python: Add pylsp as the secondary language server (#20358)

Closes #ISSUE

Release Notes:

- Added python-lsp-server as a secondary built-in language server.
This commit is contained in:
Piotr Osiewicz 2024-11-12 17:23:40 +01:00 committed by GitHub
parent 181c3724aa
commit d1e2c6e657
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GPG key ID: B5690EEEBB952194
2 changed files with 287 additions and 5 deletions

View file

@ -175,9 +175,10 @@ pub fn init(languages: Arc<LanguageRegistry>, node_runtime: NodeRuntime, cx: &mu
language!("markdown-inline");
language!(
"python",
vec![Arc::new(python::PythonLspAdapter::new(
node_runtime.clone(),
))],
vec![
Arc::new(python::PythonLspAdapter::new(node_runtime.clone(),)),
Arc::new(python::PyLspAdapter::new())
],
PythonContextProvider,
Arc::new(PythonToolchainProvider::default()) as Arc<dyn ToolchainLister>
);

View file

@ -1,4 +1,5 @@
use anyhow::Result;
use anyhow::ensure;
use anyhow::{anyhow, Result};
use async_trait::async_trait;
use collections::HashMap;
use gpui::AppContext;
@ -16,7 +17,8 @@ use pet_core::os_environment::Environment;
use pet_core::python_environment::PythonEnvironmentKind;
use pet_core::Configuration;
use project::lsp_store::language_server_settings;
use serde_json::Value;
use serde_json::{json, Value};
use smol::{lock::OnceCell, process::Command};
use std::sync::Mutex;
use std::{
@ -507,6 +509,285 @@ impl<'a> pet_core::os_environment::Environment for EnvironmentApi<'a> {
}
}
pub(crate) struct PyLspAdapter {
python_venv_base: OnceCell<Result<Arc<Path>, String>>,
}
impl PyLspAdapter {
const SERVER_NAME: LanguageServerName = LanguageServerName::new_static("pylsp");
pub(crate) fn new() -> Self {
Self {
python_venv_base: OnceCell::new(),
}
}
async fn ensure_venv(delegate: &dyn LspAdapterDelegate) -> Result<Arc<Path>> {
let python_path = Self::find_base_python(delegate)
.await
.ok_or_else(|| anyhow!("Could not find Python installation for PyLSP"))?;
let work_dir = delegate
.language_server_download_dir(&Self::SERVER_NAME)
.await
.ok_or_else(|| anyhow!("Could not get working directory for PyLSP"))?;
let mut path = PathBuf::from(work_dir.as_ref());
path.push("pylsp-venv");
if !path.exists() {
Command::new(python_path)
.arg("-m")
.arg("venv")
.arg("pylsp-venv")
.current_dir(work_dir)
.spawn()?
.output()
.await?;
}
Ok(path.into())
}
// Find "baseline", user python version from which we'll create our own venv.
async fn find_base_python(delegate: &dyn LspAdapterDelegate) -> Option<PathBuf> {
for path in ["python3", "python"] {
if let Some(path) = delegate.which(path.as_ref()).await {
return Some(path);
}
}
None
}
async fn base_venv(&self, delegate: &dyn LspAdapterDelegate) -> Result<Arc<Path>, String> {
self.python_venv_base
.get_or_init(move || async move {
Self::ensure_venv(delegate)
.await
.map_err(|e| format!("{e}"))
})
.await
.clone()
}
}
#[async_trait(?Send)]
impl LspAdapter for PyLspAdapter {
fn name(&self) -> LanguageServerName {
Self::SERVER_NAME.clone()
}
async fn check_if_user_installed(
&self,
_: &dyn LspAdapterDelegate,
_: &AsyncAppContext,
) -> Option<LanguageServerBinary> {
// We don't support user-provided pylsp, as global packages are discouraged in Python ecosystem.
None
}
async fn fetch_latest_server_version(
&self,
_: &dyn LspAdapterDelegate,
) -> Result<Box<dyn 'static + Any + Send>> {
// let uri = "https://pypi.org/pypi/python-lsp-server/json";
// let mut root_manifest = delegate
// .http_client()
// .get(&uri, Default::default(), true)
// .await?;
// let mut body = Vec::new();
// root_manifest.body_mut().read_to_end(&mut body).await?;
// let as_str = String::from_utf8(body)?;
// let json = serde_json::Value::from_str(&as_str)?;
// let latest_version = json
// .get("info")
// .and_then(|info| info.get("version"))
// .and_then(|version| version.as_str().map(ToOwned::to_owned))
// .ok_or_else(|| {
// anyhow!("PyPI response did not contain version info for python-language-server")
// })?;
Ok(Box::new(()) as Box<_>)
}
async fn fetch_server_binary(
&self,
_: Box<dyn 'static + Send + Any>,
_: PathBuf,
delegate: &dyn LspAdapterDelegate,
) -> Result<LanguageServerBinary> {
let venv = self.base_venv(delegate).await.map_err(|e| anyhow!(e))?;
let pip_path = venv.join("bin").join("pip3");
ensure!(
Command::new(pip_path.as_path())
.arg("install")
.arg("python-lsp-server")
.output()
.await?
.status
.success(),
"python-lsp-server installation failed"
);
ensure!(
Command::new(pip_path.as_path())
.arg("install")
.arg("python-lsp-server[all]")
.output()
.await?
.status
.success(),
"python-lsp-server[all] installation failed"
);
ensure!(
Command::new(pip_path)
.arg("install")
.arg("pylsp-mypy")
.output()
.await?
.status
.success(),
"pylsp-mypy installation failed"
);
let pylsp = venv.join("bin").join("pylsp");
Ok(LanguageServerBinary {
path: pylsp,
env: None,
arguments: vec![],
})
}
async fn cached_server_binary(
&self,
_: PathBuf,
delegate: &dyn LspAdapterDelegate,
) -> Option<LanguageServerBinary> {
let venv = self.base_venv(delegate).await.ok()?;
let pylsp = venv.join("bin").join("pylsp");
Some(LanguageServerBinary {
path: pylsp,
env: None,
arguments: vec![],
})
}
async fn process_completions(&self, _items: &mut [lsp::CompletionItem]) {}
async fn label_for_completion(
&self,
item: &lsp::CompletionItem,
language: &Arc<language::Language>,
) -> Option<language::CodeLabel> {
let label = &item.label;
let grammar = language.grammar()?;
let highlight_id = match item.kind? {
lsp::CompletionItemKind::METHOD => grammar.highlight_id_for_name("function.method")?,
lsp::CompletionItemKind::FUNCTION => grammar.highlight_id_for_name("function")?,
lsp::CompletionItemKind::CLASS => grammar.highlight_id_for_name("type")?,
lsp::CompletionItemKind::CONSTANT => grammar.highlight_id_for_name("constant")?,
_ => return None,
};
Some(language::CodeLabel {
text: label.clone(),
runs: vec![(0..label.len(), highlight_id)],
filter_range: 0..label.len(),
})
}
async fn label_for_symbol(
&self,
name: &str,
kind: lsp::SymbolKind,
language: &Arc<language::Language>,
) -> Option<language::CodeLabel> {
let (text, filter_range, display_range) = match kind {
lsp::SymbolKind::METHOD | lsp::SymbolKind::FUNCTION => {
let text = format!("def {}():\n", name);
let filter_range = 4..4 + name.len();
let display_range = 0..filter_range.end;
(text, filter_range, display_range)
}
lsp::SymbolKind::CLASS => {
let text = format!("class {}:", name);
let filter_range = 6..6 + name.len();
let display_range = 0..filter_range.end;
(text, filter_range, display_range)
}
lsp::SymbolKind::CONSTANT => {
let text = format!("{} = 0", name);
let filter_range = 0..name.len();
let display_range = 0..filter_range.end;
(text, filter_range, display_range)
}
_ => return None,
};
Some(language::CodeLabel {
runs: language.highlight_text(&text.as_str().into(), display_range.clone()),
text: text[display_range].to_string(),
filter_range,
})
}
async fn workspace_configuration(
self: Arc<Self>,
adapter: &Arc<dyn LspAdapterDelegate>,
toolchains: Arc<dyn LanguageToolchainStore>,
cx: &mut AsyncAppContext,
) -> Result<Value> {
let toolchain = toolchains
.active_toolchain(adapter.worktree_id(), LanguageName::new("Python"), cx)
.await;
cx.update(move |cx| {
let mut user_settings =
language_server_settings(adapter.as_ref(), &Self::SERVER_NAME, cx)
.and_then(|s| s.settings.clone())
.unwrap_or_else(|| {
json!({
"plugins": {
"rope_autoimport": {"enabled": true},
"mypy": {"enabled": true}
}
})
});
// If python.pythonPath is not set in user config, do so using our toolchain picker.
if let Some(toolchain) = toolchain {
if user_settings.is_null() {
user_settings = Value::Object(serde_json::Map::default());
}
let object = user_settings.as_object_mut().unwrap();
if let Some(python) = object
.entry("plugins")
.or_insert(Value::Object(serde_json::Map::default()))
.as_object_mut()
{
if let Some(jedi) = python
.entry("jedi")
.or_insert(Value::Object(serde_json::Map::default()))
.as_object_mut()
{
jedi.insert(
"environment".to_string(),
Value::String(toolchain.path.clone().into()),
);
}
if let Some(pylint) = python
.entry("mypy")
.or_insert(Value::Object(serde_json::Map::default()))
.as_object_mut()
{
pylint.insert(
"overrides".to_string(),
Value::Array(vec![
Value::String("--python-executable".into()),
Value::String(toolchain.path.into()),
]),
);
}
}
}
user_settings = Value::Object(serde_json::Map::from_iter([(
"pylsp".to_string(),
user_settings,
)]));
user_settings
})
}
}
#[cfg(test)]
mod tests {
use gpui::{BorrowAppContext, Context, ModelContext, TestAppContext};