1 //! Config used by the language server.
3 //! We currently get this config from `initialize` LSP request, which is not the
4 //! best way to do it, but was the simplest thing we could implement.
6 //! Of particular interest is the `feature_flags` hash map: while other fields
7 //! configure the server itself, feature flags are passed into analysis, and
8 //! tweak things like automatic insertion of `()` in completions.
10 use std::{ffi::OsString, iter, path::PathBuf};
12 use flycheck::FlycheckConfig;
14 AssistConfig, CompletionConfig, DiagnosticsConfig, ExprFillDefaultMode, HighlightRelatedConfig,
15 HoverConfig, HoverDocFormat, InlayHintsConfig, JoinLinesConfig, Snippet, SnippetScope,
17 use ide_db::helpers::{
18 insert_use::{ImportGranularity, InsertUseConfig, PrefixKind},
21 use lsp_types::{ClientCapabilities, MarkupKind};
23 CargoConfig, ProjectJson, ProjectJsonData, ProjectManifest, RustcSource, UnsetTestCrates,
25 use rustc_hash::{FxHashMap, FxHashSet};
26 use serde::{de::DeserializeOwned, Deserialize};
30 caps::completion_item_edit_resolve,
31 diagnostics::DiagnosticsMapConfig,
32 line_index::OffsetEncoding,
33 lsp_ext::supports_utf8,
34 lsp_ext::WorkspaceSymbolSearchScope,
35 lsp_ext::{self, WorkspaceSymbolSearchKind},
38 // Defines the server-side configuration of the rust-analyzer. We generate
39 // *parts* of VS Code's `package.json` config from this.
41 // However, editor specific config, which the server doesn't know about, should
42 // be specified directly in `package.json`.
44 // To deprecate an option by replacing it with another name use `new_name | `old_name` so that we keep
45 // parsing the old name.
48 /// Placeholder for missing expressions in assists.
49 assist_exprFillDefault: ExprFillDefaultDef = "\"todo\"",
50 /// How imports should be grouped into use statements.
51 assist_importGranularity |
52 assist_importMergeBehavior |
53 assist_importMergeBehaviour: ImportGranularityDef = "\"crate\"",
54 /// Whether to enforce the import granularity setting for all files. If set to false rust-analyzer will try to keep import styles consistent per file.
55 assist_importEnforceGranularity: bool = "false",
56 /// The path structure for newly inserted paths to use.
57 assist_importPrefix: ImportPrefixDef = "\"plain\"",
58 /// Group inserted imports by the https://rust-analyzer.github.io/manual.html#auto-import[following order]. Groups are separated by newlines.
59 assist_importGroup: bool = "true",
60 /// Whether to allow import insertion to merge new imports into single path glob imports like `use std::fmt::*;`.
61 assist_allowMergingIntoGlobImports: bool = "true",
63 /// Warm up caches on project load.
64 cache_warmup: bool = "true",
66 /// Show function name and docs in parameter hints.
67 callInfo_full: bool = "true",
69 /// Automatically refresh project info via `cargo metadata` on
70 /// `Cargo.toml` changes.
71 cargo_autoreload: bool = "true",
72 /// Activate all available features (`--all-features`).
73 cargo_allFeatures: bool = "false",
74 /// Unsets `#[cfg(test)]` for the specified crates.
75 cargo_unsetTest: Vec<String> = "[\"core\"]",
76 /// List of features to activate.
77 cargo_features: Vec<String> = "[]",
78 /// Run build scripts (`build.rs`) for more precise code analysis.
79 cargo_runBuildScripts |
80 cargo_loadOutDirsFromCheck: bool = "true",
81 /// Use `RUSTC_WRAPPER=rust-analyzer` when running build scripts to
82 /// avoid compiling unnecessary things.
83 cargo_useRustcWrapperForBuildScripts: bool = "true",
84 /// Do not activate the `default` feature.
85 cargo_noDefaultFeatures: bool = "false",
86 /// Compilation target (target triple).
87 cargo_target: Option<String> = "null",
88 /// Internal config for debugging, disables loading of sysroot crates.
89 cargo_noSysroot: bool = "false",
91 /// Run specified `cargo check` command for diagnostics on save.
92 checkOnSave_enable: bool = "true",
93 /// Check with all features (`--all-features`).
94 /// Defaults to `#rust-analyzer.cargo.allFeatures#`.
95 checkOnSave_allFeatures: Option<bool> = "null",
96 /// Check all targets and tests (`--all-targets`).
97 checkOnSave_allTargets: bool = "true",
98 /// Cargo command to use for `cargo check`.
99 checkOnSave_command: String = "\"check\"",
100 /// Do not activate the `default` feature.
101 checkOnSave_noDefaultFeatures: Option<bool> = "null",
102 /// Check for a specific target. Defaults to
103 /// `#rust-analyzer.cargo.target#`.
104 checkOnSave_target: Option<String> = "null",
105 /// Extra arguments for `cargo check`.
106 checkOnSave_extraArgs: Vec<String> = "[]",
107 /// List of features to activate. Defaults to
108 /// `#rust-analyzer.cargo.features#`.
109 checkOnSave_features: Option<Vec<String>> = "null",
110 /// Advanced option, fully override the command rust-analyzer uses for
111 /// checking. The command should include `--message-format=json` or
113 checkOnSave_overrideCommand: Option<Vec<String>> = "null",
115 /// Whether to add argument snippets when completing functions.
116 /// Only applies when `#rust-analyzer.completion.addCallParenthesis#` is set.
117 completion_addCallArgumentSnippets: bool = "true",
118 /// Whether to add parenthesis when completing functions.
119 completion_addCallParenthesis: bool = "true",
120 /// Custom completion snippets.
121 // NOTE: Keep this list in sync with the feature docs of user snippets.
122 completion_snippets: FxHashMap<String, SnippetDef> = r#"{
125 "body": "Arc::new(${receiver})",
126 "requires": "std::sync::Arc",
127 "description": "Put the expression into an `Arc`",
132 "body": "Rc::new(${receiver})",
133 "requires": "std::rc::Rc",
134 "description": "Put the expression into an `Rc`",
139 "body": "Box::pin(${receiver})",
140 "requires": "std::boxed::Box",
141 "description": "Put the expression into a pinned `Box`",
146 "body": "Ok(${receiver})",
147 "description": "Wrap the expression in a `Result::Ok`",
152 "body": "Err(${receiver})",
153 "description": "Wrap the expression in a `Result::Err`",
158 "body": "Some(${receiver})",
159 "description": "Wrap the expression in an `Option::Some`",
163 /// Whether to show postfix snippets like `dbg`, `if`, `not`, etc.
164 completion_postfix_enable: bool = "true",
165 /// Toggles the additional completions that automatically add imports when completed.
166 /// Note that your client must specify the `additionalTextEdits` LSP client capability to truly have this feature enabled.
167 completion_autoimport_enable: bool = "true",
168 /// Toggles the additional completions that automatically show method calls and field accesses
169 /// with `self` prefixed to them when inside a method.
170 completion_autoself_enable: bool = "true",
172 /// Whether to show native rust-analyzer diagnostics.
173 diagnostics_enable: bool = "true",
174 /// Whether to show experimental rust-analyzer diagnostics that might
175 /// have more false positives than usual.
176 diagnostics_enableExperimental: bool = "true",
177 /// List of rust-analyzer diagnostics to disable.
178 diagnostics_disabled: FxHashSet<String> = "[]",
179 /// Map of prefixes to be substituted when parsing diagnostic file paths.
180 /// This should be the reverse mapping of what is passed to `rustc` as `--remap-path-prefix`.
181 diagnostics_remapPrefix: FxHashMap<String, String> = "{}",
182 /// List of warnings that should be displayed with hint severity.
184 /// The warnings will be indicated by faded text or three dots in code
185 /// and will not show up in the `Problems Panel`.
186 diagnostics_warningsAsHint: Vec<String> = "[]",
187 /// List of warnings that should be displayed with info severity.
189 /// The warnings will be indicated by a blue squiggly underline in code
190 /// and a blue icon in the `Problems Panel`.
191 diagnostics_warningsAsInfo: Vec<String> = "[]",
193 /// Expand attribute macros.
194 experimental_procAttrMacros: bool = "true",
196 /// Controls file watching implementation.
197 files_watcher: String = "\"client\"",
198 /// These directories will be ignored by rust-analyzer. They are
199 /// relative to the workspace root, and globs are not supported. You may
200 /// also need to add the folders to Code's `files.watcherExclude`.
201 files_excludeDirs: Vec<PathBuf> = "[]",
203 /// Enables highlighting of related references while hovering your mouse above any identifier.
204 highlightRelated_references: bool = "true",
205 /// Enables highlighting of all exit points while hovering your mouse above any `return`, `?`, or return type arrow (`->`).
206 highlightRelated_exitPoints: bool = "true",
207 /// Enables highlighting of related references while hovering your mouse `break`, `loop`, `while`, or `for` keywords.
208 highlightRelated_breakPoints: bool = "true",
209 /// Enables highlighting of all break points for a loop or block context while hovering your mouse above any `async` or `await` keywords.
210 highlightRelated_yieldPoints: bool = "true",
212 /// Use semantic tokens for strings.
214 /// In some editors (e.g. vscode) semantic tokens override other highlighting grammars.
215 /// By disabling semantic tokens for strings, other grammars can be used to highlight
217 highlighting_strings: bool = "true",
219 /// Whether to show documentation on hover.
220 hover_documentation: bool = "true",
221 /// Use markdown syntax for links in hover.
223 hoverActions_linksInHover: bool = "true",
225 /// Whether to show `Debug` action. Only applies when
226 /// `#rust-analyzer.hoverActions.enable#` is set.
227 hoverActions_debug: bool = "true",
228 /// Whether to show HoverActions in Rust files.
229 hoverActions_enable: bool = "true",
230 /// Whether to show `Go to Type Definition` action. Only applies when
231 /// `#rust-analyzer.hoverActions.enable#` is set.
232 hoverActions_gotoTypeDef: bool = "true",
233 /// Whether to show `Implementations` action. Only applies when
234 /// `#rust-analyzer.hoverActions.enable#` is set.
235 hoverActions_implementations: bool = "true",
236 /// Whether to show `References` action. Only applies when
237 /// `#rust-analyzer.hoverActions.enable#` is set.
238 hoverActions_references: bool = "false",
239 /// Whether to show `Run` action. Only applies when
240 /// `#rust-analyzer.hoverActions.enable#` is set.
241 hoverActions_run: bool = "true",
243 /// Whether to show inlay type hints for method chains.
244 inlayHints_chainingHints: bool = "true",
245 /// Maximum length for inlay hints. Set to null to have an unlimited length.
246 inlayHints_maxLength: Option<usize> = "25",
247 /// Whether to show function parameter name inlay hints at the call
249 inlayHints_parameterHints: bool = "true",
250 /// Whether to show inlay type hints for variables.
251 inlayHints_typeHints: bool = "true",
252 /// Whether to hide inlay hints for constructors.
253 inlayHints_hideNamedConstructorHints: bool = "false",
255 /// Join lines inserts else between consecutive ifs.
256 joinLines_joinElseIf: bool = "true",
257 /// Join lines removes trailing commas.
258 joinLines_removeTrailingComma: bool = "true",
259 /// Join lines unwraps trivial blocks.
260 joinLines_unwrapTrivialBlock: bool = "true",
261 /// Join lines merges consecutive declaration and initialization of an assignment.
262 joinLines_joinAssignments: bool = "true",
264 /// Whether to show `Debug` lens. Only applies when
265 /// `#rust-analyzer.lens.enable#` is set.
266 lens_debug: bool = "true",
267 /// Whether to show CodeLens in Rust files.
268 lens_enable: bool = "true",
269 /// Whether to show `Implementations` lens. Only applies when
270 /// `#rust-analyzer.lens.enable#` is set.
271 lens_implementations: bool = "true",
272 /// Whether to show `Run` lens. Only applies when
273 /// `#rust-analyzer.lens.enable#` is set.
274 lens_run: bool = "true",
275 /// Whether to show `Method References` lens. Only applies when
276 /// `#rust-analyzer.lens.enable#` is set.
277 lens_methodReferences: bool = "false",
278 /// Whether to show `References` lens for Struct, Enum, Union and Trait.
279 /// Only applies when `#rust-analyzer.lens.enable#` is set.
280 lens_references: bool = "false",
281 /// Whether to show `References` lens for Enum Variants.
282 /// Only applies when `#rust-analyzer.lens.enable#` is set.
283 lens_enumVariantReferences: bool = "false",
284 /// Internal config: use custom client-side commands even when the
285 /// client doesn't set the corresponding capability.
286 lens_forceCustomCommands: bool = "true",
288 /// Disable project auto-discovery in favor of explicitly specified set
291 /// Elements must be paths pointing to `Cargo.toml`,
292 /// `rust-project.json`, or JSON objects in `rust-project.json` format.
293 linkedProjects: Vec<ManifestOrProjectJson> = "[]",
295 /// Number of syntax trees rust-analyzer keeps in memory. Defaults to 128.
296 lruCapacity: Option<usize> = "null",
298 /// Whether to show `can't find Cargo.toml` error message.
299 notifications_cargoTomlNotFound: bool = "true",
301 /// How many worker threads to to handle priming caches. The default `0` means to pick automatically.
302 primeCaches_numThreads: ParallelPrimeCachesNumThreads = "0",
304 /// Enable support for procedural macros, implies `#rust-analyzer.cargo.runBuildScripts#`.
305 procMacro_enable: bool = "true",
306 /// Internal config, path to proc-macro server executable (typically,
307 /// this is rust-analyzer itself, but we override this in tests).
308 procMacro_server: Option<PathBuf> = "null",
309 /// These proc-macros will be ignored when trying to expand them.
311 /// This config takes a map of crate names with the exported proc-macro names to ignore as values.
312 procMacro_ignored: FxHashMap<Box<str>, Box<[Box<str>]>> = "{}",
314 /// Command to be executed instead of 'cargo' for runnables.
315 runnables_overrideCargo: Option<String> = "null",
316 /// Additional arguments to be passed to cargo for runnables such as
317 /// tests or binaries. For example, it may be `--release`.
318 runnables_cargoExtraArgs: Vec<String> = "[]",
320 /// Path to the Cargo.toml of the rust compiler workspace, for usage in rustc_private
321 /// projects, or "discover" to try to automatically find it if the `rustc-dev` component
324 /// Any project which uses rust-analyzer with the rustcPrivate
325 /// crates must set `[package.metadata.rust-analyzer] rustc_private=true` to use it.
327 /// This option does not take effect until rust-analyzer is restarted.
328 rustcSource: Option<String> = "null",
330 /// Additional arguments to `rustfmt`.
331 rustfmt_extraArgs: Vec<String> = "[]",
332 /// Advanced option, fully override the command rust-analyzer uses for
334 rustfmt_overrideCommand: Option<Vec<String>> = "null",
335 /// Enables the use of rustfmt's unstable range formatting command for the
336 /// `textDocument/rangeFormatting` request. The rustfmt option is unstable and only
337 /// available on a nightly build.
338 rustfmt_enableRangeFormatting: bool = "false",
340 /// Workspace symbol search scope.
341 workspace_symbol_search_scope: WorkspaceSymbolSearchScopeDef = "\"workspace\"",
342 /// Workspace symbol search kind.
343 workspace_symbol_search_kind: WorkspaceSymbolSearchKindDef = "\"only_types\"",
347 impl Default for ConfigData {
348 fn default() -> Self {
349 ConfigData::from_json(serde_json::Value::Null, &mut Vec::new())
353 #[derive(Debug, Clone)]
355 pub caps: lsp_types::ClientCapabilities,
357 detached_files: Vec<AbsPathBuf>,
358 pub discovered_projects: Option<Vec<ProjectManifest>>,
359 pub root_path: AbsPathBuf,
360 snippets: Vec<Snippet>,
363 #[derive(Debug, Clone, Eq, PartialEq)]
364 pub enum LinkedProject {
365 ProjectManifest(ProjectManifest),
366 InlineJsonProject(ProjectJson),
369 impl From<ProjectManifest> for LinkedProject {
370 fn from(v: ProjectManifest) -> Self {
371 LinkedProject::ProjectManifest(v)
375 impl From<ProjectJson> for LinkedProject {
376 fn from(v: ProjectJson) -> Self {
377 LinkedProject::InlineJsonProject(v)
381 #[derive(Clone, Debug, PartialEq, Eq)]
382 pub struct LensConfig {
385 pub implementations: bool,
386 pub method_refs: bool,
387 pub refs: bool, // for Struct, Enum, Union and Trait
388 pub enum_variant_refs: bool,
392 pub fn any(&self) -> bool {
393 self.implementations || self.runnable() || self.references()
396 pub fn none(&self) -> bool {
400 pub fn runnable(&self) -> bool {
401 self.run || self.debug
404 pub fn references(&self) -> bool {
405 self.method_refs || self.refs || self.enum_variant_refs
409 #[derive(Clone, Debug, PartialEq, Eq)]
410 pub struct HoverActionsConfig {
411 pub implementations: bool,
412 pub references: bool,
415 pub goto_type_def: bool,
418 impl HoverActionsConfig {
419 pub const NO_ACTIONS: Self = Self {
420 implementations: false,
424 goto_type_def: false,
427 pub fn any(&self) -> bool {
428 self.implementations || self.references || self.runnable() || self.goto_type_def
431 pub fn none(&self) -> bool {
435 pub fn runnable(&self) -> bool {
436 self.run || self.debug
440 #[derive(Debug, Clone)]
441 pub struct FilesConfig {
442 pub watcher: FilesWatcher,
443 pub exclude: Vec<AbsPathBuf>,
446 #[derive(Debug, Clone)]
447 pub enum FilesWatcher {
452 #[derive(Debug, Clone)]
453 pub struct NotificationsConfig {
454 pub cargo_toml_not_found: bool,
457 #[derive(Debug, Clone)]
458 pub enum RustfmtConfig {
459 Rustfmt { extra_args: Vec<String>, enable_range_formatting: bool },
460 CustomCommand { command: String, args: Vec<String> },
463 /// Configuration for runnable items, such as `main` function or tests.
464 #[derive(Debug, Clone)]
465 pub struct RunnablesConfig {
466 /// Custom command to be executed instead of `cargo` for runnables.
467 pub override_cargo: Option<String>,
468 /// Additional arguments for the `cargo`, e.g. `--release`.
469 pub cargo_extra_args: Vec<String>,
472 /// Configuration for workspace symbol search requests.
473 #[derive(Debug, Clone)]
474 pub struct WorkspaceSymbolConfig {
475 /// In what scope should the symbol be searched in.
476 pub search_scope: WorkspaceSymbolSearchScope,
477 /// What kind of symbol is being search for.
478 pub search_kind: WorkspaceSymbolSearchKind,
481 pub struct ClientCommandsConfig {
482 pub run_single: bool,
483 pub debug_single: bool,
484 pub show_reference: bool,
485 pub goto_location: bool,
486 pub trigger_parameter_hints: bool,
490 pub fn new(root_path: AbsPathBuf, caps: ClientCapabilities) -> Self {
493 data: ConfigData::default(),
494 detached_files: Vec::new(),
495 discovered_projects: None,
497 snippets: Default::default(),
502 mut json: serde_json::Value,
503 ) -> Result<(), Vec<(String, serde_json::Error)>> {
504 tracing::info!("updating config from JSON: {:#}", json);
505 if json.is_null() || json.as_object().map_or(false, |it| it.is_empty()) {
508 let mut errors = Vec::new();
509 self.detached_files =
510 get_field::<Vec<PathBuf>>(&mut json, &mut errors, "detachedFiles", None, "[]")
512 .map(AbsPathBuf::assert)
514 self.data = ConfigData::from_json(json, &mut errors);
515 self.snippets.clear();
516 for (name, def) in self.data.completion_snippets.iter() {
517 if def.prefix.is_empty() && def.postfix.is_empty() {
520 let scope = match def.scope {
521 SnippetScopeDef::Expr => SnippetScope::Expr,
522 SnippetScopeDef::Type => SnippetScope::Type,
523 SnippetScopeDef::Item => SnippetScope::Item,
529 def.description.as_ref().unwrap_or(name),
533 Some(snippet) => self.snippets.push(snippet),
534 None => tracing::info!("Invalid snippet {}", name),
537 if errors.is_empty() {
544 pub fn json_schema() -> serde_json::Value {
545 ConfigData::json_schema()
551 || -> _ { Some($expr) }()
554 macro_rules! try_or {
555 ($expr:expr, $or:expr) => {
556 try_!($expr).unwrap_or($or)
561 pub fn linked_projects(&self) -> Vec<LinkedProject> {
562 if self.data.linkedProjects.is_empty() {
563 self.discovered_projects
568 .map(LinkedProject::from)
574 .filter_map(|linked_project| {
575 let res = match linked_project {
576 ManifestOrProjectJson::Manifest(it) => {
577 let path = self.root_path.join(it);
578 ProjectManifest::from_manifest_file(path)
580 tracing::error!("failed to load linked project: {}", e)
585 ManifestOrProjectJson::ProjectJson(it) => {
586 ProjectJson::new(&self.root_path, it.clone()).into()
595 pub fn detached_files(&self) -> &[AbsPathBuf] {
599 pub fn did_save_text_document_dynamic_registration(&self) -> bool {
601 try_or!(self.caps.text_document.as_ref()?.synchronization.clone()?, Default::default());
602 caps.did_save == Some(true) && caps.dynamic_registration == Some(true)
604 pub fn did_change_watched_files_dynamic_registration(&self) -> bool {
606 self.caps.workspace.as_ref()?.did_change_watched_files.as_ref()?.dynamic_registration?,
611 pub fn prefill_caches(&self) -> bool {
612 self.data.cache_warmup
615 pub fn location_link(&self) -> bool {
616 try_or!(self.caps.text_document.as_ref()?.definition?.link_support?, false)
618 pub fn line_folding_only(&self) -> bool {
619 try_or!(self.caps.text_document.as_ref()?.folding_range.as_ref()?.line_folding_only?, false)
621 pub fn hierarchical_symbols(&self) -> bool {
628 .hierarchical_document_symbol_support?,
632 pub fn code_action_literals(&self) -> bool {
639 .code_action_literal_support
643 pub fn work_done_progress(&self) -> bool {
644 try_or!(self.caps.window.as_ref()?.work_done_progress?, false)
646 pub fn will_rename(&self) -> bool {
647 try_or!(self.caps.workspace.as_ref()?.file_operations.as_ref()?.will_rename?, false)
649 pub fn change_annotation_support(&self) -> bool {
656 .change_annotation_support
660 pub fn code_action_resolve(&self) -> bool {
674 .any(|it| it == "edit")
676 pub fn signature_help_label_offsets(&self) -> bool {
683 .signature_information
685 .parameter_information
687 .label_offset_support?,
691 pub fn offset_encoding(&self) -> OffsetEncoding {
692 if supports_utf8(&self.caps) {
695 OffsetEncoding::Utf16
699 fn experimental(&self, index: &'static str) -> bool {
700 try_or!(self.caps.experimental.as_ref()?.get(index)?.as_bool()?, false)
702 pub fn code_action_group(&self) -> bool {
703 self.experimental("codeActionGroup")
705 pub fn server_status_notification(&self) -> bool {
706 self.experimental("serverStatusNotification")
709 pub fn publish_diagnostics(&self) -> bool {
710 self.data.diagnostics_enable
712 pub fn diagnostics(&self) -> DiagnosticsConfig {
714 disable_experimental: !self.data.diagnostics_enableExperimental,
715 disabled: self.data.diagnostics_disabled.clone(),
716 expr_fill_default: match self.data.assist_exprFillDefault {
717 ExprFillDefaultDef::Todo => ExprFillDefaultMode::Todo,
718 ExprFillDefaultDef::Default => ExprFillDefaultMode::Default,
722 pub fn diagnostics_map(&self) -> DiagnosticsMapConfig {
723 DiagnosticsMapConfig {
724 remap_prefix: self.data.diagnostics_remapPrefix.clone(),
725 warnings_as_info: self.data.diagnostics_warningsAsInfo.clone(),
726 warnings_as_hint: self.data.diagnostics_warningsAsHint.clone(),
729 pub fn lru_capacity(&self) -> Option<usize> {
730 self.data.lruCapacity
732 pub fn proc_macro_srv(&self) -> Option<(AbsPathBuf, Vec<OsString>)> {
733 if !self.data.procMacro_enable {
736 let path = match &self.data.procMacro_server {
737 Some(it) => self.root_path.join(it),
738 None => AbsPathBuf::assert(std::env::current_exe().ok()?),
740 Some((path, vec!["proc-macro".into()]))
742 pub fn dummy_replacements(&self) -> &FxHashMap<Box<str>, Box<[Box<str>]>> {
743 &self.data.procMacro_ignored
745 pub fn expand_proc_attr_macros(&self) -> bool {
746 self.data.experimental_procAttrMacros
748 pub fn files(&self) -> FilesConfig {
750 watcher: match self.data.files_watcher.as_str() {
751 "notify" => FilesWatcher::Notify,
752 "client" if self.did_change_watched_files_dynamic_registration() => {
755 _ => FilesWatcher::Notify,
757 exclude: self.data.files_excludeDirs.iter().map(|it| self.root_path.join(it)).collect(),
760 pub fn notifications(&self) -> NotificationsConfig {
761 NotificationsConfig { cargo_toml_not_found: self.data.notifications_cargoTomlNotFound }
763 pub fn cargo_autoreload(&self) -> bool {
764 self.data.cargo_autoreload
766 pub fn run_build_scripts(&self) -> bool {
767 self.data.cargo_runBuildScripts || self.data.procMacro_enable
769 pub fn cargo(&self) -> CargoConfig {
770 let rustc_source = self.data.rustcSource.as_ref().map(|rustc_src| {
771 if rustc_src == "discover" {
772 RustcSource::Discover
774 RustcSource::Path(self.root_path.join(rustc_src))
779 no_default_features: self.data.cargo_noDefaultFeatures,
780 all_features: self.data.cargo_allFeatures,
781 features: self.data.cargo_features.clone(),
782 target: self.data.cargo_target.clone(),
783 no_sysroot: self.data.cargo_noSysroot,
785 unset_test_crates: UnsetTestCrates::Only(self.data.cargo_unsetTest.clone()),
786 wrap_rustc_in_build_scripts: self.data.cargo_useRustcWrapperForBuildScripts,
790 pub fn rustfmt(&self) -> RustfmtConfig {
791 match &self.data.rustfmt_overrideCommand {
792 Some(args) if !args.is_empty() => {
793 let mut args = args.clone();
794 let command = args.remove(0);
795 RustfmtConfig::CustomCommand { command, args }
797 Some(_) | None => RustfmtConfig::Rustfmt {
798 extra_args: self.data.rustfmt_extraArgs.clone(),
799 enable_range_formatting: self.data.rustfmt_enableRangeFormatting,
803 pub fn flycheck(&self) -> Option<FlycheckConfig> {
804 if !self.data.checkOnSave_enable {
807 let flycheck_config = match &self.data.checkOnSave_overrideCommand {
808 Some(args) if !args.is_empty() => {
809 let mut args = args.clone();
810 let command = args.remove(0);
811 FlycheckConfig::CustomCommand { command, args }
813 Some(_) | None => FlycheckConfig::CargoCommand {
814 command: self.data.checkOnSave_command.clone(),
819 .or_else(|| self.data.cargo_target.clone()),
820 all_targets: self.data.checkOnSave_allTargets,
821 no_default_features: self
823 .checkOnSave_noDefaultFeatures
824 .unwrap_or(self.data.cargo_noDefaultFeatures),
827 .checkOnSave_allFeatures
828 .unwrap_or(self.data.cargo_allFeatures),
831 .checkOnSave_features
833 .unwrap_or_else(|| self.data.cargo_features.clone()),
834 extra_args: self.data.checkOnSave_extraArgs.clone(),
837 Some(flycheck_config)
839 pub fn runnables(&self) -> RunnablesConfig {
841 override_cargo: self.data.runnables_overrideCargo.clone(),
842 cargo_extra_args: self.data.runnables_cargoExtraArgs.clone(),
845 pub fn inlay_hints(&self) -> InlayHintsConfig {
847 type_hints: self.data.inlayHints_typeHints,
848 parameter_hints: self.data.inlayHints_parameterHints,
849 chaining_hints: self.data.inlayHints_chainingHints,
850 hide_named_constructor_hints: self.data.inlayHints_hideNamedConstructorHints,
851 max_length: self.data.inlayHints_maxLength,
854 fn insert_use_config(&self) -> InsertUseConfig {
856 granularity: match self.data.assist_importGranularity {
857 ImportGranularityDef::Preserve => ImportGranularity::Preserve,
858 ImportGranularityDef::Item => ImportGranularity::Item,
859 ImportGranularityDef::Crate => ImportGranularity::Crate,
860 ImportGranularityDef::Module => ImportGranularity::Module,
862 enforce_granularity: self.data.assist_importEnforceGranularity,
863 prefix_kind: match self.data.assist_importPrefix {
864 ImportPrefixDef::Plain => PrefixKind::Plain,
865 ImportPrefixDef::ByCrate => PrefixKind::ByCrate,
866 ImportPrefixDef::BySelf => PrefixKind::BySelf,
868 group: self.data.assist_importGroup,
869 skip_glob_imports: !self.data.assist_allowMergingIntoGlobImports,
872 pub fn completion(&self) -> CompletionConfig {
874 enable_postfix_completions: self.data.completion_postfix_enable,
875 enable_imports_on_the_fly: self.data.completion_autoimport_enable
876 && completion_item_edit_resolve(&self.caps),
877 enable_self_on_the_fly: self.data.completion_autoself_enable,
878 add_call_parenthesis: self.data.completion_addCallParenthesis,
879 add_call_argument_snippets: self.data.completion_addCallArgumentSnippets,
880 insert_use: self.insert_use_config(),
881 snippet_cap: SnippetCap::new(try_or!(
892 snippets: self.snippets.clone(),
895 pub fn assist(&self) -> AssistConfig {
897 snippet_cap: SnippetCap::new(self.experimental("snippetTextEdit")),
899 insert_use: self.insert_use_config(),
902 pub fn join_lines(&self) -> JoinLinesConfig {
904 join_else_if: self.data.joinLines_joinElseIf,
905 remove_trailing_comma: self.data.joinLines_removeTrailingComma,
906 unwrap_trivial_blocks: self.data.joinLines_unwrapTrivialBlock,
907 join_assignments: self.data.joinLines_joinAssignments,
910 pub fn call_info_full(&self) -> bool {
911 self.data.callInfo_full
913 pub fn lens(&self) -> LensConfig {
915 run: self.data.lens_enable && self.data.lens_run,
916 debug: self.data.lens_enable && self.data.lens_debug,
917 implementations: self.data.lens_enable && self.data.lens_implementations,
918 method_refs: self.data.lens_enable && self.data.lens_methodReferences,
919 refs: self.data.lens_enable && self.data.lens_references,
920 enum_variant_refs: self.data.lens_enable && self.data.lens_enumVariantReferences,
923 pub fn hover_actions(&self) -> HoverActionsConfig {
924 let enable = self.experimental("hoverActions") && self.data.hoverActions_enable;
926 implementations: enable && self.data.hoverActions_implementations,
927 references: enable && self.data.hoverActions_references,
928 run: enable && self.data.hoverActions_run,
929 debug: enable && self.data.hoverActions_debug,
930 goto_type_def: enable && self.data.hoverActions_gotoTypeDef,
933 pub fn highlighting_strings(&self) -> bool {
934 self.data.highlighting_strings
936 pub fn hover(&self) -> HoverConfig {
938 links_in_hover: self.data.hover_linksInHover,
939 documentation: self.data.hover_documentation.then(|| {
940 let is_markdown = try_or!(
951 .contains(&MarkupKind::Markdown);
953 HoverDocFormat::Markdown
955 HoverDocFormat::PlainText
961 pub fn workspace_symbol(&self) -> WorkspaceSymbolConfig {
962 WorkspaceSymbolConfig {
963 search_scope: match self.data.workspace_symbol_search_scope {
964 WorkspaceSymbolSearchScopeDef::Workspace => WorkspaceSymbolSearchScope::Workspace,
965 WorkspaceSymbolSearchScopeDef::WorkspaceAndDependencies => {
966 WorkspaceSymbolSearchScope::WorkspaceAndDependencies
969 search_kind: match self.data.workspace_symbol_search_kind {
970 WorkspaceSymbolSearchKindDef::OnlyTypes => WorkspaceSymbolSearchKind::OnlyTypes,
971 WorkspaceSymbolSearchKindDef::AllSymbols => WorkspaceSymbolSearchKind::AllSymbols,
976 pub fn semantic_tokens_refresh(&self) -> bool {
977 try_or!(self.caps.workspace.as_ref()?.semantic_tokens.as_ref()?.refresh_support?, false)
979 pub fn code_lens_refresh(&self) -> bool {
980 try_or!(self.caps.workspace.as_ref()?.code_lens.as_ref()?.refresh_support?, false)
982 pub fn insert_replace_support(&self) -> bool {
991 .insert_replace_support?,
995 pub fn client_commands(&self) -> ClientCommandsConfig {
997 try_or!(self.caps.experimental.as_ref()?.get("commands")?, &serde_json::Value::Null);
998 let commands: Option<lsp_ext::ClientCommandOptions> =
999 serde_json::from_value(commands.clone()).ok();
1000 let force = commands.is_none() && self.data.lens_forceCustomCommands;
1001 let commands = commands.map(|it| it.commands).unwrap_or_default();
1003 let get = |name: &str| commands.iter().any(|it| it == name) || force;
1005 ClientCommandsConfig {
1006 run_single: get("rust-analyzer.runSingle"),
1007 debug_single: get("rust-analyzer.debugSingle"),
1008 show_reference: get("rust-analyzer.showReferences"),
1009 goto_location: get("rust-analyzer.gotoLocation"),
1010 trigger_parameter_hints: get("editor.action.triggerParameterHints"),
1014 pub fn highlight_related(&self) -> HighlightRelatedConfig {
1015 HighlightRelatedConfig {
1016 references: self.data.highlightRelated_references,
1017 break_points: self.data.highlightRelated_breakPoints,
1018 exit_points: self.data.highlightRelated_exitPoints,
1019 yield_points: self.data.highlightRelated_yieldPoints,
1023 pub fn prime_caches_num_threads(&self) -> u8 {
1024 match self.data.primeCaches_numThreads {
1025 0 => num_cpus::get_physical().try_into().unwrap_or(u8::MAX),
1031 #[derive(Deserialize, Debug, Clone, Copy)]
1032 #[serde(rename_all = "snake_case")]
1033 enum SnippetScopeDef {
1039 impl Default for SnippetScopeDef {
1040 fn default() -> Self {
1041 SnippetScopeDef::Expr
1045 #[derive(Deserialize, Debug, Clone, Default)]
1048 #[serde(deserialize_with = "single_or_array")]
1049 prefix: Vec<String>,
1050 #[serde(deserialize_with = "single_or_array")]
1051 postfix: Vec<String>,
1052 description: Option<String>,
1053 #[serde(deserialize_with = "single_or_array")]
1055 #[serde(deserialize_with = "single_or_array")]
1056 requires: Vec<String>,
1057 scope: SnippetScopeDef,
1060 fn single_or_array<'de, D>(deserializer: D) -> Result<Vec<String>, D::Error>
1062 D: serde::Deserializer<'de>,
1066 impl<'de> serde::de::Visitor<'de> for SingleOrVec {
1067 type Value = Vec<String>;
1069 fn expecting(&self, formatter: &mut std::fmt::Formatter) -> std::fmt::Result {
1070 formatter.write_str("string or array of strings")
1073 fn visit_str<E>(self, value: &str) -> Result<Self::Value, E>
1075 E: serde::de::Error,
1077 Ok(vec![value.to_owned()])
1080 fn visit_seq<A>(self, seq: A) -> Result<Self::Value, A::Error>
1082 A: serde::de::SeqAccess<'de>,
1084 Deserialize::deserialize(serde::de::value::SeqAccessDeserializer::new(seq))
1088 deserializer.deserialize_any(SingleOrVec)
1091 #[derive(Deserialize, Debug, Clone)]
1093 enum ManifestOrProjectJson {
1095 ProjectJson(ProjectJsonData),
1098 #[derive(Deserialize, Debug, Clone)]
1099 #[serde(rename_all = "snake_case")]
1100 pub enum ExprFillDefaultDef {
1101 #[serde(alias = "todo")]
1103 #[serde(alias = "default")]
1107 #[derive(Deserialize, Debug, Clone)]
1108 #[serde(rename_all = "snake_case")]
1109 enum ImportGranularityDef {
1111 #[serde(alias = "none")]
1113 #[serde(alias = "full")]
1115 #[serde(alias = "last")]
1119 #[derive(Deserialize, Debug, Clone)]
1120 #[serde(rename_all = "snake_case")]
1121 enum ImportPrefixDef {
1123 #[serde(alias = "self")]
1125 #[serde(alias = "crate")]
1129 #[derive(Deserialize, Debug, Clone)]
1130 #[serde(rename_all = "snake_case")]
1131 enum WorkspaceSymbolSearchScopeDef {
1133 WorkspaceAndDependencies,
1136 #[derive(Deserialize, Debug, Clone)]
1137 #[serde(rename_all = "snake_case")]
1138 enum WorkspaceSymbolSearchKindDef {
1143 type ParallelPrimeCachesNumThreads = u8;
1145 macro_rules! _config_data {
1146 (struct $name:ident {
1148 $(#[doc=$doc:literal])*
1149 $field:ident $(| $alias:ident)*: $ty:ty = $default:expr,
1152 #[allow(non_snake_case)]
1153 #[derive(Debug, Clone)]
1154 struct $name { $($field: $ty,)* }
1156 fn from_json(mut json: serde_json::Value, error_sink: &mut Vec<(String, serde_json::Error)>) -> $name {
1162 None$(.or(Some(stringify!($alias))))*,
1168 fn json_schema() -> serde_json::Value {
1171 let field = stringify!($field);
1172 let ty = stringify!($ty);
1174 (field, ty, &[$($doc),*], $default)
1180 fn manual() -> String {
1183 let field = stringify!($field);
1184 let ty = stringify!($ty);
1186 (field, ty, &[$($doc),*], $default)
1193 use _config_data as config_data;
1195 fn get_field<T: DeserializeOwned>(
1196 json: &mut serde_json::Value,
1197 error_sink: &mut Vec<(String, serde_json::Error)>,
1198 field: &'static str,
1199 alias: Option<&'static str>,
1202 let default = serde_json::from_str(default).unwrap();
1204 // XXX: check alias first, to work-around the VS Code where it pre-fills the
1205 // defaults instead of sending an empty object.
1208 .chain(iter::once(field))
1209 .find_map(move |field| {
1210 let mut pointer = field.replace('_', "/");
1211 pointer.insert(0, '/');
1212 json.pointer_mut(&pointer).and_then(|it| match serde_json::from_value(it.take()) {
1215 tracing::warn!("Failed to deserialize config field at {}: {:?}", pointer, e);
1216 error_sink.push((pointer, e));
1224 fn schema(fields: &[(&'static str, &'static str, &[&str], &str)]) -> serde_json::Value {
1225 for ((f1, ..), (f2, ..)) in fields.iter().zip(&fields[1..]) {
1226 fn key(f: &str) -> &str {
1227 f.splitn(2, '_').next().unwrap()
1229 assert!(key(f1) <= key(f2), "wrong field order: {:?} {:?}", f1, f2);
1234 .map(|(field, ty, doc, default)| {
1235 let name = field.replace("_", ".");
1236 let name = format!("rust-analyzer.{}", name);
1237 let props = field_props(field, ty, doc, default);
1240 .collect::<serde_json::Map<_, _>>();
1244 fn field_props(field: &str, ty: &str, doc: &[&str], default: &str) -> serde_json::Value {
1245 let doc = doc_comment_to_string(doc);
1246 let doc = doc.trim_end_matches('\n');
1248 doc.ends_with('.') && doc.starts_with(char::is_uppercase),
1249 "bad docs for {}: {:?}",
1253 let default = default.parse::<serde_json::Value>().unwrap();
1255 let mut map = serde_json::Map::default();
1257 ($($key:literal: $value:tt),*$(,)?) => {{$(
1258 map.insert($key.into(), serde_json::json!($value));
1261 set!("markdownDescription": doc);
1262 set!("default": default);
1265 "bool" => set!("type": "boolean"),
1266 "String" => set!("type": "string"),
1267 "Vec<String>" => set! {
1269 "items": { "type": "string" },
1271 "Vec<PathBuf>" => set! {
1273 "items": { "type": "string" },
1275 "FxHashSet<String>" => set! {
1277 "items": { "type": "string" },
1278 "uniqueItems": true,
1280 "FxHashMap<Box<str>, Box<[Box<str>]>>" => set! {
1283 "FxHashMap<String, SnippetDef>" => set! {
1286 "FxHashMap<String, String>" => set! {
1289 "Option<usize>" => set! {
1290 "type": ["null", "integer"],
1293 "Option<String>" => set! {
1294 "type": ["null", "string"],
1296 "Option<PathBuf>" => set! {
1297 "type": ["null", "string"],
1299 "Option<bool>" => set! {
1300 "type": ["null", "boolean"],
1302 "Option<Vec<String>>" => set! {
1303 "type": ["null", "array"],
1304 "items": { "type": "string" },
1306 "MergeBehaviorDef" => set! {
1308 "enum": ["none", "crate", "module"],
1309 "enumDescriptions": [
1310 "Do not merge imports at all.",
1311 "Merge imports from the same crate into a single `use` statement.",
1312 "Merge imports from the same module into a single `use` statement."
1315 "ExprFillDefaultDef" => set! {
1317 "enum": ["todo", "default"],
1318 "enumDescriptions": [
1319 "Fill missing expressions with the `todo` macro",
1320 "Fill missing expressions with reasonable defaults, `new` or `default` constructors."
1323 "ImportGranularityDef" => set! {
1325 "enum": ["preserve", "crate", "module", "item"],
1326 "enumDescriptions": [
1327 "Do not change the granularity of any imports and preserve the original structure written by the developer.",
1328 "Merge imports from the same crate into a single use statement. Conversely, imports from different crates are split into separate statements.",
1329 "Merge imports from the same module into a single use statement. Conversely, imports from different modules are split into separate statements.",
1330 "Flatten imports so that each has its own use statement."
1333 "ImportPrefixDef" => set! {
1340 "enumDescriptions": [
1341 "Insert import paths relative to the current module, using up to one `super` prefix if the parent module contains the requested item.",
1342 "Insert import paths relative to the current module, using up to one `super` prefix if the parent module contains the requested item. Prefixes `self` in front of the path if it starts with a module.",
1343 "Force import paths to be absolute by always starting them with `crate` or the extern crate name they come from."
1346 "Vec<ManifestOrProjectJson>" => set! {
1348 "items": { "type": ["string", "object"] },
1350 "WorkspaceSymbolSearchScopeDef" => set! {
1352 "enum": ["workspace", "workspace_and_dependencies"],
1353 "enumDescriptions": [
1354 "Search in current workspace only",
1355 "Search in current workspace and dependencies"
1358 "WorkspaceSymbolSearchKindDef" => set! {
1360 "enum": ["only_types", "all_symbols"],
1361 "enumDescriptions": [
1362 "Search for types only",
1363 "Search for all symbols kinds"
1366 "ParallelPrimeCachesNumThreads" => set! {
1371 _ => panic!("{}: {}", ty, default),
1378 fn manual(fields: &[(&'static str, &'static str, &[&str], &str)]) -> String {
1381 .map(|(field, _ty, doc, default)| {
1382 let name = format!("rust-analyzer.{}", field.replace("_", "."));
1383 let doc = doc_comment_to_string(*doc);
1384 if default.contains('\n') {
1396 name, name, default, doc
1399 format!("[[{}]]{} (default: `{}`)::\n+\n--\n{}--\n", name, name, default, doc)
1402 .collect::<String>()
1405 fn doc_comment_to_string(doc: &[&str]) -> String {
1406 doc.iter().map(|it| it.strip_prefix(' ').unwrap_or(it)).map(|it| format!("{}\n", it)).collect()
1413 use test_utils::{ensure_file_contents, project_root};
1418 fn generate_package_json_config() {
1419 let s = Config::json_schema();
1420 let schema = format!("{:#}", s);
1421 let mut schema = schema
1422 .trim_start_matches('{')
1423 .trim_end_matches('}')
1425 .replace("\n", "\n ")
1426 .trim_start_matches('\n')
1429 schema.push_str(",\n");
1431 // Transform the asciidoc form link to markdown style.
1433 // https://link[text] => [text](https://link)
1434 let url_matches = schema.match_indices("https://");
1435 let mut url_offsets = url_matches.map(|(idx, _)| idx).collect::<Vec<usize>>();
1436 url_offsets.reverse();
1437 for idx in url_offsets {
1438 let link = &schema[idx..];
1439 // matching on whitespace to ignore normal links
1440 if let Some(link_end) = link.find(|c| c == ' ' || c == '[') {
1441 if link.chars().nth(link_end) == Some('[') {
1442 if let Some(link_text_end) = link.find(']') {
1443 let link_text = link[link_end..(link_text_end + 1)].to_string();
1445 schema.replace_range((idx + link_end)..(idx + link_text_end + 1), "");
1446 schema.insert(idx, '(');
1447 schema.insert(idx + link_end + 1, ')');
1448 schema.insert_str(idx, &link_text);
1454 let package_json_path = project_root().join("editors/code/package.json");
1455 let mut package_json = fs::read_to_string(&package_json_path).unwrap();
1457 let start_marker = " \"$generated-start\": {},\n";
1458 let end_marker = " \"$generated-end\": {}\n";
1460 let start = package_json.find(start_marker).unwrap() + start_marker.len();
1461 let end = package_json.find(end_marker).unwrap();
1463 let p = remove_ws(&package_json[start..end]);
1464 let s = remove_ws(&schema);
1465 if !p.contains(&s) {
1466 package_json.replace_range(start..end, &schema);
1467 ensure_file_contents(&package_json_path, &package_json)
1472 fn generate_config_documentation() {
1473 let docs_path = project_root().join("docs/user/generated_config.adoc");
1474 let expected = ConfigData::manual();
1475 ensure_file_contents(&docs_path, &expected);
1478 fn remove_ws(text: &str) -> String {
1479 text.replace(char::is_whitespace, "")