1 //! See [`NavigationTarget`].
7 symbols::FileSymbol, AssocItem, Documentation, FieldSource, HasAttrs, HasSource, HirDisplay,
8 InFile, ModuleSource, Semantics,
11 base_db::{FileId, FileRange},
14 use ide_db::{defs::Definition, RootDatabase};
18 match_ast, AstNode, SmolStr, SyntaxNode, TextRange,
21 /// `NavigationTarget` represents an element in the editor's UI which you can
22 /// click on to navigate to a particular piece of code.
24 /// Typically, a `NavigationTarget` corresponds to some element in the source
25 /// code, like a function or a struct, but this is not strictly required.
26 #[derive(Clone, PartialEq, Eq, Hash)]
27 pub struct NavigationTarget {
29 /// Range which encompasses the whole element.
31 /// Should include body, doc comments, attributes, etc.
33 /// Clients should use this range to answer "is the cursor inside the
34 /// element?" question.
35 pub full_range: TextRange,
36 /// A "most interesting" range within the `full_range`.
38 /// Typically, `full_range` is the whole syntax node, including doc
39 /// comments, and `focus_range` is the range of the identifier.
41 /// Clients should place the cursor on this range when navigating to this target.
42 pub focus_range: Option<TextRange>,
44 pub kind: Option<SymbolKind>,
45 pub container_name: Option<SmolStr>,
46 pub description: Option<String>,
47 pub docs: Option<Documentation>,
50 impl fmt::Debug for NavigationTarget {
51 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
52 let mut f = f.debug_struct("NavigationTarget");
54 ($($name:ident)*) => {$(
55 if let Some(it) = &self.$name {
56 f.field(stringify!($name), it);
60 f.field("file_id", &self.file_id).field("full_range", &self.full_range);
62 f.field("name", &self.name);
63 opt!(kind container_name description docs);
68 pub(crate) trait ToNav {
69 fn to_nav(&self, db: &RootDatabase) -> NavigationTarget;
72 pub(crate) trait TryToNav {
73 fn try_to_nav(&self, db: &RootDatabase) -> Option<NavigationTarget>;
76 impl<T: TryToNav, U: TryToNav> TryToNav for Either<T, U> {
77 fn try_to_nav(&self, db: &RootDatabase) -> Option<NavigationTarget> {
79 Either::Left(it) => it.try_to_nav(db),
80 Either::Right(it) => it.try_to_nav(db),
85 impl NavigationTarget {
86 pub fn focus_or_full_range(&self) -> TextRange {
87 self.focus_range.unwrap_or(self.full_range)
90 pub(crate) fn from_module_to_decl(db: &RootDatabase, module: hir::Module) -> NavigationTarget {
91 let name = module.name(db).map(|it| it.to_smol_str()).unwrap_or_default();
92 if let Some(src @ InFile { value, .. }) = &module.declaration_source(db) {
93 let FileRange { file_id, range: full_range } = src.syntax().original_file_range(db);
95 value.name().and_then(|it| orig_focus_range(db, src.file_id, it.syntax()));
96 let mut res = NavigationTarget::from_syntax(
103 res.docs = module.attrs(db).docs();
104 res.description = Some(module.display(db).to_string());
111 pub(crate) fn debug_render(&self) -> String {
112 let mut buf = format!(
119 if let Some(focus_range) = self.focus_range {
120 buf.push_str(&format!(" {:?}", focus_range))
122 if let Some(container_name) = &self.container_name {
123 buf.push_str(&format!(" {}", container_name))
128 /// Allows `NavigationTarget` to be created from a `NameOwner`
129 pub(crate) fn from_named(
131 node @ InFile { file_id, value }: InFile<&dyn ast::HasName>,
133 ) -> NavigationTarget {
134 let name = value.name().map(|it| it.text().into()).unwrap_or_else(|| "_".into());
135 let focus_range = value.name().and_then(|it| orig_focus_range(db, file_id, it.syntax()));
136 let FileRange { file_id, range } = node.map(|it| it.syntax()).original_file_range(db);
138 NavigationTarget::from_syntax(file_id, name, focus_range, range, kind)
144 focus_range: Option<TextRange>,
145 full_range: TextRange,
147 ) -> NavigationTarget {
154 container_name: None,
161 impl TryToNav for FileSymbol {
162 fn try_to_nav(&self, db: &RootDatabase) -> Option<NavigationTarget> {
163 let full_range = self.loc.original_range(db)?;
164 let name_range = self.loc.original_name_range(db)?;
166 Some(NavigationTarget {
167 file_id: full_range.file_id,
168 name: self.name.clone(),
169 kind: Some(self.kind.into()),
170 full_range: full_range.range,
171 focus_range: Some(name_range.range),
172 container_name: self.container_name.clone(),
173 description: description_from_symbol(db, self),
179 impl TryToNav for Definition {
180 fn try_to_nav(&self, db: &RootDatabase) -> Option<NavigationTarget> {
182 Definition::Local(it) => Some(it.to_nav(db)),
183 Definition::Label(it) => Some(it.to_nav(db)),
184 Definition::Module(it) => Some(it.to_nav(db)),
185 Definition::Macro(it) => it.try_to_nav(db),
186 Definition::Field(it) => it.try_to_nav(db),
187 Definition::SelfType(it) => it.try_to_nav(db),
188 Definition::GenericParam(it) => it.try_to_nav(db),
189 Definition::Function(it) => it.try_to_nav(db),
190 Definition::Adt(it) => it.try_to_nav(db),
191 Definition::Variant(it) => it.try_to_nav(db),
192 Definition::Const(it) => it.try_to_nav(db),
193 Definition::Static(it) => it.try_to_nav(db),
194 Definition::Trait(it) => it.try_to_nav(db),
195 Definition::TypeAlias(it) => it.try_to_nav(db),
196 Definition::BuiltinType(_) => None,
197 Definition::ToolModule(_) => None,
198 Definition::BuiltinAttr(_) => None,
199 // FIXME: The focus range should be set to the helper declaration
200 Definition::DeriveHelper(it) => it.derive().try_to_nav(db),
205 impl TryToNav for hir::ModuleDef {
206 fn try_to_nav(&self, db: &RootDatabase) -> Option<NavigationTarget> {
208 hir::ModuleDef::Module(it) => Some(it.to_nav(db)),
209 hir::ModuleDef::Function(it) => it.try_to_nav(db),
210 hir::ModuleDef::Adt(it) => it.try_to_nav(db),
211 hir::ModuleDef::Variant(it) => it.try_to_nav(db),
212 hir::ModuleDef::Const(it) => it.try_to_nav(db),
213 hir::ModuleDef::Static(it) => it.try_to_nav(db),
214 hir::ModuleDef::Trait(it) => it.try_to_nav(db),
215 hir::ModuleDef::TypeAlias(it) => it.try_to_nav(db),
216 hir::ModuleDef::Macro(it) => it.try_to_nav(db),
217 hir::ModuleDef::BuiltinType(_) => None,
222 pub(crate) trait ToNavFromAst {
223 const KIND: SymbolKind;
225 impl ToNavFromAst for hir::Function {
226 const KIND: SymbolKind = SymbolKind::Function;
228 impl ToNavFromAst for hir::Const {
229 const KIND: SymbolKind = SymbolKind::Const;
231 impl ToNavFromAst for hir::Static {
232 const KIND: SymbolKind = SymbolKind::Static;
234 impl ToNavFromAst for hir::Struct {
235 const KIND: SymbolKind = SymbolKind::Struct;
237 impl ToNavFromAst for hir::Enum {
238 const KIND: SymbolKind = SymbolKind::Enum;
240 impl ToNavFromAst for hir::Variant {
241 const KIND: SymbolKind = SymbolKind::Variant;
243 impl ToNavFromAst for hir::Union {
244 const KIND: SymbolKind = SymbolKind::Union;
246 impl ToNavFromAst for hir::TypeAlias {
247 const KIND: SymbolKind = SymbolKind::TypeAlias;
249 impl ToNavFromAst for hir::Trait {
250 const KIND: SymbolKind = SymbolKind::Trait;
253 impl<D> TryToNav for D
255 D: HasSource + ToNavFromAst + Copy + HasAttrs + HirDisplay,
256 D::Ast: ast::HasName,
258 fn try_to_nav(&self, db: &RootDatabase) -> Option<NavigationTarget> {
259 let src = self.source(db)?;
260 let mut res = NavigationTarget::from_named(
262 src.as_ref().map(|it| it as &dyn ast::HasName),
265 res.docs = self.docs(db);
266 res.description = Some(self.display(db).to_string());
271 impl ToNav for hir::Module {
272 fn to_nav(&self, db: &RootDatabase) -> NavigationTarget {
273 let InFile { file_id, value } = self.definition_source(db);
275 let name = self.name(db).map(|it| it.to_smol_str()).unwrap_or_default();
276 let (syntax, focus) = match &value {
277 ModuleSource::SourceFile(node) => (node.syntax(), None),
278 ModuleSource::Module(node) => (
280 node.name().and_then(|it| orig_focus_range(db, file_id, it.syntax())),
282 ModuleSource::BlockExpr(node) => (node.syntax(), None),
284 let FileRange { file_id, range: full_range } =
285 InFile::new(file_id, syntax).original_file_range(db);
286 NavigationTarget::from_syntax(file_id, name, focus, full_range, SymbolKind::Module)
290 impl TryToNav for hir::Impl {
291 fn try_to_nav(&self, db: &RootDatabase) -> Option<NavigationTarget> {
292 let InFile { file_id, value } = self.source(db)?;
293 let derive_attr = self.is_builtin_derive(db);
295 let focus_range = if derive_attr.is_some() {
298 value.self_ty().and_then(|ty| orig_focus_range(db, file_id, ty.syntax()))
301 let FileRange { file_id, range: full_range } = match &derive_attr {
302 Some(attr) => attr.syntax().original_file_range(db),
303 None => InFile::new(file_id, value.syntax()).original_file_range(db),
306 Some(NavigationTarget::from_syntax(
316 impl TryToNav for hir::Field {
317 fn try_to_nav(&self, db: &RootDatabase) -> Option<NavigationTarget> {
318 let src = self.source(db)?;
320 let field_source = match &src.value {
321 FieldSource::Named(it) => {
323 NavigationTarget::from_named(db, src.with_value(it), SymbolKind::Field);
324 res.docs = self.docs(db);
325 res.description = Some(self.display(db).to_string());
328 FieldSource::Pos(it) => {
329 let FileRange { file_id, range } =
330 src.with_value(it.syntax()).original_file_range(db);
331 NavigationTarget::from_syntax(file_id, "".into(), None, range, SymbolKind::Field)
338 impl TryToNav for hir::Macro {
339 fn try_to_nav(&self, db: &RootDatabase) -> Option<NavigationTarget> {
340 let src = self.source(db)?;
341 let name_owner: &dyn ast::HasName = match &src.value {
342 Either::Left(it) => it,
343 Either::Right(it) => it,
345 let mut res = NavigationTarget::from_named(
347 src.as_ref().with_value(name_owner),
348 self.kind(db).into(),
350 res.docs = self.docs(db);
355 impl TryToNav for hir::Adt {
356 fn try_to_nav(&self, db: &RootDatabase) -> Option<NavigationTarget> {
358 hir::Adt::Struct(it) => it.try_to_nav(db),
359 hir::Adt::Union(it) => it.try_to_nav(db),
360 hir::Adt::Enum(it) => it.try_to_nav(db),
365 impl TryToNav for hir::AssocItem {
366 fn try_to_nav(&self, db: &RootDatabase) -> Option<NavigationTarget> {
368 AssocItem::Function(it) => it.try_to_nav(db),
369 AssocItem::Const(it) => it.try_to_nav(db),
370 AssocItem::TypeAlias(it) => it.try_to_nav(db),
375 impl TryToNav for hir::GenericParam {
376 fn try_to_nav(&self, db: &RootDatabase) -> Option<NavigationTarget> {
378 hir::GenericParam::TypeParam(it) => it.try_to_nav(db),
379 hir::GenericParam::ConstParam(it) => it.try_to_nav(db),
380 hir::GenericParam::LifetimeParam(it) => it.try_to_nav(db),
385 impl ToNav for hir::Local {
386 fn to_nav(&self, db: &RootDatabase) -> NavigationTarget {
387 let InFile { file_id, value } = self.source(db);
388 let (node, name) = match &value {
389 Either::Left(bind_pat) => (bind_pat.syntax(), bind_pat.name()),
390 Either::Right(it) => (it.syntax(), it.name()),
392 let focus_range = name.and_then(|it| orig_focus_range(db, file_id, it.syntax()));
393 let FileRange { file_id, range: full_range } =
394 InFile::new(file_id, node).original_file_range(db);
396 let name = self.name(db).to_smol_str();
397 let kind = if self.is_self(db) {
398 SymbolKind::SelfParam
399 } else if self.is_param(db) {
400 SymbolKind::ValueParam
410 container_name: None,
417 impl ToNav for hir::Label {
418 fn to_nav(&self, db: &RootDatabase) -> NavigationTarget {
419 let InFile { file_id, value } = self.source(db);
420 let name = self.name(db).to_smol_str();
422 let range = |syntax: &_| InFile::new(file_id, syntax).original_file_range(db);
423 let FileRange { file_id, range: full_range } = range(value.syntax());
424 let focus_range = value.lifetime().map(|lt| range(lt.syntax()).range);
429 kind: Some(SymbolKind::Label),
432 container_name: None,
439 impl TryToNav for hir::TypeParam {
440 fn try_to_nav(&self, db: &RootDatabase) -> Option<NavigationTarget> {
441 let InFile { file_id, value } = self.merge().source(db)?;
442 let name = self.name(db).to_smol_str();
444 let value = match value {
445 Either::Left(ast::TypeOrConstParam::Type(x)) => Either::Left(x),
446 Either::Left(ast::TypeOrConstParam::Const(_)) => {
450 Either::Right(x) => Either::Right(x),
453 let range = |syntax: &_| InFile::new(file_id, syntax).original_file_range(db);
454 let focus_range = |syntax: &_| InFile::new(file_id, syntax).original_file_range_opt(db);
455 let FileRange { file_id, range: full_range } = match &value {
456 Either::Left(type_param) => range(type_param.syntax()),
457 Either::Right(trait_) => trait_
459 .and_then(|name| focus_range(name.syntax()))
460 .unwrap_or_else(|| range(trait_.syntax())),
462 let focus_range = value
463 .either(|it| it.name(), |it| it.name())
464 .and_then(|it| focus_range(it.syntax()))
466 Some(NavigationTarget {
469 kind: Some(SymbolKind::TypeParam),
472 container_name: None,
479 impl TryToNav for hir::TypeOrConstParam {
480 fn try_to_nav(&self, db: &RootDatabase) -> Option<NavigationTarget> {
481 self.split(db).try_to_nav(db)
485 impl TryToNav for hir::LifetimeParam {
486 fn try_to_nav(&self, db: &RootDatabase) -> Option<NavigationTarget> {
487 let InFile { file_id, value } = self.source(db)?;
488 let name = self.name(db).to_smol_str();
490 let FileRange { file_id, range: full_range } =
491 InFile::new(file_id, value.syntax()).original_file_range(db);
492 Some(NavigationTarget {
495 kind: Some(SymbolKind::LifetimeParam),
497 focus_range: Some(full_range),
498 container_name: None,
505 impl TryToNav for hir::ConstParam {
506 fn try_to_nav(&self, db: &RootDatabase) -> Option<NavigationTarget> {
507 let InFile { file_id, value } = self.merge().source(db)?;
508 let name = self.name(db).to_smol_str();
510 let value = match value {
511 Either::Left(ast::TypeOrConstParam::Const(x)) => x,
518 let focus_range = value.name().and_then(|it| orig_focus_range(db, file_id, it.syntax()));
519 let FileRange { file_id, range: full_range } =
520 InFile::new(file_id, value.syntax()).original_file_range(db);
521 Some(NavigationTarget {
524 kind: Some(SymbolKind::ConstParam),
527 container_name: None,
534 /// Get a description of a symbol.
536 /// e.g. `struct Name`, `enum Name`, `fn Name`
537 pub(crate) fn description_from_symbol(db: &RootDatabase, symbol: &FileSymbol) -> Option<String> {
538 let sema = Semantics::new(db);
539 let node = symbol.loc.syntax(&sema)?;
543 ast::Fn(it) => sema.to_def(&it).map(|it| it.display(db).to_string()),
544 ast::Struct(it) => sema.to_def(&it).map(|it| it.display(db).to_string()),
545 ast::Enum(it) => sema.to_def(&it).map(|it| it.display(db).to_string()),
546 ast::Trait(it) => sema.to_def(&it).map(|it| it.display(db).to_string()),
547 ast::Module(it) => sema.to_def(&it).map(|it| it.display(db).to_string()),
548 ast::TypeAlias(it) => sema.to_def(&it).map(|it| it.display(db).to_string()),
549 ast::Const(it) => sema.to_def(&it).map(|it| it.display(db).to_string()),
550 ast::Static(it) => sema.to_def(&it).map(|it| it.display(db).to_string()),
551 ast::RecordField(it) => sema.to_def(&it).map(|it| it.display(db).to_string()),
552 ast::Variant(it) => sema.to_def(&it).map(|it| it.display(db).to_string()),
553 ast::Union(it) => sema.to_def(&it).map(|it| it.display(db).to_string()),
561 file_id: hir::HirFileId,
563 ) -> Option<TextRange> {
564 InFile::new(file_id, syntax).original_file_range_opt(db).map(|it| it.range)
569 use expect_test::expect;
571 use crate::{fixture, Query};
574 fn test_nav_for_symbol() {
575 let (analysis, _) = fixture::file(
578 fn foo() { enum FooInner { } }
582 let navs = analysis.symbol_search(Query::new("FooInner".to_string())).unwrap();
593 description: "enum FooInner",
603 container_name: "foo",
604 description: "enum FooInner",
608 .assert_debug_eq(&navs);
612 fn test_world_symbols_are_case_sensitive() {
613 let (analysis, _) = fixture::file(
620 let navs = analysis.symbol_search(Query::new("foo".to_string())).unwrap();
621 assert_eq!(navs.len(), 2)