Commit | Line | Data |
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a0d0e21e | 1 | /* sv.c |
79072805 | 2 | * |
4bb101f2 JH |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
4 | * 2000, 2001, 2002, 2003, 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 | * | |
a0d0e21e | 9 | * "I wonder what the Entish is for 'yes' and 'no'," he thought. |
645c22ef DM |
10 | * |
11 | * | |
5e045b90 AMS |
12 | * This file contains the code that creates, manipulates and destroys |
13 | * scalar values (SVs). The other types (AV, HV, GV, etc.) reuse the | |
14 | * structure of an SV, so their creation and destruction is handled | |
15 | * here; higher-level functions are in av.c, hv.c, and so on. Opcode | |
16 | * level functions (eg. substr, split, join) for each of the types are | |
17 | * in the pp*.c files. | |
79072805 LW |
18 | */ |
19 | ||
20 | #include "EXTERN.h" | |
864dbfa3 | 21 | #define PERL_IN_SV_C |
79072805 | 22 | #include "perl.h" |
d2f185dc | 23 | #include "regcomp.h" |
79072805 | 24 | |
51371543 | 25 | #define FCALL *f |
2c5424a7 | 26 | |
765f542d NC |
27 | #ifdef PERL_COPY_ON_WRITE |
28 | #define SV_COW_NEXT_SV(sv) INT2PTR(SV *,SvUVX(sv)) | |
a29f6d03 | 29 | #define SV_COW_NEXT_SV_SET(current,next) SvUVX(current) = PTR2UV(next) |
b5ccf5f2 | 30 | /* This is a pessimistic view. Scalar must be purely a read-write PV to copy- |
765f542d | 31 | on-write. */ |
765f542d | 32 | #endif |
645c22ef DM |
33 | |
34 | /* ============================================================================ | |
35 | ||
36 | =head1 Allocation and deallocation of SVs. | |
37 | ||
5e045b90 AMS |
38 | An SV (or AV, HV, etc.) is allocated in two parts: the head (struct sv, |
39 | av, hv...) contains type and reference count information, as well as a | |
40 | pointer to the body (struct xrv, xpv, xpviv...), which contains fields | |
41 | specific to each type. | |
42 | ||
43 | Normally, this allocation is done using arenas, which are approximately | |
44 | 1K chunks of memory parcelled up into N heads or bodies. The first slot | |
45 | in each arena is reserved, and is used to hold a link to the next arena. | |
46 | In the case of heads, the unused first slot also contains some flags and | |
47 | a note of the number of slots. Snaked through each arena chain is a | |
48 | linked list of free items; when this becomes empty, an extra arena is | |
49 | allocated and divided up into N items which are threaded into the free | |
50 | list. | |
645c22ef DM |
51 | |
52 | The following global variables are associated with arenas: | |
53 | ||
54 | PL_sv_arenaroot pointer to list of SV arenas | |
55 | PL_sv_root pointer to list of free SV structures | |
56 | ||
57 | PL_foo_arenaroot pointer to list of foo arenas, | |
58 | PL_foo_root pointer to list of free foo bodies | |
59 | ... for foo in xiv, xnv, xrv, xpv etc. | |
60 | ||
61 | Note that some of the larger and more rarely used body types (eg xpvio) | |
62 | are not allocated using arenas, but are instead just malloc()/free()ed as | |
63 | required. Also, if PURIFY is defined, arenas are abandoned altogether, | |
64 | with all items individually malloc()ed. In addition, a few SV heads are | |
65 | not allocated from an arena, but are instead directly created as static | |
66 | or auto variables, eg PL_sv_undef. | |
67 | ||
68 | The SV arena serves the secondary purpose of allowing still-live SVs | |
69 | to be located and destroyed during final cleanup. | |
70 | ||
71 | At the lowest level, the macros new_SV() and del_SV() grab and free | |
72 | an SV head. (If debugging with -DD, del_SV() calls the function S_del_sv() | |
73 | to return the SV to the free list with error checking.) new_SV() calls | |
74 | more_sv() / sv_add_arena() to add an extra arena if the free list is empty. | |
75 | SVs in the free list have their SvTYPE field set to all ones. | |
76 | ||
77 | Similarly, there are macros new_XIV()/del_XIV(), new_XNV()/del_XNV() etc | |
78 | that allocate and return individual body types. Normally these are mapped | |
ff276b08 RG |
79 | to the arena-manipulating functions new_xiv()/del_xiv() etc, but may be |
80 | instead mapped directly to malloc()/free() if PURIFY is defined. The | |
645c22ef DM |
81 | new/del functions remove from, or add to, the appropriate PL_foo_root |
82 | list, and call more_xiv() etc to add a new arena if the list is empty. | |
83 | ||
ff276b08 | 84 | At the time of very final cleanup, sv_free_arenas() is called from |
645c22ef DM |
85 | perl_destruct() to physically free all the arenas allocated since the |
86 | start of the interpreter. Note that this also clears PL_he_arenaroot, | |
87 | which is otherwise dealt with in hv.c. | |
88 | ||
89 | Manipulation of any of the PL_*root pointers is protected by enclosing | |
90 | LOCK_SV_MUTEX; ... UNLOCK_SV_MUTEX calls which should Do the Right Thing | |
91 | if threads are enabled. | |
92 | ||
93 | The function visit() scans the SV arenas list, and calls a specified | |
94 | function for each SV it finds which is still live - ie which has an SvTYPE | |
95 | other than all 1's, and a non-zero SvREFCNT. visit() is used by the | |
96 | following functions (specified as [function that calls visit()] / [function | |
97 | called by visit() for each SV]): | |
98 | ||
99 | sv_report_used() / do_report_used() | |
100 | dump all remaining SVs (debugging aid) | |
101 | ||
102 | sv_clean_objs() / do_clean_objs(),do_clean_named_objs() | |
103 | Attempt to free all objects pointed to by RVs, | |
104 | and, unless DISABLE_DESTRUCTOR_KLUDGE is defined, | |
105 | try to do the same for all objects indirectly | |
106 | referenced by typeglobs too. Called once from | |
107 | perl_destruct(), prior to calling sv_clean_all() | |
108 | below. | |
109 | ||
110 | sv_clean_all() / do_clean_all() | |
111 | SvREFCNT_dec(sv) each remaining SV, possibly | |
112 | triggering an sv_free(). It also sets the | |
113 | SVf_BREAK flag on the SV to indicate that the | |
114 | refcnt has been artificially lowered, and thus | |
115 | stopping sv_free() from giving spurious warnings | |
116 | about SVs which unexpectedly have a refcnt | |
117 | of zero. called repeatedly from perl_destruct() | |
118 | until there are no SVs left. | |
119 | ||
120 | =head2 Summary | |
121 | ||
122 | Private API to rest of sv.c | |
123 | ||
124 | new_SV(), del_SV(), | |
125 | ||
126 | new_XIV(), del_XIV(), | |
127 | new_XNV(), del_XNV(), | |
128 | etc | |
129 | ||
130 | Public API: | |
131 | ||
8cf8f3d1 | 132 | sv_report_used(), sv_clean_objs(), sv_clean_all(), sv_free_arenas() |
645c22ef DM |
133 | |
134 | ||
135 | =cut | |
136 | ||
137 | ============================================================================ */ | |
138 | ||
139 | ||
51371543 | 140 | |
4561caa4 CS |
141 | /* |
142 | * "A time to plant, and a time to uproot what was planted..." | |
143 | */ | |
144 | ||
053fc874 GS |
145 | #define plant_SV(p) \ |
146 | STMT_START { \ | |
147 | SvANY(p) = (void *)PL_sv_root; \ | |
148 | SvFLAGS(p) = SVTYPEMASK; \ | |
149 | PL_sv_root = (p); \ | |
150 | --PL_sv_count; \ | |
151 | } STMT_END | |
a0d0e21e | 152 | |
fba3b22e | 153 | /* sv_mutex must be held while calling uproot_SV() */ |
053fc874 GS |
154 | #define uproot_SV(p) \ |
155 | STMT_START { \ | |
156 | (p) = PL_sv_root; \ | |
157 | PL_sv_root = (SV*)SvANY(p); \ | |
158 | ++PL_sv_count; \ | |
159 | } STMT_END | |
160 | ||
645c22ef DM |
161 | |
162 | /* new_SV(): return a new, empty SV head */ | |
163 | ||
eba0f806 DM |
164 | #ifdef DEBUG_LEAKING_SCALARS |
165 | /* provide a real function for a debugger to play with */ | |
166 | STATIC SV* | |
167 | S_new_SV(pTHX) | |
168 | { | |
169 | SV* sv; | |
170 | ||
171 | LOCK_SV_MUTEX; | |
172 | if (PL_sv_root) | |
173 | uproot_SV(sv); | |
174 | else | |
175 | sv = more_sv(); | |
176 | UNLOCK_SV_MUTEX; | |
177 | SvANY(sv) = 0; | |
178 | SvREFCNT(sv) = 1; | |
179 | SvFLAGS(sv) = 0; | |
180 | return sv; | |
181 | } | |
182 | # define new_SV(p) (p)=S_new_SV(aTHX) | |
183 | ||
184 | #else | |
185 | # define new_SV(p) \ | |
053fc874 GS |
186 | STMT_START { \ |
187 | LOCK_SV_MUTEX; \ | |
188 | if (PL_sv_root) \ | |
189 | uproot_SV(p); \ | |
190 | else \ | |
191 | (p) = more_sv(); \ | |
192 | UNLOCK_SV_MUTEX; \ | |
193 | SvANY(p) = 0; \ | |
194 | SvREFCNT(p) = 1; \ | |
195 | SvFLAGS(p) = 0; \ | |
196 | } STMT_END | |
eba0f806 | 197 | #endif |
463ee0b2 | 198 | |
645c22ef DM |
199 | |
200 | /* del_SV(): return an empty SV head to the free list */ | |
201 | ||
a0d0e21e | 202 | #ifdef DEBUGGING |
4561caa4 | 203 | |
053fc874 GS |
204 | #define del_SV(p) \ |
205 | STMT_START { \ | |
206 | LOCK_SV_MUTEX; \ | |
aea4f609 | 207 | if (DEBUG_D_TEST) \ |
053fc874 GS |
208 | del_sv(p); \ |
209 | else \ | |
210 | plant_SV(p); \ | |
211 | UNLOCK_SV_MUTEX; \ | |
212 | } STMT_END | |
a0d0e21e | 213 | |
76e3520e | 214 | STATIC void |
cea2e8a9 | 215 | S_del_sv(pTHX_ SV *p) |
463ee0b2 | 216 | { |
aea4f609 | 217 | if (DEBUG_D_TEST) { |
4633a7c4 | 218 | SV* sva; |
a0d0e21e LW |
219 | SV* sv; |
220 | SV* svend; | |
221 | int ok = 0; | |
3280af22 | 222 | for (sva = PL_sv_arenaroot; sva; sva = (SV *) SvANY(sva)) { |
4633a7c4 LW |
223 | sv = sva + 1; |
224 | svend = &sva[SvREFCNT(sva)]; | |
a0d0e21e LW |
225 | if (p >= sv && p < svend) |
226 | ok = 1; | |
227 | } | |
228 | if (!ok) { | |
0453d815 | 229 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 230 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
1d7c1841 GS |
231 | "Attempt to free non-arena SV: 0x%"UVxf, |
232 | PTR2UV(p)); | |
a0d0e21e LW |
233 | return; |
234 | } | |
235 | } | |
4561caa4 | 236 | plant_SV(p); |
463ee0b2 | 237 | } |
a0d0e21e | 238 | |
4561caa4 CS |
239 | #else /* ! DEBUGGING */ |
240 | ||
241 | #define del_SV(p) plant_SV(p) | |
242 | ||
243 | #endif /* DEBUGGING */ | |
463ee0b2 | 244 | |
645c22ef DM |
245 | |
246 | /* | |
ccfc67b7 JH |
247 | =head1 SV Manipulation Functions |
248 | ||
645c22ef DM |
249 | =for apidoc sv_add_arena |
250 | ||
251 | Given a chunk of memory, link it to the head of the list of arenas, | |
252 | and split it into a list of free SVs. | |
253 | ||
254 | =cut | |
255 | */ | |
256 | ||
4633a7c4 | 257 | void |
864dbfa3 | 258 | Perl_sv_add_arena(pTHX_ char *ptr, U32 size, U32 flags) |
463ee0b2 | 259 | { |
4633a7c4 | 260 | SV* sva = (SV*)ptr; |
463ee0b2 LW |
261 | register SV* sv; |
262 | register SV* svend; | |
14dd3ad8 | 263 | Zero(ptr, size, char); |
4633a7c4 LW |
264 | |
265 | /* The first SV in an arena isn't an SV. */ | |
3280af22 | 266 | SvANY(sva) = (void *) PL_sv_arenaroot; /* ptr to next arena */ |
4633a7c4 LW |
267 | SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */ |
268 | SvFLAGS(sva) = flags; /* FAKE if not to be freed */ | |
269 | ||
3280af22 NIS |
270 | PL_sv_arenaroot = sva; |
271 | PL_sv_root = sva + 1; | |
4633a7c4 LW |
272 | |
273 | svend = &sva[SvREFCNT(sva) - 1]; | |
274 | sv = sva + 1; | |
463ee0b2 | 275 | while (sv < svend) { |
a0d0e21e | 276 | SvANY(sv) = (void *)(SV*)(sv + 1); |
8990e307 | 277 | SvFLAGS(sv) = SVTYPEMASK; |
463ee0b2 LW |
278 | sv++; |
279 | } | |
280 | SvANY(sv) = 0; | |
4633a7c4 LW |
281 | SvFLAGS(sv) = SVTYPEMASK; |
282 | } | |
283 | ||
645c22ef DM |
284 | /* make some more SVs by adding another arena */ |
285 | ||
fba3b22e | 286 | /* sv_mutex must be held while calling more_sv() */ |
76e3520e | 287 | STATIC SV* |
cea2e8a9 | 288 | S_more_sv(pTHX) |
4633a7c4 | 289 | { |
4561caa4 CS |
290 | register SV* sv; |
291 | ||
3280af22 NIS |
292 | if (PL_nice_chunk) { |
293 | sv_add_arena(PL_nice_chunk, PL_nice_chunk_size, 0); | |
294 | PL_nice_chunk = Nullch; | |
30ad99e7 | 295 | PL_nice_chunk_size = 0; |
c07a80fd | 296 | } |
1edc1566 | 297 | else { |
298 | char *chunk; /* must use New here to match call to */ | |
299 | New(704,chunk,1008,char); /* Safefree() in sv_free_arenas() */ | |
300 | sv_add_arena(chunk, 1008, 0); | |
301 | } | |
4561caa4 CS |
302 | uproot_SV(sv); |
303 | return sv; | |
463ee0b2 LW |
304 | } |
305 | ||
ff276b08 | 306 | /* visit(): call the named function for each non-free SV in the arenas. */ |
645c22ef | 307 | |
5226ed68 | 308 | STATIC I32 |
cea2e8a9 | 309 | S_visit(pTHX_ SVFUNC_t f) |
8990e307 | 310 | { |
4633a7c4 | 311 | SV* sva; |
8990e307 LW |
312 | SV* sv; |
313 | register SV* svend; | |
5226ed68 | 314 | I32 visited = 0; |
8990e307 | 315 | |
3280af22 | 316 | for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) { |
4633a7c4 | 317 | svend = &sva[SvREFCNT(sva)]; |
4561caa4 | 318 | for (sv = sva + 1; sv < svend; ++sv) { |
f25c30a3 | 319 | if (SvTYPE(sv) != SVTYPEMASK && SvREFCNT(sv)) { |
acfe0abc | 320 | (FCALL)(aTHX_ sv); |
5226ed68 JH |
321 | ++visited; |
322 | } | |
8990e307 LW |
323 | } |
324 | } | |
5226ed68 | 325 | return visited; |
8990e307 LW |
326 | } |
327 | ||
758a08c3 JH |
328 | #ifdef DEBUGGING |
329 | ||
645c22ef DM |
330 | /* called by sv_report_used() for each live SV */ |
331 | ||
332 | static void | |
acfe0abc | 333 | do_report_used(pTHX_ SV *sv) |
645c22ef DM |
334 | { |
335 | if (SvTYPE(sv) != SVTYPEMASK) { | |
336 | PerlIO_printf(Perl_debug_log, "****\n"); | |
337 | sv_dump(sv); | |
338 | } | |
339 | } | |
758a08c3 | 340 | #endif |
645c22ef DM |
341 | |
342 | /* | |
343 | =for apidoc sv_report_used | |
344 | ||
345 | Dump the contents of all SVs not yet freed. (Debugging aid). | |
346 | ||
347 | =cut | |
348 | */ | |
349 | ||
8990e307 | 350 | void |
864dbfa3 | 351 | Perl_sv_report_used(pTHX) |
4561caa4 | 352 | { |
ff270d3a | 353 | #ifdef DEBUGGING |
0b94c7bb | 354 | visit(do_report_used); |
ff270d3a | 355 | #endif |
4561caa4 CS |
356 | } |
357 | ||
645c22ef DM |
358 | /* called by sv_clean_objs() for each live SV */ |
359 | ||
360 | static void | |
acfe0abc | 361 | do_clean_objs(pTHX_ SV *sv) |
645c22ef DM |
362 | { |
363 | SV* rv; | |
364 | ||
365 | if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) { | |
366 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv))); | |
367 | if (SvWEAKREF(sv)) { | |
368 | sv_del_backref(sv); | |
369 | SvWEAKREF_off(sv); | |
370 | SvRV(sv) = 0; | |
371 | } else { | |
372 | SvROK_off(sv); | |
373 | SvRV(sv) = 0; | |
374 | SvREFCNT_dec(rv); | |
375 | } | |
376 | } | |
377 | ||
378 | /* XXX Might want to check arrays, etc. */ | |
379 | } | |
380 | ||
381 | /* called by sv_clean_objs() for each live SV */ | |
382 | ||
383 | #ifndef DISABLE_DESTRUCTOR_KLUDGE | |
384 | static void | |
acfe0abc | 385 | do_clean_named_objs(pTHX_ SV *sv) |
645c22ef DM |
386 | { |
387 | if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) { | |
388 | if ( SvOBJECT(GvSV(sv)) || | |
389 | (GvAV(sv) && SvOBJECT(GvAV(sv))) || | |
390 | (GvHV(sv) && SvOBJECT(GvHV(sv))) || | |
391 | (GvIO(sv) && SvOBJECT(GvIO(sv))) || | |
392 | (GvCV(sv) && SvOBJECT(GvCV(sv))) ) | |
393 | { | |
394 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv))); | |
395 | SvREFCNT_dec(sv); | |
396 | } | |
397 | } | |
398 | } | |
399 | #endif | |
400 | ||
401 | /* | |
402 | =for apidoc sv_clean_objs | |
403 | ||
404 | Attempt to destroy all objects not yet freed | |
405 | ||
406 | =cut | |
407 | */ | |
408 | ||
4561caa4 | 409 | void |
864dbfa3 | 410 | Perl_sv_clean_objs(pTHX) |
4561caa4 | 411 | { |
3280af22 | 412 | PL_in_clean_objs = TRUE; |
0b94c7bb | 413 | visit(do_clean_objs); |
4561caa4 | 414 | #ifndef DISABLE_DESTRUCTOR_KLUDGE |
2d0f3c12 | 415 | /* some barnacles may yet remain, clinging to typeglobs */ |
0b94c7bb | 416 | visit(do_clean_named_objs); |
4561caa4 | 417 | #endif |
3280af22 | 418 | PL_in_clean_objs = FALSE; |
4561caa4 CS |
419 | } |
420 | ||
645c22ef DM |
421 | /* called by sv_clean_all() for each live SV */ |
422 | ||
423 | static void | |
acfe0abc | 424 | do_clean_all(pTHX_ SV *sv) |
645c22ef DM |
425 | { |
426 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) )); | |
427 | SvFLAGS(sv) |= SVf_BREAK; | |
428 | SvREFCNT_dec(sv); | |
429 | } | |
430 | ||
431 | /* | |
432 | =for apidoc sv_clean_all | |
433 | ||
434 | Decrement the refcnt of each remaining SV, possibly triggering a | |
435 | cleanup. This function may have to be called multiple times to free | |
ff276b08 | 436 | SVs which are in complex self-referential hierarchies. |
645c22ef DM |
437 | |
438 | =cut | |
439 | */ | |
440 | ||
5226ed68 | 441 | I32 |
864dbfa3 | 442 | Perl_sv_clean_all(pTHX) |
8990e307 | 443 | { |
5226ed68 | 444 | I32 cleaned; |
3280af22 | 445 | PL_in_clean_all = TRUE; |
5226ed68 | 446 | cleaned = visit(do_clean_all); |
3280af22 | 447 | PL_in_clean_all = FALSE; |
5226ed68 | 448 | return cleaned; |
8990e307 | 449 | } |
463ee0b2 | 450 | |
645c22ef DM |
451 | /* |
452 | =for apidoc sv_free_arenas | |
453 | ||
454 | Deallocate the memory used by all arenas. Note that all the individual SV | |
455 | heads and bodies within the arenas must already have been freed. | |
456 | ||
457 | =cut | |
458 | */ | |
459 | ||
4633a7c4 | 460 | void |
864dbfa3 | 461 | Perl_sv_free_arenas(pTHX) |
4633a7c4 LW |
462 | { |
463 | SV* sva; | |
464 | SV* svanext; | |
612f20c3 | 465 | XPV *arena, *arenanext; |
4633a7c4 LW |
466 | |
467 | /* Free arenas here, but be careful about fake ones. (We assume | |
468 | contiguity of the fake ones with the corresponding real ones.) */ | |
469 | ||
3280af22 | 470 | for (sva = PL_sv_arenaroot; sva; sva = svanext) { |
4633a7c4 LW |
471 | svanext = (SV*) SvANY(sva); |
472 | while (svanext && SvFAKE(svanext)) | |
473 | svanext = (SV*) SvANY(svanext); | |
474 | ||
475 | if (!SvFAKE(sva)) | |
1edc1566 | 476 | Safefree((void *)sva); |
4633a7c4 | 477 | } |
5f05dabc | 478 | |
612f20c3 GS |
479 | for (arena = PL_xiv_arenaroot; arena; arena = arenanext) { |
480 | arenanext = (XPV*)arena->xpv_pv; | |
481 | Safefree(arena); | |
482 | } | |
483 | PL_xiv_arenaroot = 0; | |
484 | ||
485 | for (arena = PL_xnv_arenaroot; arena; arena = arenanext) { | |
486 | arenanext = (XPV*)arena->xpv_pv; | |
487 | Safefree(arena); | |
488 | } | |
489 | PL_xnv_arenaroot = 0; | |
490 | ||
491 | for (arena = PL_xrv_arenaroot; arena; arena = arenanext) { | |
492 | arenanext = (XPV*)arena->xpv_pv; | |
493 | Safefree(arena); | |
494 | } | |
495 | PL_xrv_arenaroot = 0; | |
496 | ||
497 | for (arena = PL_xpv_arenaroot; arena; arena = arenanext) { | |
498 | arenanext = (XPV*)arena->xpv_pv; | |
499 | Safefree(arena); | |
500 | } | |
501 | PL_xpv_arenaroot = 0; | |
502 | ||
503 | for (arena = (XPV*)PL_xpviv_arenaroot; arena; arena = arenanext) { | |
504 | arenanext = (XPV*)arena->xpv_pv; | |
505 | Safefree(arena); | |
506 | } | |
507 | PL_xpviv_arenaroot = 0; | |
508 | ||
509 | for (arena = (XPV*)PL_xpvnv_arenaroot; arena; arena = arenanext) { | |
510 | arenanext = (XPV*)arena->xpv_pv; | |
511 | Safefree(arena); | |
512 | } | |
513 | PL_xpvnv_arenaroot = 0; | |
514 | ||
515 | for (arena = (XPV*)PL_xpvcv_arenaroot; arena; arena = arenanext) { | |
516 | arenanext = (XPV*)arena->xpv_pv; | |
517 | Safefree(arena); | |
518 | } | |
519 | PL_xpvcv_arenaroot = 0; | |
520 | ||
521 | for (arena = (XPV*)PL_xpvav_arenaroot; arena; arena = arenanext) { | |
522 | arenanext = (XPV*)arena->xpv_pv; | |
523 | Safefree(arena); | |
524 | } | |
525 | PL_xpvav_arenaroot = 0; | |
526 | ||
527 | for (arena = (XPV*)PL_xpvhv_arenaroot; arena; arena = arenanext) { | |
528 | arenanext = (XPV*)arena->xpv_pv; | |
529 | Safefree(arena); | |
530 | } | |
531 | PL_xpvhv_arenaroot = 0; | |
532 | ||
533 | for (arena = (XPV*)PL_xpvmg_arenaroot; arena; arena = arenanext) { | |
534 | arenanext = (XPV*)arena->xpv_pv; | |
535 | Safefree(arena); | |
536 | } | |
537 | PL_xpvmg_arenaroot = 0; | |
538 | ||
539 | for (arena = (XPV*)PL_xpvlv_arenaroot; arena; arena = arenanext) { | |
540 | arenanext = (XPV*)arena->xpv_pv; | |
541 | Safefree(arena); | |
542 | } | |
543 | PL_xpvlv_arenaroot = 0; | |
544 | ||
545 | for (arena = (XPV*)PL_xpvbm_arenaroot; arena; arena = arenanext) { | |
546 | arenanext = (XPV*)arena->xpv_pv; | |
547 | Safefree(arena); | |
548 | } | |
549 | PL_xpvbm_arenaroot = 0; | |
550 | ||
551 | for (arena = (XPV*)PL_he_arenaroot; arena; arena = arenanext) { | |
552 | arenanext = (XPV*)arena->xpv_pv; | |
553 | Safefree(arena); | |
554 | } | |
555 | PL_he_arenaroot = 0; | |
556 | ||
3280af22 NIS |
557 | if (PL_nice_chunk) |
558 | Safefree(PL_nice_chunk); | |
559 | PL_nice_chunk = Nullch; | |
560 | PL_nice_chunk_size = 0; | |
561 | PL_sv_arenaroot = 0; | |
562 | PL_sv_root = 0; | |
4633a7c4 LW |
563 | } |
564 | ||
645c22ef DM |
565 | /* |
566 | =for apidoc report_uninit | |
567 | ||
568 | Print appropriate "Use of uninitialized variable" warning | |
569 | ||
570 | =cut | |
571 | */ | |
572 | ||
1d7c1841 GS |
573 | void |
574 | Perl_report_uninit(pTHX) | |
575 | { | |
576 | if (PL_op) | |
9014280d | 577 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, |
53e06cf0 | 578 | " in ", OP_DESC(PL_op)); |
1d7c1841 | 579 | else |
9014280d | 580 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, "", ""); |
1d7c1841 GS |
581 | } |
582 | ||
645c22ef DM |
583 | /* grab a new IV body from the free list, allocating more if necessary */ |
584 | ||
76e3520e | 585 | STATIC XPVIV* |
cea2e8a9 | 586 | S_new_xiv(pTHX) |
463ee0b2 | 587 | { |
ea7c11a3 | 588 | IV* xiv; |
cbe51380 GS |
589 | LOCK_SV_MUTEX; |
590 | if (!PL_xiv_root) | |
591 | more_xiv(); | |
592 | xiv = PL_xiv_root; | |
593 | /* | |
594 | * See comment in more_xiv() -- RAM. | |
595 | */ | |
596 | PL_xiv_root = *(IV**)xiv; | |
597 | UNLOCK_SV_MUTEX; | |
598 | return (XPVIV*)((char*)xiv - STRUCT_OFFSET(XPVIV, xiv_iv)); | |
463ee0b2 LW |
599 | } |
600 | ||
645c22ef DM |
601 | /* return an IV body to the free list */ |
602 | ||
76e3520e | 603 | STATIC void |
cea2e8a9 | 604 | S_del_xiv(pTHX_ XPVIV *p) |
463ee0b2 | 605 | { |
23e6a22f | 606 | IV* xiv = (IV*)((char*)(p) + STRUCT_OFFSET(XPVIV, xiv_iv)); |
cbe51380 | 607 | LOCK_SV_MUTEX; |
3280af22 NIS |
608 | *(IV**)xiv = PL_xiv_root; |
609 | PL_xiv_root = xiv; | |
cbe51380 | 610 | UNLOCK_SV_MUTEX; |
463ee0b2 LW |
611 | } |
612 | ||
645c22ef DM |
613 | /* allocate another arena's worth of IV bodies */ |
614 | ||
cbe51380 | 615 | STATIC void |
cea2e8a9 | 616 | S_more_xiv(pTHX) |
463ee0b2 | 617 | { |
ea7c11a3 SM |
618 | register IV* xiv; |
619 | register IV* xivend; | |
8c52afec IZ |
620 | XPV* ptr; |
621 | New(705, ptr, 1008/sizeof(XPV), XPV); | |
645c22ef | 622 | ptr->xpv_pv = (char*)PL_xiv_arenaroot; /* linked list of xiv arenas */ |
3280af22 | 623 | PL_xiv_arenaroot = ptr; /* to keep Purify happy */ |
a0d0e21e | 624 | |
ea7c11a3 SM |
625 | xiv = (IV*) ptr; |
626 | xivend = &xiv[1008 / sizeof(IV) - 1]; | |
645c22ef | 627 | xiv += (sizeof(XPV) - 1) / sizeof(IV) + 1; /* fudge by size of XPV */ |
3280af22 | 628 | PL_xiv_root = xiv; |
463ee0b2 | 629 | while (xiv < xivend) { |
ea7c11a3 | 630 | *(IV**)xiv = (IV *)(xiv + 1); |
463ee0b2 LW |
631 | xiv++; |
632 | } | |
ea7c11a3 | 633 | *(IV**)xiv = 0; |
463ee0b2 LW |
634 | } |
635 | ||
645c22ef DM |
636 | /* grab a new NV body from the free list, allocating more if necessary */ |
637 | ||
76e3520e | 638 | STATIC XPVNV* |
cea2e8a9 | 639 | S_new_xnv(pTHX) |
463ee0b2 | 640 | { |
65202027 | 641 | NV* xnv; |
cbe51380 GS |
642 | LOCK_SV_MUTEX; |
643 | if (!PL_xnv_root) | |
644 | more_xnv(); | |
645 | xnv = PL_xnv_root; | |
65202027 | 646 | PL_xnv_root = *(NV**)xnv; |
cbe51380 GS |
647 | UNLOCK_SV_MUTEX; |
648 | return (XPVNV*)((char*)xnv - STRUCT_OFFSET(XPVNV, xnv_nv)); | |
463ee0b2 LW |
649 | } |
650 | ||
645c22ef DM |
651 | /* return an NV body to the free list */ |
652 | ||
76e3520e | 653 | STATIC void |
cea2e8a9 | 654 | S_del_xnv(pTHX_ XPVNV *p) |
463ee0b2 | 655 | { |
65202027 | 656 | NV* xnv = (NV*)((char*)(p) + STRUCT_OFFSET(XPVNV, xnv_nv)); |
cbe51380 | 657 | LOCK_SV_MUTEX; |
65202027 | 658 | *(NV**)xnv = PL_xnv_root; |
3280af22 | 659 | PL_xnv_root = xnv; |
cbe51380 | 660 | UNLOCK_SV_MUTEX; |
463ee0b2 LW |
661 | } |
662 | ||
645c22ef DM |
663 | /* allocate another arena's worth of NV bodies */ |
664 | ||
cbe51380 | 665 | STATIC void |
cea2e8a9 | 666 | S_more_xnv(pTHX) |
463ee0b2 | 667 | { |
65202027 DS |
668 | register NV* xnv; |
669 | register NV* xnvend; | |
612f20c3 GS |
670 | XPV *ptr; |
671 | New(711, ptr, 1008/sizeof(XPV), XPV); | |
672 | ptr->xpv_pv = (char*)PL_xnv_arenaroot; | |
673 | PL_xnv_arenaroot = ptr; | |
674 | ||
675 | xnv = (NV*) ptr; | |
65202027 DS |
676 | xnvend = &xnv[1008 / sizeof(NV) - 1]; |
677 | xnv += (sizeof(XPVIV) - 1) / sizeof(NV) + 1; /* fudge by sizeof XPVIV */ | |
3280af22 | 678 | PL_xnv_root = xnv; |
463ee0b2 | 679 | while (xnv < xnvend) { |
65202027 | 680 | *(NV**)xnv = (NV*)(xnv + 1); |
463ee0b2 LW |
681 | xnv++; |
682 | } | |
65202027 | 683 | *(NV**)xnv = 0; |
463ee0b2 LW |
684 | } |
685 | ||
645c22ef DM |
686 | /* grab a new struct xrv from the free list, allocating more if necessary */ |
687 | ||
76e3520e | 688 | STATIC XRV* |
cea2e8a9 | 689 | S_new_xrv(pTHX) |
ed6116ce LW |
690 | { |
691 | XRV* xrv; | |
cbe51380 GS |
692 | LOCK_SV_MUTEX; |
693 | if (!PL_xrv_root) | |
694 | more_xrv(); | |
695 | xrv = PL_xrv_root; | |
696 | PL_xrv_root = (XRV*)xrv->xrv_rv; | |
697 | UNLOCK_SV_MUTEX; | |
698 | return xrv; | |
ed6116ce LW |
699 | } |
700 | ||
645c22ef DM |
701 | /* return a struct xrv to the free list */ |
702 | ||
76e3520e | 703 | STATIC void |
cea2e8a9 | 704 | S_del_xrv(pTHX_ XRV *p) |
ed6116ce | 705 | { |
cbe51380 | 706 | LOCK_SV_MUTEX; |
3280af22 NIS |
707 | p->xrv_rv = (SV*)PL_xrv_root; |
708 | PL_xrv_root = p; | |
cbe51380 | 709 | UNLOCK_SV_MUTEX; |
ed6116ce LW |
710 | } |
711 | ||
645c22ef DM |
712 | /* allocate another arena's worth of struct xrv */ |
713 | ||
cbe51380 | 714 | STATIC void |
cea2e8a9 | 715 | S_more_xrv(pTHX) |
ed6116ce | 716 | { |
ed6116ce LW |
717 | register XRV* xrv; |
718 | register XRV* xrvend; | |
612f20c3 GS |
719 | XPV *ptr; |
720 | New(712, ptr, 1008/sizeof(XPV), XPV); | |
721 | ptr->xpv_pv = (char*)PL_xrv_arenaroot; | |
722 | PL_xrv_arenaroot = ptr; | |
723 | ||
724 | xrv = (XRV*) ptr; | |
ed6116ce | 725 | xrvend = &xrv[1008 / sizeof(XRV) - 1]; |
612f20c3 GS |
726 | xrv += (sizeof(XPV) - 1) / sizeof(XRV) + 1; |
727 | PL_xrv_root = xrv; | |
ed6116ce LW |
728 | while (xrv < xrvend) { |
729 | xrv->xrv_rv = (SV*)(xrv + 1); | |
730 | xrv++; | |
731 | } | |
732 | xrv->xrv_rv = 0; | |
ed6116ce LW |
733 | } |
734 | ||
645c22ef DM |
735 | /* grab a new struct xpv from the free list, allocating more if necessary */ |
736 | ||
76e3520e | 737 | STATIC XPV* |
cea2e8a9 | 738 | S_new_xpv(pTHX) |
463ee0b2 LW |
739 | { |
740 | XPV* xpv; | |
cbe51380 GS |
741 | LOCK_SV_MUTEX; |
742 | if (!PL_xpv_root) | |
743 | more_xpv(); | |
744 | xpv = PL_xpv_root; | |
745 | PL_xpv_root = (XPV*)xpv->xpv_pv; | |
746 | UNLOCK_SV_MUTEX; | |
747 | return xpv; | |
463ee0b2 LW |
748 | } |
749 | ||
645c22ef DM |
750 | /* return a struct xpv to the free list */ |
751 | ||
76e3520e | 752 | STATIC void |
cea2e8a9 | 753 | S_del_xpv(pTHX_ XPV *p) |
463ee0b2 | 754 | { |
cbe51380 | 755 | LOCK_SV_MUTEX; |
3280af22 NIS |
756 | p->xpv_pv = (char*)PL_xpv_root; |
757 | PL_xpv_root = p; | |
cbe51380 | 758 | UNLOCK_SV_MUTEX; |
463ee0b2 LW |
759 | } |
760 | ||
645c22ef DM |
761 | /* allocate another arena's worth of struct xpv */ |
762 | ||
cbe51380 | 763 | STATIC void |
cea2e8a9 | 764 | S_more_xpv(pTHX) |
463ee0b2 | 765 | { |
463ee0b2 LW |
766 | register XPV* xpv; |
767 | register XPV* xpvend; | |
612f20c3 GS |
768 | New(713, xpv, 1008/sizeof(XPV), XPV); |
769 | xpv->xpv_pv = (char*)PL_xpv_arenaroot; | |
770 | PL_xpv_arenaroot = xpv; | |
771 | ||
463ee0b2 | 772 | xpvend = &xpv[1008 / sizeof(XPV) - 1]; |
612f20c3 | 773 | PL_xpv_root = ++xpv; |
463ee0b2 LW |
774 | while (xpv < xpvend) { |
775 | xpv->xpv_pv = (char*)(xpv + 1); | |
776 | xpv++; | |
777 | } | |
778 | xpv->xpv_pv = 0; | |
463ee0b2 LW |
779 | } |
780 | ||
645c22ef DM |
781 | /* grab a new struct xpviv from the free list, allocating more if necessary */ |
782 | ||
932e9ff9 VB |
783 | STATIC XPVIV* |
784 | S_new_xpviv(pTHX) | |
785 | { | |
786 | XPVIV* xpviv; | |
787 | LOCK_SV_MUTEX; | |
788 | if (!PL_xpviv_root) | |
789 | more_xpviv(); | |
790 | xpviv = PL_xpviv_root; | |
791 | PL_xpviv_root = (XPVIV*)xpviv->xpv_pv; | |
792 | UNLOCK_SV_MUTEX; | |
793 | return xpviv; | |
794 | } | |
795 | ||
645c22ef DM |
796 | /* return a struct xpviv to the free list */ |
797 | ||
932e9ff9 VB |
798 | STATIC void |
799 | S_del_xpviv(pTHX_ XPVIV *p) | |
800 | { | |
801 | LOCK_SV_MUTEX; | |
802 | p->xpv_pv = (char*)PL_xpviv_root; | |
803 | PL_xpviv_root = p; | |
804 | UNLOCK_SV_MUTEX; | |
805 | } | |
806 | ||
645c22ef DM |
807 | /* allocate another arena's worth of struct xpviv */ |
808 | ||
932e9ff9 VB |
809 | STATIC void |
810 | S_more_xpviv(pTHX) | |
811 | { | |
812 | register XPVIV* xpviv; | |
813 | register XPVIV* xpvivend; | |
612f20c3 GS |
814 | New(714, xpviv, 1008/sizeof(XPVIV), XPVIV); |
815 | xpviv->xpv_pv = (char*)PL_xpviv_arenaroot; | |
816 | PL_xpviv_arenaroot = xpviv; | |
817 | ||
932e9ff9 | 818 | xpvivend = &xpviv[1008 / sizeof(XPVIV) - 1]; |
612f20c3 | 819 | PL_xpviv_root = ++xpviv; |
932e9ff9 VB |
820 | while (xpviv < xpvivend) { |
821 | xpviv->xpv_pv = (char*)(xpviv + 1); | |
822 | xpviv++; | |
823 | } | |
824 | xpviv->xpv_pv = 0; | |
825 | } | |
826 | ||
645c22ef DM |
827 | /* grab a new struct xpvnv from the free list, allocating more if necessary */ |
828 | ||
932e9ff9 VB |
829 | STATIC XPVNV* |
830 | S_new_xpvnv(pTHX) | |
831 | { | |
832 | XPVNV* xpvnv; | |
833 | LOCK_SV_MUTEX; | |
834 | if (!PL_xpvnv_root) | |
835 | more_xpvnv(); | |
836 | xpvnv = PL_xpvnv_root; | |
837 | PL_xpvnv_root = (XPVNV*)xpvnv->xpv_pv; | |
838 | UNLOCK_SV_MUTEX; | |
839 | return xpvnv; | |
840 | } | |
841 | ||
645c22ef DM |
842 | /* return a struct xpvnv to the free list */ |
843 | ||
932e9ff9 VB |
844 | STATIC void |
845 | S_del_xpvnv(pTHX_ XPVNV *p) | |
846 | { | |
847 | LOCK_SV_MUTEX; | |
848 | p->xpv_pv = (char*)PL_xpvnv_root; | |
849 | PL_xpvnv_root = p; | |
850 | UNLOCK_SV_MUTEX; | |
851 | } | |
852 | ||
645c22ef DM |
853 | /* allocate another arena's worth of struct xpvnv */ |
854 | ||
932e9ff9 VB |
855 | STATIC void |
856 | S_more_xpvnv(pTHX) | |
857 | { | |
858 | register XPVNV* xpvnv; | |
859 | register XPVNV* xpvnvend; | |
612f20c3 GS |
860 | New(715, xpvnv, 1008/sizeof(XPVNV), XPVNV); |
861 | xpvnv->xpv_pv = (char*)PL_xpvnv_arenaroot; | |
862 | PL_xpvnv_arenaroot = xpvnv; | |
863 | ||
932e9ff9 | 864 | xpvnvend = &xpvnv[1008 / sizeof(XPVNV) - 1]; |
612f20c3 | 865 | PL_xpvnv_root = ++xpvnv; |
932e9ff9 VB |
866 | while (xpvnv < xpvnvend) { |
867 | xpvnv->xpv_pv = (char*)(xpvnv + 1); | |
868 | xpvnv++; | |
869 | } | |
870 | xpvnv->xpv_pv = 0; | |
871 | } | |
872 | ||
645c22ef DM |
873 | /* grab a new struct xpvcv from the free list, allocating more if necessary */ |
874 | ||
932e9ff9 VB |
875 | STATIC XPVCV* |
876 | S_new_xpvcv(pTHX) | |
877 | { | |
878 | XPVCV* xpvcv; | |
879 | LOCK_SV_MUTEX; | |
880 | if (!PL_xpvcv_root) | |
881 | more_xpvcv(); | |
882 | xpvcv = PL_xpvcv_root; | |
883 | PL_xpvcv_root = (XPVCV*)xpvcv->xpv_pv; | |
884 | UNLOCK_SV_MUTEX; | |
885 | return xpvcv; | |
886 | } | |
887 | ||
645c22ef DM |
888 | /* return a struct xpvcv to the free list */ |
889 | ||
932e9ff9 VB |
890 | STATIC void |
891 | S_del_xpvcv(pTHX_ XPVCV *p) | |
892 | { | |
893 | LOCK_SV_MUTEX; | |
894 | p->xpv_pv = (char*)PL_xpvcv_root; | |
895 | PL_xpvcv_root = p; | |
896 | UNLOCK_SV_MUTEX; | |
897 | } | |
898 | ||
645c22ef DM |
899 | /* allocate another arena's worth of struct xpvcv */ |
900 | ||
932e9ff9 VB |
901 | STATIC void |
902 | S_more_xpvcv(pTHX) | |
903 | { | |
904 | register XPVCV* xpvcv; | |
905 | register XPVCV* xpvcvend; | |
612f20c3 GS |
906 | New(716, xpvcv, 1008/sizeof(XPVCV), XPVCV); |
907 | xpvcv->xpv_pv = (char*)PL_xpvcv_arenaroot; | |
908 | PL_xpvcv_arenaroot = xpvcv; | |
909 | ||
932e9ff9 | 910 | xpvcvend = &xpvcv[1008 / sizeof(XPVCV) - 1]; |
612f20c3 | 911 | PL_xpvcv_root = ++xpvcv; |
932e9ff9 VB |
912 | while (xpvcv < xpvcvend) { |
913 | xpvcv->xpv_pv = (char*)(xpvcv + 1); | |
914 | xpvcv++; | |
915 | } | |
916 | xpvcv->xpv_pv = 0; | |
917 | } | |
918 | ||
645c22ef DM |
919 | /* grab a new struct xpvav from the free list, allocating more if necessary */ |
920 | ||
932e9ff9 VB |
921 | STATIC XPVAV* |
922 | S_new_xpvav(pTHX) | |
923 | { | |
924 | XPVAV* xpvav; | |
925 | LOCK_SV_MUTEX; | |
926 | if (!PL_xpvav_root) | |
927 | more_xpvav(); | |
928 | xpvav = PL_xpvav_root; | |
929 | PL_xpvav_root = (XPVAV*)xpvav->xav_array; | |
930 | UNLOCK_SV_MUTEX; | |
931 | return xpvav; | |
932 | } | |
933 | ||
645c22ef DM |
934 | /* return a struct xpvav to the free list */ |
935 | ||
932e9ff9 VB |
936 | STATIC void |
937 | S_del_xpvav(pTHX_ XPVAV *p) | |
938 | { | |
939 | LOCK_SV_MUTEX; | |
940 | p->xav_array = (char*)PL_xpvav_root; | |
941 | PL_xpvav_root = p; | |
942 | UNLOCK_SV_MUTEX; | |
943 | } | |
944 | ||
645c22ef DM |
945 | /* allocate another arena's worth of struct xpvav */ |
946 | ||
932e9ff9 VB |
947 | STATIC void |
948 | S_more_xpvav(pTHX) | |
949 | { | |
950 | register XPVAV* xpvav; | |
951 | register XPVAV* xpvavend; | |
612f20c3 GS |
952 | New(717, xpvav, 1008/sizeof(XPVAV), XPVAV); |
953 | xpvav->xav_array = (char*)PL_xpvav_arenaroot; | |
954 | PL_xpvav_arenaroot = xpvav; | |
955 | ||
932e9ff9 | 956 | xpvavend = &xpvav[1008 / sizeof(XPVAV) - 1]; |
612f20c3 | 957 | PL_xpvav_root = ++xpvav; |
932e9ff9 VB |
958 | while (xpvav < xpvavend) { |
959 | xpvav->xav_array = (char*)(xpvav + 1); | |
960 | xpvav++; | |
961 | } | |
962 | xpvav->xav_array = 0; | |
963 | } | |
964 | ||
645c22ef DM |
965 | /* grab a new struct xpvhv from the free list, allocating more if necessary */ |
966 | ||
932e9ff9 VB |
967 | STATIC XPVHV* |
968 | S_new_xpvhv(pTHX) | |
969 | { | |
970 | XPVHV* xpvhv; | |
971 | LOCK_SV_MUTEX; | |
972 | if (!PL_xpvhv_root) | |
973 | more_xpvhv(); | |
974 | xpvhv = PL_xpvhv_root; | |
975 | PL_xpvhv_root = (XPVHV*)xpvhv->xhv_array; | |
976 | UNLOCK_SV_MUTEX; | |
977 | return xpvhv; | |
978 | } | |
979 | ||
645c22ef DM |
980 | /* return a struct xpvhv to the free list */ |
981 | ||
932e9ff9 VB |
982 | STATIC void |
983 | S_del_xpvhv(pTHX_ XPVHV *p) | |
984 | { | |
985 | LOCK_SV_MUTEX; | |
986 | p->xhv_array = (char*)PL_xpvhv_root; | |
987 | PL_xpvhv_root = p; | |
988 | UNLOCK_SV_MUTEX; | |
989 | } | |
990 | ||
645c22ef DM |
991 | /* allocate another arena's worth of struct xpvhv */ |
992 | ||
932e9ff9 VB |
993 | STATIC void |
994 | S_more_xpvhv(pTHX) | |
995 | { | |
996 | register XPVHV* xpvhv; | |
997 | register XPVHV* xpvhvend; | |
612f20c3 GS |
998 | New(718, xpvhv, 1008/sizeof(XPVHV), XPVHV); |
999 | xpvhv->xhv_array = (char*)PL_xpvhv_arenaroot; | |
1000 | PL_xpvhv_arenaroot = xpvhv; | |
1001 | ||
932e9ff9 | 1002 | xpvhvend = &xpvhv[1008 / sizeof(XPVHV) - 1]; |
612f20c3 | 1003 | PL_xpvhv_root = ++xpvhv; |
932e9ff9 VB |
1004 | while (xpvhv < xpvhvend) { |
1005 | xpvhv->xhv_array = (char*)(xpvhv + 1); | |
1006 | xpvhv++; | |
1007 | } | |
1008 | xpvhv->xhv_array = 0; | |
1009 | } | |
1010 | ||
645c22ef DM |
1011 | /* grab a new struct xpvmg from the free list, allocating more if necessary */ |
1012 | ||
932e9ff9 VB |
1013 | STATIC XPVMG* |
1014 | S_new_xpvmg(pTHX) | |
1015 | { | |
1016 | XPVMG* xpvmg; | |
1017 | LOCK_SV_MUTEX; | |
1018 | if (!PL_xpvmg_root) | |
1019 | more_xpvmg(); | |
1020 | xpvmg = PL_xpvmg_root; | |
1021 | PL_xpvmg_root = (XPVMG*)xpvmg->xpv_pv; | |
1022 | UNLOCK_SV_MUTEX; | |
1023 | return xpvmg; | |
1024 | } | |
1025 | ||
645c22ef DM |
1026 | /* return a struct xpvmg to the free list */ |
1027 | ||
932e9ff9 VB |
1028 | STATIC void |
1029 | S_del_xpvmg(pTHX_ XPVMG *p) | |
1030 | { | |
1031 | LOCK_SV_MUTEX; | |
1032 | p->xpv_pv = (char*)PL_xpvmg_root; | |
1033 | PL_xpvmg_root = p; | |
1034 | UNLOCK_SV_MUTEX; | |
1035 | } | |
1036 | ||
645c22ef DM |
1037 | /* allocate another arena's worth of struct xpvmg */ |
1038 | ||
932e9ff9 VB |
1039 | STATIC void |
1040 | S_more_xpvmg(pTHX) | |
1041 | { | |
1042 | register XPVMG* xpvmg; | |
1043 | register XPVMG* xpvmgend; | |
612f20c3 GS |
1044 | New(719, xpvmg, 1008/sizeof(XPVMG), XPVMG); |
1045 | xpvmg->xpv_pv = (char*)PL_xpvmg_arenaroot; | |
1046 | PL_xpvmg_arenaroot = xpvmg; | |
1047 | ||
932e9ff9 | 1048 | xpvmgend = &xpvmg[1008 / sizeof(XPVMG) - 1]; |
612f20c3 | 1049 | PL_xpvmg_root = ++xpvmg; |
932e9ff9 VB |
1050 | while (xpvmg < xpvmgend) { |
1051 | xpvmg->xpv_pv = (char*)(xpvmg + 1); | |
1052 | xpvmg++; | |
1053 | } | |
1054 | xpvmg->xpv_pv = 0; | |
1055 | } | |
1056 | ||
645c22ef DM |
1057 | /* grab a new struct xpvlv from the free list, allocating more if necessary */ |
1058 | ||
932e9ff9 VB |
1059 | STATIC XPVLV* |
1060 | S_new_xpvlv(pTHX) | |
1061 | { | |
1062 | XPVLV* xpvlv; | |
1063 | LOCK_SV_MUTEX; | |
1064 | if (!PL_xpvlv_root) | |
1065 | more_xpvlv(); | |
1066 | xpvlv = PL_xpvlv_root; | |
1067 | PL_xpvlv_root = (XPVLV*)xpvlv->xpv_pv; | |
1068 | UNLOCK_SV_MUTEX; | |
1069 | return xpvlv; | |
1070 | } | |
1071 | ||
645c22ef DM |
1072 | /* return a struct xpvlv to the free list */ |
1073 | ||
932e9ff9 VB |
1074 | STATIC void |
1075 | S_del_xpvlv(pTHX_ XPVLV *p) | |
1076 | { | |
1077 | LOCK_SV_MUTEX; | |
1078 | p->xpv_pv = (char*)PL_xpvlv_root; | |
1079 | PL_xpvlv_root = p; | |
1080 | UNLOCK_SV_MUTEX; | |
1081 | } | |
1082 | ||
645c22ef DM |
1083 | /* allocate another arena's worth of struct xpvlv */ |
1084 | ||
932e9ff9 VB |
1085 | STATIC void |
1086 | S_more_xpvlv(pTHX) | |
1087 | { | |
1088 | register XPVLV* xpvlv; | |
1089 | register XPVLV* xpvlvend; | |
612f20c3 GS |
1090 | New(720, xpvlv, 1008/sizeof(XPVLV), XPVLV); |
1091 | xpvlv->xpv_pv = (char*)PL_xpvlv_arenaroot; | |
1092 | PL_xpvlv_arenaroot = xpvlv; | |
1093 | ||
932e9ff9 | 1094 | xpvlvend = &xpvlv[1008 / sizeof(XPVLV) - 1]; |
612f20c3 | 1095 | PL_xpvlv_root = ++xpvlv; |
932e9ff9 VB |
1096 | while (xpvlv < xpvlvend) { |
1097 | xpvlv->xpv_pv = (char*)(xpvlv + 1); | |
1098 | xpvlv++; | |
1099 | } | |
1100 | xpvlv->xpv_pv = 0; | |
1101 | } | |
1102 | ||
645c22ef DM |
1103 | /* grab a new struct xpvbm from the free list, allocating more if necessary */ |
1104 | ||
932e9ff9 VB |
1105 | STATIC XPVBM* |
1106 | S_new_xpvbm(pTHX) | |
1107 | { | |
1108 | XPVBM* xpvbm; | |
1109 | LOCK_SV_MUTEX; | |
1110 | if (!PL_xpvbm_root) | |
1111 | more_xpvbm(); | |
1112 | xpvbm = PL_xpvbm_root; | |
1113 | PL_xpvbm_root = (XPVBM*)xpvbm->xpv_pv; | |
1114 | UNLOCK_SV_MUTEX; | |
1115 | return xpvbm; | |
1116 | } | |
1117 | ||
645c22ef DM |
1118 | /* return a struct xpvbm to the free list */ |
1119 | ||
932e9ff9 VB |
1120 | STATIC void |
1121 | S_del_xpvbm(pTHX_ XPVBM *p) | |
1122 | { | |
1123 | LOCK_SV_MUTEX; | |
1124 | p->xpv_pv = (char*)PL_xpvbm_root; | |
1125 | PL_xpvbm_root = p; | |
1126 | UNLOCK_SV_MUTEX; | |
1127 | } | |
1128 | ||
645c22ef DM |
1129 | /* allocate another arena's worth of struct xpvbm */ |
1130 | ||
932e9ff9 VB |
1131 | STATIC void |
1132 | S_more_xpvbm(pTHX) | |
1133 | { | |
1134 | register XPVBM* xpvbm; | |
1135 | register XPVBM* xpvbmend; | |
612f20c3 GS |
1136 | New(721, xpvbm, 1008/sizeof(XPVBM), XPVBM); |
1137 | xpvbm->xpv_pv = (char*)PL_xpvbm_arenaroot; | |
1138 | PL_xpvbm_arenaroot = xpvbm; | |
1139 | ||
932e9ff9 | 1140 | xpvbmend = &xpvbm[1008 / sizeof(XPVBM) - 1]; |
612f20c3 | 1141 | PL_xpvbm_root = ++xpvbm; |
932e9ff9 VB |
1142 | while (xpvbm < xpvbmend) { |
1143 | xpvbm->xpv_pv = (char*)(xpvbm + 1); | |
1144 | xpvbm++; | |
1145 | } | |
1146 | xpvbm->xpv_pv = 0; | |
1147 | } | |
1148 | ||
7bab3ede MB |
1149 | #define my_safemalloc(s) (void*)safemalloc(s) |
1150 | #define my_safefree(p) safefree((char*)p) | |
463ee0b2 | 1151 | |
d33b2eba | 1152 | #ifdef PURIFY |
463ee0b2 | 1153 | |
d33b2eba GS |
1154 | #define new_XIV() my_safemalloc(sizeof(XPVIV)) |
1155 | #define del_XIV(p) my_safefree(p) | |
ed6116ce | 1156 | |
d33b2eba GS |
1157 | #define new_XNV() my_safemalloc(sizeof(XPVNV)) |
1158 | #define del_XNV(p) my_safefree(p) | |
463ee0b2 | 1159 | |
d33b2eba GS |
1160 | #define new_XRV() my_safemalloc(sizeof(XRV)) |
1161 | #define del_XRV(p) my_safefree(p) | |
8c52afec | 1162 | |
d33b2eba GS |
1163 | #define new_XPV() my_safemalloc(sizeof(XPV)) |
1164 | #define del_XPV(p) my_safefree(p) | |
9b94d1dd | 1165 | |
d33b2eba GS |
1166 | #define new_XPVIV() my_safemalloc(sizeof(XPVIV)) |
1167 | #define del_XPVIV(p) my_safefree(p) | |
932e9ff9 | 1168 | |
d33b2eba GS |
1169 | #define new_XPVNV() my_safemalloc(sizeof(XPVNV)) |
1170 | #define del_XPVNV(p) my_safefree(p) | |
932e9ff9 | 1171 | |
d33b2eba GS |
1172 | #define new_XPVCV() my_safemalloc(sizeof(XPVCV)) |
1173 | #define del_XPVCV(p) my_safefree(p) | |
932e9ff9 | 1174 | |
d33b2eba GS |
1175 | #define new_XPVAV() my_safemalloc(sizeof(XPVAV)) |
1176 | #define del_XPVAV(p) my_safefree(p) | |
1177 | ||
1178 | #define new_XPVHV() my_safemalloc(sizeof(XPVHV)) | |
1179 | #define del_XPVHV(p) my_safefree(p) | |
1c846c1f | 1180 | |
d33b2eba GS |
1181 | #define new_XPVMG() my_safemalloc(sizeof(XPVMG)) |
1182 | #define del_XPVMG(p) my_safefree(p) | |
1183 | ||
1184 | #define new_XPVLV() my_safemalloc(sizeof(XPVLV)) | |
1185 | #define del_XPVLV(p) my_safefree(p) | |
1186 | ||
1187 | #define new_XPVBM() my_safemalloc(sizeof(XPVBM)) | |
1188 | #define del_XPVBM(p) my_safefree(p) | |
1189 | ||
1190 | #else /* !PURIFY */ | |
1191 | ||
1192 | #define new_XIV() (void*)new_xiv() | |
1193 | #define del_XIV(p) del_xiv((XPVIV*) p) | |
1194 | ||
1195 | #define new_XNV() (void*)new_xnv() | |
1196 | #define del_XNV(p) del_xnv((XPVNV*) p) | |
9b94d1dd | 1197 | |
d33b2eba GS |
1198 | #define new_XRV() (void*)new_xrv() |
1199 | #define del_XRV(p) del_xrv((XRV*) p) | |
9b94d1dd | 1200 | |
d33b2eba GS |
1201 | #define new_XPV() (void*)new_xpv() |
1202 | #define del_XPV(p) del_xpv((XPV *)p) | |
1203 | ||
1204 | #define new_XPVIV() (void*)new_xpviv() | |
1205 | #define del_XPVIV(p) del_xpviv((XPVIV *)p) | |
1206 | ||
1207 | #define new_XPVNV() (void*)new_xpvnv() | |
1208 | #define del_XPVNV(p) del_xpvnv((XPVNV *)p) | |
1209 | ||
1210 | #define new_XPVCV() (void*)new_xpvcv() | |
1211 | #define del_XPVCV(p) del_xpvcv((XPVCV *)p) | |
1212 | ||
1213 | #define new_XPVAV() (void*)new_xpvav() | |
1214 | #define del_XPVAV(p) del_xpvav((XPVAV *)p) | |
1215 | ||
1216 | #define new_XPVHV() (void*)new_xpvhv() | |
1217 | #define del_XPVHV(p) del_xpvhv((XPVHV *)p) | |
1c846c1f | 1218 | |
d33b2eba GS |
1219 | #define new_XPVMG() (void*)new_xpvmg() |
1220 | #define del_XPVMG(p) del_xpvmg((XPVMG *)p) | |
1221 | ||
1222 | #define new_XPVLV() (void*)new_xpvlv() | |
1223 | #define del_XPVLV(p) del_xpvlv((XPVLV *)p) | |
1224 | ||
1225 | #define new_XPVBM() (void*)new_xpvbm() | |
1226 | #define del_XPVBM(p) del_xpvbm((XPVBM *)p) | |
1227 | ||
1228 | #endif /* PURIFY */ | |
9b94d1dd | 1229 | |
d33b2eba GS |
1230 | #define new_XPVGV() my_safemalloc(sizeof(XPVGV)) |
1231 | #define del_XPVGV(p) my_safefree(p) | |
1c846c1f | 1232 | |
d33b2eba GS |
1233 | #define new_XPVFM() my_safemalloc(sizeof(XPVFM)) |
1234 | #define del_XPVFM(p) my_safefree(p) | |
1c846c1f | 1235 | |
d33b2eba GS |
1236 | #define new_XPVIO() my_safemalloc(sizeof(XPVIO)) |
1237 | #define del_XPVIO(p) my_safefree(p) | |
8990e307 | 1238 | |
954c1994 GS |
1239 | /* |
1240 | =for apidoc sv_upgrade | |
1241 | ||
ff276b08 | 1242 | Upgrade an SV to a more complex form. Generally adds a new body type to the |
645c22ef | 1243 | SV, then copies across as much information as possible from the old body. |
ff276b08 | 1244 | You generally want to use the C<SvUPGRADE> macro wrapper. See also C<svtype>. |
954c1994 GS |
1245 | |
1246 | =cut | |
1247 | */ | |
1248 | ||
79072805 | 1249 | bool |
864dbfa3 | 1250 | Perl_sv_upgrade(pTHX_ register SV *sv, U32 mt) |
79072805 | 1251 | { |
c04a4dfe JH |
1252 | char* pv = NULL; |
1253 | U32 cur = 0; | |
1254 | U32 len = 0; | |
1255 | IV iv = 0; | |
1256 | NV nv = 0.0; | |
1257 | MAGIC* magic = NULL; | |
1258 | HV* stash = Nullhv; | |
79072805 | 1259 | |
765f542d NC |
1260 | if (mt != SVt_PV && SvIsCOW(sv)) { |
1261 | sv_force_normal_flags(sv, 0); | |
f130fd45 NIS |
1262 | } |
1263 | ||
79072805 LW |
1264 | if (SvTYPE(sv) == mt) |
1265 | return TRUE; | |
1266 | ||
a5f75d66 AD |
1267 | if (mt < SVt_PVIV) |
1268 | (void)SvOOK_off(sv); | |
1269 | ||
79072805 LW |
1270 | switch (SvTYPE(sv)) { |
1271 | case SVt_NULL: | |
1272 | pv = 0; | |
1273 | cur = 0; | |
1274 | len = 0; | |
1275 | iv = 0; | |
1276 | nv = 0.0; | |
1277 | magic = 0; | |
1278 | stash = 0; | |
1279 | break; | |
79072805 LW |
1280 | case SVt_IV: |
1281 | pv = 0; | |
1282 | cur = 0; | |
1283 | len = 0; | |
463ee0b2 | 1284 | iv = SvIVX(sv); |
65202027 | 1285 | nv = (NV)SvIVX(sv); |
79072805 LW |
1286 | del_XIV(SvANY(sv)); |
1287 | magic = 0; | |
1288 | stash = 0; | |
ed6116ce | 1289 | if (mt == SVt_NV) |
463ee0b2 | 1290 | mt = SVt_PVNV; |
ed6116ce LW |
1291 | else if (mt < SVt_PVIV) |
1292 | mt = SVt_PVIV; | |
79072805 LW |
1293 | break; |
1294 | case SVt_NV: | |
1295 | pv = 0; | |
1296 | cur = 0; | |
1297 | len = 0; | |
463ee0b2 | 1298 | nv = SvNVX(sv); |
1bd302c3 | 1299 | iv = I_V(nv); |
79072805 LW |
1300 | magic = 0; |
1301 | stash = 0; | |
1302 | del_XNV(SvANY(sv)); | |
1303 | SvANY(sv) = 0; | |
ed6116ce | 1304 | if (mt < SVt_PVNV) |
79072805 LW |
1305 | mt = SVt_PVNV; |
1306 | break; | |
ed6116ce LW |
1307 | case SVt_RV: |
1308 | pv = (char*)SvRV(sv); | |
1309 | cur = 0; | |
1310 | len = 0; | |
56431972 RB |
1311 | iv = PTR2IV(pv); |
1312 | nv = PTR2NV(pv); | |
ed6116ce LW |
1313 | del_XRV(SvANY(sv)); |
1314 | magic = 0; | |
1315 | stash = 0; | |
1316 | break; | |
79072805 | 1317 | case SVt_PV: |
463ee0b2 | 1318 | pv = SvPVX(sv); |
79072805 LW |
1319 | cur = SvCUR(sv); |
1320 | len = SvLEN(sv); | |
1321 | iv = 0; | |
1322 | nv = 0.0; | |
1323 | magic = 0; | |
1324 | stash = 0; | |
1325 | del_XPV(SvANY(sv)); | |
748a9306 LW |
1326 | if (mt <= SVt_IV) |
1327 | mt = SVt_PVIV; | |
1328 | else if (mt == SVt_NV) | |
1329 | mt = SVt_PVNV; | |
79072805 LW |
1330 | break; |
1331 | case SVt_PVIV: | |
463ee0b2 | 1332 | pv = SvPVX(sv); |
79072805 LW |
1333 | cur = SvCUR(sv); |
1334 | len = SvLEN(sv); | |
463ee0b2 | 1335 | iv = SvIVX(sv); |
79072805 LW |
1336 | nv = 0.0; |
1337 | magic = 0; | |
1338 | stash = 0; | |
1339 | del_XPVIV(SvANY(sv)); | |
1340 | break; | |
1341 | case SVt_PVNV: | |
463ee0b2 | 1342 | pv = SvPVX(sv); |
79072805 LW |
1343 | cur = SvCUR(sv); |
1344 | len = SvLEN(sv); | |
463ee0b2 LW |
1345 | iv = SvIVX(sv); |
1346 | nv = SvNVX(sv); | |
79072805 LW |
1347 | magic = 0; |
1348 | stash = 0; | |
1349 | del_XPVNV(SvANY(sv)); | |
1350 | break; | |
1351 | case SVt_PVMG: | |
463ee0b2 | 1352 | pv = SvPVX(sv); |
79072805 LW |
1353 | cur = SvCUR(sv); |
1354 | len = SvLEN(sv); | |
463ee0b2 LW |
1355 | iv = SvIVX(sv); |
1356 | nv = SvNVX(sv); | |
79072805 LW |
1357 | magic = SvMAGIC(sv); |
1358 | stash = SvSTASH(sv); | |
1359 | del_XPVMG(SvANY(sv)); | |
1360 | break; | |
1361 | default: | |
cea2e8a9 | 1362 | Perl_croak(aTHX_ "Can't upgrade that kind of scalar"); |
79072805 LW |
1363 | } |
1364 | ||
1365 | switch (mt) { | |
1366 | case SVt_NULL: | |
cea2e8a9 | 1367 | Perl_croak(aTHX_ "Can't upgrade to undef"); |
79072805 LW |
1368 | case SVt_IV: |
1369 | SvANY(sv) = new_XIV(); | |
463ee0b2 | 1370 | SvIVX(sv) = iv; |
79072805 LW |
1371 | break; |
1372 | case SVt_NV: | |
1373 | SvANY(sv) = new_XNV(); | |
463ee0b2 | 1374 | SvNVX(sv) = nv; |
79072805 | 1375 | break; |
ed6116ce LW |
1376 | case SVt_RV: |
1377 | SvANY(sv) = new_XRV(); | |
1378 | SvRV(sv) = (SV*)pv; | |
ed6116ce | 1379 | break; |
79072805 LW |
1380 | case SVt_PV: |
1381 | SvANY(sv) = new_XPV(); | |
463ee0b2 | 1382 | SvPVX(sv) = pv; |
79072805 LW |
1383 | SvCUR(sv) = cur; |
1384 | SvLEN(sv) = len; | |
1385 | break; | |
1386 | case SVt_PVIV: | |
1387 | SvANY(sv) = new_XPVIV(); | |
463ee0b2 | 1388 | SvPVX(sv) = pv; |
79072805 LW |
1389 | SvCUR(sv) = cur; |
1390 | SvLEN(sv) = len; | |
463ee0b2 | 1391 | SvIVX(sv) = iv; |
79072805 | 1392 | if (SvNIOK(sv)) |
a0d0e21e | 1393 | (void)SvIOK_on(sv); |
79072805 LW |
1394 | SvNOK_off(sv); |
1395 | break; | |
1396 | case SVt_PVNV: | |
1397 | SvANY(sv) = new_XPVNV(); | |
463ee0b2 | 1398 | SvPVX(sv) = pv; |
79072805 LW |
1399 | SvCUR(sv) = cur; |
1400 | SvLEN(sv) = len; | |
463ee0b2 LW |
1401 | SvIVX(sv) = iv; |
1402 | SvNVX(sv) = nv; | |
79072805 LW |
1403 | break; |
1404 | case SVt_PVMG: | |
1405 | SvANY(sv) = new_XPVMG(); | |
463ee0b2 | 1406 | SvPVX(sv) = pv; |
79072805 LW |
1407 | SvCUR(sv) = cur; |
1408 | SvLEN(sv) = len; | |
463ee0b2 LW |
1409 | SvIVX(sv) = iv; |
1410 | SvNVX(sv) = nv; | |
79072805 LW |
1411 | SvMAGIC(sv) = magic; |
1412 | SvSTASH(sv) = stash; | |
1413 | break; | |
1414 | case SVt_PVLV: | |
1415 | SvANY(sv) = new_XPVLV(); | |
463ee0b2 | 1416 | SvPVX(sv) = pv; |
79072805 LW |
1417 | SvCUR(sv) = cur; |
1418 | SvLEN(sv) = len; | |
463ee0b2 LW |
1419 | SvIVX(sv) = iv; |
1420 | SvNVX(sv) = nv; | |
79072805 LW |
1421 | SvMAGIC(sv) = magic; |
1422 | SvSTASH(sv) = stash; | |
1423 | LvTARGOFF(sv) = 0; | |
1424 | LvTARGLEN(sv) = 0; | |
1425 | LvTARG(sv) = 0; | |
1426 | LvTYPE(sv) = 0; | |
1427 | break; | |
1428 | case SVt_PVAV: | |
1429 | SvANY(sv) = new_XPVAV(); | |
463ee0b2 LW |
1430 | if (pv) |
1431 | Safefree(pv); | |
2304df62 | 1432 | SvPVX(sv) = 0; |
d1bf51dd | 1433 | AvMAX(sv) = -1; |
93965878 | 1434 | AvFILLp(sv) = -1; |
463ee0b2 LW |
1435 | SvIVX(sv) = 0; |
1436 | SvNVX(sv) = 0.0; | |
1437 | SvMAGIC(sv) = magic; | |
1438 | SvSTASH(sv) = stash; | |
1439 | AvALLOC(sv) = 0; | |
79072805 LW |
1440 | AvARYLEN(sv) = 0; |
1441 | AvFLAGS(sv) = 0; | |
1442 | break; | |
1443 | case SVt_PVHV: | |
1444 | SvANY(sv) = new_XPVHV(); | |
463ee0b2 LW |
1445 | if (pv) |
1446 | Safefree(pv); | |
1447 | SvPVX(sv) = 0; | |
1448 | HvFILL(sv) = 0; | |
1449 | HvMAX(sv) = 0; | |
8aacddc1 NIS |
1450 | HvTOTALKEYS(sv) = 0; |
1451 | HvPLACEHOLDERS(sv) = 0; | |
79072805 LW |
1452 | SvMAGIC(sv) = magic; |
1453 | SvSTASH(sv) = stash; | |
79072805 LW |
1454 | HvRITER(sv) = 0; |
1455 | HvEITER(sv) = 0; | |
1456 | HvPMROOT(sv) = 0; | |
1457 | HvNAME(sv) = 0; | |
79072805 LW |
1458 | break; |
1459 | case SVt_PVCV: | |
1460 | SvANY(sv) = new_XPVCV(); | |
748a9306 | 1461 | Zero(SvANY(sv), 1, XPVCV); |
463ee0b2 | 1462 | SvPVX(sv) = pv; |
79072805 LW |
1463 | SvCUR(sv) = cur; |
1464 | SvLEN(sv) = len; | |
463ee0b2 LW |
1465 | SvIVX(sv) = iv; |
1466 | SvNVX(sv) = nv; | |
79072805 LW |
1467 | SvMAGIC(sv) = magic; |
1468 | SvSTASH(sv) = stash; | |
79072805 LW |
1469 | break; |
1470 | case SVt_PVGV: | |
1471 | SvANY(sv) = new_XPVGV(); | |
463ee0b2 | 1472 | SvPVX(sv) = pv; |
79072805 LW |
1473 | SvCUR(sv) = cur; |
1474 | SvLEN(sv) = len; | |
463ee0b2 LW |
1475 | SvIVX(sv) = iv; |
1476 | SvNVX(sv) = nv; | |
79072805 LW |
1477 | SvMAGIC(sv) = magic; |
1478 | SvSTASH(sv) = stash; | |
93a17b20 | 1479 | GvGP(sv) = 0; |
79072805 LW |
1480 | GvNAME(sv) = 0; |
1481 | GvNAMELEN(sv) = 0; | |
1482 | GvSTASH(sv) = 0; | |
a5f75d66 | 1483 | GvFLAGS(sv) = 0; |
79072805 LW |
1484 | break; |
1485 | case SVt_PVBM: | |
1486 | SvANY(sv) = new_XPVBM(); | |
463ee0b2 | 1487 | SvPVX(sv) = pv; |
79072805 LW |
1488 | SvCUR(sv) = cur; |
1489 | SvLEN(sv) = len; | |
463ee0b2 LW |
1490 | SvIVX(sv) = iv; |
1491 | SvNVX(sv) = nv; | |
79072805 LW |
1492 | SvMAGIC(sv) = magic; |
1493 | SvSTASH(sv) = stash; | |
1494 | BmRARE(sv) = 0; | |
1495 | BmUSEFUL(sv) = 0; | |
1496 | BmPREVIOUS(sv) = 0; | |
1497 | break; | |
1498 | case SVt_PVFM: | |
1499 | SvANY(sv) = new_XPVFM(); | |
748a9306 | 1500 | Zero(SvANY(sv), 1, XPVFM); |
463ee0b2 | 1501 | SvPVX(sv) = pv; |
79072805 LW |
1502 | SvCUR(sv) = cur; |
1503 | SvLEN(sv) = len; | |
463ee0b2 LW |
1504 | SvIVX(sv) = iv; |
1505 | SvNVX(sv) = nv; | |
79072805 LW |
1506 | SvMAGIC(sv) = magic; |
1507 | SvSTASH(sv) = stash; | |
79072805 | 1508 | break; |
8990e307 LW |
1509 | case SVt_PVIO: |
1510 | SvANY(sv) = new_XPVIO(); | |
748a9306 | 1511 | Zero(SvANY(sv), 1, XPVIO); |
8990e307 LW |
1512 | SvPVX(sv) = pv; |
1513 | SvCUR(sv) = cur; | |
1514 | SvLEN(sv) = len; | |
1515 | SvIVX(sv) = iv; | |
1516 | SvNVX(sv) = nv; | |
1517 | SvMAGIC(sv) = magic; | |
1518 | SvSTASH(sv) = stash; | |
85e6fe83 | 1519 | IoPAGE_LEN(sv) = 60; |
8990e307 LW |
1520 | break; |
1521 | } | |
1522 | SvFLAGS(sv) &= ~SVTYPEMASK; | |
1523 | SvFLAGS(sv) |= mt; | |
79072805 LW |
1524 | return TRUE; |
1525 | } | |
1526 | ||
645c22ef DM |
1527 | /* |
1528 | =for apidoc sv_backoff | |
1529 | ||
1530 | Remove any string offset. You should normally use the C<SvOOK_off> macro | |
1531 | wrapper instead. | |
1532 | ||
1533 | =cut | |
1534 | */ | |
1535 | ||
79072805 | 1536 | int |
864dbfa3 | 1537 | Perl_sv_backoff(pTHX_ register SV *sv) |
79072805 LW |
1538 | { |
1539 | assert(SvOOK(sv)); | |
463ee0b2 LW |
1540 | if (SvIVX(sv)) { |
1541 | char *s = SvPVX(sv); | |
1542 | SvLEN(sv) += SvIVX(sv); | |
1543 | SvPVX(sv) -= SvIVX(sv); | |
79072805 | 1544 | SvIV_set(sv, 0); |
463ee0b2 | 1545 | Move(s, SvPVX(sv), SvCUR(sv)+1, char); |
79072805 LW |
1546 | } |
1547 | SvFLAGS(sv) &= ~SVf_OOK; | |
a0d0e21e | 1548 | return 0; |
79072805 LW |
1549 | } |
1550 | ||
954c1994 GS |
1551 | /* |
1552 | =for apidoc sv_grow | |
1553 | ||
645c22ef DM |
1554 | Expands the character buffer in the SV. If necessary, uses C<sv_unref> and |
1555 | upgrades the SV to C<SVt_PV>. Returns a pointer to the character buffer. | |
1556 | Use the C<SvGROW> wrapper instead. | |
954c1994 GS |
1557 | |
1558 | =cut | |
1559 | */ | |
1560 | ||
79072805 | 1561 | char * |
864dbfa3 | 1562 | Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen) |
79072805 LW |
1563 | { |
1564 | register char *s; | |
1565 | ||
55497cff | 1566 | #ifdef HAS_64K_LIMIT |
79072805 | 1567 | if (newlen >= 0x10000) { |
1d7c1841 GS |
1568 | PerlIO_printf(Perl_debug_log, |
1569 | "Allocation too large: %"UVxf"\n", (UV)newlen); | |
79072805 LW |
1570 | my_exit(1); |
1571 | } | |
55497cff | 1572 | #endif /* HAS_64K_LIMIT */ |
a0d0e21e LW |
1573 | if (SvROK(sv)) |
1574 | sv_unref(sv); | |
79072805 LW |
1575 | if (SvTYPE(sv) < SVt_PV) { |
1576 | sv_upgrade(sv, SVt_PV); | |
463ee0b2 | 1577 | s = SvPVX(sv); |
79072805 LW |
1578 | } |
1579 | else if (SvOOK(sv)) { /* pv is offset? */ | |
1580 | sv_backoff(sv); | |
463ee0b2 | 1581 | s = SvPVX(sv); |
79072805 LW |
1582 | if (newlen > SvLEN(sv)) |
1583 | newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */ | |
c6f8c383 GA |
1584 | #ifdef HAS_64K_LIMIT |
1585 | if (newlen >= 0x10000) | |
1586 | newlen = 0xFFFF; | |
1587 | #endif | |
79072805 | 1588 | } |
bc44a8a2 | 1589 | else |
463ee0b2 | 1590 | s = SvPVX(sv); |
54f0641b | 1591 | |
79072805 | 1592 | if (newlen > SvLEN(sv)) { /* need more room? */ |
8d6dde3e | 1593 | if (SvLEN(sv) && s) { |
7bab3ede | 1594 | #ifdef MYMALLOC |
8d6dde3e IZ |
1595 | STRLEN l = malloced_size((void*)SvPVX(sv)); |
1596 | if (newlen <= l) { | |
1597 | SvLEN_set(sv, l); | |
1598 | return s; | |
1599 | } else | |
c70c8a0a | 1600 | #endif |
79072805 | 1601 | Renew(s,newlen,char); |
8d6dde3e | 1602 | } |
4e83176d | 1603 | else { |
4e83176d | 1604 | New(703, s, newlen, char); |
40565179 | 1605 | if (SvPVX(sv) && SvCUR(sv)) { |
54f0641b | 1606 | Move(SvPVX(sv), s, (newlen < SvCUR(sv)) ? newlen : SvCUR(sv), char); |
40565179 | 1607 | } |
4e83176d | 1608 | } |
79072805 LW |
1609 | SvPV_set(sv, s); |
1610 | SvLEN_set(sv, newlen); | |
1611 | } | |
1612 | return s; | |
1613 | } | |
1614 | ||
954c1994 GS |
1615 | /* |
1616 | =for apidoc sv_setiv | |
1617 | ||
645c22ef DM |
1618 | Copies an integer into the given SV, upgrading first if necessary. |
1619 | Does not handle 'set' magic. See also C<sv_setiv_mg>. | |
954c1994 GS |
1620 | |
1621 | =cut | |
1622 | */ | |
1623 | ||
79072805 | 1624 | void |
864dbfa3 | 1625 | Perl_sv_setiv(pTHX_ register SV *sv, IV i) |
79072805 | 1626 | { |
765f542d | 1627 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 LW |
1628 | switch (SvTYPE(sv)) { |
1629 | case SVt_NULL: | |
79072805 | 1630 | sv_upgrade(sv, SVt_IV); |
463ee0b2 LW |
1631 | break; |
1632 | case SVt_NV: | |
1633 | sv_upgrade(sv, SVt_PVNV); | |
1634 | break; | |
ed6116ce | 1635 | case SVt_RV: |
463ee0b2 | 1636 | case SVt_PV: |
79072805 | 1637 | sv_upgrade(sv, SVt_PVIV); |
463ee0b2 | 1638 | break; |
a0d0e21e LW |
1639 | |
1640 | case SVt_PVGV: | |
a0d0e21e LW |
1641 | case SVt_PVAV: |
1642 | case SVt_PVHV: | |
1643 | case SVt_PVCV: | |
1644 | case SVt_PVFM: | |
1645 | case SVt_PVIO: | |
411caa50 | 1646 | Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0), |
53e06cf0 | 1647 | OP_DESC(PL_op)); |
463ee0b2 | 1648 | } |
a0d0e21e | 1649 | (void)SvIOK_only(sv); /* validate number */ |
a5f75d66 | 1650 | SvIVX(sv) = i; |
463ee0b2 | 1651 | SvTAINT(sv); |
79072805 LW |
1652 | } |
1653 | ||
954c1994 GS |
1654 | /* |
1655 | =for apidoc sv_setiv_mg | |
1656 | ||
1657 | Like C<sv_setiv>, but also handles 'set' magic. | |
1658 | ||
1659 | =cut | |
1660 | */ | |
1661 | ||
79072805 | 1662 | void |
864dbfa3 | 1663 | Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i) |
ef50df4b GS |
1664 | { |
1665 | sv_setiv(sv,i); | |
1666 | SvSETMAGIC(sv); | |
1667 | } | |
1668 | ||
954c1994 GS |
1669 | /* |
1670 | =for apidoc sv_setuv | |
1671 | ||
645c22ef DM |
1672 | Copies an unsigned integer into the given SV, upgrading first if necessary. |
1673 | Does not handle 'set' magic. See also C<sv_setuv_mg>. | |
954c1994 GS |
1674 | |
1675 | =cut | |
1676 | */ | |
1677 | ||
ef50df4b | 1678 | void |
864dbfa3 | 1679 | Perl_sv_setuv(pTHX_ register SV *sv, UV u) |
55497cff | 1680 | { |
55ada374 NC |
1681 | /* With these two if statements: |
1682 | u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865 | |
d460ef45 | 1683 | |
55ada374 NC |
1684 | without |
1685 | u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865 | |
d460ef45 | 1686 | |
55ada374 NC |
1687 | If you wish to remove them, please benchmark to see what the effect is |
1688 | */ | |
28e5dec8 JH |
1689 | if (u <= (UV)IV_MAX) { |
1690 | sv_setiv(sv, (IV)u); | |
1691 | return; | |
1692 | } | |
25da4f38 IZ |
1693 | sv_setiv(sv, 0); |
1694 | SvIsUV_on(sv); | |
1695 | SvUVX(sv) = u; | |
55497cff | 1696 | } |
1697 | ||
954c1994 GS |
1698 | /* |
1699 | =for apidoc sv_setuv_mg | |
1700 | ||
1701 | Like C<sv_setuv>, but also handles 'set' magic. | |
1702 | ||
1703 | =cut | |
1704 | */ | |
1705 | ||
55497cff | 1706 | void |
864dbfa3 | 1707 | Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u) |
ef50df4b | 1708 | { |
55ada374 NC |
1709 | /* With these two if statements: |
1710 | u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865 | |
d460ef45 | 1711 | |
55ada374 NC |
1712 | without |
1713 | u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865 | |
d460ef45 | 1714 | |
55ada374 NC |
1715 | If you wish to remove them, please benchmark to see what the effect is |
1716 | */ | |
28e5dec8 JH |
1717 | if (u <= (UV)IV_MAX) { |
1718 | sv_setiv(sv, (IV)u); | |
1719 | } else { | |
1720 | sv_setiv(sv, 0); | |
1721 | SvIsUV_on(sv); | |
1722 | sv_setuv(sv,u); | |
1723 | } | |
ef50df4b GS |
1724 | SvSETMAGIC(sv); |
1725 | } | |
1726 | ||
954c1994 GS |
1727 | /* |
1728 | =for apidoc sv_setnv | |
1729 | ||
645c22ef DM |
1730 | Copies a double into the given SV, upgrading first if necessary. |
1731 | Does not handle 'set' magic. See also C<sv_setnv_mg>. | |
954c1994 GS |
1732 | |
1733 | =cut | |
1734 | */ | |
1735 | ||
ef50df4b | 1736 | void |
65202027 | 1737 | Perl_sv_setnv(pTHX_ register SV *sv, NV num) |
79072805 | 1738 | { |
765f542d | 1739 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
a0d0e21e LW |
1740 | switch (SvTYPE(sv)) { |
1741 | case SVt_NULL: | |
1742 | case SVt_IV: | |
79072805 | 1743 | sv_upgrade(sv, SVt_NV); |
a0d0e21e | 1744 | break; |
a0d0e21e LW |
1745 | case SVt_RV: |
1746 | case SVt_PV: | |
1747 | case SVt_PVIV: | |
79072805 | 1748 | sv_upgrade(sv, SVt_PVNV); |
a0d0e21e | 1749 | break; |
827b7e14 | 1750 | |
a0d0e21e | 1751 | case SVt_PVGV: |
a0d0e21e LW |
1752 | case SVt_PVAV: |
1753 | case SVt_PVHV: | |
1754 | case SVt_PVCV: | |
1755 | case SVt_PVFM: | |
1756 | case SVt_PVIO: | |
411caa50 | 1757 | Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0), |
53e06cf0 | 1758 | OP_NAME(PL_op)); |
79072805 | 1759 | } |
463ee0b2 | 1760 | SvNVX(sv) = num; |
a0d0e21e | 1761 | (void)SvNOK_only(sv); /* validate number */ |
463ee0b2 | 1762 | SvTAINT(sv); |
79072805 LW |
1763 | } |
1764 | ||
954c1994 GS |
1765 | /* |
1766 | =for apidoc sv_setnv_mg | |
1767 | ||
1768 | Like C<sv_setnv>, but also handles 'set' magic. | |
1769 | ||
1770 | =cut | |
1771 | */ | |
1772 | ||
ef50df4b | 1773 | void |
65202027 | 1774 | Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num) |
ef50df4b GS |
1775 | { |
1776 | sv_setnv(sv,num); | |
1777 | SvSETMAGIC(sv); | |
1778 | } | |
1779 | ||
645c22ef DM |
1780 | /* Print an "isn't numeric" warning, using a cleaned-up, |
1781 | * printable version of the offending string | |
1782 | */ | |
1783 | ||
76e3520e | 1784 | STATIC void |
cea2e8a9 | 1785 | S_not_a_number(pTHX_ SV *sv) |
a0d0e21e | 1786 | { |
94463019 JH |
1787 | SV *dsv; |
1788 | char tmpbuf[64]; | |
1789 | char *pv; | |
1790 | ||
1791 | if (DO_UTF8(sv)) { | |
1792 | dsv = sv_2mortal(newSVpv("", 0)); | |
1793 | pv = sv_uni_display(dsv, sv, 10, 0); | |
1794 | } else { | |
1795 | char *d = tmpbuf; | |
1796 | char *limit = tmpbuf + sizeof(tmpbuf) - 8; | |
1797 | /* each *s can expand to 4 chars + "...\0", | |
1798 | i.e. need room for 8 chars */ | |
ecdeb87c | 1799 | |
94463019 JH |
1800 | char *s, *end; |
1801 | for (s = SvPVX(sv), end = s + SvCUR(sv); s < end && d < limit; s++) { | |
1802 | int ch = *s & 0xFF; | |
1803 | if (ch & 128 && !isPRINT_LC(ch)) { | |
1804 | *d++ = 'M'; | |
1805 | *d++ = '-'; | |
1806 | ch &= 127; | |
1807 | } | |
1808 | if (ch == '\n') { | |
1809 | *d++ = '\\'; | |
1810 | *d++ = 'n'; | |
1811 | } | |
1812 | else if (ch == '\r') { | |
1813 | *d++ = '\\'; | |
1814 | *d++ = 'r'; | |
1815 | } | |
1816 | else if (ch == '\f') { | |
1817 | *d++ = '\\'; | |
1818 | *d++ = 'f'; | |
1819 | } | |
1820 | else if (ch == '\\') { | |
1821 | *d++ = '\\'; | |
1822 | *d++ = '\\'; | |
1823 | } | |
1824 | else if (ch == '\0') { | |
1825 | *d++ = '\\'; | |
1826 | *d++ = '0'; | |
1827 | } | |
1828 | else if (isPRINT_LC(ch)) | |
1829 | *d++ = ch; | |
1830 | else { | |
1831 | *d++ = '^'; | |
1832 | *d++ = toCTRL(ch); | |
1833 | } | |
1834 | } | |
1835 | if (s < end) { | |
1836 | *d++ = '.'; | |
1837 | *d++ = '.'; | |
1838 | *d++ = '.'; | |
1839 | } | |
1840 | *d = '\0'; | |
1841 | pv = tmpbuf; | |
a0d0e21e | 1842 | } |
a0d0e21e | 1843 | |
533c011a | 1844 | if (PL_op) |
9014280d | 1845 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 JH |
1846 | "Argument \"%s\" isn't numeric in %s", pv, |
1847 | OP_DESC(PL_op)); | |
a0d0e21e | 1848 | else |
9014280d | 1849 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 | 1850 | "Argument \"%s\" isn't numeric", pv); |
a0d0e21e LW |
1851 | } |
1852 | ||
c2988b20 NC |
1853 | /* |
1854 | =for apidoc looks_like_number | |
1855 | ||
645c22ef DM |
1856 | Test if the content of an SV looks like a number (or is a number). |
1857 | C<Inf> and C<Infinity> are treated as numbers (so will not issue a | |
1858 | non-numeric warning), even if your atof() doesn't grok them. | |
c2988b20 NC |
1859 | |
1860 | =cut | |
1861 | */ | |
1862 | ||
1863 | I32 | |
1864 | Perl_looks_like_number(pTHX_ SV *sv) | |
1865 | { | |
1866 | register char *sbegin; | |
1867 | STRLEN len; | |
1868 | ||
1869 | if (SvPOK(sv)) { | |
1870 | sbegin = SvPVX(sv); | |
1871 | len = SvCUR(sv); | |
1872 | } | |
1873 | else if (SvPOKp(sv)) | |
1874 | sbegin = SvPV(sv, len); | |
1875 | else | |
1876 | return 1; /* Historic. Wrong? */ | |
1877 | return grok_number(sbegin, len, NULL); | |
1878 | } | |
25da4f38 IZ |
1879 | |
1880 | /* Actually, ISO C leaves conversion of UV to IV undefined, but | |
1881 | until proven guilty, assume that things are not that bad... */ | |
1882 | ||
645c22ef DM |
1883 | /* |
1884 | NV_PRESERVES_UV: | |
1885 | ||
1886 | As 64 bit platforms often have an NV that doesn't preserve all bits of | |
28e5dec8 JH |
1887 | an IV (an assumption perl has been based on to date) it becomes necessary |
1888 | to remove the assumption that the NV always carries enough precision to | |
1889 | recreate the IV whenever needed, and that the NV is the canonical form. | |
1890 | Instead, IV/UV and NV need to be given equal rights. So as to not lose | |
645c22ef | 1891 | precision as a side effect of conversion (which would lead to insanity |
28e5dec8 JH |
1892 | and the dragon(s) in t/op/numconvert.t getting very angry) the intent is |
1893 | 1) to distinguish between IV/UV/NV slots that have cached a valid | |
1894 | conversion where precision was lost and IV/UV/NV slots that have a | |
1895 | valid conversion which has lost no precision | |
645c22ef | 1896 | 2) to ensure that if a numeric conversion to one form is requested that |
28e5dec8 JH |
1897 | would lose precision, the precise conversion (or differently |
1898 | imprecise conversion) is also performed and cached, to prevent | |
1899 | requests for different numeric formats on the same SV causing | |
1900 | lossy conversion chains. (lossless conversion chains are perfectly | |
1901 | acceptable (still)) | |
1902 | ||
1903 | ||
1904 | flags are used: | |
1905 | SvIOKp is true if the IV slot contains a valid value | |
1906 | SvIOK is true only if the IV value is accurate (UV if SvIOK_UV true) | |
1907 | SvNOKp is true if the NV slot contains a valid value | |
1908 | SvNOK is true only if the NV value is accurate | |
1909 | ||
1910 | so | |
645c22ef | 1911 | while converting from PV to NV, check to see if converting that NV to an |
28e5dec8 JH |
1912 | IV(or UV) would lose accuracy over a direct conversion from PV to |
1913 | IV(or UV). If it would, cache both conversions, return NV, but mark | |
1914 | SV as IOK NOKp (ie not NOK). | |
1915 | ||
645c22ef | 1916 | While converting from PV to IV, check to see if converting that IV to an |
28e5dec8 JH |
1917 | NV would lose accuracy over a direct conversion from PV to NV. If it |
1918 | would, cache both conversions, flag similarly. | |
1919 | ||
1920 | Before, the SV value "3.2" could become NV=3.2 IV=3 NOK, IOK quite | |
1921 | correctly because if IV & NV were set NV *always* overruled. | |
645c22ef DM |
1922 | Now, "3.2" will become NV=3.2 IV=3 NOK, IOKp, because the flag's meaning |
1923 | changes - now IV and NV together means that the two are interchangeable: | |
28e5dec8 | 1924 | SvIVX == (IV) SvNVX && SvNVX == (NV) SvIVX; |
d460ef45 | 1925 | |
645c22ef DM |
1926 | The benefit of this is that operations such as pp_add know that if |
1927 | SvIOK is true for both left and right operands, then integer addition | |
1928 | can be used instead of floating point (for cases where the result won't | |
1929 | overflow). Before, floating point was always used, which could lead to | |
28e5dec8 JH |
1930 | loss of precision compared with integer addition. |
1931 | ||
1932 | * making IV and NV equal status should make maths accurate on 64 bit | |
1933 | platforms | |
1934 | * may speed up maths somewhat if pp_add and friends start to use | |
645c22ef | 1935 | integers when possible instead of fp. (Hopefully the overhead in |
28e5dec8 JH |
1936 | looking for SvIOK and checking for overflow will not outweigh the |
1937 | fp to integer speedup) | |
1938 | * will slow down integer operations (callers of SvIV) on "inaccurate" | |
1939 | values, as the change from SvIOK to SvIOKp will cause a call into | |
1940 | sv_2iv each time rather than a macro access direct to the IV slot | |
1941 | * should speed up number->string conversion on integers as IV is | |
645c22ef | 1942 | favoured when IV and NV are equally accurate |
28e5dec8 JH |
1943 | |
1944 | #################################################################### | |
645c22ef DM |
1945 | You had better be using SvIOK_notUV if you want an IV for arithmetic: |
1946 | SvIOK is true if (IV or UV), so you might be getting (IV)SvUV. | |
1947 | On the other hand, SvUOK is true iff UV. | |
28e5dec8 JH |
1948 | #################################################################### |
1949 | ||
645c22ef | 1950 | Your mileage will vary depending your CPU's relative fp to integer |
28e5dec8 JH |
1951 | performance ratio. |
1952 | */ | |
1953 | ||
1954 | #ifndef NV_PRESERVES_UV | |
645c22ef DM |
1955 | # define IS_NUMBER_UNDERFLOW_IV 1 |
1956 | # define IS_NUMBER_UNDERFLOW_UV 2 | |
1957 | # define IS_NUMBER_IV_AND_UV 2 | |
1958 | # define IS_NUMBER_OVERFLOW_IV 4 | |
1959 | # define IS_NUMBER_OVERFLOW_UV 5 | |
1960 | ||
1961 | /* sv_2iuv_non_preserve(): private routine for use by sv_2iv() and sv_2uv() */ | |
28e5dec8 JH |
1962 | |
1963 | /* For sv_2nv these three cases are "SvNOK and don't bother casting" */ | |
1964 | STATIC int | |
645c22ef | 1965 | S_sv_2iuv_non_preserve(pTHX_ register SV *sv, I32 numtype) |
28e5dec8 | 1966 | { |
1779d84d | 1967 | DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_2iuv_non '%s', IV=0x%"UVxf" NV=%"NVgf" inttype=%"UVXf"\n", SvPVX(sv), SvIVX(sv), SvNVX(sv), (UV)numtype)); |
28e5dec8 JH |
1968 | if (SvNVX(sv) < (NV)IV_MIN) { |
1969 | (void)SvIOKp_on(sv); | |
1970 | (void)SvNOK_on(sv); | |
1971 | SvIVX(sv) = IV_MIN; | |
1972 | return IS_NUMBER_UNDERFLOW_IV; | |
1973 | } | |
1974 | if (SvNVX(sv) > (NV)UV_MAX) { | |
1975 | (void)SvIOKp_on(sv); | |
1976 | (void)SvNOK_on(sv); | |
1977 | SvIsUV_on(sv); | |
1978 | SvUVX(sv) = UV_MAX; | |
1979 | return IS_NUMBER_OVERFLOW_UV; | |
1980 | } | |
c2988b20 NC |
1981 | (void)SvIOKp_on(sv); |
1982 | (void)SvNOK_on(sv); | |
1983 | /* Can't use strtol etc to convert this string. (See truth table in | |
1984 | sv_2iv */ | |
1985 | if (SvNVX(sv) <= (UV)IV_MAX) { | |
1986 | SvIVX(sv) = I_V(SvNVX(sv)); | |
1987 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { | |
1988 | SvIOK_on(sv); /* Integer is precise. NOK, IOK */ | |
1989 | } else { | |
1990 | /* Integer is imprecise. NOK, IOKp */ | |
1991 | } | |
1992 | return SvNVX(sv) < 0 ? IS_NUMBER_UNDERFLOW_UV : IS_NUMBER_IV_AND_UV; | |
1993 | } | |
1994 | SvIsUV_on(sv); | |
1995 | SvUVX(sv) = U_V(SvNVX(sv)); | |
1996 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
1997 | if (SvUVX(sv) == UV_MAX) { | |
1998 | /* As we know that NVs don't preserve UVs, UV_MAX cannot | |
1999 | possibly be preserved by NV. Hence, it must be overflow. | |
2000 | NOK, IOKp */ | |
2001 | return IS_NUMBER_OVERFLOW_UV; | |
2002 | } | |
2003 | SvIOK_on(sv); /* Integer is precise. NOK, UOK */ | |
2004 | } else { | |
2005 | /* Integer is imprecise. NOK, IOKp */ | |
28e5dec8 | 2006 | } |
c2988b20 | 2007 | return IS_NUMBER_OVERFLOW_IV; |
28e5dec8 | 2008 | } |
645c22ef DM |
2009 | #endif /* !NV_PRESERVES_UV*/ |
2010 | ||
2011 | /* | |
2012 | =for apidoc sv_2iv | |
2013 | ||
2014 | Return the integer value of an SV, doing any necessary string conversion, | |
2015 | magic etc. Normally used via the C<SvIV(sv)> and C<SvIVx(sv)> macros. | |
2016 | ||
2017 | =cut | |
2018 | */ | |
28e5dec8 | 2019 | |
a0d0e21e | 2020 | IV |
864dbfa3 | 2021 | Perl_sv_2iv(pTHX_ register SV *sv) |
79072805 LW |
2022 | { |
2023 | if (!sv) | |
2024 | return 0; | |
8990e307 | 2025 | if (SvGMAGICAL(sv)) { |
463ee0b2 LW |
2026 | mg_get(sv); |
2027 | if (SvIOKp(sv)) | |
2028 | return SvIVX(sv); | |
748a9306 | 2029 | if (SvNOKp(sv)) { |
25da4f38 | 2030 | return I_V(SvNVX(sv)); |
748a9306 | 2031 | } |
36477c24 | 2032 | if (SvPOKp(sv) && SvLEN(sv)) |
2033 | return asIV(sv); | |
3fe9a6f1 | 2034 | if (!SvROK(sv)) { |
d008e5eb | 2035 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2036 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
1d7c1841 | 2037 | report_uninit(); |
c6ee37c5 | 2038 | } |
36477c24 | 2039 | return 0; |
3fe9a6f1 | 2040 | } |
463ee0b2 | 2041 | } |
ed6116ce | 2042 | if (SvTHINKFIRST(sv)) { |
a0d0e21e | 2043 | if (SvROK(sv)) { |
a0d0e21e | 2044 | SV* tmpstr; |
1554e226 | 2045 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2046 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2047 | return SvIV(tmpstr); |
56431972 | 2048 | return PTR2IV(SvRV(sv)); |
a0d0e21e | 2049 | } |
765f542d NC |
2050 | if (SvIsCOW(sv)) { |
2051 | sv_force_normal_flags(sv, 0); | |
47deb5e7 | 2052 | } |
0336b60e | 2053 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2054 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 | 2055 | report_uninit(); |
ed6116ce LW |
2056 | return 0; |
2057 | } | |
79072805 | 2058 | } |
25da4f38 IZ |
2059 | if (SvIOKp(sv)) { |
2060 | if (SvIsUV(sv)) { | |
2061 | return (IV)(SvUVX(sv)); | |
2062 | } | |
2063 | else { | |
2064 | return SvIVX(sv); | |
2065 | } | |
463ee0b2 | 2066 | } |
748a9306 | 2067 | if (SvNOKp(sv)) { |
28e5dec8 JH |
2068 | /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv |
2069 | * without also getting a cached IV/UV from it at the same time | |
2070 | * (ie PV->NV conversion should detect loss of accuracy and cache | |
2071 | * IV or UV at same time to avoid this. NWC */ | |
25da4f38 IZ |
2072 | |
2073 | if (SvTYPE(sv) == SVt_NV) | |
2074 | sv_upgrade(sv, SVt_PVNV); | |
2075 | ||
28e5dec8 JH |
2076 | (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */ |
2077 | /* < not <= as for NV doesn't preserve UV, ((NV)IV_MAX+1) will almost | |
2078 | certainly cast into the IV range at IV_MAX, whereas the correct | |
2079 | answer is the UV IV_MAX +1. Hence < ensures that dodgy boundary | |
2080 | cases go to UV */ | |
2081 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
748a9306 | 2082 | SvIVX(sv) = I_V(SvNVX(sv)); |
28e5dec8 JH |
2083 | if (SvNVX(sv) == (NV) SvIVX(sv) |
2084 | #ifndef NV_PRESERVES_UV | |
2085 | && (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2086 | (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv))) | |
2087 | /* Don't flag it as "accurately an integer" if the number | |
2088 | came from a (by definition imprecise) NV operation, and | |
2089 | we're outside the range of NV integer precision */ | |
2090 | #endif | |
2091 | ) { | |
2092 | SvIOK_on(sv); /* Can this go wrong with rounding? NWC */ | |
2093 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2094 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (precise)\n", |
28e5dec8 JH |
2095 | PTR2UV(sv), |
2096 | SvNVX(sv), | |
2097 | SvIVX(sv))); | |
2098 | ||
2099 | } else { | |
2100 | /* IV not precise. No need to convert from PV, as NV | |
2101 | conversion would already have cached IV if it detected | |
2102 | that PV->IV would be better than PV->NV->IV | |
2103 | flags already correct - don't set public IOK. */ | |
2104 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2105 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (imprecise)\n", |
28e5dec8 JH |
2106 | PTR2UV(sv), |
2107 | SvNVX(sv), | |
2108 | SvIVX(sv))); | |
2109 | } | |
2110 | /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN, | |
2111 | but the cast (NV)IV_MIN rounds to a the value less (more | |
2112 | negative) than IV_MIN which happens to be equal to SvNVX ?? | |
2113 | Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and | |
2114 | NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and | |
2115 | (NV)UVX == NVX are both true, but the values differ. :-( | |
2116 | Hopefully for 2s complement IV_MIN is something like | |
2117 | 0x8000000000000000 which will be exact. NWC */ | |
d460ef45 | 2118 | } |
25da4f38 | 2119 | else { |
ff68c719 | 2120 | SvUVX(sv) = U_V(SvNVX(sv)); |
28e5dec8 JH |
2121 | if ( |
2122 | (SvNVX(sv) == (NV) SvUVX(sv)) | |
2123 | #ifndef NV_PRESERVES_UV | |
2124 | /* Make sure it's not 0xFFFFFFFFFFFFFFFF */ | |
2125 | /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */ | |
2126 | && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv)) | |
2127 | /* Don't flag it as "accurately an integer" if the number | |
2128 | came from a (by definition imprecise) NV operation, and | |
2129 | we're outside the range of NV integer precision */ | |
2130 | #endif | |
2131 | ) | |
2132 | SvIOK_on(sv); | |
25da4f38 IZ |
2133 | SvIsUV_on(sv); |
2134 | ret_iv_max: | |
1c846c1f | 2135 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
57def98f | 2136 | "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n", |
56431972 | 2137 | PTR2UV(sv), |
57def98f JH |
2138 | SvUVX(sv), |
2139 | SvUVX(sv))); | |
25da4f38 IZ |
2140 | return (IV)SvUVX(sv); |
2141 | } | |
748a9306 LW |
2142 | } |
2143 | else if (SvPOKp(sv) && SvLEN(sv)) { | |
c2988b20 NC |
2144 | UV value; |
2145 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
25da4f38 IZ |
2146 | /* We want to avoid a possible problem when we cache an IV which |
2147 | may be later translated to an NV, and the resulting NV is not | |
c2988b20 NC |
2148 | the same as the direct translation of the initial string |
2149 | (eg 123.456 can shortcut to the IV 123 with atol(), but we must | |
2150 | be careful to ensure that the value with the .456 is around if the | |
2151 | NV value is requested in the future). | |
1c846c1f | 2152 | |
25da4f38 IZ |
2153 | This means that if we cache such an IV, we need to cache the |
2154 | NV as well. Moreover, we trade speed for space, and do not | |
28e5dec8 | 2155 | cache the NV if we are sure it's not needed. |
25da4f38 | 2156 | */ |
16b7a9a4 | 2157 | |
c2988b20 NC |
2158 | /* SVt_PVNV is one higher than SVt_PVIV, hence this order */ |
2159 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2160 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2161 | /* It's definitely an integer, only upgrade to PVIV */ |
28e5dec8 JH |
2162 | if (SvTYPE(sv) < SVt_PVIV) |
2163 | sv_upgrade(sv, SVt_PVIV); | |
f7bbb42a | 2164 | (void)SvIOK_on(sv); |
c2988b20 NC |
2165 | } else if (SvTYPE(sv) < SVt_PVNV) |
2166 | sv_upgrade(sv, SVt_PVNV); | |
28e5dec8 | 2167 | |
c2988b20 NC |
2168 | /* If NV preserves UV then we only use the UV value if we know that |
2169 | we aren't going to call atof() below. If NVs don't preserve UVs | |
2170 | then the value returned may have more precision than atof() will | |
2171 | return, even though value isn't perfectly accurate. */ | |
2172 | if ((numtype & (IS_NUMBER_IN_UV | |
2173 | #ifdef NV_PRESERVES_UV | |
2174 | | IS_NUMBER_NOT_INT | |
2175 | #endif | |
2176 | )) == IS_NUMBER_IN_UV) { | |
2177 | /* This won't turn off the public IOK flag if it was set above */ | |
2178 | (void)SvIOKp_on(sv); | |
2179 | ||
2180 | if (!(numtype & IS_NUMBER_NEG)) { | |
2181 | /* positive */; | |
2182 | if (value <= (UV)IV_MAX) { | |
2183 | SvIVX(sv) = (IV)value; | |
2184 | } else { | |
2185 | SvUVX(sv) = value; | |
2186 | SvIsUV_on(sv); | |
2187 | } | |
2188 | } else { | |
2189 | /* 2s complement assumption */ | |
2190 | if (value <= (UV)IV_MIN) { | |
2191 | SvIVX(sv) = -(IV)value; | |
2192 | } else { | |
2193 | /* Too negative for an IV. This is a double upgrade, but | |
d1be9408 | 2194 | I'm assuming it will be rare. */ |
c2988b20 NC |
2195 | if (SvTYPE(sv) < SVt_PVNV) |
2196 | sv_upgrade(sv, SVt_PVNV); | |
2197 | SvNOK_on(sv); | |
2198 | SvIOK_off(sv); | |
2199 | SvIOKp_on(sv); | |
2200 | SvNVX(sv) = -(NV)value; | |
2201 | SvIVX(sv) = IV_MIN; | |
2202 | } | |
2203 | } | |
2204 | } | |
2205 | /* For !NV_PRESERVES_UV and IS_NUMBER_IN_UV and IS_NUMBER_NOT_INT we | |
2206 | will be in the previous block to set the IV slot, and the next | |
2207 | block to set the NV slot. So no else here. */ | |
2208 | ||
2209 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2210 | != IS_NUMBER_IN_UV) { | |
2211 | /* It wasn't an (integer that doesn't overflow the UV). */ | |
2212 | SvNVX(sv) = Atof(SvPVX(sv)); | |
28e5dec8 | 2213 | |
c2988b20 NC |
2214 | if (! numtype && ckWARN(WARN_NUMERIC)) |
2215 | not_a_number(sv); | |
28e5dec8 | 2216 | |
65202027 | 2217 | #if defined(USE_LONG_DOUBLE) |
c2988b20 NC |
2218 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%" PERL_PRIgldbl ")\n", |
2219 | PTR2UV(sv), SvNVX(sv))); | |
65202027 | 2220 | #else |
1779d84d | 2221 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"NVgf")\n", |
c2988b20 | 2222 | PTR2UV(sv), SvNVX(sv))); |
65202027 | 2223 | #endif |
28e5dec8 JH |
2224 | |
2225 | ||
2226 | #ifdef NV_PRESERVES_UV | |
c2988b20 NC |
2227 | (void)SvIOKp_on(sv); |
2228 | (void)SvNOK_on(sv); | |
2229 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
2230 | SvIVX(sv) = I_V(SvNVX(sv)); | |
2231 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { | |
2232 | SvIOK_on(sv); | |
28e5dec8 | 2233 | } else { |
c2988b20 NC |
2234 | /* Integer is imprecise. NOK, IOKp */ |
2235 | } | |
2236 | /* UV will not work better than IV */ | |
2237 | } else { | |
2238 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2239 | SvIsUV_on(sv); | |
2240 | /* Integer is inaccurate. NOK, IOKp, is UV */ | |
2241 | SvUVX(sv) = UV_MAX; | |
2242 | SvIsUV_on(sv); | |
2243 | } else { | |
2244 | SvUVX(sv) = U_V(SvNVX(sv)); | |
2245 | /* 0xFFFFFFFFFFFFFFFF not an issue in here */ | |
2246 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
2247 | SvIOK_on(sv); | |
28e5dec8 JH |
2248 | SvIsUV_on(sv); |
2249 | } else { | |
c2988b20 NC |
2250 | /* Integer is imprecise. NOK, IOKp, is UV */ |
2251 | SvIsUV_on(sv); | |
28e5dec8 | 2252 | } |
28e5dec8 | 2253 | } |
c2988b20 NC |
2254 | goto ret_iv_max; |
2255 | } | |
28e5dec8 | 2256 | #else /* NV_PRESERVES_UV */ |
c2988b20 NC |
2257 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2258 | == (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) { | |
2259 | /* The IV slot will have been set from value returned by | |
2260 | grok_number above. The NV slot has just been set using | |
2261 | Atof. */ | |
560b0c46 | 2262 | SvNOK_on(sv); |
c2988b20 NC |
2263 | assert (SvIOKp(sv)); |
2264 | } else { | |
2265 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2266 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { | |
2267 | /* Small enough to preserve all bits. */ | |
2268 | (void)SvIOKp_on(sv); | |
2269 | SvNOK_on(sv); | |
2270 | SvIVX(sv) = I_V(SvNVX(sv)); | |
2271 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) | |
2272 | SvIOK_on(sv); | |
2273 | /* Assumption: first non-preserved integer is < IV_MAX, | |
2274 | this NV is in the preserved range, therefore: */ | |
2275 | if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)) | |
2276 | < (UV)IV_MAX)) { | |
32fdb065 | 2277 | Perl_croak(aTHX_ "sv_2iv assumed (U_V(fabs((double)SvNVX(sv))) < (UV)IV_MAX) but SvNVX(sv)=%"NVgf" U_V is 0x%"UVxf", IV_MAX is 0x%"UVxf"\n", SvNVX(sv), U_V(SvNVX(sv)), (UV)IV_MAX); |
c2988b20 NC |
2278 | } |
2279 | } else { | |
2280 | /* IN_UV NOT_INT | |
2281 | 0 0 already failed to read UV. | |
2282 | 0 1 already failed to read UV. | |
2283 | 1 0 you won't get here in this case. IV/UV | |
2284 | slot set, public IOK, Atof() unneeded. | |
2285 | 1 1 already read UV. | |
2286 | so there's no point in sv_2iuv_non_preserve() attempting | |
2287 | to use atol, strtol, strtoul etc. */ | |
2288 | if (sv_2iuv_non_preserve (sv, numtype) | |
2289 | >= IS_NUMBER_OVERFLOW_IV) | |
2290 | goto ret_iv_max; | |
2291 | } | |
2292 | } | |
28e5dec8 | 2293 | #endif /* NV_PRESERVES_UV */ |
25da4f38 | 2294 | } |
28e5dec8 | 2295 | } else { |
599cee73 | 2296 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) |
1d7c1841 | 2297 | report_uninit(); |
25da4f38 IZ |
2298 | if (SvTYPE(sv) < SVt_IV) |
2299 | /* Typically the caller expects that sv_any is not NULL now. */ | |
2300 | sv_upgrade(sv, SVt_IV); | |
a0d0e21e | 2301 | return 0; |
79072805 | 2302 | } |
1d7c1841 GS |
2303 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n", |
2304 | PTR2UV(sv),SvIVX(sv))); | |
25da4f38 | 2305 | return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv); |
79072805 LW |
2306 | } |
2307 | ||
645c22ef DM |
2308 | /* |
2309 | =for apidoc sv_2uv | |
2310 | ||
2311 | Return the unsigned integer value of an SV, doing any necessary string | |
2312 | conversion, magic etc. Normally used via the C<SvUV(sv)> and C<SvUVx(sv)> | |
2313 | macros. | |
2314 | ||
2315 | =cut | |
2316 | */ | |
2317 | ||
ff68c719 | 2318 | UV |
864dbfa3 | 2319 | Perl_sv_2uv(pTHX_ register SV *sv) |
ff68c719 | 2320 | { |
2321 | if (!sv) | |
2322 | return 0; | |
2323 | if (SvGMAGICAL(sv)) { | |
2324 | mg_get(sv); | |
2325 | if (SvIOKp(sv)) | |
2326 | return SvUVX(sv); | |
2327 | if (SvNOKp(sv)) | |
2328 | return U_V(SvNVX(sv)); | |
36477c24 | 2329 | if (SvPOKp(sv) && SvLEN(sv)) |
2330 | return asUV(sv); | |
3fe9a6f1 | 2331 | if (!SvROK(sv)) { |
d008e5eb | 2332 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2333 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
1d7c1841 | 2334 | report_uninit(); |
c6ee37c5 | 2335 | } |
36477c24 | 2336 | return 0; |
3fe9a6f1 | 2337 | } |
ff68c719 | 2338 | } |
2339 | if (SvTHINKFIRST(sv)) { | |
2340 | if (SvROK(sv)) { | |
ff68c719 | 2341 | SV* tmpstr; |
1554e226 | 2342 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2343 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2344 | return SvUV(tmpstr); |
56431972 | 2345 | return PTR2UV(SvRV(sv)); |
ff68c719 | 2346 | } |
765f542d NC |
2347 | if (SvIsCOW(sv)) { |
2348 | sv_force_normal_flags(sv, 0); | |
8a818333 | 2349 | } |
0336b60e | 2350 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2351 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 | 2352 | report_uninit(); |
ff68c719 | 2353 | return 0; |
2354 | } | |
2355 | } | |
25da4f38 IZ |
2356 | if (SvIOKp(sv)) { |
2357 | if (SvIsUV(sv)) { | |
2358 | return SvUVX(sv); | |
2359 | } | |
2360 | else { | |
2361 | return (UV)SvIVX(sv); | |
2362 | } | |
ff68c719 | 2363 | } |
2364 | if (SvNOKp(sv)) { | |
28e5dec8 JH |
2365 | /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv |
2366 | * without also getting a cached IV/UV from it at the same time | |
2367 | * (ie PV->NV conversion should detect loss of accuracy and cache | |
2368 | * IV or UV at same time to avoid this. */ | |
2369 | /* IV-over-UV optimisation - choose to cache IV if possible */ | |
2370 | ||
25da4f38 IZ |
2371 | if (SvTYPE(sv) == SVt_NV) |
2372 | sv_upgrade(sv, SVt_PVNV); | |
28e5dec8 JH |
2373 | |
2374 | (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */ | |
2375 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
f7bbb42a | 2376 | SvIVX(sv) = I_V(SvNVX(sv)); |
28e5dec8 JH |
2377 | if (SvNVX(sv) == (NV) SvIVX(sv) |
2378 | #ifndef NV_PRESERVES_UV | |
2379 | && (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2380 | (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv))) | |
2381 | /* Don't flag it as "accurately an integer" if the number | |
2382 | came from a (by definition imprecise) NV operation, and | |
2383 | we're outside the range of NV integer precision */ | |
2384 | #endif | |
2385 | ) { | |
2386 | SvIOK_on(sv); /* Can this go wrong with rounding? NWC */ | |
2387 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2388 | "0x%"UVxf" uv(%"NVgf" => %"IVdf") (precise)\n", |
28e5dec8 JH |
2389 | PTR2UV(sv), |
2390 | SvNVX(sv), | |
2391 | SvIVX(sv))); | |
2392 | ||
2393 | } else { | |
2394 | /* IV not precise. No need to convert from PV, as NV | |
2395 | conversion would already have cached IV if it detected | |
2396 | that PV->IV would be better than PV->NV->IV | |
2397 | flags already correct - don't set public IOK. */ | |
2398 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2399 | "0x%"UVxf" uv(%"NVgf" => %"IVdf") (imprecise)\n", |
28e5dec8 JH |
2400 | PTR2UV(sv), |
2401 | SvNVX(sv), | |
2402 | SvIVX(sv))); | |
2403 | } | |
2404 | /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN, | |
2405 | but the cast (NV)IV_MIN rounds to a the value less (more | |
2406 | negative) than IV_MIN which happens to be equal to SvNVX ?? | |
2407 | Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and | |
2408 | NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and | |
2409 | (NV)UVX == NVX are both true, but the values differ. :-( | |
2410 | Hopefully for 2s complement IV_MIN is something like | |
2411 | 0x8000000000000000 which will be exact. NWC */ | |
d460ef45 | 2412 | } |
28e5dec8 JH |
2413 | else { |
2414 | SvUVX(sv) = U_V(SvNVX(sv)); | |
2415 | if ( | |
2416 | (SvNVX(sv) == (NV) SvUVX(sv)) | |
2417 | #ifndef NV_PRESERVES_UV | |
2418 | /* Make sure it's not 0xFFFFFFFFFFFFFFFF */ | |
2419 | /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */ | |
2420 | && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv)) | |
2421 | /* Don't flag it as "accurately an integer" if the number | |
2422 | came from a (by definition imprecise) NV operation, and | |
2423 | we're outside the range of NV integer precision */ | |
2424 | #endif | |
2425 | ) | |
2426 | SvIOK_on(sv); | |
2427 | SvIsUV_on(sv); | |
1c846c1f | 2428 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
28e5dec8 | 2429 | "0x%"UVxf" 2uv(%"UVuf" => %"IVdf") (as unsigned)\n", |
57def98f | 2430 | PTR2UV(sv), |
28e5dec8 JH |
2431 | SvUVX(sv), |
2432 | SvUVX(sv))); | |
25da4f38 | 2433 | } |
ff68c719 | 2434 | } |
2435 | else if (SvPOKp(sv) && SvLEN(sv)) { | |
c2988b20 NC |
2436 | UV value; |
2437 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
25da4f38 IZ |
2438 | |
2439 | /* We want to avoid a possible problem when we cache a UV which | |
2440 | may be later translated to an NV, and the resulting NV is not | |
2441 | the translation of the initial data. | |
1c846c1f | 2442 | |
25da4f38 IZ |
2443 | This means that if we cache such a UV, we need to cache the |
2444 | NV as well. Moreover, we trade speed for space, and do not | |
2445 | cache the NV if not needed. | |
2446 | */ | |
16b7a9a4 | 2447 | |
c2988b20 NC |
2448 | /* SVt_PVNV is one higher than SVt_PVIV, hence this order */ |
2449 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2450 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2451 | /* It's definitely an integer, only upgrade to PVIV */ |
28e5dec8 | 2452 | if (SvTYPE(sv) < SVt_PVIV) |
f7bbb42a JH |
2453 | sv_upgrade(sv, SVt_PVIV); |
2454 | (void)SvIOK_on(sv); | |
c2988b20 NC |
2455 | } else if (SvTYPE(sv) < SVt_PVNV) |
2456 | sv_upgrade(sv, SVt_PVNV); | |
d460ef45 | 2457 | |
c2988b20 NC |
2458 | /* If NV preserves UV then we only use the UV value if we know that |
2459 | we aren't going to call atof() below. If NVs don't preserve UVs | |
2460 | then the value returned may have more precision than atof() will | |
2461 | return, even though it isn't accurate. */ | |
2462 | if ((numtype & (IS_NUMBER_IN_UV | |
2463 | #ifdef NV_PRESERVES_UV | |
2464 | | IS_NUMBER_NOT_INT | |
2465 | #endif | |
2466 | )) == IS_NUMBER_IN_UV) { | |
2467 | /* This won't turn off the public IOK flag if it was set above */ | |
2468 | (void)SvIOKp_on(sv); | |
2469 | ||
2470 | if (!(numtype & IS_NUMBER_NEG)) { | |
2471 | /* positive */; | |
2472 | if (value <= (UV)IV_MAX) { | |
2473 | SvIVX(sv) = (IV)value; | |
28e5dec8 JH |
2474 | } else { |
2475 | /* it didn't overflow, and it was positive. */ | |
c2988b20 | 2476 | SvUVX(sv) = value; |
28e5dec8 JH |
2477 | SvIsUV_on(sv); |
2478 | } | |
c2988b20 NC |
2479 | } else { |
2480 | /* 2s complement assumption */ | |
2481 | if (value <= (UV)IV_MIN) { | |
2482 | SvIVX(sv) = -(IV)value; | |
2483 | } else { | |
2484 | /* Too negative for an IV. This is a double upgrade, but | |
d1be9408 | 2485 | I'm assuming it will be rare. */ |
c2988b20 NC |
2486 | if (SvTYPE(sv) < SVt_PVNV) |
2487 | sv_upgrade(sv, SVt_PVNV); | |
2488 | SvNOK_on(sv); | |
2489 | SvIOK_off(sv); | |
2490 | SvIOKp_on(sv); | |
2491 | SvNVX(sv) = -(NV)value; | |
2492 | SvIVX(sv) = IV_MIN; | |
2493 | } | |
2494 | } | |
2495 | } | |
2496 | ||
2497 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2498 | != IS_NUMBER_IN_UV) { | |
2499 | /* It wasn't an integer, or it overflowed the UV. */ | |
2500 | SvNVX(sv) = Atof(SvPVX(sv)); | |
28e5dec8 | 2501 | |
c2988b20 | 2502 | if (! numtype && ckWARN(WARN_NUMERIC)) |
28e5dec8 JH |
2503 | not_a_number(sv); |
2504 | ||
2505 | #if defined(USE_LONG_DOUBLE) | |
c2988b20 NC |
2506 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%" PERL_PRIgldbl ")\n", |
2507 | PTR2UV(sv), SvNVX(sv))); | |
28e5dec8 | 2508 | #else |
1779d84d | 2509 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"NVgf")\n", |
c2988b20 | 2510 | PTR2UV(sv), SvNVX(sv))); |
28e5dec8 JH |
2511 | #endif |
2512 | ||
2513 | #ifdef NV_PRESERVES_UV | |
c2988b20 NC |
2514 | (void)SvIOKp_on(sv); |
2515 | (void)SvNOK_on(sv); | |
2516 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
2517 | SvIVX(sv) = I_V(SvNVX(sv)); | |
2518 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { | |
2519 | SvIOK_on(sv); | |
2520 | } else { | |
2521 | /* Integer is imprecise. NOK, IOKp */ | |
2522 | } | |
2523 | /* UV will not work better than IV */ | |
2524 | } else { | |
2525 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2526 | SvIsUV_on(sv); | |
2527 | /* Integer is inaccurate. NOK, IOKp, is UV */ | |
2528 | SvUVX(sv) = UV_MAX; | |
2529 | SvIsUV_on(sv); | |
2530 | } else { | |
2531 | SvUVX(sv) = U_V(SvNVX(sv)); | |
2532 | /* 0xFFFFFFFFFFFFFFFF not an issue in here, NVs | |
2533 | NV preservse UV so can do correct comparison. */ | |
2534 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
2535 | SvIOK_on(sv); | |
2536 | SvIsUV_on(sv); | |
2537 | } else { | |
2538 | /* Integer is imprecise. NOK, IOKp, is UV */ | |
2539 | SvIsUV_on(sv); | |
2540 | } | |
2541 | } | |
2542 | } | |
28e5dec8 | 2543 | #else /* NV_PRESERVES_UV */ |
c2988b20 NC |
2544 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2545 | == (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) { | |
2546 | /* The UV slot will have been set from value returned by | |
2547 | grok_number above. The NV slot has just been set using | |
2548 | Atof. */ | |
560b0c46 | 2549 | SvNOK_on(sv); |
c2988b20 NC |
2550 | assert (SvIOKp(sv)); |
2551 | } else { | |
2552 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2553 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { | |
2554 | /* Small enough to preserve all bits. */ | |
2555 | (void)SvIOKp_on(sv); | |
2556 | SvNOK_on(sv); | |
2557 | SvIVX(sv) = I_V(SvNVX(sv)); | |
2558 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) | |
2559 | SvIOK_on(sv); | |
2560 | /* Assumption: first non-preserved integer is < IV_MAX, | |
2561 | this NV is in the preserved range, therefore: */ | |
2562 | if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)) | |
2563 | < (UV)IV_MAX)) { | |
32fdb065 | 2564 | Perl_croak(aTHX_ "sv_2uv assumed (U_V(fabs((double)SvNVX(sv))) < (UV)IV_MAX) but SvNVX(sv)=%"NVgf" U_V is 0x%"UVxf", IV_MAX is 0x%"UVxf"\n", SvNVX(sv), U_V(SvNVX(sv)), (UV)IV_MAX); |
c2988b20 NC |
2565 | } |
2566 | } else | |
2567 | sv_2iuv_non_preserve (sv, numtype); | |
2568 | } | |
28e5dec8 | 2569 | #endif /* NV_PRESERVES_UV */ |
f7bbb42a | 2570 | } |
ff68c719 | 2571 | } |
2572 | else { | |
d008e5eb | 2573 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2574 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
1d7c1841 | 2575 | report_uninit(); |
c6ee37c5 | 2576 | } |
25da4f38 IZ |
2577 | if (SvTYPE(sv) < SVt_IV) |
2578 | /* Typically the caller expects that sv_any is not NULL now. */ | |
2579 | sv_upgrade(sv, SVt_IV); | |
ff68c719 | 2580 | return 0; |
2581 | } | |
25da4f38 | 2582 | |
1d7c1841 GS |
2583 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n", |
2584 | PTR2UV(sv),SvUVX(sv))); | |
25da4f38 | 2585 | return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv); |
ff68c719 | 2586 | } |
2587 | ||
645c22ef DM |
2588 | /* |
2589 | =for apidoc sv_2nv | |
2590 | ||
2591 | Return the num value of an SV, doing any necessary string or integer | |
2592 | conversion, magic etc. Normally used via the C<SvNV(sv)> and C<SvNVx(sv)> | |
2593 | macros. | |
2594 | ||
2595 | =cut | |
2596 | */ | |
2597 | ||
65202027 | 2598 | NV |
864dbfa3 | 2599 | Perl_sv_2nv(pTHX_ register SV *sv) |
79072805 LW |
2600 | { |
2601 | if (!sv) | |
2602 | return 0.0; | |
8990e307 | 2603 | if (SvGMAGICAL(sv)) { |
463ee0b2 LW |
2604 | mg_get(sv); |
2605 | if (SvNOKp(sv)) | |
2606 | return SvNVX(sv); | |
a0d0e21e | 2607 | if (SvPOKp(sv) && SvLEN(sv)) { |
c2988b20 NC |
2608 | if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && |
2609 | !grok_number(SvPVX(sv), SvCUR(sv), NULL)) | |
a0d0e21e | 2610 | not_a_number(sv); |
097ee67d | 2611 | return Atof(SvPVX(sv)); |
a0d0e21e | 2612 | } |
25da4f38 | 2613 | if (SvIOKp(sv)) { |
1c846c1f | 2614 | if (SvIsUV(sv)) |
65202027 | 2615 | return (NV)SvUVX(sv); |
25da4f38 | 2616 | else |
65202027 | 2617 | return (NV)SvIVX(sv); |
25da4f38 | 2618 | } |
16d20bd9 | 2619 | if (!SvROK(sv)) { |
d008e5eb | 2620 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2621 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
1d7c1841 | 2622 | report_uninit(); |
c6ee37c5 | 2623 | } |
16d20bd9 AD |
2624 | return 0; |
2625 | } | |
463ee0b2 | 2626 | } |
ed6116ce | 2627 | if (SvTHINKFIRST(sv)) { |
a0d0e21e | 2628 | if (SvROK(sv)) { |
a0d0e21e | 2629 | SV* tmpstr; |
1554e226 | 2630 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2631 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2632 | return SvNV(tmpstr); |
56431972 | 2633 | return PTR2NV(SvRV(sv)); |
a0d0e21e | 2634 | } |
765f542d NC |
2635 | if (SvIsCOW(sv)) { |
2636 | sv_force_normal_flags(sv, 0); | |
8a818333 | 2637 | } |
0336b60e | 2638 | if (SvREADONLY(sv) && !SvOK(sv)) { |
599cee73 | 2639 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 | 2640 | report_uninit(); |
ed6116ce LW |
2641 | return 0.0; |
2642 | } | |
79072805 LW |
2643 | } |
2644 | if (SvTYPE(sv) < SVt_NV) { | |
463ee0b2 LW |
2645 | if (SvTYPE(sv) == SVt_IV) |
2646 | sv_upgrade(sv, SVt_PVNV); | |
2647 | else | |
2648 | sv_upgrade(sv, SVt_NV); | |
906f284f | 2649 | #ifdef USE_LONG_DOUBLE |
097ee67d | 2650 | DEBUG_c({ |
f93f4e46 | 2651 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
2652 | PerlIO_printf(Perl_debug_log, |
2653 | "0x%"UVxf" num(%" PERL_PRIgldbl ")\n", | |
2654 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
2655 | RESTORE_NUMERIC_LOCAL(); |
2656 | }); | |
65202027 | 2657 | #else |
572bbb43 | 2658 | DEBUG_c({ |
f93f4e46 | 2659 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 2660 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%"NVgf")\n", |
1d7c1841 | 2661 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
2662 | RESTORE_NUMERIC_LOCAL(); |
2663 | }); | |
572bbb43 | 2664 | #endif |
79072805 LW |
2665 | } |
2666 | else if (SvTYPE(sv) < SVt_PVNV) | |
2667 | sv_upgrade(sv, SVt_PVNV); | |
59d8ce62 NC |
2668 | if (SvNOKp(sv)) { |
2669 | return SvNVX(sv); | |
61604483 | 2670 | } |
59d8ce62 | 2671 | if (SvIOKp(sv)) { |
65202027 | 2672 | SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv); |
28e5dec8 JH |
2673 | #ifdef NV_PRESERVES_UV |
2674 | SvNOK_on(sv); | |
2675 | #else | |
2676 | /* Only set the public NV OK flag if this NV preserves the IV */ | |
2677 | /* Check it's not 0xFFFFFFFFFFFFFFFF */ | |
2678 | if (SvIsUV(sv) ? ((SvUVX(sv) != UV_MAX)&&(SvUVX(sv) == U_V(SvNVX(sv)))) | |
2679 | : (SvIVX(sv) == I_V(SvNVX(sv)))) | |
2680 | SvNOK_on(sv); | |
2681 | else | |
2682 | SvNOKp_on(sv); | |
2683 | #endif | |
93a17b20 | 2684 | } |
748a9306 | 2685 | else if (SvPOKp(sv) && SvLEN(sv)) { |
c2988b20 NC |
2686 | UV value; |
2687 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
2688 | if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !numtype) | |
a0d0e21e | 2689 | not_a_number(sv); |
28e5dec8 | 2690 | #ifdef NV_PRESERVES_UV |
c2988b20 NC |
2691 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2692 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2693 | /* It's definitely an integer */ |
c2988b20 NC |
2694 | SvNVX(sv) = (numtype & IS_NUMBER_NEG) ? -(NV)value : (NV)value; |
2695 | } else | |
2696 | SvNVX(sv) = Atof(SvPVX(sv)); | |
28e5dec8 JH |
2697 | SvNOK_on(sv); |
2698 | #else | |
c2988b20 | 2699 | SvNVX(sv) = Atof(SvPVX(sv)); |
28e5dec8 JH |
2700 | /* Only set the public NV OK flag if this NV preserves the value in |
2701 | the PV at least as well as an IV/UV would. | |
2702 | Not sure how to do this 100% reliably. */ | |
2703 | /* if that shift count is out of range then Configure's test is | |
2704 | wonky. We shouldn't be in here with NV_PRESERVES_UV_BITS == | |
2705 | UV_BITS */ | |
2706 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
c2988b20 | 2707 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { |
28e5dec8 | 2708 | SvNOK_on(sv); /* Definitely small enough to preserve all bits */ |
c2988b20 NC |
2709 | } else if (!(numtype & IS_NUMBER_IN_UV)) { |
2710 | /* Can't use strtol etc to convert this string, so don't try. | |
2711 | sv_2iv and sv_2uv will use the NV to convert, not the PV. */ | |
2712 | SvNOK_on(sv); | |
2713 | } else { | |
2714 | /* value has been set. It may not be precise. */ | |
2715 | if ((numtype & IS_NUMBER_NEG) && (value > (UV)IV_MIN)) { | |
2716 | /* 2s complement assumption for (UV)IV_MIN */ | |
2717 | SvNOK_on(sv); /* Integer is too negative. */ | |
2718 | } else { | |
2719 | SvNOKp_on(sv); | |
2720 | SvIOKp_on(sv); | |
6fa402ec | 2721 | |
c2988b20 NC |
2722 | if (numtype & IS_NUMBER_NEG) { |
2723 | SvIVX(sv) = -(IV)value; | |
2724 | } else if (value <= (UV)IV_MAX) { | |
2725 | SvIVX(sv) = (IV)value; | |
2726 | } else { | |
2727 | SvUVX(sv) = value; | |
2728 | SvIsUV_on(sv); | |
2729 | } | |
2730 | ||
2731 | if (numtype & IS_NUMBER_NOT_INT) { | |
2732 | /* I believe that even if the original PV had decimals, | |
2733 | they are lost beyond the limit of the FP precision. | |
2734 | However, neither is canonical, so both only get p | |
2735 | flags. NWC, 2000/11/25 */ | |
2736 | /* Both already have p flags, so do nothing */ | |
2737 | } else { | |
2738 | NV nv = SvNVX(sv); | |
2739 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
2740 | if (SvIVX(sv) == I_V(nv)) { | |
2741 | SvNOK_on(sv); | |
2742 | SvIOK_on(sv); | |
2743 | } else { | |
2744 | SvIOK_on(sv); | |
2745 | /* It had no "." so it must be integer. */ | |
2746 | } | |
2747 | } else { | |
2748 | /* between IV_MAX and NV(UV_MAX). | |
2749 | Could be slightly > UV_MAX */ | |
6fa402ec | 2750 | |
c2988b20 NC |
2751 | if (numtype & IS_NUMBER_NOT_INT) { |
2752 | /* UV and NV both imprecise. */ | |
2753 | } else { | |
2754 | UV nv_as_uv = U_V(nv); | |
2755 | ||
2756 | if (value == nv_as_uv && SvUVX(sv) != UV_MAX) { | |
2757 | SvNOK_on(sv); | |
2758 | SvIOK_on(sv); | |
2759 | } else { | |
2760 | SvIOK_on(sv); | |
2761 | } | |
2762 | } | |
2763 | } | |
2764 | } | |
2765 | } | |
2766 | } | |
28e5dec8 | 2767 | #endif /* NV_PRESERVES_UV */ |
93a17b20 | 2768 | } |
79072805 | 2769 | else { |
599cee73 | 2770 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) |
1d7c1841 | 2771 | report_uninit(); |
25da4f38 IZ |
2772 | if (SvTYPE(sv) < SVt_NV) |
2773 | /* Typically the caller expects that sv_any is not NULL now. */ | |
28e5dec8 JH |
2774 | /* XXX Ilya implies that this is a bug in callers that assume this |
2775 | and ideally should be fixed. */ | |
25da4f38 | 2776 | sv_upgrade(sv, SVt_NV); |
a0d0e21e | 2777 | return 0.0; |
79072805 | 2778 | } |
572bbb43 | 2779 | #if defined(USE_LONG_DOUBLE) |
097ee67d | 2780 | DEBUG_c({ |
f93f4e46 | 2781 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
2782 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n", |
2783 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
2784 | RESTORE_NUMERIC_LOCAL(); |
2785 | }); | |
65202027 | 2786 | #else |
572bbb43 | 2787 | DEBUG_c({ |
f93f4e46 | 2788 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 2789 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%"NVgf")\n", |
1d7c1841 | 2790 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
2791 | RESTORE_NUMERIC_LOCAL(); |
2792 | }); | |
572bbb43 | 2793 | #endif |
463ee0b2 | 2794 | return SvNVX(sv); |
79072805 LW |
2795 | } |
2796 | ||
645c22ef DM |
2797 | /* asIV(): extract an integer from the string value of an SV. |
2798 | * Caller must validate PVX */ | |
2799 | ||
76e3520e | 2800 | STATIC IV |
cea2e8a9 | 2801 | S_asIV(pTHX_ SV *sv) |
36477c24 | 2802 | { |
c2988b20 NC |
2803 | UV value; |
2804 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
2805 | ||
2806 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2807 | == IS_NUMBER_IN_UV) { | |
645c22ef | 2808 | /* It's definitely an integer */ |
c2988b20 NC |
2809 | if (numtype & IS_NUMBER_NEG) { |
2810 | if (value < (UV)IV_MIN) | |
2811 | return -(IV)value; | |
2812 | } else { | |
2813 | if (value < (UV)IV_MAX) | |
2814 | return (IV)value; | |
2815 | } | |
2816 | } | |
d008e5eb | 2817 | if (!numtype) { |
d008e5eb GS |
2818 | if (ckWARN(WARN_NUMERIC)) |
2819 | not_a_number(sv); | |
2820 | } | |
c2988b20 | 2821 | return I_V(Atof(SvPVX(sv))); |
36477c24 | 2822 | } |
2823 | ||
645c22ef DM |
2824 | /* asUV(): extract an unsigned integer from the string value of an SV |
2825 | * Caller must validate PVX */ | |
2826 | ||
76e3520e | 2827 | STATIC UV |
cea2e8a9 | 2828 | S_asUV(pTHX_ SV *sv) |
36477c24 | 2829 | { |
c2988b20 NC |
2830 | UV value; |
2831 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
36477c24 | 2832 | |
c2988b20 NC |
2833 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2834 | == IS_NUMBER_IN_UV) { | |
645c22ef | 2835 | /* It's definitely an integer */ |
6fa402ec | 2836 | if (!(numtype & IS_NUMBER_NEG)) |
c2988b20 NC |
2837 | return value; |
2838 | } | |
d008e5eb | 2839 | if (!numtype) { |
d008e5eb GS |
2840 | if (ckWARN(WARN_NUMERIC)) |
2841 | not_a_number(sv); | |
2842 | } | |
097ee67d | 2843 | return U_V(Atof(SvPVX(sv))); |
36477c24 | 2844 | } |
2845 | ||
645c22ef DM |
2846 | /* |
2847 | =for apidoc sv_2pv_nolen | |
2848 | ||
2849 | Like C<sv_2pv()>, but doesn't return the length too. You should usually | |
2850 | use the macro wrapper C<SvPV_nolen(sv)> instead. | |
2851 | =cut | |
2852 | */ | |
2853 | ||
79072805 | 2854 | char * |
864dbfa3 | 2855 | Perl_sv_2pv_nolen(pTHX_ register SV *sv) |
1fa8b10d JD |
2856 | { |
2857 | STRLEN n_a; | |
2858 | return sv_2pv(sv, &n_a); | |
2859 | } | |
2860 | ||
645c22ef DM |
2861 | /* uiv_2buf(): private routine for use by sv_2pv_flags(): print an IV or |
2862 | * UV as a string towards the end of buf, and return pointers to start and | |
2863 | * end of it. | |
2864 | * | |
2865 | * We assume that buf is at least TYPE_CHARS(UV) long. | |
2866 | */ | |
2867 | ||
864dbfa3 | 2868 | static char * |
25da4f38 IZ |
2869 | uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob) |
2870 | { | |
25da4f38 IZ |
2871 | char *ptr = buf + TYPE_CHARS(UV); |
2872 | char *ebuf = ptr; | |
2873 | int sign; | |
25da4f38 IZ |
2874 | |
2875 | if (is_uv) | |
2876 | sign = 0; | |
2877 | else if (iv >= 0) { | |
2878 | uv = iv; | |
2879 | sign = 0; | |
2880 | } else { | |
2881 | uv = -iv; | |
2882 | sign = 1; | |
2883 | } | |
2884 | do { | |
eb160463 | 2885 | *--ptr = '0' + (char)(uv % 10); |
25da4f38 IZ |
2886 | } while (uv /= 10); |
2887 | if (sign) | |
2888 | *--ptr = '-'; | |
2889 | *peob = ebuf; | |
2890 | return ptr; | |
2891 | } | |
2892 | ||
09540bc3 JH |
2893 | /* sv_2pv() is now a macro using Perl_sv_2pv_flags(); |
2894 | * this function provided for binary compatibility only | |
2895 | */ | |
2896 | ||
2897 | char * | |
2898 | Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp) | |
2899 | { | |
2900 | return sv_2pv_flags(sv, lp, SV_GMAGIC); | |
2901 | } | |
2902 | ||
645c22ef DM |
2903 | /* |
2904 | =for apidoc sv_2pv_flags | |
2905 | ||
ff276b08 | 2906 | Returns a pointer to the string value of an SV, and sets *lp to its length. |
645c22ef DM |
2907 | If flags includes SV_GMAGIC, does an mg_get() first. Coerces sv to a string |
2908 | if necessary. | |
2909 | Normally invoked via the C<SvPV_flags> macro. C<sv_2pv()> and C<sv_2pv_nomg> | |
2910 | usually end up here too. | |
2911 | ||
2912 | =cut | |
2913 | */ | |
2914 | ||
8d6d96c1 HS |
2915 | char * |
2916 | Perl_sv_2pv_flags(pTHX_ register SV *sv, STRLEN *lp, I32 flags) | |
2917 | { | |
79072805 LW |
2918 | register char *s; |
2919 | int olderrno; | |
cb50f42d | 2920 | SV *tsv, *origsv; |
25da4f38 IZ |
2921 | char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */ |
2922 | char *tmpbuf = tbuf; | |
79072805 | 2923 | |
463ee0b2 LW |
2924 | if (!sv) { |
2925 | *lp = 0; | |
2926 | return ""; | |
2927 | } | |
8990e307 | 2928 | if (SvGMAGICAL(sv)) { |
8d6d96c1 HS |
2929 | if (flags & SV_GMAGIC) |
2930 | mg_get(sv); | |
463ee0b2 LW |
2931 | if (SvPOKp(sv)) { |
2932 | *lp = SvCUR(sv); | |
2933 | return SvPVX(sv); | |
2934 | } | |
cf2093f6 | 2935 | if (SvIOKp(sv)) { |
1c846c1f | 2936 | if (SvIsUV(sv)) |
57def98f | 2937 | (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv)); |
cf2093f6 | 2938 | else |
57def98f | 2939 | (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv)); |
46fc3d4c | 2940 | tsv = Nullsv; |
a0d0e21e | 2941 | goto tokensave; |
463ee0b2 LW |
2942 | } |
2943 | if (SvNOKp(sv)) { | |
2d4389e4 | 2944 | Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf); |
46fc3d4c | 2945 | tsv = Nullsv; |
a0d0e21e | 2946 | goto tokensave; |
463ee0b2 | 2947 | } |
16d20bd9 | 2948 | if (!SvROK(sv)) { |
d008e5eb | 2949 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2950 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
1d7c1841 | 2951 | report_uninit(); |
c6ee37c5 | 2952 | } |
16d20bd9 AD |
2953 | *lp = 0; |
2954 | return ""; | |
2955 | } | |
463ee0b2 | 2956 | } |
ed6116ce LW |
2957 | if (SvTHINKFIRST(sv)) { |
2958 | if (SvROK(sv)) { | |
a0d0e21e | 2959 | SV* tmpstr; |
1554e226 | 2960 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) && |
b4b9a328 | 2961 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) { |
446eaa42 YST |
2962 | char *pv = SvPV(tmpstr, *lp); |
2963 | if (SvUTF8(tmpstr)) | |
2964 | SvUTF8_on(sv); | |
2965 | else | |
2966 | SvUTF8_off(sv); | |
2967 | return pv; | |
2968 | } | |
cb50f42d | 2969 | origsv = sv; |
ed6116ce LW |
2970 | sv = (SV*)SvRV(sv); |
2971 | if (!sv) | |
2972 | s = "NULLREF"; | |
2973 | else { | |
f9277f47 IZ |
2974 | MAGIC *mg; |
2975 | ||
ed6116ce | 2976 | switch (SvTYPE(sv)) { |
f9277f47 IZ |
2977 | case SVt_PVMG: |
2978 | if ( ((SvFLAGS(sv) & | |
1c846c1f | 2979 | (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG)) |
faf82a0b | 2980 | == (SVs_OBJECT|SVs_SMG)) |
14befaf4 | 2981 | && (mg = mg_find(sv, PERL_MAGIC_qr))) { |
2cd61cdb | 2982 | regexp *re = (regexp *)mg->mg_obj; |
1bd3ad17 | 2983 | |
2cd61cdb | 2984 | if (!mg->mg_ptr) { |
8782bef2 GB |
2985 | char *fptr = "msix"; |
2986 | char reflags[6]; | |
2987 | char ch; | |
2988 | int left = 0; | |
2989 | int right = 4; | |
ff385a1b | 2990 | char need_newline = 0; |
eb160463 | 2991 | U16 reganch = (U16)((re->reganch & PMf_COMPILETIME) >> 12); |
8782bef2 | 2992 | |
155aba94 | 2993 | while((ch = *fptr++)) { |
8782bef2 GB |
2994 | if(reganch & 1) { |
2995 | reflags[left++] = ch; | |
2996 | } | |
2997 | else { | |
2998 | reflags[right--] = ch; | |
2999 | } | |
3000 | reganch >>= 1; | |
3001 | } | |
3002 | if(left != 4) { | |
3003 | reflags[left] = '-'; | |
3004 | left = 5; | |
3005 | } | |
3006 | ||
3007 | mg->mg_len = re->prelen + 4 + left; | |
ff385a1b JF |
3008 | /* |
3009 | * If /x was used, we have to worry about a regex | |
3010 | * ending with a comment later being embedded | |
3011 | * within another regex. If so, we don't want this | |
3012 | * regex's "commentization" to leak out to the | |
3013 | * right part of the enclosing regex, we must cap | |
3014 | * it with a newline. | |
3015 | * | |
3016 | * So, if /x was used, we scan backwards from the | |
3017 | * end of the regex. If we find a '#' before we | |
3018 | * find a newline, we need to add a newline | |
3019 | * ourself. If we find a '\n' first (or if we | |
3020 | * don't find '#' or '\n'), we don't need to add | |
3021 | * anything. -jfriedl | |
3022 | */ | |
3023 | if (PMf_EXTENDED & re->reganch) | |
3024 | { | |
3025 | char *endptr = re->precomp + re->prelen; | |
3026 | while (endptr >= re->precomp) | |
3027 | { | |
3028 | char c = *(endptr--); | |
3029 | if (c == '\n') | |
3030 | break; /* don't need another */ | |
3031 | if (c == '#') { | |
3032 | /* we end while in a comment, so we | |
3033 | need a newline */ | |
3034 | mg->mg_len++; /* save space for it */ | |
3035 | need_newline = 1; /* note to add it */ | |
ab01544f | 3036 | break; |
ff385a1b JF |
3037 | } |
3038 | } | |
3039 | } | |
3040 | ||
8782bef2 GB |
3041 | New(616, mg->mg_ptr, mg->mg_len + 1 + left, char); |
3042 | Copy("(?", mg->mg_ptr, 2, char); | |
3043 | Copy(reflags, mg->mg_ptr+2, left, char); | |
3044 | Copy(":", mg->mg_ptr+left+2, 1, char); | |
3045 | Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char); | |
ff385a1b JF |
3046 | if (need_newline) |
3047 | mg->mg_ptr[mg->mg_len - 2] = '\n'; | |
1bd3ad17 IZ |
3048 | mg->mg_ptr[mg->mg_len - 1] = ')'; |
3049 | mg->mg_ptr[mg->mg_len] = 0; | |
3050 | } | |
3280af22 | 3051 | PL_reginterp_cnt += re->program[0].next_off; |
cb50f42d YST |
3052 | |
3053 | if (re->reganch & ROPT_UTF8) | |
3054 | SvUTF8_on(origsv); | |
3055 | else | |
3056 | SvUTF8_off(origsv); | |
1bd3ad17 IZ |
3057 | *lp = mg->mg_len; |
3058 | return mg->mg_ptr; | |
f9277f47 IZ |
3059 | } |
3060 | /* Fall through */ | |
ed6116ce LW |
3061 | case SVt_NULL: |
3062 | case SVt_IV: | |
3063 | case SVt_NV: | |
3064 | case SVt_RV: | |
3065 | case SVt_PV: | |
3066 | case SVt_PVIV: | |
3067 | case SVt_PVNV: | |
81689caa HS |
3068 | case SVt_PVBM: if (SvROK(sv)) |
3069 | s = "REF"; | |
3070 | else | |
3071 | s = "SCALAR"; break; | |
dd28f7bb | 3072 | case SVt_PVLV: s = SvROK(sv) ? "REF":"LVALUE"; break; |
ed6116ce LW |
3073 | case SVt_PVAV: s = "ARRAY"; break; |
3074 | case SVt_PVHV: s = "HASH"; break; | |
3075 | case SVt_PVCV: s = "CODE"; break; | |
3076 | case SVt_PVGV: s = "GLOB"; break; | |
1d2dff63 | 3077 | case SVt_PVFM: s = "FORMAT"; break; |
36477c24 | 3078 | case SVt_PVIO: s = "IO"; break; |
ed6116ce LW |
3079 | default: s = "UNKNOWN"; break; |
3080 | } | |
46fc3d4c | 3081 | tsv = NEWSV(0,0); |
de11ba31 | 3082 | if (SvOBJECT(sv)) |
e27ad1f2 AV |
3083 | if (HvNAME(SvSTASH(sv))) |
3084 | Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s); | |
3085 | else | |
3086 | Perl_sv_setpvf(aTHX_ tsv, "__ANON__=%s", s); | |
ed6116ce | 3087 | else |
46fc3d4c | 3088 | sv_setpv(tsv, s); |
57def98f | 3089 | Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv)); |
a0d0e21e | 3090 | goto tokensaveref; |
463ee0b2 | 3091 | } |
ed6116ce LW |
3092 | *lp = strlen(s); |
3093 | return s; | |
79072805 | 3094 | } |
0336b60e | 3095 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 3096 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 | 3097 | report_uninit(); |
ed6116ce LW |
3098 | *lp = 0; |
3099 | return ""; | |
79072805 | 3100 | } |
79072805 | 3101 | } |
28e5dec8 JH |
3102 | if (SvIOK(sv) || ((SvIOKp(sv) && !SvNOKp(sv)))) { |
3103 | /* I'm assuming that if both IV and NV are equally valid then | |
3104 | converting the IV is going to be more efficient */ | |
3105 | U32 isIOK = SvIOK(sv); | |
3106 | U32 isUIOK = SvIsUV(sv); | |
3107 | char buf[TYPE_CHARS(UV)]; | |
3108 | char *ebuf, *ptr; | |
3109 | ||
3110 | if (SvTYPE(sv) < SVt_PVIV) | |
3111 | sv_upgrade(sv, SVt_PVIV); | |
3112 | if (isUIOK) | |
3113 | ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf); | |
3114 | else | |
3115 | ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf); | |
eb160463 | 3116 | SvGROW(sv, (STRLEN)(ebuf - ptr + 1)); /* inlined from sv_setpvn */ |
28e5dec8 JH |
3117 | Move(ptr,SvPVX(sv),ebuf - ptr,char); |
3118 | SvCUR_set(sv, ebuf - ptr); | |
3119 | s = SvEND(sv); | |
3120 | *s = '\0'; | |
3121 | if (isIOK) | |
3122 | SvIOK_on(sv); | |
3123 | else | |
3124 | SvIOKp_on(sv); | |
3125 | if (isUIOK) | |
3126 | SvIsUV_on(sv); | |
3127 | } | |
3128 | else if (SvNOKp(sv)) { | |
79072805 LW |
3129 | if (SvTYPE(sv) < SVt_PVNV) |
3130 | sv_upgrade(sv, SVt_PVNV); | |
1c846c1f | 3131 | /* The +20 is pure guesswork. Configure test needed. --jhi */ |
59155cc0 | 3132 | SvGROW(sv, NV_DIG + 20); |
463ee0b2 | 3133 | s = SvPVX(sv); |
79072805 | 3134 | olderrno = errno; /* some Xenix systems wipe out errno here */ |
79072805 | 3135 | #ifdef apollo |
463ee0b2 | 3136 | if (SvNVX(sv) == 0.0) |
79072805 LW |
3137 | (void)strcpy(s,"0"); |
3138 | else | |
3139 | #endif /*apollo*/ | |
bbce6d69 | 3140 | { |
2d4389e4 | 3141 | Gconvert(SvNVX(sv), NV_DIG, 0, s); |
bbce6d69 | 3142 | } |
79072805 | 3143 | errno = olderrno; |
a0d0e21e LW |
3144 | #ifdef FIXNEGATIVEZERO |
3145 | if (*s == '-' && s[1] == '0' && !s[2]) | |
3146 | strcpy(s,"0"); | |
3147 | #endif | |
79072805 LW |
3148 | while (*s) s++; |
3149 | #ifdef hcx | |
3150 | if (s[-1] == '.') | |
46fc3d4c | 3151 | *--s = '\0'; |
79072805 LW |
3152 | #endif |
3153 | } | |
79072805 | 3154 | else { |
0336b60e IZ |
3155 | if (ckWARN(WARN_UNINITIALIZED) |
3156 | && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) | |
1d7c1841 | 3157 | report_uninit(); |
a0d0e21e | 3158 | *lp = 0; |
25da4f38 IZ |
3159 | if (SvTYPE(sv) < SVt_PV) |
3160 | /* Typically the caller expects that sv_any is not NULL now. */ | |
3161 | sv_upgrade(sv, SVt_PV); | |
a0d0e21e | 3162 | return ""; |
79072805 | 3163 | } |
463ee0b2 LW |
3164 | *lp = s - SvPVX(sv); |
3165 | SvCUR_set(sv, *lp); | |
79072805 | 3166 | SvPOK_on(sv); |
1d7c1841 GS |
3167 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
3168 | PTR2UV(sv),SvPVX(sv))); | |
463ee0b2 | 3169 | return SvPVX(sv); |
a0d0e21e LW |
3170 | |
3171 | tokensave: | |
3172 | if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */ | |
3173 | /* Sneaky stuff here */ | |
3174 | ||
3175 | tokensaveref: | |
46fc3d4c | 3176 | if (!tsv) |
96827780 | 3177 | tsv = newSVpv(tmpbuf, 0); |
46fc3d4c | 3178 | sv_2mortal(tsv); |
3179 | *lp = SvCUR(tsv); | |
3180 | return SvPVX(tsv); | |
a0d0e21e LW |
3181 | } |
3182 | else { | |
3183 | STRLEN len; | |
46fc3d4c | 3184 | char *t; |
3185 | ||
3186 | if (tsv) { | |
3187 | sv_2mortal(tsv); | |
3188 | t = SvPVX(tsv); | |
3189 | len = SvCUR(tsv); | |
3190 | } | |
3191 | else { | |
96827780 MB |
3192 | t = tmpbuf; |
3193 | len = strlen(tmpbuf); | |
46fc3d4c | 3194 | } |
a0d0e21e | 3195 | #ifdef FIXNEGATIVEZERO |
46fc3d4c | 3196 | if (len == 2 && t[0] == '-' && t[1] == '0') { |
3197 | t = "0"; | |
3198 | len = 1; | |
3199 | } | |
a0d0e21e LW |
3200 | #endif |
3201 | (void)SvUPGRADE(sv, SVt_PV); | |
46fc3d4c | 3202 | *lp = len; |
a0d0e21e LW |
3203 | s = SvGROW(sv, len + 1); |
3204 | SvCUR_set(sv, len); | |
46fc3d4c | 3205 | (void)strcpy(s, t); |
6bf554b4 | 3206 | SvPOKp_on(sv); |
a0d0e21e LW |
3207 | return s; |
3208 | } | |
463ee0b2 LW |
3209 | } |
3210 | ||
645c22ef | 3211 | /* |
6050d10e JP |
3212 | =for apidoc sv_copypv |
3213 | ||
3214 | Copies a stringified representation of the source SV into the | |
3215 | destination SV. Automatically performs any necessary mg_get and | |
54f0641b | 3216 | coercion of numeric values into strings. Guaranteed to preserve |
6050d10e | 3217 | UTF-8 flag even from overloaded objects. Similar in nature to |
54f0641b NIS |
3218 | sv_2pv[_flags] but operates directly on an SV instead of just the |
3219 | string. Mostly uses sv_2pv_flags to do its work, except when that | |
6050d10e JP |
3220 | would lose the UTF-8'ness of the PV. |
3221 | ||
3222 | =cut | |
3223 | */ | |
3224 | ||
3225 | void | |
3226 | Perl_sv_copypv(pTHX_ SV *dsv, register SV *ssv) | |
3227 | { | |
446eaa42 YST |
3228 | STRLEN len; |
3229 | char *s; | |
3230 | s = SvPV(ssv,len); | |
cb50f42d | 3231 | sv_setpvn(dsv,s,len); |
446eaa42 | 3232 | if (SvUTF8(ssv)) |
cb50f42d | 3233 | SvUTF8_on(dsv); |
446eaa42 | 3234 | else |
cb50f42d | 3235 | SvUTF8_off(dsv); |
6050d10e JP |
3236 | } |
3237 | ||
3238 | /* | |
645c22ef DM |
3239 | =for apidoc sv_2pvbyte_nolen |
3240 | ||
3241 | Return a pointer to the byte-encoded representation of the SV. | |
3242 | May cause the SV to be downgraded from UTF8 as a side-effect. | |
3243 | ||
3244 | Usually accessed via the C<SvPVbyte_nolen> macro. | |
3245 | ||
3246 | =cut | |
3247 | */ | |
3248 | ||
7340a771 GS |
3249 | char * |
3250 | Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv) | |
3251 | { | |
560a288e GS |
3252 | STRLEN n_a; |
3253 | return sv_2pvbyte(sv, &n_a); | |
7340a771 GS |
3254 | } |
3255 | ||
645c22ef DM |
3256 | /* |
3257 | =for apidoc sv_2pvbyte | |
3258 | ||
3259 | Return a pointer to the byte-encoded representation of the SV, and set *lp | |
3260 | to its length. May cause the SV to be downgraded from UTF8 as a | |
3261 | side-effect. | |
3262 | ||
3263 | Usually accessed via the C<SvPVbyte> macro. | |
3264 | ||
3265 | =cut | |
3266 | */ | |
3267 | ||
7340a771 GS |
3268 | char * |
3269 | Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp) | |
3270 | { | |
0875d2fe NIS |
3271 | sv_utf8_downgrade(sv,0); |
3272 | return SvPV(sv,*lp); | |
7340a771 GS |
3273 | } |
3274 | ||
645c22ef DM |
3275 | /* |
3276 | =for apidoc sv_2pvutf8_nolen | |
3277 | ||
3278 | Return a pointer to the UTF8-encoded representation of the SV. | |
3279 | May cause the SV to be upgraded to UTF8 as a side-effect. | |
3280 | ||
3281 | Usually accessed via the C<SvPVutf8_nolen> macro. | |
3282 | ||
3283 | =cut | |
3284 | */ | |
3285 | ||
7340a771 GS |
3286 | char * |
3287 | Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv) | |
3288 | { | |
560a288e GS |
3289 | STRLEN n_a; |
3290 | return sv_2pvutf8(sv, &n_a); | |
7340a771 GS |
3291 | } |
3292 | ||
645c22ef DM |
3293 | /* |
3294 | =for apidoc sv_2pvutf8 | |
3295 | ||
3296 | Return a pointer to the UTF8-encoded representation of the SV, and set *lp | |
3297 | to its length. May cause the SV to be upgraded to UTF8 as a side-effect. | |
3298 | ||
3299 | Usually accessed via the C<SvPVutf8> macro. | |
3300 | ||
3301 | =cut | |
3302 | */ | |
3303 | ||
7340a771 GS |
3304 | char * |
3305 | Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp) | |
3306 | { | |
560a288e | 3307 | sv_utf8_upgrade(sv); |
7d59b7e4 | 3308 | return SvPV(sv,*lp); |
7340a771 | 3309 | } |
1c846c1f | 3310 | |
645c22ef DM |
3311 | /* |
3312 | =for apidoc sv_2bool | |
3313 | ||
3314 | This function is only called on magical items, and is only used by | |
8cf8f3d1 | 3315 | sv_true() or its macro equivalent. |
645c22ef DM |
3316 | |
3317 | =cut | |
3318 | */ | |
3319 | ||
463ee0b2 | 3320 | bool |
864dbfa3 | 3321 | Perl_sv_2bool(pTHX_ register SV *sv) |
463ee0b2 | 3322 | { |
8990e307 | 3323 | if (SvGMAGICAL(sv)) |
463ee0b2 LW |
3324 | mg_get(sv); |
3325 | ||
a0d0e21e LW |
3326 | if (!SvOK(sv)) |
3327 | return 0; | |
3328 | if (SvROK(sv)) { | |
a0d0e21e | 3329 | SV* tmpsv; |
1554e226 | 3330 | if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) && |
9e3013b1 | 3331 | (!SvROK(tmpsv) || (SvRV(tmpsv) != SvRV(sv)))) |
8a31060d | 3332 | return (bool)SvTRUE(tmpsv); |
a0d0e21e LW |
3333 | return SvRV(sv) != 0; |
3334 | } | |
463ee0b2 | 3335 | if (SvPOKp(sv)) { |
11343788 MB |
3336 | register XPV* Xpvtmp; |
3337 | if ((Xpvtmp = (XPV*)SvANY(sv)) && | |
3338 | (*Xpvtmp->xpv_pv > '0' || | |
3339 | Xpvtmp->xpv_cur > 1 || | |
3340 | (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0'))) | |
463ee0b2 LW |
3341 | return 1; |
3342 | else | |
3343 | return 0; | |
3344 | } | |
3345 | else { | |
3346 | if (SvIOKp(sv)) | |
3347 | return SvIVX(sv) != 0; | |
3348 | else { | |
3349 | if (SvNOKp(sv)) | |
3350 | return SvNVX(sv) != 0.0; | |
3351 | else | |
3352 | return FALSE; | |
3353 | } | |
3354 | } | |
79072805 LW |
3355 | } |
3356 | ||
09540bc3 JH |
3357 | /* sv_utf8_upgrade() is now a macro using sv_utf8_upgrade_flags(); |
3358 | * this function provided for binary compatibility only | |
3359 | */ | |
3360 | ||
3361 | ||
3362 | STRLEN | |
3363 | Perl_sv_utf8_upgrade(pTHX_ register SV *sv) | |
3364 | { | |
3365 | return sv_utf8_upgrade_flags(sv, SV_GMAGIC); | |
3366 | } | |
3367 | ||
c461cf8f JH |
3368 | /* |
3369 | =for apidoc sv_utf8_upgrade | |
3370 | ||
3371 | Convert the PV of an SV to its UTF8-encoded form. | |
645c22ef | 3372 | Forces the SV to string form if it is not already. |
4411f3b6 NIS |
3373 | Always sets the SvUTF8 flag to avoid future validity checks even |
3374 | if all the bytes have hibit clear. | |
c461cf8f | 3375 | |
13a6c0e0 JH |
3376 | This is not as a general purpose byte encoding to Unicode interface: |
3377 | use the Encode extension for that. | |
3378 | ||
8d6d96c1 HS |
3379 | =for apidoc sv_utf8_upgrade_flags |
3380 | ||
3381 | Convert the PV of an SV to its UTF8-encoded form. | |
645c22ef | 3382 | Forces the SV to string form if it is not already. |
8d6d96c1 HS |
3383 | Always sets the SvUTF8 flag to avoid future validity checks even |
3384 | if all the bytes have hibit clear. If C<flags> has C<SV_GMAGIC> bit set, | |
3385 | will C<mg_get> on C<sv> if appropriate, else not. C<sv_utf8_upgrade> and | |
3386 | C<sv_utf8_upgrade_nomg> are implemented in terms of this function. | |
3387 | ||
13a6c0e0 JH |
3388 | This is not as a general purpose byte encoding to Unicode interface: |
3389 | use the Encode extension for that. | |
3390 | ||
8d6d96c1 HS |
3391 | =cut |
3392 | */ | |
3393 | ||
3394 | STRLEN | |
3395 | Perl_sv_utf8_upgrade_flags(pTHX_ register SV *sv, I32 flags) | |
3396 | { | |
db42d148 | 3397 | U8 *s, *t, *e; |
511c2ff0 | 3398 | int hibit = 0; |
560a288e | 3399 | |
4411f3b6 NIS |
3400 | if (!sv) |
3401 | return 0; | |
3402 | ||
e0e62c2a NIS |
3403 | if (!SvPOK(sv)) { |
3404 | STRLEN len = 0; | |
8d6d96c1 | 3405 | (void) sv_2pv_flags(sv,&len, flags); |
e0e62c2a NIS |
3406 | if (!SvPOK(sv)) |
3407 | return len; | |
3408 | } | |
4411f3b6 NIS |
3409 | |
3410 | if (SvUTF8(sv)) | |
3411 | return SvCUR(sv); | |
560a288e | 3412 | |
765f542d NC |
3413 | if (SvIsCOW(sv)) { |
3414 | sv_force_normal_flags(sv, 0); | |
db42d148 NIS |
3415 | } |
3416 | ||
88632417 | 3417 | if (PL_encoding && !(flags & SV_UTF8_NO_ENCODING)) |
799ef3cb | 3418 | sv_recode_to_utf8(sv, PL_encoding); |
9f4817db | 3419 | else { /* Assume Latin-1/EBCDIC */ |
0a378802 JH |
3420 | /* This function could be much more efficient if we |
3421 | * had a FLAG in SVs to signal if there are any hibit | |
3422 | * chars in the PV. Given that there isn't such a flag | |
3423 | * make the loop as fast as possible. */ | |
3424 | s = (U8 *) SvPVX(sv); | |
3425 | e = (U8 *) SvEND(sv); | |
3426 | t = s; | |
3427 | while (t < e) { | |
3428 | U8 ch = *t++; | |
3429 | if ((hibit = !NATIVE_IS_INVARIANT(ch))) | |
3430 | break; | |
3431 | } | |
3432 | if (hibit) { | |
3433 | STRLEN len; | |
ecdeb87c | 3434 | |
0a378802 JH |
3435 | len = SvCUR(sv) + 1; /* Plus the \0 */ |
3436 | SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len); | |
3437 | SvCUR(sv) = len - 1; | |
3438 | if (SvLEN(sv) != 0) | |
3439 | Safefree(s); /* No longer using what was there before. */ | |
3440 | SvLEN(sv) = len; /* No longer know the real size. */ | |
3441 | } | |
9f4817db JH |
3442 | /* Mark as UTF-8 even if no hibit - saves scanning loop */ |
3443 | SvUTF8_on(sv); | |
560a288e | 3444 | } |
4411f3b6 | 3445 | return SvCUR(sv); |
560a288e GS |
3446 | } |
3447 | ||
c461cf8f JH |
3448 | /* |
3449 | =for apidoc sv_utf8_downgrade | |
3450 | ||
3451 | Attempt to convert the PV of an SV from UTF8-encoded to byte encoding. | |
3452 | This may not be possible if the PV contains non-byte encoding characters; | |
3453 | if this is the case, either returns false or, if C<fail_ok> is not | |
3454 | true, croaks. | |
3455 | ||
13a6c0e0 JH |
3456 | This is not as a general purpose Unicode to byte encoding interface: |
3457 | use the Encode extension for that. | |
3458 | ||
c461cf8f JH |
3459 | =cut |
3460 | */ | |
3461 | ||
560a288e GS |
3462 | bool |
3463 | Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok) | |
3464 | { | |
3465 | if (SvPOK(sv) && SvUTF8(sv)) { | |
fa301091 | 3466 | if (SvCUR(sv)) { |
03cfe0ae | 3467 | U8 *s; |
652088fc | 3468 | STRLEN len; |
fa301091 | 3469 | |
765f542d NC |
3470 | if (SvIsCOW(sv)) { |
3471 | sv_force_normal_flags(sv, 0); | |
3472 | } | |
03cfe0ae NIS |
3473 | s = (U8 *) SvPV(sv, len); |
3474 | if (!utf8_to_bytes(s, &len)) { | |
fa301091 JH |
3475 | if (fail_ok) |
3476 | return FALSE; | |
3477 | else { | |
3478 | if (PL_op) | |
3479 | Perl_croak(aTHX_ "Wide character in %s", | |
53e06cf0 | 3480 | OP_DESC(PL_op)); |
fa301091 JH |
3481 | else |
3482 | Perl_croak(aTHX_ "Wide character"); | |
3483 | } | |
4b3603a4 | 3484 | } |
fa301091 | 3485 | SvCUR(sv) = len; |
67e989fb | 3486 | } |
560a288e | 3487 | } |
ffebcc3e | 3488 | SvUTF8_off(sv); |
560a288e GS |
3489 | return TRUE; |
3490 | } | |
3491 | ||
c461cf8f JH |
3492 | /* |
3493 | =for apidoc sv_utf8_encode | |
3494 | ||
3495 | Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8> | |
4411f3b6 NIS |
3496 | flag so that it looks like octets again. Used as a building block |
3497 | for encode_utf8 in Encode.xs | |
c461cf8f JH |
3498 | |
3499 | =cut | |
3500 | */ | |
3501 | ||
560a288e GS |
3502 | void |
3503 | Perl_sv_utf8_encode(pTHX_ register SV *sv) | |
3504 | { | |
4411f3b6 | 3505 | (void) sv_utf8_upgrade(sv); |
560a288e GS |
3506 | SvUTF8_off(sv); |
3507 | } | |
3508 | ||
4411f3b6 NIS |
3509 | /* |
3510 | =for apidoc sv_utf8_decode | |
3511 | ||
3512 | Convert the octets in the PV from UTF-8 to chars. Scan for validity and then | |
645c22ef | 3513 | turn off SvUTF8 if needed so that we see characters. Used as a building block |
4411f3b6 NIS |
3514 | for decode_utf8 in Encode.xs |
3515 | ||
3516 | =cut | |
3517 | */ | |
3518 | ||
560a288e GS |
3519 | bool |
3520 | Perl_sv_utf8_decode(pTHX_ register SV *sv) | |
3521 | { | |
3522 | if (SvPOK(sv)) { | |
63cd0674 NIS |
3523 | U8 *c; |
3524 | U8 *e; | |
9cbac4c7 | 3525 | |
645c22ef DM |
3526 | /* The octets may have got themselves encoded - get them back as |
3527 | * bytes | |
3528 | */ | |
3529 | if (!sv_utf8_downgrade(sv, TRUE)) | |
560a288e GS |
3530 | return FALSE; |
3531 | ||
3532 | /* it is actually just a matter of turning the utf8 flag on, but | |
3533 | * we want to make sure everything inside is valid utf8 first. | |
3534 | */ | |
63cd0674 NIS |
3535 | c = (U8 *) SvPVX(sv); |
3536 | if (!is_utf8_string(c, SvCUR(sv)+1)) | |
67e989fb | 3537 | return FALSE; |
63cd0674 | 3538 | e = (U8 *) SvEND(sv); |
511c2ff0 | 3539 | while (c < e) { |
c4d5f83a NIS |
3540 | U8 ch = *c++; |
3541 | if (!UTF8_IS_INVARIANT(ch)) { | |
67e989fb JH |
3542 | SvUTF8_on(sv); |
3543 | break; | |
3544 | } | |
560a288e | 3545 | } |
560a288e GS |
3546 | } |
3547 | return TRUE; | |
3548 | } | |
3549 | ||
09540bc3 JH |
3550 | /* sv_setsv() is now a macro using Perl_sv_setsv_flags(); |
3551 | * this function provided for binary compatibility only | |
3552 | */ | |
3553 | ||
3554 | void | |
3555 | Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr) | |
3556 | { | |
3557 | sv_setsv_flags(dstr, sstr, SV_GMAGIC); | |
3558 | } | |
3559 | ||
954c1994 GS |
3560 | /* |
3561 | =for apidoc sv_setsv | |
3562 | ||
645c22ef DM |
3563 | Copies the contents of the source SV C<ssv> into the destination SV |
3564 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
3565 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
3566 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
3567 | content of the destination. | |
3568 | ||
3569 | You probably want to use one of the assortment of wrappers, such as | |
3570 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
3571 | C<SvSetMagicSV_nosteal>. | |
3572 | ||
8d6d96c1 HS |
3573 | =for apidoc sv_setsv_flags |
3574 | ||
645c22ef DM |
3575 | Copies the contents of the source SV C<ssv> into the destination SV |
3576 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
3577 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
3578 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
3579 | content of the destination. | |
3580 | If the C<flags> parameter has the C<SV_GMAGIC> bit set, will C<mg_get> on | |
3581 | C<ssv> if appropriate, else not. C<sv_setsv> and C<sv_setsv_nomg> are | |
3582 | implemented in terms of this function. | |
3583 | ||
3584 | You probably want to use one of the assortment of wrappers, such as | |
3585 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
3586 | C<SvSetMagicSV_nosteal>. | |
3587 | ||
3588 | This is the primary function for copying scalars, and most other | |
3589 | copy-ish functions and macros use this underneath. | |
8d6d96c1 HS |
3590 | |
3591 | =cut | |
3592 | */ | |
3593 | ||
3594 | void | |
3595 | Perl_sv_setsv_flags(pTHX_ SV *dstr, register SV *sstr, I32 flags) | |
3596 | { | |
8990e307 LW |
3597 | register U32 sflags; |
3598 | register int dtype; | |
3599 | register int stype; | |
463ee0b2 | 3600 | |
79072805 LW |
3601 | if (sstr == dstr) |
3602 | return; | |
765f542d | 3603 | SV_CHECK_THINKFIRST_COW_DROP(dstr); |
79072805 | 3604 | if (!sstr) |
3280af22 | 3605 | sstr = &PL_sv_undef; |
8990e307 LW |
3606 | stype = SvTYPE(sstr); |
3607 | dtype = SvTYPE(dstr); | |
79072805 | 3608 | |
a0d0e21e | 3609 | SvAMAGIC_off(dstr); |
ece467f9 JP |
3610 | if ( SvVOK(dstr) ) |
3611 | { | |
3612 | /* need to nuke the magic */ | |
3613 | mg_free(dstr); | |
3614 | SvRMAGICAL_off(dstr); | |
3615 | } | |
9e7bc3e8 | 3616 | |
463ee0b2 | 3617 | /* There's a lot of redundancy below but we're going for speed here */ |
79072805 | 3618 | |
8990e307 | 3619 | switch (stype) { |
79072805 | 3620 | case SVt_NULL: |
aece5585 | 3621 | undef_sstr: |
20408e3c GS |
3622 | if (dtype != SVt_PVGV) { |
3623 | (void)SvOK_off(dstr); | |
3624 | return; | |
3625 | } | |
3626 | break; | |
463ee0b2 | 3627 | case SVt_IV: |
aece5585 GA |
3628 | if (SvIOK(sstr)) { |
3629 | switch (dtype) { | |
3630 | case SVt_NULL: | |
8990e307 | 3631 | sv_upgrade(dstr, SVt_IV); |
aece5585 GA |
3632 | break; |
3633 | case SVt_NV: | |
8990e307 | 3634 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 GA |
3635 | break; |
3636 | case SVt_RV: | |
3637 | case SVt_PV: | |
a0d0e21e | 3638 | sv_upgrade(dstr, SVt_PVIV); |
aece5585 GA |
3639 | break; |
3640 | } | |
3641 | (void)SvIOK_only(dstr); | |
3642 | SvIVX(dstr) = SvIVX(sstr); | |
25da4f38 IZ |
3643 | if (SvIsUV(sstr)) |
3644 | SvIsUV_on(dstr); | |
27c9684d AP |
3645 | if (SvTAINTED(sstr)) |
3646 | SvTAINT(dstr); | |
aece5585 | 3647 | return; |
8990e307 | 3648 | } |
aece5585 GA |
3649 | goto undef_sstr; |
3650 | ||
463ee0b2 | 3651 | case SVt_NV: |
aece5585 GA |
3652 | if (SvNOK(sstr)) { |
3653 | switch (dtype) { | |
3654 | case SVt_NULL: | |
3655 | case SVt_IV: | |
8990e307 | 3656 | sv_upgrade(dstr, SVt_NV); |
aece5585 GA |
3657 | break; |
3658 | case SVt_RV: | |
3659 | case SVt_PV: | |
3660 | case SVt_PVIV: | |
a0d0e21e | 3661 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 GA |
3662 | break; |
3663 | } | |
3664 | SvNVX(dstr) = SvNVX(sstr); | |
3665 | (void)SvNOK_only(dstr); | |
27c9684d AP |
3666 | if (SvTAINTED(sstr)) |
3667 | SvTAINT(dstr); | |
aece5585 | 3668 | return; |
8990e307 | 3669 | } |
aece5585 GA |
3670 | goto undef_sstr; |
3671 | ||
ed6116ce | 3672 | case SVt_RV: |
8990e307 | 3673 | if (dtype < SVt_RV) |
ed6116ce | 3674 | sv_upgrade(dstr, SVt_RV); |
c07a80fd | 3675 | else if (dtype == SVt_PVGV && |
3676 | SvTYPE(SvRV(sstr)) == SVt_PVGV) { | |
3677 | sstr = SvRV(sstr); | |
a5f75d66 | 3678 | if (sstr == dstr) { |
1d7c1841 GS |
3679 | if (GvIMPORTED(dstr) != GVf_IMPORTED |
3680 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
3681 | { | |
a5f75d66 | 3682 | GvIMPORTED_on(dstr); |
1d7c1841 | 3683 | } |
a5f75d66 AD |
3684 | GvMULTI_on(dstr); |
3685 | return; | |
3686 | } | |
c07a80fd | 3687 | goto glob_assign; |
3688 | } | |
ed6116ce | 3689 | break; |
fc36a67e | 3690 | case SVt_PVFM: |
d89fc664 NC |
3691 | #ifdef PERL_COPY_ON_WRITE |
3692 | if ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS) { | |
3693 | if (dtype < SVt_PVIV) | |
3694 | sv_upgrade(dstr, SVt_PVIV); | |
3695 | break; | |
3696 | } | |
3697 | /* Fall through */ | |
3698 | #endif | |
3699 | case SVt_PV: | |
8990e307 | 3700 | if (dtype < SVt_PV) |
463ee0b2 | 3701 | sv_upgrade(dstr, SVt_PV); |
463ee0b2 LW |
3702 | break; |
3703 | case SVt_PVIV: | |
8990e307 | 3704 | if (dtype < SVt_PVIV) |
463ee0b2 | 3705 | sv_upgrade(dstr, SVt_PVIV); |
463ee0b2 LW |
3706 | break; |
3707 | case SVt_PVNV: | |
8990e307 | 3708 | if (dtype < SVt_PVNV) |
463ee0b2 | 3709 | sv_upgrade(dstr, SVt_PVNV); |
463ee0b2 | 3710 | break; |
4633a7c4 LW |
3711 | case SVt_PVAV: |
3712 | case SVt_PVHV: | |
3713 | case SVt_PVCV: | |
4633a7c4 | 3714 | case SVt_PVIO: |
533c011a | 3715 | if (PL_op) |
cea2e8a9 | 3716 | Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0), |
53e06cf0 | 3717 | OP_NAME(PL_op)); |
4633a7c4 | 3718 | else |
cea2e8a9 | 3719 | Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0)); |
4633a7c4 LW |
3720 | break; |
3721 | ||
79072805 | 3722 | case SVt_PVGV: |
8990e307 | 3723 | if (dtype <= SVt_PVGV) { |
c07a80fd | 3724 | glob_assign: |
a5f75d66 | 3725 | if (dtype != SVt_PVGV) { |
a0d0e21e LW |
3726 | char *name = GvNAME(sstr); |
3727 | STRLEN len = GvNAMELEN(sstr); | |
463ee0b2 | 3728 | sv_upgrade(dstr, SVt_PVGV); |
14befaf4 | 3729 | sv_magic(dstr, dstr, PERL_MAGIC_glob, Nullch, 0); |
85aff577 | 3730 | GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr)); |
a0d0e21e LW |
3731 | GvNAME(dstr) = savepvn(name, len); |
3732 | GvNAMELEN(dstr) = len; | |
3733 | SvFAKE_on(dstr); /* can coerce to non-glob */ | |
3734 | } | |
7bac28a0 | 3735 | /* ahem, death to those who redefine active sort subs */ |
3280af22 NIS |
3736 | else if (PL_curstackinfo->si_type == PERLSI_SORT |
3737 | && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr))) | |
cea2e8a9 | 3738 | Perl_croak(aTHX_ "Can't redefine active sort subroutine %s", |
7bac28a0 | 3739 | GvNAME(dstr)); |
5bd07a3d | 3740 | |
7fb37951 AMS |
3741 | #ifdef GV_UNIQUE_CHECK |
3742 | if (GvUNIQUE((GV*)dstr)) { | |
5bd07a3d DM |
3743 | Perl_croak(aTHX_ PL_no_modify); |
3744 | } | |
3745 | #endif | |
3746 | ||
a0d0e21e | 3747 | (void)SvOK_off(dstr); |
a5f75d66 | 3748 | GvINTRO_off(dstr); /* one-shot flag */ |
1edc1566 | 3749 | gp_free((GV*)dstr); |
79072805 | 3750 | GvGP(dstr) = gp_ref(GvGP(sstr)); |
27c9684d AP |
3751 | if (SvTAINTED(sstr)) |
3752 | SvTAINT(dstr); | |
1d7c1841 GS |
3753 | if (GvIMPORTED(dstr) != GVf_IMPORTED |
3754 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
3755 | { | |
a5f75d66 | 3756 | GvIMPORTED_on(dstr); |
1d7c1841 | 3757 | } |
a5f75d66 | 3758 | GvMULTI_on(dstr); |
79072805 LW |
3759 | return; |
3760 | } | |
3761 | /* FALL THROUGH */ | |
3762 | ||
3763 | default: | |
8d6d96c1 | 3764 | if (SvGMAGICAL(sstr) && (flags & SV_GMAGIC)) { |
973f89ab | 3765 | mg_get(sstr); |
eb160463 | 3766 | if ((int)SvTYPE(sstr) != stype) { |
973f89ab CS |
3767 | stype = SvTYPE(sstr); |
3768 | if (stype == SVt_PVGV && dtype <= SVt_PVGV) | |
3769 | goto glob_assign; | |
3770 | } | |
3771 | } | |
ded42b9f | 3772 | if (stype == SVt_PVLV) |
6fc92669 | 3773 | (void)SvUPGRADE(dstr, SVt_PVNV); |
ded42b9f | 3774 | else |
eb160463 | 3775 | (void)SvUPGRADE(dstr, (U32)stype); |
79072805 LW |
3776 | } |
3777 | ||
8990e307 LW |
3778 | sflags = SvFLAGS(sstr); |
3779 | ||
3780 | if (sflags & SVf_ROK) { | |
3781 | if (dtype >= SVt_PV) { | |
3782 | if (dtype == SVt_PVGV) { | |
3783 | SV *sref = SvREFCNT_inc(SvRV(sstr)); | |
3784 | SV *dref = 0; | |
a5f75d66 | 3785 | int intro = GvINTRO(dstr); |
a0d0e21e | 3786 | |
7fb37951 AMS |
3787 | #ifdef GV_UNIQUE_CHECK |
3788 | if (GvUNIQUE((GV*)dstr)) { | |
5bd07a3d DM |
3789 | Perl_croak(aTHX_ PL_no_modify); |
3790 | } | |
3791 | #endif | |
3792 | ||
a0d0e21e | 3793 | if (intro) { |
a5f75d66 | 3794 | GvINTRO_off(dstr); /* one-shot flag */ |
1d7c1841 | 3795 | GvLINE(dstr) = CopLINE(PL_curcop); |
1edc1566 | 3796 | GvEGV(dstr) = (GV*)dstr; |
a0d0e21e | 3797 | } |
a5f75d66 | 3798 | GvMULTI_on(dstr); |
8990e307 LW |
3799 | switch (SvTYPE(sref)) { |
3800 | case SVt_PVAV: | |
a0d0e21e | 3801 | if (intro) |
890ed176 | 3802 | SAVEGENERICSV(GvAV(dstr)); |
a0d0e21e LW |
3803 | else |
3804 | dref = (SV*)GvAV(dstr); | |
8990e307 | 3805 | GvAV(dstr) = (AV*)sref; |
39bac7f7 | 3806 | if (!GvIMPORTED_AV(dstr) |
1d7c1841 GS |
3807 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
3808 | { | |
a5f75d66 | 3809 | GvIMPORTED_AV_on(dstr); |
1d7c1841 | 3810 | } |
8990e307 LW |
3811 | break; |
3812 | case SVt_PVHV: | |
a0d0e21e | 3813 | if (intro) |
890ed176 | 3814 | SAVEGENERICSV(GvHV(dstr)); |
a0d0e21e LW |
3815 | else |
3816 | dref = (SV*)GvHV(dstr); | |
8990e307 | 3817 | GvHV(dstr) = (HV*)sref; |
39bac7f7 | 3818 | if (!GvIMPORTED_HV(dstr) |
1d7c1841 GS |
3819 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
3820 | { | |
a5f75d66 | 3821 | GvIMPORTED_HV_on(dstr); |
1d7c1841 | 3822 | } |
8990e307 LW |
3823 | break; |
3824 | case SVt_PVCV: | |
8ebc5c01 | 3825 | if (intro) { |
3826 | if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) { | |
3827 | SvREFCNT_dec(GvCV(dstr)); | |
3828 | GvCV(dstr) = Nullcv; | |
68dc0745 | 3829 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
3280af22 | 3830 | PL_sub_generation++; |
8ebc5c01 | 3831 | } |
890ed176 | 3832 | SAVEGENERICSV(GvCV(dstr)); |
8ebc5c01 | 3833 | } |
68dc0745 | 3834 | else |
3835 | dref = (SV*)GvCV(dstr); | |
3836 | if (GvCV(dstr) != (CV*)sref) { | |
748a9306 | 3837 | CV* cv = GvCV(dstr); |
4633a7c4 | 3838 | if (cv) { |
68dc0745 | 3839 | if (!GvCVGEN((GV*)dstr) && |
3840 | (CvROOT(cv) || CvXSUB(cv))) | |
3841 | { | |
7bac28a0 | 3842 | /* ahem, death to those who redefine |
3843 | * active sort subs */ | |
3280af22 NIS |
3844 | if (PL_curstackinfo->si_type == PERLSI_SORT && |
3845 | PL_sortcop == CvSTART(cv)) | |
1c846c1f | 3846 | Perl_croak(aTHX_ |
7bac28a0 | 3847 | "Can't redefine active sort subroutine %s", |
3848 | GvENAME((GV*)dstr)); | |
beab0874 JT |
3849 | /* Redefining a sub - warning is mandatory if |
3850 | it was a const and its value changed. */ | |
3851 | if (ckWARN(WARN_REDEFINE) | |
3852 | || (CvCONST(cv) | |
3853 | && (!CvCONST((CV*)sref) | |
3854 | || sv_cmp(cv_const_sv(cv), | |
3855 | cv_const_sv((CV*)sref))))) | |
3856 | { | |
9014280d | 3857 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
beab0874 | 3858 | CvCONST(cv) |
910764e6 RGS |
3859 | ? "Constant subroutine %s::%s redefined" |
3860 | : "Subroutine %s::%s redefined", | |
3861 | HvNAME(GvSTASH((GV*)dstr)), | |
beab0874 JT |
3862 | GvENAME((GV*)dstr)); |
3863 | } | |
9607fc9c | 3864 | } |
fb24441d RGS |
3865 | if (!intro) |
3866 | cv_ckproto(cv, (GV*)dstr, | |
3867 | SvPOK(sref) ? SvPVX(sref) : Nullch); | |
4633a7c4 | 3868 | } |
a5f75d66 | 3869 | GvCV(dstr) = (CV*)sref; |
7a4c00b4 | 3870 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
a5f75d66 | 3871 | GvASSUMECV_on(dstr); |
3280af22 | 3872 | PL_sub_generation++; |
a5f75d66 | 3873 | } |
39bac7f7 | 3874 | if (!GvIMPORTED_CV(dstr) |
1d7c1841 GS |
3875 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
3876 | { | |
a5f75d66 | 3877 | GvIMPORTED_CV_on(dstr); |
1d7c1841 | 3878 | } |
8990e307 | 3879 | break; |
91bba347 LW |
3880 | case SVt_PVIO: |
3881 | if (intro) | |
890ed176 | 3882 | SAVEGENERICSV(GvIOp(dstr)); |
91bba347 LW |
3883 | else |
3884 | dref = (SV*)GvIOp(dstr); | |
3885 | GvIOp(dstr) = (IO*)sref; | |
3886 | break; | |
f4d13ee9 JH |
3887 | case SVt_PVFM: |
3888 | if (intro) | |
890ed176 | 3889 | SAVEGENERICSV(GvFORM(dstr)); |
f4d13ee9 JH |
3890 | else |
3891 | dref = (SV*)GvFORM(dstr); | |
3892 | GvFORM(dstr) = (CV*)sref; | |
3893 | break; | |
8990e307 | 3894 | default: |
a0d0e21e | 3895 | if (intro) |
890ed176 | 3896 | SAVEGENERICSV(GvSV(dstr)); |
a0d0e21e LW |
3897 | else |
3898 | dref = (SV*)GvSV(dstr); | |
8990e307 | 3899 | GvSV(dstr) = sref; |
39bac7f7 | 3900 | if (!GvIMPORTED_SV(dstr) |
1d7c1841 GS |
3901 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
3902 | { | |
a5f75d66 | 3903 | GvIMPORTED_SV_on(dstr); |
1d7c1841 | 3904 | } |
8990e307 LW |
3905 | break; |
3906 | } | |
3907 | if (dref) | |
3908 | SvREFCNT_dec(dref); | |
27c9684d AP |
3909 | if (SvTAINTED(sstr)) |
3910 | SvTAINT(dstr); | |
8990e307 LW |
3911 | return; |
3912 | } | |
a0d0e21e | 3913 | if (SvPVX(dstr)) { |
760ac839 | 3914 | (void)SvOOK_off(dstr); /* backoff */ |
50483b2c JD |
3915 | if (SvLEN(dstr)) |
3916 | Safefree(SvPVX(dstr)); | |
a0d0e21e LW |
3917 | SvLEN(dstr)=SvCUR(dstr)=0; |
3918 | } | |
8990e307 | 3919 | } |
a0d0e21e | 3920 | (void)SvOK_off(dstr); |
8990e307 | 3921 | SvRV(dstr) = SvREFCNT_inc(SvRV(sstr)); |
ed6116ce | 3922 | SvROK_on(dstr); |
8990e307 | 3923 | if (sflags & SVp_NOK) { |
3332b3c1 JH |
3924 | SvNOKp_on(dstr); |
3925 | /* Only set the public OK flag if the source has public OK. */ | |
3926 | if (sflags & SVf_NOK) | |
3927 | SvFLAGS(dstr) |= SVf_NOK; | |
ed6116ce LW |
3928 | SvNVX(dstr) = SvNVX(sstr); |
3929 | } | |
8990e307 | 3930 | if (sflags & SVp_IOK) { |
3332b3c1 JH |
3931 | (void)SvIOKp_on(dstr); |
3932 | if (sflags & SVf_IOK) | |
3933 | SvFLAGS(dstr) |= SVf_IOK; | |
2b1c7e3e | 3934 | if (sflags & SVf_IVisUV) |
25da4f38 | 3935 | SvIsUV_on(dstr); |
3332b3c1 | 3936 | SvIVX(dstr) = SvIVX(sstr); |
ed6116ce | 3937 | } |
a0d0e21e LW |
3938 | if (SvAMAGIC(sstr)) { |
3939 | SvAMAGIC_on(dstr); | |
3940 | } | |
ed6116ce | 3941 | } |
8990e307 | 3942 | else if (sflags & SVp_POK) { |
765f542d | 3943 | bool isSwipe = 0; |
79072805 LW |
3944 | |
3945 | /* | |
3946 | * Check to see if we can just swipe the string. If so, it's a | |
3947 | * possible small lose on short strings, but a big win on long ones. | |
463ee0b2 LW |
3948 | * It might even be a win on short strings if SvPVX(dstr) |
3949 | * has to be allocated and SvPVX(sstr) has to be freed. | |
79072805 LW |
3950 | */ |
3951 | ||
765f542d NC |
3952 | if ( |
3953 | #ifdef PERL_COPY_ON_WRITE | |
3954 | (sflags & (SVf_FAKE | SVf_READONLY)) != (SVf_FAKE | SVf_READONLY) | |
3955 | && | |
3956 | #endif | |
3957 | !(isSwipe = | |
3958 | (sflags & SVs_TEMP) && /* slated for free anyway? */ | |
3959 | !(sflags & SVf_OOK) && /* and not involved in OOK hack? */ | |
3960 | SvREFCNT(sstr) == 1 && /* and no other references to it? */ | |
3961 | SvLEN(sstr) && /* and really is a string */ | |
645c22ef | 3962 | /* and won't be needed again, potentially */ |
765f542d NC |
3963 | !(PL_op && PL_op->op_type == OP_AASSIGN)) |
3964 | #ifdef PERL_COPY_ON_WRITE | |
3965 | && !((sflags & CAN_COW_MASK) == CAN_COW_FLAGS | |
3966 | && SvTYPE(sstr) >= SVt_PVIV) | |
3967 | #endif | |
3968 | ) { | |
3969 | /* Failed the swipe test, and it's not a shared hash key either. | |
3970 | Have to copy the string. */ | |
3971 | STRLEN len = SvCUR(sstr); | |
3972 | SvGROW(dstr, len + 1); /* inlined from sv_setpvn */ | |
3973 | Move(SvPVX(sstr),SvPVX(dstr),len,char); | |
3974 | SvCUR_set(dstr, len); | |
3975 | *SvEND(dstr) = '\0'; | |
3976 | (void)SvPOK_only(dstr); | |
3977 | } else { | |
3978 | /* If PERL_COPY_ON_WRITE is not defined, then isSwipe will always | |
3979 | be true in here. */ | |
3980 | #ifdef PERL_COPY_ON_WRITE | |
3981 | /* Either it's a shared hash key, or it's suitable for | |
3982 | copy-on-write or we can swipe the string. */ | |
46187eeb | 3983 | if (DEBUG_C_TEST) { |
ed252734 | 3984 | PerlIO_printf(Perl_debug_log, "Copy on write: sstr --> dstr\n"); |
e419cbc5 NC |
3985 | sv_dump(sstr); |
3986 | sv_dump(dstr); | |
46187eeb | 3987 | } |
765f542d NC |
3988 | if (!isSwipe) { |
3989 | /* I believe I should acquire a global SV mutex if | |
3990 | it's a COW sv (not a shared hash key) to stop | |
3991 | it going un copy-on-write. | |
3992 | If the source SV has gone un copy on write between up there | |
3993 | and down here, then (assert() that) it is of the correct | |
3994 | form to make it copy on write again */ | |
3995 | if ((sflags & (SVf_FAKE | SVf_READONLY)) | |
3996 | != (SVf_FAKE | SVf_READONLY)) { | |
3997 | SvREADONLY_on(sstr); | |
3998 | SvFAKE_on(sstr); | |
3999 | /* Make the source SV into a loop of 1. | |
4000 | (about to become 2) */ | |
a29f6d03 | 4001 | SV_COW_NEXT_SV_SET(sstr, sstr); |
765f542d NC |
4002 | } |
4003 | } | |
4004 | #endif | |
4005 | /* Initial code is common. */ | |
adbc6bb1 | 4006 | if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */ |
a5f75d66 AD |
4007 | if (SvOOK(dstr)) { |
4008 | SvFLAGS(dstr) &= ~SVf_OOK; | |
4009 | Safefree(SvPVX(dstr) - SvIVX(dstr)); | |
4010 | } | |
50483b2c | 4011 | else if (SvLEN(dstr)) |
a5f75d66 | 4012 | Safefree(SvPVX(dstr)); |
79072805 | 4013 | } |
a5f75d66 | 4014 | (void)SvPOK_only(dstr); |
765f542d NC |
4015 | |
4016 | #ifdef PERL_COPY_ON_WRITE | |
4017 | if (!isSwipe) { | |
4018 | /* making another shared SV. */ | |
4019 | STRLEN cur = SvCUR(sstr); | |
4020 | STRLEN len = SvLEN(sstr); | |
d89fc664 | 4021 | assert (SvTYPE(dstr) >= SVt_PVIV); |
765f542d NC |
4022 | if (len) { |
4023 | /* SvIsCOW_normal */ | |
4024 | /* splice us in between source and next-after-source. */ | |
a29f6d03 NC |
4025 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); |
4026 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
765f542d NC |
4027 | SvPV_set(dstr, SvPVX(sstr)); |
4028 | } else { | |
4029 | /* SvIsCOW_shared_hash */ | |
4030 | UV hash = SvUVX(sstr); | |
46187eeb NC |
4031 | DEBUG_C(PerlIO_printf(Perl_debug_log, |
4032 | "Copy on write: Sharing hash\n")); | |
765f542d NC |
4033 | SvPV_set(dstr, |
4034 | sharepvn(SvPVX(sstr), | |
4035 | (sflags & SVf_UTF8?-cur:cur), hash)); | |
4036 | SvUVX(dstr) = hash; | |
4037 | } | |
4038 | SvLEN(dstr) = len; | |
4039 | SvCUR(dstr) = cur; | |
4040 | SvREADONLY_on(dstr); | |
4041 | SvFAKE_on(dstr); | |
4042 | /* Relesase a global SV mutex. */ | |
4043 | } | |
4044 | else | |
4045 | #endif | |
4046 | { /* Passes the swipe test. */ | |
4047 | SvPV_set(dstr, SvPVX(sstr)); | |
4048 | SvLEN_set(dstr, SvLEN(sstr)); | |
4049 | SvCUR_set(dstr, SvCUR(sstr)); | |
4050 | ||
4051 | SvTEMP_off(dstr); | |
4052 | (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */ | |
4053 | SvPV_set(sstr, Nullch); | |
4054 | SvLEN_set(sstr, 0); | |
4055 | SvCUR_set(sstr, 0); | |
4056 | SvTEMP_off(sstr); | |
4057 | } | |
4058 | } | |
9aa983d2 | 4059 | if (sflags & SVf_UTF8) |
a7cb1f99 | 4060 | SvUTF8_on(dstr); |
79072805 | 4061 | /*SUPPRESS 560*/ |
8990e307 | 4062 | if (sflags & SVp_NOK) { |
3332b3c1 JH |
4063 | SvNOKp_on(dstr); |
4064 | if (sflags & SVf_NOK) | |
4065 | SvFLAGS(dstr) |= SVf_NOK; | |
463ee0b2 | 4066 | SvNVX(dstr) = SvNVX(sstr); |
79072805 | 4067 | } |
8990e307 | 4068 | if (sflags & SVp_IOK) { |
3332b3c1 JH |
4069 | (void)SvIOKp_on(dstr); |
4070 | if (sflags & SVf_IOK) | |
4071 | SvFLAGS(dstr) |= SVf_IOK; | |
2b1c7e3e | 4072 | if (sflags & SVf_IVisUV) |
25da4f38 | 4073 | SvIsUV_on(dstr); |
463ee0b2 | 4074 | SvIVX(dstr) = SvIVX(sstr); |
79072805 | 4075 | } |
92f0c265 | 4076 | if (SvVOK(sstr)) { |
ece467f9 JP |
4077 | MAGIC *smg = mg_find(sstr,PERL_MAGIC_vstring); |
4078 | sv_magic(dstr, NULL, PERL_MAGIC_vstring, | |
4079 | smg->mg_ptr, smg->mg_len); | |
439cb1c4 | 4080 | SvRMAGICAL_on(dstr); |
92f0c265 | 4081 | } |
79072805 | 4082 | } |
8990e307 | 4083 | else if (sflags & SVp_IOK) { |
3332b3c1 JH |
4084 | if (sflags & SVf_IOK) |
4085 | (void)SvIOK_only(dstr); | |
4086 | else { | |
9cbac4c7 DM |
4087 | (void)SvOK_off(dstr); |
4088 | (void)SvIOKp_on(dstr); | |
3332b3c1 JH |
4089 | } |
4090 | /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */ | |
2b1c7e3e | 4091 | if (sflags & SVf_IVisUV) |
25da4f38 | 4092 | SvIsUV_on(dstr); |
3332b3c1 JH |
4093 | SvIVX(dstr) = SvIVX(sstr); |
4094 | if (sflags & SVp_NOK) { | |
4095 | if (sflags & SVf_NOK) | |
4096 | (void)SvNOK_on(dstr); | |
4097 | else | |
4098 | (void)SvNOKp_on(dstr); | |
4099 | SvNVX(dstr) = SvNVX(sstr); | |
4100 | } | |
4101 | } | |
4102 | else if (sflags & SVp_NOK) { | |
4103 | if (sflags & SVf_NOK) | |
4104 | (void)SvNOK_only(dstr); | |
4105 | else { | |
9cbac4c7 | 4106 | (void)SvOK_off(dstr); |
3332b3c1 JH |
4107 | SvNOKp_on(dstr); |
4108 | } | |
4109 | SvNVX(dstr) = SvNVX(sstr); | |
79072805 LW |
4110 | } |
4111 | else { | |
20408e3c | 4112 | if (dtype == SVt_PVGV) { |
e476b1b5 | 4113 | if (ckWARN(WARN_MISC)) |
9014280d | 4114 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Undefined value assigned to typeglob"); |
20408e3c GS |
4115 | } |
4116 | else | |
4117 | (void)SvOK_off(dstr); | |
a0d0e21e | 4118 | } |
27c9684d AP |
4119 | if (SvTAINTED(sstr)) |
4120 | SvTAINT(dstr); | |
79072805 LW |
4121 | } |
4122 | ||
954c1994 GS |
4123 | /* |
4124 | =for apidoc sv_setsv_mg | |
4125 | ||
4126 | Like C<sv_setsv>, but also handles 'set' magic. | |
4127 | ||
4128 | =cut | |
4129 | */ | |
4130 | ||
79072805 | 4131 | void |
864dbfa3 | 4132 | Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr) |
ef50df4b GS |
4133 | { |
4134 | sv_setsv(dstr,sstr); | |
4135 | SvSETMAGIC(dstr); | |
4136 | } | |
4137 | ||
ed252734 NC |
4138 | #ifdef PERL_COPY_ON_WRITE |
4139 | SV * | |
4140 | Perl_sv_setsv_cow(pTHX_ SV *dstr, SV *sstr) | |
4141 | { | |
4142 | STRLEN cur = SvCUR(sstr); | |
4143 | STRLEN len = SvLEN(sstr); | |
4144 | register char *new_pv; | |
4145 | ||
4146 | if (DEBUG_C_TEST) { | |
4147 | PerlIO_printf(Perl_debug_log, "Fast copy on write: %p -> %p\n", | |
4148 | sstr, dstr); | |
4149 | sv_dump(sstr); | |
4150 | if (dstr) | |
4151 | sv_dump(dstr); | |
4152 | } | |
4153 | ||
4154 | if (dstr) { | |
4155 | if (SvTHINKFIRST(dstr)) | |
4156 | sv_force_normal_flags(dstr, SV_COW_DROP_PV); | |
4157 | else if (SvPVX(dstr)) | |
4158 | Safefree(SvPVX(dstr)); | |
4159 | } | |
4160 | else | |
4161 | new_SV(dstr); | |
4162 | SvUPGRADE (dstr, SVt_PVIV); | |
4163 | ||
4164 | assert (SvPOK(sstr)); | |
4165 | assert (SvPOKp(sstr)); | |
4166 | assert (!SvIOK(sstr)); | |
4167 | assert (!SvIOKp(sstr)); | |
4168 | assert (!SvNOK(sstr)); | |
4169 | assert (!SvNOKp(sstr)); | |
4170 | ||
4171 | if (SvIsCOW(sstr)) { | |
4172 | ||
4173 | if (SvLEN(sstr) == 0) { | |
4174 | /* source is a COW shared hash key. */ | |
4175 | UV hash = SvUVX(sstr); | |
4176 | DEBUG_C(PerlIO_printf(Perl_debug_log, | |
4177 | "Fast copy on write: Sharing hash\n")); | |
4178 | SvUVX(dstr) = hash; | |
4179 | new_pv = sharepvn(SvPVX(sstr), (SvUTF8(sstr)?-cur:cur), hash); | |
4180 | goto common_exit; | |
4181 | } | |
4182 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); | |
4183 | } else { | |
4184 | assert ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS); | |
4185 | SvUPGRADE (sstr, SVt_PVIV); | |
4186 | SvREADONLY_on(sstr); | |
4187 | SvFAKE_on(sstr); | |
4188 | DEBUG_C(PerlIO_printf(Perl_debug_log, | |
4189 | "Fast copy on write: Converting sstr to COW\n")); | |
4190 | SV_COW_NEXT_SV_SET(dstr, sstr); | |
4191 | } | |
4192 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
4193 | new_pv = SvPVX(sstr); | |
4194 | ||
4195 | common_exit: | |
4196 | SvPV_set(dstr, new_pv); | |
4197 | SvFLAGS(dstr) = (SVt_PVIV|SVf_POK|SVp_POK|SVf_FAKE|SVf_READONLY); | |
4198 | if (SvUTF8(sstr)) | |
4199 | SvUTF8_on(dstr); | |
4200 | SvLEN(dstr) = len; | |
4201 | SvCUR(dstr) = cur; | |
4202 | if (DEBUG_C_TEST) { | |
4203 | sv_dump(dstr); | |
4204 | } | |
4205 | return dstr; | |
4206 | } | |
4207 | #endif | |
4208 | ||
954c1994 GS |
4209 | /* |
4210 | =for apidoc sv_setpvn | |
4211 | ||
4212 | Copies a string into an SV. The C<len> parameter indicates the number of | |
4213 | bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>. | |
4214 | ||
4215 | =cut | |
4216 | */ | |
4217 | ||
ef50df4b | 4218 | void |
864dbfa3 | 4219 | Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
79072805 | 4220 | { |
c6f8c383 | 4221 | register char *dptr; |
22c522df | 4222 | |
765f542d | 4223 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 4224 | if (!ptr) { |
a0d0e21e | 4225 | (void)SvOK_off(sv); |
463ee0b2 LW |
4226 | return; |
4227 | } | |
22c522df JH |
4228 | else { |
4229 | /* len is STRLEN which is unsigned, need to copy to signed */ | |
4230 | IV iv = len; | |
9c5ffd7c JH |
4231 | if (iv < 0) |
4232 | Perl_croak(aTHX_ "panic: sv_setpvn called with negative strlen"); | |
22c522df | 4233 | } |
6fc92669 | 4234 | (void)SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 4235 | |
79072805 | 4236 | SvGROW(sv, len + 1); |
c6f8c383 GA |
4237 | dptr = SvPVX(sv); |
4238 | Move(ptr,dptr,len,char); | |
4239 | dptr[len] = '\0'; | |
79072805 | 4240 | SvCUR_set(sv, len); |
1aa99e6b | 4241 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4242 | SvTAINT(sv); |
79072805 LW |
4243 | } |
4244 | ||
954c1994 GS |
4245 | /* |
4246 | =for apidoc sv_setpvn_mg | |
4247 | ||
4248 | Like C<sv_setpvn>, but also handles 'set' magic. | |
4249 | ||
4250 | =cut | |
4251 | */ | |
4252 | ||
79072805 | 4253 | void |
864dbfa3 | 4254 | Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
ef50df4b GS |
4255 | { |
4256 | sv_setpvn(sv,ptr,len); | |
4257 | SvSETMAGIC(sv); | |
4258 | } | |
4259 | ||
954c1994 GS |
4260 | /* |
4261 | =for apidoc sv_setpv | |
4262 | ||
4263 | Copies a string into an SV. The string must be null-terminated. Does not | |
4264 | handle 'set' magic. See C<sv_setpv_mg>. | |
4265 | ||
4266 | =cut | |
4267 | */ | |
4268 | ||
ef50df4b | 4269 | void |
864dbfa3 | 4270 | Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
4271 | { |
4272 | register STRLEN len; | |
4273 | ||
765f542d | 4274 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 4275 | if (!ptr) { |
a0d0e21e | 4276 | (void)SvOK_off(sv); |
463ee0b2 LW |
4277 | return; |
4278 | } | |
79072805 | 4279 | len = strlen(ptr); |
6fc92669 | 4280 | (void)SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 4281 | |
79072805 | 4282 | SvGROW(sv, len + 1); |
463ee0b2 | 4283 | Move(ptr,SvPVX(sv),len+1,char); |
79072805 | 4284 | SvCUR_set(sv, len); |
1aa99e6b | 4285 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 LW |
4286 | SvTAINT(sv); |
4287 | } | |
4288 | ||
954c1994 GS |
4289 | /* |
4290 | =for apidoc sv_setpv_mg | |
4291 | ||
4292 | Like C<sv_setpv>, but also handles 'set' magic. | |
4293 | ||
4294 | =cut | |
4295 | */ | |
4296 | ||
463ee0b2 | 4297 | void |
864dbfa3 | 4298 | Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b GS |
4299 | { |
4300 | sv_setpv(sv,ptr); | |
4301 | SvSETMAGIC(sv); | |
4302 | } | |
4303 | ||
954c1994 GS |
4304 | /* |
4305 | =for apidoc sv_usepvn | |
4306 | ||
4307 | Tells an SV to use C<ptr> to find its string value. Normally the string is | |
1c846c1f | 4308 | stored inside the SV but sv_usepvn allows the SV to use an outside string. |
954c1994 GS |
4309 | The C<ptr> should point to memory that was allocated by C<malloc>. The |
4310 | string length, C<len>, must be supplied. This function will realloc the | |
4311 | memory pointed to by C<ptr>, so that pointer should not be freed or used by | |
4312 | the programmer after giving it to sv_usepvn. Does not handle 'set' magic. | |
4313 | See C<sv_usepvn_mg>. | |
4314 | ||
4315 | =cut | |
4316 | */ | |
4317 | ||
ef50df4b | 4318 | void |
864dbfa3 | 4319 | Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len) |
463ee0b2 | 4320 | { |
765f542d | 4321 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
c6f8c383 | 4322 | (void)SvUPGRADE(sv, SVt_PV); |
463ee0b2 | 4323 | if (!ptr) { |
a0d0e21e | 4324 | (void)SvOK_off(sv); |
463ee0b2 LW |
4325 | return; |
4326 | } | |
a0ed51b3 | 4327 | (void)SvOOK_off(sv); |
50483b2c | 4328 | if (SvPVX(sv) && SvLEN(sv)) |
463ee0b2 LW |
4329 | Safefree(SvPVX(sv)); |
4330 | Renew(ptr, len+1, char); | |
4331 | SvPVX(sv) = ptr; | |
4332 | SvCUR_set(sv, len); | |
4333 | SvLEN_set(sv, len+1); | |
4334 | *SvEND(sv) = '\0'; | |
1aa99e6b | 4335 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4336 | SvTAINT(sv); |
79072805 LW |
4337 | } |
4338 | ||
954c1994 GS |
4339 | /* |
4340 | =for apidoc sv_usepvn_mg | |
4341 | ||
4342 | Like C<sv_usepvn>, but also handles 'set' magic. | |
4343 | ||
4344 | =cut | |
4345 | */ | |
4346 | ||
ef50df4b | 4347 | void |
864dbfa3 | 4348 | Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len) |
ef50df4b | 4349 | { |
51c1089b | 4350 | sv_usepvn(sv,ptr,len); |
ef50df4b GS |
4351 | SvSETMAGIC(sv); |
4352 | } | |
4353 | ||
765f542d NC |
4354 | #ifdef PERL_COPY_ON_WRITE |
4355 | /* Need to do this *after* making the SV normal, as we need the buffer | |
4356 | pointer to remain valid until after we've copied it. If we let go too early, | |
4357 | another thread could invalidate it by unsharing last of the same hash key | |
4358 | (which it can do by means other than releasing copy-on-write Svs) | |
4359 | or by changing the other copy-on-write SVs in the loop. */ | |
4360 | STATIC void | |
4361 | S_sv_release_COW(pTHX_ register SV *sv, char *pvx, STRLEN cur, STRLEN len, | |
4362 | U32 hash, SV *after) | |
4363 | { | |
4364 | if (len) { /* this SV was SvIsCOW_normal(sv) */ | |
4365 | /* we need to find the SV pointing to us. */ | |
4366 | SV *current = SV_COW_NEXT_SV(after); | |
4367 | ||
4368 | if (current == sv) { | |
4369 | /* The SV we point to points back to us (there were only two of us | |
4370 | in the loop.) | |
4371 | Hence other SV is no longer copy on write either. */ | |
4372 | SvFAKE_off(after); | |
4373 | SvREADONLY_off(after); | |
4374 | } else { | |
4375 | /* We need to follow the pointers around the loop. */ | |
4376 | SV *next; | |
4377 | while ((next = SV_COW_NEXT_SV(current)) != sv) { | |
4378 | assert (next); | |
4379 | current = next; | |
4380 | /* don't loop forever if the structure is bust, and we have | |
4381 | a pointer into a closed loop. */ | |
4382 | assert (current != after); | |
e419cbc5 | 4383 | assert (SvPVX(current) == pvx); |
765f542d NC |
4384 | } |
4385 | /* Make the SV before us point to the SV after us. */ | |
a29f6d03 | 4386 | SV_COW_NEXT_SV_SET(current, after); |
765f542d NC |
4387 | } |
4388 | } else { | |
4389 | unsharepvn(pvx, SvUTF8(sv) ? -(I32)cur : cur, hash); | |
4390 | } | |
4391 | } | |
4392 | ||
4393 | int | |
4394 | Perl_sv_release_IVX(pTHX_ register SV *sv) | |
4395 | { | |
4396 | if (SvIsCOW(sv)) | |
4397 | sv_force_normal_flags(sv, 0); | |
4398 | return SvOOK_off(sv); | |
4399 | } | |
4400 | #endif | |
645c22ef DM |
4401 | /* |
4402 | =for apidoc sv_force_normal_flags | |
4403 | ||
4404 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
4405 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
765f542d NC |
4406 | an xpvmg; if we're a copy-on-write scalar, this is the on-write time when |
4407 | we do the copy, and is also used locally. If C<SV_COW_DROP_PV> is set | |
4408 | then a copy-on-write scalar drops its PV buffer (if any) and becomes | |
4409 | SvPOK_off rather than making a copy. (Used where this scalar is about to be | |
d3050d9d | 4410 | set to some other value.) In addition, the C<flags> parameter gets passed to |
765f542d NC |
4411 | C<sv_unref_flags()> when unrefing. C<sv_force_normal> calls this function |
4412 | with flags set to 0. | |
645c22ef DM |
4413 | |
4414 | =cut | |
4415 | */ | |
4416 | ||
6fc92669 | 4417 | void |
840a7b70 | 4418 | Perl_sv_force_normal_flags(pTHX_ register SV *sv, U32 flags) |
0f15f207 | 4419 | { |
765f542d NC |
4420 | #ifdef PERL_COPY_ON_WRITE |
4421 | if (SvREADONLY(sv)) { | |
4422 | /* At this point I believe I should acquire a global SV mutex. */ | |
4423 | if (SvFAKE(sv)) { | |
4424 | char *pvx = SvPVX(sv); | |
4425 | STRLEN len = SvLEN(sv); | |
4426 | STRLEN cur = SvCUR(sv); | |
4427 | U32 hash = SvUVX(sv); | |
4428 | SV *next = SV_COW_NEXT_SV(sv); /* next COW sv in the loop. */ | |
46187eeb NC |
4429 | if (DEBUG_C_TEST) { |
4430 | PerlIO_printf(Perl_debug_log, | |
4431 | "Copy on write: Force normal %ld\n", | |
4432 | (long) flags); | |
e419cbc5 | 4433 | sv_dump(sv); |
46187eeb | 4434 | } |
765f542d NC |
4435 | SvFAKE_off(sv); |
4436 | SvREADONLY_off(sv); | |
4437 | /* This SV doesn't own the buffer, so need to New() a new one: */ | |
4438 | SvPVX(sv) = 0; | |
4439 | SvLEN(sv) = 0; | |
4440 | if (flags & SV_COW_DROP_PV) { | |
4441 | /* OK, so we don't need to copy our buffer. */ | |
4442 | SvPOK_off(sv); | |
4443 | } else { | |
4444 | SvGROW(sv, cur + 1); | |
4445 | Move(pvx,SvPVX(sv),cur,char); | |
4446 | SvCUR(sv) = cur; | |
4447 | *SvEND(sv) = '\0'; | |
4448 | } | |
e419cbc5 | 4449 | sv_release_COW(sv, pvx, cur, len, hash, next); |
46187eeb | 4450 | if (DEBUG_C_TEST) { |
e419cbc5 | 4451 | sv_dump(sv); |
46187eeb | 4452 | } |
765f542d NC |
4453 | } |
4454 | else if (PL_curcop != &PL_compiling) | |
4455 | Perl_croak(aTHX_ PL_no_modify); | |
4456 | /* At this point I believe that I can drop the global SV mutex. */ | |
4457 | } | |
4458 | #else | |
2213622d | 4459 | if (SvREADONLY(sv)) { |
1c846c1f NIS |
4460 | if (SvFAKE(sv)) { |
4461 | char *pvx = SvPVX(sv); | |
4462 | STRLEN len = SvCUR(sv); | |
4463 | U32 hash = SvUVX(sv); | |
10bcdfd6 NC |
4464 | SvFAKE_off(sv); |
4465 | SvREADONLY_off(sv); | |
1c846c1f NIS |
4466 | SvGROW(sv, len + 1); |
4467 | Move(pvx,SvPVX(sv),len,char); | |
4468 | *SvEND(sv) = '\0'; | |
25716404 | 4469 | unsharepvn(pvx, SvUTF8(sv) ? -(I32)len : len, hash); |
1c846c1f NIS |
4470 | } |
4471 | else if (PL_curcop != &PL_compiling) | |
cea2e8a9 | 4472 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 4473 | } |
765f542d | 4474 | #endif |
2213622d | 4475 | if (SvROK(sv)) |
840a7b70 | 4476 | sv_unref_flags(sv, flags); |
6fc92669 GS |
4477 | else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) |
4478 | sv_unglob(sv); | |
0f15f207 | 4479 | } |
1c846c1f | 4480 | |
645c22ef DM |
4481 | /* |
4482 | =for apidoc sv_force_normal | |
4483 | ||
4484 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
4485 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
4486 | an xpvmg. See also C<sv_force_normal_flags>. | |
4487 | ||
4488 | =cut | |
4489 | */ | |
4490 | ||
840a7b70 IZ |
4491 | void |
4492 | Perl_sv_force_normal(pTHX_ register SV *sv) | |
4493 | { | |
4494 | sv_force_normal_flags(sv, 0); | |
4495 | } | |
4496 | ||
954c1994 GS |
4497 | /* |
4498 | =for apidoc sv_chop | |
4499 | ||
1c846c1f | 4500 | Efficient removal of characters from the beginning of the string buffer. |
954c1994 GS |
4501 | SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside |
4502 | the string buffer. The C<ptr> becomes the first character of the adjusted | |
645c22ef | 4503 | string. Uses the "OOK hack". |
954c1994 GS |
4504 | |
4505 | =cut | |
4506 | */ | |
4507 | ||
79072805 | 4508 | void |
645c22ef | 4509 | Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) |
79072805 LW |
4510 | { |
4511 | register STRLEN delta; | |
4512 | ||
a0d0e21e | 4513 | if (!ptr || !SvPOKp(sv)) |
79072805 | 4514 | return; |
2213622d | 4515 | SV_CHECK_THINKFIRST(sv); |
79072805 LW |
4516 | if (SvTYPE(sv) < SVt_PVIV) |
4517 | sv_upgrade(sv,SVt_PVIV); | |
4518 | ||
4519 | if (!SvOOK(sv)) { | |
50483b2c JD |
4520 | if (!SvLEN(sv)) { /* make copy of shared string */ |
4521 | char *pvx = SvPVX(sv); | |
4522 | STRLEN len = SvCUR(sv); | |
4523 | SvGROW(sv, len + 1); | |
4524 | Move(pvx,SvPVX(sv),len,char); | |
4525 | *SvEND(sv) = '\0'; | |
4526 | } | |
463ee0b2 | 4527 | SvIVX(sv) = 0; |
a4bfb290 AB |
4528 | /* Same SvOOK_on but SvOOK_on does a SvIOK_off |
4529 | and we do that anyway inside the SvNIOK_off | |
4530 | */ | |
4531 | SvFLAGS(sv) |= SVf_OOK; | |
79072805 | 4532 | } |
a4bfb290 | 4533 | SvNIOK_off(sv); |
463ee0b2 | 4534 | delta = ptr - SvPVX(sv); |
79072805 LW |
4535 | SvLEN(sv) -= delta; |
4536 | SvCUR(sv) -= delta; | |
463ee0b2 LW |
4537 | SvPVX(sv) += delta; |
4538 | SvIVX(sv) += delta; | |
79072805 LW |
4539 | } |
4540 | ||
09540bc3 JH |
4541 | /* sv_catpvn() is now a macro using Perl_sv_catpvn_flags(); |
4542 | * this function provided for binary compatibility only | |
4543 | */ | |
4544 | ||
4545 | void | |
4546 | Perl_sv_catpvn(pTHX_ SV *dsv, const char* sstr, STRLEN slen) | |
4547 | { | |
4548 | sv_catpvn_flags(dsv, sstr, slen, SV_GMAGIC); | |
4549 | } | |
4550 | ||
954c1994 GS |
4551 | /* |
4552 | =for apidoc sv_catpvn | |
4553 | ||
4554 | Concatenates the string onto the end of the string which is in the SV. The | |
d5ce4a7c GA |
4555 | C<len> indicates number of bytes to copy. If the SV has the UTF8 |
4556 | status set, then the bytes appended should be valid UTF8. | |
4557 | Handles 'get' magic, but not 'set' magic. See C<sv_catpvn_mg>. | |
954c1994 | 4558 | |
8d6d96c1 HS |
4559 | =for apidoc sv_catpvn_flags |
4560 | ||
4561 | Concatenates the string onto the end of the string which is in the SV. The | |
4562 | C<len> indicates number of bytes to copy. If the SV has the UTF8 | |
4563 | status set, then the bytes appended should be valid UTF8. | |
4564 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<dsv> if | |
4565 | appropriate, else not. C<sv_catpvn> and C<sv_catpvn_nomg> are implemented | |
4566 | in terms of this function. | |
4567 | ||
4568 | =cut | |
4569 | */ | |
4570 | ||
4571 | void | |
4572 | Perl_sv_catpvn_flags(pTHX_ register SV *dsv, register const char *sstr, register STRLEN slen, I32 flags) | |
4573 | { | |
4574 | STRLEN dlen; | |
4575 | char *dstr; | |
4576 | ||
4577 | dstr = SvPV_force_flags(dsv, dlen, flags); | |
4578 | SvGROW(dsv, dlen + slen + 1); | |
4579 | if (sstr == dstr) | |
4580 | sstr = SvPVX(dsv); | |
4581 | Move(sstr, SvPVX(dsv) + dlen, slen, char); | |
4582 | SvCUR(dsv) += slen; | |
4583 | *SvEND(dsv) = '\0'; | |
4584 | (void)SvPOK_only_UTF8(dsv); /* validate pointer */ | |
4585 | SvTAINT(dsv); | |
79072805 LW |
4586 | } |
4587 | ||
954c1994 GS |
4588 | /* |
4589 | =for apidoc sv_catpvn_mg | |
4590 | ||
4591 | Like C<sv_catpvn>, but also handles 'set' magic. | |
4592 | ||
4593 | =cut | |
4594 | */ | |
4595 | ||
79072805 | 4596 | void |
864dbfa3 | 4597 | Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
ef50df4b GS |
4598 | { |
4599 | sv_catpvn(sv,ptr,len); | |
4600 | SvSETMAGIC(sv); | |
4601 | } | |
4602 | ||
09540bc3 JH |
4603 | /* sv_catsv() is now a macro using Perl_sv_catsv_flags(); |
4604 | * this function provided for binary compatibility only | |
4605 | */ | |
4606 | ||
4607 | void | |
4608 | Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr) | |
4609 | { | |
4610 | sv_catsv_flags(dstr, sstr, SV_GMAGIC); | |
4611 | } | |
4612 | ||
954c1994 GS |
4613 | /* |
4614 | =for apidoc sv_catsv | |
4615 | ||
13e8c8e3 JH |
4616 | Concatenates the string from SV C<ssv> onto the end of the string in |
4617 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. Handles 'get' magic, but | |
4618 | not 'set' magic. See C<sv_catsv_mg>. | |
954c1994 | 4619 | |
8d6d96c1 HS |
4620 | =for apidoc sv_catsv_flags |
4621 | ||
4622 | Concatenates the string from SV C<ssv> onto the end of the string in | |
4623 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. If C<flags> has C<SV_GMAGIC> | |
4624 | bit set, will C<mg_get> on the SVs if appropriate, else not. C<sv_catsv> | |
4625 | and C<sv_catsv_nomg> are implemented in terms of this function. | |
4626 | ||
4627 | =cut */ | |
4628 | ||
ef50df4b | 4629 | void |
8d6d96c1 | 4630 | Perl_sv_catsv_flags(pTHX_ SV *dsv, register SV *ssv, I32 flags) |
79072805 | 4631 | { |
13e8c8e3 JH |
4632 | char *spv; |
4633 | STRLEN slen; | |
46199a12 | 4634 | if (!ssv) |
79072805 | 4635 | return; |
46199a12 | 4636 | if ((spv = SvPV(ssv, slen))) { |
4fd84b44 AD |
4637 | /* sutf8 and dutf8 were type bool, but under USE_ITHREADS, |
4638 | gcc version 2.95.2 20000220 (Debian GNU/Linux) for | |
8cf8f3d1 NIS |
4639 | Linux xxx 2.2.17 on sparc64 with gcc -O2, we erroneously |
4640 | get dutf8 = 0x20000000, (i.e. SVf_UTF8) even though | |
4fd84b44 AD |
4641 | dsv->sv_flags doesn't have that bit set. |
4642 | Andy Dougherty 12 Oct 2001 | |
4643 | */ | |
4644 | I32 sutf8 = DO_UTF8(ssv); | |
4645 | I32 dutf8; | |
13e8c8e3 | 4646 | |
8d6d96c1 HS |
4647 | if (SvGMAGICAL(dsv) && (flags & SV_GMAGIC)) |
4648 | mg_get(dsv); | |
4649 | dutf8 = DO_UTF8(dsv); | |
4650 | ||
4651 | if (dutf8 != sutf8) { | |
13e8c8e3 | 4652 | if (dutf8) { |
46199a12 | 4653 | /* Not modifying source SV, so taking a temporary copy. */ |
8d6d96c1 | 4654 | SV* csv = sv_2mortal(newSVpvn(spv, slen)); |
13e8c8e3 | 4655 | |
46199a12 | 4656 | sv_utf8_upgrade(csv); |
8d6d96c1 | 4657 | spv = SvPV(csv, slen); |
13e8c8e3 | 4658 | } |
8d6d96c1 HS |
4659 | else |
4660 | sv_utf8_upgrade_nomg(dsv); | |
e84ff256 | 4661 | } |
8d6d96c1 | 4662 | sv_catpvn_nomg(dsv, spv, slen); |
560a288e | 4663 | } |
79072805 LW |
4664 | } |
4665 | ||
954c1994 GS |
4666 | /* |
4667 | =for apidoc sv_catsv_mg | |
4668 | ||
4669 | Like C<sv_catsv>, but also handles 'set' magic. | |
4670 | ||
4671 | =cut | |
4672 | */ | |
4673 | ||
79072805 | 4674 | void |
46199a12 | 4675 | Perl_sv_catsv_mg(pTHX_ SV *dsv, register SV *ssv) |
ef50df4b | 4676 | { |
46199a12 JH |
4677 | sv_catsv(dsv,ssv); |
4678 | SvSETMAGIC(dsv); | |
ef50df4b GS |
4679 | } |
4680 | ||
954c1994 GS |
4681 | /* |
4682 | =for apidoc sv_catpv | |
4683 | ||
4684 | Concatenates the string onto the end of the string which is in the SV. | |
d5ce4a7c GA |
4685 | If the SV has the UTF8 status set, then the bytes appended should be |
4686 | valid UTF8. Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>. | |
954c1994 | 4687 | |
d5ce4a7c | 4688 | =cut */ |
954c1994 | 4689 | |
ef50df4b | 4690 | void |
0c981600 | 4691 | Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
4692 | { |
4693 | register STRLEN len; | |
463ee0b2 | 4694 | STRLEN tlen; |
748a9306 | 4695 | char *junk; |
79072805 | 4696 | |
0c981600 | 4697 | if (!ptr) |
79072805 | 4698 | return; |
748a9306 | 4699 | junk = SvPV_force(sv, tlen); |
0c981600 | 4700 | len = strlen(ptr); |
463ee0b2 | 4701 | SvGROW(sv, tlen + len + 1); |
0c981600 JH |
4702 | if (ptr == junk) |
4703 | ptr = SvPVX(sv); | |
4704 | Move(ptr,SvPVX(sv)+tlen,len+1,char); | |
79072805 | 4705 | SvCUR(sv) += len; |
d41ff1b8 | 4706 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4707 | SvTAINT(sv); |
79072805 LW |
4708 | } |
4709 | ||
954c1994 GS |
4710 | /* |
4711 | =for apidoc sv_catpv_mg | |
4712 | ||
4713 | Like C<sv_catpv>, but also handles 'set' magic. | |
4714 | ||
4715 | =cut | |
4716 | */ | |
4717 | ||
ef50df4b | 4718 | void |
0c981600 | 4719 | Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b | 4720 | { |
0c981600 | 4721 | sv_catpv(sv,ptr); |
ef50df4b GS |
4722 | SvSETMAGIC(sv); |
4723 | } | |
4724 | ||
645c22ef DM |
4725 | /* |
4726 | =for apidoc newSV | |
4727 | ||
4728 | Create a new null SV, or if len > 0, create a new empty SVt_PV type SV | |
4729 | with an initial PV allocation of len+1. Normally accessed via the C<NEWSV> | |
4730 | macro. | |
4731 | ||
4732 | =cut | |
4733 | */ | |
4734 | ||
79072805 | 4735 | SV * |
864dbfa3 | 4736 | Perl_newSV(pTHX_ STRLEN len) |
79072805 LW |
4737 | { |
4738 | register SV *sv; | |
1c846c1f | 4739 | |
4561caa4 | 4740 | new_SV(sv); |
79072805 LW |
4741 | if (len) { |
4742 | sv_upgrade(sv, SVt_PV); | |
4743 | SvGROW(sv, len + 1); | |
4744 | } | |
4745 | return sv; | |
4746 | } | |
954c1994 | 4747 | /* |
92110913 | 4748 | =for apidoc sv_magicext |
954c1994 | 4749 | |
68795e93 | 4750 | Adds magic to an SV, upgrading it if necessary. Applies the |
92110913 NIS |
4751 | supplied vtable and returns pointer to the magic added. |
4752 | ||
4753 | Note that sv_magicext will allow things that sv_magic will not. | |
68795e93 | 4754 | In particular you can add magic to SvREADONLY SVs and and more than |
92110913 | 4755 | one instance of the same 'how' |
645c22ef | 4756 | |
92110913 | 4757 | I C<namelen> is greater then zero then a savepvn() I<copy> of C<name> is stored, |
68795e93 NIS |
4758 | if C<namelen> is zero then C<name> is stored as-is and - as another special |
4759 | case - if C<(name && namelen == HEf_SVKEY)> then C<name> is assumed to contain | |
92110913 NIS |
4760 | an C<SV*> and has its REFCNT incremented |
4761 | ||
4762 | (This is now used as a subroutine by sv_magic.) | |
954c1994 GS |
4763 | |
4764 | =cut | |
4765 | */ | |
92110913 NIS |
4766 | MAGIC * |
4767 | Perl_sv_magicext(pTHX_ SV* sv, SV* obj, int how, MGVTBL *vtable, | |
4768 | const char* name, I32 namlen) | |
79072805 LW |
4769 | { |
4770 | MAGIC* mg; | |
68795e93 | 4771 | |
92110913 NIS |
4772 | if (SvTYPE(sv) < SVt_PVMG) { |
4773 | (void)SvUPGRADE(sv, SVt_PVMG); | |
463ee0b2 | 4774 | } |
79072805 LW |
4775 | Newz(702,mg, 1, MAGIC); |
4776 | mg->mg_moremagic = SvMAGIC(sv); | |
79072805 | 4777 | SvMAGIC(sv) = mg; |
75f9d97a | 4778 | |
18808301 | 4779 | /* Some magic sontains a reference loop, where the sv and object refer to |
bb03859b RS |
4780 | each other. To prevent a reference loop that would prevent such |
4781 | objects being freed, we look for such loops and if we find one we | |
87f0b213 JH |
4782 | avoid incrementing the object refcount. |
4783 | ||
4784 | Note we cannot do this to avoid self-tie loops as intervening RV must | |
b5ccf5f2 | 4785 | have its REFCNT incremented to keep it in existence. |
87f0b213 JH |
4786 | |
4787 | */ | |
14befaf4 DM |
4788 | if (!obj || obj == sv || |
4789 | how == PERL_MAGIC_arylen || | |
4790 | how == PERL_MAGIC_qr || | |
75f9d97a JH |
4791 | (SvTYPE(obj) == SVt_PVGV && |
4792 | (GvSV(obj) == sv || GvHV(obj) == (HV*)sv || GvAV(obj) == (AV*)sv || | |
4793 | GvCV(obj) == (CV*)sv || GvIOp(obj) == (IO*)sv || | |
2628be26 | 4794 | GvFORM(obj) == (CV*)sv))) |
75f9d97a | 4795 | { |
8990e307 | 4796 | mg->mg_obj = obj; |
75f9d97a | 4797 | } |
85e6fe83 | 4798 | else { |
8990e307 | 4799 | mg->mg_obj = SvREFCNT_inc(obj); |
85e6fe83 LW |
4800 | mg->mg_flags |= MGf_REFCOUNTED; |
4801 | } | |
b5ccf5f2 YST |
4802 | |
4803 | /* Normal self-ties simply pass a null object, and instead of | |
4804 | using mg_obj directly, use the SvTIED_obj macro to produce a | |
4805 | new RV as needed. For glob "self-ties", we are tieing the PVIO | |
4806 | with an RV obj pointing to the glob containing the PVIO. In | |
4807 | this case, to avoid a reference loop, we need to weaken the | |
4808 | reference. | |
4809 | */ | |
4810 | ||
4811 | if (how == PERL_MAGIC_tiedscalar && SvTYPE(sv) == SVt_PVIO && | |
4812 | obj && SvROK(obj) && GvIO(SvRV(obj)) == (IO*)sv) | |
4813 | { | |
4814 | sv_rvweaken(obj); | |
4815 | } | |
4816 | ||
79072805 | 4817 | mg->mg_type = how; |
565764a8 | 4818 | mg->mg_len = namlen; |
9cbac4c7 | 4819 | if (name) { |
92110913 | 4820 | if (namlen > 0) |
1edc1566 | 4821 | mg->mg_ptr = savepvn(name, namlen); |
c6ee37c5 | 4822 | else if (namlen == HEf_SVKEY) |
1edc1566 | 4823 | mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name); |
68795e93 | 4824 | else |
92110913 | 4825 | mg->mg_ptr = (char *) name; |
9cbac4c7 | 4826 | } |
92110913 | 4827 | mg->mg_virtual = vtable; |
68795e93 | 4828 | |
92110913 NIS |
4829 | mg_magical(sv); |
4830 | if (SvGMAGICAL(sv)) | |
4831 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
4832 | return mg; | |
4833 | } | |
4834 | ||
4835 | /* | |
4836 | =for apidoc sv_magic | |
1c846c1f | 4837 | |
92110913 NIS |
4838 | Adds magic to an SV. First upgrades C<sv> to type C<SVt_PVMG> if necessary, |
4839 | then adds a new magic item of type C<how> to the head of the magic list. | |
4840 | ||
4841 | =cut | |
4842 | */ | |
4843 | ||
4844 | void | |
4845 | Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen) | |
68795e93 | 4846 | { |
92110913 NIS |
4847 | MAGIC* mg; |
4848 | MGVTBL *vtable = 0; | |
4849 | ||
765f542d NC |
4850 | #ifdef PERL_COPY_ON_WRITE |
4851 | if (SvIsCOW(sv)) | |
4852 | sv_force_normal_flags(sv, 0); | |
4853 | #endif | |
92110913 NIS |
4854 | if (SvREADONLY(sv)) { |
4855 | if (PL_curcop != &PL_compiling | |
4856 | && how != PERL_MAGIC_regex_global | |
4857 | && how != PERL_MAGIC_bm | |
4858 | && how != PERL_MAGIC_fm | |
4859 | && how != PERL_MAGIC_sv | |
4860 | ) | |
4861 | { | |
4862 | Perl_croak(aTHX_ PL_no_modify); | |
4863 | } | |
4864 | } | |
4865 | if (SvMAGICAL(sv) || (how == PERL_MAGIC_taint && SvTYPE(sv) >= SVt_PVMG)) { | |
4866 | if (SvMAGIC(sv) && (mg = mg_find(sv, how))) { | |
68795e93 NIS |
4867 | /* sv_magic() refuses to add a magic of the same 'how' as an |
4868 | existing one | |
92110913 NIS |
4869 | */ |
4870 | if (how == PERL_MAGIC_taint) | |
4871 | mg->mg_len |= 1; | |
4872 | return; | |
4873 | } | |
4874 | } | |
68795e93 | 4875 | |
79072805 | 4876 | switch (how) { |
14befaf4 | 4877 | case PERL_MAGIC_sv: |
92110913 | 4878 | vtable = &PL_vtbl_sv; |
79072805 | 4879 | break; |
14befaf4 | 4880 | case PERL_MAGIC_overload: |
92110913 | 4881 | vtable = &PL_vtbl_amagic; |
a0d0e21e | 4882 | break; |
14befaf4 | 4883 | case PERL_MAGIC_overload_elem: |
92110913 | 4884 | vtable = &PL_vtbl_amagicelem; |
a0d0e21e | 4885 | break; |
14befaf4 | 4886 | case PERL_MAGIC_overload_table: |
92110913 | 4887 | vtable = &PL_vtbl_ovrld; |
a0d0e21e | 4888 | break; |
14befaf4 | 4889 | case PERL_MAGIC_bm: |
92110913 | 4890 | vtable = &PL_vtbl_bm; |
79072805 | 4891 | break; |
14befaf4 | 4892 | case PERL_MAGIC_regdata: |
92110913 | 4893 | vtable = &PL_vtbl_regdata; |
6cef1e77 | 4894 | break; |
14befaf4 | 4895 | case PERL_MAGIC_regdatum: |
92110913 | 4896 | vtable = &PL_vtbl_regdatum; |
6cef1e77 | 4897 | break; |
14befaf4 | 4898 | case PERL_MAGIC_env: |
92110913 | 4899 | vtable = &PL_vtbl_env; |
79072805 | 4900 | break; |
14befaf4 | 4901 | case PERL_MAGIC_fm: |
92110913 | 4902 | vtable = &PL_vtbl_fm; |
55497cff | 4903 | break; |
14befaf4 | 4904 | case PERL_MAGIC_envelem: |
92110913 | 4905 | vtable = &PL_vtbl_envelem; |
79072805 | 4906 | break; |
14befaf4 | 4907 | case PERL_MAGIC_regex_global: |
92110913 | 4908 | vtable = &PL_vtbl_mglob; |
93a17b20 | 4909 | break; |
14befaf4 | 4910 | case PERL_MAGIC_isa: |
92110913 | 4911 | vtable = &PL_vtbl_isa; |
463ee0b2 | 4912 | break; |
14befaf4 | 4913 | case PERL_MAGIC_isaelem: |
92110913 | 4914 | vtable = &PL_vtbl_isaelem; |
463ee0b2 | 4915 | break; |
14befaf4 | 4916 | case PERL_MAGIC_nkeys: |
92110913 | 4917 | vtable = &PL_vtbl_nkeys; |
16660edb | 4918 | break; |
14befaf4 | 4919 | case PERL_MAGIC_dbfile: |
92110913 | 4920 | vtable = 0; |
93a17b20 | 4921 | break; |
14befaf4 | 4922 | case PERL_MAGIC_dbline: |
92110913 | 4923 | vtable = &PL_vtbl_dbline; |
79072805 | 4924 | break; |
36477c24 | 4925 | #ifdef USE_LOCALE_COLLATE |
14befaf4 | 4926 | case PERL_MAGIC_collxfrm: |
92110913 | 4927 | vtable = &PL_vtbl_collxfrm; |
bbce6d69 | 4928 | break; |
36477c24 | 4929 | #endif /* USE_LOCALE_COLLATE */ |
14befaf4 | 4930 | case PERL_MAGIC_tied: |
92110913 | 4931 | vtable = &PL_vtbl_pack; |
463ee0b2 | 4932 | break; |
14befaf4 DM |
4933 | case PERL_MAGIC_tiedelem: |
4934 | case PERL_MAGIC_tiedscalar: | |
92110913 | 4935 | vtable = &PL_vtbl_packelem; |
463ee0b2 | 4936 | break; |
14befaf4 | 4937 | case PERL_MAGIC_qr: |
92110913 | 4938 | vtable = &PL_vtbl_regexp; |
c277df42 | 4939 | break; |
14befaf4 | 4940 | case PERL_MAGIC_sig: |
92110913 | 4941 | vtable = &PL_vtbl_sig; |
79072805 | 4942 | break; |
14befaf4 | 4943 | case PERL_MAGIC_sigelem: |
92110913 | 4944 | vtable = &PL_vtbl_sigelem; |
79072805 | 4945 | break; |
14befaf4 | 4946 | case PERL_MAGIC_taint: |
92110913 | 4947 | vtable = &PL_vtbl_taint; |
463ee0b2 | 4948 | break; |
14befaf4 | 4949 | case PERL_MAGIC_uvar: |
92110913 | 4950 | vtable = &PL_vtbl_uvar; |
79072805 | 4951 | break; |
14befaf4 | 4952 | case PERL_MAGIC_vec: |
92110913 | 4953 | vtable = &PL_vtbl_vec; |
79072805 | 4954 | break; |
ece467f9 JP |
4955 | case PERL_MAGIC_vstring: |
4956 | vtable = 0; | |
4957 | break; | |
7e8c5dac HS |
4958 | case PERL_MAGIC_utf8: |
4959 | vtable = &PL_vtbl_utf8; | |
4960 | break; | |
14befaf4 | 4961 | case PERL_MAGIC_substr: |
92110913 | 4962 | vtable = &PL_vtbl_substr; |
79072805 | 4963 | break; |
14befaf4 | 4964 | case PERL_MAGIC_defelem: |
92110913 | 4965 | vtable = &PL_vtbl_defelem; |
5f05dabc | 4966 | break; |
14befaf4 | 4967 | case PERL_MAGIC_glob: |
92110913 | 4968 | vtable = &PL_vtbl_glob; |
79072805 | 4969 | break; |
14befaf4 | 4970 | case PERL_MAGIC_arylen: |
92110913 | 4971 | vtable = &PL_vtbl_arylen; |
79072805 | 4972 | break; |
14befaf4 | 4973 | case PERL_MAGIC_pos: |
92110913 | 4974 | vtable = &PL_vtbl_pos; |
a0d0e21e | 4975 | break; |
14befaf4 | 4976 | case PERL_MAGIC_backref: |
92110913 | 4977 | vtable = &PL_vtbl_backref; |
810b8aa5 | 4978 | break; |
14befaf4 DM |
4979 | case PERL_MAGIC_ext: |
4980 | /* Reserved for use by extensions not perl internals. */ | |
4633a7c4 LW |
4981 | /* Useful for attaching extension internal data to perl vars. */ |
4982 | /* Note that multiple extensions may clash if magical scalars */ | |
4983 | /* etc holding private data from one are passed to another. */ | |
a0d0e21e | 4984 | break; |
79072805 | 4985 | default: |
14befaf4 | 4986 | Perl_croak(aTHX_ "Don't know how to handle magic of type \\%o", how); |
463ee0b2 | 4987 | } |
68795e93 | 4988 | |
92110913 NIS |
4989 | /* Rest of work is done else where */ |
4990 | mg = sv_magicext(sv,obj,how,vtable,name,namlen); | |
68795e93 | 4991 | |
92110913 NIS |
4992 | switch (how) { |
4993 | case PERL_MAGIC_taint: | |
4994 | mg->mg_len = 1; | |
4995 | break; | |
4996 | case PERL_MAGIC_ext: | |
4997 | case PERL_MAGIC_dbfile: | |
4998 | SvRMAGICAL_on(sv); | |
4999 | break; | |
5000 | } | |
463ee0b2 LW |
5001 | } |
5002 | ||
c461cf8f JH |
5003 | /* |
5004 | =for apidoc sv_unmagic | |
5005 | ||
645c22ef | 5006 | Removes all magic of type C<type> from an SV. |
c461cf8f JH |
5007 | |
5008 | =cut | |
5009 | */ | |
5010 | ||
463ee0b2 | 5011 | int |
864dbfa3 | 5012 | Perl_sv_unmagic(pTHX_ SV *sv, int type) |
463ee0b2 LW |
5013 | { |
5014 | MAGIC* mg; | |
5015 | MAGIC** mgp; | |
91bba347 | 5016 | if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv)) |
463ee0b2 LW |
5017 | return 0; |
5018 | mgp = &SvMAGIC(sv); | |
5019 | for (mg = *mgp; mg; mg = *mgp) { | |
5020 | if (mg->mg_type == type) { | |
5021 | MGVTBL* vtbl = mg->mg_virtual; | |
5022 | *mgp = mg->mg_moremagic; | |
1d7c1841 | 5023 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 | 5024 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
14befaf4 | 5025 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
92110913 | 5026 | if (mg->mg_len > 0) |
1edc1566 | 5027 | Safefree(mg->mg_ptr); |
565764a8 | 5028 | else if (mg->mg_len == HEf_SVKEY) |
1edc1566 | 5029 | SvREFCNT_dec((SV*)mg->mg_ptr); |
7e8c5dac HS |
5030 | else if (mg->mg_type == PERL_MAGIC_utf8 && mg->mg_ptr) |
5031 | Safefree(mg->mg_ptr); | |
9cbac4c7 | 5032 | } |
a0d0e21e LW |
5033 | if (mg->mg_flags & MGf_REFCOUNTED) |
5034 | SvREFCNT_dec(mg->mg_obj); | |
463ee0b2 LW |
5035 | Safefree(mg); |
5036 | } | |
5037 | else | |
5038 | mgp = &mg->mg_moremagic; | |
79072805 | 5039 | } |
91bba347 | 5040 | if (!SvMAGIC(sv)) { |
463ee0b2 | 5041 | SvMAGICAL_off(sv); |
06759ea0 | 5042 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
463ee0b2 LW |
5043 | } |
5044 | ||
5045 | return 0; | |
79072805 LW |
5046 | } |
5047 | ||
c461cf8f JH |
5048 | /* |
5049 | =for apidoc sv_rvweaken | |
5050 | ||
645c22ef DM |
5051 | Weaken a reference: set the C<SvWEAKREF> flag on this RV; give the |
5052 | referred-to SV C<PERL_MAGIC_backref> magic if it hasn't already; and | |
5053 | push a back-reference to this RV onto the array of backreferences | |
5054 | associated with that magic. | |
c461cf8f JH |
5055 | |
5056 | =cut | |
5057 | */ | |
5058 | ||
810b8aa5 | 5059 | SV * |
864dbfa3 | 5060 | Perl_sv_rvweaken(pTHX_ SV *sv) |
810b8aa5 GS |
5061 | { |
5062 | SV *tsv; | |
5063 | if (!SvOK(sv)) /* let undefs pass */ | |
5064 | return sv; | |
5065 | if (!SvROK(sv)) | |
cea2e8a9 | 5066 | Perl_croak(aTHX_ "Can't weaken a nonreference"); |
810b8aa5 | 5067 | else if (SvWEAKREF(sv)) { |
810b8aa5 | 5068 | if (ckWARN(WARN_MISC)) |
9014280d | 5069 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Reference is already weak"); |
810b8aa5 GS |
5070 | return sv; |
5071 | } | |
5072 | tsv = SvRV(sv); | |
5073 | sv_add_backref(tsv, sv); | |
5074 | SvWEAKREF_on(sv); | |
1c846c1f | 5075 | SvREFCNT_dec(tsv); |
810b8aa5 GS |
5076 | return sv; |
5077 | } | |
5078 | ||
645c22ef DM |
5079 | /* Give tsv backref magic if it hasn't already got it, then push a |
5080 | * back-reference to sv onto the array associated with the backref magic. | |
5081 | */ | |
5082 | ||
810b8aa5 | 5083 | STATIC void |
cea2e8a9 | 5084 | S_sv_add_backref(pTHX_ SV *tsv, SV *sv) |
810b8aa5 GS |
5085 | { |
5086 | AV *av; | |
5087 | MAGIC *mg; | |
14befaf4 | 5088 | if (SvMAGICAL(tsv) && (mg = mg_find(tsv, PERL_MAGIC_backref))) |
810b8aa5 GS |
5089 | av = (AV*)mg->mg_obj; |
5090 | else { | |
5091 | av = newAV(); | |
14befaf4 | 5092 | sv_magic(tsv, (SV*)av, PERL_MAGIC_backref, NULL, 0); |
810b8aa5 GS |
5093 | SvREFCNT_dec(av); /* for sv_magic */ |
5094 | } | |
d91d49e8 MM |
5095 | if (AvFILLp(av) >= AvMAX(av)) { |
5096 | SV **svp = AvARRAY(av); | |
5097 | I32 i = AvFILLp(av); | |
5098 | while (i >= 0) { | |
5099 | if (svp[i] == &PL_sv_undef) { | |
5100 | svp[i] = sv; /* reuse the slot */ | |
5101 | return; | |
5102 | } | |
5103 | i--; | |
5104 | } | |
5105 | av_extend(av, AvFILLp(av)+1); | |
5106 | } | |
5107 | AvARRAY(av)[++AvFILLp(av)] = sv; /* av_push() */ | |
810b8aa5 GS |
5108 | } |
5109 | ||
645c22ef DM |
5110 | /* delete a back-reference to ourselves from the backref magic associated |
5111 | * with the SV we point to. | |
5112 | */ | |
5113 | ||
1c846c1f | 5114 | STATIC void |
cea2e8a9 | 5115 | S_sv_del_backref(pTHX_ SV *sv) |
810b8aa5 GS |
5116 | { |
5117 | AV *av; | |
5118 | SV **svp; | |
5119 | I32 i; | |
5120 | SV *tsv = SvRV(sv); | |
c04a4dfe | 5121 | MAGIC *mg = NULL; |
14befaf4 | 5122 | if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, PERL_MAGIC_backref))) |
cea2e8a9 | 5123 | Perl_croak(aTHX_ "panic: del_backref"); |
810b8aa5 GS |
5124 | av = (AV *)mg->mg_obj; |
5125 | svp = AvARRAY(av); | |
5126 | i = AvFILLp(av); | |
5127 | while (i >= 0) { | |
5128 | if (svp[i] == sv) { | |
5129 | svp[i] = &PL_sv_undef; /* XXX */ | |
5130 | } | |
5131 | i--; | |
5132 | } | |
5133 | } | |
5134 | ||
954c1994 GS |
5135 | /* |
5136 | =for apidoc sv_insert | |
5137 | ||
5138 | Inserts a string at the specified offset/length within the SV. Similar to | |
5139 | the Perl substr() function. | |
5140 | ||
5141 | =cut | |
5142 | */ | |
5143 | ||
79072805 | 5144 | void |
864dbfa3 | 5145 | Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen) |
79072805 LW |
5146 | { |
5147 | register char *big; | |
5148 | register char *mid; | |
5149 | register char *midend; | |
5150 | register char *bigend; | |
5151 | register I32 i; | |
6ff81951 | 5152 | STRLEN curlen; |
1c846c1f | 5153 | |
79072805 | 5154 | |
8990e307 | 5155 | if (!bigstr) |
cea2e8a9 | 5156 | Perl_croak(aTHX_ "Can't modify non-existent substring"); |
6ff81951 | 5157 | SvPV_force(bigstr, curlen); |
60fa28ff | 5158 | (void)SvPOK_only_UTF8(bigstr); |
6ff81951 GS |
5159 | if (offset + len > curlen) { |
5160 | SvGROW(bigstr, offset+len+1); | |
5161 | Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char); | |
5162 | SvCUR_set(bigstr, offset+len); | |
5163 | } | |
79072805 | 5164 | |
69b47968 | 5165 | SvTAINT(bigstr); |
79072805 LW |
5166 | i = littlelen - len; |
5167 | if (i > 0) { /* string might grow */ | |
a0d0e21e | 5168 | big = SvGROW(bigstr, SvCUR(bigstr) + i + 1); |
79072805 LW |
5169 | mid = big + offset + len; |
5170 | midend = bigend = big + SvCUR(bigstr); | |
5171 | bigend += i; | |
5172 | *bigend = '\0'; | |
5173 | while (midend > mid) /* shove everything down */ | |
5174 | *--bigend = *--midend; | |
5175 | Move(little,big+offset,littlelen,char); | |
5176 | SvCUR(bigstr) += i; | |
5177 | SvSETMAGIC(bigstr); | |
5178 | return; | |
5179 | } | |
5180 | else if (i == 0) { | |
463ee0b2 | 5181 | Move(little,SvPVX(bigstr)+offset,len,char); |
79072805 LW |
5182 | SvSETMAGIC(bigstr); |
5183 | return; | |
5184 | } | |
5185 | ||
463ee0b2 | 5186 | big = SvPVX(bigstr); |
79072805 LW |
5187 | mid = big + offset; |
5188 | midend = mid + len; | |
5189 | bigend = big + SvCUR(bigstr); | |
5190 | ||
5191 | if (midend > bigend) | |
cea2e8a9 | 5192 | Perl_croak(aTHX_ "panic: sv_insert"); |
79072805 LW |
5193 | |
5194 | if (mid - big > bigend - midend) { /* faster to shorten from end */ | |
5195 | if (littlelen) { | |
5196 | Move(little, mid, littlelen,char); | |
5197 | mid += littlelen; | |
5198 | } | |
5199 | i = bigend - midend; | |
5200 | if (i > 0) { | |
5201 | Move(midend, mid, i,char); | |
5202 | mid += i; | |
5203 | } | |
5204 | *mid = '\0'; | |
5205 | SvCUR_set(bigstr, mid - big); | |
5206 | } | |
5207 | /*SUPPRESS 560*/ | |
155aba94 | 5208 | else if ((i = mid - big)) { /* faster from front */ |
79072805 LW |
5209 | midend -= littlelen; |
5210 | mid = midend; | |
5211 | sv_chop(bigstr,midend-i); | |
5212 | big += i; | |
5213 | while (i--) | |
5214 | *--midend = *--big; | |
5215 | if (littlelen) | |
5216 | Move(little, mid, littlelen,char); | |
5217 | } | |
5218 | else if (littlelen) { | |
5219 | midend -= littlelen; | |
5220 | sv_chop(bigstr,midend); | |
5221 | Move(little,midend,littlelen,char); | |
5222 | } | |
5223 | else { | |
5224 | sv_chop(bigstr,midend); | |
5225 | } | |
5226 | SvSETMAGIC(bigstr); | |
5227 | } | |
5228 | ||
c461cf8f JH |
5229 | /* |
5230 | =for apidoc sv_replace | |
5231 | ||
5232 | Make the first argument a copy of the second, then delete the original. | |
645c22ef DM |
5233 | The target SV physically takes over ownership of the body of the source SV |
5234 | and inherits its flags; however, the target keeps any magic it owns, | |
5235 | and any magic in the source is discarded. | |
ff276b08 | 5236 | Note that this is a rather specialist SV copying operation; most of the |
645c22ef | 5237 | time you'll want to use C<sv_setsv> or one of its many macro front-ends. |
c461cf8f JH |
5238 | |
5239 | =cut | |
5240 | */ | |
79072805 LW |
5241 | |
5242 | void | |
864dbfa3 | 5243 | Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv) |
79072805 LW |
5244 | { |
5245 | U32 refcnt = SvREFCNT(sv); | |
765f542d | 5246 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
0453d815 | 5247 | if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL)) |
9014280d | 5248 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "Reference miscount in sv_replace()"); |
93a17b20 | 5249 | if (SvMAGICAL(sv)) { |
a0d0e21e LW |
5250 | if (SvMAGICAL(nsv)) |
5251 | mg_free(nsv); | |
5252 | else | |
5253 | sv_upgrade(nsv, SVt_PVMG); | |
93a17b20 | 5254 | SvMAGIC(nsv) = SvMAGIC(sv); |
a0d0e21e | 5255 | SvFLAGS(nsv) |= SvMAGICAL(sv); |
93a17b20 LW |
5256 | SvMAGICAL_off(sv); |
5257 | SvMAGIC(sv) = 0; | |
5258 | } | |
79072805 LW |
5259 | SvREFCNT(sv) = 0; |
5260 | sv_clear(sv); | |
477f5d66 | 5261 | assert(!SvREFCNT(sv)); |
79072805 | 5262 | StructCopy(nsv,sv,SV); |
d3d0e6f1 NC |
5263 | #ifdef PERL_COPY_ON_WRITE |
5264 | if (SvIsCOW_normal(nsv)) { | |
5265 | /* We need to follow the pointers around the loop to make the | |
5266 | previous SV point to sv, rather than nsv. */ | |
5267 | SV *next; | |
5268 | SV *current = nsv; | |
5269 | while ((next = SV_COW_NEXT_SV(current)) != nsv) { | |
5270 | assert(next); | |
5271 | current = next; | |
5272 | assert(SvPVX(current) == SvPVX(nsv)); | |
5273 | } | |
5274 | /* Make the SV before us point to the SV after us. */ | |
5275 | if (DEBUG_C_TEST) { | |
5276 | PerlIO_printf(Perl_debug_log, "previous is\n"); | |
5277 | sv_dump(current); | |
a29f6d03 NC |
5278 | PerlIO_printf(Perl_debug_log, |
5279 | "move it from 0x%"UVxf" to 0x%"UVxf"\n", | |
d3d0e6f1 NC |
5280 | (UV) SV_COW_NEXT_SV(current), (UV) sv); |
5281 | } | |
a29f6d03 | 5282 | SV_COW_NEXT_SV_SET(current, sv); |
d3d0e6f1 NC |
5283 | } |
5284 | #endif | |
79072805 | 5285 | SvREFCNT(sv) = refcnt; |
1edc1566 | 5286 | SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */ |
463ee0b2 | 5287 | del_SV(nsv); |
79072805 LW |
5288 | } |
5289 | ||
c461cf8f JH |
5290 | /* |
5291 | =for apidoc sv_clear | |
5292 | ||
645c22ef DM |
5293 | Clear an SV: call any destructors, free up any memory used by the body, |
5294 | and free the body itself. The SV's head is I<not> freed, although | |
5295 | its type is set to all 1's so that it won't inadvertently be assumed | |
5296 | to be live during global destruction etc. | |
5297 | This function should only be called when REFCNT is zero. Most of the time | |
5298 | you'll want to call C<sv_free()> (or its macro wrapper C<SvREFCNT_dec>) | |
5299 | instead. | |
c461cf8f JH |
5300 | |
5301 | =cut | |
5302 | */ | |
5303 | ||
79072805 | 5304 | void |
864dbfa3 | 5305 | Perl_sv_clear(pTHX_ register SV *sv) |
79072805 | 5306 | { |
ec12f114 | 5307 | HV* stash; |
79072805 LW |
5308 | assert(sv); |
5309 | assert(SvREFCNT(sv) == 0); | |
5310 | ||
ed6116ce | 5311 | if (SvOBJECT(sv)) { |
3280af22 | 5312 | if (PL_defstash) { /* Still have a symbol table? */ |
39644a26 | 5313 | dSP; |
32251b26 | 5314 | CV* destructor; |
a0d0e21e | 5315 | |
5cc433a6 | 5316 | |
8ebc5c01 | 5317 | |
d460ef45 | 5318 | do { |
4e8e7886 | 5319 | stash = SvSTASH(sv); |
32251b26 | 5320 | destructor = StashHANDLER(stash,DESTROY); |
4e8e7886 | 5321 | if (destructor) { |
5cc433a6 AB |
5322 | SV* tmpref = newRV(sv); |
5323 | SvREADONLY_on(tmpref); /* DESTROY() could be naughty */ | |
4e8e7886 | 5324 | ENTER; |
e788e7d3 | 5325 | PUSHSTACKi(PERLSI_DESTROY); |
4e8e7886 GS |
5326 | EXTEND(SP, 2); |
5327 | PUSHMARK(SP); | |
5cc433a6 | 5328 | PUSHs(tmpref); |
4e8e7886 | 5329 | PUTBACK; |
44389ee9 | 5330 | call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR|G_VOID); |
5cc433a6 AB |
5331 | |
5332 | ||
d3acc0f7 | 5333 | POPSTACK; |
3095d977 | 5334 | SPAGAIN; |
4e8e7886 | 5335 | LEAVE; |
5cc433a6 AB |
5336 | if(SvREFCNT(tmpref) < 2) { |
5337 | /* tmpref is not kept alive! */ | |
5338 | SvREFCNT(sv)--; | |
5339 | SvRV(tmpref) = 0; | |
5340 | SvROK_off(tmpref); | |
5341 | } | |
5342 | SvREFCNT_dec(tmpref); | |
4e8e7886 GS |
5343 | } |
5344 | } while (SvOBJECT(sv) && SvSTASH(sv) != stash); | |
8ebc5c01 | 5345 | |
6f44e0a4 JP |
5346 | |
5347 | if (SvREFCNT(sv)) { | |
5348 | if (PL_in_clean_objs) | |
cea2e8a9 | 5349 | Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'", |
6f44e0a4 JP |
5350 | HvNAME(stash)); |
5351 | /* DESTROY gave object new lease on life */ | |
5352 | return; | |
5353 | } | |
a0d0e21e | 5354 | } |
4e8e7886 | 5355 | |
a0d0e21e | 5356 | if (SvOBJECT(sv)) { |
4e8e7886 | 5357 | SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */ |
a0d0e21e LW |
5358 | SvOBJECT_off(sv); /* Curse the object. */ |
5359 | if (SvTYPE(sv) != SVt_PVIO) | |
3280af22 | 5360 | --PL_sv_objcount; /* XXX Might want something more general */ |
a0d0e21e | 5361 | } |
463ee0b2 | 5362 | } |
524189f1 JH |
5363 | if (SvTYPE(sv) >= SVt_PVMG) { |
5364 | if (SvMAGIC(sv)) | |
5365 | mg_free(sv); | |
5366 | if (SvFLAGS(sv) & SVpad_TYPED) | |
5367 | SvREFCNT_dec(SvSTASH(sv)); | |
5368 | } | |
ec12f114 | 5369 | stash = NULL; |
79072805 | 5370 | switch (SvTYPE(sv)) { |
8990e307 | 5371 | case SVt_PVIO: |
df0bd2f4 GS |
5372 | if (IoIFP(sv) && |
5373 | IoIFP(sv) != PerlIO_stdin() && | |
5f05dabc | 5374 | IoIFP(sv) != PerlIO_stdout() && |
5375 | IoIFP(sv) != PerlIO_stderr()) | |
93578b34 | 5376 | { |
f2b5be74 | 5377 | io_close((IO*)sv, FALSE); |
93578b34 | 5378 | } |
1d7c1841 | 5379 | if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP)) |
1236053a | 5380 | PerlDir_close(IoDIRP(sv)); |
1d7c1841 | 5381 | IoDIRP(sv) = (DIR*)NULL; |
8990e307 LW |
5382 | Safefree(IoTOP_NAME(sv)); |
5383 | Safefree(IoFMT_NAME(sv)); | |
5384 | Safefree(IoBOTTOM_NAME(sv)); | |
a0d0e21e | 5385 | /* FALL THROUGH */ |
79072805 | 5386 | case SVt_PVBM: |
a0d0e21e | 5387 | goto freescalar; |
79072805 | 5388 | case SVt_PVCV: |
748a9306 | 5389 | case SVt_PVFM: |
85e6fe83 | 5390 | cv_undef((CV*)sv); |
a0d0e21e | 5391 | goto freescalar; |
79072805 | 5392 | case SVt_PVHV: |
85e6fe83 | 5393 | hv_undef((HV*)sv); |
a0d0e21e | 5394 | break; |
79072805 | 5395 | case SVt_PVAV: |
85e6fe83 | 5396 | av_undef((AV*)sv); |
a0d0e21e | 5397 | break; |
02270b4e | 5398 | case SVt_PVLV: |
dd28f7bb DM |
5399 | if (LvTYPE(sv) == 'T') { /* for tie: return HE to pool */ |
5400 | SvREFCNT_dec(HeKEY_sv((HE*)LvTARG(sv))); | |
5401 | HeNEXT((HE*)LvTARG(sv)) = PL_hv_fetch_ent_mh; | |
5402 | PL_hv_fetch_ent_mh = (HE*)LvTARG(sv); | |
5403 | } | |
5404 | else if (LvTYPE(sv) != 't') /* unless tie: unrefcnted fake SV** */ | |
5405 | SvREFCNT_dec(LvTARG(sv)); | |
02270b4e | 5406 | goto freescalar; |
a0d0e21e | 5407 | case SVt_PVGV: |
1edc1566 | 5408 | gp_free((GV*)sv); |
a0d0e21e | 5409 | Safefree(GvNAME(sv)); |
ec12f114 JPC |
5410 | /* cannot decrease stash refcount yet, as we might recursively delete |
5411 | ourselves when the refcnt drops to zero. Delay SvREFCNT_dec | |
5412 | of stash until current sv is completely gone. | |
5413 | -- JohnPC, 27 Mar 1998 */ | |
5414 | stash = GvSTASH(sv); | |
a0d0e21e | 5415 | /* FALL THROUGH */ |
79072805 | 5416 | case SVt_PVMG: |
79072805 LW |
5417 | case SVt_PVNV: |
5418 | case SVt_PVIV: | |
a0d0e21e LW |
5419 | freescalar: |
5420 | (void)SvOOK_off(sv); | |
79072805 LW |
5421 | /* FALL THROUGH */ |
5422 | case SVt_PV: | |
a0d0e21e | 5423 | case SVt_RV: |
810b8aa5 GS |
5424 | if (SvROK(sv)) { |
5425 | if (SvWEAKREF(sv)) | |
5426 | sv_del_backref(sv); | |
5427 | else | |
5428 | SvREFCNT_dec(SvRV(sv)); | |
5429 | } | |
765f542d NC |
5430 | #ifdef PERL_COPY_ON_WRITE |
5431 | else if (SvPVX(sv)) { | |
5432 | if (SvIsCOW(sv)) { | |
5433 | /* I believe I need to grab the global SV mutex here and | |
5434 | then recheck the COW status. */ | |
46187eeb NC |
5435 | if (DEBUG_C_TEST) { |
5436 | PerlIO_printf(Perl_debug_log, "Copy on write: clear\n"); | |
e419cbc5 | 5437 | sv_dump(sv); |
46187eeb | 5438 | } |
e419cbc5 | 5439 | sv_release_COW(sv, SvPVX(sv), SvCUR(sv), SvLEN(sv), |
765f542d NC |
5440 | SvUVX(sv), SV_COW_NEXT_SV(sv)); |
5441 | /* And drop it here. */ | |
5442 | SvFAKE_off(sv); | |
5443 | } else if (SvLEN(sv)) { | |
5444 | Safefree(SvPVX(sv)); | |
5445 | } | |
5446 | } | |
5447 | #else | |
1edc1566 | 5448 | else if (SvPVX(sv) && SvLEN(sv)) |
463ee0b2 | 5449 | Safefree(SvPVX(sv)); |
1c846c1f | 5450 | else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) { |
25716404 GS |
5451 | unsharepvn(SvPVX(sv), |
5452 | SvUTF8(sv) ? -(I32)SvCUR(sv) : SvCUR(sv), | |
5453 | SvUVX(sv)); | |
1c846c1f NIS |
5454 | SvFAKE_off(sv); |
5455 | } | |
765f542d | 5456 | #endif |
79072805 | 5457 | break; |
a0d0e21e | 5458 | /* |
79072805 | 5459 | case SVt_NV: |
79072805 | 5460 | case SVt_IV: |
79072805 LW |
5461 | case SVt_NULL: |
5462 | break; | |
a0d0e21e | 5463 | */ |
79072805 LW |
5464 | } |
5465 | ||
5466 | switch (SvTYPE(sv)) { | |
5467 | case SVt_NULL: | |
5468 | break; | |
79072805 LW |
5469 | case SVt_IV: |
5470 | del_XIV(SvANY(sv)); | |
5471 | break; | |
5472 | case SVt_NV: | |
5473 | del_XNV(SvANY(sv)); | |
5474 | break; | |
ed6116ce LW |
5475 | case SVt_RV: |
5476 | del_XRV(SvANY(sv)); | |
5477 | break; | |
79072805 LW |
5478 | case SVt_PV: |
5479 | del_XPV(SvANY(sv)); | |
5480 | break; | |
5481 | case SVt_PVIV: | |
5482 | del_XPVIV(SvANY(sv)); | |
5483 | break; | |
5484 | case SVt_PVNV: | |
5485 | del_XPVNV(SvANY(sv)); | |
5486 | break; | |
5487 | case SVt_PVMG: | |
5488 | del_XPVMG(SvANY(sv)); | |
5489 | break; | |
5490 | case SVt_PVLV: | |
5491 | del_XPVLV(SvANY(sv)); | |
5492 | break; | |
5493 | case SVt_PVAV: | |
5494 | del_XPVAV(SvANY(sv)); | |
5495 | break; | |
5496 | case SVt_PVHV: | |
5497 | del_XPVHV(SvANY(sv)); | |
5498 | break; | |
5499 | case SVt_PVCV: | |
5500 | del_XPVCV(SvANY(sv)); | |
5501 | break; | |
5502 | case SVt_PVGV: | |
5503 | del_XPVGV(SvANY(sv)); | |
ec12f114 JPC |
5504 | /* code duplication for increased performance. */ |
5505 | SvFLAGS(sv) &= SVf_BREAK; | |
5506 | SvFLAGS(sv) |= SVTYPEMASK; | |
5507 | /* decrease refcount of the stash that owns this GV, if any */ | |
5508 | if (stash) | |
5509 | SvREFCNT_dec(stash); | |
5510 | return; /* not break, SvFLAGS reset already happened */ | |
79072805 LW |
5511 | case SVt_PVBM: |
5512 | del_XPVBM(SvANY(sv)); | |
5513 | break; | |
5514 | case SVt_PVFM: | |
5515 | del_XPVFM(SvANY(sv)); | |
5516 | break; | |
8990e307 LW |
5517 | case SVt_PVIO: |
5518 | del_XPVIO(SvANY(sv)); | |
5519 | break; | |
79072805 | 5520 | } |
a0d0e21e | 5521 | SvFLAGS(sv) &= SVf_BREAK; |
8990e307 | 5522 | SvFLAGS(sv) |= SVTYPEMASK; |
79072805 LW |
5523 | } |
5524 | ||
645c22ef DM |
5525 | /* |
5526 | =for apidoc sv_newref | |
5527 | ||
5528 | Increment an SV's reference count. Use the C<SvREFCNT_inc()> wrapper | |
5529 | instead. | |
5530 | ||
5531 | =cut | |
5532 | */ | |
5533 | ||
79072805 | 5534 | SV * |
864dbfa3 | 5535 | Perl_sv_newref(pTHX_ SV *sv) |
79072805 | 5536 | { |
463ee0b2 | 5537 | if (sv) |
4db098f4 | 5538 | (SvREFCNT(sv))++; |
79072805 LW |
5539 | return sv; |
5540 | } | |
5541 | ||
c461cf8f JH |
5542 | /* |
5543 | =for apidoc sv_free | |
5544 | ||
645c22ef DM |
5545 | Decrement an SV's reference count, and if it drops to zero, call |
5546 | C<sv_clear> to invoke destructors and free up any memory used by | |
5547 | the body; finally, deallocate the SV's head itself. | |
5548 | Normally called via a wrapper macro C<SvREFCNT_dec>. | |
c461cf8f JH |
5549 | |
5550 | =cut | |
5551 | */ | |
5552 | ||
79072805 | 5553 | void |
864dbfa3 | 5554 | Perl_sv_free(pTHX_ SV *sv) |
79072805 LW |
5555 | { |
5556 | if (!sv) | |
5557 | return; | |
a0d0e21e LW |
5558 | if (SvREFCNT(sv) == 0) { |
5559 | if (SvFLAGS(sv) & SVf_BREAK) | |
645c22ef DM |
5560 | /* this SV's refcnt has been artificially decremented to |
5561 | * trigger cleanup */ | |
a0d0e21e | 5562 | return; |
3280af22 | 5563 | if (PL_in_clean_all) /* All is fair */ |
1edc1566 | 5564 | return; |
d689ffdd JP |
5565 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
5566 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
5567 | SvREFCNT(sv) = (~(U32)0)/2; | |
5568 | return; | |
5569 | } | |
0453d815 | 5570 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 5571 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "Attempt to free unreferenced scalar"); |
79072805 LW |
5572 | return; |
5573 | } | |
4db098f4 | 5574 | if (--(SvREFCNT(sv)) > 0) |
8990e307 | 5575 | return; |
8c4d3c90 NC |
5576 | Perl_sv_free2(aTHX_ sv); |
5577 | } | |
5578 | ||
5579 | void | |
5580 | Perl_sv_free2(pTHX_ SV *sv) | |
5581 | { | |
463ee0b2 LW |
5582 | #ifdef DEBUGGING |
5583 | if (SvTEMP(sv)) { | |
0453d815 | 5584 | if (ckWARN_d(WARN_DEBUGGING)) |
9014280d | 5585 | Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), |
1d7c1841 GS |
5586 | "Attempt to free temp prematurely: SV 0x%"UVxf, |
5587 | PTR2UV(sv)); | |
79072805 | 5588 | return; |
79072805 | 5589 | } |
463ee0b2 | 5590 | #endif |
d689ffdd JP |
5591 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
5592 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
5593 | SvREFCNT(sv) = (~(U32)0)/2; | |
5594 | return; | |
5595 | } | |
79072805 | 5596 | sv_clear(sv); |
477f5d66 CS |
5597 | if (! SvREFCNT(sv)) |
5598 | del_SV(sv); | |
79072805 LW |
5599 | } |
5600 | ||
954c1994 GS |
5601 | /* |
5602 | =for apidoc sv_len | |
5603 | ||
645c22ef DM |
5604 | Returns the length of the string in the SV. Handles magic and type |
5605 | coercion. See also C<SvCUR>, which gives raw access to the xpv_cur slot. | |
954c1994 GS |
5606 | |
5607 | =cut | |
5608 | */ | |
5609 | ||
79072805 | 5610 | STRLEN |
864dbfa3 | 5611 | Perl_sv_len(pTHX_ register SV *sv) |
79072805 | 5612 | { |
463ee0b2 | 5613 | STRLEN len; |
79072805 LW |
5614 | |
5615 | if (!sv) | |
5616 | return 0; | |
5617 | ||
8990e307 | 5618 | if (SvGMAGICAL(sv)) |
565764a8 | 5619 | len = mg_length(sv); |
8990e307 | 5620 | else |
497b47a8 | 5621 | (void)SvPV(sv, len); |
463ee0b2 | 5622 | return len; |
79072805 LW |
5623 | } |
5624 | ||
c461cf8f JH |
5625 | /* |
5626 | =for apidoc sv_len_utf8 | |
5627 | ||
5628 | Returns the number of characters in the string in an SV, counting wide | |
645c22ef | 5629 | UTF8 bytes as a single character. Handles magic and type coercion. |
c461cf8f JH |
5630 | |
5631 | =cut | |
5632 | */ | |
5633 | ||
7e8c5dac HS |
5634 | /* |
5635 | * The length is cached in PERL_UTF8_magic, in the mg_len field. Also the | |
5636 | * mg_ptr is used, by sv_pos_u2b(), see the comments of S_utf8_mg_pos_init(). | |
5637 | * (Note that the mg_len is not the length of the mg_ptr field.) | |
5638 | * | |
5639 | */ | |
5640 | ||
a0ed51b3 | 5641 | STRLEN |
864dbfa3 | 5642 | Perl_sv_len_utf8(pTHX_ register SV *sv) |
a0ed51b3 | 5643 | { |
a0ed51b3 LW |
5644 | if (!sv) |
5645 | return 0; | |
5646 | ||
a0ed51b3 | 5647 | if (SvGMAGICAL(sv)) |
b76347f2 | 5648 | return mg_length(sv); |
a0ed51b3 | 5649 | else |
b76347f2 | 5650 | { |
7e8c5dac | 5651 | STRLEN len, ulen; |
b76347f2 | 5652 | U8 *s = (U8*)SvPV(sv, len); |
7e8c5dac HS |
5653 | MAGIC *mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_utf8) : 0; |
5654 | ||
5655 | if (mg && mg->mg_len != -1 && (mg->mg_len > 0 || len == 0)) | |
5656 | ulen = mg->mg_len; | |
5657 | else { | |
5658 | ulen = Perl_utf8_length(aTHX_ s, s + len); | |
5659 | if (!mg && !SvREADONLY(sv)) { | |
5660 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
5661 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
5662 | assert(mg); | |
5663 | } | |
5664 | if (mg) | |
5665 | mg->mg_len = ulen; | |
5666 | } | |
5667 | return ulen; | |
5668 | } | |
5669 | } | |
5670 | ||
5671 | /* S_utf8_mg_pos_init() is used to initialize the mg_ptr field of | |
5672 | * a PERL_UTF8_magic. The mg_ptr is used to store the mapping | |
5673 | * between UTF-8 and byte offsets. There are two (substr offset and substr | |
5674 | * length, the i offset, PERL_MAGIC_UTF8_CACHESIZE) times two (UTF-8 offset | |
5675 | * and byte offset) cache positions. | |
5676 | * | |
5677 | * The mg_len field is used by sv_len_utf8(), see its comments. | |
5678 | * Note that the mg_len is not the length of the mg_ptr field. | |
5679 | * | |
5680 | */ | |
5681 | STATIC bool | |
6e551876 | 5682 | S_utf8_mg_pos_init(pTHX_ SV *sv, MAGIC **mgp, STRLEN **cachep, I32 i, I32 *offsetp, U8 *s, U8 *start) |
7e8c5dac HS |
5683 | { |
5684 | bool found = FALSE; | |
5685 | ||
5686 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
5687 | if (!*mgp) { | |
5688 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
5689 | *mgp = mg_find(sv, PERL_MAGIC_utf8); | |
5690 | } | |
5691 | assert(*mgp); | |
b76347f2 | 5692 | |
7e8c5dac HS |
5693 | if ((*mgp)->mg_ptr) |
5694 | *cachep = (STRLEN *) (*mgp)->mg_ptr; | |
5695 | else { | |
5696 | Newz(0, *cachep, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); | |
5697 | (*mgp)->mg_ptr = (char *) *cachep; | |
5698 | } | |
5699 | assert(*cachep); | |
5700 | ||
5701 | (*cachep)[i] = *offsetp; | |
5702 | (*cachep)[i+1] = s - start; | |
5703 | found = TRUE; | |
a0ed51b3 | 5704 | } |
7e8c5dac HS |
5705 | |
5706 | return found; | |
a0ed51b3 LW |
5707 | } |
5708 | ||
645c22ef | 5709 | /* |
7e8c5dac HS |
5710 | * S_utf8_mg_pos() is used to query and update mg_ptr field of |
5711 | * a PERL_UTF8_magic. The mg_ptr is used to store the mapping | |
5712 | * between UTF-8 and byte offsets. See also the comments of | |
5713 | * S_utf8_mg_pos_init(). | |
5714 | * | |
5715 | */ | |
5716 | STATIC bool | |
6e551876 | 5717 | S_utf8_mg_pos(pTHX_ SV *sv, MAGIC **mgp, STRLEN **cachep, I32 i, I32 *offsetp, I32 uoff, U8 **sp, U8 *start, U8 *send) |
7e8c5dac HS |
5718 | { |
5719 | bool found = FALSE; | |
5720 | ||
5721 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
5722 | if (!*mgp) | |
5723 | *mgp = mg_find(sv, PERL_MAGIC_utf8); | |
5724 | if (*mgp && (*mgp)->mg_ptr) { | |
5725 | *cachep = (STRLEN *) (*mgp)->mg_ptr; | |
667208dd | 5726 | if ((*cachep)[i] == (STRLEN)uoff) /* An exact match. */ |
7e8c5dac HS |
5727 | found = TRUE; |
5728 | else { /* We will skip to the right spot. */ | |
5729 | STRLEN forw = 0; | |
5730 | STRLEN backw = 0; | |
5731 | U8* p = NULL; | |
5732 | ||
5733 | /* The assumption is that going backward is half | |
5734 | * the speed of going forward (that's where the | |
5735 | * 2 * backw in the below comes from). (The real | |
5736 | * figure of course depends on the UTF-8 data.) */ | |
5737 | ||
667208dd | 5738 | if ((*cachep)[i] > (STRLEN)uoff) { |
7e8c5dac | 5739 | forw = uoff; |
667208dd | 5740 | backw = (*cachep)[i] - (STRLEN)uoff; |
7e8c5dac HS |
5741 | |
5742 | if (forw < 2 * backw) | |
5743 | p = start; | |
5744 | else | |
5745 | p = start + (*cachep)[i+1]; | |
5746 | } | |
5747 | /* Try this only for the substr offset (i == 0), | |
5748 | * not for the substr length (i == 2). */ | |
5749 | else if (i == 0) { /* (*cachep)[i] < uoff */ | |
5750 | STRLEN ulen = sv_len_utf8(sv); | |
5751 | ||
667208dd JH |
5752 | if ((STRLEN)uoff < ulen) { |
5753 | forw = (STRLEN)uoff - (*cachep)[i]; | |
5754 | backw = ulen - (STRLEN)uoff; | |
7e8c5dac HS |
5755 | |
5756 | if (forw < 2 * backw) | |
5757 | p = start + (*cachep)[i+1]; | |
5758 | else | |
5759 | p = send; | |
5760 | } | |
5761 | ||
5762 | /* If the string is not long enough for uoff, | |
5763 | * we could extend it, but not at this low a level. */ | |
5764 | } | |
5765 | ||
5766 | if (p) { | |
5767 | if (forw < 2 * backw) { | |
5768 | while (forw--) | |
5769 | p += UTF8SKIP(p); | |
5770 | } | |
5771 | else { | |
5772 | while (backw--) { | |
5773 | p--; | |
5774 | while (UTF8_IS_CONTINUATION(*p)) | |
5775 | p--; | |
5776 | } | |
5777 | } | |
5778 | ||
5779 | /* Update the cache. */ | |
667208dd | 5780 | (*cachep)[i] = (STRLEN)uoff; |
7e8c5dac HS |
5781 | (*cachep)[i+1] = p - start; |
5782 | ||
5783 | found = TRUE; | |
5784 | } | |
5785 | } | |
5786 | if (found) { /* Setup the return values. */ | |
5787 | *offsetp = (*cachep)[i+1]; | |
5788 | *sp = start + *offsetp; | |
5789 | if (*sp >= send) { | |
5790 | *sp = send; | |
5791 | *offsetp = send - start; | |
5792 | } | |
5793 | else if (*sp < start) { | |
5794 | *sp = start; | |
5795 | *offsetp = 0; | |
5796 | } | |
5797 | } | |
5798 | } | |
5799 | } | |
5800 | return found; | |
5801 | } | |
5802 | ||
5803 | /* | |
645c22ef DM |
5804 | =for apidoc sv_pos_u2b |
5805 | ||
5806 | Converts the value pointed to by offsetp from a count of UTF8 chars from | |
5807 | the start of the string, to a count of the equivalent number of bytes; if | |
5808 | lenp is non-zero, it does the same to lenp, but this time starting from | |
5809 | the offset, rather than from the start of the string. Handles magic and | |
5810 | type coercion. | |
5811 | ||
5812 | =cut | |
5813 | */ | |
5814 | ||
7e8c5dac HS |
5815 | /* |
5816 | * sv_pos_u2b() uses, like sv_pos_b2u(), the mg_ptr of the potential | |
5817 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
5818 | * byte offsets. See also the comments of S_utf8_mg_pos(). | |
5819 | * | |
5820 | */ | |
5821 | ||
a0ed51b3 | 5822 | void |
864dbfa3 | 5823 | Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp) |
a0ed51b3 | 5824 | { |
dfe13c55 GS |
5825 | U8 *start; |
5826 | U8 *s; | |
a0ed51b3 | 5827 | STRLEN len; |
7e8c5dac HS |
5828 | STRLEN *cache = 0; |
5829 | STRLEN boffset = 0; | |
a0ed51b3 LW |
5830 | |
5831 | if (!sv) | |
5832 | return; | |
5833 | ||
dfe13c55 | 5834 | start = s = (U8*)SvPV(sv, len); |
7e8c5dac HS |
5835 | if (len) { |
5836 | I32 uoffset = *offsetp; | |
5837 | U8 *send = s + len; | |
5838 | MAGIC *mg = 0; | |
5839 | bool found = FALSE; | |
5840 | ||
bdf77a2a | 5841 | if (utf8_mg_pos(sv, &mg, &cache, 0, offsetp, *offsetp, &s, start, send)) |
7e8c5dac HS |
5842 | found = TRUE; |
5843 | if (!found && uoffset > 0) { | |
5844 | while (s < send && uoffset--) | |
5845 | s += UTF8SKIP(s); | |
5846 | if (s >= send) | |
5847 | s = send; | |
bdf77a2a | 5848 | if (utf8_mg_pos_init(sv, &mg, &cache, 0, offsetp, s, start)) |
7e8c5dac HS |
5849 | boffset = cache[1]; |
5850 | *offsetp = s - start; | |
5851 | } | |
5852 | if (lenp) { | |
5853 | found = FALSE; | |
5854 | start = s; | |
bdf77a2a | 5855 | if (utf8_mg_pos(sv, &mg, &cache, 2, lenp, *lenp + *offsetp, &s, start, send)) { |
7e8c5dac HS |
5856 | *lenp -= boffset; |
5857 | found = TRUE; | |
5858 | } | |
5859 | if (!found && *lenp > 0) { | |
5860 | I32 ulen = *lenp; | |
5861 | if (ulen > 0) | |
5862 | while (s < send && ulen--) | |
5863 | s += UTF8SKIP(s); | |
5864 | if (s >= send) | |
5865 | s = send; | |
bdf77a2a | 5866 | if (utf8_mg_pos_init(sv, &mg, &cache, 2, lenp, s, start)) |
7e8c5dac HS |
5867 | cache[2] += *offsetp; |
5868 | } | |
5869 | *lenp = s - start; | |
5870 | } | |
5871 | } | |
5872 | else { | |
5873 | *offsetp = 0; | |
5874 | if (lenp) | |
5875 | *lenp = 0; | |
a0ed51b3 LW |
5876 | } |
5877 | return; | |
5878 | } | |
5879 | ||
645c22ef DM |
5880 | /* |
5881 | =for apidoc sv_pos_b2u | |
5882 | ||
5883 | Converts the value pointed to by offsetp from a count of bytes from the | |
5884 | start of the string, to a count of the equivalent number of UTF8 chars. | |
5885 | Handles magic and type coercion. | |
5886 | ||
5887 | =cut | |
5888 | */ | |
5889 | ||
7e8c5dac HS |
5890 | /* |
5891 | * sv_pos_b2u() uses, like sv_pos_u2b(), the mg_ptr of the potential | |
5892 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
5893 | * byte offsets. See also the comments of S_utf8_mg_pos(). | |
5894 | * | |
5895 | */ | |
5896 | ||
a0ed51b3 | 5897 | void |
7e8c5dac | 5898 | Perl_sv_pos_b2u(pTHX_ register SV* sv, I32* offsetp) |
a0ed51b3 | 5899 | { |
7e8c5dac | 5900 | U8* s; |
a0ed51b3 LW |
5901 | STRLEN len; |
5902 | ||
5903 | if (!sv) | |
5904 | return; | |
5905 | ||
dfe13c55 | 5906 | s = (U8*)SvPV(sv, len); |
eb160463 | 5907 | if ((I32)len < *offsetp) |
a0dbb045 | 5908 | Perl_croak(aTHX_ "panic: sv_pos_b2u: bad byte offset"); |
7e8c5dac HS |
5909 | else { |
5910 | U8* send = s + *offsetp; | |
5911 | MAGIC* mg = NULL; | |
5912 | STRLEN *cache = NULL; | |
5913 | ||
5914 | len = 0; | |
5915 | ||
5916 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
5917 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
5918 | if (mg && mg->mg_ptr) { | |
5919 | cache = (STRLEN *) mg->mg_ptr; | |
5920 | if (cache[1] == *offsetp) { | |
5921 | /* An exact match. */ | |
5922 | *offsetp = cache[0]; | |
5923 | ||
5924 | return; | |
5925 | } | |
5926 | else if (cache[1] < *offsetp) { | |
5927 | /* We already know part of the way. */ | |
5928 | len = cache[0]; | |
5929 | s += cache[1]; | |
5930 | /* Let the below loop do the rest. */ | |
5931 | } | |
5932 | else { /* cache[1] > *offsetp */ | |
5933 | /* We already know all of the way, now we may | |
5934 | * be able to walk back. The same assumption | |
5935 | * is made as in S_utf8_mg_pos(), namely that | |
5936 | * walking backward is twice slower than | |
5937 | * walking forward. */ | |
5938 | STRLEN forw = *offsetp; | |
5939 | STRLEN backw = cache[1] - *offsetp; | |
5940 | ||
5941 | if (!(forw < 2 * backw)) { | |
5942 | U8 *p = s + cache[1]; | |
5943 | STRLEN ubackw = 0; | |
5944 | ||
a5b510f2 AE |
5945 | cache[1] -= backw; |
5946 | ||
7e8c5dac HS |
5947 | while (backw--) { |
5948 | p--; | |
5949 | while (UTF8_IS_CONTINUATION(*p)) | |
5950 | p--; | |
5951 | ubackw++; | |
5952 | } | |
5953 | ||
5954 | cache[0] -= ubackw; | |
7e8c5dac HS |
5955 | } |
5956 | } | |
5957 | } | |
a0dbb045 | 5958 | } |
7e8c5dac HS |
5959 | |
5960 | while (s < send) { | |
5961 | STRLEN n = 1; | |
5962 | ||
5963 | /* Call utf8n_to_uvchr() to validate the sequence | |
5964 | * (unless a simple non-UTF character) */ | |
5965 | if (!UTF8_IS_INVARIANT(*s)) | |
5966 | utf8n_to_uvchr(s, UTF8SKIP(s), &n, 0); | |
5967 | if (n > 0) { | |
5968 | s += n; | |
5969 | len++; | |
5970 | } | |
5971 | else | |
5972 | break; | |
5973 | } | |
5974 | ||
5975 | if (!SvREADONLY(sv)) { | |
5976 | if (!mg) { | |
5977 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
5978 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
5979 | } | |
5980 | assert(mg); | |
5981 | ||
5982 | if (!mg->mg_ptr) { | |
5983 | Newz(0, cache, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); | |
5984 | mg->mg_ptr = (char *) cache; | |
5985 | } | |
5986 | assert(cache); | |
5987 | ||
5988 | cache[0] = len; | |
5989 | cache[1] = *offsetp; | |
5990 | } | |
5991 | ||
5992 | *offsetp = len; | |
a0ed51b3 | 5993 | } |
a0ed51b3 LW |
5994 | return; |
5995 | } | |
5996 | ||
954c1994 GS |
5997 | /* |
5998 | =for apidoc sv_eq | |
5999 | ||
6000 | Returns a boolean indicating whether the strings in the two SVs are | |
645c22ef DM |
6001 | identical. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
6002 | coerce its args to strings if necessary. | |
954c1994 GS |
6003 | |
6004 | =cut | |
6005 | */ | |
6006 | ||
79072805 | 6007 | I32 |
e01b9e88 | 6008 | Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2) |
79072805 LW |
6009 | { |
6010 | char *pv1; | |
463ee0b2 | 6011 | STRLEN cur1; |
79072805 | 6012 | char *pv2; |
463ee0b2 | 6013 | STRLEN cur2; |
e01b9e88 | 6014 | I32 eq = 0; |
553e1bcc AT |
6015 | char *tpv = Nullch; |
6016 | SV* svrecode = Nullsv; | |
79072805 | 6017 | |
e01b9e88 | 6018 | if (!sv1) { |
79072805 LW |
6019 | pv1 = ""; |
6020 | cur1 = 0; | |
6021 | } | |
463ee0b2 | 6022 | else |
e01b9e88 | 6023 | pv1 = SvPV(sv1, cur1); |
79072805 | 6024 | |
e01b9e88 SC |
6025 | if (!sv2){ |
6026 | pv2 = ""; | |
6027 | cur2 = 0; | |
92d29cee | 6028 | } |
e01b9e88 SC |
6029 | else |
6030 | pv2 = SvPV(sv2, cur2); | |
79072805 | 6031 | |
cf48d248 | 6032 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
6033 | /* Differing utf8ness. |
6034 | * Do not UTF8size the comparands as a side-effect. */ | |
6035 | if (PL_encoding) { | |
6036 | if (SvUTF8(sv1)) { | |
553e1bcc AT |
6037 | svrecode = newSVpvn(pv2, cur2); |
6038 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6039 | pv2 = SvPV(svrecode, cur2); | |
799ef3cb JH |
6040 | } |
6041 | else { | |
553e1bcc AT |
6042 | svrecode = newSVpvn(pv1, cur1); |
6043 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6044 | pv1 = SvPV(svrecode, cur1); | |
799ef3cb JH |
6045 | } |
6046 | /* Now both are in UTF-8. */ | |
6047 | if (cur1 != cur2) | |
6048 | return FALSE; | |
6049 | } | |
6050 | else { | |
6051 | bool is_utf8 = TRUE; | |
6052 | ||
6053 | if (SvUTF8(sv1)) { | |
6054 | /* sv1 is the UTF-8 one, | |
6055 | * if is equal it must be downgrade-able */ | |
6056 | char *pv = (char*)bytes_from_utf8((U8*)pv1, | |
6057 | &cur1, &is_utf8); | |
6058 | if (pv != pv1) | |
553e1bcc | 6059 | pv1 = tpv = pv; |
799ef3cb JH |
6060 | } |
6061 | else { | |
6062 | /* sv2 is the UTF-8 one, | |
6063 | * if is equal it must be downgrade-able */ | |
6064 | char *pv = (char *)bytes_from_utf8((U8*)pv2, | |
6065 | &cur2, &is_utf8); | |
6066 | if (pv != pv2) | |
553e1bcc | 6067 | pv2 = tpv = pv; |
799ef3cb JH |
6068 | } |
6069 | if (is_utf8) { | |
6070 | /* Downgrade not possible - cannot be eq */ | |
6071 | return FALSE; | |
6072 | } | |
6073 | } | |
cf48d248 JH |
6074 | } |
6075 | ||
6076 | if (cur1 == cur2) | |
765f542d | 6077 | eq = (pv1 == pv2) || memEQ(pv1, pv2, cur1); |
e01b9e88 | 6078 | |
553e1bcc AT |
6079 | if (svrecode) |
6080 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6081 | |
553e1bcc AT |
6082 | if (tpv) |
6083 | Safefree(tpv); | |
cf48d248 | 6084 | |
e01b9e88 | 6085 | return eq; |
79072805 LW |
6086 | } |
6087 | ||
954c1994 GS |
6088 | /* |
6089 | =for apidoc sv_cmp | |
6090 | ||
6091 | Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the | |
6092 | string in C<sv1> is less than, equal to, or greater than the string in | |
645c22ef DM |
6093 | C<sv2>. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
6094 | coerce its args to strings if necessary. See also C<sv_cmp_locale>. | |
954c1994 GS |
6095 | |
6096 | =cut | |
6097 | */ | |
6098 | ||
79072805 | 6099 | I32 |
e01b9e88 | 6100 | Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2) |
79072805 | 6101 | { |
560a288e | 6102 | STRLEN cur1, cur2; |
553e1bcc | 6103 | char *pv1, *pv2, *tpv = Nullch; |
cf48d248 | 6104 | I32 cmp; |
553e1bcc | 6105 | SV *svrecode = Nullsv; |
560a288e | 6106 | |
e01b9e88 SC |
6107 | if (!sv1) { |
6108 | pv1 = ""; | |
560a288e GS |
6109 | cur1 = 0; |
6110 | } | |
e01b9e88 SC |
6111 | else |
6112 | pv1 = SvPV(sv1, cur1); | |
560a288e | 6113 | |
553e1bcc | 6114 | if (!sv2) { |
e01b9e88 | 6115 | pv2 = ""; |
560a288e GS |
6116 | cur2 = 0; |
6117 | } | |
e01b9e88 SC |
6118 | else |
6119 | pv2 = SvPV(sv2, cur2); | |
79072805 | 6120 | |
cf48d248 | 6121 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
6122 | /* Differing utf8ness. |
6123 | * Do not UTF8size the comparands as a side-effect. */ | |
cf48d248 | 6124 | if (SvUTF8(sv1)) { |
799ef3cb | 6125 | if (PL_encoding) { |
553e1bcc AT |
6126 | svrecode = newSVpvn(pv2, cur2); |
6127 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6128 | pv2 = SvPV(svrecode, cur2); | |
799ef3cb JH |
6129 | } |
6130 | else { | |
553e1bcc | 6131 | pv2 = tpv = (char*)bytes_to_utf8((U8*)pv2, &cur2); |
799ef3cb | 6132 | } |
cf48d248 JH |
6133 | } |
6134 | else { | |
799ef3cb | 6135 | if (PL_encoding) { |
553e1bcc AT |
6136 | svrecode = newSVpvn(pv1, cur1); |
6137 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6138 | pv1 = SvPV(svrecode, cur1); | |
799ef3cb JH |
6139 | } |
6140 | else { | |
553e1bcc | 6141 | pv1 = tpv = (char*)bytes_to_utf8((U8*)pv1, &cur1); |
799ef3cb | 6142 | } |
cf48d248 JH |
6143 | } |
6144 | } | |
6145 | ||
e01b9e88 | 6146 | if (!cur1) { |
cf48d248 | 6147 | cmp = cur2 ? -1 : 0; |
e01b9e88 | 6148 | } else if (!cur2) { |
cf48d248 JH |
6149 | cmp = 1; |
6150 | } else { | |
6151 | I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2); | |
e01b9e88 SC |
6152 | |
6153 | if (retval) { | |
cf48d248 | 6154 | cmp = retval < 0 ? -1 : 1; |
e01b9e88 | 6155 | } else if (cur1 == cur2) { |
cf48d248 JH |
6156 | cmp = 0; |
6157 | } else { | |
6158 | cmp = cur1 < cur2 ? -1 : 1; | |
e01b9e88 | 6159 | } |
cf48d248 | 6160 | } |
16660edb | 6161 | |
553e1bcc AT |
6162 | if (svrecode) |
6163 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6164 | |
553e1bcc AT |
6165 | if (tpv) |
6166 | Safefree(tpv); | |
cf48d248 JH |
6167 | |
6168 | return cmp; | |
bbce6d69 | 6169 | } |
16660edb | 6170 | |
c461cf8f JH |
6171 | /* |
6172 | =for apidoc sv_cmp_locale | |
6173 | ||
645c22ef DM |
6174 | Compares the strings in two SVs in a locale-aware manner. Is UTF-8 and |
6175 | 'use bytes' aware, handles get magic, and will coerce its args to strings | |
6176 | if necessary. See also C<sv_cmp_locale>. See also C<sv_cmp>. | |
c461cf8f JH |
6177 | |
6178 | =cut | |
6179 | */ | |
6180 | ||
bbce6d69 | 6181 | I32 |
864dbfa3 | 6182 | Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2) |
bbce6d69 | 6183 | { |
36477c24 | 6184 | #ifdef USE_LOCALE_COLLATE |
16660edb | 6185 | |
bbce6d69 | 6186 | char *pv1, *pv2; |
6187 | STRLEN len1, len2; | |
6188 | I32 retval; | |
16660edb | 6189 | |
3280af22 | 6190 | if (PL_collation_standard) |
bbce6d69 | 6191 | goto raw_compare; |
16660edb | 6192 | |
bbce6d69 | 6193 | len1 = 0; |
8ac85365 | 6194 | pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL; |
bbce6d69 | 6195 | len2 = 0; |
8ac85365 | 6196 | pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL; |
16660edb | 6197 | |
bbce6d69 | 6198 | if (!pv1 || !len1) { |
6199 | if (pv2 && len2) | |
6200 | return -1; | |
6201 | else | |
6202 | goto raw_compare; | |
6203 | } | |
6204 | else { | |
6205 | if (!pv2 || !len2) | |
6206 | return 1; | |
6207 | } | |
16660edb | 6208 | |
bbce6d69 | 6209 | retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2); |
16660edb | 6210 | |
bbce6d69 | 6211 | if (retval) |
16660edb | 6212 | return retval < 0 ? -1 : 1; |
6213 | ||
bbce6d69 | 6214 | /* |
6215 | * When the result of collation is equality, that doesn't mean | |
6216 | * that there are no differences -- some locales exclude some | |
6217 | * characters from consideration. So to avoid false equalities, | |
6218 | * we use the raw string as a tiebreaker. | |
6219 | */ | |
16660edb | 6220 | |
bbce6d69 | 6221 | raw_compare: |
6222 | /* FALL THROUGH */ | |
16660edb | 6223 | |
36477c24 | 6224 | #endif /* USE_LOCALE_COLLATE */ |
16660edb | 6225 | |
bbce6d69 | 6226 | return sv_cmp(sv1, sv2); |
6227 | } | |
79072805 | 6228 | |
645c22ef | 6229 | |
36477c24 | 6230 | #ifdef USE_LOCALE_COLLATE |
645c22ef | 6231 | |
7a4c00b4 | 6232 | /* |
645c22ef DM |
6233 | =for apidoc sv_collxfrm |
6234 | ||
6235 | Add Collate Transform magic to an SV if it doesn't already have it. | |
6236 | ||
6237 | Any scalar variable may carry PERL_MAGIC_collxfrm magic that contains the | |
6238 | scalar data of the variable, but transformed to such a format that a normal | |
6239 | memory comparison can be used to compare the data according to the locale | |
6240 | settings. | |
6241 | ||
6242 | =cut | |
6243 | */ | |
6244 | ||
bbce6d69 | 6245 | char * |
864dbfa3 | 6246 | Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp) |
bbce6d69 | 6247 | { |
7a4c00b4 | 6248 | MAGIC *mg; |
16660edb | 6249 | |
14befaf4 | 6250 | mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_collxfrm) : (MAGIC *) NULL; |
3280af22 | 6251 | if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) { |
bbce6d69 | 6252 | char *s, *xf; |
6253 | STRLEN len, xlen; | |
6254 | ||
7a4c00b4 | 6255 | if (mg) |
6256 | Safefree(mg->mg_ptr); | |
bbce6d69 | 6257 | s = SvPV(sv, len); |
6258 | if ((xf = mem_collxfrm(s, len, &xlen))) { | |
ff0cee69 | 6259 | if (SvREADONLY(sv)) { |
6260 | SAVEFREEPV(xf); | |
6261 | *nxp = xlen; | |
3280af22 | 6262 | return xf + sizeof(PL_collation_ix); |
ff0cee69 | 6263 | } |
7a4c00b4 | 6264 | if (! mg) { |
14befaf4 DM |
6265 | sv_magic(sv, 0, PERL_MAGIC_collxfrm, 0, 0); |
6266 | mg = mg_find(sv, PERL_MAGIC_collxfrm); | |
7a4c00b4 | 6267 | assert(mg); |
bbce6d69 | 6268 | } |
7a4c00b4 | 6269 | mg->mg_ptr = xf; |
565764a8 | 6270 | mg->mg_len = xlen; |
7a4c00b4 | 6271 | } |
6272 | else { | |
ff0cee69 | 6273 | if (mg) { |
6274 | mg->mg_ptr = NULL; | |
565764a8 | 6275 | mg->mg_len = -1; |
ff0cee69 | 6276 | } |
bbce6d69 | 6277 | } |
6278 | } | |
7a4c00b4 | 6279 | if (mg && mg->mg_ptr) { |
565764a8 | 6280 | *nxp = mg->mg_len; |
3280af22 | 6281 | return mg->mg_ptr + sizeof(PL_collation_ix); |
bbce6d69 | 6282 | } |
6283 | else { | |
6284 | *nxp = 0; | |
6285 | return NULL; | |
16660edb | 6286 | } |
79072805 LW |
6287 | } |
6288 | ||
36477c24 | 6289 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 6290 | |
c461cf8f JH |
6291 | /* |
6292 | =for apidoc sv_gets | |
6293 | ||
6294 | Get a line from the filehandle and store it into the SV, optionally | |
6295 | appending to the currently-stored string. | |
6296 | ||
6297 | =cut | |
6298 | */ | |
6299 | ||
79072805 | 6300 | char * |
864dbfa3 | 6301 | Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append) |
79072805 | 6302 | { |
c07a80fd | 6303 | char *rsptr; |
6304 | STRLEN rslen; | |
6305 | register STDCHAR rslast; | |
6306 | register STDCHAR *bp; | |
6307 | register I32 cnt; | |
9c5ffd7c | 6308 | I32 i = 0; |
8bfdd7d9 | 6309 | I32 rspara = 0; |
e311fd51 | 6310 | I32 recsize; |
c07a80fd | 6311 | |
bc44a8a2 NC |
6312 | if (SvTHINKFIRST(sv)) |
6313 | sv_force_normal_flags(sv, append ? 0 : SV_COW_DROP_PV); | |
765f542d NC |
6314 | /* XXX. If you make this PVIV, then copy on write can copy scalars read |
6315 | from <>. | |
6316 | However, perlbench says it's slower, because the existing swipe code | |
6317 | is faster than copy on write. | |
6318 | Swings and roundabouts. */ | |
6fc92669 | 6319 | (void)SvUPGRADE(sv, SVt_PV); |
99491443 | 6320 | |
ff68c719 | 6321 | SvSCREAM_off(sv); |
efd8b2ba AE |
6322 | |
6323 | if (append) { | |
6324 | if (PerlIO_isutf8(fp)) { | |
6325 | if (!SvUTF8(sv)) { | |
6326 | sv_utf8_upgrade_nomg(sv); | |
6327 | sv_pos_u2b(sv,&append,0); | |
6328 | } | |
6329 | } else if (SvUTF8(sv)) { | |
6330 | SV *tsv = NEWSV(0,0); | |
6331 | sv_gets(tsv, fp, 0); | |
6332 | sv_utf8_upgrade_nomg(tsv); | |
6333 | SvCUR_set(sv,append); | |
6334 | sv_catsv(sv,tsv); | |
6335 | sv_free(tsv); | |
6336 | goto return_string_or_null; | |
6337 | } | |
6338 | } | |
6339 | ||
6340 | SvPOK_only(sv); | |
6341 | if (PerlIO_isutf8(fp)) | |
6342 | SvUTF8_on(sv); | |
c07a80fd | 6343 | |
8bfdd7d9 HS |
6344 | if (PL_curcop == &PL_compiling) { |
6345 | /* we always read code in line mode */ | |
6346 | rsptr = "\n"; | |
6347 | rslen = 1; | |
6348 | } | |
6349 | else if (RsSNARF(PL_rs)) { | |
e468d35b NIS |
6350 | /* If it is a regular disk file use size from stat() as estimate |
6351 | of amount we are going to read - may result in malloc-ing | |
6352 | more memory than we realy need if layers bellow reduce | |
6353 | size we read (e.g. CRLF or a gzip layer) | |
6354 | */ | |
e311fd51 | 6355 | Stat_t st; |
e468d35b NIS |
6356 | if (!PerlLIO_fstat(PerlIO_fileno(fp), &st) && S_ISREG(st.st_mode)) { |
6357 | Off_t offset = PerlIO_tell(fp); | |
58f1856e | 6358 | if (offset != (Off_t) -1 && st.st_size + append > offset) { |
e468d35b NIS |
6359 | (void) SvGROW(sv, (STRLEN)((st.st_size - offset) + append + 1)); |
6360 | } | |
6361 | } | |
c07a80fd | 6362 | rsptr = NULL; |
6363 | rslen = 0; | |
6364 | } | |
3280af22 | 6365 | else if (RsRECORD(PL_rs)) { |
e311fd51 | 6366 | I32 bytesread; |
5b2b9c68 HM |
6367 | char *buffer; |
6368 | ||
6369 | /* Grab the size of the record we're getting */ | |
3280af22 | 6370 | recsize = SvIV(SvRV(PL_rs)); |
e311fd51 | 6371 | buffer = SvGROW(sv, (STRLEN)(recsize + append + 1)) + append; |
5b2b9c68 HM |
6372 | /* Go yank in */ |
6373 | #ifdef VMS | |
6374 | /* VMS wants read instead of fread, because fread doesn't respect */ | |
6375 | /* RMS record boundaries. This is not necessarily a good thing to be */ | |
e468d35b NIS |
6376 | /* doing, but we've got no other real choice - except avoid stdio |
6377 | as implementation - perhaps write a :vms layer ? | |
6378 | */ | |
5b2b9c68 HM |
6379 | bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize); |
6380 | #else | |
6381 | bytesread = PerlIO_read(fp, buffer, recsize); | |
6382 | #endif | |
27e6ca2d AE |
6383 | if (bytesread < 0) |
6384 | bytesread = 0; | |
e311fd51 | 6385 | SvCUR_set(sv, bytesread += append); |
e670df4e | 6386 | buffer[bytesread] = '\0'; |
efd8b2ba | 6387 | goto return_string_or_null; |
5b2b9c68 | 6388 | } |
3280af22 | 6389 | else if (RsPARA(PL_rs)) { |
c07a80fd | 6390 | rsptr = "\n\n"; |
6391 | rslen = 2; | |
8bfdd7d9 | 6392 | rspara = 1; |
c07a80fd | 6393 | } |
7d59b7e4 NIS |
6394 | else { |
6395 | /* Get $/ i.e. PL_rs into same encoding as stream wants */ | |
6396 | if (PerlIO_isutf8(fp)) { | |
6397 | rsptr = SvPVutf8(PL_rs, rslen); | |
6398 | } | |
6399 | else { | |
6400 | if (SvUTF8(PL_rs)) { | |
6401 | if (!sv_utf8_downgrade(PL_rs, TRUE)) { | |
6402 | Perl_croak(aTHX_ "Wide character in $/"); | |
6403 | } | |
6404 | } | |
6405 | rsptr = SvPV(PL_rs, rslen); | |
6406 | } | |
6407 | } | |
6408 | ||
c07a80fd | 6409 | rslast = rslen ? rsptr[rslen - 1] : '\0'; |
6410 | ||
8bfdd7d9 | 6411 | if (rspara) { /* have to do this both before and after */ |
79072805 | 6412 | do { /* to make sure file boundaries work right */ |
760ac839 | 6413 | if (PerlIO_eof(fp)) |
a0d0e21e | 6414 | return 0; |
760ac839 | 6415 | i = PerlIO_getc(fp); |
79072805 | 6416 | if (i != '\n') { |
a0d0e21e LW |
6417 | if (i == -1) |
6418 | return 0; | |
760ac839 | 6419 | PerlIO_ungetc(fp,i); |
79072805 LW |
6420 | break; |
6421 | } | |
6422 | } while (i != EOF); | |
6423 | } | |
c07a80fd | 6424 | |
760ac839 LW |
6425 | /* See if we know enough about I/O mechanism to cheat it ! */ |
6426 | ||
6427 | /* This used to be #ifdef test - it is made run-time test for ease | |
1c846c1f | 6428 | of abstracting out stdio interface. One call should be cheap |
760ac839 LW |
6429 | enough here - and may even be a macro allowing compile |
6430 | time optimization. | |
6431 | */ | |
6432 | ||
6433 | if (PerlIO_fast_gets(fp)) { | |
6434 | ||
6435 | /* | |
6436 | * We're going to steal some values from the stdio struct | |
6437 | * and put EVERYTHING in the innermost loop into registers. | |
6438 | */ | |
6439 | register STDCHAR *ptr; | |
6440 | STRLEN bpx; | |
6441 | I32 shortbuffered; | |
6442 | ||
16660edb | 6443 | #if defined(VMS) && defined(PERLIO_IS_STDIO) |
6444 | /* An ungetc()d char is handled separately from the regular | |
6445 | * buffer, so we getc() it back out and stuff it in the buffer. | |
6446 | */ | |
6447 | i = PerlIO_getc(fp); | |
6448 | if (i == EOF) return 0; | |
6449 | *(--((*fp)->_ptr)) = (unsigned char) i; | |
6450 | (*fp)->_cnt++; | |
6451 | #endif | |
c07a80fd | 6452 | |
c2960299 | 6453 | /* Here is some breathtakingly efficient cheating */ |
c07a80fd | 6454 | |
a20bf0c3 | 6455 | cnt = PerlIO_get_cnt(fp); /* get count into register */ |
e468d35b NIS |
6456 | /* make sure we have the room */ |
6457 | if ((I32)(SvLEN(sv) - append) <= cnt + 1) { | |
6458 | /* Not room for all of it | |
6459 | if we are looking for a separator and room for some | |
6460 | */ | |
6461 | if (rslen && cnt > 80 && (I32)SvLEN(sv) > append) { | |
6462 | /* just process what we have room for */ | |
79072805 LW |
6463 | shortbuffered = cnt - SvLEN(sv) + append + 1; |
6464 | cnt -= shortbuffered; | |
6465 | } | |
6466 | else { | |
6467 | shortbuffered = 0; | |
bbce6d69 | 6468 | /* remember that cnt can be negative */ |
eb160463 | 6469 | SvGROW(sv, (STRLEN)(append + (cnt <= 0 ? 2 : (cnt + 1)))); |
79072805 LW |
6470 | } |
6471 | } | |
e468d35b | 6472 | else |
79072805 | 6473 | shortbuffered = 0; |
c07a80fd | 6474 | bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */ |
a20bf0c3 | 6475 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); |
16660edb | 6476 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6477 | "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
16660edb | 6478 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
ba7abf9d | 6479 | "Screamer: entering: PerlIO * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6480 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6481 | PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0))); |
79072805 LW |
6482 | for (;;) { |
6483 | screamer: | |
93a17b20 | 6484 | if (cnt > 0) { |
c07a80fd | 6485 | if (rslen) { |
760ac839 LW |
6486 | while (cnt > 0) { /* this | eat */ |
6487 | cnt--; | |
c07a80fd | 6488 | if ((*bp++ = *ptr++) == rslast) /* really | dust */ |
6489 | goto thats_all_folks; /* screams | sed :-) */ | |
6490 | } | |
6491 | } | |
6492 | else { | |
1c846c1f NIS |
6493 | Copy(ptr, bp, cnt, char); /* this | eat */ |
6494 | bp += cnt; /* screams | dust */ | |
c07a80fd | 6495 | ptr += cnt; /* louder | sed :-) */ |
a5f75d66 | 6496 | cnt = 0; |
93a17b20 | 6497 | } |
79072805 LW |
6498 | } |
6499 | ||
748a9306 | 6500 | if (shortbuffered) { /* oh well, must extend */ |
79072805 LW |
6501 | cnt = shortbuffered; |
6502 | shortbuffered = 0; | |
c07a80fd | 6503 | bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */ |
79072805 LW |
6504 | SvCUR_set(sv, bpx); |
6505 | SvGROW(sv, SvLEN(sv) + append + cnt + 2); | |
c07a80fd | 6506 | bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */ |
79072805 LW |
6507 | continue; |
6508 | } | |
6509 | ||
16660edb | 6510 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 GS |
6511 | "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n", |
6512 | PTR2UV(ptr),(long)cnt)); | |
cc00df79 | 6513 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* deregisterize cnt and ptr */ |
ba7abf9d | 6514 | #if 0 |
16660edb | 6515 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6516 | "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6517 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6518 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 6519 | #endif |
1c846c1f | 6520 | /* This used to call 'filbuf' in stdio form, but as that behaves like |
774d564b | 6521 | getc when cnt <= 0 we use PerlIO_getc here to avoid introducing |
6522 | another abstraction. */ | |
760ac839 | 6523 | i = PerlIO_getc(fp); /* get more characters */ |
ba7abf9d | 6524 | #if 0 |
16660edb | 6525 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6526 | "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6527 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6528 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 6529 | #endif |
a20bf0c3 JH |
6530 | cnt = PerlIO_get_cnt(fp); |
6531 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */ | |
16660edb | 6532 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6533 | "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
79072805 | 6534 | |
748a9306 LW |
6535 | if (i == EOF) /* all done for ever? */ |
6536 | goto thats_really_all_folks; | |
6537 | ||
c07a80fd | 6538 | bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */ |
79072805 LW |
6539 | SvCUR_set(sv, bpx); |
6540 | SvGROW(sv, bpx + cnt + 2); | |
c07a80fd | 6541 | bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */ |
6542 | ||
eb160463 | 6543 | *bp++ = (STDCHAR)i; /* store character from PerlIO_getc */ |
79072805 | 6544 | |
c07a80fd | 6545 | if (rslen && (STDCHAR)i == rslast) /* all done for now? */ |
79072805 | 6546 | goto thats_all_folks; |
79072805 LW |
6547 | } |
6548 | ||
6549 | thats_all_folks: | |
eb160463 | 6550 | if ((rslen > 1 && (STRLEN)(bp - (STDCHAR*)SvPVX(sv)) < rslen) || |
36477c24 | 6551 | memNE((char*)bp - rslen, rsptr, rslen)) |
760ac839 | 6552 | goto screamer; /* go back to the fray */ |
79072805 LW |
6553 | thats_really_all_folks: |
6554 | if (shortbuffered) | |
6555 | cnt += shortbuffered; | |
16660edb | 6556 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6557 | "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
cc00df79 | 6558 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* put these back or we're in trouble */ |
16660edb | 6559 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6560 | "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6561 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6562 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
79072805 | 6563 | *bp = '\0'; |
760ac839 | 6564 | SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */ |
16660edb | 6565 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
fb73857a | 6566 | "Screamer: done, len=%ld, string=|%.*s|\n", |
6567 | (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv))); | |
760ac839 LW |
6568 | } |
6569 | else | |
79072805 | 6570 | { |
4d2c4e07 | 6571 | #ifndef EPOC |
760ac839 | 6572 | /*The big, slow, and stupid way */ |
c07a80fd | 6573 | STDCHAR buf[8192]; |
4d2c4e07 OF |
6574 | #else |
6575 | /* Need to work around EPOC SDK features */ | |
6576 | /* On WINS: MS VC5 generates calls to _chkstk, */ | |
6577 | /* if a `large' stack frame is allocated */ | |
6578 | /* gcc on MARM does not generate calls like these */ | |
6579 | STDCHAR buf[1024]; | |
6580 | #endif | |
79072805 | 6581 | |
760ac839 | 6582 | screamer2: |
c07a80fd | 6583 | if (rslen) { |
760ac839 LW |
6584 | register STDCHAR *bpe = buf + sizeof(buf); |
6585 | bp = buf; | |
eb160463 | 6586 | while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = (STDCHAR)i) != rslast && bp < bpe) |
760ac839 LW |
6587 | ; /* keep reading */ |
6588 | cnt = bp - buf; | |
c07a80fd | 6589 | } |
6590 | else { | |
760ac839 | 6591 | cnt = PerlIO_read(fp,(char*)buf, sizeof(buf)); |
16660edb | 6592 | /* Accomodate broken VAXC compiler, which applies U8 cast to |
6593 | * both args of ?: operator, causing EOF to change into 255 | |
6594 | */ | |
37be0adf | 6595 | if (cnt > 0) |
cbe9e203 JH |
6596 | i = (U8)buf[cnt - 1]; |
6597 | else | |
37be0adf | 6598 | i = EOF; |
c07a80fd | 6599 | } |
79072805 | 6600 | |
cbe9e203 JH |
6601 | if (cnt < 0) |
6602 | cnt = 0; /* we do need to re-set the sv even when cnt <= 0 */ | |
6603 | if (append) | |
6604 | sv_catpvn(sv, (char *) buf, cnt); | |
6605 | else | |
6606 | sv_setpvn(sv, (char *) buf, cnt); | |
c07a80fd | 6607 | |
6608 | if (i != EOF && /* joy */ | |
6609 | (!rslen || | |
6610 | SvCUR(sv) < rslen || | |
36477c24 | 6611 | memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen))) |
79072805 LW |
6612 | { |
6613 | append = -1; | |
63e4d877 CS |
6614 | /* |
6615 | * If we're reading from a TTY and we get a short read, | |
6616 | * indicating that the user hit his EOF character, we need | |
6617 | * to notice it now, because if we try to read from the TTY | |
6618 | * again, the EOF condition will disappear. | |
6619 | * | |
6620 | * The comparison of cnt to sizeof(buf) is an optimization | |
6621 | * that prevents unnecessary calls to feof(). | |
6622 | * | |
6623 | * - jik 9/25/96 | |
6624 | */ | |
6625 | if (!(cnt < sizeof(buf) && PerlIO_eof(fp))) | |
6626 | goto screamer2; | |
79072805 LW |
6627 | } |
6628 | } | |
6629 | ||
8bfdd7d9 | 6630 | if (rspara) { /* have to do this both before and after */ |
c07a80fd | 6631 | while (i != EOF) { /* to make sure file boundaries work right */ |
760ac839 | 6632 | i = PerlIO_getc(fp); |
79072805 | 6633 | if (i != '\n') { |
760ac839 | 6634 | PerlIO_ungetc(fp,i); |
79072805 LW |
6635 | break; |
6636 | } | |
6637 | } | |
6638 | } | |
c07a80fd | 6639 | |
efd8b2ba | 6640 | return_string_or_null: |
c07a80fd | 6641 | return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch; |
79072805 LW |
6642 | } |
6643 | ||
954c1994 GS |
6644 | /* |
6645 | =for apidoc sv_inc | |
6646 | ||
645c22ef DM |
6647 | Auto-increment of the value in the SV, doing string to numeric conversion |
6648 | if necessary. Handles 'get' magic. | |
954c1994 GS |
6649 | |
6650 | =cut | |
6651 | */ | |
6652 | ||
79072805 | 6653 | void |
864dbfa3 | 6654 | Perl_sv_inc(pTHX_ register SV *sv) |
79072805 LW |
6655 | { |
6656 | register char *d; | |
463ee0b2 | 6657 | int flags; |
79072805 LW |
6658 | |
6659 | if (!sv) | |
6660 | return; | |
b23a5f78 GB |
6661 | if (SvGMAGICAL(sv)) |
6662 | mg_get(sv); | |
ed6116ce | 6663 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
6664 | if (SvIsCOW(sv)) |
6665 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 6666 | if (SvREADONLY(sv)) { |
3280af22 | 6667 | if (PL_curcop != &PL_compiling) |
cea2e8a9 | 6668 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 6669 | } |
a0d0e21e | 6670 | if (SvROK(sv)) { |
b5be31e9 | 6671 | IV i; |
9e7bc3e8 JD |
6672 | if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) |
6673 | return; | |
56431972 | 6674 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
6675 | sv_unref(sv); |
6676 | sv_setiv(sv, i); | |
a0d0e21e | 6677 | } |
ed6116ce | 6678 | } |
8990e307 | 6679 | flags = SvFLAGS(sv); |
28e5dec8 JH |
6680 | if ((flags & (SVp_NOK|SVp_IOK)) == SVp_NOK) { |
6681 | /* It's (privately or publicly) a float, but not tested as an | |
6682 | integer, so test it to see. */ | |
d460ef45 | 6683 | (void) SvIV(sv); |
28e5dec8 JH |
6684 | flags = SvFLAGS(sv); |
6685 | } | |
6686 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { | |
6687 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 6688 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 6689 | oops_its_int: |
59d8ce62 | 6690 | #endif |
25da4f38 IZ |
6691 | if (SvIsUV(sv)) { |
6692 | if (SvUVX(sv) == UV_MAX) | |
a1e868e7 | 6693 | sv_setnv(sv, UV_MAX_P1); |
25da4f38 IZ |
6694 | else |
6695 | (void)SvIOK_only_UV(sv); | |
6696 | ++SvUVX(sv); | |
6697 | } else { | |
6698 | if (SvIVX(sv) == IV_MAX) | |
28e5dec8 | 6699 | sv_setuv(sv, (UV)IV_MAX + 1); |
25da4f38 IZ |
6700 | else { |
6701 | (void)SvIOK_only(sv); | |
6702 | ++SvIVX(sv); | |
1c846c1f | 6703 | } |
55497cff | 6704 | } |
79072805 LW |
6705 | return; |
6706 | } | |
28e5dec8 JH |
6707 | if (flags & SVp_NOK) { |
6708 | (void)SvNOK_only(sv); | |
6709 | SvNVX(sv) += 1.0; | |
6710 | return; | |
6711 | } | |
6712 | ||
8990e307 | 6713 | if (!(flags & SVp_POK) || !*SvPVX(sv)) { |
28e5dec8 JH |
6714 | if ((flags & SVTYPEMASK) < SVt_PVIV) |
6715 | sv_upgrade(sv, SVt_IV); | |
6716 | (void)SvIOK_only(sv); | |
6717 | SvIVX(sv) = 1; | |
79072805 LW |
6718 | return; |
6719 | } | |
463ee0b2 | 6720 | d = SvPVX(sv); |
79072805 LW |
6721 | while (isALPHA(*d)) d++; |
6722 | while (isDIGIT(*d)) d++; | |
6723 | if (*d) { | |
28e5dec8 | 6724 | #ifdef PERL_PRESERVE_IVUV |
d1be9408 | 6725 | /* Got to punt this as an integer if needs be, but we don't issue |
28e5dec8 JH |
6726 | warnings. Probably ought to make the sv_iv_please() that does |
6727 | the conversion if possible, and silently. */ | |
c2988b20 | 6728 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
6729 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
6730 | /* Need to try really hard to see if it's an integer. | |
6731 | 9.22337203685478e+18 is an integer. | |
6732 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
6733 | so $a="9.22337203685478e+18"; $a+0; $a++ | |
6734 | needs to be the same as $a="9.22337203685478e+18"; $a++ | |
6735 | or we go insane. */ | |
d460ef45 | 6736 | |
28e5dec8 JH |
6737 | (void) sv_2iv(sv); |
6738 | if (SvIOK(sv)) | |
6739 | goto oops_its_int; | |
6740 | ||
6741 | /* sv_2iv *should* have made this an NV */ | |
6742 | if (flags & SVp_NOK) { | |
6743 | (void)SvNOK_only(sv); | |
6744 | SvNVX(sv) += 1.0; | |
6745 | return; | |
6746 | } | |
6747 | /* I don't think we can get here. Maybe I should assert this | |
6748 | And if we do get here I suspect that sv_setnv will croak. NWC | |
6749 | Fall through. */ | |
6750 | #if defined(USE_LONG_DOUBLE) | |
6751 | DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_inc punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%"PERL_PRIgldbl"\n", | |
6752 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); | |
6753 | #else | |
1779d84d | 6754 | DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_inc punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%"NVgf"\n", |
28e5dec8 JH |
6755 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); |
6756 | #endif | |
6757 | } | |
6758 | #endif /* PERL_PRESERVE_IVUV */ | |
6759 | sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); | |
79072805 LW |
6760 | return; |
6761 | } | |
6762 | d--; | |
463ee0b2 | 6763 | while (d >= SvPVX(sv)) { |
79072805 LW |
6764 | if (isDIGIT(*d)) { |
6765 | if (++*d <= '9') | |
6766 | return; | |
6767 | *(d--) = '0'; | |
6768 | } | |
6769 | else { | |
9d116dd7 JH |
6770 | #ifdef EBCDIC |
6771 | /* MKS: The original code here died if letters weren't consecutive. | |
6772 | * at least it didn't have to worry about non-C locales. The | |
6773 | * new code assumes that ('z'-'a')==('Z'-'A'), letters are | |
1c846c1f | 6774 | * arranged in order (although not consecutively) and that only |
9d116dd7 JH |
6775 | * [A-Za-z] are accepted by isALPHA in the C locale. |
6776 | */ | |
6777 | if (*d != 'z' && *d != 'Z') { | |
6778 | do { ++*d; } while (!isALPHA(*d)); | |
6779 | return; | |
6780 | } | |
6781 | *(d--) -= 'z' - 'a'; | |
6782 | #else | |
79072805 LW |
6783 | ++*d; |
6784 | if (isALPHA(*d)) | |
6785 | return; | |
6786 | *(d--) -= 'z' - 'a' + 1; | |
9d116dd7 | 6787 | #endif |
79072805 LW |
6788 | } |
6789 | } | |
6790 | /* oh,oh, the number grew */ | |
6791 | SvGROW(sv, SvCUR(sv) + 2); | |
6792 | SvCUR(sv)++; | |
463ee0b2 | 6793 | for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--) |
79072805 LW |
6794 | *d = d[-1]; |
6795 | if (isDIGIT(d[1])) | |
6796 | *d = '1'; | |
6797 | else | |
6798 | *d = d[1]; | |
6799 | } | |
6800 | ||
954c1994 GS |
6801 | /* |
6802 | =for apidoc sv_dec | |
6803 | ||
645c22ef DM |
6804 | Auto-decrement of the value in the SV, doing string to numeric conversion |
6805 | if necessary. Handles 'get' magic. | |
954c1994 GS |
6806 | |
6807 | =cut | |
6808 | */ | |
6809 | ||
79072805 | 6810 | void |
864dbfa3 | 6811 | Perl_sv_dec(pTHX_ register SV *sv) |
79072805 | 6812 | { |
463ee0b2 LW |
6813 | int flags; |
6814 | ||
79072805 LW |
6815 | if (!sv) |
6816 | return; | |
b23a5f78 GB |
6817 | if (SvGMAGICAL(sv)) |
6818 | mg_get(sv); | |
ed6116ce | 6819 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
6820 | if (SvIsCOW(sv)) |
6821 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 6822 | if (SvREADONLY(sv)) { |
3280af22 | 6823 | if (PL_curcop != &PL_compiling) |
cea2e8a9 | 6824 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 6825 | } |
a0d0e21e | 6826 | if (SvROK(sv)) { |
b5be31e9 | 6827 | IV i; |
9e7bc3e8 JD |
6828 | if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) |
6829 | return; | |
56431972 | 6830 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
6831 | sv_unref(sv); |
6832 | sv_setiv(sv, i); | |
a0d0e21e | 6833 | } |
ed6116ce | 6834 | } |
28e5dec8 JH |
6835 | /* Unlike sv_inc we don't have to worry about string-never-numbers |
6836 | and keeping them magic. But we mustn't warn on punting */ | |
8990e307 | 6837 | flags = SvFLAGS(sv); |
28e5dec8 JH |
6838 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { |
6839 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 6840 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 6841 | oops_its_int: |
59d8ce62 | 6842 | #endif |
25da4f38 IZ |
6843 | if (SvIsUV(sv)) { |
6844 | if (SvUVX(sv) == 0) { | |
6845 | (void)SvIOK_only(sv); | |
6846 | SvIVX(sv) = -1; | |
6847 | } | |
6848 | else { | |
6849 | (void)SvIOK_only_UV(sv); | |
6850 | --SvUVX(sv); | |
1c846c1f | 6851 | } |
25da4f38 IZ |
6852 | } else { |
6853 | if (SvIVX(sv) == IV_MIN) | |
65202027 | 6854 | sv_setnv(sv, (NV)IV_MIN - 1.0); |
25da4f38 IZ |
6855 | else { |
6856 | (void)SvIOK_only(sv); | |
6857 | --SvIVX(sv); | |
1c846c1f | 6858 | } |
55497cff | 6859 | } |
6860 | return; | |
6861 | } | |
28e5dec8 JH |
6862 | if (flags & SVp_NOK) { |
6863 | SvNVX(sv) -= 1.0; | |
6864 | (void)SvNOK_only(sv); | |
6865 | return; | |
6866 | } | |
8990e307 | 6867 | if (!(flags & SVp_POK)) { |
4633a7c4 LW |
6868 | if ((flags & SVTYPEMASK) < SVt_PVNV) |
6869 | sv_upgrade(sv, SVt_NV); | |
463ee0b2 | 6870 | SvNVX(sv) = -1.0; |
a0d0e21e | 6871 | (void)SvNOK_only(sv); |
79072805 LW |
6872 | return; |
6873 | } | |
28e5dec8 JH |
6874 | #ifdef PERL_PRESERVE_IVUV |
6875 | { | |
c2988b20 | 6876 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
6877 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
6878 | /* Need to try really hard to see if it's an integer. | |
6879 | 9.22337203685478e+18 is an integer. | |
6880 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
6881 | so $a="9.22337203685478e+18"; $a+0; $a-- | |
6882 | needs to be the same as $a="9.22337203685478e+18"; $a-- | |
6883 | or we go insane. */ | |
d460ef45 | 6884 | |
28e5dec8 JH |
6885 | (void) sv_2iv(sv); |
6886 | if (SvIOK(sv)) | |
6887 | goto oops_its_int; | |
6888 | ||
6889 | /* sv_2iv *should* have made this an NV */ | |
6890 | if (flags & SVp_NOK) { | |
6891 | (void)SvNOK_only(sv); | |
6892 | SvNVX(sv) -= 1.0; | |
6893 | return; | |
6894 | } | |
6895 | /* I don't think we can get here. Maybe I should assert this | |
6896 | And if we do get here I suspect that sv_setnv will croak. NWC | |
6897 | Fall through. */ | |
6898 | #if defined(USE_LONG_DOUBLE) | |
6899 | DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_dec punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%"PERL_PRIgldbl"\n", | |
6900 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); | |
6901 | #else | |
1779d84d | 6902 | DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_dec punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%"NVgf"\n", |
28e5dec8 JH |
6903 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); |
6904 | #endif | |
6905 | } | |
6906 | } | |
6907 | #endif /* PERL_PRESERVE_IVUV */ | |
097ee67d | 6908 | sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */ |
79072805 LW |
6909 | } |
6910 | ||
954c1994 GS |
6911 | /* |
6912 | =for apidoc sv_mortalcopy | |
6913 | ||
645c22ef | 6914 | Creates a new SV which is a copy of the original SV (using C<sv_setsv>). |
d4236ebc DM |
6915 | The new SV is marked as mortal. It will be destroyed "soon", either by an |
6916 | explicit call to FREETMPS, or by an implicit call at places such as | |
6917 | statement boundaries. See also C<sv_newmortal> and C<sv_2mortal>. | |
954c1994 GS |
6918 | |
6919 | =cut | |
6920 | */ | |
6921 | ||
79072805 LW |
6922 | /* Make a string that will exist for the duration of the expression |
6923 | * evaluation. Actually, it may have to last longer than that, but | |
6924 | * hopefully we won't free it until it has been assigned to a | |
6925 | * permanent location. */ | |
6926 | ||
6927 | SV * | |
864dbfa3 | 6928 | Perl_sv_mortalcopy(pTHX_ SV *oldstr) |
79072805 | 6929 | { |
463ee0b2 | 6930 | register SV *sv; |
b881518d | 6931 | |
4561caa4 | 6932 | new_SV(sv); |
79072805 | 6933 | sv_setsv(sv,oldstr); |
677b06e3 GS |
6934 | EXTEND_MORTAL(1); |
6935 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 LW |
6936 | SvTEMP_on(sv); |
6937 | return sv; | |
6938 | } | |
6939 | ||
954c1994 GS |
6940 | /* |
6941 | =for apidoc sv_newmortal | |
6942 | ||
645c22ef | 6943 | Creates a new null SV which is mortal. The reference count of the SV is |
d4236ebc DM |
6944 | set to 1. It will be destroyed "soon", either by an explicit call to |
6945 | FREETMPS, or by an implicit call at places such as statement boundaries. | |
6946 | See also C<sv_mortalcopy> and C<sv_2mortal>. | |
954c1994 GS |
6947 | |
6948 | =cut | |
6949 | */ | |
6950 | ||
8990e307 | 6951 | SV * |
864dbfa3 | 6952 | Perl_sv_newmortal(pTHX) |
8990e307 LW |
6953 | { |
6954 | register SV *sv; | |
6955 | ||
4561caa4 | 6956 | new_SV(sv); |
8990e307 | 6957 | SvFLAGS(sv) = SVs_TEMP; |
677b06e3 GS |
6958 | EXTEND_MORTAL(1); |
6959 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
79072805 LW |
6960 | return sv; |
6961 | } | |
6962 | ||
954c1994 GS |
6963 | /* |
6964 | =for apidoc sv_2mortal | |
6965 | ||
d4236ebc DM |
6966 | Marks an existing SV as mortal. The SV will be destroyed "soon", either |
6967 | by an explicit call to FREETMPS, or by an implicit call at places such as | |
6968 | statement boundaries. See also C<sv_newmortal> and C<sv_mortalcopy>. | |
954c1994 GS |
6969 | |
6970 | =cut | |
6971 | */ | |
6972 | ||
79072805 | 6973 | SV * |
864dbfa3 | 6974 | Perl_sv_2mortal(pTHX_ register SV *sv) |
79072805 LW |
6975 | { |
6976 | if (!sv) | |
6977 | return sv; | |
d689ffdd | 6978 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) |
11162842 | 6979 | return sv; |
677b06e3 GS |
6980 | EXTEND_MORTAL(1); |
6981 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 | 6982 | SvTEMP_on(sv); |
79072805 LW |
6983 | return sv; |
6984 | } | |
6985 | ||
954c1994 GS |
6986 | /* |
6987 | =for apidoc newSVpv | |
6988 | ||
6989 | Creates a new SV and copies a string into it. The reference count for the | |
6990 | SV is set to 1. If C<len> is zero, Perl will compute the length using | |
6991 | strlen(). For efficiency, consider using C<newSVpvn> instead. | |
6992 | ||
6993 | =cut | |
6994 | */ | |
6995 | ||
79072805 | 6996 | SV * |
864dbfa3 | 6997 | Perl_newSVpv(pTHX_ const char *s, STRLEN len) |
79072805 | 6998 | { |
463ee0b2 | 6999 | register SV *sv; |
79072805 | 7000 | |
4561caa4 | 7001 | new_SV(sv); |
79072805 LW |
7002 | if (!len) |
7003 | len = strlen(s); | |
7004 | sv_setpvn(sv,s,len); | |
7005 | return sv; | |
7006 | } | |
7007 | ||
954c1994 GS |
7008 | /* |
7009 | =for apidoc newSVpvn | |
7010 | ||
7011 | Creates a new SV and copies a string into it. The reference count for the | |
1c846c1f | 7012 | SV is set to 1. Note that if C<len> is zero, Perl will create a zero length |
954c1994 GS |
7013 | string. You are responsible for ensuring that the source string is at least |
7014 | C<len> bytes long. | |
7015 | ||
7016 | =cut | |
7017 | */ | |
7018 | ||
9da1e3b5 | 7019 | SV * |
864dbfa3 | 7020 | Perl_newSVpvn(pTHX_ const char *s, STRLEN len) |
9da1e3b5 MUN |
7021 | { |
7022 | register SV *sv; | |
7023 | ||
7024 | new_SV(sv); | |
9da1e3b5 MUN |
7025 | sv_setpvn(sv,s,len); |
7026 | return sv; | |
7027 | } | |
7028 | ||
1c846c1f NIS |
7029 | /* |
7030 | =for apidoc newSVpvn_share | |
7031 | ||
645c22ef DM |
7032 | Creates a new SV with its SvPVX pointing to a shared string in the string |
7033 | table. If the string does not already exist in the table, it is created | |
7034 | first. Turns on READONLY and FAKE. The string's hash is stored in the UV | |
7035 | slot of the SV; if the C<hash> parameter is non-zero, that value is used; | |
7036 | otherwise the hash is computed. The idea here is that as the string table | |
7037 | is used for shared hash keys these strings will have SvPVX == HeKEY and | |
7038 | hash lookup will avoid string compare. | |
1c846c1f NIS |
7039 | |
7040 | =cut | |
7041 | */ | |
7042 | ||
7043 | SV * | |
c3654f1a | 7044 | Perl_newSVpvn_share(pTHX_ const char *src, I32 len, U32 hash) |
1c846c1f NIS |
7045 | { |
7046 | register SV *sv; | |
c3654f1a IH |
7047 | bool is_utf8 = FALSE; |
7048 | if (len < 0) { | |
77caf834 | 7049 | STRLEN tmplen = -len; |
c3654f1a | 7050 | is_utf8 = TRUE; |
75a54232 JH |
7051 | /* See the note in hv.c:hv_fetch() --jhi */ |
7052 | src = (char*)bytes_from_utf8((U8*)src, &tmplen, &is_utf8); | |
7053 | len = tmplen; | |
7054 | } | |
1c846c1f | 7055 | if (!hash) |
5afd6d42 | 7056 | PERL_HASH(hash, src, len); |
1c846c1f NIS |
7057 | new_SV(sv); |
7058 | sv_upgrade(sv, SVt_PVIV); | |
c3654f1a | 7059 | SvPVX(sv) = sharepvn(src, is_utf8?-len:len, hash); |
1c846c1f NIS |
7060 | SvCUR(sv) = len; |
7061 | SvUVX(sv) = hash; | |
7062 | SvLEN(sv) = 0; | |
7063 | SvREADONLY_on(sv); | |
7064 | SvFAKE_on(sv); | |
7065 | SvPOK_on(sv); | |
c3654f1a IH |
7066 | if (is_utf8) |
7067 | SvUTF8_on(sv); | |
1c846c1f NIS |
7068 | return sv; |
7069 | } | |
7070 | ||
645c22ef | 7071 | |
cea2e8a9 | 7072 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
7073 | |
7074 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
7075 | * version of the main function, (which may itself be aliased to us). | |
7076 | * Don't access this version directly. | |
7077 | */ | |
7078 | ||
46fc3d4c | 7079 | SV * |
cea2e8a9 | 7080 | Perl_newSVpvf_nocontext(const char* pat, ...) |
46fc3d4c | 7081 | { |
cea2e8a9 | 7082 | dTHX; |
46fc3d4c | 7083 | register SV *sv; |
7084 | va_list args; | |
46fc3d4c | 7085 | va_start(args, pat); |
c5be433b | 7086 | sv = vnewSVpvf(pat, &args); |
46fc3d4c | 7087 | va_end(args); |
7088 | return sv; | |
7089 | } | |
cea2e8a9 | 7090 | #endif |
46fc3d4c | 7091 | |
954c1994 GS |
7092 | /* |
7093 | =for apidoc newSVpvf | |
7094 | ||
645c22ef | 7095 | Creates a new SV and initializes it with the string formatted like |
954c1994 GS |
7096 | C<sprintf>. |
7097 | ||
7098 | =cut | |
7099 | */ | |
7100 | ||
cea2e8a9 GS |
7101 | SV * |
7102 | Perl_newSVpvf(pTHX_ const char* pat, ...) | |
7103 | { | |
7104 | register SV *sv; | |
7105 | va_list args; | |
cea2e8a9 | 7106 | va_start(args, pat); |
c5be433b | 7107 | sv = vnewSVpvf(pat, &args); |
cea2e8a9 GS |
7108 | va_end(args); |
7109 | return sv; | |
7110 | } | |
46fc3d4c | 7111 | |
645c22ef DM |
7112 | /* backend for newSVpvf() and newSVpvf_nocontext() */ |
7113 | ||
79072805 | 7114 | SV * |
c5be433b GS |
7115 | Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args) |
7116 | { | |
7117 | register SV *sv; | |
7118 | new_SV(sv); | |
7119 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
7120 | return sv; | |
7121 | } | |
7122 | ||
954c1994 GS |
7123 | /* |
7124 | =for apidoc newSVnv | |
7125 | ||
7126 | Creates a new SV and copies a floating point value into it. | |
7127 | The reference count for the SV is set to 1. | |
7128 | ||
7129 | =cut | |
7130 | */ | |
7131 | ||
c5be433b | 7132 | SV * |
65202027 | 7133 | Perl_newSVnv(pTHX_ NV n) |
79072805 | 7134 | { |
463ee0b2 | 7135 | register SV *sv; |
79072805 | 7136 | |
4561caa4 | 7137 | new_SV(sv); |
79072805 LW |
7138 | sv_setnv(sv,n); |
7139 | return sv; | |
7140 | } | |
7141 | ||
954c1994 GS |
7142 | /* |
7143 | =for apidoc newSViv | |
7144 | ||
7145 | Creates a new SV and copies an integer into it. The reference count for the | |
7146 | SV is set to 1. | |
7147 | ||
7148 | =cut | |
7149 | */ | |
7150 | ||
79072805 | 7151 | SV * |
864dbfa3 | 7152 | Perl_newSViv(pTHX_ IV i) |
79072805 | 7153 | { |
463ee0b2 | 7154 | register SV *sv; |
79072805 | 7155 | |
4561caa4 | 7156 | new_SV(sv); |
79072805 LW |
7157 | sv_setiv(sv,i); |
7158 | return sv; | |
7159 | } | |
7160 | ||
954c1994 | 7161 | /* |
1a3327fb JH |
7162 | =for apidoc newSVuv |
7163 | ||
7164 | Creates a new SV and copies an unsigned integer into it. | |
7165 | The reference count for the SV is set to 1. | |
7166 | ||
7167 | =cut | |
7168 | */ | |
7169 | ||
7170 | SV * | |
7171 | Perl_newSVuv(pTHX_ UV u) | |
7172 | { | |
7173 | register SV *sv; | |
7174 | ||
7175 | new_SV(sv); | |
7176 | sv_setuv(sv,u); | |
7177 | return sv; | |
7178 | } | |
7179 | ||
7180 | /* | |
954c1994 GS |
7181 | =for apidoc newRV_noinc |
7182 | ||
7183 | Creates an RV wrapper for an SV. The reference count for the original | |
7184 | SV is B<not> incremented. | |
7185 | ||
7186 | =cut | |
7187 | */ | |
7188 | ||
2304df62 | 7189 | SV * |
864dbfa3 | 7190 | Perl_newRV_noinc(pTHX_ SV *tmpRef) |
2304df62 AD |
7191 | { |
7192 | register SV *sv; | |
7193 | ||
4561caa4 | 7194 | new_SV(sv); |
2304df62 | 7195 | sv_upgrade(sv, SVt_RV); |
76e3520e | 7196 | SvTEMP_off(tmpRef); |
d689ffdd | 7197 | SvRV(sv) = tmpRef; |
2304df62 | 7198 | SvROK_on(sv); |
2304df62 AD |
7199 | return sv; |
7200 | } | |
7201 | ||
ff276b08 | 7202 | /* newRV_inc is the official function name to use now. |
645c22ef DM |
7203 | * newRV_inc is in fact #defined to newRV in sv.h |
7204 | */ | |
7205 | ||
5f05dabc | 7206 | SV * |
864dbfa3 | 7207 | Perl_newRV(pTHX_ SV *tmpRef) |
5f05dabc | 7208 | { |
5f6447b6 | 7209 | return newRV_noinc(SvREFCNT_inc(tmpRef)); |
5f05dabc | 7210 | } |
5f05dabc | 7211 | |
954c1994 GS |
7212 | /* |
7213 | =for apidoc newSVsv | |
7214 | ||
7215 | Creates a new SV which is an exact duplicate of the original SV. | |
645c22ef | 7216 | (Uses C<sv_setsv>). |
954c1994 GS |
7217 | |
7218 | =cut | |
7219 | */ | |
7220 | ||
79072805 | 7221 | SV * |
864dbfa3 | 7222 | Perl_newSVsv(pTHX_ register SV *old) |
79072805 | 7223 | { |
463ee0b2 | 7224 | register SV *sv; |
79072805 LW |
7225 | |
7226 | if (!old) | |
7227 | return Nullsv; | |
8990e307 | 7228 | if (SvTYPE(old) == SVTYPEMASK) { |
0453d815 | 7229 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 7230 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "semi-panic: attempt to dup freed string"); |
79072805 LW |
7231 | return Nullsv; |
7232 | } | |
4561caa4 | 7233 | new_SV(sv); |
ff68c719 | 7234 | if (SvTEMP(old)) { |
7235 | SvTEMP_off(old); | |
463ee0b2 | 7236 | sv_setsv(sv,old); |
ff68c719 | 7237 | SvTEMP_on(old); |
79072805 LW |
7238 | } |
7239 | else | |
463ee0b2 LW |
7240 | sv_setsv(sv,old); |
7241 | return sv; | |
79072805 LW |
7242 | } |
7243 | ||
645c22ef DM |
7244 | /* |
7245 | =for apidoc sv_reset | |
7246 | ||
7247 | Underlying implementation for the C<reset> Perl function. | |
7248 | Note that the perl-level function is vaguely deprecated. | |
7249 | ||
7250 | =cut | |
7251 | */ | |
7252 | ||
79072805 | 7253 | void |
864dbfa3 | 7254 | Perl_sv_reset(pTHX_ register char *s, HV *stash) |
79072805 LW |
7255 | { |
7256 | register HE *entry; | |
7257 | register GV *gv; | |
7258 | register SV *sv; | |
7259 | register I32 i; | |
7260 | register PMOP *pm; | |
7261 | register I32 max; | |
4802d5d7 | 7262 | char todo[PERL_UCHAR_MAX+1]; |
79072805 | 7263 | |
49d8d3a1 MB |
7264 | if (!stash) |
7265 | return; | |
7266 | ||
79072805 LW |
7267 | if (!*s) { /* reset ?? searches */ |
7268 | for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) { | |
48c036b1 | 7269 | pm->op_pmdynflags &= ~PMdf_USED; |
79072805 LW |
7270 | } |
7271 | return; | |
7272 | } | |
7273 | ||
7274 | /* reset variables */ | |
7275 | ||
7276 | if (!HvARRAY(stash)) | |
7277 | return; | |
463ee0b2 LW |
7278 | |
7279 | Zero(todo, 256, char); | |
79072805 | 7280 | while (*s) { |
4802d5d7 | 7281 | i = (unsigned char)*s; |
79072805 LW |
7282 | if (s[1] == '-') { |
7283 | s += 2; | |
7284 | } | |
4802d5d7 | 7285 | max = (unsigned char)*s++; |
79072805 | 7286 | for ( ; i <= max; i++) { |
463ee0b2 LW |
7287 | todo[i] = 1; |
7288 | } | |
a0d0e21e | 7289 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
79072805 | 7290 | for (entry = HvARRAY(stash)[i]; |
9e35f4b3 GS |
7291 | entry; |
7292 | entry = HeNEXT(entry)) | |
7293 | { | |
1edc1566 | 7294 | if (!todo[(U8)*HeKEY(entry)]) |
463ee0b2 | 7295 | continue; |
1edc1566 | 7296 | gv = (GV*)HeVAL(entry); |
79072805 | 7297 | sv = GvSV(gv); |
9e35f4b3 GS |
7298 | if (SvTHINKFIRST(sv)) { |
7299 | if (!SvREADONLY(sv) && SvROK(sv)) | |
7300 | sv_unref(sv); | |
7301 | continue; | |
7302 | } | |
a0d0e21e | 7303 | (void)SvOK_off(sv); |
79072805 LW |
7304 | if (SvTYPE(sv) >= SVt_PV) { |
7305 | SvCUR_set(sv, 0); | |
463ee0b2 LW |
7306 | if (SvPVX(sv) != Nullch) |
7307 | *SvPVX(sv) = '\0'; | |
44a8e56a | 7308 | SvTAINT(sv); |
79072805 LW |
7309 | } |
7310 | if (GvAV(gv)) { | |
7311 | av_clear(GvAV(gv)); | |
7312 | } | |
44a8e56a | 7313 | if (GvHV(gv) && !HvNAME(GvHV(gv))) { |
463ee0b2 | 7314 | hv_clear(GvHV(gv)); |
fa6a1c44 | 7315 | #ifdef USE_ENVIRON_ARRAY |
4efc5df6 GS |
7316 | if (gv == PL_envgv |
7317 | # ifdef USE_ITHREADS | |
7318 | && PL_curinterp == aTHX | |
7319 | # endif | |
7320 | ) | |
7321 | { | |
79072805 | 7322 | environ[0] = Nullch; |
4efc5df6 | 7323 | } |
a0d0e21e | 7324 | #endif |
79072805 LW |
7325 | } |
7326 | } | |
7327 | } | |
7328 | } | |
7329 | } | |
7330 | ||
645c22ef DM |
7331 | /* |
7332 | =for apidoc sv_2io | |
7333 | ||
7334 | Using various gambits, try to get an IO from an SV: the IO slot if its a | |
7335 | GV; or the recursive result if we're an RV; or the IO slot of the symbol | |
7336 | named after the PV if we're a string. | |
7337 | ||
7338 | =cut | |
7339 | */ | |
7340 | ||
46fc3d4c | 7341 | IO* |
864dbfa3 | 7342 | Perl_sv_2io(pTHX_ SV *sv) |
46fc3d4c | 7343 | { |
7344 | IO* io; | |
7345 | GV* gv; | |
2d8e6c8d | 7346 | STRLEN n_a; |
46fc3d4c | 7347 | |
7348 | switch (SvTYPE(sv)) { | |
7349 | case SVt_PVIO: | |
7350 | io = (IO*)sv; | |
7351 | break; | |
7352 | case SVt_PVGV: | |
7353 | gv = (GV*)sv; | |
7354 | io = GvIO(gv); | |
7355 | if (!io) | |
cea2e8a9 | 7356 | Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv)); |
46fc3d4c | 7357 | break; |
7358 | default: | |
7359 | if (!SvOK(sv)) | |
cea2e8a9 | 7360 | Perl_croak(aTHX_ PL_no_usym, "filehandle"); |
46fc3d4c | 7361 | if (SvROK(sv)) |
7362 | return sv_2io(SvRV(sv)); | |
2d8e6c8d | 7363 | gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO); |
46fc3d4c | 7364 | if (gv) |
7365 | io = GvIO(gv); | |
7366 | else | |
7367 | io = 0; | |
7368 | if (!io) | |
35c1215d | 7369 | Perl_croak(aTHX_ "Bad filehandle: %"SVf, sv); |
46fc3d4c | 7370 | break; |
7371 | } | |
7372 | return io; | |
7373 | } | |
7374 | ||
645c22ef DM |
7375 | /* |
7376 | =for apidoc sv_2cv | |
7377 | ||
7378 | Using various gambits, try to get a CV from an SV; in addition, try if | |
7379 | possible to set C<*st> and C<*gvp> to the stash and GV associated with it. | |
7380 | ||
7381 | =cut | |
7382 | */ | |
7383 | ||
79072805 | 7384 | CV * |
864dbfa3 | 7385 | Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref) |
79072805 | 7386 | { |
c04a4dfe JH |
7387 | GV *gv = Nullgv; |
7388 | CV *cv = Nullcv; | |
2d8e6c8d | 7389 | STRLEN n_a; |
79072805 LW |
7390 | |
7391 | if (!sv) | |
93a17b20 | 7392 | return *gvp = Nullgv, Nullcv; |
79072805 | 7393 | switch (SvTYPE(sv)) { |
79072805 LW |
7394 | case SVt_PVCV: |
7395 | *st = CvSTASH(sv); | |
7396 | *gvp = Nullgv; | |
7397 | return (CV*)sv; | |
7398 | case SVt_PVHV: | |
7399 | case SVt_PVAV: | |
7400 | *gvp = Nullgv; | |
7401 | return Nullcv; | |
8990e307 LW |
7402 | case SVt_PVGV: |
7403 | gv = (GV*)sv; | |
a0d0e21e | 7404 | *gvp = gv; |
8990e307 LW |
7405 | *st = GvESTASH(gv); |
7406 | goto fix_gv; | |
7407 | ||
79072805 | 7408 | default: |
a0d0e21e LW |
7409 | if (SvGMAGICAL(sv)) |
7410 | mg_get(sv); | |
7411 | if (SvROK(sv)) { | |
f5284f61 IZ |
7412 | SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */ |
7413 | tryAMAGICunDEREF(to_cv); | |
7414 | ||
62f274bf GS |
7415 | sv = SvRV(sv); |
7416 | if (SvTYPE(sv) == SVt_PVCV) { | |
7417 | cv = (CV*)sv; | |
7418 | *gvp = Nullgv; | |
7419 | *st = CvSTASH(cv); | |
7420 | return cv; | |
7421 | } | |
7422 | else if(isGV(sv)) | |
7423 | gv = (GV*)sv; | |
7424 | else | |
cea2e8a9 | 7425 | Perl_croak(aTHX_ "Not a subroutine reference"); |
a0d0e21e | 7426 | } |
62f274bf | 7427 | else if (isGV(sv)) |
79072805 LW |
7428 | gv = (GV*)sv; |
7429 | else | |
2d8e6c8d | 7430 | gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV); |
79072805 LW |
7431 | *gvp = gv; |
7432 | if (!gv) | |
7433 | return Nullcv; | |
7434 | *st = GvESTASH(gv); | |
8990e307 | 7435 | fix_gv: |
8ebc5c01 | 7436 | if (lref && !GvCVu(gv)) { |
4633a7c4 | 7437 | SV *tmpsv; |
748a9306 | 7438 | ENTER; |
4633a7c4 | 7439 | tmpsv = NEWSV(704,0); |
16660edb | 7440 | gv_efullname3(tmpsv, gv, Nullch); |
f6ec51f7 GS |
7441 | /* XXX this is probably not what they think they're getting. |
7442 | * It has the same effect as "sub name;", i.e. just a forward | |
7443 | * declaration! */ | |
774d564b | 7444 | newSUB(start_subparse(FALSE, 0), |
4633a7c4 LW |
7445 | newSVOP(OP_CONST, 0, tmpsv), |
7446 | Nullop, | |
8990e307 | 7447 | Nullop); |
748a9306 | 7448 | LEAVE; |
8ebc5c01 | 7449 | if (!GvCVu(gv)) |
35c1215d NC |
7450 | Perl_croak(aTHX_ "Unable to create sub named \"%"SVf"\"", |
7451 | sv); | |
8990e307 | 7452 | } |
8ebc5c01 | 7453 | return GvCVu(gv); |
79072805 LW |
7454 | } |
7455 | } | |
7456 | ||
c461cf8f JH |
7457 | /* |
7458 | =for apidoc sv_true | |
7459 | ||
7460 | Returns true if the SV has a true value by Perl's rules. | |
645c22ef DM |
7461 | Use the C<SvTRUE> macro instead, which may call C<sv_true()> or may |
7462 | instead use an in-line version. | |
c461cf8f JH |
7463 | |
7464 | =cut | |
7465 | */ | |
7466 | ||
79072805 | 7467 | I32 |
864dbfa3 | 7468 | Perl_sv_true(pTHX_ register SV *sv) |
79072805 | 7469 | { |
8990e307 LW |
7470 | if (!sv) |
7471 | return 0; | |
79072805 | 7472 | if (SvPOK(sv)) { |
4e35701f NIS |
7473 | register XPV* tXpv; |
7474 | if ((tXpv = (XPV*)SvANY(sv)) && | |
c2f1de04 | 7475 | (tXpv->xpv_cur > 1 || |
4e35701f | 7476 | (tXpv->xpv_cur && *tXpv->xpv_pv != '0'))) |
79072805 LW |
7477 | return 1; |
7478 | else | |
7479 | return 0; | |
7480 | } | |
7481 | else { | |
7482 | if (SvIOK(sv)) | |
463ee0b2 | 7483 | return SvIVX(sv) != 0; |
79072805 LW |
7484 | else { |
7485 | if (SvNOK(sv)) | |
463ee0b2 | 7486 | return SvNVX(sv) != 0.0; |
79072805 | 7487 | else |
463ee0b2 | 7488 | return sv_2bool(sv); |
79072805 LW |
7489 | } |
7490 | } | |
7491 | } | |
79072805 | 7492 | |
645c22ef DM |
7493 | /* |
7494 | =for apidoc sv_iv | |
7495 | ||
7496 | A private implementation of the C<SvIVx> macro for compilers which can't | |
7497 | cope with complex macro expressions. Always use the macro instead. | |
7498 | ||
7499 | =cut | |
7500 | */ | |
7501 | ||
ff68c719 | 7502 | IV |
864dbfa3 | 7503 | Perl_sv_iv(pTHX_ register SV *sv) |
85e6fe83 | 7504 | { |
25da4f38 IZ |
7505 | if (SvIOK(sv)) { |
7506 | if (SvIsUV(sv)) | |
7507 | return (IV)SvUVX(sv); | |
ff68c719 | 7508 | return SvIVX(sv); |
25da4f38 | 7509 | } |
ff68c719 | 7510 | return sv_2iv(sv); |
85e6fe83 | 7511 | } |
85e6fe83 | 7512 | |
645c22ef DM |
7513 | /* |
7514 | =for apidoc sv_uv | |
7515 | ||
7516 | A private implementation of the C<SvUVx> macro for compilers which can't | |
7517 | cope with complex macro expressions. Always use the macro instead. | |
7518 | ||
7519 | =cut | |
7520 | */ | |
7521 | ||
ff68c719 | 7522 | UV |
864dbfa3 | 7523 | Perl_sv_uv(pTHX_ register SV *sv) |
ff68c719 | 7524 | { |
25da4f38 IZ |
7525 | if (SvIOK(sv)) { |
7526 | if (SvIsUV(sv)) | |
7527 | return SvUVX(sv); | |
7528 | return (UV)SvIVX(sv); | |
7529 | } | |
ff68c719 | 7530 | return sv_2uv(sv); |
7531 | } | |
85e6fe83 | 7532 | |
645c22ef DM |
7533 | /* |
7534 | =for apidoc sv_nv | |
7535 | ||
7536 | A private implementation of the C<SvNVx> macro for compilers which can't | |
7537 | cope with complex macro expressions. Always use the macro instead. | |
7538 | ||
7539 | =cut | |
7540 | */ | |
7541 | ||
65202027 | 7542 | NV |
864dbfa3 | 7543 | Perl_sv_nv(pTHX_ register SV *sv) |
79072805 | 7544 | { |
ff68c719 | 7545 | if (SvNOK(sv)) |
7546 | return SvNVX(sv); | |
7547 | return sv_2nv(sv); | |
79072805 | 7548 | } |
79072805 | 7549 | |
09540bc3 JH |
7550 | /* sv_pv() is now a macro using SvPV_nolen(); |
7551 | * this function provided for binary compatibility only | |
7552 | */ | |
7553 | ||
7554 | char * | |
7555 | Perl_sv_pv(pTHX_ SV *sv) | |
7556 | { | |
7557 | STRLEN n_a; | |
7558 | ||
7559 | if (SvPOK(sv)) | |
7560 | return SvPVX(sv); | |
7561 | ||
7562 | return sv_2pv(sv, &n_a); | |
7563 | } | |
7564 | ||
645c22ef DM |
7565 | /* |
7566 | =for apidoc sv_pv | |
7567 | ||
baca2b92 | 7568 | Use the C<SvPV_nolen> macro instead |
645c22ef | 7569 | |
645c22ef DM |
7570 | =for apidoc sv_pvn |
7571 | ||
7572 | A private implementation of the C<SvPV> macro for compilers which can't | |
7573 | cope with complex macro expressions. Always use the macro instead. | |
7574 | ||
7575 | =cut | |
7576 | */ | |
7577 | ||
1fa8b10d | 7578 | char * |
864dbfa3 | 7579 | Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp) |
79072805 | 7580 | { |
85e6fe83 LW |
7581 | if (SvPOK(sv)) { |
7582 | *lp = SvCUR(sv); | |
a0d0e21e | 7583 | return SvPVX(sv); |
85e6fe83 | 7584 | } |
463ee0b2 | 7585 | return sv_2pv(sv, lp); |
79072805 | 7586 | } |
79072805 | 7587 | |
6e9d1081 NC |
7588 | |
7589 | char * | |
7590 | Perl_sv_pvn_nomg(pTHX_ register SV *sv, STRLEN *lp) | |
7591 | { | |
7592 | if (SvPOK(sv)) { | |
7593 | *lp = SvCUR(sv); | |
7594 | return SvPVX(sv); | |
7595 | } | |
7596 | return sv_2pv_flags(sv, lp, 0); | |
7597 | } | |
7598 | ||
09540bc3 JH |
7599 | /* sv_pvn_force() is now a macro using Perl_sv_pvn_force_flags(); |
7600 | * this function provided for binary compatibility only | |
7601 | */ | |
7602 | ||
7603 | char * | |
7604 | Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp) | |
7605 | { | |
7606 | return sv_pvn_force_flags(sv, lp, SV_GMAGIC); | |
7607 | } | |
7608 | ||
c461cf8f JH |
7609 | /* |
7610 | =for apidoc sv_pvn_force | |
7611 | ||
7612 | Get a sensible string out of the SV somehow. | |
645c22ef DM |
7613 | A private implementation of the C<SvPV_force> macro for compilers which |
7614 | can't cope with complex macro expressions. Always use the macro instead. | |
c461cf8f | 7615 | |
8d6d96c1 HS |
7616 | =for apidoc sv_pvn_force_flags |
7617 | ||
7618 | Get a sensible string out of the SV somehow. | |
7619 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<sv> if | |
7620 | appropriate, else not. C<sv_pvn_force> and C<sv_pvn_force_nomg> are | |
7621 | implemented in terms of this function. | |
645c22ef DM |
7622 | You normally want to use the various wrapper macros instead: see |
7623 | C<SvPV_force> and C<SvPV_force_nomg> | |
8d6d96c1 HS |
7624 | |
7625 | =cut | |
7626 | */ | |
7627 | ||
7628 | char * | |
7629 | Perl_sv_pvn_force_flags(pTHX_ SV *sv, STRLEN *lp, I32 flags) | |
7630 | { | |
c04a4dfe | 7631 | char *s = NULL; |
a0d0e21e | 7632 | |
6fc92669 | 7633 | if (SvTHINKFIRST(sv) && !SvROK(sv)) |
765f542d | 7634 | sv_force_normal_flags(sv, 0); |
1c846c1f | 7635 | |
a0d0e21e LW |
7636 | if (SvPOK(sv)) { |
7637 | *lp = SvCUR(sv); | |
7638 | } | |
7639 | else { | |
748a9306 | 7640 | if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) { |
cea2e8a9 | 7641 | Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0), |
53e06cf0 | 7642 | OP_NAME(PL_op)); |
a0d0e21e | 7643 | } |
4633a7c4 | 7644 | else |
8d6d96c1 | 7645 | s = sv_2pv_flags(sv, lp, flags); |
a0d0e21e LW |
7646 | if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */ |
7647 | STRLEN len = *lp; | |
1c846c1f | 7648 | |
a0d0e21e LW |
7649 | if (SvROK(sv)) |
7650 | sv_unref(sv); | |
7651 | (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */ | |
7652 | SvGROW(sv, len + 1); | |
7653 | Move(s,SvPVX(sv),len,char); | |
7654 | SvCUR_set(sv, len); | |
7655 | *SvEND(sv) = '\0'; | |
7656 | } | |
7657 | if (!SvPOK(sv)) { | |
7658 | SvPOK_on(sv); /* validate pointer */ | |
7659 | SvTAINT(sv); | |
1d7c1841 GS |
7660 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
7661 | PTR2UV(sv),SvPVX(sv))); | |
a0d0e21e LW |
7662 | } |
7663 | } | |
7664 | return SvPVX(sv); | |
7665 | } | |
7666 | ||
09540bc3 JH |
7667 | /* sv_pvbyte () is now a macro using Perl_sv_2pv_flags(); |
7668 | * this function provided for binary compatibility only | |
7669 | */ | |
7670 | ||
7671 | char * | |
7672 | Perl_sv_pvbyte(pTHX_ SV *sv) | |
7673 | { | |
7674 | sv_utf8_downgrade(sv,0); | |
7675 | return sv_pv(sv); | |
7676 | } | |
7677 | ||
645c22ef DM |
7678 | /* |
7679 | =for apidoc sv_pvbyte | |
7680 | ||
baca2b92 | 7681 | Use C<SvPVbyte_nolen> instead. |
645c22ef | 7682 | |
645c22ef DM |
7683 | =for apidoc sv_pvbyten |
7684 | ||
7685 | A private implementation of the C<SvPVbyte> macro for compilers | |
7686 | which can't cope with complex macro expressions. Always use the macro | |
7687 | instead. | |
7688 | ||
7689 | =cut | |
7690 | */ | |
7691 | ||
7340a771 GS |
7692 | char * |
7693 | Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp) | |
7694 | { | |
ffebcc3e | 7695 | sv_utf8_downgrade(sv,0); |
7340a771 GS |
7696 | return sv_pvn(sv,lp); |
7697 | } | |
7698 | ||
645c22ef DM |
7699 | /* |
7700 | =for apidoc sv_pvbyten_force | |
7701 | ||
7702 | A private implementation of the C<SvPVbytex_force> macro for compilers | |
7703 | which can't cope with complex macro expressions. Always use the macro | |
7704 | instead. | |
7705 | ||
7706 | =cut | |
7707 | */ | |
7708 | ||
7340a771 GS |
7709 | char * |
7710 | Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp) | |
7711 | { | |
ffebcc3e | 7712 | sv_utf8_downgrade(sv,0); |
7340a771 GS |
7713 | return sv_pvn_force(sv,lp); |
7714 | } | |
7715 | ||
09540bc3 JH |
7716 | /* sv_pvutf8 () is now a macro using Perl_sv_2pv_flags(); |
7717 | * this function provided for binary compatibility only | |
7718 | */ | |
7719 | ||
7720 | char * | |
7721 | Perl_sv_pvutf8(pTHX_ SV *sv) | |
7722 | { | |
7723 | sv_utf8_upgrade(sv); | |
7724 | return sv_pv(sv); | |
7725 | } | |
7726 | ||
645c22ef DM |
7727 | /* |
7728 | =for apidoc sv_pvutf8 | |
7729 | ||
baca2b92 | 7730 | Use the C<SvPVutf8_nolen> macro instead |
645c22ef | 7731 | |
645c22ef DM |
7732 | =for apidoc sv_pvutf8n |
7733 | ||
7734 | A private implementation of the C<SvPVutf8> macro for compilers | |
7735 | which can't cope with complex macro expressions. Always use the macro | |
7736 | instead. | |
7737 | ||
7738 | =cut | |
7739 | */ | |
7740 | ||
7340a771 GS |
7741 | char * |
7742 | Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp) | |
7743 | { | |
560a288e | 7744 | sv_utf8_upgrade(sv); |
7340a771 GS |
7745 | return sv_pvn(sv,lp); |
7746 | } | |
7747 | ||
c461cf8f JH |
7748 | /* |
7749 | =for apidoc sv_pvutf8n_force | |
7750 | ||
645c22ef DM |
7751 | A private implementation of the C<SvPVutf8_force> macro for compilers |
7752 | which can't cope with complex macro expressions. Always use the macro | |
7753 | instead. | |
c461cf8f JH |
7754 | |
7755 | =cut | |
7756 | */ | |
7757 | ||
7340a771 GS |
7758 | char * |
7759 | Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp) | |
7760 | { | |
560a288e | 7761 | sv_utf8_upgrade(sv); |
7340a771 GS |
7762 | return sv_pvn_force(sv,lp); |
7763 | } | |
7764 | ||
c461cf8f JH |
7765 | /* |
7766 | =for apidoc sv_reftype | |
7767 | ||
7768 | Returns a string describing what the SV is a reference to. | |
7769 | ||
7770 | =cut | |
7771 | */ | |
7772 | ||
7340a771 | 7773 | char * |
864dbfa3 | 7774 | Perl_sv_reftype(pTHX_ SV *sv, int ob) |
a0d0e21e | 7775 | { |
c86bf373 | 7776 | if (ob && SvOBJECT(sv)) { |
e27ad1f2 AV |
7777 | if (HvNAME(SvSTASH(sv))) |
7778 | return HvNAME(SvSTASH(sv)); | |
7779 | else | |
7780 | return "__ANON__"; | |
c86bf373 | 7781 | } |
a0d0e21e LW |
7782 | else { |
7783 | switch (SvTYPE(sv)) { | |
7784 | case SVt_NULL: | |
7785 | case SVt_IV: | |
7786 | case SVt_NV: | |
7787 | case SVt_RV: | |
7788 | case SVt_PV: | |
7789 | case SVt_PVIV: | |
7790 | case SVt_PVNV: | |
7791 | case SVt_PVMG: | |
7792 | case SVt_PVBM: | |
439cb1c4 JP |
7793 | if (SvVOK(sv)) |
7794 | return "VSTRING"; | |
a0d0e21e LW |
7795 | if (SvROK(sv)) |
7796 | return "REF"; | |
7797 | else | |
7798 | return "SCALAR"; | |
dd28f7bb | 7799 | case SVt_PVLV: return SvROK(sv) ? "REF" : "LVALUE"; |
a0d0e21e LW |
7800 | case SVt_PVAV: return "ARRAY"; |
7801 | case SVt_PVHV: return "HASH"; | |
7802 | case SVt_PVCV: return "CODE"; | |
7803 | case SVt_PVGV: return "GLOB"; | |
1d2dff63 | 7804 | case SVt_PVFM: return "FORMAT"; |
27f9d8f3 | 7805 | case SVt_PVIO: return "IO"; |
a0d0e21e LW |
7806 | default: return "UNKNOWN"; |
7807 | } | |
7808 | } | |
7809 | } | |
7810 | ||
954c1994 GS |
7811 | /* |
7812 | =for apidoc sv_isobject | |
7813 | ||
7814 | Returns a boolean indicating whether the SV is an RV pointing to a blessed | |
7815 | object. If the SV is not an RV, or if the object is not blessed, then this | |
7816 | will return false. | |
7817 | ||
7818 | =cut | |
7819 | */ | |
7820 | ||
463ee0b2 | 7821 | int |
864dbfa3 | 7822 | Perl_sv_isobject(pTHX_ SV *sv) |
85e6fe83 | 7823 | { |
68dc0745 | 7824 | if (!sv) |
7825 | return 0; | |
7826 | if (SvGMAGICAL(sv)) | |
7827 | mg_get(sv); | |
85e6fe83 LW |
7828 | if (!SvROK(sv)) |
7829 | return 0; | |
7830 | sv = (SV*)SvRV(sv); | |
7831 | if (!SvOBJECT(sv)) | |
7832 | return 0; | |
7833 | return 1; | |
7834 | } | |
7835 | ||
954c1994 GS |
7836 | /* |
7837 | =for apidoc sv_isa | |
7838 | ||
7839 | Returns a boolean indicating whether the SV is blessed into the specified | |
7840 | class. This does not check for subtypes; use C<sv_derived_from> to verify | |
7841 | an inheritance relationship. | |
7842 | ||
7843 | =cut | |
7844 | */ | |
7845 | ||
85e6fe83 | 7846 | int |
864dbfa3 | 7847 | Perl_sv_isa(pTHX_ SV *sv, const char *name) |
463ee0b2 | 7848 | { |
68dc0745 | 7849 | if (!sv) |
7850 | return 0; | |
7851 | if (SvGMAGICAL(sv)) | |
7852 | mg_get(sv); | |
ed6116ce | 7853 | if (!SvROK(sv)) |
463ee0b2 | 7854 | return 0; |
ed6116ce LW |
7855 | sv = (SV*)SvRV(sv); |
7856 | if (!SvOBJECT(sv)) | |
463ee0b2 | 7857 | return 0; |
e27ad1f2 AV |
7858 | if (!HvNAME(SvSTASH(sv))) |
7859 | return 0; | |
463ee0b2 LW |
7860 | |
7861 | return strEQ(HvNAME(SvSTASH(sv)), name); | |
7862 | } | |
7863 | ||
954c1994 GS |
7864 | /* |
7865 | =for apidoc newSVrv | |
7866 | ||
7867 | Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then | |
7868 | it will be upgraded to one. If C<classname> is non-null then the new SV will | |
7869 | be blessed in the specified package. The new SV is returned and its | |
7870 | reference count is 1. | |
7871 | ||
7872 | =cut | |
7873 | */ | |
7874 | ||
463ee0b2 | 7875 | SV* |
864dbfa3 | 7876 | Perl_newSVrv(pTHX_ SV *rv, const char *classname) |
463ee0b2 | 7877 | { |
463ee0b2 LW |
7878 | SV *sv; |
7879 | ||
4561caa4 | 7880 | new_SV(sv); |
51cf62d8 | 7881 | |
765f542d | 7882 | SV_CHECK_THINKFIRST_COW_DROP(rv); |
51cf62d8 | 7883 | SvAMAGIC_off(rv); |
51cf62d8 | 7884 | |
0199fce9 JD |
7885 | if (SvTYPE(rv) >= SVt_PVMG) { |
7886 | U32 refcnt = SvREFCNT(rv); | |
7887 | SvREFCNT(rv) = 0; | |
7888 | sv_clear(rv); | |
7889 | SvFLAGS(rv) = 0; | |
7890 | SvREFCNT(rv) = refcnt; | |
7891 | } | |
7892 | ||
51cf62d8 | 7893 | if (SvTYPE(rv) < SVt_RV) |
0199fce9 JD |
7894 | sv_upgrade(rv, SVt_RV); |
7895 | else if (SvTYPE(rv) > SVt_RV) { | |
7896 | (void)SvOOK_off(rv); | |
7897 | if (SvPVX(rv) && SvLEN(rv)) | |
7898 | Safefree(SvPVX(rv)); | |
7899 | SvCUR_set(rv, 0); | |
7900 | SvLEN_set(rv, 0); | |
7901 | } | |
51cf62d8 OT |
7902 | |
7903 | (void)SvOK_off(rv); | |
053fc874 | 7904 | SvRV(rv) = sv; |
ed6116ce | 7905 | SvROK_on(rv); |
463ee0b2 | 7906 | |
a0d0e21e LW |
7907 | if (classname) { |
7908 | HV* stash = gv_stashpv(classname, TRUE); | |
7909 | (void)sv_bless(rv, stash); | |
7910 | } | |
7911 | return sv; | |
7912 | } | |
7913 | ||
954c1994 GS |
7914 | /* |
7915 | =for apidoc sv_setref_pv | |
7916 | ||
7917 | Copies a pointer into a new SV, optionally blessing the SV. The C<rv> | |
7918 | argument will be upgraded to an RV. That RV will be modified to point to | |
7919 | the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed | |
7920 | into the SV. The C<classname> argument indicates the package for the | |
7921 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
7922 | will be returned and will have a reference count of 1. | |
7923 | ||
7924 | Do not use with other Perl types such as HV, AV, SV, CV, because those | |
7925 | objects will become corrupted by the pointer copy process. | |
7926 | ||
7927 | Note that C<sv_setref_pvn> copies the string while this copies the pointer. | |
7928 | ||
7929 | =cut | |
7930 | */ | |
7931 | ||
a0d0e21e | 7932 | SV* |
864dbfa3 | 7933 | Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv) |
a0d0e21e | 7934 | { |
189b2af5 | 7935 | if (!pv) { |
3280af22 | 7936 | sv_setsv(rv, &PL_sv_undef); |
189b2af5 GS |
7937 | SvSETMAGIC(rv); |
7938 | } | |
a0d0e21e | 7939 | else |
56431972 | 7940 | sv_setiv(newSVrv(rv,classname), PTR2IV(pv)); |
a0d0e21e LW |
7941 | return rv; |
7942 | } | |
7943 | ||
954c1994 GS |
7944 | /* |
7945 | =for apidoc sv_setref_iv | |
7946 | ||
7947 | Copies an integer into a new SV, optionally blessing the SV. The C<rv> | |
7948 | argument will be upgraded to an RV. That RV will be modified to point to | |
7949 | the new SV. The C<classname> argument indicates the package for the | |
7950 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
7951 | will be returned and will have a reference count of 1. | |
7952 | ||
7953 | =cut | |
7954 | */ | |
7955 | ||
a0d0e21e | 7956 | SV* |
864dbfa3 | 7957 | Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv) |
a0d0e21e LW |
7958 | { |
7959 | sv_setiv(newSVrv(rv,classname), iv); | |
7960 | return rv; | |
7961 | } | |
7962 | ||
954c1994 | 7963 | /* |
e1c57cef JH |
7964 | =for apidoc sv_setref_uv |
7965 | ||
7966 | Copies an unsigned integer into a new SV, optionally blessing the SV. The C<rv> | |
7967 | argument will be upgraded to an RV. That RV will be modified to point to | |
7968 | the new SV. The C<classname> argument indicates the package for the | |
7969 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
7970 | will be returned and will have a reference count of 1. | |
7971 | ||
7972 | =cut | |
7973 | */ | |
7974 | ||
7975 | SV* | |
7976 | Perl_sv_setref_uv(pTHX_ SV *rv, const char *classname, UV uv) | |
7977 | { | |
7978 | sv_setuv(newSVrv(rv,classname), uv); | |
7979 | return rv; | |
7980 | } | |
7981 | ||
7982 | /* | |
954c1994 GS |
7983 | =for apidoc sv_setref_nv |
7984 | ||
7985 | Copies a double into a new SV, optionally blessing the SV. The C<rv> | |
7986 | argument will be upgraded to an RV. That RV will be modified to point to | |
7987 | the new SV. The C<classname> argument indicates the package for the | |
7988 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
7989 | will be returned and will have a reference count of 1. | |
7990 | ||
7991 | =cut | |
7992 | */ | |
7993 | ||
a0d0e21e | 7994 | SV* |
65202027 | 7995 | Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv) |
a0d0e21e LW |
7996 | { |
7997 | sv_setnv(newSVrv(rv,classname), nv); | |
7998 | return rv; | |
7999 | } | |
463ee0b2 | 8000 | |
954c1994 GS |
8001 | /* |
8002 | =for apidoc sv_setref_pvn | |
8003 | ||
8004 | Copies a string into a new SV, optionally blessing the SV. The length of the | |
8005 | string must be specified with C<n>. The C<rv> argument will be upgraded to | |
8006 | an RV. That RV will be modified to point to the new SV. The C<classname> | |
8007 | argument indicates the package for the blessing. Set C<classname> to | |
8008 | C<Nullch> to avoid the blessing. The new SV will be returned and will have | |
8009 | a reference count of 1. | |
8010 | ||
8011 | Note that C<sv_setref_pv> copies the pointer while this copies the string. | |
8012 | ||
8013 | =cut | |
8014 | */ | |
8015 | ||
a0d0e21e | 8016 | SV* |
864dbfa3 | 8017 | Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n) |
a0d0e21e LW |
8018 | { |
8019 | sv_setpvn(newSVrv(rv,classname), pv, n); | |
463ee0b2 LW |
8020 | return rv; |
8021 | } | |
8022 | ||
954c1994 GS |
8023 | /* |
8024 | =for apidoc sv_bless | |
8025 | ||
8026 | Blesses an SV into a specified package. The SV must be an RV. The package | |
8027 | must be designated by its stash (see C<gv_stashpv()>). The reference count | |
8028 | of the SV is unaffected. | |
8029 | ||
8030 | =cut | |
8031 | */ | |
8032 | ||
a0d0e21e | 8033 | SV* |
864dbfa3 | 8034 | Perl_sv_bless(pTHX_ SV *sv, HV *stash) |
a0d0e21e | 8035 | { |
76e3520e | 8036 | SV *tmpRef; |
a0d0e21e | 8037 | if (!SvROK(sv)) |
cea2e8a9 | 8038 | Perl_croak(aTHX_ "Can't bless non-reference value"); |
76e3520e GS |
8039 | tmpRef = SvRV(sv); |
8040 | if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) { | |
8041 | if (SvREADONLY(tmpRef)) | |
cea2e8a9 | 8042 | Perl_croak(aTHX_ PL_no_modify); |
76e3520e GS |
8043 | if (SvOBJECT(tmpRef)) { |
8044 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 8045 | --PL_sv_objcount; |
76e3520e | 8046 | SvREFCNT_dec(SvSTASH(tmpRef)); |
2e3febc6 | 8047 | } |
a0d0e21e | 8048 | } |
76e3520e GS |
8049 | SvOBJECT_on(tmpRef); |
8050 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 8051 | ++PL_sv_objcount; |
76e3520e GS |
8052 | (void)SvUPGRADE(tmpRef, SVt_PVMG); |
8053 | SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash); | |
a0d0e21e | 8054 | |
2e3febc6 CS |
8055 | if (Gv_AMG(stash)) |
8056 | SvAMAGIC_on(sv); | |
8057 | else | |
8058 | SvAMAGIC_off(sv); | |
a0d0e21e | 8059 | |
1edbfb88 AB |
8060 | if(SvSMAGICAL(tmpRef)) |
8061 | if(mg_find(tmpRef, PERL_MAGIC_ext) || mg_find(tmpRef, PERL_MAGIC_uvar)) | |
8062 | mg_set(tmpRef); | |
8063 | ||
8064 | ||
ecdeb87c | 8065 | |
a0d0e21e LW |
8066 | return sv; |
8067 | } | |
8068 | ||
645c22ef | 8069 | /* Downgrades a PVGV to a PVMG. |
645c22ef DM |
8070 | */ |
8071 | ||
76e3520e | 8072 | STATIC void |
cea2e8a9 | 8073 | S_sv_unglob(pTHX_ SV *sv) |
a0d0e21e | 8074 | { |
850fabdf GS |
8075 | void *xpvmg; |
8076 | ||
a0d0e21e LW |
8077 | assert(SvTYPE(sv) == SVt_PVGV); |
8078 | SvFAKE_off(sv); | |
8079 | if (GvGP(sv)) | |
1edc1566 | 8080 | gp_free((GV*)sv); |
e826b3c7 GS |
8081 | if (GvSTASH(sv)) { |
8082 | SvREFCNT_dec(GvSTASH(sv)); | |
8083 | GvSTASH(sv) = Nullhv; | |
8084 | } | |
14befaf4 | 8085 | sv_unmagic(sv, PERL_MAGIC_glob); |
a0d0e21e | 8086 | Safefree(GvNAME(sv)); |
a5f75d66 | 8087 | GvMULTI_off(sv); |
850fabdf GS |
8088 | |
8089 | /* need to keep SvANY(sv) in the right arena */ | |
8090 | xpvmg = new_XPVMG(); | |
8091 | StructCopy(SvANY(sv), xpvmg, XPVMG); | |
8092 | del_XPVGV(SvANY(sv)); | |
8093 | SvANY(sv) = xpvmg; | |
8094 | ||
a0d0e21e LW |
8095 | SvFLAGS(sv) &= ~SVTYPEMASK; |
8096 | SvFLAGS(sv) |= SVt_PVMG; | |
8097 | } | |
8098 | ||
954c1994 | 8099 | /* |
840a7b70 | 8100 | =for apidoc sv_unref_flags |
954c1994 GS |
8101 | |
8102 | Unsets the RV status of the SV, and decrements the reference count of | |
8103 | whatever was being referenced by the RV. This can almost be thought of | |
840a7b70 IZ |
8104 | as a reversal of C<newSVrv>. The C<cflags> argument can contain |
8105 | C<SV_IMMEDIATE_UNREF> to force the reference count to be decremented | |
8106 | (otherwise the decrementing is conditional on the reference count being | |
8107 | different from one or the reference being a readonly SV). | |
7889fe52 | 8108 | See C<SvROK_off>. |
954c1994 GS |
8109 | |
8110 | =cut | |
8111 | */ | |
8112 | ||
ed6116ce | 8113 | void |
840a7b70 | 8114 | Perl_sv_unref_flags(pTHX_ SV *sv, U32 flags) |
ed6116ce | 8115 | { |
a0d0e21e | 8116 | SV* rv = SvRV(sv); |
810b8aa5 GS |
8117 | |
8118 | if (SvWEAKREF(sv)) { | |
8119 | sv_del_backref(sv); | |
8120 | SvWEAKREF_off(sv); | |
8121 | SvRV(sv) = 0; | |
8122 | return; | |
8123 | } | |
ed6116ce LW |
8124 | SvRV(sv) = 0; |
8125 | SvROK_off(sv); | |
04ca4930 NC |
8126 | /* You can't have a || SvREADONLY(rv) here, as $a = $$a, where $a was |
8127 | assigned to as BEGIN {$a = \"Foo"} will fail. */ | |
8128 | if (SvREFCNT(rv) != 1 || (flags & SV_IMMEDIATE_UNREF)) | |
4633a7c4 | 8129 | SvREFCNT_dec(rv); |
840a7b70 | 8130 | else /* XXX Hack, but hard to make $a=$a->[1] work otherwise */ |
4633a7c4 | 8131 | sv_2mortal(rv); /* Schedule for freeing later */ |
ed6116ce | 8132 | } |
8990e307 | 8133 | |
840a7b70 IZ |
8134 | /* |
8135 | =for apidoc sv_unref | |
8136 | ||
8137 | Unsets the RV status of the SV, and decrements the reference count of | |
8138 | whatever was being referenced by the RV. This can almost be thought of | |
8139 | as a reversal of C<newSVrv>. This is C<sv_unref_flags> with the C<flag> | |
7889fe52 | 8140 | being zero. See C<SvROK_off>. |
840a7b70 IZ |
8141 | |
8142 | =cut | |
8143 | */ | |
8144 | ||
8145 | void | |
8146 | Perl_sv_unref(pTHX_ SV *sv) | |
8147 | { | |
8148 | sv_unref_flags(sv, 0); | |
8149 | } | |
8150 | ||
645c22ef DM |
8151 | /* |
8152 | =for apidoc sv_taint | |
8153 | ||
8154 | Taint an SV. Use C<SvTAINTED_on> instead. | |
8155 | =cut | |
8156 | */ | |
8157 | ||
bbce6d69 | 8158 | void |
864dbfa3 | 8159 | Perl_sv_taint(pTHX_ SV *sv) |
bbce6d69 | 8160 | { |
14befaf4 | 8161 | sv_magic((sv), Nullsv, PERL_MAGIC_taint, Nullch, 0); |
bbce6d69 | 8162 | } |
8163 | ||
645c22ef DM |
8164 | /* |
8165 | =for apidoc sv_untaint | |
8166 | ||
8167 | Untaint an SV. Use C<SvTAINTED_off> instead. | |
8168 | =cut | |
8169 | */ | |
8170 | ||
bbce6d69 | 8171 | void |
864dbfa3 | 8172 | Perl_sv_untaint(pTHX_ SV *sv) |
bbce6d69 | 8173 | { |
13f57bf8 | 8174 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
14befaf4 | 8175 | MAGIC *mg = mg_find(sv, PERL_MAGIC_taint); |
36477c24 | 8176 | if (mg) |
565764a8 | 8177 | mg->mg_len &= ~1; |
36477c24 | 8178 | } |
bbce6d69 | 8179 | } |
8180 | ||
645c22ef DM |
8181 | /* |
8182 | =for apidoc sv_tainted | |
8183 | ||
8184 | Test an SV for taintedness. Use C<SvTAINTED> instead. | |
8185 | =cut | |
8186 | */ | |
8187 | ||
bbce6d69 | 8188 | bool |
864dbfa3 | 8189 | Perl_sv_tainted(pTHX_ SV *sv) |
bbce6d69 | 8190 | { |
13f57bf8 | 8191 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
14befaf4 | 8192 | MAGIC *mg = mg_find(sv, PERL_MAGIC_taint); |
155aba94 | 8193 | if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv))) |
36477c24 | 8194 | return TRUE; |
8195 | } | |
8196 | return FALSE; | |
bbce6d69 | 8197 | } |
8198 | ||
09540bc3 JH |
8199 | /* |
8200 | =for apidoc sv_setpviv | |
8201 | ||
8202 | Copies an integer into the given SV, also updating its string value. | |
8203 | Does not handle 'set' magic. See C<sv_setpviv_mg>. | |
8204 | ||
8205 | =cut | |
8206 | */ | |
8207 | ||
8208 | void | |
8209 | Perl_sv_setpviv(pTHX_ SV *sv, IV iv) | |
8210 | { | |
8211 | char buf[TYPE_CHARS(UV)]; | |
8212 | char *ebuf; | |
8213 | char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf); | |
8214 | ||
8215 | sv_setpvn(sv, ptr, ebuf - ptr); | |
8216 | } | |
8217 | ||
8218 | /* | |
8219 | =for apidoc sv_setpviv_mg | |
8220 | ||
8221 | Like C<sv_setpviv>, but also handles 'set' magic. | |
8222 | ||
8223 | =cut | |
8224 | */ | |
8225 | ||
8226 | void | |
8227 | Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv) | |
8228 | { | |
8229 | char buf[TYPE_CHARS(UV)]; | |
8230 | char *ebuf; | |
8231 | char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf); | |
8232 | ||
8233 | sv_setpvn(sv, ptr, ebuf - ptr); | |
8234 | SvSETMAGIC(sv); | |
8235 | } | |
8236 | ||
cea2e8a9 | 8237 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
8238 | |
8239 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
8240 | * version of the main function, (which may itself be aliased to us). | |
8241 | * Don't access this version directly. | |
8242 | */ | |
8243 | ||
cea2e8a9 GS |
8244 | void |
8245 | Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...) | |
8246 | { | |
8247 | dTHX; | |
8248 | va_list args; | |
8249 | va_start(args, pat); | |
c5be433b | 8250 | sv_vsetpvf(sv, pat, &args); |
cea2e8a9 GS |
8251 | va_end(args); |
8252 | } | |
8253 | ||
645c22ef DM |
8254 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
8255 | * version of the main function, (which may itself be aliased to us). | |
8256 | * Don't access this version directly. | |
8257 | */ | |
cea2e8a9 GS |
8258 | |
8259 | void | |
8260 | Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
8261 | { | |
8262 | dTHX; | |
8263 | va_list args; | |
8264 | va_start(args, pat); | |
c5be433b | 8265 | sv_vsetpvf_mg(sv, pat, &args); |
cea2e8a9 | 8266 | va_end(args); |
cea2e8a9 GS |
8267 | } |
8268 | #endif | |
8269 | ||
954c1994 GS |
8270 | /* |
8271 | =for apidoc sv_setpvf | |
8272 | ||
8273 | Processes its arguments like C<sprintf> and sets an SV to the formatted | |
8274 | output. Does not handle 'set' magic. See C<sv_setpvf_mg>. | |
8275 | ||
8276 | =cut | |
8277 | */ | |
8278 | ||
46fc3d4c | 8279 | void |
864dbfa3 | 8280 | Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 8281 | { |
8282 | va_list args; | |
46fc3d4c | 8283 | va_start(args, pat); |
c5be433b | 8284 | sv_vsetpvf(sv, pat, &args); |
46fc3d4c | 8285 | va_end(args); |
8286 | } | |
8287 | ||
645c22ef DM |
8288 | /* backend for C<sv_setpvf> and C<sv_setpvf_nocontext> */ |
8289 | ||
c5be433b GS |
8290 | void |
8291 | Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args) | |
8292 | { | |
8293 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
8294 | } | |
ef50df4b | 8295 | |
954c1994 GS |
8296 | /* |
8297 | =for apidoc sv_setpvf_mg | |
8298 | ||
8299 | Like C<sv_setpvf>, but also handles 'set' magic. | |
8300 | ||
8301 | =cut | |
8302 | */ | |
8303 | ||
ef50df4b | 8304 | void |
864dbfa3 | 8305 | Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
8306 | { |
8307 | va_list args; | |
ef50df4b | 8308 | va_start(args, pat); |
c5be433b | 8309 | sv_vsetpvf_mg(sv, pat, &args); |
ef50df4b | 8310 | va_end(args); |
c5be433b GS |
8311 | } |
8312 | ||
645c22ef DM |
8313 | /* backend for C<sv_setpvf_mg> C<setpvf_mg_nocontext> */ |
8314 | ||
c5be433b GS |
8315 | void |
8316 | Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
8317 | { | |
8318 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
ef50df4b GS |
8319 | SvSETMAGIC(sv); |
8320 | } | |
8321 | ||
cea2e8a9 | 8322 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
8323 | |
8324 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
8325 | * version of the main function, (which may itself be aliased to us). | |
8326 | * Don't access this version directly. | |
8327 | */ | |
8328 | ||
cea2e8a9 GS |
8329 | void |
8330 | Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...) | |
8331 | { | |
8332 | dTHX; | |
8333 | va_list args; | |
8334 | va_start(args, pat); | |
c5be433b | 8335 | sv_vcatpvf(sv, pat, &args); |
cea2e8a9 GS |
8336 | va_end(args); |
8337 | } | |
8338 | ||
645c22ef DM |
8339 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
8340 | * version of the main function, (which may itself be aliased to us). | |
8341 | * Don't access this version directly. | |
8342 | */ | |
8343 | ||
cea2e8a9 GS |
8344 | void |
8345 | Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
8346 | { | |
8347 | dTHX; | |
8348 | va_list args; | |
8349 | va_start(args, pat); | |
c5be433b | 8350 | sv_vcatpvf_mg(sv, pat, &args); |
cea2e8a9 | 8351 | va_end(args); |
cea2e8a9 GS |
8352 | } |
8353 | #endif | |
8354 | ||
954c1994 GS |
8355 | /* |
8356 | =for apidoc sv_catpvf | |
8357 | ||
d5ce4a7c GA |
8358 | Processes its arguments like C<sprintf> and appends the formatted |
8359 | output to an SV. If the appended data contains "wide" characters | |
8360 | (including, but not limited to, SVs with a UTF-8 PV formatted with %s, | |
8361 | and characters >255 formatted with %c), the original SV might get | |
8362 | upgraded to UTF-8. Handles 'get' magic, but not 'set' magic. | |
8363 | C<SvSETMAGIC()> must typically be called after calling this function | |
8364 | to handle 'set' magic. | |
954c1994 | 8365 | |
d5ce4a7c | 8366 | =cut */ |
954c1994 | 8367 | |
46fc3d4c | 8368 | void |
864dbfa3 | 8369 | Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 8370 | { |
8371 | va_list args; | |
46fc3d4c | 8372 | va_start(args, pat); |
c5be433b | 8373 | sv_vcatpvf(sv, pat, &args); |
46fc3d4c | 8374 | va_end(args); |
8375 | } | |
8376 | ||
645c22ef DM |
8377 | /* backend for C<sv_catpvf> and C<catpvf_mg_nocontext> */ |
8378 | ||
ef50df4b | 8379 | void |
c5be433b GS |
8380 | Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args) |
8381 | { | |
8382 | sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
8383 | } | |
8384 | ||
954c1994 GS |
8385 | /* |
8386 | =for apidoc sv_catpvf_mg | |
8387 | ||
8388 | Like C<sv_catpvf>, but also handles 'set' magic. | |
8389 | ||
8390 | =cut | |
8391 | */ | |
8392 | ||
c5be433b | 8393 | void |
864dbfa3 | 8394 | Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
8395 | { |
8396 | va_list args; | |
ef50df4b | 8397 | va_start(args, pat); |
c5be433b | 8398 | sv_vcatpvf_mg(sv, pat, &args); |
ef50df4b | 8399 | va_end(args); |
c5be433b GS |
8400 | } |
8401 | ||
645c22ef DM |
8402 | /* backend for C<catpvf_mg> and C<catpvf_mg_nocontext> */ |
8403 | ||
c5be433b GS |
8404 | void |
8405 | Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
8406 | { | |
8407 | sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
ef50df4b GS |
8408 | SvSETMAGIC(sv); |
8409 | } | |
8410 | ||
954c1994 GS |
8411 | /* |
8412 | =for apidoc sv_vsetpvfn | |
8413 | ||
8414 | Works like C<vcatpvfn> but copies the text into the SV instead of | |
8415 | appending it. | |
8416 | ||
645c22ef DM |
8417 | Usually used via one of its frontends C<sv_setpvf> and C<sv_setpvf_mg>. |
8418 | ||
954c1994 GS |
8419 | =cut |
8420 | */ | |
8421 | ||
46fc3d4c | 8422 | void |
7d5ea4e7 | 8423 | Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 8424 | { |
8425 | sv_setpvn(sv, "", 0); | |
7d5ea4e7 | 8426 | sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted); |
46fc3d4c | 8427 | } |
8428 | ||
645c22ef DM |
8429 | /* private function for use in sv_vcatpvfn via the EXPECT_NUMBER macro */ |
8430 | ||
2d00ba3b | 8431 | STATIC I32 |
9dd79c3f | 8432 | S_expect_number(pTHX_ char** pattern) |
211dfcf1 HS |
8433 | { |
8434 | I32 var = 0; | |
8435 | switch (**pattern) { | |
8436 | case '1': case '2': case '3': | |
8437 | case '4': case '5': case '6': | |
8438 | case '7': case '8': case '9': | |
8439 | while (isDIGIT(**pattern)) | |
8440 | var = var * 10 + (*(*pattern)++ - '0'); | |
8441 | } | |
8442 | return var; | |
8443 | } | |
9dd79c3f | 8444 | #define EXPECT_NUMBER(pattern, var) (var = S_expect_number(aTHX_ &pattern)) |
211dfcf1 | 8445 | |
954c1994 GS |
8446 | /* |
8447 | =for apidoc sv_vcatpvfn | |
8448 | ||
8449 | Processes its arguments like C<vsprintf> and appends the formatted output | |
8450 | to an SV. Uses an array of SVs if the C style variable argument list is | |
8451 | missing (NULL). When running with taint checks enabled, indicates via | |
8452 | C<maybe_tainted> if results are untrustworthy (often due to the use of | |
8453 | locales). | |
8454 | ||
645c22ef DM |
8455 | Usually used via one of its frontends C<sv_catpvf> and C<sv_catpvf_mg>. |
8456 | ||
954c1994 GS |
8457 | =cut |
8458 | */ | |
8459 | ||
46fc3d4c | 8460 | void |
7d5ea4e7 | 8461 | Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 8462 | { |
8463 | char *p; | |
8464 | char *q; | |
8465 | char *patend; | |
fc36a67e | 8466 | STRLEN origlen; |
46fc3d4c | 8467 | I32 svix = 0; |
c635e13b | 8468 | static char nullstr[] = "(null)"; |
9c5ffd7c | 8469 | SV *argsv = Nullsv; |
db79b45b JH |
8470 | bool has_utf8; /* has the result utf8? */ |
8471 | bool pat_utf8; /* the pattern is in utf8? */ | |
8472 | SV *nsv = Nullsv; | |
8473 | ||
8474 | has_utf8 = pat_utf8 = DO_UTF8(sv); | |
46fc3d4c | 8475 | |
8476 | /* no matter what, this is a string now */ | |
fc36a67e | 8477 | (void)SvPV_force(sv, origlen); |
46fc3d4c | 8478 | |
fc36a67e | 8479 | /* special-case "", "%s", and "%_" */ |
46fc3d4c | 8480 | if (patlen == 0) |
8481 | return; | |
fc36a67e | 8482 | if (patlen == 2 && pat[0] == '%') { |
8483 | switch (pat[1]) { | |
8484 | case 's': | |
c635e13b | 8485 | if (args) { |
8486 | char *s = va_arg(*args, char*); | |
8487 | sv_catpv(sv, s ? s : nullstr); | |
8488 | } | |
7e2040f0 | 8489 | else if (svix < svmax) { |
fc36a67e | 8490 | sv_catsv(sv, *svargs); |
7e2040f0 GS |
8491 | if (DO_UTF8(*svargs)) |
8492 | SvUTF8_on(sv); | |
8493 | } | |
fc36a67e | 8494 | return; |
8495 | case '_': | |
8496 | if (args) { | |
7e2040f0 GS |
8497 | argsv = va_arg(*args, SV*); |
8498 | sv_catsv(sv, argsv); | |
8499 | if (DO_UTF8(argsv)) | |
8500 | SvUTF8_on(sv); | |
fc36a67e | 8501 | return; |
8502 | } | |
8503 | /* See comment on '_' below */ | |
8504 | break; | |
8505 | } | |
46fc3d4c | 8506 | } |
8507 | ||
2cf2cfc6 | 8508 | if (!args && svix < svmax && DO_UTF8(*svargs)) |
205f51d8 | 8509 | has_utf8 = TRUE; |
2cf2cfc6 | 8510 | |
46fc3d4c | 8511 | patend = (char*)pat + patlen; |
8512 | for (p = (char*)pat; p < patend; p = q) { | |
8513 | bool alt = FALSE; | |
8514 | bool left = FALSE; | |
b22c7a20 | 8515 | bool vectorize = FALSE; |
211dfcf1 | 8516 | bool vectorarg = FALSE; |
2cf2cfc6 | 8517 | bool vec_utf8 = FALSE; |
46fc3d4c | 8518 | char fill = ' '; |
8519 | char plus = 0; | |
8520 | char intsize = 0; | |
8521 | STRLEN width = 0; | |
fc36a67e | 8522 | STRLEN zeros = 0; |
46fc3d4c | 8523 | bool has_precis = FALSE; |
8524 | STRLEN precis = 0; | |
58e33a90 | 8525 | I32 osvix = svix; |
2cf2cfc6 | 8526 | bool is_utf8 = FALSE; /* is this item utf8? */ |
20f6aaab AS |
8527 | #ifdef HAS_LDBL_SPRINTF_BUG |
8528 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 | 8529 | with sfio - Allen <allens@cpan.org> */ |
20f6aaab AS |
8530 | bool fix_ldbl_sprintf_bug = FALSE; |
8531 | #endif | |
205f51d8 | 8532 | |
46fc3d4c | 8533 | char esignbuf[4]; |
ad391ad9 | 8534 | U8 utf8buf[UTF8_MAXLEN+1]; |
46fc3d4c | 8535 | STRLEN esignlen = 0; |
8536 | ||
8537 | char *eptr = Nullch; | |
fc36a67e | 8538 | STRLEN elen = 0; |
089c015b JH |
8539 | /* Times 4: a decimal digit takes more than 3 binary digits. |
8540 | * NV_DIG: mantissa takes than many decimal digits. | |
8541 | * Plus 32: Playing safe. */ | |
8542 | char ebuf[IV_DIG * 4 + NV_DIG + 32]; | |
205f51d8 | 8543 | /* large enough for "%#.#f" --chip */ |
2d4389e4 | 8544 | /* what about long double NVs? --jhi */ |
b22c7a20 | 8545 | |
81f715da | 8546 | SV *vecsv = Nullsv; |
a05b299f | 8547 | U8 *vecstr = Null(U8*); |
b22c7a20 | 8548 | STRLEN veclen = 0; |
934abaf1 | 8549 | char c = 0; |
46fc3d4c | 8550 | int i; |
9c5ffd7c | 8551 | unsigned base = 0; |
8c8eb53c RB |
8552 | IV iv = 0; |
8553 | UV uv = 0; | |
9e5b023a JH |
8554 | /* we need a long double target in case HAS_LONG_DOUBLE but |
8555 | not USE_LONG_DOUBLE | |
8556 | */ | |
35fff930 | 8557 | #if defined(HAS_LONG_DOUBLE) && LONG_DOUBLESIZE > DOUBLESIZE |
9e5b023a JH |
8558 | long double nv; |
8559 | #else | |
65202027 | 8560 | NV nv; |
9e5b023a | 8561 | #endif |
46fc3d4c | 8562 | STRLEN have; |
8563 | STRLEN need; | |
8564 | STRLEN gap; | |
b22c7a20 GS |
8565 | char *dotstr = "."; |
8566 | STRLEN dotstrlen = 1; | |
211dfcf1 | 8567 | I32 efix = 0; /* explicit format parameter index */ |
eb3fce90 | 8568 | I32 ewix = 0; /* explicit width index */ |
211dfcf1 HS |
8569 | I32 epix = 0; /* explicit precision index */ |
8570 | I32 evix = 0; /* explicit vector index */ | |
eb3fce90 | 8571 | bool asterisk = FALSE; |
46fc3d4c | 8572 | |
211dfcf1 | 8573 | /* echo everything up to the next format specification */ |
46fc3d4c | 8574 | for (q = p; q < patend && *q != '%'; ++q) ; |
8575 | if (q > p) { | |
db79b45b JH |
8576 | if (has_utf8 && !pat_utf8) |
8577 | sv_catpvn_utf8_upgrade(sv, p, q - p, nsv); | |
8578 | else | |
8579 | sv_catpvn(sv, p, q - p); | |
46fc3d4c | 8580 | p = q; |
8581 | } | |
8582 | if (q++ >= patend) | |
8583 | break; | |
8584 | ||
211dfcf1 HS |
8585 | /* |
8586 | We allow format specification elements in this order: | |
8587 | \d+\$ explicit format parameter index | |
8588 | [-+ 0#]+ flags | |
a472f209 | 8589 | v|\*(\d+\$)?v vector with optional (optionally specified) arg |
f3583277 | 8590 | 0 flag (as above): repeated to allow "v02" |
211dfcf1 HS |
8591 | \d+|\*(\d+\$)? width using optional (optionally specified) arg |
8592 | \.(\d*|\*(\d+\$)?) precision using optional (optionally specified) arg | |
8593 | [hlqLV] size | |
8594 | [%bcdefginopsux_DFOUX] format (mandatory) | |
8595 | */ | |
8596 | if (EXPECT_NUMBER(q, width)) { | |
8597 | if (*q == '$') { | |
8598 | ++q; | |
8599 | efix = width; | |
8600 | } else { | |
8601 | goto gotwidth; | |
8602 | } | |
8603 | } | |
8604 | ||
fc36a67e | 8605 | /* FLAGS */ |
8606 | ||
46fc3d4c | 8607 | while (*q) { |
8608 | switch (*q) { | |
8609 | case ' ': | |
8610 | case '+': | |
8611 | plus = *q++; | |
8612 | continue; | |
8613 | ||
8614 | case '-': | |
8615 | left = TRUE; | |
8616 | q++; | |
8617 | continue; | |
8618 | ||
8619 | case '0': | |
8620 | fill = *q++; | |
8621 | continue; | |
8622 | ||
8623 | case '#': | |
8624 | alt = TRUE; | |
8625 | q++; | |
8626 | continue; | |
8627 | ||
fc36a67e | 8628 | default: |
8629 | break; | |
8630 | } | |
8631 | break; | |
8632 | } | |
46fc3d4c | 8633 | |
211dfcf1 | 8634 | tryasterisk: |
eb3fce90 | 8635 | if (*q == '*') { |
211dfcf1 HS |
8636 | q++; |
8637 | if (EXPECT_NUMBER(q, ewix)) | |
8638 | if (*q++ != '$') | |
8639 | goto unknown; | |
eb3fce90 | 8640 | asterisk = TRUE; |
211dfcf1 HS |
8641 | } |
8642 | if (*q == 'v') { | |
eb3fce90 | 8643 | q++; |
211dfcf1 HS |
8644 | if (vectorize) |
8645 | goto unknown; | |
9cbac4c7 | 8646 | if ((vectorarg = asterisk)) { |
211dfcf1 HS |
8647 | evix = ewix; |
8648 | ewix = 0; | |
8649 | asterisk = FALSE; | |
8650 | } | |
8651 | vectorize = TRUE; | |
8652 | goto tryasterisk; | |
eb3fce90 JH |
8653 | } |
8654 | ||
211dfcf1 | 8655 | if (!asterisk) |
f3583277 RB |
8656 | if( *q == '0' ) |
8657 | fill = *q++; | |
211dfcf1 HS |
8658 | EXPECT_NUMBER(q, width); |
8659 | ||
8660 | if (vectorize) { | |
8661 | if (vectorarg) { | |
8662 | if (args) | |
8663 | vecsv = va_arg(*args, SV*); | |
8664 | else | |
8665 | vecsv = (evix ? evix <= svmax : svix < svmax) ? | |
8666 | svargs[ewix ? ewix-1 : svix++] : &PL_sv_undef; | |
4459522c | 8667 | dotstr = SvPVx(vecsv, dotstrlen); |
211dfcf1 | 8668 | if (DO_UTF8(vecsv)) |
2cf2cfc6 | 8669 | is_utf8 = TRUE; |
211dfcf1 HS |
8670 | } |
8671 | if (args) { | |
8672 | vecsv = va_arg(*args, SV*); | |
8673 | vecstr = (U8*)SvPVx(vecsv,veclen); | |
2cf2cfc6 | 8674 | vec_utf8 = DO_UTF8(vecsv); |
eb3fce90 | 8675 | } |
211dfcf1 HS |
8676 | else if (efix ? efix <= svmax : svix < svmax) { |
8677 | vecsv = svargs[efix ? efix-1 : svix++]; | |
8678 | vecstr = (U8*)SvPVx(vecsv,veclen); | |
2cf2cfc6 | 8679 | vec_utf8 = DO_UTF8(vecsv); |
211dfcf1 HS |
8680 | } |
8681 | else { | |
8682 | vecstr = (U8*)""; | |
8683 | veclen = 0; | |
8684 | } | |
eb3fce90 | 8685 | } |
fc36a67e | 8686 | |
eb3fce90 | 8687 | if (asterisk) { |
fc36a67e | 8688 | if (args) |
8689 | i = va_arg(*args, int); | |
8690 | else | |
eb3fce90 JH |
8691 | i = (ewix ? ewix <= svmax : svix < svmax) ? |
8692 | SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 8693 | left |= (i < 0); |
8694 | width = (i < 0) ? -i : i; | |
fc36a67e | 8695 | } |
211dfcf1 | 8696 | gotwidth: |
fc36a67e | 8697 | |
8698 | /* PRECISION */ | |
46fc3d4c | 8699 | |
fc36a67e | 8700 | if (*q == '.') { |
8701 | q++; | |
8702 | if (*q == '*') { | |
211dfcf1 | 8703 | q++; |
7b8dd722 HS |
8704 | if (EXPECT_NUMBER(q, epix) && *q++ != '$') |
8705 | goto unknown; | |
8706 | /* XXX: todo, support specified precision parameter */ | |
8707 | if (epix) | |
211dfcf1 | 8708 | goto unknown; |
46fc3d4c | 8709 | if (args) |
8710 | i = va_arg(*args, int); | |
8711 | else | |
eb3fce90 JH |
8712 | i = (ewix ? ewix <= svmax : svix < svmax) |
8713 | ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 8714 | precis = (i < 0) ? 0 : i; |
fc36a67e | 8715 | } |
8716 | else { | |
8717 | precis = 0; | |
8718 | while (isDIGIT(*q)) | |
8719 | precis = precis * 10 + (*q++ - '0'); | |
8720 | } | |
8721 | has_precis = TRUE; | |
8722 | } | |
46fc3d4c | 8723 | |
fc36a67e | 8724 | /* SIZE */ |
46fc3d4c | 8725 | |
fc36a67e | 8726 | switch (*q) { |
c623ac67 GS |
8727 | #ifdef WIN32 |
8728 | case 'I': /* Ix, I32x, and I64x */ | |
8729 | # ifdef WIN64 | |
8730 | if (q[1] == '6' && q[2] == '4') { | |
8731 | q += 3; | |
8732 | intsize = 'q'; | |
8733 | break; | |
8734 | } | |
8735 | # endif | |
8736 | if (q[1] == '3' && q[2] == '2') { | |
8737 | q += 3; | |
8738 | break; | |
8739 | } | |
8740 | # ifdef WIN64 | |
8741 | intsize = 'q'; | |
8742 | # endif | |
8743 | q++; | |
8744 | break; | |
8745 | #endif | |
9e5b023a | 8746 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
6f9bb7fd | 8747 | case 'L': /* Ld */ |
e5c81feb | 8748 | /* FALL THROUGH */ |
e5c81feb | 8749 | #ifdef HAS_QUAD |
6f9bb7fd | 8750 | case 'q': /* qd */ |
9e5b023a | 8751 | #endif |
6f9bb7fd GS |
8752 | intsize = 'q'; |
8753 | q++; | |
8754 | break; | |
8755 | #endif | |
fc36a67e | 8756 | case 'l': |
9e5b023a | 8757 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
205f51d8 | 8758 | if (*(q + 1) == 'l') { /* lld, llf */ |
fc36a67e | 8759 | intsize = 'q'; |
8760 | q += 2; | |
46fc3d4c | 8761 | break; |
cf2093f6 | 8762 | } |
fc36a67e | 8763 | #endif |
6f9bb7fd | 8764 | /* FALL THROUGH */ |
fc36a67e | 8765 | case 'h': |
cf2093f6 | 8766 | /* FALL THROUGH */ |
fc36a67e | 8767 | case 'V': |
8768 | intsize = *q++; | |
46fc3d4c | 8769 | break; |
8770 | } | |
8771 | ||
fc36a67e | 8772 | /* CONVERSION */ |
8773 | ||
211dfcf1 HS |
8774 | if (*q == '%') { |
8775 | eptr = q++; | |
8776 | elen = 1; | |
8777 | goto string; | |
8778 | } | |
8779 | ||
be75b157 HS |
8780 | if (vectorize) |
8781 | argsv = vecsv; | |
8782 | else if (!args) | |
211dfcf1 HS |
8783 | argsv = (efix ? efix <= svmax : svix < svmax) ? |
8784 | svargs[efix ? efix-1 : svix++] : &PL_sv_undef; | |
8785 | ||
46fc3d4c | 8786 | switch (c = *q++) { |
8787 | ||
8788 | /* STRINGS */ | |
8789 | ||
46fc3d4c | 8790 | case 'c': |
be75b157 | 8791 | uv = (args && !vectorize) ? va_arg(*args, int) : SvIVx(argsv); |
1bd104fb JH |
8792 | if ((uv > 255 || |
8793 | (!UNI_IS_INVARIANT(uv) && SvUTF8(sv))) | |
0064a8a9 | 8794 | && !IN_BYTES) { |
dfe13c55 | 8795 | eptr = (char*)utf8buf; |
9041c2e3 | 8796 | elen = uvchr_to_utf8((U8*)eptr, uv) - utf8buf; |
2cf2cfc6 | 8797 | is_utf8 = TRUE; |
7e2040f0 GS |
8798 | } |
8799 | else { | |
8800 | c = (char)uv; | |
8801 | eptr = &c; | |
8802 | elen = 1; | |
a0ed51b3 | 8803 | } |
46fc3d4c | 8804 | goto string; |
8805 | ||
46fc3d4c | 8806 | case 's': |
be75b157 | 8807 | if (args && !vectorize) { |
fc36a67e | 8808 | eptr = va_arg(*args, char*); |
c635e13b | 8809 | if (eptr) |
1d7c1841 GS |
8810 | #ifdef MACOS_TRADITIONAL |
8811 | /* On MacOS, %#s format is used for Pascal strings */ | |
8812 | if (alt) | |
8813 | elen = *eptr++; | |
8814 | else | |
8815 | #endif | |
c635e13b | 8816 | elen = strlen(eptr); |
8817 | else { | |
8818 | eptr = nullstr; | |
8819 | elen = sizeof nullstr - 1; | |
8820 | } | |
46fc3d4c | 8821 | } |
211dfcf1 | 8822 | else { |
7e2040f0 GS |
8823 | eptr = SvPVx(argsv, elen); |
8824 | if (DO_UTF8(argsv)) { | |
a0ed51b3 LW |
8825 | if (has_precis && precis < elen) { |
8826 | I32 p = precis; | |
7e2040f0 | 8827 | sv_pos_u2b(argsv, &p, 0); /* sticks at end */ |
a0ed51b3 LW |
8828 | precis = p; |
8829 | } | |
8830 | if (width) { /* fudge width (can't fudge elen) */ | |
7e2040f0 | 8831 | width += elen - sv_len_utf8(argsv); |
a0ed51b3 | 8832 | } |
2cf2cfc6 | 8833 | is_utf8 = TRUE; |
a0ed51b3 LW |
8834 | } |
8835 | } | |
46fc3d4c | 8836 | goto string; |
8837 | ||
fc36a67e | 8838 | case '_': |
8839 | /* | |
8840 | * The "%_" hack might have to be changed someday, | |
8841 | * if ISO or ANSI decide to use '_' for something. | |
8842 | * So we keep it hidden from users' code. | |
8843 | */ | |
be75b157 | 8844 | if (!args || vectorize) |
fc36a67e | 8845 | goto unknown; |
211dfcf1 | 8846 | argsv = va_arg(*args, SV*); |
7e2040f0 GS |
8847 | eptr = SvPVx(argsv, elen); |
8848 | if (DO_UTF8(argsv)) | |
2cf2cfc6 | 8849 | is_utf8 = TRUE; |
fc36a67e | 8850 | |
46fc3d4c | 8851 | string: |
b22c7a20 | 8852 | vectorize = FALSE; |
46fc3d4c | 8853 | if (has_precis && elen > precis) |
8854 | elen = precis; | |
8855 | break; | |
8856 | ||
8857 | /* INTEGERS */ | |
8858 | ||
fc36a67e | 8859 | case 'p': |
be75b157 | 8860 | if (alt || vectorize) |
c2e66d9e | 8861 | goto unknown; |
211dfcf1 | 8862 | uv = PTR2UV(args ? va_arg(*args, void*) : argsv); |
fc36a67e | 8863 | base = 16; |
8864 | goto integer; | |
8865 | ||
46fc3d4c | 8866 | case 'D': |
29fe7a80 | 8867 | #ifdef IV_IS_QUAD |
22f3ae8c | 8868 | intsize = 'q'; |
29fe7a80 | 8869 | #else |
46fc3d4c | 8870 | intsize = 'l'; |
29fe7a80 | 8871 | #endif |
46fc3d4c | 8872 | /* FALL THROUGH */ |
8873 | case 'd': | |
8874 | case 'i': | |
b22c7a20 | 8875 | if (vectorize) { |
ba210ebe | 8876 | STRLEN ulen; |
211dfcf1 HS |
8877 | if (!veclen) |
8878 | continue; | |
2cf2cfc6 A |
8879 | if (vec_utf8) |
8880 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
8881 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 8882 | else { |
e83d50c9 | 8883 | uv = *vecstr; |
b22c7a20 GS |
8884 | ulen = 1; |
8885 | } | |
8886 | vecstr += ulen; | |
8887 | veclen -= ulen; | |
e83d50c9 JP |
8888 | if (plus) |
8889 | esignbuf[esignlen++] = plus; | |
b22c7a20 GS |
8890 | } |
8891 | else if (args) { | |
46fc3d4c | 8892 | switch (intsize) { |
8893 | case 'h': iv = (short)va_arg(*args, int); break; | |
8894 | default: iv = va_arg(*args, int); break; | |
8895 | case 'l': iv = va_arg(*args, long); break; | |
fc36a67e | 8896 | case 'V': iv = va_arg(*args, IV); break; |
cf2093f6 JH |
8897 | #ifdef HAS_QUAD |
8898 | case 'q': iv = va_arg(*args, Quad_t); break; | |
8899 | #endif | |
46fc3d4c | 8900 | } |
8901 | } | |
8902 | else { | |
211dfcf1 | 8903 | iv = SvIVx(argsv); |
46fc3d4c | 8904 | switch (intsize) { |
8905 | case 'h': iv = (short)iv; break; | |
be28567c | 8906 | default: break; |
46fc3d4c | 8907 | case 'l': iv = (long)iv; break; |
fc36a67e | 8908 | case 'V': break; |
cf2093f6 JH |
8909 | #ifdef HAS_QUAD |
8910 | case 'q': iv = (Quad_t)iv; break; | |
8911 | #endif | |
46fc3d4c | 8912 | } |
8913 | } | |
e83d50c9 JP |
8914 | if ( !vectorize ) /* we already set uv above */ |
8915 | { | |
8916 | if (iv >= 0) { | |
8917 | uv = iv; | |
8918 | if (plus) | |
8919 | esignbuf[esignlen++] = plus; | |
8920 | } | |
8921 | else { | |
8922 | uv = -iv; | |
8923 | esignbuf[esignlen++] = '-'; | |
8924 | } | |
46fc3d4c | 8925 | } |
8926 | base = 10; | |
8927 | goto integer; | |
8928 | ||
fc36a67e | 8929 | case 'U': |
29fe7a80 | 8930 | #ifdef IV_IS_QUAD |
22f3ae8c | 8931 | intsize = 'q'; |
29fe7a80 | 8932 | #else |
fc36a67e | 8933 | intsize = 'l'; |
29fe7a80 | 8934 | #endif |
fc36a67e | 8935 | /* FALL THROUGH */ |
8936 | case 'u': | |
8937 | base = 10; | |
8938 | goto uns_integer; | |
8939 | ||
4f19785b WSI |
8940 | case 'b': |
8941 | base = 2; | |
8942 | goto uns_integer; | |
8943 | ||
46fc3d4c | 8944 | case 'O': |
29fe7a80 | 8945 | #ifdef IV_IS_QUAD |
22f3ae8c | 8946 | intsize = 'q'; |
29fe7a80 | 8947 | #else |
46fc3d4c | 8948 | intsize = 'l'; |
29fe7a80 | 8949 | #endif |
46fc3d4c | 8950 | /* FALL THROUGH */ |
8951 | case 'o': | |
8952 | base = 8; | |
8953 | goto uns_integer; | |
8954 | ||
8955 | case 'X': | |
46fc3d4c | 8956 | case 'x': |
8957 | base = 16; | |
46fc3d4c | 8958 | |
8959 | uns_integer: | |
b22c7a20 | 8960 | if (vectorize) { |
ba210ebe | 8961 | STRLEN ulen; |
b22c7a20 | 8962 | vector: |
211dfcf1 HS |
8963 | if (!veclen) |
8964 | continue; | |
2cf2cfc6 A |
8965 | if (vec_utf8) |
8966 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
8967 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 8968 | else { |
a05b299f | 8969 | uv = *vecstr; |
b22c7a20 GS |
8970 | ulen = 1; |
8971 | } | |
8972 | vecstr += ulen; | |
8973 | veclen -= ulen; | |
8974 | } | |
8975 | else if (args) { | |
46fc3d4c | 8976 | switch (intsize) { |
8977 | case 'h': uv = (unsigned short)va_arg(*args, unsigned); break; | |
8978 | default: uv = va_arg(*args, unsigned); break; | |
8979 | case 'l': uv = va_arg(*args, unsigned long); break; | |
fc36a67e | 8980 | case 'V': uv = va_arg(*args, UV); break; |
cf2093f6 JH |
8981 | #ifdef HAS_QUAD |
8982 | case 'q': uv = va_arg(*args, Quad_t); break; | |
8983 | #endif | |
46fc3d4c | 8984 | } |
8985 | } | |
8986 | else { | |
211dfcf1 | 8987 | uv = SvUVx(argsv); |
46fc3d4c | 8988 | switch (intsize) { |
8989 | case 'h': uv = (unsigned short)uv; break; | |
be28567c | 8990 | default: break; |
46fc3d4c | 8991 | case 'l': uv = (unsigned long)uv; break; |
fc36a67e | 8992 | case 'V': break; |
cf2093f6 JH |
8993 | #ifdef HAS_QUAD |
8994 | case 'q': uv = (Quad_t)uv; break; | |
8995 | #endif | |
46fc3d4c | 8996 | } |
8997 | } | |
8998 | ||
8999 | integer: | |
46fc3d4c | 9000 | eptr = ebuf + sizeof ebuf; |
fc36a67e | 9001 | switch (base) { |
9002 | unsigned dig; | |
9003 | case 16: | |
c10ed8b9 HS |
9004 | if (!uv) |
9005 | alt = FALSE; | |
1d7c1841 GS |
9006 | p = (char*)((c == 'X') |
9007 | ? "0123456789ABCDEF" : "0123456789abcdef"); | |
fc36a67e | 9008 | do { |
9009 | dig = uv & 15; | |
9010 | *--eptr = p[dig]; | |
9011 | } while (uv >>= 4); | |
9012 | if (alt) { | |
46fc3d4c | 9013 | esignbuf[esignlen++] = '0'; |
fc36a67e | 9014 | esignbuf[esignlen++] = c; /* 'x' or 'X' */ |
46fc3d4c | 9015 | } |
fc36a67e | 9016 | break; |
9017 | case 8: | |
9018 | do { | |
9019 | dig = uv & 7; | |
9020 | *--eptr = '0' + dig; | |
9021 | } while (uv >>= 3); | |
9022 | if (alt && *eptr != '0') | |
9023 | *--eptr = '0'; | |
9024 | break; | |
4f19785b WSI |
9025 | case 2: |
9026 | do { | |
9027 | dig = uv & 1; | |
9028 | *--eptr = '0' + dig; | |
9029 | } while (uv >>= 1); | |
eda88b6d JH |
9030 | if (alt) { |
9031 | esignbuf[esignlen++] = '0'; | |
7481bb52 | 9032 | esignbuf[esignlen++] = 'b'; |
eda88b6d | 9033 | } |
4f19785b | 9034 | break; |
fc36a67e | 9035 | default: /* it had better be ten or less */ |
6bc102ca | 9036 | #if defined(PERL_Y2KWARN) |
e476b1b5 | 9037 | if (ckWARN(WARN_Y2K)) { |
6bc102ca GS |
9038 | STRLEN n; |
9039 | char *s = SvPV(sv,n); | |
9040 | if (n >= 2 && s[n-2] == '1' && s[n-1] == '9' | |
9041 | && (n == 2 || !isDIGIT(s[n-3]))) | |
9042 | { | |
9014280d | 9043 | Perl_warner(aTHX_ packWARN(WARN_Y2K), |
6bc102ca GS |
9044 | "Possible Y2K bug: %%%c %s", |
9045 | c, "format string following '19'"); | |
9046 | } | |
9047 | } | |
9048 | #endif | |
fc36a67e | 9049 | do { |
9050 | dig = uv % base; | |
9051 | *--eptr = '0' + dig; | |
9052 | } while (uv /= base); | |
9053 | break; | |
46fc3d4c | 9054 | } |
9055 | elen = (ebuf + sizeof ebuf) - eptr; | |
c10ed8b9 HS |
9056 | if (has_precis) { |
9057 | if (precis > elen) | |
9058 | zeros = precis - elen; | |
9059 | else if (precis == 0 && elen == 1 && *eptr == '0') | |
9060 | elen = 0; | |
9061 | } | |
46fc3d4c | 9062 | break; |
9063 | ||
9064 | /* FLOATING POINT */ | |
9065 | ||
fc36a67e | 9066 | case 'F': |
9067 | c = 'f'; /* maybe %F isn't supported here */ | |
9068 | /* FALL THROUGH */ | |
46fc3d4c | 9069 | case 'e': case 'E': |
fc36a67e | 9070 | case 'f': |
46fc3d4c | 9071 | case 'g': case 'G': |
9072 | ||
9073 | /* This is evil, but floating point is even more evil */ | |
9074 | ||
9e5b023a JH |
9075 | /* for SV-style calling, we can only get NV |
9076 | for C-style calling, we assume %f is double; | |
9077 | for simplicity we allow any of %Lf, %llf, %qf for long double | |
9078 | */ | |
9079 | switch (intsize) { | |
9080 | case 'V': | |
9081 | #if defined(USE_LONG_DOUBLE) | |
9082 | intsize = 'q'; | |
9083 | #endif | |
9084 | break; | |
8a2e3f14 | 9085 | /* [perl #20339] - we should accept and ignore %lf rather than die */ |
00e17364 HS |
9086 | case 'l': |
9087 | /* FALL THROUGH */ | |
9e5b023a JH |
9088 | default: |
9089 | #if defined(USE_LONG_DOUBLE) | |
9090 | intsize = args ? 0 : 'q'; | |
9091 | #endif | |
9092 | break; | |
9093 | case 'q': | |
9094 | #if defined(HAS_LONG_DOUBLE) | |
9095 | break; | |
9096 | #else | |
9097 | /* FALL THROUGH */ | |
9098 | #endif | |
9099 | case 'h': | |
9e5b023a JH |
9100 | goto unknown; |
9101 | } | |
9102 | ||
9103 | /* now we need (long double) if intsize == 'q', else (double) */ | |
be75b157 | 9104 | nv = (args && !vectorize) ? |
35fff930 JH |
9105 | #if LONG_DOUBLESIZE > DOUBLESIZE |
9106 | intsize == 'q' ? | |
205f51d8 AS |
9107 | va_arg(*args, long double) : |
9108 | va_arg(*args, double) | |
35fff930 | 9109 | #else |
205f51d8 | 9110 | va_arg(*args, double) |
35fff930 | 9111 | #endif |
9e5b023a | 9112 | : SvNVx(argsv); |
fc36a67e | 9113 | |
9114 | need = 0; | |
be75b157 | 9115 | vectorize = FALSE; |
fc36a67e | 9116 | if (c != 'e' && c != 'E') { |
9117 | i = PERL_INT_MIN; | |
9e5b023a JH |
9118 | /* FIXME: if HAS_LONG_DOUBLE but not USE_LONG_DOUBLE this |
9119 | will cast our (long double) to (double) */ | |
73b309ea | 9120 | (void)Perl_frexp(nv, &i); |
fc36a67e | 9121 | if (i == PERL_INT_MIN) |
cea2e8a9 | 9122 | Perl_die(aTHX_ "panic: frexp"); |
c635e13b | 9123 | if (i > 0) |
fc36a67e | 9124 | need = BIT_DIGITS(i); |
9125 | } | |
9126 | need += has_precis ? precis : 6; /* known default */ | |
20f6aaab | 9127 | |
fc36a67e | 9128 | if (need < width) |
9129 | need = width; | |
9130 | ||
20f6aaab AS |
9131 | #ifdef HAS_LDBL_SPRINTF_BUG |
9132 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 AS |
9133 | with sfio - Allen <allens@cpan.org> */ |
9134 | ||
9135 | # ifdef DBL_MAX | |
9136 | # define MY_DBL_MAX DBL_MAX | |
9137 | # else /* XXX guessing! HUGE_VAL may be defined as infinity, so not using */ | |
9138 | # if DOUBLESIZE >= 8 | |
9139 | # define MY_DBL_MAX 1.7976931348623157E+308L | |
9140 | # else | |
9141 | # define MY_DBL_MAX 3.40282347E+38L | |
9142 | # endif | |
9143 | # endif | |
9144 | ||
9145 | # ifdef HAS_LDBL_SPRINTF_BUG_LESS1 /* only between -1L & 1L - Allen */ | |
9146 | # define MY_DBL_MAX_BUG 1L | |
20f6aaab | 9147 | # else |
205f51d8 | 9148 | # define MY_DBL_MAX_BUG MY_DBL_MAX |
20f6aaab | 9149 | # endif |
20f6aaab | 9150 | |
205f51d8 AS |
9151 | # ifdef DBL_MIN |
9152 | # define MY_DBL_MIN DBL_MIN | |
9153 | # else /* XXX guessing! -Allen */ | |
9154 | # if DOUBLESIZE >= 8 | |
9155 | # define MY_DBL_MIN 2.2250738585072014E-308L | |
9156 | # else | |
9157 | # define MY_DBL_MIN 1.17549435E-38L | |
9158 | # endif | |
9159 | # endif | |
20f6aaab | 9160 | |
205f51d8 AS |
9161 | if ((intsize == 'q') && (c == 'f') && |
9162 | ((nv < MY_DBL_MAX_BUG) && (nv > -MY_DBL_MAX_BUG)) && | |
9163 | (need < DBL_DIG)) { | |
9164 | /* it's going to be short enough that | |
9165 | * long double precision is not needed */ | |
9166 | ||
9167 | if ((nv <= 0L) && (nv >= -0L)) | |
9168 | fix_ldbl_sprintf_bug = TRUE; /* 0 is 0 - easiest */ | |
9169 | else { | |
9170 | /* would use Perl_fp_class as a double-check but not | |
9171 | * functional on IRIX - see perl.h comments */ | |
9172 | ||
9173 | if ((nv >= MY_DBL_MIN) || (nv <= -MY_DBL_MIN)) { | |
9174 | /* It's within the range that a double can represent */ | |
9175 | #if defined(DBL_MAX) && !defined(DBL_MIN) | |
9176 | if ((nv >= ((long double)1/DBL_MAX)) || | |
9177 | (nv <= (-(long double)1/DBL_MAX))) | |
20f6aaab | 9178 | #endif |
205f51d8 | 9179 | fix_ldbl_sprintf_bug = TRUE; |
20f6aaab | 9180 | } |
205f51d8 AS |
9181 | } |
9182 | if (fix_ldbl_sprintf_bug == TRUE) { | |
9183 | double temp; | |
9184 | ||
9185 | intsize = 0; | |
9186 | temp = (double)nv; | |
9187 | nv = (NV)temp; | |
9188 | } | |
20f6aaab | 9189 | } |
205f51d8 AS |
9190 | |
9191 | # undef MY_DBL_MAX | |
9192 | # undef MY_DBL_MAX_BUG | |
9193 | # undef MY_DBL_MIN | |
9194 | ||
20f6aaab AS |
9195 | #endif /* HAS_LDBL_SPRINTF_BUG */ |
9196 | ||
46fc3d4c | 9197 | need += 20; /* fudge factor */ |
80252599 GS |
9198 | if (PL_efloatsize < need) { |
9199 | Safefree(PL_efloatbuf); | |
9200 | PL_efloatsize = need + 20; /* more fudge */ | |
9201 | New(906, PL_efloatbuf, PL_efloatsize, char); | |
7d5ea4e7 | 9202 | PL_efloatbuf[0] = '\0'; |
46fc3d4c | 9203 | } |
9204 | ||
9205 | eptr = ebuf + sizeof ebuf; | |
9206 | *--eptr = '\0'; | |
9207 | *--eptr = c; | |
9e5b023a JH |
9208 | /* FIXME: what to do if HAS_LONG_DOUBLE but not PERL_PRIfldbl? */ |
9209 | #if defined(HAS_LONG_DOUBLE) && defined(PERL_PRIfldbl) | |
9210 | if (intsize == 'q') { | |
e5c81feb JH |
9211 | /* Copy the one or more characters in a long double |
9212 | * format before the 'base' ([efgEFG]) character to | |
9213 | * the format string. */ | |
9214 | static char const prifldbl[] = PERL_PRIfldbl; | |
9215 | char const *p = prifldbl + sizeof(prifldbl) - 3; | |
9216 | while (p >= prifldbl) { *--eptr = *p--; } | |
cf2093f6 | 9217 | } |
65202027 | 9218 | #endif |
46fc3d4c | 9219 | if (has_precis) { |
9220 | base = precis; | |
9221 | do { *--eptr = '0' + (base % 10); } while (base /= 10); | |
9222 | *--eptr = '.'; | |
9223 | } | |
9224 | if (width) { | |
9225 | base = width; | |
9226 | do { *--eptr = '0' + (base % 10); } while (base /= 10); | |
9227 | } | |
9228 | if (fill == '0') | |
9229 | *--eptr = fill; | |
84902520 TB |
9230 | if (left) |
9231 | *--eptr = '-'; | |
46fc3d4c | 9232 | if (plus) |
9233 | *--eptr = plus; | |
9234 | if (alt) | |
9235 | *--eptr = '#'; | |
9236 | *--eptr = '%'; | |
9237 | ||
ff9121f8 JH |
9238 | /* No taint. Otherwise we are in the strange situation |
9239 | * where printf() taints but print($float) doesn't. | |
bda0f7a5 | 9240 | * --jhi */ |
9e5b023a JH |
9241 | #if defined(HAS_LONG_DOUBLE) |
9242 | if (intsize == 'q') | |
9243 | (void)sprintf(PL_efloatbuf, eptr, nv); | |
9244 | else | |
9245 | (void)sprintf(PL_efloatbuf, eptr, (double)nv); | |
9246 | #else | |
dd8482fc | 9247 | (void)sprintf(PL_efloatbuf, eptr, nv); |
9e5b023a | 9248 | #endif |
80252599 GS |
9249 | eptr = PL_efloatbuf; |
9250 | elen = strlen(PL_efloatbuf); | |
46fc3d4c | 9251 | break; |
9252 | ||
fc36a67e | 9253 | /* SPECIAL */ |
9254 | ||
9255 | case 'n': | |
9256 | i = SvCUR(sv) - origlen; | |
be75b157 | 9257 | if (args && !vectorize) { |
c635e13b | 9258 | switch (intsize) { |
9259 | case 'h': *(va_arg(*args, short*)) = i; break; | |
9260 | default: *(va_arg(*args, int*)) = i; break; | |
9261 | case 'l': *(va_arg(*args, long*)) = i; break; | |
9262 | case 'V': *(va_arg(*args, IV*)) = i; break; | |
cf2093f6 JH |
9263 | #ifdef HAS_QUAD |
9264 | case 'q': *(va_arg(*args, Quad_t*)) = i; break; | |
9265 | #endif | |
c635e13b | 9266 | } |
fc36a67e | 9267 | } |
9dd79c3f | 9268 | else |
211dfcf1 | 9269 | sv_setuv_mg(argsv, (UV)i); |
be75b157 | 9270 | vectorize = FALSE; |
fc36a67e | 9271 | continue; /* not "break" */ |
9272 | ||
9273 | /* UNKNOWN */ | |
9274 | ||
46fc3d4c | 9275 | default: |
fc36a67e | 9276 | unknown: |
599cee73 | 9277 | if (!args && ckWARN(WARN_PRINTF) && |
533c011a | 9278 | (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) { |
c635e13b | 9279 | SV *msg = sv_newmortal(); |
35c1215d NC |
9280 | Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %sprintf: ", |
9281 | (PL_op->op_type == OP_PRTF) ? "" : "s"); | |
0f4b6630 | 9282 | if (c) { |
0f4b6630 | 9283 | if (isPRINT(c)) |
1c846c1f | 9284 | Perl_sv_catpvf(aTHX_ msg, |
0f4b6630 JH |
9285 | "\"%%%c\"", c & 0xFF); |
9286 | else | |
9287 | Perl_sv_catpvf(aTHX_ msg, | |
57def98f | 9288 | "\"%%\\%03"UVof"\"", |
0f4b6630 | 9289 | (UV)c & 0xFF); |
0f4b6630 | 9290 | } else |
c635e13b | 9291 | sv_catpv(msg, "end of string"); |
9014280d | 9292 | Perl_warner(aTHX_ packWARN(WARN_PRINTF), "%"SVf, msg); /* yes, this is reentrant */ |
c635e13b | 9293 | } |
fb73857a | 9294 | |
9295 | /* output mangled stuff ... */ | |
9296 | if (c == '\0') | |
9297 | --q; | |
46fc3d4c | 9298 | eptr = p; |
9299 | elen = q - p; | |
fb73857a | 9300 | |
9301 | /* ... right here, because formatting flags should not apply */ | |
9302 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
9303 | p = SvEND(sv); | |
4459522c | 9304 | Copy(eptr, p, elen, char); |
fb73857a | 9305 | p += elen; |
9306 | *p = '\0'; | |
9307 | SvCUR(sv) = p - SvPVX(sv); | |
58e33a90 | 9308 | svix = osvix; |
fb73857a | 9309 | continue; /* not "break" */ |
46fc3d4c | 9310 | } |
9311 | ||
d2876be5 JH |
9312 | if (is_utf8 != has_utf8) { |
9313 | if (is_utf8) { | |
9314 | if (SvCUR(sv)) | |
9315 | sv_utf8_upgrade(sv); | |
9316 | } | |
9317 | else { | |
9318 | SV *nsv = sv_2mortal(newSVpvn(eptr, elen)); | |
9319 | sv_utf8_upgrade(nsv); | |
9320 | eptr = SvPVX(nsv); | |
9321 | elen = SvCUR(nsv); | |
9322 | } | |
9323 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
9324 | p = SvEND(sv); | |
9325 | *p = '\0'; | |
9326 | } | |
9327 | ||
fc36a67e | 9328 | have = esignlen + zeros + elen; |
46fc3d4c | 9329 | need = (have > width ? have : width); |
9330 | gap = need - have; | |
9331 | ||
b22c7a20 | 9332 | SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1); |
46fc3d4c | 9333 | p = SvEND(sv); |
9334 | if (esignlen && fill == '0') { | |
eb160463 | 9335 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 9336 | *p++ = esignbuf[i]; |
9337 | } | |
9338 | if (gap && !left) { | |
9339 | memset(p, fill, gap); | |
9340 | p += gap; | |
9341 | } | |
9342 | if (esignlen && fill != '0') { | |
eb160463 | 9343 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 9344 | *p++ = esignbuf[i]; |
9345 | } | |
fc36a67e | 9346 | if (zeros) { |
9347 | for (i = zeros; i; i--) | |
9348 | *p++ = '0'; | |
9349 | } | |
46fc3d4c | 9350 | if (elen) { |
4459522c | 9351 | Copy(eptr, p, elen, char); |
46fc3d4c | 9352 | p += elen; |
9353 | } | |
9354 | if (gap && left) { | |
9355 | memset(p, ' ', gap); | |
9356 | p += gap; | |
9357 | } | |
b22c7a20 GS |
9358 | if (vectorize) { |
9359 | if (veclen) { | |
4459522c | 9360 | Copy(dotstr, p, dotstrlen, char); |
b22c7a20 GS |
9361 | p += dotstrlen; |
9362 | } | |
9363 | else | |
9364 | vectorize = FALSE; /* done iterating over vecstr */ | |
9365 | } | |
2cf2cfc6 A |
9366 | if (is_utf8) |
9367 | has_utf8 = TRUE; | |
9368 | if (has_utf8) | |
7e2040f0 | 9369 | SvUTF8_on(sv); |
46fc3d4c | 9370 | *p = '\0'; |
9371 | SvCUR(sv) = p - SvPVX(sv); | |
b22c7a20 GS |
9372 | if (vectorize) { |
9373 | esignlen = 0; | |
9374 | goto vector; | |
9375 | } | |
46fc3d4c | 9376 | } |
9377 | } | |
51371543 | 9378 | |
645c22ef DM |
9379 | /* ========================================================================= |
9380 | ||
9381 | =head1 Cloning an interpreter | |
9382 | ||
9383 | All the macros and functions in this section are for the private use of | |
9384 | the main function, perl_clone(). | |
9385 | ||
9386 | The foo_dup() functions make an exact copy of an existing foo thinngy. | |
9387 | During the course of a cloning, a hash table is used to map old addresses | |
9388 | to new addresses. The table is created and manipulated with the | |
9389 | ptr_table_* functions. | |
9390 | ||
9391 | =cut | |
9392 | ||
9393 | ============================================================================*/ | |
9394 | ||
9395 | ||
1d7c1841 GS |
9396 | #if defined(USE_ITHREADS) |
9397 | ||
1d7c1841 GS |
9398 | #ifndef GpREFCNT_inc |
9399 | # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL) | |
9400 | #endif | |
9401 | ||
9402 | ||
d2d73c3e AB |
9403 | #define sv_dup_inc(s,t) SvREFCNT_inc(sv_dup(s,t)) |
9404 | #define av_dup(s,t) (AV*)sv_dup((SV*)s,t) | |
9405 | #define av_dup_inc(s,t) (AV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9406 | #define hv_dup(s,t) (HV*)sv_dup((SV*)s,t) | |
9407 | #define hv_dup_inc(s,t) (HV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9408 | #define cv_dup(s,t) (CV*)sv_dup((SV*)s,t) | |
9409 | #define cv_dup_inc(s,t) (CV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9410 | #define io_dup(s,t) (IO*)sv_dup((SV*)s,t) | |
9411 | #define io_dup_inc(s,t) (IO*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9412 | #define gv_dup(s,t) (GV*)sv_dup((SV*)s,t) | |
9413 | #define gv_dup_inc(s,t) (GV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
1d7c1841 GS |
9414 | #define SAVEPV(p) (p ? savepv(p) : Nullch) |
9415 | #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch) | |
8cf8f3d1 | 9416 | |
d2d73c3e | 9417 | |
d2f185dc AMS |
9418 | /* Duplicate a regexp. Required reading: pregcomp() and pregfree() in |
9419 | regcomp.c. AMS 20010712 */ | |
645c22ef | 9420 | |
1d7c1841 | 9421 | REGEXP * |
a8fc9800 | 9422 | Perl_re_dup(pTHX_ REGEXP *r, CLONE_PARAMS *param) |
1d7c1841 | 9423 | { |
d2f185dc AMS |
9424 | REGEXP *ret; |
9425 | int i, len, npar; | |
9426 | struct reg_substr_datum *s; | |
9427 | ||
9428 | if (!r) | |
9429 | return (REGEXP *)NULL; | |
9430 | ||
9431 | if ((ret = (REGEXP *)ptr_table_fetch(PL_ptr_table, r))) | |
9432 | return ret; | |
9433 | ||
9434 | len = r->offsets[0]; | |
9435 | npar = r->nparens+1; | |
9436 | ||
9437 | Newc(0, ret, sizeof(regexp) + (len+1)*sizeof(regnode), char, regexp); | |
9438 | Copy(r->program, ret->program, len+1, regnode); | |
9439 | ||
9440 | New(0, ret->startp, npar, I32); | |
9441 | Copy(r->startp, ret->startp, npar, I32); | |
9442 | New(0, ret->endp, npar, I32); | |
9443 | Copy(r->startp, ret->startp, npar, I32); | |
9444 | ||
d2f185dc AMS |
9445 | New(0, ret->substrs, 1, struct reg_substr_data); |
9446 | for (s = ret->substrs->data, i = 0; i < 3; i++, s++) { | |
9447 | s->min_offset = r->substrs->data[i].min_offset; | |
9448 | s->max_offset = r->substrs->data[i].max_offset; | |
9449 | s->substr = sv_dup_inc(r->substrs->data[i].substr, param); | |
33b8afdf | 9450 | s->utf8_substr = sv_dup_inc(r->substrs->data[i].utf8_substr, param); |
d2f185dc AMS |
9451 | } |
9452 | ||
70612e96 | 9453 | ret->regstclass = NULL; |
d2f185dc AMS |
9454 | if (r->data) { |
9455 | struct reg_data *d; | |
9456 | int count = r->data->count; | |
9457 | ||
9458 | Newc(0, d, sizeof(struct reg_data) + count*sizeof(void *), | |
9459 | char, struct reg_data); | |
9460 | New(0, d->what, count, U8); | |
9461 | ||
9462 | d->count = count; | |
9463 | for (i = 0; i < count; i++) { | |
9464 | d->what[i] = r->data->what[i]; | |
9465 | switch (d->what[i]) { | |
9466 | case 's': | |
9467 | d->data[i] = sv_dup_inc((SV *)r->data->data[i], param); | |
9468 | break; | |
9469 | case 'p': | |
9470 | d->data[i] = av_dup_inc((AV *)r->data->data[i], param); | |
9471 | break; | |
9472 | case 'f': | |
9473 | /* This is cheating. */ | |
9474 | New(0, d->data[i], 1, struct regnode_charclass_class); | |
9475 | StructCopy(r->data->data[i], d->data[i], | |
9476 | struct regnode_charclass_class); | |
70612e96 | 9477 | ret->regstclass = (regnode*)d->data[i]; |
d2f185dc AMS |
9478 | break; |
9479 | case 'o': | |
33773810 AMS |
9480 | /* Compiled op trees are readonly, and can thus be |
9481 | shared without duplication. */ | |
9b978d73 DM |
9482 | d->data[i] = (void*)OpREFCNT_inc((OP*)r->data->data[i]); |
9483 | break; | |
d2f185dc AMS |
9484 | case 'n': |
9485 | d->data[i] = r->data->data[i]; | |
9486 | break; | |
9487 | } | |
9488 | } | |
9489 | ||
9490 | ret->data = d; | |
9491 | } | |
9492 | else | |
9493 | ret->data = NULL; | |
9494 | ||
9495 | New(0, ret->offsets, 2*len+1, U32); | |
9496 | Copy(r->offsets, ret->offsets, 2*len+1, U32); | |
9497 | ||
9498 | ret->precomp = SAVEPV(r->precomp); | |
d2f185dc AMS |
9499 | ret->refcnt = r->refcnt; |
9500 | ret->minlen = r->minlen; | |
9501 | ret->prelen = r->prelen; | |
9502 | ret->nparens = r->nparens; | |
9503 | ret->lastparen = r->lastparen; | |
9504 | ret->lastcloseparen = r->lastcloseparen; | |
9505 | ret->reganch = r->reganch; | |
9506 | ||
70612e96 RG |
9507 | ret->sublen = r->sublen; |
9508 | ||
9509 | if (RX_MATCH_COPIED(ret)) | |
9510 | ret->subbeg = SAVEPV(r->subbeg); | |
9511 | else | |
9512 | ret->subbeg = Nullch; | |
9a26048b NC |
9513 | #ifdef PERL_COPY_ON_WRITE |
9514 | ret->saved_copy = Nullsv; | |
9515 | #endif | |
70612e96 | 9516 | |
d2f185dc AMS |
9517 | ptr_table_store(PL_ptr_table, r, ret); |
9518 | return ret; | |
1d7c1841 GS |
9519 | } |
9520 | ||
d2d73c3e | 9521 | /* duplicate a file handle */ |
645c22ef | 9522 | |
1d7c1841 | 9523 | PerlIO * |
a8fc9800 | 9524 | Perl_fp_dup(pTHX_ PerlIO *fp, char type, CLONE_PARAMS *param) |
1d7c1841 GS |
9525 | { |
9526 | PerlIO *ret; | |
9527 | if (!fp) | |
9528 | return (PerlIO*)NULL; | |
9529 | ||
9530 | /* look for it in the table first */ | |
9531 | ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp); | |
9532 | if (ret) | |
9533 | return ret; | |
9534 | ||
9535 | /* create anew and remember what it is */ | |
ecdeb87c | 9536 | ret = PerlIO_fdupopen(aTHX_ fp, param, PERLIO_DUP_CLONE); |
1d7c1841 GS |
9537 | ptr_table_store(PL_ptr_table, fp, ret); |
9538 | return ret; | |
9539 | } | |
9540 | ||
645c22ef DM |
9541 | /* duplicate a directory handle */ |
9542 | ||
1d7c1841 GS |
9543 | DIR * |
9544 | Perl_dirp_dup(pTHX_ DIR *dp) | |
9545 | { | |
9546 | if (!dp) | |
9547 | return (DIR*)NULL; | |
9548 | /* XXX TODO */ | |
9549 | return dp; | |
9550 | } | |
9551 | ||
ff276b08 | 9552 | /* duplicate a typeglob */ |
645c22ef | 9553 | |
1d7c1841 | 9554 | GP * |
a8fc9800 | 9555 | Perl_gp_dup(pTHX_ GP *gp, CLONE_PARAMS* param) |
1d7c1841 GS |
9556 | { |
9557 | GP *ret; | |
9558 | if (!gp) | |
9559 | return (GP*)NULL; | |
9560 | /* look for it in the table first */ | |
9561 | ret = (GP*)ptr_table_fetch(PL_ptr_table, gp); | |
9562 | if (ret) | |
9563 | return ret; | |
9564 | ||
9565 | /* create anew and remember what it is */ | |
9566 | Newz(0, ret, 1, GP); | |
9567 | ptr_table_store(PL_ptr_table, gp, ret); | |
9568 | ||
9569 | /* clone */ | |
9570 | ret->gp_refcnt = 0; /* must be before any other dups! */ | |
d2d73c3e AB |
9571 | ret->gp_sv = sv_dup_inc(gp->gp_sv, param); |
9572 | ret->gp_io = io_dup_inc(gp->gp_io, param); | |
9573 | ret->gp_form = cv_dup_inc(gp->gp_form, param); | |
9574 | ret->gp_av = av_dup_inc(gp->gp_av, param); | |
9575 | ret->gp_hv = hv_dup_inc(gp->gp_hv, param); | |
9576 | ret->gp_egv = gv_dup(gp->gp_egv, param);/* GvEGV is not refcounted */ | |
9577 | ret->gp_cv = cv_dup_inc(gp->gp_cv, param); | |
1d7c1841 GS |
9578 | ret->gp_cvgen = gp->gp_cvgen; |
9579 | ret->gp_flags = gp->gp_flags; | |
9580 | ret->gp_line = gp->gp_line; | |
9581 | ret->gp_file = gp->gp_file; /* points to COP.cop_file */ | |
9582 | return ret; | |
9583 | } | |
9584 | ||
645c22ef DM |
9585 | /* duplicate a chain of magic */ |
9586 | ||
1d7c1841 | 9587 | MAGIC * |
a8fc9800 | 9588 | Perl_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS* param) |
1d7c1841 | 9589 | { |
cb359b41 JH |
9590 | MAGIC *mgprev = (MAGIC*)NULL; |
9591 | MAGIC *mgret; | |
1d7c1841 GS |
9592 | if (!mg) |
9593 | return (MAGIC*)NULL; | |
9594 | /* look for it in the table first */ | |
9595 | mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg); | |
9596 | if (mgret) | |
9597 | return mgret; | |
9598 | ||
9599 | for (; mg; mg = mg->mg_moremagic) { | |
9600 | MAGIC *nmg; | |
9601 | Newz(0, nmg, 1, MAGIC); | |
cb359b41 | 9602 | if (mgprev) |
1d7c1841 | 9603 | mgprev->mg_moremagic = nmg; |
cb359b41 JH |
9604 | else |
9605 | mgret = nmg; | |
1d7c1841 GS |
9606 | nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */ |
9607 | nmg->mg_private = mg->mg_private; | |
9608 | nmg->mg_type = mg->mg_type; | |
9609 | nmg->mg_flags = mg->mg_flags; | |
14befaf4 | 9610 | if (mg->mg_type == PERL_MAGIC_qr) { |
d2f185dc | 9611 | nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj, param); |
1d7c1841 | 9612 | } |
05bd4103 JH |
9613 | else if(mg->mg_type == PERL_MAGIC_backref) { |
9614 | AV *av = (AV*) mg->mg_obj; | |
9615 | SV **svp; | |
9616 | I32 i; | |
9617 | nmg->mg_obj = (SV*)newAV(); | |
9618 | svp = AvARRAY(av); | |
9619 | i = AvFILLp(av); | |
9620 | while (i >= 0) { | |
9621 | av_push((AV*)nmg->mg_obj,sv_dup(svp[i],param)); | |
9622 | i--; | |
9623 | } | |
9624 | } | |
1d7c1841 GS |
9625 | else { |
9626 | nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED) | |
d2d73c3e AB |
9627 | ? sv_dup_inc(mg->mg_obj, param) |
9628 | : sv_dup(mg->mg_obj, param); | |
1d7c1841 GS |
9629 | } |
9630 | nmg->mg_len = mg->mg_len; | |
9631 | nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */ | |
14befaf4 | 9632 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
68795e93 | 9633 | if (mg->mg_len > 0) { |
1d7c1841 | 9634 | nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len); |
14befaf4 DM |
9635 | if (mg->mg_type == PERL_MAGIC_overload_table && |
9636 | AMT_AMAGIC((AMT*)mg->mg_ptr)) | |
9637 | { | |
1d7c1841 GS |
9638 | AMT *amtp = (AMT*)mg->mg_ptr; |
9639 | AMT *namtp = (AMT*)nmg->mg_ptr; | |
9640 | I32 i; | |
9641 | for (i = 1; i < NofAMmeth; i++) { | |
d2d73c3e | 9642 | namtp->table[i] = cv_dup_inc(amtp->table[i], param); |
1d7c1841 GS |
9643 | } |
9644 | } | |
9645 | } | |
9646 | else if (mg->mg_len == HEf_SVKEY) | |
d2d73c3e | 9647 | nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr, param); |
1d7c1841 | 9648 | } |
68795e93 NIS |
9649 | if ((mg->mg_flags & MGf_DUP) && mg->mg_virtual && mg->mg_virtual->svt_dup) { |
9650 | CALL_FPTR(nmg->mg_virtual->svt_dup)(aTHX_ nmg, param); | |
9651 | } | |
1d7c1841 GS |
9652 | mgprev = nmg; |
9653 | } | |
9654 | return mgret; | |
9655 | } | |
9656 | ||
645c22ef DM |
9657 | /* create a new pointer-mapping table */ |
9658 | ||
1d7c1841 GS |
9659 | PTR_TBL_t * |
9660 | Perl_ptr_table_new(pTHX) | |
9661 | { | |
9662 | PTR_TBL_t *tbl; | |
9663 | Newz(0, tbl, 1, PTR_TBL_t); | |
9664 | tbl->tbl_max = 511; | |
9665 | tbl->tbl_items = 0; | |
9666 | Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*); | |
9667 | return tbl; | |
9668 | } | |
9669 | ||
645c22ef DM |
9670 | /* map an existing pointer using a table */ |
9671 | ||
1d7c1841 GS |
9672 | void * |
9673 | Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv) | |
9674 | { | |
9675 | PTR_TBL_ENT_t *tblent; | |
d2a79402 | 9676 | UV hash = PTR2UV(sv); |
1d7c1841 GS |
9677 | assert(tbl); |
9678 | tblent = tbl->tbl_ary[hash & tbl->tbl_max]; | |
9679 | for (; tblent; tblent = tblent->next) { | |
9680 | if (tblent->oldval == sv) | |
9681 | return tblent->newval; | |
9682 | } | |
9683 | return (void*)NULL; | |
9684 | } | |
9685 | ||
645c22ef DM |
9686 | /* add a new entry to a pointer-mapping table */ |
9687 | ||
1d7c1841 GS |
9688 | void |
9689 | Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv) | |
9690 | { | |
9691 | PTR_TBL_ENT_t *tblent, **otblent; | |
9692 | /* XXX this may be pessimal on platforms where pointers aren't good | |
9693 | * hash values e.g. if they grow faster in the most significant | |
9694 | * bits */ | |
d2a79402 | 9695 | UV hash = PTR2UV(oldv); |
1d7c1841 GS |
9696 | bool i = 1; |
9697 | ||
9698 | assert(tbl); | |
9699 | otblent = &tbl->tbl_ary[hash & tbl->tbl_max]; | |
9700 | for (tblent = *otblent; tblent; i=0, tblent = tblent->next) { | |
9701 | if (tblent->oldval == oldv) { | |
9702 | tblent->newval = newv; | |
1d7c1841 GS |
9703 | return; |
9704 | } | |
9705 | } | |
9706 | Newz(0, tblent, 1, PTR_TBL_ENT_t); | |
9707 | tblent->oldval = oldv; | |
9708 | tblent->newval = newv; | |
9709 | tblent->next = *otblent; | |
9710 | *otblent = tblent; | |
9711 | tbl->tbl_items++; | |
9712 | if (i && tbl->tbl_items > tbl->tbl_max) | |
9713 | ptr_table_split(tbl); | |
9714 | } | |
9715 | ||
645c22ef DM |
9716 | /* double the hash bucket size of an existing ptr table */ |
9717 | ||
1d7c1841 GS |
9718 | void |
9719 | Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl) | |
9720 | { | |
9721 | PTR_TBL_ENT_t **ary = tbl->tbl_ary; | |
9722 | UV oldsize = tbl->tbl_max + 1; | |
9723 | UV newsize = oldsize * 2; | |
9724 | UV i; | |
9725 | ||
9726 | Renew(ary, newsize, PTR_TBL_ENT_t*); | |
9727 | Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*); | |
9728 | tbl->tbl_max = --newsize; | |
9729 | tbl->tbl_ary = ary; | |
9730 | for (i=0; i < oldsize; i++, ary++) { | |
9731 | PTR_TBL_ENT_t **curentp, **entp, *ent; | |
9732 | if (!*ary) | |
9733 | continue; | |
9734 | curentp = ary + oldsize; | |
9735 | for (entp = ary, ent = *ary; ent; ent = *entp) { | |
d2a79402 | 9736 | if ((newsize & PTR2UV(ent->oldval)) != i) { |
1d7c1841 GS |
9737 | *entp = ent->next; |
9738 | ent->next = *curentp; | |
9739 | *curentp = ent; | |
9740 | continue; | |
9741 | } | |
9742 | else | |
9743 | entp = &ent->next; | |
9744 | } | |
9745 | } | |
9746 | } | |
9747 | ||
645c22ef DM |
9748 | /* remove all the entries from a ptr table */ |
9749 | ||
a0739874 DM |
9750 | void |
9751 | Perl_ptr_table_clear(pTHX_ PTR_TBL_t *tbl) | |
9752 | { | |
9753 | register PTR_TBL_ENT_t **array; | |
9754 | register PTR_TBL_ENT_t *entry; | |
9755 | register PTR_TBL_ENT_t *oentry = Null(PTR_TBL_ENT_t*); | |
9756 | UV riter = 0; | |
9757 | UV max; | |
9758 | ||
9759 | if (!tbl || !tbl->tbl_items) { | |
9760 | return; | |
9761 | } | |
9762 | ||
9763 | array = tbl->tbl_ary; | |
9764 | entry = array[0]; | |
9765 | max = tbl->tbl_max; | |
9766 | ||
9767 | for (;;) { | |
9768 | if (entry) { | |
9769 | oentry = entry; | |
9770 | entry = entry->next; | |
9771 | Safefree(oentry); | |
9772 | } | |
9773 | if (!entry) { | |
9774 | if (++riter > max) { | |
9775 | break; | |
9776 | } | |
9777 | entry = array[riter]; | |
9778 | } | |
9779 | } | |
9780 | ||
9781 | tbl->tbl_items = 0; | |
9782 | } | |
9783 | ||
645c22ef DM |
9784 | /* clear and free a ptr table */ |
9785 | ||
a0739874 DM |
9786 | void |
9787 | Perl_ptr_table_free(pTHX_ PTR_TBL_t *tbl) | |
9788 | { | |
9789 | if (!tbl) { | |
9790 | return; | |
9791 | } | |
9792 | ptr_table_clear(tbl); | |
9793 | Safefree(tbl->tbl_ary); | |
9794 | Safefree(tbl); | |
9795 | } | |
9796 | ||
1d7c1841 GS |
9797 | #ifdef DEBUGGING |
9798 | char *PL_watch_pvx; | |
9799 | #endif | |
9800 | ||
645c22ef DM |
9801 | /* attempt to make everything in the typeglob readonly */ |
9802 | ||
5bd07a3d | 9803 | STATIC SV * |
59b40662 | 9804 | S_gv_share(pTHX_ SV *sstr, CLONE_PARAMS *param) |
5bd07a3d DM |
9805 | { |
9806 | GV *gv = (GV*)sstr; | |
59b40662 | 9807 | SV *sv = ¶m->proto_perl->Isv_no; /* just need SvREADONLY-ness */ |
5bd07a3d DM |
9808 | |
9809 | if (GvIO(gv) || GvFORM(gv)) { | |
7fb37951 | 9810 | GvUNIQUE_off(gv); /* GvIOs cannot be shared. nor can GvFORMs */ |
5bd07a3d DM |
9811 | } |
9812 | else if (!GvCV(gv)) { | |
9813 | GvCV(gv) = (CV*)sv; | |
9814 | } | |
9815 | else { | |
9816 | /* CvPADLISTs cannot be shared */ | |
37e20706 | 9817 | if (!SvREADONLY(GvCV(gv)) && !CvXSUB(GvCV(gv))) { |
7fb37951 | 9818 | GvUNIQUE_off(gv); |
5bd07a3d DM |
9819 | } |
9820 | } | |
9821 | ||
7fb37951 | 9822 | if (!GvUNIQUE(gv)) { |
5bd07a3d DM |
9823 | #if 0 |
9824 | PerlIO_printf(Perl_debug_log, "gv_share: unable to share %s::%s\n", | |
9825 | HvNAME(GvSTASH(gv)), GvNAME(gv)); | |
9826 | #endif | |
9827 | return Nullsv; | |
9828 | } | |
9829 | ||
4411f3b6 | 9830 | /* |
5bd07a3d DM |
9831 | * write attempts will die with |
9832 | * "Modification of a read-only value attempted" | |
9833 | */ | |
9834 | if (!GvSV(gv)) { | |
9835 | GvSV(gv) = sv; | |
9836 | } | |
9837 | else { | |
9838 | SvREADONLY_on(GvSV(gv)); | |
9839 | } | |
9840 | ||
9841 | if (!GvAV(gv)) { | |
9842 | GvAV(gv) = (AV*)sv; | |
9843 | } | |
9844 | else { | |
9845 | SvREADONLY_on(GvAV(gv)); | |
9846 | } | |
9847 | ||
9848 | if (!GvHV(gv)) { | |
9849 | GvHV(gv) = (HV*)sv; | |
9850 | } | |
9851 | else { | |
9852 | SvREADONLY_on(GvAV(gv)); | |
9853 | } | |
9854 | ||
9855 | return sstr; /* he_dup() will SvREFCNT_inc() */ | |
9856 | } | |
9857 | ||
645c22ef DM |
9858 | /* duplicate an SV of any type (including AV, HV etc) */ |
9859 | ||
83841fad NIS |
9860 | void |
9861 | Perl_rvpv_dup(pTHX_ SV *dstr, SV *sstr, CLONE_PARAMS* param) | |
9862 | { | |
9863 | if (SvROK(sstr)) { | |
d3d0e6f1 | 9864 | SvRV(dstr) = SvWEAKREF(sstr) |
83841fad NIS |
9865 | ? sv_dup(SvRV(sstr), param) |
9866 | : sv_dup_inc(SvRV(sstr), param); | |
9867 | } | |
9868 | else if (SvPVX(sstr)) { | |
9869 | /* Has something there */ | |
9870 | if (SvLEN(sstr)) { | |
68795e93 | 9871 | /* Normal PV - clone whole allocated space */ |
83841fad | 9872 | SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1); |
d3d0e6f1 NC |
9873 | if (SvREADONLY(sstr) && SvFAKE(sstr)) { |
9874 | /* Not that normal - actually sstr is copy on write. | |
9875 | But we are a true, independant SV, so: */ | |
9876 | SvREADONLY_off(dstr); | |
9877 | SvFAKE_off(dstr); | |
9878 | } | |
68795e93 | 9879 | } |
83841fad NIS |
9880 | else { |
9881 | /* Special case - not normally malloced for some reason */ | |
9882 | if (SvREADONLY(sstr) && SvFAKE(sstr)) { | |
9883 | /* A "shared" PV - clone it as unshared string */ | |
281b2760 | 9884 | if(SvPADTMP(sstr)) { |
5e6160dc AB |
9885 | /* However, some of them live in the pad |
9886 | and they should not have these flags | |
9887 | turned off */ | |
281b2760 AB |
9888 | |
9889 | SvPVX(dstr) = sharepvn(SvPVX(sstr), SvCUR(sstr), | |
9890 | SvUVX(sstr)); | |
9891 | SvUVX(dstr) = SvUVX(sstr); | |
9892 | } else { | |
9893 | ||
9894 | SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvCUR(sstr)); | |
9895 | SvFAKE_off(dstr); | |
9896 | SvREADONLY_off(dstr); | |
5e6160dc | 9897 | } |
83841fad NIS |
9898 | } |
9899 | else { | |
9900 | /* Some other special case - random pointer */ | |
9901 | SvPVX(dstr) = SvPVX(sstr); | |
d3d0e6f1 | 9902 | } |
83841fad NIS |
9903 | } |
9904 | } | |
9905 | else { | |
9906 | /* Copy the Null */ | |
9907 | SvPVX(dstr) = SvPVX(sstr); | |
9908 | } | |
9909 | } | |
9910 | ||
1d7c1841 | 9911 | SV * |
a8fc9800 | 9912 | Perl_sv_dup(pTHX_ SV *sstr, CLONE_PARAMS* param) |
1d7c1841 | 9913 | { |
1d7c1841 GS |
9914 | SV *dstr; |
9915 | ||
9916 | if (!sstr || SvTYPE(sstr) == SVTYPEMASK) | |
9917 | return Nullsv; | |
9918 | /* look for it in the table first */ | |
9919 | dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr); | |
9920 | if (dstr) | |
9921 | return dstr; | |
9922 | ||
0405e91e AB |
9923 | if(param->flags & CLONEf_JOIN_IN) { |
9924 | /** We are joining here so we don't want do clone | |
9925 | something that is bad **/ | |
9926 | ||
9927 | if(SvTYPE(sstr) == SVt_PVHV && | |
9928 | HvNAME(sstr)) { | |
9929 | /** don't clone stashes if they already exist **/ | |
9930 | HV* old_stash = gv_stashpv(HvNAME(sstr),0); | |
9931 | return (SV*) old_stash; | |
9932 | } | |
9933 | } | |
9934 | ||
1d7c1841 GS |
9935 | /* create anew and remember what it is */ |
9936 | new_SV(dstr); | |
9937 | ptr_table_store(PL_ptr_table, sstr, dstr); | |
9938 | ||
9939 | /* clone */ | |
9940 | SvFLAGS(dstr) = SvFLAGS(sstr); | |
9941 | SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */ | |
9942 | SvREFCNT(dstr) = 0; /* must be before any other dups! */ | |
9943 | ||
9944 | #ifdef DEBUGGING | |
9945 | if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx) | |
9946 | PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n", | |
9947 | PL_watch_pvx, SvPVX(sstr)); | |
9948 | #endif | |
9949 | ||
9950 | switch (SvTYPE(sstr)) { | |
9951 | case SVt_NULL: | |
9952 | SvANY(dstr) = NULL; | |
9953 | break; | |
9954 | case SVt_IV: | |
9955 | SvANY(dstr) = new_XIV(); | |
9956 | SvIVX(dstr) = SvIVX(sstr); | |
9957 | break; | |
9958 | case SVt_NV: | |
9959 | SvANY(dstr) = new_XNV(); | |
9960 | SvNVX(dstr) = SvNVX(sstr); | |
9961 | break; | |
9962 | case SVt_RV: | |
9963 | SvANY(dstr) = new_XRV(); | |
83841fad | 9964 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
9965 | break; |
9966 | case SVt_PV: | |
9967 | SvANY(dstr) = new_XPV(); | |
9968 | SvCUR(dstr) = SvCUR(sstr); | |
9969 | SvLEN(dstr) = SvLEN(sstr); | |
83841fad | 9970 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
9971 | break; |
9972 | case SVt_PVIV: | |
9973 | SvANY(dstr) = new_XPVIV(); | |
9974 | SvCUR(dstr) = SvCUR(sstr); | |
9975 | SvLEN(dstr) = SvLEN(sstr); | |
9976 | SvIVX(dstr) = SvIVX(sstr); | |
83841fad | 9977 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
9978 | break; |
9979 | case SVt_PVNV: | |
9980 | SvANY(dstr) = new_XPVNV(); | |
9981 | SvCUR(dstr) = SvCUR(sstr); | |
9982 | SvLEN(dstr) = SvLEN(sstr); | |
9983 | SvIVX(dstr) = SvIVX(sstr); | |
9984 | SvNVX(dstr) = SvNVX(sstr); | |
83841fad | 9985 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
9986 | break; |
9987 | case SVt_PVMG: | |
9988 | SvANY(dstr) = new_XPVMG(); | |
9989 | SvCUR(dstr) = SvCUR(sstr); | |
9990 | SvLEN(dstr) = SvLEN(sstr); | |
9991 | SvIVX(dstr) = SvIVX(sstr); | |
9992 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
9993 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
9994 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 9995 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
9996 | break; |
9997 | case SVt_PVBM: | |
9998 | SvANY(dstr) = new_XPVBM(); | |
9999 | SvCUR(dstr) = SvCUR(sstr); | |
10000 | SvLEN(dstr) = SvLEN(sstr); | |
10001 | SvIVX(dstr) = SvIVX(sstr); | |
10002 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10003 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10004 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10005 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10006 | BmRARE(dstr) = BmRARE(sstr); |
10007 | BmUSEFUL(dstr) = BmUSEFUL(sstr); | |
10008 | BmPREVIOUS(dstr)= BmPREVIOUS(sstr); | |
10009 | break; | |
10010 | case SVt_PVLV: | |
10011 | SvANY(dstr) = new_XPVLV(); | |
10012 | SvCUR(dstr) = SvCUR(sstr); | |
10013 | SvLEN(dstr) = SvLEN(sstr); | |
10014 | SvIVX(dstr) = SvIVX(sstr); | |
10015 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10016 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10017 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10018 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10019 | LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */ |
10020 | LvTARGLEN(dstr) = LvTARGLEN(sstr); | |
dd28f7bb DM |
10021 | if (LvTYPE(sstr) == 't') /* for tie: unrefcnted fake (SV**) */ |
10022 | LvTARG(dstr) = dstr; | |
10023 | else if (LvTYPE(sstr) == 'T') /* for tie: fake HE */ | |
10024 | LvTARG(dstr) = (SV*)he_dup((HE*)LvTARG(sstr), 0, param); | |
10025 | else | |
10026 | LvTARG(dstr) = sv_dup_inc(LvTARG(sstr), param); | |
1d7c1841 GS |
10027 | LvTYPE(dstr) = LvTYPE(sstr); |
10028 | break; | |
10029 | case SVt_PVGV: | |
7fb37951 | 10030 | if (GvUNIQUE((GV*)sstr)) { |
5bd07a3d | 10031 | SV *share; |
59b40662 | 10032 | if ((share = gv_share(sstr, param))) { |
5bd07a3d DM |
10033 | del_SV(dstr); |
10034 | dstr = share; | |
37e20706 | 10035 | ptr_table_store(PL_ptr_table, sstr, dstr); |
5bd07a3d DM |
10036 | #if 0 |
10037 | PerlIO_printf(Perl_debug_log, "sv_dup: sharing %s::%s\n", | |
10038 | HvNAME(GvSTASH(share)), GvNAME(share)); | |
10039 | #endif | |
10040 | break; | |
10041 | } | |
10042 | } | |
1d7c1841 GS |
10043 | SvANY(dstr) = new_XPVGV(); |
10044 | SvCUR(dstr) = SvCUR(sstr); | |
10045 | SvLEN(dstr) = SvLEN(sstr); | |
10046 | SvIVX(dstr) = SvIVX(sstr); | |
10047 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10048 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10049 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10050 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10051 | GvNAMELEN(dstr) = GvNAMELEN(sstr); |
10052 | GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr)); | |
d2d73c3e | 10053 | GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr), param); |
1d7c1841 | 10054 | GvFLAGS(dstr) = GvFLAGS(sstr); |
d2d73c3e | 10055 | GvGP(dstr) = gp_dup(GvGP(sstr), param); |
1d7c1841 GS |
10056 | (void)GpREFCNT_inc(GvGP(dstr)); |
10057 | break; | |
10058 | case SVt_PVIO: | |
10059 | SvANY(dstr) = new_XPVIO(); | |
10060 | SvCUR(dstr) = SvCUR(sstr); | |
10061 | SvLEN(dstr) = SvLEN(sstr); | |
10062 | SvIVX(dstr) = SvIVX(sstr); | |
10063 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10064 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10065 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10066 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
a8fc9800 | 10067 | IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr), param); |
1d7c1841 GS |
10068 | if (IoOFP(sstr) == IoIFP(sstr)) |
10069 | IoOFP(dstr) = IoIFP(dstr); | |
10070 | else | |
a8fc9800 | 10071 | IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr), param); |
1d7c1841 GS |
10072 | /* PL_rsfp_filters entries have fake IoDIRP() */ |
10073 | if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP)) | |
10074 | IoDIRP(dstr) = dirp_dup(IoDIRP(sstr)); | |
10075 | else | |
10076 | IoDIRP(dstr) = IoDIRP(sstr); | |
10077 | IoLINES(dstr) = IoLINES(sstr); | |
10078 | IoPAGE(dstr) = IoPAGE(sstr); | |
10079 | IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr); | |
10080 | IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr); | |
5a37521b AB |
10081 | if(IoFLAGS(sstr) & IOf_FAKE_DIRP) { |
10082 | /* I have no idea why fake dirp (rsfps) | |
10083 | should be treaded differently but otherwise | |
10084 | we end up with leaks -- sky*/ | |
10085 | IoTOP_GV(dstr) = gv_dup_inc(IoTOP_GV(sstr), param); | |
10086 | IoFMT_GV(dstr) = gv_dup_inc(IoFMT_GV(sstr), param); | |
10087 | IoBOTTOM_GV(dstr) = gv_dup_inc(IoBOTTOM_GV(sstr), param); | |
10088 | } else { | |
10089 | IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr), param); | |
10090 | IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr), param); | |
10091 | IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr), param); | |
10092 | } | |
1d7c1841 | 10093 | IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr)); |
1d7c1841 | 10094 | IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr)); |
1d7c1841 | 10095 | IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr)); |
1d7c1841 GS |
10096 | IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr); |
10097 | IoTYPE(dstr) = IoTYPE(sstr); | |
10098 | IoFLAGS(dstr) = IoFLAGS(sstr); | |
10099 | break; | |
10100 | case SVt_PVAV: | |
10101 | SvANY(dstr) = new_XPVAV(); | |
10102 | SvCUR(dstr) = SvCUR(sstr); | |
10103 | SvLEN(dstr) = SvLEN(sstr); | |
10104 | SvIVX(dstr) = SvIVX(sstr); | |
10105 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10106 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10107 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
10108 | AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr), param); | |
1d7c1841 GS |
10109 | AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr); |
10110 | if (AvARRAY((AV*)sstr)) { | |
10111 | SV **dst_ary, **src_ary; | |
10112 | SSize_t items = AvFILLp((AV*)sstr) + 1; | |
10113 | ||
10114 | src_ary = AvARRAY((AV*)sstr); | |
10115 | Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*); | |
10116 | ptr_table_store(PL_ptr_table, src_ary, dst_ary); | |
10117 | SvPVX(dstr) = (char*)dst_ary; | |
10118 | AvALLOC((AV*)dstr) = dst_ary; | |
10119 | if (AvREAL((AV*)sstr)) { | |
10120 | while (items-- > 0) | |
d2d73c3e | 10121 | *dst_ary++ = sv_dup_inc(*src_ary++, param); |
1d7c1841 GS |
10122 | } |
10123 | else { | |
10124 | while (items-- > 0) | |
d2d73c3e | 10125 | *dst_ary++ = sv_dup(*src_ary++, param); |
1d7c1841 GS |
10126 | } |
10127 | items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr); | |
10128 | while (items-- > 0) { | |
10129 | *dst_ary++ = &PL_sv_undef; | |
10130 | } | |
10131 | } | |
10132 | else { | |
10133 | SvPVX(dstr) = Nullch; | |
10134 | AvALLOC((AV*)dstr) = (SV**)NULL; | |
10135 | } | |
10136 | break; | |
10137 | case SVt_PVHV: | |
10138 | SvANY(dstr) = new_XPVHV(); | |
10139 | SvCUR(dstr) = SvCUR(sstr); | |
10140 | SvLEN(dstr) = SvLEN(sstr); | |
10141 | SvIVX(dstr) = SvIVX(sstr); | |
10142 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10143 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10144 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
1d7c1841 GS |
10145 | HvRITER((HV*)dstr) = HvRITER((HV*)sstr); |
10146 | if (HvARRAY((HV*)sstr)) { | |
1d7c1841 GS |
10147 | STRLEN i = 0; |
10148 | XPVHV *dxhv = (XPVHV*)SvANY(dstr); | |
10149 | XPVHV *sxhv = (XPVHV*)SvANY(sstr); | |
10150 | Newz(0, dxhv->xhv_array, | |
10151 | PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char); | |
10152 | while (i <= sxhv->xhv_max) { | |
10153 | ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i], | |
eb160463 GS |
10154 | (bool)!!HvSHAREKEYS(sstr), |
10155 | param); | |
1d7c1841 GS |
10156 | ++i; |
10157 | } | |
eb160463 GS |
10158 | dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, |
10159 | (bool)!!HvSHAREKEYS(sstr), param); | |
1d7c1841 GS |
10160 | } |
10161 | else { | |
10162 | SvPVX(dstr) = Nullch; | |
10163 | HvEITER((HV*)dstr) = (HE*)NULL; | |
10164 | } | |
10165 | HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */ | |
10166 | HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr)); | |
c43294b8 | 10167 | /* Record stashes for possible cloning in Perl_clone(). */ |
6676db26 | 10168 | if(HvNAME((HV*)dstr)) |
d2d73c3e | 10169 | av_push(param->stashes, dstr); |
1d7c1841 GS |
10170 | break; |
10171 | case SVt_PVFM: | |
10172 | SvANY(dstr) = new_XPVFM(); | |
10173 | FmLINES(dstr) = FmLINES(sstr); | |
10174 | goto dup_pvcv; | |
10175 | /* NOTREACHED */ | |
10176 | case SVt_PVCV: | |
10177 | SvANY(dstr) = new_XPVCV(); | |
d2d73c3e | 10178 | dup_pvcv: |
1d7c1841 GS |
10179 | SvCUR(dstr) = SvCUR(sstr); |
10180 | SvLEN(dstr) = SvLEN(sstr); | |
10181 | SvIVX(dstr) = SvIVX(sstr); | |
10182 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10183 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10184 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10185 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
d2d73c3e | 10186 | CvSTASH(dstr) = hv_dup(CvSTASH(sstr), param); /* NOTE: not refcounted */ |
1d7c1841 GS |
10187 | CvSTART(dstr) = CvSTART(sstr); |
10188 | CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr)); | |
10189 | CvXSUB(dstr) = CvXSUB(sstr); | |
10190 | CvXSUBANY(dstr) = CvXSUBANY(sstr); | |
01485f8b DM |
10191 | if (CvCONST(sstr)) { |
10192 | CvXSUBANY(dstr).any_ptr = GvUNIQUE(CvGV(sstr)) ? | |
10193 | SvREFCNT_inc(CvXSUBANY(sstr).any_ptr) : | |
10194 | sv_dup_inc(CvXSUBANY(sstr).any_ptr, param); | |
10195 | } | |
d2d73c3e AB |
10196 | CvGV(dstr) = gv_dup(CvGV(sstr), param); |
10197 | if (param->flags & CLONEf_COPY_STACKS) { | |
10198 | CvDEPTH(dstr) = CvDEPTH(sstr); | |
10199 | } else { | |
10200 | CvDEPTH(dstr) = 0; | |
10201 | } | |
dd2155a4 | 10202 | PAD_DUP(CvPADLIST(dstr), CvPADLIST(sstr), param); |
7dafbf52 DM |
10203 | CvOUTSIDE_SEQ(dstr) = CvOUTSIDE_SEQ(sstr); |
10204 | CvOUTSIDE(dstr) = | |
10205 | CvWEAKOUTSIDE(sstr) | |
10206 | ? cv_dup( CvOUTSIDE(sstr), param) | |
10207 | : cv_dup_inc(CvOUTSIDE(sstr), param); | |
1d7c1841 | 10208 | CvFLAGS(dstr) = CvFLAGS(sstr); |
54356c7d | 10209 | CvFILE(dstr) = CvXSUB(sstr) ? CvFILE(sstr) : SAVEPV(CvFILE(sstr)); |
1d7c1841 GS |
10210 | break; |
10211 | default: | |
c803eecc | 10212 | Perl_croak(aTHX_ "Bizarre SvTYPE [%" IVdf "]", (IV)SvTYPE(sstr)); |
1d7c1841 GS |
10213 | break; |
10214 | } | |
10215 | ||
10216 | if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO) | |
10217 | ++PL_sv_objcount; | |
10218 | ||
10219 | return dstr; | |
d2d73c3e | 10220 | } |
1d7c1841 | 10221 | |
645c22ef DM |
10222 | /* duplicate a context */ |
10223 | ||
1d7c1841 | 10224 | PERL_CONTEXT * |
a8fc9800 | 10225 | Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max, CLONE_PARAMS* param) |
1d7c1841 GS |
10226 | { |
10227 | PERL_CONTEXT *ncxs; | |
10228 | ||
10229 | if (!cxs) | |
10230 | return (PERL_CONTEXT*)NULL; | |
10231 | ||
10232 | /* look for it in the table first */ | |
10233 | ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs); | |
10234 | if (ncxs) | |
10235 | return ncxs; | |
10236 | ||
10237 | /* create anew and remember what it is */ | |
10238 | Newz(56, ncxs, max + 1, PERL_CONTEXT); | |
10239 | ptr_table_store(PL_ptr_table, cxs, ncxs); | |
10240 | ||
10241 | while (ix >= 0) { | |
10242 | PERL_CONTEXT *cx = &cxs[ix]; | |
10243 | PERL_CONTEXT *ncx = &ncxs[ix]; | |
10244 | ncx->cx_type = cx->cx_type; | |
10245 | if (CxTYPE(cx) == CXt_SUBST) { | |
10246 | Perl_croak(aTHX_ "Cloning substitution context is unimplemented"); | |
10247 | } | |
10248 | else { | |
10249 | ncx->blk_oldsp = cx->blk_oldsp; | |
10250 | ncx->blk_oldcop = cx->blk_oldcop; | |
10251 | ncx->blk_oldretsp = cx->blk_oldretsp; | |
10252 | ncx->blk_oldmarksp = cx->blk_oldmarksp; | |
10253 | ncx->blk_oldscopesp = cx->blk_oldscopesp; | |
10254 | ncx->blk_oldpm = cx->blk_oldpm; | |
10255 | ncx->blk_gimme = cx->blk_gimme; | |
10256 | switch (CxTYPE(cx)) { | |
10257 | case CXt_SUB: | |
10258 | ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0 | |
d2d73c3e AB |
10259 | ? cv_dup_inc(cx->blk_sub.cv, param) |
10260 | : cv_dup(cx->blk_sub.cv,param)); | |
1d7c1841 | 10261 | ncx->blk_sub.argarray = (cx->blk_sub.hasargs |
d2d73c3e | 10262 | ? av_dup_inc(cx->blk_sub.argarray, param) |
1d7c1841 | 10263 | : Nullav); |
d2d73c3e | 10264 | ncx->blk_sub.savearray = av_dup_inc(cx->blk_sub.savearray, param); |
1d7c1841 GS |
10265 | ncx->blk_sub.olddepth = cx->blk_sub.olddepth; |
10266 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; | |
10267 | ncx->blk_sub.lval = cx->blk_sub.lval; | |
10268 | break; | |
10269 | case CXt_EVAL: | |
10270 | ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval; | |
10271 | ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type; | |
b47cad08 | 10272 | ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv, param); |
1d7c1841 | 10273 | ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root; |
d2d73c3e | 10274 | ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text, param); |
1d7c1841 GS |
10275 | break; |
10276 | case CXt_LOOP: | |
10277 | ncx->blk_loop.label = cx->blk_loop.label; | |
10278 | ncx->blk_loop.resetsp = cx->blk_loop.resetsp; | |
10279 | ncx->blk_loop.redo_op = cx->blk_loop.redo_op; | |
10280 | ncx->blk_loop.next_op = cx->blk_loop.next_op; | |
10281 | ncx->blk_loop.last_op = cx->blk_loop.last_op; | |
10282 | ncx->blk_loop.iterdata = (CxPADLOOP(cx) | |
10283 | ? cx->blk_loop.iterdata | |
d2d73c3e | 10284 | : gv_dup((GV*)cx->blk_loop.iterdata, param)); |
f3548bdc DM |
10285 | ncx->blk_loop.oldcomppad |
10286 | = (PAD*)ptr_table_fetch(PL_ptr_table, | |
10287 | cx->blk_loop.oldcomppad); | |
d2d73c3e AB |
10288 | ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave, param); |
10289 | ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval, param); | |
10290 | ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary, param); | |
1d7c1841 GS |
10291 | ncx->blk_loop.iterix = cx->blk_loop.iterix; |
10292 | ncx->blk_loop.itermax = cx->blk_loop.itermax; | |
10293 | break; | |
10294 | case CXt_FORMAT: | |
d2d73c3e AB |
10295 | ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv, param); |
10296 | ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv, param); | |
10297 | ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv, param); | |
1d7c1841 GS |
10298 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; |
10299 | break; | |
10300 | case CXt_BLOCK: | |
10301 | case CXt_NULL: | |
10302 | break; | |
10303 | } | |
10304 | } | |
10305 | --ix; | |
10306 | } | |
10307 | return ncxs; | |
10308 | } | |
10309 | ||
645c22ef DM |
10310 | /* duplicate a stack info structure */ |
10311 | ||
1d7c1841 | 10312 | PERL_SI * |
a8fc9800 | 10313 | Perl_si_dup(pTHX_ PERL_SI *si, CLONE_PARAMS* param) |
1d7c1841 GS |
10314 | { |
10315 | PERL_SI *nsi; | |
10316 | ||
10317 | if (!si) | |
10318 | return (PERL_SI*)NULL; | |
10319 | ||
10320 | /* look for it in the table first */ | |
10321 | nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si); | |
10322 | if (nsi) | |
10323 | return nsi; | |
10324 | ||
10325 | /* create anew and remember what it is */ | |
10326 | Newz(56, nsi, 1, PERL_SI); | |
10327 | ptr_table_store(PL_ptr_table, si, nsi); | |
10328 | ||
d2d73c3e | 10329 | nsi->si_stack = av_dup_inc(si->si_stack, param); |
1d7c1841 GS |
10330 | nsi->si_cxix = si->si_cxix; |
10331 | nsi->si_cxmax = si->si_cxmax; | |
d2d73c3e | 10332 | nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax, param); |
1d7c1841 | 10333 | nsi->si_type = si->si_type; |
d2d73c3e AB |
10334 | nsi->si_prev = si_dup(si->si_prev, param); |
10335 | nsi->si_next = si_dup(si->si_next, param); | |
1d7c1841 GS |
10336 | nsi->si_markoff = si->si_markoff; |
10337 | ||
10338 | return nsi; | |
10339 | } | |
10340 | ||
10341 | #define POPINT(ss,ix) ((ss)[--(ix)].any_i32) | |
10342 | #define TOPINT(ss,ix) ((ss)[ix].any_i32) | |
10343 | #define POPLONG(ss,ix) ((ss)[--(ix)].any_long) | |
10344 | #define TOPLONG(ss,ix) ((ss)[ix].any_long) | |
10345 | #define POPIV(ss,ix) ((ss)[--(ix)].any_iv) | |
10346 | #define TOPIV(ss,ix) ((ss)[ix].any_iv) | |
38d8b13e HS |
10347 | #define POPBOOL(ss,ix) ((ss)[--(ix)].any_bool) |
10348 | #define TOPBOOL(ss,ix) ((ss)[ix].any_bool) | |
1d7c1841 GS |
10349 | #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr) |
10350 | #define TOPPTR(ss,ix) ((ss)[ix].any_ptr) | |
10351 | #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr) | |
10352 | #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr) | |
10353 | #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr) | |
10354 | #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr) | |
10355 | ||
10356 | /* XXXXX todo */ | |
10357 | #define pv_dup_inc(p) SAVEPV(p) | |
10358 | #define pv_dup(p) SAVEPV(p) | |
10359 | #define svp_dup_inc(p,pp) any_dup(p,pp) | |
10360 | ||
645c22ef DM |
10361 | /* map any object to the new equivent - either something in the |
10362 | * ptr table, or something in the interpreter structure | |
10363 | */ | |
10364 | ||
1d7c1841 GS |
10365 | void * |
10366 | Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl) | |
10367 | { | |
10368 | void *ret; | |
10369 | ||
10370 | if (!v) | |
10371 | return (void*)NULL; | |
10372 | ||
10373 | /* look for it in the table first */ | |
10374 | ret = ptr_table_fetch(PL_ptr_table, v); | |
10375 | if (ret) | |
10376 | return ret; | |
10377 | ||
10378 | /* see if it is part of the interpreter structure */ | |
10379 | if (v >= (void*)proto_perl && v < (void*)(proto_perl+1)) | |
acfe0abc | 10380 | ret = (void*)(((char*)aTHX) + (((char*)v) - (char*)proto_perl)); |
05ec9bb3 | 10381 | else { |
1d7c1841 | 10382 | ret = v; |
05ec9bb3 | 10383 | } |
1d7c1841 GS |
10384 | |
10385 | return ret; | |
10386 | } | |
10387 | ||
645c22ef DM |
10388 | /* duplicate the save stack */ |
10389 | ||
1d7c1841 | 10390 | ANY * |
a8fc9800 | 10391 | Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl, CLONE_PARAMS* param) |
1d7c1841 GS |
10392 | { |
10393 | ANY *ss = proto_perl->Tsavestack; | |
10394 | I32 ix = proto_perl->Tsavestack_ix; | |
10395 | I32 max = proto_perl->Tsavestack_max; | |
10396 | ANY *nss; | |
10397 | SV *sv; | |
10398 | GV *gv; | |
10399 | AV *av; | |
10400 | HV *hv; | |
10401 | void* ptr; | |
10402 | int intval; | |
10403 | long longval; | |
10404 | GP *gp; | |
10405 | IV iv; | |
10406 | I32 i; | |
c4e33207 | 10407 | char *c = NULL; |
1d7c1841 | 10408 | void (*dptr) (void*); |
acfe0abc | 10409 | void (*dxptr) (pTHX_ void*); |
e977893f | 10410 | OP *o; |
1d7c1841 GS |
10411 | |
10412 | Newz(54, nss, max, ANY); | |
10413 | ||
10414 | while (ix > 0) { | |
10415 | i = POPINT(ss,ix); | |
10416 | TOPINT(nss,ix) = i; | |
10417 | switch (i) { | |
10418 | case SAVEt_ITEM: /* normal string */ | |
10419 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10420 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 10421 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 10422 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
10423 | break; |
10424 | case SAVEt_SV: /* scalar reference */ | |
10425 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10426 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 10427 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 10428 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 | 10429 | break; |
f4dd75d9 GS |
10430 | case SAVEt_GENERIC_PVREF: /* generic char* */ |
10431 | c = (char*)POPPTR(ss,ix); | |
10432 | TOPPTR(nss,ix) = pv_dup(c); | |
10433 | ptr = POPPTR(ss,ix); | |
10434 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10435 | break; | |
05ec9bb3 NIS |
10436 | case SAVEt_SHARED_PVREF: /* char* in shared space */ |
10437 | c = (char*)POPPTR(ss,ix); | |
10438 | TOPPTR(nss,ix) = savesharedpv(c); | |
10439 | ptr = POPPTR(ss,ix); | |
10440 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10441 | break; | |
1d7c1841 GS |
10442 | case SAVEt_GENERIC_SVREF: /* generic sv */ |
10443 | case SAVEt_SVREF: /* scalar reference */ | |
10444 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10445 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
10446 | ptr = POPPTR(ss,ix); |
10447 | TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */ | |
10448 | break; | |
10449 | case SAVEt_AV: /* array reference */ | |
10450 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 10451 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 | 10452 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 10453 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
10454 | break; |
10455 | case SAVEt_HV: /* hash reference */ | |
10456 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 10457 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 | 10458 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 10459 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
10460 | break; |
10461 | case SAVEt_INT: /* int reference */ | |
10462 | ptr = POPPTR(ss,ix); | |
10463 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10464 | intval = (int)POPINT(ss,ix); | |
10465 | TOPINT(nss,ix) = intval; | |
10466 | break; | |
10467 | case SAVEt_LONG: /* long reference */ | |
10468 | ptr = POPPTR(ss,ix); | |
10469 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10470 | longval = (long)POPLONG(ss,ix); | |
10471 | TOPLONG(nss,ix) = longval; | |
10472 | break; | |
10473 | case SAVEt_I32: /* I32 reference */ | |
10474 | case SAVEt_I16: /* I16 reference */ | |
10475 | case SAVEt_I8: /* I8 reference */ | |
10476 | ptr = POPPTR(ss,ix); | |
10477 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10478 | i = POPINT(ss,ix); | |
10479 | TOPINT(nss,ix) = i; | |
10480 | break; | |
10481 | case SAVEt_IV: /* IV reference */ | |
10482 | ptr = POPPTR(ss,ix); | |
10483 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10484 | iv = POPIV(ss,ix); | |
10485 | TOPIV(nss,ix) = iv; | |
10486 | break; | |
10487 | case SAVEt_SPTR: /* SV* reference */ | |
10488 | ptr = POPPTR(ss,ix); | |
10489 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10490 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10491 | TOPPTR(nss,ix) = sv_dup(sv, param); |
1d7c1841 GS |
10492 | break; |
10493 | case SAVEt_VPTR: /* random* reference */ | |
10494 | ptr = POPPTR(ss,ix); | |
10495 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10496 | ptr = POPPTR(ss,ix); | |
10497 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10498 | break; | |
10499 | case SAVEt_PPTR: /* char* reference */ | |
10500 | ptr = POPPTR(ss,ix); | |
10501 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10502 | c = (char*)POPPTR(ss,ix); | |
10503 | TOPPTR(nss,ix) = pv_dup(c); | |
10504 | break; | |
10505 | case SAVEt_HPTR: /* HV* reference */ | |
10506 | ptr = POPPTR(ss,ix); | |
10507 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10508 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 10509 | TOPPTR(nss,ix) = hv_dup(hv, param); |
1d7c1841 GS |
10510 | break; |
10511 | case SAVEt_APTR: /* AV* reference */ | |
10512 | ptr = POPPTR(ss,ix); | |
10513 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10514 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 10515 | TOPPTR(nss,ix) = av_dup(av, param); |
1d7c1841 GS |
10516 | break; |
10517 | case SAVEt_NSTAB: | |
10518 | gv = (GV*)POPPTR(ss,ix); | |
d2d73c3e | 10519 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
10520 | break; |
10521 | case SAVEt_GP: /* scalar reference */ | |
10522 | gp = (GP*)POPPTR(ss,ix); | |
d2d73c3e | 10523 | TOPPTR(nss,ix) = gp = gp_dup(gp, param); |
1d7c1841 GS |
10524 | (void)GpREFCNT_inc(gp); |
10525 | gv = (GV*)POPPTR(ss,ix); | |
2ed3c8fc | 10526 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 GS |
10527 | c = (char*)POPPTR(ss,ix); |
10528 | TOPPTR(nss,ix) = pv_dup(c); | |
10529 | iv = POPIV(ss,ix); | |
10530 | TOPIV(nss,ix) = iv; | |
10531 | iv = POPIV(ss,ix); | |
10532 | TOPIV(nss,ix) = iv; | |
10533 | break; | |
10534 | case SAVEt_FREESV: | |
26d9b02f | 10535 | case SAVEt_MORTALIZESV: |
1d7c1841 | 10536 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 10537 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
10538 | break; |
10539 | case SAVEt_FREEOP: | |
10540 | ptr = POPPTR(ss,ix); | |
10541 | if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) { | |
10542 | /* these are assumed to be refcounted properly */ | |
10543 | switch (((OP*)ptr)->op_type) { | |
10544 | case OP_LEAVESUB: | |
10545 | case OP_LEAVESUBLV: | |
10546 | case OP_LEAVEEVAL: | |
10547 | case OP_LEAVE: | |
10548 | case OP_SCOPE: | |
10549 | case OP_LEAVEWRITE: | |
e977893f GS |
10550 | TOPPTR(nss,ix) = ptr; |
10551 | o = (OP*)ptr; | |
10552 | OpREFCNT_inc(o); | |
1d7c1841 GS |
10553 | break; |
10554 | default: | |
10555 | TOPPTR(nss,ix) = Nullop; | |
10556 | break; | |
10557 | } | |
10558 | } | |
10559 | else | |
10560 | TOPPTR(nss,ix) = Nullop; | |
10561 | break; | |
10562 | case SAVEt_FREEPV: | |
10563 | c = (char*)POPPTR(ss,ix); | |
10564 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
10565 | break; | |
10566 | case SAVEt_CLEARSV: | |
10567 | longval = POPLONG(ss,ix); | |
10568 | TOPLONG(nss,ix) = longval; | |
10569 | break; | |
10570 | case SAVEt_DELETE: | |
10571 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 10572 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
10573 | c = (char*)POPPTR(ss,ix); |
10574 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
10575 | i = POPINT(ss,ix); | |
10576 | TOPINT(nss,ix) = i; | |
10577 | break; | |
10578 | case SAVEt_DESTRUCTOR: | |
10579 | ptr = POPPTR(ss,ix); | |
10580 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
10581 | dptr = POPDPTR(ss,ix); | |
ef75a179 | 10582 | TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl); |
1d7c1841 GS |
10583 | break; |
10584 | case SAVEt_DESTRUCTOR_X: | |
10585 | ptr = POPPTR(ss,ix); | |
10586 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
10587 | dxptr = POPDXPTR(ss,ix); | |
acfe0abc | 10588 | TOPDXPTR(nss,ix) = (void (*)(pTHX_ void*))any_dup((void *)dxptr, proto_perl); |
1d7c1841 GS |
10589 | break; |
10590 | case SAVEt_REGCONTEXT: | |
10591 | case SAVEt_ALLOC: | |
10592 | i = POPINT(ss,ix); | |
10593 | TOPINT(nss,ix) = i; | |
10594 | ix -= i; | |
10595 | break; | |
10596 | case SAVEt_STACK_POS: /* Position on Perl stack */ | |
10597 | i = POPINT(ss,ix); | |
10598 | TOPINT(nss,ix) = i; | |
10599 | break; | |
10600 | case SAVEt_AELEM: /* array element */ | |
10601 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10602 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
10603 | i = POPINT(ss,ix); |
10604 | TOPINT(nss,ix) = i; | |
10605 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 10606 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 GS |
10607 | break; |
10608 | case SAVEt_HELEM: /* hash element */ | |
10609 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10610 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 10611 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 10612 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 10613 | hv = (HV*)POPPTR(ss,ix); |
d2d73c3e | 10614 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
10615 | break; |
10616 | case SAVEt_OP: | |
10617 | ptr = POPPTR(ss,ix); | |
10618 | TOPPTR(nss,ix) = ptr; | |
10619 | break; | |
10620 | case SAVEt_HINTS: | |
10621 | i = POPINT(ss,ix); | |
10622 | TOPINT(nss,ix) = i; | |
10623 | break; | |
c4410b1b GS |
10624 | case SAVEt_COMPPAD: |
10625 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 10626 | TOPPTR(nss,ix) = av_dup(av, param); |
c4410b1b | 10627 | break; |
c3564e5c GS |
10628 | case SAVEt_PADSV: |
10629 | longval = (long)POPLONG(ss,ix); | |
10630 | TOPLONG(nss,ix) = longval; | |
10631 | ptr = POPPTR(ss,ix); | |
10632 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10633 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10634 | TOPPTR(nss,ix) = sv_dup(sv, param); |
c3564e5c | 10635 | break; |
a1bb4754 | 10636 | case SAVEt_BOOL: |
38d8b13e | 10637 | ptr = POPPTR(ss,ix); |
b9609c01 | 10638 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); |
38d8b13e | 10639 | longval = (long)POPBOOL(ss,ix); |
b9609c01 | 10640 | TOPBOOL(nss,ix) = (bool)longval; |
a1bb4754 | 10641 | break; |
1d7c1841 GS |
10642 | default: |
10643 | Perl_croak(aTHX_ "panic: ss_dup inconsistency"); | |
10644 | } | |
10645 | } | |
10646 | ||
10647 | return nss; | |
10648 | } | |
10649 | ||
645c22ef DM |
10650 | /* |
10651 | =for apidoc perl_clone | |
10652 | ||
10653 | Create and return a new interpreter by cloning the current one. | |
10654 | ||
6a78b4db AB |
10655 | perl_clone takes these flags as paramters: |
10656 | ||
10657 | CLONEf_COPY_STACKS - is used to, well, copy the stacks also, | |
10658 | without it we only clone the data and zero the stacks, | |
10659 | with it we copy the stacks and the new perl interpreter is | |
10660 | ready to run at the exact same point as the previous one. | |
10661 | The pseudo-fork code uses COPY_STACKS while the | |
10662 | threads->new doesn't. | |
10663 | ||
10664 | CLONEf_KEEP_PTR_TABLE | |
10665 | perl_clone keeps a ptr_table with the pointer of the old | |
10666 | variable as a key and the new variable as a value, | |
10667 | this allows it to check if something has been cloned and not | |
10668 | clone it again but rather just use the value and increase the | |
10669 | refcount. If KEEP_PTR_TABLE is not set then perl_clone will kill | |
10670 | the ptr_table using the function | |
10671 | C<ptr_table_free(PL_ptr_table); PL_ptr_table = NULL;>, | |
10672 | reason to keep it around is if you want to dup some of your own | |
10673 | variable who are outside the graph perl scans, example of this | |
10674 | code is in threads.xs create | |
10675 | ||
10676 | CLONEf_CLONE_HOST | |
10677 | This is a win32 thing, it is ignored on unix, it tells perls | |
10678 | win32host code (which is c++) to clone itself, this is needed on | |
10679 | win32 if you want to run two threads at the same time, | |
10680 | if you just want to do some stuff in a separate perl interpreter | |
10681 | and then throw it away and return to the original one, | |
10682 | you don't need to do anything. | |
10683 | ||
645c22ef DM |
10684 | =cut |
10685 | */ | |
10686 | ||
10687 | /* XXX the above needs expanding by someone who actually understands it ! */ | |
3fc56081 NK |
10688 | EXTERN_C PerlInterpreter * |
10689 | perl_clone_host(PerlInterpreter* proto_perl, UV flags); | |
645c22ef | 10690 | |
1d7c1841 GS |
10691 | PerlInterpreter * |
10692 | perl_clone(PerlInterpreter *proto_perl, UV flags) | |
10693 | { | |
1d7c1841 | 10694 | #ifdef PERL_IMPLICIT_SYS |
c43294b8 AB |
10695 | |
10696 | /* perlhost.h so we need to call into it | |
10697 | to clone the host, CPerlHost should have a c interface, sky */ | |
10698 | ||
10699 | if (flags & CLONEf_CLONE_HOST) { | |
10700 | return perl_clone_host(proto_perl,flags); | |
10701 | } | |
10702 | return perl_clone_using(proto_perl, flags, | |
1d7c1841 GS |
10703 | proto_perl->IMem, |
10704 | proto_perl->IMemShared, | |
10705 | proto_perl->IMemParse, | |
10706 | proto_perl->IEnv, | |
10707 | proto_perl->IStdIO, | |
10708 | proto_perl->ILIO, | |
10709 | proto_perl->IDir, | |
10710 | proto_perl->ISock, | |
10711 | proto_perl->IProc); | |
10712 | } | |
10713 | ||
10714 | PerlInterpreter * | |
10715 | perl_clone_using(PerlInterpreter *proto_perl, UV flags, | |
10716 | struct IPerlMem* ipM, struct IPerlMem* ipMS, | |
10717 | struct IPerlMem* ipMP, struct IPerlEnv* ipE, | |
10718 | struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO, | |
10719 | struct IPerlDir* ipD, struct IPerlSock* ipS, | |
10720 | struct IPerlProc* ipP) | |
10721 | { | |
10722 | /* XXX many of the string copies here can be optimized if they're | |
10723 | * constants; they need to be allocated as common memory and just | |
10724 | * their pointers copied. */ | |
10725 | ||
10726 | IV i; | |
64aa0685 GS |
10727 | CLONE_PARAMS clone_params; |
10728 | CLONE_PARAMS* param = &clone_params; | |
d2d73c3e | 10729 | |
1d7c1841 | 10730 | PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter)); |
ba869deb | 10731 | PERL_SET_THX(my_perl); |
1d7c1841 | 10732 | |
acfe0abc | 10733 | # ifdef DEBUGGING |
a4530404 | 10734 | Poison(my_perl, 1, PerlInterpreter); |
1d7c1841 GS |
10735 | PL_markstack = 0; |
10736 | PL_scopestack = 0; | |
10737 | PL_savestack = 0; | |
10738 | PL_retstack = 0; | |
66fe0623 | 10739 | PL_sig_pending = 0; |
25596c82 | 10740 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); |
acfe0abc | 10741 | # else /* !DEBUGGING */ |
1d7c1841 | 10742 | Zero(my_perl, 1, PerlInterpreter); |
acfe0abc | 10743 | # endif /* DEBUGGING */ |
1d7c1841 GS |
10744 | |
10745 | /* host pointers */ | |
10746 | PL_Mem = ipM; | |
10747 | PL_MemShared = ipMS; | |
10748 | PL_MemParse = ipMP; | |
10749 | PL_Env = ipE; | |
10750 | PL_StdIO = ipStd; | |
10751 | PL_LIO = ipLIO; | |
10752 | PL_Dir = ipD; | |
10753 | PL_Sock = ipS; | |
10754 | PL_Proc = ipP; | |
1d7c1841 GS |
10755 | #else /* !PERL_IMPLICIT_SYS */ |
10756 | IV i; | |
64aa0685 GS |
10757 | CLONE_PARAMS clone_params; |
10758 | CLONE_PARAMS* param = &clone_params; | |
1d7c1841 | 10759 | PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter)); |
ba869deb | 10760 | PERL_SET_THX(my_perl); |
1d7c1841 | 10761 | |
d2d73c3e AB |
10762 | |
10763 | ||
1d7c1841 | 10764 | # ifdef DEBUGGING |
a4530404 | 10765 | Poison(my_perl, 1, PerlInterpreter); |
1d7c1841 GS |
10766 | PL_markstack = 0; |
10767 | PL_scopestack = 0; | |
10768 | PL_savestack = 0; | |
10769 | PL_retstack = 0; | |
66fe0623 | 10770 | PL_sig_pending = 0; |
25596c82 | 10771 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); |
1d7c1841 GS |
10772 | # else /* !DEBUGGING */ |
10773 | Zero(my_perl, 1, PerlInterpreter); | |
10774 | # endif /* DEBUGGING */ | |
10775 | #endif /* PERL_IMPLICIT_SYS */ | |
83236556 | 10776 | param->flags = flags; |
59b40662 | 10777 | param->proto_perl = proto_perl; |
1d7c1841 GS |
10778 | |
10779 | /* arena roots */ | |
10780 | PL_xiv_arenaroot = NULL; | |
10781 | PL_xiv_root = NULL; | |
612f20c3 | 10782 | PL_xnv_arenaroot = NULL; |
1d7c1841 | 10783 | PL_xnv_root = NULL; |
612f20c3 | 10784 | PL_xrv_arenaroot = NULL; |
1d7c1841 | 10785 | PL_xrv_root = NULL; |
612f20c3 | 10786 | PL_xpv_arenaroot = NULL; |
1d7c1841 | 10787 | PL_xpv_root = NULL; |
612f20c3 | 10788 | PL_xpviv_arenaroot = NULL; |
1d7c1841 | 10789 | PL_xpviv_root = NULL; |
612f20c3 | 10790 | PL_xpvnv_arenaroot = NULL; |
1d7c1841 | 10791 | PL_xpvnv_root = NULL; |
612f20c3 | 10792 | PL_xpvcv_arenaroot = NULL; |
1d7c1841 | 10793 | PL_xpvcv_root = NULL; |
612f20c3 | 10794 | PL_xpvav_arenaroot = NULL; |
1d7c1841 | 10795 | PL_xpvav_root = NULL; |
612f20c3 | 10796 | PL_xpvhv_arenaroot = NULL; |
1d7c1841 | 10797 | PL_xpvhv_root = NULL; |
612f20c3 | 10798 | PL_xpvmg_arenaroot = NULL; |
1d7c1841 | 10799 | PL_xpvmg_root = NULL; |
612f20c3 | 10800 | PL_xpvlv_arenaroot = NULL; |
1d7c1841 | 10801 | PL_xpvlv_root = NULL; |
612f20c3 | 10802 | PL_xpvbm_arenaroot = NULL; |
1d7c1841 | 10803 | PL_xpvbm_root = NULL; |
612f20c3 | 10804 | PL_he_arenaroot = NULL; |
1d7c1841 GS |
10805 | PL_he_root = NULL; |
10806 | PL_nice_chunk = NULL; | |
10807 | PL_nice_chunk_size = 0; | |
10808 | PL_sv_count = 0; | |
10809 | PL_sv_objcount = 0; | |
10810 | PL_sv_root = Nullsv; | |
10811 | PL_sv_arenaroot = Nullsv; | |
10812 | ||
10813 | PL_debug = proto_perl->Idebug; | |
10814 | ||
e5dd39fc | 10815 | #ifdef USE_REENTRANT_API |
59bd0823 | 10816 | Perl_reentrant_init(aTHX); |
e5dd39fc AB |
10817 | #endif |
10818 | ||
1d7c1841 GS |
10819 | /* create SV map for pointer relocation */ |
10820 | PL_ptr_table = ptr_table_new(); | |
10821 | ||
10822 | /* initialize these special pointers as early as possible */ | |
10823 | SvANY(&PL_sv_undef) = NULL; | |
10824 | SvREFCNT(&PL_sv_undef) = (~(U32)0)/2; | |
10825 | SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL; | |
10826 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef); | |
10827 | ||
1d7c1841 | 10828 | SvANY(&PL_sv_no) = new_XPVNV(); |
1d7c1841 GS |
10829 | SvREFCNT(&PL_sv_no) = (~(U32)0)/2; |
10830 | SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
10831 | SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0); | |
10832 | SvCUR(&PL_sv_no) = 0; | |
10833 | SvLEN(&PL_sv_no) = 1; | |
10834 | SvNVX(&PL_sv_no) = 0; | |
10835 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no); | |
10836 | ||
1d7c1841 | 10837 | SvANY(&PL_sv_yes) = new_XPVNV(); |
1d7c1841 GS |
10838 | SvREFCNT(&PL_sv_yes) = (~(U32)0)/2; |
10839 | SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
10840 | SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1); | |
10841 | SvCUR(&PL_sv_yes) = 1; | |
10842 | SvLEN(&PL_sv_yes) = 2; | |
10843 | SvNVX(&PL_sv_yes) = 1; | |
10844 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes); | |
10845 | ||
05ec9bb3 | 10846 | /* create (a non-shared!) shared string table */ |
1d7c1841 GS |
10847 | PL_strtab = newHV(); |
10848 | HvSHAREKEYS_off(PL_strtab); | |
10849 | hv_ksplit(PL_strtab, 512); | |
10850 | ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab); | |
10851 | ||
05ec9bb3 NIS |
10852 | PL_compiling = proto_perl->Icompiling; |
10853 | ||
10854 | /* These two PVs will be free'd special way so must set them same way op.c does */ | |
10855 | PL_compiling.cop_stashpv = savesharedpv(PL_compiling.cop_stashpv); | |
10856 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_stashpv, PL_compiling.cop_stashpv); | |
10857 | ||
10858 | PL_compiling.cop_file = savesharedpv(PL_compiling.cop_file); | |
10859 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_file, PL_compiling.cop_file); | |
10860 | ||
1d7c1841 GS |
10861 | ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling); |
10862 | if (!specialWARN(PL_compiling.cop_warnings)) | |
d2d73c3e | 10863 | PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings, param); |
ac27b0f5 | 10864 | if (!specialCopIO(PL_compiling.cop_io)) |
d2d73c3e | 10865 | PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io, param); |
1d7c1841 GS |
10866 | PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl); |
10867 | ||
10868 | /* pseudo environmental stuff */ | |
10869 | PL_origargc = proto_perl->Iorigargc; | |
e2975953 | 10870 | PL_origargv = proto_perl->Iorigargv; |
d2d73c3e | 10871 | |
d2d73c3e AB |
10872 | param->stashes = newAV(); /* Setup array of objects to call clone on */ |
10873 | ||
a1ea730d | 10874 | #ifdef PERLIO_LAYERS |
3a1ee7e8 NIS |
10875 | /* Clone PerlIO tables as soon as we can handle general xx_dup() */ |
10876 | PerlIO_clone(aTHX_ proto_perl, param); | |
a1ea730d | 10877 | #endif |
d2d73c3e AB |
10878 | |
10879 | PL_envgv = gv_dup(proto_perl->Ienvgv, param); | |
10880 | PL_incgv = gv_dup(proto_perl->Iincgv, param); | |
10881 | PL_hintgv = gv_dup(proto_perl->Ihintgv, param); | |
1d7c1841 | 10882 | PL_origfilename = SAVEPV(proto_perl->Iorigfilename); |
d2d73c3e AB |
10883 | PL_diehook = sv_dup_inc(proto_perl->Idiehook, param); |
10884 | PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook, param); | |
1d7c1841 GS |
10885 | |
10886 | /* switches */ | |
10887 | PL_minus_c = proto_perl->Iminus_c; | |
d2d73c3e | 10888 | PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel, param); |
1d7c1841 GS |
10889 | PL_localpatches = proto_perl->Ilocalpatches; |
10890 | PL_splitstr = proto_perl->Isplitstr; | |
10891 | PL_preprocess = proto_perl->Ipreprocess; | |
10892 | PL_minus_n = proto_perl->Iminus_n; | |
10893 | PL_minus_p = proto_perl->Iminus_p; | |
10894 | PL_minus_l = proto_perl->Iminus_l; | |
10895 | PL_minus_a = proto_perl->Iminus_a; | |
10896 | PL_minus_F = proto_perl->Iminus_F; | |
10897 | PL_doswitches = proto_perl->Idoswitches; | |
10898 | PL_dowarn = proto_perl->Idowarn; | |
10899 | PL_doextract = proto_perl->Idoextract; | |
10900 | PL_sawampersand = proto_perl->Isawampersand; | |
10901 | PL_unsafe = proto_perl->Iunsafe; | |
10902 | PL_inplace = SAVEPV(proto_perl->Iinplace); | |
d2d73c3e | 10903 | PL_e_script = sv_dup_inc(proto_perl->Ie_script, param); |
1d7c1841 GS |
10904 | PL_perldb = proto_perl->Iperldb; |
10905 | PL_perl_destruct_level = proto_perl->Iperl_destruct_level; | |
1cbb0781 | 10906 | PL_exit_flags = proto_perl->Iexit_flags; |
1d7c1841 GS |
10907 | |
10908 | /* magical thingies */ | |
10909 | /* XXX time(&PL_basetime) when asked for? */ | |
10910 | PL_basetime = proto_perl->Ibasetime; | |
d2d73c3e | 10911 | PL_formfeed = sv_dup(proto_perl->Iformfeed, param); |
1d7c1841 GS |
10912 | |
10913 | PL_maxsysfd = proto_perl->Imaxsysfd; | |
10914 | PL_multiline = proto_perl->Imultiline; | |
10915 | PL_statusvalue = proto_perl->Istatusvalue; | |
10916 | #ifdef VMS | |
10917 | PL_statusvalue_vms = proto_perl->Istatusvalue_vms; | |
10918 | #endif | |
0a378802 | 10919 | PL_encoding = sv_dup(proto_perl->Iencoding, param); |
1d7c1841 | 10920 | |
4a4c6fe3 | 10921 | sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */ |
1f483ca1 JH |
10922 | sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */ |
10923 | sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */ | |
4a4c6fe3 | 10924 | |
d2f185dc AMS |
10925 | /* Clone the regex array */ |
10926 | PL_regex_padav = newAV(); | |
10927 | { | |
10928 | I32 len = av_len((AV*)proto_perl->Iregex_padav); | |
10929 | SV** regexen = AvARRAY((AV*)proto_perl->Iregex_padav); | |
0f95fc41 AB |
10930 | av_push(PL_regex_padav, |
10931 | sv_dup_inc(regexen[0],param)); | |
10932 | for(i = 1; i <= len; i++) { | |
10933 | if(SvREPADTMP(regexen[i])) { | |
10934 | av_push(PL_regex_padav, sv_dup_inc(regexen[i], param)); | |
8cf8f3d1 | 10935 | } else { |
0f95fc41 AB |
10936 | av_push(PL_regex_padav, |
10937 | SvREFCNT_inc( | |
8cf8f3d1 | 10938 | newSViv(PTR2IV(re_dup(INT2PTR(REGEXP *, |
cbfa9890 | 10939 | SvIVX(regexen[i])), param))) |
0f95fc41 AB |
10940 | )); |
10941 | } | |
d2f185dc AMS |
10942 | } |
10943 | } | |
10944 | PL_regex_pad = AvARRAY(PL_regex_padav); | |
1fcf4c12 | 10945 | |
1d7c1841 | 10946 | /* shortcuts to various I/O objects */ |
d2d73c3e AB |
10947 | PL_stdingv = gv_dup(proto_perl->Istdingv, param); |
10948 | PL_stderrgv = gv_dup(proto_perl->Istderrgv, param); | |
10949 | PL_defgv = gv_dup(proto_perl->Idefgv, param); | |
10950 | PL_argvgv = gv_dup(proto_perl->Iargvgv, param); | |
10951 | PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv, param); | |
10952 | PL_argvout_stack = av_dup_inc(proto_perl->Iargvout_stack, param); | |
1d7c1841 GS |
10953 | |
10954 | /* shortcuts to regexp stuff */ | |
d2d73c3e | 10955 | PL_replgv = gv_dup(proto_perl->Ireplgv, param); |
1d7c1841 GS |
10956 | |
10957 | /* shortcuts to misc objects */ | |
d2d73c3e | 10958 | PL_errgv = gv_dup(proto_perl->Ierrgv, param); |
1d7c1841 GS |
10959 | |
10960 | /* shortcuts to debugging objects */ | |
d2d73c3e AB |
10961 | PL_DBgv = gv_dup(proto_perl->IDBgv, param); |
10962 | PL_DBline = gv_dup(proto_perl->IDBline, param); | |
10963 | PL_DBsub = gv_dup(proto_perl->IDBsub, param); | |
10964 | PL_DBsingle = sv_dup(proto_perl->IDBsingle, param); | |
10965 | PL_DBtrace = sv_dup(proto_perl->IDBtrace, param); | |
10966 | PL_DBsignal = sv_dup(proto_perl->IDBsignal, param); | |
06492da6 | 10967 | PL_DBassertion = sv_dup(proto_perl->IDBassertion, param); |
d2d73c3e AB |
10968 | PL_lineary = av_dup(proto_perl->Ilineary, param); |
10969 | PL_dbargs = av_dup(proto_perl->Idbargs, param); | |
1d7c1841 GS |
10970 | |
10971 | /* symbol tables */ | |
d2d73c3e AB |
10972 | PL_defstash = hv_dup_inc(proto_perl->Tdefstash, param); |
10973 | PL_curstash = hv_dup(proto_perl->Tcurstash, param); | |
d2d73c3e AB |
10974 | PL_debstash = hv_dup(proto_perl->Idebstash, param); |
10975 | PL_globalstash = hv_dup(proto_perl->Iglobalstash, param); | |
10976 | PL_curstname = sv_dup_inc(proto_perl->Icurstname, param); | |
10977 | ||
10978 | PL_beginav = av_dup_inc(proto_perl->Ibeginav, param); | |
ee1c5a4e | 10979 | PL_beginav_save = av_dup_inc(proto_perl->Ibeginav_save, param); |
ece599bd | 10980 | PL_checkav_save = av_dup_inc(proto_perl->Icheckav_save, param); |
d2d73c3e AB |
10981 | PL_endav = av_dup_inc(proto_perl->Iendav, param); |
10982 | PL_checkav = av_dup_inc(proto_perl->Icheckav, param); | |
10983 | PL_initav = av_dup_inc(proto_perl->Iinitav, param); | |
1d7c1841 GS |
10984 | |
10985 | PL_sub_generation = proto_perl->Isub_generation; | |
10986 | ||
10987 | /* funky return mechanisms */ | |
10988 | PL_forkprocess = proto_perl->Iforkprocess; | |
10989 | ||
10990 | /* subprocess state */ | |
d2d73c3e | 10991 | PL_fdpid = av_dup_inc(proto_perl->Ifdpid, param); |
1d7c1841 GS |
10992 | |
10993 | /* internal state */ | |
10994 | PL_tainting = proto_perl->Itainting; | |
7135f00b | 10995 | PL_taint_warn = proto_perl->Itaint_warn; |
1d7c1841 GS |
10996 | PL_maxo = proto_perl->Imaxo; |
10997 | if (proto_perl->Iop_mask) | |
10998 | PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo); | |
10999 | else | |
11000 | PL_op_mask = Nullch; | |
06492da6 | 11001 | /* PL_asserting = proto_perl->Iasserting; */ |
1d7c1841 GS |
11002 | |
11003 | /* current interpreter roots */ | |
d2d73c3e | 11004 | PL_main_cv = cv_dup_inc(proto_perl->Imain_cv, param); |
1d7c1841 GS |
11005 | PL_main_root = OpREFCNT_inc(proto_perl->Imain_root); |
11006 | PL_main_start = proto_perl->Imain_start; | |
e977893f | 11007 | PL_eval_root = proto_perl->Ieval_root; |
1d7c1841 GS |
11008 | PL_eval_start = proto_perl->Ieval_start; |
11009 | ||
11010 | /* runtime control stuff */ | |
11011 | PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl); | |
11012 | PL_copline = proto_perl->Icopline; | |
11013 | ||
11014 | PL_filemode = proto_perl->Ifilemode; | |
11015 | PL_lastfd = proto_perl->Ilastfd; | |
11016 | PL_oldname = proto_perl->Ioldname; /* XXX not quite right */ | |
11017 | PL_Argv = NULL; | |
11018 | PL_Cmd = Nullch; | |
11019 | PL_gensym = proto_perl->Igensym; | |
11020 | PL_preambled = proto_perl->Ipreambled; | |
d2d73c3e | 11021 | PL_preambleav = av_dup_inc(proto_perl->Ipreambleav, param); |
1d7c1841 GS |
11022 | PL_laststatval = proto_perl->Ilaststatval; |
11023 | PL_laststype = proto_perl->Ilaststype; | |
11024 | PL_mess_sv = Nullsv; | |
11025 | ||
d2d73c3e | 11026 | PL_ors_sv = sv_dup_inc(proto_perl->Iors_sv, param); |
1d7c1841 GS |
11027 | PL_ofmt = SAVEPV(proto_perl->Iofmt); |
11028 | ||
11029 | /* interpreter atexit processing */ | |
11030 | PL_exitlistlen = proto_perl->Iexitlistlen; | |
11031 | if (PL_exitlistlen) { | |
11032 | New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
11033 | Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
11034 | } | |
11035 | else | |
11036 | PL_exitlist = (PerlExitListEntry*)NULL; | |
d2d73c3e | 11037 | PL_modglobal = hv_dup_inc(proto_perl->Imodglobal, param); |
19e8ce8e AB |
11038 | PL_custom_op_names = hv_dup_inc(proto_perl->Icustom_op_names,param); |
11039 | PL_custom_op_descs = hv_dup_inc(proto_perl->Icustom_op_descs,param); | |
1d7c1841 GS |
11040 | |
11041 | PL_profiledata = NULL; | |
a8fc9800 | 11042 | PL_rsfp = fp_dup(proto_perl->Irsfp, '<', param); |
1d7c1841 | 11043 | /* PL_rsfp_filters entries have fake IoDIRP() */ |
d2d73c3e | 11044 | PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters, param); |
1d7c1841 | 11045 | |
d2d73c3e | 11046 | PL_compcv = cv_dup(proto_perl->Icompcv, param); |
dd2155a4 DM |
11047 | |
11048 | PAD_CLONE_VARS(proto_perl, param); | |
1d7c1841 GS |
11049 | |
11050 | #ifdef HAVE_INTERP_INTERN | |
11051 | sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern); | |
11052 | #endif | |
11053 | ||
11054 | /* more statics moved here */ | |
11055 | PL_generation = proto_perl->Igeneration; | |
d2d73c3e | 11056 | PL_DBcv = cv_dup(proto_perl->IDBcv, param); |
1d7c1841 GS |
11057 | |
11058 | PL_in_clean_objs = proto_perl->Iin_clean_objs; | |
11059 | PL_in_clean_all = proto_perl->Iin_clean_all; | |
11060 | ||
11061 | PL_uid = proto_perl->Iuid; | |
11062 | PL_euid = proto_perl->Ieuid; | |
11063 | PL_gid = proto_perl->Igid; | |
11064 | PL_egid = proto_perl->Iegid; | |
11065 | PL_nomemok = proto_perl->Inomemok; | |
11066 | PL_an = proto_perl->Ian; | |
1d7c1841 GS |
11067 | PL_op_seqmax = proto_perl->Iop_seqmax; |
11068 | PL_evalseq = proto_perl->Ievalseq; | |
11069 | PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */ | |
11070 | PL_origalen = proto_perl->Iorigalen; | |
11071 | PL_pidstatus = newHV(); /* XXX flag for cloning? */ | |
11072 | PL_osname = SAVEPV(proto_perl->Iosname); | |
5c728af0 | 11073 | PL_sh_path_compat = proto_perl->Ish_path_compat; /* XXX never deallocated */ |
1d7c1841 GS |
11074 | PL_sighandlerp = proto_perl->Isighandlerp; |
11075 | ||
11076 | ||
11077 | PL_runops = proto_perl->Irunops; | |
11078 | ||
11079 | Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char); | |
11080 | ||
11081 | #ifdef CSH | |
11082 | PL_cshlen = proto_perl->Icshlen; | |
74f1b2b8 | 11083 | PL_cshname = proto_perl->Icshname; /* XXX never deallocated */ |
1d7c1841 GS |
11084 | #endif |
11085 | ||
11086 | PL_lex_state = proto_perl->Ilex_state; | |
11087 | PL_lex_defer = proto_perl->Ilex_defer; | |
11088 | PL_lex_expect = proto_perl->Ilex_expect; | |
11089 | PL_lex_formbrack = proto_perl->Ilex_formbrack; | |
11090 | PL_lex_dojoin = proto_perl->Ilex_dojoin; | |
11091 | PL_lex_starts = proto_perl->Ilex_starts; | |
d2d73c3e AB |
11092 | PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff, param); |
11093 | PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl, param); | |
1d7c1841 GS |
11094 | PL_lex_op = proto_perl->Ilex_op; |
11095 | PL_lex_inpat = proto_perl->Ilex_inpat; | |
11096 | PL_lex_inwhat = proto_perl->Ilex_inwhat; | |
11097 | PL_lex_brackets = proto_perl->Ilex_brackets; | |
11098 | i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets); | |
11099 | PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i); | |
11100 | PL_lex_casemods = proto_perl->Ilex_casemods; | |
11101 | i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods); | |
11102 | PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i); | |
11103 | ||
11104 | Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE); | |
11105 | Copy(proto_perl->Inexttype, PL_nexttype, 5, I32); | |
11106 | PL_nexttoke = proto_perl->Inexttoke; | |
11107 | ||
1d773130 TB |
11108 | /* XXX This is probably masking the deeper issue of why |
11109 | * SvANY(proto_perl->Ilinestr) can be NULL at this point. For test case: | |
11110 | * http://archive.develooper.com/perl5-porters%40perl.org/msg83298.html | |
11111 | * (A little debugging with a watchpoint on it may help.) | |
11112 | */ | |
389edf32 TB |
11113 | if (SvANY(proto_perl->Ilinestr)) { |
11114 | PL_linestr = sv_dup_inc(proto_perl->Ilinestr, param); | |
11115 | i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr); | |
11116 | PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11117 | i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr); | |
11118 | PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11119 | i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr); | |
11120 | PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11121 | i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr); | |
11122 | PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11123 | } | |
11124 | else { | |
11125 | PL_linestr = NEWSV(65,79); | |
11126 | sv_upgrade(PL_linestr,SVt_PVIV); | |
11127 | sv_setpvn(PL_linestr,"",0); | |
11128 | PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
11129 | } | |
1d7c1841 | 11130 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
1d7c1841 GS |
11131 | PL_pending_ident = proto_perl->Ipending_ident; |
11132 | PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */ | |
11133 | ||
11134 | PL_expect = proto_perl->Iexpect; | |
11135 | ||
11136 | PL_multi_start = proto_perl->Imulti_start; | |
11137 | PL_multi_end = proto_perl->Imulti_end; | |
11138 | PL_multi_open = proto_perl->Imulti_open; | |
11139 | PL_multi_close = proto_perl->Imulti_close; | |
11140 | ||
11141 | PL_error_count = proto_perl->Ierror_count; | |
11142 | PL_subline = proto_perl->Isubline; | |
d2d73c3e | 11143 | PL_subname = sv_dup_inc(proto_perl->Isubname, param); |
1d7c1841 | 11144 | |
1d773130 | 11145 | /* XXX See comment on SvANY(proto_perl->Ilinestr) above */ |
389edf32 TB |
11146 | if (SvANY(proto_perl->Ilinestr)) { |
11147 | i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr); | |
11148 | PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11149 | i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr); | |
11150 | PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11151 | PL_last_lop_op = proto_perl->Ilast_lop_op; | |
11152 | } | |
11153 | else { | |
11154 | PL_last_uni = SvPVX(PL_linestr); | |
11155 | PL_last_lop = SvPVX(PL_linestr); | |
11156 | PL_last_lop_op = 0; | |
11157 | } | |
1d7c1841 | 11158 | PL_in_my = proto_perl->Iin_my; |
d2d73c3e | 11159 | PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash, param); |
1d7c1841 GS |
11160 | #ifdef FCRYPT |
11161 | PL_cryptseen = proto_perl->Icryptseen; | |
11162 | #endif | |
11163 | ||
11164 | PL_hints = proto_perl->Ihints; | |
11165 | ||
11166 | PL_amagic_generation = proto_perl->Iamagic_generation; | |
11167 | ||
11168 | #ifdef USE_LOCALE_COLLATE | |
11169 | PL_collation_ix = proto_perl->Icollation_ix; | |
11170 | PL_collation_name = SAVEPV(proto_perl->Icollation_name); | |
11171 | PL_collation_standard = proto_perl->Icollation_standard; | |
11172 | PL_collxfrm_base = proto_perl->Icollxfrm_base; | |
11173 | PL_collxfrm_mult = proto_perl->Icollxfrm_mult; | |
11174 | #endif /* USE_LOCALE_COLLATE */ | |
11175 | ||
11176 | #ifdef USE_LOCALE_NUMERIC | |
11177 | PL_numeric_name = SAVEPV(proto_perl->Inumeric_name); | |
11178 | PL_numeric_standard = proto_perl->Inumeric_standard; | |
11179 | PL_numeric_local = proto_perl->Inumeric_local; | |
d2d73c3e | 11180 | PL_numeric_radix_sv = sv_dup_inc(proto_perl->Inumeric_radix_sv, param); |
1d7c1841 GS |
11181 | #endif /* !USE_LOCALE_NUMERIC */ |
11182 | ||
11183 | /* utf8 character classes */ | |
d2d73c3e AB |
11184 | PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum, param); |
11185 | PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc, param); | |
11186 | PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii, param); | |
11187 | PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha, param); | |
11188 | PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space, param); | |
11189 | PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl, param); | |
11190 | PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph, param); | |
11191 | PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit, param); | |
11192 | PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper, param); | |
11193 | PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower, param); | |
11194 | PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print, param); | |
11195 | PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct, param); | |
11196 | PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit, param); | |
11197 | PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark, param); | |
11198 | PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper, param); | |
11199 | PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle, param); | |
11200 | PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower, param); | |
b4e400f9 | 11201 | PL_utf8_tofold = sv_dup_inc(proto_perl->Iutf8_tofold, param); |
82686b01 JH |
11202 | PL_utf8_idstart = sv_dup_inc(proto_perl->Iutf8_idstart, param); |
11203 | PL_utf8_idcont = sv_dup_inc(proto_perl->Iutf8_idcont, param); | |
1d7c1841 | 11204 | |
6c3182a5 | 11205 | /* Did the locale setup indicate UTF-8? */ |
9769094f | 11206 | PL_utf8locale = proto_perl->Iutf8locale; |
6c3182a5 JH |
11207 | /* Unicode features (see perlrun/-C) */ |
11208 | PL_unicode = proto_perl->Iunicode; | |
11209 | ||
11210 | /* Pre-5.8 signals control */ | |
11211 | PL_signals = proto_perl->Isignals; | |
11212 | ||
11213 | /* times() ticks per second */ | |
11214 | PL_clocktick = proto_perl->Iclocktick; | |
11215 | ||
11216 | /* Recursion stopper for PerlIO_find_layer */ | |
11217 | PL_in_load_module = proto_perl->Iin_load_module; | |
11218 | ||
11219 | /* sort() routine */ | |
11220 | PL_sort_RealCmp = proto_perl->Isort_RealCmp; | |
11221 | ||
57c6e6d2 JH |
11222 | /* Not really needed/useful since the reenrant_retint is "volatile", |
11223 | * but do it for consistency's sake. */ | |
11224 | PL_reentrant_retint = proto_perl->Ireentrant_retint; | |
11225 | ||
15a5279a JH |
11226 | /* Hooks to shared SVs and locks. */ |
11227 | PL_sharehook = proto_perl->Isharehook; | |
11228 | PL_lockhook = proto_perl->Ilockhook; | |
11229 | PL_unlockhook = proto_perl->Iunlockhook; | |
11230 | PL_threadhook = proto_perl->Ithreadhook; | |
11231 | ||
bce260cd JH |
11232 | PL_runops_std = proto_perl->Irunops_std; |
11233 | PL_runops_dbg = proto_perl->Irunops_dbg; | |
11234 | ||
11235 | #ifdef THREADS_HAVE_PIDS | |
11236 | PL_ppid = proto_perl->Ippid; | |
11237 | #endif | |
11238 | ||
1d7c1841 GS |
11239 | /* swatch cache */ |
11240 | PL_last_swash_hv = Nullhv; /* reinits on demand */ | |
11241 | PL_last_swash_klen = 0; | |
11242 | PL_last_swash_key[0]= '\0'; | |
11243 | PL_last_swash_tmps = (U8*)NULL; | |
11244 | PL_last_swash_slen = 0; | |
11245 | ||
11246 | /* perly.c globals */ | |
11247 | PL_yydebug = proto_perl->Iyydebug; | |
11248 | PL_yynerrs = proto_perl->Iyynerrs; | |
11249 | PL_yyerrflag = proto_perl->Iyyerrflag; | |
11250 | PL_yychar = proto_perl->Iyychar; | |
11251 | PL_yyval = proto_perl->Iyyval; | |
11252 | PL_yylval = proto_perl->Iyylval; | |
11253 | ||
11254 | PL_glob_index = proto_perl->Iglob_index; | |
11255 | PL_srand_called = proto_perl->Isrand_called; | |
11256 | PL_uudmap['M'] = 0; /* reinits on demand */ | |
11257 | PL_bitcount = Nullch; /* reinits on demand */ | |
11258 | ||
66fe0623 NIS |
11259 | if (proto_perl->Ipsig_pend) { |
11260 | Newz(0, PL_psig_pend, SIG_SIZE, int); | |
9dd79c3f | 11261 | } |
66fe0623 NIS |
11262 | else { |
11263 | PL_psig_pend = (int*)NULL; | |
11264 | } | |
11265 | ||
1d7c1841 | 11266 | if (proto_perl->Ipsig_ptr) { |
76d3c696 JH |
11267 | Newz(0, PL_psig_ptr, SIG_SIZE, SV*); |
11268 | Newz(0, PL_psig_name, SIG_SIZE, SV*); | |
76d3c696 | 11269 | for (i = 1; i < SIG_SIZE; i++) { |
d2d73c3e AB |
11270 | PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i], param); |
11271 | PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i], param); | |
1d7c1841 GS |
11272 | } |
11273 | } | |
11274 | else { | |
11275 | PL_psig_ptr = (SV**)NULL; | |
11276 | PL_psig_name = (SV**)NULL; | |
11277 | } | |
11278 | ||
11279 | /* thrdvar.h stuff */ | |
11280 | ||
a0739874 | 11281 | if (flags & CLONEf_COPY_STACKS) { |
1d7c1841 GS |
11282 | /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */ |
11283 | PL_tmps_ix = proto_perl->Ttmps_ix; | |
11284 | PL_tmps_max = proto_perl->Ttmps_max; | |
11285 | PL_tmps_floor = proto_perl->Ttmps_floor; | |
11286 | Newz(50, PL_tmps_stack, PL_tmps_max, SV*); | |
11287 | i = 0; | |
11288 | while (i <= PL_tmps_ix) { | |
d2d73c3e | 11289 | PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i], param); |
1d7c1841 GS |
11290 | ++i; |
11291 | } | |
11292 | ||
11293 | /* next PUSHMARK() sets *(PL_markstack_ptr+1) */ | |
11294 | i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack; | |
11295 | Newz(54, PL_markstack, i, I32); | |
11296 | PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max | |
11297 | - proto_perl->Tmarkstack); | |
11298 | PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr | |
11299 | - proto_perl->Tmarkstack); | |
11300 | Copy(proto_perl->Tmarkstack, PL_markstack, | |
11301 | PL_markstack_ptr - PL_markstack + 1, I32); | |
11302 | ||
11303 | /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix] | |
11304 | * NOTE: unlike the others! */ | |
11305 | PL_scopestack_ix = proto_perl->Tscopestack_ix; | |
11306 | PL_scopestack_max = proto_perl->Tscopestack_max; | |
11307 | Newz(54, PL_scopestack, PL_scopestack_max, I32); | |
11308 | Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32); | |
11309 | ||
11310 | /* next push_return() sets PL_retstack[PL_retstack_ix] | |
11311 | * NOTE: unlike the others! */ | |
11312 | PL_retstack_ix = proto_perl->Tretstack_ix; | |
11313 | PL_retstack_max = proto_perl->Tretstack_max; | |
11314 | Newz(54, PL_retstack, PL_retstack_max, OP*); | |
ce0a1ae0 | 11315 | Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, OP*); |
1d7c1841 GS |
11316 | |
11317 | /* NOTE: si_dup() looks at PL_markstack */ | |
d2d73c3e | 11318 | PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo, param); |
1d7c1841 GS |
11319 | |
11320 | /* PL_curstack = PL_curstackinfo->si_stack; */ | |
d2d73c3e AB |
11321 | PL_curstack = av_dup(proto_perl->Tcurstack, param); |
11322 | PL_mainstack = av_dup(proto_perl->Tmainstack, param); | |
1d7c1841 GS |
11323 | |
11324 | /* next PUSHs() etc. set *(PL_stack_sp+1) */ | |
11325 | PL_stack_base = AvARRAY(PL_curstack); | |
11326 | PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp | |
11327 | - proto_perl->Tstack_base); | |
11328 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); | |
11329 | ||
11330 | /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix] | |
11331 | * NOTE: unlike the others! */ | |
11332 | PL_savestack_ix = proto_perl->Tsavestack_ix; | |
11333 | PL_savestack_max = proto_perl->Tsavestack_max; | |
11334 | /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/ | |
d2d73c3e | 11335 | PL_savestack = ss_dup(proto_perl, param); |
1d7c1841 GS |
11336 | } |
11337 | else { | |
11338 | init_stacks(); | |
985e7056 | 11339 | ENTER; /* perl_destruct() wants to LEAVE; */ |
1d7c1841 GS |
11340 | } |
11341 | ||
11342 | PL_start_env = proto_perl->Tstart_env; /* XXXXXX */ | |
11343 | PL_top_env = &PL_start_env; | |
11344 | ||
11345 | PL_op = proto_perl->Top; | |
11346 | ||
11347 | PL_Sv = Nullsv; | |
11348 | PL_Xpv = (XPV*)NULL; | |
11349 | PL_na = proto_perl->Tna; | |
11350 | ||
11351 | PL_statbuf = proto_perl->Tstatbuf; | |
11352 | PL_statcache = proto_perl->Tstatcache; | |
d2d73c3e AB |
11353 | PL_statgv = gv_dup(proto_perl->Tstatgv, param); |
11354 | PL_statname = sv_dup_inc(proto_perl->Tstatname, param); | |
1d7c1841 GS |
11355 | #ifdef HAS_TIMES |
11356 | PL_timesbuf = proto_perl->Ttimesbuf; | |
11357 | #endif | |
11358 | ||
11359 | PL_tainted = proto_perl->Ttainted; | |
11360 | PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */ | |
d2d73c3e AB |
11361 | PL_rs = sv_dup_inc(proto_perl->Trs, param); |
11362 | PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv, param); | |
11363 | PL_ofs_sv = sv_dup_inc(proto_perl->Tofs_sv, param); | |
11364 | PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv, param); | |
1d7c1841 | 11365 | PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */ |
d2d73c3e AB |
11366 | PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget, param); |
11367 | PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget, param); | |
11368 | PL_formtarget = sv_dup(proto_perl->Tformtarget, param); | |
1d7c1841 GS |
11369 | |
11370 | PL_restartop = proto_perl->Trestartop; | |
11371 | PL_in_eval = proto_perl->Tin_eval; | |
11372 | PL_delaymagic = proto_perl->Tdelaymagic; | |
11373 | PL_dirty = proto_perl->Tdirty; | |
11374 | PL_localizing = proto_perl->Tlocalizing; | |
11375 | ||
14dd3ad8 | 11376 | #ifdef PERL_FLEXIBLE_EXCEPTIONS |
1d7c1841 | 11377 | PL_protect = proto_perl->Tprotect; |
14dd3ad8 | 11378 | #endif |
d2d73c3e | 11379 | PL_errors = sv_dup_inc(proto_perl->Terrors, param); |
dd28f7bb | 11380 | PL_hv_fetch_ent_mh = Nullhe; |
1d7c1841 GS |
11381 | PL_modcount = proto_perl->Tmodcount; |
11382 | PL_lastgotoprobe = Nullop; | |
11383 | PL_dumpindent = proto_perl->Tdumpindent; | |
11384 | ||
11385 | PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl); | |
d2d73c3e AB |
11386 | PL_sortstash = hv_dup(proto_perl->Tsortstash, param); |
11387 | PL_firstgv = gv_dup(proto_perl->Tfirstgv, param); | |
11388 | PL_secondgv = gv_dup(proto_perl->Tsecondgv, param); | |
1d7c1841 GS |
11389 | PL_sortcxix = proto_perl->Tsortcxix; |
11390 | PL_efloatbuf = Nullch; /* reinits on demand */ | |
11391 | PL_efloatsize = 0; /* reinits on demand */ | |
11392 | ||
11393 | /* regex stuff */ | |
11394 | ||
11395 | PL_screamfirst = NULL; | |
11396 | PL_screamnext = NULL; | |
11397 | PL_maxscream = -1; /* reinits on demand */ | |
11398 | PL_lastscream = Nullsv; | |
11399 | ||
11400 | PL_watchaddr = NULL; | |
11401 | PL_watchok = Nullch; | |
11402 | ||
11403 | PL_regdummy = proto_perl->Tregdummy; | |
1d7c1841 GS |
11404 | PL_regprecomp = Nullch; |
11405 | PL_regnpar = 0; | |
11406 | PL_regsize = 0; | |
1d7c1841 GS |
11407 | PL_colorset = 0; /* reinits PL_colors[] */ |
11408 | /*PL_colors[6] = {0,0,0,0,0,0};*/ | |
1d7c1841 GS |
11409 | PL_reginput = Nullch; |
11410 | PL_regbol = Nullch; | |
11411 | PL_regeol = Nullch; | |
11412 | PL_regstartp = (I32*)NULL; | |
11413 | PL_regendp = (I32*)NULL; | |
11414 | PL_reglastparen = (U32*)NULL; | |
11415 | PL_regtill = Nullch; | |
1d7c1841 GS |
11416 | PL_reg_start_tmp = (char**)NULL; |
11417 | PL_reg_start_tmpl = 0; | |
11418 | PL_regdata = (struct reg_data*)NULL; | |
11419 | PL_bostr = Nullch; | |
11420 | PL_reg_flags = 0; | |
11421 | PL_reg_eval_set = 0; | |
11422 | PL_regnarrate = 0; | |
11423 | PL_regprogram = (regnode*)NULL; | |
11424 | PL_regindent = 0; | |
11425 | PL_regcc = (CURCUR*)NULL; | |
11426 | PL_reg_call_cc = (struct re_cc_state*)NULL; | |
11427 | PL_reg_re = (regexp*)NULL; | |
11428 | PL_reg_ganch = Nullch; | |
11429 | PL_reg_sv = Nullsv; | |
53c4c00c | 11430 | PL_reg_match_utf8 = FALSE; |
1d7c1841 GS |
11431 | PL_reg_magic = (MAGIC*)NULL; |
11432 | PL_reg_oldpos = 0; | |
11433 | PL_reg_oldcurpm = (PMOP*)NULL; | |
11434 | PL_reg_curpm = (PMOP*)NULL; | |
11435 | PL_reg_oldsaved = Nullch; | |
11436 | PL_reg_oldsavedlen = 0; | |
ed252734 | 11437 | #ifdef PERL_COPY_ON_WRITE |
504cff3b | 11438 | PL_nrs = Nullsv; |
ed252734 | 11439 | #endif |
1d7c1841 GS |
11440 | PL_reg_maxiter = 0; |
11441 | PL_reg_leftiter = 0; | |
11442 | PL_reg_poscache = Nullch; | |
11443 | PL_reg_poscache_size= 0; | |
11444 | ||
11445 | /* RE engine - function pointers */ | |
11446 | PL_regcompp = proto_perl->Tregcompp; | |
11447 | PL_regexecp = proto_perl->Tregexecp; | |
11448 | PL_regint_start = proto_perl->Tregint_start; | |
11449 | PL_regint_string = proto_perl->Tregint_string; | |
11450 | PL_regfree = proto_perl->Tregfree; | |
11451 | ||
11452 | PL_reginterp_cnt = 0; | |
11453 | PL_reg_starttry = 0; | |
11454 | ||
a2efc822 SC |
11455 | /* Pluggable optimizer */ |
11456 | PL_peepp = proto_perl->Tpeepp; | |
11457 | ||
081fc587 AB |
11458 | PL_stashcache = newHV(); |
11459 | ||
a0739874 DM |
11460 | if (!(flags & CLONEf_KEEP_PTR_TABLE)) { |
11461 | ptr_table_free(PL_ptr_table); | |
11462 | PL_ptr_table = NULL; | |
11463 | } | |
8cf8f3d1 | 11464 | |
f284b03f AMS |
11465 | /* Call the ->CLONE method, if it exists, for each of the stashes |
11466 | identified by sv_dup() above. | |
11467 | */ | |
d2d73c3e AB |
11468 | while(av_len(param->stashes) != -1) { |
11469 | HV* stash = (HV*) av_shift(param->stashes); | |
f284b03f AMS |
11470 | GV* cloner = gv_fetchmethod_autoload(stash, "CLONE", 0); |
11471 | if (cloner && GvCV(cloner)) { | |
11472 | dSP; | |
11473 | ENTER; | |
11474 | SAVETMPS; | |
11475 | PUSHMARK(SP); | |
dc507217 | 11476 | XPUSHs(sv_2mortal(newSVpv(HvNAME(stash), 0))); |
f284b03f AMS |
11477 | PUTBACK; |
11478 | call_sv((SV*)GvCV(cloner), G_DISCARD); | |
11479 | FREETMPS; | |
11480 | LEAVE; | |
11481 | } | |
4a09accc | 11482 | } |
a0739874 | 11483 | |
dc507217 | 11484 | SvREFCNT_dec(param->stashes); |
dc507217 | 11485 | |
1d7c1841 | 11486 | return my_perl; |
1d7c1841 GS |
11487 | } |
11488 | ||
1d7c1841 | 11489 | #endif /* USE_ITHREADS */ |
a0ae6670 | 11490 | |
9f4817db | 11491 | /* |
ccfc67b7 JH |
11492 | =head1 Unicode Support |
11493 | ||
9f4817db JH |
11494 | =for apidoc sv_recode_to_utf8 |
11495 | ||
5d170f3a JH |
11496 | The encoding is assumed to be an Encode object, on entry the PV |
11497 | of the sv is assumed to be octets in that encoding, and the sv | |
11498 | will be converted into Unicode (and UTF-8). | |
9f4817db | 11499 | |
5d170f3a JH |
11500 | If the sv already is UTF-8 (or if it is not POK), or if the encoding |
11501 | is not a reference, nothing is done to the sv. If the encoding is not | |
1768d7eb JH |
11502 | an C<Encode::XS> Encoding object, bad things will happen. |
11503 | (See F<lib/encoding.pm> and L<Encode>). | |
9f4817db | 11504 | |
5d170f3a | 11505 | The PV of the sv is returned. |
9f4817db | 11506 | |
5d170f3a JH |
11507 | =cut */ |
11508 | ||
11509 | char * | |
11510 | Perl_sv_recode_to_utf8(pTHX_ SV *sv, SV *encoding) | |
11511 | { | |
220e2d4e | 11512 | if (SvPOK(sv) && !SvUTF8(sv) && !IN_BYTES && SvROK(encoding)) { |
d0063567 DK |
11513 | SV *uni; |
11514 | STRLEN len; | |
11515 | char *s; | |
11516 | dSP; | |
11517 | ENTER; | |
11518 | SAVETMPS; | |
220e2d4e | 11519 | save_re_context(); |
d0063567 DK |
11520 | PUSHMARK(sp); |
11521 | EXTEND(SP, 3); | |
11522 | XPUSHs(encoding); | |
11523 | XPUSHs(sv); | |
f9893866 NIS |
11524 | /* |
11525 | NI-S 2002/07/09 | |
11526 | Passing sv_yes is wrong - it needs to be or'ed set of constants | |
11527 | for Encode::XS, while UTf-8 decode (currently) assumes a true value means | |
11528 | remove converted chars from source. | |
11529 | ||
11530 | Both will default the value - let them. | |
11531 | ||
d0063567 | 11532 | XPUSHs(&PL_sv_yes); |
f9893866 | 11533 | */ |
d0063567 DK |
11534 | PUTBACK; |
11535 | call_method("decode", G_SCALAR); | |
11536 | SPAGAIN; | |
11537 | uni = POPs; | |
11538 | PUTBACK; | |
11539 | s = SvPV(uni, len); | |
d0063567 DK |
11540 | if (s != SvPVX(sv)) { |
11541 | SvGROW(sv, len + 1); | |
11542 | Move(s, SvPVX(sv), len, char); | |
11543 | SvCUR_set(sv, len); | |
11544 | SvPVX(sv)[len] = 0; | |
11545 | } | |
11546 | FREETMPS; | |
11547 | LEAVE; | |
d0063567 | 11548 | SvUTF8_on(sv); |
f9893866 NIS |
11549 | } |
11550 | return SvPVX(sv); | |
9f4817db JH |
11551 | } |
11552 | ||
220e2d4e IH |
11553 | /* |
11554 | =for apidoc sv_cat_decode | |
11555 | ||
11556 | The encoding is assumed to be an Encode object, the PV of the ssv is | |
11557 | assumed to be octets in that encoding and decoding the input starts | |
11558 | from the position which (PV + *offset) pointed to. The dsv will be | |
11559 | concatenated the decoded UTF-8 string from ssv. Decoding will terminate | |
11560 | when the string tstr appears in decoding output or the input ends on | |
11561 | the PV of the ssv. The value which the offset points will be modified | |
11562 | to the last input position on the ssv. | |
68795e93 | 11563 | |
220e2d4e IH |
11564 | Returns TRUE if the terminator was found, else returns FALSE. |
11565 | ||
11566 | =cut */ | |
11567 | ||
11568 | bool | |
11569 | Perl_sv_cat_decode(pTHX_ SV *dsv, SV *encoding, | |
11570 | SV *ssv, int *offset, char *tstr, int tlen) | |
11571 | { | |
a73e8557 | 11572 | bool ret = FALSE; |
220e2d4e | 11573 | if (SvPOK(ssv) && SvPOK(dsv) && SvROK(encoding) && offset) { |
220e2d4e IH |
11574 | SV *offsv; |
11575 | dSP; | |
11576 | ENTER; | |
11577 | SAVETMPS; | |
11578 | save_re_context(); | |
11579 | PUSHMARK(sp); | |
11580 | EXTEND(SP, 6); | |
11581 | XPUSHs(encoding); | |
11582 | XPUSHs(dsv); | |
11583 | XPUSHs(ssv); | |
11584 | XPUSHs(offsv = sv_2mortal(newSViv(*offset))); | |
11585 | XPUSHs(sv_2mortal(newSVpvn(tstr, tlen))); | |
11586 | PUTBACK; | |
11587 | call_method("cat_decode", G_SCALAR); | |
11588 | SPAGAIN; | |
11589 | ret = SvTRUE(TOPs); | |
11590 | *offset = SvIV(offsv); | |
11591 | PUTBACK; | |
11592 | FREETMPS; | |
11593 | LEAVE; | |
220e2d4e | 11594 | } |
a73e8557 JH |
11595 | else |
11596 | Perl_croak(aTHX_ "Invalid argument to sv_cat_decode"); | |
11597 | return ret; | |
220e2d4e | 11598 | } |
f9893866 | 11599 |