#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