public bool TryUpdate(TKey key, TValue value, TValue comparisonValue)
{
var oldValObj = DictionaryImpl.ToObjectValue(comparisonValue);
var newValObj = DictionaryImpl.ToObjectValue(value);
return(_table.PutIfMatch(key, newValObj, ref oldValObj, DictionaryImpl.ValueMatch.OldValue));
}
public bool TryAdd(TKey key, TValue value)
{
object oldValObj = null;
var newValObj = DictionaryImpl.ToObjectValue(value);
return(_table.PutIfMatch(key, newValObj, ref oldValObj, DictionaryImpl.ValueMatch.NullOrDead));
}
public bool Remove(KeyValuePair <TKey, TValue> item)
{
var oldValObj = DictionaryImpl.ToObjectValue(item.Value);
return(_table.PutIfMatch(item.Key, DictionaryImpl.TOMBSTONE, ref oldValObj,
DictionaryImpl.ValueMatch.OldValue));
}
public TValue GetOrAdd(TKey key, TValue value)
{
object oldValObj = null;
var newValObj = DictionaryImpl.ToObjectValue(value);
if (_table.PutIfMatch(key, newValObj, ref oldValObj, DictionaryImpl.ValueMatch.NullOrDead))
{
return(value);
}
// PERF: this would be nice to have as a helper,
// but it does not get inlined
if (default(TValue) == null && oldValObj == DictionaryImpl.NULLVALUE)
{
oldValObj = null;
}
return((TValue)oldValObj);
}
public TValue this[TKey key]
{
[MethodImpl(MethodImplOptions.AggressiveInlining)]
get
{
var oldValObj = _table.TryGetValue(key);
Debug.Assert(!(oldValObj is DictionaryImpl.Prime));
if (oldValObj != null)
{
// PERF: this would be nice to have as a helper,
// but it does not get inlined
TValue value;
if (default(TValue) == null && oldValObj == DictionaryImpl.NULLVALUE)
{
value = default(TValue);
}
else
{
value = (TValue)oldValObj;
}
return(value);
}
return(ThrowKeyNotFound());
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
set
{
object oldValObj = null;
var newValObj = DictionaryImpl.ToObjectValue(value);
_table.PutIfMatch(key, newValObj, ref oldValObj, DictionaryImpl.ValueMatch.Any);
}
}
