System.Xml.Serialization.XmlSerializationReaderCodeGen.WriteEnumAndArrayTypes C# (CSharp) Method

        private void WriteEnumAndArrayTypes()
        {
            foreach (TypeScope scope in Scopes)
            {
                foreach (Mapping m in scope.TypeMappings)
                {
                    if (m.IsSoap)
                        continue;
                    if (m is EnumMapping)
                    {
                        EnumMapping mapping = (EnumMapping)m;
                        Writer.Write("else if (");
                        WriteQNameEqual("xsiType", mapping.TypeName, mapping.Namespace);
                        Writer.WriteLine(") {");
                        Writer.Indent++;
                        Writer.WriteLine("Reader.ReadStartElement();");
                        string methodName = ReferenceMapping(mapping);
#if DEBUG
                            // use exception in the place of Debug.Assert to avoid throwing asserts from a server process such as aspnet_ewp.exe
                            if (methodName == null) throw new InvalidOperationException(SR.Format(SR.XmlInternalErrorMethod, mapping.TypeDesc.Name));
#endif
                        Writer.Write("object e = ");
                        Writer.Write(methodName);
                        Writer.WriteLine("(CollapseWhitespace(Reader.ReadString()));");
                        Writer.WriteLine("ReadEndElement();");
                        Writer.WriteLine("return e;");
                        Writer.Indent--;
                        Writer.WriteLine("}");
                    }
                    else if (m is ArrayMapping)
                    {
                        ArrayMapping mapping = (ArrayMapping)m;
                        if (mapping.TypeDesc.HasDefaultConstructor)
                        {
                            Writer.Write("else if (");
                            WriteQNameEqual("xsiType", mapping.TypeName, mapping.Namespace);
                            Writer.WriteLine(") {");
                            Writer.Indent++;
                            MemberMapping memberMapping = new MemberMapping();
                            memberMapping.TypeDesc = mapping.TypeDesc;
                            memberMapping.Elements = mapping.Elements;
                            Member member = new Member(this, "a", "z", 0, memberMapping);

                            TypeDesc td = mapping.TypeDesc;
                            string fullTypeName = mapping.TypeDesc.CSharpName;
                            if (td.UseReflection)
                            {
                                if (td.IsArray)
                                    Writer.Write(typeof(Array).FullName);
                                else
                                    Writer.Write("object");
                            }
                            else
                                Writer.Write(fullTypeName);
                            Writer.Write(" a = ");
                            if (mapping.TypeDesc.IsValueType)
                            {
                                Writer.Write(RaCodeGen.GetStringForCreateInstance(fullTypeName, td.UseReflection, false, false));
                                Writer.WriteLine(";");
                            }
                            else
                                Writer.WriteLine("null;");

                            WriteArray(member.Source, member.ArrayName, mapping, false, false, -1);
                            Writer.WriteLine("return a;");
                            Writer.Indent--;
                            Writer.WriteLine("}");
                        }
                    }
                }
            }
        }