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  1. #include <iostream>
  2.  
  3. #define ENUM_CLASS(NAME, TYPE, VALUES...) \
  4. struct NAME { \
  5.     enum e { VALUES }; \
  6.     explicit NAME(TYPE v) : val(v) {} \
  7.     NAME(e v) : val(v) {} \
  8.     operator e() const { return e(val); } \
  9.     private:\
  10.         TYPE val; \
  11. }
  12.  
  13. struct Enum;
  14.  
  15. void f(Enum e);
  16.  
  17. ENUM_CLASS(Enum, int, 
  18.     VALUE,
  19.     ANOTHER_VALUE
  20. );
  21.  
  22. void f (Enum e)
  23. {
  24.     switch(e)
  25.     {
  26.         case Enum::VALUE:
  27.             std::cout << "VALUE" << std::endl;
  28.             return;
  29.         case Enum::ANOTHER_VALUE:
  30.             std::cout << "ANOTHER_VALUE" << std::endl;
  31.             return;
  32.     }
  33.  
  34.     Enum e2 = (Enum)(e | Enum::VALUE);
  35. }
  36.  
  37. int main()
  38. {
  39.     f(Enum::ANOTHER_VALUE);
  40.     return 0;
  41. }
Success #stdin #stdout 0.01s 2680KB
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Standard input is empty
stdout
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ANOTHER_VALUE
https://ideone.com/TYtP2
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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