rust/tests/ui/from_over_into_unfixable.rs
2023-08-22 17:18:11 +02:00

50 lines
1.0 KiB
Rust

#![warn(clippy::from_over_into)]
struct InMacro(String);
macro_rules! in_macro {
() => {
Self::new()
};
}
impl Into<InMacro> for String {
//~^ ERROR: an implementation of `From` is preferred since it gives you `Into<_>` for free
fn into(self) -> InMacro {
InMacro(in_macro!())
}
}
struct WeirdUpperSelf;
impl Into<WeirdUpperSelf> for &'static [u8] {
//~^ ERROR: an implementation of `From` is preferred since it gives you `Into<_>` for free
fn into(self) -> WeirdUpperSelf {
let _ = Self::default();
WeirdUpperSelf
}
}
struct ContainsVal;
impl Into<u8> for ContainsVal {
//~^ ERROR: an implementation of `From` is preferred since it gives you `Into<_>` for free
fn into(self) -> u8 {
let val = 1;
val + 1
}
}
pub struct Lval<T>(T);
pub struct Rval<T>(T);
impl<T> Into<Rval<Self>> for Lval<T> {
//~^ ERROR: an implementation of `From` is preferred since it gives you `Into<_>` for free
fn into(self) -> Rval<Self> {
Rval(self)
}
}
fn main() {}