Qt 比对TreeItem节点

 1 void TreeModel::settingsUpdate(const QStringList &lines){
 2      QList<TreeItem*> parents;
 3      TreeItem* it1,* item1 = new TreeItem(rootItem->itemData);
 4      TreeItem* it2,* item2 = rootItem;
 5      QList<int> indexs;
 6      int i1 =0 ,i2 = 0;
 7      setupModelData(lines,item1);
 8  _repeat:
 9      for(; i1 < item1->childCount() ; ++i1)
10          for(; i2 < item2->childCount() ; ++i2)
11          {
12              it1 = item1->child(i1);
13              it2 = item2->child(i2);
14              if( it1->data(0).toString() == it2->data(0).toString() )
15              {
16                  if(it1->childCount() == 0 )
17                  {
18                      QModelIndex index = createIndex(it2->childNumber(), 2, it2);
19                      if (it2->setData(index.column(), it1->data(2)))
20                          emit dataChanged(index, index);
21                     settingItem.enqueue(it2);
22                     ++i2;
23                     break;
24                  }
25                  else if(it2->childCount() > 0)
26                  {
27                      parents << item1 << item2;
28                      indexs  << i1 + 1 << i2 + 1;
29                      item1 = it1;
30                      item2 = it2;
31                      i1 = 0 ;
32                      i2 = 0 ;
33                      goto _repeat;
34                  }
35              }
36          }
37      if(!parents.isEmpty())
38      {
39          item2 = parents.last();
40          parents.pop_back();
41          item1 = parents.last();
42          parents.pop_back();
43 
44          i2 = indexs.last();
45          indexs.pop_back();
46          i1 = indexs.last();
47          indexs.pop_back();
48          goto _repeat;
49      }
50      delete item1;
51      optMode = OptWrite;
52 }