json_never_inline T decode_integer_range_with_overflow()

in include/spotify/json/codec/number.hpp [151:172]

• 20 lines of code
• 3 McCabe index (conditional complexity)

json_never_inline T decode_integer_range_with_overflow(
    decode_context & /*context*/,
    const char *begin,
    const char *end,
    const T initial_value,
    bool &did_overflow) {
  T value = initial_value;

  using intops = integer_ops<T, is_positive>;
  for (auto it = begin; it != end; ++it) {
    const auto c = (*it);
    const auto i = to_integer<T>(c);
    const auto old_value = value;
    value = intops::accumulate(value * 10, i);
    if (json_unlikely(intops::is_overflow(old_value, value))) {
      did_overflow = true;
      return old_value;
    }
  }

  return value;
}