Get computeError working

pkg/analyzer/lib/src/generated/error.dart

Index: pkg/analyzer/lib/src/generated/error.dart
diff --git a/pkg/analyzer/lib/src/generated/error.dart b/pkg/analyzer/lib/src/generated/error.dart
index 005f8c6c4ab85f4b373bf9edbe2b3f918ca701a4..3d0814a82f05030e4acbb1971ccd5bbc83e701c4 100644
--- a/pkg/analyzer/lib/src/generated/error.dart
+++ b/pkg/analyzer/lib/src/generated/error.dart
@@ -191,6 +191,18 @@ class AnalysisError {
     buffer.write(_message);
     return buffer.toString();
   }
+
+  /**
+   * Merge all of the errors in the lists in the given list of [errorLists] into
+   * a single list of errors.
+   */
+  static List<AnalysisError> mergeLists(List<List<AnalysisError>> errorLists) {
+    List<AnalysisError> errors = <AnalysisError>[];
+    for (List<AnalysisError> errorList in errorLists) {
+      errors.addAll(errorList);
+    }
+    return errors;

[scheglov, 2015/05/07 18:11:38]

It could be also implemented as:

errorLists.expand((List<AnalysisError> errorList) => errorList).toList();

No type safety though :-(

[Brian Wilkerson, 2015/05/07 18:30:07]

I think I'll leave it, then.

+  }
 }
 
 /**