no_value.hpp

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//
// Copyright (C) 2014, 2015 Ableton AG, Berlin. All rights reserved.
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#pragma once

#include <exception>
#include <atria/meta/utils.hpp>

namespace atria {
namespace funken {

struct no_value_error : std::exception
{
  const char* what() const noexcept override;
};

namespace detail {

struct no_value : meta::bottom
{
  template <typename T>
  operator T()
  {
    throw no_value_error{};
  }
};

} // namespace detail

} // namespace funken
} // namespace atria