105 lines
3.0 KiB
Rust
105 lines
3.0 KiB
Rust
//! FIXME: write short doc here
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use ra_db::{CrateId, FileId, FilePosition};
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use crate::{db::RootDatabase, NavigationTarget};
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/// This returns `Vec` because a module may be included from several places. We
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/// don't handle this case yet though, so the Vec has length at most one.
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pub(crate) fn parent_module(db: &RootDatabase, position: FilePosition) -> Vec<NavigationTarget> {
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let src = hir::ModuleSource::from_position(db, position);
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let module = match hir::Module::from_definition(
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db,
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hir::Source { file_id: position.file_id.into(), value: src },
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) {
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None => return Vec::new(),
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Some(it) => it,
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};
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let nav = NavigationTarget::from_module_to_decl(db, module);
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vec![nav]
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}
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/// Returns `Vec` for the same reason as `parent_module`
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pub(crate) fn crate_for(db: &RootDatabase, file_id: FileId) -> Vec<CrateId> {
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let src = hir::ModuleSource::from_file_id(db, file_id);
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let module =
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match hir::Module::from_definition(db, hir::Source { file_id: file_id.into(), value: src })
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{
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Some(it) => it,
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None => return Vec::new(),
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};
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let krate = module.krate();
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vec![krate.crate_id()]
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}
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#[cfg(test)]
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mod tests {
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use ra_cfg::CfgOptions;
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use ra_db::Env;
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use crate::{
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mock_analysis::{analysis_and_position, MockAnalysis},
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AnalysisChange, CrateGraph,
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Edition::Edition2018,
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};
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#[test]
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fn test_resolve_parent_module() {
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let (analysis, pos) = analysis_and_position(
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"
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//- /lib.rs
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mod foo;
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//- /foo.rs
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<|>// empty
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",
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);
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let nav = analysis.parent_module(pos).unwrap().pop().unwrap();
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nav.assert_match("foo MODULE FileId(1) [0; 8)");
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}
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#[test]
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fn test_resolve_parent_module_for_inline() {
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let (analysis, pos) = analysis_and_position(
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"
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//- /lib.rs
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mod foo {
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mod bar {
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mod baz { <|> }
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}
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}
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",
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);
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let nav = analysis.parent_module(pos).unwrap().pop().unwrap();
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nav.assert_match("baz MODULE FileId(1) [32; 44)");
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}
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#[test]
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fn test_resolve_crate_root() {
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let mock = MockAnalysis::with_files(
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"
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//- /bar.rs
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mod foo;
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//- /foo.rs
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// empty <|>
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",
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);
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let root_file = mock.id_of("/bar.rs");
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let mod_file = mock.id_of("/foo.rs");
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let mut host = mock.analysis_host();
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assert!(host.analysis().crate_for(mod_file).unwrap().is_empty());
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let mut crate_graph = CrateGraph::default();
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let crate_id = crate_graph.add_crate_root(
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root_file,
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Edition2018,
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CfgOptions::default(),
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Env::default(),
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);
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let mut change = AnalysisChange::new();
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change.set_crate_graph(crate_graph);
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host.apply_change(change);
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assert_eq!(host.analysis().crate_for(mod_file).unwrap(), vec![crate_id]);
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}
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}
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