#arguments-parser #clap-parser #entry-point #macro #proc-macro #args #cli-parser

macro clap_main

A crate to provide a #[clap_main] macro to automatically parse and pass args to your main function

14 releases

0.2.9 Feb 15, 2024
0.2.8 Feb 15, 2024
0.1.3 Dec 27, 2023
0.1.2 Oct 19, 2023

#385 in Procedural macros

GPL-3.0-only

5KB

Clap Main

This crate provides an procmacro #[clap_main] to decorate your entry point function and automatically parse a struct that implements clap::Parser from the cli args.

Example Usage

Requires clap with the derive feature enabled


#[derive(clap::Parser)]
struct CliArgs {
  /// A name to be greeted
  name: String
}

#[clap_main::clap_main]
fn main(CliArgs { name }: CliArgs) {
  println!("Hello {name}");  
}

Dependencies

~255–710KB
~17K SLoC