mirror of
https://github.com/clap-rs/clap
synced 2024-12-13 22:32:33 +00:00
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
53 lines
1.5 KiB
Rust
53 lines
1.5 KiB
Rust
// Copyright 2018 Guillaume Pinot (@TeXitoi) <texitoi@texitoi.eu>,
|
|
// Kevin Knapp (@kbknapp) <kbknapp@gmail.com>, and
|
|
// Andrew Hobden (@hoverbear) <andrew@hoverbear.org>
|
|
//
|
|
// 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.
|
|
//
|
|
// This work was derived from Structopt (https://github.com/TeXitoi/structopt)
|
|
// commit#ea76fa1b1b273e65e3b0b1046643715b49bec51f which is licensed under the
|
|
// MIT/Apache 2.0 license.
|
|
|
|
use clap::Parser;
|
|
|
|
// Tests that clap_derive properly detects an `Option` field
|
|
// that results from a macro expansion
|
|
#[test]
|
|
fn use_option() {
|
|
macro_rules! expand_ty {
|
|
($name:ident: $ty:ty) => {
|
|
#[derive(Parser)]
|
|
struct Outer {
|
|
#[clap(short, long)]
|
|
#[allow(dead_code)]
|
|
$name: $ty,
|
|
}
|
|
};
|
|
}
|
|
|
|
expand_ty!(my_field: Option<String>);
|
|
}
|
|
|
|
#[test]
|
|
fn issue_447() {
|
|
macro_rules! Command {
|
|
( $name:ident, [
|
|
#[$meta:meta] $var:ident($inner:ty)
|
|
] ) => {
|
|
#[derive(Debug, PartialEq, clap::Parser)]
|
|
enum $name {
|
|
#[$meta]
|
|
$var($inner),
|
|
}
|
|
};
|
|
}
|
|
|
|
Command! {GitCmd, [
|
|
#[clap(external_subcommand)]
|
|
Ext(Vec<String>)
|
|
]}
|
|
}
|