Unifying compiler context

pkg/front_end/tool/perf.dart

 // Copyright (c) 2016, 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.
 
 /// An entrypoint used to run portions of front_end and measure its performance.
 library front_end.tool.perf;
 
 import 'dart:async';
 import 'dart:io' show Directory, File, Platform, exit;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/error/listener.dart';
 import 'package:analyzer/file_system/file_system.dart' show ResourceUriResolver;
 import 'package:analyzer/file_system/physical_file_system.dart'
     show PhysicalResourceProvider;
 import 'package:analyzer/source/package_map_resolver.dart';
 import 'package:analyzer/src/context/builder.dart';
 import 'package:analyzer/src/dart/sdk/sdk.dart' show FolderBasedDartSdk;
 import 'package:analyzer/src/generated/engine.dart' show AnalysisOptionsImpl;
 import 'package:analyzer/src/generated/parser.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/source_io.dart';
 import 'package:analyzer/src/kernel/loader.dart';
 import 'package:analyzer/src/summary/format.dart';
 import 'package:analyzer/src/summary/idl.dart';
 import 'package:analyzer/src/summary/link.dart';
 import 'package:analyzer/src/summary/summarize_ast.dart';
-import 'package:front_end/compilation_error.dart';
+import 'package:front_end/compilation_message.dart';
 import 'package:front_end/compiler_options.dart';
 import 'package:front_end/src/scanner/reader.dart';
 import 'package:front_end/src/scanner/scanner.dart';
 import 'package:front_end/src/scanner/token.dart';
 import 'package:kernel/kernel.dart' hide Source;
 import 'package:package_config/discovery.dart';
 import 'package:path/path.dart' as path;
 import 'package:source_span/source_span.dart' show SourceSpan;
 
 main(List<String> args) async {
@@ skipping 155 matching lines @@
   return uri.toFilePath();
 }
 
 void _reportErrors(List errors, ErrorHandler onError) {
   if (onError == null) return;
   for (var error in errors) {
     onError(new _DartkError(error));
   }
 }
 
-class _DartkError implements CompilationError {
+class _DartkError implements CompilationMessage {
   String get tip => null;
   SourceSpan get span => null;
+  String get analyzerCode => null;
+  String get dart2jsCode => null;
+  Severity get severity => Severity.error;
   final String message;
   _DartkError(this.message);
 }
 
 /// Generates unlinkmed summaries for all files in [files], and returns them in
 /// an [_UnlinkedSummaries] container.
 _UnlinkedSummaries generateUnlinkedSummaries(Set<Source> files) {
   var unlinkedSummaries = new _UnlinkedSummaries();
   for (var source in files) {
     unlinkedSummaries.summariesByUri[source.uri.toString()] =
@@ skipping 214 matching lines @@
 class _Scanner extends Scanner {
   _Scanner(String contents) : super.create(new CharSequenceReader(contents)) {
     preserveComments = false;
   }
 
   @override
   void reportError(errorCode, int offset, List<Object> arguments) {
     // ignore errors.
   }
 }