gear_common_codegen/lib.rs
1// This file is part of Gear.
2
3// Copyright (C) 2021-2025 Gear Technologies Inc.
4// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0
5
6// This program is free software: you can redistribute it and/or modify
7// it under the terms of the GNU General Public License as published by
8// the Free Software Foundation, either version 3 of the License, or
9// (at your option) any later version.
10
11// This program is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14// GNU General Public License for more details.
15
16// You should have received a copy of the GNU General Public License
17// along with this program. If not, see <https://www.gnu.org/licenses/>.
18
19#![no_std]
20
21#[macro_use]
22extern crate quote;
23extern crate proc_macro;
24extern crate syn;
25
26use proc_macro::TokenStream;
27use syn::DeriveInput;
28
29/// Derive macro for default implementation of RuntimeReason.
30#[proc_macro_derive(RuntimeReason)]
31pub fn derive_runtime_reason(input: TokenStream) -> TokenStream {
32 let ast: DeriveInput = syn::parse(input).unwrap();
33 let name = &ast.ident;
34
35 quote! { impl RuntimeReason for #name {} }.into()
36}
37
38/// Derive macro for default implementation of SystemReason.
39#[proc_macro_derive(SystemReason)]
40pub fn derive_system_reason(input: TokenStream) -> TokenStream {
41 let ast: DeriveInput = syn::parse(input).unwrap();
42 let name = &ast.ident;
43
44 quote! { impl SystemReason for #name {} }.into()
45}