Program Listing for File Source.hpp

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#pragma once
#ifndef UIT_FIXTURES_SOURCE_HPP_INCLUDE
#define UIT_FIXTURES_SOURCE_HPP_INCLUDE

#include <memory>
#include <stddef.h>
#include <utility>

#include "../ducts/Duct.hpp"
#include "../spouts/Outlet.hpp"

namespace uit {

template<typename ImplSpec>
class Source {

  template<typename Outlet>
  using outlet_wrapper_t = typename ImplSpec::template outlet_wrapper_t<Outlet>;

public:

  using outlet_t = outlet_wrapper_t< uit::Outlet<ImplSpec> >;

private:

  outlet_t outlet;

public:

  Source(Source& other) = default;

  Source(const Source& other) = default;

  Source(Source&& other) = default;

  template <typename... Args>
  Source(Args&&... args) : outlet(
    std::make_shared<internal::Duct<ImplSpec>>(
      std::forward<Args>(args)...
    )
  ) { ; }

  template <size_t N>
  decltype(auto) get() const { if constexpr (N == 0) return outlet; }

  outlet_t& GetOutlet() { return outlet; }

};

} // namespace uit

namespace std {

  template<typename ImplSpec>
  struct tuple_size<uit::Source<ImplSpec>>
    : std::integral_constant<size_t, 1>{};

  template<typename ImplSpec, size_t N>
  struct tuple_element<N, uit::Source<ImplSpec>> {

    using type = decltype(
      std::declval<uit::Source<ImplSpec>>().template get<N>()
    );
  };

} // namespace std

#endif // #ifndef UIT_FIXTURES_SOURCE_HPP_INCLUDE