Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 1 | |
| 2 | // Copyright 2000 John Maddock (john@johnmaddock.co.uk) |
| 3 | // Copyright 2000 Jeremy Siek (jsiek@lsc.nd.edu) |
| 4 | // Copyright 1999, 2000 Jaakko Jarvi (jaakko.jarvi@cs.utu.fi) |
| 5 | // |
| 6 | // Use, modification and distribution are subject to the Boost Software License, |
| 7 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
| 8 | // http://www.boost.org/LICENSE_1_0.txt). |
| 9 | // |
| 10 | // See http://www.boost.org/libs/type_traits for most recent version including documentation. |
| 11 | |
| 12 | #ifndef BOOST_TT_IS_CONVERTIBLE_HPP_INCLUDED |
| 13 | #define BOOST_TT_IS_CONVERTIBLE_HPP_INCLUDED |
| 14 | |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 15 | #include <ndnboost/type_traits/intrinsics.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 16 | #ifndef BOOST_IS_CONVERTIBLE |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 17 | #include <ndnboost/type_traits/detail/yes_no_type.hpp> |
| 18 | #include <ndnboost/type_traits/config.hpp> |
| 19 | #include <ndnboost/type_traits/is_array.hpp> |
| 20 | #include <ndnboost/type_traits/ice.hpp> |
| 21 | #include <ndnboost/type_traits/is_arithmetic.hpp> |
| 22 | #include <ndnboost/type_traits/is_void.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 23 | #ifndef BOOST_NO_IS_ABSTRACT |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 24 | #include <ndnboost/type_traits/is_abstract.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 25 | #endif |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 26 | #include <ndnboost/type_traits/add_lvalue_reference.hpp> |
| 27 | #include <ndnboost/type_traits/add_rvalue_reference.hpp> |
| 28 | #include <ndnboost/type_traits/is_function.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 29 | |
| 30 | #if defined(__MWERKS__) |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 31 | #include <ndnboost/type_traits/remove_reference.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 32 | #endif |
| 33 | |
| 34 | #endif // BOOST_IS_CONVERTIBLE |
| 35 | |
| 36 | // should be always the last #include directive |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 37 | #include <ndnboost/type_traits/detail/bool_trait_def.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 38 | |
| 39 | namespace ndnboost { |
| 40 | |
| 41 | #ifndef BOOST_IS_CONVERTIBLE |
| 42 | |
| 43 | // is one type convertible to another? |
| 44 | // |
| 45 | // there are multiple versions of the is_convertible |
| 46 | // template, almost every compiler seems to require its |
| 47 | // own version. |
| 48 | // |
| 49 | // Thanks to Andrei Alexandrescu for the original version of the |
| 50 | // conversion detection technique! |
| 51 | // |
| 52 | |
| 53 | namespace detail { |
| 54 | |
| 55 | // MS specific version: |
| 56 | |
| 57 | #if defined(BOOST_MSVC) && (BOOST_MSVC <= 1300) |
| 58 | |
| 59 | // This workaround is necessary to handle when From is void |
| 60 | // which is normally taken care of by the partial specialization |
| 61 | // of the is_convertible typename. |
| 62 | using ::ndnboost::type_traits::yes_type; |
| 63 | using ::ndnboost::type_traits::no_type; |
| 64 | |
| 65 | template< typename From > |
| 66 | struct does_conversion_exist |
| 67 | { |
| 68 | template< typename To > struct result_ |
| 69 | { |
| 70 | static no_type BOOST_TT_DECL _m_check(...); |
| 71 | static yes_type BOOST_TT_DECL _m_check(To); |
| 72 | static typename add_lvalue_reference<From>::type _m_from; |
| 73 | enum { value = sizeof( _m_check(_m_from) ) == sizeof(yes_type) }; |
| 74 | }; |
| 75 | }; |
| 76 | |
| 77 | template<> |
| 78 | struct does_conversion_exist<void> |
| 79 | { |
| 80 | template< typename To > struct result_ |
| 81 | { |
| 82 | enum { value = ::ndnboost::is_void<To>::value }; |
| 83 | }; |
| 84 | }; |
| 85 | |
| 86 | template <typename From, typename To> |
| 87 | struct is_convertible_basic_impl |
| 88 | : public does_conversion_exist<From>::template result_<To> |
| 89 | { |
| 90 | }; |
| 91 | |
| 92 | #elif defined(__BORLANDC__) && (__BORLANDC__ < 0x560) |
| 93 | // |
| 94 | // special version for Borland compilers |
| 95 | // this version breaks when used for some |
| 96 | // UDT conversions: |
| 97 | // |
| 98 | template <typename From, typename To> |
| 99 | struct is_convertible_impl |
| 100 | { |
| 101 | #pragma option push -w-8074 |
| 102 | // This workaround for Borland breaks the EDG C++ frontend, |
| 103 | // so we only use it for Borland. |
| 104 | template <typename T> struct checker |
| 105 | { |
| 106 | static ::ndnboost::type_traits::no_type BOOST_TT_DECL _m_check(...); |
| 107 | static ::ndnboost::type_traits::yes_type BOOST_TT_DECL _m_check(T); |
| 108 | }; |
| 109 | |
| 110 | static typename add_lvalue_reference<From>::type _m_from; |
| 111 | static bool const value = sizeof( checker<To>::_m_check(_m_from) ) |
| 112 | == sizeof(::ndnboost::type_traits::yes_type); |
| 113 | #pragma option pop |
| 114 | }; |
| 115 | |
| 116 | #elif defined(__GNUC__) || defined(__BORLANDC__) && (__BORLANDC__ < 0x600) |
| 117 | // special version for gcc compiler + recent Borland versions |
| 118 | // note that this does not pass UDT's through (...) |
| 119 | |
| 120 | struct any_conversion |
| 121 | { |
| 122 | template <typename T> any_conversion(const volatile T&); |
| 123 | template <typename T> any_conversion(const T&); |
| 124 | template <typename T> any_conversion(volatile T&); |
| 125 | template <typename T> any_conversion(T&); |
| 126 | }; |
| 127 | |
| 128 | template <typename T> struct checker |
| 129 | { |
| 130 | static ndnboost::type_traits::no_type _m_check(any_conversion ...); |
| 131 | static ndnboost::type_traits::yes_type _m_check(T, int); |
| 132 | }; |
| 133 | |
| 134 | template <typename From, typename To> |
| 135 | struct is_convertible_basic_impl |
| 136 | { |
| 137 | typedef typename add_lvalue_reference<From>::type lvalue_type; |
| 138 | typedef typename add_rvalue_reference<From>::type rvalue_type; |
| 139 | static lvalue_type _m_from; |
| 140 | #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 6))) |
| 141 | static bool const value = |
| 142 | sizeof( ndnboost::detail::checker<To>::_m_check(static_cast<rvalue_type>(_m_from), 0) ) |
| 143 | == sizeof(::ndnboost::type_traits::yes_type); |
| 144 | #else |
| 145 | static bool const value = |
| 146 | sizeof( ndnboost::detail::checker<To>::_m_check(_m_from, 0) ) |
| 147 | == sizeof(::ndnboost::type_traits::yes_type); |
| 148 | #endif |
| 149 | }; |
| 150 | |
| 151 | #elif (defined(__EDG_VERSION__) && (__EDG_VERSION__ >= 245) && !defined(__ICL)) \ |
| 152 | || defined(__IBMCPP__) || defined(__HP_aCC) |
| 153 | // |
| 154 | // This is *almost* an ideal world implementation as it doesn't rely |
| 155 | // on undefined behaviour by passing UDT's through (...). |
| 156 | // Unfortunately it doesn't quite pass all the tests for most compilers (sigh...) |
| 157 | // Enable this for your compiler if is_convertible_test.cpp will compile it... |
| 158 | // |
| 159 | // Note we do not enable this for VC7.1, because even though it passes all the |
| 160 | // type_traits tests it is known to cause problems when instantiation occurs |
| 161 | // deep within the instantiation tree :-( |
| 162 | // |
| 163 | struct any_conversion |
| 164 | { |
| 165 | template <typename T> any_conversion(const volatile T&); |
| 166 | template <typename T> any_conversion(const T&); |
| 167 | template <typename T> any_conversion(volatile T&); |
| 168 | // we need this constructor to catch references to functions |
| 169 | // (which can not be cv-qualified): |
| 170 | template <typename T> any_conversion(T&); |
| 171 | }; |
| 172 | |
| 173 | template <typename From, typename To> |
| 174 | struct is_convertible_basic_impl |
| 175 | { |
| 176 | static ::ndnboost::type_traits::no_type BOOST_TT_DECL _m_check(any_conversion ...); |
| 177 | static ::ndnboost::type_traits::yes_type BOOST_TT_DECL _m_check(To, int); |
| 178 | typedef typename add_lvalue_reference<From>::type lvalue_type; |
| 179 | typedef typename add_rvalue_reference<From>::type rvalue_type; |
| 180 | static lvalue_type _m_from; |
| 181 | |
| 182 | #ifndef BOOST_NO_CXX11_RVALUE_REFERENCES |
| 183 | BOOST_STATIC_CONSTANT(bool, value = |
| 184 | sizeof( _m_check(static_cast<rvalue_type>(_m_from), 0) ) == sizeof(::ndnboost::type_traits::yes_type) |
| 185 | ); |
| 186 | #else |
| 187 | BOOST_STATIC_CONSTANT(bool, value = |
| 188 | sizeof( _m_check(_m_from, 0) ) == sizeof(::ndnboost::type_traits::yes_type) |
| 189 | ); |
| 190 | #endif |
| 191 | }; |
| 192 | |
| 193 | #elif defined(__DMC__) |
| 194 | |
| 195 | struct any_conversion |
| 196 | { |
| 197 | template <typename T> any_conversion(const volatile T&); |
| 198 | template <typename T> any_conversion(const T&); |
| 199 | template <typename T> any_conversion(volatile T&); |
| 200 | // we need this constructor to catch references to functions |
| 201 | // (which can not be cv-qualified): |
| 202 | template <typename T> any_conversion(T&); |
| 203 | }; |
| 204 | |
| 205 | template <typename From, typename To> |
| 206 | struct is_convertible_basic_impl |
| 207 | { |
| 208 | // Using '...' doesn't always work on Digital Mars. This version seems to. |
| 209 | template <class T> |
| 210 | static ::ndnboost::type_traits::no_type BOOST_TT_DECL _m_check(any_conversion, float, T); |
| 211 | static ::ndnboost::type_traits::yes_type BOOST_TT_DECL _m_check(To, int, int); |
| 212 | typedef typename add_lvalue_reference<From>::type lvalue_type; |
| 213 | typedef typename add_rvalue_reference<From>::type rvalue_type; |
| 214 | static lvalue_type _m_from; |
| 215 | |
| 216 | // Static constants sometime cause the conversion of _m_from to To to be |
| 217 | // called. This doesn't happen with an enum. |
| 218 | #ifndef BOOST_NO_CXX11_RVALUE_REFERENCES |
| 219 | enum { value = |
| 220 | sizeof( _m_check(static_cast<rvalue_type>(_m_from), 0, 0) ) == sizeof(::ndnboost::type_traits::yes_type) |
| 221 | }; |
| 222 | #else |
| 223 | enum { value = |
| 224 | sizeof( _m_check(_m_from, 0, 0) ) == sizeof(::ndnboost::type_traits::yes_type) |
| 225 | }; |
| 226 | #endif |
| 227 | }; |
| 228 | |
| 229 | #elif defined(__MWERKS__) |
| 230 | // |
| 231 | // CW works with the technique implemented above for EDG, except when From |
| 232 | // is a function type (or a reference to such a type), in which case |
| 233 | // any_conversion won't be accepted as a valid conversion. We detect this |
| 234 | // exceptional situation and channel it through an alternative algorithm. |
| 235 | // |
| 236 | |
| 237 | template <typename From, typename To,bool FromIsFunctionRef> |
| 238 | struct is_convertible_basic_impl_aux; |
| 239 | |
| 240 | struct any_conversion |
| 241 | { |
| 242 | template <typename T> any_conversion(const volatile T&); |
| 243 | template <typename T> any_conversion(const T&); |
| 244 | template <typename T> any_conversion(volatile T&); |
| 245 | template <typename T> any_conversion(T&); |
| 246 | }; |
| 247 | |
| 248 | template <typename From, typename To> |
| 249 | struct is_convertible_basic_impl_aux<From,To,false /*FromIsFunctionRef*/> |
| 250 | { |
| 251 | static ::ndnboost::type_traits::no_type BOOST_TT_DECL _m_check(any_conversion ...); |
| 252 | static ::ndnboost::type_traits::yes_type BOOST_TT_DECL _m_check(To, int); |
| 253 | typedef typename add_lvalue_reference<From>::type lvalue_type; |
| 254 | typedef typename add_rvalue_reference<From>::type rvalue_type; |
| 255 | static lvalue_type _m_from; |
| 256 | |
| 257 | #ifndef BOOST_NO_CXX11_RVALUE_REFERENCES |
| 258 | BOOST_STATIC_CONSTANT(bool, value = |
| 259 | sizeof( _m_check(static_cast<rvalue_type>(_m_from), 0) ) == sizeof(::ndnboost::type_traits::yes_type) |
| 260 | ); |
| 261 | #else |
| 262 | BOOST_STATIC_CONSTANT(bool, value = |
| 263 | sizeof( _m_check(_m_from, 0) ) == sizeof(::ndnboost::type_traits::yes_type) |
| 264 | ); |
| 265 | #endif |
| 266 | }; |
| 267 | |
| 268 | template <typename From, typename To> |
| 269 | struct is_convertible_basic_impl_aux<From,To,true /*FromIsFunctionRef*/> |
| 270 | { |
| 271 | static ::ndnboost::type_traits::no_type BOOST_TT_DECL _m_check(...); |
| 272 | static ::ndnboost::type_traits::yes_type BOOST_TT_DECL _m_check(To); |
| 273 | typedef typename add_lvalue_reference<From>::type lvalue_type; |
| 274 | typedef typename add_rvalue_reference<From>::type rvalue_type; |
| 275 | static lvalue_type _m_from; |
| 276 | #ifndef BOOST_NO_CXX11_RVALUE_REFERENCES |
| 277 | BOOST_STATIC_CONSTANT(bool, value = |
| 278 | sizeof( _m_check(static_cast<rvalue_type>(_m_from)) ) == sizeof(::ndnboost::type_traits::yes_type) |
| 279 | ); |
| 280 | #else |
| 281 | BOOST_STATIC_CONSTANT(bool, value = |
| 282 | sizeof( _m_check(_m_from) ) == sizeof(::ndnboost::type_traits::yes_type) |
| 283 | ); |
| 284 | #endif |
| 285 | }; |
| 286 | |
| 287 | template <typename From, typename To> |
| 288 | struct is_convertible_basic_impl: |
| 289 | is_convertible_basic_impl_aux< |
| 290 | From,To, |
| 291 | ::ndnboost::is_function<typename ::ndnboost::remove_reference<From>::type>::value |
| 292 | > |
| 293 | {}; |
| 294 | |
| 295 | #else |
| 296 | // |
| 297 | // This version seems to work pretty well for a wide spectrum of compilers, |
| 298 | // however it does rely on undefined behaviour by passing UDT's through (...). |
| 299 | // |
| 300 | template <typename From, typename To> |
| 301 | struct is_convertible_basic_impl |
| 302 | { |
| 303 | static ::ndnboost::type_traits::no_type BOOST_TT_DECL _m_check(...); |
| 304 | static ::ndnboost::type_traits::yes_type BOOST_TT_DECL _m_check(To); |
| 305 | typedef typename add_lvalue_reference<From>::type lvalue_type; |
| 306 | typedef typename add_rvalue_reference<From>::type rvalue_type; |
| 307 | static lvalue_type _m_from; |
| 308 | #ifdef BOOST_MSVC |
| 309 | #pragma warning(push) |
| 310 | #pragma warning(disable:4244) |
| 311 | #if BOOST_WORKAROUND(BOOST_MSVC_FULL_VER, >= 140050000) |
| 312 | #pragma warning(disable:6334) |
| 313 | #endif |
| 314 | #endif |
| 315 | #ifndef BOOST_NO_CXX11_RVALUE_REFERENCES |
| 316 | BOOST_STATIC_CONSTANT(bool, value = |
| 317 | sizeof( _m_check(static_cast<rvalue_type>(_m_from)) ) == sizeof(::ndnboost::type_traits::yes_type) |
| 318 | ); |
| 319 | #else |
| 320 | BOOST_STATIC_CONSTANT(bool, value = |
| 321 | sizeof( _m_check(_m_from) ) == sizeof(::ndnboost::type_traits::yes_type) |
| 322 | ); |
| 323 | #endif |
| 324 | #ifdef BOOST_MSVC |
| 325 | #pragma warning(pop) |
| 326 | #endif |
| 327 | }; |
| 328 | |
| 329 | #endif // is_convertible_impl |
| 330 | |
| 331 | #if defined(__DMC__) |
| 332 | // As before, a static constant sometimes causes errors on Digital Mars. |
| 333 | template <typename From, typename To> |
| 334 | struct is_convertible_impl |
| 335 | { |
| 336 | enum { value = |
| 337 | (::ndnboost::type_traits::ice_and< |
| 338 | ::ndnboost::type_traits::ice_or< |
| 339 | ::ndnboost::detail::is_convertible_basic_impl<From,To>::value, |
| 340 | ::ndnboost::is_void<To>::value |
| 341 | >::value, |
| 342 | ::ndnboost::type_traits::ice_not< |
| 343 | ::ndnboost::is_array<To>::value |
| 344 | >::value, |
| 345 | ::ndnboost::type_traits::ice_not< |
| 346 | ::ndnboost::is_function<To>::value |
| 347 | >::value |
| 348 | >::value) }; |
| 349 | }; |
| 350 | #elif !defined(__BORLANDC__) || __BORLANDC__ > 0x551 |
| 351 | template <typename From, typename To> |
| 352 | struct is_convertible_impl |
| 353 | { |
| 354 | BOOST_STATIC_CONSTANT(bool, value = |
| 355 | (::ndnboost::type_traits::ice_and< |
| 356 | ::ndnboost::type_traits::ice_or< |
| 357 | ::ndnboost::detail::is_convertible_basic_impl<From,To>::value, |
| 358 | ::ndnboost::is_void<To>::value |
| 359 | >::value, |
| 360 | ::ndnboost::type_traits::ice_not< |
| 361 | ::ndnboost::is_array<To>::value |
| 362 | >::value, |
| 363 | ::ndnboost::type_traits::ice_not< |
| 364 | ::ndnboost::is_function<To>::value |
| 365 | >::value |
| 366 | >::value) |
| 367 | ); |
| 368 | }; |
| 369 | #endif |
| 370 | |
| 371 | template <bool trivial1, bool trivial2, bool abstract_target> |
| 372 | struct is_convertible_impl_select |
| 373 | { |
| 374 | template <class From, class To> |
| 375 | struct rebind |
| 376 | { |
| 377 | typedef is_convertible_impl<From, To> type; |
| 378 | }; |
| 379 | }; |
| 380 | |
| 381 | template <> |
| 382 | struct is_convertible_impl_select<true, true, false> |
| 383 | { |
| 384 | template <class From, class To> |
| 385 | struct rebind |
| 386 | { |
| 387 | typedef true_type type; |
| 388 | }; |
| 389 | }; |
| 390 | |
| 391 | template <> |
| 392 | struct is_convertible_impl_select<false, false, true> |
| 393 | { |
| 394 | template <class From, class To> |
| 395 | struct rebind |
| 396 | { |
| 397 | typedef false_type type; |
| 398 | }; |
| 399 | }; |
| 400 | |
| 401 | template <> |
| 402 | struct is_convertible_impl_select<true, false, true> |
| 403 | { |
| 404 | template <class From, class To> |
| 405 | struct rebind |
| 406 | { |
| 407 | typedef false_type type; |
| 408 | }; |
| 409 | }; |
| 410 | |
| 411 | template <typename From, typename To> |
| 412 | struct is_convertible_impl_dispatch_base |
| 413 | { |
| 414 | #if !BOOST_WORKAROUND(__HP_aCC, < 60700) |
| 415 | typedef is_convertible_impl_select< |
| 416 | ::ndnboost::is_arithmetic<From>::value, |
| 417 | ::ndnboost::is_arithmetic<To>::value, |
| 418 | #ifndef BOOST_NO_IS_ABSTRACT |
| 419 | ::ndnboost::is_abstract<To>::value |
| 420 | #else |
| 421 | false |
| 422 | #endif |
| 423 | > selector; |
| 424 | #else |
| 425 | typedef is_convertible_impl_select<false, false, false> selector; |
| 426 | #endif |
| 427 | typedef typename selector::template rebind<From, To> isc_binder; |
| 428 | typedef typename isc_binder::type type; |
| 429 | }; |
| 430 | |
| 431 | template <typename From, typename To> |
| 432 | struct is_convertible_impl_dispatch |
| 433 | : public is_convertible_impl_dispatch_base<From, To>::type |
| 434 | {}; |
| 435 | |
| 436 | // |
| 437 | // Now add the full and partial specialisations |
| 438 | // for void types, these are common to all the |
| 439 | // implementation above: |
| 440 | // |
| 441 | #ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS |
| 442 | # define TT_AUX_BOOL_CV_VOID_TRAIT_SPEC2_PART1(trait,spec1,spec2,value) \ |
| 443 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC2(trait,spec1,spec2,value) \ |
| 444 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC2(trait,spec1,spec2 const,value) \ |
| 445 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC2(trait,spec1,spec2 volatile,value) \ |
| 446 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC2(trait,spec1,spec2 const volatile,value) \ |
| 447 | /**/ |
| 448 | |
| 449 | # define TT_AUX_BOOL_CV_VOID_TRAIT_SPEC2(trait,spec1,spec2,value) \ |
| 450 | TT_AUX_BOOL_CV_VOID_TRAIT_SPEC2_PART1(trait,spec1,spec2,value) \ |
| 451 | TT_AUX_BOOL_CV_VOID_TRAIT_SPEC2_PART1(trait,spec1 const,spec2,value) \ |
| 452 | TT_AUX_BOOL_CV_VOID_TRAIT_SPEC2_PART1(trait,spec1 volatile,spec2,value) \ |
| 453 | TT_AUX_BOOL_CV_VOID_TRAIT_SPEC2_PART1(trait,spec1 const volatile,spec2,value) \ |
| 454 | /**/ |
| 455 | |
| 456 | TT_AUX_BOOL_CV_VOID_TRAIT_SPEC2(is_convertible,void,void,true) |
| 457 | |
| 458 | # undef TT_AUX_BOOL_CV_VOID_TRAIT_SPEC2 |
| 459 | # undef TT_AUX_BOOL_CV_VOID_TRAIT_SPEC2_PART1 |
| 460 | |
| 461 | #else |
| 462 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC2(is_convertible,void,void,true) |
| 463 | #endif // BOOST_NO_CV_VOID_SPECIALIZATIONS |
| 464 | |
| 465 | #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
| 466 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_PARTIAL_SPEC2_1(typename To,is_convertible,void,To,false) |
| 467 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_PARTIAL_SPEC2_1(typename From,is_convertible,From,void,false) |
| 468 | #ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS |
| 469 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_PARTIAL_SPEC2_1(typename To,is_convertible,void const,To,false) |
| 470 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_PARTIAL_SPEC2_1(typename To,is_convertible,void volatile,To,false) |
| 471 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_PARTIAL_SPEC2_1(typename To,is_convertible,void const volatile,To,false) |
| 472 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_PARTIAL_SPEC2_1(typename From,is_convertible,From,void const,false) |
| 473 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_PARTIAL_SPEC2_1(typename From,is_convertible,From,void volatile,false) |
| 474 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_PARTIAL_SPEC2_1(typename From,is_convertible,From,void const volatile,false) |
| 475 | #endif |
| 476 | #endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
| 477 | |
| 478 | } // namespace detail |
| 479 | |
| 480 | BOOST_TT_AUX_BOOL_TRAIT_DEF2(is_convertible,From,To,(::ndnboost::detail::is_convertible_impl_dispatch<From,To>::value)) |
| 481 | |
| 482 | #else |
| 483 | |
| 484 | BOOST_TT_AUX_BOOL_TRAIT_DEF2(is_convertible,From,To,BOOST_IS_CONVERTIBLE(From,To)) |
| 485 | |
| 486 | #endif |
| 487 | |
| 488 | } // namespace ndnboost |
| 489 | |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 490 | #include <ndnboost/type_traits/detail/bool_trait_undef.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 491 | |
| 492 | #endif // BOOST_TT_IS_CONVERTIBLE_HPP_INCLUDED |