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)) {
401 Implemented as a macro in utf8.h
403 =for apidoc is_utf8_string_loc
405 Like C<L</is_utf8_string>> but stores the location of the failure (in the
406 case of "utf8ness failure") or the location C<s>+C<len> (in the case of
407 "utf8ness success") in the C<ep> pointer.
409 See also C<L</is_utf8_string_loclen>>.
411 =for apidoc is_utf8_string_loclen
413 Like C<L</is_utf8_string>> but stores the location of the failure (in the
414 case of "utf8ness failure") or the location C<s>+C<len> (in the case of
415 "utf8ness success") in the C<ep>, and the number of UTF-8
416 encoded characters in the C<el> pointer.
418 See also C<L</is_utf8_string_loc>>.
423 PERL_STATIC_INLINE bool
424 Perl_is_utf8_string_loclen(const U8 *s, const STRLEN len, const U8 **ep, STRLEN *el)
426 const U8* const send = s + (len ? len : strlen((const char *)s));
430 PERL_ARGS_ASSERT_IS_UTF8_STRING_LOCLEN;
433 const STRLEN cur_len = isUTF8_CHAR(x, send);
434 if (UNLIKELY(! cur_len)) {
452 =for apidoc utf8_distance
454 Returns the number of UTF-8 characters between the UTF-8 pointers C<a>
457 WARNING: use only if you *know* that the pointers point inside the
463 PERL_STATIC_INLINE IV
464 Perl_utf8_distance(pTHX_ const U8 *a, const U8 *b)
466 PERL_ARGS_ASSERT_UTF8_DISTANCE;
468 return (a < b) ? -1 * (IV) utf8_length(a, b) : (IV) utf8_length(b, a);
474 Return the UTF-8 pointer C<s> displaced by C<off> characters, either
477 WARNING: do not use the following unless you *know* C<off> is within
478 the UTF-8 data pointed to by C<s> *and* that on entry C<s> is aligned
479 on the first byte of character or just after the last byte of a character.
484 PERL_STATIC_INLINE U8 *
485 Perl_utf8_hop(const U8 *s, SSize_t off)
487 PERL_ARGS_ASSERT_UTF8_HOP;
489 /* Note: cannot use UTF8_IS_...() too eagerly here since e.g
490 * the bitops (especially ~) can create illegal UTF-8.
491 * In other words: in Perl UTF-8 is not just for Unicode. */
500 while (UTF8_IS_CONTINUATION(*s))
509 =for apidoc is_utf8_valid_partial_char
511 Returns 0 if the sequence of bytes starting at C<s> and looking no further than
512 S<C<e - 1>> is the UTF-8 encoding, as extended by Perl, for one or more code
513 points. Otherwise, it returns 1 if there exists at least one non-empty
514 sequence of bytes that when appended to sequence C<s>, starting at position
515 C<e> causes the entire sequence to be the well-formed UTF-8 of some code point;
518 In other words this returns TRUE if C<s> points to a partial UTF-8-encoded code
521 This is useful when a fixed-length buffer is being tested for being well-formed
522 UTF-8, but the final few bytes in it don't comprise a full character; that is,
523 it is split somewhere in the middle of the final code point's UTF-8
524 representation. (Presumably when the buffer is refreshed with the next chunk
525 of data, the new first bytes will complete the partial code point.) This
526 function is used to verify that the final bytes in the current buffer are in
527 fact the legal beginning of some code point, so that if they aren't, the
528 failure can be signalled without having to wait for the next read.
532 #define is_utf8_valid_partial_char(s, e) \
533 is_utf8_valid_partial_char_flags(s, e, 0)
537 =for apidoc is_utf8_valid_partial_char_flags
539 Like C<L</is_utf8_valid_partial_char>>, it returns a boolean giving whether
540 or not the input is a valid UTF-8 encoded partial character, but it takes an
541 extra parameter, C<flags>, which can further restrict which code points are
544 If C<flags> is 0, this behaves identically to
545 C<L</is_utf8_valid_partial_char>>. Otherwise C<flags> can be any combination
546 of the C<UTF8_DISALLOW_I<foo>> flags accepted by C<L</utf8n_to_uvchr>>. If
547 there is any sequence of bytes that can complete the input partial character in
548 such a way that a non-prohibited character is formed, the function returns
549 TRUE; otherwise FALSE. Non character code points cannot be determined based on
550 partial character input. But many of the other possible excluded types can be
551 determined from just the first one or two bytes.
556 PERL_STATIC_INLINE bool
557 S_is_utf8_valid_partial_char_flags(const U8 * const s, const U8 * const e, const U32 flags)
559 PERL_ARGS_ASSERT_IS_UTF8_VALID_PARTIAL_CHAR_FLAGS;
561 assert(0 == (flags & ~(UTF8_DISALLOW_ILLEGAL_INTERCHANGE
562 |UTF8_DISALLOW_ABOVE_31_BIT)));
564 if (s >= e || s + UTF8SKIP(s) <= e) {
568 return cBOOL(_is_utf8_char_helper(s, e, flags));
571 /* ------------------------------- perl.h ----------------------------- */
574 =head1 Miscellaneous Functions
576 =for apidoc AiR|bool|is_safe_syscall|const char *pv|STRLEN len|const char *what|const char *op_name
578 Test that the given C<pv> doesn't contain any internal C<NUL> characters.
579 If it does, set C<errno> to C<ENOENT>, optionally warn, and return FALSE.
581 Return TRUE if the name is safe.
583 Used by the C<IS_SAFE_SYSCALL()> macro.
588 PERL_STATIC_INLINE bool
589 S_is_safe_syscall(pTHX_ const char *pv, STRLEN len, const char *what, const char *op_name) {
590 /* While the Windows CE API provides only UCS-16 (or UTF-16) APIs
591 * perl itself uses xce*() functions which accept 8-bit strings.
594 PERL_ARGS_ASSERT_IS_SAFE_SYSCALL;
598 if (UNLIKELY((null_at = (char *)memchr(pv, 0, len-1)) != NULL)) {
599 SETERRNO(ENOENT, LIB_INVARG);
600 Perl_ck_warner(aTHX_ packWARN(WARN_SYSCALLS),
601 "Invalid \\0 character in %s for %s: %s\\0%s",
602 what, op_name, pv, null_at+1);
612 Return true if the supplied filename has a newline character
613 immediately before the first (hopefully only) NUL.
615 My original look at this incorrectly used the len from SvPV(), but
616 that's incorrect, since we allow for a NUL in pv[len-1].
618 So instead, strlen() and work from there.
620 This allow for the user reading a filename, forgetting to chomp it,
623 open my $foo, "$file\0";
629 PERL_STATIC_INLINE bool
630 S_should_warn_nl(const char *pv) {
633 PERL_ARGS_ASSERT_SHOULD_WARN_NL;
637 return len > 0 && pv[len-1] == '\n';
642 /* ------------------ pp.c, regcomp.c, toke.c, universal.c ------------ */
644 #define MAX_CHARSET_NAME_LENGTH 2
646 PERL_STATIC_INLINE const char *
647 get_regex_charset_name(const U32 flags, STRLEN* const lenp)
649 /* Returns a string that corresponds to the name of the regex character set
650 * given by 'flags', and *lenp is set the length of that string, which
651 * cannot exceed MAX_CHARSET_NAME_LENGTH characters */
654 switch (get_regex_charset(flags)) {
655 case REGEX_DEPENDS_CHARSET: return DEPENDS_PAT_MODS;
656 case REGEX_LOCALE_CHARSET: return LOCALE_PAT_MODS;
657 case REGEX_UNICODE_CHARSET: return UNICODE_PAT_MODS;
658 case REGEX_ASCII_RESTRICTED_CHARSET: return ASCII_RESTRICT_PAT_MODS;
659 case REGEX_ASCII_MORE_RESTRICTED_CHARSET:
661 return ASCII_MORE_RESTRICT_PAT_MODS;
663 /* The NOT_REACHED; hides an assert() which has a rather complex
664 * definition in perl.h. */
665 NOT_REACHED; /* NOTREACHED */
666 return "?"; /* Unknown */
671 Return false if any get magic is on the SV other than taint magic.
675 PERL_STATIC_INLINE bool
676 S_sv_only_taint_gmagic(SV *sv) {
677 MAGIC *mg = SvMAGIC(sv);
679 PERL_ARGS_ASSERT_SV_ONLY_TAINT_GMAGIC;
682 if (mg->mg_type != PERL_MAGIC_taint
683 && !(mg->mg_flags & MGf_GSKIP)
684 && mg->mg_virtual->svt_get) {
687 mg = mg->mg_moremagic;
693 /* ------------------ cop.h ------------------------------------------- */
696 /* Enter a block. Push a new base context and return its address. */
698 PERL_STATIC_INLINE PERL_CONTEXT *
699 S_cx_pushblock(pTHX_ U8 type, U8 gimme, SV** sp, I32 saveix)
703 PERL_ARGS_ASSERT_CX_PUSHBLOCK;
708 cx->blk_gimme = gimme;
709 cx->blk_oldsaveix = saveix;
710 cx->blk_oldsp = (I32)(sp - PL_stack_base);
711 cx->blk_oldcop = PL_curcop;
712 cx->blk_oldmarksp = (I32)(PL_markstack_ptr - PL_markstack);
713 cx->blk_oldscopesp = PL_scopestack_ix;
714 cx->blk_oldpm = PL_curpm;
715 cx->blk_old_tmpsfloor = PL_tmps_floor;
717 PL_tmps_floor = PL_tmps_ix;
718 CX_DEBUG(cx, "PUSH");
723 /* Exit a block (RETURN and LAST). */
725 PERL_STATIC_INLINE void
726 S_cx_popblock(pTHX_ PERL_CONTEXT *cx)
728 PERL_ARGS_ASSERT_CX_POPBLOCK;
731 /* these 3 are common to cx_popblock and cx_topblock */
732 PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp;
733 PL_scopestack_ix = cx->blk_oldscopesp;
734 PL_curpm = cx->blk_oldpm;
736 /* LEAVE_SCOPE() should have made this true. /(?{})/ cheats
737 * and leaves a CX entry lying around for repeated use, so
738 * skip for multicall */ \
739 assert( (CxTYPE(cx) == CXt_SUB && CxMULTICALL(cx))
740 || PL_savestack_ix == cx->blk_oldsaveix);
741 PL_curcop = cx->blk_oldcop;
742 PL_tmps_floor = cx->blk_old_tmpsfloor;
745 /* Continue a block elsewhere (e.g. NEXT, REDO, GOTO).
746 * Whereas cx_popblock() restores the state to the point just before
747 * cx_pushblock() was called, cx_topblock() restores it to the point just
748 * *after* cx_pushblock() was called. */
750 PERL_STATIC_INLINE void
751 S_cx_topblock(pTHX_ PERL_CONTEXT *cx)
753 PERL_ARGS_ASSERT_CX_TOPBLOCK;
756 /* these 3 are common to cx_popblock and cx_topblock */
757 PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp;
758 PL_scopestack_ix = cx->blk_oldscopesp;
759 PL_curpm = cx->blk_oldpm;
761 PL_stack_sp = PL_stack_base + cx->blk_oldsp;
765 PERL_STATIC_INLINE void
766 S_cx_pushsub(pTHX_ PERL_CONTEXT *cx, CV *cv, OP *retop, bool hasargs)
768 U8 phlags = CX_PUSHSUB_GET_LVALUE_MASK(Perl_was_lvalue_sub);
770 PERL_ARGS_ASSERT_CX_PUSHSUB;
772 PERL_DTRACE_PROBE_ENTRY(cv);
774 cx->blk_sub.olddepth = CvDEPTH(cv);
775 cx->blk_sub.prevcomppad = PL_comppad;
776 cx->cx_type |= (hasargs) ? CXp_HASARGS : 0;
777 cx->blk_sub.retop = retop;
778 SvREFCNT_inc_simple_void_NN(cv);
779 cx->blk_u16 = PL_op->op_private & (phlags|OPpDEREF);
783 /* subsets of cx_popsub() */
785 PERL_STATIC_INLINE void
786 S_cx_popsub_common(pTHX_ PERL_CONTEXT *cx)
790 PERL_ARGS_ASSERT_CX_POPSUB_COMMON;
791 assert(CxTYPE(cx) == CXt_SUB);
793 PL_comppad = cx->blk_sub.prevcomppad;
794 PL_curpad = LIKELY(PL_comppad) ? AvARRAY(PL_comppad) : NULL;
796 CvDEPTH(cv) = cx->blk_sub.olddepth;
797 cx->blk_sub.cv = NULL;
802 /* handle the @_ part of leaving a sub */
804 PERL_STATIC_INLINE void
805 S_cx_popsub_args(pTHX_ PERL_CONTEXT *cx)
809 PERL_ARGS_ASSERT_CX_POPSUB_ARGS;
810 assert(CxTYPE(cx) == CXt_SUB);
811 assert(AvARRAY(MUTABLE_AV(
812 PadlistARRAY(CvPADLIST(cx->blk_sub.cv))[
813 CvDEPTH(cx->blk_sub.cv)])) == PL_curpad);
815 CX_POP_SAVEARRAY(cx);
816 av = MUTABLE_AV(PAD_SVl(0));
817 if (UNLIKELY(AvREAL(av)))
818 /* abandon @_ if it got reified */
819 clear_defarray(av, 0);
826 PERL_STATIC_INLINE void
827 S_cx_popsub(pTHX_ PERL_CONTEXT *cx)
829 PERL_ARGS_ASSERT_CX_POPSUB;
830 assert(CxTYPE(cx) == CXt_SUB);
832 PERL_DTRACE_PROBE_RETURN(cx->blk_sub.cv);
836 cx_popsub_common(cx);
840 PERL_STATIC_INLINE void
841 S_cx_pushformat(pTHX_ PERL_CONTEXT *cx, CV *cv, OP *retop, GV *gv)
843 PERL_ARGS_ASSERT_CX_PUSHFORMAT;
845 cx->blk_format.cv = cv;
846 cx->blk_format.retop = retop;
847 cx->blk_format.gv = gv;
848 cx->blk_format.dfoutgv = PL_defoutgv;
849 cx->blk_format.prevcomppad = PL_comppad;
852 SvREFCNT_inc_simple_void_NN(cv);
854 SvREFCNT_inc_void(cx->blk_format.dfoutgv);
858 PERL_STATIC_INLINE void
859 S_cx_popformat(pTHX_ PERL_CONTEXT *cx)
864 PERL_ARGS_ASSERT_CX_POPFORMAT;
865 assert(CxTYPE(cx) == CXt_FORMAT);
867 dfout = cx->blk_format.dfoutgv;
869 cx->blk_format.dfoutgv = NULL;
870 SvREFCNT_dec_NN(dfout);
872 PL_comppad = cx->blk_format.prevcomppad;
873 PL_curpad = LIKELY(PL_comppad) ? AvARRAY(PL_comppad) : NULL;
874 cv = cx->blk_format.cv;
875 cx->blk_format.cv = NULL;
881 PERL_STATIC_INLINE void
882 S_cx_pusheval(pTHX_ PERL_CONTEXT *cx, OP *retop, SV *namesv)
884 PERL_ARGS_ASSERT_CX_PUSHEVAL;
886 cx->blk_eval.retop = retop;
887 cx->blk_eval.old_namesv = namesv;
888 cx->blk_eval.old_eval_root = PL_eval_root;
889 cx->blk_eval.cur_text = PL_parser ? PL_parser->linestr : NULL;
890 cx->blk_eval.cv = NULL; /* later set by doeval_compile() */
891 cx->blk_eval.cur_top_env = PL_top_env;
893 assert(!(PL_in_eval & ~ 0x7F));
894 assert(!(PL_op->op_type & ~0x1FF));
895 cx->blk_u16 = (PL_in_eval & 0x7F) | ((U16)PL_op->op_type << 7);
899 PERL_STATIC_INLINE void
900 S_cx_popeval(pTHX_ PERL_CONTEXT *cx)
904 PERL_ARGS_ASSERT_CX_POPEVAL;
905 assert(CxTYPE(cx) == CXt_EVAL);
907 PL_in_eval = CxOLD_IN_EVAL(cx);
908 PL_eval_root = cx->blk_eval.old_eval_root;
909 sv = cx->blk_eval.cur_text;
910 if (sv && SvSCREAM(sv)) {
911 cx->blk_eval.cur_text = NULL;
915 sv = cx->blk_eval.old_namesv;
917 cx->blk_eval.old_namesv = NULL;
923 /* push a plain loop, i.e.
925 * while (cond) { block }
926 * for (init;cond;continue) { block }
927 * This loop can be last/redo'ed etc.
930 PERL_STATIC_INLINE void
931 S_cx_pushloop_plain(pTHX_ PERL_CONTEXT *cx)
933 PERL_ARGS_ASSERT_CX_PUSHLOOP_PLAIN;
934 cx->blk_loop.my_op = cLOOP;
938 /* push a true for loop, i.e.
939 * for var (list) { block }
942 PERL_STATIC_INLINE void
943 S_cx_pushloop_for(pTHX_ PERL_CONTEXT *cx, void *itervarp, SV* itersave)
945 PERL_ARGS_ASSERT_CX_PUSHLOOP_FOR;
947 /* this one line is common with cx_pushloop_plain */
948 cx->blk_loop.my_op = cLOOP;
950 cx->blk_loop.itervar_u.svp = (SV**)itervarp;
951 cx->blk_loop.itersave = itersave;
953 cx->blk_loop.oldcomppad = PL_comppad;
958 /* pop all loop types, including plain */
960 PERL_STATIC_INLINE void
961 S_cx_poploop(pTHX_ PERL_CONTEXT *cx)
963 PERL_ARGS_ASSERT_CX_POPLOOP;
965 assert(CxTYPE_is_LOOP(cx));
966 if ( CxTYPE(cx) == CXt_LOOP_ARY
967 || CxTYPE(cx) == CXt_LOOP_LAZYSV)
969 /* Free ary or cur. This assumes that state_u.ary.ary
970 * aligns with state_u.lazysv.cur. See cx_dup() */
971 SV *sv = cx->blk_loop.state_u.lazysv.cur;
972 cx->blk_loop.state_u.lazysv.cur = NULL;
974 if (CxTYPE(cx) == CXt_LOOP_LAZYSV) {
975 sv = cx->blk_loop.state_u.lazysv.end;
976 cx->blk_loop.state_u.lazysv.end = NULL;
980 if (cx->cx_type & (CXp_FOR_PAD|CXp_FOR_GV)) {
982 SV **svp = (cx)->blk_loop.itervar_u.svp;
983 if ((cx->cx_type & CXp_FOR_GV))
984 svp = &GvSV((GV*)svp);
986 *svp = cx->blk_loop.itersave;
987 cx->blk_loop.itersave = NULL;
993 PERL_STATIC_INLINE void
994 S_cx_pushwhen(pTHX_ PERL_CONTEXT *cx)
996 PERL_ARGS_ASSERT_CX_PUSHWHEN;
998 cx->blk_givwhen.leave_op = cLOGOP->op_other;
1002 PERL_STATIC_INLINE void
1003 S_cx_popwhen(pTHX_ PERL_CONTEXT *cx)
1005 PERL_ARGS_ASSERT_CX_POPWHEN;
1006 assert(CxTYPE(cx) == CXt_WHEN);
1008 PERL_UNUSED_ARG(cx);
1009 PERL_UNUSED_CONTEXT;
1010 /* currently NOOP */
1014 PERL_STATIC_INLINE void
1015 S_cx_pushgiven(pTHX_ PERL_CONTEXT *cx, SV *orig_defsv)
1017 PERL_ARGS_ASSERT_CX_PUSHGIVEN;
1019 cx->blk_givwhen.leave_op = cLOGOP->op_other;
1020 cx->blk_givwhen.defsv_save = orig_defsv;
1024 PERL_STATIC_INLINE void
1025 S_cx_popgiven(pTHX_ PERL_CONTEXT *cx)
1029 PERL_ARGS_ASSERT_CX_POPGIVEN;
1030 assert(CxTYPE(cx) == CXt_GIVEN);
1032 sv = GvSV(PL_defgv);
1033 GvSV(PL_defgv) = cx->blk_givwhen.defsv_save;
1034 cx->blk_givwhen.defsv_save = NULL;
1039 * ex: set ts=8 sts=4 sw=4 et: