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49 lines
1.9 KiB
49 lines
1.9 KiB
# /* ************************************************************************** |
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# * * |
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# * (C) Copyright Paul Mensonides 2002. |
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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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# * * |
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# ************************************************************************** */ |
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# |
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# /* See http://www.boost.org for most recent version. */ |
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# |
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# ifndef BOOST_PREPROCESSOR_SEQ_CAT_HPP |
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# define BOOST_PREPROCESSOR_SEQ_CAT_HPP |
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# |
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# include <boost/preprocessor/arithmetic/dec.hpp> |
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# include <boost/preprocessor/config/config.hpp> |
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# include <boost/preprocessor/control/if.hpp> |
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# include <boost/preprocessor/seq/fold_left.hpp> |
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# include <boost/preprocessor/seq/seq.hpp> |
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# include <boost/preprocessor/seq/size.hpp> |
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# include <boost/preprocessor/tuple/eat.hpp> |
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# |
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# /* BOOST_PP_SEQ_CAT */ |
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# |
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# define BOOST_PP_SEQ_CAT(seq) \ |
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BOOST_PP_IF( \ |
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BOOST_PP_DEC(BOOST_PP_SEQ_SIZE(seq)), \ |
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BOOST_PP_SEQ_CAT_I, \ |
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BOOST_PP_SEQ_HEAD \ |
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)(seq) \ |
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/**/ |
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# define BOOST_PP_SEQ_CAT_I(seq) BOOST_PP_SEQ_FOLD_LEFT(BOOST_PP_SEQ_CAT_O, BOOST_PP_SEQ_HEAD(seq), BOOST_PP_SEQ_TAIL(seq)) |
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# |
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# define BOOST_PP_SEQ_CAT_O(s, st, elem) BOOST_PP_SEQ_CAT_O_I(st, elem) |
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# define BOOST_PP_SEQ_CAT_O_I(a, b) a ## b |
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# |
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# /* BOOST_PP_SEQ_CAT_S */ |
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# |
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# define BOOST_PP_SEQ_CAT_S(s, seq) \ |
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BOOST_PP_IF( \ |
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BOOST_PP_DEC(BOOST_PP_SEQ_SIZE(seq)), \ |
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BOOST_PP_SEQ_CAT_S_I_A, \ |
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BOOST_PP_SEQ_CAT_S_I_B \ |
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)(s, seq) \ |
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/**/ |
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# define BOOST_PP_SEQ_CAT_S_I_A(s, seq) BOOST_PP_SEQ_FOLD_LEFT_ ## s(BOOST_PP_SEQ_CAT_O, BOOST_PP_SEQ_HEAD(seq), BOOST_PP_SEQ_TAIL(seq)) |
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# define BOOST_PP_SEQ_CAT_S_I_B(s, seq) BOOST_PP_SEQ_HEAD(seq) |
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# |
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# endif
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