| // Boost Lambda Library -- control_constructs_common.hpp ------------------- | |
| // Copyright (C) 1999, 2000 Jaakko Jarvi (jaakko.jarvi@cs.utu.fi) | |
| // Copyright (C) 2000 Gary Powell (powellg@amazon.com) | |
| // | |
| // Distributed under the Boost Software License, Version 1.0. (See | |
| // accompanying file LICENSE_1_0.txt or copy at | |
| // http://www.boost.org/LICENSE_1_0.txt) | |
| // | |
| // For more information, see www.boost.org | |
| // -------------------------------------------------------------------------- | |
| #if !defined(BOOST_CONTROL_CONSTRUCTS_COMMON_HPP) | |
| #define BOOST_CONTROL_CONSTRUCTS_COMMON_HPP | |
| namespace boost { | |
| namespace lambda { | |
| // special types of lambda functors, used with control structures | |
| // to guarantee that they are composed correctly. | |
| template<class Tag, class LambdaFunctor> | |
| class tagged_lambda_functor; | |
| template<class Tag, class Args> | |
| class tagged_lambda_functor<Tag, lambda_functor<Args> > | |
| : public lambda_functor<Args> | |
| { | |
| public: | |
| tagged_lambda_functor(const Args& a) : lambda_functor<Args>(a) {} | |
| tagged_lambda_functor(const lambda_functor<Args>& a) | |
| : lambda_functor<Args>(a) {} | |
| // for the no body cases in control structures. | |
| tagged_lambda_functor() : lambda_functor<Args>() {} | |
| }; | |
| } // lambda | |
| } // boost | |
| #endif // BOOST_CONTROL_CONSTRUCTS_COMMON_HPP | |