Method substr

extern/re2/re2/stringpiece.cc:22–26

}

StringPiece StringPiece::substr(size_type pos, size_type n) const {
  if (pos > size_) pos = size_;
  if (n > size_ - pos) n = size_ - pos;
  return StringPiece(data_ + pos, n);
}

StringPiece::size_type StringPiece::find(const StringPiece& s,
                                         size_type pos) const {