namespace arc::validate::asserts
{

  template<typename T>
  void
  assert_true(T const& expr, std::source_location origin)
  {
    struct extras_t
    {
      std::source_location origin;

      void
      print(std::ostream& o) const
      {
        o << "  assertion failed: " << origin.file_name() << ':' << origin.line() << '\n';
      }

    };

    if (expr == true) {
      return;
    }

    throw failure_t{origin, "assertion failed", extras_t{origin}};
  }

  template<typename T>
  void
  assert_false(T const& expr, std::source_location origin)
  {
    struct extras_t
    {
      std::source_location origin;

      void
      print(std::ostream& o) const
      {
        o << "  assertion failed: " << origin.file_name() << ':' << origin.line() << '\n';
      }

    };

    if (expr == false) {
      return;
    }

    throw failure_t{origin, "assertion failed", extras_t{origin}};
  }

  template<typename T>
  void
  assert_nullptr(T const& expr, std::source_location origin)
  {
    struct extras_t
    {
      std::source_location origin;

      void
      print(std::ostream& o) const
      {
        o << "  assertion failed: " << origin.file_name() << ':' << origin.line() << '\n';
      }

    };

    if (expr == nullptr) {
      return;
    }

    throw failure_t{origin, "assertion failed", extras_t{origin}};
  }

  template<typename T>
  void
  assert_not_nullptr(T const& expr, std::source_location origin)
  {
    struct extras_t
    {
      std::source_location origin;

      void
      print(std::ostream& o) const
      {
        o << "  assertion failed: " << origin.file_name() << ':' << origin.line() << '\n';
      }

    };

    if (expr != nullptr) {
      return;
    }

    throw failure_t{origin, "assertion failed", extras_t{origin}};
  }

  template<typename L, typename R>
  void
  assert_equal(L const& left, R const& right, std::source_location origin)
  {
    struct extras_t
    {
      std::source_location origin;

      void
      print(std::ostream& o) const
      {
        o << "  assertion failed: " << origin.file_name() << ':' << origin.line() << '\n';
      }

    };

    if (left == right) {
      return;
    }

    throw failure_t{origin, "assertion failed", extras_t{origin}};
  }

  template<typename L, typename R>
  void
  assert_not_equal(L const& left, R const& right, std::source_location origin)
  {
    struct extras_t
    {
      std::source_location origin;

      void
      print(std::ostream& o) const
      {
        o << "  assertion failed: " << origin.file_name() << ':' << origin.line() << '\n';
      }

    };

    if (left != right) {
      return;
    }

    throw failure_t{origin, "assertion failed", extras_t{origin}};
  }

  template<typename L, typename R>
  void
  assert_less_than(L const& left, R const& right, std::source_location origin)
  {
    struct extras_t
    {
      std::source_location origin;

      void
      print(std::ostream& o) const
      {
        o << "  assertion failed: " << origin.file_name() << ':' << origin.line() << '\n';
      }

    };

    if (left < right) {
      return;
    }

    throw failure_t{origin, "assertion failed", extras_t{origin}};
  }

  template<typename L, typename R>
  void
  assert_less_than_or_equal(L const& left, R const& right, std::source_location origin)
  {
    struct extras_t
    {
      std::source_location origin;

      void
      print(std::ostream& o) const
      {
        o << "  assertion failed: " << origin.file_name() << ':' << origin.line() << '\n';
      }

    };

    if (left <= right) {
      return;
    }

    throw failure_t{origin, "assertion failed", extras_t{origin}};
  }

  template<typename L, typename R>
  void
  assert_greater_than(L const& left, R const& right, std::source_location origin)
  {
    struct extras_t
    {
      std::source_location origin;

      void
      print(std::ostream& o) const
      {
        o << "  assertion failed: " << origin.file_name() << ':' << origin.line() << '\n';
      }

    };

    if (left > right) {
      return;
    }

    throw failure_t{origin, "assertion failed", extras_t{origin}};
  }

  template<typename L, typename R>
  void
  assert_greater_than_or_equal(L const& left, R const& right, std::source_location origin)
  {
    struct extras_t
    {
      std::source_location origin;

      void
      print(std::ostream& o) const
      {
        o << "  assertion failed: " << origin.file_name() << ':' << origin.line() << '\n';
      }

    };

    if (left >= right) {
      return;
    }

    throw failure_t{origin, "assertion failed", extras_t{origin}};
  }

  template<typename E, typename F>
  void
  assert_throws(F const& function, std::source_location origin)
  {
    struct extras_t
    {
      std::source_location origin;

      void
      print(std::ostream& o) const
      {
        o << "  assertion failed: " << origin.file_name() << ':' << origin.line() << '\n';
      }

    };

    try {
      function();
    }
    catch (E const&) {
      return;
    }

    throw failure_t{origin, "assertion failed", extras_t{origin}};
  }

  template<typename F>
  void
  assert_throws_any(F const& function, std::source_location origin)
  {
    struct extras_t
    {
      std::source_location origin;

      void
      print(std::ostream& o) const
      {
        o << "  assertion failed: " << origin.file_name() << ':' << origin.line() << '\n';
      }

    };

    try {
      function();
    }
    catch (...) {
      return;
    }

    throw failure_t{origin, "assertion failed", extras_t{origin}};
  }

  template<typename F>
  void
  assert_does_not_throw(F const& function, std::source_location origin)
  {
    struct extras_t
    {
      std::source_location origin;

      void
      print(std::ostream& o) const
      {
        o << "  assertion failed: " << origin.file_name() << ':' << origin.line() << '\n';
      }

    };

    try {
      function();
    }
    catch (...) {
      throw failure_t{origin, "assertion failed", extras_t{origin}};
    }
  }

} // namespace arc::validate::asserts