diff options
Diffstat (limited to 'src/tools/clippy/clippy_lints/src/format_args.rs')
| -rw-r--r-- | src/tools/clippy/clippy_lints/src/format_args.rs | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/src/tools/clippy/clippy_lints/src/format_args.rs b/src/tools/clippy/clippy_lints/src/format_args.rs index 04e6949e1..c511d85e9 100644 --- a/src/tools/clippy/clippy_lints/src/format_args.rs +++ b/src/tools/clippy/clippy_lints/src/format_args.rs @@ -7,14 +7,14 @@ use clippy_utils::macros::{ }; use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet_opt; -use clippy_utils::ty::{implements_trait, is_type_diagnostic_item}; +use clippy_utils::ty::{implements_trait, is_type_lang_item}; use if_chain::if_chain; use itertools::Itertools; use rustc_errors::{ Applicability, SuggestionStyle::{CompletelyHidden, ShowCode}, }; -use rustc_hir::{Expr, ExprKind, HirId, QPath}; +use rustc_hir::{Expr, ExprKind, HirId, LangItem, QPath}; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::ty::adjustment::{Adjust, Adjustment}; use rustc_middle::ty::Ty; @@ -237,7 +237,7 @@ fn check_unused_format_specifier(cx: &LateContext<'_>, arg: &FormatArg<'_>) { ); } - if is_type_diagnostic_item(cx, param_ty, sym::Arguments) && !arg.format.is_default_for_trait() { + if is_type_lang_item(cx, param_ty, LangItem::FormatArguments) && !arg.format.is_default_for_trait() { span_lint_and_then( cx, UNUSED_FORMAT_SPECS, @@ -311,6 +311,10 @@ fn check_uninlined_args( // in those cases, make the code suggestion hidden let multiline_fix = fixes.iter().any(|(span, _)| cx.sess().source_map().is_multiline(*span)); + // Suggest removing each argument only once, for example in `format!("{0} {0}", arg)`. + fixes.sort_unstable_by_key(|(span, _)| *span); + fixes.dedup_by_key(|(span, _)| *span); + span_lint_and_then( cx, UNINLINED_FORMAT_ARGS, @@ -336,6 +340,7 @@ fn check_one_arg( if matches!(param.kind, Implicit | Starred | Named(_) | Numbered) && let ExprKind::Path(QPath::Resolved(None, path)) = param.value.kind && let [segment] = path.segments + && segment.args.is_none() && let Some(arg_span) = args.value_with_prev_comma_span(param.value.hir_id) { let replacement = match param.usage { |