clap/clap_derive/tests/ui/flatten_and_parse.rs
Ed Page d840d5650e fix(derive)!: Rename Clap to Parser.
Before #2005, `Clap` was a special trait that derived all clap traits it
detected were relevant (including an enum getting both `ArgEnum`,
`Clap`, and `Subcommand`).  Now, we have elevated `Clap`, `Args`,
`Subcommand`, and `ArgEnum` to be user facing but the name `Clap` isn't
very descriptive.

This also helps further clarify the relationships so a crate providing
an item to be `#[clap(flatten)]` or `#[clap(subcommand)]` is more likely
to choose the needed trait to derive.

Also, my proposed fix fo #2785 includes making `App` attributes almost
exclusively for `Clap`.  Clarifying the names/roles will help
communicate this.

For prior discussion, see #2583
2021-10-09 20:12:03 -05:00

29 lines
714 B
Rust

// Copyright 2018 Guillaume Pinot (@TeXitoi) <texitoi@texitoi.eu>
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use clap::Parser;
#[derive(Parser, Debug)]
struct DaemonOpts {
#[clap(short)]
user: String,
#[clap(short)]
group: String,
}
#[derive(Parser, Debug)]
#[clap(name = "basic")]
struct Opt {
#[clap(flatten, parse(from_occurrences))]
opts: DaemonOpts,
}
fn main() {
let opt = Opt::parse();
println!("{:?}", opt);
}