public bool Sync()
{
IsChanged = FAutoValidate ? FNodeIn.PinIsChanged : FNodeIn.Validate();
if (IsChanged)
{
object usI;
FNodeIn.GetUpstreamInterface(out usI);
FNodeIn.GetUpStreamSlices(out FLength, out FUpStreamSlices);
// Check fastest way first: TUpstream == T
var wrapper = usI as DynamicTypeWrapper;
if (wrapper != null)
{
usI = wrapper.Value;
}
FUpstreamStream = usI as MemoryIOStream <T>;
if (FUpstreamStream == null)
{
// TUpstream is a subtype of T
// Copy the upstream stream through the covariant IEnumerable interface
var enumerable = usI as IEnumerable <T>;
if (enumerable != null)
{
FUpstreamStream = enumerable.ToStream();
}
if (FUpstreamStream == null)
{
// TUpstream to T needs explicit cast
// For example TUpstream is a value type and T is a reference type
var objects = usI as IEnumerable;
if (objects != null)
{
FUpstreamStream = objects.Cast <T>().ToStream();
}
else
{
// Not connected
FUpstreamStream = FNullStream;
FUpstreamStream.Length = FLength;
using (var writer = FUpstreamStream.GetWriter())
while (!writer.Eos)
{
writer.Write(FDefaultValue);
}
}
}
}
}
return(IsChanged);
}
public bool Sync()
{
IsChanged = FAutoValidate ? FNodeIn.PinIsChanged : FNodeIn.Validate();
if (IsChanged)
{
object usI;
FNodeIn.GetUpstreamInterface(out usI);
// Check fastest way first: TUpstream == T
FUpstreamStream = usI as MemoryIOStream <T>;
if (FUpstreamStream != null)
{
FNodeIn.GetUpStreamSlices(out FLength, out FUpStreamSlices);
}
else
{
FLength = FNodeIn.SliceCount;
// TUpstream is a subtype of T
var enumerable = usI as IEnumerable <T>;
if (enumerable != null)
{
FUpstreamStream = new MemoryIOStream <T>(FLength);
FUpstreamStream.Length = FLength;
using (var writer = FUpstreamStream.GetWriter())
foreach (var item in enumerable)
{
writer.Write(item);
}
}
else
{
// Not connected
FUpstreamStream = FNullStream;
FUpstreamStream.Length = FLength;
}
}
}
return(IsChanged);
}