149 lines
5.5 KiB
TypeScript
149 lines
5.5 KiB
TypeScript
import * as vscode from "vscode";
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import * as os from "os";
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import { Config } from "./config";
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import { log, isValidExecutable } from "./util";
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import { PersistentState } from "./persistent_state";
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import { exec } from "child_process";
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export async function bootstrap(
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context: vscode.ExtensionContext,
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config: Config,
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state: PersistentState
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): Promise<string> {
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const path = await getServer(context, config, state);
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if (!path) {
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throw new Error(
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"Rust Analyzer Language Server is not available. " +
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"Please, ensure its [proper installation](https://rust-analyzer.github.io/manual.html#installation)."
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);
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}
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log.info("Using server binary at", path);
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if (!isValidExecutable(path)) {
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if (config.serverPath) {
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throw new Error(`Failed to execute ${path} --version. \`config.server.path\` or \`config.serverPath\` has been set explicitly.\
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Consider removing this config or making a valid server binary available at that path.`);
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} else {
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throw new Error(`Failed to execute ${path} --version`);
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}
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}
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return path;
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}
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async function patchelf(dest: vscode.Uri): Promise<void> {
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await vscode.window.withProgress(
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{
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location: vscode.ProgressLocation.Notification,
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title: "Patching rust-analyzer for NixOS",
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},
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async (progress, _) => {
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const expression = `
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{srcStr, pkgs ? import <nixpkgs> {}}:
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pkgs.stdenv.mkDerivation {
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name = "rust-analyzer";
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src = /. + srcStr;
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phases = [ "installPhase" "fixupPhase" ];
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installPhase = "cp $src $out";
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fixupPhase = ''
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chmod 755 $out
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patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" $out
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'';
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}
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`;
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const origFile = vscode.Uri.file(dest.fsPath + "-orig");
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await vscode.workspace.fs.rename(dest, origFile, { overwrite: true });
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try {
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progress.report({ message: "Patching executable", increment: 20 });
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await new Promise((resolve, reject) => {
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const handle = exec(
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`nix-build -E - --argstr srcStr '${origFile.fsPath}' -o '${dest.fsPath}'`,
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(err, stdout, stderr) => {
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if (err != null) {
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reject(Error(stderr));
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} else {
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resolve(stdout);
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}
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}
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);
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handle.stdin?.write(expression);
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handle.stdin?.end();
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});
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} finally {
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await vscode.workspace.fs.delete(origFile);
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}
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}
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);
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}
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async function getServer(
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context: vscode.ExtensionContext,
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config: Config,
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state: PersistentState
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): Promise<string | undefined> {
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const explicitPath = serverPath(config);
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if (explicitPath) {
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if (explicitPath.startsWith("~/")) {
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return os.homedir() + explicitPath.slice("~".length);
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}
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return explicitPath;
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}
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if (config.package.releaseTag === null) return "rust-analyzer";
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const ext = process.platform === "win32" ? ".exe" : "";
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const bundled = vscode.Uri.joinPath(context.extensionUri, "server", `rust-analyzer${ext}`);
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const bundledExists = await vscode.workspace.fs.stat(bundled).then(
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() => true,
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() => false
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);
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if (bundledExists) {
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let server = bundled;
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if (await isNixOs()) {
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await vscode.workspace.fs.createDirectory(config.globalStorageUri).then();
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const dest = vscode.Uri.joinPath(config.globalStorageUri, `rust-analyzer${ext}`);
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let exists = await vscode.workspace.fs.stat(dest).then(
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() => true,
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() => false
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);
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if (exists && config.package.version !== state.serverVersion) {
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await vscode.workspace.fs.delete(dest);
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exists = false;
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}
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if (!exists) {
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await vscode.workspace.fs.copy(bundled, dest);
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await patchelf(dest);
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}
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server = dest;
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}
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await state.updateServerVersion(config.package.version);
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return server.fsPath;
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}
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await state.updateServerVersion(undefined);
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await vscode.window.showErrorMessage(
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"Unfortunately we don't ship binaries for your platform yet. " +
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"You need to manually clone the rust-analyzer repository and " +
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"run `cargo xtask install --server` to build the language server from sources. " +
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"If you feel that your platform should be supported, please create an issue " +
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"about that [here](https://github.com/rust-lang/rust-analyzer/issues) and we " +
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"will consider it."
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);
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return undefined;
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}
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function serverPath(config: Config): string | null {
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return process.env.__RA_LSP_SERVER_DEBUG ?? config.serverPath;
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}
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async function isNixOs(): Promise<boolean> {
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try {
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const contents = (
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await vscode.workspace.fs.readFile(vscode.Uri.file("/etc/os-release"))
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).toString();
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const idString = contents.split("\n").find((a) => a.startsWith("ID=")) || "ID=linux";
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return idString.indexOf("nixos") !== -1;
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} catch {
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return false;
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}
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}
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