extract named constructor suggestions from prefixed element contributor

pkg/analysis_server/lib/src/services/completion/suggestion_builder.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.suggestion.builder;
 
 import 'dart:async';
 import 'dart:collection';
 
 import 'package:analysis_server/src/protocol_server.dart'
@@ skipping 450 matching lines @@
       bool instCreation) {
     if (library != null) {
       library.visitChildren(new LibraryElementSuggestionBuilder(
           request, kind, typesOnly, instCreation));
     }
   }
 }
 
 /**
  * This class visits elements in a class and provides suggestions based upon
- * the visible named constructors in that class.
- */
-class NamedConstructorSuggestionBuilder extends GeneralizingElementVisitor
-    with ElementSuggestionBuilder
-    implements SuggestionBuilder {
-  final DartCompletionRequest request;
-
-  NamedConstructorSuggestionBuilder(this.request);
-
-  @override
-  CompletionSuggestionKind get kind => CompletionSuggestionKind.INVOCATION;
-
-  @override
-  bool computeFast(AstNode node) {
-    return false;
-  }
-
-  @override
-  Future<bool> computeFull(AstNode node) {
-    if (node is SimpleIdentifier) {
-      node = node.parent;
-    }
-    if (node is ConstructorName) {
-      TypeName typeName = node.type;
-      if (typeName != null) {
-        DartType type = typeName.type;
-        if (type != null) {
-          if (type.element is ClassElement) {
-            type.element.accept(this);
-          }
-          return new Future.value(true);
-        }
-      }
-    }
-    return new Future.value(false);
-  }
-
-  @override
-  visitClassElement(ClassElement element) {
-    element.visitChildren(this);
-  }
-
-  @override
-  visitConstructorElement(ConstructorElement element) {
-    addSuggestion(element);
-  }
-
-  @override
-  visitElement(Element element) {
-    // ignored
-  }
-}
-
-/**
- * This class visits elements in a class and provides suggestions based upon
  * the visible static members in that class. Clients should call
  * [StaticClassElementSuggestionBuilder.suggestionsFor].
  */
 class StaticClassElementSuggestionBuilder extends GeneralizingElementVisitor
     with ElementSuggestionBuilder {
   final DartCompletionRequest request;
 
   StaticClassElementSuggestionBuilder(this.request);
 
   @override
@@ skipping 61 matching lines @@
    * or `false` if [computeFull] should be called.
    */
   bool computeFast(AstNode node);
 
   /**
    * Return a future that computes the suggestions given a fully resolved AST.
    * The future returns `true` if suggestions were added, else `false`.
    */
   Future<bool> computeFull(AstNode node);
 }