diff options
| -rw-r--r-- | clippy_lints/src/entry.rs | 14 | ||||
| -rw-r--r-- | tests/ui/entry_unfixable.stderr | 5 |
2 files changed, 17 insertions, 2 deletions
diff --git a/clippy_lints/src/entry.rs b/clippy_lints/src/entry.rs index 182cb4e46d2..fd3475243e3 100644 --- a/clippy_lints/src/entry.rs +++ b/clippy_lints/src/entry.rs @@ -1,4 +1,4 @@ -use clippy_utils::diagnostics::{span_lint, span_lint_and_sugg}; +use clippy_utils::diagnostics::{span_lint_and_help, span_lint_and_sugg}; use clippy_utils::source::{reindent_multiline, snippet_indent, snippet_with_applicability, snippet_with_context}; use clippy_utils::ty::is_copy; use clippy_utils::visitors::for_each_expr; @@ -194,7 +194,17 @@ impl<'tcx> LateLintPass<'tcx> for HashMapPass { if let Some(sugg) = sugg { span_lint_and_sugg(cx, MAP_ENTRY, expr.span, lint_msg, "try", sugg, app); } else { - span_lint(cx, MAP_ENTRY, expr.span, lint_msg); + span_lint_and_help( + cx, + MAP_ENTRY, + expr.span, + lint_msg, + None, + format!( + "consider using the `Entry` API: https://doc.rust-lang.org/std/collections/struct.{}.html#entry-api", + map_ty.name() + ), + ); } } } diff --git a/tests/ui/entry_unfixable.stderr b/tests/ui/entry_unfixable.stderr index 0197d2ab4cf..f92f472512f 100644 --- a/tests/ui/entry_unfixable.stderr +++ b/tests/ui/entry_unfixable.stderr @@ -10,6 +10,7 @@ LL | | false LL | | } | |_____________^ | + = help: consider using the `Entry` API: https://doc.rust-lang.org/std/collections/struct.HashMap.html#entry-api = note: `-D clippy::map-entry` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::map_entry)]` @@ -24,6 +25,8 @@ LL | | } else { LL | | hm.insert(key, true); LL | | } | |_____^ + | + = help: consider using the `Entry` API: https://doc.rust-lang.org/std/collections/struct.HashMap.html#entry-api error: usage of `contains_key` followed by `insert` on a `HashMap` --> tests/ui/entry_unfixable.rs:80:13 @@ -36,6 +39,8 @@ LL | | let interner = INTERNER.lock().unwrap(); LL | | return Err(interner.resolve(name).unwrap().to_owned()); LL | | } | |_____________^ + | + = help: consider using the `Entry` API: https://doc.rust-lang.org/std/collections/struct.HashMap.html#entry-api error: aborting due to 3 previous errors |