1 use hir::{db::DefDatabase, Semantics};
3 base_db::{CrateId, FileId, FileLoader, FilePosition},
6 use itertools::Itertools;
8 algo::find_node_at_offset,
12 use crate::NavigationTarget;
14 // Feature: Parent Module
16 // Navigates to the parent module of the current module.
19 // | Editor | Action Name
21 // | VS Code | **rust-analyzer: Locate parent module**
24 // image::https://user-images.githubusercontent.com/48062697/113065580-04c21800-91b1-11eb-9a32-00086161c0bd.gif[]
26 /// This returns `Vec` because a module may be included from several places.
27 pub(crate) fn parent_module(db: &RootDatabase, position: FilePosition) -> Vec<NavigationTarget> {
28 let sema = Semantics::new(db);
29 let source_file = sema.parse(position.file_id);
31 let mut module = find_node_at_offset::<ast::Module>(source_file.syntax(), position.offset);
33 // If cursor is literally on `mod foo`, go to the grandpa.
34 if let Some(m) = &module {
37 .map_or(false, |it| it.syntax().text_range().contains_inclusive(position.offset))
39 cov_mark::hit!(test_resolve_parent_module_on_module_decl);
40 module = m.syntax().ancestors().skip(1).find_map(ast::Module::cast);
48 .map(|module| NavigationTarget::from_module_to_decl(db, module))
51 .to_module_defs(position.file_id)
52 .map(|module| NavigationTarget::from_module_to_decl(db, module))
57 /// Returns `Vec` for the same reason as `parent_module`
58 pub(crate) fn crates_for(db: &RootDatabase, file_id: FileId) -> Vec<CrateId> {
59 db.relevant_crates(file_id)
62 .filter(|&crate_id| db.crate_def_map(crate_id).modules_for_file(file_id).next().is_some())
69 use ide_db::base_db::FileRange;
73 fn check(ra_fixture: &str) {
74 let (analysis, position, expected) = fixture::annotations(ra_fixture);
75 let navs = analysis.parent_module(position).unwrap();
78 .map(|nav| FileRange { file_id: nav.file_id, range: nav.focus_or_full_range() })
80 assert_eq!(expected.into_iter().map(|(fr, _)| fr).collect::<Vec<_>>(), navs);
84 fn test_resolve_parent_module() {
98 fn test_resolve_parent_module_on_module_decl() {
99 cov_mark::check!(test_resolve_parent_module_on_module_decl);
115 fn test_resolve_parent_module_for_inline() {
129 fn test_resolve_multi_parent_module() {
145 fn test_resolve_crate_root() {
146 let (analysis, file_id) = fixture::file(
154 assert_eq!(analysis.crates_for(file_id).unwrap().len(), 1);
158 fn test_resolve_multi_parent_crate() {
159 let (analysis, file_id) = fixture::file(
163 //- /foo.rs crate:foo
165 //- /bar.rs crate:bar
169 assert_eq!(analysis.crates_for(file_id).unwrap().len(), 2);