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Suggest similar lint name on unknown_clippy_lints

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This commit is contained in:
Yuki Okushi 2019-12-27 20:41:11 +09:00
parent 0fcb5304e2
commit 5962fffcfe
1 changed files with 25 additions and 18 deletions
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43
clippy_lints/src/attrs.rs
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@ -18,6 +18,7 @@ use rustc_session::declare_tool_lint;
use semver::Version;
use syntax::ast::{AttrKind, AttrStyle, Attribute, Lit, LitKind, MetaItemKind, NestedMetaItem};
use syntax::source_map::Span;
use syntax::util::lev_distance::find_best_match_for_name;
use syntax_pos::symbol::Symbol;
declare_clippy_lint! {
@ -329,24 +330,30 @@ fn check_clippy_lint_names(cx: &LateContext<'_, '_>, items: &[NestedMetaItem]) {
lint.span(),
&format!("unknown clippy lint: clippy::{}", name),
|db| {
if name.as_str().chars().any(char::is_uppercase) {
let name_lower = name.as_str().to_lowercase();
match lint_store.check_lint_name(
&name_lower,
Some(tool_name.name)
) {
// FIXME: can we suggest similar lint names here?
// https://github.com/rust-lang/rust/pull/56992
CheckLintNameResult::NoLint(None) => (),
_ => {
db.span_suggestion(
lint.span(),
"lowercase the lint name",
name_lower,
Applicability::MaybeIncorrect,
);
}
}
let name_lower = name.as_str().to_lowercase();
let symbols = lint_store.get_lints().iter().map(
|l| Symbol::intern(&l.name_lower())
).collect::<Vec<_>>();
let sugg = find_best_match_for_name(
symbols.iter(),
&format!("clippy::{}", name_lower),
None,
);
if name.as_str().chars().any(char::is_uppercase)
&& lint_store.find_lints(&format!("clippy::{}", name_lower)).is_ok() {
db.span_suggestion(
lint.span(),
"lowercase the lint name",
format!("clippy::{}", name_lower),
Applicability::MachineApplicable,
);
} else if let Some(sugg) = sugg {
db.span_suggestion(
lint.span(),
"did you mean",
sugg.to_string(),
Applicability::MachineApplicable,
);
}
}
);