boost/preprocessor/array/replace.hpp
# /* ************************************************************************** # * * # * (C) Copyright Paul Mensonides 2002. # * Distributed under 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) # * * # ************************************************************************** */ # # /* See http://www.boost.org for most recent version. */ # # ifndef BOOST_PREPROCESSOR_ARRAY_REPLACE_HPP # define BOOST_PREPROCESSOR_ARRAY_REPLACE_HPP # # include <boost/preprocessor/arithmetic/inc.hpp> # include <boost/preprocessor/array/elem.hpp> # include <boost/preprocessor/array/push_back.hpp> # include <boost/preprocessor/comparison/not_equal.hpp> # include <boost/preprocessor/config/config.hpp> # include <boost/preprocessor/control/deduce_d.hpp> # include <boost/preprocessor/control/iif.hpp> # include <boost/preprocessor/control/while.hpp> # include <boost/preprocessor/tuple/elem.hpp> # # /* BOOST_PP_ARRAY_REPLACE */ # # define BOOST_PP_ARRAY_REPLACE(array, i, elem) BOOST_PP_ARRAY_REPLACE_I(BOOST_PP_DEDUCE_D(), array, i, elem) # define BOOST_PP_ARRAY_REPLACE_I(d, array, i, elem) BOOST_PP_ARRAY_REPLACE_D(d, array, i, elem) # # /* BOOST_PP_ARRAY_REPLACE_D */ # # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG() # define BOOST_PP_ARRAY_REPLACE_D(d, array, i, elem) BOOST_PP_TUPLE_ELEM(5, 3, BOOST_PP_WHILE_ ## d(BOOST_PP_ARRAY_REPLACE_P, BOOST_PP_ARRAY_REPLACE_O, (0, i, elem, (0, ()), array))) # else # define BOOST_PP_ARRAY_REPLACE_D(d, array, i, elem) BOOST_PP_ARRAY_REPLACE_D_I(d, array, i, elem) # define BOOST_PP_ARRAY_REPLACE_D_I(d, array, i, elem) BOOST_PP_TUPLE_ELEM(5, 3, BOOST_PP_WHILE_ ## d(BOOST_PP_ARRAY_REPLACE_P, BOOST_PP_ARRAY_REPLACE_O, (0, i, elem, (0, ()), array))) # endif # # define BOOST_PP_ARRAY_REPLACE_P(d, state) BOOST_PP_NOT_EQUAL(BOOST_PP_TUPLE_ELEM(5, 0, state), BOOST_PP_ARRAY_SIZE(BOOST_PP_TUPLE_ELEM(5, 4, state))) # # if BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_STRICT() # define BOOST_PP_ARRAY_REPLACE_O(d, state) BOOST_PP_ARRAY_REPLACE_O_I state # else # define BOOST_PP_ARRAY_REPLACE_O(d, state) BOOST_PP_ARRAY_REPLACE_O_I(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_TUPLE_ELEM(5, 4, state)) # endif # # define BOOST_PP_ARRAY_REPLACE_O_I(n, i, elem, res, arr) (BOOST_PP_INC(n), i, elem, BOOST_PP_ARRAY_PUSH_BACK(res, BOOST_PP_IIF(BOOST_PP_NOT_EQUAL(n, i), BOOST_PP_ARRAY_ELEM(n, arr), elem)), arr) # # endif