1use anyhow::{anyhow, Result};
2use async_trait::async_trait;
3use futures::StreamExt;
4use language::{LanguageServerName, LspAdapter, LspAdapterDelegate};
5use lsp::LanguageServerBinary;
6use node_runtime::NodeRuntime;
7use serde_json::json;
8use smol::fs;
9use std::{
10 any::Any,
11 ffi::OsString,
12 path::{Path, PathBuf},
13 sync::Arc,
14};
15use util::{async_maybe, ResultExt};
16
17const SERVER_PATH: &str = "node_modules/svelte-language-server/bin/server.js";
18
19fn server_binary_arguments(server_path: &Path) -> Vec<OsString> {
20 vec![server_path.into(), "--stdio".into()]
21}
22
23pub struct SvelteLspAdapter {
24 node: Arc<dyn NodeRuntime>,
25}
26
27impl SvelteLspAdapter {
28 pub fn new(node: Arc<dyn NodeRuntime>) -> Self {
29 SvelteLspAdapter { node }
30 }
31}
32
33#[async_trait(?Send)]
34impl LspAdapter for SvelteLspAdapter {
35 fn name(&self) -> LanguageServerName {
36 LanguageServerName("svelte-language-server".into())
37 }
38
39 async fn fetch_latest_server_version(
40 &self,
41 _: &dyn LspAdapterDelegate,
42 ) -> Result<Box<dyn 'static + Any + Send>> {
43 Ok(Box::new(
44 self.node
45 .npm_package_latest_version("svelte-language-server")
46 .await?,
47 ) as Box<_>)
48 }
49
50 async fn fetch_server_binary(
51 &self,
52 latest_version: Box<dyn 'static + Send + Any>,
53 container_dir: PathBuf,
54 _: &dyn LspAdapterDelegate,
55 ) -> Result<LanguageServerBinary> {
56 let latest_version = latest_version.downcast::<String>().unwrap();
57 let server_path = container_dir.join(SERVER_PATH);
58 let package_name = "svelte-language-server";
59
60 let should_install_language_server = self
61 .node
62 .should_install_npm_package(package_name, &server_path, &container_dir, &latest_version)
63 .await;
64
65 if should_install_language_server {
66 self.node
67 .npm_install_packages(&container_dir, &[(package_name, latest_version.as_str())])
68 .await?;
69 }
70
71 Ok(LanguageServerBinary {
72 path: self.node.binary_path().await?,
73 env: None,
74 arguments: server_binary_arguments(&server_path),
75 })
76 }
77
78 async fn cached_server_binary(
79 &self,
80 container_dir: PathBuf,
81 _: &dyn LspAdapterDelegate,
82 ) -> Option<LanguageServerBinary> {
83 get_cached_server_binary(container_dir, &*self.node).await
84 }
85
86 async fn installation_test_binary(
87 &self,
88 container_dir: PathBuf,
89 ) -> Option<LanguageServerBinary> {
90 get_cached_server_binary(container_dir, &*self.node).await
91 }
92
93 async fn initialization_options(
94 self: Arc<Self>,
95 _: &Arc<dyn LspAdapterDelegate>,
96 ) -> Result<Option<serde_json::Value>> {
97 let config = json!({
98 "inlayHints": {
99 "parameterNames": {
100 "enabled": "all",
101 "suppressWhenArgumentMatchesName": false
102 },
103 "parameterTypes": {
104 "enabled": true
105 },
106 "variableTypes": {
107 "enabled": true,
108 "suppressWhenTypeMatchesName": false
109 },
110 "propertyDeclarationTypes": {
111 "enabled": true
112 },
113 "functionLikeReturnType": {
114 "enabled": true
115 },
116 "enumMemberValues": {
117 "enabled": true
118 }
119 }
120 });
121
122 Ok(Some(json!({
123 "provideFormatter": true,
124 "configuration": {
125 "typescript": config,
126 "javascript": config
127 }
128 })))
129 }
130}
131
132async fn get_cached_server_binary(
133 container_dir: PathBuf,
134 node: &dyn NodeRuntime,
135) -> Option<LanguageServerBinary> {
136 async_maybe!({
137 let mut last_version_dir = None;
138 let mut entries = fs::read_dir(&container_dir).await?;
139 while let Some(entry) = entries.next().await {
140 let entry = entry?;
141 if entry.file_type().await?.is_dir() {
142 last_version_dir = Some(entry.path());
143 }
144 }
145 let last_version_dir = last_version_dir.ok_or_else(|| anyhow!("no cached binary"))?;
146 let server_path = last_version_dir.join(SERVER_PATH);
147 if server_path.exists() {
148 Ok(LanguageServerBinary {
149 path: node.binary_path().await?,
150 env: None,
151 arguments: server_binary_arguments(&server_path),
152 })
153 } else {
154 Err(anyhow!(
155 "missing executable in directory {:?}",
156 last_version_dir
157 ))
158 }
159 })
160 .await
161 .log_err()
162}