1 
2 // Copyright (C) 2009-2012 Lorenzo Caminiti
3 // Distributed under the Boost Software License, Version 1.0
4 // (see accompanying file LICENSE_1_0.txt or a copy at
5 // http://www.boost.org/LICENSE_1_0.txt)
6 // Home at http://www.boost.org/libs/local_function
7 
8 #ifndef BOOST_LOCAL_FUNCTION_AUX_PP_BIND_TRAITS_HPP_
9 #define BOOST_LOCAL_FUNCTION_AUX_PP_BIND_TRAITS_HPP_
10 
11 #include <boost/preprocessor/tuple/elem.hpp>
12 
13 // PRIVATE //
14 
15 // Non-this bind is 2-tuple `(name_without_type, name_with_type)`.
16 #define BOOST_LOCAL_FUNCTION_AUX_PP_BIND_TRAITS_INDEX_WITHOUT_TYPE_ 0
17 #define BOOST_LOCAL_FUNCTION_AUX_PP_BIND_TRAITS_INDEX_WITH_TYPE_    1
18 #define BOOST_LOCAL_FUNCTION_AUX_PP_BIND_TRAITS_INDEX_MAX_          2
19 
20 // This bind is 1-typle `([type_] EMPTY)`.
21 #define BOOST_LOCAL_FUNCTION_AUX_PP_BIND_THIS_TRAITS_INDEX_TYPE_    0
22 #define BOOST_LOCAL_FUNCTION_AUX_PP_BIND_THIS_TRAITS_INDEX_MAX_     1
23 
24 // PUBLIC //
25 
26 // Expand: `[&] var_`.
27 #define BOOST_LOCAL_FUNCTION_AUX_PP_BIND_TRAITS_VAR_WITHOUT_TYPE(bind_traits) \
28     BOOST_PP_TUPLE_ELEM(BOOST_LOCAL_FUNCTION_AUX_PP_BIND_TRAITS_INDEX_MAX_, \
29             BOOST_LOCAL_FUNCTION_AUX_PP_BIND_TRAITS_INDEX_WITHOUT_TYPE_, \
30             bind_traits)
31 
32 // Expand: `[type_ [&] var_]` (EMPTY if no type_ specified).
33 #define BOOST_LOCAL_FUNCTION_AUX_PP_BIND_TRAITS_VAR_WITH_TYPE(bind_traits) \
34     BOOST_PP_TUPLE_ELEM(BOOST_LOCAL_FUNCTION_AUX_PP_BIND_TRAITS_INDEX_MAX_, \
35             BOOST_LOCAL_FUNCTION_AUX_PP_BIND_TRAITS_INDEX_WITH_TYPE_, \
36             bind_traits)(/* expand EMPTY */)
37 
38 // Expand: `[type_]` (EMPTY if no type_ specified).
39 #define BOOST_LOCAL_FUNCTION_AUX_PP_BIND_TRAITS_THIS_TYPE(bind_this_traits) \
40     BOOST_PP_TUPLE_ELEM( \
41             BOOST_LOCAL_FUNCTION_AUX_PP_BIND_THIS_TRAITS_INDEX_MAX_, \
42             BOOST_LOCAL_FUNCTION_AUX_PP_BIND_THIS_TRAITS_INDEX_TYPE_, \
43             bind_this_traits)(/* expand EMPTY */)
44 
45 #endif // #include guard
46 
47