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 | |