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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
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 *
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#ifndef SHARE_GC_Z_ZPAGEAGE_INLINE_HPP
#define SHARE_GC_Z_ZPAGEAGE_INLINE_HPP

#include "gc/z/zPageAge.hpp"

#include "cppstdlib/type_traits.hpp"
#include "utilities/checkedCast.hpp"

inline uint untype(ZPageAge age) {
  return static_cast<uint>(age);
}

inline ZPageAge to_zpageage(uint age) {
  assert(age < ZPageAgeCount, "Invalid age");
  return static_cast<ZPageAge>(age);
}

inline ZPageAge operator+(ZPageAge age, size_t size) {
  const auto size_value = checked_cast<std::underlying_type_t<ZPageAge>>(size);
  return to_zpageage(untype(age) + size_value);
}

inline ZPageAge operator-(ZPageAge age, size_t size) {
  const auto size_value = checked_cast<std::underlying_type_t<ZPageAge>>(size);
  return to_zpageage(untype(age) - size_value);
}

#endif // SHARE_GC_Z_ZPAGEAGE_INLINE_HPP