private static Eligibility GetInputFileEligibility(ITaskItem file, HashSet <string> exclusionSet)
{
// Check to see if this is a valid ILOnly image that we can compile
using (FileStream fs = new FileStream(file.ItemSpec, FileMode.Open, FileAccess.Read))
{
try
{
using (var pereader = new PEReader(fs))
{
if (!pereader.HasMetadata)
{
return(Eligibility.None);
}
MetadataReader mdReader = pereader.GetMetadataReader();
if (!mdReader.IsAssembly)
{
return(Eligibility.None);
}
if (IsReferenceAssembly(mdReader))
{
// crossgen can only take implementation assemblies, even as references
return(Eligibility.None);
}
if ((pereader.PEHeaders.CorHeader.Flags & CorFlags.ILOnly) != CorFlags.ILOnly)
{
return(Eligibility.ReferenceOnly);
}
if (file.HasMetadataValue(MetadataKeys.ReferenceOnly, "true"))
{
return(Eligibility.ReferenceOnly);
}
if (exclusionSet != null && exclusionSet.Contains(Path.GetFileName(file.ItemSpec)))
{
return(Eligibility.ReferenceOnly);
}
// save these most expensive checks for last. We don't want to scan all references for IL code
if (ReferencesWinMD(mdReader) || !HasILCode(pereader, mdReader))
{
return(Eligibility.ReferenceOnly);
}
return(Eligibility.CompileAndReference);
}
}
catch (BadImageFormatException)
{
// Not a valid assembly file
return(Eligibility.None);
}
}
}
private static bool IsNuGetReference(ITaskItem reference)
{
return(reference.HasMetadataValue("NuGetSourceType") &&
!reference.HasMetadataValue("NuGetIsFrameworkReference", "true"));
}
public static bool IsProjectReference(ITaskItem reference)
{
return(reference.HasMetadataValue(MetadataKeys.ReferenceSourceTarget, "ProjectReference"));
}
private static Eligibility GetInputFileEligibility(ITaskItem file, bool compositeCompile, HashSet <string> exclusionSet, HashSet <string> r2rCompositeExclusionSet)
{
// Check to see if this is a valid ILOnly image that we can compile
if (!file.ItemSpec.EndsWith(".dll", StringComparison.OrdinalIgnoreCase) && !file.ItemSpec.EndsWith(".exe", StringComparison.OrdinalIgnoreCase))
{
// If it isn't a dll or an exe, it certainly isn't a valid ILOnly image for compilation
return(Eligibility.None);
}
using (FileStream fs = new FileStream(file.ItemSpec, FileMode.Open, FileAccess.Read))
{
try
{
using (var pereader = new PEReader(fs))
{
if (!pereader.HasMetadata)
{
return(Eligibility.None);
}
MetadataReader mdReader = pereader.GetMetadataReader();
if (!mdReader.IsAssembly)
{
return(Eligibility.None);
}
if (IsReferenceAssembly(mdReader))
{
// crossgen can only take implementation assemblies, even as references
return(Eligibility.None);
}
bool excludeFromR2R = (exclusionSet != null && exclusionSet.Contains(Path.GetFileName(file.ItemSpec)));
bool excludeFromComposite = (r2rCompositeExclusionSet != null && r2rCompositeExclusionSet.Contains(Path.GetFileName(file.ItemSpec))) || excludeFromR2R;
if ((pereader.PEHeaders.CorHeader.Flags & CorFlags.ILOnly) != CorFlags.ILOnly)
{
// This can happen due to C++/CLI binaries or due to previously R2R compiled binaries.
if (!IsNonCompositeReadyToRunImage(pereader))
{
// For C++/CLI always treat as only a reference
return(Eligibility.CreateReferenceEligibility(excludeFromComposite));
}
else
{
// If previously compiled as R2R, treat as reference if this would be compiled separately
if (!compositeCompile || excludeFromComposite)
{
return(Eligibility.CreateReferenceEligibility(excludeFromComposite));
}
}
}
if (file.HasMetadataValue(MetadataKeys.ReferenceOnly, "true"))
{
return(Eligibility.CreateReferenceEligibility(excludeFromComposite));
}
if (excludeFromR2R)
{
return(Eligibility.CreateReferenceEligibility(excludeFromComposite));
}
// save these most expensive checks for last. We don't want to scan all references for IL code
if (ReferencesWinMD(mdReader) || !HasILCode(mdReader))
{
// Forwarder assemblies are not separately compiled via R2R, but when performing composite compilation, they are included in the bundle
if (excludeFromComposite || !compositeCompile)
{
return(Eligibility.CreateReferenceEligibility(excludeFromComposite));
}
}
return(Eligibility.CreateCompileEligibility(!compositeCompile || excludeFromComposite));
}
}
catch (BadImageFormatException)
{
// Not a valid assembly file
return(Eligibility.None);
}
}
}