Add using declarations for PrimitiveWrapper template parameters.

Prevents calls to internal::ConfigurationImpl::RegisterPrimitiveWrapper from requiring the specification of these parameters.

See similar practice [1] with example usage [2].

[1] https://github.com/tink-crypto/tink-cc/blob/d0fc7fe57b030330a4c2f20a23f414f8a031e57b/tink/core/key_type_manager.h#L106
[2] https://github.com/tink-crypto/tink-cc/blob/d0fc7fe57b030330a4c2f20a23f414f8a031e57b/tink/internal/configuration_impl.h#L43

PiperOrigin-RevId: 534923026

1 files changed, 6 insertions, 1 deletions

diff --git a/cc/primitive_wrapper.h b/cc/primitive_wrapper.h
index 73d2d2841..1ba6f223b 100644
--- a/cc/primitive_wrapper.h
+++ b/cc/primitive_wrapper.h
@@ -31,10 +31,15 @@ namespace tink {
 //
 // PrimitiveWrappers need to be written for every new primitive. They can be
 // registered in the registry to be fully integrated in Tink.
-template <typename InputPrimitive, typename Primitive>
+template <typename InputPrimitiveParam, typename PrimitiveParam>
 class PrimitiveWrapper {
  public:
   virtual ~PrimitiveWrapper() = default;
+
+  // Useful when writing templated code.
+  using InputPrimitive = InputPrimitiveParam;
+  using Primitive = PrimitiveParam;
+
   virtual crypto::tink::util::StatusOr<std::unique_ptr<Primitive>> Wrap(
       std::unique_ptr<PrimitiveSet<InputPrimitive>> primitive_set) const = 0;
 };