use ra_db::{Cancelable, FilePosition}; use crate::{NavigationTarget, db::RootDatabase}; /// This returns `Vec` because a module may be included from several places. We /// don't handle this case yet though, so the Vec has length at most one. pub(crate) fn parent_module( db: &RootDatabase, position: FilePosition, ) -> Cancelable> { let module = match hir::source_binder::module_from_position(db, position) { None => return Ok(Vec::new()), Some(it) => it, }; let nav = NavigationTarget::from_module_to_decl(db, module)?; Ok(vec![nav]) } #[cfg(test)] mod tests { use crate::mock_analysis::analysis_and_position; #[test] fn test_resolve_parent_module() { let (analysis, pos) = analysis_and_position( " //- /lib.rs mod foo; //- /foo.rs <|>// empty ", ); let nav = analysis.parent_module(pos).unwrap().pop().unwrap(); nav.assert_match("foo MODULE FileId(1) [0; 8)"); } #[test] fn test_resolve_parent_module_for_inline() { let (analysis, pos) = analysis_and_position( " //- /lib.rs mod foo { mod bar { mod baz { <|> } } } ", ); let nav = analysis.parent_module(pos).unwrap().pop().unwrap(); nav.assert_match("baz MODULE FileId(1) [32; 44)"); } }