enum_type.h

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/******************************************************************************
The MIT License(MIT)
 
Embedded Template Library.
https://github.com/ETLCPP/etl
https://www.etlcpp.com
 
Copyright(c) 2014 John Wellbelove
 
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#ifndef ETL_ENUM_TYPE_INCLUDED
#define ETL_ENUM_TYPE_INCLUDED
 
#include "platform.h"

 
//*****************************************************************************
// The declaration of the member functions and the first section of the 'c_str'
// function.
//*****************************************************************************
#define ETL_DECLARE_ENUM_TYPE(TypeName, ValueType)   \
  typedef ValueType value_type;                      \
  ETL_CONSTEXPR     TypeName()                       \
    : value(static_cast<enum_type>(value_type()))    \
  {                                                  \
  }                                                  \
  ETL_CONSTEXPR TypeName(enum_type value_)           \
    : value(value_)                                  \
  {                                                  \
  }                                                  \
  ETL_CONSTEXPR explicit TypeName(value_type value_) \
    : value(static_cast<enum_type>(value_))          \
  {                                                  \
  }                                                  \
  ETL_CONSTEXPR operator value_type() const          \
  {                                                  \
    return static_cast<value_type>(value);           \
  }                                                  \
  ETL_CONSTEXPR value_type get_value() const         \
  {                                                  \
    return static_cast<value_type>(value);           \
  }                                                  \
  ETL_CONSTEXPR enum_type get_enum() const           \
  {                                                  \
    return value;                                    \
  }                                                  \
  ETL_CONSTEXPR14 const char* c_str() const          \
  {                                                  \
    switch (value)                                   \
    {
//*****************************************************************************
// A case in the 'c_str' function's switch statement.
//*****************************************************************************
#define ETL_ENUM_TYPE(value, name) \
  case value: return name;
 
//*****************************************************************************
// The final section of the 'c_str' function and the value declaration.
//*****************************************************************************
#define ETL_END_ENUM_TYPE \
  default: return "?";    \
    }                     \
    }                     \
                          \
  private:                \
                          \
    enum_type value;
 
#endif