diff options
Diffstat (limited to 'intl/icu/source/common/unicode/platform.h')
| -rw-r--r-- | intl/icu/source/common/unicode/platform.h | 881 |
1 files changed, 881 insertions, 0 deletions
diff --git a/intl/icu/source/common/unicode/platform.h b/intl/icu/source/common/unicode/platform.h new file mode 100644 index 0000000000..a997843660 --- /dev/null +++ b/intl/icu/source/common/unicode/platform.h @@ -0,0 +1,881 @@ +// © 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) && (defined(TARGET_OS_MACCATALYST) && !TARGET_OS_MACCATALYST) /* 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 + + +#if defined(__clang__) +#define UPRV_NO_SANITIZE_UNDEFINED __attribute__((no_sanitize("undefined"))) +#else +#define UPRV_NO_SANITIZE_UNDEFINED +#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 + +/** + * \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++11 + * but has been available in some compilers before. + * @internal + */ +#ifdef U_HAVE_CHAR16_T + /* Use the predefined value. */ +#else + /* + * Notes: + * 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 related 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_HIDDEN + * This is used to mark internal structs declared within external classes, + * to prevent the internal structs from having the same visibility as the + * class within which they are declared. + * @internal + */ +#ifdef U_HIDDEN + /* Use the predefined value. */ +#elif defined(__GNUC__) +# define U_HIDDEN __attribute__((visibility("hidden"))) +#else +# define U_HIDDEN +#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 |