Report an error on Dart Source reading exception.

pkg/analyzer/lib/src/generated/engine.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.
 
 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine;
 
 import "dart:math" as math;
@@ skipping 4666 matching lines @@
    */
   SourceEntry _recordGetContentsTask(GetContentTask task) {
     if (!task.isComplete) {
       return null;
     }
     Source source = task.source;
     SourceEntry sourceEntry = _cache.get(source);
     CaughtException thrownException = task.exception;
     if (thrownException != null) {
       sourceEntry.recordContentError(thrownException);
+      // TODO(scheglov) should we add separate ContentErrorCode and
+      // SourceEntry.CONTENT_ERRORS entry?
+      if (sourceEntry is DartEntry) {

[Brian Wilkerson, 2015/02/11 00:49:09]

We probably shouldn't limit this to only Dart files, but we can address that
later.

+        sourceEntry.setValue(
+            DartEntry.SCAN_ERRORS,
+            <AnalysisError>[
+                new AnalysisError.con1(source, ScannerErrorCode.UNABLE_GET_CONTENT)]);

[scheglov, 2015/02/10 23:26:14]

Would it be better to create the error in GetContentTask?

[Brian Wilkerson, 2015/02/11 00:49:10]

Probably, but we might want to wait for the task model.

+        ChangeNoticeImpl notice = _getNotice(source);
+        notice.setErrors(sourceEntry.allErrors, null);
+      }
       _workManager.remove(source);
       throw new AnalysisException('<rethrow>', thrownException);
     }
     sourceEntry.modificationTime = task.modificationTime;
     sourceEntry.setValue(SourceEntry.CONTENT, task.content);
     return sourceEntry;
   }
 
   /**
    * Record the results produced by performing a [IncrementalAnalysisTask].
@@ skipping 7673 matching lines @@
     if (element.id == _id) {
       result = element;
       throw new _ElementByIdFinderException();
     }
     super.visitElement(element);
   }
 }
 
 class _ElementByIdFinderException {
 }