public Compilation CreateCompilation(CompilationOptionsReader compilationOptionsReader, string fileName)
{
var pdbCompilationOptions = compilationOptionsReader.GetMetadataCompilationOptions();
if (pdbCompilationOptions.Length == 0)
{
throw new InvalidDataException("Did not find compilation options in pdb");
}
var metadataReferenceInfos = compilationOptionsReader.GetMetadataReferences();
var encoding = compilationOptionsReader.GetEncoding();
var sourceFileInfos = compilationOptionsReader.GetSourceFileInfos(encoding);
_logger.LogInformation("Locating metadata references");
var metadataReferences = _referenceResolver.ResolveReferences(metadataReferenceInfos);
logResolvedMetadataReferences();
var sourceLinks = ResolveSourceLinks(compilationOptionsReader);
var sources = ResolveSources(sourceFileInfos, sourceLinks, encoding);
logResolvedSources();
if (pdbCompilationOptions.TryGetUniqueOption("language", out var language))
{
var compilation = language switch
{
LanguageNames.CSharp => CreateCSharpCompilation(fileName, compilationOptionsReader, sources, metadataReferences),
LanguageNames.VisualBasic => CreateVisualBasicCompilation(fileName, compilationOptionsReader, sources, metadataReferences),
_ => throw new InvalidDataException($"{language} is not a known language")
};
return(compilation);
}
throw new InvalidDataException("Did not find language in compilation options");
void logResolvedMetadataReferences()
{
using var _ = _logger.BeginScope("Metadata References");
for (var i = 0; i < metadataReferenceInfos.Length; i++)
{
_logger.LogInformation($@"""{metadataReferences[i].Display}"" - {metadataReferenceInfos[i].Mvid}");
}
}
void logResolvedSources()
{
using var _ = _logger.BeginScope("Source Names");
foreach (var resolvedSource in sources)
{
var sourceFileInfo = resolvedSource.SourceFileInfo;
var hash = BitConverter.ToString(sourceFileInfo.Hash).Replace("-", "");
var embeddedCompressedHash = sourceFileInfo.EmbeddedCompressedHash is { } compressedHash
? ("[uncompressed]" + BitConverter.ToString(compressedHash).Replace("-", ""))
: null;
_logger.LogInformation($@"""{resolvedSource.DisplayPath}"" - {sourceFileInfo.HashAlgorithm} - {hash} - {embeddedCompressedHash}");
}
}
}
public (Compilation?compilation, bool isError) CreateCompilation(CompilationOptionsReader compilationOptionsReader, string fileName)
{
// We try to handle assemblies missing compilation options gracefully by skipping them.
// However, if an assembly has some bad combination of data, for example if it contains
// compilation options but not metadata references, then we throw an exception.
if (!compilationOptionsReader.TryGetMetadataCompilationOptions(out var pdbCompilationOptions) ||
pdbCompilationOptions.Length == 0)
{
_logger.LogInformation($"{fileName} did not contain compilation options in its PDB");
return(compilation : null, isError : false);
}
var metadataReferenceInfos = compilationOptionsReader.GetMetadataReferences();
var encoding = compilationOptionsReader.GetEncoding();
var sourceFileInfos = compilationOptionsReader.GetSourceFileInfos(encoding);
_logger.LogInformation("Locating metadata references");
if (!_referenceResolver.TryResolveReferences(metadataReferenceInfos, out var metadataReferences))
{
_logger.LogError($"Failed to rebuild {fileName} due to missing metadata references");
return(compilation : null, isError : true);
}
logResolvedMetadataReferences();
var sourceLinks = ResolveSourceLinks(compilationOptionsReader);
var sources = ResolveSources(sourceFileInfos, sourceLinks, encoding);
logResolvedSources();
if (pdbCompilationOptions.TryGetUniqueOption("language", out var language))
{
var diagnosticBag = DiagnosticBag.GetInstance();
var compilation = language switch
{
LanguageNames.CSharp => CreateCSharpCompilation(fileName, compilationOptionsReader, sources, metadataReferences),
LanguageNames.VisualBasic => CreateVisualBasicCompilation(fileName, compilationOptionsReader, sources, metadataReferences, diagnosticBag),
_ => throw new InvalidDataException($"{language} is not a known language")
};
var diagnostics = diagnosticBag.ToReadOnlyAndFree();
var hadError = false;
foreach (var diagnostic in diagnostics)
{
if (diagnostic.Severity == DiagnosticSeverity.Error)
{
_logger.LogError(diagnostic.ToString());
hadError = true;
}
else
{
_logger.LogWarning(diagnostic.ToString());
}
}
compilation = hadError ? null : compilation;
return(compilation, isError : compilation is null);
}
throw new InvalidDataException("Did not find language in compilation options");
void logResolvedMetadataReferences()
{
using var _ = _logger.BeginScope("Metadata References");
for (var i = 0; i < metadataReferenceInfos.Length; i++)
{
_logger.LogInformation($@"""{metadataReferences[i].Display}"" - {metadataReferenceInfos[i].Mvid}");
}
}
void logResolvedSources()
{
using var _ = _logger.BeginScope("Source Names");
foreach (var resolvedSource in sources)
{
var sourceFileInfo = resolvedSource.SourceFileInfo;
var hash = BitConverter.ToString(sourceFileInfo.Hash).Replace("-", "");
var embeddedCompressedHash = sourceFileInfo.EmbeddedCompressedHash is { } compressedHash
? ("[uncompressed]" + BitConverter.ToString(compressedHash).Replace("-", ""))
: null;
_logger.LogInformation($@"""{resolvedSource.DisplayPath}"" - {sourceFileInfo.HashAlgorithm} - {hash} - {embeddedCompressedHash}");
}
}
}