//O(logn)
protected bool TryFindRangeData(TNode node, RangePredicator <TEl> rangePredicator, out TRange data)
{
var rangeCompliant = rangePredicator.RangeCompliance(node.Min, node.Max);
if (rangeCompliant == 1)
{
data = node.SubtreeData;
return(true);
}
if (rangeCompliant == -1)
{
data = default(TRange);
return(false);
}
TRange leftData = default(TRange), rightData = default(TRange), descendantsData = default(TRange);
var leftFound = node.Left != null && TryFindRangeData(node.Left, rangePredicator, out leftData);
var rightFound = node.Right != null && TryFindRangeData(node.Right, rangePredicator, out rightData);
//descendant data
if (!leftFound && rightFound)
{
descendantsData = rightData;
}
else if (!rightFound && leftFound)
{
descendantsData = leftData;
}
else if (leftFound && rightFound)
{
descendantsData = RangeConsolidator(leftData, rightData);
}
var nodeCompliant = rangePredicator.RangeCompliance(node.Element, node.Element) == 1;
//final data
if (nodeCompliant)
{
if (!leftFound && !rightFound)
{
data = node.NodeData;
}
else
{
data = RangeConsolidator(node.NodeData, descendantsData);
}
}
else
{
if (!leftFound && !rightFound)
{
data = default(TRange);
return(false);
}
data = descendantsData;
}
return(true);
}
public bool TryFindRangeData(RangePredicator <TEl> rangePredicator, out TRange data)
{
return(TryFindRangeData(Root, rangePredicator, out data));
}
