private static ISymUnmanagedReader3 CreateNativeSymReader(Stream pdbStream)
{
object symReader = null;
var guid = default(Guid);
if (IntPtr.Size == 4)
{
CreateSymReader32(ref guid, out symReader);
}
else
{
CreateSymReader64(ref guid, out symReader);
}
var reader = (ISymUnmanagedReader3)symReader;
var hr = reader.Initialize(new DummyMetadataImport(), null, null, new ComStreamWrapper(pdbStream));
SymUnmanagedReaderExtensions.ThrowExceptionForHR(hr);
return(reader);
}
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 = ImmutableArray.CreateBuilder <SymUnmanagedSequencePoint>(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.ToImmutable());
}
