Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WCF / Serialization / System / Runtime / Serialization / Json / JsonClassDataContract.cs / 1305376 / JsonClassDataContract.cs
//---------------------------------------------------------------- // Copyright (c) Microsoft Corporation. All rights reserved. //--------------------------------------------------------------- namespace System.Runtime.Serialization.Json { using System.Threading; using System.Xml; using System.Diagnostics; using System.ServiceModel; using System.Collections.Generic; using System.Security; class JsonClassDataContract : JsonDataContract { [Fx.Tag.SecurityNote(Critical = "Holds instance of CriticalHelper which keeps state that is cached statically for serialization." + "Static fields are marked SecurityCritical or readonly to prevent data from being modified or leaked to other components in appdomain.")] [SecurityCritical] JsonClassDataContractCriticalHelper helper; [Fx.Tag.SecurityNote(Critical = "Initializes SecurityCritical field 'helper'.", Safe = "Doesn't leak anything.")] [SecuritySafeCritical] public JsonClassDataContract(ClassDataContract traditionalDataContract) : base(new JsonClassDataContractCriticalHelper(traditionalDataContract)) { this.helper = base.Helper as JsonClassDataContractCriticalHelper; } internal JsonFormatClassReaderDelegate JsonFormatReaderDelegate { [Fx.Tag.SecurityNote(Critical = "Fetches the critical JsonFormatReaderDelegate property.", Safe = "JsonFormatReaderDelegate only needs to be protected for write.")] [SecuritySafeCritical] get { if (helper.JsonFormatReaderDelegate == null) { lock (this) { if (helper.JsonFormatReaderDelegate == null) { JsonFormatClassReaderDelegate tempDelegate = new JsonFormatReaderGenerator().GenerateClassReader(TraditionalClassDataContract); Thread.MemoryBarrier(); helper.JsonFormatReaderDelegate = tempDelegate; } } } return helper.JsonFormatReaderDelegate; } } internal JsonFormatClassWriterDelegate JsonFormatWriterDelegate { [Fx.Tag.SecurityNote(Critical = "Fetches the critical JsonFormatWriterDelegate property.", Safe = "JsonFormatWriterDelegate only needs to be protected for write.")] [SecuritySafeCritical] get { if (helper.JsonFormatWriterDelegate == null) { lock (this) { if (helper.JsonFormatWriterDelegate == null) { JsonFormatClassWriterDelegate tempDelegate = new JsonFormatWriterGenerator().GenerateClassWriter(TraditionalClassDataContract); Thread.MemoryBarrier(); helper.JsonFormatWriterDelegate = tempDelegate; } } } return helper.JsonFormatWriterDelegate; } } internal XmlDictionaryString[] MemberNames { [Fx.Tag.SecurityNote(Critical = "Fetches the critical MemberNames property.", Safe = "MemberNames only needs to be protected for write.")] [SecuritySafeCritical] get { return this.helper.MemberNames; } } internal override string TypeName { [Fx.Tag.SecurityNote(Critical = "Fetches the critical TypeName property.", Safe = "TypeName only needs to be protected for write.")] [SecuritySafeCritical] get { return this.helper.TypeName; } } ClassDataContract TraditionalClassDataContract { [Fx.Tag.SecurityNote(Critical = "Fetches the critical TraditionalClassDataContract property.", Safe = "TraditionalClassDataContract only needs to be protected for write.")] [SecuritySafeCritical] get { return this.helper.TraditionalClassDataContract; } } public override object ReadJsonValueCore(XmlReaderDelegator jsonReader, XmlObjectSerializerReadContextComplexJson context) { jsonReader.Read(); object o = JsonFormatReaderDelegate(jsonReader, context, XmlDictionaryString.Empty, MemberNames); jsonReader.ReadEndElement(); return o; } public override void WriteJsonValueCore(XmlWriterDelegator jsonWriter, object obj, XmlObjectSerializerWriteContextComplexJson context, RuntimeTypeHandle declaredTypeHandle) { jsonWriter.WriteAttributeString(null, JsonGlobals.typeString, null, JsonGlobals.objectString); JsonFormatWriterDelegate(jsonWriter, obj, context, TraditionalClassDataContract, MemberNames); } [Fx.Tag.SecurityNote(Critical = "Holds all state used for (de)serializing types." + "Since the data is cached statically, we lock down access to it.")] #pragma warning disable 618 // have not moved to the v4 security model yet [SecurityCritical(SecurityCriticalScope.Everything)] #pragma warning restore 618 class JsonClassDataContractCriticalHelper : JsonDataContractCriticalHelper { JsonFormatClassReaderDelegate jsonFormatReaderDelegate; JsonFormatClassWriterDelegate jsonFormatWriterDelegate; XmlDictionaryString[] memberNames; ClassDataContract traditionalClassDataContract; string typeName; public JsonClassDataContractCriticalHelper(ClassDataContract traditionalDataContract) : base(traditionalDataContract) { this.typeName = string.IsNullOrEmpty(traditionalDataContract.Namespace.Value) ? traditionalDataContract.Name.Value : string.Concat(traditionalDataContract.Name.Value, JsonGlobals.NameValueSeparatorString, XmlObjectSerializerWriteContextComplexJson.TruncateDefaultDataContractNamespace(traditionalDataContract.Namespace.Value)); this.traditionalClassDataContract = traditionalDataContract; CopyMembersAndCheckDuplicateNames(); } internal JsonFormatClassReaderDelegate JsonFormatReaderDelegate { get { return this.jsonFormatReaderDelegate; } set { this.jsonFormatReaderDelegate = value; } } internal JsonFormatClassWriterDelegate JsonFormatWriterDelegate { get { return this.jsonFormatWriterDelegate; } set { this.jsonFormatWriterDelegate = value; } } internal XmlDictionaryString[] MemberNames { get { return this.memberNames; } } internal ClassDataContract TraditionalClassDataContract { get { return this.traditionalClassDataContract; } } void CopyMembersAndCheckDuplicateNames() { if (traditionalClassDataContract.MemberNames != null) { int memberCount = traditionalClassDataContract.MemberNames.Length; DictionarymemberTable = new Dictionary (memberCount); XmlDictionaryString[] decodedMemberNames = new XmlDictionaryString[memberCount]; for (int i = 0; i < memberCount; i++) { if (memberTable.ContainsKey(traditionalClassDataContract.MemberNames[i].Value)) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SerializationException(SR.GetString(SR.JsonDuplicateMemberNames, DataContract.GetClrTypeFullName(traditionalClassDataContract.UnderlyingType), traditionalClassDataContract.MemberNames[i].Value))); } else { memberTable.Add(traditionalClassDataContract.MemberNames[i].Value, null); decodedMemberNames[i] = DataContractJsonSerializer.ConvertXmlNameToJsonName(traditionalClassDataContract.MemberNames[i]); } } this.memberNames = decodedMemberNames; } } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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