projects / ceph.git / blame
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|---|---|---|
| 7c673cae FG |
1 | |
| 2 | // Copyright (C) 2009-2012 Lorenzo Caminiti | |
| 3 | // Distributed under the Boost Software License, Version 1.0 | |
| 4 | // (see accompanying file LICENSE_1_0.txt or a copy at | |
| 5 | // http://www.boost.org/LICENSE_1_0.txt) | |
| 6 | // Home at http://www.boost.org/libs/local_function | |
| 7 | ||
| 8 | #ifndef BOOST_LOCAL_FUNCTION_DETAIL_PP_KEYWORD_FACILITY_REMOVE_HPP_ | |
| 9 | #define BOOST_LOCAL_FUNCTION_DETAIL_PP_KEYWORD_FACILITY_REMOVE_HPP_ | |
| 10 | ||
| 11 | #include <boost/preprocessor/control/iif.hpp> | |
| 12 | #include <boost/preprocessor/tuple/eat.hpp> | |
| 13 | #include <boost/preprocessor/config/config.hpp> | |
| 14 | #include <boost/preprocessor/cat.hpp> | |
| 15 | ||
| 16 | // PRIVATE // | |
| 17 | ||
| 18 | // From PP_EXPAND (my own reentrant version). | |
| 19 | #if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC() && \ | |
| 20 | ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_DMC() | |
| 21 | # define BOOST_LOCAL_FUNCTION_DETAIL_PP_KEYWORD_FACILITY_REMOVE_EXPAND_(x) \ | |
| 22 | BOOST_LOCAL_FUNCTION_DETAIL_PP_KEYWORD_FACILITY_REMOVE_EXPAND_I_(x) | |
| 23 | #else | |
| 24 | # define BOOST_LOCAL_FUNCTION_DETAIL_PP_KEYWORD_FACILITY_REMOVE_EXPAND_(x) \ | |
| 25 | BOOST_LOCAL_FUNCTION_DETAIL_PP_KEYWORD_FACILITY_REMOVE_EXPAND_OO_((x)) | |
| 26 | # define BOOST_LOCAL_FUNCTION_DETAIL_PP_KEYWORD_FACILITY_REMOVE_EXPAND_OO_( \ | |
| 27 | par) \ | |
| 28 | BOOST_LOCAL_FUNCTION_DETAIL_PP_KEYWORD_FACILITY_REMOVE_EXPAND_I_ ## par | |
| 29 | #endif | |
| 30 | #define BOOST_LOCAL_FUNCTION_DETAIL_PP_KEYWORD_FACILITY_REMOVE_EXPAND_I_(x) x | |
| 31 | ||
| 32 | // PUBLIC // | |
| 33 | ||
| 34 | // `is_front_macro(tokens)` is 1 if `tokens` start with keyword to remove. | |
| 35 | // `removing_prefix ## <keyword-to-remove>` must expand to nothing, else 0. | |
| 36 | #define BOOST_LOCAL_FUNCTION_DETAIL_PP_KEYWORD_FACILITY_REMOVE_FRONT( \ | |
| 37 | tokens, is_front_macro, removing_prefix) \ | |
| 38 | /* without EXPAND doesn't expand on MSVC */ \ | |
| 39 | BOOST_LOCAL_FUNCTION_DETAIL_PP_KEYWORD_FACILITY_REMOVE_EXPAND_( \ | |
| 40 | BOOST_PP_IIF(is_front_macro(tokens), \ | |
| 41 | BOOST_PP_CAT \ | |
| 42 | , \ | |
| 43 | tokens BOOST_PP_TUPLE_EAT(2) \ | |
| 44 | )(removing_prefix, tokens) \ | |
| 45 | ) | |
| 46 | ||
| 47 | // `is_back_macro(tokens)` is 1 iff `tokens` end with keyword to remove. | |
| 48 | // `<keyword-to-remove> ## removing_postfix` must expand to nothing, else 0. | |
| 49 | #define BOOST_LOCAL_FUNCTION_DETAIL_PP_KEYWORD_FACILITY_REMOVE_BACK( \ | |
| 50 | tokens, is_back_macro, removing_prefix) \ | |
| 51 | BOOST_PP_IIF(is_back_macro(tokens), \ | |
| 52 | BOOST_PP_CAT \ | |
| 53 | , \ | |
| 54 | tokens BOOST_PP_TUPLE_EAT(2) \ | |
| 55 | )(tokens, removing_postfix) | |
| 56 | ||
| 57 | #endif // #include guard | |
| 58 |