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2 | // Copyright Aleksey Gurtovoy 2000-2006 | |
3 | // | |
4 | // Distributed under the Boost Software License, Version 1.0. | |
5 | // (See accompanying file LICENSE_1_0.txt or copy at | |
6 | // http://www.boost.org/LICENSE_1_0.txt) | |
7 | // | |
8 | // See http://www.boost.org/libs/mpl for documentation. | |
9 | ||
10 | // $Id$ | |
11 | // $Date$ | |
12 | // $Revision$ | |
13 | ||
14 | // NO INCLUDE GUARDS, THE HEADER IS INTENDED FOR MULTIPLE INCLUSION! | |
15 | ||
16 | #include <boost/mpl/integral_c_tag.hpp> | |
17 | #include <boost/mpl/aux_/static_cast.hpp> | |
18 | #include <boost/mpl/aux_/nttp_decl.hpp> | |
19 | #include <boost/mpl/aux_/config/static_constant.hpp> | |
20 | #include <boost/mpl/aux_/config/workaround.hpp> | |
21 | ||
22 | #include <boost/preprocessor/cat.hpp> | |
23 | ||
24 | #if !defined(AUX_WRAPPER_NAME) | |
25 | # define AUX_WRAPPER_NAME BOOST_PP_CAT(AUX_WRAPPER_VALUE_TYPE,_) | |
26 | #endif | |
27 | ||
28 | #if !defined(AUX_WRAPPER_PARAMS) | |
29 | # define AUX_WRAPPER_PARAMS(N) BOOST_MPL_AUX_NTTP_DECL(AUX_WRAPPER_VALUE_TYPE, N) | |
30 | #endif | |
31 | ||
32 | #if !defined(AUX_WRAPPER_INST) | |
33 | # if BOOST_WORKAROUND(__MWERKS__, <= 0x2407) | |
34 | # define AUX_WRAPPER_INST(value) AUX_WRAPPER_NAME< value > | |
35 | # else | |
36 | # define AUX_WRAPPER_INST(value) BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE::AUX_WRAPPER_NAME< value > | |
37 | # endif | |
38 | #endif | |
39 | ||
40 | BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_OPEN | |
41 | ||
42 | template< AUX_WRAPPER_PARAMS(N) > | |
43 | struct AUX_WRAPPER_NAME | |
44 | { | |
45 | BOOST_STATIC_CONSTANT(AUX_WRAPPER_VALUE_TYPE, value = N); | |
46 | // agurt, 08/mar/03: SGI MIPSpro C++ workaround, have to #ifdef because some | |
47 | // other compilers (e.g. MSVC) are not particulary happy about it | |
48 | #if BOOST_WORKAROUND(__EDG_VERSION__, <= 238) | |
49 | typedef struct AUX_WRAPPER_NAME type; | |
50 | #else | |
51 | typedef AUX_WRAPPER_NAME type; | |
52 | #endif | |
53 | typedef AUX_WRAPPER_VALUE_TYPE value_type; | |
54 | typedef integral_c_tag tag; | |
55 | ||
56 | // have to #ifdef here: some compilers don't like the 'N + 1' form (MSVC), | |
57 | // while some other don't like 'value + 1' (Borland), and some don't like | |
58 | // either | |
59 | #if BOOST_WORKAROUND(__EDG_VERSION__, <= 243) | |
60 | private: | |
61 | BOOST_STATIC_CONSTANT(AUX_WRAPPER_VALUE_TYPE, next_value = BOOST_MPL_AUX_STATIC_CAST(AUX_WRAPPER_VALUE_TYPE, (N + 1))); | |
62 | BOOST_STATIC_CONSTANT(AUX_WRAPPER_VALUE_TYPE, prior_value = BOOST_MPL_AUX_STATIC_CAST(AUX_WRAPPER_VALUE_TYPE, (N - 1))); | |
63 | public: | |
64 | typedef AUX_WRAPPER_INST(next_value) next; | |
65 | typedef AUX_WRAPPER_INST(prior_value) prior; | |
20effc67 | 66 | #elif BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x561)) \ |
7c673cae FG |
67 | || BOOST_WORKAROUND(__IBMCPP__, BOOST_TESTED_AT(502)) \ |
68 | || (BOOST_WORKAROUND(__HP_aCC, <= 53800) && (BOOST_WORKAROUND(__hpxstd98, != 1))) | |
69 | typedef AUX_WRAPPER_INST( BOOST_MPL_AUX_STATIC_CAST(AUX_WRAPPER_VALUE_TYPE, (N + 1)) ) next; | |
70 | typedef AUX_WRAPPER_INST( BOOST_MPL_AUX_STATIC_CAST(AUX_WRAPPER_VALUE_TYPE, (N - 1)) ) prior; | |
71 | #else | |
72 | typedef AUX_WRAPPER_INST( BOOST_MPL_AUX_STATIC_CAST(AUX_WRAPPER_VALUE_TYPE, (value + 1)) ) next; | |
73 | typedef AUX_WRAPPER_INST( BOOST_MPL_AUX_STATIC_CAST(AUX_WRAPPER_VALUE_TYPE, (value - 1)) ) prior; | |
74 | #endif | |
75 | ||
76 | // enables uniform function call syntax for families of overloaded | |
77 | // functions that return objects of both arithmetic ('int', 'long', | |
78 | // 'double', etc.) and wrapped integral types (for an example, see | |
79 | // "mpl/example/power.cpp") | |
80 | BOOST_CONSTEXPR operator AUX_WRAPPER_VALUE_TYPE() const { return static_cast<AUX_WRAPPER_VALUE_TYPE>(this->value); } | |
81 | }; | |
82 | ||
83 | #if !defined(BOOST_NO_INCLASS_MEMBER_INITIALIZATION) | |
84 | template< AUX_WRAPPER_PARAMS(N) > | |
85 | AUX_WRAPPER_VALUE_TYPE const AUX_WRAPPER_INST(N)::value; | |
86 | #endif | |
87 | ||
88 | BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_CLOSE | |
89 | ||
90 | #undef AUX_WRAPPER_NAME | |
91 | #undef AUX_WRAPPER_PARAMS | |
92 | #undef AUX_WRAPPER_INST | |
93 | #undef AUX_WRAPPER_VALUE_TYPE |