As a temporary measure, allow SDK to be specified on analysis server cmd line.

pkg/analysis_server/lib/src/analysis_server.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 analysis.server;
 
 import 'dart:async';
 import 'dart:collection';
 
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analysis_server/src/analysis_logger.dart';
 import 'package:analysis_server/src/channel.dart';
 import 'package:analysis_server/src/constants.dart';
 import 'package:analysis_server/src/context_directory_manager.dart';
 import 'package:analysis_server/src/domain_analysis.dart';
 import 'package:analysis_server/src/operation/operation_analysis.dart';
 import 'package:analysis_server/src/operation/operation.dart';
 import 'package:analysis_server/src/operation/operation_queue.dart';
 import 'package:analysis_server/src/package_map_provider.dart';
 import 'package:analysis_server/src/package_uri_resolver.dart';
 import 'package:analysis_server/src/protocol.dart';
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/error.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/sdk.dart';
-import 'package:analyzer/src/generated/sdk_io.dart';
 import 'package:analyzer/src/generated/source_io.dart';
 import 'package:analyzer/src/generated/java_engine.dart';
 import 'package:analysis_services/index/index.dart';
 import 'package:analysis_services/search/search_engine.dart';
 import 'package:analyzer/src/generated/element.dart';
 
 
-/**
- * An instance of [DirectoryBasedDartSdk] that is shared between
- * [AnalysisServer] instances to improve performance.
- */
-final DirectoryBasedDartSdk SHARED_SDK = DirectoryBasedDartSdk.defaultSdk;
-
 class AnalysisServerContextDirectoryManager extends ContextDirectoryManager {
   final AnalysisServer analysisServer;
 
   /**
    * The default options used to create new analysis contexts.
    */
   AnalysisOptionsImpl defaultOptions = new AnalysisOptionsImpl();
 
   AnalysisServerContextDirectoryManager(
       this.analysisServer, ResourceProvider resourceProvider,
@@ skipping 85 matching lines @@
 
   /**
    * A list of the request handlers used to handle the requests sent to this
    * server.
    */
   List<RequestHandler> handlers;
 
   /**
    * The current default [DartSdk].
    */
-  DartSdk defaultSdk = SHARED_SDK;
+  final DartSdk defaultSdk;
 
   /**
    * A table mapping [Folder]s to the [AnalysisContext]s associated with them.
    */
   final Map<Folder, AnalysisContext> folderMap =
       new HashMap<Folder, AnalysisContext>();
 
   /**
    * A queue of the operations to perform in this server.
    *
@@ skipping 24 matching lines @@
   /**
    * Initialize a newly created server to receive requests from and send
    * responses to the given [channel].
    *
    * If [rethrowExceptions] is true, then any exceptions thrown by analysis are
    * propagated up the call stack.  The default is true to allow analysis
    * exceptions to show up in unit tests, but it should be set to false when
    * running a full analysis server.
    */
   AnalysisServer(this.channel, ResourceProvider resourceProvider,
-      PackageMapProvider packageMapProvider, this.index,
+      PackageMapProvider packageMapProvider, this.index, this.defaultSdk,
       {this.rethrowExceptions: true}) {
     searchEngine = createSearchEngine(index);
     operationQueue = new ServerOperationQueue(this);
     contextDirectoryManager = new AnalysisServerContextDirectoryManager(
         this, resourceProvider, packageMapProvider);
     AnalysisEngine.instance.logger = new AnalysisLogger();
     running = true;
     Notification notification = new Notification(SERVER_CONNECTED);
     channel.sendNotification(notification);
     channel.listen(handleRequest, onDone: done, onError: error);
@@ skipping 462 matching lines @@
 /**
  * An enumeration of the services provided by the server domain.
  */
 class ServerService extends Enum2<ServerService> {
   static const ServerService STATUS = const ServerService('STATUS', 0);
 
   static const List<ServerService> VALUES = const [STATUS];
 
   const ServerService(String name, int ordinal) : super(name, ordinal);
 }