diff options
Diffstat (limited to 'src/tools/clippy/clippy_lints/src/methods/suspicious_to_owned.rs')
| -rw-r--r-- | src/tools/clippy/clippy_lints/src/methods/suspicious_to_owned.rs | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/src/tools/clippy/clippy_lints/src/methods/suspicious_to_owned.rs b/src/tools/clippy/clippy_lints/src/methods/suspicious_to_owned.rs index fe88fa41f..e818f1892 100644 --- a/src/tools/clippy/clippy_lints/src/methods/suspicious_to_owned.rs +++ b/src/tools/clippy/clippy_lints/src/methods/suspicious_to_owned.rs @@ -1,4 +1,4 @@ -use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::is_diag_trait_item; use clippy_utils::source::snippet_with_context; use if_chain::if_chain; @@ -17,19 +17,31 @@ pub fn check(cx: &LateContext<'_>, expr: &hir::Expr<'_>, recv: &hir::Expr<'_>) - let input_type = cx.typeck_results().expr_ty(expr); if let ty::Adt(adt, _) = cx.typeck_results().expr_ty(expr).kind(); if cx.tcx.is_diagnostic_item(sym::Cow, adt.did()); + then { let mut app = Applicability::MaybeIncorrect; let recv_snip = snippet_with_context(cx, recv.span, expr.span.ctxt(), "..", &mut app).0; - span_lint_and_sugg( + span_lint_and_then( cx, SUSPICIOUS_TO_OWNED, expr.span, &with_forced_trimmed_paths!(format!( "this `to_owned` call clones the {input_type} itself and does not cause the {input_type} contents to become owned" )), - "consider using, depending on intent", - format!("{recv_snip}.clone()` or `{recv_snip}.into_owned()"), - app, + |diag| { + diag.span_suggestion( + expr.span, + "depending on intent, either make the Cow an Owned variant", + format!("{recv_snip}.into_owned()"), + app + ); + diag.span_suggestion( + expr.span, + "or clone the Cow itself", + format!("{recv_snip}.clone()"), + app + ); + } ); return true; } |