113 lines
1.9 KiB
Rust
113 lines
1.9 KiB
Rust
//@aux-build:proc_macro_derive.rs
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#![allow(clippy::clone_on_copy, unused)]
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#![allow(clippy::assigning_clones)]
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#![no_main]
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// lint
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struct A(u32);
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impl Clone for A {
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fn clone(&self) -> Self {
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Self(self.0)
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}
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fn clone_from(&mut self, source: &Self) {
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source.clone();
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*self = source.clone();
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}
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}
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impl Copy for A {}
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// do not lint
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struct B(u32);
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impl Clone for B {
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fn clone(&self) -> Self {
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*self
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}
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}
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impl Copy for B {}
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// do not lint derived (clone's implementation is `*self` here anyway)
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#[derive(Clone, Copy)]
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struct C(u32);
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// do not lint derived (fr this time)
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struct D(u32);
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#[automatically_derived]
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impl Clone for D {
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fn clone(&self) -> Self {
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Self(self.0)
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}
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fn clone_from(&mut self, source: &Self) {
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source.clone();
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*self = source.clone();
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}
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}
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impl Copy for D {}
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// do not lint if clone is not manually implemented
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struct E(u32);
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#[automatically_derived]
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impl Clone for E {
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fn clone(&self) -> Self {
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Self(self.0)
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}
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fn clone_from(&mut self, source: &Self) {
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source.clone();
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*self = source.clone();
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}
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}
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impl Copy for E {}
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// lint since clone is not derived
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#[derive(Copy)]
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struct F(u32);
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impl Clone for F {
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fn clone(&self) -> Self {
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Self(self.0)
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}
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fn clone_from(&mut self, source: &Self) {
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source.clone();
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*self = source.clone();
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}
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}
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// do not lint since copy has more restrictive bounds
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#[derive(Eq, PartialEq)]
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struct Uwu<A: Copy>(A);
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impl<A: Copy> Clone for Uwu<A> {
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fn clone(&self) -> Self {
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Self(self.0)
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}
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fn clone_from(&mut self, source: &Self) {
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source.clone();
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*self = source.clone();
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}
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}
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impl<A: std::fmt::Debug + Copy + Clone> Copy for Uwu<A> {}
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// should skip proc macros, see https://github.com/rust-lang/rust-clippy/issues/12788
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#[derive(proc_macro_derive::NonCanonicalClone)]
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pub struct G;
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