abscissa_core 0.2.0

Application microframework with support for command-line option parsing, configuration, error handling, logging, and terminal interactions. This crate contains the framework's core functionality.
Documentation 
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//! Default exit handlers for Abscissa applications

use failure::Error;
use std::process;

use super::{Application, Component};

/// Print a fatal error message and exit
pub fn fatal_error<A>(app: &A, err: &Error) -> !
where
    A: Application,
{
    status_err!("{} fatal error: {}", app.name(), err);
    process::exit(1)
}

/// Exit because component startup ordering could not be determined.
/// This is a barebones implementation using basic std facilities
/// because it might be called before the terminal component has been
/// started, and we can't use it to log errors about itself.
pub(crate) fn bad_component_order<A>(a: &dyn Component<A>, b: &dyn Component<A>) -> !
where
    A: Application,
{
    eprintln!("*** error(abscissa): couldn't determine startup order for components:");
    eprintln!(" - {:?}", a);
    eprintln!(" - {:?}", b);
    process::exit(1)
}