3 * Copyright (c) 1998-2000, Larry Wall
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.
11 * 'What a fix!' said Sam. 'That's the one place in all the lands we've ever
12 * heard of that we don't want to see any closer; and that's the one place
13 * we're trying to get to! And that's just where we can't get, nohow.'
15 * 'Well do I understand your speech,' he answered in the same language;
16 * 'yet few strangers do so. Why then do you not speak in the Common Tongue,
17 * as is the custom in the West, if you wish to be answered?'
19 * ...the travellers perceived that the floor was paved with stones of many
20 * hues; branching runes and strange devices intertwined beneath their feet.
24 #define PERL_IN_UTF8_C
30 Perl_uv_to_utf8(pTHX_ U8 *d, UV uv)
37 *d++ = (( uv >> 6) | 0xc0);
38 *d++ = (( uv & 0x3f) | 0x80);
42 *d++ = (( uv >> 12) | 0xe0);
43 *d++ = (((uv >> 6) & 0x3f) | 0x80);
44 *d++ = (( uv & 0x3f) | 0x80);
48 *d++ = (( uv >> 18) | 0xf0);
49 *d++ = (((uv >> 12) & 0x3f) | 0x80);
50 *d++ = (((uv >> 6) & 0x3f) | 0x80);
51 *d++ = (( uv & 0x3f) | 0x80);
55 *d++ = (( uv >> 24) | 0xf8);
56 *d++ = (((uv >> 18) & 0x3f) | 0x80);
57 *d++ = (((uv >> 12) & 0x3f) | 0x80);
58 *d++ = (((uv >> 6) & 0x3f) | 0x80);
59 *d++ = (( uv & 0x3f) | 0x80);
62 if (uv < 0x80000000) {
63 *d++ = (( uv >> 30) | 0xfc);
64 *d++ = (((uv >> 24) & 0x3f) | 0x80);
65 *d++ = (((uv >> 18) & 0x3f) | 0x80);
66 *d++ = (((uv >> 12) & 0x3f) | 0x80);
67 *d++ = (((uv >> 6) & 0x3f) | 0x80);
68 *d++ = (( uv & 0x3f) | 0x80);
72 if (uv < 0x1000000000LL)
75 *d++ = 0xfe; /* Can't match U+FEFF! */
76 *d++ = (((uv >> 30) & 0x3f) | 0x80);
77 *d++ = (((uv >> 24) & 0x3f) | 0x80);
78 *d++ = (((uv >> 18) & 0x3f) | 0x80);
79 *d++ = (((uv >> 12) & 0x3f) | 0x80);
80 *d++ = (((uv >> 6) & 0x3f) | 0x80);
81 *d++ = (( uv & 0x3f) | 0x80);
86 *d++ = 0xff; /* Can't match U+FFFE! */
87 *d++ = 0x80; /* 6 Reserved bits */
88 *d++ = (((uv >> 60) & 0x0f) | 0x80); /* 2 Reserved bits */
89 *d++ = (((uv >> 54) & 0x3f) | 0x80);
90 *d++ = (((uv >> 48) & 0x3f) | 0x80);
91 *d++ = (((uv >> 42) & 0x3f) | 0x80);
92 *d++ = (((uv >> 36) & 0x3f) | 0x80);
93 *d++ = (((uv >> 30) & 0x3f) | 0x80);
94 *d++ = (((uv >> 24) & 0x3f) | 0x80);
95 *d++ = (((uv >> 18) & 0x3f) | 0x80);
96 *d++ = (((uv >> 12) & 0x3f) | 0x80);
97 *d++ = (((uv >> 6) & 0x3f) | 0x80);
98 *d++ = (( uv & 0x3f) | 0x80);
104 /* Tests if some arbitrary number of bytes begins in a valid UTF-8 character.
105 * The actual number of bytes in the UTF-8 character will be returned if it
106 * is valid, otherwise 0. */
108 Perl_is_utf8_char(pTHX_ U8 *s)
119 if (!(u & 0x20)) { len = 2; }
120 else if (!(u & 0x10)) { len = 3; }
121 else if (!(u & 0x08)) { len = 4; }
122 else if (!(u & 0x04)) { len = 5; }
123 else if (!(u & 0x02)) { len = 6; }
124 else if (!(u & 0x01)) { len = 7; }
125 else { len = 13; } /* whoa! */
130 if ((*s & 0xc0) != 0x80)
138 =for apidoc Am|bool_utf8_string|U8 *s|STRLEN len
140 Returns true if first C<len> bytes of the given string form valid a UTF8
141 string, false otherwise.
147 Perl_is_utf8_string(pTHX_ U8 *s, STRLEN len)
162 Perl_utf8_to_uv(pTHX_ U8* s, I32* retlen)
173 if (ckWARN_d(WARN_UTF8))
174 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
180 if (!(uv & 0x20)) { len = 2; uv &= 0x1f; }
181 else if (!(uv & 0x10)) { len = 3; uv &= 0x0f; }
182 else if (!(uv & 0x08)) { len = 4; uv &= 0x07; }
183 else if (!(uv & 0x04)) { len = 5; uv &= 0x03; }
184 else if (!(uv & 0x02)) { len = 6; uv &= 0x01; }
185 else if (!(uv & 0x01)) { len = 7; uv = 0; }
186 else { len = 13; uv = 0; } /* whoa! */
193 if ((*s & 0xc0) != 0x80) {
195 if (ckWARN_d(WARN_UTF8))
196 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
202 uv = (uv << 6) | (*s++ & 0x3f);
207 /* utf8_distance(a,b) returns the number of UTF8 characters between
208 the pointers a and b */
211 Perl_utf8_distance(pTHX_ U8 *a, U8 *b)
229 /* WARNING: do not use the following unless you *know* off is within bounds */
232 Perl_utf8_hop(pTHX_ U8 *s, I32 off)
242 while ((*s & 0xc0) == 0x80)
251 =for apidoc Am|U8 *|utf8_to_bytes|U8 *s|STRLEN *len
253 Converts a string C<s> of length C<len> from UTF8 into byte encoding.
254 Unlike C<bytes_to_utf8>, this over-writes the original string, and
255 updates len to contain the new length.
256 Returns zero on failure leaving the string and len unchanged
262 Perl_utf8_to_bytes(pTHX_ U8* s, STRLEN *len)
272 /* ensure valid UTF8 and chars < 256 before updating string */
276 ( (s >= send) || ((*s++ & 0xc0) != 0x80) || ((c & 0xfe) != 0xc2)))
285 *d++ = (U8)utf8_to_uv(s, &ulen);
295 =for apidoc Am|U8 *|bytes_to_utf8|U8 *s|STRLEN *len
297 Converts a string C<s> of length C<len> from ASCII into UTF8 encoding.
298 Returns a pointer to the newly-created string, and sets C<len> to
299 reflect the new length.
305 Perl_bytes_to_utf8(pTHX_ U8* s, STRLEN *len)
313 Newz(801, d, (*len) * 2 + 1, U8);
321 *d++ = (( uv >> 6) | 0xc0);
322 *d++ = (( uv & 0x3f) | 0x80);
331 * Convert native (big-endian) or reversed (little-endian) UTF-16 to UTF-8.
333 * Destination must be pre-extended to 3/2 source. Do not use in-place.
334 * We optimize for native, for obvious reasons. */
337 Perl_utf16_to_utf8(pTHX_ U8* p, U8* d, I32 bytelen, I32 *newlen)
343 Perl_croak(aTHX_ "panic: utf16_to_utf8: odd bytelen");
348 UV uv = (p[0] << 8) + p[1]; /* UTF-16BE */
355 *d++ = (( uv >> 6) | 0xc0);
356 *d++ = (( uv & 0x3f) | 0x80);
359 if (uv >= 0xd800 && uv < 0xdbff) { /* surrogates */
362 if (low < 0xdc00 || low >= 0xdfff)
363 Perl_croak(aTHX_ "Malformed UTF-16 surrogate");
364 uv = ((uv - 0xd800) << 10) + (low - 0xdc00) + 0x10000;
367 *d++ = (( uv >> 12) | 0xe0);
368 *d++ = (((uv >> 6) & 0x3f) | 0x80);
369 *d++ = (( uv & 0x3f) | 0x80);
373 *d++ = (( uv >> 18) | 0xf0);
374 *d++ = (((uv >> 12) & 0x3f) | 0x80);
375 *d++ = (((uv >> 6) & 0x3f) | 0x80);
376 *d++ = (( uv & 0x3f) | 0x80);
380 *newlen = d - dstart;
384 /* Note: this one is slightly destructive of the source. */
387 Perl_utf16_to_utf8_reversed(pTHX_ U8* p, U8* d, I32 bytelen, I32 *newlen)
390 U8* send = s + bytelen;
397 return utf16_to_utf8(p, d, bytelen, newlen);
400 /* for now these are all defined (inefficiently) in terms of the utf8 versions */
403 Perl_is_uni_alnum(pTHX_ U32 c)
405 U8 tmpbuf[UTF8_MAXLEN];
406 uv_to_utf8(tmpbuf, (UV)c);
407 return is_utf8_alnum(tmpbuf);
411 Perl_is_uni_alnumc(pTHX_ U32 c)
413 U8 tmpbuf[UTF8_MAXLEN];
414 uv_to_utf8(tmpbuf, (UV)c);
415 return is_utf8_alnumc(tmpbuf);
419 Perl_is_uni_idfirst(pTHX_ U32 c)
421 U8 tmpbuf[UTF8_MAXLEN];
422 uv_to_utf8(tmpbuf, (UV)c);
423 return is_utf8_idfirst(tmpbuf);
427 Perl_is_uni_alpha(pTHX_ U32 c)
429 U8 tmpbuf[UTF8_MAXLEN];
430 uv_to_utf8(tmpbuf, (UV)c);
431 return is_utf8_alpha(tmpbuf);
435 Perl_is_uni_ascii(pTHX_ U32 c)
437 U8 tmpbuf[UTF8_MAXLEN];
438 uv_to_utf8(tmpbuf, (UV)c);
439 return is_utf8_ascii(tmpbuf);
443 Perl_is_uni_space(pTHX_ U32 c)
445 U8 tmpbuf[UTF8_MAXLEN];
446 uv_to_utf8(tmpbuf, (UV)c);
447 return is_utf8_space(tmpbuf);
451 Perl_is_uni_digit(pTHX_ U32 c)
453 U8 tmpbuf[UTF8_MAXLEN];
454 uv_to_utf8(tmpbuf, (UV)c);
455 return is_utf8_digit(tmpbuf);
459 Perl_is_uni_upper(pTHX_ U32 c)
461 U8 tmpbuf[UTF8_MAXLEN];
462 uv_to_utf8(tmpbuf, (UV)c);
463 return is_utf8_upper(tmpbuf);
467 Perl_is_uni_lower(pTHX_ U32 c)
469 U8 tmpbuf[UTF8_MAXLEN];
470 uv_to_utf8(tmpbuf, (UV)c);
471 return is_utf8_lower(tmpbuf);
475 Perl_is_uni_cntrl(pTHX_ U32 c)
477 U8 tmpbuf[UTF8_MAXLEN];
478 uv_to_utf8(tmpbuf, (UV)c);
479 return is_utf8_cntrl(tmpbuf);
483 Perl_is_uni_graph(pTHX_ U32 c)
485 U8 tmpbuf[UTF8_MAXLEN];
486 uv_to_utf8(tmpbuf, (UV)c);
487 return is_utf8_graph(tmpbuf);
491 Perl_is_uni_print(pTHX_ U32 c)
493 U8 tmpbuf[UTF8_MAXLEN];
494 uv_to_utf8(tmpbuf, (UV)c);
495 return is_utf8_print(tmpbuf);
499 Perl_is_uni_punct(pTHX_ U32 c)
501 U8 tmpbuf[UTF8_MAXLEN];
502 uv_to_utf8(tmpbuf, (UV)c);
503 return is_utf8_punct(tmpbuf);
507 Perl_is_uni_xdigit(pTHX_ U32 c)
509 U8 tmpbuf[UTF8_MAXLEN];
510 uv_to_utf8(tmpbuf, (UV)c);
511 return is_utf8_xdigit(tmpbuf);
515 Perl_to_uni_upper(pTHX_ U32 c)
517 U8 tmpbuf[UTF8_MAXLEN];
518 uv_to_utf8(tmpbuf, (UV)c);
519 return to_utf8_upper(tmpbuf);
523 Perl_to_uni_title(pTHX_ U32 c)
525 U8 tmpbuf[UTF8_MAXLEN];
526 uv_to_utf8(tmpbuf, (UV)c);
527 return to_utf8_title(tmpbuf);
531 Perl_to_uni_lower(pTHX_ U32 c)
533 U8 tmpbuf[UTF8_MAXLEN];
534 uv_to_utf8(tmpbuf, (UV)c);
535 return to_utf8_lower(tmpbuf);
538 /* for now these all assume no locale info available for Unicode > 255 */
541 Perl_is_uni_alnum_lc(pTHX_ U32 c)
543 return is_uni_alnum(c); /* XXX no locale support yet */
547 Perl_is_uni_alnumc_lc(pTHX_ U32 c)
549 return is_uni_alnumc(c); /* XXX no locale support yet */
553 Perl_is_uni_idfirst_lc(pTHX_ U32 c)
555 return is_uni_idfirst(c); /* XXX no locale support yet */
559 Perl_is_uni_alpha_lc(pTHX_ U32 c)
561 return is_uni_alpha(c); /* XXX no locale support yet */
565 Perl_is_uni_ascii_lc(pTHX_ U32 c)
567 return is_uni_ascii(c); /* XXX no locale support yet */
571 Perl_is_uni_space_lc(pTHX_ U32 c)
573 return is_uni_space(c); /* XXX no locale support yet */
577 Perl_is_uni_digit_lc(pTHX_ U32 c)
579 return is_uni_digit(c); /* XXX no locale support yet */
583 Perl_is_uni_upper_lc(pTHX_ U32 c)
585 return is_uni_upper(c); /* XXX no locale support yet */
589 Perl_is_uni_lower_lc(pTHX_ U32 c)
591 return is_uni_lower(c); /* XXX no locale support yet */
595 Perl_is_uni_cntrl_lc(pTHX_ U32 c)
597 return is_uni_cntrl(c); /* XXX no locale support yet */
601 Perl_is_uni_graph_lc(pTHX_ U32 c)
603 return is_uni_graph(c); /* XXX no locale support yet */
607 Perl_is_uni_print_lc(pTHX_ U32 c)
609 return is_uni_print(c); /* XXX no locale support yet */
613 Perl_is_uni_punct_lc(pTHX_ U32 c)
615 return is_uni_punct(c); /* XXX no locale support yet */
619 Perl_is_uni_xdigit_lc(pTHX_ U32 c)
621 return is_uni_xdigit(c); /* XXX no locale support yet */
625 Perl_to_uni_upper_lc(pTHX_ U32 c)
627 return to_uni_upper(c); /* XXX no locale support yet */
631 Perl_to_uni_title_lc(pTHX_ U32 c)
633 return to_uni_title(c); /* XXX no locale support yet */
637 Perl_to_uni_lower_lc(pTHX_ U32 c)
639 return to_uni_lower(c); /* XXX no locale support yet */
643 Perl_is_utf8_alnum(pTHX_ U8 *p)
645 if (!is_utf8_char(p))
648 PL_utf8_alnum = swash_init("utf8", "IsAlnum", &PL_sv_undef, 0, 0);
649 return swash_fetch(PL_utf8_alnum, p);
650 /* return *p == '_' || is_utf8_alpha(p) || is_utf8_digit(p); */
651 #ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */
653 PL_utf8_alnum = swash_init("utf8", "",
654 sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0);
655 return swash_fetch(PL_utf8_alnum, p);
660 Perl_is_utf8_alnumc(pTHX_ U8 *p)
662 if (!is_utf8_char(p))
665 PL_utf8_alnum = swash_init("utf8", "IsAlnumC", &PL_sv_undef, 0, 0);
666 return swash_fetch(PL_utf8_alnum, p);
667 /* return is_utf8_alpha(p) || is_utf8_digit(p); */
668 #ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */
670 PL_utf8_alnum = swash_init("utf8", "",
671 sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0);
672 return swash_fetch(PL_utf8_alnum, p);
677 Perl_is_utf8_idfirst(pTHX_ U8 *p)
679 return *p == '_' || is_utf8_alpha(p);
683 Perl_is_utf8_alpha(pTHX_ U8 *p)
685 if (!is_utf8_char(p))
688 PL_utf8_alpha = swash_init("utf8", "IsAlpha", &PL_sv_undef, 0, 0);
689 return swash_fetch(PL_utf8_alpha, p);
693 Perl_is_utf8_ascii(pTHX_ U8 *p)
695 if (!is_utf8_char(p))
698 PL_utf8_ascii = swash_init("utf8", "IsAscii", &PL_sv_undef, 0, 0);
699 return swash_fetch(PL_utf8_ascii, p);
703 Perl_is_utf8_space(pTHX_ U8 *p)
705 if (!is_utf8_char(p))
708 PL_utf8_space = swash_init("utf8", "IsSpace", &PL_sv_undef, 0, 0);
709 return swash_fetch(PL_utf8_space, p);
713 Perl_is_utf8_digit(pTHX_ U8 *p)
715 if (!is_utf8_char(p))
718 PL_utf8_digit = swash_init("utf8", "IsDigit", &PL_sv_undef, 0, 0);
719 return swash_fetch(PL_utf8_digit, p);
723 Perl_is_utf8_upper(pTHX_ U8 *p)
725 if (!is_utf8_char(p))
728 PL_utf8_upper = swash_init("utf8", "IsUpper", &PL_sv_undef, 0, 0);
729 return swash_fetch(PL_utf8_upper, p);
733 Perl_is_utf8_lower(pTHX_ U8 *p)
735 if (!is_utf8_char(p))
738 PL_utf8_lower = swash_init("utf8", "IsLower", &PL_sv_undef, 0, 0);
739 return swash_fetch(PL_utf8_lower, p);
743 Perl_is_utf8_cntrl(pTHX_ U8 *p)
745 if (!is_utf8_char(p))
748 PL_utf8_cntrl = swash_init("utf8", "IsCntrl", &PL_sv_undef, 0, 0);
749 return swash_fetch(PL_utf8_cntrl, p);
753 Perl_is_utf8_graph(pTHX_ U8 *p)
755 if (!is_utf8_char(p))
758 PL_utf8_graph = swash_init("utf8", "IsGraph", &PL_sv_undef, 0, 0);
759 return swash_fetch(PL_utf8_graph, p);
763 Perl_is_utf8_print(pTHX_ U8 *p)
765 if (!is_utf8_char(p))
768 PL_utf8_print = swash_init("utf8", "IsPrint", &PL_sv_undef, 0, 0);
769 return swash_fetch(PL_utf8_print, p);
773 Perl_is_utf8_punct(pTHX_ U8 *p)
775 if (!is_utf8_char(p))
778 PL_utf8_punct = swash_init("utf8", "IsPunct", &PL_sv_undef, 0, 0);
779 return swash_fetch(PL_utf8_punct, p);
783 Perl_is_utf8_xdigit(pTHX_ U8 *p)
785 if (!is_utf8_char(p))
788 PL_utf8_xdigit = swash_init("utf8", "IsXDigit", &PL_sv_undef, 0, 0);
789 return swash_fetch(PL_utf8_xdigit, p);
793 Perl_is_utf8_mark(pTHX_ U8 *p)
795 if (!is_utf8_char(p))
798 PL_utf8_mark = swash_init("utf8", "IsM", &PL_sv_undef, 0, 0);
799 return swash_fetch(PL_utf8_mark, p);
803 Perl_to_utf8_upper(pTHX_ U8 *p)
807 if (!PL_utf8_toupper)
808 PL_utf8_toupper = swash_init("utf8", "ToUpper", &PL_sv_undef, 4, 0);
809 uv = swash_fetch(PL_utf8_toupper, p);
810 return uv ? uv : utf8_to_uv(p,0);
814 Perl_to_utf8_title(pTHX_ U8 *p)
818 if (!PL_utf8_totitle)
819 PL_utf8_totitle = swash_init("utf8", "ToTitle", &PL_sv_undef, 4, 0);
820 uv = swash_fetch(PL_utf8_totitle, p);
821 return uv ? uv : utf8_to_uv(p,0);
825 Perl_to_utf8_lower(pTHX_ U8 *p)
829 if (!PL_utf8_tolower)
830 PL_utf8_tolower = swash_init("utf8", "ToLower", &PL_sv_undef, 4, 0);
831 uv = swash_fetch(PL_utf8_tolower, p);
832 return uv ? uv : utf8_to_uv(p,0);
835 /* a "swash" is a swatch hash */
838 Perl_swash_init(pTHX_ char* pkg, char* name, SV *listsv, I32 minbits, I32 none)
844 if (!gv_stashpv(pkg, 0)) { /* demand load utf8 */
846 Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, newSVpv(pkg,0), Nullsv);
850 PUSHSTACKi(PERLSI_MAGIC);
853 PUSHs(sv_2mortal(newSVpvn(pkg, strlen(pkg))));
854 PUSHs(sv_2mortal(newSVpvn(name, strlen(name))));
856 PUSHs(sv_2mortal(newSViv(minbits)));
857 PUSHs(sv_2mortal(newSViv(none)));
863 if (PL_curcop == &PL_compiling) /* XXX ought to be handled by lex_start */
864 strncpy(tmpbuf, PL_tokenbuf, sizeof tmpbuf);
865 if (call_method("SWASHNEW", G_SCALAR))
866 retval = newSVsv(*PL_stack_sp--);
868 retval = &PL_sv_undef;
871 if (PL_curcop == &PL_compiling) {
872 strncpy(PL_tokenbuf, tmpbuf, sizeof tmpbuf);
873 PL_curcop->op_private = PL_hints;
875 if (!SvROK(retval) || SvTYPE(SvRV(retval)) != SVt_PVHV)
876 Perl_croak(aTHX_ "SWASHNEW didn't return an HV ref");
881 Perl_swash_fetch(pTHX_ SV *sv, U8 *ptr)
883 HV* hv = (HV*)SvRV(sv);
884 U32 klen = UTF8SKIP(ptr) - 1;
885 U32 off = ptr[klen] & 127; /* NB: 64 bit always 0 when len > 1 */
887 STRLEN needents = (klen ? 64 : 128);
893 * This single-entry cache saves about 1/3 of the utf8 overhead in test
894 * suite. (That is, only 7-8% overall over just a hash cache. Still,
895 * it's nothing to sniff at.) Pity we usually come through at least
896 * two function calls to get here...
898 * NB: this code assumes that swatches are never modified, once generated!
901 if (hv == PL_last_swash_hv &&
902 klen == PL_last_swash_klen &&
903 (!klen || memEQ((char *)ptr,(char *)PL_last_swash_key,klen)) )
905 tmps = PL_last_swash_tmps;
906 slen = PL_last_swash_slen;
909 /* Try our second-level swatch cache, kept in a hash. */
910 SV** svp = hv_fetch(hv, (char*)ptr, klen, FALSE);
912 /* If not cached, generate it via utf8::SWASHGET */
913 if (!svp || !SvPOK(*svp) || !(tmps = (U8*)SvPV(*svp, slen))) {
918 PUSHSTACKi(PERLSI_MAGIC);
922 PUSHs(sv_2mortal(newSViv(utf8_to_uv(ptr, 0) & ~(needents - 1))));
923 PUSHs(sv_2mortal(newSViv(needents)));
925 if (call_method("SWASHGET", G_SCALAR))
926 retval = newSVsv(*PL_stack_sp--);
928 retval = &PL_sv_undef;
932 if (PL_curcop == &PL_compiling)
933 PL_curcop->op_private = PL_hints;
935 svp = hv_store(hv, (char*)ptr, klen, retval, 0);
937 if (!svp || !(tmps = (U8*)SvPV(*svp, slen)) || slen < 8)
938 Perl_croak(aTHX_ "SWASHGET didn't return result of proper length");
941 PL_last_swash_hv = hv;
942 PL_last_swash_klen = klen;
943 PL_last_swash_tmps = tmps;
944 PL_last_swash_slen = slen;
946 Copy(ptr, PL_last_swash_key, klen, U8);
949 switch ((slen << 3) / needents) {
951 bit = 1 << (off & 7);
953 return (tmps[off] & bit) != 0;
958 return (tmps[off] << 8) + tmps[off + 1] ;
961 return (tmps[off] << 24) + (tmps[off+1] << 16) + (tmps[off+2] << 8) + tmps[off + 3] ;
963 Perl_croak(aTHX_ "panic: swash_fetch");