Flag Enums

Contains macros for defining flag enums. More...

Macros
#define	NNL_FLAG_ENUM
	An attribute for defining flag enums.
#define	NNL_DEFINE_ENUM_OPERATORS(ENUMTYPE)
	Macro to define bitwise operators for enum types.

Detailed Description

Contains macros for defining flag enums.

Macro Definition Documentation

NNL_DEFINE_ENUM_OPERATORS

#define NNL_DEFINE_ENUM_OPERATORS

(

ENUMTYPE

)

Value:

  inline ENUMTYPE operator|(ENUMTYPE a, ENUMTYPE b) {                                \
    return static_cast<ENUMTYPE>(static_cast<std::underlying_type_t<ENUMTYPE>>(a) |  \
                                 static_cast<std::underlying_type_t<ENUMTYPE>>(b));  \
  }                                                                                  \
  inline ENUMTYPE& operator|=(ENUMTYPE& a, ENUMTYPE b) { return a = a | b; }         \
  inline ENUMTYPE operator&(ENUMTYPE a, ENUMTYPE b) {                                \
    return static_cast<ENUMTYPE>(static_cast<std::underlying_type_t<ENUMTYPE>>(a) &  \
                                 static_cast<std::underlying_type_t<ENUMTYPE>>(b));  \
  }                                                                                  \
  inline ENUMTYPE operator&=(ENUMTYPE& a, ENUMTYPE b) { return a = a & b; }          \
  inline ENUMTYPE operator~(ENUMTYPE a) {                                            \
    return static_cast<ENUMTYPE>(~static_cast<std::underlying_type_t<ENUMTYPE>>(a)); \
  }                                                                                  \
  inline ENUMTYPE operator^(ENUMTYPE a, ENUMTYPE b) {                                \
    return static_cast<ENUMTYPE>(static_cast<std::underlying_type_t<ENUMTYPE>>(a) ^  \
                                 static_cast<std::underlying_type_t<ENUMTYPE>>(b));  \
  }                                                                                  \
  inline ENUMTYPE operator^=(ENUMTYPE& a, ENUMTYPE b) { return a = a ^ b; }

Macro to define bitwise operators for enum types.

Parameters

ENUMTYPE

The enum type to generate operators for

NNL_FLAG_ENUM

#define NNL_FLAG_ENUM

An attribute for defining flag enums.

Indicates that an enumeration represents a set of bitwise flags, where any combination of values is a valid case.