C/C++获取枚举值名称

#define COLOR_ENUM(X) \
    X(RED)           \
    X(GREEN)         \
    X(BLUE)

#define DECLARE_ENUM(name) name,

enum Color { COLOR_ENUM(DECLARE_ENUM) };

enum Color {
    RED,
    GREEN,
    BLUE
};

#define ENUM_CASE(name) case name: return #name;

const char *color_to_string(enum Color color) {
  switch (color) {
    COLOR_ENUM(ENUM_CASE)
  default:
    return "UNKNOWN";
  }
}

const char *color_to_string(enum Color color) {
    switch (color) {
        case RED: return "RED";
        case GREEN: return "GREEN";
        case BLUE: return "BLUE";
    default:
        return "UNKNOWN";
    }
}