1550     CordRep* subnode = Ref(current_leaf_);  in AdvanceAndReadBytes()  local
1552         subnode->tag == EXTERNAL ? subnode->external()->base : subnode->data;  in AdvanceAndReadBytes()
1553     subnode = NewSubstring(subnode, current_chunk_.data() - data, n);  in AdvanceAndReadBytes()
1554     subcord.contents_.set_tree(VerifyTree(subnode));  in AdvanceAndReadBytes()
1562   CordRep* subnode = Ref(current_leaf_);  in AdvanceAndReadBytes()  local
1563   if (current_chunk_.size() < subnode->length) {  in AdvanceAndReadBytes()
1565         subnode->tag == EXTERNAL ? subnode->external()->base : subnode->data;  in AdvanceAndReadBytes()
1566     subnode = NewSubstring(subnode, current_chunk_.data() - data,  in AdvanceAndReadBytes()
1588     subnode = Concat(subnode, Ref(node));  in AdvanceAndReadBytes()
1597     subcord.contents_.set_tree(VerifyTree(subnode));  in AdvanceAndReadBytes()
1610       subnode = Concat(subnode, Ref(node->concat()->left));  in AdvanceAndReadBytes()
1629   if (n > 0) subnode = Concat(subnode, NewSubstring(Ref(node), offset, n));  in AdvanceAndReadBytes()
1635   subcord.contents_.set_tree(VerifyTree(subnode));  in AdvanceAndReadBytes()