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   1 // Licensed to the .NET Foundation under one or more agreements.
   2 // The .NET Foundation licenses this file to you under the MIT license.
   3
   4 using System;
   5 using System.Runtime.Serialization.DataContracts;
   6 using System.Xml;
   7
   8
   9 namespace System.Runtime.Serialization
  10 {
  11     internal sealed class XmlSerializableWriter : XmlWriter
  12     {
  13         private XmlWriter _xmlWriter = null!; // initialized in BeginWrite
  14         private int _depth;
  15         private object? _obj;
  16
  17         internal void BeginWrite(XmlWriter xmlWriter, object obj)
  18         {
  19             _depth = 0;
  20             _xmlWriter = xmlWriter;
  21             _obj = obj;
  22         }
  23
  24         internal void EndWrite()
  25         {
  26             if (_depth != 0)
  27                 throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(XmlObjectSerializer.CreateSerializationException(SR.Format(SR.IXmlSerializableMissingEndElements, (_obj == null ? string.Empty : DataContract.GetClrTypeFullName(_obj.GetType())))));
  28             _obj = null;
  29         }
  30
  31         public override void WriteStartDocument()
  32         {
  33             if (WriteState == WriteState.Start)
  34                 _xmlWriter.WriteStartDocument();
  35         }
  36         public override void WriteEndDocument() { _xmlWriter.WriteEndDocument(); }
  37         public override void WriteStartDocument(bool standalone)
  38         {
  39             if (WriteState == WriteState.Start)
  40                 _xmlWriter.WriteStartDocument(standalone);
  41         }
  42         public override void WriteDocType(string name, string? pubid, string? sysid, string? subset)
  43         {
  44             // XmlSerializer does not write doc type
  45         }
  46
  47         public override void WriteStartElement(string? prefix, string localName, string? ns)
  48         {
  49             _xmlWriter.WriteStartElement(prefix, localName, ns);
  50             _depth++;
  51         }
  52
  53         public override void WriteEndElement()
  54         {
  55             if (_depth == 0)
  56                 throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(XmlObjectSerializer.CreateSerializationException(SR.Format(SR.IXmlSerializableWritePastSubTree, (_obj == null ? string.Empty : DataContract.GetClrTypeFullName(_obj.GetType())))));
  57             _xmlWriter.WriteEndElement();
  58             _depth--;
  59         }
  60
  61         public override void WriteFullEndElement()
  62         {
  63             if (_depth == 0)
  64                 throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(XmlObjectSerializer.CreateSerializationException(SR.Format(SR.IXmlSerializableWritePastSubTree, (_obj == null ? string.Empty : DataContract.GetClrTypeFullName(_obj.GetType())))));
  65             _xmlWriter.WriteFullEndElement();
  66             _depth--;
  67         }
  68
  69         public override void Close()
  70         {
  71             throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(XmlObjectSerializer.CreateSerializationException(SR.IXmlSerializableIllegalOperation));
  72         }
  73
  74         public override void WriteStartAttribute(string? prefix, string localName, string? ns)
  75         {
  76             _xmlWriter.WriteStartAttribute(prefix, localName, ns);
  77         }
  78
  79         public override void WriteEndAttribute() { _xmlWriter.WriteEndAttribute(); }
  80         public override void WriteCData(string? text) { _xmlWriter.WriteCData(text); }
  81         public override void WriteComment(string? text) { _xmlWriter.WriteComment(text); }
  82         public override void WriteProcessingInstruction(string name, string? text) { _xmlWriter.WriteProcessingInstruction(name, text); }
  83         public override void WriteEntityRef(string name) { _xmlWriter.WriteEntityRef(name); }
  84         public override void WriteCharEntity(char ch) { _xmlWriter.WriteCharEntity(ch); }
  85         public override void WriteWhitespace(string? ws) { _xmlWriter.WriteWhitespace(ws); }
  86         public override void WriteString(string? text) { _xmlWriter.WriteString(text); }
  87         public override void WriteSurrogateCharEntity(char lowChar, char highChar) { _xmlWriter.WriteSurrogateCharEntity(lowChar, highChar); }
  88         public override void WriteChars(char[] buffer, int index, int count) { _xmlWriter.WriteChars(buffer, index, count); }
  89         public override void WriteRaw(char[] buffer, int index, int count) { _xmlWriter.WriteRaw(buffer, index, count); }
  90         public override void WriteRaw(string data) { _xmlWriter.WriteRaw(data); }
  91         public override void WriteBase64(byte[] buffer, int index, int count) { _xmlWriter.WriteBase64(buffer, index, count); }
  92         public override void WriteBinHex(byte[] buffer, int index, int count) { _xmlWriter.WriteBinHex(buffer, index, count); }
  93         public override WriteState WriteState { get { return _xmlWriter.WriteState; } }
  94         public override void Flush() { _xmlWriter.Flush(); }
  95         public override void WriteName(string name) { _xmlWriter.WriteName(name); }
  96         public override void WriteQualifiedName(string localName, string? ns) { _xmlWriter.WriteQualifiedName(localName, ns); }
  97         public override string? LookupPrefix(string ns) { return _xmlWriter.LookupPrefix(ns); }
  98         public override XmlSpace XmlSpace { get { return _xmlWriter.XmlSpace; } }
  99         public override string? XmlLang { get { return _xmlWriter.XmlLang; } }
 100         public override void WriteNmToken(string name) { _xmlWriter.WriteNmToken(name); }
 101     }
 102 }