// objective: test \ref command in combination with const

// check: struct_foo.xml

/** @brief Foo class.

 *

 *  @see @ref Foo::Foo() constructor for details.

 *  @see @ref Foo constant.

 *  @see @ref operator<<(int) "less than operator".

 *  @see @ref operator<<(int) const "const less than operator".

 *  @see @ref operator()(int) "call operator".

 *  @see @ref operator()(int) const "const call operator".

 *  @see @ref operator&=(const Foo&) "and equal operator".

 *  @see @ref operator->*(int *) "member pointer operator".

 */

struct Foo {

  /** Constructor */

  Foo();

  /**

   * @brief Fun of two

   *

   * - fun() const

   * - @ref fun() const

   * - @ref fun() const "title"

   */

  static Foo fun(Foo a, Foo b);

  /** overloaded less than operator */

  Foo& operator<< (int i);

  /** overloaded const less than operator */

  const Foo& operator<< (int i) const;

  /** overloaded call operator */

  int operator()(int i);

  /** overloaded call operator */

  int operator()(int i) const;

  /** and equal operator */

  Foo& operator&=(const Foo& rhs);

  /** and equal operator */

  Foo& operator&=(const Foo& rhs);

  /** Member pointer operator */

  int* operator->*(int *p);

  /** @brief Fun with itself */

  Foo fun() const;

};