//
// Main routine to resolve a typeReference.
//
private static RuntimeTypeInfo TryResolveTypeReference(this TypeReferenceHandle typeReferenceHandle, MetadataReader reader, ref Exception exception)
{
TypeReference typeReference = reader.GetTypeReference(typeReferenceHandle);
EntityHandle resolutionScope = typeReference.ResolutionScope;
if (resolutionScope.IsNil)
{
// Search for an entry in the exported type table for this type
return(TryResolveTypeByName(reader, typeReference.GetFullyQualifiedTypeName(reader), ref exception));
}
switch (resolutionScope.Kind)
{
case HandleKind.ModuleReference:
// multi-module assemblies are not supported by this runtime
exception = new PlatformNotSupportedException();
return(null);
case HandleKind.TypeReference:
{
// This is a nested type. Find the enclosing type, then search for a matching nested type
RuntimeTypeInfo enclosingType = ((TypeReferenceHandle)typeReference.ResolutionScope).TryResolveTypeReference(reader, ref exception);
if (enclosingType == null)
{
Debug.Assert(exception != null);
return(null);
}
MetadataStringComparer stringComparer = reader.StringComparer;
foreach (var nestedType in enclosingType.GetNestedTypes())
{
if (stringComparer.Equals(typeReference.Name, nestedType.Name))
{
if (stringComparer.Equals(typeReference.Namespace, nestedType.Namespace))
{
return((RuntimeTypeInfo)nestedType.GetTypeInfo());
}
}
}
exception = ReflectionCoreExecution.ExecutionDomain.CreateMissingMetadataException(enclosingType, reader.GetString(typeReference.Name));
return(null);
}
case HandleKind.AssemblyReference:
{
string fullName = typeReference.GetFullyQualifiedTypeName(reader);
RuntimeAssemblyName runtimeAssemblyName = ((AssemblyReferenceHandle)resolutionScope).ToRuntimeAssemblyName(reader);
RuntimeAssembly runtimeAssembly;
exception = RuntimeAssembly.TryGetRuntimeAssembly(runtimeAssemblyName, out runtimeAssembly);
if (exception != null)
{
return(null);
}
RuntimeTypeInfo runtimeType = runtimeAssembly.GetTypeCore(fullName, ignoreCase: false);
if (runtimeType == null)
{
exception = Helpers.CreateTypeLoadException(fullName, runtimeAssemblyName.FullName);
return(null);
}
return(runtimeType);
}
case HandleKind.ModuleDefinition:
return(TryResolveTypeByName(reader, typeReference.GetFullyQualifiedTypeName(reader), ref exception));
default:
exception = new BadImageFormatException();
return(null);
}
}
