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).
337 See also L</is_utf8_string>(), L</is_utf8_string_loclen>(), and
338 L</is_utf8_string_loc>().
343 PERL_STATIC_INLINE bool
344 S_is_utf8_invariant_string(const U8* const s, const STRLEN len)
346 const U8* const send = s + (len ? len : strlen((const char *)s));
349 PERL_ARGS_ASSERT_IS_UTF8_INVARIANT_STRING;
351 for (; x < send; ++x) {
352 if (!UTF8_IS_INVARIANT(*x))
360 =for apidoc is_utf8_string
362 Returns TRUE if the first C<len> bytes of string C<s> form a valid
363 Perl-extended-UTF-8 string; returns FALSE otherwise. If C<len> is 0, it will
364 be calculated using C<strlen(s)> (which means if you use this option, that C<s>
365 can't have embedded C<NUL> characters and has to have a terminating C<NUL>
366 byte). Note that all characters being ASCII constitute 'a valid UTF-8 string'.
368 This function considers Perl's extended UTF-8 to be valid. That means that
369 code points above Unicode, surrogates, and non-character code points are
370 considered valid by this function.
372 See also L</is_utf8_invariant_string>(), L</is_utf8_string_loclen>(), and
373 L</is_utf8_string_loc>().
378 PERL_STATIC_INLINE bool
379 Perl_is_utf8_string(const U8 *s, const STRLEN len)
381 /* This is now marked pure in embed.fnc, because isUTF8_CHAR now is pure.
382 * Be aware of possible changes to that */
384 const U8* const send = s + (len ? len : strlen((const char *)s));
387 PERL_ARGS_ASSERT_IS_UTF8_STRING;
390 const STRLEN cur_len = isUTF8_CHAR(x, send);
391 if (UNLIKELY(! cur_len)) {
402 =for apidoc is_utf8_string_loc
404 Like C<L</is_utf8_string>> but stores the location of the failure (in the
405 case of "utf8ness failure") or the location C<s>+C<len> (in the case of
406 "utf8ness success") in the C<ep> pointer.
408 See also C<L</is_utf8_string_loclen>>.
413 #define is_utf8_string_loc(s, len, ep) is_utf8_string_loclen(s, len, ep, 0)
417 =for apidoc is_utf8_string_loclen
419 Like C<L</is_utf8_string>> but stores the location of the failure (in the
420 case of "utf8ness failure") or the location C<s>+C<len> (in the case of
421 "utf8ness success") in the C<ep>, and the number of UTF-8
422 encoded characters in the C<el> pointer.
424 See also C<L</is_utf8_string_loc>>.
429 PERL_STATIC_INLINE bool
430 Perl_is_utf8_string_loclen(const U8 *s, const STRLEN len, const U8 **ep, STRLEN *el)
432 const U8* const send = s + (len ? len : strlen((const char *)s));
436 PERL_ARGS_ASSERT_IS_UTF8_STRING_LOCLEN;
439 const STRLEN cur_len = isUTF8_CHAR(x, send);
440 if (UNLIKELY(! cur_len)) {
458 =for apidoc utf8_distance
460 Returns the number of UTF-8 characters between the UTF-8 pointers C<a>
463 WARNING: use only if you *know* that the pointers point inside the
469 PERL_STATIC_INLINE IV
470 Perl_utf8_distance(pTHX_ const U8 *a, const U8 *b)
472 PERL_ARGS_ASSERT_UTF8_DISTANCE;
474 return (a < b) ? -1 * (IV) utf8_length(a, b) : (IV) utf8_length(b, a);
480 Return the UTF-8 pointer C<s> displaced by C<off> characters, either
483 WARNING: do not use the following unless you *know* C<off> is within
484 the UTF-8 data pointed to by C<s> *and* that on entry C<s> is aligned
485 on the first byte of character or just after the last byte of a character.
490 PERL_STATIC_INLINE U8 *
491 Perl_utf8_hop(const U8 *s, SSize_t off)
493 PERL_ARGS_ASSERT_UTF8_HOP;
495 /* Note: cannot use UTF8_IS_...() too eagerly here since e.g
496 * the bitops (especially ~) can create illegal UTF-8.
497 * In other words: in Perl UTF-8 is not just for Unicode. */
506 while (UTF8_IS_CONTINUATION(*s))
515 =for apidoc is_utf8_valid_partial_char
517 Returns 0 if the sequence of bytes starting at C<s> and looking no further than
518 S<C<e - 1>> is the UTF-8 encoding, as extended by Perl, for one or more code
519 points. Otherwise, it returns 1 if there exists at least one non-empty
520 sequence of bytes that when appended to sequence C<s>, starting at position
521 C<e> causes the entire sequence to be the well-formed UTF-8 of some code point;
524 In other words this returns TRUE if C<s> points to a partial UTF-8-encoded code
527 This is useful when a fixed-length buffer is being tested for being well-formed
528 UTF-8, but the final few bytes in it don't comprise a full character; that is,
529 it is split somewhere in the middle of the final code point's UTF-8
530 representation. (Presumably when the buffer is refreshed with the next chunk
531 of data, the new first bytes will complete the partial code point.) This
532 function is used to verify that the final bytes in the current buffer are in
533 fact the legal beginning of some code point, so that if they aren't, the
534 failure can be signalled without having to wait for the next read.
538 #define is_utf8_valid_partial_char(s, e) \
539 is_utf8_valid_partial_char_flags(s, e, 0)
543 =for apidoc is_utf8_valid_partial_char_flags
545 Like C<L</is_utf8_valid_partial_char>>, it returns a boolean giving whether
546 or not the input is a valid UTF-8 encoded partial character, but it takes an
547 extra parameter, C<flags>, which can further restrict which code points are
550 If C<flags> is 0, this behaves identically to
551 C<L</is_utf8_valid_partial_char>>. Otherwise C<flags> can be any combination
552 of the C<UTF8_DISALLOW_I<foo>> flags accepted by C<L</utf8n_to_uvchr>>. If
553 there is any sequence of bytes that can complete the input partial character in
554 such a way that a non-prohibited character is formed, the function returns
555 TRUE; otherwise FALSE. Non character code points cannot be determined based on
556 partial character input. But many of the other possible excluded types can be
557 determined from just the first one or two bytes.
562 PERL_STATIC_INLINE bool
563 S_is_utf8_valid_partial_char_flags(const U8 * const s, const U8 * const e, const U32 flags)
565 PERL_ARGS_ASSERT_IS_UTF8_VALID_PARTIAL_CHAR_FLAGS;
567 assert(0 == (flags & ~(UTF8_DISALLOW_ILLEGAL_INTERCHANGE
568 |UTF8_DISALLOW_ABOVE_31_BIT)));
570 if (s >= e || s + UTF8SKIP(s) <= e) {
574 return cBOOL(_is_utf8_char_helper(s, e, flags));
577 /* ------------------------------- perl.h ----------------------------- */
580 =head1 Miscellaneous Functions
582 =for apidoc AiR|bool|is_safe_syscall|const char *pv|STRLEN len|const char *what|const char *op_name
584 Test that the given C<pv> doesn't contain any internal C<NUL> characters.
585 If it does, set C<errno> to C<ENOENT>, optionally warn, and return FALSE.
587 Return TRUE if the name is safe.
589 Used by the C<IS_SAFE_SYSCALL()> macro.
594 PERL_STATIC_INLINE bool
595 S_is_safe_syscall(pTHX_ const char *pv, STRLEN len, const char *what, const char *op_name) {
596 /* While the Windows CE API provides only UCS-16 (or UTF-16) APIs
597 * perl itself uses xce*() functions which accept 8-bit strings.
600 PERL_ARGS_ASSERT_IS_SAFE_SYSCALL;
604 if (UNLIKELY((null_at = (char *)memchr(pv, 0, len-1)) != NULL)) {
605 SETERRNO(ENOENT, LIB_INVARG);
606 Perl_ck_warner(aTHX_ packWARN(WARN_SYSCALLS),
607 "Invalid \\0 character in %s for %s: %s\\0%s",
608 what, op_name, pv, null_at+1);
618 Return true if the supplied filename has a newline character
619 immediately before the first (hopefully only) NUL.
621 My original look at this incorrectly used the len from SvPV(), but
622 that's incorrect, since we allow for a NUL in pv[len-1].
624 So instead, strlen() and work from there.
626 This allow for the user reading a filename, forgetting to chomp it,
629 open my $foo, "$file\0";
635 PERL_STATIC_INLINE bool
636 S_should_warn_nl(const char *pv) {
639 PERL_ARGS_ASSERT_SHOULD_WARN_NL;
643 return len > 0 && pv[len-1] == '\n';
648 /* ------------------ pp.c, regcomp.c, toke.c, universal.c ------------ */
650 #define MAX_CHARSET_NAME_LENGTH 2
652 PERL_STATIC_INLINE const char *
653 get_regex_charset_name(const U32 flags, STRLEN* const lenp)
655 /* Returns a string that corresponds to the name of the regex character set
656 * given by 'flags', and *lenp is set the length of that string, which
657 * cannot exceed MAX_CHARSET_NAME_LENGTH characters */
660 switch (get_regex_charset(flags)) {
661 case REGEX_DEPENDS_CHARSET: return DEPENDS_PAT_MODS;
662 case REGEX_LOCALE_CHARSET: return LOCALE_PAT_MODS;
663 case REGEX_UNICODE_CHARSET: return UNICODE_PAT_MODS;
664 case REGEX_ASCII_RESTRICTED_CHARSET: return ASCII_RESTRICT_PAT_MODS;
665 case REGEX_ASCII_MORE_RESTRICTED_CHARSET:
667 return ASCII_MORE_RESTRICT_PAT_MODS;
669 /* The NOT_REACHED; hides an assert() which has a rather complex
670 * definition in perl.h. */
671 NOT_REACHED; /* NOTREACHED */
672 return "?"; /* Unknown */
677 Return false if any get magic is on the SV other than taint magic.
681 PERL_STATIC_INLINE bool
682 S_sv_only_taint_gmagic(SV *sv) {
683 MAGIC *mg = SvMAGIC(sv);
685 PERL_ARGS_ASSERT_SV_ONLY_TAINT_GMAGIC;
688 if (mg->mg_type != PERL_MAGIC_taint
689 && !(mg->mg_flags & MGf_GSKIP)
690 && mg->mg_virtual->svt_get) {
693 mg = mg->mg_moremagic;
699 /* ------------------ cop.h ------------------------------------------- */
702 /* Enter a block. Push a new base context and return its address. */
704 PERL_STATIC_INLINE PERL_CONTEXT *
705 S_cx_pushblock(pTHX_ U8 type, U8 gimme, SV** sp, I32 saveix)
709 PERL_ARGS_ASSERT_CX_PUSHBLOCK;
714 cx->blk_gimme = gimme;
715 cx->blk_oldsaveix = saveix;
716 cx->blk_oldsp = (I32)(sp - PL_stack_base);
717 cx->blk_oldcop = PL_curcop;
718 cx->blk_oldmarksp = (I32)(PL_markstack_ptr - PL_markstack);
719 cx->blk_oldscopesp = PL_scopestack_ix;
720 cx->blk_oldpm = PL_curpm;
721 cx->blk_old_tmpsfloor = PL_tmps_floor;
723 PL_tmps_floor = PL_tmps_ix;
724 CX_DEBUG(cx, "PUSH");
729 /* Exit a block (RETURN and LAST). */
731 PERL_STATIC_INLINE void
732 S_cx_popblock(pTHX_ PERL_CONTEXT *cx)
734 PERL_ARGS_ASSERT_CX_POPBLOCK;
737 /* these 3 are common to cx_popblock and cx_topblock */
738 PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp;
739 PL_scopestack_ix = cx->blk_oldscopesp;
740 PL_curpm = cx->blk_oldpm;
742 /* LEAVE_SCOPE() should have made this true. /(?{})/ cheats
743 * and leaves a CX entry lying around for repeated use, so
744 * skip for multicall */ \
745 assert( (CxTYPE(cx) == CXt_SUB && CxMULTICALL(cx))
746 || PL_savestack_ix == cx->blk_oldsaveix);
747 PL_curcop = cx->blk_oldcop;
748 PL_tmps_floor = cx->blk_old_tmpsfloor;
751 /* Continue a block elsewhere (e.g. NEXT, REDO, GOTO).
752 * Whereas cx_popblock() restores the state to the point just before
753 * cx_pushblock() was called, cx_topblock() restores it to the point just
754 * *after* cx_pushblock() was called. */
756 PERL_STATIC_INLINE void
757 S_cx_topblock(pTHX_ PERL_CONTEXT *cx)
759 PERL_ARGS_ASSERT_CX_TOPBLOCK;
762 /* these 3 are common to cx_popblock and cx_topblock */
763 PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp;
764 PL_scopestack_ix = cx->blk_oldscopesp;
765 PL_curpm = cx->blk_oldpm;
767 PL_stack_sp = PL_stack_base + cx->blk_oldsp;
771 PERL_STATIC_INLINE void
772 S_cx_pushsub(pTHX_ PERL_CONTEXT *cx, CV *cv, OP *retop, bool hasargs)
774 U8 phlags = CX_PUSHSUB_GET_LVALUE_MASK(Perl_was_lvalue_sub);
776 PERL_ARGS_ASSERT_CX_PUSHSUB;
778 PERL_DTRACE_PROBE_ENTRY(cv);
780 cx->blk_sub.olddepth = CvDEPTH(cv);
781 cx->blk_sub.prevcomppad = PL_comppad;
782 cx->cx_type |= (hasargs) ? CXp_HASARGS : 0;
783 cx->blk_sub.retop = retop;
784 SvREFCNT_inc_simple_void_NN(cv);
785 cx->blk_u16 = PL_op->op_private & (phlags|OPpDEREF);
789 /* subsets of cx_popsub() */
791 PERL_STATIC_INLINE void
792 S_cx_popsub_common(pTHX_ PERL_CONTEXT *cx)
796 PERL_ARGS_ASSERT_CX_POPSUB_COMMON;
797 assert(CxTYPE(cx) == CXt_SUB);
799 PL_comppad = cx->blk_sub.prevcomppad;
800 PL_curpad = LIKELY(PL_comppad) ? AvARRAY(PL_comppad) : NULL;
802 CvDEPTH(cv) = cx->blk_sub.olddepth;
803 cx->blk_sub.cv = NULL;
808 /* handle the @_ part of leaving a sub */
810 PERL_STATIC_INLINE void
811 S_cx_popsub_args(pTHX_ PERL_CONTEXT *cx)
815 PERL_ARGS_ASSERT_CX_POPSUB_ARGS;
816 assert(CxTYPE(cx) == CXt_SUB);
817 assert(AvARRAY(MUTABLE_AV(
818 PadlistARRAY(CvPADLIST(cx->blk_sub.cv))[
819 CvDEPTH(cx->blk_sub.cv)])) == PL_curpad);
821 CX_POP_SAVEARRAY(cx);
822 av = MUTABLE_AV(PAD_SVl(0));
823 if (UNLIKELY(AvREAL(av)))
824 /* abandon @_ if it got reified */
825 clear_defarray(av, 0);
832 PERL_STATIC_INLINE void
833 S_cx_popsub(pTHX_ PERL_CONTEXT *cx)
835 PERL_ARGS_ASSERT_CX_POPSUB;
836 assert(CxTYPE(cx) == CXt_SUB);
838 PERL_DTRACE_PROBE_RETURN(cx->blk_sub.cv);
842 cx_popsub_common(cx);
846 PERL_STATIC_INLINE void
847 S_cx_pushformat(pTHX_ PERL_CONTEXT *cx, CV *cv, OP *retop, GV *gv)
849 PERL_ARGS_ASSERT_CX_PUSHFORMAT;
851 cx->blk_format.cv = cv;
852 cx->blk_format.retop = retop;
853 cx->blk_format.gv = gv;
854 cx->blk_format.dfoutgv = PL_defoutgv;
855 cx->blk_format.prevcomppad = PL_comppad;
858 SvREFCNT_inc_simple_void_NN(cv);
860 SvREFCNT_inc_void(cx->blk_format.dfoutgv);
864 PERL_STATIC_INLINE void
865 S_cx_popformat(pTHX_ PERL_CONTEXT *cx)
870 PERL_ARGS_ASSERT_CX_POPFORMAT;
871 assert(CxTYPE(cx) == CXt_FORMAT);
873 dfout = cx->blk_format.dfoutgv;
875 cx->blk_format.dfoutgv = NULL;
876 SvREFCNT_dec_NN(dfout);
878 PL_comppad = cx->blk_format.prevcomppad;
879 PL_curpad = LIKELY(PL_comppad) ? AvARRAY(PL_comppad) : NULL;
880 cv = cx->blk_format.cv;
881 cx->blk_format.cv = NULL;
887 PERL_STATIC_INLINE void
888 S_cx_pusheval(pTHX_ PERL_CONTEXT *cx, OP *retop, SV *namesv)
890 PERL_ARGS_ASSERT_CX_PUSHEVAL;
892 cx->blk_eval.retop = retop;
893 cx->blk_eval.old_namesv = namesv;
894 cx->blk_eval.old_eval_root = PL_eval_root;
895 cx->blk_eval.cur_text = PL_parser ? PL_parser->linestr : NULL;
896 cx->blk_eval.cv = NULL; /* later set by doeval_compile() */
897 cx->blk_eval.cur_top_env = PL_top_env;
899 assert(!(PL_in_eval & ~ 0x7F));
900 assert(!(PL_op->op_type & ~0x1FF));
901 cx->blk_u16 = (PL_in_eval & 0x7F) | ((U16)PL_op->op_type << 7);
905 PERL_STATIC_INLINE void
906 S_cx_popeval(pTHX_ PERL_CONTEXT *cx)
910 PERL_ARGS_ASSERT_CX_POPEVAL;
911 assert(CxTYPE(cx) == CXt_EVAL);
913 PL_in_eval = CxOLD_IN_EVAL(cx);
914 PL_eval_root = cx->blk_eval.old_eval_root;
915 sv = cx->blk_eval.cur_text;
916 if (sv && SvSCREAM(sv)) {
917 cx->blk_eval.cur_text = NULL;
921 sv = cx->blk_eval.old_namesv;
923 cx->blk_eval.old_namesv = NULL;
929 /* push a plain loop, i.e.
931 * while (cond) { block }
932 * for (init;cond;continue) { block }
933 * This loop can be last/redo'ed etc.
936 PERL_STATIC_INLINE void
937 S_cx_pushloop_plain(pTHX_ PERL_CONTEXT *cx)
939 PERL_ARGS_ASSERT_CX_PUSHLOOP_PLAIN;
940 cx->blk_loop.my_op = cLOOP;
944 /* push a true for loop, i.e.
945 * for var (list) { block }
948 PERL_STATIC_INLINE void
949 S_cx_pushloop_for(pTHX_ PERL_CONTEXT *cx, void *itervarp, SV* itersave)
951 PERL_ARGS_ASSERT_CX_PUSHLOOP_FOR;
953 /* this one line is common with cx_pushloop_plain */
954 cx->blk_loop.my_op = cLOOP;
956 cx->blk_loop.itervar_u.svp = (SV**)itervarp;
957 cx->blk_loop.itersave = itersave;
959 cx->blk_loop.oldcomppad = PL_comppad;
964 /* pop all loop types, including plain */
966 PERL_STATIC_INLINE void
967 S_cx_poploop(pTHX_ PERL_CONTEXT *cx)
969 PERL_ARGS_ASSERT_CX_POPLOOP;
971 assert(CxTYPE_is_LOOP(cx));
972 if ( CxTYPE(cx) == CXt_LOOP_ARY
973 || CxTYPE(cx) == CXt_LOOP_LAZYSV)
975 /* Free ary or cur. This assumes that state_u.ary.ary
976 * aligns with state_u.lazysv.cur. See cx_dup() */
977 SV *sv = cx->blk_loop.state_u.lazysv.cur;
978 cx->blk_loop.state_u.lazysv.cur = NULL;
980 if (CxTYPE(cx) == CXt_LOOP_LAZYSV) {
981 sv = cx->blk_loop.state_u.lazysv.end;
982 cx->blk_loop.state_u.lazysv.end = NULL;
986 if (cx->cx_type & (CXp_FOR_PAD|CXp_FOR_GV)) {
988 SV **svp = (cx)->blk_loop.itervar_u.svp;
989 if ((cx->cx_type & CXp_FOR_GV))
990 svp = &GvSV((GV*)svp);
992 *svp = cx->blk_loop.itersave;
993 cx->blk_loop.itersave = NULL;
999 PERL_STATIC_INLINE void
1000 S_cx_pushwhen(pTHX_ PERL_CONTEXT *cx)
1002 PERL_ARGS_ASSERT_CX_PUSHWHEN;
1004 cx->blk_givwhen.leave_op = cLOGOP->op_other;
1008 PERL_STATIC_INLINE void
1009 S_cx_popwhen(pTHX_ PERL_CONTEXT *cx)
1011 PERL_ARGS_ASSERT_CX_POPWHEN;
1012 assert(CxTYPE(cx) == CXt_WHEN);
1014 PERL_UNUSED_ARG(cx);
1015 PERL_UNUSED_CONTEXT;
1016 /* currently NOOP */
1020 PERL_STATIC_INLINE void
1021 S_cx_pushgiven(pTHX_ PERL_CONTEXT *cx, SV *orig_defsv)
1023 PERL_ARGS_ASSERT_CX_PUSHGIVEN;
1025 cx->blk_givwhen.leave_op = cLOGOP->op_other;
1026 cx->blk_givwhen.defsv_save = orig_defsv;
1030 PERL_STATIC_INLINE void
1031 S_cx_popgiven(pTHX_ PERL_CONTEXT *cx)
1035 PERL_ARGS_ASSERT_CX_POPGIVEN;
1036 assert(CxTYPE(cx) == CXt_GIVEN);
1038 sv = GvSV(PL_defgv);
1039 GvSV(PL_defgv) = cx->blk_givwhen.defsv_save;
1040 cx->blk_givwhen.defsv_save = NULL;
1045 * ex: set ts=8 sts=4 sw=4 et: