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 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 iff 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). That is, if they are UTF-8 invariant. On ASCII-ish
329 machines, all the ASCII characters and only the ASCII characters fit this
330 definition. On EBCDIC machines, the ASCII-range characters are invariant, but
331 so also are the C1 controls and C<\c?> (which isn't in the ASCII range on
334 If C<len> is 0, it will be calculated using C<strlen(s)>, (which means if you
335 use this option, that C<s> can't have embedded C<NUL> characters and has to
336 have a terminating C<NUL> byte).
338 See also L</is_utf8_string>(), L</is_utf8_string_loclen>(), and
339 L</is_utf8_string_loc>().
344 PERL_STATIC_INLINE bool
345 S_is_utf8_invariant_string(const U8* const s, const STRLEN len)
347 const U8* const send = s + (len ? len : strlen((const char *)s));
350 PERL_ARGS_ASSERT_IS_UTF8_INVARIANT_STRING;
352 for (; x < send; ++x) {
353 if (!UTF8_IS_INVARIANT(*x))
361 =for apidoc is_utf8_string
363 Returns true if the first C<len> bytes of string C<s> form a valid
364 UTF-8 string, false otherwise. If C<len> is 0, it will be calculated
365 using C<strlen(s)> (which means if you use this option, that C<s> can't have
366 embedded C<NUL> characters and has to have a terminating C<NUL> byte). Note
367 that all characters being ASCII constitute 'a valid UTF-8 string'.
369 See also L</is_utf8_invariant_string>(), L</is_utf8_string_loclen>(), and
370 L</is_utf8_string_loc>().
375 PERL_STATIC_INLINE bool
376 Perl_is_utf8_string(const U8 *s, STRLEN len)
378 /* This is now marked pure in embed.fnc, because isUTF8_CHAR now is pure.
379 * Be aware of possible changes to that */
381 const U8* const send = s + (len ? len : strlen((const char *)s));
384 PERL_ARGS_ASSERT_IS_UTF8_STRING;
387 STRLEN len = isUTF8_CHAR(x, send);
388 if (UNLIKELY(! len)) {
398 Implemented as a macro in utf8.h
400 =for apidoc is_utf8_string_loc
402 Like L</is_utf8_string> but stores the location of the failure (in the
403 case of "utf8ness failure") or the location C<s>+C<len> (in the case of
404 "utf8ness success") in the C<ep>.
406 See also L</is_utf8_string_loclen>() and L</is_utf8_string>().
408 =for apidoc is_utf8_string_loclen
410 Like L</is_utf8_string>() but stores the location of the failure (in the
411 case of "utf8ness failure") or the location C<s>+C<len> (in the case of
412 "utf8ness success") in the C<ep>, and the number of UTF-8
413 encoded characters in the C<el>.
415 See also L</is_utf8_string_loc>() and L</is_utf8_string>().
420 PERL_STATIC_INLINE bool
421 Perl_is_utf8_string_loclen(const U8 *s, STRLEN len, const U8 **ep, STRLEN *el)
423 const U8* const send = s + (len ? len : strlen((const char *)s));
427 PERL_ARGS_ASSERT_IS_UTF8_STRING_LOCLEN;
430 STRLEN len = isUTF8_CHAR(x, send);
431 if (UNLIKELY(! len)) {
449 =for apidoc utf8_distance
451 Returns the number of UTF-8 characters between the UTF-8 pointers C<a>
454 WARNING: use only if you *know* that the pointers point inside the
460 PERL_STATIC_INLINE IV
461 Perl_utf8_distance(pTHX_ const U8 *a, const U8 *b)
463 PERL_ARGS_ASSERT_UTF8_DISTANCE;
465 return (a < b) ? -1 * (IV) utf8_length(a, b) : (IV) utf8_length(b, a);
471 Return the UTF-8 pointer C<s> displaced by C<off> characters, either
474 WARNING: do not use the following unless you *know* C<off> is within
475 the UTF-8 data pointed to by C<s> *and* that on entry C<s> is aligned
476 on the first byte of character or just after the last byte of a character.
481 PERL_STATIC_INLINE U8 *
482 Perl_utf8_hop(const U8 *s, SSize_t off)
484 PERL_ARGS_ASSERT_UTF8_HOP;
486 /* Note: cannot use UTF8_IS_...() too eagerly here since e.g
487 * the bitops (especially ~) can create illegal UTF-8.
488 * In other words: in Perl UTF-8 is not just for Unicode. */
497 while (UTF8_IS_CONTINUATION(*s))
506 =for apidoc is_utf8_valid_partial_char
508 Returns 0 if the sequence of bytes starting at C<s> and looking no further than
509 S<C<e - 1>> is the UTF-8 encoding, as extended by Perl, for one or more code
510 points. Otherwise, it returns 1 if there exists at least one non-empty
511 sequence of bytes that when appended to sequence C<s>, starting at position
512 C<e> causes the entire sequence to be the well-formed UTF-8 of some code point;
515 In other words this returns TRUE if C<s> points to a partial UTF-8-encoded code
518 This is useful when a fixed-length buffer is being tested for being well-formed
519 UTF-8, but the final few bytes in it don't comprise a full character; that is,
520 it is split somewhere in the middle of the final code point's UTF-8
521 representation. (Presumably when the buffer is refreshed with the next chunk
522 of data, the new first bytes will complete the partial code point.) This
523 function is used to verify that the final bytes in the current buffer are in
524 fact the legal beginning of some code point, so that if they aren't, the
525 failure can be signalled without having to wait for the next read.
529 #define is_utf8_valid_partial_char(s, e) is_utf8_valid_partial_char_flags(s, e, 0)
533 =for apidoc is_utf8_valid_partial_char_flags
535 Like C<L</is_utf8_valid_partial_char>>, it returns a boolean giving whether
536 or not the input is a valid UTF-8 encoded partial character, but it takes an
537 extra parameter, C<flags>, which can further restrict which code points are
540 If C<flags> is 0, this behaves identically to
541 C<L</is_utf8_valid_partial_char>>. Otherwise C<flags> can be any combination
542 of the C<UTF8_DISALLOW_I<foo>> flags accepted by C<L</utf8n_to_uvchr>>. If
543 there is any sequence of bytes that can complete the input partial character in
544 such a way that a non-prohibited character is formed, the function returns
545 TRUE; otherwise FALSE. Non characters cannot be determined based on partial
546 character input. But many of the other possible excluded types can be
547 determined from just the first one or two bytes.
552 PERL_STATIC_INLINE bool
553 S_is_utf8_valid_partial_char_flags(const U8 * const s, const U8 * const e, const U32 flags)
555 PERL_ARGS_ASSERT_IS_UTF8_VALID_PARTIAL_CHAR_FLAGS;
557 assert(0 == (flags & ~(UTF8_DISALLOW_ILLEGAL_INTERCHANGE
558 |UTF8_DISALLOW_ABOVE_31_BIT)));
560 if (s >= e || s + UTF8SKIP(s) <= e) {
564 return cBOOL(_is_utf8_char_helper(s, e, flags));
567 /* ------------------------------- perl.h ----------------------------- */
570 =head1 Miscellaneous Functions
572 =for apidoc AiR|bool|is_safe_syscall|const char *pv|STRLEN len|const char *what|const char *op_name
574 Test that the given C<pv> doesn't contain any internal C<NUL> characters.
575 If it does, set C<errno> to C<ENOENT>, optionally warn, and return FALSE.
577 Return TRUE if the name is safe.
579 Used by the C<IS_SAFE_SYSCALL()> macro.
584 PERL_STATIC_INLINE bool
585 S_is_safe_syscall(pTHX_ const char *pv, STRLEN len, const char *what, const char *op_name) {
586 /* While the Windows CE API provides only UCS-16 (or UTF-16) APIs
587 * perl itself uses xce*() functions which accept 8-bit strings.
590 PERL_ARGS_ASSERT_IS_SAFE_SYSCALL;
594 if (UNLIKELY((null_at = (char *)memchr(pv, 0, len-1)) != NULL)) {
595 SETERRNO(ENOENT, LIB_INVARG);
596 Perl_ck_warner(aTHX_ packWARN(WARN_SYSCALLS),
597 "Invalid \\0 character in %s for %s: %s\\0%s",
598 what, op_name, pv, null_at+1);
608 Return true if the supplied filename has a newline character
609 immediately before the first (hopefully only) NUL.
611 My original look at this incorrectly used the len from SvPV(), but
612 that's incorrect, since we allow for a NUL in pv[len-1].
614 So instead, strlen() and work from there.
616 This allow for the user reading a filename, forgetting to chomp it,
619 open my $foo, "$file\0";
625 PERL_STATIC_INLINE bool
626 S_should_warn_nl(const char *pv) {
629 PERL_ARGS_ASSERT_SHOULD_WARN_NL;
633 return len > 0 && pv[len-1] == '\n';
638 /* ------------------ pp.c, regcomp.c, toke.c, universal.c ------------ */
640 #define MAX_CHARSET_NAME_LENGTH 2
642 PERL_STATIC_INLINE const char *
643 get_regex_charset_name(const U32 flags, STRLEN* const lenp)
645 /* Returns a string that corresponds to the name of the regex character set
646 * given by 'flags', and *lenp is set the length of that string, which
647 * cannot exceed MAX_CHARSET_NAME_LENGTH characters */
650 switch (get_regex_charset(flags)) {
651 case REGEX_DEPENDS_CHARSET: return DEPENDS_PAT_MODS;
652 case REGEX_LOCALE_CHARSET: return LOCALE_PAT_MODS;
653 case REGEX_UNICODE_CHARSET: return UNICODE_PAT_MODS;
654 case REGEX_ASCII_RESTRICTED_CHARSET: return ASCII_RESTRICT_PAT_MODS;
655 case REGEX_ASCII_MORE_RESTRICTED_CHARSET:
657 return ASCII_MORE_RESTRICT_PAT_MODS;
659 /* The NOT_REACHED; hides an assert() which has a rather complex
660 * definition in perl.h. */
661 NOT_REACHED; /* NOTREACHED */
662 return "?"; /* Unknown */
667 Return false if any get magic is on the SV other than taint magic.
671 PERL_STATIC_INLINE bool
672 S_sv_only_taint_gmagic(SV *sv) {
673 MAGIC *mg = SvMAGIC(sv);
675 PERL_ARGS_ASSERT_SV_ONLY_TAINT_GMAGIC;
678 if (mg->mg_type != PERL_MAGIC_taint
679 && !(mg->mg_flags & MGf_GSKIP)
680 && mg->mg_virtual->svt_get) {
683 mg = mg->mg_moremagic;
689 /* ------------------ cop.h ------------------------------------------- */
692 /* Enter a block. Push a new base context and return its address. */
694 PERL_STATIC_INLINE PERL_CONTEXT *
695 S_cx_pushblock(pTHX_ U8 type, U8 gimme, SV** sp, I32 saveix)
699 PERL_ARGS_ASSERT_CX_PUSHBLOCK;
704 cx->blk_gimme = gimme;
705 cx->blk_oldsaveix = saveix;
706 cx->blk_oldsp = (I32)(sp - PL_stack_base);
707 cx->blk_oldcop = PL_curcop;
708 cx->blk_oldmarksp = (I32)(PL_markstack_ptr - PL_markstack);
709 cx->blk_oldscopesp = PL_scopestack_ix;
710 cx->blk_oldpm = PL_curpm;
711 cx->blk_old_tmpsfloor = PL_tmps_floor;
713 PL_tmps_floor = PL_tmps_ix;
714 CX_DEBUG(cx, "PUSH");
719 /* Exit a block (RETURN and LAST). */
721 PERL_STATIC_INLINE void
722 S_cx_popblock(pTHX_ PERL_CONTEXT *cx)
724 PERL_ARGS_ASSERT_CX_POPBLOCK;
727 /* these 3 are common to cx_popblock and cx_topblock */
728 PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp;
729 PL_scopestack_ix = cx->blk_oldscopesp;
730 PL_curpm = cx->blk_oldpm;
732 /* LEAVE_SCOPE() should have made this true. /(?{})/ cheats
733 * and leaves a CX entry lying around for repeated use, so
734 * skip for multicall */ \
735 assert( (CxTYPE(cx) == CXt_SUB && CxMULTICALL(cx))
736 || PL_savestack_ix == cx->blk_oldsaveix);
737 PL_curcop = cx->blk_oldcop;
738 PL_tmps_floor = cx->blk_old_tmpsfloor;
741 /* Continue a block elsewhere (e.g. NEXT, REDO, GOTO).
742 * Whereas cx_popblock() restores the state to the point just before
743 * cx_pushblock() was called, cx_topblock() restores it to the point just
744 * *after* cx_pushblock() was called. */
746 PERL_STATIC_INLINE void
747 S_cx_topblock(pTHX_ PERL_CONTEXT *cx)
749 PERL_ARGS_ASSERT_CX_TOPBLOCK;
752 /* these 3 are common to cx_popblock and cx_topblock */
753 PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp;
754 PL_scopestack_ix = cx->blk_oldscopesp;
755 PL_curpm = cx->blk_oldpm;
757 PL_stack_sp = PL_stack_base + cx->blk_oldsp;
761 PERL_STATIC_INLINE void
762 S_cx_pushsub(pTHX_ PERL_CONTEXT *cx, CV *cv, OP *retop, bool hasargs)
764 U8 phlags = CX_PUSHSUB_GET_LVALUE_MASK(Perl_was_lvalue_sub);
766 PERL_ARGS_ASSERT_CX_PUSHSUB;
768 PERL_DTRACE_PROBE_ENTRY(cv);
770 cx->blk_sub.olddepth = CvDEPTH(cv);
771 cx->blk_sub.prevcomppad = PL_comppad;
772 cx->cx_type |= (hasargs) ? CXp_HASARGS : 0;
773 cx->blk_sub.retop = retop;
774 SvREFCNT_inc_simple_void_NN(cv);
775 cx->blk_u16 = PL_op->op_private & (phlags|OPpDEREF);
779 /* subsets of cx_popsub() */
781 PERL_STATIC_INLINE void
782 S_cx_popsub_common(pTHX_ PERL_CONTEXT *cx)
786 PERL_ARGS_ASSERT_CX_POPSUB_COMMON;
787 assert(CxTYPE(cx) == CXt_SUB);
789 PL_comppad = cx->blk_sub.prevcomppad;
790 PL_curpad = LIKELY(PL_comppad) ? AvARRAY(PL_comppad) : NULL;
792 CvDEPTH(cv) = cx->blk_sub.olddepth;
793 cx->blk_sub.cv = NULL;
798 /* handle the @_ part of leaving a sub */
800 PERL_STATIC_INLINE void
801 S_cx_popsub_args(pTHX_ PERL_CONTEXT *cx)
805 PERL_ARGS_ASSERT_CX_POPSUB_ARGS;
806 assert(CxTYPE(cx) == CXt_SUB);
807 assert(AvARRAY(MUTABLE_AV(
808 PadlistARRAY(CvPADLIST(cx->blk_sub.cv))[
809 CvDEPTH(cx->blk_sub.cv)])) == PL_curpad);
811 CX_POP_SAVEARRAY(cx);
812 av = MUTABLE_AV(PAD_SVl(0));
813 if (UNLIKELY(AvREAL(av)))
814 /* abandon @_ if it got reified */
815 clear_defarray(av, 0);
822 PERL_STATIC_INLINE void
823 S_cx_popsub(pTHX_ PERL_CONTEXT *cx)
825 PERL_ARGS_ASSERT_CX_POPSUB;
826 assert(CxTYPE(cx) == CXt_SUB);
828 PERL_DTRACE_PROBE_RETURN(cx->blk_sub.cv);
832 cx_popsub_common(cx);
836 PERL_STATIC_INLINE void
837 S_cx_pushformat(pTHX_ PERL_CONTEXT *cx, CV *cv, OP *retop, GV *gv)
839 PERL_ARGS_ASSERT_CX_PUSHFORMAT;
841 cx->blk_format.cv = cv;
842 cx->blk_format.retop = retop;
843 cx->blk_format.gv = gv;
844 cx->blk_format.dfoutgv = PL_defoutgv;
845 cx->blk_format.prevcomppad = PL_comppad;
848 SvREFCNT_inc_simple_void_NN(cv);
850 SvREFCNT_inc_void(cx->blk_format.dfoutgv);
854 PERL_STATIC_INLINE void
855 S_cx_popformat(pTHX_ PERL_CONTEXT *cx)
860 PERL_ARGS_ASSERT_CX_POPFORMAT;
861 assert(CxTYPE(cx) == CXt_FORMAT);
863 dfout = cx->blk_format.dfoutgv;
865 cx->blk_format.dfoutgv = NULL;
866 SvREFCNT_dec_NN(dfout);
868 PL_comppad = cx->blk_format.prevcomppad;
869 PL_curpad = LIKELY(PL_comppad) ? AvARRAY(PL_comppad) : NULL;
870 cv = cx->blk_format.cv;
871 cx->blk_format.cv = NULL;
877 PERL_STATIC_INLINE void
878 S_cx_pusheval(pTHX_ PERL_CONTEXT *cx, OP *retop, SV *namesv)
880 PERL_ARGS_ASSERT_CX_PUSHEVAL;
882 cx->blk_eval.retop = retop;
883 cx->blk_eval.old_namesv = namesv;
884 cx->blk_eval.old_eval_root = PL_eval_root;
885 cx->blk_eval.cur_text = PL_parser ? PL_parser->linestr : NULL;
886 cx->blk_eval.cv = NULL; /* later set by doeval_compile() */
887 cx->blk_eval.cur_top_env = PL_top_env;
889 assert(!(PL_in_eval & ~ 0x7F));
890 assert(!(PL_op->op_type & ~0x1FF));
891 cx->blk_u16 = (PL_in_eval & 0x7F) | ((U16)PL_op->op_type << 7);
895 PERL_STATIC_INLINE void
896 S_cx_popeval(pTHX_ PERL_CONTEXT *cx)
900 PERL_ARGS_ASSERT_CX_POPEVAL;
901 assert(CxTYPE(cx) == CXt_EVAL);
903 PL_in_eval = CxOLD_IN_EVAL(cx);
904 PL_eval_root = cx->blk_eval.old_eval_root;
905 sv = cx->blk_eval.cur_text;
906 if (sv && SvSCREAM(sv)) {
907 cx->blk_eval.cur_text = NULL;
911 sv = cx->blk_eval.old_namesv;
913 cx->blk_eval.old_namesv = NULL;
919 /* push a plain loop, i.e.
921 * while (cond) { block }
922 * for (init;cond;continue) { block }
923 * This loop can be last/redo'ed etc.
926 PERL_STATIC_INLINE void
927 S_cx_pushloop_plain(pTHX_ PERL_CONTEXT *cx)
929 PERL_ARGS_ASSERT_CX_PUSHLOOP_PLAIN;
930 cx->blk_loop.my_op = cLOOP;
934 /* push a true for loop, i.e.
935 * for var (list) { block }
938 PERL_STATIC_INLINE void
939 S_cx_pushloop_for(pTHX_ PERL_CONTEXT *cx, void *itervarp, SV* itersave)
941 PERL_ARGS_ASSERT_CX_PUSHLOOP_FOR;
943 /* this one line is common with cx_pushloop_plain */
944 cx->blk_loop.my_op = cLOOP;
946 cx->blk_loop.itervar_u.svp = (SV**)itervarp;
947 cx->blk_loop.itersave = itersave;
949 cx->blk_loop.oldcomppad = PL_comppad;
954 /* pop all loop types, including plain */
956 PERL_STATIC_INLINE void
957 S_cx_poploop(pTHX_ PERL_CONTEXT *cx)
959 PERL_ARGS_ASSERT_CX_POPLOOP;
961 assert(CxTYPE_is_LOOP(cx));
962 if ( CxTYPE(cx) == CXt_LOOP_ARY
963 || CxTYPE(cx) == CXt_LOOP_LAZYSV)
965 /* Free ary or cur. This assumes that state_u.ary.ary
966 * aligns with state_u.lazysv.cur. See cx_dup() */
967 SV *sv = cx->blk_loop.state_u.lazysv.cur;
968 cx->blk_loop.state_u.lazysv.cur = NULL;
970 if (CxTYPE(cx) == CXt_LOOP_LAZYSV) {
971 sv = cx->blk_loop.state_u.lazysv.end;
972 cx->blk_loop.state_u.lazysv.end = NULL;
976 if (cx->cx_type & (CXp_FOR_PAD|CXp_FOR_GV)) {
978 SV **svp = (cx)->blk_loop.itervar_u.svp;
979 if ((cx->cx_type & CXp_FOR_GV))
980 svp = &GvSV((GV*)svp);
982 *svp = cx->blk_loop.itersave;
983 cx->blk_loop.itersave = NULL;
989 PERL_STATIC_INLINE void
990 S_cx_pushwhen(pTHX_ PERL_CONTEXT *cx)
992 PERL_ARGS_ASSERT_CX_PUSHWHEN;
994 cx->blk_givwhen.leave_op = cLOGOP->op_other;
998 PERL_STATIC_INLINE void
999 S_cx_popwhen(pTHX_ PERL_CONTEXT *cx)
1001 PERL_ARGS_ASSERT_CX_POPWHEN;
1002 assert(CxTYPE(cx) == CXt_WHEN);
1004 PERL_UNUSED_ARG(cx);
1005 PERL_UNUSED_CONTEXT;
1006 /* currently NOOP */
1010 PERL_STATIC_INLINE void
1011 S_cx_pushgiven(pTHX_ PERL_CONTEXT *cx, SV *orig_defsv)
1013 PERL_ARGS_ASSERT_CX_PUSHGIVEN;
1015 cx->blk_givwhen.leave_op = cLOGOP->op_other;
1016 cx->blk_givwhen.defsv_save = orig_defsv;
1020 PERL_STATIC_INLINE void
1021 S_cx_popgiven(pTHX_ PERL_CONTEXT *cx)
1025 PERL_ARGS_ASSERT_CX_POPGIVEN;
1026 assert(CxTYPE(cx) == CXt_GIVEN);
1028 sv = GvSV(PL_defgv);
1029 GvSV(PL_defgv) = cx->blk_givwhen.defsv_save;
1030 cx->blk_givwhen.defsv_save = NULL;
1035 * ex: set ts=8 sts=4 sw=4 et: