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 <code>#define</code> 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 /** Fuchsia is a POSIX-ish platform. @internal */ 136 #define U_PF_FUCHSIA 4100 137 /* Maximum value for Linux-based platform is 4499 */ 138 /** z/OS is the successor to OS/390 which was the successor to MVS. @internal */ 139 #define U_PF_OS390 9000 140 /** "IBM i" is the current name of what used to be i5/OS and earlier OS/400. @internal */ 141 #define U_PF_OS400 9400 142 143 #ifdef U_PLATFORM 144 /* Use the predefined value. */ 145 #elif defined(__MINGW32__) 146 # define U_PLATFORM U_PF_MINGW 147 #elif defined(__CYGWIN__) 148 # define U_PLATFORM U_PF_CYGWIN 149 #elif defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64) 150 # define U_PLATFORM U_PF_WINDOWS 151 #elif defined(__ANDROID__) 152 # define U_PLATFORM U_PF_ANDROID 153 /* Android wchar_t support depends on the API level. */ 154 # include <android/api-level.h> 155 #elif defined(__pnacl__) || defined(__native_client__) 156 # define U_PLATFORM U_PF_BROWSER_NATIVE_CLIENT 157 #elif defined(__Fuchsia__) 158 # define U_PLATFORM U_PF_FUCHSIA 159 #elif defined(linux) || defined(__linux__) || defined(__linux) 160 # define U_PLATFORM U_PF_LINUX 161 #elif defined(__APPLE__) && defined(__MACH__) 162 # include <TargetConditionals.h> 163 # if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE /* variant of TARGET_OS_MAC */ 164 # define U_PLATFORM U_PF_IPHONE 165 # else 166 # define U_PLATFORM U_PF_DARWIN 167 # endif 168 #elif defined(BSD) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__MirBSD__) 169 # if defined(__FreeBSD__) 170 # include <sys/endian.h> 171 # endif 172 # define U_PLATFORM U_PF_BSD 173 #elif defined(sun) || defined(__sun) 174 /* Check defined(__SVR4) || defined(__svr4__) to distinguish Solaris from SunOS? */ 175 # define U_PLATFORM U_PF_SOLARIS 176 # if defined(__GNUC__) 177 /* Solaris/GCC needs this header file to get the proper endianness. Normally, this 178 * header file is included with stddef.h but on Solairs/GCC, the GCC version of stddef.h 179 * is included which does not include this header file. 180 */ 181 # include <sys/isa_defs.h> 182 # endif 183 #elif defined(_AIX) || defined(__TOS_AIX__) 184 # define U_PLATFORM U_PF_AIX 185 #elif defined(_hpux) || defined(hpux) || defined(__hpux) 186 # define U_PLATFORM U_PF_HPUX 187 #elif defined(sgi) || defined(__sgi) 188 # define U_PLATFORM U_PF_IRIX 189 #elif defined(__QNX__) || defined(__QNXNTO__) 190 # define U_PLATFORM U_PF_QNX 191 #elif defined(__TOS_MVS__) 192 # define U_PLATFORM U_PF_OS390 193 #elif defined(__OS400__) || defined(__TOS_OS400__) 194 # define U_PLATFORM U_PF_OS400 195 #else 196 # define U_PLATFORM U_PF_UNKNOWN 197 #endif 198 199 /** 200 * \def UPRV_INCOMPLETE_CPP11_SUPPORT 201 * This switch turns off ICU 60 NumberFormatter code. 202 * By default, this switch is enabled on AIX and z/OS, 203 * which have poor C++11 support. 204 * 205 * NOTE: This switch is intended to be temporary; see #13393. 206 * 207 * @internal 208 */ 209 #ifndef UPRV_INCOMPLETE_CPP11_SUPPORT 210 # define UPRV_INCOMPLETE_CPP11_SUPPORT (U_PLATFORM == U_PF_AIX || U_PLATFORM == U_PF_OS390 || U_PLATFORM == U_PF_SOLARIS ) 211 #endif 212 213 /** 214 * \def CYGWINMSVC 215 * Defined if this is Windows with Cygwin, but using MSVC rather than gcc. 216 * Otherwise undefined. 217 * @internal 218 */ 219 /* Commented out because this is already set in mh-cygwin-msvc 220 #if U_PLATFORM == U_PF_CYGWIN && defined(_MSC_VER) 221 # define CYGWINMSVC 222 #endif 223 */ 224 225 /** 226 * \def U_PLATFORM_USES_ONLY_WIN32_API 227 * Defines whether the platform uses only the Win32 API. 228 * Set to 1 for Windows/MSVC and MinGW but not Cygwin. 229 * @internal 230 */ 231 #ifdef U_PLATFORM_USES_ONLY_WIN32_API 232 /* Use the predefined value. */ 233 #elif (U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_MINGW) || defined(CYGWINMSVC) 234 # define U_PLATFORM_USES_ONLY_WIN32_API 1 235 #else 236 /* Cygwin implements POSIX. */ 237 # define U_PLATFORM_USES_ONLY_WIN32_API 0 238 #endif 239 240 /** 241 * \def U_PLATFORM_HAS_WIN32_API 242 * Defines whether the Win32 API is available on the platform. 243 * Set to 1 for Windows/MSVC, MinGW and Cygwin. 244 * @internal 245 */ 246 #ifdef U_PLATFORM_HAS_WIN32_API 247 /* Use the predefined value. */ 248 #elif U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_CYGWIN 249 # define U_PLATFORM_HAS_WIN32_API 1 250 #else 251 # define U_PLATFORM_HAS_WIN32_API 0 252 #endif 253 254 /** 255 * \def U_PLATFORM_HAS_WINUWP_API 256 * Defines whether target is intended for Universal Windows Platform API 257 * Set to 1 for Windows10 Release Solution Configuration 258 * @internal 259 */ 260 #ifdef U_PLATFORM_HAS_WINUWP_API 261 /* Use the predefined value. */ 262 #else 263 # define U_PLATFORM_HAS_WINUWP_API 0 264 #endif 265 266 /** 267 * \def U_PLATFORM_IMPLEMENTS_POSIX 268 * Defines whether the platform implements (most of) the POSIX API. 269 * Set to 1 for Cygwin and most other platforms. 270 * @internal 271 */ 272 #ifdef U_PLATFORM_IMPLEMENTS_POSIX 273 /* Use the predefined value. */ 274 #elif U_PLATFORM_USES_ONLY_WIN32_API 275 # define U_PLATFORM_IMPLEMENTS_POSIX 0 276 #else 277 # define U_PLATFORM_IMPLEMENTS_POSIX 1 278 #endif 279 280 /** 281 * \def U_PLATFORM_IS_LINUX_BASED 282 * Defines whether the platform is Linux or one of its derivatives. 283 * @internal 284 */ 285 #ifdef U_PLATFORM_IS_LINUX_BASED 286 /* Use the predefined value. */ 287 #elif U_PF_LINUX <= U_PLATFORM && U_PLATFORM <= 4499 288 # define U_PLATFORM_IS_LINUX_BASED 1 289 #else 290 # define U_PLATFORM_IS_LINUX_BASED 0 291 #endif 292 293 /** 294 * \def U_PLATFORM_IS_DARWIN_BASED 295 * Defines whether the platform is Darwin or one of its derivatives. 296 * @internal 297 */ 298 #ifdef U_PLATFORM_IS_DARWIN_BASED 299 /* Use the predefined value. */ 300 #elif U_PF_DARWIN <= U_PLATFORM && U_PLATFORM <= U_PF_IPHONE 301 # define U_PLATFORM_IS_DARWIN_BASED 1 302 #else 303 # define U_PLATFORM_IS_DARWIN_BASED 0 304 #endif 305 306 /** 307 * \def U_HAVE_STDINT_H 308 * Defines whether stdint.h is available. It is a C99 standard header. 309 * We used to include inttypes.h which includes stdint.h but we usually do not need 310 * the additional definitions from inttypes.h. 311 * @internal 312 */ 313 #ifdef U_HAVE_STDINT_H 314 /* Use the predefined value. */ 315 #elif U_PLATFORM_USES_ONLY_WIN32_API 316 # if defined(__BORLANDC__) || U_PLATFORM == U_PF_MINGW || (defined(_MSC_VER) && _MSC_VER>=1600) 317 /* Windows Visual Studio 9 and below do not have stdint.h & inttypes.h, but VS 2010 adds them. */ 318 # define U_HAVE_STDINT_H 1 319 # else 320 # define U_HAVE_STDINT_H 0 321 # endif 322 #elif U_PLATFORM == U_PF_SOLARIS 323 /* Solaris has inttypes.h but not stdint.h. */ 324 # define U_HAVE_STDINT_H 0 325 #elif U_PLATFORM == U_PF_AIX && !defined(_AIX51) && defined(_POWER) 326 /* PPC AIX <= 4.3 has inttypes.h but not stdint.h. */ 327 # define U_HAVE_STDINT_H 0 328 #else 329 # define U_HAVE_STDINT_H 1 330 #endif 331 332 /** 333 * \def U_HAVE_INTTYPES_H 334 * Defines whether inttypes.h is available. It is a C99 standard header. 335 * We include inttypes.h where it is available but stdint.h is not. 336 * @internal 337 */ 338 #ifdef U_HAVE_INTTYPES_H 339 /* Use the predefined value. */ 340 #elif U_PLATFORM == U_PF_SOLARIS 341 /* Solaris has inttypes.h but not stdint.h. */ 342 # define U_HAVE_INTTYPES_H 1 343 #elif U_PLATFORM == U_PF_AIX && !defined(_AIX51) && defined(_POWER) 344 /* PPC AIX <= 4.3 has inttypes.h but not stdint.h. */ 345 # define U_HAVE_INTTYPES_H 1 346 #else 347 /* Most platforms have both inttypes.h and stdint.h, or neither. */ 348 # define U_HAVE_INTTYPES_H U_HAVE_STDINT_H 349 #endif 350 351 /*===========================================================================*/ 352 /** @{ Compiler and environment features */ 353 /*===========================================================================*/ 354 355 /** 356 * \def U_GCC_MAJOR_MINOR 357 * Indicates whether the compiler is gcc (test for != 0), 358 * and if so, contains its major (times 100) and minor version numbers. 359 * If the compiler is not gcc, then U_GCC_MAJOR_MINOR == 0. 360 * 361 * For example, for testing for whether we have gcc, and whether it's 4.6 or higher, 362 * use "#if U_GCC_MAJOR_MINOR >= 406". 363 * @internal 364 */ 365 #ifdef __GNUC__ 366 # define U_GCC_MAJOR_MINOR (__GNUC__ * 100 + __GNUC_MINOR__) 367 #else 368 # define U_GCC_MAJOR_MINOR 0 369 #endif 370 371 /** 372 * \def U_IS_BIG_ENDIAN 373 * Determines the endianness of the platform. 374 * @internal 375 */ 376 #ifdef U_IS_BIG_ENDIAN 377 /* Use the predefined value. */ 378 #elif defined(BYTE_ORDER) && defined(BIG_ENDIAN) 379 # define U_IS_BIG_ENDIAN (BYTE_ORDER == BIG_ENDIAN) 380 #elif defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) 381 /* gcc */ 382 # define U_IS_BIG_ENDIAN (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) 383 #elif defined(__BIG_ENDIAN__) || defined(_BIG_ENDIAN) 384 # define U_IS_BIG_ENDIAN 1 385 #elif defined(__LITTLE_ENDIAN__) || defined(_LITTLE_ENDIAN) 386 # define U_IS_BIG_ENDIAN 0 387 #elif U_PLATFORM == U_PF_OS390 || U_PLATFORM == U_PF_OS400 || defined(__s390__) || defined(__s390x__) 388 /* These platforms do not appear to predefine any endianness macros. */ 389 # define U_IS_BIG_ENDIAN 1 390 #elif defined(_PA_RISC1_0) || defined(_PA_RISC1_1) || defined(_PA_RISC2_0) 391 /* HPPA do not appear to predefine any endianness macros. */ 392 # define U_IS_BIG_ENDIAN 1 393 #elif defined(sparc) || defined(__sparc) || defined(__sparc__) 394 /* Some sparc based systems (e.g. Linux) do not predefine any endianness macros. */ 395 # define U_IS_BIG_ENDIAN 1 396 #else 397 # define U_IS_BIG_ENDIAN 0 398 #endif 399 400 /** 401 * \def U_HAVE_PLACEMENT_NEW 402 * Determines whether to override placement new and delete for STL. 403 * @stable ICU 2.6 404 */ 405 #ifdef U_HAVE_PLACEMENT_NEW 406 /* Use the predefined value. */ 407 #elif defined(__BORLANDC__) 408 # define U_HAVE_PLACEMENT_NEW 0 409 #else 410 # define U_HAVE_PLACEMENT_NEW 1 411 #endif 412 413 /** 414 * \def U_HAVE_DEBUG_LOCATION_NEW 415 * Define this to define the MFC debug version of the operator new. 416 * 417 * @stable ICU 3.4 418 */ 419 #ifdef U_HAVE_DEBUG_LOCATION_NEW 420 /* Use the predefined value. */ 421 #elif defined(_MSC_VER) 422 # define U_HAVE_DEBUG_LOCATION_NEW 1 423 #else 424 # define U_HAVE_DEBUG_LOCATION_NEW 0 425 #endif 426 427 /* Compatibility with compilers other than clang: http://clang.llvm.org/docs/LanguageExtensions.html */ 428 #ifndef __has_attribute 429 # define __has_attribute(x) 0 430 #endif 431 #ifndef __has_cpp_attribute 432 # define __has_cpp_attribute(x) 0 433 #endif 434 #ifndef __has_builtin 435 # define __has_builtin(x) 0 436 #endif 437 #ifndef __has_feature 438 # define __has_feature(x) 0 439 #endif 440 #ifndef __has_extension 441 # define __has_extension(x) 0 442 #endif 443 #ifndef __has_warning 444 # define __has_warning(x) 0 445 #endif 446 447 /** 448 * \def U_MALLOC_ATTR 449 * Attribute to mark functions as malloc-like 450 * @internal 451 */ 452 #if defined(__GNUC__) && __GNUC__>=3 453 # define U_MALLOC_ATTR __attribute__ ((__malloc__)) 454 #else 455 # define U_MALLOC_ATTR 456 #endif 457 458 /** 459 * \def U_ALLOC_SIZE_ATTR 460 * Attribute to specify the size of the allocated buffer for malloc-like functions 461 * @internal 462 */ 463 #if (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))) || __has_attribute(alloc_size) 464 # define U_ALLOC_SIZE_ATTR(X) __attribute__ ((alloc_size(X))) 465 # define U_ALLOC_SIZE_ATTR2(X,Y) __attribute__ ((alloc_size(X,Y))) 466 #else 467 # define U_ALLOC_SIZE_ATTR(X) 468 # define U_ALLOC_SIZE_ATTR2(X,Y) 469 #endif 470 471 /** 472 * \def U_CPLUSPLUS_VERSION 473 * 0 if no C++; 1, 11, 14, ... if C++. 474 * Support for specific features cannot always be determined by the C++ version alone. 475 * @internal 476 */ 477 #ifdef U_CPLUSPLUS_VERSION 478 # if U_CPLUSPLUS_VERSION != 0 && !defined(__cplusplus) 479 # undef U_CPLUSPLUS_VERSION 480 # define U_CPLUSPLUS_VERSION 0 481 # endif 482 /* Otherwise use the predefined value. */ 483 #elif !defined(__cplusplus) 484 # define U_CPLUSPLUS_VERSION 0 485 #elif __cplusplus >= 201402L 486 # define U_CPLUSPLUS_VERSION 14 487 #elif __cplusplus >= 201103L 488 # define U_CPLUSPLUS_VERSION 11 489 #else 490 // C++98 or C++03 491 # define U_CPLUSPLUS_VERSION 1 492 #endif 493 494 #if (U_PLATFORM == U_PF_AIX || U_PLATFORM == U_PF_OS390) && defined(__cplusplus) &&(U_CPLUSPLUS_VERSION < 11) 495 // add in std::nullptr_t 496 namespace std { 497 typedef decltype(nullptr) nullptr_t; 498 }; 499 #endif 500 501 /** 502 * \def U_NOEXCEPT 503 * "noexcept" if supported, otherwise empty. 504 * Some code, especially STL containers, uses move semantics of objects only 505 * if the move constructor and the move operator are declared as not throwing exceptions. 506 * @internal 507 */ 508 #ifdef U_NOEXCEPT 509 /* Use the predefined value. */ 510 #elif defined(_HAS_EXCEPTIONS) && !_HAS_EXCEPTIONS /* Visual Studio */ 511 # define U_NOEXCEPT 512 #elif U_CPLUSPLUS_VERSION >= 11 || __has_feature(cxx_noexcept) || __has_extension(cxx_noexcept) \ 513 || (defined(_MSC_VER) && _MSC_VER >= 1900) /* Visual Studio 2015 */ 514 # define U_NOEXCEPT noexcept 515 #else 516 # define U_NOEXCEPT 517 #endif 518 519 /** 520 * \def U_FALLTHROUGH 521 * Annotate intentional fall-through between switch labels. 522 * http://clang.llvm.org/docs/AttributeReference.html#fallthrough-clang-fallthrough 523 * @internal 524 */ 525 #ifndef __cplusplus 526 // Not for C. 527 #elif defined(U_FALLTHROUGH) 528 // Use the predefined value. 529 #elif defined(__clang__) 530 // Test for compiler vs. feature separately. 531 // Other compilers might choke on the feature test. 532 # if __has_cpp_attribute(clang::fallthrough) || \ 533 (__has_feature(cxx_attributes) && __has_warning("-Wimplicit-fallthrough")) 534 # define U_FALLTHROUGH [[clang::fallthrough]] 535 # endif 536 #endif 537 538 #ifndef U_FALLTHROUGH 539 # define U_FALLTHROUGH 540 #endif 541 542 /** @} */ 543 544 /*===========================================================================*/ 545 /** @{ Character data types */ 546 /*===========================================================================*/ 547 548 /** 549 * U_CHARSET_FAMILY is equal to this value when the platform is an ASCII based platform. 550 * @stable ICU 2.0 551 */ 552 #define U_ASCII_FAMILY 0 553 554 /** 555 * U_CHARSET_FAMILY is equal to this value when the platform is an EBCDIC based platform. 556 * @stable ICU 2.0 557 */ 558 #define U_EBCDIC_FAMILY 1 559 560 /** 561 * \def U_CHARSET_FAMILY 562 * 563 * <p>These definitions allow to specify the encoding of text 564 * in the char data type as defined by the platform and the compiler. 565 * It is enough to determine the code point values of "invariant characters", 566 * which are the ones shared by all encodings that are in use 567 * on a given platform.</p> 568 * 569 * <p>Those "invariant characters" should be all the uppercase and lowercase 570 * latin letters, the digits, the space, and "basic punctuation". 571 * Also, '\\n', '\\r', '\\t' should be available.</p> 572 * 573 * <p>The list of "invariant characters" is:<br> 574 * \code 575 * A-Z a-z 0-9 SPACE " % & ' ( ) * + , - . / : ; < = > ? _ 576 * \endcode 577 * <br> 578 * (52 letters + 10 numbers + 20 punc/sym/space = 82 total)</p> 579 * 580 * <p>This matches the IBM Syntactic Character Set (CS 640).</p> 581 * 582 * <p>In other words, all the graphic characters in 7-bit ASCII should 583 * be safely accessible except the following:</p> 584 * 585 * \code 586 * '\' <backslash> 587 * '[' <left bracket> 588 * ']' <right bracket> 589 * '{' <left brace> 590 * '}' <right brace> 591 * '^' <circumflex> 592 * '~' <tilde> 593 * '!' <exclamation mark> 594 * '#' <number sign> 595 * '|' <vertical line> 596 * '$' <dollar sign> 597 * '@' <commercial at> 598 * '`' <grave accent> 599 * \endcode 600 * @stable ICU 2.0 601 */ 602 #ifdef U_CHARSET_FAMILY 603 /* Use the predefined value. */ 604 #elif U_PLATFORM == U_PF_OS390 && (!defined(__CHARSET_LIB) || !__CHARSET_LIB) 605 # define U_CHARSET_FAMILY U_EBCDIC_FAMILY 606 #elif U_PLATFORM == U_PF_OS400 && !defined(__UTF32__) 607 # define U_CHARSET_FAMILY U_EBCDIC_FAMILY 608 #else 609 # define U_CHARSET_FAMILY U_ASCII_FAMILY 610 #endif 611 612 /** 613 * \def U_CHARSET_IS_UTF8 614 * 615 * Hardcode the default charset to UTF-8. 616 * 617 * If this is set to 1, then 618 * - ICU will assume that all non-invariant char*, StringPiece, std::string etc. 619 * contain UTF-8 text, regardless of what the system API uses 620 * - some ICU code will use fast functions like u_strFromUTF8() 621 * rather than the more general and more heavy-weight conversion API (ucnv.h) 622 * - ucnv_getDefaultName() always returns "UTF-8" 623 * - ucnv_setDefaultName() is disabled and will not change the default charset 624 * - static builds of ICU are smaller 625 * - more functionality is available with the UCONFIG_NO_CONVERSION build-time 626 * configuration option (see unicode/uconfig.h) 627 * - the UCONFIG_NO_CONVERSION build option in uconfig.h is more usable 628 * 629 * @stable ICU 4.2 630 * @see UCONFIG_NO_CONVERSION 631 */ 632 #ifdef U_CHARSET_IS_UTF8 633 /* Use the predefined value. */ 634 #elif U_PLATFORM == U_PF_ANDROID || U_PLATFORM_IS_DARWIN_BASED 635 # define U_CHARSET_IS_UTF8 1 636 #elif U_PLATFORM_IS_LINUX_BASED 637 /* 638 * Google-specific: Set to 1 to match the google3 execution environment's 639 * use of UTF-8, on both Linux server and workstation machines. 640 */ 641 # define U_CHARSET_IS_UTF8 1 642 #else 643 # define U_CHARSET_IS_UTF8 0 644 #endif 645 646 /** @} */ 647 648 /*===========================================================================*/ 649 /** @{ Information about wchar support */ 650 /*===========================================================================*/ 651 652 /** 653 * \def U_HAVE_WCHAR_H 654 * Indicates whether <wchar.h> is available (1) or not (0). Set to 1 by default. 655 * 656 * @stable ICU 2.0 657 */ 658 #ifdef U_HAVE_WCHAR_H 659 /* Use the predefined value. */ 660 #elif U_PLATFORM == U_PF_ANDROID && __ANDROID_API__ < 9 661 /* 662 * Android before Gingerbread (Android 2.3, API level 9) did not support wchar_t. 663 * The type and header existed, but the library functions did not work as expected. 664 * The size of wchar_t was 1 but L"xyz" string literals had 32-bit units anyway. 665 */ 666 # define U_HAVE_WCHAR_H 0 667 #else 668 # define U_HAVE_WCHAR_H 1 669 #endif 670 671 /** 672 * \def U_SIZEOF_WCHAR_T 673 * U_SIZEOF_WCHAR_T==sizeof(wchar_t) 674 * 675 * @stable ICU 2.0 676 */ 677 #ifdef U_SIZEOF_WCHAR_T 678 /* Use the predefined value. */ 679 #elif (U_PLATFORM == U_PF_ANDROID && __ANDROID_API__ < 9) 680 /* 681 * Classic Mac OS and Mac OS X before 10.3 (Panther) did not support wchar_t or wstring. 682 * Newer Mac OS X has size 4. 683 */ 684 # define U_SIZEOF_WCHAR_T 1 685 #elif U_PLATFORM_HAS_WIN32_API || U_PLATFORM == U_PF_CYGWIN 686 # define U_SIZEOF_WCHAR_T 2 687 #elif U_PLATFORM == U_PF_AIX 688 /* 689 * AIX 6.1 information, section "Wide character data representation": 690 * "... the wchar_t datatype is 32-bit in the 64-bit environment and 691 * 16-bit in the 32-bit environment." 692 * and 693 * "All locales use Unicode for their wide character code values (process code), 694 * except the IBM-eucTW codeset." 695 */ 696 # ifdef __64BIT__ 697 # define U_SIZEOF_WCHAR_T 4 698 # else 699 # define U_SIZEOF_WCHAR_T 2 700 # endif 701 #elif U_PLATFORM == U_PF_OS390 702 /* 703 * z/OS V1R11 information center, section "LP64 | ILP32": 704 * "In 31-bit mode, the size of long and pointers is 4 bytes and the size of wchar_t is 2 bytes. 705 * Under LP64, the size of long and pointer is 8 bytes and the size of wchar_t is 4 bytes." 706 */ 707 # ifdef _LP64 708 # define U_SIZEOF_WCHAR_T 4 709 # else 710 # define U_SIZEOF_WCHAR_T 2 711 # endif 712 #elif U_PLATFORM == U_PF_OS400 713 # if defined(__UTF32__) 714 /* 715 * LOCALETYPE(*LOCALEUTF) is specified. 716 * Wide-character strings are in UTF-32, 717 * narrow-character strings are in UTF-8. 718 */ 719 # define U_SIZEOF_WCHAR_T 4 720 # elif defined(__UCS2__) 721 /* 722 * LOCALETYPE(*LOCALEUCS2) is specified. 723 * Wide-character strings are in UCS-2, 724 * narrow-character strings are in EBCDIC. 725 */ 726 # define U_SIZEOF_WCHAR_T 2 727 #else 728 /* 729 * LOCALETYPE(*CLD) or LOCALETYPE(*LOCALE) is specified. 730 * Wide-character strings are in 16-bit EBCDIC, 731 * narrow-character strings are in EBCDIC. 732 */ 733 # define U_SIZEOF_WCHAR_T 2 734 # endif 735 #else 736 # define U_SIZEOF_WCHAR_T 4 737 #endif 738 739 #ifndef U_HAVE_WCSCPY 740 #define U_HAVE_WCSCPY U_HAVE_WCHAR_H 741 #endif 742 743 /** @} */ 744 745 /** 746 * \def U_HAVE_CHAR16_T 747 * Defines whether the char16_t type is available for UTF-16 748 * and u"abc" UTF-16 string literals are supported. 749 * This is a new standard type and standard string literal syntax in C++0x 750 * but has been available in some compilers before. 751 * @internal 752 */ 753 #ifdef U_HAVE_CHAR16_T 754 /* Use the predefined value. */ 755 #else 756 /* 757 * Notes: 758 * Visual Studio 10 (_MSC_VER>=1600) defines char16_t but 759 * does not support u"abc" string literals. 760 * gcc 4.4 defines the __CHAR16_TYPE__ macro to a usable type but 761 * does not support u"abc" string literals. 762 * C++11 and C11 require support for UTF-16 literals 763 * TODO: Fix for plain C. Doesn't work on Mac. 764 */ 765 # if U_CPLUSPLUS_VERSION >= 11 || (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) 766 # define U_HAVE_CHAR16_T 1 767 # else 768 # define U_HAVE_CHAR16_T 0 769 # endif 770 #endif 771 772 /** 773 * @{ 774 * \def U_DECLARE_UTF16 775 * Do not use this macro because it is not defined on all platforms. 776 * Use the UNICODE_STRING or U_STRING_DECL macros instead. 777 * @internal 778 */ 779 #ifdef U_DECLARE_UTF16 780 /* Use the predefined value. */ 781 #elif U_HAVE_CHAR16_T \ 782 || (defined(__xlC__) && defined(__IBM_UTF_LITERAL) && U_SIZEOF_WCHAR_T != 2) \ 783 || (defined(__HP_aCC) && __HP_aCC >= 035000) \ 784 || (defined(__HP_cc) && __HP_cc >= 111106) 785 # define U_DECLARE_UTF16(string) u ## string 786 #elif U_SIZEOF_WCHAR_T == 2 \ 787 && (U_CHARSET_FAMILY == 0 || (U_PF_OS390 <= U_PLATFORM && U_PLATFORM <= U_PF_OS400 && defined(__UCS2__))) 788 # define U_DECLARE_UTF16(string) L ## string 789 #else 790 /* Leave U_DECLARE_UTF16 undefined. See unistr.h. */ 791 #endif 792 793 /** @} */ 794 795 /*===========================================================================*/ 796 /** @{ Symbol import-export control */ 797 /*===========================================================================*/ 798 799 #ifdef U_EXPORT 800 /* Use the predefined value. */ 801 #elif defined(U_STATIC_IMPLEMENTATION) 802 # define U_EXPORT 803 #elif defined(__GNUC__) 804 # define U_EXPORT __attribute__((visibility("default"))) 805 #elif (defined(__SUNPRO_CC) && __SUNPRO_CC >= 0x550) \ 806 || (defined(__SUNPRO_C) && __SUNPRO_C >= 0x550) 807 # define U_EXPORT __global 808 /*#elif defined(__HP_aCC) || defined(__HP_cc) 809 # define U_EXPORT __declspec(dllexport)*/ 810 #elif defined(_MSC_VER) 811 # define U_EXPORT __declspec(dllexport) 812 #else 813 # define U_EXPORT 814 #endif 815 816 /* U_CALLCONV is releated to U_EXPORT2 */ 817 #ifdef U_EXPORT2 818 /* Use the predefined value. */ 819 #elif defined(_MSC_VER) 820 # define U_EXPORT2 __cdecl 821 #else 822 # define U_EXPORT2 823 #endif 824 825 #ifdef U_IMPORT 826 /* Use the predefined value. */ 827 #elif defined(_MSC_VER) 828 /* Windows needs to export/import data. */ 829 # define U_IMPORT __declspec(dllimport) 830 #else 831 # define U_IMPORT 832 #endif 833 834 /** 835 * \def U_CALLCONV 836 * Similar to U_CDECL_BEGIN/U_CDECL_END, this qualifier is necessary 837 * in callback function typedefs to make sure that the calling convention 838 * is compatible. 839 * 840 * This is only used for non-ICU-API functions. 841 * When a function is a public ICU API, 842 * you must use the U_CAPI and U_EXPORT2 qualifiers. 843 * 844 * Please note, you need to use U_CALLCONV after the *. 845 * 846 * NO : "static const char U_CALLCONV *func( . . . )" 847 * YES: "static const char* U_CALLCONV func( . . . )" 848 * 849 * @stable ICU 2.0 850 */ 851 #if U_PLATFORM == U_PF_OS390 && defined(__cplusplus) 852 # define U_CALLCONV __cdecl 853 #else 854 # define U_CALLCONV U_EXPORT2 855 #endif 856 857 /** 858 * \def U_CALLCONV_FPTR 859 * Similar to U_CALLCONV, but only used on function pointers. 860 * @internal 861 */ 862 #if U_PLATFORM == U_PF_OS390 && defined(__cplusplus) 863 # define U_CALLCONV_FPTR U_CALLCONV 864 #else 865 # define U_CALLCONV_FPTR 866 #endif 867 /* @} */ 868 869 #endif 870
