Started emitting events for Values

src/value/valueevents.h

@@ -0,0 +1,35 @@
+#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 <multiset>
+#include <vector>
+
+namespace YAML
+{
+	class Value;
+	
+	class ValueEvents
+	{
+	public:
+		ValueEvents(const Value& value);
+		
+	private:
+		void Visit(detail::node& node);
+		
+	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
+