Work around breaking task_dependency_graph/check_test because of a bug in AnalysisContext with gene…

pkg/analyzer/lib/src/dart/analysis/driver.dart

 // Copyright (c) 2016, 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.
 
 import 'dart:async';
 import 'dart:collection';
 import 'dart:typed_data';
 
 import 'package:analyzer/context/context_root.dart';
 import 'package:analyzer/context/declared_variables.dart';
@@ skipping 27 matching lines @@
 import 'package:analyzer/src/lint/registry.dart' as linter;
 import 'package:analyzer/src/summary/format.dart';
 import 'package:analyzer/src/summary/idl.dart';
 import 'package:analyzer/src/summary/package_bundle_reader.dart';
 import 'package:front_end/src/base/api_signature.dart';
 import 'package:front_end/src/base/performace_logger.dart';
 import 'package:front_end/src/byte_store/byte_store.dart';
 import 'package:meta/meta.dart';
 
 /**
+ * TODO(scheglov) We could use generalized Function in [AnalysisDriverTestView],
+ * but this breaks `AnalysisContext` and code generation. So, for now let's
+ * work around them, and rewrite generators to [AnalysisDriver].
+ */
+typedef Future<Null> WorkToWaitAfterComputingResult(String path);
+
+/**
  * This class computes [AnalysisResult]s for Dart files.
  *
  * Let the set of "explicitly analyzed files" denote the set of paths that have
  * been passed to [addFile] but not subsequently passed to [removeFile]. Let
  * the "current analysis results" denote the map from the set of explicitly
  * analyzed files to the most recent [AnalysisResult] delivered to [results]
  * for each file. Let the "current file state" represent a map from file path
  * to the file contents most recently read from that file, or fetched from the
  * content cache (considering all possible possible file paths, regardless of
  * whether they're in the set of explicitly analyzed files). Let the
@@ skipping 1610 matching lines @@
 }
 
 @visibleForTesting
 class AnalysisDriverTestView {
   final AnalysisDriver driver;
 
   int numOfCreatedLibraryContexts = 0;
 
   int numOfAnalyzedLibraries = 0;
 
-  Future<Null> Function(String path) workToWaitAfterComputingResult;
+  WorkToWaitAfterComputingResult workToWaitAfterComputingResult;
 
   AnalysisDriverTestView(this.driver);
 
   FileTracker get fileTracker => driver._fileTracker;
 
   Map<String, AnalysisResult> get priorityResults => driver._priorityResults;
 
   Future<SummaryDataStore> getSummaryStore(String libraryPath) async {
     FileState library = driver.fsState.getFileForPath(libraryPath);
     LibraryContext libraryContext = await driver._createLibraryContext(library);
@@ skipping 418 matching lines @@
           libraryDeclarations.add(new TopLevelDeclarationInSource(
               file.source, declaration, isExported));
         }
       }
     }
 
     // We're not done yet.
     return false;
   }
 }