public static Type GetElementType(XmlType xmlType, IXmlLineInfo xmlInfo, Assembly currentAssembly,
out XamlParseException exception)
{
#if NETSTANDARD2_0 || NET6_0
bool hasRetriedNsSearch = false;
#endif
IList <XamlLoader.FallbackTypeInfo> potentialTypes;
#if NETSTANDARD2_0 || NET6_0
retry:
#endif
if (s_xmlnsDefinitions == null)
{
GatherXmlnsDefinitionAttributes();
}
Type type = xmlType.GetTypeReference(
s_xmlnsDefinitions,
currentAssembly?.FullName,
(typeInfo) =>
Type.GetType($"{typeInfo.ClrNamespace}.{typeInfo.TypeName}, {typeInfo.AssemblyName}"),
out potentialTypes);
var typeArguments = xmlType.TypeArguments;
exception = null;
#if NETSTANDARD2_0 || NET6_0
if (type == null)
{
// This covers the scenario where the AppDomain's loaded
// assemblies might have changed since this method was first
// called. This occurred during unit test runs and could
// conceivably occur in the field.
if (!hasRetriedNsSearch)
{
hasRetriedNsSearch = true;
s_xmlnsDefinitions = null;
goto retry;
}
}
#endif
if (XamlLoader.FallbackTypeResolver != null)
{
type = XamlLoader.FallbackTypeResolver(potentialTypes, type);
}
if (type != null && typeArguments != null)
{
XamlParseException innerexception = null;
var args = typeArguments.Select(delegate(XmlType xmltype)
{
var t = GetElementType(xmltype, xmlInfo, currentAssembly, out XamlParseException xpe);
if (xpe != null)
{
innerexception = xpe;
return(null);
}
return(t);
}).ToArray();
if (innerexception != null)
{
exception = innerexception;
return(null);
}
try
{
type = type.MakeGenericType(args);
}
catch (InvalidOperationException)
{
exception = new XamlParseException($"Type {type} is not a GenericTypeDefinition", xmlInfo);
}
}
if (type == null)
{
exception = new XamlParseException($"Type {xmlType.Name} not found in xmlns {xmlType.NamespaceUri}", xmlInfo);
}
return(type);
}