aboutsummaryrefslogtreecommitdiffstats
path: root/contrib/libs/icu/include/unicode/utf_old.h
blob: b2428e6b31e28273c68180465dd545e0bb914d17 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
*
*   Copyright (C) 2002-2012, International Business Machines
*   Corporation and others.  All Rights Reserved.
*
*******************************************************************************
*   file name:  utf_old.h
*   encoding:   UTF-8
*   tab size:   8 (not used)
*   indentation:4
*
*   created on: 2002sep21
*   created by: Markus W. Scherer
*/

/**
 * \file
 * \brief C API: Deprecated macros for Unicode string handling
 *
 * The macros in utf_old.h are all deprecated and their use discouraged.
 * Some of the design principles behind the set of UTF macros
 * have changed or proved impractical.
 * Almost all of the old "UTF macros" are at least renamed.
 * If you are looking for a new equivalent to an old macro, please see the
 * comment at the old one.
 *
 * Brief summary of reasons for deprecation:
 * - Switch on UTF_SIZE (selection of UTF-8/16/32 default string processing)
 *   was impractical.
 * - Switch on UTF_SAFE etc. (selection of unsafe/safe/strict default string processing)
 *   was of little use and impractical.
 * - Whole classes of macros became obsolete outside of the UTF_SIZE/UTF_SAFE
 *   selection framework: UTF32_ macros (all trivial)
 *   and UTF_ default and intermediate macros (all aliases).
 * - The selection framework also caused many macro aliases.
 * - Change in Unicode standard: "irregular" sequences (3.0) became illegal (3.2).
 * - Change of language in Unicode standard:
 *   Growing distinction between internal x-bit Unicode strings and external UTF-x
 *   forms, with the former more lenient.
 *   Suggests renaming of UTF16_ macros to U16_.
 * - The prefix "UTF_" without a width number confused some users.
 * - "Safe" append macros needed the addition of an error indicator output.
 * - "Safe" UTF-8 macros used legitimate (if rarely used) code point values
 *   to indicate error conditions.
 * - The use of the "_CHAR" infix for code point operations confused some users.
 *
 * More details:
 *
 * Until ICU 2.2, utf.h theoretically allowed to choose among UTF-8/16/32
 * for string processing, and among unsafe/safe/strict default macros for that.
 *
 * It proved nearly impossible to write non-trivial, high-performance code
 * that is UTF-generic.
 * Unsafe default macros would be dangerous for default string processing,
 * and the main reason for the "strict" versions disappeared:
 * Between Unicode 3.0 and 3.2 all "irregular" UTF-8 sequences became illegal.
 * The only other conditions that "strict" checked for were non-characters,
 * which are valid during processing. Only during text input/output should they
 * be checked, and at that time other well-formedness checks may be
 * necessary or useful as well.
 * This can still be done by using U16_NEXT and U_IS_UNICODE_NONCHAR
 * or U_IS_UNICODE_CHAR.
 *
 * The old UTF8_..._SAFE macros also used some normal Unicode code points
 * to indicate malformed sequences.
 * The new UTF8_ macros without suffix use negative values instead.
 *
 * The entire contents of utf32.h was moved here without replacement
 * because all those macros were trivial and
 * were meaningful only in the framework of choosing the UTF size.
 *
 * See Jitterbug 2150 and its discussion on the ICU mailing list
 * in September 2002.
 *
 * <hr>
 *
 * <em>Obsolete part</em> of pre-ICU 2.4 utf.h file documentation:
 *
 * <p>The original concept for these files was for ICU to allow
 * in principle to set which UTF (UTF-8/16/32) is used internally
 * by defining UTF_SIZE to either 8, 16, or 32. utf.h would then define the UChar type
 * accordingly. UTF-16 was the default.</p>
 *
 * <p>This concept has been abandoned.
 * A lot of the ICU source code assumes UChar strings are in UTF-16.
 * This is especially true for low-level code like
 * conversion, normalization, and collation.
 * The utf.h header enforces the default of UTF-16.
 * The UTF-8 and UTF-32 macros remain for now for completeness and backward compatibility.</p>
 *
 * <p>Accordingly, utf.h defines UChar to be an unsigned 16-bit integer. If this matches wchar_t, then
 * UChar is defined to be exactly wchar_t, otherwise uint16_t.</p>
 *
 * <p>UChar32 is defined to be a signed 32-bit integer (int32_t), large enough for a 21-bit
 * Unicode code point (Unicode scalar value, 0..0x10ffff).
 * Before ICU 2.4, the definition of UChar32 was similarly platform-dependent as
 * the definition of UChar. For details see the documentation for UChar32 itself.</p>
 *
 * <p>utf.h also defines a number of C macros for handling single Unicode code points and
 * for using UTF Unicode strings. It includes utf8.h, utf16.h, and utf32.h for the actual
 * implementations of those macros and then aliases one set of them (for UTF-16) for general use.
 * The UTF-specific macros have the UTF size in the macro name prefixes (UTF16_...), while
 * the general alias macros always begin with UTF_...</p>
 *
 * <p>Many string operations can be done with or without error checking.
 * Where such a distinction is useful, there are two versions of the macros, "unsafe" and "safe"
 * ones with ..._UNSAFE and ..._SAFE suffixes. The unsafe macros are fast but may cause
 * program failures if the strings are not well-formed. The safe macros have an additional, boolean
 * parameter "strict". If strict is FALSE, then only illegal sequences are detected.
 * Otherwise, irregular sequences and non-characters are detected as well (like single surrogates).
 * Safe macros return special error code points for illegal/irregular sequences:
 * Typically, U+ffff, or values that would result in a code unit sequence of the same length
 * as the erroneous input sequence.<br>
 * Note that _UNSAFE macros have fewer parameters: They do not have the strictness parameter, and
 * they do not have start/length parameters for boundary checking.</p>
 *
 * <p>Here, the macros are aliased in two steps:
 * In the first step, the UTF-specific macros with UTF16_ prefix and _UNSAFE and _SAFE suffixes are
 * aliased according to the UTF_SIZE to macros with UTF_ prefix and the same suffixes and signatures.
 * Then, in a second step, the default, general alias macros are set to use either the unsafe or
 * the safe/not strict (default) or the safe/strict macro;
 * these general macros do not have a strictness parameter.</p>
 *
 * <p>It is possible to change the default choice for the general alias macros to be unsafe, safe/not strict or safe/strict.
 * The default is safe/not strict. It is not recommended to select the unsafe macros as the basis for
 * Unicode string handling in ICU! To select this, define UTF_SAFE, UTF_STRICT, or UTF_UNSAFE.</p>
 *
 * <p>For general use, one should use the default, general macros with UTF_ prefix and no _SAFE/_UNSAFE suffix.
 * Only in some cases it may be necessary to control the choice of macro directly and use a less generic alias.
 * For example, if it can be assumed that a string is well-formed and the index will stay within the bounds,
 * then the _UNSAFE version may be used.
 * If a UTF-8 string is to be processed, then the macros with UTF8_ prefixes need to be used.</p>
 *
 * <hr>
 *
 * Deprecated ICU 2.4. Use the macros in utf.h, utf16.h, utf8.h instead.
 */

#ifndef __UTF_OLD_H__
#define __UTF_OLD_H__

#include "unicode/utf.h"
#include "unicode/utf8.h"
#include "unicode/utf16.h"

/**
 * \def U_HIDE_OBSOLETE_UTF_OLD_H
 *
 * Hides the obsolete definitions in unicode/utf_old.h.
 * Recommended to be set to 1 at compile time to make sure
 * the long-deprecated macros are no longer used.
 *
 * For reasons for the deprecation see the utf_old.h file comments.
 *
 * @internal
 */
#ifndef U_HIDE_OBSOLETE_UTF_OLD_H
#   define U_HIDE_OBSOLETE_UTF_OLD_H 0
#endif

#if !defined(U_HIDE_DEPRECATED_API) && !U_HIDE_OBSOLETE_UTF_OLD_H

/* Formerly utf.h, part 1 --------------------------------------------------- */

#ifdef U_USE_UTF_DEPRECATES
/**
 * Unicode string and array offset and index type.
 * ICU always counts Unicode code units (UChars) for
 * string offsets, indexes, and lengths, not Unicode code points.
 *
 * @obsolete ICU 2.6. Use int32_t directly instead since this API will be removed in that release.
 */
typedef int32_t UTextOffset;
#endif

/** Number of bits in a Unicode string code unit - ICU uses 16-bit Unicode. @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF_SIZE 16

/**
 * The default choice for general Unicode string macros is to use the ..._SAFE macro implementations
 * with strict=FALSE.
 *
 * @deprecated ICU 2.4. Obsolete, see utf_old.h.
 */
#define UTF_SAFE
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#undef UTF_UNSAFE
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#undef UTF_STRICT

/**
 * UTF8_ERROR_VALUE_1 and UTF8_ERROR_VALUE_2 are special error values for UTF-8,
 * which need 1 or 2 bytes in UTF-8:
 * \code
 * U+0015 = NAK = Negative Acknowledge, C0 control character
 * U+009f = highest C1 control character
 * \endcode
 *
 * These are used by UTF8_..._SAFE macros so that they can return an error value
 * that needs the same number of code units (bytes) as were seen by
 * a macro. They should be tested with UTF_IS_ERROR() or UTF_IS_VALID().
 *
 * @deprecated ICU 2.4. Obsolete, see utf_old.h.
 */
#define UTF8_ERROR_VALUE_1 0x15

/**
 * See documentation on UTF8_ERROR_VALUE_1 for details.
 *
 * @deprecated ICU 2.4. Obsolete, see utf_old.h.
 */
#define UTF8_ERROR_VALUE_2 0x9f

/**
 * Error value for all UTFs. This code point value will be set by macros with error
 * checking if an error is detected.
 *
 * @deprecated ICU 2.4. Obsolete, see utf_old.h.
 */
#define UTF_ERROR_VALUE 0xffff

/**
 * Is a given 32-bit code an error value
 * as returned by one of the macros for any UTF?
 *
 * @deprecated ICU 2.4. Obsolete, see utf_old.h.
 */
#define UTF_IS_ERROR(c) \
    (((c)&0xfffe)==0xfffe || (c)==UTF8_ERROR_VALUE_1 || (c)==UTF8_ERROR_VALUE_2)

/**
 * This is a combined macro: Is c a valid Unicode value _and_ not an error code?
 *
 * @deprecated ICU 2.4. Obsolete, see utf_old.h.
 */
#define UTF_IS_VALID(c) \
    (UTF_IS_UNICODE_CHAR(c) && \
     (c)!=UTF8_ERROR_VALUE_1 && (c)!=UTF8_ERROR_VALUE_2)

/**
 * Is this code unit or code point a surrogate (U+d800..U+dfff)?
 * @deprecated ICU 2.4. Renamed to U_IS_SURROGATE and U16_IS_SURROGATE, see utf_old.h.
 */
#define UTF_IS_SURROGATE(uchar) (((uchar)&0xfffff800)==0xd800)

/**
 * Is a given 32-bit code point a Unicode noncharacter?
 *
 * @deprecated ICU 2.4. Renamed to U_IS_UNICODE_NONCHAR, see utf_old.h.
 */
#define UTF_IS_UNICODE_NONCHAR(c) \
    ((c)>=0xfdd0 && \
     ((uint32_t)(c)<=0xfdef || ((c)&0xfffe)==0xfffe) && \
     (uint32_t)(c)<=0x10ffff)

/**
 * Is a given 32-bit value a Unicode code point value (0..U+10ffff)
 * that can be assigned a character?
 *
 * Code points that are not characters include:
 * - single surrogate code points (U+d800..U+dfff, 2048 code points)
 * - the last two code points on each plane (U+__fffe and U+__ffff, 34 code points)
 * - U+fdd0..U+fdef (new with Unicode 3.1, 32 code points)
 * - the highest Unicode code point value is U+10ffff
 *
 * This means that all code points below U+d800 are character code points,
 * and that boundary is tested first for performance.
 *
 * @deprecated ICU 2.4. Renamed to U_IS_UNICODE_CHAR, see utf_old.h.
 */
#define UTF_IS_UNICODE_CHAR(c) \
    ((uint32_t)(c)<0xd800 || \
        ((uint32_t)(c)>0xdfff && \
         (uint32_t)(c)<=0x10ffff && \
         !UTF_IS_UNICODE_NONCHAR(c)))

/* Formerly utf8.h ---------------------------------------------------------- */

/**
* \var utf8_countTrailBytes
* Internal array with numbers of trail bytes for any given byte used in
* lead byte position.
*
* This is internal since it is not meant to be called directly by external clients;
* however it is called by public macros in this file and thus must remain stable,
* and should not be hidden when other internal functions are hidden (otherwise
* public macros would fail to compile).
* @internal
*/
#ifdef U_UTF8_IMPL
// No forward declaration if compiling utf_impl.cpp, which defines utf8_countTrailBytes.
#elif defined(U_STATIC_IMPLEMENTATION) || defined(U_COMMON_IMPLEMENTATION)
U_CFUNC const uint8_t utf8_countTrailBytes[];
#else
U_CFUNC U_IMPORT const uint8_t utf8_countTrailBytes[];    /* U_IMPORT2? */ /*U_IMPORT*/
#endif

/**
 * Count the trail bytes for a UTF-8 lead byte.
 * @deprecated ICU 2.4. Renamed to U8_COUNT_TRAIL_BYTES, see utf_old.h.
 */
#define UTF8_COUNT_TRAIL_BYTES(leadByte) (utf8_countTrailBytes[(uint8_t)leadByte])

/**
 * Mask a UTF-8 lead byte, leave only the lower bits that form part of the code point value.
 * @deprecated ICU 2.4. Renamed to U8_MASK_LEAD_BYTE, see utf_old.h.
 */
#define UTF8_MASK_LEAD_BYTE(leadByte, countTrailBytes) ((leadByte)&=(1<<(6-(countTrailBytes)))-1)

/** Is this this code point a single code unit (byte)? @deprecated ICU 2.4. Renamed to U8_IS_SINGLE, see utf_old.h. */
#define UTF8_IS_SINGLE(uchar) (((uchar)&0x80)==0)
/** Is this this code unit the lead code unit (byte) of a code point? @deprecated ICU 2.4. Renamed to U8_IS_LEAD, see utf_old.h. */
#define UTF8_IS_LEAD(uchar) ((uint8_t)((uchar)-0xc0)<0x3e)
/** Is this this code unit a trailing code unit (byte) of a code point? @deprecated ICU 2.4. Renamed to U8_IS_TRAIL, see utf_old.h. */
#define UTF8_IS_TRAIL(uchar) (((uchar)&0xc0)==0x80)

/** Does this scalar Unicode value need multiple code units for storage? @deprecated ICU 2.4. Use U8_LENGTH or test ((uint32_t)(c)>0x7f) instead, see utf_old.h. */
#define UTF8_NEED_MULTIPLE_UCHAR(c) ((uint32_t)(c)>0x7f)

/**
 * Given the lead character, how many bytes are taken by this code point.
 * ICU does not deal with code points >0x10ffff
 * unless necessary for advancing in the byte stream.
 *
 * These length macros take into account that for values >0x10ffff
 * the UTF8_APPEND_CHAR_SAFE macros would write the error code point 0xffff
 * with 3 bytes.
 * Code point comparisons need to be in uint32_t because UChar32
 * may be a signed type, and negative values must be recognized.
 *
 * @deprecated ICU 2.4. Use U8_LENGTH instead, see utf.h.
 */
#if 1
#   define UTF8_CHAR_LENGTH(c) \
        ((uint32_t)(c)<=0x7f ? 1 : \
            ((uint32_t)(c)<=0x7ff ? 2 : \
                ((uint32_t)((c)-0x10000)>0xfffff ? 3 : 4) \
            ) \
        )
#else
#   define UTF8_CHAR_LENGTH(c) \
        ((uint32_t)(c)<=0x7f ? 1 : \
            ((uint32_t)(c)<=0x7ff ? 2 : \
                ((uint32_t)(c)<=0xffff ? 3 : \
                    ((uint32_t)(c)<=0x10ffff ? 4 : \
                        ((uint32_t)(c)<=0x3ffffff ? 5 : \
                            ((uint32_t)(c)<=0x7fffffff ? 6 : 3) \
                        ) \
                    ) \
                ) \
            ) \
        )
#endif

/** The maximum number of bytes per code point. @deprecated ICU 2.4. Renamed to U8_MAX_LENGTH, see utf_old.h. */
#define UTF8_MAX_CHAR_LENGTH 4

/** Average number of code units compared to UTF-16. @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF8_ARRAY_SIZE(size) ((5*(size))/2)

/** @deprecated ICU 2.4. Renamed to U8_GET_UNSAFE, see utf_old.h. */
#define UTF8_GET_CHAR_UNSAFE(s, i, c) UPRV_BLOCK_MACRO_BEGIN { \
    int32_t _utf8_get_char_unsafe_index=(int32_t)(i); \
    UTF8_SET_CHAR_START_UNSAFE(s, _utf8_get_char_unsafe_index); \
    UTF8_NEXT_CHAR_UNSAFE(s, _utf8_get_char_unsafe_index, c); \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Use U8_GET instead, see utf_old.h. */
#define UTF8_GET_CHAR_SAFE(s, start, i, length, c, strict) UPRV_BLOCK_MACRO_BEGIN { \
    int32_t _utf8_get_char_safe_index=(int32_t)(i); \
    UTF8_SET_CHAR_START_SAFE(s, start, _utf8_get_char_safe_index); \
    UTF8_NEXT_CHAR_SAFE(s, _utf8_get_char_safe_index, length, c, strict); \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Renamed to U8_NEXT_UNSAFE, see utf_old.h. */
#define UTF8_NEXT_CHAR_UNSAFE(s, i, c) UPRV_BLOCK_MACRO_BEGIN { \
    (c)=(s)[(i)++]; \
    if((uint8_t)((c)-0xc0)<0x35) { \
        uint8_t __count=UTF8_COUNT_TRAIL_BYTES(c); \
        UTF8_MASK_LEAD_BYTE(c, __count); \
        switch(__count) { \
        /* each following branch falls through to the next one */ \
        case 3: \
            (c)=((c)<<6)|((s)[(i)++]&0x3f); \
        case 2: \
            (c)=((c)<<6)|((s)[(i)++]&0x3f); \
        case 1: \
            (c)=((c)<<6)|((s)[(i)++]&0x3f); \
        /* no other branches to optimize switch() */ \
            break; \
        } \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Renamed to U8_APPEND_UNSAFE, see utf_old.h. */
#define UTF8_APPEND_CHAR_UNSAFE(s, i, c) UPRV_BLOCK_MACRO_BEGIN { \
    if((uint32_t)(c)<=0x7f) { \
        (s)[(i)++]=(uint8_t)(c); \
    } else { \
        if((uint32_t)(c)<=0x7ff) { \
            (s)[(i)++]=(uint8_t)(((c)>>6)|0xc0); \
        } else { \
            if((uint32_t)(c)<=0xffff) { \
                (s)[(i)++]=(uint8_t)(((c)>>12)|0xe0); \
            } else { \
                (s)[(i)++]=(uint8_t)(((c)>>18)|0xf0); \
                (s)[(i)++]=(uint8_t)((((c)>>12)&0x3f)|0x80); \
            } \
            (s)[(i)++]=(uint8_t)((((c)>>6)&0x3f)|0x80); \
        } \
        (s)[(i)++]=(uint8_t)(((c)&0x3f)|0x80); \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Renamed to U8_FWD_1_UNSAFE, see utf_old.h. */
#define UTF8_FWD_1_UNSAFE(s, i) UPRV_BLOCK_MACRO_BEGIN { \
    (i)+=1+UTF8_COUNT_TRAIL_BYTES((s)[i]); \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Renamed to U8_FWD_N_UNSAFE, see utf_old.h. */
#define UTF8_FWD_N_UNSAFE(s, i, n) UPRV_BLOCK_MACRO_BEGIN { \
    int32_t __N=(n); \
    while(__N>0) { \
        UTF8_FWD_1_UNSAFE(s, i); \
        --__N; \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Renamed to U8_SET_CP_START_UNSAFE, see utf_old.h. */
#define UTF8_SET_CHAR_START_UNSAFE(s, i) UPRV_BLOCK_MACRO_BEGIN { \
    while(UTF8_IS_TRAIL((s)[i])) { --(i); } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Use U8_NEXT instead, see utf_old.h. */
#define UTF8_NEXT_CHAR_SAFE(s, i, length, c, strict) UPRV_BLOCK_MACRO_BEGIN { \
    (c)=(s)[(i)++]; \
    if((c)>=0x80) { \
        if(UTF8_IS_LEAD(c)) { \
            (c)=utf8_nextCharSafeBody(s, &(i), (int32_t)(length), c, strict); \
        } else { \
            (c)=UTF8_ERROR_VALUE_1; \
        } \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Use U8_APPEND instead, see utf_old.h. */
#define UTF8_APPEND_CHAR_SAFE(s, i, length, c)  UPRV_BLOCK_MACRO_BEGIN { \
    if((uint32_t)(c)<=0x7f) { \
        (s)[(i)++]=(uint8_t)(c); \
    } else { \
        (i)=utf8_appendCharSafeBody(s, (int32_t)(i), (int32_t)(length), c, NULL); \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Renamed to U8_FWD_1, see utf_old.h. */
#define UTF8_FWD_1_SAFE(s, i, length) U8_FWD_1(s, i, length)

/** @deprecated ICU 2.4. Renamed to U8_FWD_N, see utf_old.h. */
#define UTF8_FWD_N_SAFE(s, i, length, n) U8_FWD_N(s, i, length, n)

/** @deprecated ICU 2.4. Renamed to U8_SET_CP_START, see utf_old.h. */
#define UTF8_SET_CHAR_START_SAFE(s, start, i) U8_SET_CP_START(s, start, i)

/** @deprecated ICU 2.4. Renamed to U8_PREV_UNSAFE, see utf_old.h. */
#define UTF8_PREV_CHAR_UNSAFE(s, i, c) UPRV_BLOCK_MACRO_BEGIN { \
    (c)=(s)[--(i)]; \
    if(UTF8_IS_TRAIL(c)) { \
        uint8_t __b, __count=1, __shift=6; \
\
        /* c is a trail byte */ \
        (c)&=0x3f; \
        for(;;) { \
            __b=(s)[--(i)]; \
            if(__b>=0xc0) { \
                UTF8_MASK_LEAD_BYTE(__b, __count); \
                (c)|=(UChar32)__b<<__shift; \
                break; \
            } else { \
                (c)|=(UChar32)(__b&0x3f)<<__shift; \
                ++__count; \
                __shift+=6; \
            } \
        } \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Renamed to U8_BACK_1_UNSAFE, see utf_old.h. */
#define UTF8_BACK_1_UNSAFE(s, i) UPRV_BLOCK_MACRO_BEGIN { \
    while(UTF8_IS_TRAIL((s)[--(i)])) {} \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Renamed to U8_BACK_N_UNSAFE, see utf_old.h. */
#define UTF8_BACK_N_UNSAFE(s, i, n) UPRV_BLOCK_MACRO_BEGIN { \
    int32_t __N=(n); \
    while(__N>0) { \
        UTF8_BACK_1_UNSAFE(s, i); \
        --__N; \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Renamed to U8_SET_CP_LIMIT_UNSAFE, see utf_old.h. */
#define UTF8_SET_CHAR_LIMIT_UNSAFE(s, i) UPRV_BLOCK_MACRO_BEGIN { \
    UTF8_BACK_1_UNSAFE(s, i); \
    UTF8_FWD_1_UNSAFE(s, i); \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Use U8_PREV instead, see utf_old.h. */
#define UTF8_PREV_CHAR_SAFE(s, start, i, c, strict) UPRV_BLOCK_MACRO_BEGIN { \
    (c)=(s)[--(i)]; \
    if((c)>=0x80) { \
        if((c)<=0xbf) { \
            (c)=utf8_prevCharSafeBody(s, start, &(i), c, strict); \
        } else { \
            (c)=UTF8_ERROR_VALUE_1; \
        } \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Renamed to U8_BACK_1, see utf_old.h. */
#define UTF8_BACK_1_SAFE(s, start, i) U8_BACK_1(s, start, i)

/** @deprecated ICU 2.4. Renamed to U8_BACK_N, see utf_old.h. */
#define UTF8_BACK_N_SAFE(s, start, i, n) U8_BACK_N(s, start, i, n)

/** @deprecated ICU 2.4. Renamed to U8_SET_CP_LIMIT, see utf_old.h. */
#define UTF8_SET_CHAR_LIMIT_SAFE(s, start, i, length) U8_SET_CP_LIMIT(s, start, i, length)

/* Formerly utf16.h --------------------------------------------------------- */

/** Is uchar a first/lead surrogate? @deprecated ICU 2.4. Renamed to U_IS_LEAD and U16_IS_LEAD, see utf_old.h. */
#define UTF_IS_FIRST_SURROGATE(uchar) (((uchar)&0xfffffc00)==0xd800)

/** Is uchar a second/trail surrogate? @deprecated ICU 2.4. Renamed to U_IS_TRAIL and U16_IS_TRAIL, see utf_old.h. */
#define UTF_IS_SECOND_SURROGATE(uchar) (((uchar)&0xfffffc00)==0xdc00)

/** Assuming c is a surrogate, is it a first/lead surrogate? @deprecated ICU 2.4. Renamed to U_IS_SURROGATE_LEAD and U16_IS_SURROGATE_LEAD, see utf_old.h. */
#define UTF_IS_SURROGATE_FIRST(c) (((c)&0x400)==0)

/** Helper constant for UTF16_GET_PAIR_VALUE. @deprecated ICU 2.4. Renamed to U16_SURROGATE_OFFSET, see utf_old.h. */
#define UTF_SURROGATE_OFFSET ((0xd800<<10UL)+0xdc00-0x10000)

/** Get the UTF-32 value from the surrogate code units. @deprecated ICU 2.4. Renamed to U16_GET_SUPPLEMENTARY, see utf_old.h. */
#define UTF16_GET_PAIR_VALUE(first, second) \
    (((first)<<10UL)+(second)-UTF_SURROGATE_OFFSET)

/** @deprecated ICU 2.4. Renamed to U16_LEAD, see utf_old.h. */
#define UTF_FIRST_SURROGATE(supplementary) (UChar)(((supplementary)>>10)+0xd7c0)

/** @deprecated ICU 2.4. Renamed to U16_TRAIL, see utf_old.h. */
#define UTF_SECOND_SURROGATE(supplementary) (UChar)(((supplementary)&0x3ff)|0xdc00)

/** @deprecated ICU 2.4. Renamed to U16_LEAD, see utf_old.h. */
#define UTF16_LEAD(supplementary) UTF_FIRST_SURROGATE(supplementary)

/** @deprecated ICU 2.4. Renamed to U16_TRAIL, see utf_old.h. */
#define UTF16_TRAIL(supplementary) UTF_SECOND_SURROGATE(supplementary)

/** @deprecated ICU 2.4. Renamed to U16_IS_SINGLE, see utf_old.h. */
#define UTF16_IS_SINGLE(uchar) !UTF_IS_SURROGATE(uchar)

/** @deprecated ICU 2.4. Renamed to U16_IS_LEAD, see utf_old.h. */
#define UTF16_IS_LEAD(uchar) UTF_IS_FIRST_SURROGATE(uchar)

/** @deprecated ICU 2.4. Renamed to U16_IS_TRAIL, see utf_old.h. */
#define UTF16_IS_TRAIL(uchar) UTF_IS_SECOND_SURROGATE(uchar)

/** Does this scalar Unicode value need multiple code units for storage? @deprecated ICU 2.4. Use U16_LENGTH or test ((uint32_t)(c)>0xffff) instead, see utf_old.h. */
#define UTF16_NEED_MULTIPLE_UCHAR(c) ((uint32_t)(c)>0xffff)

/** @deprecated ICU 2.4. Renamed to U16_LENGTH, see utf_old.h. */
#define UTF16_CHAR_LENGTH(c) ((uint32_t)(c)<=0xffff ? 1 : 2)

/** @deprecated ICU 2.4. Renamed to U16_MAX_LENGTH, see utf_old.h. */
#define UTF16_MAX_CHAR_LENGTH 2

/** Average number of code units compared to UTF-16. @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF16_ARRAY_SIZE(size) (size)

/**
 * Get a single code point from an offset that points to any
 * of the code units that belong to that code point.
 * Assume 0<=i<length.
 *
 * This could be used for iteration together with
 * UTF16_CHAR_LENGTH() and UTF_IS_ERROR(),
 * but the use of UTF16_NEXT_CHAR[_UNSAFE]() and
 * UTF16_PREV_CHAR[_UNSAFE]() is more efficient for that.
 * @deprecated ICU 2.4. Renamed to U16_GET_UNSAFE, see utf_old.h.
 */
#define UTF16_GET_CHAR_UNSAFE(s, i, c) UPRV_BLOCK_MACRO_BEGIN { \
    (c)=(s)[i]; \
    if(UTF_IS_SURROGATE(c)) { \
        if(UTF_IS_SURROGATE_FIRST(c)) { \
            (c)=UTF16_GET_PAIR_VALUE((c), (s)[(i)+1]); \
        } else { \
            (c)=UTF16_GET_PAIR_VALUE((s)[(i)-1], (c)); \
        } \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Use U16_GET instead, see utf_old.h. */
#define UTF16_GET_CHAR_SAFE(s, start, i, length, c, strict) UPRV_BLOCK_MACRO_BEGIN { \
    (c)=(s)[i]; \
    if(UTF_IS_SURROGATE(c)) { \
        uint16_t __c2; \
        if(UTF_IS_SURROGATE_FIRST(c)) { \
            if((i)+1<(length) && UTF_IS_SECOND_SURROGATE(__c2=(s)[(i)+1])) { \
                (c)=UTF16_GET_PAIR_VALUE((c), __c2); \
                /* strict: ((c)&0xfffe)==0xfffe is caught by UTF_IS_ERROR() and UTF_IS_UNICODE_CHAR() */ \
            } else if(strict) {\
                /* unmatched first surrogate */ \
                (c)=UTF_ERROR_VALUE; \
            } \
        } else { \
            if((i)-1>=(start) && UTF_IS_FIRST_SURROGATE(__c2=(s)[(i)-1])) { \
                (c)=UTF16_GET_PAIR_VALUE(__c2, (c)); \
                /* strict: ((c)&0xfffe)==0xfffe is caught by UTF_IS_ERROR() and UTF_IS_UNICODE_CHAR() */ \
            } else if(strict) {\
                /* unmatched second surrogate */ \
                (c)=UTF_ERROR_VALUE; \
            } \
        } \
    } else if((strict) && !UTF_IS_UNICODE_CHAR(c)) { \
        (c)=UTF_ERROR_VALUE; \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Renamed to U16_NEXT_UNSAFE, see utf_old.h. */
#define UTF16_NEXT_CHAR_UNSAFE(s, i, c) UPRV_BLOCK_MACRO_BEGIN { \
    (c)=(s)[(i)++]; \
    if(UTF_IS_FIRST_SURROGATE(c)) { \
        (c)=UTF16_GET_PAIR_VALUE((c), (s)[(i)++]); \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Renamed to U16_APPEND_UNSAFE, see utf_old.h. */
#define UTF16_APPEND_CHAR_UNSAFE(s, i, c) UPRV_BLOCK_MACRO_BEGIN { \
    if((uint32_t)(c)<=0xffff) { \
        (s)[(i)++]=(uint16_t)(c); \
    } else { \
        (s)[(i)++]=(uint16_t)(((c)>>10)+0xd7c0); \
        (s)[(i)++]=(uint16_t)(((c)&0x3ff)|0xdc00); \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Renamed to U16_FWD_1_UNSAFE, see utf_old.h. */
#define UTF16_FWD_1_UNSAFE(s, i) UPRV_BLOCK_MACRO_BEGIN { \
    if(UTF_IS_FIRST_SURROGATE((s)[(i)++])) { \
        ++(i); \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Renamed to U16_FWD_N_UNSAFE, see utf_old.h. */
#define UTF16_FWD_N_UNSAFE(s, i, n) UPRV_BLOCK_MACRO_BEGIN { \
    int32_t __N=(n); \
    while(__N>0) { \
        UTF16_FWD_1_UNSAFE(s, i); \
        --__N; \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Renamed to U16_SET_CP_START_UNSAFE, see utf_old.h. */
#define UTF16_SET_CHAR_START_UNSAFE(s, i) UPRV_BLOCK_MACRO_BEGIN { \
    if(UTF_IS_SECOND_SURROGATE((s)[i])) { \
        --(i); \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Use U16_NEXT instead, see utf_old.h. */
#define UTF16_NEXT_CHAR_SAFE(s, i, length, c, strict) UPRV_BLOCK_MACRO_BEGIN { \
    (c)=(s)[(i)++]; \
    if(UTF_IS_FIRST_SURROGATE(c)) { \
        uint16_t __c2; \
        if((i)<(length) && UTF_IS_SECOND_SURROGATE(__c2=(s)[(i)])) { \
            ++(i); \
            (c)=UTF16_GET_PAIR_VALUE((c), __c2); \
            /* strict: ((c)&0xfffe)==0xfffe is caught by UTF_IS_ERROR() and UTF_IS_UNICODE_CHAR() */ \
        } else if(strict) {\
            /* unmatched first surrogate */ \
            (c)=UTF_ERROR_VALUE; \
        } \
    } else if((strict) && !UTF_IS_UNICODE_CHAR(c)) { \
        /* unmatched second surrogate or other non-character */ \
        (c)=UTF_ERROR_VALUE; \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Use U16_APPEND instead, see utf_old.h. */
#define UTF16_APPEND_CHAR_SAFE(s, i, length, c) UPRV_BLOCK_MACRO_BEGIN { \
    if((uint32_t)(c)<=0xffff) { \
        (s)[(i)++]=(uint16_t)(c); \
    } else if((uint32_t)(c)<=0x10ffff) { \
        if((i)+1<(length)) { \
            (s)[(i)++]=(uint16_t)(((c)>>10)+0xd7c0); \
            (s)[(i)++]=(uint16_t)(((c)&0x3ff)|0xdc00); \
        } else /* not enough space */ { \
            (s)[(i)++]=UTF_ERROR_VALUE; \
        } \
    } else /* c>0x10ffff, write error value */ { \
        (s)[(i)++]=UTF_ERROR_VALUE; \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Renamed to U16_FWD_1, see utf_old.h. */
#define UTF16_FWD_1_SAFE(s, i, length) U16_FWD_1(s, i, length)

/** @deprecated ICU 2.4. Renamed to U16_FWD_N, see utf_old.h. */
#define UTF16_FWD_N_SAFE(s, i, length, n) U16_FWD_N(s, i, length, n)

/** @deprecated ICU 2.4. Renamed to U16_SET_CP_START, see utf_old.h. */
#define UTF16_SET_CHAR_START_SAFE(s, start, i) U16_SET_CP_START(s, start, i)

/** @deprecated ICU 2.4. Renamed to U16_PREV_UNSAFE, see utf_old.h. */
#define UTF16_PREV_CHAR_UNSAFE(s, i, c) UPRV_BLOCK_MACRO_BEGIN { \
    (c)=(s)[--(i)]; \
    if(UTF_IS_SECOND_SURROGATE(c)) { \
        (c)=UTF16_GET_PAIR_VALUE((s)[--(i)], (c)); \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Renamed to U16_BACK_1_UNSAFE, see utf_old.h. */
#define UTF16_BACK_1_UNSAFE(s, i) UPRV_BLOCK_MACRO_BEGIN { \
    if(UTF_IS_SECOND_SURROGATE((s)[--(i)])) { \
        --(i); \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Renamed to U16_BACK_N_UNSAFE, see utf_old.h. */
#define UTF16_BACK_N_UNSAFE(s, i, n) UPRV_BLOCK_MACRO_BEGIN { \
    int32_t __N=(n); \
    while(__N>0) { \
        UTF16_BACK_1_UNSAFE(s, i); \
        --__N; \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Renamed to U16_SET_CP_LIMIT_UNSAFE, see utf_old.h. */
#define UTF16_SET_CHAR_LIMIT_UNSAFE(s, i) UPRV_BLOCK_MACRO_BEGIN { \
    if(UTF_IS_FIRST_SURROGATE((s)[(i)-1])) { \
        ++(i); \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Use U16_PREV instead, see utf_old.h. */
#define UTF16_PREV_CHAR_SAFE(s, start, i, c, strict) UPRV_BLOCK_MACRO_BEGIN { \
    (c)=(s)[--(i)]; \
    if(UTF_IS_SECOND_SURROGATE(c)) { \
        uint16_t __c2; \
        if((i)>(start) && UTF_IS_FIRST_SURROGATE(__c2=(s)[(i)-1])) { \
            --(i); \
            (c)=UTF16_GET_PAIR_VALUE(__c2, (c)); \
            /* strict: ((c)&0xfffe)==0xfffe is caught by UTF_IS_ERROR() and UTF_IS_UNICODE_CHAR() */ \
        } else if(strict) {\
            /* unmatched second surrogate */ \
            (c)=UTF_ERROR_VALUE; \
        } \
    } else if((strict) && !UTF_IS_UNICODE_CHAR(c)) { \
        /* unmatched first surrogate or other non-character */ \
        (c)=UTF_ERROR_VALUE; \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Renamed to U16_BACK_1, see utf_old.h. */
#define UTF16_BACK_1_SAFE(s, start, i) U16_BACK_1(s, start, i)

/** @deprecated ICU 2.4. Renamed to U16_BACK_N, see utf_old.h. */
#define UTF16_BACK_N_SAFE(s, start, i, n) U16_BACK_N(s, start, i, n)

/** @deprecated ICU 2.4. Renamed to U16_SET_CP_LIMIT, see utf_old.h. */
#define UTF16_SET_CHAR_LIMIT_SAFE(s, start, i, length) U16_SET_CP_LIMIT(s, start, i, length)

/* Formerly utf32.h --------------------------------------------------------- */

/*
* Old documentation:
*
*   This file defines macros to deal with UTF-32 code units and code points.
*   Signatures and semantics are the same as for the similarly named macros
*   in utf16.h.
*   utf32.h is included by utf.h after unicode/umachine.h</p>
*   and some common definitions.
*   <p><b>Usage:</b>  ICU coding guidelines for if() statements should be followed when using these macros.
*                  Compound statements (curly braces {}) must be used  for if-else-while...
*                  bodies and all macro statements should be terminated with semicolon.</p>
*/

/* internal definitions ----------------------------------------------------- */

/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_IS_SAFE(c, strict) \
    (!(strict) ? \
        (uint32_t)(c)<=0x10ffff : \
        UTF_IS_UNICODE_CHAR(c))

/*
 * For the semantics of all of these macros, see utf16.h.
 * The UTF-32 versions are trivial because any code point is
 * encoded using exactly one code unit.
 */

/* single-code point definitions -------------------------------------------- */

/* classes of code unit values */

/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_IS_SINGLE(uchar) 1
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_IS_LEAD(uchar) 0
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_IS_TRAIL(uchar) 0

/* number of code units per code point */

/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_NEED_MULTIPLE_UCHAR(c) 0
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_CHAR_LENGTH(c) 1
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_MAX_CHAR_LENGTH 1

/* average number of code units compared to UTF-16 */

/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_ARRAY_SIZE(size) (size)

/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_GET_CHAR_UNSAFE(s, i, c) UPRV_BLOCK_MACRO_BEGIN { \
    (c)=(s)[i]; \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_GET_CHAR_SAFE(s, start, i, length, c, strict) UPRV_BLOCK_MACRO_BEGIN { \
    (c)=(s)[i]; \
    if(!UTF32_IS_SAFE(c, strict)) { \
        (c)=UTF_ERROR_VALUE; \
    } \
} UPRV_BLOCK_MACRO_END

/* definitions with forward iteration --------------------------------------- */

/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_NEXT_CHAR_UNSAFE(s, i, c) UPRV_BLOCK_MACRO_BEGIN { \
    (c)=(s)[(i)++]; \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_APPEND_CHAR_UNSAFE(s, i, c) UPRV_BLOCK_MACRO_BEGIN { \
    (s)[(i)++]=(c); \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_FWD_1_UNSAFE(s, i) UPRV_BLOCK_MACRO_BEGIN { \
    ++(i); \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_FWD_N_UNSAFE(s, i, n) UPRV_BLOCK_MACRO_BEGIN { \
    (i)+=(n); \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_SET_CHAR_START_UNSAFE(s, i) UPRV_BLOCK_MACRO_BEGIN { \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_NEXT_CHAR_SAFE(s, i, length, c, strict) UPRV_BLOCK_MACRO_BEGIN { \
    (c)=(s)[(i)++]; \
    if(!UTF32_IS_SAFE(c, strict)) { \
        (c)=UTF_ERROR_VALUE; \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_APPEND_CHAR_SAFE(s, i, length, c) UPRV_BLOCK_MACRO_BEGIN { \
    if((uint32_t)(c)<=0x10ffff) { \
        (s)[(i)++]=(c); \
    } else /* c>0x10ffff, write 0xfffd */ { \
        (s)[(i)++]=0xfffd; \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_FWD_1_SAFE(s, i, length) UPRV_BLOCK_MACRO_BEGIN { \
    ++(i); \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_FWD_N_SAFE(s, i, length, n) UPRV_BLOCK_MACRO_BEGIN { \
    if(((i)+=(n))>(length)) { \
        (i)=(length); \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_SET_CHAR_START_SAFE(s, start, i) UPRV_BLOCK_MACRO_BEGIN { \
} UPRV_BLOCK_MACRO_END

/* definitions with backward iteration -------------------------------------- */

/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_PREV_CHAR_UNSAFE(s, i, c) UPRV_BLOCK_MACRO_BEGIN { \
    (c)=(s)[--(i)]; \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_BACK_1_UNSAFE(s, i) UPRV_BLOCK_MACRO_BEGIN { \
    --(i); \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_BACK_N_UNSAFE(s, i, n) UPRV_BLOCK_MACRO_BEGIN { \
    (i)-=(n); \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_SET_CHAR_LIMIT_UNSAFE(s, i) UPRV_BLOCK_MACRO_BEGIN { \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_PREV_CHAR_SAFE(s, start, i, c, strict) UPRV_BLOCK_MACRO_BEGIN { \
    (c)=(s)[--(i)]; \
    if(!UTF32_IS_SAFE(c, strict)) { \
        (c)=UTF_ERROR_VALUE; \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_BACK_1_SAFE(s, start, i) UPRV_BLOCK_MACRO_BEGIN { \
    --(i); \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_BACK_N_SAFE(s, start, i, n) UPRV_BLOCK_MACRO_BEGIN { \
    (i)-=(n); \
    if((i)<(start)) { \
        (i)=(start); \
    } \
} UPRV_BLOCK_MACRO_END

/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_SET_CHAR_LIMIT_SAFE(s, i, length) UPRV_BLOCK_MACRO_BEGIN { \
} UPRV_BLOCK_MACRO_END

/* Formerly utf.h, part 2 --------------------------------------------------- */

/**
 * Estimate the number of code units for a string based on the number of UTF-16 code units.
 *
 * @deprecated ICU 2.4. Obsolete, see utf_old.h.
 */
#define UTF_ARRAY_SIZE(size) UTF16_ARRAY_SIZE(size)

/** @deprecated ICU 2.4. Renamed to U16_GET_UNSAFE, see utf_old.h. */
#define UTF_GET_CHAR_UNSAFE(s, i, c)                 UTF16_GET_CHAR_UNSAFE(s, i, c)

/** @deprecated ICU 2.4. Use U16_GET instead, see utf_old.h. */
#define UTF_GET_CHAR_SAFE(s, start, i, length, c, strict) UTF16_GET_CHAR_SAFE(s, start, i, length, c, strict)


/** @deprecated ICU 2.4. Renamed to U16_NEXT_UNSAFE, see utf_old.h. */
#define UTF_NEXT_CHAR_UNSAFE(s, i, c)                UTF16_NEXT_CHAR_UNSAFE(s, i, c)

/** @deprecated ICU 2.4. Use U16_NEXT instead, see utf_old.h. */
#define UTF_NEXT_CHAR_SAFE(s, i, length, c, strict)  UTF16_NEXT_CHAR_SAFE(s, i, length, c, strict)


/** @deprecated ICU 2.4. Renamed to U16_APPEND_UNSAFE, see utf_old.h. */
#define UTF_APPEND_CHAR_UNSAFE(s, i, c)              UTF16_APPEND_CHAR_UNSAFE(s, i, c)

/** @deprecated ICU 2.4. Use U16_APPEND instead, see utf_old.h. */
#define UTF_APPEND_CHAR_SAFE(s, i, length, c)        UTF16_APPEND_CHAR_SAFE(s, i, length, c)


/** @deprecated ICU 2.4. Renamed to U16_FWD_1_UNSAFE, see utf_old.h. */
#define UTF_FWD_1_UNSAFE(s, i)                       UTF16_FWD_1_UNSAFE(s, i)

/** @deprecated ICU 2.4. Renamed to U16_FWD_1, see utf_old.h. */
#define UTF_FWD_1_SAFE(s, i, length)                 UTF16_FWD_1_SAFE(s, i, length)


/** @deprecated ICU 2.4. Renamed to U16_FWD_N_UNSAFE, see utf_old.h. */
#define UTF_FWD_N_UNSAFE(s, i, n)                    UTF16_FWD_N_UNSAFE(s, i, n)

/** @deprecated ICU 2.4. Renamed to U16_FWD_N, see utf_old.h. */
#define UTF_FWD_N_SAFE(s, i, length, n)              UTF16_FWD_N_SAFE(s, i, length, n)


/** @deprecated ICU 2.4. Renamed to U16_SET_CP_START_UNSAFE, see utf_old.h. */
#define UTF_SET_CHAR_START_UNSAFE(s, i)              UTF16_SET_CHAR_START_UNSAFE(s, i)

/** @deprecated ICU 2.4. Renamed to U16_SET_CP_START, see utf_old.h. */
#define UTF_SET_CHAR_START_SAFE(s, start, i)         UTF16_SET_CHAR_START_SAFE(s, start, i)


/** @deprecated ICU 2.4. Renamed to U16_PREV_UNSAFE, see utf_old.h. */
#define UTF_PREV_CHAR_UNSAFE(s, i, c)                UTF16_PREV_CHAR_UNSAFE(s, i, c)

/** @deprecated ICU 2.4. Use U16_PREV instead, see utf_old.h. */
#define UTF_PREV_CHAR_SAFE(s, start, i, c, strict)   UTF16_PREV_CHAR_SAFE(s, start, i, c, strict)


/** @deprecated ICU 2.4. Renamed to U16_BACK_1_UNSAFE, see utf_old.h. */
#define UTF_BACK_1_UNSAFE(s, i)                      UTF16_BACK_1_UNSAFE(s, i)

/** @deprecated ICU 2.4. Renamed to U16_BACK_1, see utf_old.h. */
#define UTF_BACK_1_SAFE(s, start, i)                 UTF16_BACK_1_SAFE(s, start, i)


/** @deprecated ICU 2.4. Renamed to U16_BACK_N_UNSAFE, see utf_old.h. */
#define UTF_BACK_N_UNSAFE(s, i, n)                   UTF16_BACK_N_UNSAFE(s, i, n)

/** @deprecated ICU 2.4. Renamed to U16_BACK_N, see utf_old.h. */
#define UTF_BACK_N_SAFE(s, start, i, n)              UTF16_BACK_N_SAFE(s, start, i, n)


/** @deprecated ICU 2.4. Renamed to U16_SET_CP_LIMIT_UNSAFE, see utf_old.h. */
#define UTF_SET_CHAR_LIMIT_UNSAFE(s, i)              UTF16_SET_CHAR_LIMIT_UNSAFE(s, i)

/** @deprecated ICU 2.4. Renamed to U16_SET_CP_LIMIT, see utf_old.h. */
#define UTF_SET_CHAR_LIMIT_SAFE(s, start, i, length) UTF16_SET_CHAR_LIMIT_SAFE(s, start, i, length)

/* Define default macros (UTF-16 "safe") ------------------------------------ */

/**
 * Does this code unit alone encode a code point (BMP, not a surrogate)?
 * Same as UTF16_IS_SINGLE.
 * @deprecated ICU 2.4. Renamed to U_IS_SINGLE and U16_IS_SINGLE, see utf_old.h.
 */
#define UTF_IS_SINGLE(uchar) U16_IS_SINGLE(uchar)

/**
 * Is this code unit the first one of several (a lead surrogate)?
 * Same as UTF16_IS_LEAD.
 * @deprecated ICU 2.4. Renamed to U_IS_LEAD and U16_IS_LEAD, see utf_old.h.
 */
#define UTF_IS_LEAD(uchar) U16_IS_LEAD(uchar)

/**
 * Is this code unit one of several but not the first one (a trail surrogate)?
 * Same as UTF16_IS_TRAIL.
 * @deprecated ICU 2.4. Renamed to U_IS_TRAIL and U16_IS_TRAIL, see utf_old.h.
 */
#define UTF_IS_TRAIL(uchar) U16_IS_TRAIL(uchar)

/**
 * Does this code point require multiple code units (is it a supplementary code point)?
 * Same as UTF16_NEED_MULTIPLE_UCHAR.
 * @deprecated ICU 2.4. Use U16_LENGTH or test ((uint32_t)(c)>0xffff) instead.
 */
#define UTF_NEED_MULTIPLE_UCHAR(c) UTF16_NEED_MULTIPLE_UCHAR(c)

/**
 * How many code units are used to encode this code point (1 or 2)?
 * Same as UTF16_CHAR_LENGTH.
 * @deprecated ICU 2.4. Renamed to U16_LENGTH, see utf_old.h.
 */
#define UTF_CHAR_LENGTH(c) U16_LENGTH(c)

/**
 * How many code units are used at most for any Unicode code point (2)?
 * Same as UTF16_MAX_CHAR_LENGTH.
 * @deprecated ICU 2.4. Renamed to U16_MAX_LENGTH, see utf_old.h.
 */
#define UTF_MAX_CHAR_LENGTH U16_MAX_LENGTH

/**
 * Set c to the code point that contains the code unit i.
 * i could point to the lead or the trail surrogate for the code point.
 * i is not modified.
 * Same as UTF16_GET_CHAR.
 * \pre 0<=i<length
 *
 * @deprecated ICU 2.4. Renamed to U16_GET, see utf_old.h.
 */
#define UTF_GET_CHAR(s, start, i, length, c) U16_GET(s, start, i, length, c)

/**
 * Set c to the code point that starts at code unit i
 * and advance i to beyond the code units of this code point (post-increment).
 * i must point to the first code unit of a code point.
 * Otherwise c is set to the trail unit (surrogate) itself.
 * Same as UTF16_NEXT_CHAR.
 * \pre 0<=i<length
 * \post 0<i<=length
 *
 * @deprecated ICU 2.4. Renamed to U16_NEXT, see utf_old.h.
 */
#define UTF_NEXT_CHAR(s, i, length, c) U16_NEXT(s, i, length, c)

/**
 * Append the code units of code point c to the string at index i
 * and advance i to beyond the new code units (post-increment).
 * The code units beginning at index i will be overwritten.
 * Same as UTF16_APPEND_CHAR.
 * \pre 0<=c<=0x10ffff
 * \pre 0<=i<length
 * \post 0<i<=length
 *
 * @deprecated ICU 2.4. Use U16_APPEND instead, see utf_old.h.
 */
#define UTF_APPEND_CHAR(s, i, length, c) UTF16_APPEND_CHAR_SAFE(s, i, length, c)

/**
 * Advance i to beyond the code units of the code point that begins at i.
 * I.e., advance i by one code point.
 * Same as UTF16_FWD_1.
 * \pre 0<=i<length
 * \post 0<i<=length
 *
 * @deprecated ICU 2.4. Renamed to U16_FWD_1, see utf_old.h.
 */
#define UTF_FWD_1(s, i, length) U16_FWD_1(s, i, length)

/**
 * Advance i to beyond the code units of the n code points where the first one begins at i.
 * I.e., advance i by n code points.
 * Same as UT16_FWD_N.
 * \pre 0<=i<length
 * \post 0<i<=length
 *
 * @deprecated ICU 2.4. Renamed to U16_FWD_N, see utf_old.h.
 */
#define UTF_FWD_N(s, i, length, n) U16_FWD_N(s, i, length, n)

/**
 * Take the random-access index i and adjust it so that it points to the beginning
 * of a code point.
 * The input index points to any code unit of a code point and is moved to point to
 * the first code unit of the same code point. i is never incremented.
 * In other words, if i points to a trail surrogate that is preceded by a matching
 * lead surrogate, then i is decremented. Otherwise it is not modified.
 * This can be used to start an iteration with UTF_NEXT_CHAR() from a random index.
 * Same as UTF16_SET_CHAR_START.
 * \pre start<=i<length
 * \post start<=i<length
 *
 * @deprecated ICU 2.4. Renamed to U16_SET_CP_START, see utf_old.h.
 */
#define UTF_SET_CHAR_START(s, start, i) U16_SET_CP_START(s, start, i)

/**
 * Set c to the code point that has code units before i
 * and move i backward (towards the beginning of the string)
 * to the first code unit of this code point (pre-increment).
 * i must point to the first code unit after the last unit of a code point (i==length is allowed).
 * Same as UTF16_PREV_CHAR.
 * \pre start<i<=length
 * \post start<=i<length
 *
 * @deprecated ICU 2.4. Renamed to U16_PREV, see utf_old.h.
 */
#define UTF_PREV_CHAR(s, start, i, c) U16_PREV(s, start, i, c)

/**
 * Move i backward (towards the beginning of the string)
 * to the first code unit of the code point that has code units before i.
 * I.e., move i backward by one code point.
 * i must point to the first code unit after the last unit of a code point (i==length is allowed).
 * Same as UTF16_BACK_1.
 * \pre start<i<=length
 * \post start<=i<length
 *
 * @deprecated ICU 2.4. Renamed to U16_BACK_1, see utf_old.h.
 */
#define UTF_BACK_1(s, start, i) U16_BACK_1(s, start, i)

/**
 * Move i backward (towards the beginning of the string)
 * to the first code unit of the n code points that have code units before i.
 * I.e., move i backward by n code points.
 * i must point to the first code unit after the last unit of a code point (i==length is allowed).
 * Same as UTF16_BACK_N.
 * \pre start<i<=length
 * \post start<=i<length
 *
 * @deprecated ICU 2.4. Renamed to U16_BACK_N, see utf_old.h.
 */
#define UTF_BACK_N(s, start, i, n) U16_BACK_N(s, start, i, n)

/**
 * Take the random-access index i and adjust it so that it points beyond
 * a code point. The input index points beyond any code unit
 * of a code point and is moved to point beyond the last code unit of the same
 * code point. i is never decremented.
 * In other words, if i points to a trail surrogate that is preceded by a matching
 * lead surrogate, then i is incremented. Otherwise it is not modified.
 * This can be used to start an iteration with UTF_PREV_CHAR() from a random index.
 * Same as UTF16_SET_CHAR_LIMIT.
 * \pre start<i<=length
 * \post start<i<=length
 *
 * @deprecated ICU 2.4. Renamed to U16_SET_CP_LIMIT, see utf_old.h.
 */
#define UTF_SET_CHAR_LIMIT(s, start, i, length) U16_SET_CP_LIMIT(s, start, i, length)

#endif  // !U_HIDE_DEPRECATED_API && !U_HIDE_OBSOLETE_UTF_OLD_H

#endif