3 * Copyright (C) 2012 by Larry Wall and others
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.
8 * This file is a home for static inline functions that cannot go in other
9 * headers files, because they depend on proto.h (included after most other
10 * headers) or struct definitions.
12 * Each section names the header file that the functions "belong" to.
15 /* ------------------------------- av.h ------------------------------- */
17 PERL_STATIC_INLINE SSize_t
18 S_av_top_index(pTHX_ AV *av)
20 PERL_ARGS_ASSERT_AV_TOP_INDEX;
21 assert(SvTYPE(av) == SVt_PVAV);
26 /* ------------------------------- cv.h ------------------------------- */
28 PERL_STATIC_INLINE GV *
32 ? Perl_cvgv_from_hek(aTHX_ sv)
33 : ((XPVCV*)MUTABLE_PTR(SvANY(sv)))->xcv_gv_u.xcv_gv;
36 PERL_STATIC_INLINE I32 *
37 S_CvDEPTHp(const CV * const sv)
39 assert(SvTYPE(sv) == SVt_PVCV || SvTYPE(sv) == SVt_PVFM);
40 return &((XPVCV*)SvANY(sv))->xcv_depth;
44 CvPROTO returns the prototype as stored, which is not necessarily what
45 the interpreter should be using. Specifically, the interpreter assumes
46 that spaces have been stripped, which has been the case if the prototype
47 was added by toke.c, but is generally not the case if it was added elsewhere.
48 Since we can't enforce the spacelessness at assignment time, this routine
49 provides a temporary copy at parse time with spaces removed.
50 I<orig> is the start of the original buffer, I<len> is the length of the
51 prototype and will be updated when this returns.
55 PERL_STATIC_INLINE char *
56 S_strip_spaces(pTHX_ const char * orig, STRLEN * const len)
60 tmpsv = newSVpvn_flags(orig, *len, SVs_TEMP);
68 *len = tmps - SvPVX(tmpsv);
73 /* ------------------------------- mg.h ------------------------------- */
75 #if defined(PERL_CORE) || defined(PERL_EXT)
76 /* assumes get-magic and stringification have already occurred */
77 PERL_STATIC_INLINE STRLEN
78 S_MgBYTEPOS(pTHX_ MAGIC *mg, SV *sv, const char *s, STRLEN len)
80 assert(mg->mg_type == PERL_MAGIC_regex_global);
81 assert(mg->mg_len != -1);
82 if (mg->mg_flags & MGf_BYTES || !DO_UTF8(sv))
83 return (STRLEN)mg->mg_len;
85 const STRLEN pos = (STRLEN)mg->mg_len;
86 /* Without this check, we may read past the end of the buffer: */
87 if (pos > sv_or_pv_len_utf8(sv, s, len)) return len+1;
88 return sv_or_pv_pos_u2b(sv, s, pos, NULL);
93 /* ------------------------------- pad.h ------------------------------ */
95 #if defined(PERL_IN_PAD_C) || defined(PERL_IN_OP_C)
96 PERL_STATIC_INLINE bool
97 PadnameIN_SCOPE(const PADNAME * const pn, const U32 seq)
99 /* is seq within the range _LOW to _HIGH ?
100 * This is complicated by the fact that PL_cop_seqmax
101 * may have wrapped around at some point */
102 if (COP_SEQ_RANGE_LOW(pn) == PERL_PADSEQ_INTRO)
103 return FALSE; /* not yet introduced */
105 if (COP_SEQ_RANGE_HIGH(pn) == PERL_PADSEQ_INTRO) {
106 /* in compiling scope */
108 (seq > COP_SEQ_RANGE_LOW(pn))
109 ? (seq - COP_SEQ_RANGE_LOW(pn) < (U32_MAX >> 1))
110 : (COP_SEQ_RANGE_LOW(pn) - seq > (U32_MAX >> 1))
115 (COP_SEQ_RANGE_LOW(pn) > COP_SEQ_RANGE_HIGH(pn))
117 ( seq > COP_SEQ_RANGE_LOW(pn)
118 || seq <= COP_SEQ_RANGE_HIGH(pn))
120 : ( seq > COP_SEQ_RANGE_LOW(pn)
121 && seq <= COP_SEQ_RANGE_HIGH(pn))
128 /* ------------------------------- pp.h ------------------------------- */
130 PERL_STATIC_INLINE I32
133 DEBUG_s(DEBUG_v(PerlIO_printf(Perl_debug_log,
134 "MARK top %p %" IVdf "\n",
136 (IV)*PL_markstack_ptr)));
137 return *PL_markstack_ptr;
140 PERL_STATIC_INLINE I32
143 DEBUG_s(DEBUG_v(PerlIO_printf(Perl_debug_log,
144 "MARK pop %p %" IVdf "\n",
145 (PL_markstack_ptr-1),
146 (IV)*(PL_markstack_ptr-1))));
147 assert((PL_markstack_ptr > PL_markstack) || !"MARK underflow");
148 return *PL_markstack_ptr--;
151 /* ----------------------------- regexp.h ----------------------------- */
153 PERL_STATIC_INLINE struct regexp *
154 S_ReANY(const REGEXP * const re)
156 assert(isREGEXP(re));
157 return re->sv_u.svu_rx;
160 /* ------------------------------- sv.h ------------------------------- */
162 PERL_STATIC_INLINE SV *
163 S_SvREFCNT_inc(SV *sv)
165 if (LIKELY(sv != NULL))
169 PERL_STATIC_INLINE SV *
170 S_SvREFCNT_inc_NN(SV *sv)
175 PERL_STATIC_INLINE void
176 S_SvREFCNT_inc_void(SV *sv)
178 if (LIKELY(sv != NULL))
181 PERL_STATIC_INLINE void
182 S_SvREFCNT_dec(pTHX_ SV *sv)
184 if (LIKELY(sv != NULL)) {
185 U32 rc = SvREFCNT(sv);
187 SvREFCNT(sv) = rc - 1;
189 Perl_sv_free2(aTHX_ sv, rc);
193 PERL_STATIC_INLINE void
194 S_SvREFCNT_dec_NN(pTHX_ SV *sv)
196 U32 rc = SvREFCNT(sv);
198 SvREFCNT(sv) = rc - 1;
200 Perl_sv_free2(aTHX_ sv, rc);
203 PERL_STATIC_INLINE void
207 if (SvOBJECT(SvRV(sv))) HvAMAGIC_on(SvSTASH(SvRV(sv)));
209 PERL_STATIC_INLINE void
212 if (SvROK(sv) && SvOBJECT(SvRV(sv)))
213 HvAMAGIC_off(SvSTASH(SvRV(sv)));
216 PERL_STATIC_INLINE U32
217 S_SvPADSTALE_on(SV *sv)
219 assert(!(SvFLAGS(sv) & SVs_PADTMP));
220 return SvFLAGS(sv) |= SVs_PADSTALE;
222 PERL_STATIC_INLINE U32
223 S_SvPADSTALE_off(SV *sv)
225 assert(!(SvFLAGS(sv) & SVs_PADTMP));
226 return SvFLAGS(sv) &= ~SVs_PADSTALE;
228 #if defined(PERL_CORE) || defined (PERL_EXT)
229 PERL_STATIC_INLINE STRLEN
230 S_sv_or_pv_pos_u2b(pTHX_ SV *sv, const char *pv, STRLEN pos, STRLEN *lenp)
232 PERL_ARGS_ASSERT_SV_OR_PV_POS_U2B;
234 U8 *hopped = utf8_hop((U8 *)pv, pos);
235 if (lenp) *lenp = (STRLEN)(utf8_hop(hopped, *lenp) - hopped);
236 return (STRLEN)(hopped - (U8 *)pv);
238 return sv_pos_u2b_flags(sv,pos,lenp,SV_CONST_RETURN);
242 /* ------------------------------- handy.h ------------------------------- */
244 /* saves machine code for a common noreturn idiom typically used in Newx*() */
245 #ifdef GCC_DIAG_PRAGMA
246 GCC_DIAG_IGNORE(-Wunused-function) /* Intentionally left semicolonless. */
249 S_croak_memory_wrap(void)
251 Perl_croak_nocontext("%s",PL_memory_wrap);
253 #ifdef GCC_DIAG_PRAGMA
254 GCC_DIAG_RESTORE /* Intentionally left semicolonless. */
257 /* ------------------------------- utf8.h ------------------------------- */
260 =head1 Unicode Support
263 PERL_STATIC_INLINE void
264 S_append_utf8_from_native_byte(const U8 byte, U8** dest)
266 /* Takes an input 'byte' (Latin1 or EBCDIC) and appends it to the UTF-8
267 * encoded string at '*dest', updating '*dest' to include it */
269 PERL_ARGS_ASSERT_APPEND_UTF8_FROM_NATIVE_BYTE;
271 if (NATIVE_BYTE_IS_INVARIANT(byte))
274 *((*dest)++) = UTF8_EIGHT_BIT_HI(byte);
275 *((*dest)++) = UTF8_EIGHT_BIT_LO(byte);
280 =for apidoc valid_utf8_to_uvchr
281 Like C<L</utf8_to_uvchr_buf>>, but should only be called when it is known that
282 the next character in the input UTF-8 string C<s> is well-formed (I<e.g.>,
283 it passes C<L</isUTF8_CHAR>>. Surrogates, non-character code points, and
284 non-Unicode code points are allowed.
290 PERL_STATIC_INLINE UV
291 Perl_valid_utf8_to_uvchr(const U8 *s, STRLEN *retlen)
293 const UV expectlen = UTF8SKIP(s);
294 const U8* send = s + expectlen;
297 PERL_ARGS_ASSERT_VALID_UTF8_TO_UVCHR;
303 /* An invariant is trivially returned */
304 if (expectlen == 1) {
308 /* Remove the leading bits that indicate the number of bytes, leaving just
309 * the bits that are part of the value */
310 uv = NATIVE_UTF8_TO_I8(uv) & UTF_START_MASK(expectlen);
312 /* Now, loop through the remaining bytes, accumulating each into the
313 * working total as we go. (I khw tried unrolling the loop for up to 4
314 * bytes, but there was no performance improvement) */
315 for (++s; s < send; s++) {
316 uv = UTF8_ACCUMULATE(uv, *s);
319 return UNI_TO_NATIVE(uv);
324 =for apidoc is_utf8_invariant_string
326 Returns TRUE if the first C<len> bytes of the string C<s> are the same
327 regardless of the UTF-8 encoding of the string (or UTF-EBCDIC encoding on
328 EBCDIC machines); otherwise it returns FALSE. That is, it returns TRUE if they
329 are UTF-8 invariant. On ASCII-ish machines, all the ASCII characters and only
330 the ASCII characters fit this definition. On EBCDIC machines, the ASCII-range
331 characters are invariant, but so also are the C1 controls.
333 If C<len> is 0, it will be calculated using C<strlen(s)>, (which means if you
334 use this option, that C<s> can't have embedded C<NUL> characters and has to
335 have a terminating C<NUL> byte).
338 C<L</is_utf8_string>>,
339 C<L</is_utf8_string_flags>>,
340 C<L</is_utf8_string_loc>>,
341 C<L</is_utf8_string_loc_flags>>,
342 C<L</is_utf8_string_loclen>>,
343 C<L</is_utf8_string_loclen_flags>>,
344 C<L</is_utf8_fixed_width_buf_flags>>,
345 C<L</is_utf8_fixed_width_buf_loc_flags>>,
346 C<L</is_utf8_fixed_width_buf_loclen_flags>>,
347 C<L</is_strict_utf8_string>>,
348 C<L</is_strict_utf8_string_loc>>,
349 C<L</is_strict_utf8_string_loclen>>,
350 C<L</is_c9strict_utf8_string>>,
351 C<L</is_c9strict_utf8_string_loc>>,
353 C<L</is_c9strict_utf8_string_loclen>>.
358 PERL_STATIC_INLINE bool
359 S_is_utf8_invariant_string(const U8* const s, const STRLEN len)
361 const U8* const send = s + (len ? len : strlen((const char *)s));
364 PERL_ARGS_ASSERT_IS_UTF8_INVARIANT_STRING;
366 for (; x < send; ++x) {
367 if (!UTF8_IS_INVARIANT(*x))
375 =for apidoc is_utf8_string
377 Returns TRUE if the first C<len> bytes of string C<s> form a valid
378 Perl-extended-UTF-8 string; returns FALSE otherwise. If C<len> is 0, it will
379 be calculated using C<strlen(s)> (which means if you use this option, that C<s>
380 can't have embedded C<NUL> characters and has to have a terminating C<NUL>
381 byte). Note that all characters being ASCII constitute 'a valid UTF-8 string'.
383 This function considers Perl's extended UTF-8 to be valid. That means that
384 code points above Unicode, surrogates, and non-character code points are
385 considered valid by this function. Use C<L</is_strict_utf8_string>>,
386 C<L</is_c9strict_utf8_string>>, or C<L</is_utf8_string_flags>> to restrict what
387 code points are considered valid.
390 C<L</is_utf8_invariant_string>>,
391 C<L</is_utf8_string_loc>>,
392 C<L</is_utf8_string_loclen>>,
393 C<L</is_utf8_fixed_width_buf_flags>>,
394 C<L</is_utf8_fixed_width_buf_loc_flags>>,
395 C<L</is_utf8_fixed_width_buf_loclen_flags>>,
400 PERL_STATIC_INLINE bool
401 Perl_is_utf8_string(const U8 *s, const STRLEN len)
403 /* This is now marked pure in embed.fnc, because isUTF8_CHAR now is pure.
404 * Be aware of possible changes to that */
406 const U8* const send = s + (len ? len : strlen((const char *)s));
409 PERL_ARGS_ASSERT_IS_UTF8_STRING;
412 const STRLEN cur_len = isUTF8_CHAR(x, send);
413 if (UNLIKELY(! cur_len)) {
423 =for apidoc is_strict_utf8_string
425 Returns TRUE if the first C<len> bytes of string C<s> form a valid
426 UTF-8-encoded string that is fully interchangeable by any application using
427 Unicode rules; otherwise it returns FALSE. If C<len> is 0, it will be
428 calculated using C<strlen(s)> (which means if you use this option, that C<s>
429 can't have embedded C<NUL> characters and has to have a terminating C<NUL>
430 byte). Note that all characters being ASCII constitute 'a valid UTF-8 string'.
432 This function returns FALSE for strings containing any
433 code points above the Unicode max of 0x10FFFF, surrogate code points, or
434 non-character code points.
437 C<L</is_utf8_invariant_string>>,
438 C<L</is_utf8_string>>,
439 C<L</is_utf8_string_flags>>,
440 C<L</is_utf8_string_loc>>,
441 C<L</is_utf8_string_loc_flags>>,
442 C<L</is_utf8_string_loclen>>,
443 C<L</is_utf8_string_loclen_flags>>,
444 C<L</is_utf8_fixed_width_buf_flags>>,
445 C<L</is_utf8_fixed_width_buf_loc_flags>>,
446 C<L</is_utf8_fixed_width_buf_loclen_flags>>,
447 C<L</is_strict_utf8_string_loc>>,
448 C<L</is_strict_utf8_string_loclen>>,
449 C<L</is_c9strict_utf8_string>>,
450 C<L</is_c9strict_utf8_string_loc>>,
452 C<L</is_c9strict_utf8_string_loclen>>.
457 PERL_STATIC_INLINE bool
458 S_is_strict_utf8_string(const U8 *s, const STRLEN len)
460 const U8* const send = s + (len ? len : strlen((const char *)s));
463 PERL_ARGS_ASSERT_IS_STRICT_UTF8_STRING;
466 const STRLEN cur_len = isSTRICT_UTF8_CHAR(x, send);
467 if (UNLIKELY(! cur_len)) {
477 =for apidoc is_c9strict_utf8_string
479 Returns TRUE if the first C<len> bytes of string C<s> form a valid
480 UTF-8-encoded string that conforms to
481 L<Unicode Corrigendum #9|http://www.unicode.org/versions/corrigendum9.html>;
482 otherwise it returns FALSE. If C<len> is 0, it will be calculated using
483 C<strlen(s)> (which means if you use this option, that C<s> can't have embedded
484 C<NUL> characters and has to have a terminating C<NUL> byte). Note that all
485 characters being ASCII constitute 'a valid UTF-8 string'.
487 This function returns FALSE for strings containing any code points above the
488 Unicode max of 0x10FFFF or surrogate code points, but accepts non-character
490 L<Corrigendum #9|http://www.unicode.org/versions/corrigendum9.html>.
493 C<L</is_utf8_invariant_string>>,
494 C<L</is_utf8_string>>,
495 C<L</is_utf8_string_flags>>,
496 C<L</is_utf8_string_loc>>,
497 C<L</is_utf8_string_loc_flags>>,
498 C<L</is_utf8_string_loclen>>,
499 C<L</is_utf8_string_loclen_flags>>,
500 C<L</is_utf8_fixed_width_buf_flags>>,
501 C<L</is_utf8_fixed_width_buf_loc_flags>>,
502 C<L</is_utf8_fixed_width_buf_loclen_flags>>,
503 C<L</is_strict_utf8_string>>,
504 C<L</is_strict_utf8_string_loc>>,
505 C<L</is_strict_utf8_string_loclen>>,
506 C<L</is_c9strict_utf8_string_loc>>,
508 C<L</is_c9strict_utf8_string_loclen>>.
513 PERL_STATIC_INLINE bool
514 S_is_c9strict_utf8_string(const U8 *s, const STRLEN len)
516 const U8* const send = s + (len ? len : strlen((const char *)s));
519 PERL_ARGS_ASSERT_IS_C9STRICT_UTF8_STRING;
522 const STRLEN cur_len = isC9_STRICT_UTF8_CHAR(x, send);
523 if (UNLIKELY(! cur_len)) {
532 /* The above 3 functions could have been moved into the more general one just
533 * below, and made #defines that call it with the right 'flags'. They are
534 * currently kept separate to increase their chances of getting inlined */
537 =for apidoc is_utf8_string_flags
539 Returns TRUE if the first C<len> bytes of string C<s> form a valid
540 UTF-8 string, subject to the restrictions imposed by C<flags>;
541 returns FALSE otherwise. If C<len> is 0, it will be calculated
542 using C<strlen(s)> (which means if you use this option, that C<s> can't have
543 embedded C<NUL> characters and has to have a terminating C<NUL> byte). Note
544 that all characters being ASCII constitute 'a valid UTF-8 string'.
546 If C<flags> is 0, this gives the same results as C<L</is_utf8_string>>; if
547 C<flags> is C<UTF8_DISALLOW_ILLEGAL_INTERCHANGE>, this gives the same results
548 as C<L</is_strict_utf8_string>>; and if C<flags> is
549 C<UTF8_DISALLOW_ILLEGAL_C9_INTERCHANGE>, this gives the same results as
550 C<L</is_c9strict_utf8_string>>. Otherwise C<flags> may be any
551 combination of the C<UTF8_DISALLOW_I<foo>> flags understood by
552 C<L</utf8n_to_uvchr>>, with the same meanings.
555 C<L</is_utf8_invariant_string>>,
556 C<L</is_utf8_string>>,
557 C<L</is_utf8_string_loc>>,
558 C<L</is_utf8_string_loc_flags>>,
559 C<L</is_utf8_string_loclen>>,
560 C<L</is_utf8_string_loclen_flags>>,
561 C<L</is_utf8_fixed_width_buf_flags>>,
562 C<L</is_utf8_fixed_width_buf_loc_flags>>,
563 C<L</is_utf8_fixed_width_buf_loclen_flags>>,
564 C<L</is_strict_utf8_string>>,
565 C<L</is_strict_utf8_string_loc>>,
566 C<L</is_strict_utf8_string_loclen>>,
567 C<L</is_c9strict_utf8_string>>,
568 C<L</is_c9strict_utf8_string_loc>>,
570 C<L</is_c9strict_utf8_string_loclen>>.
575 PERL_STATIC_INLINE bool
576 S_is_utf8_string_flags(const U8 *s, const STRLEN len, const U32 flags)
578 const U8* const send = s + (len ? len : strlen((const char *)s));
581 PERL_ARGS_ASSERT_IS_UTF8_STRING_FLAGS;
582 assert(0 == (flags & ~(UTF8_DISALLOW_ILLEGAL_INTERCHANGE
583 |UTF8_DISALLOW_ABOVE_31_BIT)));
586 return is_utf8_string(s, len);
589 if ((flags & ~UTF8_DISALLOW_ABOVE_31_BIT)
590 == UTF8_DISALLOW_ILLEGAL_INTERCHANGE)
592 return is_strict_utf8_string(s, len);
595 if ((flags & ~UTF8_DISALLOW_ABOVE_31_BIT)
596 == UTF8_DISALLOW_ILLEGAL_C9_INTERCHANGE)
598 return is_c9strict_utf8_string(s, len);
602 STRLEN cur_len = isUTF8_CHAR_flags(x, send, flags);
603 if (UNLIKELY(! cur_len)) {
614 =for apidoc is_utf8_string_loc
616 Like C<L</is_utf8_string>> but stores the location of the failure (in the
617 case of "utf8ness failure") or the location C<s>+C<len> (in the case of
618 "utf8ness success") in the C<ep> pointer.
620 See also C<L</is_utf8_string_loclen>>.
625 #define is_utf8_string_loc(s, len, ep) is_utf8_string_loclen(s, len, ep, 0)
629 =for apidoc is_utf8_string_loclen
631 Like C<L</is_utf8_string>> but stores the location of the failure (in the
632 case of "utf8ness failure") or the location C<s>+C<len> (in the case of
633 "utf8ness success") in the C<ep> pointer, and the number of UTF-8
634 encoded characters in the C<el> pointer.
636 See also C<L</is_utf8_string_loc>>.
641 PERL_STATIC_INLINE bool
642 Perl_is_utf8_string_loclen(const U8 *s, const STRLEN len, const U8 **ep, STRLEN *el)
644 const U8* const send = s + (len ? len : strlen((const char *)s));
648 PERL_ARGS_ASSERT_IS_UTF8_STRING_LOCLEN;
651 const STRLEN cur_len = isUTF8_CHAR(x, send);
652 if (UNLIKELY(! cur_len)) {
671 =for apidoc is_strict_utf8_string_loc
673 Like C<L</is_strict_utf8_string>> but stores the location of the failure (in the
674 case of "utf8ness failure") or the location C<s>+C<len> (in the case of
675 "utf8ness success") in the C<ep> pointer.
677 See also C<L</is_strict_utf8_string_loclen>>.
682 #define is_strict_utf8_string_loc(s, len, ep) \
683 is_strict_utf8_string_loclen(s, len, ep, 0)
687 =for apidoc is_strict_utf8_string_loclen
689 Like C<L</is_strict_utf8_string>> but stores the location of the failure (in the
690 case of "utf8ness failure") or the location C<s>+C<len> (in the case of
691 "utf8ness success") in the C<ep> pointer, and the number of UTF-8
692 encoded characters in the C<el> pointer.
694 See also C<L</is_strict_utf8_string_loc>>.
699 PERL_STATIC_INLINE bool
700 S_is_strict_utf8_string_loclen(const U8 *s, const STRLEN len, const U8 **ep, STRLEN *el)
702 const U8* const send = s + (len ? len : strlen((const char *)s));
706 PERL_ARGS_ASSERT_IS_STRICT_UTF8_STRING_LOCLEN;
709 const STRLEN cur_len = isSTRICT_UTF8_CHAR(x, send);
710 if (UNLIKELY(! cur_len)) {
729 =for apidoc is_c9strict_utf8_string_loc
731 Like C<L</is_c9strict_utf8_string>> but stores the location of the failure (in
732 the case of "utf8ness failure") or the location C<s>+C<len> (in the case of
733 "utf8ness success") in the C<ep> pointer.
735 See also C<L</is_c9strict_utf8_string_loclen>>.
740 #define is_c9strict_utf8_string_loc(s, len, ep) \
741 is_c9strict_utf8_string_loclen(s, len, ep, 0)
745 =for apidoc is_c9strict_utf8_string_loclen
747 Like C<L</is_c9strict_utf8_string>> but stores the location of the failure (in
748 the case of "utf8ness failure") or the location C<s>+C<len> (in the case of
749 "utf8ness success") in the C<ep> pointer, and the number of UTF-8 encoded
750 characters in the C<el> pointer.
752 See also C<L</is_c9strict_utf8_string_loc>>.
757 PERL_STATIC_INLINE bool
758 S_is_c9strict_utf8_string_loclen(const U8 *s, const STRLEN len, const U8 **ep, STRLEN *el)
760 const U8* const send = s + (len ? len : strlen((const char *)s));
764 PERL_ARGS_ASSERT_IS_C9STRICT_UTF8_STRING_LOCLEN;
767 const STRLEN cur_len = isC9_STRICT_UTF8_CHAR(x, send);
768 if (UNLIKELY(! cur_len)) {
787 =for apidoc is_utf8_string_loc_flags
789 Like C<L</is_utf8_string_flags>> but stores the location of the failure (in the
790 case of "utf8ness failure") or the location C<s>+C<len> (in the case of
791 "utf8ness success") in the C<ep> pointer.
793 See also C<L</is_utf8_string_loclen_flags>>.
798 #define is_utf8_string_loc_flags(s, len, ep, flags) \
799 is_utf8_string_loclen_flags(s, len, ep, 0, flags)
802 /* The above 3 actual functions could have been moved into the more general one
803 * just below, and made #defines that call it with the right 'flags'. They are
804 * currently kept separate to increase their chances of getting inlined */
808 =for apidoc is_utf8_string_loclen_flags
810 Like C<L</is_utf8_string_flags>> but stores the location of the failure (in the
811 case of "utf8ness failure") or the location C<s>+C<len> (in the case of
812 "utf8ness success") in the C<ep> pointer, and the number of UTF-8
813 encoded characters in the C<el> pointer.
815 See also C<L</is_utf8_string_loc_flags>>.
820 PERL_STATIC_INLINE bool
821 S_is_utf8_string_loclen_flags(const U8 *s, const STRLEN len, const U8 **ep, STRLEN *el, const U32 flags)
823 const U8* const send = s + (len ? len : strlen((const char *)s));
827 PERL_ARGS_ASSERT_IS_UTF8_STRING_LOCLEN_FLAGS;
828 assert(0 == (flags & ~(UTF8_DISALLOW_ILLEGAL_INTERCHANGE
829 |UTF8_DISALLOW_ABOVE_31_BIT)));
832 return is_utf8_string_loclen(s, len, ep, el);
835 if ((flags & ~UTF8_DISALLOW_ABOVE_31_BIT)
836 == UTF8_DISALLOW_ILLEGAL_INTERCHANGE)
838 return is_strict_utf8_string_loclen(s, len, ep, el);
841 if ((flags & ~UTF8_DISALLOW_ABOVE_31_BIT)
842 == UTF8_DISALLOW_ILLEGAL_C9_INTERCHANGE)
844 return is_c9strict_utf8_string_loclen(s, len, ep, el);
848 const STRLEN cur_len = isUTF8_CHAR_flags(x, send, flags);
849 if (UNLIKELY(! cur_len)) {
867 =for apidoc utf8_distance
869 Returns the number of UTF-8 characters between the UTF-8 pointers C<a>
872 WARNING: use only if you *know* that the pointers point inside the
878 PERL_STATIC_INLINE IV
879 Perl_utf8_distance(pTHX_ const U8 *a, const U8 *b)
881 PERL_ARGS_ASSERT_UTF8_DISTANCE;
883 return (a < b) ? -1 * (IV) utf8_length(a, b) : (IV) utf8_length(b, a);
889 Return the UTF-8 pointer C<s> displaced by C<off> characters, either
892 WARNING: do not use the following unless you *know* C<off> is within
893 the UTF-8 data pointed to by C<s> *and* that on entry C<s> is aligned
894 on the first byte of character or just after the last byte of a character.
899 PERL_STATIC_INLINE U8 *
900 Perl_utf8_hop(const U8 *s, SSize_t off)
902 PERL_ARGS_ASSERT_UTF8_HOP;
904 /* Note: cannot use UTF8_IS_...() too eagerly here since e.g
905 * the bitops (especially ~) can create illegal UTF-8.
906 * In other words: in Perl UTF-8 is not just for Unicode. */
915 while (UTF8_IS_CONTINUATION(*s))
923 =for apidoc utf8_hop_forward
925 Return the UTF-8 pointer C<s> displaced by up to C<off> characters,
928 C<off> must be non-negative.
930 C<s> must be before or equal to C<end>.
932 When moving forward it will not move beyond C<end>.
934 Will not exceed this limit even if the string is not valid "UTF-8".
939 PERL_STATIC_INLINE U8 *
940 Perl_utf8_hop_forward(const U8 *s, SSize_t off, const U8 *end)
942 PERL_ARGS_ASSERT_UTF8_HOP_FORWARD;
944 /* Note: cannot use UTF8_IS_...() too eagerly here since e.g
945 * the bitops (especially ~) can create illegal UTF-8.
946 * In other words: in Perl UTF-8 is not just for Unicode. */
952 STRLEN skip = UTF8SKIP(s);
953 if ((STRLEN)(end - s) <= skip)
962 =for apidoc utf8_hop_back
964 Return the UTF-8 pointer C<s> displaced by up to C<off> characters,
967 C<off> must be non-positive.
969 C<s> must be after or equal to C<start>.
971 When moving backward it will not move before C<start>.
973 Will not exceed this limit even if the string is not valid "UTF-8".
978 PERL_STATIC_INLINE U8 *
979 Perl_utf8_hop_back(const U8 *s, SSize_t off, const U8 *start)
981 PERL_ARGS_ASSERT_UTF8_HOP_BACK;
983 /* Note: cannot use UTF8_IS_...() too eagerly here since e.g
984 * the bitops (especially ~) can create illegal UTF-8.
985 * In other words: in Perl UTF-8 is not just for Unicode. */
990 while (off++ && s > start) {
992 while (UTF8_IS_CONTINUATION(*s) && s > start)
1000 =for apidoc utf8_hop_safe
1002 Return the UTF-8 pointer C<s> displaced by up to C<off> characters,
1003 either forward or backward.
1005 When moving backward it will not move before C<start>.
1007 When moving forward it will not move beyond C<end>.
1009 Will not exceed those limits even if the string is not valid "UTF-8".
1014 PERL_STATIC_INLINE U8 *
1015 Perl_utf8_hop_safe(const U8 *s, SSize_t off, const U8 *start, const U8 *end)
1017 PERL_ARGS_ASSERT_UTF8_HOP_SAFE;
1019 /* Note: cannot use UTF8_IS_...() too eagerly here since e.g
1020 * the bitops (especially ~) can create illegal UTF-8.
1021 * In other words: in Perl UTF-8 is not just for Unicode. */
1023 assert(start <= s && s <= end);
1026 return utf8_hop_forward(s, off, end);
1029 return utf8_hop_back(s, off, start);
1035 =for apidoc is_utf8_valid_partial_char
1037 Returns 0 if the sequence of bytes starting at C<s> and looking no further than
1038 S<C<e - 1>> is the UTF-8 encoding, as extended by Perl, for one or more code
1039 points. Otherwise, it returns 1 if there exists at least one non-empty
1040 sequence of bytes that when appended to sequence C<s>, starting at position
1041 C<e> causes the entire sequence to be the well-formed UTF-8 of some code point;
1042 otherwise returns 0.
1044 In other words this returns TRUE if C<s> points to a partial UTF-8-encoded code
1047 This is useful when a fixed-length buffer is being tested for being well-formed
1048 UTF-8, but the final few bytes in it don't comprise a full character; that is,
1049 it is split somewhere in the middle of the final code point's UTF-8
1050 representation. (Presumably when the buffer is refreshed with the next chunk
1051 of data, the new first bytes will complete the partial code point.) This
1052 function is used to verify that the final bytes in the current buffer are in
1053 fact the legal beginning of some code point, so that if they aren't, the
1054 failure can be signalled without having to wait for the next read.
1058 #define is_utf8_valid_partial_char(s, e) \
1059 is_utf8_valid_partial_char_flags(s, e, 0)
1063 =for apidoc is_utf8_valid_partial_char_flags
1065 Like C<L</is_utf8_valid_partial_char>>, it returns a boolean giving whether
1066 or not the input is a valid UTF-8 encoded partial character, but it takes an
1067 extra parameter, C<flags>, which can further restrict which code points are
1070 If C<flags> is 0, this behaves identically to
1071 C<L</is_utf8_valid_partial_char>>. Otherwise C<flags> can be any combination
1072 of the C<UTF8_DISALLOW_I<foo>> flags accepted by C<L</utf8n_to_uvchr>>. If
1073 there is any sequence of bytes that can complete the input partial character in
1074 such a way that a non-prohibited character is formed, the function returns
1075 TRUE; otherwise FALSE. Non character code points cannot be determined based on
1076 partial character input. But many of the other possible excluded types can be
1077 determined from just the first one or two bytes.
1082 PERL_STATIC_INLINE bool
1083 S_is_utf8_valid_partial_char_flags(const U8 * const s, const U8 * const e, const U32 flags)
1085 PERL_ARGS_ASSERT_IS_UTF8_VALID_PARTIAL_CHAR_FLAGS;
1087 assert(0 == (flags & ~(UTF8_DISALLOW_ILLEGAL_INTERCHANGE
1088 |UTF8_DISALLOW_ABOVE_31_BIT)));
1090 if (s >= e || s + UTF8SKIP(s) <= e) {
1094 return cBOOL(_is_utf8_char_helper(s, e, flags));
1099 =for apidoc is_utf8_fixed_width_buf_flags
1101 Returns TRUE if the fixed-width buffer starting at C<s> with length C<len>
1102 is entirely valid UTF-8, subject to the restrictions given by C<flags>;
1103 otherwise it returns FALSE.
1105 If C<flags> is 0, any well-formed UTF-8, as extended by Perl, is accepted
1106 without restriction. If the final few bytes of the buffer do not form a
1107 complete code point, this will return TRUE anyway, provided that
1108 C<L</is_utf8_valid_partial_char_flags>> returns TRUE for them.
1110 If C<flags> in non-zero, it can be any combination of the
1111 C<UTF8_DISALLOW_I<foo>> flags accepted by C<L</utf8n_to_uvchr>>, and with the
1114 This function differs from C<L</is_utf8_string_flags>> only in that the latter
1115 returns FALSE if the final few bytes of the string don't form a complete code
1120 #define is_utf8_fixed_width_buf_flags(s, len, flags) \
1121 is_utf8_fixed_width_buf_loclen_flags(s, len, 0, 0, flags)
1125 =for apidoc is_utf8_fixed_width_buf_loc_flags
1127 Like C<L</is_utf8_fixed_width_buf_flags>> but stores the location of the
1128 failure in the C<ep> pointer. If the function returns TRUE, C<*ep> will point
1129 to the beginning of any partial character at the end of the buffer; if there is
1130 no partial character C<*ep> will contain C<s>+C<len>.
1132 See also C<L</is_utf8_fixed_width_buf_loclen_flags>>.
1137 #define is_utf8_fixed_width_buf_loc_flags(s, len, loc, flags) \
1138 is_utf8_fixed_width_buf_loclen_flags(s, len, loc, 0, flags)
1142 =for apidoc is_utf8_fixed_width_buf_loclen_flags
1144 Like C<L</is_utf8_fixed_width_buf_loc_flags>> but stores the number of
1145 complete, valid characters found in the C<el> pointer.
1150 PERL_STATIC_INLINE bool
1151 S_is_utf8_fixed_width_buf_loclen_flags(const U8 * const s,
1157 const U8 * maybe_partial;
1159 PERL_ARGS_ASSERT_IS_UTF8_FIXED_WIDTH_BUF_LOCLEN_FLAGS;
1162 ep = &maybe_partial;
1165 /* If it's entirely valid, return that; otherwise see if the only error is
1166 * that the final few bytes are for a partial character */
1167 return is_utf8_string_loclen_flags(s, len, ep, el, flags)
1168 || is_utf8_valid_partial_char_flags(*ep, s + len, flags);
1171 /* ------------------------------- perl.h ----------------------------- */
1174 =head1 Miscellaneous Functions
1176 =for apidoc AiR|bool|is_safe_syscall|const char *pv|STRLEN len|const char *what|const char *op_name
1178 Test that the given C<pv> doesn't contain any internal C<NUL> characters.
1179 If it does, set C<errno> to C<ENOENT>, optionally warn, and return FALSE.
1181 Return TRUE if the name is safe.
1183 Used by the C<IS_SAFE_SYSCALL()> macro.
1188 PERL_STATIC_INLINE bool
1189 S_is_safe_syscall(pTHX_ const char *pv, STRLEN len, const char *what, const char *op_name) {
1190 /* While the Windows CE API provides only UCS-16 (or UTF-16) APIs
1191 * perl itself uses xce*() functions which accept 8-bit strings.
1194 PERL_ARGS_ASSERT_IS_SAFE_SYSCALL;
1198 if (UNLIKELY((null_at = (char *)memchr(pv, 0, len-1)) != NULL)) {
1199 SETERRNO(ENOENT, LIB_INVARG);
1200 Perl_ck_warner(aTHX_ packWARN(WARN_SYSCALLS),
1201 "Invalid \\0 character in %s for %s: %s\\0%s",
1202 what, op_name, pv, null_at+1);
1212 Return true if the supplied filename has a newline character
1213 immediately before the first (hopefully only) NUL.
1215 My original look at this incorrectly used the len from SvPV(), but
1216 that's incorrect, since we allow for a NUL in pv[len-1].
1218 So instead, strlen() and work from there.
1220 This allow for the user reading a filename, forgetting to chomp it,
1223 open my $foo, "$file\0";
1229 PERL_STATIC_INLINE bool
1230 S_should_warn_nl(const char *pv) {
1233 PERL_ARGS_ASSERT_SHOULD_WARN_NL;
1237 return len > 0 && pv[len-1] == '\n';
1242 /* ------------------ pp.c, regcomp.c, toke.c, universal.c ------------ */
1244 #define MAX_CHARSET_NAME_LENGTH 2
1246 PERL_STATIC_INLINE const char *
1247 get_regex_charset_name(const U32 flags, STRLEN* const lenp)
1249 /* Returns a string that corresponds to the name of the regex character set
1250 * given by 'flags', and *lenp is set the length of that string, which
1251 * cannot exceed MAX_CHARSET_NAME_LENGTH characters */
1254 switch (get_regex_charset(flags)) {
1255 case REGEX_DEPENDS_CHARSET: return DEPENDS_PAT_MODS;
1256 case REGEX_LOCALE_CHARSET: return LOCALE_PAT_MODS;
1257 case REGEX_UNICODE_CHARSET: return UNICODE_PAT_MODS;
1258 case REGEX_ASCII_RESTRICTED_CHARSET: return ASCII_RESTRICT_PAT_MODS;
1259 case REGEX_ASCII_MORE_RESTRICTED_CHARSET:
1261 return ASCII_MORE_RESTRICT_PAT_MODS;
1263 /* The NOT_REACHED; hides an assert() which has a rather complex
1264 * definition in perl.h. */
1265 NOT_REACHED; /* NOTREACHED */
1266 return "?"; /* Unknown */
1271 Return false if any get magic is on the SV other than taint magic.
1275 PERL_STATIC_INLINE bool
1276 S_sv_only_taint_gmagic(SV *sv) {
1277 MAGIC *mg = SvMAGIC(sv);
1279 PERL_ARGS_ASSERT_SV_ONLY_TAINT_GMAGIC;
1282 if (mg->mg_type != PERL_MAGIC_taint
1283 && !(mg->mg_flags & MGf_GSKIP)
1284 && mg->mg_virtual->svt_get) {
1287 mg = mg->mg_moremagic;
1293 /* ------------------ cop.h ------------------------------------------- */
1296 /* Enter a block. Push a new base context and return its address. */
1298 PERL_STATIC_INLINE PERL_CONTEXT *
1299 S_cx_pushblock(pTHX_ U8 type, U8 gimme, SV** sp, I32 saveix)
1303 PERL_ARGS_ASSERT_CX_PUSHBLOCK;
1308 cx->blk_gimme = gimme;
1309 cx->blk_oldsaveix = saveix;
1310 cx->blk_oldsp = (I32)(sp - PL_stack_base);
1311 cx->blk_oldcop = PL_curcop;
1312 cx->blk_oldmarksp = (I32)(PL_markstack_ptr - PL_markstack);
1313 cx->blk_oldscopesp = PL_scopestack_ix;
1314 cx->blk_oldpm = PL_curpm;
1315 cx->blk_old_tmpsfloor = PL_tmps_floor;
1317 PL_tmps_floor = PL_tmps_ix;
1318 CX_DEBUG(cx, "PUSH");
1323 /* Exit a block (RETURN and LAST). */
1325 PERL_STATIC_INLINE void
1326 S_cx_popblock(pTHX_ PERL_CONTEXT *cx)
1328 PERL_ARGS_ASSERT_CX_POPBLOCK;
1330 CX_DEBUG(cx, "POP");
1331 /* these 3 are common to cx_popblock and cx_topblock */
1332 PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp;
1333 PL_scopestack_ix = cx->blk_oldscopesp;
1334 PL_curpm = cx->blk_oldpm;
1336 /* LEAVE_SCOPE() should have made this true. /(?{})/ cheats
1337 * and leaves a CX entry lying around for repeated use, so
1338 * skip for multicall */ \
1339 assert( (CxTYPE(cx) == CXt_SUB && CxMULTICALL(cx))
1340 || PL_savestack_ix == cx->blk_oldsaveix);
1341 PL_curcop = cx->blk_oldcop;
1342 PL_tmps_floor = cx->blk_old_tmpsfloor;
1345 /* Continue a block elsewhere (e.g. NEXT, REDO, GOTO).
1346 * Whereas cx_popblock() restores the state to the point just before
1347 * cx_pushblock() was called, cx_topblock() restores it to the point just
1348 * *after* cx_pushblock() was called. */
1350 PERL_STATIC_INLINE void
1351 S_cx_topblock(pTHX_ PERL_CONTEXT *cx)
1353 PERL_ARGS_ASSERT_CX_TOPBLOCK;
1355 CX_DEBUG(cx, "TOP");
1356 /* these 3 are common to cx_popblock and cx_topblock */
1357 PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp;
1358 PL_scopestack_ix = cx->blk_oldscopesp;
1359 PL_curpm = cx->blk_oldpm;
1361 PL_stack_sp = PL_stack_base + cx->blk_oldsp;
1365 PERL_STATIC_INLINE void
1366 S_cx_pushsub(pTHX_ PERL_CONTEXT *cx, CV *cv, OP *retop, bool hasargs)
1368 U8 phlags = CX_PUSHSUB_GET_LVALUE_MASK(Perl_was_lvalue_sub);
1370 PERL_ARGS_ASSERT_CX_PUSHSUB;
1372 PERL_DTRACE_PROBE_ENTRY(cv);
1373 cx->blk_sub.cv = cv;
1374 cx->blk_sub.olddepth = CvDEPTH(cv);
1375 cx->blk_sub.prevcomppad = PL_comppad;
1376 cx->cx_type |= (hasargs) ? CXp_HASARGS : 0;
1377 cx->blk_sub.retop = retop;
1378 SvREFCNT_inc_simple_void_NN(cv);
1379 cx->blk_u16 = PL_op->op_private & (phlags|OPpDEREF);
1383 /* subsets of cx_popsub() */
1385 PERL_STATIC_INLINE void
1386 S_cx_popsub_common(pTHX_ PERL_CONTEXT *cx)
1390 PERL_ARGS_ASSERT_CX_POPSUB_COMMON;
1391 assert(CxTYPE(cx) == CXt_SUB);
1393 PL_comppad = cx->blk_sub.prevcomppad;
1394 PL_curpad = LIKELY(PL_comppad) ? AvARRAY(PL_comppad) : NULL;
1395 cv = cx->blk_sub.cv;
1396 CvDEPTH(cv) = cx->blk_sub.olddepth;
1397 cx->blk_sub.cv = NULL;
1402 /* handle the @_ part of leaving a sub */
1404 PERL_STATIC_INLINE void
1405 S_cx_popsub_args(pTHX_ PERL_CONTEXT *cx)
1409 PERL_ARGS_ASSERT_CX_POPSUB_ARGS;
1410 assert(CxTYPE(cx) == CXt_SUB);
1411 assert(AvARRAY(MUTABLE_AV(
1412 PadlistARRAY(CvPADLIST(cx->blk_sub.cv))[
1413 CvDEPTH(cx->blk_sub.cv)])) == PL_curpad);
1415 CX_POP_SAVEARRAY(cx);
1416 av = MUTABLE_AV(PAD_SVl(0));
1417 if (UNLIKELY(AvREAL(av)))
1418 /* abandon @_ if it got reified */
1419 clear_defarray(av, 0);
1426 PERL_STATIC_INLINE void
1427 S_cx_popsub(pTHX_ PERL_CONTEXT *cx)
1429 PERL_ARGS_ASSERT_CX_POPSUB;
1430 assert(CxTYPE(cx) == CXt_SUB);
1432 PERL_DTRACE_PROBE_RETURN(cx->blk_sub.cv);
1436 cx_popsub_common(cx);
1440 PERL_STATIC_INLINE void
1441 S_cx_pushformat(pTHX_ PERL_CONTEXT *cx, CV *cv, OP *retop, GV *gv)
1443 PERL_ARGS_ASSERT_CX_PUSHFORMAT;
1445 cx->blk_format.cv = cv;
1446 cx->blk_format.retop = retop;
1447 cx->blk_format.gv = gv;
1448 cx->blk_format.dfoutgv = PL_defoutgv;
1449 cx->blk_format.prevcomppad = PL_comppad;
1452 SvREFCNT_inc_simple_void_NN(cv);
1454 SvREFCNT_inc_void(cx->blk_format.dfoutgv);
1458 PERL_STATIC_INLINE void
1459 S_cx_popformat(pTHX_ PERL_CONTEXT *cx)
1464 PERL_ARGS_ASSERT_CX_POPFORMAT;
1465 assert(CxTYPE(cx) == CXt_FORMAT);
1467 dfout = cx->blk_format.dfoutgv;
1469 cx->blk_format.dfoutgv = NULL;
1470 SvREFCNT_dec_NN(dfout);
1472 PL_comppad = cx->blk_format.prevcomppad;
1473 PL_curpad = LIKELY(PL_comppad) ? AvARRAY(PL_comppad) : NULL;
1474 cv = cx->blk_format.cv;
1475 cx->blk_format.cv = NULL;
1477 SvREFCNT_dec_NN(cv);
1481 PERL_STATIC_INLINE void
1482 S_cx_pusheval(pTHX_ PERL_CONTEXT *cx, OP *retop, SV *namesv)
1484 PERL_ARGS_ASSERT_CX_PUSHEVAL;
1486 cx->blk_eval.retop = retop;
1487 cx->blk_eval.old_namesv = namesv;
1488 cx->blk_eval.old_eval_root = PL_eval_root;
1489 cx->blk_eval.cur_text = PL_parser ? PL_parser->linestr : NULL;
1490 cx->blk_eval.cv = NULL; /* later set by doeval_compile() */
1491 cx->blk_eval.cur_top_env = PL_top_env;
1493 assert(!(PL_in_eval & ~ 0x3F));
1494 assert(!(PL_op->op_type & ~0x1FF));
1495 cx->blk_u16 = (PL_in_eval & 0x3F) | ((U16)PL_op->op_type << 7);
1499 PERL_STATIC_INLINE void
1500 S_cx_popeval(pTHX_ PERL_CONTEXT *cx)
1504 PERL_ARGS_ASSERT_CX_POPEVAL;
1505 assert(CxTYPE(cx) == CXt_EVAL);
1507 PL_in_eval = CxOLD_IN_EVAL(cx);
1508 assert(!(PL_in_eval & 0xc0));
1509 PL_eval_root = cx->blk_eval.old_eval_root;
1510 sv = cx->blk_eval.cur_text;
1511 if (sv && CxEVAL_TXT_REFCNTED(cx)) {
1512 cx->blk_eval.cur_text = NULL;
1513 SvREFCNT_dec_NN(sv);
1516 sv = cx->blk_eval.old_namesv;
1518 cx->blk_eval.old_namesv = NULL;
1519 SvREFCNT_dec_NN(sv);
1524 /* push a plain loop, i.e.
1526 * while (cond) { block }
1527 * for (init;cond;continue) { block }
1528 * This loop can be last/redo'ed etc.
1531 PERL_STATIC_INLINE void
1532 S_cx_pushloop_plain(pTHX_ PERL_CONTEXT *cx)
1534 PERL_ARGS_ASSERT_CX_PUSHLOOP_PLAIN;
1535 cx->blk_loop.my_op = cLOOP;
1539 /* push a true for loop, i.e.
1540 * for var (list) { block }
1543 PERL_STATIC_INLINE void
1544 S_cx_pushloop_for(pTHX_ PERL_CONTEXT *cx, void *itervarp, SV* itersave)
1546 PERL_ARGS_ASSERT_CX_PUSHLOOP_FOR;
1548 /* this one line is common with cx_pushloop_plain */
1549 cx->blk_loop.my_op = cLOOP;
1551 cx->blk_loop.itervar_u.svp = (SV**)itervarp;
1552 cx->blk_loop.itersave = itersave;
1554 cx->blk_loop.oldcomppad = PL_comppad;
1559 /* pop all loop types, including plain */
1561 PERL_STATIC_INLINE void
1562 S_cx_poploop(pTHX_ PERL_CONTEXT *cx)
1564 PERL_ARGS_ASSERT_CX_POPLOOP;
1566 assert(CxTYPE_is_LOOP(cx));
1567 if ( CxTYPE(cx) == CXt_LOOP_ARY
1568 || CxTYPE(cx) == CXt_LOOP_LAZYSV)
1570 /* Free ary or cur. This assumes that state_u.ary.ary
1571 * aligns with state_u.lazysv.cur. See cx_dup() */
1572 SV *sv = cx->blk_loop.state_u.lazysv.cur;
1573 cx->blk_loop.state_u.lazysv.cur = NULL;
1574 SvREFCNT_dec_NN(sv);
1575 if (CxTYPE(cx) == CXt_LOOP_LAZYSV) {
1576 sv = cx->blk_loop.state_u.lazysv.end;
1577 cx->blk_loop.state_u.lazysv.end = NULL;
1578 SvREFCNT_dec_NN(sv);
1581 if (cx->cx_type & (CXp_FOR_PAD|CXp_FOR_GV)) {
1583 SV **svp = (cx)->blk_loop.itervar_u.svp;
1584 if ((cx->cx_type & CXp_FOR_GV))
1585 svp = &GvSV((GV*)svp);
1587 *svp = cx->blk_loop.itersave;
1588 cx->blk_loop.itersave = NULL;
1589 SvREFCNT_dec(cursv);
1594 PERL_STATIC_INLINE void
1595 S_cx_pushwhen(pTHX_ PERL_CONTEXT *cx)
1597 PERL_ARGS_ASSERT_CX_PUSHWHEN;
1599 cx->blk_givwhen.leave_op = cLOGOP->op_other;
1603 PERL_STATIC_INLINE void
1604 S_cx_popwhen(pTHX_ PERL_CONTEXT *cx)
1606 PERL_ARGS_ASSERT_CX_POPWHEN;
1607 assert(CxTYPE(cx) == CXt_WHEN);
1609 PERL_UNUSED_ARG(cx);
1610 PERL_UNUSED_CONTEXT;
1611 /* currently NOOP */
1615 PERL_STATIC_INLINE void
1616 S_cx_pushgiven(pTHX_ PERL_CONTEXT *cx, SV *orig_defsv)
1618 PERL_ARGS_ASSERT_CX_PUSHGIVEN;
1620 cx->blk_givwhen.leave_op = cLOGOP->op_other;
1621 cx->blk_givwhen.defsv_save = orig_defsv;
1625 PERL_STATIC_INLINE void
1626 S_cx_popgiven(pTHX_ PERL_CONTEXT *cx)
1630 PERL_ARGS_ASSERT_CX_POPGIVEN;
1631 assert(CxTYPE(cx) == CXt_GIVEN);
1633 sv = GvSV(PL_defgv);
1634 GvSV(PL_defgv) = cx->blk_givwhen.defsv_save;
1635 cx->blk_givwhen.defsv_save = NULL;
1640 * ex: set ts=8 sts=4 sw=4 et: