Commit | Line | Data |
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a0d0e21e | 1 | /* sv.h |
79072805 | 2 | * |
1129b882 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
83706693 | 4 | * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 by Larry Wall and others |
79072805 LW |
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 | * | |
79072805 LW |
9 | */ |
10 | ||
a0d0e21e LW |
11 | #ifdef sv_flags |
12 | #undef sv_flags /* Convex has this in <signal.h> for sigvec() */ | |
13 | #endif | |
14 | ||
954c1994 | 15 | /* |
ccfc67b7 JH |
16 | =head1 SV Flags |
17 | ||
954c1994 | 18 | =for apidoc AmU||svtype |
75af9d73 | 19 | An enum of flags for Perl types. These are found in the file F<sv.h> |
954c1994 GS |
20 | in the C<svtype> enum. Test these flags with the C<SvTYPE> macro. |
21 | ||
a5e62da0 FC |
22 | The types are: |
23 | ||
24 | SVt_NULL | |
a5e62da0 FC |
25 | SVt_IV |
26 | SVt_NV | |
27 | SVt_RV | |
28 | SVt_PV | |
29 | SVt_PVIV | |
30 | SVt_PVNV | |
31 | SVt_PVMG | |
e94d9b54 | 32 | SVt_INVLIST |
a5e62da0 FC |
33 | SVt_REGEXP |
34 | SVt_PVGV | |
35 | SVt_PVLV | |
36 | SVt_PVAV | |
37 | SVt_PVHV | |
38 | SVt_PVCV | |
39 | SVt_PVFM | |
40 | SVt_PVIO | |
41 | ||
42 | These are most easily explained from the bottom up. | |
43 | ||
796b6530 KW |
44 | C<SVt_PVIO> is for I/O objects, C<SVt_PVFM> for formats, C<SVt_PVCV> for |
45 | subroutines, C<SVt_PVHV> for hashes and C<SVt_PVAV> for arrays. | |
a5e62da0 FC |
46 | |
47 | All the others are scalar types, that is, things that can be bound to a | |
48 | C<$> variable. For these, the internal types are mostly orthogonal to | |
49 | types in the Perl language. | |
50 | ||
51 | Hence, checking C<< SvTYPE(sv) < SVt_PVAV >> is the best way to see whether | |
52 | something is a scalar. | |
53 | ||
796b6530 KW |
54 | C<SVt_PVGV> represents a typeglob. If C<!SvFAKE(sv)>, then it is a real, |
55 | incoercible typeglob. If C<SvFAKE(sv)>, then it is a scalar to which a | |
a5e62da0 | 56 | typeglob has been assigned. Assigning to it again will stop it from being |
796b6530 | 57 | a typeglob. C<SVt_PVLV> represents a scalar that delegates to another scalar |
a5e62da0 FC |
58 | behind the scenes. It is used, e.g., for the return value of C<substr> and |
59 | for tied hash and array elements. It can hold any scalar value, including | |
796b6530 KW |
60 | a typeglob. C<SVt_REGEXP> is for regular |
61 | expressions. C<SVt_INVLIST> is for Perl | |
e94d9b54 | 62 | core internal use only. |
a5e62da0 | 63 | |
796b6530 | 64 | C<SVt_PVMG> represents a "normal" scalar (not a typeglob, regular expression, |
a5e62da0 FC |
65 | or delegate). Since most scalars do not need all the internal fields of a |
66 | PVMG, we save memory by allocating smaller structs when possible. All the | |
796b6530 KW |
67 | other types are just simpler forms of C<SVt_PVMG>, with fewer internal fields. |
68 | C<SVt_NULL> can only hold undef. C<SVt_IV> can hold undef, an integer, or a | |
69 | reference. (C<SVt_RV> is an alias for C<SVt_IV>, which exists for backward | |
70 | compatibility.) C<SVt_NV> can hold any of those or a double. C<SVt_PV> can only | |
71 | hold C<undef> or a string. C<SVt_PVIV> is a superset of C<SVt_PV> and C<SVt_IV>. | |
72 | C<SVt_PVNV> is similar. C<SVt_PVMG> can hold anything C<SVt_PVNV> can hold, but it | |
a5e62da0 FC |
73 | can, but does not have to, be blessed or magical. |
74 | ||
75 | =for apidoc AmU||SVt_NULL | |
76 | Type flag for scalars. See L</svtype>. | |
954c1994 GS |
77 | |
78 | =for apidoc AmU||SVt_IV | |
a5e62da0 | 79 | Type flag for scalars. See L</svtype>. |
954c1994 GS |
80 | |
81 | =for apidoc AmU||SVt_NV | |
a5e62da0 FC |
82 | Type flag for scalars. See L</svtype>. |
83 | ||
84 | =for apidoc AmU||SVt_PV | |
85 | Type flag for scalars. See L</svtype>. | |
86 | ||
87 | =for apidoc AmU||SVt_PVIV | |
88 | Type flag for scalars. See L</svtype>. | |
89 | ||
90 | =for apidoc AmU||SVt_PVNV | |
91 | Type flag for scalars. See L</svtype>. | |
954c1994 GS |
92 | |
93 | =for apidoc AmU||SVt_PVMG | |
a5e62da0 FC |
94 | Type flag for scalars. See L</svtype>. |
95 | ||
e94d9b54 KW |
96 | =for apidoc AmU||SVt_INVLIST |
97 | Type flag for scalars. See L</svtype>. | |
98 | ||
a5e62da0 FC |
99 | =for apidoc AmU||SVt_REGEXP |
100 | Type flag for regular expressions. See L</svtype>. | |
101 | ||
102 | =for apidoc AmU||SVt_PVGV | |
103 | Type flag for typeglobs. See L</svtype>. | |
104 | ||
105 | =for apidoc AmU||SVt_PVLV | |
106 | Type flag for scalars. See L</svtype>. | |
954c1994 GS |
107 | |
108 | =for apidoc AmU||SVt_PVAV | |
a5e62da0 | 109 | Type flag for arrays. See L</svtype>. |
954c1994 GS |
110 | |
111 | =for apidoc AmU||SVt_PVHV | |
a5e62da0 | 112 | Type flag for hashes. See L</svtype>. |
954c1994 GS |
113 | |
114 | =for apidoc AmU||SVt_PVCV | |
a5e62da0 FC |
115 | Type flag for subroutines. See L</svtype>. |
116 | ||
117 | =for apidoc AmU||SVt_PVFM | |
118 | Type flag for formats. See L</svtype>. | |
119 | ||
120 | =for apidoc AmU||SVt_PVIO | |
121 | Type flag for I/O objects. See L</svtype>. | |
954c1994 GS |
122 | |
123 | =cut | |
1078c6a2 KW |
124 | |
125 | These are ordered so that the simpler types have a lower value; SvUPGRADE | |
126 | doesn't allow you to upgrade from a higher numbered type to a lower numbered | |
127 | one; also there is code that assumes that anything that has as a PV component | |
128 | has a type numbered >= SVt_PV. | |
954c1994 GS |
129 | */ |
130 | ||
1078c6a2 | 131 | |
79072805 | 132 | typedef enum { |
a0d0e21e | 133 | SVt_NULL, /* 0 */ |
e94d9b54 KW |
134 | /* BIND was here, before INVLIST replaced it. */ |
135 | SVt_IV, /* 1 */ | |
136 | SVt_NV, /* 2 */ | |
4df7f6af | 137 | /* RV was here, before it was merged with IV. */ |
e94d9b54 KW |
138 | SVt_PV, /* 3 */ |
139 | SVt_INVLIST, /* 4, implemented as a PV */ | |
4df7f6af NC |
140 | SVt_PVIV, /* 5 */ |
141 | SVt_PVNV, /* 6 */ | |
142 | SVt_PVMG, /* 7 */ | |
5c35adbb | 143 | SVt_REGEXP, /* 8 */ |
cecf5685 | 144 | /* PVBM was here, before BIND replaced it. */ |
4ce457a6 TP |
145 | SVt_PVGV, /* 9 */ |
146 | SVt_PVLV, /* 10 */ | |
147 | SVt_PVAV, /* 11 */ | |
148 | SVt_PVHV, /* 12 */ | |
149 | SVt_PVCV, /* 13 */ | |
a0d0e21e | 150 | SVt_PVFM, /* 14 */ |
93e68bfb JC |
151 | SVt_PVIO, /* 15 */ |
152 | SVt_LAST /* keep last in enum. used to size arrays */ | |
79072805 LW |
153 | } svtype; |
154 | ||
f1fb8741 | 155 | /* *** any alterations to the SV types above need to be reflected in |
e94d9b54 KW |
156 | * SVt_MASK and the various PL_valid_types_* tables. As of this writing those |
157 | * tables are in perl.h. There are also two affected names tables in dump.c, | |
158 | * one in B.xs, and 'bodies_by_type[]' in sv.c */ | |
f1fb8741 DM |
159 | |
160 | #define SVt_MASK 0xf /* smallest bitmask that covers all types */ | |
161 | ||
cecf5685 | 162 | #ifndef PERL_CORE |
a5c7cb08 | 163 | /* Fast Boyer Moore tables are now stored in magic attached to PVMGs */ |
cecf5685 | 164 | # define SVt_PVBM SVt_PVMG |
4df7f6af NC |
165 | /* Anything wanting to create a reference from clean should ensure that it has |
166 | a scalar of type SVt_IV now: */ | |
167 | # define SVt_RV SVt_IV | |
cecf5685 NC |
168 | #endif |
169 | ||
d2a0f284 | 170 | /* There is collusion here with sv_clear - sv_clear exits early for SVt_NULL |
db93c0c4 NC |
171 | so never reaches the clause at the end that uses sv_type_details->body_size |
172 | to determine whether to call safefree(). Hence body_size can be set | |
173 | non-zero to record the size of HEs, without fear of bogus frees. */ | |
6a93a7e5 NC |
174 | #if defined(PERL_IN_HV_C) || defined(PERL_IN_XS_APITEST) |
175 | #define HE_SVSLOT SVt_NULL | |
176 | #endif | |
ff121dc6 DD |
177 | #ifdef PERL_IN_SV_C |
178 | # define SVt_FIRST SVt_NULL /* the type of SV that new_SV() in sv.c returns */ | |
179 | #endif | |
43e6e717 | 180 | |
232d1c15 NC |
181 | #define PERL_ARENA_ROOTS_SIZE (SVt_LAST) |
182 | ||
43e6e717 NC |
183 | /* typedefs to eliminate some typing */ |
184 | typedef struct he HE; | |
185 | typedef struct hek HEK; | |
186 | ||
79072805 LW |
187 | /* Using C's structural equivalence to help emulate C++ inheritance here... */ |
188 | ||
30153bd2 JC |
189 | /* start with 2 sv-head building blocks */ |
190 | #define _SV_HEAD(ptrtype) \ | |
191 | ptrtype sv_any; /* pointer to body */ \ | |
192 | U32 sv_refcnt; /* how many references to us */ \ | |
193 | U32 sv_flags /* what we are */ | |
194 | ||
5b306eef DD |
195 | #if NVSIZE <= IVSIZE |
196 | # define _NV_BODYLESS_UNION NV svu_nv; | |
197 | #else | |
198 | # define _NV_BODYLESS_UNION | |
199 | #endif | |
200 | ||
30153bd2 JC |
201 | #define _SV_HEAD_UNION \ |
202 | union { \ | |
2a12fdfc | 203 | char* svu_pv; /* pointer to malloced string */ \ |
30153bd2 JC |
204 | IV svu_iv; \ |
205 | UV svu_uv; \ | |
5b306eef | 206 | _NV_BODYLESS_UNION \ |
30153bd2 | 207 | SV* svu_rv; /* pointer to another SV */ \ |
8d919b0a | 208 | struct regexp* svu_rx; \ |
30153bd2 JC |
209 | SV** svu_array; \ |
210 | HE** svu_hash; \ | |
f7877b28 | 211 | GP* svu_gp; \ |
6f7e8353 | 212 | PerlIO *svu_fp; \ |
bb3b7d7b DD |
213 | } sv_u \ |
214 | _SV_HEAD_DEBUG | |
30153bd2 | 215 | |
bb3b7d7b DD |
216 | #ifdef DEBUG_LEAKING_SCALARS |
217 | #define _SV_HEAD_DEBUG ;\ | |
218 | PERL_BITFIELD32 sv_debug_optype:9; /* the type of OP that allocated us */ \ | |
219 | PERL_BITFIELD32 sv_debug_inpad:1; /* was allocated in a pad for an OP */ \ | |
220 | PERL_BITFIELD32 sv_debug_line:16; /* the line where we were allocated */ \ | |
221 | UV sv_debug_serial; /* serial number of sv allocation */ \ | |
222 | char * sv_debug_file; /* the file where we were allocated */ \ | |
223 | SV * sv_debug_parent /* what we were cloned from (ithreads)*/ | |
224 | #else | |
225 | #define _SV_HEAD_DEBUG | |
226 | #endif | |
30153bd2 | 227 | |
5e045b90 | 228 | struct STRUCT_SV { /* struct sv { */ |
30153bd2 JC |
229 | _SV_HEAD(void*); |
230 | _SV_HEAD_UNION; | |
79072805 LW |
231 | }; |
232 | ||
233 | struct gv { | |
30153bd2 JC |
234 | _SV_HEAD(XPVGV*); /* pointer to xpvgv body */ |
235 | _SV_HEAD_UNION; | |
79072805 LW |
236 | }; |
237 | ||
238 | struct cv { | |
30153bd2 JC |
239 | _SV_HEAD(XPVCV*); /* pointer to xpvcv body */ |
240 | _SV_HEAD_UNION; | |
79072805 LW |
241 | }; |
242 | ||
243 | struct av { | |
0f7b1ae0 | 244 | _SV_HEAD(XPVAV*); /* pointer to xpvav body */ |
30153bd2 | 245 | _SV_HEAD_UNION; |
79072805 LW |
246 | }; |
247 | ||
248 | struct hv { | |
30153bd2 JC |
249 | _SV_HEAD(XPVHV*); /* pointer to xpvhv body */ |
250 | _SV_HEAD_UNION; | |
8990e307 LW |
251 | }; |
252 | ||
253 | struct io { | |
30153bd2 JC |
254 | _SV_HEAD(XPVIO*); /* pointer to xpvio body */ |
255 | _SV_HEAD_UNION; | |
79072805 LW |
256 | }; |
257 | ||
d2f13c59 NC |
258 | struct p5rx { |
259 | _SV_HEAD(struct regexp*); /* pointer to regexp body */ | |
260 | _SV_HEAD_UNION; | |
261 | }; | |
262 | ||
30153bd2 | 263 | #undef _SV_HEAD |
0f7b1ae0 | 264 | #undef _SV_HEAD_UNION /* ensure no pollution */ |
30153bd2 | 265 | |
954c1994 | 266 | /* |
ccfc67b7 JH |
267 | =head1 SV Manipulation Functions |
268 | ||
954c1994 | 269 | =for apidoc Am|U32|SvREFCNT|SV* sv |
cb198164 YO |
270 | Returns the value of the object's reference count. Exposed |
271 | to perl code via Internals::SvREFCNT(). | |
954c1994 GS |
272 | |
273 | =for apidoc Am|SV*|SvREFCNT_inc|SV* sv | |
5df2f140 | 274 | Increments the reference count of the given SV, returning the SV. |
954c1994 | 275 | |
796b6530 KW |
276 | All of the following C<SvREFCNT_inc>* macros are optimized versions of |
277 | C<SvREFCNT_inc>, and can be replaced with C<SvREFCNT_inc>. | |
b37c2d43 AL |
278 | |
279 | =for apidoc Am|SV*|SvREFCNT_inc_NN|SV* sv | |
796b6530 KW |
280 | Same as C<SvREFCNT_inc>, but can only be used if you know C<sv> |
281 | is not C<NULL>. Since we don't have to check the NULLness, it's faster | |
b37c2d43 AL |
282 | and smaller. |
283 | ||
f2403e57 | 284 | =for apidoc Am|void|SvREFCNT_inc_void|SV* sv |
796b6530 | 285 | Same as C<SvREFCNT_inc>, but can only be used if you don't need the |
b37c2d43 AL |
286 | return value. The macro doesn't need to return a meaningful value. |
287 | ||
f2403e57 | 288 | =for apidoc Am|void|SvREFCNT_inc_void_NN|SV* sv |
796b6530 KW |
289 | Same as C<SvREFCNT_inc>, but can only be used if you don't need the return |
290 | value, and you know that C<sv> is not C<NULL>. The macro doesn't need | |
b37c2d43 AL |
291 | to return a meaningful value, or check for NULLness, so it's smaller |
292 | and faster. | |
293 | ||
294 | =for apidoc Am|SV*|SvREFCNT_inc_simple|SV* sv | |
796b6530 | 295 | Same as C<SvREFCNT_inc>, but can only be used with expressions without side |
4ea561bc | 296 | effects. Since we don't have to store a temporary value, it's faster. |
b37c2d43 AL |
297 | |
298 | =for apidoc Am|SV*|SvREFCNT_inc_simple_NN|SV* sv | |
796b6530 KW |
299 | Same as C<SvREFCNT_inc_simple>, but can only be used if you know C<sv> |
300 | is not C<NULL>. Since we don't have to check the NULLness, it's faster | |
b37c2d43 AL |
301 | and smaller. |
302 | ||
f2403e57 | 303 | =for apidoc Am|void|SvREFCNT_inc_simple_void|SV* sv |
796b6530 | 304 | Same as C<SvREFCNT_inc_simple>, but can only be used if you don't need the |
b37c2d43 AL |
305 | return value. The macro doesn't need to return a meaningful value. |
306 | ||
f2403e57 | 307 | =for apidoc Am|void|SvREFCNT_inc_simple_void_NN|SV* sv |
796b6530 KW |
308 | Same as C<SvREFCNT_inc>, but can only be used if you don't need the return |
309 | value, and you know that C<sv> is not C<NULL>. The macro doesn't need | |
e638c624 MHM |
310 | to return a meaningful value, or check for NULLness, so it's smaller |
311 | and faster. | |
b37c2d43 | 312 | |
954c1994 | 313 | =for apidoc Am|void|SvREFCNT_dec|SV* sv |
796b6530 | 314 | Decrements the reference count of the given SV. C<sv> may be C<NULL>. |
954c1994 | 315 | |
4a9a56a7 | 316 | =for apidoc Am|void|SvREFCNT_dec_NN|SV* sv |
796b6530 KW |
317 | Same as C<SvREFCNT_dec>, but can only be used if you know C<sv> |
318 | is not C<NULL>. Since we don't have to check the NULLness, it's faster | |
4a9a56a7 DM |
319 | and smaller. |
320 | ||
954c1994 | 321 | =for apidoc Am|svtype|SvTYPE|SV* sv |
fbe13c60 | 322 | Returns the type of the SV. See C<L</svtype>>. |
954c1994 GS |
323 | |
324 | =for apidoc Am|void|SvUPGRADE|SV* sv|svtype type | |
325 | Used to upgrade an SV to a more complex form. Uses C<sv_upgrade> to | |
fbe13c60 | 326 | perform the upgrade if necessary. See C<L</svtype>>. |
954c1994 GS |
327 | |
328 | =cut | |
329 | */ | |
330 | ||
463ee0b2 | 331 | #define SvANY(sv) (sv)->sv_any |
79072805 | 332 | #define SvFLAGS(sv) (sv)->sv_flags |
aeea060c | 333 | #define SvREFCNT(sv) (sv)->sv_refcnt |
a863c7d1 | 334 | |
27669aa4 FC |
335 | #define SvREFCNT_inc(sv) S_SvREFCNT_inc(MUTABLE_SV(sv)) |
336 | #define SvREFCNT_inc_simple(sv) SvREFCNT_inc(sv) | |
337 | #define SvREFCNT_inc_NN(sv) S_SvREFCNT_inc_NN(MUTABLE_SV(sv)) | |
338 | #define SvREFCNT_inc_void(sv) S_SvREFCNT_inc_void(MUTABLE_SV(sv)) | |
8990e307 | 339 | |
b37c2d43 | 340 | /* These guys don't need the curly blocks */ |
e638c624 | 341 | #define SvREFCNT_inc_simple_void(sv) STMT_START { if (sv) SvREFCNT(sv)++; } STMT_END |
b1bc3f34 NC |
342 | #define SvREFCNT_inc_simple_NN(sv) (++(SvREFCNT(sv)),MUTABLE_SV(sv)) |
343 | #define SvREFCNT_inc_void_NN(sv) (void)(++SvREFCNT(MUTABLE_SV(sv))) | |
344 | #define SvREFCNT_inc_simple_void_NN(sv) (void)(++SvREFCNT(MUTABLE_SV(sv))) | |
b37c2d43 | 345 | |
75e16a44 | 346 | #define SvREFCNT_dec(sv) S_SvREFCNT_dec(aTHX_ MUTABLE_SV(sv)) |
4a9a56a7 | 347 | #define SvREFCNT_dec_NN(sv) S_SvREFCNT_dec_NN(aTHX_ MUTABLE_SV(sv)) |
a863c7d1 | 348 | |
8990e307 | 349 | #define SVTYPEMASK 0xff |
1fef4616 | 350 | #define SvTYPE(sv) ((svtype)((sv)->sv_flags & SVTYPEMASK)) |
79072805 | 351 | |
0565a181 NC |
352 | /* Sadly there are some parts of the core that have pointers to already-freed |
353 | SV heads, and rely on being able to tell that they are now free. So mark | |
354 | them all by using a consistent macro. */ | |
7667e7f1 | 355 | #define SvIS_FREED(sv) UNLIKELY(((sv)->sv_flags == SVTYPEMASK)) |
0565a181 | 356 | |
24e08842 DM |
357 | /* this is defined in this peculiar way to avoid compiler warnings. |
358 | * See the <20121213131428.GD1842@iabyn.com> thread in p5p */ | |
463ea229 | 359 | #define SvUPGRADE(sv, mt) \ |
24e08842 | 360 | ((void)(SvTYPE(sv) >= (mt) || (sv_upgrade(sv, mt),1))) |
79072805 | 361 | |
3f7ef1d4 NC |
362 | #define SVf_IOK 0x00000100 /* has valid public integer value */ |
363 | #define SVf_NOK 0x00000200 /* has valid public numeric value */ | |
364 | #define SVf_POK 0x00000400 /* has valid public pointer value */ | |
365 | #define SVf_ROK 0x00000800 /* has a valid reference pointer */ | |
366 | ||
367 | #define SVp_IOK 0x00001000 /* has valid non-public integer value */ | |
368 | #define SVp_NOK 0x00002000 /* has valid non-public numeric value */ | |
369 | #define SVp_POK 0x00004000 /* has valid non-public pointer value */ | |
9a70c74b | 370 | #define SVp_SCREAM 0x00008000 /* currently unused on plain scalars */ |
2e5b91de NC |
371 | #define SVphv_CLONEABLE SVp_SCREAM /* PVHV (stashes) clone its objects */ |
372 | #define SVpgv_GP SVp_SCREAM /* GV has a valid GP */ | |
1ccdb730 NC |
373 | #define SVprv_PCS_IMPORTED SVp_SCREAM /* RV is a proxy for a constant |
374 | subroutine in another package. Set the | |
7eeb6e4e | 375 | GvIMPORTED_CV_on() if it needs to be |
1ccdb730 | 376 | expanded to a real GV */ |
cc25b9e2 DM |
377 | |
378 | /* SVf_PROTECT is what SVf_READONLY should have been: i.e. modifying | |
379 | * this SV is completely illegal. However, SVf_READONLY (via | |
380 | * Internals::SvREADONLY()) has come to be seen as a flag that can be | |
381 | * temporarily set and unset by the user to indicate e.g. whether a hash | |
382 | * is "locked". Now, Hash::Util et al only set SVf_READONLY, while core | |
383 | * sets both (SVf_READONLY|SVf_PROTECT) to indicate both to core and user | |
384 | * code that this SV should not be messed with. | |
385 | */ | |
fd01b4b7 | 386 | #define SVf_PROTECT 0x00010000 /* very read-only */ |
c0683843 | 387 | #define SVs_PADTMP 0x00020000 /* in use as tmp */ |
c0683843 FC |
388 | #define SVs_PADSTALE 0x00040000 /* lexical has gone out of scope; |
389 | only used when !PADTMP */ | |
2c39754a | 390 | #define SVs_TEMP 0x00080000 /* mortal (implies string is stealable) */ |
3f7ef1d4 NC |
391 | #define SVs_OBJECT 0x00100000 /* is "blessed" */ |
392 | #define SVs_GMG 0x00200000 /* has magical get method */ | |
393 | #define SVs_SMG 0x00400000 /* has magical set method */ | |
394 | #define SVs_RMG 0x00800000 /* has random magical methods */ | |
395 | ||
fea3622c | 396 | #define SVf_FAKE 0x01000000 /* 0: glob is just a copy |
3f7ef1d4 | 397 | 1: SV head arena wasn't malloc()ed |
e3918bb7 | 398 | 2: For PVCV, whether CvUNIQUE(cv) |
3f7ef1d4 NC |
399 | refers to an eval or once only |
400 | [CvEVAL(cv), CvSPECIAL(cv)] | |
0f94cb1f | 401 | 3: HV: informally reserved by DAPM |
2c39754a | 402 | for vtables */ |
3f7ef1d4 NC |
403 | #define SVf_OOK 0x02000000 /* has valid offset value. For a PVHV this |
404 | means that a hv_aux struct is present | |
405 | after the main array */ | |
406 | #define SVf_BREAK 0x04000000 /* refcnt is artificially low - used by | |
36c662f4 NC |
407 | SVs in final arena cleanup. |
408 | Set in S_regtry on PL_reg_curpm, so that | |
a5f48505 DM |
409 | perl_destruct will skip it. |
410 | Used for mark and sweep by OP_AASSIGN | |
411 | */ | |
3f7ef1d4 | 412 | #define SVf_READONLY 0x08000000 /* may not be modified */ |
8990e307 | 413 | |
a0d0e21e | 414 | |
8990e307 | 415 | |
5bc28da9 | 416 | |
a623f893 FC |
417 | #define SVf_THINKFIRST (SVf_READONLY|SVf_PROTECT|SVf_ROK|SVf_FAKE \ |
418 | |SVs_RMG|SVf_IsCOW) | |
5bc28da9 | 419 | |
a0d0e21e | 420 | #define SVf_OK (SVf_IOK|SVf_NOK|SVf_POK|SVf_ROK| \ |
2e5b91de | 421 | SVp_IOK|SVp_NOK|SVp_POK|SVpgv_GP) |
a0d0e21e | 422 | |
7a77f1af | 423 | #define PRIVSHIFT 4 /* (SVp_?OK >> PRIVSHIFT) == SVf_?OK */ |
8990e307 | 424 | |
d3d326f2 DM |
425 | /* SVf_AMAGIC means that the stash *may* have have overload methods. It's |
426 | * set each time a function is compiled into a stash, and is reset by the | |
427 | * overload code when called for the first time and finds that there are | |
428 | * no overload methods. Note that this used to be set on the object; but | |
429 | * is now only set on stashes. | |
430 | */ | |
cd028baa | 431 | #define SVf_AMAGIC 0x10000000 /* has magical overloaded methods */ |
45eaf8af FC |
432 | #define SVf_IsCOW 0x10000000 /* copy on write (shared hash key if |
433 | SvLEN == 0) */ | |
70bc21b7 | 434 | |
44b2d6d6 FC |
435 | /* Ensure this value does not clash with the GV_ADD* flags in gv.h, or the |
436 | CV_CKPROTO_* flags in op.c, or the padadd_* flags in pad.h: */ | |
cd028baa NC |
437 | #define SVf_UTF8 0x20000000 /* SvPV is UTF-8 encoded |
438 | This is also set on RVs whose overloaded | |
439 | stringification is UTF-8. This might | |
440 | only happen as a side effect of SvPV() */ | |
70bc21b7 DM |
441 | /* PVHV */ |
442 | #define SVphv_SHAREKEYS 0x20000000 /* PVHV keys live on shared string table */ | |
8990e307 | 443 | |
2e9f07a2 NC |
444 | /* PVAV could probably use 0x2000000 without conflict. I assume that PVFM can |
445 | be UTF-8 encoded, and PVCVs could well have UTF-8 prototypes. PVIOs haven't | |
446 | been restructured, so sometimes get used as string buffers. */ | |
447 | ||
70bc21b7 DM |
448 | |
449 | /* Some private flags. */ | |
450 | ||
e1dcbbca | 451 | |
26a32e18 | 452 | /* PVAV */ |
3f7ef1d4 | 453 | #define SVpav_REAL 0x40000000 /* free old entries */ |
26a32e18 | 454 | /* PVHV */ |
3f7ef1d4 | 455 | #define SVphv_LAZYDEL 0x40000000 /* entry in xhv_eiter must be deleted */ |
25da4f38 | 456 | |
26a32e18 | 457 | /* IV, PVIV, PVNV, PVMG, PVGV and (I assume) PVLV */ |
3f7ef1d4 | 458 | #define SVf_IVisUV 0x80000000 /* use XPVUV instead of XPVIV */ |
26a32e18 | 459 | /* PVAV */ |
3f7ef1d4 | 460 | #define SVpav_REIFY 0x80000000 /* can become real */ |
26a32e18 | 461 | /* PVHV */ |
3f7ef1d4 | 462 | #define SVphv_HASKFLAGS 0x80000000 /* keys have flag byte after hash */ |
26a32e18 | 463 | /* RV upwards. However, SVf_ROK and SVp_IOK are exclusive */ |
3f7ef1d4 | 464 | #define SVprv_WEAKREF 0x80000000 /* Weak reference */ |
d3ce79bd | 465 | /* pad name vars only */ |
810b8aa5 | 466 | |
6e128786 NC |
467 | #define _XPV_HEAD \ |
468 | HV* xmg_stash; /* class package */ \ | |
469 | union _xmgu xmg_u; \ | |
8de47657 | 470 | STRLEN xpv_cur; /* length of svu_pv as a C string */ \ |
8d919b0a FC |
471 | union { \ |
472 | STRLEN xpvlenu_len; /* allocated size */ \ | |
473 | char * xpvlenu_pv; /* regexp string */ \ | |
474 | } xpv_len_u | |
475 | ||
476 | #define xpv_len xpv_len_u.xpvlenu_len | |
bb02a38f | 477 | |
20f4945e MHM |
478 | union _xnvu { |
479 | NV xnv_nv; /* numeric value, if any */ | |
480 | HV * xgv_stash; | |
9420b268 | 481 | line_t xnv_lines; /* used internally by S_scan_subst() */ |
b4204fb6 | 482 | bool xnv_bm_tail; /* an SvVALID (BM) SV has an implicit "\n" */ |
20f4945e MHM |
483 | }; |
484 | ||
485 | union _xivu { | |
486 | IV xivu_iv; /* integer value */ | |
20f4945e | 487 | UV xivu_uv; |
20f4945e | 488 | HEK * xivu_namehek; /* xpvlv, xpvgv: GvNAME */ |
6432a58a | 489 | bool xivu_eval_seen; /* used internally by S_scan_subst() */ |
b4204fb6 | 490 | |
20f4945e MHM |
491 | }; |
492 | ||
493 | union _xmgu { | |
494 | MAGIC* xmg_magic; /* linked list of magicalness */ | |
5bec93be | 495 | STRLEN xmg_hash_index; /* used while freeing hash entries */ |
9b7476d7 | 496 | }; |
11ca45c0 | 497 | |
79072805 | 498 | struct xpv { |
20f4945e | 499 | _XPV_HEAD; |
79072805 LW |
500 | }; |
501 | ||
502 | struct xpviv { | |
20f4945e MHM |
503 | _XPV_HEAD; |
504 | union _xivu xiv_u; | |
79072805 LW |
505 | }; |
506 | ||
311a25d9 NC |
507 | #define xiv_iv xiv_u.xivu_iv |
508 | ||
ff68c719 | 509 | struct xpvuv { |
20f4945e MHM |
510 | _XPV_HEAD; |
511 | union _xivu xuv_u; | |
ff68c719 | 512 | }; |
513 | ||
20f4945e | 514 | #define xuv_uv xuv_u.xivu_uv |
311a25d9 | 515 | |
79072805 | 516 | struct xpvnv { |
20f4945e MHM |
517 | _XPV_HEAD; |
518 | union _xivu xiv_u; | |
6e128786 | 519 | union _xnvu xnv_u; |
79072805 LW |
520 | }; |
521 | ||
3cd3be43 | 522 | /* This structure must match the beginning of struct xpvhv in hv.h. */ |
79072805 | 523 | struct xpvmg { |
20f4945e | 524 | _XPV_HEAD; |
6e128786 NC |
525 | union _xivu xiv_u; |
526 | union _xnvu xnv_u; | |
79072805 LW |
527 | }; |
528 | ||
529 | struct xpvlv { | |
20f4945e | 530 | _XPV_HEAD; |
6e128786 NC |
531 | union _xivu xiv_u; |
532 | union _xnvu xnv_u; | |
bbfdc870 FC |
533 | union { |
534 | STRLEN xlvu_targoff; | |
535 | SSize_t xlvu_stargoff; | |
536 | } xlv_targoff_u; | |
79072805 LW |
537 | STRLEN xlv_targlen; |
538 | SV* xlv_targ; | |
dd28f7bb DM |
539 | char xlv_type; /* k=keys .=pos x=substr v=vec /=join/re |
540 | * y=alem/helem/iter t=tie T=tied HE */ | |
83f78d1a | 541 | char xlv_flags; /* 1 = negative offset 2 = negative len */ |
79072805 LW |
542 | }; |
543 | ||
bbfdc870 FC |
544 | #define xlv_targoff xlv_targoff_u.xlvu_targoff |
545 | ||
d361b004 KW |
546 | struct xpvinvlist { |
547 | _XPV_HEAD; | |
da62e549 KW |
548 | IV prev_index; /* caches result of previous invlist_search() */ |
549 | STRLEN iterator; /* Stores where we are in iterating */ | |
550 | bool is_offset; /* The data structure for all inversion lists | |
551 | begins with an element for code point U+0000. | |
552 | If this bool is set, the actual list contains | |
553 | that 0; otherwise, the list actually begins | |
554 | with the following element. Thus to invert | |
555 | the list, merely toggle this flag */ | |
d361b004 KW |
556 | }; |
557 | ||
a5c7cb08 DM |
558 | /* This structure works in 2 ways - regular scalar, or GV with GP */ |
559 | ||
79072805 | 560 | struct xpvgv { |
20f4945e | 561 | _XPV_HEAD; |
6e128786 NC |
562 | union _xivu xiv_u; |
563 | union _xnvu xnv_u; | |
79072805 LW |
564 | }; |
565 | ||
51c78f1b | 566 | typedef U32 cv_flags_t; |
77a005ab | 567 | |
20f4945e MHM |
568 | #define _XPVCV_COMMON \ |
569 | HV * xcv_stash; \ | |
570 | union { \ | |
571 | OP * xcv_start; \ | |
572 | ANY xcv_xsubany; \ | |
573 | } xcv_start_u; \ | |
574 | union { \ | |
575 | OP * xcv_root; \ | |
576 | void (*xcv_xsub) (pTHX_ CV*); \ | |
577 | } xcv_root_u; \ | |
b290562e FC |
578 | union { \ |
579 | GV * xcv_gv; \ | |
580 | HEK * xcv_hek; \ | |
581 | } xcv_gv_u; \ | |
20f4945e | 582 | char * xcv_file; \ |
eacbb379 DD |
583 | union { \ |
584 | PADLIST * xcv_padlist; \ | |
db6e00bd | 585 | void * xcv_hscxt; \ |
eacbb379 | 586 | } xcv_padlist_u; \ |
20f4945e MHM |
587 | CV * xcv_outside; \ |
588 | U32 xcv_outside_seq; /* the COP sequence (at the point of our \ | |
589 | * compilation) in the lexically enclosing \ | |
590 | * sub */ \ | |
8de47657 FC |
591 | cv_flags_t xcv_flags; \ |
592 | I32 xcv_depth /* >= 2 indicates recursive call */ | |
8990e307 | 593 | |
0d856a3a FC |
594 | /* This structure must match XPVCV in cv.h */ |
595 | ||
20f4945e MHM |
596 | struct xpvfm { |
597 | _XPV_HEAD; | |
20f4945e | 598 | _XPVCV_COMMON; |
79072805 LW |
599 | }; |
600 | ||
167f2c4d | 601 | |
8990e307 | 602 | struct xpvio { |
20f4945e | 603 | _XPV_HEAD; |
6e128786 | 604 | union _xivu xiv_u; |
6f7e8353 NC |
605 | /* ifp and ofp are normally the same, but sockets need separate streams */ |
606 | PerlIO * xio_ofp; | |
c951e2ad NC |
607 | /* Cray addresses everything by word boundaries (64 bits) and |
608 | * code and data pointers cannot be mixed (which is exactly what | |
609 | * Perl_filter_add() tries to do with the dirp), hence the | |
610 | * following union trick (as suggested by Gurusamy Sarathy). | |
611 | * For further information see Geir Johansen's problem report | |
4fe48737 | 612 | * titled [ID 20000612.002 (#3366)] Perl problem on Cray system |
c951e2ad NC |
613 | * The any pointer (known as IoANY()) will also be a good place |
614 | * to hang any IO disciplines to. | |
615 | */ | |
616 | union { | |
617 | DIR * xiou_dirp; /* for opendir, readdir, etc */ | |
618 | void * xiou_any; /* for alignment */ | |
619 | } xio_dirpu; | |
620 | /* IV xio_lines is now in IVX $. */ | |
621 | IV xio_page; /* $% */ | |
622 | IV xio_page_len; /* $= */ | |
623 | IV xio_lines_left; /* $- */ | |
624 | char * xio_top_name; /* $^ */ | |
625 | GV * xio_top_gv; /* $^ */ | |
626 | char * xio_fmt_name; /* $~ */ | |
627 | GV * xio_fmt_gv; /* $~ */ | |
628 | char * xio_bottom_name;/* $^B */ | |
629 | GV * xio_bottom_gv; /* $^B */ | |
630 | char xio_type; | |
631 | U8 xio_flags; | |
8990e307 | 632 | }; |
167f2c4d | 633 | |
4755096e GS |
634 | #define xio_dirp xio_dirpu.xiou_dirp |
635 | #define xio_any xio_dirpu.xiou_any | |
8990e307 | 636 | |
e0c19803 GS |
637 | #define IOf_ARGV 1 /* this fp iterates over ARGV */ |
638 | #define IOf_START 2 /* check for null ARGV and substitute '-' */ | |
639 | #define IOf_FLUSH 4 /* this fp wants a flush after write op */ | |
640 | #define IOf_DIDTOP 8 /* just did top of form */ | |
641 | #define IOf_UNTAINT 16 /* consider this fp (and its data) "safe" */ | |
642 | #define IOf_NOLINE 32 /* slurped a pseudo-line from empty file */ | |
5bb89d25 NC |
643 | #define IOf_FAKE_DIRP 64 /* xio_dirp is fake (source filters kludge) |
644 | Also, when this is set, SvPVX() is valid */ | |
8990e307 | 645 | |
ed6116ce LW |
646 | /* The following macros define implementation-independent predicates on SVs. */ |
647 | ||
954c1994 | 648 | /* |
fbf9f983 RGS |
649 | =for apidoc Am|U32|SvNIOK|SV* sv |
650 | Returns a U32 value indicating whether the SV contains a number, integer or | |
954c1994 GS |
651 | double. |
652 | ||
fbf9f983 RGS |
653 | =for apidoc Am|U32|SvNIOKp|SV* sv |
654 | Returns a U32 value indicating whether the SV contains a number, integer or | |
fe749c9a | 655 | double. Checks the B<private> setting. Use C<SvNIOK> instead. |
954c1994 GS |
656 | |
657 | =for apidoc Am|void|SvNIOK_off|SV* sv | |
658 | Unsets the NV/IV status of an SV. | |
659 | ||
fbf9f983 | 660 | =for apidoc Am|U32|SvOK|SV* sv |
72d33970 | 661 | Returns a U32 value indicating whether the value is defined. This is |
c0b6140e | 662 | only meaningful for scalars. |
954c1994 | 663 | |
fbf9f983 RGS |
664 | =for apidoc Am|U32|SvIOKp|SV* sv |
665 | Returns a U32 value indicating whether the SV contains an integer. Checks | |
fe749c9a | 666 | the B<private> setting. Use C<SvIOK> instead. |
954c1994 | 667 | |
fbf9f983 RGS |
668 | =for apidoc Am|U32|SvNOKp|SV* sv |
669 | Returns a U32 value indicating whether the SV contains a double. Checks the | |
fe749c9a | 670 | B<private> setting. Use C<SvNOK> instead. |
954c1994 | 671 | |
fbf9f983 RGS |
672 | =for apidoc Am|U32|SvPOKp|SV* sv |
673 | Returns a U32 value indicating whether the SV contains a character string. | |
fe749c9a | 674 | Checks the B<private> setting. Use C<SvPOK> instead. |
954c1994 | 675 | |
fbf9f983 RGS |
676 | =for apidoc Am|U32|SvIOK|SV* sv |
677 | Returns a U32 value indicating whether the SV contains an integer. | |
954c1994 GS |
678 | |
679 | =for apidoc Am|void|SvIOK_on|SV* sv | |
680 | Tells an SV that it is an integer. | |
681 | ||
682 | =for apidoc Am|void|SvIOK_off|SV* sv | |
683 | Unsets the IV status of an SV. | |
684 | ||
685 | =for apidoc Am|void|SvIOK_only|SV* sv | |
796b6530 | 686 | Tells an SV that it is an integer and disables all other C<OK> bits. |
954c1994 | 687 | |
e331fc52 | 688 | =for apidoc Am|void|SvIOK_only_UV|SV* sv |
796b6530 | 689 | Tells an SV that it is an unsigned integer and disables all other C<OK> bits. |
e331fc52 | 690 | |
12fa07df | 691 | =for apidoc Am|bool|SvIOK_UV|SV* sv |
a6ceea06 KW |
692 | Returns a boolean indicating whether the SV contains an integer that must be |
693 | interpreted as unsigned. A non-negative integer whose value is within the | |
796b6530 | 694 | range of both an IV and a UV may be be flagged as either C<SvUOK> or C<SVIOK>. |
e331fc52 | 695 | |
fbf9f983 | 696 | =for apidoc Am|bool|SvUOK|SV* sv |
a6ceea06 KW |
697 | Returns a boolean indicating whether the SV contains an integer that must be |
698 | interpreted as unsigned. A non-negative integer whose value is within the | |
796b6530 | 699 | range of both an IV and a UV may be be flagged as either C<SvUOK> or C<SVIOK>. |
28e5dec8 | 700 | |
12fa07df | 701 | =for apidoc Am|bool|SvIOK_notUV|SV* sv |
d1be9408 | 702 | Returns a boolean indicating whether the SV contains a signed integer. |
e331fc52 | 703 | |
fbf9f983 RGS |
704 | =for apidoc Am|U32|SvNOK|SV* sv |
705 | Returns a U32 value indicating whether the SV contains a double. | |
954c1994 GS |
706 | |
707 | =for apidoc Am|void|SvNOK_on|SV* sv | |
708 | Tells an SV that it is a double. | |
709 | ||
710 | =for apidoc Am|void|SvNOK_off|SV* sv | |
711 | Unsets the NV status of an SV. | |
712 | ||
713 | =for apidoc Am|void|SvNOK_only|SV* sv | |
714 | Tells an SV that it is a double and disables all other OK bits. | |
715 | ||
fbf9f983 RGS |
716 | =for apidoc Am|U32|SvPOK|SV* sv |
717 | Returns a U32 value indicating whether the SV contains a character | |
954c1994 GS |
718 | string. |
719 | ||
720 | =for apidoc Am|void|SvPOK_on|SV* sv | |
721 | Tells an SV that it is a string. | |
722 | ||
723 | =for apidoc Am|void|SvPOK_off|SV* sv | |
724 | Unsets the PV status of an SV. | |
725 | ||
726 | =for apidoc Am|void|SvPOK_only|SV* sv | |
796b6530 | 727 | Tells an SV that it is a string and disables all other C<OK> bits. |
1e54db1a | 728 | Will also turn off the UTF-8 status. |
954c1994 | 729 | |
b0f01acb JP |
730 | =for apidoc Am|bool|SvVOK|SV* sv |
731 | Returns a boolean indicating whether the SV contains a v-string. | |
732 | ||
fbf9f983 | 733 | =for apidoc Am|U32|SvOOK|SV* sv |
69240efd NC |
734 | Returns a U32 indicating whether the pointer to the string buffer is offset. |
735 | This hack is used internally to speed up removal of characters from the | |
796b6530 KW |
736 | beginning of a C<SvPV>. When C<SvOOK> is true, then the start of the |
737 | allocated string buffer is actually C<SvOOK_offset()> bytes before C<SvPVX>. | |
738 | This offset used to be stored in C<SvIVX>, but is now stored within the spare | |
69240efd | 739 | part of the buffer. |
954c1994 | 740 | |
fbf9f983 | 741 | =for apidoc Am|U32|SvROK|SV* sv |
954c1994 GS |
742 | Tests if the SV is an RV. |
743 | ||
744 | =for apidoc Am|void|SvROK_on|SV* sv | |
745 | Tells an SV that it is an RV. | |
746 | ||
747 | =for apidoc Am|void|SvROK_off|SV* sv | |
748 | Unsets the RV status of an SV. | |
749 | ||
750 | =for apidoc Am|SV*|SvRV|SV* sv | |
751 | Dereferences an RV to return the SV. | |
752 | ||
753 | =for apidoc Am|IV|SvIVX|SV* sv | |
645c22ef | 754 | Returns the raw value in the SV's IV slot, without checks or conversions. |
796b6530 | 755 | Only use when you are sure C<SvIOK> is true. See also C<L</SvIV>>. |
954c1994 GS |
756 | |
757 | =for apidoc Am|UV|SvUVX|SV* sv | |
645c22ef | 758 | Returns the raw value in the SV's UV slot, without checks or conversions. |
796b6530 | 759 | Only use when you are sure C<SvIOK> is true. See also C<L</SvUV>>. |
954c1994 GS |
760 | |
761 | =for apidoc Am|NV|SvNVX|SV* sv | |
645c22ef | 762 | Returns the raw value in the SV's NV slot, without checks or conversions. |
796b6530 | 763 | Only use when you are sure C<SvNOK> is true. See also C<L</SvNV>>. |
954c1994 GS |
764 | |
765 | =for apidoc Am|char*|SvPVX|SV* sv | |
645c22ef | 766 | Returns a pointer to the physical string in the SV. The SV must contain a |
72d33970 FC |
767 | string. Prior to 5.9.3 it is not safe |
768 | to execute this macro unless the SV's | |
796b6530 | 769 | type >= C<SVt_PV>. |
954c1994 | 770 | |
5b36e945 FC |
771 | This is also used to store the name of an autoloaded subroutine in an XS |
772 | AUTOLOAD routine. See L<perlguts/Autoloading with XSUBs>. | |
89fc9e2a | 773 | |
954c1994 | 774 | =for apidoc Am|STRLEN|SvCUR|SV* sv |
fbe13c60 | 775 | Returns the length of the string which is in the SV. See C<L</SvLEN>>. |
954c1994 GS |
776 | |
777 | =for apidoc Am|STRLEN|SvLEN|SV* sv | |
659239a4 | 778 | Returns the size of the string buffer in the SV, not including any part |
fbe13c60 | 779 | attributable to C<SvOOK>. See C<L</SvCUR>>. |
954c1994 GS |
780 | |
781 | =for apidoc Am|char*|SvEND|SV* sv | |
f990ea3e FC |
782 | Returns a pointer to the spot just after the last character in |
783 | the string which is in the SV, where there is usually a trailing | |
417b32ce | 784 | C<NUL> character (even though Perl scalars do not strictly require it). |
796b6530 | 785 | See C<L</SvCUR>>. Access the character as C<*(SvEND(sv))>. |
954c1994 | 786 | |
f990ea3e FC |
787 | Warning: If C<SvCUR> is equal to C<SvLEN>, then C<SvEND> points to |
788 | unallocated memory. | |
789 | ||
954c1994 GS |
790 | =for apidoc Am|HV*|SvSTASH|SV* sv |
791 | Returns the stash of the SV. | |
792 | ||
672994ce | 793 | =for apidoc Am|void|SvIV_set|SV* sv|IV val |
20799e15 SP |
794 | Set the value of the IV pointer in sv to val. It is possible to perform |
795 | the same function of this macro with an lvalue assignment to C<SvIVX>. | |
796 | With future Perls, however, it will be more efficient to use | |
797 | C<SvIV_set> instead of the lvalue assignment to C<SvIVX>. | |
672994ce SP |
798 | |
799 | =for apidoc Am|void|SvNV_set|SV* sv|NV val | |
796b6530 | 800 | Set the value of the NV pointer in C<sv> to val. See C<L</SvIV_set>>. |
672994ce SP |
801 | |
802 | =for apidoc Am|void|SvPV_set|SV* sv|char* val | |
f2979eac DD |
803 | This is probably not what you want to use, you probably wanted |
804 | L</sv_usepvn_flags> or L</sv_setpvn> or L</sv_setpvs>. | |
235fc044 | 805 | |
f2979eac | 806 | Set the value of the PV pointer in C<sv> to the Perl allocated |
fbe13c60 | 807 | C<NUL>-terminated string C<val>. See also C<L</SvIV_set>>. |
f2979eac DD |
808 | |
809 | Remember to free the previous PV buffer. There are many things to check. | |
235fc044 FC |
810 | Beware that the existing pointer may be involved in copy-on-write or other |
811 | mischief, so do C<SvOOK_off(sv)> and use C<sv_force_normal> or | |
796b6530 | 812 | C<SvPV_force> (or check the C<SvIsCOW> flag) first to make sure this |
f2979eac DD |
813 | modification is safe. Then finally, if it is not a COW, call C<SvPV_free> to |
814 | free the previous PV buffer. | |
672994ce SP |
815 | |
816 | =for apidoc Am|void|SvUV_set|SV* sv|UV val | |
796b6530 | 817 | Set the value of the UV pointer in C<sv> to val. See C<L</SvIV_set>>. |
672994ce SP |
818 | |
819 | =for apidoc Am|void|SvRV_set|SV* sv|SV* val | |
796b6530 | 820 | Set the value of the RV pointer in C<sv> to val. See C<L</SvIV_set>>. |
672994ce SP |
821 | |
822 | =for apidoc Am|void|SvMAGIC_set|SV* sv|MAGIC* val | |
796b6530 | 823 | Set the value of the MAGIC pointer in C<sv> to val. See C<L</SvIV_set>>. |
672994ce | 824 | |
b6f4de24 | 825 | =for apidoc Am|void|SvSTASH_set|SV* sv|HV* val |
796b6530 | 826 | Set the value of the STASH pointer in C<sv> to val. See C<L</SvIV_set>>. |
672994ce | 827 | |
954c1994 | 828 | =for apidoc Am|void|SvCUR_set|SV* sv|STRLEN len |
fbe13c60 KW |
829 | Set the current length of the string which is in the SV. See C<L</SvCUR>> |
830 | and C<SvIV_set>>. | |
672994ce SP |
831 | |
832 | =for apidoc Am|void|SvLEN_set|SV* sv|STRLEN len | |
0ff57aee | 833 | Set the size of the string buffer for the SV. See C<L</SvLEN>>. |
954c1994 GS |
834 | |
835 | =cut | |
836 | */ | |
837 | ||
79072805 | 838 | #define SvNIOK(sv) (SvFLAGS(sv) & (SVf_IOK|SVf_NOK)) |
748a9306 | 839 | #define SvNIOKp(sv) (SvFLAGS(sv) & (SVp_IOK|SVp_NOK)) |
a0d0e21e | 840 | #define SvNIOK_off(sv) (SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK| \ |
25da4f38 | 841 | SVp_IOK|SVp_NOK|SVf_IVisUV)) |
79072805 | 842 | |
c7724415 FC |
843 | #define assert_not_ROK(sv) assert_(!SvROK(sv) || !SvRV(sv)) |
844 | #define assert_not_glob(sv) assert_(!isGV_with_GP(sv)) | |
906ed6d6 | 845 | |
3f2ee99a | 846 | #define SvOK(sv) (SvFLAGS(sv) & SVf_OK || isREGEXP(sv)) |
f7877b28 | 847 | #define SvOK_off(sv) (assert_not_ROK(sv) assert_not_glob(sv) \ |
dd2eae66 | 848 | SvFLAGS(sv) &= ~(SVf_OK| \ |
d41ff1b8 | 849 | SVf_IVisUV|SVf_UTF8), \ |
25da4f38 | 850 | SvOOK_off(sv)) |
54866b45 | 851 | #define SvOK_off_exc_UV(sv) (assert_not_ROK(sv) \ |
dd2eae66 | 852 | SvFLAGS(sv) &= ~(SVf_OK| \ |
d41ff1b8 | 853 | SVf_UTF8), \ |
a0d0e21e | 854 | SvOOK_off(sv)) |
79072805 | 855 | |
8990e307 LW |
856 | #define SvOKp(sv) (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) |
857 | #define SvIOKp(sv) (SvFLAGS(sv) & SVp_IOK) | |
b326ddff | 858 | #define SvIOKp_on(sv) (assert_not_glob(sv) \ |
765f542d | 859 | SvFLAGS(sv) |= SVp_IOK) |
8990e307 | 860 | #define SvNOKp(sv) (SvFLAGS(sv) & SVp_NOK) |
f7877b28 | 861 | #define SvNOKp_on(sv) (assert_not_glob(sv) SvFLAGS(sv) |= SVp_NOK) |
8990e307 | 862 | #define SvPOKp(sv) (SvFLAGS(sv) & SVp_POK) |
f7877b28 | 863 | #define SvPOKp_on(sv) (assert_not_ROK(sv) assert_not_glob(sv) \ |
906ed6d6 | 864 | SvFLAGS(sv) |= SVp_POK) |
463ee0b2 | 865 | |
79072805 | 866 | #define SvIOK(sv) (SvFLAGS(sv) & SVf_IOK) |
b326ddff | 867 | #define SvIOK_on(sv) (assert_not_glob(sv) \ |
765f542d | 868 | SvFLAGS(sv) |= (SVf_IOK|SVp_IOK)) |
25da4f38 | 869 | #define SvIOK_off(sv) (SvFLAGS(sv) &= ~(SVf_IOK|SVp_IOK|SVf_IVisUV)) |
0c34ef67 | 870 | #define SvIOK_only(sv) (SvOK_off(sv), \ |
a0d0e21e | 871 | SvFLAGS(sv) |= (SVf_IOK|SVp_IOK)) |
f7877b28 | 872 | #define SvIOK_only_UV(sv) (assert_not_glob(sv) SvOK_off_exc_UV(sv), \ |
25da4f38 | 873 | SvFLAGS(sv) |= (SVf_IOK|SVp_IOK)) |
70401c6b | 874 | |
25da4f38 IZ |
875 | #define SvIOK_UV(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV)) \ |
876 | == (SVf_IOK|SVf_IVisUV)) | |
28e5dec8 | 877 | #define SvUOK(sv) SvIOK_UV(sv) |
25da4f38 IZ |
878 | #define SvIOK_notUV(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV)) \ |
879 | == SVf_IOK) | |
880 | ||
881 | #define SvIsUV(sv) (SvFLAGS(sv) & SVf_IVisUV) | |
882 | #define SvIsUV_on(sv) (SvFLAGS(sv) |= SVf_IVisUV) | |
883 | #define SvIsUV_off(sv) (SvFLAGS(sv) &= ~SVf_IVisUV) | |
79072805 LW |
884 | |
885 | #define SvNOK(sv) (SvFLAGS(sv) & SVf_NOK) | |
f7877b28 NC |
886 | #define SvNOK_on(sv) (assert_not_glob(sv) \ |
887 | SvFLAGS(sv) |= (SVf_NOK|SVp_NOK)) | |
8990e307 | 888 | #define SvNOK_off(sv) (SvFLAGS(sv) &= ~(SVf_NOK|SVp_NOK)) |
0c34ef67 | 889 | #define SvNOK_only(sv) (SvOK_off(sv), \ |
a0d0e21e | 890 | SvFLAGS(sv) |= (SVf_NOK|SVp_NOK)) |
79072805 | 891 | |
914184e1 | 892 | /* |
fbf9f983 | 893 | =for apidoc Am|U32|SvUTF8|SV* sv |
3c813ed0 KW |
894 | Returns a U32 value indicating the UTF-8 status of an SV. If things are set-up |
895 | properly, this indicates whether or not the SV contains UTF-8 encoded data. | |
796b6530 | 896 | You should use this I<after> a call to C<SvPV()> or one of its variants, in |
fd142383 | 897 | case any call to string overloading updates the internal flag. |
914184e1 | 898 | |
119bc988 KW |
899 | If you want to take into account the L<bytes> pragma, use C<L</DO_UTF8>> |
900 | instead. | |
901 | ||
914184e1 | 902 | =for apidoc Am|void|SvUTF8_on|SV *sv |
1e54db1a | 903 | Turn on the UTF-8 status of an SV (the data is not changed, just the flag). |
d5ce4a7c | 904 | Do not use frivolously. |
914184e1 JH |
905 | |
906 | =for apidoc Am|void|SvUTF8_off|SV *sv | |
3c813ed0 KW |
907 | Unsets the UTF-8 status of an SV (the data is not changed, just the flag). |
908 | Do not use frivolously. | |
914184e1 JH |
909 | |
910 | =for apidoc Am|void|SvPOK_only_UTF8|SV* sv | |
796b6530 | 911 | Tells an SV that it is a string and disables all other C<OK> bits, |
1e54db1a | 912 | and leaves the UTF-8 status as it was. |
f1a1024e | 913 | |
914184e1 JH |
914 | =cut |
915 | */ | |
916 | ||
7a5fd60d NC |
917 | /* Ensure the return value of this macro does not clash with the GV_ADD* flags |
918 | in gv.h: */ | |
a7cb1f99 GS |
919 | #define SvUTF8(sv) (SvFLAGS(sv) & SVf_UTF8) |
920 | #define SvUTF8_on(sv) (SvFLAGS(sv) |= (SVf_UTF8)) | |
921 | #define SvUTF8_off(sv) (SvFLAGS(sv) &= ~(SVf_UTF8)) | |
5bc28da9 | 922 | |
79072805 | 923 | #define SvPOK(sv) (SvFLAGS(sv) & SVf_POK) |
f7877b28 | 924 | #define SvPOK_on(sv) (assert_not_ROK(sv) assert_not_glob(sv) \ |
906ed6d6 | 925 | SvFLAGS(sv) |= (SVf_POK|SVp_POK)) |
8990e307 | 926 | #define SvPOK_off(sv) (SvFLAGS(sv) &= ~(SVf_POK|SVp_POK)) |
f7877b28 | 927 | #define SvPOK_only(sv) (assert_not_ROK(sv) assert_not_glob(sv) \ |
dd2eae66 | 928 | SvFLAGS(sv) &= ~(SVf_OK| \ |
d41ff1b8 GS |
929 | SVf_IVisUV|SVf_UTF8), \ |
930 | SvFLAGS(sv) |= (SVf_POK|SVp_POK)) | |
f7877b28 | 931 | #define SvPOK_only_UTF8(sv) (assert_not_ROK(sv) assert_not_glob(sv) \ |
dd2eae66 | 932 | SvFLAGS(sv) &= ~(SVf_OK| \ |
d41ff1b8 | 933 | SVf_IVisUV), \ |
a0d0e21e | 934 | SvFLAGS(sv) |= (SVf_POK|SVp_POK)) |
79072805 | 935 | |
4f2da183 | 936 | #define SvVOK(sv) (SvMAGICAL(sv) \ |
b0a11fe1 RGS |
937 | && mg_find(sv,PERL_MAGIC_vstring)) |
938 | /* returns the vstring magic, if any */ | |
939 | #define SvVSTRING_mg(sv) (SvMAGICAL(sv) \ | |
4f2da183 | 940 | ? mg_find(sv,PERL_MAGIC_vstring) : NULL) |
b0a11fe1 | 941 | |
79072805 | 942 | #define SvOOK(sv) (SvFLAGS(sv) & SVf_OOK) |
a4f658f7 | 943 | #define SvOOK_on(sv) (SvFLAGS(sv) |= SVf_OOK) |
fa7a1e49 | 944 | #define SvOOK_off(sv) ((void)(SvOOK(sv) && (sv_backoff(sv),0))) |
79072805 | 945 | |
a0d0e21e LW |
946 | #define SvFAKE(sv) (SvFLAGS(sv) & SVf_FAKE) |
947 | #define SvFAKE_on(sv) (SvFLAGS(sv) |= SVf_FAKE) | |
948 | #define SvFAKE_off(sv) (SvFLAGS(sv) &= ~SVf_FAKE) | |
949 | ||
ed6116ce | 950 | #define SvROK(sv) (SvFLAGS(sv) & SVf_ROK) |
a0d0e21e | 951 | #define SvROK_on(sv) (SvFLAGS(sv) |= SVf_ROK) |
dd2eae66 | 952 | #define SvROK_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK)) |
79072805 | 953 | |
8990e307 LW |
954 | #define SvMAGICAL(sv) (SvFLAGS(sv) & (SVs_GMG|SVs_SMG|SVs_RMG)) |
955 | #define SvMAGICAL_on(sv) (SvFLAGS(sv) |= (SVs_GMG|SVs_SMG|SVs_RMG)) | |
956 | #define SvMAGICAL_off(sv) (SvFLAGS(sv) &= ~(SVs_GMG|SVs_SMG|SVs_RMG)) | |
79072805 | 957 | |
8990e307 LW |
958 | #define SvGMAGICAL(sv) (SvFLAGS(sv) & SVs_GMG) |
959 | #define SvGMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_GMG) | |
960 | #define SvGMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_GMG) | |
ed6116ce | 961 | |
8990e307 LW |
962 | #define SvSMAGICAL(sv) (SvFLAGS(sv) & SVs_SMG) |
963 | #define SvSMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_SMG) | |
964 | #define SvSMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_SMG) | |
ed6116ce | 965 | |
8990e307 LW |
966 | #define SvRMAGICAL(sv) (SvFLAGS(sv) & SVs_RMG) |
967 | #define SvRMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_RMG) | |
968 | #define SvRMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_RMG) | |
ed6116ce | 969 | |
a1cd65be | 970 | #define SvAMAGIC(sv) (SvROK(sv) && SvOBJECT(SvRV(sv)) && \ |
54c554f3 | 971 | HvAMAGIC(SvSTASH(SvRV(sv)))) |
a0d0e21e | 972 | |
0adc25b0 FC |
973 | /* To be used on the stashes themselves: */ |
974 | #define HvAMAGIC(hv) (SvFLAGS(hv) & SVf_AMAGIC) | |
975 | #define HvAMAGIC_on(hv) (SvFLAGS(hv) |= SVf_AMAGIC) | |
976 | #define HvAMAGIC_off(hv) (SvFLAGS(hv) &=~ SVf_AMAGIC) | |
977 | ||
4bac9ae4 | 978 | |
1078c6a2 | 979 | /* "nog" means "doesn't have get magic" */ |
4bac9ae4 CS |
980 | #define SvPOK_nog(sv) ((SvFLAGS(sv) & (SVf_POK|SVs_GMG)) == SVf_POK) |
981 | #define SvIOK_nog(sv) ((SvFLAGS(sv) & (SVf_IOK|SVs_GMG)) == SVf_IOK) | |
982 | #define SvUOK_nog(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV|SVs_GMG)) == (SVf_IOK|SVf_IVisUV)) | |
983 | #define SvNOK_nog(sv) ((SvFLAGS(sv) & (SVf_NOK|SVs_GMG)) == SVf_NOK) | |
984 | #define SvNIOK_nog(sv) (SvNIOK(sv) && !(SvFLAGS(sv) & SVs_GMG)) | |
985 | ||
986 | #define SvPOK_nogthink(sv) ((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST|SVs_GMG)) == SVf_POK) | |
987 | #define SvIOK_nogthink(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_THINKFIRST|SVs_GMG)) == SVf_IOK) | |
988 | #define SvUOK_nogthink(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV|SVf_THINKFIRST|SVs_GMG)) == (SVf_IOK|SVf_IVisUV)) | |
989 | #define SvNOK_nogthink(sv) ((SvFLAGS(sv) & (SVf_NOK|SVf_THINKFIRST|SVs_GMG)) == SVf_NOK) | |
990 | #define SvNIOK_nogthink(sv) (SvNIOK(sv) && !(SvFLAGS(sv) & (SVf_THINKFIRST|SVs_GMG))) | |
991 | ||
992 | #define SvPOK_utf8_nog(sv) ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVs_GMG)) == (SVf_POK|SVf_UTF8)) | |
993 | #define SvPOK_utf8_nogthink(sv) ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVf_THINKFIRST|SVs_GMG)) == (SVf_POK|SVf_UTF8)) | |
994 | ||
995 | #define SvPOK_byte_nog(sv) ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVs_GMG)) == SVf_POK) | |
996 | #define SvPOK_byte_nogthink(sv) ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVf_THINKFIRST|SVs_GMG)) == SVf_POK) | |
997 | ||
8bb025ae CS |
998 | #define SvPOK_pure_nogthink(sv) \ |
999 | ((SvFLAGS(sv) & (SVf_POK|SVf_IOK|SVf_NOK|SVf_ROK|SVpgv_GP|SVf_THINKFIRST|SVs_GMG)) == SVf_POK) | |
1000 | #define SvPOK_utf8_pure_nogthink(sv) \ | |
1001 | ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVf_IOK|SVf_NOK|SVf_ROK|SVpgv_GP|SVf_THINKFIRST|SVs_GMG)) == (SVf_POK|SVf_UTF8)) | |
1002 | #define SvPOK_byte_pure_nogthink(sv) \ | |
1003 | ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVf_IOK|SVf_NOK|SVf_ROK|SVpgv_GP|SVf_THINKFIRST|SVs_GMG)) == SVf_POK) | |
1004 | ||
d34786ba | 1005 | /* |
458b44e7 | 1006 | =for apidoc Am|U32|SvGAMAGIC|SV* sv |
d34786ba | 1007 | |
8554e7a0 FC |
1008 | Returns true if the SV has get magic or |
1009 | overloading. If either is true then | |
d34786ba | 1010 | the scalar is active data, and has the potential to return a new value every |
8554e7a0 FC |
1011 | time it is accessed. Hence you must be careful to |
1012 | only read it once per user logical operation and work | |
1013 | with that returned value. If neither is true then | |
d34786ba NC |
1014 | the scalar's value cannot change unless written to. |
1015 | ||
1016 | =cut | |
1017 | */ | |
1018 | ||
dd2eae66 | 1019 | #define SvGAMAGIC(sv) (SvGMAGICAL(sv) || SvAMAGIC(sv)) |
1426bbf4 | 1020 | |
9299023c | 1021 | #define Gv_AMG(stash) \ |
d3c7a87b FC |
1022 | (HvNAME(stash) && Gv_AMupdate(stash,FALSE) \ |
1023 | ? 1 \ | |
1024 | : (HvAMAGIC_off(stash), 0)) | |
a0d0e21e | 1025 | |
810b8aa5 GS |
1026 | #define SvWEAKREF(sv) ((SvFLAGS(sv) & (SVf_ROK|SVprv_WEAKREF)) \ |
1027 | == (SVf_ROK|SVprv_WEAKREF)) | |
1028 | #define SvWEAKREF_on(sv) (SvFLAGS(sv) |= (SVf_ROK|SVprv_WEAKREF)) | |
1029 | #define SvWEAKREF_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK|SVprv_WEAKREF)) | |
1030 | ||
1ccdb730 NC |
1031 | #define SvPCS_IMPORTED(sv) ((SvFLAGS(sv) & (SVf_ROK|SVprv_PCS_IMPORTED)) \ |
1032 | == (SVf_ROK|SVprv_PCS_IMPORTED)) | |
1033 | #define SvPCS_IMPORTED_on(sv) (SvFLAGS(sv) |= (SVf_ROK|SVprv_PCS_IMPORTED)) | |
1034 | #define SvPCS_IMPORTED_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK|SVprv_PCS_IMPORTED)) | |
1035 | ||
a11eaecb FC |
1036 | /* |
1037 | =for apidoc m|U32|SvTHINKFIRST|SV *sv | |
1038 | ||
796b6530 KW |
1039 | A quick flag check to see whether an C<sv> should be passed to C<sv_force_normal> |
1040 | to be "downgraded" before C<SvIVX> or C<SvPVX> can be modified directly. | |
a11eaecb | 1041 | |
796b6530 KW |
1042 | For example, if your scalar is a reference and you want to modify the C<SvIVX> |
1043 | slot, you can't just do C<SvROK_off>, as that will leak the referent. | |
a11eaecb FC |
1044 | |
1045 | This is used internally by various sv-modifying functions, such as | |
ef058b33 | 1046 | C<sv_setsv>, C<sv_setiv> and C<sv_pvn_force>. |
a11eaecb FC |
1047 | |
1048 | One case that this does not handle is a gv without SvFAKE set. After | |
1049 | ||
1050 | if (SvTHINKFIRST(gv)) sv_force_normal(gv); | |
1051 | ||
1052 | it will still be a gv. | |
1053 | ||
796b6530 KW |
1054 | C<SvTHINKFIRST> sometimes produces false positives. In those cases |
1055 | C<sv_force_normal> does nothing. | |
a11eaecb FC |
1056 | |
1057 | =cut | |
1058 | */ | |
1059 | ||
a0d0e21e | 1060 | #define SvTHINKFIRST(sv) (SvFLAGS(sv) & SVf_THINKFIRST) |
ed6116ce | 1061 | |
c0683843 FC |
1062 | #define SVs_PADMY 0 |
1063 | #define SvPADMY(sv) !(SvFLAGS(sv) & SVs_PADTMP) | |
145bf8ee FC |
1064 | #ifndef PERL_CORE |
1065 | # define SvPADMY_on(sv) SvPADTMP_off(sv) | |
1066 | #endif | |
d9d18af6 | 1067 | |
c0683843 FC |
1068 | #define SvPADTMP(sv) (SvFLAGS(sv) & (SVs_PADTMP)) |
1069 | #define SvPADSTALE(sv) (SvFLAGS(sv) & (SVs_PADSTALE)) | |
62bb6514 | 1070 | |
145bf8ee FC |
1071 | #define SvPADTMP_on(sv) (SvFLAGS(sv) |= SVs_PADTMP) |
1072 | #define SvPADTMP_off(sv) (SvFLAGS(sv) &= ~SVs_PADTMP) | |
541377b1 FC |
1073 | #define SvPADSTALE_on(sv) S_SvPADSTALE_on(MUTABLE_SV(sv)) |
1074 | #define SvPADSTALE_off(sv) S_SvPADSTALE_off(MUTABLE_SV(sv)) | |
ed6116ce | 1075 | |
8990e307 LW |
1076 | #define SvTEMP(sv) (SvFLAGS(sv) & SVs_TEMP) |
1077 | #define SvTEMP_on(sv) (SvFLAGS(sv) |= SVs_TEMP) | |
1078 | #define SvTEMP_off(sv) (SvFLAGS(sv) &= ~SVs_TEMP) | |
79072805 | 1079 | |
8990e307 LW |
1080 | #define SvOBJECT(sv) (SvFLAGS(sv) & SVs_OBJECT) |
1081 | #define SvOBJECT_on(sv) (SvFLAGS(sv) |= SVs_OBJECT) | |
1082 | #define SvOBJECT_off(sv) (SvFLAGS(sv) &= ~SVs_OBJECT) | |
79072805 | 1083 | |
cb198164 YO |
1084 | /* |
1085 | =for apidoc Am|U32|SvREADONLY|SV* sv | |
1086 | Returns true if the argument is readonly, otherwise returns false. | |
1087 | Exposed to to perl code via Internals::SvREADONLY(). | |
1088 | ||
1089 | =for apidoc Am|U32|SvREADONLY_on|SV* sv | |
1090 | Mark an object as readonly. Exactly what this means depends on the object | |
1091 | type. Exposed to perl code via Internals::SvREADONLY(). | |
1092 | ||
1093 | =for apidoc Am|U32|SvREADONLY_off|SV* sv | |
1094 | Mark an object as not-readonly. Exactly what this mean depends on the | |
1095 | object type. Exposed to perl code via Internals::SvREADONLY(). | |
1096 | ||
1097 | =cut | |
1098 | */ | |
1099 | ||
a623f893 FC |
1100 | #define SvREADONLY(sv) (SvFLAGS(sv) & (SVf_READONLY|SVf_PROTECT)) |
1101 | #ifdef PERL_CORE | |
1102 | # define SvREADONLY_on(sv) (SvFLAGS(sv) |= (SVf_READONLY|SVf_PROTECT)) | |
1103 | # define SvREADONLY_off(sv) (SvFLAGS(sv) &=~(SVf_READONLY|SVf_PROTECT)) | |
1104 | #else | |
1105 | # define SvREADONLY_on(sv) (SvFLAGS(sv) |= SVf_READONLY) | |
1106 | # define SvREADONLY_off(sv) (SvFLAGS(sv) &= ~SVf_READONLY) | |
1107 | #endif | |
79072805 | 1108 | |
180488f8 | 1109 | #define SvSCREAM(sv) ((SvFLAGS(sv) & (SVp_SCREAM|SVp_POK)) == (SVp_SCREAM|SVp_POK)) |
8990e307 LW |
1110 | #define SvSCREAM_on(sv) (SvFLAGS(sv) |= SVp_SCREAM) |
1111 | #define SvSCREAM_off(sv) (SvFLAGS(sv) &= ~SVp_SCREAM) | |
79072805 | 1112 | |
74e0ddf7 NC |
1113 | #ifndef PERL_CORE |
1114 | # define SvCOMPILED(sv) 0 | |
1115 | # define SvCOMPILED_on(sv) | |
1116 | # define SvCOMPILED_off(sv) | |
1117 | #endif | |
79072805 | 1118 | |
85ffbbb0 | 1119 | |
a5c7cb08 | 1120 | #if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) |
e9726144 | 1121 | # define SvTAIL(sv) ({ const SV *const _svtail = (const SV *)(sv); \ |
654c0d3f RU |
1122 | assert(SvTYPE(_svtail) != SVt_PVAV); \ |
1123 | assert(SvTYPE(_svtail) != SVt_PVHV); \ | |
b4204fb6 | 1124 | assert(!(SvFLAGS(_svtail) & (SVf_NOK|SVp_NOK))); \ |
a5c7cb08 | 1125 | assert(SvVALID(_svtail)); \ |
b4204fb6 | 1126 | ((XPVNV*)SvANY(_svtail))->xnv_u.xnv_bm_tail; \ |
85efc3a5 NC |
1127 | }) |
1128 | #else | |
b4204fb6 | 1129 | # define SvTAIL(_svtail) (((XPVNV*)SvANY(_svtail))->xnv_u.xnv_bm_tail) |
85efc3a5 | 1130 | #endif |
8990e307 | 1131 | |
a5c7cb08 DM |
1132 | /* Does the SV have a Boyer-Moore table attached as magic? |
1133 | * 'VALID' is a poor name, but is kept for historical reasons. */ | |
1134 | #define SvVALID(_svvalid) ( \ | |
4e8879f3 DM |
1135 | SvPOKp(_svvalid) \ |
1136 | && SvSMAGICAL(_svvalid) \ | |
a5c7cb08 DM |
1137 | && SvMAGIC(_svvalid) \ |
1138 | && (SvMAGIC(_svvalid)->mg_type == PERL_MAGIC_bm \ | |
1139 | || mg_find(_svvalid, PERL_MAGIC_bm)) \ | |
1140 | ) | |
1141 | ||
ed6116ce LW |
1142 | #define SvRVx(sv) SvRV(sv) |
1143 | ||
f599b64b | 1144 | #ifdef PERL_DEBUG_COW |
8ed30cc1 DD |
1145 | /* Need -0.0 for SvNVX to preserve IEEE FP "negative zero" because |
1146 | +0.0 + -0.0 => +0.0 but -0.0 + -0.0 => -0.0 */ | |
771ba71a NC |
1147 | # define SvIVX(sv) (0 + ((XPVIV*) SvANY(sv))->xiv_iv) |
1148 | # define SvUVX(sv) (0 + ((XPVUV*) SvANY(sv))->xuv_uv) | |
58430790 | 1149 | # define SvNVX(sv) (-0.0 + ((XPVNV*) SvANY(sv))->xnv_u.xnv_nv) |
ac09da3b | 1150 | # define SvRV(sv) (0 + (sv)->sv_u.svu_rv) |
f19a12a3 | 1151 | # define SvRV_const(sv) (0 + (sv)->sv_u.svu_rv) |
c0e1089a | 1152 | /* Don't test the core XS code yet. */ |
771ba71a | 1153 | # if defined (PERL_CORE) && PERL_DEBUG_COW > 1 |
c7724415 | 1154 | # define SvPVX(sv) (0 + (assert_(!SvREADONLY(sv)) (sv)->sv_u.svu_pv)) |
771ba71a NC |
1155 | # else |
1156 | # define SvPVX(sv) SvPVX_mutable(sv) | |
1157 | # endif | |
771ba71a NC |
1158 | # define SvCUR(sv) (0 + ((XPV*) SvANY(sv))->xpv_cur) |
1159 | # define SvLEN(sv) (0 + ((XPV*) SvANY(sv))->xpv_len) | |
1160 | # define SvEND(sv) ((sv)->sv_u.svu_pv + ((XPV*)SvANY(sv))->xpv_cur) | |
1161 | ||
c7724415 FC |
1162 | # define SvMAGIC(sv) (0 + *(assert_(SvTYPE(sv) >= SVt_PVMG) &((XPVMG*) SvANY(sv))->xmg_u.xmg_magic)) |
1163 | # define SvSTASH(sv) (0 + *(assert_(SvTYPE(sv) >= SVt_PVMG) &((XPVMG*) SvANY(sv))->xmg_stash)) | |
f599b64b | 1164 | #else |
771ba71a NC |
1165 | # define SvLEN(sv) ((XPV*) SvANY(sv))->xpv_len |
1166 | # define SvEND(sv) ((sv)->sv_u.svu_pv + ((XPV*)SvANY(sv))->xpv_cur) | |
1167 | ||
05ef5f8f NC |
1168 | # if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) |
1169 | /* These get expanded inside other macros that already use a variable _sv */ | |
f7877b28 | 1170 | # define SvPVX(sv) \ |
d2c6dc5e | 1171 | (*({ SV *const _svpvx = MUTABLE_SV(sv); \ |
f1fb8741 | 1172 | assert(PL_valid_types_PVX[SvTYPE(_svpvx) & SVt_MASK]); \ |
e5ae200f | 1173 | assert(!isGV_with_GP(_svpvx)); \ |
5bb89d25 NC |
1174 | assert(!(SvTYPE(_svpvx) == SVt_PVIO \ |
1175 | && !(IoFLAGS(_svpvx) & IOf_FAKE_DIRP))); \ | |
e5ae200f | 1176 | &((_svpvx)->sv_u.svu_pv); \ |
f7877b28 | 1177 | })) |
08002bbf | 1178 | # define SvCUR(sv) \ |
b1bc3f34 | 1179 | (*({ const SV *const _svcur = (const SV *)(sv); \ |
8d919b0a FC |
1180 | assert(PL_valid_types_PVX[SvTYPE(_svcur) & SVt_MASK] \ |
1181 | || SvTYPE(_svcur) == SVt_REGEXP); \ | |
e5ae200f | 1182 | assert(!isGV_with_GP(_svcur)); \ |
6f7e8353 NC |
1183 | assert(!(SvTYPE(_svcur) == SVt_PVIO \ |
1184 | && !(IoFLAGS(_svcur) & IOf_FAKE_DIRP))); \ | |
b1bc3f34 | 1185 | &(((XPV*) MUTABLE_PTR(SvANY(_svcur)))->xpv_cur); \ |
08002bbf | 1186 | })) |
05ef5f8f | 1187 | # define SvIVX(sv) \ |
b1bc3f34 | 1188 | (*({ const SV *const _svivx = (const SV *)(sv); \ |
f1fb8741 | 1189 | assert(PL_valid_types_IVX[SvTYPE(_svivx) & SVt_MASK]); \ |
e5ae200f | 1190 | assert(!isGV_with_GP(_svivx)); \ |
b1bc3f34 | 1191 | &(((XPVIV*) MUTABLE_PTR(SvANY(_svivx)))->xiv_iv); \ |
05ef5f8f NC |
1192 | })) |
1193 | # define SvUVX(sv) \ | |
b1bc3f34 | 1194 | (*({ const SV *const _svuvx = (const SV *)(sv); \ |
f1fb8741 | 1195 | assert(PL_valid_types_IVX[SvTYPE(_svuvx) & SVt_MASK]); \ |
e5ae200f | 1196 | assert(!isGV_with_GP(_svuvx)); \ |
b1bc3f34 | 1197 | &(((XPVUV*) MUTABLE_PTR(SvANY(_svuvx)))->xuv_uv); \ |
05ef5f8f NC |
1198 | })) |
1199 | # define SvNVX(sv) \ | |
b1bc3f34 | 1200 | (*({ const SV *const _svnvx = (const SV *)(sv); \ |
f1fb8741 | 1201 | assert(PL_valid_types_NVX[SvTYPE(_svnvx) & SVt_MASK]); \ |
e5ae200f | 1202 | assert(!isGV_with_GP(_svnvx)); \ |
b1bc3f34 | 1203 | &(((XPVNV*) MUTABLE_PTR(SvANY(_svnvx)))->xnv_u.xnv_nv); \ |
05ef5f8f | 1204 | })) |
ac09da3b | 1205 | # define SvRV(sv) \ |
f19a12a3 | 1206 | (*({ SV *const _svrv = MUTABLE_SV(sv); \ |
f1fb8741 | 1207 | assert(PL_valid_types_RV[SvTYPE(_svrv) & SVt_MASK]); \ |
e5ae200f | 1208 | assert(!isGV_with_GP(_svrv)); \ |
6f7e8353 NC |
1209 | assert(!(SvTYPE(_svrv) == SVt_PVIO \ |
1210 | && !(IoFLAGS(_svrv) & IOf_FAKE_DIRP))); \ | |
e5ae200f | 1211 | &((_svrv)->sv_u.svu_rv); \ |
ac09da3b | 1212 | })) |
f19a12a3 MHM |
1213 | # define SvRV_const(sv) \ |
1214 | ({ const SV *const _svrv = (const SV *)(sv); \ | |
f1fb8741 | 1215 | assert(PL_valid_types_RV[SvTYPE(_svrv) & SVt_MASK]); \ |
f19a12a3 | 1216 | assert(!isGV_with_GP(_svrv)); \ |
6f7e8353 NC |
1217 | assert(!(SvTYPE(_svrv) == SVt_PVIO \ |
1218 | && !(IoFLAGS(_svrv) & IOf_FAKE_DIRP))); \ | |
f19a12a3 MHM |
1219 | (_svrv)->sv_u.svu_rv; \ |
1220 | }) | |
05ef5f8f | 1221 | # define SvMAGIC(sv) \ |
b1bc3f34 | 1222 | (*({ const SV *const _svmagic = (const SV *)(sv); \ |
e5ae200f | 1223 | assert(SvTYPE(_svmagic) >= SVt_PVMG); \ |
b1bc3f34 | 1224 | &(((XPVMG*) MUTABLE_PTR(SvANY(_svmagic)))->xmg_u.xmg_magic); \ |
05ef5f8f NC |
1225 | })) |
1226 | # define SvSTASH(sv) \ | |
b1bc3f34 | 1227 | (*({ const SV *const _svstash = (const SV *)(sv); \ |
e5ae200f | 1228 | assert(SvTYPE(_svstash) >= SVt_PVMG); \ |
b1bc3f34 | 1229 | &(((XPVMG*) MUTABLE_PTR(SvANY(_svstash)))->xmg_stash); \ |
05ef5f8f | 1230 | })) |
03687789 | 1231 | # else |
08002bbf NC |
1232 | # define SvPVX(sv) ((sv)->sv_u.svu_pv) |
1233 | # define SvCUR(sv) ((XPV*) SvANY(sv))->xpv_cur | |
05ef5f8f NC |
1234 | # define SvIVX(sv) ((XPVIV*) SvANY(sv))->xiv_iv |
1235 | # define SvUVX(sv) ((XPVUV*) SvANY(sv))->xuv_uv | |
58430790 | 1236 | # define SvNVX(sv) ((XPVNV*) SvANY(sv))->xnv_u.xnv_nv |
ac09da3b | 1237 | # define SvRV(sv) ((sv)->sv_u.svu_rv) |
f19a12a3 | 1238 | # define SvRV_const(sv) (0 + (sv)->sv_u.svu_rv) |
e736a858 | 1239 | # define SvMAGIC(sv) ((XPVMG*) SvANY(sv))->xmg_u.xmg_magic |
771ba71a | 1240 | # define SvSTASH(sv) ((XPVMG*) SvANY(sv))->xmg_stash |
03687789 | 1241 | # endif |
62703e72 NC |
1242 | #endif |
1243 | ||
06c0cc96 | 1244 | #ifndef PERL_POISON |
bb496845 SP |
1245 | /* Given that these two are new, there can't be any existing code using them |
1246 | * as LVALUEs */ | |
06c0cc96 NC |
1247 | # define SvPVX_mutable(sv) (0 + (sv)->sv_u.svu_pv) |
1248 | # define SvPVX_const(sv) ((const char*)(0 + (sv)->sv_u.svu_pv)) | |
1249 | #else | |
1250 | /* Except for the poison code, which uses & to scribble over the pointer after | |
1251 | free() is called. */ | |
1252 | # define SvPVX_mutable(sv) ((sv)->sv_u.svu_pv) | |
1253 | # define SvPVX_const(sv) ((const char*)((sv)->sv_u.svu_pv)) | |
1254 | #endif | |
bb496845 | 1255 | |
62703e72 NC |
1256 | #define SvIVXx(sv) SvIVX(sv) |
1257 | #define SvUVXx(sv) SvUVX(sv) | |
1258 | #define SvNVXx(sv) SvNVX(sv) | |
1259 | #define SvPVXx(sv) SvPVX(sv) | |
1260 | #define SvLENx(sv) SvLEN(sv) | |
1261 | #define SvENDx(sv) ((PL_Sv = (sv)), SvEND(PL_Sv)) | |
1262 | ||
1263 | ||
28e5dec8 JH |
1264 | /* Ask a scalar nicely to try to become an IV, if possible. |
1265 | Not guaranteed to stay returning void */ | |
1266 | /* Macro won't actually call sv_2iv if already IOK */ | |
1267 | #define SvIV_please(sv) \ | |
3ea8bc93 | 1268 | STMT_START {if (!SvIOKp(sv) && (SvFLAGS(sv) & (SVf_NOK|SVf_POK))) \ |
28e5dec8 | 1269 | (void) SvIV(sv); } STMT_END |
6f1401dc | 1270 | #define SvIV_please_nomg(sv) \ |
3ea8bc93 DD |
1271 | (!(SvFLAGS(sv) & (SVf_IOK|SVp_IOK)) && (SvFLAGS(sv) & (SVf_NOK|SVf_POK)) \ |
1272 | ? (sv_2iv_flags(sv, 0), SvIOK(sv)) \ | |
8a68f328 | 1273 | : SvIOK(sv)) |
79072805 | 1274 | #define SvIV_set(sv, val) \ |
f1fb8741 DM |
1275 | STMT_START { \ |
1276 | assert(PL_valid_types_IV_set[SvTYPE(sv) & SVt_MASK]); \ | |
08002bbf | 1277 | assert(!isGV_with_GP(sv)); \ |
b19bbeda | 1278 | (((XPVIV*) SvANY(sv))->xiv_iv = (val)); } STMT_END |
79072805 | 1279 | #define SvNV_set(sv, val) \ |
f1fb8741 DM |
1280 | STMT_START { \ |
1281 | assert(PL_valid_types_NV_set[SvTYPE(sv) & SVt_MASK]); \ | |
08002bbf | 1282 | assert(!isGV_with_GP(sv)); \ |
58430790 | 1283 | (((XPVNV*)SvANY(sv))->xnv_u.xnv_nv = (val)); } STMT_END |
79072805 | 1284 | #define SvPV_set(sv, val) \ |
f1fb8741 DM |
1285 | STMT_START { \ |
1286 | assert(PL_valid_types_PVX[SvTYPE(sv) & SVt_MASK]); \ | |
08002bbf | 1287 | assert(!isGV_with_GP(sv)); \ |
6f7e8353 NC |
1288 | assert(!(SvTYPE(sv) == SVt_PVIO \ |
1289 | && !(IoFLAGS(sv) & IOf_FAKE_DIRP))); \ | |
339049b0 | 1290 | ((sv)->sv_u.svu_pv = (val)); } STMT_END |
607fa7f2 | 1291 | #define SvUV_set(sv, val) \ |
f1fb8741 DM |
1292 | STMT_START { \ |
1293 | assert(PL_valid_types_IV_set[SvTYPE(sv) & SVt_MASK]); \ | |
08002bbf | 1294 | assert(!isGV_with_GP(sv)); \ |
607fa7f2 | 1295 | (((XPVUV*)SvANY(sv))->xuv_uv = (val)); } STMT_END |
b162af07 | 1296 | #define SvRV_set(sv, val) \ |
f1fb8741 DM |
1297 | STMT_START { \ |
1298 | assert(PL_valid_types_RV[SvTYPE(sv) & SVt_MASK]); \ | |
08002bbf | 1299 | assert(!isGV_with_GP(sv)); \ |
6f7e8353 NC |
1300 | assert(!(SvTYPE(sv) == SVt_PVIO \ |
1301 | && !(IoFLAGS(sv) & IOf_FAKE_DIRP))); \ | |
339049b0 | 1302 | ((sv)->sv_u.svu_rv = (val)); } STMT_END |
b162af07 SP |
1303 | #define SvMAGIC_set(sv, val) \ |
1304 | STMT_START { assert(SvTYPE(sv) >= SVt_PVMG); \ | |
e736a858 | 1305 | (((XPVMG*)SvANY(sv))->xmg_u.xmg_magic = (val)); } STMT_END |
b162af07 SP |
1306 | #define SvSTASH_set(sv, val) \ |
1307 | STMT_START { assert(SvTYPE(sv) >= SVt_PVMG); \ | |
1308 | (((XPVMG*) SvANY(sv))->xmg_stash = (val)); } STMT_END | |
79072805 | 1309 | #define SvCUR_set(sv, val) \ |
f1fb8741 | 1310 | STMT_START { \ |
8d919b0a FC |
1311 | assert(PL_valid_types_PVX[SvTYPE(sv) & SVt_MASK] \ |
1312 | || SvTYPE(sv) == SVt_REGEXP); \ | |
08002bbf | 1313 | assert(!isGV_with_GP(sv)); \ |
6f7e8353 NC |
1314 | assert(!(SvTYPE(sv) == SVt_PVIO \ |
1315 | && !(IoFLAGS(sv) & IOf_FAKE_DIRP))); \ | |
b162af07 | 1316 | (((XPV*) SvANY(sv))->xpv_cur = (val)); } STMT_END |
79072805 | 1317 | #define SvLEN_set(sv, val) \ |
f1fb8741 DM |
1318 | STMT_START { \ |
1319 | assert(PL_valid_types_PVX[SvTYPE(sv) & SVt_MASK]); \ | |
f7877b28 | 1320 | assert(!isGV_with_GP(sv)); \ |
6f7e8353 NC |
1321 | assert(!(SvTYPE(sv) == SVt_PVIO \ |
1322 | && !(IoFLAGS(sv) & IOf_FAKE_DIRP))); \ | |
b162af07 | 1323 | (((XPV*) SvANY(sv))->xpv_len = (val)); } STMT_END |
7ae8ee9e NC |
1324 | #define SvEND_set(sv, val) \ |
1325 | STMT_START { assert(SvTYPE(sv) >= SVt_PV); \ | |
3ec35e0f | 1326 | SvCUR_set(sv, (val) - SvPVX(sv)); } STMT_END |
79072805 | 1327 | |
b7e9a5c2 | 1328 | #define SvPV_renew(sv,n) \ |
1da4ca5f NC |
1329 | STMT_START { SvLEN_set(sv, n); \ |
1330 | SvPV_set((sv), (MEM_WRAP_CHECK_(n,char) \ | |
1331 | (char*)saferealloc((Malloc_t)SvPVX(sv), \ | |
1332 | (MEM_SIZE)((n))))); \ | |
1333 | } STMT_END | |
1334 | ||
1335 | #define SvPV_shrink_to_cur(sv) STMT_START { \ | |
1336 | const STRLEN _lEnGtH = SvCUR(sv) + 1; \ | |
1337 | SvPV_renew(sv, _lEnGtH); \ | |
1338 | } STMT_END | |
b7e9a5c2 | 1339 | |
771ba71a NC |
1340 | #define SvPV_free(sv) \ |
1341 | STMT_START { \ | |
1342 | assert(SvTYPE(sv) >= SVt_PV); \ | |
1343 | if (SvLEN(sv)) { \ | |
e537ac38 | 1344 | assert(!SvROK(sv)); \ |
5d9574c1 | 1345 | if(UNLIKELY(SvOOK(sv))) { \ |
69240efd NC |
1346 | STRLEN zok; \ |
1347 | SvOOK_offset(sv, zok); \ | |
1348 | SvPV_set(sv, SvPVX_mutable(sv) - zok); \ | |
771ba71a NC |
1349 | SvFLAGS(sv) &= ~SVf_OOK; \ |
1350 | } \ | |
1351 | Safefree(SvPVX(sv)); \ | |
1352 | } \ | |
1353 | } STMT_END | |
8bd4d4c5 | 1354 | |
43230e26 NC |
1355 | #ifdef PERL_CORE |
1356 | /* Code that crops up in three places to take a scalar and ready it to hold | |
1357 | a reference */ | |
1358 | # define prepare_SV_for_RV(sv) \ | |
1359 | STMT_START { \ | |
1360 | if (SvTYPE(sv) < SVt_PV && SvTYPE(sv) != SVt_IV) \ | |
1361 | sv_upgrade(sv, SVt_IV); \ | |
662f1f9e | 1362 | else if (SvTYPE(sv) >= SVt_PV) { \ |
43230e26 NC |
1363 | SvPV_free(sv); \ |
1364 | SvLEN_set(sv, 0); \ | |
1365 | SvCUR_set(sv, 0); \ | |
1366 | } \ | |
1367 | } STMT_END | |
1368 | #endif | |
373b357f | 1369 | |
cffe132d NC |
1370 | #ifndef PERL_CORE |
1371 | # define BmFLAGS(sv) (SvTAIL(sv) ? FBMcf_TAIL : 0) | |
1372 | #endif | |
6976cee3 | 1373 | |
60c8298a | 1374 | #if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) |
60c8298a | 1375 | # define BmUSEFUL(sv) \ |
b1bc3f34 | 1376 | (*({ SV *const _bmuseful = MUTABLE_SV(sv); \ |
408dc2ec | 1377 | assert(SvTYPE(_bmuseful) >= SVt_PVIV); \ |
e5ae200f | 1378 | assert(SvVALID(_bmuseful)); \ |
408dc2ec NC |
1379 | assert(!SvIOK(_bmuseful)); \ |
1380 | &(((XPVIV*) SvANY(_bmuseful))->xiv_u.xivu_iv); \ | |
8eeaf79a | 1381 | })) |
60c8298a | 1382 | #else |
50c7be83 | 1383 | # define BmUSEFUL(sv) ((XPVIV*) SvANY(sv))->xiv_u.xivu_iv |
b4f6c04b | 1384 | |
60c8298a | 1385 | #endif |
79072805 | 1386 | |
8922e438 FC |
1387 | #ifndef PERL_CORE |
1388 | # define BmRARE(sv) 0 | |
1389 | # define BmPREVIOUS(sv) 0 | |
1390 | #endif | |
1391 | ||
f2da823f | 1392 | #define FmLINES(sv) ((XPVIV*) SvANY(sv))->xiv_iv |
79072805 LW |
1393 | |
1394 | #define LvTYPE(sv) ((XPVLV*) SvANY(sv))->xlv_type | |
1395 | #define LvTARG(sv) ((XPVLV*) SvANY(sv))->xlv_targ | |
1396 | #define LvTARGOFF(sv) ((XPVLV*) SvANY(sv))->xlv_targoff | |
bbfdc870 | 1397 | #define LvSTARGOFF(sv) ((XPVLV*) SvANY(sv))->xlv_targoff_u.xlvu_stargoff |
79072805 | 1398 | #define LvTARGLEN(sv) ((XPVLV*) SvANY(sv))->xlv_targlen |
83f78d1a | 1399 | #define LvFLAGS(sv) ((XPVLV*) SvANY(sv))->xlv_flags |
79072805 | 1400 | |
6f7e8353 | 1401 | #define IoIFP(sv) (sv)->sv_u.svu_fp |
8990e307 LW |
1402 | #define IoOFP(sv) ((XPVIO*) SvANY(sv))->xio_ofp |
1403 | #define IoDIRP(sv) ((XPVIO*) SvANY(sv))->xio_dirp | |
4755096e | 1404 | #define IoANY(sv) ((XPVIO*) SvANY(sv))->xio_any |
c490b21c | 1405 | #define IoLINES(sv) ((XPVIO*) SvANY(sv))->xiv_u.xivu_iv |
8990e307 LW |
1406 | #define IoPAGE(sv) ((XPVIO*) SvANY(sv))->xio_page |
1407 | #define IoPAGE_LEN(sv) ((XPVIO*) SvANY(sv))->xio_page_len | |
1408 | #define IoLINES_LEFT(sv)((XPVIO*) SvANY(sv))->xio_lines_left | |
1409 | #define IoTOP_NAME(sv) ((XPVIO*) SvANY(sv))->xio_top_name | |
1410 | #define IoTOP_GV(sv) ((XPVIO*) SvANY(sv))->xio_top_gv | |
1411 | #define IoFMT_NAME(sv) ((XPVIO*) SvANY(sv))->xio_fmt_name | |
1412 | #define IoFMT_GV(sv) ((XPVIO*) SvANY(sv))->xio_fmt_gv | |
1413 | #define IoBOTTOM_NAME(sv)((XPVIO*) SvANY(sv))->xio_bottom_name | |
1414 | #define IoBOTTOM_GV(sv) ((XPVIO*) SvANY(sv))->xio_bottom_gv | |
8990e307 LW |
1415 | #define IoTYPE(sv) ((XPVIO*) SvANY(sv))->xio_type |
1416 | #define IoFLAGS(sv) ((XPVIO*) SvANY(sv))->xio_flags | |
1417 | ||
50952442 | 1418 | /* IoTYPE(sv) is a single character telling the type of I/O connection. */ |
3b6c1aba JH |
1419 | #define IoTYPE_RDONLY '<' |
1420 | #define IoTYPE_WRONLY '>' | |
1421 | #define IoTYPE_RDWR '+' | |
1422 | #define IoTYPE_APPEND 'a' | |
1423 | #define IoTYPE_PIPE '|' | |
1424 | #define IoTYPE_STD '-' /* stdin or stdout */ | |
1425 | #define IoTYPE_SOCKET 's' | |
1426 | #define IoTYPE_CLOSED ' ' | |
1427 | #define IoTYPE_IMPLICIT 'I' /* stdin or stdout or stderr */ | |
1428 | #define IoTYPE_NUMERIC '#' /* fdopen */ | |
03fcf2fc GS |
1429 | |
1430 | /* | |
954c1994 | 1431 | =for apidoc Am|bool|SvTAINTED|SV* sv |
8554e7a0 | 1432 | Checks to see if an SV is tainted. Returns TRUE if it is, FALSE if |
954c1994 GS |
1433 | not. |
1434 | ||
1435 | =for apidoc Am|void|SvTAINTED_on|SV* sv | |
c55831ac | 1436 | Marks an SV as tainted if tainting is enabled. |
954c1994 GS |
1437 | |
1438 | =for apidoc Am|void|SvTAINTED_off|SV* sv | |
8554e7a0 FC |
1439 | Untaints an SV. Be I<very> careful with this routine, as it short-circuits |
1440 | some of Perl's fundamental security features. XS module authors should not | |
954c1994 | 1441 | use this function unless they fully understand all the implications of |
72d33970 | 1442 | unconditionally untainting the value. Untainting should be done in the |
954c1994 GS |
1443 | standard perl fashion, via a carefully crafted regexp, rather than directly |
1444 | untainting variables. | |
1445 | ||
1446 | =for apidoc Am|void|SvTAINT|SV* sv | |
c98cdb04 FC |
1447 | Taints an SV if tainting is enabled, and if some input to the current |
1448 | expression is tainted--usually a variable, but possibly also implicit | |
1449 | inputs such as locale settings. C<SvTAINT> propagates that taintedness to | |
1450 | the outputs of an expression in a pessimistic fashion; i.e., without paying | |
1451 | attention to precisely which outputs are influenced by which inputs. | |
954c1994 GS |
1452 | |
1453 | =cut | |
1454 | */ | |
1455 | ||
a0714e2c | 1456 | #define sv_taint(sv) sv_magic((sv), NULL, PERL_MAGIC_taint, NULL, 0) |
aae9cea0 | 1457 | |
dc6d7f5c | 1458 | #ifdef NO_TAINT_SUPPORT |
284167a5 S |
1459 | # define SvTAINTED(sv) 0 |
1460 | #else | |
1461 | # define SvTAINTED(sv) (SvMAGICAL(sv) && sv_tainted(sv)) | |
1462 | #endif | |
5d9574c1 DM |
1463 | #define SvTAINTED_on(sv) STMT_START{ if(UNLIKELY(TAINTING_get)){sv_taint(sv);} }STMT_END |
1464 | #define SvTAINTED_off(sv) STMT_START{ if(UNLIKELY(TAINTING_get)){sv_untaint(sv);} }STMT_END | |
bbce6d69 | 1465 | |
c6ee37c5 MB |
1466 | #define SvTAINT(sv) \ |
1467 | STMT_START { \ | |
d48c660d DM |
1468 | assert(TAINTING_get || !TAINT_get); \ |
1469 | if (UNLIKELY(TAINT_get)) \ | |
1470 | SvTAINTED_on(sv); \ | |
c6ee37c5 | 1471 | } STMT_END |
79072805 | 1472 | |
954c1994 GS |
1473 | /* |
1474 | =for apidoc Am|char*|SvPV_force|SV* sv|STRLEN len | |
8bb025ae | 1475 | Like C<SvPV> but will force the SV into containing a string (C<SvPOK>), and |
fd142383 | 1476 | only a string (C<SvPOK_only>), by hook or by crook. You need force if you are |
8bb025ae | 1477 | going to update the C<SvPVX> directly. Processes get magic. |
954c1994 | 1478 | |
fd142383 | 1479 | Note that coercing an arbitrary scalar into a plain PV will potentially |
72d33970 | 1480 | strip useful data from it. For example if the SV was C<SvROK>, then the |
fd142383 DM |
1481 | referent will have its reference count decremented, and the SV itself may |
1482 | be converted to an C<SvPOK> scalar with a string buffer containing a value | |
1483 | such as C<"ARRAY(0x1234)">. | |
1484 | ||
645c22ef | 1485 | =for apidoc Am|char*|SvPV_force_nomg|SV* sv|STRLEN len |
fd142383 | 1486 | Like C<SvPV_force>, but doesn't process get magic. |
645c22ef | 1487 | |
954c1994 | 1488 | =for apidoc Am|char*|SvPV|SV* sv|STRLEN len |
5f08bad4 ST |
1489 | Returns a pointer to the string in the SV, or a stringified form of |
1490 | the SV if the SV does not contain a string. The SV may cache the | |
cfe3322a DG |
1491 | stringified version becoming C<SvPOK>. Handles 'get' magic. The |
1492 | C<len> variable will be set to the length of the string (this is a macro, so | |
fbe13c60 | 1493 | don't use C<&len>). See also C<L</SvPVx>> for a version which guarantees to |
796b6530 | 1494 | evaluate C<sv> only once. |
645c22ef | 1495 | |
fd142383 | 1496 | Note that there is no guarantee that the return value of C<SvPV()> is |
fe02ddb7 | 1497 | equal to C<SvPVX(sv)>, or that C<SvPVX(sv)> contains valid data, or that |
c07def6d | 1498 | successive calls to C<SvPV(sv)> will return the same pointer value each |
72d33970 | 1499 | time. This is due to the way that things like overloading and |
fe02ddb7 | 1500 | Copy-On-Write are handled. In these cases, the return value may point to |
796b6530 | 1501 | a temporary buffer or similar. If you absolutely need the C<SvPVX> field to |
fe02ddb7 | 1502 | be valid (for example, if you intend to write to it), then see |
fbe13c60 | 1503 | C<L</SvPV_force>>. |
fd142383 | 1504 | |
645c22ef | 1505 | =for apidoc Am|char*|SvPVx|SV* sv|STRLEN len |
4ea561bc NC |
1506 | A version of C<SvPV> which guarantees to evaluate C<sv> only once. |
1507 | Only use this if C<sv> is an expression with side effects, otherwise use the | |
b3adf4c0 | 1508 | more efficient C<SvPV>. |
954c1994 | 1509 | |
891f9566 YST |
1510 | =for apidoc Am|char*|SvPV_nomg|SV* sv|STRLEN len |
1511 | Like C<SvPV> but doesn't process magic. | |
1512 | ||
954c1994 | 1513 | =for apidoc Am|char*|SvPV_nolen|SV* sv |
fd142383 | 1514 | Like C<SvPV> but doesn't set a length variable. |
954c1994 | 1515 | |
71eb6d8c TC |
1516 | =for apidoc Am|char*|SvPV_nomg_nolen|SV* sv |
1517 | Like C<SvPV_nolen> but doesn't process magic. | |
1518 | ||
954c1994 | 1519 | =for apidoc Am|IV|SvIV|SV* sv |
fbe13c60 | 1520 | Coerces the given SV to an integer and returns it. See C<L</SvIVx>> for a |
796b6530 | 1521 | version which guarantees to evaluate C<sv> only once. |
645c22ef | 1522 | |
891f9566 YST |
1523 | =for apidoc Am|IV|SvIV_nomg|SV* sv |
1524 | Like C<SvIV> but doesn't process magic. | |
1525 | ||
645c22ef | 1526 | =for apidoc Am|IV|SvIVx|SV* sv |
8554e7a0 FC |
1527 | Coerces the given SV to an integer and returns it. |
1528 | Guarantees to evaluate C<sv> only once. Only use | |
1529 | this if C<sv> is an expression with side effects, | |
4ea561bc | 1530 | otherwise use the more efficient C<SvIV>. |
954c1994 GS |
1531 | |
1532 | =for apidoc Am|NV|SvNV|SV* sv | |
fbe13c60 | 1533 | Coerce the given SV to a double and return it. See C<L</SvNVx>> for a version |
796b6530 | 1534 | which guarantees to evaluate C<sv> only once. |
645c22ef | 1535 | |
6f1401dc DM |
1536 | =for apidoc Am|NV|SvNV_nomg|SV* sv |
1537 | Like C<SvNV> but doesn't process magic. | |
1538 | ||
645c22ef | 1539 | =for apidoc Am|NV|SvNVx|SV* sv |
8554e7a0 FC |
1540 | Coerces the given SV to a double and returns it. |
1541 | Guarantees to evaluate C<sv> only once. Only use | |
1542 | this if C<sv> is an expression with side effects, | |
4ea561bc | 1543 | otherwise use the more efficient C<SvNV>. |
954c1994 GS |
1544 | |
1545 | =for apidoc Am|UV|SvUV|SV* sv | |
fbe13c60 | 1546 | Coerces the given SV to an unsigned integer and returns it. See C<L</SvUVx>> |
796b6530 | 1547 | for a version which guarantees to evaluate C<sv> only once. |
645c22ef | 1548 | |
891f9566 YST |
1549 | =for apidoc Am|UV|SvUV_nomg|SV* sv |
1550 | Like C<SvUV> but doesn't process magic. | |
1551 | ||
645c22ef | 1552 | =for apidoc Am|UV|SvUVx|SV* sv |
8554e7a0 | 1553 | Coerces the given SV to an unsigned integer and |
feba1f01 | 1554 | returns it. Guarantees to evaluate C<sv> only once. Only |
8554e7a0 | 1555 | use this if C<sv> is an expression with side effects, |
4ea561bc | 1556 | otherwise use the more efficient C<SvUV>. |
954c1994 GS |
1557 | |
1558 | =for apidoc Am|bool|SvTRUE|SV* sv | |
1559 | Returns a boolean indicating whether Perl would evaluate the SV as true or | |
796b6530 KW |
1560 | false. See C<L</SvOK>> for a defined/undefined test. Handles 'get' magic |
1561 | unless the scalar is already C<SvPOK>, C<SvIOK> or C<SvNOK> (the public, not the | |
06c841cf FC |
1562 | private flags). |
1563 | ||
1564 | =for apidoc Am|bool|SvTRUE_nomg|SV* sv | |
1565 | Returns a boolean indicating whether Perl would evaluate the SV as true or | |
796b6530 | 1566 | false. See C<L</SvOK>> for a defined/undefined test. Does not handle 'get' magic. |
954c1994 | 1567 | |
645c22ef | 1568 | =for apidoc Am|char*|SvPVutf8_force|SV* sv|STRLEN len |
4a4088c4 | 1569 | Like C<SvPV_force>, but converts C<sv> to UTF-8 first if necessary. |
645c22ef DM |
1570 | |
1571 | =for apidoc Am|char*|SvPVutf8|SV* sv|STRLEN len | |
4a4088c4 | 1572 | Like C<SvPV>, but converts C<sv> to UTF-8 first if necessary. |
645c22ef | 1573 | |
b70b15d2 | 1574 | =for apidoc Am|char*|SvPVutf8_nolen|SV* sv |
4a4088c4 | 1575 | Like C<SvPV_nolen>, but converts C<sv> to UTF-8 first if necessary. |
645c22ef DM |
1576 | |
1577 | =for apidoc Am|char*|SvPVbyte_force|SV* sv|STRLEN len | |
796b6530 | 1578 | Like C<SvPV_force>, but converts C<sv> to byte representation first if necessary. |
645c22ef DM |
1579 | |
1580 | =for apidoc Am|char*|SvPVbyte|SV* sv|STRLEN len | |
796b6530 | 1581 | Like C<SvPV>, but converts C<sv> to byte representation first if necessary. |
645c22ef | 1582 | |
b70b15d2 | 1583 | =for apidoc Am|char*|SvPVbyte_nolen|SV* sv |
796b6530 | 1584 | Like C<SvPV_nolen>, but converts C<sv> to byte representation first if necessary. |
645c22ef DM |
1585 | |
1586 | =for apidoc Am|char*|SvPVutf8x_force|SV* sv|STRLEN len | |
4a4088c4 | 1587 | Like C<SvPV_force>, but converts C<sv> to UTF-8 first if necessary. |
796b6530 | 1588 | Guarantees to evaluate C<sv> only once; use the more efficient C<SvPVutf8_force> |
645c22ef DM |
1589 | otherwise. |
1590 | ||
1591 | =for apidoc Am|char*|SvPVutf8x|SV* sv|STRLEN len | |
4a4088c4 | 1592 | Like C<SvPV>, but converts C<sv> to UTF-8 first if necessary. |
796b6530 | 1593 | Guarantees to evaluate C<sv> only once; use the more efficient C<SvPVutf8> |
645c22ef DM |
1594 | otherwise. |
1595 | ||
1596 | =for apidoc Am|char*|SvPVbytex_force|SV* sv|STRLEN len | |
796b6530 KW |
1597 | Like C<SvPV_force>, but converts C<sv> to byte representation first if necessary. |
1598 | Guarantees to evaluate C<sv> only once; use the more efficient C<SvPVbyte_force> | |
645c22ef DM |
1599 | otherwise. |
1600 | ||
1601 | =for apidoc Am|char*|SvPVbytex|SV* sv|STRLEN len | |
796b6530 KW |
1602 | Like C<SvPV>, but converts C<sv> to byte representation first if necessary. |
1603 | Guarantees to evaluate C<sv> only once; use the more efficient C<SvPVbyte> | |
645c22ef DM |
1604 | otherwise. |
1605 | ||
df8dcb28 DD |
1606 | =for apidoc Am|U32|SvIsCOW|SV* sv |
1607 | Returns a U32 value indicating whether the SV is Copy-On-Write (either shared | |
19dbb8f1 | 1608 | hash key scalars, or full Copy On Write scalars if 5.9.0 is configured for |
8554e7a0 | 1609 | COW). |
19dbb8f1 NC |
1610 | |
1611 | =for apidoc Am|bool|SvIsCOW_shared_hash|SV* sv | |
1612 | Returns a boolean indicating whether the SV is Copy-On-Write shared hash key | |
1613 | scalar. | |
645c22ef | 1614 | |
0f76ff59 MHM |
1615 | =for apidoc Am|void|sv_catpvn_nomg|SV* sv|const char* ptr|STRLEN len |
1616 | Like C<sv_catpvn> but doesn't process magic. | |
1617 | ||
9dcc53ea Z |
1618 | =for apidoc Am|void|sv_catpv_nomg|SV* sv|const char* ptr |
1619 | Like C<sv_catpv> but doesn't process magic. | |
1620 | ||
0f76ff59 MHM |
1621 | =for apidoc Am|void|sv_setsv_nomg|SV* dsv|SV* ssv |
1622 | Like C<sv_setsv> but doesn't process magic. | |
1623 | ||
1624 | =for apidoc Am|void|sv_catsv_nomg|SV* dsv|SV* ssv | |
1625 | Like C<sv_catsv> but doesn't process magic. | |
1626 | ||
dc960812 SP |
1627 | =for apidoc Amdb|STRLEN|sv_utf8_upgrade_nomg|NN SV *sv |
1628 | ||
796b6530 | 1629 | Like C<sv_utf8_upgrade>, but doesn't do magic on C<sv>. |
dc960812 | 1630 | |
954c1994 GS |
1631 | =cut |
1632 | */ | |
1633 | ||
25da4f38 | 1634 | /* Let us hope that bitmaps for UV and IV are the same */ |
4bac9ae4 CS |
1635 | #define SvIV(sv) (SvIOK_nog(sv) ? SvIVX(sv) : sv_2iv(sv)) |
1636 | #define SvUV(sv) (SvUOK_nog(sv) ? SvUVX(sv) : sv_2uv(sv)) | |
1637 | #define SvNV(sv) (SvNOK_nog(sv) ? SvNVX(sv) : sv_2nv(sv)) | |
79072805 | 1638 | |
891f9566 YST |
1639 | #define SvIV_nomg(sv) (SvIOK(sv) ? SvIVX(sv) : sv_2iv_flags(sv, 0)) |
1640 | #define SvUV_nomg(sv) (SvIOK(sv) ? SvUVX(sv) : sv_2uv_flags(sv, 0)) | |
6f1401dc | 1641 | #define SvNV_nomg(sv) (SvNOK(sv) ? SvNVX(sv) : sv_2nv_flags(sv, 0)) |
891f9566 | 1642 | |
baca2b92 | 1643 | /* ----*/ |
8d6d96c1 | 1644 | |
4bac9ae4 CS |
1645 | #define SvPV(sv, lp) SvPV_flags(sv, lp, SV_GMAGIC) |
1646 | #define SvPV_const(sv, lp) SvPV_flags_const(sv, lp, SV_GMAGIC) | |
44d22300 | 1647 | #define SvPV_mutable(sv, lp) SvPV_flags_mutable(sv, lp, SV_GMAGIC) |
8d6d96c1 | 1648 | |
8d6d96c1 | 1649 | #define SvPV_flags(sv, lp, flags) \ |
4bac9ae4 | 1650 | (SvPOK_nog(sv) \ |
8d6d96c1 | 1651 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pv_flags(sv, &lp, flags)) |
32a5c6ec | 1652 | #define SvPV_flags_const(sv, lp, flags) \ |
4bac9ae4 | 1653 | (SvPOK_nog(sv) \ |
32a5c6ec | 1654 | ? ((lp = SvCUR(sv)), SvPVX_const(sv)) : \ |
c77ed9ca | 1655 | (const char*) sv_2pv_flags(sv, &lp, (flags|SV_CONST_RETURN))) |
2596d9fe | 1656 | #define SvPV_flags_const_nolen(sv, flags) \ |
4bac9ae4 | 1657 | (SvPOK_nog(sv) \ |
2596d9fe | 1658 | ? SvPVX_const(sv) : \ |
c77ed9ca | 1659 | (const char*) sv_2pv_flags(sv, 0, (flags|SV_CONST_RETURN))) |
44d22300 | 1660 | #define SvPV_flags_mutable(sv, lp, flags) \ |
4bac9ae4 | 1661 | (SvPOK_nog(sv) \ |
44d22300 | 1662 | ? ((lp = SvCUR(sv)), SvPVX_mutable(sv)) : \ |
c77ed9ca | 1663 | sv_2pv_flags(sv, &lp, (flags|SV_MUTABLE_RETURN))) |
79072805 | 1664 | |
8d6d96c1 | 1665 | #define SvPV_force(sv, lp) SvPV_force_flags(sv, lp, SV_GMAGIC) |
13c5b33c | 1666 | #define SvPV_force_nolen(sv) SvPV_force_flags_nolen(sv, SV_GMAGIC) |
32a5c6ec | 1667 | #define SvPV_force_mutable(sv, lp) SvPV_force_flags_mutable(sv, lp, SV_GMAGIC) |
baca2b92 | 1668 | |
8d6d96c1 | 1669 | #define SvPV_force_nomg(sv, lp) SvPV_force_flags(sv, lp, 0) |
2596d9fe | 1670 | #define SvPV_force_nomg_nolen(sv) SvPV_force_flags_nolen(sv, 0) |
8d6d96c1 | 1671 | |
8d6d96c1 | 1672 | #define SvPV_force_flags(sv, lp, flags) \ |
8bb025ae | 1673 | (SvPOK_pure_nogthink(sv) \ |
4bac9ae4 CS |
1674 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvn_force_flags(sv, &lp, flags)) |
1675 | ||
13c5b33c | 1676 | #define SvPV_force_flags_nolen(sv, flags) \ |
8bb025ae | 1677 | (SvPOK_pure_nogthink(sv) \ |
4bac9ae4 CS |
1678 | ? SvPVX(sv) : sv_pvn_force_flags(sv, 0, flags)) |
1679 | ||
32a5c6ec | 1680 | #define SvPV_force_flags_mutable(sv, lp, flags) \ |
8bb025ae | 1681 | (SvPOK_pure_nogthink(sv) \ |
4bac9ae4 | 1682 | ? ((lp = SvCUR(sv)), SvPVX_mutable(sv)) \ |
32a5c6ec | 1683 | : sv_pvn_force_flags(sv, &lp, flags|SV_MUTABLE_RETURN)) |
a0d0e21e | 1684 | |
1fa8b10d | 1685 | #define SvPV_nolen(sv) \ |
4bac9ae4 | 1686 | (SvPOK_nog(sv) \ |
dafda6d1 | 1687 | ? SvPVX(sv) : sv_2pv_flags(sv, 0, SV_GMAGIC)) |
70401c6b | 1688 | |
0334097d | 1689 | /* "_nomg" in these defines means no mg_get() */ |
71eb6d8c | 1690 | #define SvPV_nomg_nolen(sv) \ |
4bac9ae4 | 1691 | (SvPOK_nog(sv) \ |
71eb6d8c TC |
1692 | ? SvPVX(sv) : sv_2pv_flags(sv, 0, 0)) |
1693 | ||
9ce348e8 | 1694 | #define SvPV_nolen_const(sv) \ |
4bac9ae4 | 1695 | (SvPOK_nog(sv) \ |
9ce348e8 NC |
1696 | ? SvPVX_const(sv) : sv_2pv_flags(sv, 0, SV_GMAGIC|SV_CONST_RETURN)) |
1697 | ||
baca2b92 | 1698 | #define SvPV_nomg(sv, lp) SvPV_flags(sv, lp, 0) |
9ce348e8 | 1699 | #define SvPV_nomg_const(sv, lp) SvPV_flags_const(sv, lp, 0) |
2596d9fe | 1700 | #define SvPV_nomg_const_nolen(sv) SvPV_flags_const_nolen(sv, 0) |
5bc28da9 | 1701 | |
baca2b92 | 1702 | /* ----*/ |
70401c6b | 1703 | |
5bc28da9 | 1704 | #define SvPVutf8(sv, lp) \ |
4bac9ae4 | 1705 | (SvPOK_utf8_nog(sv) \ |
5bc28da9 | 1706 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pvutf8(sv, &lp)) |
70401c6b | 1707 | |
5bc28da9 | 1708 | #define SvPVutf8_force(sv, lp) \ |
8bb025ae | 1709 | (SvPOK_utf8_pure_nogthink(sv) \ |
5bc28da9 NIS |
1710 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvutf8n_force(sv, &lp)) |
1711 | ||
5bc28da9 | 1712 | #define SvPVutf8_nolen(sv) \ |
4bac9ae4 | 1713 | (SvPOK_utf8_nog(sv) \ |
dafda6d1 | 1714 | ? SvPVX(sv) : sv_2pvutf8(sv, 0)) |
70401c6b | 1715 | |
baca2b92 DM |
1716 | /* ----*/ |
1717 | ||
5bc28da9 | 1718 | #define SvPVbyte(sv, lp) \ |
4bac9ae4 | 1719 | (SvPOK_byte_nog(sv) \ |
5bc28da9 | 1720 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pvbyte(sv, &lp)) |
70401c6b | 1721 | |
5bc28da9 | 1722 | #define SvPVbyte_force(sv, lp) \ |
8bb025ae | 1723 | (SvPOK_byte_pure_nogthink(sv) \ |
a7ec4e2e | 1724 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvbyten_force(sv, &lp)) |
5bc28da9 | 1725 | |
5bc28da9 | 1726 | #define SvPVbyte_nolen(sv) \ |
4bac9ae4 | 1727 | (SvPOK_byte_nog(sv) \ |
dafda6d1 | 1728 | ? SvPVX(sv) : sv_2pvbyte(sv, 0)) |
70401c6b | 1729 | |
baca2b92 DM |
1730 | |
1731 | /* define FOOx(): idempotent versions of FOO(). If possible, use a local | |
1732 | * var to evaluate the arg once; failing that, use a global if possible; | |
1733 | * failing that, call a function to do the work | |
1734 | */ | |
1735 | ||
1736 | #define SvPVx_force(sv, lp) sv_pvn_force(sv, &lp) | |
1737 | #define SvPVutf8x_force(sv, lp) sv_pvutf8n_force(sv, &lp) | |
1738 | #define SvPVbytex_force(sv, lp) sv_pvbyten_force(sv, &lp) | |
1739 | ||
5d9574c1 DM |
1740 | #define SvTRUE(sv) (LIKELY(sv) && (UNLIKELY(SvGMAGICAL(sv)) ? sv_2bool(sv) : SvTRUE_common(sv, sv_2bool_nomg(sv)))) |
1741 | #define SvTRUE_nomg(sv) (LIKELY(sv) && ( SvTRUE_common(sv, sv_2bool_nomg(sv)))) | |
1742 | #define SvTRUE_NN(sv) (UNLIKELY(SvGMAGICAL(sv)) ? sv_2bool(sv) : SvTRUE_common(sv, sv_2bool_nomg(sv))) | |
716ae3b0 | 1743 | #define SvTRUE_nomg_NN(sv) ( SvTRUE_common(sv, sv_2bool_nomg(sv))) |
4bac9ae4 CS |
1744 | #define SvTRUE_common(sv,fallback) ( \ |
1745 | !SvOK(sv) \ | |
1746 | ? 0 \ | |
762dbf22 FC |
1747 | : SvPOK(sv) \ |
1748 | ? SvPVXtrue(sv) \ | |
1749 | : (SvFLAGS(sv) & (SVf_IOK|SVf_NOK)) \ | |
1750 | ? ( (SvIOK(sv) && SvIVX(sv) != 0) \ | |
659c4b96 | 1751 | || (SvNOK(sv) && SvNVX(sv) != 0.0)) \ |
4bac9ae4 CS |
1752 | : (fallback)) |
1753 | ||
5dc8bdac | 1754 | #if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) |
baca2b92 | 1755 | |
b1bc3f34 NC |
1756 | # define SvIVx(sv) ({SV *_sv = MUTABLE_SV(sv); SvIV(_sv); }) |
1757 | # define SvUVx(sv) ({SV *_sv = MUTABLE_SV(sv); SvUV(_sv); }) | |
1758 | # define SvNVx(sv) ({SV *_sv = MUTABLE_SV(sv); SvNV(_sv); }) | |
3de3296f | 1759 | # define SvPVx(sv, lp) ({SV *_sv = (sv); SvPV(_sv, lp); }) |
32a5c6ec | 1760 | # define SvPVx_const(sv, lp) ({SV *_sv = (sv); SvPV_const(_sv, lp); }) |
002e4c74 | 1761 | # define SvPVx_nolen(sv) ({SV *_sv = (sv); SvPV_nolen(_sv); }) |
9ce348e8 | 1762 | # define SvPVx_nolen_const(sv) ({SV *_sv = (sv); SvPV_nolen_const(_sv); }) |
3de3296f AE |
1763 | # define SvPVutf8x(sv, lp) ({SV *_sv = (sv); SvPVutf8(_sv, lp); }) |
1764 | # define SvPVbytex(sv, lp) ({SV *_sv = (sv); SvPVbyte(_sv, lp); }) | |
002e4c74 | 1765 | # define SvPVbytex_nolen(sv) ({SV *_sv = (sv); SvPVbyte_nolen(_sv); }) |
4bac9ae4 CS |
1766 | # define SvTRUEx(sv) ({SV *_sv = (sv); SvTRUE(_sv); }) |
1767 | # define SvTRUEx_nomg(sv) ({SV *_sv = (sv); SvTRUE_nomg(_sv); }) | |
baca2b92 | 1768 | |
a80f87c4 | 1769 | #else /* __GNUC__ */ |
baca2b92 | 1770 | |
a80f87c4 GS |
1771 | /* These inlined macros use globals, which will require a thread |
1772 | * declaration in user code, so we avoid them under threads */ | |
1773 | ||
3db8f154 MB |
1774 | # define SvIVx(sv) ((PL_Sv = (sv)), SvIV(PL_Sv)) |
1775 | # define SvUVx(sv) ((PL_Sv = (sv)), SvUV(PL_Sv)) | |
1776 | # define SvNVx(sv) ((PL_Sv = (sv)), SvNV(PL_Sv)) | |
1777 | # define SvPVx(sv, lp) ((PL_Sv = (sv)), SvPV(PL_Sv, lp)) | |
32a5c6ec | 1778 | # define SvPVx_const(sv, lp) ((PL_Sv = (sv)), SvPV_const(PL_Sv, lp)) |
002e4c74 | 1779 | # define SvPVx_nolen(sv) ((PL_Sv = (sv)), SvPV_nolen(PL_Sv)) |
5f1478c3 | 1780 | # define SvPVx_nolen_const(sv) ((PL_Sv = (sv)), SvPV_nolen_const(PL_Sv)) |
3db8f154 MB |
1781 | # define SvPVutf8x(sv, lp) ((PL_Sv = (sv)), SvPVutf8(PL_Sv, lp)) |
1782 | # define SvPVbytex(sv, lp) ((PL_Sv = (sv)), SvPVbyte(PL_Sv, lp)) | |
002e4c74 | 1783 | # define SvPVbytex_nolen(sv) ((PL_Sv = (sv)), SvPVbyte_nolen(PL_Sv)) |
4bac9ae4 CS |
1784 | # define SvTRUEx(sv) ((PL_Sv = (sv)), SvTRUE(PL_Sv)) |
1785 | # define SvTRUEx_nomg(sv) ((PL_Sv = (sv)), SvTRUE_nomg(PL_Sv)) | |
baca2b92 DM |
1786 | #endif /* __GNU__ */ |
1787 | ||
630b72b0 DD |
1788 | #define SvPVXtrue(sv) ( \ |
1789 | ((XPV*)SvANY((sv))) \ | |
1790 | && ( \ | |
1791 | ((XPV*)SvANY((sv)))->xpv_cur > 1 \ | |
1792 | || ( \ | |
1793 | ((XPV*)SvANY((sv)))->xpv_cur \ | |
1794 | && *(sv)->sv_u.svu_pv != '0' \ | |
1795 | ) \ | |
1796 | ) \ | |
1797 | ) | |
1798 | ||
e3918bb7 FC |
1799 | #define SvIsCOW(sv) (SvFLAGS(sv) & SVf_IsCOW) |
1800 | #define SvIsCOW_on(sv) (SvFLAGS(sv) |= SVf_IsCOW) | |
1801 | #define SvIsCOW_off(sv) (SvFLAGS(sv) &= ~SVf_IsCOW) | |
46187eeb | 1802 | #define SvIsCOW_shared_hash(sv) (SvIsCOW(sv) && SvLEN(sv) == 0) |
baca2b92 | 1803 | |
bdd68bc3 NC |
1804 | #define SvSHARED_HEK_FROM_PV(pvx) \ |
1805 | ((struct hek*)(pvx - STRUCT_OFFSET(struct hek, hek_key))) | |
0a356b31 | 1806 | #define SvSHARED_HASH(sv) (0 + SvSHARED_HEK_FROM_PV(SvPVX_const(sv))->hek_hash) |
c158a4fd | 1807 | |
baca2b92 DM |
1808 | /* flag values for sv_*_flags functions */ |
1809 | #define SV_IMMEDIATE_UNREF 1 | |
1810 | #define SV_GMAGIC 2 | |
765f542d | 1811 | #define SV_COW_DROP_PV 4 |
88632417 | 1812 | #define SV_UTF8_NO_ENCODING 8 |
5fcdf167 | 1813 | #define SV_NOSTEAL 16 |
32a5c6ec NC |
1814 | #define SV_CONST_RETURN 32 |
1815 | #define SV_MUTABLE_RETURN 64 | |
bddd5118 | 1816 | #define SV_SMAGIC 128 |
c1c21316 | 1817 | #define SV_HAS_TRAILING_NUL 256 |
34482cd6 | 1818 | #define SV_COW_SHARED_HASH_KEYS 512 |
cb23d5b1 | 1819 | /* This one is only enabled for PERL_OLD_COPY_ON_WRITE */ |
b7adcee4 FC |
1820 | /* XXX This flag actually enabled for any COW. But it appears not to do |
1821 | anything. Can we just remove it? Or will it serve some future | |
1822 | purpose. */ | |
cb23d5b1 | 1823 | #define SV_COW_OTHER_PVS 1024 |
9f621bb0 NC |
1824 | /* Make sv_2pv_flags return NULL if something is undefined. */ |
1825 | #define SV_UNDEF_RETURNS_NULL 2048 | |
b3ab6785 KW |
1826 | /* Tell sv_utf8_upgrade() to not check to see if an upgrade is really needed. |
1827 | * This is used when the caller has already determined it is, and avoids | |
1828 | * redundant work */ | |
1829 | #define SV_FORCE_UTF8_UPGRADE 4096 | |
aee036bb DM |
1830 | /* if (after resolving magic etc), the SV is found to be overloaded, |
1831 | * don't call the overload magic, just return as-is */ | |
1832 | #define SV_SKIP_OVERLOAD 8192 | |
20c88bf7 FC |
1833 | #define SV_CATBYTES 16384 |
1834 | #define SV_CATUTF8 32768 | |
34482cd6 NC |
1835 | |
1836 | /* The core is safe for this COW optimisation. XS code on CPAN may not be. | |
1837 | So only default to doing the COW setup if we're in the core. | |
1838 | */ | |
1839 | #ifdef PERL_CORE | |
1840 | # ifndef SV_DO_COW_SVSETSV | |
cb23d5b1 | 1841 | # define SV_DO_COW_SVSETSV SV_COW_SHARED_HASH_KEYS|SV_COW_OTHER_PVS |
34482cd6 NC |
1842 | # endif |
1843 | #endif | |
1844 | ||
1845 | #ifndef SV_DO_COW_SVSETSV | |
1846 | # define SV_DO_COW_SVSETSV 0 | |
1847 | #endif | |
1848 | ||
765f542d | 1849 | |
5abc721d NC |
1850 | #define sv_unref(sv) sv_unref_flags(sv, 0) |
1851 | #define sv_force_normal(sv) sv_force_normal_flags(sv, 0) | |
47518d95 NC |
1852 | #define sv_usepvn(sv, p, l) sv_usepvn_flags(sv, p, l, 0) |
1853 | #define sv_usepvn_mg(sv, p, l) sv_usepvn_flags(sv, p, l, SV_SMAGIC) | |
174c73e3 | 1854 | |
46187eeb NC |
1855 | /* We are about to replace the SV's current value. So if it's copy on write |
1856 | we need to normalise it. Use the SV_COW_DROP_PV flag hint to say that | |
1857 | the value is about to get thrown away, so drop the PV rather than go to | |
1858 | the effort of making a read-write copy only for it to get immediately | |
1859 | discarded. */ | |
765f542d NC |
1860 | |
1861 | #define SV_CHECK_THINKFIRST_COW_DROP(sv) if (SvTHINKFIRST(sv)) \ | |
1862 | sv_force_normal_flags(sv, SV_COW_DROP_PV) | |
46187eeb | 1863 | |
93c10d60 | 1864 | #ifdef PERL_COPY_ON_WRITE |
db2c6cb3 FC |
1865 | # define SvCANCOW(sv) \ |
1866 | (SvIsCOW(sv) \ | |
1867 | ? SvLEN(sv) ? CowREFCNT(sv) != SV_COW_REFCNT_MAX : 1 \ | |
1868 | : (SvFLAGS(sv) & CAN_COW_MASK) == CAN_COW_FLAGS \ | |
1869 | && SvCUR(sv)+1 < SvLEN(sv)) | |
1870 | /* Note: To allow 256 COW "copies", a refcnt of 0 means 1. */ | |
1871 | # define CowREFCNT(sv) (*(U8 *)(SvPVX(sv)+SvLEN(sv)-1)) | |
1872 | # define SV_COW_REFCNT_MAX ((1 << sizeof(U8)*8) - 1) | |
f7a8268c | 1873 | # define CAN_COW_MASK (SVf_POK|SVf_ROK|SVp_POK|SVf_FAKE| \ |
a623f893 | 1874 | SVf_OOK|SVf_BREAK|SVf_READONLY|SVf_PROTECT) |
b7adcee4 | 1875 | #endif |
ed252734 | 1876 | |
ed252734 NC |
1877 | #define CAN_COW_FLAGS (SVp_POK|SVf_POK) |
1878 | ||
765f542d NC |
1879 | #define SV_CHECK_THINKFIRST(sv) if (SvTHINKFIRST(sv)) \ |
1880 | sv_force_normal_flags(sv, 0) | |
1881 | ||
1882 | ||
baca2b92 DM |
1883 | /* all these 'functions' are now just macros */ |
1884 | ||
1885 | #define sv_pv(sv) SvPV_nolen(sv) | |
1886 | #define sv_pvutf8(sv) SvPVutf8_nolen(sv) | |
1887 | #define sv_pvbyte(sv) SvPVbyte_nolen(sv) | |
1888 | ||
1889 | #define sv_pvn_force_nomg(sv, lp) sv_pvn_force_flags(sv, lp, 0) | |
b3ab6785 | 1890 | #define sv_utf8_upgrade_flags(sv, flags) sv_utf8_upgrade_flags_grow(sv, flags, 0) |
baca2b92 DM |
1891 | #define sv_utf8_upgrade_nomg(sv) sv_utf8_upgrade_flags(sv, 0) |
1892 | #define sv_catpvn_nomg(dsv, sstr, slen) sv_catpvn_flags(dsv, sstr, slen, 0) | |
9dcc53ea | 1893 | #define sv_catpv_nomg(dsv, sstr) sv_catpv_flags(dsv, sstr, 0) |
34482cd6 NC |
1894 | #define sv_setsv(dsv, ssv) \ |
1895 | sv_setsv_flags(dsv, ssv, SV_GMAGIC|SV_DO_COW_SVSETSV) | |
1896 | #define sv_setsv_nomg(dsv, ssv) sv_setsv_flags(dsv, ssv, SV_DO_COW_SVSETSV) | |
baca2b92 DM |
1897 | #define sv_catsv(dsv, ssv) sv_catsv_flags(dsv, ssv, SV_GMAGIC) |
1898 | #define sv_catsv_nomg(dsv, ssv) sv_catsv_flags(dsv, ssv, 0) | |
b347df82 | 1899 | #define sv_catsv_mg(dsv, ssv) sv_catsv_flags(dsv, ssv, SV_GMAGIC|SV_SMAGIC) |
baca2b92 | 1900 | #define sv_catpvn(dsv, sstr, slen) sv_catpvn_flags(dsv, sstr, slen, SV_GMAGIC) |
4bac9ae4 CS |
1901 | #define sv_catpvn_mg(sv, sstr, slen) sv_catpvn_flags(sv, sstr, slen, SV_GMAGIC|SV_SMAGIC); |
1902 | #define sv_copypv(dsv, ssv) sv_copypv_flags(dsv, ssv, SV_GMAGIC) | |
1903 | #define sv_copypv_nomg(dsv, ssv) sv_copypv_flags(dsv, ssv, 0) | |
baca2b92 | 1904 | #define sv_2pv(sv, lp) sv_2pv_flags(sv, lp, SV_GMAGIC) |
cb2f1b7b NC |
1905 | #define sv_2pv_nolen(sv) sv_2pv(sv, 0) |
1906 | #define sv_2pvbyte_nolen(sv) sv_2pvbyte(sv, 0) | |
1907 | #define sv_2pvutf8_nolen(sv) sv_2pvutf8(sv, 0) | |
baca2b92 DM |
1908 | #define sv_2pv_nomg(sv, lp) sv_2pv_flags(sv, lp, 0) |
1909 | #define sv_pvn_force(sv, lp) sv_pvn_force_flags(sv, lp, SV_GMAGIC) | |
1910 | #define sv_utf8_upgrade(sv) sv_utf8_upgrade_flags(sv, SV_GMAGIC) | |
891f9566 YST |
1911 | #define sv_2iv(sv) sv_2iv_flags(sv, SV_GMAGIC) |
1912 | #define sv_2uv(sv) sv_2uv_flags(sv, SV_GMAGIC) | |
39d5de13 | 1913 | #define sv_2nv(sv) sv_2nv_flags(sv, SV_GMAGIC) |
078504b2 | 1914 | #define sv_eq(sv1, sv2) sv_eq_flags(sv1, sv2, SV_GMAGIC) |
e8c9c9d4 NC |
1915 | #define sv_cmp(sv1, sv2) sv_cmp_flags(sv1, sv2, SV_GMAGIC) |
1916 | #define sv_cmp_locale(sv1, sv2) sv_cmp_locale_flags(sv1, sv2, SV_GMAGIC) | |
078504b2 | 1917 | #define sv_collxfrm(sv, nxp) sv_cmp_flags(sv, nxp, SV_GMAGIC) |
06c841cf | 1918 | #define sv_2bool(sv) sv_2bool_flags(sv, SV_GMAGIC) |
4bac9ae4 | 1919 | #define sv_2bool_nomg(sv) sv_2bool_flags(sv, 0) |
84335ee9 NC |
1920 | #define sv_insert(bigstr, offset, len, little, littlelen) \ |
1921 | Perl_sv_insert_flags(aTHX_ (bigstr),(offset), (len), (little), \ | |
1922 | (littlelen), SV_GMAGIC) | |
108cb980 FC |
1923 | #define sv_mortalcopy(sv) \ |
1924 | Perl_sv_mortalcopy_flags(aTHX_ sv, SV_GMAGIC|SV_DO_COW_SVSETSV) | |
f34d8cdd FC |
1925 | #define sv_cathek(sv,hek) \ |
1926 | STMT_START { \ | |
1927 | HEK * const bmxk = hek; \ | |
1928 | sv_catpvn_flags(sv, HEK_KEY(bmxk), HEK_LEN(bmxk), \ | |
1929 | HEK_UTF8(bmxk) ? SV_CATUTF8 : SV_CATBYTES); \ | |
1930 | } STMT_END | |
baca2b92 | 1931 | |
db79b45b | 1932 | /* Should be named SvCatPVN_utf8_upgrade? */ |
4bac9ae4 | 1933 | #define sv_catpvn_nomg_utf8_upgrade(dsv, sstr, slen, nsv) \ |
db79b45b JH |
1934 | STMT_START { \ |
1935 | if (!(nsv)) \ | |
ad25789c | 1936 | nsv = newSVpvn_flags(sstr, slen, SVs_TEMP); \ |
db79b45b JH |
1937 | else \ |
1938 | sv_setpvn(nsv, sstr, slen); \ | |
1939 | SvUTF8_off(nsv); \ | |
1940 | sv_utf8_upgrade(nsv); \ | |
4bac9ae4 | 1941 | sv_catsv_nomg(dsv, nsv); \ |
db79b45b | 1942 | } STMT_END |
64534138 FC |
1943 | #define sv_catpvn_nomg_maybeutf8(dsv, sstr, slen, is_utf8) \ |
1944 | sv_catpvn_flags(dsv, sstr, slen, (is_utf8)?SV_CATUTF8:SV_CATBYTES) | |
79072805 | 1945 | |
25fdce4a | 1946 | #if defined(PERL_CORE) || defined(PERL_EXT) |
aec43834 FC |
1947 | # define sv_or_pv_len_utf8(sv, pv, bytelen) \ |
1948 | (SvGAMAGIC(sv) \ | |
1949 | ? utf8_length((U8 *)(pv), (U8 *)(pv)+(bytelen)) \ | |
1950 | : sv_len_utf8(sv)) | |
aec43834 FC |
1951 | #endif |
1952 | ||
954c1994 GS |
1953 | /* |
1954 | =for apidoc Am|SV*|newRV_inc|SV* sv | |
1955 | ||
1956 | Creates an RV wrapper for an SV. The reference count for the original SV is | |
1957 | incremented. | |
1958 | ||
1959 | =cut | |
1960 | */ | |
1961 | ||
5f05dabc | 1962 | #define newRV_inc(sv) newRV(sv) |
5f05dabc | 1963 | |
796b6530 | 1964 | /* the following macros update any magic values this C<sv> is associated with */ |
79072805 | 1965 | |
954c1994 | 1966 | /* |
ccfc67b7 JH |
1967 | =head1 Magical Functions |
1968 | ||
954c1994 | 1969 | =for apidoc Am|void|SvGETMAGIC|SV* sv |
f7e029ab FC |
1970 | Invokes C<mg_get> on an SV if it has 'get' magic. For example, this |
1971 | will call C<FETCH> on a tied variable. This macro evaluates its | |
954c1994 GS |
1972 | argument more than once. |
1973 | ||
1974 | =for apidoc Am|void|SvSETMAGIC|SV* sv | |
f7e029ab FC |
1975 | Invokes C<mg_set> on an SV if it has 'set' magic. This is necessary |
1976 | after modifying a scalar, in case it is a magical variable like C<$|> | |
1977 | or a tied variable (it calls C<STORE>). This macro evaluates its | |
954c1994 GS |
1978 | argument more than once. |
1979 | ||
87ef9da8 | 1980 | =for apidoc Am|void|SvSetSV|SV* dsv|SV* ssv |
796b6530 | 1981 | Calls C<sv_setsv> if C<dsv> is not the same as C<ssv>. May evaluate arguments |
f31006c9 | 1982 | more than once. Does not handle 'set' magic on the destination SV. |
954c1994 GS |
1983 | |
1984 | =for apidoc Am|void|SvSetSV_nosteal|SV* dsv|SV* ssv | |
796b6530 KW |
1985 | Calls a non-destructive version of C<sv_setsv> if C<dsv> is not the same as |
1986 | C<ssv>. May evaluate arguments more than once. | |
954c1994 | 1987 | |
87ef9da8 | 1988 | =for apidoc Am|void|SvSetMagicSV|SV* dsv|SV* ssv |
645c22ef DM |
1989 | Like C<SvSetSV>, but does any set magic required afterwards. |
1990 | ||
1991 | =for apidoc Am|void|SvSetMagicSV_nosteal|SV* dsv|SV* ssv | |
80663158 | 1992 | Like C<SvSetSV_nosteal>, but does any set magic required afterwards. |
645c22ef | 1993 | |
68795e93 | 1994 | =for apidoc Am|void|SvSHARE|SV* sv |
796b6530 | 1995 | Arranges for C<sv> to be shared between threads if a suitable module |
68795e93 NIS |
1996 | has been loaded. |
1997 | ||
1998 | =for apidoc Am|void|SvLOCK|SV* sv | |
796b6530 | 1999 | Arranges for a mutual exclusion lock to be obtained on C<sv> if a suitable module |
68795e93 NIS |
2000 | has been loaded. |
2001 | ||
2002 | =for apidoc Am|void|SvUNLOCK|SV* sv | |
796b6530 | 2003 | Releases a mutual exclusion lock on C<sv> if a suitable module |
68795e93 NIS |
2004 | has been loaded. |
2005 | ||
ccfc67b7 JH |
2006 | =head1 SV Manipulation Functions |
2007 | ||
679ac26e | 2008 | =for apidoc Am|char *|SvGROW|SV* sv|STRLEN len |
954c1994 GS |
2009 | Expands the character buffer in the SV so that it has room for the |
2010 | indicated number of bytes (remember to reserve space for an extra trailing | |
6602b933 | 2011 | C<NUL> character). Calls C<sv_grow> to perform the expansion if necessary. |
72d33970 | 2012 | Returns a pointer to the character |
796b6530 | 2013 | buffer. SV must be of type >= C<SVt_PV>. One |
4b1e7f06 | 2014 | alternative is to call C<sv_grow> if you are not sure of the type of SV. |
954c1994 | 2015 | |
45661033 YO |
2016 | =for apidoc Am|char *|SvPVCLEAR|SV* sv |
2017 | Ensures that sv is a SVt_PV and that its SvCUR is 0, and that it is | |
2018 | properly null terminated. Equivalent to sv_setpvs(""), but more efficient. | |
2019 | ||
954c1994 GS |
2020 | =cut |
2021 | */ | |
2022 | ||
45661033 | 2023 | #define SvPVCLEAR(sv) sv_setpv_bufsize(sv,0,0) |
16c91539 BM |
2024 | #define SvSHARE(sv) PL_sharehook(aTHX_ sv) |
2025 | #define SvLOCK(sv) PL_lockhook(aTHX_ sv) | |
2026 | #define SvUNLOCK(sv) PL_unlockhook(aTHX_ sv) | |
2027 | #define SvDESTROYABLE(sv) PL_destroyhook(aTHX_ sv) | |
68795e93 | 2028 | |
5d9574c1 DM |
2029 | #define SvGETMAGIC(x) ((void)(UNLIKELY(SvGMAGICAL(x)) && mg_get(x))) |
2030 | #define SvSETMAGIC(x) STMT_START { if (UNLIKELY(SvSMAGICAL(x))) mg_set(x); } STMT_END | |
79072805 | 2031 | |
54310121 | 2032 | #define SvSetSV_and(dst,src,finally) \ |
189b2af5 | 2033 | STMT_START { \ |
5d9574c1 | 2034 | if (LIKELY((dst) != (src))) { \ |
54310121 | 2035 | sv_setsv(dst, src); \ |
2036 | finally; \ | |
189b2af5 GS |
2037 | } \ |
2038 | } STMT_END | |
54310121 | 2039 | #define SvSetSV_nosteal_and(dst,src,finally) \ |
189b2af5 | 2040 | STMT_START { \ |
5d9574c1 | 2041 | if (LIKELY((dst) != (src))) { \ |
34482cd6 | 2042 | sv_setsv_flags(dst, src, SV_GMAGIC | SV_NOSTEAL | SV_DO_COW_SVSETSV); \ |
54310121 | 2043 | finally; \ |
189b2af5 GS |
2044 | } \ |
2045 | } STMT_END | |
79072805 | 2046 | |
54310121 | 2047 | #define SvSetSV(dst,src) \ |
c9d716f7 | 2048 | SvSetSV_and(dst,src,/*nothing*/;) |
54310121 | 2049 | #define SvSetSV_nosteal(dst,src) \ |
c9d716f7 | 2050 | SvSetSV_nosteal_and(dst,src,/*nothing*/;) |
54310121 | 2051 | |
2052 | #define SvSetMagicSV(dst,src) \ | |
4e3a8365 | 2053 | SvSetSV_and(dst,src,SvSETMAGIC(dst)) |
54310121 | 2054 | #define SvSetMagicSV_nosteal(dst,src) \ |
4e3a8365 | 2055 | SvSetSV_nosteal_and(dst,src,SvSETMAGIC(dst)) |
54310121 | 2056 | |
db79b45b | 2057 | |
1045810a | 2058 | #if !defined(SKIP_DEBUGGING) |
79072805 | 2059 | #define SvPEEK(sv) sv_peek(sv) |
3967c732 JD |
2060 | #else |
2061 | #define SvPEEK(sv) "" | |
2062 | #endif | |
79072805 | 2063 | |
3041a168 | 2064 | #define SvIMMORTAL(sv) (SvREADONLY(sv) && ((sv)==&PL_sv_undef || (sv)==&PL_sv_yes || (sv)==&PL_sv_no || (sv)==&PL_sv_placeholder)) |
36477c24 | 2065 | |
fe54beba DM |
2066 | #ifdef DEBUGGING |
2067 | /* exercise the immortal resurrection code in sv_free2() */ | |
2068 | # define SvREFCNT_IMMORTAL 1000 | |
2069 | #else | |
2070 | # define SvREFCNT_IMMORTAL ((~(U32)0)/2) | |
2071 | #endif | |
2072 | ||
567f3b56 TC |
2073 | /* |
2074 | =for apidoc Am|SV *|boolSV|bool b | |
2075 | ||
2076 | Returns a true SV if C<b> is a true value, or a false SV if C<b> is 0. | |
2077 | ||
fbe13c60 | 2078 | See also C<L</PL_sv_yes>> and C<L</PL_sv_no>>. |
567f3b56 TC |
2079 | |
2080 | =cut | |
2081 | */ | |
2082 | ||
3280af22 | 2083 | #define boolSV(b) ((b) ? &PL_sv_yes : &PL_sv_no) |
54310121 | 2084 | |
79072805 | 2085 | #define isGV(sv) (SvTYPE(sv) == SVt_PVGV) |
f7877b28 NC |
2086 | /* If I give every macro argument a different name, then there won't be bugs |
2087 | where nested macros get confused. Been there, done that. */ | |
2088 | #define isGV_with_GP(pwadak) \ | |
2e5b91de | 2089 | (((SvFLAGS(pwadak) & (SVp_POK|SVpgv_GP)) == SVpgv_GP) \ |
f7877b28 | 2090 | && (SvTYPE(pwadak) == SVt_PVGV || SvTYPE(pwadak) == SVt_PVLV)) |
2e5b91de | 2091 | #define isGV_with_GP_on(sv) STMT_START { \ |
70ad9799 SP |
2092 | assert (SvTYPE(sv) == SVt_PVGV || SvTYPE(sv) == SVt_PVLV); \ |
2093 | assert (!SvPOKp(sv)); \ | |
2094 | assert (!SvIOKp(sv)); \ | |
2095 | (SvFLAGS(sv) |= SVpgv_GP); \ | |
2e5b91de NC |
2096 | } STMT_END |
2097 | #define isGV_with_GP_off(sv) STMT_START { \ | |
70ad9799 SP |
2098 | assert (SvTYPE(sv) == SVt_PVGV || SvTYPE(sv) == SVt_PVLV); \ |
2099 | assert (!SvPOKp(sv)); \ | |
2100 | assert (!SvIOKp(sv)); \ | |
2e5b91de NC |
2101 | (SvFLAGS(sv) &= ~SVpgv_GP); \ |
2102 | } STMT_END | |
8d919b0a FC |
2103 | #define isREGEXP(sv) \ |
2104 | (SvTYPE(sv) == SVt_REGEXP \ | |
2105 | || (SvFLAGS(sv) & (SVTYPEMASK|SVp_POK|SVpgv_GP|SVf_FAKE)) \ | |
2106 | == (SVt_PVLV|SVf_FAKE)) | |
2e5b91de | 2107 | |
79072805 | 2108 | |
bba82a09 | 2109 | #ifdef PERL_ANY_COW |
db2c6cb3 | 2110 | # define SvGROW(sv,len) \ |
6bbd724f | 2111 | (SvIsCOW(sv) || SvLEN(sv) < (len) ? sv_grow(sv,len) : SvPVX(sv)) |
db2c6cb3 | 2112 | #else |
6bbd724f | 2113 | # define SvGROW(sv,len) (SvLEN(sv) < (len) ? sv_grow(sv,len) : SvPVX(sv)) |
db2c6cb3 | 2114 | #endif |
6bbd724f DM |
2115 | #define SvGROW_mutable(sv,len) \ |
2116 | (SvLEN(sv) < (len) ? sv_grow(sv,len) : SvPVX_mutable(sv)) | |
933fea7f | 2117 | #define Sv_Grow sv_grow |
3d35f11b | 2118 | |
a0739874 DM |
2119 | #define CLONEf_COPY_STACKS 1 |
2120 | #define CLONEf_KEEP_PTR_TABLE 2 | |
c43294b8 | 2121 | #define CLONEf_CLONE_HOST 4 |
0405e91e | 2122 | #define CLONEf_JOIN_IN 8 |
a0739874 | 2123 | |
8cf8f3d1 | 2124 | struct clone_params { |
d2d73c3e AB |
2125 | AV* stashes; |
2126 | UV flags; | |
59b40662 | 2127 | PerlInterpreter *proto_perl; |
1db366cc | 2128 | PerlInterpreter *new_perl; |
d08d57ef | 2129 | AV *unreferenced; |
8cf8f3d1 | 2130 | }; |
102d3b8a NC |
2131 | |
2132 | /* | |
740cce10 NC |
2133 | =for apidoc Am|SV*|newSVpvn_utf8|NULLOK const char* s|STRLEN len|U32 utf8 |
2134 | ||
30a15352 | 2135 | Creates a new SV and copies a string (which may contain C<NUL> (C<\0>) |
796b6530 | 2136 | characters) into it. If C<utf8> is true, calls |
740cce10 NC |
2137 | C<SvUTF8_on> on the new SV. Implemented as a wrapper around C<newSVpvn_flags>. |
2138 | ||
2139 | =cut | |
2140 | */ | |
2141 | ||
2142 | #define newSVpvn_utf8(s, len, u) newSVpvn_flags((s), (len), (u) ? SVf_UTF8 : 0) | |
2143 | ||
2144 | /* | |
35e035cc FC |
2145 | =for apidoc Amx|SV*|newSVpadname|PADNAME *pn |
2146 | ||
0f94cb1f | 2147 | Creates a new SV containing the pad name. |
35e035cc FC |
2148 | |
2149 | =cut | |
2150 | */ | |
2151 | ||
0f94cb1f | 2152 | #define newSVpadname(pn) newSVpvn_utf8(PadnamePV(pn), PadnameLEN(pn), TRUE) |
35e035cc FC |
2153 | |
2154 | /* | |
69240efd NC |
2155 | =for apidoc Am|void|SvOOK_offset|NN SV*sv|STRLEN len |
2156 | ||
796b6530 | 2157 | Reads into C<len> the offset from C<SvPVX> back to the true start of the |
69240efd | 2158 | allocated buffer, which will be non-zero if C<sv_chop> has been used to |
8554e7a0 | 2159 | efficiently remove characters from start of the buffer. Implemented as a |
2d7f6611 KW |
2160 | macro, which takes the address of C<len>, which must be of type C<STRLEN>. |
2161 | Evaluates C<sv> more than once. Sets C<len> to 0 if C<SvOOK(sv)> is false. | |
69240efd NC |
2162 | |
2163 | =cut | |
2164 | */ | |
2165 | ||
2166 | #ifdef DEBUGGING | |
2167 | /* Does the bot know something I don't? | |
2168 | 10:28 <@Nicholas> metabatman | |
2169 | 10:28 <+meta> Nicholas: crash | |
2170 | */ | |
2171 | # define SvOOK_offset(sv, offset) STMT_START { \ | |
2172 | assert(sizeof(offset) == sizeof(STRLEN)); \ | |
2173 | if (SvOOK(sv)) { \ | |
d845901f CS |
2174 | const U8 *_crash = (U8*)SvPVX_const(sv); \ |
2175 | (offset) = *--_crash; \ | |
2176 | if (!(offset)) { \ | |
2177 | _crash -= sizeof(STRLEN); \ | |
2178 | Copy(_crash, (U8 *)&(offset), sizeof(STRLEN), U8); \ | |
69240efd NC |
2179 | } \ |
2180 | { \ | |
2181 | /* Validate the preceding buffer's sentinels to \ | |
2182 | verify that no-one is using it. */ \ | |
d845901f CS |
2183 | const U8 *const _bonk = (U8*)SvPVX_const(sv) - (offset);\ |
2184 | while (_crash > _bonk) { \ | |
2185 | --_crash; \ | |
2186 | assert (*_crash == (U8)PTR2UV(_crash)); \ | |
69240efd NC |
2187 | } \ |
2188 | } \ | |
2189 | } else { \ | |
d845901f | 2190 | (offset) = 0; \ |
69240efd NC |
2191 | } \ |
2192 | } STMT_END | |
2193 | #else | |
2194 | /* This is the same code, but avoids using any temporary variables: */ | |
2195 | # define SvOOK_offset(sv, offset) STMT_START { \ | |
2196 | assert(sizeof(offset) == sizeof(STRLEN)); \ | |
2197 | if (SvOOK(sv)) { \ | |
d845901f CS |
2198 | (offset) = ((U8*)SvPVX_const(sv))[-1]; \ |
2199 | if (!(offset)) { \ | |
69240efd | 2200 | Copy(SvPVX_const(sv) - 1 - sizeof(STRLEN), \ |
d845901f | 2201 | (U8*)&(offset), sizeof(STRLEN), U8); \ |
69240efd NC |
2202 | } \ |
2203 | } else { \ | |
d845901f | 2204 | (offset) = 0; \ |
69240efd NC |
2205 | } \ |
2206 | } STMT_END | |
2207 | #endif | |
85dca89a NC |
2208 | |
2209 | #define newIO() MUTABLE_IO(newSV_type(SVt_PVIO)) | |
2210 | ||
a38ab475 RZ |
2211 | #define SV_CONST(name) \ |
2212 | PL_sv_consts[SV_CONST_##name] \ | |
2213 | ? PL_sv_consts[SV_CONST_##name] \ | |
2214 | : (PL_sv_consts[SV_CONST_##name] = newSVpv_share(#name, 0)) | |
2215 | ||
2216 | #define SV_CONST_TIESCALAR 0 | |
2217 | #define SV_CONST_TIEARRAY 1 | |
2218 | #define SV_CONST_TIEHASH 2 | |
2219 | #define SV_CONST_TIEHANDLE 3 | |
2220 | ||
2221 | #define SV_CONST_FETCH 4 | |
2222 | #define SV_CONST_FETCHSIZE 5 | |
2223 | #define SV_CONST_STORE 6 | |
2224 | #define SV_CONST_STORESIZE 7 | |
2225 | #define SV_CONST_EXISTS 8 | |
2226 | ||
2227 | #define SV_CONST_PUSH 9 | |
2228 | #define SV_CONST_POP 10 | |
2229 | #define SV_CONST_SHIFT 11 | |
2230 | #define SV_CONST_UNSHIFT 12 | |
2231 | #define SV_CONST_SPLICE 13 | |
2232 | #define SV_CONST_EXTEND 14 | |
2233 | ||
2234 | #define SV_CONST_FIRSTKEY 15 | |
2235 | #define SV_CONST_NEXTKEY 16 | |
2236 | #define SV_CONST_SCALAR 17 | |
2237 | ||
2238 | #define SV_CONST_OPEN 18 | |
2239 | #define SV_CONST_WRITE 19 | |
2240 | #define SV_CONST_PRINT 20 | |
2241 | #define SV_CONST_PRINTF 21 | |
2242 | #define SV_CONST_READ 22 | |
2243 | #define SV_CONST_READLINE 23 | |
2244 | #define SV_CONST_GETC 24 | |
2245 | #define SV_CONST_SEEK 25 | |
2246 | #define SV_CONST_TELL 26 | |
2247 | #define SV_CONST_EOF 27 | |
2248 | #define SV_CONST_BINMODE 28 | |
2249 | #define SV_CONST_FILENO 29 | |
2250 | #define SV_CONST_CLOSE 30 | |
2251 | ||
2252 | #define SV_CONST_DELETE 31 | |
2253 | #define SV_CONST_CLEAR 32 | |
2254 | #define SV_CONST_UNTIE 33 | |
2255 | #define SV_CONST_DESTROY 34 | |
2256 | ||
2257 | #define SV_CONSTS_COUNT 35 | |
2258 | ||
69240efd | 2259 | /* |
82fce3d0 DM |
2260 | * Bodyless IVs and NVs! |
2261 | * | |
2262 | * Since 5.9.2, we can avoid allocating a body for SVt_IV-type SVs. | |
2263 | * Since the larger IV-holding variants of SVs store their integer | |
2264 | * values in their respective bodies, the family of SvIV() accessor | |
2265 | * macros would naively have to branch on the SV type to find the | |
2266 | * integer value either in the HEAD or BODY. In order to avoid this | |
2267 | * expensive branch, a clever soul has deployed a great hack: | |
2268 | * We set up the SvANY pointer such that instead of pointing to a | |
2269 | * real body, it points into the memory before the location of the | |
2270 | * head. We compute this pointer such that the location of | |
2271 | * the integer member of the hypothetical body struct happens to | |
2272 | * be the same as the location of the integer member of the bodyless | |
2273 | * SV head. This now means that the SvIV() family of accessors can | |
2274 | * always read from the (hypothetical or real) body via SvANY. | |
2275 | * | |
2276 | * Since the 5.21 dev series, we employ the same trick for NVs | |
2277 | * if the architecture can support it (NVSIZE <= IVSIZE). | |
2278 | */ | |
2279 | ||
2280 | /* The following two macros compute the necessary offsets for the above | |
2281 | * trick and store them in SvANY for SvIV() (and friends) to use. */ | |
2282 | ||
2283 | #ifdef PERL_CORE | |
2284 | # define SET_SVANY_FOR_BODYLESS_IV(sv) \ | |
2285 | SvANY(sv) = (XPVIV*)((char*)&(sv->sv_u.svu_iv) \ | |
2286 | - STRUCT_OFFSET(XPVIV, xiv_iv)) | |
2287 | ||
2288 | # define SET_SVANY_FOR_BODYLESS_NV(sv) \ | |
2289 | SvANY(sv) = (XPVNV*)((char*)&(sv->sv_u.svu_nv) \ | |
2290 | - STRUCT_OFFSET(XPVNV, xnv_u.xnv_nv)) | |
2291 | #endif | |
2292 | ||
2293 | /* | |
14d04a33 | 2294 | * ex: set ts=8 sts=4 sw=4 et: |
102d3b8a | 2295 | */ |