XmlBoundElement.cs

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using System.Data;
using System.Diagnostics.CodeAnalysis;
using System.Threading;
 
namespace System.Xml;
 
internal sealed class XmlBoundElement : XmlElement
{
    private DataRow _row;
 
    private ElementState _state;
 
    public override XmlAttributeCollection Attributes
    {
        [UnconditionalSuppressMessage("ReflectionAnalysis", "IL2026:RequiresUnreferencedCode", Justification = "This whole class is unsafe. Constructors are marked as such.")]
        get
        {
            AutoFoliate();
            return base.Attributes;
        }
    }
 
    public override bool HasAttributes => Attributes.Count > 0;
 
    public override XmlNode FirstChild
    {
        [UnconditionalSuppressMessage("ReflectionAnalysis", "IL2026:RequiresUnreferencedCode", Justification = "This whole class is unsafe. Constructors are marked as such.")]
        get
        {
            AutoFoliate();
            return base.FirstChild;
        }
    }
 
    internal XmlNode SafeFirstChild => base.FirstChild;
 
    public override XmlNode LastChild
    {
        [UnconditionalSuppressMessage("ReflectionAnalysis", "IL2026:RequiresUnreferencedCode", Justification = "This whole class is unsafe. Constructors are marked as such.")]
        get
        {
            AutoFoliate();
            return base.LastChild;
        }
    }
 
    public override XmlNode PreviousSibling
    {
        [UnconditionalSuppressMessage("ReflectionAnalysis", "IL2026:RequiresUnreferencedCode", Justification = "This whole class is unsafe. Constructors are marked as such.")]
        get
        {
            XmlNode previousSibling = base.PreviousSibling;
            if (previousSibling == null && ParentNode is XmlBoundElement xmlBoundElement)
            {
                xmlBoundElement.AutoFoliate();
                return base.PreviousSibling;
            }
            return previousSibling;
        }
    }
 
    internal XmlNode SafePreviousSibling => base.PreviousSibling;
 
    public override XmlNode NextSibling
    {
        [UnconditionalSuppressMessage("ReflectionAnalysis", "IL2026:RequiresUnreferencedCode", Justification = "This whole class is unsafe. Constructors are marked as such.")]
        get
        {
            XmlNode nextSibling = base.NextSibling;
            if (nextSibling == null && ParentNode is XmlBoundElement xmlBoundElement)
            {
                xmlBoundElement.AutoFoliate();
                return base.NextSibling;
            }
            return nextSibling;
        }
    }
 
    internal XmlNode SafeNextSibling => base.NextSibling;
 
    public override bool HasChildNodes
    {
        [UnconditionalSuppressMessage("ReflectionAnalysis", "IL2026:RequiresUnreferencedCode", Justification = "This whole class is unsafe. Constructors are marked as such.")]
        get
        {
            AutoFoliate();
            return base.HasChildNodes;
        }
    }
 
    public override string InnerXml
    {
        get
        {
            return base.InnerXml;
        }
        [UnconditionalSuppressMessage("ReflectionAnalysis", "IL2026:RequiresUnreferencedCode", Justification = "This whole class is unsafe. Constructors are marked as such.")]
        set
        {
            RemoveAllChildren();
            XmlDataDocument xmlDataDocument = (XmlDataDocument)OwnerDocument;
            bool ignoreXmlEvents = xmlDataDocument.IgnoreXmlEvents;
            bool ignoreDataSetEvents = xmlDataDocument.IgnoreDataSetEvents;
            xmlDataDocument.IgnoreXmlEvents = true;
            xmlDataDocument.IgnoreDataSetEvents = true;
            base.InnerXml = value;
            xmlDataDocument.SyncTree(this);
            xmlDataDocument.IgnoreDataSetEvents = ignoreDataSetEvents;
            xmlDataDocument.IgnoreXmlEvents = ignoreXmlEvents;
        }
    }
 
    internal DataRow Row
    {
        get
        {
            return _row;
        }
        set
        {
            _row = value;
        }
    }
 
    internal bool IsFoliated
    {
        get
        {
            while (_state == ElementState.Foliating || _state == ElementState.Defoliating)
            {
                Thread.Sleep(0);
            }
            return _state != ElementState.Defoliated;
        }
    }
 
    internal ElementState ElementState
    {
        get
        {
            return _state;
        }
        set
        {
            _state = value;
        }
    }
 
    [RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]
    internal XmlBoundElement(string prefix, string localName, string namespaceURI, XmlDocument doc)
        : base(prefix, localName, namespaceURI, doc)
    {
        _state = ElementState.None;
    }
 
    [UnconditionalSuppressMessage("ReflectionAnalysis", "IL2026:RequiresUnreferencedCode", Justification = "This whole class is unsafe. Constructors are marked as such.")]
    public override XmlNode InsertBefore(XmlNode newChild, XmlNode refChild)
    {
        AutoFoliate();
        return base.InsertBefore(newChild, refChild);
    }
 
    [UnconditionalSuppressMessage("ReflectionAnalysis", "IL2026:RequiresUnreferencedCode", Justification = "This whole class is unsafe. Constructors are marked as such.")]
    public override XmlNode InsertAfter(XmlNode newChild, XmlNode refChild)
    {
        AutoFoliate();
        return base.InsertAfter(newChild, refChild);
    }
 
    [UnconditionalSuppressMessage("ReflectionAnalysis", "IL2026:RequiresUnreferencedCode", Justification = "This whole class is unsafe. Constructors are marked as such.")]
    public override XmlNode ReplaceChild(XmlNode newChild, XmlNode oldChild)
    {
        AutoFoliate();
        return base.ReplaceChild(newChild, oldChild);
    }
 
    [UnconditionalSuppressMessage("ReflectionAnalysis", "IL2026:RequiresUnreferencedCode", Justification = "This whole class is unsafe. Constructors are marked as such.")]
    public override XmlNode AppendChild(XmlNode newChild)
    {
        AutoFoliate();
        return base.AppendChild(newChild);
    }
 
    internal void RemoveAllChildren()
    {
        XmlNode xmlNode = FirstChild;
        XmlNode xmlNode2 = null;
        while (xmlNode != null)
        {
            xmlNode2 = xmlNode.NextSibling;
            RemoveChild(xmlNode);
            xmlNode = xmlNode2;
        }
    }
 
    [UnconditionalSuppressMessage("ReflectionAnalysis", "IL2026:RequiresUnreferencedCode", Justification = "This whole class is unsafe. Constructors are marked as such.")]
    internal void Foliate(ElementState newState)
    {
        ((XmlDataDocument)OwnerDocument)?.Foliate(this, newState);
    }
 
    [RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]
    private void AutoFoliate()
    {
        XmlDataDocument xmlDataDocument = (XmlDataDocument)OwnerDocument;
        xmlDataDocument?.Foliate(this, xmlDataDocument.AutoFoliationState);
    }
 
    public override XmlNode CloneNode(bool deep)
    {
        XmlDataDocument xmlDataDocument = (XmlDataDocument)OwnerDocument;
        ElementState autoFoliationState = xmlDataDocument.AutoFoliationState;
        xmlDataDocument.AutoFoliationState = ElementState.WeakFoliation;
        try
        {
            Foliate(ElementState.WeakFoliation);
            return (XmlElement)base.CloneNode(deep);
        }
        finally
        {
            xmlDataDocument.AutoFoliationState = autoFoliationState;
        }
    }
 
    [UnconditionalSuppressMessage("ReflectionAnalysis", "IL2026:RequiresUnreferencedCode", Justification = "This whole class is unsafe. Constructors are marked as such.")]
    public override void WriteContentTo(XmlWriter w)
    {
        DataPointer dataPointer = new DataPointer((XmlDataDocument)OwnerDocument, this);
        try
        {
            dataPointer.AddPointer();
            WriteBoundElementContentTo(dataPointer, w);
        }
        finally
        {
            dataPointer.SetNoLongerUse();
        }
    }
 
    [UnconditionalSuppressMessage("ReflectionAnalysis", "IL2026:RequiresUnreferencedCode", Justification = "This whole class is unsafe. Constructors are marked as such.")]
    public override void WriteTo(XmlWriter w)
    {
        DataPointer dataPointer = new DataPointer((XmlDataDocument)OwnerDocument, this);
        try
        {
            dataPointer.AddPointer();
            WriteRootBoundElementTo(dataPointer, w);
        }
        finally
        {
            dataPointer.SetNoLongerUse();
        }
    }
 
    [RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]
    private void WriteRootBoundElementTo(DataPointer dp, XmlWriter w)
    {
        XmlDataDocument xmlDataDocument = (XmlDataDocument)OwnerDocument;
        w.WriteStartElement(dp.Prefix, dp.LocalName, dp.NamespaceURI);
        int attributeCount = dp.AttributeCount;
        bool flag = false;
        if (attributeCount > 0)
        {
            for (int i = 0; i < attributeCount; i++)
            {
                dp.MoveToAttribute(i);
                if (dp.Prefix == "xmlns" && dp.LocalName == "xsi")
                {
                    flag = true;
                }
                WriteTo(dp, w);
                dp.MoveToOwnerElement();
            }
        }
        if (!flag && xmlDataDocument._bLoadFromDataSet && xmlDataDocument._bHasXSINIL)
        {
            w.WriteAttributeString("xmlns", "xsi", "http://www.w3.org/2000/xmlns/", "http://www.w3.org/2001/XMLSchema-instance");
        }
        WriteBoundElementContentTo(dp, w);
        if (dp.IsEmptyElement)
        {
            w.WriteEndElement();
        }
        else
        {
            w.WriteFullEndElement();
        }
    }
 
    [RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]
    private static void WriteBoundElementTo(DataPointer dp, XmlWriter w)
    {
        w.WriteStartElement(dp.Prefix, dp.LocalName, dp.NamespaceURI);
        int attributeCount = dp.AttributeCount;
        if (attributeCount > 0)
        {
            for (int i = 0; i < attributeCount; i++)
            {
                dp.MoveToAttribute(i);
                WriteTo(dp, w);
                dp.MoveToOwnerElement();
            }
        }
        WriteBoundElementContentTo(dp, w);
        if (dp.IsEmptyElement)
        {
            w.WriteEndElement();
        }
        else
        {
            w.WriteFullEndElement();
        }
    }
 
    [RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]
    private static void WriteBoundElementContentTo(DataPointer dp, XmlWriter w)
    {
        if (!dp.IsEmptyElement && dp.MoveToFirstChild())
        {
            do
            {
                WriteTo(dp, w);
            }
            while (dp.MoveToNextSibling());
            dp.MoveToParent();
        }
    }
 
    [RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]
    private static void WriteTo(DataPointer dp, XmlWriter w)
    {
        switch (dp.NodeType)
        {
        case XmlNodeType.Attribute:
            if (dp.IsDefault)
            {
                break;
            }
            w.WriteStartAttribute(dp.Prefix, dp.LocalName, dp.NamespaceURI);
            if (dp.MoveToFirstChild())
            {
                do
                {
                    WriteTo(dp, w);
                }
                while (dp.MoveToNextSibling());
                dp.MoveToParent();
            }
            w.WriteEndAttribute();
            break;
        case XmlNodeType.Element:
            WriteBoundElementTo(dp, w);
            break;
        case XmlNodeType.Text:
            w.WriteString(dp.Value);
            break;
        default:
            if (dp.GetNode() != null)
            {
                dp.GetNode().WriteTo(w);
            }
            break;
        }
    }
 
    public override XmlNodeList GetElementsByTagName(string name)
    {
        XmlNodeList elementsByTagName = base.GetElementsByTagName(name);
        _ = elementsByTagName.Count;
        return elementsByTagName;
    }
}