Request bug report if fletch crashes

pkg/fletchc/lib/src/fletch_compiler_implementation.dart

 // Copyright (c) 2015, the Fletch 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_compiler_implementation;
 
 import 'dart:async' show
     EventSink;
 
 import 'package:sdk_library_metadata/libraries.dart' show
@@ skipping 24 matching lines @@
     Message,
     MessageKind,
     MessageTemplate;
 
 import 'package:compiler/src/util/util.dart' show
     Spannable;
 
 import 'fletch_registry.dart' show
     FletchRegistry;
 
+import 'please_report_crash.dart' show
+    crashReportRequested,
+    requestBugReportOnCompilerCrashMessage;
+
 import 'fletch_function_builder.dart';
 import 'debug_info.dart';
 import 'find_position_visitor.dart';
 import 'fletch_context.dart';
 
 import '../fletch_system.dart';
 
 const EXTRA_DART2JS_OPTIONS = const <String>[
     // TODO(ahe): This doesn't completely disable type inference. Investigate.
     '--disable-type-inference',
@@ skipping 213 matching lines @@
       String message,
       {bool forceVerbose: false}) {
     // TODO(johnniwinther): Use super.reportVerboseInfo once added.
     if (forceVerbose || verbose) {
       MessageTemplate template = MessageTemplate.TEMPLATES[MessageKind.GENERIC];
       reportDiagnostic(
           node, template.message({'text': message}, true), api.Diagnostic.HINT);
     }
   }
 
+  void pleaseReportCrash() {
+    crashReportRequested = true;
+    print(requestBugReportOnCompilerCrashMessage);
+  }
+
   void reportError(
       Spannable node,
       MessageKind messageKind,
       [Map arguments = const {}]) {
     if (messageKind == MessageKind.MIRRORS_LIBRARY_NOT_SUPPORT_BY_BACKEND) {
       const String noMirrors =
           "Fletch doesn't support 'dart:mirrors'. See https://goo.gl/Kwrd0O";
       messageKind = MessageKind.GENERIC;
       arguments = {'text': noMirrors};
     }
@@ skipping 39 matching lines @@
   }
 }
 
 SourceFile getSourceFile(api.CompilerInput provider, Uri uri) {
   if (provider is SourceFileProvider) {
     return provider.sourceFiles[uri];
   } else {
     return null;
   }
 }