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import * as vscode from 'vscode';
import * as lc from 'vscode-languageclient';
import * as commands from './commands';
import { HintsUpdater } from './commands/inlay_hints';
import { StatusDisplay } from './commands/watch_status';
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);
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);
ctx.registerCommand('runSingle', commands.runSingle); // Internal action for lenses
function disposeOnDeactivation(disposable: vscode.Disposable) {
context.subscriptions.push(disposable);
}
function registerCommand(name: string, f: any) {
disposeOnDeactivation(vscode.commands.registerCommand(name, f));
}
registerCommand(
'rust-analyzer.showReferences',
(uri: string, position: lc.Position, locations: lc.Location[]) => {
vscode.commands.executeCommand(
'editor.action.showReferences',
vscode.Uri.parse(uri),
Server.client.protocol2CodeConverter.asPosition(position),
locations.map(Server.client.protocol2CodeConverter.asLocation),
);
},
);
if (Server.config.enableEnhancedTyping) {
ctx.overrideCommand('type', commands.onEnter);
}
const watchStatus = new StatusDisplay(
Server.config.cargoWatchOptions.command,
);
disposeOnDeactivation(watchStatus);
// 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<void> {
if (!Server.client) {
return Promise.resolve();
}
return Server.client.stop();
}
async function reloadServer(startServer: () => Promise<void>) {
if (Server.client != null) {
vscode.window.showInformationMessage('Reloading rust-analyzer...');
await Server.client.stop();
await startServer();
}
}
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