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import { spawn, type ChildProcessWithoutNullStreams } from "child_process"
import type { App } from "../app/app"
import path from "path"
import { Global } from "../global"
import { Log } from "../util/log"
import { BunProc } from "../bun"
import { $ } from "bun"
import fs from "fs/promises"
import { Filesystem } from "../util/filesystem"
export namespace LSPServer {
const log = Log.create({ service: "lsp.server" })
export interface Handle {
process: ChildProcessWithoutNullStreams
initialization?: Record<string, any>
}
type RootFunction = (file: string, app: App.Info) => Promise<string | undefined>
const NearestRoot = (patterns: string[]): RootFunction => {
return async (file, app) => {
const files = Filesystem.up({
targets: patterns,
start: path.dirname(file),
stop: app.path.root,
})
const first = await files.next()
await files.return()
if (!first.value) return app.path.root
return path.dirname(first.value)
}
}
export interface Info {
id: string
extensions: string[]
global?: boolean
root: RootFunction
spawn(app: App.Info, root: string): Promise<Handle | undefined>
}
export const Typescript: Info = {
id: "typescript",
root: NearestRoot(["tsconfig.json", "package.json", "jsconfig.json"]),
extensions: [".ts", ".tsx", ".js", ".jsx", ".mjs", ".cjs", ".mts", ".cts"],
async spawn(app, root) {
const tsserver = await Bun.resolve("typescript/lib/tsserver.js", app.path.cwd).catch(() => {})
if (!tsserver) return
const proc = spawn(BunProc.which(), ["x", "typescript-language-server", "--stdio"], {
cwd: root,
env: {
...process.env,
BUN_BE_BUN: "1",
},
})
return {
process: proc,
initialization: {
tsserver: {
path: tsserver,
},
},
}
},
}
export const Gopls: Info = {
id: "golang",
root: async (file, app) => {
const work = await NearestRoot(["go.work"])(file, app)
if (work) return work
return NearestRoot(["go.mod", "go.sum"])(file, app)
},
extensions: [".go"],
async spawn(_, root) {
let bin = Bun.which("gopls", {
PATH: process.env["PATH"] + ":" + Global.Path.bin,
})
if (!bin) {
if (!Bun.which("go")) return
log.info("installing gopls")
const proc = Bun.spawn({
cmd: ["go", "install", "golang.org/x/tools/gopls@latest"],
env: { ...process.env, GOBIN: Global.Path.bin },
stdout: "pipe",
stderr: "pipe",
stdin: "pipe",
})
const exit = await proc.exited
if (exit !== 0) {
log.error("Failed to install gopls")
return
}
bin = path.join(Global.Path.bin, "gopls" + (process.platform === "win32" ? ".exe" : ""))
log.info(`installed gopls`, {
bin,
})
}
return {
process: spawn(bin!, {
cwd: root,
}),
}
},
}
export const RubyLsp: Info = {
id: "ruby-lsp",
root: NearestRoot(["Gemfile"]),
extensions: [".rb", ".rake", ".gemspec", ".ru"],
async spawn(_, root) {
let bin = Bun.which("ruby-lsp", {
PATH: process.env["PATH"] + ":" + Global.Path.bin,
})
if (!bin) {
const ruby = Bun.which("ruby")
const gem = Bun.which("gem")
if (!ruby || !gem) {
log.info("Ruby not found, please install Ruby first")
return
}
log.info("installing ruby-lsp")
const proc = Bun.spawn({
cmd: ["gem", "install", "ruby-lsp", "--bindir", Global.Path.bin],
stdout: "pipe",
stderr: "pipe",
stdin: "pipe",
})
const exit = await proc.exited
if (exit !== 0) {
log.error("Failed to install ruby-lsp")
return
}
bin = path.join(Global.Path.bin, "ruby-lsp" + (process.platform === "win32" ? ".exe" : ""))
log.info(`installed ruby-lsp`, {
bin,
})
}
return {
process: spawn(bin!, ["--stdio"], {
cwd: root,
}),
}
},
}
export const Pyright: Info = {
id: "pyright",
extensions: [".py", ".pyi"],
root: NearestRoot(["pyproject.toml", "setup.py", "setup.cfg", "requirements.txt", "Pipfile", "pyrightconfig.json"]),
async spawn(_, root) {
const proc = spawn(BunProc.which(), ["x", "pyright-langserver", "--stdio"], {
cwd: root,
env: {
...process.env,
BUN_BE_BUN: "1",
},
})
return {
process: proc,
}
},
}
export const ElixirLS: Info = {
id: "elixir-ls",
extensions: [".ex", ".exs"],
root: NearestRoot(["mix.exs", "mix.lock"]),
async spawn(_, root) {
let binary = Bun.which("elixir-ls")
if (!binary) {
const elixirLsPath = path.join(Global.Path.bin, "elixir-ls")
binary = path.join(
Global.Path.bin,
"elixir-ls-master",
"release",
process.platform === "win32" ? "language_server.bar" : "language_server.sh",
)
if (!(await Bun.file(binary).exists())) {
const elixir = Bun.which("elixir")
if (!elixir) {
log.error("elixir is required to run elixir-ls")
return
}
log.info("downloading elixir-ls from GitHub releases")
const response = await fetch("https://github.com/elixir-lsp/elixir-ls/archive/refs/heads/master.zip")
if (!response.ok) return
const zipPath = path.join(Global.Path.bin, "elixir-ls.zip")
await Bun.file(zipPath).write(response)
await $`unzip -o -q ${zipPath}`.cwd(Global.Path.bin).nothrow()
await fs.rm(zipPath, {
force: true,
recursive: true,
})
await $`mix deps.get && mix compile && mix elixir_ls.release2 -o release`
.quiet()
.cwd(path.join(Global.Path.bin, "elixir-ls-master"))
.env({ MIX_ENV: "prod", ...process.env })
log.info(`installed elixir-ls`, {
path: elixirLsPath,
})
}
}
return {
process: spawn(binary, {
cwd: root,
}),
}
},
}
export const Zls: Info = {
id: "zls",
extensions: [".zig", ".zon"],
root: NearestRoot(["build.zig"]),
async spawn(_, root) {
let bin = Bun.which("zls", {
PATH: process.env["PATH"] + ":" + Global.Path.bin,
})
if (!bin) {
const zig = Bun.which("zig")
if (!zig) {
log.error("Zig is required to use zls. Please install Zig first.")
return
}
log.info("downloading zls from GitHub releases")
const releaseResponse = await fetch("https://api.github.com/repos/zigtools/zls/releases/latest")
if (!releaseResponse.ok) {
log.error("Failed to fetch zls release info")
return
}
const release = await releaseResponse.json()
const platform = process.platform
const arch = process.arch
let assetName = ""
let zlsArch: string = arch
if (arch === "arm64") zlsArch = "aarch64"
else if (arch === "x64") zlsArch = "x86_64"
else if (arch === "ia32") zlsArch = "x86"
let zlsPlatform: string = platform
if (platform === "darwin") zlsPlatform = "macos"
else if (platform === "win32") zlsPlatform = "windows"
const ext = platform === "win32" ? "zip" : "tar.xz"
assetName = `zls-${zlsArch}-${zlsPlatform}.${ext}`
const supportedCombos = [
"zls-x86_64-linux.tar.xz",
"zls-x86_64-macos.tar.xz",
"zls-x86_64-windows.zip",
"zls-aarch64-linux.tar.xz",
"zls-aarch64-macos.tar.xz",
"zls-aarch64-windows.zip",
"zls-x86-linux.tar.xz",
"zls-x86-windows.zip",
]
if (!supportedCombos.includes(assetName)) {
log.error(`Platform ${platform} and architecture ${arch} is not supported by zls`)
return
}
const asset = release.assets.find((a: any) => a.name === assetName)
if (!asset) {
log.error(`Could not find asset ${assetName} in latest zls release`)
return
}
const downloadUrl = asset.browser_download_url
const downloadResponse = await fetch(downloadUrl)
if (!downloadResponse.ok) {
log.error("Failed to download zls")
return
}
const tempPath = path.join(Global.Path.bin, assetName)
await Bun.file(tempPath).write(downloadResponse)
if (ext === "zip") {
await $`unzip -o -q ${tempPath}`.cwd(Global.Path.bin).nothrow()
} else {
await $`tar -xf ${tempPath}`.cwd(Global.Path.bin).nothrow()
}
await fs.rm(tempPath, { force: true })
bin = path.join(Global.Path.bin, "zls" + (platform === "win32" ? ".exe" : ""))
if (!(await Bun.file(bin).exists())) {
log.error("Failed to extract zls binary")
return
}
if (platform !== "win32") {
await $`chmod +x ${bin}`.nothrow()
}
log.info(`installed zls`, { bin })
}
return {
process: spawn(bin, {
cwd: root,
}),
}
},
}
export const CSharp: Info = {
id: "csharp",
root: NearestRoot([".sln", ".csproj", "global.json"]),
extensions: [".cs"],
async spawn(_, root) {
let bin = Bun.which("csharp-ls", {
PATH: process.env["PATH"] + ":" + Global.Path.bin,
})
if (!bin) {
if (!Bun.which("dotnet")) {
log.error(".NET SDK is required to install csharp-ls")
return
}
log.info("installing csharp-ls via dotnet tool")
const proc = Bun.spawn({
cmd: ["dotnet", "tool", "install", "csharp-ls", "--tool-path", Global.Path.bin],
stdout: "pipe",
stderr: "pipe",
stdin: "pipe",
})
const exit = await proc.exited
if (exit !== 0) {
log.error("Failed to install csharp-ls")
return
}
bin = path.join(Global.Path.bin, "csharp-ls" + (process.platform === "win32" ? ".exe" : ""))
log.info(`installed csharp-ls`, { bin })
}
return {
process: spawn(bin, {
cwd: root,
}),
}
},
}
}