1 files changed, 78 insertions, 0 deletions
diff --git a/omegalib/omega/include/basic/Bag.h b/omegalib/omega/include/basic/Bag.h
new file mode 100644
index 0000000..42285d0
--- /dev/null
+++ b/omegalib/omega/include/basic/Bag.h
@@ -0,0 +1,78 @@
+#if ! defined _Bag_h
+#define _Bag_h 1
+
+#include <stdio.h>
+#include <basic/Iterator.h>
+#include <basic/Collection.h>
+#include <basic/Link.h>
+
+namespace omega {
+
+template<class T> class Bag : public Collection<T> { 
+public:
+virtual ~Bag();
+	Bag();
+	Bag(const Bag<T>&);
+	Bag & operator=(const Bag<T>&);
+virtual	void operator |= (const Bag<T> & b); // add elements in b
+	Iterator<T> *new_iterator();
+	bool empty() const;
+	void remove(T);
+virtual	void insert(T);
+	void clear();
+virtual	bool contains(T) const;
+	int size() const;
+	T extract();
+// protected:  breaks g++ 261
+	List_Element<T>* contents;
+};
+
+
+template<class T> class Ordered_Bag : public Bag<T> { 
+public:
+	Ordered_Bag();
+// virtual ~Ordered_Bag();
+	Ordered_Bag(const Ordered_Bag<T>& B) : Bag<T>(B) {}
+	void insert(T);
+virtual	void operator |= (const Ordered_Bag<T> & b); // add elements in b
+	void operator |= (const Bag<T> & b);
+	bool  contains(T) const;
+        bool  operator == (const Ordered_Bag<T>&) const;
+        bool  operator != (const Ordered_Bag<T>&) const;
+        bool  operator <  (const Ordered_Bag<T>&) const;
+};
+
+template <class T> class Set : public Ordered_Bag <T> { 
+public:
+	Set();
+// virtual ~Set();
+	Set(T);
+	Set(const Set<T>& S) : Ordered_Bag<T>(S) {}
+
+        bool  contains (const Set<T>& b) const;
+        bool  contains (T t) const { return Ordered_Bag<T>::contains(t); }
+	// the above makes "standard" C++ happy
+
+virtual	void operator |= (const Set<T> & b); // add elements in b
+	void operator |= (const Ordered_Bag<T> & b);
+	void operator |= (const Bag<T> & b);
+
+        void operator -= (const Set<T> & b); // delete items also in b
+        void operator &= (const Set<T> & b); // delete items not in b
+        bool operator & (const Set<T> &) const; // check for elements in common
+};
+
+} // namespace
+
+#if ! defined DONT_INCLUDE_TEMPLATE_CODE
+#include <basic/Bag.c>
+#endif
+
+#define instantiate_Bag(T)		template class Bag<T>; \
+					instantiate_List_Element(T);
+#define instantiate_Ordered_Bag(T)	template class Ordered_Bag<T>; \
+					instantiate_Bag(T)
+#define instantiate_Set(T)		template class Set<T>; \
+					instantiate_Ordered_Bag(T)
+
+#endif