Failing gracefully

pkg/docgen/lib/docgen.dart

Index: pkg/docgen/lib/docgen.dart
diff --git a/pkg/docgen/lib/docgen.dart b/pkg/docgen/lib/docgen.dart
index af8540b49827aadeb237727fce58a822b80ea6e9..f2ec389a9290359cc26eb974863cb2db28eae414 100644
--- a/pkg/docgen/lib/docgen.dart
+++ b/pkg/docgen/lib/docgen.dart
@@ -182,7 +182,12 @@ Future<MirrorSystem> _getMirrorSystemHelper(List<String> libraries,
   });
   return dart2js.analyze(librariesUri, libraryUri, packageUri,
       provider.readStringFromUri, diagnosticHandler,
-      ['--preserve-comments', '--categories=Client,Server']);
+      ['--preserve-comments', '--categories=Client,Server'])
+      ..catchError((error) {
+        logger.severe('Error: Failed to create mirror system. ');
+        // To avoid printing the stack trace. 
+        exit(1);

[Andrei Mouravski, 2013/06/28 22:57:34]

I think you can actually extract the stack trace in the new system, though I'm
not sure... Ask Nathan or Bob.

[janicejl, 2013/06/28 23:47:12]

Have talked to Nathan. 

Dart2js analyze throws a string when it fails to create a mirror system, and
hence it is not possible to use the stack trace package to extract fine details
about the error. 

+      });
 }
 
 /**