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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using System.IO;
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Runtime.Loader;
using System.Runtime.Versioning;
using System.Security;
using System.Text;
using System.Threading;
using System.Xml;
using System.Xml.Schema;
using System.Xml.Serialization;
using System.Xml.Serialization.Configuration;
namespace System.Xml.Serialization
{
public struct XmlDeserializationEvents
{
private XmlNodeEventHandler? _onUnknownNode;
private XmlAttributeEventHandler? _onUnknownAttribute;
private XmlElementEventHandler? _onUnknownElement;
private UnreferencedObjectEventHandler? _onUnreferencedObject;
internal object? sender;
public XmlNodeEventHandler? OnUnknownNode
{
get
{
return _onUnknownNode;
}
set
{
_onUnknownNode = value;
}
}
public XmlAttributeEventHandler? OnUnknownAttribute
{
get
{
return _onUnknownAttribute;
}
set
{
_onUnknownAttribute = value;
}
}
public XmlElementEventHandler? OnUnknownElement
{
get
{
return _onUnknownElement;
}
set
{
_onUnknownElement = value;
}
}
public UnreferencedObjectEventHandler? OnUnreferencedObject
{
get
{
return _onUnreferencedObject;
}
set
{
_onUnreferencedObject = value;
}
}
}
public abstract class XmlSerializerImplementation
{
public virtual XmlSerializationReader Reader { get { throw new NotSupportedException(); } }
public virtual XmlSerializationWriter Writer { get { throw new NotSupportedException(); } }
public virtual Hashtable ReadMethods { get { throw new NotSupportedException(); } }
public virtual Hashtable WriteMethods { get { throw new NotSupportedException(); } }
public virtual Hashtable TypedSerializers { get { throw new NotSupportedException(); } }
public virtual bool CanSerialize(Type type) { throw new NotSupportedException(); }
public virtual XmlSerializer GetSerializer(Type type) { throw new NotSupportedException(); }
}
// This enum is intentionally kept outside of the XmlSerializer class since if it would be a subclass
// of XmlSerializer, then any access to this enum would be treated by AOT compilers as access to the XmlSerializer
// as well, which has a large static ctor which brings in a lot of code. So keeping the enum separate
// makes sure that using just the enum itself doesn't bring in the whole of serialization code base.
internal enum SerializationMode
{
CodeGenOnly,
ReflectionOnly,
ReflectionAsBackup,
PreGenOnly
}
public class XmlSerializer
{
private static SerializationMode s_mode = SerializationMode.ReflectionAsBackup;
internal static SerializationMode Mode
{
get => RuntimeFeature.IsDynamicCodeSupported ? s_mode : SerializationMode.ReflectionOnly;
set => s_mode = value;
}
private static bool ReflectionMethodEnabled
{
get
{
return Mode == SerializationMode.ReflectionOnly || Mode == SerializationMode.ReflectionAsBackup;
}
}
private TempAssembly? _tempAssembly;
#pragma warning disable 0414
private bool _typedSerializer;
#pragma warning restore 0414
private readonly Type? _primitiveType;
private XmlMapping _mapping = null!;
private XmlDeserializationEvents _events;
internal string? DefaultNamespace;
private Type? _rootType;
private bool _isReflectionBasedSerializer;
private static readonly TempAssemblyCache s_cache = new TempAssemblyCache();
private static volatile XmlSerializerNamespaces? s_defaultNamespaces;
private static readonly XmlWriterSettings s_writerSettings = new XmlWriterSettings() { Encoding = new UTF8Encoding(false), Indent = true };
private static XmlSerializerNamespaces DefaultNamespaces
{
get
{
if (s_defaultNamespaces == null)
{
XmlSerializerNamespaces nss = new XmlSerializerNamespaces();
nss.AddInternal("xsi", XmlSchema.InstanceNamespace);
nss.AddInternal("xsd", XmlSchema.Namespace);
s_defaultNamespaces ??= nss;
}
return s_defaultNamespaces;
}
}
// Trimmer warning messages
internal const string TrimSerializationWarning = "Members from serialized types may be trimmed if not referenced directly";
private const string TrimDeserializationWarning = "Members from deserialized types may be trimmed if not referenced directly";
internal const string AotSerializationWarning = "XML serializer relies on dynamic code generation which is not available with Ahead of Time compilation";
private static readonly ContextAwareTables<Dictionary<XmlSerializerMappingKey, XmlSerializer>> s_xmlSerializerTable = new ContextAwareTables<Dictionary<XmlSerializerMappingKey, XmlSerializer>>();
protected XmlSerializer()
{
}
[RequiresUnreferencedCode(TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public XmlSerializer(Type type, XmlAttributeOverrides? overrides, Type[]? extraTypes, XmlRootAttribute? root, string? defaultNamespace) :
this(type, overrides, extraTypes, root, defaultNamespace, null)
{
}
[RequiresUnreferencedCode(TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public XmlSerializer(Type type, XmlRootAttribute? root) : this(type, null, Type.EmptyTypes, root, null, null)
{
}
[RequiresUnreferencedCode(TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public XmlSerializer(Type type, Type[]? extraTypes) : this(type, null, extraTypes, null, null, null)
{
}
[RequiresUnreferencedCode(TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public XmlSerializer(Type type, XmlAttributeOverrides? overrides) : this(type, overrides, Type.EmptyTypes, null, null, null)
{
}
[RequiresUnreferencedCode(TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public XmlSerializer(XmlTypeMapping xmlTypeMapping)
{
ArgumentNullException.ThrowIfNull(xmlTypeMapping);
if (Mode != SerializationMode.ReflectionOnly)
{
_tempAssembly = GenerateTempAssembly(xmlTypeMapping);
}
_mapping = xmlTypeMapping;
}
[RequiresUnreferencedCode(TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public XmlSerializer(Type type) : this(type, (string?)null)
{
}
[RequiresUnreferencedCode(TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public XmlSerializer(Type type, string? defaultNamespace)
{
ArgumentNullException.ThrowIfNull(type);
DefaultNamespace = defaultNamespace;
_rootType = type;
_mapping = GetKnownMapping(type, defaultNamespace)!;
if (_mapping != null)
{
_primitiveType = type;
return;
}
if (Mode == SerializationMode.ReflectionOnly)
{
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);
}
}
_mapping ??= XmlReflectionImporter.GetTopLevelMapping(type, defaultNamespace);
}
[RequiresUnreferencedCode(TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public XmlSerializer(Type type, XmlAttributeOverrides? overrides, Type[]? extraTypes, XmlRootAttribute? root, string? defaultNamespace, string? location)
{
ArgumentNullException.ThrowIfNull(type);
DefaultNamespace = defaultNamespace;
_rootType = type;
_mapping = GenerateXmlTypeMapping(type, overrides, extraTypes, root, defaultNamespace);
if (Mode != SerializationMode.ReflectionOnly)
{
_tempAssembly = GenerateTempAssembly(_mapping, type, defaultNamespace, location);
}
}
[RequiresUnreferencedCode("calls ImportTypeMapping")]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
private static XmlTypeMapping GenerateXmlTypeMapping(Type type, XmlAttributeOverrides? overrides, Type[]? extraTypes, XmlRootAttribute? root, string? defaultNamespace)
{
XmlReflectionImporter importer = new XmlReflectionImporter(overrides, defaultNamespace);
if (extraTypes != null)
{
for (int i = 0; i < extraTypes.Length; i++)
importer.IncludeType(extraTypes[i]);
}
return importer.ImportTypeMapping(type, root, defaultNamespace);
}
[RequiresUnreferencedCode("creates TempAssembly")]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
internal static TempAssembly? GenerateTempAssembly(XmlMapping xmlMapping)
{
return GenerateTempAssembly(xmlMapping, null, null);
}
[RequiresUnreferencedCode("creates TempAssembly")]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
internal static TempAssembly? GenerateTempAssembly(XmlMapping xmlMapping, Type? type, string? defaultNamespace)
{
return GenerateTempAssembly(xmlMapping, type, defaultNamespace, null);
}
[RequiresUnreferencedCode("creates TempAssembly")]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
internal static TempAssembly? GenerateTempAssembly(XmlMapping xmlMapping, Type? type, string? defaultNamespace, string? location)
{
ArgumentNullException.ThrowIfNull(xmlMapping);
xmlMapping.CheckShallow();
if (xmlMapping.IsSoap)
{
return null;
}
return new TempAssembly(new XmlMapping[] { xmlMapping }, new Type?[] { type }, defaultNamespace, location);
}
[RequiresUnreferencedCode(TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public void Serialize(TextWriter textWriter, object? o)
{
Serialize(textWriter, o, null);
}
[RequiresUnreferencedCode(TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public void Serialize(TextWriter textWriter, object? o, XmlSerializerNamespaces? namespaces)
{
XmlWriter xmlWriter = XmlWriter.Create(textWriter, s_writerSettings);
Serialize(xmlWriter, o, namespaces);
}
[RequiresUnreferencedCode(TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public void Serialize(Stream stream, object? o)
{
Serialize(stream, o, null);
}
[RequiresUnreferencedCode(TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public void Serialize(Stream stream, object? o, XmlSerializerNamespaces? namespaces)
{
XmlWriter xmlWriter = XmlWriter.Create(stream, s_writerSettings);
Serialize(xmlWriter, o, namespaces);
}
[RequiresUnreferencedCode(TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public void Serialize(XmlWriter xmlWriter, object? o)
{
Serialize(xmlWriter, o, null);
}
[RequiresUnreferencedCode(TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public void Serialize(XmlWriter xmlWriter, object? o, XmlSerializerNamespaces? namespaces)
{
Serialize(xmlWriter, o, namespaces, null);
}
[RequiresUnreferencedCode(TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public void Serialize(XmlWriter xmlWriter, object? o, XmlSerializerNamespaces? namespaces, string? encodingStyle)
{
Serialize(xmlWriter, o, namespaces, encodingStyle, null);
}
[RequiresUnreferencedCode(TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public void Serialize(XmlWriter xmlWriter, object? o, XmlSerializerNamespaces? namespaces, string? encodingStyle, string? id)
{
try
{
if (_primitiveType != null)
{
if (encodingStyle != null && encodingStyle.Length > 0)
{
throw new InvalidOperationException(SR.Format(SR.XmlInvalidEncodingNotEncoded1, encodingStyle));
}
SerializePrimitive(xmlWriter, o, namespaces);
}
else if (ShouldUseReflectionBasedSerialization(_mapping) || _isReflectionBasedSerializer)
{
SerializeUsingReflection(xmlWriter, o, namespaces, encodingStyle, id);
}
else if (_tempAssembly == null || _typedSerializer)
{
// The contion for the block is never true, thus the block is never hit.
XmlSerializationWriter writer = CreateWriter();
writer.Init(xmlWriter, namespaces == null || namespaces.Count == 0 ? DefaultNamespaces : namespaces, encodingStyle, id);
Serialize(o, writer);
}
else
{
_tempAssembly.InvokeWriter(_mapping, xmlWriter, o, namespaces == null || namespaces.Count == 0 ? DefaultNamespaces : namespaces, encodingStyle, id);
}
}
catch (Exception? e)
{
if (e is TargetInvocationException)
e = e.InnerException;
throw new InvalidOperationException(SR.XmlGenError, e);
}
xmlWriter.Flush();
}
[RequiresUnreferencedCode("calls GetMapping")]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
private void SerializeUsingReflection(XmlWriter xmlWriter, object? o, XmlSerializerNamespaces? namespaces, string? encodingStyle, string? id)
{
XmlMapping mapping = GetMapping();
var writer = new ReflectionXmlSerializationWriter(mapping, xmlWriter, namespaces == null || namespaces.Count == 0 ? DefaultNamespaces : namespaces, encodingStyle, id);
writer.WriteObject(o);
}
[RequiresUnreferencedCode("calls GenerateXmlTypeMapping")]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
private XmlMapping GetMapping()
{
if (_mapping == null || !_mapping.GenerateSerializer)
{
_mapping = GenerateXmlTypeMapping(_rootType!, null, null, null, DefaultNamespace);
}
return _mapping;
}
[RequiresUnreferencedCode(TrimDeserializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public object? Deserialize(Stream stream)
{
XmlReader xmlReader = XmlReader.Create(stream, new XmlReaderSettings() { IgnoreWhitespace = true });
return Deserialize(xmlReader, null);
}
[RequiresUnreferencedCode(TrimDeserializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public object? Deserialize(TextReader textReader)
{
XmlTextReader xmlReader = new XmlTextReader(textReader);
xmlReader.WhitespaceHandling = WhitespaceHandling.Significant;
xmlReader.Normalization = true;
xmlReader.XmlResolver = null;
return Deserialize(xmlReader, null);
}
[RequiresUnreferencedCode(TrimDeserializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public object? Deserialize(XmlReader xmlReader)
{
return Deserialize(xmlReader, null);
}
[RequiresUnreferencedCode(TrimDeserializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public object? Deserialize(XmlReader xmlReader, XmlDeserializationEvents events)
{
return Deserialize(xmlReader, null, events);
}
[RequiresUnreferencedCode(TrimDeserializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public object? Deserialize(XmlReader xmlReader, string? encodingStyle)
{
return Deserialize(xmlReader, encodingStyle, _events);
}
[RequiresUnreferencedCode(TrimDeserializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public object? Deserialize(XmlReader xmlReader, string? encodingStyle, XmlDeserializationEvents events)
{
events.sender = this;
try
{
if (_primitiveType != null)
{
if (encodingStyle != null && encodingStyle.Length > 0)
{
throw new InvalidOperationException(SR.Format(SR.XmlInvalidEncodingNotEncoded1, encodingStyle));
}
return DeserializePrimitive(xmlReader, events);
}
else if (ShouldUseReflectionBasedSerialization(_mapping) || _isReflectionBasedSerializer)
{
return DeserializeUsingReflection(xmlReader, encodingStyle, events);
}
else if (_tempAssembly == null || _typedSerializer)
{
XmlSerializationReader reader = CreateReader();
reader.Init(xmlReader, events, encodingStyle);
return Deserialize(reader);
}
else
{
return _tempAssembly.InvokeReader(_mapping, xmlReader, events, encodingStyle);
}
}
catch (Exception? e)
{
if (e is TargetInvocationException)
e = e.InnerException;
if (xmlReader is IXmlLineInfo lineInfo)
{
throw new InvalidOperationException(SR.Format(SR.XmlSerializeErrorDetails, lineInfo.LineNumber.ToString(CultureInfo.InvariantCulture), lineInfo.LinePosition.ToString(CultureInfo.InvariantCulture)), e);
}
else
{
throw new InvalidOperationException(SR.XmlSerializeError, e);
}
}
}
[RequiresUnreferencedCode("calls GetMapping")]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
private object? DeserializeUsingReflection(XmlReader xmlReader, string? encodingStyle, XmlDeserializationEvents events)
{
XmlMapping mapping = GetMapping();
var reader = new ReflectionXmlSerializationReader(mapping, xmlReader, events, encodingStyle);
return reader.ReadObject();
}
private static bool ShouldUseReflectionBasedSerialization(XmlMapping mapping)
{
return Mode == SerializationMode.ReflectionOnly
|| (mapping != null && mapping.IsSoap);
}
public virtual bool CanDeserialize(XmlReader xmlReader)
{
if (_primitiveType != null)
{
TypeDesc typeDesc = (TypeDesc)TypeScope.PrimtiveTypes[_primitiveType]!;
return xmlReader.IsStartElement(typeDesc.DataType!.Name!, string.Empty);
}
else if (ShouldUseReflectionBasedSerialization(_mapping) || _isReflectionBasedSerializer)
{
// If we should use reflection, we will try to do reflection-based deserialization, without fallback.
// Don't check xmlReader.IsStartElement to avoid having to duplicate SOAP deserialization logic here.
// It is better to return an incorrect 'true', which will throw during Deserialize than to return an
// incorrect 'false', and the caller won't even try to Deserialize when it would succeed.
return true;
}
else if (_tempAssembly != null)
{
return _tempAssembly.CanRead(_mapping, xmlReader);
}
else
{
return false;
}
}
[RequiresUnreferencedCode(TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public static XmlSerializer?[] FromMappings(XmlMapping[]? mappings)
{
return FromMappings(mappings, (Type?)null);
}
[RequiresUnreferencedCode(TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
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;
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!]!;
serializers[i].SetTempAssembly(tempAssembly, mappings[i]);
}
return serializers;
}
else
{
// Use XmlSerializer cache when the type is not null.
return GetSerializersFromCache(mappings, type);
}
}
}
else
{
XmlSerializer?[] serializers = new XmlSerializer?[mappings.Length];
for (int i = 0; i < serializers.Length; i++)
{
serializers[i] = contract!.TypedSerializers[mappings[i].Key!] as XmlSerializer;
if (serializers[i] != null)
TempAssembly.VerifyLoadContext(serializers[i]!._rootType, type!.Assembly);
}
return serializers;
}
}
private static XmlSerializer[] GetReflectionBasedSerializers(XmlMapping[] mappings, Type? type)
{
var serializers = new XmlSerializer[mappings.Length];
for (int i = 0; i < serializers.Length; i++)
{
serializers[i] = new XmlSerializer();
serializers[i]._rootType = type;
serializers[i]._mapping = mappings[i];
serializers[i]._isReflectionBasedSerializer = true;
}
return serializers;
}
[RequiresUnreferencedCode("calls GenerateSerializerToStream")]
[UnconditionalSuppressMessage("SingleFile", "IL3000: Avoid accessing Assembly file path when publishing as a single file",
Justification = "Code is used on diagnostics so we fallback to print assembly.FullName if assembly.Location is empty")]
internal static bool GenerateSerializer(Type[]? types, XmlMapping[] mappings, Stream stream)
{
if (types == null || types.Length == 0)
return false;
ArgumentNullException.ThrowIfNull(mappings);
ArgumentNullException.ThrowIfNull(stream);
if (XmlMapping.IsShallow(mappings))
{
throw new InvalidOperationException(SR.XmlMelformMapping);
}
Assembly? assembly = null;
for (int i = 0; i < types.Length; i++)
{
Type type = types[i];
if (DynamicAssemblies.IsTypeDynamic(type))
{
throw new InvalidOperationException(SR.Format(SR.XmlPregenTypeDynamic, type.FullName));
}
if (assembly == null)
{
assembly = type.Assembly;
}
else if (type.Assembly != assembly)
{
string? nameOrLocation = assembly.Location;
if (nameOrLocation == string.Empty)
nameOrLocation = assembly.FullName;
throw new ArgumentException(SR.Format(SR.XmlPregenOrphanType, type.FullName, nameOrLocation), nameof(types));
}
}
return TempAssembly.GenerateSerializerToStream(mappings, types, null, assembly, new Hashtable(), stream);
}
[RequiresUnreferencedCode("calls Contract")]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
private static XmlSerializer[] GetSerializersFromCache(XmlMapping[] mappings, Type type)
{
XmlSerializer?[] serializers = new XmlSerializer?[mappings.Length];
Dictionary<XmlSerializerMappingKey, XmlSerializer>? typedMappingTable = null;
AssemblyLoadContext? alc = AssemblyLoadContext.GetLoadContext(type.Assembly);
typedMappingTable = s_xmlSerializerTable.GetOrCreateValue(type, _ => new Dictionary<XmlSerializerMappingKey, XmlSerializer>());
lock (typedMappingTable)
{
var pendingKeys = new Dictionary<XmlSerializerMappingKey, int>();
for (int i = 0; i < mappings.Length; i++)
{
XmlSerializerMappingKey mappingKey = new XmlSerializerMappingKey(mappings[i]);
if (!typedMappingTable.TryGetValue(mappingKey, out serializers[i]))
{
pendingKeys.Add(mappingKey, i);
}
}
if (pendingKeys.Count > 0)
{
XmlMapping[] pendingMappings = new XmlMapping[pendingKeys.Count];
int index = 0;
foreach (XmlSerializerMappingKey mappingKey in pendingKeys.Keys)
{
pendingMappings[index++] = mappingKey.Mapping;
}
TempAssembly tempAssembly = new TempAssembly(pendingMappings, new Type[] { type }, null, null);
XmlSerializerImplementation contract = tempAssembly.Contract;
foreach (XmlSerializerMappingKey mappingKey in pendingKeys.Keys)
{
index = pendingKeys[mappingKey];
serializers[index] = (XmlSerializer)contract.TypedSerializers[mappingKey.Mapping.Key!]!;
serializers[index]!.SetTempAssembly(tempAssembly, mappingKey.Mapping);
typedMappingTable[mappingKey] = serializers[index]!;
}
}
}
return serializers!;
}
[RequiresUnreferencedCode(TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public static XmlSerializer?[] FromTypes(Type[]? types)
{
if (types == null)
return Array.Empty<XmlSerializer>();
XmlReflectionImporter importer = new XmlReflectionImporter();
XmlTypeMapping[] mappings = new XmlTypeMapping[types.Length];
for (int i = 0; i < types.Length; i++)
{
mappings[i] = importer.ImportTypeMapping(types[i]);
}
return FromMappings(mappings);
}
public static string GetXmlSerializerAssemblyName(Type type)
{
return GetXmlSerializerAssemblyName(type, null);
}
public static string GetXmlSerializerAssemblyName(Type type, string? defaultNamespace)
{
ArgumentNullException.ThrowIfNull(type);
return Compiler.GetTempAssemblyName(type.Assembly.GetName(), defaultNamespace);
}
public event XmlNodeEventHandler UnknownNode
{
add
{
_events.OnUnknownNode += value;
}
remove
{
_events.OnUnknownNode -= value;
}
}
public event XmlAttributeEventHandler UnknownAttribute
{
add
{
_events.OnUnknownAttribute += value;
}
remove
{
_events.OnUnknownAttribute -= value;
}
}
public event XmlElementEventHandler UnknownElement
{
add
{
_events.OnUnknownElement += value;
}
remove
{
_events.OnUnknownElement -= value;
}
}
public event UnreferencedObjectEventHandler UnreferencedObject
{
add
{
_events.OnUnreferencedObject += value;
}
remove
{
_events.OnUnreferencedObject -= value;
}
}
protected virtual XmlSerializationReader CreateReader() { throw new NotImplementedException(); }
protected virtual object Deserialize(XmlSerializationReader reader) { throw new NotImplementedException(); }
protected virtual XmlSerializationWriter CreateWriter() { throw new NotImplementedException(); }
protected virtual void Serialize(object? o, XmlSerializationWriter writer) { throw new NotImplementedException(); }
internal void SetTempAssembly(TempAssembly tempAssembly, XmlMapping mapping)
{
_tempAssembly = tempAssembly;
_mapping = mapping;
_typedSerializer = true;
}
private static XmlTypeMapping? GetKnownMapping(Type type, string? ns)
{
if (ns != null && ns != string.Empty)
return null;
TypeDesc? typeDesc = (TypeDesc?)TypeScope.PrimtiveTypes[type];
if (typeDesc == null)
return null;
ElementAccessor element = new ElementAccessor();
element.Name = typeDesc.DataType!.Name;
XmlTypeMapping mapping = new XmlTypeMapping(null, element);
mapping.SetKeyInternal(XmlMapping.GenerateKey(type, null, null));
return mapping;
}
private void SerializePrimitive(XmlWriter xmlWriter, object? o, XmlSerializerNamespaces? namespaces)
{
XmlSerializationPrimitiveWriter writer = new XmlSerializationPrimitiveWriter();
writer.Init(xmlWriter, namespaces, null, null);
switch (Type.GetTypeCode(_primitiveType))
{
case TypeCode.String:
writer.Write_string(o);
break;
case TypeCode.Int32:
writer.Write_int(o);
break;
case TypeCode.Boolean:
writer.Write_boolean(o);
break;
case TypeCode.Int16:
writer.Write_short(o);
break;
case TypeCode.Int64:
writer.Write_long(o);
break;
case TypeCode.Single:
writer.Write_float(o);
break;
case TypeCode.Double:
writer.Write_double(o);
break;
case TypeCode.Decimal:
writer.Write_decimal(o);
break;
case TypeCode.DateTime:
writer.Write_dateTime(o);
break;
case TypeCode.Char:
writer.Write_char(o);
break;
case TypeCode.Byte:
writer.Write_unsignedByte(o);
break;
case TypeCode.SByte:
writer.Write_byte(o);
break;
case TypeCode.UInt16:
writer.Write_unsignedShort(o);
break;
case TypeCode.UInt32:
writer.Write_unsignedInt(o);
break;
case TypeCode.UInt64:
writer.Write_unsignedLong(o);
break;
default:
if (_primitiveType == typeof(XmlQualifiedName))
{
writer.Write_QName(o);
}
else if (_primitiveType == typeof(byte[]))
{
writer.Write_base64Binary(o);
}
else if (_primitiveType == typeof(Guid))
{
writer.Write_guid(o);
}
else if (_primitiveType == typeof(TimeSpan))
{
writer.Write_TimeSpan(o);
}
else if (_primitiveType == typeof(DateTimeOffset))
{
writer.Write_dateTimeOffset(o);
}
else
{
throw new InvalidOperationException(SR.Format(SR.XmlUnxpectedType, _primitiveType!.FullName));
}
break;
}
}
private object? DeserializePrimitive(XmlReader xmlReader, XmlDeserializationEvents events)
{
XmlSerializationPrimitiveReader reader = new XmlSerializationPrimitiveReader();
reader.Init(xmlReader, events, null);
object? o;
switch (Type.GetTypeCode(_primitiveType))
{
case TypeCode.String:
o = reader.Read_string();
break;
case TypeCode.Int32:
o = reader.Read_int();
break;
case TypeCode.Boolean:
o = reader.Read_boolean();
break;
case TypeCode.Int16:
o = reader.Read_short();
break;
case TypeCode.Int64:
o = reader.Read_long();
break;
case TypeCode.Single:
o = reader.Read_float();
break;
case TypeCode.Double:
o = reader.Read_double();
break;
case TypeCode.Decimal:
o = reader.Read_decimal();
break;
case TypeCode.DateTime:
o = reader.Read_dateTime();
break;
case TypeCode.Char:
o = reader.Read_char();
break;
case TypeCode.Byte:
o = reader.Read_unsignedByte();
break;
case TypeCode.SByte:
o = reader.Read_byte();
break;
case TypeCode.UInt16:
o = reader.Read_unsignedShort();
break;
case TypeCode.UInt32:
o = reader.Read_unsignedInt();
break;
case TypeCode.UInt64:
o = reader.Read_unsignedLong();
break;
default:
if (_primitiveType == typeof(XmlQualifiedName))
{
o = reader.Read_QName();
}
else if (_primitiveType == typeof(byte[]))
{
o = reader.Read_base64Binary();
}
else if (_primitiveType == typeof(Guid))
{
o = reader.Read_guid();
}
else if (_primitiveType == typeof(TimeSpan))
{
o = reader.Read_TimeSpan();
}
else if (_primitiveType == typeof(DateTimeOffset))
{
o = reader.Read_dateTimeOffset();
}
else
{
throw new InvalidOperationException(SR.Format(SR.XmlUnxpectedType, _primitiveType!.FullName));
}
break;
}
return o;
}
private sealed class XmlSerializerMappingKey
{
public XmlMapping Mapping;
public XmlSerializerMappingKey(XmlMapping mapping)
{
this.Mapping = mapping;
}
public override bool Equals([NotNullWhen(true)] object? obj)
{
XmlSerializerMappingKey? other = obj as XmlSerializerMappingKey;
if (other == null)
return false;
if (this.Mapping.Key != other.Mapping.Key)
return false;
if (this.Mapping.ElementName != other.Mapping.ElementName)
return false;
if (this.Mapping.Namespace != other.Mapping.Namespace)
return false;
if (this.Mapping.IsSoap != other.Mapping.IsSoap)
return false;
return true;
}
public override int GetHashCode()
{
int hashCode = this.Mapping.IsSoap ? 0 : 1;
if (this.Mapping.Key != null)
hashCode ^= this.Mapping.Key.GetHashCode();
if (this.Mapping.ElementName != null)
hashCode ^= this.Mapping.ElementName.GetHashCode();
if (this.Mapping.Namespace != null)
hashCode ^= this.Mapping.Namespace.GetHashCode();
return hashCode;
}
}
}
}
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