Add some comments

1 files changed, 14 insertions, 3 deletions

diff --git a/editors/code/src/extension.ts b/editors/code/src/extension.ts
index f1bc0b457..44e74f4cc 100644
--- a/editors/code/src/extension.ts
+++ b/editors/code/src/extension.ts
@@ -1,8 +1,10 @@
 import * as vscode from 'vscode';
+import * as lc from 'vscode-languageclient';
 
 import * as commands from './commands';
 import { TextDocumentContentProvider } from './commands/syntaxTree';
 import * as events from './events';
+import * as notifications from './notifications';
 import { Server } from './server';
 
 export function activate(context: vscode.ExtensionContext) {
@@ -14,6 +16,7 @@ export function activate(context: vscode.ExtensionContext) {
         disposeOnDeactivation(vscode.commands.registerCommand(name, f));
     }
 
+    // Commands are requests from vscode to the language server
     registerCommand('ra-lsp.syntaxTree', commands.syntaxTree.handle);
     registerCommand('ra-lsp.extendSelection', commands.extendSelection.handle);
     registerCommand('ra-lsp.matchingBrace', commands.matchingBrace.handle);
@@ -22,19 +25,27 @@ export function activate(context: vscode.ExtensionContext) {
     registerCommand('ra-lsp.run', commands.runnables.handle);
     registerCommand('ra-lsp.applySourceChange', commands.applySourceChange.handle);
 
+    // Notifications are events triggered by the language server
+    const allNotifications: Iterable<[string, lc.GenericNotificationHandler]> = [
+        ['m/publishDecorations', notifications.publishDecorations.handle],
+    ];
+
+    // The events below are plain old javascript events, triggered and handled by vscode
+    vscode.window.onDidChangeActiveTextEditor(events.changeActiveTextEditor.handle);
+
     const textDocumentContentProvider = new TextDocumentContentProvider();
     disposeOnDeactivation(vscode.workspace.registerTextDocumentContentProvider(
         'ra-lsp',
         textDocumentContentProvider,
     ));
 
-    Server.start();
-
     vscode.workspace.onDidChangeTextDocument(
         events.changeTextDocument.createHandler(textDocumentContentProvider),
         null,
         context.subscriptions);
-    vscode.window.onDidChangeActiveTextEditor(events.changeActiveTextEditor.handle);
+
+    // Start the language server, finally!
+    Server.start(allNotifications);
 }
 
 export function deactivate(): Thenable<void> {