#pragma once

#include <c10/util/Exception.h>
#include <c10/util/Registry.h>

// NB: Class must live in `at` due to limitations of Registry.h.
namespace at {

struct TORCH_API MAIAHooksInterface {
  // This should never actually be implemented, but it is used to
  // squelch -Werror=non-virtual-dtor
  virtual ~MAIAHooksInterface() = default;

  virtual std::string showConfig() const {
    TORCH_CHECK(false, "Cannot query detailed MAIA version information.");
  }
};

// NB: dummy argument to suppress "ISO C++11 requires at least one argument
// for the "..." in a variadic macro"
struct TORCH_API MAIAHooksArgs {};

TORCH_DECLARE_REGISTRY(MAIAHooksRegistry, MAIAHooksInterface, MAIAHooksArgs);
#define REGISTER_MAIA_HOOKS(clsname) \
  C10_REGISTER_CLASS(MAIAHooksRegistry, clsname, clsname)

namespace detail {
TORCH_API const MAIAHooksInterface& getMAIAHooks();
} // namespace detail

} // namespace at