ts_error/
program_exit.rs

1use alloc::boxed::Box;
2use core::{error::Error, fmt};
3
4use crate::Report;
5
6/// Type alias for a program that reports it's exit.
7pub type ReportProgramExit = Result<(), ProgramReport>;
8
9/// A report for a program exit.
10pub struct ProgramReport(Box<dyn Error + 'static>);
11impl<E: Error + 'static> From<E> for ProgramReport {
12    fn from(value: E) -> Self {
13        Self(Box::new(value))
14    }
15}
16impl fmt::Debug for ProgramReport {
17    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
18        write!(f, "{self}")
19    }
20}
21impl fmt::Display for ProgramReport {
22    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
23        let report = Report::new(self.0.as_ref());
24
25        #[cfg(feature = "std")]
26        let current_exe = std::env::current_exe().ok();
27        #[cfg(feature = "std")]
28        let current_exe_file_name = current_exe.as_ref().and_then(|path| path.file_name());
29        #[cfg(feature = "std")]
30        let current_exe_name = current_exe_file_name
31            .as_ref()
32            .and_then(|name| name.to_str());
33        #[cfg(feature = "std")]
34        let exe = current_exe_name.unwrap_or("the program");
35        #[cfg(not(feature = "std"))]
36        let exe = "the program";
37
38        writeln!(f, "{exe} exited unsuccessfully")?;
39        write!(f, "{report}")
40    }
41}
ts_error/program_exit.rs

ts_error/
program_exit.rs
