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//! Completion for lints
use ide_db::{generated::lints::Lint, SymbolKind};
use syntax::ast;
use crate::{context::CompletionContext, item::CompletionItem, Completions};
pub(super) fn complete_lint(
acc: &mut Completions,
ctx: &CompletionContext<'_>,
is_qualified: bool,
existing_lints: &[ast::Path],
lints_completions: &[Lint],
) {
for &Lint { label, description } in lints_completions {
let (qual, name) = {
// FIXME: change `Lint`'s label to not store a path in it but split the prefix off instead?
let mut parts = label.split("::");
let ns_or_label = match parts.next() {
Some(it) => it,
None => continue,
};
let label = parts.next();
match label {
Some(label) => (Some(ns_or_label), label),
None => (None, ns_or_label),
}
};
if qual.is_none() && is_qualified {
// qualified completion requested, but this lint is unqualified
continue;
}
let lint_already_annotated = existing_lints
.iter()
.filter_map(|path| {
let q = path.qualifier();
if q.as_ref().and_then(|it| it.qualifier()).is_some() {
return None;
}
Some((q.and_then(|it| it.as_single_name_ref()), path.segment()?.name_ref()?))
})
.any(|(q, name_ref)| {
let qualifier_matches = match (q, qual) {
(None, None) => true,
(None, Some(_)) => false,
(Some(_), None) => false,
(Some(q), Some(ns)) => q.text() == ns,
};
qualifier_matches && name_ref.text() == name
});
if lint_already_annotated {
continue;
}
let label = match qual {
Some(qual) if !is_qualified => format!("{qual}::{name}"),
_ => name.to_owned(),
};
let mut item = CompletionItem::new(SymbolKind::Attribute, ctx.source_range(), label);
item.documentation(hir::Documentation::new(description.to_owned()));
item.add_to(acc)
}
}
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