vendor/rayon-core/src/private.rs

   1 //! The public parts of this private module are used to create traits
   2 //! that cannot be implemented outside of our own crate.  This way we
   3 //! can feel free to extend those traits without worrying about it
   4 //! being a breaking change for other implementations.
   5
   6 /// If this type is pub but not publicly reachable, third parties
   7 /// can't name it and can't implement traits using it.
   8 #[allow(missing_debug_implementations)]
   9 pub struct PrivateMarker;
  10
  11 macro_rules! private_decl {
  12     () => {
  13         /// This trait is private; this method exists to make it
  14         /// impossible to implement outside the crate.
  15         #[doc(hidden)]
  16         fn __rayon_private__(&self) -> crate::private::PrivateMarker;
  17     }
  18 }
  19
  20 macro_rules! private_impl {
  21     () => {
  22         fn __rayon_private__(&self) -> crate::private::PrivateMarker {
  23             crate::private::PrivateMarker
  24         }
  25     }
  26 }