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use bpaf::*;
#[derive(Debug, Copy, Clone)]
pub enum LevelFilter {
Off,
Error,
Warn,
Info,
Debug,
Trace,
}
#[derive(Bpaf)]
#[bpaf(options)]
#[allow(dead_code)]
#[derive(Debug, Clone)]
struct Options {
#[bpaf(external)]
verbose: LevelFilter,
#[bpaf(fallback(3))]
potato: usize,
}
fn verbose() -> impl Parser<LevelFilter> {
short('v')
.help("Verbosity level, use multiple times for more verbosity")
.req_flag(())
.many()
.map(|v| {
use LevelFilter::*;
*[Off, Error, Warn, Info, Debug, Trace]
.get(v.len())
.unwrap_or(&Trace)
})
}
fn main() {
println!("{:#?}", options().run());
}