);
         assert(klass.element != null);
         classBuilder = registerClassElement(klass.element);
       }
     }
-    classBuilder.addToMethodTable(fletchSelector, stub);
+    classBuilder.addToMethodTable(dartinoSelector, stub);
 
     // Inject parameter stub into all mixin usages.
     getMixinApplicationsOfClass(classBuilder).forEach((ClassElement usage) {
-      FletchClassBuilder classBuilder =
+      DartinoClassBuilder classBuilder =
           systemBuilder.lookupClassBuilderByElement(usage);
-      classBuilder.addToMethodTable(fletchSelector, stub);
+      classBuilder.addToMethodTable(dartinoSelector, stub);
     });
   }
 
   /// Create a tear-off getter for [function].  If [isSpecialCallMethod] is
   /// `true`, this is the special case for `someClosure.call` which should
   /// always return `someClosure`. This implies that when [isSpecialCallMethod]
   /// is true, we assume [function] is already a member of a closure class (or
   /// a class with a `call` method [ClosureKind.functionLike]) and that the
   /// getter should be added to that class.
   void createTearoffGetterForFunction(
-      FletchFunctionBuilder function,
+      DartinoFunctionBuilder function,
       {bool isSpecialCallMethod}) {
     if (isSpecialCallMethod == null) {
       throw new ArgumentError("isSpecialCallMethod");
     }
-    FletchFunctionBuilder getter = systemBuilder.newFunctionBuilder(
-        FletchFunctionKind.ACCESSOR,
+    DartinoFunctionBuilder getter = systemBuilder.newFunctionBuilder(
+        DartinoFunctionKind.ACCESSOR,
         1);
     // If the getter is of 'call', return the instance instead.
     if (isSpecialCallMethod) {
       getter.assembler
           ..loadParameter(0)
           ..ret()
           ..methodEnd();
     } else {
-      FletchClassBuilder tearoffClass = createTearoffClass(function);
+      DartinoClassBuilder tearoffClass = createTearoffClass(function);
       int constId = getter.allocateConstantFromClass(tearoffClass.classId);
       getter.assembler
           ..loadParameter(0)
           ..allocate(constId, tearoffClass.fields)
           ..ret()
           ..methodEnd();
     }
     // If the name is private, we need the library.
     // Invariant: We only generate public stubs, e.g. 'call'.
     LibraryElement library;
     if (function.element != null) {
       library = function.element.library;
     }
     // TODO(sigurdm): Avoid allocating new name here.
     Name name = new Name(function.name, library);
-    int fletchSelector = context.toFletchSelector(
+    int dartinoSelector = context.toDartinoSelector(
         new Selector.getter(name));
-    FletchClassBuilder classBuilder = systemBuilder.lookupClassBuilder(
+    DartinoClassBuilder classBuilder = systemBuilder.lookupClassBuilder(
         function.memberOf);
-    classBuilder.addToMethodTable(fletchSelector, getter);
+    classBuilder.addToMethodTable(dartinoSelector, getter);
 
     // Inject getter into all mixin usages.
     getMixinApplicationsOfClass(classBuilder).forEach((ClassElement usage) {
-      FletchClassBuilder classBuilder =
+      DartinoClassBuilder classBuilder =
           systemBuilder.lookupClassBuilderByElement(usage);
-      classBuilder.addToMethodTable(fletchSelector, getter);
+      classBuilder.addToMethodTable(dartinoSelector, getter);
     });
   }
 
   void compileTypeTest(ClassElement element, InterfaceType type) {
     assert(element.isDeclaration);
-    int fletchSelector = context.toFletchIsSelector(type.element);
-    FletchClassBuilder builder =
+    int dartinoSelector = context.toDartinoIsSelector(type.element);
+    DartinoClassBuilder builder =
         systemBuilder.lookupClassBuilderByElement(element);
     if (builder != null) {
       context.compiler.reportVerboseInfo(
           element, 'Adding is-selector for $type');
-      builder.addIsSelector(fletchSelector);
+      builder.addIsSelector(dartinoSelector);
     }
   }
 
   int assembleProgram() => 0;
 
-  FletchDelta computeDelta() {
+  DartinoDelta computeDelta() {
 
-    if (fletchSystemLibrary == null && compiler.compilationFailed) {
-      // TODO(ahe): Ensure fletchSystemLibrary is not null.
+    if (dartinoSystemLibrary == null && compiler.compilationFailed) {
+      // TODO(ahe): Ensure dartinoSystemLibrary is not null.
       return null;
     }
 
     List<VmCommand> commands = <VmCommand>[
         const NewMap(MapId.methods),
         const NewMap(MapId.classes),
         const NewMap(MapId.constants),
     ];
 
-    FletchSystem system = systemBuilder.computeSystem(context, commands);
+    DartinoSystem system = systemBuilder.computeSystem(context, commands);
 
     commands.add(const PushNewInteger(0));
     commands.add(new PushFromMap(
         MapId.methods,
-        system.lookupFunctionByElement(fletchSystemEntry).functionId));
+        system.lookupFunctionByElement(dartinoSystemEntry).functionId));
 
-    return new FletchDelta(system, systemBuilder.predecessorSystem, commands);
+    return new DartinoDelta(system, systemBuilder.predecessorSystem, commands);
   }
 
   bool enableCodegenWithErrorsIfSupported(Spannable spannable) {
     return true;
   }
 
   bool enableDeferredLoadingIfSupported(Spannable spannable, Registry registry) {
     return false;
   }
 
   bool registerDeferredLoading(Spannable node, Registry registry) {
     compiler.reporter.reportWarningMessage(
         node,
         MessageKind.GENERIC,
         {'text': "Deferred loading is not supported."});
     return false;
   }
 
   bool get supportsReflection => false;
 
   // TODO(sigurdm): Support async/await on the mobile platform.
   bool get supportsAsyncAwait {
     return !compiler.platformConfigUri.path.contains("embedded");
   }
 
   Future onLibraryScanned(LibraryElement library, LibraryLoader loader) {
     if (library.isPlatformLibrary) {
       String path = library.canonicalUri.path;
       switch(path) {
-        case 'fletch._system':
-          fletchSystemLibrary = library;
+        case 'dartino._system':
+          dartinoSystemLibrary = library;
           break;
-        case 'fletch.ffi':
-          fletchFFILibrary = library;
+        case 'dartino.ffi':
+          dartinoFFILibrary = library;
           break;
-        case 'fletch.collection':
+        case 'dartino.collection':
           collectionLibrary = library;
           break;
         case 'math':
           mathLibrary = library;
           break;
-        case 'fletch':
-          fletchLibrary = library;
+        case 'dartino':
+          dartinoLibrary = library;
           break;
       }
 
       if (!library.isPatched) {
         // Apply patch, if any.
         Uri patchUri = compiler.resolvePatchUri(library.canonicalUri.path);
         if (patchUri != null) {
           return compiler.patchParser.patchLibrary(loader, patchUri, library);
         }
       }
     }
     return null;
   }
 
   bool isBackendLibrary(LibraryElement library) {
-    return library == fletchSystemLibrary;
+    return library == dartinoSystemLibrary;
   }
 
   /// Return non-null to enable patching. Possible return values are 'new' and
   /// 'old'. Referring to old and new emitter. Since the new emitter is the
   /// future, we assume 'old' will go away. So it seems the best option for
-  /// Fletch is 'new'.
+  /// Dartino is 'new'.
   String get patchVersion => 'new';
 
   FunctionElement resolveExternalFunction(FunctionElement element) {
     if (element.isPatched) {
       FunctionElementX patch = element.patch;
       compiler.reporter.withCurrentElement(patch, () {
         patch.parseNode(compiler.parsing);
         patch.computeType(compiler.resolution);
       });
       element = patch;
       // TODO(ahe): Don't use ensureResolved (fix TODO in isNative instead).
       element.metadata.forEach((m) => m.ensureResolved(compiler.resolution));
-    } else if (element.library == fletchSystemLibrary) {
+    } else if (element.library == dartinoSystemLibrary) {
       // Nothing needed for now.
     } else if (element.library == compiler.coreLibrary) {
       // Nothing needed for now.
     } else if (element.library == mathLibrary) {
       // Nothing needed for now.
     } else if (element.library == asyncLibrary) {
       // Nothing needed for now.
-    } else if (element.library == fletchLibrary) {
+    } else if (element.library == dartinoLibrary) {
       // Nothing needed for now.
     } else if (externals.contains(element)) {
       // Nothing needed for now.
     } else {
       compiler.reporter.reportErrorMessage(
           element, MessageKind.PATCH_EXTERNAL_WITHOUT_IMPLEMENTATION);
     }
     return element;
   }
 
   int compileLazyFieldInitializer(
       FieldElement field,
-      FletchRegistry registry) {
+      DartinoRegistry registry) {
     int index = context.getStaticFieldIndex(field, null);
 
     if (field.initializer == null) return index;
 
     if (lazyFieldInitializers.containsKey(field)) return index;
 
-    FletchFunctionBuilder functionBuilder = systemBuilder.newFunctionBuilder(
-        FletchFunctionKind.LAZY_FIELD_INITIALIZER,
+    DartinoFunctionBuilder functionBuilder = systemBuilder.newFunctionBuilder(
+        DartinoFunctionKind.LAZY_FIELD_INITIALIZER,
         0,
         name: "${field.name} lazy initializer",
         element: field);
     lazyFieldInitializers[field] = functionBuilder;
 
     TreeElements elements = field.resolvedAst.elements;
 
     ClosureEnvironment closureEnvironment = createClosureEnvironment(
         field,
         elements);
 
     LazyFieldInitializerCodegen codegen = new LazyFieldInitializerCodegen(
         functionBuilder,
         context,
         elements,
         registry,
         closureEnvironment,
         field);
 
     codegen.compile();
 
     return index;
   }
 
   /// Compiles the initializer part of a constructor.
   ///
   /// See [compilePendingConstructorInitializers] for an overview of how
   /// constructor initializer and bodies are compiled.
-  void compileConstructorInitializer(FletchFunctionBuilder functionBuilder) {
+  void compileConstructorInitializer(DartinoFunctionBuilder functionBuilder) {
     ConstructorElement constructor = functionBuilder.element;
     assert(constructor.isImplementation);
     compiler.reporter.withCurrentElement(constructor, () {
       assert(functionBuilder ==
           systemBuilder.lookupConstructorInitializerByElement(constructor));
       context.compiler.reportVerboseInfo(
           constructor, 'Compiling constructor initializer $constructor');
 
       TreeElements elements = constructor.resolvedAst.elements;
 
       // TODO(ahe): We shouldn't create a registry, but we have to as long as
       // the enqueuer doesn't support elements with more than one compilation
       // artifact.
-      FletchRegistry registry = new FletchRegistry(compiler);
+      DartinoRegistry registry = new DartinoRegistry(compiler);
 
-      FletchClassBuilder classBuilder =
+      DartinoClassBuilder classBuilder =
           registerClassElement(constructor.enclosingClass.declaration);
 
       ClosureEnvironment closureEnvironment =
           createClosureEnvironment(constructor, elements);
 
       ConstructorCodegen codegen = new ConstructorCodegen(
           functionBuilder,
           context,
           elements,
           registry,
@@ skipping 20 matching lines @@
   /**
    * Generate a setter for field [fieldIndex].
    */
   int makeSetter(int fieldIndex) {
     return systemBuilder.getSetterByFieldIndex(fieldIndex);
   }
 
   void generateUnimplementedError(
       Spannable spannable,
       String reason,
-      FletchFunctionBuilder function,
+      DartinoFunctionBuilder function,
       {bool suppressHint: false}) {
     if (!suppressHint) {
       compiler.reporter.reportHintMessage(
           spannable, MessageKind.GENERIC, {'text': reason});
     }
     var constString = constantSystem.createString(
         new DartString.literal(reason));
     context.markConstantUsed(constString);
     function
         ..assembler.loadConst(function.allocateConstant(constString))
         ..assembler.emitThrow();
   }
 
   void forEachSubclassOf(ClassElement cls, void f(ClassElement cls)) {
     Queue<ClassElement> queue = new Queue<ClassElement>();
     queue.add(cls);
     while (queue.isNotEmpty) {
       ClassElement cls = queue.removeFirst();
       if (compiler.world.isInstantiated(cls.declaration)) {
         queue.addAll(compiler.world.strictSubclassesOf(cls));
       }
       f(cls);
     }
   }
 
   void newElement(Element element) {
     if (element.isField && element.isInstanceMember) {
       forEachSubclassOf(element.enclosingClass, (ClassElement cls) {
-        FletchClassBuilder builder = registerClassElement(cls);
+        DartinoClassBuilder builder = registerClassElement(cls);
         builder.addField(element);
       });
     }
   }
 
   void replaceFunctionUsageElement(Element element, List<Element> users) {
     for (Element user in users) {
       systemBuilder.replaceUsage(user, element);
     }
   }
 
   void forgetElement(Element element) {
     // TODO(ahe): The front-end should remove the element from
     // elementsWithCompileTimeErrors.
     compiler.elementsWithCompileTimeErrors.remove(element);
-    FletchFunctionBase function =
+    DartinoFunctionBase function =
         systemBuilder.lookupFunctionByElement(element);
     if (function == null) return;
     systemBuilder.forgetFunction(function);
   }
 
   void removeField(FieldElement element) {
     if (!element.isInstanceMember) return;
     ClassElement enclosingClass = element.enclosingClass;
     forEachSubclassOf(enclosingClass, (ClassElement cls) {
-      FletchClassBuilder builder = registerClassElement(cls);
+      DartinoClassBuilder builder = registerClassElement(cls);
       builder.removeField(element);
     });
   }
 
   void removeFunction(FunctionElement element) {
-    FletchFunctionBase function =
+    DartinoFunctionBase function =
         systemBuilder.lookupFunctionByElement(element);
     if (function == null) return;
     if (element.isInstanceMember) {
       ClassElement enclosingClass = element.enclosingClass;
-      FletchClassBuilder builder = registerClassElement(enclosingClass);
+      DartinoClassBuilder builder = registerClassElement(enclosingClass);
       builder.removeFromMethodTable(function);
     }
   }
 
   /// Invoked during codegen enqueuing to compile constructor initializers.
   ///
-  /// There's only one [Element] representing a constructor, but Fletch uses
+  /// There's only one [Element] representing a constructor, but Dartino uses
   /// two different functions for implementing a constructor.
   ///
   /// The first function takes care of allocating the instance and initializing
   /// fields (called the constructor initializer), the other function
   /// implements the body of the constructor (what is between the curly
   /// braces). A constructor initializer never calls constructor initializers
   /// of a superclass. Instead field initializers from the superclass are
   /// inlined in the constructor initializer. The constructor initializer will
   /// call all the constructor bodies from superclasses in the correct order.
   ///
@@ skipping 12 matching lines @@
     }
   }
 
   bool onQueueEmpty(Enqueuer enqueuer, Iterable<ClassElement> recentClasses) {
     if (enqueuer is! ResolutionEnqueuer) {
       compilePendingConstructorInitializers();
     }
     return true;
   }
 
-  FletchEnqueueTask makeEnqueuer() => new FletchEnqueueTask(compiler);
+  DartinoEnqueueTask makeEnqueuer() => new DartinoEnqueueTask(compiler);
 
   static bool isExactParameterMatch(
       FunctionSignature signature,
       CallStructure callStructure) {
     if (!callStructure.signatureApplies(signature)) {
       return false;
     }
     if (!signature.hasOptionalParameters) {
       // There are no optional parameters, and the signature applies, so this
       // is an exact match.
@@ skipping 12 matching lines @@
         signature.optionalParameterCount) {
       return false;
     }
     int index = 0;
     for (var parameter in signature.orderedOptionalParameters) {
       if (parameter.name != callStructure.namedArguments[index++]) return false;
     }
     return true;
   }
 
-  static FletchBackend createInstance(FletchCompilerImplementation compiler) {
-    return new FletchBackend(compiler);
+  static DartinoBackend createInstance(DartinoCompilerImplementation compiler) {
+    return new DartinoBackend(compiler);
   }
 
   Uri resolvePatchUri(String libraryName, Uri libraryRoot) {
     throw "Not implemented";
   }
 
 }
 
-class FletchImpactTransformer extends ImpactTransformer {
-  final FletchBackend backend;
+class DartinoImpactTransformer extends ImpactTransformer {
+  final DartinoBackend backend;
 
-  FletchImpactTransformer(this.backend);
+  DartinoImpactTransformer(this.backend);
 
   @override
   WorldImpact transformResolutionImpact(ResolutionImpact worldImpact) {
     TransformedWorldImpact transformed =
         new TransformedWorldImpact(worldImpact);
 
     bool anyChange = false;
 
     if (worldImpact.constSymbolNames.isNotEmpty) {
       ClassElement symbolClass =
@@ skipping 29 matching lines @@
     return element.memberContext != element;
   }
   return false;
 }
 
 Name memberName(AstElement element) {
   if (isLocalFunction(element)) return null;
   MemberElement member = element;
   return member.memberName;
 }