restructure

1 files changed, 63 insertions, 0 deletions

diff --git a/omegalib/omega_lib/include/basic/Section.h b/omegalib/omega_lib/include/basic/Section.h
new file mode 100644
index 0000000..60821d1
--- /dev/null
+++ b/omegalib/omega_lib/include/basic/Section.h
@@ -0,0 +1,63 @@
+#if ! defined _Section_h
+#define _Section_h 1
+/*
+  Section of an existing collection viewed as a collection
+  */
+
+#include <basic/Collection.h>
+
+namespace omega {
+
+template<class T> class Section_Iterator;
+
+template <class T> class Section : public Sequence<T> {
+public:
+    Section(Sequence<T> *, int start, int length);
+
+    Iterator<T> *new_iterator();
+
+    const T &operator[](int) const;
+          T &operator[](int);      
+
+    int index(const T &) const;
+    int size() const;
+
+    friend class Section_Iterator<T>;
+
+private:
+    Sequence<T> *it;
+    int _start, _length;
+};
+
+template <class T> class Section_Iterator : public Iterator<T> {
+public:
+               Section_Iterator(Section<T> &sec);
+       virtual ~Section_Iterator() { delete it; }
+
+    const T &  operator*() const	{ return *(*it); }
+          T &  operator*()		{ return *(*it); }
+
+       void    operator++(int);
+       void    operator++();
+    
+       bool    live() const;
+  Iterator<T> *new_copy() const;
+
+private:
+    Section_Iterator(const Section_Iterator<T> &si);
+    Iterator<T> *it;
+    int remaining;
+};
+
+} // namespace
+
+#if ! defined DONT_INCLUDE_TEMPLATE_CODE
+#include <basic/Section.c>
+#endif
+
+#define instantiate_Section(T)	template class Section<T>; \
+				template class Section_Iterator<T>; \
+				instantiate_Sequence(T)
+#define instantiate_Section_Iterator(T)	  instantiate_Section(T)
+
+#endif