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50 lines
1.3 KiB
50 lines
1.3 KiB
// 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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