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/*
* CENA C++ Utilities
*
* by Stephane Chatty
*
* Copyright 1991-1997
* Laboratoire de Recherche en Informatique (LRI)
* Centre d'Etudes de la Navigation Aerienne (CENA)
*
* plain and generic hash tables and dictionnaries
* (Original C version by Michel Beaudouin-Lafon)
*
* $Id$
* $CurLog$
*/
#ifndef HashTable_H_
#define HashTable_H_
#include "cplus_bugs.h"
#include <sys/types.h>
class IvlAllocator;
typedef void IvlHashItem;
class IvlHashCell {
protected:
friend class IvlHashTable;
friend class IvlHashCellIter;
static IvlAllocator* HashCellMem;
static void ClassInit ();
const void* Key; /* hash key */
IvlHashItem* Info; /* data */
IvlHashCell* Next; /* synonyms */
inline IvlHashCell (const void* k, IvlHashCell* n) : Key (k), Info (0), Next (n) {}
public:
inline void SetInfo (IvlHashItem* p) { Info = p; }
inline IvlHashItem* GetInfo () const { return Info; }
inline const void* GetKey () const { return Key; }
void* operator new (size_t);
void operator delete (void*);
};
class IvlHashCellRef {
friend class IvlHashTable;
protected:
const IvlHashTable& Table;
const void* Key;
inline IvlHashCellRef (const IvlHashTable& t, const void* key) : Table (t), Key (key) {}
#ifdef CPLUS_BUG1
inline IvlHashCellRef (const IvlHashCellRef& t) : Table (t.Table), Key (t.Key) {}
#endif
public:
IvlHashItem* operator = (IvlHashItem*);
operator IvlHashItem* ();
};
typedef unsigned int (*HASH_F) (const void*, int);
typedef int (*HCMP_F) (const void*, const void*);
typedef void* (*HCP_F) (const void*);
typedef void (*HDEL_F) (const void*);
class IvlHashTable {
private:
friend class IvlHashCellIter;
friend class IvlHashCellRef;
protected :
IvlHashCell** Table;
unsigned int Size;
HASH_F Hash;
HCP_F Copy;
HDEL_F Delete;
HCMP_F Compare;
IvlHashCell** HashKey (const void*) const;
IvlHashCell* FindCell (IvlHashCell**, const void*) const;
IvlHashCell* AddCell (IvlHashCell**, const void*) const;
public:
static unsigned int HashPtr (const void*, int);
IvlHashTable (unsigned int, HASH_F = 0, HCP_F = 0, HDEL_F = 0, HCMP_F = 0);
IvlHashTable (const IvlHashTable&);
~IvlHashTable ();
IvlHashCell* Add (const void*, int* = 0);
IvlHashCell* Get (const void*);
IvlHashItem* Remove (const void*, int* = 0);
void Clear ();
void Resize (int);
inline int GetSize () const { return Size; }
IvlHashCellRef operator [] (const void*) const;
#ifdef TUNE
void HashStats ();
void CollStats ();
#endif
};
class IvlDictionnary : public IvlHashTable {
protected:
static void* CopyString (const void*);
static void DeleteString (const void*);
static int CompareString (const void*, const void*);
public:
IvlDictionnary (int size, HASH_F = 0);
~IvlDictionnary ();
void KeyCopy (int);
static unsigned int HashString (const void*, int);
};
class IvlHashCellIter {
public:
enum hashiter_status { Normal, StartOfTable, EndOfTable, BadTable };
protected:
const IvlHashTable& TheTable;
int CurIndex;
IvlHashCell* CurCell;
public:
inline IvlHashCellIter (const IvlHashTable& t) : TheTable (t) { CurIndex = -1; CurCell = 0; }
inline ~IvlHashCellIter () {}
inline void Reset () { CurCell = 0; CurIndex = -1; }
IvlHashCellIter& operator ++ ();
#ifndef CPLUS_BUG16
IvlHashCellIter operator ++ (int);
#endif
inline IvlHashCell* operator * () const { return CurCell; }
hashiter_status GetStatus () const;
inline operator int () const { return CurCell != 0; }
};
class IvlHashIter : public IvlHashCellIter {
public:
inline IvlHashIter (const IvlHashTable& t) : IvlHashCellIter (t) { }
inline ~IvlHashIter () {}
inline IvlHashIter& operator ++ () { return (IvlHashIter&)(this->IvlHashCellIter::operator ++ ()); }
inline IvlHashItem* operator * () const { return CurCell ? CurCell->GetInfo () : 0; }
};
#ifndef CPLUS_BUG19
template <class ITEM> class IvlHashTableOf;
template <class ITEM> class IvlDictionnaryOf;
template <class ITEM> class IvlHashCellOf : public IvlHashCell {
protected:
inline IvlHashCellOf (const void* k, IvlHashCellOf<ITEM>* n) : IvlHashCell (k, n) {}
public:
inline void SetInfo (ITEM* p) { IvlHashCell::SetInfo (p); }
inline ITEM* GetInfo () const { return (ITEM*) IvlHashCell::GetInfo (); }
};
template <class ITEM> class IvlHashCellRefOf : public IvlHashCellRef {
public:
inline IvlHashCellRefOf (const IvlHashTableOf<ITEM>& t, const void* key) : IvlHashCellRef (t, key) {}
#ifdef CPLUS_BUG1
inline IvlHashCellRefOf (const IvlHashCellRefOf<ITEM>& t) : IvlHashCellRef (t) {}
#endif
inline ITEM* operator = (ITEM* it) { return (ITEM*) (IvlHashCellRef::operator = (it)); }
inline operator ITEM* () { return (ITEM*) (IvlHashCellRef::operator IvlHashItem* ()); }
};
template <class ITEM> class IvlHashTableOf : public IvlHashTable {
public:
inline IvlHashTableOf (unsigned int size, HASH_F hash = 0, HCP_F cp = 0, HDEL_F del = 0, HCMP_F cmp= 0) : IvlHashTable (size, hash, cp, del, cmp) {}
inline ~IvlHashTableOf () {}
inline IvlHashCellOf<ITEM>* Add (const void* key, int* found = 0) { return (IvlHashCellOf<ITEM>*) IvlHashTable::Add (key, found); }
inline IvlHashCellOf<ITEM>* Get (const void* key) { return (IvlHashCellOf<ITEM>*) IvlHashTable::Get (key); }
inline ITEM* Remove (const void* key, int* found = 0) { return (ITEM*) IvlHashTable::Remove (key, found); }
inline IvlHashCellRefOf<ITEM> operator [] (const void* key) const { return IvlHashCellRefOf<ITEM> (*this, key); }
};
template <class ITEM> class IvlDictionnaryOf : public IvlDictionnary {
public:
inline IvlDictionnaryOf (unsigned int size, HASH_F hash = 0) : IvlDictionnary (size, hash) {}
inline ~IvlDictionnaryOf () {}
inline IvlHashCellOf<ITEM>* Add (const void* key, int* found = 0) { return (IvlHashCellOf<ITEM>*) IvlDictionnary::Add (key, found); }
inline IvlHashCellOf<ITEM>* Get (const void* key) { return (IvlHashCellOf<ITEM>*) IvlDictionnary::Get (key); }
inline ITEM* Remove (const void* key, int* found = 0) { return (ITEM*) IvlDictionnary::Remove (key, found); }
inline operator const IvlHashTableOf<ITEM>& () const { return *(const IvlHashTableOf<ITEM>*) this; }
inline IvlHashCellRefOf<ITEM> operator [] (const char* key) const { return IvlHashCellRefOf<ITEM> (*(const IvlHashTableOf<ITEM>*)this, key); }
};
template <class ITEM> class IvlHashedArrayOf : public IvlHashTable {
public:
inline IvlHashedArrayOf (unsigned int size, HASH_F hash = 0) : IvlHashTable (size, hash) {}
inline ~IvlHashedArrayOf () {}
inline IvlHashCellOf<ITEM>* Add (int key, int* found = 0) { return (IvlHashCellOf<ITEM>*) IvlHashTable::Add ((void*)key, found); }
inline IvlHashCellOf<ITEM>* Get (int key) { return (IvlHashCellOf<ITEM>*) IvlHashTable::Get ((void*)key); }
inline ITEM* Remove (int key, int* found = 0) { return (ITEM*) IvlHashTable::Remove ((void*) key, found); }
inline operator const IvlHashTableOf<ITEM>& () const { return *(const IvlHashTableOf<ITEM>*) this; }
inline IvlHashCellRefOf<ITEM> operator [] (int key) const { return IvlHashCellRefOf<ITEM> (*(const IvlHashTableOf<ITEM>*)this, (void*)key); }
};
template <class ITEM> class IvlHashIterOf : public IvlHashIter {
public:
inline IvlHashIterOf (const IvlHashTableOf<ITEM>& t) : IvlHashIter (t) { }
inline ~IvlHashIterOf () {}
inline IvlHashIterOf<ITEM>& operator ++ () { return (IvlHashIterOf<ITEM>&)(this->IvlHashIter::operator ++ ()); }
inline ITEM* operator * () const { return (ITEM*) (IvlHashIter::operator * ()); }
};
template <class ITEM> class IvlHashCellIterOf : public IvlHashCellIter {
public:
inline IvlHashCellIterOf (const IvlHashTableOf<ITEM>& t) : IvlHashCellIter (t) { }
inline ~IvlHashCellIterOf () {}
inline IvlHashCellIterOf<ITEM>& operator ++ () { return (IvlHashCellIterOf<ITEM>&)(this->IvlHashCellIter::operator ++ ()); }
#ifndef CPLUS_BUG16
inline IvlHashCellIterOf<ITEM> operator ++ (int i) { return *(IvlHashCellIterOf<ITEM>*)&(this->IvlHashCellIter::operator ++ (i)); }
#endif
inline IvlHashCellOf<ITEM>* operator * () const { return (IvlHashCellOf<ITEM>*) (IvlHashCellIter::operator * ()); }
};
#endif /* CPLUS_BUG19 */
#endif /* HashTable_H_ */
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