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