internal IMarshallingInformation GetMarshallingInformation(
MetadataObject metadataObject
) {
uint fieldMarshalRowId = this.PEFileReader.FieldMarshalTable.GetFieldMarshalRowId(metadataObject.TokenValue);
if (fieldMarshalRowId == 0)
return Dummy.MarshallingInformation;
FieldMarshalRow fieldMarshalRow = this.PEFileReader.FieldMarshalTable[fieldMarshalRowId];
MemoryBlock fieldMarshalMemoryBlock = this.PEFileReader.BlobStream.GetMemoryBlockAt(fieldMarshalRow.NativeType);
MemoryReader memoryReader = new MemoryReader(fieldMarshalMemoryBlock);
System.Runtime.InteropServices.UnmanagedType unmanagedType = (System.Runtime.InteropServices.UnmanagedType)memoryReader.ReadByte();
if (memoryReader.NotEndOfBytes) {
if (unmanagedType == System.Runtime.InteropServices.UnmanagedType.ByValArray) {
uint numElements = (uint)memoryReader.ReadCompressedUInt32();
System.Runtime.InteropServices.UnmanagedType elementType = System.Runtime.InteropServices.UnmanagedType.AsAny;
if (memoryReader.NotEndOfBytes)
elementType = (System.Runtime.InteropServices.UnmanagedType)memoryReader.ReadByte();
return new ByValArrayMarshallingInformation(elementType, numElements);
} else if (unmanagedType == System.Runtime.InteropServices.UnmanagedType.CustomMarshaler) {
string marshallerName;
string marshallerArgument;
memoryReader.ReadInt16(); // Deliberate Skip...
int byteLen = memoryReader.ReadCompressedUInt32();
if (byteLen == -1 || byteLen == 0)
marshallerName = string.Empty;
else
marshallerName = memoryReader.ReadUTF8WithSize(byteLen);
ITypeReference/*?*/ marshaller = this.GetSerializedTypeNameAsTypeReference(marshallerName);
if (marshaller == null) marshaller = Dummy.TypeReference;
byteLen = memoryReader.ReadCompressedUInt32();
if (byteLen == -1 || byteLen == 0)
marshallerArgument = string.Empty;
else
marshallerArgument = memoryReader.ReadUTF8WithSize(byteLen);
return new CustomMarshallingInformation(marshaller, marshallerArgument);
} else if (unmanagedType == System.Runtime.InteropServices.UnmanagedType.LPArray) {
System.Runtime.InteropServices.UnmanagedType elementType = (System.Runtime.InteropServices.UnmanagedType)memoryReader.ReadByte();
int paramIndex = -1;
uint flag = 0;
uint numElements = 0;
if (memoryReader.NotEndOfBytes)
paramIndex = (int)memoryReader.ReadCompressedUInt32();
if (memoryReader.NotEndOfBytes)
numElements = (uint)memoryReader.ReadCompressedUInt32();
if (memoryReader.NotEndOfBytes) {
flag = (uint)memoryReader.ReadCompressedUInt32();
if (flag == 0) {
//TODO: check that paramIndex is 0
paramIndex = -1; //paramIndex is just a place holder so that numElements can be present
}
}
return new LPArrayMarshallingInformation(elementType, paramIndex, numElements);
} else if (unmanagedType == System.Runtime.InteropServices.UnmanagedType.SafeArray) {
System.Runtime.InteropServices.VarEnum elementType = (System.Runtime.InteropServices.VarEnum)memoryReader.ReadByte();
string subType = string.Empty;
if (memoryReader.NotEndOfBytes) {
int byteLen = memoryReader.ReadCompressedUInt32();
if (byteLen > 0)
subType = memoryReader.ReadUTF8WithSize(byteLen);
}
ITypeReference/*?*/ subTypeRef = this.GetSerializedTypeNameAsTypeReference(subType);
if (subTypeRef == null) subTypeRef = Dummy.TypeReference;
return new SafeArrayMarshallingInformation(elementType, subTypeRef);
} else if (unmanagedType == System.Runtime.InteropServices.UnmanagedType.ByValTStr) {
uint numElements = (uint)memoryReader.ReadCompressedUInt32();
return new ByValTStrMarshallingInformation(numElements);
} else if (unmanagedType == System.Runtime.InteropServices.UnmanagedType.Interface) {
uint iidParameterIndex = (uint)memoryReader.ReadCompressedUInt32();
return new IidParameterIndexMarshallingInformation(iidParameterIndex);
} else {
//TODO: error blob should not have extra info unless one of the above types.
}
}
return new SimpleMarshallingInformation(unmanagedType);
}