import * as vscode from 'vscode'; import * as lc from 'vscode-languageclient'; import * as commands from './commands'; import { HintsUpdater } from './inlay_hints'; import { StatusDisplay } from './status_display'; import * as events from './events'; import * as notifications from './notifications'; import { Server } from './server'; import { Ctx } from './ctx'; let ctx!: Ctx; export async function activate(context: vscode.ExtensionContext) { ctx = new Ctx(context); // Commands which invokes manually via command pallet, shortcut, etc. ctx.registerCommand('analyzerStatus', commands.analyzerStatus); ctx.registerCommand('collectGarbage', commands.collectGarbage); ctx.registerCommand('matchingBrace', commands.matchingBrace); ctx.registerCommand('joinLines', commands.joinLines); ctx.registerCommand('parentModule', commands.parentModule); ctx.registerCommand('syntaxTree', commands.syntaxTree); ctx.registerCommand('expandMacro', commands.expandMacro); ctx.registerCommand('run', commands.run); // Internal commands which are invoked by the server. ctx.registerCommand('runSingle', commands.runSingle); ctx.registerCommand('showReferences', commands.showReferences); if (Server.config.enableEnhancedTyping) { ctx.overrideCommand('type', commands.onEnter); } const watchStatus = new StatusDisplay( Server.config.cargoWatchOptions.command, ); ctx.pushCleanup(watchStatus); function disposeOnDeactivation(disposable: vscode.Disposable) { context.subscriptions.push(disposable); } // Notifications are events triggered by the language server const allNotifications: [string, lc.GenericNotificationHandler][] = [ [ 'rust-analyzer/publishDecorations', notifications.publishDecorations.handle, ], [ '$/progress', params => watchStatus.handleProgressNotification(params), ], ]; // The events below are plain old javascript events, triggered and handled by vscode vscode.window.onDidChangeActiveTextEditor( events.changeActiveTextEditor.makeHandler(), ); const startServer = () => Server.start(allNotifications); const reloadCommand = () => reloadServer(startServer); vscode.commands.registerCommand('rust-analyzer.reload', reloadCommand); // Start the language server, finally! try { await startServer(); } catch (e) { vscode.window.showErrorMessage(e.message); } if (Server.config.displayInlayHints) { const hintsUpdater = new HintsUpdater(); hintsUpdater.refreshHintsForVisibleEditors().then(() => { // vscode may ignore top level hintsUpdater.refreshHintsForVisibleEditors() // so update the hints once when the focus changes to guarantee their presence let editorChangeDisposable: vscode.Disposable | null = null; editorChangeDisposable = vscode.window.onDidChangeActiveTextEditor( _ => { if (editorChangeDisposable !== null) { editorChangeDisposable.dispose(); } return hintsUpdater.refreshHintsForVisibleEditors(); }, ); disposeOnDeactivation( vscode.window.onDidChangeVisibleTextEditors(_ => hintsUpdater.refreshHintsForVisibleEditors(), ), ); disposeOnDeactivation( vscode.workspace.onDidChangeTextDocument(e => hintsUpdater.refreshHintsForVisibleEditors(e), ), ); disposeOnDeactivation( vscode.workspace.onDidChangeConfiguration(_ => hintsUpdater.toggleHintsDisplay( Server.config.displayInlayHints, ), ), ); }); } } export function deactivate(): Thenable { if (!Server.client) { return Promise.resolve(); } return Server.client.stop(); } async function reloadServer(startServer: () => Promise) { if (Server.client != null) { vscode.window.showInformationMessage('Reloading rust-analyzer...'); await Server.client.stop(); await startServer(); } }