boost/preprocessor/list/size.hpp
# /* Copyright (C) 2001 # * Housemarque Oy # * http://www.housemarque.com # * # * 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) # */ # # /* Revised by Paul Mensonides (2002) */ # # /* See http://www.boost.org for most recent version. */ # # ifndef BOOST_PREPROCESSOR_LIST_SIZE_HPP # define BOOST_PREPROCESSOR_LIST_SIZE_HPP # # include <boost/preprocessor/arithmetic/inc.hpp> # include <boost/preprocessor/config/config.hpp> # include <boost/preprocessor/control/while.hpp> # include <boost/preprocessor/list/adt.hpp> # include <boost/preprocessor/tuple/elem.hpp> # include <boost/preprocessor/tuple/rem.hpp> # # /* BOOST_PP_LIST_SIZE */ # # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG() # define BOOST_PP_LIST_SIZE(list) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE(BOOST_PP_LIST_SIZE_P, BOOST_PP_LIST_SIZE_O, (0, list))) # else # define BOOST_PP_LIST_SIZE(list) BOOST_PP_LIST_SIZE_I(list) # define BOOST_PP_LIST_SIZE_I(list) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE(BOOST_PP_LIST_SIZE_P, BOOST_PP_LIST_SIZE_O, (0, list))) # endif # # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG() # define BOOST_PP_LIST_SIZE_P(d, rl) BOOST_PP_LIST_IS_CONS(BOOST_PP_TUPLE_ELEM(2, 1, rl)) # else # define BOOST_PP_LIST_SIZE_P(d, rl) BOOST_PP_LIST_SIZE_P_I(BOOST_PP_TUPLE_REM_2 rl) # define BOOST_PP_LIST_SIZE_P_I(im) BOOST_PP_LIST_SIZE_P_II(im) # define BOOST_PP_LIST_SIZE_P_II(r, l) BOOST_PP_LIST_IS_CONS(l) # endif # # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG() # define BOOST_PP_LIST_SIZE_O(d, rl) (BOOST_PP_INC(BOOST_PP_TUPLE_ELEM(2, 0, rl)), BOOST_PP_LIST_REST(BOOST_PP_TUPLE_ELEM(2, 1, rl))) # else # define BOOST_PP_LIST_SIZE_O(d, rl) BOOST_PP_LIST_SIZE_O_I(BOOST_PP_TUPLE_REM_2 rl) # define BOOST_PP_LIST_SIZE_O_I(im) BOOST_PP_LIST_SIZE_O_II(im) # define BOOST_PP_LIST_SIZE_O_II(r, l) (BOOST_PP_INC(r), BOOST_PP_LIST_REST(l)) # endif # # /* BOOST_PP_LIST_SIZE_D */ # # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG() # define BOOST_PP_LIST_SIZE_D(d, list) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE_ ## d(BOOST_PP_LIST_SIZE_P, BOOST_PP_LIST_SIZE_O, (0, list))) # else # define BOOST_PP_LIST_SIZE_D(d, list) BOOST_PP_LIST_SIZE_D_I(d, list) # define BOOST_PP_LIST_SIZE_D_I(d, list) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE_ ## d(BOOST_PP_LIST_SIZE_P, BOOST_PP_LIST_SIZE_O, (0, list))) # endif # # endif