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: &'static 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]
34impl LspAdapter for SvelteLspAdapter {
35 fn name(&self) -> LanguageServerName {
36 LanguageServerName("svelte-language-server".into())
37 }
38
39 fn short_name(&self) -> &'static str {
40 "svelte"
41 }
42
43 async fn fetch_latest_server_version(
44 &self,
45 _: &dyn LspAdapterDelegate,
46 ) -> Result<Box<dyn 'static + Any + Send>> {
47 Ok(Box::new(
48 self.node
49 .npm_package_latest_version("svelte-language-server")
50 .await?,
51 ) as Box<_>)
52 }
53
54 async fn fetch_server_binary(
55 &self,
56 version: Box<dyn 'static + Send + Any>,
57 container_dir: PathBuf,
58 _: &dyn LspAdapterDelegate,
59 ) -> Result<LanguageServerBinary> {
60 let version = version.downcast::<String>().unwrap();
61 let server_path = container_dir.join(SERVER_PATH);
62
63 if fs::metadata(&server_path).await.is_err() {
64 self.node
65 .npm_install_packages(
66 &container_dir,
67 &[("svelte-language-server", version.as_str())],
68 )
69 .await?;
70 }
71
72 Ok(LanguageServerBinary {
73 path: self.node.binary_path().await?,
74 env: None,
75 arguments: server_binary_arguments(&server_path),
76 })
77 }
78
79 async fn cached_server_binary(
80 &self,
81 container_dir: PathBuf,
82 _: &dyn LspAdapterDelegate,
83 ) -> Option<LanguageServerBinary> {
84 get_cached_server_binary(container_dir, &*self.node).await
85 }
86
87 async fn installation_test_binary(
88 &self,
89 container_dir: PathBuf,
90 ) -> Option<LanguageServerBinary> {
91 get_cached_server_binary(container_dir, &*self.node).await
92 }
93
94 fn initialization_options(&self) -> Option<serde_json::Value> {
95 let config = json!({
96 "inlayHints": {
97 "parameterNames": {
98 "enabled": "all",
99 "suppressWhenArgumentMatchesName": false
100 },
101 "parameterTypes": {
102 "enabled": true
103 },
104 "variableTypes": {
105 "enabled": true,
106 "suppressWhenTypeMatchesName": false
107 },
108 "propertyDeclarationTypes": {
109 "enabled": true
110 },
111 "functionLikeReturnType": {
112 "enabled": true
113 },
114 "enumMemberValues": {
115 "enabled": true
116 }
117 }
118 });
119
120 Some(json!({
121 "provideFormatter": true,
122 "configuration": {
123 "typescript": config,
124 "javascript": config
125 }
126 }))
127 }
128
129 fn prettier_plugins(&self) -> &[&'static str] {
130 &["prettier-plugin-svelte"]
131 }
132}
133
134async fn get_cached_server_binary(
135 container_dir: PathBuf,
136 node: &dyn NodeRuntime,
137) -> Option<LanguageServerBinary> {
138 async_maybe!({
139 let mut last_version_dir = None;
140 let mut entries = fs::read_dir(&container_dir).await?;
141 while let Some(entry) = entries.next().await {
142 let entry = entry?;
143 if entry.file_type().await?.is_dir() {
144 last_version_dir = Some(entry.path());
145 }
146 }
147 let last_version_dir = last_version_dir.ok_or_else(|| anyhow!("no cached binary"))?;
148 let server_path = last_version_dir.join(SERVER_PATH);
149 if server_path.exists() {
150 Ok(LanguageServerBinary {
151 path: node.binary_path().await?,
152 env: None,
153 arguments: server_binary_arguments(&server_path),
154 })
155 } else {
156 Err(anyhow!(
157 "missing executable in directory {:?}",
158 last_version_dir
159 ))
160 }
161 })
162 .await
163 .log_err()
164}