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allow 64-bit utf8-encoded integers (from Ilya Zakharevich)
[perl5.git] / utf8.h
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1/* utf8.h
2 *
3818b22b 3 * Copyright (c) 1998-2000, Larry Wall
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4 *
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
7 *
8 */
9
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10START_EXTERN_C
11
a0ed51b3 12#ifdef DOINIT
6f06b55f 13EXTCONST unsigned char PL_utf8skip[] = {
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141,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* ascii */
151,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* ascii */
161,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* ascii */
171,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* ascii */
181,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* bogus */
191,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* bogus */
202,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, /* scripts */
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213,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,6,6, /* cjk etc. */
227,13, /* Perl extended (not UTF-8). Up to 72bit allowed (64-bit + reserved). */
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23};
24#else
6f06b55f 25EXTCONST unsigned char PL_utf8skip[];
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26#endif
27
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28END_EXTERN_C
29
393fec97 30/*#define IN_UTF8 (PL_curcop->op_private & HINT_UTF8)*/
5bc28da9 31#define IN_BYTE (PL_curcop->op_private & HINT_BYTE)
7e2040f0 32#define DO_UTF8(sv) (SvUTF8(sv) && !IN_BYTE)
a0ed51b3 33
6f06b55f 34#define UTF8SKIP(s) PL_utf8skip[*(U8*)s]
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35
36/*
37 * Note: we try to be careful never to call the isXXX_utf8() functions
38 * unless we're pretty sure we've seen the beginning of a UTF-8 character
39 * (that is, the two high bits are set). Otherwise we risk loading in the
40 * heavy-duty SWASHINIT and SWASHGET routines unnecessarily.
41 */
42#define isIDFIRST_lazy_if(p,c) ((!c || (*((U8*)p) < 0xc0)) \
43 ? isIDFIRST(*(p)) \
44 : isIDFIRST_utf8((U8*)p))
45#define isALNUM_lazy_if(p,c) ((!c || (*((U8*)p) < 0xc0)) \
46 ? isALNUM(*(p)) \
47 : isALNUM_utf8((U8*)p))
48#define isIDFIRST_lazy(p) isIDFIRST_lazy_if(p,1)
49#define isALNUM_lazy(p) isALNUM_lazy_if(p,1)