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- using System;
- using System.Collections;
- using System.Collections.Generic;
- using System.Linq;
- using System.Reflection;
- using System.Xml;
- namespace System.Runtime.Serialization.Json
- {
- internal partial class JsonFormatWriterGenerator
- {
- partial class CriticalHelper
- {
- internal JsonFormatClassWriterDelegate GenerateClassWriter(ClassDataContract classContract)
- {
- return (XmlWriterDelegator xmlWriter, object obj, XmlObjectSerializerWriteContextComplexJson context, ClassDataContract dataContract, XmlDictionaryString [] memberNames) => new JsonFormatWriterInterpreter (classContract).WriteToJson (xmlWriter, obj, context, dataContract, memberNames);
- }
- internal JsonFormatCollectionWriterDelegate GenerateCollectionWriter(CollectionDataContract collectionContract)
- {
- return (XmlWriterDelegator xmlWriter, object obj, XmlObjectSerializerWriteContextComplexJson context, CollectionDataContract dataContract) => new JsonFormatWriterInterpreter (collectionContract).WriteCollectionToJson (xmlWriter, obj, context, dataContract);
- }
- }
- }
- class JsonFormatWriterInterpreter
- {
- public JsonFormatWriterInterpreter (ClassDataContract classContract)
- {
- this.classContract = classContract;
- }
- public JsonFormatWriterInterpreter (CollectionDataContract collectionContract)
- {
- this.collectionContract = collectionContract;
- }
- ClassDataContract classContract;
- CollectionDataContract collectionContract;
- XmlWriterDelegator writer = null;
- object obj = null;
- XmlObjectSerializerWriteContextComplexJson context = null;
- DataContract dataContract = null;
- object objLocal = null;
- ClassDataContract classDataContract {
- get { return (ClassDataContract) dataContract; }
- }
- CollectionDataContract collectionDataContract {
- get {return (CollectionDataContract) dataContract; }
- }
- XmlDictionaryString [] memberNames = null;
- int typeIndex = 1;
- int childElementIndex = 0;
- public void WriteToJson (XmlWriterDelegator xmlWriter, object obj, XmlObjectSerializerWriteContextComplexJson context, ClassDataContract dataContract, XmlDictionaryString [] memberNames)
- {
- this.writer = xmlWriter;
- this.obj = obj;
- this.context = context;
- this.dataContract = dataContract;
- this.memberNames = memberNames;
- InitArgs (classContract.UnderlyingType);
- // DemandSerializationFormatterPermission (classContract) - irrelevant
- // DemandMemberAccessPermission (memberAccessFlag) - irrelevant
- if (classContract.IsReadOnlyContract)
- {
- DataContract.ThrowInvalidDataContractException (classContract.SerializationExceptionMessage, null);
- }
- WriteClass (classContract);
- }
- public void WriteCollectionToJson (XmlWriterDelegator xmlWriter, object obj, XmlObjectSerializerWriteContextComplexJson context, CollectionDataContract dataContract)
- {
- this.writer = xmlWriter;
- this.obj = obj;
- this.context = context;
- this.dataContract = dataContract;
- InitArgs (collectionContract.UnderlyingType);
- // DemandMemberAccessPermission(memberAccessFlag);
- if (collectionContract.IsReadOnlyContract)
- {
- DataContract.ThrowInvalidDataContractException (collectionContract.SerializationExceptionMessage, null);
- }
- WriteCollection (collectionContract);
- }
- void InitArgs (Type objType)
- {
- if (objType == Globals.TypeOfDateTimeOffsetAdapter) {
- objLocal = DateTimeOffsetAdapter.GetDateTimeOffsetAdapter ((DateTimeOffset) obj);
- }
- else
- objLocal = CodeInterpreter.ConvertValue (obj, typeof (object), objType);
- }
- void InvokeOnSerializing (ClassDataContract classContract, object objSerialized, XmlObjectSerializerWriteContext context)
- {
- if (classContract.BaseContract != null)
- InvokeOnSerializing (classContract.BaseContract, objSerialized, context);
- if (classContract.OnSerializing != null) {
- classContract.OnSerializing.Invoke (objSerialized, new object [] {context.GetStreamingContext ()});
- }
- }
- void InvokeOnSerialized (ClassDataContract classContract, object objSerialized, XmlObjectSerializerWriteContext context)
- {
- if (classContract.BaseContract != null)
- InvokeOnSerialized (classContract.BaseContract, objSerialized, context);
- if (classContract.OnSerialized != null) {
- classContract.OnSerialized.Invoke (objSerialized, new object [] {context.GetStreamingContext ()});
- }
- }
- void WriteClass (ClassDataContract classContract)
- {
- InvokeOnSerializing (classContract, objLocal, context);
- if (classContract.IsISerializable)
- context.WriteJsonISerializable (writer, (ISerializable) objLocal);
- else
- {
- if (classContract.HasExtensionData)
- {
- ExtensionDataObject extensionData = ((IExtensibleDataObject) objLocal).ExtensionData;
- context.WriteExtensionData (writer, extensionData, -1);
- WriteMembers (classContract, extensionData, classContract);
- }
- else
- WriteMembers (classContract, null, classContract);
- }
- InvokeOnSerialized (classContract, objLocal, context);
- }
- void WriteCollection(CollectionDataContract collectionContract)
- {
- XmlDictionaryString itemName = context.CollectionItemName;
- if (collectionContract.Kind == CollectionKind.Array)
- {
- Type itemType = collectionContract.ItemType;
- int i;
- // This check does not exist in the original dynamic code,
- // but there is no other way to check type mismatch.
- // CollectionSerialization.ArrayContract() shows that it is required.
- if (objLocal.GetType ().GetElementType () != itemType)
- throw new InvalidCastException (string.Format ("Cannot cast array of {0} to array of {1}", objLocal.GetType ().GetElementType (), itemType));
- context.IncrementArrayCount (writer, (Array) objLocal);
- if (!TryWritePrimitiveArray(collectionContract.UnderlyingType, itemType, () => objLocal, itemName))
- {
- WriteArrayAttribute ();
- var arr = (Array) objLocal;
- var idx = new int [1];
- for (i = 0; i < arr.Length; i++) {
- if (!TryWritePrimitive(itemType, null, null, i, itemName, 0)) {
- WriteStartElement (itemName, 0);
- idx [0] = i;
- var mbrVal = arr.GetValue (idx);
- WriteValue (itemType, mbrVal);
- WriteEndElement ();
- }
- }
- }
- }
- else
- {
- // This check does not exist in the original dynamic code,
- // but there is no other way to check type mismatch.
- // CollectionSerialization.ArrayContract() shows that it is required.
- if (!collectionContract.UnderlyingType.IsAssignableFrom (objLocal.GetType ()))
- throw new InvalidCastException (string.Format ("Cannot cast {0} to {1}", objLocal.GetType (), collectionContract.UnderlyingType));
-
- MethodInfo incrementCollectionCountMethod = null;
- switch (collectionContract.Kind)
- {
- case CollectionKind.Collection:
- case CollectionKind.List:
- case CollectionKind.Dictionary:
- incrementCollectionCountMethod = XmlFormatGeneratorStatics.IncrementCollectionCountMethod;
- break;
- case CollectionKind.GenericCollection:
- case CollectionKind.GenericList:
- incrementCollectionCountMethod = XmlFormatGeneratorStatics.IncrementCollectionCountGenericMethod.MakeGenericMethod(collectionContract.ItemType);
- break;
- case CollectionKind.GenericDictionary:
- incrementCollectionCountMethod = XmlFormatGeneratorStatics.IncrementCollectionCountGenericMethod.MakeGenericMethod(Globals.TypeOfKeyValuePair.MakeGenericType(collectionContract.ItemType.GetGenericArguments()));
- break;
- }
- if (incrementCollectionCountMethod != null)
- incrementCollectionCountMethod.Invoke (context, new object [] {writer, objLocal});
- bool isDictionary = false, isGenericDictionary = false;
- Type enumeratorType = null;
- Type [] keyValueTypes = null;
- if (collectionContract.Kind == CollectionKind.GenericDictionary)
- {
- isGenericDictionary = true;
- keyValueTypes = collectionContract.ItemType.GetGenericArguments ();
- enumeratorType = Globals.TypeOfGenericDictionaryEnumerator.MakeGenericType (keyValueTypes);
- }
- else if (collectionContract.Kind == CollectionKind.Dictionary)
- {
- isDictionary = true;
- keyValueTypes = new Type[] { Globals.TypeOfObject, Globals.TypeOfObject };
- enumeratorType = Globals.TypeOfDictionaryEnumerator;
- }
- else
- {
- enumeratorType = collectionContract.GetEnumeratorMethod.ReturnType;
- }
- MethodInfo moveNextMethod = enumeratorType.GetMethod (Globals.MoveNextMethodName, BindingFlags.Instance | BindingFlags.Public, null, Globals.EmptyTypeArray, null);
- MethodInfo getCurrentMethod = enumeratorType.GetMethod (Globals.GetCurrentMethodName, BindingFlags.Instance | BindingFlags.Public, null, Globals.EmptyTypeArray, null);
- if (moveNextMethod == null || getCurrentMethod == null)
- {
- if (enumeratorType.IsInterface)
- {
- if (moveNextMethod == null)
- moveNextMethod = JsonFormatGeneratorStatics.MoveNextMethod;
- if (getCurrentMethod == null)
- getCurrentMethod = JsonFormatGeneratorStatics.GetCurrentMethod;
- }
- else
- {
- Type ienumeratorInterface = Globals.TypeOfIEnumerator;
- CollectionKind kind = collectionContract.Kind;
- if (kind == CollectionKind.GenericDictionary || kind == CollectionKind.GenericCollection || kind == CollectionKind.GenericEnumerable)
- {
- Type[] interfaceTypes = enumeratorType.GetInterfaces();
- foreach (Type interfaceType in interfaceTypes)
- {
- if (interfaceType.IsGenericType
- && interfaceType.GetGenericTypeDefinition() == Globals.TypeOfIEnumeratorGeneric
- && interfaceType.GetGenericArguments()[0] == collectionContract.ItemType)
- {
- ienumeratorInterface = interfaceType;
- break;
- }
- }
- }
- if (moveNextMethod == null)
- moveNextMethod = CollectionDataContract.GetTargetMethodWithName(Globals.MoveNextMethodName, enumeratorType, ienumeratorInterface);
- if (getCurrentMethod == null)
- getCurrentMethod = CollectionDataContract.GetTargetMethodWithName(Globals.GetCurrentMethodName, enumeratorType, ienumeratorInterface);
- }
- }
- Type elementType = getCurrentMethod.ReturnType;
- object currentValue = null; // of elementType
- var enumerator = (IEnumerator) collectionContract.GetEnumeratorMethod.Invoke (objLocal, new object [0]);
- if (isDictionary)
- {
- ConstructorInfo dictEnumCtor = enumeratorType.GetConstructor (Globals.ScanAllMembers, null, new Type[] { Globals.TypeOfIDictionaryEnumerator }, null);
- enumerator = (IEnumerator) dictEnumCtor.Invoke (new object [] {enumerator});
- }
- else if (isGenericDictionary)
- {
- Type ctorParam = Globals.TypeOfIEnumeratorGeneric.MakeGenericType(Globals.TypeOfKeyValuePair.MakeGenericType(keyValueTypes));
- ConstructorInfo dictEnumCtor = enumeratorType.GetConstructor(Globals.ScanAllMembers, null, new Type[] { ctorParam }, null);
- enumerator = (IEnumerator) Activator.CreateInstance (enumeratorType, new object [] {enumerator});
- }
- bool canWriteSimpleDictionary = isDictionary || isGenericDictionary;
-
- bool writeSimpleDictionary = canWriteSimpleDictionary && context.UseSimpleDictionaryFormat;
- PropertyInfo genericDictionaryKeyProperty = null, genericDictionaryValueProperty = null;
-
- if (canWriteSimpleDictionary)
- {
- Type genericDictionaryKeyValueType = Globals.TypeOfKeyValue.MakeGenericType (keyValueTypes);
- genericDictionaryKeyProperty = genericDictionaryKeyValueType.GetProperty (JsonGlobals.KeyString);
- genericDictionaryValueProperty = genericDictionaryKeyValueType.GetProperty (JsonGlobals.ValueString);
- }
- if (writeSimpleDictionary) {
- WriteObjectAttribute ();
- object key, value;
- var empty_args = new object [0];
- while ((bool) moveNextMethod.Invoke (enumerator, empty_args)) {
- currentValue = getCurrentMethod.Invoke (enumerator, empty_args);
- key = CodeInterpreter.GetMember (genericDictionaryKeyProperty, currentValue);
- value = CodeInterpreter.GetMember (genericDictionaryValueProperty, currentValue);
- WriteStartElement (key, 0 /*nameIndex*/);
- WriteValue (genericDictionaryValueProperty.PropertyType, value);
- WriteEndElement ();
- }
- } else {
- WriteArrayAttribute ();
- var emptyArray = new object [0];
- while (enumerator != null && enumerator.MoveNext ()) {
- currentValue = getCurrentMethod.Invoke (enumerator, emptyArray);
- if (incrementCollectionCountMethod == null)
- XmlFormatGeneratorStatics.IncrementItemCountMethod.Invoke (context, new object [] {1});
- if (!TryWritePrimitive (elementType, () => currentValue, null, null, itemName, 0))
- {
- WriteStartElement (itemName, 0);
- if (isGenericDictionary || isDictionary) {
- var jc = JsonDataContract.GetJsonDataContract (XmlObjectSerializerWriteContextComplexJson.GetRevisedItemContract (
- collectionDataContract.ItemContract));
- // FIXME: this TypeHandle might be wrong; there is no easy way to get Type for currentValue though.
- DataContractJsonSerializer.WriteJsonValue (jc, writer, currentValue, context, currentValue.GetType ().TypeHandle);
- }
- else
- WriteValue (elementType, currentValue);
- WriteEndElement ();
- }
- }
- }
- }
- }
- int WriteMembers (ClassDataContract classContract, ExtensionDataObject extensionData, ClassDataContract derivedMostClassContract)
- {
- int memberCount = (classContract.BaseContract == null) ? 0 : WriteMembers (classContract.BaseContract, extensionData, derivedMostClassContract);
- context.IncrementItemCount (classContract.Members.Count);
- for (int i = 0; i < classContract.Members.Count; i++, memberCount++) {
- DataMember member = classContract.Members[i];
- Type memberType = member.MemberType;
- object memberValue = null;
- if (member.IsGetOnlyCollection)
- context.StoreIsGetOnlyCollection ();
- bool doWrite = true, hasMemberValue = false;
- if (!member.EmitDefaultValue)
- {
- hasMemberValue = true;
- memberValue = LoadMemberValue (member);
- doWrite = !IsDefaultValue (memberType, memberValue);
- }
- if (doWrite) {
- bool requiresNameAttribute = DataContractJsonSerializer.CheckIfXmlNameRequiresMapping (classContract.MemberNames [i]);
-
- if (requiresNameAttribute || !TryWritePrimitive(memberType, hasMemberValue ? () => memberValue : (Func<object>) null, member.MemberInfo, null /*arrayItemIndex*/, null /*nameLocal*/, i + childElementIndex)) {
- // Note: DataContractSerializer has member-conflict logic here to deal with the schema export
- // requirement that the same member can't be of two different types.
- if (requiresNameAttribute)
- XmlObjectSerializerWriteContextComplexJson.WriteJsonNameWithMapping (writer, memberNames, i + childElementIndex);
- else
- WriteStartElement (null /*nameLocal*/, i + childElementIndex);
- if (memberValue == null)
- memberValue = LoadMemberValue (member);
- WriteValue (memberType, memberValue);
- WriteEndElement ();
- }
- if (classContract.HasExtensionData)
- context.WriteExtensionData (writer, extensionData, memberCount);
- } else if (!member.EmitDefaultValue) {
- if (member.IsRequired)
- XmlObjectSerializerWriteContext.ThrowRequiredMemberMustBeEmitted (member.Name, classContract.UnderlyingType);
- }
- }
- typeIndex++;
- childElementIndex += classContract.Members.Count;
- return memberCount;
- }
- internal bool IsDefaultValue (Type type, object value)
- {
- var def = GetDefaultValue (type);
- return def == null ? (object) value == null : def.Equals (value);
- }
- internal object GetDefaultValue(Type type)
- {
- if (type.IsValueType)
- {
- switch (Type.GetTypeCode(type))
- {
- case TypeCode.Boolean:
- return false;
- case TypeCode.Char:
- case TypeCode.SByte:
- case TypeCode.Byte:
- case TypeCode.Int16:
- case TypeCode.UInt16:
- case TypeCode.Int32:
- case TypeCode.UInt32:
- return 0;
- case TypeCode.Int64:
- case TypeCode.UInt64:
- return 0L;
- case TypeCode.Single:
- return 0.0F;
- case TypeCode.Double:
- return 0.0;
- case TypeCode.Decimal:
- return default (decimal);
- case TypeCode.DateTime:
- return default (DateTime);
- }
- }
- return null;
- }
- void WriteStartElement (object nameLocal, int nameIndex)
- {
- var name = nameLocal ?? memberNames [nameIndex];
- XmlDictionaryString namespaceLocal = null;
- if (nameLocal != null && nameLocal is string)
- writer.WriteStartElement ((string) name, null);
- else
- writer.WriteStartElement ((XmlDictionaryString) name, null);
- }
- void WriteEndElement ()
- {
- writer.WriteEndElement ();
- }
- void WriteArrayAttribute ()
- {
- writer.WriteAttributeString (
- null /* prefix */,
- JsonGlobals.typeString /* local name */,
- string.Empty /* namespace */,
- JsonGlobals.arrayString /* value */);
- }
- void WriteObjectAttribute ()
- {
- writer.WriteAttributeString (
- null /* prefix */,
- JsonGlobals.typeString /* local name */,
- null /* namespace */,
- JsonGlobals.objectString /* value */);
- }
- void WriteValue (Type memberType, object memberValue)
- {
- Pointer memberValueRefPointer = null;
- if (memberType.IsPointer)
- memberValueRefPointer = (Pointer) JsonFormatGeneratorStatics.BoxPointer.Invoke (null, new object [] {memberValue, memberType});
- bool isNullableOfT = (memberType.IsGenericType &&
- memberType.GetGenericTypeDefinition() == Globals.TypeOfNullable);
- if (memberType.IsValueType && !isNullableOfT)
- {
- PrimitiveDataContract primitiveContract = PrimitiveDataContract.GetPrimitiveDataContract(memberType);
- if (primitiveContract != null)
- primitiveContract.XmlFormatContentWriterMethod.Invoke (writer, new object [] {memberValue});
- else
- InternalSerialize (XmlFormatGeneratorStatics.InternalSerializeMethod, () => memberValue, memberType, false);
- }
- else
- {
- bool isNull;
- if (isNullableOfT)
- memberValue = UnwrapNullableObject(() => memberValue, ref memberType, out isNull); //Leaves !HasValue on stack
- else
- isNull = memberValue == null;
- if (isNull)
- XmlFormatGeneratorStatics.WriteNullMethod.Invoke (context, new object [] {writer, memberType, DataContract.IsTypeSerializable(memberType)});
- else {
- PrimitiveDataContract primitiveContract = PrimitiveDataContract.GetPrimitiveDataContract(memberType);
- if (primitiveContract != null && primitiveContract.UnderlyingType != Globals.TypeOfObject) {
- if (isNullableOfT)
- primitiveContract.XmlFormatContentWriterMethod.Invoke (writer, new object [] {memberValue});
- else
- primitiveContract.XmlFormatContentWriterMethod.Invoke (context, new object [] {writer, memberValue});
- } else {
- bool isNull2 = false;
- if (memberType == Globals.TypeOfObject || //boxed Nullable<T>
- memberType == Globals.TypeOfValueType ||
- ((IList)Globals.TypeOfNullable.GetInterfaces()).Contains(memberType)) {
- var unwrappedMemberValue = CodeInterpreter.ConvertValue (memberValue, memberType.GetType (), Globals.TypeOfObject);
- memberValue = unwrappedMemberValue;
- isNull2 = memberValue == null;
- }
- if (isNull2) {
- XmlFormatGeneratorStatics.WriteNullMethod.Invoke (context, new object [] {writer, memberType, DataContract.IsTypeSerializable(memberType)});
- } else {
- InternalSerialize((isNullableOfT ? XmlFormatGeneratorStatics.InternalSerializeMethod : XmlFormatGeneratorStatics.InternalSerializeReferenceMethod),
- () => memberValue, memberType, false);
- }
- }
- }
- }
- }
- void InternalSerialize (MethodInfo methodInfo, Func<object> memberValue, Type memberType, bool writeXsiType)
- {
- var v = memberValue ();
- var typeHandleValue = Type.GetTypeHandle (v);
- var isDeclaredType = typeHandleValue.Equals (CodeInterpreter.ConvertValue (v, memberType, Globals.TypeOfObject));
- try {
- methodInfo.Invoke (context, new object [] {writer, memberValue != null ? v : null, isDeclaredType, writeXsiType, DataContract.GetId (memberType.TypeHandle), memberType.TypeHandle});
- } catch (TargetInvocationException ex) {
- if (ex.InnerException != null)
- throw ex.InnerException;
- else
- throw;
- }
- }
- object UnwrapNullableObject(Func<object> memberValue, ref Type memberType, out bool isNull)// Leaves !HasValue on stack
- {
- object v = memberValue ();
- isNull = false;
- while (memberType.IsGenericType && memberType.GetGenericTypeDefinition () == Globals.TypeOfNullable) {
- Type innerType = memberType.GetGenericArguments () [0];
- if ((bool) XmlFormatGeneratorStatics.GetHasValueMethod.MakeGenericMethod (innerType).Invoke (null, new object [] {v}))
- v = XmlFormatGeneratorStatics.GetNullableValueMethod.MakeGenericMethod (innerType).Invoke (null, new object [] {v});
- else {
- isNull = true;
- v = XmlFormatGeneratorStatics.GetDefaultValueMethod.MakeGenericMethod (memberType).Invoke (null, new object [0]);
- }
- memberType = innerType;
- }
-
- return v;
- }
- bool TryWritePrimitive(Type type, Func<object> value, MemberInfo memberInfo, int? arrayItemIndex, XmlDictionaryString name, int nameIndex)
- {
- PrimitiveDataContract primitiveContract = PrimitiveDataContract.GetPrimitiveDataContract(type);
- if (primitiveContract == null || primitiveContract.UnderlyingType == Globals.TypeOfObject)
- return false;
- object callee = null;
- var args = new List<object> ();
- // load writer
- if (type.IsValueType)
- callee = writer;
- else {
- callee = context;
- args.Add (writer);
- }
- // load primitive value
- if (value != null)
- args.Add (value ());
- else if (memberInfo != null)
- args.Add (CodeInterpreter.GetMember (memberInfo, objLocal));
- else
- args.Add (((Array) objLocal).GetValue (new int [] {(int) arrayItemIndex}));
- // load name
- if (name != null)
- args.Add (name);
- else
- args.Add (memberNames [nameIndex]);
- // load namespace
- args.Add (null);
- // call method to write primitive
- primitiveContract.XmlFormatWriterMethod.Invoke (callee, args.ToArray ());
- return true;
- }
- bool TryWritePrimitiveArray (Type type, Type itemType, Func<object> value, XmlDictionaryString itemName)
- {
- PrimitiveDataContract primitiveContract = PrimitiveDataContract.GetPrimitiveDataContract(itemType);
- if (primitiveContract == null)
- return false;
- string writeArrayMethod = null;
- switch (Type.GetTypeCode(itemType))
- {
- case TypeCode.Boolean:
- writeArrayMethod = "WriteJsonBooleanArray";
- break;
- case TypeCode.DateTime:
- writeArrayMethod = "WriteJsonDateTimeArray";
- break;
- case TypeCode.Decimal:
- writeArrayMethod = "WriteJsonDecimalArray";
- break;
- case TypeCode.Int32:
- writeArrayMethod = "WriteJsonInt32Array";
- break;
- case TypeCode.Int64:
- writeArrayMethod = "WriteJsonInt64Array";
- break;
- case TypeCode.Single:
- writeArrayMethod = "WriteJsonSingleArray";
- break;
- case TypeCode.Double:
- writeArrayMethod = "WriteJsonDoubleArray";
- break;
- default:
- break;
- }
- if (writeArrayMethod != null)
- {
- WriteArrayAttribute ();
- typeof(JsonWriterDelegator).GetMethod(writeArrayMethod, Globals.ScanAllMembers, null, new Type[] { type, typeof(XmlDictionaryString), typeof(XmlDictionaryString) }, null).Invoke (writer, new object [] {value (), itemName, null});
- return true;
- }
- return false;
- }
- object LoadMemberValue (DataMember member)
- {
- return CodeInterpreter.GetMember (member.MemberInfo, objLocal);
- }
- }
- }
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