forked from boostorg/mpl
83 lines
2.2 KiB
C++
83 lines
2.2 KiB
C++
//-----------------------------------------------------------------------------
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// boost mpl/lambda_helper.hpp header file
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// See http://www.boost.org for updates, documentation, and revision history.
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//-----------------------------------------------------------------------------
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//
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// Copyright (c) 2001-02
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// Aleksey Gurtovoy
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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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#if !defined(BOOST_PP_IS_ITERATING)
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///// header body
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#ifndef BOOST_MPL_LAMBDA_HELPER_HPP_INCLUDED
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#define BOOST_MPL_LAMBDA_HELPER_HPP_INCLUDED
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#include "boost/config.hpp"
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#include "boost/mpl/aux_/config/use_preprocessed.hpp"
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#if !defined(BOOST_MPL_NO_PREPROCESSED_HEADERS) && \
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!defined(BOOST_MPL_PREPROCESSING_MODE)
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# define BOOST_MPL_PREPROCESSED_HEADER lambda_helper.hpp
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# include "boost/mpl/aux_/include_preprocessed.hpp"
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#else
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# include "boost/mpl/limits/arity.hpp"
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# include "boost/mpl/aux_/preprocessor/params.hpp"
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# include "boost/mpl/aux_/preprocessor/repeat.hpp"
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# include "boost/preprocessor/iterate.hpp"
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# include "boost/preprocessor/inc.hpp"
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# include "boost/preprocessor/cat.hpp"
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namespace boost {
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namespace mpl {
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#define BOOST_PP_ITERATION_PARAMS_1 \
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(3, (1,BOOST_MPL_METAFUNCTION_MAX_ARITY, "boost/mpl/lambda_helper.hpp"))
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#include BOOST_PP_ITERATE()
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} // namespace mpl
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} // namespace boost
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#endif // BOOST_MPL_USE_PREPROCESSED_HEADERS
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#endif // BOOST_MPL_LAMBDA_HELPER_HPP_INCLUDED
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///// iteration
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#else
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#define i BOOST_PP_FRAME_ITERATION(1)
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#define MPL_AUX_ARG_TYPEDEF(unused, i, T) \
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typedef BOOST_PP_CAT(T, BOOST_PP_INC(i)) \
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BOOST_PP_CAT(arg, BOOST_PP_INC(i)); \
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/**/
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template<
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template< BOOST_MPL_PP_PARAMS(i, typename P) > class F
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, BOOST_MPL_PP_PARAMS(i, typename T)
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>
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struct BOOST_PP_CAT(lambda_helper,i)
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{
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struct rebind
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{
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BOOST_STATIC_CONSTANT(int, arity = i);
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BOOST_MPL_PP_REPEAT(i, MPL_AUX_ARG_TYPEDEF, T)
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template< BOOST_MPL_PP_PARAMS(i, typename U) > struct apply
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: F<BOOST_MPL_PP_PARAMS(i,U)>
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{
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};
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};
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};
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#undef MPL_AUX_ARG_TYPEDEF
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#undef i
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#endif // BOOST_PP_IS_ITERATING
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