use anyhow::{anyhow, Result};use async_trait::async_trait;use futures::StreamExt;use gpui::AsyncAppContext;use language::{    language_settings::AllLanguageSettings, LanguageToolchainStore, LspAdapter, LspAdapterDelegate,};use lsp::{LanguageServerBinary, LanguageServerName};use node_runtime::NodeRuntime;use project::lsp_store::language_server_settings;use serde_json::Value;use settings::{Settings, SettingsLocation};use smol::fs;use std::{    any::Any,    ffi::OsString,    path::{Path, PathBuf},    sync::Arc,};use util::{maybe, merge_json_value_into, ResultExt}; const SERVER_PATH: &str = "node_modules/yaml-language-server/bin/yaml-language-server"; fn server_binary_arguments(server_path: &Path) -> Vec<OsString> {    vec![server_path.into(), "--stdio".into()]} pub struct YamlLspAdapter {    node: NodeRuntime,} impl YamlLspAdapter {    const SERVER_NAME: LanguageServerName = LanguageServerName::new_static("yaml-language-server");    pub fn new(node: NodeRuntime) -> Self {        YamlLspAdapter { node }    }} #[async_trait(?Send)]impl LspAdapter for YamlLspAdapter {    fn name(&self) -> LanguageServerName {        Self::SERVER_NAME.clone()    }     async fn fetch_latest_server_version(        &self,        _: &dyn LspAdapterDelegate,    ) -> Result<Box<dyn 'static + Any + Send>> {        Ok(Box::new(            self.node                .npm_package_latest_version("yaml-language-server")                .await?,        ) as Box<_>)    }     async fn fetch_server_binary(        &self,        latest_version: Box<dyn 'static + Send + Any>,        container_dir: PathBuf,        _: &dyn LspAdapterDelegate,    ) -> Result<LanguageServerBinary> {        let latest_version = latest_version.downcast::<String>().unwrap();        let server_path = container_dir.join(SERVER_PATH);        let package_name = "yaml-language-server";         let should_install_language_server = self            .node            .should_install_npm_package(package_name, &server_path, &container_dir, &latest_version)            .await;         if should_install_language_server {            self.node                .npm_install_packages(&container_dir, &[(package_name, latest_version.as_str())])                .await?;        }         Ok(LanguageServerBinary {            path: self.node.binary_path().await?,            env: None,            arguments: server_binary_arguments(&server_path),        })    }     async fn cached_server_binary(        &self,        container_dir: PathBuf,        _: &dyn LspAdapterDelegate,    ) -> Option<LanguageServerBinary> {        get_cached_server_binary(container_dir, &self.node).await    }     async fn workspace_configuration(        self: Arc<Self>,        delegate: &Arc<dyn LspAdapterDelegate>,        _: Arc<dyn LanguageToolchainStore>,        cx: &mut AsyncAppContext,    ) -> Result<Value> {        let location = SettingsLocation {            worktree_id: delegate.worktree_id(),            path: delegate.worktree_root_path(),        };         let tab_size = cx.update(|cx| {            AllLanguageSettings::get(Some(location), cx)                .language(Some(location), Some(&"YAML".into()), cx)                .tab_size        })?;        let mut options = serde_json::json!({"[yaml]": {"editor.tabSize": tab_size}});         let project_options = cx.update(|cx| {            language_server_settings(delegate.as_ref(), &Self::SERVER_NAME, cx)                .and_then(|s| s.settings.clone())        })?;        if let Some(override_options) = project_options {            merge_json_value_into(override_options, &mut options);        }        Ok(options)    }} async fn get_cached_server_binary(    container_dir: PathBuf,    node: &NodeRuntime,) -> Option<LanguageServerBinary> {    maybe!(async {        let mut last_version_dir = 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_dir() {                last_version_dir = Some(entry.path());            }        }        let last_version_dir = last_version_dir.ok_or_else(|| anyhow!("no cached binary"))?;        let server_path = last_version_dir.join(SERVER_PATH);        if server_path.exists() {            Ok(LanguageServerBinary {                path: node.binary_path().await?,                env: None,                arguments: server_binary_arguments(&server_path),            })        } else {            Err(anyhow!(                "missing executable in directory {:?}",                last_version_dir            ))        }    })    .await    .log_err()}