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, | |
f40abc99 KW |
158 | * one in B.xs, and 'bodies_by_type[]' in sv.c. |
159 | * | |
160 | * The bits that match 0xf0 are CURRENTLY UNUSED, except that 0xFF means a | |
161 | * freed SV. The bits above that are for flags, like SVf_IOK */ | |
f1fb8741 DM |
162 | |
163 | #define SVt_MASK 0xf /* smallest bitmask that covers all types */ | |
164 | ||
cecf5685 | 165 | #ifndef PERL_CORE |
a5c7cb08 | 166 | /* Fast Boyer Moore tables are now stored in magic attached to PVMGs */ |
cecf5685 | 167 | # define SVt_PVBM SVt_PVMG |
4df7f6af NC |
168 | /* Anything wanting to create a reference from clean should ensure that it has |
169 | a scalar of type SVt_IV now: */ | |
170 | # define SVt_RV SVt_IV | |
cecf5685 NC |
171 | #endif |
172 | ||
d2a0f284 | 173 | /* There is collusion here with sv_clear - sv_clear exits early for SVt_NULL |
db93c0c4 NC |
174 | so never reaches the clause at the end that uses sv_type_details->body_size |
175 | to determine whether to call safefree(). Hence body_size can be set | |
176 | non-zero to record the size of HEs, without fear of bogus frees. */ | |
6a93a7e5 NC |
177 | #if defined(PERL_IN_HV_C) || defined(PERL_IN_XS_APITEST) |
178 | #define HE_SVSLOT SVt_NULL | |
179 | #endif | |
ff121dc6 DD |
180 | #ifdef PERL_IN_SV_C |
181 | # define SVt_FIRST SVt_NULL /* the type of SV that new_SV() in sv.c returns */ | |
182 | #endif | |
43e6e717 | 183 | |
232d1c15 NC |
184 | #define PERL_ARENA_ROOTS_SIZE (SVt_LAST) |
185 | ||
43e6e717 NC |
186 | /* typedefs to eliminate some typing */ |
187 | typedef struct he HE; | |
188 | typedef struct hek HEK; | |
189 | ||
79072805 LW |
190 | /* Using C's structural equivalence to help emulate C++ inheritance here... */ |
191 | ||
30153bd2 JC |
192 | /* start with 2 sv-head building blocks */ |
193 | #define _SV_HEAD(ptrtype) \ | |
194 | ptrtype sv_any; /* pointer to body */ \ | |
195 | U32 sv_refcnt; /* how many references to us */ \ | |
196 | U32 sv_flags /* what we are */ | |
197 | ||
5b306eef DD |
198 | #if NVSIZE <= IVSIZE |
199 | # define _NV_BODYLESS_UNION NV svu_nv; | |
200 | #else | |
201 | # define _NV_BODYLESS_UNION | |
202 | #endif | |
203 | ||
30153bd2 JC |
204 | #define _SV_HEAD_UNION \ |
205 | union { \ | |
2a12fdfc | 206 | char* svu_pv; /* pointer to malloced string */ \ |
30153bd2 JC |
207 | IV svu_iv; \ |
208 | UV svu_uv; \ | |
5b306eef | 209 | _NV_BODYLESS_UNION \ |
30153bd2 | 210 | SV* svu_rv; /* pointer to another SV */ \ |
8d919b0a | 211 | struct regexp* svu_rx; \ |
30153bd2 JC |
212 | SV** svu_array; \ |
213 | HE** svu_hash; \ | |
f7877b28 | 214 | GP* svu_gp; \ |
6f7e8353 | 215 | PerlIO *svu_fp; \ |
bb3b7d7b DD |
216 | } sv_u \ |
217 | _SV_HEAD_DEBUG | |
30153bd2 | 218 | |
bb3b7d7b DD |
219 | #ifdef DEBUG_LEAKING_SCALARS |
220 | #define _SV_HEAD_DEBUG ;\ | |
221 | PERL_BITFIELD32 sv_debug_optype:9; /* the type of OP that allocated us */ \ | |
222 | PERL_BITFIELD32 sv_debug_inpad:1; /* was allocated in a pad for an OP */ \ | |
223 | PERL_BITFIELD32 sv_debug_line:16; /* the line where we were allocated */ \ | |
224 | UV sv_debug_serial; /* serial number of sv allocation */ \ | |
225 | char * sv_debug_file; /* the file where we were allocated */ \ | |
226 | SV * sv_debug_parent /* what we were cloned from (ithreads)*/ | |
227 | #else | |
228 | #define _SV_HEAD_DEBUG | |
229 | #endif | |
30153bd2 | 230 | |
5e045b90 | 231 | struct STRUCT_SV { /* struct sv { */ |
30153bd2 JC |
232 | _SV_HEAD(void*); |
233 | _SV_HEAD_UNION; | |
79072805 LW |
234 | }; |
235 | ||
236 | struct gv { | |
30153bd2 JC |
237 | _SV_HEAD(XPVGV*); /* pointer to xpvgv body */ |
238 | _SV_HEAD_UNION; | |
79072805 LW |
239 | }; |
240 | ||
241 | struct cv { | |
30153bd2 JC |
242 | _SV_HEAD(XPVCV*); /* pointer to xpvcv body */ |
243 | _SV_HEAD_UNION; | |
79072805 LW |
244 | }; |
245 | ||
246 | struct av { | |
0f7b1ae0 | 247 | _SV_HEAD(XPVAV*); /* pointer to xpvav body */ |
30153bd2 | 248 | _SV_HEAD_UNION; |
79072805 LW |
249 | }; |
250 | ||
251 | struct hv { | |
30153bd2 JC |
252 | _SV_HEAD(XPVHV*); /* pointer to xpvhv body */ |
253 | _SV_HEAD_UNION; | |
8990e307 LW |
254 | }; |
255 | ||
256 | struct io { | |
30153bd2 JC |
257 | _SV_HEAD(XPVIO*); /* pointer to xpvio body */ |
258 | _SV_HEAD_UNION; | |
79072805 LW |
259 | }; |
260 | ||
d2f13c59 NC |
261 | struct p5rx { |
262 | _SV_HEAD(struct regexp*); /* pointer to regexp body */ | |
263 | _SV_HEAD_UNION; | |
264 | }; | |
265 | ||
30153bd2 | 266 | #undef _SV_HEAD |
0f7b1ae0 | 267 | #undef _SV_HEAD_UNION /* ensure no pollution */ |
30153bd2 | 268 | |
954c1994 | 269 | /* |
ccfc67b7 JH |
270 | =head1 SV Manipulation Functions |
271 | ||
954c1994 | 272 | =for apidoc Am|U32|SvREFCNT|SV* sv |
cb198164 YO |
273 | Returns the value of the object's reference count. Exposed |
274 | to perl code via Internals::SvREFCNT(). | |
954c1994 GS |
275 | |
276 | =for apidoc Am|SV*|SvREFCNT_inc|SV* sv | |
5df2f140 | 277 | Increments the reference count of the given SV, returning the SV. |
954c1994 | 278 | |
796b6530 KW |
279 | All of the following C<SvREFCNT_inc>* macros are optimized versions of |
280 | C<SvREFCNT_inc>, and can be replaced with C<SvREFCNT_inc>. | |
b37c2d43 AL |
281 | |
282 | =for apidoc Am|SV*|SvREFCNT_inc_NN|SV* sv | |
796b6530 KW |
283 | Same as C<SvREFCNT_inc>, but can only be used if you know C<sv> |
284 | is not C<NULL>. Since we don't have to check the NULLness, it's faster | |
b37c2d43 AL |
285 | and smaller. |
286 | ||
f2403e57 | 287 | =for apidoc Am|void|SvREFCNT_inc_void|SV* sv |
796b6530 | 288 | Same as C<SvREFCNT_inc>, but can only be used if you don't need the |
b37c2d43 AL |
289 | return value. The macro doesn't need to return a meaningful value. |
290 | ||
f2403e57 | 291 | =for apidoc Am|void|SvREFCNT_inc_void_NN|SV* sv |
796b6530 KW |
292 | Same as C<SvREFCNT_inc>, but can only be used if you don't need the return |
293 | value, and you know that C<sv> is not C<NULL>. The macro doesn't need | |
b37c2d43 AL |
294 | to return a meaningful value, or check for NULLness, so it's smaller |
295 | and faster. | |
296 | ||
297 | =for apidoc Am|SV*|SvREFCNT_inc_simple|SV* sv | |
796b6530 | 298 | Same as C<SvREFCNT_inc>, but can only be used with expressions without side |
4ea561bc | 299 | effects. Since we don't have to store a temporary value, it's faster. |
b37c2d43 AL |
300 | |
301 | =for apidoc Am|SV*|SvREFCNT_inc_simple_NN|SV* sv | |
796b6530 KW |
302 | Same as C<SvREFCNT_inc_simple>, but can only be used if you know C<sv> |
303 | is not C<NULL>. Since we don't have to check the NULLness, it's faster | |
b37c2d43 AL |
304 | and smaller. |
305 | ||
f2403e57 | 306 | =for apidoc Am|void|SvREFCNT_inc_simple_void|SV* sv |
796b6530 | 307 | Same as C<SvREFCNT_inc_simple>, but can only be used if you don't need the |
b37c2d43 AL |
308 | return value. The macro doesn't need to return a meaningful value. |
309 | ||
f2403e57 | 310 | =for apidoc Am|void|SvREFCNT_inc_simple_void_NN|SV* sv |
796b6530 KW |
311 | Same as C<SvREFCNT_inc>, but can only be used if you don't need the return |
312 | value, and you know that C<sv> is not C<NULL>. The macro doesn't need | |
e638c624 MHM |
313 | to return a meaningful value, or check for NULLness, so it's smaller |
314 | and faster. | |
b37c2d43 | 315 | |
954c1994 | 316 | =for apidoc Am|void|SvREFCNT_dec|SV* sv |
796b6530 | 317 | Decrements the reference count of the given SV. C<sv> may be C<NULL>. |
954c1994 | 318 | |
4a9a56a7 | 319 | =for apidoc Am|void|SvREFCNT_dec_NN|SV* sv |
796b6530 KW |
320 | Same as C<SvREFCNT_dec>, but can only be used if you know C<sv> |
321 | is not C<NULL>. Since we don't have to check the NULLness, it's faster | |
4a9a56a7 DM |
322 | and smaller. |
323 | ||
954c1994 | 324 | =for apidoc Am|svtype|SvTYPE|SV* sv |
fbe13c60 | 325 | Returns the type of the SV. See C<L</svtype>>. |
954c1994 GS |
326 | |
327 | =for apidoc Am|void|SvUPGRADE|SV* sv|svtype type | |
328 | Used to upgrade an SV to a more complex form. Uses C<sv_upgrade> to | |
fbe13c60 | 329 | perform the upgrade if necessary. See C<L</svtype>>. |
954c1994 GS |
330 | |
331 | =cut | |
332 | */ | |
333 | ||
463ee0b2 | 334 | #define SvANY(sv) (sv)->sv_any |
79072805 | 335 | #define SvFLAGS(sv) (sv)->sv_flags |
aeea060c | 336 | #define SvREFCNT(sv) (sv)->sv_refcnt |
a863c7d1 | 337 | |
27669aa4 FC |
338 | #define SvREFCNT_inc(sv) S_SvREFCNT_inc(MUTABLE_SV(sv)) |
339 | #define SvREFCNT_inc_simple(sv) SvREFCNT_inc(sv) | |
340 | #define SvREFCNT_inc_NN(sv) S_SvREFCNT_inc_NN(MUTABLE_SV(sv)) | |
341 | #define SvREFCNT_inc_void(sv) S_SvREFCNT_inc_void(MUTABLE_SV(sv)) | |
8990e307 | 342 | |
b37c2d43 | 343 | /* These guys don't need the curly blocks */ |
e638c624 | 344 | #define SvREFCNT_inc_simple_void(sv) STMT_START { if (sv) SvREFCNT(sv)++; } STMT_END |
b1bc3f34 NC |
345 | #define SvREFCNT_inc_simple_NN(sv) (++(SvREFCNT(sv)),MUTABLE_SV(sv)) |
346 | #define SvREFCNT_inc_void_NN(sv) (void)(++SvREFCNT(MUTABLE_SV(sv))) | |
347 | #define SvREFCNT_inc_simple_void_NN(sv) (void)(++SvREFCNT(MUTABLE_SV(sv))) | |
b37c2d43 | 348 | |
75e16a44 | 349 | #define SvREFCNT_dec(sv) S_SvREFCNT_dec(aTHX_ MUTABLE_SV(sv)) |
4a9a56a7 | 350 | #define SvREFCNT_dec_NN(sv) S_SvREFCNT_dec_NN(aTHX_ MUTABLE_SV(sv)) |
a863c7d1 | 351 | |
8990e307 | 352 | #define SVTYPEMASK 0xff |
1fef4616 | 353 | #define SvTYPE(sv) ((svtype)((sv)->sv_flags & SVTYPEMASK)) |
79072805 | 354 | |
0565a181 NC |
355 | /* Sadly there are some parts of the core that have pointers to already-freed |
356 | SV heads, and rely on being able to tell that they are now free. So mark | |
357 | them all by using a consistent macro. */ | |
7667e7f1 | 358 | #define SvIS_FREED(sv) UNLIKELY(((sv)->sv_flags == SVTYPEMASK)) |
0565a181 | 359 | |
24e08842 DM |
360 | /* this is defined in this peculiar way to avoid compiler warnings. |
361 | * See the <20121213131428.GD1842@iabyn.com> thread in p5p */ | |
463ea229 | 362 | #define SvUPGRADE(sv, mt) \ |
24e08842 | 363 | ((void)(SvTYPE(sv) >= (mt) || (sv_upgrade(sv, mt),1))) |
79072805 | 364 | |
3f7ef1d4 NC |
365 | #define SVf_IOK 0x00000100 /* has valid public integer value */ |
366 | #define SVf_NOK 0x00000200 /* has valid public numeric value */ | |
367 | #define SVf_POK 0x00000400 /* has valid public pointer value */ | |
368 | #define SVf_ROK 0x00000800 /* has a valid reference pointer */ | |
369 | ||
370 | #define SVp_IOK 0x00001000 /* has valid non-public integer value */ | |
371 | #define SVp_NOK 0x00002000 /* has valid non-public numeric value */ | |
372 | #define SVp_POK 0x00004000 /* has valid non-public pointer value */ | |
9a70c74b | 373 | #define SVp_SCREAM 0x00008000 /* currently unused on plain scalars */ |
2e5b91de NC |
374 | #define SVphv_CLONEABLE SVp_SCREAM /* PVHV (stashes) clone its objects */ |
375 | #define SVpgv_GP SVp_SCREAM /* GV has a valid GP */ | |
1ccdb730 NC |
376 | #define SVprv_PCS_IMPORTED SVp_SCREAM /* RV is a proxy for a constant |
377 | subroutine in another package. Set the | |
7eeb6e4e | 378 | GvIMPORTED_CV_on() if it needs to be |
1ccdb730 | 379 | expanded to a real GV */ |
cc25b9e2 DM |
380 | |
381 | /* SVf_PROTECT is what SVf_READONLY should have been: i.e. modifying | |
382 | * this SV is completely illegal. However, SVf_READONLY (via | |
383 | * Internals::SvREADONLY()) has come to be seen as a flag that can be | |
384 | * temporarily set and unset by the user to indicate e.g. whether a hash | |
385 | * is "locked". Now, Hash::Util et al only set SVf_READONLY, while core | |
386 | * sets both (SVf_READONLY|SVf_PROTECT) to indicate both to core and user | |
387 | * code that this SV should not be messed with. | |
388 | */ | |
fd01b4b7 | 389 | #define SVf_PROTECT 0x00010000 /* very read-only */ |
c0683843 | 390 | #define SVs_PADTMP 0x00020000 /* in use as tmp */ |
c0683843 FC |
391 | #define SVs_PADSTALE 0x00040000 /* lexical has gone out of scope; |
392 | only used when !PADTMP */ | |
2c39754a | 393 | #define SVs_TEMP 0x00080000 /* mortal (implies string is stealable) */ |
3f7ef1d4 NC |
394 | #define SVs_OBJECT 0x00100000 /* is "blessed" */ |
395 | #define SVs_GMG 0x00200000 /* has magical get method */ | |
396 | #define SVs_SMG 0x00400000 /* has magical set method */ | |
397 | #define SVs_RMG 0x00800000 /* has random magical methods */ | |
398 | ||
fea3622c | 399 | #define SVf_FAKE 0x01000000 /* 0: glob is just a copy |
3f7ef1d4 | 400 | 1: SV head arena wasn't malloc()ed |
e3918bb7 | 401 | 2: For PVCV, whether CvUNIQUE(cv) |
3f7ef1d4 NC |
402 | refers to an eval or once only |
403 | [CvEVAL(cv), CvSPECIAL(cv)] | |
0f94cb1f | 404 | 3: HV: informally reserved by DAPM |
2c39754a | 405 | for vtables */ |
3f7ef1d4 NC |
406 | #define SVf_OOK 0x02000000 /* has valid offset value. For a PVHV this |
407 | means that a hv_aux struct is present | |
408 | after the main array */ | |
409 | #define SVf_BREAK 0x04000000 /* refcnt is artificially low - used by | |
36c662f4 NC |
410 | SVs in final arena cleanup. |
411 | Set in S_regtry on PL_reg_curpm, so that | |
a5f48505 DM |
412 | perl_destruct will skip it. |
413 | Used for mark and sweep by OP_AASSIGN | |
414 | */ | |
3f7ef1d4 | 415 | #define SVf_READONLY 0x08000000 /* may not be modified */ |
8990e307 | 416 | |
a0d0e21e | 417 | |
8990e307 | 418 | |
5bc28da9 | 419 | |
a623f893 FC |
420 | #define SVf_THINKFIRST (SVf_READONLY|SVf_PROTECT|SVf_ROK|SVf_FAKE \ |
421 | |SVs_RMG|SVf_IsCOW) | |
5bc28da9 | 422 | |
a0d0e21e | 423 | #define SVf_OK (SVf_IOK|SVf_NOK|SVf_POK|SVf_ROK| \ |
2e5b91de | 424 | SVp_IOK|SVp_NOK|SVp_POK|SVpgv_GP) |
a0d0e21e | 425 | |
7a77f1af | 426 | #define PRIVSHIFT 4 /* (SVp_?OK >> PRIVSHIFT) == SVf_?OK */ |
8990e307 | 427 | |
d3d326f2 DM |
428 | /* SVf_AMAGIC means that the stash *may* have have overload methods. It's |
429 | * set each time a function is compiled into a stash, and is reset by the | |
430 | * overload code when called for the first time and finds that there are | |
431 | * no overload methods. Note that this used to be set on the object; but | |
432 | * is now only set on stashes. | |
433 | */ | |
cd028baa | 434 | #define SVf_AMAGIC 0x10000000 /* has magical overloaded methods */ |
45eaf8af FC |
435 | #define SVf_IsCOW 0x10000000 /* copy on write (shared hash key if |
436 | SvLEN == 0) */ | |
70bc21b7 | 437 | |
44b2d6d6 FC |
438 | /* Ensure this value does not clash with the GV_ADD* flags in gv.h, or the |
439 | CV_CKPROTO_* flags in op.c, or the padadd_* flags in pad.h: */ | |
cd028baa NC |
440 | #define SVf_UTF8 0x20000000 /* SvPV is UTF-8 encoded |
441 | This is also set on RVs whose overloaded | |
442 | stringification is UTF-8. This might | |
443 | only happen as a side effect of SvPV() */ | |
70bc21b7 DM |
444 | /* PVHV */ |
445 | #define SVphv_SHAREKEYS 0x20000000 /* PVHV keys live on shared string table */ | |
8990e307 | 446 | |
2e9f07a2 NC |
447 | /* PVAV could probably use 0x2000000 without conflict. I assume that PVFM can |
448 | be UTF-8 encoded, and PVCVs could well have UTF-8 prototypes. PVIOs haven't | |
449 | been restructured, so sometimes get used as string buffers. */ | |
450 | ||
70bc21b7 DM |
451 | |
452 | /* Some private flags. */ | |
453 | ||
e1dcbbca | 454 | |
26a32e18 | 455 | /* PVAV */ |
3f7ef1d4 | 456 | #define SVpav_REAL 0x40000000 /* free old entries */ |
26a32e18 | 457 | /* PVHV */ |
3f7ef1d4 | 458 | #define SVphv_LAZYDEL 0x40000000 /* entry in xhv_eiter must be deleted */ |
25da4f38 | 459 | |
26a32e18 | 460 | /* IV, PVIV, PVNV, PVMG, PVGV and (I assume) PVLV */ |
3f7ef1d4 | 461 | #define SVf_IVisUV 0x80000000 /* use XPVUV instead of XPVIV */ |
26a32e18 | 462 | /* PVAV */ |
3f7ef1d4 | 463 | #define SVpav_REIFY 0x80000000 /* can become real */ |
26a32e18 | 464 | /* PVHV */ |
3f7ef1d4 | 465 | #define SVphv_HASKFLAGS 0x80000000 /* keys have flag byte after hash */ |
26a32e18 | 466 | /* RV upwards. However, SVf_ROK and SVp_IOK are exclusive */ |
3f7ef1d4 | 467 | #define SVprv_WEAKREF 0x80000000 /* Weak reference */ |
d3ce79bd | 468 | /* pad name vars only */ |
810b8aa5 | 469 | |
6e128786 NC |
470 | #define _XPV_HEAD \ |
471 | HV* xmg_stash; /* class package */ \ | |
472 | union _xmgu xmg_u; \ | |
8de47657 | 473 | STRLEN xpv_cur; /* length of svu_pv as a C string */ \ |
8d919b0a FC |
474 | union { \ |
475 | STRLEN xpvlenu_len; /* allocated size */ \ | |
476 | char * xpvlenu_pv; /* regexp string */ \ | |
477 | } xpv_len_u | |
478 | ||
479 | #define xpv_len xpv_len_u.xpvlenu_len | |
bb02a38f | 480 | |
20f4945e MHM |
481 | union _xnvu { |
482 | NV xnv_nv; /* numeric value, if any */ | |
483 | HV * xgv_stash; | |
9420b268 | 484 | line_t xnv_lines; /* used internally by S_scan_subst() */ |
b4204fb6 | 485 | bool xnv_bm_tail; /* an SvVALID (BM) SV has an implicit "\n" */ |
20f4945e MHM |
486 | }; |
487 | ||
488 | union _xivu { | |
489 | IV xivu_iv; /* integer value */ | |
20f4945e | 490 | UV xivu_uv; |
20f4945e | 491 | HEK * xivu_namehek; /* xpvlv, xpvgv: GvNAME */ |
6432a58a | 492 | bool xivu_eval_seen; /* used internally by S_scan_subst() */ |
b4204fb6 | 493 | |
20f4945e MHM |
494 | }; |
495 | ||
496 | union _xmgu { | |
497 | MAGIC* xmg_magic; /* linked list of magicalness */ | |
5bec93be | 498 | STRLEN xmg_hash_index; /* used while freeing hash entries */ |
9b7476d7 | 499 | }; |
11ca45c0 | 500 | |
79072805 | 501 | struct xpv { |
20f4945e | 502 | _XPV_HEAD; |
79072805 LW |
503 | }; |
504 | ||
505 | struct xpviv { | |
20f4945e MHM |
506 | _XPV_HEAD; |
507 | union _xivu xiv_u; | |
79072805 LW |
508 | }; |
509 | ||
311a25d9 NC |
510 | #define xiv_iv xiv_u.xivu_iv |
511 | ||
ff68c719 | 512 | struct xpvuv { |
20f4945e MHM |
513 | _XPV_HEAD; |
514 | union _xivu xuv_u; | |
ff68c719 | 515 | }; |
516 | ||
20f4945e | 517 | #define xuv_uv xuv_u.xivu_uv |
311a25d9 | 518 | |
79072805 | 519 | struct xpvnv { |
20f4945e MHM |
520 | _XPV_HEAD; |
521 | union _xivu xiv_u; | |
6e128786 | 522 | union _xnvu xnv_u; |
79072805 LW |
523 | }; |
524 | ||
3cd3be43 | 525 | /* This structure must match the beginning of struct xpvhv in hv.h. */ |
79072805 | 526 | struct xpvmg { |
20f4945e | 527 | _XPV_HEAD; |
6e128786 NC |
528 | union _xivu xiv_u; |
529 | union _xnvu xnv_u; | |
79072805 LW |
530 | }; |
531 | ||
532 | struct xpvlv { | |
20f4945e | 533 | _XPV_HEAD; |
6e128786 NC |
534 | union _xivu xiv_u; |
535 | union _xnvu xnv_u; | |
bbfdc870 FC |
536 | union { |
537 | STRLEN xlvu_targoff; | |
538 | SSize_t xlvu_stargoff; | |
539 | } xlv_targoff_u; | |
79072805 LW |
540 | STRLEN xlv_targlen; |
541 | SV* xlv_targ; | |
dd28f7bb DM |
542 | char xlv_type; /* k=keys .=pos x=substr v=vec /=join/re |
543 | * y=alem/helem/iter t=tie T=tied HE */ | |
1b92e694 DM |
544 | char xlv_flags; /* 1 = negative offset 2 = negative len |
545 | 4 = out of range (vec) */ | |
79072805 LW |
546 | }; |
547 | ||
bbfdc870 FC |
548 | #define xlv_targoff xlv_targoff_u.xlvu_targoff |
549 | ||
d361b004 KW |
550 | struct xpvinvlist { |
551 | _XPV_HEAD; | |
da62e549 KW |
552 | IV prev_index; /* caches result of previous invlist_search() */ |
553 | STRLEN iterator; /* Stores where we are in iterating */ | |
554 | bool is_offset; /* The data structure for all inversion lists | |
555 | begins with an element for code point U+0000. | |
556 | If this bool is set, the actual list contains | |
557 | that 0; otherwise, the list actually begins | |
558 | with the following element. Thus to invert | |
559 | the list, merely toggle this flag */ | |
d361b004 KW |
560 | }; |
561 | ||
a5c7cb08 DM |
562 | /* This structure works in 2 ways - regular scalar, or GV with GP */ |
563 | ||
79072805 | 564 | struct xpvgv { |
20f4945e | 565 | _XPV_HEAD; |
6e128786 NC |
566 | union _xivu xiv_u; |
567 | union _xnvu xnv_u; | |
79072805 LW |
568 | }; |
569 | ||
51c78f1b | 570 | typedef U32 cv_flags_t; |
77a005ab | 571 | |
20f4945e MHM |
572 | #define _XPVCV_COMMON \ |
573 | HV * xcv_stash; \ | |
574 | union { \ | |
575 | OP * xcv_start; \ | |
576 | ANY xcv_xsubany; \ | |
577 | } xcv_start_u; \ | |
578 | union { \ | |
579 | OP * xcv_root; \ | |
580 | void (*xcv_xsub) (pTHX_ CV*); \ | |
581 | } xcv_root_u; \ | |
b290562e FC |
582 | union { \ |
583 | GV * xcv_gv; \ | |
584 | HEK * xcv_hek; \ | |
585 | } xcv_gv_u; \ | |
20f4945e | 586 | char * xcv_file; \ |
eacbb379 DD |
587 | union { \ |
588 | PADLIST * xcv_padlist; \ | |
db6e00bd | 589 | void * xcv_hscxt; \ |
eacbb379 | 590 | } xcv_padlist_u; \ |
20f4945e MHM |
591 | CV * xcv_outside; \ |
592 | U32 xcv_outside_seq; /* the COP sequence (at the point of our \ | |
593 | * compilation) in the lexically enclosing \ | |
594 | * sub */ \ | |
8de47657 FC |
595 | cv_flags_t xcv_flags; \ |
596 | I32 xcv_depth /* >= 2 indicates recursive call */ | |
8990e307 | 597 | |
0d856a3a FC |
598 | /* This structure must match XPVCV in cv.h */ |
599 | ||
20f4945e MHM |
600 | struct xpvfm { |
601 | _XPV_HEAD; | |
20f4945e | 602 | _XPVCV_COMMON; |
79072805 LW |
603 | }; |
604 | ||
167f2c4d | 605 | |
8990e307 | 606 | struct xpvio { |
20f4945e | 607 | _XPV_HEAD; |
6e128786 | 608 | union _xivu xiv_u; |
6f7e8353 NC |
609 | /* ifp and ofp are normally the same, but sockets need separate streams */ |
610 | PerlIO * xio_ofp; | |
c951e2ad NC |
611 | /* Cray addresses everything by word boundaries (64 bits) and |
612 | * code and data pointers cannot be mixed (which is exactly what | |
613 | * Perl_filter_add() tries to do with the dirp), hence the | |
614 | * following union trick (as suggested by Gurusamy Sarathy). | |
615 | * For further information see Geir Johansen's problem report | |
4fe48737 | 616 | * titled [ID 20000612.002 (#3366)] Perl problem on Cray system |
c951e2ad NC |
617 | * The any pointer (known as IoANY()) will also be a good place |
618 | * to hang any IO disciplines to. | |
619 | */ | |
620 | union { | |
621 | DIR * xiou_dirp; /* for opendir, readdir, etc */ | |
622 | void * xiou_any; /* for alignment */ | |
623 | } xio_dirpu; | |
624 | /* IV xio_lines is now in IVX $. */ | |
625 | IV xio_page; /* $% */ | |
626 | IV xio_page_len; /* $= */ | |
627 | IV xio_lines_left; /* $- */ | |
628 | char * xio_top_name; /* $^ */ | |
629 | GV * xio_top_gv; /* $^ */ | |
630 | char * xio_fmt_name; /* $~ */ | |
631 | GV * xio_fmt_gv; /* $~ */ | |
632 | char * xio_bottom_name;/* $^B */ | |
633 | GV * xio_bottom_gv; /* $^B */ | |
634 | char xio_type; | |
635 | U8 xio_flags; | |
8990e307 | 636 | }; |
167f2c4d | 637 | |
4755096e GS |
638 | #define xio_dirp xio_dirpu.xiou_dirp |
639 | #define xio_any xio_dirpu.xiou_any | |
8990e307 | 640 | |
e0c19803 GS |
641 | #define IOf_ARGV 1 /* this fp iterates over ARGV */ |
642 | #define IOf_START 2 /* check for null ARGV and substitute '-' */ | |
643 | #define IOf_FLUSH 4 /* this fp wants a flush after write op */ | |
644 | #define IOf_DIDTOP 8 /* just did top of form */ | |
645 | #define IOf_UNTAINT 16 /* consider this fp (and its data) "safe" */ | |
646 | #define IOf_NOLINE 32 /* slurped a pseudo-line from empty file */ | |
5bb89d25 NC |
647 | #define IOf_FAKE_DIRP 64 /* xio_dirp is fake (source filters kludge) |
648 | Also, when this is set, SvPVX() is valid */ | |
8990e307 | 649 | |
ed6116ce LW |
650 | /* The following macros define implementation-independent predicates on SVs. */ |
651 | ||
954c1994 | 652 | /* |
fbf9f983 RGS |
653 | =for apidoc Am|U32|SvNIOK|SV* sv |
654 | Returns a U32 value indicating whether the SV contains a number, integer or | |
954c1994 GS |
655 | double. |
656 | ||
fbf9f983 RGS |
657 | =for apidoc Am|U32|SvNIOKp|SV* sv |
658 | Returns a U32 value indicating whether the SV contains a number, integer or | |
fe749c9a | 659 | double. Checks the B<private> setting. Use C<SvNIOK> instead. |
954c1994 GS |
660 | |
661 | =for apidoc Am|void|SvNIOK_off|SV* sv | |
662 | Unsets the NV/IV status of an SV. | |
663 | ||
fbf9f983 | 664 | =for apidoc Am|U32|SvOK|SV* sv |
72d33970 | 665 | Returns a U32 value indicating whether the value is defined. This is |
c0b6140e | 666 | only meaningful for scalars. |
954c1994 | 667 | |
fbf9f983 RGS |
668 | =for apidoc Am|U32|SvIOKp|SV* sv |
669 | Returns a U32 value indicating whether the SV contains an integer. Checks | |
fe749c9a | 670 | the B<private> setting. Use C<SvIOK> instead. |
954c1994 | 671 | |
fbf9f983 RGS |
672 | =for apidoc Am|U32|SvNOKp|SV* sv |
673 | Returns a U32 value indicating whether the SV contains a double. Checks the | |
fe749c9a | 674 | B<private> setting. Use C<SvNOK> instead. |
954c1994 | 675 | |
fbf9f983 RGS |
676 | =for apidoc Am|U32|SvPOKp|SV* sv |
677 | Returns a U32 value indicating whether the SV contains a character string. | |
fe749c9a | 678 | Checks the B<private> setting. Use C<SvPOK> instead. |
954c1994 | 679 | |
fbf9f983 RGS |
680 | =for apidoc Am|U32|SvIOK|SV* sv |
681 | Returns a U32 value indicating whether the SV contains an integer. | |
954c1994 GS |
682 | |
683 | =for apidoc Am|void|SvIOK_on|SV* sv | |
684 | Tells an SV that it is an integer. | |
685 | ||
686 | =for apidoc Am|void|SvIOK_off|SV* sv | |
687 | Unsets the IV status of an SV. | |
688 | ||
689 | =for apidoc Am|void|SvIOK_only|SV* sv | |
796b6530 | 690 | Tells an SV that it is an integer and disables all other C<OK> bits. |
954c1994 | 691 | |
e331fc52 | 692 | =for apidoc Am|void|SvIOK_only_UV|SV* sv |
796b6530 | 693 | Tells an SV that it is an unsigned integer and disables all other C<OK> bits. |
e331fc52 | 694 | |
12fa07df | 695 | =for apidoc Am|bool|SvIOK_UV|SV* sv |
a6ceea06 KW |
696 | Returns a boolean indicating whether the SV contains an integer that must be |
697 | interpreted as unsigned. A non-negative integer whose value is within the | |
796b6530 | 698 | range of both an IV and a UV may be be flagged as either C<SvUOK> or C<SVIOK>. |
e331fc52 | 699 | |
fbf9f983 | 700 | =for apidoc Am|bool|SvUOK|SV* sv |
a6ceea06 KW |
701 | Returns a boolean indicating whether the SV contains an integer that must be |
702 | interpreted as unsigned. A non-negative integer whose value is within the | |
796b6530 | 703 | range of both an IV and a UV may be be flagged as either C<SvUOK> or C<SVIOK>. |
28e5dec8 | 704 | |
12fa07df | 705 | =for apidoc Am|bool|SvIOK_notUV|SV* sv |
d1be9408 | 706 | Returns a boolean indicating whether the SV contains a signed integer. |
e331fc52 | 707 | |
fbf9f983 RGS |
708 | =for apidoc Am|U32|SvNOK|SV* sv |
709 | Returns a U32 value indicating whether the SV contains a double. | |
954c1994 GS |
710 | |
711 | =for apidoc Am|void|SvNOK_on|SV* sv | |
712 | Tells an SV that it is a double. | |
713 | ||
714 | =for apidoc Am|void|SvNOK_off|SV* sv | |
715 | Unsets the NV status of an SV. | |
716 | ||
717 | =for apidoc Am|void|SvNOK_only|SV* sv | |
718 | Tells an SV that it is a double and disables all other OK bits. | |
719 | ||
fbf9f983 RGS |
720 | =for apidoc Am|U32|SvPOK|SV* sv |
721 | Returns a U32 value indicating whether the SV contains a character | |
954c1994 GS |
722 | string. |
723 | ||
724 | =for apidoc Am|void|SvPOK_on|SV* sv | |
725 | Tells an SV that it is a string. | |
726 | ||
727 | =for apidoc Am|void|SvPOK_off|SV* sv | |
728 | Unsets the PV status of an SV. | |
729 | ||
730 | =for apidoc Am|void|SvPOK_only|SV* sv | |
796b6530 | 731 | Tells an SV that it is a string and disables all other C<OK> bits. |
1e54db1a | 732 | Will also turn off the UTF-8 status. |
954c1994 | 733 | |
b0f01acb JP |
734 | =for apidoc Am|bool|SvVOK|SV* sv |
735 | Returns a boolean indicating whether the SV contains a v-string. | |
736 | ||
fbf9f983 | 737 | =for apidoc Am|U32|SvOOK|SV* sv |
69240efd NC |
738 | Returns a U32 indicating whether the pointer to the string buffer is offset. |
739 | This hack is used internally to speed up removal of characters from the | |
796b6530 KW |
740 | beginning of a C<SvPV>. When C<SvOOK> is true, then the start of the |
741 | allocated string buffer is actually C<SvOOK_offset()> bytes before C<SvPVX>. | |
742 | This offset used to be stored in C<SvIVX>, but is now stored within the spare | |
69240efd | 743 | part of the buffer. |
954c1994 | 744 | |
fbf9f983 | 745 | =for apidoc Am|U32|SvROK|SV* sv |
954c1994 GS |
746 | Tests if the SV is an RV. |
747 | ||
748 | =for apidoc Am|void|SvROK_on|SV* sv | |
749 | Tells an SV that it is an RV. | |
750 | ||
751 | =for apidoc Am|void|SvROK_off|SV* sv | |
752 | Unsets the RV status of an SV. | |
753 | ||
754 | =for apidoc Am|SV*|SvRV|SV* sv | |
755 | Dereferences an RV to return the SV. | |
756 | ||
757 | =for apidoc Am|IV|SvIVX|SV* sv | |
645c22ef | 758 | Returns the raw value in the SV's IV slot, without checks or conversions. |
796b6530 | 759 | Only use when you are sure C<SvIOK> is true. See also C<L</SvIV>>. |
954c1994 GS |
760 | |
761 | =for apidoc Am|UV|SvUVX|SV* sv | |
645c22ef | 762 | Returns the raw value in the SV's UV slot, without checks or conversions. |
796b6530 | 763 | Only use when you are sure C<SvIOK> is true. See also C<L</SvUV>>. |
954c1994 GS |
764 | |
765 | =for apidoc Am|NV|SvNVX|SV* sv | |
645c22ef | 766 | Returns the raw value in the SV's NV slot, without checks or conversions. |
796b6530 | 767 | Only use when you are sure C<SvNOK> is true. See also C<L</SvNV>>. |
954c1994 GS |
768 | |
769 | =for apidoc Am|char*|SvPVX|SV* sv | |
645c22ef | 770 | Returns a pointer to the physical string in the SV. The SV must contain a |
72d33970 FC |
771 | string. Prior to 5.9.3 it is not safe |
772 | to execute this macro unless the SV's | |
796b6530 | 773 | type >= C<SVt_PV>. |
954c1994 | 774 | |
5b36e945 FC |
775 | This is also used to store the name of an autoloaded subroutine in an XS |
776 | AUTOLOAD routine. See L<perlguts/Autoloading with XSUBs>. | |
89fc9e2a | 777 | |
954c1994 | 778 | =for apidoc Am|STRLEN|SvCUR|SV* sv |
fbe13c60 | 779 | Returns the length of the string which is in the SV. See C<L</SvLEN>>. |
954c1994 GS |
780 | |
781 | =for apidoc Am|STRLEN|SvLEN|SV* sv | |
659239a4 | 782 | Returns the size of the string buffer in the SV, not including any part |
fbe13c60 | 783 | attributable to C<SvOOK>. See C<L</SvCUR>>. |
954c1994 GS |
784 | |
785 | =for apidoc Am|char*|SvEND|SV* sv | |
f990ea3e FC |
786 | Returns a pointer to the spot just after the last character in |
787 | the string which is in the SV, where there is usually a trailing | |
417b32ce | 788 | C<NUL> character (even though Perl scalars do not strictly require it). |
796b6530 | 789 | See C<L</SvCUR>>. Access the character as C<*(SvEND(sv))>. |
954c1994 | 790 | |
f990ea3e FC |
791 | Warning: If C<SvCUR> is equal to C<SvLEN>, then C<SvEND> points to |
792 | unallocated memory. | |
793 | ||
954c1994 GS |
794 | =for apidoc Am|HV*|SvSTASH|SV* sv |
795 | Returns the stash of the SV. | |
796 | ||
672994ce | 797 | =for apidoc Am|void|SvIV_set|SV* sv|IV val |
20799e15 SP |
798 | Set the value of the IV pointer in sv to val. It is possible to perform |
799 | the same function of this macro with an lvalue assignment to C<SvIVX>. | |
800 | With future Perls, however, it will be more efficient to use | |
801 | C<SvIV_set> instead of the lvalue assignment to C<SvIVX>. | |
672994ce SP |
802 | |
803 | =for apidoc Am|void|SvNV_set|SV* sv|NV val | |
796b6530 | 804 | Set the value of the NV pointer in C<sv> to val. See C<L</SvIV_set>>. |
672994ce SP |
805 | |
806 | =for apidoc Am|void|SvPV_set|SV* sv|char* val | |
f2979eac DD |
807 | This is probably not what you want to use, you probably wanted |
808 | L</sv_usepvn_flags> or L</sv_setpvn> or L</sv_setpvs>. | |
235fc044 | 809 | |
f2979eac | 810 | Set the value of the PV pointer in C<sv> to the Perl allocated |
fbe13c60 | 811 | C<NUL>-terminated string C<val>. See also C<L</SvIV_set>>. |
f2979eac DD |
812 | |
813 | Remember to free the previous PV buffer. There are many things to check. | |
235fc044 FC |
814 | Beware that the existing pointer may be involved in copy-on-write or other |
815 | mischief, so do C<SvOOK_off(sv)> and use C<sv_force_normal> or | |
796b6530 | 816 | C<SvPV_force> (or check the C<SvIsCOW> flag) first to make sure this |
f2979eac DD |
817 | modification is safe. Then finally, if it is not a COW, call C<SvPV_free> to |
818 | free the previous PV buffer. | |
672994ce SP |
819 | |
820 | =for apidoc Am|void|SvUV_set|SV* sv|UV val | |
796b6530 | 821 | Set the value of the UV pointer in C<sv> to val. See C<L</SvIV_set>>. |
672994ce SP |
822 | |
823 | =for apidoc Am|void|SvRV_set|SV* sv|SV* val | |
796b6530 | 824 | Set the value of the RV pointer in C<sv> to val. See C<L</SvIV_set>>. |
672994ce SP |
825 | |
826 | =for apidoc Am|void|SvMAGIC_set|SV* sv|MAGIC* val | |
796b6530 | 827 | Set the value of the MAGIC pointer in C<sv> to val. See C<L</SvIV_set>>. |
672994ce | 828 | |
b6f4de24 | 829 | =for apidoc Am|void|SvSTASH_set|SV* sv|HV* val |
796b6530 | 830 | Set the value of the STASH pointer in C<sv> to val. See C<L</SvIV_set>>. |
672994ce | 831 | |
954c1994 | 832 | =for apidoc Am|void|SvCUR_set|SV* sv|STRLEN len |
fbe13c60 KW |
833 | Set the current length of the string which is in the SV. See C<L</SvCUR>> |
834 | and C<SvIV_set>>. | |
672994ce SP |
835 | |
836 | =for apidoc Am|void|SvLEN_set|SV* sv|STRLEN len | |
0ff57aee | 837 | Set the size of the string buffer for the SV. See C<L</SvLEN>>. |
954c1994 GS |
838 | |
839 | =cut | |
840 | */ | |
841 | ||
79072805 | 842 | #define SvNIOK(sv) (SvFLAGS(sv) & (SVf_IOK|SVf_NOK)) |
748a9306 | 843 | #define SvNIOKp(sv) (SvFLAGS(sv) & (SVp_IOK|SVp_NOK)) |
a0d0e21e | 844 | #define SvNIOK_off(sv) (SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK| \ |
25da4f38 | 845 | SVp_IOK|SVp_NOK|SVf_IVisUV)) |
79072805 | 846 | |
c7724415 FC |
847 | #define assert_not_ROK(sv) assert_(!SvROK(sv) || !SvRV(sv)) |
848 | #define assert_not_glob(sv) assert_(!isGV_with_GP(sv)) | |
906ed6d6 | 849 | |
3f2ee99a | 850 | #define SvOK(sv) (SvFLAGS(sv) & SVf_OK || isREGEXP(sv)) |
f7877b28 | 851 | #define SvOK_off(sv) (assert_not_ROK(sv) assert_not_glob(sv) \ |
dd2eae66 | 852 | SvFLAGS(sv) &= ~(SVf_OK| \ |
d41ff1b8 | 853 | SVf_IVisUV|SVf_UTF8), \ |
25da4f38 | 854 | SvOOK_off(sv)) |
54866b45 | 855 | #define SvOK_off_exc_UV(sv) (assert_not_ROK(sv) \ |
dd2eae66 | 856 | SvFLAGS(sv) &= ~(SVf_OK| \ |
d41ff1b8 | 857 | SVf_UTF8), \ |
a0d0e21e | 858 | SvOOK_off(sv)) |
79072805 | 859 | |
8990e307 LW |
860 | #define SvOKp(sv) (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) |
861 | #define SvIOKp(sv) (SvFLAGS(sv) & SVp_IOK) | |
b326ddff | 862 | #define SvIOKp_on(sv) (assert_not_glob(sv) \ |
765f542d | 863 | SvFLAGS(sv) |= SVp_IOK) |
8990e307 | 864 | #define SvNOKp(sv) (SvFLAGS(sv) & SVp_NOK) |
f7877b28 | 865 | #define SvNOKp_on(sv) (assert_not_glob(sv) SvFLAGS(sv) |= SVp_NOK) |
8990e307 | 866 | #define SvPOKp(sv) (SvFLAGS(sv) & SVp_POK) |
f7877b28 | 867 | #define SvPOKp_on(sv) (assert_not_ROK(sv) assert_not_glob(sv) \ |
906ed6d6 | 868 | SvFLAGS(sv) |= SVp_POK) |
463ee0b2 | 869 | |
79072805 | 870 | #define SvIOK(sv) (SvFLAGS(sv) & SVf_IOK) |
b326ddff | 871 | #define SvIOK_on(sv) (assert_not_glob(sv) \ |
765f542d | 872 | SvFLAGS(sv) |= (SVf_IOK|SVp_IOK)) |
25da4f38 | 873 | #define SvIOK_off(sv) (SvFLAGS(sv) &= ~(SVf_IOK|SVp_IOK|SVf_IVisUV)) |
0c34ef67 | 874 | #define SvIOK_only(sv) (SvOK_off(sv), \ |
a0d0e21e | 875 | SvFLAGS(sv) |= (SVf_IOK|SVp_IOK)) |
f7877b28 | 876 | #define SvIOK_only_UV(sv) (assert_not_glob(sv) SvOK_off_exc_UV(sv), \ |
25da4f38 | 877 | SvFLAGS(sv) |= (SVf_IOK|SVp_IOK)) |
70401c6b | 878 | |
25da4f38 IZ |
879 | #define SvIOK_UV(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV)) \ |
880 | == (SVf_IOK|SVf_IVisUV)) | |
28e5dec8 | 881 | #define SvUOK(sv) SvIOK_UV(sv) |
25da4f38 IZ |
882 | #define SvIOK_notUV(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV)) \ |
883 | == SVf_IOK) | |
884 | ||
885 | #define SvIsUV(sv) (SvFLAGS(sv) & SVf_IVisUV) | |
886 | #define SvIsUV_on(sv) (SvFLAGS(sv) |= SVf_IVisUV) | |
887 | #define SvIsUV_off(sv) (SvFLAGS(sv) &= ~SVf_IVisUV) | |
79072805 LW |
888 | |
889 | #define SvNOK(sv) (SvFLAGS(sv) & SVf_NOK) | |
f7877b28 NC |
890 | #define SvNOK_on(sv) (assert_not_glob(sv) \ |
891 | SvFLAGS(sv) |= (SVf_NOK|SVp_NOK)) | |
8990e307 | 892 | #define SvNOK_off(sv) (SvFLAGS(sv) &= ~(SVf_NOK|SVp_NOK)) |
0c34ef67 | 893 | #define SvNOK_only(sv) (SvOK_off(sv), \ |
a0d0e21e | 894 | SvFLAGS(sv) |= (SVf_NOK|SVp_NOK)) |
79072805 | 895 | |
914184e1 | 896 | /* |
fbf9f983 | 897 | =for apidoc Am|U32|SvUTF8|SV* sv |
3c813ed0 KW |
898 | Returns a U32 value indicating the UTF-8 status of an SV. If things are set-up |
899 | properly, this indicates whether or not the SV contains UTF-8 encoded data. | |
796b6530 | 900 | You should use this I<after> a call to C<SvPV()> or one of its variants, in |
fd142383 | 901 | case any call to string overloading updates the internal flag. |
914184e1 | 902 | |
119bc988 KW |
903 | If you want to take into account the L<bytes> pragma, use C<L</DO_UTF8>> |
904 | instead. | |
905 | ||
914184e1 | 906 | =for apidoc Am|void|SvUTF8_on|SV *sv |
1e54db1a | 907 | Turn on the UTF-8 status of an SV (the data is not changed, just the flag). |
d5ce4a7c | 908 | Do not use frivolously. |
914184e1 JH |
909 | |
910 | =for apidoc Am|void|SvUTF8_off|SV *sv | |
3c813ed0 KW |
911 | Unsets the UTF-8 status of an SV (the data is not changed, just the flag). |
912 | Do not use frivolously. | |
914184e1 JH |
913 | |
914 | =for apidoc Am|void|SvPOK_only_UTF8|SV* sv | |
796b6530 | 915 | Tells an SV that it is a string and disables all other C<OK> bits, |
1e54db1a | 916 | and leaves the UTF-8 status as it was. |
f1a1024e | 917 | |
914184e1 JH |
918 | =cut |
919 | */ | |
920 | ||
7a5fd60d NC |
921 | /* Ensure the return value of this macro does not clash with the GV_ADD* flags |
922 | in gv.h: */ | |
a7cb1f99 GS |
923 | #define SvUTF8(sv) (SvFLAGS(sv) & SVf_UTF8) |
924 | #define SvUTF8_on(sv) (SvFLAGS(sv) |= (SVf_UTF8)) | |
925 | #define SvUTF8_off(sv) (SvFLAGS(sv) &= ~(SVf_UTF8)) | |
5bc28da9 | 926 | |
79072805 | 927 | #define SvPOK(sv) (SvFLAGS(sv) & SVf_POK) |
f7877b28 | 928 | #define SvPOK_on(sv) (assert_not_ROK(sv) assert_not_glob(sv) \ |
906ed6d6 | 929 | SvFLAGS(sv) |= (SVf_POK|SVp_POK)) |
8990e307 | 930 | #define SvPOK_off(sv) (SvFLAGS(sv) &= ~(SVf_POK|SVp_POK)) |
f7877b28 | 931 | #define SvPOK_only(sv) (assert_not_ROK(sv) assert_not_glob(sv) \ |
dd2eae66 | 932 | SvFLAGS(sv) &= ~(SVf_OK| \ |
d41ff1b8 GS |
933 | SVf_IVisUV|SVf_UTF8), \ |
934 | SvFLAGS(sv) |= (SVf_POK|SVp_POK)) | |
f7877b28 | 935 | #define SvPOK_only_UTF8(sv) (assert_not_ROK(sv) assert_not_glob(sv) \ |
dd2eae66 | 936 | SvFLAGS(sv) &= ~(SVf_OK| \ |
d41ff1b8 | 937 | SVf_IVisUV), \ |
a0d0e21e | 938 | SvFLAGS(sv) |= (SVf_POK|SVp_POK)) |
79072805 | 939 | |
4f2da183 | 940 | #define SvVOK(sv) (SvMAGICAL(sv) \ |
b0a11fe1 RGS |
941 | && mg_find(sv,PERL_MAGIC_vstring)) |
942 | /* returns the vstring magic, if any */ | |
943 | #define SvVSTRING_mg(sv) (SvMAGICAL(sv) \ | |
4f2da183 | 944 | ? mg_find(sv,PERL_MAGIC_vstring) : NULL) |
b0a11fe1 | 945 | |
79072805 | 946 | #define SvOOK(sv) (SvFLAGS(sv) & SVf_OOK) |
a4f658f7 | 947 | #define SvOOK_on(sv) (SvFLAGS(sv) |= SVf_OOK) |
fa7a1e49 | 948 | #define SvOOK_off(sv) ((void)(SvOOK(sv) && (sv_backoff(sv),0))) |
79072805 | 949 | |
a0d0e21e LW |
950 | #define SvFAKE(sv) (SvFLAGS(sv) & SVf_FAKE) |
951 | #define SvFAKE_on(sv) (SvFLAGS(sv) |= SVf_FAKE) | |
952 | #define SvFAKE_off(sv) (SvFLAGS(sv) &= ~SVf_FAKE) | |
953 | ||
ed6116ce | 954 | #define SvROK(sv) (SvFLAGS(sv) & SVf_ROK) |
a0d0e21e | 955 | #define SvROK_on(sv) (SvFLAGS(sv) |= SVf_ROK) |
dd2eae66 | 956 | #define SvROK_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK)) |
79072805 | 957 | |
8990e307 LW |
958 | #define SvMAGICAL(sv) (SvFLAGS(sv) & (SVs_GMG|SVs_SMG|SVs_RMG)) |
959 | #define SvMAGICAL_on(sv) (SvFLAGS(sv) |= (SVs_GMG|SVs_SMG|SVs_RMG)) | |
960 | #define SvMAGICAL_off(sv) (SvFLAGS(sv) &= ~(SVs_GMG|SVs_SMG|SVs_RMG)) | |
79072805 | 961 | |
8990e307 LW |
962 | #define SvGMAGICAL(sv) (SvFLAGS(sv) & SVs_GMG) |
963 | #define SvGMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_GMG) | |
964 | #define SvGMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_GMG) | |
ed6116ce | 965 | |
8990e307 LW |
966 | #define SvSMAGICAL(sv) (SvFLAGS(sv) & SVs_SMG) |
967 | #define SvSMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_SMG) | |
968 | #define SvSMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_SMG) | |
ed6116ce | 969 | |
8990e307 LW |
970 | #define SvRMAGICAL(sv) (SvFLAGS(sv) & SVs_RMG) |
971 | #define SvRMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_RMG) | |
972 | #define SvRMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_RMG) | |
ed6116ce | 973 | |
a1cd65be | 974 | #define SvAMAGIC(sv) (SvROK(sv) && SvOBJECT(SvRV(sv)) && \ |
54c554f3 | 975 | HvAMAGIC(SvSTASH(SvRV(sv)))) |
a0d0e21e | 976 | |
0adc25b0 FC |
977 | /* To be used on the stashes themselves: */ |
978 | #define HvAMAGIC(hv) (SvFLAGS(hv) & SVf_AMAGIC) | |
979 | #define HvAMAGIC_on(hv) (SvFLAGS(hv) |= SVf_AMAGIC) | |
980 | #define HvAMAGIC_off(hv) (SvFLAGS(hv) &=~ SVf_AMAGIC) | |
981 | ||
4bac9ae4 | 982 | |
1078c6a2 | 983 | /* "nog" means "doesn't have get magic" */ |
4bac9ae4 CS |
984 | #define SvPOK_nog(sv) ((SvFLAGS(sv) & (SVf_POK|SVs_GMG)) == SVf_POK) |
985 | #define SvIOK_nog(sv) ((SvFLAGS(sv) & (SVf_IOK|SVs_GMG)) == SVf_IOK) | |
986 | #define SvUOK_nog(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV|SVs_GMG)) == (SVf_IOK|SVf_IVisUV)) | |
987 | #define SvNOK_nog(sv) ((SvFLAGS(sv) & (SVf_NOK|SVs_GMG)) == SVf_NOK) | |
988 | #define SvNIOK_nog(sv) (SvNIOK(sv) && !(SvFLAGS(sv) & SVs_GMG)) | |
989 | ||
990 | #define SvPOK_nogthink(sv) ((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST|SVs_GMG)) == SVf_POK) | |
991 | #define SvIOK_nogthink(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_THINKFIRST|SVs_GMG)) == SVf_IOK) | |
992 | #define SvUOK_nogthink(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV|SVf_THINKFIRST|SVs_GMG)) == (SVf_IOK|SVf_IVisUV)) | |
993 | #define SvNOK_nogthink(sv) ((SvFLAGS(sv) & (SVf_NOK|SVf_THINKFIRST|SVs_GMG)) == SVf_NOK) | |
994 | #define SvNIOK_nogthink(sv) (SvNIOK(sv) && !(SvFLAGS(sv) & (SVf_THINKFIRST|SVs_GMG))) | |
995 | ||
996 | #define SvPOK_utf8_nog(sv) ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVs_GMG)) == (SVf_POK|SVf_UTF8)) | |
997 | #define SvPOK_utf8_nogthink(sv) ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVf_THINKFIRST|SVs_GMG)) == (SVf_POK|SVf_UTF8)) | |
998 | ||
999 | #define SvPOK_byte_nog(sv) ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVs_GMG)) == SVf_POK) | |
1000 | #define SvPOK_byte_nogthink(sv) ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVf_THINKFIRST|SVs_GMG)) == SVf_POK) | |
1001 | ||
8bb025ae CS |
1002 | #define SvPOK_pure_nogthink(sv) \ |
1003 | ((SvFLAGS(sv) & (SVf_POK|SVf_IOK|SVf_NOK|SVf_ROK|SVpgv_GP|SVf_THINKFIRST|SVs_GMG)) == SVf_POK) | |
1004 | #define SvPOK_utf8_pure_nogthink(sv) \ | |
1005 | ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVf_IOK|SVf_NOK|SVf_ROK|SVpgv_GP|SVf_THINKFIRST|SVs_GMG)) == (SVf_POK|SVf_UTF8)) | |
1006 | #define SvPOK_byte_pure_nogthink(sv) \ | |
1007 | ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVf_IOK|SVf_NOK|SVf_ROK|SVpgv_GP|SVf_THINKFIRST|SVs_GMG)) == SVf_POK) | |
1008 | ||
d34786ba | 1009 | /* |
458b44e7 | 1010 | =for apidoc Am|U32|SvGAMAGIC|SV* sv |
d34786ba | 1011 | |
8554e7a0 FC |
1012 | Returns true if the SV has get magic or |
1013 | overloading. If either is true then | |
d34786ba | 1014 | the scalar is active data, and has the potential to return a new value every |
8554e7a0 FC |
1015 | time it is accessed. Hence you must be careful to |
1016 | only read it once per user logical operation and work | |
1017 | with that returned value. If neither is true then | |
d34786ba NC |
1018 | the scalar's value cannot change unless written to. |
1019 | ||
1020 | =cut | |
1021 | */ | |
1022 | ||
dd2eae66 | 1023 | #define SvGAMAGIC(sv) (SvGMAGICAL(sv) || SvAMAGIC(sv)) |
1426bbf4 | 1024 | |
9299023c | 1025 | #define Gv_AMG(stash) \ |
d3c7a87b FC |
1026 | (HvNAME(stash) && Gv_AMupdate(stash,FALSE) \ |
1027 | ? 1 \ | |
1028 | : (HvAMAGIC_off(stash), 0)) | |
a0d0e21e | 1029 | |
810b8aa5 GS |
1030 | #define SvWEAKREF(sv) ((SvFLAGS(sv) & (SVf_ROK|SVprv_WEAKREF)) \ |
1031 | == (SVf_ROK|SVprv_WEAKREF)) | |
1032 | #define SvWEAKREF_on(sv) (SvFLAGS(sv) |= (SVf_ROK|SVprv_WEAKREF)) | |
1033 | #define SvWEAKREF_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK|SVprv_WEAKREF)) | |
1034 | ||
1ccdb730 NC |
1035 | #define SvPCS_IMPORTED(sv) ((SvFLAGS(sv) & (SVf_ROK|SVprv_PCS_IMPORTED)) \ |
1036 | == (SVf_ROK|SVprv_PCS_IMPORTED)) | |
1037 | #define SvPCS_IMPORTED_on(sv) (SvFLAGS(sv) |= (SVf_ROK|SVprv_PCS_IMPORTED)) | |
1038 | #define SvPCS_IMPORTED_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK|SVprv_PCS_IMPORTED)) | |
1039 | ||
a11eaecb FC |
1040 | /* |
1041 | =for apidoc m|U32|SvTHINKFIRST|SV *sv | |
1042 | ||
796b6530 KW |
1043 | A quick flag check to see whether an C<sv> should be passed to C<sv_force_normal> |
1044 | to be "downgraded" before C<SvIVX> or C<SvPVX> can be modified directly. | |
a11eaecb | 1045 | |
796b6530 KW |
1046 | For example, if your scalar is a reference and you want to modify the C<SvIVX> |
1047 | slot, you can't just do C<SvROK_off>, as that will leak the referent. | |
a11eaecb FC |
1048 | |
1049 | This is used internally by various sv-modifying functions, such as | |
ef058b33 | 1050 | C<sv_setsv>, C<sv_setiv> and C<sv_pvn_force>. |
a11eaecb FC |
1051 | |
1052 | One case that this does not handle is a gv without SvFAKE set. After | |
1053 | ||
1054 | if (SvTHINKFIRST(gv)) sv_force_normal(gv); | |
1055 | ||
1056 | it will still be a gv. | |
1057 | ||
796b6530 KW |
1058 | C<SvTHINKFIRST> sometimes produces false positives. In those cases |
1059 | C<sv_force_normal> does nothing. | |
a11eaecb FC |
1060 | |
1061 | =cut | |
1062 | */ | |
1063 | ||
a0d0e21e | 1064 | #define SvTHINKFIRST(sv) (SvFLAGS(sv) & SVf_THINKFIRST) |
ed6116ce | 1065 | |
c0683843 FC |
1066 | #define SVs_PADMY 0 |
1067 | #define SvPADMY(sv) !(SvFLAGS(sv) & SVs_PADTMP) | |
145bf8ee FC |
1068 | #ifndef PERL_CORE |
1069 | # define SvPADMY_on(sv) SvPADTMP_off(sv) | |
1070 | #endif | |
d9d18af6 | 1071 | |
c0683843 FC |
1072 | #define SvPADTMP(sv) (SvFLAGS(sv) & (SVs_PADTMP)) |
1073 | #define SvPADSTALE(sv) (SvFLAGS(sv) & (SVs_PADSTALE)) | |
62bb6514 | 1074 | |
145bf8ee FC |
1075 | #define SvPADTMP_on(sv) (SvFLAGS(sv) |= SVs_PADTMP) |
1076 | #define SvPADTMP_off(sv) (SvFLAGS(sv) &= ~SVs_PADTMP) | |
541377b1 FC |
1077 | #define SvPADSTALE_on(sv) S_SvPADSTALE_on(MUTABLE_SV(sv)) |
1078 | #define SvPADSTALE_off(sv) S_SvPADSTALE_off(MUTABLE_SV(sv)) | |
ed6116ce | 1079 | |
8990e307 LW |
1080 | #define SvTEMP(sv) (SvFLAGS(sv) & SVs_TEMP) |
1081 | #define SvTEMP_on(sv) (SvFLAGS(sv) |= SVs_TEMP) | |
1082 | #define SvTEMP_off(sv) (SvFLAGS(sv) &= ~SVs_TEMP) | |
79072805 | 1083 | |
8990e307 LW |
1084 | #define SvOBJECT(sv) (SvFLAGS(sv) & SVs_OBJECT) |
1085 | #define SvOBJECT_on(sv) (SvFLAGS(sv) |= SVs_OBJECT) | |
1086 | #define SvOBJECT_off(sv) (SvFLAGS(sv) &= ~SVs_OBJECT) | |
79072805 | 1087 | |
cb198164 YO |
1088 | /* |
1089 | =for apidoc Am|U32|SvREADONLY|SV* sv | |
1090 | Returns true if the argument is readonly, otherwise returns false. | |
1091 | Exposed to to perl code via Internals::SvREADONLY(). | |
1092 | ||
1093 | =for apidoc Am|U32|SvREADONLY_on|SV* sv | |
1094 | Mark an object as readonly. Exactly what this means depends on the object | |
1095 | type. Exposed to perl code via Internals::SvREADONLY(). | |
1096 | ||
1097 | =for apidoc Am|U32|SvREADONLY_off|SV* sv | |
1098 | Mark an object as not-readonly. Exactly what this mean depends on the | |
1099 | object type. Exposed to perl code via Internals::SvREADONLY(). | |
1100 | ||
1101 | =cut | |
1102 | */ | |
1103 | ||
a623f893 FC |
1104 | #define SvREADONLY(sv) (SvFLAGS(sv) & (SVf_READONLY|SVf_PROTECT)) |
1105 | #ifdef PERL_CORE | |
1106 | # define SvREADONLY_on(sv) (SvFLAGS(sv) |= (SVf_READONLY|SVf_PROTECT)) | |
1107 | # define SvREADONLY_off(sv) (SvFLAGS(sv) &=~(SVf_READONLY|SVf_PROTECT)) | |
1108 | #else | |
1109 | # define SvREADONLY_on(sv) (SvFLAGS(sv) |= SVf_READONLY) | |
1110 | # define SvREADONLY_off(sv) (SvFLAGS(sv) &= ~SVf_READONLY) | |
1111 | #endif | |
79072805 | 1112 | |
180488f8 | 1113 | #define SvSCREAM(sv) ((SvFLAGS(sv) & (SVp_SCREAM|SVp_POK)) == (SVp_SCREAM|SVp_POK)) |
8990e307 LW |
1114 | #define SvSCREAM_on(sv) (SvFLAGS(sv) |= SVp_SCREAM) |
1115 | #define SvSCREAM_off(sv) (SvFLAGS(sv) &= ~SVp_SCREAM) | |
79072805 | 1116 | |
74e0ddf7 NC |
1117 | #ifndef PERL_CORE |
1118 | # define SvCOMPILED(sv) 0 | |
1119 | # define SvCOMPILED_on(sv) | |
1120 | # define SvCOMPILED_off(sv) | |
1121 | #endif | |
79072805 | 1122 | |
85ffbbb0 | 1123 | |
a5c7cb08 | 1124 | #if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) |
e9726144 | 1125 | # define SvTAIL(sv) ({ const SV *const _svtail = (const SV *)(sv); \ |
654c0d3f RU |
1126 | assert(SvTYPE(_svtail) != SVt_PVAV); \ |
1127 | assert(SvTYPE(_svtail) != SVt_PVHV); \ | |
b4204fb6 | 1128 | assert(!(SvFLAGS(_svtail) & (SVf_NOK|SVp_NOK))); \ |
a5c7cb08 | 1129 | assert(SvVALID(_svtail)); \ |
b4204fb6 | 1130 | ((XPVNV*)SvANY(_svtail))->xnv_u.xnv_bm_tail; \ |
85efc3a5 NC |
1131 | }) |
1132 | #else | |
b4204fb6 | 1133 | # define SvTAIL(_svtail) (((XPVNV*)SvANY(_svtail))->xnv_u.xnv_bm_tail) |
85efc3a5 | 1134 | #endif |
8990e307 | 1135 | |
a5c7cb08 DM |
1136 | /* Does the SV have a Boyer-Moore table attached as magic? |
1137 | * 'VALID' is a poor name, but is kept for historical reasons. */ | |
1138 | #define SvVALID(_svvalid) ( \ | |
4e8879f3 DM |
1139 | SvPOKp(_svvalid) \ |
1140 | && SvSMAGICAL(_svvalid) \ | |
a5c7cb08 DM |
1141 | && SvMAGIC(_svvalid) \ |
1142 | && (SvMAGIC(_svvalid)->mg_type == PERL_MAGIC_bm \ | |
1143 | || mg_find(_svvalid, PERL_MAGIC_bm)) \ | |
1144 | ) | |
1145 | ||
ed6116ce LW |
1146 | #define SvRVx(sv) SvRV(sv) |
1147 | ||
f599b64b | 1148 | #ifdef PERL_DEBUG_COW |
8ed30cc1 DD |
1149 | /* Need -0.0 for SvNVX to preserve IEEE FP "negative zero" because |
1150 | +0.0 + -0.0 => +0.0 but -0.0 + -0.0 => -0.0 */ | |
771ba71a NC |
1151 | # define SvIVX(sv) (0 + ((XPVIV*) SvANY(sv))->xiv_iv) |
1152 | # define SvUVX(sv) (0 + ((XPVUV*) SvANY(sv))->xuv_uv) | |
58430790 | 1153 | # define SvNVX(sv) (-0.0 + ((XPVNV*) SvANY(sv))->xnv_u.xnv_nv) |
ac09da3b | 1154 | # define SvRV(sv) (0 + (sv)->sv_u.svu_rv) |
f19a12a3 | 1155 | # define SvRV_const(sv) (0 + (sv)->sv_u.svu_rv) |
c0e1089a | 1156 | /* Don't test the core XS code yet. */ |
771ba71a | 1157 | # if defined (PERL_CORE) && PERL_DEBUG_COW > 1 |
c7724415 | 1158 | # define SvPVX(sv) (0 + (assert_(!SvREADONLY(sv)) (sv)->sv_u.svu_pv)) |
771ba71a NC |
1159 | # else |
1160 | # define SvPVX(sv) SvPVX_mutable(sv) | |
1161 | # endif | |
771ba71a NC |
1162 | # define SvCUR(sv) (0 + ((XPV*) SvANY(sv))->xpv_cur) |
1163 | # define SvLEN(sv) (0 + ((XPV*) SvANY(sv))->xpv_len) | |
1164 | # define SvEND(sv) ((sv)->sv_u.svu_pv + ((XPV*)SvANY(sv))->xpv_cur) | |
1165 | ||
c7724415 FC |
1166 | # define SvMAGIC(sv) (0 + *(assert_(SvTYPE(sv) >= SVt_PVMG) &((XPVMG*) SvANY(sv))->xmg_u.xmg_magic)) |
1167 | # define SvSTASH(sv) (0 + *(assert_(SvTYPE(sv) >= SVt_PVMG) &((XPVMG*) SvANY(sv))->xmg_stash)) | |
f599b64b | 1168 | #else |
771ba71a NC |
1169 | # define SvLEN(sv) ((XPV*) SvANY(sv))->xpv_len |
1170 | # define SvEND(sv) ((sv)->sv_u.svu_pv + ((XPV*)SvANY(sv))->xpv_cur) | |
1171 | ||
05ef5f8f NC |
1172 | # if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) |
1173 | /* These get expanded inside other macros that already use a variable _sv */ | |
f7877b28 | 1174 | # define SvPVX(sv) \ |
d2c6dc5e | 1175 | (*({ SV *const _svpvx = MUTABLE_SV(sv); \ |
f1fb8741 | 1176 | assert(PL_valid_types_PVX[SvTYPE(_svpvx) & SVt_MASK]); \ |
e5ae200f | 1177 | assert(!isGV_with_GP(_svpvx)); \ |
5bb89d25 NC |
1178 | assert(!(SvTYPE(_svpvx) == SVt_PVIO \ |
1179 | && !(IoFLAGS(_svpvx) & IOf_FAKE_DIRP))); \ | |
e5ae200f | 1180 | &((_svpvx)->sv_u.svu_pv); \ |
f7877b28 | 1181 | })) |
08002bbf | 1182 | # define SvCUR(sv) \ |
b1bc3f34 | 1183 | (*({ const SV *const _svcur = (const SV *)(sv); \ |
8d919b0a FC |
1184 | assert(PL_valid_types_PVX[SvTYPE(_svcur) & SVt_MASK] \ |
1185 | || SvTYPE(_svcur) == SVt_REGEXP); \ | |
e5ae200f | 1186 | assert(!isGV_with_GP(_svcur)); \ |
6f7e8353 NC |
1187 | assert(!(SvTYPE(_svcur) == SVt_PVIO \ |
1188 | && !(IoFLAGS(_svcur) & IOf_FAKE_DIRP))); \ | |
b1bc3f34 | 1189 | &(((XPV*) MUTABLE_PTR(SvANY(_svcur)))->xpv_cur); \ |
08002bbf | 1190 | })) |
05ef5f8f | 1191 | # define SvIVX(sv) \ |
b1bc3f34 | 1192 | (*({ const SV *const _svivx = (const SV *)(sv); \ |
f1fb8741 | 1193 | assert(PL_valid_types_IVX[SvTYPE(_svivx) & SVt_MASK]); \ |
e5ae200f | 1194 | assert(!isGV_with_GP(_svivx)); \ |
b1bc3f34 | 1195 | &(((XPVIV*) MUTABLE_PTR(SvANY(_svivx)))->xiv_iv); \ |
05ef5f8f NC |
1196 | })) |
1197 | # define SvUVX(sv) \ | |
b1bc3f34 | 1198 | (*({ const SV *const _svuvx = (const SV *)(sv); \ |
f1fb8741 | 1199 | assert(PL_valid_types_IVX[SvTYPE(_svuvx) & SVt_MASK]); \ |
e5ae200f | 1200 | assert(!isGV_with_GP(_svuvx)); \ |
b1bc3f34 | 1201 | &(((XPVUV*) MUTABLE_PTR(SvANY(_svuvx)))->xuv_uv); \ |
05ef5f8f NC |
1202 | })) |
1203 | # define SvNVX(sv) \ | |
b1bc3f34 | 1204 | (*({ const SV *const _svnvx = (const SV *)(sv); \ |
f1fb8741 | 1205 | assert(PL_valid_types_NVX[SvTYPE(_svnvx) & SVt_MASK]); \ |
e5ae200f | 1206 | assert(!isGV_with_GP(_svnvx)); \ |
b1bc3f34 | 1207 | &(((XPVNV*) MUTABLE_PTR(SvANY(_svnvx)))->xnv_u.xnv_nv); \ |
05ef5f8f | 1208 | })) |
ac09da3b | 1209 | # define SvRV(sv) \ |
f19a12a3 | 1210 | (*({ SV *const _svrv = MUTABLE_SV(sv); \ |
f1fb8741 | 1211 | assert(PL_valid_types_RV[SvTYPE(_svrv) & SVt_MASK]); \ |
e5ae200f | 1212 | assert(!isGV_with_GP(_svrv)); \ |
6f7e8353 NC |
1213 | assert(!(SvTYPE(_svrv) == SVt_PVIO \ |
1214 | && !(IoFLAGS(_svrv) & IOf_FAKE_DIRP))); \ | |
e5ae200f | 1215 | &((_svrv)->sv_u.svu_rv); \ |
ac09da3b | 1216 | })) |
f19a12a3 MHM |
1217 | # define SvRV_const(sv) \ |
1218 | ({ const SV *const _svrv = (const SV *)(sv); \ | |
f1fb8741 | 1219 | assert(PL_valid_types_RV[SvTYPE(_svrv) & SVt_MASK]); \ |
f19a12a3 | 1220 | assert(!isGV_with_GP(_svrv)); \ |
6f7e8353 NC |
1221 | assert(!(SvTYPE(_svrv) == SVt_PVIO \ |
1222 | && !(IoFLAGS(_svrv) & IOf_FAKE_DIRP))); \ | |
f19a12a3 MHM |
1223 | (_svrv)->sv_u.svu_rv; \ |
1224 | }) | |
05ef5f8f | 1225 | # define SvMAGIC(sv) \ |
b1bc3f34 | 1226 | (*({ const SV *const _svmagic = (const SV *)(sv); \ |
e5ae200f | 1227 | assert(SvTYPE(_svmagic) >= SVt_PVMG); \ |
b1bc3f34 | 1228 | &(((XPVMG*) MUTABLE_PTR(SvANY(_svmagic)))->xmg_u.xmg_magic); \ |
05ef5f8f NC |
1229 | })) |
1230 | # define SvSTASH(sv) \ | |
b1bc3f34 | 1231 | (*({ const SV *const _svstash = (const SV *)(sv); \ |
e5ae200f | 1232 | assert(SvTYPE(_svstash) >= SVt_PVMG); \ |
b1bc3f34 | 1233 | &(((XPVMG*) MUTABLE_PTR(SvANY(_svstash)))->xmg_stash); \ |
05ef5f8f | 1234 | })) |
03687789 | 1235 | # else |
08002bbf NC |
1236 | # define SvPVX(sv) ((sv)->sv_u.svu_pv) |
1237 | # define SvCUR(sv) ((XPV*) SvANY(sv))->xpv_cur | |
05ef5f8f NC |
1238 | # define SvIVX(sv) ((XPVIV*) SvANY(sv))->xiv_iv |
1239 | # define SvUVX(sv) ((XPVUV*) SvANY(sv))->xuv_uv | |
58430790 | 1240 | # define SvNVX(sv) ((XPVNV*) SvANY(sv))->xnv_u.xnv_nv |
ac09da3b | 1241 | # define SvRV(sv) ((sv)->sv_u.svu_rv) |
f19a12a3 | 1242 | # define SvRV_const(sv) (0 + (sv)->sv_u.svu_rv) |
e736a858 | 1243 | # define SvMAGIC(sv) ((XPVMG*) SvANY(sv))->xmg_u.xmg_magic |
771ba71a | 1244 | # define SvSTASH(sv) ((XPVMG*) SvANY(sv))->xmg_stash |
03687789 | 1245 | # endif |
62703e72 NC |
1246 | #endif |
1247 | ||
06c0cc96 | 1248 | #ifndef PERL_POISON |
bb496845 SP |
1249 | /* Given that these two are new, there can't be any existing code using them |
1250 | * as LVALUEs */ | |
06c0cc96 NC |
1251 | # define SvPVX_mutable(sv) (0 + (sv)->sv_u.svu_pv) |
1252 | # define SvPVX_const(sv) ((const char*)(0 + (sv)->sv_u.svu_pv)) | |
1253 | #else | |
1254 | /* Except for the poison code, which uses & to scribble over the pointer after | |
1255 | free() is called. */ | |
1256 | # define SvPVX_mutable(sv) ((sv)->sv_u.svu_pv) | |
1257 | # define SvPVX_const(sv) ((const char*)((sv)->sv_u.svu_pv)) | |
1258 | #endif | |
bb496845 | 1259 | |
62703e72 NC |
1260 | #define SvIVXx(sv) SvIVX(sv) |
1261 | #define SvUVXx(sv) SvUVX(sv) | |
1262 | #define SvNVXx(sv) SvNVX(sv) | |
1263 | #define SvPVXx(sv) SvPVX(sv) | |
1264 | #define SvLENx(sv) SvLEN(sv) | |
1265 | #define SvENDx(sv) ((PL_Sv = (sv)), SvEND(PL_Sv)) | |
1266 | ||
1267 | ||
28e5dec8 JH |
1268 | /* Ask a scalar nicely to try to become an IV, if possible. |
1269 | Not guaranteed to stay returning void */ | |
1270 | /* Macro won't actually call sv_2iv if already IOK */ | |
1271 | #define SvIV_please(sv) \ | |
3ea8bc93 | 1272 | STMT_START {if (!SvIOKp(sv) && (SvFLAGS(sv) & (SVf_NOK|SVf_POK))) \ |
28e5dec8 | 1273 | (void) SvIV(sv); } STMT_END |
6f1401dc | 1274 | #define SvIV_please_nomg(sv) \ |
3ea8bc93 DD |
1275 | (!(SvFLAGS(sv) & (SVf_IOK|SVp_IOK)) && (SvFLAGS(sv) & (SVf_NOK|SVf_POK)) \ |
1276 | ? (sv_2iv_flags(sv, 0), SvIOK(sv)) \ | |
8a68f328 | 1277 | : SvIOK(sv)) |
79072805 | 1278 | #define SvIV_set(sv, val) \ |
f1fb8741 DM |
1279 | STMT_START { \ |
1280 | assert(PL_valid_types_IV_set[SvTYPE(sv) & SVt_MASK]); \ | |
08002bbf | 1281 | assert(!isGV_with_GP(sv)); \ |
b19bbeda | 1282 | (((XPVIV*) SvANY(sv))->xiv_iv = (val)); } STMT_END |
79072805 | 1283 | #define SvNV_set(sv, val) \ |
f1fb8741 DM |
1284 | STMT_START { \ |
1285 | assert(PL_valid_types_NV_set[SvTYPE(sv) & SVt_MASK]); \ | |
08002bbf | 1286 | assert(!isGV_with_GP(sv)); \ |
58430790 | 1287 | (((XPVNV*)SvANY(sv))->xnv_u.xnv_nv = (val)); } STMT_END |
79072805 | 1288 | #define SvPV_set(sv, val) \ |
f1fb8741 DM |
1289 | STMT_START { \ |
1290 | assert(PL_valid_types_PVX[SvTYPE(sv) & SVt_MASK]); \ | |
08002bbf | 1291 | assert(!isGV_with_GP(sv)); \ |
6f7e8353 NC |
1292 | assert(!(SvTYPE(sv) == SVt_PVIO \ |
1293 | && !(IoFLAGS(sv) & IOf_FAKE_DIRP))); \ | |
339049b0 | 1294 | ((sv)->sv_u.svu_pv = (val)); } STMT_END |
607fa7f2 | 1295 | #define SvUV_set(sv, val) \ |
f1fb8741 DM |
1296 | STMT_START { \ |
1297 | assert(PL_valid_types_IV_set[SvTYPE(sv) & SVt_MASK]); \ | |
08002bbf | 1298 | assert(!isGV_with_GP(sv)); \ |
607fa7f2 | 1299 | (((XPVUV*)SvANY(sv))->xuv_uv = (val)); } STMT_END |
b162af07 | 1300 | #define SvRV_set(sv, val) \ |
f1fb8741 DM |
1301 | STMT_START { \ |
1302 | assert(PL_valid_types_RV[SvTYPE(sv) & SVt_MASK]); \ | |
08002bbf | 1303 | assert(!isGV_with_GP(sv)); \ |
6f7e8353 NC |
1304 | assert(!(SvTYPE(sv) == SVt_PVIO \ |
1305 | && !(IoFLAGS(sv) & IOf_FAKE_DIRP))); \ | |
339049b0 | 1306 | ((sv)->sv_u.svu_rv = (val)); } STMT_END |
b162af07 SP |
1307 | #define SvMAGIC_set(sv, val) \ |
1308 | STMT_START { assert(SvTYPE(sv) >= SVt_PVMG); \ | |
e736a858 | 1309 | (((XPVMG*)SvANY(sv))->xmg_u.xmg_magic = (val)); } STMT_END |
b162af07 SP |
1310 | #define SvSTASH_set(sv, val) \ |
1311 | STMT_START { assert(SvTYPE(sv) >= SVt_PVMG); \ | |
1312 | (((XPVMG*) SvANY(sv))->xmg_stash = (val)); } STMT_END | |
79072805 | 1313 | #define SvCUR_set(sv, val) \ |
f1fb8741 | 1314 | STMT_START { \ |
8d919b0a FC |
1315 | assert(PL_valid_types_PVX[SvTYPE(sv) & SVt_MASK] \ |
1316 | || SvTYPE(sv) == SVt_REGEXP); \ | |
08002bbf | 1317 | assert(!isGV_with_GP(sv)); \ |
6f7e8353 NC |
1318 | assert(!(SvTYPE(sv) == SVt_PVIO \ |
1319 | && !(IoFLAGS(sv) & IOf_FAKE_DIRP))); \ | |
b162af07 | 1320 | (((XPV*) SvANY(sv))->xpv_cur = (val)); } STMT_END |
79072805 | 1321 | #define SvLEN_set(sv, val) \ |
f1fb8741 DM |
1322 | STMT_START { \ |
1323 | assert(PL_valid_types_PVX[SvTYPE(sv) & SVt_MASK]); \ | |
f7877b28 | 1324 | assert(!isGV_with_GP(sv)); \ |
6f7e8353 NC |
1325 | assert(!(SvTYPE(sv) == SVt_PVIO \ |
1326 | && !(IoFLAGS(sv) & IOf_FAKE_DIRP))); \ | |
b162af07 | 1327 | (((XPV*) SvANY(sv))->xpv_len = (val)); } STMT_END |
7ae8ee9e NC |
1328 | #define SvEND_set(sv, val) \ |
1329 | STMT_START { assert(SvTYPE(sv) >= SVt_PV); \ | |
3ec35e0f | 1330 | SvCUR_set(sv, (val) - SvPVX(sv)); } STMT_END |
79072805 | 1331 | |
b7e9a5c2 | 1332 | #define SvPV_renew(sv,n) \ |
1da4ca5f NC |
1333 | STMT_START { SvLEN_set(sv, n); \ |
1334 | SvPV_set((sv), (MEM_WRAP_CHECK_(n,char) \ | |
1335 | (char*)saferealloc((Malloc_t)SvPVX(sv), \ | |
1336 | (MEM_SIZE)((n))))); \ | |
1337 | } STMT_END | |
1338 | ||
1339 | #define SvPV_shrink_to_cur(sv) STMT_START { \ | |
1340 | const STRLEN _lEnGtH = SvCUR(sv) + 1; \ | |
1341 | SvPV_renew(sv, _lEnGtH); \ | |
1342 | } STMT_END | |
b7e9a5c2 | 1343 | |
771ba71a NC |
1344 | #define SvPV_free(sv) \ |
1345 | STMT_START { \ | |
1346 | assert(SvTYPE(sv) >= SVt_PV); \ | |
1347 | if (SvLEN(sv)) { \ | |
e537ac38 | 1348 | assert(!SvROK(sv)); \ |
5d9574c1 | 1349 | if(UNLIKELY(SvOOK(sv))) { \ |
69240efd NC |
1350 | STRLEN zok; \ |
1351 | SvOOK_offset(sv, zok); \ | |
1352 | SvPV_set(sv, SvPVX_mutable(sv) - zok); \ | |
771ba71a NC |
1353 | SvFLAGS(sv) &= ~SVf_OOK; \ |
1354 | } \ | |
1355 | Safefree(SvPVX(sv)); \ | |
1356 | } \ | |
1357 | } STMT_END | |
8bd4d4c5 | 1358 | |
43230e26 NC |
1359 | #ifdef PERL_CORE |
1360 | /* Code that crops up in three places to take a scalar and ready it to hold | |
1361 | a reference */ | |
1362 | # define prepare_SV_for_RV(sv) \ | |
1363 | STMT_START { \ | |
1364 | if (SvTYPE(sv) < SVt_PV && SvTYPE(sv) != SVt_IV) \ | |
1365 | sv_upgrade(sv, SVt_IV); \ | |
662f1f9e | 1366 | else if (SvTYPE(sv) >= SVt_PV) { \ |
43230e26 NC |
1367 | SvPV_free(sv); \ |
1368 | SvLEN_set(sv, 0); \ | |
1369 | SvCUR_set(sv, 0); \ | |
1370 | } \ | |
1371 | } STMT_END | |
1372 | #endif | |
373b357f | 1373 | |
cffe132d NC |
1374 | #ifndef PERL_CORE |
1375 | # define BmFLAGS(sv) (SvTAIL(sv) ? FBMcf_TAIL : 0) | |
1376 | #endif | |
6976cee3 | 1377 | |
60c8298a | 1378 | #if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) |
60c8298a | 1379 | # define BmUSEFUL(sv) \ |
b1bc3f34 | 1380 | (*({ SV *const _bmuseful = MUTABLE_SV(sv); \ |
408dc2ec | 1381 | assert(SvTYPE(_bmuseful) >= SVt_PVIV); \ |
e5ae200f | 1382 | assert(SvVALID(_bmuseful)); \ |
408dc2ec NC |
1383 | assert(!SvIOK(_bmuseful)); \ |
1384 | &(((XPVIV*) SvANY(_bmuseful))->xiv_u.xivu_iv); \ | |
8eeaf79a | 1385 | })) |
60c8298a | 1386 | #else |
50c7be83 | 1387 | # define BmUSEFUL(sv) ((XPVIV*) SvANY(sv))->xiv_u.xivu_iv |
b4f6c04b | 1388 | |
60c8298a | 1389 | #endif |
79072805 | 1390 | |
8922e438 FC |
1391 | #ifndef PERL_CORE |
1392 | # define BmRARE(sv) 0 | |
1393 | # define BmPREVIOUS(sv) 0 | |
1394 | #endif | |
1395 | ||
f2da823f | 1396 | #define FmLINES(sv) ((XPVIV*) SvANY(sv))->xiv_iv |
79072805 LW |
1397 | |
1398 | #define LvTYPE(sv) ((XPVLV*) SvANY(sv))->xlv_type | |
1399 | #define LvTARG(sv) ((XPVLV*) SvANY(sv))->xlv_targ | |
1400 | #define LvTARGOFF(sv) ((XPVLV*) SvANY(sv))->xlv_targoff | |
bbfdc870 | 1401 | #define LvSTARGOFF(sv) ((XPVLV*) SvANY(sv))->xlv_targoff_u.xlvu_stargoff |
79072805 | 1402 | #define LvTARGLEN(sv) ((XPVLV*) SvANY(sv))->xlv_targlen |
83f78d1a | 1403 | #define LvFLAGS(sv) ((XPVLV*) SvANY(sv))->xlv_flags |
79072805 | 1404 | |
6f7e8353 | 1405 | #define IoIFP(sv) (sv)->sv_u.svu_fp |
8990e307 LW |
1406 | #define IoOFP(sv) ((XPVIO*) SvANY(sv))->xio_ofp |
1407 | #define IoDIRP(sv) ((XPVIO*) SvANY(sv))->xio_dirp | |
4755096e | 1408 | #define IoANY(sv) ((XPVIO*) SvANY(sv))->xio_any |
c490b21c | 1409 | #define IoLINES(sv) ((XPVIO*) SvANY(sv))->xiv_u.xivu_iv |
8990e307 LW |
1410 | #define IoPAGE(sv) ((XPVIO*) SvANY(sv))->xio_page |
1411 | #define IoPAGE_LEN(sv) ((XPVIO*) SvANY(sv))->xio_page_len | |
1412 | #define IoLINES_LEFT(sv)((XPVIO*) SvANY(sv))->xio_lines_left | |
1413 | #define IoTOP_NAME(sv) ((XPVIO*) SvANY(sv))->xio_top_name | |
1414 | #define IoTOP_GV(sv) ((XPVIO*) SvANY(sv))->xio_top_gv | |
1415 | #define IoFMT_NAME(sv) ((XPVIO*) SvANY(sv))->xio_fmt_name | |
1416 | #define IoFMT_GV(sv) ((XPVIO*) SvANY(sv))->xio_fmt_gv | |
1417 | #define IoBOTTOM_NAME(sv)((XPVIO*) SvANY(sv))->xio_bottom_name | |
1418 | #define IoBOTTOM_GV(sv) ((XPVIO*) SvANY(sv))->xio_bottom_gv | |
8990e307 LW |
1419 | #define IoTYPE(sv) ((XPVIO*) SvANY(sv))->xio_type |
1420 | #define IoFLAGS(sv) ((XPVIO*) SvANY(sv))->xio_flags | |
1421 | ||
50952442 | 1422 | /* IoTYPE(sv) is a single character telling the type of I/O connection. */ |
3b6c1aba JH |
1423 | #define IoTYPE_RDONLY '<' |
1424 | #define IoTYPE_WRONLY '>' | |
1425 | #define IoTYPE_RDWR '+' | |
1426 | #define IoTYPE_APPEND 'a' | |
1427 | #define IoTYPE_PIPE '|' | |
1428 | #define IoTYPE_STD '-' /* stdin or stdout */ | |
1429 | #define IoTYPE_SOCKET 's' | |
1430 | #define IoTYPE_CLOSED ' ' | |
1431 | #define IoTYPE_IMPLICIT 'I' /* stdin or stdout or stderr */ | |
1432 | #define IoTYPE_NUMERIC '#' /* fdopen */ | |
03fcf2fc GS |
1433 | |
1434 | /* | |
954c1994 | 1435 | =for apidoc Am|bool|SvTAINTED|SV* sv |
8554e7a0 | 1436 | Checks to see if an SV is tainted. Returns TRUE if it is, FALSE if |
954c1994 GS |
1437 | not. |
1438 | ||
1439 | =for apidoc Am|void|SvTAINTED_on|SV* sv | |
c55831ac | 1440 | Marks an SV as tainted if tainting is enabled. |
954c1994 GS |
1441 | |
1442 | =for apidoc Am|void|SvTAINTED_off|SV* sv | |
8554e7a0 FC |
1443 | Untaints an SV. Be I<very> careful with this routine, as it short-circuits |
1444 | some of Perl's fundamental security features. XS module authors should not | |
954c1994 | 1445 | use this function unless they fully understand all the implications of |
72d33970 | 1446 | unconditionally untainting the value. Untainting should be done in the |
954c1994 GS |
1447 | standard perl fashion, via a carefully crafted regexp, rather than directly |
1448 | untainting variables. | |
1449 | ||
1450 | =for apidoc Am|void|SvTAINT|SV* sv | |
c98cdb04 FC |
1451 | Taints an SV if tainting is enabled, and if some input to the current |
1452 | expression is tainted--usually a variable, but possibly also implicit | |
1453 | inputs such as locale settings. C<SvTAINT> propagates that taintedness to | |
1454 | the outputs of an expression in a pessimistic fashion; i.e., without paying | |
1455 | attention to precisely which outputs are influenced by which inputs. | |
954c1994 GS |
1456 | |
1457 | =cut | |
1458 | */ | |
1459 | ||
a0714e2c | 1460 | #define sv_taint(sv) sv_magic((sv), NULL, PERL_MAGIC_taint, NULL, 0) |
aae9cea0 | 1461 | |
dc6d7f5c | 1462 | #ifdef NO_TAINT_SUPPORT |
284167a5 S |
1463 | # define SvTAINTED(sv) 0 |
1464 | #else | |
1465 | # define SvTAINTED(sv) (SvMAGICAL(sv) && sv_tainted(sv)) | |
1466 | #endif | |
5d9574c1 DM |
1467 | #define SvTAINTED_on(sv) STMT_START{ if(UNLIKELY(TAINTING_get)){sv_taint(sv);} }STMT_END |
1468 | #define SvTAINTED_off(sv) STMT_START{ if(UNLIKELY(TAINTING_get)){sv_untaint(sv);} }STMT_END | |
bbce6d69 | 1469 | |
c6ee37c5 MB |
1470 | #define SvTAINT(sv) \ |
1471 | STMT_START { \ | |
d48c660d DM |
1472 | assert(TAINTING_get || !TAINT_get); \ |
1473 | if (UNLIKELY(TAINT_get)) \ | |
1474 | SvTAINTED_on(sv); \ | |
c6ee37c5 | 1475 | } STMT_END |
79072805 | 1476 | |
954c1994 GS |
1477 | /* |
1478 | =for apidoc Am|char*|SvPV_force|SV* sv|STRLEN len | |
8bb025ae | 1479 | Like C<SvPV> but will force the SV into containing a string (C<SvPOK>), and |
fd142383 | 1480 | only a string (C<SvPOK_only>), by hook or by crook. You need force if you are |
8bb025ae | 1481 | going to update the C<SvPVX> directly. Processes get magic. |
954c1994 | 1482 | |
fd142383 | 1483 | Note that coercing an arbitrary scalar into a plain PV will potentially |
72d33970 | 1484 | strip useful data from it. For example if the SV was C<SvROK>, then the |
fd142383 DM |
1485 | referent will have its reference count decremented, and the SV itself may |
1486 | be converted to an C<SvPOK> scalar with a string buffer containing a value | |
1487 | such as C<"ARRAY(0x1234)">. | |
1488 | ||
645c22ef | 1489 | =for apidoc Am|char*|SvPV_force_nomg|SV* sv|STRLEN len |
fd142383 | 1490 | Like C<SvPV_force>, but doesn't process get magic. |
645c22ef | 1491 | |
954c1994 | 1492 | =for apidoc Am|char*|SvPV|SV* sv|STRLEN len |
5f08bad4 ST |
1493 | Returns a pointer to the string in the SV, or a stringified form of |
1494 | the SV if the SV does not contain a string. The SV may cache the | |
cfe3322a DG |
1495 | stringified version becoming C<SvPOK>. Handles 'get' magic. The |
1496 | C<len> variable will be set to the length of the string (this is a macro, so | |
fbe13c60 | 1497 | don't use C<&len>). See also C<L</SvPVx>> for a version which guarantees to |
796b6530 | 1498 | evaluate C<sv> only once. |
645c22ef | 1499 | |
fd142383 | 1500 | Note that there is no guarantee that the return value of C<SvPV()> is |
fe02ddb7 | 1501 | equal to C<SvPVX(sv)>, or that C<SvPVX(sv)> contains valid data, or that |
c07def6d | 1502 | successive calls to C<SvPV(sv)> will return the same pointer value each |
72d33970 | 1503 | time. This is due to the way that things like overloading and |
fe02ddb7 | 1504 | Copy-On-Write are handled. In these cases, the return value may point to |
796b6530 | 1505 | a temporary buffer or similar. If you absolutely need the C<SvPVX> field to |
fe02ddb7 | 1506 | be valid (for example, if you intend to write to it), then see |
fbe13c60 | 1507 | C<L</SvPV_force>>. |
fd142383 | 1508 | |
645c22ef | 1509 | =for apidoc Am|char*|SvPVx|SV* sv|STRLEN len |
4ea561bc NC |
1510 | A version of C<SvPV> which guarantees to evaluate C<sv> only once. |
1511 | Only use this if C<sv> is an expression with side effects, otherwise use the | |
b3adf4c0 | 1512 | more efficient C<SvPV>. |
954c1994 | 1513 | |
891f9566 YST |
1514 | =for apidoc Am|char*|SvPV_nomg|SV* sv|STRLEN len |
1515 | Like C<SvPV> but doesn't process magic. | |
1516 | ||
954c1994 | 1517 | =for apidoc Am|char*|SvPV_nolen|SV* sv |
fd142383 | 1518 | Like C<SvPV> but doesn't set a length variable. |
954c1994 | 1519 | |
71eb6d8c TC |
1520 | =for apidoc Am|char*|SvPV_nomg_nolen|SV* sv |
1521 | Like C<SvPV_nolen> but doesn't process magic. | |
1522 | ||
954c1994 | 1523 | =for apidoc Am|IV|SvIV|SV* sv |
04e8f319 P |
1524 | Coerces the given SV to IV and returns it. The returned value in many |
1525 | circumstances will get stored in C<sv>'s IV slot, but not in all cases. (Use | |
1526 | C<L</sv_setiv>> to make sure it does). | |
1527 | ||
1528 | See C<L</SvIVx>> for a version which guarantees to evaluate C<sv> only once. | |
645c22ef | 1529 | |
891f9566 YST |
1530 | =for apidoc Am|IV|SvIV_nomg|SV* sv |
1531 | Like C<SvIV> but doesn't process magic. | |
1532 | ||
645c22ef | 1533 | =for apidoc Am|IV|SvIVx|SV* sv |
04e8f319 P |
1534 | Coerces the given SV to IV and returns it. The returned value in many |
1535 | circumstances will get stored in C<sv>'s IV slot, but not in all cases. (Use | |
1536 | C<L</sv_setiv>> to make sure it does). | |
1537 | ||
1538 | This form guarantees to evaluate C<sv> only once. Only use this if C<sv> is an | |
1539 | expression with side effects, otherwise use the more efficient C<SvIV>. | |
954c1994 GS |
1540 | |
1541 | =for apidoc Am|NV|SvNV|SV* sv | |
04e8f319 P |
1542 | Coerces the given SV to NV and returns it. The returned value in many |
1543 | circumstances will get stored in C<sv>'s NV slot, but not in all cases. (Use | |
1544 | C<L</sv_setnv>> to make sure it does). | |
1545 | ||
1546 | See C<L</SvNVx>> for a version which guarantees to evaluate C<sv> only once. | |
645c22ef | 1547 | |
6f1401dc DM |
1548 | =for apidoc Am|NV|SvNV_nomg|SV* sv |
1549 | Like C<SvNV> but doesn't process magic. | |
1550 | ||
645c22ef | 1551 | =for apidoc Am|NV|SvNVx|SV* sv |
04e8f319 P |
1552 | Coerces the given SV to NV and returns it. The returned value in many |
1553 | circumstances will get stored in C<sv>'s NV slot, but not in all cases. (Use | |
1554 | C<L</sv_setnv>> to make sure it does). | |
1555 | ||
1556 | This form guarantees to evaluate C<sv> only once. Only use this if C<sv> is an | |
1557 | expression with side effects, otherwise use the more efficient C<SvNV>. | |
954c1994 GS |
1558 | |
1559 | =for apidoc Am|UV|SvUV|SV* sv | |
04e8f319 P |
1560 | Coerces the given SV to UV and returns it. The returned value in many |
1561 | circumstances will get stored in C<sv>'s UV slot, but not in all cases. (Use | |
1562 | C<L</sv_setuv>> to make sure it does). | |
1563 | ||
1564 | See C<L</SvUVx>> for a version which guarantees to evaluate C<sv> only once. | |
645c22ef | 1565 | |
891f9566 YST |
1566 | =for apidoc Am|UV|SvUV_nomg|SV* sv |
1567 | Like C<SvUV> but doesn't process magic. | |
1568 | ||
645c22ef | 1569 | =for apidoc Am|UV|SvUVx|SV* sv |
04e8f319 P |
1570 | Coerces the given SV to UV and returns it. The returned value in many |
1571 | circumstances will get stored in C<sv>'s UV slot, but not in all cases. (Use | |
1572 | C<L</sv_setuv>> to make sure it does). | |
1573 | ||
1574 | This form guarantees to evaluate C<sv> only once. Only use this if C<sv> is an | |
1575 | expression with side effects, otherwise use the more efficient C<SvUV>. | |
954c1994 GS |
1576 | |
1577 | =for apidoc Am|bool|SvTRUE|SV* sv | |
1578 | Returns a boolean indicating whether Perl would evaluate the SV as true or | |
796b6530 KW |
1579 | false. See C<L</SvOK>> for a defined/undefined test. Handles 'get' magic |
1580 | unless the scalar is already C<SvPOK>, C<SvIOK> or C<SvNOK> (the public, not the | |
06c841cf FC |
1581 | private flags). |
1582 | ||
1583 | =for apidoc Am|bool|SvTRUE_nomg|SV* sv | |
1584 | Returns a boolean indicating whether Perl would evaluate the SV as true or | |
796b6530 | 1585 | false. See C<L</SvOK>> for a defined/undefined test. Does not handle 'get' magic. |
954c1994 | 1586 | |
645c22ef | 1587 | =for apidoc Am|char*|SvPVutf8_force|SV* sv|STRLEN len |
4a4088c4 | 1588 | Like C<SvPV_force>, but converts C<sv> to UTF-8 first if necessary. |
645c22ef DM |
1589 | |
1590 | =for apidoc Am|char*|SvPVutf8|SV* sv|STRLEN len | |
4a4088c4 | 1591 | Like C<SvPV>, but converts C<sv> to UTF-8 first if necessary. |
645c22ef | 1592 | |
b70b15d2 | 1593 | =for apidoc Am|char*|SvPVutf8_nolen|SV* sv |
4a4088c4 | 1594 | Like C<SvPV_nolen>, but converts C<sv> to UTF-8 first if necessary. |
645c22ef DM |
1595 | |
1596 | =for apidoc Am|char*|SvPVbyte_force|SV* sv|STRLEN len | |
796b6530 | 1597 | Like C<SvPV_force>, but converts C<sv> to byte representation first if necessary. |
645c22ef DM |
1598 | |
1599 | =for apidoc Am|char*|SvPVbyte|SV* sv|STRLEN len | |
796b6530 | 1600 | Like C<SvPV>, but converts C<sv> to byte representation first if necessary. |
645c22ef | 1601 | |
b70b15d2 | 1602 | =for apidoc Am|char*|SvPVbyte_nolen|SV* sv |
796b6530 | 1603 | Like C<SvPV_nolen>, but converts C<sv> to byte representation first if necessary. |
645c22ef DM |
1604 | |
1605 | =for apidoc Am|char*|SvPVutf8x_force|SV* sv|STRLEN len | |
4a4088c4 | 1606 | Like C<SvPV_force>, but converts C<sv> to UTF-8 first if necessary. |
796b6530 | 1607 | Guarantees to evaluate C<sv> only once; use the more efficient C<SvPVutf8_force> |
645c22ef DM |
1608 | otherwise. |
1609 | ||
1610 | =for apidoc Am|char*|SvPVutf8x|SV* sv|STRLEN len | |
4a4088c4 | 1611 | Like C<SvPV>, but converts C<sv> to UTF-8 first if necessary. |
796b6530 | 1612 | Guarantees to evaluate C<sv> only once; use the more efficient C<SvPVutf8> |
645c22ef DM |
1613 | otherwise. |
1614 | ||
1615 | =for apidoc Am|char*|SvPVbytex_force|SV* sv|STRLEN len | |
796b6530 KW |
1616 | Like C<SvPV_force>, but converts C<sv> to byte representation first if necessary. |
1617 | Guarantees to evaluate C<sv> only once; use the more efficient C<SvPVbyte_force> | |
645c22ef DM |
1618 | otherwise. |
1619 | ||
1620 | =for apidoc Am|char*|SvPVbytex|SV* sv|STRLEN len | |
796b6530 KW |
1621 | Like C<SvPV>, but converts C<sv> to byte representation first if necessary. |
1622 | Guarantees to evaluate C<sv> only once; use the more efficient C<SvPVbyte> | |
645c22ef DM |
1623 | otherwise. |
1624 | ||
df8dcb28 DD |
1625 | =for apidoc Am|U32|SvIsCOW|SV* sv |
1626 | Returns a U32 value indicating whether the SV is Copy-On-Write (either shared | |
19dbb8f1 | 1627 | hash key scalars, or full Copy On Write scalars if 5.9.0 is configured for |
8554e7a0 | 1628 | COW). |
19dbb8f1 NC |
1629 | |
1630 | =for apidoc Am|bool|SvIsCOW_shared_hash|SV* sv | |
1631 | Returns a boolean indicating whether the SV is Copy-On-Write shared hash key | |
1632 | scalar. | |
645c22ef | 1633 | |
0f76ff59 MHM |
1634 | =for apidoc Am|void|sv_catpvn_nomg|SV* sv|const char* ptr|STRLEN len |
1635 | Like C<sv_catpvn> but doesn't process magic. | |
1636 | ||
9dcc53ea Z |
1637 | =for apidoc Am|void|sv_catpv_nomg|SV* sv|const char* ptr |
1638 | Like C<sv_catpv> but doesn't process magic. | |
1639 | ||
0f76ff59 MHM |
1640 | =for apidoc Am|void|sv_setsv_nomg|SV* dsv|SV* ssv |
1641 | Like C<sv_setsv> but doesn't process magic. | |
1642 | ||
1643 | =for apidoc Am|void|sv_catsv_nomg|SV* dsv|SV* ssv | |
1644 | Like C<sv_catsv> but doesn't process magic. | |
1645 | ||
dc960812 SP |
1646 | =for apidoc Amdb|STRLEN|sv_utf8_upgrade_nomg|NN SV *sv |
1647 | ||
796b6530 | 1648 | Like C<sv_utf8_upgrade>, but doesn't do magic on C<sv>. |
dc960812 | 1649 | |
954c1994 GS |
1650 | =cut |
1651 | */ | |
1652 | ||
25da4f38 | 1653 | /* Let us hope that bitmaps for UV and IV are the same */ |
4bac9ae4 CS |
1654 | #define SvIV(sv) (SvIOK_nog(sv) ? SvIVX(sv) : sv_2iv(sv)) |
1655 | #define SvUV(sv) (SvUOK_nog(sv) ? SvUVX(sv) : sv_2uv(sv)) | |
1656 | #define SvNV(sv) (SvNOK_nog(sv) ? SvNVX(sv) : sv_2nv(sv)) | |
79072805 | 1657 | |
891f9566 YST |
1658 | #define SvIV_nomg(sv) (SvIOK(sv) ? SvIVX(sv) : sv_2iv_flags(sv, 0)) |
1659 | #define SvUV_nomg(sv) (SvIOK(sv) ? SvUVX(sv) : sv_2uv_flags(sv, 0)) | |
6f1401dc | 1660 | #define SvNV_nomg(sv) (SvNOK(sv) ? SvNVX(sv) : sv_2nv_flags(sv, 0)) |
891f9566 | 1661 | |
baca2b92 | 1662 | /* ----*/ |
8d6d96c1 | 1663 | |
4bac9ae4 CS |
1664 | #define SvPV(sv, lp) SvPV_flags(sv, lp, SV_GMAGIC) |
1665 | #define SvPV_const(sv, lp) SvPV_flags_const(sv, lp, SV_GMAGIC) | |
44d22300 | 1666 | #define SvPV_mutable(sv, lp) SvPV_flags_mutable(sv, lp, SV_GMAGIC) |
8d6d96c1 | 1667 | |
8d6d96c1 | 1668 | #define SvPV_flags(sv, lp, flags) \ |
4bac9ae4 | 1669 | (SvPOK_nog(sv) \ |
8d6d96c1 | 1670 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pv_flags(sv, &lp, flags)) |
32a5c6ec | 1671 | #define SvPV_flags_const(sv, lp, flags) \ |
4bac9ae4 | 1672 | (SvPOK_nog(sv) \ |
32a5c6ec | 1673 | ? ((lp = SvCUR(sv)), SvPVX_const(sv)) : \ |
c77ed9ca | 1674 | (const char*) sv_2pv_flags(sv, &lp, (flags|SV_CONST_RETURN))) |
2596d9fe | 1675 | #define SvPV_flags_const_nolen(sv, flags) \ |
4bac9ae4 | 1676 | (SvPOK_nog(sv) \ |
2596d9fe | 1677 | ? SvPVX_const(sv) : \ |
c77ed9ca | 1678 | (const char*) sv_2pv_flags(sv, 0, (flags|SV_CONST_RETURN))) |
44d22300 | 1679 | #define SvPV_flags_mutable(sv, lp, flags) \ |
4bac9ae4 | 1680 | (SvPOK_nog(sv) \ |
44d22300 | 1681 | ? ((lp = SvCUR(sv)), SvPVX_mutable(sv)) : \ |
c77ed9ca | 1682 | sv_2pv_flags(sv, &lp, (flags|SV_MUTABLE_RETURN))) |
79072805 | 1683 | |
8d6d96c1 | 1684 | #define SvPV_force(sv, lp) SvPV_force_flags(sv, lp, SV_GMAGIC) |
13c5b33c | 1685 | #define SvPV_force_nolen(sv) SvPV_force_flags_nolen(sv, SV_GMAGIC) |
32a5c6ec | 1686 | #define SvPV_force_mutable(sv, lp) SvPV_force_flags_mutable(sv, lp, SV_GMAGIC) |
baca2b92 | 1687 | |
8d6d96c1 | 1688 | #define SvPV_force_nomg(sv, lp) SvPV_force_flags(sv, lp, 0) |
2596d9fe | 1689 | #define SvPV_force_nomg_nolen(sv) SvPV_force_flags_nolen(sv, 0) |
8d6d96c1 | 1690 | |
8d6d96c1 | 1691 | #define SvPV_force_flags(sv, lp, flags) \ |
8bb025ae | 1692 | (SvPOK_pure_nogthink(sv) \ |
4bac9ae4 CS |
1693 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvn_force_flags(sv, &lp, flags)) |
1694 | ||
13c5b33c | 1695 | #define SvPV_force_flags_nolen(sv, flags) \ |
8bb025ae | 1696 | (SvPOK_pure_nogthink(sv) \ |
4bac9ae4 CS |
1697 | ? SvPVX(sv) : sv_pvn_force_flags(sv, 0, flags)) |
1698 | ||
32a5c6ec | 1699 | #define SvPV_force_flags_mutable(sv, lp, flags) \ |
8bb025ae | 1700 | (SvPOK_pure_nogthink(sv) \ |
4bac9ae4 | 1701 | ? ((lp = SvCUR(sv)), SvPVX_mutable(sv)) \ |
32a5c6ec | 1702 | : sv_pvn_force_flags(sv, &lp, flags|SV_MUTABLE_RETURN)) |
a0d0e21e | 1703 | |
1fa8b10d | 1704 | #define SvPV_nolen(sv) \ |
4bac9ae4 | 1705 | (SvPOK_nog(sv) \ |
dafda6d1 | 1706 | ? SvPVX(sv) : sv_2pv_flags(sv, 0, SV_GMAGIC)) |
70401c6b | 1707 | |
0334097d | 1708 | /* "_nomg" in these defines means no mg_get() */ |
71eb6d8c | 1709 | #define SvPV_nomg_nolen(sv) \ |
4bac9ae4 | 1710 | (SvPOK_nog(sv) \ |
71eb6d8c TC |
1711 | ? SvPVX(sv) : sv_2pv_flags(sv, 0, 0)) |
1712 | ||
9ce348e8 | 1713 | #define SvPV_nolen_const(sv) \ |
4bac9ae4 | 1714 | (SvPOK_nog(sv) \ |
9ce348e8 NC |
1715 | ? SvPVX_const(sv) : sv_2pv_flags(sv, 0, SV_GMAGIC|SV_CONST_RETURN)) |
1716 | ||
baca2b92 | 1717 | #define SvPV_nomg(sv, lp) SvPV_flags(sv, lp, 0) |
9ce348e8 | 1718 | #define SvPV_nomg_const(sv, lp) SvPV_flags_const(sv, lp, 0) |
2596d9fe | 1719 | #define SvPV_nomg_const_nolen(sv) SvPV_flags_const_nolen(sv, 0) |
5bc28da9 | 1720 | |
baca2b92 | 1721 | /* ----*/ |
70401c6b | 1722 | |
5bc28da9 | 1723 | #define SvPVutf8(sv, lp) \ |
4bac9ae4 | 1724 | (SvPOK_utf8_nog(sv) \ |
5bc28da9 | 1725 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pvutf8(sv, &lp)) |
70401c6b | 1726 | |
5bc28da9 | 1727 | #define SvPVutf8_force(sv, lp) \ |
8bb025ae | 1728 | (SvPOK_utf8_pure_nogthink(sv) \ |
5bc28da9 NIS |
1729 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvutf8n_force(sv, &lp)) |
1730 | ||
5bc28da9 | 1731 | #define SvPVutf8_nolen(sv) \ |
4bac9ae4 | 1732 | (SvPOK_utf8_nog(sv) \ |
dafda6d1 | 1733 | ? SvPVX(sv) : sv_2pvutf8(sv, 0)) |
70401c6b | 1734 | |
baca2b92 DM |
1735 | /* ----*/ |
1736 | ||
5bc28da9 | 1737 | #define SvPVbyte(sv, lp) \ |
4bac9ae4 | 1738 | (SvPOK_byte_nog(sv) \ |
5bc28da9 | 1739 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pvbyte(sv, &lp)) |
70401c6b | 1740 | |
5bc28da9 | 1741 | #define SvPVbyte_force(sv, lp) \ |
8bb025ae | 1742 | (SvPOK_byte_pure_nogthink(sv) \ |
a7ec4e2e | 1743 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvbyten_force(sv, &lp)) |
5bc28da9 | 1744 | |
5bc28da9 | 1745 | #define SvPVbyte_nolen(sv) \ |
4bac9ae4 | 1746 | (SvPOK_byte_nog(sv) \ |
dafda6d1 | 1747 | ? SvPVX(sv) : sv_2pvbyte(sv, 0)) |
70401c6b | 1748 | |
baca2b92 DM |
1749 | |
1750 | /* define FOOx(): idempotent versions of FOO(). If possible, use a local | |
1751 | * var to evaluate the arg once; failing that, use a global if possible; | |
1752 | * failing that, call a function to do the work | |
1753 | */ | |
1754 | ||
1755 | #define SvPVx_force(sv, lp) sv_pvn_force(sv, &lp) | |
1756 | #define SvPVutf8x_force(sv, lp) sv_pvutf8n_force(sv, &lp) | |
1757 | #define SvPVbytex_force(sv, lp) sv_pvbyten_force(sv, &lp) | |
1758 | ||
5d9574c1 DM |
1759 | #define SvTRUE(sv) (LIKELY(sv) && (UNLIKELY(SvGMAGICAL(sv)) ? sv_2bool(sv) : SvTRUE_common(sv, sv_2bool_nomg(sv)))) |
1760 | #define SvTRUE_nomg(sv) (LIKELY(sv) && ( SvTRUE_common(sv, sv_2bool_nomg(sv)))) | |
1761 | #define SvTRUE_NN(sv) (UNLIKELY(SvGMAGICAL(sv)) ? sv_2bool(sv) : SvTRUE_common(sv, sv_2bool_nomg(sv))) | |
716ae3b0 | 1762 | #define SvTRUE_nomg_NN(sv) ( SvTRUE_common(sv, sv_2bool_nomg(sv))) |
4bac9ae4 CS |
1763 | #define SvTRUE_common(sv,fallback) ( \ |
1764 | !SvOK(sv) \ | |
1765 | ? 0 \ | |
762dbf22 FC |
1766 | : SvPOK(sv) \ |
1767 | ? SvPVXtrue(sv) \ | |
1768 | : (SvFLAGS(sv) & (SVf_IOK|SVf_NOK)) \ | |
1769 | ? ( (SvIOK(sv) && SvIVX(sv) != 0) \ | |
659c4b96 | 1770 | || (SvNOK(sv) && SvNVX(sv) != 0.0)) \ |
4bac9ae4 CS |
1771 | : (fallback)) |
1772 | ||
5dc8bdac | 1773 | #if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) |
baca2b92 | 1774 | |
b1bc3f34 NC |
1775 | # define SvIVx(sv) ({SV *_sv = MUTABLE_SV(sv); SvIV(_sv); }) |
1776 | # define SvUVx(sv) ({SV *_sv = MUTABLE_SV(sv); SvUV(_sv); }) | |
1777 | # define SvNVx(sv) ({SV *_sv = MUTABLE_SV(sv); SvNV(_sv); }) | |
3de3296f | 1778 | # define SvPVx(sv, lp) ({SV *_sv = (sv); SvPV(_sv, lp); }) |
32a5c6ec | 1779 | # define SvPVx_const(sv, lp) ({SV *_sv = (sv); SvPV_const(_sv, lp); }) |
002e4c74 | 1780 | # define SvPVx_nolen(sv) ({SV *_sv = (sv); SvPV_nolen(_sv); }) |
9ce348e8 | 1781 | # define SvPVx_nolen_const(sv) ({SV *_sv = (sv); SvPV_nolen_const(_sv); }) |
3de3296f AE |
1782 | # define SvPVutf8x(sv, lp) ({SV *_sv = (sv); SvPVutf8(_sv, lp); }) |
1783 | # define SvPVbytex(sv, lp) ({SV *_sv = (sv); SvPVbyte(_sv, lp); }) | |
002e4c74 | 1784 | # define SvPVbytex_nolen(sv) ({SV *_sv = (sv); SvPVbyte_nolen(_sv); }) |
4bac9ae4 CS |
1785 | # define SvTRUEx(sv) ({SV *_sv = (sv); SvTRUE(_sv); }) |
1786 | # define SvTRUEx_nomg(sv) ({SV *_sv = (sv); SvTRUE_nomg(_sv); }) | |
baca2b92 | 1787 | |
a80f87c4 | 1788 | #else /* __GNUC__ */ |
baca2b92 | 1789 | |
a80f87c4 GS |
1790 | /* These inlined macros use globals, which will require a thread |
1791 | * declaration in user code, so we avoid them under threads */ | |
1792 | ||
3db8f154 MB |
1793 | # define SvIVx(sv) ((PL_Sv = (sv)), SvIV(PL_Sv)) |
1794 | # define SvUVx(sv) ((PL_Sv = (sv)), SvUV(PL_Sv)) | |
1795 | # define SvNVx(sv) ((PL_Sv = (sv)), SvNV(PL_Sv)) | |
1796 | # define SvPVx(sv, lp) ((PL_Sv = (sv)), SvPV(PL_Sv, lp)) | |
32a5c6ec | 1797 | # define SvPVx_const(sv, lp) ((PL_Sv = (sv)), SvPV_const(PL_Sv, lp)) |
002e4c74 | 1798 | # define SvPVx_nolen(sv) ((PL_Sv = (sv)), SvPV_nolen(PL_Sv)) |
5f1478c3 | 1799 | # define SvPVx_nolen_const(sv) ((PL_Sv = (sv)), SvPV_nolen_const(PL_Sv)) |
3db8f154 MB |
1800 | # define SvPVutf8x(sv, lp) ((PL_Sv = (sv)), SvPVutf8(PL_Sv, lp)) |
1801 | # define SvPVbytex(sv, lp) ((PL_Sv = (sv)), SvPVbyte(PL_Sv, lp)) | |
002e4c74 | 1802 | # define SvPVbytex_nolen(sv) ((PL_Sv = (sv)), SvPVbyte_nolen(PL_Sv)) |
4bac9ae4 CS |
1803 | # define SvTRUEx(sv) ((PL_Sv = (sv)), SvTRUE(PL_Sv)) |
1804 | # define SvTRUEx_nomg(sv) ((PL_Sv = (sv)), SvTRUE_nomg(PL_Sv)) | |
baca2b92 DM |
1805 | #endif /* __GNU__ */ |
1806 | ||
630b72b0 DD |
1807 | #define SvPVXtrue(sv) ( \ |
1808 | ((XPV*)SvANY((sv))) \ | |
1809 | && ( \ | |
1810 | ((XPV*)SvANY((sv)))->xpv_cur > 1 \ | |
1811 | || ( \ | |
1812 | ((XPV*)SvANY((sv)))->xpv_cur \ | |
1813 | && *(sv)->sv_u.svu_pv != '0' \ | |
1814 | ) \ | |
1815 | ) \ | |
1816 | ) | |
1817 | ||
e3918bb7 FC |
1818 | #define SvIsCOW(sv) (SvFLAGS(sv) & SVf_IsCOW) |
1819 | #define SvIsCOW_on(sv) (SvFLAGS(sv) |= SVf_IsCOW) | |
1820 | #define SvIsCOW_off(sv) (SvFLAGS(sv) &= ~SVf_IsCOW) | |
46187eeb | 1821 | #define SvIsCOW_shared_hash(sv) (SvIsCOW(sv) && SvLEN(sv) == 0) |
baca2b92 | 1822 | |
bdd68bc3 NC |
1823 | #define SvSHARED_HEK_FROM_PV(pvx) \ |
1824 | ((struct hek*)(pvx - STRUCT_OFFSET(struct hek, hek_key))) | |
0a356b31 | 1825 | #define SvSHARED_HASH(sv) (0 + SvSHARED_HEK_FROM_PV(SvPVX_const(sv))->hek_hash) |
c158a4fd | 1826 | |
baca2b92 | 1827 | /* flag values for sv_*_flags functions */ |
5dfbfbd5 | 1828 | #define SV_UTF8_NO_ENCODING 0 /* No longer used */ |
baca2b92 DM |
1829 | #define SV_IMMEDIATE_UNREF 1 |
1830 | #define SV_GMAGIC 2 | |
765f542d | 1831 | #define SV_COW_DROP_PV 4 |
5fcdf167 | 1832 | #define SV_NOSTEAL 16 |
32a5c6ec NC |
1833 | #define SV_CONST_RETURN 32 |
1834 | #define SV_MUTABLE_RETURN 64 | |
bddd5118 | 1835 | #define SV_SMAGIC 128 |
c1c21316 | 1836 | #define SV_HAS_TRAILING_NUL 256 |
34482cd6 | 1837 | #define SV_COW_SHARED_HASH_KEYS 512 |
cb23d5b1 | 1838 | /* This one is only enabled for PERL_OLD_COPY_ON_WRITE */ |
b7adcee4 FC |
1839 | /* XXX This flag actually enabled for any COW. But it appears not to do |
1840 | anything. Can we just remove it? Or will it serve some future | |
1841 | purpose. */ | |
cb23d5b1 | 1842 | #define SV_COW_OTHER_PVS 1024 |
9f621bb0 NC |
1843 | /* Make sv_2pv_flags return NULL if something is undefined. */ |
1844 | #define SV_UNDEF_RETURNS_NULL 2048 | |
b3ab6785 KW |
1845 | /* Tell sv_utf8_upgrade() to not check to see if an upgrade is really needed. |
1846 | * This is used when the caller has already determined it is, and avoids | |
1847 | * redundant work */ | |
1848 | #define SV_FORCE_UTF8_UPGRADE 4096 | |
aee036bb DM |
1849 | /* if (after resolving magic etc), the SV is found to be overloaded, |
1850 | * don't call the overload magic, just return as-is */ | |
1851 | #define SV_SKIP_OVERLOAD 8192 | |
20c88bf7 FC |
1852 | #define SV_CATBYTES 16384 |
1853 | #define SV_CATUTF8 32768 | |
34482cd6 NC |
1854 | |
1855 | /* The core is safe for this COW optimisation. XS code on CPAN may not be. | |
1856 | So only default to doing the COW setup if we're in the core. | |
1857 | */ | |
1858 | #ifdef PERL_CORE | |
1859 | # ifndef SV_DO_COW_SVSETSV | |
cb23d5b1 | 1860 | # define SV_DO_COW_SVSETSV SV_COW_SHARED_HASH_KEYS|SV_COW_OTHER_PVS |
34482cd6 NC |
1861 | # endif |
1862 | #endif | |
1863 | ||
1864 | #ifndef SV_DO_COW_SVSETSV | |
1865 | # define SV_DO_COW_SVSETSV 0 | |
1866 | #endif | |
1867 | ||
765f542d | 1868 | |
5abc721d NC |
1869 | #define sv_unref(sv) sv_unref_flags(sv, 0) |
1870 | #define sv_force_normal(sv) sv_force_normal_flags(sv, 0) | |
47518d95 NC |
1871 | #define sv_usepvn(sv, p, l) sv_usepvn_flags(sv, p, l, 0) |
1872 | #define sv_usepvn_mg(sv, p, l) sv_usepvn_flags(sv, p, l, SV_SMAGIC) | |
174c73e3 | 1873 | |
46187eeb NC |
1874 | /* We are about to replace the SV's current value. So if it's copy on write |
1875 | we need to normalise it. Use the SV_COW_DROP_PV flag hint to say that | |
1876 | the value is about to get thrown away, so drop the PV rather than go to | |
1877 | the effort of making a read-write copy only for it to get immediately | |
1878 | discarded. */ | |
765f542d NC |
1879 | |
1880 | #define SV_CHECK_THINKFIRST_COW_DROP(sv) if (SvTHINKFIRST(sv)) \ | |
1881 | sv_force_normal_flags(sv, SV_COW_DROP_PV) | |
46187eeb | 1882 | |
93c10d60 | 1883 | #ifdef PERL_COPY_ON_WRITE |
db2c6cb3 FC |
1884 | # define SvCANCOW(sv) \ |
1885 | (SvIsCOW(sv) \ | |
1886 | ? SvLEN(sv) ? CowREFCNT(sv) != SV_COW_REFCNT_MAX : 1 \ | |
1887 | : (SvFLAGS(sv) & CAN_COW_MASK) == CAN_COW_FLAGS \ | |
1888 | && SvCUR(sv)+1 < SvLEN(sv)) | |
1889 | /* Note: To allow 256 COW "copies", a refcnt of 0 means 1. */ | |
1890 | # define CowREFCNT(sv) (*(U8 *)(SvPVX(sv)+SvLEN(sv)-1)) | |
1891 | # define SV_COW_REFCNT_MAX ((1 << sizeof(U8)*8) - 1) | |
f7a8268c | 1892 | # define CAN_COW_MASK (SVf_POK|SVf_ROK|SVp_POK|SVf_FAKE| \ |
a623f893 | 1893 | SVf_OOK|SVf_BREAK|SVf_READONLY|SVf_PROTECT) |
b7adcee4 | 1894 | #endif |
ed252734 | 1895 | |
ed252734 NC |
1896 | #define CAN_COW_FLAGS (SVp_POK|SVf_POK) |
1897 | ||
765f542d NC |
1898 | #define SV_CHECK_THINKFIRST(sv) if (SvTHINKFIRST(sv)) \ |
1899 | sv_force_normal_flags(sv, 0) | |
1900 | ||
1901 | ||
baca2b92 DM |
1902 | /* all these 'functions' are now just macros */ |
1903 | ||
1904 | #define sv_pv(sv) SvPV_nolen(sv) | |
1905 | #define sv_pvutf8(sv) SvPVutf8_nolen(sv) | |
1906 | #define sv_pvbyte(sv) SvPVbyte_nolen(sv) | |
1907 | ||
1908 | #define sv_pvn_force_nomg(sv, lp) sv_pvn_force_flags(sv, lp, 0) | |
b3ab6785 | 1909 | #define sv_utf8_upgrade_flags(sv, flags) sv_utf8_upgrade_flags_grow(sv, flags, 0) |
baca2b92 DM |
1910 | #define sv_utf8_upgrade_nomg(sv) sv_utf8_upgrade_flags(sv, 0) |
1911 | #define sv_catpvn_nomg(dsv, sstr, slen) sv_catpvn_flags(dsv, sstr, slen, 0) | |
9dcc53ea | 1912 | #define sv_catpv_nomg(dsv, sstr) sv_catpv_flags(dsv, sstr, 0) |
34482cd6 NC |
1913 | #define sv_setsv(dsv, ssv) \ |
1914 | sv_setsv_flags(dsv, ssv, SV_GMAGIC|SV_DO_COW_SVSETSV) | |
1915 | #define sv_setsv_nomg(dsv, ssv) sv_setsv_flags(dsv, ssv, SV_DO_COW_SVSETSV) | |
baca2b92 DM |
1916 | #define sv_catsv(dsv, ssv) sv_catsv_flags(dsv, ssv, SV_GMAGIC) |
1917 | #define sv_catsv_nomg(dsv, ssv) sv_catsv_flags(dsv, ssv, 0) | |
b347df82 | 1918 | #define sv_catsv_mg(dsv, ssv) sv_catsv_flags(dsv, ssv, SV_GMAGIC|SV_SMAGIC) |
baca2b92 | 1919 | #define sv_catpvn(dsv, sstr, slen) sv_catpvn_flags(dsv, sstr, slen, SV_GMAGIC) |
4bac9ae4 CS |
1920 | #define sv_catpvn_mg(sv, sstr, slen) sv_catpvn_flags(sv, sstr, slen, SV_GMAGIC|SV_SMAGIC); |
1921 | #define sv_copypv(dsv, ssv) sv_copypv_flags(dsv, ssv, SV_GMAGIC) | |
1922 | #define sv_copypv_nomg(dsv, ssv) sv_copypv_flags(dsv, ssv, 0) | |
baca2b92 | 1923 | #define sv_2pv(sv, lp) sv_2pv_flags(sv, lp, SV_GMAGIC) |
cb2f1b7b NC |
1924 | #define sv_2pv_nolen(sv) sv_2pv(sv, 0) |
1925 | #define sv_2pvbyte_nolen(sv) sv_2pvbyte(sv, 0) | |
1926 | #define sv_2pvutf8_nolen(sv) sv_2pvutf8(sv, 0) | |
baca2b92 DM |
1927 | #define sv_2pv_nomg(sv, lp) sv_2pv_flags(sv, lp, 0) |
1928 | #define sv_pvn_force(sv, lp) sv_pvn_force_flags(sv, lp, SV_GMAGIC) | |
1929 | #define sv_utf8_upgrade(sv) sv_utf8_upgrade_flags(sv, SV_GMAGIC) | |
891f9566 YST |
1930 | #define sv_2iv(sv) sv_2iv_flags(sv, SV_GMAGIC) |
1931 | #define sv_2uv(sv) sv_2uv_flags(sv, SV_GMAGIC) | |
39d5de13 | 1932 | #define sv_2nv(sv) sv_2nv_flags(sv, SV_GMAGIC) |
078504b2 | 1933 | #define sv_eq(sv1, sv2) sv_eq_flags(sv1, sv2, SV_GMAGIC) |
e8c9c9d4 NC |
1934 | #define sv_cmp(sv1, sv2) sv_cmp_flags(sv1, sv2, SV_GMAGIC) |
1935 | #define sv_cmp_locale(sv1, sv2) sv_cmp_locale_flags(sv1, sv2, SV_GMAGIC) | |
078504b2 | 1936 | #define sv_collxfrm(sv, nxp) sv_cmp_flags(sv, nxp, SV_GMAGIC) |
06c841cf | 1937 | #define sv_2bool(sv) sv_2bool_flags(sv, SV_GMAGIC) |
4bac9ae4 | 1938 | #define sv_2bool_nomg(sv) sv_2bool_flags(sv, 0) |
84335ee9 NC |
1939 | #define sv_insert(bigstr, offset, len, little, littlelen) \ |
1940 | Perl_sv_insert_flags(aTHX_ (bigstr),(offset), (len), (little), \ | |
1941 | (littlelen), SV_GMAGIC) | |
108cb980 FC |
1942 | #define sv_mortalcopy(sv) \ |
1943 | Perl_sv_mortalcopy_flags(aTHX_ sv, SV_GMAGIC|SV_DO_COW_SVSETSV) | |
f34d8cdd FC |
1944 | #define sv_cathek(sv,hek) \ |
1945 | STMT_START { \ | |
1946 | HEK * const bmxk = hek; \ | |
1947 | sv_catpvn_flags(sv, HEK_KEY(bmxk), HEK_LEN(bmxk), \ | |
1948 | HEK_UTF8(bmxk) ? SV_CATUTF8 : SV_CATBYTES); \ | |
1949 | } STMT_END | |
baca2b92 | 1950 | |
db79b45b | 1951 | /* Should be named SvCatPVN_utf8_upgrade? */ |
4bac9ae4 | 1952 | #define sv_catpvn_nomg_utf8_upgrade(dsv, sstr, slen, nsv) \ |
db79b45b JH |
1953 | STMT_START { \ |
1954 | if (!(nsv)) \ | |
ad25789c | 1955 | nsv = newSVpvn_flags(sstr, slen, SVs_TEMP); \ |
db79b45b JH |
1956 | else \ |
1957 | sv_setpvn(nsv, sstr, slen); \ | |
1958 | SvUTF8_off(nsv); \ | |
1959 | sv_utf8_upgrade(nsv); \ | |
4bac9ae4 | 1960 | sv_catsv_nomg(dsv, nsv); \ |
db79b45b | 1961 | } STMT_END |
64534138 FC |
1962 | #define sv_catpvn_nomg_maybeutf8(dsv, sstr, slen, is_utf8) \ |
1963 | sv_catpvn_flags(dsv, sstr, slen, (is_utf8)?SV_CATUTF8:SV_CATBYTES) | |
79072805 | 1964 | |
25fdce4a | 1965 | #if defined(PERL_CORE) || defined(PERL_EXT) |
aec43834 FC |
1966 | # define sv_or_pv_len_utf8(sv, pv, bytelen) \ |
1967 | (SvGAMAGIC(sv) \ | |
1968 | ? utf8_length((U8 *)(pv), (U8 *)(pv)+(bytelen)) \ | |
1969 | : sv_len_utf8(sv)) | |
aec43834 FC |
1970 | #endif |
1971 | ||
954c1994 GS |
1972 | /* |
1973 | =for apidoc Am|SV*|newRV_inc|SV* sv | |
1974 | ||
1975 | Creates an RV wrapper for an SV. The reference count for the original SV is | |
1976 | incremented. | |
1977 | ||
1978 | =cut | |
1979 | */ | |
1980 | ||
5f05dabc | 1981 | #define newRV_inc(sv) newRV(sv) |
5f05dabc | 1982 | |
796b6530 | 1983 | /* the following macros update any magic values this C<sv> is associated with */ |
79072805 | 1984 | |
954c1994 | 1985 | /* |
ccfc67b7 JH |
1986 | =head1 Magical Functions |
1987 | ||
954c1994 | 1988 | =for apidoc Am|void|SvGETMAGIC|SV* sv |
f7e029ab FC |
1989 | Invokes C<mg_get> on an SV if it has 'get' magic. For example, this |
1990 | will call C<FETCH> on a tied variable. This macro evaluates its | |
954c1994 GS |
1991 | argument more than once. |
1992 | ||
1993 | =for apidoc Am|void|SvSETMAGIC|SV* sv | |
f7e029ab FC |
1994 | Invokes C<mg_set> on an SV if it has 'set' magic. This is necessary |
1995 | after modifying a scalar, in case it is a magical variable like C<$|> | |
1996 | or a tied variable (it calls C<STORE>). This macro evaluates its | |
954c1994 GS |
1997 | argument more than once. |
1998 | ||
87ef9da8 | 1999 | =for apidoc Am|void|SvSetSV|SV* dsv|SV* ssv |
796b6530 | 2000 | Calls C<sv_setsv> if C<dsv> is not the same as C<ssv>. May evaluate arguments |
f31006c9 | 2001 | more than once. Does not handle 'set' magic on the destination SV. |
954c1994 GS |
2002 | |
2003 | =for apidoc Am|void|SvSetSV_nosteal|SV* dsv|SV* ssv | |
796b6530 KW |
2004 | Calls a non-destructive version of C<sv_setsv> if C<dsv> is not the same as |
2005 | C<ssv>. May evaluate arguments more than once. | |
954c1994 | 2006 | |
87ef9da8 | 2007 | =for apidoc Am|void|SvSetMagicSV|SV* dsv|SV* ssv |
645c22ef DM |
2008 | Like C<SvSetSV>, but does any set magic required afterwards. |
2009 | ||
2010 | =for apidoc Am|void|SvSetMagicSV_nosteal|SV* dsv|SV* ssv | |
80663158 | 2011 | Like C<SvSetSV_nosteal>, but does any set magic required afterwards. |
645c22ef | 2012 | |
68795e93 | 2013 | =for apidoc Am|void|SvSHARE|SV* sv |
796b6530 | 2014 | Arranges for C<sv> to be shared between threads if a suitable module |
68795e93 NIS |
2015 | has been loaded. |
2016 | ||
2017 | =for apidoc Am|void|SvLOCK|SV* sv | |
796b6530 | 2018 | Arranges for a mutual exclusion lock to be obtained on C<sv> if a suitable module |
68795e93 NIS |
2019 | has been loaded. |
2020 | ||
2021 | =for apidoc Am|void|SvUNLOCK|SV* sv | |
796b6530 | 2022 | Releases a mutual exclusion lock on C<sv> if a suitable module |
68795e93 NIS |
2023 | has been loaded. |
2024 | ||
ccfc67b7 JH |
2025 | =head1 SV Manipulation Functions |
2026 | ||
679ac26e | 2027 | =for apidoc Am|char *|SvGROW|SV* sv|STRLEN len |
954c1994 GS |
2028 | Expands the character buffer in the SV so that it has room for the |
2029 | indicated number of bytes (remember to reserve space for an extra trailing | |
6602b933 | 2030 | C<NUL> character). Calls C<sv_grow> to perform the expansion if necessary. |
72d33970 | 2031 | Returns a pointer to the character |
796b6530 | 2032 | buffer. SV must be of type >= C<SVt_PV>. One |
4b1e7f06 | 2033 | alternative is to call C<sv_grow> if you are not sure of the type of SV. |
954c1994 | 2034 | |
d8732c60 KW |
2035 | You might mistakenly think that C<len> is the number of bytes to add to the |
2036 | existing size, but instead it is the total size C<sv> should be. | |
2037 | ||
45661033 YO |
2038 | =for apidoc Am|char *|SvPVCLEAR|SV* sv |
2039 | Ensures that sv is a SVt_PV and that its SvCUR is 0, and that it is | |
2040 | properly null terminated. Equivalent to sv_setpvs(""), but more efficient. | |
2041 | ||
954c1994 GS |
2042 | =cut |
2043 | */ | |
2044 | ||
45661033 | 2045 | #define SvPVCLEAR(sv) sv_setpv_bufsize(sv,0,0) |
16c91539 BM |
2046 | #define SvSHARE(sv) PL_sharehook(aTHX_ sv) |
2047 | #define SvLOCK(sv) PL_lockhook(aTHX_ sv) | |
2048 | #define SvUNLOCK(sv) PL_unlockhook(aTHX_ sv) | |
2049 | #define SvDESTROYABLE(sv) PL_destroyhook(aTHX_ sv) | |
68795e93 | 2050 | |
5d9574c1 DM |
2051 | #define SvGETMAGIC(x) ((void)(UNLIKELY(SvGMAGICAL(x)) && mg_get(x))) |
2052 | #define SvSETMAGIC(x) STMT_START { if (UNLIKELY(SvSMAGICAL(x))) mg_set(x); } STMT_END | |
79072805 | 2053 | |
54310121 | 2054 | #define SvSetSV_and(dst,src,finally) \ |
189b2af5 | 2055 | STMT_START { \ |
5d9574c1 | 2056 | if (LIKELY((dst) != (src))) { \ |
54310121 | 2057 | sv_setsv(dst, src); \ |
2058 | finally; \ | |
189b2af5 GS |
2059 | } \ |
2060 | } STMT_END | |
54310121 | 2061 | #define SvSetSV_nosteal_and(dst,src,finally) \ |
189b2af5 | 2062 | STMT_START { \ |
5d9574c1 | 2063 | if (LIKELY((dst) != (src))) { \ |
34482cd6 | 2064 | sv_setsv_flags(dst, src, SV_GMAGIC | SV_NOSTEAL | SV_DO_COW_SVSETSV); \ |
54310121 | 2065 | finally; \ |
189b2af5 GS |
2066 | } \ |
2067 | } STMT_END | |
79072805 | 2068 | |
54310121 | 2069 | #define SvSetSV(dst,src) \ |
c9d716f7 | 2070 | SvSetSV_and(dst,src,/*nothing*/;) |
54310121 | 2071 | #define SvSetSV_nosteal(dst,src) \ |
c9d716f7 | 2072 | SvSetSV_nosteal_and(dst,src,/*nothing*/;) |
54310121 | 2073 | |
2074 | #define SvSetMagicSV(dst,src) \ | |
4e3a8365 | 2075 | SvSetSV_and(dst,src,SvSETMAGIC(dst)) |
54310121 | 2076 | #define SvSetMagicSV_nosteal(dst,src) \ |
4e3a8365 | 2077 | SvSetSV_nosteal_and(dst,src,SvSETMAGIC(dst)) |
54310121 | 2078 | |
db79b45b | 2079 | |
1045810a | 2080 | #if !defined(SKIP_DEBUGGING) |
79072805 | 2081 | #define SvPEEK(sv) sv_peek(sv) |
3967c732 JD |
2082 | #else |
2083 | #define SvPEEK(sv) "" | |
2084 | #endif | |
79072805 | 2085 | |
3041a168 | 2086 | #define SvIMMORTAL(sv) (SvREADONLY(sv) && ((sv)==&PL_sv_undef || (sv)==&PL_sv_yes || (sv)==&PL_sv_no || (sv)==&PL_sv_placeholder)) |
36477c24 | 2087 | |
fe54beba DM |
2088 | #ifdef DEBUGGING |
2089 | /* exercise the immortal resurrection code in sv_free2() */ | |
2090 | # define SvREFCNT_IMMORTAL 1000 | |
2091 | #else | |
2092 | # define SvREFCNT_IMMORTAL ((~(U32)0)/2) | |
2093 | #endif | |
2094 | ||
567f3b56 TC |
2095 | /* |
2096 | =for apidoc Am|SV *|boolSV|bool b | |
2097 | ||
2098 | Returns a true SV if C<b> is a true value, or a false SV if C<b> is 0. | |
2099 | ||
fbe13c60 | 2100 | See also C<L</PL_sv_yes>> and C<L</PL_sv_no>>. |
567f3b56 TC |
2101 | |
2102 | =cut | |
2103 | */ | |
2104 | ||
3280af22 | 2105 | #define boolSV(b) ((b) ? &PL_sv_yes : &PL_sv_no) |
54310121 | 2106 | |
79072805 | 2107 | #define isGV(sv) (SvTYPE(sv) == SVt_PVGV) |
f7877b28 NC |
2108 | /* If I give every macro argument a different name, then there won't be bugs |
2109 | where nested macros get confused. Been there, done that. */ | |
2110 | #define isGV_with_GP(pwadak) \ | |
2e5b91de | 2111 | (((SvFLAGS(pwadak) & (SVp_POK|SVpgv_GP)) == SVpgv_GP) \ |
f7877b28 | 2112 | && (SvTYPE(pwadak) == SVt_PVGV || SvTYPE(pwadak) == SVt_PVLV)) |
2e5b91de | 2113 | #define isGV_with_GP_on(sv) STMT_START { \ |
70ad9799 SP |
2114 | assert (SvTYPE(sv) == SVt_PVGV || SvTYPE(sv) == SVt_PVLV); \ |
2115 | assert (!SvPOKp(sv)); \ | |
2116 | assert (!SvIOKp(sv)); \ | |
2117 | (SvFLAGS(sv) |= SVpgv_GP); \ | |
2e5b91de NC |
2118 | } STMT_END |
2119 | #define isGV_with_GP_off(sv) STMT_START { \ | |
70ad9799 SP |
2120 | assert (SvTYPE(sv) == SVt_PVGV || SvTYPE(sv) == SVt_PVLV); \ |
2121 | assert (!SvPOKp(sv)); \ | |
2122 | assert (!SvIOKp(sv)); \ | |
2e5b91de NC |
2123 | (SvFLAGS(sv) &= ~SVpgv_GP); \ |
2124 | } STMT_END | |
8d919b0a FC |
2125 | #define isREGEXP(sv) \ |
2126 | (SvTYPE(sv) == SVt_REGEXP \ | |
2127 | || (SvFLAGS(sv) & (SVTYPEMASK|SVp_POK|SVpgv_GP|SVf_FAKE)) \ | |
2128 | == (SVt_PVLV|SVf_FAKE)) | |
2e5b91de | 2129 | |
79072805 | 2130 | |
bba82a09 | 2131 | #ifdef PERL_ANY_COW |
db2c6cb3 | 2132 | # define SvGROW(sv,len) \ |
6bbd724f | 2133 | (SvIsCOW(sv) || SvLEN(sv) < (len) ? sv_grow(sv,len) : SvPVX(sv)) |
db2c6cb3 | 2134 | #else |
6bbd724f | 2135 | # define SvGROW(sv,len) (SvLEN(sv) < (len) ? sv_grow(sv,len) : SvPVX(sv)) |
db2c6cb3 | 2136 | #endif |
6bbd724f DM |
2137 | #define SvGROW_mutable(sv,len) \ |
2138 | (SvLEN(sv) < (len) ? sv_grow(sv,len) : SvPVX_mutable(sv)) | |
933fea7f | 2139 | #define Sv_Grow sv_grow |
3d35f11b | 2140 | |
a0739874 DM |
2141 | #define CLONEf_COPY_STACKS 1 |
2142 | #define CLONEf_KEEP_PTR_TABLE 2 | |
c43294b8 | 2143 | #define CLONEf_CLONE_HOST 4 |
0405e91e | 2144 | #define CLONEf_JOIN_IN 8 |
a0739874 | 2145 | |
8cf8f3d1 | 2146 | struct clone_params { |
d2d73c3e AB |
2147 | AV* stashes; |
2148 | UV flags; | |
59b40662 | 2149 | PerlInterpreter *proto_perl; |
1db366cc | 2150 | PerlInterpreter *new_perl; |
d08d57ef | 2151 | AV *unreferenced; |
8cf8f3d1 | 2152 | }; |
102d3b8a NC |
2153 | |
2154 | /* | |
740cce10 NC |
2155 | =for apidoc Am|SV*|newSVpvn_utf8|NULLOK const char* s|STRLEN len|U32 utf8 |
2156 | ||
30a15352 | 2157 | Creates a new SV and copies a string (which may contain C<NUL> (C<\0>) |
796b6530 | 2158 | characters) into it. If C<utf8> is true, calls |
740cce10 NC |
2159 | C<SvUTF8_on> on the new SV. Implemented as a wrapper around C<newSVpvn_flags>. |
2160 | ||
2161 | =cut | |
2162 | */ | |
2163 | ||
2164 | #define newSVpvn_utf8(s, len, u) newSVpvn_flags((s), (len), (u) ? SVf_UTF8 : 0) | |
2165 | ||
2166 | /* | |
35e035cc FC |
2167 | =for apidoc Amx|SV*|newSVpadname|PADNAME *pn |
2168 | ||
0f94cb1f | 2169 | Creates a new SV containing the pad name. |
35e035cc FC |
2170 | |
2171 | =cut | |
2172 | */ | |
2173 | ||
0f94cb1f | 2174 | #define newSVpadname(pn) newSVpvn_utf8(PadnamePV(pn), PadnameLEN(pn), TRUE) |
35e035cc FC |
2175 | |
2176 | /* | |
69240efd NC |
2177 | =for apidoc Am|void|SvOOK_offset|NN SV*sv|STRLEN len |
2178 | ||
796b6530 | 2179 | Reads into C<len> the offset from C<SvPVX> back to the true start of the |
69240efd | 2180 | allocated buffer, which will be non-zero if C<sv_chop> has been used to |
8554e7a0 | 2181 | efficiently remove characters from start of the buffer. Implemented as a |
2d7f6611 KW |
2182 | macro, which takes the address of C<len>, which must be of type C<STRLEN>. |
2183 | Evaluates C<sv> more than once. Sets C<len> to 0 if C<SvOOK(sv)> is false. | |
69240efd NC |
2184 | |
2185 | =cut | |
2186 | */ | |
2187 | ||
2188 | #ifdef DEBUGGING | |
2189 | /* Does the bot know something I don't? | |
2190 | 10:28 <@Nicholas> metabatman | |
2191 | 10:28 <+meta> Nicholas: crash | |
2192 | */ | |
2193 | # define SvOOK_offset(sv, offset) STMT_START { \ | |
2194 | assert(sizeof(offset) == sizeof(STRLEN)); \ | |
2195 | if (SvOOK(sv)) { \ | |
d845901f CS |
2196 | const U8 *_crash = (U8*)SvPVX_const(sv); \ |
2197 | (offset) = *--_crash; \ | |
2198 | if (!(offset)) { \ | |
2199 | _crash -= sizeof(STRLEN); \ | |
2200 | Copy(_crash, (U8 *)&(offset), sizeof(STRLEN), U8); \ | |
69240efd NC |
2201 | } \ |
2202 | { \ | |
2203 | /* Validate the preceding buffer's sentinels to \ | |
2204 | verify that no-one is using it. */ \ | |
d845901f CS |
2205 | const U8 *const _bonk = (U8*)SvPVX_const(sv) - (offset);\ |
2206 | while (_crash > _bonk) { \ | |
2207 | --_crash; \ | |
2208 | assert (*_crash == (U8)PTR2UV(_crash)); \ | |
69240efd NC |
2209 | } \ |
2210 | } \ | |
2211 | } else { \ | |
d845901f | 2212 | (offset) = 0; \ |
69240efd NC |
2213 | } \ |
2214 | } STMT_END | |
2215 | #else | |
2216 | /* This is the same code, but avoids using any temporary variables: */ | |
2217 | # define SvOOK_offset(sv, offset) STMT_START { \ | |
2218 | assert(sizeof(offset) == sizeof(STRLEN)); \ | |
2219 | if (SvOOK(sv)) { \ | |
d845901f CS |
2220 | (offset) = ((U8*)SvPVX_const(sv))[-1]; \ |
2221 | if (!(offset)) { \ | |
69240efd | 2222 | Copy(SvPVX_const(sv) - 1 - sizeof(STRLEN), \ |
d845901f | 2223 | (U8*)&(offset), sizeof(STRLEN), U8); \ |
69240efd NC |
2224 | } \ |
2225 | } else { \ | |
d845901f | 2226 | (offset) = 0; \ |
69240efd NC |
2227 | } \ |
2228 | } STMT_END | |
2229 | #endif | |
85dca89a NC |
2230 | |
2231 | #define newIO() MUTABLE_IO(newSV_type(SVt_PVIO)) | |
2232 | ||
a38ab475 RZ |
2233 | #define SV_CONST(name) \ |
2234 | PL_sv_consts[SV_CONST_##name] \ | |
2235 | ? PL_sv_consts[SV_CONST_##name] \ | |
2236 | : (PL_sv_consts[SV_CONST_##name] = newSVpv_share(#name, 0)) | |
2237 | ||
2238 | #define SV_CONST_TIESCALAR 0 | |
2239 | #define SV_CONST_TIEARRAY 1 | |
2240 | #define SV_CONST_TIEHASH 2 | |
2241 | #define SV_CONST_TIEHANDLE 3 | |
2242 | ||
2243 | #define SV_CONST_FETCH 4 | |
2244 | #define SV_CONST_FETCHSIZE 5 | |
2245 | #define SV_CONST_STORE 6 | |
2246 | #define SV_CONST_STORESIZE 7 | |
2247 | #define SV_CONST_EXISTS 8 | |
2248 | ||
2249 | #define SV_CONST_PUSH 9 | |
2250 | #define SV_CONST_POP 10 | |
2251 | #define SV_CONST_SHIFT 11 | |
2252 | #define SV_CONST_UNSHIFT 12 | |
2253 | #define SV_CONST_SPLICE 13 | |
2254 | #define SV_CONST_EXTEND 14 | |
2255 | ||
2256 | #define SV_CONST_FIRSTKEY 15 | |
2257 | #define SV_CONST_NEXTKEY 16 | |
2258 | #define SV_CONST_SCALAR 17 | |
2259 | ||
2260 | #define SV_CONST_OPEN 18 | |
2261 | #define SV_CONST_WRITE 19 | |
2262 | #define SV_CONST_PRINT 20 | |
2263 | #define SV_CONST_PRINTF 21 | |
2264 | #define SV_CONST_READ 22 | |
2265 | #define SV_CONST_READLINE 23 | |
2266 | #define SV_CONST_GETC 24 | |
2267 | #define SV_CONST_SEEK 25 | |
2268 | #define SV_CONST_TELL 26 | |
2269 | #define SV_CONST_EOF 27 | |
2270 | #define SV_CONST_BINMODE 28 | |
2271 | #define SV_CONST_FILENO 29 | |
2272 | #define SV_CONST_CLOSE 30 | |
2273 | ||
2274 | #define SV_CONST_DELETE 31 | |
2275 | #define SV_CONST_CLEAR 32 | |
2276 | #define SV_CONST_UNTIE 33 | |
2277 | #define SV_CONST_DESTROY 34 | |
2278 | ||
2279 | #define SV_CONSTS_COUNT 35 | |
2280 | ||
69240efd | 2281 | /* |
82fce3d0 DM |
2282 | * Bodyless IVs and NVs! |
2283 | * | |
2284 | * Since 5.9.2, we can avoid allocating a body for SVt_IV-type SVs. | |
2285 | * Since the larger IV-holding variants of SVs store their integer | |
2286 | * values in their respective bodies, the family of SvIV() accessor | |
2287 | * macros would naively have to branch on the SV type to find the | |
2288 | * integer value either in the HEAD or BODY. In order to avoid this | |
2289 | * expensive branch, a clever soul has deployed a great hack: | |
2290 | * We set up the SvANY pointer such that instead of pointing to a | |
2291 | * real body, it points into the memory before the location of the | |
2292 | * head. We compute this pointer such that the location of | |
2293 | * the integer member of the hypothetical body struct happens to | |
2294 | * be the same as the location of the integer member of the bodyless | |
2295 | * SV head. This now means that the SvIV() family of accessors can | |
2296 | * always read from the (hypothetical or real) body via SvANY. | |
2297 | * | |
2298 | * Since the 5.21 dev series, we employ the same trick for NVs | |
2299 | * if the architecture can support it (NVSIZE <= IVSIZE). | |
2300 | */ | |
2301 | ||
2302 | /* The following two macros compute the necessary offsets for the above | |
2303 | * trick and store them in SvANY for SvIV() (and friends) to use. */ | |
2304 | ||
2305 | #ifdef PERL_CORE | |
2306 | # define SET_SVANY_FOR_BODYLESS_IV(sv) \ | |
2307 | SvANY(sv) = (XPVIV*)((char*)&(sv->sv_u.svu_iv) \ | |
2308 | - STRUCT_OFFSET(XPVIV, xiv_iv)) | |
2309 | ||
2310 | # define SET_SVANY_FOR_BODYLESS_NV(sv) \ | |
2311 | SvANY(sv) = (XPVNV*)((char*)&(sv->sv_u.svu_nv) \ | |
2312 | - STRUCT_OFFSET(XPVNV, xnv_u.xnv_nv)) | |
2313 | #endif | |
2314 | ||
2315 | /* | |
14d04a33 | 2316 | * ex: set ts=8 sts=4 sw=4 et: |
102d3b8a | 2317 | */ |