Update dart2js unit tests to dart_parser and dart_scanner.

pkg/dart2js_incremental/lib/dart2js_incremental.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_incremental;
-
-import 'dart:async' show
-    EventSink,
-    Future;
-
-import 'dart:developer' show
-    UserTag;
-
-import 'package:compiler/src/apiimpl.dart' show
-    CompilerImpl;
-
-import 'package:compiler/compiler_new.dart' show
-    CompilerDiagnostics,
-    CompilerInput,
-    CompilerOutput,
-    Diagnostic;
-
-import 'package:compiler/src/options.dart' show
-    CompilerOptions;
-
-import 'package:compiler/src/null_compiler_output.dart' show
-    NullCompilerOutput;
-
-import 'package:compiler/src/js_backend/js_backend.dart' show
-    JavaScriptBackend;
-
-import 'package:compiler/src/js_emitter/full_emitter/emitter.dart'
-    as full show Emitter;
-
-import 'package:compiler/src/elements/elements.dart' show
-    LibraryElement;
-
-import 'library_updater.dart' show
-    IncrementalCompilerContext,
-    LibraryUpdater,
-    Logger;
-
-import 'package:compiler/src/js/js.dart' as jsAst;
-
-part 'caching_compiler.dart';
-
-const List<String> INCREMENTAL_OPTIONS = const <String>[
-    '--disable-type-inference',
-    '--incremental-support',
-    '--generate-code-with-compile-time-errors',
-    '--no-source-maps', // TODO(ahe): Remove this.
-];
-
-class IncrementalCompiler {
-  final Uri libraryRoot;
-  final Uri packageRoot;
-  final Uri packageConfig;
-  final CompilerInput inputProvider;
-  final CompilerDiagnostics diagnosticHandler;
-  final List<String> options;
-  final CompilerOutput outputProvider;
-  final Map<String, dynamic> environment;
-  final List<String> _updates = <String>[];
-  final IncrementalCompilerContext _context = new IncrementalCompilerContext();
-
-  CompilerImpl _compiler;
-
-  IncrementalCompiler({
-      this.libraryRoot,
-      this.packageRoot,
-      this.packageConfig,
-      this.inputProvider,
-      this.diagnosticHandler,
-      this.options,
-      this.outputProvider,
-      this.environment}) {
-    if (libraryRoot == null) {
-      throw new ArgumentError('libraryRoot is null.');
-    }
-    if (inputProvider == null) {
-      throw new ArgumentError('inputProvider is null.');
-    }
-    if (outputProvider == null) {
-      throw new ArgumentError('outputProvider is null.');
-    }
-    if (diagnosticHandler == null) {
-      throw new ArgumentError('diagnosticHandler is null.');
-    }
-    _context.incrementalCompiler = this;
-  }
-
-  LibraryElement get mainApp => _compiler.mainApp;
-
-  CompilerImpl get compiler => _compiler;
-
-  Future<bool> compile(Uri script) {
-    return _reuseCompiler(null).then((CompilerImpl compiler) {
-      _compiler = compiler;
-      return compiler.run(script);
-    });
-  }
-
-  Future<CompilerImpl> _reuseCompiler(
-      Future<bool> reuseLibrary(LibraryElement library)) {
-    List<String> options = this.options == null
-        ? <String> [] : new List<String>.from(this.options);
-    options.addAll(INCREMENTAL_OPTIONS);
-    return reuseCompiler(
-        cachedCompiler: _compiler,
-        libraryRoot: libraryRoot,
-        packageRoot: packageRoot,
-        packageConfig: packageConfig,
-        inputProvider: inputProvider,
-        diagnosticHandler: diagnosticHandler,
-        options: options,
-        outputProvider: outputProvider,
-        environment: environment,
-        reuseLibrary: reuseLibrary);
-  }
-
-  Future<String> compileUpdates(
-      Map<Uri, Uri> updatedFiles,
-      {Logger logTime,
-       Logger logVerbose}) {
-    if (logTime == null) {
-      logTime = (_) {};
-    }
-    if (logVerbose == null) {
-      logVerbose = (_) {};
-    }
-    Future mappingInputProvider(Uri uri) {
-      Uri updatedFile = updatedFiles[uri];
-      return inputProvider.readFromUri(updatedFile == null ? uri : updatedFile);
-    }
-    LibraryUpdater updater = new LibraryUpdater(
-        _compiler,
-        mappingInputProvider,
-        logTime,
-        logVerbose,
-        _context);
-    _context.registerUriWithUpdates(updatedFiles.keys);
-    Future<CompilerImpl> future = _reuseCompiler(updater.reuseLibrary);
-    return future.then((CompilerImpl compiler) {
-      _compiler = compiler;
-      if (compiler.compilationFailed) {
-        return null;
-      } else {
-        String update = updater.computeUpdateJs();
-        _updates.add(update);
-        return update;
-      }
-    });
-  }
-
-  String allUpdates() {
-    jsAst.Node updates = jsAst.js.escapedString(_updates.join(""));
-
-    JavaScriptBackend backend = _compiler.backend;
-
-    jsAst.FunctionDeclaration mainRunner = jsAst.js.statement(r"""
-function dartMainRunner(main, args) {
-  #helper.patch(#updates + "\n//# sourceURL=initial_patch.js\n");
-  return main(args);
-}""", {'updates': updates, 'helper': backend.namer.accessIncrementalHelper});
-
-    return jsAst.prettyPrint(mainRunner, _compiler).getText();
-  }
-}
-
-class IncrementalCompilationFailed {
-  final String reason;
-
-  const IncrementalCompilationFailed(this.reason);
-
-  String toString() => "Can't incrementally compile program.\n\n$reason";
-}