ide_completion/completions/attribute/
lint.rs

1//! Completion for lints
2use ide_db::{
3    SymbolKind,
4    documentation::Documentation,
5    generated::lints::{CLIPPY_LINT_GROUPS, CLIPPY_LINTS, DEFAULT_LINTS, Lint, RUSTDOC_LINTS},
6};
7use syntax::ast;
8
9use crate::{Completions, context::CompletionContext, item::CompletionItem};
10
11pub(super) fn complete_lint(
12    acc: &mut Completions,
13    ctx: &CompletionContext<'_, '_>,
14    is_qualified: bool,
15    existing_lints: &[ast::Path],
16) {
17    let lints = (CLIPPY_LINT_GROUPS.iter().map(|g| &g.lint))
18        .chain(DEFAULT_LINTS)
19        .chain(CLIPPY_LINTS)
20        .chain(RUSTDOC_LINTS);
21
22    for &Lint { label, description, .. } in lints {
23        // FIXME: change `Lint`'s label to not store a path in it but split the prefix off instead?
24        let (qual, name) = match label.split_once("::") {
25            Some((qual, name)) => (Some(qual), name),
26            None => (None, label),
27        };
28        if qual.is_none() && is_qualified {
29            // qualified completion requested, but this lint is unqualified
30            continue;
31        }
32        let lint_already_annotated = existing_lints
33            .iter()
34            .filter_map(|path| {
35                let q = path.qualifier();
36                if q.as_ref().and_then(|it| it.qualifier()).is_some() {
37                    return None;
38                }
39                Some((q.and_then(|it| it.as_single_name_ref()), path.segment()?.name_ref()?))
40            })
41            .any(|(q, name_ref)| {
42                let qualifier_matches = match (q, qual) {
43                    (None, None) => true,
44                    (None, Some(_)) => false,
45                    (Some(_), None) => false,
46                    (Some(q), Some(ns)) => q.text() == ns,
47                };
48                qualifier_matches && name_ref.text() == name
49            });
50        if lint_already_annotated {
51            continue;
52        }
53        let label = match qual {
54            Some(qual) if !is_qualified => format!("{qual}::{name}"),
55            _ => name.to_owned(),
56        };
57        let mut item =
58            CompletionItem::new(SymbolKind::Attribute, ctx.source_range(), label, ctx.edition);
59        item.documentation(Documentation::new_borrowed(description));
60        item.add_to(acc, ctx.db)
61    }
62}
ide_completion/completions/attribute/lint.rs

ide_completion/completions/attribute/
lint.rs
