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

source code of boost/boost/vmd/is_parens_empty.hpp