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>().
376 Perl_is_utf8_string(const U8 *s, STRLEN len)
378 const U8* const send = s + (len ? len : strlen((const char *)s));
381 PERL_ARGS_ASSERT_IS_UTF8_STRING;
384 STRLEN len = isUTF8_CHAR(x, send);
385 if (UNLIKELY(! len)) {
395 Implemented as a macro in utf8.h
397 =for apidoc is_utf8_string_loc
399 Like L</is_utf8_string> but stores the location of the failure (in the
400 case of "utf8ness failure") or the location C<s>+C<len> (in the case of
401 "utf8ness success") in the C<ep>.
403 See also L</is_utf8_string_loclen>() and L</is_utf8_string>().
405 =for apidoc is_utf8_string_loclen
407 Like L</is_utf8_string>() but stores the location of the failure (in the
408 case of "utf8ness failure") or the location C<s>+C<len> (in the case of
409 "utf8ness success") in the C<ep>, and the number of UTF-8
410 encoded characters in the C<el>.
412 See also L</is_utf8_string_loc>() and L</is_utf8_string>().
418 Perl_is_utf8_string_loclen(const U8 *s, STRLEN len, const U8 **ep, STRLEN *el)
420 const U8* const send = s + (len ? len : strlen((const char *)s));
424 PERL_ARGS_ASSERT_IS_UTF8_STRING_LOCLEN;
427 STRLEN len = isUTF8_CHAR(x, send);
428 if (UNLIKELY(! len)) {
446 =for apidoc utf8_distance
448 Returns the number of UTF-8 characters between the UTF-8 pointers C<a>
451 WARNING: use only if you *know* that the pointers point inside the
457 PERL_STATIC_INLINE IV
458 Perl_utf8_distance(pTHX_ const U8 *a, const U8 *b)
460 PERL_ARGS_ASSERT_UTF8_DISTANCE;
462 return (a < b) ? -1 * (IV) utf8_length(a, b) : (IV) utf8_length(b, a);
468 Return the UTF-8 pointer C<s> displaced by C<off> characters, either
471 WARNING: do not use the following unless you *know* C<off> is within
472 the UTF-8 data pointed to by C<s> *and* that on entry C<s> is aligned
473 on the first byte of character or just after the last byte of a character.
478 PERL_STATIC_INLINE U8 *
479 Perl_utf8_hop(const U8 *s, SSize_t off)
481 PERL_ARGS_ASSERT_UTF8_HOP;
483 /* Note: cannot use UTF8_IS_...() too eagerly here since e.g
484 * the bitops (especially ~) can create illegal UTF-8.
485 * In other words: in Perl UTF-8 is not just for Unicode. */
494 while (UTF8_IS_CONTINUATION(*s))
501 /* ------------------------------- perl.h ----------------------------- */
504 =head1 Miscellaneous Functions
506 =for apidoc AiR|bool|is_safe_syscall|const char *pv|STRLEN len|const char *what|const char *op_name
508 Test that the given C<pv> doesn't contain any internal C<NUL> characters.
509 If it does, set C<errno> to C<ENOENT>, optionally warn, and return FALSE.
511 Return TRUE if the name is safe.
513 Used by the C<IS_SAFE_SYSCALL()> macro.
518 PERL_STATIC_INLINE bool
519 S_is_safe_syscall(pTHX_ const char *pv, STRLEN len, const char *what, const char *op_name) {
520 /* While the Windows CE API provides only UCS-16 (or UTF-16) APIs
521 * perl itself uses xce*() functions which accept 8-bit strings.
524 PERL_ARGS_ASSERT_IS_SAFE_SYSCALL;
528 if (UNLIKELY((null_at = (char *)memchr(pv, 0, len-1)) != NULL)) {
529 SETERRNO(ENOENT, LIB_INVARG);
530 Perl_ck_warner(aTHX_ packWARN(WARN_SYSCALLS),
531 "Invalid \\0 character in %s for %s: %s\\0%s",
532 what, op_name, pv, null_at+1);
542 Return true if the supplied filename has a newline character
543 immediately before the first (hopefully only) NUL.
545 My original look at this incorrectly used the len from SvPV(), but
546 that's incorrect, since we allow for a NUL in pv[len-1].
548 So instead, strlen() and work from there.
550 This allow for the user reading a filename, forgetting to chomp it,
553 open my $foo, "$file\0";
559 PERL_STATIC_INLINE bool
560 S_should_warn_nl(const char *pv) {
563 PERL_ARGS_ASSERT_SHOULD_WARN_NL;
567 return len > 0 && pv[len-1] == '\n';
572 /* ------------------ pp.c, regcomp.c, toke.c, universal.c ------------ */
574 #define MAX_CHARSET_NAME_LENGTH 2
576 PERL_STATIC_INLINE const char *
577 get_regex_charset_name(const U32 flags, STRLEN* const lenp)
579 /* Returns a string that corresponds to the name of the regex character set
580 * given by 'flags', and *lenp is set the length of that string, which
581 * cannot exceed MAX_CHARSET_NAME_LENGTH characters */
584 switch (get_regex_charset(flags)) {
585 case REGEX_DEPENDS_CHARSET: return DEPENDS_PAT_MODS;
586 case REGEX_LOCALE_CHARSET: return LOCALE_PAT_MODS;
587 case REGEX_UNICODE_CHARSET: return UNICODE_PAT_MODS;
588 case REGEX_ASCII_RESTRICTED_CHARSET: return ASCII_RESTRICT_PAT_MODS;
589 case REGEX_ASCII_MORE_RESTRICTED_CHARSET:
591 return ASCII_MORE_RESTRICT_PAT_MODS;
593 /* The NOT_REACHED; hides an assert() which has a rather complex
594 * definition in perl.h. */
595 NOT_REACHED; /* NOTREACHED */
596 return "?"; /* Unknown */
601 Return false if any get magic is on the SV other than taint magic.
605 PERL_STATIC_INLINE bool
606 S_sv_only_taint_gmagic(SV *sv) {
607 MAGIC *mg = SvMAGIC(sv);
609 PERL_ARGS_ASSERT_SV_ONLY_TAINT_GMAGIC;
612 if (mg->mg_type != PERL_MAGIC_taint
613 && !(mg->mg_flags & MGf_GSKIP)
614 && mg->mg_virtual->svt_get) {
617 mg = mg->mg_moremagic;
623 /* ------------------ cop.h ------------------------------------------- */
626 /* Enter a block. Push a new base context and return its address. */
628 PERL_STATIC_INLINE PERL_CONTEXT *
629 S_cx_pushblock(pTHX_ U8 type, U8 gimme, SV** sp, I32 saveix)
633 PERL_ARGS_ASSERT_CX_PUSHBLOCK;
638 cx->blk_gimme = gimme;
639 cx->blk_oldsaveix = saveix;
640 cx->blk_oldsp = (I32)(sp - PL_stack_base);
641 cx->blk_oldcop = PL_curcop;
642 cx->blk_oldmarksp = (I32)(PL_markstack_ptr - PL_markstack);
643 cx->blk_oldscopesp = PL_scopestack_ix;
644 cx->blk_oldpm = PL_curpm;
645 cx->blk_old_tmpsfloor = PL_tmps_floor;
647 PL_tmps_floor = PL_tmps_ix;
648 CX_DEBUG(cx, "PUSH");
653 /* Exit a block (RETURN and LAST). */
655 PERL_STATIC_INLINE void
656 S_cx_popblock(pTHX_ PERL_CONTEXT *cx)
658 PERL_ARGS_ASSERT_CX_POPBLOCK;
661 /* these 3 are common to cx_popblock and cx_topblock */
662 PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp;
663 PL_scopestack_ix = cx->blk_oldscopesp;
664 PL_curpm = cx->blk_oldpm;
666 /* LEAVE_SCOPE() should have made this true. /(?{})/ cheats
667 * and leaves a CX entry lying around for repeated use, so
668 * skip for multicall */ \
669 assert( (CxTYPE(cx) == CXt_SUB && CxMULTICALL(cx))
670 || PL_savestack_ix == cx->blk_oldsaveix);
671 PL_curcop = cx->blk_oldcop;
672 PL_tmps_floor = cx->blk_old_tmpsfloor;
675 /* Continue a block elsewhere (e.g. NEXT, REDO, GOTO).
676 * Whereas cx_popblock() restores the state to the point just before
677 * cx_pushblock() was called, cx_topblock() restores it to the point just
678 * *after* cx_pushblock() was called. */
680 PERL_STATIC_INLINE void
681 S_cx_topblock(pTHX_ PERL_CONTEXT *cx)
683 PERL_ARGS_ASSERT_CX_TOPBLOCK;
686 /* these 3 are common to cx_popblock and cx_topblock */
687 PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp;
688 PL_scopestack_ix = cx->blk_oldscopesp;
689 PL_curpm = cx->blk_oldpm;
691 PL_stack_sp = PL_stack_base + cx->blk_oldsp;
695 PERL_STATIC_INLINE void
696 S_cx_pushsub(pTHX_ PERL_CONTEXT *cx, CV *cv, OP *retop, bool hasargs)
698 U8 phlags = CX_PUSHSUB_GET_LVALUE_MASK(Perl_was_lvalue_sub);
700 PERL_ARGS_ASSERT_CX_PUSHSUB;
702 PERL_DTRACE_PROBE_ENTRY(cv);
704 cx->blk_sub.olddepth = CvDEPTH(cv);
705 cx->blk_sub.prevcomppad = PL_comppad;
706 cx->cx_type |= (hasargs) ? CXp_HASARGS : 0;
707 cx->blk_sub.retop = retop;
708 SvREFCNT_inc_simple_void_NN(cv);
709 cx->blk_u16 = PL_op->op_private & (phlags|OPpDEREF);
713 /* subsets of cx_popsub() */
715 PERL_STATIC_INLINE void
716 S_cx_popsub_common(pTHX_ PERL_CONTEXT *cx)
720 PERL_ARGS_ASSERT_CX_POPSUB_COMMON;
721 assert(CxTYPE(cx) == CXt_SUB);
723 PL_comppad = cx->blk_sub.prevcomppad;
724 PL_curpad = LIKELY(PL_comppad) ? AvARRAY(PL_comppad) : NULL;
726 CvDEPTH(cv) = cx->blk_sub.olddepth;
727 cx->blk_sub.cv = NULL;
732 /* handle the @_ part of leaving a sub */
734 PERL_STATIC_INLINE void
735 S_cx_popsub_args(pTHX_ PERL_CONTEXT *cx)
739 PERL_ARGS_ASSERT_CX_POPSUB_ARGS;
740 assert(CxTYPE(cx) == CXt_SUB);
741 assert(AvARRAY(MUTABLE_AV(
742 PadlistARRAY(CvPADLIST(cx->blk_sub.cv))[
743 CvDEPTH(cx->blk_sub.cv)])) == PL_curpad);
745 CX_POP_SAVEARRAY(cx);
746 av = MUTABLE_AV(PAD_SVl(0));
747 if (UNLIKELY(AvREAL(av)))
748 /* abandon @_ if it got reified */
749 clear_defarray(av, 0);
756 PERL_STATIC_INLINE void
757 S_cx_popsub(pTHX_ PERL_CONTEXT *cx)
759 PERL_ARGS_ASSERT_CX_POPSUB;
760 assert(CxTYPE(cx) == CXt_SUB);
762 PERL_DTRACE_PROBE_RETURN(cx->blk_sub.cv);
766 cx_popsub_common(cx);
770 PERL_STATIC_INLINE void
771 S_cx_pushformat(pTHX_ PERL_CONTEXT *cx, CV *cv, OP *retop, GV *gv)
773 PERL_ARGS_ASSERT_CX_PUSHFORMAT;
775 cx->blk_format.cv = cv;
776 cx->blk_format.retop = retop;
777 cx->blk_format.gv = gv;
778 cx->blk_format.dfoutgv = PL_defoutgv;
779 cx->blk_format.prevcomppad = PL_comppad;
782 SvREFCNT_inc_simple_void_NN(cv);
784 SvREFCNT_inc_void(cx->blk_format.dfoutgv);
788 PERL_STATIC_INLINE void
789 S_cx_popformat(pTHX_ PERL_CONTEXT *cx)
794 PERL_ARGS_ASSERT_CX_POPFORMAT;
795 assert(CxTYPE(cx) == CXt_FORMAT);
797 dfout = cx->blk_format.dfoutgv;
799 cx->blk_format.dfoutgv = NULL;
800 SvREFCNT_dec_NN(dfout);
802 PL_comppad = cx->blk_format.prevcomppad;
803 PL_curpad = LIKELY(PL_comppad) ? AvARRAY(PL_comppad) : NULL;
804 cv = cx->blk_format.cv;
805 cx->blk_format.cv = NULL;
811 PERL_STATIC_INLINE void
812 S_cx_pusheval(pTHX_ PERL_CONTEXT *cx, OP *retop, SV *namesv)
814 PERL_ARGS_ASSERT_CX_PUSHEVAL;
816 cx->blk_eval.retop = retop;
817 cx->blk_eval.old_namesv = namesv;
818 cx->blk_eval.old_eval_root = PL_eval_root;
819 cx->blk_eval.cur_text = PL_parser ? PL_parser->linestr : NULL;
820 cx->blk_eval.cv = NULL; /* later set by doeval_compile() */
821 cx->blk_eval.cur_top_env = PL_top_env;
823 assert(!(PL_in_eval & ~ 0x7F));
824 assert(!(PL_op->op_type & ~0x1FF));
825 cx->blk_u16 = (PL_in_eval & 0x7F) | ((U16)PL_op->op_type << 7);
829 PERL_STATIC_INLINE void
830 S_cx_popeval(pTHX_ PERL_CONTEXT *cx)
834 PERL_ARGS_ASSERT_CX_POPEVAL;
835 assert(CxTYPE(cx) == CXt_EVAL);
837 PL_in_eval = CxOLD_IN_EVAL(cx);
838 PL_eval_root = cx->blk_eval.old_eval_root;
839 sv = cx->blk_eval.cur_text;
840 if (sv && SvSCREAM(sv)) {
841 cx->blk_eval.cur_text = NULL;
845 sv = cx->blk_eval.old_namesv;
847 cx->blk_eval.old_namesv = NULL;
853 /* push a plain loop, i.e.
855 * while (cond) { block }
856 * for (init;cond;continue) { block }
857 * This loop can be last/redo'ed etc.
860 PERL_STATIC_INLINE void
861 S_cx_pushloop_plain(pTHX_ PERL_CONTEXT *cx)
863 PERL_ARGS_ASSERT_CX_PUSHLOOP_PLAIN;
864 cx->blk_loop.my_op = cLOOP;
868 /* push a true for loop, i.e.
869 * for var (list) { block }
872 PERL_STATIC_INLINE void
873 S_cx_pushloop_for(pTHX_ PERL_CONTEXT *cx, void *itervarp, SV* itersave)
875 PERL_ARGS_ASSERT_CX_PUSHLOOP_FOR;
877 /* this one line is common with cx_pushloop_plain */
878 cx->blk_loop.my_op = cLOOP;
880 cx->blk_loop.itervar_u.svp = (SV**)itervarp;
881 cx->blk_loop.itersave = itersave;
883 cx->blk_loop.oldcomppad = PL_comppad;
888 /* pop all loop types, including plain */
890 PERL_STATIC_INLINE void
891 S_cx_poploop(pTHX_ PERL_CONTEXT *cx)
893 PERL_ARGS_ASSERT_CX_POPLOOP;
895 assert(CxTYPE_is_LOOP(cx));
896 if ( CxTYPE(cx) == CXt_LOOP_ARY
897 || CxTYPE(cx) == CXt_LOOP_LAZYSV)
899 /* Free ary or cur. This assumes that state_u.ary.ary
900 * aligns with state_u.lazysv.cur. See cx_dup() */
901 SV *sv = cx->blk_loop.state_u.lazysv.cur;
902 cx->blk_loop.state_u.lazysv.cur = NULL;
904 if (CxTYPE(cx) == CXt_LOOP_LAZYSV) {
905 sv = cx->blk_loop.state_u.lazysv.end;
906 cx->blk_loop.state_u.lazysv.end = NULL;
910 if (cx->cx_type & (CXp_FOR_PAD|CXp_FOR_GV)) {
912 SV **svp = (cx)->blk_loop.itervar_u.svp;
913 if ((cx->cx_type & CXp_FOR_GV))
914 svp = &GvSV((GV*)svp);
916 *svp = cx->blk_loop.itersave;
917 cx->blk_loop.itersave = NULL;
923 PERL_STATIC_INLINE void
924 S_cx_pushwhen(pTHX_ PERL_CONTEXT *cx)
926 PERL_ARGS_ASSERT_CX_PUSHWHEN;
928 cx->blk_givwhen.leave_op = cLOGOP->op_other;
932 PERL_STATIC_INLINE void
933 S_cx_popwhen(pTHX_ PERL_CONTEXT *cx)
935 PERL_ARGS_ASSERT_CX_POPWHEN;
936 assert(CxTYPE(cx) == CXt_WHEN);
944 PERL_STATIC_INLINE void
945 S_cx_pushgiven(pTHX_ PERL_CONTEXT *cx, SV *orig_defsv)
947 PERL_ARGS_ASSERT_CX_PUSHGIVEN;
949 cx->blk_givwhen.leave_op = cLOGOP->op_other;
950 cx->blk_givwhen.defsv_save = orig_defsv;
954 PERL_STATIC_INLINE void
955 S_cx_popgiven(pTHX_ PERL_CONTEXT *cx)
959 PERL_ARGS_ASSERT_CX_POPGIVEN;
960 assert(CxTYPE(cx) == CXt_GIVEN);
963 GvSV(PL_defgv) = cx->blk_givwhen.defsv_save;
964 cx->blk_givwhen.defsv_save = NULL;
969 * ex: set ts=8 sts=4 sw=4 et: