Method from_original_index

src/common/MappedWstring.h:22–24

  IndexType to_original_index(IndexType cur_index) const { return !mapping.empty() ? mapping[cur_index] : cur_index; }

  IndexType from_original_index(IndexType cur_index) const {
    return !mapping.empty() ? static_cast<IndexType>(std::lower_bound(mapping.begin(), mapping.end(), cur_index) - mapping.begin()) : cur_index;
  }

  IndexType original_length() const { return !mapping.empty() ? mapping.back() : static_cast<IndexType>(str.size()); }