/// <summary>
/// Adiciona um novo item.
/// </summary>
/// <param name="key">Chave da entrada que será adicionada..</param>
/// <param name="value">Valor do item.</param>
internal void Add(long key, object value)
{
if (_index.Count == 0)
{
_head = key;
}
if (_index.ContainsKey(key))
{
var entry = (EvictionIndexEntry)_index[key];
if (entry != null)
{
entry.Insert(value);
}
}
else
{
var entry2 = new EvictionIndexEntry();
entry2.Insert(value);
_index[key] = entry2;
var entry3 = _index[_tail] as EvictionIndexEntry;
if (entry3 != null)
{
entry3.Next = key;
}
entry2.Previous = _tail;
}
if (key > _tail)
{
_tail = key;
}
}
/// <summary>
/// Insere um nova entrada para o indice.
/// </summary>
/// <param name="key">Chave que identifica a entrada.</param>
/// <param name="value">Valor da entrada.</param>
/// <param name="previous">Identificador da entrada anterior.</param>
/// <param name="next">Identificador da próxima entrada.</param>
internal void Insert(long key, object value, long previous, long next)
{
EvictionIndexEntry entry = _index[next] as EvictionIndexEntry;
EvictionIndexEntry entry2 = _index[previous] as EvictionIndexEntry;
if ((_index.Count == 0) || (key < _head))
{
_head = key;
}
if (_index.ContainsKey(key))
{
EvictionIndexEntry entry3 = (EvictionIndexEntry)_index[key];
if (entry3 != null)
{
entry3.Insert(value);
}
}
else
{
EvictionIndexEntry entry4 = new EvictionIndexEntry();
entry4.Insert(value);
_index[key] = entry4;
if ((entry2 == null) && (entry == null))
{
entry4.Next = -1;
entry4.Previous = -1;
}
else if ((entry2 == null) && (entry != null))
{
entry4.Next = next;
entry4.Previous = -1;
entry.Previous = key;
}
else if ((entry2 != null) && (entry == null))
{
entry4.Previous = previous;
entry4.Next = -1;
entry2.Next = key;
}
else
{
entry4.Previous = previous;
entry4.Next = next;
entry2.Next = key;
entry.Previous = key;
}
}
if (key > _tail)
{
_tail = key;
}
}