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Add required-root-patterns for situational lsp activation (#8696)
* Added required-root-patterns for situational lsp activation using globbing
* Replaced filter_map with flatten
* updated book to include required-root-patterns option
* fixed wrong function name for path
* Added globset to helix-core. Moved globset building to config parsing.
* Normalize implements AsRef
* cargo fmt
* Revert "cargo fmt"
This reverts commit ca8ce123e8
.
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ac8d1f62a1
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@ -122,13 +122,14 @@ ## Language Server configuration
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These are the available options for a language server.
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| Key | Description |
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| ---- | ----------- |
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| `command` | The name or path of the language server binary to execute. Binaries must be in `$PATH` |
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| `args` | A list of arguments to pass to the language server binary |
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| `config` | LSP initialization options |
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| `timeout` | The maximum time a request to the language server may take, in seconds. Defaults to `20` |
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| `environment` | Any environment variables that will be used when starting the language server `{ "KEY1" = "Value1", "KEY2" = "Value2" }` |
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| Key | Description |
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| ---- | ----------- |
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| `command` | The name or path of the language server binary to execute. Binaries must be in `$PATH` |
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| `args` | A list of arguments to pass to the language server binary |
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| `config` | LSP initialization options |
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| `timeout` | The maximum time a request to the language server may take, in seconds. Defaults to `20` |
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| `environment` | Any environment variables that will be used when starting the language server `{ "KEY1" = "Value1", "KEY2" = "Value2" }` |
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| `required-root-patterns` | A list of `glob` patterns to look for in the working directory. The language server is started if at least one of them is found. |
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A `format` sub-table within `config` can be used to pass extra formatting options to
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[Document Formatting Requests](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#textDocument_formatting).
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@ -53,6 +53,7 @@ globset = "0.4.14"
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nucleo.workspace = true
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parking_lot = "0.12"
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globset = "0.4.14"
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[dev-dependencies]
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quickcheck = { version = "1", default-features = false }
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@ -10,6 +10,7 @@
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use ahash::RandomState;
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use arc_swap::{ArcSwap, Guard};
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use bitflags::bitflags;
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use globset::GlobSet;
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use hashbrown::raw::RawTable;
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use slotmap::{DefaultKey as LayerId, HopSlotMap};
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@ -365,6 +366,22 @@ fn serialize_lang_features<S>(
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serializer.end()
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}
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fn deserialize_required_root_patterns<'de, D>(deserializer: D) -> Result<Option<GlobSet>, D::Error>
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where
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D: serde::Deserializer<'de>,
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{
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let patterns = Vec::<String>::deserialize(deserializer)?;
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if patterns.is_empty() {
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return Ok(None);
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}
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let mut builder = globset::GlobSetBuilder::new();
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for pattern in patterns {
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let glob = globset::Glob::new(&pattern).map_err(serde::de::Error::custom)?;
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builder.add(glob);
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}
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builder.build().map(Some).map_err(serde::de::Error::custom)
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}
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#[derive(Debug, Serialize, Deserialize)]
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#[serde(rename_all = "kebab-case")]
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pub struct LanguageServerConfiguration {
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@ -378,6 +395,12 @@ pub struct LanguageServerConfiguration {
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pub config: Option<serde_json::Value>,
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#[serde(default = "default_timeout")]
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pub timeout: u64,
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#[serde(
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default,
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skip_serializing,
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deserialize_with = "deserialize_required_root_patterns"
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)]
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pub required_root_patterns: Option<GlobSet>,
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}
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#[derive(Debug, Clone, Serialize, Deserialize)]
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@ -177,12 +177,11 @@ pub fn start(
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args: &[String],
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config: Option<Value>,
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server_environment: HashMap<String, String>,
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root_markers: &[String],
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manual_roots: &[PathBuf],
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root_path: PathBuf,
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root_uri: Option<lsp::Url>,
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id: usize,
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name: String,
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req_timeout: u64,
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doc_path: Option<&std::path::PathBuf>,
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) -> Result<(Self, UnboundedReceiver<(usize, Call)>, Arc<Notify>)> {
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// Resolve path to the binary
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let cmd = helix_stdx::env::which(cmd)?;
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@ -206,22 +205,6 @@ pub fn start(
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let (server_rx, server_tx, initialize_notify) =
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Transport::start(reader, writer, stderr, id, name.clone());
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let (workspace, workspace_is_cwd) = find_workspace();
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let workspace = path::normalize(workspace);
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let root = find_lsp_workspace(
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doc_path
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.and_then(|x| x.parent().and_then(|x| x.to_str()))
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.unwrap_or("."),
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root_markers,
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manual_roots,
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&workspace,
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workspace_is_cwd,
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);
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// `root_uri` and `workspace_folder` can be empty in case there is no workspace
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// `root_url` can not, use `workspace` as a fallback
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let root_path = root.clone().unwrap_or_else(|| workspace.clone());
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let root_uri = root.and_then(|root| lsp::Url::from_file_path(root).ok());
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let workspace_folders = root_uri
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.clone()
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@ -680,7 +680,7 @@ fn start_client(
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doc_path: Option<&std::path::PathBuf>,
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root_dirs: &[PathBuf],
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enable_snippets: bool,
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) -> Result<Arc<Client>> {
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) -> Result<Option<Arc<Client>>> {
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let config = self
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.syn_loader
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.language_server_configs()
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@ -688,7 +688,7 @@ fn start_client(
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.ok_or_else(|| anyhow::anyhow!("Language server '{name}' not defined"))?;
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let id = self.counter;
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self.counter += 1;
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let NewClient(client, incoming) = start_client(
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if let Some(NewClient(client, incoming)) = start_client(
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id,
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name,
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ls_config,
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@ -696,9 +696,12 @@ fn start_client(
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doc_path,
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root_dirs,
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enable_snippets,
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)?;
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self.incoming.push(UnboundedReceiverStream::new(incoming));
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Ok(client)
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)? {
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self.incoming.push(UnboundedReceiverStream::new(incoming));
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Ok(Some(client))
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} else {
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Ok(None)
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}
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}
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/// If this method is called, all documents that have a reference to language servers used by the language config have to refresh their language servers,
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@ -723,8 +726,8 @@ pub fn restart(
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root_dirs,
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enable_snippets,
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) {
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Ok(client) => client,
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error => return Some(error),
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Ok(client) => client?,
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Err(error) => return Some(Err(error)),
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};
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let old_clients = self
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.inner
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@ -764,13 +767,13 @@ pub fn get<'a>(
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root_dirs: &'a [PathBuf],
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enable_snippets: bool,
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) -> impl Iterator<Item = (LanguageServerName, Result<Arc<Client>>)> + 'a {
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language_config.language_servers.iter().map(
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language_config.language_servers.iter().filter_map(
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move |LanguageServerFeatures { name, .. }| {
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if let Some(clients) = self.inner.get(name) {
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if let Some((_, client)) = clients.iter().enumerate().find(|(i, client)| {
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client.try_add_doc(&language_config.roots, root_dirs, doc_path, *i == 0)
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}) {
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return (name.to_owned(), Ok(client.clone()));
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return Some((name.to_owned(), Ok(client.clone())));
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}
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}
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match self.start_client(
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@ -781,13 +784,14 @@ pub fn get<'a>(
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enable_snippets,
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) {
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Ok(client) => {
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let client = client?;
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self.inner
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.entry(name.to_owned())
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.or_default()
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.push(client.clone());
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(name.clone(), Ok(client))
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Some((name.clone(), Ok(client)))
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}
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Err(err) => (name.to_owned(), Err(err)),
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Err(err) => Some((name.to_owned(), Err(err))),
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}
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},
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)
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@ -888,18 +892,45 @@ fn start_client(
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doc_path: Option<&std::path::PathBuf>,
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root_dirs: &[PathBuf],
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enable_snippets: bool,
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) -> Result<NewClient> {
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) -> Result<Option<NewClient>> {
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let (workspace, workspace_is_cwd) = helix_loader::find_workspace();
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let workspace = path::normalize(workspace);
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let root = find_lsp_workspace(
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doc_path
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.and_then(|x| x.parent().and_then(|x| x.to_str()))
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.unwrap_or("."),
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&config.roots,
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config.workspace_lsp_roots.as_deref().unwrap_or(root_dirs),
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&workspace,
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workspace_is_cwd,
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);
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// `root_uri` and `workspace_folder` can be empty in case there is no workspace
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// `root_url` can not, use `workspace` as a fallback
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let root_path = root.clone().unwrap_or_else(|| workspace.clone());
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let root_uri = root.and_then(|root| lsp::Url::from_file_path(root).ok());
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if let Some(globset) = &ls_config.required_root_patterns {
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if !root_path
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.read_dir()?
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.flatten()
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.map(|entry| entry.file_name())
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.any(|entry| globset.is_match(entry))
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{
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return Ok(None);
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}
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}
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let (client, incoming, initialize_notify) = Client::start(
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&ls_config.command,
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&ls_config.args,
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ls_config.config.clone(),
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ls_config.environment.clone(),
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&config.roots,
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config.workspace_lsp_roots.as_deref().unwrap_or(root_dirs),
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root_path,
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root_uri,
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id,
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name,
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ls_config.timeout,
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doc_path,
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)?;
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let client = Arc::new(client);
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@ -938,7 +969,7 @@ fn start_client(
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initialize_notify.notify_one();
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});
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Ok(NewClient(client, incoming))
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Ok(Some(NewClient(client, incoming)))
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}
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/// Find an LSP workspace of a file using the following mechanism:
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