private PilePointer findPP(string Key)
{
char[] keys = Key.ToCharArray();
string strKey = "";
PilePointer currentPP = m_Root;
PrefixTreeNode current = (PrefixTreeNode)m_Pile.Get(currentPP);
bool contains = false;
foreach (char charKey in keys)
{
strKey += charKey;
int i = 0;
contains = false;
for (i = 0; i < current.Children.Length; i++)
{
if (current.Children[i].Key > charKey)
{
break;
}
if (current.Children[i].Key == charKey)
{
contains = true;
break;
}
}
if (i >= current.Children.Length)
{
break;
}
currentPP = current.Children[i].ValuePP;
current = (PrefixTreeNode)m_Pile.Get(currentPP);
}
return(contains ? currentPP : default(PilePointer));
}
private T find(string key)
{
T result = default(T);
PilePointer currentPP = findPP(key);
if (currentPP != default(PilePointer))
{
PrefixTreeNode current = (PrefixTreeNode)m_Pile.Get(currentPP);
result = current.ValuePP != default(PilePointer) ? (T)m_Pile.Get(current.ValuePP) : default(T);
}
return(result);
}
private void setValue(string key, T value)
{
char[] keys = key.ToCharArray();
string strKey = "";
PilePointer currentPP = m_Root;
PrefixTreeNode current = (PrefixTreeNode)m_Pile.Get(currentPP);
foreach (char charKey in keys)
{
strKey += charKey;
int i = 0;
for (i = 0; i < current.Children.Length; i++)
{
if (current.Children[i].ValuePP == default(PilePointer))
{
var tmp = newPrefixTreeNode();
Entry entry = new Entry()
{
Key = charKey, ValuePP = m_Pile.Put(tmp)
};
insertEntry(i, ref current.Children, entry);
m_Pile.Put(currentPP, current);
}
else if (current.Children[i].Key > charKey)
{
var tmp = newPrefixTreeNode();
Entry entry = new Entry()
{
Key = charKey, ValuePP = m_Pile.Put(tmp)
};
insertEntry(i, ref current.Children, entry);
m_Pile.Put(currentPP, current);
}
if (current.Children[i].Key == charKey)
{
break;
}
}
currentPP = current.Children[i].ValuePP;
current = (PrefixTreeNode)m_Pile.Get(currentPP);
}
if (current.ValuePP != default(PilePointer))
{
m_Pile.Put(current.ValuePP, value);
}
else
{
current.ValuePP = m_Pile.Put(value);
m_Pile.Put(currentPP, current);
m_Count++;
}
}
public bool Remove(string key)
{
bool result = false;
PilePointer currentPP = findPP(key);
if (currentPP != default(PilePointer))
{
PrefixTreeNode current = (PrefixTreeNode)m_Pile.Get(currentPP);
m_Pile.Delete(current.ValuePP);
current.ValuePP = default(PilePointer);
m_Pile.Put(currentPP, current);
m_Count--;
}
return(result);
}
private void clearItem(PilePointer pp)
{
if (pp == default(PilePointer))
{
return;
}
PrefixTreeNode current = (PrefixTreeNode)m_Pile.Get(pp);
foreach (Entry entry in current.Children)
{
if (entry.ValuePP != default(PilePointer))
{
clearItem(entry.ValuePP);
}
}
if (current.ValuePP != default(PilePointer))
{
m_Pile.Delete(current.ValuePP);
}
m_Pile.Delete(pp);
}