Macro dep_obj::context

macro_rules! context {
    (
        mod $name:ident
        $(< $( $lt:tt $( : $clt:tt $(+ $dlt:tt )* )? ),+ $(,)?>)?
        {
            $($(
                $field:ident $(/ $field_mut:ident)? : $field_mod:ident $field_ty:ty
            ),+ $(,)?)?
        }
    ) => { ... };
    (
        @impl $name:ident
        [$($g:tt)*] [$($r:tt)*]
        {$({$($f:tt)*})*}
        {$({$($p:tt)*})*}
        {$({$($a:tt)*})*}
        {$({$($b:tt)*})*}
        {$field:ident : ref $ty:ty $(, $($other_fields:tt)+)?}
    ) => { ... };
    (
        @impl $name:ident
        [$($g:tt)*] [$($r:tt)*]
        {$({$($f:tt)*})*}
        {$({$($p:tt)*})*}
        {$({$($a:tt)*})*}
        {$({$($b:tt)*})*}
        {$field:ident / $field_mut:ident : mut $ty:ty $(, $($other_fields:tt)+)?}
    ) => { ... };
    (
        @impl $name:ident
        [$($g:tt)*] [$($r:tt)*]
        {$({$($f:tt)*})*}
        {$({$($p:tt)*})*}
        {$({$($a:tt)*})*}
        {$({$($b:tt)*})*}
        {$field:ident : const $ty:ty $(, $($other_fields:tt)+)?}
    ) => { ... };
    (
        @impl $name:ident
        [$($g:tt)*] [$($r:tt)*]
        {$({$($f:tt)*})*} {$({$($p:tt)*})*} {$({$($a:tt)*})*} {$({$($b:tt)*})*} {}
    ) => { ... };
}