Function db_traceback

src/Chain/libraries/glua/ldblib.cpp:416–427

static int db_traceback(lua_State *L) {
    int arg;
    lua_State *L1 = getthread(L, &arg);
    const char *msg = lua_tostring(L, arg + 1);
    if (msg == nullptr && !lua_isnoneornil(L, arg + 1))  /* non-string 'msg'? */
        lua_pushvalue(L, arg + 1);  /* return it untouched */
    else {
        int level = (int)luaL_optinteger(L, arg + 2, (L == L1) ? 1 : 0);
        luaL_traceback(L, L1, msg, level);
    }
    return 1;
}


static const luaL_Reg dblib[] = {