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language_registry.rs
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language_registry.rs
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use crate::{
language_settings::{
all_language_settings, AllLanguageSettingsContent, LanguageSettingsContent,
},
task_context::ContextProvider,
CachedLspAdapter, File, Language, LanguageConfig, LanguageId, LanguageMatcher,
LanguageServerName, LspAdapter, LspAdapterDelegate, PARSER, PLAIN_TEXT,
};
use anyhow::{anyhow, Context as _, Result};
use collections::{hash_map, HashMap};
use futures::TryFutureExt;
use futures::{
channel::{mpsc, oneshot},
future::Shared,
Future, FutureExt as _,
};
use gpui::{AppContext, BackgroundExecutor, Task};
use lsp::LanguageServerId;
use parking_lot::{Mutex, RwLock};
use postage::watch;
use std::{
borrow::Cow,
ffi::OsStr,
ops::Not,
path::{Path, PathBuf},
sync::Arc,
};
use sum_tree::Bias;
use text::{Point, Rope};
use theme::Theme;
use unicase::UniCase;
use util::{maybe, paths::PathExt, post_inc, ResultExt};
pub struct LanguageRegistry {
state: RwLock<LanguageRegistryState>,
language_server_download_dir: Option<Arc<Path>>,
login_shell_env_loaded: Shared<Task<()>>,
executor: BackgroundExecutor,
lsp_binary_status_tx: LspBinaryStatusSender,
}
struct LanguageRegistryState {
next_language_server_id: usize,
languages: Vec<Arc<Language>>,
language_settings: AllLanguageSettingsContent,
available_languages: Vec<AvailableLanguage>,
grammars: HashMap<Arc<str>, AvailableGrammar>,
lsp_adapters: HashMap<Arc<str>, Vec<Arc<CachedLspAdapter>>>,
available_lsp_adapters:
HashMap<LanguageServerName, Arc<dyn Fn() -> Arc<CachedLspAdapter> + 'static + Send + Sync>>,
loading_languages: HashMap<LanguageId, Vec<oneshot::Sender<Result<Arc<Language>>>>>,
subscription: (watch::Sender<()>, watch::Receiver<()>),
theme: Option<Arc<Theme>>,
version: usize,
reload_count: usize,
#[cfg(any(test, feature = "test-support"))]
fake_server_txs:
HashMap<Arc<str>, Vec<futures::channel::mpsc::UnboundedSender<lsp::FakeLanguageServer>>>,
}
#[derive(Clone, Debug, PartialEq, Eq)]
pub enum LanguageServerBinaryStatus {
None,
CheckingForUpdate,
Downloading,
Failed { error: String },
}
pub struct PendingLanguageServer {
pub server_id: LanguageServerId,
pub task: Task<Result<(lsp::LanguageServer, Option<serde_json::Value>)>>,
pub container_dir: Option<Arc<Path>>,
}
#[derive(Clone)]
struct AvailableLanguage {
id: LanguageId,
name: Arc<str>,
grammar: Option<Arc<str>>,
matcher: LanguageMatcher,
load: Arc<
dyn Fn() -> Result<(
LanguageConfig,
LanguageQueries,
Option<Arc<dyn ContextProvider>>,
)>
+ 'static
+ Send
+ Sync,
>,
loaded: bool,
}
enum AvailableGrammar {
Native(tree_sitter::Language),
Loaded(#[allow(unused)] PathBuf, tree_sitter::Language),
Loading(
#[allow(unused)] PathBuf,
Vec<oneshot::Sender<Result<tree_sitter::Language, Arc<anyhow::Error>>>>,
),
Unloaded(PathBuf),
LoadFailed(Arc<anyhow::Error>),
}
#[derive(Debug)]
pub struct LanguageNotFound;
impl std::fmt::Display for LanguageNotFound {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "language not found")
}
}
pub const QUERY_FILENAME_PREFIXES: &[(
&str,
fn(&mut LanguageQueries) -> &mut Option<Cow<'static, str>>,
)] = &[
("highlights", |q| &mut q.highlights),
("brackets", |q| &mut q.brackets),
("outline", |q| &mut q.outline),
("indents", |q| &mut q.indents),
("embedding", |q| &mut q.embedding),
("injections", |q| &mut q.injections),
("overrides", |q| &mut q.overrides),
("redactions", |q| &mut q.redactions),
];
/// Tree-sitter language queries for a given language.
#[derive(Debug, Default)]
pub struct LanguageQueries {
pub highlights: Option<Cow<'static, str>>,
pub brackets: Option<Cow<'static, str>>,
pub indents: Option<Cow<'static, str>>,
pub outline: Option<Cow<'static, str>>,
pub embedding: Option<Cow<'static, str>>,
pub injections: Option<Cow<'static, str>>,
pub overrides: Option<Cow<'static, str>>,
pub redactions: Option<Cow<'static, str>>,
}
#[derive(Clone, Default)]
struct LspBinaryStatusSender {
txs: Arc<Mutex<Vec<mpsc::UnboundedSender<(LanguageServerName, LanguageServerBinaryStatus)>>>>,
}
impl LanguageRegistry {
pub fn new(login_shell_env_loaded: Task<()>, executor: BackgroundExecutor) -> Self {
let this = Self {
state: RwLock::new(LanguageRegistryState {
next_language_server_id: 0,
languages: Vec::new(),
available_languages: Vec::new(),
grammars: Default::default(),
language_settings: Default::default(),
loading_languages: Default::default(),
lsp_adapters: Default::default(),
available_lsp_adapters: HashMap::default(),
subscription: watch::channel(),
theme: Default::default(),
version: 0,
reload_count: 0,
#[cfg(any(test, feature = "test-support"))]
fake_server_txs: Default::default(),
}),
language_server_download_dir: None,
login_shell_env_loaded: login_shell_env_loaded.shared(),
lsp_binary_status_tx: Default::default(),
executor,
};
this.add(PLAIN_TEXT.clone());
this
}
#[cfg(any(test, feature = "test-support"))]
pub fn test(executor: BackgroundExecutor) -> Self {
let mut this = Self::new(Task::ready(()), executor);
this.language_server_download_dir = Some(Path::new("/the-download-dir").into());
this
}
/// Clears out all of the loaded languages and reload them from scratch.
pub fn reload(&self) {
self.state.write().reload();
}
/// Removes the specified languages and grammars from the registry.
pub fn remove_languages(
&self,
languages_to_remove: &[Arc<str>],
grammars_to_remove: &[Arc<str>],
) {
self.state
.write()
.remove_languages(languages_to_remove, grammars_to_remove)
}
pub fn remove_lsp_adapter(&self, language_name: &str, name: &LanguageServerName) {
let mut state = self.state.write();
if let Some(adapters) = state.lsp_adapters.get_mut(language_name) {
adapters.retain(|adapter| &adapter.name != name)
}
state.version += 1;
state.reload_count += 1;
*state.subscription.0.borrow_mut() = ();
}
#[cfg(any(feature = "test-support", test))]
pub fn register_test_language(&self, config: LanguageConfig) {
self.register_language(
config.name.clone(),
config.grammar.clone(),
config.matcher.clone(),
move || Ok((config.clone(), Default::default(), None)),
)
}
/// Registers an available language server adapter.
///
/// The language server is registered under the language server name, but
/// not bound to a particular language.
///
/// When a language wants to load this particular language server, it will
/// invoke the `load` function.
pub fn register_available_lsp_adapter(
&self,
name: LanguageServerName,
load: impl Fn() -> Arc<dyn LspAdapter> + 'static + Send + Sync,
) {
self.state.write().available_lsp_adapters.insert(
name,
Arc::new(move || {
let lsp_adapter = load();
CachedLspAdapter::new(lsp_adapter, true)
}),
);
}
/// Loads the language server adapter for the language server with the given name.
pub fn load_available_lsp_adapter(
&self,
name: &LanguageServerName,
) -> Option<Arc<CachedLspAdapter>> {
let state = self.state.read();
let load_lsp_adapter = state.available_lsp_adapters.get(name)?;
Some(load_lsp_adapter())
}
pub fn register_lsp_adapter(&self, language_name: Arc<str>, adapter: Arc<dyn LspAdapter>) {
self.state
.write()
.lsp_adapters
.entry(language_name)
.or_default()
.push(CachedLspAdapter::new(adapter, true));
}
pub fn register_secondary_lsp_adapter(
&self,
language_name: Arc<str>,
adapter: Arc<dyn LspAdapter>,
) {
self.state
.write()
.lsp_adapters
.entry(language_name)
.or_default()
.push(CachedLspAdapter::new(adapter, false));
}
#[cfg(any(feature = "test-support", test))]
pub fn register_fake_lsp_adapter(
&self,
language_name: &str,
adapter: crate::FakeLspAdapter,
) -> futures::channel::mpsc::UnboundedReceiver<lsp::FakeLanguageServer> {
self.register_specific_fake_lsp_adapter(language_name, true, adapter)
}
#[cfg(any(feature = "test-support", test))]
pub fn register_specific_fake_lsp_adapter(
&self,
language_name: &str,
primary: bool,
adapter: crate::FakeLspAdapter,
) -> futures::channel::mpsc::UnboundedReceiver<lsp::FakeLanguageServer> {
self.state
.write()
.lsp_adapters
.entry(language_name.into())
.or_default()
.push(CachedLspAdapter::new(Arc::new(adapter), primary));
self.fake_language_servers(language_name)
}
#[cfg(any(feature = "test-support", test))]
pub fn fake_language_servers(
&self,
language_name: &str,
) -> futures::channel::mpsc::UnboundedReceiver<lsp::FakeLanguageServer> {
let (servers_tx, servers_rx) = futures::channel::mpsc::unbounded();
self.state
.write()
.fake_server_txs
.entry(language_name.into())
.or_default()
.push(servers_tx);
servers_rx
}
/// Adds a language to the registry, which can be loaded if needed.
pub fn register_language(
&self,
name: Arc<str>,
grammar_name: Option<Arc<str>>,
matcher: LanguageMatcher,
load: impl Fn() -> Result<(
LanguageConfig,
LanguageQueries,
Option<Arc<dyn ContextProvider>>,
)>
+ 'static
+ Send
+ Sync,
) {
let load = Arc::new(load);
let state = &mut *self.state.write();
for existing_language in &mut state.available_languages {
if existing_language.name == name {
existing_language.grammar = grammar_name;
existing_language.matcher = matcher;
existing_language.load = load;
return;
}
}
state.available_languages.push(AvailableLanguage {
id: LanguageId::new(),
name,
grammar: grammar_name,
matcher,
load,
loaded: false,
});
state.version += 1;
state.reload_count += 1;
*state.subscription.0.borrow_mut() = ();
}
/// Adds grammars to the registry. Language configurations reference a grammar by name. The
/// grammar controls how the source code is parsed.
pub fn register_native_grammars(
&self,
grammars: impl IntoIterator<Item = (impl Into<Arc<str>>, tree_sitter::Language)>,
) {
self.state.write().grammars.extend(
grammars
.into_iter()
.map(|(name, grammar)| (name.into(), AvailableGrammar::Native(grammar))),
);
}
/// Adds paths to WASM grammar files, which can be loaded if needed.
pub fn register_wasm_grammars(
&self,
grammars: impl IntoIterator<Item = (impl Into<Arc<str>>, PathBuf)>,
) {
let mut state = self.state.write();
state.grammars.extend(
grammars
.into_iter()
.map(|(name, path)| (name.into(), AvailableGrammar::Unloaded(path))),
);
state.version += 1;
state.reload_count += 1;
*state.subscription.0.borrow_mut() = ();
}
pub fn language_settings(&self) -> AllLanguageSettingsContent {
self.state.read().language_settings.clone()
}
pub fn language_names(&self) -> Vec<String> {
let state = self.state.read();
let mut result = state
.available_languages
.iter()
.filter_map(|l| l.loaded.not().then_some(l.name.to_string()))
.chain(state.languages.iter().map(|l| l.config.name.to_string()))
.collect::<Vec<_>>();
result.sort_unstable_by_key(|language_name| language_name.to_lowercase());
result
}
pub fn grammar_names(&self) -> Vec<Arc<str>> {
let state = self.state.read();
let mut result = state.grammars.keys().cloned().collect::<Vec<_>>();
result.sort_unstable_by_key(|grammar_name| grammar_name.to_lowercase());
result
}
/// Add a pre-loaded language to the registry.
pub fn add(&self, language: Arc<Language>) {
let mut state = self.state.write();
state.available_languages.push(AvailableLanguage {
id: language.id,
name: language.name(),
grammar: language.config.grammar.clone(),
matcher: language.config.matcher.clone(),
load: Arc::new(|| Err(anyhow!("already loaded"))),
loaded: true,
});
state.add(language);
}
pub fn subscribe(&self) -> watch::Receiver<()> {
self.state.read().subscription.1.clone()
}
/// Returns the number of times that the registry has been changed,
/// by adding languages or reloading.
pub fn version(&self) -> usize {
self.state.read().version
}
/// Returns the number of times that the registry has been reloaded.
pub fn reload_count(&self) -> usize {
self.state.read().reload_count
}
pub fn set_theme(&self, theme: Arc<Theme>) {
let mut state = self.state.write();
state.theme = Some(theme.clone());
for language in &state.languages {
language.set_theme(theme.syntax());
}
}
pub fn set_language_server_download_dir(&mut self, path: impl Into<Arc<Path>>) {
self.language_server_download_dir = Some(path.into());
}
pub fn language_for_name(
self: &Arc<Self>,
name: &str,
) -> impl Future<Output = Result<Arc<Language>>> {
let name = UniCase::new(name);
let rx = self.get_or_load_language(|language_name, _| {
if UniCase::new(language_name) == name {
1
} else {
0
}
});
async move { rx.await? }
}
pub fn language_for_name_or_extension(
self: &Arc<Self>,
string: &str,
) -> impl Future<Output = Result<Arc<Language>>> {
let string = UniCase::new(string);
let rx = self.get_or_load_language(|name, config| {
if UniCase::new(name) == string
|| config
.path_suffixes
.iter()
.any(|suffix| UniCase::new(suffix) == string)
{
1
} else {
0
}
});
async move { rx.await? }
}
pub fn language_for_file(
self: &Arc<Self>,
file: &Arc<dyn File>,
content: Option<&Rope>,
cx: &AppContext,
) -> impl Future<Output = Result<Arc<Language>>> {
let user_file_types = all_language_settings(Some(file), cx);
self.language_for_file_internal(
&file.full_path(cx),
content,
Some(&user_file_types.file_types),
)
}
pub fn language_for_file_path<'a>(
self: &Arc<Self>,
path: &'a Path,
) -> impl Future<Output = Result<Arc<Language>>> + 'a {
self.language_for_file_internal(path, None, None)
.map_err(|error| error.context(format!("language for file path {}", path.display())))
}
fn language_for_file_internal(
self: &Arc<Self>,
path: &Path,
content: Option<&Rope>,
user_file_types: Option<&HashMap<Arc<str>, Vec<String>>>,
) -> impl Future<Output = Result<Arc<Language>>> {
let filename = path.file_name().and_then(|name| name.to_str());
let extension = path.extension_or_hidden_file_name();
let path_suffixes = [extension, filename];
let empty = Vec::new();
let rx = self.get_or_load_language(move |language_name, config| {
let path_matches_default_suffix = config
.path_suffixes
.iter()
.any(|suffix| path_suffixes.contains(&Some(suffix.as_str())));
let path_matches_custom_suffix = user_file_types
.and_then(|types| types.get(language_name))
.unwrap_or(&empty)
.iter()
.any(|suffix| path_suffixes.contains(&Some(suffix.as_str())));
let content_matches = content.zip(config.first_line_pattern.as_ref()).map_or(
false,
|(content, pattern)| {
let end = content.clip_point(Point::new(0, 256), Bias::Left);
let end = content.point_to_offset(end);
let text = content.chunks_in_range(0..end).collect::<String>();
pattern.is_match(&text)
},
);
if path_matches_custom_suffix {
2
} else if path_matches_default_suffix || content_matches {
1
} else {
0
}
});
async move { rx.await? }
}
fn get_or_load_language(
self: &Arc<Self>,
callback: impl Fn(&str, &LanguageMatcher) -> usize,
) -> oneshot::Receiver<Result<Arc<Language>>> {
let (tx, rx) = oneshot::channel();
let mut state = self.state.write();
let Some((language, _)) = state
.available_languages
.iter()
.filter_map(|language| {
let score = callback(&language.name, &language.matcher);
if score > 0 {
Some((language.clone(), score))
} else {
None
}
})
.max_by_key(|e| e.1)
.clone()
else {
let _ = tx.send(Err(anyhow!(LanguageNotFound)));
return rx;
};
// If the language is already loaded, resolve with it immediately.
for loaded_language in state.languages.iter() {
if loaded_language.id == language.id {
let _ = tx.send(Ok(loaded_language.clone()));
return rx;
}
}
match state.loading_languages.entry(language.id) {
// If the language is already being loaded, then add this
// channel to a list that will be sent to when the load completes.
hash_map::Entry::Occupied(mut entry) => entry.get_mut().push(tx),
// Otherwise, start loading the language.
hash_map::Entry::Vacant(entry) => {
let this = self.clone();
self.executor
.spawn(async move {
let id = language.id;
let name = language.name.clone();
let language = async {
let (config, queries, provider) = (language.load)()?;
if let Some(grammar) = config.grammar.clone() {
let grammar = Some(this.get_or_load_grammar(grammar).await?);
Language::new_with_id(id, config, grammar)
.with_context_provider(provider)
.with_queries(queries)
} else {
Ok(Language::new_with_id(id, config, None)
.with_context_provider(provider))
}
}
.await;
match language {
Ok(language) => {
let language = Arc::new(language);
let mut state = this.state.write();
state.add(language.clone());
state.mark_language_loaded(id);
if let Some(mut txs) = state.loading_languages.remove(&id) {
for tx in txs.drain(..) {
let _ = tx.send(Ok(language.clone()));
}
}
}
Err(e) => {
log::error!("failed to load language {name}:\n{:?}", e);
let mut state = this.state.write();
state.mark_language_loaded(id);
if let Some(mut txs) = state.loading_languages.remove(&id) {
for tx in txs.drain(..) {
let _ = tx.send(Err(anyhow!(
"failed to load language {}: {}",
name,
e
)));
}
}
}
};
})
.detach();
entry.insert(vec![tx]);
}
}
rx
}
fn get_or_load_grammar(
self: &Arc<Self>,
name: Arc<str>,
) -> impl Future<Output = Result<tree_sitter::Language>> {
let (tx, rx) = oneshot::channel();
let mut state = self.state.write();
if let Some(grammar) = state.grammars.get_mut(name.as_ref()) {
match grammar {
AvailableGrammar::LoadFailed(error) => {
tx.send(Err(error.clone())).ok();
}
AvailableGrammar::Native(grammar) | AvailableGrammar::Loaded(_, grammar) => {
tx.send(Ok(grammar.clone())).ok();
}
AvailableGrammar::Loading(_, txs) => {
txs.push(tx);
}
AvailableGrammar::Unloaded(wasm_path) => {
let this = self.clone();
let wasm_path = wasm_path.clone();
*grammar = AvailableGrammar::Loading(wasm_path.clone(), vec![tx]);
self.executor
.spawn(async move {
let grammar_result = maybe!({
let wasm_bytes = std::fs::read(&wasm_path)?;
let grammar_name = wasm_path
.file_stem()
.and_then(OsStr::to_str)
.ok_or_else(|| anyhow!("invalid grammar filename"))?;
anyhow::Ok(PARSER.with(|parser| {
let mut parser = parser.borrow_mut();
let mut store = parser.take_wasm_store().unwrap();
let grammar = store.load_language(&grammar_name, &wasm_bytes);
parser.set_wasm_store(store).unwrap();
grammar
})?)
})
.map_err(Arc::new);
let value = match &grammar_result {
Ok(grammar) => AvailableGrammar::Loaded(wasm_path, grammar.clone()),
Err(error) => AvailableGrammar::LoadFailed(error.clone()),
};
let old_value = this.state.write().grammars.insert(name, value);
if let Some(AvailableGrammar::Loading(_, txs)) = old_value {
for tx in txs {
tx.send(grammar_result.clone()).ok();
}
}
})
.detach();
}
}
} else {
tx.send(Err(Arc::new(anyhow!("no such grammar {}", name))))
.ok();
}
async move { rx.await?.map_err(|e| anyhow!(e)) }
}
pub fn to_vec(&self) -> Vec<Arc<Language>> {
self.state.read().languages.iter().cloned().collect()
}
pub fn lsp_adapters(&self, language: &Arc<Language>) -> Vec<Arc<CachedLspAdapter>> {
self.state
.read()
.lsp_adapters
.get(&language.config.name)
.cloned()
.unwrap_or_default()
}
pub fn all_prettier_plugins(&self) -> Vec<Arc<str>> {
let state = self.state.read();
state
.languages
.iter()
.flat_map(|language| language.config.prettier_plugins.iter().cloned())
.collect()
}
pub fn update_lsp_status(
&self,
server_name: LanguageServerName,
status: LanguageServerBinaryStatus,
) {
self.lsp_binary_status_tx.send(server_name, status);
}
pub fn create_pending_language_server(
self: &Arc<Self>,
stderr_capture: Arc<Mutex<Option<String>>>,
language: Arc<Language>,
adapter: Arc<CachedLspAdapter>,
root_path: Arc<Path>,
delegate: Arc<dyn LspAdapterDelegate>,
cx: &mut AppContext,
) -> Option<PendingLanguageServer> {
let server_id = self.state.write().next_language_server_id();
log::info!(
"starting language server {:?}, path: {root_path:?}, id: {server_id}",
adapter.name.0
);
let download_dir = self
.language_server_download_dir
.clone()
.ok_or_else(|| anyhow!("language server download directory has not been assigned before starting server"))
.log_err()?;
let language = language.clone();
let container_dir: Arc<Path> = Arc::from(download_dir.join(adapter.name.0.as_ref()));
let root_path = root_path.clone();
let login_shell_env_loaded = self.login_shell_env_loaded.clone();
let this = Arc::downgrade(self);
let task = cx.spawn({
let container_dir = container_dir.clone();
move |mut cx| async move {
// If we want to install a binary globally, we need to wait for
// the login shell to be set on our process.
login_shell_env_loaded.await;
let binary_result = adapter
.clone()
.get_language_server_command(
language.clone(),
container_dir,
delegate.clone(),
&mut cx,
)
.await;
delegate.update_status(adapter.name.clone(), LanguageServerBinaryStatus::None);
let binary = binary_result?;
let options = adapter
.adapter
.clone()
.initialization_options(&delegate)
.await?;
if let Some(task) = adapter.will_start_server(&delegate, &mut cx) {
task.await?;
}
#[cfg(any(test, feature = "test-support"))]
if true {
let capabilities = adapter
.as_fake()
.map(|fake_adapter| fake_adapter.capabilities.clone())
.unwrap_or_else(|| lsp::ServerCapabilities {
completion_provider: Some(Default::default()),
..Default::default()
});
let (server, mut fake_server) = lsp::FakeLanguageServer::new(
server_id,
binary,
adapter.name.0.to_string(),
capabilities,
cx.clone(),
);
if let Some(fake_adapter) = adapter.as_fake() {
if let Some(initializer) = &fake_adapter.initializer {
initializer(&mut fake_server);
}
}
cx.background_executor()
.spawn(async move {
if fake_server
.try_receive_notification::<lsp::notification::Initialized>()
.await
.is_some()
{
if let Some(this) = this.upgrade() {
if let Some(txs) = this
.state
.write()
.fake_server_txs
.get_mut(language.name().as_ref())
{
for tx in txs {
tx.unbounded_send(fake_server.clone()).ok();
}
}
}
}
})
.detach();
return Ok((server, options));
}
drop(this);
Ok((
lsp::LanguageServer::new(
stderr_capture,
server_id,
binary,
&root_path,
adapter.code_action_kinds(),
cx,
)?,
options,
))
}
});
Some(PendingLanguageServer {
server_id,
task,
container_dir: Some(container_dir),
})
}
pub fn language_server_binary_statuses(
&self,
) -> mpsc::UnboundedReceiver<(LanguageServerName, LanguageServerBinaryStatus)> {
self.lsp_binary_status_tx.subscribe()
}
pub fn delete_server_container(
&self,
adapter: Arc<CachedLspAdapter>,
cx: &mut AppContext,
) -> Task<()> {
log::info!("deleting server container");
let download_dir = self
.language_server_download_dir
.clone()
.expect("language server download directory has not been assigned before deleting server container");
cx.spawn(|_| async move {
let container_dir = download_dir.join(adapter.name.0.as_ref());
smol::fs::remove_dir_all(container_dir)
.await
.context("server container removal")
.log_err();
})
}
pub fn next_language_server_id(&self) -> LanguageServerId {
self.state.write().next_language_server_id()
}
}
impl LanguageRegistryState {
fn next_language_server_id(&mut self) -> LanguageServerId {
LanguageServerId(post_inc(&mut self.next_language_server_id))
}
fn add(&mut self, language: Arc<Language>) {
if let Some(theme) = self.theme.as_ref() {
language.set_theme(theme.syntax());
}
self.language_settings.languages.insert(
language.name(),
LanguageSettingsContent {
tab_size: language.config.tab_size,
hard_tabs: language.config.hard_tabs,
soft_wrap: language.config.soft_wrap,
..Default::default()
}
.clone(),
);
self.languages.push(language);
self.version += 1;
*self.subscription.0.borrow_mut() = ();
}
fn reload(&mut self) {
self.languages.clear();
self.version += 1;
self.reload_count += 1;
for language in &mut self.available_languages {
language.loaded = false;
}
*self.subscription.0.borrow_mut() = ();
}
fn remove_languages(
&mut self,
languages_to_remove: &[Arc<str>],
grammars_to_remove: &[Arc<str>],
) {
if languages_to_remove.is_empty() && grammars_to_remove.is_empty() {
return;
}
self.languages
.retain(|language| !languages_to_remove.contains(&language.name()));
self.available_languages
.retain(|language| !languages_to_remove.contains(&language.name));
self.grammars
.retain(|name, _| !grammars_to_remove.contains(&name));
self.version += 1;
self.reload_count += 1;
*self.subscription.0.borrow_mut() = ();
}
/// Mark the given language as having been loaded, so that the
/// language registry won't try to load it again.
fn mark_language_loaded(&mut self, id: LanguageId) {
for language in &mut self.available_languages {
if language.id == id {
language.loaded = true;
break;
}
}
}
}
impl LspBinaryStatusSender {
fn subscribe(
&self,
) -> mpsc::UnboundedReceiver<(LanguageServerName, LanguageServerBinaryStatus)> {
let (tx, rx) = mpsc::unbounded();
self.txs.lock().push(tx);
rx
}
fn send(&self, name: LanguageServerName, status: LanguageServerBinaryStatus) {
let mut txs = self.txs.lock();
txs.retain(|tx| tx.unbounded_send((name.clone(), status.clone())).is_ok());
}
}