bool call()

in csrc/velox/functions/string_functions.h [359:404]

• 40 lines of code
• 7 McCabe index (conditional complexity)

bool call(bool& result, const arg_type<velox::Varchar>& input) {
  using namespace velox::functions;
  using namespace internal;

  size_t size = input.size();
  if (size == 0) {
    result = false;
    return true;
  }

  size_t index = 0;
  bool has_alph = false;
  bool has_alph_upper = false;
  while (index < size) {
    int codePointSize;
    utf8proc_int32_t codePoint =
        utf8proc_codepoint(input.data() + index, codePointSize);
    utf8proc_category_t category =
        static_cast<utf8proc_category_t>(utf8proc_category(codePoint));

    if (Utf8CatUtils::isAlpha(category)) {
      has_alph = true;
      if (Utf8CatUtils::isUpper(category)) {
        // False if it has more than 1 upper or title case
        if (has_alph_upper) {
          result = false;
          return true;
        } else {
          has_alph_upper = true;
        }
      } else { // isLower
        if (!has_alph_upper) {
          // False if it only has lower case
          result = false;
          return true;
        }
      }
    } else {
      has_alph_upper = false;
    }

    index += codePointSize;
  }
  result = has_alph;
  return true;
}