Macro cfgenius::cond

macro_rules! cond {
    (
        $(if $pred:ident ($($pred_args:tt)*) {
            $($yes:tt)*
        }) else + $(else {
            $($no:tt)*
        })?
    ) => { ... };
}

A conditionally-compiled statement or item.

Syntax

cond! {
    if <if predicate> {
        // arbitrary tokens
    } else if <else-if predicate> {  // There can be zero or more of these.
        // arbitrary tokens
    } else {                         // This is optional.
        // arbitrary tokens
    }
}

See the predicates section of the crate documentation for more information about the predicate grammar.