1 // Copyright Daniel Wallin, David Abrahams 2005. Use, modification and

     2 // distribution is subject to the Boost Software License, Version 1.0. (See

     3 // accompanying file LICENSE_1_0.txt or copy at

     4 // http://www.boost.org/LICENSE_1_0.txt)

     5 

     6 #ifndef PARAMETER_REQUIREMENTS_050331_HPP

     7 #define PARAMETER_REQUIREMENTS_050331_HPP

     8 

     9 namespace boost { namespace parameter { namespace aux {

    10 

    11 // Used to pass static information about parameter requirements

    12 // through the satisfies() overload set (below).  The

    13 // matched function is never invoked, but its type indicates whether

    14 // a parameter matches at compile-time

    15 template <class Keyword, class Predicate, class HasDefault>

    16 struct parameter_requirements

    17 {

    18     typedef Keyword keyword;

    19     typedef Predicate predicate;

    20     typedef HasDefault has_default;

    21 };

    22 

    23 }}} // namespace boost::parameter::aux

    24 

    25 #endif // PARAMETER_REQUIREMENTS_050331_HPP