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1 | /* sv.h |
2 | * | |
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 | |
5 | * | |
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. | |
8 | * | |
9 | */ | |
10 | ||
11 | #ifdef sv_flags | |
12 | #undef sv_flags /* Convex has this in <signal.h> for sigvec() */ | |
13 | #endif | |
14 | ||
15 | /* | |
16 | =head1 SV Flags | |
17 | ||
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. | |
21 | ||
22 | =for apidoc AmU||SVt_PV | |
23 | Pointer type flag for scalars. See C<svtype>. | |
24 | ||
25 | =for apidoc AmU||SVt_IV | |
26 | Integer type flag for scalars. See C<svtype>. | |
27 | ||
28 | =for apidoc AmU||SVt_NV | |
29 | Double type flag for scalars. See C<svtype>. | |
30 | ||
31 | =for apidoc AmU||SVt_PVMG | |
32 | Type flag for blessed scalars. See C<svtype>. | |
33 | ||
34 | =for apidoc AmU||SVt_PVAV | |
35 | Type flag for arrays. See C<svtype>. | |
36 | ||
37 | =for apidoc AmU||SVt_PVHV | |
38 | Type flag for hashes. See C<svtype>. | |
39 | ||
40 | =for apidoc AmU||SVt_PVCV | |
41 | Type flag for code refs. See C<svtype>. | |
42 | ||
43 | =cut | |
44 | */ | |
45 | ||
46 | typedef enum { | |
47 | SVt_NULL, /* 0 */ | |
48 | SVt_IV, /* 1 */ | |
49 | SVt_NV, /* 2 */ | |
50 | SVt_RV, /* 3 */ | |
51 | SVt_PV, /* 4 */ | |
52 | SVt_PVIV, /* 5 */ | |
53 | SVt_PVNV, /* 6 */ | |
54 | SVt_PVMG, /* 7 */ | |
55 | SVt_PVBM, /* 8 */ | |
56 | SVt_PVLV, /* 9 */ | |
57 | SVt_PVAV, /* 10 */ | |
58 | SVt_PVHV, /* 11 */ | |
59 | SVt_PVCV, /* 12 */ | |
60 | SVt_PVGV, /* 13 */ | |
61 | SVt_PVFM, /* 14 */ | |
62 | SVt_PVIO /* 15 */ | |
63 | } svtype; | |
64 | ||
65 | /* Using C's structural equivalence to help emulate C++ inheritance here... */ | |
66 | ||
67 | struct STRUCT_SV { /* struct sv { */ | |
68 | void* sv_any; /* pointer to something */ | |
69 | U32 sv_refcnt; /* how many references to us */ | |
70 | U32 sv_flags; /* what we are */ | |
71 | }; | |
72 | ||
73 | struct gv { | |
74 | XPVGV* sv_any; /* pointer to something */ | |
75 | U32 sv_refcnt; /* how many references to us */ | |
76 | U32 sv_flags; /* what we are */ | |
77 | }; | |
78 | ||
79 | struct cv { | |
80 | XPVCV* sv_any; /* pointer to something */ | |
81 | U32 sv_refcnt; /* how many references to us */ | |
82 | U32 sv_flags; /* what we are */ | |
83 | }; | |
84 | ||
85 | struct av { | |
86 | XPVAV* sv_any; /* pointer to something */ | |
87 | U32 sv_refcnt; /* how many references to us */ | |
88 | U32 sv_flags; /* what we are */ | |
89 | }; | |
90 | ||
91 | struct hv { | |
92 | XPVHV* sv_any; /* pointer to something */ | |
93 | U32 sv_refcnt; /* how many references to us */ | |
94 | U32 sv_flags; /* what we are */ | |
95 | }; | |
96 | ||
97 | struct io { | |
98 | XPVIO* sv_any; /* pointer to something */ | |
99 | U32 sv_refcnt; /* how many references to us */ | |
100 | U32 sv_flags; /* what we are */ | |
101 | }; | |
102 | ||
103 | /* | |
104 | =head1 SV Manipulation Functions | |
105 | ||
106 | =for apidoc Am|U32|SvREFCNT|SV* sv | |
107 | Returns the value of the object's reference count. | |
108 | ||
109 | =for apidoc Am|SV*|SvREFCNT_inc|SV* sv | |
110 | Increments the reference count of the given SV. | |
111 | ||
112 | =for apidoc Am|void|SvREFCNT_dec|SV* sv | |
113 | Decrements the reference count of the given SV. | |
114 | ||
115 | =for apidoc Am|svtype|SvTYPE|SV* sv | |
116 | Returns the type of the SV. See C<svtype>. | |
117 | ||
118 | =for apidoc Am|void|SvUPGRADE|SV* sv|svtype type | |
119 | Used to upgrade an SV to a more complex form. Uses C<sv_upgrade> to | |
120 | perform the upgrade if necessary. See C<svtype>. | |
121 | ||
122 | =cut | |
123 | */ | |
124 | ||
125 | #define SvANY(sv) (sv)->sv_any | |
126 | #define SvFLAGS(sv) (sv)->sv_flags | |
127 | #define SvREFCNT(sv) (sv)->sv_refcnt | |
128 | ||
129 | #ifdef USE_5005THREADS | |
130 | ||
131 | # if defined(VMS) | |
132 | # define ATOMIC_INC(count) __ATOMIC_INCREMENT_LONG(&count) | |
133 | # define ATOMIC_DEC_AND_TEST(res,count) res=(1==__ATOMIC_DECREMENT_LONG(&count)) | |
134 | # else | |
135 | # ifdef EMULATE_ATOMIC_REFCOUNTS | |
136 | # define ATOMIC_INC(count) STMT_START { \ | |
137 | MUTEX_LOCK(&PL_svref_mutex); \ | |
138 | ++count; \ | |
139 | MUTEX_UNLOCK(&PL_svref_mutex); \ | |
140 | } STMT_END | |
141 | # define ATOMIC_DEC_AND_TEST(res,count) STMT_START { \ | |
142 | MUTEX_LOCK(&PL_svref_mutex); \ | |
143 | res = (--count == 0); \ | |
144 | MUTEX_UNLOCK(&PL_svref_mutex); \ | |
145 | } STMT_END | |
146 | # else | |
147 | # define ATOMIC_INC(count) atomic_inc(&count) | |
148 | # define ATOMIC_DEC_AND_TEST(res,count) (res = atomic_dec_and_test(&count)) | |
149 | # endif /* EMULATE_ATOMIC_REFCOUNTS */ | |
150 | # endif /* VMS */ | |
151 | #else | |
152 | # define ATOMIC_INC(count) (++count) | |
153 | # define ATOMIC_DEC_AND_TEST(res, count) (res = (--count == 0)) | |
154 | #endif /* USE_5005THREADS */ | |
155 | ||
156 | #if defined(__GNUC__) && !defined(__STRICT_ANSI__) && !defined(PERL_GCC_PEDANTIC) | |
157 | # define SvREFCNT_inc(sv) \ | |
158 | ({ \ | |
159 | SV * const _sv = (SV*)(sv); \ | |
160 | if (_sv) \ | |
161 | ATOMIC_INC(SvREFCNT(_sv)); \ | |
162 | _sv; \ | |
163 | }) | |
164 | #else | |
165 | # ifdef USE_5005THREADS | |
166 | # if defined(VMS) && defined(__ALPHA) | |
167 | # define SvREFCNT_inc(sv) \ | |
168 | (PL_Sv=(SV*)(sv), (PL_Sv && __ATOMIC_INCREMENT_LONG(&(SvREFCNT(PL_Sv)))), (SV *)PL_Sv) | |
169 | # else | |
170 | # define SvREFCNT_inc(sv) sv_newref((SV*)sv) | |
171 | # endif | |
172 | # else | |
173 | # define SvREFCNT_inc(sv) \ | |
174 | ((PL_Sv=(SV*)(sv)), (PL_Sv && ATOMIC_INC(SvREFCNT(PL_Sv))), (SV*)PL_Sv) | |
175 | # endif | |
176 | #endif | |
177 | ||
178 | #define SvREFCNT_dec(sv) sv_free((SV*)(sv)) | |
179 | ||
180 | #define SVTYPEMASK 0xff | |
181 | #define SvTYPE(sv) ((sv)->sv_flags & SVTYPEMASK) | |
182 | ||
183 | #define SvUPGRADE(sv, mt) (SvTYPE(sv) >= mt || sv_upgrade(sv, mt)) | |
184 | ||
185 | #define SVs_PADBUSY 0x00000100 /* reserved for tmp or my already */ | |
186 | #define SVs_PADTMP 0x00000200 /* in use as tmp */ | |
187 | #define SVs_PADMY 0x00000400 /* in use a "my" variable */ | |
188 | #define SVs_TEMP 0x00000800 /* string is stealable? */ | |
189 | #define SVs_OBJECT 0x00001000 /* is "blessed" */ | |
190 | #define SVs_GMG 0x00002000 /* has magical get method */ | |
191 | #define SVs_SMG 0x00004000 /* has magical set method */ | |
192 | #define SVs_RMG 0x00008000 /* has random magical methods */ | |
193 | ||
194 | #define SVf_IOK 0x00010000 /* has valid public integer value */ | |
195 | #define SVf_NOK 0x00020000 /* has valid public numeric value */ | |
196 | #define SVf_POK 0x00040000 /* has valid public pointer value */ | |
197 | #define SVf_ROK 0x00080000 /* has a valid reference pointer */ | |
198 | ||
199 | #define SVf_FAKE 0x00100000 /* glob or lexical is just a copy */ | |
200 | #define SVf_OOK 0x00200000 /* has valid offset value */ | |
201 | #define SVf_BREAK 0x00400000 /* refcnt is artificially low - used | |
202 | * by SV's in final arena cleanup */ | |
203 | #define SVf_READONLY 0x00800000 /* may not be modified */ | |
204 | ||
205 | ||
206 | #define SVp_IOK 0x01000000 /* has valid non-public integer value */ | |
207 | #define SVp_NOK 0x02000000 /* has valid non-public numeric value */ | |
208 | #define SVp_POK 0x04000000 /* has valid non-public pointer value */ | |
209 | #define SVp_SCREAM 0x08000000 /* has been studied? */ | |
210 | ||
211 | #define SVf_UTF8 0x20000000 /* SvPV is UTF-8 encoded */ | |
212 | ||
213 | #define SVf_THINKFIRST (SVf_READONLY|SVf_ROK|SVf_FAKE) | |
214 | ||
215 | #define SVf_OK (SVf_IOK|SVf_NOK|SVf_POK|SVf_ROK| \ | |
216 | SVp_IOK|SVp_NOK|SVp_POK) | |
217 | ||
218 | #define SVf_AMAGIC 0x10000000 /* has magical overloaded methods */ | |
219 | ||
220 | #define PRIVSHIFT 8 /* (SVp_?OK >> PRIVSHIFT) == SVf_?OK */ | |
221 | ||
222 | /* Some private flags. */ | |
223 | ||
224 | /* SVpad_OUR may be set on SVt_PV{NV,MG,GV} types */ | |
225 | #define SVpad_OUR 0x80000000 /* pad name is "our" instead of "my" */ | |
226 | #define SVpad_TYPED 0x40000000 /* Typed Lexical */ | |
227 | ||
228 | #define SVf_IVisUV 0x80000000 /* use XPVUV instead of XPVIV */ | |
229 | ||
230 | #define SVpfm_COMPILED 0x80000000 /* FORMLINE is compiled */ | |
231 | ||
232 | #define SVpbm_VALID 0x80000000 | |
233 | #define SVpbm_TAIL 0x40000000 | |
234 | ||
235 | #define SVrepl_EVAL 0x40000000 /* Replacement part of s///e */ | |
236 | ||
237 | #define SVphv_CLONEABLE 0x08000000 /* for stashes: clone its objects */ | |
238 | #define SVphv_REHASH 0x10000000 /* HV is recalculating hash values */ | |
239 | #define SVphv_SHAREKEYS 0x20000000 /* keys live on shared string table */ | |
240 | #define SVphv_LAZYDEL 0x40000000 /* entry in xhv_eiter must be deleted */ | |
241 | #define SVphv_HASKFLAGS 0x80000000 /* keys have flag byte after hash */ | |
242 | ||
243 | #define SVprv_WEAKREF 0x80000000 /* Weak reference */ | |
244 | ||
245 | struct xrv { | |
246 | SV * xrv_rv; /* pointer to another SV */ | |
247 | }; | |
248 | ||
249 | struct xpv { | |
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 | }; | |
254 | ||
255 | struct xpviv { | |
256 | char * xpv_pv; /* pointer to malloced string */ | |
257 | STRLEN xpv_cur; /* length of xpv_pv as a C string */ | |
258 | STRLEN xpv_len; /* allocated size */ | |
259 | IV xiv_iv; /* integer value or pv offset */ | |
260 | }; | |
261 | ||
262 | struct xpvuv { | |
263 | char * xpv_pv; /* pointer to malloced string */ | |
264 | STRLEN xpv_cur; /* length of xpv_pv as a C string */ | |
265 | STRLEN xpv_len; /* allocated size */ | |
266 | UV xuv_uv; /* unsigned value or pv offset */ | |
267 | }; | |
268 | ||
269 | struct xpvnv { | |
270 | char * xpv_pv; /* pointer to malloced string */ | |
271 | STRLEN xpv_cur; /* length of xpv_pv as a C string */ | |
272 | STRLEN xpv_len; /* allocated size */ | |
273 | IV xiv_iv; /* integer value or pv offset */ | |
274 | NV xnv_nv; /* numeric value, if any */ | |
275 | }; | |
276 | ||
277 | /* These structure must match the beginning of struct xpvhv in hv.h. */ | |
278 | struct xpvmg { | |
279 | char * xpv_pv; /* pointer to malloced string */ | |
280 | STRLEN xpv_cur; /* length of xpv_pv as a C string */ | |
281 | STRLEN xpv_len; /* allocated size */ | |
282 | IV xiv_iv; /* integer value or pv offset */ | |
283 | NV xnv_nv; /* numeric value, if any */ | |
284 | MAGIC* xmg_magic; /* linked list of magicalness */ | |
285 | HV* xmg_stash; /* class package */ | |
286 | }; | |
287 | ||
288 | struct xpvlv { | |
289 | char * xpv_pv; /* pointer to malloced string */ | |
290 | STRLEN xpv_cur; /* length of xpv_pv as a C string */ | |
291 | STRLEN xpv_len; /* allocated size */ | |
292 | IV xiv_iv; /* integer value or pv offset */ | |
293 | NV xnv_nv; /* numeric value, if any */ | |
294 | MAGIC* xmg_magic; /* linked list of magicalness */ | |
295 | HV* xmg_stash; /* class package */ | |
296 | ||
297 | STRLEN xlv_targoff; | |
298 | STRLEN xlv_targlen; | |
299 | SV* xlv_targ; | |
300 | char xlv_type; /* k=keys .=pos x=substr v=vec /=join/re | |
301 | * y=alem/helem/iter t=tie T=tied HE */ | |
302 | }; | |
303 | ||
304 | struct xpvgv { | |
305 | char * xpv_pv; /* pointer to malloced string */ | |
306 | STRLEN xpv_cur; /* length of xpv_pv as a C string */ | |
307 | STRLEN xpv_len; /* allocated size */ | |
308 | IV xiv_iv; /* integer value or pv offset */ | |
309 | NV xnv_nv; /* numeric value, if any */ | |
310 | MAGIC* xmg_magic; /* linked list of magicalness */ | |
311 | HV* xmg_stash; /* class package */ | |
312 | ||
313 | GP* xgv_gp; | |
314 | char* xgv_name; | |
315 | STRLEN xgv_namelen; | |
316 | HV* xgv_stash; | |
317 | U8 xgv_flags; | |
318 | }; | |
319 | ||
320 | struct xpvbm { | |
321 | char * xpv_pv; /* pointer to malloced string */ | |
322 | STRLEN xpv_cur; /* length of xpv_pv as a C string */ | |
323 | STRLEN xpv_len; /* allocated size */ | |
324 | IV xiv_iv; /* integer value or pv offset */ | |
325 | NV xnv_nv; /* numeric value, if any */ | |
326 | MAGIC* xmg_magic; /* linked list of magicalness */ | |
327 | HV* xmg_stash; /* class package */ | |
328 | ||
329 | I32 xbm_useful; /* is this constant pattern being useful? */ | |
330 | U16 xbm_previous; /* how many characters in string before rare? */ | |
331 | U8 xbm_rare; /* rarest character in string */ | |
332 | }; | |
333 | ||
334 | /* This structure must match XPVCV in cv.h */ | |
335 | ||
336 | typedef U16 cv_flags_t; | |
337 | ||
338 | struct xpvfm { | |
339 | char * xpv_pv; /* pointer to malloced string */ | |
340 | STRLEN xpv_cur; /* length of xpv_pv as a C string */ | |
341 | STRLEN xpv_len; /* allocated size */ | |
342 | IV xiv_iv; /* integer value or pv offset */ | |
343 | NV xnv_nv; /* numeric value, if any */ | |
344 | MAGIC* xmg_magic; /* linked list of magicalness */ | |
345 | HV* xmg_stash; /* class package */ | |
346 | ||
347 | HV * xcv_stash; | |
348 | OP * xcv_start; | |
349 | OP * xcv_root; | |
350 | void (*xcv_xsub)(pTHX_ CV*); | |
351 | ANY xcv_xsubany; | |
352 | GV * xcv_gv; | |
353 | char * xcv_file; | |
354 | long xcv_depth; /* >= 2 indicates recursive call */ | |
355 | AV * xcv_padlist; | |
356 | CV * xcv_outside; | |
357 | #ifdef USE_5005THREADS | |
358 | perl_mutex *xcv_mutexp; /* protects xcv_owner */ | |
359 | struct perl_thread *xcv_owner; /* current owner thread */ | |
360 | #endif /* USE_5005THREADS */ | |
361 | cv_flags_t xcv_flags; | |
362 | U32 xcv_outside_seq; /* the COP sequence (at the point of our | |
363 | * compilation) in the lexically enclosing | |
364 | * sub */ | |
365 | IV xfm_lines; | |
366 | }; | |
367 | ||
368 | struct xpvio { | |
369 | char * xpv_pv; /* pointer to malloced string */ | |
370 | STRLEN xpv_cur; /* length of xpv_pv as a C string */ | |
371 | STRLEN xpv_len; /* allocated size */ | |
372 | IV xiv_iv; /* integer value or pv offset */ | |
373 | NV xnv_nv; /* numeric value, if any */ | |
374 | MAGIC* xmg_magic; /* linked list of magicalness */ | |
375 | HV* xmg_stash; /* class package */ | |
376 | ||
377 | PerlIO * xio_ifp; /* ifp and ofp are normally the same */ | |
378 | PerlIO * xio_ofp; /* but sockets need separate streams */ | |
379 | /* Cray addresses everything by word boundaries (64 bits) and | |
380 | * code and data pointers cannot be mixed (which is exactly what | |
381 | * Perl_filter_add() tries to do with the dirp), hence the following | |
382 | * union trick (as suggested by Gurusamy Sarathy). | |
383 | * For further information see Geir Johansen's problem report titled | |
384 | [ID 20000612.002] Perl problem on Cray system | |
385 | * The any pointer (known as IoANY()) will also be a good place | |
386 | * to hang any IO disciplines to. | |
387 | */ | |
388 | union { | |
389 | DIR * xiou_dirp; /* for opendir, readdir, etc */ | |
390 | void * xiou_any; /* for alignment */ | |
391 | } xio_dirpu; | |
392 | IV xio_lines; /* $. */ | |
393 | IV xio_page; /* $% */ | |
394 | IV xio_page_len; /* $= */ | |
395 | IV xio_lines_left; /* $- */ | |
396 | char * xio_top_name; /* $^ */ | |
397 | GV * xio_top_gv; /* $^ */ | |
398 | char * xio_fmt_name; /* $~ */ | |
399 | GV * xio_fmt_gv; /* $~ */ | |
400 | char * xio_bottom_name;/* $^B */ | |
401 | GV * xio_bottom_gv; /* $^B */ | |
402 | short xio_subprocess; /* -| or |- */ | |
403 | char xio_type; | |
404 | char xio_flags; | |
405 | }; | |
406 | #define xio_dirp xio_dirpu.xiou_dirp | |
407 | #define xio_any xio_dirpu.xiou_any | |
408 | ||
409 | #define IOf_ARGV 1 /* this fp iterates over ARGV */ | |
410 | #define IOf_START 2 /* check for null ARGV and substitute '-' */ | |
411 | #define IOf_FLUSH 4 /* this fp wants a flush after write op */ | |
412 | #define IOf_DIDTOP 8 /* just did top of form */ | |
413 | #define IOf_UNTAINT 16 /* consider this fp (and its data) "safe" */ | |
414 | #define IOf_NOLINE 32 /* slurped a pseudo-line from empty file */ | |
415 | #define IOf_FAKE_DIRP 64 /* xio_dirp is fake (source filters kludge) */ | |
416 | ||
417 | /* The following macros define implementation-independent predicates on SVs. */ | |
418 | ||
419 | /* | |
420 | =for apidoc Am|bool|SvNIOK|SV* sv | |
421 | Returns a boolean indicating whether the SV contains a number, integer or | |
422 | double. | |
423 | ||
424 | =for apidoc Am|bool|SvNIOKp|SV* sv | |
425 | Returns a boolean indicating whether the SV contains a number, integer or | |
426 | double. Checks the B<private> setting. Use C<SvNIOK>. | |
427 | ||
428 | =for apidoc Am|void|SvNIOK_off|SV* sv | |
429 | Unsets the NV/IV status of an SV. | |
430 | ||
431 | =for apidoc Am|bool|SvOK|SV* sv | |
432 | Returns a boolean indicating whether the value is an SV. It also tells | |
433 | whether the value is defined or not. | |
434 | ||
435 | =for apidoc Am|bool|SvIOKp|SV* sv | |
436 | Returns a boolean indicating whether the SV contains an integer. Checks | |
437 | the B<private> setting. Use C<SvIOK>. | |
438 | ||
439 | =for apidoc Am|bool|SvNOKp|SV* sv | |
440 | Returns a boolean indicating whether the SV contains a double. Checks the | |
441 | B<private> setting. Use C<SvNOK>. | |
442 | ||
443 | =for apidoc Am|bool|SvPOKp|SV* sv | |
444 | Returns a boolean indicating whether the SV contains a character string. | |
445 | Checks the B<private> setting. Use C<SvPOK>. | |
446 | ||
447 | =for apidoc Am|bool|SvIOK|SV* sv | |
448 | Returns a boolean indicating whether the SV contains an integer. | |
449 | ||
450 | =for apidoc Am|void|SvIOK_on|SV* sv | |
451 | Tells an SV that it is an integer. | |
452 | ||
453 | =for apidoc Am|void|SvIOK_off|SV* sv | |
454 | Unsets the IV status of an SV. | |
455 | ||
456 | =for apidoc Am|void|SvIOK_only|SV* sv | |
457 | Tells an SV that it is an integer and disables all other OK bits. | |
458 | ||
459 | =for apidoc Am|void|SvIOK_only_UV|SV* sv | |
460 | Tells and SV that it is an unsigned integer and disables all other OK bits. | |
461 | ||
462 | =for apidoc Am|bool|SvIOK_UV|SV* sv | |
463 | Returns a boolean indicating whether the SV contains an unsigned integer. | |
464 | ||
465 | =for apidoc Am|void|SvUOK|SV* sv | |
466 | Returns a boolean indicating whether the SV contains an unsigned integer. | |
467 | ||
468 | =for apidoc Am|bool|SvIOK_notUV|SV* sv | |
469 | Returns a boolean indicating whether the SV contains a signed integer. | |
470 | ||
471 | =for apidoc Am|bool|SvNOK|SV* sv | |
472 | Returns a boolean indicating whether the SV contains a double. | |
473 | ||
474 | =for apidoc Am|void|SvNOK_on|SV* sv | |
475 | Tells an SV that it is a double. | |
476 | ||
477 | =for apidoc Am|void|SvNOK_off|SV* sv | |
478 | Unsets the NV status of an SV. | |
479 | ||
480 | =for apidoc Am|void|SvNOK_only|SV* sv | |
481 | Tells an SV that it is a double and disables all other OK bits. | |
482 | ||
483 | =for apidoc Am|bool|SvPOK|SV* sv | |
484 | Returns a boolean indicating whether the SV contains a character | |
485 | string. | |
486 | ||
487 | =for apidoc Am|void|SvPOK_on|SV* sv | |
488 | Tells an SV that it is a string. | |
489 | ||
490 | =for apidoc Am|void|SvPOK_off|SV* sv | |
491 | Unsets the PV status of an SV. | |
492 | ||
493 | =for apidoc Am|void|SvPOK_only|SV* sv | |
494 | Tells an SV that it is a string and disables all other OK bits. | |
495 | Will also turn off the UTF-8 status. | |
496 | ||
497 | =for apidoc Am|bool|SvOOK|SV* sv | |
498 | Returns a boolean indicating whether the SvIVX is a valid offset value for | |
499 | the SvPVX. This hack is used internally to speed up removal of characters | |
500 | from the beginning of a SvPV. When SvOOK is true, then the start of the | |
501 | allocated string buffer is really (SvPVX - SvIVX). | |
502 | ||
503 | =for apidoc Am|bool|SvROK|SV* sv | |
504 | Tests if the SV is an RV. | |
505 | ||
506 | =for apidoc Am|void|SvROK_on|SV* sv | |
507 | Tells an SV that it is an RV. | |
508 | ||
509 | =for apidoc Am|void|SvROK_off|SV* sv | |
510 | Unsets the RV status of an SV. | |
511 | ||
512 | =for apidoc Am|SV*|SvRV|SV* sv | |
513 | Dereferences an RV to return the SV. | |
514 | ||
515 | =for apidoc Am|IV|SvIVX|SV* sv | |
516 | Returns the raw value in the SV's IV slot, without checks or conversions. | |
517 | Only use when you are sure SvIOK is true. See also C<SvIV()>. | |
518 | ||
519 | =for apidoc Am|UV|SvUVX|SV* sv | |
520 | Returns the raw value in the SV's UV slot, without checks or conversions. | |
521 | Only use when you are sure SvIOK is true. See also C<SvUV()>. | |
522 | ||
523 | =for apidoc Am|NV|SvNVX|SV* sv | |
524 | Returns the raw value in the SV's NV slot, without checks or conversions. | |
525 | Only use when you are sure SvNOK is true. See also C<SvNV()>. | |
526 | ||
527 | =for apidoc Am|char*|SvPVX|SV* sv | |
528 | Returns a pointer to the physical string in the SV. The SV must contain a | |
529 | string. | |
530 | ||
531 | =for apidoc Am|STRLEN|SvCUR|SV* sv | |
532 | Returns the length of the string which is in the SV. See C<SvLEN>. | |
533 | ||
534 | =for apidoc Am|STRLEN|SvLEN|SV* sv | |
535 | Returns the size of the string buffer in the SV, not including any part | |
536 | attributable to C<SvOOK>. See C<SvCUR>. | |
537 | ||
538 | =for apidoc Am|char*|SvEND|SV* sv | |
539 | Returns a pointer to the last character in the string which is in the SV. | |
540 | See C<SvCUR>. Access the character as *(SvEND(sv)). | |
541 | ||
542 | =for apidoc Am|HV*|SvSTASH|SV* sv | |
543 | Returns the stash of the SV. | |
544 | ||
545 | =for apidoc Am|void|SvIV_set|SV* sv|IV val | |
546 | Set the value of the IV pointer in sv to val. It is possible to perform | |
547 | the same function of this macro with an lvalue assignment to C<SvIVX>. | |
548 | With future Perls, however, it will be more efficient to use | |
549 | C<SvIV_set> instead of the lvalue assignment to C<SvIVX>. | |
550 | ||
551 | =for apidoc Am|void|SvNV_set|SV* sv|NV val | |
552 | Set the value of the NV pointer in sv to val. See C<SvIV_set>. | |
553 | ||
554 | =for apidoc Am|void|SvPV_set|SV* sv|char* val | |
555 | Set the value of the PV pointer in sv to val. See C<SvIV_set>. | |
556 | ||
557 | =for apidoc Am|void|SvUV_set|SV* sv|UV val | |
558 | Set the value of the UV pointer in sv to val. See C<SvIV_set>. | |
559 | ||
560 | =for apidoc Am|void|SvRV_set|SV* sv|SV* val | |
561 | Set the value of the RV pointer in sv to val. See C<SvIV_set>. | |
562 | ||
563 | =for apidoc Am|void|SvMAGIC_set|SV* sv|MAGIC* val | |
564 | Set the value of the MAGIC pointer in sv to val. See C<SvIV_set>. | |
565 | ||
566 | =for apidoc Am|void|SvSTASH_set|SV* sv|STASH* val | |
567 | Set the value of the STASH pointer in sv to val. See C<SvIV_set>. | |
568 | ||
569 | =for apidoc Am|void|SvCUR_set|SV* sv|STRLEN len | |
570 | Set the current length of the string which is in the SV. See C<SvCUR> | |
571 | and C<SvIV_set>. | |
572 | ||
573 | =for apidoc Am|void|SvLEN_set|SV* sv|STRLEN len | |
574 | Set the actual length of the string which is in the SV. See C<SvIV_set>. | |
575 | ||
576 | =cut | |
577 | */ | |
578 | ||
579 | #define SvNIOK(sv) (SvFLAGS(sv) & (SVf_IOK|SVf_NOK)) | |
580 | #define SvNIOKp(sv) (SvFLAGS(sv) & (SVp_IOK|SVp_NOK)) | |
581 | #define SvNIOK_off(sv) (SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK| \ | |
582 | SVp_IOK|SVp_NOK|SVf_IVisUV)) | |
583 | ||
584 | #if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) | |
585 | #define assert_not_ROK(sv) ({assert(!SvROK(sv) || !SvRV(sv));}), | |
586 | #else | |
587 | #define assert_not_ROK(sv) | |
588 | #endif | |
589 | ||
590 | #define SvOK(sv) (SvFLAGS(sv) & SVf_OK) | |
591 | #define SvOK_off(sv) (assert_not_ROK(sv) \ | |
592 | SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \ | |
593 | SVf_IVisUV|SVf_UTF8), \ | |
594 | SvOOK_off(sv)) | |
595 | #define SvOK_off_exc_UV(sv) (assert_not_ROK(sv) \ | |
596 | SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \ | |
597 | SVf_UTF8), \ | |
598 | SvOOK_off(sv)) | |
599 | ||
600 | #define SvOKp(sv) (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) | |
601 | #define SvIOKp(sv) (SvFLAGS(sv) & SVp_IOK) | |
602 | #define SvIOKp_on(sv) ((void)SvOOK_off(sv), SvFLAGS(sv) |= SVp_IOK) | |
603 | #define SvNOKp(sv) (SvFLAGS(sv) & SVp_NOK) | |
604 | #define SvNOKp_on(sv) (SvFLAGS(sv) |= SVp_NOK) | |
605 | #define SvPOKp(sv) (SvFLAGS(sv) & SVp_POK) | |
606 | #define SvPOKp_on(sv) (assert_not_ROK(sv) \ | |
607 | SvFLAGS(sv) |= SVp_POK) | |
608 | ||
609 | #define SvIOK(sv) (SvFLAGS(sv) & SVf_IOK) | |
610 | #define SvIOK_on(sv) ((void)SvOOK_off(sv), \ | |
611 | SvFLAGS(sv) |= (SVf_IOK|SVp_IOK)) | |
612 | #define SvIOK_off(sv) (SvFLAGS(sv) &= ~(SVf_IOK|SVp_IOK|SVf_IVisUV)) | |
613 | #define SvIOK_only(sv) (SvOK_off(sv), \ | |
614 | SvFLAGS(sv) |= (SVf_IOK|SVp_IOK)) | |
615 | #define SvIOK_only_UV(sv) (SvOK_off_exc_UV(sv), \ | |
616 | SvFLAGS(sv) |= (SVf_IOK|SVp_IOK)) | |
617 | ||
618 | #define SvIOK_UV(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV)) \ | |
619 | == (SVf_IOK|SVf_IVisUV)) | |
620 | #define SvUOK(sv) SvIOK_UV(sv) | |
621 | #define SvIOK_notUV(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV)) \ | |
622 | == SVf_IOK) | |
623 | ||
624 | #define SvVOK(sv) (SvMAGICAL(sv) && mg_find(sv,'V')) | |
625 | #define SvIsUV(sv) (SvFLAGS(sv) & SVf_IVisUV) | |
626 | #define SvIsUV_on(sv) (SvFLAGS(sv) |= SVf_IVisUV) | |
627 | #define SvIsUV_off(sv) (SvFLAGS(sv) &= ~SVf_IVisUV) | |
628 | ||
629 | #define SvNOK(sv) (SvFLAGS(sv) & SVf_NOK) | |
630 | #define SvNOK_on(sv) (SvFLAGS(sv) |= (SVf_NOK|SVp_NOK)) | |
631 | #define SvNOK_off(sv) (SvFLAGS(sv) &= ~(SVf_NOK|SVp_NOK)) | |
632 | #define SvNOK_only(sv) (SvOK_off(sv), \ | |
633 | SvFLAGS(sv) |= (SVf_NOK|SVp_NOK)) | |
634 | ||
635 | /* | |
636 | =for apidoc Am|bool|SvUTF8|SV* sv | |
637 | Returns a boolean indicating whether the SV contains UTF-8 encoded data. | |
638 | ||
639 | =for apidoc Am|void|SvUTF8_on|SV *sv | |
640 | Turn on the UTF-8 status of an SV (the data is not changed, just the flag). | |
641 | Do not use frivolously. | |
642 | ||
643 | =for apidoc Am|void|SvUTF8_off|SV *sv | |
644 | Unsets the UTF-8 status of an SV. | |
645 | ||
646 | =for apidoc Am|void|SvPOK_only_UTF8|SV* sv | |
647 | Tells an SV that it is a string and disables all other OK bits, | |
648 | and leaves the UTF-8 status as it was. | |
649 | ||
650 | =cut | |
651 | */ | |
652 | ||
653 | #define SvUTF8(sv) (SvFLAGS(sv) & SVf_UTF8) | |
654 | #define SvUTF8_on(sv) (SvFLAGS(sv) |= (SVf_UTF8)) | |
655 | #define SvUTF8_off(sv) (SvFLAGS(sv) &= ~(SVf_UTF8)) | |
656 | ||
657 | #define SvPOK(sv) (SvFLAGS(sv) & SVf_POK) | |
658 | #define SvPOK_on(sv) (assert_not_ROK(sv) \ | |
659 | SvFLAGS(sv) |= (SVf_POK|SVp_POK)) | |
660 | #define SvPOK_off(sv) (SvFLAGS(sv) &= ~(SVf_POK|SVp_POK)) | |
661 | #define SvPOK_only(sv) (assert_not_ROK(sv) \ | |
662 | SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \ | |
663 | SVf_IVisUV|SVf_UTF8), \ | |
664 | SvFLAGS(sv) |= (SVf_POK|SVp_POK)) | |
665 | #define SvPOK_only_UTF8(sv) (assert_not_ROK(sv) \ | |
666 | SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \ | |
667 | SVf_IVisUV), \ | |
668 | SvFLAGS(sv) |= (SVf_POK|SVp_POK)) | |
669 | ||
670 | #define SvOOK(sv) (SvFLAGS(sv) & SVf_OOK) | |
671 | #define SvOOK_on(sv) ((void)SvIOK_off(sv), SvFLAGS(sv) |= SVf_OOK) | |
672 | #define SvOOK_off(sv) ((void)(SvOOK(sv) && sv_backoff(sv))) | |
673 | ||
674 | #define SvFAKE(sv) (SvFLAGS(sv) & SVf_FAKE) | |
675 | #define SvFAKE_on(sv) (SvFLAGS(sv) |= SVf_FAKE) | |
676 | #define SvFAKE_off(sv) (SvFLAGS(sv) &= ~SVf_FAKE) | |
677 | ||
678 | #define SvROK(sv) (SvFLAGS(sv) & SVf_ROK) | |
679 | #define SvROK_on(sv) (SvFLAGS(sv) |= SVf_ROK) | |
680 | #define SvROK_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK|SVf_AMAGIC)) | |
681 | ||
682 | #define SvMAGICAL(sv) (SvFLAGS(sv) & (SVs_GMG|SVs_SMG|SVs_RMG)) | |
683 | #define SvMAGICAL_on(sv) (SvFLAGS(sv) |= (SVs_GMG|SVs_SMG|SVs_RMG)) | |
684 | #define SvMAGICAL_off(sv) (SvFLAGS(sv) &= ~(SVs_GMG|SVs_SMG|SVs_RMG)) | |
685 | ||
686 | #define SvGMAGICAL(sv) (SvFLAGS(sv) & SVs_GMG) | |
687 | #define SvGMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_GMG) | |
688 | #define SvGMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_GMG) | |
689 | ||
690 | #define SvSMAGICAL(sv) (SvFLAGS(sv) & SVs_SMG) | |
691 | #define SvSMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_SMG) | |
692 | #define SvSMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_SMG) | |
693 | ||
694 | #define SvRMAGICAL(sv) (SvFLAGS(sv) & SVs_RMG) | |
695 | #define SvRMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_RMG) | |
696 | #define SvRMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_RMG) | |
697 | ||
698 | #define SvAMAGIC(sv) (SvFLAGS(sv) & SVf_AMAGIC) | |
699 | #define SvAMAGIC_on(sv) (SvFLAGS(sv) |= SVf_AMAGIC) | |
700 | #define SvAMAGIC_off(sv) (SvFLAGS(sv) &= ~SVf_AMAGIC) | |
701 | ||
702 | #define SvGAMAGIC(sv) (SvFLAGS(sv) & (SVs_GMG|SVf_AMAGIC)) | |
703 | ||
704 | /* | |
705 | #define Gv_AMG(stash) \ | |
706 | (HV_AMAGICmb(stash) && \ | |
707 | ((!HV_AMAGICbad(stash) && HV_AMAGIC(stash)) || Gv_AMupdate(stash))) | |
708 | */ | |
709 | #define Gv_AMG(stash) (PL_amagic_generation && Gv_AMupdate(stash)) | |
710 | ||
711 | #define SvWEAKREF(sv) ((SvFLAGS(sv) & (SVf_ROK|SVprv_WEAKREF)) \ | |
712 | == (SVf_ROK|SVprv_WEAKREF)) | |
713 | #define SvWEAKREF_on(sv) (SvFLAGS(sv) |= (SVf_ROK|SVprv_WEAKREF)) | |
714 | #define SvWEAKREF_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK|SVprv_WEAKREF)) | |
715 | ||
716 | #define SvTHINKFIRST(sv) (SvFLAGS(sv) & SVf_THINKFIRST) | |
717 | ||
718 | #define SvPADBUSY(sv) (SvFLAGS(sv) & SVs_PADBUSY) | |
719 | ||
720 | #define SvPADTMP(sv) (SvFLAGS(sv) & SVs_PADTMP) | |
721 | #define SvPADTMP_on(sv) (SvFLAGS(sv) |= SVs_PADTMP|SVs_PADBUSY) | |
722 | #define SvPADTMP_off(sv) (SvFLAGS(sv) &= ~SVs_PADTMP) | |
723 | ||
724 | #define SvPADMY(sv) (SvFLAGS(sv) & SVs_PADMY) | |
725 | #define SvPADMY_on(sv) (SvFLAGS(sv) |= SVs_PADMY|SVs_PADBUSY) | |
726 | ||
727 | #define SvTEMP(sv) (SvFLAGS(sv) & SVs_TEMP) | |
728 | #define SvTEMP_on(sv) (SvFLAGS(sv) |= SVs_TEMP) | |
729 | #define SvTEMP_off(sv) (SvFLAGS(sv) &= ~SVs_TEMP) | |
730 | ||
731 | #define SvOBJECT(sv) (SvFLAGS(sv) & SVs_OBJECT) | |
732 | #define SvOBJECT_on(sv) (SvFLAGS(sv) |= SVs_OBJECT) | |
733 | #define SvOBJECT_off(sv) (SvFLAGS(sv) &= ~SVs_OBJECT) | |
734 | ||
735 | #define SvREADONLY(sv) (SvFLAGS(sv) & SVf_READONLY) | |
736 | #define SvREADONLY_on(sv) (SvFLAGS(sv) |= SVf_READONLY) | |
737 | #define SvREADONLY_off(sv) (SvFLAGS(sv) &= ~SVf_READONLY) | |
738 | ||
739 | #define SvSCREAM(sv) (SvFLAGS(sv) & SVp_SCREAM) | |
740 | #define SvSCREAM_on(sv) (SvFLAGS(sv) |= SVp_SCREAM) | |
741 | #define SvSCREAM_off(sv) (SvFLAGS(sv) &= ~SVp_SCREAM) | |
742 | ||
743 | #define SvCOMPILED(sv) (SvFLAGS(sv) & SVpfm_COMPILED) | |
744 | #define SvCOMPILED_on(sv) (SvFLAGS(sv) |= SVpfm_COMPILED) | |
745 | #define SvCOMPILED_off(sv) (SvFLAGS(sv) &= ~SVpfm_COMPILED) | |
746 | ||
747 | #define SvEVALED(sv) (SvFLAGS(sv) & SVrepl_EVAL) | |
748 | #define SvEVALED_on(sv) (SvFLAGS(sv) |= SVrepl_EVAL) | |
749 | #define SvEVALED_off(sv) (SvFLAGS(sv) &= ~SVrepl_EVAL) | |
750 | ||
751 | #define SvTAIL(sv) (SvFLAGS(sv) & SVpbm_TAIL) | |
752 | #define SvTAIL_on(sv) (SvFLAGS(sv) |= SVpbm_TAIL) | |
753 | #define SvTAIL_off(sv) (SvFLAGS(sv) &= ~SVpbm_TAIL) | |
754 | ||
755 | #define SvVALID(sv) (SvFLAGS(sv) & SVpbm_VALID) | |
756 | #define SvVALID_on(sv) (SvFLAGS(sv) |= SVpbm_VALID) | |
757 | #define SvVALID_off(sv) (SvFLAGS(sv) &= ~SVpbm_VALID) | |
758 | ||
759 | #ifdef USE_ITHREADS | |
760 | /* The following uses the FAKE flag to show that a regex pointer is infact | |
761 | its own offset in the regexpad for ithreads */ | |
762 | #define SvREPADTMP(sv) (SvFLAGS(sv) & SVf_FAKE) | |
763 | #define SvREPADTMP_on(sv) (SvFLAGS(sv) |= SVf_FAKE) | |
764 | #define SvREPADTMP_off(sv) (SvFLAGS(sv) &= ~SVf_FAKE) | |
765 | #endif | |
766 | ||
767 | #define SvRV(sv) ((XRV*) SvANY(sv))->xrv_rv | |
768 | #define SvRVx(sv) SvRV(sv) | |
769 | ||
770 | #define SvIVX(sv) ((XPVIV*) SvANY(sv))->xiv_iv | |
771 | #define SvUVX(sv) ((XPVUV*) SvANY(sv))->xuv_uv | |
772 | #define SvNVX(sv) ((XPVNV*)SvANY(sv))->xnv_nv | |
773 | #define SvPVX(sv) ((XPV*) SvANY(sv))->xpv_pv | |
774 | /* Given that these two are new, there can't be any existing code using them | |
775 | * as LVALUEs */ | |
776 | #define SvPVX_mutable(sv) (0 + SvPVX(sv)) | |
777 | #define SvPVX_const(sv) ((const char*) (0 + SvPVX(sv))) | |
778 | #define SvCUR(sv) ((XPV*) SvANY(sv))->xpv_cur | |
779 | #define SvLEN(sv) ((XPV*) SvANY(sv))->xpv_len | |
780 | #define SvEND(sv)(((XPV*) SvANY(sv))->xpv_pv + ((XPV*)SvANY(sv))->xpv_cur) | |
781 | ||
782 | #define SvIVXx(sv) SvIVX(sv) | |
783 | #define SvUVXx(sv) SvUVX(sv) | |
784 | #define SvNVXx(sv) SvNVX(sv) | |
785 | #define SvPVXx(sv) SvPVX(sv) | |
786 | #define SvLENx(sv) SvLEN(sv) | |
787 | #define SvENDx(sv) ((PL_Sv = (sv)), SvEND(PL_Sv)) | |
788 | #define SvMAGIC(sv) ((XPVMG*) SvANY(sv))->xmg_magic | |
789 | #define SvSTASH(sv) ((XPVMG*) SvANY(sv))->xmg_stash | |
790 | ||
791 | /* Ask a scalar nicely to try to become an IV, if possible. | |
792 | Not guaranteed to stay returning void */ | |
793 | /* Macro won't actually call sv_2iv if already IOK */ | |
794 | #define SvIV_please(sv) \ | |
795 | STMT_START {if (!SvIOKp(sv) && (SvNOK(sv) || SvPOK(sv))) \ | |
796 | (void) SvIV(sv); } STMT_END | |
797 | /* Put the asserts back at some point and figure out where they reveal bugs | |
798 | */ | |
799 | #define SvIV_set(sv, val) \ | |
800 | STMT_START { assert(SvTYPE(sv) == SVt_IV || SvTYPE(sv) >= SVt_PVIV); \ | |
801 | (((XPVIV*) SvANY(sv))->xiv_iv = (val)); } STMT_END | |
802 | #define SvNV_set(sv, val) \ | |
803 | STMT_START { assert(SvTYPE(sv) == SVt_NV || SvTYPE(sv) >= SVt_PVNV); \ | |
804 | (((XPVNV*)SvANY(sv))->xnv_nv = (val)); } STMT_END | |
805 | /* assert(SvTYPE(sv) >= SVt_PV); */ | |
806 | #define SvPV_set(sv, val) \ | |
807 | STMT_START { \ | |
808 | (((XPV*) SvANY(sv))->xpv_pv = (val)); } STMT_END | |
809 | /* assert(SvTYPE(sv) == SVt_IV || SvTYPE(sv) >= SVt_PVIV); */ | |
810 | #define SvUV_set(sv, val) \ | |
811 | STMT_START { \ | |
812 | (((XPVUV*)SvANY(sv))->xuv_uv = (val)); } STMT_END | |
813 | /* assert(SvTYPE(sv) >= SVt_RV); */ | |
814 | #define SvRV_set(sv, val) \ | |
815 | STMT_START { \ | |
816 | (((XRV*)SvANY(sv))->xrv_rv = (val)); } STMT_END | |
817 | /* assert(SvTYPE(sv) >= SVt_PVMG); */ | |
818 | #define SvMAGIC_set(sv, val) \ | |
819 | STMT_START { \ | |
820 | (((XPVMG*)SvANY(sv))->xmg_magic = (val)); } STMT_END | |
821 | /* assert(SvTYPE(sv) >= SVt_PVMG); */ | |
822 | #define SvSTASH_set(sv, val) \ | |
823 | STMT_START { \ | |
824 | (((XPVMG*) SvANY(sv))->xmg_stash = (val)); } STMT_END | |
825 | /* assert(SvTYPE(sv) >= SVt_PV); */ | |
826 | #define SvCUR_set(sv, val) \ | |
827 | STMT_START { \ | |
828 | (((XPV*) SvANY(sv))->xpv_cur = (val)); } STMT_END | |
829 | /* assert(SvTYPE(sv) >= SVt_PV); */ | |
830 | #define SvLEN_set(sv, val) \ | |
831 | STMT_START { \ | |
832 | (((XPV*) SvANY(sv))->xpv_len = (val)); } STMT_END | |
833 | #define SvEND_set(sv, val) \ | |
834 | STMT_START { assert(SvTYPE(sv) >= SVt_PV); \ | |
835 | (SvCUR(sv) = (val) - SvPVX(sv)); } STMT_END | |
836 | ||
837 | #define SvPV_renew(sv,n) \ | |
838 | STMT_START { SvLEN_set(sv, n); \ | |
839 | SvPV_set((sv), (MEM_WRAP_CHECK_(n,char) \ | |
840 | (char*)saferealloc((Malloc_t)SvPVX(sv), \ | |
841 | (MEM_SIZE)((n))))); \ | |
842 | } STMT_END | |
843 | ||
844 | #define SvPV_shrink_to_cur(sv) STMT_START { \ | |
845 | const STRLEN _lEnGtH = SvCUR(sv) + 1; \ | |
846 | SvPV_renew(sv, _lEnGtH); \ | |
847 | } STMT_END | |
848 | ||
849 | #define SvPV_free(sv) \ | |
850 | STMT_START { assert(SvTYPE(sv) >= SVt_PV); \ | |
851 | if (SvLEN(sv)) { \ | |
852 | if(SvOOK(sv)) { \ | |
853 | Safefree(SvPVX(sv) - SvIVX(sv)); \ | |
854 | SvFLAGS(sv) &= ~SVf_OOK; \ | |
855 | } else { \ | |
856 | Safefree(SvPVX(sv)); \ | |
857 | } \ | |
858 | } \ | |
859 | } STMT_END | |
860 | ||
861 | #define BmRARE(sv) ((XPVBM*) SvANY(sv))->xbm_rare | |
862 | #define BmUSEFUL(sv) ((XPVBM*) SvANY(sv))->xbm_useful | |
863 | #define BmPREVIOUS(sv) ((XPVBM*) SvANY(sv))->xbm_previous | |
864 | ||
865 | #define FmLINES(sv) ((XPVFM*) SvANY(sv))->xfm_lines | |
866 | ||
867 | #define LvTYPE(sv) ((XPVLV*) SvANY(sv))->xlv_type | |
868 | #define LvTARG(sv) ((XPVLV*) SvANY(sv))->xlv_targ | |
869 | #define LvTARGOFF(sv) ((XPVLV*) SvANY(sv))->xlv_targoff | |
870 | #define LvTARGLEN(sv) ((XPVLV*) SvANY(sv))->xlv_targlen | |
871 | ||
872 | #define IoIFP(sv) ((XPVIO*) SvANY(sv))->xio_ifp | |
873 | #define IoOFP(sv) ((XPVIO*) SvANY(sv))->xio_ofp | |
874 | #define IoDIRP(sv) ((XPVIO*) SvANY(sv))->xio_dirp | |
875 | #define IoANY(sv) ((XPVIO*) SvANY(sv))->xio_any | |
876 | #define IoLINES(sv) ((XPVIO*) SvANY(sv))->xio_lines | |
877 | #define IoPAGE(sv) ((XPVIO*) SvANY(sv))->xio_page | |
878 | #define IoPAGE_LEN(sv) ((XPVIO*) SvANY(sv))->xio_page_len | |
879 | #define IoLINES_LEFT(sv)((XPVIO*) SvANY(sv))->xio_lines_left | |
880 | #define IoTOP_NAME(sv) ((XPVIO*) SvANY(sv))->xio_top_name | |
881 | #define IoTOP_GV(sv) ((XPVIO*) SvANY(sv))->xio_top_gv | |
882 | #define IoFMT_NAME(sv) ((XPVIO*) SvANY(sv))->xio_fmt_name | |
883 | #define IoFMT_GV(sv) ((XPVIO*) SvANY(sv))->xio_fmt_gv | |
884 | #define IoBOTTOM_NAME(sv)((XPVIO*) SvANY(sv))->xio_bottom_name | |
885 | #define IoBOTTOM_GV(sv) ((XPVIO*) SvANY(sv))->xio_bottom_gv | |
886 | #define IoSUBPROCESS(sv)((XPVIO*) SvANY(sv))->xio_subprocess | |
887 | #define IoTYPE(sv) ((XPVIO*) SvANY(sv))->xio_type | |
888 | #define IoFLAGS(sv) ((XPVIO*) SvANY(sv))->xio_flags | |
889 | ||
890 | /* IoTYPE(sv) is a single character telling the type of I/O connection. */ | |
891 | #define IoTYPE_RDONLY '<' | |
892 | #define IoTYPE_WRONLY '>' | |
893 | #define IoTYPE_RDWR '+' | |
894 | #define IoTYPE_APPEND 'a' | |
895 | #define IoTYPE_PIPE '|' | |
896 | #define IoTYPE_STD '-' /* stdin or stdout */ | |
897 | #define IoTYPE_SOCKET 's' | |
898 | #define IoTYPE_CLOSED ' ' | |
899 | #define IoTYPE_IMPLICIT 'I' /* stdin or stdout or stderr */ | |
900 | #define IoTYPE_NUMERIC '#' /* fdopen */ | |
901 | ||
902 | /* | |
903 | =for apidoc Am|bool|SvTAINTED|SV* sv | |
904 | Checks to see if an SV is tainted. Returns TRUE if it is, FALSE if | |
905 | not. | |
906 | ||
907 | =for apidoc Am|void|SvTAINTED_on|SV* sv | |
908 | Marks an SV as tainted if tainting is enabled. | |
909 | ||
910 | =for apidoc Am|void|SvTAINTED_off|SV* sv | |
911 | Untaints an SV. Be I<very> careful with this routine, as it short-circuits | |
912 | some of Perl's fundamental security features. XS module authors should not | |
913 | use this function unless they fully understand all the implications of | |
914 | unconditionally untainting the value. Untainting should be done in the | |
915 | standard perl fashion, via a carefully crafted regexp, rather than directly | |
916 | untainting variables. | |
917 | ||
918 | =for apidoc Am|void|SvTAINT|SV* sv | |
919 | Taints an SV if tainting is enabled. | |
920 | ||
921 | =cut | |
922 | */ | |
923 | ||
924 | #define SvTAINTED(sv) (SvMAGICAL(sv) && sv_tainted(sv)) | |
925 | #define SvTAINTED_on(sv) STMT_START{ if(PL_tainting){sv_taint(sv);} }STMT_END | |
926 | #define SvTAINTED_off(sv) STMT_START{ if(PL_tainting){sv_untaint(sv);} }STMT_END | |
927 | ||
928 | #define SvTAINT(sv) \ | |
929 | STMT_START { \ | |
930 | if (PL_tainting) { \ | |
931 | if (PL_tainted) \ | |
932 | SvTAINTED_on(sv); \ | |
933 | } \ | |
934 | } STMT_END | |
935 | ||
936 | /* | |
937 | =for apidoc Am|char*|SvPV_force|SV* sv|STRLEN len | |
938 | Like C<SvPV> but will force the SV into containing just a string | |
939 | (C<SvPOK_only>). You want force if you are going to update the C<SvPVX> | |
940 | directly. | |
941 | ||
942 | =for apidoc Am|char*|SvPV_force_nomg|SV* sv|STRLEN len | |
943 | Like C<SvPV> but will force the SV into containing just a string | |
944 | (C<SvPOK_only>). You want force if you are going to update the C<SvPVX> | |
945 | directly. Doesn't process magic. | |
946 | ||
947 | =for apidoc Am|char*|SvPV|SV* sv|STRLEN len | |
948 | Returns a pointer to the string in the SV, or a stringified form of | |
949 | the SV if the SV does not contain a string. The SV may cache the | |
950 | stringified version becoming C<SvPOK>. Handles 'get' magic. See also | |
951 | C<SvPVx> for a version which guarantees to evaluate sv only once. | |
952 | ||
953 | =for apidoc Am|char*|SvPVx|SV* sv|STRLEN len | |
954 | A version of C<SvPV> which guarantees to evaluate sv only once. | |
955 | ||
956 | =for apidoc Am|char*|SvPV_nolen|SV* sv | |
957 | Returns a pointer to the string in the SV, or a stringified form of | |
958 | the SV if the SV does not contain a string. The SV may cache the | |
959 | stringified form becoming C<SvPOK>. Handles 'get' magic. | |
960 | ||
961 | =for apidoc Am|IV|SvIV|SV* sv | |
962 | Coerces the given SV to an integer and returns it. See C<SvIVx> for a | |
963 | version which guarantees to evaluate sv only once. | |
964 | ||
965 | =for apidoc Am|IV|SvIVx|SV* sv | |
966 | Coerces the given SV to an integer and returns it. Guarantees to evaluate | |
967 | sv only once. Use the more efficient C<SvIV> otherwise. | |
968 | ||
969 | =for apidoc Am|NV|SvNV|SV* sv | |
970 | Coerce the given SV to a double and return it. See C<SvNVx> for a version | |
971 | which guarantees to evaluate sv only once. | |
972 | ||
973 | =for apidoc Am|NV|SvNVx|SV* sv | |
974 | Coerces the given SV to a double and returns it. Guarantees to evaluate | |
975 | sv only once. Use the more efficient C<SvNV> otherwise. | |
976 | ||
977 | =for apidoc Am|UV|SvUV|SV* sv | |
978 | Coerces the given SV to an unsigned integer and returns it. See C<SvUVx> | |
979 | for a version which guarantees to evaluate sv only once. | |
980 | ||
981 | =for apidoc Am|UV|SvUVx|SV* sv | |
982 | Coerces the given SV to an unsigned integer and returns it. Guarantees to | |
983 | evaluate sv only once. Use the more efficient C<SvUV> otherwise. | |
984 | ||
985 | =for apidoc Am|bool|SvTRUE|SV* sv | |
986 | Returns a boolean indicating whether Perl would evaluate the SV as true or | |
987 | false, defined or undefined. Does not handle 'get' magic. | |
988 | ||
989 | =for apidoc Am|char*|SvPVutf8_force|SV* sv|STRLEN len | |
990 | Like C<SvPV_force>, but converts sv to utf8 first if necessary. | |
991 | ||
992 | =for apidoc Am|char*|SvPVutf8|SV* sv|STRLEN len | |
993 | Like C<SvPV>, but converts sv to utf8 first if necessary. | |
994 | ||
995 | =for apidoc Am|char*|SvPVutf8_nolen|SV* sv | |
996 | Like C<SvPV_nolen>, but converts sv to utf8 first if necessary. | |
997 | ||
998 | =for apidoc Am|char*|SvPVbyte_force|SV* sv|STRLEN len | |
999 | Like C<SvPV_force>, but converts sv to byte representation first if necessary. | |
1000 | ||
1001 | =for apidoc Am|char*|SvPVbyte|SV* sv|STRLEN len | |
1002 | Like C<SvPV>, but converts sv to byte representation first if necessary. | |
1003 | ||
1004 | =for apidoc Am|char*|SvPVbyte_nolen|SV* sv | |
1005 | Like C<SvPV_nolen>, but converts sv to byte representation first if necessary. | |
1006 | ||
1007 | =for apidoc Am|char*|SvPVutf8x_force|SV* sv|STRLEN len | |
1008 | Like C<SvPV_force>, but converts sv to utf8 first if necessary. | |
1009 | Guarantees to evaluate sv only once; use the more efficient C<SvPVutf8_force> | |
1010 | otherwise. | |
1011 | ||
1012 | =for apidoc Am|char*|SvPVutf8x|SV* sv|STRLEN len | |
1013 | Like C<SvPV>, but converts sv to utf8 first if necessary. | |
1014 | Guarantees to evaluate sv only once; use the more efficient C<SvPVutf8> | |
1015 | otherwise. | |
1016 | ||
1017 | =for apidoc Am|char*|SvPVbytex_force|SV* sv|STRLEN len | |
1018 | Like C<SvPV_force>, but converts sv to byte representation first if necessary. | |
1019 | Guarantees to evaluate sv only once; use the more efficient C<SvPVbyte_force> | |
1020 | otherwise. | |
1021 | ||
1022 | =for apidoc Am|char*|SvPVbytex|SV* sv|STRLEN len | |
1023 | Like C<SvPV>, but converts sv to byte representation first if necessary. | |
1024 | Guarantees to evaluate sv only once; use the more efficient C<SvPVbyte> | |
1025 | otherwise. | |
1026 | ||
1027 | =for apidoc Am|bool|SvIsCOW|SV* sv | |
1028 | Returns a boolean indicating whether the SV is Copy-On-Write. (either shared | |
1029 | hash key scalars, or full Copy On Write scalars if 5.9.0 is configured for | |
1030 | COW) | |
1031 | ||
1032 | =for apidoc Am|bool|SvIsCOW_shared_hash|SV* sv | |
1033 | Returns a boolean indicating whether the SV is Copy-On-Write shared hash key | |
1034 | scalar. | |
1035 | ||
1036 | =for apidoc Am|void|sv_catpvn_nomg|SV* sv|const char* ptr|STRLEN len | |
1037 | Like C<sv_catpvn> but doesn't process magic. | |
1038 | ||
1039 | =for apidoc Am|void|sv_setsv_nomg|SV* dsv|SV* ssv | |
1040 | Like C<sv_setsv> but doesn't process magic. | |
1041 | ||
1042 | =for apidoc Am|void|sv_catsv_nomg|SV* dsv|SV* ssv | |
1043 | Like C<sv_catsv> but doesn't process magic. | |
1044 | ||
1045 | =cut | |
1046 | */ | |
1047 | ||
1048 | /* Let us hope that bitmaps for UV and IV are the same */ | |
1049 | #define SvIV(sv) (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | |
1050 | #define SvUV(sv) (SvIOK(sv) ? SvUVX(sv) : sv_2uv(sv)) | |
1051 | #define SvNV(sv) (SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)) | |
1052 | ||
1053 | /* ----*/ | |
1054 | ||
1055 | #define SvPV(sv, lp) SvPV_flags(sv, lp, SV_GMAGIC) | |
1056 | #define SvPV_const(sv, lp) SvPV_flags_const(sv, lp, SV_GMAGIC) | |
1057 | #define SvPV_mutable(sv, lp) SvPV_flags_mutable(sv, lp, SV_GMAGIC) | |
1058 | ||
1059 | #define SvPV_flags(sv, lp, flags) \ | |
1060 | ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \ | |
1061 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pv_flags(sv, &lp, flags)) | |
1062 | #define SvPV_flags_const(sv, lp, flags) \ | |
1063 | ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \ | |
1064 | ? ((lp = SvCUR(sv)), SvPVX_const(sv)) : \ | |
1065 | (const char*) sv_2pv_flags(sv, &lp, flags|SV_CONST_RETURN)) | |
1066 | #define SvPV_flags_const_nolen(sv, flags) \ | |
1067 | ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \ | |
1068 | ? SvPVX_const(sv) : \ | |
1069 | (const char*) sv_2pv_flags(sv, 0, flags|SV_CONST_RETURN)) | |
1070 | #define SvPV_flags_mutable(sv, lp, flags) \ | |
1071 | ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \ | |
1072 | ? ((lp = SvCUR(sv)), SvPVX_mutable(sv)) : \ | |
1073 | sv_2pv_flags(sv, &lp, flags|SV_MUTABLE_RETURN)) | |
1074 | ||
1075 | #define SvPV_force(sv, lp) SvPV_force_flags(sv, lp, SV_GMAGIC) | |
1076 | #define SvPV_force_nolen(sv) SvPV_force_flags_nolen(sv, SV_GMAGIC) | |
1077 | #define SvPV_force_mutable(sv, lp) SvPV_force_flags_mutable(sv, lp, SV_GMAGIC) | |
1078 | ||
1079 | #define SvPV_force_nomg(sv, lp) SvPV_force_flags(sv, lp, 0) | |
1080 | #define SvPV_force_nomg_nolen(sv) SvPV_force_flags_nolen(sv, 0) | |
1081 | ||
1082 | #define SvPV_force_flags(sv, lp, flags) \ | |
1083 | ((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST)) == SVf_POK \ | |
1084 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvn_force_flags(sv, &lp, flags)) | |
1085 | #define SvPV_force_flags_nolen(sv, flags) \ | |
1086 | ((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST)) == SVf_POK \ | |
1087 | ? SvPVX(sv) : sv_pvn_force_flags(sv, 0, flags)) | |
1088 | #define SvPV_force_flags_mutable(sv, lp, flags) \ | |
1089 | ((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST)) == SVf_POK \ | |
1090 | ? ((lp = SvCUR(sv)), SvPVX_mutable(sv)) \ | |
1091 | : sv_pvn_force_flags(sv, &lp, flags|SV_MUTABLE_RETURN)) | |
1092 | ||
1093 | #define SvPV_nolen(sv) \ | |
1094 | ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \ | |
1095 | ? SvPVX(sv) : sv_2pv_flags(sv, 0, SV_GMAGIC)) | |
1096 | ||
1097 | #define SvPV_nolen_const(sv) \ | |
1098 | ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \ | |
1099 | ? SvPVX_const(sv) : sv_2pv_flags(sv, 0, SV_GMAGIC|SV_CONST_RETURN)) | |
1100 | ||
1101 | #define SvPV_nomg(sv, lp) SvPV_flags(sv, lp, 0) | |
1102 | #define SvPV_nomg_const(sv, lp) SvPV_flags_const(sv, lp, 0) | |
1103 | #define SvPV_nomg_const_nolen(sv) SvPV_flags_const_nolen(sv, 0) | |
1104 | ||
1105 | /* ----*/ | |
1106 | ||
1107 | #define SvPVutf8(sv, lp) \ | |
1108 | ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK|SVf_UTF8) \ | |
1109 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pvutf8(sv, &lp)) | |
1110 | ||
1111 | #define SvPVutf8_force(sv, lp) \ | |
1112 | ((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST)) == (SVf_POK|SVf_UTF8) \ | |
1113 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvutf8n_force(sv, &lp)) | |
1114 | ||
1115 | ||
1116 | #define SvPVutf8_nolen(sv) \ | |
1117 | ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK|SVf_UTF8)\ | |
1118 | ? SvPVX(sv) : sv_2pvutf8(sv, 0)) | |
1119 | ||
1120 | /* ----*/ | |
1121 | ||
1122 | #define SvPVbyte(sv, lp) \ | |
1123 | ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK) \ | |
1124 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pvbyte(sv, &lp)) | |
1125 | ||
1126 | #define SvPVbyte_force(sv, lp) \ | |
1127 | ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVf_THINKFIRST)) == (SVf_POK) \ | |
1128 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvbyten_force(sv, &lp)) | |
1129 | ||
1130 | #define SvPVbyte_nolen(sv) \ | |
1131 | ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK)\ | |
1132 | ? SvPVX(sv) : sv_2pvbyte(sv, 0)) | |
1133 | ||
1134 | ||
1135 | ||
1136 | /* define FOOx(): idempotent versions of FOO(). If possible, use a local | |
1137 | * var to evaluate the arg once; failing that, use a global if possible; | |
1138 | * failing that, call a function to do the work | |
1139 | */ | |
1140 | ||
1141 | #define SvPVx_force(sv, lp) sv_pvn_force(sv, &lp) | |
1142 | #define SvPVutf8x_force(sv, lp) sv_pvutf8n_force(sv, &lp) | |
1143 | #define SvPVbytex_force(sv, lp) sv_pvbyten_force(sv, &lp) | |
1144 | ||
1145 | #if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) | |
1146 | ||
1147 | # define SvIVx(sv) ({SV *_sv = (SV*)(sv); SvIV(_sv); }) | |
1148 | # define SvUVx(sv) ({SV *_sv = (SV*)(sv); SvUV(_sv); }) | |
1149 | # define SvNVx(sv) ({SV *_sv = (SV*)(sv); SvNV(_sv); }) | |
1150 | # define SvPVx(sv, lp) ({SV *_sv = (sv); SvPV(_sv, lp); }) | |
1151 | # define SvPVx_const(sv, lp) ({SV *_sv = (sv); SvPV_const(_sv, lp); }) | |
1152 | # define SvPVx_nolen(sv) ({SV *_sv = (sv); SvPV_nolen(_sv); }) | |
1153 | # define SvPVx_nolen_const(sv) ({SV *_sv = (sv); SvPV_nolen_const(_sv); }) | |
1154 | # define SvPVutf8x(sv, lp) ({SV *_sv = (sv); SvPVutf8(_sv, lp); }) | |
1155 | # define SvPVbytex(sv, lp) ({SV *_sv = (sv); SvPVbyte(_sv, lp); }) | |
1156 | # define SvPVbytex_nolen(sv) ({SV *_sv = (sv); SvPVbyte_nolen(_sv); }) | |
1157 | # define SvTRUE(sv) ( \ | |
1158 | !sv \ | |
1159 | ? 0 \ | |
1160 | : SvPOK(sv) \ | |
1161 | ? (({XPV *nxpv = (XPV*)SvANY(sv); \ | |
1162 | nxpv && \ | |
1163 | (nxpv->xpv_cur > 1 || \ | |
1164 | (nxpv->xpv_cur && *nxpv->xpv_pv != '0')); }) \ | |
1165 | ? 1 \ | |
1166 | : 0) \ | |
1167 | : \ | |
1168 | SvIOK(sv) \ | |
1169 | ? SvIVX(sv) != 0 \ | |
1170 | : SvNOK(sv) \ | |
1171 | ? SvNVX(sv) != 0.0 \ | |
1172 | : sv_2bool(sv) ) | |
1173 | # define SvTRUEx(sv) ({SV *_sv = (sv); SvTRUE(_sv); }) | |
1174 | ||
1175 | #else /* __GNUC__ */ | |
1176 | ||
1177 | # ifdef USE_5005THREADS | |
1178 | # define SvIVx(sv) sv_iv(sv) | |
1179 | # define SvUVx(sv) sv_uv(sv) | |
1180 | # define SvNVx(sv) sv_nv(sv) | |
1181 | # define SvPVx(sv, lp) sv_pvn(sv, &lp) | |
1182 | # define SvPVutf8x(sv, lp) sv_pvutf8n(sv, &lp) | |
1183 | # define SvPVbytex(sv, lp) sv_pvbyten(sv, &lp) | |
1184 | # define SvTRUE(sv) SvTRUEx(sv) | |
1185 | # define SvTRUEx(sv) sv_true(sv) | |
1186 | ||
1187 | # else /* USE_5005THREADS */ | |
1188 | ||
1189 | /* These inlined macros use globals, which will require a thread | |
1190 | * declaration in user code, so we avoid them under threads */ | |
1191 | ||
1192 | # define SvIVx(sv) ((PL_Sv = (sv)), SvIV(PL_Sv)) | |
1193 | # define SvUVx(sv) ((PL_Sv = (sv)), SvUV(PL_Sv)) | |
1194 | # define SvNVx(sv) ((PL_Sv = (sv)), SvNV(PL_Sv)) | |
1195 | # define SvPVx(sv, lp) ((PL_Sv = (sv)), SvPV(PL_Sv, lp)) | |
1196 | # define SvPVx_const(sv, lp) ((PL_Sv = (sv)), SvPV_const(PL_Sv, lp)) | |
1197 | # define SvPVx_nolen(sv) ((PL_Sv = (sv)), SvPV_nolen(PL_Sv)) | |
1198 | # define SvPVx_nolen_const(sv) ((PL_Sv = (sv)), SvPV_nolen_const(PL_Sv)) | |
1199 | # define SvPVutf8x(sv, lp) ((PL_Sv = (sv)), SvPVutf8(PL_Sv, lp)) | |
1200 | # define SvPVbytex(sv, lp) ((PL_Sv = (sv)), SvPVbyte(PL_Sv, lp)) | |
1201 | # define SvPVbytex_nolen(sv) ((PL_Sv = (sv)), SvPVbyte_nolen(PL_Sv)) | |
1202 | # define SvTRUE(sv) ( \ | |
1203 | !sv \ | |
1204 | ? 0 \ | |
1205 | : SvPOK(sv) \ | |
1206 | ? ((PL_Xpv = (XPV*)SvANY(sv)) && \ | |
1207 | (PL_Xpv->xpv_cur > 1 || \ | |
1208 | (PL_Xpv->xpv_cur && *PL_Xpv->xpv_pv != '0')) \ | |
1209 | ? 1 \ | |
1210 | : 0) \ | |
1211 | : \ | |
1212 | SvIOK(sv) \ | |
1213 | ? SvIVX(sv) != 0 \ | |
1214 | : SvNOK(sv) \ | |
1215 | ? SvNVX(sv) != 0.0 \ | |
1216 | : sv_2bool(sv) ) | |
1217 | # define SvTRUEx(sv) ((PL_Sv = (sv)), SvTRUE(PL_Sv)) | |
1218 | # endif /* USE_5005THREADS */ | |
1219 | #endif /* __GNU__ */ | |
1220 | ||
1221 | #define SvIsCOW(sv) ((SvFLAGS(sv) & (SVf_FAKE | SVf_READONLY)) == \ | |
1222 | (SVf_FAKE | SVf_READONLY)) | |
1223 | #define SvIsCOW_shared_hash(sv) (SvIsCOW(sv) && SvLEN(sv) == 0) | |
1224 | ||
1225 | #define SvSHARED_HASH(sv) (0 + SvUVX(sv)) | |
1226 | ||
1227 | /* flag values for sv_*_flags functions */ | |
1228 | #define SV_IMMEDIATE_UNREF 1 | |
1229 | #define SV_GMAGIC 2 | |
1230 | #define SV_COW_DROP_PV 4 /* Unused in Perl 5.8.x */ | |
1231 | #define SV_UTF8_NO_ENCODING 8 | |
1232 | #define SV_NOSTEAL 16 | |
1233 | #define SV_CONST_RETURN 32 | |
1234 | #define SV_MUTABLE_RETURN 64 | |
1235 | ||
1236 | /* all these 'functions' are now just macros */ | |
1237 | ||
1238 | #define sv_pv(sv) SvPV_nolen(sv) | |
1239 | #define sv_pvutf8(sv) SvPVutf8_nolen(sv) | |
1240 | #define sv_pvbyte(sv) SvPVbyte_nolen(sv) | |
1241 | ||
1242 | #define sv_pvn_force_nomg(sv, lp) sv_pvn_force_flags(sv, lp, 0) | |
1243 | #define sv_utf8_upgrade_nomg(sv) sv_utf8_upgrade_flags(sv, 0) | |
1244 | #define sv_catpvn_nomg(dsv, sstr, slen) sv_catpvn_flags(dsv, sstr, slen, 0) | |
1245 | #define sv_setsv(dsv, ssv) sv_setsv_flags(dsv, ssv, SV_GMAGIC) | |
1246 | #define sv_setsv_nomg(dsv, ssv) sv_setsv_flags(dsv, ssv, 0) | |
1247 | #define sv_catsv(dsv, ssv) sv_catsv_flags(dsv, ssv, SV_GMAGIC) | |
1248 | #define sv_catsv_nomg(dsv, ssv) sv_catsv_flags(dsv, ssv, 0) | |
1249 | #define sv_catpvn(dsv, sstr, slen) sv_catpvn_flags(dsv, sstr, slen, SV_GMAGIC) | |
1250 | #define sv_2pv(sv, lp) sv_2pv_flags(sv, lp, SV_GMAGIC) | |
1251 | #define sv_2pv_nomg(sv, lp) sv_2pv_flags(sv, lp, 0) | |
1252 | #define sv_pvn_force(sv, lp) sv_pvn_force_flags(sv, lp, SV_GMAGIC) | |
1253 | #define sv_utf8_upgrade(sv) sv_utf8_upgrade_flags(sv, SV_GMAGIC) | |
1254 | ||
1255 | /* Should be named SvCatPVN_utf8_upgrade? */ | |
1256 | #define sv_catpvn_utf8_upgrade(dsv, sstr, slen, nsv) \ | |
1257 | STMT_START { \ | |
1258 | if (!(nsv)) \ | |
1259 | nsv = sv_2mortal(newSVpvn(sstr, slen)); \ | |
1260 | else \ | |
1261 | sv_setpvn(nsv, sstr, slen); \ | |
1262 | SvUTF8_off(nsv); \ | |
1263 | sv_utf8_upgrade(nsv); \ | |
1264 | sv_catsv(dsv, nsv); \ | |
1265 | } STMT_END | |
1266 | ||
1267 | /* | |
1268 | =for apidoc Am|SV*|newRV_inc|SV* sv | |
1269 | ||
1270 | Creates an RV wrapper for an SV. The reference count for the original SV is | |
1271 | incremented. | |
1272 | ||
1273 | =cut | |
1274 | */ | |
1275 | ||
1276 | #define newRV_inc(sv) newRV(sv) | |
1277 | ||
1278 | /* the following macros update any magic values this sv is associated with */ | |
1279 | ||
1280 | /* | |
1281 | =head1 Magical Functions | |
1282 | ||
1283 | =for apidoc Am|void|SvGETMAGIC|SV* sv | |
1284 | Invokes C<mg_get> on an SV if it has 'get' magic. This macro evaluates its | |
1285 | argument more than once. | |
1286 | ||
1287 | =for apidoc Am|void|SvSETMAGIC|SV* sv | |
1288 | Invokes C<mg_set> on an SV if it has 'set' magic. This macro evaluates its | |
1289 | argument more than once. | |
1290 | ||
1291 | =for apidoc Am|void|SvSetSV|SV* dsb|SV* ssv | |
1292 | Calls C<sv_setsv> if dsv is not the same as ssv. May evaluate arguments | |
1293 | more than once. | |
1294 | ||
1295 | =for apidoc Am|void|SvSetSV_nosteal|SV* dsv|SV* ssv | |
1296 | Calls a non-destructive version of C<sv_setsv> if dsv is not the same as | |
1297 | ssv. May evaluate arguments more than once. | |
1298 | ||
1299 | =for apidoc Am|void|SvSetMagicSV|SV* dsb|SV* ssv | |
1300 | Like C<SvSetSV>, but does any set magic required afterwards. | |
1301 | ||
1302 | =for apidoc Am|void|SvSetMagicSV_nosteal|SV* dsv|SV* ssv | |
1303 | Like C<SvSetSV_nosteal>, but does any set magic required afterwards. | |
1304 | ||
1305 | =for apidoc Am|void|SvSHARE|SV* sv | |
1306 | Arranges for sv to be shared between threads if a suitable module | |
1307 | has been loaded. | |
1308 | ||
1309 | =for apidoc Am|void|SvLOCK|SV* sv | |
1310 | Arranges for a mutual exclusion lock to be obtained on sv if a suitable module | |
1311 | has been loaded. | |
1312 | ||
1313 | =for apidoc Am|void|SvUNLOCK|SV* sv | |
1314 | Releases a mutual exclusion lock on sv if a suitable module | |
1315 | has been loaded. | |
1316 | ||
1317 | =head1 SV Manipulation Functions | |
1318 | ||
1319 | =for apidoc Am|char *|SvGROW|SV* sv|STRLEN len | |
1320 | Expands the character buffer in the SV so that it has room for the | |
1321 | indicated number of bytes (remember to reserve space for an extra trailing | |
1322 | NUL character). Calls C<sv_grow> to perform the expansion if necessary. | |
1323 | Returns a pointer to the character buffer. | |
1324 | ||
1325 | =cut | |
1326 | */ | |
1327 | ||
1328 | #define SvSHARE(sv) CALL_FPTR(PL_sharehook)(aTHX_ sv) | |
1329 | #define SvLOCK(sv) CALL_FPTR(PL_lockhook)(aTHX_ sv) | |
1330 | #define SvUNLOCK(sv) CALL_FPTR(PL_unlockhook)(aTHX_ sv) | |
1331 | ||
1332 | #define SvGETMAGIC(x) STMT_START { if (SvGMAGICAL(x)) mg_get(x); } STMT_END | |
1333 | #define SvSETMAGIC(x) STMT_START { if (SvSMAGICAL(x)) mg_set(x); } STMT_END | |
1334 | ||
1335 | #define SvSetSV_and(dst,src,finally) \ | |
1336 | STMT_START { \ | |
1337 | if ((dst) != (src)) { \ | |
1338 | sv_setsv(dst, src); \ | |
1339 | finally; \ | |
1340 | } \ | |
1341 | } STMT_END | |
1342 | #define SvSetSV_nosteal_and(dst,src,finally) \ | |
1343 | STMT_START { \ | |
1344 | if ((dst) != (src)) { \ | |
1345 | sv_setsv_flags(dst, src, SV_GMAGIC | SV_NOSTEAL); \ | |
1346 | finally; \ | |
1347 | } \ | |
1348 | } STMT_END | |
1349 | ||
1350 | #define SvSetSV(dst,src) \ | |
1351 | SvSetSV_and(dst,src,/*nothing*/;) | |
1352 | #define SvSetSV_nosteal(dst,src) \ | |
1353 | SvSetSV_nosteal_and(dst,src,/*nothing*/;) | |
1354 | ||
1355 | #define SvSetMagicSV(dst,src) \ | |
1356 | SvSetSV_and(dst,src,SvSETMAGIC(dst)) | |
1357 | #define SvSetMagicSV_nosteal(dst,src) \ | |
1358 | SvSetSV_nosteal_and(dst,src,SvSETMAGIC(dst)) | |
1359 | ||
1360 | ||
1361 | #if !defined(SKIP_DEBUGGING) | |
1362 | #define SvPEEK(sv) sv_peek(sv) | |
1363 | #else | |
1364 | #define SvPEEK(sv) "" | |
1365 | #endif | |
1366 | ||
1367 | #define SvIMMORTAL(sv) ((sv)==&PL_sv_undef || (sv)==&PL_sv_yes || (sv)==&PL_sv_no || (sv)==&PL_sv_placeholder) | |
1368 | ||
1369 | #define boolSV(b) ((b) ? &PL_sv_yes : &PL_sv_no) | |
1370 | ||
1371 | #define isGV(sv) (SvTYPE(sv) == SVt_PVGV) | |
1372 | ||
1373 | #define SvGROW(sv,len) (SvLEN(sv) < (len) ? sv_grow(sv,len) : SvPVX(sv)) | |
1374 | #define SvGROW_mutable(sv,len) \ | |
1375 | (SvLEN(sv) < (len) ? sv_grow(sv,len) : SvPVX_mutable(sv)) | |
1376 | #define Sv_Grow sv_grow | |
1377 | ||
1378 | #define CLONEf_COPY_STACKS 1 | |
1379 | #define CLONEf_KEEP_PTR_TABLE 2 | |
1380 | #define CLONEf_CLONE_HOST 4 | |
1381 | #define CLONEf_JOIN_IN 8 | |
1382 | ||
1383 | struct clone_params { | |
1384 | AV* stashes; | |
1385 | UV flags; | |
1386 | PerlInterpreter *proto_perl; | |
1387 | }; | |
1388 | ||
1389 | #define SV_CHECK_THINKFIRST(sv) if (SvTHINKFIRST(sv)) sv_force_normal(sv) |