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//@ check-pass
//@ proc-macro: issue-79242.rs
// Regression test for issue #79242
// Tests that compilation time doesn't blow up for a proc-macro
// invocation with deeply nested nonterminals
#![allow(unused)]
extern crate issue_79242;
macro_rules! declare_nats {
($prev:ty) => {};
($prev:ty, $n:literal$(, $tail:literal)*) => {
issue_79242::dummy! {
$prev
}
declare_nats!(Option<$prev>$(, $tail)*);
};
(0, $($n:literal),+) => {
pub struct N0;
declare_nats!(N0, $($n),+);
};
}
declare_nats! {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28
}
fn main() {}
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