1 use std::marker::PhantomData;
2 use std::panic::{RefUnwindSafe, UnwindSafe};
3 use std::rc::Rc;
4 
5 // Zero sized marker with the correct set of autotrait impls we want all proc
6 // macro types to have.
7 pub(crate) type Marker = PhantomData<ProcMacroAutoTraits>;
8 
9 pub(crate) use self::value::*;
10 
11 mod value {
12     pub(crate) use std::marker::PhantomData as Marker;
13 }
14 
15 pub(crate) struct ProcMacroAutoTraits(Rc<()>);
16 
17 impl UnwindSafe for ProcMacroAutoTraits {}
18 impl RefUnwindSafe for ProcMacroAutoTraits {}
19