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//@ check-pass
//@ edition:2018
//@ compile-flags: -Z span-debug
//@ proc-macro: test-macros.rs
// Tests that we properly pass tokens to proc-macro when nested
// nonterminals are involved.
#![no_std] // Don't load unnecessary hygiene information from std
extern crate std;
#[macro_use]
extern crate test_macros;
macro_rules! wrap {
(first, $e:expr) => { wrap!(second, $e + 1) };
(second, $e:expr) => { wrap!(third, $e + 2) };
(third, $e:expr) => {
print_bang!($e + 3)
};
}
fn main() {
let _ = wrap!(first, 0);
}
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