Brian Silverman | f27e085 | 2018-08-04 23:56:45 -0700 | [diff] [blame^] | 1 | # /* Copyright (C) 2002 |
| 2 | # * Housemarque Oy |
| 3 | # * http://www.housemarque.com |
| 4 | # * |
| 5 | # * Distributed under the Boost Software License, Version 1.0. (See |
| 6 | # * accompanying file LICENSE_1_0.txt or copy at |
| 7 | # * http://www.boost.org/LICENSE_1_0.txt) |
| 8 | # */ |
| 9 | # |
| 10 | # /* Revised by Paul Mensonides (2002) */ |
| 11 | # |
| 12 | # /* See http://www.boost.org for most recent version. */ |
| 13 | # |
| 14 | # /* This example demonstrates the usage of preprocessor lists for generating C++ code. */ |
| 15 | # |
| 16 | # include <boost/preprocessor/facilities/empty.hpp> |
| 17 | # include <boost/preprocessor/list/at.hpp> |
| 18 | # include <boost/preprocessor/list/for_each_product.hpp> |
| 19 | # include <boost/preprocessor/tuple/elem.hpp> |
| 20 | # include <boost/preprocessor/tuple/to_list.hpp> |
| 21 | # |
| 22 | # /* List of integral types. (Strictly speaking, wchar_t should be on the list.) */ |
| 23 | # define INTEGRAL_TYPES \ |
| 24 | BOOST_PP_TUPLE_TO_LIST( \ |
| 25 | 9, (char, signed char, unsigned char, short, unsigned short, int, unsigned, long, unsigned long) \ |
| 26 | ) \ |
| 27 | /**/ |
| 28 | # |
| 29 | # /* List of invokeable cv-qualifiers */ |
| 30 | # define CV_QUALIFIERS \ |
| 31 | BOOST_PP_TUPLE_TO_LIST( \ |
| 32 | 4, (BOOST_PP_EMPTY, const BOOST_PP_EMPTY, volatile BOOST_PP_EMPTY, const volatile BOOST_PP_EMPTY) \ |
| 33 | ) \ |
| 34 | /**/ |
| 35 | # |
| 36 | # /* Template for testing whether a type is an integral type. */ |
| 37 | |
| 38 | template<class T> struct is_integral { |
| 39 | enum { value = false }; |
| 40 | }; |
| 41 | |
| 42 | # /* Macro for defining a specialization of is_integral<> template. */ |
| 43 | # define IS_INTEGRAL_SPECIALIZATION(R, L) \ |
| 44 | template<> struct is_integral<BOOST_PP_TUPLE_ELEM(2, 0, L)() BOOST_PP_TUPLE_ELEM(2, 1, L)> { \ |
| 45 | enum { value = true }; \ |
| 46 | }; \ |
| 47 | /**/ |
| 48 | |
| 49 | BOOST_PP_LIST_FOR_EACH_PRODUCT(IS_INTEGRAL_SPECIALIZATION, 2, (CV_QUALIFIERS, INTEGRAL_TYPES)) |