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 fn initialization_options(&self) -> Option<serde_json::Value> {
94 let config = json!({
95 "inlayHints": {
96 "parameterNames": {
97 "enabled": "all",
98 "suppressWhenArgumentMatchesName": false
99 },
100 "parameterTypes": {
101 "enabled": true
102 },
103 "variableTypes": {
104 "enabled": true,
105 "suppressWhenTypeMatchesName": false
106 },
107 "propertyDeclarationTypes": {
108 "enabled": true
109 },
110 "functionLikeReturnType": {
111 "enabled": true
112 },
113 "enumMemberValues": {
114 "enabled": true
115 }
116 }
117 });
118
119 Some(json!({
120 "provideFormatter": true,
121 "configuration": {
122 "typescript": config,
123 "javascript": config
124 }
125 }))
126 }
127
128 fn prettier_plugins(&self) -> &[&'static str] {
129 &["prettier-plugin-svelte"]
130 }
131}
132
133async fn get_cached_server_binary(
134 container_dir: PathBuf,
135 node: &dyn NodeRuntime,
136) -> Option<LanguageServerBinary> {
137 async_maybe!({
138 let mut last_version_dir = None;
139 let mut entries = fs::read_dir(&container_dir).await?;
140 while let Some(entry) = entries.next().await {
141 let entry = entry?;
142 if entry.file_type().await?.is_dir() {
143 last_version_dir = Some(entry.path());
144 }
145 }
146 let last_version_dir = last_version_dir.ok_or_else(|| anyhow!("no cached binary"))?;
147 let server_path = last_version_dir.join(SERVER_PATH);
148 if server_path.exists() {
149 Ok(LanguageServerBinary {
150 path: node.binary_path().await?,
151 env: None,
152 arguments: server_binary_arguments(&server_path),
153 })
154 } else {
155 Err(anyhow!(
156 "missing executable in directory {:?}",
157 last_version_dir
158 ))
159 }
160 })
161 .await
162 .log_err()
163}