private async ValueTask <ImmutableArray <IMethodSymbol>?> GetExtensionMethodSymbolsFromPeReferenceAsync(
PortableExecutableReference peReference,
bool forceCacheCreation,
CancellationToken cancellationToken)
{
SymbolTreeInfo?symbolInfo;
if (forceCacheCreation)
{
symbolInfo = await SymbolTreeInfo.GetInfoForMetadataReferenceAsync(
_originatingDocument.Project.Solution, peReference, loadOnly : false, cancellationToken).ConfigureAwait(false);
}
else
{
var cachedInfoTask = SymbolTreeInfo.TryGetCachedInfoForMetadataReferenceIgnoreChecksumAsync(peReference, cancellationToken);
if (cachedInfoTask.IsCompleted)
{
// Use cached data if available, even checksum doesn't match. We will update the cache in the background.
symbolInfo = await cachedInfoTask.ConfigureAwait(false);
}
else
{
// No cached data immediately available, returns null to indicate index not ready
return(null);
}
}
if (symbolInfo is null ||
!symbolInfo.ContainsExtensionMethod ||
_originatingSemanticModel.Compilation.GetAssemblyOrModuleSymbol(peReference) is not IAssemblySymbol assembly)
{
return(ImmutableArray <IMethodSymbol> .Empty);
}
var filter = CreateAggregatedFilter(symbolInfo);
var internalsVisible = _originatingSemanticModel.Compilation.Assembly.IsSameAssemblyOrHasFriendAccessTo(assembly);
var matchingMethodSymbols = GetPotentialMatchingSymbolsFromAssembly(assembly, filter, internalsVisible, cancellationToken);
return(GetExtensionMethodsForSymbolsFromSameCompilation(matchingMethodSymbols, cancellationToken));
}
