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 |
8cf8f3d1 | 19 | An enum of flags for Perl types. These are found in the file B<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 | |
32 | SVt_REGEXP | |
33 | SVt_PVGV | |
34 | SVt_PVLV | |
35 | SVt_PVAV | |
36 | SVt_PVHV | |
37 | SVt_PVCV | |
38 | SVt_PVFM | |
39 | SVt_PVIO | |
40 | ||
41 | These are most easily explained from the bottom up. | |
42 | ||
43 | SVt_PVIO is for I/O objects, SVt_PVFM for formats, SVt_PVCV for | |
44 | subroutines, SVt_PVHV for hashes and SVt_PVAV for arrays. | |
45 | ||
46 | All the others are scalar types, that is, things that can be bound to a | |
47 | C<$> variable. For these, the internal types are mostly orthogonal to | |
48 | types in the Perl language. | |
49 | ||
50 | Hence, checking C<< SvTYPE(sv) < SVt_PVAV >> is the best way to see whether | |
51 | something is a scalar. | |
52 | ||
53 | SVt_PVGV represents a typeglob. If !SvFAKE(sv), then it is a real, | |
54 | incoercible typeglob. If SvFAKE(sv), then it is a scalar to which a | |
55 | typeglob has been assigned. Assigning to it again will stop it from being | |
56 | a typeglob. SVt_PVLV represents a scalar that delegates to another scalar | |
57 | behind the scenes. It is used, e.g., for the return value of C<substr> and | |
58 | for tied hash and array elements. It can hold any scalar value, including | |
59 | a typeglob. SVt_REGEXP is for regular expressions. | |
60 | ||
61 | SVt_PVMG represents a "normal" scalar (not a typeglob, regular expression, | |
62 | or delegate). Since most scalars do not need all the internal fields of a | |
63 | PVMG, we save memory by allocating smaller structs when possible. All the | |
64 | other types are just simpler forms of SVt_PVMG, with fewer internal fields. | |
65 | SVt_NULL can only hold undef. SVt_IV can hold undef, an integer, or a | |
66 | reference. (SVt_RV is an alias for SVt_IV, which exists for backward | |
67 | compatibility.) SVt_NV can hold any of those or a double. SVt_PV can only | |
68 | hold undef or a string. SVt_PVIV is a superset of SVt_PV and SVt_IV. | |
69 | SVt_PVNV is similar. SVt_PVMG can hold anything SVt_PVNV can hold, but it | |
70 | can, but does not have to, be blessed or magical. | |
71 | ||
72 | =for apidoc AmU||SVt_NULL | |
73 | Type flag for scalars. See L</svtype>. | |
954c1994 GS |
74 | |
75 | =for apidoc AmU||SVt_IV | |
a5e62da0 | 76 | Type flag for scalars. See L</svtype>. |
954c1994 GS |
77 | |
78 | =for apidoc AmU||SVt_NV | |
a5e62da0 FC |
79 | Type flag for scalars. See L</svtype>. |
80 | ||
81 | =for apidoc AmU||SVt_PV | |
82 | Type flag for scalars. See L</svtype>. | |
83 | ||
84 | =for apidoc AmU||SVt_PVIV | |
85 | Type flag for scalars. See L</svtype>. | |
86 | ||
87 | =for apidoc AmU||SVt_PVNV | |
88 | Type flag for scalars. See L</svtype>. | |
954c1994 GS |
89 | |
90 | =for apidoc AmU||SVt_PVMG | |
a5e62da0 FC |
91 | Type flag for scalars. See L</svtype>. |
92 | ||
93 | =for apidoc AmU||SVt_REGEXP | |
94 | Type flag for regular expressions. See L</svtype>. | |
95 | ||
96 | =for apidoc AmU||SVt_PVGV | |
97 | Type flag for typeglobs. See L</svtype>. | |
98 | ||
99 | =for apidoc AmU||SVt_PVLV | |
100 | Type flag for scalars. See L</svtype>. | |
954c1994 GS |
101 | |
102 | =for apidoc AmU||SVt_PVAV | |
a5e62da0 | 103 | Type flag for arrays. See L</svtype>. |
954c1994 GS |
104 | |
105 | =for apidoc AmU||SVt_PVHV | |
a5e62da0 | 106 | Type flag for hashes. See L</svtype>. |
954c1994 GS |
107 | |
108 | =for apidoc AmU||SVt_PVCV | |
a5e62da0 FC |
109 | Type flag for subroutines. See L</svtype>. |
110 | ||
111 | =for apidoc AmU||SVt_PVFM | |
112 | Type flag for formats. See L</svtype>. | |
113 | ||
114 | =for apidoc AmU||SVt_PVIO | |
115 | Type flag for I/O objects. See L</svtype>. | |
954c1994 GS |
116 | |
117 | =cut | |
118 | */ | |
119 | ||
79072805 | 120 | typedef enum { |
a0d0e21e | 121 | SVt_NULL, /* 0 */ |
a9032aa0 | 122 | SVt_DUMMY, /* 1 */ |
1cb9cd50 | 123 | SVt_IV, /* 2 */ |
4df7f6af NC |
124 | SVt_NV, /* 3 */ |
125 | /* RV was here, before it was merged with IV. */ | |
126 | SVt_PV, /* 4 */ | |
127 | SVt_PVIV, /* 5 */ | |
128 | SVt_PVNV, /* 6 */ | |
129 | SVt_PVMG, /* 7 */ | |
5c35adbb | 130 | SVt_REGEXP, /* 8 */ |
cecf5685 | 131 | /* PVBM was here, before BIND replaced it. */ |
4ce457a6 TP |
132 | SVt_PVGV, /* 9 */ |
133 | SVt_PVLV, /* 10 */ | |
134 | SVt_PVAV, /* 11 */ | |
135 | SVt_PVHV, /* 12 */ | |
136 | SVt_PVCV, /* 13 */ | |
a0d0e21e | 137 | SVt_PVFM, /* 14 */ |
93e68bfb JC |
138 | SVt_PVIO, /* 15 */ |
139 | SVt_LAST /* keep last in enum. used to size arrays */ | |
79072805 LW |
140 | } svtype; |
141 | ||
f1fb8741 DM |
142 | /* *** any alterations to the SV types above need to be reflected in |
143 | * SVt_MASK and the various PL_valid_types_* tables */ | |
144 | ||
145 | #define SVt_MASK 0xf /* smallest bitmask that covers all types */ | |
146 | ||
cecf5685 NC |
147 | #ifndef PERL_CORE |
148 | /* Although Fast Boyer Moore tables are now being stored in PVGVs, for most | |
149 | purposes eternal code wanting to consider PVBM probably needs to think of | |
150 | PVMG instead. */ | |
151 | # define SVt_PVBM SVt_PVMG | |
4df7f6af NC |
152 | /* Anything wanting to create a reference from clean should ensure that it has |
153 | a scalar of type SVt_IV now: */ | |
154 | # define SVt_RV SVt_IV | |
cecf5685 NC |
155 | #endif |
156 | ||
d2a0f284 | 157 | /* There is collusion here with sv_clear - sv_clear exits early for SVt_NULL |
db93c0c4 NC |
158 | so never reaches the clause at the end that uses sv_type_details->body_size |
159 | to determine whether to call safefree(). Hence body_size can be set | |
160 | non-zero to record the size of HEs, without fear of bogus frees. */ | |
6a93a7e5 NC |
161 | #if defined(PERL_IN_HV_C) || defined(PERL_IN_XS_APITEST) |
162 | #define HE_SVSLOT SVt_NULL | |
163 | #endif | |
43e6e717 | 164 | |
232d1c15 NC |
165 | #define PERL_ARENA_ROOTS_SIZE (SVt_LAST) |
166 | ||
43e6e717 NC |
167 | /* typedefs to eliminate some typing */ |
168 | typedef struct he HE; | |
169 | typedef struct hek HEK; | |
170 | ||
79072805 LW |
171 | /* Using C's structural equivalence to help emulate C++ inheritance here... */ |
172 | ||
30153bd2 JC |
173 | /* start with 2 sv-head building blocks */ |
174 | #define _SV_HEAD(ptrtype) \ | |
175 | ptrtype sv_any; /* pointer to body */ \ | |
176 | U32 sv_refcnt; /* how many references to us */ \ | |
177 | U32 sv_flags /* what we are */ | |
178 | ||
179 | #define _SV_HEAD_UNION \ | |
180 | union { \ | |
2a12fdfc | 181 | char* svu_pv; /* pointer to malloced string */ \ |
30153bd2 JC |
182 | IV svu_iv; \ |
183 | UV svu_uv; \ | |
184 | SV* svu_rv; /* pointer to another SV */ \ | |
8d919b0a | 185 | struct regexp* svu_rx; \ |
30153bd2 JC |
186 | SV** svu_array; \ |
187 | HE** svu_hash; \ | |
f7877b28 | 188 | GP* svu_gp; \ |
6f7e8353 | 189 | PerlIO *svu_fp; \ |
30153bd2 JC |
190 | } sv_u |
191 | ||
192 | ||
5e045b90 | 193 | struct STRUCT_SV { /* struct sv { */ |
30153bd2 JC |
194 | _SV_HEAD(void*); |
195 | _SV_HEAD_UNION; | |
fd0854ff | 196 | #ifdef DEBUG_LEAKING_SCALARS |
654eccd5 JD |
197 | PERL_BITFIELD32 sv_debug_optype:9; /* the type of OP that allocated us */ |
198 | PERL_BITFIELD32 sv_debug_inpad:1; /* was allocated in a pad for an OP */ | |
654eccd5 | 199 | PERL_BITFIELD32 sv_debug_line:16; /* the line where we were allocated */ |
c895a371 | 200 | UV sv_debug_serial; /* serial number of sv allocation */ |
cd676548 DM |
201 | char * sv_debug_file; /* the file where we were allocated */ |
202 | SV * sv_debug_parent; /* what we were cloned from (ithreads)*/ | |
fd0854ff | 203 | #endif |
79072805 LW |
204 | }; |
205 | ||
206 | struct gv { | |
30153bd2 JC |
207 | _SV_HEAD(XPVGV*); /* pointer to xpvgv body */ |
208 | _SV_HEAD_UNION; | |
79072805 LW |
209 | }; |
210 | ||
211 | struct cv { | |
30153bd2 JC |
212 | _SV_HEAD(XPVCV*); /* pointer to xpvcv body */ |
213 | _SV_HEAD_UNION; | |
79072805 LW |
214 | }; |
215 | ||
216 | struct av { | |
0f7b1ae0 | 217 | _SV_HEAD(XPVAV*); /* pointer to xpvav body */ |
30153bd2 | 218 | _SV_HEAD_UNION; |
79072805 LW |
219 | }; |
220 | ||
221 | struct hv { | |
30153bd2 JC |
222 | _SV_HEAD(XPVHV*); /* pointer to xpvhv body */ |
223 | _SV_HEAD_UNION; | |
8990e307 LW |
224 | }; |
225 | ||
226 | struct io { | |
30153bd2 JC |
227 | _SV_HEAD(XPVIO*); /* pointer to xpvio body */ |
228 | _SV_HEAD_UNION; | |
79072805 LW |
229 | }; |
230 | ||
d2f13c59 NC |
231 | struct p5rx { |
232 | _SV_HEAD(struct regexp*); /* pointer to regexp body */ | |
233 | _SV_HEAD_UNION; | |
234 | }; | |
235 | ||
30153bd2 | 236 | #undef _SV_HEAD |
0f7b1ae0 | 237 | #undef _SV_HEAD_UNION /* ensure no pollution */ |
30153bd2 | 238 | |
954c1994 | 239 | /* |
ccfc67b7 JH |
240 | =head1 SV Manipulation Functions |
241 | ||
954c1994 GS |
242 | =for apidoc Am|U32|SvREFCNT|SV* sv |
243 | Returns the value of the object's reference count. | |
244 | ||
245 | =for apidoc Am|SV*|SvREFCNT_inc|SV* sv | |
5df2f140 | 246 | Increments the reference count of the given SV, returning the SV. |
954c1994 | 247 | |
b37c2d43 AL |
248 | All of the following SvREFCNT_inc* macros are optimized versions of |
249 | SvREFCNT_inc, and can be replaced with SvREFCNT_inc. | |
250 | ||
251 | =for apidoc Am|SV*|SvREFCNT_inc_NN|SV* sv | |
252 | Same as SvREFCNT_inc, but can only be used if you know I<sv> | |
253 | is not NULL. Since we don't have to check the NULLness, it's faster | |
254 | and smaller. | |
255 | ||
f2403e57 | 256 | =for apidoc Am|void|SvREFCNT_inc_void|SV* sv |
b37c2d43 AL |
257 | Same as SvREFCNT_inc, but can only be used if you don't need the |
258 | return value. The macro doesn't need to return a meaningful value. | |
259 | ||
f2403e57 | 260 | =for apidoc Am|void|SvREFCNT_inc_void_NN|SV* sv |
b37c2d43 AL |
261 | Same as SvREFCNT_inc, but can only be used if you don't need the return |
262 | value, and you know that I<sv> is not NULL. The macro doesn't need | |
263 | to return a meaningful value, or check for NULLness, so it's smaller | |
264 | and faster. | |
265 | ||
266 | =for apidoc Am|SV*|SvREFCNT_inc_simple|SV* sv | |
4ea561bc NC |
267 | Same as SvREFCNT_inc, but can only be used with expressions without side |
268 | effects. Since we don't have to store a temporary value, it's faster. | |
b37c2d43 AL |
269 | |
270 | =for apidoc Am|SV*|SvREFCNT_inc_simple_NN|SV* sv | |
271 | Same as SvREFCNT_inc_simple, but can only be used if you know I<sv> | |
272 | is not NULL. Since we don't have to check the NULLness, it's faster | |
273 | and smaller. | |
274 | ||
f2403e57 | 275 | =for apidoc Am|void|SvREFCNT_inc_simple_void|SV* sv |
b37c2d43 AL |
276 | Same as SvREFCNT_inc_simple, but can only be used if you don't need the |
277 | return value. The macro doesn't need to return a meaningful value. | |
278 | ||
f2403e57 | 279 | =for apidoc Am|void|SvREFCNT_inc_simple_void_NN|SV* sv |
e638c624 MHM |
280 | Same as SvREFCNT_inc, but can only be used if you don't need the return |
281 | value, and you know that I<sv> is not NULL. The macro doesn't need | |
282 | to return a meaningful value, or check for NULLness, so it's smaller | |
283 | and faster. | |
b37c2d43 | 284 | |
954c1994 | 285 | =for apidoc Am|void|SvREFCNT_dec|SV* sv |
cb870e11 | 286 | Decrements the reference count of the given SV. I<sv> may be NULL. |
954c1994 | 287 | |
4a9a56a7 DM |
288 | =for apidoc Am|void|SvREFCNT_dec_NN|SV* sv |
289 | Same as SvREFCNT_dec, but can only be used if you know I<sv> | |
290 | is not NULL. Since we don't have to check the NULLness, it's faster | |
291 | and smaller. | |
292 | ||
954c1994 GS |
293 | =for apidoc Am|svtype|SvTYPE|SV* sv |
294 | Returns the type of the SV. See C<svtype>. | |
295 | ||
296 | =for apidoc Am|void|SvUPGRADE|SV* sv|svtype type | |
297 | Used to upgrade an SV to a more complex form. Uses C<sv_upgrade> to | |
298 | perform the upgrade if necessary. See C<svtype>. | |
299 | ||
300 | =cut | |
301 | */ | |
302 | ||
463ee0b2 | 303 | #define SvANY(sv) (sv)->sv_any |
79072805 | 304 | #define SvFLAGS(sv) (sv)->sv_flags |
aeea060c | 305 | #define SvREFCNT(sv) (sv)->sv_refcnt |
a863c7d1 | 306 | |
27669aa4 FC |
307 | #define SvREFCNT_inc(sv) S_SvREFCNT_inc(MUTABLE_SV(sv)) |
308 | #define SvREFCNT_inc_simple(sv) SvREFCNT_inc(sv) | |
309 | #define SvREFCNT_inc_NN(sv) S_SvREFCNT_inc_NN(MUTABLE_SV(sv)) | |
310 | #define SvREFCNT_inc_void(sv) S_SvREFCNT_inc_void(MUTABLE_SV(sv)) | |
8990e307 | 311 | |
b37c2d43 | 312 | /* These guys don't need the curly blocks */ |
e638c624 | 313 | #define SvREFCNT_inc_simple_void(sv) STMT_START { if (sv) SvREFCNT(sv)++; } STMT_END |
b1bc3f34 NC |
314 | #define SvREFCNT_inc_simple_NN(sv) (++(SvREFCNT(sv)),MUTABLE_SV(sv)) |
315 | #define SvREFCNT_inc_void_NN(sv) (void)(++SvREFCNT(MUTABLE_SV(sv))) | |
316 | #define SvREFCNT_inc_simple_void_NN(sv) (void)(++SvREFCNT(MUTABLE_SV(sv))) | |
b37c2d43 | 317 | |
75e16a44 | 318 | #define SvREFCNT_dec(sv) S_SvREFCNT_dec(aTHX_ MUTABLE_SV(sv)) |
4a9a56a7 | 319 | #define SvREFCNT_dec_NN(sv) S_SvREFCNT_dec_NN(aTHX_ MUTABLE_SV(sv)) |
a863c7d1 | 320 | |
8990e307 | 321 | #define SVTYPEMASK 0xff |
1fef4616 | 322 | #define SvTYPE(sv) ((svtype)((sv)->sv_flags & SVTYPEMASK)) |
79072805 | 323 | |
0565a181 NC |
324 | /* Sadly there are some parts of the core that have pointers to already-freed |
325 | SV heads, and rely on being able to tell that they are now free. So mark | |
326 | them all by using a consistent macro. */ | |
327 | #define SvIS_FREED(sv) ((sv)->sv_flags == SVTYPEMASK) | |
328 | ||
24e08842 DM |
329 | /* this is defined in this peculiar way to avoid compiler warnings. |
330 | * See the <20121213131428.GD1842@iabyn.com> thread in p5p */ | |
463ea229 | 331 | #define SvUPGRADE(sv, mt) \ |
24e08842 | 332 | ((void)(SvTYPE(sv) >= (mt) || (sv_upgrade(sv, mt),1))) |
79072805 | 333 | |
3f7ef1d4 NC |
334 | #define SVf_IOK 0x00000100 /* has valid public integer value */ |
335 | #define SVf_NOK 0x00000200 /* has valid public numeric value */ | |
336 | #define SVf_POK 0x00000400 /* has valid public pointer value */ | |
337 | #define SVf_ROK 0x00000800 /* has a valid reference pointer */ | |
338 | ||
339 | #define SVp_IOK 0x00001000 /* has valid non-public integer value */ | |
340 | #define SVp_NOK 0x00002000 /* has valid non-public numeric value */ | |
341 | #define SVp_POK 0x00004000 /* has valid non-public pointer value */ | |
fbb778ec | 342 | #define SVp_SCREAM 0x00008000 /* method name is DOES */ |
2e5b91de NC |
343 | #define SVphv_CLONEABLE SVp_SCREAM /* PVHV (stashes) clone its objects */ |
344 | #define SVpgv_GP SVp_SCREAM /* GV has a valid GP */ | |
1ccdb730 NC |
345 | #define SVprv_PCS_IMPORTED SVp_SCREAM /* RV is a proxy for a constant |
346 | subroutine in another package. Set the | |
7eeb6e4e | 347 | GvIMPORTED_CV_on() if it needs to be |
1ccdb730 | 348 | expanded to a real GV */ |
e3918bb7 FC |
349 | #define SVf_IsCOW 0x00010000 /* copy on write (shared hash key if |
350 | SvLEN == 0) */ | |
9a214eec DM |
351 | #define SVs_PADTMP 0x00020000 /* in use as tmp; only if ! SVs_PADMY */ |
352 | #define SVs_PADSTALE 0x00020000 /* lexical has gone out of scope; | |
353 | only valid for SVs_PADMY */ | |
3f7ef1d4 NC |
354 | #define SVpad_TYPED 0x00020000 /* pad name is a Typed Lexical */ |
355 | #define SVs_PADMY 0x00040000 /* in use a "my" variable */ | |
356 | #define SVpad_OUR 0x00040000 /* pad name is "our" instead of "my" */ | |
357 | #define SVs_TEMP 0x00080000 /* string is stealable? */ | |
358 | #define SVs_OBJECT 0x00100000 /* is "blessed" */ | |
359 | #define SVs_GMG 0x00200000 /* has magical get method */ | |
360 | #define SVs_SMG 0x00400000 /* has magical set method */ | |
361 | #define SVs_RMG 0x00800000 /* has random magical methods */ | |
362 | ||
fea3622c | 363 | #define SVf_FAKE 0x01000000 /* 0: glob is just a copy |
3f7ef1d4 | 364 | 1: SV head arena wasn't malloc()ed |
e3918bb7 | 365 | 2: For PVCV, whether CvUNIQUE(cv) |
3f7ef1d4 NC |
366 | refers to an eval or once only |
367 | [CvEVAL(cv), CvSPECIAL(cv)] | |
e3918bb7 | 368 | 3: On a pad name SV, that slot in the |
3f7ef1d4 NC |
369 | frame AV is a REFCNT'ed reference |
370 | to a lexical from "outside". */ | |
3f7ef1d4 NC |
371 | #define SVf_OOK 0x02000000 /* has valid offset value. For a PVHV this |
372 | means that a hv_aux struct is present | |
373 | after the main array */ | |
374 | #define SVf_BREAK 0x04000000 /* refcnt is artificially low - used by | |
36c662f4 NC |
375 | SVs in final arena cleanup. |
376 | Set in S_regtry on PL_reg_curpm, so that | |
377 | perl_destruct will skip it. */ | |
3f7ef1d4 | 378 | #define SVf_READONLY 0x08000000 /* may not be modified */ |
8990e307 | 379 | |
a0d0e21e | 380 | |
8990e307 | 381 | |
5bc28da9 | 382 | |
e3918bb7 | 383 | #define SVf_THINKFIRST (SVf_READONLY|SVf_ROK|SVf_FAKE|SVs_RMG|SVf_IsCOW) |
5bc28da9 | 384 | |
a0d0e21e | 385 | #define SVf_OK (SVf_IOK|SVf_NOK|SVf_POK|SVf_ROK| \ |
2e5b91de | 386 | SVp_IOK|SVp_NOK|SVp_POK|SVpgv_GP) |
a0d0e21e | 387 | |
7a77f1af | 388 | #define PRIVSHIFT 4 /* (SVp_?OK >> PRIVSHIFT) == SVf_?OK */ |
8990e307 | 389 | |
cd028baa | 390 | #define SVf_AMAGIC 0x10000000 /* has magical overloaded methods */ |
2e9f07a2 NC |
391 | |
392 | /* Ensure this value does not clash with the GV_ADD* flags in gv.h: */ | |
cd028baa NC |
393 | #define SVf_UTF8 0x20000000 /* SvPV is UTF-8 encoded |
394 | This is also set on RVs whose overloaded | |
395 | stringification is UTF-8. This might | |
396 | only happen as a side effect of SvPV() */ | |
397 | ||
26a32e18 | 398 | |
8990e307 LW |
399 | /* Some private flags. */ |
400 | ||
2e9f07a2 NC |
401 | /* PVAV could probably use 0x2000000 without conflict. I assume that PVFM can |
402 | be UTF-8 encoded, and PVCVs could well have UTF-8 prototypes. PVIOs haven't | |
403 | been restructured, so sometimes get used as string buffers. */ | |
404 | ||
26a32e18 | 405 | /* PVHV */ |
3f7ef1d4 | 406 | #define SVphv_SHAREKEYS 0x20000000 /* PVHV keys live on shared string table */ |
e1dcbbca NC |
407 | |
408 | /* PVNV, PVMG only, and only used in pads. Should be safe to test on any scalar | |
409 | SV, as the core is careful to avoid setting both. | |
410 | ||
411 | SVf_POK, SVp_POK also set: | |
412 | 0x00004400 Normal | |
fbb778ec | 413 | 0x0000C400 method name for DOES (SvSCREAM) |
e1dcbbca NC |
414 | 0x40004400 FBM compiled (SvVALID) |
415 | 0x4000C400 pad name. | |
416 | ||
417 | 0x00008000 GV with GP | |
418 | 0x00008800 RV with PCS imported | |
419 | */ | |
420 | #define SVpad_NAME (SVp_SCREAM|SVpbm_VALID) | |
421 | /* This SV is a name in the PAD, so | |
3f7ef1d4 NC |
422 | SVpad_TYPED, SVpad_OUR and SVpad_STATE |
423 | apply */ | |
26a32e18 | 424 | /* PVAV */ |
3f7ef1d4 | 425 | #define SVpav_REAL 0x40000000 /* free old entries */ |
26a32e18 | 426 | /* PVHV */ |
3f7ef1d4 | 427 | #define SVphv_LAZYDEL 0x40000000 /* entry in xhv_eiter must be deleted */ |
69d97907 NC |
428 | /* This is only set true on a PVGV when it's playing "PVBM", but is tested for |
429 | on any regular scalar (anything <= PVLV) */ | |
5fe1b2e4 | 430 | #define SVpbm_VALID 0x40000000 |
7f83d853 | 431 | /* Only used in toke.c on an SV stored in PL_lex_repl */ |
3f7ef1d4 | 432 | #define SVrepl_EVAL 0x40000000 /* Replacement part of s///e */ |
25da4f38 | 433 | |
26a32e18 | 434 | /* IV, PVIV, PVNV, PVMG, PVGV and (I assume) PVLV */ |
3f7ef1d4 | 435 | #define SVf_IVisUV 0x80000000 /* use XPVUV instead of XPVIV */ |
26a32e18 | 436 | /* PVAV */ |
3f7ef1d4 | 437 | #define SVpav_REIFY 0x80000000 /* can become real */ |
26a32e18 | 438 | /* PVHV */ |
3f7ef1d4 | 439 | #define SVphv_HASKFLAGS 0x80000000 /* keys have flag byte after hash */ |
cecf5685 | 440 | /* PVGV when SVpbm_VALID is true */ |
5fe1b2e4 | 441 | #define SVpbm_TAIL 0x80000000 |
26a32e18 | 442 | /* RV upwards. However, SVf_ROK and SVp_IOK are exclusive */ |
3f7ef1d4 | 443 | #define SVprv_WEAKREF 0x80000000 /* Weak reference */ |
d3ce79bd DM |
444 | /* pad name vars only */ |
445 | #define SVpad_STATE 0x80000000 /* pad name is a "state" var */ | |
810b8aa5 | 446 | |
6e128786 NC |
447 | #define _XPV_HEAD \ |
448 | HV* xmg_stash; /* class package */ \ | |
449 | union _xmgu xmg_u; \ | |
8de47657 | 450 | STRLEN xpv_cur; /* length of svu_pv as a C string */ \ |
8d919b0a FC |
451 | union { \ |
452 | STRLEN xpvlenu_len; /* allocated size */ \ | |
453 | char * xpvlenu_pv; /* regexp string */ \ | |
454 | } xpv_len_u | |
455 | ||
456 | #define xpv_len xpv_len_u.xpvlenu_len | |
bb02a38f | 457 | |
20f4945e MHM |
458 | union _xnvu { |
459 | NV xnv_nv; /* numeric value, if any */ | |
460 | HV * xgv_stash; | |
461 | struct { | |
462 | U32 xlow; | |
463 | U32 xhigh; | |
464 | } xpad_cop_seq; /* used by pad.c for cop_sequence */ | |
465 | struct { | |
ced45495 | 466 | I32 xbm_useful; |
20f4945e MHM |
467 | U8 xbm_rare; /* rarest character in string */ |
468 | } xbm_s; /* fields from PVBM */ | |
469 | }; | |
470 | ||
471 | union _xivu { | |
472 | IV xivu_iv; /* integer value */ | |
20f4945e | 473 | UV xivu_uv; |
20f4945e MHM |
474 | HEK * xivu_namehek; /* xpvlv, xpvgv: GvNAME */ |
475 | }; | |
476 | ||
477 | union _xmgu { | |
478 | MAGIC* xmg_magic; /* linked list of magicalness */ | |
479 | HV* xmg_ourstash; /* Stash for our (when SvPAD_OUR is true) */ | |
5bec93be | 480 | STRLEN xmg_hash_index; /* used while freeing hash entries */ |
20f4945e | 481 | }; |
11ca45c0 | 482 | |
79072805 | 483 | struct xpv { |
20f4945e | 484 | _XPV_HEAD; |
79072805 LW |
485 | }; |
486 | ||
487 | struct xpviv { | |
20f4945e MHM |
488 | _XPV_HEAD; |
489 | union _xivu xiv_u; | |
79072805 LW |
490 | }; |
491 | ||
311a25d9 NC |
492 | #define xiv_iv xiv_u.xivu_iv |
493 | ||
ff68c719 | 494 | struct xpvuv { |
20f4945e MHM |
495 | _XPV_HEAD; |
496 | union _xivu xuv_u; | |
ff68c719 | 497 | }; |
498 | ||
20f4945e | 499 | #define xuv_uv xuv_u.xivu_uv |
311a25d9 | 500 | |
79072805 | 501 | struct xpvnv { |
20f4945e MHM |
502 | _XPV_HEAD; |
503 | union _xivu xiv_u; | |
6e128786 | 504 | union _xnvu xnv_u; |
79072805 LW |
505 | }; |
506 | ||
3cd3be43 | 507 | /* This structure must match the beginning of struct xpvhv in hv.h. */ |
79072805 | 508 | struct xpvmg { |
20f4945e | 509 | _XPV_HEAD; |
6e128786 NC |
510 | union _xivu xiv_u; |
511 | union _xnvu xnv_u; | |
79072805 LW |
512 | }; |
513 | ||
514 | struct xpvlv { | |
20f4945e | 515 | _XPV_HEAD; |
6e128786 NC |
516 | union _xivu xiv_u; |
517 | union _xnvu xnv_u; | |
79072805 LW |
518 | STRLEN xlv_targoff; |
519 | STRLEN xlv_targlen; | |
520 | SV* xlv_targ; | |
dd28f7bb DM |
521 | char xlv_type; /* k=keys .=pos x=substr v=vec /=join/re |
522 | * y=alem/helem/iter t=tie T=tied HE */ | |
83f78d1a | 523 | char xlv_flags; /* 1 = negative offset 2 = negative len */ |
79072805 LW |
524 | }; |
525 | ||
cecf5685 NC |
526 | /* This structure works in 3 ways - regular scalar, GV with GP, or fast |
527 | Boyer-Moore. */ | |
79072805 | 528 | struct xpvgv { |
20f4945e | 529 | _XPV_HEAD; |
6e128786 NC |
530 | union _xivu xiv_u; |
531 | union _xnvu xnv_u; | |
79072805 LW |
532 | }; |
533 | ||
77a005ab MB |
534 | typedef U16 cv_flags_t; |
535 | ||
20f4945e MHM |
536 | #define _XPVCV_COMMON \ |
537 | HV * xcv_stash; \ | |
538 | union { \ | |
539 | OP * xcv_start; \ | |
540 | ANY xcv_xsubany; \ | |
541 | } xcv_start_u; \ | |
542 | union { \ | |
543 | OP * xcv_root; \ | |
544 | void (*xcv_xsub) (pTHX_ CV*); \ | |
545 | } xcv_root_u; \ | |
b290562e FC |
546 | union { \ |
547 | GV * xcv_gv; \ | |
548 | HEK * xcv_hek; \ | |
549 | } xcv_gv_u; \ | |
20f4945e | 550 | char * xcv_file; \ |
b70d5558 | 551 | PADLIST * xcv_padlist; \ |
20f4945e MHM |
552 | CV * xcv_outside; \ |
553 | U32 xcv_outside_seq; /* the COP sequence (at the point of our \ | |
554 | * compilation) in the lexically enclosing \ | |
555 | * sub */ \ | |
8de47657 FC |
556 | cv_flags_t xcv_flags; \ |
557 | I32 xcv_depth /* >= 2 indicates recursive call */ | |
8990e307 | 558 | |
0d856a3a FC |
559 | /* This structure must match XPVCV in cv.h */ |
560 | ||
20f4945e MHM |
561 | struct xpvfm { |
562 | _XPV_HEAD; | |
20f4945e | 563 | _XPVCV_COMMON; |
79072805 LW |
564 | }; |
565 | ||
167f2c4d | 566 | |
8990e307 | 567 | struct xpvio { |
20f4945e | 568 | _XPV_HEAD; |
6e128786 | 569 | union _xivu xiv_u; |
6f7e8353 NC |
570 | /* ifp and ofp are normally the same, but sockets need separate streams */ |
571 | PerlIO * xio_ofp; | |
c951e2ad NC |
572 | /* Cray addresses everything by word boundaries (64 bits) and |
573 | * code and data pointers cannot be mixed (which is exactly what | |
574 | * Perl_filter_add() tries to do with the dirp), hence the | |
575 | * following union trick (as suggested by Gurusamy Sarathy). | |
576 | * For further information see Geir Johansen's problem report | |
577 | * titled [ID 20000612.002] Perl problem on Cray system | |
578 | * The any pointer (known as IoANY()) will also be a good place | |
579 | * to hang any IO disciplines to. | |
580 | */ | |
581 | union { | |
582 | DIR * xiou_dirp; /* for opendir, readdir, etc */ | |
583 | void * xiou_any; /* for alignment */ | |
584 | } xio_dirpu; | |
585 | /* IV xio_lines is now in IVX $. */ | |
586 | IV xio_page; /* $% */ | |
587 | IV xio_page_len; /* $= */ | |
588 | IV xio_lines_left; /* $- */ | |
589 | char * xio_top_name; /* $^ */ | |
590 | GV * xio_top_gv; /* $^ */ | |
591 | char * xio_fmt_name; /* $~ */ | |
592 | GV * xio_fmt_gv; /* $~ */ | |
593 | char * xio_bottom_name;/* $^B */ | |
594 | GV * xio_bottom_gv; /* $^B */ | |
595 | char xio_type; | |
596 | U8 xio_flags; | |
8990e307 | 597 | }; |
167f2c4d | 598 | |
4755096e GS |
599 | #define xio_dirp xio_dirpu.xiou_dirp |
600 | #define xio_any xio_dirpu.xiou_any | |
8990e307 | 601 | |
e0c19803 GS |
602 | #define IOf_ARGV 1 /* this fp iterates over ARGV */ |
603 | #define IOf_START 2 /* check for null ARGV and substitute '-' */ | |
604 | #define IOf_FLUSH 4 /* this fp wants a flush after write op */ | |
605 | #define IOf_DIDTOP 8 /* just did top of form */ | |
606 | #define IOf_UNTAINT 16 /* consider this fp (and its data) "safe" */ | |
607 | #define IOf_NOLINE 32 /* slurped a pseudo-line from empty file */ | |
5bb89d25 NC |
608 | #define IOf_FAKE_DIRP 64 /* xio_dirp is fake (source filters kludge) |
609 | Also, when this is set, SvPVX() is valid */ | |
8990e307 | 610 | |
ed6116ce LW |
611 | /* The following macros define implementation-independent predicates on SVs. */ |
612 | ||
954c1994 | 613 | /* |
fbf9f983 RGS |
614 | =for apidoc Am|U32|SvNIOK|SV* sv |
615 | Returns a U32 value indicating whether the SV contains a number, integer or | |
954c1994 GS |
616 | double. |
617 | ||
fbf9f983 RGS |
618 | =for apidoc Am|U32|SvNIOKp|SV* sv |
619 | Returns a U32 value indicating whether the SV contains a number, integer or | |
fe749c9a | 620 | double. Checks the B<private> setting. Use C<SvNIOK> instead. |
954c1994 GS |
621 | |
622 | =for apidoc Am|void|SvNIOK_off|SV* sv | |
623 | Unsets the NV/IV status of an SV. | |
624 | ||
fbf9f983 | 625 | =for apidoc Am|U32|SvOK|SV* sv |
c0b6140e S |
626 | Returns a U32 value indicating whether the value is defined. This is |
627 | only meaningful for scalars. | |
954c1994 | 628 | |
fbf9f983 RGS |
629 | =for apidoc Am|U32|SvIOKp|SV* sv |
630 | Returns a U32 value indicating whether the SV contains an integer. Checks | |
fe749c9a | 631 | the B<private> setting. Use C<SvIOK> instead. |
954c1994 | 632 | |
fbf9f983 RGS |
633 | =for apidoc Am|U32|SvNOKp|SV* sv |
634 | Returns a U32 value indicating whether the SV contains a double. Checks the | |
fe749c9a | 635 | B<private> setting. Use C<SvNOK> instead. |
954c1994 | 636 | |
fbf9f983 RGS |
637 | =for apidoc Am|U32|SvPOKp|SV* sv |
638 | Returns a U32 value indicating whether the SV contains a character string. | |
fe749c9a | 639 | Checks the B<private> setting. Use C<SvPOK> instead. |
954c1994 | 640 | |
fbf9f983 RGS |
641 | =for apidoc Am|U32|SvIOK|SV* sv |
642 | Returns a U32 value indicating whether the SV contains an integer. | |
954c1994 GS |
643 | |
644 | =for apidoc Am|void|SvIOK_on|SV* sv | |
645 | Tells an SV that it is an integer. | |
646 | ||
647 | =for apidoc Am|void|SvIOK_off|SV* sv | |
648 | Unsets the IV status of an SV. | |
649 | ||
650 | =for apidoc Am|void|SvIOK_only|SV* sv | |
651 | Tells an SV that it is an integer and disables all other OK bits. | |
652 | ||
e331fc52 | 653 | =for apidoc Am|void|SvIOK_only_UV|SV* sv |
feba1f01 | 654 | Tells an SV that it is an unsigned integer and disables all other OK bits. |
e331fc52 | 655 | |
12fa07df | 656 | =for apidoc Am|bool|SvIOK_UV|SV* sv |
a6ceea06 KW |
657 | Returns a boolean indicating whether the SV contains an integer that must be |
658 | interpreted as unsigned. A non-negative integer whose value is within the | |
659 | range of both an IV and a UV may be be flagged as either SvUOK or SVIOK. | |
e331fc52 | 660 | |
fbf9f983 | 661 | =for apidoc Am|bool|SvUOK|SV* sv |
a6ceea06 KW |
662 | Returns a boolean indicating whether the SV contains an integer that must be |
663 | interpreted as unsigned. A non-negative integer whose value is within the | |
664 | range of both an IV and a UV may be be flagged as either SvUOK or SVIOK. | |
28e5dec8 | 665 | |
12fa07df | 666 | =for apidoc Am|bool|SvIOK_notUV|SV* sv |
d1be9408 | 667 | Returns a boolean indicating whether the SV contains a signed integer. |
e331fc52 | 668 | |
fbf9f983 RGS |
669 | =for apidoc Am|U32|SvNOK|SV* sv |
670 | Returns a U32 value indicating whether the SV contains a double. | |
954c1994 GS |
671 | |
672 | =for apidoc Am|void|SvNOK_on|SV* sv | |
673 | Tells an SV that it is a double. | |
674 | ||
675 | =for apidoc Am|void|SvNOK_off|SV* sv | |
676 | Unsets the NV status of an SV. | |
677 | ||
678 | =for apidoc Am|void|SvNOK_only|SV* sv | |
679 | Tells an SV that it is a double and disables all other OK bits. | |
680 | ||
fbf9f983 RGS |
681 | =for apidoc Am|U32|SvPOK|SV* sv |
682 | Returns a U32 value indicating whether the SV contains a character | |
954c1994 GS |
683 | string. |
684 | ||
685 | =for apidoc Am|void|SvPOK_on|SV* sv | |
686 | Tells an SV that it is a string. | |
687 | ||
688 | =for apidoc Am|void|SvPOK_off|SV* sv | |
689 | Unsets the PV status of an SV. | |
690 | ||
691 | =for apidoc Am|void|SvPOK_only|SV* sv | |
692 | Tells an SV that it is a string and disables all other OK bits. | |
1e54db1a | 693 | Will also turn off the UTF-8 status. |
954c1994 | 694 | |
b0f01acb JP |
695 | =for apidoc Am|bool|SvVOK|SV* sv |
696 | Returns a boolean indicating whether the SV contains a v-string. | |
697 | ||
fbf9f983 | 698 | =for apidoc Am|U32|SvOOK|SV* sv |
69240efd NC |
699 | Returns a U32 indicating whether the pointer to the string buffer is offset. |
700 | This hack is used internally to speed up removal of characters from the | |
701 | beginning of a SvPV. When SvOOK is true, then the start of the | |
702 | allocated string buffer is actually C<SvOOK_offset()> bytes before SvPVX. | |
703 | This offset used to be stored in SvIVX, but is now stored within the spare | |
704 | part of the buffer. | |
954c1994 | 705 | |
fbf9f983 | 706 | =for apidoc Am|U32|SvROK|SV* sv |
954c1994 GS |
707 | Tests if the SV is an RV. |
708 | ||
709 | =for apidoc Am|void|SvROK_on|SV* sv | |
710 | Tells an SV that it is an RV. | |
711 | ||
712 | =for apidoc Am|void|SvROK_off|SV* sv | |
713 | Unsets the RV status of an SV. | |
714 | ||
715 | =for apidoc Am|SV*|SvRV|SV* sv | |
716 | Dereferences an RV to return the SV. | |
717 | ||
718 | =for apidoc Am|IV|SvIVX|SV* sv | |
645c22ef | 719 | Returns the raw value in the SV's IV slot, without checks or conversions. |
8554e7a0 | 720 | Only use when you are sure SvIOK is true. See also C<SvIV()>. |
954c1994 GS |
721 | |
722 | =for apidoc Am|UV|SvUVX|SV* sv | |
645c22ef | 723 | Returns the raw value in the SV's UV slot, without checks or conversions. |
8554e7a0 | 724 | Only use when you are sure SvIOK is true. See also C<SvUV()>. |
954c1994 GS |
725 | |
726 | =for apidoc Am|NV|SvNVX|SV* sv | |
645c22ef | 727 | Returns the raw value in the SV's NV slot, without checks or conversions. |
8554e7a0 | 728 | Only use when you are sure SvNOK is true. See also C<SvNV()>. |
954c1994 GS |
729 | |
730 | =for apidoc Am|char*|SvPVX|SV* sv | |
645c22ef | 731 | Returns a pointer to the physical string in the SV. The SV must contain a |
f615be48 DD |
732 | string. Prior to 5.9.3 it is not safe to execute this macro unless the SV's |
733 | type >= SVt_PV. | |
954c1994 | 734 | |
5b36e945 FC |
735 | This is also used to store the name of an autoloaded subroutine in an XS |
736 | AUTOLOAD routine. See L<perlguts/Autoloading with XSUBs>. | |
89fc9e2a | 737 | |
954c1994 GS |
738 | =for apidoc Am|STRLEN|SvCUR|SV* sv |
739 | Returns the length of the string which is in the SV. See C<SvLEN>. | |
740 | ||
741 | =for apidoc Am|STRLEN|SvLEN|SV* sv | |
659239a4 MG |
742 | Returns the size of the string buffer in the SV, not including any part |
743 | attributable to C<SvOOK>. See C<SvCUR>. | |
954c1994 GS |
744 | |
745 | =for apidoc Am|char*|SvEND|SV* sv | |
f990ea3e FC |
746 | Returns a pointer to the spot just after the last character in |
747 | the string which is in the SV, where there is usually a trailing | |
748 | null (even though Perl scalars do not strictly require it). | |
954c1994 GS |
749 | See C<SvCUR>. Access the character as *(SvEND(sv)). |
750 | ||
f990ea3e FC |
751 | Warning: If C<SvCUR> is equal to C<SvLEN>, then C<SvEND> points to |
752 | unallocated memory. | |
753 | ||
954c1994 GS |
754 | =for apidoc Am|HV*|SvSTASH|SV* sv |
755 | Returns the stash of the SV. | |
756 | ||
672994ce | 757 | =for apidoc Am|void|SvIV_set|SV* sv|IV val |
20799e15 SP |
758 | Set the value of the IV pointer in sv to val. It is possible to perform |
759 | the same function of this macro with an lvalue assignment to C<SvIVX>. | |
760 | With future Perls, however, it will be more efficient to use | |
761 | C<SvIV_set> instead of the lvalue assignment to C<SvIVX>. | |
672994ce SP |
762 | |
763 | =for apidoc Am|void|SvNV_set|SV* sv|NV val | |
20799e15 | 764 | Set the value of the NV pointer in sv to val. See C<SvIV_set>. |
672994ce SP |
765 | |
766 | =for apidoc Am|void|SvPV_set|SV* sv|char* val | |
235fc044 FC |
767 | Set the value of the PV pointer in sv to val. See also C<SvIV_set>. |
768 | ||
769 | Beware that the existing pointer may be involved in copy-on-write or other | |
770 | mischief, so do C<SvOOK_off(sv)> and use C<sv_force_normal> or | |
771 | C<SvPV_force> (or check the SvIsCOW flag) first to make sure this | |
772 | modification is safe. | |
672994ce SP |
773 | |
774 | =for apidoc Am|void|SvUV_set|SV* sv|UV val | |
20799e15 | 775 | Set the value of the UV pointer in sv to val. See C<SvIV_set>. |
672994ce SP |
776 | |
777 | =for apidoc Am|void|SvRV_set|SV* sv|SV* val | |
20799e15 | 778 | Set the value of the RV pointer in sv to val. See C<SvIV_set>. |
672994ce SP |
779 | |
780 | =for apidoc Am|void|SvMAGIC_set|SV* sv|MAGIC* val | |
20799e15 | 781 | Set the value of the MAGIC pointer in sv to val. See C<SvIV_set>. |
672994ce | 782 | |
b6f4de24 | 783 | =for apidoc Am|void|SvSTASH_set|SV* sv|HV* val |
20799e15 | 784 | Set the value of the STASH pointer in sv to val. See C<SvIV_set>. |
672994ce | 785 | |
954c1994 | 786 | =for apidoc Am|void|SvCUR_set|SV* sv|STRLEN len |
20799e15 SP |
787 | Set the current length of the string which is in the SV. See C<SvCUR> |
788 | and C<SvIV_set>. | |
672994ce SP |
789 | |
790 | =for apidoc Am|void|SvLEN_set|SV* sv|STRLEN len | |
20799e15 | 791 | Set the actual length of the string which is in the SV. See C<SvIV_set>. |
954c1994 GS |
792 | |
793 | =cut | |
794 | */ | |
795 | ||
79072805 | 796 | #define SvNIOK(sv) (SvFLAGS(sv) & (SVf_IOK|SVf_NOK)) |
748a9306 | 797 | #define SvNIOKp(sv) (SvFLAGS(sv) & (SVp_IOK|SVp_NOK)) |
a0d0e21e | 798 | #define SvNIOK_off(sv) (SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK| \ |
25da4f38 | 799 | SVp_IOK|SVp_NOK|SVf_IVisUV)) |
79072805 | 800 | |
c7724415 FC |
801 | #define assert_not_ROK(sv) assert_(!SvROK(sv) || !SvRV(sv)) |
802 | #define assert_not_glob(sv) assert_(!isGV_with_GP(sv)) | |
906ed6d6 | 803 | |
3f2ee99a | 804 | #define SvOK(sv) (SvFLAGS(sv) & SVf_OK || isREGEXP(sv)) |
f7877b28 | 805 | #define SvOK_off(sv) (assert_not_ROK(sv) assert_not_glob(sv) \ |
dd2eae66 | 806 | SvFLAGS(sv) &= ~(SVf_OK| \ |
d41ff1b8 | 807 | SVf_IVisUV|SVf_UTF8), \ |
25da4f38 | 808 | SvOOK_off(sv)) |
54866b45 | 809 | #define SvOK_off_exc_UV(sv) (assert_not_ROK(sv) \ |
dd2eae66 | 810 | SvFLAGS(sv) &= ~(SVf_OK| \ |
d41ff1b8 | 811 | SVf_UTF8), \ |
a0d0e21e | 812 | SvOOK_off(sv)) |
79072805 | 813 | |
8990e307 LW |
814 | #define SvOKp(sv) (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) |
815 | #define SvIOKp(sv) (SvFLAGS(sv) & SVp_IOK) | |
7a4bba22 | 816 | #define SvIOKp_on(sv) (assert_not_glob(sv) SvRELEASE_IVX_(sv) \ |
765f542d | 817 | SvFLAGS(sv) |= SVp_IOK) |
8990e307 | 818 | #define SvNOKp(sv) (SvFLAGS(sv) & SVp_NOK) |
f7877b28 | 819 | #define SvNOKp_on(sv) (assert_not_glob(sv) SvFLAGS(sv) |= SVp_NOK) |
8990e307 | 820 | #define SvPOKp(sv) (SvFLAGS(sv) & SVp_POK) |
f7877b28 | 821 | #define SvPOKp_on(sv) (assert_not_ROK(sv) assert_not_glob(sv) \ |
906ed6d6 | 822 | SvFLAGS(sv) |= SVp_POK) |
463ee0b2 | 823 | |
79072805 | 824 | #define SvIOK(sv) (SvFLAGS(sv) & SVf_IOK) |
7a4bba22 | 825 | #define SvIOK_on(sv) (assert_not_glob(sv) SvRELEASE_IVX_(sv) \ |
765f542d | 826 | SvFLAGS(sv) |= (SVf_IOK|SVp_IOK)) |
25da4f38 | 827 | #define SvIOK_off(sv) (SvFLAGS(sv) &= ~(SVf_IOK|SVp_IOK|SVf_IVisUV)) |
0c34ef67 | 828 | #define SvIOK_only(sv) (SvOK_off(sv), \ |
a0d0e21e | 829 | SvFLAGS(sv) |= (SVf_IOK|SVp_IOK)) |
f7877b28 | 830 | #define SvIOK_only_UV(sv) (assert_not_glob(sv) SvOK_off_exc_UV(sv), \ |
25da4f38 | 831 | SvFLAGS(sv) |= (SVf_IOK|SVp_IOK)) |
70401c6b | 832 | |
25da4f38 IZ |
833 | #define SvIOK_UV(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV)) \ |
834 | == (SVf_IOK|SVf_IVisUV)) | |
28e5dec8 | 835 | #define SvUOK(sv) SvIOK_UV(sv) |
25da4f38 IZ |
836 | #define SvIOK_notUV(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV)) \ |
837 | == SVf_IOK) | |
838 | ||
839 | #define SvIsUV(sv) (SvFLAGS(sv) & SVf_IVisUV) | |
840 | #define SvIsUV_on(sv) (SvFLAGS(sv) |= SVf_IVisUV) | |
841 | #define SvIsUV_off(sv) (SvFLAGS(sv) &= ~SVf_IVisUV) | |
79072805 LW |
842 | |
843 | #define SvNOK(sv) (SvFLAGS(sv) & SVf_NOK) | |
f7877b28 NC |
844 | #define SvNOK_on(sv) (assert_not_glob(sv) \ |
845 | SvFLAGS(sv) |= (SVf_NOK|SVp_NOK)) | |
8990e307 | 846 | #define SvNOK_off(sv) (SvFLAGS(sv) &= ~(SVf_NOK|SVp_NOK)) |
0c34ef67 | 847 | #define SvNOK_only(sv) (SvOK_off(sv), \ |
a0d0e21e | 848 | SvFLAGS(sv) |= (SVf_NOK|SVp_NOK)) |
79072805 | 849 | |
914184e1 | 850 | /* |
fbf9f983 | 851 | =for apidoc Am|U32|SvUTF8|SV* sv |
3c813ed0 KW |
852 | Returns a U32 value indicating the UTF-8 status of an SV. If things are set-up |
853 | properly, this indicates whether or not the SV contains UTF-8 encoded data. | |
fd142383 DM |
854 | You should use this I<after> a call to SvPV() or one of its variants, in |
855 | case any call to string overloading updates the internal flag. | |
914184e1 JH |
856 | |
857 | =for apidoc Am|void|SvUTF8_on|SV *sv | |
1e54db1a | 858 | Turn on the UTF-8 status of an SV (the data is not changed, just the flag). |
d5ce4a7c | 859 | Do not use frivolously. |
914184e1 JH |
860 | |
861 | =for apidoc Am|void|SvUTF8_off|SV *sv | |
3c813ed0 KW |
862 | Unsets the UTF-8 status of an SV (the data is not changed, just the flag). |
863 | Do not use frivolously. | |
914184e1 JH |
864 | |
865 | =for apidoc Am|void|SvPOK_only_UTF8|SV* sv | |
d5ce4a7c | 866 | Tells an SV that it is a string and disables all other OK bits, |
1e54db1a | 867 | and leaves the UTF-8 status as it was. |
f1a1024e | 868 | |
914184e1 JH |
869 | =cut |
870 | */ | |
871 | ||
7a5fd60d NC |
872 | /* Ensure the return value of this macro does not clash with the GV_ADD* flags |
873 | in gv.h: */ | |
a7cb1f99 GS |
874 | #define SvUTF8(sv) (SvFLAGS(sv) & SVf_UTF8) |
875 | #define SvUTF8_on(sv) (SvFLAGS(sv) |= (SVf_UTF8)) | |
876 | #define SvUTF8_off(sv) (SvFLAGS(sv) &= ~(SVf_UTF8)) | |
5bc28da9 | 877 | |
79072805 | 878 | #define SvPOK(sv) (SvFLAGS(sv) & SVf_POK) |
f7877b28 | 879 | #define SvPOK_on(sv) (assert_not_ROK(sv) assert_not_glob(sv) \ |
906ed6d6 | 880 | SvFLAGS(sv) |= (SVf_POK|SVp_POK)) |
8990e307 | 881 | #define SvPOK_off(sv) (SvFLAGS(sv) &= ~(SVf_POK|SVp_POK)) |
f7877b28 | 882 | #define SvPOK_only(sv) (assert_not_ROK(sv) assert_not_glob(sv) \ |
dd2eae66 | 883 | SvFLAGS(sv) &= ~(SVf_OK| \ |
d41ff1b8 GS |
884 | SVf_IVisUV|SVf_UTF8), \ |
885 | SvFLAGS(sv) |= (SVf_POK|SVp_POK)) | |
f7877b28 | 886 | #define SvPOK_only_UTF8(sv) (assert_not_ROK(sv) assert_not_glob(sv) \ |
dd2eae66 | 887 | SvFLAGS(sv) &= ~(SVf_OK| \ |
d41ff1b8 | 888 | SVf_IVisUV), \ |
a0d0e21e | 889 | SvFLAGS(sv) |= (SVf_POK|SVp_POK)) |
79072805 | 890 | |
4f2da183 | 891 | #define SvVOK(sv) (SvMAGICAL(sv) \ |
b0a11fe1 RGS |
892 | && mg_find(sv,PERL_MAGIC_vstring)) |
893 | /* returns the vstring magic, if any */ | |
894 | #define SvVSTRING_mg(sv) (SvMAGICAL(sv) \ | |
4f2da183 | 895 | ? mg_find(sv,PERL_MAGIC_vstring) : NULL) |
b0a11fe1 | 896 | |
79072805 | 897 | #define SvOOK(sv) (SvFLAGS(sv) & SVf_OOK) |
a4f658f7 | 898 | #define SvOOK_on(sv) (SvFLAGS(sv) |= SVf_OOK) |
0c34ef67 | 899 | #define SvOOK_off(sv) ((void)(SvOOK(sv) && sv_backoff(sv))) |
79072805 | 900 | |
a0d0e21e LW |
901 | #define SvFAKE(sv) (SvFLAGS(sv) & SVf_FAKE) |
902 | #define SvFAKE_on(sv) (SvFLAGS(sv) |= SVf_FAKE) | |
903 | #define SvFAKE_off(sv) (SvFLAGS(sv) &= ~SVf_FAKE) | |
904 | ||
ed6116ce | 905 | #define SvROK(sv) (SvFLAGS(sv) & SVf_ROK) |
a0d0e21e | 906 | #define SvROK_on(sv) (SvFLAGS(sv) |= SVf_ROK) |
dd2eae66 | 907 | #define SvROK_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK)) |
79072805 | 908 | |
8990e307 LW |
909 | #define SvMAGICAL(sv) (SvFLAGS(sv) & (SVs_GMG|SVs_SMG|SVs_RMG)) |
910 | #define SvMAGICAL_on(sv) (SvFLAGS(sv) |= (SVs_GMG|SVs_SMG|SVs_RMG)) | |
911 | #define SvMAGICAL_off(sv) (SvFLAGS(sv) &= ~(SVs_GMG|SVs_SMG|SVs_RMG)) | |
79072805 | 912 | |
8990e307 LW |
913 | #define SvGMAGICAL(sv) (SvFLAGS(sv) & SVs_GMG) |
914 | #define SvGMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_GMG) | |
915 | #define SvGMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_GMG) | |
ed6116ce | 916 | |
8990e307 LW |
917 | #define SvSMAGICAL(sv) (SvFLAGS(sv) & SVs_SMG) |
918 | #define SvSMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_SMG) | |
919 | #define SvSMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_SMG) | |
ed6116ce | 920 | |
8990e307 LW |
921 | #define SvRMAGICAL(sv) (SvFLAGS(sv) & SVs_RMG) |
922 | #define SvRMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_RMG) | |
923 | #define SvRMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_RMG) | |
ed6116ce | 924 | |
a1cd65be | 925 | #define SvAMAGIC(sv) (SvROK(sv) && SvOBJECT(SvRV(sv)) && \ |
54c554f3 | 926 | HvAMAGIC(SvSTASH(SvRV(sv)))) |
a0d0e21e | 927 | |
0adc25b0 FC |
928 | /* To be used on the stashes themselves: */ |
929 | #define HvAMAGIC(hv) (SvFLAGS(hv) & SVf_AMAGIC) | |
930 | #define HvAMAGIC_on(hv) (SvFLAGS(hv) |= SVf_AMAGIC) | |
931 | #define HvAMAGIC_off(hv) (SvFLAGS(hv) &=~ SVf_AMAGIC) | |
932 | ||
4bac9ae4 CS |
933 | |
934 | #define SvPOK_nog(sv) ((SvFLAGS(sv) & (SVf_POK|SVs_GMG)) == SVf_POK) | |
935 | #define SvIOK_nog(sv) ((SvFLAGS(sv) & (SVf_IOK|SVs_GMG)) == SVf_IOK) | |
936 | #define SvUOK_nog(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV|SVs_GMG)) == (SVf_IOK|SVf_IVisUV)) | |
937 | #define SvNOK_nog(sv) ((SvFLAGS(sv) & (SVf_NOK|SVs_GMG)) == SVf_NOK) | |
938 | #define SvNIOK_nog(sv) (SvNIOK(sv) && !(SvFLAGS(sv) & SVs_GMG)) | |
939 | ||
940 | #define SvPOK_nogthink(sv) ((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST|SVs_GMG)) == SVf_POK) | |
941 | #define SvIOK_nogthink(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_THINKFIRST|SVs_GMG)) == SVf_IOK) | |
942 | #define SvUOK_nogthink(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV|SVf_THINKFIRST|SVs_GMG)) == (SVf_IOK|SVf_IVisUV)) | |
943 | #define SvNOK_nogthink(sv) ((SvFLAGS(sv) & (SVf_NOK|SVf_THINKFIRST|SVs_GMG)) == SVf_NOK) | |
944 | #define SvNIOK_nogthink(sv) (SvNIOK(sv) && !(SvFLAGS(sv) & (SVf_THINKFIRST|SVs_GMG))) | |
945 | ||
946 | #define SvPOK_utf8_nog(sv) ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVs_GMG)) == (SVf_POK|SVf_UTF8)) | |
947 | #define SvPOK_utf8_nogthink(sv) ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVf_THINKFIRST|SVs_GMG)) == (SVf_POK|SVf_UTF8)) | |
948 | ||
949 | #define SvPOK_byte_nog(sv) ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVs_GMG)) == SVf_POK) | |
950 | #define SvPOK_byte_nogthink(sv) ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVf_THINKFIRST|SVs_GMG)) == SVf_POK) | |
951 | ||
8bb025ae CS |
952 | #define SvPOK_pure_nogthink(sv) \ |
953 | ((SvFLAGS(sv) & (SVf_POK|SVf_IOK|SVf_NOK|SVf_ROK|SVpgv_GP|SVf_THINKFIRST|SVs_GMG)) == SVf_POK) | |
954 | #define SvPOK_utf8_pure_nogthink(sv) \ | |
955 | ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVf_IOK|SVf_NOK|SVf_ROK|SVpgv_GP|SVf_THINKFIRST|SVs_GMG)) == (SVf_POK|SVf_UTF8)) | |
956 | #define SvPOK_byte_pure_nogthink(sv) \ | |
957 | ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVf_IOK|SVf_NOK|SVf_ROK|SVpgv_GP|SVf_THINKFIRST|SVs_GMG)) == SVf_POK) | |
958 | ||
d34786ba | 959 | /* |
458b44e7 | 960 | =for apidoc Am|U32|SvGAMAGIC|SV* sv |
d34786ba | 961 | |
8554e7a0 FC |
962 | Returns true if the SV has get magic or |
963 | overloading. If either is true then | |
d34786ba | 964 | the scalar is active data, and has the potential to return a new value every |
8554e7a0 FC |
965 | time it is accessed. Hence you must be careful to |
966 | only read it once per user logical operation and work | |
967 | with that returned value. If neither is true then | |
d34786ba NC |
968 | the scalar's value cannot change unless written to. |
969 | ||
970 | =cut | |
971 | */ | |
972 | ||
dd2eae66 | 973 | #define SvGAMAGIC(sv) (SvGMAGICAL(sv) || SvAMAGIC(sv)) |
1426bbf4 | 974 | |
9299023c | 975 | #define Gv_AMG(stash) \ |
d3c7a87b FC |
976 | (HvNAME(stash) && Gv_AMupdate(stash,FALSE) \ |
977 | ? 1 \ | |
978 | : (HvAMAGIC_off(stash), 0)) | |
a0d0e21e | 979 | |
810b8aa5 GS |
980 | #define SvWEAKREF(sv) ((SvFLAGS(sv) & (SVf_ROK|SVprv_WEAKREF)) \ |
981 | == (SVf_ROK|SVprv_WEAKREF)) | |
982 | #define SvWEAKREF_on(sv) (SvFLAGS(sv) |= (SVf_ROK|SVprv_WEAKREF)) | |
983 | #define SvWEAKREF_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK|SVprv_WEAKREF)) | |
984 | ||
1ccdb730 NC |
985 | #define SvPCS_IMPORTED(sv) ((SvFLAGS(sv) & (SVf_ROK|SVprv_PCS_IMPORTED)) \ |
986 | == (SVf_ROK|SVprv_PCS_IMPORTED)) | |
987 | #define SvPCS_IMPORTED_on(sv) (SvFLAGS(sv) |= (SVf_ROK|SVprv_PCS_IMPORTED)) | |
988 | #define SvPCS_IMPORTED_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK|SVprv_PCS_IMPORTED)) | |
989 | ||
a11eaecb FC |
990 | /* |
991 | =for apidoc m|U32|SvTHINKFIRST|SV *sv | |
992 | ||
993 | A quick flag check to see whether an sv should be passed to sv_force_normal | |
994 | to be "downgraded" before SvIVX or SvPVX can be modified directly. | |
995 | ||
996 | For example, if your scalar is a reference and you want to modify the SvIVX | |
997 | slot, you can't just do SvROK_off, as that will leak the referent. | |
998 | ||
999 | This is used internally by various sv-modifying functions, such as | |
1000 | sv_setsv, sv_setiv and sv_pvn_force. | |
1001 | ||
1002 | One case that this does not handle is a gv without SvFAKE set. After | |
1003 | ||
1004 | if (SvTHINKFIRST(gv)) sv_force_normal(gv); | |
1005 | ||
1006 | it will still be a gv. | |
1007 | ||
1008 | SvTHINKFIRST sometimes produces false positives. In those cases | |
1009 | sv_force_normal does nothing. | |
1010 | ||
1011 | =cut | |
1012 | */ | |
1013 | ||
a0d0e21e | 1014 | #define SvTHINKFIRST(sv) (SvFLAGS(sv) & SVf_THINKFIRST) |
ed6116ce | 1015 | |
9a214eec DM |
1016 | #define SvPADMY(sv) (SvFLAGS(sv) & SVs_PADMY) |
1017 | #define SvPADMY_on(sv) (SvFLAGS(sv) |= SVs_PADMY) | |
d9d18af6 | 1018 | |
9a214eec | 1019 | /* SVs_PADTMP and SVs_PADSTALE share the same bit, mediated by SVs_PADMY */ |
ed6116ce | 1020 | |
9a214eec DM |
1021 | #define SvPADTMP(sv) ((SvFLAGS(sv) & (SVs_PADMY|SVs_PADTMP)) == SVs_PADTMP) |
1022 | #define SvPADSTALE(sv) ((SvFLAGS(sv) & (SVs_PADMY|SVs_PADSTALE)) \ | |
1023 | == (SVs_PADMY|SVs_PADSTALE)) | |
62bb6514 | 1024 | |
541377b1 FC |
1025 | #define SvPADTMP_on(sv) S_SvPADTMP_on(MUTABLE_SV(sv)) |
1026 | #define SvPADTMP_off(sv) S_SvPADTMP_off(MUTABLE_SV(sv)) | |
1027 | #define SvPADSTALE_on(sv) S_SvPADSTALE_on(MUTABLE_SV(sv)) | |
1028 | #define SvPADSTALE_off(sv) S_SvPADSTALE_off(MUTABLE_SV(sv)) | |
ed6116ce | 1029 | |
8990e307 LW |
1030 | #define SvTEMP(sv) (SvFLAGS(sv) & SVs_TEMP) |
1031 | #define SvTEMP_on(sv) (SvFLAGS(sv) |= SVs_TEMP) | |
1032 | #define SvTEMP_off(sv) (SvFLAGS(sv) &= ~SVs_TEMP) | |
79072805 | 1033 | |
8990e307 LW |
1034 | #define SvOBJECT(sv) (SvFLAGS(sv) & SVs_OBJECT) |
1035 | #define SvOBJECT_on(sv) (SvFLAGS(sv) |= SVs_OBJECT) | |
1036 | #define SvOBJECT_off(sv) (SvFLAGS(sv) &= ~SVs_OBJECT) | |
79072805 | 1037 | |
8990e307 LW |
1038 | #define SvREADONLY(sv) (SvFLAGS(sv) & SVf_READONLY) |
1039 | #define SvREADONLY_on(sv) (SvFLAGS(sv) |= SVf_READONLY) | |
1040 | #define SvREADONLY_off(sv) (SvFLAGS(sv) &= ~SVf_READONLY) | |
79072805 | 1041 | |
180488f8 | 1042 | #define SvSCREAM(sv) ((SvFLAGS(sv) & (SVp_SCREAM|SVp_POK)) == (SVp_SCREAM|SVp_POK)) |
8990e307 LW |
1043 | #define SvSCREAM_on(sv) (SvFLAGS(sv) |= SVp_SCREAM) |
1044 | #define SvSCREAM_off(sv) (SvFLAGS(sv) &= ~SVp_SCREAM) | |
79072805 | 1045 | |
74e0ddf7 NC |
1046 | #ifndef PERL_CORE |
1047 | # define SvCOMPILED(sv) 0 | |
1048 | # define SvCOMPILED_on(sv) | |
1049 | # define SvCOMPILED_off(sv) | |
1050 | #endif | |
79072805 | 1051 | |
25da4f38 IZ |
1052 | #define SvEVALED(sv) (SvFLAGS(sv) & SVrepl_EVAL) |
1053 | #define SvEVALED_on(sv) (SvFLAGS(sv) |= SVrepl_EVAL) | |
1054 | #define SvEVALED_off(sv) (SvFLAGS(sv) &= ~SVrepl_EVAL) | |
1055 | ||
85efc3a5 | 1056 | #if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) |
e9726144 | 1057 | # define SvVALID(sv) ({ const SV *const _svvalid = (const SV*)(sv); \ |
e5ae200f RU |
1058 | if (SvFLAGS(_svvalid) & SVpbm_VALID) \ |
1059 | assert(!isGV_with_GP(_svvalid)); \ | |
1060 | (SvFLAGS(_svvalid) & SVpbm_VALID); \ | |
85ffbbb0 | 1061 | }) |
b1bc3f34 | 1062 | # define SvVALID_on(sv) ({ SV *const _svvalid = MUTABLE_SV(sv); \ |
e5ae200f RU |
1063 | assert(!isGV_with_GP(_svvalid)); \ |
1064 | (SvFLAGS(_svvalid) |= SVpbm_VALID); \ | |
85ffbbb0 | 1065 | }) |
b1bc3f34 | 1066 | # define SvVALID_off(sv) ({ SV *const _svvalid = MUTABLE_SV(sv); \ |
e5ae200f RU |
1067 | assert(!isGV_with_GP(_svvalid)); \ |
1068 | (SvFLAGS(_svvalid) &= ~SVpbm_VALID); \ | |
85ffbbb0 NC |
1069 | }) |
1070 | ||
e9726144 | 1071 | # define SvTAIL(sv) ({ const SV *const _svtail = (const SV *)(sv); \ |
e5ae200f RU |
1072 | assert(SvTYPE(_svtail) != SVt_PVAV); \ |
1073 | assert(SvTYPE(_svtail) != SVt_PVHV); \ | |
78d0cf80 NC |
1074 | (SvFLAGS(sv) & (SVpbm_TAIL|SVpbm_VALID)) \ |
1075 | == (SVpbm_TAIL|SVpbm_VALID); \ | |
85efc3a5 NC |
1076 | }) |
1077 | #else | |
85ffbbb0 NC |
1078 | # define SvVALID(sv) (SvFLAGS(sv) & SVpbm_VALID) |
1079 | # define SvVALID_on(sv) (SvFLAGS(sv) |= SVpbm_VALID) | |
1080 | # define SvVALID_off(sv) (SvFLAGS(sv) &= ~SVpbm_VALID) | |
78d0cf80 | 1081 | # define SvTAIL(sv) ((SvFLAGS(sv) & (SVpbm_TAIL|SVpbm_VALID)) \ |
fe901688 | 1082 | == (SVpbm_TAIL|SVpbm_VALID)) |
78d0cf80 | 1083 | |
85efc3a5 | 1084 | #endif |
8990e307 LW |
1085 | #define SvTAIL_on(sv) (SvFLAGS(sv) |= SVpbm_TAIL) |
1086 | #define SvTAIL_off(sv) (SvFLAGS(sv) &= ~SVpbm_TAIL) | |
1087 | ||
8990e307 | 1088 | |
075bae1e NC |
1089 | #define SvPAD_TYPED(sv) \ |
1090 | ((SvFLAGS(sv) & (SVpad_NAME|SVpad_TYPED)) == (SVpad_NAME|SVpad_TYPED)) | |
00b1698f | 1091 | |
075bae1e NC |
1092 | #define SvPAD_OUR(sv) \ |
1093 | ((SvFLAGS(sv) & (SVpad_NAME|SVpad_OUR)) == (SVpad_NAME|SVpad_OUR)) | |
00b1698f | 1094 | |
952306ac RGS |
1095 | #define SvPAD_STATE(sv) \ |
1096 | ((SvFLAGS(sv) & (SVpad_NAME|SVpad_STATE)) == (SVpad_NAME|SVpad_STATE)) | |
a72e56b0 NC |
1097 | |
1098 | #if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) | |
1099 | # define SvPAD_TYPED_on(sv) ({ \ | |
b1bc3f34 | 1100 | SV *const _svpad = MUTABLE_SV(sv); \ |
e5ae200f RU |
1101 | assert(SvTYPE(_svpad) == SVt_PVMG); \ |
1102 | (SvFLAGS(_svpad) |= SVpad_NAME|SVpad_TYPED); \ | |
a72e56b0 NC |
1103 | }) |
1104 | #define SvPAD_OUR_on(sv) ({ \ | |
b1bc3f34 | 1105 | SV *const _svpad = MUTABLE_SV(sv); \ |
e5ae200f RU |
1106 | assert(SvTYPE(_svpad) == SVt_PVMG); \ |
1107 | (SvFLAGS(_svpad) |= SVpad_NAME|SVpad_OUR); \ | |
a72e56b0 NC |
1108 | }) |
1109 | #define SvPAD_STATE_on(sv) ({ \ | |
b1bc3f34 | 1110 | SV *const _svpad = MUTABLE_SV(sv); \ |
e5ae200f RU |
1111 | assert(SvTYPE(_svpad) == SVt_PVNV || SvTYPE(_svpad) == SVt_PVMG); \ |
1112 | (SvFLAGS(_svpad) |= SVpad_NAME|SVpad_STATE); \ | |
a72e56b0 NC |
1113 | }) |
1114 | #else | |
1115 | # define SvPAD_TYPED_on(sv) (SvFLAGS(sv) |= SVpad_NAME|SVpad_TYPED) | |
1116 | # define SvPAD_OUR_on(sv) (SvFLAGS(sv) |= SVpad_NAME|SVpad_OUR) | |
1117 | # define SvPAD_STATE_on(sv) (SvFLAGS(sv) |= SVpad_NAME|SVpad_STATE) | |
1118 | #endif | |
952306ac | 1119 | |
73d95100 | 1120 | #define SvOURSTASH(sv) \ |
e736a858 | 1121 | (SvPAD_OUR(sv) ? ((XPVMG*) SvANY(sv))->xmg_u.xmg_ourstash : NULL) |
73d95100 | 1122 | #define SvOURSTASH_set(sv, st) \ |
e736a858 | 1123 | STMT_START { \ |
2892acdb | 1124 | assert(SvTYPE(sv) == SVt_PVMG); \ |
e736a858 | 1125 | ((XPVMG*) SvANY(sv))->xmg_u.xmg_ourstash = st; \ |
035dab74 NC |
1126 | } STMT_END |
1127 | ||
ed6116ce LW |
1128 | #define SvRVx(sv) SvRV(sv) |
1129 | ||
f599b64b | 1130 | #ifdef PERL_DEBUG_COW |
8ed30cc1 DD |
1131 | /* Need -0.0 for SvNVX to preserve IEEE FP "negative zero" because |
1132 | +0.0 + -0.0 => +0.0 but -0.0 + -0.0 => -0.0 */ | |
771ba71a NC |
1133 | # define SvIVX(sv) (0 + ((XPVIV*) SvANY(sv))->xiv_iv) |
1134 | # define SvUVX(sv) (0 + ((XPVUV*) SvANY(sv))->xuv_uv) | |
58430790 | 1135 | # define SvNVX(sv) (-0.0 + ((XPVNV*) SvANY(sv))->xnv_u.xnv_nv) |
ac09da3b | 1136 | # define SvRV(sv) (0 + (sv)->sv_u.svu_rv) |
f19a12a3 | 1137 | # define SvRV_const(sv) (0 + (sv)->sv_u.svu_rv) |
c0e1089a | 1138 | /* Don't test the core XS code yet. */ |
771ba71a | 1139 | # if defined (PERL_CORE) && PERL_DEBUG_COW > 1 |
c7724415 | 1140 | # define SvPVX(sv) (0 + (assert_(!SvREADONLY(sv)) (sv)->sv_u.svu_pv)) |
771ba71a NC |
1141 | # else |
1142 | # define SvPVX(sv) SvPVX_mutable(sv) | |
1143 | # endif | |
771ba71a NC |
1144 | # define SvCUR(sv) (0 + ((XPV*) SvANY(sv))->xpv_cur) |
1145 | # define SvLEN(sv) (0 + ((XPV*) SvANY(sv))->xpv_len) | |
1146 | # define SvEND(sv) ((sv)->sv_u.svu_pv + ((XPV*)SvANY(sv))->xpv_cur) | |
1147 | ||
c7724415 FC |
1148 | # define SvMAGIC(sv) (0 + *(assert_(SvTYPE(sv) >= SVt_PVMG) &((XPVMG*) SvANY(sv))->xmg_u.xmg_magic)) |
1149 | # define SvSTASH(sv) (0 + *(assert_(SvTYPE(sv) >= SVt_PVMG) &((XPVMG*) SvANY(sv))->xmg_stash)) | |
f599b64b | 1150 | #else |
771ba71a NC |
1151 | # define SvLEN(sv) ((XPV*) SvANY(sv))->xpv_len |
1152 | # define SvEND(sv) ((sv)->sv_u.svu_pv + ((XPV*)SvANY(sv))->xpv_cur) | |
1153 | ||
05ef5f8f NC |
1154 | # if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) |
1155 | /* These get expanded inside other macros that already use a variable _sv */ | |
f7877b28 | 1156 | # define SvPVX(sv) \ |
d2c6dc5e | 1157 | (*({ SV *const _svpvx = MUTABLE_SV(sv); \ |
f1fb8741 | 1158 | assert(PL_valid_types_PVX[SvTYPE(_svpvx) & SVt_MASK]); \ |
e5ae200f | 1159 | assert(!isGV_with_GP(_svpvx)); \ |
5bb89d25 NC |
1160 | assert(!(SvTYPE(_svpvx) == SVt_PVIO \ |
1161 | && !(IoFLAGS(_svpvx) & IOf_FAKE_DIRP))); \ | |
e5ae200f | 1162 | &((_svpvx)->sv_u.svu_pv); \ |
f7877b28 | 1163 | })) |
08002bbf | 1164 | # define SvCUR(sv) \ |
b1bc3f34 | 1165 | (*({ const SV *const _svcur = (const SV *)(sv); \ |
8d919b0a FC |
1166 | assert(PL_valid_types_PVX[SvTYPE(_svcur) & SVt_MASK] \ |
1167 | || SvTYPE(_svcur) == SVt_REGEXP); \ | |
e5ae200f | 1168 | assert(!isGV_with_GP(_svcur)); \ |
6f7e8353 NC |
1169 | assert(!(SvTYPE(_svcur) == SVt_PVIO \ |
1170 | && !(IoFLAGS(_svcur) & IOf_FAKE_DIRP))); \ | |
b1bc3f34 | 1171 | &(((XPV*) MUTABLE_PTR(SvANY(_svcur)))->xpv_cur); \ |
08002bbf | 1172 | })) |
05ef5f8f | 1173 | # define SvIVX(sv) \ |
b1bc3f34 | 1174 | (*({ const SV *const _svivx = (const SV *)(sv); \ |
f1fb8741 | 1175 | assert(PL_valid_types_IVX[SvTYPE(_svivx) & SVt_MASK]); \ |
e5ae200f | 1176 | assert(!isGV_with_GP(_svivx)); \ |
b1bc3f34 | 1177 | &(((XPVIV*) MUTABLE_PTR(SvANY(_svivx)))->xiv_iv); \ |
05ef5f8f NC |
1178 | })) |
1179 | # define SvUVX(sv) \ | |
b1bc3f34 | 1180 | (*({ const SV *const _svuvx = (const SV *)(sv); \ |
f1fb8741 | 1181 | assert(PL_valid_types_IVX[SvTYPE(_svuvx) & SVt_MASK]); \ |
e5ae200f | 1182 | assert(!isGV_with_GP(_svuvx)); \ |
b1bc3f34 | 1183 | &(((XPVUV*) MUTABLE_PTR(SvANY(_svuvx)))->xuv_uv); \ |
05ef5f8f NC |
1184 | })) |
1185 | # define SvNVX(sv) \ | |
b1bc3f34 | 1186 | (*({ const SV *const _svnvx = (const SV *)(sv); \ |
f1fb8741 | 1187 | assert(PL_valid_types_NVX[SvTYPE(_svnvx) & SVt_MASK]); \ |
e5ae200f | 1188 | assert(!isGV_with_GP(_svnvx)); \ |
b1bc3f34 | 1189 | &(((XPVNV*) MUTABLE_PTR(SvANY(_svnvx)))->xnv_u.xnv_nv); \ |
05ef5f8f | 1190 | })) |
ac09da3b | 1191 | # define SvRV(sv) \ |
f19a12a3 | 1192 | (*({ SV *const _svrv = MUTABLE_SV(sv); \ |
f1fb8741 | 1193 | assert(PL_valid_types_RV[SvTYPE(_svrv) & SVt_MASK]); \ |
e5ae200f | 1194 | assert(!isGV_with_GP(_svrv)); \ |
6f7e8353 NC |
1195 | assert(!(SvTYPE(_svrv) == SVt_PVIO \ |
1196 | && !(IoFLAGS(_svrv) & IOf_FAKE_DIRP))); \ | |
e5ae200f | 1197 | &((_svrv)->sv_u.svu_rv); \ |
ac09da3b | 1198 | })) |
f19a12a3 MHM |
1199 | # define SvRV_const(sv) \ |
1200 | ({ const SV *const _svrv = (const SV *)(sv); \ | |
f1fb8741 | 1201 | assert(PL_valid_types_RV[SvTYPE(_svrv) & SVt_MASK]); \ |
f19a12a3 | 1202 | assert(!isGV_with_GP(_svrv)); \ |
6f7e8353 NC |
1203 | assert(!(SvTYPE(_svrv) == SVt_PVIO \ |
1204 | && !(IoFLAGS(_svrv) & IOf_FAKE_DIRP))); \ | |
f19a12a3 MHM |
1205 | (_svrv)->sv_u.svu_rv; \ |
1206 | }) | |
05ef5f8f | 1207 | # define SvMAGIC(sv) \ |
b1bc3f34 | 1208 | (*({ const SV *const _svmagic = (const SV *)(sv); \ |
e5ae200f RU |
1209 | assert(SvTYPE(_svmagic) >= SVt_PVMG); \ |
1210 | if(SvTYPE(_svmagic) == SVt_PVMG) \ | |
1211 | assert(!SvPAD_OUR(_svmagic)); \ | |
b1bc3f34 | 1212 | &(((XPVMG*) MUTABLE_PTR(SvANY(_svmagic)))->xmg_u.xmg_magic); \ |
05ef5f8f NC |
1213 | })) |
1214 | # define SvSTASH(sv) \ | |
b1bc3f34 | 1215 | (*({ const SV *const _svstash = (const SV *)(sv); \ |
e5ae200f | 1216 | assert(SvTYPE(_svstash) >= SVt_PVMG); \ |
b1bc3f34 | 1217 | &(((XPVMG*) MUTABLE_PTR(SvANY(_svstash)))->xmg_stash); \ |
05ef5f8f | 1218 | })) |
03687789 | 1219 | # else |
08002bbf NC |
1220 | # define SvPVX(sv) ((sv)->sv_u.svu_pv) |
1221 | # define SvCUR(sv) ((XPV*) SvANY(sv))->xpv_cur | |
05ef5f8f NC |
1222 | # define SvIVX(sv) ((XPVIV*) SvANY(sv))->xiv_iv |
1223 | # define SvUVX(sv) ((XPVUV*) SvANY(sv))->xuv_uv | |
58430790 | 1224 | # define SvNVX(sv) ((XPVNV*) SvANY(sv))->xnv_u.xnv_nv |
ac09da3b | 1225 | # define SvRV(sv) ((sv)->sv_u.svu_rv) |
f19a12a3 | 1226 | # define SvRV_const(sv) (0 + (sv)->sv_u.svu_rv) |
e736a858 | 1227 | # define SvMAGIC(sv) ((XPVMG*) SvANY(sv))->xmg_u.xmg_magic |
771ba71a | 1228 | # define SvSTASH(sv) ((XPVMG*) SvANY(sv))->xmg_stash |
03687789 | 1229 | # endif |
62703e72 NC |
1230 | #endif |
1231 | ||
06c0cc96 | 1232 | #ifndef PERL_POISON |
bb496845 SP |
1233 | /* Given that these two are new, there can't be any existing code using them |
1234 | * as LVALUEs */ | |
06c0cc96 NC |
1235 | # define SvPVX_mutable(sv) (0 + (sv)->sv_u.svu_pv) |
1236 | # define SvPVX_const(sv) ((const char*)(0 + (sv)->sv_u.svu_pv)) | |
1237 | #else | |
1238 | /* Except for the poison code, which uses & to scribble over the pointer after | |
1239 | free() is called. */ | |
1240 | # define SvPVX_mutable(sv) ((sv)->sv_u.svu_pv) | |
1241 | # define SvPVX_const(sv) ((const char*)((sv)->sv_u.svu_pv)) | |
1242 | #endif | |
bb496845 | 1243 | |
62703e72 NC |
1244 | #define SvIVXx(sv) SvIVX(sv) |
1245 | #define SvUVXx(sv) SvUVX(sv) | |
1246 | #define SvNVXx(sv) SvNVX(sv) | |
1247 | #define SvPVXx(sv) SvPVX(sv) | |
1248 | #define SvLENx(sv) SvLEN(sv) | |
1249 | #define SvENDx(sv) ((PL_Sv = (sv)), SvEND(PL_Sv)) | |
1250 | ||
1251 | ||
28e5dec8 JH |
1252 | /* Ask a scalar nicely to try to become an IV, if possible. |
1253 | Not guaranteed to stay returning void */ | |
1254 | /* Macro won't actually call sv_2iv if already IOK */ | |
1255 | #define SvIV_please(sv) \ | |
1256 | STMT_START {if (!SvIOKp(sv) && (SvNOK(sv) || SvPOK(sv))) \ | |
1257 | (void) SvIV(sv); } STMT_END | |
6f1401dc | 1258 | #define SvIV_please_nomg(sv) \ |
01f91bf2 FC |
1259 | (!SvIOKp(sv) && (SvNOK(sv) || SvPOK(sv)) \ |
1260 | ? (SvIV_nomg(sv), SvIOK(sv)) \ | |
8a68f328 | 1261 | : SvIOK(sv)) |
79072805 | 1262 | #define SvIV_set(sv, val) \ |
f1fb8741 DM |
1263 | STMT_START { \ |
1264 | assert(PL_valid_types_IV_set[SvTYPE(sv) & SVt_MASK]); \ | |
08002bbf | 1265 | assert(!isGV_with_GP(sv)); \ |
b19bbeda | 1266 | (((XPVIV*) SvANY(sv))->xiv_iv = (val)); } STMT_END |
79072805 | 1267 | #define SvNV_set(sv, val) \ |
f1fb8741 DM |
1268 | STMT_START { \ |
1269 | assert(PL_valid_types_NV_set[SvTYPE(sv) & SVt_MASK]); \ | |
08002bbf | 1270 | assert(!isGV_with_GP(sv)); \ |
58430790 | 1271 | (((XPVNV*)SvANY(sv))->xnv_u.xnv_nv = (val)); } STMT_END |
79072805 | 1272 | #define SvPV_set(sv, val) \ |
f1fb8741 DM |
1273 | STMT_START { \ |
1274 | assert(PL_valid_types_PVX[SvTYPE(sv) & SVt_MASK]); \ | |
08002bbf | 1275 | assert(!isGV_with_GP(sv)); \ |
6f7e8353 NC |
1276 | assert(!(SvTYPE(sv) == SVt_PVIO \ |
1277 | && !(IoFLAGS(sv) & IOf_FAKE_DIRP))); \ | |
339049b0 | 1278 | ((sv)->sv_u.svu_pv = (val)); } STMT_END |
607fa7f2 | 1279 | #define SvUV_set(sv, val) \ |
f1fb8741 DM |
1280 | STMT_START { \ |
1281 | assert(PL_valid_types_IV_set[SvTYPE(sv) & SVt_MASK]); \ | |
08002bbf | 1282 | assert(!isGV_with_GP(sv)); \ |
607fa7f2 | 1283 | (((XPVUV*)SvANY(sv))->xuv_uv = (val)); } STMT_END |
b162af07 | 1284 | #define SvRV_set(sv, val) \ |
f1fb8741 DM |
1285 | STMT_START { \ |
1286 | assert(PL_valid_types_RV[SvTYPE(sv) & SVt_MASK]); \ | |
08002bbf | 1287 | assert(!isGV_with_GP(sv)); \ |
6f7e8353 NC |
1288 | assert(!(SvTYPE(sv) == SVt_PVIO \ |
1289 | && !(IoFLAGS(sv) & IOf_FAKE_DIRP))); \ | |
339049b0 | 1290 | ((sv)->sv_u.svu_rv = (val)); } STMT_END |
b162af07 SP |
1291 | #define SvMAGIC_set(sv, val) \ |
1292 | STMT_START { assert(SvTYPE(sv) >= SVt_PVMG); \ | |
e736a858 | 1293 | (((XPVMG*)SvANY(sv))->xmg_u.xmg_magic = (val)); } STMT_END |
b162af07 SP |
1294 | #define SvSTASH_set(sv, val) \ |
1295 | STMT_START { assert(SvTYPE(sv) >= SVt_PVMG); \ | |
1296 | (((XPVMG*) SvANY(sv))->xmg_stash = (val)); } STMT_END | |
79072805 | 1297 | #define SvCUR_set(sv, val) \ |
f1fb8741 | 1298 | STMT_START { \ |
8d919b0a FC |
1299 | assert(PL_valid_types_PVX[SvTYPE(sv) & SVt_MASK] \ |
1300 | || SvTYPE(sv) == SVt_REGEXP); \ | |
08002bbf | 1301 | assert(!isGV_with_GP(sv)); \ |
6f7e8353 NC |
1302 | assert(!(SvTYPE(sv) == SVt_PVIO \ |
1303 | && !(IoFLAGS(sv) & IOf_FAKE_DIRP))); \ | |
b162af07 | 1304 | (((XPV*) SvANY(sv))->xpv_cur = (val)); } STMT_END |
79072805 | 1305 | #define SvLEN_set(sv, val) \ |
f1fb8741 DM |
1306 | STMT_START { \ |
1307 | assert(PL_valid_types_PVX[SvTYPE(sv) & SVt_MASK]); \ | |
f7877b28 | 1308 | assert(!isGV_with_GP(sv)); \ |
6f7e8353 NC |
1309 | assert(!(SvTYPE(sv) == SVt_PVIO \ |
1310 | && !(IoFLAGS(sv) & IOf_FAKE_DIRP))); \ | |
b162af07 | 1311 | (((XPV*) SvANY(sv))->xpv_len = (val)); } STMT_END |
7ae8ee9e NC |
1312 | #define SvEND_set(sv, val) \ |
1313 | STMT_START { assert(SvTYPE(sv) >= SVt_PV); \ | |
3ec35e0f | 1314 | SvCUR_set(sv, (val) - SvPVX(sv)); } STMT_END |
79072805 | 1315 | |
b7e9a5c2 | 1316 | #define SvPV_renew(sv,n) \ |
1da4ca5f NC |
1317 | STMT_START { SvLEN_set(sv, n); \ |
1318 | SvPV_set((sv), (MEM_WRAP_CHECK_(n,char) \ | |
1319 | (char*)saferealloc((Malloc_t)SvPVX(sv), \ | |
1320 | (MEM_SIZE)((n))))); \ | |
1321 | } STMT_END | |
1322 | ||
1323 | #define SvPV_shrink_to_cur(sv) STMT_START { \ | |
1324 | const STRLEN _lEnGtH = SvCUR(sv) + 1; \ | |
1325 | SvPV_renew(sv, _lEnGtH); \ | |
1326 | } STMT_END | |
b7e9a5c2 | 1327 | |
771ba71a NC |
1328 | #define SvPV_free(sv) \ |
1329 | STMT_START { \ | |
1330 | assert(SvTYPE(sv) >= SVt_PV); \ | |
1331 | if (SvLEN(sv)) { \ | |
e537ac38 | 1332 | assert(!SvROK(sv)); \ |
771ba71a | 1333 | if(SvOOK(sv)) { \ |
69240efd NC |
1334 | STRLEN zok; \ |
1335 | SvOOK_offset(sv, zok); \ | |
1336 | SvPV_set(sv, SvPVX_mutable(sv) - zok); \ | |
771ba71a NC |
1337 | SvFLAGS(sv) &= ~SVf_OOK; \ |
1338 | } \ | |
1339 | Safefree(SvPVX(sv)); \ | |
1340 | } \ | |
1341 | } STMT_END | |
8bd4d4c5 | 1342 | |
43230e26 NC |
1343 | #ifdef PERL_CORE |
1344 | /* Code that crops up in three places to take a scalar and ready it to hold | |
1345 | a reference */ | |
1346 | # define prepare_SV_for_RV(sv) \ | |
1347 | STMT_START { \ | |
1348 | if (SvTYPE(sv) < SVt_PV && SvTYPE(sv) != SVt_IV) \ | |
1349 | sv_upgrade(sv, SVt_IV); \ | |
662f1f9e | 1350 | else if (SvTYPE(sv) >= SVt_PV) { \ |
43230e26 NC |
1351 | SvPV_free(sv); \ |
1352 | SvLEN_set(sv, 0); \ | |
1353 | SvCUR_set(sv, 0); \ | |
1354 | } \ | |
1355 | } STMT_END | |
1356 | #endif | |
373b357f | 1357 | |
cffe132d NC |
1358 | #ifndef PERL_CORE |
1359 | # define BmFLAGS(sv) (SvTAIL(sv) ? FBMcf_TAIL : 0) | |
1360 | #endif | |
6976cee3 | 1361 | |
60c8298a NC |
1362 | #if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) |
1363 | # define BmRARE(sv) \ | |
b1bc3f34 | 1364 | (*({ SV *const _bmrare = MUTABLE_SV(sv); \ |
c13a5c80 | 1365 | assert(SvTYPE(_bmrare) == SVt_PVMG); \ |
e5ae200f | 1366 | assert(SvVALID(_bmrare)); \ |
c13a5c80 | 1367 | &(((XPVMG*) SvANY(_bmrare))->xnv_u.xbm_s.xbm_rare); \ |
60c8298a NC |
1368 | })) |
1369 | # define BmUSEFUL(sv) \ | |
b1bc3f34 | 1370 | (*({ SV *const _bmuseful = MUTABLE_SV(sv); \ |
c13a5c80 | 1371 | assert(SvTYPE(_bmuseful) == SVt_PVMG); \ |
e5ae200f RU |
1372 | assert(SvVALID(_bmuseful)); \ |
1373 | assert(!SvIOK(_bmuseful)); \ | |
c13a5c80 | 1374 | &(((XPVMG*) SvANY(_bmuseful))->xnv_u.xbm_s.xbm_useful); \ |
60c8298a NC |
1375 | })) |
1376 | # define BmPREVIOUS(sv) \ | |
b1bc3f34 | 1377 | (*({ SV *const _bmprevious = MUTABLE_SV(sv); \ |
c13a5c80 | 1378 | assert(SvTYPE(_bmprevious) == SVt_PVMG); \ |
e5ae200f | 1379 | assert(SvVALID(_bmprevious)); \ |
c13a5c80 | 1380 | &(((XPVMG*) SvANY(_bmprevious))->xiv_u.xivu_uv); \ |
8eeaf79a | 1381 | })) |
60c8298a | 1382 | #else |
c13a5c80 NC |
1383 | # define BmRARE(sv) ((XPVMG*) SvANY(sv))->xnv_u.xbm_s.xbm_rare |
1384 | # define BmUSEFUL(sv) ((XPVMG*) SvANY(sv))->xnv_u.xbm_s.xbm_useful | |
1385 | # define BmPREVIOUS(sv) ((XPVMG*) SvANY(sv))->xiv_u.xivu_uv | |
b4f6c04b | 1386 | |
60c8298a | 1387 | #endif |
79072805 | 1388 | |
f2da823f | 1389 | #define FmLINES(sv) ((XPVIV*) SvANY(sv))->xiv_iv |
79072805 LW |
1390 | |
1391 | #define LvTYPE(sv) ((XPVLV*) SvANY(sv))->xlv_type | |
1392 | #define LvTARG(sv) ((XPVLV*) SvANY(sv))->xlv_targ | |
1393 | #define LvTARGOFF(sv) ((XPVLV*) SvANY(sv))->xlv_targoff | |
1394 | #define LvTARGLEN(sv) ((XPVLV*) SvANY(sv))->xlv_targlen | |
83f78d1a | 1395 | #define LvFLAGS(sv) ((XPVLV*) SvANY(sv))->xlv_flags |
79072805 | 1396 | |
6f7e8353 | 1397 | #define IoIFP(sv) (sv)->sv_u.svu_fp |
8990e307 LW |
1398 | #define IoOFP(sv) ((XPVIO*) SvANY(sv))->xio_ofp |
1399 | #define IoDIRP(sv) ((XPVIO*) SvANY(sv))->xio_dirp | |
4755096e | 1400 | #define IoANY(sv) ((XPVIO*) SvANY(sv))->xio_any |
c490b21c | 1401 | #define IoLINES(sv) ((XPVIO*) SvANY(sv))->xiv_u.xivu_iv |
8990e307 LW |
1402 | #define IoPAGE(sv) ((XPVIO*) SvANY(sv))->xio_page |
1403 | #define IoPAGE_LEN(sv) ((XPVIO*) SvANY(sv))->xio_page_len | |
1404 | #define IoLINES_LEFT(sv)((XPVIO*) SvANY(sv))->xio_lines_left | |
1405 | #define IoTOP_NAME(sv) ((XPVIO*) SvANY(sv))->xio_top_name | |
1406 | #define IoTOP_GV(sv) ((XPVIO*) SvANY(sv))->xio_top_gv | |
1407 | #define IoFMT_NAME(sv) ((XPVIO*) SvANY(sv))->xio_fmt_name | |
1408 | #define IoFMT_GV(sv) ((XPVIO*) SvANY(sv))->xio_fmt_gv | |
1409 | #define IoBOTTOM_NAME(sv)((XPVIO*) SvANY(sv))->xio_bottom_name | |
1410 | #define IoBOTTOM_GV(sv) ((XPVIO*) SvANY(sv))->xio_bottom_gv | |
8990e307 LW |
1411 | #define IoTYPE(sv) ((XPVIO*) SvANY(sv))->xio_type |
1412 | #define IoFLAGS(sv) ((XPVIO*) SvANY(sv))->xio_flags | |
1413 | ||
50952442 | 1414 | /* IoTYPE(sv) is a single character telling the type of I/O connection. */ |
3b6c1aba JH |
1415 | #define IoTYPE_RDONLY '<' |
1416 | #define IoTYPE_WRONLY '>' | |
1417 | #define IoTYPE_RDWR '+' | |
1418 | #define IoTYPE_APPEND 'a' | |
1419 | #define IoTYPE_PIPE '|' | |
1420 | #define IoTYPE_STD '-' /* stdin or stdout */ | |
1421 | #define IoTYPE_SOCKET 's' | |
1422 | #define IoTYPE_CLOSED ' ' | |
1423 | #define IoTYPE_IMPLICIT 'I' /* stdin or stdout or stderr */ | |
1424 | #define IoTYPE_NUMERIC '#' /* fdopen */ | |
03fcf2fc GS |
1425 | |
1426 | /* | |
954c1994 | 1427 | =for apidoc Am|bool|SvTAINTED|SV* sv |
8554e7a0 | 1428 | Checks to see if an SV is tainted. Returns TRUE if it is, FALSE if |
954c1994 GS |
1429 | not. |
1430 | ||
1431 | =for apidoc Am|void|SvTAINTED_on|SV* sv | |
c55831ac | 1432 | Marks an SV as tainted if tainting is enabled. |
954c1994 GS |
1433 | |
1434 | =for apidoc Am|void|SvTAINTED_off|SV* sv | |
8554e7a0 FC |
1435 | Untaints an SV. Be I<very> careful with this routine, as it short-circuits |
1436 | some of Perl's fundamental security features. XS module authors should not | |
954c1994 GS |
1437 | use this function unless they fully understand all the implications of |
1438 | unconditionally untainting the value. Untainting should be done in the | |
1439 | standard perl fashion, via a carefully crafted regexp, rather than directly | |
1440 | untainting variables. | |
1441 | ||
1442 | =for apidoc Am|void|SvTAINT|SV* sv | |
c98cdb04 FC |
1443 | Taints an SV if tainting is enabled, and if some input to the current |
1444 | expression is tainted--usually a variable, but possibly also implicit | |
1445 | inputs such as locale settings. C<SvTAINT> propagates that taintedness to | |
1446 | the outputs of an expression in a pessimistic fashion; i.e., without paying | |
1447 | attention to precisely which outputs are influenced by which inputs. | |
954c1994 GS |
1448 | |
1449 | =cut | |
1450 | */ | |
1451 | ||
a0714e2c | 1452 | #define sv_taint(sv) sv_magic((sv), NULL, PERL_MAGIC_taint, NULL, 0) |
aae9cea0 | 1453 | |
284167a5 S |
1454 | #if NO_TAINT_SUPPORT |
1455 | # define SvTAINTED(sv) 0 | |
1456 | #else | |
1457 | # define SvTAINTED(sv) (SvMAGICAL(sv) && sv_tainted(sv)) | |
1458 | #endif | |
1459 | #define SvTAINTED_on(sv) STMT_START{ if(TAINTING_get){sv_taint(sv);} }STMT_END | |
1460 | #define SvTAINTED_off(sv) STMT_START{ if(TAINTING_get){sv_untaint(sv);} }STMT_END | |
bbce6d69 | 1461 | |
c6ee37c5 MB |
1462 | #define SvTAINT(sv) \ |
1463 | STMT_START { \ | |
284167a5 S |
1464 | if (TAINTING_get) { \ |
1465 | if (TAINT_get) \ | |
c6ee37c5 MB |
1466 | SvTAINTED_on(sv); \ |
1467 | } \ | |
1468 | } STMT_END | |
79072805 | 1469 | |
954c1994 GS |
1470 | /* |
1471 | =for apidoc Am|char*|SvPV_force|SV* sv|STRLEN len | |
8bb025ae | 1472 | Like C<SvPV> but will force the SV into containing a string (C<SvPOK>), and |
fd142383 | 1473 | only a string (C<SvPOK_only>), by hook or by crook. You need force if you are |
8bb025ae | 1474 | going to update the C<SvPVX> directly. Processes get magic. |
954c1994 | 1475 | |
fd142383 DM |
1476 | Note that coercing an arbitrary scalar into a plain PV will potentially |
1477 | strip useful data from it. For example if the SV was C<SvROK>, then the | |
1478 | referent will have its reference count decremented, and the SV itself may | |
1479 | be converted to an C<SvPOK> scalar with a string buffer containing a value | |
1480 | such as C<"ARRAY(0x1234)">. | |
1481 | ||
645c22ef | 1482 | =for apidoc Am|char*|SvPV_force_nomg|SV* sv|STRLEN len |
fd142383 | 1483 | Like C<SvPV_force>, but doesn't process get magic. |
645c22ef | 1484 | |
954c1994 | 1485 | =for apidoc Am|char*|SvPV|SV* sv|STRLEN len |
5f08bad4 ST |
1486 | Returns a pointer to the string in the SV, or a stringified form of |
1487 | the SV if the SV does not contain a string. The SV may cache the | |
8554e7a0 | 1488 | stringified version becoming C<SvPOK>. Handles 'get' magic. See also |
645c22ef DM |
1489 | C<SvPVx> for a version which guarantees to evaluate sv only once. |
1490 | ||
fd142383 | 1491 | Note that there is no guarantee that the return value of C<SvPV()> is |
fe02ddb7 DM |
1492 | equal to C<SvPVX(sv)>, or that C<SvPVX(sv)> contains valid data, or that |
1493 | successive calls to C<SvPV(sv)) will return the same pointer value each | |
1494 | time. This is due to the way that things like overloading and | |
1495 | Copy-On-Write are handled. In these cases, the return value may point to | |
1496 | a temporary buffer or similar. If you absolutely need the SvPVX field to | |
1497 | be valid (for example, if you intend to write to it), then see | |
1498 | L</SvPV_force>. | |
fd142383 | 1499 | |
645c22ef | 1500 | =for apidoc Am|char*|SvPVx|SV* sv|STRLEN len |
4ea561bc NC |
1501 | A version of C<SvPV> which guarantees to evaluate C<sv> only once. |
1502 | Only use this if C<sv> is an expression with side effects, otherwise use the | |
b3adf4c0 | 1503 | more efficient C<SvPV>. |
954c1994 | 1504 | |
891f9566 YST |
1505 | =for apidoc Am|char*|SvPV_nomg|SV* sv|STRLEN len |
1506 | Like C<SvPV> but doesn't process magic. | |
1507 | ||
954c1994 | 1508 | =for apidoc Am|char*|SvPV_nolen|SV* sv |
fd142383 | 1509 | Like C<SvPV> but doesn't set a length variable. |
954c1994 | 1510 | |
71eb6d8c TC |
1511 | =for apidoc Am|char*|SvPV_nomg_nolen|SV* sv |
1512 | Like C<SvPV_nolen> but doesn't process magic. | |
1513 | ||
954c1994 | 1514 | =for apidoc Am|IV|SvIV|SV* sv |
8554e7a0 | 1515 | Coerces the given SV to an integer and returns it. See C<SvIVx> for a |
645c22ef DM |
1516 | version which guarantees to evaluate sv only once. |
1517 | ||
891f9566 YST |
1518 | =for apidoc Am|IV|SvIV_nomg|SV* sv |
1519 | Like C<SvIV> but doesn't process magic. | |
1520 | ||
645c22ef | 1521 | =for apidoc Am|IV|SvIVx|SV* sv |
8554e7a0 FC |
1522 | Coerces the given SV to an integer and returns it. |
1523 | Guarantees to evaluate C<sv> only once. Only use | |
1524 | this if C<sv> is an expression with side effects, | |
4ea561bc | 1525 | otherwise use the more efficient C<SvIV>. |
954c1994 GS |
1526 | |
1527 | =for apidoc Am|NV|SvNV|SV* sv | |
8554e7a0 | 1528 | Coerce the given SV to a double and return it. See C<SvNVx> for a version |
645c22ef DM |
1529 | which guarantees to evaluate sv only once. |
1530 | ||
6f1401dc DM |
1531 | =for apidoc Am|NV|SvNV_nomg|SV* sv |
1532 | Like C<SvNV> but doesn't process magic. | |
1533 | ||
645c22ef | 1534 | =for apidoc Am|NV|SvNVx|SV* sv |
8554e7a0 FC |
1535 | Coerces the given SV to a double and returns it. |
1536 | Guarantees to evaluate C<sv> only once. Only use | |
1537 | this if C<sv> is an expression with side effects, | |
4ea561bc | 1538 | otherwise use the more efficient C<SvNV>. |
954c1994 GS |
1539 | |
1540 | =for apidoc Am|UV|SvUV|SV* sv | |
645c22ef DM |
1541 | Coerces the given SV to an unsigned integer and returns it. See C<SvUVx> |
1542 | for a version which guarantees to evaluate sv only once. | |
1543 | ||
891f9566 YST |
1544 | =for apidoc Am|UV|SvUV_nomg|SV* sv |
1545 | Like C<SvUV> but doesn't process magic. | |
1546 | ||
645c22ef | 1547 | =for apidoc Am|UV|SvUVx|SV* sv |
8554e7a0 | 1548 | Coerces the given SV to an unsigned integer and |
feba1f01 | 1549 | returns it. Guarantees to evaluate C<sv> only once. Only |
8554e7a0 | 1550 | use this if C<sv> is an expression with side effects, |
4ea561bc | 1551 | otherwise use the more efficient C<SvUV>. |
954c1994 GS |
1552 | |
1553 | =for apidoc Am|bool|SvTRUE|SV* sv | |
1554 | Returns a boolean indicating whether Perl would evaluate the SV as true or | |
06c841cf FC |
1555 | false. See SvOK() for a defined/undefined test. Handles 'get' magic |
1556 | unless the scalar is already SvPOK, SvIOK or SvNOK (the public, not the | |
1557 | private flags). | |
1558 | ||
1559 | =for apidoc Am|bool|SvTRUE_nomg|SV* sv | |
1560 | Returns a boolean indicating whether Perl would evaluate the SV as true or | |
c0b6140e | 1561 | false. See SvOK() for a defined/undefined test. Does not handle 'get' magic. |
954c1994 | 1562 | |
645c22ef | 1563 | =for apidoc Am|char*|SvPVutf8_force|SV* sv|STRLEN len |
b70b15d2 | 1564 | Like C<SvPV_force>, but converts sv to utf8 first if necessary. |
645c22ef DM |
1565 | |
1566 | =for apidoc Am|char*|SvPVutf8|SV* sv|STRLEN len | |
b70b15d2 | 1567 | Like C<SvPV>, but converts sv to utf8 first if necessary. |
645c22ef | 1568 | |
b70b15d2 TJ |
1569 | =for apidoc Am|char*|SvPVutf8_nolen|SV* sv |
1570 | Like C<SvPV_nolen>, but converts sv to utf8 first if necessary. | |
645c22ef DM |
1571 | |
1572 | =for apidoc Am|char*|SvPVbyte_force|SV* sv|STRLEN len | |
1573 | Like C<SvPV_force>, but converts sv to byte representation first if necessary. | |
1574 | ||
1575 | =for apidoc Am|char*|SvPVbyte|SV* sv|STRLEN len | |
1576 | Like C<SvPV>, but converts sv to byte representation first if necessary. | |
1577 | ||
b70b15d2 | 1578 | =for apidoc Am|char*|SvPVbyte_nolen|SV* sv |
645c22ef DM |
1579 | Like C<SvPV_nolen>, but converts sv to byte representation first if necessary. |
1580 | ||
1581 | =for apidoc Am|char*|SvPVutf8x_force|SV* sv|STRLEN len | |
b70b15d2 | 1582 | Like C<SvPV_force>, but converts sv to utf8 first if necessary. |
d1be9408 | 1583 | Guarantees to evaluate sv only once; use the more efficient C<SvPVutf8_force> |
645c22ef DM |
1584 | otherwise. |
1585 | ||
1586 | =for apidoc Am|char*|SvPVutf8x|SV* sv|STRLEN len | |
b70b15d2 | 1587 | Like C<SvPV>, but converts sv to utf8 first if necessary. |
d1be9408 | 1588 | Guarantees to evaluate sv only once; use the more efficient C<SvPVutf8> |
645c22ef DM |
1589 | otherwise. |
1590 | ||
1591 | =for apidoc Am|char*|SvPVbytex_force|SV* sv|STRLEN len | |
1592 | Like C<SvPV_force>, but converts sv to byte representation first if necessary. | |
d1be9408 | 1593 | Guarantees to evaluate sv only once; use the more efficient C<SvPVbyte_force> |
645c22ef DM |
1594 | otherwise. |
1595 | ||
1596 | =for apidoc Am|char*|SvPVbytex|SV* sv|STRLEN len | |
1597 | Like C<SvPV>, but converts sv to byte representation first if necessary. | |
d1be9408 | 1598 | Guarantees to evaluate sv only once; use the more efficient C<SvPVbyte> |
645c22ef DM |
1599 | otherwise. |
1600 | ||
19dbb8f1 | 1601 | =for apidoc Am|bool|SvIsCOW|SV* sv |
8554e7a0 | 1602 | Returns a boolean indicating whether the SV is Copy-On-Write (either shared |
19dbb8f1 | 1603 | hash key scalars, or full Copy On Write scalars if 5.9.0 is configured for |
8554e7a0 | 1604 | COW). |
19dbb8f1 NC |
1605 | |
1606 | =for apidoc Am|bool|SvIsCOW_shared_hash|SV* sv | |
1607 | Returns a boolean indicating whether the SV is Copy-On-Write shared hash key | |
1608 | scalar. | |
645c22ef | 1609 | |
0f76ff59 MHM |
1610 | =for apidoc Am|void|sv_catpvn_nomg|SV* sv|const char* ptr|STRLEN len |
1611 | Like C<sv_catpvn> but doesn't process magic. | |
1612 | ||
9dcc53ea Z |
1613 | =for apidoc Am|void|sv_catpv_nomg|SV* sv|const char* ptr |
1614 | Like C<sv_catpv> but doesn't process magic. | |
1615 | ||
0f76ff59 MHM |
1616 | =for apidoc Am|void|sv_setsv_nomg|SV* dsv|SV* ssv |
1617 | Like C<sv_setsv> but doesn't process magic. | |
1618 | ||
1619 | =for apidoc Am|void|sv_catsv_nomg|SV* dsv|SV* ssv | |
1620 | Like C<sv_catsv> but doesn't process magic. | |
1621 | ||
dc960812 SP |
1622 | =for apidoc Amdb|STRLEN|sv_utf8_upgrade_nomg|NN SV *sv |
1623 | ||
8554e7a0 | 1624 | Like sv_utf8_upgrade, but doesn't do magic on C<sv>. |
dc960812 | 1625 | |
954c1994 GS |
1626 | =cut |
1627 | */ | |
1628 | ||
25da4f38 | 1629 | /* Let us hope that bitmaps for UV and IV are the same */ |
4bac9ae4 CS |
1630 | #define SvIV(sv) (SvIOK_nog(sv) ? SvIVX(sv) : sv_2iv(sv)) |
1631 | #define SvUV(sv) (SvUOK_nog(sv) ? SvUVX(sv) : sv_2uv(sv)) | |
1632 | #define SvNV(sv) (SvNOK_nog(sv) ? SvNVX(sv) : sv_2nv(sv)) | |
79072805 | 1633 | |
891f9566 YST |
1634 | #define SvIV_nomg(sv) (SvIOK(sv) ? SvIVX(sv) : sv_2iv_flags(sv, 0)) |
1635 | #define SvUV_nomg(sv) (SvIOK(sv) ? SvUVX(sv) : sv_2uv_flags(sv, 0)) | |
6f1401dc | 1636 | #define SvNV_nomg(sv) (SvNOK(sv) ? SvNVX(sv) : sv_2nv_flags(sv, 0)) |
891f9566 | 1637 | |
baca2b92 | 1638 | /* ----*/ |
8d6d96c1 | 1639 | |
4bac9ae4 CS |
1640 | #define SvPV(sv, lp) SvPV_flags(sv, lp, SV_GMAGIC) |
1641 | #define SvPV_const(sv, lp) SvPV_flags_const(sv, lp, SV_GMAGIC) | |
44d22300 | 1642 | #define SvPV_mutable(sv, lp) SvPV_flags_mutable(sv, lp, SV_GMAGIC) |
8d6d96c1 | 1643 | |
8d6d96c1 | 1644 | #define SvPV_flags(sv, lp, flags) \ |
4bac9ae4 | 1645 | (SvPOK_nog(sv) \ |
8d6d96c1 | 1646 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pv_flags(sv, &lp, flags)) |
32a5c6ec | 1647 | #define SvPV_flags_const(sv, lp, flags) \ |
4bac9ae4 | 1648 | (SvPOK_nog(sv) \ |
32a5c6ec NC |
1649 | ? ((lp = SvCUR(sv)), SvPVX_const(sv)) : \ |
1650 | (const char*) sv_2pv_flags(sv, &lp, flags|SV_CONST_RETURN)) | |
2596d9fe | 1651 | #define SvPV_flags_const_nolen(sv, flags) \ |
4bac9ae4 | 1652 | (SvPOK_nog(sv) \ |
2596d9fe NC |
1653 | ? SvPVX_const(sv) : \ |
1654 | (const char*) sv_2pv_flags(sv, 0, flags|SV_CONST_RETURN)) | |
44d22300 | 1655 | #define SvPV_flags_mutable(sv, lp, flags) \ |
4bac9ae4 | 1656 | (SvPOK_nog(sv) \ |
44d22300 NC |
1657 | ? ((lp = SvCUR(sv)), SvPVX_mutable(sv)) : \ |
1658 | sv_2pv_flags(sv, &lp, flags|SV_MUTABLE_RETURN)) | |
79072805 | 1659 | |
8d6d96c1 | 1660 | #define SvPV_force(sv, lp) SvPV_force_flags(sv, lp, SV_GMAGIC) |
13c5b33c | 1661 | #define SvPV_force_nolen(sv) SvPV_force_flags_nolen(sv, SV_GMAGIC) |
32a5c6ec | 1662 | #define SvPV_force_mutable(sv, lp) SvPV_force_flags_mutable(sv, lp, SV_GMAGIC) |
baca2b92 | 1663 | |
8d6d96c1 | 1664 | #define SvPV_force_nomg(sv, lp) SvPV_force_flags(sv, lp, 0) |
2596d9fe | 1665 | #define SvPV_force_nomg_nolen(sv) SvPV_force_flags_nolen(sv, 0) |
8d6d96c1 | 1666 | |
8d6d96c1 | 1667 | #define SvPV_force_flags(sv, lp, flags) \ |
8bb025ae | 1668 | (SvPOK_pure_nogthink(sv) \ |
4bac9ae4 CS |
1669 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvn_force_flags(sv, &lp, flags)) |
1670 | ||
13c5b33c | 1671 | #define SvPV_force_flags_nolen(sv, flags) \ |
8bb025ae | 1672 | (SvPOK_pure_nogthink(sv) \ |
4bac9ae4 CS |
1673 | ? SvPVX(sv) : sv_pvn_force_flags(sv, 0, flags)) |
1674 | ||
32a5c6ec | 1675 | #define SvPV_force_flags_mutable(sv, lp, flags) \ |
8bb025ae | 1676 | (SvPOK_pure_nogthink(sv) \ |
4bac9ae4 | 1677 | ? ((lp = SvCUR(sv)), SvPVX_mutable(sv)) \ |
32a5c6ec | 1678 | : sv_pvn_force_flags(sv, &lp, flags|SV_MUTABLE_RETURN)) |
a0d0e21e | 1679 | |
1fa8b10d | 1680 | #define SvPV_nolen(sv) \ |
4bac9ae4 | 1681 | (SvPOK_nog(sv) \ |
dafda6d1 | 1682 | ? SvPVX(sv) : sv_2pv_flags(sv, 0, SV_GMAGIC)) |
70401c6b | 1683 | |
71eb6d8c | 1684 | #define SvPV_nomg_nolen(sv) \ |
4bac9ae4 | 1685 | (SvPOK_nog(sv) \ |
71eb6d8c TC |
1686 | ? SvPVX(sv) : sv_2pv_flags(sv, 0, 0)) |
1687 | ||
9ce348e8 | 1688 | #define SvPV_nolen_const(sv) \ |
4bac9ae4 | 1689 | (SvPOK_nog(sv) \ |
9ce348e8 NC |
1690 | ? SvPVX_const(sv) : sv_2pv_flags(sv, 0, SV_GMAGIC|SV_CONST_RETURN)) |
1691 | ||
baca2b92 | 1692 | #define SvPV_nomg(sv, lp) SvPV_flags(sv, lp, 0) |
9ce348e8 | 1693 | #define SvPV_nomg_const(sv, lp) SvPV_flags_const(sv, lp, 0) |
2596d9fe | 1694 | #define SvPV_nomg_const_nolen(sv) SvPV_flags_const_nolen(sv, 0) |
5bc28da9 | 1695 | |
baca2b92 | 1696 | /* ----*/ |
70401c6b | 1697 | |
5bc28da9 | 1698 | #define SvPVutf8(sv, lp) \ |
4bac9ae4 | 1699 | (SvPOK_utf8_nog(sv) \ |
5bc28da9 | 1700 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pvutf8(sv, &lp)) |
70401c6b | 1701 | |
5bc28da9 | 1702 | #define SvPVutf8_force(sv, lp) \ |
8bb025ae | 1703 | (SvPOK_utf8_pure_nogthink(sv) \ |
5bc28da9 NIS |
1704 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvutf8n_force(sv, &lp)) |
1705 | ||
5bc28da9 | 1706 | #define SvPVutf8_nolen(sv) \ |
4bac9ae4 | 1707 | (SvPOK_utf8_nog(sv) \ |
dafda6d1 | 1708 | ? SvPVX(sv) : sv_2pvutf8(sv, 0)) |
70401c6b | 1709 | |
baca2b92 DM |
1710 | /* ----*/ |
1711 | ||
5bc28da9 | 1712 | #define SvPVbyte(sv, lp) \ |
4bac9ae4 | 1713 | (SvPOK_byte_nog(sv) \ |
5bc28da9 | 1714 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pvbyte(sv, &lp)) |
70401c6b | 1715 | |
5bc28da9 | 1716 | #define SvPVbyte_force(sv, lp) \ |
8bb025ae | 1717 | (SvPOK_byte_pure_nogthink(sv) \ |
a7ec4e2e | 1718 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvbyten_force(sv, &lp)) |
5bc28da9 | 1719 | |
5bc28da9 | 1720 | #define SvPVbyte_nolen(sv) \ |
4bac9ae4 | 1721 | (SvPOK_byte_nog(sv) \ |
dafda6d1 | 1722 | ? SvPVX(sv) : sv_2pvbyte(sv, 0)) |
70401c6b | 1723 | |
baca2b92 DM |
1724 | |
1725 | /* define FOOx(): idempotent versions of FOO(). If possible, use a local | |
1726 | * var to evaluate the arg once; failing that, use a global if possible; | |
1727 | * failing that, call a function to do the work | |
1728 | */ | |
1729 | ||
1730 | #define SvPVx_force(sv, lp) sv_pvn_force(sv, &lp) | |
1731 | #define SvPVutf8x_force(sv, lp) sv_pvutf8n_force(sv, &lp) | |
1732 | #define SvPVbytex_force(sv, lp) sv_pvbyten_force(sv, &lp) | |
1733 | ||
4bac9ae4 CS |
1734 | #define SvTRUE(sv) ((sv) && (SvGMAGICAL(sv) ? sv_2bool(sv) : SvTRUE_common(sv, sv_2bool_nomg(sv)))) |
1735 | #define SvTRUE_nomg(sv) ((sv) && ( SvTRUE_common(sv, sv_2bool_nomg(sv)))) | |
4cc783ef | 1736 | #define SvTRUE_NN(sv) (SvGMAGICAL(sv) ? sv_2bool(sv) : SvTRUE_common(sv, sv_2bool_nomg(sv))) |
716ae3b0 | 1737 | #define SvTRUE_nomg_NN(sv) ( SvTRUE_common(sv, sv_2bool_nomg(sv))) |
4bac9ae4 CS |
1738 | #define SvTRUE_common(sv,fallback) ( \ |
1739 | !SvOK(sv) \ | |
1740 | ? 0 \ | |
762dbf22 FC |
1741 | : SvPOK(sv) \ |
1742 | ? SvPVXtrue(sv) \ | |
1743 | : (SvFLAGS(sv) & (SVf_IOK|SVf_NOK)) \ | |
1744 | ? ( (SvIOK(sv) && SvIVX(sv) != 0) \ | |
4bac9ae4 CS |
1745 | || (SvNOK(sv) && SvNVX(sv) != 0.0)) \ |
1746 | : (fallback)) | |
1747 | ||
5dc8bdac | 1748 | #if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) |
baca2b92 | 1749 | |
b1bc3f34 NC |
1750 | # define SvIVx(sv) ({SV *_sv = MUTABLE_SV(sv); SvIV(_sv); }) |
1751 | # define SvUVx(sv) ({SV *_sv = MUTABLE_SV(sv); SvUV(_sv); }) | |
1752 | # define SvNVx(sv) ({SV *_sv = MUTABLE_SV(sv); SvNV(_sv); }) | |
3de3296f | 1753 | # define SvPVx(sv, lp) ({SV *_sv = (sv); SvPV(_sv, lp); }) |
32a5c6ec | 1754 | # define SvPVx_const(sv, lp) ({SV *_sv = (sv); SvPV_const(_sv, lp); }) |
002e4c74 | 1755 | # define SvPVx_nolen(sv) ({SV *_sv = (sv); SvPV_nolen(_sv); }) |
9ce348e8 | 1756 | # define SvPVx_nolen_const(sv) ({SV *_sv = (sv); SvPV_nolen_const(_sv); }) |
3de3296f AE |
1757 | # define SvPVutf8x(sv, lp) ({SV *_sv = (sv); SvPVutf8(_sv, lp); }) |
1758 | # define SvPVbytex(sv, lp) ({SV *_sv = (sv); SvPVbyte(_sv, lp); }) | |
002e4c74 | 1759 | # define SvPVbytex_nolen(sv) ({SV *_sv = (sv); SvPVbyte_nolen(_sv); }) |
4bac9ae4 CS |
1760 | # define SvTRUEx(sv) ({SV *_sv = (sv); SvTRUE(_sv); }) |
1761 | # define SvTRUEx_nomg(sv) ({SV *_sv = (sv); SvTRUE_nomg(_sv); }) | |
baca2b92 | 1762 | |
a80f87c4 | 1763 | #else /* __GNUC__ */ |
baca2b92 | 1764 | |
a80f87c4 GS |
1765 | /* These inlined macros use globals, which will require a thread |
1766 | * declaration in user code, so we avoid them under threads */ | |
1767 | ||
3db8f154 MB |
1768 | # define SvIVx(sv) ((PL_Sv = (sv)), SvIV(PL_Sv)) |
1769 | # define SvUVx(sv) ((PL_Sv = (sv)), SvUV(PL_Sv)) | |
1770 | # define SvNVx(sv) ((PL_Sv = (sv)), SvNV(PL_Sv)) | |
1771 | # define SvPVx(sv, lp) ((PL_Sv = (sv)), SvPV(PL_Sv, lp)) | |
32a5c6ec | 1772 | # define SvPVx_const(sv, lp) ((PL_Sv = (sv)), SvPV_const(PL_Sv, lp)) |
002e4c74 | 1773 | # define SvPVx_nolen(sv) ((PL_Sv = (sv)), SvPV_nolen(PL_Sv)) |
5f1478c3 | 1774 | # define SvPVx_nolen_const(sv) ((PL_Sv = (sv)), SvPV_nolen_const(PL_Sv)) |
3db8f154 MB |
1775 | # define SvPVutf8x(sv, lp) ((PL_Sv = (sv)), SvPVutf8(PL_Sv, lp)) |
1776 | # define SvPVbytex(sv, lp) ((PL_Sv = (sv)), SvPVbyte(PL_Sv, lp)) | |
002e4c74 | 1777 | # define SvPVbytex_nolen(sv) ((PL_Sv = (sv)), SvPVbyte_nolen(PL_Sv)) |
4bac9ae4 CS |
1778 | # define SvTRUEx(sv) ((PL_Sv = (sv)), SvTRUE(PL_Sv)) |
1779 | # define SvTRUEx_nomg(sv) ((PL_Sv = (sv)), SvTRUE_nomg(PL_Sv)) | |
baca2b92 DM |
1780 | #endif /* __GNU__ */ |
1781 | ||
630b72b0 DD |
1782 | #define SvPVXtrue(sv) ( \ |
1783 | ((XPV*)SvANY((sv))) \ | |
1784 | && ( \ | |
1785 | ((XPV*)SvANY((sv)))->xpv_cur > 1 \ | |
1786 | || ( \ | |
1787 | ((XPV*)SvANY((sv)))->xpv_cur \ | |
1788 | && *(sv)->sv_u.svu_pv != '0' \ | |
1789 | ) \ | |
1790 | ) \ | |
1791 | ) | |
1792 | ||
e3918bb7 FC |
1793 | #define SvIsCOW(sv) (SvFLAGS(sv) & SVf_IsCOW) |
1794 | #define SvIsCOW_on(sv) (SvFLAGS(sv) |= SVf_IsCOW) | |
1795 | #define SvIsCOW_off(sv) (SvFLAGS(sv) &= ~SVf_IsCOW) | |
46187eeb | 1796 | #define SvIsCOW_shared_hash(sv) (SvIsCOW(sv) && SvLEN(sv) == 0) |
baca2b92 | 1797 | |
bdd68bc3 NC |
1798 | #define SvSHARED_HEK_FROM_PV(pvx) \ |
1799 | ((struct hek*)(pvx - STRUCT_OFFSET(struct hek, hek_key))) | |
0a356b31 | 1800 | #define SvSHARED_HASH(sv) (0 + SvSHARED_HEK_FROM_PV(SvPVX_const(sv))->hek_hash) |
c158a4fd | 1801 | |
baca2b92 DM |
1802 | /* flag values for sv_*_flags functions */ |
1803 | #define SV_IMMEDIATE_UNREF 1 | |
1804 | #define SV_GMAGIC 2 | |
765f542d | 1805 | #define SV_COW_DROP_PV 4 |
88632417 | 1806 | #define SV_UTF8_NO_ENCODING 8 |
5fcdf167 | 1807 | #define SV_NOSTEAL 16 |
32a5c6ec NC |
1808 | #define SV_CONST_RETURN 32 |
1809 | #define SV_MUTABLE_RETURN 64 | |
bddd5118 | 1810 | #define SV_SMAGIC 128 |
c1c21316 | 1811 | #define SV_HAS_TRAILING_NUL 256 |
34482cd6 | 1812 | #define SV_COW_SHARED_HASH_KEYS 512 |
cb23d5b1 NC |
1813 | /* This one is only enabled for PERL_OLD_COPY_ON_WRITE */ |
1814 | #define SV_COW_OTHER_PVS 1024 | |
9f621bb0 NC |
1815 | /* Make sv_2pv_flags return NULL if something is undefined. */ |
1816 | #define SV_UNDEF_RETURNS_NULL 2048 | |
b3ab6785 KW |
1817 | /* Tell sv_utf8_upgrade() to not check to see if an upgrade is really needed. |
1818 | * This is used when the caller has already determined it is, and avoids | |
1819 | * redundant work */ | |
1820 | #define SV_FORCE_UTF8_UPGRADE 4096 | |
aee036bb DM |
1821 | /* if (after resolving magic etc), the SV is found to be overloaded, |
1822 | * don't call the overload magic, just return as-is */ | |
1823 | #define SV_SKIP_OVERLOAD 8192 | |
c682ebef FC |
1824 | /* It is not yet clear whether we want this as an API, or what the |
1825 | * constants should be named. */ | |
1826 | #ifdef PERL_CORE | |
1827 | # define SV_CATBYTES 16384 | |
1828 | # define SV_CATUTF8 32768 | |
1829 | #endif | |
34482cd6 NC |
1830 | |
1831 | /* The core is safe for this COW optimisation. XS code on CPAN may not be. | |
1832 | So only default to doing the COW setup if we're in the core. | |
1833 | */ | |
1834 | #ifdef PERL_CORE | |
1835 | # ifndef SV_DO_COW_SVSETSV | |
cb23d5b1 | 1836 | # define SV_DO_COW_SVSETSV SV_COW_SHARED_HASH_KEYS|SV_COW_OTHER_PVS |
34482cd6 NC |
1837 | # endif |
1838 | #endif | |
1839 | ||
1840 | #ifndef SV_DO_COW_SVSETSV | |
1841 | # define SV_DO_COW_SVSETSV 0 | |
1842 | #endif | |
1843 | ||
765f542d | 1844 | |
5abc721d NC |
1845 | #define sv_unref(sv) sv_unref_flags(sv, 0) |
1846 | #define sv_force_normal(sv) sv_force_normal_flags(sv, 0) | |
47518d95 NC |
1847 | #define sv_usepvn(sv, p, l) sv_usepvn_flags(sv, p, l, 0) |
1848 | #define sv_usepvn_mg(sv, p, l) sv_usepvn_flags(sv, p, l, SV_SMAGIC) | |
174c73e3 | 1849 | |
46187eeb NC |
1850 | /* We are about to replace the SV's current value. So if it's copy on write |
1851 | we need to normalise it. Use the SV_COW_DROP_PV flag hint to say that | |
1852 | the value is about to get thrown away, so drop the PV rather than go to | |
1853 | the effort of making a read-write copy only for it to get immediately | |
1854 | discarded. */ | |
765f542d NC |
1855 | |
1856 | #define SV_CHECK_THINKFIRST_COW_DROP(sv) if (SvTHINKFIRST(sv)) \ | |
1857 | sv_force_normal_flags(sv, SV_COW_DROP_PV) | |
46187eeb | 1858 | |
f8c7b90f | 1859 | #ifdef PERL_OLD_COPY_ON_WRITE |
5302ffd4 | 1860 | #define SvRELEASE_IVX(sv) \ |
7a4bba22 | 1861 | ((SvIsCOW(sv) ? sv_force_normal_flags(sv, 0) : (void) 0), 0) |
46187eeb | 1862 | # define SvIsCOW_normal(sv) (SvIsCOW(sv) && SvLEN(sv)) |
7a4bba22 | 1863 | # define SvRELEASE_IVX_(sv) SvRELEASE_IVX(sv), |
db2c6cb3 FC |
1864 | # define SvCANCOW(sv) \ |
1865 | (SvIsCOW(sv) || (SvFLAGS(sv) & CAN_COW_MASK) == CAN_COW_FLAGS) | |
f7a8268c FC |
1866 | /* This is a pessimistic view. Scalar must be purely a read-write PV to copy- |
1867 | on-write. */ | |
1868 | # define CAN_COW_MASK (SVs_OBJECT|SVs_GMG|SVs_SMG|SVs_RMG|SVf_IOK|SVf_NOK| \ | |
1869 | SVf_POK|SVf_ROK|SVp_IOK|SVp_NOK|SVp_POK|SVf_FAKE| \ | |
1870 | SVf_OOK|SVf_BREAK|SVf_READONLY) | |
b8f9541a | 1871 | #else |
7a4bba22 NC |
1872 | # define SvRELEASE_IVX(sv) 0 |
1873 | /* This little game brought to you by the need to shut this warning up: | |
1204f081 | 1874 | mg.c: In function 'Perl_magic_get': |
7a4bba22 NC |
1875 | mg.c:1024: warning: left-hand operand of comma expression has no effect |
1876 | */ | |
1877 | # define SvRELEASE_IVX_(sv) /**/ | |
db2c6cb3 FC |
1878 | # ifdef PERL_NEW_COPY_ON_WRITE |
1879 | # define SvCANCOW(sv) \ | |
1880 | (SvIsCOW(sv) \ | |
1881 | ? SvLEN(sv) ? CowREFCNT(sv) != SV_COW_REFCNT_MAX : 1 \ | |
1882 | : (SvFLAGS(sv) & CAN_COW_MASK) == CAN_COW_FLAGS \ | |
1883 | && SvCUR(sv)+1 < SvLEN(sv)) | |
1884 | /* Note: To allow 256 COW "copies", a refcnt of 0 means 1. */ | |
1885 | # define CowREFCNT(sv) (*(U8 *)(SvPVX(sv)+SvLEN(sv)-1)) | |
1886 | # define SV_COW_REFCNT_MAX ((1 << sizeof(U8)*8) - 1) | |
9fd2152b FC |
1887 | # ifndef SV_COW_THRESHOLD |
1888 | # define SV_COW_THRESHOLD 0 /* min string length for cow */ | |
1889 | # endif | |
1890 | # ifndef SV_COWBUF_THRESHOLD | |
1891 | # define SV_COWBUF_THRESHOLD 1250 /* min string length for cow */ | |
1892 | # endif /* over existing buffer */ | |
f7a8268c FC |
1893 | # define CAN_COW_MASK (SVf_POK|SVf_ROK|SVp_POK|SVf_FAKE| \ |
1894 | SVf_OOK|SVf_BREAK|SVf_READONLY) | |
db2c6cb3 | 1895 | # endif |
f8c7b90f | 1896 | #endif /* PERL_OLD_COPY_ON_WRITE */ |
ed252734 | 1897 | |
ed252734 NC |
1898 | #define CAN_COW_FLAGS (SVp_POK|SVf_POK) |
1899 | ||
765f542d NC |
1900 | #define SV_CHECK_THINKFIRST(sv) if (SvTHINKFIRST(sv)) \ |
1901 | sv_force_normal_flags(sv, 0) | |
1902 | ||
1903 | ||
baca2b92 DM |
1904 | /* all these 'functions' are now just macros */ |
1905 | ||
1906 | #define sv_pv(sv) SvPV_nolen(sv) | |
1907 | #define sv_pvutf8(sv) SvPVutf8_nolen(sv) | |
1908 | #define sv_pvbyte(sv) SvPVbyte_nolen(sv) | |
1909 | ||
1910 | #define sv_pvn_force_nomg(sv, lp) sv_pvn_force_flags(sv, lp, 0) | |
b3ab6785 | 1911 | #define sv_utf8_upgrade_flags(sv, flags) sv_utf8_upgrade_flags_grow(sv, flags, 0) |
baca2b92 DM |
1912 | #define sv_utf8_upgrade_nomg(sv) sv_utf8_upgrade_flags(sv, 0) |
1913 | #define sv_catpvn_nomg(dsv, sstr, slen) sv_catpvn_flags(dsv, sstr, slen, 0) | |
9dcc53ea | 1914 | #define sv_catpv_nomg(dsv, sstr) sv_catpv_flags(dsv, sstr, 0) |
34482cd6 NC |
1915 | #define sv_setsv(dsv, ssv) \ |
1916 | sv_setsv_flags(dsv, ssv, SV_GMAGIC|SV_DO_COW_SVSETSV) | |
1917 | #define sv_setsv_nomg(dsv, ssv) sv_setsv_flags(dsv, ssv, SV_DO_COW_SVSETSV) | |
baca2b92 DM |
1918 | #define sv_catsv(dsv, ssv) sv_catsv_flags(dsv, ssv, SV_GMAGIC) |
1919 | #define sv_catsv_nomg(dsv, ssv) sv_catsv_flags(dsv, ssv, 0) | |
b347df82 | 1920 | #define sv_catsv_mg(dsv, ssv) sv_catsv_flags(dsv, ssv, SV_GMAGIC|SV_SMAGIC) |
baca2b92 | 1921 | #define sv_catpvn(dsv, sstr, slen) sv_catpvn_flags(dsv, sstr, slen, SV_GMAGIC) |
4bac9ae4 CS |
1922 | #define sv_catpvn_mg(sv, sstr, slen) sv_catpvn_flags(sv, sstr, slen, SV_GMAGIC|SV_SMAGIC); |
1923 | #define sv_copypv(dsv, ssv) sv_copypv_flags(dsv, ssv, SV_GMAGIC) | |
1924 | #define sv_copypv_nomg(dsv, ssv) sv_copypv_flags(dsv, ssv, 0) | |
baca2b92 | 1925 | #define sv_2pv(sv, lp) sv_2pv_flags(sv, lp, SV_GMAGIC) |
cb2f1b7b NC |
1926 | #define sv_2pv_nolen(sv) sv_2pv(sv, 0) |
1927 | #define sv_2pvbyte_nolen(sv) sv_2pvbyte(sv, 0) | |
1928 | #define sv_2pvutf8_nolen(sv) sv_2pvutf8(sv, 0) | |
baca2b92 DM |
1929 | #define sv_2pv_nomg(sv, lp) sv_2pv_flags(sv, lp, 0) |
1930 | #define sv_pvn_force(sv, lp) sv_pvn_force_flags(sv, lp, SV_GMAGIC) | |
1931 | #define sv_utf8_upgrade(sv) sv_utf8_upgrade_flags(sv, SV_GMAGIC) | |
891f9566 YST |
1932 | #define sv_2iv(sv) sv_2iv_flags(sv, SV_GMAGIC) |
1933 | #define sv_2uv(sv) sv_2uv_flags(sv, SV_GMAGIC) | |
39d5de13 | 1934 | #define sv_2nv(sv) sv_2nv_flags(sv, SV_GMAGIC) |
078504b2 | 1935 | #define sv_eq(sv1, sv2) sv_eq_flags(sv1, sv2, SV_GMAGIC) |
e8c9c9d4 NC |
1936 | #define sv_cmp(sv1, sv2) sv_cmp_flags(sv1, sv2, SV_GMAGIC) |
1937 | #define sv_cmp_locale(sv1, sv2) sv_cmp_locale_flags(sv1, sv2, SV_GMAGIC) | |
078504b2 | 1938 | #define sv_collxfrm(sv, nxp) sv_cmp_flags(sv, nxp, SV_GMAGIC) |
06c841cf | 1939 | #define sv_2bool(sv) sv_2bool_flags(sv, SV_GMAGIC) |
4bac9ae4 | 1940 | #define sv_2bool_nomg(sv) sv_2bool_flags(sv, 0) |
84335ee9 NC |
1941 | #define sv_insert(bigstr, offset, len, little, littlelen) \ |
1942 | Perl_sv_insert_flags(aTHX_ (bigstr),(offset), (len), (little), \ | |
1943 | (littlelen), SV_GMAGIC) | |
108cb980 FC |
1944 | #define sv_mortalcopy(sv) \ |
1945 | Perl_sv_mortalcopy_flags(aTHX_ sv, SV_GMAGIC|SV_DO_COW_SVSETSV) | |
baca2b92 | 1946 | |
db79b45b | 1947 | /* Should be named SvCatPVN_utf8_upgrade? */ |
4bac9ae4 | 1948 | #define sv_catpvn_nomg_utf8_upgrade(dsv, sstr, slen, nsv) \ |
db79b45b JH |
1949 | STMT_START { \ |
1950 | if (!(nsv)) \ | |
ad25789c | 1951 | nsv = newSVpvn_flags(sstr, slen, SVs_TEMP); \ |
db79b45b JH |
1952 | else \ |
1953 | sv_setpvn(nsv, sstr, slen); \ | |
1954 | SvUTF8_off(nsv); \ | |
1955 | sv_utf8_upgrade(nsv); \ | |
4bac9ae4 | 1956 | sv_catsv_nomg(dsv, nsv); \ |
db79b45b | 1957 | } STMT_END |
64534138 FC |
1958 | #define sv_catpvn_nomg_maybeutf8(dsv, sstr, slen, is_utf8) \ |
1959 | sv_catpvn_flags(dsv, sstr, slen, (is_utf8)?SV_CATUTF8:SV_CATBYTES) | |
79072805 | 1960 | |
aec43834 FC |
1961 | #ifdef PERL_CORE |
1962 | # define sv_or_pv_len_utf8(sv, pv, bytelen) \ | |
1963 | (SvGAMAGIC(sv) \ | |
1964 | ? utf8_length((U8 *)(pv), (U8 *)(pv)+(bytelen)) \ | |
1965 | : sv_len_utf8(sv)) | |
6964422a | 1966 | # define sv_or_pv_pos_u2b(sv,s,p,lp) S_sv_or_pv_pos_u2b(aTHX_ sv,s,p,lp) |
aec43834 FC |
1967 | #endif |
1968 | ||
954c1994 GS |
1969 | /* |
1970 | =for apidoc Am|SV*|newRV_inc|SV* sv | |
1971 | ||
1972 | Creates an RV wrapper for an SV. The reference count for the original SV is | |
1973 | incremented. | |
1974 | ||
1975 | =cut | |
1976 | */ | |
1977 | ||
5f05dabc | 1978 | #define newRV_inc(sv) newRV(sv) |
5f05dabc | 1979 | |
ef50df4b | 1980 | /* the following macros update any magic values this sv is associated with */ |
79072805 | 1981 | |
954c1994 | 1982 | /* |
ccfc67b7 JH |
1983 | =head1 Magical Functions |
1984 | ||
954c1994 | 1985 | =for apidoc Am|void|SvGETMAGIC|SV* sv |
f7e029ab FC |
1986 | Invokes C<mg_get> on an SV if it has 'get' magic. For example, this |
1987 | will call C<FETCH> on a tied variable. This macro evaluates its | |
954c1994 GS |
1988 | argument more than once. |
1989 | ||
1990 | =for apidoc Am|void|SvSETMAGIC|SV* sv | |
f7e029ab FC |
1991 | Invokes C<mg_set> on an SV if it has 'set' magic. This is necessary |
1992 | after modifying a scalar, in case it is a magical variable like C<$|> | |
1993 | or a tied variable (it calls C<STORE>). This macro evaluates its | |
954c1994 GS |
1994 | argument more than once. |
1995 | ||
1996 | =for apidoc Am|void|SvSetSV|SV* dsb|SV* ssv | |
1997 | Calls C<sv_setsv> if dsv is not the same as ssv. May evaluate arguments | |
1998 | more than once. | |
1999 | ||
2000 | =for apidoc Am|void|SvSetSV_nosteal|SV* dsv|SV* ssv | |
2001 | Calls a non-destructive version of C<sv_setsv> if dsv is not the same as | |
8554e7a0 | 2002 | ssv. May evaluate arguments more than once. |
954c1994 | 2003 | |
645c22ef DM |
2004 | =for apidoc Am|void|SvSetMagicSV|SV* dsb|SV* ssv |
2005 | Like C<SvSetSV>, but does any set magic required afterwards. | |
2006 | ||
2007 | =for apidoc Am|void|SvSetMagicSV_nosteal|SV* dsv|SV* ssv | |
80663158 | 2008 | Like C<SvSetSV_nosteal>, but does any set magic required afterwards. |
645c22ef | 2009 | |
68795e93 NIS |
2010 | =for apidoc Am|void|SvSHARE|SV* sv |
2011 | Arranges for sv to be shared between threads if a suitable module | |
2012 | has been loaded. | |
2013 | ||
2014 | =for apidoc Am|void|SvLOCK|SV* sv | |
2015 | Arranges for a mutual exclusion lock to be obtained on sv if a suitable module | |
2016 | has been loaded. | |
2017 | ||
2018 | =for apidoc Am|void|SvUNLOCK|SV* sv | |
2019 | Releases a mutual exclusion lock on sv if a suitable module | |
2020 | has been loaded. | |
2021 | ||
ccfc67b7 JH |
2022 | =head1 SV Manipulation Functions |
2023 | ||
679ac26e | 2024 | =for apidoc Am|char *|SvGROW|SV* sv|STRLEN len |
954c1994 GS |
2025 | Expands the character buffer in the SV so that it has room for the |
2026 | indicated number of bytes (remember to reserve space for an extra trailing | |
8cf8f3d1 | 2027 | NUL character). Calls C<sv_grow> to perform the expansion if necessary. |
4b1e7f06 DD |
2028 | Returns a pointer to the character buffer. SV must be of type >= SVt_PV. One |
2029 | alternative is to call C<sv_grow> if you are not sure of the type of SV. | |
954c1994 GS |
2030 | |
2031 | =cut | |
2032 | */ | |
2033 | ||
16c91539 BM |
2034 | #define SvSHARE(sv) PL_sharehook(aTHX_ sv) |
2035 | #define SvLOCK(sv) PL_lockhook(aTHX_ sv) | |
2036 | #define SvUNLOCK(sv) PL_unlockhook(aTHX_ sv) | |
2037 | #define SvDESTROYABLE(sv) PL_destroyhook(aTHX_ sv) | |
68795e93 | 2038 | |
557fbd17 | 2039 | #define SvGETMAGIC(x) ((void)(SvGMAGICAL(x) && mg_get(x))) |
189b2af5 | 2040 | #define SvSETMAGIC(x) STMT_START { if (SvSMAGICAL(x)) mg_set(x); } STMT_END |
79072805 | 2041 | |
54310121 | 2042 | #define SvSetSV_and(dst,src,finally) \ |
189b2af5 | 2043 | STMT_START { \ |
54310121 | 2044 | if ((dst) != (src)) { \ |
2045 | sv_setsv(dst, src); \ | |
2046 | finally; \ | |
189b2af5 GS |
2047 | } \ |
2048 | } STMT_END | |
54310121 | 2049 | #define SvSetSV_nosteal_and(dst,src,finally) \ |
189b2af5 | 2050 | STMT_START { \ |
8ebc5c01 | 2051 | if ((dst) != (src)) { \ |
34482cd6 | 2052 | sv_setsv_flags(dst, src, SV_GMAGIC | SV_NOSTEAL | SV_DO_COW_SVSETSV); \ |
54310121 | 2053 | finally; \ |
189b2af5 GS |
2054 | } \ |
2055 | } STMT_END | |
79072805 | 2056 | |
54310121 | 2057 | #define SvSetSV(dst,src) \ |
c9d716f7 | 2058 | SvSetSV_and(dst,src,/*nothing*/;) |
54310121 | 2059 | #define SvSetSV_nosteal(dst,src) \ |
c9d716f7 | 2060 | SvSetSV_nosteal_and(dst,src,/*nothing*/;) |
54310121 | 2061 | |
2062 | #define SvSetMagicSV(dst,src) \ | |
4e3a8365 | 2063 | SvSetSV_and(dst,src,SvSETMAGIC(dst)) |
54310121 | 2064 | #define SvSetMagicSV_nosteal(dst,src) \ |
4e3a8365 | 2065 | SvSetSV_nosteal_and(dst,src,SvSETMAGIC(dst)) |
54310121 | 2066 | |
db79b45b | 2067 | |
1045810a | 2068 | #if !defined(SKIP_DEBUGGING) |
79072805 | 2069 | #define SvPEEK(sv) sv_peek(sv) |
3967c732 JD |
2070 | #else |
2071 | #define SvPEEK(sv) "" | |
2072 | #endif | |
79072805 | 2073 | |
3041a168 | 2074 | #define SvIMMORTAL(sv) (SvREADONLY(sv) && ((sv)==&PL_sv_undef || (sv)==&PL_sv_yes || (sv)==&PL_sv_no || (sv)==&PL_sv_placeholder)) |
36477c24 | 2075 | |
fe54beba DM |
2076 | #ifdef DEBUGGING |
2077 | /* exercise the immortal resurrection code in sv_free2() */ | |
2078 | # define SvREFCNT_IMMORTAL 1000 | |
2079 | #else | |
2080 | # define SvREFCNT_IMMORTAL ((~(U32)0)/2) | |
2081 | #endif | |
2082 | ||
567f3b56 TC |
2083 | /* |
2084 | =for apidoc Am|SV *|boolSV|bool b | |
2085 | ||
2086 | Returns a true SV if C<b> is a true value, or a false SV if C<b> is 0. | |
2087 | ||
2088 | See also C<PL_sv_yes> and C<PL_sv_no>. | |
2089 | ||
2090 | =cut | |
2091 | */ | |
2092 | ||
3280af22 | 2093 | #define boolSV(b) ((b) ? &PL_sv_yes : &PL_sv_no) |
54310121 | 2094 | |
79072805 | 2095 | #define isGV(sv) (SvTYPE(sv) == SVt_PVGV) |
f7877b28 NC |
2096 | /* If I give every macro argument a different name, then there won't be bugs |
2097 | where nested macros get confused. Been there, done that. */ | |
2098 | #define isGV_with_GP(pwadak) \ | |
2e5b91de | 2099 | (((SvFLAGS(pwadak) & (SVp_POK|SVpgv_GP)) == SVpgv_GP) \ |
f7877b28 | 2100 | && (SvTYPE(pwadak) == SVt_PVGV || SvTYPE(pwadak) == SVt_PVLV)) |
2e5b91de | 2101 | #define isGV_with_GP_on(sv) STMT_START { \ |
70ad9799 SP |
2102 | assert (SvTYPE(sv) == SVt_PVGV || SvTYPE(sv) == SVt_PVLV); \ |
2103 | assert (!SvPOKp(sv)); \ | |
2104 | assert (!SvIOKp(sv)); \ | |
2105 | (SvFLAGS(sv) |= SVpgv_GP); \ | |
2e5b91de NC |
2106 | } STMT_END |
2107 | #define isGV_with_GP_off(sv) STMT_START { \ | |
70ad9799 SP |
2108 | assert (SvTYPE(sv) == SVt_PVGV || SvTYPE(sv) == SVt_PVLV); \ |
2109 | assert (!SvPOKp(sv)); \ | |
2110 | assert (!SvIOKp(sv)); \ | |
2e5b91de NC |
2111 | (SvFLAGS(sv) &= ~SVpgv_GP); \ |
2112 | } STMT_END | |
8d919b0a FC |
2113 | #define isREGEXP(sv) \ |
2114 | (SvTYPE(sv) == SVt_REGEXP \ | |
2115 | || (SvFLAGS(sv) & (SVTYPEMASK|SVp_POK|SVpgv_GP|SVf_FAKE)) \ | |
2116 | == (SVt_PVLV|SVf_FAKE)) | |
2e5b91de | 2117 | |
79072805 | 2118 | |
db2c6cb3 FC |
2119 | #ifdef PERL_NEW_COPY_ON_WRITE |
2120 | # define SvGROW(sv,len) \ | |
2121 | (SvIsCOW(sv) || SvLEN(sv) < (len) ? sv_grow(sv,len) : SvPVX(sv)) | |
2122 | #else | |
2123 | # define SvGROW(sv,len) (SvLEN(sv) < (len) ? sv_grow(sv,len) : SvPVX(sv)) | |
2124 | #endif | |
5902b6a9 NC |
2125 | #define SvGROW_mutable(sv,len) \ |
2126 | (SvLEN(sv) < (len) ? sv_grow(sv,len) : SvPVX_mutable(sv)) | |
933fea7f | 2127 | #define Sv_Grow sv_grow |
3d35f11b | 2128 | |
a0739874 DM |
2129 | #define CLONEf_COPY_STACKS 1 |
2130 | #define CLONEf_KEEP_PTR_TABLE 2 | |
c43294b8 | 2131 | #define CLONEf_CLONE_HOST 4 |
0405e91e | 2132 | #define CLONEf_JOIN_IN 8 |
a0739874 | 2133 | |
8cf8f3d1 | 2134 | struct clone_params { |
d2d73c3e AB |
2135 | AV* stashes; |
2136 | UV flags; | |
59b40662 | 2137 | PerlInterpreter *proto_perl; |
1db366cc | 2138 | PerlInterpreter *new_perl; |
d08d57ef | 2139 | AV *unreferenced; |
8cf8f3d1 | 2140 | }; |
102d3b8a NC |
2141 | |
2142 | /* | |
740cce10 NC |
2143 | =for apidoc Am|SV*|newSVpvn_utf8|NULLOK const char* s|STRLEN len|U32 utf8 |
2144 | ||
2145 | Creates a new SV and copies a string into it. If utf8 is true, calls | |
2146 | C<SvUTF8_on> on the new SV. Implemented as a wrapper around C<newSVpvn_flags>. | |
2147 | ||
2148 | =cut | |
2149 | */ | |
2150 | ||
2151 | #define newSVpvn_utf8(s, len, u) newSVpvn_flags((s), (len), (u) ? SVf_UTF8 : 0) | |
2152 | ||
2153 | /* | |
35e035cc FC |
2154 | =for apidoc Amx|SV*|newSVpadname|PADNAME *pn |
2155 | ||
2156 | Creates a new SV containing the pad name. This is currently identical | |
2157 | to C<newSVsv>, but pad names may cease being SVs at some point, so | |
2158 | C<newSVpadname> is preferable. | |
2159 | ||
2160 | =cut | |
2161 | */ | |
2162 | ||
2163 | #define newSVpadname(pn) newSVsv(pn) | |
2164 | ||
2165 | /* | |
69240efd NC |
2166 | =for apidoc Am|void|SvOOK_offset|NN SV*sv|STRLEN len |
2167 | ||
2168 | Reads into I<len> the offset from SvPVX back to the true start of the | |
2169 | allocated buffer, which will be non-zero if C<sv_chop> has been used to | |
8554e7a0 | 2170 | efficiently remove characters from start of the buffer. Implemented as a |
69240efd | 2171 | macro, which takes the address of I<len>, which must be of type C<STRLEN>. |
8554e7a0 | 2172 | Evaluates I<sv> more than once. Sets I<len> to 0 if C<SvOOK(sv)> is false. |
69240efd NC |
2173 | |
2174 | =cut | |
2175 | */ | |
2176 | ||
2177 | #ifdef DEBUGGING | |
2178 | /* Does the bot know something I don't? | |
2179 | 10:28 <@Nicholas> metabatman | |
2180 | 10:28 <+meta> Nicholas: crash | |
2181 | */ | |
2182 | # define SvOOK_offset(sv, offset) STMT_START { \ | |
2183 | assert(sizeof(offset) == sizeof(STRLEN)); \ | |
2184 | if (SvOOK(sv)) { \ | |
d845901f CS |
2185 | const U8 *_crash = (U8*)SvPVX_const(sv); \ |
2186 | (offset) = *--_crash; \ | |
2187 | if (!(offset)) { \ | |
2188 | _crash -= sizeof(STRLEN); \ | |
2189 | Copy(_crash, (U8 *)&(offset), sizeof(STRLEN), U8); \ | |
69240efd NC |
2190 | } \ |
2191 | { \ | |
2192 | /* Validate the preceding buffer's sentinels to \ | |
2193 | verify that no-one is using it. */ \ | |
d845901f CS |
2194 | const U8 *const _bonk = (U8*)SvPVX_const(sv) - (offset);\ |
2195 | while (_crash > _bonk) { \ | |
2196 | --_crash; \ | |
2197 | assert (*_crash == (U8)PTR2UV(_crash)); \ | |
69240efd NC |
2198 | } \ |
2199 | } \ | |
2200 | } else { \ | |
d845901f | 2201 | (offset) = 0; \ |
69240efd NC |
2202 | } \ |
2203 | } STMT_END | |
2204 | #else | |
2205 | /* This is the same code, but avoids using any temporary variables: */ | |
2206 | # define SvOOK_offset(sv, offset) STMT_START { \ | |
2207 | assert(sizeof(offset) == sizeof(STRLEN)); \ | |
2208 | if (SvOOK(sv)) { \ | |
d845901f CS |
2209 | (offset) = ((U8*)SvPVX_const(sv))[-1]; \ |
2210 | if (!(offset)) { \ | |
69240efd | 2211 | Copy(SvPVX_const(sv) - 1 - sizeof(STRLEN), \ |
d845901f | 2212 | (U8*)&(offset), sizeof(STRLEN), U8); \ |
69240efd NC |
2213 | } \ |
2214 | } else { \ | |
d845901f | 2215 | (offset) = 0; \ |
69240efd NC |
2216 | } \ |
2217 | } STMT_END | |
2218 | #endif | |
85dca89a NC |
2219 | |
2220 | #define newIO() MUTABLE_IO(newSV_type(SVt_PVIO)) | |
2221 | ||
69240efd | 2222 | /* |
102d3b8a NC |
2223 | * Local variables: |
2224 | * c-indentation-style: bsd | |
2225 | * c-basic-offset: 4 | |
14d04a33 | 2226 | * indent-tabs-mode: nil |
102d3b8a NC |
2227 | * End: |
2228 | * | |
14d04a33 | 2229 | * ex: set ts=8 sts=4 sw=4 et: |
102d3b8a | 2230 | */ |