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 1 if there exists some sequence of bytes, call it C<s'>, that when
509 appended to the sequence from C<s> through S<C<e - 1>> causes the entire
510 sequence starting at C<s> (including C<s'>) to be the well-formed UTF-8 of
511 some code point; otherwise returns 0.
513 In other words this returns TRUE if C<s> points to the beginning, but partial,
514 sequence of the UTF-8 for some code point.
516 This is useful when some fixed-length buffer is being tested for being
517 well-formed UTF-8, but the final few bytes in it don't comprise a full
518 character: it is split somewhere in the middle of its UTF-8 representation.
519 (Presumably when the buffer is refreshed with the next chunk of data, the new
520 first bytes will complete the partial code point.) This function is used to
521 verify that the final bytes in the current buffer are in fact the legal
522 beginning of some code point, so that if they aren't, the failure can be
523 signalled without having to wait for the next read.
525 If the bytes terminated at S<C<e - 1>> are a full character (or more), 0 is
530 PERL_STATIC_INLINE bool
531 S_is_utf8_valid_partial_char(const U8 * const s, const U8 * const e)
534 PERL_ARGS_ASSERT_IS_UTF8_VALID_PARTIAL_CHAR;
536 if (s >= e || s + UTF8SKIP(s) < e) {
540 return cBOOL(_is_utf8_char_slow(s, e - s));
543 /* ------------------------------- perl.h ----------------------------- */
546 =head1 Miscellaneous Functions
548 =for apidoc AiR|bool|is_safe_syscall|const char *pv|STRLEN len|const char *what|const char *op_name
550 Test that the given C<pv> doesn't contain any internal C<NUL> characters.
551 If it does, set C<errno> to C<ENOENT>, optionally warn, and return FALSE.
553 Return TRUE if the name is safe.
555 Used by the C<IS_SAFE_SYSCALL()> macro.
560 PERL_STATIC_INLINE bool
561 S_is_safe_syscall(pTHX_ const char *pv, STRLEN len, const char *what, const char *op_name) {
562 /* While the Windows CE API provides only UCS-16 (or UTF-16) APIs
563 * perl itself uses xce*() functions which accept 8-bit strings.
566 PERL_ARGS_ASSERT_IS_SAFE_SYSCALL;
570 if (UNLIKELY((null_at = (char *)memchr(pv, 0, len-1)) != NULL)) {
571 SETERRNO(ENOENT, LIB_INVARG);
572 Perl_ck_warner(aTHX_ packWARN(WARN_SYSCALLS),
573 "Invalid \\0 character in %s for %s: %s\\0%s",
574 what, op_name, pv, null_at+1);
584 Return true if the supplied filename has a newline character
585 immediately before the first (hopefully only) NUL.
587 My original look at this incorrectly used the len from SvPV(), but
588 that's incorrect, since we allow for a NUL in pv[len-1].
590 So instead, strlen() and work from there.
592 This allow for the user reading a filename, forgetting to chomp it,
595 open my $foo, "$file\0";
601 PERL_STATIC_INLINE bool
602 S_should_warn_nl(const char *pv) {
605 PERL_ARGS_ASSERT_SHOULD_WARN_NL;
609 return len > 0 && pv[len-1] == '\n';
614 /* ------------------ pp.c, regcomp.c, toke.c, universal.c ------------ */
616 #define MAX_CHARSET_NAME_LENGTH 2
618 PERL_STATIC_INLINE const char *
619 get_regex_charset_name(const U32 flags, STRLEN* const lenp)
621 /* Returns a string that corresponds to the name of the regex character set
622 * given by 'flags', and *lenp is set the length of that string, which
623 * cannot exceed MAX_CHARSET_NAME_LENGTH characters */
626 switch (get_regex_charset(flags)) {
627 case REGEX_DEPENDS_CHARSET: return DEPENDS_PAT_MODS;
628 case REGEX_LOCALE_CHARSET: return LOCALE_PAT_MODS;
629 case REGEX_UNICODE_CHARSET: return UNICODE_PAT_MODS;
630 case REGEX_ASCII_RESTRICTED_CHARSET: return ASCII_RESTRICT_PAT_MODS;
631 case REGEX_ASCII_MORE_RESTRICTED_CHARSET:
633 return ASCII_MORE_RESTRICT_PAT_MODS;
635 /* The NOT_REACHED; hides an assert() which has a rather complex
636 * definition in perl.h. */
637 NOT_REACHED; /* NOTREACHED */
638 return "?"; /* Unknown */
643 Return false if any get magic is on the SV other than taint magic.
647 PERL_STATIC_INLINE bool
648 S_sv_only_taint_gmagic(SV *sv) {
649 MAGIC *mg = SvMAGIC(sv);
651 PERL_ARGS_ASSERT_SV_ONLY_TAINT_GMAGIC;
654 if (mg->mg_type != PERL_MAGIC_taint
655 && !(mg->mg_flags & MGf_GSKIP)
656 && mg->mg_virtual->svt_get) {
659 mg = mg->mg_moremagic;
665 /* ------------------ cop.h ------------------------------------------- */
668 /* Enter a block. Push a new base context and return its address. */
670 PERL_STATIC_INLINE PERL_CONTEXT *
671 S_cx_pushblock(pTHX_ U8 type, U8 gimme, SV** sp, I32 saveix)
675 PERL_ARGS_ASSERT_CX_PUSHBLOCK;
680 cx->blk_gimme = gimme;
681 cx->blk_oldsaveix = saveix;
682 cx->blk_oldsp = (I32)(sp - PL_stack_base);
683 cx->blk_oldcop = PL_curcop;
684 cx->blk_oldmarksp = (I32)(PL_markstack_ptr - PL_markstack);
685 cx->blk_oldscopesp = PL_scopestack_ix;
686 cx->blk_oldpm = PL_curpm;
687 cx->blk_old_tmpsfloor = PL_tmps_floor;
689 PL_tmps_floor = PL_tmps_ix;
690 CX_DEBUG(cx, "PUSH");
695 /* Exit a block (RETURN and LAST). */
697 PERL_STATIC_INLINE void
698 S_cx_popblock(pTHX_ PERL_CONTEXT *cx)
700 PERL_ARGS_ASSERT_CX_POPBLOCK;
703 /* these 3 are common to cx_popblock and cx_topblock */
704 PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp;
705 PL_scopestack_ix = cx->blk_oldscopesp;
706 PL_curpm = cx->blk_oldpm;
708 /* LEAVE_SCOPE() should have made this true. /(?{})/ cheats
709 * and leaves a CX entry lying around for repeated use, so
710 * skip for multicall */ \
711 assert( (CxTYPE(cx) == CXt_SUB && CxMULTICALL(cx))
712 || PL_savestack_ix == cx->blk_oldsaveix);
713 PL_curcop = cx->blk_oldcop;
714 PL_tmps_floor = cx->blk_old_tmpsfloor;
717 /* Continue a block elsewhere (e.g. NEXT, REDO, GOTO).
718 * Whereas cx_popblock() restores the state to the point just before
719 * cx_pushblock() was called, cx_topblock() restores it to the point just
720 * *after* cx_pushblock() was called. */
722 PERL_STATIC_INLINE void
723 S_cx_topblock(pTHX_ PERL_CONTEXT *cx)
725 PERL_ARGS_ASSERT_CX_TOPBLOCK;
728 /* these 3 are common to cx_popblock and cx_topblock */
729 PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp;
730 PL_scopestack_ix = cx->blk_oldscopesp;
731 PL_curpm = cx->blk_oldpm;
733 PL_stack_sp = PL_stack_base + cx->blk_oldsp;
737 PERL_STATIC_INLINE void
738 S_cx_pushsub(pTHX_ PERL_CONTEXT *cx, CV *cv, OP *retop, bool hasargs)
740 U8 phlags = CX_PUSHSUB_GET_LVALUE_MASK(Perl_was_lvalue_sub);
742 PERL_ARGS_ASSERT_CX_PUSHSUB;
744 PERL_DTRACE_PROBE_ENTRY(cv);
746 cx->blk_sub.olddepth = CvDEPTH(cv);
747 cx->blk_sub.prevcomppad = PL_comppad;
748 cx->cx_type |= (hasargs) ? CXp_HASARGS : 0;
749 cx->blk_sub.retop = retop;
750 SvREFCNT_inc_simple_void_NN(cv);
751 cx->blk_u16 = PL_op->op_private & (phlags|OPpDEREF);
755 /* subsets of cx_popsub() */
757 PERL_STATIC_INLINE void
758 S_cx_popsub_common(pTHX_ PERL_CONTEXT *cx)
762 PERL_ARGS_ASSERT_CX_POPSUB_COMMON;
763 assert(CxTYPE(cx) == CXt_SUB);
765 PL_comppad = cx->blk_sub.prevcomppad;
766 PL_curpad = LIKELY(PL_comppad) ? AvARRAY(PL_comppad) : NULL;
768 CvDEPTH(cv) = cx->blk_sub.olddepth;
769 cx->blk_sub.cv = NULL;
774 /* handle the @_ part of leaving a sub */
776 PERL_STATIC_INLINE void
777 S_cx_popsub_args(pTHX_ PERL_CONTEXT *cx)
781 PERL_ARGS_ASSERT_CX_POPSUB_ARGS;
782 assert(CxTYPE(cx) == CXt_SUB);
783 assert(AvARRAY(MUTABLE_AV(
784 PadlistARRAY(CvPADLIST(cx->blk_sub.cv))[
785 CvDEPTH(cx->blk_sub.cv)])) == PL_curpad);
787 CX_POP_SAVEARRAY(cx);
788 av = MUTABLE_AV(PAD_SVl(0));
789 if (UNLIKELY(AvREAL(av)))
790 /* abandon @_ if it got reified */
791 clear_defarray(av, 0);
798 PERL_STATIC_INLINE void
799 S_cx_popsub(pTHX_ PERL_CONTEXT *cx)
801 PERL_ARGS_ASSERT_CX_POPSUB;
802 assert(CxTYPE(cx) == CXt_SUB);
804 PERL_DTRACE_PROBE_RETURN(cx->blk_sub.cv);
808 cx_popsub_common(cx);
812 PERL_STATIC_INLINE void
813 S_cx_pushformat(pTHX_ PERL_CONTEXT *cx, CV *cv, OP *retop, GV *gv)
815 PERL_ARGS_ASSERT_CX_PUSHFORMAT;
817 cx->blk_format.cv = cv;
818 cx->blk_format.retop = retop;
819 cx->blk_format.gv = gv;
820 cx->blk_format.dfoutgv = PL_defoutgv;
821 cx->blk_format.prevcomppad = PL_comppad;
824 SvREFCNT_inc_simple_void_NN(cv);
826 SvREFCNT_inc_void(cx->blk_format.dfoutgv);
830 PERL_STATIC_INLINE void
831 S_cx_popformat(pTHX_ PERL_CONTEXT *cx)
836 PERL_ARGS_ASSERT_CX_POPFORMAT;
837 assert(CxTYPE(cx) == CXt_FORMAT);
839 dfout = cx->blk_format.dfoutgv;
841 cx->blk_format.dfoutgv = NULL;
842 SvREFCNT_dec_NN(dfout);
844 PL_comppad = cx->blk_format.prevcomppad;
845 PL_curpad = LIKELY(PL_comppad) ? AvARRAY(PL_comppad) : NULL;
846 cv = cx->blk_format.cv;
847 cx->blk_format.cv = NULL;
853 PERL_STATIC_INLINE void
854 S_cx_pusheval(pTHX_ PERL_CONTEXT *cx, OP *retop, SV *namesv)
856 PERL_ARGS_ASSERT_CX_PUSHEVAL;
858 cx->blk_eval.retop = retop;
859 cx->blk_eval.old_namesv = namesv;
860 cx->blk_eval.old_eval_root = PL_eval_root;
861 cx->blk_eval.cur_text = PL_parser ? PL_parser->linestr : NULL;
862 cx->blk_eval.cv = NULL; /* later set by doeval_compile() */
863 cx->blk_eval.cur_top_env = PL_top_env;
865 assert(!(PL_in_eval & ~ 0x7F));
866 assert(!(PL_op->op_type & ~0x1FF));
867 cx->blk_u16 = (PL_in_eval & 0x7F) | ((U16)PL_op->op_type << 7);
871 PERL_STATIC_INLINE void
872 S_cx_popeval(pTHX_ PERL_CONTEXT *cx)
876 PERL_ARGS_ASSERT_CX_POPEVAL;
877 assert(CxTYPE(cx) == CXt_EVAL);
879 PL_in_eval = CxOLD_IN_EVAL(cx);
880 PL_eval_root = cx->blk_eval.old_eval_root;
881 sv = cx->blk_eval.cur_text;
882 if (sv && SvSCREAM(sv)) {
883 cx->blk_eval.cur_text = NULL;
887 sv = cx->blk_eval.old_namesv;
889 cx->blk_eval.old_namesv = NULL;
895 /* push a plain loop, i.e.
897 * while (cond) { block }
898 * for (init;cond;continue) { block }
899 * This loop can be last/redo'ed etc.
902 PERL_STATIC_INLINE void
903 S_cx_pushloop_plain(pTHX_ PERL_CONTEXT *cx)
905 PERL_ARGS_ASSERT_CX_PUSHLOOP_PLAIN;
906 cx->blk_loop.my_op = cLOOP;
910 /* push a true for loop, i.e.
911 * for var (list) { block }
914 PERL_STATIC_INLINE void
915 S_cx_pushloop_for(pTHX_ PERL_CONTEXT *cx, void *itervarp, SV* itersave)
917 PERL_ARGS_ASSERT_CX_PUSHLOOP_FOR;
919 /* this one line is common with cx_pushloop_plain */
920 cx->blk_loop.my_op = cLOOP;
922 cx->blk_loop.itervar_u.svp = (SV**)itervarp;
923 cx->blk_loop.itersave = itersave;
925 cx->blk_loop.oldcomppad = PL_comppad;
930 /* pop all loop types, including plain */
932 PERL_STATIC_INLINE void
933 S_cx_poploop(pTHX_ PERL_CONTEXT *cx)
935 PERL_ARGS_ASSERT_CX_POPLOOP;
937 assert(CxTYPE_is_LOOP(cx));
938 if ( CxTYPE(cx) == CXt_LOOP_ARY
939 || CxTYPE(cx) == CXt_LOOP_LAZYSV)
941 /* Free ary or cur. This assumes that state_u.ary.ary
942 * aligns with state_u.lazysv.cur. See cx_dup() */
943 SV *sv = cx->blk_loop.state_u.lazysv.cur;
944 cx->blk_loop.state_u.lazysv.cur = NULL;
946 if (CxTYPE(cx) == CXt_LOOP_LAZYSV) {
947 sv = cx->blk_loop.state_u.lazysv.end;
948 cx->blk_loop.state_u.lazysv.end = NULL;
952 if (cx->cx_type & (CXp_FOR_PAD|CXp_FOR_GV)) {
954 SV **svp = (cx)->blk_loop.itervar_u.svp;
955 if ((cx->cx_type & CXp_FOR_GV))
956 svp = &GvSV((GV*)svp);
958 *svp = cx->blk_loop.itersave;
959 cx->blk_loop.itersave = NULL;
965 PERL_STATIC_INLINE void
966 S_cx_pushwhen(pTHX_ PERL_CONTEXT *cx)
968 PERL_ARGS_ASSERT_CX_PUSHWHEN;
970 cx->blk_givwhen.leave_op = cLOGOP->op_other;
974 PERL_STATIC_INLINE void
975 S_cx_popwhen(pTHX_ PERL_CONTEXT *cx)
977 PERL_ARGS_ASSERT_CX_POPWHEN;
978 assert(CxTYPE(cx) == CXt_WHEN);
986 PERL_STATIC_INLINE void
987 S_cx_pushgiven(pTHX_ PERL_CONTEXT *cx, SV *orig_defsv)
989 PERL_ARGS_ASSERT_CX_PUSHGIVEN;
991 cx->blk_givwhen.leave_op = cLOGOP->op_other;
992 cx->blk_givwhen.defsv_save = orig_defsv;
996 PERL_STATIC_INLINE void
997 S_cx_popgiven(pTHX_ PERL_CONTEXT *cx)
1001 PERL_ARGS_ASSERT_CX_POPGIVEN;
1002 assert(CxTYPE(cx) == CXt_GIVEN);
1004 sv = GvSV(PL_defgv);
1005 GvSV(PL_defgv) = cx->blk_givwhen.defsv_save;
1006 cx->blk_givwhen.defsv_save = NULL;
1011 * ex: set ts=8 sts=4 sw=4 et: