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Allow waiting for language to be loaded in LanguageRegistry APIs

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This commit is contained in:
Antonio Scandurra 2023-03-10 12:17:47 +01:00
parent 221bb54e48
commit 7a600e7a65
7 changed files with 201 additions and 126 deletions
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51
crates/language/src/language.rs
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@ -13,8 +13,9 @@ use async_trait::async_trait;
use client::http::HttpClient;
use collections::HashMap;
use futures::{
channel::oneshot,
future::{BoxFuture, Shared},
FutureExt, TryFutureExt,
FutureExt, TryFutureExt as _,
};
use gpui::{executor::Background, MutableAppContext, Task};
use highlight_map::HighlightMap;
@ -43,7 +44,7 @@ use syntax_map::SyntaxSnapshot;
use theme::{SyntaxTheme, Theme};
use tree_sitter::{self, Query};
use unicase::UniCase;
use util::ResultExt;
use util::{ResultExt, TryFutureExt as _, UnwrapFuture};
#[cfg(any(test, feature = "test-support"))]
use futures::channel::mpsc;
@ -484,7 +485,7 @@ impl LanguageRegistry {
let (lsp_binary_statuses_tx, lsp_binary_statuses_rx) = async_broadcast::broadcast(16);
Self {
language_server_download_dir: None,
languages: Default::default(),
languages: RwLock::new(vec![PLAIN_TEXT.clone()]),
available_languages: Default::default(),
lsp_binary_statuses_tx,
lsp_binary_statuses_rx,
@ -568,12 +569,18 @@ impl LanguageRegistry {
self.language_server_download_dir = Some(path.into());
}
pub fn language_for_name(self: &Arc<Self>, name: &str) -> Option<Arc<Language>> {
pub fn language_for_name(
self: &Arc<Self>,
name: &str,
) -> UnwrapFuture<oneshot::Receiver<Result<Arc<Language>>>> {
let name = UniCase::new(name);
self.get_or_load_language(|config| UniCase::new(config.name.as_ref()) == name)
}
pub fn language_for_name_or_extension(self: &Arc<Self>, string: &str) -> Option<Arc<Language>> {
pub fn language_for_name_or_extension(
self: &Arc<Self>,
string: &str,
) -> UnwrapFuture<oneshot::Receiver<Result<Arc<Language>>>> {
let string = UniCase::new(string);
self.get_or_load_language(|config| {
UniCase::new(config.name.as_ref()) == string
@ -584,7 +591,10 @@ impl LanguageRegistry {
})
}
pub fn language_for_path(self: &Arc<Self>, path: impl AsRef<Path>) -> Option<Arc<Language>> {
pub fn language_for_path(
self: &Arc<Self>,
path: impl AsRef<Path>,
) -> UnwrapFuture<oneshot::Receiver<Result<Arc<Language>>>> {
let path = path.as_ref();
let filename = path.file_name().and_then(|name| name.to_str());
let extension = path.extension().and_then(|name| name.to_str());
@ -600,17 +610,17 @@ impl LanguageRegistry {
fn get_or_load_language(
self: &Arc<Self>,
callback: impl Fn(&LanguageConfig) -> bool,
) -> Option<Arc<Language>> {
) -> UnwrapFuture<oneshot::Receiver<Result<Arc<Language>>>> {
let (tx, rx) = oneshot::channel();
if let Some(language) = self
.languages
.read()
.iter()
.find(|language| callback(&language.config))
{
return Some(language.clone());
}
if let Some(executor) = self.executor.clone() {
let _ = tx.send(Ok(language.clone()));
} else if let Some(executor) = self.executor.clone() {
let mut available_languages = self.available_languages.write();
if let Some(ix) = available_languages.iter().position(|l| callback(&l.config)) {
@ -625,18 +635,29 @@ impl LanguageRegistry {
.with_lsp_adapter(language.lsp_adapter)
.await;
match language.with_queries(queries) {
Ok(language) => this.add(Arc::new(language)),
Ok(language) => {
let language = Arc::new(language);
this.add(language.clone());
let _ = tx.send(Ok(language));
}
Err(err) => {
log::error!("failed to load language {}: {}", name, err);
return;
let _ = tx.send(Err(anyhow!(
"failed to load language {}: {}",
name,
err
)));
}
};
})
.detach();
} else {
let _ = tx.send(Err(anyhow!("language not found")));
}
} else {
let _ = tx.send(Err(anyhow!("executor does not exist")));
}
None
rx.unwrap()
}
pub fn to_vec(&self) -> Vec<Arc<Language>> {