rust/tests/ui/proc-macro/auxiliary/nonterminal-recollect-attr.rs

26 lines
684 B
Rust

//@ force-host
//@ no-prefer-dynamic
#![crate_type = "proc-macro"]
#![feature(proc_macro_quote)]
extern crate proc_macro;
use proc_macro::{TokenStream, quote};
#[proc_macro_attribute]
pub fn first_attr(_: TokenStream, input: TokenStream) -> TokenStream {
let recollected: TokenStream = input.into_iter().collect();
println!("First recollected: {:#?}", recollected);
quote! {
#[second_attr]
$recollected
}
}
#[proc_macro_attribute]
pub fn second_attr(_: TokenStream, input: TokenStream) -> TokenStream {
let recollected: TokenStream = input.into_iter().collect();
println!("Second recollected: {:#?}", recollected);
TokenStream::new()
}