3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, 2004, 2005, 2006, by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
12 #undef sv_flags /* Convex has this in <signal.h> for sigvec() */
18 =for apidoc AmU||svtype
19 An enum of flags for Perl types. These are found in the file B<sv.h>
20 in the C<svtype> enum. Test these flags with the C<SvTYPE> macro.
22 =for apidoc AmU||SVt_PV
23 Pointer type flag for scalars. See C<svtype>.
25 =for apidoc AmU||SVt_IV
26 Integer type flag for scalars. See C<svtype>.
28 =for apidoc AmU||SVt_NV
29 Double type flag for scalars. See C<svtype>.
31 =for apidoc AmU||SVt_PVMG
32 Type flag for blessed scalars. See C<svtype>.
34 =for apidoc AmU||SVt_PVAV
35 Type flag for arrays. See C<svtype>.
37 =for apidoc AmU||SVt_PVHV
38 Type flag for hashes. See C<svtype>.
40 =for apidoc AmU||SVt_PVCV
41 Type flag for code refs. See C<svtype>.
63 SVt_LAST /* keep last in enum. used to size arrays */
66 /* There is collusion here with sv_clear - sv_clear exits early for SVt_NULL
67 and SVt_IV, so never reaches the clause at the end that uses
68 sv_type_details->body_size to determine whether to call safefree(). Hence
69 body_size can be set no-zero to record the size of PTEs and HEs, without
70 fear of bogus frees. */
72 #define PTE_SVSLOT SVt_IV
74 #if defined(PERL_IN_HV_C) || defined(PERL_IN_XS_APITEST)
75 #define HE_SVSLOT SVt_NULL
78 /* typedefs to eliminate some typing */
80 typedef struct hek HEK;
82 /* Using C's structural equivalence to help emulate C++ inheritance here... */
84 /* start with 2 sv-head building blocks */
85 #define _SV_HEAD(ptrtype) \
86 ptrtype sv_any; /* pointer to body */ \
87 U32 sv_refcnt; /* how many references to us */ \
88 U32 sv_flags /* what we are */
90 #define _SV_HEAD_UNION \
94 SV* svu_rv; /* pointer to another SV */ \
95 char* svu_pv; /* pointer to malloced string */ \
101 struct STRUCT_SV { /* struct sv { */
104 #ifdef DEBUG_LEAKING_SCALARS
105 unsigned sv_debug_optype:9; /* the type of OP that allocated us */
106 unsigned sv_debug_inpad:1; /* was allocated in a pad for an OP */
107 unsigned sv_debug_cloned:1; /* was cloned for an ithread */
108 unsigned sv_debug_line:16; /* the line where we were allocated */
109 char * sv_debug_file; /* the file where we were allocated */
114 _SV_HEAD(XPVGV*); /* pointer to xpvgv body */
119 _SV_HEAD(XPVCV*); /* pointer to xpvcv body */
124 _SV_HEAD(XPVAV*); /* pointer to xpvav body */
129 _SV_HEAD(XPVHV*); /* pointer to xpvhv body */
134 _SV_HEAD(XPVIO*); /* pointer to xpvio body */
139 #undef _SV_HEAD_UNION /* ensure no pollution */
142 =head1 SV Manipulation Functions
144 =for apidoc Am|U32|SvREFCNT|SV* sv
145 Returns the value of the object's reference count.
147 =for apidoc Am|SV*|SvREFCNT_inc|SV* sv
148 Increments the reference count of the given SV.
150 =for apidoc Am|void|SvREFCNT_dec|SV* sv
151 Decrements the reference count of the given SV.
153 =for apidoc Am|svtype|SvTYPE|SV* sv
154 Returns the type of the SV. See C<svtype>.
156 =for apidoc Am|void|SvUPGRADE|SV* sv|svtype type
157 Used to upgrade an SV to a more complex form. Uses C<sv_upgrade> to
158 perform the upgrade if necessary. See C<svtype>.
163 #define SvANY(sv) (sv)->sv_any
164 #define SvFLAGS(sv) (sv)->sv_flags
165 #define SvREFCNT(sv) (sv)->sv_refcnt
167 #if defined(__GNUC__) && !defined(__STRICT_ANSI__) && !defined(PERL_GCC_PEDANTIC)
168 # define SvREFCNT_inc(sv) \
170 SV * const _sv = (SV*)(sv); \
176 # define SvREFCNT_inc(sv) \
177 ((PL_Sv=(SV*)(sv)) ? ((++(SvREFCNT(PL_Sv))),(PL_Sv)) : NULL)
180 #if defined(__GNUC__) && !defined(__STRICT_ANSI__) && !defined(PERL_GCC_PEDANTIC)
181 # define SvREFCNT_dec(sv) \
183 SV * const _sv = (SV*)(sv); \
185 if (SvREFCNT(_sv)) { \
186 if (--(SvREFCNT(_sv)) == 0) \
187 Perl_sv_free2(aTHX_ _sv); \
194 #define SvREFCNT_dec(sv) sv_free((SV*)(sv))
197 #define SVTYPEMASK 0xff
198 #define SvTYPE(sv) ((sv)->sv_flags & SVTYPEMASK)
200 /* Sadly there are some parts of the core that have pointers to already-freed
201 SV heads, and rely on being able to tell that they are now free. So mark
202 them all by using a consistent macro. */
203 #define SvIS_FREED(sv) ((sv)->sv_flags == SVTYPEMASK)
205 #define SvUPGRADE(sv, mt) (SvTYPE(sv) >= (mt) || (sv_upgrade(sv, mt), 1))
207 #define SVs_PADSTALE 0x00000100 /* lexical has gone out of scope */
208 #define SVs_PADTMP 0x00000200 /* in use as tmp */
209 #define SVs_PADMY 0x00000400 /* in use a "my" variable */
210 #define SVs_TEMP 0x00000800 /* string is stealable? */
211 #define SVs_OBJECT 0x00001000 /* is "blessed" */
212 #define SVs_GMG 0x00002000 /* has magical get method */
213 #define SVs_SMG 0x00004000 /* has magical set method */
214 #define SVs_RMG 0x00008000 /* has random magical methods */
216 #define SVf_IOK 0x00010000 /* has valid public integer value */
217 #define SVf_NOK 0x00020000 /* has valid public numeric value */
218 #define SVf_POK 0x00040000 /* has valid public pointer value */
219 #define SVf_ROK 0x00080000 /* has a valid reference pointer */
221 #define SVf_FAKE 0x00100000 /* glob or lexical is just a copy */
222 #define SVf_OOK 0x00200000 /* has valid offset value
223 For a PVHV this means that a
224 hv_aux struct is present after the
226 #define SVf_BREAK 0x00400000 /* refcnt is artificially low - used
227 * by SV's in final arena cleanup */
228 #define SVf_READONLY 0x00800000 /* may not be modified */
231 #define SVp_IOK 0x01000000 /* has valid non-public integer value */
232 #define SVp_NOK 0x02000000 /* has valid non-public numeric value */
233 #define SVp_POK 0x04000000 /* has valid non-public pointer value */
234 #define SVp_SCREAM 0x08000000 /* has been studied? */
236 #define SVf_UTF8 0x20000000 /* SvPV is UTF-8 encoded */
237 /* Ensure this value does not clash with the GV_ADD* flags in gv.h */
239 #define SVf_THINKFIRST (SVf_READONLY|SVf_ROK|SVf_FAKE)
241 #define SVf_OK (SVf_IOK|SVf_NOK|SVf_POK|SVf_ROK| \
242 SVp_IOK|SVp_NOK|SVp_POK)
244 #define SVf_AMAGIC 0x10000000 /* has magical overloaded methods */
246 #define PRIVSHIFT 8 /* (SVp_?OK >> PRIVSHIFT) == SVf_?OK */
248 /* Some private flags. */
250 /* SVpad_OUR may be set on SVt_PV{NV,MG,GV} types */
251 #define SVpad_OUR 0x80000000 /* pad name is "our" instead of "my" */
252 #define SVpad_TYPED 0x40000000 /* Typed Lexical */
254 #define SVf_IVisUV 0x80000000 /* use XPVUV instead of XPVIV */
256 #define SVpfm_COMPILED 0x80000000 /* FORMLINE is compiled */
258 #define SVpbm_VALID 0x80000000
259 #define SVpbm_TAIL 0x40000000
261 #define SVrepl_EVAL 0x40000000 /* Replacement part of s///e */
263 #define SVphv_CLONEABLE 0x08000000 /* for stashes: clone its objects */
264 #define SVphv_REHASH 0x10000000 /* HV is recalculating hash values */
265 #define SVphv_SHAREKEYS 0x20000000 /* keys live on shared string table */
266 #define SVphv_LAZYDEL 0x40000000 /* entry in xhv_eiter must be deleted */
267 #define SVphv_HASKFLAGS 0x80000000 /* keys have flag byte after hash */
269 #define SVprv_WEAKREF 0x80000000 /* Weak reference */
271 #define SVpav_REAL 0x40000000 /* free old entries */
272 #define SVpav_REIFY 0x80000000 /* can become real */
275 NV xnv_nv; /* numeric value, if any */
276 STRLEN xpv_cur; /* length of svu_pv as a C string */
277 STRLEN xpv_len; /* allocated size */
281 typedef struct xpv xpv_allocated;
284 STRLEN xpv_cur; /* length of svu_pv as a C string */
285 STRLEN xpv_len; /* allocated size */
290 NV xnv_nv; /* numeric value, if any */
291 STRLEN xpv_cur; /* length of svu_pv as a C string */
292 STRLEN xpv_len; /* allocated size */
294 IV xivu_iv; /* integer value or pv offset */
302 typedef struct xpviv xpviv_allocated;
305 STRLEN xpv_cur; /* length of svu_pv as a C string */
306 STRLEN xpv_len; /* allocated size */
308 IV xivu_iv; /* integer value or pv offset */
316 #define xiv_iv xiv_u.xivu_iv
319 NV xnv_nv; /* numeric value, if any */
320 STRLEN xpv_cur; /* length of svu_pv as a C string */
321 STRLEN xpv_len; /* allocated size */
324 UV xuvu_uv; /* unsigned value or pv offset */
329 #define xuv_uv xuv_u.xuvu_uv
332 NV xnv_nv; /* numeric value, if any */
333 STRLEN xpv_cur; /* length of svu_pv as a C string */
334 STRLEN xpv_len; /* allocated size */
336 IV xivu_iv; /* integer value or pv offset */
343 /* These structure must match the beginning of struct xpvhv in hv.h. */
345 NV xnv_nv; /* numeric value, if any */
346 STRLEN xpv_cur; /* length of svu_pv as a C string */
347 STRLEN xpv_len; /* allocated size */
349 IV xivu_iv; /* integer value or pv offset */
354 MAGIC* xmg_magic; /* linked list of magicalness */
355 HV* xmg_stash; /* class package */
359 NV xnv_nv; /* numeric value, if any */
360 STRLEN xpv_cur; /* length of svu_pv as a C string */
361 STRLEN xpv_len; /* allocated size */
363 IV xivu_iv; /* integer value or pv offset */
368 MAGIC* xmg_magic; /* linked list of magicalness */
369 HV* xmg_stash; /* class package */
371 /* a full glob fits into this */
381 char xlv_type; /* k=keys .=pos x=substr v=vec /=join/re
382 * y=alem/helem/iter t=tie T=tied HE */
386 NV xnv_nv; /* numeric value, if any */
387 STRLEN xpv_cur; /* length of svu_pv as a C string */
388 STRLEN xpv_len; /* allocated size */
390 IV xivu_iv; /* integer value or pv offset */
395 MAGIC* xmg_magic; /* linked list of magicalness */
396 HV* xmg_stash; /* class package */
406 NV xnv_nv; /* numeric value, if any */
407 STRLEN xpv_cur; /* length of svu_pv as a C string */
408 STRLEN xpv_len; /* allocated size */
410 IV xivu_iv; /* integer value or pv offset */
415 MAGIC* xmg_magic; /* linked list of magicalness */
416 HV* xmg_stash; /* class package */
418 I32 xbm_useful; /* is this constant pattern being useful? */
419 U16 xbm_previous; /* how many characters in string before rare? */
420 U8 xbm_rare; /* rarest character in string */
423 /* This structure must match XPVCV in cv.h */
425 typedef U16 cv_flags_t;
428 NV xnv_nv; /* numeric value, if any */
429 STRLEN xpv_cur; /* length of svu_pv as a C string */
430 STRLEN xpv_len; /* allocated size */
432 IV xivu_iv; /* PVFMs use the pv offset */
437 MAGIC* xmg_magic; /* linked list of magicalness */
438 HV* xmg_stash; /* class package */
447 void (*xcv_xsub) (pTHX_ CV*);
453 U32 xcv_outside_seq; /* the COP sequence (at the point of our
454 * compilation) in the lexically enclosing
456 cv_flags_t xcv_flags;
461 STRLEN xpv_cur; /* length of svu_pv as a C string */
462 STRLEN xpv_len; /* allocated size */
464 IV xivu_iv; /* PVFMs use the pv offset */
469 MAGIC* xmg_magic; /* linked list of magicalness */
470 HV* xmg_stash; /* class package */
479 void (*xcv_xsub) (pTHX_ CV*);
485 U32 xcv_outside_seq; /* the COP sequence (at the point of our
486 * compilation) in the lexically enclosing
488 cv_flags_t xcv_flags;
493 NV xnv_nv; /* numeric value, if any */
494 STRLEN xpv_cur; /* length of svu_pv as a C string */
495 STRLEN xpv_len; /* allocated size */
497 IV xivu_iv; /* integer value or pv offset */
502 MAGIC* xmg_magic; /* linked list of magicalness */
503 HV* xmg_stash; /* class package */
505 PerlIO * xio_ifp; /* ifp and ofp are normally the same */
506 PerlIO * xio_ofp; /* but sockets need separate streams */
507 /* Cray addresses everything by word boundaries (64 bits) and
508 * code and data pointers cannot be mixed (which is exactly what
509 * Perl_filter_add() tries to do with the dirp), hence the following
510 * union trick (as suggested by Gurusamy Sarathy).
511 * For further information see Geir Johansen's problem report titled
512 [ID 20000612.002] Perl problem on Cray system
513 * The any pointer (known as IoANY()) will also be a good place
514 * to hang any IO disciplines to.
517 DIR * xiou_dirp; /* for opendir, readdir, etc */
518 void * xiou_any; /* for alignment */
520 IV xio_lines; /* $. */
521 IV xio_page; /* $% */
522 IV xio_page_len; /* $= */
523 IV xio_lines_left; /* $- */
524 char * xio_top_name; /* $^ */
525 GV * xio_top_gv; /* $^ */
526 char * xio_fmt_name; /* $~ */
527 GV * xio_fmt_gv; /* $~ */
528 char * xio_bottom_name;/* $^B */
529 GV * xio_bottom_gv; /* $^B */
530 short xio_subprocess; /* -| or |- */
534 #define xio_dirp xio_dirpu.xiou_dirp
535 #define xio_any xio_dirpu.xiou_any
537 #define IOf_ARGV 1 /* this fp iterates over ARGV */
538 #define IOf_START 2 /* check for null ARGV and substitute '-' */
539 #define IOf_FLUSH 4 /* this fp wants a flush after write op */
540 #define IOf_DIDTOP 8 /* just did top of form */
541 #define IOf_UNTAINT 16 /* consider this fp (and its data) "safe" */
542 #define IOf_NOLINE 32 /* slurped a pseudo-line from empty file */
543 #define IOf_FAKE_DIRP 64 /* xio_dirp is fake (source filters kludge) */
545 /* The following macros define implementation-independent predicates on SVs. */
548 =for apidoc Am|bool|SvNIOK|SV* sv
549 Returns a boolean indicating whether the SV contains a number, integer or
552 =for apidoc Am|bool|SvNIOKp|SV* sv
553 Returns a boolean indicating whether the SV contains a number, integer or
554 double. Checks the B<private> setting. Use C<SvNIOK>.
556 =for apidoc Am|void|SvNIOK_off|SV* sv
557 Unsets the NV/IV status of an SV.
559 =for apidoc Am|bool|SvOK|SV* sv
560 Returns a boolean indicating whether the value is an SV. It also tells
561 whether the value is defined or not.
563 =for apidoc Am|bool|SvIOKp|SV* sv
564 Returns a boolean indicating whether the SV contains an integer. Checks
565 the B<private> setting. Use C<SvIOK>.
567 =for apidoc Am|bool|SvNOKp|SV* sv
568 Returns a boolean indicating whether the SV contains a double. Checks the
569 B<private> setting. Use C<SvNOK>.
571 =for apidoc Am|bool|SvPOKp|SV* sv
572 Returns a boolean indicating whether the SV contains a character string.
573 Checks the B<private> setting. Use C<SvPOK>.
575 =for apidoc Am|bool|SvIOK|SV* sv
576 Returns a boolean indicating whether the SV contains an integer.
578 =for apidoc Am|void|SvIOK_on|SV* sv
579 Tells an SV that it is an integer.
581 =for apidoc Am|void|SvIOK_off|SV* sv
582 Unsets the IV status of an SV.
584 =for apidoc Am|void|SvIOK_only|SV* sv
585 Tells an SV that it is an integer and disables all other OK bits.
587 =for apidoc Am|void|SvIOK_only_UV|SV* sv
588 Tells and SV that it is an unsigned integer and disables all other OK bits.
590 =for apidoc Am|bool|SvIOK_UV|SV* sv
591 Returns a boolean indicating whether the SV contains an unsigned integer.
593 =for apidoc Am|void|SvUOK|SV* sv
594 Returns a boolean indicating whether the SV contains an unsigned integer.
596 =for apidoc Am|bool|SvIOK_notUV|SV* sv
597 Returns a boolean indicating whether the SV contains a signed integer.
599 =for apidoc Am|bool|SvNOK|SV* sv
600 Returns a boolean indicating whether the SV contains a double.
602 =for apidoc Am|void|SvNOK_on|SV* sv
603 Tells an SV that it is a double.
605 =for apidoc Am|void|SvNOK_off|SV* sv
606 Unsets the NV status of an SV.
608 =for apidoc Am|void|SvNOK_only|SV* sv
609 Tells an SV that it is a double and disables all other OK bits.
611 =for apidoc Am|bool|SvPOK|SV* sv
612 Returns a boolean indicating whether the SV contains a character
615 =for apidoc Am|void|SvPOK_on|SV* sv
616 Tells an SV that it is a string.
618 =for apidoc Am|void|SvPOK_off|SV* sv
619 Unsets the PV status of an SV.
621 =for apidoc Am|void|SvPOK_only|SV* sv
622 Tells an SV that it is a string and disables all other OK bits.
623 Will also turn off the UTF-8 status.
625 =for apidoc Am|bool|SvVOK|SV* sv
626 Returns a boolean indicating whether the SV contains a v-string.
628 =for apidoc Am|bool|SvOOK|SV* sv
629 Returns a boolean indicating whether the SvIVX is a valid offset value for
630 the SvPVX. This hack is used internally to speed up removal of characters
631 from the beginning of a SvPV. When SvOOK is true, then the start of the
632 allocated string buffer is really (SvPVX - SvIVX).
634 =for apidoc Am|bool|SvROK|SV* sv
635 Tests if the SV is an RV.
637 =for apidoc Am|void|SvROK_on|SV* sv
638 Tells an SV that it is an RV.
640 =for apidoc Am|void|SvROK_off|SV* sv
641 Unsets the RV status of an SV.
643 =for apidoc Am|SV*|SvRV|SV* sv
644 Dereferences an RV to return the SV.
646 =for apidoc Am|IV|SvIVX|SV* sv
647 Returns the raw value in the SV's IV slot, without checks or conversions.
648 Only use when you are sure SvIOK is true. See also C<SvIV()>.
650 =for apidoc Am|UV|SvUVX|SV* sv
651 Returns the raw value in the SV's UV slot, without checks or conversions.
652 Only use when you are sure SvIOK is true. See also C<SvUV()>.
654 =for apidoc Am|NV|SvNVX|SV* sv
655 Returns the raw value in the SV's NV slot, without checks or conversions.
656 Only use when you are sure SvNOK is true. See also C<SvNV()>.
658 =for apidoc Am|char*|SvPVX|SV* sv
659 Returns a pointer to the physical string in the SV. The SV must contain a
662 =for apidoc Am|STRLEN|SvCUR|SV* sv
663 Returns the length of the string which is in the SV. See C<SvLEN>.
665 =for apidoc Am|STRLEN|SvLEN|SV* sv
666 Returns the size of the string buffer in the SV, not including any part
667 attributable to C<SvOOK>. See C<SvCUR>.
669 =for apidoc Am|char*|SvEND|SV* sv
670 Returns a pointer to the last character in the string which is in the SV.
671 See C<SvCUR>. Access the character as *(SvEND(sv)).
673 =for apidoc Am|HV*|SvSTASH|SV* sv
674 Returns the stash of the SV.
676 =for apidoc Am|void|SvIV_set|SV* sv|IV val
677 Set the value of the IV pointer in sv to val. It is possible to perform
678 the same function of this macro with an lvalue assignment to C<SvIVX>.
679 With future Perls, however, it will be more efficient to use
680 C<SvIV_set> instead of the lvalue assignment to C<SvIVX>.
682 =for apidoc Am|void|SvNV_set|SV* sv|NV val
683 Set the value of the NV pointer in sv to val. See C<SvIV_set>.
685 =for apidoc Am|void|SvPV_set|SV* sv|char* val
686 Set the value of the PV pointer in sv to val. See C<SvIV_set>.
688 =for apidoc Am|void|SvUV_set|SV* sv|UV val
689 Set the value of the UV pointer in sv to val. See C<SvIV_set>.
691 =for apidoc Am|void|SvRV_set|SV* sv|SV* val
692 Set the value of the RV pointer in sv to val. See C<SvIV_set>.
694 =for apidoc Am|void|SvMAGIC_set|SV* sv|MAGIC* val
695 Set the value of the MAGIC pointer in sv to val. See C<SvIV_set>.
697 =for apidoc Am|void|SvSTASH_set|SV* sv|STASH* val
698 Set the value of the STASH pointer in sv to val. See C<SvIV_set>.
700 =for apidoc Am|void|SvCUR_set|SV* sv|STRLEN len
701 Set the current length of the string which is in the SV. See C<SvCUR>
704 =for apidoc Am|void|SvLEN_set|SV* sv|STRLEN len
705 Set the actual length of the string which is in the SV. See C<SvIV_set>.
710 #define SvNIOK(sv) (SvFLAGS(sv) & (SVf_IOK|SVf_NOK))
711 #define SvNIOKp(sv) (SvFLAGS(sv) & (SVp_IOK|SVp_NOK))
712 #define SvNIOK_off(sv) (SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK| \
713 SVp_IOK|SVp_NOK|SVf_IVisUV))
715 #if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
716 #define assert_not_ROK(sv) ({assert(!SvROK(sv) || !SvRV(sv));}),
718 #define assert_not_ROK(sv)
721 #define SvOK(sv) (SvFLAGS(sv) & SVf_OK)
722 #define SvOK_off(sv) (assert_not_ROK(sv) \
723 SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \
724 SVf_IVisUV|SVf_UTF8), \
726 #define SvOK_off_exc_UV(sv) (assert_not_ROK(sv) \
727 SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \
731 #define SvOKp(sv) (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK))
732 #define SvIOKp(sv) (SvFLAGS(sv) & SVp_IOK)
733 #define SvIOKp_on(sv) (SvRELEASE_IVX(sv), \
734 SvFLAGS(sv) |= SVp_IOK)
735 #define SvNOKp(sv) (SvFLAGS(sv) & SVp_NOK)
736 #define SvNOKp_on(sv) (SvFLAGS(sv) |= SVp_NOK)
737 #define SvPOKp(sv) (SvFLAGS(sv) & SVp_POK)
738 #define SvPOKp_on(sv) (assert_not_ROK(sv) \
739 SvFLAGS(sv) |= SVp_POK)
741 #define SvIOK(sv) (SvFLAGS(sv) & SVf_IOK)
742 #define SvIOK_on(sv) (SvRELEASE_IVX(sv), \
743 SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
744 #define SvIOK_off(sv) (SvFLAGS(sv) &= ~(SVf_IOK|SVp_IOK|SVf_IVisUV))
745 #define SvIOK_only(sv) (SvOK_off(sv), \
746 SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
747 #define SvIOK_only_UV(sv) (SvOK_off_exc_UV(sv), \
748 SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
750 #define SvIOK_UV(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV)) \
751 == (SVf_IOK|SVf_IVisUV))
752 #define SvUOK(sv) SvIOK_UV(sv)
753 #define SvIOK_notUV(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV)) \
756 #define SvIsUV(sv) (SvFLAGS(sv) & SVf_IVisUV)
757 #define SvIsUV_on(sv) (SvFLAGS(sv) |= SVf_IVisUV)
758 #define SvIsUV_off(sv) (SvFLAGS(sv) &= ~SVf_IVisUV)
760 #define SvNOK(sv) (SvFLAGS(sv) & SVf_NOK)
761 #define SvNOK_on(sv) (SvFLAGS(sv) |= (SVf_NOK|SVp_NOK))
762 #define SvNOK_off(sv) (SvFLAGS(sv) &= ~(SVf_NOK|SVp_NOK))
763 #define SvNOK_only(sv) (SvOK_off(sv), \
764 SvFLAGS(sv) |= (SVf_NOK|SVp_NOK))
767 =for apidoc Am|bool|SvUTF8|SV* sv
768 Returns a boolean indicating whether the SV contains UTF-8 encoded data.
770 =for apidoc Am|void|SvUTF8_on|SV *sv
771 Turn on the UTF-8 status of an SV (the data is not changed, just the flag).
772 Do not use frivolously.
774 =for apidoc Am|void|SvUTF8_off|SV *sv
775 Unsets the UTF-8 status of an SV.
777 =for apidoc Am|void|SvPOK_only_UTF8|SV* sv
778 Tells an SV that it is a string and disables all other OK bits,
779 and leaves the UTF-8 status as it was.
784 /* Ensure the return value of this macro does not clash with the GV_ADD* flags
786 #define SvUTF8(sv) (SvFLAGS(sv) & SVf_UTF8)
787 #define SvUTF8_on(sv) (SvFLAGS(sv) |= (SVf_UTF8))
788 #define SvUTF8_off(sv) (SvFLAGS(sv) &= ~(SVf_UTF8))
790 #define SvPOK(sv) (SvFLAGS(sv) & SVf_POK)
791 #define SvPOK_on(sv) (assert_not_ROK(sv) \
792 SvFLAGS(sv) |= (SVf_POK|SVp_POK))
793 #define SvPOK_off(sv) (SvFLAGS(sv) &= ~(SVf_POK|SVp_POK))
794 #define SvPOK_only(sv) (assert_not_ROK(sv) \
795 SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \
796 SVf_IVisUV|SVf_UTF8), \
797 SvFLAGS(sv) |= (SVf_POK|SVp_POK))
798 #define SvPOK_only_UTF8(sv) (assert_not_ROK(sv) \
799 SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \
801 SvFLAGS(sv) |= (SVf_POK|SVp_POK))
803 #define SvVOK(sv) (SvMAGICAL(sv) \
804 ? mg_find(sv,PERL_MAGIC_vstring) : NULL)
805 #define SvOOK(sv) (SvFLAGS(sv) & SVf_OOK)
806 #define SvOOK_on(sv) ((void)SvIOK_off(sv), SvFLAGS(sv) |= SVf_OOK)
807 #define SvOOK_off(sv) ((void)(SvOOK(sv) && sv_backoff(sv)))
809 #define SvFAKE(sv) (SvFLAGS(sv) & SVf_FAKE)
810 #define SvFAKE_on(sv) (SvFLAGS(sv) |= SVf_FAKE)
811 #define SvFAKE_off(sv) (SvFLAGS(sv) &= ~SVf_FAKE)
813 #define SvROK(sv) (SvFLAGS(sv) & SVf_ROK)
814 #define SvROK_on(sv) (SvFLAGS(sv) |= SVf_ROK)
815 #define SvROK_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK|SVf_AMAGIC))
817 #define SvMAGICAL(sv) (SvFLAGS(sv) & (SVs_GMG|SVs_SMG|SVs_RMG))
818 #define SvMAGICAL_on(sv) (SvFLAGS(sv) |= (SVs_GMG|SVs_SMG|SVs_RMG))
819 #define SvMAGICAL_off(sv) (SvFLAGS(sv) &= ~(SVs_GMG|SVs_SMG|SVs_RMG))
821 #define SvGMAGICAL(sv) (SvFLAGS(sv) & SVs_GMG)
822 #define SvGMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_GMG)
823 #define SvGMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_GMG)
825 #define SvSMAGICAL(sv) (SvFLAGS(sv) & SVs_SMG)
826 #define SvSMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_SMG)
827 #define SvSMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_SMG)
829 #define SvRMAGICAL(sv) (SvFLAGS(sv) & SVs_RMG)
830 #define SvRMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_RMG)
831 #define SvRMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_RMG)
833 #define SvAMAGIC(sv) (SvFLAGS(sv) & SVf_AMAGIC)
834 #define SvAMAGIC_on(sv) (SvFLAGS(sv) |= SVf_AMAGIC)
835 #define SvAMAGIC_off(sv) (SvFLAGS(sv) &= ~SVf_AMAGIC)
837 #define SvGAMAGIC(sv) (SvFLAGS(sv) & (SVs_GMG|SVf_AMAGIC))
840 #define Gv_AMG(stash) \
841 (HV_AMAGICmb(stash) && \
842 ((!HV_AMAGICbad(stash) && HV_AMAGIC(stash)) || Gv_AMupdate(stash)))
844 #define Gv_AMG(stash) (PL_amagic_generation && Gv_AMupdate(stash))
846 #define SvWEAKREF(sv) ((SvFLAGS(sv) & (SVf_ROK|SVprv_WEAKREF)) \
847 == (SVf_ROK|SVprv_WEAKREF))
848 #define SvWEAKREF_on(sv) (SvFLAGS(sv) |= (SVf_ROK|SVprv_WEAKREF))
849 #define SvWEAKREF_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK|SVprv_WEAKREF))
851 #define SvTHINKFIRST(sv) (SvFLAGS(sv) & SVf_THINKFIRST)
853 #define SvPADSTALE(sv) (SvFLAGS(sv) & SVs_PADSTALE)
854 #define SvPADSTALE_on(sv) (SvFLAGS(sv) |= SVs_PADSTALE)
855 #define SvPADSTALE_off(sv) (SvFLAGS(sv) &= ~SVs_PADSTALE)
857 #define SvPADTMP(sv) (SvFLAGS(sv) & SVs_PADTMP)
858 #define SvPADTMP_on(sv) (SvFLAGS(sv) |= SVs_PADTMP)
859 #define SvPADTMP_off(sv) (SvFLAGS(sv) &= ~SVs_PADTMP)
861 #define SvPADMY(sv) (SvFLAGS(sv) & SVs_PADMY)
862 #define SvPADMY_on(sv) (SvFLAGS(sv) |= SVs_PADMY)
864 #define SvTEMP(sv) (SvFLAGS(sv) & SVs_TEMP)
865 #define SvTEMP_on(sv) (SvFLAGS(sv) |= SVs_TEMP)
866 #define SvTEMP_off(sv) (SvFLAGS(sv) &= ~SVs_TEMP)
868 #define SvOBJECT(sv) (SvFLAGS(sv) & SVs_OBJECT)
869 #define SvOBJECT_on(sv) (SvFLAGS(sv) |= SVs_OBJECT)
870 #define SvOBJECT_off(sv) (SvFLAGS(sv) &= ~SVs_OBJECT)
872 #define SvREADONLY(sv) (SvFLAGS(sv) & SVf_READONLY)
873 #define SvREADONLY_on(sv) (SvFLAGS(sv) |= SVf_READONLY)
874 #define SvREADONLY_off(sv) (SvFLAGS(sv) &= ~SVf_READONLY)
876 #define SvSCREAM(sv) (SvFLAGS(sv) & SVp_SCREAM)
877 #define SvSCREAM_on(sv) (SvFLAGS(sv) |= SVp_SCREAM)
878 #define SvSCREAM_off(sv) (SvFLAGS(sv) &= ~SVp_SCREAM)
880 #define SvCOMPILED(sv) (SvFLAGS(sv) & SVpfm_COMPILED)
881 #define SvCOMPILED_on(sv) (SvFLAGS(sv) |= SVpfm_COMPILED)
882 #define SvCOMPILED_off(sv) (SvFLAGS(sv) &= ~SVpfm_COMPILED)
884 #define SvEVALED(sv) (SvFLAGS(sv) & SVrepl_EVAL)
885 #define SvEVALED_on(sv) (SvFLAGS(sv) |= SVrepl_EVAL)
886 #define SvEVALED_off(sv) (SvFLAGS(sv) &= ~SVrepl_EVAL)
888 #define SvTAIL(sv) (SvFLAGS(sv) & SVpbm_TAIL)
889 #define SvTAIL_on(sv) (SvFLAGS(sv) |= SVpbm_TAIL)
890 #define SvTAIL_off(sv) (SvFLAGS(sv) &= ~SVpbm_TAIL)
892 #define SvVALID(sv) (SvFLAGS(sv) & SVpbm_VALID)
893 #define SvVALID_on(sv) (SvFLAGS(sv) |= SVpbm_VALID)
894 #define SvVALID_off(sv) (SvFLAGS(sv) &= ~SVpbm_VALID)
897 /* The following uses the FAKE flag to show that a regex pointer is infact
898 its own offset in the regexpad for ithreads */
899 #define SvREPADTMP(sv) (SvFLAGS(sv) & SVf_FAKE)
900 #define SvREPADTMP_on(sv) (SvFLAGS(sv) |= SVf_FAKE)
901 #define SvREPADTMP_off(sv) (SvFLAGS(sv) &= ~SVf_FAKE)
904 #ifdef PERL_DEBUG_COW
905 #define SvRV(sv) (0 + (sv)->sv_u.svu_rv)
907 #define SvRV(sv) ((sv)->sv_u.svu_rv)
909 #define SvRVx(sv) SvRV(sv)
911 #ifdef PERL_DEBUG_COW
912 /* Need -0.0 for SvNVX to preserve IEEE FP "negative zero" because
913 +0.0 + -0.0 => +0.0 but -0.0 + -0.0 => -0.0 */
914 # define SvIVX(sv) (0 + ((XPVIV*) SvANY(sv))->xiv_iv)
915 # define SvUVX(sv) (0 + ((XPVUV*) SvANY(sv))->xuv_uv)
916 # define SvNVX(sv) (-0.0 + ((XPVNV*) SvANY(sv))->xnv_nv)
917 /* Don't test the core XS code yet. */
918 # if defined (PERL_CORE) && PERL_DEBUG_COW > 1
919 # define SvPVX(sv) (0 + (assert(!SvREADONLY(sv)), (sv)->sv_u.svu_pv))
921 # define SvPVX(sv) SvPVX_mutable(sv)
923 # define SvCUR(sv) (0 + ((XPV*) SvANY(sv))->xpv_cur)
924 # define SvLEN(sv) (0 + ((XPV*) SvANY(sv))->xpv_len)
925 # define SvEND(sv) ((sv)->sv_u.svu_pv + ((XPV*)SvANY(sv))->xpv_cur)
929 /* Can't make this RVALUE because of Perl_sv_unmagic. */
930 # define SvMAGIC(sv) (*(assert(SvTYPE(sv) >= SVt_PVMG), &((XPVMG*) SvANY(sv))->xmg_magic))
932 # define SvMAGIC(sv) (0 + *(assert(SvTYPE(sv) >= SVt_PVMG), &((XPVMG*) SvANY(sv))->xmg_magic))
934 # define SvSTASH(sv) (0 + *(assert(SvTYPE(sv) >= SVt_PVMG), &((XPVMG*) SvANY(sv))->xmg_stash))
937 # define SvMAGIC(sv) ((XPVMG*) SvANY(sv))->xmg_magic
939 # define SvMAGIC(sv) (0 + ((XPVMG*) SvANY(sv))->xmg_magic)
941 # define SvSTASH(sv) (0 + ((XPVMG*) SvANY(sv))->xmg_stash)
944 # define SvPVX(sv) ((sv)->sv_u.svu_pv)
945 # define SvCUR(sv) ((XPV*) SvANY(sv))->xpv_cur
946 # define SvLEN(sv) ((XPV*) SvANY(sv))->xpv_len
947 # define SvEND(sv) ((sv)->sv_u.svu_pv + ((XPV*)SvANY(sv))->xpv_cur)
949 # if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
950 /* These get expanded inside other macros that already use a variable _sv */
952 (*({ SV *const _svi = (SV *) sv; \
953 assert(SvTYPE(_svi) == SVt_IV || SvTYPE(_svi) >= SVt_PVIV); \
954 assert(SvTYPE(_svi) != SVt_PVAV); \
955 assert(SvTYPE(_svi) != SVt_PVHV); \
956 assert(SvTYPE(_svi) != SVt_PVCV); \
957 &(((XPVIV*) SvANY(_svi))->xiv_iv); \
960 (*({ SV *const _svi = (SV *) sv; \
961 assert(SvTYPE(_svi) == SVt_IV || SvTYPE(_svi) >= SVt_PVIV); \
962 assert(SvTYPE(_svi) != SVt_PVAV); \
963 assert(SvTYPE(_svi) != SVt_PVHV); \
964 assert(SvTYPE(_svi) != SVt_PVCV); \
965 &(((XPVUV*) SvANY(_svi))->xuv_uv); \
968 (*({ SV *const _svi = (SV *) sv; \
969 assert(SvTYPE(_svi) == SVt_NV || SvTYPE(_svi) >= SVt_PVNV); \
970 assert(SvTYPE(_svi) != SVt_PVAV); \
971 assert(SvTYPE(_svi) != SVt_PVHV); \
972 assert(SvTYPE(_svi) != SVt_PVFM); \
973 &(((XPVNV*) SvANY(_svi))->xnv_nv); \
975 # define SvMAGIC(sv) \
976 (*({ SV *const _svi = (SV *) sv; \
977 assert(SvTYPE(_svi) >= SVt_PVMG); \
978 &(((XPVMG*) SvANY(_svi))->xmg_magic); \
980 # define SvSTASH(sv) \
981 (*({ SV *const _svi = (SV *) sv; \
982 assert(SvTYPE(_svi) >= SVt_PVMG); \
983 &(((XPVMG*) SvANY(_svi))->xmg_stash); \
986 # define SvIVX(sv) ((XPVIV*) SvANY(sv))->xiv_iv
987 # define SvUVX(sv) ((XPVUV*) SvANY(sv))->xuv_uv
988 # define SvNVX(sv) ((XPVNV*) SvANY(sv))->xnv_nv
989 # define SvMAGIC(sv) ((XPVMG*) SvANY(sv))->xmg_magic
990 # define SvSTASH(sv) ((XPVMG*) SvANY(sv))->xmg_stash
995 /* Given that these two are new, there can't be any existing code using them
997 # define SvPVX_mutable(sv) (0 + (sv)->sv_u.svu_pv)
998 # define SvPVX_const(sv) ((const char*)(0 + (sv)->sv_u.svu_pv))
1000 /* Except for the poison code, which uses & to scribble over the pointer after
1001 free() is called. */
1002 # define SvPVX_mutable(sv) ((sv)->sv_u.svu_pv)
1003 # define SvPVX_const(sv) ((const char*)((sv)->sv_u.svu_pv))
1006 #define SvIVXx(sv) SvIVX(sv)
1007 #define SvUVXx(sv) SvUVX(sv)
1008 #define SvNVXx(sv) SvNVX(sv)
1009 #define SvPVXx(sv) SvPVX(sv)
1010 #define SvLENx(sv) SvLEN(sv)
1011 #define SvENDx(sv) ((PL_Sv = (sv)), SvEND(PL_Sv))
1014 /* Ask a scalar nicely to try to become an IV, if possible.
1015 Not guaranteed to stay returning void */
1016 /* Macro won't actually call sv_2iv if already IOK */
1017 #define SvIV_please(sv) \
1018 STMT_START {if (!SvIOKp(sv) && (SvNOK(sv) || SvPOK(sv))) \
1019 (void) SvIV(sv); } STMT_END
1020 #define SvIV_set(sv, val) \
1021 STMT_START { assert(SvTYPE(sv) == SVt_IV || SvTYPE(sv) >= SVt_PVIV); \
1022 (((XPVIV*) SvANY(sv))->xiv_iv = (val)); } STMT_END
1023 #define SvNV_set(sv, val) \
1024 STMT_START { assert(SvTYPE(sv) == SVt_NV || SvTYPE(sv) >= SVt_PVNV); \
1025 assert(SvTYPE(sv) != SVt_PVAV); assert(SvTYPE(sv) != SVt_PVHV); \
1026 (((XPVNV*)SvANY(sv))->xnv_nv = (val)); } STMT_END
1027 #define SvPV_set(sv, val) \
1028 STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
1029 ((sv)->sv_u.svu_pv = (val)); } STMT_END
1030 #define SvUV_set(sv, val) \
1031 STMT_START { assert(SvTYPE(sv) == SVt_IV || SvTYPE(sv) >= SVt_PVIV); \
1032 (((XPVUV*)SvANY(sv))->xuv_uv = (val)); } STMT_END
1033 #define SvRV_set(sv, val) \
1034 STMT_START { assert(SvTYPE(sv) >= SVt_RV); \
1035 ((sv)->sv_u.svu_rv = (val)); } STMT_END
1036 #define SvMAGIC_set(sv, val) \
1037 STMT_START { assert(SvTYPE(sv) >= SVt_PVMG); \
1038 (((XPVMG*)SvANY(sv))->xmg_magic = (val)); } STMT_END
1039 #define SvSTASH_set(sv, val) \
1040 STMT_START { assert(SvTYPE(sv) >= SVt_PVMG); \
1041 (((XPVMG*) SvANY(sv))->xmg_stash = (val)); } STMT_END
1042 #define SvCUR_set(sv, val) \
1043 STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
1044 (((XPV*) SvANY(sv))->xpv_cur = (val)); } STMT_END
1045 #define SvLEN_set(sv, val) \
1046 STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
1047 (((XPV*) SvANY(sv))->xpv_len = (val)); } STMT_END
1048 #define SvEND_set(sv, val) \
1049 STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
1050 (SvCUR(sv) = (val) - SvPVX(sv)); } STMT_END
1052 #define SvPV_renew(sv,n) \
1053 STMT_START { SvLEN_set(sv, n); \
1054 SvPV_set((sv), (MEM_WRAP_CHECK_(n,char) \
1055 (char*)saferealloc((Malloc_t)SvPVX(sv), \
1056 (MEM_SIZE)((n))))); \
1059 #define SvPV_shrink_to_cur(sv) STMT_START { \
1060 const STRLEN _lEnGtH = SvCUR(sv) + 1; \
1061 SvPV_renew(sv, _lEnGtH); \
1064 #define SvPV_free(sv) \
1066 assert(SvTYPE(sv) >= SVt_PV); \
1069 SvPV_set(sv, SvPVX_mutable(sv) - SvIVX(sv)); \
1070 SvFLAGS(sv) &= ~SVf_OOK; \
1072 Safefree(SvPVX(sv)); \
1076 #define BmRARE(sv) ((XPVBM*) SvANY(sv))->xbm_rare
1077 #define BmUSEFUL(sv) ((XPVBM*) SvANY(sv))->xbm_useful
1078 #define BmPREVIOUS(sv) ((XPVBM*) SvANY(sv))->xbm_previous
1080 #define FmLINES(sv) ((XPVFM*) SvANY(sv))->xfm_lines
1082 #define LvTYPE(sv) ((XPVLV*) SvANY(sv))->xlv_type
1083 #define LvTARG(sv) ((XPVLV*) SvANY(sv))->xlv_targ
1084 #define LvTARGOFF(sv) ((XPVLV*) SvANY(sv))->xlv_targoff
1085 #define LvTARGLEN(sv) ((XPVLV*) SvANY(sv))->xlv_targlen
1087 #define IoIFP(sv) ((XPVIO*) SvANY(sv))->xio_ifp
1088 #define IoOFP(sv) ((XPVIO*) SvANY(sv))->xio_ofp
1089 #define IoDIRP(sv) ((XPVIO*) SvANY(sv))->xio_dirp
1090 #define IoANY(sv) ((XPVIO*) SvANY(sv))->xio_any
1091 #define IoLINES(sv) ((XPVIO*) SvANY(sv))->xio_lines
1092 #define IoPAGE(sv) ((XPVIO*) SvANY(sv))->xio_page
1093 #define IoPAGE_LEN(sv) ((XPVIO*) SvANY(sv))->xio_page_len
1094 #define IoLINES_LEFT(sv)((XPVIO*) SvANY(sv))->xio_lines_left
1095 #define IoTOP_NAME(sv) ((XPVIO*) SvANY(sv))->xio_top_name
1096 #define IoTOP_GV(sv) ((XPVIO*) SvANY(sv))->xio_top_gv
1097 #define IoFMT_NAME(sv) ((XPVIO*) SvANY(sv))->xio_fmt_name
1098 #define IoFMT_GV(sv) ((XPVIO*) SvANY(sv))->xio_fmt_gv
1099 #define IoBOTTOM_NAME(sv)((XPVIO*) SvANY(sv))->xio_bottom_name
1100 #define IoBOTTOM_GV(sv) ((XPVIO*) SvANY(sv))->xio_bottom_gv
1101 #define IoSUBPROCESS(sv)((XPVIO*) SvANY(sv))->xio_subprocess
1102 #define IoTYPE(sv) ((XPVIO*) SvANY(sv))->xio_type
1103 #define IoFLAGS(sv) ((XPVIO*) SvANY(sv))->xio_flags
1105 /* IoTYPE(sv) is a single character telling the type of I/O connection. */
1106 #define IoTYPE_RDONLY '<'
1107 #define IoTYPE_WRONLY '>'
1108 #define IoTYPE_RDWR '+'
1109 #define IoTYPE_APPEND 'a'
1110 #define IoTYPE_PIPE '|'
1111 #define IoTYPE_STD '-' /* stdin or stdout */
1112 #define IoTYPE_SOCKET 's'
1113 #define IoTYPE_CLOSED ' '
1114 #define IoTYPE_IMPLICIT 'I' /* stdin or stdout or stderr */
1115 #define IoTYPE_NUMERIC '#' /* fdopen */
1118 =for apidoc Am|bool|SvTAINTED|SV* sv
1119 Checks to see if an SV is tainted. Returns TRUE if it is, FALSE if
1122 =for apidoc Am|void|SvTAINTED_on|SV* sv
1123 Marks an SV as tainted if tainting is enabled.
1125 =for apidoc Am|void|SvTAINTED_off|SV* sv
1126 Untaints an SV. Be I<very> careful with this routine, as it short-circuits
1127 some of Perl's fundamental security features. XS module authors should not
1128 use this function unless they fully understand all the implications of
1129 unconditionally untainting the value. Untainting should be done in the
1130 standard perl fashion, via a carefully crafted regexp, rather than directly
1131 untainting variables.
1133 =for apidoc Am|void|SvTAINT|SV* sv
1134 Taints an SV if tainting is enabled.
1139 #define sv_taint(sv) sv_magic((sv), NULL, PERL_MAGIC_taint, NULL, 0)
1141 #define SvTAINTED(sv) (SvMAGICAL(sv) && sv_tainted(sv))
1142 #define SvTAINTED_on(sv) STMT_START{ if(PL_tainting){sv_taint(sv);} }STMT_END
1143 #define SvTAINTED_off(sv) STMT_START{ if(PL_tainting){sv_untaint(sv);} }STMT_END
1145 #define SvTAINT(sv) \
1147 if (PL_tainting) { \
1154 =for apidoc Am|char*|SvPV_force|SV* sv|STRLEN len
1155 Like C<SvPV> but will force the SV into containing just a string
1156 (C<SvPOK_only>). You want force if you are going to update the C<SvPVX>
1159 =for apidoc Am|char*|SvPV_force_nomg|SV* sv|STRLEN len
1160 Like C<SvPV> but will force the SV into containing just a string
1161 (C<SvPOK_only>). You want force if you are going to update the C<SvPVX>
1162 directly. Doesn't process magic.
1164 =for apidoc Am|char*|SvPV|SV* sv|STRLEN len
1165 Returns a pointer to the string in the SV, or a stringified form of
1166 the SV if the SV does not contain a string. The SV may cache the
1167 stringified version becoming C<SvPOK>. Handles 'get' magic. See also
1168 C<SvPVx> for a version which guarantees to evaluate sv only once.
1170 =for apidoc Am|char*|SvPVx|SV* sv|STRLEN len
1171 A version of C<SvPV> which guarantees to evaluate sv only once.
1173 =for apidoc Am|char*|SvPV_nomg|SV* sv|STRLEN len
1174 Like C<SvPV> but doesn't process magic.
1176 =for apidoc Am|char*|SvPV_nolen|SV* sv
1177 Returns a pointer to the string in the SV, or a stringified form of
1178 the SV if the SV does not contain a string. The SV may cache the
1179 stringified form becoming C<SvPOK>. Handles 'get' magic.
1181 =for apidoc Am|IV|SvIV|SV* sv
1182 Coerces the given SV to an integer and returns it. See C<SvIVx> for a
1183 version which guarantees to evaluate sv only once.
1185 =for apidoc Am|IV|SvIV_nomg|SV* sv
1186 Like C<SvIV> but doesn't process magic.
1188 =for apidoc Am|IV|SvIVx|SV* sv
1189 Coerces the given SV to an integer and returns it. Guarantees to evaluate
1190 sv only once. Use the more efficient C<SvIV> otherwise.
1192 =for apidoc Am|NV|SvNV|SV* sv
1193 Coerce the given SV to a double and return it. See C<SvNVx> for a version
1194 which guarantees to evaluate sv only once.
1196 =for apidoc Am|NV|SvNVx|SV* sv
1197 Coerces the given SV to a double and returns it. Guarantees to evaluate
1198 sv only once. Use the more efficient C<SvNV> otherwise.
1200 =for apidoc Am|UV|SvUV|SV* sv
1201 Coerces the given SV to an unsigned integer and returns it. See C<SvUVx>
1202 for a version which guarantees to evaluate sv only once.
1204 =for apidoc Am|UV|SvUV_nomg|SV* sv
1205 Like C<SvUV> but doesn't process magic.
1207 =for apidoc Am|UV|SvUVx|SV* sv
1208 Coerces the given SV to an unsigned integer and returns it. Guarantees to
1209 evaluate sv only once. Use the more efficient C<SvUV> otherwise.
1211 =for apidoc Am|bool|SvTRUE|SV* sv
1212 Returns a boolean indicating whether Perl would evaluate the SV as true or
1213 false, defined or undefined. Does not handle 'get' magic.
1215 =for apidoc Am|char*|SvPVutf8_force|SV* sv|STRLEN len
1216 Like C<SvPV_force>, but converts sv to utf8 first if necessary.
1218 =for apidoc Am|char*|SvPVutf8|SV* sv|STRLEN len
1219 Like C<SvPV>, but converts sv to utf8 first if necessary.
1221 =for apidoc Am|char*|SvPVutf8_nolen|SV* sv
1222 Like C<SvPV_nolen>, but converts sv to utf8 first if necessary.
1224 =for apidoc Am|char*|SvPVbyte_force|SV* sv|STRLEN len
1225 Like C<SvPV_force>, but converts sv to byte representation first if necessary.
1227 =for apidoc Am|char*|SvPVbyte|SV* sv|STRLEN len
1228 Like C<SvPV>, but converts sv to byte representation first if necessary.
1230 =for apidoc Am|char*|SvPVbyte_nolen|SV* sv
1231 Like C<SvPV_nolen>, but converts sv to byte representation first if necessary.
1233 =for apidoc Am|char*|SvPVutf8x_force|SV* sv|STRLEN len
1234 Like C<SvPV_force>, but converts sv to utf8 first if necessary.
1235 Guarantees to evaluate sv only once; use the more efficient C<SvPVutf8_force>
1238 =for apidoc Am|char*|SvPVutf8x|SV* sv|STRLEN len
1239 Like C<SvPV>, but converts sv to utf8 first if necessary.
1240 Guarantees to evaluate sv only once; use the more efficient C<SvPVutf8>
1243 =for apidoc Am|char*|SvPVbytex_force|SV* sv|STRLEN len
1244 Like C<SvPV_force>, but converts sv to byte representation first if necessary.
1245 Guarantees to evaluate sv only once; use the more efficient C<SvPVbyte_force>
1248 =for apidoc Am|char*|SvPVbytex|SV* sv|STRLEN len
1249 Like C<SvPV>, but converts sv to byte representation first if necessary.
1250 Guarantees to evaluate sv only once; use the more efficient C<SvPVbyte>
1253 =for apidoc Am|bool|SvIsCOW|SV* sv
1254 Returns a boolean indicating whether the SV is Copy-On-Write. (either shared
1255 hash key scalars, or full Copy On Write scalars if 5.9.0 is configured for
1258 =for apidoc Am|bool|SvIsCOW_shared_hash|SV* sv
1259 Returns a boolean indicating whether the SV is Copy-On-Write shared hash key
1262 =for apidoc Am|void|sv_catpvn_nomg|SV* sv|const char* ptr|STRLEN len
1263 Like C<sv_catpvn> but doesn't process magic.
1265 =for apidoc Am|void|sv_setsv_nomg|SV* dsv|SV* ssv
1266 Like C<sv_setsv> but doesn't process magic.
1268 =for apidoc Am|void|sv_catsv_nomg|SV* dsv|SV* ssv
1269 Like C<sv_catsv> but doesn't process magic.
1274 /* Let us hope that bitmaps for UV and IV are the same */
1275 #define SvIV(sv) (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv))
1276 #define SvUV(sv) (SvIOK(sv) ? SvUVX(sv) : sv_2uv(sv))
1277 #define SvNV(sv) (SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv))
1279 #define SvIV_nomg(sv) (SvIOK(sv) ? SvIVX(sv) : sv_2iv_flags(sv, 0))
1280 #define SvUV_nomg(sv) (SvIOK(sv) ? SvUVX(sv) : sv_2uv_flags(sv, 0))
1284 #define SvPV(sv, lp) SvPV_flags(sv, lp, SV_GMAGIC)
1285 #define SvPV_const(sv, lp) SvPV_flags_const(sv, lp, SV_GMAGIC)
1286 #define SvPV_mutable(sv, lp) SvPV_flags_mutable(sv, lp, SV_GMAGIC)
1288 #define SvPV_flags(sv, lp, flags) \
1289 ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \
1290 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pv_flags(sv, &lp, flags))
1291 #define SvPV_flags_const(sv, lp, flags) \
1292 ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \
1293 ? ((lp = SvCUR(sv)), SvPVX_const(sv)) : \
1294 (const char*) sv_2pv_flags(sv, &lp, flags|SV_CONST_RETURN))
1295 #define SvPV_flags_const_nolen(sv, flags) \
1296 ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \
1297 ? SvPVX_const(sv) : \
1298 (const char*) sv_2pv_flags(sv, 0, flags|SV_CONST_RETURN))
1299 #define SvPV_flags_mutable(sv, lp, flags) \
1300 ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \
1301 ? ((lp = SvCUR(sv)), SvPVX_mutable(sv)) : \
1302 sv_2pv_flags(sv, &lp, flags|SV_MUTABLE_RETURN))
1304 #define SvPV_force(sv, lp) SvPV_force_flags(sv, lp, SV_GMAGIC)
1305 #define SvPV_force_nolen(sv) SvPV_force_flags_nolen(sv, SV_GMAGIC)
1306 #define SvPV_force_mutable(sv, lp) SvPV_force_flags_mutable(sv, lp, SV_GMAGIC)
1308 #define SvPV_force_nomg(sv, lp) SvPV_force_flags(sv, lp, 0)
1309 #define SvPV_force_nomg_nolen(sv) SvPV_force_flags_nolen(sv, 0)
1311 #define SvPV_force_flags(sv, lp, flags) \
1312 ((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST)) == SVf_POK \
1313 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvn_force_flags(sv, &lp, flags))
1314 #define SvPV_force_flags_nolen(sv, flags) \
1315 ((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST)) == SVf_POK \
1316 ? SvPVX(sv) : sv_pvn_force_flags(sv, 0, flags))
1317 #define SvPV_force_flags_mutable(sv, lp, flags) \
1318 ((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST)) == SVf_POK \
1319 ? ((lp = SvCUR(sv)), SvPVX_mutable(sv)) \
1320 : sv_pvn_force_flags(sv, &lp, flags|SV_MUTABLE_RETURN))
1322 #define SvPV_nolen(sv) \
1323 ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \
1324 ? SvPVX(sv) : sv_2pv_flags(sv, 0, SV_GMAGIC))
1326 #define SvPV_nolen_const(sv) \
1327 ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \
1328 ? SvPVX_const(sv) : sv_2pv_flags(sv, 0, SV_GMAGIC|SV_CONST_RETURN))
1330 #define SvPV_nomg(sv, lp) SvPV_flags(sv, lp, 0)
1331 #define SvPV_nomg_const(sv, lp) SvPV_flags_const(sv, lp, 0)
1332 #define SvPV_nomg_const_nolen(sv) SvPV_flags_const_nolen(sv, 0)
1336 #define SvPVutf8(sv, lp) \
1337 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK|SVf_UTF8) \
1338 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pvutf8(sv, &lp))
1340 #define SvPVutf8_force(sv, lp) \
1341 ((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST)) == (SVf_POK|SVf_UTF8) \
1342 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvutf8n_force(sv, &lp))
1345 #define SvPVutf8_nolen(sv) \
1346 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK|SVf_UTF8)\
1347 ? SvPVX(sv) : sv_2pvutf8(sv, 0))
1351 #define SvPVbyte(sv, lp) \
1352 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK) \
1353 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pvbyte(sv, &lp))
1355 #define SvPVbyte_force(sv, lp) \
1356 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVf_THINKFIRST)) == (SVf_POK) \
1357 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvbyten_force(sv, &lp))
1359 #define SvPVbyte_nolen(sv) \
1360 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK)\
1361 ? SvPVX(sv) : sv_2pvbyte(sv, 0))
1365 /* define FOOx(): idempotent versions of FOO(). If possible, use a local
1366 * var to evaluate the arg once; failing that, use a global if possible;
1367 * failing that, call a function to do the work
1370 #define SvPVx_force(sv, lp) sv_pvn_force(sv, &lp)
1371 #define SvPVutf8x_force(sv, lp) sv_pvutf8n_force(sv, &lp)
1372 #define SvPVbytex_force(sv, lp) sv_pvbyten_force(sv, &lp)
1374 #if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
1376 # define SvIVx(sv) ({SV *_sv = (SV*)(sv); SvIV(_sv); })
1377 # define SvUVx(sv) ({SV *_sv = (SV*)(sv); SvUV(_sv); })
1378 # define SvNVx(sv) ({SV *_sv = (SV*)(sv); SvNV(_sv); })
1379 # define SvPVx(sv, lp) ({SV *_sv = (sv); SvPV(_sv, lp); })
1380 # define SvPVx_const(sv, lp) ({SV *_sv = (sv); SvPV_const(_sv, lp); })
1381 # define SvPVx_nolen(sv) ({SV *_sv = (sv); SvPV_nolen(_sv); })
1382 # define SvPVx_nolen_const(sv) ({SV *_sv = (sv); SvPV_nolen_const(_sv); })
1383 # define SvPVutf8x(sv, lp) ({SV *_sv = (sv); SvPVutf8(_sv, lp); })
1384 # define SvPVbytex(sv, lp) ({SV *_sv = (sv); SvPVbyte(_sv, lp); })
1385 # define SvPVbytex_nolen(sv) ({SV *_sv = (sv); SvPVbyte_nolen(_sv); })
1386 # define SvTRUE(sv) ( \
1390 ? (({XPV *nxpv = (XPV*)SvANY(sv); \
1392 (nxpv->xpv_cur > 1 || \
1393 (nxpv->xpv_cur && *(sv)->sv_u.svu_pv != '0')); }) \
1400 ? SvNVX(sv) != 0.0 \
1402 # define SvTRUEx(sv) ({SV *_sv = (sv); SvTRUE(_sv); })
1404 #else /* __GNUC__ */
1406 /* These inlined macros use globals, which will require a thread
1407 * declaration in user code, so we avoid them under threads */
1409 # define SvIVx(sv) ((PL_Sv = (sv)), SvIV(PL_Sv))
1410 # define SvUVx(sv) ((PL_Sv = (sv)), SvUV(PL_Sv))
1411 # define SvNVx(sv) ((PL_Sv = (sv)), SvNV(PL_Sv))
1412 # define SvPVx(sv, lp) ((PL_Sv = (sv)), SvPV(PL_Sv, lp))
1413 # define SvPVx_const(sv, lp) ((PL_Sv = (sv)), SvPV_const(PL_Sv, lp))
1414 # define SvPVx_nolen(sv) ((PL_Sv = (sv)), SvPV_nolen(PL_Sv))
1415 # define SvPVx_nolen_const(sv) ((PL_Sv = (sv)), SvPV_nolen_const(PL_Sv))
1416 # define SvPVutf8x(sv, lp) ((PL_Sv = (sv)), SvPVutf8(PL_Sv, lp))
1417 # define SvPVbytex(sv, lp) ((PL_Sv = (sv)), SvPVbyte(PL_Sv, lp))
1418 # define SvPVbytex_nolen(sv) ((PL_Sv = (sv)), SvPVbyte_nolen(PL_Sv))
1419 # define SvTRUE(sv) ( \
1423 ? ((PL_Xpv = (XPV*)SvANY(PL_Sv = (sv))) && \
1424 (PL_Xpv->xpv_cur > 1 || \
1425 (PL_Xpv->xpv_cur && *PL_Sv->sv_u.svu_pv != '0')) \
1432 ? SvNVX(sv) != 0.0 \
1434 # define SvTRUEx(sv) ((PL_Sv = (sv)), SvTRUE(PL_Sv))
1435 #endif /* __GNU__ */
1437 #define SvIsCOW(sv) ((SvFLAGS(sv) & (SVf_FAKE | SVf_READONLY)) == \
1438 (SVf_FAKE | SVf_READONLY))
1439 #define SvIsCOW_shared_hash(sv) (SvIsCOW(sv) && SvLEN(sv) == 0)
1441 #define SvSHARED_HEK_FROM_PV(pvx) \
1442 ((struct hek*)(pvx - STRUCT_OFFSET(struct hek, hek_key)))
1443 #define SvSHARED_HASH(sv) (0 + SvSHARED_HEK_FROM_PV(SvPVX_const(sv))->hek_hash)
1445 /* flag values for sv_*_flags functions */
1446 #define SV_IMMEDIATE_UNREF 1
1448 #define SV_COW_DROP_PV 4
1449 #define SV_UTF8_NO_ENCODING 8
1450 #define SV_NOSTEAL 16
1451 #define SV_CONST_RETURN 32
1452 #define SV_MUTABLE_RETURN 64
1453 #define SV_SMAGIC 128
1455 #define sv_unref(sv) sv_unref_flags(sv, 0)
1456 #define sv_force_normal(sv) sv_force_normal_flags(sv, 0)
1458 /* We are about to replace the SV's current value. So if it's copy on write
1459 we need to normalise it. Use the SV_COW_DROP_PV flag hint to say that
1460 the value is about to get thrown away, so drop the PV rather than go to
1461 the effort of making a read-write copy only for it to get immediately
1464 #define SV_CHECK_THINKFIRST_COW_DROP(sv) if (SvTHINKFIRST(sv)) \
1465 sv_force_normal_flags(sv, SV_COW_DROP_PV)
1467 #ifdef PERL_OLD_COPY_ON_WRITE
1468 # define SvRELEASE_IVX(sv) ((void)((SvFLAGS(sv) & (SVf_OOK|SVf_READONLY|SVf_FAKE)) \
1469 && Perl_sv_release_IVX(aTHX_ sv)))
1470 # define SvIsCOW_normal(sv) (SvIsCOW(sv) && SvLEN(sv))
1472 # define SvRELEASE_IVX(sv) SvOOK_off(sv)
1473 #endif /* PERL_OLD_COPY_ON_WRITE */
1475 #define CAN_COW_MASK (SVs_OBJECT|SVs_GMG|SVs_SMG|SVs_RMG|SVf_IOK|SVf_NOK| \
1476 SVf_POK|SVf_ROK|SVp_IOK|SVp_NOK|SVp_POK|SVf_FAKE| \
1477 SVf_OOK|SVf_BREAK|SVf_READONLY|SVf_AMAGIC)
1478 #define CAN_COW_FLAGS (SVp_POK|SVf_POK)
1480 #define SV_CHECK_THINKFIRST(sv) if (SvTHINKFIRST(sv)) \
1481 sv_force_normal_flags(sv, 0)
1484 /* all these 'functions' are now just macros */
1486 #define sv_pv(sv) SvPV_nolen(sv)
1487 #define sv_pvutf8(sv) SvPVutf8_nolen(sv)
1488 #define sv_pvbyte(sv) SvPVbyte_nolen(sv)
1490 #define sv_pvn_force_nomg(sv, lp) sv_pvn_force_flags(sv, lp, 0)
1491 #define sv_utf8_upgrade_nomg(sv) sv_utf8_upgrade_flags(sv, 0)
1492 #define sv_catpvn_nomg(dsv, sstr, slen) sv_catpvn_flags(dsv, sstr, slen, 0)
1493 #define sv_setsv(dsv, ssv) sv_setsv_flags(dsv, ssv, SV_GMAGIC)
1494 #define sv_setsv_nomg(dsv, ssv) sv_setsv_flags(dsv, ssv, 0)
1495 #define sv_catsv(dsv, ssv) sv_catsv_flags(dsv, ssv, SV_GMAGIC)
1496 #define sv_catsv_nomg(dsv, ssv) sv_catsv_flags(dsv, ssv, 0)
1497 #define sv_catsv_mg(dsv, ssv) sv_catsv_flags(dsv, ssv, SV_GMAGIC|SV_SMAGIC)
1498 #define sv_catpvn(dsv, sstr, slen) sv_catpvn_flags(dsv, sstr, slen, SV_GMAGIC)
1499 #define sv_catpvn_mg(sv, sstr, slen) \
1500 sv_catpvn_flags(sv, sstr, slen, SV_GMAGIC|SV_SMAGIC);
1501 #define sv_2pv(sv, lp) sv_2pv_flags(sv, lp, SV_GMAGIC)
1502 #define sv_2pv_nolen(sv) sv_2pv(sv, 0)
1503 #define sv_2pvbyte_nolen(sv) sv_2pvbyte(sv, 0)
1504 #define sv_2pvutf8_nolen(sv) sv_2pvutf8(sv, 0)
1505 #define sv_2pv_nomg(sv, lp) sv_2pv_flags(sv, lp, 0)
1506 #define sv_pvn_force(sv, lp) sv_pvn_force_flags(sv, lp, SV_GMAGIC)
1507 #define sv_utf8_upgrade(sv) sv_utf8_upgrade_flags(sv, SV_GMAGIC)
1508 #define sv_2iv(sv) sv_2iv_flags(sv, SV_GMAGIC)
1509 #define sv_2uv(sv) sv_2uv_flags(sv, SV_GMAGIC)
1511 /* Should be named SvCatPVN_utf8_upgrade? */
1512 #define sv_catpvn_utf8_upgrade(dsv, sstr, slen, nsv) \
1515 nsv = sv_2mortal(newSVpvn(sstr, slen)); \
1517 sv_setpvn(nsv, sstr, slen); \
1519 sv_utf8_upgrade(nsv); \
1520 sv_catsv(dsv, nsv); \
1524 =for apidoc Am|SV*|newRV_inc|SV* sv
1526 Creates an RV wrapper for an SV. The reference count for the original SV is
1532 #define newRV_inc(sv) newRV(sv)
1534 /* the following macros update any magic values this sv is associated with */
1537 =head1 Magical Functions
1539 =for apidoc Am|void|SvGETMAGIC|SV* sv
1540 Invokes C<mg_get> on an SV if it has 'get' magic. This macro evaluates its
1541 argument more than once.
1543 =for apidoc Am|void|SvSETMAGIC|SV* sv
1544 Invokes C<mg_set> on an SV if it has 'set' magic. This macro evaluates its
1545 argument more than once.
1547 =for apidoc Am|void|SvSetSV|SV* dsb|SV* ssv
1548 Calls C<sv_setsv> if dsv is not the same as ssv. May evaluate arguments
1551 =for apidoc Am|void|SvSetSV_nosteal|SV* dsv|SV* ssv
1552 Calls a non-destructive version of C<sv_setsv> if dsv is not the same as
1553 ssv. May evaluate arguments more than once.
1555 =for apidoc Am|void|SvSetMagicSV|SV* dsb|SV* ssv
1556 Like C<SvSetSV>, but does any set magic required afterwards.
1558 =for apidoc Am|void|SvSetMagicSV_nosteal|SV* dsv|SV* ssv
1559 Like C<SvSetSV_nosteal>, but does any set magic required afterwards.
1561 =for apidoc Am|void|SvSHARE|SV* sv
1562 Arranges for sv to be shared between threads if a suitable module
1565 =for apidoc Am|void|SvLOCK|SV* sv
1566 Arranges for a mutual exclusion lock to be obtained on sv if a suitable module
1569 =for apidoc Am|void|SvUNLOCK|SV* sv
1570 Releases a mutual exclusion lock on sv if a suitable module
1573 =head1 SV Manipulation Functions
1575 =for apidoc Am|char *|SvGROW|SV* sv|STRLEN len
1576 Expands the character buffer in the SV so that it has room for the
1577 indicated number of bytes (remember to reserve space for an extra trailing
1578 NUL character). Calls C<sv_grow> to perform the expansion if necessary.
1579 Returns a pointer to the character buffer.
1584 #define SvSHARE(sv) CALL_FPTR(PL_sharehook)(aTHX_ sv)
1585 #define SvLOCK(sv) CALL_FPTR(PL_lockhook)(aTHX_ sv)
1586 #define SvUNLOCK(sv) CALL_FPTR(PL_unlockhook)(aTHX_ sv)
1588 #define SvGETMAGIC(x) STMT_START { if (SvGMAGICAL(x)) mg_get(x); } STMT_END
1589 #define SvSETMAGIC(x) STMT_START { if (SvSMAGICAL(x)) mg_set(x); } STMT_END
1591 #define SvSetSV_and(dst,src,finally) \
1593 if ((dst) != (src)) { \
1594 sv_setsv(dst, src); \
1598 #define SvSetSV_nosteal_and(dst,src,finally) \
1600 if ((dst) != (src)) { \
1601 sv_setsv_flags(dst, src, SV_GMAGIC | SV_NOSTEAL); \
1606 #define SvSetSV(dst,src) \
1607 SvSetSV_and(dst,src,/*nothing*/;)
1608 #define SvSetSV_nosteal(dst,src) \
1609 SvSetSV_nosteal_and(dst,src,/*nothing*/;)
1611 #define SvSetMagicSV(dst,src) \
1612 SvSetSV_and(dst,src,SvSETMAGIC(dst))
1613 #define SvSetMagicSV_nosteal(dst,src) \
1614 SvSetSV_nosteal_and(dst,src,SvSETMAGIC(dst))
1617 #if !defined(SKIP_DEBUGGING)
1618 #define SvPEEK(sv) sv_peek(sv)
1620 #define SvPEEK(sv) ""
1623 #define SvIMMORTAL(sv) ((sv)==&PL_sv_undef || (sv)==&PL_sv_yes || (sv)==&PL_sv_no || (sv)==&PL_sv_placeholder)
1625 #define boolSV(b) ((b) ? &PL_sv_yes : &PL_sv_no)
1627 #define isGV(sv) (SvTYPE(sv) == SVt_PVGV)
1629 #define SvGROW(sv,len) (SvLEN(sv) < (len) ? sv_grow(sv,len) : SvPVX(sv))
1630 #define SvGROW_mutable(sv,len) \
1631 (SvLEN(sv) < (len) ? sv_grow(sv,len) : SvPVX_mutable(sv))
1632 #define Sv_Grow sv_grow
1634 #define CLONEf_COPY_STACKS 1
1635 #define CLONEf_KEEP_PTR_TABLE 2
1636 #define CLONEf_CLONE_HOST 4
1637 #define CLONEf_JOIN_IN 8
1639 struct clone_params {
1642 PerlInterpreter *proto_perl;
1647 * c-indentation-style: bsd
1649 * indent-tabs-mode: t
1652 * ex: set ts=8 sts=4 sw=4 noet: