1use anyhow::{Context as _, Result};
2use async_trait::async_trait;
3use futures::StreamExt;
4use gpui::AsyncApp;
5use language::{
6 LspAdapter, LspAdapterDelegate, LspInstaller, Toolchain, language_settings::AllLanguageSettings,
7};
8use lsp::{LanguageServerBinary, LanguageServerName};
9use node_runtime::{NodeRuntime, VersionStrategy};
10use project::lsp_store::language_server_settings;
11use serde_json::Value;
12use settings::{Settings, SettingsLocation};
13use smol::fs;
14use std::{
15 ffi::OsString,
16 path::{Path, PathBuf},
17 sync::Arc,
18};
19use util::{ResultExt, maybe, merge_json_value_into, rel_path::RelPath};
20
21const SERVER_PATH: &str = "node_modules/yaml-language-server/bin/yaml-language-server";
22
23fn server_binary_arguments(server_path: &Path) -> Vec<OsString> {
24 vec![server_path.into(), "--stdio".into()]
25}
26
27pub struct YamlLspAdapter {
28 node: NodeRuntime,
29}
30
31impl YamlLspAdapter {
32 const SERVER_NAME: LanguageServerName = LanguageServerName::new_static("yaml-language-server");
33 const PACKAGE_NAME: &str = "yaml-language-server";
34 pub fn new(node: NodeRuntime) -> Self {
35 YamlLspAdapter { node }
36 }
37}
38
39impl LspInstaller for YamlLspAdapter {
40 type BinaryVersion = String;
41
42 async fn fetch_latest_server_version(
43 &self,
44 _: &dyn LspAdapterDelegate,
45 _: bool,
46 _: &mut AsyncApp,
47 ) -> Result<String> {
48 self.node
49 .npm_package_latest_version("yaml-language-server")
50 .await
51 }
52
53 async fn check_if_user_installed(
54 &self,
55 delegate: &dyn LspAdapterDelegate,
56 _: Option<Toolchain>,
57 _: &AsyncApp,
58 ) -> Option<LanguageServerBinary> {
59 let path = delegate.which(Self::SERVER_NAME.as_ref()).await?;
60 let env = delegate.shell_env().await;
61
62 Some(LanguageServerBinary {
63 path,
64 env: Some(env),
65 arguments: vec!["--stdio".into()],
66 })
67 }
68
69 async fn fetch_server_binary(
70 &self,
71 latest_version: String,
72 container_dir: PathBuf,
73 _: &dyn LspAdapterDelegate,
74 ) -> Result<LanguageServerBinary> {
75 let server_path = container_dir.join(SERVER_PATH);
76
77 self.node
78 .npm_install_packages(
79 &container_dir,
80 &[(Self::PACKAGE_NAME, latest_version.as_str())],
81 )
82 .await?;
83
84 Ok(LanguageServerBinary {
85 path: self.node.binary_path().await?,
86 env: None,
87 arguments: server_binary_arguments(&server_path),
88 })
89 }
90
91 async fn check_if_version_installed(
92 &self,
93 version: &String,
94 container_dir: &PathBuf,
95 _: &dyn LspAdapterDelegate,
96 ) -> Option<LanguageServerBinary> {
97 let server_path = container_dir.join(SERVER_PATH);
98
99 let should_install_language_server = self
100 .node
101 .should_install_npm_package(
102 Self::PACKAGE_NAME,
103 &server_path,
104 container_dir,
105 VersionStrategy::Latest(version),
106 )
107 .await;
108
109 if should_install_language_server {
110 None
111 } else {
112 Some(LanguageServerBinary {
113 path: self.node.binary_path().await.ok()?,
114 env: None,
115 arguments: server_binary_arguments(&server_path),
116 })
117 }
118 }
119
120 async fn cached_server_binary(
121 &self,
122 container_dir: PathBuf,
123 _: &dyn LspAdapterDelegate,
124 ) -> Option<LanguageServerBinary> {
125 get_cached_server_binary(container_dir, &self.node).await
126 }
127}
128
129#[async_trait(?Send)]
130impl LspAdapter for YamlLspAdapter {
131 fn name(&self) -> LanguageServerName {
132 Self::SERVER_NAME
133 }
134
135 async fn workspace_configuration(
136 self: Arc<Self>,
137
138 delegate: &Arc<dyn LspAdapterDelegate>,
139 _: Option<Toolchain>,
140 cx: &mut AsyncApp,
141 ) -> Result<Value> {
142 let location = SettingsLocation {
143 worktree_id: delegate.worktree_id(),
144 path: RelPath::empty(),
145 };
146
147 let tab_size = cx.update(|cx| {
148 AllLanguageSettings::get(Some(location), cx)
149 .language(Some(location), Some(&"YAML".into()), cx)
150 .tab_size
151 })?;
152
153 let mut options = serde_json::json!({
154 "[yaml]": {"editor.tabSize": tab_size},
155 "yaml": {"format": {"enable": true}}
156 });
157
158 let project_options = cx.update(|cx| {
159 language_server_settings(delegate.as_ref(), &Self::SERVER_NAME, cx)
160 .and_then(|s| s.settings.clone())
161 })?;
162 if let Some(override_options) = project_options {
163 merge_json_value_into(override_options, &mut options);
164 }
165 Ok(options)
166 }
167}
168
169async fn get_cached_server_binary(
170 container_dir: PathBuf,
171 node: &NodeRuntime,
172) -> Option<LanguageServerBinary> {
173 maybe!(async {
174 let mut last_version_dir = None;
175 let mut entries = fs::read_dir(&container_dir).await?;
176 while let Some(entry) = entries.next().await {
177 let entry = entry?;
178 if entry.file_type().await?.is_dir() {
179 last_version_dir = Some(entry.path());
180 }
181 }
182 let last_version_dir = last_version_dir.context("no cached binary")?;
183 let server_path = last_version_dir.join(SERVER_PATH);
184 anyhow::ensure!(
185 server_path.exists(),
186 "missing executable in directory {last_version_dir:?}"
187 );
188 Ok(LanguageServerBinary {
189 path: node.binary_path().await?,
190 env: None,
191 arguments: server_binary_arguments(&server_path),
192 })
193 })
194 .await
195 .log_err()
196}