PtrInterval.hpp

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/*
 * PtrInterval.hpp
 *
 *  Created on: 27 May 2022
 *   Author(s): Jorn Reniers, Volkan Kumtepeli
 */
 
#pragma once
 
#include <vector>
#include <array>
#include <span>
#include <iterator>
 
//#include <type_traits>
 
namespace slide {
template <typename T>
class PtrInterval 
{
  T *begin_ptr{ nullptr };
  T *end_ptr{ nullptr };
 
public:
  [[nodiscard]] constexpr T *begin() noexcept { return begin_ptr; }
  [[nodiscard]] constexpr T *end() noexcept { return end_ptr; }
 
  size_t size() { return std::distance(begin_ptr, end_ptr); }
 
  PtrInterval(T &x)
  {
    begin_ptr = &x;
    end_ptr = begin_ptr + 1;
  }
 
  PtrInterval(std::vector<T> &x)
  {
    begin_ptr = &x[0];
    end_ptr = &x.back() + 1;
  }
 
  template <size_t N>
  PtrInterval(std::array<T, N> &x)
  {
    begin_ptr = &x[0];
    end_ptr = &x.back() + 1;
  }
 
  PtrInterval(std::span<T> x)
  {
    begin_ptr = &x[0];
    end_ptr = &x.back() + 1;
  }
};
} // namespace slide