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Add CLONE_SKIP() class method to allow individual classes to skip
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a0d0e21e 1/* sv.h
79072805 2 *
4bb101f2 3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
1d325971 4 * 2000, 2001, 2002, 2003, 2004, 2005 by Larry Wall and others
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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 *
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9 */
10
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11#ifdef sv_flags
12#undef sv_flags /* Convex has this in <signal.h> for sigvec() */
13#endif
14
954c1994 15/*
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16=head1 SV Flags
17
954c1994 18=for apidoc AmU||svtype
8cf8f3d1 19An enum of flags for Perl types. These are found in the file B<sv.h>
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20in the C<svtype> enum. Test these flags with the C<SvTYPE> macro.
21
22=for apidoc AmU||SVt_PV
23Pointer type flag for scalars. See C<svtype>.
24
25=for apidoc AmU||SVt_IV
26Integer type flag for scalars. See C<svtype>.
27
28=for apidoc AmU||SVt_NV
29Double type flag for scalars. See C<svtype>.
30
31=for apidoc AmU||SVt_PVMG
32Type flag for blessed scalars. See C<svtype>.
33
34=for apidoc AmU||SVt_PVAV
35Type flag for arrays. See C<svtype>.
36
37=for apidoc AmU||SVt_PVHV
38Type flag for hashes. See C<svtype>.
39
40=for apidoc AmU||SVt_PVCV
41Type flag for code refs. See C<svtype>.
42
43=cut
44*/
45
79072805 46typedef enum {
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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 */
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56 SVt_PVGV, /* 9 */
57 SVt_PVLV, /* 10 */
58 SVt_PVAV, /* 11 */
59 SVt_PVHV, /* 12 */
60 SVt_PVCV, /* 13 */
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61 SVt_PVFM, /* 14 */
62 SVt_PVIO /* 15 */
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63} svtype;
64
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65/* Using C's structural equivalence to help emulate C++ inheritance here... */
66
5e045b90 67struct STRUCT_SV { /* struct sv { */
463ee0b2 68 void* sv_any; /* pointer to something */
79072805 69 U32 sv_refcnt; /* how many references to us */
8990e307 70 U32 sv_flags; /* what we are */
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71#ifdef DEBUG_LEAKING_SCALARS
72 unsigned sv_debug_optype:9; /* the type of OP that allocated us */
73 unsigned sv_debug_inpad:1; /* was allocated in a pad for an OP */
74 unsigned sv_debug_cloned:1; /* was cloned for an ithread */
75 unsigned sv_debug_line:16; /* the line where we were allocated */
76 char * sv_debug_file; /* the file where we were allocated */
77#endif
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78};
79
80struct gv {
463ee0b2 81 XPVGV* sv_any; /* pointer to something */
79072805 82 U32 sv_refcnt; /* how many references to us */
8990e307 83 U32 sv_flags; /* what we are */
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84};
85
86struct cv {
232e078e 87 XPVCV* sv_any; /* pointer to something */
79072805 88 U32 sv_refcnt; /* how many references to us */
8990e307 89 U32 sv_flags; /* what we are */
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90};
91
92struct av {
463ee0b2 93 XPVAV* sv_any; /* pointer to something */
79072805 94 U32 sv_refcnt; /* how many references to us */
8990e307 95 U32 sv_flags; /* what we are */
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96};
97
98struct hv {
463ee0b2 99 XPVHV* sv_any; /* pointer to something */
79072805 100 U32 sv_refcnt; /* how many references to us */
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101 U32 sv_flags; /* what we are */
102};
103
104struct io {
105 XPVIO* sv_any; /* pointer to something */
106 U32 sv_refcnt; /* how many references to us */
107 U32 sv_flags; /* what we are */
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108};
109
954c1994 110/*
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111=head1 SV Manipulation Functions
112
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113=for apidoc Am|U32|SvREFCNT|SV* sv
114Returns the value of the object's reference count.
115
116=for apidoc Am|SV*|SvREFCNT_inc|SV* sv
117Increments the reference count of the given SV.
118
119=for apidoc Am|void|SvREFCNT_dec|SV* sv
120Decrements the reference count of the given SV.
121
122=for apidoc Am|svtype|SvTYPE|SV* sv
123Returns the type of the SV. See C<svtype>.
124
125=for apidoc Am|void|SvUPGRADE|SV* sv|svtype type
126Used to upgrade an SV to a more complex form. Uses C<sv_upgrade> to
127perform the upgrade if necessary. See C<svtype>.
128
129=cut
130*/
131
463ee0b2 132#define SvANY(sv) (sv)->sv_any
79072805 133#define SvFLAGS(sv) (sv)->sv_flags
aeea060c 134#define SvREFCNT(sv) (sv)->sv_refcnt
a863c7d1 135
93189314 136#if defined(__GNUC__) && !defined(__STRICT_ANSI__) && !defined(PERL_GCC_PEDANTIC)
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137# define SvREFCNT_inc(sv) \
138 ({ \
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139 SV *_sv = (SV*)(sv); \
140 if (_sv) \
141 (SvREFCNT(_sv))++; \
142 _sv; \
dce16143 143 })
8990e307 144#else
3db8f154 145# define SvREFCNT_inc(sv) \
4db098f4 146 ((PL_Sv=(SV*)(sv)), (PL_Sv && ++(SvREFCNT(PL_Sv))), (SV*)PL_Sv)
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147#endif
148
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149#if defined(__GNUC__) && !defined(__STRICT_ANSI__) && !defined(PERL_GCC_PEDANTIC)
150# define SvREFCNT_dec(sv) \
151 ({ \
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152 SV *_sv = (SV*)(sv); \
153 if (_sv) { \
154 if (SvREFCNT(_sv)) { \
155 if (--(SvREFCNT(_sv)) == 0) \
156 Perl_sv_free2(aTHX_ _sv); \
8c4d3c90 157 } else { \
3de3296f 158 sv_free(_sv); \
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159 } \
160 } \
161 })
162#else
91f3b821 163#define SvREFCNT_dec(sv) sv_free((SV*)(sv))
8c4d3c90 164#endif
a863c7d1 165
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166#define SVTYPEMASK 0xff
167#define SvTYPE(sv) ((sv)->sv_flags & SVTYPEMASK)
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168
169#define SvUPGRADE(sv, mt) (SvTYPE(sv) >= mt || sv_upgrade(sv, mt))
170
d9d18af6 171#define SVs_PADSTALE 0x00000100 /* lexical has gone out of scope */
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172#define SVs_PADTMP 0x00000200 /* in use as tmp */
173#define SVs_PADMY 0x00000400 /* in use a "my" variable */
174#define SVs_TEMP 0x00000800 /* string is stealable? */
175#define SVs_OBJECT 0x00001000 /* is "blessed" */
176#define SVs_GMG 0x00002000 /* has magical get method */
177#define SVs_SMG 0x00004000 /* has magical set method */
178#define SVs_RMG 0x00008000 /* has random magical methods */
179
180#define SVf_IOK 0x00010000 /* has valid public integer value */
181#define SVf_NOK 0x00020000 /* has valid public numeric value */
182#define SVf_POK 0x00040000 /* has valid public pointer value */
183#define SVf_ROK 0x00080000 /* has a valid reference pointer */
a0d0e21e 184
748a9306 185#define SVf_FAKE 0x00100000 /* glob or lexical is just a copy */
8990e307 186#define SVf_OOK 0x00200000 /* has valid offset value */
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187#define SVf_BREAK 0x00400000 /* refcnt is artificially low - used
188 * by SV's in final arena cleanup */
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189#define SVf_READONLY 0x00800000 /* may not be modified */
190
a0d0e21e 191
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192#define SVp_IOK 0x01000000 /* has valid non-public integer value */
193#define SVp_NOK 0x02000000 /* has valid non-public numeric value */
194#define SVp_POK 0x04000000 /* has valid non-public pointer value */
195#define SVp_SCREAM 0x08000000 /* has been studied? */
196
446eaa42 197#define SVf_UTF8 0x20000000 /* SvPV is UTF-8 encoded */
7a5fd60d 198/* Ensure this value does not clash with the GV_ADD* flags in gv.h */
5bc28da9 199
430eacda 200#define SVf_THINKFIRST (SVf_READONLY|SVf_ROK|SVf_FAKE)
5bc28da9 201
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202#define SVf_OK (SVf_IOK|SVf_NOK|SVf_POK|SVf_ROK| \
203 SVp_IOK|SVp_NOK|SVp_POK)
204
9e7bc3e8 205#define SVf_AMAGIC 0x10000000 /* has magical overloaded methods */
a0d0e21e 206
7b2a0f84 207#define PRIVSHIFT 8 /* (SVp_?OK >> PRIVSHIFT) == SVf_?OK */
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208
209/* Some private flags. */
210
f472eb5c 211/* SVpad_OUR may be set on SVt_PV{NV,MG,GV} types */
032d6771 212#define SVpad_OUR 0x80000000 /* pad name is "our" instead of "my" */
524189f1 213#define SVpad_TYPED 0x40000000 /* Typed Lexical */
032d6771 214
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215#define SVf_IVisUV 0x80000000 /* use XPVUV instead of XPVIV */
216
217#define SVpfm_COMPILED 0x80000000 /* FORMLINE is compiled */
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218
219#define SVpbm_VALID 0x80000000
bbce6d69 220#define SVpbm_TAIL 0x40000000
8990e307 221
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222#define SVrepl_EVAL 0x40000000 /* Replacement part of s///e */
223
9660f481 224#define SVphv_CLONEABLE 0x08000000 /* for stashes: clone its objects */
4b5190b5 225#define SVphv_REHASH 0x10000000 /* HV is recalculating hash values */
6bfc225d 226#define SVphv_SHAREKEYS 0x20000000 /* keys live on shared string table */
51594c39 227#define SVphv_LAZYDEL 0x40000000 /* entry in xhv_eiter must be deleted */
19692e8d 228#define SVphv_HASKFLAGS 0x80000000 /* keys have flag byte after hash */
bf6bd887 229
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230#define SVprv_WEAKREF 0x80000000 /* Weak reference */
231
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232struct xrv {
233 SV * xrv_rv; /* pointer to another SV */
234};
235
79072805 236struct xpv {
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237 char * xpv_pv; /* pointer to malloced string */
238 STRLEN xpv_cur; /* length of xpv_pv as a C string */
239 STRLEN xpv_len; /* allocated size */
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240};
241
242struct xpviv {
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243 char * xpv_pv; /* pointer to malloced string */
244 STRLEN xpv_cur; /* length of xpv_pv as a C string */
245 STRLEN xpv_len; /* allocated size */
a0d0e21e 246 IV xiv_iv; /* integer value or pv offset */
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247};
248
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249struct xpvuv {
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 UV xuv_uv; /* unsigned value or pv offset */
254};
255
79072805 256struct xpvnv {
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257 char * xpv_pv; /* pointer to malloced string */
258 STRLEN xpv_cur; /* length of xpv_pv as a C string */
259 STRLEN xpv_len; /* allocated size */
a0d0e21e 260 IV xiv_iv; /* integer value or pv offset */
65202027 261 NV xnv_nv; /* numeric value, if any */
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262};
263
6ee623d5 264/* These structure must match the beginning of struct xpvhv in hv.h. */
79072805 265struct xpvmg {
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266 char * xpv_pv; /* pointer to malloced string */
267 STRLEN xpv_cur; /* length of xpv_pv as a C string */
268 STRLEN xpv_len; /* allocated size */
a0d0e21e 269 IV xiv_iv; /* integer value or pv offset */
65202027 270 NV xnv_nv; /* numeric value, if any */
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271 MAGIC* xmg_magic; /* linked list of magicalness */
272 HV* xmg_stash; /* class package */
273};
274
275struct xpvlv {
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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 */
8990e307 283
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284 /* a full glob fits into this */
285 GP* xgv_gp;
286 char* xgv_name;
287 STRLEN xgv_namelen;
288 HV* xgv_stash;
289 U8 xgv_flags;
290
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291 STRLEN xlv_targoff;
292 STRLEN xlv_targlen;
293 SV* xlv_targ;
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294 char xlv_type; /* k=keys .=pos x=substr v=vec /=join/re
295 * y=alem/helem/iter t=tie T=tied HE */
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296};
297
298struct xpvgv {
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299 char * xpv_pv; /* pointer to malloced string */
300 STRLEN xpv_cur; /* length of xpv_pv as a C string */
301 STRLEN xpv_len; /* allocated size */
a0d0e21e 302 IV xiv_iv; /* integer value or pv offset */
65202027 303 NV xnv_nv; /* numeric value, if any */
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304 MAGIC* xmg_magic; /* linked list of magicalness */
305 HV* xmg_stash; /* class package */
8990e307 306
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307 GP* xgv_gp;
308 char* xgv_name;
309 STRLEN xgv_namelen;
310 HV* xgv_stash;
a5f75d66 311 U8 xgv_flags;
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312};
313
314struct xpvbm {
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315 char * xpv_pv; /* pointer to malloced string */
316 STRLEN xpv_cur; /* length of xpv_pv as a C string */
317 STRLEN xpv_len; /* allocated size */
a0d0e21e 318 IV xiv_iv; /* integer value or pv offset */
65202027 319 NV xnv_nv; /* numeric value, if any */
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320 MAGIC* xmg_magic; /* linked list of magicalness */
321 HV* xmg_stash; /* class package */
8990e307 322
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323 I32 xbm_useful; /* is this constant pattern being useful? */
324 U16 xbm_previous; /* how many characters in string before rare? */
325 U8 xbm_rare; /* rarest character in string */
326};
327
fd40b977 328/* This structure must match XPVCV in cv.h */
44a8e56a 329
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330typedef U16 cv_flags_t;
331
79072805 332struct xpvfm {
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333 char * xpv_pv; /* pointer to malloced string */
334 STRLEN xpv_cur; /* length of xpv_pv as a C string */
335 STRLEN xpv_len; /* allocated size */
a0d0e21e 336 IV xiv_iv; /* integer value or pv offset */
65202027 337 NV xnv_nv; /* numeric value, if any */
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338 MAGIC* xmg_magic; /* linked list of magicalness */
339 HV* xmg_stash; /* class package */
8990e307 340
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341 HV * xcv_stash;
342 OP * xcv_start;
343 OP * xcv_root;
acfe0abc 344 void (*xcv_xsub)(pTHX_ CV*);
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345 ANY xcv_xsubany;
346 GV * xcv_gv;
57843af0 347 char * xcv_file;
b195d487 348 long xcv_depth; /* >= 2 indicates recursive call */
79072805 349 AV * xcv_padlist;
748a9306 350 CV * xcv_outside;
77a005ab 351 cv_flags_t xcv_flags;
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352 U32 xcv_outside_seq; /* the COP sequence (at the point of our
353 * compilation) in the lexically enclosing
354 * sub */
11a7ac70 355 IV xfm_lines;
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356};
357
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358struct xpvio {
359 char * xpv_pv; /* pointer to malloced string */
360 STRLEN xpv_cur; /* length of xpv_pv as a C string */
361 STRLEN xpv_len; /* allocated size */
a0d0e21e 362 IV xiv_iv; /* integer value or pv offset */
65202027 363 NV xnv_nv; /* numeric value, if any */
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364 MAGIC* xmg_magic; /* linked list of magicalness */
365 HV* xmg_stash; /* class package */
366
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367 PerlIO * xio_ifp; /* ifp and ofp are normally the same */
368 PerlIO * xio_ofp; /* but sockets need separate streams */
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369 /* Cray addresses everything by word boundaries (64 bits) and
370 * code and data pointers cannot be mixed (which is exactly what
371 * Perl_filter_add() tries to do with the dirp), hence the following
372 * union trick (as suggested by Gurusamy Sarathy).
373 * For further information see Geir Johansen's problem report titled
374 [ID 20000612.002] Perl problem on Cray system
375 * The any pointer (known as IoANY()) will also be a good place
376 * to hang any IO disciplines to.
377 */
378 union {
379 DIR * xiou_dirp; /* for opendir, readdir, etc */
380 void * xiou_any; /* for alignment */
381 } xio_dirpu;
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382 IV xio_lines; /* $. */
383 IV xio_page; /* $% */
384 IV xio_page_len; /* $= */
385 IV xio_lines_left; /* $- */
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386 char * xio_top_name; /* $^ */
387 GV * xio_top_gv; /* $^ */
388 char * xio_fmt_name; /* $~ */
389 GV * xio_fmt_gv; /* $~ */
390 char * xio_bottom_name;/* $^B */
391 GV * xio_bottom_gv; /* $^B */
392 short xio_subprocess; /* -| or |- */
393 char xio_type;
394 char xio_flags;
395};
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396#define xio_dirp xio_dirpu.xiou_dirp
397#define xio_any xio_dirpu.xiou_any
8990e307 398
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399#define IOf_ARGV 1 /* this fp iterates over ARGV */
400#define IOf_START 2 /* check for null ARGV and substitute '-' */
401#define IOf_FLUSH 4 /* this fp wants a flush after write op */
402#define IOf_DIDTOP 8 /* just did top of form */
403#define IOf_UNTAINT 16 /* consider this fp (and its data) "safe" */
404#define IOf_NOLINE 32 /* slurped a pseudo-line from empty file */
405#define IOf_FAKE_DIRP 64 /* xio_dirp is fake (source filters kludge) */
8990e307 406
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407/* The following macros define implementation-independent predicates on SVs. */
408
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409/*
410=for apidoc Am|bool|SvNIOK|SV* sv
411Returns a boolean indicating whether the SV contains a number, integer or
412double.
413
414=for apidoc Am|bool|SvNIOKp|SV* sv
415Returns a boolean indicating whether the SV contains a number, integer or
416double. Checks the B<private> setting. Use C<SvNIOK>.
417
418=for apidoc Am|void|SvNIOK_off|SV* sv
419Unsets the NV/IV status of an SV.
420
421=for apidoc Am|bool|SvOK|SV* sv
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422Returns a boolean indicating whether the value is an SV. It also tells
423whether the value is defined or not.
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424
425=for apidoc Am|bool|SvIOKp|SV* sv
426Returns a boolean indicating whether the SV contains an integer. Checks
427the B<private> setting. Use C<SvIOK>.
428
429=for apidoc Am|bool|SvNOKp|SV* sv
430Returns a boolean indicating whether the SV contains a double. Checks the
431B<private> setting. Use C<SvNOK>.
432
433=for apidoc Am|bool|SvPOKp|SV* sv
434Returns a boolean indicating whether the SV contains a character string.
435Checks the B<private> setting. Use C<SvPOK>.
436
437=for apidoc Am|bool|SvIOK|SV* sv
438Returns a boolean indicating whether the SV contains an integer.
439
440=for apidoc Am|void|SvIOK_on|SV* sv
441Tells an SV that it is an integer.
442
443=for apidoc Am|void|SvIOK_off|SV* sv
444Unsets the IV status of an SV.
445
446=for apidoc Am|void|SvIOK_only|SV* sv
447Tells an SV that it is an integer and disables all other OK bits.
448
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449=for apidoc Am|void|SvIOK_only_UV|SV* sv
450Tells and SV that it is an unsigned integer and disables all other OK bits.
451
12fa07df 452=for apidoc Am|bool|SvIOK_UV|SV* sv
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453Returns a boolean indicating whether the SV contains an unsigned integer.
454
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455=for apidoc Am|void|SvUOK|SV* sv
456Returns a boolean indicating whether the SV contains an unsigned integer.
457
12fa07df 458=for apidoc Am|bool|SvIOK_notUV|SV* sv
d1be9408 459Returns a boolean indicating whether the SV contains a signed integer.
e331fc52 460
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461=for apidoc Am|bool|SvNOK|SV* sv
462Returns a boolean indicating whether the SV contains a double.
463
464=for apidoc Am|void|SvNOK_on|SV* sv
465Tells an SV that it is a double.
466
467=for apidoc Am|void|SvNOK_off|SV* sv
468Unsets the NV status of an SV.
469
470=for apidoc Am|void|SvNOK_only|SV* sv
471Tells an SV that it is a double and disables all other OK bits.
472
473=for apidoc Am|bool|SvPOK|SV* sv
474Returns a boolean indicating whether the SV contains a character
475string.
476
477=for apidoc Am|void|SvPOK_on|SV* sv
478Tells an SV that it is a string.
479
480=for apidoc Am|void|SvPOK_off|SV* sv
481Unsets the PV status of an SV.
482
483=for apidoc Am|void|SvPOK_only|SV* sv
484Tells an SV that it is a string and disables all other OK bits.
1e54db1a 485Will also turn off the UTF-8 status.
954c1994 486
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487=for apidoc Am|bool|SvVOK|SV* sv
488Returns a boolean indicating whether the SV contains a v-string.
489
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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()>.
954c1994
GS
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
954c1994
GS
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
5dc8bdac 549#if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
29e97371 550#define assert_not_ROK(sv) ({assert(!SvROK(sv) || !SvRV(sv));}),
906ed6d6 551#else
54866b45 552#define assert_not_ROK(sv)
906ed6d6
NC
553#endif
554
463ee0b2 555#define SvOK(sv) (SvFLAGS(sv) & SVf_OK)
54866b45 556#define SvOK_off(sv) (assert_not_ROK(sv) \
906ed6d6 557 SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \
d41ff1b8 558 SVf_IVisUV|SVf_UTF8), \
25da4f38 559 SvOOK_off(sv))
54866b45 560#define SvOK_off_exc_UV(sv) (assert_not_ROK(sv) \
906ed6d6 561 SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \
d41ff1b8 562 SVf_UTF8), \
a0d0e21e 563 SvOOK_off(sv))
79072805 564
8990e307
LW
565#define SvOKp(sv) (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK))
566#define SvIOKp(sv) (SvFLAGS(sv) & SVp_IOK)
46187eeb 567#define SvIOKp_on(sv) (SvRELEASE_IVX(sv), \
765f542d 568 SvFLAGS(sv) |= SVp_IOK)
8990e307
LW
569#define SvNOKp(sv) (SvFLAGS(sv) & SVp_NOK)
570#define SvNOKp_on(sv) (SvFLAGS(sv) |= SVp_NOK)
571#define SvPOKp(sv) (SvFLAGS(sv) & SVp_POK)
54866b45 572#define SvPOKp_on(sv) (assert_not_ROK(sv) \
906ed6d6 573 SvFLAGS(sv) |= SVp_POK)
463ee0b2 574
79072805 575#define SvIOK(sv) (SvFLAGS(sv) & SVf_IOK)
46187eeb 576#define SvIOK_on(sv) (SvRELEASE_IVX(sv), \
765f542d 577 SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
25da4f38 578#define SvIOK_off(sv) (SvFLAGS(sv) &= ~(SVf_IOK|SVp_IOK|SVf_IVisUV))
0c34ef67 579#define SvIOK_only(sv) (SvOK_off(sv), \
a0d0e21e 580 SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
0c34ef67 581#define SvIOK_only_UV(sv) (SvOK_off_exc_UV(sv), \
25da4f38 582 SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
70401c6b 583
25da4f38
IZ
584#define SvIOK_UV(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV)) \
585 == (SVf_IOK|SVf_IVisUV))
28e5dec8 586#define SvUOK(sv) SvIOK_UV(sv)
25da4f38
IZ
587#define SvIOK_notUV(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV)) \
588 == SVf_IOK)
589
590#define SvIsUV(sv) (SvFLAGS(sv) & SVf_IVisUV)
591#define SvIsUV_on(sv) (SvFLAGS(sv) |= SVf_IVisUV)
592#define SvIsUV_off(sv) (SvFLAGS(sv) &= ~SVf_IVisUV)
79072805
LW
593
594#define SvNOK(sv) (SvFLAGS(sv) & SVf_NOK)
a0d0e21e 595#define SvNOK_on(sv) (SvFLAGS(sv) |= (SVf_NOK|SVp_NOK))
8990e307 596#define SvNOK_off(sv) (SvFLAGS(sv) &= ~(SVf_NOK|SVp_NOK))
0c34ef67 597#define SvNOK_only(sv) (SvOK_off(sv), \
a0d0e21e 598 SvFLAGS(sv) |= (SVf_NOK|SVp_NOK))
79072805 599
914184e1 600/*
12fa07df 601=for apidoc Am|bool|SvUTF8|SV* sv
914184e1
JH
602Returns a boolean indicating whether the SV contains UTF-8 encoded data.
603
604=for apidoc Am|void|SvUTF8_on|SV *sv
1e54db1a 605Turn on the UTF-8 status of an SV (the data is not changed, just the flag).
d5ce4a7c 606Do not use frivolously.
914184e1
JH
607
608=for apidoc Am|void|SvUTF8_off|SV *sv
1e54db1a 609Unsets the UTF-8 status of an SV.
914184e1
JH
610
611=for apidoc Am|void|SvPOK_only_UTF8|SV* sv
d5ce4a7c 612Tells an SV that it is a string and disables all other OK bits,
1e54db1a 613and leaves the UTF-8 status as it was.
f1a1024e 614
914184e1
JH
615=cut
616 */
617
7a5fd60d
NC
618/* Ensure the return value of this macro does not clash with the GV_ADD* flags
619in gv.h: */
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)
54866b45 625#define SvPOK_on(sv) (assert_not_ROK(sv) \
906ed6d6 626 SvFLAGS(sv) |= (SVf_POK|SVp_POK))
8990e307 627#define SvPOK_off(sv) (SvFLAGS(sv) &= ~(SVf_POK|SVp_POK))
54866b45 628#define SvPOK_only(sv) (assert_not_ROK(sv) \
906ed6d6 629 SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \
d41ff1b8
GS
630 SVf_IVisUV|SVf_UTF8), \
631 SvFLAGS(sv) |= (SVf_POK|SVp_POK))
54866b45 632#define SvPOK_only_UTF8(sv) (assert_not_ROK(sv) \
906ed6d6 633 SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \
d41ff1b8 634 SVf_IVisUV), \
a0d0e21e 635 SvFLAGS(sv) |= (SVf_POK|SVp_POK))
79072805 636
b0f01acb 637#define SvVOK(sv) (SvMAGICAL(sv) && mg_find(sv,'V'))
79072805 638#define SvOOK(sv) (SvFLAGS(sv) & SVf_OOK)
155aba94 639#define SvOOK_on(sv) ((void)SvIOK_off(sv), SvFLAGS(sv) |= SVf_OOK)
0c34ef67 640#define SvOOK_off(sv) ((void)(SvOOK(sv) && sv_backoff(sv)))
79072805 641
a0d0e21e
LW
642#define SvFAKE(sv) (SvFLAGS(sv) & SVf_FAKE)
643#define SvFAKE_on(sv) (SvFLAGS(sv) |= SVf_FAKE)
644#define SvFAKE_off(sv) (SvFLAGS(sv) &= ~SVf_FAKE)
645
ed6116ce 646#define SvROK(sv) (SvFLAGS(sv) & SVf_ROK)
a0d0e21e 647#define SvROK_on(sv) (SvFLAGS(sv) |= SVf_ROK)
a0d0e21e 648#define SvROK_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK|SVf_AMAGIC))
79072805 649
8990e307
LW
650#define SvMAGICAL(sv) (SvFLAGS(sv) & (SVs_GMG|SVs_SMG|SVs_RMG))
651#define SvMAGICAL_on(sv) (SvFLAGS(sv) |= (SVs_GMG|SVs_SMG|SVs_RMG))
652#define SvMAGICAL_off(sv) (SvFLAGS(sv) &= ~(SVs_GMG|SVs_SMG|SVs_RMG))
79072805 653
8990e307
LW
654#define SvGMAGICAL(sv) (SvFLAGS(sv) & SVs_GMG)
655#define SvGMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_GMG)
656#define SvGMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_GMG)
ed6116ce 657
8990e307
LW
658#define SvSMAGICAL(sv) (SvFLAGS(sv) & SVs_SMG)
659#define SvSMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_SMG)
660#define SvSMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_SMG)
ed6116ce 661
8990e307
LW
662#define SvRMAGICAL(sv) (SvFLAGS(sv) & SVs_RMG)
663#define SvRMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_RMG)
664#define SvRMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_RMG)
ed6116ce 665
9e7bc3e8
JD
666#define SvAMAGIC(sv) (SvFLAGS(sv) & SVf_AMAGIC)
667#define SvAMAGIC_on(sv) (SvFLAGS(sv) |= SVf_AMAGIC)
668#define SvAMAGIC_off(sv) (SvFLAGS(sv) &= ~SVf_AMAGIC)
a0d0e21e 669
8cf8f3d1 670#define SvGAMAGIC(sv) (SvFLAGS(sv) & (SVs_GMG|SVf_AMAGIC))
1426bbf4 671
a0d0e21e
LW
672/*
673#define Gv_AMG(stash) \
674 (HV_AMAGICmb(stash) && \
675 ((!HV_AMAGICbad(stash) && HV_AMAGIC(stash)) || Gv_AMupdate(stash)))
676*/
3280af22 677#define Gv_AMG(stash) (PL_amagic_generation && Gv_AMupdate(stash))
a0d0e21e 678
810b8aa5
GS
679#define SvWEAKREF(sv) ((SvFLAGS(sv) & (SVf_ROK|SVprv_WEAKREF)) \
680 == (SVf_ROK|SVprv_WEAKREF))
681#define SvWEAKREF_on(sv) (SvFLAGS(sv) |= (SVf_ROK|SVprv_WEAKREF))
682#define SvWEAKREF_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK|SVprv_WEAKREF))
683
a0d0e21e 684#define SvTHINKFIRST(sv) (SvFLAGS(sv) & SVf_THINKFIRST)
ed6116ce 685
d9d18af6
DM
686#define SvPADSTALE(sv) (SvFLAGS(sv) & SVs_PADSTALE)
687#define SvPADSTALE_on(sv) (SvFLAGS(sv) |= SVs_PADSTALE)
688#define SvPADSTALE_off(sv) (SvFLAGS(sv) &= ~SVs_PADSTALE)
689
8990e307 690#define SvPADTMP(sv) (SvFLAGS(sv) & SVs_PADTMP)
235cc2e3 691#define SvPADTMP_on(sv) (SvFLAGS(sv) |= SVs_PADTMP)
8990e307 692#define SvPADTMP_off(sv) (SvFLAGS(sv) &= ~SVs_PADTMP)
ed6116ce 693
8990e307 694#define SvPADMY(sv) (SvFLAGS(sv) & SVs_PADMY)
235cc2e3 695#define SvPADMY_on(sv) (SvFLAGS(sv) |= SVs_PADMY)
ed6116ce 696
8990e307
LW
697#define SvTEMP(sv) (SvFLAGS(sv) & SVs_TEMP)
698#define SvTEMP_on(sv) (SvFLAGS(sv) |= SVs_TEMP)
699#define SvTEMP_off(sv) (SvFLAGS(sv) &= ~SVs_TEMP)
79072805 700
8990e307
LW
701#define SvOBJECT(sv) (SvFLAGS(sv) & SVs_OBJECT)
702#define SvOBJECT_on(sv) (SvFLAGS(sv) |= SVs_OBJECT)
703#define SvOBJECT_off(sv) (SvFLAGS(sv) &= ~SVs_OBJECT)
79072805 704
8990e307
LW
705#define SvREADONLY(sv) (SvFLAGS(sv) & SVf_READONLY)
706#define SvREADONLY_on(sv) (SvFLAGS(sv) |= SVf_READONLY)
707#define SvREADONLY_off(sv) (SvFLAGS(sv) &= ~SVf_READONLY)
79072805 708
8990e307
LW
709#define SvSCREAM(sv) (SvFLAGS(sv) & SVp_SCREAM)
710#define SvSCREAM_on(sv) (SvFLAGS(sv) |= SVp_SCREAM)
711#define SvSCREAM_off(sv) (SvFLAGS(sv) &= ~SVp_SCREAM)
79072805 712
8990e307
LW
713#define SvCOMPILED(sv) (SvFLAGS(sv) & SVpfm_COMPILED)
714#define SvCOMPILED_on(sv) (SvFLAGS(sv) |= SVpfm_COMPILED)
715#define SvCOMPILED_off(sv) (SvFLAGS(sv) &= ~SVpfm_COMPILED)
79072805 716
25da4f38
IZ
717#define SvEVALED(sv) (SvFLAGS(sv) & SVrepl_EVAL)
718#define SvEVALED_on(sv) (SvFLAGS(sv) |= SVrepl_EVAL)
719#define SvEVALED_off(sv) (SvFLAGS(sv) &= ~SVrepl_EVAL)
720
8990e307
LW
721#define SvTAIL(sv) (SvFLAGS(sv) & SVpbm_TAIL)
722#define SvTAIL_on(sv) (SvFLAGS(sv) |= SVpbm_TAIL)
723#define SvTAIL_off(sv) (SvFLAGS(sv) &= ~SVpbm_TAIL)
724
8990e307
LW
725#define SvVALID(sv) (SvFLAGS(sv) & SVpbm_VALID)
726#define SvVALID_on(sv) (SvFLAGS(sv) |= SVpbm_VALID)
727#define SvVALID_off(sv) (SvFLAGS(sv) &= ~SVpbm_VALID)
728
1cc8b4c5
AB
729#ifdef USE_ITHREADS
730/* The following uses the FAKE flag to show that a regex pointer is infact
8ca6097c 731 its own offset in the regexpad for ithreads */
1cc8b4c5
AB
732#define SvREPADTMP(sv) (SvFLAGS(sv) & SVf_FAKE)
733#define SvREPADTMP_on(sv) (SvFLAGS(sv) |= SVf_FAKE)
734#define SvREPADTMP_off(sv) (SvFLAGS(sv) &= ~SVf_FAKE)
735#endif
736
ed6116ce
LW
737#define SvRV(sv) ((XRV*) SvANY(sv))->xrv_rv
738#define SvRVx(sv) SvRV(sv)
739
f599b64b 740#ifdef PERL_DEBUG_COW
b19bbeda 741#define SvIVX(sv) (0 + ((XPVIV*) SvANY(sv))->xiv_iv)
379d1ffd 742#define SvUVX(sv) (0 + (XPVUV*) SvANY(sv))->xuv_uv
b19bbeda 743#define SvNVX(sv) (0.0 + ((XPVNV*)SvANY(sv))->xnv_nv)
379d1ffd 744#define SvPVX(sv) (0 + ((XPV*) SvANY(sv))->xpv_pv)
f599b64b 745#else
b19bbeda
NC
746#define SvIVX(sv) ((XPVIV*) SvANY(sv))->xiv_iv
747#define SvUVX(sv) ((XPVUV*) SvANY(sv))->xuv_uv
748#define SvNVX(sv) ((XPVNV*)SvANY(sv))->xnv_nv
379d1ffd 749#define SvPVX(sv) ((XPV*) SvANY(sv))->xpv_pv
f599b64b 750#endif
79072805 751#define SvCUR(sv) ((XPV*) SvANY(sv))->xpv_cur
79072805 752#define SvLEN(sv) ((XPV*) SvANY(sv))->xpv_len
79072805 753#define SvEND(sv)(((XPV*) SvANY(sv))->xpv_pv + ((XPV*)SvANY(sv))->xpv_cur)
f599b64b
NC
754
755#define SvIVXx(sv) SvIVX(sv)
756#define SvUVXx(sv) SvUVX(sv)
757#define SvNVXx(sv) SvNVX(sv)
758#define SvPVXx(sv) SvPVX(sv)
759#define SvLENx(sv) SvLEN(sv)
6b88bc9c 760#define SvENDx(sv) ((PL_Sv = (sv)), SvEND(PL_Sv))
ffb05e06
NC
761
762#ifdef DEBUGGING
2b057284
NC
763#define SvMAGIC(sv) (*(assert(SvTYPE(sv) >= SVt_PVMG), &((XPVMG*) SvANY(sv))->xmg_magic))
764#define SvSTASH(sv) (*(assert(SvTYPE(sv) >= SVt_PVMG), &((XPVMG*) SvANY(sv))->xmg_stash))
ffb05e06 765#else
79072805
LW
766#define SvMAGIC(sv) ((XPVMG*) SvANY(sv))->xmg_magic
767#define SvSTASH(sv) ((XPVMG*) SvANY(sv))->xmg_stash
ffb05e06 768#endif
79072805 769
28e5dec8
JH
770/* Ask a scalar nicely to try to become an IV, if possible.
771 Not guaranteed to stay returning void */
772/* Macro won't actually call sv_2iv if already IOK */
773#define SvIV_please(sv) \
774 STMT_START {if (!SvIOKp(sv) && (SvNOK(sv) || SvPOK(sv))) \
775 (void) SvIV(sv); } STMT_END
79072805 776#define SvIV_set(sv, val) \
80b92232 777 STMT_START { assert(SvTYPE(sv) == SVt_IV || SvTYPE(sv) >= SVt_PVIV); \
b19bbeda 778 (((XPVIV*) SvANY(sv))->xiv_iv = (val)); } STMT_END
79072805 779#define SvNV_set(sv, val) \
80b92232 780 STMT_START { assert(SvTYPE(sv) == SVt_NV || SvTYPE(sv) >= SVt_PVNV); \
f599b64b 781 (((XPVNV*)SvANY(sv))->xnv_nv = (val)); } STMT_END
79072805 782#define SvPV_set(sv, val) \
80b92232 783 STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
379d1ffd 784 (((XPV*) SvANY(sv))->xpv_pv = (val)); } STMT_END
607fa7f2
SP
785#define SvUV_set(sv, val) \
786 STMT_START { assert(SvTYPE(sv) == SVt_IV || SvTYPE(sv) >= SVt_PVIV); \
787 (((XPVUV*)SvANY(sv))->xuv_uv = (val)); } STMT_END
79072805 788#define SvCUR_set(sv, val) \
80b92232 789 STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
781fdd31 790 (SvCUR(sv) = (val)); } STMT_END
79072805 791#define SvLEN_set(sv, val) \
80b92232 792 STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
781fdd31 793 (SvLEN(sv) = (val)); } STMT_END
79072805 794#define SvEND_set(sv, val) \
80b92232 795 STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
781fdd31 796 (SvCUR(sv) = (val) - SvPVX(sv)); } STMT_END
79072805 797
b7e9a5c2 798#define SvPV_renew(sv,n) \
1da4ca5f
NC
799 STMT_START { SvLEN_set(sv, n); \
800 SvPV_set((sv), (MEM_WRAP_CHECK_(n,char) \
801 (char*)saferealloc((Malloc_t)SvPVX(sv), \
802 (MEM_SIZE)((n))))); \
803 } STMT_END
804
805#define SvPV_shrink_to_cur(sv) STMT_START { \
806 const STRLEN _lEnGtH = SvCUR(sv) + 1; \
807 SvPV_renew(sv, _lEnGtH); \
808 } STMT_END
b7e9a5c2 809
79072805
LW
810#define BmRARE(sv) ((XPVBM*) SvANY(sv))->xbm_rare
811#define BmUSEFUL(sv) ((XPVBM*) SvANY(sv))->xbm_useful
812#define BmPREVIOUS(sv) ((XPVBM*) SvANY(sv))->xbm_previous
813
814#define FmLINES(sv) ((XPVFM*) SvANY(sv))->xfm_lines
815
816#define LvTYPE(sv) ((XPVLV*) SvANY(sv))->xlv_type
817#define LvTARG(sv) ((XPVLV*) SvANY(sv))->xlv_targ
818#define LvTARGOFF(sv) ((XPVLV*) SvANY(sv))->xlv_targoff
819#define LvTARGLEN(sv) ((XPVLV*) SvANY(sv))->xlv_targlen
820
8990e307
LW
821#define IoIFP(sv) ((XPVIO*) SvANY(sv))->xio_ifp
822#define IoOFP(sv) ((XPVIO*) SvANY(sv))->xio_ofp
823#define IoDIRP(sv) ((XPVIO*) SvANY(sv))->xio_dirp
4755096e 824#define IoANY(sv) ((XPVIO*) SvANY(sv))->xio_any
8990e307
LW
825#define IoLINES(sv) ((XPVIO*) SvANY(sv))->xio_lines
826#define IoPAGE(sv) ((XPVIO*) SvANY(sv))->xio_page
827#define IoPAGE_LEN(sv) ((XPVIO*) SvANY(sv))->xio_page_len
828#define IoLINES_LEFT(sv)((XPVIO*) SvANY(sv))->xio_lines_left
829#define IoTOP_NAME(sv) ((XPVIO*) SvANY(sv))->xio_top_name
830#define IoTOP_GV(sv) ((XPVIO*) SvANY(sv))->xio_top_gv
831#define IoFMT_NAME(sv) ((XPVIO*) SvANY(sv))->xio_fmt_name
832#define IoFMT_GV(sv) ((XPVIO*) SvANY(sv))->xio_fmt_gv
833#define IoBOTTOM_NAME(sv)((XPVIO*) SvANY(sv))->xio_bottom_name
834#define IoBOTTOM_GV(sv) ((XPVIO*) SvANY(sv))->xio_bottom_gv
835#define IoSUBPROCESS(sv)((XPVIO*) SvANY(sv))->xio_subprocess
836#define IoTYPE(sv) ((XPVIO*) SvANY(sv))->xio_type
837#define IoFLAGS(sv) ((XPVIO*) SvANY(sv))->xio_flags
838
50952442 839/* IoTYPE(sv) is a single character telling the type of I/O connection. */
3b6c1aba
JH
840#define IoTYPE_RDONLY '<'
841#define IoTYPE_WRONLY '>'
842#define IoTYPE_RDWR '+'
843#define IoTYPE_APPEND 'a'
844#define IoTYPE_PIPE '|'
845#define IoTYPE_STD '-' /* stdin or stdout */
846#define IoTYPE_SOCKET 's'
847#define IoTYPE_CLOSED ' '
848#define IoTYPE_IMPLICIT 'I' /* stdin or stdout or stderr */
849#define IoTYPE_NUMERIC '#' /* fdopen */
03fcf2fc
GS
850
851/*
954c1994
GS
852=for apidoc Am|bool|SvTAINTED|SV* sv
853Checks to see if an SV is tainted. Returns TRUE if it is, FALSE if
854not.
855
856=for apidoc Am|void|SvTAINTED_on|SV* sv
c55831ac 857Marks an SV as tainted if tainting is enabled.
954c1994
GS
858
859=for apidoc Am|void|SvTAINTED_off|SV* sv
860Untaints an SV. Be I<very> careful with this routine, as it short-circuits
861some of Perl's fundamental security features. XS module authors should not
862use this function unless they fully understand all the implications of
863unconditionally untainting the value. Untainting should be done in the
864standard perl fashion, via a carefully crafted regexp, rather than directly
865untainting variables.
866
867=for apidoc Am|void|SvTAINT|SV* sv
c55831ac 868Taints an SV if tainting is enabled.
954c1994
GS
869
870=cut
871*/
872
bbce6d69 873#define SvTAINTED(sv) (SvMAGICAL(sv) && sv_tainted(sv))
3280af22
NIS
874#define SvTAINTED_on(sv) STMT_START{ if(PL_tainting){sv_taint(sv);} }STMT_END
875#define SvTAINTED_off(sv) STMT_START{ if(PL_tainting){sv_untaint(sv);} }STMT_END
bbce6d69 876
c6ee37c5
MB
877#define SvTAINT(sv) \
878 STMT_START { \
3280af22 879 if (PL_tainting) { \
3280af22 880 if (PL_tainted) \
c6ee37c5
MB
881 SvTAINTED_on(sv); \
882 } \
883 } STMT_END
79072805 884
954c1994
GS
885/*
886=for apidoc Am|char*|SvPV_force|SV* sv|STRLEN len
5f08bad4
ST
887Like C<SvPV> but will force the SV into containing just a string
888(C<SvPOK_only>). You want force if you are going to update the C<SvPVX>
889directly.
954c1994 890
645c22ef 891=for apidoc Am|char*|SvPV_force_nomg|SV* sv|STRLEN len
5f08bad4
ST
892Like C<SvPV> but will force the SV into containing just a string
893(C<SvPOK_only>). You want force if you are going to update the C<SvPVX>
894directly. Doesn't process magic.
645c22ef 895
954c1994 896=for apidoc Am|char*|SvPV|SV* sv|STRLEN len
5f08bad4
ST
897Returns a pointer to the string in the SV, or a stringified form of
898the SV if the SV does not contain a string. The SV may cache the
899stringified version becoming C<SvPOK>. Handles 'get' magic. See also
645c22ef
DM
900C<SvPVx> for a version which guarantees to evaluate sv only once.
901
902=for apidoc Am|char*|SvPVx|SV* sv|STRLEN len
903A version of C<SvPV> which guarantees to evaluate sv only once.
954c1994 904
891f9566
YST
905=for apidoc Am|char*|SvPV_nomg|SV* sv|STRLEN len
906Like C<SvPV> but doesn't process magic.
907
954c1994 908=for apidoc Am|char*|SvPV_nolen|SV* sv
5f08bad4
ST
909Returns a pointer to the string in the SV, or a stringified form of
910the SV if the SV does not contain a string. The SV may cache the
911stringified form becoming C<SvPOK>. Handles 'get' magic.
954c1994
GS
912
913=for apidoc Am|IV|SvIV|SV* sv
645c22ef
DM
914Coerces the given SV to an integer and returns it. See C<SvIVx> for a
915version which guarantees to evaluate sv only once.
916
891f9566
YST
917=for apidoc Am|IV|SvIV_nomg|SV* sv
918Like C<SvIV> but doesn't process magic.
919
645c22ef
DM
920=for apidoc Am|IV|SvIVx|SV* sv
921Coerces the given SV to an integer and returns it. Guarantees to evaluate
d1be9408 922sv only once. Use the more efficient C<SvIV> otherwise.
954c1994
GS
923
924=for apidoc Am|NV|SvNV|SV* sv
645c22ef
DM
925Coerce the given SV to a double and return it. See C<SvNVx> for a version
926which guarantees to evaluate sv only once.
927
928=for apidoc Am|NV|SvNVx|SV* sv
929Coerces the given SV to a double and returns it. Guarantees to evaluate
d1be9408 930sv only once. Use the more efficient C<SvNV> otherwise.
954c1994
GS
931
932=for apidoc Am|UV|SvUV|SV* sv
645c22ef
DM
933Coerces the given SV to an unsigned integer and returns it. See C<SvUVx>
934for a version which guarantees to evaluate sv only once.
935
891f9566
YST
936=for apidoc Am|UV|SvUV_nomg|SV* sv
937Like C<SvUV> but doesn't process magic.
938
645c22ef
DM
939=for apidoc Am|UV|SvUVx|SV* sv
940Coerces the given SV to an unsigned integer and returns it. Guarantees to
d1be9408 941evaluate sv only once. Use the more efficient C<SvUV> otherwise.
954c1994
GS
942
943=for apidoc Am|bool|SvTRUE|SV* sv
944Returns a boolean indicating whether Perl would evaluate the SV as true or
945false, defined or undefined. Does not handle 'get' magic.
946
645c22ef 947=for apidoc Am|char*|SvPVutf8_force|SV* sv|STRLEN len
b70b15d2 948Like C<SvPV_force>, but converts sv to utf8 first if necessary.
645c22ef
DM
949
950=for apidoc Am|char*|SvPVutf8|SV* sv|STRLEN len
b70b15d2 951Like C<SvPV>, but converts sv to utf8 first if necessary.
645c22ef 952
b70b15d2
TJ
953=for apidoc Am|char*|SvPVutf8_nolen|SV* sv
954Like C<SvPV_nolen>, but converts sv to utf8 first if necessary.
645c22ef
DM
955
956=for apidoc Am|char*|SvPVbyte_force|SV* sv|STRLEN len
957Like C<SvPV_force>, but converts sv to byte representation first if necessary.
958
959=for apidoc Am|char*|SvPVbyte|SV* sv|STRLEN len
960Like C<SvPV>, but converts sv to byte representation first if necessary.
961
b70b15d2 962=for apidoc Am|char*|SvPVbyte_nolen|SV* sv
645c22ef
DM
963Like C<SvPV_nolen>, but converts sv to byte representation first if necessary.
964
965=for apidoc Am|char*|SvPVutf8x_force|SV* sv|STRLEN len
b70b15d2 966Like C<SvPV_force>, but converts sv to utf8 first if necessary.
d1be9408 967Guarantees to evaluate sv only once; use the more efficient C<SvPVutf8_force>
645c22ef
DM
968otherwise.
969
970=for apidoc Am|char*|SvPVutf8x|SV* sv|STRLEN len
b70b15d2 971Like C<SvPV>, but converts sv to utf8 first if necessary.
d1be9408 972Guarantees to evaluate sv only once; use the more efficient C<SvPVutf8>
645c22ef
DM
973otherwise.
974
975=for apidoc Am|char*|SvPVbytex_force|SV* sv|STRLEN len
976Like C<SvPV_force>, but converts sv to byte representation first if necessary.
d1be9408 977Guarantees to evaluate sv only once; use the more efficient C<SvPVbyte_force>
645c22ef
DM
978otherwise.
979
980=for apidoc Am|char*|SvPVbytex|SV* sv|STRLEN len
981Like C<SvPV>, but converts sv to byte representation first if necessary.
d1be9408 982Guarantees to evaluate sv only once; use the more efficient C<SvPVbyte>
645c22ef
DM
983otherwise.
984
19dbb8f1
NC
985=for apidoc Am|bool|SvIsCOW|SV* sv
986Returns a boolean indicating whether the SV is Copy-On-Write. (either shared
987hash key scalars, or full Copy On Write scalars if 5.9.0 is configured for
988COW)
989
990=for apidoc Am|bool|SvIsCOW_shared_hash|SV* sv
991Returns a boolean indicating whether the SV is Copy-On-Write shared hash key
992scalar.
645c22ef 993
0f76ff59
MHM
994=for apidoc Am|void|sv_catpvn_nomg|SV* sv|const char* ptr|STRLEN len
995Like C<sv_catpvn> but doesn't process magic.
996
997=for apidoc Am|void|sv_setsv_nomg|SV* dsv|SV* ssv
998Like C<sv_setsv> but doesn't process magic.
999
1000=for apidoc Am|void|sv_catsv_nomg|SV* dsv|SV* ssv
1001Like C<sv_catsv> but doesn't process magic.
1002
954c1994
GS
1003=cut
1004*/
1005
25da4f38 1006/* Let us hope that bitmaps for UV and IV are the same */
463ee0b2 1007#define SvIV(sv) (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv))
ff68c719 1008#define SvUV(sv) (SvIOK(sv) ? SvUVX(sv) : sv_2uv(sv))
463ee0b2 1009#define SvNV(sv) (SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv))
79072805 1010
891f9566
YST
1011#define SvIV_nomg(sv) (SvIOK(sv) ? SvIVX(sv) : sv_2iv_flags(sv, 0))
1012#define SvUV_nomg(sv) (SvIOK(sv) ? SvUVX(sv) : sv_2uv_flags(sv, 0))
1013
baca2b92 1014/* ----*/
8d6d96c1 1015
8d6d96c1
HS
1016#define SvPV(sv, lp) SvPV_flags(sv, lp, SV_GMAGIC)
1017
8d6d96c1
HS
1018#define SvPV_flags(sv, lp, flags) \
1019 ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \
1020 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pv_flags(sv, &lp, flags))
79072805 1021
8d6d96c1 1022#define SvPV_force(sv, lp) SvPV_force_flags(sv, lp, SV_GMAGIC)
baca2b92 1023
8d6d96c1
HS
1024#define SvPV_force_nomg(sv, lp) SvPV_force_flags(sv, lp, 0)
1025
8d6d96c1 1026#define SvPV_force_flags(sv, lp, flags) \
ff68c719 1027 ((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST)) == SVf_POK \
8d6d96c1 1028 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvn_force_flags(sv, &lp, flags))
a0d0e21e 1029
1fa8b10d 1030#define SvPV_nolen(sv) \
5bc28da9
NIS
1031 ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \
1032 ? SvPVX(sv) : sv_2pv_nolen(sv))
70401c6b 1033
baca2b92 1034#define SvPV_nomg(sv, lp) SvPV_flags(sv, lp, 0)
5bc28da9 1035
baca2b92 1036/* ----*/
70401c6b 1037
5bc28da9
NIS
1038#define SvPVutf8(sv, lp) \
1039 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK|SVf_UTF8) \
1040 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pvutf8(sv, &lp))
70401c6b 1041
5bc28da9 1042#define SvPVutf8_force(sv, lp) \
70401c6b 1043 ((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST)) == (SVf_POK|SVf_UTF8) \
5bc28da9
NIS
1044 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvutf8n_force(sv, &lp))
1045
baca2b92 1046
5bc28da9
NIS
1047#define SvPVutf8_nolen(sv) \
1048 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK|SVf_UTF8)\
1049 ? SvPVX(sv) : sv_2pvutf8_nolen(sv))
70401c6b 1050
baca2b92
DM
1051/* ----*/
1052
5bc28da9
NIS
1053#define SvPVbyte(sv, lp) \
1054 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK) \
1055 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pvbyte(sv, &lp))
70401c6b 1056
5bc28da9
NIS
1057#define SvPVbyte_force(sv, lp) \
1058 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVf_THINKFIRST)) == (SVf_POK) \
a7ec4e2e 1059 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvbyten_force(sv, &lp))
5bc28da9 1060
5bc28da9
NIS
1061#define SvPVbyte_nolen(sv) \
1062 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK)\
1063 ? SvPVX(sv) : sv_2pvbyte_nolen(sv))
70401c6b 1064
1fa8b10d 1065
baca2b92
DM
1066
1067/* define FOOx(): idempotent versions of FOO(). If possible, use a local
1068 * var to evaluate the arg once; failing that, use a global if possible;
1069 * failing that, call a function to do the work
1070 */
1071
1072#define SvPVx_force(sv, lp) sv_pvn_force(sv, &lp)
1073#define SvPVutf8x_force(sv, lp) sv_pvutf8n_force(sv, &lp)
1074#define SvPVbytex_force(sv, lp) sv_pvbyten_force(sv, &lp)
1075
5dc8bdac 1076#if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
baca2b92 1077
3de3296f
AE
1078# define SvIVx(sv) ({SV *_sv = (SV*)(sv); SvIV(_sv); })
1079# define SvUVx(sv) ({SV *_sv = (SV*)(sv); SvUV(_sv); })
1080# define SvNVx(sv) ({SV *_sv = (SV*)(sv); SvNV(_sv); })
1081# define SvPVx(sv, lp) ({SV *_sv = (sv); SvPV(_sv, lp); })
1082# define SvPVutf8x(sv, lp) ({SV *_sv = (sv); SvPVutf8(_sv, lp); })
1083# define SvPVbytex(sv, lp) ({SV *_sv = (sv); SvPVbyte(_sv, lp); })
a80f87c4 1084# define SvTRUE(sv) ( \
8990e307
LW
1085 !sv \
1086 ? 0 \
1087 : SvPOK(sv) \
a80f87c4
GS
1088 ? (({XPV *nxpv = (XPV*)SvANY(sv); \
1089 nxpv && \
c2f1de04 1090 (nxpv->xpv_cur > 1 || \
a80f87c4 1091 (nxpv->xpv_cur && *nxpv->xpv_pv != '0')); }) \
79072805
LW
1092 ? 1 \
1093 : 0) \
1094 : \
1095 SvIOK(sv) \
463ee0b2 1096 ? SvIVX(sv) != 0 \
79072805 1097 : SvNOK(sv) \
463ee0b2
LW
1098 ? SvNVX(sv) != 0.0 \
1099 : sv_2bool(sv) )
3de3296f 1100# define SvTRUEx(sv) ({SV *_sv = (sv); SvTRUE(_sv); })
baca2b92 1101
a80f87c4 1102#else /* __GNUC__ */
baca2b92 1103
a80f87c4
GS
1104/* These inlined macros use globals, which will require a thread
1105 * declaration in user code, so we avoid them under threads */
1106
3db8f154
MB
1107# define SvIVx(sv) ((PL_Sv = (sv)), SvIV(PL_Sv))
1108# define SvUVx(sv) ((PL_Sv = (sv)), SvUV(PL_Sv))
1109# define SvNVx(sv) ((PL_Sv = (sv)), SvNV(PL_Sv))
1110# define SvPVx(sv, lp) ((PL_Sv = (sv)), SvPV(PL_Sv, lp))
1111# define SvPVutf8x(sv, lp) ((PL_Sv = (sv)), SvPVutf8(PL_Sv, lp))
1112# define SvPVbytex(sv, lp) ((PL_Sv = (sv)), SvPVbyte(PL_Sv, lp))
1113# define SvTRUE(sv) ( \
a80f87c4
GS
1114 !sv \
1115 ? 0 \
1116 : SvPOK(sv) \
6b88bc9c 1117 ? ((PL_Xpv = (XPV*)SvANY(sv)) && \
c2f1de04 1118 (PL_Xpv->xpv_cur > 1 || \
6b88bc9c 1119 (PL_Xpv->xpv_cur && *PL_Xpv->xpv_pv != '0')) \
a80f87c4
GS
1120 ? 1 \
1121 : 0) \
1122 : \
1123 SvIOK(sv) \
1124 ? SvIVX(sv) != 0 \
1125 : SvNOK(sv) \
1126 ? SvNVX(sv) != 0.0 \
1127 : sv_2bool(sv) )
3db8f154 1128# define SvTRUEx(sv) ((PL_Sv = (sv)), SvTRUE(PL_Sv))
baca2b92
DM
1129#endif /* __GNU__ */
1130
765f542d
NC
1131#define SvIsCOW(sv) ((SvFLAGS(sv) & (SVf_FAKE | SVf_READONLY)) == \
1132 (SVf_FAKE | SVf_READONLY))
46187eeb 1133#define SvIsCOW_shared_hash(sv) (SvIsCOW(sv) && SvLEN(sv) == 0)
baca2b92
DM
1134
1135/* flag values for sv_*_flags functions */
1136#define SV_IMMEDIATE_UNREF 1
1137#define SV_GMAGIC 2
765f542d 1138#define SV_COW_DROP_PV 4
88632417 1139#define SV_UTF8_NO_ENCODING 8
5fcdf167 1140#define SV_NOSTEAL 16
765f542d 1141
46187eeb
NC
1142/* We are about to replace the SV's current value. So if it's copy on write
1143 we need to normalise it. Use the SV_COW_DROP_PV flag hint to say that
1144 the value is about to get thrown away, so drop the PV rather than go to
1145 the effort of making a read-write copy only for it to get immediately
1146 discarded. */
765f542d
NC
1147
1148#define SV_CHECK_THINKFIRST_COW_DROP(sv) if (SvTHINKFIRST(sv)) \
1149 sv_force_normal_flags(sv, SV_COW_DROP_PV)
46187eeb
NC
1150
1151#ifdef PERL_COPY_ON_WRITE
1152# define SvRELEASE_IVX(sv) ((void)((SvFLAGS(sv) & (SVf_OOK|SVf_READONLY|SVf_FAKE)) \
b885210e 1153 && Perl_sv_release_IVX(aTHX_ sv)))
46187eeb 1154# define SvIsCOW_normal(sv) (SvIsCOW(sv) && SvLEN(sv))
ed252734
NC
1155
1156#define CAN_COW_MASK (SVs_OBJECT|SVs_GMG|SVs_SMG|SVs_RMG|SVf_IOK|SVf_NOK| \
1157 SVf_POK|SVf_ROK|SVp_IOK|SVp_NOK|SVp_POK|SVf_FAKE| \
1158 SVf_OOK|SVf_BREAK|SVf_READONLY|SVf_AMAGIC)
1159#define CAN_COW_FLAGS (SVp_POK|SVf_POK)
1160
765f542d 1161#else
0c34ef67 1162# define SvRELEASE_IVX(sv) SvOOK_off(sv)
765f542d 1163#endif /* PERL_COPY_ON_WRITE */
46187eeb 1164
765f542d
NC
1165#define SV_CHECK_THINKFIRST(sv) if (SvTHINKFIRST(sv)) \
1166 sv_force_normal_flags(sv, 0)
1167
1168
baca2b92
DM
1169/* all these 'functions' are now just macros */
1170
1171#define sv_pv(sv) SvPV_nolen(sv)
1172#define sv_pvutf8(sv) SvPVutf8_nolen(sv)
1173#define sv_pvbyte(sv) SvPVbyte_nolen(sv)
1174
1175#define sv_pvn_force_nomg(sv, lp) sv_pvn_force_flags(sv, lp, 0)
1176#define sv_utf8_upgrade_nomg(sv) sv_utf8_upgrade_flags(sv, 0)
1177#define sv_catpvn_nomg(dsv, sstr, slen) sv_catpvn_flags(dsv, sstr, slen, 0)
1178#define sv_setsv(dsv, ssv) sv_setsv_flags(dsv, ssv, SV_GMAGIC)
1179#define sv_setsv_nomg(dsv, ssv) sv_setsv_flags(dsv, ssv, 0)
1180#define sv_catsv(dsv, ssv) sv_catsv_flags(dsv, ssv, SV_GMAGIC)
1181#define sv_catsv_nomg(dsv, ssv) sv_catsv_flags(dsv, ssv, 0)
1182#define sv_catpvn(dsv, sstr, slen) sv_catpvn_flags(dsv, sstr, slen, SV_GMAGIC)
1183#define sv_2pv(sv, lp) sv_2pv_flags(sv, lp, SV_GMAGIC)
1184#define sv_2pv_nomg(sv, lp) sv_2pv_flags(sv, lp, 0)
1185#define sv_pvn_force(sv, lp) sv_pvn_force_flags(sv, lp, SV_GMAGIC)
1186#define sv_utf8_upgrade(sv) sv_utf8_upgrade_flags(sv, SV_GMAGIC)
891f9566
YST
1187#define sv_2iv(sv) sv_2iv_flags(sv, SV_GMAGIC)
1188#define sv_2uv(sv) sv_2uv_flags(sv, SV_GMAGIC)
baca2b92 1189
db79b45b
JH
1190/* Should be named SvCatPVN_utf8_upgrade? */
1191#define sv_catpvn_utf8_upgrade(dsv, sstr, slen, nsv) \
1192 STMT_START { \
1193 if (!(nsv)) \
1194 nsv = sv_2mortal(newSVpvn(sstr, slen)); \
1195 else \
1196 sv_setpvn(nsv, sstr, slen); \
1197 SvUTF8_off(nsv); \
1198 sv_utf8_upgrade(nsv); \
1199 sv_catsv(dsv, nsv); \
1200 } STMT_END
79072805 1201
954c1994
GS
1202/*
1203=for apidoc Am|SV*|newRV_inc|SV* sv
1204
1205Creates an RV wrapper for an SV. The reference count for the original SV is
1206incremented.
1207
1208=cut
1209*/
1210
5f05dabc 1211#define newRV_inc(sv) newRV(sv)
5f05dabc 1212
ef50df4b 1213/* the following macros update any magic values this sv is associated with */
79072805 1214
954c1994 1215/*
ccfc67b7
JH
1216=head1 Magical Functions
1217
954c1994
GS
1218=for apidoc Am|void|SvGETMAGIC|SV* sv
1219Invokes C<mg_get> on an SV if it has 'get' magic. This macro evaluates its
1220argument more than once.
1221
1222=for apidoc Am|void|SvSETMAGIC|SV* sv
1223Invokes C<mg_set> on an SV if it has 'set' magic. This macro evaluates its
1224argument more than once.
1225
1226=for apidoc Am|void|SvSetSV|SV* dsb|SV* ssv
1227Calls C<sv_setsv> if dsv is not the same as ssv. May evaluate arguments
1228more than once.
1229
1230=for apidoc Am|void|SvSetSV_nosteal|SV* dsv|SV* ssv
1231Calls a non-destructive version of C<sv_setsv> if dsv is not the same as
1232ssv. May evaluate arguments more than once.
1233
645c22ef
DM
1234=for apidoc Am|void|SvSetMagicSV|SV* dsb|SV* ssv
1235Like C<SvSetSV>, but does any set magic required afterwards.
1236
1237=for apidoc Am|void|SvSetMagicSV_nosteal|SV* dsv|SV* ssv
80663158 1238Like C<SvSetSV_nosteal>, but does any set magic required afterwards.
645c22ef 1239
68795e93
NIS
1240=for apidoc Am|void|SvSHARE|SV* sv
1241Arranges for sv to be shared between threads if a suitable module
1242has been loaded.
1243
1244=for apidoc Am|void|SvLOCK|SV* sv
1245Arranges for a mutual exclusion lock to be obtained on sv if a suitable module
1246has been loaded.
1247
1248=for apidoc Am|void|SvUNLOCK|SV* sv
1249Releases a mutual exclusion lock on sv if a suitable module
1250has been loaded.
1251
ccfc67b7
JH
1252=head1 SV Manipulation Functions
1253
679ac26e 1254=for apidoc Am|char *|SvGROW|SV* sv|STRLEN len
954c1994
GS
1255Expands the character buffer in the SV so that it has room for the
1256indicated number of bytes (remember to reserve space for an extra trailing
8cf8f3d1 1257NUL character). Calls C<sv_grow> to perform the expansion if necessary.
954c1994
GS
1258Returns a pointer to the character buffer.
1259
1260=cut
1261*/
1262
68795e93
NIS
1263#define SvSHARE(sv) CALL_FPTR(PL_sharehook)(aTHX_ sv)
1264#define SvLOCK(sv) CALL_FPTR(PL_lockhook)(aTHX_ sv)
1265#define SvUNLOCK(sv) CALL_FPTR(PL_unlockhook)(aTHX_ sv)
1266
189b2af5
GS
1267#define SvGETMAGIC(x) STMT_START { if (SvGMAGICAL(x)) mg_get(x); } STMT_END
1268#define SvSETMAGIC(x) STMT_START { if (SvSMAGICAL(x)) mg_set(x); } STMT_END
79072805 1269
54310121 1270#define SvSetSV_and(dst,src,finally) \
189b2af5 1271 STMT_START { \
54310121
PP
1272 if ((dst) != (src)) { \
1273 sv_setsv(dst, src); \
1274 finally; \
189b2af5
GS
1275 } \
1276 } STMT_END
54310121 1277#define SvSetSV_nosteal_and(dst,src,finally) \
189b2af5 1278 STMT_START { \
8ebc5c01 1279 if ((dst) != (src)) { \
5fcdf167 1280 sv_setsv_flags(dst, src, SV_GMAGIC | SV_NOSTEAL); \
54310121 1281 finally; \
189b2af5
GS
1282 } \
1283 } STMT_END
79072805 1284
54310121 1285#define SvSetSV(dst,src) \
c9d716f7 1286 SvSetSV_and(dst,src,/*nothing*/;)
54310121 1287#define SvSetSV_nosteal(dst,src) \
c9d716f7 1288 SvSetSV_nosteal_and(dst,src,/*nothing*/;)
54310121
PP
1289
1290#define SvSetMagicSV(dst,src) \
1291 SvSetSV_and(dst,src,SvSETMAGIC(dst))
1292#define SvSetMagicSV_nosteal(dst,src) \
1293 SvSetSV_nosteal_and(dst,src,SvSETMAGIC(dst))
1294
db79b45b 1295
1045810a 1296#if !defined(SKIP_DEBUGGING)
79072805 1297#define SvPEEK(sv) sv_peek(sv)
3967c732
JD
1298#else
1299#define SvPEEK(sv) ""
1300#endif
79072805 1301
5dc8bdac 1302#define SvIMMORTAL(sv) ((sv)==&PL_sv_undef || (sv)==&PL_sv_yes || (sv)==&PL_sv_no || (sv)==&PL_sv_placeholder)
36477c24 1303
3280af22 1304#define boolSV(b) ((b) ? &PL_sv_yes : &PL_sv_no)
54310121 1305
79072805
LW
1306#define isGV(sv) (SvTYPE(sv) == SVt_PVGV)
1307
933fea7f
GS
1308#define SvGROW(sv,len) (SvLEN(sv) < (len) ? sv_grow(sv,len) : SvPVX(sv))
1309#define Sv_Grow sv_grow
3d35f11b 1310
a0739874
DM
1311#define CLONEf_COPY_STACKS 1
1312#define CLONEf_KEEP_PTR_TABLE 2
c43294b8 1313#define CLONEf_CLONE_HOST 4
0405e91e 1314#define CLONEf_JOIN_IN 8
a0739874 1315
8cf8f3d1 1316struct clone_params {
d2d73c3e
AB
1317 AV* stashes;
1318 UV flags;
59b40662 1319 PerlInterpreter *proto_perl;
8cf8f3d1 1320};