227 lines
8.9 KiB
Rust
227 lines
8.9 KiB
Rust
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//! Static language server definitions and core types.
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//!
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//! Defines the set of supported LSP servers, their install tiers, and the
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//! result/enum types used across the provisioner.
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/// Optional progress callback type (non-owning, caller ensures liveness
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/// for the duration of the provisioning call).
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/// Intended to be hooked up to a UI toast / status-bar mechanism.
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pub type ProgressFn<'a> = Option<&'a dyn Fn(&str)>;
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/// Result of attempting to make a single language server available.
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///
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/// The caller should switch on this variant: `AlreadyAvailable` and
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/// Installed both mean the binary can be launched; Failed means we
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/// gave up and the user needs to install manually (see `manual_instructions`).
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#[derive(Debug, Clone)]
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pub enum ProvisionResult {
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/// Binary was already on PATH — no install was needed.
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AlreadyAvailable {
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server_name: String,
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language: String,
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binary_path: String,
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},
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/// Provisioner successfully installed the binary during this run.
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Installed {
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server_name: String,
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language: String,
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binary_path: String,
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},
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/// Every install tier failed. Tells the user how to install by hand.
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Failed {
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language: String,
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server_name: String,
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reason: String,
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},
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}
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/// Sentinel command names used by `provision_single` to detect "download"
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/// tiers (which are dispatched to `download_*` helpers rather than
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/// `run_command`). Kept as constants so `supported_servers` stays readable.
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pub(super) const DOWNLOAD_RUST_BIN: &str = "__download_rust_analyzer__";
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pub(super) const DOWNLOAD_JDTLS: &str = "__download_jdtls__";
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/// Static description of a single language server: how to detect it,
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/// what file extensions it handles, and how to install it.
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#[derive(Debug, Clone)]
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pub struct LanguageServerDef {
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/// Human-readable server name (e.g. "rust-analyzer").
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pub name: String,
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/// LSP language identifier (e.g. "rust").
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pub language: String,
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/// File extensions this server handles (with leading dot).
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pub extensions: Vec<String>,
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/// Candidate binary names — the provisioner accepts whichever appears on PATH.
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pub binary_names: Vec<String>,
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/// Install strategies, tried in order until one succeeds.
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pub install_tiers: Vec<InstallTier>,
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}
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/// A single install attempt: a command (plus args) gated by a prerequisite.
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///
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/// `requires` lists binaries that must already be on PATH for this tier
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/// to be considered. If any required binary is missing, the tier is
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/// skipped (not attempted) so we don't produce misleading failures
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/// like "rustup: command not found" when the real fix was to install
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/// rustup first.
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#[derive(Debug, Clone)]
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pub struct InstallTier {
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/// Short human-readable label, e.g. "rustup component".
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pub label: String,
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/// Binaries that must be available before this tier is attempted.
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pub requires: Vec<String>,
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/// Command to run.
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pub command: String,
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/// Arguments to pass to the command.
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pub args: Vec<String>,
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}
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/// Return the static set of supported language servers.
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///
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/// The order is significant: it determines provisioning order and
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/// the order results appear in `provision_all_with_progress()`. Tier 1 paths are
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/// the canonical/idiomatic install for each ecosystem; later tiers
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/// are fallbacks for hosts that lack the primary tooling.
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///
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/// Why hard-coded rather than loaded from settings: the set is small,
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/// changes rarely, and bundling it lets the provisioner run before any
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/// user config has been read (e.g. on first launch).
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pub fn supported_servers() -> Vec<LanguageServerDef> {
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vec![
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LanguageServerDef {
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name: "rust-analyzer".to_string(),
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language: "rust".to_string(),
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extensions: vec![".rs".to_string()],
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binary_names: vec!["rust-analyzer".to_string()],
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install_tiers: vec![
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InstallTier {
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label: "rustup component".to_string(),
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requires: vec!["rustup".to_string()],
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command: "rustup".to_string(),
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args: vec![
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"component".to_string(),
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"add".to_string(),
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"rust-analyzer".to_string(),
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],
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},
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InstallTier {
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label: "pacman".to_string(),
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requires: vec!["pacman".to_string()],
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command: "pacman".to_string(),
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args: vec![
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"-S".to_string(),
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"--noconfirm".to_string(),
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"--needed".to_string(),
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"rust-analyzer".to_string(),
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],
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},
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InstallTier {
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label: "brew".to_string(),
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requires: vec!["brew".to_string()],
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command: "brew".to_string(),
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args: vec!["install".to_string(), "rust-analyzer".to_string()],
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},
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InstallTier {
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label: "cargo install".to_string(),
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requires: vec!["cargo".to_string()],
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command: "cargo".to_string(),
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args: vec![
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"install".to_string(),
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"--locked".to_string(),
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"rust-analyzer".to_string(),
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],
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},
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InstallTier {
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label: "download prebuilt".to_string(),
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requires: vec!["curl".to_string(), "tar".to_string()],
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command: DOWNLOAD_RUST_BIN.to_string(),
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args: vec![],
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},
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],
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},
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LanguageServerDef {
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name: "typescript-language-server".to_string(),
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language: "typescript".to_string(),
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extensions: vec![
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".ts".to_string(),
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".tsx".to_string(),
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".js".to_string(),
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".jsx".to_string(),
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],
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binary_names: vec!["typescript-language-server".to_string()],
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install_tiers: vec![InstallTier {
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label: "npm global".to_string(),
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requires: vec!["npm".to_string()],
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command: "npm".to_string(),
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args: vec![
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"install".to_string(),
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"-g".to_string(),
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"typescript".to_string(),
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"typescript-language-server".to_string(),
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],
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}],
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},
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LanguageServerDef {
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name: "gopls".to_string(),
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language: "go".to_string(),
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extensions: vec![".go".to_string()],
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binary_names: vec!["gopls".to_string()],
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install_tiers: vec![InstallTier {
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label: "go install".to_string(),
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requires: vec!["go".to_string()],
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command: "go".to_string(),
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args: vec![
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"install".to_string(),
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"golang.org/x/tools/gopls@latest".to_string(),
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],
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}],
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},
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LanguageServerDef {
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name: "jdtls".to_string(),
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language: "java".to_string(),
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extensions: vec![".java".to_string()],
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binary_names: vec![
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"jdtls".to_string(),
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"eclipse-jdt-ls".to_string(),
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"jdtls-launcher".to_string(),
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],
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install_tiers: vec![
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InstallTier {
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label: "pacman".to_string(),
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requires: vec!["java".to_string(), "pacman".to_string()],
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command: "pacman".to_string(),
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args: vec![
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"-S".to_string(),
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"--noconfirm".to_string(),
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"--needed".to_string(),
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"eclipse-jdt-ls".to_string(),
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],
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},
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InstallTier {
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label: "apt".to_string(),
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requires: vec!["java".to_string(), "apt".to_string()],
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command: "sudo".to_string(),
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args: vec![
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"apt".to_string(),
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"install".to_string(),
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"-y".to_string(),
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"eclipse-jdt-ls".to_string(),
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],
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},
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InstallTier {
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label: "brew".to_string(),
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requires: vec!["java".to_string(), "brew".to_string()],
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command: "brew".to_string(),
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args: vec!["install".to_string(), "jdtls".to_string()],
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},
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InstallTier {
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label: "download from eclipse".to_string(),
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requires: vec!["java".to_string(), "curl".to_string(), "tar".to_string()],
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command: DOWNLOAD_JDTLS.to_string(),
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args: vec![],
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},
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],
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},
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]
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}
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