2 // NO INCLUDE GUARDS, THE HEADER IS INTENDED FOR MULTIPLE INCLUSION
4 // Copyright Aleksey Gurtovoy 2002-2004
6 // Distributed under the Boost Software License, Version 1.0.
7 // (See accompanying file LICENSE_1_0.txt or copy at
8 // http://www.boost.org/LICENSE_1_0.txt)
11 // $Date: 2006-07-12 07:10:22 -0400 (Wed, 12 Jul 2006) $
14 #include <boost/type_traits/detail/template_arity_spec.hpp>
15 #include <boost/type_traits/integral_constant.hpp>
16 #include <boost/mpl/bool.hpp>
17 #include <boost/mpl/aux_/lambda_support.hpp>
18 #include <boost/config.hpp>
21 // Unfortunately some libraries have started using this header without
22 // cleaning up afterwards: so we'd better undef the macros just in case
23 // they've been defined already....
25 #ifdef BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL
26 #undef BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL
27 #undef BOOST_TT_AUX_BOOL_C_BASE
28 #undef BOOST_TT_AUX_BOOL_TRAIT_DEF1
29 #undef BOOST_TT_AUX_BOOL_TRAIT_DEF2
30 #undef BOOST_TT_AUX_BOOL_TRAIT_SPEC1
31 #undef BOOST_TT_AUX_BOOL_TRAIT_SPEC2
32 #undef BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1
33 #undef BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC2
34 #undef BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1
35 #undef BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_2
36 #undef BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC2_1
37 #undef BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC2_2
38 #undef BOOST_TT_AUX_BOOL_TRAIT_IMPL_PARTIAL_SPEC2_1
39 #undef BOOST_TT_AUX_BOOL_TRAIT_CV_SPEC1
42 #if defined(__SUNPRO_CC) && (__SUNPRO_CC < 0x570)
43 # define BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(C) \
44 typedef ::boost::integral_constant<bool,C> type; \
45 enum { value = type::value }; \
47 # define BOOST_TT_AUX_BOOL_C_BASE(C)
49 #elif defined(BOOST_MSVC) && BOOST_MSVC < 1300
51 # define BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(C) \
52 typedef ::boost::integral_constant<bool,C> base_; \
58 #ifndef BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL
59 # define BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(C) /**/
62 #ifndef BOOST_TT_AUX_BOOL_C_BASE
63 # define BOOST_TT_AUX_BOOL_C_BASE(C) : ::boost::integral_constant<bool,C>
67 #define BOOST_TT_AUX_BOOL_TRAIT_DEF1(trait,T,C) \
68 template< typename T > struct trait \
69 BOOST_TT_AUX_BOOL_C_BASE(C) \
71 BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(C) \
72 BOOST_MPL_AUX_LAMBDA_SUPPORT(1,trait,(T)) \
75 BOOST_TT_AUX_TEMPLATE_ARITY_SPEC(1,trait) \
79 #define BOOST_TT_AUX_BOOL_TRAIT_DEF2(trait,T1,T2,C) \
80 template< typename T1, typename T2 > struct trait \
81 BOOST_TT_AUX_BOOL_C_BASE(C) \
83 BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(C) \
84 BOOST_MPL_AUX_LAMBDA_SUPPORT(2,trait,(T1,T2)) \
87 BOOST_TT_AUX_TEMPLATE_ARITY_SPEC(2,trait) \
90 #define BOOST_TT_AUX_BOOL_TRAIT_SPEC1(trait,sp,C) \
91 template<> struct trait< sp > \
92 BOOST_TT_AUX_BOOL_C_BASE(C) \
94 BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(C) \
95 BOOST_MPL_AUX_LAMBDA_SUPPORT_SPEC(1,trait,(sp)) \
99 #define BOOST_TT_AUX_BOOL_TRAIT_SPEC2(trait,sp1,sp2,C) \
100 template<> struct trait< sp1,sp2 > \
101 BOOST_TT_AUX_BOOL_C_BASE(C) \
103 BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(C) \
104 BOOST_MPL_AUX_LAMBDA_SUPPORT_SPEC(2,trait,(sp1,sp2)) \
108 #define BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(trait,sp,C) \
109 template<> struct trait##_impl< sp > \
111 BOOST_STATIC_CONSTANT(bool, value = (C)); \
115 #define BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC2(trait,sp1,sp2,C) \
116 template<> struct trait##_impl< sp1,sp2 > \
118 BOOST_STATIC_CONSTANT(bool, value = (C)); \
122 #define BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(param,trait,sp,C) \
123 template< param > struct trait< sp > \
124 BOOST_TT_AUX_BOOL_C_BASE(C) \
126 BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(C) \
130 #define BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_2(param1,param2,trait,sp,C) \
131 template< param1, param2 > struct trait< sp > \
132 BOOST_TT_AUX_BOOL_C_BASE(C) \
134 BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(C) \
138 #define BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC2_1(param,trait,sp1,sp2,C) \
139 template< param > struct trait< sp1,sp2 > \
140 BOOST_TT_AUX_BOOL_C_BASE(C) \
142 BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(C) \
143 BOOST_MPL_AUX_LAMBDA_SUPPORT_SPEC(2,trait,(sp1,sp2)) \
147 #define BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC2_2(param1,param2,trait,sp1,sp2,C) \
148 template< param1, param2 > struct trait< sp1,sp2 > \
149 BOOST_TT_AUX_BOOL_C_BASE(C) \
151 BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(C) \
155 #define BOOST_TT_AUX_BOOL_TRAIT_IMPL_PARTIAL_SPEC2_1(param,trait,sp1,sp2,C) \
156 template< param > struct trait##_impl< sp1,sp2 > \
158 BOOST_STATIC_CONSTANT(bool, value = (C)); \
162 #ifndef BOOST_NO_CV_SPECIALIZATIONS
163 # define BOOST_TT_AUX_BOOL_TRAIT_CV_SPEC1(trait,sp,value) \
164 BOOST_TT_AUX_BOOL_TRAIT_SPEC1(trait,sp,value) \
165 BOOST_TT_AUX_BOOL_TRAIT_SPEC1(trait,sp const,value) \
166 BOOST_TT_AUX_BOOL_TRAIT_SPEC1(trait,sp volatile,value) \
167 BOOST_TT_AUX_BOOL_TRAIT_SPEC1(trait,sp const volatile,value) \
170 # define BOOST_TT_AUX_BOOL_TRAIT_CV_SPEC1(trait,sp,value) \
171 BOOST_TT_AUX_BOOL_TRAIT_SPEC1(trait,sp,value) \