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|
#![warn(clippy::manual_async_fn)]
#![allow(clippy::needless_pub_self, unused)]
use std::future::Future;
fn fut() -> impl Future<Output = i32> {
//~^ manual_async_fn
async { 42 }
}
#[rustfmt::skip]
fn fut2() ->impl Future<Output = i32> {
//~^ manual_async_fn
async { 42 }
}
#[rustfmt::skip]
fn fut3()-> impl Future<Output = i32> {
//~^ manual_async_fn
async { 42 }
}
fn empty_fut() -> impl Future<Output = ()> {
//~^ manual_async_fn
async {}
}
#[rustfmt::skip]
fn empty_fut2() ->impl Future<Output = ()> {
//~^ manual_async_fn
async {}
}
#[rustfmt::skip]
fn empty_fut3()-> impl Future<Output = ()> {
//~^ manual_async_fn
async {}
}
fn core_fut() -> impl core::future::Future<Output = i32> {
//~^ manual_async_fn
async move { 42 }
}
// should be ignored
fn has_other_stmts() -> impl core::future::Future<Output = i32> {
let _ = 42;
async move { 42 }
}
// should be ignored
fn not_fut() -> i32 {
42
}
// should be ignored
async fn already_async() -> impl Future<Output = i32> {
async { 42 }
}
struct S;
impl S {
fn inh_fut() -> impl Future<Output = i32> {
//~^ manual_async_fn
async {
// NOTE: this code is here just to check that the indentation is correct in the suggested fix
let a = 42;
let b = 21;
if a < b {
let c = 21;
let d = 42;
if c < d {
let _ = 42;
}
}
42
}
}
// should be ignored
fn not_fut(&self) -> i32 {
42
}
// should be ignored
fn has_other_stmts() -> impl core::future::Future<Output = i32> {
let _ = 42;
async move { 42 }
}
// should be ignored
async fn already_async(&self) -> impl Future<Output = i32> {
async { 42 }
}
}
// Tests related to lifetime capture
fn elided(_: &i32) -> impl Future<Output = i32> + '_ {
//~^ manual_async_fn
async { 42 }
}
// should be ignored
fn elided_not_bound(_: &i32) -> impl Future<Output = i32> + use<> {
async { 42 }
}
#[allow(clippy::needless_lifetimes)]
fn explicit<'a, 'b>(_: &'a i32, _: &'b i32) -> impl Future<Output = i32> + 'a + 'b {
//~^ manual_async_fn
async { 42 }
}
// should be ignored
#[allow(clippy::needless_lifetimes)]
fn explicit_not_bound<'a, 'b>(_: &'a i32, _: &'b i32) -> impl Future<Output = i32> + use<> {
async { 42 }
}
// should be ignored
mod issue_5765 {
use std::future::Future;
struct A;
impl A {
fn f(&self) -> impl Future<Output = ()> + use<> {
async {}
}
}
fn test() {
let _future = {
let a = A;
a.f()
};
}
}
pub fn issue_10450() -> impl Future<Output = i32> {
//~^ manual_async_fn
async { 42 }
}
pub(crate) fn issue_10450_2() -> impl Future<Output = i32> {
//~^ manual_async_fn
async { 42 }
}
pub(self) fn issue_10450_3() -> impl Future<Output = i32> {
//~^ manual_async_fn
async { 42 }
}
macro_rules! issue_12407 {
(
$(
$(#[$m:meta])*
$v:vis $(override($($overrides:tt),* $(,)?))? fn $name:ident $([$($params:tt)*])? (
$($arg_name:ident: $arg_typ:ty),* $(,)?
) $(-> $ret_ty:ty)? = $e:expr;
)*
) => {
$(
$(#[$m])*
$v $($($overrides)*)? fn $name$(<$($params)*>)?(
$($arg_name: $arg_typ),*
) $(-> $ret_ty)? {
$e
}
)*
};
}
issue_12407! {
fn _hello() -> impl Future<Output = ()> = async {};
fn non_async() = println!("hello");
fn foo() = non_async();
}
fn main() {}
|
