// This file is part of Gear.

// Copyright (C) 2021-2023 Gear Technologies Inc.
// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0

// 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, either version 3 of the License, or
// (at your option) any later version.

// 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 <https://www.gnu.org/licenses/>.

#![no_std]

#[macro_use]
extern crate quote;
extern crate proc_macro;
extern crate syn;

use proc_macro::TokenStream;
use syn::DeriveInput;

/// Derive macro for default implementation of RuntimeReason.
#[proc_macro_derive(RuntimeReason)]
pub fn derive_runtime_reason(input: TokenStream) -> TokenStream {
    let ast: DeriveInput = syn::parse(input).unwrap();
    let name = &ast.ident;

    quote! { impl RuntimeReason for #name {} }.into()
}

/// Derive macro for default implementation of SystemReason.
#[proc_macro_derive(SystemReason)]
pub fn derive_system_reason(input: TokenStream) -> TokenStream {
    let ast: DeriveInput = syn::parse(input).unwrap();
    let name = &ast.ident;

    quote! { impl SystemReason for #name {} }.into()
}
