Start of moving Value -> Node and Node -> old API Node (with a #define toggle)

src/node/valueevents.h

@@ -0,0 +1,57 @@
+#ifndef VALUE_VALUEEVENTS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define VALUE_VALUEEVENTS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) || (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || (__GNUC__ >= 4)) // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include "yaml-cpp/anchor.h"
+#include "yaml-cpp/value/ptr.h"
+#include <map>
+#include <vector>
+
+namespace YAML
+{
+	class Value;
+	class EventHandler;
+	
+	class ValueEvents
+	{
+	public:
+		explicit ValueEvents(const Value& value);
+		
+		void Emit(EventHandler& handler);
+		
+	private:
+		class AliasManager {
+		public:
+			AliasManager(): m_curAnchor(0) {}
+			
+			void RegisterReference(const detail::node& node);
+			anchor_t LookupAnchor(const detail::node& node) const;
+			
+		private:
+			anchor_t _CreateNewAnchor() { return ++m_curAnchor; }
+			
+		private:
+			typedef std::map<const detail::node_ref*, anchor_t> AnchorByIdentity;
+			AnchorByIdentity m_anchorByIdentity;
+			
+			anchor_t m_curAnchor;
+		};
+		
+		void Setup(const detail::node& node);
+		void Emit(const detail::node& node, EventHandler& handler, AliasManager& am) const;
+		bool IsAliased(const detail::node& node) const;
+		
+	private:
+		detail::shared_memory_holder m_pMemory;
+		detail::node& m_root;
+		
+		typedef std::map<const detail::node_ref *, int> RefCount;
+		RefCount m_refCount;
+	};
+}
+
+#endif // VALUE_VALUEEVENTS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+