1 use hir::{Impl, Semantics};
3 defs::{Definition, NameClass, NameRefClass},
6 use syntax::{ast, AstNode};
8 use crate::{display::TryToNav, FilePosition, NavigationTarget, RangeInfo};
10 // Feature: Go to Implementation
12 // Navigates to the impl block of structs, enums or traits. Also implemented as a code lens.
15 // | Editor | Shortcut
17 // | VS Code | kbd:[Ctrl+F12]
19 pub(crate) fn goto_implementation(
21 position: FilePosition,
22 ) -> Option<RangeInfo<Vec<NavigationTarget>>> {
23 let sema = Semantics::new(db);
24 let source_file = sema.parse(position.file_id);
25 let syntax = source_file.syntax().clone();
27 let node = sema.find_node_at_offset_with_descend(&syntax, position.offset)?;
28 let def = match &node {
29 ast::NameLike::Name(name) => {
30 NameClass::classify(&sema, name).map(|class| class.referenced_or_defined(sema.db))
32 ast::NameLike::NameRef(name_ref) => {
33 NameRefClass::classify(&sema, name_ref).map(|class| class.referenced(sema.db))
35 ast::NameLike::Lifetime(_) => None,
38 Definition::ModuleDef(def) => def,
41 let navs = match def {
42 hir::ModuleDef::Trait(trait_) => impls_for_trait(&sema, trait_),
43 hir::ModuleDef::Adt(adt) => impls_for_ty(&sema, adt.ty(sema.db)),
44 hir::ModuleDef::TypeAlias(alias) => impls_for_ty(&sema, alias.ty(sema.db)),
45 hir::ModuleDef::BuiltinType(builtin) => {
46 let module = sema.to_module_def(position.file_id)?;
47 impls_for_ty(&sema, builtin.ty(sema.db, module))
51 Some(RangeInfo { range: node.syntax().text_range(), info: navs })
54 fn impls_for_ty(sema: &Semantics<RootDatabase>, ty: hir::Type) -> Vec<NavigationTarget> {
55 Impl::all_for_type(sema.db, ty).into_iter().filter_map(|imp| imp.try_to_nav(sema.db)).collect()
58 fn impls_for_trait(sema: &Semantics<RootDatabase>, trait_: hir::Trait) -> Vec<NavigationTarget> {
59 Impl::all_for_trait(sema.db, trait_)
61 .filter_map(|imp| imp.try_to_nav(sema.db))
67 use ide_db::base_db::FileRange;
71 fn check(ra_fixture: &str) {
72 let (analysis, position, annotations) = fixture::annotations(ra_fixture);
74 let navs = analysis.goto_implementation(position).unwrap().unwrap().info;
76 let key = |frange: &FileRange| (frange.file_id, frange.range.start());
78 let mut expected = annotations
80 .map(|(range, data)| {
81 assert!(data.is_empty());
85 expected.sort_by_key(key);
89 .map(|nav| FileRange { file_id: nav.file_id, range: nav.focus_or_full_range() })
91 actual.sort_by_key(key);
93 assert_eq!(expected, actual);
97 fn goto_implementation_works() {
108 fn goto_implementation_works_multiple_blocks() {
121 fn goto_implementation_works_multiple_mods() {
138 fn goto_implementation_works_multiple_files() {
156 fn goto_implementation_for_trait() {
168 fn goto_implementation_for_trait_multiple_files() {
177 impl crate::T for crate::Foo {}
180 impl crate::T for crate::Foo {}
187 fn goto_implementation_all_impls() {
204 fn goto_implementation_to_builtin_derive() {
214 #[rustc_builtin_macro]
221 fn goto_implementation_type_alias() {
237 fn goto_implementation_adt_generic() {
251 fn goto_implementation_builtin() {
254 //- /lib.rs crate:main deps:core
255 fn foo(_: bool$0) {{}}
256 //- /libcore.rs crate:core