sync
This commit is contained in:
David Anderson
parent
44db80bc75
commit
cb291dbdd5
@ -17,287 +17,269 @@
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//namespace SourceHook
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//{
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template <class K>
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int HashFunction(const K & k);
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template <class K>
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int HashFunction(const K & k);
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template <class K>
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int Compare(const K & k1, const K & k2);
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template <class K>
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int Compare(const K & k1, const K & k2);
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/**
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* This is a tiny, growable hash class.
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* Meant for quick and dirty dictionaries only!
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*/
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template <class K, class V>
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class THash
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{
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public:
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struct THashNode
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/**
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* This is a tiny, growable hash class.
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* Meant for quick and dirty dictionaries only!
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*/
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template <class K, class V>
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class THash
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{
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THashNode(const K & k, const V & v) :
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key(k), val(v)
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{
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};
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THashNode & operator =(const THashNode &other)
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{
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key = other.key;
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val = other.val;
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}
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K key;
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V val;
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};
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typedef List<THashNode *> * NodePtr;
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public:
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class const_iterator;
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THash() : m_Buckets(NULL), m_numBuckets(0), m_percentUsed(0.0f), m_NumItems(0)
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{
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_Refactor();
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}
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THash(const THash &other) : m_Buckets(new NodePtr[other.m_numBuckets]),
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m_numBuckets(other.m_numBuckets), m_percentUsed(other.m_percentUsed)
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{
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for (size_t i=0; i<m_numBuckets; i++)
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m_Buckets[i] = NULL;
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for (const_iterator iter = other.begin(); iter != other.end(); ++iter)
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_FindOrInsert(iter->key)->val = iter->val;
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}
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void operator=(const THash &other)
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{
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clear();
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for (const_iterator iter = other.begin(); iter != other.end(); ++iter)
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_FindOrInsert(iter->key)->val = iter->val;
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}
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~THash()
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{
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_Clear();
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}
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void clear()
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{
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_Clear();
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_Refactor();
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}
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size_t GetBuckets()
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{
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return m_numBuckets;
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}
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float PercentUsed()
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{
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return m_percentUsed;
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}
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size_t size()
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{
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return m_NumItems;
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}
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V & operator [](const K & key)
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{
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THashNode *pNode = _FindOrInsert(key);
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return pNode->val;
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}
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private:
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void _Clear()
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{
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typename List<THashNode *>::iterator iter, end;
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for (size_t i=0; i<m_numBuckets; i++)
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public:
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struct THashNode
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{
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if (m_Buckets[i])
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{
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end = m_Buckets[i]->end();
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iter = m_Buckets[i]->begin();
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while (iter != end)
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THashNode(const K & k, const V & v) :
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key(k), val(v)
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{
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delete (*iter);
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iter++;
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}
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delete m_Buckets[i];
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m_Buckets[i] = NULL;
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}
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}
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if (m_Buckets)
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delete [] m_Buckets;
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m_Buckets = NULL;
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m_numBuckets = 0;
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m_NumItems = 0;
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}
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THashNode *_FindOrInsert(const K & key)
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{
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size_t place = HashFunction(key) % m_numBuckets;
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THashNode *pNode = NULL;
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if (!m_Buckets[place])
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{
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m_Buckets[place] = new List<THashNode *>;
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pNode = new THashNode(key, V());
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m_Buckets[place]->push_back(pNode);
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m_percentUsed += (1.0f / (float)m_numBuckets);
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m_NumItems++;
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} else {
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typename List<THashNode *>::iterator iter;
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for (iter=m_Buckets[place]->begin(); iter!=m_Buckets[place]->end(); iter++)
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};
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THashNode & operator =(const THashNode &other)
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{
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if (Compare((*iter)->key, key) == 0)
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return (*iter);
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key = other.key;
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val = other.val;
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}
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//node does not exist
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pNode = new THashNode(key, V());
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m_Buckets[place]->push_back(pNode);
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m_NumItems++;
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}
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if (PercentUsed() > 0.75f)
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K key;
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V val;
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};
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typedef List<THashNode *> * NodePtr;
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public:
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class const_iterator;
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THash() : m_Buckets(NULL), m_numBuckets(0), m_percentUsed(0.0f), m_items(0)
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{
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_Refactor();
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return pNode;
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}
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void _Refactor()
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{
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m_percentUsed = 0.0f;
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if (!m_numBuckets)
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}
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THash(const THash &other) : m_Buckets(new NodePtr[other.m_numBuckets]),
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m_numBuckets(other.m_numBuckets), m_percentUsed(other.m_percentUsed), m_items(0)
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{
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m_numBuckets = _T_INIT_HASH_SIZE;
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m_Buckets = new NodePtr[m_numBuckets];
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for (size_t i=0; i<m_numBuckets; i++)
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m_Buckets[i] = NULL;
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} else {
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size_t oldSize = m_numBuckets;
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m_numBuckets *= 2;
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typename List<THashNode *>::iterator iter;
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size_t place;
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THashNode *pHashNode;
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NodePtr *temp = new NodePtr[m_numBuckets];
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m_Buckets[i] = NULL;
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for (const_iterator iter = other.begin(); iter != other.end(); ++iter)
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_FindOrInsert(iter->key)->val = iter->val;
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}
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void operator=(const THash &other)
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{
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clear();
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for (const_iterator iter = other.begin(); iter != other.end(); ++iter)
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_FindOrInsert(iter->key)->val = iter->val;
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}
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~THash()
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{
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_Clear();
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}
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void clear()
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{
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_Clear();
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_Refactor();
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}
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size_t size()
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{
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return m_items;
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}
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size_t GetBuckets()
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{
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return m_numBuckets;
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}
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float PercentUsed()
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{
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return m_percentUsed;
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}
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V & operator [](const K & key)
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{
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THashNode *pNode = _FindOrInsert(key);
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return pNode->val;
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}
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private:
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void _Clear()
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{
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typename List<THashNode *>::iterator iter, end;
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for (size_t i=0; i<m_numBuckets; i++)
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temp[i] = NULL;
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//look in old hash table
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for (size_t i=0; i<oldSize; i++)
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{
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//does a bucket have anything?
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if (m_Buckets[i])
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{
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//go through the list of items
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for (iter = m_Buckets[i]->begin(); iter != m_Buckets[i]->end(); iter++)
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end = m_Buckets[i]->end();
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iter = m_Buckets[i]->begin();
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while (iter != end)
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{
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pHashNode = (*iter);
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//rehash it with the new bucket filter
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place = HashFunction(pHashNode->key) % m_numBuckets;
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//add it to the new hash table
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if (!temp[place])
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{
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temp[place] = new List<THashNode *>;
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m_percentUsed += (1.0f / (float)m_numBuckets);
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}
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temp[place]->push_back(pHashNode);
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delete (*iter);
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iter++;
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}
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//delete that bucket!
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delete m_Buckets[i];
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m_Buckets[i] = NULL;
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}
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}
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//reassign bucket table
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delete [] m_Buckets;
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m_Buckets = temp;
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if (m_Buckets)
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delete [] m_Buckets;
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m_Buckets = NULL;
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m_numBuckets = 0;
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m_items = 0;
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}
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}
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public:
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friend class iterator;
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friend class const_iterator;
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class iterator
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{
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friend class THash;
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public:
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iterator() : curbucket(-1), hash(NULL), end(true)
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THashNode *_FindOrInsert(const K & key)
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{
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};
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iterator(THash *h) : curbucket(-1), hash(h), end(false)
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{
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if (!h->m_Buckets)
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end = true;
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else
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_Inc();
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};
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//pre increment
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iterator & operator++()
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{
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_Inc();
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return *this;
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}
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//post increment
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iterator operator++(int)
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{
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iterator old(*this);
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_Inc();
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return old;
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}
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const THashNode & operator * () const
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{
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return *(*iter);
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}
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THashNode & operator * ()
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{
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return *(*iter);
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}
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const THashNode * operator ->() const
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{
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return (*iter);
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}
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THashNode * operator ->()
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{
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return (*iter);
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}
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bool operator ==(const iterator &where) const
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{
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if (where.hash == this->hash
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&& where.end == this->end
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&&
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(this->end ||
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((where.curbucket == this->curbucket)
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&& (where.iter == iter))
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))
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return true;
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return false;
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}
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bool operator !=(const iterator &where) const
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{
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return !( (*this) == where );
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}
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void erase()
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{
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if (end || !hash || curbucket < 0 || curbucket >= static_cast<int>(hash->m_numBuckets))
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return;
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// Remove this element and move to the next one
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iterator tmp = *this;
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++tmp;
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delete (*iter);
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hash->m_Buckets[curbucket]->erase(iter);
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*this = tmp;
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m_NumItems--;
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// :TODO: Maybe refactor to a lower size if required
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}
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private:
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void _Inc()
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{
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if (end || !hash || curbucket >= static_cast<int>(hash->m_numBuckets))
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return;
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if (curbucket < 0)
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size_t place = HashFunction(key) % m_numBuckets;
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THashNode *pNode = NULL;
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if (!m_Buckets[place])
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{
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for (int i=0; i<(int)hash->m_numBuckets; i++)
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m_Buckets[place] = new List<THashNode *>;
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pNode = new THashNode(key, V());
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m_Buckets[place]->push_back(pNode);
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m_percentUsed += (1.0f / (float)m_numBuckets);
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m_items++;
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} else {
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typename List<THashNode *>::iterator iter;
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for (iter=m_Buckets[place]->begin(); iter!=m_Buckets[place]->end(); iter++)
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{
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if (hash->m_Buckets[i])
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if (Compare((*iter)->key, key) == 0)
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return (*iter);
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}
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//node does not exist
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pNode = new THashNode(key, V());
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m_Buckets[place]->push_back(pNode);
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m_items++;
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}
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if (PercentUsed() > 0.75f)
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_Refactor();
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return pNode;
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}
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void _Refactor()
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{
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m_percentUsed = 0.0f;
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if (!m_numBuckets)
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{
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m_numBuckets = _T_INIT_HASH_SIZE;
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m_Buckets = new NodePtr[m_numBuckets];
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for (size_t i=0; i<m_numBuckets; i++)
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m_Buckets[i] = NULL;
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} else {
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size_t oldSize = m_numBuckets;
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m_numBuckets *= 2;
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typename List<THashNode *>::iterator iter;
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size_t place;
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THashNode *pHashNode;
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NodePtr *temp = new NodePtr[m_numBuckets];
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for (size_t i=0; i<m_numBuckets; i++)
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temp[i] = NULL;
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//look in old hash table
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for (size_t i=0; i<oldSize; i++)
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{
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//does a bucket have anything?
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if (m_Buckets[i])
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{
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iter = hash->m_Buckets[i]->begin();
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if (iter == hash->m_Buckets[i]->end())
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continue;
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curbucket = i;
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break;
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//go through the list of items
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for (iter = m_Buckets[i]->begin(); iter != m_Buckets[i]->end(); iter++)
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{
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pHashNode = (*iter);
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//rehash it with the new bucket filter
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place = HashFunction(pHashNode->key) % m_numBuckets;
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//add it to the new hash table
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if (!temp[place])
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{
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temp[place] = new List<THashNode *>;
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m_percentUsed += (1.0f / (float)m_numBuckets);
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}
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temp[place]->push_back(pHashNode);
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}
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//delete that bucket!
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delete m_Buckets[i];
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m_Buckets[i] = NULL;
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}
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}
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if (curbucket < 0)
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//reassign bucket table
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delete [] m_Buckets;
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m_Buckets = temp;
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}
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}
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public:
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friend class iterator;
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friend class const_iterator;
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class iterator
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{
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friend class THash;
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public:
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iterator() : curbucket(-1), hash(NULL), end(true)
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{
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};
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iterator(THash *h) : curbucket(-1), hash(h), end(false)
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{
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if (!h->m_Buckets)
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end = true;
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} else {
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if (iter != hash->m_Buckets[curbucket]->end())
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iter++;
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if (iter == hash->m_Buckets[curbucket]->end())
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else
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_Inc();
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};
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//pre increment
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iterator & operator++()
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{
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_Inc();
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return *this;
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}
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//post increment
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iterator operator++(int)
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{
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iterator old(*this);
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_Inc();
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return old;
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}
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const THashNode & operator * () const
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{
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return *(*iter);
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}
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THashNode & operator * ()
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{
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return *(*iter);
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}
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const THashNode * operator ->() const
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{
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return (*iter);
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}
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THashNode * operator ->()
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{
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return (*iter);
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}
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bool operator ==(const iterator &where) const
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{
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if (where.hash == this->hash
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&& where.end == this->end
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&&
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(this->end ||
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((where.curbucket == this->curbucket)
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&& (where.iter == iter))
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))
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return true;
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return false;
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}
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bool operator !=(const iterator &where) const
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{
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return !( (*this) == where );
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}
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void erase()
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{
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if (end || !hash || curbucket < 0 || curbucket >= static_cast<int>(hash->m_numBuckets))
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return;
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// Remove this element and move to the next one
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iterator tmp = *this;
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++tmp;
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delete (*iter);
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hash->m_Buckets[curbucket]->erase(iter);
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*this = tmp;
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// :TODO: Maybe refactor to a lower size if required
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m_items--;
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}
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private:
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void _Inc()
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{
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if (end || !hash || curbucket >= static_cast<int>(hash->m_numBuckets))
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return;
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if (curbucket < 0)
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{
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int oldbucket = curbucket;
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for (int i=curbucket+1; i<(int)hash->m_numBuckets; i++)
|
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for (int i=0; i<(int)hash->m_numBuckets; i++)
|
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{
|
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if (hash->m_Buckets[i])
|
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{
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@ -308,95 +290,95 @@ public:
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break;
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}
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}
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if (curbucket == oldbucket)
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if (curbucket < 0)
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end = true;
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}
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}
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||||
}
|
||||
private:
|
||||
int curbucket;
|
||||
typename List<THashNode *>::iterator iter;
|
||||
THash *hash;
|
||||
bool end;
|
||||
};
|
||||
class const_iterator
|
||||
{
|
||||
friend class THash;
|
||||
public:
|
||||
const_iterator() : curbucket(-1), hash(NULL), end(true)
|
||||
{
|
||||
};
|
||||
const_iterator(const THash *h) : curbucket(-1), hash(h), end(false)
|
||||
{
|
||||
if (!h->m_Buckets)
|
||||
end = true;
|
||||
else
|
||||
_Inc();
|
||||
};
|
||||
//pre increment
|
||||
const_iterator & operator++()
|
||||
{
|
||||
_Inc();
|
||||
return *this;
|
||||
}
|
||||
//post increment
|
||||
const_iterator operator++(int)
|
||||
{
|
||||
iterator old(*this);
|
||||
_Inc();
|
||||
return old;
|
||||
}
|
||||
const THashNode & operator * () const
|
||||
{
|
||||
return *(*iter);
|
||||
}
|
||||
const THashNode * operator ->() const
|
||||
{
|
||||
return (*iter);
|
||||
}
|
||||
bool operator ==(const const_iterator &where) const
|
||||
{
|
||||
if (where.hash == this->hash
|
||||
&& where.end == this->end
|
||||
&&
|
||||
(this->end ||
|
||||
((where.curbucket == this->curbucket)
|
||||
&& (where.iter == iter))
|
||||
))
|
||||
return true;
|
||||
return false;
|
||||
}
|
||||
bool operator !=(const const_iterator &where) const
|
||||
{
|
||||
return !( (*this) == where );
|
||||
}
|
||||
private:
|
||||
void _Inc()
|
||||
{
|
||||
if (end || !hash || curbucket >= static_cast<int>(hash->m_numBuckets))
|
||||
return;
|
||||
if (curbucket < 0)
|
||||
{
|
||||
for (int i=0; i<(int)hash->m_numBuckets; i++)
|
||||
{
|
||||
if (hash->m_Buckets[i])
|
||||
} else {
|
||||
if (iter != hash->m_Buckets[curbucket]->end())
|
||||
iter++;
|
||||
if (iter == hash->m_Buckets[curbucket]->end())
|
||||
{
|
||||
iter = hash->m_Buckets[i]->begin();
|
||||
if (iter == hash->m_Buckets[i]->end())
|
||||
continue;
|
||||
curbucket = i;
|
||||
break;
|
||||
int oldbucket = curbucket;
|
||||
for (int i=curbucket+1; i<(int)hash->m_numBuckets; i++)
|
||||
{
|
||||
if (hash->m_Buckets[i])
|
||||
{
|
||||
iter = hash->m_Buckets[i]->begin();
|
||||
if (iter == hash->m_Buckets[i]->end())
|
||||
continue;
|
||||
curbucket = i;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (curbucket == oldbucket)
|
||||
end = true;
|
||||
}
|
||||
}
|
||||
if (curbucket < 0)
|
||||
}
|
||||
private:
|
||||
int curbucket;
|
||||
typename List<THashNode *>::iterator iter;
|
||||
THash *hash;
|
||||
bool end;
|
||||
};
|
||||
class const_iterator
|
||||
{
|
||||
friend class THash;
|
||||
public:
|
||||
const_iterator() : curbucket(-1), hash(NULL), end(true)
|
||||
{
|
||||
};
|
||||
const_iterator(const THash *h) : curbucket(-1), hash(h), end(false)
|
||||
{
|
||||
if (!h->m_Buckets)
|
||||
end = true;
|
||||
} else {
|
||||
if (iter != hash->m_Buckets[curbucket]->end())
|
||||
iter++;
|
||||
if (iter == hash->m_Buckets[curbucket]->end())
|
||||
else
|
||||
_Inc();
|
||||
};
|
||||
//pre increment
|
||||
const_iterator & operator++()
|
||||
{
|
||||
_Inc();
|
||||
return *this;
|
||||
}
|
||||
//post increment
|
||||
const_iterator operator++(int)
|
||||
{
|
||||
iterator old(*this);
|
||||
_Inc();
|
||||
return old;
|
||||
}
|
||||
const THashNode & operator * () const
|
||||
{
|
||||
return *(*iter);
|
||||
}
|
||||
const THashNode * operator ->() const
|
||||
{
|
||||
return (*iter);
|
||||
}
|
||||
bool operator ==(const const_iterator &where) const
|
||||
{
|
||||
if (where.hash == this->hash
|
||||
&& where.end == this->end
|
||||
&&
|
||||
(this->end ||
|
||||
((where.curbucket == this->curbucket)
|
||||
&& (where.iter == iter))
|
||||
))
|
||||
return true;
|
||||
return false;
|
||||
}
|
||||
bool operator !=(const const_iterator &where) const
|
||||
{
|
||||
return !( (*this) == where );
|
||||
}
|
||||
private:
|
||||
void _Inc()
|
||||
{
|
||||
if (end || !hash || curbucket >= static_cast<int>(hash->m_numBuckets))
|
||||
return;
|
||||
if (curbucket < 0)
|
||||
{
|
||||
int oldbucket = curbucket;
|
||||
for (int i=curbucket+1; i<(int)hash->m_numBuckets; i++)
|
||||
for (int i=0; i<(int)hash->m_numBuckets; i++)
|
||||
{
|
||||
if (hash->m_Buckets[i])
|
||||
{
|
||||
@ -407,84 +389,103 @@ public:
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (curbucket == oldbucket)
|
||||
if (curbucket < 0)
|
||||
end = true;
|
||||
} else {
|
||||
if (iter != hash->m_Buckets[curbucket]->end())
|
||||
iter++;
|
||||
if (iter == hash->m_Buckets[curbucket]->end())
|
||||
{
|
||||
int oldbucket = curbucket;
|
||||
for (int i=curbucket+1; i<(int)hash->m_numBuckets; i++)
|
||||
{
|
||||
if (hash->m_Buckets[i])
|
||||
{
|
||||
iter = hash->m_Buckets[i]->begin();
|
||||
if (iter == hash->m_Buckets[i]->end())
|
||||
continue;
|
||||
curbucket = i;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (curbucket == oldbucket)
|
||||
end = true;
|
||||
}
|
||||
}
|
||||
}
|
||||
private:
|
||||
int curbucket;
|
||||
typename List<THashNode *>::iterator iter;
|
||||
const THash *hash;
|
||||
bool end;
|
||||
};
|
||||
public:
|
||||
iterator begin()
|
||||
{
|
||||
return iterator(this);
|
||||
}
|
||||
iterator end()
|
||||
{
|
||||
iterator iter;
|
||||
iter.hash = this;
|
||||
return iter;
|
||||
}
|
||||
private:
|
||||
int curbucket;
|
||||
typename List<THashNode *>::iterator iter;
|
||||
const THash *hash;
|
||||
bool end;
|
||||
};
|
||||
public:
|
||||
iterator begin()
|
||||
{
|
||||
return iterator(this);
|
||||
}
|
||||
iterator end()
|
||||
{
|
||||
iterator iter;
|
||||
iter.hash = this;
|
||||
return iter;
|
||||
}
|
||||
|
||||
const_iterator begin() const
|
||||
{
|
||||
return const_iterator(this);
|
||||
}
|
||||
const_iterator end() const
|
||||
{
|
||||
const_iterator iter;
|
||||
iter.hash = this;
|
||||
return iter;
|
||||
}
|
||||
const_iterator begin() const
|
||||
{
|
||||
return const_iterator(this);
|
||||
}
|
||||
const_iterator end() const
|
||||
{
|
||||
const_iterator iter;
|
||||
iter.hash = this;
|
||||
return iter;
|
||||
}
|
||||
|
||||
template <typename U>
|
||||
template <typename U>
|
||||
iterator find(const U & u) const
|
||||
{
|
||||
iterator b = begin();
|
||||
iterator e = end();
|
||||
for (iterator iter = b; iter != e; iter++)
|
||||
{
|
||||
if ( (*iter).key == u )
|
||||
return iter;
|
||||
iterator b = begin();
|
||||
iterator e = end();
|
||||
for (iterator iter = b; iter != e; iter++)
|
||||
{
|
||||
if ( (*iter).key == u )
|
||||
return iter;
|
||||
}
|
||||
return end();
|
||||
}
|
||||
return end();
|
||||
}
|
||||
template <typename U>
|
||||
template <typename U>
|
||||
iterator find(const U & u)
|
||||
{
|
||||
iterator b = begin();
|
||||
iterator e = end();
|
||||
for (iterator iter = b; iter != e; iter++)
|
||||
{
|
||||
if ( (*iter).key == u )
|
||||
return iter;
|
||||
iterator b = begin();
|
||||
iterator e = end();
|
||||
for (iterator iter = b; iter != e; iter++)
|
||||
{
|
||||
if ( (*iter).key == u )
|
||||
return iter;
|
||||
}
|
||||
return end();
|
||||
}
|
||||
return end();
|
||||
}
|
||||
|
||||
iterator erase(iterator where)
|
||||
{
|
||||
where.erase();
|
||||
return where;
|
||||
}
|
||||
template <typename U>
|
||||
iterator erase(iterator where)
|
||||
{
|
||||
where.erase();
|
||||
return where;
|
||||
}
|
||||
template <typename U>
|
||||
void erase(const U & u)
|
||||
{
|
||||
iterator iter = find(u);
|
||||
if (iter == end())
|
||||
return;
|
||||
iter.erase();
|
||||
}
|
||||
private:
|
||||
NodePtr *m_Buckets;
|
||||
size_t m_numBuckets;
|
||||
float m_percentUsed;
|
||||
size_t m_NumItems;
|
||||
};
|
||||
{
|
||||
iterator iter = find(u);
|
||||
if (iter == end())
|
||||
return;
|
||||
iter.erase();
|
||||
}
|
||||
private:
|
||||
NodePtr *m_Buckets;
|
||||
size_t m_numBuckets;
|
||||
float m_percentUsed;
|
||||
size_t m_items;
|
||||
};
|
||||
//};
|
||||
|
||||
#endif //_INCLUDE_SH_TINYHASH_H_
|
||||
|
||||
Loading…
Reference in New Issue
Block a user