1use anyhow::{Context as _, Result};
2use async_trait::async_trait;
3use collections::HashMap;
4use futures::StreamExt;
5use futures::lock::OwnedMutexGuard;
6use gpui::{App, AppContext, AsyncApp, Entity, SharedString, Task};
7use http_client::github::AssetKind;
8use http_client::github::{GitHubLspBinaryVersion, latest_github_release};
9use http_client::github_download::{GithubBinaryMetadata, download_server_binary};
10pub use language::*;
11use lsp::{InitializeParams, LanguageServerBinary, LanguageServerBinaryOptions};
12use project::lsp_store::rust_analyzer_ext::CARGO_DIAGNOSTICS_SOURCE_NAME;
13use project::project_settings::ProjectSettings;
14use regex::Regex;
15use serde_json::json;
16use settings::Settings as _;
17use smallvec::SmallVec;
18use smol::fs::{self};
19use std::cmp::Reverse;
20use std::fmt::Display;
21use std::ops::Range;
22use std::process::Stdio;
23use std::{
24 borrow::Cow,
25 path::{Path, PathBuf},
26 sync::{Arc, LazyLock},
27};
28use task::{TaskTemplate, TaskTemplates, TaskVariables, VariableName};
29use util::fs::{make_file_executable, remove_matching};
30use util::merge_json_value_into;
31use util::rel_path::RelPath;
32use util::{ResultExt, maybe};
33
34use crate::language_settings::LanguageSettings;
35
36pub struct RustLspAdapter;
37
38#[cfg(target_os = "macos")]
39impl RustLspAdapter {
40 const GITHUB_ASSET_KIND: AssetKind = AssetKind::Gz;
41 const ARCH_SERVER_NAME: &str = "apple-darwin";
42}
43
44#[cfg(target_os = "linux")]
45impl RustLspAdapter {
46 const GITHUB_ASSET_KIND: AssetKind = AssetKind::Gz;
47 const ARCH_SERVER_NAME: &str = "unknown-linux";
48}
49
50#[cfg(target_os = "freebsd")]
51impl RustLspAdapter {
52 const GITHUB_ASSET_KIND: AssetKind = AssetKind::Gz;
53 const ARCH_SERVER_NAME: &str = "unknown-freebsd";
54}
55
56#[cfg(target_os = "windows")]
57impl RustLspAdapter {
58 const GITHUB_ASSET_KIND: AssetKind = AssetKind::Zip;
59 const ARCH_SERVER_NAME: &str = "pc-windows-msvc";
60}
61
62const SERVER_NAME: LanguageServerName = LanguageServerName::new_static("rust-analyzer");
63
64#[cfg(target_os = "linux")]
65enum LibcType {
66 Gnu,
67 Musl,
68}
69
70impl RustLspAdapter {
71 fn convert_rust_analyzer_schema(raw_schema: &serde_json::Value) -> serde_json::Value {
72 let Some(schema_array) = raw_schema.as_array() else {
73 return raw_schema.clone();
74 };
75
76 let mut root_properties = serde_json::Map::new();
77
78 for item in schema_array {
79 if let Some(props) = item.get("properties").and_then(|p| p.as_object()) {
80 for (key, value) in props {
81 let parts: Vec<&str> = key.split('.').collect();
82
83 if parts.is_empty() {
84 continue;
85 }
86
87 let parts_to_process = if parts.first() == Some(&"rust-analyzer") {
88 &parts[1..]
89 } else {
90 &parts[..]
91 };
92
93 if parts_to_process.is_empty() {
94 continue;
95 }
96
97 let mut current = &mut root_properties;
98
99 for (i, part) in parts_to_process.iter().enumerate() {
100 let is_last = i == parts_to_process.len() - 1;
101
102 if is_last {
103 current.insert(part.to_string(), value.clone());
104 } else {
105 let next_current = current
106 .entry(part.to_string())
107 .or_insert_with(|| {
108 serde_json::json!({
109 "type": "object",
110 "properties": {}
111 })
112 })
113 .as_object_mut()
114 .expect("should be an object")
115 .entry("properties")
116 .or_insert_with(|| serde_json::json!({}))
117 .as_object_mut()
118 .expect("properties should be an object");
119
120 current = next_current;
121 }
122 }
123 }
124 }
125 }
126
127 serde_json::json!({
128 "type": "object",
129 "properties": root_properties
130 })
131 }
132
133 #[cfg(target_os = "linux")]
134 async fn determine_libc_type() -> LibcType {
135 use futures::pin_mut;
136
137 async fn from_ldd_version() -> Option<LibcType> {
138 use util::command::new_smol_command;
139
140 let ldd_output = new_smol_command("ldd")
141 .arg("--version")
142 .output()
143 .await
144 .ok()?;
145 let ldd_version = String::from_utf8_lossy(&ldd_output.stdout);
146
147 if ldd_version.contains("GNU libc") || ldd_version.contains("GLIBC") {
148 Some(LibcType::Gnu)
149 } else if ldd_version.contains("musl") {
150 Some(LibcType::Musl)
151 } else {
152 None
153 }
154 }
155
156 if let Some(libc_type) = from_ldd_version().await {
157 return libc_type;
158 }
159
160 let Ok(dir_entries) = smol::fs::read_dir("/lib").await else {
161 // defaulting to gnu because nix doesn't have /lib files due to not following FHS
162 return LibcType::Gnu;
163 };
164 let dir_entries = dir_entries.filter_map(async move |e| e.ok());
165 pin_mut!(dir_entries);
166
167 let mut has_musl = false;
168 let mut has_gnu = false;
169
170 while let Some(entry) = dir_entries.next().await {
171 let file_name = entry.file_name();
172 let file_name = file_name.to_string_lossy();
173 if file_name.starts_with("ld-musl-") {
174 has_musl = true;
175 } else if file_name.starts_with("ld-linux-") {
176 has_gnu = true;
177 }
178 }
179
180 match (has_musl, has_gnu) {
181 (true, _) => LibcType::Musl,
182 (_, true) => LibcType::Gnu,
183 _ => LibcType::Gnu,
184 }
185 }
186
187 #[cfg(target_os = "linux")]
188 async fn build_arch_server_name_linux() -> String {
189 let libc = match Self::determine_libc_type().await {
190 LibcType::Musl => "musl",
191 LibcType::Gnu => "gnu",
192 };
193
194 format!("{}-{}", Self::ARCH_SERVER_NAME, libc)
195 }
196
197 async fn build_asset_name() -> String {
198 let extension = match Self::GITHUB_ASSET_KIND {
199 AssetKind::TarGz => "tar.gz",
200 AssetKind::Gz => "gz",
201 AssetKind::Zip => "zip",
202 };
203
204 #[cfg(target_os = "linux")]
205 let arch_server_name = Self::build_arch_server_name_linux().await;
206 #[cfg(not(target_os = "linux"))]
207 let arch_server_name = Self::ARCH_SERVER_NAME.to_string();
208
209 format!(
210 "{}-{}-{}.{}",
211 SERVER_NAME,
212 std::env::consts::ARCH,
213 &arch_server_name,
214 extension
215 )
216 }
217}
218
219pub(crate) struct CargoManifestProvider;
220
221impl ManifestProvider for CargoManifestProvider {
222 fn name(&self) -> ManifestName {
223 SharedString::new_static("Cargo.toml").into()
224 }
225
226 fn search(
227 &self,
228 ManifestQuery {
229 path,
230 depth,
231 delegate,
232 }: ManifestQuery,
233 ) -> Option<Arc<RelPath>> {
234 let mut outermost_cargo_toml = None;
235 for path in path.ancestors().take(depth) {
236 let p = path.join(RelPath::unix("Cargo.toml").unwrap());
237 if delegate.exists(&p, Some(false)) {
238 outermost_cargo_toml = Some(Arc::from(path));
239 }
240 }
241
242 outermost_cargo_toml
243 }
244}
245
246#[async_trait(?Send)]
247impl LspAdapter for RustLspAdapter {
248 fn name(&self) -> LanguageServerName {
249 SERVER_NAME
250 }
251
252 fn disk_based_diagnostic_sources(&self) -> Vec<String> {
253 vec![CARGO_DIAGNOSTICS_SOURCE_NAME.to_owned()]
254 }
255
256 fn disk_based_diagnostics_progress_token(&self) -> Option<String> {
257 Some("rust-analyzer/flycheck".into())
258 }
259
260 fn process_diagnostics(
261 &self,
262 params: &mut lsp::PublishDiagnosticsParams,
263 _: LanguageServerId,
264 _: Option<&'_ Buffer>,
265 ) {
266 static REGEX: LazyLock<Regex> =
267 LazyLock::new(|| Regex::new(r"(?m)`([^`]+)\n`$").expect("Failed to create REGEX"));
268
269 for diagnostic in &mut params.diagnostics {
270 for message in diagnostic
271 .related_information
272 .iter_mut()
273 .flatten()
274 .map(|info| &mut info.message)
275 .chain([&mut diagnostic.message])
276 {
277 if let Cow::Owned(sanitized) = REGEX.replace_all(message, "`$1`") {
278 *message = sanitized;
279 }
280 }
281 }
282 }
283
284 fn diagnostic_message_to_markdown(&self, message: &str) -> Option<String> {
285 static REGEX: LazyLock<Regex> =
286 LazyLock::new(|| Regex::new(r"(?m)\n *").expect("Failed to create REGEX"));
287 Some(REGEX.replace_all(message, "\n\n").to_string())
288 }
289
290 async fn label_for_completion(
291 &self,
292 completion: &lsp::CompletionItem,
293 language: &Arc<Language>,
294 ) -> Option<CodeLabel> {
295 // rust-analyzer calls these detail left and detail right in terms of where it expects things to be rendered
296 // this usually contains signatures of the thing to be completed
297 let detail_right = completion
298 .label_details
299 .as_ref()
300 .and_then(|detail| detail.description.as_ref())
301 .or(completion.detail.as_ref())
302 .map(|detail| detail.trim());
303 // this tends to contain alias and import information
304 let mut detail_left = completion
305 .label_details
306 .as_ref()
307 .and_then(|detail| detail.detail.as_deref());
308 let mk_label = |text: String, filter_range: &dyn Fn() -> Range<usize>, runs| {
309 let filter_range = completion
310 .filter_text
311 .as_deref()
312 .and_then(|filter| text.find(filter).map(|ix| ix..ix + filter.len()))
313 .or_else(|| {
314 text.find(&completion.label)
315 .map(|ix| ix..ix + completion.label.len())
316 })
317 .unwrap_or_else(filter_range);
318
319 CodeLabel::new(text, filter_range, runs)
320 };
321 let mut label = match (detail_right, completion.kind) {
322 (Some(signature), Some(lsp::CompletionItemKind::FIELD)) => {
323 let name = &completion.label;
324 let text = format!("{name}: {signature}");
325 let prefix = "struct S { ";
326 let source = Rope::from_iter([prefix, &text, " }"]);
327 let runs =
328 language.highlight_text(&source, prefix.len()..prefix.len() + text.len());
329 mk_label(text, &|| 0..completion.label.len(), runs)
330 }
331 (
332 Some(signature),
333 Some(lsp::CompletionItemKind::CONSTANT | lsp::CompletionItemKind::VARIABLE),
334 ) if completion.insert_text_format != Some(lsp::InsertTextFormat::SNIPPET) => {
335 let name = &completion.label;
336 let text = format!("{name}: {signature}",);
337 let prefix = "let ";
338 let source = Rope::from_iter([prefix, &text, " = ();"]);
339 let runs =
340 language.highlight_text(&source, prefix.len()..prefix.len() + text.len());
341 mk_label(text, &|| 0..completion.label.len(), runs)
342 }
343 (
344 function_signature,
345 Some(lsp::CompletionItemKind::FUNCTION | lsp::CompletionItemKind::METHOD),
346 ) => {
347 const FUNCTION_PREFIXES: [&str; 6] = [
348 "async fn",
349 "async unsafe fn",
350 "const fn",
351 "const unsafe fn",
352 "unsafe fn",
353 "fn",
354 ];
355 let fn_prefixed = FUNCTION_PREFIXES.iter().find_map(|&prefix| {
356 function_signature?
357 .strip_prefix(prefix)
358 .map(|suffix| (prefix, suffix))
359 });
360 let label = if let Some(label) = completion
361 .label
362 .strip_suffix("(…)")
363 .or_else(|| completion.label.strip_suffix("()"))
364 {
365 label
366 } else {
367 &completion.label
368 };
369
370 static FULL_SIGNATURE_REGEX: LazyLock<Regex> =
371 LazyLock::new(|| Regex::new(r"fn (.?+)\(").expect("Failed to create REGEX"));
372 if let Some((function_signature, match_)) = function_signature
373 .filter(|it| it.contains(&label))
374 .and_then(|it| Some((it, FULL_SIGNATURE_REGEX.find(it)?)))
375 {
376 let source = Rope::from(function_signature);
377 let runs = language.highlight_text(&source, 0..function_signature.len());
378 mk_label(
379 function_signature.to_owned(),
380 &|| match_.range().start - 3..match_.range().end - 1,
381 runs,
382 )
383 } else if let Some((prefix, suffix)) = fn_prefixed {
384 let text = format!("{label}{suffix}");
385 let source = Rope::from_iter([prefix, " ", &text, " {}"]);
386 let run_start = prefix.len() + 1;
387 let runs = language.highlight_text(&source, run_start..run_start + text.len());
388 mk_label(text, &|| 0..label.len(), runs)
389 } else if completion
390 .detail
391 .as_ref()
392 .is_some_and(|detail| detail.starts_with("macro_rules! "))
393 {
394 let text = completion.label.clone();
395 let len = text.len();
396 let source = Rope::from(text.as_str());
397 let runs = language.highlight_text(&source, 0..len);
398 mk_label(text, &|| 0..completion.label.len(), runs)
399 } else if detail_left.is_none() {
400 return None;
401 } else {
402 mk_label(
403 completion.label.clone(),
404 &|| 0..completion.label.len(),
405 vec![],
406 )
407 }
408 }
409 (_, kind) => {
410 let mut label;
411 let mut runs = vec![];
412
413 if completion.insert_text_format == Some(lsp::InsertTextFormat::SNIPPET)
414 && let Some(
415 lsp::CompletionTextEdit::InsertAndReplace(lsp::InsertReplaceEdit {
416 new_text,
417 ..
418 })
419 | lsp::CompletionTextEdit::Edit(lsp::TextEdit { new_text, .. }),
420 ) = completion.text_edit.as_ref()
421 && let Ok(mut snippet) = snippet::Snippet::parse(new_text)
422 && snippet.tabstops.len() > 1
423 {
424 label = String::new();
425
426 // we never display the final tabstop
427 snippet.tabstops.remove(snippet.tabstops.len() - 1);
428
429 let mut text_pos = 0;
430
431 let mut all_stop_ranges = snippet
432 .tabstops
433 .into_iter()
434 .flat_map(|stop| stop.ranges)
435 .collect::<SmallVec<[_; 8]>>();
436 all_stop_ranges.sort_unstable_by_key(|a| (a.start, Reverse(a.end)));
437
438 for range in &all_stop_ranges {
439 let start_pos = range.start as usize;
440 let end_pos = range.end as usize;
441
442 label.push_str(&snippet.text[text_pos..start_pos]);
443
444 if start_pos == end_pos {
445 let caret_start = label.len();
446 label.push('…');
447 runs.push((caret_start..label.len(), HighlightId::TABSTOP_INSERT_ID));
448 } else {
449 let label_start = label.len();
450 label.push_str(&snippet.text[start_pos..end_pos]);
451 let label_end = label.len();
452 runs.push((label_start..label_end, HighlightId::TABSTOP_REPLACE_ID));
453 }
454
455 text_pos = end_pos;
456 }
457
458 label.push_str(&snippet.text[text_pos..]);
459
460 if detail_left.is_some_and(|detail_left| detail_left == new_text) {
461 // We only include the left detail if it isn't the snippet again
462 detail_left.take();
463 }
464
465 runs.extend(language.highlight_text(&Rope::from(&label), 0..label.len()));
466 } else {
467 let highlight_name = kind.and_then(|kind| match kind {
468 lsp::CompletionItemKind::STRUCT
469 | lsp::CompletionItemKind::INTERFACE
470 | lsp::CompletionItemKind::ENUM => Some("type"),
471 lsp::CompletionItemKind::ENUM_MEMBER => Some("variant"),
472 lsp::CompletionItemKind::KEYWORD => Some("keyword"),
473 lsp::CompletionItemKind::VALUE | lsp::CompletionItemKind::CONSTANT => {
474 Some("constant")
475 }
476 _ => None,
477 });
478
479 label = completion.label.clone();
480
481 if let Some(highlight_name) = highlight_name {
482 let highlight_id =
483 language.grammar()?.highlight_id_for_name(highlight_name)?;
484 runs.push((
485 0..label.rfind('(').unwrap_or(completion.label.len()),
486 highlight_id,
487 ));
488 } else if detail_left.is_none()
489 && kind != Some(lsp::CompletionItemKind::SNIPPET)
490 {
491 return None;
492 }
493 }
494
495 let label_len = label.len();
496
497 mk_label(label, &|| 0..label_len, runs)
498 }
499 };
500
501 if let Some(detail_left) = detail_left {
502 label.text.push(' ');
503 if !detail_left.starts_with('(') {
504 label.text.push('(');
505 }
506 label.text.push_str(detail_left);
507 if !detail_left.ends_with(')') {
508 label.text.push(')');
509 }
510 }
511
512 Some(label)
513 }
514
515 async fn initialization_options_schema(
516 self: Arc<Self>,
517 delegate: &Arc<dyn LspAdapterDelegate>,
518 cached_binary: OwnedMutexGuard<Option<(bool, LanguageServerBinary)>>,
519 cx: &mut AsyncApp,
520 ) -> Option<serde_json::Value> {
521 let binary = self
522 .get_language_server_command(
523 delegate.clone(),
524 None,
525 LanguageServerBinaryOptions {
526 allow_path_lookup: true,
527 allow_binary_download: false,
528 pre_release: false,
529 },
530 cached_binary,
531 cx.clone(),
532 )
533 .await
534 .0
535 .ok()?;
536
537 let mut command = util::command::new_smol_command(&binary.path);
538 command
539 .arg("--print-config-schema")
540 .stdout(Stdio::piped())
541 .stderr(Stdio::piped());
542 let cmd = command
543 .spawn()
544 .map_err(|e| log::debug!("failed to spawn command {command:?}: {e}"))
545 .ok()?;
546 let output = cmd
547 .output()
548 .await
549 .map_err(|e| log::debug!("failed to execute command {command:?}: {e}"))
550 .ok()?;
551 if !output.status.success() {
552 return None;
553 }
554
555 let raw_schema: serde_json::Value = serde_json::from_slice(output.stdout.as_slice())
556 .map_err(|e| log::debug!("failed to parse rust-analyzer's JSON schema output: {e}"))
557 .ok()?;
558
559 // Convert rust-analyzer's array-based schema format to nested JSON Schema
560 let converted_schema = Self::convert_rust_analyzer_schema(&raw_schema);
561 Some(converted_schema)
562 }
563
564 async fn label_for_symbol(
565 &self,
566 name: &str,
567 kind: lsp::SymbolKind,
568 language: &Arc<Language>,
569 ) -> Option<CodeLabel> {
570 let (prefix, suffix) = match kind {
571 lsp::SymbolKind::METHOD | lsp::SymbolKind::FUNCTION => ("fn ", "();"),
572 lsp::SymbolKind::STRUCT => ("struct ", ";"),
573 lsp::SymbolKind::ENUM => ("enum ", "{}"),
574 lsp::SymbolKind::INTERFACE => ("trait ", "{}"),
575 lsp::SymbolKind::CONSTANT => ("const ", ":()=();"),
576 lsp::SymbolKind::MODULE => ("mod ", ";"),
577 lsp::SymbolKind::PACKAGE => ("extern crate ", ";"),
578 lsp::SymbolKind::TYPE_PARAMETER => ("type ", "=();"),
579 lsp::SymbolKind::ENUM_MEMBER => {
580 let prefix = "enum E {";
581 return Some(CodeLabel::new(
582 name.to_string(),
583 0..name.len(),
584 language.highlight_text(
585 &Rope::from_iter([prefix, name, "}"]),
586 prefix.len()..prefix.len() + name.len(),
587 ),
588 ));
589 }
590 _ => return None,
591 };
592
593 let filter_range = prefix.len()..prefix.len() + name.len();
594 let display_range = 0..filter_range.end;
595 Some(CodeLabel::new(
596 format!("{prefix}{name}"),
597 filter_range,
598 language.highlight_text(&Rope::from_iter([prefix, name, suffix]), display_range),
599 ))
600 }
601
602 fn prepare_initialize_params(
603 &self,
604 mut original: InitializeParams,
605 cx: &App,
606 ) -> Result<InitializeParams> {
607 let enable_lsp_tasks = ProjectSettings::get_global(cx)
608 .lsp
609 .get(&SERVER_NAME)
610 .is_some_and(|s| s.enable_lsp_tasks);
611 if enable_lsp_tasks {
612 let experimental = json!({
613 "runnables": {
614 "kinds": [ "cargo", "shell" ],
615 },
616 });
617 if let Some(original_experimental) = &mut original.capabilities.experimental {
618 merge_json_value_into(experimental, original_experimental);
619 } else {
620 original.capabilities.experimental = Some(experimental);
621 }
622 }
623
624 Ok(original)
625 }
626}
627
628impl LspInstaller for RustLspAdapter {
629 type BinaryVersion = GitHubLspBinaryVersion;
630 async fn check_if_user_installed(
631 &self,
632 delegate: &dyn LspAdapterDelegate,
633 _: Option<Toolchain>,
634 _: &AsyncApp,
635 ) -> Option<LanguageServerBinary> {
636 let path = delegate.which("rust-analyzer".as_ref()).await?;
637 let env = delegate.shell_env().await;
638
639 // It is surprisingly common for ~/.cargo/bin/rust-analyzer to be a symlink to
640 // /usr/bin/rust-analyzer that fails when you run it; so we need to test it.
641 log::debug!("found rust-analyzer in PATH. trying to run `rust-analyzer --help`");
642 let result = delegate
643 .try_exec(LanguageServerBinary {
644 path: path.clone(),
645 arguments: vec!["--help".into()],
646 env: Some(env.clone()),
647 })
648 .await;
649 if let Err(err) = result {
650 log::debug!(
651 "failed to run rust-analyzer after detecting it in PATH: binary: {:?}: {}",
652 path,
653 err
654 );
655 return None;
656 }
657
658 Some(LanguageServerBinary {
659 path,
660 env: Some(env),
661 arguments: vec![],
662 })
663 }
664
665 async fn fetch_latest_server_version(
666 &self,
667 delegate: &dyn LspAdapterDelegate,
668 pre_release: bool,
669 _: &mut AsyncApp,
670 ) -> Result<GitHubLspBinaryVersion> {
671 let release = latest_github_release(
672 "rust-lang/rust-analyzer",
673 true,
674 pre_release,
675 delegate.http_client(),
676 )
677 .await?;
678 let asset_name = Self::build_asset_name().await;
679 let asset = release
680 .assets
681 .into_iter()
682 .find(|asset| asset.name == asset_name)
683 .with_context(|| format!("no asset found matching `{asset_name:?}`"))?;
684 Ok(GitHubLspBinaryVersion {
685 name: release.tag_name,
686 url: asset.browser_download_url,
687 digest: asset.digest,
688 })
689 }
690
691 async fn fetch_server_binary(
692 &self,
693 version: GitHubLspBinaryVersion,
694 container_dir: PathBuf,
695 delegate: &dyn LspAdapterDelegate,
696 ) -> Result<LanguageServerBinary> {
697 let GitHubLspBinaryVersion {
698 name,
699 url,
700 digest: expected_digest,
701 } = version;
702 let destination_path = container_dir.join(format!("rust-analyzer-{name}"));
703 let server_path = match Self::GITHUB_ASSET_KIND {
704 AssetKind::TarGz | AssetKind::Gz => destination_path.clone(), // Tar and gzip extract in place.
705 AssetKind::Zip => destination_path.clone().join("rust-analyzer.exe"), // zip contains a .exe
706 };
707
708 let binary = LanguageServerBinary {
709 path: server_path.clone(),
710 env: None,
711 arguments: Default::default(),
712 };
713
714 let metadata_path = destination_path.with_extension("metadata");
715 let metadata = GithubBinaryMetadata::read_from_file(&metadata_path)
716 .await
717 .ok();
718 if let Some(metadata) = metadata {
719 let validity_check = async || {
720 delegate
721 .try_exec(LanguageServerBinary {
722 path: server_path.clone(),
723 arguments: vec!["--version".into()],
724 env: None,
725 })
726 .await
727 .inspect_err(|err| {
728 log::warn!("Unable to run {server_path:?} asset, redownloading: {err:#}",)
729 })
730 };
731 if let (Some(actual_digest), Some(expected_digest)) =
732 (&metadata.digest, &expected_digest)
733 {
734 if actual_digest == expected_digest {
735 if validity_check().await.is_ok() {
736 return Ok(binary);
737 }
738 } else {
739 log::info!(
740 "SHA-256 mismatch for {destination_path:?} asset, downloading new asset. Expected: {expected_digest}, Got: {actual_digest}"
741 );
742 }
743 } else if validity_check().await.is_ok() {
744 return Ok(binary);
745 }
746 }
747
748 download_server_binary(
749 &*delegate.http_client(),
750 &url,
751 expected_digest.as_deref(),
752 &destination_path,
753 Self::GITHUB_ASSET_KIND,
754 )
755 .await?;
756 make_file_executable(&server_path).await?;
757 remove_matching(&container_dir, |path| path != destination_path).await;
758 GithubBinaryMetadata::write_to_file(
759 &GithubBinaryMetadata {
760 metadata_version: 1,
761 digest: expected_digest,
762 },
763 &metadata_path,
764 )
765 .await?;
766
767 Ok(LanguageServerBinary {
768 path: server_path,
769 env: None,
770 arguments: Default::default(),
771 })
772 }
773
774 async fn cached_server_binary(
775 &self,
776 container_dir: PathBuf,
777 _: &dyn LspAdapterDelegate,
778 ) -> Option<LanguageServerBinary> {
779 get_cached_server_binary(container_dir).await
780 }
781}
782
783pub(crate) struct RustContextProvider;
784
785const RUST_PACKAGE_TASK_VARIABLE: VariableName =
786 VariableName::Custom(Cow::Borrowed("RUST_PACKAGE"));
787
788/// The bin name corresponding to the current file in Cargo.toml
789const RUST_BIN_NAME_TASK_VARIABLE: VariableName =
790 VariableName::Custom(Cow::Borrowed("RUST_BIN_NAME"));
791
792/// The bin kind (bin/example) corresponding to the current file in Cargo.toml
793const RUST_BIN_KIND_TASK_VARIABLE: VariableName =
794 VariableName::Custom(Cow::Borrowed("RUST_BIN_KIND"));
795
796/// The flag to list required features for executing a bin, if any
797const RUST_BIN_REQUIRED_FEATURES_FLAG_TASK_VARIABLE: VariableName =
798 VariableName::Custom(Cow::Borrowed("RUST_BIN_REQUIRED_FEATURES_FLAG"));
799
800/// The list of required features for executing a bin, if any
801const RUST_BIN_REQUIRED_FEATURES_TASK_VARIABLE: VariableName =
802 VariableName::Custom(Cow::Borrowed("RUST_BIN_REQUIRED_FEATURES"));
803
804const RUST_TEST_FRAGMENT_TASK_VARIABLE: VariableName =
805 VariableName::Custom(Cow::Borrowed("RUST_TEST_FRAGMENT"));
806
807const RUST_DOC_TEST_NAME_TASK_VARIABLE: VariableName =
808 VariableName::Custom(Cow::Borrowed("RUST_DOC_TEST_NAME"));
809
810const RUST_TEST_NAME_TASK_VARIABLE: VariableName =
811 VariableName::Custom(Cow::Borrowed("RUST_TEST_NAME"));
812
813const RUST_MANIFEST_DIRNAME_TASK_VARIABLE: VariableName =
814 VariableName::Custom(Cow::Borrowed("RUST_MANIFEST_DIRNAME"));
815
816impl ContextProvider for RustContextProvider {
817 fn build_context(
818 &self,
819 task_variables: &TaskVariables,
820 location: ContextLocation<'_>,
821 project_env: Option<HashMap<String, String>>,
822 _: Arc<dyn LanguageToolchainStore>,
823 cx: &mut gpui::App,
824 ) -> Task<Result<TaskVariables>> {
825 let local_abs_path = location
826 .file_location
827 .buffer
828 .read(cx)
829 .file()
830 .and_then(|file| Some(file.as_local()?.abs_path(cx)));
831
832 let mut variables = TaskVariables::default();
833
834 if let (Some(path), Some(stem)) = (&local_abs_path, task_variables.get(&VariableName::Stem))
835 {
836 let fragment = test_fragment(&variables, path, stem);
837 variables.insert(RUST_TEST_FRAGMENT_TASK_VARIABLE, fragment);
838 };
839 if let Some(test_name) =
840 task_variables.get(&VariableName::Custom(Cow::Borrowed("_test_name")))
841 {
842 variables.insert(RUST_TEST_NAME_TASK_VARIABLE, test_name.into());
843 }
844 if let Some(doc_test_name) =
845 task_variables.get(&VariableName::Custom(Cow::Borrowed("_doc_test_name")))
846 {
847 variables.insert(RUST_DOC_TEST_NAME_TASK_VARIABLE, doc_test_name.into());
848 }
849 cx.background_spawn(async move {
850 if let Some(path) = local_abs_path
851 .as_deref()
852 .and_then(|local_abs_path| local_abs_path.parent())
853 && let Some(package_name) =
854 human_readable_package_name(path, project_env.as_ref()).await
855 {
856 variables.insert(RUST_PACKAGE_TASK_VARIABLE.clone(), package_name);
857 }
858 if let Some(path) = local_abs_path.as_ref()
859 && let Some((target, manifest_path)) =
860 target_info_from_abs_path(path, project_env.as_ref()).await
861 {
862 if let Some(target) = target {
863 variables.extend(TaskVariables::from_iter([
864 (RUST_PACKAGE_TASK_VARIABLE.clone(), target.package_name),
865 (RUST_BIN_NAME_TASK_VARIABLE.clone(), target.target_name),
866 (
867 RUST_BIN_KIND_TASK_VARIABLE.clone(),
868 target.target_kind.to_string(),
869 ),
870 ]));
871 if target.required_features.is_empty() {
872 variables.insert(RUST_BIN_REQUIRED_FEATURES_FLAG_TASK_VARIABLE, "".into());
873 variables.insert(RUST_BIN_REQUIRED_FEATURES_TASK_VARIABLE, "".into());
874 } else {
875 variables.insert(
876 RUST_BIN_REQUIRED_FEATURES_FLAG_TASK_VARIABLE.clone(),
877 "--features".to_string(),
878 );
879 variables.insert(
880 RUST_BIN_REQUIRED_FEATURES_TASK_VARIABLE.clone(),
881 target.required_features.join(","),
882 );
883 }
884 }
885 variables.extend(TaskVariables::from_iter([(
886 RUST_MANIFEST_DIRNAME_TASK_VARIABLE.clone(),
887 manifest_path.to_string_lossy().into_owned(),
888 )]));
889 }
890 Ok(variables)
891 })
892 }
893
894 fn associated_tasks(
895 &self,
896 buffer: Option<Entity<Buffer>>,
897 cx: &App,
898 ) -> Task<Option<TaskTemplates>> {
899 const DEFAULT_RUN_NAME_STR: &str = "RUST_DEFAULT_PACKAGE_RUN";
900 const CUSTOM_TARGET_DIR: &str = "RUST_TARGET_DIR";
901
902 let language = LanguageName::new_static("Rust");
903 let settings = LanguageSettings::resolve(buffer.map(|b| b.read(cx)), Some(&language), cx);
904 let package_to_run = settings.tasks.variables.get(DEFAULT_RUN_NAME_STR).cloned();
905 let custom_target_dir = settings.tasks.variables.get(CUSTOM_TARGET_DIR).cloned();
906 let run_task_args = if let Some(package_to_run) = package_to_run {
907 vec!["run".into(), "-p".into(), package_to_run]
908 } else {
909 vec!["run".into()]
910 };
911 let mut task_templates = vec![
912 TaskTemplate {
913 label: format!(
914 "Check (package: {})",
915 RUST_PACKAGE_TASK_VARIABLE.template_value(),
916 ),
917 command: "cargo".into(),
918 args: vec![
919 "check".into(),
920 "-p".into(),
921 RUST_PACKAGE_TASK_VARIABLE.template_value(),
922 ],
923 cwd: Some("$ZED_DIRNAME".to_owned()),
924 ..TaskTemplate::default()
925 },
926 TaskTemplate {
927 label: "Check all targets (workspace)".into(),
928 command: "cargo".into(),
929 args: vec!["check".into(), "--workspace".into(), "--all-targets".into()],
930 cwd: Some("$ZED_DIRNAME".to_owned()),
931 ..TaskTemplate::default()
932 },
933 TaskTemplate {
934 label: format!(
935 "Test '{}' (package: {})",
936 RUST_TEST_NAME_TASK_VARIABLE.template_value(),
937 RUST_PACKAGE_TASK_VARIABLE.template_value(),
938 ),
939 command: "cargo".into(),
940 args: vec![
941 "test".into(),
942 "-p".into(),
943 RUST_PACKAGE_TASK_VARIABLE.template_value(),
944 "--".into(),
945 "--nocapture".into(),
946 "--include-ignored".into(),
947 RUST_TEST_NAME_TASK_VARIABLE.template_value(),
948 ],
949 tags: vec!["rust-test".to_owned()],
950 cwd: Some(RUST_MANIFEST_DIRNAME_TASK_VARIABLE.template_value()),
951 ..TaskTemplate::default()
952 },
953 TaskTemplate {
954 label: format!(
955 "Doc test '{}' (package: {})",
956 RUST_DOC_TEST_NAME_TASK_VARIABLE.template_value(),
957 RUST_PACKAGE_TASK_VARIABLE.template_value(),
958 ),
959 command: "cargo".into(),
960 args: vec![
961 "test".into(),
962 "--doc".into(),
963 "-p".into(),
964 RUST_PACKAGE_TASK_VARIABLE.template_value(),
965 "--".into(),
966 "--nocapture".into(),
967 "--include-ignored".into(),
968 RUST_DOC_TEST_NAME_TASK_VARIABLE.template_value(),
969 ],
970 tags: vec!["rust-doc-test".to_owned()],
971 cwd: Some(RUST_MANIFEST_DIRNAME_TASK_VARIABLE.template_value()),
972 ..TaskTemplate::default()
973 },
974 TaskTemplate {
975 label: format!(
976 "Test mod '{}' (package: {})",
977 VariableName::Stem.template_value(),
978 RUST_PACKAGE_TASK_VARIABLE.template_value(),
979 ),
980 command: "cargo".into(),
981 args: vec![
982 "test".into(),
983 "-p".into(),
984 RUST_PACKAGE_TASK_VARIABLE.template_value(),
985 "--".into(),
986 RUST_TEST_FRAGMENT_TASK_VARIABLE.template_value(),
987 ],
988 tags: vec!["rust-mod-test".to_owned()],
989 cwd: Some(RUST_MANIFEST_DIRNAME_TASK_VARIABLE.template_value()),
990 ..TaskTemplate::default()
991 },
992 TaskTemplate {
993 label: format!(
994 "Run {} {} (package: {})",
995 RUST_BIN_KIND_TASK_VARIABLE.template_value(),
996 RUST_BIN_NAME_TASK_VARIABLE.template_value(),
997 RUST_PACKAGE_TASK_VARIABLE.template_value(),
998 ),
999 command: "cargo".into(),
1000 args: vec![
1001 "run".into(),
1002 "-p".into(),
1003 RUST_PACKAGE_TASK_VARIABLE.template_value(),
1004 format!("--{}", RUST_BIN_KIND_TASK_VARIABLE.template_value()),
1005 RUST_BIN_NAME_TASK_VARIABLE.template_value(),
1006 RUST_BIN_REQUIRED_FEATURES_FLAG_TASK_VARIABLE.template_value(),
1007 RUST_BIN_REQUIRED_FEATURES_TASK_VARIABLE.template_value(),
1008 ],
1009 cwd: Some(RUST_MANIFEST_DIRNAME_TASK_VARIABLE.template_value()),
1010 tags: vec!["rust-main".to_owned()],
1011 ..TaskTemplate::default()
1012 },
1013 TaskTemplate {
1014 label: format!(
1015 "Test (package: {})",
1016 RUST_PACKAGE_TASK_VARIABLE.template_value()
1017 ),
1018 command: "cargo".into(),
1019 args: vec![
1020 "test".into(),
1021 "-p".into(),
1022 RUST_PACKAGE_TASK_VARIABLE.template_value(),
1023 ],
1024 cwd: Some(RUST_MANIFEST_DIRNAME_TASK_VARIABLE.template_value()),
1025 ..TaskTemplate::default()
1026 },
1027 TaskTemplate {
1028 label: "Run".into(),
1029 command: "cargo".into(),
1030 args: run_task_args,
1031 cwd: Some(RUST_MANIFEST_DIRNAME_TASK_VARIABLE.template_value()),
1032 ..TaskTemplate::default()
1033 },
1034 TaskTemplate {
1035 label: "Clean".into(),
1036 command: "cargo".into(),
1037 args: vec!["clean".into()],
1038 cwd: Some(RUST_MANIFEST_DIRNAME_TASK_VARIABLE.template_value()),
1039 ..TaskTemplate::default()
1040 },
1041 ];
1042
1043 if let Some(custom_target_dir) = custom_target_dir {
1044 task_templates = task_templates
1045 .into_iter()
1046 .map(|mut task_template| {
1047 let mut args = task_template.args.split_off(1);
1048 task_template.args.append(&mut vec![
1049 "--target-dir".to_string(),
1050 custom_target_dir.clone(),
1051 ]);
1052 task_template.args.append(&mut args);
1053
1054 task_template
1055 })
1056 .collect();
1057 }
1058
1059 Task::ready(Some(TaskTemplates(task_templates)))
1060 }
1061
1062 fn lsp_task_source(&self) -> Option<LanguageServerName> {
1063 Some(SERVER_NAME)
1064 }
1065}
1066
1067/// Part of the data structure of Cargo metadata
1068#[derive(Debug, serde::Deserialize)]
1069struct CargoMetadata {
1070 packages: Vec<CargoPackage>,
1071}
1072
1073#[derive(Debug, serde::Deserialize)]
1074struct CargoPackage {
1075 id: String,
1076 targets: Vec<CargoTarget>,
1077 manifest_path: Arc<Path>,
1078}
1079
1080#[derive(Debug, serde::Deserialize)]
1081struct CargoTarget {
1082 name: String,
1083 kind: Vec<String>,
1084 src_path: String,
1085 #[serde(rename = "required-features", default)]
1086 required_features: Vec<String>,
1087}
1088
1089#[derive(Debug, PartialEq)]
1090enum TargetKind {
1091 Bin,
1092 Example,
1093}
1094
1095impl Display for TargetKind {
1096 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
1097 match self {
1098 TargetKind::Bin => write!(f, "bin"),
1099 TargetKind::Example => write!(f, "example"),
1100 }
1101 }
1102}
1103
1104impl TryFrom<&str> for TargetKind {
1105 type Error = ();
1106 fn try_from(value: &str) -> Result<Self, ()> {
1107 match value {
1108 "bin" => Ok(Self::Bin),
1109 "example" => Ok(Self::Example),
1110 _ => Err(()),
1111 }
1112 }
1113}
1114/// Which package and binary target are we in?
1115#[derive(Debug, PartialEq)]
1116struct TargetInfo {
1117 package_name: String,
1118 target_name: String,
1119 target_kind: TargetKind,
1120 required_features: Vec<String>,
1121}
1122
1123async fn target_info_from_abs_path(
1124 abs_path: &Path,
1125 project_env: Option<&HashMap<String, String>>,
1126) -> Option<(Option<TargetInfo>, Arc<Path>)> {
1127 let mut command = util::command::new_smol_command("cargo");
1128 if let Some(envs) = project_env {
1129 command.envs(envs);
1130 }
1131 let output = command
1132 .current_dir(abs_path.parent()?)
1133 .arg("metadata")
1134 .arg("--no-deps")
1135 .arg("--format-version")
1136 .arg("1")
1137 .output()
1138 .await
1139 .log_err()?
1140 .stdout;
1141
1142 let metadata: CargoMetadata = serde_json::from_slice(&output).log_err()?;
1143 target_info_from_metadata(metadata, abs_path)
1144}
1145
1146fn target_info_from_metadata(
1147 metadata: CargoMetadata,
1148 abs_path: &Path,
1149) -> Option<(Option<TargetInfo>, Arc<Path>)> {
1150 let mut manifest_path = None;
1151 for package in metadata.packages {
1152 let Some(manifest_dir_path) = package.manifest_path.parent() else {
1153 continue;
1154 };
1155
1156 let Some(path_from_manifest_dir) = abs_path.strip_prefix(manifest_dir_path).ok() else {
1157 continue;
1158 };
1159 let candidate_path_length = path_from_manifest_dir.components().count();
1160 // Pick the most specific manifest path
1161 if let Some((path, current_length)) = &mut manifest_path {
1162 if candidate_path_length > *current_length {
1163 *path = Arc::from(manifest_dir_path);
1164 *current_length = candidate_path_length;
1165 }
1166 } else {
1167 manifest_path = Some((Arc::from(manifest_dir_path), candidate_path_length));
1168 };
1169
1170 for target in package.targets {
1171 let Some(bin_kind) = target
1172 .kind
1173 .iter()
1174 .find_map(|kind| TargetKind::try_from(kind.as_ref()).ok())
1175 else {
1176 continue;
1177 };
1178 let target_path = PathBuf::from(target.src_path);
1179 if target_path == abs_path {
1180 return manifest_path.map(|(path, _)| {
1181 (
1182 package_name_from_pkgid(&package.id).map(|package_name| TargetInfo {
1183 package_name: package_name.to_owned(),
1184 target_name: target.name,
1185 required_features: target.required_features,
1186 target_kind: bin_kind,
1187 }),
1188 path,
1189 )
1190 });
1191 }
1192 }
1193 }
1194
1195 manifest_path.map(|(path, _)| (None, path))
1196}
1197
1198async fn human_readable_package_name(
1199 package_directory: &Path,
1200 project_env: Option<&HashMap<String, String>>,
1201) -> Option<String> {
1202 let mut command = util::command::new_smol_command("cargo");
1203 if let Some(envs) = project_env {
1204 command.envs(envs);
1205 }
1206 let pkgid = String::from_utf8(
1207 command
1208 .current_dir(package_directory)
1209 .arg("pkgid")
1210 .output()
1211 .await
1212 .log_err()?
1213 .stdout,
1214 )
1215 .ok()?;
1216 Some(package_name_from_pkgid(&pkgid)?.to_owned())
1217}
1218
1219// For providing local `cargo check -p $pkgid` task, we do not need most of the information we have returned.
1220// Output example in the root of Zed project:
1221// ```sh
1222// ❯ cargo pkgid zed
1223// path+file:///absolute/path/to/project/zed/crates/zed#0.131.0
1224// ```
1225// Another variant, if a project has a custom package name or hyphen in the name:
1226// ```
1227// path+file:///absolute/path/to/project/custom-package#my-custom-package@0.1.0
1228// ```
1229//
1230// Extracts the package name from the output according to the spec:
1231// https://doc.rust-lang.org/cargo/reference/pkgid-spec.html#specification-grammar
1232fn package_name_from_pkgid(pkgid: &str) -> Option<&str> {
1233 fn split_off_suffix(input: &str, suffix_start: char) -> &str {
1234 match input.rsplit_once(suffix_start) {
1235 Some((without_suffix, _)) => without_suffix,
1236 None => input,
1237 }
1238 }
1239
1240 let (version_prefix, version_suffix) = pkgid.trim().rsplit_once('#')?;
1241 let package_name = match version_suffix.rsplit_once('@') {
1242 Some((custom_package_name, _version)) => custom_package_name,
1243 None => {
1244 let host_and_path = split_off_suffix(version_prefix, '?');
1245 let (_, package_name) = host_and_path.rsplit_once('/')?;
1246 package_name
1247 }
1248 };
1249 Some(package_name)
1250}
1251
1252async fn get_cached_server_binary(container_dir: PathBuf) -> Option<LanguageServerBinary> {
1253 let binary_result = maybe!(async {
1254 let mut last = None;
1255 let mut entries = fs::read_dir(&container_dir)
1256 .await
1257 .with_context(|| format!("listing {container_dir:?}"))?;
1258 while let Some(entry) = entries.next().await {
1259 let path = entry?.path();
1260 if path.extension().is_some_and(|ext| ext == "metadata") {
1261 continue;
1262 }
1263 last = Some(path);
1264 }
1265
1266 let path = match last {
1267 Some(last) => last,
1268 None => return Ok(None),
1269 };
1270 let path = match RustLspAdapter::GITHUB_ASSET_KIND {
1271 AssetKind::TarGz | AssetKind::Gz => path, // Tar and gzip extract in place.
1272 AssetKind::Zip => path.join("rust-analyzer.exe"), // zip contains a .exe
1273 };
1274
1275 anyhow::Ok(Some(LanguageServerBinary {
1276 path,
1277 env: None,
1278 arguments: Vec::new(),
1279 }))
1280 })
1281 .await;
1282
1283 match binary_result {
1284 Ok(Some(binary)) => Some(binary),
1285 Ok(None) => {
1286 log::info!("No cached rust-analyzer binary found");
1287 None
1288 }
1289 Err(e) => {
1290 log::error!("Failed to look up cached rust-analyzer binary: {e:#}");
1291 None
1292 }
1293 }
1294}
1295
1296fn test_fragment(variables: &TaskVariables, path: &Path, stem: &str) -> String {
1297 let fragment = if stem == "lib" {
1298 // This isn't quite right---it runs the tests for the entire library, rather than
1299 // just for the top-level `mod tests`. But we don't really have the means here to
1300 // filter out just that module.
1301 Some("--lib".to_owned())
1302 } else if stem == "mod" {
1303 maybe!({ Some(path.parent()?.file_name()?.to_string_lossy().into_owned()) })
1304 } else if stem == "main" {
1305 if let (Some(bin_name), Some(bin_kind)) = (
1306 variables.get(&RUST_BIN_NAME_TASK_VARIABLE),
1307 variables.get(&RUST_BIN_KIND_TASK_VARIABLE),
1308 ) {
1309 Some(format!("--{bin_kind}={bin_name}"))
1310 } else {
1311 None
1312 }
1313 } else {
1314 Some(stem.to_owned())
1315 };
1316 fragment.unwrap_or_else(|| "--".to_owned())
1317}
1318
1319#[cfg(test)]
1320mod tests {
1321 use std::num::NonZeroU32;
1322
1323 use super::*;
1324 use crate::language;
1325 use gpui::{BorrowAppContext, Hsla, TestAppContext};
1326 use lsp::CompletionItemLabelDetails;
1327 use settings::SettingsStore;
1328 use theme::SyntaxTheme;
1329 use util::path;
1330
1331 #[gpui::test]
1332 async fn test_process_rust_diagnostics() {
1333 let mut params = lsp::PublishDiagnosticsParams {
1334 uri: lsp::Uri::from_file_path(path!("/a")).unwrap(),
1335 version: None,
1336 diagnostics: vec![
1337 // no newlines
1338 lsp::Diagnostic {
1339 message: "use of moved value `a`".to_string(),
1340 ..Default::default()
1341 },
1342 // newline at the end of a code span
1343 lsp::Diagnostic {
1344 message: "consider importing this struct: `use b::c;\n`".to_string(),
1345 ..Default::default()
1346 },
1347 // code span starting right after a newline
1348 lsp::Diagnostic {
1349 message: "cannot borrow `self.d` as mutable\n`self` is a `&` reference"
1350 .to_string(),
1351 ..Default::default()
1352 },
1353 ],
1354 };
1355 RustLspAdapter.process_diagnostics(&mut params, LanguageServerId(0), None);
1356
1357 assert_eq!(params.diagnostics[0].message, "use of moved value `a`");
1358
1359 // remove trailing newline from code span
1360 assert_eq!(
1361 params.diagnostics[1].message,
1362 "consider importing this struct: `use b::c;`"
1363 );
1364
1365 // do not remove newline before the start of code span
1366 assert_eq!(
1367 params.diagnostics[2].message,
1368 "cannot borrow `self.d` as mutable\n`self` is a `&` reference"
1369 );
1370 }
1371
1372 #[gpui::test]
1373 async fn test_rust_label_for_completion() {
1374 let adapter = Arc::new(RustLspAdapter);
1375 let language = language("rust", tree_sitter_rust::LANGUAGE.into());
1376 let grammar = language.grammar().unwrap();
1377 let theme = SyntaxTheme::new_test([
1378 ("type", Hsla::default()),
1379 ("keyword", Hsla::default()),
1380 ("function", Hsla::default()),
1381 ("property", Hsla::default()),
1382 ]);
1383
1384 language.set_theme(&theme);
1385
1386 let highlight_function = grammar.highlight_id_for_name("function").unwrap();
1387 let highlight_type = grammar.highlight_id_for_name("type").unwrap();
1388 let highlight_keyword = grammar.highlight_id_for_name("keyword").unwrap();
1389 let highlight_field = grammar.highlight_id_for_name("property").unwrap();
1390
1391 assert_eq!(
1392 adapter
1393 .label_for_completion(
1394 &lsp::CompletionItem {
1395 kind: Some(lsp::CompletionItemKind::FUNCTION),
1396 label: "hello(…)".to_string(),
1397 label_details: Some(CompletionItemLabelDetails {
1398 detail: Some("(use crate::foo)".into()),
1399 description: Some("fn(&mut Option<T>) -> Vec<T>".to_string())
1400 }),
1401 ..Default::default()
1402 },
1403 &language
1404 )
1405 .await,
1406 Some(CodeLabel::new(
1407 "hello(&mut Option<T>) -> Vec<T> (use crate::foo)".to_string(),
1408 0..5,
1409 vec![
1410 (0..5, highlight_function),
1411 (7..10, highlight_keyword),
1412 (11..17, highlight_type),
1413 (18..19, highlight_type),
1414 (25..28, highlight_type),
1415 (29..30, highlight_type),
1416 ],
1417 ))
1418 );
1419 assert_eq!(
1420 adapter
1421 .label_for_completion(
1422 &lsp::CompletionItem {
1423 kind: Some(lsp::CompletionItemKind::FUNCTION),
1424 label: "hello(…)".to_string(),
1425 label_details: Some(CompletionItemLabelDetails {
1426 detail: Some("(use crate::foo)".into()),
1427 description: Some("async fn(&mut Option<T>) -> Vec<T>".to_string()),
1428 }),
1429 ..Default::default()
1430 },
1431 &language
1432 )
1433 .await,
1434 Some(CodeLabel::new(
1435 "hello(&mut Option<T>) -> Vec<T> (use crate::foo)".to_string(),
1436 0..5,
1437 vec![
1438 (0..5, highlight_function),
1439 (7..10, highlight_keyword),
1440 (11..17, highlight_type),
1441 (18..19, highlight_type),
1442 (25..28, highlight_type),
1443 (29..30, highlight_type),
1444 ],
1445 ))
1446 );
1447 assert_eq!(
1448 adapter
1449 .label_for_completion(
1450 &lsp::CompletionItem {
1451 kind: Some(lsp::CompletionItemKind::FIELD),
1452 label: "len".to_string(),
1453 detail: Some("usize".to_string()),
1454 ..Default::default()
1455 },
1456 &language
1457 )
1458 .await,
1459 Some(CodeLabel::new(
1460 "len: usize".to_string(),
1461 0..3,
1462 vec![(0..3, highlight_field), (5..10, highlight_type),],
1463 ))
1464 );
1465
1466 assert_eq!(
1467 adapter
1468 .label_for_completion(
1469 &lsp::CompletionItem {
1470 kind: Some(lsp::CompletionItemKind::FUNCTION),
1471 label: "hello(…)".to_string(),
1472 label_details: Some(CompletionItemLabelDetails {
1473 detail: Some("(use crate::foo)".to_string()),
1474 description: Some("fn(&mut Option<T>) -> Vec<T>".to_string()),
1475 }),
1476
1477 ..Default::default()
1478 },
1479 &language
1480 )
1481 .await,
1482 Some(CodeLabel::new(
1483 "hello(&mut Option<T>) -> Vec<T> (use crate::foo)".to_string(),
1484 0..5,
1485 vec![
1486 (0..5, highlight_function),
1487 (7..10, highlight_keyword),
1488 (11..17, highlight_type),
1489 (18..19, highlight_type),
1490 (25..28, highlight_type),
1491 (29..30, highlight_type),
1492 ],
1493 ))
1494 );
1495
1496 assert_eq!(
1497 adapter
1498 .label_for_completion(
1499 &lsp::CompletionItem {
1500 kind: Some(lsp::CompletionItemKind::FUNCTION),
1501 label: "hello".to_string(),
1502 label_details: Some(CompletionItemLabelDetails {
1503 detail: Some("(use crate::foo)".to_string()),
1504 description: Some("fn(&mut Option<T>) -> Vec<T>".to_string()),
1505 }),
1506 ..Default::default()
1507 },
1508 &language
1509 )
1510 .await,
1511 Some(CodeLabel::new(
1512 "hello(&mut Option<T>) -> Vec<T> (use crate::foo)".to_string(),
1513 0..5,
1514 vec![
1515 (0..5, highlight_function),
1516 (7..10, highlight_keyword),
1517 (11..17, highlight_type),
1518 (18..19, highlight_type),
1519 (25..28, highlight_type),
1520 (29..30, highlight_type),
1521 ],
1522 ))
1523 );
1524
1525 assert_eq!(
1526 adapter
1527 .label_for_completion(
1528 &lsp::CompletionItem {
1529 kind: Some(lsp::CompletionItemKind::METHOD),
1530 label: "await.as_deref_mut()".to_string(),
1531 filter_text: Some("as_deref_mut".to_string()),
1532 label_details: Some(CompletionItemLabelDetails {
1533 detail: None,
1534 description: Some("fn(&mut self) -> IterMut<'_, T>".to_string()),
1535 }),
1536 ..Default::default()
1537 },
1538 &language
1539 )
1540 .await,
1541 Some(CodeLabel::new(
1542 "await.as_deref_mut(&mut self) -> IterMut<'_, T>".to_string(),
1543 6..18,
1544 vec![
1545 (6..18, HighlightId(2)),
1546 (20..23, HighlightId(1)),
1547 (33..40, HighlightId(0)),
1548 (45..46, HighlightId(0))
1549 ],
1550 ))
1551 );
1552
1553 assert_eq!(
1554 adapter
1555 .label_for_completion(
1556 &lsp::CompletionItem {
1557 kind: Some(lsp::CompletionItemKind::METHOD),
1558 label: "as_deref_mut()".to_string(),
1559 filter_text: Some("as_deref_mut".to_string()),
1560 label_details: Some(CompletionItemLabelDetails {
1561 detail: None,
1562 description: Some(
1563 "pub fn as_deref_mut(&mut self) -> IterMut<'_, T>".to_string()
1564 ),
1565 }),
1566 ..Default::default()
1567 },
1568 &language
1569 )
1570 .await,
1571 Some(CodeLabel::new(
1572 "pub fn as_deref_mut(&mut self) -> IterMut<'_, T>".to_string(),
1573 7..19,
1574 vec![
1575 (0..3, HighlightId(1)),
1576 (4..6, HighlightId(1)),
1577 (7..19, HighlightId(2)),
1578 (21..24, HighlightId(1)),
1579 (34..41, HighlightId(0)),
1580 (46..47, HighlightId(0))
1581 ],
1582 ))
1583 );
1584
1585 assert_eq!(
1586 adapter
1587 .label_for_completion(
1588 &lsp::CompletionItem {
1589 kind: Some(lsp::CompletionItemKind::FIELD),
1590 label: "inner_value".to_string(),
1591 filter_text: Some("value".to_string()),
1592 detail: Some("String".to_string()),
1593 ..Default::default()
1594 },
1595 &language,
1596 )
1597 .await,
1598 Some(CodeLabel::new(
1599 "inner_value: String".to_string(),
1600 6..11,
1601 vec![(0..11, HighlightId(3)), (13..19, HighlightId(0))],
1602 ))
1603 );
1604
1605 // Snippet with insert tabstop (empty placeholder)
1606 assert_eq!(
1607 adapter
1608 .label_for_completion(
1609 &lsp::CompletionItem {
1610 kind: Some(lsp::CompletionItemKind::SNIPPET),
1611 label: "println!".to_string(),
1612 insert_text_format: Some(lsp::InsertTextFormat::SNIPPET),
1613 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
1614 range: lsp::Range::default(),
1615 new_text: "println!(\"$1\", $2)$0".to_string(),
1616 })),
1617 ..Default::default()
1618 },
1619 &language,
1620 )
1621 .await,
1622 Some(CodeLabel::new(
1623 "println!(\"…\", …)".to_string(),
1624 0..8,
1625 vec![
1626 (10..13, HighlightId::TABSTOP_INSERT_ID),
1627 (16..19, HighlightId::TABSTOP_INSERT_ID),
1628 (0..7, HighlightId(2)),
1629 (7..8, HighlightId(2)),
1630 ],
1631 ))
1632 );
1633
1634 // Snippet with replace tabstop (placeholder with default text)
1635 assert_eq!(
1636 adapter
1637 .label_for_completion(
1638 &lsp::CompletionItem {
1639 kind: Some(lsp::CompletionItemKind::SNIPPET),
1640 label: "vec!".to_string(),
1641 insert_text_format: Some(lsp::InsertTextFormat::SNIPPET),
1642 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
1643 range: lsp::Range::default(),
1644 new_text: "vec![${1:elem}]$0".to_string(),
1645 })),
1646 ..Default::default()
1647 },
1648 &language,
1649 )
1650 .await,
1651 Some(CodeLabel::new(
1652 "vec![elem]".to_string(),
1653 0..4,
1654 vec![
1655 (5..9, HighlightId::TABSTOP_REPLACE_ID),
1656 (0..3, HighlightId(2)),
1657 (3..4, HighlightId(2)),
1658 ],
1659 ))
1660 );
1661
1662 // Snippet with tabstop appearing more than once
1663 assert_eq!(
1664 adapter
1665 .label_for_completion(
1666 &lsp::CompletionItem {
1667 kind: Some(lsp::CompletionItemKind::SNIPPET),
1668 label: "if let".to_string(),
1669 insert_text_format: Some(lsp::InsertTextFormat::SNIPPET),
1670 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
1671 range: lsp::Range::default(),
1672 new_text: "if let ${1:pat} = $1 {\n $0\n}".to_string(),
1673 })),
1674 ..Default::default()
1675 },
1676 &language,
1677 )
1678 .await,
1679 Some(CodeLabel::new(
1680 "if let pat = … {\n \n}".to_string(),
1681 0..6,
1682 vec![
1683 (7..10, HighlightId::TABSTOP_REPLACE_ID),
1684 (13..16, HighlightId::TABSTOP_INSERT_ID),
1685 (0..2, HighlightId(1)),
1686 (3..6, HighlightId(1)),
1687 ],
1688 ))
1689 );
1690
1691 // Snippet with tabstops not in left-to-right order
1692 assert_eq!(
1693 adapter
1694 .label_for_completion(
1695 &lsp::CompletionItem {
1696 kind: Some(lsp::CompletionItemKind::SNIPPET),
1697 label: "for".to_string(),
1698 insert_text_format: Some(lsp::InsertTextFormat::SNIPPET),
1699 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
1700 range: lsp::Range::default(),
1701 new_text: "for ${2:item} in ${1:iter} {\n $0\n}".to_string(),
1702 })),
1703 ..Default::default()
1704 },
1705 &language,
1706 )
1707 .await,
1708 Some(CodeLabel::new(
1709 "for item in iter {\n \n}".to_string(),
1710 0..3,
1711 vec![
1712 (4..8, HighlightId::TABSTOP_REPLACE_ID),
1713 (12..16, HighlightId::TABSTOP_REPLACE_ID),
1714 (0..3, HighlightId(1)),
1715 (9..11, HighlightId(1)),
1716 ],
1717 ))
1718 );
1719
1720 // Postfix completion without actual tabstops (only implicit final $0)
1721 // The label should use completion.label so it can be filtered by "ref"
1722 let ref_completion = adapter
1723 .label_for_completion(
1724 &lsp::CompletionItem {
1725 kind: Some(lsp::CompletionItemKind::SNIPPET),
1726 label: "ref".to_string(),
1727 filter_text: Some("ref".to_string()),
1728 label_details: Some(CompletionItemLabelDetails {
1729 detail: None,
1730 description: Some("&expr".to_string()),
1731 }),
1732 detail: Some("&expr".to_string()),
1733 insert_text_format: Some(lsp::InsertTextFormat::SNIPPET),
1734 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
1735 range: lsp::Range::default(),
1736 new_text: "&String::new()".to_string(),
1737 })),
1738 ..Default::default()
1739 },
1740 &language,
1741 )
1742 .await;
1743 assert!(
1744 ref_completion.is_some(),
1745 "ref postfix completion should have a label"
1746 );
1747 let ref_label = ref_completion.unwrap();
1748 let filter_text = &ref_label.text[ref_label.filter_range.clone()];
1749 assert!(
1750 filter_text.contains("ref"),
1751 "filter range text '{filter_text}' should contain 'ref' for filtering to work",
1752 );
1753
1754 // Test for correct range calculation with mixed empty and non-empty tabstops.(See https://github.com/zed-industries/zed/issues/44825)
1755 let res = adapter
1756 .label_for_completion(
1757 &lsp::CompletionItem {
1758 kind: Some(lsp::CompletionItemKind::STRUCT),
1759 label: "Particles".to_string(),
1760 insert_text_format: Some(lsp::InsertTextFormat::SNIPPET),
1761 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
1762 range: lsp::Range::default(),
1763 new_text: "Particles { pos_x: $1, pos_y: $2, vel_x: $3, vel_y: $4, acc_x: ${5:()}, acc_y: ${6:()}, mass: $7 }$0".to_string(),
1764 })),
1765 ..Default::default()
1766 },
1767 &language,
1768 )
1769 .await
1770 .unwrap();
1771
1772 assert_eq!(
1773 res,
1774 CodeLabel::new(
1775 "Particles { pos_x: …, pos_y: …, vel_x: …, vel_y: …, acc_x: (), acc_y: (), mass: … }".to_string(),
1776 0..9,
1777 vec![
1778 (19..22, HighlightId::TABSTOP_INSERT_ID),
1779 (31..34, HighlightId::TABSTOP_INSERT_ID),
1780 (43..46, HighlightId::TABSTOP_INSERT_ID),
1781 (55..58, HighlightId::TABSTOP_INSERT_ID),
1782 (67..69, HighlightId::TABSTOP_REPLACE_ID),
1783 (78..80, HighlightId::TABSTOP_REPLACE_ID),
1784 (88..91, HighlightId::TABSTOP_INSERT_ID),
1785 (0..9, highlight_type),
1786 (60..65, highlight_field),
1787 (71..76, highlight_field),
1788 ],
1789 )
1790 );
1791 }
1792
1793 #[gpui::test]
1794 async fn test_rust_label_for_symbol() {
1795 let adapter = Arc::new(RustLspAdapter);
1796 let language = language("rust", tree_sitter_rust::LANGUAGE.into());
1797 let grammar = language.grammar().unwrap();
1798 let theme = SyntaxTheme::new_test([
1799 ("type", Hsla::default()),
1800 ("keyword", Hsla::default()),
1801 ("function", Hsla::default()),
1802 ("property", Hsla::default()),
1803 ]);
1804
1805 language.set_theme(&theme);
1806
1807 let highlight_function = grammar.highlight_id_for_name("function").unwrap();
1808 let highlight_type = grammar.highlight_id_for_name("type").unwrap();
1809 let highlight_keyword = grammar.highlight_id_for_name("keyword").unwrap();
1810
1811 assert_eq!(
1812 adapter
1813 .label_for_symbol("hello", lsp::SymbolKind::FUNCTION, &language)
1814 .await,
1815 Some(CodeLabel::new(
1816 "fn hello".to_string(),
1817 3..8,
1818 vec![(0..2, highlight_keyword), (3..8, highlight_function)],
1819 ))
1820 );
1821
1822 assert_eq!(
1823 adapter
1824 .label_for_symbol("World", lsp::SymbolKind::TYPE_PARAMETER, &language)
1825 .await,
1826 Some(CodeLabel::new(
1827 "type World".to_string(),
1828 5..10,
1829 vec![(0..4, highlight_keyword), (5..10, highlight_type)],
1830 ))
1831 );
1832
1833 assert_eq!(
1834 adapter
1835 .label_for_symbol("zed", lsp::SymbolKind::PACKAGE, &language)
1836 .await,
1837 Some(CodeLabel::new(
1838 "extern crate zed".to_string(),
1839 13..16,
1840 vec![(0..6, highlight_keyword), (7..12, highlight_keyword),],
1841 ))
1842 );
1843
1844 assert_eq!(
1845 adapter
1846 .label_for_symbol("Variant", lsp::SymbolKind::ENUM_MEMBER, &language)
1847 .await,
1848 Some(CodeLabel::new(
1849 "Variant".to_string(),
1850 0..7,
1851 vec![(0..7, highlight_type)],
1852 ))
1853 );
1854 }
1855
1856 #[gpui::test]
1857 async fn test_rust_autoindent(cx: &mut TestAppContext) {
1858 // cx.executor().set_block_on_ticks(usize::MAX..=usize::MAX);
1859 cx.update(|cx| {
1860 let test_settings = SettingsStore::test(cx);
1861 cx.set_global(test_settings);
1862 cx.update_global::<SettingsStore, _>(|store, cx| {
1863 store.update_user_settings(cx, |s| {
1864 s.project.all_languages.defaults.tab_size = NonZeroU32::new(2);
1865 });
1866 });
1867 });
1868
1869 let language = crate::language("rust", tree_sitter_rust::LANGUAGE.into());
1870
1871 cx.new(|cx| {
1872 let mut buffer = Buffer::local("", cx).with_language(language, cx);
1873
1874 // indent between braces
1875 buffer.set_text("fn a() {}", cx);
1876 let ix = buffer.len() - 1;
1877 buffer.edit([(ix..ix, "\n\n")], Some(AutoindentMode::EachLine), cx);
1878 assert_eq!(buffer.text(), "fn a() {\n \n}");
1879
1880 // indent between braces, even after empty lines
1881 buffer.set_text("fn a() {\n\n\n}", cx);
1882 let ix = buffer.len() - 2;
1883 buffer.edit([(ix..ix, "\n")], Some(AutoindentMode::EachLine), cx);
1884 assert_eq!(buffer.text(), "fn a() {\n\n\n \n}");
1885
1886 // indent a line that continues a field expression
1887 buffer.set_text("fn a() {\n \n}", cx);
1888 let ix = buffer.len() - 2;
1889 buffer.edit([(ix..ix, "b\n.c")], Some(AutoindentMode::EachLine), cx);
1890 assert_eq!(buffer.text(), "fn a() {\n b\n .c\n}");
1891
1892 // indent further lines that continue the field expression, even after empty lines
1893 let ix = buffer.len() - 2;
1894 buffer.edit([(ix..ix, "\n\n.d")], Some(AutoindentMode::EachLine), cx);
1895 assert_eq!(buffer.text(), "fn a() {\n b\n .c\n \n .d\n}");
1896
1897 // dedent the line after the field expression
1898 let ix = buffer.len() - 2;
1899 buffer.edit([(ix..ix, ";\ne")], Some(AutoindentMode::EachLine), cx);
1900 assert_eq!(
1901 buffer.text(),
1902 "fn a() {\n b\n .c\n \n .d;\n e\n}"
1903 );
1904
1905 // indent inside a struct within a call
1906 buffer.set_text("const a: B = c(D {});", cx);
1907 let ix = buffer.len() - 3;
1908 buffer.edit([(ix..ix, "\n\n")], Some(AutoindentMode::EachLine), cx);
1909 assert_eq!(buffer.text(), "const a: B = c(D {\n \n});");
1910
1911 // indent further inside a nested call
1912 let ix = buffer.len() - 4;
1913 buffer.edit([(ix..ix, "e: f(\n\n)")], Some(AutoindentMode::EachLine), cx);
1914 assert_eq!(buffer.text(), "const a: B = c(D {\n e: f(\n \n )\n});");
1915
1916 // keep that indent after an empty line
1917 let ix = buffer.len() - 8;
1918 buffer.edit([(ix..ix, "\n")], Some(AutoindentMode::EachLine), cx);
1919 assert_eq!(
1920 buffer.text(),
1921 "const a: B = c(D {\n e: f(\n \n \n )\n});"
1922 );
1923
1924 buffer
1925 });
1926 }
1927
1928 #[test]
1929 fn test_package_name_from_pkgid() {
1930 for (input, expected) in [
1931 (
1932 "path+file:///absolute/path/to/project/zed/crates/zed#0.131.0",
1933 "zed",
1934 ),
1935 (
1936 "path+file:///absolute/path/to/project/custom-package#my-custom-package@0.1.0",
1937 "my-custom-package",
1938 ),
1939 ] {
1940 assert_eq!(package_name_from_pkgid(input), Some(expected));
1941 }
1942 }
1943
1944 #[test]
1945 fn test_target_info_from_metadata() {
1946 for (input, absolute_path, expected) in [
1947 (
1948 r#"{"packages":[{"id":"path+file:///absolute/path/to/project/zed/crates/zed#0.131.0","manifest_path":"/path/to/zed/Cargo.toml","targets":[{"name":"zed","kind":["bin"],"src_path":"/path/to/zed/src/main.rs"}]}]}"#,
1949 "/path/to/zed/src/main.rs",
1950 Some((
1951 Some(TargetInfo {
1952 package_name: "zed".into(),
1953 target_name: "zed".into(),
1954 required_features: Vec::new(),
1955 target_kind: TargetKind::Bin,
1956 }),
1957 Arc::from("/path/to/zed".as_ref()),
1958 )),
1959 ),
1960 (
1961 r#"{"packages":[{"id":"path+file:///path/to/custom-package#my-custom-package@0.1.0","manifest_path":"/path/to/custom-package/Cargo.toml","targets":[{"name":"my-custom-bin","kind":["bin"],"src_path":"/path/to/custom-package/src/main.rs"}]}]}"#,
1962 "/path/to/custom-package/src/main.rs",
1963 Some((
1964 Some(TargetInfo {
1965 package_name: "my-custom-package".into(),
1966 target_name: "my-custom-bin".into(),
1967 required_features: Vec::new(),
1968 target_kind: TargetKind::Bin,
1969 }),
1970 Arc::from("/path/to/custom-package".as_ref()),
1971 )),
1972 ),
1973 (
1974 r#"{"packages":[{"id":"path+file:///path/to/custom-package#my-custom-package@0.1.0","targets":[{"name":"my-custom-bin","kind":["example"],"src_path":"/path/to/custom-package/src/main.rs"}],"manifest_path":"/path/to/custom-package/Cargo.toml"}]}"#,
1975 "/path/to/custom-package/src/main.rs",
1976 Some((
1977 Some(TargetInfo {
1978 package_name: "my-custom-package".into(),
1979 target_name: "my-custom-bin".into(),
1980 required_features: Vec::new(),
1981 target_kind: TargetKind::Example,
1982 }),
1983 Arc::from("/path/to/custom-package".as_ref()),
1984 )),
1985 ),
1986 (
1987 r#"{"packages":[{"id":"path+file:///path/to/custom-package#my-custom-package@0.1.0","manifest_path":"/path/to/custom-package/Cargo.toml","targets":[{"name":"my-custom-bin","kind":["example"],"src_path":"/path/to/custom-package/src/main.rs","required-features":["foo","bar"]}]}]}"#,
1988 "/path/to/custom-package/src/main.rs",
1989 Some((
1990 Some(TargetInfo {
1991 package_name: "my-custom-package".into(),
1992 target_name: "my-custom-bin".into(),
1993 required_features: vec!["foo".to_owned(), "bar".to_owned()],
1994 target_kind: TargetKind::Example,
1995 }),
1996 Arc::from("/path/to/custom-package".as_ref()),
1997 )),
1998 ),
1999 (
2000 r#"{"packages":[{"id":"path+file:///path/to/custom-package#my-custom-package@0.1.0","targets":[{"name":"my-custom-bin","kind":["example"],"src_path":"/path/to/custom-package/src/main.rs","required-features":[]}],"manifest_path":"/path/to/custom-package/Cargo.toml"}]}"#,
2001 "/path/to/custom-package/src/main.rs",
2002 Some((
2003 Some(TargetInfo {
2004 package_name: "my-custom-package".into(),
2005 target_name: "my-custom-bin".into(),
2006 required_features: vec![],
2007 target_kind: TargetKind::Example,
2008 }),
2009 Arc::from("/path/to/custom-package".as_ref()),
2010 )),
2011 ),
2012 (
2013 r#"{"packages":[{"id":"path+file:///path/to/custom-package#my-custom-package@0.1.0","targets":[{"name":"my-custom-package","kind":["lib"],"src_path":"/path/to/custom-package/src/main.rs"}],"manifest_path":"/path/to/custom-package/Cargo.toml"}]}"#,
2014 "/path/to/custom-package/src/main.rs",
2015 Some((None, Arc::from("/path/to/custom-package".as_ref()))),
2016 ),
2017 ] {
2018 let metadata: CargoMetadata = serde_json::from_str(input).context(input).unwrap();
2019
2020 let absolute_path = Path::new(absolute_path);
2021
2022 assert_eq!(target_info_from_metadata(metadata, absolute_path), expected);
2023 }
2024 }
2025
2026 #[test]
2027 fn test_rust_test_fragment() {
2028 #[track_caller]
2029 fn check(
2030 variables: impl IntoIterator<Item = (VariableName, &'static str)>,
2031 path: &str,
2032 expected: &str,
2033 ) {
2034 let path = Path::new(path);
2035 let found = test_fragment(
2036 &TaskVariables::from_iter(variables.into_iter().map(|(k, v)| (k, v.to_owned()))),
2037 path,
2038 path.file_stem().unwrap().to_str().unwrap(),
2039 );
2040 assert_eq!(expected, found);
2041 }
2042
2043 check([], "/project/src/lib.rs", "--lib");
2044 check([], "/project/src/foo/mod.rs", "foo");
2045 check(
2046 [
2047 (RUST_BIN_KIND_TASK_VARIABLE.clone(), "bin"),
2048 (RUST_BIN_NAME_TASK_VARIABLE, "x"),
2049 ],
2050 "/project/src/main.rs",
2051 "--bin=x",
2052 );
2053 check([], "/project/src/main.rs", "--");
2054 }
2055
2056 #[test]
2057 fn test_convert_rust_analyzer_schema() {
2058 let raw_schema = serde_json::json!([
2059 {
2060 "title": "Assist",
2061 "properties": {
2062 "rust-analyzer.assist.emitMustUse": {
2063 "markdownDescription": "Insert #[must_use] when generating `as_` methods for enum variants.",
2064 "default": false,
2065 "type": "boolean"
2066 }
2067 }
2068 },
2069 {
2070 "title": "Assist",
2071 "properties": {
2072 "rust-analyzer.assist.expressionFillDefault": {
2073 "markdownDescription": "Placeholder expression to use for missing expressions in assists.",
2074 "default": "todo",
2075 "type": "string"
2076 }
2077 }
2078 },
2079 {
2080 "title": "Cache Priming",
2081 "properties": {
2082 "rust-analyzer.cachePriming.enable": {
2083 "markdownDescription": "Warm up caches on project load.",
2084 "default": true,
2085 "type": "boolean"
2086 }
2087 }
2088 }
2089 ]);
2090
2091 let converted = RustLspAdapter::convert_rust_analyzer_schema(&raw_schema);
2092
2093 assert_eq!(
2094 converted.get("type").and_then(|v| v.as_str()),
2095 Some("object")
2096 );
2097
2098 let properties = converted
2099 .pointer("/properties")
2100 .expect("should have properties")
2101 .as_object()
2102 .expect("properties should be object");
2103
2104 assert!(properties.contains_key("assist"));
2105 assert!(properties.contains_key("cachePriming"));
2106 assert!(!properties.contains_key("rust-analyzer"));
2107
2108 let assist_props = properties
2109 .get("assist")
2110 .expect("should have assist")
2111 .pointer("/properties")
2112 .expect("assist should have properties")
2113 .as_object()
2114 .expect("assist properties should be object");
2115
2116 assert!(assist_props.contains_key("emitMustUse"));
2117 assert!(assist_props.contains_key("expressionFillDefault"));
2118
2119 let emit_must_use = assist_props
2120 .get("emitMustUse")
2121 .expect("should have emitMustUse");
2122 assert_eq!(
2123 emit_must_use.get("type").and_then(|v| v.as_str()),
2124 Some("boolean")
2125 );
2126 assert_eq!(
2127 emit_must_use.get("default").and_then(|v| v.as_bool()),
2128 Some(false)
2129 );
2130
2131 let cache_priming_props = properties
2132 .get("cachePriming")
2133 .expect("should have cachePriming")
2134 .pointer("/properties")
2135 .expect("cachePriming should have properties")
2136 .as_object()
2137 .expect("cachePriming properties should be object");
2138
2139 assert!(cache_priming_props.contains_key("enable"));
2140 }
2141}