Macro rmatch 

macro_rules! rmatch {
    ([$min:literal $max:literal] $val:tt
        $( 
            $p:pat => { $e:expr }
        )*
    ) => { ... };
}

Ranged pattern matching macro: no bounds recalculation, extended patterns

Allows to match a Ranged value over a range it covers. The feature has the following limitations:

• The bounds must be explicitly specified; they are checked, but not inferred
• The macro syntax supports a subset of Rust pattern matching syntax
• i128::MIN and i128::MAX values must not be in range
• The unclear error reporting

fn ranged_to_bool(r: Ranged<0,1>) -> bool {
    rmatch!{[0 1] r  // Bounds and expression (token tree, 
                     // complex expressions must be in parentheses)
        0 => {false}
        1 => {true}  // Complex patterns like 1..5 | 12..14 are supported
    }
}