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-rw-r--r--crates/ide_diagnostics/src/handlers/unresolved_import.rs90
1 files changed, 90 insertions, 0 deletions
diff --git a/crates/ide_diagnostics/src/handlers/unresolved_import.rs b/crates/ide_diagnostics/src/handlers/unresolved_import.rs
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1use crate::{Diagnostic, DiagnosticsContext};
2
3// Diagnostic: unresolved-import
4//
5// This diagnostic is triggered if rust-analyzer is unable to resolve a path in
6// a `use` declaration.
7pub(crate) fn unresolved_import(
8 ctx: &DiagnosticsContext<'_>,
9 d: &hir::UnresolvedImport,
10) -> Diagnostic {
11 Diagnostic::new(
12 "unresolved-import",
13 "unresolved import",
14 ctx.sema.diagnostics_display_range(d.decl.clone().map(|it| it.into())).range,
15 )
16 // This currently results in false positives in the following cases:
17 // - `cfg_if!`-generated code in libstd (we don't load the sysroot correctly)
18 // - `core::arch` (we don't handle `#[path = "../<path>"]` correctly)
19 // - proc macros and/or proc macro generated code
20 .experimental()
21}
22
23#[cfg(test)]
24mod tests {
25 use crate::tests::check_diagnostics;
26
27 #[test]
28 fn unresolved_import() {
29 check_diagnostics(
30 r#"
31use does_exist;
32use does_not_exist;
33 //^^^^^^^^^^^^^^ unresolved import
34
35mod does_exist {}
36"#,
37 );
38 }
39
40 #[test]
41 fn unresolved_import_in_use_tree() {
42 // Only the relevant part of a nested `use` item should be highlighted.
43 check_diagnostics(
44 r#"
45use does_exist::{Exists, DoesntExist};
46 //^^^^^^^^^^^ unresolved import
47
48use {does_not_exist::*, does_exist};
49 //^^^^^^^^^^^^^^^^^ unresolved import
50
51use does_not_exist::{
52 a,
53 //^ unresolved import
54 b,
55 //^ unresolved import
56 c,
57 //^ unresolved import
58};
59
60mod does_exist {
61 pub struct Exists;
62}
63"#,
64 );
65 }
66
67 #[test]
68 fn dedup_unresolved_import_from_unresolved_crate() {
69 check_diagnostics(
70 r#"
71//- /main.rs crate:main
72mod a {
73 extern crate doesnotexist;
74 //^^^^^^^^^^^^^^^^^^^^^^^^^^ unresolved extern crate
75
76 // Should not error, since we already errored for the missing crate.
77 use doesnotexist::{self, bla, *};
78
79 use crate::doesnotexist;
80 //^^^^^^^^^^^^^^^^^^^ unresolved import
81}
82
83mod m {
84 use super::doesnotexist;
85 //^^^^^^^^^^^^^^^^^^^ unresolved import
86}
87"#,
88 );
89 }
90}