First end-to-end capability in analyzer2dart.

pkg/analyzer2dart/lib/src/dart_backend.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 analyzer2dart.dart_backend;
+
+import 'package:compiler/implementation/elements/elements.dart';
+import 'package:compiler/implementation/dart_backend/dart_backend.dart';
+import 'package:compiler/implementation/dart2jslib.dart';
+
+import 'driver.dart';
+import 'converted_world.dart';
+
+void compileToDart(Driver driver, ConvertedWorld convertedWorld) {
+  DartOutputter outputter =
+      new DartOutputter(new Listener(), driver.outputProvider);
+  outputter.assembleProgram(
+    libraries: convertedWorld.libraries,
+    instantiatedClasses: convertedWorld.instantiatedClasses,
+    resolvedElements: convertedWorld.resolvedElements,
+    mainFunction: convertedWorld.mainFunction,
+    computeElementAst: (Element element) {
+      return DartBackend.createElementAst(
+          null, null, null, null, convertedWorld.getIr(element));
+    },
+    shouldOutput: (_) => true,
+    isSafeToRemoveTypeDeclarations: (_) => false);
+
+}
+
+class Listener implements DiagnosticListener {
+
+  @override
+  void internalError(Spannable spannable, message) {
+    // TODO: implement internalError
+  }
+
+  @override
+  void log(message) {
+    // TODO: implement log
+  }
+
+  @override
+  void reportError(Spannable node,
+                   MessageKind errorCode,
+                   [Map arguments = const {}]) {
+    // TODO: implement reportError
+  }
+
+  @override
+  void reportFatalError(Spannable node,
+                        MessageKind errorCode,
+                        [Map arguments = const {}]) {
+    // TODO: implement reportFatalError
+  }
+
+  @override
+  void reportHint(Spannable node,
+                  MessageKind errorCode,
+                  [Map arguments = const {}]) {
+    // TODO: implement reportHint
+  }
+
+  @override
+  void reportInfo(Spannable node,
+                  MessageKind errorCode,
+                  [Map arguments = const {}]) {
+    // TODO: implement reportInfo
+  }
+
+  @override
+  void reportWarning(Spannable node,
+                     MessageKind errorCode,
+                     [Map arguments = const {}]) {
+    // TODO: implement reportWarning
+  }
+
+  @override
+  SourceSpan spanFromSpannable(Spannable node) {
+    // TODO: implement spanFromSpannable
+  }
+
+  @override
+  withCurrentElement(element, f()) {
+    // TODO: implement withCurrentElement
+  }
+}