Macro __parse_animations 

macro_rules! __parse_animations {
    ($ops:ident, $t:expr => add($s:literal), $($rest:tt)*) => { ... };
    ($ops:ident, $t:expr => remove($s:literal), $($rest:tt)*) => { ... };
    ($ops:ident, $t:expr => ($($inner:tt)*), $($rest:tt)*) => { ... };
    ($ops:ident, $t:expr => add($s:literal)) => { ... };
    ($ops:ident, $t:expr => remove($s:literal)) => { ... };
    ($ops:ident, $t:expr => ($($inner:tt)*)) => { ... };
    ($ops:ident,) => { ... };
}