include lower relevance suggestions only if they are already cached

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/src/protocol.dart';
 import 'package:analysis_server/src/services/completion/arglist_computer.dart';
@@ skipping 57 matching lines @@
    */
   factory DartCompletionManager.create(AnalysisContext context,
       SearchEngine searchEngine, Source source) {
     return new DartCompletionManager(
         context,
         searchEngine,
         source,
         new DartCompletionCache(context, source));
   }
 
-  @override
-  void computeSuggestions(CompletionRequest completionRequest) {
-    DartCompletionRequest request = new DartCompletionRequest(
-        context,
-        searchEngine,
-        source,
-        completionRequest.offset,
-        cache,
-        completionRequest.performance);
-    request.performance.logElapseTime('compute', () {
-      computeFast(request);
-      if (!computers.isEmpty) {
-        computeFull(request);
-      }
-    });
-  }
-
   /**
    * Compute suggestions based upon cached information only
    * then send an initial response to the client.
    */
   void computeFast(DartCompletionRequest request) {
     request.performance.logElapseTime('computeFast', () {
       CompilationUnit unit = context.parseCompilationUnit(source);
       request.unit = unit;
       request.node = new NodeLocator.con1(request.offset).searchWithin(unit);
       request.node.accept(new _ReplacementOffsetBuilder(request));
@@ skipping 35 matching lines @@
               if (changed || last) {
                 sendResults(request, last);
               }
             });
           });
         });
       });
     });
   }
 
+  @override
+  void computeSuggestions(CompletionRequest completionRequest) {
+    DartCompletionRequest request = new DartCompletionRequest(
+        context,
+        searchEngine,
+        source,
+        completionRequest.offset,
+        cache,
+        completionRequest.performance);
+    request.performance.logElapseTime('compute', () {
+      computeFast(request);
+      if (!computers.isEmpty) {
+        computeFull(request);
+      }
+    });
+  }
+
   /**
    * Send the current list of suggestions to the client.
    */
   void sendResults(DartCompletionRequest request, bool last) {
     controller.add(
         new CompletionResult(
             request.replacementOffset,
             request.replacementLength,
             request.suggestions,
             last));
@@ skipping 94 matching lines @@
   _ReplacementOffsetBuilder(this.request) {
     request.replacementOffset = request.offset;
     request.replacementLength = 0;
   }
 
   visitSimpleIdentifier(SimpleIdentifier node) {
     request.replacementOffset = node.offset;
     request.replacementLength = node.length;
   }
 }