// Helper function to create a BamlRecord from a BamlRecordType
private BamlRecord AllocateRecord(BamlRecordType recordType)
{
BamlRecord record;
switch(recordType)
{
case BamlRecordType.DocumentStart:
record = new BamlDocumentStartRecord();
break;
case BamlRecordType.DocumentEnd:
record = new BamlDocumentEndRecord();
break;
case BamlRecordType.ConnectionId:
record = new BamlConnectionIdRecord();
break;
case BamlRecordType.ElementStart:
record = new BamlElementStartRecord();
break;
case BamlRecordType.ElementEnd:
record = new BamlElementEndRecord();
break;
case BamlRecordType.DeferableContentStart:
record = new BamlDeferableContentStartRecord();
break;
case BamlRecordType.DefAttributeKeyString:
record = new BamlDefAttributeKeyStringRecord();
break;
case BamlRecordType.DefAttributeKeyType:
record = new BamlDefAttributeKeyTypeRecord();
break;
case BamlRecordType.LiteralContent:
record = new BamlLiteralContentRecord();
break;
case BamlRecordType.Property:
record = new BamlPropertyRecord();
break;
case BamlRecordType.PropertyWithConverter:
record = new BamlPropertyWithConverterRecord();
break;
case BamlRecordType.PropertyStringReference:
record = new BamlPropertyStringReferenceRecord();
break;
case BamlRecordType.PropertyTypeReference:
record = new BamlPropertyTypeReferenceRecord();
break;
case BamlRecordType.PropertyWithExtension:
record = new BamlPropertyWithExtensionRecord();
break;
case BamlRecordType.PropertyCustom:
record = new BamlPropertyCustomRecord();
break;
case BamlRecordType.PropertyComplexStart:
record = new BamlPropertyComplexStartRecord();
break;
case BamlRecordType.PropertyComplexEnd:
record = new BamlPropertyComplexEndRecord();
break;
case BamlRecordType.RoutedEvent:
record = new BamlRoutedEventRecord();
break;
case BamlRecordType.PropertyArrayStart:
record = new BamlPropertyArrayStartRecord();
break;
case BamlRecordType.PropertyArrayEnd:
record = new BamlPropertyArrayEndRecord();
break;
case BamlRecordType.PropertyIListStart:
record = new BamlPropertyIListStartRecord();
break;
case BamlRecordType.PropertyIListEnd:
record = new BamlPropertyIListEndRecord();
break;
case BamlRecordType.PropertyIDictionaryStart:
record = new BamlPropertyIDictionaryStartRecord();
break;
case BamlRecordType.PropertyIDictionaryEnd:
record = new BamlPropertyIDictionaryEndRecord();
break;
case BamlRecordType.Text:
record = new BamlTextRecord();
break;
case BamlRecordType.TextWithConverter:
record = new BamlTextWithConverterRecord();
break;
case BamlRecordType.TextWithId:
record = new BamlTextWithIdRecord();
break;
case BamlRecordType.XmlnsProperty:
record = new BamlXmlnsPropertyRecord();
break;
case BamlRecordType.PIMapping:
record = new BamlPIMappingRecord();
break;
case BamlRecordType.DefAttribute:
record = new BamlDefAttributeRecord();
break;
case BamlRecordType.PresentationOptionsAttribute:
record = new BamlPresentationOptionsAttributeRecord();
break;
case BamlRecordType.KeyElementStart:
record = new BamlKeyElementStartRecord();
break;
case BamlRecordType.KeyElementEnd:
record = new BamlKeyElementEndRecord();
break;
case BamlRecordType.ConstructorParametersStart:
record = new BamlConstructorParametersStartRecord();
break;
case BamlRecordType.ConstructorParametersEnd:
record = new BamlConstructorParametersEndRecord();
break;
case BamlRecordType.ConstructorParameterType:
record = new BamlConstructorParameterTypeRecord();
break;
case BamlRecordType.ContentProperty:
record = new BamlContentPropertyRecord();
break;
case BamlRecordType.AssemblyInfo:
case BamlRecordType.TypeInfo:
case BamlRecordType.TypeSerializerInfo:
case BamlRecordType.AttributeInfo:
case BamlRecordType.StringInfo:
Debug.Assert(false,"Assembly, Type and Attribute records are not cached, so don't ask for one.");
record = null;
break;
case BamlRecordType.StaticResourceStart:
record = new BamlStaticResourceStartRecord();
break;
case BamlRecordType.StaticResourceEnd:
record = new BamlStaticResourceEndRecord();
break;
case BamlRecordType.StaticResourceId:
record = new BamlStaticResourceIdRecord();
break;
case BamlRecordType.LineNumberAndPosition:
record = new BamlLineAndPositionRecord();
break;
case BamlRecordType.LinePosition:
record = new BamlLinePositionRecord();
break;
case BamlRecordType.OptimizedStaticResource:
record = new BamlOptimizedStaticResourceRecord();
break;
case BamlRecordType.PropertyWithStaticResourceId:
record = new BamlPropertyWithStaticResourceIdRecord();
break;
default:
Debug.Assert(false,"Unknown RecordType");
record = null;
break;
}
return record;
}
// Genericaly load and create the proper class.
// This method assumes the seek pointer has already moved passed the recordType
// field and is at the RecordSize or record contents (depending on record).
// This method is used so the caller can first read the type of record, and expects
// to get back the entire record, or nothing (for async support).
internal BamlRecord ReadNextRecord(
BinaryReader bamlBinaryReader,
long bytesAvailable,
BamlRecordType recordType)
{
BamlRecord bamlRecord; // = null
// Create the proper BamlRecord based on the recordType. The assembly,
// type and attribute records are created every time, since they are
// used by the BamlMapTable. The other records are re-used, so they
// are created once and cached.
switch(recordType)
{
case BamlRecordType.AssemblyInfo:
bamlRecord = new BamlAssemblyInfoRecord();
break;
case BamlRecordType.TypeInfo:
bamlRecord = new BamlTypeInfoRecord();
break;
case BamlRecordType.TypeSerializerInfo:
bamlRecord = new BamlTypeInfoWithSerializerRecord();
break;
case BamlRecordType.AttributeInfo:
bamlRecord = new BamlAttributeInfoRecord();
break;
case BamlRecordType.StringInfo:
bamlRecord = new BamlStringInfoRecord();
break;
case BamlRecordType.DefAttributeKeyString:
bamlRecord = new BamlDefAttributeKeyStringRecord();
break;
case BamlRecordType.DefAttributeKeyType:
bamlRecord = new BamlDefAttributeKeyTypeRecord();
break;
case BamlRecordType.KeyElementStart:
bamlRecord = new BamlKeyElementStartRecord();
break;
default:
// Get the current record from the cache. If there's nothing there yet,
// or if what is there is pinned, then create one. Note that records in the
// read cache are implicitly recycled, and records in the write cache are explicitly
// recycled (i.e., there's a ReleaseWriteRecord, but no ReleaseReadRecord).
bamlRecord = _readCache[(int)recordType];
if (null == bamlRecord || bamlRecord.IsPinned )
{
bamlRecord = _readCache[(int)recordType] = AllocateRecord(recordType);
}
break;
}
bamlRecord.Next = null;
if (null != bamlRecord)
{
// If LoadRecordSize indicates it can determine the record size
// and has determined that there is enough content to load the
// entire record, then continue.
if (bamlRecord.LoadRecordSize(bamlBinaryReader, bytesAvailable) &&
bytesAvailable >= bamlRecord.RecordSize)
{
bamlRecord.LoadRecordData(bamlBinaryReader);
}
else
{
bamlRecord = null;
}
}
return bamlRecord;
}
