internal static ImmutableArray <SymUnmanagedSequencePoint> GetSequencePoints(this ISymUnmanagedMethod method)
{
// NB: method.GetSequencePoints(0, out numAvailable, ...) always returns 0.
int numAvailable;
int hr = method.GetSequencePointCount(out numAvailable);
SymUnmanagedReaderExtensions.ThrowExceptionForHR(hr);
if (numAvailable == 0)
{
return(ImmutableArray <SymUnmanagedSequencePoint> .Empty);
}
int[] offsets = new int[numAvailable];
ISymUnmanagedDocument[] documents = new ISymUnmanagedDocument[numAvailable];
int[] startLines = new int[numAvailable];
int[] startColumns = new int[numAvailable];
int[] endLines = new int[numAvailable];
int[] endColumns = new int[numAvailable];
int numRead;
hr = method.GetSequencePoints(numAvailable, out numRead, offsets, documents, startLines, startColumns, endLines, endColumns);
SymUnmanagedReaderExtensions.ThrowExceptionForHR(hr);
if (numRead != numAvailable)
{
throw new InvalidOperationException($"Read only {numRead} of {numAvailable} sequence points.");
}
var builder = ArrayBuilder <SymUnmanagedSequencePoint> .GetInstance(numRead);
for (int i = 0; i < numRead; i++)
{
builder.Add(new SymUnmanagedSequencePoint(
offsets[i],
documents[i],
startLines[i],
startColumns[i],
endLines[i],
endColumns[i]));
}
return(builder.ToImmutableAndFree());
}
public static ISymUnmanagedReader CreateReader(Stream pdbStream, object metadataImporter)
{
pdbStream.Position = 0;
bool isPortable = pdbStream.ReadByte() == 'B' && pdbStream.ReadByte() == 'S' && pdbStream.ReadByte() == 'J' && pdbStream.ReadByte() == 'B';
pdbStream.Position = 0;
if (isPortable)
{
return(new PortablePdb.SymReader(new PortablePdb.PortablePdbReader(pdbStream, metadataImporter)));
}
else
{
// NOTE: The product uses a different GUID (Microsoft.CodeAnalysis.ExpressionEvaluator.DkmUtilities.s_symUnmanagedReaderClassId).
Guid corSymReaderSxS = new Guid("0A3976C5-4529-4ef8-B0B0-42EED37082CD");
var reader = (ISymUnmanagedReader)Activator.CreateInstance(Type.GetTypeFromCLSID(corSymReaderSxS));
int hr = reader.Initialize(metadataImporter, null, null, new ComStreamWrapper(pdbStream));
SymUnmanagedReaderExtensions.ThrowExceptionForHR(hr);
return(reader);
}
}
