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Diffstat (limited to 'intl/icu/source/common/unicode/umachine.h')
| -rw-r--r-- | intl/icu/source/common/unicode/umachine.h | 381 |
1 files changed, 381 insertions, 0 deletions
diff --git a/intl/icu/source/common/unicode/umachine.h b/intl/icu/source/common/unicode/umachine.h new file mode 100644 index 000000000..51581c7dc --- /dev/null +++ b/intl/icu/source/common/unicode/umachine.h @@ -0,0 +1,381 @@ +// Copyright (C) 2016 and later: Unicode, Inc. and others. +// License & terms of use: http://www.unicode.org/copyright.html +/* +****************************************************************************** +* +* Copyright (C) 1999-2015, International Business Machines +* Corporation and others. All Rights Reserved. +* +****************************************************************************** +* file name: umachine.h +* encoding: US-ASCII +* tab size: 8 (not used) +* indentation:4 +* +* created on: 1999sep13 +* created by: Markus W. Scherer +* +* This file defines basic types and constants for ICU to be +* platform-independent. umachine.h and utf.h are included into +* utypes.h to provide all the general definitions for ICU. +* All of these definitions used to be in utypes.h before +* the UTF-handling macros made this unmaintainable. +*/ + +#ifndef __UMACHINE_H__ +#define __UMACHINE_H__ + + +/** + * \file + * \brief Basic types and constants for UTF + * + * <h2> Basic types and constants for UTF </h2> + * This file defines basic types and constants for utf.h to be + * platform-independent. umachine.h and utf.h are included into + * utypes.h to provide all the general definitions for ICU. + * All of these definitions used to be in utypes.h before + * the UTF-handling macros made this unmaintainable. + * + */ +/*==========================================================================*/ +/* Include platform-dependent definitions */ +/* which are contained in the platform-specific file platform.h */ +/*==========================================================================*/ + +#include "unicode/ptypes.h" /* platform.h is included in ptypes.h */ + +/* + * ANSI C headers: + * stddef.h defines wchar_t + */ +#include <stddef.h> + +#ifndef U_HIDE_INTERNAL_API +/* + * U_USE_CHAR16_T + * When defined, force use of char16_t for UChar. + * Note: char16_t is expected to become the default and required in the future, + * and this option will be removed. + * @internal + */ +#ifdef U_USE_CHAR16_T +#ifdef UCHAR_TYPE +#undef UCHAR_TYPE +#endif +#define UCHAR_TYPE char16_t + +/* + * In plain C, <uchar.h> is needed for the definition of char16_t + */ +#ifndef __cplusplus +#include <uchar.h> +#endif +#endif +#endif /* U_HIDE_INTERNAL_API */ + +/*==========================================================================*/ +/* For C wrappers, we use the symbol U_STABLE. */ +/* This works properly if the includer is C or C++. */ +/* Functions are declared U_STABLE return-type U_EXPORT2 function-name()... */ +/*==========================================================================*/ + +/** + * \def U_CFUNC + * This is used in a declaration of a library private ICU C function. + * @stable ICU 2.4 + */ + +/** + * \def U_CDECL_BEGIN + * This is used to begin a declaration of a library private ICU C API. + * @stable ICU 2.4 + */ + +/** + * \def U_CDECL_END + * This is used to end a declaration of a library private ICU C API + * @stable ICU 2.4 + */ + +#ifdef __cplusplus +# define U_CFUNC extern "C" +# define U_CDECL_BEGIN extern "C" { +# define U_CDECL_END } +#else +# define U_CFUNC extern +# define U_CDECL_BEGIN +# define U_CDECL_END +#endif + +#ifndef U_ATTRIBUTE_DEPRECATED +/** + * \def U_ATTRIBUTE_DEPRECATED + * This is used for GCC specific attributes + * @internal + */ +#if U_GCC_MAJOR_MINOR >= 302 +# define U_ATTRIBUTE_DEPRECATED __attribute__ ((deprecated)) +/** + * \def U_ATTRIBUTE_DEPRECATED + * This is used for Visual C++ specific attributes + * @internal + */ +#elif defined(_MSC_VER) && (_MSC_VER >= 1400) +# define U_ATTRIBUTE_DEPRECATED __declspec(deprecated) +#else +# define U_ATTRIBUTE_DEPRECATED +#endif +#endif + +/** This is used to declare a function as a public ICU C API @stable ICU 2.0*/ +#define U_CAPI U_CFUNC U_EXPORT +/** This is used to declare a function as a stable public ICU C API*/ +#define U_STABLE U_CAPI +/** This is used to declare a function as a draft public ICU C API */ +#define U_DRAFT U_CAPI +/** This is used to declare a function as a deprecated public ICU C API */ +#define U_DEPRECATED U_CAPI U_ATTRIBUTE_DEPRECATED +/** This is used to declare a function as an obsolete public ICU C API */ +#define U_OBSOLETE U_CAPI +/** This is used to declare a function as an internal ICU C API */ +#define U_INTERNAL U_CAPI + +/** + * \def U_OVERRIDE + * Defined to the C++11 "override" keyword if available. + * Denotes a class or member which is an override of the base class. + * May result in an error if it applied to something not an override. + * @internal + */ + +/** + * \def U_FINAL + * Defined to the C++11 "final" keyword if available. + * Denotes a class or member which may not be overridden in subclasses. + * May result in an error if subclasses attempt to override. + * @internal + */ + +#if U_CPLUSPLUS_VERSION >= 11 +/* C++11 */ +#ifndef U_OVERRIDE +#define U_OVERRIDE override +#endif +#ifndef U_FINAL +#define U_FINAL final +#endif +#else +/* not C++11 - define to nothing */ +#ifndef U_OVERRIDE +#define U_OVERRIDE +#endif +#ifndef U_FINAL +#define U_FINAL +#endif +#endif + +/*==========================================================================*/ +/* limits for int32_t etc., like in POSIX inttypes.h */ +/*==========================================================================*/ + +#ifndef INT8_MIN +/** The smallest value an 8 bit signed integer can hold @stable ICU 2.0 */ +# define INT8_MIN ((int8_t)(-128)) +#endif +#ifndef INT16_MIN +/** The smallest value a 16 bit signed integer can hold @stable ICU 2.0 */ +# define INT16_MIN ((int16_t)(-32767-1)) +#endif +#ifndef INT32_MIN +/** The smallest value a 32 bit signed integer can hold @stable ICU 2.0 */ +# define INT32_MIN ((int32_t)(-2147483647-1)) +#endif + +#ifndef INT8_MAX +/** The largest value an 8 bit signed integer can hold @stable ICU 2.0 */ +# define INT8_MAX ((int8_t)(127)) +#endif +#ifndef INT16_MAX +/** The largest value a 16 bit signed integer can hold @stable ICU 2.0 */ +# define INT16_MAX ((int16_t)(32767)) +#endif +#ifndef INT32_MAX +/** The largest value a 32 bit signed integer can hold @stable ICU 2.0 */ +# define INT32_MAX ((int32_t)(2147483647)) +#endif + +#ifndef UINT8_MAX +/** The largest value an 8 bit unsigned integer can hold @stable ICU 2.0 */ +# define UINT8_MAX ((uint8_t)(255U)) +#endif +#ifndef UINT16_MAX +/** The largest value a 16 bit unsigned integer can hold @stable ICU 2.0 */ +# define UINT16_MAX ((uint16_t)(65535U)) +#endif +#ifndef UINT32_MAX +/** The largest value a 32 bit unsigned integer can hold @stable ICU 2.0 */ +# define UINT32_MAX ((uint32_t)(4294967295U)) +#endif + +#if defined(U_INT64_T_UNAVAILABLE) +# error int64_t is required for decimal format and rule-based number format. +#else +# ifndef INT64_C +/** + * Provides a platform independent way to specify a signed 64-bit integer constant. + * note: may be wrong for some 64 bit platforms - ensure your compiler provides INT64_C + * @stable ICU 2.8 + */ +# define INT64_C(c) c ## LL +# endif +# ifndef UINT64_C +/** + * Provides a platform independent way to specify an unsigned 64-bit integer constant. + * note: may be wrong for some 64 bit platforms - ensure your compiler provides UINT64_C + * @stable ICU 2.8 + */ +# define UINT64_C(c) c ## ULL +# endif +# ifndef U_INT64_MIN +/** The smallest value a 64 bit signed integer can hold @stable ICU 2.8 */ +# define U_INT64_MIN ((int64_t)(INT64_C(-9223372036854775807)-1)) +# endif +# ifndef U_INT64_MAX +/** The largest value a 64 bit signed integer can hold @stable ICU 2.8 */ +# define U_INT64_MAX ((int64_t)(INT64_C(9223372036854775807))) +# endif +# ifndef U_UINT64_MAX +/** The largest value a 64 bit unsigned integer can hold @stable ICU 2.8 */ +# define U_UINT64_MAX ((uint64_t)(UINT64_C(18446744073709551615))) +# endif +#endif + +/*==========================================================================*/ +/* Boolean data type */ +/*==========================================================================*/ + +/** The ICU boolean type @stable ICU 2.0 */ +typedef int8_t UBool; + +#ifndef TRUE +/** The TRUE value of a UBool @stable ICU 2.0 */ +# define TRUE 1 +#endif +#ifndef FALSE +/** The FALSE value of a UBool @stable ICU 2.0 */ +# define FALSE 0 +#endif + + +/*==========================================================================*/ +/* Unicode data types */ +/*==========================================================================*/ + +/* wchar_t-related definitions -------------------------------------------- */ + +/* + * \def U_WCHAR_IS_UTF16 + * Defined if wchar_t uses UTF-16. + * + * @stable ICU 2.0 + */ +/* + * \def U_WCHAR_IS_UTF32 + * Defined if wchar_t uses UTF-32. + * + * @stable ICU 2.0 + */ +#if !defined(U_WCHAR_IS_UTF16) && !defined(U_WCHAR_IS_UTF32) +# ifdef __STDC_ISO_10646__ +# if (U_SIZEOF_WCHAR_T==2) +# define U_WCHAR_IS_UTF16 +# elif (U_SIZEOF_WCHAR_T==4) +# define U_WCHAR_IS_UTF32 +# endif +# elif defined __UCS2__ +# if (U_PF_OS390 <= U_PLATFORM && U_PLATFORM <= U_PF_OS400) && (U_SIZEOF_WCHAR_T==2) +# define U_WCHAR_IS_UTF16 +# endif +# elif defined(__UCS4__) || (U_PLATFORM == U_PF_OS400 && defined(__UTF32__)) +# if (U_SIZEOF_WCHAR_T==4) +# define U_WCHAR_IS_UTF32 +# endif +# elif U_PLATFORM_IS_DARWIN_BASED || (U_SIZEOF_WCHAR_T==4 && U_PLATFORM_IS_LINUX_BASED) +# define U_WCHAR_IS_UTF32 +# elif U_PLATFORM_HAS_WIN32_API +# define U_WCHAR_IS_UTF16 +# endif +#endif + +/* UChar and UChar32 definitions -------------------------------------------- */ + +/** Number of bytes in a UChar. @stable ICU 2.0 */ +#define U_SIZEOF_UCHAR 2 + +/** + * \var UChar + * Define UChar to be UCHAR_TYPE, if that is #defined (for example, to char16_t), + * or wchar_t if that is 16 bits wide; always assumed to be unsigned. + * If neither is available, then define UChar to be uint16_t. + * + * This makes the definition of UChar platform-dependent + * but allows direct string type compatibility with platforms with + * 16-bit wchar_t types. + * + * @stable ICU 4.4 + */ +#if defined(UCHAR_TYPE) + typedef UCHAR_TYPE UChar; +/* Not #elif U_HAVE_CHAR16_T -- because that is type-incompatible with pre-C++11 callers + typedef char16_t UChar; */ +#elif U_SIZEOF_WCHAR_T==2 + typedef wchar_t UChar; +#elif defined(__CHAR16_TYPE__) + typedef __CHAR16_TYPE__ UChar; +#else + typedef uint16_t UChar; +#endif + +/** + * Define UChar32 as a type for single Unicode code points. + * UChar32 is a signed 32-bit integer (same as int32_t). + * + * The Unicode code point range is 0..0x10ffff. + * All other values (negative or >=0x110000) are illegal as Unicode code points. + * They may be used as sentinel values to indicate "done", "error" + * or similar non-code point conditions. + * + * Before ICU 2.4 (Jitterbug 2146), UChar32 was defined + * to be wchar_t if that is 32 bits wide (wchar_t may be signed or unsigned) + * or else to be uint32_t. + * That is, the definition of UChar32 was platform-dependent. + * + * @see U_SENTINEL + * @stable ICU 2.4 + */ +typedef int32_t UChar32; + +/** + * This value is intended for sentinel values for APIs that + * (take or) return single code points (UChar32). + * It is outside of the Unicode code point range 0..0x10ffff. + * + * For example, a "done" or "error" value in a new API + * could be indicated with U_SENTINEL. + * + * ICU APIs designed before ICU 2.4 usually define service-specific "done" + * values, mostly 0xffff. + * Those may need to be distinguished from + * actual U+ffff text contents by calling functions like + * CharacterIterator::hasNext() or UnicodeString::length(). + * + * @return -1 + * @see UChar32 + * @stable ICU 2.4 + */ +#define U_SENTINEL (-1) + +#include "unicode/urename.h" + +#endif |