JsonClassDataContract.cs source code in C# .NET

Source code for the .NET framework in C#

                        

Code:

/ WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / NetFx35 / System.ServiceModel.Web / System / Runtime / Serialization / Json / JsonClassDataContract.cs / 1 / 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 
    {
        //  
        // 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;
 
        // 
        // Critical - initializes SecurityCritical field 'helper' 
        // Safe - doesn't leak anything 
        // 
        [SecurityCritical, SecurityTreatAsSafe] 
        public JsonClassDataContract(ClassDataContract traditionalDataContract) : base(new JsonClassDataContractCriticalHelper(traditionalDataContract))
        {
            this.helper = base.Helper as JsonClassDataContractCriticalHelper;
        } 

        internal JsonFormatClassReaderDelegate JsonFormatReaderDelegate 
        { 
            // 
            // Critical - fetches the critical JsonFormatReaderDelegate property 
            // Safe - JsonFormatReaderDelegate only needs to be protected for write
            // 
            [SecurityCritical, SecurityTreatAsSafe]
            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 
        {
            //  
            // Critical - fetches the critical JsonFormatWriterDelegate property 
            // Safe - JsonFormatWriterDelegate only needs to be protected for write
            //  
            [SecurityCritical, SecurityTreatAsSafe]
            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
        {
            //  
            // Critical - fetches the critical MemberNames property
            // Safe - MemberNames only needs to be protected for write 
            //  
            [SecurityCritical, SecurityTreatAsSafe]
            get { return this.helper.MemberNames; } 
        }

        internal override string TypeName
        { 
            // 
            // Critical - fetches the critical TypeName property 
            // Safe - TypeName only needs to be protected for write 
            // 
            [SecurityCritical, SecurityTreatAsSafe] 
            get { return this.helper.TypeName; }
        }

 
        ClassDataContract TraditionalClassDataContract
        { 
            //  
            // Critical - fetches the critical TraditionalClassDataContract property
            // Safe - TraditionalClassDataContract only needs to be protected for write 
            // 
            [SecurityCritical, SecurityTreatAsSafe]
            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);
        } 

        // 
        // Critical - holds all state used for (de)serializing types.
        //            since the data is cached statically, we lock down access to it. 
        // 
        [SecurityCritical(SecurityCriticalScope.Everything)] 
        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; 
                    Dictionary memberTable = new Dictionary(memberCount);
                    XmlDictionaryString[] decodedMemberNames = new XmlDictionaryString[memberCount]; 
                    for (int i = 0; i < memberCount; i++) 
                    {
                        if (memberTable.ContainsKey(traditionalClassDataContract.MemberNames[i].Value)) 
                        {
                            throw System.ServiceModel.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SerializationException(SR2.GetString(SR2.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.
// Copyright (c) Microsoft Corporation. All rights reserved.
                        

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