/// <summary>
/// Skips the next entry value, unless it is an <see cref="EntryType.EndOfNode"/> or an <see cref="EntryType.EndOfArray"/>. If the next entry value is an <see cref="EntryType.StartOfNode"/> or an <see cref="EntryType.StartOfArray"/>, all of its contents will be processed, deserialized and registered in the deserialization context, so that internal reference values are not lost to entries further down the stream.
/// </summary>
public virtual void SkipEntry()
{
var peekedEntry = this.PeekEntry();
if (peekedEntry == EntryType.StartOfNode)
{
Type type;
bool exitNode = true;
this.EnterNode(out type);
try
{
if (type != null)
{
// We have the necessary metadata to read this type, and register all of its reference values (perhaps including itself) in the serialization context
// Sadly, we have no choice but to risk boxing of structs here
// Luckily, this is a rare case
if (FormatterUtilities.IsPrimitiveType(type))
{
// It is a boxed primitive type; we read the value and register it
var serializer = Serializer.Get(type);
object value = serializer.ReadValueWeak(this);
if (this.CurrentNodeId >= 0)
{
this.Context.RegisterInternalReference(this.CurrentNodeId, value);
}
}
else
{
var formatter = FormatterLocator.GetFormatter(type, this.Context.Config.SerializationPolicy);
object value = formatter.Deserialize(this);
if (this.CurrentNodeId >= 0)
{
this.Context.RegisterInternalReference(this.CurrentNodeId, value);
}
}
}
else
{
// We have no metadata, and reference values might be lost
// We must read until a node on the same level terminates
while (true)
{
peekedEntry = this.PeekEntry();
if (peekedEntry == EntryType.EndOfStream)
{
break;
}
else if (peekedEntry == EntryType.EndOfNode)
{
break;
}
else if (peekedEntry == EntryType.EndOfArray)
{
this.ReadToNextEntry(); // Consume end of arrays that we can potentially get stuck on
}
else
{
this.SkipEntry();
}
}
}
}
catch (SerializationAbortException ex)
{
exitNode = false;
throw ex;
}
finally
{
if (exitNode)
{
this.ExitNode();
}
}
}
else if (peekedEntry == EntryType.StartOfArray)
{
// We must read until an array on the same level terminates
this.ReadToNextEntry(); // Consume start of array
while (true)
{
peekedEntry = this.PeekEntry();
if (peekedEntry == EntryType.EndOfStream)
{
break;
}
else if (peekedEntry == EntryType.EndOfArray)
{
this.ReadToNextEntry(); // Consume end of array and break
break;
}
else if (peekedEntry == EntryType.EndOfNode)
{
this.ReadToNextEntry(); // Consume end of nodes that we can potentially get stuck on
}
else
{
this.SkipEntry();
}
}
}
else if (peekedEntry != EntryType.EndOfArray && peekedEntry != EntryType.EndOfNode) // We can't skip end of arrays and end of nodes
{
this.ReadToNextEntry(); // We can just skip a single value entry
}
}
