question on the GetDeepestMatchingPosition function

[ollydbg]

This is a bit strange.

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inline unsigned int SearchTreeNode::GetDeepestMatchingPosition(BasicSearchTree* tree, const wxString& s,unsigned int StringStartDepth)

I carefully examined the code, I found that the above function will always be called with the parameter StringStartDepth==0.

The only existence of this call is in FindNode().

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bool BasicSearchTree::FindNode(const wxString& s, nSearchTreeNode nparent, SearchTreePoint* result)
{
        size_t top_depth = m_pNodes[nparent]->GetDepth();
       ......
        unsigned int newdepth = childnode->GetDeepestMatchingPosition(this,s,top_depth);
       ......
}


But all the FindNode() function was used like below( the second parameter is always 0 )

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FindNode(s, 0, &resultpos)


So, the root node's parent is itself. and its depth is surely zero.


Any comments?  Thanks.