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_LIST_HPP)
8#define BOOST_VMD_IS_LIST_HPP
9
10#include <boost/vmd/detail/setup.hpp>
11
12#if BOOST_PP_VARIADICS
13
14#include <boost/vmd/detail/is_list.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_LIST(sequence)
26
27 \brief Determines if a sequence is a Boost pplib list.
28
29 The macro checks that the sequence is a pplib list.
30 It returns 1 if it is a list, else if returns 0.
31
32 sequence = input as a possible Boost PP list.
33
34 returns = 1 if it a list, else returns 0.
35
36 The macro will generate a preprocessing error if the input
37 is in the form of a list but its end-of-list marker, instead
38 of being an identifier, is a preprocessor token which VMD cannot parse,
39 as in the example '(anything,&BOOST_PP_NIL)' which is a valid tuple but
40 an invalid list.
41
42*/
43
44#define BOOST_VMD_IS_LIST(sequence) \
45 BOOST_VMD_DETAIL_IS_LIST(sequence) \
46/**/
47
48/** \def BOOST_VMD_IS_LIST_D(d,sequence)
49
50 \brief Determines if a sequence is a Boost pplib list. Re-entrant version.
51
52 The macro checks that the sequence is a pplib list.
53 It returns 1 if it is a list, else if returns 0.
54
55 d = The next available BOOST_PP_WHILE iteration.
56 sequence = input as a possible Boost PP list.
57
58 returns = 1 if it a list, else returns 0.
59
60 The macro will generate a preprocessing error if the input
61 is in the form of a list but its end-of-list marker, instead
62 of being an identifier, is a preprocessor token which VMD cannot parse,
63 as in the example '(anything,&BOOST_PP_NIL)' which is a valid tuple but
64 an invalid list.
65
66*/
67
68#define BOOST_VMD_IS_LIST_D(d,sequence) \
69 BOOST_VMD_DETAIL_IS_LIST_D(d,sequence) \
70/**/
71
72#endif /* BOOST_PP_VARIADICS */
73#endif /* BOOST_VMD_IS_LIST_HPP */
74

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