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 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 Code points above Unicode, surrogates, and non-character code points are
369 considered valid by this function.
371 See also L</is_utf8_invariant_string>(), L</is_utf8_string_loclen>(), and
372 L</is_utf8_string_loc>().
377 PERL_STATIC_INLINE bool
378 Perl_is_utf8_string(const U8 *s, const STRLEN len)
380 /* This is now marked pure in embed.fnc, because isUTF8_CHAR now is pure.
381 * Be aware of possible changes to that */
383 const U8* const send = s + (len ? len : strlen((const char *)s));
386 PERL_ARGS_ASSERT_IS_UTF8_STRING;
389 const STRLEN cur_len = isUTF8_CHAR(x, send);
390 if (UNLIKELY(! cur_len)) {
400 Implemented as a macro in utf8.h
402 =for apidoc is_utf8_string_loc
404 Like 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 L</is_utf8_string_loclen>() and L</is_utf8_string>().
410 =for apidoc is_utf8_string_loclen
412 Like L</is_utf8_string>() but stores the location of the failure (in the
413 case of "utf8ness failure") or the location C<s>+C<len> (in the case of
414 "utf8ness success") in the C<ep>, and the number of UTF-8
415 encoded characters in the C<el> pointer.
417 See also L</is_utf8_string_loc>() and L</is_utf8_string>().
422 PERL_STATIC_INLINE bool
423 Perl_is_utf8_string_loclen(const U8 *s, const STRLEN len, const U8 **ep, STRLEN *el)
425 const U8* const send = s + (len ? len : strlen((const char *)s));
429 PERL_ARGS_ASSERT_IS_UTF8_STRING_LOCLEN;
432 const STRLEN cur_len = isUTF8_CHAR(x, send);
433 if (UNLIKELY(! cur_len)) {
451 =for apidoc utf8_distance
453 Returns the number of UTF-8 characters between the UTF-8 pointers C<a>
456 WARNING: use only if you *know* that the pointers point inside the
462 PERL_STATIC_INLINE IV
463 Perl_utf8_distance(pTHX_ const U8 *a, const U8 *b)
465 PERL_ARGS_ASSERT_UTF8_DISTANCE;
467 return (a < b) ? -1 * (IV) utf8_length(a, b) : (IV) utf8_length(b, a);
473 Return the UTF-8 pointer C<s> displaced by C<off> characters, either
476 WARNING: do not use the following unless you *know* C<off> is within
477 the UTF-8 data pointed to by C<s> *and* that on entry C<s> is aligned
478 on the first byte of character or just after the last byte of a character.
483 PERL_STATIC_INLINE U8 *
484 Perl_utf8_hop(const U8 *s, SSize_t off)
486 PERL_ARGS_ASSERT_UTF8_HOP;
488 /* Note: cannot use UTF8_IS_...() too eagerly here since e.g
489 * the bitops (especially ~) can create illegal UTF-8.
490 * In other words: in Perl UTF-8 is not just for Unicode. */
499 while (UTF8_IS_CONTINUATION(*s))
508 =for apidoc is_utf8_valid_partial_char
510 Returns 0 if the sequence of bytes starting at C<s> and looking no further than
511 S<C<e - 1>> is the UTF-8 encoding, as extended by Perl, for one or more code
512 points. Otherwise, it returns 1 if there exists at least one non-empty
513 sequence of bytes that when appended to sequence C<s>, starting at position
514 C<e> causes the entire sequence to be the well-formed UTF-8 of some code point;
517 In other words this returns TRUE if C<s> points to a partial UTF-8-encoded code
520 This is useful when a fixed-length buffer is being tested for being well-formed
521 UTF-8, but the final few bytes in it don't comprise a full character; that is,
522 it is split somewhere in the middle of the final code point's UTF-8
523 representation. (Presumably when the buffer is refreshed with the next chunk
524 of data, the new first bytes will complete the partial code point.) This
525 function is used to verify that the final bytes in the current buffer are in
526 fact the legal beginning of some code point, so that if they aren't, the
527 failure can be signalled without having to wait for the next read.
531 #define is_utf8_valid_partial_char(s, e) is_utf8_valid_partial_char_flags(s, e, 0)
535 =for apidoc is_utf8_valid_partial_char_flags
537 Like C<L</is_utf8_valid_partial_char>>, it returns a boolean giving whether
538 or not the input is a valid UTF-8 encoded partial character, but it takes an
539 extra parameter, C<flags>, which can further restrict which code points are
542 If C<flags> is 0, this behaves identically to
543 C<L</is_utf8_valid_partial_char>>. Otherwise C<flags> can be any combination
544 of the C<UTF8_DISALLOW_I<foo>> flags accepted by C<L</utf8n_to_uvchr>>. If
545 there is any sequence of bytes that can complete the input partial character in
546 such a way that a non-prohibited character is formed, the function returns
547 TRUE; otherwise FALSE. Non characters cannot be determined based on partial
548 character input. But many of the other possible excluded types can be
549 determined from just the first one or two bytes.
554 PERL_STATIC_INLINE bool
555 S_is_utf8_valid_partial_char_flags(const U8 * const s, const U8 * const e, const U32 flags)
557 PERL_ARGS_ASSERT_IS_UTF8_VALID_PARTIAL_CHAR_FLAGS;
559 assert(0 == (flags & ~(UTF8_DISALLOW_ILLEGAL_INTERCHANGE
560 |UTF8_DISALLOW_ABOVE_31_BIT)));
562 if (s >= e || s + UTF8SKIP(s) <= e) {
566 return cBOOL(_is_utf8_char_helper(s, e, flags));
569 /* ------------------------------- perl.h ----------------------------- */
572 =head1 Miscellaneous Functions
574 =for apidoc AiR|bool|is_safe_syscall|const char *pv|STRLEN len|const char *what|const char *op_name
576 Test that the given C<pv> doesn't contain any internal C<NUL> characters.
577 If it does, set C<errno> to C<ENOENT>, optionally warn, and return FALSE.
579 Return TRUE if the name is safe.
581 Used by the C<IS_SAFE_SYSCALL()> macro.
586 PERL_STATIC_INLINE bool
587 S_is_safe_syscall(pTHX_ const char *pv, STRLEN len, const char *what, const char *op_name) {
588 /* While the Windows CE API provides only UCS-16 (or UTF-16) APIs
589 * perl itself uses xce*() functions which accept 8-bit strings.
592 PERL_ARGS_ASSERT_IS_SAFE_SYSCALL;
596 if (UNLIKELY((null_at = (char *)memchr(pv, 0, len-1)) != NULL)) {
597 SETERRNO(ENOENT, LIB_INVARG);
598 Perl_ck_warner(aTHX_ packWARN(WARN_SYSCALLS),
599 "Invalid \\0 character in %s for %s: %s\\0%s",
600 what, op_name, pv, null_at+1);
610 Return true if the supplied filename has a newline character
611 immediately before the first (hopefully only) NUL.
613 My original look at this incorrectly used the len from SvPV(), but
614 that's incorrect, since we allow for a NUL in pv[len-1].
616 So instead, strlen() and work from there.
618 This allow for the user reading a filename, forgetting to chomp it,
621 open my $foo, "$file\0";
627 PERL_STATIC_INLINE bool
628 S_should_warn_nl(const char *pv) {
631 PERL_ARGS_ASSERT_SHOULD_WARN_NL;
635 return len > 0 && pv[len-1] == '\n';
640 /* ------------------ pp.c, regcomp.c, toke.c, universal.c ------------ */
642 #define MAX_CHARSET_NAME_LENGTH 2
644 PERL_STATIC_INLINE const char *
645 get_regex_charset_name(const U32 flags, STRLEN* const lenp)
647 /* Returns a string that corresponds to the name of the regex character set
648 * given by 'flags', and *lenp is set the length of that string, which
649 * cannot exceed MAX_CHARSET_NAME_LENGTH characters */
652 switch (get_regex_charset(flags)) {
653 case REGEX_DEPENDS_CHARSET: return DEPENDS_PAT_MODS;
654 case REGEX_LOCALE_CHARSET: return LOCALE_PAT_MODS;
655 case REGEX_UNICODE_CHARSET: return UNICODE_PAT_MODS;
656 case REGEX_ASCII_RESTRICTED_CHARSET: return ASCII_RESTRICT_PAT_MODS;
657 case REGEX_ASCII_MORE_RESTRICTED_CHARSET:
659 return ASCII_MORE_RESTRICT_PAT_MODS;
661 /* The NOT_REACHED; hides an assert() which has a rather complex
662 * definition in perl.h. */
663 NOT_REACHED; /* NOTREACHED */
664 return "?"; /* Unknown */
669 Return false if any get magic is on the SV other than taint magic.
673 PERL_STATIC_INLINE bool
674 S_sv_only_taint_gmagic(SV *sv) {
675 MAGIC *mg = SvMAGIC(sv);
677 PERL_ARGS_ASSERT_SV_ONLY_TAINT_GMAGIC;
680 if (mg->mg_type != PERL_MAGIC_taint
681 && !(mg->mg_flags & MGf_GSKIP)
682 && mg->mg_virtual->svt_get) {
685 mg = mg->mg_moremagic;
691 /* ------------------ cop.h ------------------------------------------- */
694 /* Enter a block. Push a new base context and return its address. */
696 PERL_STATIC_INLINE PERL_CONTEXT *
697 S_cx_pushblock(pTHX_ U8 type, U8 gimme, SV** sp, I32 saveix)
701 PERL_ARGS_ASSERT_CX_PUSHBLOCK;
706 cx->blk_gimme = gimme;
707 cx->blk_oldsaveix = saveix;
708 cx->blk_oldsp = (I32)(sp - PL_stack_base);
709 cx->blk_oldcop = PL_curcop;
710 cx->blk_oldmarksp = (I32)(PL_markstack_ptr - PL_markstack);
711 cx->blk_oldscopesp = PL_scopestack_ix;
712 cx->blk_oldpm = PL_curpm;
713 cx->blk_old_tmpsfloor = PL_tmps_floor;
715 PL_tmps_floor = PL_tmps_ix;
716 CX_DEBUG(cx, "PUSH");
721 /* Exit a block (RETURN and LAST). */
723 PERL_STATIC_INLINE void
724 S_cx_popblock(pTHX_ PERL_CONTEXT *cx)
726 PERL_ARGS_ASSERT_CX_POPBLOCK;
729 /* these 3 are common to cx_popblock and cx_topblock */
730 PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp;
731 PL_scopestack_ix = cx->blk_oldscopesp;
732 PL_curpm = cx->blk_oldpm;
734 /* LEAVE_SCOPE() should have made this true. /(?{})/ cheats
735 * and leaves a CX entry lying around for repeated use, so
736 * skip for multicall */ \
737 assert( (CxTYPE(cx) == CXt_SUB && CxMULTICALL(cx))
738 || PL_savestack_ix == cx->blk_oldsaveix);
739 PL_curcop = cx->blk_oldcop;
740 PL_tmps_floor = cx->blk_old_tmpsfloor;
743 /* Continue a block elsewhere (e.g. NEXT, REDO, GOTO).
744 * Whereas cx_popblock() restores the state to the point just before
745 * cx_pushblock() was called, cx_topblock() restores it to the point just
746 * *after* cx_pushblock() was called. */
748 PERL_STATIC_INLINE void
749 S_cx_topblock(pTHX_ PERL_CONTEXT *cx)
751 PERL_ARGS_ASSERT_CX_TOPBLOCK;
754 /* these 3 are common to cx_popblock and cx_topblock */
755 PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp;
756 PL_scopestack_ix = cx->blk_oldscopesp;
757 PL_curpm = cx->blk_oldpm;
759 PL_stack_sp = PL_stack_base + cx->blk_oldsp;
763 PERL_STATIC_INLINE void
764 S_cx_pushsub(pTHX_ PERL_CONTEXT *cx, CV *cv, OP *retop, bool hasargs)
766 U8 phlags = CX_PUSHSUB_GET_LVALUE_MASK(Perl_was_lvalue_sub);
768 PERL_ARGS_ASSERT_CX_PUSHSUB;
770 PERL_DTRACE_PROBE_ENTRY(cv);
772 cx->blk_sub.olddepth = CvDEPTH(cv);
773 cx->blk_sub.prevcomppad = PL_comppad;
774 cx->cx_type |= (hasargs) ? CXp_HASARGS : 0;
775 cx->blk_sub.retop = retop;
776 SvREFCNT_inc_simple_void_NN(cv);
777 cx->blk_u16 = PL_op->op_private & (phlags|OPpDEREF);
781 /* subsets of cx_popsub() */
783 PERL_STATIC_INLINE void
784 S_cx_popsub_common(pTHX_ PERL_CONTEXT *cx)
788 PERL_ARGS_ASSERT_CX_POPSUB_COMMON;
789 assert(CxTYPE(cx) == CXt_SUB);
791 PL_comppad = cx->blk_sub.prevcomppad;
792 PL_curpad = LIKELY(PL_comppad) ? AvARRAY(PL_comppad) : NULL;
794 CvDEPTH(cv) = cx->blk_sub.olddepth;
795 cx->blk_sub.cv = NULL;
800 /* handle the @_ part of leaving a sub */
802 PERL_STATIC_INLINE void
803 S_cx_popsub_args(pTHX_ PERL_CONTEXT *cx)
807 PERL_ARGS_ASSERT_CX_POPSUB_ARGS;
808 assert(CxTYPE(cx) == CXt_SUB);
809 assert(AvARRAY(MUTABLE_AV(
810 PadlistARRAY(CvPADLIST(cx->blk_sub.cv))[
811 CvDEPTH(cx->blk_sub.cv)])) == PL_curpad);
813 CX_POP_SAVEARRAY(cx);
814 av = MUTABLE_AV(PAD_SVl(0));
815 if (UNLIKELY(AvREAL(av)))
816 /* abandon @_ if it got reified */
817 clear_defarray(av, 0);
824 PERL_STATIC_INLINE void
825 S_cx_popsub(pTHX_ PERL_CONTEXT *cx)
827 PERL_ARGS_ASSERT_CX_POPSUB;
828 assert(CxTYPE(cx) == CXt_SUB);
830 PERL_DTRACE_PROBE_RETURN(cx->blk_sub.cv);
834 cx_popsub_common(cx);
838 PERL_STATIC_INLINE void
839 S_cx_pushformat(pTHX_ PERL_CONTEXT *cx, CV *cv, OP *retop, GV *gv)
841 PERL_ARGS_ASSERT_CX_PUSHFORMAT;
843 cx->blk_format.cv = cv;
844 cx->blk_format.retop = retop;
845 cx->blk_format.gv = gv;
846 cx->blk_format.dfoutgv = PL_defoutgv;
847 cx->blk_format.prevcomppad = PL_comppad;
850 SvREFCNT_inc_simple_void_NN(cv);
852 SvREFCNT_inc_void(cx->blk_format.dfoutgv);
856 PERL_STATIC_INLINE void
857 S_cx_popformat(pTHX_ PERL_CONTEXT *cx)
862 PERL_ARGS_ASSERT_CX_POPFORMAT;
863 assert(CxTYPE(cx) == CXt_FORMAT);
865 dfout = cx->blk_format.dfoutgv;
867 cx->blk_format.dfoutgv = NULL;
868 SvREFCNT_dec_NN(dfout);
870 PL_comppad = cx->blk_format.prevcomppad;
871 PL_curpad = LIKELY(PL_comppad) ? AvARRAY(PL_comppad) : NULL;
872 cv = cx->blk_format.cv;
873 cx->blk_format.cv = NULL;
879 PERL_STATIC_INLINE void
880 S_cx_pusheval(pTHX_ PERL_CONTEXT *cx, OP *retop, SV *namesv)
882 PERL_ARGS_ASSERT_CX_PUSHEVAL;
884 cx->blk_eval.retop = retop;
885 cx->blk_eval.old_namesv = namesv;
886 cx->blk_eval.old_eval_root = PL_eval_root;
887 cx->blk_eval.cur_text = PL_parser ? PL_parser->linestr : NULL;
888 cx->blk_eval.cv = NULL; /* later set by doeval_compile() */
889 cx->blk_eval.cur_top_env = PL_top_env;
891 assert(!(PL_in_eval & ~ 0x7F));
892 assert(!(PL_op->op_type & ~0x1FF));
893 cx->blk_u16 = (PL_in_eval & 0x7F) | ((U16)PL_op->op_type << 7);
897 PERL_STATIC_INLINE void
898 S_cx_popeval(pTHX_ PERL_CONTEXT *cx)
902 PERL_ARGS_ASSERT_CX_POPEVAL;
903 assert(CxTYPE(cx) == CXt_EVAL);
905 PL_in_eval = CxOLD_IN_EVAL(cx);
906 PL_eval_root = cx->blk_eval.old_eval_root;
907 sv = cx->blk_eval.cur_text;
908 if (sv && SvSCREAM(sv)) {
909 cx->blk_eval.cur_text = NULL;
913 sv = cx->blk_eval.old_namesv;
915 cx->blk_eval.old_namesv = NULL;
921 /* push a plain loop, i.e.
923 * while (cond) { block }
924 * for (init;cond;continue) { block }
925 * This loop can be last/redo'ed etc.
928 PERL_STATIC_INLINE void
929 S_cx_pushloop_plain(pTHX_ PERL_CONTEXT *cx)
931 PERL_ARGS_ASSERT_CX_PUSHLOOP_PLAIN;
932 cx->blk_loop.my_op = cLOOP;
936 /* push a true for loop, i.e.
937 * for var (list) { block }
940 PERL_STATIC_INLINE void
941 S_cx_pushloop_for(pTHX_ PERL_CONTEXT *cx, void *itervarp, SV* itersave)
943 PERL_ARGS_ASSERT_CX_PUSHLOOP_FOR;
945 /* this one line is common with cx_pushloop_plain */
946 cx->blk_loop.my_op = cLOOP;
948 cx->blk_loop.itervar_u.svp = (SV**)itervarp;
949 cx->blk_loop.itersave = itersave;
951 cx->blk_loop.oldcomppad = PL_comppad;
956 /* pop all loop types, including plain */
958 PERL_STATIC_INLINE void
959 S_cx_poploop(pTHX_ PERL_CONTEXT *cx)
961 PERL_ARGS_ASSERT_CX_POPLOOP;
963 assert(CxTYPE_is_LOOP(cx));
964 if ( CxTYPE(cx) == CXt_LOOP_ARY
965 || CxTYPE(cx) == CXt_LOOP_LAZYSV)
967 /* Free ary or cur. This assumes that state_u.ary.ary
968 * aligns with state_u.lazysv.cur. See cx_dup() */
969 SV *sv = cx->blk_loop.state_u.lazysv.cur;
970 cx->blk_loop.state_u.lazysv.cur = NULL;
972 if (CxTYPE(cx) == CXt_LOOP_LAZYSV) {
973 sv = cx->blk_loop.state_u.lazysv.end;
974 cx->blk_loop.state_u.lazysv.end = NULL;
978 if (cx->cx_type & (CXp_FOR_PAD|CXp_FOR_GV)) {
980 SV **svp = (cx)->blk_loop.itervar_u.svp;
981 if ((cx->cx_type & CXp_FOR_GV))
982 svp = &GvSV((GV*)svp);
984 *svp = cx->blk_loop.itersave;
985 cx->blk_loop.itersave = NULL;
991 PERL_STATIC_INLINE void
992 S_cx_pushwhen(pTHX_ PERL_CONTEXT *cx)
994 PERL_ARGS_ASSERT_CX_PUSHWHEN;
996 cx->blk_givwhen.leave_op = cLOGOP->op_other;
1000 PERL_STATIC_INLINE void
1001 S_cx_popwhen(pTHX_ PERL_CONTEXT *cx)
1003 PERL_ARGS_ASSERT_CX_POPWHEN;
1004 assert(CxTYPE(cx) == CXt_WHEN);
1006 PERL_UNUSED_ARG(cx);
1007 PERL_UNUSED_CONTEXT;
1008 /* currently NOOP */
1012 PERL_STATIC_INLINE void
1013 S_cx_pushgiven(pTHX_ PERL_CONTEXT *cx, SV *orig_defsv)
1015 PERL_ARGS_ASSERT_CX_PUSHGIVEN;
1017 cx->blk_givwhen.leave_op = cLOGOP->op_other;
1018 cx->blk_givwhen.defsv_save = orig_defsv;
1022 PERL_STATIC_INLINE void
1023 S_cx_popgiven(pTHX_ PERL_CONTEXT *cx)
1027 PERL_ARGS_ASSERT_CX_POPGIVEN;
1028 assert(CxTYPE(cx) == CXt_GIVEN);
1030 sv = GvSV(PL_defgv);
1031 GvSV(PL_defgv) = cx->blk_givwhen.defsv_save;
1032 cx->blk_givwhen.defsv_save = NULL;
1037 * ex: set ts=8 sts=4 sw=4 et: