1use crate::wasm_host::{wit::ToWasmtimeResult, WasmState};
2use ::http_client::{AsyncBody, HttpRequestExt};
3use ::settings::{Settings, WorktreeId};
4use anyhow::{anyhow, bail, Context, Result};
5use async_compression::futures::bufread::GzipDecoder;
6use async_tar::Archive;
7use async_trait::async_trait;
8use extension::{KeyValueStoreDelegate, WorktreeDelegate};
9use futures::{io::BufReader, FutureExt as _};
10use futures::{lock::Mutex, AsyncReadExt};
11use language::LanguageName;
12use language::{language_settings::AllLanguageSettings, LanguageServerBinaryStatus};
13use project::project_settings::ProjectSettings;
14use semantic_version::SemanticVersion;
15use std::{
16 path::{Path, PathBuf},
17 sync::{Arc, OnceLock},
18};
19use util::maybe;
20use wasmtime::component::{Linker, Resource};
21
22use super::latest;
23
24pub const MIN_VERSION: SemanticVersion = SemanticVersion::new(0, 1, 0);
25pub const MAX_VERSION: SemanticVersion = SemanticVersion::new(0, 1, 0);
26
27wasmtime::component::bindgen!({
28 async: true,
29 trappable_imports: true,
30 path: "../extension_api/wit/since_v0.1.0",
31 with: {
32 "worktree": ExtensionWorktree,
33 "key-value-store": ExtensionKeyValueStore,
34 "zed:extension/http-client/http-response-stream": ExtensionHttpResponseStream,
35 "zed:extension/github": latest::zed::extension::github,
36 "zed:extension/nodejs": latest::zed::extension::nodejs,
37 "zed:extension/platform": latest::zed::extension::platform,
38 "zed:extension/slash-command": latest::zed::extension::slash_command,
39 },
40});
41
42pub use self::zed::extension::*;
43
44mod settings {
45 include!(concat!(env!("OUT_DIR"), "/since_v0.1.0/settings.rs"));
46}
47
48pub type ExtensionWorktree = Arc<dyn WorktreeDelegate>;
49pub type ExtensionKeyValueStore = Arc<dyn KeyValueStoreDelegate>;
50pub type ExtensionHttpResponseStream = Arc<Mutex<::http_client::Response<AsyncBody>>>;
51
52pub fn linker() -> &'static Linker<WasmState> {
53 static LINKER: OnceLock<Linker<WasmState>> = OnceLock::new();
54 LINKER.get_or_init(|| super::new_linker(Extension::add_to_linker))
55}
56
57impl From<Command> for latest::Command {
58 fn from(value: Command) -> Self {
59 Self {
60 command: value.command,
61 args: value.args,
62 env: value.env,
63 }
64 }
65}
66
67impl From<SettingsLocation> for latest::SettingsLocation {
68 fn from(value: SettingsLocation) -> Self {
69 Self {
70 worktree_id: value.worktree_id,
71 path: value.path,
72 }
73 }
74}
75
76impl From<LanguageServerInstallationStatus> for latest::LanguageServerInstallationStatus {
77 fn from(value: LanguageServerInstallationStatus) -> Self {
78 match value {
79 LanguageServerInstallationStatus::None => Self::None,
80 LanguageServerInstallationStatus::Downloading => Self::Downloading,
81 LanguageServerInstallationStatus::CheckingForUpdate => Self::CheckingForUpdate,
82 LanguageServerInstallationStatus::Failed(message) => Self::Failed(message),
83 }
84 }
85}
86
87impl From<DownloadedFileType> for latest::DownloadedFileType {
88 fn from(value: DownloadedFileType) -> Self {
89 match value {
90 DownloadedFileType::Gzip => Self::Gzip,
91 DownloadedFileType::GzipTar => Self::GzipTar,
92 DownloadedFileType::Zip => Self::Zip,
93 DownloadedFileType::Uncompressed => Self::Uncompressed,
94 }
95 }
96}
97
98impl From<Range> for latest::Range {
99 fn from(value: Range) -> Self {
100 Self {
101 start: value.start,
102 end: value.end,
103 }
104 }
105}
106
107impl From<CodeLabelSpan> for latest::CodeLabelSpan {
108 fn from(value: CodeLabelSpan) -> Self {
109 match value {
110 CodeLabelSpan::CodeRange(range) => Self::CodeRange(range.into()),
111 CodeLabelSpan::Literal(literal) => Self::Literal(literal.into()),
112 }
113 }
114}
115
116impl From<CodeLabelSpanLiteral> for latest::CodeLabelSpanLiteral {
117 fn from(value: CodeLabelSpanLiteral) -> Self {
118 Self {
119 text: value.text,
120 highlight_name: value.highlight_name,
121 }
122 }
123}
124
125impl From<CodeLabel> for latest::CodeLabel {
126 fn from(value: CodeLabel) -> Self {
127 Self {
128 code: value.code,
129 spans: value.spans.into_iter().map(Into::into).collect(),
130 filter_range: value.filter_range.into(),
131 }
132 }
133}
134
135impl From<latest::Completion> for Completion {
136 fn from(value: latest::Completion) -> Self {
137 Self {
138 label: value.label,
139 detail: value.detail,
140 kind: value.kind.map(Into::into),
141 insert_text_format: value.insert_text_format.map(Into::into),
142 }
143 }
144}
145
146impl From<latest::lsp::CompletionKind> for lsp::CompletionKind {
147 fn from(value: latest::lsp::CompletionKind) -> Self {
148 match value {
149 latest::lsp::CompletionKind::Text => Self::Text,
150 latest::lsp::CompletionKind::Method => Self::Method,
151 latest::lsp::CompletionKind::Function => Self::Function,
152 latest::lsp::CompletionKind::Constructor => Self::Constructor,
153 latest::lsp::CompletionKind::Field => Self::Field,
154 latest::lsp::CompletionKind::Variable => Self::Variable,
155 latest::lsp::CompletionKind::Class => Self::Class,
156 latest::lsp::CompletionKind::Interface => Self::Interface,
157 latest::lsp::CompletionKind::Module => Self::Module,
158 latest::lsp::CompletionKind::Property => Self::Property,
159 latest::lsp::CompletionKind::Unit => Self::Unit,
160 latest::lsp::CompletionKind::Value => Self::Value,
161 latest::lsp::CompletionKind::Enum => Self::Enum,
162 latest::lsp::CompletionKind::Keyword => Self::Keyword,
163 latest::lsp::CompletionKind::Snippet => Self::Snippet,
164 latest::lsp::CompletionKind::Color => Self::Color,
165 latest::lsp::CompletionKind::File => Self::File,
166 latest::lsp::CompletionKind::Reference => Self::Reference,
167 latest::lsp::CompletionKind::Folder => Self::Folder,
168 latest::lsp::CompletionKind::EnumMember => Self::EnumMember,
169 latest::lsp::CompletionKind::Constant => Self::Constant,
170 latest::lsp::CompletionKind::Struct => Self::Struct,
171 latest::lsp::CompletionKind::Event => Self::Event,
172 latest::lsp::CompletionKind::Operator => Self::Operator,
173 latest::lsp::CompletionKind::TypeParameter => Self::TypeParameter,
174 latest::lsp::CompletionKind::Other(kind) => Self::Other(kind),
175 }
176 }
177}
178
179impl From<latest::lsp::InsertTextFormat> for lsp::InsertTextFormat {
180 fn from(value: latest::lsp::InsertTextFormat) -> Self {
181 match value {
182 latest::lsp::InsertTextFormat::PlainText => Self::PlainText,
183 latest::lsp::InsertTextFormat::Snippet => Self::Snippet,
184 latest::lsp::InsertTextFormat::Other(value) => Self::Other(value),
185 }
186 }
187}
188
189impl From<latest::lsp::Symbol> for lsp::Symbol {
190 fn from(value: latest::lsp::Symbol) -> Self {
191 Self {
192 name: value.name,
193 kind: value.kind.into(),
194 }
195 }
196}
197
198impl From<latest::lsp::SymbolKind> for lsp::SymbolKind {
199 fn from(value: latest::lsp::SymbolKind) -> Self {
200 match value {
201 latest::lsp::SymbolKind::File => Self::File,
202 latest::lsp::SymbolKind::Module => Self::Module,
203 latest::lsp::SymbolKind::Namespace => Self::Namespace,
204 latest::lsp::SymbolKind::Package => Self::Package,
205 latest::lsp::SymbolKind::Class => Self::Class,
206 latest::lsp::SymbolKind::Method => Self::Method,
207 latest::lsp::SymbolKind::Property => Self::Property,
208 latest::lsp::SymbolKind::Field => Self::Field,
209 latest::lsp::SymbolKind::Constructor => Self::Constructor,
210 latest::lsp::SymbolKind::Enum => Self::Enum,
211 latest::lsp::SymbolKind::Interface => Self::Interface,
212 latest::lsp::SymbolKind::Function => Self::Function,
213 latest::lsp::SymbolKind::Variable => Self::Variable,
214 latest::lsp::SymbolKind::Constant => Self::Constant,
215 latest::lsp::SymbolKind::String => Self::String,
216 latest::lsp::SymbolKind::Number => Self::Number,
217 latest::lsp::SymbolKind::Boolean => Self::Boolean,
218 latest::lsp::SymbolKind::Array => Self::Array,
219 latest::lsp::SymbolKind::Object => Self::Object,
220 latest::lsp::SymbolKind::Key => Self::Key,
221 latest::lsp::SymbolKind::Null => Self::Null,
222 latest::lsp::SymbolKind::EnumMember => Self::EnumMember,
223 latest::lsp::SymbolKind::Struct => Self::Struct,
224 latest::lsp::SymbolKind::Event => Self::Event,
225 latest::lsp::SymbolKind::Operator => Self::Operator,
226 latest::lsp::SymbolKind::TypeParameter => Self::TypeParameter,
227 latest::lsp::SymbolKind::Other(kind) => Self::Other(kind),
228 }
229 }
230}
231
232#[async_trait]
233impl HostKeyValueStore for WasmState {
234 async fn insert(
235 &mut self,
236 kv_store: Resource<ExtensionKeyValueStore>,
237 key: String,
238 value: String,
239 ) -> wasmtime::Result<Result<(), String>> {
240 let kv_store = self.table.get(&kv_store)?;
241 kv_store.insert(key, value).await.to_wasmtime_result()
242 }
243
244 fn drop(&mut self, _worktree: Resource<ExtensionKeyValueStore>) -> Result<()> {
245 // We only ever hand out borrows of key-value stores.
246 Ok(())
247 }
248}
249
250#[async_trait]
251impl HostWorktree for WasmState {
252 async fn id(&mut self, delegate: Resource<Arc<dyn WorktreeDelegate>>) -> wasmtime::Result<u64> {
253 latest::HostWorktree::id(self, delegate).await
254 }
255
256 async fn root_path(
257 &mut self,
258 delegate: Resource<Arc<dyn WorktreeDelegate>>,
259 ) -> wasmtime::Result<String> {
260 latest::HostWorktree::root_path(self, delegate).await
261 }
262
263 async fn read_text_file(
264 &mut self,
265 delegate: Resource<Arc<dyn WorktreeDelegate>>,
266 path: String,
267 ) -> wasmtime::Result<Result<String, String>> {
268 latest::HostWorktree::read_text_file(self, delegate, path).await
269 }
270
271 async fn shell_env(
272 &mut self,
273 delegate: Resource<Arc<dyn WorktreeDelegate>>,
274 ) -> wasmtime::Result<EnvVars> {
275 latest::HostWorktree::shell_env(self, delegate).await
276 }
277
278 async fn which(
279 &mut self,
280 delegate: Resource<Arc<dyn WorktreeDelegate>>,
281 binary_name: String,
282 ) -> wasmtime::Result<Option<String>> {
283 latest::HostWorktree::which(self, delegate, binary_name).await
284 }
285
286 fn drop(&mut self, _worktree: Resource<Worktree>) -> Result<()> {
287 // We only ever hand out borrows of worktrees.
288 Ok(())
289 }
290}
291
292#[async_trait]
293impl common::Host for WasmState {}
294
295#[async_trait]
296impl http_client::Host for WasmState {
297 async fn fetch(
298 &mut self,
299 request: http_client::HttpRequest,
300 ) -> wasmtime::Result<Result<http_client::HttpResponse, String>> {
301 maybe!(async {
302 let url = &request.url;
303 let request = convert_request(&request)?;
304 let mut response = self.host.http_client.send(request).await?;
305
306 if response.status().is_client_error() || response.status().is_server_error() {
307 bail!("failed to fetch '{url}': status code {}", response.status())
308 }
309 convert_response(&mut response).await
310 })
311 .await
312 .to_wasmtime_result()
313 }
314
315 async fn fetch_stream(
316 &mut self,
317 request: http_client::HttpRequest,
318 ) -> wasmtime::Result<Result<Resource<ExtensionHttpResponseStream>, String>> {
319 let request = convert_request(&request)?;
320 let response = self.host.http_client.send(request);
321 maybe!(async {
322 let response = response.await?;
323 let stream = Arc::new(Mutex::new(response));
324 let resource = self.table.push(stream)?;
325 Ok(resource)
326 })
327 .await
328 .to_wasmtime_result()
329 }
330}
331
332#[async_trait]
333impl http_client::HostHttpResponseStream for WasmState {
334 async fn next_chunk(
335 &mut self,
336 resource: Resource<ExtensionHttpResponseStream>,
337 ) -> wasmtime::Result<Result<Option<Vec<u8>>, String>> {
338 let stream = self.table.get(&resource)?.clone();
339 maybe!(async move {
340 let mut response = stream.lock().await;
341 let mut buffer = vec![0; 8192]; // 8KB buffer
342 let bytes_read = response.body_mut().read(&mut buffer).await?;
343 if bytes_read == 0 {
344 Ok(None)
345 } else {
346 buffer.truncate(bytes_read);
347 Ok(Some(buffer))
348 }
349 })
350 .await
351 .to_wasmtime_result()
352 }
353
354 fn drop(&mut self, _resource: Resource<ExtensionHttpResponseStream>) -> Result<()> {
355 Ok(())
356 }
357}
358
359impl From<http_client::HttpMethod> for ::http_client::Method {
360 fn from(value: http_client::HttpMethod) -> Self {
361 match value {
362 http_client::HttpMethod::Get => Self::GET,
363 http_client::HttpMethod::Post => Self::POST,
364 http_client::HttpMethod::Put => Self::PUT,
365 http_client::HttpMethod::Delete => Self::DELETE,
366 http_client::HttpMethod::Head => Self::HEAD,
367 http_client::HttpMethod::Options => Self::OPTIONS,
368 http_client::HttpMethod::Patch => Self::PATCH,
369 }
370 }
371}
372
373fn convert_request(
374 extension_request: &http_client::HttpRequest,
375) -> Result<::http_client::Request<AsyncBody>, anyhow::Error> {
376 let mut request = ::http_client::Request::builder()
377 .method(::http_client::Method::from(extension_request.method))
378 .uri(&extension_request.url)
379 .follow_redirects(match extension_request.redirect_policy {
380 http_client::RedirectPolicy::NoFollow => ::http_client::RedirectPolicy::NoFollow,
381 http_client::RedirectPolicy::FollowLimit(limit) => {
382 ::http_client::RedirectPolicy::FollowLimit(limit)
383 }
384 http_client::RedirectPolicy::FollowAll => ::http_client::RedirectPolicy::FollowAll,
385 });
386 for (key, value) in &extension_request.headers {
387 request = request.header(key, value);
388 }
389 let body = extension_request
390 .body
391 .clone()
392 .map(AsyncBody::from)
393 .unwrap_or_default();
394 request.body(body).map_err(anyhow::Error::from)
395}
396
397async fn convert_response(
398 response: &mut ::http_client::Response<AsyncBody>,
399) -> Result<http_client::HttpResponse, anyhow::Error> {
400 let mut extension_response = http_client::HttpResponse {
401 body: Vec::new(),
402 headers: Vec::new(),
403 };
404
405 for (key, value) in response.headers() {
406 extension_response
407 .headers
408 .push((key.to_string(), value.to_str().unwrap_or("").to_string()));
409 }
410
411 response
412 .body_mut()
413 .read_to_end(&mut extension_response.body)
414 .await?;
415
416 Ok(extension_response)
417}
418
419#[async_trait]
420impl lsp::Host for WasmState {}
421
422#[async_trait]
423impl ExtensionImports for WasmState {
424 async fn get_settings(
425 &mut self,
426 location: Option<self::SettingsLocation>,
427 category: String,
428 key: Option<String>,
429 ) -> wasmtime::Result<Result<String, String>> {
430 self.on_main_thread(|cx| {
431 async move {
432 let location = location
433 .as_ref()
434 .map(|location| ::settings::SettingsLocation {
435 worktree_id: WorktreeId::from_proto(location.worktree_id),
436 path: Path::new(&location.path),
437 });
438
439 cx.update(|cx| match category.as_str() {
440 "language" => {
441 let key = key.map(|k| LanguageName::new(&k));
442 let settings = AllLanguageSettings::get(location, cx).language(
443 location,
444 key.as_ref(),
445 cx,
446 );
447 Ok(serde_json::to_string(&settings::LanguageSettings {
448 tab_size: settings.tab_size,
449 })?)
450 }
451 "lsp" => {
452 let settings = key
453 .and_then(|key| {
454 ProjectSettings::get(location, cx)
455 .lsp
456 .get(&::lsp::LanguageServerName(key.into()))
457 })
458 .cloned()
459 .unwrap_or_default();
460 Ok(serde_json::to_string(&settings::LspSettings {
461 binary: settings.binary.map(|binary| settings::BinarySettings {
462 path: binary.path,
463 arguments: binary.arguments,
464 }),
465 settings: settings.settings,
466 initialization_options: settings.initialization_options,
467 })?)
468 }
469 _ => {
470 bail!("Unknown settings category: {}", category);
471 }
472 })
473 }
474 .boxed_local()
475 })
476 .await?
477 .to_wasmtime_result()
478 }
479
480 async fn set_language_server_installation_status(
481 &mut self,
482 server_name: String,
483 status: LanguageServerInstallationStatus,
484 ) -> wasmtime::Result<()> {
485 let status = match status {
486 LanguageServerInstallationStatus::CheckingForUpdate => {
487 LanguageServerBinaryStatus::CheckingForUpdate
488 }
489 LanguageServerInstallationStatus::Downloading => {
490 LanguageServerBinaryStatus::Downloading
491 }
492 LanguageServerInstallationStatus::None => LanguageServerBinaryStatus::None,
493 LanguageServerInstallationStatus::Failed(error) => {
494 LanguageServerBinaryStatus::Failed { error }
495 }
496 };
497
498 self.host
499 .registration_hooks
500 .update_lsp_status(::lsp::LanguageServerName(server_name.into()), status);
501 Ok(())
502 }
503
504 async fn download_file(
505 &mut self,
506 url: String,
507 path: String,
508 file_type: DownloadedFileType,
509 ) -> wasmtime::Result<Result<(), String>> {
510 maybe!(async {
511 let path = PathBuf::from(path);
512 let extension_work_dir = self.host.work_dir.join(self.manifest.id.as_ref());
513
514 self.host.fs.create_dir(&extension_work_dir).await?;
515
516 let destination_path = self
517 .host
518 .writeable_path_from_extension(&self.manifest.id, &path)?;
519
520 let mut response = self
521 .host
522 .http_client
523 .get(&url, Default::default(), true)
524 .await
525 .map_err(|err| anyhow!("error downloading release: {}", err))?;
526
527 if !response.status().is_success() {
528 Err(anyhow!(
529 "download failed with status {}",
530 response.status().to_string()
531 ))?;
532 }
533 let body = BufReader::new(response.body_mut());
534
535 match file_type {
536 DownloadedFileType::Uncompressed => {
537 futures::pin_mut!(body);
538 self.host
539 .fs
540 .create_file_with(&destination_path, body)
541 .await?;
542 }
543 DownloadedFileType::Gzip => {
544 let body = GzipDecoder::new(body);
545 futures::pin_mut!(body);
546 self.host
547 .fs
548 .create_file_with(&destination_path, body)
549 .await?;
550 }
551 DownloadedFileType::GzipTar => {
552 let body = GzipDecoder::new(body);
553 futures::pin_mut!(body);
554 self.host
555 .fs
556 .extract_tar_file(&destination_path, Archive::new(body))
557 .await?;
558 }
559 DownloadedFileType::Zip => {
560 futures::pin_mut!(body);
561 node_runtime::extract_zip(&destination_path, body)
562 .await
563 .with_context(|| format!("failed to unzip {} archive", path.display()))?;
564 }
565 }
566
567 Ok(())
568 })
569 .await
570 .to_wasmtime_result()
571 }
572
573 async fn make_file_executable(&mut self, path: String) -> wasmtime::Result<Result<(), String>> {
574 #[allow(unused)]
575 let path = self
576 .host
577 .writeable_path_from_extension(&self.manifest.id, Path::new(&path))?;
578
579 #[cfg(unix)]
580 {
581 use std::fs::{self, Permissions};
582 use std::os::unix::fs::PermissionsExt;
583
584 return fs::set_permissions(&path, Permissions::from_mode(0o755))
585 .map_err(|error| anyhow!("failed to set permissions for path {path:?}: {error}"))
586 .to_wasmtime_result();
587 }
588
589 #[cfg(not(unix))]
590 Ok(Ok(()))
591 }
592}