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Diffstat (limited to 'crates/ide-completion/src/completions/attribute/lint.rs')
| -rw-r--r-- | crates/ide-completion/src/completions/attribute/lint.rs | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/crates/ide-completion/src/completions/attribute/lint.rs b/crates/ide-completion/src/completions/attribute/lint.rs new file mode 100644 index 0000000000..8991d657e8 --- /dev/null +++ b/crates/ide-completion/src/completions/attribute/lint.rs @@ -0,0 +1,61 @@ +//! Completion for lints +use ide_db::{generated::lints::Lint, SymbolKind}; +use syntax::{ast, T}; + +use crate::{context::CompletionContext, item::CompletionItem, Completions}; + +pub(super) fn complete_lint( + acc: &mut Completions, + ctx: &CompletionContext, + existing_lints: &[ast::Path], + lints_completions: &[Lint], +) { + let is_qualified = ctx.previous_token_is(T![:]); + 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) + } +} |