rust-clippy/tests/ui/from_over_into.rs

101 lines
1.7 KiB
Rust

#![feature(type_alias_impl_trait)]
#![warn(clippy::from_over_into)]
#![allow(non_local_definitions)]
#![allow(unused)]
// this should throw an error
struct StringWrapper(String);
impl Into<StringWrapper> for String {
fn into(self) -> StringWrapper {
StringWrapper(self)
}
}
struct SelfType(String);
impl Into<SelfType> for String {
fn into(self) -> SelfType {
SelfType(Self::new())
}
}
#[derive(Default)]
struct X;
impl X {
const FOO: &'static str = "a";
}
struct SelfKeywords;
impl Into<SelfKeywords> for X {
fn into(self) -> SelfKeywords {
let _ = Self;
let _ = Self::FOO;
let _: Self = self;
SelfKeywords
}
}
struct ExplicitPaths(bool);
impl core::convert::Into<bool> for crate::ExplicitPaths {
fn into(mut self) -> bool {
let in_closure = || self.0;
self.0 = false;
self.0
}
}
// this is fine
struct A(String);
impl From<String> for A {
fn from(s: String) -> A {
A(s)
}
}
struct PathInExpansion;
impl Into<String> for PathInExpansion {
fn into(self) -> String {
// non self/Self paths in expansions are fine
panic!()
}
}
#[clippy::msrv = "1.40"]
fn msrv_1_40() {
struct FromOverInto<T>(Vec<T>);
impl<T> Into<FromOverInto<T>> for Vec<T> {
fn into(self) -> FromOverInto<T> {
FromOverInto(self)
}
}
}
#[clippy::msrv = "1.41"]
fn msrv_1_41() {
struct FromOverInto<T>(Vec<T>);
impl<T> Into<FromOverInto<T>> for Vec<T> {
fn into(self) -> FromOverInto<T> {
FromOverInto(self)
}
}
}
fn issue_12138() {
struct Hello;
impl Into<()> for Hello {
fn into(self) {}
}
}
fn main() {}