1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
use ra_db::{CrateId, FileId, FilePosition};
use crate::{db::RootDatabase, NavigationTarget};
/// 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) -> Vec<NavigationTarget> {
let module = match hir::source_binder::module_from_position(db, position) {
None => return Vec::new(),
Some(it) => it,
};
let nav = NavigationTarget::from_module_to_decl(db, module);
vec![nav]
}
/// Returns `Vec` for the same reason as `parent_module`
pub(crate) fn crate_for(db: &RootDatabase, file_id: FileId) -> Vec<CrateId> {
let module = match hir::source_binder::module_from_file_id(db, file_id) {
Some(it) => it,
None => return Vec::new(),
};
let krate = match module.krate(db) {
Some(it) => it,
None => return Vec::new(),
};
vec![krate.crate_id()]
}
#[cfg(test)]
mod tests {
use crate::{
mock_analysis::{analysis_and_position, MockAnalysis},
AnalysisChange, CrateGraph,
Edition::Edition2018,
};
#[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)");
}
#[test]
fn test_resolve_crate_root() {
let mock = MockAnalysis::with_files(
"
//- /bar.rs
mod foo;
//- /foo.rs
// empty <|>
",
);
let root_file = mock.id_of("/bar.rs");
let mod_file = mock.id_of("/foo.rs");
let mut host = mock.analysis_host();
assert!(host.analysis().crate_for(mod_file).unwrap().is_empty());
let mut crate_graph = CrateGraph::default();
let crate_id = crate_graph.add_crate_root(root_file, Edition2018);
let mut change = AnalysisChange::new();
change.set_crate_graph(crate_graph);
host.apply_change(change);
assert_eq!(host.analysis().crate_for(mod_file).unwrap(), vec![crate_id]);
}
}
|
