Is there a simple way to convert C++ enum to string?

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我在风中等你 2020-11-22 10:37

Suppose we have some named enums:

enum MyEnum {
      FOO,
      BAR = 0x50
};

What I googled for is a script (any language) that scans all

30条回答

时光取名叫无心 (楼主)

2020-11-22 10:48

#include 
#include 
#include  
#include 
#include 
#include 

#define SMART_ENUM(EnumName, ...)                                   \
class EnumName                                                      \
{                                                                   \
private:                                                            \
    static std::map nameMap;                      \
public:                                                             \
    enum {__VA_ARGS__};                                             \
private:                                                            \
    static std::map initMap()                     \
    {                                                               \
        using namespace std;                                        \
                                                                    \
        int val = 0;                                                \
        string buf_1, buf_2, str = #__VA_ARGS__;                    \
        replace(str.begin(), str.end(), '=', ' ');                  \
        stringstream stream(str);                                   \
        vector strings;                                     \
        while (getline(stream, buf_1, ','))                         \
            strings.push_back(buf_1);                               \
        map tmp;                                       \
        for(vector::iterator it = strings.begin();          \
                                               it != strings.end(); \
                                               ++it)                \
        {                                                           \
            buf_1.clear(); buf_2.clear();                           \
            stringstream localStream(*it);                          \
            localStream>> buf_1 >> buf_2;                           \
            if(buf_2.size() > 0)                                    \
                val = atoi(buf_2.c_str());                          \
            tmp[val++] = buf_1;                                     \
        }                                                           \
        return tmp;                                                 \
    }                                                               \
public:                                                             \
    static std::string toString(int aInt)                           \
    {                                                               \
        return nameMap[aInt];                                       \
    }                                                               \
};                                                                  \
std::map                                          \
EnumName::nameMap = EnumName::initMap();

Usage:

SMART_ENUM(MyEnum, ONE=1, TWO, THREE, TEN=10, ELEVEN)
cout<