Function json_integer_option

3rdparty/lua/lua-cjson/lua_cjson.c:231–247

Process integer options for configuration functions */

/* Process integer options for configuration functions */
static int json_integer_option(lua_State *l, int optindex, int *setting,
                               int min, int max)
{
    char errmsg[64];
    int value;

    if (!lua_isnil(l, optindex)) {
        value = luaL_checkinteger(l, optindex);
        snprintf(errmsg, sizeof(errmsg), "expected integer between %d and %d", min, max);
        luaL_argcheck(l, min <= value && value <= max, 1, errmsg);
        *setting = value;
    }

    lua_pushinteger(l, *setting);

    return 1;
}

/* Process enumerated arguments for a configuration function */
static int json_enum_option(lua_State *l, int optindex, int *setting,