public XmlSerializer(Type type, string?defaultNamespace)
{
if (type == null)
{
throw new ArgumentNullException(nameof(type));
}
DefaultNamespace = defaultNamespace;
_rootType = type;
_mapping = GetKnownMapping(type, defaultNamespace) !;
if (_mapping != null)
{
_primitiveType = type;
return;
}
_tempAssembly = s_cache[defaultNamespace, type];
if (_tempAssembly == null)
{
lock (s_cache)
{
_tempAssembly = s_cache[defaultNamespace, type];
if (_tempAssembly == null)
{
{
XmlSerializerImplementation?contract = null;
Assembly?assembly = TempAssembly.LoadGeneratedAssembly(type, defaultNamespace, out contract);
if (assembly == null)
{
if (Mode == SerializationMode.PreGenOnly)
{
AssemblyName name = type.Assembly.GetName();
var serializerName = Compiler.GetTempAssemblyName(name, defaultNamespace);
throw new FileLoadException(SR.Format(SR.FailLoadAssemblyUnderPregenMode, serializerName));
}
// need to reflect and generate new serialization assembly
XmlReflectionImporter importer = new XmlReflectionImporter(defaultNamespace);
_mapping = importer.ImportTypeMapping(type, null, defaultNamespace);
_tempAssembly = GenerateTempAssembly(_mapping, type, defaultNamespace) !;
}
else
{
// we found the pre-generated assembly, now make sure that the assembly has the right serializer
// try to avoid the reflection step, need to get ElementName, namespace and the Key form the type
_mapping = XmlReflectionImporter.GetTopLevelMapping(type, defaultNamespace);
_tempAssembly = new TempAssembly(new XmlMapping[] { _mapping }, assembly, contract);
}
}
}
s_cache.Add(defaultNamespace, type, _tempAssembly);
}
}
if (_mapping == null)
{
_mapping = XmlReflectionImporter.GetTopLevelMapping(type, defaultNamespace);
}
}
public static XmlSerializer[] FromMappings(XmlMapping[]?mappings, Type?type)
{
if (mappings == null || mappings.Length == 0)
{
return(Array.Empty <XmlSerializer>());
}
bool anySoapMapping = false;
foreach (var mapping in mappings)
{
if (mapping.IsSoap)
{
anySoapMapping = true;
}
}
if ((anySoapMapping && ReflectionMethodEnabled) || Mode == SerializationMode.ReflectionOnly)
{
XmlSerializer[] serializers = GetReflectionBasedSerializers(mappings, type);
return(serializers);
}
XmlSerializerImplementation?contract = null;
Assembly? assembly = type == null ? null : TempAssembly.LoadGeneratedAssembly(type, null, out contract);
TempAssembly?tempAssembly = null;
if (assembly == null)
{
if (Mode == SerializationMode.PreGenOnly)
{
AssemblyName name = type !.Assembly.GetName();
string serializerName = Compiler.GetTempAssemblyName(name, null);
throw new FileLoadException(SR.Format(SR.FailLoadAssemblyUnderPregenMode, serializerName));
}
if (XmlMapping.IsShallow(mappings))
{
return(Array.Empty <XmlSerializer>());
}
else
{
if (type == null)
{
tempAssembly = new TempAssembly(mappings, new Type?[] { type }, null, null);
XmlSerializer[] serializers = new XmlSerializer[mappings.Length];
contract = tempAssembly.Contract;
for (int i = 0; i < serializers.Length; i++)
{
serializers[i] = (XmlSerializer)contract.TypedSerializers[mappings[i].Key !] !;
internal static Assembly?LoadGeneratedAssembly(Type type, string?defaultNamespace, out XmlSerializerImplementation?contract)
{
Assembly?serializer = null;
contract = null;
string?serializerName = null;
// check to see if we loading explicit pre-generated assembly
object[] attrs = type.GetCustomAttributes(typeof(System.Xml.Serialization.XmlSerializerAssemblyAttribute), false);
if (attrs.Length == 0)
{
// Guess serializer name: if parent assembly signed use strong name
AssemblyName name = type.Assembly.GetName();
serializerName = Compiler.GetTempAssemblyName(name, defaultNamespace);
// use strong name
name.Name = serializerName;
name.CodeBase = null;
name.CultureInfo = CultureInfo.InvariantCulture;
string?serializerPath = null;
try
{
if (!string.IsNullOrEmpty(type.Assembly.Location))
{
serializerPath = Path.Combine(Path.GetDirectoryName(type.Assembly.Location) !, serializerName + ".dll");
}
if ((string.IsNullOrEmpty(serializerPath) || !File.Exists(serializerPath)) && !string.IsNullOrEmpty(Assembly.GetEntryAssembly()?.Location))
{
serializerPath = Path.Combine(Path.GetDirectoryName(Assembly.GetEntryAssembly() !.Location) !, serializerName + ".dll");
}
if (!string.IsNullOrEmpty(serializerPath))
{
serializer = Assembly.LoadFile(serializerPath);
}
}
catch (Exception e)
{
if (e is ThreadAbortException || e is StackOverflowException || e is OutOfMemoryException)
{
throw;
}
byte[]? token = name.GetPublicKeyToken();
if (token != null && token.Length > 0)
{
// the parent assembly was signed, so do not try to LoadWithPartialName
return(null);
}
}
if (serializer == null)
{
if (XmlSerializer.Mode == SerializationMode.PreGenOnly)
{
throw new Exception(SR.Format(SR.FailLoadAssemblyUnderPregenMode, serializerName));
}
return(null);
}
if (!IsSerializerVersionMatch(serializer, type, defaultNamespace))
{
XmlSerializationEventSource.Log.XmlSerializerExpired(serializerName, type.FullName !);
return(null);
}
}
else
{
System.Xml.Serialization.XmlSerializerAssemblyAttribute assemblyAttribute = (System.Xml.Serialization.XmlSerializerAssemblyAttribute)attrs[0];
if (assemblyAttribute.AssemblyName != null && assemblyAttribute.CodeBase != null)
{
throw new InvalidOperationException(SR.Format(SR.XmlPregenInvalidXmlSerializerAssemblyAttribute, "AssemblyName", "CodeBase"));
}
// found XmlSerializerAssemblyAttribute attribute, it should have all needed information to load the pre-generated serializer
if (assemblyAttribute.AssemblyName != null)
{
serializerName = assemblyAttribute.AssemblyName;
#pragma warning disable 618
serializer = Assembly.LoadWithPartialName(serializerName);
#pragma warning restore 618
}
else if (assemblyAttribute.CodeBase != null && assemblyAttribute.CodeBase.Length > 0)
{
serializerName = assemblyAttribute.CodeBase;
serializer = Assembly.LoadFrom(serializerName);
}
else
{
serializerName = type.Assembly.FullName;
serializer = type.Assembly;
}
if (serializer == null)
{
throw new FileNotFoundException(null, serializerName);
}
}
Type contractType = GetTypeFromAssembly(serializer, "XmlSerializerContract");
contract = (XmlSerializerImplementation)Activator.CreateInstance(contractType) !;
if (contract.CanSerialize(type))
{
return(serializer);
}
return(null);
}
internal TempAssembly(XmlMapping[] xmlMappings, Assembly assembly, XmlSerializerImplementation?contract)
{
_assembly = assembly;
InitAssemblyMethods(xmlMappings);
_contract = contract;
}
internal static Assembly?LoadGeneratedAssembly(Type type, string?defaultNamespace, out XmlSerializerImplementation?contract)
{
Assembly?serializer = null;
contract = null;
string?serializerName;
using (AssemblyLoadContext.EnterContextualReflection(type.Assembly))
{
// check to see if we loading explicit pre-generated assembly
object[] attrs = type.GetCustomAttributes(typeof(System.Xml.Serialization.XmlSerializerAssemblyAttribute), false);
if (attrs.Length == 0)
{
// Guess serializer name: if parent assembly signed use strong name
AssemblyName name = type.Assembly.GetName();
serializerName = Compiler.GetTempAssemblyName(name, defaultNamespace);
// use strong name
name.Name = serializerName;
name.CodeBase = null;
name.CultureInfo = CultureInfo.InvariantCulture;
try
{
serializer = Assembly.Load(name);
}
catch (Exception e)
{
if (e is OutOfMemoryException)
{
throw;
}
}
serializer ??= LoadAssemblyByPath(type, serializerName);
if (serializer == null)
{
if (XmlSerializer.Mode == SerializationMode.PreGenOnly)
{
throw new Exception(SR.Format(SR.FailLoadAssemblyUnderPregenMode, serializerName));
}
return(null);
}
if (!IsSerializerVersionMatch(serializer, type, defaultNamespace))
{
XmlSerializationEventSource.Log.XmlSerializerExpired(serializerName, type.FullName !);
return(null);
}
}
else
{
System.Xml.Serialization.XmlSerializerAssemblyAttribute assemblyAttribute = (System.Xml.Serialization.XmlSerializerAssemblyAttribute)attrs[0];
if (assemblyAttribute.AssemblyName != null && assemblyAttribute.CodeBase != null)
{
throw new InvalidOperationException(SR.Format(SR.XmlPregenInvalidXmlSerializerAssemblyAttribute, "AssemblyName", "CodeBase"));
}
// found XmlSerializerAssemblyAttribute attribute, it should have all needed information to load the pre-generated serializer
if (assemblyAttribute.AssemblyName != null)
{
serializerName = assemblyAttribute.AssemblyName;
serializer = Assembly.Load(serializerName); // LoadWithPartialName just does this in .Net Core; changing the obsolete call.
}
else if (assemblyAttribute.CodeBase != null && assemblyAttribute.CodeBase.Length > 0)
{
serializerName = assemblyAttribute.CodeBase;
serializer = Assembly.LoadFrom(serializerName);
}
else
{
serializerName = type.Assembly.FullName;
serializer = type.Assembly;
}
if (serializer == null)
{
throw new FileNotFoundException(null, serializerName);
}
}
Type contractType = GetTypeFromAssembly(serializer, "XmlSerializerContract");
contract = (XmlSerializerImplementation)Activator.CreateInstance(contractType) !;
if (contract.CanSerialize(type))
{
return(serializer);
}
}
return(null);
}