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// 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
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