Make an AstProvider available to AssistProcessors

pkg/analysis_server/lib/src/edit/edit_domain.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.
 
 import 'dart:async';
 
 import 'package:analysis_server/plugin/edit/assist/assist_core.dart';
 import 'package:analysis_server/plugin/edit/assist/assist_dart.dart';
 import 'package:analysis_server/plugin/edit/fix/fix_core.dart';
 import 'package:analysis_server/plugin/edit/fix/fix_dart.dart';
@@ skipping 157 matching lines @@
       AnalysisResult result = await server.getAnalysisResult(file);
       if (result != null) {
         CompilationUnit unit = result.unit;
         CompilationUnitElement compilationUnitElement =
             resolutionMap.elementDeclaredByCompilationUnit(unit);
         DartAssistContext dartAssistContext = new _DartAssistContextForValues(
             compilationUnitElement.source,
             offset,
             length,
             compilationUnitElement.context,
+            server.getAstProvider(file),
             unit);
         try {
           AssistProcessor processor = new AssistProcessor(dartAssistContext);
           List<Assist> assists = await processor.compute();
           for (Assist assist in assists) {
             changes.add(assist.change);
           }
         } catch (_) {}
       }
       //
@@ skipping 404 matching lines @@
   @override
   final int selectionOffset;
 
   @override
   final int selectionLength;
 
   @override
   final engine.AnalysisContext analysisContext;
 
   @override
+  final AstProvider astProvider;
+
+  @override
   final CompilationUnit unit;
 
   _DartAssistContextForValues(this.source, this.selectionOffset,
-      this.selectionLength, this.analysisContext, this.unit);
+      this.selectionLength, this.analysisContext, this.astProvider, this.unit);
 }
 
 /**
  * And implementation of [DartFixContext].
  */
 class _DartFixContextImpl implements DartFixContext {
   @override
   final ResourceProvider resourceProvider;
 
   @override
@@ skipping 462 matching lines @@
     }
     return new RefactoringStatus();
   }
 }
 
 /**
  * [_RefactoringManager] throws instances of this class internally to stop
  * processing in a manager that was reset.
  */
 class _ResetError {}