HashTableItemBase.h revision 7c478bd95313f5f23a4c958a745db2134aa03244
// Copyright (c) 1994 James Clark
// See the file COPYING for copying permission.
#pragma ident "%Z%%M% %I% %E% SMI"
#ifndef HashTableItemBase_INCLUDED
#define HashTableItemBase_INCLUDED 1
// All hash tables with the same type of key share object code.
// The cost of this is a virtual dtor in HashTableItemBase.
#ifdef SP_NAMESPACE
namespace SP_NAMESPACE {
#endif
template<class K>
class HashTableItemBase {
public:
HashTableItemBase(const K &k);
virtual ~HashTableItemBase();
virtual HashTableItemBase<K> *copy() const = 0;
K key;
};
template<class K>
struct HashTableKeyFunction {
static inline const K &key(const HashTableItemBase<K> &obj) {
return obj.key;
}
};
#ifdef SP_NAMESPACE
}
#endif
#endif /* not HashTableItemBase_INCLUDED */
#ifdef SP_DEFINE_TEMPLATES
#include "HashTableItemBase.cxx"
#endif