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// 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. //! This crate is custom derive for clap. It should not be used //! directly. See [clap documentation](https://docs.rs/clap) //! for the usage of `#[derive(Clap)]`. extern crate proc_macro; use proc_macro_error::proc_macro_error; mod derives; // /// It is required to have this seperate and specificly defined. // #[proc_macro_derive(ArgEnum, attributes(case_sensitive))] // pub fn arg_enum(input: proc_macro::TokenStream) -> proc_macro::TokenStream { // let input: syn::DeriveInput = syn::parse(input).unwrap(); // derives::derive_arg_enum(&input).into() // } /// Generates the `Clap` impl. #[proc_macro_derive(Clap, attributes(clap))] #[proc_macro_error] pub fn clap(input: proc_macro::TokenStream) -> proc_macro::TokenStream { let input: syn::DeriveInput = syn::parse_macro_input!(input); derives::derive_clap(&input).into() }