ceph/src/boost/libs/lambda/include/boost/lambda/detail/control_constructs_common.hpp

   1 // Boost Lambda Library -- control_constructs_common.hpp -------------------
   2
   3 // Copyright (C) 1999, 2000 Jaakko Jarvi (jaakko.jarvi@cs.utu.fi)
   4 // Copyright (C) 2000 Gary Powell (powellg@amazon.com)
   5 //
   6 // Distributed under the Boost Software License, Version 1.0. (See
   7 // accompanying file LICENSE_1_0.txt or copy at
   8 // http://www.boost.org/LICENSE_1_0.txt)
   9 //
  10 // For more information, see www.boost.org
  11
  12 // --------------------------------------------------------------------------
  13
  14 #if !defined(BOOST_CONTROL_CONSTRUCTS_COMMON_HPP)
  15 #define BOOST_CONTROL_CONSTRUCTS_COMMON_HPP
  16
  17 namespace boost {
  18 namespace lambda {
  19
  20   // special types of lambda functors, used with control structures
  21   // to guarantee that they are composed correctly.
  22
  23 template<class Tag, class LambdaFunctor>
  24 class tagged_lambda_functor;
  25
  26 template<class Tag, class Args>
  27 class tagged_lambda_functor<Tag, lambda_functor<Args> >
  28   : public lambda_functor<Args>
  29 {
  30 public:
  31   tagged_lambda_functor(const Args& a) : lambda_functor<Args>(a) {}
  32
  33   tagged_lambda_functor(const lambda_functor<Args>& a)
  34     : lambda_functor<Args>(a) {}
  35
  36   // for the no body cases in control structures.
  37   tagged_lambda_functor() : lambda_functor<Args>() {}
  38 };
  39
  40 } // lambda
  41 } // boost
  42
  43 #endif // BOOST_CONTROL_CONSTRUCTS_COMMON_HPP
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