3 * Copyright (c) 1991-2000, Larry Wall
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.
11 #undef sv_flags /* Convex has this in <signal.h> for sigvec() */
15 =for apidoc AmU||svtype
16 An enum of flags for Perl types. These are found in the file B<sv.h>
17 in the C<svtype> enum. Test these flags with the C<SvTYPE> macro.
19 =for apidoc AmU||SVt_PV
20 Pointer type flag for scalars. See C<svtype>.
22 =for apidoc AmU||SVt_IV
23 Integer type flag for scalars. See C<svtype>.
25 =for apidoc AmU||SVt_NV
26 Double type flag for scalars. See C<svtype>.
28 =for apidoc AmU||SVt_PVMG
29 Type flag for blessed scalars. See C<svtype>.
31 =for apidoc AmU||SVt_PVAV
32 Type flag for arrays. See C<svtype>.
34 =for apidoc AmU||SVt_PVHV
35 Type flag for hashes. See C<svtype>.
37 =for apidoc AmU||SVt_PVCV
38 Type flag for code refs. See C<svtype>.
62 /* Using C's structural equivalence to help emulate C++ inheritance here... */
65 void* sv_any; /* pointer to something */
66 U32 sv_refcnt; /* how many references to us */
67 U32 sv_flags; /* what we are */
71 XPVGV* sv_any; /* pointer to something */
72 U32 sv_refcnt; /* how many references to us */
73 U32 sv_flags; /* what we are */
77 XPVCV* sv_any; /* pointer to something */
78 U32 sv_refcnt; /* how many references to us */
79 U32 sv_flags; /* what we are */
83 XPVAV* sv_any; /* pointer to something */
84 U32 sv_refcnt; /* how many references to us */
85 U32 sv_flags; /* what we are */
89 XPVHV* sv_any; /* pointer to something */
90 U32 sv_refcnt; /* how many references to us */
91 U32 sv_flags; /* what we are */
95 XPVIO* sv_any; /* pointer to something */
96 U32 sv_refcnt; /* how many references to us */
97 U32 sv_flags; /* what we are */
101 =for apidoc Am|U32|SvREFCNT|SV* sv
102 Returns the value of the object's reference count.
104 =for apidoc Am|SV*|SvREFCNT_inc|SV* sv
105 Increments the reference count of the given SV.
107 =for apidoc Am|void|SvREFCNT_dec|SV* sv
108 Decrements the reference count of the given SV.
110 =for apidoc Am|svtype|SvTYPE|SV* sv
111 Returns the type of the SV. See C<svtype>.
113 =for apidoc Am|void|SvUPGRADE|SV* sv|svtype type
114 Used to upgrade an SV to a more complex form. Uses C<sv_upgrade> to
115 perform the upgrade if necessary. See C<svtype>.
120 #define SvANY(sv) (sv)->sv_any
121 #define SvFLAGS(sv) (sv)->sv_flags
122 #define SvREFCNT(sv) (sv)->sv_refcnt
127 # define ATOMIC_INC(count) __ATOMIC_INCREMENT_LONG(&count)
128 # define ATOMIC_DEC_AND_TEST(res,count) res=(1==__ATOMIC_DECREMENT_LONG(&count))
130 # ifdef EMULATE_ATOMIC_REFCOUNTS
131 # define ATOMIC_INC(count) STMT_START { \
132 MUTEX_LOCK(&PL_svref_mutex); \
134 MUTEX_UNLOCK(&PL_svref_mutex); \
136 # define ATOMIC_DEC_AND_TEST(res,count) STMT_START { \
137 MUTEX_LOCK(&PL_svref_mutex); \
138 res = (--count == 0); \
139 MUTEX_UNLOCK(&PL_svref_mutex); \
142 # define ATOMIC_INC(count) atomic_inc(&count)
143 # define ATOMIC_DEC_AND_TEST(res,count) (res = atomic_dec_and_test(&count))
144 # endif /* EMULATE_ATOMIC_REFCOUNTS */
147 # define ATOMIC_INC(count) (++count)
148 # define ATOMIC_DEC_AND_TEST(res, count) (res = (--count == 0))
149 #endif /* USE_THREADS */
152 # define SvREFCNT_inc(sv) \
154 SV *nsv = (SV*)(sv); \
156 ATOMIC_INC(SvREFCNT(nsv)); \
160 # if defined(CRIPPLED_CC) || defined(USE_THREADS)
161 # if defined(VMS) && defined(__ALPHA)
162 # define SvREFCNT_inc(sv) \
163 (PL_Sv=(SV*)(sv), (PL_Sv && __ATOMIC_INCREMENT_LONG(&(SvREFCNT(PL_Sv)))), (SV *)PL_Sv)
165 # define SvREFCNT_inc(sv) sv_newref((SV*)sv)
168 # define SvREFCNT_inc(sv) \
169 ((PL_Sv=(SV*)(sv)), (PL_Sv && ATOMIC_INC(SvREFCNT(PL_Sv))), (SV*)PL_Sv)
173 #define SvREFCNT_dec(sv) sv_free((SV*)sv)
175 #define SVTYPEMASK 0xff
176 #define SvTYPE(sv) ((sv)->sv_flags & SVTYPEMASK)
178 #define SvUPGRADE(sv, mt) (SvTYPE(sv) >= mt || sv_upgrade(sv, mt))
180 #define SVs_PADBUSY 0x00000100 /* reserved for tmp or my already */
181 #define SVs_PADTMP 0x00000200 /* in use as tmp */
182 #define SVs_PADMY 0x00000400 /* in use a "my" variable */
183 #define SVs_TEMP 0x00000800 /* string is stealable? */
184 #define SVs_OBJECT 0x00001000 /* is "blessed" */
185 #define SVs_GMG 0x00002000 /* has magical get method */
186 #define SVs_SMG 0x00004000 /* has magical set method */
187 #define SVs_RMG 0x00008000 /* has random magical methods */
189 #define SVf_IOK 0x00010000 /* has valid public integer value */
190 #define SVf_NOK 0x00020000 /* has valid public numeric value */
191 #define SVf_POK 0x00040000 /* has valid public pointer value */
192 #define SVf_ROK 0x00080000 /* has a valid reference pointer */
194 #define SVf_FAKE 0x00100000 /* glob or lexical is just a copy */
195 #define SVf_OOK 0x00200000 /* has valid offset value */
196 #define SVf_BREAK 0x00400000 /* refcnt is artificially low */
197 #define SVf_READONLY 0x00800000 /* may not be modified */
200 #define SVp_IOK 0x01000000 /* has valid non-public integer value */
201 #define SVp_NOK 0x02000000 /* has valid non-public numeric value */
202 #define SVp_POK 0x04000000 /* has valid non-public pointer value */
203 #define SVp_SCREAM 0x08000000 /* has been studied? */
206 #define SVf_UTF8 0x00000000 /* SvPVX is not UTF-8 encoded */
208 #define SVf_UTF8 0x20000000 /* SvPVX is UTF-8 encoded */
211 #define SVf_THINKFIRST (SVf_READONLY|SVf_ROK|SVf_FAKE|SVf_UTF8)
213 #define SVf_OK (SVf_IOK|SVf_NOK|SVf_POK|SVf_ROK| \
214 SVp_IOK|SVp_NOK|SVp_POK)
216 #define SVf_AMAGIC 0x10000000 /* has magical overloaded methods */
220 /* Some private flags. */
222 /* SVpad_OUR may be set on SVt_PV{NV,MG,GV} types */
223 #define SVpad_OUR 0x80000000 /* pad name is "our" instead of "my" */
225 #define SVf_IVisUV 0x80000000 /* use XPVUV instead of XPVIV */
227 #define SVpfm_COMPILED 0x80000000 /* FORMLINE is compiled */
229 #define SVpbm_VALID 0x80000000
230 #define SVpbm_TAIL 0x40000000
232 #define SVrepl_EVAL 0x40000000 /* Replacement part of s///e */
234 #define SVphv_SHAREKEYS 0x20000000 /* keys live on shared string table */
235 #define SVphv_LAZYDEL 0x40000000 /* entry in xhv_eiter must be deleted */
237 #define SVprv_WEAKREF 0x80000000 /* Weak reference */
240 SV * xrv_rv; /* pointer to another SV */
244 char * xpv_pv; /* pointer to malloced string */
245 STRLEN xpv_cur; /* length of xpv_pv as a C string */
246 STRLEN xpv_len; /* allocated size */
250 char * xpv_pv; /* pointer to malloced string */
251 STRLEN xpv_cur; /* length of xpv_pv as a C string */
252 STRLEN xpv_len; /* allocated size */
253 IV xiv_iv; /* integer value or pv offset */
257 char * xpv_pv; /* pointer to malloced string */
258 STRLEN xpv_cur; /* length of xpv_pv as a C string */
259 STRLEN xpv_len; /* allocated size */
260 UV xuv_uv; /* unsigned value or pv offset */
264 char * xpv_pv; /* pointer to malloced string */
265 STRLEN xpv_cur; /* length of xpv_pv as a C string */
266 STRLEN xpv_len; /* allocated size */
267 IV xiv_iv; /* integer value or pv offset */
268 NV xnv_nv; /* numeric value, if any */
271 /* These structure must match the beginning of struct xpvhv in hv.h. */
273 char * xpv_pv; /* pointer to malloced string */
274 STRLEN xpv_cur; /* length of xpv_pv as a C string */
275 STRLEN xpv_len; /* allocated size */
276 IV xiv_iv; /* integer value or pv offset */
277 NV xnv_nv; /* numeric value, if any */
278 MAGIC* xmg_magic; /* linked list of magicalness */
279 HV* xmg_stash; /* class package */
283 char * xpv_pv; /* pointer to malloced string */
284 STRLEN xpv_cur; /* length of xpv_pv as a C string */
285 STRLEN xpv_len; /* allocated size */
286 IV xiv_iv; /* integer value or pv offset */
287 NV xnv_nv; /* numeric value, if any */
288 MAGIC* xmg_magic; /* linked list of magicalness */
289 HV* xmg_stash; /* class package */
298 char * xpv_pv; /* pointer to malloced string */
299 STRLEN xpv_cur; /* length of xpv_pv as a C string */
300 STRLEN xpv_len; /* allocated size */
301 IV xiv_iv; /* integer value or pv offset */
302 NV xnv_nv; /* numeric value, if any */
303 MAGIC* xmg_magic; /* linked list of magicalness */
304 HV* xmg_stash; /* class package */
314 char * xpv_pv; /* pointer to malloced string */
315 STRLEN xpv_cur; /* length of xpv_pv as a C string */
316 STRLEN xpv_len; /* allocated size */
317 IV xiv_iv; /* integer value or pv offset */
318 NV xnv_nv; /* numeric value, if any */
319 MAGIC* xmg_magic; /* linked list of magicalness */
320 HV* xmg_stash; /* class package */
322 I32 xbm_useful; /* is this constant pattern being useful? */
323 U16 xbm_previous; /* how many characters in string before rare? */
324 U8 xbm_rare; /* rarest character in string */
327 /* This structure much match XPVCV in cv.h */
329 typedef U16 cv_flags_t;
332 char * xpv_pv; /* pointer to malloced string */
333 STRLEN xpv_cur; /* length of xpv_pv as a C string */
334 STRLEN xpv_len; /* allocated size */
335 IV xiv_iv; /* integer value or pv offset */
336 NV xnv_nv; /* numeric value, if any */
337 MAGIC* xmg_magic; /* linked list of magicalness */
338 HV* xmg_stash; /* class package */
343 void (*xcv_xsub)(pTHXo_ CV*);
347 long xcv_depth; /* >= 2 indicates recursive call */
351 perl_mutex *xcv_mutexp; /* protects xcv_owner */
352 struct perl_thread *xcv_owner; /* current owner thread */
353 #endif /* USE_THREADS */
354 cv_flags_t xcv_flags;
360 char * xpv_pv; /* pointer to malloced string */
361 STRLEN xpv_cur; /* length of xpv_pv as a C string */
362 STRLEN xpv_len; /* allocated size */
363 IV xiv_iv; /* integer value or pv offset */
364 NV xnv_nv; /* numeric value, if any */
365 MAGIC* xmg_magic; /* linked list of magicalness */
366 HV* xmg_stash; /* class package */
368 PerlIO * xio_ifp; /* ifp and ofp are normally the same */
369 PerlIO * xio_ofp; /* but sockets need separate streams */
370 /* Cray addresses everything by word boundaries (64 bits) and
371 * code and data pointers cannot be mixed (which is exactly what
372 * Perl_filter_add() tries to do with the dirp), hence the following
373 * union trick (as suggested by Gurusamy Sarathy).
374 * For further information see Geir Johansen's problem report titled
375 [ID 20000612.002] Perl problem on Cray system
376 * The any pointer (known as IoANY()) will also be a good place
377 * to hang any IO disciplines to.
380 DIR * xiou_dirp; /* for opendir, readdir, etc */
381 void * xiou_any; /* for alignment */
383 long xio_lines; /* $. */
384 long xio_page; /* $% */
385 long xio_page_len; /* $= */
386 long xio_lines_left; /* $- */
387 char * xio_top_name; /* $^ */
388 GV * xio_top_gv; /* $^ */
389 char * xio_fmt_name; /* $~ */
390 GV * xio_fmt_gv; /* $~ */
391 char * xio_bottom_name;/* $^B */
392 GV * xio_bottom_gv; /* $^B */
393 short xio_subprocess; /* -| or |- */
397 #define xio_dirp xio_dirpu.xiou_dirp
398 #define xio_any xio_dirpu.xiou_any
400 #define IOf_ARGV 1 /* this fp iterates over ARGV */
401 #define IOf_START 2 /* check for null ARGV and substitute '-' */
402 #define IOf_FLUSH 4 /* this fp wants a flush after write op */
403 #define IOf_DIDTOP 8 /* just did top of form */
404 #define IOf_UNTAINT 16 /* consider this fp (and its data) "safe" */
405 #define IOf_NOLINE 32 /* slurped a pseudo-line from empty file */
406 #define IOf_FAKE_DIRP 64 /* xio_dirp is fake (source filters kludge) */
408 /* The following macros define implementation-independent predicates on SVs. */
411 =for apidoc Am|bool|SvNIOK|SV* sv
412 Returns a boolean indicating whether the SV contains a number, integer or
415 =for apidoc Am|bool|SvNIOKp|SV* sv
416 Returns a boolean indicating whether the SV contains a number, integer or
417 double. Checks the B<private> setting. Use C<SvNIOK>.
419 =for apidoc Am|void|SvNIOK_off|SV* sv
420 Unsets the NV/IV status of an SV.
422 =for apidoc Am|bool|SvOK|SV* sv
423 Returns a boolean indicating whether the value is an SV.
425 =for apidoc Am|bool|SvIOKp|SV* sv
426 Returns a boolean indicating whether the SV contains an integer. Checks
427 the B<private> setting. Use C<SvIOK>.
429 =for apidoc Am|bool|SvNOKp|SV* sv
430 Returns a boolean indicating whether the SV contains a double. Checks the
431 B<private> setting. Use C<SvNOK>.
433 =for apidoc Am|bool|SvPOKp|SV* sv
434 Returns a boolean indicating whether the SV contains a character string.
435 Checks the B<private> setting. Use C<SvPOK>.
437 =for apidoc Am|bool|SvIOK|SV* sv
438 Returns a boolean indicating whether the SV contains an integer.
440 =for apidoc Am|void|SvIOK_on|SV* sv
441 Tells an SV that it is an integer.
443 =for apidoc Am|void|SvIOK_off|SV* sv
444 Unsets the IV status of an SV.
446 =for apidoc Am|void|SvIOK_only|SV* sv
447 Tells an SV that it is an integer and disables all other OK bits.
449 =for apidoc Am|void|SvIOK_only_UV|SV* sv
450 Tells and SV that it is an unsigned integer and disables all other OK bits.
452 =for apidoc Am|void|SvIOK_UV|SV* sv
453 Returns a boolean indicating whether the SV contains an unsigned integer.
455 =for apidoc Am|void|SvIOK_notUV|SV* sv
456 Returns a boolean indicating whether the SV contains an signed integer.
458 =for apidoc Am|bool|SvNOK|SV* sv
459 Returns a boolean indicating whether the SV contains a double.
461 =for apidoc Am|void|SvNOK_on|SV* sv
462 Tells an SV that it is a double.
464 =for apidoc Am|void|SvNOK_off|SV* sv
465 Unsets the NV status of an SV.
467 =for apidoc Am|void|SvNOK_only|SV* sv
468 Tells an SV that it is a double and disables all other OK bits.
470 =for apidoc Am|bool|SvPOK|SV* sv
471 Returns a boolean indicating whether the SV contains a character
474 =for apidoc Am|void|SvPOK_on|SV* sv
475 Tells an SV that it is a string.
477 =for apidoc Am|void|SvPOK_off|SV* sv
478 Unsets the PV status of an SV.
480 =for apidoc Am|void|SvPOK_only|SV* sv
481 Tells an SV that it is a string and disables all other OK bits.
483 =for apidoc Am|bool|SvOOK|SV* sv
484 Returns a boolean indicating whether the SvIVX is a valid offset value for
485 the SvPVX. This hack is used internally to speed up removal of characters
486 from the beginning of a SvPV. When SvOOK is true, then the start of the
487 allocated string buffer is really (SvPVX - SvIVX).
489 =for apidoc Am|bool|SvROK|SV* sv
490 Tests if the SV is an RV.
492 =for apidoc Am|void|SvROK_on|SV* sv
493 Tells an SV that it is an RV.
495 =for apidoc Am|void|SvROK_off|SV* sv
496 Unsets the RV status of an SV.
498 =for apidoc Am|SV*|SvRV|SV* sv
499 Dereferences an RV to return the SV.
501 =for apidoc Am|IV|SvIVX|SV* sv
502 Returns the integer which is stored in the SV, assuming SvIOK is
505 =for apidoc Am|UV|SvUVX|SV* sv
506 Returns the unsigned integer which is stored in the SV, assuming SvIOK is
509 =for apidoc Am|NV|SvNVX|SV* sv
510 Returns the double which is stored in the SV, assuming SvNOK is
513 =for apidoc Am|char*|SvPVX|SV* sv
514 Returns a pointer to the string in the SV. The SV must contain a
517 =for apidoc Am|STRLEN|SvCUR|SV* sv
518 Returns the length of the string which is in the SV. See C<SvLEN>.
520 =for apidoc Am|STRLEN|SvLEN|SV* sv
521 Returns the size of the string buffer in the SV, not including any part
522 attributable to C<SvOOK>. See C<SvCUR>.
524 =for apidoc Am|char*|SvEND|SV* sv
525 Returns a pointer to the last character in the string which is in the SV.
526 See C<SvCUR>. Access the character as *(SvEND(sv)).
528 =for apidoc Am|HV*|SvSTASH|SV* sv
529 Returns the stash of the SV.
531 =for apidoc Am|void|SvCUR_set|SV* sv|STRLEN len
532 Set the length of the string which is in the SV. See C<SvCUR>.
537 #define SvNIOK(sv) (SvFLAGS(sv) & (SVf_IOK|SVf_NOK))
538 #define SvNIOKp(sv) (SvFLAGS(sv) & (SVp_IOK|SVp_NOK))
539 #define SvNIOK_off(sv) (SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK| \
540 SVp_IOK|SVp_NOK|SVf_IVisUV))
542 #define SvOK(sv) (SvFLAGS(sv) & SVf_OK)
543 #define SvOK_off(sv) (SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \
544 SVf_IVisUV|SVf_UTF8), \
546 #define SvOK_off_exc_UV(sv) (SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \
550 #define SvOKp(sv) (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK))
551 #define SvIOKp(sv) (SvFLAGS(sv) & SVp_IOK)
552 #define SvIOKp_on(sv) ((void)SvOOK_off(sv), SvFLAGS(sv) |= SVp_IOK)
553 #define SvNOKp(sv) (SvFLAGS(sv) & SVp_NOK)
554 #define SvNOKp_on(sv) (SvFLAGS(sv) |= SVp_NOK)
555 #define SvPOKp(sv) (SvFLAGS(sv) & SVp_POK)
556 #define SvPOKp_on(sv) (SvFLAGS(sv) |= SVp_POK)
558 #define SvIOK(sv) (SvFLAGS(sv) & SVf_IOK)
559 #define SvIOK_on(sv) ((void)SvOOK_off(sv), \
560 SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
561 #define SvIOK_off(sv) (SvFLAGS(sv) &= ~(SVf_IOK|SVp_IOK|SVf_IVisUV))
562 #define SvIOK_only(sv) ((void)SvOK_off(sv), \
563 SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
564 #define SvIOK_only_UV(sv) ((void)SvOK_off_exc_UV(sv), \
565 SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
567 #define SvIOK_UV(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV)) \
568 == (SVf_IOK|SVf_IVisUV))
569 #define SvIOK_notUV(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV)) \
572 #define SvIsUV(sv) (SvFLAGS(sv) & SVf_IVisUV)
573 #define SvIsUV_on(sv) (SvFLAGS(sv) |= SVf_IVisUV)
574 #define SvIsUV_off(sv) (SvFLAGS(sv) &= ~SVf_IVisUV)
576 #define SvNOK(sv) (SvFLAGS(sv) & SVf_NOK)
577 #define SvNOK_on(sv) (SvFLAGS(sv) |= (SVf_NOK|SVp_NOK))
578 #define SvNOK_off(sv) (SvFLAGS(sv) &= ~(SVf_NOK|SVp_NOK))
579 #define SvNOK_only(sv) ((void)SvOK_off(sv), \
580 SvFLAGS(sv) |= (SVf_NOK|SVp_NOK))
583 =for apidoc Am|void|SvUTF8|SV* sv
584 Returns a boolean indicating whether the SV contains UTF-8 encoded data.
586 =for apidoc Am|void|SvUTF8_on|SV *sv
587 Tells an SV that it is a string and encoded in UTF8. Do not use frivolously.
589 =for apidoc Am|void|SvUTF8_off|SV *sv
590 Unsets the UTF8 status of an SV.
592 =for apidoc Am|void|SvPOK_only_UTF8|SV* sv
593 Tells an SV that it is a UTF8 string (do not use frivolously)
594 and disables all other OK bits.
599 #define SvUTF8(sv) (SvFLAGS(sv) & SVf_UTF8)
600 #define SvUTF8_on(sv) (SvFLAGS(sv) |= (SVf_UTF8))
601 #define SvUTF8_off(sv) (SvFLAGS(sv) &= ~(SVf_UTF8))
603 #define SvPOK(sv) (SvFLAGS(sv) & SVf_POK)
604 #define SvPOK_on(sv) (SvFLAGS(sv) |= (SVf_POK|SVp_POK))
605 #define SvPOK_off(sv) (SvFLAGS(sv) &= ~(SVf_POK|SVp_POK))
606 #define SvPOK_only(sv) (SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \
607 SVf_IVisUV|SVf_UTF8), \
608 SvFLAGS(sv) |= (SVf_POK|SVp_POK))
609 #define SvPOK_only_UTF8(sv) (SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \
611 SvFLAGS(sv) |= (SVf_POK|SVp_POK))
613 #define SvOOK(sv) (SvFLAGS(sv) & SVf_OOK)
614 #define SvOOK_on(sv) ((void)SvIOK_off(sv), SvFLAGS(sv) |= SVf_OOK)
615 #define SvOOK_off(sv) (SvOOK(sv) && sv_backoff(sv))
617 #define SvFAKE(sv) (SvFLAGS(sv) & SVf_FAKE)
618 #define SvFAKE_on(sv) (SvFLAGS(sv) |= SVf_FAKE)
619 #define SvFAKE_off(sv) (SvFLAGS(sv) &= ~SVf_FAKE)
621 #define SvROK(sv) (SvFLAGS(sv) & SVf_ROK)
622 #define SvROK_on(sv) (SvFLAGS(sv) |= SVf_ROK)
623 #define SvROK_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK|SVf_AMAGIC))
625 #define SvMAGICAL(sv) (SvFLAGS(sv) & (SVs_GMG|SVs_SMG|SVs_RMG))
626 #define SvMAGICAL_on(sv) (SvFLAGS(sv) |= (SVs_GMG|SVs_SMG|SVs_RMG))
627 #define SvMAGICAL_off(sv) (SvFLAGS(sv) &= ~(SVs_GMG|SVs_SMG|SVs_RMG))
629 #define SvGMAGICAL(sv) (SvFLAGS(sv) & SVs_GMG)
630 #define SvGMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_GMG)
631 #define SvGMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_GMG)
633 #define SvSMAGICAL(sv) (SvFLAGS(sv) & SVs_SMG)
634 #define SvSMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_SMG)
635 #define SvSMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_SMG)
637 #define SvRMAGICAL(sv) (SvFLAGS(sv) & SVs_RMG)
638 #define SvRMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_RMG)
639 #define SvRMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_RMG)
641 #define SvAMAGIC(sv) (SvFLAGS(sv) & SVf_AMAGIC)
642 #define SvAMAGIC_on(sv) (SvFLAGS(sv) |= SVf_AMAGIC)
643 #define SvAMAGIC_off(sv) (SvFLAGS(sv) &= ~SVf_AMAGIC)
645 #define SvGAMAGIC(sv) (SvFLAGS(sv) & (SVs_GMG|SVf_AMAGIC))
648 #define Gv_AMG(stash) \
649 (HV_AMAGICmb(stash) && \
650 ((!HV_AMAGICbad(stash) && HV_AMAGIC(stash)) || Gv_AMupdate(stash)))
652 #define Gv_AMG(stash) (PL_amagic_generation && Gv_AMupdate(stash))
654 #define SvWEAKREF(sv) ((SvFLAGS(sv) & (SVf_ROK|SVprv_WEAKREF)) \
655 == (SVf_ROK|SVprv_WEAKREF))
656 #define SvWEAKREF_on(sv) (SvFLAGS(sv) |= (SVf_ROK|SVprv_WEAKREF))
657 #define SvWEAKREF_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK|SVprv_WEAKREF))
659 #define SvTHINKFIRST(sv) (SvFLAGS(sv) & SVf_THINKFIRST)
661 #define SvPADBUSY(sv) (SvFLAGS(sv) & SVs_PADBUSY)
663 #define SvPADTMP(sv) (SvFLAGS(sv) & SVs_PADTMP)
664 #define SvPADTMP_on(sv) (SvFLAGS(sv) |= SVs_PADTMP|SVs_PADBUSY)
665 #define SvPADTMP_off(sv) (SvFLAGS(sv) &= ~SVs_PADTMP)
667 #define SvPADMY(sv) (SvFLAGS(sv) & SVs_PADMY)
668 #define SvPADMY_on(sv) (SvFLAGS(sv) |= SVs_PADMY|SVs_PADBUSY)
670 #define SvTEMP(sv) (SvFLAGS(sv) & SVs_TEMP)
671 #define SvTEMP_on(sv) (SvFLAGS(sv) |= SVs_TEMP)
672 #define SvTEMP_off(sv) (SvFLAGS(sv) &= ~SVs_TEMP)
674 #define SvOBJECT(sv) (SvFLAGS(sv) & SVs_OBJECT)
675 #define SvOBJECT_on(sv) (SvFLAGS(sv) |= SVs_OBJECT)
676 #define SvOBJECT_off(sv) (SvFLAGS(sv) &= ~SVs_OBJECT)
678 #define SvREADONLY(sv) (SvFLAGS(sv) & SVf_READONLY)
679 #define SvREADONLY_on(sv) (SvFLAGS(sv) |= SVf_READONLY)
680 #define SvREADONLY_off(sv) (SvFLAGS(sv) &= ~SVf_READONLY)
682 #define SvSCREAM(sv) (SvFLAGS(sv) & SVp_SCREAM)
683 #define SvSCREAM_on(sv) (SvFLAGS(sv) |= SVp_SCREAM)
684 #define SvSCREAM_off(sv) (SvFLAGS(sv) &= ~SVp_SCREAM)
686 #define SvCOMPILED(sv) (SvFLAGS(sv) & SVpfm_COMPILED)
687 #define SvCOMPILED_on(sv) (SvFLAGS(sv) |= SVpfm_COMPILED)
688 #define SvCOMPILED_off(sv) (SvFLAGS(sv) &= ~SVpfm_COMPILED)
690 #define SvEVALED(sv) (SvFLAGS(sv) & SVrepl_EVAL)
691 #define SvEVALED_on(sv) (SvFLAGS(sv) |= SVrepl_EVAL)
692 #define SvEVALED_off(sv) (SvFLAGS(sv) &= ~SVrepl_EVAL)
694 #define SvTAIL(sv) (SvFLAGS(sv) & SVpbm_TAIL)
695 #define SvTAIL_on(sv) (SvFLAGS(sv) |= SVpbm_TAIL)
696 #define SvTAIL_off(sv) (SvFLAGS(sv) &= ~SVpbm_TAIL)
698 #define SvVALID(sv) (SvFLAGS(sv) & SVpbm_VALID)
699 #define SvVALID_on(sv) (SvFLAGS(sv) |= SVpbm_VALID)
700 #define SvVALID_off(sv) (SvFLAGS(sv) &= ~SVpbm_VALID)
702 #define SvRV(sv) ((XRV*) SvANY(sv))->xrv_rv
703 #define SvRVx(sv) SvRV(sv)
705 #define SvIVX(sv) ((XPVIV*) SvANY(sv))->xiv_iv
706 #define SvIVXx(sv) SvIVX(sv)
707 #define SvUVX(sv) ((XPVUV*) SvANY(sv))->xuv_uv
708 #define SvUVXx(sv) SvUVX(sv)
709 #define SvNVX(sv) ((XPVNV*)SvANY(sv))->xnv_nv
710 #define SvNVXx(sv) SvNVX(sv)
711 #define SvPVX(sv) ((XPV*) SvANY(sv))->xpv_pv
712 #define SvPVXx(sv) SvPVX(sv)
713 #define SvCUR(sv) ((XPV*) SvANY(sv))->xpv_cur
714 #define SvLEN(sv) ((XPV*) SvANY(sv))->xpv_len
715 #define SvLENx(sv) SvLEN(sv)
716 #define SvEND(sv)(((XPV*) SvANY(sv))->xpv_pv + ((XPV*)SvANY(sv))->xpv_cur)
717 #define SvENDx(sv) ((PL_Sv = (sv)), SvEND(PL_Sv))
718 #define SvMAGIC(sv) ((XPVMG*) SvANY(sv))->xmg_magic
719 #define SvSTASH(sv) ((XPVMG*) SvANY(sv))->xmg_stash
721 #define SvIV_set(sv, val) \
722 STMT_START { assert(SvTYPE(sv) == SVt_IV || SvTYPE(sv) >= SVt_PVIV); \
723 (((XPVIV*) SvANY(sv))->xiv_iv = val); } STMT_END
724 #define SvNV_set(sv, val) \
725 STMT_START { assert(SvTYPE(sv) == SVt_NV || SvTYPE(sv) >= SVt_PVNV); \
726 (((XPVNV*) SvANY(sv))->xnv_nv = val); } STMT_END
727 #define SvPV_set(sv, val) \
728 STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
729 (((XPV*) SvANY(sv))->xpv_pv = val); } STMT_END
730 #define SvCUR_set(sv, val) \
731 STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
732 (((XPV*) SvANY(sv))->xpv_cur = val); } STMT_END
733 #define SvLEN_set(sv, val) \
734 STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
735 (((XPV*) SvANY(sv))->xpv_len = val); } STMT_END
736 #define SvEND_set(sv, val) \
737 STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
738 (((XPV*) SvANY(sv))->xpv_cur = val - SvPVX(sv)); } STMT_END
740 #define BmRARE(sv) ((XPVBM*) SvANY(sv))->xbm_rare
741 #define BmUSEFUL(sv) ((XPVBM*) SvANY(sv))->xbm_useful
742 #define BmPREVIOUS(sv) ((XPVBM*) SvANY(sv))->xbm_previous
744 #define FmLINES(sv) ((XPVFM*) SvANY(sv))->xfm_lines
746 #define LvTYPE(sv) ((XPVLV*) SvANY(sv))->xlv_type
747 #define LvTARG(sv) ((XPVLV*) SvANY(sv))->xlv_targ
748 #define LvTARGOFF(sv) ((XPVLV*) SvANY(sv))->xlv_targoff
749 #define LvTARGLEN(sv) ((XPVLV*) SvANY(sv))->xlv_targlen
751 #define IoIFP(sv) ((XPVIO*) SvANY(sv))->xio_ifp
752 #define IoOFP(sv) ((XPVIO*) SvANY(sv))->xio_ofp
753 #define IoDIRP(sv) ((XPVIO*) SvANY(sv))->xio_dirp
754 #define IoANY(sv) ((XPVIO*) SvANY(sv))->xio_any
755 #define IoLINES(sv) ((XPVIO*) SvANY(sv))->xio_lines
756 #define IoPAGE(sv) ((XPVIO*) SvANY(sv))->xio_page
757 #define IoPAGE_LEN(sv) ((XPVIO*) SvANY(sv))->xio_page_len
758 #define IoLINES_LEFT(sv)((XPVIO*) SvANY(sv))->xio_lines_left
759 #define IoTOP_NAME(sv) ((XPVIO*) SvANY(sv))->xio_top_name
760 #define IoTOP_GV(sv) ((XPVIO*) SvANY(sv))->xio_top_gv
761 #define IoFMT_NAME(sv) ((XPVIO*) SvANY(sv))->xio_fmt_name
762 #define IoFMT_GV(sv) ((XPVIO*) SvANY(sv))->xio_fmt_gv
763 #define IoBOTTOM_NAME(sv)((XPVIO*) SvANY(sv))->xio_bottom_name
764 #define IoBOTTOM_GV(sv) ((XPVIO*) SvANY(sv))->xio_bottom_gv
765 #define IoSUBPROCESS(sv)((XPVIO*) SvANY(sv))->xio_subprocess
766 #define IoTYPE(sv) ((XPVIO*) SvANY(sv))->xio_type
767 #define IoFLAGS(sv) ((XPVIO*) SvANY(sv))->xio_flags
769 /* IoTYPE(sv) is a single character telling the type of I/O connection. */
770 #define IoTYPE_RDONLY '<'
771 #define IoTYPE_WRONLY '>'
772 #define IoTYPE_RDWR '+'
773 #define IoTYPE_APPEND 'a'
774 #define IoTYPE_PIPE '|'
775 #define IoTYPE_STD '-' /* stdin or stdout */
776 #define IoTYPE_SOCKET 's'
777 #define IoTYPE_CLOSED ' '
780 =for apidoc Am|bool|SvTAINTED|SV* sv
781 Checks to see if an SV is tainted. Returns TRUE if it is, FALSE if
784 =for apidoc Am|void|SvTAINTED_on|SV* sv
785 Marks an SV as tainted.
787 =for apidoc Am|void|SvTAINTED_off|SV* sv
788 Untaints an SV. Be I<very> careful with this routine, as it short-circuits
789 some of Perl's fundamental security features. XS module authors should not
790 use this function unless they fully understand all the implications of
791 unconditionally untainting the value. Untainting should be done in the
792 standard perl fashion, via a carefully crafted regexp, rather than directly
793 untainting variables.
795 =for apidoc Am|void|SvTAINT|SV* sv
796 Taints an SV if tainting is enabled
801 #define SvTAINTED(sv) (SvMAGICAL(sv) && sv_tainted(sv))
802 #define SvTAINTED_on(sv) STMT_START{ if(PL_tainting){sv_taint(sv);} }STMT_END
803 #define SvTAINTED_off(sv) STMT_START{ if(PL_tainting){sv_untaint(sv);} }STMT_END
805 #define SvTAINT(sv) \
815 =for apidoc Am|char*|SvPV_force|SV* sv|STRLEN len
816 Like <SvPV> but will force the SV into becoming a string (SvPOK). You want
817 force if you are going to update the SvPVX directly.
819 =for apidoc Am|char*|SvPV|SV* sv|STRLEN len
820 Returns a pointer to the string in the SV, or a stringified form of the SV
821 if the SV does not contain a string. Handles 'get' magic.
823 =for apidoc Am|char*|SvPV_nolen|SV* sv
824 Returns a pointer to the string in the SV, or a stringified form of the SV
825 if the SV does not contain a string. Handles 'get' magic.
827 =for apidoc Am|IV|SvIV|SV* sv
828 Coerces the given SV to an integer and returns it.
830 =for apidoc Am|NV|SvNV|SV* sv
831 Coerce the given SV to a double and return it.
833 =for apidoc Am|UV|SvUV|SV* sv
834 Coerces the given SV to an unsigned integer and returns it.
836 =for apidoc Am|bool|SvTRUE|SV* sv
837 Returns a boolean indicating whether Perl would evaluate the SV as true or
838 false, defined or undefined. Does not handle 'get' magic.
843 #define SvPV_force(sv, lp) sv_pvn_force(sv, &lp)
844 #define SvPV(sv, lp) sv_pvn(sv, &lp)
845 #define SvPV_nolen(sv) sv_pv(sv)
847 #define SvPVutf8_force(sv, lp) sv_pvutf8n_force(sv, &lp)
848 #define SvPVutf8(sv, lp) sv_pvutf8n(sv, &lp)
849 #define SvPVutf8_nolen(sv) sv_pvutf8(sv)
851 #define SvPVbyte_force(sv, lp) sv_pvbyte_force(sv, &lp)
852 #define SvPVbyte(sv, lp) sv_pvbyten(sv, &lp)
853 #define SvPVbyte_nolen(sv) sv_pvbyte(sv)
855 #define SvPVx(sv, lp) sv_pvn(sv, &lp)
856 #define SvPVx_force(sv, lp) sv_pvn_force(sv, &lp)
857 #define SvPVutf8x(sv, lp) sv_pvutf8n(sv, &lp)
858 #define SvPVutf8x_force(sv, lp) sv_pvutf8n_force(sv, &lp)
859 #define SvPVbytex(sv, lp) sv_pvbyten(sv, &lp)
860 #define SvPVbytex_force(sv, lp) sv_pvbyten_force(sv, &lp)
862 #define SvIVx(sv) sv_iv(sv)
863 #define SvUVx(sv) sv_uv(sv)
864 #define SvNVx(sv) sv_nv(sv)
866 #define SvTRUEx(sv) sv_true(sv)
868 #define SvIV(sv) SvIVx(sv)
869 #define SvNV(sv) SvNVx(sv)
870 #define SvUV(sv) SvUVx(sv)
871 #define SvTRUE(sv) SvTRUEx(sv)
874 /* redefine some things to more efficient inlined versions */
876 /* Let us hope that bitmaps for UV and IV are the same */
878 #define SvIV(sv) (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv))
881 #define SvUV(sv) (SvIOK(sv) ? SvUVX(sv) : sv_2uv(sv))
884 #define SvNV(sv) (SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv))
887 #define SvPV(sv, lp) \
888 ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \
889 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pv(sv, &lp))
893 #define SvPV_force(sv, lp) \
894 ((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST)) == SVf_POK \
895 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvn_force(sv, &lp))
898 #define SvPV_nolen(sv) \
899 ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \
900 ? SvPVX(sv) : sv_2pv_nolen(sv))
903 #define SvPVutf8(sv, lp) \
904 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK|SVf_UTF8) \
905 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pvutf8(sv, &lp))
907 #undef SvPVutf8_force
908 #define SvPVutf8_force(sv, lp) \
909 ((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST)) == (SVf_POK|SVf_UTF8) \
910 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvutf8n_force(sv, &lp))
912 #undef SvPVutf8_nolen
913 #define SvPVutf8_nolen(sv) \
914 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK|SVf_UTF8)\
915 ? SvPVX(sv) : sv_2pvutf8_nolen(sv))
918 #define SvPVutf8(sv, lp) \
919 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK|SVf_UTF8) \
920 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pvutf8(sv, &lp))
922 #undef SvPVutf8_force
923 #define SvPVutf8_force(sv, lp) \
924 ((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST)) == (SVf_POK|SVf_UTF8) \
925 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvutf8n_force(sv, &lp))
927 #undef SvPVutf8_nolen
928 #define SvPVutf8_nolen(sv) \
929 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK|SVf_UTF8)\
930 ? SvPVX(sv) : sv_2pvutf8_nolen(sv))
933 #define SvPVbyte(sv, lp) \
934 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK) \
935 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pvbyte(sv, &lp))
937 #undef SvPVbyte_force
938 #define SvPVbyte_force(sv, lp) \
939 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVf_THINKFIRST)) == (SVf_POK) \
940 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvbyte_force(sv, &lp))
942 #undef SvPVbyte_nolen
943 #define SvPVbyte_nolen(sv) \
944 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK)\
945 ? SvPVX(sv) : sv_2pvbyte_nolen(sv))
957 # define SvIVx(sv) ({SV *nsv = (SV*)(sv); SvIV(nsv); })
958 # define SvUVx(sv) ({SV *nsv = (SV*)(sv); SvUV(nsv); })
959 # define SvNVx(sv) ({SV *nsv = (SV*)(sv); SvNV(nsv); })
960 # define SvPVx(sv, lp) ({SV *nsv = (sv); SvPV(nsv, lp); })
961 # define SvPVutf8x(sv, lp) ({SV *nsv = (sv); SvPVutf8(nsv, lp); })
962 # define SvPVbytex(sv, lp) ({SV *nsv = (sv); SvPVbyte(nsv, lp); })
963 # define SvTRUE(sv) ( \
967 ? (({XPV *nxpv = (XPV*)SvANY(sv); \
969 (nxpv->xpv_cur > 1 || \
970 (nxpv->xpv_cur && *nxpv->xpv_pv != '0')); }) \
979 # define SvTRUEx(sv) ({SV *nsv = (sv); SvTRUE(nsv); })
982 /* These inlined macros use globals, which will require a thread
983 * declaration in user code, so we avoid them under threads */
993 # define SvIVx(sv) ((PL_Sv = (sv)), SvIV(PL_Sv))
994 # define SvUVx(sv) ((PL_Sv = (sv)), SvUV(PL_Sv))
995 # define SvNVx(sv) ((PL_Sv = (sv)), SvNV(PL_Sv))
996 # define SvPVx(sv, lp) ((PL_Sv = (sv)), SvPV(PL_Sv, lp))
997 # define SvPVutf8x(sv, lp) ((PL_Sv = (sv)), SvPVutf8(PL_Sv, lp))
998 # define SvPVbytex(sv, lp) ((PL_Sv = (sv)), SvPVbyte(PL_Sv, lp))
999 # define SvTRUE(sv) ( \
1003 ? ((PL_Xpv = (XPV*)SvANY(sv)) && \
1004 (PL_Xpv->xpv_cur > 1 || \
1005 (PL_Xpv->xpv_cur && *PL_Xpv->xpv_pv != '0')) \
1012 ? SvNVX(sv) != 0.0 \
1014 # define SvTRUEx(sv) ((PL_Sv = (sv)), SvTRUE(PL_Sv))
1015 #endif /* !USE_THREADS */
1016 #endif /* !__GNU__ */
1017 #endif /* !CRIPPLED_CC */
1020 =for apidoc Am|SV*|newRV_inc|SV* sv
1022 Creates an RV wrapper for an SV. The reference count for the original SV is
1028 #define newRV_inc(sv) newRV(sv)
1030 /* the following macros update any magic values this sv is associated with */
1033 =for apidoc Am|void|SvGETMAGIC|SV* sv
1034 Invokes C<mg_get> on an SV if it has 'get' magic. This macro evaluates its
1035 argument more than once.
1037 =for apidoc Am|void|SvSETMAGIC|SV* sv
1038 Invokes C<mg_set> on an SV if it has 'set' magic. This macro evaluates its
1039 argument more than once.
1041 =for apidoc Am|void|SvSetSV|SV* dsb|SV* ssv
1042 Calls C<sv_setsv> if dsv is not the same as ssv. May evaluate arguments
1045 =for apidoc Am|void|SvSetSV_nosteal|SV* dsv|SV* ssv
1046 Calls a non-destructive version of C<sv_setsv> if dsv is not the same as
1047 ssv. May evaluate arguments more than once.
1049 =for apidoc Am|void|SvGROW|SV* sv|STRLEN len
1050 Expands the character buffer in the SV so that it has room for the
1051 indicated number of bytes (remember to reserve space for an extra trailing
1052 NUL character). Calls C<sv_grow> to perform the expansion if necessary.
1053 Returns a pointer to the character buffer.
1058 #define SvGETMAGIC(x) STMT_START { if (SvGMAGICAL(x)) mg_get(x); } STMT_END
1059 #define SvSETMAGIC(x) STMT_START { if (SvSMAGICAL(x)) mg_set(x); } STMT_END
1061 #define SvSetSV_and(dst,src,finally) \
1063 if ((dst) != (src)) { \
1064 sv_setsv(dst, src); \
1068 #define SvSetSV_nosteal_and(dst,src,finally) \
1070 if ((dst) != (src)) { \
1071 U32 tMpF = SvFLAGS(src) & SVs_TEMP; \
1073 sv_setsv(dst, src); \
1074 SvFLAGS(src) |= tMpF; \
1079 #define SvSetSV(dst,src) \
1080 SvSetSV_and(dst,src,/*nothing*/;)
1081 #define SvSetSV_nosteal(dst,src) \
1082 SvSetSV_nosteal_and(dst,src,/*nothing*/;)
1084 #define SvSetMagicSV(dst,src) \
1085 SvSetSV_and(dst,src,SvSETMAGIC(dst))
1086 #define SvSetMagicSV_nosteal(dst,src) \
1087 SvSetSV_nosteal_and(dst,src,SvSETMAGIC(dst))
1090 #define SvPEEK(sv) sv_peek(sv)
1092 #define SvPEEK(sv) ""
1095 #define SvIMMORTAL(sv) ((sv)==&PL_sv_undef || (sv)==&PL_sv_yes || (sv)==&PL_sv_no)
1097 #define boolSV(b) ((b) ? &PL_sv_yes : &PL_sv_no)
1099 #define isGV(sv) (SvTYPE(sv) == SVt_PVGV)
1101 #define SvGROW(sv,len) (SvLEN(sv) < (len) ? sv_grow(sv,len) : SvPVX(sv))
1102 #define Sv_Grow sv_grow