boost/parameter/aux_/preprocessor/for_each.hpp
// Copyright Daniel Wallin 2005. Use, modification and distribution is // subject to the Boost Software License, Version 1.0. (See accompanying // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) #ifndef BOOST_PARAMETER_FOR_EACH_051217_HPP # define BOOST_PARAMETER_FOR_EACH_051217_HPP # include <boost/preprocessor/cat.hpp> # include <boost/preprocessor/detail/split.hpp> # include <boost/preprocessor/logical/not.hpp> # include <boost/preprocessor/facilities/is_empty.hpp> # include <boost/preprocessor/tuple/eat.hpp> # include <boost/preprocessor/arithmetic/inc.hpp> # include <boost/preprocessor/repeat.hpp> # include <boost/preprocessor/punctuation/comma_if.hpp> # include <boost/preprocessor/for.hpp> # include <boost/preprocessor/repetition/deduce_r.hpp> # define BOOST_PARAMETER_FOR_EACH_head_aux2(x,y) (x,y), ~ # define BOOST_PARAMETER_FOR_EACH_head_aux3(x,y,z) (x,y,z), ~ # define BOOST_PARAMETER_FOR_EACH_head_aux4(x,y,z,u) (x,y,z,u), ~ # define BOOST_PARAMETER_FOR_EACH_head(n,x) \ BOOST_PP_SPLIT(0, BOOST_PP_CAT(BOOST_PARAMETER_FOR_EACH_head_aux,n) x) # define BOOST_PARAMETER_FOR_EACH_pred_aux_BOOST_PARAMETER_FOR_EACH_END_SENTINEL # define BOOST_PARAMETER_FOR_EACH_pred_aux_check(x) \ BOOST_PP_NOT(BOOST_PP_IS_EMPTY( \ BOOST_PP_CAT(BOOST_PARAMETER_FOR_EACH_pred_aux_, x) \ )), ~ # define BOOST_PARAMETER_FOR_EACH_pred_aux2(x,y) \ BOOST_PARAMETER_FOR_EACH_pred_aux_check(x) # define BOOST_PARAMETER_FOR_EACH_pred_aux3(x,y,z) \ BOOST_PARAMETER_FOR_EACH_pred_aux_check(x) # define BOOST_PARAMETER_FOR_EACH_pred_aux4(x,y,z,u) \ BOOST_PARAMETER_FOR_EACH_pred_aux_check(x) # define BOOST_PARAMETER_FOR_EACH_pred_aux0(n,x) \ BOOST_PP_CAT(BOOST_PARAMETER_FOR_EACH_pred_aux,n) x # if BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MSVC() # define BOOST_PARAMETER_FOR_EACH_pred_SPLIT_FIRST(x) \ BOOST_PP_SPLIT(0, x) # define BOOST_PARAMETER_FOR_EACH_pred(r, state) \ BOOST_PARAMETER_FOR_EACH_pred_SPLIT_FIRST( \ BOOST_PARAMETER_FOR_EACH_pred_aux0( \ BOOST_PP_TUPLE_ELEM(5,3,state) \ , BOOST_PP_TUPLE_ELEM(5,0,state) \ ) \ ) # else # define BOOST_PARAMETER_FOR_EACH_pred(r, state) \ BOOST_PP_SPLIT( \ 0 \ , BOOST_PARAMETER_FOR_EACH_pred_aux0( \ BOOST_PP_TUPLE_ELEM(5,3,state) \ , BOOST_PP_TUPLE_ELEM(5,0,state) \ ) \ ) # endif # define BOOST_PARAMETER_FOR_EACH_op(r, state) \ ( \ BOOST_PP_TUPLE_EAT(BOOST_PP_TUPLE_ELEM(5,3,state)) \ BOOST_PP_TUPLE_ELEM(5,0,state) \ , BOOST_PP_TUPLE_ELEM(5,1,state) \ , BOOST_PP_TUPLE_ELEM(5,2,state) \ , BOOST_PP_TUPLE_ELEM(5,3,state) \ , BOOST_PP_INC(BOOST_PP_TUPLE_ELEM(5,4,state)) \ ) # define BOOST_PARAMETER_FOR_EACH_macro(r, state) \ BOOST_PP_TUPLE_ELEM(5,2,state)( \ r \ , BOOST_PP_TUPLE_ELEM(5,4,state) \ , BOOST_PARAMETER_FOR_EACH_head( \ BOOST_PP_TUPLE_ELEM(5,3,state) \ , BOOST_PP_TUPLE_ELEM(5,0,state) \ ) \ , BOOST_PP_TUPLE_ELEM(5,1,state) \ ) # define BOOST_PARAMETER_FOR_EACH_build_end_sentinel(z,n,text) \ BOOST_PP_COMMA_IF(n) BOOST_PARAMETER_FOR_EACH_END_SENTINEL # define BOOST_PARAMETER_FOR_EACH_build_end_sentinel_tuple(arity) \ ( \ BOOST_PP_REPEAT(arity, BOOST_PARAMETER_FOR_EACH_build_end_sentinel, _) \ ) # define BOOST_PARAMETER_FOR_EACH_R(r, arity, list, data, macro) \ BOOST_PP_CAT(BOOST_PP_FOR_, r)( \ (list BOOST_PARAMETER_FOR_EACH_build_end_sentinel_tuple(arity), data, macro, arity, 0) \ , BOOST_PARAMETER_FOR_EACH_pred \ , BOOST_PARAMETER_FOR_EACH_op \ , BOOST_PARAMETER_FOR_EACH_macro \ ) # define BOOST_PARAMETER_FOR_EACH(arity, list, data, macro) \ BOOST_PARAMETER_FOR_EACH_R(BOOST_PP_DEDUCE_R(), arity, list, data, macro) #endif // BOOST_PARAMETER_FOR_EACH_051217_HPP