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import * as vscode from 'vscode';
import * as lc from 'vscode-languageclient';
import { Server } from './server';
import { Config } from './config';
export class Ctx {
private extCtx: vscode.ExtensionContext;
constructor(extCtx: vscode.ExtensionContext) {
this.extCtx = extCtx;
}
get client(): lc.LanguageClient {
return Server.client;
}
get config(): Config {
return Server.config;
}
get activeRustEditor(): vscode.TextEditor | undefined {
const editor = vscode.window.activeTextEditor;
return editor && editor.document.languageId === 'rust'
? editor
: undefined;
}
registerCommand(name: string, factory: (ctx: Ctx) => Cmd) {
const fullName = `rust-analyzer.${name}`;
const cmd = factory(this);
const d = vscode.commands.registerCommand(fullName, cmd);
this.pushCleanup(d);
}
overrideCommand(name: string, factory: (ctx: Ctx) => Cmd) {
const defaultCmd = `default:${name}`;
const override = factory(this);
const original = (...args: any[]) =>
vscode.commands.executeCommand(defaultCmd, ...args);
try {
const d = vscode.commands.registerCommand(
name,
async (...args: any[]) => {
if (!(await override(...args))) {
return await original(...args);
}
},
);
this.pushCleanup(d);
} catch (_) {
vscode.window.showWarningMessage(
'Enhanced typing feature is disabled because of incompatibility with VIM extension, consider turning off rust-analyzer.enableEnhancedTyping: https://github.com/rust-analyzer/rust-analyzer/blob/master/docs/user/README.md#settings',
);
}
}
get subscriptions(): { dispose(): any }[] {
return this.extCtx.subscriptions;
}
pushCleanup(d: { dispose(): any }) {
this.extCtx.subscriptions.push(d);
}
async sendRequestWithRetry<R>(
method: string,
param: any,
token?: vscode.CancellationToken,
): Promise<R> {
await this.client.onReady();
for (const delay of [2, 4, 6, 8, 10, null]) {
try {
return await (token ? this.client.sendRequest(method, param, token) : this.client.sendRequest(method, param));
} catch (e) {
if (
e.code === lc.ErrorCodes.ContentModified &&
delay !== null
) {
await sleep(10 * (1 << delay));
continue;
}
throw e;
}
}
throw 'unreachable';
}
}
export type Cmd = (...args: any[]) => any;
const sleep = (ms: number) => new Promise(resolve => setTimeout(resolve, ms));
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