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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) {
function disposeOnDeactivation(disposable: vscode.Disposable) {
context.subscriptions.push(disposable);
}
function registerCommand(name: string, f: any) {
disposeOnDeactivation(vscode.commands.registerCommand(name, f));
}
function overrideCommand(
name: string,
f: (...args: any[]) => Promise<boolean>
) {
const defaultCmd = `default:${name}`;
const original = async (...args: any[]) =>
await vscode.commands.executeCommand(defaultCmd, ...args);
registerCommand(name, async (...args: any[]) => {
const editor = vscode.window.activeTextEditor;
if (
!editor ||
!editor.document ||
editor.document.languageId !== 'rust'
) {
return await original(...args);
}
if (!(await f(...args))) {
return await original(...args);
}
});
}
// 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);
registerCommand('ra-lsp.joinLines', commands.joinLines.handle);
registerCommand('ra-lsp.parentModule', commands.parentModule.handle);
registerCommand('ra-lsp.run', commands.runnables.handle);
registerCommand(
'ra-lsp.applySourceChange',
commands.applySourceChange.handle
);
overrideCommand('type', commands.onEnter.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
)
);
vscode.workspace.onDidChangeTextDocument(
events.changeTextDocument.createHandler(textDocumentContentProvider),
null,
context.subscriptions
);
// Start the language server, finally!
Server.start(allNotifications);
}
export function deactivate(): Thenable<void> {
if (!Server.client) {
return Promise.resolve();
}
return Server.client.stop();
}
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