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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 */
7b2c381c 71 union {
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72 IV svu_iv;
73 UV svu_uv;
74 SV* svu_rv; /* pointer to another SV */
75 char* svu_pv; /* pointer to malloced string */
76 SV** svu_array;
7b2c381c 77 } sv_u;
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78#ifdef DEBUG_LEAKING_SCALARS
79 unsigned sv_debug_optype:9; /* the type of OP that allocated us */
80 unsigned sv_debug_inpad:1; /* was allocated in a pad for an OP */
81 unsigned sv_debug_cloned:1; /* was cloned for an ithread */
82 unsigned sv_debug_line:16; /* the line where we were allocated */
83 char * sv_debug_file; /* the file where we were allocated */
84#endif
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85};
86
87struct gv {
463ee0b2 88 XPVGV* sv_any; /* pointer to something */
79072805 89 U32 sv_refcnt; /* how many references to us */
8990e307 90 U32 sv_flags; /* what we are */
7b2c381c 91 union {
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92 IV svu_iv;
93 UV svu_uv;
94 SV* svu_rv;
95 char* svu_pv;
96 SV** svu_array;
7b2c381c 97 } sv_u;
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98};
99
100struct cv {
232e078e 101 XPVCV* sv_any; /* pointer to something */
79072805 102 U32 sv_refcnt; /* how many references to us */
8990e307 103 U32 sv_flags; /* what we are */
7b2c381c 104 union {
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105 IV svu_iv;
106 UV svu_uv;
107 SV* svu_rv;
108 char* svu_pv;
109 SV** svu_array;
7b2c381c 110 } sv_u;
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111};
112
113struct av {
463ee0b2 114 XPVAV* sv_any; /* pointer to something */
79072805 115 U32 sv_refcnt; /* how many references to us */
8990e307 116 U32 sv_flags; /* what we are */
7b2c381c 117 union {
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118 IV svu_iv;
119 UV svu_uv;
120 SV* svu_rv;
121 char* svu_pv; /* pointer to first array element */
122 SV** svu_array;
7b2c381c 123 } sv_u;
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124};
125
126struct hv {
463ee0b2 127 XPVHV* sv_any; /* pointer to something */
79072805 128 U32 sv_refcnt; /* how many references to us */
8990e307 129 U32 sv_flags; /* what we are */
7b2c381c 130 union {
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131 IV svu_iv;
132 UV svu_uv;
133 SV* svu_rv;
134 char* svu_pv;
135 SV** svu_array;
7b2c381c 136 } sv_u;
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137};
138
139struct io {
140 XPVIO* sv_any; /* pointer to something */
141 U32 sv_refcnt; /* how many references to us */
142 U32 sv_flags; /* what we are */
7b2c381c 143 union {
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144 IV svu_iv;
145 UV svu_uv;
146 SV* svu_rv;
147 char* svu_pv;
148 SV** svu_array;
7b2c381c 149 } sv_u;
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150};
151
954c1994 152/*
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153=head1 SV Manipulation Functions
154
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155=for apidoc Am|U32|SvREFCNT|SV* sv
156Returns the value of the object's reference count.
157
158=for apidoc Am|SV*|SvREFCNT_inc|SV* sv
159Increments the reference count of the given SV.
160
161=for apidoc Am|void|SvREFCNT_dec|SV* sv
162Decrements the reference count of the given SV.
163
164=for apidoc Am|svtype|SvTYPE|SV* sv
165Returns the type of the SV. See C<svtype>.
166
167=for apidoc Am|void|SvUPGRADE|SV* sv|svtype type
168Used to upgrade an SV to a more complex form. Uses C<sv_upgrade> to
169perform the upgrade if necessary. See C<svtype>.
170
171=cut
172*/
173
463ee0b2 174#define SvANY(sv) (sv)->sv_any
79072805 175#define SvFLAGS(sv) (sv)->sv_flags
aeea060c 176#define SvREFCNT(sv) (sv)->sv_refcnt
a863c7d1 177
93189314 178#if defined(__GNUC__) && !defined(__STRICT_ANSI__) && !defined(PERL_GCC_PEDANTIC)
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179# define SvREFCNT_inc(sv) \
180 ({ \
a3b680e6 181 SV * const _sv = (SV*)(sv); \
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182 if (_sv) \
183 (SvREFCNT(_sv))++; \
184 _sv; \
dce16143 185 })
8990e307 186#else
3db8f154 187# define SvREFCNT_inc(sv) \
4db098f4 188 ((PL_Sv=(SV*)(sv)), (PL_Sv && ++(SvREFCNT(PL_Sv))), (SV*)PL_Sv)
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189#endif
190
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191#if defined(__GNUC__) && !defined(__STRICT_ANSI__) && !defined(PERL_GCC_PEDANTIC)
192# define SvREFCNT_dec(sv) \
193 ({ \
a3b680e6 194 SV * const _sv = (SV*)(sv); \
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195 if (_sv) { \
196 if (SvREFCNT(_sv)) { \
197 if (--(SvREFCNT(_sv)) == 0) \
198 Perl_sv_free2(aTHX_ _sv); \
8c4d3c90 199 } else { \
3de3296f 200 sv_free(_sv); \
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201 } \
202 } \
203 })
204#else
91f3b821 205#define SvREFCNT_dec(sv) sv_free((SV*)(sv))
8c4d3c90 206#endif
a863c7d1 207
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208#define SVTYPEMASK 0xff
209#define SvTYPE(sv) ((sv)->sv_flags & SVTYPEMASK)
79072805 210
862a34c6 211#define SvUPGRADE(sv, mt) (void)(SvTYPE(sv) >= mt || sv_upgrade(sv, mt))
79072805 212
d9d18af6 213#define SVs_PADSTALE 0x00000100 /* lexical has gone out of scope */
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214#define SVs_PADTMP 0x00000200 /* in use as tmp */
215#define SVs_PADMY 0x00000400 /* in use a "my" variable */
216#define SVs_TEMP 0x00000800 /* string is stealable? */
217#define SVs_OBJECT 0x00001000 /* is "blessed" */
218#define SVs_GMG 0x00002000 /* has magical get method */
219#define SVs_SMG 0x00004000 /* has magical set method */
220#define SVs_RMG 0x00008000 /* has random magical methods */
221
222#define SVf_IOK 0x00010000 /* has valid public integer value */
223#define SVf_NOK 0x00020000 /* has valid public numeric value */
224#define SVf_POK 0x00040000 /* has valid public pointer value */
225#define SVf_ROK 0x00080000 /* has a valid reference pointer */
a0d0e21e 226
748a9306 227#define SVf_FAKE 0x00100000 /* glob or lexical is just a copy */
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228#define SVf_OOK 0x00200000 /* has valid offset value
229 For a PVHV this means that a
230 hv_aux struct is present after the
231 main array */
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232#define SVf_BREAK 0x00400000 /* refcnt is artificially low - used
233 * by SV's in final arena cleanup */
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234#define SVf_READONLY 0x00800000 /* may not be modified */
235
a0d0e21e 236
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237#define SVp_IOK 0x01000000 /* has valid non-public integer value */
238#define SVp_NOK 0x02000000 /* has valid non-public numeric value */
239#define SVp_POK 0x04000000 /* has valid non-public pointer value */
240#define SVp_SCREAM 0x08000000 /* has been studied? */
241
446eaa42 242#define SVf_UTF8 0x20000000 /* SvPV is UTF-8 encoded */
7a5fd60d 243/* Ensure this value does not clash with the GV_ADD* flags in gv.h */
5bc28da9 244
430eacda 245#define SVf_THINKFIRST (SVf_READONLY|SVf_ROK|SVf_FAKE)
5bc28da9 246
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247#define SVf_OK (SVf_IOK|SVf_NOK|SVf_POK|SVf_ROK| \
248 SVp_IOK|SVp_NOK|SVp_POK)
249
9e7bc3e8 250#define SVf_AMAGIC 0x10000000 /* has magical overloaded methods */
a0d0e21e 251
7b2a0f84 252#define PRIVSHIFT 8 /* (SVp_?OK >> PRIVSHIFT) == SVf_?OK */
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253
254/* Some private flags. */
255
f472eb5c 256/* SVpad_OUR may be set on SVt_PV{NV,MG,GV} types */
032d6771 257#define SVpad_OUR 0x80000000 /* pad name is "our" instead of "my" */
524189f1 258#define SVpad_TYPED 0x40000000 /* Typed Lexical */
032d6771 259
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260#define SVf_IVisUV 0x80000000 /* use XPVUV instead of XPVIV */
261
262#define SVpfm_COMPILED 0x80000000 /* FORMLINE is compiled */
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263
264#define SVpbm_VALID 0x80000000
bbce6d69 265#define SVpbm_TAIL 0x40000000
8990e307 266
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267#define SVrepl_EVAL 0x40000000 /* Replacement part of s///e */
268
9660f481 269#define SVphv_CLONEABLE 0x08000000 /* for stashes: clone its objects */
4b5190b5 270#define SVphv_REHASH 0x10000000 /* HV is recalculating hash values */
6bfc225d 271#define SVphv_SHAREKEYS 0x20000000 /* keys live on shared string table */
51594c39 272#define SVphv_LAZYDEL 0x40000000 /* entry in xhv_eiter must be deleted */
19692e8d 273#define SVphv_HASKFLAGS 0x80000000 /* keys have flag byte after hash */
bf6bd887 274
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275#define SVprv_WEAKREF 0x80000000 /* Weak reference */
276
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277#define SVpav_REAL 0x40000000 /* free old entries */
278#define SVpav_REIFY 0x80000000 /* can become real */
279
79072805 280struct xpv {
311a25d9 281 NV xnv_nv; /* numeric value, if any */
339049b0 282 STRLEN xpv_cur; /* length of svu_pv as a C string */
ed6116ce 283 STRLEN xpv_len; /* allocated size */
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284};
285
9f1501b2 286#if 0
59813432 287typedef struct xpv xpv_allocated;
9f1501b2
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288#else
289typedef struct {
339049b0 290 STRLEN xpv_cur; /* length of svu_pv as a C string */
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291 STRLEN xpv_len; /* allocated size */
292} xpv_allocated;
293#endif
59813432 294
79072805 295struct xpviv {
311a25d9 296 NV xnv_nv; /* numeric value, if any */
339049b0 297 STRLEN xpv_cur; /* length of svu_pv as a C string */
ed6116ce 298 STRLEN xpv_len; /* allocated size */
311a25d9
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299 union {
300 IV xivu_iv; /* integer value or pv offset */
301 UV xivu_uv;
302 void * xivu_p1;
303 } xiv_u;
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304};
305
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306#if 0
307typedef struct xpviv xpviv_allocated;
308#else
309typedef struct {
310 STRLEN xpv_cur; /* length of svu_pv as a C string */
311 STRLEN xpv_len; /* allocated size */
312 union {
313 IV xivu_iv; /* integer value or pv offset */
314 UV xivu_uv;
315 void * xivu_p1;
316 } xiv_u;
317} xpviv_allocated;
318#endif
319
320#define xiv_iv xiv_u.xivu_iv
321
ff68c719 322struct xpvuv {
311a25d9 323 NV xnv_nv; /* numeric value, if any */
339049b0 324 STRLEN xpv_cur; /* length of svu_pv as a C string */
ff68c719 325 STRLEN xpv_len; /* allocated size */
311a25d9
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326 union {
327 IV xuvu_iv;
328 UV xuvu_uv; /* unsigned value or pv offset */
329 void * xuvu_p1;
330 } xuv_u;
ff68c719
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331};
332
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333#define xuv_uv xuv_u.xuvu_uv
334
79072805 335struct xpvnv {
311a25d9 336 NV xnv_nv; /* numeric value, if any */
339049b0 337 STRLEN xpv_cur; /* length of svu_pv as a C string */
ed6116ce 338 STRLEN xpv_len; /* allocated size */
e4305a63 339 union {
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340 IV xivu_iv; /* integer value or pv offset */
341 UV xivu_uv;
342 void * xivu_p1;
343 } xiv_u;
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344};
345
6ee623d5 346/* These structure must match the beginning of struct xpvhv in hv.h. */
79072805 347struct xpvmg {
311a25d9 348 NV xnv_nv; /* numeric value, if any */
339049b0 349 STRLEN xpv_cur; /* length of svu_pv as a C string */
ed6116ce 350 STRLEN xpv_len; /* allocated size */
e4305a63 351 union {
311a25d9
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352 IV xivu_iv; /* integer value or pv offset */
353 UV xivu_uv;
354 void * xivu_p1;
355 } xiv_u;
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356 MAGIC* xmg_magic; /* linked list of magicalness */
357 HV* xmg_stash; /* class package */
358};
359
360struct xpvlv {
311a25d9 361 NV xnv_nv; /* numeric value, if any */
339049b0 362 STRLEN xpv_cur; /* length of svu_pv as a C string */
ed6116ce 363 STRLEN xpv_len; /* allocated size */
e4305a63 364 union {
311a25d9
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365 IV xivu_iv; /* integer value or pv offset */
366 UV xivu_uv;
367 void * xivu_p1;
368 } xiv_u;
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369 MAGIC* xmg_magic; /* linked list of magicalness */
370 HV* xmg_stash; /* class package */
8990e307 371
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TP
372 /* a full glob fits into this */
373 GP* xgv_gp;
374 char* xgv_name;
375 STRLEN xgv_namelen;
376 HV* xgv_stash;
377 U8 xgv_flags;
378
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379 STRLEN xlv_targoff;
380 STRLEN xlv_targlen;
381 SV* xlv_targ;
dd28f7bb
DM
382 char xlv_type; /* k=keys .=pos x=substr v=vec /=join/re
383 * y=alem/helem/iter t=tie T=tied HE */
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384};
385
386struct xpvgv {
311a25d9 387 NV xnv_nv; /* numeric value, if any */
339049b0 388 STRLEN xpv_cur; /* length of svu_pv as a C string */
ed6116ce 389 STRLEN xpv_len; /* allocated size */
e4305a63 390 union {
311a25d9
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391 IV xivu_iv; /* integer value or pv offset */
392 UV xivu_uv;
393 void * xivu_p1;
394 } xiv_u;
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395 MAGIC* xmg_magic; /* linked list of magicalness */
396 HV* xmg_stash; /* class package */
8990e307 397
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398 GP* xgv_gp;
399 char* xgv_name;
400 STRLEN xgv_namelen;
401 HV* xgv_stash;
a5f75d66 402 U8 xgv_flags;
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403};
404
405struct xpvbm {
311a25d9 406 NV xnv_nv; /* numeric value, if any */
339049b0 407 STRLEN xpv_cur; /* length of svu_pv as a C string */
ed6116ce 408 STRLEN xpv_len; /* allocated size */
e4305a63 409 union {
311a25d9
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410 IV xivu_iv; /* integer value or pv offset */
411 UV xivu_uv;
412 void * xivu_p1;
413 } xiv_u;
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414 MAGIC* xmg_magic; /* linked list of magicalness */
415 HV* xmg_stash; /* class package */
8990e307 416
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417 I32 xbm_useful; /* is this constant pattern being useful? */
418 U16 xbm_previous; /* how many characters in string before rare? */
419 U8 xbm_rare; /* rarest character in string */
420};
421
fd40b977 422/* This structure must match XPVCV in cv.h */
44a8e56a 423
77a005ab
MB
424typedef U16 cv_flags_t;
425
79072805 426struct xpvfm {
311a25d9 427 NV xnv_nv; /* numeric value, if any */
339049b0 428 STRLEN xpv_cur; /* length of svu_pv as a C string */
ed6116ce 429 STRLEN xpv_len; /* allocated size */
e4305a63 430 union {
311a25d9
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431 IV xivu_iv; /* integer value or pv offset */
432 UV xivu_uv;
433 void * xivu_p1;
434 } xiv_u;
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435 MAGIC* xmg_magic; /* linked list of magicalness */
436 HV* xmg_stash; /* class package */
8990e307 437
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438 HV * xcv_stash;
439 OP * xcv_start;
440 OP * xcv_root;
acfe0abc 441 void (*xcv_xsub)(pTHX_ CV*);
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442 ANY xcv_xsubany;
443 GV * xcv_gv;
57843af0 444 char * xcv_file;
b195d487 445 long xcv_depth; /* >= 2 indicates recursive call */
79072805 446 AV * xcv_padlist;
748a9306 447 CV * xcv_outside;
77a005ab 448 cv_flags_t xcv_flags;
a3985cdc
DM
449 U32 xcv_outside_seq; /* the COP sequence (at the point of our
450 * compilation) in the lexically enclosing
451 * sub */
11a7ac70 452 IV xfm_lines;
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453};
454
8990e307 455struct xpvio {
311a25d9 456 NV xnv_nv; /* numeric value, if any */
339049b0 457 STRLEN xpv_cur; /* length of svu_pv as a C string */
8990e307 458 STRLEN xpv_len; /* allocated size */
e4305a63 459 union {
311a25d9
NC
460 IV xivu_iv; /* integer value or pv offset */
461 UV xivu_uv;
462 void * xivu_p1;
463 } xiv_u;
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464 MAGIC* xmg_magic; /* linked list of magicalness */
465 HV* xmg_stash; /* class package */
466
760ac839
LW
467 PerlIO * xio_ifp; /* ifp and ofp are normally the same */
468 PerlIO * xio_ofp; /* but sockets need separate streams */
4755096e
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469 /* Cray addresses everything by word boundaries (64 bits) and
470 * code and data pointers cannot be mixed (which is exactly what
471 * Perl_filter_add() tries to do with the dirp), hence the following
472 * union trick (as suggested by Gurusamy Sarathy).
473 * For further information see Geir Johansen's problem report titled
474 [ID 20000612.002] Perl problem on Cray system
475 * The any pointer (known as IoANY()) will also be a good place
476 * to hang any IO disciplines to.
477 */
478 union {
479 DIR * xiou_dirp; /* for opendir, readdir, etc */
480 void * xiou_any; /* for alignment */
481 } xio_dirpu;
11a7ac70
JH
482 IV xio_lines; /* $. */
483 IV xio_page; /* $% */
484 IV xio_page_len; /* $= */
485 IV xio_lines_left; /* $- */
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486 char * xio_top_name; /* $^ */
487 GV * xio_top_gv; /* $^ */
488 char * xio_fmt_name; /* $~ */
489 GV * xio_fmt_gv; /* $~ */
490 char * xio_bottom_name;/* $^B */
491 GV * xio_bottom_gv; /* $^B */
492 short xio_subprocess; /* -| or |- */
493 char xio_type;
494 char xio_flags;
495};
4755096e
GS
496#define xio_dirp xio_dirpu.xiou_dirp
497#define xio_any xio_dirpu.xiou_any
8990e307 498
e0c19803
GS
499#define IOf_ARGV 1 /* this fp iterates over ARGV */
500#define IOf_START 2 /* check for null ARGV and substitute '-' */
501#define IOf_FLUSH 4 /* this fp wants a flush after write op */
502#define IOf_DIDTOP 8 /* just did top of form */
503#define IOf_UNTAINT 16 /* consider this fp (and its data) "safe" */
504#define IOf_NOLINE 32 /* slurped a pseudo-line from empty file */
505#define IOf_FAKE_DIRP 64 /* xio_dirp is fake (source filters kludge) */
8990e307 506
ed6116ce
LW
507/* The following macros define implementation-independent predicates on SVs. */
508
954c1994
GS
509/*
510=for apidoc Am|bool|SvNIOK|SV* sv
511Returns a boolean indicating whether the SV contains a number, integer or
512double.
513
514=for apidoc Am|bool|SvNIOKp|SV* sv
515Returns a boolean indicating whether the SV contains a number, integer or
516double. Checks the B<private> setting. Use C<SvNIOK>.
517
518=for apidoc Am|void|SvNIOK_off|SV* sv
519Unsets the NV/IV status of an SV.
520
521=for apidoc Am|bool|SvOK|SV* sv
9adebda4
SB
522Returns a boolean indicating whether the value is an SV. It also tells
523whether the value is defined or not.
954c1994
GS
524
525=for apidoc Am|bool|SvIOKp|SV* sv
526Returns a boolean indicating whether the SV contains an integer. Checks
527the B<private> setting. Use C<SvIOK>.
528
529=for apidoc Am|bool|SvNOKp|SV* sv
530Returns a boolean indicating whether the SV contains a double. Checks the
531B<private> setting. Use C<SvNOK>.
532
533=for apidoc Am|bool|SvPOKp|SV* sv
534Returns a boolean indicating whether the SV contains a character string.
535Checks the B<private> setting. Use C<SvPOK>.
536
537=for apidoc Am|bool|SvIOK|SV* sv
538Returns a boolean indicating whether the SV contains an integer.
539
540=for apidoc Am|void|SvIOK_on|SV* sv
541Tells an SV that it is an integer.
542
543=for apidoc Am|void|SvIOK_off|SV* sv
544Unsets the IV status of an SV.
545
546=for apidoc Am|void|SvIOK_only|SV* sv
547Tells an SV that it is an integer and disables all other OK bits.
548
e331fc52
JH
549=for apidoc Am|void|SvIOK_only_UV|SV* sv
550Tells and SV that it is an unsigned integer and disables all other OK bits.
551
12fa07df 552=for apidoc Am|bool|SvIOK_UV|SV* sv
e331fc52
JH
553Returns a boolean indicating whether the SV contains an unsigned integer.
554
28e5dec8
JH
555=for apidoc Am|void|SvUOK|SV* sv
556Returns a boolean indicating whether the SV contains an unsigned integer.
557
12fa07df 558=for apidoc Am|bool|SvIOK_notUV|SV* sv
d1be9408 559Returns a boolean indicating whether the SV contains a signed integer.
e331fc52 560
954c1994
GS
561=for apidoc Am|bool|SvNOK|SV* sv
562Returns a boolean indicating whether the SV contains a double.
563
564=for apidoc Am|void|SvNOK_on|SV* sv
565Tells an SV that it is a double.
566
567=for apidoc Am|void|SvNOK_off|SV* sv
568Unsets the NV status of an SV.
569
570=for apidoc Am|void|SvNOK_only|SV* sv
571Tells an SV that it is a double and disables all other OK bits.
572
573=for apidoc Am|bool|SvPOK|SV* sv
574Returns a boolean indicating whether the SV contains a character
575string.
576
577=for apidoc Am|void|SvPOK_on|SV* sv
578Tells an SV that it is a string.
579
580=for apidoc Am|void|SvPOK_off|SV* sv
581Unsets the PV status of an SV.
582
583=for apidoc Am|void|SvPOK_only|SV* sv
584Tells an SV that it is a string and disables all other OK bits.
1e54db1a 585Will also turn off the UTF-8 status.
954c1994 586
b0f01acb
JP
587=for apidoc Am|bool|SvVOK|SV* sv
588Returns a boolean indicating whether the SV contains a v-string.
589
954c1994
GS
590=for apidoc Am|bool|SvOOK|SV* sv
591Returns a boolean indicating whether the SvIVX is a valid offset value for
592the SvPVX. This hack is used internally to speed up removal of characters
593from the beginning of a SvPV. When SvOOK is true, then the start of the
594allocated string buffer is really (SvPVX - SvIVX).
595
596=for apidoc Am|bool|SvROK|SV* sv
597Tests if the SV is an RV.
598
599=for apidoc Am|void|SvROK_on|SV* sv
600Tells an SV that it is an RV.
601
602=for apidoc Am|void|SvROK_off|SV* sv
603Unsets the RV status of an SV.
604
605=for apidoc Am|SV*|SvRV|SV* sv
606Dereferences an RV to return the SV.
607
608=for apidoc Am|IV|SvIVX|SV* sv
645c22ef
DM
609Returns the raw value in the SV's IV slot, without checks or conversions.
610Only use when you are sure SvIOK is true. See also C<SvIV()>.
954c1994
GS
611
612=for apidoc Am|UV|SvUVX|SV* sv
645c22ef
DM
613Returns the raw value in the SV's UV slot, without checks or conversions.
614Only use when you are sure SvIOK is true. See also C<SvUV()>.
954c1994
GS
615
616=for apidoc Am|NV|SvNVX|SV* sv
645c22ef
DM
617Returns the raw value in the SV's NV slot, without checks or conversions.
618Only use when you are sure SvNOK is true. See also C<SvNV()>.
954c1994
GS
619
620=for apidoc Am|char*|SvPVX|SV* sv
645c22ef 621Returns a pointer to the physical string in the SV. The SV must contain a
954c1994
GS
622string.
623
624=for apidoc Am|STRLEN|SvCUR|SV* sv
625Returns the length of the string which is in the SV. See C<SvLEN>.
626
627=for apidoc Am|STRLEN|SvLEN|SV* sv
659239a4
MG
628Returns the size of the string buffer in the SV, not including any part
629attributable to C<SvOOK>. See C<SvCUR>.
954c1994
GS
630
631=for apidoc Am|char*|SvEND|SV* sv
632Returns a pointer to the last character in the string which is in the SV.
633See C<SvCUR>. Access the character as *(SvEND(sv)).
634
635=for apidoc Am|HV*|SvSTASH|SV* sv
636Returns the stash of the SV.
637
672994ce 638=for apidoc Am|void|SvIV_set|SV* sv|IV val
20799e15
SP
639Set the value of the IV pointer in sv to val. It is possible to perform
640the same function of this macro with an lvalue assignment to C<SvIVX>.
641With future Perls, however, it will be more efficient to use
642C<SvIV_set> instead of the lvalue assignment to C<SvIVX>.
672994ce
SP
643
644=for apidoc Am|void|SvNV_set|SV* sv|NV val
20799e15 645Set the value of the NV pointer in sv to val. See C<SvIV_set>.
672994ce
SP
646
647=for apidoc Am|void|SvPV_set|SV* sv|char* val
20799e15 648Set the value of the PV pointer in sv to val. See C<SvIV_set>.
672994ce
SP
649
650=for apidoc Am|void|SvUV_set|SV* sv|UV val
20799e15 651Set the value of the UV pointer in sv to val. See C<SvIV_set>.
672994ce
SP
652
653=for apidoc Am|void|SvRV_set|SV* sv|SV* val
20799e15 654Set the value of the RV pointer in sv to val. See C<SvIV_set>.
672994ce
SP
655
656=for apidoc Am|void|SvMAGIC_set|SV* sv|MAGIC* val
20799e15 657Set the value of the MAGIC pointer in sv to val. See C<SvIV_set>.
672994ce
SP
658
659=for apidoc Am|void|SvSTASH_set|SV* sv|STASH* val
20799e15 660Set the value of the STASH pointer in sv to val. See C<SvIV_set>.
672994ce 661
954c1994 662=for apidoc Am|void|SvCUR_set|SV* sv|STRLEN len
20799e15
SP
663Set the current length of the string which is in the SV. See C<SvCUR>
664and C<SvIV_set>.
672994ce
SP
665
666=for apidoc Am|void|SvLEN_set|SV* sv|STRLEN len
20799e15 667Set the actual length of the string which is in the SV. See C<SvIV_set>.
954c1994
GS
668
669=cut
670*/
671
79072805 672#define SvNIOK(sv) (SvFLAGS(sv) & (SVf_IOK|SVf_NOK))
748a9306 673#define SvNIOKp(sv) (SvFLAGS(sv) & (SVp_IOK|SVp_NOK))
a0d0e21e 674#define SvNIOK_off(sv) (SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK| \
25da4f38 675 SVp_IOK|SVp_NOK|SVf_IVisUV))
79072805 676
5dc8bdac 677#if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
29e97371 678#define assert_not_ROK(sv) ({assert(!SvROK(sv) || !SvRV(sv));}),
906ed6d6 679#else
54866b45 680#define assert_not_ROK(sv)
906ed6d6
NC
681#endif
682
463ee0b2 683#define SvOK(sv) (SvFLAGS(sv) & SVf_OK)
54866b45 684#define SvOK_off(sv) (assert_not_ROK(sv) \
906ed6d6 685 SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \
d41ff1b8 686 SVf_IVisUV|SVf_UTF8), \
25da4f38 687 SvOOK_off(sv))
54866b45 688#define SvOK_off_exc_UV(sv) (assert_not_ROK(sv) \
906ed6d6 689 SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \
d41ff1b8 690 SVf_UTF8), \
a0d0e21e 691 SvOOK_off(sv))
79072805 692
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693#define SvOKp(sv) (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK))
694#define SvIOKp(sv) (SvFLAGS(sv) & SVp_IOK)
46187eeb 695#define SvIOKp_on(sv) (SvRELEASE_IVX(sv), \
765f542d 696 SvFLAGS(sv) |= SVp_IOK)
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697#define SvNOKp(sv) (SvFLAGS(sv) & SVp_NOK)
698#define SvNOKp_on(sv) (SvFLAGS(sv) |= SVp_NOK)
699#define SvPOKp(sv) (SvFLAGS(sv) & SVp_POK)
54866b45 700#define SvPOKp_on(sv) (assert_not_ROK(sv) \
906ed6d6 701 SvFLAGS(sv) |= SVp_POK)
463ee0b2 702
79072805 703#define SvIOK(sv) (SvFLAGS(sv) & SVf_IOK)
46187eeb 704#define SvIOK_on(sv) (SvRELEASE_IVX(sv), \
765f542d 705 SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
25da4f38 706#define SvIOK_off(sv) (SvFLAGS(sv) &= ~(SVf_IOK|SVp_IOK|SVf_IVisUV))
0c34ef67 707#define SvIOK_only(sv) (SvOK_off(sv), \
a0d0e21e 708 SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
0c34ef67 709#define SvIOK_only_UV(sv) (SvOK_off_exc_UV(sv), \
25da4f38 710 SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
70401c6b 711
25da4f38
IZ
712#define SvIOK_UV(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV)) \
713 == (SVf_IOK|SVf_IVisUV))
28e5dec8 714#define SvUOK(sv) SvIOK_UV(sv)
25da4f38
IZ
715#define SvIOK_notUV(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV)) \
716 == SVf_IOK)
717
718#define SvIsUV(sv) (SvFLAGS(sv) & SVf_IVisUV)
719#define SvIsUV_on(sv) (SvFLAGS(sv) |= SVf_IVisUV)
720#define SvIsUV_off(sv) (SvFLAGS(sv) &= ~SVf_IVisUV)
79072805
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721
722#define SvNOK(sv) (SvFLAGS(sv) & SVf_NOK)
a0d0e21e 723#define SvNOK_on(sv) (SvFLAGS(sv) |= (SVf_NOK|SVp_NOK))
8990e307 724#define SvNOK_off(sv) (SvFLAGS(sv) &= ~(SVf_NOK|SVp_NOK))
0c34ef67 725#define SvNOK_only(sv) (SvOK_off(sv), \
a0d0e21e 726 SvFLAGS(sv) |= (SVf_NOK|SVp_NOK))
79072805 727
914184e1 728/*
12fa07df 729=for apidoc Am|bool|SvUTF8|SV* sv
914184e1
JH
730Returns a boolean indicating whether the SV contains UTF-8 encoded data.
731
732=for apidoc Am|void|SvUTF8_on|SV *sv
1e54db1a 733Turn on the UTF-8 status of an SV (the data is not changed, just the flag).
d5ce4a7c 734Do not use frivolously.
914184e1
JH
735
736=for apidoc Am|void|SvUTF8_off|SV *sv
1e54db1a 737Unsets the UTF-8 status of an SV.
914184e1
JH
738
739=for apidoc Am|void|SvPOK_only_UTF8|SV* sv
d5ce4a7c 740Tells an SV that it is a string and disables all other OK bits,
1e54db1a 741and leaves the UTF-8 status as it was.
f1a1024e 742
914184e1
JH
743=cut
744 */
745
7a5fd60d
NC
746/* Ensure the return value of this macro does not clash with the GV_ADD* flags
747in gv.h: */
a7cb1f99
GS
748#define SvUTF8(sv) (SvFLAGS(sv) & SVf_UTF8)
749#define SvUTF8_on(sv) (SvFLAGS(sv) |= (SVf_UTF8))
750#define SvUTF8_off(sv) (SvFLAGS(sv) &= ~(SVf_UTF8))
5bc28da9 751
79072805 752#define SvPOK(sv) (SvFLAGS(sv) & SVf_POK)
54866b45 753#define SvPOK_on(sv) (assert_not_ROK(sv) \
906ed6d6 754 SvFLAGS(sv) |= (SVf_POK|SVp_POK))
8990e307 755#define SvPOK_off(sv) (SvFLAGS(sv) &= ~(SVf_POK|SVp_POK))
54866b45 756#define SvPOK_only(sv) (assert_not_ROK(sv) \
906ed6d6 757 SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \
d41ff1b8
GS
758 SVf_IVisUV|SVf_UTF8), \
759 SvFLAGS(sv) |= (SVf_POK|SVp_POK))
54866b45 760#define SvPOK_only_UTF8(sv) (assert_not_ROK(sv) \
906ed6d6 761 SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \
d41ff1b8 762 SVf_IVisUV), \
a0d0e21e 763 SvFLAGS(sv) |= (SVf_POK|SVp_POK))
79072805 764
b0f01acb 765#define SvVOK(sv) (SvMAGICAL(sv) && mg_find(sv,'V'))
79072805 766#define SvOOK(sv) (SvFLAGS(sv) & SVf_OOK)
155aba94 767#define SvOOK_on(sv) ((void)SvIOK_off(sv), SvFLAGS(sv) |= SVf_OOK)
0c34ef67 768#define SvOOK_off(sv) ((void)(SvOOK(sv) && sv_backoff(sv)))
79072805 769
a0d0e21e
LW
770#define SvFAKE(sv) (SvFLAGS(sv) & SVf_FAKE)
771#define SvFAKE_on(sv) (SvFLAGS(sv) |= SVf_FAKE)
772#define SvFAKE_off(sv) (SvFLAGS(sv) &= ~SVf_FAKE)
773
ed6116ce 774#define SvROK(sv) (SvFLAGS(sv) & SVf_ROK)
a0d0e21e 775#define SvROK_on(sv) (SvFLAGS(sv) |= SVf_ROK)
a0d0e21e 776#define SvROK_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK|SVf_AMAGIC))
79072805 777
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778#define SvMAGICAL(sv) (SvFLAGS(sv) & (SVs_GMG|SVs_SMG|SVs_RMG))
779#define SvMAGICAL_on(sv) (SvFLAGS(sv) |= (SVs_GMG|SVs_SMG|SVs_RMG))
780#define SvMAGICAL_off(sv) (SvFLAGS(sv) &= ~(SVs_GMG|SVs_SMG|SVs_RMG))
79072805 781
8990e307
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782#define SvGMAGICAL(sv) (SvFLAGS(sv) & SVs_GMG)
783#define SvGMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_GMG)
784#define SvGMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_GMG)
ed6116ce 785
8990e307
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786#define SvSMAGICAL(sv) (SvFLAGS(sv) & SVs_SMG)
787#define SvSMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_SMG)
788#define SvSMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_SMG)
ed6116ce 789
8990e307
LW
790#define SvRMAGICAL(sv) (SvFLAGS(sv) & SVs_RMG)
791#define SvRMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_RMG)
792#define SvRMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_RMG)
ed6116ce 793
9e7bc3e8
JD
794#define SvAMAGIC(sv) (SvFLAGS(sv) & SVf_AMAGIC)
795#define SvAMAGIC_on(sv) (SvFLAGS(sv) |= SVf_AMAGIC)
796#define SvAMAGIC_off(sv) (SvFLAGS(sv) &= ~SVf_AMAGIC)
a0d0e21e 797
8cf8f3d1 798#define SvGAMAGIC(sv) (SvFLAGS(sv) & (SVs_GMG|SVf_AMAGIC))
1426bbf4 799
a0d0e21e
LW
800/*
801#define Gv_AMG(stash) \
802 (HV_AMAGICmb(stash) && \
803 ((!HV_AMAGICbad(stash) && HV_AMAGIC(stash)) || Gv_AMupdate(stash)))
804*/
3280af22 805#define Gv_AMG(stash) (PL_amagic_generation && Gv_AMupdate(stash))
a0d0e21e 806
810b8aa5
GS
807#define SvWEAKREF(sv) ((SvFLAGS(sv) & (SVf_ROK|SVprv_WEAKREF)) \
808 == (SVf_ROK|SVprv_WEAKREF))
809#define SvWEAKREF_on(sv) (SvFLAGS(sv) |= (SVf_ROK|SVprv_WEAKREF))
810#define SvWEAKREF_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK|SVprv_WEAKREF))
811
a0d0e21e 812#define SvTHINKFIRST(sv) (SvFLAGS(sv) & SVf_THINKFIRST)
ed6116ce 813
d9d18af6
DM
814#define SvPADSTALE(sv) (SvFLAGS(sv) & SVs_PADSTALE)
815#define SvPADSTALE_on(sv) (SvFLAGS(sv) |= SVs_PADSTALE)
816#define SvPADSTALE_off(sv) (SvFLAGS(sv) &= ~SVs_PADSTALE)
817
8990e307 818#define SvPADTMP(sv) (SvFLAGS(sv) & SVs_PADTMP)
235cc2e3 819#define SvPADTMP_on(sv) (SvFLAGS(sv) |= SVs_PADTMP)
8990e307 820#define SvPADTMP_off(sv) (SvFLAGS(sv) &= ~SVs_PADTMP)
ed6116ce 821
8990e307 822#define SvPADMY(sv) (SvFLAGS(sv) & SVs_PADMY)
235cc2e3 823#define SvPADMY_on(sv) (SvFLAGS(sv) |= SVs_PADMY)
ed6116ce 824
8990e307
LW
825#define SvTEMP(sv) (SvFLAGS(sv) & SVs_TEMP)
826#define SvTEMP_on(sv) (SvFLAGS(sv) |= SVs_TEMP)
827#define SvTEMP_off(sv) (SvFLAGS(sv) &= ~SVs_TEMP)
79072805 828
8990e307
LW
829#define SvOBJECT(sv) (SvFLAGS(sv) & SVs_OBJECT)
830#define SvOBJECT_on(sv) (SvFLAGS(sv) |= SVs_OBJECT)
831#define SvOBJECT_off(sv) (SvFLAGS(sv) &= ~SVs_OBJECT)
79072805 832
8990e307
LW
833#define SvREADONLY(sv) (SvFLAGS(sv) & SVf_READONLY)
834#define SvREADONLY_on(sv) (SvFLAGS(sv) |= SVf_READONLY)
835#define SvREADONLY_off(sv) (SvFLAGS(sv) &= ~SVf_READONLY)
79072805 836
8990e307
LW
837#define SvSCREAM(sv) (SvFLAGS(sv) & SVp_SCREAM)
838#define SvSCREAM_on(sv) (SvFLAGS(sv) |= SVp_SCREAM)
839#define SvSCREAM_off(sv) (SvFLAGS(sv) &= ~SVp_SCREAM)
79072805 840
8990e307
LW
841#define SvCOMPILED(sv) (SvFLAGS(sv) & SVpfm_COMPILED)
842#define SvCOMPILED_on(sv) (SvFLAGS(sv) |= SVpfm_COMPILED)
843#define SvCOMPILED_off(sv) (SvFLAGS(sv) &= ~SVpfm_COMPILED)
79072805 844
25da4f38
IZ
845#define SvEVALED(sv) (SvFLAGS(sv) & SVrepl_EVAL)
846#define SvEVALED_on(sv) (SvFLAGS(sv) |= SVrepl_EVAL)
847#define SvEVALED_off(sv) (SvFLAGS(sv) &= ~SVrepl_EVAL)
848
8990e307
LW
849#define SvTAIL(sv) (SvFLAGS(sv) & SVpbm_TAIL)
850#define SvTAIL_on(sv) (SvFLAGS(sv) |= SVpbm_TAIL)
851#define SvTAIL_off(sv) (SvFLAGS(sv) &= ~SVpbm_TAIL)
852
8990e307
LW
853#define SvVALID(sv) (SvFLAGS(sv) & SVpbm_VALID)
854#define SvVALID_on(sv) (SvFLAGS(sv) |= SVpbm_VALID)
855#define SvVALID_off(sv) (SvFLAGS(sv) &= ~SVpbm_VALID)
856
1cc8b4c5
AB
857#ifdef USE_ITHREADS
858/* The following uses the FAKE flag to show that a regex pointer is infact
8ca6097c 859 its own offset in the regexpad for ithreads */
1cc8b4c5
AB
860#define SvREPADTMP(sv) (SvFLAGS(sv) & SVf_FAKE)
861#define SvREPADTMP_on(sv) (SvFLAGS(sv) |= SVf_FAKE)
862#define SvREPADTMP_off(sv) (SvFLAGS(sv) &= ~SVf_FAKE)
863#endif
864
b162af07 865#ifdef PERL_DEBUG_COW
339049b0 866#define SvRV(sv) (0 + (sv)->sv_u.svu_rv)
b162af07 867#else
339049b0 868#define SvRV(sv) ((sv)->sv_u.svu_rv)
b162af07 869#endif
ed6116ce
LW
870#define SvRVx(sv) SvRV(sv)
871
f599b64b 872#ifdef PERL_DEBUG_COW
62703e72
NC
873#define SvIVX(sv) (0 + ((XPVIV*) SvANY(sv))->xiv_iv)
874#define SvUVX(sv) (0 + ((XPVUV*) SvANY(sv))->xuv_uv)
875#define SvNVX(sv) (0 + ((XPVNV*) SvANY(sv))->xnv_nv)
339049b0 876#define SvPVX(sv) (0 + (sv)->sv_u.svu_pv)
62703e72
NC
877#define SvCUR(sv) (0 + ((XPV*) SvANY(sv))->xpv_cur)
878#define SvLEN(sv) (0 + ((XPV*) SvANY(sv))->xpv_len)
339049b0 879#define SvEND(sv) ((sv)->sv_u.svu_pv + ((XPV*)SvANY(sv))->xpv_cur)
62703e72 880
03687789
SP
881#ifdef DEBUGGING
882# ifdef PERL_IN_SV_C
62703e72 883/* Can't make this RVALUE because of Perl_sv_unmagic. */
03687789
SP
884# define SvMAGIC(sv) (*(assert(SvTYPE(sv) >= SVt_PVMG), &((XPVMG*) SvANY(sv))->xmg_magic))
885# else
886# define SvMAGIC(sv) (0 + *(assert(SvTYPE(sv) >= SVt_PVMG), &((XPVMG*) SvANY(sv))->xmg_magic))
887# endif
888#define SvSTASH(sv) (0 + *(assert(SvTYPE(sv) >= SVt_PVMG), &((XPVMG*) SvANY(sv))->xmg_stash))
f599b64b 889#else
03687789
SP
890# ifdef PERL_IN_SV_C
891# define SvMAGIC(sv) ((XPVMG*) SvANY(sv))->xmg_magic
892# else
893# define SvMAGIC(sv) (0 + ((XPVMG*) SvANY(sv))->xmg_magic)
894# endif
895#define SvSTASH(sv) (0 + ((XPVMG*) SvANY(sv))->xmg_stash)
b162af07 896#endif
62703e72
NC
897#else
898#define SvIVX(sv) ((XPVIV*) SvANY(sv))->xiv_iv
899#define SvUVX(sv) ((XPVUV*) SvANY(sv))->xuv_uv
900#define SvNVX(sv) ((XPVNV*) SvANY(sv))->xnv_nv
339049b0 901#define SvPVX(sv) ((sv)->sv_u.svu_pv)
62703e72
NC
902#define SvCUR(sv) ((XPV*) SvANY(sv))->xpv_cur
903#define SvLEN(sv) ((XPV*) SvANY(sv))->xpv_len
339049b0 904#define SvEND(sv) ((sv)->sv_u.svu_pv + ((XPV*)SvANY(sv))->xpv_cur)
ffb05e06
NC
905
906#ifdef DEBUGGING
2b057284
NC
907#define SvMAGIC(sv) (*(assert(SvTYPE(sv) >= SVt_PVMG), &((XPVMG*) SvANY(sv))->xmg_magic))
908#define SvSTASH(sv) (*(assert(SvTYPE(sv) >= SVt_PVMG), &((XPVMG*) SvANY(sv))->xmg_stash))
ffb05e06 909#else
79072805
LW
910#define SvMAGIC(sv) ((XPVMG*) SvANY(sv))->xmg_magic
911#define SvSTASH(sv) ((XPVMG*) SvANY(sv))->xmg_stash
ffb05e06 912#endif
79072805 913
62703e72
NC
914#endif
915
916#define SvIVXx(sv) SvIVX(sv)
917#define SvUVXx(sv) SvUVX(sv)
918#define SvNVXx(sv) SvNVX(sv)
919#define SvPVXx(sv) SvPVX(sv)
920#define SvLENx(sv) SvLEN(sv)
921#define SvENDx(sv) ((PL_Sv = (sv)), SvEND(PL_Sv))
922
923
28e5dec8
JH
924/* Ask a scalar nicely to try to become an IV, if possible.
925 Not guaranteed to stay returning void */
926/* Macro won't actually call sv_2iv if already IOK */
927#define SvIV_please(sv) \
928 STMT_START {if (!SvIOKp(sv) && (SvNOK(sv) || SvPOK(sv))) \
929 (void) SvIV(sv); } STMT_END
79072805 930#define SvIV_set(sv, val) \
80b92232 931 STMT_START { assert(SvTYPE(sv) == SVt_IV || SvTYPE(sv) >= SVt_PVIV); \
b19bbeda 932 (((XPVIV*) SvANY(sv))->xiv_iv = (val)); } STMT_END
79072805 933#define SvNV_set(sv, val) \
80b92232 934 STMT_START { assert(SvTYPE(sv) == SVt_NV || SvTYPE(sv) >= SVt_PVNV); \
f599b64b 935 (((XPVNV*)SvANY(sv))->xnv_nv = (val)); } STMT_END
79072805 936#define SvPV_set(sv, val) \
80b92232 937 STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
339049b0 938 ((sv)->sv_u.svu_pv = (val)); } STMT_END
607fa7f2
SP
939#define SvUV_set(sv, val) \
940 STMT_START { assert(SvTYPE(sv) == SVt_IV || SvTYPE(sv) >= SVt_PVIV); \
941 (((XPVUV*)SvANY(sv))->xuv_uv = (val)); } STMT_END
b162af07
SP
942#define SvRV_set(sv, val) \
943 STMT_START { assert(SvTYPE(sv) >= SVt_RV); \
339049b0 944 ((sv)->sv_u.svu_rv = (val)); } STMT_END
b162af07
SP
945#define SvMAGIC_set(sv, val) \
946 STMT_START { assert(SvTYPE(sv) >= SVt_PVMG); \
947 (((XPVMG*)SvANY(sv))->xmg_magic = (val)); } STMT_END
948#define SvSTASH_set(sv, val) \
949 STMT_START { assert(SvTYPE(sv) >= SVt_PVMG); \
950 (((XPVMG*) SvANY(sv))->xmg_stash = (val)); } STMT_END
79072805 951#define SvCUR_set(sv, val) \
80b92232 952 STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
b162af07 953 (((XPV*) SvANY(sv))->xpv_cur = (val)); } STMT_END
79072805 954#define SvLEN_set(sv, val) \
80b92232 955 STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
b162af07 956 (((XPV*) SvANY(sv))->xpv_len = (val)); } STMT_END
7ae8ee9e
NC
957#define SvEND_set(sv, val) \
958 STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
959 (SvCUR(sv) = (val) - SvPVX(sv)); } STMT_END
79072805 960
b7e9a5c2 961#define SvPV_renew(sv,n) \
1da4ca5f
NC
962 STMT_START { SvLEN_set(sv, n); \
963 SvPV_set((sv), (MEM_WRAP_CHECK_(n,char) \
964 (char*)saferealloc((Malloc_t)SvPVX(sv), \
965 (MEM_SIZE)((n))))); \
966 } STMT_END
967
968#define SvPV_shrink_to_cur(sv) STMT_START { \
969 const STRLEN _lEnGtH = SvCUR(sv) + 1; \
970 SvPV_renew(sv, _lEnGtH); \
971 } STMT_END
b7e9a5c2 972
8bd4d4c5
NC
973#define SvPV_free(sv) \
974 STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
975 if (SvLEN(sv)) { \
976 if(SvOOK(sv)) { \
977 Safefree(SvPVX(sv) - SvIVX(sv)); \
978 SvFLAGS(sv) &= ~SVf_OOK; \
979 } else { \
980 Safefree(SvPVX(sv)); \
981 } \
982 } \
983 } STMT_END
984
672994ce
SP
985#define SvPVX_const(sv) ((const char*)SvPVX(sv))
986
79072805
LW
987#define BmRARE(sv) ((XPVBM*) SvANY(sv))->xbm_rare
988#define BmUSEFUL(sv) ((XPVBM*) SvANY(sv))->xbm_useful
989#define BmPREVIOUS(sv) ((XPVBM*) SvANY(sv))->xbm_previous
990
991#define FmLINES(sv) ((XPVFM*) SvANY(sv))->xfm_lines
992
993#define LvTYPE(sv) ((XPVLV*) SvANY(sv))->xlv_type
994#define LvTARG(sv) ((XPVLV*) SvANY(sv))->xlv_targ
995#define LvTARGOFF(sv) ((XPVLV*) SvANY(sv))->xlv_targoff
996#define LvTARGLEN(sv) ((XPVLV*) SvANY(sv))->xlv_targlen
997
8990e307
LW
998#define IoIFP(sv) ((XPVIO*) SvANY(sv))->xio_ifp
999#define IoOFP(sv) ((XPVIO*) SvANY(sv))->xio_ofp
1000#define IoDIRP(sv) ((XPVIO*) SvANY(sv))->xio_dirp
4755096e 1001#define IoANY(sv) ((XPVIO*) SvANY(sv))->xio_any
8990e307
LW
1002#define IoLINES(sv) ((XPVIO*) SvANY(sv))->xio_lines
1003#define IoPAGE(sv) ((XPVIO*) SvANY(sv))->xio_page
1004#define IoPAGE_LEN(sv) ((XPVIO*) SvANY(sv))->xio_page_len
1005#define IoLINES_LEFT(sv)((XPVIO*) SvANY(sv))->xio_lines_left
1006#define IoTOP_NAME(sv) ((XPVIO*) SvANY(sv))->xio_top_name
1007#define IoTOP_GV(sv) ((XPVIO*) SvANY(sv))->xio_top_gv
1008#define IoFMT_NAME(sv) ((XPVIO*) SvANY(sv))->xio_fmt_name
1009#define IoFMT_GV(sv) ((XPVIO*) SvANY(sv))->xio_fmt_gv
1010#define IoBOTTOM_NAME(sv)((XPVIO*) SvANY(sv))->xio_bottom_name
1011#define IoBOTTOM_GV(sv) ((XPVIO*) SvANY(sv))->xio_bottom_gv
1012#define IoSUBPROCESS(sv)((XPVIO*) SvANY(sv))->xio_subprocess
1013#define IoTYPE(sv) ((XPVIO*) SvANY(sv))->xio_type
1014#define IoFLAGS(sv) ((XPVIO*) SvANY(sv))->xio_flags
1015
50952442 1016/* IoTYPE(sv) is a single character telling the type of I/O connection. */
3b6c1aba
JH
1017#define IoTYPE_RDONLY '<'
1018#define IoTYPE_WRONLY '>'
1019#define IoTYPE_RDWR '+'
1020#define IoTYPE_APPEND 'a'
1021#define IoTYPE_PIPE '|'
1022#define IoTYPE_STD '-' /* stdin or stdout */
1023#define IoTYPE_SOCKET 's'
1024#define IoTYPE_CLOSED ' '
1025#define IoTYPE_IMPLICIT 'I' /* stdin or stdout or stderr */
1026#define IoTYPE_NUMERIC '#' /* fdopen */
03fcf2fc
GS
1027
1028/*
954c1994
GS
1029=for apidoc Am|bool|SvTAINTED|SV* sv
1030Checks to see if an SV is tainted. Returns TRUE if it is, FALSE if
1031not.
1032
1033=for apidoc Am|void|SvTAINTED_on|SV* sv
c55831ac 1034Marks an SV as tainted if tainting is enabled.
954c1994
GS
1035
1036=for apidoc Am|void|SvTAINTED_off|SV* sv
1037Untaints an SV. Be I<very> careful with this routine, as it short-circuits
1038some of Perl's fundamental security features. XS module authors should not
1039use this function unless they fully understand all the implications of
1040unconditionally untainting the value. Untainting should be done in the
1041standard perl fashion, via a carefully crafted regexp, rather than directly
1042untainting variables.
1043
1044=for apidoc Am|void|SvTAINT|SV* sv
c55831ac 1045Taints an SV if tainting is enabled.
954c1994
GS
1046
1047=cut
1048*/
1049
bbce6d69 1050#define SvTAINTED(sv) (SvMAGICAL(sv) && sv_tainted(sv))
3280af22
NIS
1051#define SvTAINTED_on(sv) STMT_START{ if(PL_tainting){sv_taint(sv);} }STMT_END
1052#define SvTAINTED_off(sv) STMT_START{ if(PL_tainting){sv_untaint(sv);} }STMT_END
bbce6d69 1053
c6ee37c5
MB
1054#define SvTAINT(sv) \
1055 STMT_START { \
3280af22 1056 if (PL_tainting) { \
3280af22 1057 if (PL_tainted) \
c6ee37c5
MB
1058 SvTAINTED_on(sv); \
1059 } \
1060 } STMT_END
79072805 1061
954c1994
GS
1062/*
1063=for apidoc Am|char*|SvPV_force|SV* sv|STRLEN len
5f08bad4
ST
1064Like C<SvPV> but will force the SV into containing just a string
1065(C<SvPOK_only>). You want force if you are going to update the C<SvPVX>
1066directly.
954c1994 1067
645c22ef 1068=for apidoc Am|char*|SvPV_force_nomg|SV* sv|STRLEN len
5f08bad4
ST
1069Like C<SvPV> but will force the SV into containing just a string
1070(C<SvPOK_only>). You want force if you are going to update the C<SvPVX>
1071directly. Doesn't process magic.
645c22ef 1072
954c1994 1073=for apidoc Am|char*|SvPV|SV* sv|STRLEN len
5f08bad4
ST
1074Returns a pointer to the string in the SV, or a stringified form of
1075the SV if the SV does not contain a string. The SV may cache the
1076stringified version becoming C<SvPOK>. Handles 'get' magic. See also
645c22ef
DM
1077C<SvPVx> for a version which guarantees to evaluate sv only once.
1078
1079=for apidoc Am|char*|SvPVx|SV* sv|STRLEN len
1080A version of C<SvPV> which guarantees to evaluate sv only once.
954c1994 1081
891f9566
YST
1082=for apidoc Am|char*|SvPV_nomg|SV* sv|STRLEN len
1083Like C<SvPV> but doesn't process magic.
1084
954c1994 1085=for apidoc Am|char*|SvPV_nolen|SV* sv
5f08bad4
ST
1086Returns a pointer to the string in the SV, or a stringified form of
1087the SV if the SV does not contain a string. The SV may cache the
1088stringified form becoming C<SvPOK>. Handles 'get' magic.
954c1994
GS
1089
1090=for apidoc Am|IV|SvIV|SV* sv
645c22ef
DM
1091Coerces the given SV to an integer and returns it. See C<SvIVx> for a
1092version which guarantees to evaluate sv only once.
1093
891f9566
YST
1094=for apidoc Am|IV|SvIV_nomg|SV* sv
1095Like C<SvIV> but doesn't process magic.
1096
645c22ef
DM
1097=for apidoc Am|IV|SvIVx|SV* sv
1098Coerces the given SV to an integer and returns it. Guarantees to evaluate
d1be9408 1099sv only once. Use the more efficient C<SvIV> otherwise.
954c1994
GS
1100
1101=for apidoc Am|NV|SvNV|SV* sv
645c22ef
DM
1102Coerce the given SV to a double and return it. See C<SvNVx> for a version
1103which guarantees to evaluate sv only once.
1104
1105=for apidoc Am|NV|SvNVx|SV* sv
1106Coerces the given SV to a double and returns it. Guarantees to evaluate
d1be9408 1107sv only once. Use the more efficient C<SvNV> otherwise.
954c1994
GS
1108
1109=for apidoc Am|UV|SvUV|SV* sv
645c22ef
DM
1110Coerces the given SV to an unsigned integer and returns it. See C<SvUVx>
1111for a version which guarantees to evaluate sv only once.
1112
891f9566
YST
1113=for apidoc Am|UV|SvUV_nomg|SV* sv
1114Like C<SvUV> but doesn't process magic.
1115
645c22ef
DM
1116=for apidoc Am|UV|SvUVx|SV* sv
1117Coerces the given SV to an unsigned integer and returns it. Guarantees to
d1be9408 1118evaluate sv only once. Use the more efficient C<SvUV> otherwise.
954c1994
GS
1119
1120=for apidoc Am|bool|SvTRUE|SV* sv
1121Returns a boolean indicating whether Perl would evaluate the SV as true or
1122false, defined or undefined. Does not handle 'get' magic.
1123
645c22ef 1124=for apidoc Am|char*|SvPVutf8_force|SV* sv|STRLEN len
b70b15d2 1125Like C<SvPV_force>, but converts sv to utf8 first if necessary.
645c22ef
DM
1126
1127=for apidoc Am|char*|SvPVutf8|SV* sv|STRLEN len
b70b15d2 1128Like C<SvPV>, but converts sv to utf8 first if necessary.
645c22ef 1129
b70b15d2
TJ
1130=for apidoc Am|char*|SvPVutf8_nolen|SV* sv
1131Like C<SvPV_nolen>, but converts sv to utf8 first if necessary.
645c22ef
DM
1132
1133=for apidoc Am|char*|SvPVbyte_force|SV* sv|STRLEN len
1134Like C<SvPV_force>, but converts sv to byte representation first if necessary.
1135
1136=for apidoc Am|char*|SvPVbyte|SV* sv|STRLEN len
1137Like C<SvPV>, but converts sv to byte representation first if necessary.
1138
b70b15d2 1139=for apidoc Am|char*|SvPVbyte_nolen|SV* sv
645c22ef
DM
1140Like C<SvPV_nolen>, but converts sv to byte representation first if necessary.
1141
1142=for apidoc Am|char*|SvPVutf8x_force|SV* sv|STRLEN len
b70b15d2 1143Like C<SvPV_force>, but converts sv to utf8 first if necessary.
d1be9408 1144Guarantees to evaluate sv only once; use the more efficient C<SvPVutf8_force>
645c22ef
DM
1145otherwise.
1146
1147=for apidoc Am|char*|SvPVutf8x|SV* sv|STRLEN len
b70b15d2 1148Like C<SvPV>, but converts sv to utf8 first if necessary.
d1be9408 1149Guarantees to evaluate sv only once; use the more efficient C<SvPVutf8>
645c22ef
DM
1150otherwise.
1151
1152=for apidoc Am|char*|SvPVbytex_force|SV* sv|STRLEN len
1153Like C<SvPV_force>, but converts sv to byte representation first if necessary.
d1be9408 1154Guarantees to evaluate sv only once; use the more efficient C<SvPVbyte_force>
645c22ef
DM
1155otherwise.
1156
1157=for apidoc Am|char*|SvPVbytex|SV* sv|STRLEN len
1158Like C<SvPV>, but converts sv to byte representation first if necessary.
d1be9408 1159Guarantees to evaluate sv only once; use the more efficient C<SvPVbyte>
645c22ef
DM
1160otherwise.
1161
19dbb8f1
NC
1162=for apidoc Am|bool|SvIsCOW|SV* sv
1163Returns a boolean indicating whether the SV is Copy-On-Write. (either shared
1164hash key scalars, or full Copy On Write scalars if 5.9.0 is configured for
1165COW)
1166
1167=for apidoc Am|bool|SvIsCOW_shared_hash|SV* sv
1168Returns a boolean indicating whether the SV is Copy-On-Write shared hash key
1169scalar.
645c22ef 1170
0f76ff59
MHM
1171=for apidoc Am|void|sv_catpvn_nomg|SV* sv|const char* ptr|STRLEN len
1172Like C<sv_catpvn> but doesn't process magic.
1173
1174=for apidoc Am|void|sv_setsv_nomg|SV* dsv|SV* ssv
1175Like C<sv_setsv> but doesn't process magic.
1176
1177=for apidoc Am|void|sv_catsv_nomg|SV* dsv|SV* ssv
1178Like C<sv_catsv> but doesn't process magic.
1179
954c1994
GS
1180=cut
1181*/
1182
25da4f38 1183/* Let us hope that bitmaps for UV and IV are the same */
463ee0b2 1184#define SvIV(sv) (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv))
ff68c719 1185#define SvUV(sv) (SvIOK(sv) ? SvUVX(sv) : sv_2uv(sv))
463ee0b2 1186#define SvNV(sv) (SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv))
79072805 1187
891f9566
YST
1188#define SvIV_nomg(sv) (SvIOK(sv) ? SvIVX(sv) : sv_2iv_flags(sv, 0))
1189#define SvUV_nomg(sv) (SvIOK(sv) ? SvUVX(sv) : sv_2uv_flags(sv, 0))
1190
baca2b92 1191/* ----*/
8d6d96c1 1192
8d6d96c1
HS
1193#define SvPV(sv, lp) SvPV_flags(sv, lp, SV_GMAGIC)
1194
8d6d96c1
HS
1195#define SvPV_flags(sv, lp, flags) \
1196 ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \
1197 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pv_flags(sv, &lp, flags))
79072805 1198
8d6d96c1 1199#define SvPV_force(sv, lp) SvPV_force_flags(sv, lp, SV_GMAGIC)
baca2b92 1200
8d6d96c1
HS
1201#define SvPV_force_nomg(sv, lp) SvPV_force_flags(sv, lp, 0)
1202
8d6d96c1 1203#define SvPV_force_flags(sv, lp, flags) \
ff68c719 1204 ((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST)) == SVf_POK \
8d6d96c1 1205 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvn_force_flags(sv, &lp, flags))
a0d0e21e 1206
1fa8b10d 1207#define SvPV_nolen(sv) \
5bc28da9
NIS
1208 ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \
1209 ? SvPVX(sv) : sv_2pv_nolen(sv))
70401c6b 1210
baca2b92 1211#define SvPV_nomg(sv, lp) SvPV_flags(sv, lp, 0)
5bc28da9 1212
baca2b92 1213/* ----*/
70401c6b 1214
5bc28da9
NIS
1215#define SvPVutf8(sv, lp) \
1216 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK|SVf_UTF8) \
1217 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pvutf8(sv, &lp))
70401c6b 1218
5bc28da9 1219#define SvPVutf8_force(sv, lp) \
70401c6b 1220 ((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST)) == (SVf_POK|SVf_UTF8) \
5bc28da9
NIS
1221 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvutf8n_force(sv, &lp))
1222
baca2b92 1223
5bc28da9
NIS
1224#define SvPVutf8_nolen(sv) \
1225 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK|SVf_UTF8)\
1226 ? SvPVX(sv) : sv_2pvutf8_nolen(sv))
70401c6b 1227
baca2b92
DM
1228/* ----*/
1229
5bc28da9
NIS
1230#define SvPVbyte(sv, lp) \
1231 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK) \
1232 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pvbyte(sv, &lp))
70401c6b 1233
5bc28da9
NIS
1234#define SvPVbyte_force(sv, lp) \
1235 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVf_THINKFIRST)) == (SVf_POK) \
a7ec4e2e 1236 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvbyten_force(sv, &lp))
5bc28da9 1237
5bc28da9
NIS
1238#define SvPVbyte_nolen(sv) \
1239 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK)\
1240 ? SvPVX(sv) : sv_2pvbyte_nolen(sv))
70401c6b 1241
1fa8b10d 1242
baca2b92
DM
1243
1244/* define FOOx(): idempotent versions of FOO(). If possible, use a local
1245 * var to evaluate the arg once; failing that, use a global if possible;
1246 * failing that, call a function to do the work
1247 */
1248
1249#define SvPVx_force(sv, lp) sv_pvn_force(sv, &lp)
1250#define SvPVutf8x_force(sv, lp) sv_pvutf8n_force(sv, &lp)
1251#define SvPVbytex_force(sv, lp) sv_pvbyten_force(sv, &lp)
1252
5dc8bdac 1253#if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
baca2b92 1254
3de3296f
AE
1255# define SvIVx(sv) ({SV *_sv = (SV*)(sv); SvIV(_sv); })
1256# define SvUVx(sv) ({SV *_sv = (SV*)(sv); SvUV(_sv); })
1257# define SvNVx(sv) ({SV *_sv = (SV*)(sv); SvNV(_sv); })
1258# define SvPVx(sv, lp) ({SV *_sv = (sv); SvPV(_sv, lp); })
1259# define SvPVutf8x(sv, lp) ({SV *_sv = (sv); SvPVutf8(_sv, lp); })
1260# define SvPVbytex(sv, lp) ({SV *_sv = (sv); SvPVbyte(_sv, lp); })
a80f87c4 1261# define SvTRUE(sv) ( \
8990e307
LW
1262 !sv \
1263 ? 0 \
1264 : SvPOK(sv) \
a80f87c4
GS
1265 ? (({XPV *nxpv = (XPV*)SvANY(sv); \
1266 nxpv && \
c2f1de04 1267 (nxpv->xpv_cur > 1 || \
339049b0 1268 (nxpv->xpv_cur && *(sv)->sv_u.svu_pv != '0')); }) \
79072805
LW
1269 ? 1 \
1270 : 0) \
1271 : \
1272 SvIOK(sv) \
463ee0b2 1273 ? SvIVX(sv) != 0 \
79072805 1274 : SvNOK(sv) \
463ee0b2
LW
1275 ? SvNVX(sv) != 0.0 \
1276 : sv_2bool(sv) )
3de3296f 1277# define SvTRUEx(sv) ({SV *_sv = (sv); SvTRUE(_sv); })
baca2b92 1278
a80f87c4 1279#else /* __GNUC__ */
baca2b92 1280
a80f87c4
GS
1281/* These inlined macros use globals, which will require a thread
1282 * declaration in user code, so we avoid them under threads */
1283
3db8f154
MB
1284# define SvIVx(sv) ((PL_Sv = (sv)), SvIV(PL_Sv))
1285# define SvUVx(sv) ((PL_Sv = (sv)), SvUV(PL_Sv))
1286# define SvNVx(sv) ((PL_Sv = (sv)), SvNV(PL_Sv))
1287# define SvPVx(sv, lp) ((PL_Sv = (sv)), SvPV(PL_Sv, lp))
1288# define SvPVutf8x(sv, lp) ((PL_Sv = (sv)), SvPVutf8(PL_Sv, lp))
1289# define SvPVbytex(sv, lp) ((PL_Sv = (sv)), SvPVbyte(PL_Sv, lp))
1290# define SvTRUE(sv) ( \
a80f87c4
GS
1291 !sv \
1292 ? 0 \
1293 : SvPOK(sv) \
7b2c381c 1294 ? ((PL_Xpv = (XPV*)SvANY(PL_Sv = (sv))) && \
c2f1de04 1295 (PL_Xpv->xpv_cur > 1 || \
339049b0 1296 (PL_Xpv->xpv_cur && *PL_Sv->sv_u.svu_pv != '0')) \
a80f87c4
GS
1297 ? 1 \
1298 : 0) \
1299 : \
1300 SvIOK(sv) \
1301 ? SvIVX(sv) != 0 \
1302 : SvNOK(sv) \
1303 ? SvNVX(sv) != 0.0 \
1304 : sv_2bool(sv) )
3db8f154 1305# define SvTRUEx(sv) ((PL_Sv = (sv)), SvTRUE(PL_Sv))
baca2b92
DM
1306#endif /* __GNU__ */
1307
765f542d
NC
1308#define SvIsCOW(sv) ((SvFLAGS(sv) & (SVf_FAKE | SVf_READONLY)) == \
1309 (SVf_FAKE | SVf_READONLY))
46187eeb 1310#define SvIsCOW_shared_hash(sv) (SvIsCOW(sv) && SvLEN(sv) == 0)
baca2b92 1311
c158a4fd
NC
1312#define SvSHARED_HASH(sv) SvUVX(sv)
1313
baca2b92
DM
1314/* flag values for sv_*_flags functions */
1315#define SV_IMMEDIATE_UNREF 1
1316#define SV_GMAGIC 2
765f542d 1317#define SV_COW_DROP_PV 4
88632417 1318#define SV_UTF8_NO_ENCODING 8
5fcdf167 1319#define SV_NOSTEAL 16
765f542d 1320
46187eeb
NC
1321/* We are about to replace the SV's current value. So if it's copy on write
1322 we need to normalise it. Use the SV_COW_DROP_PV flag hint to say that
1323 the value is about to get thrown away, so drop the PV rather than go to
1324 the effort of making a read-write copy only for it to get immediately
1325 discarded. */
765f542d
NC
1326
1327#define SV_CHECK_THINKFIRST_COW_DROP(sv) if (SvTHINKFIRST(sv)) \
1328 sv_force_normal_flags(sv, SV_COW_DROP_PV)
46187eeb
NC
1329
1330#ifdef PERL_COPY_ON_WRITE
1331# define SvRELEASE_IVX(sv) ((void)((SvFLAGS(sv) & (SVf_OOK|SVf_READONLY|SVf_FAKE)) \
b885210e 1332 && Perl_sv_release_IVX(aTHX_ sv)))
46187eeb 1333# define SvIsCOW_normal(sv) (SvIsCOW(sv) && SvLEN(sv))
ed252734
NC
1334
1335#define CAN_COW_MASK (SVs_OBJECT|SVs_GMG|SVs_SMG|SVs_RMG|SVf_IOK|SVf_NOK| \
1336 SVf_POK|SVf_ROK|SVp_IOK|SVp_NOK|SVp_POK|SVf_FAKE| \
1337 SVf_OOK|SVf_BREAK|SVf_READONLY|SVf_AMAGIC)
1338#define CAN_COW_FLAGS (SVp_POK|SVf_POK)
1339
765f542d 1340#else
0c34ef67 1341# define SvRELEASE_IVX(sv) SvOOK_off(sv)
765f542d 1342#endif /* PERL_COPY_ON_WRITE */
46187eeb 1343
765f542d
NC
1344#define SV_CHECK_THINKFIRST(sv) if (SvTHINKFIRST(sv)) \
1345 sv_force_normal_flags(sv, 0)
1346
1347
baca2b92
DM
1348/* all these 'functions' are now just macros */
1349
1350#define sv_pv(sv) SvPV_nolen(sv)
1351#define sv_pvutf8(sv) SvPVutf8_nolen(sv)
1352#define sv_pvbyte(sv) SvPVbyte_nolen(sv)
1353
1354#define sv_pvn_force_nomg(sv, lp) sv_pvn_force_flags(sv, lp, 0)
1355#define sv_utf8_upgrade_nomg(sv) sv_utf8_upgrade_flags(sv, 0)
1356#define sv_catpvn_nomg(dsv, sstr, slen) sv_catpvn_flags(dsv, sstr, slen, 0)
1357#define sv_setsv(dsv, ssv) sv_setsv_flags(dsv, ssv, SV_GMAGIC)
1358#define sv_setsv_nomg(dsv, ssv) sv_setsv_flags(dsv, ssv, 0)
1359#define sv_catsv(dsv, ssv) sv_catsv_flags(dsv, ssv, SV_GMAGIC)
1360#define sv_catsv_nomg(dsv, ssv) sv_catsv_flags(dsv, ssv, 0)
1361#define sv_catpvn(dsv, sstr, slen) sv_catpvn_flags(dsv, sstr, slen, SV_GMAGIC)
1362#define sv_2pv(sv, lp) sv_2pv_flags(sv, lp, SV_GMAGIC)
1363#define sv_2pv_nomg(sv, lp) sv_2pv_flags(sv, lp, 0)
1364#define sv_pvn_force(sv, lp) sv_pvn_force_flags(sv, lp, SV_GMAGIC)
1365#define sv_utf8_upgrade(sv) sv_utf8_upgrade_flags(sv, SV_GMAGIC)
891f9566
YST
1366#define sv_2iv(sv) sv_2iv_flags(sv, SV_GMAGIC)
1367#define sv_2uv(sv) sv_2uv_flags(sv, SV_GMAGIC)
baca2b92 1368
db79b45b
JH
1369/* Should be named SvCatPVN_utf8_upgrade? */
1370#define sv_catpvn_utf8_upgrade(dsv, sstr, slen, nsv) \
1371 STMT_START { \
1372 if (!(nsv)) \
1373 nsv = sv_2mortal(newSVpvn(sstr, slen)); \
1374 else \
1375 sv_setpvn(nsv, sstr, slen); \
1376 SvUTF8_off(nsv); \
1377 sv_utf8_upgrade(nsv); \
1378 sv_catsv(dsv, nsv); \
1379 } STMT_END
79072805 1380
954c1994
GS
1381/*
1382=for apidoc Am|SV*|newRV_inc|SV* sv
1383
1384Creates an RV wrapper for an SV. The reference count for the original SV is
1385incremented.
1386
1387=cut
1388*/
1389
5f05dabc 1390#define newRV_inc(sv) newRV(sv)
5f05dabc 1391
ef50df4b 1392/* the following macros update any magic values this sv is associated with */
79072805 1393
954c1994 1394/*
ccfc67b7
JH
1395=head1 Magical Functions
1396
954c1994
GS
1397=for apidoc Am|void|SvGETMAGIC|SV* sv
1398Invokes C<mg_get> on an SV if it has 'get' magic. This macro evaluates its
1399argument more than once.
1400
1401=for apidoc Am|void|SvSETMAGIC|SV* sv
1402Invokes C<mg_set> on an SV if it has 'set' magic. This macro evaluates its
1403argument more than once.
1404
1405=for apidoc Am|void|SvSetSV|SV* dsb|SV* ssv
1406Calls C<sv_setsv> if dsv is not the same as ssv. May evaluate arguments
1407more than once.
1408
1409=for apidoc Am|void|SvSetSV_nosteal|SV* dsv|SV* ssv
1410Calls a non-destructive version of C<sv_setsv> if dsv is not the same as
1411ssv. May evaluate arguments more than once.
1412
645c22ef
DM
1413=for apidoc Am|void|SvSetMagicSV|SV* dsb|SV* ssv
1414Like C<SvSetSV>, but does any set magic required afterwards.
1415
1416=for apidoc Am|void|SvSetMagicSV_nosteal|SV* dsv|SV* ssv
80663158 1417Like C<SvSetSV_nosteal>, but does any set magic required afterwards.
645c22ef 1418
68795e93
NIS
1419=for apidoc Am|void|SvSHARE|SV* sv
1420Arranges for sv to be shared between threads if a suitable module
1421has been loaded.
1422
1423=for apidoc Am|void|SvLOCK|SV* sv
1424Arranges for a mutual exclusion lock to be obtained on sv if a suitable module
1425has been loaded.
1426
1427=for apidoc Am|void|SvUNLOCK|SV* sv
1428Releases a mutual exclusion lock on sv if a suitable module
1429has been loaded.
1430
ccfc67b7
JH
1431=head1 SV Manipulation Functions
1432
679ac26e 1433=for apidoc Am|char *|SvGROW|SV* sv|STRLEN len
954c1994
GS
1434Expands the character buffer in the SV so that it has room for the
1435indicated number of bytes (remember to reserve space for an extra trailing
8cf8f3d1 1436NUL character). Calls C<sv_grow> to perform the expansion if necessary.
954c1994
GS
1437Returns a pointer to the character buffer.
1438
1439=cut
1440*/
1441
68795e93
NIS
1442#define SvSHARE(sv) CALL_FPTR(PL_sharehook)(aTHX_ sv)
1443#define SvLOCK(sv) CALL_FPTR(PL_lockhook)(aTHX_ sv)
1444#define SvUNLOCK(sv) CALL_FPTR(PL_unlockhook)(aTHX_ sv)
1445
189b2af5
GS
1446#define SvGETMAGIC(x) STMT_START { if (SvGMAGICAL(x)) mg_get(x); } STMT_END
1447#define SvSETMAGIC(x) STMT_START { if (SvSMAGICAL(x)) mg_set(x); } STMT_END
79072805 1448
54310121 1449#define SvSetSV_and(dst,src,finally) \
189b2af5 1450 STMT_START { \
54310121
PP
1451 if ((dst) != (src)) { \
1452 sv_setsv(dst, src); \
1453 finally; \
189b2af5
GS
1454 } \
1455 } STMT_END
54310121 1456#define SvSetSV_nosteal_and(dst,src,finally) \
189b2af5 1457 STMT_START { \
8ebc5c01 1458 if ((dst) != (src)) { \
5fcdf167 1459 sv_setsv_flags(dst, src, SV_GMAGIC | SV_NOSTEAL); \
54310121 1460 finally; \
189b2af5
GS
1461 } \
1462 } STMT_END
79072805 1463
54310121 1464#define SvSetSV(dst,src) \
c9d716f7 1465 SvSetSV_and(dst,src,/*nothing*/;)
54310121 1466#define SvSetSV_nosteal(dst,src) \
c9d716f7 1467 SvSetSV_nosteal_and(dst,src,/*nothing*/;)
54310121
PP
1468
1469#define SvSetMagicSV(dst,src) \
1470 SvSetSV_and(dst,src,SvSETMAGIC(dst))
1471#define SvSetMagicSV_nosteal(dst,src) \
1472 SvSetSV_nosteal_and(dst,src,SvSETMAGIC(dst))
1473
db79b45b 1474
1045810a 1475#if !defined(SKIP_DEBUGGING)
79072805 1476#define SvPEEK(sv) sv_peek(sv)
3967c732
JD
1477#else
1478#define SvPEEK(sv) ""
1479#endif
79072805 1480
5dc8bdac 1481#define SvIMMORTAL(sv) ((sv)==&PL_sv_undef || (sv)==&PL_sv_yes || (sv)==&PL_sv_no || (sv)==&PL_sv_placeholder)
36477c24 1482
3280af22 1483#define boolSV(b) ((b) ? &PL_sv_yes : &PL_sv_no)
54310121 1484
79072805
LW
1485#define isGV(sv) (SvTYPE(sv) == SVt_PVGV)
1486
933fea7f
GS
1487#define SvGROW(sv,len) (SvLEN(sv) < (len) ? sv_grow(sv,len) : SvPVX(sv))
1488#define Sv_Grow sv_grow
3d35f11b 1489
a0739874
DM
1490#define CLONEf_COPY_STACKS 1
1491#define CLONEf_KEEP_PTR_TABLE 2
c43294b8 1492#define CLONEf_CLONE_HOST 4
0405e91e 1493#define CLONEf_JOIN_IN 8
a0739874 1494
8cf8f3d1 1495struct clone_params {
d2d73c3e
AB
1496 AV* stashes;
1497 UV flags;
59b40662 1498 PerlInterpreter *proto_perl;
8cf8f3d1 1499};
102d3b8a
NC
1500
1501/*
1502 * Local variables:
1503 * c-indentation-style: bsd
1504 * c-basic-offset: 4
1505 * indent-tabs-mode: t
1506 * End:
1507 *
1508 * ex: set ts=8 sts=4 sw=4 noet:
1509 */