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1| |// compile-flags: --edition=2018
2| |#![feature(no_coverage)]
3| |
4| |macro_rules! bail {
5| | ($msg:literal $(,)?) => {
6| | if $msg.len() > 0 {
7| | println!("no msg");
8| | } else {
9| | println!($msg);
10| | }
11| | return Err(String::from($msg));
12| | };
13| |}
14| |
15| |macro_rules! on_error {
16| | ($value:expr, $error_message:expr) => {
17| | $value.or_else(|e| { // FIXME(85000): no coverage in closure macros
18| | let message = format!($error_message, e);
19| | if message.len() > 0 {
20| | println!("{}", message);
21| | Ok(String::from("ok"))
22| | } else {
23| | bail!("error");
24| | }
25| | })
26| | };
27| |}
28| |
29| 1|fn load_configuration_files() -> Result<String, String> {
30| 1| Ok(String::from("config"))
31| 1|}
32| |
33| 1|pub fn main() -> Result<(), String> {
34| 1| println!("Starting service");
35| 1| let config = on_error!(load_configuration_files(), "Error loading configs: {}")?;
^0
36| |
37| 1| let startup_delay_duration = String::from("arg");
38| 1| let _ = (config, startup_delay_duration);
39| 1| Ok(())
40| 1|}
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