OwnershipState.h

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#pragma once
 
#include <bitset>
#include <iostream>
#include <string>
 
namespace autopas {
enum class OwnershipState : int64_t {
  dummy = 0b0000,  // 0
  owned = 0b0001,  // 1
  halo = 0b0010,  // 2
};
 
constexpr OwnershipState operator&(const OwnershipState a, const OwnershipState b) {
  return static_cast<OwnershipState>(static_cast<int64_t>(a) & static_cast<int64_t>(b));
}
 
constexpr OwnershipState operator|(const OwnershipState a, const OwnershipState b) {
  return static_cast<OwnershipState>(static_cast<int64_t>(a) | static_cast<int64_t>(b));
}
 
constexpr int64_t toInt64(const OwnershipState a) { return static_cast<int64_t>(a); }
 
inline std::string format_as(const OwnershipState &state) {
  switch (state) {
    case OwnershipState::dummy:
      return "dummy";
    case OwnershipState::owned:
      return "owned";
    case OwnershipState::halo:
      return "halo";
    default:
      return "unknown state: 0b" + std::bitset<4>(static_cast<int64_t>(state)).to_string();
  }
}
 
inline std::ostream &operator<<(std::ostream &os, const OwnershipState &ownershipState) {
  // Reuse format_as to prevent duplicated logic
  return os << format_as(ownershipState);
}
}  // namespace autopas