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