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// This file is part of Locus <https://github.com/gemrest/locus>.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 3.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
// Copyright (C) 2022-2023 Fuwn <[email protected]>
// SPDX-License-Identifier: GPL-3.0-only
#![deny(
warnings,
nonstandard_style,
unused,
future_incompatible,
rust_2018_idioms,
unsafe_code
)]
#![deny(clippy::all, clippy::nursery, clippy::pedantic)]
#![recursion_limit = "128"]
#![feature(proc_macro_span)]
use proc_macro::TokenStream;
use quote::quote;
/// Legitimise and mount Locus modules
///
/// # Panics
///
/// This *should* never panic, but if it does, we don't care.
#[proc_macro]
pub fn modules(input: TokenStream) -> TokenStream {
let mut tokens = input.into_iter();
let mut span = if let Some(span) = tokens.next() {
span.span()
} else {
return quote::quote!().into();
};
for token in tokens {
span = span.join(token.span()).unwrap();
}
let mut legitimised_modules = quote!();
let mut modules = quote!();
span.source_text().unwrap().lines().for_each(|line| {
if line.contains("search") {
legitimised_modules.extend(quote!(
pub mod search;
));
modules.extend(quote!(router.attach_stateless(search::module);));
} else {
let module_name =
quote::format_ident!("{}", line.trim_end_matches(',').trim_start());
legitimised_modules.extend(quote!(mod #module_name;));
modules.extend(quote!(router.attach_stateless(#module_name::module);));
}
});
quote! {
#legitimised_modules
pub fn module(router: &mut ::windmark::Router) {
#modules
}
}
.into()
}
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