macro_rules! cfg_if {
($(
if #[cfg($meta:meta)] { $($tokens:tt)* }
) else * else {
$($tokens2:tt)*
}) => { ... };
(
if #[cfg($i_met:meta)] { $($i_tokens:tt)* }
$(
else if #[cfg($e_met:meta)] { $($e_tokens:tt)* }
)*
) => { ... };
(@__items ($($not:meta,)*) ; ) => { ... };
(@__items ($($not:meta,)*) ; ( ($($m:meta),*) ($($tokens:tt)*) ), $($rest:tt)*) => { ... };
(@__identity $($tokens:tt)*) => { ... };
}
Expand description
The main macro provided by this crate. See crate documentation for more information.