1 files changed, 62 insertions, 0 deletions
diff --git a/Xamarin.Forms.Xaml/XamlNodeVisitor.cs b/Xamarin.Forms.Xaml/XamlNodeVisitor.cs
new file mode 100644
index 00000000..e0b1db32
--- /dev/null
+++ b/Xamarin.Forms.Xaml/XamlNodeVisitor.cs
@@ -0,0 +1,62 @@
+using System;
+
+namespace Xamarin.Forms.Xaml
+{
+	internal interface IXamlNodeVisitor
+	{
+		bool VisitChildrenFirst { get; }
+
+		bool StopOnDataTemplate { get; }
+
+		bool StopOnResourceDictionary { get; }
+
+		void Visit(ValueNode node, INode parentNode);
+		void Visit(MarkupNode node, INode parentNode);
+		void Visit(ElementNode node, INode parentNode);
+		void Visit(RootNode node, INode parentNode);
+		void Visit(ListNode node, INode parentNode);
+	}
+
+	internal class XamlNodeVisitor : IXamlNodeVisitor
+	{
+		readonly Action<INode, INode> action;
+
+		public XamlNodeVisitor(Action<INode, INode> action, bool visitChildrenFirst = false, bool stopOnDataTemplate = false)
+		{
+			this.action = action;
+			VisitChildrenFirst = visitChildrenFirst;
+			StopOnDataTemplate = stopOnDataTemplate;
+		}
+
+		public bool VisitChildrenFirst { get; }
+
+		public bool StopOnDataTemplate { get; }
+
+		public bool StopOnResourceDictionary { get; private set; }
+
+		public void Visit(ValueNode node, INode parentNode)
+		{
+			action(node, parentNode);
+		}
+
+		public void Visit(MarkupNode node, INode parentNode)
+		{
+			action(node, parentNode);
+		}
+
+		public void Visit(ElementNode node, INode parentNode)
+		{
+			action(node, parentNode);
+		}
+
+		public void Visit(RootNode node, INode parentNode)
+		{
+			action(node, parentNode);
+		}
+
+		public void Visit(ListNode node, INode parentNode)
+		{
+			action(node, parentNode);
+		}
+	}
+}
+\ No newline at end of file