anchor.diff:          analysisSection.exit();
           analysisSection = null;
         }
  -      // TODO(scheglov) implement
       } finally {
         print('The stream was cancelled.');
       }
  
positive.code:   PackageBundle _sdkBundle;
  
    /**
     * The mapping from the files for which analysis was requested using
     * [getResult] to the [Completer]s to report the result.
     */
    final _requestedFiles = <String, List<Completer<AnalysisResult>>>{};
  
    /**
     * The set of explicitly analyzed files.
     */
    final _explicitFiles = new LinkedHashSet<String>();
  
    /**
     * The set of files were reported as changed through [changeFile] and not
  
negative.code:           continue;
          }
  
          // TODO(scheglov) analyze requested files
  
          // Analyze a priority file.
          if (_priorityFiles.isNotEmpty) {
            bool analyzed = false;
            for (String path in _priorityFiles) {
              if (_filesToAnalyze.remove(path)) {
                _File file = _fileForPath(path);
                AnalysisResult result = _computeAnalysisResult(file);
                yield result;
                break;
              }
            }
            // Repeat the processing loop.
            if (analyzed) {
              _hasWork.notify();
              continue;
            }
          }
  
          // Analyze a general file.
          if (_filesToAnalyze.isNotEmpty) {
            String path = _removeFirst(_filesToAnalyze);
            _File file = _fileForPath(path);
  