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a0d0e21e 1/* sv.h
79072805 2 *
eb1102fc 3 * Copyright (c) 1991-2002, Larry Wall
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4 *
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.
7 *
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8 */
9
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10#ifdef sv_flags
11#undef sv_flags /* Convex has this in <signal.h> for sigvec() */
12#endif
13
954c1994 14/*
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15=head1 SV Flags
16
954c1994 17=for apidoc AmU||svtype
8cf8f3d1 18An enum of flags for Perl types. These are found in the file B<sv.h>
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19in the C<svtype> enum. Test these flags with the C<SvTYPE> macro.
20
21=for apidoc AmU||SVt_PV
22Pointer type flag for scalars. See C<svtype>.
23
24=for apidoc AmU||SVt_IV
25Integer type flag for scalars. See C<svtype>.
26
27=for apidoc AmU||SVt_NV
28Double type flag for scalars. See C<svtype>.
29
30=for apidoc AmU||SVt_PVMG
31Type flag for blessed scalars. See C<svtype>.
32
33=for apidoc AmU||SVt_PVAV
34Type flag for arrays. See C<svtype>.
35
36=for apidoc AmU||SVt_PVHV
37Type flag for hashes. See C<svtype>.
38
39=for apidoc AmU||SVt_PVCV
40Type flag for code refs. See C<svtype>.
41
42=cut
43*/
44
79072805 45typedef enum {
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46 SVt_NULL, /* 0 */
47 SVt_IV, /* 1 */
48 SVt_NV, /* 2 */
49 SVt_RV, /* 3 */
50 SVt_PV, /* 4 */
51 SVt_PVIV, /* 5 */
52 SVt_PVNV, /* 6 */
53 SVt_PVMG, /* 7 */
54 SVt_PVBM, /* 8 */
55 SVt_PVLV, /* 9 */
56 SVt_PVAV, /* 10 */
57 SVt_PVHV, /* 11 */
58 SVt_PVCV, /* 12 */
59 SVt_PVGV, /* 13 */
60 SVt_PVFM, /* 14 */
61 SVt_PVIO /* 15 */
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62} svtype;
63
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64/* Using C's structural equivalence to help emulate C++ inheritance here... */
65
5e045b90 66struct STRUCT_SV { /* struct sv { */
463ee0b2 67 void* sv_any; /* pointer to something */
79072805 68 U32 sv_refcnt; /* how many references to us */
8990e307 69 U32 sv_flags; /* what we are */
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70};
71
72struct gv {
463ee0b2 73 XPVGV* sv_any; /* pointer to something */
79072805 74 U32 sv_refcnt; /* how many references to us */
8990e307 75 U32 sv_flags; /* what we are */
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76};
77
78struct cv {
232e078e 79 XPVCV* sv_any; /* pointer to something */
79072805 80 U32 sv_refcnt; /* how many references to us */
8990e307 81 U32 sv_flags; /* what we are */
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82};
83
84struct av {
463ee0b2 85 XPVAV* sv_any; /* pointer to something */
79072805 86 U32 sv_refcnt; /* how many references to us */
8990e307 87 U32 sv_flags; /* what we are */
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88};
89
90struct hv {
463ee0b2 91 XPVHV* sv_any; /* pointer to something */
79072805 92 U32 sv_refcnt; /* how many references to us */
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93 U32 sv_flags; /* what we are */
94};
95
96struct io {
97 XPVIO* sv_any; /* pointer to something */
98 U32 sv_refcnt; /* how many references to us */
99 U32 sv_flags; /* what we are */
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100};
101
954c1994 102/*
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103=head1 SV Manipulation Functions
104
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105=for apidoc Am|U32|SvREFCNT|SV* sv
106Returns the value of the object's reference count.
107
108=for apidoc Am|SV*|SvREFCNT_inc|SV* sv
109Increments the reference count of the given SV.
110
111=for apidoc Am|void|SvREFCNT_dec|SV* sv
112Decrements the reference count of the given SV.
113
114=for apidoc Am|svtype|SvTYPE|SV* sv
115Returns the type of the SV. See C<svtype>.
116
117=for apidoc Am|void|SvUPGRADE|SV* sv|svtype type
118Used to upgrade an SV to a more complex form. Uses C<sv_upgrade> to
119perform the upgrade if necessary. See C<svtype>.
120
121=cut
122*/
123
463ee0b2 124#define SvANY(sv) (sv)->sv_any
79072805 125#define SvFLAGS(sv) (sv)->sv_flags
aeea060c 126#define SvREFCNT(sv) (sv)->sv_refcnt
a863c7d1 127
4d1ff10f 128#ifdef USE_5005THREADS
dce16143 129
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130# if defined(VMS)
131# define ATOMIC_INC(count) __ATOMIC_INCREMENT_LONG(&count)
132# define ATOMIC_DEC_AND_TEST(res,count) res=(1==__ATOMIC_DECREMENT_LONG(&count))
133 # else
134# ifdef EMULATE_ATOMIC_REFCOUNTS
135 # define ATOMIC_INC(count) STMT_START { \
136 MUTEX_LOCK(&PL_svref_mutex); \
137 ++count; \
138 MUTEX_UNLOCK(&PL_svref_mutex); \
139 } STMT_END
140# define ATOMIC_DEC_AND_TEST(res,count) STMT_START { \
141 MUTEX_LOCK(&PL_svref_mutex); \
142 res = (--count == 0); \
143 MUTEX_UNLOCK(&PL_svref_mutex); \
144 } STMT_END
145# else
146# define ATOMIC_INC(count) atomic_inc(&count)
147# define ATOMIC_DEC_AND_TEST(res,count) (res = atomic_dec_and_test(&count))
148# endif /* EMULATE_ATOMIC_REFCOUNTS */
149# endif /* VMS */
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150#else
151# define ATOMIC_INC(count) (++count)
83b0a010 152# define ATOMIC_DEC_AND_TEST(res, count) (res = (--count == 0))
4d1ff10f 153#endif /* USE_5005THREADS */
dce16143 154
a863c7d1 155#ifdef __GNUC__
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156# define SvREFCNT_inc(sv) \
157 ({ \
158 SV *nsv = (SV*)(sv); \
159 if (nsv) \
160 ATOMIC_INC(SvREFCNT(nsv)); \
161 nsv; \
162 })
8990e307 163#else
9ede5bc8 164# ifdef USE_5005THREADS
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165# if defined(VMS) && defined(__ALPHA)
166# define SvREFCNT_inc(sv) \
167 (PL_Sv=(SV*)(sv), (PL_Sv && __ATOMIC_INCREMENT_LONG(&(SvREFCNT(PL_Sv)))), (SV *)PL_Sv)
168# else
169# define SvREFCNT_inc(sv) sv_newref((SV*)sv)
170# endif
a863c7d1 171# else
dce16143 172# define SvREFCNT_inc(sv) \
6b88bc9c 173 ((PL_Sv=(SV*)(sv)), (PL_Sv && ATOMIC_INC(SvREFCNT(PL_Sv))), (SV*)PL_Sv)
a863c7d1 174# endif
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175#endif
176
91f3b821 177#define SvREFCNT_dec(sv) sv_free((SV*)(sv))
a863c7d1 178
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179#define SVTYPEMASK 0xff
180#define SvTYPE(sv) ((sv)->sv_flags & SVTYPEMASK)
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181
182#define SvUPGRADE(sv, mt) (SvTYPE(sv) >= mt || sv_upgrade(sv, mt))
183
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184#define SVs_PADBUSY 0x00000100 /* reserved for tmp or my already */
185#define SVs_PADTMP 0x00000200 /* in use as tmp */
186#define SVs_PADMY 0x00000400 /* in use a "my" variable */
187#define SVs_TEMP 0x00000800 /* string is stealable? */
188#define SVs_OBJECT 0x00001000 /* is "blessed" */
189#define SVs_GMG 0x00002000 /* has magical get method */
190#define SVs_SMG 0x00004000 /* has magical set method */
191#define SVs_RMG 0x00008000 /* has random magical methods */
192
193#define SVf_IOK 0x00010000 /* has valid public integer value */
194#define SVf_NOK 0x00020000 /* has valid public numeric value */
195#define SVf_POK 0x00040000 /* has valid public pointer value */
196#define SVf_ROK 0x00080000 /* has a valid reference pointer */
a0d0e21e 197
748a9306 198#define SVf_FAKE 0x00100000 /* glob or lexical is just a copy */
8990e307 199#define SVf_OOK 0x00200000 /* has valid offset value */
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200#define SVf_BREAK 0x00400000 /* refcnt is artificially low - used
201 * by SV's in final arena cleanup */
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202#define SVf_READONLY 0x00800000 /* may not be modified */
203
a0d0e21e 204
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205#define SVp_IOK 0x01000000 /* has valid non-public integer value */
206#define SVp_NOK 0x02000000 /* has valid non-public numeric value */
207#define SVp_POK 0x04000000 /* has valid non-public pointer value */
208#define SVp_SCREAM 0x08000000 /* has been studied? */
209
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210#define SVf_UTF8 0x20000000 /* SvPVX is UTF-8 encoded */
211
430eacda 212#define SVf_THINKFIRST (SVf_READONLY|SVf_ROK|SVf_FAKE)
5bc28da9 213
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214#define SVf_OK (SVf_IOK|SVf_NOK|SVf_POK|SVf_ROK| \
215 SVp_IOK|SVp_NOK|SVp_POK)
216
9e7bc3e8 217#define SVf_AMAGIC 0x10000000 /* has magical overloaded methods */
a0d0e21e 218
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219#define PRIVSHIFT 8
220
221/* Some private flags. */
222
f472eb5c 223/* SVpad_OUR may be set on SVt_PV{NV,MG,GV} types */
032d6771 224#define SVpad_OUR 0x80000000 /* pad name is "our" instead of "my" */
524189f1 225#define SVpad_TYPED 0x40000000 /* Typed Lexical */
032d6771 226
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227#define SVf_IVisUV 0x80000000 /* use XPVUV instead of XPVIV */
228
229#define SVpfm_COMPILED 0x80000000 /* FORMLINE is compiled */
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230
231#define SVpbm_VALID 0x80000000
bbce6d69 232#define SVpbm_TAIL 0x40000000
8990e307 233
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234#define SVrepl_EVAL 0x40000000 /* Replacement part of s///e */
235
6bfc225d 236#define SVphv_SHAREKEYS 0x20000000 /* keys live on shared string table */
51594c39 237#define SVphv_LAZYDEL 0x40000000 /* entry in xhv_eiter must be deleted */
19692e8d 238#define SVphv_HASKFLAGS 0x80000000 /* keys have flag byte after hash */
bf6bd887 239
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240#define SVprv_WEAKREF 0x80000000 /* Weak reference */
241
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242struct xrv {
243 SV * xrv_rv; /* pointer to another SV */
244};
245
79072805 246struct xpv {
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247 char * xpv_pv; /* pointer to malloced string */
248 STRLEN xpv_cur; /* length of xpv_pv as a C string */
249 STRLEN xpv_len; /* allocated size */
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250};
251
252struct xpviv {
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253 char * xpv_pv; /* pointer to malloced string */
254 STRLEN xpv_cur; /* length of xpv_pv as a C string */
255 STRLEN xpv_len; /* allocated size */
a0d0e21e 256 IV xiv_iv; /* integer value or pv offset */
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257};
258
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259struct xpvuv {
260 char * xpv_pv; /* pointer to malloced string */
261 STRLEN xpv_cur; /* length of xpv_pv as a C string */
262 STRLEN xpv_len; /* allocated size */
263 UV xuv_uv; /* unsigned value or pv offset */
264};
265
79072805 266struct xpvnv {
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267 char * xpv_pv; /* pointer to malloced string */
268 STRLEN xpv_cur; /* length of xpv_pv as a C string */
269 STRLEN xpv_len; /* allocated size */
a0d0e21e 270 IV xiv_iv; /* integer value or pv offset */
65202027 271 NV xnv_nv; /* numeric value, if any */
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272};
273
6ee623d5 274/* These structure must match the beginning of struct xpvhv in hv.h. */
79072805 275struct xpvmg {
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276 char * xpv_pv; /* pointer to malloced string */
277 STRLEN xpv_cur; /* length of xpv_pv as a C string */
278 STRLEN xpv_len; /* allocated size */
a0d0e21e 279 IV xiv_iv; /* integer value or pv offset */
65202027 280 NV xnv_nv; /* numeric value, if any */
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281 MAGIC* xmg_magic; /* linked list of magicalness */
282 HV* xmg_stash; /* class package */
283};
284
285struct xpvlv {
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286 char * xpv_pv; /* pointer to malloced string */
287 STRLEN xpv_cur; /* length of xpv_pv as a C string */
288 STRLEN xpv_len; /* allocated size */
a0d0e21e 289 IV xiv_iv; /* integer value or pv offset */
65202027 290 NV xnv_nv; /* numeric value, if any */
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291 MAGIC* xmg_magic; /* linked list of magicalness */
292 HV* xmg_stash; /* class package */
8990e307 293
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294 STRLEN xlv_targoff;
295 STRLEN xlv_targlen;
296 SV* xlv_targ;
297 char xlv_type;
298};
299
300struct xpvgv {
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301 char * xpv_pv; /* pointer to malloced string */
302 STRLEN xpv_cur; /* length of xpv_pv as a C string */
303 STRLEN xpv_len; /* allocated size */
a0d0e21e 304 IV xiv_iv; /* integer value or pv offset */
65202027 305 NV xnv_nv; /* numeric value, if any */
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306 MAGIC* xmg_magic; /* linked list of magicalness */
307 HV* xmg_stash; /* class package */
8990e307 308
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309 GP* xgv_gp;
310 char* xgv_name;
311 STRLEN xgv_namelen;
312 HV* xgv_stash;
a5f75d66 313 U8 xgv_flags;
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314};
315
316struct xpvbm {
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317 char * xpv_pv; /* pointer to malloced string */
318 STRLEN xpv_cur; /* length of xpv_pv as a C string */
319 STRLEN xpv_len; /* allocated size */
a0d0e21e 320 IV xiv_iv; /* integer value or pv offset */
65202027 321 NV xnv_nv; /* numeric value, if any */
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322 MAGIC* xmg_magic; /* linked list of magicalness */
323 HV* xmg_stash; /* class package */
8990e307 324
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325 I32 xbm_useful; /* is this constant pattern being useful? */
326 U16 xbm_previous; /* how many characters in string before rare? */
327 U8 xbm_rare; /* rarest character in string */
328};
329
d22779f5 330/* This structure much match XPVCV in cv.h */
44a8e56a 331
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332typedef U16 cv_flags_t;
333
79072805 334struct xpvfm {
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335 char * xpv_pv; /* pointer to malloced string */
336 STRLEN xpv_cur; /* length of xpv_pv as a C string */
337 STRLEN xpv_len; /* allocated size */
a0d0e21e 338 IV xiv_iv; /* integer value or pv offset */
65202027 339 NV xnv_nv; /* numeric value, if any */
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340 MAGIC* xmg_magic; /* linked list of magicalness */
341 HV* xmg_stash; /* class package */
8990e307 342
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343 HV * xcv_stash;
344 OP * xcv_start;
345 OP * xcv_root;
acfe0abc 346 void (*xcv_xsub)(pTHX_ CV*);
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347 ANY xcv_xsubany;
348 GV * xcv_gv;
57843af0 349 char * xcv_file;
b195d487 350 long xcv_depth; /* >= 2 indicates recursive call */
79072805 351 AV * xcv_padlist;
748a9306 352 CV * xcv_outside;
4d1ff10f 353#ifdef USE_5005THREADS
f6d98b14 354 perl_mutex *xcv_mutexp; /* protects xcv_owner */
52e1cb5e 355 struct perl_thread *xcv_owner; /* current owner thread */
4d1ff10f 356#endif /* USE_5005THREADS */
77a005ab 357 cv_flags_t xcv_flags;
44a8e56a 358
11a7ac70 359 IV xfm_lines;
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360};
361
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362struct xpvio {
363 char * xpv_pv; /* pointer to malloced string */
364 STRLEN xpv_cur; /* length of xpv_pv as a C string */
365 STRLEN xpv_len; /* allocated size */
a0d0e21e 366 IV xiv_iv; /* integer value or pv offset */
65202027 367 NV xnv_nv; /* numeric value, if any */
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368 MAGIC* xmg_magic; /* linked list of magicalness */
369 HV* xmg_stash; /* class package */
370
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371 PerlIO * xio_ifp; /* ifp and ofp are normally the same */
372 PerlIO * xio_ofp; /* but sockets need separate streams */
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373 /* Cray addresses everything by word boundaries (64 bits) and
374 * code and data pointers cannot be mixed (which is exactly what
375 * Perl_filter_add() tries to do with the dirp), hence the following
376 * union trick (as suggested by Gurusamy Sarathy).
377 * For further information see Geir Johansen's problem report titled
378 [ID 20000612.002] Perl problem on Cray system
379 * The any pointer (known as IoANY()) will also be a good place
380 * to hang any IO disciplines to.
381 */
382 union {
383 DIR * xiou_dirp; /* for opendir, readdir, etc */
384 void * xiou_any; /* for alignment */
385 } xio_dirpu;
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386 IV xio_lines; /* $. */
387 IV xio_page; /* $% */
388 IV xio_page_len; /* $= */
389 IV xio_lines_left; /* $- */
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390 char * xio_top_name; /* $^ */
391 GV * xio_top_gv; /* $^ */
392 char * xio_fmt_name; /* $~ */
393 GV * xio_fmt_gv; /* $~ */
394 char * xio_bottom_name;/* $^B */
395 GV * xio_bottom_gv; /* $^B */
396 short xio_subprocess; /* -| or |- */
397 char xio_type;
398 char xio_flags;
399};
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400#define xio_dirp xio_dirpu.xiou_dirp
401#define xio_any xio_dirpu.xiou_any
8990e307 402
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403#define IOf_ARGV 1 /* this fp iterates over ARGV */
404#define IOf_START 2 /* check for null ARGV and substitute '-' */
405#define IOf_FLUSH 4 /* this fp wants a flush after write op */
406#define IOf_DIDTOP 8 /* just did top of form */
407#define IOf_UNTAINT 16 /* consider this fp (and its data) "safe" */
408#define IOf_NOLINE 32 /* slurped a pseudo-line from empty file */
409#define IOf_FAKE_DIRP 64 /* xio_dirp is fake (source filters kludge) */
8990e307 410
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411/* The following macros define implementation-independent predicates on SVs. */
412
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413/*
414=for apidoc Am|bool|SvNIOK|SV* sv
415Returns a boolean indicating whether the SV contains a number, integer or
416double.
417
418=for apidoc Am|bool|SvNIOKp|SV* sv
419Returns a boolean indicating whether the SV contains a number, integer or
420double. Checks the B<private> setting. Use C<SvNIOK>.
421
422=for apidoc Am|void|SvNIOK_off|SV* sv
423Unsets the NV/IV status of an SV.
424
425=for apidoc Am|bool|SvOK|SV* sv
426Returns a boolean indicating whether the value is an SV.
427
428=for apidoc Am|bool|SvIOKp|SV* sv
429Returns a boolean indicating whether the SV contains an integer. Checks
430the B<private> setting. Use C<SvIOK>.
431
432=for apidoc Am|bool|SvNOKp|SV* sv
433Returns a boolean indicating whether the SV contains a double. Checks the
434B<private> setting. Use C<SvNOK>.
435
436=for apidoc Am|bool|SvPOKp|SV* sv
437Returns a boolean indicating whether the SV contains a character string.
438Checks the B<private> setting. Use C<SvPOK>.
439
440=for apidoc Am|bool|SvIOK|SV* sv
441Returns a boolean indicating whether the SV contains an integer.
442
443=for apidoc Am|void|SvIOK_on|SV* sv
444Tells an SV that it is an integer.
445
446=for apidoc Am|void|SvIOK_off|SV* sv
447Unsets the IV status of an SV.
448
449=for apidoc Am|void|SvIOK_only|SV* sv
450Tells an SV that it is an integer and disables all other OK bits.
451
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452=for apidoc Am|void|SvIOK_only_UV|SV* sv
453Tells and SV that it is an unsigned integer and disables all other OK bits.
454
455=for apidoc Am|void|SvIOK_UV|SV* sv
456Returns a boolean indicating whether the SV contains an unsigned integer.
457
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458=for apidoc Am|void|SvUOK|SV* sv
459Returns a boolean indicating whether the SV contains an unsigned integer.
460
e331fc52 461=for apidoc Am|void|SvIOK_notUV|SV* sv
d1be9408 462Returns a boolean indicating whether the SV contains a signed integer.
e331fc52 463
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464=for apidoc Am|bool|SvNOK|SV* sv
465Returns a boolean indicating whether the SV contains a double.
466
467=for apidoc Am|void|SvNOK_on|SV* sv
468Tells an SV that it is a double.
469
470=for apidoc Am|void|SvNOK_off|SV* sv
471Unsets the NV status of an SV.
472
473=for apidoc Am|void|SvNOK_only|SV* sv
474Tells an SV that it is a double and disables all other OK bits.
475
476=for apidoc Am|bool|SvPOK|SV* sv
477Returns a boolean indicating whether the SV contains a character
478string.
479
480=for apidoc Am|void|SvPOK_on|SV* sv
481Tells an SV that it is a string.
482
483=for apidoc Am|void|SvPOK_off|SV* sv
484Unsets the PV status of an SV.
485
486=for apidoc Am|void|SvPOK_only|SV* sv
487Tells an SV that it is a string and disables all other OK bits.
d5ce4a7c 488Will also turn off the UTF8 status.
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489
490=for apidoc Am|bool|SvOOK|SV* sv
491Returns a boolean indicating whether the SvIVX is a valid offset value for
492the SvPVX. This hack is used internally to speed up removal of characters
493from the beginning of a SvPV. When SvOOK is true, then the start of the
494allocated string buffer is really (SvPVX - SvIVX).
495
496=for apidoc Am|bool|SvROK|SV* sv
497Tests if the SV is an RV.
498
499=for apidoc Am|void|SvROK_on|SV* sv
500Tells an SV that it is an RV.
501
502=for apidoc Am|void|SvROK_off|SV* sv
503Unsets the RV status of an SV.
504
505=for apidoc Am|SV*|SvRV|SV* sv
506Dereferences an RV to return the SV.
507
508=for apidoc Am|IV|SvIVX|SV* sv
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509Returns the raw value in the SV's IV slot, without checks or conversions.
510Only use when you are sure SvIOK is true. See also C<SvIV()>.
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511
512=for apidoc Am|UV|SvUVX|SV* sv
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513Returns the raw value in the SV's UV slot, without checks or conversions.
514Only use when you are sure SvIOK is true. See also C<SvUV()>.
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515
516=for apidoc Am|NV|SvNVX|SV* sv
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517Returns the raw value in the SV's NV slot, without checks or conversions.
518Only use when you are sure SvNOK is true. See also C<SvNV()>.
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519
520=for apidoc Am|char*|SvPVX|SV* sv
645c22ef 521Returns a pointer to the physical string in the SV. The SV must contain a
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522string.
523
524=for apidoc Am|STRLEN|SvCUR|SV* sv
525Returns the length of the string which is in the SV. See C<SvLEN>.
526
527=for apidoc Am|STRLEN|SvLEN|SV* sv
659239a4
MG
528Returns the size of the string buffer in the SV, not including any part
529attributable to C<SvOOK>. See C<SvCUR>.
954c1994
GS
530
531=for apidoc Am|char*|SvEND|SV* sv
532Returns a pointer to the last character in the string which is in the SV.
533See C<SvCUR>. Access the character as *(SvEND(sv)).
534
535=for apidoc Am|HV*|SvSTASH|SV* sv
536Returns the stash of the SV.
537
538=for apidoc Am|void|SvCUR_set|SV* sv|STRLEN len
539Set the length of the string which is in the SV. See C<SvCUR>.
540
541=cut
542*/
543
79072805 544#define SvNIOK(sv) (SvFLAGS(sv) & (SVf_IOK|SVf_NOK))
748a9306 545#define SvNIOKp(sv) (SvFLAGS(sv) & (SVp_IOK|SVp_NOK))
a0d0e21e 546#define SvNIOK_off(sv) (SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK| \
25da4f38 547 SVp_IOK|SVp_NOK|SVf_IVisUV))
79072805 548
463ee0b2 549#define SvOK(sv) (SvFLAGS(sv) & SVf_OK)
25da4f38 550#define SvOK_off(sv) (SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \
d41ff1b8 551 SVf_IVisUV|SVf_UTF8), \
25da4f38 552 SvOOK_off(sv))
d41ff1b8
GS
553#define SvOK_off_exc_UV(sv) (SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \
554 SVf_UTF8), \
a0d0e21e 555 SvOOK_off(sv))
79072805 556
8990e307
LW
557#define SvOKp(sv) (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK))
558#define SvIOKp(sv) (SvFLAGS(sv) & SVp_IOK)
765f542d
NC
559#ifdef PERL_COPY_ON_WRITE
560#define SvRELEASE_IVX(sv) ((SvFLAGS(sv) & (SVf_OOK|SVf_READONLY|SVf_FAKE)) \
561 && sv_release_IVX(sv))
562#define SvIOKp_on(sv) ((void)sv_release_IVX(sv), \
563 SvFLAGS(sv) |= SVp_IOK)
564#else
155aba94 565#define SvIOKp_on(sv) ((void)SvOOK_off(sv), SvFLAGS(sv) |= SVp_IOK)
765f542d 566#endif
8990e307
LW
567#define SvNOKp(sv) (SvFLAGS(sv) & SVp_NOK)
568#define SvNOKp_on(sv) (SvFLAGS(sv) |= SVp_NOK)
569#define SvPOKp(sv) (SvFLAGS(sv) & SVp_POK)
570#define SvPOKp_on(sv) (SvFLAGS(sv) |= SVp_POK)
463ee0b2 571
79072805 572#define SvIOK(sv) (SvFLAGS(sv) & SVf_IOK)
765f542d
NC
573#ifdef PERL_COPY_ON_WRITE
574#define SvIOK_on(sv) ((void)sv_release_IVX(sv), \
575 SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
576#else
155aba94 577#define SvIOK_on(sv) ((void)SvOOK_off(sv), \
a0d0e21e 578 SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
765f542d 579#endif
25da4f38 580#define SvIOK_off(sv) (SvFLAGS(sv) &= ~(SVf_IOK|SVp_IOK|SVf_IVisUV))
155aba94 581#define SvIOK_only(sv) ((void)SvOK_off(sv), \
a0d0e21e 582 SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
155aba94 583#define SvIOK_only_UV(sv) ((void)SvOK_off_exc_UV(sv), \
25da4f38 584 SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
70401c6b 585
25da4f38
IZ
586#define SvIOK_UV(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV)) \
587 == (SVf_IOK|SVf_IVisUV))
28e5dec8 588#define SvUOK(sv) SvIOK_UV(sv)
25da4f38
IZ
589#define SvIOK_notUV(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV)) \
590 == SVf_IOK)
591
592#define SvIsUV(sv) (SvFLAGS(sv) & SVf_IVisUV)
593#define SvIsUV_on(sv) (SvFLAGS(sv) |= SVf_IVisUV)
594#define SvIsUV_off(sv) (SvFLAGS(sv) &= ~SVf_IVisUV)
79072805
LW
595
596#define SvNOK(sv) (SvFLAGS(sv) & SVf_NOK)
a0d0e21e 597#define SvNOK_on(sv) (SvFLAGS(sv) |= (SVf_NOK|SVp_NOK))
8990e307 598#define SvNOK_off(sv) (SvFLAGS(sv) &= ~(SVf_NOK|SVp_NOK))
155aba94 599#define SvNOK_only(sv) ((void)SvOK_off(sv), \
a0d0e21e 600 SvFLAGS(sv) |= (SVf_NOK|SVp_NOK))
79072805 601
914184e1
JH
602/*
603=for apidoc Am|void|SvUTF8|SV* sv
604Returns a boolean indicating whether the SV contains UTF-8 encoded data.
605
606=for apidoc Am|void|SvUTF8_on|SV *sv
d5ce4a7c
GA
607Turn on the UTF8 status of an SV (the data is not changed, just the flag).
608Do not use frivolously.
914184e1
JH
609
610=for apidoc Am|void|SvUTF8_off|SV *sv
611Unsets the UTF8 status of an SV.
612
613=for apidoc Am|void|SvPOK_only_UTF8|SV* sv
d5ce4a7c
GA
614Tells an SV that it is a string and disables all other OK bits,
615and leaves the UTF8 status as it was.
f1a1024e 616
914184e1
JH
617=cut
618 */
619
a7cb1f99
GS
620#define SvUTF8(sv) (SvFLAGS(sv) & SVf_UTF8)
621#define SvUTF8_on(sv) (SvFLAGS(sv) |= (SVf_UTF8))
622#define SvUTF8_off(sv) (SvFLAGS(sv) &= ~(SVf_UTF8))
5bc28da9 623
79072805 624#define SvPOK(sv) (SvFLAGS(sv) & SVf_POK)
a0d0e21e 625#define SvPOK_on(sv) (SvFLAGS(sv) |= (SVf_POK|SVp_POK))
8990e307 626#define SvPOK_off(sv) (SvFLAGS(sv) &= ~(SVf_POK|SVp_POK))
d41ff1b8
GS
627#define SvPOK_only(sv) (SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \
628 SVf_IVisUV|SVf_UTF8), \
629 SvFLAGS(sv) |= (SVf_POK|SVp_POK))
630#define SvPOK_only_UTF8(sv) (SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \
631 SVf_IVisUV), \
a0d0e21e 632 SvFLAGS(sv) |= (SVf_POK|SVp_POK))
79072805
LW
633
634#define SvOOK(sv) (SvFLAGS(sv) & SVf_OOK)
155aba94 635#define SvOOK_on(sv) ((void)SvIOK_off(sv), SvFLAGS(sv) |= SVf_OOK)
79072805 636#define SvOOK_off(sv) (SvOOK(sv) && sv_backoff(sv))
79072805 637
a0d0e21e
LW
638#define SvFAKE(sv) (SvFLAGS(sv) & SVf_FAKE)
639#define SvFAKE_on(sv) (SvFLAGS(sv) |= SVf_FAKE)
640#define SvFAKE_off(sv) (SvFLAGS(sv) &= ~SVf_FAKE)
641
ed6116ce 642#define SvROK(sv) (SvFLAGS(sv) & SVf_ROK)
a0d0e21e 643#define SvROK_on(sv) (SvFLAGS(sv) |= SVf_ROK)
a0d0e21e 644#define SvROK_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK|SVf_AMAGIC))
79072805 645
8990e307
LW
646#define SvMAGICAL(sv) (SvFLAGS(sv) & (SVs_GMG|SVs_SMG|SVs_RMG))
647#define SvMAGICAL_on(sv) (SvFLAGS(sv) |= (SVs_GMG|SVs_SMG|SVs_RMG))
648#define SvMAGICAL_off(sv) (SvFLAGS(sv) &= ~(SVs_GMG|SVs_SMG|SVs_RMG))
79072805 649
8990e307
LW
650#define SvGMAGICAL(sv) (SvFLAGS(sv) & SVs_GMG)
651#define SvGMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_GMG)
652#define SvGMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_GMG)
ed6116ce 653
8990e307
LW
654#define SvSMAGICAL(sv) (SvFLAGS(sv) & SVs_SMG)
655#define SvSMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_SMG)
656#define SvSMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_SMG)
ed6116ce 657
8990e307
LW
658#define SvRMAGICAL(sv) (SvFLAGS(sv) & SVs_RMG)
659#define SvRMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_RMG)
660#define SvRMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_RMG)
ed6116ce 661
9e7bc3e8
JD
662#define SvAMAGIC(sv) (SvFLAGS(sv) & SVf_AMAGIC)
663#define SvAMAGIC_on(sv) (SvFLAGS(sv) |= SVf_AMAGIC)
664#define SvAMAGIC_off(sv) (SvFLAGS(sv) &= ~SVf_AMAGIC)
a0d0e21e 665
8cf8f3d1 666#define SvGAMAGIC(sv) (SvFLAGS(sv) & (SVs_GMG|SVf_AMAGIC))
1426bbf4 667
a0d0e21e
LW
668/*
669#define Gv_AMG(stash) \
670 (HV_AMAGICmb(stash) && \
671 ((!HV_AMAGICbad(stash) && HV_AMAGIC(stash)) || Gv_AMupdate(stash)))
672*/
3280af22 673#define Gv_AMG(stash) (PL_amagic_generation && Gv_AMupdate(stash))
a0d0e21e 674
810b8aa5
GS
675#define SvWEAKREF(sv) ((SvFLAGS(sv) & (SVf_ROK|SVprv_WEAKREF)) \
676 == (SVf_ROK|SVprv_WEAKREF))
677#define SvWEAKREF_on(sv) (SvFLAGS(sv) |= (SVf_ROK|SVprv_WEAKREF))
678#define SvWEAKREF_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK|SVprv_WEAKREF))
679
a0d0e21e 680#define SvTHINKFIRST(sv) (SvFLAGS(sv) & SVf_THINKFIRST)
ed6116ce 681
8990e307 682#define SvPADBUSY(sv) (SvFLAGS(sv) & SVs_PADBUSY)
ed6116ce 683
8990e307
LW
684#define SvPADTMP(sv) (SvFLAGS(sv) & SVs_PADTMP)
685#define SvPADTMP_on(sv) (SvFLAGS(sv) |= SVs_PADTMP|SVs_PADBUSY)
686#define SvPADTMP_off(sv) (SvFLAGS(sv) &= ~SVs_PADTMP)
ed6116ce 687
8990e307
LW
688#define SvPADMY(sv) (SvFLAGS(sv) & SVs_PADMY)
689#define SvPADMY_on(sv) (SvFLAGS(sv) |= SVs_PADMY|SVs_PADBUSY)
ed6116ce 690
8990e307
LW
691#define SvTEMP(sv) (SvFLAGS(sv) & SVs_TEMP)
692#define SvTEMP_on(sv) (SvFLAGS(sv) |= SVs_TEMP)
693#define SvTEMP_off(sv) (SvFLAGS(sv) &= ~SVs_TEMP)
79072805 694
8990e307
LW
695#define SvOBJECT(sv) (SvFLAGS(sv) & SVs_OBJECT)
696#define SvOBJECT_on(sv) (SvFLAGS(sv) |= SVs_OBJECT)
697#define SvOBJECT_off(sv) (SvFLAGS(sv) &= ~SVs_OBJECT)
79072805 698
8990e307
LW
699#define SvREADONLY(sv) (SvFLAGS(sv) & SVf_READONLY)
700#define SvREADONLY_on(sv) (SvFLAGS(sv) |= SVf_READONLY)
701#define SvREADONLY_off(sv) (SvFLAGS(sv) &= ~SVf_READONLY)
79072805 702
8990e307
LW
703#define SvSCREAM(sv) (SvFLAGS(sv) & SVp_SCREAM)
704#define SvSCREAM_on(sv) (SvFLAGS(sv) |= SVp_SCREAM)
705#define SvSCREAM_off(sv) (SvFLAGS(sv) &= ~SVp_SCREAM)
79072805 706
8990e307
LW
707#define SvCOMPILED(sv) (SvFLAGS(sv) & SVpfm_COMPILED)
708#define SvCOMPILED_on(sv) (SvFLAGS(sv) |= SVpfm_COMPILED)
709#define SvCOMPILED_off(sv) (SvFLAGS(sv) &= ~SVpfm_COMPILED)
79072805 710
25da4f38
IZ
711#define SvEVALED(sv) (SvFLAGS(sv) & SVrepl_EVAL)
712#define SvEVALED_on(sv) (SvFLAGS(sv) |= SVrepl_EVAL)
713#define SvEVALED_off(sv) (SvFLAGS(sv) &= ~SVrepl_EVAL)
714
8990e307
LW
715#define SvTAIL(sv) (SvFLAGS(sv) & SVpbm_TAIL)
716#define SvTAIL_on(sv) (SvFLAGS(sv) |= SVpbm_TAIL)
717#define SvTAIL_off(sv) (SvFLAGS(sv) &= ~SVpbm_TAIL)
718
8990e307
LW
719#define SvVALID(sv) (SvFLAGS(sv) & SVpbm_VALID)
720#define SvVALID_on(sv) (SvFLAGS(sv) |= SVpbm_VALID)
721#define SvVALID_off(sv) (SvFLAGS(sv) &= ~SVpbm_VALID)
722
1cc8b4c5
AB
723#ifdef USE_ITHREADS
724/* The following uses the FAKE flag to show that a regex pointer is infact
8ca6097c 725 its own offset in the regexpad for ithreads */
1cc8b4c5
AB
726#define SvREPADTMP(sv) (SvFLAGS(sv) & SVf_FAKE)
727#define SvREPADTMP_on(sv) (SvFLAGS(sv) |= SVf_FAKE)
728#define SvREPADTMP_off(sv) (SvFLAGS(sv) &= ~SVf_FAKE)
729#endif
730
ed6116ce
LW
731#define SvRV(sv) ((XRV*) SvANY(sv))->xrv_rv
732#define SvRVx(sv) SvRV(sv)
733
463ee0b2
LW
734#define SvIVX(sv) ((XPVIV*) SvANY(sv))->xiv_iv
735#define SvIVXx(sv) SvIVX(sv)
ff68c719
PP
736#define SvUVX(sv) ((XPVUV*) SvANY(sv))->xuv_uv
737#define SvUVXx(sv) SvUVX(sv)
463ee0b2
LW
738#define SvNVX(sv) ((XPVNV*)SvANY(sv))->xnv_nv
739#define SvNVXx(sv) SvNVX(sv)
740#define SvPVX(sv) ((XPV*) SvANY(sv))->xpv_pv
741#define SvPVXx(sv) SvPVX(sv)
79072805 742#define SvCUR(sv) ((XPV*) SvANY(sv))->xpv_cur
79072805
LW
743#define SvLEN(sv) ((XPV*) SvANY(sv))->xpv_len
744#define SvLENx(sv) SvLEN(sv)
745#define SvEND(sv)(((XPV*) SvANY(sv))->xpv_pv + ((XPV*)SvANY(sv))->xpv_cur)
6b88bc9c 746#define SvENDx(sv) ((PL_Sv = (sv)), SvEND(PL_Sv))
79072805
LW
747#define SvMAGIC(sv) ((XPVMG*) SvANY(sv))->xmg_magic
748#define SvSTASH(sv) ((XPVMG*) SvANY(sv))->xmg_stash
749
28e5dec8
JH
750/* Ask a scalar nicely to try to become an IV, if possible.
751 Not guaranteed to stay returning void */
752/* Macro won't actually call sv_2iv if already IOK */
753#define SvIV_please(sv) \
754 STMT_START {if (!SvIOKp(sv) && (SvNOK(sv) || SvPOK(sv))) \
755 (void) SvIV(sv); } STMT_END
79072805 756#define SvIV_set(sv, val) \
80b92232
PP
757 STMT_START { assert(SvTYPE(sv) == SVt_IV || SvTYPE(sv) >= SVt_PVIV); \
758 (((XPVIV*) SvANY(sv))->xiv_iv = val); } STMT_END
79072805 759#define SvNV_set(sv, val) \
80b92232
PP
760 STMT_START { assert(SvTYPE(sv) == SVt_NV || SvTYPE(sv) >= SVt_PVNV); \
761 (((XPVNV*) SvANY(sv))->xnv_nv = val); } STMT_END
79072805 762#define SvPV_set(sv, val) \
80b92232
PP
763 STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
764 (((XPV*) SvANY(sv))->xpv_pv = val); } STMT_END
79072805 765#define SvCUR_set(sv, val) \
80b92232
PP
766 STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
767 (((XPV*) SvANY(sv))->xpv_cur = val); } STMT_END
79072805 768#define SvLEN_set(sv, val) \
80b92232
PP
769 STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
770 (((XPV*) SvANY(sv))->xpv_len = val); } STMT_END
79072805 771#define SvEND_set(sv, val) \
80b92232
PP
772 STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
773 (((XPV*) SvANY(sv))->xpv_cur = val - SvPVX(sv)); } STMT_END
79072805
LW
774
775#define BmRARE(sv) ((XPVBM*) SvANY(sv))->xbm_rare
776#define BmUSEFUL(sv) ((XPVBM*) SvANY(sv))->xbm_useful
777#define BmPREVIOUS(sv) ((XPVBM*) SvANY(sv))->xbm_previous
778
779#define FmLINES(sv) ((XPVFM*) SvANY(sv))->xfm_lines
780
781#define LvTYPE(sv) ((XPVLV*) SvANY(sv))->xlv_type
782#define LvTARG(sv) ((XPVLV*) SvANY(sv))->xlv_targ
783#define LvTARGOFF(sv) ((XPVLV*) SvANY(sv))->xlv_targoff
784#define LvTARGLEN(sv) ((XPVLV*) SvANY(sv))->xlv_targlen
785
8990e307
LW
786#define IoIFP(sv) ((XPVIO*) SvANY(sv))->xio_ifp
787#define IoOFP(sv) ((XPVIO*) SvANY(sv))->xio_ofp
788#define IoDIRP(sv) ((XPVIO*) SvANY(sv))->xio_dirp
4755096e 789#define IoANY(sv) ((XPVIO*) SvANY(sv))->xio_any
8990e307
LW
790#define IoLINES(sv) ((XPVIO*) SvANY(sv))->xio_lines
791#define IoPAGE(sv) ((XPVIO*) SvANY(sv))->xio_page
792#define IoPAGE_LEN(sv) ((XPVIO*) SvANY(sv))->xio_page_len
793#define IoLINES_LEFT(sv)((XPVIO*) SvANY(sv))->xio_lines_left
794#define IoTOP_NAME(sv) ((XPVIO*) SvANY(sv))->xio_top_name
795#define IoTOP_GV(sv) ((XPVIO*) SvANY(sv))->xio_top_gv
796#define IoFMT_NAME(sv) ((XPVIO*) SvANY(sv))->xio_fmt_name
797#define IoFMT_GV(sv) ((XPVIO*) SvANY(sv))->xio_fmt_gv
798#define IoBOTTOM_NAME(sv)((XPVIO*) SvANY(sv))->xio_bottom_name
799#define IoBOTTOM_GV(sv) ((XPVIO*) SvANY(sv))->xio_bottom_gv
800#define IoSUBPROCESS(sv)((XPVIO*) SvANY(sv))->xio_subprocess
801#define IoTYPE(sv) ((XPVIO*) SvANY(sv))->xio_type
802#define IoFLAGS(sv) ((XPVIO*) SvANY(sv))->xio_flags
803
50952442
JH
804/* IoTYPE(sv) is a single character telling the type of I/O connection. */
805#define IoTYPE_RDONLY '<'
806#define IoTYPE_WRONLY '>'
807#define IoTYPE_RDWR '+'
808#define IoTYPE_APPEND 'a'
809#define IoTYPE_PIPE '|'
810#define IoTYPE_STD '-' /* stdin or stdout */
811#define IoTYPE_SOCKET 's'
812#define IoTYPE_CLOSED ' '
03fcf2fc
GS
813
814/*
954c1994
GS
815=for apidoc Am|bool|SvTAINTED|SV* sv
816Checks to see if an SV is tainted. Returns TRUE if it is, FALSE if
817not.
818
819=for apidoc Am|void|SvTAINTED_on|SV* sv
820Marks an SV as tainted.
821
822=for apidoc Am|void|SvTAINTED_off|SV* sv
823Untaints an SV. Be I<very> careful with this routine, as it short-circuits
824some of Perl's fundamental security features. XS module authors should not
825use this function unless they fully understand all the implications of
826unconditionally untainting the value. Untainting should be done in the
827standard perl fashion, via a carefully crafted regexp, rather than directly
828untainting variables.
829
830=for apidoc Am|void|SvTAINT|SV* sv
831Taints an SV if tainting is enabled
832
833=cut
834*/
835
bbce6d69 836#define SvTAINTED(sv) (SvMAGICAL(sv) && sv_tainted(sv))
3280af22
NIS
837#define SvTAINTED_on(sv) STMT_START{ if(PL_tainting){sv_taint(sv);} }STMT_END
838#define SvTAINTED_off(sv) STMT_START{ if(PL_tainting){sv_untaint(sv);} }STMT_END
bbce6d69 839
c6ee37c5
MB
840#define SvTAINT(sv) \
841 STMT_START { \
3280af22 842 if (PL_tainting) { \
3280af22 843 if (PL_tainted) \
c6ee37c5
MB
844 SvTAINTED_on(sv); \
845 } \
846 } STMT_END
79072805 847
954c1994
GS
848/*
849=for apidoc Am|char*|SvPV_force|SV* sv|STRLEN len
5f08bad4
ST
850Like C<SvPV> but will force the SV into containing just a string
851(C<SvPOK_only>). You want force if you are going to update the C<SvPVX>
852directly.
954c1994 853
645c22ef 854=for apidoc Am|char*|SvPV_force_nomg|SV* sv|STRLEN len
5f08bad4
ST
855Like C<SvPV> but will force the SV into containing just a string
856(C<SvPOK_only>). You want force if you are going to update the C<SvPVX>
857directly. Doesn't process magic.
645c22ef 858
954c1994 859=for apidoc Am|char*|SvPV|SV* sv|STRLEN len
5f08bad4
ST
860Returns a pointer to the string in the SV, or a stringified form of
861the SV if the SV does not contain a string. The SV may cache the
862stringified version becoming C<SvPOK>. Handles 'get' magic. See also
645c22ef
DM
863C<SvPVx> for a version which guarantees to evaluate sv only once.
864
865=for apidoc Am|char*|SvPVx|SV* sv|STRLEN len
866A version of C<SvPV> which guarantees to evaluate sv only once.
954c1994
GS
867
868=for apidoc Am|char*|SvPV_nolen|SV* sv
5f08bad4
ST
869Returns a pointer to the string in the SV, or a stringified form of
870the SV if the SV does not contain a string. The SV may cache the
871stringified form becoming C<SvPOK>. Handles 'get' magic.
954c1994
GS
872
873=for apidoc Am|IV|SvIV|SV* sv
645c22ef
DM
874Coerces the given SV to an integer and returns it. See C<SvIVx> for a
875version which guarantees to evaluate sv only once.
876
877=for apidoc Am|IV|SvIVx|SV* sv
878Coerces the given SV to an integer and returns it. Guarantees to evaluate
d1be9408 879sv only once. Use the more efficient C<SvIV> otherwise.
954c1994
GS
880
881=for apidoc Am|NV|SvNV|SV* sv
645c22ef
DM
882Coerce the given SV to a double and return it. See C<SvNVx> for a version
883which guarantees to evaluate sv only once.
884
885=for apidoc Am|NV|SvNVx|SV* sv
886Coerces the given SV to a double and returns it. Guarantees to evaluate
d1be9408 887sv only once. Use the more efficient C<SvNV> otherwise.
954c1994
GS
888
889=for apidoc Am|UV|SvUV|SV* sv
645c22ef
DM
890Coerces the given SV to an unsigned integer and returns it. See C<SvUVx>
891for a version which guarantees to evaluate sv only once.
892
893=for apidoc Am|UV|SvUVx|SV* sv
894Coerces the given SV to an unsigned integer and returns it. Guarantees to
d1be9408 895evaluate sv only once. Use the more efficient C<SvUV> otherwise.
954c1994
GS
896
897=for apidoc Am|bool|SvTRUE|SV* sv
898Returns a boolean indicating whether Perl would evaluate the SV as true or
899false, defined or undefined. Does not handle 'get' magic.
900
645c22ef 901=for apidoc Am|char*|SvPVutf8_force|SV* sv|STRLEN len
b70b15d2 902Like C<SvPV_force>, but converts sv to utf8 first if necessary.
645c22ef
DM
903
904=for apidoc Am|char*|SvPVutf8|SV* sv|STRLEN len
b70b15d2 905Like C<SvPV>, but converts sv to utf8 first if necessary.
645c22ef 906
b70b15d2
TJ
907=for apidoc Am|char*|SvPVutf8_nolen|SV* sv
908Like C<SvPV_nolen>, but converts sv to utf8 first if necessary.
645c22ef
DM
909
910=for apidoc Am|char*|SvPVbyte_force|SV* sv|STRLEN len
911Like C<SvPV_force>, but converts sv to byte representation first if necessary.
912
913=for apidoc Am|char*|SvPVbyte|SV* sv|STRLEN len
914Like C<SvPV>, but converts sv to byte representation first if necessary.
915
b70b15d2 916=for apidoc Am|char*|SvPVbyte_nolen|SV* sv
645c22ef
DM
917Like C<SvPV_nolen>, but converts sv to byte representation first if necessary.
918
919=for apidoc Am|char*|SvPVutf8x_force|SV* sv|STRLEN len
b70b15d2 920Like C<SvPV_force>, but converts sv to utf8 first if necessary.
d1be9408 921Guarantees to evaluate sv only once; use the more efficient C<SvPVutf8_force>
645c22ef
DM
922otherwise.
923
924=for apidoc Am|char*|SvPVutf8x|SV* sv|STRLEN len
b70b15d2 925Like C<SvPV>, but converts sv to utf8 first if necessary.
d1be9408 926Guarantees to evaluate sv only once; use the more efficient C<SvPVutf8>
645c22ef
DM
927otherwise.
928
929=for apidoc Am|char*|SvPVbytex_force|SV* sv|STRLEN len
930Like C<SvPV_force>, but converts sv to byte representation first if necessary.
d1be9408 931Guarantees to evaluate sv only once; use the more efficient C<SvPVbyte_force>
645c22ef
DM
932otherwise.
933
934=for apidoc Am|char*|SvPVbytex|SV* sv|STRLEN len
935Like C<SvPV>, but converts sv to byte representation first if necessary.
d1be9408 936Guarantees to evaluate sv only once; use the more efficient C<SvPVbyte>
645c22ef
DM
937otherwise.
938
939
954c1994
GS
940=cut
941*/
942
25da4f38 943/* Let us hope that bitmaps for UV and IV are the same */
463ee0b2 944#define SvIV(sv) (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv))
ff68c719 945#define SvUV(sv) (SvIOK(sv) ? SvUVX(sv) : sv_2uv(sv))
463ee0b2 946#define SvNV(sv) (SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv))
79072805 947
baca2b92 948/* ----*/
8d6d96c1 949
8d6d96c1
HS
950#define SvPV(sv, lp) SvPV_flags(sv, lp, SV_GMAGIC)
951
8d6d96c1
HS
952#define SvPV_flags(sv, lp, flags) \
953 ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \
954 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pv_flags(sv, &lp, flags))
79072805 955
8d6d96c1 956#define SvPV_force(sv, lp) SvPV_force_flags(sv, lp, SV_GMAGIC)
baca2b92 957
8d6d96c1
HS
958#define SvPV_force_nomg(sv, lp) SvPV_force_flags(sv, lp, 0)
959
8d6d96c1 960#define SvPV_force_flags(sv, lp, flags) \
ff68c719 961 ((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST)) == SVf_POK \
8d6d96c1 962 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvn_force_flags(sv, &lp, flags))
a0d0e21e 963
1fa8b10d 964#define SvPV_nolen(sv) \
5bc28da9
NIS
965 ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \
966 ? SvPVX(sv) : sv_2pv_nolen(sv))
70401c6b 967
baca2b92 968#define SvPV_nomg(sv, lp) SvPV_flags(sv, lp, 0)
5bc28da9 969
baca2b92 970/* ----*/
70401c6b 971
5bc28da9
NIS
972#define SvPVutf8(sv, lp) \
973 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK|SVf_UTF8) \
974 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pvutf8(sv, &lp))
70401c6b 975
5bc28da9 976#define SvPVutf8_force(sv, lp) \
70401c6b 977 ((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST)) == (SVf_POK|SVf_UTF8) \
5bc28da9
NIS
978 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvutf8n_force(sv, &lp))
979
baca2b92 980
5bc28da9
NIS
981#define SvPVutf8_nolen(sv) \
982 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK|SVf_UTF8)\
983 ? SvPVX(sv) : sv_2pvutf8_nolen(sv))
70401c6b 984
baca2b92
DM
985/* ----*/
986
5bc28da9
NIS
987#define SvPVbyte(sv, lp) \
988 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK) \
989 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pvbyte(sv, &lp))
70401c6b 990
5bc28da9
NIS
991#define SvPVbyte_force(sv, lp) \
992 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVf_THINKFIRST)) == (SVf_POK) \
993 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvbyte_force(sv, &lp))
994
5bc28da9
NIS
995#define SvPVbyte_nolen(sv) \
996 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK)\
997 ? SvPVX(sv) : sv_2pvbyte_nolen(sv))
70401c6b 998
1fa8b10d 999
baca2b92
DM
1000
1001/* define FOOx(): idempotent versions of FOO(). If possible, use a local
1002 * var to evaluate the arg once; failing that, use a global if possible;
1003 * failing that, call a function to do the work
1004 */
1005
1006#define SvPVx_force(sv, lp) sv_pvn_force(sv, &lp)
1007#define SvPVutf8x_force(sv, lp) sv_pvutf8n_force(sv, &lp)
1008#define SvPVbytex_force(sv, lp) sv_pvbyten_force(sv, &lp)
1009
a80f87c4 1010#ifdef __GNUC__
baca2b92 1011
a80f87c4
GS
1012# define SvIVx(sv) ({SV *nsv = (SV*)(sv); SvIV(nsv); })
1013# define SvUVx(sv) ({SV *nsv = (SV*)(sv); SvUV(nsv); })
1014# define SvNVx(sv) ({SV *nsv = (SV*)(sv); SvNV(nsv); })
1015# define SvPVx(sv, lp) ({SV *nsv = (sv); SvPV(nsv, lp); })
5bc28da9
NIS
1016# define SvPVutf8x(sv, lp) ({SV *nsv = (sv); SvPVutf8(nsv, lp); })
1017# define SvPVbytex(sv, lp) ({SV *nsv = (sv); SvPVbyte(nsv, lp); })
a80f87c4 1018# define SvTRUE(sv) ( \
8990e307
LW
1019 !sv \
1020 ? 0 \
1021 : SvPOK(sv) \
a80f87c4
GS
1022 ? (({XPV *nxpv = (XPV*)SvANY(sv); \
1023 nxpv && \
c2f1de04 1024 (nxpv->xpv_cur > 1 || \
a80f87c4 1025 (nxpv->xpv_cur && *nxpv->xpv_pv != '0')); }) \
79072805
LW
1026 ? 1 \
1027 : 0) \
1028 : \
1029 SvIOK(sv) \
463ee0b2 1030 ? SvIVX(sv) != 0 \
79072805 1031 : SvNOK(sv) \
463ee0b2
LW
1032 ? SvNVX(sv) != 0.0 \
1033 : sv_2bool(sv) )
a80f87c4 1034# define SvTRUEx(sv) ({SV *nsv = (sv); SvTRUE(nsv); })
baca2b92 1035
a80f87c4 1036#else /* __GNUC__ */
baca2b92
DM
1037
1038# ifdef USE_5005THREADS
1039# define SvIVx(sv) sv_iv(sv)
1040# define SvUVx(sv) sv_uv(sv)
1041# define SvNVx(sv) sv_nv(sv)
1042# define SvPVx(sv, lp) sv_pvn(sv, &lp)
1043# define SvPVutf8x(sv, lp) sv_pvutf8n(sv, &lp)
1044# define SvPVbytex(sv, lp) sv_pvbyten(sv, &lp)
1045# define SvTRUE(sv) SvTRUEx(sv)
1046# define SvTRUEx(sv) sv_true(sv)
1047
1048# else /* USE_5005THREADS */
1049
a80f87c4
GS
1050/* These inlined macros use globals, which will require a thread
1051 * declaration in user code, so we avoid them under threads */
1052
baca2b92
DM
1053# define SvIVx(sv) ((PL_Sv = (sv)), SvIV(PL_Sv))
1054# define SvUVx(sv) ((PL_Sv = (sv)), SvUV(PL_Sv))
1055# define SvNVx(sv) ((PL_Sv = (sv)), SvNV(PL_Sv))
1056# define SvPVx(sv, lp) ((PL_Sv = (sv)), SvPV(PL_Sv, lp))
1057# define SvPVutf8x(sv, lp) ((PL_Sv = (sv)), SvPVutf8(PL_Sv, lp))
1058# define SvPVbytex(sv, lp) ((PL_Sv = (sv)), SvPVbyte(PL_Sv, lp))
1059# define SvTRUE(sv) ( \
a80f87c4
GS
1060 !sv \
1061 ? 0 \
1062 : SvPOK(sv) \
6b88bc9c 1063 ? ((PL_Xpv = (XPV*)SvANY(sv)) && \
c2f1de04 1064 (PL_Xpv->xpv_cur > 1 || \
6b88bc9c 1065 (PL_Xpv->xpv_cur && *PL_Xpv->xpv_pv != '0')) \
a80f87c4
GS
1066 ? 1 \
1067 : 0) \
1068 : \
1069 SvIOK(sv) \
1070 ? SvIVX(sv) != 0 \
1071 : SvNOK(sv) \
1072 ? SvNVX(sv) != 0.0 \
1073 : sv_2bool(sv) )
baca2b92
DM
1074# define SvTRUEx(sv) ((PL_Sv = (sv)), SvTRUE(PL_Sv))
1075# endif /* USE_5005THREADS */
1076#endif /* __GNU__ */
1077
765f542d
NC
1078#define SvIsCOW(sv) ((SvFLAGS(sv) & (SVf_FAKE | SVf_READONLY)) == \
1079 (SVf_FAKE | SVf_READONLY))
baca2b92
DM
1080
1081/* flag values for sv_*_flags functions */
1082#define SV_IMMEDIATE_UNREF 1
1083#define SV_GMAGIC 2
1084
765f542d
NC
1085#ifdef PERL_COPY_ON_WRITE
1086#define SV_COW_DROP_PV 4
1087
1088#define SvIsCOW_shared_hash(sv) (SvIsCOW(sv) && SvLEN(sv) == 0)
1089#define SvIsCOW_normal(sv) (SvIsCOW(sv) && SvLEN(sv))
1090
1091#define SV_CHECK_THINKFIRST_COW_DROP(sv) if (SvTHINKFIRST(sv)) \
1092 sv_force_normal_flags(sv, SV_COW_DROP_PV)
1093#else
1094#define SV_CHECK_THINKFIRST_COW_DROP(sv) if (SvTHINKFIRST(sv)) \
1095 sv_force_normal_flags(sv, 0)
1096#endif /* PERL_COPY_ON_WRITE */
1097#define SV_CHECK_THINKFIRST(sv) if (SvTHINKFIRST(sv)) \
1098 sv_force_normal_flags(sv, 0)
1099
1100
baca2b92
DM
1101/* all these 'functions' are now just macros */
1102
1103#define sv_pv(sv) SvPV_nolen(sv)
1104#define sv_pvutf8(sv) SvPVutf8_nolen(sv)
1105#define sv_pvbyte(sv) SvPVbyte_nolen(sv)
1106
1107#define sv_pvn_force_nomg(sv, lp) sv_pvn_force_flags(sv, lp, 0)
1108#define sv_utf8_upgrade_nomg(sv) sv_utf8_upgrade_flags(sv, 0)
1109#define sv_catpvn_nomg(dsv, sstr, slen) sv_catpvn_flags(dsv, sstr, slen, 0)
1110#define sv_setsv(dsv, ssv) sv_setsv_flags(dsv, ssv, SV_GMAGIC)
1111#define sv_setsv_nomg(dsv, ssv) sv_setsv_flags(dsv, ssv, 0)
1112#define sv_catsv(dsv, ssv) sv_catsv_flags(dsv, ssv, SV_GMAGIC)
1113#define sv_catsv_nomg(dsv, ssv) sv_catsv_flags(dsv, ssv, 0)
1114#define sv_catpvn(dsv, sstr, slen) sv_catpvn_flags(dsv, sstr, slen, SV_GMAGIC)
1115#define sv_2pv(sv, lp) sv_2pv_flags(sv, lp, SV_GMAGIC)
1116#define sv_2pv_nomg(sv, lp) sv_2pv_flags(sv, lp, 0)
1117#define sv_pvn_force(sv, lp) sv_pvn_force_flags(sv, lp, SV_GMAGIC)
1118#define sv_utf8_upgrade(sv) sv_utf8_upgrade_flags(sv, SV_GMAGIC)
1119
79072805 1120
954c1994
GS
1121/*
1122=for apidoc Am|SV*|newRV_inc|SV* sv
1123
1124Creates an RV wrapper for an SV. The reference count for the original SV is
1125incremented.
1126
1127=cut
1128*/
1129
5f05dabc 1130#define newRV_inc(sv) newRV(sv)
5f05dabc 1131
ef50df4b 1132/* the following macros update any magic values this sv is associated with */
79072805 1133
954c1994 1134/*
ccfc67b7
JH
1135=head1 Magical Functions
1136
954c1994
GS
1137=for apidoc Am|void|SvGETMAGIC|SV* sv
1138Invokes C<mg_get> on an SV if it has 'get' magic. This macro evaluates its
1139argument more than once.
1140
1141=for apidoc Am|void|SvSETMAGIC|SV* sv
1142Invokes C<mg_set> on an SV if it has 'set' magic. This macro evaluates its
1143argument more than once.
1144
1145=for apidoc Am|void|SvSetSV|SV* dsb|SV* ssv
1146Calls C<sv_setsv> if dsv is not the same as ssv. May evaluate arguments
1147more than once.
1148
1149=for apidoc Am|void|SvSetSV_nosteal|SV* dsv|SV* ssv
1150Calls a non-destructive version of C<sv_setsv> if dsv is not the same as
1151ssv. May evaluate arguments more than once.
1152
645c22ef
DM
1153=for apidoc Am|void|SvSetMagicSV|SV* dsb|SV* ssv
1154Like C<SvSetSV>, but does any set magic required afterwards.
1155
1156=for apidoc Am|void|SvSetMagicSV_nosteal|SV* dsv|SV* ssv
1157Like C<SvSetMagicSV>, but does any set magic required afterwards.
1158
68795e93
NIS
1159=for apidoc Am|void|SvSHARE|SV* sv
1160Arranges for sv to be shared between threads if a suitable module
1161has been loaded.
1162
1163=for apidoc Am|void|SvLOCK|SV* sv
1164Arranges for a mutual exclusion lock to be obtained on sv if a suitable module
1165has been loaded.
1166
1167=for apidoc Am|void|SvUNLOCK|SV* sv
1168Releases a mutual exclusion lock on sv if a suitable module
1169has been loaded.
1170
ccfc67b7
JH
1171=head1 SV Manipulation Functions
1172
679ac26e 1173=for apidoc Am|char *|SvGROW|SV* sv|STRLEN len
954c1994
GS
1174Expands the character buffer in the SV so that it has room for the
1175indicated number of bytes (remember to reserve space for an extra trailing
8cf8f3d1 1176NUL character). Calls C<sv_grow> to perform the expansion if necessary.
954c1994
GS
1177Returns a pointer to the character buffer.
1178
1179=cut
1180*/
1181
68795e93
NIS
1182#define SvSHARE(sv) CALL_FPTR(PL_sharehook)(aTHX_ sv)
1183#define SvLOCK(sv) CALL_FPTR(PL_lockhook)(aTHX_ sv)
1184#define SvUNLOCK(sv) CALL_FPTR(PL_unlockhook)(aTHX_ sv)
1185
189b2af5
GS
1186#define SvGETMAGIC(x) STMT_START { if (SvGMAGICAL(x)) mg_get(x); } STMT_END
1187#define SvSETMAGIC(x) STMT_START { if (SvSMAGICAL(x)) mg_set(x); } STMT_END
79072805 1188
54310121 1189#define SvSetSV_and(dst,src,finally) \
189b2af5 1190 STMT_START { \
54310121
PP
1191 if ((dst) != (src)) { \
1192 sv_setsv(dst, src); \
1193 finally; \
189b2af5
GS
1194 } \
1195 } STMT_END
54310121 1196#define SvSetSV_nosteal_and(dst,src,finally) \
189b2af5 1197 STMT_START { \
8ebc5c01
PP
1198 if ((dst) != (src)) { \
1199 U32 tMpF = SvFLAGS(src) & SVs_TEMP; \
1200 SvTEMP_off(src); \
1201 sv_setsv(dst, src); \
1202 SvFLAGS(src) |= tMpF; \
54310121 1203 finally; \
189b2af5
GS
1204 } \
1205 } STMT_END
79072805 1206
54310121 1207#define SvSetSV(dst,src) \
c9d716f7 1208 SvSetSV_and(dst,src,/*nothing*/;)
54310121 1209#define SvSetSV_nosteal(dst,src) \
c9d716f7 1210 SvSetSV_nosteal_and(dst,src,/*nothing*/;)
54310121
PP
1211
1212#define SvSetMagicSV(dst,src) \
1213 SvSetSV_and(dst,src,SvSETMAGIC(dst))
1214#define SvSetMagicSV_nosteal(dst,src) \
1215 SvSetSV_nosteal_and(dst,src,SvSETMAGIC(dst))
1216
1045810a 1217#if !defined(SKIP_DEBUGGING)
79072805 1218#define SvPEEK(sv) sv_peek(sv)
3967c732
JD
1219#else
1220#define SvPEEK(sv) ""
1221#endif
79072805 1222
3280af22 1223#define SvIMMORTAL(sv) ((sv)==&PL_sv_undef || (sv)==&PL_sv_yes || (sv)==&PL_sv_no)
36477c24 1224
3280af22 1225#define boolSV(b) ((b) ? &PL_sv_yes : &PL_sv_no)
54310121 1226
79072805
LW
1227#define isGV(sv) (SvTYPE(sv) == SVt_PVGV)
1228
933fea7f
GS
1229#define SvGROW(sv,len) (SvLEN(sv) < (len) ? sv_grow(sv,len) : SvPVX(sv))
1230#define Sv_Grow sv_grow
3d35f11b 1231
a0739874
DM
1232#define CLONEf_COPY_STACKS 1
1233#define CLONEf_KEEP_PTR_TABLE 2
c43294b8 1234#define CLONEf_CLONE_HOST 4
a0739874 1235
8cf8f3d1 1236struct clone_params {
d2d73c3e
AB
1237 AV* stashes;
1238 UV flags;
59b40662 1239 PerlInterpreter *proto_perl;
8cf8f3d1 1240};