bjoernager/rust
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remove unnecessary to_string and String::new

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This commit is contained in:
Takayuki Maeda 2022-06-13 15:48:40 +09:00
parent c570ab5a0b
commit 77d6176e69
88 changed files with 292 additions and 340 deletions
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2
compiler/rustc_lint/src/array_into_iter.rs
View file

@ -136,7 +136,7 @@ impl<'tcx> LateLintPass<'tcx> for ArrayIntoIter {
diag.span_suggestion(
receiver_arg.span.shrink_to_hi().to(expr.span.shrink_to_hi()),
"or remove `.into_iter()` to iterate by value",
String::new(),
"",
Applicability::MaybeIncorrect,
);
} else if receiver_ty.is_array() {

12
compiler/rustc_lint/src/builtin.rs
View file

@ -993,7 +993,7 @@ fn lint_deprecated_attr(
.span_suggestion_short(
attr.span,
suggestion.unwrap_or("remove this attribute"),
String::new(),
"",
Applicability::MachineApplicable,
)
.emit();
@ -1182,7 +1182,7 @@ impl<'tcx> LateLintPass<'tcx> for InvalidNoMangleItems {
.span_suggestion_short(
no_mangle_attr.span,
"remove this attribute",
String::new(),
"",
// Use of `#[no_mangle]` suggests FFI intent; correct
// fix may be to monomorphize source by hand
Applicability::MaybeIncorrect,
@ -1221,7 +1221,7 @@ impl<'tcx> LateLintPass<'tcx> for InvalidNoMangleItems {
err.span_suggestion(
const_span,
"try a static value",
"pub static".to_owned(),
"pub static",
Applicability::MachineApplicable,
);
err.emit();
@ -1405,7 +1405,7 @@ impl UnreachablePub {
err.span_suggestion(
vis_span,
"consider restricting its visibility",
"pub(crate)".to_owned(),
"pub(crate)",
applicability,
);
if exportable {
@ -1566,7 +1566,7 @@ impl<'tcx> LateLintPass<'tcx> for TypeAliasBounds {
err.span_suggestion(
type_alias_generics.where_clause_span,
"the clause will not be checked when the type alias is used, and should be removed",
String::new(),
"",
Applicability::MachineApplicable,
);
if !suggested_changing_assoc_types {
@ -1830,7 +1830,7 @@ impl EarlyLintPass for EllipsisInclusiveRangePatterns {
});
}
} else {
let replace = "..=".to_owned();
let replace = "..=";
if join.edition() >= Edition::Edition2021 {
let mut err =
rustc_errors::struct_span_err!(cx.sess(), pat.span, E0783, "{}", msg,);

8
compiler/rustc_lint/src/context.rs
View file

@ -718,7 +718,7 @@ pub trait LintContext: Sized {
the macro must produce the documentation as part of its expansion");
}
BuiltinLintDiagnostics::PatternsInFnsWithoutBody(span, ident) => {
db.span_suggestion(span, "remove `mut` from the parameter", ident.to_string(), Applicability::MachineApplicable);
db.span_suggestion(span, "remove `mut` from the parameter", ident, Applicability::MachineApplicable);
}
BuiltinLintDiagnostics::MissingAbi(span, default_abi) => {
db.span_label(span, "ABI should be specified here");
@ -778,7 +778,7 @@ pub trait LintContext: Sized {
// Suggest the most probable if we found one
if let Some(best_match) = find_best_match_for_name(&possibilities, name, None) {
db.span_suggestion(name_span, "did you mean", format!("{best_match}"), Applicability::MaybeIncorrect);
db.span_suggestion(name_span, "did you mean", best_match, Applicability::MaybeIncorrect);
}
},
BuiltinLintDiagnostics::UnexpectedCfg((name, name_span), Some((value, value_span))) => {
@ -805,7 +805,7 @@ pub trait LintContext: Sized {
} else {
db.note(&format!("no expected value for `{name}`"));
if name != sym::feature {
db.span_suggestion(name_span.shrink_to_hi().to(value_span), "remove the value", String::new(), Applicability::MaybeIncorrect);
db.span_suggestion(name_span.shrink_to_hi().to(value_span), "remove the value", "", Applicability::MaybeIncorrect);
}
}
},
@ -852,7 +852,7 @@ pub trait LintContext: Sized {
db.span_suggestion(
deletion_span,
"elide the unused lifetime",
String::new(),
"",
Applicability::MachineApplicable,
);
},

8
compiler/rustc_lint/src/internal.rs
View file

@ -141,7 +141,7 @@ impl<'tcx> LateLintPass<'tcx> for TyTyKind {
.span_suggestion(
span,
"try using `ty::<kind>` directly",
"ty".to_string(),
"ty",
Applicability::MaybeIncorrect, // ty maybe needs an import
)
.emit();
@ -170,7 +170,7 @@ impl<'tcx> LateLintPass<'tcx> for TyTyKind {
.span_suggestion(
path.span,
"try using `ty::<kind>` directly",
"ty".to_string(),
"ty",
Applicability::MaybeIncorrect, // ty maybe needs an import
)
.emit();
@ -188,7 +188,7 @@ impl<'tcx> LateLintPass<'tcx> for TyTyKind {
.span_suggestion(
path.span,
"try using `ty::<kind>` directly",
"ty".to_string(),
"ty",
Applicability::MaybeIncorrect, // ty maybe needs an import
)
.emit();
@ -208,7 +208,7 @@ impl<'tcx> LateLintPass<'tcx> for TyTyKind {
.span_suggestion(
path.span,
"try using `ty::<kind>` directly",
"ty".to_string(),
"ty",
Applicability::MaybeIncorrect, // ty maybe needs an import
)
.emit();

6
compiler/rustc_lint/src/levels.rs
View file

@ -443,7 +443,7 @@ impl<'s> LintLevelsBuilder<'s> {
.span_suggestion(
sp,
"change it to",
new_lint_name.to_string(),
new_lint_name,
Applicability::MachineApplicable,
)
.emit();
@ -516,7 +516,7 @@ impl<'s> LintLevelsBuilder<'s> {
err.span_suggestion(
sp,
"use the new name",
new_name.to_string(),
new_name,
Applicability::MachineApplicable,
);
}
@ -543,7 +543,7 @@ impl<'s> LintLevelsBuilder<'s> {
db.span_suggestion(
sp,
"did you mean",
suggestion.to_string(),
suggestion,
Applicability::MachineApplicable,
);
}

4
compiler/rustc_lint/src/redundant_semicolon.rs
View file

@ -54,9 +54,7 @@ fn maybe_lint_redundant_semis(cx: &EarlyContext<'_>, seq: &mut Option<(Span, boo
} else {
("unnecessary trailing semicolon", "remove this semicolon")
};
lint.build(msg)
.span_suggestion(span, rem, String::new(), Applicability::MaybeIncorrect)
.emit();
lint.build(msg).span_suggestion(span, rem, "", Applicability::MaybeIncorrect).emit();
});
}
}

2
compiler/rustc_lint/src/unused.rs
View file

@ -160,7 +160,7 @@ impl<'tcx> LateLintPass<'tcx> for UnusedResults {
lint.span_suggestion_verbose(
expr.span.shrink_to_lo(),
"use `let _ = ...` to ignore the resulting value",
"let _ = ".to_string(),
"let _ = ",
Applicability::MachineApplicable,
);
lint.emit();