1 // © 2016 and later: Unicode, Inc. and others. 2 // License & terms of use: http://www.unicode.org/copyright.html 3 /* 4 ****************************************************************************** 5 * 6 * Copyright (C) 1997-2016, International Business Machines 7 * Corporation and others. All Rights Reserved. 8 * 9 ****************************************************************************** 10 * 11 * FILE NAME : platform.h 12 * 13 * Date Name Description 14 * 05/13/98 nos Creation (content moved here from ptypes.h). 15 * 03/02/99 stephen Added AS400 support. 16 * 03/30/99 stephen Added Linux support. 17 * 04/13/99 stephen Reworked for autoconf. 18 ****************************************************************************** 19 */ 20 21 #ifndef _PLATFORM_H 22 #define _PLATFORM_H 23 24 #include "unicode/uconfig.h" 25 #include "unicode/uvernum.h" 26 27 /** 28 * \file 29 * \brief Basic types for the platform. 30 * 31 * This file used to be generated by autoconf/configure. 32 * Starting with ICU 49, platform.h is a normal source file, 33 * to simplify cross-compiling and working with non-autoconf/make build systems. 34 * 35 * When a value in this file does not work on a platform, then please 36 * try to derive it from the U_PLATFORM value 37 * (for which we might need a new value constant in rare cases) 38 * and/or from other macros that are predefined by the compiler 39 * or defined in standard (POSIX or platform or compiler) headers. 40 * 41 * As a temporary workaround, you can add an explicit \#define for some macros 42 * before it is first tested, or add an equivalent -D macro definition 43 * to the compiler's command line. 44 * 45 * Note: Some compilers provide ways to show the predefined macros. 46 * For example, with gcc you can compile an empty .c file and have the compiler 47 * print the predefined macros with 48 * \code 49 * gcc -E -dM -x c /dev/null | sort 50 * \endcode 51 * (You can provide an actual empty .c file rather than /dev/null. 52 * <code>-x c++</code> is for C++.) 53 */ 54 55 /** 56 * Define some things so that they can be documented. 57 * @internal 58 */ 59 #ifdef U_IN_DOXYGEN 60 /* 61 * Problem: "platform.h:335: warning: documentation for unknown define U_HAVE_STD_STRING found." means that U_HAVE_STD_STRING is not documented. 62 * Solution: #define any defines for non @internal API here, so that they are visible in the docs. If you just set PREDEFINED in Doxyfile.in, they won't be documented. 63 */ 64 65 /* None for now. */ 66 #endif 67 68 /** 69 * \def U_PLATFORM 70 * The U_PLATFORM macro defines the platform we're on. 71 * 72 * We used to define one different, value-less macro per platform. 73 * That made it hard to know the set of relevant platforms and macros, 74 * and hard to deal with variants of platforms. 75 * 76 * Starting with ICU 49, we define platforms as numeric macros, 77 * with ranges of values for related platforms and their variants. 78 * The U_PLATFORM macro is set to one of these values. 79 * 80 * Historical note from the Solaris Wikipedia article: 81 * AT&T and Sun collaborated on a project to merge the most popular Unix variants 82 * on the market at that time: BSD, System V, and Xenix. 83 * This became Unix System V Release 4 (SVR4). 84 * 85 * @internal 86 */ 87 88 /** Unknown platform. @internal */ 89 #define U_PF_UNKNOWN 0 90 /** Windows @internal */ 91 #define U_PF_WINDOWS 1000 92 /** MinGW. Windows, calls to Win32 API, but using GNU gcc and binutils. @internal */ 93 #define U_PF_MINGW 1800 94 /** 95 * Cygwin. Windows, calls to cygwin1.dll for Posix functions, 96 * using MSVC or GNU gcc and binutils. 97 * @internal 98 */ 99 #define U_PF_CYGWIN 1900 100 /* Reserve 2000 for U_PF_UNIX? */ 101 /** HP-UX is based on UNIX System V. @internal */ 102 #define U_PF_HPUX 2100 103 /** Solaris is a Unix operating system based on SVR4. @internal */ 104 #define U_PF_SOLARIS 2600 105 /** BSD is a UNIX operating system derivative. @internal */ 106 #define U_PF_BSD 3000 107 /** AIX is based on UNIX System V Releases and 4.3 BSD. @internal */ 108 #define U_PF_AIX 3100 109 /** IRIX is based on UNIX System V with BSD extensions. @internal */ 110 #define U_PF_IRIX 3200 111 /** 112 * Darwin is a POSIX-compliant operating system, composed of code developed by Apple, 113 * as well as code derived from NeXTSTEP, BSD, and other projects, 114 * built around the Mach kernel. 115 * Darwin forms the core set of components upon which Mac OS X, Apple TV, and iOS are based. 116 * (Original description modified from WikiPedia.) 117 * @internal 118 */ 119 #define U_PF_DARWIN 3500 120 /** iPhone OS (iOS) is a derivative of Mac OS X. @internal */ 121 #define U_PF_IPHONE 3550 122 /** QNX is a commercial Unix-like real-time operating system related to BSD. @internal */ 123 #define U_PF_QNX 3700 124 /** Linux is a Unix-like operating system. @internal */ 125 #define U_PF_LINUX 4000 126 /** 127 * Native Client is pretty close to Linux. 128 * See https://developer.chrome.com/native-client and 129 * http://www.chromium.org/nativeclient 130 * @internal 131 */ 132 #define U_PF_BROWSER_NATIVE_CLIENT 4020 133 /** Android is based on Linux. @internal */ 134 #define U_PF_ANDROID 4050 135 /** Haiku is a POSIX-ish platform. @internal */ 136 #define U_PF_HAIKU 4080 137 /** Fuchsia is a POSIX-ish platform. @internal */ 138 #define U_PF_FUCHSIA 4100 139 /* Maximum value for Linux-based platform is 4499 */ 140 /** 141 * Emscripten is a C++ transpiler for the Web that can target asm.js or 142 * WebAssembly. It provides some POSIX-compatible wrappers and stubs and 143 * some Linux-like functionality, but is not fully compatible with 144 * either. 145 * @internal 146 */ 147 #define U_PF_EMSCRIPTEN 5010 148 /** z/OS is the successor to OS/390 which was the successor to MVS. @internal */ 149 #define U_PF_OS390 9000 150 /** "IBM i" is the current name of what used to be i5/OS and earlier OS/400. @internal */ 151 #define U_PF_OS400 9400 152 153 #ifdef U_PLATFORM 154 /* Use the predefined value. */ 155 #elif defined(__MINGW32__) 156 # define U_PLATFORM U_PF_MINGW 157 #elif defined(__CYGWIN__) 158 # define U_PLATFORM U_PF_CYGWIN 159 /* Cygwin uchar.h doesn't exist until Cygwin 3.5. */ 160 # include <cygwin/version.h> 161 #elif defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64) 162 # define U_PLATFORM U_PF_WINDOWS 163 #elif defined(__ANDROID__) 164 # define U_PLATFORM U_PF_ANDROID 165 /* Android wchar_t support depends on the API level. */ 166 # include <android/api-level.h> 167 #elif defined(__pnacl__) || defined(__native_client__) 168 # define U_PLATFORM U_PF_BROWSER_NATIVE_CLIENT 169 #elif defined(__Fuchsia__) 170 # define U_PLATFORM U_PF_FUCHSIA 171 #elif defined(linux) || defined(__linux__) || defined(__linux) 172 # define U_PLATFORM U_PF_LINUX 173 #elif defined(__APPLE__) && defined(__MACH__) 174 # include <TargetConditionals.h> 175 # if (defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE) && (defined(TARGET_OS_MACCATALYST) && !TARGET_OS_MACCATALYST) /* variant of TARGET_OS_MAC */ 176 # define U_PLATFORM U_PF_IPHONE 177 # else 178 # define U_PLATFORM U_PF_DARWIN 179 # endif 180 #elif defined(BSD) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__MirBSD__) 181 # if defined(__FreeBSD__) 182 # include <sys/endian.h> 183 # endif 184 # define U_PLATFORM U_PF_BSD 185 #elif defined(sun) || defined(__sun) 186 /* Check defined(__SVR4) || defined(__svr4__) to distinguish Solaris from SunOS? */ 187 # define U_PLATFORM U_PF_SOLARIS 188 # if defined(__GNUC__) 189 /* Solaris/GCC needs this header file to get the proper endianness. Normally, this 190 * header file is included with stddef.h but on Solairs/GCC, the GCC version of stddef.h 191 * is included which does not include this header file. 192 */ 193 # include <sys/isa_defs.h> 194 # endif 195 #elif defined(_AIX) || defined(__TOS_AIX__) 196 # define U_PLATFORM U_PF_AIX 197 #elif defined(_hpux) || defined(hpux) || defined(__hpux) 198 # define U_PLATFORM U_PF_HPUX 199 #elif defined(sgi) || defined(__sgi) 200 # define U_PLATFORM U_PF_IRIX 201 #elif defined(__QNX__) || defined(__QNXNTO__) 202 # define U_PLATFORM U_PF_QNX 203 #elif defined(__TOS_MVS__) 204 # define U_PLATFORM U_PF_OS390 205 #elif defined(__OS400__) || defined(__TOS_OS400__) 206 # define U_PLATFORM U_PF_OS400 207 #elif defined(__HAIKU__) 208 # define U_PLATFORM U_PF_HAIKU 209 #elif defined(__EMSCRIPTEN__) 210 # define U_PLATFORM U_PF_EMSCRIPTEN 211 #else 212 # define U_PLATFORM U_PF_UNKNOWN 213 #endif 214 215 /** 216 * \def U_REAL_MSVC 217 * Defined if the compiler is the real MSVC compiler (and not something like 218 * Clang setting _MSC_VER in order to compile Windows code that requires it). 219 * Otherwise undefined. 220 * @internal 221 */ 222 #if (defined(_MSC_VER) && !(defined(__clang__) && __clang__)) || defined(U_IN_DOXYGEN) 223 # define U_REAL_MSVC 224 #endif 225 226 /** 227 * \def CYGWINMSVC 228 * Defined if this is Windows with Cygwin, but using MSVC rather than gcc. 229 * Otherwise undefined. 230 * @internal 231 */ 232 /* Commented out because this is already set in mh-cygwin-msvc 233 #if U_PLATFORM == U_PF_CYGWIN && defined(_MSC_VER) 234 # define CYGWINMSVC 235 #endif 236 */ 237 #ifdef U_IN_DOXYGEN 238 # define CYGWINMSVC 239 #endif 240 241 /** 242 * \def U_PLATFORM_USES_ONLY_WIN32_API 243 * Defines whether the platform uses only the Win32 API. 244 * Set to 1 for Windows/MSVC, ClangCL and MinGW but not Cygwin. 245 * @internal 246 */ 247 #ifdef U_PLATFORM_USES_ONLY_WIN32_API 248 /* Use the predefined value. */ 249 #elif (U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_MINGW) || defined(CYGWINMSVC) 250 # define U_PLATFORM_USES_ONLY_WIN32_API 1 251 #else 252 /* Cygwin implements POSIX. */ 253 # define U_PLATFORM_USES_ONLY_WIN32_API 0 254 #endif 255 256 /** 257 * \def U_PLATFORM_HAS_WIN32_API 258 * Defines whether the Win32 API is available on the platform. 259 * Set to 1 for Windows/MSVC, ClangCL, MinGW and Cygwin. 260 * @internal 261 */ 262 #ifdef U_PLATFORM_HAS_WIN32_API 263 /* Use the predefined value. */ 264 #elif U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_CYGWIN 265 # define U_PLATFORM_HAS_WIN32_API 1 266 #else 267 # define U_PLATFORM_HAS_WIN32_API 0 268 #endif 269 270 /** 271 * \def U_PLATFORM_HAS_WINUWP_API 272 * Defines whether target is intended for Universal Windows Platform API 273 * Set to 1 for Windows10 Release Solution Configuration 274 * @internal 275 */ 276 #ifdef U_PLATFORM_HAS_WINUWP_API 277 /* Use the predefined value. */ 278 #else 279 # define U_PLATFORM_HAS_WINUWP_API 0 280 #endif 281 282 /** 283 * \def U_PLATFORM_IMPLEMENTS_POSIX 284 * Defines whether the platform implements (most of) the POSIX API. 285 * Set to 1 for Cygwin and most other platforms. 286 * @internal 287 */ 288 #ifdef U_PLATFORM_IMPLEMENTS_POSIX 289 /* Use the predefined value. */ 290 #elif U_PLATFORM_USES_ONLY_WIN32_API 291 # define U_PLATFORM_IMPLEMENTS_POSIX 0 292 #else 293 # define U_PLATFORM_IMPLEMENTS_POSIX 1 294 #endif 295 296 /** 297 * \def U_PLATFORM_IS_LINUX_BASED 298 * Defines whether the platform is Linux or one of its derivatives. 299 * @internal 300 */ 301 #ifdef U_PLATFORM_IS_LINUX_BASED 302 /* Use the predefined value. */ 303 #elif U_PF_LINUX <= U_PLATFORM && U_PLATFORM <= 4499 304 # define U_PLATFORM_IS_LINUX_BASED 1 305 #else 306 # define U_PLATFORM_IS_LINUX_BASED 0 307 #endif 308 309 /** 310 * \def U_PLATFORM_IS_DARWIN_BASED 311 * Defines whether the platform is Darwin or one of its derivatives. 312 * @internal 313 */ 314 #ifdef U_PLATFORM_IS_DARWIN_BASED 315 /* Use the predefined value. */ 316 #elif U_PF_DARWIN <= U_PLATFORM && U_PLATFORM <= U_PF_IPHONE 317 # define U_PLATFORM_IS_DARWIN_BASED 1 318 #else 319 # define U_PLATFORM_IS_DARWIN_BASED 0 320 #endif 321 322 /*===========================================================================*/ 323 /** @{ Compiler and environment features */ 324 /*===========================================================================*/ 325 326 /** 327 * \def U_GCC_MAJOR_MINOR 328 * Indicates whether the compiler is gcc (test for != 0), 329 * and if so, contains its major (times 100) and minor version numbers. 330 * If the compiler is not gcc, then U_GCC_MAJOR_MINOR == 0. 331 * 332 * For example, for testing for whether we have gcc, and whether it's 4.6 or higher, 333 * use "#if U_GCC_MAJOR_MINOR >= 406". 334 * @internal 335 */ 336 #ifdef __GNUC__ 337 # define U_GCC_MAJOR_MINOR (__GNUC__ * 100 + __GNUC_MINOR__) 338 #else 339 # define U_GCC_MAJOR_MINOR 0 340 #endif 341 342 /** 343 * \def U_IS_BIG_ENDIAN 344 * Determines the endianness of the platform. 345 * @internal 346 */ 347 #ifdef U_IS_BIG_ENDIAN 348 /* Use the predefined value. */ 349 #elif defined(BYTE_ORDER) && defined(BIG_ENDIAN) 350 # define U_IS_BIG_ENDIAN (BYTE_ORDER == BIG_ENDIAN) 351 #elif defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) 352 /* gcc */ 353 # define U_IS_BIG_ENDIAN (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) 354 #elif defined(__BIG_ENDIAN__) || defined(_BIG_ENDIAN) 355 # define U_IS_BIG_ENDIAN 1 356 #elif defined(__LITTLE_ENDIAN__) || defined(_LITTLE_ENDIAN) 357 # define U_IS_BIG_ENDIAN 0 358 #elif U_PLATFORM == U_PF_OS390 || U_PLATFORM == U_PF_OS400 || defined(__s390__) || defined(__s390x__) 359 /* These platforms do not appear to predefine any endianness macros. */ 360 # define U_IS_BIG_ENDIAN 1 361 #elif defined(_PA_RISC1_0) || defined(_PA_RISC1_1) || defined(_PA_RISC2_0) 362 /* HPPA do not appear to predefine any endianness macros. */ 363 # define U_IS_BIG_ENDIAN 1 364 #elif defined(sparc) || defined(__sparc) || defined(__sparc__) 365 /* Some sparc based systems (e.g. Linux) do not predefine any endianness macros. */ 366 # define U_IS_BIG_ENDIAN 1 367 #else 368 # define U_IS_BIG_ENDIAN 0 369 #endif 370 371 /** 372 * \def U_HAVE_PLACEMENT_NEW 373 * Determines whether to override placement new and delete for STL. 374 * @stable ICU 2.6 375 */ 376 #ifdef U_HAVE_PLACEMENT_NEW 377 /* Use the predefined value. */ 378 #elif defined(__BORLANDC__) 379 # define U_HAVE_PLACEMENT_NEW 0 380 #else 381 # define U_HAVE_PLACEMENT_NEW 1 382 #endif 383 384 /** 385 * \def U_HAVE_DEBUG_LOCATION_NEW 386 * Define this to define the MFC debug version of the operator new. 387 * 388 * @stable ICU 3.4 389 */ 390 #ifdef U_HAVE_DEBUG_LOCATION_NEW 391 /* Use the predefined value. */ 392 #elif defined(_MSC_VER) 393 # define U_HAVE_DEBUG_LOCATION_NEW 1 394 #else 395 # define U_HAVE_DEBUG_LOCATION_NEW 0 396 #endif 397 398 /* Compatibility with compilers other than clang: http://clang.llvm.org/docs/LanguageExtensions.html */ 399 #ifdef __has_attribute 400 # define UPRV_HAS_ATTRIBUTE(x) __has_attribute(x) 401 #else 402 # define UPRV_HAS_ATTRIBUTE(x) 0 403 #endif 404 #ifdef __has_cpp_attribute 405 # define UPRV_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x) 406 #else 407 # define UPRV_HAS_CPP_ATTRIBUTE(x) 0 408 #endif 409 #ifdef __has_declspec_attribute 410 # define UPRV_HAS_DECLSPEC_ATTRIBUTE(x) __has_declspec_attribute(x) 411 #else 412 # define UPRV_HAS_DECLSPEC_ATTRIBUTE(x) 0 413 #endif 414 #ifdef __has_builtin 415 # define UPRV_HAS_BUILTIN(x) __has_builtin(x) 416 #else 417 # define UPRV_HAS_BUILTIN(x) 0 418 #endif 419 #ifdef __has_feature 420 # define UPRV_HAS_FEATURE(x) __has_feature(x) 421 #else 422 # define UPRV_HAS_FEATURE(x) 0 423 #endif 424 #ifdef __has_extension 425 # define UPRV_HAS_EXTENSION(x) __has_extension(x) 426 #else 427 # define UPRV_HAS_EXTENSION(x) 0 428 #endif 429 #ifdef __has_warning 430 # define UPRV_HAS_WARNING(x) __has_warning(x) 431 #else 432 # define UPRV_HAS_WARNING(x) 0 433 #endif 434 435 436 #if defined(__clang__) 437 #define UPRV_NO_SANITIZE_UNDEFINED __attribute__((no_sanitize("undefined"))) 438 #else 439 #define UPRV_NO_SANITIZE_UNDEFINED 440 #endif 441 442 /** 443 * \def U_MALLOC_ATTR 444 * Attribute to mark functions as malloc-like 445 * @internal 446 */ 447 #if defined(__GNUC__) && __GNUC__>=3 448 # define U_MALLOC_ATTR __attribute__ ((__malloc__)) 449 #else 450 # define U_MALLOC_ATTR 451 #endif 452 453 /** 454 * \def U_ALLOC_SIZE_ATTR 455 * Attribute to specify the size of the allocated buffer for malloc-like functions 456 * @internal 457 */ 458 #if (defined(__GNUC__) && \ 459 (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))) || \ 460 UPRV_HAS_ATTRIBUTE(alloc_size) 461 # define U_ALLOC_SIZE_ATTR(X) __attribute__ ((alloc_size(X))) 462 # define U_ALLOC_SIZE_ATTR2(X,Y) __attribute__ ((alloc_size(X,Y))) 463 #else 464 # define U_ALLOC_SIZE_ATTR(X) 465 # define U_ALLOC_SIZE_ATTR2(X,Y) 466 #endif 467 468 /** 469 * \def U_CPLUSPLUS_VERSION 470 * 0 if no C++; 1, 11, 14, ... if C++. 471 * Support for specific features cannot always be determined by the C++ version alone. 472 * @internal 473 */ 474 #ifdef U_CPLUSPLUS_VERSION 475 # if U_CPLUSPLUS_VERSION != 0 && !defined(__cplusplus) 476 # undef U_CPLUSPLUS_VERSION 477 # define U_CPLUSPLUS_VERSION 0 478 # endif 479 /* Otherwise use the predefined value. */ 480 #elif !defined(__cplusplus) 481 # define U_CPLUSPLUS_VERSION 0 482 #elif __cplusplus >= 201703L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201703L) 483 # define U_CPLUSPLUS_VERSION 17 484 #elif __cplusplus >= 201402L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201402L) 485 # define U_CPLUSPLUS_VERSION 14 486 #elif __cplusplus >= 201103L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201103L) 487 # define U_CPLUSPLUS_VERSION 11 488 #else 489 // C++98 or C++03 490 # define U_CPLUSPLUS_VERSION 1 491 #endif 492 493 /** 494 * \def U_FALLTHROUGH 495 * Annotate intentional fall-through between switch labels. 496 * http://clang.llvm.org/docs/AttributeReference.html#fallthrough-clang-fallthrough 497 * @internal 498 */ 499 #ifndef __cplusplus 500 // Not for C. 501 #elif defined(U_FALLTHROUGH) 502 // Use the predefined value. 503 #elif defined(__clang__) 504 // Test for compiler vs. feature separately. 505 // Other compilers might choke on the feature test. 506 # if UPRV_HAS_CPP_ATTRIBUTE(clang::fallthrough) || \ 507 (UPRV_HAS_FEATURE(cxx_attributes) && \ 508 UPRV_HAS_WARNING("-Wimplicit-fallthrough")) 509 # define U_FALLTHROUGH [[clang::fallthrough]] 510 # endif 511 #elif defined(__GNUC__) && (__GNUC__ >= 7) 512 # define U_FALLTHROUGH __attribute__((fallthrough)) 513 #endif 514 515 #ifndef U_FALLTHROUGH 516 # define U_FALLTHROUGH 517 #endif 518 519 /** @} */ 520 521 /*===========================================================================*/ 522 /** @{ Character data types */ 523 /*===========================================================================*/ 524 525 /** 526 * U_CHARSET_FAMILY is equal to this value when the platform is an ASCII based platform. 527 * @stable ICU 2.0 528 */ 529 #define U_ASCII_FAMILY 0 530 531 /** 532 * U_CHARSET_FAMILY is equal to this value when the platform is an EBCDIC based platform. 533 * @stable ICU 2.0 534 */ 535 #define U_EBCDIC_FAMILY 1 536 537 /** 538 * \def U_CHARSET_FAMILY 539 * 540 * <p>These definitions allow to specify the encoding of text 541 * in the char data type as defined by the platform and the compiler. 542 * It is enough to determine the code point values of "invariant characters", 543 * which are the ones shared by all encodings that are in use 544 * on a given platform.</p> 545 * 546 * <p>Those "invariant characters" should be all the uppercase and lowercase 547 * latin letters, the digits, the space, and "basic punctuation". 548 * Also, '\\n', '\\r', '\\t' should be available.</p> 549 * 550 * <p>The list of "invariant characters" is:<br> 551 * \code 552 * A-Z a-z 0-9 SPACE " % & ' ( ) * + , - . / : ; < = > ? _ 553 * \endcode 554 * <br> 555 * (52 letters + 10 numbers + 20 punc/sym/space = 82 total)</p> 556 * 557 * <p>This matches the IBM Syntactic Character Set (CS 640).</p> 558 * 559 * <p>In other words, all the graphic characters in 7-bit ASCII should 560 * be safely accessible except the following:</p> 561 * 562 * \code 563 * '\' <backslash> 564 * '[' <left bracket> 565 * ']' <right bracket> 566 * '{' <left brace> 567 * '}' <right brace> 568 * '^' <circumflex> 569 * '~' <tilde> 570 * '!' <exclamation mark> 571 * '#' <number sign> 572 * '|' <vertical line> 573 * '$' <dollar sign> 574 * '@' <commercial at> 575 * '`' <grave accent> 576 * \endcode 577 * @stable ICU 2.0 578 */ 579 #ifdef U_CHARSET_FAMILY 580 /* Use the predefined value. */ 581 #elif U_PLATFORM == U_PF_OS390 && (!defined(__CHARSET_LIB) || !__CHARSET_LIB) 582 # define U_CHARSET_FAMILY U_EBCDIC_FAMILY 583 #elif U_PLATFORM == U_PF_OS400 && !defined(__UTF32__) 584 # define U_CHARSET_FAMILY U_EBCDIC_FAMILY 585 #else 586 # define U_CHARSET_FAMILY U_ASCII_FAMILY 587 #endif 588 589 /** 590 * \def U_CHARSET_IS_UTF8 591 * 592 * Hardcode the default charset to UTF-8. 593 * 594 * If this is set to 1, then 595 * - ICU will assume that all non-invariant char*, StringPiece, std::string etc. 596 * contain UTF-8 text, regardless of what the system API uses 597 * - some ICU code will use fast functions like u_strFromUTF8() 598 * rather than the more general and more heavy-weight conversion API (ucnv.h) 599 * - ucnv_getDefaultName() always returns "UTF-8" 600 * - ucnv_setDefaultName() is disabled and will not change the default charset 601 * - static builds of ICU are smaller 602 * - more functionality is available with the UCONFIG_NO_CONVERSION build-time 603 * configuration option (see unicode/uconfig.h) 604 * - the UCONFIG_NO_CONVERSION build option in uconfig.h is more usable 605 * 606 * @stable ICU 4.2 607 * @see UCONFIG_NO_CONVERSION 608 */ 609 #ifdef U_CHARSET_IS_UTF8 610 /* Use the predefined value. */ 611 #elif U_PLATFORM_IS_LINUX_BASED || U_PLATFORM_IS_DARWIN_BASED || \ 612 U_PLATFORM == U_PF_EMSCRIPTEN 613 # define U_CHARSET_IS_UTF8 1 614 #else 615 # define U_CHARSET_IS_UTF8 0 616 #endif 617 618 /** @} */ 619 620 /*===========================================================================*/ 621 /** @{ Information about wchar support */ 622 /*===========================================================================*/ 623 624 /** 625 * \def U_HAVE_WCHAR_H 626 * Indicates whether <wchar.h> is available (1) or not (0). Set to 1 by default. 627 * 628 * @stable ICU 2.0 629 */ 630 #ifdef U_HAVE_WCHAR_H 631 /* Use the predefined value. */ 632 #elif U_PLATFORM == U_PF_ANDROID && __ANDROID_API__ < 9 633 /* 634 * Android before Gingerbread (Android 2.3, API level 9) did not support wchar_t. 635 * The type and header existed, but the library functions did not work as expected. 636 * The size of wchar_t was 1 but L"xyz" string literals had 32-bit units anyway. 637 */ 638 # define U_HAVE_WCHAR_H 0 639 #else 640 # define U_HAVE_WCHAR_H 1 641 #endif 642 643 /** 644 * \def U_SIZEOF_WCHAR_T 645 * U_SIZEOF_WCHAR_T==sizeof(wchar_t) 646 * 647 * @stable ICU 2.0 648 */ 649 #ifdef U_SIZEOF_WCHAR_T 650 /* Use the predefined value. */ 651 #elif (U_PLATFORM == U_PF_ANDROID && __ANDROID_API__ < 9) 652 /* 653 * Classic Mac OS and Mac OS X before 10.3 (Panther) did not support wchar_t or wstring. 654 * Newer Mac OS X has size 4. 655 */ 656 # define U_SIZEOF_WCHAR_T 1 657 #elif U_PLATFORM_HAS_WIN32_API || U_PLATFORM == U_PF_CYGWIN 658 # define U_SIZEOF_WCHAR_T 2 659 #elif U_PLATFORM == U_PF_AIX 660 /* 661 * AIX 6.1 information, section "Wide character data representation": 662 * "... the wchar_t datatype is 32-bit in the 64-bit environment and 663 * 16-bit in the 32-bit environment." 664 * and 665 * "All locales use Unicode for their wide character code values (process code), 666 * except the IBM-eucTW codeset." 667 */ 668 # ifdef __64BIT__ 669 # define U_SIZEOF_WCHAR_T 4 670 # else 671 # define U_SIZEOF_WCHAR_T 2 672 # endif 673 #elif U_PLATFORM == U_PF_OS390 674 /* 675 * z/OS V1R11 information center, section "LP64 | ILP32": 676 * "In 31-bit mode, the size of long and pointers is 4 bytes and the size of wchar_t is 2 bytes. 677 * Under LP64, the size of long and pointer is 8 bytes and the size of wchar_t is 4 bytes." 678 */ 679 # ifdef _LP64 680 # define U_SIZEOF_WCHAR_T 4 681 # else 682 # define U_SIZEOF_WCHAR_T 2 683 # endif 684 #elif U_PLATFORM == U_PF_OS400 685 # if defined(__UTF32__) 686 /* 687 * LOCALETYPE(*LOCALEUTF) is specified. 688 * Wide-character strings are in UTF-32, 689 * narrow-character strings are in UTF-8. 690 */ 691 # define U_SIZEOF_WCHAR_T 4 692 # elif defined(__UCS2__) 693 /* 694 * LOCALETYPE(*LOCALEUCS2) is specified. 695 * Wide-character strings are in UCS-2, 696 * narrow-character strings are in EBCDIC. 697 */ 698 # define U_SIZEOF_WCHAR_T 2 699 # else 700 /* 701 * LOCALETYPE(*CLD) or LOCALETYPE(*LOCALE) is specified. 702 * Wide-character strings are in 16-bit EBCDIC, 703 * narrow-character strings are in EBCDIC. 704 */ 705 # define U_SIZEOF_WCHAR_T 2 706 # endif 707 #else 708 # define U_SIZEOF_WCHAR_T 4 709 #endif 710 711 #ifndef U_HAVE_WCSCPY 712 #define U_HAVE_WCSCPY U_HAVE_WCHAR_H 713 #endif 714 715 /** @} */ 716 717 /** 718 * \def U_HAVE_CHAR16_T 719 * Defines whether the char16_t type is available for UTF-16 720 * and u"abc" UTF-16 string literals are supported. 721 * This is a new standard type and standard string literal syntax in C++11 722 * but has been available in some compilers before. 723 * @internal 724 */ 725 #ifdef U_HAVE_CHAR16_T 726 /* Use the predefined value. */ 727 #else 728 /* 729 * Notes: 730 * C++11 and C11 require support for UTF-16 literals 731 * Doesn't work on Mac C11 (see workaround in ptypes.h) 732 * or Cygwin less than 3.5. 733 */ 734 # if defined(__cplusplus) 735 # define U_HAVE_CHAR16_T 1 736 # elif U_PLATFORM_IS_DARWIN_BASED || (U_PLATFORM == U_PF_CYGWIN && CYGWIN_VERSION_DLL_MAJOR < 3005) 737 # define U_HAVE_CHAR16_T 0 738 # else 739 // conformant C11 740 # define U_HAVE_CHAR16_T 1 741 # endif 742 #endif 743 744 /** 745 * @{ 746 * \def U_DECLARE_UTF16 747 * Do not use this macro because it is not defined on all platforms. 748 * In C++, use std::u16string_view literals, see the UNICODE_STRING docs. 749 * In C, use u"UTF-16 literals". 750 * See also the public U_STRING_DECL macro. 751 * @internal 752 */ 753 #ifdef U_DECLARE_UTF16 754 /* Use the predefined value. */ 755 #elif U_HAVE_CHAR16_T \ 756 || (defined(__xlC__) && defined(__IBM_UTF_LITERAL) && U_SIZEOF_WCHAR_T != 2) \ 757 || (defined(__HP_aCC) && __HP_aCC >= 035000) \ 758 || (defined(__HP_cc) && __HP_cc >= 111106) \ 759 || (defined(U_IN_DOXYGEN)) 760 # define U_DECLARE_UTF16(string) u ## string 761 #elif U_SIZEOF_WCHAR_T == 2 \ 762 && (U_CHARSET_FAMILY == 0 || (U_PF_OS390 <= U_PLATFORM && U_PLATFORM <= U_PF_OS400 && defined(__UCS2__))) 763 # define U_DECLARE_UTF16(string) L ## string 764 #else 765 /* Leave U_DECLARE_UTF16 undefined. See unistr.h. */ 766 #endif 767 768 /** @} */ 769 770 /*===========================================================================*/ 771 /** @{ Symbol import-export control */ 772 /*===========================================================================*/ 773 774 #ifdef U_EXPORT 775 /* Use the predefined value. */ 776 #elif defined(U_STATIC_IMPLEMENTATION) 777 # define U_EXPORT 778 #elif defined(_MSC_VER) || (UPRV_HAS_DECLSPEC_ATTRIBUTE(__dllexport__) && \ 779 UPRV_HAS_DECLSPEC_ATTRIBUTE(__dllimport__)) 780 # define U_EXPORT __declspec(dllexport) 781 #elif defined(__GNUC__) || defined(__open_xl__) 782 # define U_EXPORT __attribute__((visibility("default"))) 783 #elif (defined(__SUNPRO_CC) && __SUNPRO_CC >= 0x550) \ 784 || (defined(__SUNPRO_C) && __SUNPRO_C >= 0x550) 785 # define U_EXPORT __global 786 /*#elif defined(__HP_aCC) || defined(__HP_cc) 787 # define U_EXPORT __declspec(dllexport)*/ 788 #else 789 # define U_EXPORT 790 #endif 791 792 /* U_CALLCONV is related to U_EXPORT2 */ 793 #ifdef U_EXPORT2 794 /* Use the predefined value. */ 795 #elif defined(_MSC_VER) 796 # define U_EXPORT2 __cdecl 797 #else 798 # define U_EXPORT2 799 #endif 800 801 #ifdef U_IMPORT 802 /* Use the predefined value. */ 803 #elif defined(_MSC_VER) || (UPRV_HAS_DECLSPEC_ATTRIBUTE(__dllexport__) && \ 804 UPRV_HAS_DECLSPEC_ATTRIBUTE(__dllimport__)) 805 /* Windows needs to export/import data. */ 806 # define U_IMPORT __declspec(dllimport) 807 #else 808 # define U_IMPORT 809 #endif 810 811 /** 812 * \def U_HIDDEN 813 * This is used to mark internal structs declared within external classes, 814 * to prevent the internal structs from having the same visibility as the 815 * class within which they are declared. 816 * @internal 817 */ 818 #ifdef U_HIDDEN 819 /* Use the predefined value. */ 820 #elif defined(__GNUC__) || defined(__open_xl__) 821 # define U_HIDDEN __attribute__((visibility("hidden"))) 822 #else 823 # define U_HIDDEN 824 #endif 825 826 /** 827 * \def U_CALLCONV 828 * Similar to U_CDECL_BEGIN/U_CDECL_END, this qualifier is necessary 829 * in callback function typedefs to make sure that the calling convention 830 * is compatible. 831 * 832 * This is only used for non-ICU-API functions. 833 * When a function is a public ICU API, 834 * you must use the U_CAPI and U_EXPORT2 qualifiers. 835 * 836 * Please note, you need to use U_CALLCONV after the *. 837 * 838 * NO : "static const char U_CALLCONV *func( . . . )" 839 * YES: "static const char* U_CALLCONV func( . . . )" 840 * 841 * @stable ICU 2.0 842 */ 843 #if U_PLATFORM == U_PF_OS390 && defined(__cplusplus) 844 # define U_CALLCONV __cdecl 845 #else 846 # define U_CALLCONV U_EXPORT2 847 #endif 848 849 /** 850 * \def U_CALLCONV_FPTR 851 * Similar to U_CALLCONV, but only used on function pointers. 852 * @internal 853 */ 854 #if U_PLATFORM == U_PF_OS390 && defined(__cplusplus) 855 # define U_CALLCONV_FPTR U_CALLCONV 856 #else 857 # define U_CALLCONV_FPTR 858 #endif 859 /** @} */ 860 861 #endif // _PLATFORM_H 862