macro_rules! gate_alt { ($visitor:expr, $has_feature:expr, $name:expr, $span:expr, $explain:expr) => { ... }; }
Expand description
The unusual case, where the has_feature
condition is non-standard.
macro_rules! gate_alt { ($visitor:expr, $has_feature:expr, $name:expr, $span:expr, $explain:expr) => { ... }; }
The unusual case, where the has_feature
condition is non-standard.