mirror of
https://github.com/clap-rs/clap
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d840d5650e
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
42 lines
942 B
Rust
42 lines
942 B
Rust
// Copyright 2018 Guillaume Pinot (@TeXitoi) <texitoi@texitoi.eu>
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use clap::Parser;
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#[derive(Parser, Debug)]
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#[clap(name = "make-cookie")]
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struct MakeCookie {
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#[clap(short)]
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s: String,
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#[clap(subcommand, skip)]
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cmd: Command,
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}
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#[derive(Parser, Debug)]
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enum Command {
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#[clap(name = "pound")]
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/// Pound acorns into flour for cookie dough.
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Pound { acorns: u32 },
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Sparkle {
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#[clap(short)]
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color: String,
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},
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}
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impl Default for Command {
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fn default() -> Self {
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Command::Pound { acorns: 0 }
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}
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}
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fn main() {
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let opt = MakeCookie::parse();
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println!("{:?}", opt);
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}
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