234   String* subject_ptr = *subject;  in Match()  local
237   int char_length = subject_ptr->length() - start_offset;  in Match()
242   if (StringShape(subject_ptr).IsCons()) {  in Match()
243     DCHECK_EQ(0, ConsString::cast(subject_ptr)->second()->length());  in Match()
244     subject_ptr = ConsString::cast(subject_ptr)->first();  in Match()
245   } else if (StringShape(subject_ptr).IsSliced()) {  in Match()
246     SlicedString* slice = SlicedString::cast(subject_ptr);  in Match()
247     subject_ptr = slice->parent();  in Match()
250   if (StringShape(subject_ptr).IsThin()) {  in Match()
251     subject_ptr = ThinString::cast(subject_ptr)->actual();  in Match()
254   bool is_one_byte = subject_ptr->IsOneByteRepresentation();  in Match()
255   DCHECK(subject_ptr->IsExternalString() || subject_ptr->IsSeqString());  in Match()
260       StringCharacterPosition(subject_ptr, start_offset + slice_offset);  in Match()