1 | |
2 | // (C) Copyright Edward Diener 2011-2015 |
3 | // Use, modification and distribution are subject to the Boost Software License, |
4 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
5 | // http://www.boost.org/LICENSE_1_0.txt). |
6 | |
7 | #if !defined(BOOST_VMD_IS_PARENS_EMPTY_HPP) |
8 | #define BOOST_VMD_IS_PARENS_EMPTY_HPP |
9 | |
10 | #include <boost/vmd/detail/setup.hpp> |
11 | |
12 | #if BOOST_PP_VARIADICS |
13 | |
14 | #include <boost/vmd/detail/is_empty_tuple.hpp> |
15 | |
16 | /* |
17 | |
18 | The succeeding comments in this file are in doxygen format. |
19 | |
20 | */ |
21 | |
22 | /** \file |
23 | */ |
24 | |
25 | /** \def BOOST_VMD_IS_PARENS_EMPTY(sequence) |
26 | |
27 | \brief Determines if the sequence is a set of parens with no data. |
28 | |
29 | sequence = a VMD sequence |
30 | |
31 | returns = 1 if the sequence is a set of parens with no data, |
32 | else returns 0. |
33 | |
34 | A set of parens with no data may be: |
35 | |
36 | 1) a tuple whose size is a single element which is empty |
37 | |
38 | or |
39 | |
40 | 2) a single element seq whose data is empty |
41 | |
42 | */ |
43 | |
44 | #define BOOST_VMD_IS_PARENS_EMPTY(sequence) \ |
45 | BOOST_VMD_DETAIL_IS_EMPTY_TUPLE(sequence) \ |
46 | /**/ |
47 | |
48 | /** \def BOOST_VMD_IS_PARENS_EMPTY_D(d,sequence) |
49 | |
50 | \brief Determines if the sequence is a set of parens with no data. Re-entrant version. |
51 | |
52 | d = The next available BOOST_PP_WHILE iteration. |
53 | sequence = a VMD sequence |
54 | |
55 | returns = 1 if the sequence is a set of parens with no data, |
56 | else returns 0. |
57 | |
58 | A set of parens with no data may be: |
59 | |
60 | 1) a tuple whose size is a single element which is empty |
61 | |
62 | or |
63 | |
64 | 2) a single element seq whose data is empty |
65 | |
66 | */ |
67 | |
68 | #define BOOST_VMD_IS_PARENS_EMPTY_D(d,sequence) \ |
69 | BOOST_VMD_DETAIL_IS_EMPTY_TUPLE_D(d,sequence) \ |
70 | /**/ |
71 | |
72 | #endif /* BOOST_PP_VARIADICS */ |
73 | #endif /* BOOST_VMD_IS_PARENS_EMPTY_HPP */ |
74 | |