dart2js: Rename emitters.

pkg/compiler/lib/src/js_emitter/new_emitter/emitter.dart

-// Copyright (c) 2014, the Dart 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 file.
-
-library dart2js.new_js_emitter.emitter;
-
-import 'package:js_runtime/shared/embedded_names.dart' show
-    JsBuiltin,
-    METADATA,
-    TYPES;
-
-import '../program_builder.dart' show ProgramBuilder;
-import '../model.dart';
-import 'model_emitter.dart';
-import '../../common.dart';
-import '../../elements/elements.dart' show FieldElement;
-import '../../js/js.dart' as js;
-
-import '../../js_backend/js_backend.dart' show
-    JavaScriptBackend,
-    Namer;
-
-import '../js_emitter.dart' show
-    NativeEmitter;
-
-import '../js_emitter.dart' as emitterTask show
-    Emitter;
-
-import '../../util/util.dart' show
-    NO_LOCATION_SPANNABLE;
-
-class Emitter implements emitterTask.Emitter {
-  final Compiler _compiler;
-  final Namer namer;
-  final ModelEmitter _emitter;
-
-  JavaScriptBackend get _backend => _compiler.backend;
-
-  Emitter(Compiler compiler, Namer namer, NativeEmitter nativeEmitter)
-      : this._compiler = compiler,
-        this.namer = namer,
-        _emitter = new ModelEmitter(compiler, namer, nativeEmitter);
-
-  @override
-  int emitProgram(ProgramBuilder programBuilder) {
-    Program program = programBuilder.buildProgram();
-    return _emitter.emitProgram(program);
-  }
-
-  // TODO(floitsch): copied from OldEmitter. Adjust or share.
-  @override
-  bool isConstantInlinedOrAlreadyEmitted(ConstantValue constant) {
-    return _emitter.isConstantInlinedOrAlreadyEmitted(constant);
-  }
-
-  // TODO(floitsch): copied from OldEmitter. Adjust or share.
-  @override
-  int compareConstants(ConstantValue a, ConstantValue b) {
-    return _emitter.compareConstants(a, b);
-  }
-
-  @override
-  js.Expression constantReference(ConstantValue value) {
-    return _emitter.generateConstantReference(value);
-  }
-
-  @override
-  js.Expression generateEmbeddedGlobalAccess(String global) {
-    return _emitter.generateEmbeddedGlobalAccess(global);
-  }
-
-  @override
-  // TODO(herhut): Use a single shared function.
-  js.Expression generateFunctionThatReturnsNull() {
-    return js.js('function() {}');
-  }
-
-  js.PropertyAccess _globalPropertyAccess(Element element) {
-    js.Name name = namer.globalPropertyName(element);
-    js.PropertyAccess pa = new js.PropertyAccess(
-        new js.VariableUse(namer.globalObjectFor(element)), name);
-    return pa;
-  }
-
-  @override
-  js.Expression isolateLazyInitializerAccess(FieldElement element) {
-    return js.js('#.#', [namer.globalObjectFor(element),
-                         namer.lazyInitializerName(element)]);
-  }
-
-  @override
-  js.Expression isolateStaticClosureAccess(FunctionElement element) {
-    return _emitter.generateStaticClosureAccess(element);
-  }
-
-  @override
-  js.PropertyAccess staticFieldAccess(FieldElement element) {
-    return _globalPropertyAccess(element);
-  }
-
-  @override
-  js.PropertyAccess staticFunctionAccess(FunctionElement element) {
-    return _globalPropertyAccess(element);
-  }
-
-  @override
-  js.PropertyAccess constructorAccess(ClassElement element) {
-    return _globalPropertyAccess(element);
-  }
-
-  @override
-  js.PropertyAccess prototypeAccess(ClassElement element,
-                                    bool hasBeenInstantiated) {
-    js.Expression constructor =
-        hasBeenInstantiated ? constructorAccess(element) : typeAccess(element);
-    return js.js('#.prototype', constructor);
-  }
-
-  @override
-  js.Expression interceptorClassAccess(ClassElement element) {
-    // Some interceptors are eagerly constructed. However, native interceptors
-    // aren't.
-    return js.js('#.ensureResolved()', _globalPropertyAccess(element));
-  }
-
-  @override
-  js.Expression typeAccess(Element element) {
-    // TODO(floitsch): minify 'ensureResolved'.
-    // TODO(floitsch): don't emit `ensureResolved` for eager classes.
-    return js.js('#.ensureResolved()', _globalPropertyAccess(element));
-  }
-
-  @override
-  js.Template templateForBuiltin(JsBuiltin builtin) {
-    String typeNameProperty = ModelEmitter.typeNameProperty;
-
-    switch (builtin) {
-      case JsBuiltin.dartObjectConstructor:
-        return js.js.expressionTemplateYielding(
-            typeAccess(_compiler.objectClass));
-
-      case JsBuiltin.isCheckPropertyToJsConstructorName:
-        int isPrefixLength = namer.operatorIsPrefix.length;
-        return js.js.expressionTemplateFor('#.substring($isPrefixLength)');
-
-      case JsBuiltin.isFunctionType:
-        return _backend.rti.representationGenerator.templateForIsFunctionType;
-
-      case JsBuiltin.rawRtiToJsConstructorName:
-        return js.js.expressionTemplateFor("#.$typeNameProperty");
-
-      case JsBuiltin.rawRuntimeType:
-        return js.js.expressionTemplateFor("#.constructor");
-
-      case JsBuiltin.createFunctionTypeRti:
-        return _backend.rti.representationGenerator
-            .templateForCreateFunctionType;
-
-      case JsBuiltin.isSubtype:
-        // TODO(floitsch): move this closer to where is-check properties are
-        // built.
-        String isPrefix = namer.operatorIsPrefix;
-        return js.js.expressionTemplateFor("('$isPrefix' + #) in #.prototype");
-
-      case JsBuiltin.isGivenTypeRti:
-        return js.js.expressionTemplateFor('#.$typeNameProperty === #');
-
-      case JsBuiltin.getMetadata:
-        return _emitter.templateForReadMetadata;
-
-      case JsBuiltin.getType:
-        return _emitter.templateForReadType;
-
-      default:
-        _compiler.internalError(NO_LOCATION_SPANNABLE,
-                                "Unhandled Builtin: $builtin");
-        return null;
-    }
-  }
-
-  @override
-  void invalidateCaches() {
-  }
-}