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gear_common_codegen/
lib.rs

1// Copyright (C) Gear Technologies Inc.
2// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0
3
4#![no_std]
5
6#[macro_use]
7extern crate quote;
8extern crate proc_macro;
9extern crate syn;
10
11use proc_macro::TokenStream;
12use syn::DeriveInput;
13
14/// Derive macro for default implementation of RuntimeReason.
15#[proc_macro_derive(RuntimeReason)]
16pub fn derive_runtime_reason(input: TokenStream) -> TokenStream {
17    let ast: DeriveInput = syn::parse(input).unwrap();
18    let name = &ast.ident;
19
20    quote! { impl RuntimeReason for #name {} }.into()
21}
22
23/// Derive macro for default implementation of SystemReason.
24#[proc_macro_derive(SystemReason)]
25pub fn derive_system_reason(input: TokenStream) -> TokenStream {
26    let ast: DeriveInput = syn::parse(input).unwrap();
27    let name = &ast.ident;
28
29    quote! { impl SystemReason for #name {} }.into()
30}