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mpv_client_cross_macros/
lib.rs

1use proc_macro::TokenStream;
2use quote::quote;
3use syn::{ItemFn, parse_macro_input};
4
5#[proc_macro_attribute]
6pub fn main(_attr: TokenStream, item: TokenStream) -> TokenStream {
7    let input_fn = parse_macro_input!(item as ItemFn);
8    let fn_name = &input_fn.sig.ident;
9
10    let expanded = quote! {
11        #input_fn
12
13        #[unsafe(no_mangle)]
14        unsafe extern "C" fn mpv_open_cplugin(handle: *mut ::mpv_client::mpv_handle) -> i32 {
15            let (mp, event_token) = unsafe { ::mpv_client::Handle::from_ptr(handle) };
16            mp.initialize_logging().expect("logger is already set");
17            #fn_name(mp, event_token)
18        }
19    };
20
21    TokenStream::from(expanded)
22}