144 lines
2.7 KiB
Rust
144 lines
2.7 KiB
Rust
#![warn(clippy::manual_async_fn)]
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#![allow(clippy::needless_pub_self, unused)]
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//@no-rustfix: need to change the suggestion to a multipart suggestion
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use std::future::Future;
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fn fut() -> impl Future<Output = i32> {
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async { 42 }
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}
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#[rustfmt::skip]
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fn fut2() ->impl Future<Output = i32> {
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async { 42 }
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}
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#[rustfmt::skip]
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fn fut3()-> impl Future<Output = i32> {
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async { 42 }
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}
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fn empty_fut() -> impl Future<Output = ()> {
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async {}
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}
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#[rustfmt::skip]
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fn empty_fut2() ->impl Future<Output = ()> {
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async {}
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}
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#[rustfmt::skip]
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fn empty_fut3()-> impl Future<Output = ()> {
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async {}
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}
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fn core_fut() -> impl core::future::Future<Output = i32> {
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async move { 42 }
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}
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// should be ignored
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fn has_other_stmts() -> impl core::future::Future<Output = i32> {
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let _ = 42;
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async move { 42 }
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}
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// should be ignored
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fn not_fut() -> i32 {
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42
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}
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// should be ignored
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async fn already_async() -> impl Future<Output = i32> {
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async { 42 }
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}
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struct S;
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impl S {
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fn inh_fut() -> impl Future<Output = i32> {
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async {
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// NOTE: this code is here just to check that the indentation is correct in the suggested fix
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let a = 42;
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let b = 21;
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if a < b {
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let c = 21;
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let d = 42;
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if c < d {
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let _ = 42;
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}
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}
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42
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}
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}
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// should be ignored
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fn not_fut(&self) -> i32 {
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42
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}
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// should be ignored
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fn has_other_stmts() -> impl core::future::Future<Output = i32> {
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let _ = 42;
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async move { 42 }
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}
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// should be ignored
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async fn already_async(&self) -> impl Future<Output = i32> {
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async { 42 }
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}
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}
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// Tests related to lifetime capture
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fn elided(_: &i32) -> impl Future<Output = i32> + '_ {
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async { 42 }
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}
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// should be ignored
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fn elided_not_bound(_: &i32) -> impl Future<Output = i32> {
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async { 42 }
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}
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fn explicit<'a, 'b>(_: &'a i32, _: &'b i32) -> impl Future<Output = i32> + 'a + 'b {
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async { 42 }
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}
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// should be ignored
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#[allow(clippy::needless_lifetimes)]
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fn explicit_not_bound<'a, 'b>(_: &'a i32, _: &'b i32) -> impl Future<Output = i32> {
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async { 42 }
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}
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// should be ignored
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mod issue_5765 {
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use std::future::Future;
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struct A;
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impl A {
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fn f(&self) -> impl Future<Output = ()> {
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async {}
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}
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}
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fn test() {
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let _future = {
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let a = A;
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a.f()
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};
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}
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}
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pub fn issue_10450() -> impl Future<Output = i32> {
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async { 42 }
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}
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pub(crate) fn issue_10450_2() -> impl Future<Output = i32> {
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async { 42 }
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}
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pub(self) fn issue_10450_3() -> impl Future<Output = i32> {
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async { 42 }
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}
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fn main() {}
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