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include/platform/container/nmap.h

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+/*------------------------------------------------------------------------------
+	GSFramework
+	Copyright 2001-2013 Emmanuel Julien. All Rights Reserved.
+----------------------------------------------------------------------------- */
+
+
+#ifndef	__NMAP__
+#define	__NMAP__
+
+
+		#include "container/nlist.h"
+		#include "memory/nauto_ptr.h"
+
+
+namespace GS {
+
+//
+template <class KType, class VType>	struct Pair
+{
+		KType		key;
+		VType		value;
+
+		Pair(const KType _key, const VType _value) : key(_key), value(_value) {}
+};
+
+/*!
+	@short	Very naive map.
+	@todo	Red-black tree.
+	@author	Emmanuel Julien (ejulien@nworks.fr)
+*/
+template <class KType, class VType> class Map
+{
+		AutoList <Pair <KType, VType> *> pairs;
+
+public:
+
+		Pair <KType, VType> *Get(const KType &key) const
+		{
+			for	(typename List <Pair <KType, VType> *> ::Item *p = pairs.GetRoot(); p; p = p->Next())
+				if	(p->Object()->key == key)
+					return p->Object();
+			return 0;
+		}
+
+		uint		GetCount() const
+		{	return pairs.GetCount();	}
+
+		bool		HasKey(const KType &key) const
+		{	return asbool(Get(key));	}
+		VType		&operator [] (const KType &key) const
+		{	return Get(key)->value;		}
+
+		Pair <KType, VType> *Add(const KType &key, const VType &value)
+		{
+			AutoPtr <Pair <KType, VType> > pair(new Pair <KType, VType> (key, value));
+			return pair.IsValid() && pairs.Add(pair) ? pair.Detach() : 0;
+		}
+
+		bool		Delete(Pair <KType, VType> *pair)
+		{	return pairs.Remove(pair);	}
+		bool		Delete(const KType &key)
+		{	return Delete(Get(key));	}
+};
+
+} // GS
+
+
+#endif	// __NMAP__