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103 lines
7.1 KiB
C++
103 lines
7.1 KiB
C++
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/*==============================================================================
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Copyright (c) 2005-2010 Joel de Guzman
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Copyright (c) 2010 Thomas Heller
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Copyright (c) 2015 John Fletcher
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#ifndef BOOST_PHOENIX_FUNCTION_ADAPT_FUNCTION_HPP
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#define BOOST_PHOENIX_FUNCTION_ADAPT_FUNCTION_HPP
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#include <boost/phoenix/core/limits.hpp>
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#include <boost/phoenix/core/detail/function_eval.hpp>
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#include <boost/preprocessor/repetition/repeat.hpp>
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#define BOOST_PHOENIX_ADAPT_FUNCTION_NULLARY(RESULT, NAME, FUNC) \
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namespace detail0 \
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{ \
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struct BOOST_PP_CAT(NAME, _impl_nullary) \
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{ \
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typedef RESULT result_type; \
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\
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result_type \
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operator()() const \
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{ \
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return FUNC(); \
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} \
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}; \
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} \
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\
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inline \
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boost::phoenix::detail::expression::function_eval< \
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detail0:: BOOST_PP_CAT(NAME, _impl_nullary) \
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>::type const \
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NAME() \
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{ \
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return boost::phoenix::detail::expression:: \
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function_eval<detail0:: BOOST_PP_CAT(NAME, _impl_nullary)> \
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::make(detail0:: BOOST_PP_CAT(NAME, _impl_nullary)()); \
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} \
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/**/
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#define BOOST_PHOENIX_ADAPT_FUNCTION(RESULT, NAME, FUNC, N) \
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namespace detail1 \
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{ \
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struct BOOST_PP_CAT(BOOST_PP_CAT(NAME, _impl_), N) \
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{ \
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template <typename Sig> \
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struct result; \
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\
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template <typename This, BOOST_PHOENIX_typename_A(N)> \
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struct result<This(BOOST_PHOENIX_A(N))> \
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{typedef RESULT type;}; \
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\
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template <BOOST_PHOENIX_typename_A(N)> \
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RESULT \
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operator()(BOOST_PHOENIX_A_ref_a(N)) const \
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{ \
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return FUNC(BOOST_PHOENIX_a(N)); \
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} \
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}; \
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} \
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\
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template <BOOST_PHOENIX_typename_A(N)> \
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inline \
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typename \
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boost::phoenix::detail::expression::function_eval< \
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detail1:: BOOST_PP_CAT(BOOST_PP_CAT(NAME, _impl_), N) \
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, BOOST_PHOENIX_A(N)>::type const \
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NAME(BOOST_PHOENIX_A_const_ref_a(N)) \
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{ \
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return boost::phoenix::detail::expression:: \
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function_eval< \
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detail1:: BOOST_PP_CAT(BOOST_PP_CAT(NAME, _impl_), N) \
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, BOOST_PHOENIX_A(N) \
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>::make( \
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detail1:: BOOST_PP_CAT(BOOST_PP_CAT(NAME, _impl_), N)() \
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, BOOST_PHOENIX_a(N) \
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); \
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} \
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/**/
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#define BOOST_PHOENIX_ADAPT_FUNCTION_VARARG(RESULT, NAME, FUNC) \
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BOOST_PHOENIX_ADAPT_FUNCTION_NULLARY(NAME, FUNC) \
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BOOST_PP_REPEAT_FROM_TO( \
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1 \
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, BOOST_PHOENIX_LIMIT \
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, BOOST_PHOENIX_ADAPT_FUNCTION_VARARG_R \
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, (RESULT, NAME, FUNC) \
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) \
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/**/
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#define BOOST_PHOENIX_ADAPT_FUNCTION_VARARG_R(Z, N, D) \
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BOOST_PHOENIX_ADAPT_FUNCTION( \
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BOOST_PP_TUPLE_ELEM(3, 0, D) \
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, BOOST_PP_TUPLE_ELEM(3, 1, D) \
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, BOOST_PP_TUPLE_ELEM(3, 2, D) \
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, N \
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) \
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/**/
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#endif
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