@@ -363,6 +363,7 @@ dependencies = [
"futures-io",
"memchr",
"pin-project-lite 0.2.13",
+ "xz2",
]
[[package]]
@@ -4081,6 +4082,17 @@ dependencies = [
"url",
]
+[[package]]
+name = "lzma-sys"
+version = "0.1.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5fda04ab3764e6cde78b9974eec4f779acaba7c4e84b36eca3cf77c581b85d27"
+dependencies = [
+ "cc",
+ "libc",
+ "pkg-config",
+]
+
[[package]]
name = "mach2"
version = "0.4.1"
@@ -9609,6 +9621,15 @@ version = "0.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ec7a2a501ed189703dba8b08142f057e887dfc4b2cc4db2d343ac6376ba3e0b9"
+[[package]]
+name = "xz2"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "388c44dc09d76f1536602ead6d325eb532f5c122f17782bd57fb47baeeb767e2"
+dependencies = [
+ "lzma-sys",
+]
+
[[package]]
name = "yansi"
version = "0.5.1"
@@ -92,7 +92,7 @@ resolver = "2"
[workspace.dependencies]
anyhow = { version = "1.0.57" }
async-trait = { version = "0.1" }
-async-compression = { version = "0.4", features = ["gzip", "futures-io"] }
+async-compression = { version = "0.4", features = ["gzip", "xz", "futures-io"] }
chrono = { version = "0.4", features = ["serde"] }
ctor = "0.2.6"
derive_more = { version = "0.99.17" }
@@ -202,7 +202,11 @@ pub fn init(
);
}
}
- language("haskell", tree_sitter_haskell::language(), vec![]);
+ language(
+ "haskell",
+ tree_sitter_haskell::language(),
+ vec![Arc::new(haskell::HaskellLspAdapter)],
+ );
language(
"html",
tree_sitter_html::language(),
@@ -1 +1,135 @@
+use std::env::consts::ARCH;
+use std::{any::Any, path::PathBuf};
+use anyhow::{anyhow, Context, Result};
+use async_compression::futures::bufread::XzDecoder;
+use async_tar::Archive;
+use async_trait::async_trait;
+use futures::{io::BufReader, StreamExt};
+use smol::fs;
+
+use language::{LanguageServerName, LspAdapter, LspAdapterDelegate};
+use lsp::LanguageServerBinary;
+use util::async_maybe;
+use util::github::latest_github_release;
+use util::{github::GitHubLspBinaryVersion, ResultExt};
+
+pub struct HaskellLspAdapter;
+
+#[async_trait]
+impl LspAdapter for HaskellLspAdapter {
+ fn name(&self) -> LanguageServerName {
+ LanguageServerName("haskell-language-server".into())
+ }
+
+ fn short_name(&self) -> &'static str {
+ "hls"
+ }
+
+ async fn fetch_latest_server_version(
+ &self,
+ delegate: &dyn LspAdapterDelegate,
+ ) -> Result<Box<dyn 'static + Send + Any>> {
+ // TODO: Release version should be matched against GHC version
+ let release = latest_github_release(
+ "haskell/haskell-language-server",
+ false,
+ delegate.http_client(),
+ )
+ .await?;
+ let asset_name = format!(
+ "haskell-language-server-{}-{}-apple-darwin.tar.xz",
+ release.name, ARCH
+ );
+ let asset = release
+ .assets
+ .iter()
+ .find(|asset| asset.name == asset_name)
+ .ok_or_else(|| anyhow!("no asset found matching {:?}", asset_name))?;
+ let version = GitHubLspBinaryVersion {
+ name: release.name,
+ url: asset.browser_download_url.clone(),
+ };
+ Ok(Box::new(version) as Box<_>)
+ }
+
+ async fn fetch_server_binary(
+ &self,
+ version: Box<dyn 'static + Send + Any>,
+ container_dir: PathBuf,
+ delegate: &dyn LspAdapterDelegate,
+ ) -> Result<LanguageServerBinary> {
+ let version = version.downcast::<GitHubLspBinaryVersion>().unwrap();
+ let destination_path =
+ container_dir.join(format!("haskell-language-server-{}", version.name));
+ if fs::metadata(&destination_path).await.is_err() {
+ let mut response = delegate
+ .http_client()
+ .get(&version.url, Default::default(), true)
+ .await
+ .context("error downloading release")?;
+ let decompressed_bytes = XzDecoder::new(BufReader::new(response.body_mut()));
+ let archive = Archive::new(decompressed_bytes);
+ archive.unpack(&container_dir).await?;
+ }
+ let binary_path = destination_path.join("bin/haskell-language-server-wrapper");
+ fs::set_permissions(
+ &binary_path,
+ <fs::Permissions as fs::unix::PermissionsExt>::from_mode(0o755),
+ )
+ .await?;
+ Ok(LanguageServerBinary {
+ path: binary_path,
+ arguments: vec!["--lsp".into()],
+ })
+ }
+
+ async fn cached_server_binary(
+ &self,
+ container_dir: PathBuf,
+ _: &dyn LspAdapterDelegate,
+ ) -> Option<LanguageServerBinary> {
+ get_cached_server_binary(container_dir).await
+ }
+
+ async fn installation_test_binary(
+ &self,
+ container_dir: PathBuf,
+ ) -> Option<LanguageServerBinary> {
+ get_cached_server_binary(container_dir)
+ .await
+ .map(|mut binary| {
+ binary.arguments = vec!["--help".into()];
+ binary
+ })
+ }
+}
+
+async fn get_cached_server_binary(container_dir: PathBuf) -> Option<LanguageServerBinary> {
+ async_maybe!({
+ let mut last_binary_path = None;
+ let mut entries = fs::read_dir(&container_dir).await?;
+ while let Some(entry) = entries.next().await {
+ let entry = entry?;
+ if entry.file_type().await?.is_file()
+ && entry
+ .file_name()
+ .to_str()
+ .map_or(false, |name| name == "haskell-language-server-wrapper")
+ {
+ last_binary_path = Some(entry.path());
+ }
+ }
+
+ if let Some(path) = last_binary_path {
+ Ok(LanguageServerBinary {
+ path,
+ arguments: Vec::new(),
+ })
+ } else {
+ Err(anyhow!("no cached binary"))
+ }
+ })
+ .await
+ .log_err()
+}