use clippy_utils::diagnostics::span_lint_and_help;
use clippy_utils::source::{snippet, snippet_with_applicability};
-use clippy_utils::{in_macro, SpanlessHash};
+use clippy_utils::SpanlessHash;
use if_chain::if_chain;
use rustc_data_structures::fx::FxHashMap;
use rustc_data_structures::unhash::UnhashMap;
/// ```rust
/// pub fn foo<T>(t: T) where T: Copy + Clone {}
/// ```
+ #[clippy::version = "1.38.0"]
pub TYPE_REPETITION_IN_BOUNDS,
pedantic,
"Types are repeated unnecessary in trait bounds use `+` instead of using `T: _, T: _`"
/// ```rust
/// fn func<T>(arg: T) where T: Clone + Default {}
/// ```
+ #[clippy::version = "1.47.0"]
pub TRAIT_DUPLICATION_IN_BOUNDS,
pedantic,
"Check if the same trait bounds are specified twice during a function declaration"
impl TraitBounds {
fn check_type_repetition(self, cx: &LateContext<'_>, gen: &'_ Generics<'_>) {
- if in_macro(gen.span) {
+ if gen.span.from_expansion() {
return;
}
let hash = |ty| -> u64 {
if_chain! {
if let WherePredicate::BoundPredicate(ref p) = bound;
if p.bounds.len() as u64 <= self.max_trait_bounds;
- if !in_macro(p.span);
+ if !p.span.from_expansion();
let h = hash(p.bounded_ty);
if let Some(ref v) = map.insert(h, p.bounds.iter().collect::<Vec<_>>());
}
fn check_trait_bound_duplication(cx: &LateContext<'_>, gen: &'_ Generics<'_>) {
- if in_macro(gen.span) || gen.params.is_empty() || gen.where_clause.predicates.is_empty() {
+ if gen.span.from_expansion() || gen.params.is_empty() || gen.where_clause.predicates.is_empty() {
return;
}
for predicate in gen.where_clause.predicates {
if_chain! {
if let WherePredicate::BoundPredicate(ref bound_predicate) = predicate;
- if !in_macro(bound_predicate.span);
+ if !bound_predicate.span.from_expansion();
if let TyKind::Path(QPath::Resolved(_, Path { segments, .. })) = bound_predicate.bounded_ty.kind;
if let Some(segment) = segments.first();
if let Some(trait_resolutions_direct) = map.get(&segment.ident);