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//@ force-host
//@ no-prefer-dynamic
#![crate_type = "proc-macro"]
extern crate proc_macro;
use proc_macro::{TokenStream, TokenTree, Group, Delimiter};
#[proc_macro_attribute]
pub fn first(_attr: TokenStream, item: TokenStream) -> TokenStream {
let tokens: TokenStream = "#[derive(Second)]".parse().unwrap();
let wrapped = TokenTree::Group(Group::new(Delimiter::None, item.into_iter().collect()));
tokens.into_iter().chain(std::iter::once(wrapped)).collect()
}
#[proc_macro_derive(Second)]
pub fn second(item: TokenStream) -> TokenStream {
TokenStream::new()
}
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