clap/clap_derive/tests/ui/skip_subcommand.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

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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)]
#[clap(name = "make-cookie")]
struct MakeCookie {
#[clap(short)]
s: String,
#[clap(subcommand, skip)]
cmd: Command,
}
#[derive(Parser, Debug)]
enum Command {
#[clap(name = "pound")]
/// Pound acorns into flour for cookie dough.
Pound { acorns: u32 },
Sparkle {
#[clap(short)]
color: String,
},
}
impl Default for Command {
fn default() -> Self {
Command::Pound { acorns: 0 }
}
}
fn main() {
let opt = MakeCookie::parse();
println!("{:?}", opt);
}