ide_completion/completions/
extern_crate.rs

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1//! Completion for extern crates
2
3use hir::Name;
4use ide_db::{SymbolKind, documentation::HasDocs};
5use syntax::ToSmolStr;
6
7use crate::{CompletionItem, CompletionItemKind, context::CompletionContext};
8
9use super::Completions;
10
11pub(crate) fn complete_extern_crate(acc: &mut Completions, ctx: &CompletionContext<'_>) {
12    let imported_extern_crates: Vec<Name> = ctx.scope.extern_crate_decls().collect();
13
14    for (name, module) in ctx.scope.extern_crates() {
15        if imported_extern_crates.contains(&name) {
16            continue;
17        }
18
19        let mut item = CompletionItem::new(
20            CompletionItemKind::SymbolKind(SymbolKind::Module),
21            ctx.source_range(),
22            name.display_no_db(ctx.edition).to_smolstr(),
23            ctx.edition,
24        );
25        item.set_documentation(module.docs(ctx.db));
26
27        item.add_to(acc, ctx.db);
28    }
29}
30
31#[cfg(test)]
32mod test {
33    use crate::tests::completion_list_no_kw;
34
35    #[test]
36    fn can_complete_extern_crate() {
37        let case = r#"
38//- /lib.rs crate:other_crate_a
39// nothing here
40//- /other_crate_b.rs crate:other_crate_b
41pub mod good_mod{}
42//- /lib.rs crate:crate_c
43// nothing here
44//- /lib.rs crate:lib deps:other_crate_a,other_crate_b,crate_c extern-prelude:other_crate_a
45extern crate oth$0
46mod other_mod {}
47"#;
48
49        let completion_list = completion_list_no_kw(case);
50
51        assert_eq!("md other_crate_a\n".to_owned(), completion_list);
52    }
53
54    #[test]
55    fn will_not_complete_existing_import() {
56        let case = r#"
57//- /lib.rs crate:other_crate_a
58// nothing here
59//- /lib.rs crate:crate_c
60// nothing here
61//- /lib.rs crate:other_crate_b
62//
63//- /lib.rs crate:lib deps:other_crate_a,other_crate_b,crate_c extern-prelude:other_crate_a,other_crate_b
64extern crate other_crate_b;
65extern crate oth$0
66mod other_mod {}
67"#;
68
69        let completion_list = completion_list_no_kw(case);
70
71        assert_eq!("md other_crate_a\n".to_owned(), completion_list);
72    }
73}
ide_completion/completions/extern_crate.rs

ide_completion/completions/
extern_crate.rs
