Method Borrowed

common/internal/byte_string.cc:147–163

}

ByteString ByteString::Borrowed(Borrower borrower, absl::string_view string) {
  ABSL_DCHECK(borrower != Borrower::None()) << "Borrowing from Owner::None()";
  auto* arena = borrower.arena();
  if (string.size() <= kSmallByteStringCapacity || arena != nullptr) {
    return ByteString(arena, string);
  }
  const auto* refcount = BorrowerRelease(borrower);
  // A nullptr refcount indicates somebody called us to borrow something that
  // has no owner. If this is the case, we fallback to assuming operator
  // new/delete and convert it to a reference count.
  if (refcount == nullptr) {
    std::tie(refcount, string) = MakeReferenceCountedString(string);
  } else {
    StrongRef(*refcount);
  }
  return ByteString(refcount, string);
}

ByteString ByteString::Borrowed(Borrower borrower, const absl::Cord& cord) {
  ABSL_DCHECK(borrower != Borrower::None()) << "Borrowing from Owner::None()";