blob: b05429da6622500a9b35a606ed4967317419cb85 (
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// run-rustfix
#![warn(clippy::manual_async_fn)]
#![allow(unused)]
use std::future::Future;
fn fut() -> impl Future<Output = i32> {
async { 42 }
}
#[rustfmt::skip]
fn fut2() ->impl Future<Output = i32> {
async { 42 }
}
#[rustfmt::skip]
fn fut3()-> impl Future<Output = i32> {
async { 42 }
}
fn empty_fut() -> impl Future<Output = ()> {
async {}
}
#[rustfmt::skip]
fn empty_fut2() ->impl Future<Output = ()> {
async {}
}
#[rustfmt::skip]
fn empty_fut3()-> impl Future<Output = ()> {
async {}
}
fn core_fut() -> impl core::future::Future<Output = i32> {
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> {
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> + '_ {
async { 42 }
}
// should be ignored
fn elided_not_bound(_: &i32) -> impl Future<Output = i32> {
async { 42 }
}
fn explicit<'a, 'b>(_: &'a i32, _: &'b i32) -> impl Future<Output = i32> + 'a + 'b {
async { 42 }
}
// should be ignored
#[allow(clippy::needless_lifetimes)]
fn explicit_not_bound<'a, 'b>(_: &'a i32, _: &'b i32) -> impl Future<Output = i32> {
async { 42 }
}
// should be ignored
mod issue_5765 {
use std::future::Future;
struct A;
impl A {
fn f(&self) -> impl Future<Output = ()> {
async {}
}
}
fn test() {
let _future = {
let a = A;
a.f()
};
}
}
fn main() {}
|
