1/*
2******************************************************************************
3*
4*   Copyright (C) 1999-2014, International Business Machines
5*   Corporation and others.  All Rights Reserved.
6*
7******************************************************************************
8*   file name:  umachine.h
9*   encoding:   US-ASCII
10*   tab size:   8 (not used)
11*   indentation:4
12*
13*   created on: 1999sep13
14*   created by: Markus W. Scherer
15*
16*   This file defines basic types and constants for ICU to be
17*   platform-independent. umachine.h and utf.h are included into
18*   utypes.h to provide all the general definitions for ICU.
19*   All of these definitions used to be in utypes.h before
20*   the UTF-handling macros made this unmaintainable.
21*/
22
23#ifndef __UMACHINE_H__
24#define __UMACHINE_H__
25
26
27/**
28 * \file
29 * \brief Basic types and constants for UTF
30 *
31 * <h2> Basic types and constants for UTF </h2>
32 *   This file defines basic types and constants for utf.h to be
33 *   platform-independent. umachine.h and utf.h are included into
34 *   utypes.h to provide all the general definitions for ICU.
35 *   All of these definitions used to be in utypes.h before
36 *   the UTF-handling macros made this unmaintainable.
37 *
38 */
39/*==========================================================================*/
40/* Include platform-dependent definitions                                   */
41/* which are contained in the platform-specific file platform.h             */
42/*==========================================================================*/
43
44#include "unicode/ptypes.h" /* platform.h is included in ptypes.h */
45
46/*
47 * ANSI C headers:
48 * stddef.h defines wchar_t
49 */
50#include <stddef.h>
51
52/*==========================================================================*/
53/* For C wrappers, we use the symbol U_STABLE.                                */
54/* This works properly if the includer is C or C++.                         */
55/* Functions are declared   U_STABLE return-type U_EXPORT2 function-name()... */
56/*==========================================================================*/
57
58/**
59 * \def U_CFUNC
60 * This is used in a declaration of a library private ICU C function.
61 * @stable ICU 2.4
62 */
63
64/**
65 * \def U_CDECL_BEGIN
66 * This is used to begin a declaration of a library private ICU C API.
67 * @stable ICU 2.4
68 */
69
70/**
71 * \def U_CDECL_END
72 * This is used to end a declaration of a library private ICU C API
73 * @stable ICU 2.4
74 */
75
76#ifdef __cplusplus
77#   define U_CFUNC extern "C"
78#   define U_CDECL_BEGIN extern "C" {
79#   define U_CDECL_END   }
80#else
81#   define U_CFUNC extern
82#   define U_CDECL_BEGIN
83#   define U_CDECL_END
84#endif
85
86#ifndef U_ATTRIBUTE_DEPRECATED
87/**
88 * \def U_ATTRIBUTE_DEPRECATED
89 *  This is used for GCC specific attributes
90 * @internal
91 */
92#if U_GCC_MAJOR_MINOR >= 302
93#    define U_ATTRIBUTE_DEPRECATED __attribute__ ((deprecated))
94/**
95 * \def U_ATTRIBUTE_DEPRECATED
96 * This is used for Visual C++ specific attributes
97 * @internal
98 */
99#elif defined(_MSC_VER) && (_MSC_VER >= 1400)
100#    define U_ATTRIBUTE_DEPRECATED __declspec(deprecated)
101#else
102#    define U_ATTRIBUTE_DEPRECATED
103#endif
104#endif
105
106/** This is used to declare a function as a public ICU C API @stable ICU 2.0*/
107#define U_CAPI U_CFUNC U_EXPORT
108/** This is used to declare a function as a stable public ICU C API*/
109#define U_STABLE U_CAPI
110/** This is used to declare a function as a draft public ICU C API  */
111#define U_DRAFT  U_CAPI
112/** This is used to declare a function as a deprecated public ICU C API  */
113#define U_DEPRECATED U_CAPI U_ATTRIBUTE_DEPRECATED
114/** This is used to declare a function as an obsolete public ICU C API  */
115#define U_OBSOLETE U_CAPI
116/** This is used to declare a function as an internal ICU C API  */
117#define U_INTERNAL U_CAPI
118
119/**
120 * \def U_OVERRIDE
121 * Defined to the C++11 "override" keyword if available.
122 * Denotes a class or member which is an override of the base class.
123 * May result in an error if it applied to something not an override.
124 * @internal
125 */
126
127/**
128 * \def U_FINAL
129 * Defined to the C++11 "final" keyword if available.
130 * Denotes a class or member which may not be overridden in subclasses.
131 * May result in an error if subclasses attempt to override.
132 * @internal
133 */
134
135#if defined(__cplusplus) && __cplusplus>=201103L
136/* C++11 */
137#ifndef U_OVERRIDE
138#define U_OVERRIDE override
139#endif
140#ifndef U_FINAL
141#define U_FINAL final
142#endif
143#else
144/* not C++11 - define to nothing */
145#ifndef U_OVERRIDE
146#define U_OVERRIDE
147#endif
148#ifndef U_FINAL
149#define U_FINAL
150#endif
151#endif
152
153/*==========================================================================*/
154/* limits for int32_t etc., like in POSIX inttypes.h                        */
155/*==========================================================================*/
156
157#ifndef INT8_MIN
158/** The smallest value an 8 bit signed integer can hold @stable ICU 2.0 */
159#   define INT8_MIN        ((int8_t)(-128))
160#endif
161#ifndef INT16_MIN
162/** The smallest value a 16 bit signed integer can hold @stable ICU 2.0 */
163#   define INT16_MIN       ((int16_t)(-32767-1))
164#endif
165#ifndef INT32_MIN
166/** The smallest value a 32 bit signed integer can hold @stable ICU 2.0 */
167#   define INT32_MIN       ((int32_t)(-2147483647-1))
168#endif
169
170#ifndef INT8_MAX
171/** The largest value an 8 bit signed integer can hold @stable ICU 2.0 */
172#   define INT8_MAX        ((int8_t)(127))
173#endif
174#ifndef INT16_MAX
175/** The largest value a 16 bit signed integer can hold @stable ICU 2.0 */
176#   define INT16_MAX       ((int16_t)(32767))
177#endif
178#ifndef INT32_MAX
179/** The largest value a 32 bit signed integer can hold @stable ICU 2.0 */
180#   define INT32_MAX       ((int32_t)(2147483647))
181#endif
182
183#ifndef UINT8_MAX
184/** The largest value an 8 bit unsigned integer can hold @stable ICU 2.0 */
185#   define UINT8_MAX       ((uint8_t)(255U))
186#endif
187#ifndef UINT16_MAX
188/** The largest value a 16 bit unsigned integer can hold @stable ICU 2.0 */
189#   define UINT16_MAX      ((uint16_t)(65535U))
190#endif
191#ifndef UINT32_MAX
192/** The largest value a 32 bit unsigned integer can hold @stable ICU 2.0 */
193#   define UINT32_MAX      ((uint32_t)(4294967295U))
194#endif
195
196#if defined(U_INT64_T_UNAVAILABLE)
197# error int64_t is required for decimal format and rule-based number format.
198#else
199# ifndef INT64_C
200/**
201 * Provides a platform independent way to specify a signed 64-bit integer constant.
202 * note: may be wrong for some 64 bit platforms - ensure your compiler provides INT64_C
203 * @stable ICU 2.8
204 */
205#   define INT64_C(c) c ## LL
206# endif
207# ifndef UINT64_C
208/**
209 * Provides a platform independent way to specify an unsigned 64-bit integer constant.
210 * note: may be wrong for some 64 bit platforms - ensure your compiler provides UINT64_C
211 * @stable ICU 2.8
212 */
213#   define UINT64_C(c) c ## ULL
214# endif
215# ifndef U_INT64_MIN
216/** The smallest value a 64 bit signed integer can hold @stable ICU 2.8 */
217#     define U_INT64_MIN       ((int64_t)(INT64_C(-9223372036854775807)-1))
218# endif
219# ifndef U_INT64_MAX
220/** The largest value a 64 bit signed integer can hold @stable ICU 2.8 */
221#     define U_INT64_MAX       ((int64_t)(INT64_C(9223372036854775807)))
222# endif
223# ifndef U_UINT64_MAX
224/** The largest value a 64 bit unsigned integer can hold @stable ICU 2.8 */
225#     define U_UINT64_MAX      ((uint64_t)(UINT64_C(18446744073709551615)))
226# endif
227#endif
228
229/*==========================================================================*/
230/* Boolean data type                                                        */
231/*==========================================================================*/
232
233/** The ICU boolean type @stable ICU 2.0 */
234typedef int8_t UBool;
235
236#ifndef TRUE
237/** The TRUE value of a UBool @stable ICU 2.0 */
238#   define TRUE  1
239#endif
240#ifndef FALSE
241/** The FALSE value of a UBool @stable ICU 2.0 */
242#   define FALSE 0
243#endif
244
245
246/*==========================================================================*/
247/* Unicode data types                                                       */
248/*==========================================================================*/
249
250/* wchar_t-related definitions -------------------------------------------- */
251
252/*
253 * \def U_WCHAR_IS_UTF16
254 * Defined if wchar_t uses UTF-16.
255 *
256 * @stable ICU 2.0
257 */
258/*
259 * \def U_WCHAR_IS_UTF32
260 * Defined if wchar_t uses UTF-32.
261 *
262 * @stable ICU 2.0
263 */
264#if !defined(U_WCHAR_IS_UTF16) && !defined(U_WCHAR_IS_UTF32)
265#   ifdef __STDC_ISO_10646__
266#       if (U_SIZEOF_WCHAR_T==2)
267#           define U_WCHAR_IS_UTF16
268#       elif (U_SIZEOF_WCHAR_T==4)
269#           define  U_WCHAR_IS_UTF32
270#       endif
271#   elif defined __UCS2__
272#       if (U_PF_OS390 <= U_PLATFORM && U_PLATFORM <= U_PF_OS400) && (U_SIZEOF_WCHAR_T==2)
273#           define U_WCHAR_IS_UTF16
274#       endif
275#   elif defined(__UCS4__) || (U_PLATFORM == U_PF_OS400 && defined(__UTF32__))
276#       if (U_SIZEOF_WCHAR_T==4)
277#           define U_WCHAR_IS_UTF32
278#       endif
279#   elif U_PLATFORM_IS_DARWIN_BASED || (U_SIZEOF_WCHAR_T==4 && U_PLATFORM_IS_LINUX_BASED)
280#       define U_WCHAR_IS_UTF32
281#   elif U_PLATFORM_HAS_WIN32_API
282#       define U_WCHAR_IS_UTF16
283#   endif
284#endif
285
286/* UChar and UChar32 definitions -------------------------------------------- */
287
288/** Number of bytes in a UChar. @stable ICU 2.0 */
289#define U_SIZEOF_UCHAR 2
290
291/**
292 * \var UChar
293 * Define UChar to be UCHAR_TYPE, if that is #defined (for example, to char16_t),
294 * or wchar_t if that is 16 bits wide; always assumed to be unsigned.
295 * If neither is available, then define UChar to be uint16_t.
296 *
297 * This makes the definition of UChar platform-dependent
298 * but allows direct string type compatibility with platforms with
299 * 16-bit wchar_t types.
300 *
301 * @stable ICU 4.4
302 */
303#if defined(UCHAR_TYPE)
304    typedef UCHAR_TYPE UChar;
305/* Not #elif U_HAVE_CHAR16_T -- because that is type-incompatible with pre-C++11 callers
306    typedef char16_t UChar;  */
307#elif U_SIZEOF_WCHAR_T==2
308    typedef wchar_t UChar;
309#elif defined(__CHAR16_TYPE__)
310    typedef __CHAR16_TYPE__ UChar;
311#else
312    typedef uint16_t UChar;
313#endif
314
315/**
316 * Define UChar32 as a type for single Unicode code points.
317 * UChar32 is a signed 32-bit integer (same as int32_t).
318 *
319 * The Unicode code point range is 0..0x10ffff.
320 * All other values (negative or >=0x110000) are illegal as Unicode code points.
321 * They may be used as sentinel values to indicate "done", "error"
322 * or similar non-code point conditions.
323 *
324 * Before ICU 2.4 (Jitterbug 2146), UChar32 was defined
325 * to be wchar_t if that is 32 bits wide (wchar_t may be signed or unsigned)
326 * or else to be uint32_t.
327 * That is, the definition of UChar32 was platform-dependent.
328 *
329 * @see U_SENTINEL
330 * @stable ICU 2.4
331 */
332typedef int32_t UChar32;
333
334/**
335 * This value is intended for sentinel values for APIs that
336 * (take or) return single code points (UChar32).
337 * It is outside of the Unicode code point range 0..0x10ffff.
338 *
339 * For example, a "done" or "error" value in a new API
340 * could be indicated with U_SENTINEL.
341 *
342 * ICU APIs designed before ICU 2.4 usually define service-specific "done"
343 * values, mostly 0xffff.
344 * Those may need to be distinguished from
345 * actual U+ffff text contents by calling functions like
346 * CharacterIterator::hasNext() or UnicodeString::length().
347 *
348 * @return -1
349 * @see UChar32
350 * @stable ICU 2.4
351 */
352#define U_SENTINEL (-1)
353
354#include "unicode/urename.h"
355
356#endif
357