#![cfg_attr(nightly, feature(never_type))] 
#![cfg_attr(nightly, feature(associated_type_defaults))] 

#![allow(dead_code)]

#[macro_use] extern crate log;
#[macro_use] extern crate lazy_static;
#[macro_use] extern crate lazy_format;
#[macro_use] extern crate cfg_if;
#[macro_use] extern crate ad_hoc_iter;

#[allow(unused_imports)]
use color_eyre::{
    eyre::{
	eyre,
	self,

	WrapErr as _,
    },
    SectionExt as _,
    Help as _,
};

mod ext;
use ext::*;

mod arg;

#[inline] fn init() -> Result<(), eyre::Report>
{
    color_eyre::install()?;
    pretty_env_logger::init();
    
    trace!("installed panic handler & logger");
    Ok(())
}

async fn real_main() -> Result<i32, eyre::Report>
{
    init().wrap_err(eyre!("Failed to initialise logger / panic handler"))?;

    arg::print_usage();
    
    Ok(0)
}

#[tokio::main]
async fn main() -> Result<(), eyre::Report> {
    Ok(match real_main().await? {
	0 => trace!("Exiting with normal code 0"),
	ex => {
	    warn!("Exiting with nonzero exit code: {}", ex);
	    std::process::exit(ex)
	},
    })
}