ICU 78.2: common/unicode/umachine.h Source File

ICU 78.2 78.2

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
132 #ifdef U_FORCE_INLINE
133 // already defined
134 #elif defined(U_IN_DOXYGEN)
135 # define U_FORCE_INLINE inline
136 #elif (defined(__clang__) && __clang__) || U_GCC_MAJOR_MINOR != 0
137 # define U_FORCE_INLINE [[gnu::always_inline]]
138 #elif defined(U_REAL_MSVC)
139 # define U_FORCE_INLINE __forceinline
140 #else
141 # define U_FORCE_INLINE inline
142 #endif
143
144 // Before ICU 65, function-like, multi-statement ICU macros were just defined as
145 // series of statements wrapped in { } blocks and the caller could choose to
146 // either treat them as if they were actual functions and end the invocation
147 // with a trailing ; creating an empty statement after the block or else omit
148 // this trailing ; using the knowledge that the macro would expand to { }.
149 //
150 // But doing so doesn't work well with macros that look like functions and
151 // compiler warnings about empty statements (ICU-20601) and ICU 65 therefore
152 // switches to the standard solution of wrapping such macros in do { } while.
153 //
154 // This will however break existing code that depends on being able to invoke
155 // these macros without a trailing ; so to be able to remain compatible with
156 // such code the wrapper is itself defined as macros so that it's possible to
157 // build ICU 65 and later with the old macro behaviour, like this:
158 //
159 // export CPPFLAGS='-DUPRV_BLOCK_MACRO_BEGIN="" -DUPRV_BLOCK_MACRO_END=""'
160 // runConfigureICU ...
161 //
162
168 #ifndef UPRV_BLOCK_MACRO_BEGIN
169 #define UPRV_BLOCK_MACRO_BEGIN do
170 #endif
171
177 #ifndef UPRV_BLOCK_MACRO_END
178 #define UPRV_BLOCK_MACRO_END while (false)
179 #endif
180
181 /*==========================================================================*/
182 /* limits for int32_t etc., like in POSIX inttypes.h */
183 /*==========================================================================*/
184
185 #ifndef INT8_MIN
187 # define INT8_MIN ((int8_t)(-128))
188 #endif
189 #ifndef INT16_MIN
191 # define INT16_MIN ((int16_t)(-32767-1))
192 #endif
193 #ifndef INT32_MIN
195 # define INT32_MIN ((int32_t)(-2147483647-1))
196 #endif
197
198 #ifndef INT8_MAX
200 # define INT8_MAX ((int8_t)(127))
201 #endif
202 #ifndef INT16_MAX
204 # define INT16_MAX ((int16_t)(32767))
205 #endif
206 #ifndef INT32_MAX
208 # define INT32_MAX ((int32_t)(2147483647))
209 #endif
210
211 #ifndef UINT8_MAX
213 # define UINT8_MAX ((uint8_t)(255U))
214 #endif
215 #ifndef UINT16_MAX
217 # define UINT16_MAX ((uint16_t)(65535U))
218 #endif
219 #ifndef UINT32_MAX
221 # define UINT32_MAX ((uint32_t)(4294967295U))
222 #endif
223
224 #if defined(U_INT64_T_UNAVAILABLE)
225 # error int64_t is required for decimal format and rule-based number format.
226 #else
227 # ifndef INT64_C
233 # define INT64_C(c) c ## LL
234 # endif
235 # ifndef UINT64_C
241 # define UINT64_C(c) c ## ULL
242 # endif
243 # ifndef U_INT64_MIN
245 # define U_INT64_MIN ((int64_t)(INT64_C(-9223372036854775807)-1))
246 # endif
247 # ifndef U_INT64_MAX
249 # define U_INT64_MAX ((int64_t)(INT64_C(9223372036854775807)))
250 # endif
251 # ifndef U_UINT64_MAX
253 # define U_UINT64_MAX ((uint64_t)(UINT64_C(18446744073709551615)))
254 # endif
255 #endif
256
257 /*==========================================================================*/
258 /* Boolean data type */
259 /*==========================================================================*/
260
269 typedef int8_t UBool;
270
283 #ifdef U_DEFINE_FALSE_AND_TRUE
284 // Use the predefined value.
285 #else
286 // Default to avoiding collision with non-macro definitions of FALSE & TRUE.
287 # define U_DEFINE_FALSE_AND_TRUE 0
288 #endif
289
290 #if U_DEFINE_FALSE_AND_TRUE || defined(U_IN_DOXYGEN)
291 #ifndef TRUE
297 # define TRUE 1
298 #endif
299 #ifndef FALSE
305 # define FALSE 0
306 #endif
307 #endif // U_DEFINE_FALSE_AND_TRUE
308
309 /*==========================================================================*/
310 /* Unicode data types */
311 /*==========================================================================*/
312
313 /* wchar_t-related definitions -------------------------------------------- */
314
315 /*
316 * \def U_WCHAR_IS_UTF16
317 * Defined if wchar_t uses UTF-16.
318 *
319 * @stable ICU 2.0
320 */
321 /*
322 * \def U_WCHAR_IS_UTF32
323 * Defined if wchar_t uses UTF-32.
324 *
325 * @stable ICU 2.0
326 */
327 #if !defined(U_WCHAR_IS_UTF16) && !defined(U_WCHAR_IS_UTF32)
328 # ifdef __STDC_ISO_10646__
329 # if (U_SIZEOF_WCHAR_T==2)
330 # define U_WCHAR_IS_UTF16
331 # elif (U_SIZEOF_WCHAR_T==4)
332 # define U_WCHAR_IS_UTF32
333 # endif
334 # elif defined __UCS2__
335 # if (U_PF_OS390 <= U_PLATFORM && U_PLATFORM <= U_PF_OS400) && (U_SIZEOF_WCHAR_T==2)
336 # define U_WCHAR_IS_UTF16
337 # endif
338 # elif defined(__UCS4__) || (U_PLATFORM == U_PF_OS400 && defined(__UTF32__))
339 # if (U_SIZEOF_WCHAR_T==4)
340 # define U_WCHAR_IS_UTF32
341 # endif
342 # elif U_PLATFORM_IS_DARWIN_BASED || (U_SIZEOF_WCHAR_T==4 && U_PLATFORM_IS_LINUX_BASED)
343 # define U_WCHAR_IS_UTF32
344 # elif U_PLATFORM_HAS_WIN32_API
345 # define U_WCHAR_IS_UTF16
346 # endif
347 #endif
348
349 /* UChar and UChar32 definitions -------------------------------------------- */
350
352 #define U_SIZEOF_UCHAR 2
353
359 #if defined(_MSC_VER) && (_MSC_VER < 1900)
360 // Versions of Visual Studio/MSVC below 2015 do not support char16_t as a real type,
361 // and instead use a typedef. https://msdn.microsoft.com/library/bb531344.aspx
362 # define U_CHAR16_IS_TYPEDEF 1
363 #else
364 # define U_CHAR16_IS_TYPEDEF 0
365 #endif
366
367
392 #if 1
393 // #if 1 is normal. UChar defaults to char16_t in C++.
394 // For configuration testing of UChar=uint16_t temporarily change this to #if 0.
395 #else
396 # define UCHAR_TYPE uint16_t
397 #endif
398
399 #if defined(U_ALL_IMPLEMENTATION) || !defined(UCHAR_TYPE)
400 typedef char16_t UChar;
401 #else
402 typedef UCHAR_TYPE UChar;
403 #endif
404
424 #if U_SIZEOF_WCHAR_T==2
425 typedef wchar_t OldUChar;
426 #elif defined(__CHAR16_TYPE__)
427 typedef __CHAR16_TYPE__ OldUChar;
428 #else
429 typedef uint16_t OldUChar;
430 #endif
431
449 typedef int32_t UChar32;
450
469 #define U_SENTINEL (-1)
470
471 #include "unicode/urename.h"
472
473 #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:449
UBool
int8_t UBool
The ICU boolean type, a signed-byte integer.
Definition: umachine.h:269
UChar
char16_t UChar
The base type for UTF-16 code units and pointers.
Definition: umachine.h:400
OldUChar
uint16_t OldUChar
Default ICU 58 definition of UChar.
Definition: umachine.h:429