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/Src/Dependencies/Boost/boost/proto/detail/args.hpp

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C++ Header | 85 lines | 41 code | 18 blank | 26 comment | 3 complexity | f40a740fe057626f860f593895d6549c MD5 | raw file
 1#if !defined(BOOST_PROTO_DONT_USE_PREPROCESSED_FILES)
 2
 3    #include <boost/proto/detail/preprocessed/args.hpp>
 4
 5#elif !defined(BOOST_PP_IS_ITERATING)
 6
 7    /// INTERNAL ONLY
 8    ///
 9    #define BOOST_PROTO_DEFINE_CHILD_N(Z, N, DATA)                                              \
10        typedef BOOST_PP_CAT(Arg, N) BOOST_PP_CAT(child, N);                                    \
11        /**< INTERNAL ONLY */
12
13    /// INTERNAL ONLY
14    ///
15    #define BOOST_PROTO_DEFINE_VOID_N(z, n, data)                                               \
16        typedef mpl::void_ BOOST_PP_CAT(child, n);                                              \
17        /**< INTERNAL ONLY */
18
19    #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
20        #pragma wave option(preserve: 2, line: 0, output: "preprocessed/args.hpp")
21    #endif
22
23    ///////////////////////////////////////////////////////////////////////////////
24    /// \file args.hpp
25    /// Contains definition of \c term\<\>, \c list1\<\>, \c list2\<\>, ...
26    /// class templates.
27    //
28    //  Copyright 2008 Eric Niebler. Distributed under the Boost
29    //  Software License, Version 1.0. (See accompanying file
30    //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
31
32    #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
33        #pragma wave option(preserve: 1)
34    #endif
35
36    /// \brief A type sequence, for use as the 2nd parameter to the \c expr\<\> class template.
37    ///
38    /// A type sequence, for use as the 2nd parameter to the \c expr\<\> class template.
39    /// The types in the sequence correspond to the children of a node in an expression tree.
40    template< typename Arg0 >
41    struct term
42    {
43        static const long arity = 0;
44        typedef Arg0 child0;
45        BOOST_PP_REPEAT_FROM_TO(1, BOOST_PROTO_MAX_ARITY, BOOST_PROTO_DEFINE_VOID_N, ~)
46
47        /// INTERNAL ONLY
48        ///
49        typedef Arg0 back_;
50    };
51
52    #define BOOST_PP_ITERATION_PARAMS_1                                                         \
53        (3, (1, BOOST_PROTO_MAX_ARITY, <boost/proto/detail/args.hpp>))
54    #include BOOST_PP_ITERATE()
55
56    #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
57        #pragma wave option(output: null)
58    #endif
59
60    #undef BOOST_PROTO_DEFINE_VOID_N
61    #undef BOOST_PROTO_DEFINE_CHILD_N
62
63#else
64
65    #define N BOOST_PP_ITERATION()
66
67    /// \brief A type sequence, for use as the 2nd parameter to the \c expr\<\> class template.
68    ///
69    /// A type sequence, for use as the 2nd parameter to the \c expr\<\> class template.
70    /// The types in the sequence correspond to the children of a node in an expression tree.
71    template< BOOST_PP_ENUM_PARAMS(N, typename Arg) >
72    struct BOOST_PP_CAT(list, N)
73    {
74        static const long arity = N;
75        BOOST_PP_REPEAT(N, BOOST_PROTO_DEFINE_CHILD_N, ~)
76        BOOST_PP_REPEAT_FROM_TO(N, BOOST_PROTO_MAX_ARITY, BOOST_PROTO_DEFINE_VOID_N, ~)
77
78        /// INTERNAL ONLY
79        ///
80        typedef BOOST_PP_CAT(Arg, BOOST_PP_DEC(N)) back_;
81    };
82
83    #undef N
84
85#endif