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