Exemplo n.º 1
0
inline void SearchTreeNode::RecalcDepth(BasicSearchTree* tree)
{
    unsigned int curdepth = 0;
    SearchTreeNode *parent = GetParent(tree);
    if (parent)
        curdepth = parent->GetDepth();
    m_Depth = curdepth + m_LabelLen;
}
Exemplo n.º 2
0
void SearchTreeNode::UpdateItems(BasicSearchTree* tree)
{
    SearchTreeNode* parentnode = tree->GetNode(m_Parent,true);
    if (!parentnode)
       return;
    SearchTreeItemsMap newmap;
    size_t mindepth = parentnode->GetDepth();
    SearchTreeItemsMap::iterator i;
    newmap.clear();
    for (i = m_Items.begin();i!=m_Items.end();i++)
    {
        if (i->first <= mindepth)
            parentnode->m_Items[i->first]=i->second;
        else
            newmap[i->first]=i->second;
    }
    m_Items.clear();
    for (i = newmap.begin();i!=newmap.end();i++)
        m_Items[i->first]=i->second;
}
Exemplo n.º 3
0
SearchTreePoint BasicSearchTree::AddNode(const wxString& s, nSearchTreeNode nparent)
{
    SearchTreePoint result(0,0);
    nSearchTreeNode n = 0;
    bool found = this->FindNode(s,nparent,&result);
    if (!found)
    {
        // Create new node

        // If necessary, split the edge with a new node 'middle'
        // If result is exactly a node, middle will be just result.n.
        nSearchTreeNode middle = SplitBranch(result.n,result.depth);

        // Now add the node to the middle node
        SearchTreeNode* newnode;
        wxString newlabel;
        if (m_Nodes[middle]->IsLeaf())
        {
            // If it's a leaf node, just extend the label and change
            // the new node's depth to reflect the changes.
            n = middle;
            newnode = m_Nodes[n];

            // We take the part of the string that corresponds to node middle.
            // Since s starts at nparent's depth, we just get the difference and
            // it will be the position inside the string.
            newlabel = s.substr(m_Nodes[middle]->GetLabelStartDepth() - m_Nodes[nparent]->GetDepth());

            // Modify the leaf node's label to extend the point
            // Since it's a leaf node, we just concatenate to the current label the missing part.
            unsigned int oldlen = newnode->GetDepth() - newnode->GetLabelStartDepth();
            if (oldlen < newlabel.length()) // Safety check against segfaults
            {
                m_Labels[newnode->GetLabelNo()] << newlabel.substr(oldlen);
                m_Labels[newnode->GetLabelNo()].Shrink();
            }
            newnode->SetLabel(newnode->GetLabelNo(),newnode->GetLabelStart(),newlabel.length());
            newnode->RecalcDepth(this);
        }
        else
        {
            // Get the string's depth. This will be the depth of our new leaf node.
            size_t newdepth = m_Nodes[nparent]->GetDepth() + s.length();

            // start = middle's depth - nparent's depth.
            newlabel = s.substr(m_Nodes[middle]->GetDepth() - m_Nodes[nparent]->GetDepth());

            // Now we create the new label to be accessed by the leaf node "newnode".
            m_Labels.push_back(newlabel);
            nSearchTreeLabel nlabel = m_Labels.size() - 1;
            m_Labels[nlabel].Shrink();

            // Finally, we create the new node and link it to "middle".
            newnode = CreateNode(newdepth,middle,nlabel,0,newlabel.length());
            m_Nodes.push_back(newnode);
            n = m_Nodes.size()-1;
            m_Nodes[middle]->m_Children[newlabel[0u]]=n;
        }
        result.n = n;
        result.depth = newnode->GetDepth();

    }
    return result;
}