ref_vector.hpp

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//
// Copyright 2011 Ettus Research LLC
// Copyright 2018 Ettus Research, a National Instruments Company
//
// SPDX-License-Identifier: GPL-3.0-or-later
//
 
#pragma once
 
#include <uhd/config.hpp>
#include <cstddef>
 
namespace uhd {
 
template <typename T>
class UHD_API ref_vector
{
public:
    template <typename Ptr>
    ref_vector(Ptr* ptr) : _ptr(T(ptr)), _mem(_mem_t(&_ptr)), _size(1)
    {
        /* NOP */
    }
 
    template <typename Vector>
    ref_vector(const Vector& vec)
        : _ptr(T()), _mem(_mem_t(&vec.front())), _size(vec.size())
    {
        /* NOP */
    }
 
    ref_vector(const T* mem, size_t len) : _ptr(T()), _mem(_mem_t(mem)), _size(len)
    {
        /* NOP */
    }
 
    const T& operator[](size_t index) const
    {
        return _mem[index];
    }
 
    size_t size(void) const
    {
        return _size;
    }
 
private:
    const T _ptr;
    typedef T* _mem_t;
    const _mem_t _mem;
    const size_t _size;
};
 
} // namespace uhd