projects / ceph.git / blame
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|---|---|---|
| 7c673cae FG |
1 | |
| 2 | // NO INCLUDE GUARDS, THE HEADER IS INTENDED FOR MULTIPLE INCLUSION | |
| 3 | ||
| 4 | // Copyright Aleksey Gurtovoy 2000-2004 | |
| 5 | // | |
| 6 | // Distributed under the Boost Software License, Version 1.0. | |
| 7 | // (See accompanying file LICENSE_1_0.txt or copy at | |
| 8 | // http://www.boost.org/LICENSE_1_0.txt) | |
| 9 | // | |
| 10 | // See http://www.boost.org/libs/mpl for documentation. | |
| 11 | ||
| 12 | // $Id$ | |
| 13 | // $Date$ | |
| 14 | // $Revision$ | |
| 15 | ||
| 16 | #include <boost/preprocessor/expr_if.hpp> | |
| 17 | #include <boost/preprocessor/inc.hpp> | |
| 18 | #include <boost/preprocessor/cat.hpp> | |
| 19 | ||
| 20 | #if !defined(AUX778076_COUNT_ARGS_PARAM_NAME) | |
| 21 | # define AUX778076_COUNT_ARGS_PARAM_NAME T | |
| 22 | #endif | |
| 23 | ||
| 24 | #if !defined(AUX778076_COUNT_ARGS_TEMPLATE_PARAM) | |
| 25 | # define AUX778076_COUNT_ARGS_TEMPLATE_PARAM typename AUX778076_COUNT_ARGS_PARAM_NAME | |
| 26 | #endif | |
| 27 | ||
| 28 | // local macros, #undef-ined at the end of the header | |
| 29 | ||
| 30 | #if !defined(AUX778076_COUNT_ARGS_USE_STANDARD_PP_PRIMITIVES) | |
| 31 | ||
| 32 | # include <boost/mpl/aux_/preprocessor/repeat.hpp> | |
| 33 | # include <boost/mpl/aux_/preprocessor/params.hpp> | |
| 34 | ||
| 35 | # define AUX778076_COUNT_ARGS_REPEAT BOOST_MPL_PP_REPEAT | |
| 36 | # define AUX778076_COUNT_ARGS_PARAMS(param) \ | |
| 37 | BOOST_MPL_PP_PARAMS( \ | |
| 38 | AUX778076_COUNT_ARGS_ARITY \ | |
| 39 | , param \ | |
| 40 | ) \ | |
| 41 | /**/ | |
| 42 | ||
| 43 | #else | |
| 44 | ||
| 45 | # include <boost/preprocessor/enum_shifted_params.hpp> | |
| 46 | # include <boost/preprocessor/repeat.hpp> | |
| 47 | # include <boost/preprocessor/inc.hpp> | |
| 48 | ||
| 49 | # define AUX778076_COUNT_ARGS_REPEAT BOOST_PP_REPEAT | |
| 50 | # define AUX778076_COUNT_ARGS_PARAMS(param) \ | |
| 51 | BOOST_PP_ENUM_SHIFTED_PARAMS( \ | |
| 52 | BOOST_PP_INC(AUX778076_COUNT_ARGS_ARITY) \ | |
| 53 | , param \ | |
| 54 | ) \ | |
| 55 | /**/ | |
| 56 | ||
| 57 | #endif // AUX778076_COUNT_ARGS_USE_STANDARD_PP_PRIMITIVES | |
| 58 | ||
| 59 | ||
| 60 | #define AUX778076_IS_ARG_TEMPLATE_NAME \ | |
| 61 | BOOST_PP_CAT(is_,BOOST_PP_CAT(AUX778076_COUNT_ARGS_PREFIX,_arg)) \ | |
| 62 | /**/ | |
| 63 | ||
| 64 | #define AUX778076_COUNT_ARGS_FUNC(unused, i, param) \ | |
| 65 | BOOST_PP_EXPR_IF(i, +) \ | |
| 66 | AUX778076_IS_ARG_TEMPLATE_NAME<BOOST_PP_CAT(param,BOOST_PP_INC(i))>::value \ | |
| 67 | /**/ | |
| 68 | ||
| 69 | // is_<xxx>_arg | |
| 70 | template< AUX778076_COUNT_ARGS_TEMPLATE_PARAM > | |
| 71 | struct AUX778076_IS_ARG_TEMPLATE_NAME | |
| 72 | { | |
| 73 | BOOST_STATIC_CONSTANT(bool, value = true); | |
| 74 | }; | |
| 75 | ||
| 76 | template<> | |
| 77 | struct AUX778076_IS_ARG_TEMPLATE_NAME<AUX778076_COUNT_ARGS_DEFAULT> | |
| 78 | { | |
| 79 | BOOST_STATIC_CONSTANT(bool, value = false); | |
| 80 | }; | |
| 81 | ||
| 82 | // <xxx>_count_args | |
| 83 | template< | |
| 84 | AUX778076_COUNT_ARGS_PARAMS(AUX778076_COUNT_ARGS_TEMPLATE_PARAM) | |
| 85 | > | |
| 86 | struct BOOST_PP_CAT(AUX778076_COUNT_ARGS_PREFIX,_count_args) | |
| 87 | { | |
| 88 | BOOST_STATIC_CONSTANT(int, value = AUX778076_COUNT_ARGS_REPEAT( | |
| 89 | AUX778076_COUNT_ARGS_ARITY | |
| 90 | , AUX778076_COUNT_ARGS_FUNC | |
| 91 | , AUX778076_COUNT_ARGS_PARAM_NAME | |
| 92 | )); | |
| 93 | }; | |
| 94 | ||
| 95 | #undef AUX778076_COUNT_ARGS_FUNC | |
| 96 | #undef AUX778076_IS_ARG_TEMPLATE_NAME | |
| 97 | #undef AUX778076_COUNT_ARGS_PARAMS | |
| 98 | #undef AUX778076_COUNT_ARGS_REPEAT | |
| 99 | ||
| 100 | #undef AUX778076_COUNT_ARGS_ARITY | |
| 101 | #undef AUX778076_COUNT_ARGS_DEFAULT | |
| 102 | #undef AUX778076_COUNT_ARGS_PREFIX | |
| 103 | #undef AUX778076_COUNT_ARGS_USE_STANDARD_PP_PRIMITIVES | |
| 104 | #undef AUX778076_COUNT_ARGS_TEMPLATE_PARAM | |
| 105 | #undef AUX778076_COUNT_ARGS_PARAM_NAME |