private static bool TryGetModules(AssemblyMetadata assemblyMetadata, out ImmutableArray <ModuleMetadata> modules)
{
// Gracefully handle documented exceptions from 'GetModules' invocation.
try
{
modules = assemblyMetadata.GetModules();
return(true);
}
catch (Exception ex) when(ex is BadImageFormatException ||
ex is IOException ||
ex is ObjectDisposedException)
{
modules = default;
return(false);
}
}
/// <summary>
/// Opens the analyzer dll with the metadata reader and builds a map of language -> analyzer type names.
/// </summary>
/// <exception cref="BadImageFormatException">The PE image format is invalid.</exception>
/// <exception cref="IOException">IO error reading the metadata.</exception>
private static ImmutableDictionary <string, ImmutableHashSet <string> > GetAnalyzerTypeNameMap(string fullPath, AttributePredicate attributePredicate)
{
using (AssemblyMetadata assembly = AssemblyMetadata.CreateFromFile(fullPath))
{
IEnumerable <IGrouping <string, string> > typeNameMap = from module in assembly.GetModules()
from typeDefHandle in module.MetadataReader.TypeDefinitions
let typeDef = module.MetadataReader.GetTypeDefinition(typeDefHandle)
let typeName = GetFullyQualifiedTypeName(typeDef, module.Module)
from supportedLanguage in GetSupportedLanguages(typeDef, module.Module, attributePredicate)
group typeName by supportedLanguage;
return(typeNameMap.ToImmutableDictionary(g => g.Key, g => g.ToImmutableHashSet()));
}
}
