130 lines
2.2 KiB
C++
130 lines
2.2 KiB
C++
/*
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* Copyright 2009-2010, Andrea Anzani. All rights reserved.
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* Distributed under the terms of the MIT License.
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*/
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#ifndef _KEY_MAP_H
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#define _KEY_MAP_H
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#include <map>
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#include "List.h"
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template<class KEY, class TYPE>
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class KeyMap {
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public:
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uint32 CountItems() const;
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void AddItem(KEY k, TYPE t);
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TYPE ValueFor(KEY, bool* found = NULL) const;
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TYPE RemoveItemAt(int32 position);
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TYPE RemoveItemFor(KEY);
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KEY KeyAt(uint32 position) const;
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TYPE ValueAt(uint32 position) const;
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List<TYPE> Values() const;
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private:
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std::map<KEY, TYPE> fMap;
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typedef typename std::map<KEY, TYPE>::iterator fIter;
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typedef typename std::map<KEY, TYPE>::const_iterator fConstIter;
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};
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template<class KEY, class TYPE>
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inline uint32
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KeyMap<KEY, TYPE>::CountItems() const
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{
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return fMap.size();
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}
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template<class KEY, class TYPE>
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inline void
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KeyMap<KEY, TYPE>::AddItem(KEY k, TYPE t)
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{
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fMap[k] = t;
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}
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template<class KEY, class TYPE>
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inline TYPE
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KeyMap<KEY, TYPE>::ValueFor(KEY k, bool* found) const
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{
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fConstIter i = fMap.find(k);
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if (found) {
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if (i == fMap.end())
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*found = false;
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else
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*found = true;
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}
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if (i == fMap.end())
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return NULL;
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return i->second;
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}
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template<class KEY, class TYPE>
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inline TYPE
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KeyMap<KEY, TYPE>::RemoveItemAt(int32 position)
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{
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TYPE value = ValueAt(position);
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fIter i = fMap.begin();
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std::advance(i, position);
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fMap.erase(i->first);
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return value;
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}
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template<class KEY, class TYPE>
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inline TYPE
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KeyMap<KEY, TYPE>::RemoveItemFor(KEY k)
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{
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TYPE value = ValueFor(k);
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fMap.erase(k);
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return value;
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}
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template<class KEY, class TYPE>
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inline KEY
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KeyMap<KEY, TYPE>::KeyAt(uint32 position) const
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{
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fConstIter i = fMap.begin();
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std::advance(i, position);
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if (i == fMap.end())
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return NULL;
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return i->first;
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}
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template<class KEY, class TYPE>
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inline TYPE
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KeyMap<KEY, TYPE>::ValueAt(uint32 position) const
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{
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fConstIter i = fMap.begin();
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std::advance(i, position);
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if (i == fMap.end())
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return NULL;
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return i->second;
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}
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template<class KEY, class TYPE>
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inline List<TYPE>
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KeyMap<KEY, TYPE>::Values() const
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{
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List<TYPE> list;
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for (fIter i = fMap.begin(); i != fMap.end(); ++i)
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list.AddItem(i->second);
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return list;
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}
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#endif // _KEY_MAP_H
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