Remove ReflectionXmlSerializationReader and ReflectionXmlSerializationWriter from SGEN (#18874)

* Remove ReflectionXmlSerializationReader and ReflectionXmlSerializationWriter from the XmlSerializerGenerator.

* Remove the XmlSerializationPrimitiveReader class in sgen.

Author: huanwu

src/Microsoft.XmlSerializer.Generator/src/Microsoft.XmlSerializer.Generator.csproj

@@ -69,12 +69,6 @@
     <Compile Include="$(SourceDir)\System\Xml\Serialization\PrimitiveXmlSerializers.cs">
       <Link>System\Xml\Serialization\PrimitiveXmlSerializers.cs</Link>
     </Compile>
-    <Compile Include="$(SourceDir)\System\Xml\Serialization\ReflectionXmlSerializationReader.cs">
-      <Link>System\Xml\Serialization\ReflectionXmlSerializationReader.cs</Link>
-    </Compile>
-    <Compile Include="$(SourceDir)\System\Xml\Serialization\ReflectionXmlSerializationWriter.cs">
-      <Link>System\Xml\Serialization\ReflectionXmlSerializationWriter.cs</Link>
-    </Compile>
     <Compile Include="$(SourceDir)\System\Xml\Serialization\SoapAttributeAttribute.cs">
       <Link>System\Xml\Serialization\SoapAttributeAttribute.cs</Link>
     </Compile>

src/System.Private.Xml/src/System/Xml/Serialization/PrimitiveXmlSerializers.cs

@@ -236,11 +236,8 @@ protected override void InitCallbacks()
         }
     }
 
-#if XMLSERIALIZERGENERATOR
-    internal class XmlSerializationPrimitiveReader : Microsoft.XmlSerializer.Generator.XmlSerializationReader
-#else
+#if !XMLSERIALIZERGENERATOR
     internal class XmlSerializationPrimitiveReader : System.Xml.Serialization.XmlSerializationReader
-#endif
     {
         internal object Read_string()
         {
@@ -762,4 +759,5 @@ protected override void InitIDs()
             _id1_QName = Reader.NameTable.Add(@"QName");
         }
     }
+#endif
 }

src/System.Private.Xml/src/System/Xml/Serialization/XmlSerializationReader.cs

@@ -188,6 +188,7 @@ internal void Init(XmlReader r, XmlDeserializationEvents events, string encoding
             InitIDs();
         }
 
+#if !XMLSERIALIZERGENERATOR
         protected bool DecodeName
         {
             get
@@ -223,9 +224,7 @@ protected XmlDocument Document
                 if (_d == null)
                 {
                     _d = new XmlDocument(_r.NameTable);
-#if !XMLSERIALIZERGENERATOR
                     _d.SetBaseURI(_r.BaseURI);
-#endif
                 }
                 return _d;
             }
@@ -2145,6 +2144,7 @@ public object CollectionItems
                 get { return _collectionItems; }
             }
         }
+#endif
     }
 
     ///<internalonly/>

src/System.Private.Xml/src/System/Xml/Serialization/XmlSerializer.cs

@@ -33,7 +33,9 @@ public struct XmlDeserializationEvents
         private XmlAttributeEventHandler _onUnknownAttribute;
         private XmlElementEventHandler _onUnknownElement;
         private UnreferencedObjectEventHandler _onUnreferencedObject;
+#if !XMLSERIALIZERGENERATOR
         internal object sender;
+#endif
 
         /// <include file='doc\XmlSerializer.uex' path='docs/doc[@for="XmlDeserializationEvents.OnUnknownNode"]/*' />
         public XmlNodeEventHandler OnUnknownNode
@@ -361,6 +363,7 @@ internal static TempAssembly GenerateTempAssembly(XmlMapping xmlMapping, Type ty
             return new TempAssembly(new XmlMapping[] { xmlMapping }, new Type[] { type }, defaultNamespace, location);
         }
 
+#if !XMLSERIALIZERGENERATOR
         /// <include file='doc\XmlSerializer.uex' path='docs/doc[@for="XmlSerializer.Serialize"]/*' />
         /// <devdoc>
         ///    <para>[To be supplied.]</para>
@@ -681,6 +684,7 @@ public object Deserialize(XmlReader xmlReader, string encodingStyle, XmlDeserial
                 }
             }
         }
+#endif
 
         private static bool ShouldUseReflectionBasedSerialization(XmlMapping mapping)
         {
@@ -1072,6 +1076,7 @@ private static XmlTypeMapping GetKnownMapping(Type type, string ns)
             return mapping;
         }
 
+#if !XMLSERIALIZERGENERATOR
         private void SerializePrimitive(XmlWriter xmlWriter, object o, XmlSerializerNamespaces namespaces)
         {
             XmlSerializationPrimitiveWriter writer = new XmlSerializationPrimitiveWriter();
@@ -1228,6 +1233,7 @@ private object DeserializePrimitive(XmlReader xmlReader, XmlDeserializationEvent
             return o;
         }
 
+#endif
         private class XmlSerializerMappingKey
         {
             public XmlMapping Mapping;