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#![feature(coverage_attribute)]
//@ edition: 2018
//@ aux-build: executor.rs
extern crate executor;
macro_rules! bail {
($msg:literal $(,)?) => {
if $msg.len() > 0 {
println!("no msg");
} else {
println!($msg);
}
return Err(String::from($msg));
};
}
macro_rules! on_error {
($value:expr, $error_message:expr) => {
$value.or_else(|e| {
// This closure, which is declared in a macro, should be instrumented.
let message = format!($error_message, e);
if message.len() > 0 {
println!("{}", message);
Ok(String::from("ok"))
} else {
bail!("error");
}
})
};
}
fn load_configuration_files() -> Result<String, String> {
Ok(String::from("config"))
}
pub async fn test() -> Result<(), String> {
println!("Starting service");
let config = on_error!(load_configuration_files(), "Error loading configs: {}")?;
let startup_delay_duration = String::from("arg");
let _ = (config, startup_delay_duration);
Ok(())
}
#[coverage(off)]
fn main() {
executor::block_on(test()).unwrap();
}
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