godot/core/templates/lru.h

/**************************************************************************/
/*  lru.h                                                                 */
/**************************************************************************/
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
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#ifndef LRU_H
#define LRU_H

#include "core/math/math_funcs.h"
#include "hash_map.h"
#include "list.h"

template <typename TKey, typename TData, typename Hasher = HashMapHasherDefault, typename Comparator = HashMapComparatorDefault<TKey>>
class LRUCache {
private:
	struct Pair {
		TKey key;
		TData data;

		Pair() {}
		Pair(const TKey &p_key, const TData &p_data) :
				key(p_key),
				data(p_data) {
		}
	};

	typedef typename List<Pair>::Element *Element;

	List<Pair> _list;
	HashMap<TKey, Element, Hasher, Comparator> _map;
	size_t capacity;

public:
	const TData *insert(const TKey &p_key, const TData &p_value) { … }

	void clear() { … }

	bool has(const TKey &p_key) const { … }

	const TData &get(const TKey &p_key) { … };

	const TData *getptr(const TKey &p_key) { … }

	_FORCE_INLINE_ size_t get_capacity() const { … }
	_FORCE_INLINE_ size_t get_size() const { … }

	void set_capacity(size_t p_capacity) { … }

	LRUCache() { … }

	LRUCache(int p_capacity) { … }
};

#endif // LRU_H