forked from boostorg/mpl
109 lines
2.9 KiB
C++
109 lines
2.9 KiB
C++
//-----------------------------------------------------------------------------
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// boost mpl/v2_1/expr.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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// Permission to use, copy, modify, distribute and sell this software
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// and its documentation for any purpose is hereby granted without fee,
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// provided that the above copyright notice appears in all copies and
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// that both the copyright notice and this permission notice appear in
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// supporting documentation. No representations are made about the
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// suitability of this software for any purpose. It is provided "as is"
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// without express or implied warranty.
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#if !defined(BOOST_PP_IS_ITERATING)
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///// header body
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#ifndef BOOST_MPL_EXPR_V2_1_HPP_INCLUDED
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#define BOOST_MPL_EXPR_V2_1_HPP_INCLUDED
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#if !defined(BOOST_MPL_PREPROCESSING_MODE)
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# include "boost/mpl/v2_1/expr_fwd.hpp"
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# include "boost/mpl/bind.hpp"
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#endif
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#if 0//defined(BOOST_MPL_USE_PREPROCESSED_HEADERS) &&
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//!defined(BOOST_MPL_PREPROCESSING_MODE)
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# define BOOST_MPL_PREPROCESSED_HEADER expr.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/comma_if.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 { namespace mpl { namespace v2_1 {
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# define AUX_EXPR_PARAMS(n, param) \
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BOOST_MPL_PP_PARAMS(n, param) \
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/**/
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# define AUX_EXPR_SPEC_PARAMS(n, F, param) \
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F BOOST_PP_COMMA_IF(n) \
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BOOST_MPL_PP_PARAMS(n, param) \
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/**/
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template< typename T > struct expr
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{
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typedef T type;
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};
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#define BOOST_PP_ITERATION_PARAMS_1 \
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(3,(0, BOOST_MPL_METAFUNCTION_MAX_ARITY, "boost/mpl/v2_1/expr.hpp"))
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#include BOOST_PP_ITERATE()
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# undef AUX_EXPR_SPEC_PARAMS
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# undef AUX_EXPR_PARAMS
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}}} // namespace boost::mpl::v2_1
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#endif // BOOST_MPL_USE_PREPROCESSED_HEADERS
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#endif // BOOST_MPL_EXPR_V2_1_HPP_INCLUDED
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///// iteration, depth == 1
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#elif BOOST_PP_ITERATION_DEPTH() == 1
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#define n BOOST_PP_FRAME_ITERATION(1)
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template<
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AUX_EXPR_SPEC_PARAMS(n, typename F, typename T)
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>
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struct expr< F (*)(AUX_EXPR_PARAMS(n, T)) >
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{
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# define AUX_EXPR_INVOCATION(unused, n, T) \
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BOOST_PP_COMMA_IF(n) \
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typename expr< BOOST_PP_CAT(T, BOOST_PP_INC(n)) >::type \
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/**/
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typedef BOOST_PP_CAT(bind,n)<
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F
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BOOST_PP_COMMA_IF(n) BOOST_MPL_PP_REPEAT(n, AUX_EXPR_INVOCATION, T)
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> type;
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# undef AUX_EXPR_INVOCATION
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};
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template<
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AUX_EXPR_SPEC_PARAMS(n, typename F, typename T)
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>
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struct expr< F (AUX_EXPR_PARAMS(n, T)) >
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: expr< F (*)(AUX_EXPR_PARAMS(n, T)) >
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{
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};
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#undef n
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#endif // BOOST_PP_IS_ITERATING
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