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#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
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