Add context information to driver and add hooks for plugin management

pkg/analysis_server/lib/src/plugin/plugin_manager.dart

Index: pkg/analysis_server/lib/src/plugin/plugin_manager.dart
diff --git a/pkg/analysis_server/lib/src/plugin/plugin_manager.dart b/pkg/analysis_server/lib/src/plugin/plugin_manager.dart
index 2d9f8ca1967b8d98f289bb2e1035f1a5994cbdda..d503d926eb1889d1a27d691c66c348f2d1e55191 100644
--- a/pkg/analysis_server/lib/src/plugin/plugin_manager.dart
+++ b/pkg/analysis_server/lib/src/plugin/plugin_manager.dart
@@ -7,6 +7,7 @@ import 'dart:collection';
 import 'dart:io' show Platform;
 
 import 'package:analysis_server/src/plugin/notification_manager.dart';
+import 'package:analyzer/context/context_root.dart' as analyzer;
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/instrumentation/instrumentation.dart';
 import 'package:analyzer/src/generated/bazel.dart';
@@ -57,7 +58,7 @@ class PluginInfo {
    * The context roots that are currently using the results produced by the
    * plugin.
    */
-  Set<ContextRoot> contextRoots = new HashSet<ContextRoot>();
+  Set<analyzer.ContextRoot> contextRoots = new HashSet<analyzer.ContextRoot>();
 
   /**
    * The current execution of the plugin, or `null` if the plugin is not
@@ -75,7 +76,7 @@ class PluginInfo {
    * Add the given [contextRoot] to the set of context roots being analyzed by
    * this plugin.
    */
-  void addContextRoot(ContextRoot contextRoot) {
+  void addContextRoot(analyzer.ContextRoot contextRoot) {
     if (contextRoots.add(contextRoot)) {
       _updatePluginRoots();
     }
@@ -85,7 +86,7 @@ class PluginInfo {
    * Remove the given [contextRoot] from the set of context roots being analyzed
    * by this plugin.
    */
-  void removeContextRoot(ContextRoot contextRoot) {
+  void removeContextRoot(analyzer.ContextRoot contextRoot) {
     if (contextRoots.remove(contextRoot)) {
       _updatePluginRoots();
     }
@@ -121,8 +122,11 @@ class PluginInfo {
    */
   void _updatePluginRoots() {
     if (currentSession != null) {
-      AnalysisSetContextRootsParams params =
-          new AnalysisSetContextRootsParams(contextRoots.toList());
+      AnalysisSetContextRootsParams params = new AnalysisSetContextRootsParams(
+          contextRoots
+              .map((analyzer.ContextRoot contextRoot) =>
+                  new ContextRoot(contextRoot.root, contextRoot.exclude))
+              .toList());
       currentSession.sendRequest(params);
     }
   }
@@ -171,7 +175,7 @@ class PluginManager {
    * yet been started, then it will be started by this method.
    */
   Future<Null> addPluginToContextRoot(
-      ContextRoot contextRoot, String path) async {
+      analyzer.ContextRoot contextRoot, String path) async {
     PluginInfo plugin = _pluginMap[path];
     if (plugin == null) {
       List<String> pluginPaths = _pathsFor(path);
@@ -195,7 +199,7 @@ class PluginManager {
    * response.
    */
   List<Future<Response>> broadcast(
-      ContextRoot contextRoot, RequestParams params) {
+      analyzer.ContextRoot contextRoot, RequestParams params) {
     List<PluginInfo> plugins = pluginsForContextRoot(contextRoot);
     return plugins
         .map((PluginInfo plugin) => plugin.currentSession?.sendRequest(params))
@@ -207,7 +211,7 @@ class PluginManager {
    * given [contextRoot].
    */
   @visibleForTesting
-  List<PluginInfo> pluginsForContextRoot(ContextRoot contextRoot) {
+  List<PluginInfo> pluginsForContextRoot(analyzer.ContextRoot contextRoot) {
     List<PluginInfo> plugins = <PluginInfo>[];
     for (PluginInfo plugin in _pluginMap.values) {
       if (plugin.contextRoots.contains(contextRoot)) {
@@ -220,7 +224,7 @@ class PluginManager {
   /**
    * The given [contextRoot] is no longer being analyzed.
    */
-  void removedContextRoot(ContextRoot contextRoot) {
+  void removedContextRoot(analyzer.ContextRoot contextRoot) {
     List<PluginInfo> plugins = _pluginMap.values.toList();
     for (PluginInfo plugin in plugins) {
       plugin.removeContextRoot(contextRoot);