51   rows_ = other.rows_;  in operator =()
52   for (Rows::iterator it = rows_.begin(); it != rows_.end(); ++it) {  in operator =()
62   Rows::const_iterator it1 = rows_.begin();  in Equals()
63   Rows::const_iterator it2 = region.rows_.begin();  in Equals()
64   while (it1 != rows_.end()) {  in Equals()
65     if (it2 == region.rows_.end() || it1->first != it2->first ||  in Equals()
74   return it2 == region.rows_.end();  in Equals()
78   for (Rows::iterator row = rows_.begin(); row != rows_.end(); ++row) {  in Clear()
81   rows_.clear();  in Clear()
99   Rows::iterator row = rows_.upper_bound(top);  in AddRect()
101     if (row == rows_.end() || top < row->second->top) {  in AddRect()
105       if (row != rows_.end() && row->second->top < bottom)  in AddRect()
107       row = rows_.insert(row, Rows::value_type(bottom, new Row(top, bottom)));  in AddRect()
113       Rows::iterator new_row = rows_.insert(  in AddRect()
123       Rows::iterator new_row = rows_.insert(  in AddRect()
140   if (row != rows_.end())  in AddRect()
151   assert(row != rows_.end());  in MergeWithPrecedingRow()
153   if (row != rows_.begin()) {  in MergeWithPrecedingRow()
163       rows_.erase(previous_row);  in MergeWithPrecedingRow()
180   Rows::const_iterator it1 = region1.rows_.begin();  in Intersect()
181   Rows::const_iterator end1 = region1.rows_.end();  in Intersect()
182   Rows::const_iterator it2 = region2.rows_.begin();  in Intersect()
183   Rows::const_iterator end2 = region2.rows_.end();  in Intersect()
205     Rows::iterator new_row = rows_.insert(  in Intersect()
206         rows_.end(), Rows::value_type(bottom, new Row(top, bottom)));  in Intersect()
211       rows_.erase(new_row);  in Intersect()
276   if (region.rows_.empty())  in Subtract()
280   Rows::const_iterator row_b = region.rows_.begin();  in Subtract()
287   Rows::iterator row_a = rows_.upper_bound(top);  in Subtract()
291   while (row_a != rows_.end() && row_b != region.rows_.end()) {  in Subtract()
306       Rows::iterator new_row = rows_.insert(  in Subtract()
316         if (row_b != region.rows_.end())  in Subtract()
328           rows_.insert(row_a, Rows::value_type(bottom, new Row(top, bottom)));  in Subtract()
343       if (row_b != region.rows_.end())  in Subtract()
353       rows_.erase(row_to_delete);  in Subtract()
360   if (row_a != rows_.end())  in Subtract()
373   for (Rows::iterator it = rows_.begin(); it != rows_.end(); ++it) {  in Translate()
393     new_rows.swap(rows_);  in Translate()
397   rows_.swap(region->rows_);  in Swap()
503       row_(region.rows_.begin()),  in Iterator()
504       previous_row_(region.rows_.end()) {  in Iterator()
515   return row_ == region_.rows_.end();  in IsAtEnd()
526       if (row_ != region_.rows_.end()) {  in Advance()
538     if (previous_row_ != region_.rows_.end() &&  in Advance()
560   } while (bottom_row != region_.rows_.end() &&  in UpdateCurrentRect()