rustpatcher_macros/
lib.rs

1use proc_macro::TokenStream;
2use quote::quote;
3use syn::{parse_macro_input, ItemFn};
4
5#[proc_macro_attribute]
6pub fn main(_args: TokenStream, input: TokenStream) -> TokenStream {
7    let input_fn = parse_macro_input!(input as ItemFn);
8    let expanded = quote! {
9        // Create a static initializer that runs before main
10        #[ctor::ctor]
11        fn __init_version() {
12            rustpatcher::version_embed::__set_version(env!("CARGO_PKG_VERSION"));
13        }
14
15        #input_fn
16    };
17
18    TokenStream::from(expanded)
19}