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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.ComponentModel;
using System.Diagnostics;
using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Threading;
using System.Xml;
using System.Xml.Schema;
using System.Xml.Serialization;
namespace System.Xml.Serialization
{
///<internalonly/>
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public class XmlReflectionImporter
{
private readonly TypeScope _typeScope;
private readonly XmlAttributeOverrides _attributeOverrides;
private readonly XmlAttributes _defaultAttributes = new XmlAttributes();
private readonly NameTable _types = new NameTable(); // xmltypename + xmlns -> Mapping
private readonly NameTable _nullables = new NameTable(); // xmltypename + xmlns -> NullableMapping
private readonly NameTable _elements = new NameTable(); // xmlelementname + xmlns -> ElementAccessor
private NameTable? _xsdAttributes; // xmlattributetname + xmlns -> AttributeAccessor
private Hashtable? _specials; // type -> SpecialMapping
private readonly Hashtable _anonymous = new Hashtable(); // type -> AnonymousMapping
private NameTable? _serializables; // type name --> new SerializableMapping
private StructMapping? _root;
private readonly string _defaultNs;
private readonly ModelScope _modelScope;
private int _arrayNestingLevel;
private XmlArrayItemAttributes? _savedArrayItemAttributes;
private string? _savedArrayNamespace;
private int _choiceNum = 1;
private enum ImportContext
{
Text,
Attribute,
Element
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public XmlReflectionImporter() : this(null, null)
{
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public XmlReflectionImporter(string? defaultNamespace) : this(null, defaultNamespace)
{
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public XmlReflectionImporter(XmlAttributeOverrides? attributeOverrides) : this(attributeOverrides, null)
{
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public XmlReflectionImporter(XmlAttributeOverrides? attributeOverrides, string? defaultNamespace)
{
_defaultNs = defaultNamespace ?? string.Empty;
_attributeOverrides = attributeOverrides ?? new XmlAttributeOverrides();
_typeScope = new TypeScope();
_modelScope = new ModelScope(_typeScope);
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
[RequiresUnreferencedCode(XmlSerializer.TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public void IncludeTypes(ICustomAttributeProvider provider)
{
IncludeTypes(provider, new RecursionLimiter());
}
[RequiresUnreferencedCode("calls IncludeType")]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
private void IncludeTypes(ICustomAttributeProvider provider, RecursionLimiter limiter)
{
object[] attrs = provider.GetCustomAttributes(typeof(XmlIncludeAttribute), false);
for (int i = 0; i < attrs.Length; i++)
{
Type type = ((XmlIncludeAttribute)attrs[i]).Type!;
IncludeType(type, limiter);
}
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
[RequiresUnreferencedCode(XmlSerializer.TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public void IncludeType(Type type)
{
IncludeType(type, new RecursionLimiter());
}
[RequiresUnreferencedCode("calls ImportTypeMapping")]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
private void IncludeType(Type type, RecursionLimiter limiter)
{
int previousNestingLevel = _arrayNestingLevel;
XmlArrayItemAttributes? previousArrayItemAttributes = _savedArrayItemAttributes;
string? previousArrayNamespace = _savedArrayNamespace;
_arrayNestingLevel = 0;
_savedArrayItemAttributes = null;
_savedArrayNamespace = null;
TypeMapping mapping = ImportTypeMapping(_modelScope.GetTypeModel(type), _defaultNs, ImportContext.Element, string.Empty, null, limiter);
if (mapping.IsAnonymousType && !mapping.TypeDesc!.IsSpecial)
{
//XmlAnonymousInclude=Cannot include anonymous type '{0}'.
throw new InvalidOperationException(SR.Format(SR.XmlAnonymousInclude, type.FullName));
}
_arrayNestingLevel = previousNestingLevel;
_savedArrayItemAttributes = previousArrayItemAttributes;
_savedArrayNamespace = previousArrayNamespace;
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
[RequiresUnreferencedCode(XmlSerializer.TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public XmlTypeMapping ImportTypeMapping(Type type)
{
return ImportTypeMapping(type, null, null);
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
[RequiresUnreferencedCode(XmlSerializer.TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public XmlTypeMapping ImportTypeMapping(Type type, string? defaultNamespace)
{
return ImportTypeMapping(type, null, defaultNamespace);
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
[RequiresUnreferencedCode(XmlSerializer.TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public XmlTypeMapping ImportTypeMapping(Type type, XmlRootAttribute? root)
{
return ImportTypeMapping(type, root, null);
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
[RequiresUnreferencedCode(XmlSerializer.TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public XmlTypeMapping ImportTypeMapping(Type type, XmlRootAttribute? root, string? defaultNamespace)
{
ArgumentNullException.ThrowIfNull(type);
XmlTypeMapping xmlMapping = new XmlTypeMapping(_typeScope, ImportElement(_modelScope.GetTypeModel(type), root, defaultNamespace, new RecursionLimiter()));
xmlMapping.SetKeyInternal(XmlMapping.GenerateKey(type, root, defaultNamespace));
xmlMapping.GenerateSerializer = true;
return xmlMapping;
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
[RequiresUnreferencedCode(XmlSerializer.TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public XmlMembersMapping ImportMembersMapping(string? elementName, string? ns, XmlReflectionMember[] members, bool hasWrapperElement)
{
return ImportMembersMapping(elementName, ns, members, hasWrapperElement, false);
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
[RequiresUnreferencedCode(XmlSerializer.TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public XmlMembersMapping ImportMembersMapping(string? elementName, string? ns, XmlReflectionMember[] members, bool hasWrapperElement, bool rpc)
{
return ImportMembersMapping(elementName, ns, members, hasWrapperElement, rpc, false);
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
///
[RequiresUnreferencedCode(XmlSerializer.TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public XmlMembersMapping ImportMembersMapping(string? elementName, string? ns, XmlReflectionMember[] members, bool hasWrapperElement, bool rpc, bool openModel)
{
return ImportMembersMapping(elementName, ns, members, hasWrapperElement, rpc, openModel, XmlMappingAccess.Read | XmlMappingAccess.Write);
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
///
[RequiresUnreferencedCode(XmlSerializer.TrimSerializationWarning)]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
public XmlMembersMapping ImportMembersMapping(string? elementName, string? ns, XmlReflectionMember[] members, bool hasWrapperElement, bool rpc, bool openModel, XmlMappingAccess access)
{
ElementAccessor element = new ElementAccessor();
element.Name = string.IsNullOrEmpty(elementName) ? elementName : XmlConvert.EncodeLocalName(elementName);
element.Namespace = ns;
MembersMapping membersMapping = ImportMembersMapping(members, ns, hasWrapperElement, rpc, openModel, new RecursionLimiter());
element.Mapping = membersMapping;
element.Form = XmlSchemaForm.Qualified; // elements within soap:body are always qualified
if (!rpc)
{
if (hasWrapperElement)
element = (ElementAccessor)ReconcileAccessor(element, _elements);
else
{
foreach (MemberMapping mapping in membersMapping.Members!)
{
if (mapping.Elements != null && mapping.Elements.Length > 0)
{
mapping.Elements[0] = (ElementAccessor)ReconcileAccessor(mapping.Elements[0], _elements);
}
}
}
}
XmlMembersMapping xmlMapping = new XmlMembersMapping(_typeScope, element, access);
xmlMapping.GenerateSerializer = true;
return xmlMapping;
}
private XmlAttributes GetAttributes(Type type, bool canBeSimpleType)
{
XmlAttributes? attrs = _attributeOverrides[type];
if (attrs != null) return attrs;
if (canBeSimpleType && TypeScope.IsKnownType(type))
{
return _defaultAttributes;
}
return new XmlAttributes(type);
}
private XmlAttributes GetAttributes(MemberInfo memberInfo)
{
XmlAttributes? attrs = _attributeOverrides[memberInfo.DeclaringType!, memberInfo.Name];
if (attrs != null) return attrs;
return new XmlAttributes(memberInfo);
}
[RequiresUnreferencedCode("calls ImportTypeMapping")]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
private ElementAccessor ImportElement(TypeModel model, XmlRootAttribute? root, string? defaultNamespace, RecursionLimiter limiter)
{
XmlAttributes a = GetAttributes(model.Type, true);
root ??= a.XmlRoot;
string ns = root?.Namespace ?? defaultNamespace ?? _defaultNs;
_arrayNestingLevel = -1;
_savedArrayItemAttributes = null;
_savedArrayNamespace = null;
ElementAccessor element = CreateElementAccessor(ImportTypeMapping(model, ns, ImportContext.Element, string.Empty, a, limiter), ns);
if (root != null)
{
if (root.ElementName.Length > 0)
element.Name = XmlConvert.EncodeLocalName(root.ElementName);
if (root.GetIsNullableSpecified() && !root.IsNullable && model.TypeDesc.IsOptionalValue)
//XmlInvalidNotNullable=IsNullable may not be set to 'false' for a Nullable<{0}> type. Consider using '{0}' type or removing the IsNullable property from the XmlElement attribute.
throw new InvalidOperationException(SR.Format(SR.XmlInvalidNotNullable, model.TypeDesc.BaseTypeDesc!.FullName, "XmlRoot"));
element.IsNullable = root.GetIsNullableSpecified() ? root.IsNullable : model.TypeDesc.IsNullable || model.TypeDesc.IsOptionalValue;
CheckNullable(element.IsNullable, model.TypeDesc, element.Mapping!);
}
else
element.IsNullable = model.TypeDesc.IsNullable || model.TypeDesc.IsOptionalValue;
element.Form = XmlSchemaForm.Qualified;
return (ElementAccessor)ReconcileAccessor(element, _elements);
}
private static string GetMappingName(Mapping mapping)
{
if (mapping is MembersMapping)
return "(method)";
else if (mapping is TypeMapping)
return ((TypeMapping)mapping).TypeDesc!.FullName;
else
throw new ArgumentException(SR.XmlInternalError, nameof(mapping));
}
private ElementAccessor ReconcileLocalAccessor(ElementAccessor accessor, string? ns)
{
if (accessor.Namespace == ns) return accessor;
return (ElementAccessor)ReconcileAccessor(accessor, _elements);
}
private Accessor ReconcileAccessor(Accessor accessor, NameTable accessors)
{
if (accessor.Any && accessor.Name.Length == 0)
return accessor;
Accessor? existing = (Accessor?)accessors[accessor.Name, accessor.Namespace];
if (existing == null)
{
accessor.IsTopLevelInSchema = true;
accessors.Add(accessor.Name, accessor.Namespace, accessor);
return accessor;
}
if (existing.Mapping == accessor.Mapping)
return existing;
if (!(accessor.Mapping is MembersMapping) && !(existing.Mapping is MembersMapping))
{
if (accessor.Mapping!.TypeDesc == existing.Mapping!.TypeDesc
|| (existing.Mapping is NullableMapping && accessor.Mapping.TypeDesc == ((NullableMapping)existing.Mapping).BaseMapping!.TypeDesc)
|| (accessor.Mapping is NullableMapping && ((NullableMapping)accessor.Mapping).BaseMapping!.TypeDesc == existing.Mapping.TypeDesc))
{
// need to compare default values
string? value1 = Convert.ToString(accessor.Default, CultureInfo.InvariantCulture);
string? value2 = Convert.ToString(existing.Default, CultureInfo.InvariantCulture);
if (value1 == value2)
{
return existing;
}
throw new InvalidOperationException(SR.Format(SR.XmlCannotReconcileAccessorDefault, accessor.Name, accessor.Namespace, value1, value2));
}
}
if (accessor.Mapping is MembersMapping || existing.Mapping is MembersMapping)
throw new InvalidOperationException(SR.Format(SR.XmlMethodTypeNameConflict, accessor.Name, accessor.Namespace));
if (accessor.Mapping is ArrayMapping)
{
if (!(existing.Mapping is ArrayMapping))
{
throw new InvalidOperationException(SR.Format(SR.XmlCannotReconcileAccessor, accessor.Name, accessor.Namespace, GetMappingName(existing.Mapping!), GetMappingName(accessor.Mapping)));
}
ArrayMapping mapping = (ArrayMapping)accessor.Mapping;
ArrayMapping? existingMapping = mapping.IsAnonymousType ? null : (ArrayMapping?)_types[existing.Mapping.TypeName!, existing.Mapping.Namespace];
ArrayMapping? first = existingMapping;
while (existingMapping != null)
{
if (existingMapping == accessor.Mapping)
return existing;
existingMapping = existingMapping.Next;
}
mapping.Next = first;
if (!mapping.IsAnonymousType)
_types[existing.Mapping.TypeName!, existing.Mapping.Namespace] = mapping;
return existing;
}
if (accessor is AttributeAccessor)
throw new InvalidOperationException(SR.Format(SR.XmlCannotReconcileAttributeAccessor, accessor.Name, accessor.Namespace, GetMappingName(existing.Mapping!), GetMappingName(accessor.Mapping!)));
else
throw new InvalidOperationException(SR.Format(SR.XmlCannotReconcileAccessor, accessor.Name, accessor.Namespace, GetMappingName(existing.Mapping!), GetMappingName(accessor.Mapping!)));
}
private static InvalidOperationException CreateReflectionException(string context, Exception e)
{
return new InvalidOperationException(SR.Format(SR.XmlReflectionError, context), e);
}
private static InvalidOperationException CreateTypeReflectionException(string context, Exception e)
{
return new InvalidOperationException(SR.Format(SR.XmlTypeReflectionError, context), e);
}
private static InvalidOperationException CreateMemberReflectionException(FieldModel model, Exception e)
{
return new InvalidOperationException(SR.Format(model.IsProperty ? SR.XmlPropertyReflectionError : SR.XmlFieldReflectionError, model.Name), e);
}
[RequiresUnreferencedCode("calls ImportTypeMapping")]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
private TypeMapping ImportTypeMapping(TypeModel model, string? ns, ImportContext context, string dataType, XmlAttributes? a, RecursionLimiter limiter)
{
return ImportTypeMapping(model, ns, context, dataType, a, false, false, limiter);
}
[RequiresUnreferencedCode("calls ImportEnumMapping")]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
private TypeMapping ImportTypeMapping(TypeModel model, string? ns, ImportContext context, string dataType, XmlAttributes? a, bool repeats, bool openModel, RecursionLimiter limiter)
{
try
{
if (dataType.Length > 0)
{
TypeDesc modelTypeDesc = TypeScope.IsOptionalValue(model.Type) ? model.TypeDesc.BaseTypeDesc! : model.TypeDesc;
if (!modelTypeDesc.IsPrimitive)
{
throw new InvalidOperationException(SR.Format(SR.XmlInvalidDataTypeUsage, dataType, "XmlElementAttribute.DataType"));
}
TypeDesc? td = TypeScope.GetTypeDesc(dataType, XmlSchema.Namespace);
if (td == null)
{
throw new InvalidOperationException(SR.Format(SR.XmlInvalidXsdDataType, dataType, "XmlElementAttribute.DataType", new XmlQualifiedName(dataType, XmlSchema.Namespace).ToString()));
}
if (modelTypeDesc.FullName != td.FullName)
{
throw new InvalidOperationException(SR.Format(SR.XmlDataTypeMismatch, dataType, "XmlElementAttribute.DataType", modelTypeDesc.FullName));
}
}
a ??= GetAttributes(model.Type, false);
if ((a.XmlFlags & ~(XmlAttributeFlags.Type | XmlAttributeFlags.Root)) != 0)
throw new InvalidOperationException(SR.Format(SR.XmlInvalidTypeAttributes, model.Type.FullName));
switch (model.TypeDesc.Kind)
{
case TypeKind.Enum:
return ImportEnumMapping((EnumModel)model, ns, repeats);
case TypeKind.Primitive:
if (a.XmlFlags != 0) throw InvalidAttributeUseException(model.Type);
return ImportPrimitiveMapping((PrimitiveModel)model, context, dataType, repeats);
case TypeKind.Array:
case TypeKind.Collection:
case TypeKind.Enumerable:
//if (a.XmlFlags != 0) throw InvalidAttributeUseException(model.Type);
if (context != ImportContext.Element) throw UnsupportedException(model.TypeDesc, context);
_arrayNestingLevel++;
ArrayMapping arrayMapping = ImportArrayLikeMapping((ArrayModel)model, ns, limiter);
_arrayNestingLevel--;
return arrayMapping;
case TypeKind.Root:
case TypeKind.Class:
case TypeKind.Struct:
if (context != ImportContext.Element) throw UnsupportedException(model.TypeDesc, context);
if (model.TypeDesc.IsOptionalValue)
{
TypeDesc valueTypeDesc = string.IsNullOrEmpty(dataType) ? model.TypeDesc.BaseTypeDesc! : TypeScope.GetTypeDesc(dataType, XmlSchema.Namespace)!;
string? xsdTypeName = valueTypeDesc.DataType == null ? valueTypeDesc.Name : valueTypeDesc.DataType.Name;
TypeMapping baseMapping =
GetTypeMapping(xsdTypeName, ns, valueTypeDesc, _types, null) ??
ImportTypeMapping(_modelScope.GetTypeModel(model.TypeDesc.BaseTypeDesc!.Type!), ns, context, dataType, null, repeats, openModel, limiter);
return CreateNullableMapping(baseMapping, model.TypeDesc.Type!);
}
else
{
return ImportStructLikeMapping((StructModel)model, ns, openModel, a, limiter);
}
default:
if (model.TypeDesc.Kind == TypeKind.Serializable)
{
// We allow XmlRoot attribute on IXmlSerializable, but not others
if ((a.XmlFlags & ~XmlAttributeFlags.Root) != 0)
{
throw new InvalidOperationException(SR.Format(SR.XmlSerializableAttributes, model.TypeDesc.FullName, nameof(XmlSchemaProviderAttribute)));
}
}
else
{
if (a.XmlFlags != 0) throw InvalidAttributeUseException(model.Type);
}
if (model.TypeDesc.IsSpecial)
return ImportSpecialMapping(model.Type, model.TypeDesc, ns, context);
throw UnsupportedException(model.TypeDesc, context);
}
}
catch (Exception e)
{
if (e is OutOfMemoryException)
{
throw;
}
throw CreateTypeReflectionException(model.TypeDesc.FullName, e);
}
}
internal static MethodInfo? GetMethodFromSchemaProvider(XmlSchemaProviderAttribute provider,
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicMethods)] Type type)
{
if (provider.IsAny)
{
// do not validate the schema provider method for wildcard types.
return null;
}
ArgumentNullException.ThrowIfNull(provider.MethodName, nameof(provider.MethodName));
if (!CSharpHelpers.IsValidLanguageIndependentIdentifier(provider.MethodName))
throw new ArgumentException(SR.Format(SR.XmlGetSchemaMethodName, provider.MethodName), nameof(provider.MethodName));
MethodInfo? getMethod = getMethod = type.GetMethod(provider.MethodName, /* BindingFlags.DeclaredOnly | */ BindingFlags.Static | BindingFlags.Public, new Type[] { typeof(XmlSchemaSet) });
if (getMethod == null)
throw new InvalidOperationException(SR.Format(SR.XmlGetSchemaMethodMissing, provider.MethodName, nameof(XmlSchemaSet), type.FullName));
if (!(typeof(XmlQualifiedName).IsAssignableFrom(getMethod.ReturnType)) && !(typeof(XmlSchemaType).IsAssignableFrom(getMethod.ReturnType)))
throw new InvalidOperationException(SR.Format(SR.XmlGetSchemaMethodReturnType, type.Name, provider.MethodName, nameof(XmlSchemaProviderAttribute), typeof(XmlQualifiedName).FullName, typeof(XmlSchemaType).FullName));
return getMethod;
}
[RequiresUnreferencedCode("calls IncludeTypes")]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
private SpecialMapping ImportSpecialMapping(Type type, TypeDesc typeDesc, string? ns, ImportContext context)
{
_specials ??= new Hashtable();
SpecialMapping? mapping = (SpecialMapping?)_specials[type];
if (mapping != null)
{
CheckContext(mapping.TypeDesc!, context);
return mapping;
}
if (typeDesc.Kind == TypeKind.Serializable)
{
SerializableMapping? serializableMapping;
// get the schema method info
object[] attrs = type.GetCustomAttributes(typeof(XmlSchemaProviderAttribute), false);
if (attrs.Length > 0)
{
// new IXmlSerializable
XmlSchemaProviderAttribute provider = (XmlSchemaProviderAttribute)attrs[0];
MethodInfo method = GetMethodFromSchemaProvider(provider, type)!;
serializableMapping = new SerializableMapping(method, provider.IsAny, ns);
XmlQualifiedName? qname = serializableMapping.XsiType;
if (qname != null && !qname.IsEmpty)
{
_serializables ??= new NameTable();
SerializableMapping? existingMapping = (SerializableMapping?)_serializables[qname];
if (existingMapping != null)
{
if (existingMapping.Type == null)
{
serializableMapping = existingMapping;
}
else if (existingMapping.Type != type)
{
SerializableMapping? next = existingMapping.Next;
existingMapping.Next = serializableMapping;
serializableMapping.Next = next;
}
}
else
{
XmlSchemaType? xsdType = serializableMapping.XsdType;
if (xsdType != null)
SetBase(serializableMapping, xsdType.DerivedFrom);
_serializables[qname] = serializableMapping;
}
serializableMapping.TypeName = qname.Name;
serializableMapping.Namespace = qname.Namespace;
}
serializableMapping.TypeDesc = typeDesc;
serializableMapping.Type = type;
IncludeTypes(type);
}
else
{
// old IXmlSerializable
serializableMapping = new SerializableMapping();
serializableMapping.TypeDesc = typeDesc;
serializableMapping.Type = type;
}
mapping = serializableMapping;
}
else
{
mapping = new SpecialMapping();
mapping.TypeDesc = typeDesc;
}
CheckContext(typeDesc, context);
_specials.Add(type, mapping);
_typeScope.AddTypeMapping(mapping);
return mapping;
}
internal void SetBase(SerializableMapping mapping, XmlQualifiedName baseQname)
{
if (baseQname.IsEmpty) return;
if (baseQname.Namespace == XmlSchema.Namespace) return;
XmlSchemaSet schemas = mapping.Schemas!;
ArrayList srcSchemas = (ArrayList)schemas.Schemas(baseQname.Namespace);
if (srcSchemas.Count == 0)
{
throw new InvalidOperationException(SR.Format(SR.XmlMissingSchema, baseQname.Namespace));
}
if (srcSchemas.Count > 1)
{
throw new InvalidOperationException(SR.Format(SR.XmlGetSchemaInclude, baseQname.Namespace, nameof(IXmlSerializable), "GetSchema"));
}
XmlSchema s = (XmlSchema)srcSchemas[0]!;
XmlSchemaType t = (XmlSchemaType)s.SchemaTypes[baseQname]!;
t = t.Redefined ?? t;
if (_serializables![baseQname] == null)
{
SerializableMapping baseMapping = new SerializableMapping(baseQname, schemas);
SetBase(baseMapping, t.DerivedFrom);
_serializables.Add(baseQname, baseMapping);
}
mapping.SetBaseMapping((SerializableMapping?)_serializables[baseQname]);
}
private static string GetContextName(ImportContext context) =>
context switch
{
ImportContext.Element => "element",
ImportContext.Attribute => "attribute",
ImportContext.Text => "text",
_ => throw new ArgumentException(SR.XmlInternalError, nameof(context)),
};
private static InvalidOperationException InvalidAttributeUseException(Type type)
{
return new InvalidOperationException(SR.Format(SR.XmlInvalidAttributeUse, type.FullName));
}
private static InvalidOperationException UnsupportedException(TypeDesc typeDesc, ImportContext context)
{
return new InvalidOperationException(SR.Format(SR.XmlIllegalTypeContext, typeDesc.FullName, GetContextName(context)));
}
[RequiresUnreferencedCode("calls GetTypeDesc")]
private StructMapping CreateRootMapping()
{
TypeDesc typeDesc = _typeScope.GetTypeDesc(typeof(object));
StructMapping mapping = new StructMapping();
mapping.TypeDesc = typeDesc;
mapping.TypeName = Soap.UrType;
mapping.Namespace = XmlSchema.Namespace;
mapping.Members = Array.Empty<MemberMapping>();
mapping.IncludeInSchema = false;
return mapping;
}
private NullableMapping CreateNullableMapping(TypeMapping baseMapping,
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.All)] Type type)
{
TypeDesc typeDesc = baseMapping.TypeDesc!.GetNullableTypeDesc(type);
TypeMapping? existingMapping;
if (!baseMapping.IsAnonymousType)
{
existingMapping = (TypeMapping?)_nullables[baseMapping.TypeName!, baseMapping.Namespace];
}
else
{
existingMapping = (TypeMapping?)_anonymous[type];
}
NullableMapping mapping;
if (existingMapping != null)
{
if (existingMapping is NullableMapping)
{
mapping = (NullableMapping)existingMapping;
if (mapping.BaseMapping is PrimitiveMapping && baseMapping is PrimitiveMapping)
return mapping;
else if (mapping.BaseMapping == baseMapping)
{
return mapping;
}
else
{
throw new InvalidOperationException(SR.Format(SR.XmlTypesDuplicate, typeDesc.FullName, existingMapping.TypeDesc!.FullName, typeDesc.Name, existingMapping.Namespace));
}
}
else
{
throw new InvalidOperationException(SR.Format(SR.XmlTypesDuplicate, typeDesc.FullName, existingMapping.TypeDesc!.FullName, typeDesc.Name, existingMapping.Namespace));
}
}
mapping = new NullableMapping();
mapping.BaseMapping = baseMapping;
mapping.TypeDesc = typeDesc;
mapping.TypeName = baseMapping.TypeName;
mapping.Namespace = baseMapping.Namespace;
mapping.IncludeInSchema = baseMapping.IncludeInSchema;
if (!baseMapping.IsAnonymousType)
{
_nullables.Add(baseMapping.TypeName, baseMapping.Namespace, mapping);
}
else
{
_anonymous[type] = mapping;
}
_typeScope.AddTypeMapping(mapping);
return mapping;
}
[RequiresUnreferencedCode("calls CreateRootMapping")]
private StructMapping GetRootMapping()
{
if (_root == null)
{
_root = CreateRootMapping();
_typeScope.AddTypeMapping(_root);
}
return _root;
}
private TypeMapping? GetTypeMapping(string? typeName, string? ns, TypeDesc typeDesc, NameTable typeLib, Type? type)
{
TypeMapping? mapping;
if (string.IsNullOrEmpty(typeName))
mapping = type == null ? null : (TypeMapping?)_anonymous[type];
else
mapping = (TypeMapping?)typeLib[typeName, ns];
if (mapping == null) return null;
if (!mapping.IsAnonymousType && mapping.TypeDesc != typeDesc)
throw new InvalidOperationException(SR.Format(SR.XmlTypesDuplicate, typeDesc.FullName, mapping.TypeDesc!.FullName, typeName, ns));
return mapping;
}
[RequiresUnreferencedCode("calls GetRootMapping")]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
private StructMapping ImportStructLikeMapping(StructModel model, string? ns, bool openModel, XmlAttributes? a, RecursionLimiter limiter)
{
if (model.TypeDesc.Kind == TypeKind.Root) return GetRootMapping();
a ??= GetAttributes(model.Type, false);
string? typeNs = ns;
if (a.XmlType != null && a.XmlType.Namespace != null)
typeNs = a.XmlType.Namespace;
else if (a.XmlRoot != null && a.XmlRoot.Namespace != null)
typeNs = a.XmlRoot.Namespace;
string? typeName = IsAnonymousType(a, ns) ? null : XsdTypeName(model.Type, a, model.TypeDesc.Name);
typeName = XmlConvert.EncodeLocalName(typeName);
StructMapping? mapping = (StructMapping?)GetTypeMapping(typeName, typeNs, model.TypeDesc, _types, model.Type);
if (mapping == null)
{
mapping = new StructMapping();
mapping.TypeDesc = model.TypeDesc;
mapping.Namespace = typeNs;
mapping.TypeName = typeName;
if (!mapping.IsAnonymousType)
_types.Add(typeName, typeNs, mapping);
else
_anonymous[model.Type] = mapping;
if (a.XmlType != null)
{
mapping.IncludeInSchema = a.XmlType.IncludeInSchema;
}
if (limiter.IsExceededLimit)
{
limiter.DeferredWorkItems.Add(new ImportStructWorkItem(model, mapping));
return mapping;
}
limiter.Depth++;
InitializeStructMembers(mapping, model, openModel, typeName, limiter);
while (limiter.DeferredWorkItems.Count > 0)
{
int index = limiter.DeferredWorkItems.Count - 1;
ImportStructWorkItem item = limiter.DeferredWorkItems[index];
if (InitializeStructMembers(item.Mapping, item.Model, openModel, typeName, limiter))
{
//
// if InitializeStructMembers returns true, then there were *no* changes to the DeferredWorkItems
//
#if DEBUG
// use exception in the place of Debug.Assert to avoid throwing asserts from a server process such as aspnet_ewp.exe
if (index != limiter.DeferredWorkItems.Count - 1)
throw new InvalidOperationException(SR.Format(SR.XmlInternalErrorDetails, "DeferredWorkItems.Count have changed"));
if (item != limiter.DeferredWorkItems[index])
throw new InvalidOperationException(SR.Format(SR.XmlInternalErrorDetails, "DeferredWorkItems.Top have changed"));
#endif
// Remove the last work item
limiter.DeferredWorkItems.RemoveAt(index);
}
}
limiter.Depth--;
}
return mapping;
}
[RequiresUnreferencedCode("calls GetTypeModel")]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
private bool InitializeStructMembers(StructMapping mapping, StructModel model, bool openModel, string? typeName, RecursionLimiter limiter)
{
if (mapping.IsFullyInitialized)
return true;
if (model.TypeDesc.BaseTypeDesc != null)
{
TypeModel baseModel = _modelScope.GetTypeModel(model.Type.BaseType!, false);
if (!(baseModel is StructModel))
{
//XmlUnsupportedInheritance=Using '{0}' as a base type for a class is not supported by XmlSerializer.
throw new NotSupportedException(SR.Format(SR.XmlUnsupportedInheritance, model.Type.BaseType!.FullName));
}
StructMapping baseMapping = ImportStructLikeMapping((StructModel)baseModel, mapping.Namespace, openModel, null, limiter);
// check to see if the import of the baseMapping was deferred
int baseIndex = limiter.DeferredWorkItems.IndexOf(baseMapping);
if (baseIndex < 0)
{
mapping.BaseMapping = baseMapping;
ICollection values = mapping.BaseMapping.LocalAttributes.Values;
foreach (AttributeAccessor attribute in values)
{
AddUniqueAccessor(mapping.LocalAttributes, attribute);
}
if (!mapping.BaseMapping.HasExplicitSequence())
{
values = mapping.BaseMapping.LocalElements.Values;
foreach (ElementAccessor e in values)
{
AddUniqueAccessor(mapping.LocalElements, e);
}
}
}
else
{
// the import of the baseMapping was deferred, make sure that the derived mappings is deferred as well
if (!limiter.DeferredWorkItems.Contains(mapping))
{
limiter.DeferredWorkItems.Add(new ImportStructWorkItem(model, mapping));
}
// make sure that baseMapping get processed before the derived
int top = limiter.DeferredWorkItems.Count - 1;
if (baseIndex < top)
{
ImportStructWorkItem baseMappingWorkItem = limiter.DeferredWorkItems[baseIndex];
limiter.DeferredWorkItems[baseIndex] = limiter.DeferredWorkItems[top];
limiter.DeferredWorkItems[top] = baseMappingWorkItem;
}
return false;
}
}
var members = new List<MemberMapping>();
TextAccessor? textAccessor = null;
bool hasElements = false;
bool isSequence = false;
foreach (MemberInfo memberInfo in model.GetMemberInfos())
{
if (!(memberInfo is FieldInfo || memberInfo is PropertyInfo))
continue;
XmlAttributes memberAttrs = GetAttributes(memberInfo);
if (memberAttrs.XmlIgnore) continue;
FieldModel? fieldModel = model.GetFieldModel(memberInfo);
if (fieldModel == null) continue;
try
{
MemberMapping? member = ImportFieldMapping(model, fieldModel, memberAttrs, mapping.Namespace, limiter);
if (member == null) continue;
if (mapping.BaseMapping != null)
{
if (mapping.BaseMapping.Declares(member, mapping.TypeName)) continue;
}
isSequence |= member.IsSequence;
// add All member accessors to the scope accessors
AddUniqueAccessor(member, mapping.LocalElements, mapping.LocalAttributes, isSequence);
if (member.Text != null)
{
if (!member.Text.Mapping!.TypeDesc!.CanBeTextValue && member.Text.Mapping.IsList)
throw new InvalidOperationException(SR.Format(SR.XmlIllegalTypedTextAttribute, typeName, member.Text.Name, member.Text.Mapping.TypeDesc.FullName));
if (textAccessor != null)
{
throw new InvalidOperationException(SR.Format(SR.XmlIllegalMultipleText, model.Type.FullName));
}
textAccessor = member.Text;
}
if (member.Xmlns != null)
{
if (mapping.XmlnsMember != null)
throw new InvalidOperationException(SR.Format(SR.XmlMultipleXmlns, model.Type.FullName));
mapping.XmlnsMember = member;
}
if (member.Elements != null && member.Elements.Length != 0)
{
hasElements = true;
}
members.Add(member);
}
catch (Exception e)
{
if (e is OutOfMemoryException)
{
throw;
}
throw CreateMemberReflectionException(fieldModel, e);
}
}
mapping.SetContentModel(textAccessor, hasElements);
if (isSequence)
{
Hashtable ids = new Hashtable();
for (int i = 0; i < members.Count; i++)
{
MemberMapping member = members[i]!;
if (!member.IsParticle)
continue;
if (member.IsSequence)
{
if (ids[member.SequenceId] != null)
{
throw new InvalidOperationException(SR.Format(SR.XmlSequenceUnique, member.SequenceId.ToString(CultureInfo.InvariantCulture), "Order", member.Name));
}
ids[member.SequenceId] = member;
}
else
{
throw new InvalidOperationException(SR.Format(SR.XmlSequenceInconsistent, "Order", member.Name));
}
}
members.Sort(new MemberMappingComparer());
}
mapping.Members = members.ToArray();
mapping.BaseMapping ??= GetRootMapping();
if (mapping.XmlnsMember != null && mapping.BaseMapping.HasXmlnsMember)
throw new InvalidOperationException(SR.Format(SR.XmlMultipleXmlns, model.Type.FullName));
IncludeTypes(model.Type, limiter);
_typeScope.AddTypeMapping(mapping);
if (openModel)
mapping.IsOpenModel = true;
return true;
}
private static bool IsAnonymousType(XmlAttributes a, string? contextNs)
{
if (a.XmlType != null && a.XmlType.AnonymousType)
{
//
// check to see if the anonymous type is used in the original context
// only treat it as Anonymous, if the referencing element's namespace
// matches the original referencing element, otherwise revert to
// non-Anonymous handling for backward compatibility.
//
string? originalNs = a.XmlType.Namespace;
return string.IsNullOrEmpty(originalNs) || originalNs == contextNs;
}
return false;
}
[RequiresUnreferencedCode("calls GetTypeDesc")]
internal string XsdTypeName(Type type)
{
if (type == typeof(object)) return Soap.UrType;
TypeDesc typeDesc = _typeScope.GetTypeDesc(type);
if (typeDesc.IsPrimitive && typeDesc.DataType != null && typeDesc.DataType.Name != null && typeDesc.DataType.Name.Length > 0)
return typeDesc.DataType.Name;
return XsdTypeName(type, GetAttributes(type, false), typeDesc.Name);
}
[RequiresUnreferencedCode("Calls XsdTypeName")]
internal string XsdTypeName(Type type, XmlAttributes a, string name)
{
string typeName = name;
if (a.XmlType != null && a.XmlType.TypeName.Length > 0)
typeName = a.XmlType.TypeName;
if (type.IsGenericType && typeName.Contains('{'))
{
Type genType = type.GetGenericTypeDefinition();
Type[] names = genType.GetGenericArguments();
Type[] types = type.GetGenericArguments();
for (int i = 0; i < names.Length; i++)
{
string argument = $"{{{names[i]}}}";
if (typeName.Contains(argument))
{
typeName = typeName.Replace(argument, XsdTypeName(types[i]));
if (!typeName.Contains('{'))
{
break;
}
}
}
}
return typeName;
}
private static int CountAtLevel(XmlArrayItemAttributes attributes, int level)
{
int sum = 0;
for (int i = 0; i < attributes.Count; i++)
if (attributes[i]!.NestingLevel == level) sum++;
return sum;
}
[RequiresUnreferencedCode("calls XsdTypeName")]
private void SetArrayMappingType(ArrayMapping mapping, string? defaultNs, Type type)
{
XmlAttributes a = GetAttributes(type, false);
bool isAnonymous = IsAnonymousType(a, defaultNs);
if (isAnonymous)
{
mapping.TypeName = null;
mapping.Namespace = defaultNs;
return;
}
string? name;
string? ns;
TypeMapping? itemTypeMapping;
ElementAccessor? element = null;
if (mapping.Elements!.Length == 1)
{
element = mapping.Elements[0];
itemTypeMapping = element.Mapping;
}
else
{
itemTypeMapping = null;
}
bool generateTypeName = true;
if (a.XmlType != null)
{
ns = a.XmlType.Namespace;
name = XsdTypeName(type, a, a.XmlType.TypeName);
name = XmlConvert.EncodeLocalName(name);
generateTypeName = name == null;
}
else if (itemTypeMapping is EnumMapping)
{
ns = itemTypeMapping.Namespace;
name = itemTypeMapping.DefaultElementName;
}
else if (itemTypeMapping is PrimitiveMapping)
{
ns = defaultNs;
name = itemTypeMapping.TypeDesc!.DataType!.Name;
}
else if (itemTypeMapping is StructMapping && itemTypeMapping.TypeDesc!.IsRoot)
{
ns = defaultNs;
name = Soap.UrType;
}
else if (itemTypeMapping != null)
{
ns = itemTypeMapping.Namespace == XmlSchema.Namespace ? defaultNs : itemTypeMapping.Namespace;
name = itemTypeMapping.DefaultElementName;
}
else
{
ns = defaultNs;
name = $"Choice{(_choiceNum++)}";
}
name ??= "Any";
if (element != null)
ns = element.Namespace;
ns ??= defaultNs;
string uniqueName = name = generateTypeName ? $"ArrayOf{CodeIdentifier.MakePascal(name)}" : name;
int i = 1;
TypeMapping? existingMapping = (TypeMapping?)_types[uniqueName, ns];
while (existingMapping != null)
{
if (existingMapping is ArrayMapping arrayMapping)
{
if (AccessorMapping.ElementsMatch(arrayMapping.Elements, mapping.Elements))
{
break;
}
}
// need to re-name the mapping
uniqueName = name + i.ToString(CultureInfo.InvariantCulture);
existingMapping = (TypeMapping?)_types[uniqueName, ns];
i++;
}
mapping.TypeName = uniqueName;
mapping.Namespace = ns;
}
[RequiresUnreferencedCode("calls SetArrayMappingType")]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
private ArrayMapping ImportArrayLikeMapping(ArrayModel model, string? ns, RecursionLimiter limiter)
{
ArrayMapping mapping = new ArrayMapping();
mapping.TypeDesc = model.TypeDesc;
_savedArrayItemAttributes ??= new XmlArrayItemAttributes();
if (CountAtLevel(_savedArrayItemAttributes, _arrayNestingLevel) == 0)
_savedArrayItemAttributes.Add(CreateArrayItemAttribute(_arrayNestingLevel));
CreateArrayElementsFromAttributes(mapping, _savedArrayItemAttributes, model.Element.Type, _savedArrayNamespace ?? ns, limiter);
SetArrayMappingType(mapping, ns, model.Type);
// reconcile accessors now that we have the ArrayMapping namespace
for (int i = 0; i < mapping.Elements!.Length; i++)
{
mapping.Elements[i] = ReconcileLocalAccessor(mapping.Elements[i], mapping.Namespace);
}
IncludeTypes(model.Type);
// in the case of an ArrayMapping we can have more that one mapping correspond to a type
// examples of that are ArrayList and object[] both will map tp ArrayOfur-type
// so we create a link list for all mappings of the same XSD type
ArrayMapping? existingMapping = (ArrayMapping?)_types[mapping.TypeName, mapping.Namespace];
if (existingMapping != null)
{
ArrayMapping? first = existingMapping;
while (existingMapping != null)
{
if (existingMapping.TypeDesc == model.TypeDesc)
return existingMapping;
existingMapping = existingMapping.Next;
}
mapping.Next = first;
if (!mapping.IsAnonymousType)
_types[mapping.TypeName, mapping.Namespace] = mapping;
else
_anonymous[model.Type] = mapping;
return mapping;
}
_typeScope.AddTypeMapping(mapping);
if (!mapping.IsAnonymousType)
_types.Add(mapping.TypeName, mapping.Namespace, mapping);
else
_anonymous[model.Type] = mapping;
return mapping;
}
private static void CheckContext(TypeDesc typeDesc, ImportContext context)
{
switch (context)
{
case ImportContext.Element:
if (typeDesc.CanBeElementValue) return;
break;
case ImportContext.Attribute:
if (typeDesc.CanBeAttributeValue) return;
break;
case ImportContext.Text:
if (typeDesc.CanBeTextValue || typeDesc.IsEnum || typeDesc.IsPrimitive)
return;
break;
default:
throw new ArgumentException(SR.XmlInternalError, nameof(context));
}
throw UnsupportedException(typeDesc, context);
}
private static PrimitiveMapping ImportPrimitiveMapping(PrimitiveModel model, ImportContext context, string dataType, bool repeats)
{
PrimitiveMapping mapping = new PrimitiveMapping();
if (dataType.Length > 0)
{
mapping.TypeDesc = TypeScope.GetTypeDesc(dataType, XmlSchema.Namespace);
if (mapping.TypeDesc == null)
{
// try it as a non-Xsd type
mapping.TypeDesc = TypeScope.GetTypeDesc(dataType, UrtTypes.Namespace);
if (mapping.TypeDesc == null)
{
throw new InvalidOperationException(SR.Format(SR.XmlUdeclaredXsdType, dataType));
}
}
}
else
{
mapping.TypeDesc = model.TypeDesc;
}
mapping.TypeName = mapping.TypeDesc.DataType!.Name;
mapping.Namespace = mapping.TypeDesc.IsXsdType ? XmlSchema.Namespace : UrtTypes.Namespace;
mapping.IsList = repeats;
CheckContext(mapping.TypeDesc, context);
return mapping;
}
[RequiresUnreferencedCode("calls XsdTypeName")]
private EnumMapping ImportEnumMapping(EnumModel model, string? ns, bool repeats)
{
XmlAttributes a = GetAttributes(model.Type, false);
string? typeNs = ns;
if (a.XmlType != null && a.XmlType.Namespace != null)
typeNs = a.XmlType.Namespace;
string? typeName = IsAnonymousType(a, ns) ? null : XsdTypeName(model.Type, a, model.TypeDesc.Name);
typeName = XmlConvert.EncodeLocalName(typeName);
EnumMapping? mapping = (EnumMapping?)GetTypeMapping(typeName, typeNs, model.TypeDesc, _types, model.Type);
if (mapping == null)
{
mapping = new EnumMapping();
mapping.TypeDesc = model.TypeDesc;
mapping.TypeName = typeName;
mapping.Namespace = typeNs;
mapping.IsFlags = model.Type.IsDefined(typeof(FlagsAttribute), false);
if (mapping.IsFlags && repeats)
throw new InvalidOperationException(SR.Format(SR.XmlIllegalAttributeFlagsArray, model.TypeDesc.FullName));
mapping.IsList = repeats;
mapping.IncludeInSchema = a.XmlType == null ? true : a.XmlType.IncludeInSchema;
if (!mapping.IsAnonymousType)
_types.Add(typeName, typeNs, mapping);
else
_anonymous[model.Type] = mapping;
var constants = new List<ConstantMapping>();
for (int i = 0; i < model.Constants.Length; i++)
{
ConstantMapping? constant = ImportConstantMapping(model.Constants[i]);
if (constant != null) constants.Add(constant);
}
if (constants.Count == 0)
{
throw new InvalidOperationException(SR.Format(SR.XmlNoSerializableMembers, model.TypeDesc.FullName));
}
mapping.Constants = constants.ToArray();
_typeScope.AddTypeMapping(mapping);
}
return mapping;
}
private ConstantMapping? ImportConstantMapping(ConstantModel model)
{
XmlAttributes a = GetAttributes(model.FieldInfo);
if (a.XmlIgnore) return null;
if ((a.XmlFlags & ~XmlAttributeFlags.Enum) != 0)
throw new InvalidOperationException(SR.XmlInvalidConstantAttribute);
a.XmlEnum ??= new XmlEnumAttribute();
ConstantMapping constant = new ConstantMapping();
constant.XmlName = a.XmlEnum.Name ?? model.Name;
constant.Name = model.Name;
constant.Value = model.Value;
return constant;
}
[RequiresUnreferencedCode("calls GetTypeDesc")]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
private MembersMapping ImportMembersMapping(XmlReflectionMember[] xmlReflectionMembers, string? ns, bool hasWrapperElement, bool rpc, bool openModel, RecursionLimiter limiter)
{
MembersMapping members = new MembersMapping();
members.TypeDesc = _typeScope.GetTypeDesc(typeof(object[]));
MemberMapping[] mappings = new MemberMapping[xmlReflectionMembers.Length];
NameTable elements = new NameTable();
NameTable attributes = new NameTable();
TextAccessor? textAccessor = null;
bool isSequence = false;
for (int i = 0; i < mappings.Length; i++)
{
try
{
MemberMapping mapping = ImportMemberMapping(xmlReflectionMembers[i], ns, xmlReflectionMembers, rpc, openModel, limiter);
if (!hasWrapperElement)
{
if (mapping.Attribute != null)
{
if (rpc)
{
throw new InvalidOperationException(SR.XmlRpcLitAttributeAttributes);
}
else
{
throw new InvalidOperationException(SR.Format(SR.XmlInvalidAttributeType, "XmlAttribute"));
}
}
}
if (rpc && xmlReflectionMembers[i].IsReturnValue)
{
if (i > 0) throw new InvalidOperationException(SR.XmlInvalidReturnPosition);
mapping.IsReturnValue = true;
}
mappings[i] = mapping;
isSequence |= mapping.IsSequence;
if (!xmlReflectionMembers[i].XmlAttributes.XmlIgnore)
{
// add All member accessors to the scope accessors
AddUniqueAccessor(mapping, elements, attributes, isSequence);
}
mappings[i] = mapping;
if (mapping.Text != null)
{
if (textAccessor != null)
{
throw new InvalidOperationException(SR.XmlIllegalMultipleTextMembers);
}
textAccessor = mapping.Text;
}
if (mapping.Xmlns != null)
{
if (members.XmlnsMember != null)
throw new InvalidOperationException(SR.XmlMultipleXmlnsMembers);
members.XmlnsMember = mapping;
}
}
catch (Exception e)
{
if (e is OutOfMemoryException)
{
throw;
}
throw CreateReflectionException(xmlReflectionMembers[i].MemberName, e);
}
}
if (isSequence)
{
throw new InvalidOperationException(SR.Format(SR.XmlSequenceMembers, "Order"));
}
members.Members = mappings;
members.HasWrapperElement = hasWrapperElement;
return members;
}
[RequiresUnreferencedCode("Calls TypeScope.GetTypeDesc(Type) and XmlReflectionImporter.ImportAccessorMapping both of which RequireUnreferencedCode")]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
private MemberMapping ImportMemberMapping(XmlReflectionMember xmlReflectionMember, string? ns, XmlReflectionMember[] xmlReflectionMembers, bool rpc, bool openModel, RecursionLimiter limiter)
{
XmlSchemaForm form = rpc ? XmlSchemaForm.Unqualified : XmlSchemaForm.Qualified;
XmlAttributes a = xmlReflectionMember.XmlAttributes;
TypeDesc typeDesc = _typeScope.GetTypeDesc(xmlReflectionMember.MemberType!);
if (a.XmlFlags == 0)
{
if (typeDesc.IsArrayLike)
{
XmlArrayAttribute xmlArray = CreateArrayAttribute();
xmlArray.ElementName = xmlReflectionMember.MemberName;
xmlArray.Namespace = rpc ? null : ns;
xmlArray.Form = form;
a.XmlArray = xmlArray;
}
else
{
XmlElementAttribute xmlElement = CreateElementAttribute(typeDesc);
// If there is no metadata specified on a parameter, then see if someone used
// an XmlRoot attribute on the struct or class.
if (typeDesc.IsStructLike)
{
XmlAttributes structAttrs = new XmlAttributes(xmlReflectionMember.MemberType!);
if (structAttrs.XmlRoot != null)
{
if (structAttrs.XmlRoot.ElementName.Length > 0)
xmlElement.ElementName = structAttrs.XmlRoot.ElementName;
if (rpc)
{
xmlElement.Namespace = null;
if (structAttrs.XmlRoot.GetIsNullableSpecified())
xmlElement.IsNullable = structAttrs.XmlRoot.IsNullable;
}
else
{
xmlElement.Namespace = structAttrs.XmlRoot.Namespace;
xmlElement.IsNullable = structAttrs.XmlRoot.IsNullable;
}
}
}
if (xmlElement.ElementName.Length == 0)
xmlElement.ElementName = xmlReflectionMember.MemberName;
if (xmlElement.Namespace == null && !rpc)
xmlElement.Namespace = ns;
xmlElement.Form = form;
a.XmlElements.Add(xmlElement);
}
}
else if (a.XmlRoot != null)
{
CheckNullable(a.XmlRoot.IsNullable, typeDesc, null);
}
MemberMapping member = new MemberMapping();
member.Name = xmlReflectionMember.MemberName;
bool checkSpecified = FindSpecifiedMember(xmlReflectionMember.MemberName, xmlReflectionMembers) != null;
FieldModel model = new FieldModel(xmlReflectionMember.MemberName, xmlReflectionMember.MemberType!, _typeScope.GetTypeDesc(xmlReflectionMember.MemberType!), checkSpecified, false);
member.CheckShouldPersist = model.CheckShouldPersist;
member.CheckSpecified = model.CheckSpecified;
member.ReadOnly = model.ReadOnly; // || !model.FieldTypeDesc.HasDefaultConstructor;
Type? choiceIdentifierType = null;
if (a.XmlChoiceIdentifier != null)
{
choiceIdentifierType = GetChoiceIdentifierType(a.XmlChoiceIdentifier, xmlReflectionMembers, typeDesc.IsArrayLike, model.Name);
}
ImportAccessorMapping(member, model, a, ns, choiceIdentifierType, rpc, openModel, limiter);
if (xmlReflectionMember.OverrideIsNullable && member.Elements!.Length > 0)
member.Elements[0].IsNullable = false;
return member;
}
internal static XmlReflectionMember? FindSpecifiedMember(string memberName, XmlReflectionMember[] reflectionMembers)
{
for (int i = 0; i < reflectionMembers.Length; i++)
if (string.Equals(reflectionMembers[i].MemberName, $"{memberName}Specified", StringComparison.Ordinal))
return reflectionMembers[i];
return null;
}
[RequiresUnreferencedCode("calls ImportAccessorMapping")]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
private MemberMapping ImportFieldMapping(StructModel parent, FieldModel model, XmlAttributes a, string? ns, RecursionLimiter limiter)
{
MemberMapping member = new MemberMapping();
member.Name = model.Name;
member.CheckShouldPersist = model.CheckShouldPersist;
member.CheckSpecified = model.CheckSpecified;
member.MemberInfo = model.MemberInfo;
member.CheckSpecifiedMemberInfo = model.CheckSpecifiedMemberInfo;
member.CheckShouldPersistMethodInfo = model.CheckShouldPersistMethodInfo;
member.ReadOnly = model.ReadOnly; // || !model.FieldTypeDesc.HasDefaultConstructor;
Type? choiceIdentifierType = null;
if (a.XmlChoiceIdentifier != null)
{
choiceIdentifierType = GetChoiceIdentifierType(a.XmlChoiceIdentifier, parent, model.FieldTypeDesc.IsArrayLike, model.Name);
}
ImportAccessorMapping(member, model, a, ns, choiceIdentifierType, false, false, limiter);
return member;
}
private static Type CheckChoiceIdentifierType(Type type, bool isArrayLike, string identifierName, string memberName)
{
if (type.IsArray)
{
if (!isArrayLike)
{
// Inconsistent type of the choice identifier '{0}'. Please use {1}.
throw new InvalidOperationException(SR.Format(SR.XmlChoiceIdentifierType, identifierName, memberName, type.GetElementType()!.FullName));
}
type = type.GetElementType()!;
}
else if (isArrayLike)
{
// Inconsistent type of the choice identifier '{0}'. Please use {1}.
throw new InvalidOperationException(SR.Format(SR.XmlChoiceIdentifierArrayType, identifierName, memberName, type.FullName));
}
if (!type!.IsEnum)
{
// Choice identifier '{0}' must be an enum.
throw new InvalidOperationException(SR.Format(SR.XmlChoiceIdentifierTypeEnum, identifierName));
}
return type;
}
private static Type GetChoiceIdentifierType(XmlChoiceIdentifierAttribute choice, XmlReflectionMember[] xmlReflectionMembers, bool isArrayLike, string accessorName)
{
for (int i = 0; i < xmlReflectionMembers.Length; i++)
{
if (choice.MemberName == xmlReflectionMembers[i].MemberName)
{
return CheckChoiceIdentifierType(xmlReflectionMembers[i].MemberType!, isArrayLike, choice.MemberName, accessorName);
}
}
// Missing '{0}' needed for serialization of choice '{1}'.
throw new InvalidOperationException(SR.Format(SR.XmlChoiceIdentifierMemberMissing, choice.MemberName, accessorName));
}
[RequiresUnreferencedCode("calls GetFieldModel")]
private static Type GetChoiceIdentifierType(XmlChoiceIdentifierAttribute choice, StructModel structModel, bool isArrayLike, string accessorName)
{
// check that the choice field exists
MemberInfo[] infos = structModel.Type.GetMember(choice.MemberName, BindingFlags.DeclaredOnly | BindingFlags.Public | BindingFlags.Instance | BindingFlags.Static);
if (infos == null || infos.Length == 0)
{
// if we can not find the choice identifier between fields, check properties
PropertyInfo? info = structModel.Type.GetProperty(choice.MemberName, BindingFlags.DeclaredOnly | BindingFlags.Public | BindingFlags.Instance | BindingFlags.Static);
if (info == null)
{
// Missing '{0}' needed for serialization of choice '{1}'.
throw new InvalidOperationException(SR.Format(SR.XmlChoiceIdentifierMemberMissing, choice.MemberName, accessorName));
}
infos = new MemberInfo[] { info };
}
else if (infos.Length > 1)
{
// Ambiguous choice identifier: there are several members named '{0}'.
throw new InvalidOperationException(SR.Format(SR.XmlChoiceIdentifierAmbiguous, choice.MemberName));
}
FieldModel? member = structModel.GetFieldModel(infos[0]);
if (member == null)
{
// Missing '{0}' needed for serialization of choice '{1}'.
throw new InvalidOperationException(SR.Format(SR.XmlChoiceIdentifierMemberMissing, choice.MemberName, accessorName));
}
choice.SetMemberInfo(member.MemberInfo);
Type enumType = member.FieldType;
enumType = CheckChoiceIdentifierType(enumType, isArrayLike, choice.MemberName, accessorName);
return enumType;
}
[RequiresUnreferencedCode("calls ImportTypeMapping")]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
private void CreateArrayElementsFromAttributes(ArrayMapping arrayMapping, XmlArrayItemAttributes attributes, Type arrayElementType, string? arrayElementNs, RecursionLimiter limiter)
{
NameTable arrayItemElements = new NameTable(); // xmlelementname + xmlns -> ElementAccessor
for (int i = 0; attributes != null && i < attributes.Count; i++)
{
XmlArrayItemAttribute xmlArrayItem = attributes[i]!;
if (xmlArrayItem.NestingLevel != _arrayNestingLevel)
continue;
Type targetType = xmlArrayItem.Type ?? arrayElementType;
TypeDesc targetTypeDesc = _typeScope.GetTypeDesc(targetType);
ElementAccessor arrayItemElement = new ElementAccessor();
arrayItemElement.Namespace = xmlArrayItem.Namespace ?? arrayElementNs;
arrayItemElement.Mapping = ImportTypeMapping(_modelScope.GetTypeModel(targetType), arrayItemElement.Namespace, ImportContext.Element, xmlArrayItem.DataType, null, limiter);
arrayItemElement.Name = xmlArrayItem.ElementName.Length == 0 ? arrayItemElement.Mapping.DefaultElementName : XmlConvert.EncodeLocalName(xmlArrayItem.ElementName);
arrayItemElement.IsNullable = xmlArrayItem.GetIsNullableSpecified() ? xmlArrayItem.IsNullable : targetTypeDesc.IsNullable || targetTypeDesc.IsOptionalValue;
arrayItemElement.Form = xmlArrayItem.Form == XmlSchemaForm.None ? XmlSchemaForm.Qualified : xmlArrayItem.Form;
CheckForm(arrayItemElement.Form, arrayElementNs != arrayItemElement.Namespace);
CheckNullable(arrayItemElement.IsNullable, targetTypeDesc, arrayItemElement.Mapping);
AddUniqueAccessor(arrayItemElements, arrayItemElement);
}
arrayMapping.Elements = (ElementAccessor[])arrayItemElements.ToArray(typeof(ElementAccessor));
}
[RequiresUnreferencedCode("calls GetArrayElementType")]
[RequiresDynamicCode(XmlSerializer.AotSerializationWarning)]
private void ImportAccessorMapping(MemberMapping accessor, FieldModel model, XmlAttributes a, string? ns, Type? choiceIdentifierType, bool rpc, bool openModel, RecursionLimiter limiter)
{
XmlSchemaForm elementFormDefault = XmlSchemaForm.Qualified;
int previousNestingLevel = _arrayNestingLevel;
int sequenceId = -1;
XmlArrayItemAttributes? previousArrayItemAttributes = _savedArrayItemAttributes;
string? previousArrayNamespace = _savedArrayNamespace;
_arrayNestingLevel = 0;
_savedArrayItemAttributes = null;
_savedArrayNamespace = null;
Type accessorType = model.FieldType;
string accessorName = model.Name;
ArrayList elementList = new ArrayList();
NameTable elements = new NameTable();
accessor.TypeDesc = _typeScope.GetTypeDesc(accessorType);
XmlAttributeFlags flags = a.XmlFlags;
accessor.Ignore = a.XmlIgnore;
if (rpc)
CheckTopLevelAttributes(a);
else
CheckAmbiguousChoice(a, accessorType, accessorName);
XmlAttributeFlags elemFlags = XmlAttributeFlags.Elements | XmlAttributeFlags.Text | XmlAttributeFlags.AnyElements | XmlAttributeFlags.ChoiceIdentifier;
XmlAttributeFlags attrFlags = XmlAttributeFlags.Attribute | XmlAttributeFlags.AnyAttribute;
XmlAttributeFlags arrayFlags = XmlAttributeFlags.Array | XmlAttributeFlags.ArrayItems;
// special case for byte[]. It can be a primitive (base64Binary or hexBinary), or it can
// be an array of bytes. Our default is primitive; specify [XmlArray] to get array behavior.
if ((flags & arrayFlags) != 0 && accessorType == typeof(byte[]))
accessor.TypeDesc = _typeScope.GetArrayTypeDesc(accessorType);
if (a.XmlChoiceIdentifier != null)
{
accessor.ChoiceIdentifier = new ChoiceIdentifierAccessor();
accessor.ChoiceIdentifier.MemberName = a.XmlChoiceIdentifier.MemberName;
accessor.ChoiceIdentifier.MemberInfo = a.XmlChoiceIdentifier.GetMemberInfo();
accessor.ChoiceIdentifier.Mapping = ImportTypeMapping(_modelScope.GetTypeModel(choiceIdentifierType!), ns, ImportContext.Element, string.Empty, null, limiter);
CheckChoiceIdentifierMapping((EnumMapping)accessor.ChoiceIdentifier.Mapping);
}
if (accessor.TypeDesc.IsArrayLike)
{
Type arrayElementType = TypeScope.GetArrayElementType(accessorType, $"{model.FieldTypeDesc.FullName}.{model.Name}")!;
if ((flags & attrFlags) != 0)
{
if ((flags & attrFlags) != flags)
throw new InvalidOperationException(SR.XmlIllegalAttributesArrayAttribute);
if (a.XmlAttribute != null && !accessor.TypeDesc.ArrayElementTypeDesc!.IsPrimitive && !accessor.TypeDesc.ArrayElementTypeDesc.IsEnum)
{
if (accessor.TypeDesc.ArrayElementTypeDesc.Kind == TypeKind.Serializable)
{
throw new InvalidOperationException(SR.Format(SR.XmlIllegalAttrOrTextInterface, accessorName, accessor.TypeDesc.ArrayElementTypeDesc.FullName, nameof(IXmlSerializable)));
}
else
{
throw new InvalidOperationException(SR.Format(SR.XmlIllegalAttrOrText, accessorName, accessor.TypeDesc.ArrayElementTypeDesc.FullName));
}
}
bool isList = a.XmlAttribute != null && (accessor.TypeDesc.ArrayElementTypeDesc!.IsPrimitive || accessor.TypeDesc.ArrayElementTypeDesc.IsEnum);
if (a.XmlAnyAttribute != null)
{
a.XmlAttribute = new XmlAttributeAttribute();
}
AttributeAccessor attribute = new AttributeAccessor();
Type targetType = a.XmlAttribute!.Type == null ? arrayElementType : a.XmlAttribute.Type!;
TypeDesc targetTypeDesc = _typeScope.GetTypeDesc(targetType);
attribute.Name = Accessor.EscapeQName(a.XmlAttribute.AttributeName.Length == 0 ? accessorName : a.XmlAttribute.AttributeName);
attribute.Namespace = a.XmlAttribute.Namespace ?? ns;
attribute.Form = a.XmlAttribute.Form;
if (attribute.Form == XmlSchemaForm.None && ns != attribute.Namespace)
{
attribute.Form = XmlSchemaForm.Qualified;
}
attribute.CheckSpecial();
CheckForm(attribute.Form, ns != attribute.Namespace);
attribute.Mapping = ImportTypeMapping(_modelScope.GetTypeModel(targetType), ns, ImportContext.Attribute, a.XmlAttribute.DataType, null, isList, false, limiter);
attribute.IsList = isList;
attribute.Default = GetDefaultValue(model.FieldTypeDesc, model.FieldType, a);
attribute.Any = (a.XmlAnyAttribute != null);
if (attribute.Form == XmlSchemaForm.Qualified && attribute.Namespace != ns)
{
_xsdAttributes ??= new NameTable();
attribute = (AttributeAccessor)ReconcileAccessor(attribute, _xsdAttributes);
}
accessor.Attribute = attribute;
}
else if ((flags & elemFlags) != 0)
{
if ((flags & elemFlags) != flags)
throw new InvalidOperationException(SR.XmlIllegalElementsArrayAttribute);
if (a.XmlText != null)
{
TextAccessor text = new TextAccessor();
Type targetType = a.XmlText.Type ?? arrayElementType;
TypeDesc targetTypeDesc = _typeScope.GetTypeDesc(targetType);
text.Name = accessorName; // unused except to make more helpful error messages
text.Mapping = ImportTypeMapping(_modelScope.GetTypeModel(targetType), ns, ImportContext.Text, a.XmlText.DataType, null, true, false, limiter);
if (!(text.Mapping is SpecialMapping) && targetTypeDesc != _typeScope.GetTypeDesc(typeof(string)))
throw new InvalidOperationException(SR.Format(SR.XmlIllegalArrayTextAttribute, accessorName));
accessor.Text = text;
}
if (a.XmlText == null && a.XmlElements.Count == 0 && a.XmlAnyElements.Count == 0)
a.XmlElements.Add(CreateElementAttribute(accessor.TypeDesc));
for (int i = 0; i < a.XmlElements.Count; i++)
{
XmlElementAttribute xmlElement = a.XmlElements[i]!;
Type targetType = xmlElement.Type ?? arrayElementType;
TypeDesc targetTypeDesc = _typeScope.GetTypeDesc(targetType);
TypeModel typeModel = _modelScope.GetTypeModel(targetType);
ElementAccessor element = new ElementAccessor();
element.Namespace = rpc ? null : xmlElement.Namespace ?? ns;
element.Mapping = ImportTypeMapping(typeModel, rpc ? ns : element.Namespace, ImportContext.Element, xmlElement.DataType, null, limiter);
if (a.XmlElements.Count == 1)
{
element.Name = XmlConvert.EncodeLocalName(xmlElement.ElementName.Length == 0 ? accessorName : xmlElement.ElementName);
//element.IsUnbounded = element.Mapping is ArrayMapping;
}
else
{
element.Name = xmlElement.ElementName.Length == 0 ? element.Mapping.DefaultElementName : XmlConvert.EncodeLocalName(xmlElement.ElementName);
}
element.Default = GetDefaultValue(model.FieldTypeDesc, model.FieldType, a);
if (xmlElement.GetIsNullableSpecified() && !xmlElement.IsNullable && typeModel.TypeDesc.IsOptionalValue)
//XmlInvalidNotNullable=IsNullable may not be set to 'false' for a Nullable<{0}> type. Consider using '{0}' type or removing the IsNullable property from the XmlElement attribute.
throw new InvalidOperationException(SR.Format(SR.XmlInvalidNotNullable, typeModel.TypeDesc.BaseTypeDesc!.FullName, "XmlElement"));
element.IsNullable = xmlElement.GetIsNullableSpecified() ? xmlElement.IsNullable : typeModel.TypeDesc.IsOptionalValue;
element.Form = rpc ? XmlSchemaForm.Unqualified : xmlElement.Form == XmlSchemaForm.None ? elementFormDefault : xmlElement.Form;
CheckNullable(element.IsNullable, targetTypeDesc, element.Mapping);
if (!rpc)
{
CheckForm(element.Form, ns != element.Namespace);
element = ReconcileLocalAccessor(element, ns);
}
if (xmlElement.Order != -1)
{
if (xmlElement.Order != sequenceId && sequenceId != -1)
throw new InvalidOperationException(SR.Format(SR.XmlSequenceMatch, "Order"));
sequenceId = xmlElement.Order;
}
AddUniqueAccessor(elements, element);
elementList.Add(element);
}
NameTable anys = new NameTable();
for (int i = 0; i < a.XmlAnyElements.Count; i++)
{
XmlAnyElementAttribute xmlAnyElement = a.XmlAnyElements[i]!;
Type targetType = typeof(IXmlSerializable).IsAssignableFrom(arrayElementType) ? arrayElementType : typeof(XmlNode).IsAssignableFrom(arrayElementType) ? arrayElementType : typeof(XmlElement);
if (!arrayElementType.IsAssignableFrom(targetType))
throw new InvalidOperationException(SR.Format(SR.XmlIllegalAnyElement, arrayElementType.FullName));
string anyName = xmlAnyElement.Name.Length == 0 ? xmlAnyElement.Name : XmlConvert.EncodeLocalName(xmlAnyElement.Name);
string? anyNs = xmlAnyElement.GetNamespaceSpecified() ? xmlAnyElement.Namespace : null;
if (anys[anyName, anyNs] != null)
{
// ignore duplicate anys
continue;
}
anys[anyName, anyNs] = xmlAnyElement;
if (elements[anyName, anyNs ?? ns] != null)
{
throw new InvalidOperationException(SR.Format(SR.XmlAnyElementDuplicate, accessorName, xmlAnyElement.Name, xmlAnyElement.Namespace ?? "null"));
}
ElementAccessor element = new ElementAccessor();
element.Name = anyName;
element.Namespace = anyNs ?? ns;
element.Any = true;
element.AnyNamespaces = anyNs;
TypeDesc targetTypeDesc = _typeScope.GetTypeDesc(targetType);
TypeModel typeModel = _modelScope.GetTypeModel(targetType);
if (element.Name.Length > 0)
typeModel.TypeDesc.IsMixed = true;
element.Mapping = ImportTypeMapping(typeModel, element.Namespace, ImportContext.Element, string.Empty, null, limiter);
element.Default = GetDefaultValue(model.FieldTypeDesc, model.FieldType, a);
element.IsNullable = false;
element.Form = elementFormDefault;
CheckNullable(element.IsNullable, targetTypeDesc, element.Mapping);
if (!rpc)
{
CheckForm(element.Form, ns != element.Namespace);
element = ReconcileLocalAccessor(element, ns);
}
elements.Add(element.Name, element.Namespace, element);
elementList.Add(element);
if (xmlAnyElement.Order != -1)
{
if (xmlAnyElement.Order != sequenceId && sequenceId != -1)
throw new InvalidOperationException(SR.Format(SR.XmlSequenceMatch, "Order"));
sequenceId = xmlAnyElement.Order;
}
}
}
else
{
if ((flags & arrayFlags) != 0)
{
if ((flags & arrayFlags) != flags)
throw new InvalidOperationException(SR.XmlIllegalArrayArrayAttribute);
}
TypeDesc arrayElementTypeDesc = _typeScope.GetTypeDesc(arrayElementType);
a.XmlArray ??= CreateArrayAttribute();
if (CountAtLevel(a.XmlArrayItems, _arrayNestingLevel) == 0)
a.XmlArrayItems.Add(CreateArrayItemAttribute(_arrayNestingLevel));
ElementAccessor arrayElement = new ElementAccessor();
arrayElement.Name = XmlConvert.EncodeLocalName(a.XmlArray.ElementName.Length == 0 ? accessorName : a.XmlArray.ElementName);
arrayElement.Namespace = rpc ? null : a.XmlArray.Namespace ?? ns;
_savedArrayItemAttributes = a.XmlArrayItems;
_savedArrayNamespace = arrayElement.Namespace;
ArrayMapping arrayMapping = ImportArrayLikeMapping(_modelScope.GetArrayModel(accessorType), ns, limiter);
arrayElement.Mapping = arrayMapping;
arrayElement.IsNullable = a.XmlArray.IsNullable;
arrayElement.Form = rpc ? XmlSchemaForm.Unqualified : a.XmlArray.Form == XmlSchemaForm.None ? elementFormDefault : a.XmlArray.Form;
sequenceId = a.XmlArray.Order;
CheckNullable(arrayElement.IsNullable, accessor.TypeDesc, arrayElement.Mapping);
if (!rpc)
{
CheckForm(arrayElement.Form, ns != arrayElement.Namespace);
arrayElement = ReconcileLocalAccessor(arrayElement, ns);
}
_savedArrayItemAttributes = null;
_savedArrayNamespace = null;
AddUniqueAccessor(elements, arrayElement);
elementList.Add(arrayElement);
}
}
else if (!accessor.TypeDesc.IsVoid)
{
XmlAttributeFlags allFlags = XmlAttributeFlags.Elements | XmlAttributeFlags.Text | XmlAttributeFlags.Attribute | XmlAttributeFlags.AnyElements | XmlAttributeFlags.ChoiceIdentifier | XmlAttributeFlags.XmlnsDeclarations;
if ((flags & allFlags) != flags)
throw new InvalidOperationException(SR.XmlIllegalAttribute);
if (accessor.TypeDesc.IsPrimitive || accessor.TypeDesc.IsEnum)
{
if (a.XmlAnyElements.Count > 0) throw new InvalidOperationException(SR.Format(SR.XmlIllegalAnyElement, accessor.TypeDesc.FullName));
if (a.XmlAttribute != null)
{
if (a.XmlElements.Count > 0) throw new InvalidOperationException(SR.XmlIllegalAttribute);
if (a.XmlAttribute.Type != null) throw new InvalidOperationException(SR.Format(SR.XmlIllegalType, "XmlAttribute"));
AttributeAccessor attribute = new AttributeAccessor();
attribute.Name = Accessor.EscapeQName(a.XmlAttribute.AttributeName.Length == 0 ? accessorName : a.XmlAttribute.AttributeName);
attribute.Namespace = a.XmlAttribute.Namespace ?? ns;
attribute.Form = a.XmlAttribute.Form;
if (attribute.Form == XmlSchemaForm.None && ns != attribute.Namespace)
{
attribute.Form = XmlSchemaForm.Qualified;
}
attribute.CheckSpecial();
CheckForm(attribute.Form, ns != attribute.Namespace);
attribute.Mapping = ImportTypeMapping(_modelScope.GetTypeModel(accessorType), ns, ImportContext.Attribute, a.XmlAttribute.DataType, null, limiter);
attribute.Default = GetDefaultValue(model.FieldTypeDesc, model.FieldType, a);
attribute.Any = a.XmlAnyAttribute != null;
if (attribute.Form == XmlSchemaForm.Qualified && attribute.Namespace != ns)
{
_xsdAttributes ??= new NameTable();
attribute = (AttributeAccessor)ReconcileAccessor(attribute, _xsdAttributes);
}
accessor.Attribute = attribute;
}
else
{
if (a.XmlText != null)
{
if (a.XmlText.Type != null && a.XmlText.Type != accessorType)
throw new InvalidOperationException(SR.Format(SR.XmlIllegalType, "XmlText"));
TextAccessor text = new TextAccessor();
text.Name = accessorName; // unused except to make more helpful error messages
text.Mapping = ImportTypeMapping(_modelScope.GetTypeModel(accessorType), ns, ImportContext.Text, a.XmlText.DataType, null, limiter);
accessor.Text = text;
}
else if (a.XmlElements.Count == 0)
{
a.XmlElements.Add(CreateElementAttribute(accessor.TypeDesc));
}
for (int i = 0; i < a.XmlElements.Count; i++)
{
XmlElementAttribute xmlElement = a.XmlElements[i]!;
if (xmlElement!.Type != null)
{
if (_typeScope.GetTypeDesc(xmlElement.Type) != accessor.TypeDesc)
throw new InvalidOperationException(SR.Format(SR.XmlIllegalType, "XmlElement"));
}
ElementAccessor element = new ElementAccessor();
element.Name = XmlConvert.EncodeLocalName(xmlElement.ElementName.Length == 0 ? accessorName : xmlElement.ElementName);
element.Namespace = rpc ? null : xmlElement.Namespace ?? ns;
TypeModel typeModel = _modelScope.GetTypeModel(accessorType);
element.Mapping = ImportTypeMapping(typeModel, rpc ? ns : element.Namespace, ImportContext.Element, xmlElement.DataType, null, limiter);
if (element.Mapping.TypeDesc!.Kind == TypeKind.Node)
{
element.Any = true;
}
element.Default = GetDefaultValue(model.FieldTypeDesc, model.FieldType, a);
if (xmlElement.GetIsNullableSpecified() && !xmlElement.IsNullable && typeModel.TypeDesc.IsOptionalValue)
//XmlInvalidNotNullable=IsNullable may not be set to 'false' for a Nullable<{0}> type. Consider using '{0}' type or removing the IsNullable property from the XmlElement attribute.
throw new InvalidOperationException(SR.Format(SR.XmlInvalidNotNullable, typeModel.TypeDesc.BaseTypeDesc!.FullName, "XmlElement"));
element.IsNullable = xmlElement.GetIsNullableSpecified() ? xmlElement.IsNullable : typeModel.TypeDesc.IsOptionalValue;
element.Form = rpc ? XmlSchemaForm.Unqualified : xmlElement.Form == XmlSchemaForm.None ? elementFormDefault : xmlElement.Form;
CheckNullable(element.IsNullable, accessor.TypeDesc, element.Mapping);
if (!rpc)
{
CheckForm(element.Form, ns != element.Namespace);
element = ReconcileLocalAccessor(element, ns);
}
if (xmlElement.Order != -1)
{
if (xmlElement.Order != sequenceId && sequenceId != -1)
throw new InvalidOperationException(SR.Format(SR.XmlSequenceMatch, "Order"));
sequenceId = xmlElement.Order;
}
AddUniqueAccessor(elements, element);
elementList.Add(element);
}
}
}
else if (a.Xmlns)
{
if (flags != XmlAttributeFlags.XmlnsDeclarations)
throw new InvalidOperationException(SR.XmlSoleXmlnsAttribute);
if (accessorType != typeof(System.Xml.Serialization.XmlSerializerNamespaces))
{
throw new InvalidOperationException(SR.Format(SR.XmlXmlnsInvalidType, accessorName, accessorType.FullName, typeof(System.Xml.Serialization.XmlSerializerNamespaces).FullName));
}
accessor.Xmlns = new XmlnsAccessor();
accessor.Ignore = true;
}
else
{
if (a.XmlAttribute != null || a.XmlText != null)
{
if (accessor.TypeDesc.Kind == TypeKind.Serializable)
{
throw new InvalidOperationException(SR.Format(SR.XmlIllegalAttrOrTextInterface, accessorName, accessor.TypeDesc.FullName, nameof(IXmlSerializable)));
}
else
{
throw new InvalidOperationException(SR.Format(SR.XmlIllegalAttrOrText, accessorName, accessor.TypeDesc));
}
}
if (a.XmlElements.Count == 0 && a.XmlAnyElements.Count == 0)
a.XmlElements.Add(CreateElementAttribute(accessor.TypeDesc));
for (int i = 0; i < a.XmlElements.Count; i++)
{
XmlElementAttribute xmlElement = a.XmlElements[i]!;
Type targetType = xmlElement.Type ?? accessorType;
TypeDesc targetTypeDesc = _typeScope.GetTypeDesc(targetType);
ElementAccessor element = new ElementAccessor();
TypeModel typeModel = _modelScope.GetTypeModel(targetType);
element.Namespace = rpc ? null : xmlElement.Namespace ?? ns;
element.Mapping = ImportTypeMapping(typeModel, rpc ? ns : element.Namespace, ImportContext.Element, xmlElement.DataType, null, false, openModel, limiter);
if (a.XmlElements.Count == 1)
{
element.Name = XmlConvert.EncodeLocalName(xmlElement.ElementName.Length == 0 ? accessorName : xmlElement.ElementName);
}
else
{
element.Name = xmlElement.ElementName.Length == 0 ? element.Mapping.DefaultElementName : XmlConvert.EncodeLocalName(xmlElement.ElementName);
}
element.Default = GetDefaultValue(model.FieldTypeDesc, model.FieldType, a);
if (xmlElement.GetIsNullableSpecified() && !xmlElement.IsNullable && typeModel.TypeDesc.IsOptionalValue)
//XmlInvalidNotNullable=IsNullable may not be set to 'false' for a Nullable<{0}> type. Consider using '{0}' type or removing the IsNullable property from the XmlElement attribute.
throw new InvalidOperationException(SR.Format(SR.XmlInvalidNotNullable, typeModel.TypeDesc.BaseTypeDesc!.FullName, "XmlElement"));
element.IsNullable = xmlElement.GetIsNullableSpecified() ? xmlElement.IsNullable : typeModel.TypeDesc.IsOptionalValue;
element.Form = rpc ? XmlSchemaForm.Unqualified : xmlElement.Form == XmlSchemaForm.None ? elementFormDefault : xmlElement.Form;
CheckNullable(element.IsNullable, targetTypeDesc, element.Mapping);
if (!rpc)
{
CheckForm(element.Form, ns != element.Namespace);
element = ReconcileLocalAccessor(element, ns);
}
if (xmlElement.Order != -1)
{
if (xmlElement.Order != sequenceId && sequenceId != -1)
throw new InvalidOperationException(SR.Format(SR.XmlSequenceMatch, "Order"));
sequenceId = xmlElement.Order;
}
AddUniqueAccessor(elements, element);
elementList.Add(element);
}
NameTable anys = new NameTable();
for (int i = 0; i < a.XmlAnyElements.Count; i++)
{
XmlAnyElementAttribute xmlAnyElement = a.XmlAnyElements[i]!;
Type targetType = typeof(IXmlSerializable).IsAssignableFrom(accessorType) ? accessorType : typeof(XmlNode).IsAssignableFrom(accessorType) ? accessorType : typeof(XmlElement);
if (!accessorType.IsAssignableFrom(targetType))
throw new InvalidOperationException(SR.Format(SR.XmlIllegalAnyElement, accessorType.FullName));
string anyName = xmlAnyElement.Name.Length == 0 ? xmlAnyElement.Name : XmlConvert.EncodeLocalName(xmlAnyElement.Name);
string? anyNs = xmlAnyElement.GetNamespaceSpecified() ? xmlAnyElement.Namespace : null;
if (anys[anyName, anyNs] != null)
{
// ignore duplicate anys
continue;
}
anys[anyName, anyNs] = xmlAnyElement;
if (elements[anyName, anyNs ?? ns] != null)
{
throw new InvalidOperationException(SR.Format(SR.XmlAnyElementDuplicate, accessorName, xmlAnyElement.Name, xmlAnyElement.Namespace ?? "null"));
}
ElementAccessor element = new ElementAccessor();
element.Name = anyName;
element.Namespace = anyNs ?? ns;
element.Any = true;
element.AnyNamespaces = anyNs;
TypeDesc targetTypeDesc = _typeScope.GetTypeDesc(targetType);
TypeModel typeModel = _modelScope.GetTypeModel(targetType);
if (element.Name.Length > 0)
typeModel.TypeDesc.IsMixed = true;
element.Mapping = ImportTypeMapping(typeModel, element.Namespace, ImportContext.Element, string.Empty, null, false, openModel, limiter);
element.Default = GetDefaultValue(model.FieldTypeDesc, model.FieldType, a);
element.IsNullable = false;
element.Form = elementFormDefault;
CheckNullable(element.IsNullable, targetTypeDesc, element.Mapping);
if (!rpc)
{
CheckForm(element.Form, ns != element.Namespace);
element = ReconcileLocalAccessor(element, ns);
}
if (xmlAnyElement.Order != -1)
{
if (xmlAnyElement.Order != sequenceId && sequenceId != -1)
throw new InvalidOperationException(SR.Format(SR.XmlSequenceMatch, "Order"));
sequenceId = xmlAnyElement.Order;
}
elements.Add(element.Name, element.Namespace, element);
elementList.Add(element);
}
}
}
accessor.Elements = (ElementAccessor[])elementList.ToArray(typeof(ElementAccessor));
accessor.SequenceId = sequenceId;
if (rpc)
{
if (accessor.TypeDesc.IsArrayLike && accessor.Elements.Length > 0 && !(accessor.Elements[0].Mapping is ArrayMapping))
throw new InvalidOperationException(SR.Format(SR.XmlRpcLitArrayElement, accessor.Elements[0].Name));
if (accessor.Xmlns != null)
throw new InvalidOperationException(SR.Format(SR.XmlRpcLitXmlns, accessor.Name));
}
if (accessor.ChoiceIdentifier != null)
{
// find the enum value corresponding to each element
accessor.ChoiceIdentifier.MemberIds = new string[accessor.Elements.Length];
for (int i = 0; i < accessor.Elements.Length; i++)
{
bool found = false;
ElementAccessor element = accessor.Elements[i];
EnumMapping choiceMapping = (EnumMapping)accessor.ChoiceIdentifier.Mapping!;
for (int j = 0; j < choiceMapping.Constants!.Length; j++)
{
string xmlName = choiceMapping.Constants[j].XmlName;
if (element.Any && element.Name.Length == 0)
{
string anyNs = element.AnyNamespaces ?? "##any";
if (xmlName.Substring(0, xmlName.Length - 1) == anyNs)
{
accessor.ChoiceIdentifier.MemberIds[i] = choiceMapping.Constants[j].Name;
found = true;
break;
}
continue;
}
int colon = xmlName.LastIndexOf(':');
string? choiceNs = colon < 0 ? choiceMapping.Namespace : xmlName.Substring(0, colon);
string choiceName = colon < 0 ? xmlName : xmlName.Substring(colon + 1);
if (element.Name == choiceName)
{
if ((element.Form == XmlSchemaForm.Unqualified && string.IsNullOrEmpty(choiceNs)) || element.Namespace == choiceNs)
{
accessor.ChoiceIdentifier.MemberIds[i] = choiceMapping.Constants[j].Name;
found = true;
break;
}
}
}
if (!found)
{
if (element.Any && element.Name.Length == 0)
{
// Type {0} is missing enumeration value '##any' for XmlAnyElementAttribute.
throw new InvalidOperationException(SR.Format(SR.XmlChoiceMissingAnyValue, accessor.ChoiceIdentifier.Mapping!.TypeDesc!.FullName));
}
else
{
string id = element.Namespace != null && element.Namespace.Length > 0 ? $"{element.Namespace}:{element.Name}" : element.Name;
// Type {0} is missing value for '{1}'.
throw new InvalidOperationException(SR.Format(SR.XmlChoiceMissingValue, accessor.ChoiceIdentifier.Mapping!.TypeDesc!.FullName, id, element.Name, element.Namespace));
}
}
}
}
_arrayNestingLevel = previousNestingLevel;
_savedArrayItemAttributes = previousArrayItemAttributes;
_savedArrayNamespace = previousArrayNamespace;
}
private static void CheckTopLevelAttributes(XmlAttributes a)
{
XmlAttributeFlags flags = a.XmlFlags;
if ((flags & (XmlAttributeFlags.Attribute | XmlAttributeFlags.AnyAttribute)) != 0)
throw new InvalidOperationException(SR.XmlRpcLitAttributeAttributes);
if ((flags & (XmlAttributeFlags.Text | XmlAttributeFlags.AnyElements | XmlAttributeFlags.ChoiceIdentifier)) != 0)
throw new InvalidOperationException(SR.XmlRpcLitAttributes);
if (a.XmlElements != null && a.XmlElements.Count > 0)
{
if (a.XmlElements.Count > 1)
{
throw new InvalidOperationException(SR.XmlRpcLitElements);
}
XmlElementAttribute xmlElement = a.XmlElements[0]!;
if (xmlElement.Namespace != null)
{
throw new InvalidOperationException(SR.Format(SR.XmlRpcLitElementNamespace, "Namespace", xmlElement.Namespace));
}
if (xmlElement.IsNullable)
{
throw new InvalidOperationException(SR.Format(SR.XmlRpcLitElementNullable, "IsNullable", "true"));
}
}
if (a.XmlArray != null && a.XmlArray.Namespace != null)
{
throw new InvalidOperationException(SR.Format(SR.XmlRpcLitElementNamespace, "Namespace", a.XmlArray.Namespace));
}
}
private void CheckAmbiguousChoice(XmlAttributes a, Type accessorType, string accessorName)
{
Hashtable choiceTypes = new Hashtable();
XmlElementAttributes elements = a.XmlElements;
if (elements != null && elements.Count >= 2 && a.XmlChoiceIdentifier == null)
{
for (int i = 0; i < elements.Count; i++)
{
Type type = elements[i]!.Type == null ? accessorType : elements[i]!.Type!;
if (choiceTypes.Contains(type))
{
// You need to add {0} to the '{1}'.
throw new InvalidOperationException(SR.Format(SR.XmlChoiceIdentifierMissing, nameof(XmlChoiceIdentifierAttribute), accessorName));
}
else
{
choiceTypes.Add(type, false);
}
}
}
if (choiceTypes.Contains(typeof(XmlElement)) && a.XmlAnyElements.Count > 0)
{
// You need to add {0} to the '{1}'.
throw new InvalidOperationException(SR.Format(SR.XmlChoiceIdentifierMissing, nameof(XmlChoiceIdentifierAttribute), accessorName));
}
XmlArrayItemAttributes items = a.XmlArrayItems;
if (items != null && items.Count >= 2)
{
NameTable arrayTypes = new NameTable();
for (int i = 0; i < items.Count; i++)
{
Type type = items[i]!.Type == null ? accessorType : items[i]!.Type!;
string ns = items[i]!.NestingLevel.ToString(CultureInfo.InvariantCulture);
XmlArrayItemAttribute? item = (XmlArrayItemAttribute?)arrayTypes[type.FullName, ns];
if (item != null)
{
throw new InvalidOperationException(SR.Format(SR.XmlArrayItemAmbiguousTypes, accessorName, item.ElementName, items[i]!.ElementName, nameof(XmlElementAttribute), nameof(XmlChoiceIdentifierAttribute), accessorName));
}
else
{
arrayTypes[type.FullName, ns] = items[i];
}
}
}
}
private static void CheckChoiceIdentifierMapping(EnumMapping choiceMapping)
{
NameTable ids = new NameTable();
for (int i = 0; i < choiceMapping.Constants!.Length; i++)
{
string choiceId = choiceMapping.Constants[i].XmlName;
int colon = choiceId.LastIndexOf(':');
string choiceName = colon < 0 ? choiceId : choiceId.Substring(colon + 1);
string choiceNs = colon < 0 ? "" : choiceId.Substring(0, colon);
if (ids[choiceName, choiceNs] != null)
{
// Enum values in the XmlChoiceIdentifier '{0}' have to be unique. Value '{1}' already present.
throw new InvalidOperationException(SR.Format(SR.XmlChoiceIdDuplicate, choiceMapping.TypeName, choiceId));
}
ids.Add(choiceName, choiceNs, choiceMapping.Constants[i]);
}
}
private static object? GetDefaultValue(TypeDesc fieldTypeDesc, Type t, XmlAttributes a)
{
if (a.XmlDefaultValue == null || a.XmlDefaultValue == DBNull.Value) return null;
if (!(fieldTypeDesc.Kind == TypeKind.Primitive || fieldTypeDesc.Kind == TypeKind.Enum))
{
//throw new InvalidOperationException(SR.XmlIllegalDefault);
a.XmlDefaultValue = null;
return a.XmlDefaultValue;
}
// for enums validate and return a string representation
if (fieldTypeDesc.Kind == TypeKind.Enum)
{
string strValue = Enum.Format(t, a.XmlDefaultValue, "G").Replace(",", " ");
string numValue = Enum.Format(t, a.XmlDefaultValue, "D");
if (strValue == numValue) // means enum value wasn't recognized
throw new InvalidOperationException(SR.Format(SR.XmlInvalidDefaultValue, strValue, a.XmlDefaultValue.GetType().FullName));
return strValue;
}
return a.XmlDefaultValue;
}
private static XmlArrayItemAttribute CreateArrayItemAttribute(int nestingLevel)
{
XmlArrayItemAttribute xmlArrayItem = new XmlArrayItemAttribute();
xmlArrayItem.NestingLevel = nestingLevel;
return xmlArrayItem;
}
private static XmlArrayAttribute CreateArrayAttribute()
{
XmlArrayAttribute xmlArrayItem = new XmlArrayAttribute();
return xmlArrayItem;
}
private static XmlElementAttribute CreateElementAttribute(TypeDesc typeDesc)
{
XmlElementAttribute xmlElement = new XmlElementAttribute();
xmlElement.IsNullable = typeDesc.IsOptionalValue;
return xmlElement;
}
private static void AddUniqueAccessor(INameScope scope, Accessor accessor)
{
Accessor? existing = (Accessor?)scope[accessor.Name, accessor.Namespace];
if (existing != null)
{
if (accessor is ElementAccessor)
{
throw new InvalidOperationException(SR.Format(SR.XmlDuplicateElementName, existing.Name, existing.Namespace));
}
else
{
#if DEBUG
if (!(accessor is AttributeAccessor))
throw new InvalidOperationException(SR.Format(SR.XmlInternalErrorDetails, "Bad accessor type " + accessor.GetType().FullName));
#endif
throw new InvalidOperationException(SR.Format(SR.XmlDuplicateAttributeName, existing.Name, existing.Namespace));
}
}
else
{
scope[accessor.Name, accessor.Namespace] = accessor;
}
}
private static void AddUniqueAccessor(MemberMapping member, INameScope elements, INameScope attributes, bool isSequence)
{
if (member.Attribute != null)
{
AddUniqueAccessor(attributes, member.Attribute);
}
else if (!isSequence && member.Elements != null && member.Elements.Length > 0)
{
for (int i = 0; i < member.Elements.Length; i++)
{
AddUniqueAccessor(elements, member.Elements[i]);
}
}
}
private static void CheckForm(XmlSchemaForm form, bool isQualified)
{
if (isQualified && form == XmlSchemaForm.Unqualified) throw new InvalidOperationException(SR.XmlInvalidFormUnqualified);
}
private static void CheckNullable(bool isNullable, TypeDesc typeDesc, TypeMapping? mapping)
{
if (mapping is NullableMapping) return;
if (mapping is SerializableMapping) return;
if (isNullable && !typeDesc.IsNullable) throw new InvalidOperationException(SR.Format(SR.XmlInvalidIsNullable, typeDesc.FullName));
}
private static ElementAccessor CreateElementAccessor(TypeMapping mapping, string ns)
{
ElementAccessor element = new ElementAccessor();
bool isAny = mapping.TypeDesc!.Kind == TypeKind.Node;
if (!isAny && mapping is SerializableMapping)
{
isAny = ((SerializableMapping)mapping).IsAny;
}
if (isAny)
{
element.Any = true;
}
else
{
element.Name = mapping.DefaultElementName;
element.Namespace = ns;
}
element.Mapping = mapping;
return element;
}
// will create a shallow type mapping for a top-level type
[RequiresUnreferencedCode("Calls TypeScope.GetTypeDesc(Type) which has RequiresUnreferencedCode")]
internal static XmlTypeMapping GetTopLevelMapping(Type type, string? defaultNamespace)
{
defaultNamespace ??= string.Empty;
XmlAttributes a = new XmlAttributes(type);
TypeDesc typeDesc = new TypeScope().GetTypeDesc(type);
ElementAccessor element = new ElementAccessor();
if (typeDesc.Kind == TypeKind.Node)
{
element.Any = true;
}
else
{
string? ns = a.XmlRoot == null ? defaultNamespace : a.XmlRoot.Namespace;
string typeName = string.Empty;
if (a.XmlType != null)
typeName = a.XmlType.TypeName;
if (typeName.Length == 0)
typeName = type.Name;
element.Name = XmlConvert.EncodeLocalName(typeName);
element.Namespace = ns;
}
XmlTypeMapping mapping = new XmlTypeMapping(null, element);
mapping.SetKeyInternal(XmlMapping.GenerateKey(type, a.XmlRoot, defaultNamespace));
return mapping;
}
}
internal sealed class ImportStructWorkItem
{
private readonly StructModel _model;
private readonly StructMapping _mapping;
internal ImportStructWorkItem(StructModel model, StructMapping mapping)
{
_model = model;
_mapping = mapping;
}
internal StructModel Model { get { return _model; } }
internal StructMapping Mapping { get { return _mapping; } }
}
internal sealed class WorkItems
{
private readonly ArrayList _list = new ArrayList();
internal ImportStructWorkItem this[int index]
{
get
{
return (ImportStructWorkItem)_list[index]!;
}
set
{
_list[index] = value;
}
}
internal int Count
{
get
{
return _list.Count;
}
}
internal void Add(ImportStructWorkItem item)
{
_list.Add(item);
}
internal bool Contains(StructMapping mapping)
{
return IndexOf(mapping) >= 0;
}
internal int IndexOf(StructMapping mapping)
{
for (int i = 0; i < Count; i++)
{
if (this[i].Mapping == mapping)
return i;
}
return -1;
}
internal void RemoveAt(int index)
{
_list.RemoveAt(index);
}
}
internal sealed class RecursionLimiter
{
private readonly int _maxDepth;
private int _depth;
private WorkItems? _deferredWorkItems;
internal RecursionLimiter()
{
_depth = 0;
_maxDepth = DiagnosticsSwitches.NonRecursiveTypeLoading.Enabled ? 1 : int.MaxValue;
}
internal bool IsExceededLimit { get { return _depth > _maxDepth; } }
internal int Depth { get { return _depth; } set { _depth = value; } }
internal WorkItems DeferredWorkItems => _deferredWorkItems ??= new WorkItems();
}
}
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