crates/rust-analyzer/src/config.rs

   1 //! Config used by the language server.
   2 //!
   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.
   5 //!
   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.
   9
  10 use std::{ffi::OsString, path::PathBuf};
  11
  12 use flycheck::FlycheckConfig;
  13 use ide::{
  14     AssistConfig, CompletionConfig, DiagnosticsConfig, HoverConfig, InlayHintsConfig,
  15     MergeBehaviour,
  16 };
  17 use lsp_types::ClientCapabilities;
  18 use project_model::{CargoConfig, ProjectJson, ProjectJsonData, ProjectManifest};
  19 use rustc_hash::FxHashSet;
  20 use serde::Deserialize;
  21 use vfs::AbsPathBuf;
  22
  23 use crate::diagnostics::DiagnosticsMapConfig;
  24
  25 #[derive(Debug, Clone)]
  26 pub struct Config {
  27     pub client_caps: ClientCapsConfig,
  28
  29     pub publish_diagnostics: bool,
  30     pub diagnostics: DiagnosticsConfig,
  31     pub diagnostics_map: DiagnosticsMapConfig,
  32     pub lru_capacity: Option<usize>,
  33     pub proc_macro_srv: Option<(PathBuf, Vec<OsString>)>,
  34     pub files: FilesConfig,
  35     pub notifications: NotificationsConfig,
  36
  37     pub cargo_autoreload: bool,
  38     pub cargo: CargoConfig,
  39     pub rustfmt: RustfmtConfig,
  40     pub flycheck: Option<FlycheckConfig>,
  41
  42     pub inlay_hints: InlayHintsConfig,
  43     pub completion: CompletionConfig,
  44     pub assist: AssistConfig,
  45     pub call_info_full: bool,
  46     pub lens: LensConfig,
  47     pub hover: HoverConfig,
  48
  49     pub with_sysroot: bool,
  50     pub linked_projects: Vec<LinkedProject>,
  51     pub root_path: AbsPathBuf,
  52 }
  53
  54 #[derive(Debug, Clone, Eq, PartialEq)]
  55 pub enum LinkedProject {
  56     ProjectManifest(ProjectManifest),
  57     InlineJsonProject(ProjectJson),
  58 }
  59
  60 impl From<ProjectManifest> for LinkedProject {
  61     fn from(v: ProjectManifest) -> Self {
  62         LinkedProject::ProjectManifest(v)
  63     }
  64 }
  65
  66 impl From<ProjectJson> for LinkedProject {
  67     fn from(v: ProjectJson) -> Self {
  68         LinkedProject::InlineJsonProject(v)
  69     }
  70 }
  71
  72 #[derive(Clone, Debug, PartialEq, Eq)]
  73 pub struct LensConfig {
  74     pub run: bool,
  75     pub debug: bool,
  76     pub implementations: bool,
  77 }
  78
  79 impl Default for LensConfig {
  80     fn default() -> Self {
  81         Self { run: true, debug: true, implementations: true }
  82     }
  83 }
  84
  85 impl LensConfig {
  86     pub const NO_LENS: LensConfig = Self { run: false, debug: false, implementations: false };
  87
  88     pub fn any(&self) -> bool {
  89         self.implementations || self.runnable()
  90     }
  91
  92     pub fn none(&self) -> bool {
  93         !self.any()
  94     }
  95
  96     pub fn runnable(&self) -> bool {
  97         self.run || self.debug
  98     }
  99 }
 100
 101 #[derive(Debug, Clone)]
 102 pub struct FilesConfig {
 103     pub watcher: FilesWatcher,
 104     pub exclude: Vec<String>,
 105 }
 106
 107 #[derive(Debug, Clone)]
 108 pub enum FilesWatcher {
 109     Client,
 110     Notify,
 111 }
 112
 113 #[derive(Debug, Clone)]
 114 pub struct NotificationsConfig {
 115     pub cargo_toml_not_found: bool,
 116 }
 117
 118 #[derive(Debug, Clone)]
 119 pub enum RustfmtConfig {
 120     Rustfmt { extra_args: Vec<String> },
 121     CustomCommand { command: String, args: Vec<String> },
 122 }
 123
 124 #[derive(Debug, Clone, Default)]
 125 pub struct ClientCapsConfig {
 126     pub location_link: bool,
 127     pub line_folding_only: bool,
 128     pub hierarchical_symbols: bool,
 129     pub code_action_literals: bool,
 130     pub work_done_progress: bool,
 131     pub code_action_group: bool,
 132     pub resolve_code_action: bool,
 133     pub hover_actions: bool,
 134     pub status_notification: bool,
 135     pub signature_help_label_offsets: bool,
 136 }
 137
 138 impl Config {
 139     pub fn new(root_path: AbsPathBuf) -> Self {
 140         Config {
 141             client_caps: ClientCapsConfig::default(),
 142
 143             with_sysroot: true,
 144             publish_diagnostics: true,
 145             diagnostics: DiagnosticsConfig::default(),
 146             diagnostics_map: DiagnosticsMapConfig::default(),
 147             lru_capacity: None,
 148             proc_macro_srv: None,
 149             files: FilesConfig { watcher: FilesWatcher::Notify, exclude: Vec::new() },
 150             notifications: NotificationsConfig { cargo_toml_not_found: true },
 151
 152             cargo_autoreload: true,
 153             cargo: CargoConfig::default(),
 154             rustfmt: RustfmtConfig::Rustfmt { extra_args: Vec::new() },
 155             flycheck: Some(FlycheckConfig::CargoCommand {
 156                 command: "check".to_string(),
 157                 target_triple: None,
 158                 no_default_features: false,
 159                 all_targets: true,
 160                 all_features: false,
 161                 extra_args: Vec::new(),
 162                 features: Vec::new(),
 163             }),
 164
 165             inlay_hints: InlayHintsConfig {
 166                 type_hints: true,
 167                 parameter_hints: true,
 168                 chaining_hints: true,
 169                 max_length: None,
 170             },
 171             completion: CompletionConfig {
 172                 enable_postfix_completions: true,
 173                 add_call_parenthesis: true,
 174                 add_call_argument_snippets: true,
 175                 ..CompletionConfig::default()
 176             },
 177             assist: AssistConfig::default(),
 178             call_info_full: true,
 179             lens: LensConfig::default(),
 180             hover: HoverConfig::default(),
 181             linked_projects: Vec::new(),
 182             root_path,
 183         }
 184     }
 185
 186     pub fn update(&mut self, json: serde_json::Value) {
 187         log::info!("Config::update({:#})", json);
 188
 189         if json.is_null() || json.as_object().map_or(false, |it| it.is_empty()) {
 190             return;
 191         }
 192
 193         let data = ConfigData::from_json(json);
 194
 195         self.with_sysroot = data.withSysroot;
 196         self.publish_diagnostics = data.diagnostics_enable;
 197         self.diagnostics = DiagnosticsConfig {
 198             disable_experimental: !data.diagnostics_enableExperimental,
 199             disabled: data.diagnostics_disabled,
 200         };
 201         self.diagnostics_map = DiagnosticsMapConfig {
 202             warnings_as_info: data.diagnostics_warningsAsInfo,
 203             warnings_as_hint: data.diagnostics_warningsAsHint,
 204         };
 205         self.lru_capacity = data.lruCapacity;
 206         self.files.watcher = match data.files_watcher.as_str() {
 207             "notify" => FilesWatcher::Notify,
 208             "client" | _ => FilesWatcher::Client,
 209         };
 210         self.notifications =
 211             NotificationsConfig { cargo_toml_not_found: data.notifications_cargoTomlNotFound };
 212         self.cargo_autoreload = data.cargo_autoreload;
 213         self.cargo = CargoConfig {
 214             no_default_features: data.cargo_noDefaultFeatures,
 215             all_features: data.cargo_allFeatures,
 216             features: data.cargo_features.clone(),
 217             load_out_dirs_from_check: data.cargo_loadOutDirsFromCheck,
 218             target: data.cargo_target.clone(),
 219         };
 220
 221         self.proc_macro_srv = if data.procMacro_enable {
 222             std::env::current_exe().ok().map(|path| (path, vec!["proc-macro".into()]))
 223         } else {
 224             None
 225         };
 226
 227         self.rustfmt = match data.rustfmt_overrideCommand {
 228             Some(mut args) if !args.is_empty() => {
 229                 let command = args.remove(0);
 230                 RustfmtConfig::CustomCommand { command, args }
 231             }
 232             Some(_) | None => RustfmtConfig::Rustfmt { extra_args: data.rustfmt_extraArgs },
 233         };
 234
 235         self.flycheck = if data.checkOnSave_enable {
 236             let flycheck_config = match data.checkOnSave_overrideCommand {
 237                 Some(mut args) if !args.is_empty() => {
 238                     let command = args.remove(0);
 239                     FlycheckConfig::CustomCommand { command, args }
 240                 }
 241                 Some(_) | None => FlycheckConfig::CargoCommand {
 242                     command: data.checkOnSave_command,
 243                     target_triple: data.checkOnSave_target.or(data.cargo_target),
 244                     all_targets: data.checkOnSave_allTargets,
 245                     no_default_features: data
 246                         .checkOnSave_noDefaultFeatures
 247                         .unwrap_or(data.cargo_noDefaultFeatures),
 248                     all_features: data.checkOnSave_allFeatures.unwrap_or(data.cargo_allFeatures),
 249                     features: data.checkOnSave_features.unwrap_or(data.cargo_features),
 250                     extra_args: data.checkOnSave_extraArgs,
 251                 },
 252             };
 253             Some(flycheck_config)
 254         } else {
 255             None
 256         };
 257
 258         self.inlay_hints = InlayHintsConfig {
 259             type_hints: data.inlayHints_typeHints,
 260             parameter_hints: data.inlayHints_parameterHints,
 261             chaining_hints: data.inlayHints_chainingHints,
 262             max_length: data.inlayHints_maxLength,
 263         };
 264
 265         self.completion.enable_postfix_completions = data.completion_postfix_enable;
 266         self.completion.add_call_parenthesis = data.completion_addCallParenthesis;
 267         self.completion.add_call_argument_snippets = data.completion_addCallArgumentSnippets;
 268
 269         self.assist.insert_use.merge = match data.assist_importMergeBehaviour {
 270             MergeBehaviourDef::None => None,
 271             MergeBehaviourDef::Full => Some(MergeBehaviour::Full),
 272             MergeBehaviourDef::Last => Some(MergeBehaviour::Last),
 273         };
 274
 275         self.call_info_full = data.callInfo_full;
 276
 277         self.lens = LensConfig {
 278             run: data.lens_enable && data.lens_run,
 279             debug: data.lens_enable && data.lens_debug,
 280             implementations: data.lens_enable && data.lens_implementations,
 281         };
 282
 283         if !data.linkedProjects.is_empty() {
 284             self.linked_projects.clear();
 285             for linked_project in data.linkedProjects {
 286                 let linked_project = match linked_project {
 287                     ManifestOrProjectJson::Manifest(it) => {
 288                         let path = self.root_path.join(it);
 289                         match ProjectManifest::from_manifest_file(path) {
 290                             Ok(it) => it.into(),
 291                             Err(_) => continue,
 292                         }
 293                     }
 294                     ManifestOrProjectJson::ProjectJson(it) => {
 295                         ProjectJson::new(&self.root_path, it).into()
 296                     }
 297                 };
 298                 self.linked_projects.push(linked_project);
 299             }
 300         }
 301
 302         self.hover = HoverConfig {
 303             implementations: data.hoverActions_enable && data.hoverActions_implementations,
 304             run: data.hoverActions_enable && data.hoverActions_run,
 305             debug: data.hoverActions_enable && data.hoverActions_debug,
 306             goto_type_def: data.hoverActions_enable && data.hoverActions_gotoTypeDef,
 307         };
 308
 309         log::info!("Config::update() = {:#?}", self);
 310     }
 311
 312     pub fn update_caps(&mut self, caps: &ClientCapabilities) {
 313         if let Some(doc_caps) = caps.text_document.as_ref() {
 314             if let Some(value) = doc_caps.definition.as_ref().and_then(|it| it.link_support) {
 315                 self.client_caps.location_link = value;
 316             }
 317             if let Some(value) = doc_caps.folding_range.as_ref().and_then(|it| it.line_folding_only)
 318             {
 319                 self.client_caps.line_folding_only = value
 320             }
 321             if let Some(value) = doc_caps
 322                 .document_symbol
 323                 .as_ref()
 324                 .and_then(|it| it.hierarchical_document_symbol_support)
 325             {
 326                 self.client_caps.hierarchical_symbols = value
 327             }
 328             if let Some(value) =
 329                 doc_caps.code_action.as_ref().map(|it| it.code_action_literal_support.is_some())
 330             {
 331                 self.client_caps.code_action_literals = value;
 332             }
 333             if let Some(value) = doc_caps
 334                 .signature_help
 335                 .as_ref()
 336                 .and_then(|it| it.signature_information.as_ref())
 337                 .and_then(|it| it.parameter_information.as_ref())
 338                 .and_then(|it| it.label_offset_support)
 339             {
 340                 self.client_caps.signature_help_label_offsets = value;
 341             }
 342
 343             self.completion.allow_snippets(false);
 344             if let Some(completion) = &doc_caps.completion {
 345                 if let Some(completion_item) = &completion.completion_item {
 346                     if let Some(value) = completion_item.snippet_support {
 347                         self.completion.allow_snippets(value);
 348                     }
 349                 }
 350             }
 351         }
 352
 353         if let Some(window_caps) = caps.window.as_ref() {
 354             if let Some(value) = window_caps.work_done_progress {
 355                 self.client_caps.work_done_progress = value;
 356             }
 357         }
 358
 359         self.assist.allow_snippets(false);
 360         if let Some(experimental) = &caps.experimental {
 361             let get_bool =
 362                 |index: &str| experimental.get(index).and_then(|it| it.as_bool()) == Some(true);
 363
 364             let snippet_text_edit = get_bool("snippetTextEdit");
 365             self.assist.allow_snippets(snippet_text_edit);
 366
 367             self.client_caps.code_action_group = get_bool("codeActionGroup");
 368             self.client_caps.resolve_code_action = get_bool("resolveCodeAction");
 369             self.client_caps.hover_actions = get_bool("hoverActions");
 370             self.client_caps.status_notification = get_bool("statusNotification");
 371         }
 372     }
 373 }
 374
 375 #[derive(Deserialize)]
 376 #[serde(untagged)]
 377 enum ManifestOrProjectJson {
 378     Manifest(PathBuf),
 379     ProjectJson(ProjectJsonData),
 380 }
 381
 382 #[derive(Deserialize)]
 383 #[serde(rename_all = "lowercase")]
 384 enum MergeBehaviourDef {
 385     None,
 386     Full,
 387     Last,
 388 }
 389
 390 macro_rules! config_data {
 391     (struct $name:ident { $($field:ident: $ty:ty = $default:expr,)*}) => {
 392         #[allow(non_snake_case)]
 393         struct $name { $($field: $ty,)* }
 394         impl $name {
 395             fn from_json(mut json: serde_json::Value) -> $name {
 396                 $name {$(
 397                     $field: {
 398                         let pointer = stringify!($field).replace('_', "/");
 399                         let pointer = format!("/{}", pointer);
 400                         json.pointer_mut(&pointer)
 401                             .and_then(|it| serde_json::from_value(it.take()).ok())
 402                             .unwrap_or($default)
 403                     },
 404                 )*}
 405             }
 406         }
 407
 408     };
 409 }
 410
 411 config_data! {
 412     struct ConfigData {
 413         assist_importMergeBehaviour: MergeBehaviourDef = MergeBehaviourDef::None,
 414
 415         callInfo_full: bool = true,
 416
 417         cargo_autoreload: bool           = true,
 418         cargo_allFeatures: bool          = false,
 419         cargo_features: Vec<String>      = Vec::new(),
 420         cargo_loadOutDirsFromCheck: bool = false,
 421         cargo_noDefaultFeatures: bool    = false,
 422         cargo_target: Option<String>     = None,
 423
 424         checkOnSave_enable: bool                         = true,
 425         checkOnSave_allFeatures: Option<bool>            = None,
 426         checkOnSave_allTargets: bool                     = true,
 427         checkOnSave_command: String                      = "check".into(),
 428         checkOnSave_noDefaultFeatures: Option<bool>      = None,
 429         checkOnSave_target: Option<String>               = None,
 430         checkOnSave_extraArgs: Vec<String>               = Vec::new(),
 431         checkOnSave_features: Option<Vec<String>>        = None,
 432         checkOnSave_overrideCommand: Option<Vec<String>> = None,
 433
 434         completion_addCallArgumentSnippets: bool = true,
 435         completion_addCallParenthesis: bool      = true,
 436         completion_postfix_enable: bool          = true,
 437
 438         diagnostics_enable: bool                = true,
 439         diagnostics_enableExperimental: bool    = true,
 440         diagnostics_disabled: FxHashSet<String> = FxHashSet::default(),
 441         diagnostics_warningsAsHint: Vec<String> = Vec::new(),
 442         diagnostics_warningsAsInfo: Vec<String> = Vec::new(),
 443
 444         files_watcher: String = "client".into(),
 445
 446         hoverActions_debug: bool           = true,
 447         hoverActions_enable: bool          = true,
 448         hoverActions_gotoTypeDef: bool     = true,
 449         hoverActions_implementations: bool = true,
 450         hoverActions_run: bool             = true,
 451
 452         inlayHints_chainingHints: bool      = true,
 453         inlayHints_maxLength: Option<usize> = None,
 454         inlayHints_parameterHints: bool     = true,
 455         inlayHints_typeHints: bool          = true,
 456
 457         lens_debug: bool           = true,
 458         lens_enable: bool          = true,
 459         lens_implementations: bool = true,
 460         lens_run: bool             = true,
 461
 462         linkedProjects: Vec<ManifestOrProjectJson> = Vec::new(),
 463         lruCapacity: Option<usize>                 = None,
 464         notifications_cargoTomlNotFound: bool      = true,
 465         procMacro_enable: bool                     = false,
 466
 467         rustfmt_extraArgs: Vec<String>               = Vec::new(),
 468         rustfmt_overrideCommand: Option<Vec<String>> = None,
 469
 470         withSysroot: bool = true,
 471     }
 472 }