Error Suppression FTW.

pkg/analyzer/lib/src/generated/error.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.
 
 library engine.error;
 
 import 'dart:collection';
 
+import 'package:analyzer/src/task/model.dart';
+import 'package:analyzer/task/model.dart';
 import 'package:source_span/source_span.dart';
 
 import 'ast.dart' show AstNode;
 import 'element.dart';
 import 'java_core.dart';
 import 'scanner.dart' show Token;
 import 'source.dart';
 
 /**
+ * The descriptor used to associate error filters with analysis contexts in
+ * configuration data.
+ */
+final ResultDescriptor<List<ErrorFilter>> CONFIGURED_ERROR_FILTERS =

[scheglov, 2015/10/27 23:41:44]

ListResultDescriptor

[pquitslund, 2015/10/28 15:56:44]

Done.

+    new ResultDescriptorImpl('configured.errors', const <ErrorFilter>[]);
+
+/**
+ * (For now) a predicate used to potentially filter an [error].
+ * In the future, may support changing severity as well.

[scheglov, 2015/10/27 23:41:44]

Does returning `true` mean "include the value into the output" or "remove it
from the output"?

[pquitslund, 2015/10/28 15:56:44]

Updated doc. 

+ */
+typedef bool ErrorFilter(AnalysisError error);
+
+/**
  * An error discovered during the analysis of some Dart code.
  *
  * See [AnalysisErrorListener].
  */
 class AnalysisError {
   /**
    * An empty array of errors used when no errors are expected.
    */
   static const List<AnalysisError> NO_ERRORS = const <AnalysisError>[];
 
@@ skipping 5044 matching lines @@
    * Initialize a newly created error code to have the given [name].
    */
   const TodoCode(String name) : super(name, "{0}");
 
   @override
   ErrorSeverity get errorSeverity => ErrorSeverity.INFO;
 
   @override
   ErrorType get type => ErrorType.TODO;
 }