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import * as os from "os";
import * as vscode from 'vscode';
import { BinarySource } from "./installation/interfaces";
const RA_LSP_DEBUG = process.env.__RA_LSP_SERVER_DEBUG;
export interface CargoWatchOptions {
enable: boolean;
arguments: string[];
command: string;
allTargets: boolean;
}
export interface CargoFeatures {
noDefaultFeatures: boolean;
allFeatures: boolean;
features: string[];
}
export class Config {
private static readonly rootSection = "rust-analyzer";
private static readonly requiresReloadOpts = [
"cargoFeatures",
"cargo-watch",
]
.map(opt => `${Config.rootSection}.${opt}`);
private cfg!: vscode.WorkspaceConfiguration;
constructor(private readonly ctx: vscode.ExtensionContext) {
vscode.workspace.onDidChangeConfiguration(this.onConfigChange, this, ctx.subscriptions);
this.refreshConfig();
}
private refreshConfig() {
this.cfg = vscode.workspace.getConfiguration(Config.rootSection);
console.log("Using configuration:", this.cfg);
}
private async onConfigChange(event: vscode.ConfigurationChangeEvent) {
this.refreshConfig();
const requiresReloadOpt = Config.requiresReloadOpts.find(
opt => event.affectsConfiguration(opt)
);
if (!requiresReloadOpt) return;
const userResponse = await vscode.window.showInformationMessage(
`Changing "${requiresReloadOpt}" requires a reload`,
"Reload now"
);
if (userResponse === "Reload now") {
vscode.commands.executeCommand("workbench.action.reloadWindow");
}
}
private static replaceTildeWithHomeDir(path: string) {
if (path.startsWith("~/")) {
return os.homedir() + path.slice("~".length);
}
return path;
}
/**
* Name of the binary artifact for `ra_lsp_server` that is published for
* `platform` on GitHub releases. (It is also stored under the same name when
* downloaded by the extension).
*/
get prebuiltServerFileName(): null | string {
// See possible `arch` values here:
// https://nodejs.org/api/process.html#process_process_arch
switch (process.platform) {
case "linux": {
switch (process.arch) {
case "arm":
case "arm64": return null;
default: return "ra_lsp_server-linux";
}
}
case "darwin": return "ra_lsp_server-mac";
case "win32": return "ra_lsp_server-windows.exe";
// Users on these platforms yet need to manually build from sources
case "aix":
case "android":
case "freebsd":
case "openbsd":
case "sunos":
case "cygwin":
case "netbsd": return null;
// The list of platforms is exhaustive (see `NodeJS.Platform` type definition)
}
}
get serverBinarySource(): null | BinarySource {
const serverPath = RA_LSP_DEBUG ?? this.cfg.get<null | string>("raLspServerPath");
if (serverPath) {
return {
type: BinarySource.Type.ExplicitPath,
path: Config.replaceTildeWithHomeDir(serverPath)
};
}
const prebuiltBinaryName = this.prebuiltServerFileName;
if (!prebuiltBinaryName) return null;
return {
type: BinarySource.Type.GithubRelease,
dir: this.ctx.globalStoragePath,
file: prebuiltBinaryName,
repo: {
name: "rust-analyzer",
owner: "rust-analyzer",
}
};
}
// We don't do runtime config validation here for simplicity. More on stackoverflow:
// https://stackoverflow.com/questions/60135780/what-is-the-best-way-to-type-check-the-configuration-for-vscode-extension
get highlightingOn() { return this.cfg.get("highlightingOn") as boolean; }
get rainbowHighlightingOn() { return this.cfg.get("rainbowHighlightingOn") as boolean; }
get lruCapacity() { return this.cfg.get("lruCapacity") as null | number; }
get displayInlayHints() { return this.cfg.get("displayInlayHints") as boolean; }
get maxInlayHintLength() { return this.cfg.get("maxInlayHintLength") as number; }
get excludeGlobs() { return this.cfg.get("excludeGlobs") as string[]; }
get useClientWatching() { return this.cfg.get("useClientWatching") as boolean; }
get featureFlags() { return this.cfg.get("featureFlags") as Record<string, boolean>; }
get cargoWatchOptions(): CargoWatchOptions {
return {
enable: this.cfg.get("cargo-watch.enable") as boolean,
arguments: this.cfg.get("cargo-watch.arguments") as string[],
allTargets: this.cfg.get("cargo-watch.allTargets") as boolean,
command: this.cfg.get("cargo-watch.command") as string,
};
}
get cargoFeatures(): CargoFeatures {
return {
noDefaultFeatures: this.cfg.get("cargoFeatures.noDefaultFeatures") as boolean,
allFeatures: this.cfg.get("cargoFeatures.allFeatures") as boolean,
features: this.cfg.get("cargoFeatures.features") as string[],
};
}
// for internal use
get withSysroot() { return this.cfg.get("withSysroot", false); }
}
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