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Merge remote-tracking branch 'upstream/master' into rustup

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This commit is contained in:
Philipp Krones 2022-09-28 14:27:32 +02:00
commit bbcde66685
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GPG key ID: 1CA0DF2AF59D68A5
323 changed files with 3669 additions and 1716 deletions
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2
clippy_lints/Cargo.toml
View file

@ -18,7 +18,7 @@ quine-mc_cluskey = "0.2"
regex-syntax = "0.6"
serde = { version = "1.0", features = ["derive"] }
serde_json = { version = "1.0", optional = true }
tempfile = { version = "3.2", optional = true }
tempfile = { version = "3.3.0", optional = true }
toml = "0.5"
unicode-normalization = "0.1"
unicode-script = { version = "0.5", default-features = false }

4
clippy_lints/src/approx_const.rs
View file

@ -92,7 +92,7 @@ impl ApproxConstant {
cx,
APPROX_CONSTANT,
e.span,
&format!("approximate value of `{}::consts::{}` found", module, &name),
&format!("approximate value of `{module}::consts::{}` found", &name),
None,
"consider using the constant directly",
);
@ -126,7 +126,7 @@ fn is_approx_const(constant: f64, value: &str, min_digits: usize) -> bool {
// The value is a truncated constant
true
} else {
let round_const = format!("{:.*}", value.len() - 2, constant);
let round_const = format!("{constant:.*}", value.len() - 2);
value == round_const
}
}

2
clippy_lints/src/asm_syntax.rs
View file

@ -44,7 +44,7 @@ fn check_expr_asm_syntax(lint: &'static Lint, cx: &EarlyContext<'_>, expr: &Expr
cx,
lint,
expr.span,
&format!("{} x86 assembly syntax used", style),
&format!("{style} x86 assembly syntax used"),
None,
&format!("use {} x86 assembly syntax", !style),
);

4
clippy_lints/src/assertions_on_constants.rs
View file

@ -60,9 +60,9 @@ impl<'tcx> LateLintPass<'tcx> for AssertionsOnConstants {
cx,
ASSERTIONS_ON_CONSTANTS,
macro_call.span,
&format!("`assert!(false{})` should probably be replaced", assert_arg),
&format!("`assert!(false{assert_arg})` should probably be replaced"),
None,
&format!("use `panic!({})` or `unreachable!({0})`", panic_arg),
&format!("use `panic!({panic_arg})` or `unreachable!({panic_arg})`"),
);
}
}

10
clippy_lints/src/assertions_on_result_states.rs
View file

@ -69,9 +69,8 @@ impl<'tcx> LateLintPass<'tcx> for AssertionsOnResultStates {
"called `assert!` with `Result::is_ok`",
"replace with",
format!(
"{}.unwrap(){}",
snippet_with_context(cx, recv.span, condition.span.ctxt(), "..", &mut app).0,
semicolon
"{}.unwrap(){semicolon}",
snippet_with_context(cx, recv.span, condition.span.ctxt(), "..", &mut app).0
),
app,
);
@ -84,9 +83,8 @@ impl<'tcx> LateLintPass<'tcx> for AssertionsOnResultStates {
"called `assert!` with `Result::is_err`",
"replace with",
format!(
"{}.unwrap_err(){}",
snippet_with_context(cx, recv.span, condition.span.ctxt(), "..", &mut app).0,
semicolon
"{}.unwrap_err(){semicolon}",
snippet_with_context(cx, recv.span, condition.span.ctxt(), "..", &mut app).0
),
app,
);

7
clippy_lints/src/attrs.rs
View file

@ -541,10 +541,7 @@ fn check_attrs(cx: &LateContext<'_>, span: Span, name: Symbol, attrs: &[Attribut
cx,
INLINE_ALWAYS,
attr.span,
&format!(
"you have declared `#[inline(always)]` on `{}`. This is usually a bad idea",
name
),
&format!("you have declared `#[inline(always)]` on `{name}`. This is usually a bad idea"),
);
}
}
@ -720,7 +717,7 @@ fn check_mismatched_target_os(cx: &EarlyContext<'_>, attr: &Attribute) {
let mut unix_suggested = false;
for (os, span) in mismatched {
let sugg = format!("target_os = \"{}\"", os);
let sugg = format!("target_os = \"{os}\"");
diag.span_suggestion(span, "try", sugg, Applicability::MaybeIncorrect);
if !unix_suggested && is_unix(os) {

3
clippy_lints/src/blocks_in_if_conditions.rs
View file

@ -117,8 +117,7 @@ impl<'tcx> LateLintPass<'tcx> for BlocksInIfConditions {
);
}
} else {
let span =
block.expr.as_ref().map_or_else(|| block.stmts[0].span, |e| e.span);
let span = block.expr.as_ref().map_or_else(|| block.stmts[0].span, |e| e.span);
if span.from_expansion() || expr.span.from_expansion() {
return;
}

4
clippy_lints/src/bool_assert_comparison.rs
View file

@ -98,9 +98,9 @@ impl<'tcx> LateLintPass<'tcx> for BoolAssertComparison {
cx,
BOOL_ASSERT_COMPARISON,
macro_call.span,
&format!("used `{}!` with a literal bool", macro_name),
&format!("used `{macro_name}!` with a literal bool"),
"replace it with",
format!("{}!(..)", non_eq_mac),
format!("{non_eq_mac}!(..)"),
Applicability::MaybeIncorrect,
);
}

5
clippy_lints/src/booleans.rs
View file

@ -263,9 +263,8 @@ fn simplify_not(cx: &LateContext<'_>, expr: &Expr<'_>) -> Option<String> {
}
.and_then(|op| {
Some(format!(
"{}{}{}",
"{}{op}{}",
snippet_opt(cx, lhs.span)?,
op,
snippet_opt(cx, rhs.span)?
))
})
@ -285,7 +284,7 @@ fn simplify_not(cx: &LateContext<'_>, expr: &Expr<'_>) -> Option<String> {
let path: &str = path.ident.name.as_str();
a == path
})
.and_then(|(_, neg_method)| Some(format!("{}.{}()", snippet_opt(cx, receiver.span)?, neg_method)))
.and_then(|(_, neg_method)| Some(format!("{}.{neg_method}()", snippet_opt(cx, receiver.span)?)))
},
_ => None,
}

61
clippy_lints/src/box_default.rs Normal file
View file

@ -0,0 +1,61 @@
use clippy_utils::{diagnostics::span_lint_and_help, is_default_equivalent, path_def_id};
use rustc_hir::{Expr, ExprKind, QPath};
use rustc_lint::{LateContext, LateLintPass, LintContext};
use rustc_middle::lint::in_external_macro;
use rustc_session::{declare_lint_pass, declare_tool_lint};
use rustc_span::sym;
declare_clippy_lint! {
/// ### What it does
/// checks for `Box::new(T::default())`, which is better written as
/// `Box::<T>::default()`.
///
/// ### Why is this bad?
/// First, it's more complex, involving two calls instead of one.
/// Second, `Box::default()` can be faster
/// [in certain cases](https://nnethercote.github.io/perf-book/standard-library-types.html#box).
///
/// ### Known problems
/// The lint may miss some cases (e.g. Box::new(String::from(""))).
/// On the other hand, it will trigger on cases where the `default`
/// code comes from a macro that does something different based on
/// e.g. target operating system.
///
/// ### Example
/// ```rust
/// let x: Box<String> = Box::new(Default::default());
/// ```
/// Use instead:
/// ```rust
/// let x: Box<String> = Box::default();
/// ```
#[clippy::version = "1.65.0"]
pub BOX_DEFAULT,
perf,
"Using Box::new(T::default()) instead of Box::default()"
}
declare_lint_pass!(BoxDefault => [BOX_DEFAULT]);
impl LateLintPass<'_> for BoxDefault {
fn check_expr(&mut self, cx: &LateContext<'_>, expr: &Expr<'_>) {
if let ExprKind::Call(box_new, [arg]) = expr.kind
&& let ExprKind::Path(QPath::TypeRelative(ty, seg)) = box_new.kind
&& let ExprKind::Call(..) = arg.kind
&& !in_external_macro(cx.sess(), expr.span)
&& expr.span.eq_ctxt(arg.span)
&& seg.ident.name == sym::new
&& path_def_id(cx, ty) == cx.tcx.lang_items().owned_box()
&& is_default_equivalent(cx, arg)
{
span_lint_and_help(
cx,
BOX_DEFAULT,
expr.span,
"`Box::new(_)` of default value",
None,
"use `Box::default()` instead",
);
}
}
}

2
clippy_lints/src/cargo/common_metadata.rs
View file

@ -40,7 +40,7 @@ pub(super) fn check(cx: &LateContext<'_>, metadata: &Metadata, ignore_publish: b
}
fn missing_warning(cx: &LateContext<'_>, package: &cargo_metadata::Package, field: &str) {
let message = format!("package `{}` is missing `{}` metadata", package.name, field);
let message = format!("package `{}` is missing `{field}` metadata", package.name);
span_lint(cx, CARGO_COMMON_METADATA, DUMMY_SP, &message);
}

4
clippy_lints/src/cargo/feature_name.rs
View file

@ -57,10 +57,8 @@ fn lint(cx: &LateContext<'_>, feature: &str, substring: &str, is_prefix: bool) {
},
DUMMY_SP,
&format!(
"the \"{}\" {} in the feature name \"{}\" is {}",
substring,
"the \"{substring}\" {} in the feature name \"{feature}\" is {}",
if is_prefix { "prefix" } else { "suffix" },
feature,
if is_negative { "negative" } else { "redundant" }
),
None,

4
clippy_lints/src/cargo/mod.rs
View file

@ -196,7 +196,7 @@ impl LateLintPass<'_> for Cargo {
},
Err(e) => {
for lint in NO_DEPS_LINTS {
span_lint(cx, lint, DUMMY_SP, &format!("could not read cargo metadata: {}", e));
span_lint(cx, lint, DUMMY_SP, &format!("could not read cargo metadata: {e}"));
}
},
}
@ -212,7 +212,7 @@ impl LateLintPass<'_> for Cargo {
},
Err(e) => {
for lint in WITH_DEPS_LINTS {
span_lint(cx, lint, DUMMY_SP, &format!("could not read cargo metadata: {}", e));
span_lint(cx, lint, DUMMY_SP, &format!("could not read cargo metadata: {e}"));
}
},
}

2
clippy_lints/src/cargo/multiple_crate_versions.rs
View file

@ -37,7 +37,7 @@ pub(super) fn check(cx: &LateContext<'_>, metadata: &Metadata) {
cx,
MULTIPLE_CRATE_VERSIONS,
DUMMY_SP,
&format!("multiple versions for dependency `{}`: {}", name, versions),
&format!("multiple versions for dependency `{name}`: {versions}"),
);
}
}

2
clippy_lints/src/casts/borrow_as_ptr.rs
View file

@ -30,7 +30,7 @@ pub(super) fn check<'tcx>(
expr.span,
"borrow as raw pointer",
"try",
format!("{}::ptr::{}!({})", core_or_std, macro_name, snip),
format!("{core_or_std}::ptr::{macro_name}!({snip})"),
Applicability::MachineApplicable,
);
}

12
clippy_lints/src/casts/cast_lossless.rs
View file

@ -41,15 +41,9 @@ pub(super) fn check(
);
let message = if cast_from.is_bool() {
format!(
"casting `{0:}` to `{1:}` is more cleanly stated with `{1:}::from(_)`",
cast_from, cast_to
)
format!("casting `{cast_from:}` to `{cast_to:}` is more cleanly stated with `{cast_to:}::from(_)`")
} else {
format!(
"casting `{}` to `{}` may become silently lossy if you later change the type",
cast_from, cast_to
)
format!("casting `{cast_from}` to `{cast_to}` may become silently lossy if you later change the type")
};
span_lint_and_sugg(
@ -58,7 +52,7 @@ pub(super) fn check(
expr.span,
&message,
"try",
format!("{}::from({})", cast_to, sugg),
format!("{cast_to}::from({sugg})"),
applicability,
);
}

16
clippy_lints/src/casts/cast_possible_truncation.rs
View file

@ -103,10 +103,7 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, cast_expr: &Expr<'_>,
return;
}
format!(
"casting `{}` to `{}` may truncate the value{}",
cast_from, cast_to, suffix,
)
format!("casting `{cast_from}` to `{cast_to}` may truncate the value{suffix}",)
},
(ty::Adt(def, _), true) if def.is_enum() => {
@ -142,20 +139,17 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, cast_expr: &Expr<'_>,
CAST_ENUM_TRUNCATION,
expr.span,
&format!(
"casting `{}::{}` to `{}` will truncate the value{}",
cast_from, variant.name, cast_to, suffix,
"casting `{cast_from}::{}` to `{cast_to}` will truncate the value{suffix}",
variant.name,
),
);
return;
}
format!(
"casting `{}` to `{}` may truncate the value{}",
cast_from, cast_to, suffix,
)
format!("casting `{cast_from}` to `{cast_to}` may truncate the value{suffix}",)
},
(ty::Float(_), true) => {
format!("casting `{}` to `{}` may truncate the value", cast_from, cast_to)
format!("casting `{cast_from}` to `{cast_to}` may truncate the value")
},
(ty::Float(FloatTy::F64), false) if matches!(cast_to.kind(), &ty::Float(FloatTy::F32)) => {

5
clippy_lints/src/casts/cast_possible_wrap.rs
View file

@ -35,10 +35,7 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, cast_from: Ty<'_>, ca
cx,
CAST_POSSIBLE_WRAP,
expr.span,
&format!(
"casting `{}` to `{}` may wrap around the value{}",
cast_from, cast_to, suffix,
),
&format!("casting `{cast_from}` to `{cast_to}` may wrap around the value{suffix}",),
);
}
}

4
clippy_lints/src/casts/cast_ptr_alignment.rs
View file

@ -49,9 +49,7 @@ fn lint_cast_ptr_alignment<'tcx>(cx: &LateContext<'tcx>, expr: &Expr<'_>, cast_f
CAST_PTR_ALIGNMENT,
expr.span,
&format!(
"casting from `{}` to a more-strictly-aligned pointer (`{}`) ({} < {} bytes)",
cast_from,
cast_to,
"casting from `{cast_from}` to a more-strictly-aligned pointer (`{cast_to}`) ({} < {} bytes)",
from_layout.align.abi.bytes(),
to_layout.align.abi.bytes(),
),

5
clippy_lints/src/casts/cast_sign_loss.rs
View file

@ -14,10 +14,7 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, cast_op: &Expr<'_>, c
cx,
CAST_SIGN_LOSS,
expr.span,
&format!(
"casting `{}` to `{}` may lose the sign of the value",
cast_from, cast_to
),
&format!("casting `{cast_from}` to `{cast_to}` may lose the sign of the value"),
);
}
}

4
clippy_lints/src/casts/cast_slice_different_sizes.rs
View file

@ -35,8 +35,8 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &Expr<'tcx>, msrv: Optio
CAST_SLICE_DIFFERENT_SIZES,
expr.span,
&format!(
"casting between raw pointers to `[{}]` (element size {}) and `[{}]` (element size {}) does not adjust the count",
start_ty.ty, from_size, end_ty.ty, to_size,
"casting between raw pointers to `[{}]` (element size {from_size}) and `[{}]` (element size {to_size}) does not adjust the count",
start_ty.ty, end_ty.ty,
),
|diag| {
let ptr_snippet = source::snippet(cx, left_cast.span, "..");

2
clippy_lints/src/casts/char_lit_as_u8.rs
View file

@ -31,7 +31,7 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>) {
diag.span_suggestion(
expr.span,
"use a byte literal instead",
format!("b{}", snippet),
format!("b{snippet}"),
applicability,
);
}

4
clippy_lints/src/casts/fn_to_numeric_cast.rs
View file

@ -25,9 +25,9 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, cast_expr: &Expr<'_>,
cx,
FN_TO_NUMERIC_CAST,
expr.span,
&format!("casting function pointer `{}` to `{}`", from_snippet, cast_to),
&format!("casting function pointer `{from_snippet}` to `{cast_to}`"),
"try",
format!("{} as usize", from_snippet),
format!("{from_snippet} as usize"),
applicability,
);
}

4
clippy_lints/src/casts/fn_to_numeric_cast_any.rs
View file

@ -23,9 +23,9 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, cast_expr: &Expr<'_>,
cx,
FN_TO_NUMERIC_CAST_ANY,
expr.span,
&format!("casting function pointer `{}` to `{}`", from_snippet, cast_to),
&format!("casting function pointer `{from_snippet}` to `{cast_to}`"),
"did you mean to invoke the function?",
format!("{}() as {}", from_snippet, cast_to),
format!("{from_snippet}() as {cast_to}"),
applicability,
);
},

7
clippy_lints/src/casts/fn_to_numeric_cast_with_truncation.rs
View file

@ -24,12 +24,9 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, cast_expr: &Expr<'_>,
cx,
FN_TO_NUMERIC_CAST_WITH_TRUNCATION,
expr.span,
&format!(
"casting function pointer `{}` to `{}`, which truncates the value",
from_snippet, cast_to
),
&format!("casting function pointer `{from_snippet}` to `{cast_to}`, which truncates the value"),
"try",
format!("{} as usize", from_snippet),
format!("{from_snippet} as usize"),
applicability,
);
}

4
clippy_lints/src/casts/ptr_as_ptr.rs
View file

@ -33,7 +33,7 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, msrv: Option<RustcVer
let turbofish = match &cast_to_hir_ty.kind {
TyKind::Infer => Cow::Borrowed(""),
TyKind::Ptr(mut_ty) if matches!(mut_ty.ty.kind, TyKind::Infer) => Cow::Borrowed(""),
_ => Cow::Owned(format!("::<{}>", to_pointee_ty)),
_ => Cow::Owned(format!("::<{to_pointee_ty}>")),
};
span_lint_and_sugg(
cx,
@ -41,7 +41,7 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, msrv: Option<RustcVer
expr.span,
"`as` casting between raw pointers without changing its mutability",
"try `pointer::cast`, a safer alternative",
format!("{}.cast{}()", cast_expr_sugg.maybe_par(), turbofish),
format!("{}.cast{turbofish}()", cast_expr_sugg.maybe_par()),
applicability,
);
}

9
clippy_lints/src/casts/unnecessary_cast.rs
View file

@ -71,10 +71,7 @@ pub(super) fn check<'tcx>(
cx,
UNNECESSARY_CAST,
expr.span,
&format!(
"casting to the same type is unnecessary (`{}` -> `{}`)",
cast_from, cast_to
),
&format!("casting to the same type is unnecessary (`{cast_from}` -> `{cast_to}`)"),
"try",
literal_str,
Applicability::MachineApplicable,
@ -101,9 +98,9 @@ fn lint_unnecessary_cast(cx: &LateContext<'_>, expr: &Expr<'_>, literal_str: &st
cx,
UNNECESSARY_CAST,
expr.span,
&format!("casting {} literal to `{}` is unnecessary", literal_kind_name, cast_to),
&format!("casting {literal_kind_name} literal to `{cast_to}` is unnecessary"),
"try",
format!("{}_{}", matchless.trim_end_matches('.'), cast_to),
format!("{}_{cast_to}", matchless.trim_end_matches('.')),
Applicability::MachineApplicable,
);
}

2
clippy_lints/src/checked_conversions.rs
View file

@ -82,7 +82,7 @@ impl<'tcx> LateLintPass<'tcx> for CheckedConversions {
item.span,
"checked cast can be simplified",
"try",
format!("{}::try_from({}).is_ok()", to_type, snippet),
format!("{to_type}::try_from({snippet}).is_ok()"),
applicability,
);
}

3
clippy_lints/src/cognitive_complexity.rs
View file

@ -107,8 +107,7 @@ impl CognitiveComplexity {
COGNITIVE_COMPLEXITY,
fn_span,
&format!(
"the function has a cognitive complexity of ({}/{})",
rust_cc,
"the function has a cognitive complexity of ({rust_cc}/{})",
self.limit.limit()
),
None,

17
clippy_lints/src/default.rs
View file

@ -105,7 +105,7 @@ impl<'tcx> LateLintPass<'tcx> for Default {
cx,
DEFAULT_TRAIT_ACCESS,
expr.span,
&format!("calling `{}` is more clear than this expression", replacement),
&format!("calling `{replacement}` is more clear than this expression"),
"try",
replacement,
Applicability::Unspecified, // First resolve the TODO above
@ -210,7 +210,7 @@ impl<'tcx> LateLintPass<'tcx> for Default {
.map(|(field, rhs)| {
// extract and store the assigned value for help message
let value_snippet = snippet_with_macro_callsite(cx, rhs.span, "..");
format!("{}: {}", field, value_snippet)
format!("{field}: {value_snippet}")
})
.collect::<Vec<String>>()
.join(", ");
@ -227,7 +227,7 @@ impl<'tcx> LateLintPass<'tcx> for Default {
.map(ToString::to_string)
.collect::<Vec<_>>()
.join(", ");
format!("{}::<{}>", adt_def_ty_name, &tys_str)
format!("{adt_def_ty_name}::<{}>", &tys_str)
} else {
binding_type.to_string()
}
@ -235,12 +235,12 @@ impl<'tcx> LateLintPass<'tcx> for Default {
let sugg = if ext_with_default {
if field_list.is_empty() {
format!("{}::default()", binding_type)
format!("{binding_type}::default()")
} else {
format!("{} {{ {}, ..Default::default() }}", binding_type, field_list)
format!("{binding_type} {{ {field_list}, ..Default::default() }}")
}
} else {
format!("{} {{ {} }}", binding_type, field_list)
format!("{binding_type} {{ {field_list} }}")
};
// span lint once per statement that binds default
@ -250,10 +250,7 @@ impl<'tcx> LateLintPass<'tcx> for Default {
first_assign.unwrap().span,
"field assignment outside of initializer for an instance created with Default::default()",
Some(local.span),
&format!(
"consider initializing the variable with `{}` and removing relevant reassignments",
sugg
),
&format!("consider initializing the variable with `{sugg}` and removing relevant reassignments"),
);
self.reassigned_linted.insert(span);
}

2
clippy_lints/src/default_instead_of_iter_empty.rs
View file

@ -23,7 +23,7 @@ declare_clippy_lint! {
/// let _ = std::iter::empty::<usize>();
/// let iter: std::iter::Empty<usize> = std::iter::empty();
/// ```
#[clippy::version = "1.63.0"]
#[clippy::version = "1.64.0"]
pub DEFAULT_INSTEAD_OF_ITER_EMPTY,
style,
"check `std::iter::Empty::default()` and replace with `std::iter::empty()`"

4
clippy_lints/src/default_numeric_fallback.rs
View file

@ -95,8 +95,8 @@ impl<'a, 'tcx> NumericFallbackVisitor<'a, 'tcx> {
src
} else {
match lit.node {
LitKind::Int(src, _) => format!("{}", src),
LitKind::Float(src, _) => format!("{}", src),
LitKind::Int(src, _) => format!("{src}"),
LitKind::Float(src, _) => format!("{src}"),
_ => return,
}
};

2
clippy_lints/src/default_union_representation.rs
View file

@ -1,10 +1,10 @@
use clippy_utils::diagnostics::span_lint_and_help;
use rustc_hir::{self as hir, HirId, Item, ItemKind};
use rustc_hir_analysis::hir_ty_to_ty;
use rustc_lint::{LateContext, LateLintPass};
use rustc_middle::ty::layout::LayoutOf;
use rustc_session::{declare_lint_pass, declare_tool_lint};
use rustc_span::sym;
use rustc_hir_analysis::hir_ty_to_ty;
declare_clippy_lint! {
/// ### What it does

16
clippy_lints/src/dereference.rs
View file

@ -135,7 +135,7 @@ declare_clippy_lint! {
/// let x = String::new();
/// let y: &str = &x;
/// ```
#[clippy::version = "1.60.0"]
#[clippy::version = "1.64.0"]
pub EXPLICIT_AUTO_DEREF,
complexity,
"dereferencing when the compiler would automatically dereference"
@ -1308,7 +1308,7 @@ fn report<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>, state: State, data
};
let expr_str = if !expr_is_macro_call && is_final_ufcs && expr.precedence().order() < PREC_PREFIX {
format!("({})", expr_str)
format!("({expr_str})")
} else {
expr_str.into_owned()
};
@ -1322,7 +1322,7 @@ fn report<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>, state: State, data
Mutability::Mut => "explicit `deref_mut` method call",
},
"try this",
format!("{}{}{}", addr_of_str, deref_str, expr_str),
format!("{addr_of_str}{deref_str}{expr_str}"),
app,
);
},
@ -1336,7 +1336,7 @@ fn report<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>, state: State, data
&& !has_enclosing_paren(&snip)
&& (expr.precedence().order() < data.position.precedence() || calls_field)
{
format!("({})", snip)
format!("({snip})")
} else {
snip.into()
};
@ -1379,9 +1379,9 @@ fn report<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>, state: State, data
let (snip, snip_is_macro) = snippet_with_context(cx, expr.span, data.span.ctxt(), "..", &mut app);
let sugg =
if !snip_is_macro && expr.precedence().order() < precedence && !has_enclosing_paren(&snip) {
format!("{}({})", prefix, snip)
format!("{prefix}({snip})")
} else {
format!("{}{}", prefix, snip)
format!("{prefix}{snip}")
};
diag.span_suggestion(data.span, "try this", sugg, app);
},
@ -1460,14 +1460,14 @@ impl Dereferencing {
} else {
pat.always_deref = false;
let snip = snippet_with_context(cx, e.span, parent.span.ctxt(), "..", &mut pat.app).0;
pat.replacements.push((e.span, format!("&{}", snip)));
pat.replacements.push((e.span, format!("&{snip}")));
}
},
_ if !e.span.from_expansion() => {
// Double reference might be needed at this point.
pat.always_deref = false;
let snip = snippet_with_applicability(cx, e.span, "..", &mut pat.app);
pat.replacements.push((e.span, format!("&{}", snip)));
pat.replacements.push((e.span, format!("&{snip}")));
},
// Edge case for macros. The span of the identifier will usually match the context of the
// binding, but not if the identifier was created in a macro. e.g. `concat_idents` and proc

2
clippy_lints/src/derive.rs
View file

@ -191,7 +191,7 @@ declare_clippy_lint! {
/// ```
#[clippy::version = "1.63.0"]
pub DERIVE_PARTIAL_EQ_WITHOUT_EQ,
style,
nursery,
"deriving `PartialEq` on a type that can implement `Eq`, without implementing `Eq`"
}

2
clippy_lints/src/disallowed_methods.rs
View file

@ -106,7 +106,7 @@ impl<'tcx> LateLintPass<'tcx> for DisallowedMethods {
reason: Some(reason), ..
} = conf
{
diag.note(&format!("{} (from clippy.toml)", reason));
diag.note(&format!("{reason} (from clippy.toml)"));
}
});
}

3
clippy_lints/src/disallowed_script_idents.rs
View file

@ -99,8 +99,7 @@ impl EarlyLintPass for DisallowedScriptIdents {
DISALLOWED_SCRIPT_IDENTS,
span,
&format!(
"identifier `{}` has a Unicode script that is not allowed by configuration: {}",
symbol_str,
"identifier `{symbol_str}` has a Unicode script that is not allowed by configuration: {}",
script.full_name()
),
);

8
clippy_lints/src/disallowed_types.rs
View file

@ -1,9 +1,7 @@
use clippy_utils::diagnostics::span_lint_and_then;
use rustc_data_structures::fx::FxHashMap;
use rustc_hir::{
def::Res, def_id::DefId, Item, ItemKind, PolyTraitRef, PrimTy, Ty, TyKind, UseKind,
};
use rustc_hir::{def::Res, def_id::DefId, Item, ItemKind, PolyTraitRef, PrimTy, Ty, TyKind, UseKind};
use rustc_lint::{LateContext, LateLintPass};
use rustc_session::{declare_tool_lint, impl_lint_pass};
use rustc_span::Span;
@ -92,7 +90,7 @@ impl<'tcx> LateLintPass<'tcx> for DisallowedTypes {
conf::DisallowedType::Simple(path) => (path, None),
conf::DisallowedType::WithReason { path, reason } => (
path,
reason.as_ref().map(|reason| format!("{} (from clippy.toml)", reason)),
reason.as_ref().map(|reason| format!("{reason} (from clippy.toml)")),
),
};
let segs: Vec<_> = path.split("::").collect();
@ -130,7 +128,7 @@ fn emit(cx: &LateContext<'_>, name: &str, span: Span, reason: Option<&str>) {
cx,
DISALLOWED_TYPES,
span,
&format!("`{}` is not allowed according to config", name),
&format!("`{name}` is not allowed according to config"),
|diag| {
if let Some(reason) = reason {
diag.note(reason);

22
clippy_lints/src/doc.rs
View file

@ -237,7 +237,15 @@ impl<'tcx> LateLintPass<'tcx> for DocMarkdown {
panic_span: None,
};
fpu.visit_expr(body.value);
lint_for_missing_headers(cx, item.def_id.def_id, item.span, sig, headers, Some(body_id), fpu.panic_span);
lint_for_missing_headers(
cx,
item.def_id.def_id,
item.span,
sig,
headers,
Some(body_id),
fpu.panic_span,
);
}
},
hir::ItemKind::Impl(impl_) => {
@ -287,7 +295,15 @@ impl<'tcx> LateLintPass<'tcx> for DocMarkdown {
panic_span: None,
};
fpu.visit_expr(body.value);
lint_for_missing_headers(cx, item.def_id.def_id, item.span, sig, headers, Some(body_id), fpu.panic_span);
lint_for_missing_headers(
cx,
item.def_id.def_id,
item.span,
sig,
headers,
Some(body_id),
fpu.panic_span,
);
}
}
}
@ -790,7 +806,7 @@ fn check_word(cx: &LateContext<'_>, word: &str, span: Span) {
diag.span_suggestion_with_style(
span,
"try",
format!("`{}`", snippet),
format!("`{snippet}`"),
applicability,
// always show the suggestion in a separate line, since the
// inline presentation adds another pair of backticks

30
clippy_lints/src/drop_forget_ref.rs
View file

@ -1,7 +1,8 @@
use clippy_utils::diagnostics::{span_lint_and_help, span_lint_and_note};
use clippy_utils::get_parent_node;
use clippy_utils::is_must_use_func_call;
use clippy_utils::ty::{is_copy, is_must_use_ty, is_type_lang_item};
use rustc_hir::{Expr, ExprKind, LangItem};
use rustc_hir::{Arm, Expr, ExprKind, LangItem, Node};
use rustc_lint::{LateContext, LateLintPass};
use rustc_session::{declare_lint_pass, declare_tool_lint};
use rustc_span::sym;
@ -202,11 +203,13 @@ impl<'tcx> LateLintPass<'tcx> for DropForgetRef {
&& let Some(fn_name) = cx.tcx.get_diagnostic_name(def_id)
{
let arg_ty = cx.typeck_results().expr_ty(arg);
let is_copy = is_copy(cx, arg_ty);
let drop_is_single_call_in_arm = is_single_call_in_arm(cx, arg, expr);
let (lint, msg) = match fn_name {
sym::mem_drop if arg_ty.is_ref() => (DROP_REF, DROP_REF_SUMMARY),
sym::mem_forget if arg_ty.is_ref() => (FORGET_REF, FORGET_REF_SUMMARY),
sym::mem_drop if is_copy(cx, arg_ty) => (DROP_COPY, DROP_COPY_SUMMARY),
sym::mem_forget if is_copy(cx, arg_ty) => (FORGET_COPY, FORGET_COPY_SUMMARY),
sym::mem_drop if is_copy && !drop_is_single_call_in_arm => (DROP_COPY, DROP_COPY_SUMMARY),
sym::mem_forget if is_copy => (FORGET_COPY, FORGET_COPY_SUMMARY),
sym::mem_drop if is_type_lang_item(cx, arg_ty, LangItem::ManuallyDrop) => {
span_lint_and_help(
cx,
@ -221,7 +224,9 @@ impl<'tcx> LateLintPass<'tcx> for DropForgetRef {
sym::mem_drop
if !(arg_ty.needs_drop(cx.tcx, cx.param_env)
|| is_must_use_func_call(cx, arg)
|| is_must_use_ty(cx, arg_ty)) =>
|| is_must_use_ty(cx, arg_ty)
|| drop_is_single_call_in_arm
) =>
{
(DROP_NON_DROP, DROP_NON_DROP_SUMMARY)
},
@ -236,8 +241,23 @@ impl<'tcx> LateLintPass<'tcx> for DropForgetRef {
expr.span,
msg,
Some(arg.span),
&format!("argument has type `{}`", arg_ty),
&format!("argument has type `{arg_ty}`"),
);
}
}
}
// dropping returned value of a function like in the following snippet is considered idiomatic, see
// #9482 for examples match <var> {
// <pat> => drop(fn_with_side_effect_and_returning_some_value()),
// ..
// }
fn is_single_call_in_arm<'tcx>(cx: &LateContext<'tcx>, arg: &'tcx Expr<'_>, drop_expr: &'tcx Expr<'_>) -> bool {
if matches!(arg.kind, ExprKind::Call(..) | ExprKind::MethodCall(..)) {
let parent_node = get_parent_node(cx.tcx, drop_expr.hir_id);
if let Some(Node::Arm(Arm { body, .. })) = &parent_node {
return body.hir_id == drop_expr.hir_id;
}
}
false
}

28
clippy_lints/src/entry.rs
View file

@ -113,13 +113,8 @@ impl<'tcx> LateLintPass<'tcx> for HashMapPass {
),
};
format!(
"if let {}::{} = {}.entry({}) {} else {}",
"if let {}::{entry_kind} = {map_str}.entry({key_str}) {then_str} else {else_str}",
map_ty.entry_path(),
entry_kind,
map_str,
key_str,
then_str,
else_str,
)
} else {
// if .. { insert } else { insert }
@ -137,16 +132,11 @@ impl<'tcx> LateLintPass<'tcx> for HashMapPass {
let indent_str = snippet_indent(cx, expr.span);
let indent_str = indent_str.as_deref().unwrap_or("");
format!(
"match {}.entry({}) {{\n{indent} {entry}::{} => {}\n\
{indent} {entry}::{} => {}\n{indent}}}",
map_str,
key_str,
then_entry,
"match {map_str}.entry({key_str}) {{\n{indent_str} {entry}::{then_entry} => {}\n\
{indent_str} {entry}::{else_entry} => {}\n{indent_str}}}",
reindent_multiline(then_str.into(), true, Some(4 + indent_str.len())),
else_entry,
reindent_multiline(else_str.into(), true, Some(4 + indent_str.len())),
entry = map_ty.entry_path(),
indent = indent_str,
)
}
} else {
@ -163,20 +153,16 @@ impl<'tcx> LateLintPass<'tcx> for HashMapPass {
then_search.snippet_occupied(cx, then_expr.span, &mut app)
};
format!(
"if let {}::{} = {}.entry({}) {}",
"if let {}::{entry_kind} = {map_str}.entry({key_str}) {body_str}",
map_ty.entry_path(),
entry_kind,
map_str,
key_str,
body_str,
)
} else if let Some(insertion) = then_search.as_single_insertion() {
let value_str = snippet_with_context(cx, insertion.value.span, then_expr.span.ctxt(), "..", &mut app).0;
if contains_expr.negated {
if insertion.value.can_have_side_effects() {
format!("{}.entry({}).or_insert_with(|| {});", map_str, key_str, value_str)
format!("{map_str}.entry({key_str}).or_insert_with(|| {value_str});")
} else {
format!("{}.entry({}).or_insert({});", map_str, key_str, value_str)
format!("{map_str}.entry({key_str}).or_insert({value_str});")
}
} else {
// TODO: suggest using `if let Some(v) = map.get_mut(k) { .. }` here.
@ -186,7 +172,7 @@ impl<'tcx> LateLintPass<'tcx> for HashMapPass {
} else {
let block_str = then_search.snippet_closure(cx, then_expr.span, &mut app);
if contains_expr.negated {
format!("{}.entry({}).or_insert_with(|| {});", map_str, key_str, block_str)
format!("{map_str}.entry({key_str}).or_insert_with(|| {block_str});")
} else {
// TODO: suggest using `if let Some(v) = map.get_mut(k) { .. }` here.
// This would need to be a different lint.

7
clippy_lints/src/enum_variants.rs
View file

@ -202,12 +202,11 @@ fn check_variant(cx: &LateContext<'_>, threshold: u64, def: &EnumDef<'_>, item_n
cx,
ENUM_VARIANT_NAMES,
span,
&format!("all variants have the same {}fix: `{}`", what, value),
&format!("all variants have the same {what}fix: `{value}`"),
None,
&format!(
"remove the {}fixes and use full paths to \
the variants instead of glob imports",
what
"remove the {what}fixes and use full paths to \
the variants instead of glob imports"
),
);
}

7
clippy_lints/src/equatable_if_let.rs
View file

@ -51,9 +51,7 @@ fn unary_pattern(pat: &Pat<'_>) -> bool {
false
},
PatKind::Struct(_, a, etc) => !etc && a.iter().all(|x| unary_pattern(x.pat)),
PatKind::Tuple(a, etc) | PatKind::TupleStruct(_, a, etc) => {
!etc.as_opt_usize().is_some() && array_rec(a)
}
PatKind::Tuple(a, etc) | PatKind::TupleStruct(_, a, etc) => !etc.as_opt_usize().is_some() && array_rec(a),
PatKind::Ref(x, _) | PatKind::Box(x) => unary_pattern(x),
PatKind::Path(_) | PatKind::Lit(_) => true,
}
@ -93,9 +91,8 @@ impl<'tcx> LateLintPass<'tcx> for PatternEquality {
"this pattern matching can be expressed using equality",
"try",
format!(
"{} == {}",
"{} == {pat_str}",
snippet_with_context(cx, let_expr.init.span, expr.span.ctxt(), "..", &mut applicability).0,
pat_str,
),
applicability,
);

10
clippy_lints/src/escape.rs
View file

@ -1,6 +1,7 @@
use clippy_utils::diagnostics::span_lint_hir;
use rustc_hir::intravisit;
use rustc_hir::{self, AssocItemKind, Body, FnDecl, HirId, HirIdSet, Impl, ItemKind, Node, Pat, PatKind};
use rustc_hir_analysis::expr_use_visitor::{Delegate, ExprUseVisitor, PlaceBase, PlaceWithHirId};
use rustc_infer::infer::TyCtxtInferExt;
use rustc_lint::{LateContext, LateLintPass};
use rustc_middle::mir::FakeReadCause;
@ -10,7 +11,6 @@ use rustc_session::{declare_tool_lint, impl_lint_pass};
use rustc_span::source_map::Span;
use rustc_span::symbol::kw;
use rustc_target::spec::abi::Abi;
use rustc_hir_analysis::expr_use_visitor::{Delegate, ExprUseVisitor, PlaceBase, PlaceWithHirId};
#[derive(Copy, Clone)]
pub struct BoxedLocal {
@ -177,7 +177,13 @@ impl<'a, 'tcx> Delegate<'tcx> for EscapeDelegate<'a, 'tcx> {
}
}
fn fake_read(&mut self, _: &rustc_hir_analysis::expr_use_visitor::PlaceWithHirId<'tcx>, _: FakeReadCause, _: HirId) {}
fn fake_read(
&mut self,
_: &rustc_hir_analysis::expr_use_visitor::PlaceWithHirId<'tcx>,
_: FakeReadCause,
_: HirId,
) {
}
}
impl<'a, 'tcx> EscapeDelegate<'a, 'tcx> {

4
clippy_lints/src/eta_reduction.rs
View file

@ -129,7 +129,7 @@ impl<'tcx> LateLintPass<'tcx> for EtaReduction {
then {
// Mutable closure is used after current expr; we cannot consume it.
snippet = format!("&mut {}", snippet);
snippet = format!("&mut {snippet}");
}
}
diag.span_suggestion(
@ -157,7 +157,7 @@ impl<'tcx> LateLintPass<'tcx> for EtaReduction {
diag.span_suggestion(
expr.span,
"replace the closure with the method itself",
format!("{}::{}", name, path.ident.name),
format!("{name}::{}", path.ident.name),
Applicability::MachineApplicable,
);
})

2
clippy_lints/src/exhaustive_items.rs
View file

@ -97,7 +97,7 @@ impl LateLintPass<'_> for ExhaustiveItems {
item.span,
msg,
|diag| {
let sugg = format!("#[non_exhaustive]\n{}", indent);
let sugg = format!("#[non_exhaustive]\n{indent}");
diag.span_suggestion(suggestion_span,
"try adding #[non_exhaustive]",
sugg,

8
clippy_lints/src/explicit_write.rs
View file

@ -80,12 +80,12 @@ impl<'tcx> LateLintPass<'tcx> for ExplicitWrite {
// used.
let (used, sugg_mac) = if let Some(macro_name) = calling_macro {
(
format!("{}!({}(), ...)", macro_name, dest_name),
format!("{macro_name}!({dest_name}(), ...)"),
macro_name.replace("write", "print"),
)
} else {
(
format!("{}().write_fmt(...)", dest_name),
format!("{dest_name}().write_fmt(...)"),
"print".into(),
)
};
@ -100,9 +100,9 @@ impl<'tcx> LateLintPass<'tcx> for ExplicitWrite {
cx,
EXPLICIT_WRITE,
expr.span,
&format!("use of `{}.unwrap()`", used),
&format!("use of `{used}.unwrap()`"),
"try this",
format!("{}{}!({})", prefix, sugg_mac, inputs_snippet),
format!("{prefix}{sugg_mac}!({inputs_snippet})"),
applicability,
)
}

6
clippy_lints/src/float_literal.rs
View file

@ -173,9 +173,9 @@ impl FloatFormat {
T: fmt::UpperExp + fmt::LowerExp + fmt::Display,
{
match self {
Self::LowerExp => format!("{:e}", f),
Self::UpperExp => format!("{:E}", f),
Self::Normal => format!("{}", f),
Self::LowerExp => format!("{f:e}"),
Self::UpperExp => format!("{f:E}"),
Self::Normal => format!("{f}"),
}
}
}

7
clippy_lints/src/floating_point_arithmetic.rs
View file

@ -142,8 +142,7 @@ fn prepare_receiver_sugg<'a>(cx: &LateContext<'_>, mut expr: &'a Expr<'a>) -> Su
if let ast::LitKind::Float(sym, ast::LitFloatType::Unsuffixed) = lit.node;
then {
let op = format!(
"{}{}{}",
suggestion,
"{suggestion}{}{}",
// Check for float literals without numbers following the decimal
// separator such as `2.` and adds a trailing zero
if sym.as_str().ends_with('.') {
@ -172,7 +171,7 @@ fn check_log_base(cx: &LateContext<'_>, expr: &Expr<'_>, receiver: &Expr<'_>, ar
expr.span,
"logarithm for bases 2, 10 and e can be computed more accurately",
"consider using",
format!("{}.{}()", Sugg::hir(cx, receiver, "..").maybe_par(), method),
format!("{}.{method}()", Sugg::hir(cx, receiver, "..").maybe_par()),
Applicability::MachineApplicable,
);
}
@ -251,7 +250,7 @@ fn check_powf(cx: &LateContext<'_>, expr: &Expr<'_>, receiver: &Expr<'_>, args:
expr.span,
"exponent for bases 2 and e can be computed more accurately",
"consider using",
format!("{}.{}()", prepare_receiver_sugg(cx, &args[0]), method),
format!("{}.{method}()", prepare_receiver_sugg(cx, &args[0])),
Applicability::MachineApplicable,
);
}

2
clippy_lints/src/format.rs
View file

@ -62,7 +62,7 @@ impl<'tcx> LateLintPass<'tcx> for UselessFormat {
[_] => {
// Simulate macro expansion, converting {{ and }} to { and }.
let s_expand = format_args.format_string.snippet.replace("{{", "{").replace("}}", "}");
let sugg = format!("{}.to_string()", s_expand);
let sugg = format!("{s_expand}.to_string()");
span_useless_format(cx, call_site, sugg, applicability);
},
[..] => {},

175
clippy_lints/src/format_args.rs
View file

@ -1,16 +1,18 @@
use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_and_then};
use clippy_utils::is_diag_trait_item;
use clippy_utils::macros::{is_format_macro, FormatArgsExpn};
use clippy_utils::source::snippet_opt;
use clippy_utils::macros::FormatParamKind::{Implicit, Named, Numbered, Starred};
use clippy_utils::macros::{is_format_macro, FormatArgsExpn, FormatParam, FormatParamUsage};
use clippy_utils::source::{expand_past_previous_comma, snippet_opt};
use clippy_utils::ty::implements_trait;
use clippy_utils::{is_diag_trait_item, meets_msrv, msrvs};
use if_chain::if_chain;
use itertools::Itertools;
use rustc_errors::Applicability;
use rustc_hir::{Expr, ExprKind, HirId};
use rustc_hir::{Expr, ExprKind, HirId, Path, QPath};
use rustc_lint::{LateContext, LateLintPass};
use rustc_middle::ty::adjustment::{Adjust, Adjustment};
use rustc_middle::ty::Ty;
use rustc_session::{declare_lint_pass, declare_tool_lint};
use rustc_semver::RustcVersion;
use rustc_session::{declare_tool_lint, impl_lint_pass};
use rustc_span::{sym, ExpnData, ExpnKind, Span, Symbol};
declare_clippy_lint! {
@ -64,7 +66,67 @@ declare_clippy_lint! {
"`to_string` applied to a type that implements `Display` in format args"
}
declare_lint_pass!(FormatArgs => [FORMAT_IN_FORMAT_ARGS, TO_STRING_IN_FORMAT_ARGS]);
declare_clippy_lint! {
/// ### What it does
/// Detect when a variable is not inlined in a format string,
/// and suggests to inline it.
///
/// ### Why is this bad?
/// Non-inlined code is slightly more difficult to read and understand,
/// as it requires arguments to be matched against the format string.
/// The inlined syntax, where allowed, is simpler.
///
/// ### Example
/// ```rust
/// # let var = 42;
/// # let width = 1;
/// # let prec = 2;
/// format!("{}", var);
/// format!("{v:?}", v = var);
/// format!("{0} {0}", var);
/// format!("{0:1$}", var, width);
/// format!("{:.*}", prec, var);
/// ```
/// Use instead:
/// ```rust
/// # let var = 42;
/// # let width = 1;
/// # let prec = 2;
/// format!("{var}");
/// format!("{var:?}");
/// format!("{var} {var}");
/// format!("{var:width$}");
/// format!("{var:.prec$}");
/// ```
///
/// ### Known Problems
///
/// There may be a false positive if the format string is expanded from certain proc macros:
///
/// ```ignore
/// println!(indoc!("{}"), var);
/// ```
///
/// If a format string contains a numbered argument that cannot be inlined
/// nothing will be suggested, e.g. `println!("{0}={1}", var, 1+2)`.
#[clippy::version = "1.65.0"]
pub UNINLINED_FORMAT_ARGS,
pedantic,
"using non-inlined variables in `format!` calls"
}
impl_lint_pass!(FormatArgs => [FORMAT_IN_FORMAT_ARGS, UNINLINED_FORMAT_ARGS, TO_STRING_IN_FORMAT_ARGS]);
pub struct FormatArgs {
msrv: Option<RustcVersion>,
}
impl FormatArgs {
#[must_use]
pub fn new(msrv: Option<RustcVersion>) -> Self {
Self { msrv }
}
}
impl<'tcx> LateLintPass<'tcx> for FormatArgs {
fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) {
@ -86,9 +148,73 @@ impl<'tcx> LateLintPass<'tcx> for FormatArgs {
check_format_in_format_args(cx, outermost_expn_data.call_site, name, arg.param.value);
check_to_string_in_format_args(cx, name, arg.param.value);
}
if meets_msrv(self.msrv, msrvs::FORMAT_ARGS_CAPTURE) {
check_uninlined_args(cx, &format_args, outermost_expn_data.call_site);
}
}
}
}
extract_msrv_attr!(LateContext);
}
fn check_uninlined_args(cx: &LateContext<'_>, args: &FormatArgsExpn<'_>, call_site: Span) {
if args.format_string.span.from_expansion() {
return;
}
let mut fixes = Vec::new();
// If any of the arguments are referenced by an index number,
// and that argument is not a simple variable and cannot be inlined,
// we cannot remove any other arguments in the format string,
// because the index numbers might be wrong after inlining.
// Example of an un-inlinable format: print!("{}{1}", foo, 2)
if !args.params().all(|p| check_one_arg(cx, &p, &mut fixes)) || fixes.is_empty() {
return;
}
// FIXME: Properly ignore a rare case where the format string is wrapped in a macro.
// Example: `format!(indoc!("{}"), foo);`
// If inlined, they will cause a compilation error:
// > to avoid ambiguity, `format_args!` cannot capture variables
// > when the format string is expanded from a macro
// @Alexendoo explanation:
// > indoc! is a proc macro that is producing a string literal with its span
// > set to its input it's not marked as from expansion, and since it's compatible
// > tokenization wise clippy_utils::is_from_proc_macro wouldn't catch it either
// This might be a relatively expensive test, so do it only we are ready to replace.
// See more examples in tests/ui/uninlined_format_args.rs
span_lint_and_then(
cx,
UNINLINED_FORMAT_ARGS,
call_site,
"variables can be used directly in the `format!` string",
|diag| {
diag.multipart_suggestion("change this to", fixes, Applicability::MachineApplicable);
},
);
}
fn check_one_arg(cx: &LateContext<'_>, param: &FormatParam<'_>, fixes: &mut Vec<(Span, String)>) -> bool {
if matches!(param.kind, Implicit | Starred | Named(_) | Numbered)
&& let ExprKind::Path(QPath::Resolved(None, path)) = param.value.kind
&& let Path { span, segments, .. } = path
&& let [segment] = segments
{
let replacement = match param.usage {
FormatParamUsage::Argument => segment.ident.name.to_string(),
FormatParamUsage::Width => format!("{}$", segment.ident.name),
FormatParamUsage::Precision => format!(".{}$", segment.ident.name),
};
fixes.push((param.span, replacement));
let arg_span = expand_past_previous_comma(cx, *span);
fixes.push((arg_span, String::new()));
true // successful inlining, continue checking
} else {
// if we can't inline a numbered argument, we can't continue
param.kind != Numbered
}
}
fn outermost_expn_data(expn_data: ExpnData) -> ExpnData {
@ -99,12 +225,7 @@ fn outermost_expn_data(expn_data: ExpnData) -> ExpnData {
}
}
fn check_format_in_format_args(
cx: &LateContext<'_>,
call_site: Span,
name: Symbol,
arg: &Expr<'_>,
) {
fn check_format_in_format_args(cx: &LateContext<'_>, call_site: Span, name: Symbol, arg: &Expr<'_>) {
let expn_data = arg.span.ctxt().outer_expn_data();
if expn_data.call_site.from_expansion() {
return;
@ -117,11 +238,10 @@ fn check_format_in_format_args(
cx,
FORMAT_IN_FORMAT_ARGS,
call_site,
&format!("`format!` in `{}!` args", name),
&format!("`format!` in `{name}!` args"),
|diag| {
diag.help(&format!(
"combine the `format!(..)` arguments with the outer `{}!(..)` call",
name
"combine the `format!(..)` arguments with the outer `{name}!(..)` call"
));
diag.help("or consider changing `format!` to `format_args!`");
},
@ -149,8 +269,7 @@ fn check_to_string_in_format_args(cx: &LateContext<'_>, name: Symbol, value: &Ex
TO_STRING_IN_FORMAT_ARGS,
value.span.with_lo(receiver.span.hi()),
&format!(
"`to_string` applied to a type that implements `Display` in `{}!` args",
name
"`to_string` applied to a type that implements `Display` in `{name}!` args"
),
"remove this",
String::new(),
@ -162,16 +281,13 @@ fn check_to_string_in_format_args(cx: &LateContext<'_>, name: Symbol, value: &Ex
TO_STRING_IN_FORMAT_ARGS,
value.span,
&format!(
"`to_string` applied to a type that implements `Display` in `{}!` args",
name
"`to_string` applied to a type that implements `Display` in `{name}!` args"
),
"use this",
format!(
"{}{:*>width$}{}",
"{}{:*>n_needed_derefs$}{receiver_snippet}",
if needs_ref { "&" } else { "" },
"",
receiver_snippet,
width = n_needed_derefs
""
),
Applicability::MachineApplicable,
);
@ -180,9 +296,12 @@ fn check_to_string_in_format_args(cx: &LateContext<'_>, name: Symbol, value: &Ex
}
}
// Returns true if `hir_id` is referred to by multiple format params
/// Returns true if `hir_id` is referred to by multiple format params
fn is_aliased(args: &FormatArgsExpn<'_>, hir_id: HirId) -> bool {
args.params().filter(|param| param.value.hir_id == hir_id).at_most_one().is_err()
args.params()
.filter(|param| param.value.hir_id == hir_id)
.at_most_one()
.is_err()
}
fn count_needed_derefs<'tcx, I>(mut ty: Ty<'tcx>, mut iter: I) -> (usize, Ty<'tcx>)
@ -192,7 +311,11 @@ where
let mut n_total = 0;
let mut n_needed = 0;
loop {
if let Some(Adjustment { kind: Adjust::Deref(overloaded_deref), target }) = iter.next() {
if let Some(Adjustment {
kind: Adjust::Deref(overloaded_deref),
target,
}) = iter.next()
{
n_total += 1;
if overloaded_deref.is_some() {
n_needed = n_total;

6
clippy_lints/src/format_impl.rs
View file

@ -214,12 +214,12 @@ fn check_print_in_format_impl(cx: &LateContext<'_>, expr: &Expr<'_>, impl_trait:
cx,
PRINT_IN_FORMAT_IMPL,
macro_call.span,
&format!("use of `{}!` in `{}` impl", name, impl_trait.name),
&format!("use of `{name}!` in `{}` impl", impl_trait.name),
"replace with",
if let Some(formatter_name) = impl_trait.formatter_name {
format!("{}!({}, ..)", replacement, formatter_name)
format!("{replacement}!({formatter_name}, ..)")
} else {
format!("{}!(..)", replacement)
format!("{replacement}!(..)")
},
Applicability::HasPlaceholders,
);

25
clippy_lints/src/formatting.rs
View file

@ -154,11 +154,10 @@ fn check_assign(cx: &EarlyContext<'_>, expr: &Expr) {
eqop_span,
&format!(
"this looks like you are trying to use `.. {op}= ..`, but you \
really are doing `.. = ({op} ..)`",
op = op
really are doing `.. = ({op} ..)`"
),
None,
&format!("to remove this lint, use either `{op}=` or `= {op}`", op = op),
&format!("to remove this lint, use either `{op}=` or `= {op}`"),
);
}
}
@ -191,16 +190,12 @@ fn check_unop(cx: &EarlyContext<'_>, expr: &Expr) {
SUSPICIOUS_UNARY_OP_FORMATTING,
eqop_span,
&format!(
"by not having a space between `{binop}` and `{unop}` it looks like \
`{binop}{unop}` is a single operator",
binop = binop_str,
unop = unop_str
"by not having a space between `{binop_str}` and `{unop_str}` it looks like \
`{binop_str}{unop_str}` is a single operator"
),
None,
&format!(
"put a space between `{binop}` and `{unop}` and remove the space after `{unop}`",
binop = binop_str,
unop = unop_str
"put a space between `{binop_str}` and `{unop_str}` and remove the space after `{unop_str}`"
),
);
}
@ -246,12 +241,11 @@ fn check_else(cx: &EarlyContext<'_>, expr: &Expr) {
cx,
SUSPICIOUS_ELSE_FORMATTING,
else_span,
&format!("this is an `else {}` but the formatting might hide it", else_desc),
&format!("this is an `else {else_desc}` but the formatting might hide it"),
None,
&format!(
"to remove this lint, remove the `else` or remove the new line between \
`else` and `{}`",
else_desc,
`else` and `{else_desc}`",
),
);
}
@ -320,11 +314,10 @@ fn check_missing_else(cx: &EarlyContext<'_>, first: &Expr, second: &Expr) {
cx,
SUSPICIOUS_ELSE_FORMATTING,
else_span,
&format!("this looks like {} but the `else` is missing", looks_like),
&format!("this looks like {looks_like} but the `else` is missing"),
None,
&format!(
"to remove this lint, add the missing `else` or add a new line before {}",
next_thing,
"to remove this lint, add the missing `else` or add a new line before {next_thing}",
),
);
}

2
clippy_lints/src/from_str_radix_10.rs
View file

@ -88,7 +88,7 @@ impl<'tcx> LateLintPass<'tcx> for FromStrRadix10 {
exp.span,
"this call to `from_str_radix` can be replaced with a call to `str::parse`",
"try",
format!("{}.parse::<{}>()", sugg, prim_ty.name_str()),
format!("{sugg}.parse::<{}>()", prim_ty.name_str()),
Applicability::MaybeIncorrect
);
}

5
clippy_lints/src/functions/must_use.rs
View file

@ -47,7 +47,8 @@ pub(super) fn check_impl_item<'tcx>(cx: &LateContext<'tcx>, item: &'tcx hir::Imp
let attr = cx.tcx.get_attr(item.def_id.to_def_id(), sym::must_use);
if let Some(attr) = attr {
check_needless_must_use(cx, sig.decl, item.hir_id(), item.span, fn_header_span, attr);
} else if is_public && !is_proc_macro(cx.sess(), attrs) && trait_ref_of_method(cx, item.def_id.def_id).is_none() {
} else if is_public && !is_proc_macro(cx.sess(), attrs) && trait_ref_of_method(cx, item.def_id.def_id).is_none()
{
check_must_use_candidate(
cx,
sig.decl,
@ -143,7 +144,7 @@ fn check_must_use_candidate<'tcx>(
diag.span_suggestion(
fn_span,
"add the attribute",
format!("#[must_use] {}", snippet),
format!("#[must_use] {snippet}"),
Applicability::MachineApplicable,
);
}

5
clippy_lints/src/functions/too_many_arguments.rs
View file

@ -59,10 +59,7 @@ fn check_arg_number(cx: &LateContext<'_>, decl: &hir::FnDecl<'_>, fn_span: Span,
cx,
TOO_MANY_ARGUMENTS,
fn_span,
&format!(
"this function has too many arguments ({}/{})",
args, too_many_arguments_threshold
),
&format!("this function has too many arguments ({args}/{too_many_arguments_threshold})"),
);
}
}

5
clippy_lints/src/functions/too_many_lines.rs
View file

@ -78,10 +78,7 @@ pub(super) fn check_fn(
cx,
TOO_MANY_LINES,
span,
&format!(
"this function has too many lines ({}/{})",
line_count, too_many_lines_threshold
),
&format!("this function has too many lines ({line_count}/{too_many_lines_threshold})"),
);
}
}

9
clippy_lints/src/if_then_some_else_none.rs
View file

@ -84,7 +84,7 @@ impl<'tcx> LateLintPass<'tcx> for IfThenSomeElseNone {
{
let cond_snip = snippet_with_macro_callsite(cx, cond.span, "[condition]");
let cond_snip = if matches!(cond.kind, ExprKind::Unary(_, _) | ExprKind::Binary(_, _, _)) {
format!("({})", cond_snip)
format!("({cond_snip})")
} else {
cond_snip.into_owned()
};
@ -92,7 +92,7 @@ impl<'tcx> LateLintPass<'tcx> for IfThenSomeElseNone {
let mut method_body = if then_block.stmts.is_empty() {
arg_snip.into_owned()
} else {
format!("{{ /* snippet */ {} }}", arg_snip)
format!("{{ /* snippet */ {arg_snip} }}")
};
let method_name = if switch_to_eager_eval(cx, expr) && meets_msrv(self.msrv, msrvs::BOOL_THEN_SOME) {
"then_some"
@ -102,14 +102,13 @@ impl<'tcx> LateLintPass<'tcx> for IfThenSomeElseNone {
};
let help = format!(
"consider using `bool::{}` like: `{}.{}({})`",
method_name, cond_snip, method_name, method_body,
"consider using `bool::{method_name}` like: `{cond_snip}.{method_name}({method_body})`",
);
span_lint_and_help(
cx,
IF_THEN_SOME_ELSE_NONE,
expr.span,
&format!("this could be simplified with `bool::{}`", method_name),
&format!("this could be simplified with `bool::{method_name}`"),
None,
&help,
);

9
clippy_lints/src/implicit_hasher.rs
View file

@ -5,6 +5,7 @@ use rustc_errors::Diagnostic;
use rustc_hir as hir;
use rustc_hir::intravisit::{walk_body, walk_expr, walk_inf, walk_ty, Visitor};
use rustc_hir::{Body, Expr, ExprKind, GenericArg, Item, ItemKind, QPath, TyKind};
use rustc_hir_analysis::hir_ty_to_ty;
use rustc_lint::{LateContext, LateLintPass, LintContext};
use rustc_middle::hir::nested_filter;
use rustc_middle::lint::in_external_macro;
@ -12,7 +13,6 @@ use rustc_middle::ty::{Ty, TypeckResults};
use rustc_session::{declare_lint_pass, declare_tool_lint};
use rustc_span::source_map::Span;
use rustc_span::symbol::sym;
use rustc_hir_analysis::hir_ty_to_ty;
use if_chain::if_chain;
@ -89,8 +89,7 @@ impl<'tcx> LateLintPass<'tcx> for ImplicitHasher {
(
generics_suggestion_span,
format!(
"<{}{}S: ::std::hash::BuildHasher{}>",
generics_snip,
"<{generics_snip}{}S: ::std::hash::BuildHasher{}>",
if generics_snip.is_empty() { "" } else { ", " },
if vis.suggestions.is_empty() {
""
@ -263,8 +262,8 @@ impl<'tcx> ImplicitHasherType<'tcx> {
fn type_arguments(&self) -> String {
match *self {
ImplicitHasherType::HashMap(.., ref k, ref v) => format!("{}, {}", k, v),
ImplicitHasherType::HashSet(.., ref t) => format!("{}", t),
ImplicitHasherType::HashMap(.., ref k, ref v) => format!("{k}, {v}"),
ImplicitHasherType::HashSet(.., ref t) => format!("{t}"),
}
}

4
clippy_lints/src/implicit_return.rs
View file

@ -53,7 +53,7 @@ fn lint_return(cx: &LateContext<'_>, emission_place: HirId, span: Span) {
span,
"missing `return` statement",
|diag| {
diag.span_suggestion(span, "add `return` as shown", format!("return {}", snip), app);
diag.span_suggestion(span, "add `return` as shown", format!("return {snip}"), app);
},
);
}
@ -71,7 +71,7 @@ fn lint_break(cx: &LateContext<'_>, emission_place: HirId, break_span: Span, exp
diag.span_suggestion(
break_span,
"change `break` to `return` as shown",
format!("return {}", snip),
format!("return {snip}"),
app,
);
},

2
clippy_lints/src/implicit_saturating_sub.rs
View file

@ -170,7 +170,7 @@ fn print_lint_and_sugg(cx: &LateContext<'_>, var_name: &str, expr: &Expr<'_>) {
expr.span,
"implicitly performing saturating subtraction",
"try",
format!("{} = {}.saturating_sub({});", var_name, var_name, '1'),
format!("{var_name} = {var_name}.saturating_sub({});", '1'),
Applicability::MachineApplicable,
);
}

6
clippy_lints/src/inconsistent_struct_constructor.rs
View file

@ -90,7 +90,7 @@ impl<'tcx> LateLintPass<'tcx> for InconsistentStructConstructor {
let mut fields_snippet = String::new();
let (last_ident, idents) = ordered_fields.split_last().unwrap();
for ident in idents {
let _ = write!(fields_snippet, "{}, ", ident);
let _ = write!(fields_snippet, "{ident}, ");
}
fields_snippet.push_str(&last_ident.to_string());
@ -100,10 +100,8 @@ impl<'tcx> LateLintPass<'tcx> for InconsistentStructConstructor {
String::new()
};
let sugg = format!("{} {{ {}{} }}",
let sugg = format!("{} {{ {fields_snippet}{base_snippet} }}",
snippet(cx, qpath.span(), ".."),
fields_snippet,
base_snippet,
);
span_lint_and_sugg(

4
clippy_lints/src/index_refutable_slice.rs
View file

@ -139,14 +139,14 @@ fn lint_slice(cx: &LateContext<'_>, slice: &SliceLintInformation) {
.map(|(index, _)| *index)
.collect::<FxHashSet<_>>();
let value_name = |index| format!("{}_{}", slice.ident.name, index);
let value_name = |index| format!("{}_{index}", slice.ident.name);
if let Some(max_index) = used_indices.iter().max() {
let opt_ref = if slice.needs_ref { "ref " } else { "" };
let pat_sugg_idents = (0..=*max_index)
.map(|index| {
if used_indices.contains(&index) {
format!("{}{}", opt_ref, value_name(index))
format!("{opt_ref}{}", value_name(index))
} else {
"_".to_string()
}

12
clippy_lints/src/inherent_to_string.rs
View file

@ -131,23 +131,19 @@ fn show_lint(cx: &LateContext<'_>, item: &ImplItem<'_>) {
INHERENT_TO_STRING_SHADOW_DISPLAY,
item.span,
&format!(
"type `{}` implements inherent method `to_string(&self) -> String` which shadows the implementation of `Display`",
self_type
"type `{self_type}` implements inherent method `to_string(&self) -> String` which shadows the implementation of `Display`"
),
None,
&format!("remove the inherent method from type `{}`", self_type),
&format!("remove the inherent method from type `{self_type}`"),
);
} else {
span_lint_and_help(
cx,
INHERENT_TO_STRING,
item.span,
&format!(
"implementation of inherent method `to_string(&self) -> String` for type `{}`",
self_type
),
&format!("implementation of inherent method `to_string(&self) -> String` for type `{self_type}`"),
None,
&format!("implement trait `Display` for type `{}` instead", self_type),
&format!("implement trait `Display` for type `{self_type}` instead"),
);
}
}

2
clippy_lints/src/inline_fn_without_body.rs
View file

@ -51,7 +51,7 @@ fn check_attrs(cx: &LateContext<'_>, name: Symbol, attrs: &[Attribute]) {
cx,
INLINE_FN_WITHOUT_BODY,
attr.span,
&format!("use of `#[inline]` on trait method `{}` which has no body", name),
&format!("use of `#[inline]` on trait method `{name}` which has no body"),
|diag| {
diag.suggest_remove_item(cx, attr.span, "remove", Applicability::MachineApplicable);
},

4
clippy_lints/src/int_plus_one.rs
View file

@ -138,8 +138,8 @@ impl IntPlusOne {
if let Some(snippet) = snippet_opt(cx, node.span) {
if let Some(other_side_snippet) = snippet_opt(cx, other_side.span) {
let rec = match side {
Side::Lhs => Some(format!("{} {} {}", snippet, binop_string, other_side_snippet)),
Side::Rhs => Some(format!("{} {} {}", other_side_snippet, binop_string, snippet)),
Side::Lhs => Some(format!("{snippet} {binop_string} {other_side_snippet}")),
Side::Rhs => Some(format!("{other_side_snippet} {binop_string} {snippet}")),
};
return rec;
}

5
clippy_lints/src/iter_not_returning_iterator.rs
View file

@ -80,10 +80,7 @@ fn check_sig(cx: &LateContext<'_>, name: &str, sig: &FnSig<'_>, fn_id: LocalDefI
cx,
ITER_NOT_RETURNING_ITERATOR,
sig.span,
&format!(
"this method is named `{}` but its return type does not implement `Iterator`",
name
),
&format!("this method is named `{name}` but its return type does not implement `Iterator`"),
);
}
}

2
clippy_lints/src/large_const_arrays.rs
View file

@ -2,12 +2,12 @@ use clippy_utils::diagnostics::span_lint_and_then;
use if_chain::if_chain;
use rustc_errors::Applicability;
use rustc_hir::{Item, ItemKind};
use rustc_hir_analysis::hir_ty_to_ty;
use rustc_lint::{LateContext, LateLintPass};
use rustc_middle::ty::layout::LayoutOf;
use rustc_middle::ty::{self, ConstKind};
use rustc_session::{declare_tool_lint, impl_lint_pass};
use rustc_span::{BytePos, Pos, Span};
use rustc_hir_analysis::hir_ty_to_ty;
declare_clippy_lint! {
/// ### What it does

38
clippy_lints/src/len_zero.rs
View file

@ -210,7 +210,8 @@ fn check_trait_items(cx: &LateContext<'_>, visited_trait: &Item<'_>, trait_items
}
}
if cx.access_levels.is_exported(visited_trait.def_id.def_id) && trait_items.iter().any(|i| is_named_self(cx, i, sym::len))
if cx.access_levels.is_exported(visited_trait.def_id.def_id)
&& trait_items.iter().any(|i| is_named_self(cx, i, sym::len))
{
let mut current_and_super_traits = DefIdSet::default();
fill_trait_set(visited_trait.def_id.to_def_id(), &mut current_and_super_traits, cx);
@ -278,15 +279,13 @@ impl<'tcx> LenOutput<'tcx> {
_ => "",
};
match self {
Self::Integral => format!("expected signature: `({}self) -> bool`", self_ref),
Self::Option(_) => format!(
"expected signature: `({}self) -> bool` or `({}self) -> Option<bool>",
self_ref, self_ref
),
Self::Result(..) => format!(
"expected signature: `({}self) -> bool` or `({}self) -> Result<bool>",
self_ref, self_ref
),
Self::Integral => format!("expected signature: `({self_ref}self) -> bool`"),
Self::Option(_) => {
format!("expected signature: `({self_ref}self) -> bool` or `({self_ref}self) -> Option<bool>")
},
Self::Result(..) => {
format!("expected signature: `({self_ref}self) -> bool` or `({self_ref}self) -> Result<bool>")
},
}
}
}
@ -326,8 +325,7 @@ fn check_for_is_empty<'tcx>(
let (msg, is_empty_span, self_kind) = match is_empty {
None => (
format!(
"{} `{}` has a public `len` method, but no `is_empty` method",
item_kind,
"{item_kind} `{}` has a public `len` method, but no `is_empty` method",
item_name.as_str(),
),
None,
@ -335,8 +333,7 @@ fn check_for_is_empty<'tcx>(
),
Some(is_empty) if !cx.access_levels.is_exported(is_empty.def_id.expect_local()) => (
format!(
"{} `{}` has a public `len` method, but a private `is_empty` method",
item_kind,
"{item_kind} `{}` has a public `len` method, but a private `is_empty` method",
item_name.as_str(),
),
Some(cx.tcx.def_span(is_empty.def_id)),
@ -348,8 +345,7 @@ fn check_for_is_empty<'tcx>(
{
(
format!(
"{} `{}` has a public `len` method, but the `is_empty` method has an unexpected signature",
item_kind,
"{item_kind} `{}` has a public `len` method, but the `is_empty` method has an unexpected signature",
item_name.as_str(),
),
Some(cx.tcx.def_span(is_empty.def_id)),
@ -419,10 +415,9 @@ fn check_len(
LEN_ZERO,
span,
&format!("length comparison to {}", if compare_to == 0 { "zero" } else { "one" }),
&format!("using `{}is_empty` is clearer and more explicit", op),
&format!("using `{op}is_empty` is clearer and more explicit"),
format!(
"{}{}.is_empty()",
op,
"{op}{}.is_empty()",
snippet_with_applicability(cx, receiver.span, "_", &mut applicability)
),
applicability,
@ -439,10 +434,9 @@ fn check_empty_expr(cx: &LateContext<'_>, span: Span, lit1: &Expr<'_>, lit2: &Ex
COMPARISON_TO_EMPTY,
span,
"comparison to empty slice",
&format!("using `{}is_empty` is clearer and more explicit", op),
&format!("using `{op}is_empty` is clearer and more explicit"),
format!(
"{}{}.is_empty()",
op,
"{op}{}.is_empty()",
snippet_with_applicability(cx, lit1.span, "_", &mut applicability)
),
applicability,

3
clippy_lints/src/let_if_seq.rs
View file

@ -106,8 +106,7 @@ impl<'tcx> LateLintPass<'tcx> for LetIfSeq {
// use mutably after the `if`
let sug = format!(
"let {mut}{name} = if {cond} {{{then} {value} }} else {{{else} {default} }};",
mut=mutability,
"let {mutability}{name} = if {cond} {{{then} {value} }} else {{{else} {default} }};",
name=ident.name,
cond=snippet(cx, cond.span, "_"),
then=if then.stmts.len() > 1 { " ..;" } else { "" },

2
clippy_lints/src/lib.register_all.rs
View file

@ -21,6 +21,7 @@ store.register_group(true, "clippy::all", Some("clippy_all"), vec![
LintId::of(booleans::NONMINIMAL_BOOL),
LintId::of(booleans::OVERLY_COMPLEX_BOOL_EXPR),
LintId::of(borrow_deref_ref::BORROW_DEREF_REF),
LintId::of(box_default::BOX_DEFAULT),
LintId::of(casts::CAST_ABS_TO_UNSIGNED),
LintId::of(casts::CAST_ENUM_CONSTRUCTOR),
LintId::of(casts::CAST_ENUM_TRUNCATION),
@ -44,7 +45,6 @@ store.register_group(true, "clippy::all", Some("clippy_all"), vec![
LintId::of(derivable_impls::DERIVABLE_IMPLS),
LintId::of(derive::DERIVE_HASH_XOR_EQ),
LintId::of(derive::DERIVE_ORD_XOR_PARTIAL_ORD),
LintId::of(derive::DERIVE_PARTIAL_EQ_WITHOUT_EQ),
LintId::of(disallowed_methods::DISALLOWED_METHODS),
LintId::of(disallowed_names::DISALLOWED_NAMES),
LintId::of(disallowed_types::DISALLOWED_TYPES),

2
clippy_lints/src/lib.register_lints.rs
View file

@ -60,6 +60,7 @@ store.register_lints(&[
booleans::NONMINIMAL_BOOL,
booleans::OVERLY_COMPLEX_BOOL_EXPR,
borrow_deref_ref::BORROW_DEREF_REF,
box_default::BOX_DEFAULT,
cargo::CARGO_COMMON_METADATA,
cargo::MULTIPLE_CRATE_VERSIONS,
cargo::NEGATIVE_FEATURE_NAMES,
@ -159,6 +160,7 @@ store.register_lints(&[
format::USELESS_FORMAT,
format_args::FORMAT_IN_FORMAT_ARGS,
format_args::TO_STRING_IN_FORMAT_ARGS,
format_args::UNINLINED_FORMAT_ARGS,
format_impl::PRINT_IN_FORMAT_IMPL,
format_impl::RECURSIVE_FORMAT_IMPL,
format_push_string::FORMAT_PUSH_STRING,

3
clippy_lints/src/lib.register_nursery.rs
View file

@ -6,6 +6,7 @@ store.register_group(true, "clippy::nursery", Some("clippy_nursery"), vec![
LintId::of(attrs::EMPTY_LINE_AFTER_OUTER_ATTR),
LintId::of(cognitive_complexity::COGNITIVE_COMPLEXITY),
LintId::of(copies::BRANCHES_SHARING_CODE),
LintId::of(derive::DERIVE_PARTIAL_EQ_WITHOUT_EQ),
LintId::of(equatable_if_let::EQUATABLE_IF_LET),
LintId::of(fallible_impl_from::FALLIBLE_IMPL_FROM),
LintId::of(floating_point_arithmetic::IMPRECISE_FLOPS),
@ -30,6 +31,8 @@ store.register_group(true, "clippy::nursery", Some("clippy_nursery"), vec![
LintId::of(strings::STRING_LIT_AS_BYTES),
LintId::of(suspicious_operation_groupings::SUSPICIOUS_OPERATION_GROUPINGS),
LintId::of(trailing_empty_array::TRAILING_EMPTY_ARRAY),
LintId::of(trait_bounds::TRAIT_DUPLICATION_IN_BOUNDS),
LintId::of(trait_bounds::TYPE_REPETITION_IN_BOUNDS),
LintId::of(transmute::TRANSMUTE_UNDEFINED_REPR),
LintId::of(unused_peekable::UNUSED_PEEKABLE),
LintId::of(unused_rounding::UNUSED_ROUNDING),

3
clippy_lints/src/lib.register_pedantic.rs
View file

@ -29,6 +29,7 @@ store.register_group(true, "clippy::pedantic", Some("clippy_pedantic"), vec![
LintId::of(eta_reduction::REDUNDANT_CLOSURE_FOR_METHOD_CALLS),
LintId::of(excessive_bools::FN_PARAMS_EXCESSIVE_BOOLS),
LintId::of(excessive_bools::STRUCT_EXCESSIVE_BOOLS),
LintId::of(format_args::UNINLINED_FORMAT_ARGS),
LintId::of(functions::MUST_USE_CANDIDATE),
LintId::of(functions::TOO_MANY_LINES),
LintId::of(if_not_else::IF_NOT_ELSE),
@ -88,8 +89,6 @@ store.register_group(true, "clippy::pedantic", Some("clippy_pedantic"), vec![
LintId::of(return_self_not_must_use::RETURN_SELF_NOT_MUST_USE),
LintId::of(semicolon_if_nothing_returned::SEMICOLON_IF_NOTHING_RETURNED),
LintId::of(strings::STRING_ADD_ASSIGN),
LintId::of(trait_bounds::TRAIT_DUPLICATION_IN_BOUNDS),
LintId::of(trait_bounds::TYPE_REPETITION_IN_BOUNDS),
LintId::of(transmute::TRANSMUTE_PTR_TO_PTR),
LintId::of(types::LINKEDLIST),
LintId::of(types::OPTION_OPTION),

1
clippy_lints/src/lib.register_perf.rs
View file

@ -3,6 +3,7 @@
// Manual edits will be overwritten.
store.register_group(true, "clippy::perf", Some("clippy_perf"), vec![
LintId::of(box_default::BOX_DEFAULT),
LintId::of(entry::MAP_ENTRY),
LintId::of(escape::BOXED_LOCAL),
LintId::of(format_args::FORMAT_IN_FORMAT_ARGS),

1
clippy_lints/src/lib.register_style.rs
View file

@ -15,7 +15,6 @@ store.register_group(true, "clippy::style", Some("clippy_style"), vec![
LintId::of(default::FIELD_REASSIGN_WITH_DEFAULT),
LintId::of(default_instead_of_iter_empty::DEFAULT_INSTEAD_OF_ITER_EMPTY),
LintId::of(dereference::NEEDLESS_BORROW),
LintId::of(derive::DERIVE_PARTIAL_EQ_WITHOUT_EQ),
LintId::of(disallowed_methods::DISALLOWED_METHODS),
LintId::of(disallowed_names::DISALLOWED_NAMES),
LintId::of(disallowed_types::DISALLOWED_TYPES),

45
clippy_lints/src/lib.rs
View file

@ -31,6 +31,7 @@ extern crate rustc_data_structures;
extern crate rustc_driver;
extern crate rustc_errors;
extern crate rustc_hir;
extern crate rustc_hir_analysis;
extern crate rustc_hir_pretty;
extern crate rustc_index;
extern crate rustc_infer;
@ -43,7 +44,6 @@ extern crate rustc_session;
extern crate rustc_span;
extern crate rustc_target;
extern crate rustc_trait_selection;
extern crate rustc_hir_analysis;
#[macro_use]
extern crate clippy_utils;
@ -180,6 +180,7 @@ mod bool_assert_comparison;
mod bool_to_int_with_if;
mod booleans;
mod borrow_deref_ref;
mod box_default;
mod cargo;
mod casts;
mod checked_conversions;
@ -416,8 +417,7 @@ pub fn register_pre_expansion_lints(store: &mut rustc_lint::LintStore, sess: &Se
let msrv = conf.msrv.as_ref().and_then(|s| {
parse_msrv(s, None, None).or_else(|| {
sess.err(&format!(
"error reading Clippy's configuration file. `{}` is not a valid Rust version",
s
"error reading Clippy's configuration file. `{s}` is not a valid Rust version"
));
None
})
@ -433,8 +433,7 @@ fn read_msrv(conf: &Conf, sess: &Session) -> Option<RustcVersion> {
let clippy_msrv = conf.msrv.as_ref().and_then(|s| {
parse_msrv(s, None, None).or_else(|| {
sess.err(&format!(
"error reading Clippy's configuration file. `{}` is not a valid Rust version",
s
"error reading Clippy's configuration file. `{s}` is not a valid Rust version"
));
None
})
@ -445,8 +444,7 @@ fn read_msrv(conf: &Conf, sess: &Session) -> Option<RustcVersion> {
// if both files have an msrv, let's compare them and emit a warning if they differ
if clippy_msrv != cargo_msrv {
sess.warn(&format!(
"the MSRV in `clippy.toml` and `Cargo.toml` differ; using `{}` from `clippy.toml`",
clippy_msrv
"the MSRV in `clippy.toml` and `Cargo.toml` differ; using `{clippy_msrv}` from `clippy.toml`"
));
}
@ -465,7 +463,7 @@ pub fn read_conf(sess: &Session) -> Conf {
Ok(Some(path)) => path,
Ok(None) => return Conf::default(),
Err(error) => {
sess.struct_err(&format!("error finding Clippy's configuration file: {}", error))
sess.struct_err(&format!("error finding Clippy's configuration file: {error}"))
.emit();
return Conf::default();
},
@ -535,8 +533,8 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
store.register_late_pass(|_| Box::new(utils::internal_lints::CompilerLintFunctions::new()));
store.register_late_pass(|_| Box::new(utils::internal_lints::IfChainStyle));
store.register_late_pass(|_| Box::new(utils::internal_lints::InvalidPaths));
store.register_late_pass(|_| Box::new(utils::internal_lints::InterningDefinedSymbol::default()));
store.register_late_pass(|_| Box::new(utils::internal_lints::LintWithoutLintPass::default()));
store.register_late_pass(|_| Box::<utils::internal_lints::InterningDefinedSymbol>::default());
store.register_late_pass(|_| Box::<utils::internal_lints::LintWithoutLintPass>::default());
store.register_late_pass(|_| Box::new(utils::internal_lints::MatchTypeOnDiagItem));
store.register_late_pass(|_| Box::new(utils::internal_lints::OuterExpnDataPass));
store.register_late_pass(|_| Box::new(utils::internal_lints::MsrvAttrImpl));
@ -629,10 +627,10 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
msrv,
))
});
store.register_late_pass(|_| Box::new(shadow::Shadow::default()));
store.register_late_pass(|_| Box::<shadow::Shadow>::default());
store.register_late_pass(|_| Box::new(unit_types::UnitTypes));
store.register_late_pass(|_| Box::new(loops::Loops));
store.register_late_pass(|_| Box::new(main_recursion::MainRecursion::default()));
store.register_late_pass(|_| Box::<main_recursion::MainRecursion>::default());
store.register_late_pass(|_| Box::new(lifetimes::Lifetimes));
store.register_late_pass(|_| Box::new(entry::HashMapPass));
store.register_late_pass(|_| Box::new(minmax::MinMaxPass));
@ -666,7 +664,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
store.register_late_pass(|_| Box::new(format::UselessFormat));
store.register_late_pass(|_| Box::new(swap::Swap));
store.register_late_pass(|_| Box::new(overflow_check_conditional::OverflowCheckConditional));
store.register_late_pass(|_| Box::new(new_without_default::NewWithoutDefault::default()));
store.register_late_pass(|_| Box::<new_without_default::NewWithoutDefault>::default());
let disallowed_names = conf.disallowed_names.iter().cloned().collect::<FxHashSet<_>>();
store.register_late_pass(move |_| Box::new(disallowed_names::DisallowedNames::new(disallowed_names.clone())));
let too_many_arguments_threshold = conf.too_many_arguments_threshold;
@ -705,7 +703,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
store.register_late_pass(|_| Box::new(ref_option_ref::RefOptionRef));
store.register_late_pass(|_| Box::new(infinite_iter::InfiniteIter));
store.register_late_pass(|_| Box::new(inline_fn_without_body::InlineFnWithoutBody));
store.register_late_pass(|_| Box::new(useless_conversion::UselessConversion::default()));
store.register_late_pass(|_| Box::<useless_conversion::UselessConversion>::default());
store.register_late_pass(|_| Box::new(implicit_hasher::ImplicitHasher));
store.register_late_pass(|_| Box::new(fallible_impl_from::FallibleImplFrom));
store.register_late_pass(|_| Box::new(question_mark::QuestionMark));
@ -775,7 +773,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
upper_case_acronyms_aggressive,
))
});
store.register_late_pass(|_| Box::new(default::Default::default()));
store.register_late_pass(|_| Box::<default::Default>::default());
store.register_late_pass(move |_| Box::new(unused_self::UnusedSelf::new(avoid_breaking_exported_api)));
store.register_late_pass(|_| Box::new(mutable_debug_assertion::DebugAssertWithMutCall));
store.register_late_pass(|_| Box::new(exit::Exit));
@ -798,7 +796,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
store.register_early_pass(|| Box::new(option_env_unwrap::OptionEnvUnwrap));
let warn_on_all_wildcard_imports = conf.warn_on_all_wildcard_imports;
store.register_late_pass(move |_| Box::new(wildcard_imports::WildcardImports::new(warn_on_all_wildcard_imports)));
store.register_late_pass(|_| Box::new(redundant_pub_crate::RedundantPubCrate::default()));
store.register_late_pass(|_| Box::<redundant_pub_crate::RedundantPubCrate>::default());
store.register_late_pass(|_| Box::new(unnamed_address::UnnamedAddress));
store.register_late_pass(move |_| Box::new(dereference::Dereferencing::new(msrv)));
store.register_late_pass(|_| Box::new(option_if_let_else::OptionIfLetElse));
@ -816,7 +814,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
});
let macro_matcher = conf.standard_macro_braces.iter().cloned().collect::<FxHashSet<_>>();
store.register_early_pass(move || Box::new(nonstandard_macro_braces::MacroBraces::new(&macro_matcher)));
store.register_late_pass(|_| Box::new(macro_use::MacroUseImports::default()));
store.register_late_pass(|_| Box::<macro_use::MacroUseImports>::default());
store.register_late_pass(|_| Box::new(pattern_type_mismatch::PatternTypeMismatch));
store.register_late_pass(|_| Box::new(unwrap_in_result::UnwrapInResult));
store.register_late_pass(|_| Box::new(semicolon_if_nothing_returned::SemicolonIfNothingReturned));
@ -829,7 +827,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
store.register_late_pass(|_| Box::new(strings::StrToString));
store.register_late_pass(|_| Box::new(strings::StringToString));
store.register_late_pass(|_| Box::new(zero_sized_map_values::ZeroSizedMapValues));
store.register_late_pass(|_| Box::new(vec_init_then_push::VecInitThenPush::default()));
store.register_late_pass(|_| Box::<vec_init_then_push::VecInitThenPush>::default());
store.register_late_pass(|_| Box::new(redundant_slicing::RedundantSlicing));
store.register_late_pass(|_| Box::new(from_str_radix_10::FromStrRadix10));
store.register_late_pass(move |_| Box::new(if_then_some_else_none::IfThenSomeElseNone::new(msrv)));
@ -857,7 +855,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
))
});
store.register_late_pass(move |_| Box::new(undocumented_unsafe_blocks::UndocumentedUnsafeBlocks));
store.register_late_pass(move |_| Box::new(format_args::FormatArgs));
store.register_late_pass(move |_| Box::new(format_args::FormatArgs::new(msrv)));
store.register_late_pass(|_| Box::new(trailing_empty_array::TrailingEmptyArray));
store.register_early_pass(|| Box::new(octal_escapes::OctalEscapes));
store.register_late_pass(|_| Box::new(needless_late_init::NeedlessLateInit));
@ -867,7 +865,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
store.register_late_pass(move |_| Box::new(manual_bits::ManualBits::new(msrv)));
store.register_late_pass(|_| Box::new(default_union_representation::DefaultUnionRepresentation));
store.register_early_pass(|| Box::new(doc_link_with_quotes::DocLinkWithQuotes));
store.register_late_pass(|_| Box::new(only_used_in_recursion::OnlyUsedInRecursion::default()));
store.register_late_pass(|_| Box::<only_used_in_recursion::OnlyUsedInRecursion>::default());
let allow_dbg_in_tests = conf.allow_dbg_in_tests;
store.register_late_pass(move |_| Box::new(dbg_macro::DbgMacro::new(allow_dbg_in_tests)));
let cargo_ignore_publish = conf.cargo_ignore_publish;
@ -876,7 +874,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
ignore_publish: cargo_ignore_publish,
})
});
store.register_late_pass(|_| Box::new(write::Write::default()));
store.register_late_pass(|_| Box::<write::Write>::default());
store.register_early_pass(|| Box::new(crate_in_macro_def::CrateInMacroDef));
store.register_early_pass(|| Box::new(empty_structs_with_brackets::EmptyStructsWithBrackets));
store.register_late_pass(|_| Box::new(unnecessary_owned_empty_strings::UnnecessaryOwnedEmptyStrings));
@ -886,7 +884,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
store.register_late_pass(move |_| Box::new(large_include_file::LargeIncludeFile::new(max_include_file_size)));
store.register_late_pass(|_| Box::new(strings::TrimSplitWhitespace));
store.register_late_pass(|_| Box::new(rc_clone_in_vec_init::RcCloneInVecInit));
store.register_early_pass(|| Box::new(duplicate_mod::DuplicateMod::default()));
store.register_early_pass(|| Box::<duplicate_mod::DuplicateMod>::default());
store.register_early_pass(|| Box::new(unused_rounding::UnusedRounding));
store.register_early_pass(move || Box::new(almost_complete_letter_range::AlmostCompleteLetterRange::new(msrv)));
store.register_late_pass(|_| Box::new(swap_ptr_to_ref::SwapPtrToRef));
@ -898,13 +896,14 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
let verbose_bit_mask_threshold = conf.verbose_bit_mask_threshold;
store.register_late_pass(move |_| Box::new(operators::Operators::new(verbose_bit_mask_threshold)));
store.register_late_pass(|_| Box::new(invalid_utf8_in_unchecked::InvalidUtf8InUnchecked));
store.register_late_pass(|_| Box::new(std_instead_of_core::StdReexports::default()));
store.register_late_pass(|_| Box::<std_instead_of_core::StdReexports>::default());
store.register_late_pass(|_| Box::new(manual_instant_elapsed::ManualInstantElapsed));
store.register_late_pass(|_| Box::new(partialeq_to_none::PartialeqToNone));
store.register_late_pass(|_| Box::new(manual_string_new::ManualStringNew));
store.register_late_pass(|_| Box::new(unused_peekable::UnusedPeekable));
store.register_early_pass(|| Box::new(multi_assignments::MultiAssignments));
store.register_late_pass(|_| Box::new(bool_to_int_with_if::BoolToIntWithIf));
store.register_late_pass(|_| Box::new(box_default::BoxDefault));
// add lints here, do not remove this comment, it's used in `new_lint`
}

6
clippy_lints/src/lifetimes.rs
View file

@ -9,8 +9,8 @@ use rustc_hir::intravisit::{
use rustc_hir::FnRetTy::Return;
use rustc_hir::{
BareFnTy, BodyId, FnDecl, GenericArg, GenericBound, GenericParam, GenericParamKind, Generics, Impl, ImplItem,
ImplItemKind, Item, ItemKind, LangItem, Lifetime, LifetimeName, ParamName, PolyTraitRef, PredicateOrigin,
TraitFn, TraitItem, TraitItemKind, Ty, TyKind, WherePredicate,
ImplItemKind, Item, ItemKind, LangItem, Lifetime, LifetimeName, ParamName, PolyTraitRef, PredicateOrigin, TraitFn,
TraitItem, TraitItemKind, Ty, TyKind, WherePredicate,
};
use rustc_lint::{LateContext, LateLintPass};
use rustc_middle::hir::nested_filter as middle_nested_filter;
@ -276,7 +276,7 @@ fn could_use_elision<'tcx>(
let mut checker = BodyLifetimeChecker {
lifetimes_used_in_body: false,
};
checker.visit_expr(&body.value);
checker.visit_expr(body.value);
if checker.lifetimes_used_in_body {
return false;
}

2
clippy_lints/src/literal_representation.rs
View file

@ -478,7 +478,7 @@ impl DecimalLiteralRepresentation {
if num_lit.radix == Radix::Decimal;
if val >= u128::from(self.threshold);
then {
let hex = format!("{:#X}", val);
let hex = format!("{val:#X}");
let num_lit = NumericLiteral::new(&hex, num_lit.suffix, false);
let _ = Self::do_lint(num_lit.integer).map_err(|warning_type| {
warning_type.display(num_lit.format(), cx, lit.span);

14
clippy_lints/src/loops/explicit_counter_loop.rs
View file

@ -44,11 +44,10 @@ pub(super) fn check<'tcx>(
cx,
EXPLICIT_COUNTER_LOOP,
span,
&format!("the variable `{}` is used as a loop counter", name),
&format!("the variable `{name}` is used as a loop counter"),
"consider using",
format!(
"for ({}, {}) in {}.enumerate()",
name,
"for ({name}, {}) in {}.enumerate()",
snippet_with_applicability(cx, pat.span, "item", &mut applicability),
make_iterator_snippet(cx, arg, &mut applicability),
),
@ -65,24 +64,21 @@ pub(super) fn check<'tcx>(
cx,
EXPLICIT_COUNTER_LOOP,
span,
&format!("the variable `{}` is used as a loop counter", name),
&format!("the variable `{name}` is used as a loop counter"),
|diag| {
diag.span_suggestion(
span,
"consider using",
format!(
"for ({}, {}) in (0_{}..).zip({})",
name,
"for ({name}, {}) in (0_{int_name}..).zip({})",
snippet_with_applicability(cx, pat.span, "item", &mut applicability),
int_name,
make_iterator_snippet(cx, arg, &mut applicability),
),
applicability,
);
diag.note(&format!(
"`{}` is of type `{}`, making it ineligible for `Iterator::enumerate`",
name, int_name
"`{name}` is of type `{int_name}`, making it ineligible for `Iterator::enumerate`"
));
},
);

2
clippy_lints/src/loops/explicit_iter_loop.rs
View file

@ -41,7 +41,7 @@ pub(super) fn check(cx: &LateContext<'_>, self_arg: &Expr<'_>, arg: &Expr<'_>, m
"it is more concise to loop over references to containers instead of using explicit \
iteration methods",
"to write this more concisely, try",
format!("&{}{}", muta, object),
format!("&{muta}{object}"),
applicability,
);
}

4
clippy_lints/src/loops/for_kv_map.rs
View file

@ -38,7 +38,7 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, pat: &'tcx Pat<'_>, arg: &'tcx
cx,
FOR_KV_MAP,
arg_span,
&format!("you seem to want to iterate on a map's {}s", kind),
&format!("you seem to want to iterate on a map's {kind}s"),
|diag| {
let map = sugg::Sugg::hir(cx, arg, "map");
multispan_sugg(
@ -46,7 +46,7 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, pat: &'tcx Pat<'_>, arg: &'tcx
"use the corresponding method",
vec![
(pat_span, snippet(cx, new_pat_span, kind).into_owned()),
(arg_span, format!("{}.{}s{}()", map.maybe_par(), kind, mutbl)),
(arg_span, format!("{}.{kind}s{mutbl}()", map.maybe_par())),
],
);
},

2
clippy_lints/src/loops/manual_flatten.rs
View file

@ -38,7 +38,7 @@ pub(super) fn check<'tcx>(
then {
let if_let_type = if some_ctor { "Some" } else { "Ok" };
// Prepare the error message
let msg = format!("unnecessary `if let` since only the `{}` variant of the iterator element is used", if_let_type);
let msg = format!("unnecessary `if let` since only the `{if_let_type}` variant of the iterator element is used");
// Prepare the help message
let mut applicability = Applicability::MaybeIncorrect;

13
clippy_lints/src/loops/manual_memcpy.rs
View file

@ -177,13 +177,7 @@ fn build_manual_memcpy_suggestion<'tcx>(
let dst = if dst_offset == sugg::EMPTY && dst_limit == sugg::EMPTY {
dst_base_str
} else {
format!(
"{}[{}..{}]",
dst_base_str,
dst_offset.maybe_par(),
dst_limit.maybe_par()
)
.into()
format!("{dst_base_str}[{}..{}]", dst_offset.maybe_par(), dst_limit.maybe_par()).into()
};
let method_str = if is_copy(cx, elem_ty) {
@ -193,10 +187,7 @@ fn build_manual_memcpy_suggestion<'tcx>(
};
format!(
"{}.{}(&{}[{}..{}]);",
dst,
method_str,
src_base_str,
"{dst}.{method_str}(&{src_base_str}[{}..{}]);",
src_offset.maybe_par(),
src_limit.maybe_par()
)

2
clippy_lints/src/loops/mod.rs
View file

@ -635,7 +635,7 @@ declare_clippy_lint! {
/// arr.into_iter().find(|&el| el == 1)
/// }
/// ```
#[clippy::version = "1.61.0"]
#[clippy::version = "1.64.0"]
pub MANUAL_FIND,
complexity,
"manual implementation of `Iterator::find`"

10
clippy_lints/src/loops/mut_range_bound.rs
View file

@ -4,11 +4,11 @@ use clippy_utils::{get_enclosing_block, higher, path_to_local};
use if_chain::if_chain;
use rustc_hir::intravisit::{self, Visitor};
use rustc_hir::{BindingAnnotation, Expr, ExprKind, HirId, Node, PatKind};
use rustc_hir_analysis::expr_use_visitor::{Delegate, ExprUseVisitor, PlaceBase, PlaceWithHirId};
use rustc_infer::infer::TyCtxtInferExt;
use rustc_lint::LateContext;
use rustc_middle::{mir::FakeReadCause, ty};
use rustc_span::source_map::Span;
use rustc_hir_analysis::expr_use_visitor::{Delegate, ExprUseVisitor, PlaceBase, PlaceWithHirId};
pub(super) fn check(cx: &LateContext<'_>, arg: &Expr<'_>, body: &Expr<'_>) {
if_chain! {
@ -114,7 +114,13 @@ impl<'tcx> Delegate<'tcx> for MutatePairDelegate<'_, 'tcx> {
}
}
fn fake_read(&mut self, _: &rustc_hir_analysis::expr_use_visitor::PlaceWithHirId<'tcx>, _: FakeReadCause, _: HirId) {}
fn fake_read(
&mut self,
_: &rustc_hir_analysis::expr_use_visitor::PlaceWithHirId<'tcx>,
_: FakeReadCause,
_: HirId,
) {
}
}
impl MutatePairDelegate<'_, '_> {

6
clippy_lints/src/loops/needless_collect.rs
View file

@ -45,7 +45,7 @@ fn check_needless_collect_direct_usage<'tcx>(expr: &'tcx Expr<'_>, cx: &LateCont
let (arg, pred) = contains_arg
.strip_prefix('&')
.map_or(("&x", &*contains_arg), |s| ("x", s));
format!("any(|{}| x == {})", arg, pred)
format!("any(|{arg}| x == {pred})")
}
_ => return,
}
@ -141,9 +141,9 @@ impl IterFunction {
IterFunctionKind::Contains(span) => {
let s = snippet(cx, *span, "..");
if let Some(stripped) = s.strip_prefix('&') {
format!(".any(|x| x == {})", stripped)
format!(".any(|x| x == {stripped})")
} else {
format!(".any(|x| x == *{})", s)
format!(".any(|x| x == *{s})")
}
},
}

10
clippy_lints/src/loops/needless_range_loop.rs
View file

@ -145,7 +145,7 @@ pub(super) fn check<'tcx>(
cx,
NEEDLESS_RANGE_LOOP,
arg.span,
&format!("the loop variable `{}` is used to index `{}`", ident.name, indexed),
&format!("the loop variable `{}` is used to index `{indexed}`", ident.name),
|diag| {
multispan_sugg(
diag,
@ -154,7 +154,7 @@ pub(super) fn check<'tcx>(
(pat.span, format!("({}, <item>)", ident.name)),
(
arg.span,
format!("{}.{}().enumerate(){}{}", indexed, method, method_1, method_2),
format!("{indexed}.{method}().enumerate(){method_1}{method_2}"),
),
],
);
@ -162,16 +162,16 @@ pub(super) fn check<'tcx>(
);
} else {
let repl = if starts_at_zero && take_is_empty {
format!("&{}{}", ref_mut, indexed)
format!("&{ref_mut}{indexed}")
} else {
format!("{}.{}(){}{}", indexed, method, method_1, method_2)
format!("{indexed}.{method}(){method_1}{method_2}")
};
span_lint_and_then(
cx,
NEEDLESS_RANGE_LOOP,
arg.span,
&format!("the loop variable `{}` is only used to index `{}`", ident.name, indexed),
&format!("the loop variable `{}` is only used to index `{indexed}`", ident.name),
|diag| {
multispan_sugg(
diag,

37
clippy_lints/src/loops/never_loop.rs
View file

@ -42,6 +42,7 @@ pub(super) fn check(
}
}
#[derive(Copy, Clone)]
enum NeverLoopResult {
// A break/return always get triggered but not necessarily for the main loop.
AlwaysBreak,
@ -51,8 +52,8 @@ enum NeverLoopResult {
}
#[must_use]
fn absorb_break(arg: &NeverLoopResult) -> NeverLoopResult {
match *arg {
fn absorb_break(arg: NeverLoopResult) -> NeverLoopResult {
match arg {
NeverLoopResult::AlwaysBreak | NeverLoopResult::Otherwise => NeverLoopResult::Otherwise,
NeverLoopResult::MayContinueMainLoop => NeverLoopResult::MayContinueMainLoop,
}
@ -92,19 +93,29 @@ fn combine_branches(b1: NeverLoopResult, b2: NeverLoopResult) -> NeverLoopResult
}
fn never_loop_block(block: &Block<'_>, main_loop_id: HirId) -> NeverLoopResult {
let mut iter = block.stmts.iter().filter_map(stmt_to_expr).chain(block.expr);
let mut iter = block
.stmts
.iter()
.filter_map(stmt_to_expr)
.chain(block.expr.map(|expr| (expr, None)));
never_loop_expr_seq(&mut iter, main_loop_id)
}
fn never_loop_expr_seq<'a, T: Iterator<Item = &'a Expr<'a>>>(es: &mut T, main_loop_id: HirId) -> NeverLoopResult {
es.map(|e| never_loop_expr(e, main_loop_id))
.fold(NeverLoopResult::Otherwise, combine_seq)
fn never_loop_expr_seq<'a, T: Iterator<Item = (&'a Expr<'a>, Option<&'a Block<'a>>)>>(
es: &mut T,
main_loop_id: HirId,
) -> NeverLoopResult {
es.map(|(e, els)| {
let e = never_loop_expr(e, main_loop_id);
els.map_or(e, |els| combine_branches(e, never_loop_block(els, main_loop_id)))
})
.fold(NeverLoopResult::Otherwise, combine_seq)
}
fn stmt_to_expr<'tcx>(stmt: &Stmt<'tcx>) -> Option<&'tcx Expr<'tcx>> {
fn stmt_to_expr<'tcx>(stmt: &Stmt<'tcx>) -> Option<(&'tcx Expr<'tcx>, Option<&'tcx Block<'tcx>>)> {
match stmt.kind {
StmtKind::Semi(e, ..) | StmtKind::Expr(e, ..) => Some(e),
StmtKind::Local(local) => local.init,
StmtKind::Semi(e, ..) | StmtKind::Expr(e, ..) => Some((e, None)),
StmtKind::Local(local) => local.init.map(|init| (init, local.els)),
StmtKind::Item(..) => None,
}
}
@ -139,7 +150,7 @@ fn never_loop_expr(expr: &Expr<'_>, main_loop_id: HirId) -> NeverLoopResult {
| ExprKind::Index(e1, e2) => never_loop_expr_all(&mut [e1, e2].iter().copied(), main_loop_id),
ExprKind::Loop(b, _, _, _) => {
// Break can come from the inner loop so remove them.
absorb_break(&never_loop_block(b, main_loop_id))
absorb_break(never_loop_block(b, main_loop_id))
},
ExprKind::If(e, e2, e3) => {
let e1 = never_loop_expr(e, main_loop_id);
@ -211,9 +222,5 @@ fn for_to_if_let_sugg(cx: &LateContext<'_>, iterator: &Expr<'_>, pat: &Pat<'_>)
let pat_snippet = snippet(cx, pat.span, "_");
let iter_snippet = make_iterator_snippet(cx, iterator, &mut Applicability::Unspecified);
format!(
"if let Some({pat}) = {iter}.next()",
pat = pat_snippet,
iter = iter_snippet
)
format!("if let Some({pat_snippet}) = {iter_snippet}.next()")
}

5
clippy_lints/src/loops/same_item_push.rs
View file

@ -30,10 +30,7 @@ pub(super) fn check<'tcx>(
vec.span,
"it looks like the same item is being pushed into this Vec",
None,
&format!(
"try using vec![{};SIZE] or {}.resize(NEW_SIZE, {})",
item_str, vec_str, item_str
),
&format!("try using vec![{item_str};SIZE] or {vec_str}.resize(NEW_SIZE, {item_str})"),
);
}

5
clippy_lints/src/loops/utils.rs
View file

@ -5,12 +5,12 @@ use rustc_ast::ast::{LitIntType, LitKind};
use rustc_errors::Applicability;
use rustc_hir::intravisit::{walk_expr, walk_local, walk_pat, walk_stmt, Visitor};
use rustc_hir::{BinOpKind, BorrowKind, Expr, ExprKind, HirId, HirIdMap, Local, Mutability, Pat, PatKind, Stmt};
use rustc_hir_analysis::hir_ty_to_ty;
use rustc_lint::LateContext;
use rustc_middle::hir::nested_filter;
use rustc_middle::ty::{self, Ty};
use rustc_span::source_map::Spanned;
use rustc_span::symbol::{sym, Symbol};
use rustc_hir_analysis::hir_ty_to_ty;
use std::iter::Iterator;
#[derive(Debug, PartialEq, Eq)]
@ -344,9 +344,8 @@ pub(super) fn make_iterator_snippet(cx: &LateContext<'_>, arg: &Expr<'_>, applic
_ => arg,
};
format!(
"{}.{}()",
"{}.{method_name}()",
sugg::Sugg::hir_with_applicability(cx, caller, "_", applic_ref).maybe_par(),
method_name,
)
},
_ => format!(

2
clippy_lints/src/loops/while_let_on_iterator.rs
View file

@ -67,7 +67,7 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) {
expr.span.with_hi(scrutinee_expr.span.hi()),
"this loop could be written as a `for` loop",
"try",
format!("for {} in {}{}", loop_var, iterator, by_ref),
format!("for {loop_var} in {iterator}{by_ref}"),
applicability,
);
}

9
clippy_lints/src/macro_use.rs
View file

@ -35,7 +35,8 @@ struct PathAndSpan {
span: Span,
}
/// `MacroRefData` includes the name of the macro.
/// `MacroRefData` includes the name of the macro
/// and the path from `SourceMap::span_to_filename`.
#[derive(Debug, Clone)]
pub struct MacroRefData {
name: String,
@ -189,9 +190,9 @@ impl<'tcx> LateLintPass<'tcx> for MacroUseImports {
let mut suggestions = vec![];
for ((root, span, hir_id), path) in used {
if path.len() == 1 {
suggestions.push((span, format!("{}::{}", root, path[0]), hir_id));
suggestions.push((span, format!("{root}::{}", path[0]), hir_id));
} else {
suggestions.push((span, format!("{}::{{{}}}", root, path.join(", ")), hir_id));
suggestions.push((span, format!("{root}::{{{}}}", path.join(", ")), hir_id));
}
}
@ -199,7 +200,7 @@ impl<'tcx> LateLintPass<'tcx> for MacroUseImports {
// such as `std::prelude::v1::foo` or some other macro that expands to an import.
if self.mac_refs.is_empty() {
for (span, import, hir_id) in suggestions {
let help = format!("use {};", import);
let help = format!("use {import};");
span_lint_hir_and_then(
cx,
MACRO_USE_IMPORTS,

6
clippy_lints/src/manual_async_fn.rs
View file

@ -74,11 +74,11 @@ impl<'tcx> LateLintPass<'tcx> for ManualAsyncFn {
if let Some(ret_pos) = position_before_rarrow(&header_snip);
if let Some((ret_sugg, ret_snip)) = suggested_ret(cx, output);
then {
let help = format!("make the function `async` and {}", ret_sugg);
let help = format!("make the function `async` and {ret_sugg}");
diag.span_suggestion(
header_span,
&help,
format!("async {}{}", &header_snip[..ret_pos], ret_snip),
format!("async {}{ret_snip}", &header_snip[..ret_pos]),
Applicability::MachineApplicable
);
@ -196,7 +196,7 @@ fn suggested_ret(cx: &LateContext<'_>, output: &Ty<'_>) -> Option<(&'static str,
},
_ => {
let sugg = "return the output of the future directly";
snippet_opt(cx, output.span).map(|snip| (sugg, format!(" -> {}", snip)))
snippet_opt(cx, output.span).map(|snip| (sugg, format!(" -> {snip}")))
},
}
}

4
clippy_lints/src/manual_non_exhaustive.rs
View file

@ -133,7 +133,7 @@ impl EarlyLintPass for ManualNonExhaustiveStruct {
diag.span_suggestion(
header_span,
"add the attribute",
format!("#[non_exhaustive] {}", snippet),
format!("#[non_exhaustive] {snippet}"),
Applicability::Unspecified,
);
}
@ -207,7 +207,7 @@ impl<'tcx> LateLintPass<'tcx> for ManualNonExhaustiveEnum {
diag.span_suggestion(
header_span,
"add the attribute",
format!("#[non_exhaustive] {}", snippet),
format!("#[non_exhaustive] {snippet}"),
Applicability::Unspecified,
);
}

2
clippy_lints/src/manual_rem_euclid.rs
View file

@ -27,7 +27,7 @@ declare_clippy_lint! {
/// let x: i32 = 24;
/// let rem = x.rem_euclid(4);
/// ```
#[clippy::version = "1.63.0"]
#[clippy::version = "1.64.0"]
pub MANUAL_REM_EUCLID,
complexity,
"manually reimplementing `rem_euclid`"

16
clippy_lints/src/manual_retain.rs
View file

@ -43,7 +43,7 @@ declare_clippy_lint! {
/// let mut vec = vec![0, 1, 2];
/// vec.retain(|x| x % 2 == 0);
/// ```
#[clippy::version = "1.63.0"]
#[clippy::version = "1.64.0"]
pub MANUAL_RETAIN,
perf,
"`retain()` is simpler and the same functionalitys"
@ -153,7 +153,7 @@ fn suggest(cx: &LateContext<'_>, parent_expr: &hir::Expr<'_>, left_expr: &hir::E
&& let [filter_params] = filter_body.params
&& let Some(sugg) = match filter_params.pat.kind {
hir::PatKind::Binding(_, _, filter_param_ident, None) => {
Some(format!("{}.retain(|{}| {})", snippet(cx, left_expr.span, ".."), filter_param_ident, snippet(cx, filter_body.value.span, "..")))
Some(format!("{}.retain(|{filter_param_ident}| {})", snippet(cx, left_expr.span, ".."), snippet(cx, filter_body.value.span, "..")))
},
hir::PatKind::Tuple([key_pat, value_pat], _) => {
make_sugg(cx, key_pat, value_pat, left_expr, filter_body)
@ -161,7 +161,7 @@ fn suggest(cx: &LateContext<'_>, parent_expr: &hir::Expr<'_>, left_expr: &hir::E
hir::PatKind::Ref(pat, _) => {
match pat.kind {
hir::PatKind::Binding(_, _, filter_param_ident, None) => {
Some(format!("{}.retain(|{}| {})", snippet(cx, left_expr.span, ".."), filter_param_ident, snippet(cx, filter_body.value.span, "..")))
Some(format!("{}.retain(|{filter_param_ident}| {})", snippet(cx, left_expr.span, ".."), snippet(cx, filter_body.value.span, "..")))
},
_ => None
}
@ -190,23 +190,19 @@ fn make_sugg(
match (&key_pat.kind, &value_pat.kind) {
(hir::PatKind::Binding(_, _, key_param_ident, None), hir::PatKind::Binding(_, _, value_param_ident, None)) => {
Some(format!(
"{}.retain(|{}, &mut {}| {})",
"{}.retain(|{key_param_ident}, &mut {value_param_ident}| {})",
snippet(cx, left_expr.span, ".."),
key_param_ident,
value_param_ident,
snippet(cx, filter_body.value.span, "..")
))
},
(hir::PatKind::Binding(_, _, key_param_ident, None), hir::PatKind::Wild) => Some(format!(
"{}.retain(|{}, _| {})",
"{}.retain(|{key_param_ident}, _| {})",
snippet(cx, left_expr.span, ".."),
key_param_ident,
snippet(cx, filter_body.value.span, "..")
)),
(hir::PatKind::Wild, hir::PatKind::Binding(_, _, value_param_ident, None)) => Some(format!(
"{}.retain(|_, &mut {}| {})",
"{}.retain(|_, &mut {value_param_ident}| {})",
snippet(cx, left_expr.span, ".."),
value_param_ident,
snippet(cx, filter_body.value.span, "..")
)),
_ => None,

9
clippy_lints/src/manual_strip.rs
View file

@ -108,15 +108,14 @@ impl<'tcx> LateLintPass<'tcx> for ManualStrip {
};
let test_span = expr.span.until(then.span);
span_lint_and_then(cx, MANUAL_STRIP, strippings[0], &format!("stripping a {} manually", kind_word), |diag| {
diag.span_note(test_span, &format!("the {} was tested here", kind_word));
span_lint_and_then(cx, MANUAL_STRIP, strippings[0], &format!("stripping a {kind_word} manually"), |diag| {
diag.span_note(test_span, &format!("the {kind_word} was tested here"));
multispan_sugg(
diag,
&format!("try using the `strip_{}` method", kind_word),
&format!("try using the `strip_{kind_word}` method"),
vec![(test_span,
format!("if let Some(<stripped>) = {}.strip_{}({}) ",
format!("if let Some(<stripped>) = {}.strip_{kind_word}({}) ",
snippet(cx, target_arg.span, ".."),
kind_word,
snippet(cx, pattern.span, "..")))]
.into_iter().chain(strippings.into_iter().map(|span| (span, "<stripped>".into()))),
);

5
clippy_lints/src/map_unit_fn.rs
View file

@ -194,10 +194,7 @@ fn let_binding_name(cx: &LateContext<'_>, var_arg: &hir::Expr<'_>) -> String {
#[must_use]
fn suggestion_msg(function_type: &str, map_type: &str) -> String {
format!(
"called `map(f)` on an `{0}` value where `f` is a {1} that returns the unit type `()`",
map_type, function_type
)
format!("called `map(f)` on an `{map_type}` value where `f` is a {function_type} that returns the unit type `()`")
}
fn lint_map_unit_fn(

6
clippy_lints/src/match_result_ok.rs
View file

@ -70,9 +70,7 @@ impl<'tcx> LateLintPass<'tcx> for MatchResultOk {
let some_expr_string = snippet_with_applicability(cx, y[0].span, "", &mut applicability);
let trimmed_ok = snippet_with_applicability(cx, let_expr.span.until(ok_path.ident.span), "", &mut applicability);
let sugg = format!(
"{} let Ok({}) = {}",
ifwhile,
some_expr_string,
"{ifwhile} let Ok({some_expr_string}) = {}",
trimmed_ok.trim().trim_end_matches('.'),
);
span_lint_and_sugg(
@ -80,7 +78,7 @@ impl<'tcx> LateLintPass<'tcx> for MatchResultOk {
MATCH_RESULT_OK,
expr.span.with_hi(let_expr.span.hi()),
"matching on `Some` with `ok()` is redundant",
&format!("consider matching on `Ok({})` and removing the call to `ok` instead", some_expr_string),
&format!("consider matching on `Ok({some_expr_string})` and removing the call to `ok` instead"),
sugg,
applicability,
);

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