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  1. #include <iostream>
  2. #include <map>
  3. #include <typeinfo>
  4.  
  5. struct Access {
  6.  
  7.     static std::map<int, int> bits;
  8.  
  9.     enum class Group1 : short {
  10.         Right1  = 1 << 0,
  11.         Right2  = 1 << 1,
  12.         Key = 1
  13.     };
  14.  
  15.  
  16.     enum class Group2: short {
  17.         Right1  = 1 << 0,
  18.         Right2  = 1 << 1,
  19.         Key = 2
  20.     };
  21.  
  22.     template<typename T>
  23.     bool operator()(T bit)
  24.     {
  25.     	std::cout << "T: " << typeid(T).name() << std::endl;
  26.         return ((Access::bits.find(static_cast<int>(T::Key)) != Access::bits.end()) && (Access::bits[static_cast<int>(T::Key)] & bit) == bit);
  27.     }
  28.  
  29.     //bool operator()(Access::Group1 bit);
  30.     //bool operator()(Access::Group2 bit);
  31.  
  32.     Access operator=(std::map<int, int> rights)
  33.     {
  34.         Access::bits = rights;
  35.         return *this;
  36.     }
  37. } Access;
  38.  
  39. std::map<int, int> Access::bits;
  40.  
  41. // Bitvergleich Template
  42. template<typename T>
  43. T operator &(int lhs,  T rhs)
  44. {
  45.     return static_cast<T>(lhs & static_cast<int>(rhs));
  46. }
  47.  
  48. /*
  49. bool Access::operator()(Access::Group1 bit)
  50. {
  51.     return ((Access::bits.find(static_cast<int>(Access::Group1::Key)) != Access::bits.end()) && (Access::bits[static_cast<int>(Access::Group1::Key)] & bit) == bit);
  52. }
  53.  
  54. bool Access::operator()(Access::Group2 bit)
  55. {
  56.     return ((Access::bits.find(static_cast<int>(Access::Group2::Key)) != Access::bits.end()) && (Access::bits[static_cast<int>(Access::Group2::Key)] & bit) == bit);
  57. }
  58. */
  59.  
  60. int main(int argc, char *argv[]) {
  61.  
  62.     // Diese Daten kommen aus der JSON Datei/Anfrage
  63.     std::map<int, int> json = {
  64.         {1, 7}
  65.     };
  66.  
  67.     Access = json;
  68.  
  69.     if (Access(Access::Group1::Right1))
  70.     {
  71.         std::cout << "Access Group1::Right1 granted!" << std::endl;
  72.     }
  73.  
  74.     if (Access(Access::Group1::Right2))
  75.     {
  76.         std::cout << "Access Group1::Right2 granted!" << std::endl;
  77.     }
  78.  
  79.  
  80.     if (Access(Access::Group2::Right1))
  81.     {
  82.         std::cout << "Access Group2::Right1 granted!" << std::endl;
  83.     }
  84.  
  85.     return 0;
  86. }
Success #stdin #stdout 0s 15248KB
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stdin
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Standard input is empty
stdout
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T: N6Access6Group1E
Access Group1::Right1 granted!
T: N6Access6Group1E
Access Group1::Right2 granted!
T: N6Access6Group2E
https://ideone.com/clpWag
language:
C++ (gcc 8.3)
created:
8 years ago
visibility:
secret

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