iterator_reference.h

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/*
 * nvbio
 * Copyright (c) 2011-2014, NVIDIA CORPORATION. All rights reserved.
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#pragma once

#include <nvbio/basic/types.h>
#include <nvbio/basic/iterator.h>

namespace nvbio {



template <typename Iterator>
struct iterator_reference
{
    typedef typename std::iterator_traits<Iterator>::value_type value_type;

    NVBIO_FORCEINLINE NVBIO_HOST_DEVICE iterator_reference(Iterator it) : m_it( it ) {}

    NVBIO_FORCEINLINE NVBIO_HOST_DEVICE iterator_reference(const iterator_reference& ref) : m_it( ref.m_it ) {}

    NVBIO_FORCEINLINE NVBIO_HOST_DEVICE iterator_reference& operator= (const iterator_reference& ref) { m_it.set( *ref.m_it ); return *this; }

    NVBIO_FORCEINLINE NVBIO_HOST_DEVICE iterator_reference& operator= (const value_type s) { m_it.set( s ); return *this; }

    NVBIO_FORCEINLINE NVBIO_HOST_DEVICE operator value_type() const { return *m_it; }

    Iterator m_it;
};

template <typename Iterator> struct to_const< iterator_reference<Iterator> >
{
    typedef typename iterator_reference<Iterator>::value_type type;
};


} // namespace nvbio

namespace std {

template <typename Iterator>
void swap(
    nvbio::iterator_reference<Iterator> ref1,
    nvbio::iterator_reference<Iterator> ref2)
{
    typename nvbio::iterator_reference<Iterator>::value_type tmp = ref1;

    ref1 = ref2;
    ref2 = tmp;
}

} // namespace std