lindex.h

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// -*- C++ -*-
#ifndef __cxz_lindex_h__
#define __cxz_lindex_h__
 
#include "base/base.h"
#include "ranges/index_base.h"
#include "ranges/range_base.h"
#include "xpr/xpr.h"
 
namespace CNORXZ
{
    template <class Index, SizeT L>
    class LIndex : public Index
    {
    public:
    typedef typename Index::IB IB;
    typedef typename Index::RangeType RangeType;
 
    DEFAULT_MEMBERS(LIndex); 
    LIndex(const Sptr<Index>& i);
 
    IndexId<L> id() const;
    
    template <SizeT I>
    decltype(auto) stepSize(const IndexId<I>& id) const;
 
    template <class Xpr, class F>
    decltype(auto) ifor(const Xpr& xpr, F&& f) const;
 
    private:
    Sptr<Index> mI;
    };
 
    template <class Index, SizeT L>
    struct is_index<LIndex<Index,L>>
    {
    static constexpr bool value = is_index<Index>::value; 
    };
 
    template <class Index, SizeT L>
    struct index_expression_exists<LIndex<Index,L>>
    {
    static constexpr bool value = index_expression_exists<Index>::value;
    };
 
    template <class Index, SizeT L, class I1>
    decltype(auto) operator*(const Sptr<LIndex<Index,L>>& a, const Sptr<I1>& b);
 
    template <SizeT L, class Index>
    decltype(auto) lindexPtr(const Sptr<Index>& i);
 
    template <class Index, SizeT L>
    decltype(auto) lindexPtr(const Sptr<Index>& i, CSizeT<L> l);
}
 
#endif