Macro ast_struct

macro_rules! ast_struct {
    (
        $(#[$attr:meta])*
        $pub:ident $struct:ident $name:ident #full $body:tt
    ) => { ... };
    (
        $(#[$attr:meta])*
        $pub:ident $struct:ident $name:ident $body:tt
    ) => { ... };
}