next step toward completion plugin API

pkg/analysis_server/lib/src/services/completion/dart_completion_manager.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 services.completion.dart;
 
 import 'dart:async';
 
 import 'package:analysis_server/plugin/protocol/protocol.dart';
 import 'package:analysis_server/src/analysis_server.dart';
@@ skipping 13 matching lines @@
 import 'package:analysis_server/src/services/completion/local_reference_contributor.dart';
 import 'package:analysis_server/src/services/completion/optype.dart';
 import 'package:analysis_server/src/services/completion/prefixed_element_contributor.dart';
 import 'package:analysis_server/src/services/completion/uri_contributor.dart';
 import 'package:analysis_server/src/services/search/search_engine.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/scanner.dart';
 import 'package:analyzer/src/generated/source.dart';
+import 'package:analyzer/task/model.dart';
 
 const int DART_RELEVANCE_COMMON_USAGE = 1200;
 const int DART_RELEVANCE_DEFAULT = 1000;
 const int DART_RELEVANCE_HIGH = 2000;
 const int DART_RELEVANCE_INHERITED_ACCESSOR = 1057;
 const int DART_RELEVANCE_INHERITED_FIELD = 1058;
 const int DART_RELEVANCE_INHERITED_METHOD = 1057;
 const int DART_RELEVANCE_KEYWORD = 1055;
 const int DART_RELEVANCE_LOCAL_ACCESSOR = 1057;
 const int DART_RELEVANCE_LOCAL_FIELD = 1058;
@@ skipping 369 matching lines @@
             requiredParameterCount: suggestion.requiredParameterCount,
             hasNamedParameters: suggestion.hasNamedParameters,
             returnType: suggestion.returnType,
             element: suggestion.element);
       }
     }
   }
 }
 
 /**
- * A wrapper around a new dart completion contributor that makes it usable where
- * an old dart completion contributor is expected.
- */
-class NewCompletionWrapper implements DartCompletionContributor {
-  /**
-   * The new-style contributor that is being wrapped.
-   */
-  final newApi.DartCompletionContributor contributor;
-
-  /**
-   * Initialize a newly created wrapper for the given [contributor].
-   */
-  NewCompletionWrapper(this.contributor);
-
-  @override
-  bool computeFast(DartCompletionRequest request) {
-    List<CompletionSuggestion> suggestions =
-        contributor.computeSuggestions(new OldRequestWrapper(request));
-    if (suggestions == null) {
-      return false;
-    }
-    for (CompletionSuggestion suggestion in suggestions) {
-      request.addSuggestion(suggestion);
-    }
-    return true;
-  }
-
-  @override
-  Future<bool> computeFull(DartCompletionRequest request) async {
-    List<CompletionSuggestion> suggestions =
-        contributor.computeSuggestions(new OldRequestWrapper(request));
-    if (suggestions != null) {
-      for (CompletionSuggestion suggestion in suggestions) {
-        request.addSuggestion(suggestion);
-      }
-      return true;
-    }
-    return false;
-  }
-
-  @override
-  String toString() => 'wrapped $contributor';
-}
-
-/**
  * A wrapper around an old dart completion request that makes it usable where a
  * new dart completion request is expected.
  */
 class OldRequestWrapper implements newApi.DartCompletionRequest {
   final DartCompletionRequest request;
 
   OldRequestWrapper(this.request);
 
   @override
   AnalysisContext get context => request.context;
 
   @override
-  bool get isResolved => request.unit.element != null;
-
-  @override
   int get offset => request.offset;
 
   @override
+  CompilationUnit get unit => request.unit;
+
+  @override
   ResourceProvider get resourceProvider => request.resourceProvider;
 
   @override
   Source get source => request.source;
 
   @override
   CompletionTarget get target => request.target;
 
   @override
-  CompilationUnit get unit => request.unit;
+  String toString() => 'wrapped $request';
 
   @override
-  String toString() => 'wrapped $request';
+  CompletionTarget get parsedTarget => request.target;
+
+  @override
+  Future<CompletionTarget> get resolvedDeclarationTarget {
+    throw 'not implemented yet';
+  }
 }