1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
|
//@ force-host
//@ no-prefer-dynamic
#![crate_type = "proc-macro"]
#![feature(proc_macro_quote)]
extern crate proc_macro;
use proc_macro::{TokenStream, quote};
// This macro is not very interesting, but it does contain delimited tokens with
// no content - `()` and `{}` - which has caused problems in the past.
// Also, it tests that we can escape `$` via `$$`.
#[proc_macro]
pub fn hello(_: TokenStream) -> TokenStream {
quote!({
fn hello() {}
macro_rules! m { ($$($$t:tt)*) => { $$($$t)* } }
m!(hello());
})
}
|
