Macro struct_update::Struct

macro_rules! Struct {
    (@() -> {$S:ident $($f:ident : $v:expr,)*}) => { ... };
    (@($f:ident : $v:expr, $($t:tt)*) -> {$($r:tt)*}) => { ... };
    (@([$($f:ident),*$(,)?] : ..$other:expr, $($t:tt)*) -> {$($r:tt)*}) => { ... };
    ($S:ident , $($f:ident : $v:expr,)* $([$($f2:ident),*$(,)?] : ..$other:expr,)*) => { ... };
    ($S:ident, $($t:tt)*) => { ... };
    ($P:path as $S:ident, $($t:tt)*) => { ... };
    ($P:path, $($t:tt)*) => { ... };
}