using System.Collections.Generic; using System.Runtime.CompilerServices; using System.Xml.Linq; namespace Newtonsoft.Json.Converters { [System.Runtime.CompilerServices.NullableContext(1)] [System.Runtime.CompilerServices.Nullable(0)] internal class XContainerWrapper : XObjectWrapper { [System.Runtime.CompilerServices.Nullable(new byte[] { 2, 1 })] private List<IXmlNode> _childNodes; private XContainer Container => (XContainer)base.WrappedNode; public override List<IXmlNode> ChildNodes { get { if (_childNodes == null) { if (!HasChildNodes) _childNodes = XmlNodeConverter.EmptyChildNodes; else { _childNodes = new List<IXmlNode>(); foreach (XNode item in Container.Nodes()) { _childNodes.Add(WrapNode(item)); } } } return _childNodes; } } protected virtual bool HasChildNodes => Container.LastNode != null; [System.Runtime.CompilerServices.Nullable(2)] public override IXmlNode ParentNode { [System.Runtime.CompilerServices.NullableContext(2)] get { if (Container.Parent == null) return null; return WrapNode(Container.Parent); } } public XContainerWrapper(XContainer container) : base(container) { } internal static IXmlNode WrapNode(XObject node) { XDocument xDocument = node as XDocument; if (xDocument != null) return new XDocumentWrapper(xDocument); XElement xElement = node as XElement; if (xElement != null) return new XElementWrapper(xElement); XContainer xContainer = node as XContainer; if (xContainer != null) return new XContainerWrapper(xContainer); XProcessingInstruction xProcessingInstruction = node as XProcessingInstruction; if (xProcessingInstruction != null) return new XProcessingInstructionWrapper(xProcessingInstruction); XText xText = node as XText; if (xText != null) return new XTextWrapper(xText); XComment xComment = node as XComment; if (xComment != null) return new XCommentWrapper(xComment); XAttribute xAttribute = node as XAttribute; if (xAttribute != null) return new XAttributeWrapper(xAttribute); XDocumentType xDocumentType = node as XDocumentType; if (xDocumentType != null) return new XDocumentTypeWrapper(xDocumentType); return new XObjectWrapper(node); } public override IXmlNode AppendChild(IXmlNode newChild) { Container.Add(newChild.WrappedNode); _childNodes = null; return newChild; } } }