/// <summary>
/// Creates or gets metadata for PE reference.
/// </summary>
/// <remarks>
/// If any of the following exceptions: <see cref="BadImageFormatException"/>, <see cref="FileNotFoundException"/>, <see cref="IOException"/>,
/// are thrown while reading the metadata file, the exception is caught and an appropriate diagnostic stored in <paramref name="diagnostics"/>.
/// </remarks>
private Metadata GetMetadata(PortableExecutableReference peReference, CommonMessageProvider messageProvider, Location location, DiagnosticBag diagnostics)
{
Metadata existingMetadata;
lock (ObservedMetadata)
{
if (TryGetObservedMetadata(peReference, diagnostics, out existingMetadata))
{
return(existingMetadata);
}
}
Metadata newMetadata;
Diagnostic newDiagnostic = null;
try
{
newMetadata = peReference.GetMetadataNoCopy();
// make sure basic structure of the PE image is valid:
var assemblyMetadata = newMetadata as AssemblyMetadata;
if (assemblyMetadata != null)
{
bool dummy = assemblyMetadata.IsValidAssembly();
}
else
{
bool dummy = ((ModuleMetadata)newMetadata).Module.IsLinkedModule;
}
}
catch (Exception e) when(e is BadImageFormatException || e is IOException)
{
newDiagnostic = PortableExecutableReference.ExceptionToDiagnostic(e, messageProvider, location, peReference.Display, peReference.Properties.Kind);
newMetadata = null;
}
lock (ObservedMetadata)
{
if (TryGetObservedMetadata(peReference, diagnostics, out existingMetadata))
{
return(existingMetadata);
}
if (newDiagnostic != null)
{
diagnostics.Add(newDiagnostic);
}
ObservedMetadata.Add(peReference, (MetadataOrDiagnostic)newMetadata ?? newDiagnostic);
return(newMetadata);
}
}
/// <summary>
/// Creates or gets metadata for PE reference.
/// </summary>
/// <remarks>
/// If any of the following exceptions: <see cref="BadImageFormatException"/>, <see cref="FileNotFoundException"/>, <see cref="IOException"/>,
/// are thrown while reading the metadata file, the exception is caught and an appropriate diagnostic stored in <paramref name="diagnostics"/>.
/// </remarks>
private Metadata GetMetadata(PortableExecutableReference peReference, CommonMessageProvider messageProvider, Location location, DiagnosticBag diagnostics)
{
Metadata existingMetadata;
lock (ObservedMetadata)
{
if (TryGetObservedMetadata(peReference, diagnostics, out existingMetadata))
{
return(existingMetadata);
}
}
Metadata newMetadata = null;
Diagnostic newDiagnostic = null;
try
{
newMetadata = peReference.GetMetadata();
}
catch (Exception e)
{
if (e is BadImageFormatException || e is IOException)
{
newDiagnostic = PortableExecutableReference.ExceptionToDiagnostic(e, messageProvider, location, peReference.Display, peReference.Properties.Kind);
}
}
lock (ObservedMetadata)
{
if (TryGetObservedMetadata(peReference, diagnostics, out existingMetadata))
{
return(existingMetadata);
}
if (newDiagnostic != null)
{
diagnostics.Add(newDiagnostic);
}
ObservedMetadata.Add(peReference, (MetadataOrDiagnostic)newMetadata ?? newDiagnostic);
return(newMetadata);
}
}
private bool TryGetObservedMetadata(PortableExecutableReference peReference, DiagnosticBag diagnostics, out Metadata metadata)
{
MetadataOrDiagnostic existing;
if (ObservedMetadata.TryGetValue(peReference, out existing))
{
Debug.Assert(existing is Metadata || existing is Diagnostic);
metadata = existing as Metadata;
if (metadata == null)
{
diagnostics.Add((Diagnostic)existing);
}
return(true);
}
metadata = null;
return(false);
}
/// <summary>
/// Creates or gets metadata for PE reference.
/// </summary>
/// <remarks>
/// If any of the following exceptions: <see cref="BadImageFormatException"/>, <see cref="FileNotFoundException"/>, <see cref="IOException"/>,
/// are thrown while reading the metadata file, the exception is caught and an appropriate diagnostic stored in <paramref name="diagnostics"/>.
/// </remarks>
private Metadata GetMetadata(PortableExecutableReference peReference, CommonMessageProvider messageProvider, Location location, DiagnosticBag diagnostics)
{
Metadata existingMetadata;
lock (ObservedMetadata)
{
if (TryGetObservedMetadata(peReference, diagnostics, out existingMetadata))
{
return(existingMetadata);
}
}
Metadata newMetadata;
Diagnostic newDiagnostic;
PortableExecutableReference.TryGetMetadata(
peReference.Properties.Kind == MetadataImageKind.Assembly,
messageProvider,
location,
peReference.Display,
peReference.GetMetadata,
out newMetadata,
out newDiagnostic);
lock (ObservedMetadata)
{
if (TryGetObservedMetadata(peReference, diagnostics, out existingMetadata))
{
return(existingMetadata);
}
if (newDiagnostic != null)
{
diagnostics.Add(newDiagnostic);
}
ObservedMetadata.Add(peReference, (MetadataOrDiagnostic)newMetadata ?? newDiagnostic);
return(newMetadata);
}
}
