258   String subject_ptr = *subject;  in Match()  local
261   int char_length = subject_ptr.length() - start_offset;  in Match()
266   if (StringShape(subject_ptr).IsCons()) {  in Match()
267     DCHECK_EQ(0, ConsString::cast(subject_ptr).second().length());  in Match()
268     subject_ptr = ConsString::cast(subject_ptr).first();  in Match()
269   } else if (StringShape(subject_ptr).IsSliced()) {  in Match()
270     SlicedString slice = SlicedString::cast(subject_ptr);  in Match()
271     subject_ptr = slice.parent();  in Match()
274   if (StringShape(subject_ptr).IsThin()) {  in Match()
275     subject_ptr = ThinString::cast(subject_ptr).actual();  in Match()
278   bool is_one_byte = subject_ptr.IsOneByteRepresentation();  in Match()
279   DCHECK(subject_ptr.IsExternalString() || subject_ptr.IsSeqString());  in Match()
285       subject_ptr.AddressOfCharacterAt(start_offset + slice_offset, no_gc);  in Match()