Defold - auto register enums

file.cpp

// test compile
typedef double lua_Number;
typedef struct {} lua_State;
void lua_pushnumber (lua_State *L, lua_Number n) {}
void lua_setfield (lua_State *L, int index, const char *k) {}
// test

#include <stdlib.h>
#include <string.h>

#define DEFOLD_ENUM(name, ...) \
enum name { __VA_ARGS__	};\
const char* DEFOLD_ENUM_##name##_items = #__VA_ARGS__;

#define DEFOLD_REGISTER_ENUM(lua, name) \
register_enum(lua, DEFOLD_ENUM_##name##_items)

void register_enum(lua_State* L, const char* items) {
    char *copy, *token, *temp;
    int index = 0;
    temp = copy = strdup(items);

    while ((token = strsep(&temp, ", ")) != NULL) {
        lua_pushnumber(L, (lua_Number) index);
        lua_setfield(L, -2, token);
        index++;
    }

    free(copy);
}

DEFOLD_ENUM(CONST,
    FIRST,
    SECOND,
    THIRD
);

int main()
{
    lua_State* L;

    DEFOLD_REGISTER_ENUM(L, CONST);
}