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platform.h
// © 2016 and later: Unicode, Inc. and others. // License & terms of use: http://www.unicode.org/copyright.html /* ****************************************************************************** * * Copyright (C) 1997-2016, International Business Machines * Corporation and others. All Rights Reserved. * ****************************************************************************** * * FILE NAME : platform.h * * Date Name Description * 05/13/98 nos Creation (content moved here from ptypes.h). * 03/02/99 stephen Added AS400 support. * 03/30/99 stephen Added Linux support. * 04/13/99 stephen Reworked for autoconf. ****************************************************************************** */ #ifndef _PLATFORM_H #define _PLATFORM_H #include "unicode/uconfig.h" #include "unicode/uvernum.h" /** * \file * \brief Basic types for the platform. * * This file used to be generated by autoconf/configure. * Starting with ICU 49, platform.h is a normal source file, * to simplify cross-compiling and working with non-autoconf/make build systems. * * When a value in this file does not work on a platform, then please * try to derive it from the U_PLATFORM value * (for which we might need a new value constant in rare cases) * and/or from other macros that are predefined by the compiler * or defined in standard (POSIX or platform or compiler) headers. * * As a temporary workaround, you can add an explicit \#define for some macros * before it is first tested, or add an equivalent -D macro definition * to the compiler's command line. * * Note: Some compilers provide ways to show the predefined macros. * For example, with gcc you can compile an empty .c file and have the compiler * print the predefined macros with * \code * gcc -E -dM -x c /dev/null | sort * \endcode * (You can provide an actual empty .c file rather than /dev/null. * <code>-x c++</code> is for C++.) */ /** * Define some things so that they can be documented. * @internal */ #ifdef U_IN_DOXYGEN /* * Problem: "platform.h:335: warning: documentation for unknown define U_HAVE_STD_STRING found." means that U_HAVE_STD_STRING is not documented. * 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. */ /* None for now. */ #endif /** * \def U_PLATFORM * The U_PLATFORM macro defines the platform we're on. * * We used to define one different, value-less macro per platform. * That made it hard to know the set of relevant platforms and macros, * and hard to deal with variants of platforms. * * Starting with ICU 49, we define platforms as numeric macros, * with ranges of values for related platforms and their variants. * The U_PLATFORM macro is set to one of these values. * * Historical note from the Solaris Wikipedia article: * AT&T and Sun collaborated on a project to merge the most popular Unix variants * on the market at that time: BSD, System V, and Xenix. * This became Unix System V Release 4 (SVR4). * * @internal */ /** Unknown platform. @internal */ #define U_PF_UNKNOWN 0 /** Windows @internal */ #define U_PF_WINDOWS 1000 /** MinGW. Windows, calls to Win32 API, but using GNU gcc and binutils. @internal */ #define U_PF_MINGW 1800 /** * Cygwin. Windows, calls to cygwin1.dll for Posix functions, * using MSVC or GNU gcc and binutils. * @internal */ #define U_PF_CYGWIN 1900 /* Reserve 2000 for U_PF_UNIX? */ /** HP-UX is based on UNIX System V. @internal */ #define U_PF_HPUX 2100 /** Solaris is a Unix operating system based on SVR4. @internal */ #define U_PF_SOLARIS 2600 /** BSD is a UNIX operating system derivative. @internal */ #define U_PF_BSD 3000 /** AIX is based on UNIX System V Releases and 4.3 BSD. @internal */ #define U_PF_AIX 3100 /** IRIX is based on UNIX System V with BSD extensions. @internal */ #define U_PF_IRIX 3200 /** * Darwin is a POSIX-compliant operating system, composed of code developed by Apple, * as well as code derived from NeXTSTEP, BSD, and other projects, * built around the Mach kernel. * Darwin forms the core set of components upon which Mac OS X, Apple TV, and iOS are based. * (Original description modified from WikiPedia.) * @internal */ #define U_PF_DARWIN 3500 /** iPhone OS (iOS) is a derivative of Mac OS X. @internal */ #define U_PF_IPHONE 3550 /** QNX is a commercial Unix-like real-time operating system related to BSD. @internal */ #define U_PF_QNX 3700 /** Linux is a Unix-like operating system. @internal */ #define U_PF_LINUX 4000 /** * Native Client is pretty close to Linux. * See https://developer.chrome.com/native-client and * http://www.chromium.org/nativeclient * @internal */ #define U_PF_BROWSER_NATIVE_CLIENT 4020 /** Android is based on Linux. @internal */ #define U_PF_ANDROID 4050 /** Fuchsia is a POSIX-ish platform. @internal */ #define U_PF_FUCHSIA 4100 /* Maximum value for Linux-based platform is 4499 */ /** * Emscripten is a C++ transpiler for the Web that can target asm.js or * WebAssembly. It provides some POSIX-compatible wrappers and stubs and * some Linux-like functionality, but is not fully compatible with * either. * @internal */ #define U_PF_EMSCRIPTEN 5010 /** z/OS is the successor to OS/390 which was the successor to MVS. @internal */ #define U_PF_OS390 9000 /** "IBM i" is the current name of what used to be i5/OS and earlier OS/400. @internal */ #define U_PF_OS400 9400 #ifdef U_PLATFORM /* Use the predefined value. */ #elif defined(__MINGW32__) # define U_PLATFORM U_PF_MINGW #elif defined(__CYGWIN__) # define U_PLATFORM U_PF_CYGWIN #elif defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64) # define U_PLATFORM U_PF_WINDOWS #elif defined(__ANDROID__) # define U_PLATFORM U_PF_ANDROID /* Android wchar_t support depends on the API level. */ # include <android/api-level.h> #elif defined(__pnacl__) || defined(__native_client__) # define U_PLATFORM U_PF_BROWSER_NATIVE_CLIENT #elif defined(__Fuchsia__) # define U_PLATFORM U_PF_FUCHSIA #elif defined(linux) || defined(__linux__) || defined(__linux) # define U_PLATFORM U_PF_LINUX #elif defined(__APPLE__) && defined(__MACH__) # include <TargetConditionals.h> # if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE /* variant of TARGET_OS_MAC */ # define U_PLATFORM U_PF_IPHONE # else # define U_PLATFORM U_PF_DARWIN # endif #elif defined(BSD) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__MirBSD__) # if defined(__FreeBSD__) # include <sys/endian.h> # endif # define U_PLATFORM U_PF_BSD #elif defined(sun) || defined(__sun) /* Check defined(__SVR4) || defined(__svr4__) to distinguish Solaris from SunOS? */ # define U_PLATFORM U_PF_SOLARIS # if defined(__GNUC__) /* Solaris/GCC needs this header file to get the proper endianness. Normally, this * header file is included with stddef.h but on Solairs/GCC, the GCC version of stddef.h * is included which does not include this header file. */ # include <sys/isa_defs.h> # endif #elif defined(_AIX) || defined(__TOS_AIX__) # define U_PLATFORM U_PF_AIX #elif defined(_hpux) || defined(hpux) || defined(__hpux) # define U_PLATFORM U_PF_HPUX #elif defined(sgi) || defined(__sgi) # define U_PLATFORM U_PF_IRIX #elif defined(__QNX__) || defined(__QNXNTO__) # define U_PLATFORM U_PF_QNX #elif defined(__TOS_MVS__) # define U_PLATFORM U_PF_OS390 #elif defined(__OS400__) || defined(__TOS_OS400__) # define U_PLATFORM U_PF_OS400 #elif defined(__EMSCRIPTEN__) # define U_PLATFORM U_PF_EMSCRIPTEN #else # define U_PLATFORM U_PF_UNKNOWN #endif /** * \def CYGWINMSVC * Defined if this is Windows with Cygwin, but using MSVC rather than gcc. * Otherwise undefined. * @internal */ /* Commented out because this is already set in mh-cygwin-msvc #if U_PLATFORM == U_PF_CYGWIN && defined(_MSC_VER) # define CYGWINMSVC #endif */ #ifdef U_IN_DOXYGEN # define CYGWINMSVC #endif /** * \def U_PLATFORM_USES_ONLY_WIN32_API * Defines whether the platform uses only the Win32 API. * Set to 1 for Windows/MSVC and MinGW but not Cygwin. * @internal */ #ifdef U_PLATFORM_USES_ONLY_WIN32_API /* Use the predefined value. */ #elif (U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_MINGW) || defined(CYGWINMSVC) # define U_PLATFORM_USES_ONLY_WIN32_API 1 #else /* Cygwin implements POSIX. */ # define U_PLATFORM_USES_ONLY_WIN32_API 0 #endif /** * \def U_PLATFORM_HAS_WIN32_API * Defines whether the Win32 API is available on the platform. * Set to 1 for Windows/MSVC, MinGW and Cygwin. * @internal */ #ifdef U_PLATFORM_HAS_WIN32_API /* Use the predefined value. */ #elif U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_CYGWIN # define U_PLATFORM_HAS_WIN32_API 1 #else # define U_PLATFORM_HAS_WIN32_API 0 #endif /** * \def U_PLATFORM_HAS_WINUWP_API * Defines whether target is intended for Universal Windows Platform API * Set to 1 for Windows10 Release Solution Configuration * @internal */ #ifdef U_PLATFORM_HAS_WINUWP_API /* Use the predefined value. */ #else # define U_PLATFORM_HAS_WINUWP_API 0 #endif /** * \def U_PLATFORM_IMPLEMENTS_POSIX * Defines whether the platform implements (most of) the POSIX API. * Set to 1 for Cygwin and most other platforms. * @internal */ #ifdef U_PLATFORM_IMPLEMENTS_POSIX /* Use the predefined value. */ #elif U_PLATFORM_USES_ONLY_WIN32_API # define U_PLATFORM_IMPLEMENTS_POSIX 0 #else # define U_PLATFORM_IMPLEMENTS_POSIX 1 #endif /** * \def U_PLATFORM_IS_LINUX_BASED * Defines whether the platform is Linux or one of its derivatives. * @internal */ #ifdef U_PLATFORM_IS_LINUX_BASED /* Use the predefined value. */ #elif U_PF_LINUX <= U_PLATFORM && U_PLATFORM <= 4499 # define U_PLATFORM_IS_LINUX_BASED 1 #else # define U_PLATFORM_IS_LINUX_BASED 0 #endif /** * \def U_PLATFORM_IS_DARWIN_BASED * Defines whether the platform is Darwin or one of its derivatives. * @internal */ #ifdef U_PLATFORM_IS_DARWIN_BASED /* Use the predefined value. */ #elif U_PF_DARWIN <= U_PLATFORM && U_PLATFORM <= U_PF_IPHONE # define U_PLATFORM_IS_DARWIN_BASED 1 #else # define U_PLATFORM_IS_DARWIN_BASED 0 #endif /** * \def U_HAVE_STDINT_H * Defines whether stdint.h is available. It is a C99 standard header. * We used to include inttypes.h which includes stdint.h but we usually do not need * the additional definitions from inttypes.h. * @internal */ #ifdef U_HAVE_STDINT_H /* Use the predefined value. */ #elif U_PLATFORM_USES_ONLY_WIN32_API # if defined(__BORLANDC__) || U_PLATFORM == U_PF_MINGW || (defined(_MSC_VER) && _MSC_VER>=1600) /* Windows Visual Studio 9 and below do not have stdint.h & inttypes.h, but VS 2010 adds them. */ # define U_HAVE_STDINT_H 1 # else # define U_HAVE_STDINT_H 0 # endif #elif U_PLATFORM == U_PF_SOLARIS /* Solaris has inttypes.h but not stdint.h. */ # define U_HAVE_STDINT_H 0 #elif U_PLATFORM == U_PF_AIX && !defined(_AIX51) && defined(_POWER) /* PPC AIX <= 4.3 has inttypes.h but not stdint.h. */ # define U_HAVE_STDINT_H 0 #else # define U_HAVE_STDINT_H 1 #endif /** * \def U_HAVE_INTTYPES_H * Defines whether inttypes.h is available. It is a C99 standard header. * We include inttypes.h where it is available but stdint.h is not. * @internal */ #ifdef U_HAVE_INTTYPES_H /* Use the predefined value. */ #elif U_PLATFORM == U_PF_SOLARIS /* Solaris has inttypes.h but not stdint.h. */ # define U_HAVE_INTTYPES_H 1 #elif U_PLATFORM == U_PF_AIX && !defined(_AIX51) && defined(_POWER) /* PPC AIX <= 4.3 has inttypes.h but not stdint.h. */ # define U_HAVE_INTTYPES_H 1 #else /* Most platforms have both inttypes.h and stdint.h, or neither. */ # define U_HAVE_INTTYPES_H U_HAVE_STDINT_H #endif /*===========================================================================*/ /** @{ Compiler and environment features */ /*===========================================================================*/ /** * \def U_GCC_MAJOR_MINOR * Indicates whether the compiler is gcc (test for != 0), * and if so, contains its major (times 100) and minor version numbers. * If the compiler is not gcc, then U_GCC_MAJOR_MINOR == 0. * * For example, for testing for whether we have gcc, and whether it's 4.6 or higher, * use "#if U_GCC_MAJOR_MINOR >= 406". * @internal */ #ifdef __GNUC__ # define U_GCC_MAJOR_MINOR (__GNUC__ * 100 + __GNUC_MINOR__) #else # define U_GCC_MAJOR_MINOR 0 #endif /** * \def U_IS_BIG_ENDIAN * Determines the endianness of the platform. * @internal */ #ifdef U_IS_BIG_ENDIAN /* Use the predefined value. */ #elif defined(BYTE_ORDER) && defined(BIG_ENDIAN) # define U_IS_BIG_ENDIAN (BYTE_ORDER == BIG_ENDIAN) #elif defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) /* gcc */ # define U_IS_BIG_ENDIAN (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) #elif defined(__BIG_ENDIAN__) || defined(_BIG_ENDIAN) # define U_IS_BIG_ENDIAN 1 #elif defined(__LITTLE_ENDIAN__) || defined(_LITTLE_ENDIAN) # define U_IS_BIG_ENDIAN 0 #elif U_PLATFORM == U_PF_OS390 || U_PLATFORM == U_PF_OS400 || defined(__s390__) || defined(__s390x__) /* These platforms do not appear to predefine any endianness macros. */ # define U_IS_BIG_ENDIAN 1 #elif defined(_PA_RISC1_0) || defined(_PA_RISC1_1) || defined(_PA_RISC2_0) /* HPPA do not appear to predefine any endianness macros. */ # define U_IS_BIG_ENDIAN 1 #elif defined(sparc) || defined(__sparc) || defined(__sparc__) /* Some sparc based systems (e.g. Linux) do not predefine any endianness macros. */ # define U_IS_BIG_ENDIAN 1 #else # define U_IS_BIG_ENDIAN 0 #endif /** * \def U_HAVE_PLACEMENT_NEW * Determines whether to override placement new and delete for STL. * @stable ICU 2.6 */ #ifdef U_HAVE_PLACEMENT_NEW /* Use the predefined value. */ #elif defined(__BORLANDC__) # define U_HAVE_PLACEMENT_NEW 0 #else # define U_HAVE_PLACEMENT_NEW 1 #endif /** * \def U_HAVE_DEBUG_LOCATION_NEW * Define this to define the MFC debug version of the operator new. * * @stable ICU 3.4 */ #ifdef U_HAVE_DEBUG_LOCATION_NEW /* Use the predefined value. */ #elif defined(_MSC_VER) # define U_HAVE_DEBUG_LOCATION_NEW 1 #else # define U_HAVE_DEBUG_LOCATION_NEW 0 #endif /* Compatibility with compilers other than clang: http://clang.llvm.org/docs/LanguageExtensions.html */ #ifdef __has_attribute # define UPRV_HAS_ATTRIBUTE(x) __has_attribute(x) #else # define UPRV_HAS_ATTRIBUTE(x) 0 #endif #ifdef __has_cpp_attribute # define UPRV_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x) #else # define UPRV_HAS_CPP_ATTRIBUTE(x) 0 #endif #ifdef __has_declspec_attribute # define UPRV_HAS_DECLSPEC_ATTRIBUTE(x) __has_declspec_attribute(x) #else # define UPRV_HAS_DECLSPEC_ATTRIBUTE(x) 0 #endif #ifdef __has_builtin # define UPRV_HAS_BUILTIN(x) __has_builtin(x) #else # define UPRV_HAS_BUILTIN(x) 0 #endif #ifdef __has_feature # define UPRV_HAS_FEATURE(x) __has_feature(x) #else # define UPRV_HAS_FEATURE(x) 0 #endif #ifdef __has_extension # define UPRV_HAS_EXTENSION(x) __has_extension(x) #else # define UPRV_HAS_EXTENSION(x) 0 #endif #ifdef __has_warning # define UPRV_HAS_WARNING(x) __has_warning(x) #else # define UPRV_HAS_WARNING(x) 0 #endif /** * \def U_MALLOC_ATTR * Attribute to mark functions as malloc-like * @internal */ #if defined(__GNUC__) && __GNUC__>=3 # define U_MALLOC_ATTR __attribute__ ((__malloc__)) #else # define U_MALLOC_ATTR #endif /** * \def U_ALLOC_SIZE_ATTR * Attribute to specify the size of the allocated buffer for malloc-like functions * @internal */ #if (defined(__GNUC__) && \ (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))) || \ UPRV_HAS_ATTRIBUTE(alloc_size) # define U_ALLOC_SIZE_ATTR(X) __attribute__ ((alloc_size(X))) # define U_ALLOC_SIZE_ATTR2(X,Y) __attribute__ ((alloc_size(X,Y))) #else # define U_ALLOC_SIZE_ATTR(X) # define U_ALLOC_SIZE_ATTR2(X,Y) #endif /** * \def U_CPLUSPLUS_VERSION * 0 if no C++; 1, 11, 14, ... if C++. * Support for specific features cannot always be determined by the C++ version alone. * @internal */ #ifdef U_CPLUSPLUS_VERSION # if U_CPLUSPLUS_VERSION != 0 && !defined(__cplusplus) # undef U_CPLUSPLUS_VERSION # define U_CPLUSPLUS_VERSION 0 # endif /* Otherwise use the predefined value. */ #elif !defined(__cplusplus) # define U_CPLUSPLUS_VERSION 0 #elif __cplusplus >= 201402L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201402L) # define U_CPLUSPLUS_VERSION 14 #elif __cplusplus >= 201103L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201103L) # define U_CPLUSPLUS_VERSION 11 #else // C++98 or C++03 # define U_CPLUSPLUS_VERSION 1 #endif #if (U_PLATFORM == U_PF_AIX || U_PLATFORM == U_PF_OS390) && defined(__cplusplus) &&(U_CPLUSPLUS_VERSION < 11) // add in std::nullptr_t namespace std { typedef decltype(nullptr) nullptr_t; }; #endif /** * \def U_NOEXCEPT * "noexcept" if supported, otherwise empty. * Some code, especially STL containers, uses move semantics of objects only * if the move constructor and the move operator are declared as not throwing exceptions. * @internal */ #ifdef U_NOEXCEPT /* Use the predefined value. */ #else # define U_NOEXCEPT noexcept #endif /** * \def U_FALLTHROUGH * Annotate intentional fall-through between switch labels. * http://clang.llvm.org/docs/AttributeReference.html#fallthrough-clang-fallthrough * @internal */ #ifndef __cplusplus // Not for C. #elif defined(U_FALLTHROUGH) // Use the predefined value. #elif defined(__clang__) // Test for compiler vs. feature separately. // Other compilers might choke on the feature test. # if UPRV_HAS_CPP_ATTRIBUTE(clang::fallthrough) || \ (UPRV_HAS_FEATURE(cxx_attributes) && \ UPRV_HAS_WARNING("-Wimplicit-fallthrough")) # define U_FALLTHROUGH [[clang::fallthrough]] # endif #elif defined(__GNUC__) && (__GNUC__ >= 7) # define U_FALLTHROUGH __attribute__((fallthrough)) #endif #ifndef U_FALLTHROUGH # define U_FALLTHROUGH #endif /** @} */ /*===========================================================================*/ /** @{ Character data types */ /*===========================================================================*/ /** * U_CHARSET_FAMILY is equal to this value when the platform is an ASCII based platform. * @stable ICU 2.0 */ #define U_ASCII_FAMILY 0 /** * U_CHARSET_FAMILY is equal to this value when the platform is an EBCDIC based platform. * @stable ICU 2.0 */ #define U_EBCDIC_FAMILY 1 /** * \def U_CHARSET_FAMILY * * <p>These definitions allow to specify the encoding of text * in the char data type as defined by the platform and the compiler. * It is enough to determine the code point values of "invariant characters", * which are the ones shared by all encodings that are in use * on a given platform.</p> * * <p>Those "invariant characters" should be all the uppercase and lowercase * latin letters, the digits, the space, and "basic punctuation". * Also, '\\n', '\\r', '\\t' should be available.</p> * * <p>The list of "invariant characters" is:<br> * \code * A-Z a-z 0-9 SPACE " % & ' ( ) * + , - . / : ; < = > ? _ * \endcode * <br> * (52 letters + 10 numbers + 20 punc/sym/space = 82 total)</p> * * <p>This matches the IBM Syntactic Character Set (CS 640).</p> * * <p>In other words, all the graphic characters in 7-bit ASCII should * be safely accessible except the following:</p> * * \code * '\' <backslash> * '[' <left bracket> * ']' <right bracket> * '{' <left brace> * '}' <right brace> * '^' <circumflex> * '~' <tilde> * '!' <exclamation mark> * '#' <number sign> * '|' <vertical line> * '$' <dollar sign> * '@' <commercial at> * '`' <grave accent> * \endcode * @stable ICU 2.0 */ #ifdef U_CHARSET_FAMILY /* Use the predefined value. */ #elif U_PLATFORM == U_PF_OS390 && (!defined(__CHARSET_LIB) || !__CHARSET_LIB) # define U_CHARSET_FAMILY U_EBCDIC_FAMILY #elif U_PLATFORM == U_PF_OS400 && !defined(__UTF32__) # define U_CHARSET_FAMILY U_EBCDIC_FAMILY #else # define U_CHARSET_FAMILY U_ASCII_FAMILY #endif /** * \def U_CHARSET_IS_UTF8 * * Hardcode the default charset to UTF-8. * * If this is set to 1, then * - ICU will assume that all non-invariant char*, StringPiece, std::string etc. * contain UTF-8 text, regardless of what the system API uses * - some ICU code will use fast functions like u_strFromUTF8() * rather than the more general and more heavy-weight conversion API (ucnv.h) * - ucnv_getDefaultName() always returns "UTF-8" * - ucnv_setDefaultName() is disabled and will not change the default charset * - static builds of ICU are smaller * - more functionality is available with the UCONFIG_NO_CONVERSION build-time * configuration option (see unicode/uconfig.h) * - the UCONFIG_NO_CONVERSION build option in uconfig.h is more usable * * @stable ICU 4.2 * @see UCONFIG_NO_CONVERSION */ #ifdef U_CHARSET_IS_UTF8 /* Use the predefined value. */ #elif U_PLATFORM_IS_LINUX_BASED || U_PLATFORM_IS_DARWIN_BASED || \ U_PLATFORM == U_PF_EMSCRIPTEN # define U_CHARSET_IS_UTF8 1 #else # define U_CHARSET_IS_UTF8 0 #endif /** @} */ /*===========================================================================*/ /** @{ Information about wchar support */ /*===========================================================================*/ /** * \def U_HAVE_WCHAR_H * Indicates whether <wchar.h> is available (1) or not (0). Set to 1 by default. * * @stable ICU 2.0 */ #ifdef U_HAVE_WCHAR_H /* Use the predefined value. */ #elif U_PLATFORM == U_PF_ANDROID && __ANDROID_API__ < 9 /* * Android before Gingerbread (Android 2.3, API level 9) did not support wchar_t. * The type and header existed, but the library functions did not work as expected. * The size of wchar_t was 1 but L"xyz" string literals had 32-bit units anyway. */ # define U_HAVE_WCHAR_H 0 #else # define U_HAVE_WCHAR_H 1 #endif /** * \def U_SIZEOF_WCHAR_T * U_SIZEOF_WCHAR_T==sizeof(wchar_t) * * @stable ICU 2.0 */ #ifdef U_SIZEOF_WCHAR_T /* Use the predefined value. */ #elif (U_PLATFORM == U_PF_ANDROID && __ANDROID_API__ < 9) /* * Classic Mac OS and Mac OS X before 10.3 (Panther) did not support wchar_t or wstring. * Newer Mac OS X has size 4. */ # define U_SIZEOF_WCHAR_T 1 #elif U_PLATFORM_HAS_WIN32_API || U_PLATFORM == U_PF_CYGWIN # define U_SIZEOF_WCHAR_T 2 #elif U_PLATFORM == U_PF_AIX /* * AIX 6.1 information, section "Wide character data representation": * "... the wchar_t datatype is 32-bit in the 64-bit environment and * 16-bit in the 32-bit environment." * and * "All locales use Unicode for their wide character code values (process code), * except the IBM-eucTW codeset." */ # ifdef __64BIT__ # define U_SIZEOF_WCHAR_T 4 # else # define U_SIZEOF_WCHAR_T 2 # endif #elif U_PLATFORM == U_PF_OS390 /* * z/OS V1R11 information center, section "LP64 | ILP32": * "In 31-bit mode, the size of long and pointers is 4 bytes and the size of wchar_t is 2 bytes. * Under LP64, the size of long and pointer is 8 bytes and the size of wchar_t is 4 bytes." */ # ifdef _LP64 # define U_SIZEOF_WCHAR_T 4 # else # define U_SIZEOF_WCHAR_T 2 # endif #elif U_PLATFORM == U_PF_OS400 # if defined(__UTF32__) /* * LOCALETYPE(*LOCALEUTF) is specified. * Wide-character strings are in UTF-32, * narrow-character strings are in UTF-8. */ # define U_SIZEOF_WCHAR_T 4 # elif defined(__UCS2__) /* * LOCALETYPE(*LOCALEUCS2) is specified. * Wide-character strings are in UCS-2, * narrow-character strings are in EBCDIC. */ # define U_SIZEOF_WCHAR_T 2 # else /* * LOCALETYPE(*CLD) or LOCALETYPE(*LOCALE) is specified. * Wide-character strings are in 16-bit EBCDIC, * narrow-character strings are in EBCDIC. */ # define U_SIZEOF_WCHAR_T 2 # endif #else # define U_SIZEOF_WCHAR_T 4 #endif #ifndef U_HAVE_WCSCPY #define U_HAVE_WCSCPY U_HAVE_WCHAR_H #endif /** @} */ /** * \def U_HAVE_CHAR16_T * Defines whether the char16_t type is available for UTF-16 * and u"abc" UTF-16 string literals are supported. * This is a new standard type and standard string literal syntax in C++0x * but has been available in some compilers before. * @internal */ #ifdef U_HAVE_CHAR16_T /* Use the predefined value. */ #else /* * Notes: * Visual Studio 2010 (_MSC_VER==1600) defines char16_t as a typedef * and does not support u"abc" string literals. * Visual Studio 2015 (_MSC_VER>=1900) and above adds support for * both char16_t and u"abc" string literals. * gcc 4.4 defines the __CHAR16_TYPE__ macro to a usable type but * does not support u"abc" string literals. * C++11 and C11 require support for UTF-16 literals * TODO: Fix for plain C. Doesn't work on Mac. */ # if U_CPLUSPLUS_VERSION >= 11 || (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) # define U_HAVE_CHAR16_T 1 # else # define U_HAVE_CHAR16_T 0 # endif #endif /** * @{ * \def U_DECLARE_UTF16 * Do not use this macro because it is not defined on all platforms. * Use the UNICODE_STRING or U_STRING_DECL macros instead. * @internal */ #ifdef U_DECLARE_UTF16 /* Use the predefined value. */ #elif U_HAVE_CHAR16_T \ || (defined(__xlC__) && defined(__IBM_UTF_LITERAL) && U_SIZEOF_WCHAR_T != 2) \ || (defined(__HP_aCC) && __HP_aCC >= 035000) \ || (defined(__HP_cc) && __HP_cc >= 111106) \ || (defined(U_IN_DOXYGEN)) # define U_DECLARE_UTF16(string) u ## string #elif U_SIZEOF_WCHAR_T == 2 \ && (U_CHARSET_FAMILY == 0 || (U_PF_OS390 <= U_PLATFORM && U_PLATFORM <= U_PF_OS400 && defined(__UCS2__))) # define U_DECLARE_UTF16(string) L ## string #else /* Leave U_DECLARE_UTF16 undefined. See unistr.h. */ #endif /** @} */ /*===========================================================================*/ /** @{ Symbol import-export control */ /*===========================================================================*/ #ifdef U_EXPORT /* Use the predefined value. */ #elif defined(U_STATIC_IMPLEMENTATION) # define U_EXPORT #elif defined(_MSC_VER) || (UPRV_HAS_DECLSPEC_ATTRIBUTE(dllexport) && \ UPRV_HAS_DECLSPEC_ATTRIBUTE(dllimport)) # define U_EXPORT __declspec(dllexport) #elif defined(__GNUC__) # define U_EXPORT __attribute__((visibility("default"))) #elif (defined(__SUNPRO_CC) && __SUNPRO_CC >= 0x550) \ || (defined(__SUNPRO_C) && __SUNPRO_C >= 0x550) # define U_EXPORT __global /*#elif defined(__HP_aCC) || defined(__HP_cc) # define U_EXPORT __declspec(dllexport)*/ #else # define U_EXPORT #endif /* U_CALLCONV is releated to U_EXPORT2 */ #ifdef U_EXPORT2 /* Use the predefined value. */ #elif defined(_MSC_VER) # define U_EXPORT2 __cdecl #else # define U_EXPORT2 #endif #ifdef U_IMPORT /* Use the predefined value. */ #elif defined(_MSC_VER) || (UPRV_HAS_DECLSPEC_ATTRIBUTE(dllexport) && \ UPRV_HAS_DECLSPEC_ATTRIBUTE(dllimport)) /* Windows needs to export/import data. */ # define U_IMPORT __declspec(dllimport) #else # define U_IMPORT #endif /** * \def U_CALLCONV * Similar to U_CDECL_BEGIN/U_CDECL_END, this qualifier is necessary * in callback function typedefs to make sure that the calling convention * is compatible. * * This is only used for non-ICU-API functions. * When a function is a public ICU API, * you must use the U_CAPI and U_EXPORT2 qualifiers. * * Please note, you need to use U_CALLCONV after the *. * * NO : "static const char U_CALLCONV *func( . . . )" * YES: "static const char* U_CALLCONV func( . . . )" * * @stable ICU 2.0 */ #if U_PLATFORM == U_PF_OS390 && defined(__cplusplus) # define U_CALLCONV __cdecl #else # define U_CALLCONV U_EXPORT2 #endif /** * \def U_CALLCONV_FPTR * Similar to U_CALLCONV, but only used on function pointers. * @internal */ #if U_PLATFORM == U_PF_OS390 && defined(__cplusplus) # define U_CALLCONV_FPTR U_CALLCONV #else # define U_CALLCONV_FPTR #endif /* @} */ #endif // _PLATFORM_H
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