public CustomMetadataWriter(SymWriter sym_writer)
{
this.sym_writer = sym_writer;
this.stream = new MemoryStream();
this.writer = new BinaryStreamWriter(stream);
writer.WriteByte(version);
writer.WriteByte(0); // count
writer.Align(4);
}
void Write(CustomMetadataType type, Action write)
{
count++;
writer.WriteByte(version);
writer.WriteByte((byte)type);
writer.Align(4);
var length_position = writer.Position;
writer.WriteUInt32(0);
write();
writer.Align(4);
var end = writer.Position;
var length = end - length_position + 4; // header is 4 bytes long
writer.Position = length_position;
writer.WriteInt32(length);
writer.Position = end;
}
private void DefineCustomMetadata(PdbMethodSymbols pdbSymbols)
{
// Custom PDB metadata
if (pdbSymbols != null)
{
using (var memoryStream = new MemoryStream()) {
var metadata = new BinaryStreamWriter(memoryStream);
metadata.WriteByte(4); // version
metadata.WriteByte((byte)1); // count
metadata.WriteInt16(0); // padding
var metadataStartPosition = metadata.BaseStream.Position;
var customMetadataCount = 0;
if (pdbSymbols.IteratorClass != null)
{
customMetadataCount++;
metadata.WriteByte(4); // version
metadata.WriteByte(4); // forward iterator
metadata.Align(4);
using (new PdbBinaryStreamWriterSizeHelper(metadata)) {
metadata.WriteString(pdbSymbols.IteratorClass);
metadata.WriteInt16(0);
metadata.Align(4);
}
}
if (pdbSymbols.UsingCounts != null)
{
customMetadataCount++;
metadata.WriteByte(4); // version
metadata.WriteByte(0); // using info
metadata.Align(4);
using (new PdbBinaryStreamWriterSizeHelper(metadata)) {
metadata.WriteUInt16((ushort)pdbSymbols.UsingCounts.Count);
foreach (var uc in pdbSymbols.UsingCounts)
{
metadata.WriteUInt16(uc);
}
metadata.Align(4);
}
}
if (pdbSymbols.MethodWhoseUsingInfoAppliesToThisMethod != null)
{
customMetadataCount++;
metadata.WriteByte(4); // version
metadata.WriteByte(1); // forward info
metadata.Align(4);
using (new PdbBinaryStreamWriterSizeHelper(metadata)) {
metadata.WriteUInt32(pdbSymbols.MethodWhoseUsingInfoAppliesToThisMethod.MetadataToken.ToUInt32());
}
}
if (pdbSymbols.IteratorScopes != null)
{
customMetadataCount++;
metadata.WriteByte(4); // version
metadata.WriteByte(3); // iterator scopes
metadata.Align(4);
using (new PdbBinaryStreamWriterSizeHelper(metadata)) {
metadata.WriteInt32(pdbSymbols.IteratorScopes.Count);
foreach (var scope in pdbSymbols.IteratorScopes)
{
metadata.WriteInt32(scope.Start.Offset);
metadata.WriteInt32(scope.End.Offset);
}
}
}
if (metadata.BaseStream.Position != metadataStartPosition)
{
// Update number of entries
metadata.Flush();
metadata.BaseStream.Position = 1;
metadata.WriteByte((byte)customMetadataCount);
metadata.Flush();
writer.DefineCustomMetadata("MD2", memoryStream.ToArray());
}
}
// Save back asyncMethodInfo
if (pdbSymbols.SynchronizationInformation != null)
{
using (var memoryStream = new MemoryStream()) {
var metadata = new BinaryStreamWriter(memoryStream);
metadata.WriteUInt32(pdbSymbols.SynchronizationInformation.KickoffMethod != null ? pdbSymbols.SynchronizationInformation.KickoffMethod.MetadataToken.ToUInt32() : 0);
metadata.WriteUInt32(pdbSymbols.SynchronizationInformation.GeneratedCatchHandlerIlOffset);
metadata.WriteUInt32((uint)pdbSymbols.SynchronizationInformation.SynchronizationPoints.Count);
foreach (var syncPoint in pdbSymbols.SynchronizationInformation.SynchronizationPoints)
{
metadata.WriteUInt32(syncPoint.SynchronizeOffset);
metadata.WriteUInt32(syncPoint.ContinuationMethod != null ? syncPoint.ContinuationMethod.MetadataToken.ToUInt32() : 0);
metadata.WriteUInt32(syncPoint.ContinuationOffset);
}
writer.DefineCustomMetadata("asyncMethodInfo", memoryStream.ToArray());
}
}
}
}
/// <summary>
/// Serialises the blob stream buffer to a metadata stream.
/// </summary>
/// <returns>The metadata stream.</returns>
public BlobStream CreateStream()
{
_writer.Align(4);
return(new SerializedBlobStream(Name, _rawStream.ToArray()));
}
/// <summary>
/// Serializes
/// </summary>
/// <returns></returns>
public UserStringsStream CreateStream()
{
_writer.Align(4);
return(new SerializedUserStringsStream(Name, _rawStream.ToArray()));
}
