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|
LL| |// compile-flags: --edition=2018
LL| |#![feature(no_coverage)]
LL| |
LL| |macro_rules! bail {
LL| | ($msg:literal $(,)?) => {
LL| | if $msg.len() > 0 {
LL| | println!("no msg");
LL| | } else {
LL| | println!($msg);
LL| | }
LL| | return Err(String::from($msg));
LL| | };
LL| |}
LL| |
LL| |macro_rules! on_error {
LL| | ($value:expr, $error_message:expr) => {
LL| | $value.or_else(|e| { // FIXME(85000): no coverage in closure macros
LL| | let message = format!($error_message, e);
LL| | if message.len() > 0 {
LL| | println!("{}", message);
LL| | Ok(String::from("ok"))
LL| | } else {
LL| | bail!("error");
LL| | }
LL| | })
LL| | };
LL| |}
LL| |
LL| 1|fn load_configuration_files() -> Result<String, String> {
LL| 1| Ok(String::from("config"))
LL| 1|}
LL| |
LL| 1|pub async fn test() -> Result<(), String> {
LL| 1| println!("Starting service");
LL| 1| let config = on_error!(load_configuration_files(), "Error loading configs: {}")?;
^0
LL| |
LL| 1| let startup_delay_duration = String::from("arg");
LL| 1| let _ = (config, startup_delay_duration);
LL| 1| Ok(())
LL| 1|}
LL| |
LL| |#[no_coverage]
LL| |fn main() {
LL| | executor::block_on(test());
LL| |}
LL| |
LL| |mod executor {
LL| | use core::{
LL| | future::Future,
LL| | pin::Pin,
LL| | task::{Context, Poll, RawWaker, RawWakerVTable, Waker},
LL| | };
LL| |
LL| | #[no_coverage]
LL| | pub fn block_on<F: Future>(mut future: F) -> F::Output {
LL| | let mut future = unsafe { Pin::new_unchecked(&mut future) };
LL| | use std::hint::unreachable_unchecked;
LL| | static VTABLE: RawWakerVTable = RawWakerVTable::new(
LL| |
LL| | #[no_coverage]
LL| | |_| unsafe { unreachable_unchecked() }, // clone
LL| |
LL| | #[no_coverage]
LL| | |_| unsafe { unreachable_unchecked() }, // wake
LL| |
LL| | #[no_coverage]
LL| | |_| unsafe { unreachable_unchecked() }, // wake_by_ref
LL| |
LL| | #[no_coverage]
LL| | |_| (),
LL| | );
LL| | let waker = unsafe { Waker::from_raw(RawWaker::new(core::ptr::null(), &VTABLE)) };
LL| | let mut context = Context::from_waker(&waker);
LL| |
LL| | loop {
LL| | if let Poll::Ready(val) = future.as_mut().poll(&mut context) {
LL| | break val;
LL| | }
LL| | }
LL| | }
LL| |}
|
