ICU 74.2: common/unicode/umachine.h Source File

ICU 74.2 74.2

umachine.h
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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) 1999-2015, International Business Machines
7* Corporation and others. All Rights Reserved.
8*
9******************************************************************************
10* file name: umachine.h
11* encoding: UTF-8
12* tab size: 8 (not used)
13* indentation:4
14*
15* created on: 1999sep13
16* created by: Markus W. Scherer
17*
18* This file defines basic types and constants for ICU to be
19* platform-independent. umachine.h and utf.h are included into
20* utypes.h to provide all the general definitions for ICU.
21* All of these definitions used to be in utypes.h before
22* the UTF-handling macros made this unmaintainable.
23*/
24
25#ifndef __UMACHINE_H__
26#define __UMACHINE_H__
27
28
41/*==========================================================================*/
42/* Include platform-dependent definitions */
43/* which are contained in the platform-specific file platform.h */
44/*==========================================================================*/
45
46#include "unicode/ptypes.h" /* platform.h is included in ptypes.h */
47
48/*
49 * ANSI C headers:
50 * stddef.h defines wchar_t
51 */
52#include <stdbool.h>
53#include <stddef.h>
54
55/*==========================================================================*/
56/* For C wrappers, we use the symbol U_CAPI. */
57/* This works properly if the includer is C or C++. */
58/* Functions are declared U_CAPI return-type U_EXPORT2 function-name()... */
59/*==========================================================================*/
60
79#ifdef __cplusplus
80# define U_CFUNC extern "C"
81# define U_CDECL_BEGIN extern "C" {
82# define U_CDECL_END }
83#else
84# define U_CFUNC extern
85# define U_CDECL_BEGIN
86# define U_CDECL_END
87#endif
88
89#ifndef U_ATTRIBUTE_DEPRECATED
95#if U_GCC_MAJOR_MINOR >= 302
96# define U_ATTRIBUTE_DEPRECATED __attribute__ ((deprecated))
102#elif defined(_MSC_VER) && (_MSC_VER >= 1400)
103# define U_ATTRIBUTE_DEPRECATED __declspec(deprecated)
104#else
105# define U_ATTRIBUTE_DEPRECATED
106#endif
107#endif
108
110#define U_CAPI U_CFUNC U_EXPORT
112#define U_STABLE U_CAPI
114#define U_DRAFT U_CAPI
116#define U_DEPRECATED U_CAPI U_ATTRIBUTE_DEPRECATED
118#define U_OBSOLETE U_CAPI
120#define U_INTERNAL U_CAPI
121
122// Before ICU 65, function-like, multi-statement ICU macros were just defined as
123// series of statements wrapped in { } blocks and the caller could choose to
124// either treat them as if they were actual functions and end the invocation
125// with a trailing ; creating an empty statement after the block or else omit
126// this trailing ; using the knowledge that the macro would expand to { }.
127//
128// But doing so doesn't work well with macros that look like functions and
129// compiler warnings about empty statements (ICU-20601) and ICU 65 therefore
130// switches to the standard solution of wrapping such macros in do { } while.
131//
132// This will however break existing code that depends on being able to invoke
133// these macros without a trailing ; so to be able to remain compatible with
134// such code the wrapper is itself defined as macros so that it's possible to
135// build ICU 65 and later with the old macro behaviour, like this:
136//
137// export CPPFLAGS='-DUPRV_BLOCK_MACRO_BEGIN="" -DUPRV_BLOCK_MACRO_END=""'
138// runConfigureICU ...
139//
140
146#ifndef UPRV_BLOCK_MACRO_BEGIN
147#define UPRV_BLOCK_MACRO_BEGIN do
148#endif
149
155#ifndef UPRV_BLOCK_MACRO_END
156#define UPRV_BLOCK_MACRO_END while (false)
157#endif
158
159/*==========================================================================*/
160/* limits for int32_t etc., like in POSIX inttypes.h */
161/*==========================================================================*/
162
163#ifndef INT8_MIN
165# define INT8_MIN ((int8_t)(-128))
166#endif
167#ifndef INT16_MIN
169# define INT16_MIN ((int16_t)(-32767-1))
170#endif
171#ifndef INT32_MIN
173# define INT32_MIN ((int32_t)(-2147483647-1))
174#endif
175
176#ifndef INT8_MAX
178# define INT8_MAX ((int8_t)(127))
179#endif
180#ifndef INT16_MAX
182# define INT16_MAX ((int16_t)(32767))
183#endif
184#ifndef INT32_MAX
186# define INT32_MAX ((int32_t)(2147483647))
187#endif
188
189#ifndef UINT8_MAX
191# define UINT8_MAX ((uint8_t)(255U))
192#endif
193#ifndef UINT16_MAX
195# define UINT16_MAX ((uint16_t)(65535U))
196#endif
197#ifndef UINT32_MAX
199# define UINT32_MAX ((uint32_t)(4294967295U))
200#endif
201
202#if defined(U_INT64_T_UNAVAILABLE)
203# error int64_t is required for decimal format and rule-based number format.
204#else
205# ifndef INT64_C
211# define INT64_C(c) c ## LL
212# endif
213# ifndef UINT64_C
219# define UINT64_C(c) c ## ULL
220# endif
221# ifndef U_INT64_MIN
223# define U_INT64_MIN ((int64_t)(INT64_C(-9223372036854775807)-1))
224# endif
225# ifndef U_INT64_MAX
227# define U_INT64_MAX ((int64_t)(INT64_C(9223372036854775807)))
228# endif
229# ifndef U_UINT64_MAX
231# define U_UINT64_MAX ((uint64_t)(UINT64_C(18446744073709551615)))
232# endif
233#endif
234
235/*==========================================================================*/
236/* Boolean data type */
237/*==========================================================================*/
238
247 typedef int8_t UBool;
248
261#ifdef U_DEFINE_FALSE_AND_TRUE
262 // Use the predefined value.
263#else
264 // Default to avoiding collision with non-macro definitions of FALSE & TRUE.
265# define U_DEFINE_FALSE_AND_TRUE 0
266#endif
267
268#if U_DEFINE_FALSE_AND_TRUE || defined(U_IN_DOXYGEN)
269#ifndef TRUE
275# define TRUE 1
276#endif
277#ifndef FALSE
283# define FALSE 0
284#endif
285#endif // U_DEFINE_FALSE_AND_TRUE
286
287/*==========================================================================*/
288/* Unicode data types */
289/*==========================================================================*/
290
291/* wchar_t-related definitions -------------------------------------------- */
292
293/*
294 * \def U_WCHAR_IS_UTF16
295 * Defined if wchar_t uses UTF-16.
296 *
297 * @stable ICU 2.0
298 */
299/*
300 * \def U_WCHAR_IS_UTF32
301 * Defined if wchar_t uses UTF-32.
302 *
303 * @stable ICU 2.0
304 */
305#if !defined(U_WCHAR_IS_UTF16) && !defined(U_WCHAR_IS_UTF32)
306# ifdef __STDC_ISO_10646__
307# if (U_SIZEOF_WCHAR_T==2)
308# define U_WCHAR_IS_UTF16
309# elif (U_SIZEOF_WCHAR_T==4)
310# define U_WCHAR_IS_UTF32
311# endif
312# elif defined __UCS2__
313# if (U_PF_OS390 <= U_PLATFORM && U_PLATFORM <= U_PF_OS400) && (U_SIZEOF_WCHAR_T==2)
314# define U_WCHAR_IS_UTF16
315# endif
316# elif defined(__UCS4__) || (U_PLATFORM == U_PF_OS400 && defined(__UTF32__))
317# if (U_SIZEOF_WCHAR_T==4)
318# define U_WCHAR_IS_UTF32
319# endif
320# elif U_PLATFORM_IS_DARWIN_BASED || (U_SIZEOF_WCHAR_T==4 && U_PLATFORM_IS_LINUX_BASED)
321# define U_WCHAR_IS_UTF32
322# elif U_PLATFORM_HAS_WIN32_API
323# define U_WCHAR_IS_UTF16
324# endif
325#endif
326
327/* UChar and UChar32 definitions -------------------------------------------- */
328
330#define U_SIZEOF_UCHAR 2
331
337#if defined(_MSC_VER) && (_MSC_VER < 1900)
338// Versions of Visual Studio/MSVC below 2015 do not support char16_t as a real type,
339// and instead use a typedef. https://msdn.microsoft.com/library/bb531344.aspx
340# define U_CHAR16_IS_TYPEDEF 1
341#else
342# define U_CHAR16_IS_TYPEDEF 0
343#endif
344
345
370#if 1
371 // #if 1 is normal. UChar defaults to char16_t in C++.
372 // For configuration testing of UChar=uint16_t temporarily change this to #if 0.
373 // The intltest Makefile #defines UCHAR_TYPE=char16_t,
374 // so we only #define it to uint16_t if it is undefined so far.
375#elif !defined(UCHAR_TYPE)
376# define UCHAR_TYPE uint16_t
377#endif
378
379#if defined(U_COMBINED_IMPLEMENTATION) || defined(U_COMMON_IMPLEMENTATION) || \
380 defined(U_I18N_IMPLEMENTATION) || defined(U_IO_IMPLEMENTATION)
381 // Inside the ICU library code, never configurable.
382 typedef char16_t UChar;
383#elif defined(UCHAR_TYPE)
384 typedef UCHAR_TYPE UChar;
385#elif U_CPLUSPLUS_VERSION != 0
386 typedef char16_t UChar; // C++
387#else
388 typedef uint16_t UChar; // C
389#endif
390
410#if U_SIZEOF_WCHAR_T==2
411 typedef wchar_t OldUChar;
412#elif defined(__CHAR16_TYPE__)
413 typedef __CHAR16_TYPE__ OldUChar;
414#else
415 typedef uint16_t OldUChar;
416#endif
417
435 typedef int32_t UChar32;
436
455#define U_SENTINEL (-1)
456
457#include "unicode/urename.h"
458
459#endif
ptypes.h
C API: Definitions of integer types of various widths.
UChar32
int32_t UChar32
Define UChar32 as a type for single Unicode code points.
Definition umachine.h:435
UBool
int8_t UBool
The ICU boolean type, a signed-byte integer.
Definition umachine.h:247
UChar
char16_t UChar
The base type for UTF-16 code units and pointers.
Definition umachine.h:386
OldUChar
uint16_t OldUChar
Default ICU 58 definition of UChar.
Definition umachine.h:415