private bool?TryReadSourceFileChecksumFromPdb(string sourceFilePath, Project project, out ImmutableArray <byte> checksum, out SourceHashAlgorithm algorithm)
{
checksum = default;
algorithm = default;
try
{
var compilationOutputs = _debuggingSession.GetCompilationOutputs(project);
DebugInformationReaderProvider?debugInfoReaderProvider;
try
{
debugInfoReaderProvider = compilationOutputs.OpenPdb();
}
catch (Exception e)
{
EditAndContinueWorkspaceService.Log.Write("Source '{0}' doesn't match output PDB: error opening PDB '{1}': {2}", sourceFilePath, compilationOutputs.PdbDisplayPath, e.Message);
debugInfoReaderProvider = null;
}
if (debugInfoReaderProvider == null)
{
EditAndContinueWorkspaceService.Log.Write("Source '{0}' doesn't match output PDB: PDB '{1}' not found", sourceFilePath, compilationOutputs.PdbDisplayPath);
return(null);
}
try
{
var debugInfoReader = debugInfoReaderProvider.CreateEditAndContinueMethodDebugInfoReader();
if (!debugInfoReader.TryGetDocumentChecksum(sourceFilePath, out checksum, out var algorithmId))
{
EditAndContinueWorkspaceService.Log.Write("Source '{0}' doesn't match output PDB: no document", sourceFilePath);
return(false);
}
algorithm = SourceHashAlgorithms.GetSourceHashAlgorithm(algorithmId);
if (algorithm == SourceHashAlgorithm.None)
{
// This can only happen if the PDB was post-processed by a misbehaving tool.
EditAndContinueWorkspaceService.Log.Write("Source '{0}' doesn't match PDB: unknown checksum alg", sourceFilePath);
}
return(true);
}
catch (Exception e)
{
EditAndContinueWorkspaceService.Log.Write("Source '{0}' doesn't match output PDB: error reading symbols: {1}", sourceFilePath, e.Message);
}
finally
{
debugInfoReaderProvider.Dispose();
}
}
catch (Exception e) when(FatalError.ReportWithoutCrashUnlessCanceled(e))
{
EditAndContinueWorkspaceService.Log.Write("Source '{0}' doesn't match PDB: unexpected exception: {1}", sourceFilePath, e.Message);
}
return(null);
}
public ImmutableArray <SourceDocument> FindSourceDocuments(ISymbol symbol)
{
var documentHandles = SymbolSourceDocumentFinder.FindDocumentHandles(symbol, _dllReader, _pdbReader);
using var _ = ArrayBuilder <SourceDocument> .GetInstance(out var sourceDocuments);
foreach (var handle in documentHandles)
{
var document = _pdbReader.GetDocument(handle);
var filePath = _pdbReader.GetString(document.Name);
var hashAlgorithmGuid = _pdbReader.GetGuid(document.HashAlgorithm);
var hashAlgorithm = SourceHashAlgorithms.GetSourceHashAlgorithm(hashAlgorithmGuid);
var checksum = _pdbReader.GetBlobContent(document.Hash);
var embeddedText = TryGetEmbeddedSourceText(handle);
sourceDocuments.Add(new SourceDocument(filePath, hashAlgorithm, checksum, embeddedText));
}
return(sourceDocuments.ToImmutable());
}