Implement SearchEngine.searchMemberDeclarations() for the new driver.

pkg/analyzer/lib/src/dart/analysis/search.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 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/visitor.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/visitor.dart';
@@ skipping 16 matching lines @@
 
 /**
  * Search support for an [AnalysisDriver].
  */
 class Search {
   final AnalysisDriver _driver;
 
   Search(this._driver);
 
   /**
+   * Returns class members with names matching the given [regExp].
+   */
+  Future<List<Element>> classMembers(RegExp regExp) async {
+    List<Element> elements = <Element>[];
+
+    void addElement(Element element) {
+      if (!element.isSynthetic && regExp.hasMatch(element.displayName)) {
+        elements.add(element);
+      }
+    }
+
+    for (FileState file in _driver.fsState.knownFiles) {
+      CompilationUnitElement unitElement =
+          await _driver.getUnitElement(file.path);
+      for (ClassElement clazz in unitElement.types) {
+        clazz.accessors.forEach(addElement);
+        clazz.fields.forEach(addElement);
+        clazz.methods.forEach(addElement);
+      }
+    }
+    return elements;
+  }
+
+  /**
    * Returns references to the [element].
    */
   Future<List<SearchResult>> references(Element element) async {
     if (element == null) {
       return const <SearchResult>[];
     }
 
     ElementKind kind = element.kind;
     if (kind == ElementKind.CLASS ||
         kind == ElementKind.CONSTRUCTOR ||
@@ skipping 674 matching lines @@
   }
 
   void _addResult(AstNode node, SearchResultKind kind) {
     bool isQualified = node.parent is Label;
     Element enclosingElement =
         _getEnclosingElement(enclosingUnitElement, node.offset);
     results.add(new SearchResult._(
         enclosingElement, kind, node.offset, node.length, true, isQualified));
   }
 }