private unsafe void WriteEditAndContinueLambdaMap(CustomDebugInfoRecord record)
{
Debug.Assert(record.Kind == CustomDebugInfoKind.EditAndContinueLambdaMap);
_writer.WriteStartElement("encLambdaMap");
try
{
if (record.Data.Length == 0)
{
return;
}
int methodOrdinal = -1;
int syntaxOffsetBaseline = -1;
int closureCount;
fixed (byte* blobPtr = &record.Data.ToArray()[0])
{
var blobReader = new BlobReader(blobPtr, record.Data.Length);
if (!blobReader.TryReadCompressedInteger(out methodOrdinal))
{
_writer.WriteElementString("methodOrdinal", "?");
_writer.WriteEndElement();
return;
}
// [-1, inf)
methodOrdinal--;
_writer.WriteElementString("methodOrdinal", CultureInvariantToString(methodOrdinal));
if (!blobReader.TryReadCompressedInteger(out syntaxOffsetBaseline))
{
_writer.WriteElementString("baseline", "?");
_writer.WriteEndElement();
return;
}
syntaxOffsetBaseline = -syntaxOffsetBaseline;
if (!blobReader.TryReadCompressedInteger(out closureCount))
{
_writer.WriteElementString("closureCount", "?");
_writer.WriteEndElement();
return;
}
for (int i = 0; i < closureCount; i++)
{
_writer.WriteStartElement("closure");
try
{
int syntaxOffset;
if (!blobReader.TryReadCompressedInteger(out syntaxOffset))
{
_writer.WriteElementString("offset", "?");
break;
}
_writer.WriteAttributeString("offset", CultureInvariantToString(syntaxOffset + syntaxOffsetBaseline));
}
finally
{
_writer.WriteEndElement();
}
}
while (blobReader.RemainingBytes > 0)
{
_writer.WriteStartElement("lambda");
try
{
int syntaxOffset;
if (!blobReader.TryReadCompressedInteger(out syntaxOffset))
{
_writer.WriteElementString("offset", "?");
return;
}
_writer.WriteAttributeString("offset", CultureInvariantToString(syntaxOffset + syntaxOffsetBaseline));
int closureOrdinal;
if (!blobReader.TryReadCompressedInteger(out closureOrdinal))
{
_writer.WriteElementString("closure", "?");
return;
}
closureOrdinal -= 2;
if (closureOrdinal == -2)
{
_writer.WriteAttributeString("closure", "this");
}
else if (closureOrdinal != -1)
{
_writer.WriteAttributeString("closure",
CultureInvariantToString(closureOrdinal) + (closureOrdinal >= closureCount ? " (invalid)" : ""));
}
}
finally
{
_writer.WriteEndElement();
}
}
}
}
finally
{
_writer.WriteEndElement(); //encLocalSlotMap
}
}
/// <summary>
/// Contains a list of buckets, each of which contains a number of flags, a slot ID, and a name.
/// TODO: comment when the structure is understood.
/// </summary>
/// <remarks>
/// Appears when there are dynamic locals.
/// </remarks>
private void WriteDynamicLocalsCustomDebugInfo(CustomDebugInfoRecord record)
{
Debug.Assert(record.Kind == CustomDebugInfoKind.DynamicLocals);
_writer.WriteStartElement("dynamicLocals");
var buckets = CDI.DecodeDynamicLocalsRecord(record.Data);
foreach (DynamicLocalBucket bucket in buckets)
{
ulong flags = bucket.Flags;
int flagCount = bucket.FlagCount;
PooledStringBuilder pooled = PooledStringBuilder.GetInstance();
StringBuilder flagsBuilder = pooled.Builder;
for (int f = 0; f < flagCount; f++)
{
flagsBuilder.Append((flags >> f) & 1UL);
}
_writer.WriteStartElement("bucket");
_writer.WriteAttributeString("flagCount", CultureInvariantToString(flagCount));
_writer.WriteAttributeString("flags", pooled.ToStringAndFree());
_writer.WriteAttributeString("slotId", CultureInvariantToString(bucket.SlotId));
_writer.WriteAttributeString("localName", bucket.Name);
_writer.WriteEndElement(); //bucket
}
_writer.WriteEndElement(); //dynamicLocals
}
private unsafe void WriteEditAndContinueLocalSlotMap(CustomDebugInfoRecord record)
{
Debug.Assert(record.Kind == CustomDebugInfoKind.EditAndContinueLocalSlotMap);
_writer.WriteStartElement("encLocalSlotMap");
try
{
int syntaxOffsetBaseline = -1;
fixed (byte* compressedSlotMapPtr = &record.Data.ToArray()[0])
{
var blobReader = new BlobReader(compressedSlotMapPtr, record.Data.Length);
while (blobReader.RemainingBytes > 0)
{
byte b = blobReader.ReadByte();
if (b == 0xff)
{
if (!blobReader.TryReadCompressedInteger(out syntaxOffsetBaseline))
{
_writer.WriteElementString("baseline", "?");
return;
}
syntaxOffsetBaseline = -syntaxOffsetBaseline;
continue;
}
_writer.WriteStartElement("slot");
if (b == 0)
{
// short-lived temp, no info
_writer.WriteAttributeString("kind", "temp");
}
else
{
int synthesizedKind = (b & 0x3f) - 1;
bool hasOrdinal = (b & (1 << 7)) != 0;
int syntaxOffset;
bool badSyntaxOffset = !blobReader.TryReadCompressedInteger(out syntaxOffset);
syntaxOffset += syntaxOffsetBaseline;
int ordinal = 0;
bool badOrdinal = hasOrdinal && !blobReader.TryReadCompressedInteger(out ordinal);
_writer.WriteAttributeString("kind", CultureInvariantToString(synthesizedKind));
_writer.WriteAttributeString("offset", badSyntaxOffset ? "?" : CultureInvariantToString(syntaxOffset));
if (badOrdinal || hasOrdinal)
{
_writer.WriteAttributeString("ordinal", badOrdinal ? "?" : CultureInvariantToString(ordinal));
}
}
_writer.WriteEndElement();
}
}
}
finally
{
_writer.WriteEndElement(); //encLocalSlotMap
}
}
/// <summary>
/// Contains a name string.
/// TODO: comment when the structure is understood.
/// </summary>
/// <remarks>
/// Appears when are iterator methods.
/// </remarks>
private void WriteForwardIteratorCustomDebugInfo(CustomDebugInfoRecord record)
{
Debug.Assert(record.Kind == CustomDebugInfoKind.ForwardIterator);
_writer.WriteStartElement("forwardIterator");
string name = CDI.DecodeForwardIteratorRecord(record.Data);
_writer.WriteAttributeString("name", name);
_writer.WriteEndElement(); //forwardIterator
}
/// <summary>
/// Appears when iterator locals have to lifted into fields. Contains a list of buckets with
/// start and end offsets (presumably, into IL).
/// TODO: comment when the structure is understood.
/// </summary>
/// <remarks>
/// Appears when there are locals in iterator methods.
/// </remarks>
private void WriteStatemachineHoistedLocalScopesCustomDebugInfo(CustomDebugInfoRecord record)
{
Debug.Assert(record.Kind == CustomDebugInfoKind.StateMachineHoistedLocalScopes);
_writer.WriteStartElement("hoistedLocalScopes");
var scopes = CDI.DecodeStateMachineHoistedLocalScopesRecord(record.Data);
foreach (StateMachineHoistedLocalScope scope in scopes)
{
_writer.WriteStartElement("slot");
_writer.WriteAttributeString("startOffset", AsILOffset(scope.StartOffset));
_writer.WriteAttributeString("endOffset", AsILOffset(scope.EndOffset));
_writer.WriteEndElement(); //bucket
}
_writer.WriteEndElement();
}
/// <summary>
/// This indicates that further information can be obtained by looking at the custom debug
/// info of another method (specified by token).
/// </summary>
/// <remarks>
/// Appears when there are extern aliases and edit-and-continue is disabled.
/// Emitting tokens makes tests more fragile.
/// </remarks>
private void WriteForwardToModuleCustomDebugInfo(CustomDebugInfoRecord record)
{
Debug.Assert(record.Kind == CustomDebugInfoKind.ForwardToModuleInfo);
_writer.WriteStartElement("forwardToModule");
int token = CDI.DecodeForwardRecord(record.Data);
WriteMethodAttributes(token, isReference: true);
_writer.WriteEndElement(); //forwardToModule
}
/// <summary>
/// For each namespace declaration enclosing a method (innermost-to-outermost), there is a count
/// of the number of imports in that declaration.
/// </summary>
/// <remarks>
/// There's always at least one entry (for the global namespace).
/// </remarks>
private void WriteUsingCustomDebugInfo(CustomDebugInfoRecord record)
{
Debug.Assert(record.Kind == CustomDebugInfoKind.UsingInfo);
_writer.WriteStartElement("using");
ImmutableArray<short> counts = CDI.DecodeUsingRecord(record.Data);
foreach (short importCount in counts)
{
_writer.WriteStartElement("namespace");
_writer.WriteAttributeString("usingCount", CultureInvariantToString(importCount));
_writer.WriteEndElement(); //namespace
}
_writer.WriteEndElement(); //using
}
/// <summary>
/// If the custom debug info is in a format that we don't understand, then we will
/// just print a standard record header followed by the rest of the record as a
/// single hex string.
/// </summary>
private void WriteUnknownCustomDebugInfo(CustomDebugInfoRecord record)
{
_writer.WriteStartElement("unknown");
_writer.WriteAttributeString("kind", record.Kind.ToString());
_writer.WriteAttributeString("version", CultureInvariantToString(record.Version));
PooledStringBuilder pooled = PooledStringBuilder.GetInstance();
StringBuilder builder = pooled.Builder;
foreach (byte b in record.Data)
{
builder.AppendFormat("{0:X2}", b);
}
_writer.WriteAttributeString("payload", pooled.ToStringAndFree());
_writer.WriteEndElement(); //unknown
}