Initial import of the CDE 2.1.30 sources from the Open Group.

cde/programs/nsgmls/HashTableItemBase.h

@@ -0,0 +1,39 @@
+/* $XConsortium: HashTableItemBase.h /main/1 1996/07/29 16:53:09 cde-hp $ */
+// Copyright (c) 1994 James Clark
+// See the file COPYING for copying permission.
+
+#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.C"
+#endif