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|
// compile-flags: --edition=2018
use core::{
future::Future,
marker::Send,
pin::Pin,
};
fn non_async_func() {
println!("non_async_func was covered");
let b = true;
if b {
println!("non_async_func println in block");
}
}
async fn async_func() {
println!("async_func was covered");
let b = true;
if b {
println!("async_func println in block");
}
}
async fn async_func_just_println() {
println!("async_func_just_println was covered");
}
fn main() {
println!("codecovsample::main");
non_async_func();
executor::block_on(async_func());
executor::block_on(async_func_just_println());
}
mod executor {
use core::{
future::Future,
pin::Pin,
task::{Context, Poll, RawWaker, RawWakerVTable, Waker},
};
pub fn block_on<F: Future>(mut future: F) -> F::Output {
let mut future = unsafe { Pin::new_unchecked(&mut future) };
use std::hint::unreachable_unchecked;
static VTABLE: RawWakerVTable = RawWakerVTable::new(
|_| unsafe { unreachable_unchecked() }, // clone
|_| unsafe { unreachable_unchecked() }, // wake
|_| unsafe { unreachable_unchecked() }, // wake_by_ref
|_| (),
);
let waker = unsafe { Waker::from_raw(RawWaker::new(core::ptr::null(), &VTABLE)) };
let mut context = Context::from_waker(&waker);
loop {
if let Poll::Ready(val) = future.as_mut().poll(&mut context) {
break val;
}
}
}
}
|
