public static void AppendExtensionData(IExtensible instance, ProtoWriter writer)
{
if (instance == null)
{
throw new ArgumentNullException("instance");
}
if (writer == null)
{
throw new ArgumentNullException("writer");
}
if (writer.wireType != WireType.None)
{
throw ProtoWriter.CreateException(writer);
}
IExtension extn = instance.GetExtensionObject(false);
if (extn != null)
{
Stream source = extn.BeginQuery();
try
{
ProtoWriter.CopyRawFromStream(source, writer);
}
finally
{
extn.EndQuery(source);
}
}
}
internal static void AppendExtendValue <TValue>(TypeModel model, IExtensible instance, int tag, DataFormat format, object value)
{
if (instance == null)
{
throw new ArgumentNullException("instance");
}
if (value == null)
{
throw new ArgumentNullException("value");
}
//TODO: CheckTagNotInUse
//model.CheckTagNotInUse(tag);
// obtain the extension object and prepare to write
IExtension extn = instance.GetExtensionObject(true);
if (extn == null)
{
throw new InvalidOperationException("No extension object available; appended data would be lost.");
}
bool commit = false;
Stream stream = extn.BeginAppend();
try {
using (ProtoWriter writer = new ProtoWriter(stream, model, null)) {
model.TrySerializeAuxiliaryType(writer, null, format, tag, value, false);
writer.Close();
}
commit = true;
}
finally {
extn.EndAppend(stream, commit);
}
}
/// <summary>
/// Copies any extension data stored for the instance to the underlying stream
/// </summary>
public static void AppendExtensionData(IExtensible instance, ProtoWriter writer)
{
if (instance == null)
{
throw new ArgumentNullException("instance");
}
if (writer == null)
{
throw new ArgumentNullException("writer");
}
// we expect the writer to be raw here; the extension data will have the
// header detail, so we'll copy it implicitly
if (writer.wireType != WireType.None)
{
throw CreateException(writer);
}
IExtension extn = instance.GetExtensionObject(false);
if (extn != null)
{
// unusually we *don't* want "using" here; the "finally" does that, with
// the extension object being responsible for disposal etc
Stream source = extn.BeginQuery();
try
{
CopyRawFromStream(source, writer);
}
finally { extn.EndQuery(source); }
}
}
public static void AppendExtensionData(IExtensible instance, ProtoWriter writer)
{
if (instance == null)
{
throw new ArgumentNullException("instance");
}
if (writer == null)
{
throw new ArgumentNullException("writer");
}
if (writer.wireType != WireType.None)
{
throw CreateException(writer);
}
IExtension extensionObject = instance.GetExtensionObject(createIfMissing: false);
if (extensionObject != null)
{
Stream stream = extensionObject.BeginQuery();
try
{
CopyRawFromStream(stream, writer);
}
finally
{
extensionObject.EndQuery(stream);
}
}
}
public void AppendExtendValue(TypeModel model, IExtensible instance, int tag, BinaryDataFormat format, object value)
{
#if FEAT_IKVM
throw new NotSupportedException();
#else
if (instance == null)
{
throw new ArgumentNullException(nameof(instance));
}
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
// obtain the extension object and prepare to write
IExtension extn = instance.GetExtensionObject(true);
if (extn == null)
{
throw new InvalidOperationException("No extension object available; appended data would be lost.");
}
bool commit = false;
Stream stream = extn.BeginAppend();
try {
using (ProtoWriter writer = new ProtoWriter(stream, model, null)) {
model.TrySerializeAuxiliaryType(writer, null, format, tag, value, false, true);
writer.Close();
}
commit = true;
}
finally {
extn.EndAppend(stream, commit);
}
#endif
}
// Token: 0x06003293 RID: 12947 RVA: 0x00127460 File Offset: 0x00125860
internal static void AppendExtendValue(TypeModel model, IExtensible instance, int tag, DataFormat format, object value)
{
if (instance == null)
{
throw new ArgumentNullException("instance");
}
if (value == null)
{
throw new ArgumentNullException("value");
}
IExtension extensionObject = instance.GetExtensionObject(true);
if (extensionObject == null)
{
throw new InvalidOperationException("No extension object available; appended data would be lost.");
}
bool commit = false;
Stream stream = extensionObject.BeginAppend();
try
{
using (ProtoWriter protoWriter = new ProtoWriter(stream, model, null))
{
model.TrySerializeAuxiliaryType(protoWriter, null, format, tag, value, false);
protoWriter.Close();
}
commit = true;
}
finally
{
extensionObject.EndAppend(stream, commit);
}
}
internal static int Serialize(T instance, SerializationContext context)
{
// check for inheritance; if the instance is a subclass, then we
// should serialize the sub-type first, allowing for more efficient
// deserialization; note that we don't push the instance onto the
// stack yet - we'll do that within each instance (otherwise deep
// items could incorrectly count as cyclic).
Type actualType = instance.GetType();
int total = 0, len;
Callback(CallbackType.BeforeSerialization, instance);
if (actualType != typeof(T))
{
bool subclassFound = false;
foreach (KeyValuePair <Type, Property <T, T> > subclass in subclasses)
{
if (subclass.Key.IsAssignableFrom(actualType))
{
total += subclass.Value.Serialize(instance, context);
subclassFound = true;
break;
}
}
if (!subclassFound)
{
throw new ProtoException("Unexpected type found during serialization; types must be included with ProtoIncludeAttribute; "
+ "found " + actualType.Name + " passed as " + typeof(T).Name);
}
}
context.Push(instance);
for (int i = 0; i < writeProps.Length; i++)
{
// note that this serialization includes the headers...
total += writeProps[i].Serialize(instance, context);
}
IExtensible extensible = instance as IExtensible;
IExtension extra = extensible == null ? null : extensible.GetExtensionObject(false);
if (extra != null && (len = extra.GetLength()) > 0)
{
Stream extraStream = extra.BeginQuery();
try
{
context.WriteFrom(extraStream, len);
total += len;
}
finally
{
extra.EndQuery(extraStream);
}
}
context.Pop(instance);
Callback(CallbackType.AfterSerialization, instance);
return(total);
}
#pragma warning disable RCS1163, IDE0060 // Unused parameter.
/// <summary>
/// All this does is call GetExtendedValuesTyped with the correct type for "instance";
/// this ensures that we don't get issues with subclasses declaring conflicting types -
/// the caller must respect the fields defined for the type they pass in.
/// </summary>
internal static IEnumerable GetExtendedValues(TypeModel model, Type type, IExtensible instance, int tag, DataFormat format, bool singleton, bool allowDefinedTag)
#pragma warning restore RCS1163, IDE0060 // Unused parameter.
{
model ??= TypeModel.DefaultModel;
if (instance == null)
{
ThrowHelper.ThrowArgumentNullException(nameof(instance));
}
if (tag <= 0)
{
ThrowHelper.ThrowArgumentOutOfRangeException(nameof(tag));
}
#pragma warning disable RCS1227 // Validate arguments correctly.
IExtension extn = instance.GetExtensionObject(false);
#pragma warning restore RCS1227 // Validate arguments correctly.
if (extn == null)
{
yield break;
}
Stream stream = extn.BeginQuery();
try
{
object value = null;
SerializationContext ctx = new SerializationContext();
var state = ProtoReader.State.Create(stream, model, ctx, ProtoReader.TO_EOF).Solidify();
try
{
while (model.TryDeserializeAuxiliaryType(ref state, format, tag, type, ref value, true, true, false, false, null) && value != null)
{
if (!singleton)
{
yield return(value);
value = null; // fresh item each time
}
}
if (singleton && value != null)
{
yield return(value);
}
}
finally
{
state.Dispose();
}
}
finally
{
extn.EndQuery(stream);
}
}
internal static void AppendExtendValue(TypeModel model, IExtensible instance, int tag, DataFormat format, object value)
{
model ??= TypeModel.DefaultModel;
if (instance == null)
{
ThrowHelper.ThrowArgumentNullException(nameof(instance));
}
if (value == null)
{
ThrowHelper.ThrowArgumentNullException(nameof(value));
}
// TODO
//model.CheckTagNotInUse(tag);
// obtain the extension object and prepare to write
IExtension extn = instance.GetExtensionObject(true);
if (extn == null)
{
ThrowHelper.ThrowInvalidOperationException("No extension object available; appended data would be lost.");
}
bool commit = false;
Stream stream = extn.BeginAppend();
try
{
var state = ProtoWriter.State.Create(stream, model, null);
try
{
model.TrySerializeAuxiliaryType(ref state, null, format, tag, value, false, null);
state.Close();
}
catch
{
state.Abandon();
throw;
}
finally
{
state.Dispose();
}
#pragma warning disable IDE0059 // Unnecessary assignment of a value - the rule is wrong; this matters
commit = true;
#pragma warning restore IDE0059
}
finally
{
extn.EndAppend(stream, commit);
}
}
internal static IEnumerable GetExtendedValues(TypeModel model, Type type, IExtensible instance, int tag, DataFormat format, bool singleton, bool allowDefinedTag)
{
if (instance == null)
{
throw new ArgumentNullException("instance");
}
if (tag <= 0)
{
throw new ArgumentOutOfRangeException("tag");
}
IExtension extensionObject = instance.GetExtensionObject(false);
if (extensionObject != null)
{
Stream stream = extensionObject.BeginQuery();
object obj = null;
ProtoReader protoReader = null;
try
{
SerializationContext serializationContext = new SerializationContext();
protoReader = ProtoReader.Create(stream, model, serializationContext, -1);
while (model.TryDeserializeAuxiliaryType(protoReader, format, tag, type, ref obj, true, false, false, false) && obj != null)
{
if (singleton)
{
continue;
}
yield return(obj);
obj = null;
}
if (!singleton || obj == null)
{
goto Label0;
}
yield return(obj);
}
finally
{
ProtoReader.Recycle(protoReader);
extensionObject.EndQuery(stream);
}
}
Label0:
yield break;
}
/// <summary>
/// All this does is call GetExtendedValuesTyped with the correct type for "instance";
/// this ensures that we don't get issues with subclasses declaring conflicting types -
/// the caller must respect the fields defined for the type they pass in.
/// </summary>
internal static IEnumerable GetExtendedValues(TypeModel model, Type type, IExtensible instance, int tag, DataFormat format, bool singleton, bool allowDefinedTag)
{
if (instance == null)
{
throw new ArgumentNullException(nameof(instance));
}
if (tag <= 0)
{
throw new ArgumentOutOfRangeException(nameof(tag));
}
IExtension extn = instance.GetExtensionObject(false);
if (extn == null)
{
yield break;
}
Stream stream = extn.BeginQuery();
object value = null;
ProtoReader reader = null;
try
{
SerializationContext ctx = new SerializationContext();
reader = ProtoReader.Create(stream, model, ctx, ProtoReader.TO_EOF);
while (model.TryDeserializeAuxiliaryType(reader, format, tag, type, ref value, true, false, false, false, null) && value != null)
{
if (!singleton)
{
yield return(value);
value = null; // fresh item each time
}
}
if (singleton && value != null)
{
yield return(value);
}
}
finally
{
ProtoReader.Recycle(reader);
extn.EndQuery(stream);
}
}
public static byte[] ToBytes(this IExtensible msg, int msgid)
{
int length = sizeof(short) + 2 + msg.GetExtensionObject(true).GetLength();
var buffer = PooledByteBufferAllocator.Default.Buffer(length + sizeof(int)).WithOrder(ByteOrder.LittleEndian);
buffer.WriteInt(length);
buffer.WriteShort(msgid);
MemoryStream stream = new MemoryStream(buffer.Array, buffer.WriterIndex + buffer.ArrayOffset, msg.GetExtensionObject(true).GetLength());
Serializer.NonGeneric.Serialize(stream, msg);
stream.Flush();
buffer.SetWriterIndex(sizeof(int) + length);
var ret = buffer.ReadBytes(buffer.ReadableBytes).ToArray();
buffer.Release();
return(ret);
}
internal static IEnumerable GetExtendedValues(TypeModel model, Type type, IExtensible instance, int tag, DataFormat format, bool singleton, bool allowDefinedTag)
{
if (instance == null)
{
throw new ArgumentNullException("instance");
}
if (tag <= 0)
{
throw new ArgumentOutOfRangeException("tag");
}
IExtension extn = instance.GetExtensionObject(createIfMissing: false);
if (extn != null)
{
Stream stream = extn.BeginQuery();
object value = null;
ProtoReader reader = null;
try
{
SerializationContext context = new SerializationContext();
reader = ProtoReader.Create(stream, model, context, -1);
while (model.TryDeserializeAuxiliaryType(reader, format, tag, type, ref value, skipOtherFields: true, asListItem: false, autoCreate: false, insideList: false) && value != null)
{
if (!singleton)
{
yield return(value);
value = null;
}
}
if (singleton && value != null)
{
yield return(value);
}
}
finally
{
ProtoReader.Recycle(reader);
extn.EndQuery(stream);
}
}
}
internal static void AppendExtendValue(TypeModel model, IExtensible instance, int tag, DataFormat format, object value)
{
model ??= TypeModel.DefaultModel;
if (instance is null) ThrowHelper.ThrowArgumentNullException(nameof(instance));
if (value is null) ThrowHelper.ThrowArgumentNullException(nameof(value));
// TODO
//model.CheckTagNotInUse(tag);
// obtain the extension object and prepare to write
IExtension extn = instance.GetExtensionObject(true);
if (extn is null) ThrowHelper.ThrowInvalidOperationException("No extension object available; appended data would be lost.");
bool commit = false;
Stream stream = extn.BeginAppend();
try
{
var state = ProtoWriter.State.Create(stream, model, null);
try
{
model.TrySerializeAuxiliaryType(ref state, null, format, tag, value, false, null, isRoot: false);
state.Close();
}
catch
{
state.Abandon();
throw;
}
finally
{
state.Dispose();
}
commit = true;
}
finally
{
extn.EndAppend(stream, commit);
}
}
static byte[] GetExtensionBytes(IExtensible obj)
{
Assert.IsNotNull(obj, "null extensible");
IExtension extn = obj.GetExtensionObject(false);
Assert.IsNotNull(extn, "no extension object");
Stream s = extn.BeginQuery();
try
{
using (MemoryStream ms = new MemoryStream()) {
int b; // really lazy clone...
while ((b = s.ReadByte()) >= 0)
{
ms.WriteByte((byte)b);
}
return(ms.ToArray());
}
} finally {
extn.EndQuery(s);
}
}
/// <summary>
/// Copies the current field into the instance as extension data
/// </summary>
public void AppendExtensionData(IExtensible instance)
{
if (instance == null)
{
throw new ArgumentNullException("instance");
}
IExtension extn = instance.GetExtensionObject(true);
bool commit = false;
// unusually we *don't* want "using" here; the "finally" does that, with
// the extension object being responsible for disposal etc
Stream dest = extn.BeginAppend();
try
{
//TODO: replace this with stream-based, buffered raw copying
using (ProtoWriter writer = new ProtoWriter(dest, model))
{
AppendExtensionField(writer);
writer.Close();
}
commit = true;
}
finally { extn.EndAppend(dest, commit); }
}
public void AppendExtensionData(IExtensible instance)
{
if (instance == null)
{
throw new ArgumentNullException("instance");
}
IExtension extensionObject = instance.GetExtensionObject(true);
bool commit = false;
Stream stream = extensionObject.BeginAppend();
try
{
using (ProtoWriter protoWriter = new ProtoWriter(stream, this.model, null))
{
this.AppendExtensionField(protoWriter);
protoWriter.Close();
}
commit = true;
}
finally
{
extensionObject.EndAppend(stream, commit);
}
}
/// <summary>
/// Copies any extension data stored for the instance to the underlying stream
/// </summary>
public static void AppendExtensionData(IExtensible instance, ProtoWriter writer, ref State state)
{
if (instance == null)
{
throw new ArgumentNullException(nameof(instance));
}
if (writer == null)
{
throw new ArgumentNullException(nameof(writer));
}
// we expect the writer to be raw here; the extension data will have the
// header detail, so we'll copy it implicitly
if (writer.WireType != WireType.None)
{
throw CreateException(writer);
}
IExtension extn = instance.GetExtensionObject(false);
if (extn != null)
{
// unusually we *don't* want "using" here; the "finally" does that, with
// the extension object being responsible for disposal etc
Stream source = extn.BeginQuery();
try
{
if (ProtoReader.TryConsumeSegmentRespectingPosition(source, out var data, ProtoReader.TO_EOF))
{
writer.ImplWriteBytes(ref state, data.Array, data.Offset, data.Count);
writer.Advance(data.Count);
}
else
{
writer.ImplCopyRawFromStream(ref state, source);
}
}
/// <summary>
/// Copies the current field into the instance as extension data
/// </summary>
public void AppendExtensionData(IExtensible instance)
{
if (instance == null) throw new ArgumentNullException("instance");
IExtension extn = instance.GetExtensionObject(true);
bool commit = false;
// unusually we *don't* want "using" here; the "finally" does that, with
// the extension object being responsible for disposal etc
Stream dest = extn.BeginAppend();
try
{
//TODO: replace this with stream-based, buffered raw copying
using (ProtoWriter writer = new ProtoWriter(dest, model))
{
AppendExtensionField(writer);
writer.Close();
}
commit = true;
}
finally { extn.EndAppend(dest, commit); }
}
internal static void Deserialize <TCreation>(ref T instance, SerializationContext context)
where TCreation : class, T
{
uint prefix = 0;
if (context == null)
{
throw new ArgumentNullException("context");
}
#if !CF
try
{
#endif
if (instance != null)
{
Callback(CallbackType.BeforeDeserialization, instance);
}
context.Push();
int propCount = readProps.Length;
//context.CheckSpace();
IExtensible extensible = instance as IExtensible;
IExtension extn = null;
Property <T> prop = propCount == 0 ? null : readProps[0];
int lastIndex = prop == null ? -1 : 0;
uint lastPrefix = prop == null ? uint.MaxValue : prop.FieldPrefix;
while (context.TryReadFieldPrefix(out prefix))
{
// scan for the correct property
bool foundTag = false;
if (prefix == lastPrefix)
{
foundTag = true;
}
else if (prefix > lastPrefix)
{
for (int i = lastIndex + 1; i < propCount; i++)
{
if (readProps[i].FieldPrefix == prefix)
{
prop = readProps[i];
lastIndex = i;
lastPrefix = prefix;
foundTag = true;
break;
}
if (readProps[i].FieldPrefix > prefix)
{
break; // too far
}
}
}
else
{
for (int i = lastIndex - 1; i >= 0; i--)
{
if (readProps[i].FieldPrefix == prefix)
{
prop = readProps[i];
lastIndex = i;
lastPrefix = prefix;
foundTag = true;
break;
}
if (readProps[i].FieldPrefix < prefix)
{
break; // too far
}
}
}
if (!foundTag)
{
// check for subclass creation
foreach (KeyValuePair <Type, Property <T, T> > subclass in subclasses)
{
// deserialize the nested data
if (prefix == subclass.Value.FieldPrefix)
{
foundTag = true;
instance = subclass.Value.DeserializeImpl(instance, context);
break;
}
}
if (foundTag)
{
continue; // nothing more to do for this...
}
}
// not a sub-class, but *some* data there, so create an object
if (instance == null)
{
instance = ObjectFactory <TCreation> .Create();
Callback(CallbackType.ObjectCreation, instance);
extensible = instance as IExtensible;
}
if (foundTag)
{
// found it by seeking; deserialize and continue
// ReSharper disable PossibleNullReferenceException
try
{
prop.Deserialize(instance, context);
}
catch (UnexpectedDataException ex)
{
if (extensible != null)
{
if (extn == null)
{
extn = extensible.GetExtensionObject(true);
}
ex.Serialize(extn);
}
// DON'T re-throw; we've handled this
}
// ReSharper restore PossibleNullReferenceException
continue;
}
WireType wireType;
int fieldTag;
Serializer.ParseFieldToken(prefix, out wireType, out fieldTag);
if (wireType == WireType.EndGroup)
{
context.EndGroup(fieldTag);
break; // this ends the entity, so stop the loop
}
// so we couldn't find it...
if (extensible != null)
{
if (extn == null)
{
extn = extensible.GetExtensionObject(true);
}
Stream extraStream = extn.BeginAppend();
try {
SerializationContext extraData = new SerializationContext(extraStream, null);
// copy the data into the output stream
// ReSharper disable PossibleNullReferenceException
extraData.EncodeUInt32(prefix);
// ReSharper restore PossibleNullReferenceException
ProcessExtraData(context, fieldTag, wireType, extraData);
extraData.Flush();
extn.EndAppend(extraStream, true);
} catch {
extn.EndAppend(extraStream, false);
throw;
}
}
else
{
// unexpected fields for an inextensible object; discard the data
Serializer.SkipData(context, fieldTag, wireType);
}
}
// final chance to create an instance - this only gets invoked for empty
// messages (otherwise instance should already be non-null)
if (instance == null)
{
instance = ObjectFactory <T> .Create();
Callback(CallbackType.ObjectCreation, instance);
}
context.Pop();
Callback(CallbackType.AfterDeserialization, instance);
#if !CF
}
catch (Exception ex)
{
const string ErrorDataKey = "protoSource";
if (!ex.Data.Contains(ErrorDataKey))
{
ex.Data.Add(ErrorDataKey, string.Format("tag={0}; wire-type={1}; offset={2}; depth={3}; type={4}",
(int)(prefix >> 3), (WireType)(prefix & 7),
context.Position, context.Depth, typeof(T).FullName));
}
throw;
}
#endif
}
/// <summary>
/// All this does is call GetExtendedValuesTyped with the correct type for "instance";
/// this ensures that we don't get issues with subclasses declaring conflicting types -
/// the caller must respect the fields defined for the type they pass in.
/// </summary>
internal static IEnumerable GetExtendedValues(TypeModel model, Type type, IExtensible instance, int tag, DataFormat format, bool singleton, bool allowDefinedTag)
{
#if FEAT_IKVM
throw new NotSupportedException();
#else
if (instance == null)
{
throw new ArgumentNullException("instance");
}
if (tag <= 0)
{
throw new ArgumentOutOfRangeException("tag");
}
IExtension extn = instance.GetExtensionObject(false);
if (extn == null)
{
#if FX11
return(new object[0]);
#else
yield break;
#endif
}
#if FX11
BasicList result = new BasicList();
#endif
Stream stream = extn.BeginQuery();
object value = null;
ProtoReader reader = null;
try {
SerializationContext ctx = new SerializationContext();
reader = ProtoReader.Create(stream, model, ctx, ProtoReader.TO_EOF);
while (model.TryDeserializeAuxiliaryType(reader, format, tag, type, ref value, true, false, false, false) && value != null)
{
if (!singleton)
{
#if FX11
result.Add(value);
#else
yield return(value);
#endif
value = null; // fresh item each time
}
}
if (singleton && value != null)
{
#if FX11
result.Add(value);
#else
yield return(value);
#endif
}
#if FX11
object[] resultArr = new object[result.Count];
result.CopyTo(resultArr, 0);
return(resultArr);
#endif
} finally {
ProtoReader.Recycle(reader);
extn.EndQuery(stream);
}
#endif
}
public void AppendExtensionData(IExtensible instance)
{
if (instance == null)
{
throw new ArgumentNullException("instance");
}
IExtension extensionObject = instance.GetExtensionObject(true);
bool commit = false;
Stream stream = extensionObject.BeginAppend();
try
{
using (ProtoWriter protoWriter = new ProtoWriter(stream, this.model, null))
{
this.AppendExtensionField(protoWriter);
protoWriter.Close();
}
commit = true;
}
finally
{
extensionObject.EndAppend(stream, commit);
}
}
/// <summary>
/// Copies any extension data stored for the instance to the underlying stream
/// </summary>
public static void AppendExtensionData(IExtensible instance, ProtoWriter writer)
{
if (instance == null) throw new ArgumentNullException("instance");
// we expect the writer to be raw here; the extension data will have the
// header detail, so we'll copy it implicitly
if(writer.wireType != WireType.None) throw CreateException(writer);
IExtension extn = instance.GetExtensionObject(false);
if (extn != null)
{
// unusually we *don't* want "using" here; the "finally" does that, with
// the extension object being responsible for disposal etc
Stream source = extn.BeginQuery();
try
{
CopyRawFromStream(source, writer);
}
finally { extn.EndQuery(source); }
}
}
public static void AppendExtensionData(IExtensible instance, ProtoWriter writer)
{
if (instance == null)
{
throw new ArgumentNullException("instance");
}
if (writer == null)
{
throw new ArgumentNullException("writer");
}
if (writer.wireType != WireType.None)
{
throw ProtoWriter.CreateException(writer);
}
IExtension extensionObject = instance.GetExtensionObject(false);
if (extensionObject != null)
{
Stream stream = extensionObject.BeginQuery();
try
{
ProtoWriter.CopyRawFromStream(stream, writer);
}
finally
{
extensionObject.EndQuery(stream);
}
}
}