Commit | Line | Data |
---|---|---|
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 | |
e23c8137 JH |
27 | #ifdef PERL_UTF8_CACHE_ASSERT |
28 | /* The cache element 0 is the Unicode offset; | |
29 | * the cache element 1 is the byte offset of the element 0; | |
30 | * the cache element 2 is the Unicode length of the substring; | |
31 | * the cache element 3 is the byte length of the substring; | |
32 | * The checking of the substring side would be good | |
33 | * but substr() has enough code paths to make my head spin; | |
34 | * if adding more checks watch out for the following tests: | |
35 | * t/op/index.t t/op/length.t t/op/pat.t t/op/substr.t | |
36 | * lib/utf8.t lib/Unicode/Collate/t/index.t | |
37 | * --jhi | |
38 | */ | |
39 | #define ASSERT_UTF8_CACHE(cache) \ | |
40 | STMT_START { if (cache) { assert((cache)[0] <= (cache)[1]); } } STMT_END | |
41 | #else | |
42 | #define ASSERT_UTF8_CACHE(cache) NOOP | |
43 | #endif | |
44 | ||
765f542d NC |
45 | #ifdef PERL_COPY_ON_WRITE |
46 | #define SV_COW_NEXT_SV(sv) INT2PTR(SV *,SvUVX(sv)) | |
a29f6d03 | 47 | #define SV_COW_NEXT_SV_SET(current,next) SvUVX(current) = PTR2UV(next) |
b5ccf5f2 | 48 | /* This is a pessimistic view. Scalar must be purely a read-write PV to copy- |
765f542d | 49 | on-write. */ |
765f542d | 50 | #endif |
645c22ef DM |
51 | |
52 | /* ============================================================================ | |
53 | ||
54 | =head1 Allocation and deallocation of SVs. | |
55 | ||
5e045b90 AMS |
56 | An SV (or AV, HV, etc.) is allocated in two parts: the head (struct sv, |
57 | av, hv...) contains type and reference count information, as well as a | |
58 | pointer to the body (struct xrv, xpv, xpviv...), which contains fields | |
59 | specific to each type. | |
60 | ||
61 | Normally, this allocation is done using arenas, which are approximately | |
62 | 1K chunks of memory parcelled up into N heads or bodies. The first slot | |
63 | in each arena is reserved, and is used to hold a link to the next arena. | |
64 | In the case of heads, the unused first slot also contains some flags and | |
65 | a note of the number of slots. Snaked through each arena chain is a | |
66 | linked list of free items; when this becomes empty, an extra arena is | |
67 | allocated and divided up into N items which are threaded into the free | |
68 | list. | |
645c22ef DM |
69 | |
70 | The following global variables are associated with arenas: | |
71 | ||
72 | PL_sv_arenaroot pointer to list of SV arenas | |
73 | PL_sv_root pointer to list of free SV structures | |
74 | ||
75 | PL_foo_arenaroot pointer to list of foo arenas, | |
76 | PL_foo_root pointer to list of free foo bodies | |
77 | ... for foo in xiv, xnv, xrv, xpv etc. | |
78 | ||
79 | Note that some of the larger and more rarely used body types (eg xpvio) | |
80 | are not allocated using arenas, but are instead just malloc()/free()ed as | |
81 | required. Also, if PURIFY is defined, arenas are abandoned altogether, | |
82 | with all items individually malloc()ed. In addition, a few SV heads are | |
83 | not allocated from an arena, but are instead directly created as static | |
84 | or auto variables, eg PL_sv_undef. | |
85 | ||
86 | The SV arena serves the secondary purpose of allowing still-live SVs | |
87 | to be located and destroyed during final cleanup. | |
88 | ||
89 | At the lowest level, the macros new_SV() and del_SV() grab and free | |
90 | an SV head. (If debugging with -DD, del_SV() calls the function S_del_sv() | |
91 | to return the SV to the free list with error checking.) new_SV() calls | |
92 | more_sv() / sv_add_arena() to add an extra arena if the free list is empty. | |
93 | SVs in the free list have their SvTYPE field set to all ones. | |
94 | ||
95 | Similarly, there are macros new_XIV()/del_XIV(), new_XNV()/del_XNV() etc | |
96 | that allocate and return individual body types. Normally these are mapped | |
ff276b08 RG |
97 | to the arena-manipulating functions new_xiv()/del_xiv() etc, but may be |
98 | instead mapped directly to malloc()/free() if PURIFY is defined. The | |
645c22ef DM |
99 | new/del functions remove from, or add to, the appropriate PL_foo_root |
100 | list, and call more_xiv() etc to add a new arena if the list is empty. | |
101 | ||
ff276b08 | 102 | At the time of very final cleanup, sv_free_arenas() is called from |
645c22ef DM |
103 | perl_destruct() to physically free all the arenas allocated since the |
104 | start of the interpreter. Note that this also clears PL_he_arenaroot, | |
105 | which is otherwise dealt with in hv.c. | |
106 | ||
107 | Manipulation of any of the PL_*root pointers is protected by enclosing | |
108 | LOCK_SV_MUTEX; ... UNLOCK_SV_MUTEX calls which should Do the Right Thing | |
109 | if threads are enabled. | |
110 | ||
111 | The function visit() scans the SV arenas list, and calls a specified | |
112 | function for each SV it finds which is still live - ie which has an SvTYPE | |
113 | other than all 1's, and a non-zero SvREFCNT. visit() is used by the | |
114 | following functions (specified as [function that calls visit()] / [function | |
115 | called by visit() for each SV]): | |
116 | ||
117 | sv_report_used() / do_report_used() | |
118 | dump all remaining SVs (debugging aid) | |
119 | ||
120 | sv_clean_objs() / do_clean_objs(),do_clean_named_objs() | |
121 | Attempt to free all objects pointed to by RVs, | |
122 | and, unless DISABLE_DESTRUCTOR_KLUDGE is defined, | |
123 | try to do the same for all objects indirectly | |
124 | referenced by typeglobs too. Called once from | |
125 | perl_destruct(), prior to calling sv_clean_all() | |
126 | below. | |
127 | ||
128 | sv_clean_all() / do_clean_all() | |
129 | SvREFCNT_dec(sv) each remaining SV, possibly | |
130 | triggering an sv_free(). It also sets the | |
131 | SVf_BREAK flag on the SV to indicate that the | |
132 | refcnt has been artificially lowered, and thus | |
133 | stopping sv_free() from giving spurious warnings | |
134 | about SVs which unexpectedly have a refcnt | |
135 | of zero. called repeatedly from perl_destruct() | |
136 | until there are no SVs left. | |
137 | ||
138 | =head2 Summary | |
139 | ||
140 | Private API to rest of sv.c | |
141 | ||
142 | new_SV(), del_SV(), | |
143 | ||
144 | new_XIV(), del_XIV(), | |
145 | new_XNV(), del_XNV(), | |
146 | etc | |
147 | ||
148 | Public API: | |
149 | ||
8cf8f3d1 | 150 | sv_report_used(), sv_clean_objs(), sv_clean_all(), sv_free_arenas() |
645c22ef DM |
151 | |
152 | ||
153 | =cut | |
154 | ||
155 | ============================================================================ */ | |
156 | ||
157 | ||
51371543 | 158 | |
4561caa4 CS |
159 | /* |
160 | * "A time to plant, and a time to uproot what was planted..." | |
161 | */ | |
162 | ||
053fc874 GS |
163 | #define plant_SV(p) \ |
164 | STMT_START { \ | |
165 | SvANY(p) = (void *)PL_sv_root; \ | |
166 | SvFLAGS(p) = SVTYPEMASK; \ | |
167 | PL_sv_root = (p); \ | |
168 | --PL_sv_count; \ | |
169 | } STMT_END | |
a0d0e21e | 170 | |
fba3b22e | 171 | /* sv_mutex must be held while calling uproot_SV() */ |
053fc874 GS |
172 | #define uproot_SV(p) \ |
173 | STMT_START { \ | |
174 | (p) = PL_sv_root; \ | |
175 | PL_sv_root = (SV*)SvANY(p); \ | |
176 | ++PL_sv_count; \ | |
177 | } STMT_END | |
178 | ||
645c22ef DM |
179 | |
180 | /* new_SV(): return a new, empty SV head */ | |
181 | ||
eba0f806 DM |
182 | #ifdef DEBUG_LEAKING_SCALARS |
183 | /* provide a real function for a debugger to play with */ | |
184 | STATIC SV* | |
185 | S_new_SV(pTHX) | |
186 | { | |
187 | SV* sv; | |
188 | ||
189 | LOCK_SV_MUTEX; | |
190 | if (PL_sv_root) | |
191 | uproot_SV(sv); | |
192 | else | |
193 | sv = more_sv(); | |
194 | UNLOCK_SV_MUTEX; | |
195 | SvANY(sv) = 0; | |
196 | SvREFCNT(sv) = 1; | |
197 | SvFLAGS(sv) = 0; | |
198 | return sv; | |
199 | } | |
200 | # define new_SV(p) (p)=S_new_SV(aTHX) | |
201 | ||
202 | #else | |
203 | # define new_SV(p) \ | |
053fc874 GS |
204 | STMT_START { \ |
205 | LOCK_SV_MUTEX; \ | |
206 | if (PL_sv_root) \ | |
207 | uproot_SV(p); \ | |
208 | else \ | |
209 | (p) = more_sv(); \ | |
210 | UNLOCK_SV_MUTEX; \ | |
211 | SvANY(p) = 0; \ | |
212 | SvREFCNT(p) = 1; \ | |
213 | SvFLAGS(p) = 0; \ | |
214 | } STMT_END | |
eba0f806 | 215 | #endif |
463ee0b2 | 216 | |
645c22ef DM |
217 | |
218 | /* del_SV(): return an empty SV head to the free list */ | |
219 | ||
a0d0e21e | 220 | #ifdef DEBUGGING |
4561caa4 | 221 | |
053fc874 GS |
222 | #define del_SV(p) \ |
223 | STMT_START { \ | |
224 | LOCK_SV_MUTEX; \ | |
aea4f609 | 225 | if (DEBUG_D_TEST) \ |
053fc874 GS |
226 | del_sv(p); \ |
227 | else \ | |
228 | plant_SV(p); \ | |
229 | UNLOCK_SV_MUTEX; \ | |
230 | } STMT_END | |
a0d0e21e | 231 | |
76e3520e | 232 | STATIC void |
cea2e8a9 | 233 | S_del_sv(pTHX_ SV *p) |
463ee0b2 | 234 | { |
aea4f609 | 235 | if (DEBUG_D_TEST) { |
4633a7c4 | 236 | SV* sva; |
a0d0e21e LW |
237 | SV* sv; |
238 | SV* svend; | |
239 | int ok = 0; | |
3280af22 | 240 | for (sva = PL_sv_arenaroot; sva; sva = (SV *) SvANY(sva)) { |
4633a7c4 LW |
241 | sv = sva + 1; |
242 | svend = &sva[SvREFCNT(sva)]; | |
a0d0e21e LW |
243 | if (p >= sv && p < svend) |
244 | ok = 1; | |
245 | } | |
246 | if (!ok) { | |
0453d815 | 247 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 248 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
1d7c1841 GS |
249 | "Attempt to free non-arena SV: 0x%"UVxf, |
250 | PTR2UV(p)); | |
a0d0e21e LW |
251 | return; |
252 | } | |
253 | } | |
4561caa4 | 254 | plant_SV(p); |
463ee0b2 | 255 | } |
a0d0e21e | 256 | |
4561caa4 CS |
257 | #else /* ! DEBUGGING */ |
258 | ||
259 | #define del_SV(p) plant_SV(p) | |
260 | ||
261 | #endif /* DEBUGGING */ | |
463ee0b2 | 262 | |
645c22ef DM |
263 | |
264 | /* | |
ccfc67b7 JH |
265 | =head1 SV Manipulation Functions |
266 | ||
645c22ef DM |
267 | =for apidoc sv_add_arena |
268 | ||
269 | Given a chunk of memory, link it to the head of the list of arenas, | |
270 | and split it into a list of free SVs. | |
271 | ||
272 | =cut | |
273 | */ | |
274 | ||
4633a7c4 | 275 | void |
864dbfa3 | 276 | Perl_sv_add_arena(pTHX_ char *ptr, U32 size, U32 flags) |
463ee0b2 | 277 | { |
4633a7c4 | 278 | SV* sva = (SV*)ptr; |
463ee0b2 LW |
279 | register SV* sv; |
280 | register SV* svend; | |
14dd3ad8 | 281 | Zero(ptr, size, char); |
4633a7c4 LW |
282 | |
283 | /* The first SV in an arena isn't an SV. */ | |
3280af22 | 284 | SvANY(sva) = (void *) PL_sv_arenaroot; /* ptr to next arena */ |
4633a7c4 LW |
285 | SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */ |
286 | SvFLAGS(sva) = flags; /* FAKE if not to be freed */ | |
287 | ||
3280af22 NIS |
288 | PL_sv_arenaroot = sva; |
289 | PL_sv_root = sva + 1; | |
4633a7c4 LW |
290 | |
291 | svend = &sva[SvREFCNT(sva) - 1]; | |
292 | sv = sva + 1; | |
463ee0b2 | 293 | while (sv < svend) { |
a0d0e21e | 294 | SvANY(sv) = (void *)(SV*)(sv + 1); |
8990e307 | 295 | SvFLAGS(sv) = SVTYPEMASK; |
463ee0b2 LW |
296 | sv++; |
297 | } | |
298 | SvANY(sv) = 0; | |
4633a7c4 LW |
299 | SvFLAGS(sv) = SVTYPEMASK; |
300 | } | |
301 | ||
645c22ef DM |
302 | /* make some more SVs by adding another arena */ |
303 | ||
fba3b22e | 304 | /* sv_mutex must be held while calling more_sv() */ |
76e3520e | 305 | STATIC SV* |
cea2e8a9 | 306 | S_more_sv(pTHX) |
4633a7c4 | 307 | { |
4561caa4 CS |
308 | register SV* sv; |
309 | ||
3280af22 NIS |
310 | if (PL_nice_chunk) { |
311 | sv_add_arena(PL_nice_chunk, PL_nice_chunk_size, 0); | |
312 | PL_nice_chunk = Nullch; | |
30ad99e7 | 313 | PL_nice_chunk_size = 0; |
c07a80fd | 314 | } |
1edc1566 | 315 | else { |
316 | char *chunk; /* must use New here to match call to */ | |
317 | New(704,chunk,1008,char); /* Safefree() in sv_free_arenas() */ | |
318 | sv_add_arena(chunk, 1008, 0); | |
319 | } | |
4561caa4 CS |
320 | uproot_SV(sv); |
321 | return sv; | |
463ee0b2 LW |
322 | } |
323 | ||
ff276b08 | 324 | /* visit(): call the named function for each non-free SV in the arenas. */ |
645c22ef | 325 | |
5226ed68 | 326 | STATIC I32 |
cea2e8a9 | 327 | S_visit(pTHX_ SVFUNC_t f) |
8990e307 | 328 | { |
4633a7c4 | 329 | SV* sva; |
8990e307 LW |
330 | SV* sv; |
331 | register SV* svend; | |
5226ed68 | 332 | I32 visited = 0; |
8990e307 | 333 | |
3280af22 | 334 | for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) { |
4633a7c4 | 335 | svend = &sva[SvREFCNT(sva)]; |
4561caa4 | 336 | for (sv = sva + 1; sv < svend; ++sv) { |
f25c30a3 | 337 | if (SvTYPE(sv) != SVTYPEMASK && SvREFCNT(sv)) { |
acfe0abc | 338 | (FCALL)(aTHX_ sv); |
5226ed68 JH |
339 | ++visited; |
340 | } | |
8990e307 LW |
341 | } |
342 | } | |
5226ed68 | 343 | return visited; |
8990e307 LW |
344 | } |
345 | ||
758a08c3 JH |
346 | #ifdef DEBUGGING |
347 | ||
645c22ef DM |
348 | /* called by sv_report_used() for each live SV */ |
349 | ||
350 | static void | |
acfe0abc | 351 | do_report_used(pTHX_ SV *sv) |
645c22ef DM |
352 | { |
353 | if (SvTYPE(sv) != SVTYPEMASK) { | |
354 | PerlIO_printf(Perl_debug_log, "****\n"); | |
355 | sv_dump(sv); | |
356 | } | |
357 | } | |
758a08c3 | 358 | #endif |
645c22ef DM |
359 | |
360 | /* | |
361 | =for apidoc sv_report_used | |
362 | ||
363 | Dump the contents of all SVs not yet freed. (Debugging aid). | |
364 | ||
365 | =cut | |
366 | */ | |
367 | ||
8990e307 | 368 | void |
864dbfa3 | 369 | Perl_sv_report_used(pTHX) |
4561caa4 | 370 | { |
ff270d3a | 371 | #ifdef DEBUGGING |
0b94c7bb | 372 | visit(do_report_used); |
ff270d3a | 373 | #endif |
4561caa4 CS |
374 | } |
375 | ||
645c22ef DM |
376 | /* called by sv_clean_objs() for each live SV */ |
377 | ||
378 | static void | |
acfe0abc | 379 | do_clean_objs(pTHX_ SV *sv) |
645c22ef DM |
380 | { |
381 | SV* rv; | |
382 | ||
383 | if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) { | |
384 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv))); | |
385 | if (SvWEAKREF(sv)) { | |
386 | sv_del_backref(sv); | |
387 | SvWEAKREF_off(sv); | |
388 | SvRV(sv) = 0; | |
389 | } else { | |
390 | SvROK_off(sv); | |
391 | SvRV(sv) = 0; | |
392 | SvREFCNT_dec(rv); | |
393 | } | |
394 | } | |
395 | ||
396 | /* XXX Might want to check arrays, etc. */ | |
397 | } | |
398 | ||
399 | /* called by sv_clean_objs() for each live SV */ | |
400 | ||
401 | #ifndef DISABLE_DESTRUCTOR_KLUDGE | |
402 | static void | |
acfe0abc | 403 | do_clean_named_objs(pTHX_ SV *sv) |
645c22ef DM |
404 | { |
405 | if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) { | |
406 | if ( SvOBJECT(GvSV(sv)) || | |
407 | (GvAV(sv) && SvOBJECT(GvAV(sv))) || | |
408 | (GvHV(sv) && SvOBJECT(GvHV(sv))) || | |
409 | (GvIO(sv) && SvOBJECT(GvIO(sv))) || | |
410 | (GvCV(sv) && SvOBJECT(GvCV(sv))) ) | |
411 | { | |
412 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv))); | |
413 | SvREFCNT_dec(sv); | |
414 | } | |
415 | } | |
416 | } | |
417 | #endif | |
418 | ||
419 | /* | |
420 | =for apidoc sv_clean_objs | |
421 | ||
422 | Attempt to destroy all objects not yet freed | |
423 | ||
424 | =cut | |
425 | */ | |
426 | ||
4561caa4 | 427 | void |
864dbfa3 | 428 | Perl_sv_clean_objs(pTHX) |
4561caa4 | 429 | { |
3280af22 | 430 | PL_in_clean_objs = TRUE; |
0b94c7bb | 431 | visit(do_clean_objs); |
4561caa4 | 432 | #ifndef DISABLE_DESTRUCTOR_KLUDGE |
2d0f3c12 | 433 | /* some barnacles may yet remain, clinging to typeglobs */ |
0b94c7bb | 434 | visit(do_clean_named_objs); |
4561caa4 | 435 | #endif |
3280af22 | 436 | PL_in_clean_objs = FALSE; |
4561caa4 CS |
437 | } |
438 | ||
645c22ef DM |
439 | /* called by sv_clean_all() for each live SV */ |
440 | ||
441 | static void | |
acfe0abc | 442 | do_clean_all(pTHX_ SV *sv) |
645c22ef DM |
443 | { |
444 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) )); | |
445 | SvFLAGS(sv) |= SVf_BREAK; | |
446 | SvREFCNT_dec(sv); | |
447 | } | |
448 | ||
449 | /* | |
450 | =for apidoc sv_clean_all | |
451 | ||
452 | Decrement the refcnt of each remaining SV, possibly triggering a | |
453 | cleanup. This function may have to be called multiple times to free | |
ff276b08 | 454 | SVs which are in complex self-referential hierarchies. |
645c22ef DM |
455 | |
456 | =cut | |
457 | */ | |
458 | ||
5226ed68 | 459 | I32 |
864dbfa3 | 460 | Perl_sv_clean_all(pTHX) |
8990e307 | 461 | { |
5226ed68 | 462 | I32 cleaned; |
3280af22 | 463 | PL_in_clean_all = TRUE; |
5226ed68 | 464 | cleaned = visit(do_clean_all); |
3280af22 | 465 | PL_in_clean_all = FALSE; |
5226ed68 | 466 | return cleaned; |
8990e307 | 467 | } |
463ee0b2 | 468 | |
645c22ef DM |
469 | /* |
470 | =for apidoc sv_free_arenas | |
471 | ||
472 | Deallocate the memory used by all arenas. Note that all the individual SV | |
473 | heads and bodies within the arenas must already have been freed. | |
474 | ||
475 | =cut | |
476 | */ | |
477 | ||
4633a7c4 | 478 | void |
864dbfa3 | 479 | Perl_sv_free_arenas(pTHX) |
4633a7c4 LW |
480 | { |
481 | SV* sva; | |
482 | SV* svanext; | |
612f20c3 | 483 | XPV *arena, *arenanext; |
4633a7c4 LW |
484 | |
485 | /* Free arenas here, but be careful about fake ones. (We assume | |
486 | contiguity of the fake ones with the corresponding real ones.) */ | |
487 | ||
3280af22 | 488 | for (sva = PL_sv_arenaroot; sva; sva = svanext) { |
4633a7c4 LW |
489 | svanext = (SV*) SvANY(sva); |
490 | while (svanext && SvFAKE(svanext)) | |
491 | svanext = (SV*) SvANY(svanext); | |
492 | ||
493 | if (!SvFAKE(sva)) | |
1edc1566 | 494 | Safefree((void *)sva); |
4633a7c4 | 495 | } |
5f05dabc | 496 | |
612f20c3 GS |
497 | for (arena = PL_xiv_arenaroot; arena; arena = arenanext) { |
498 | arenanext = (XPV*)arena->xpv_pv; | |
499 | Safefree(arena); | |
500 | } | |
501 | PL_xiv_arenaroot = 0; | |
502 | ||
503 | for (arena = PL_xnv_arenaroot; arena; arena = arenanext) { | |
504 | arenanext = (XPV*)arena->xpv_pv; | |
505 | Safefree(arena); | |
506 | } | |
507 | PL_xnv_arenaroot = 0; | |
508 | ||
509 | for (arena = PL_xrv_arenaroot; arena; arena = arenanext) { | |
510 | arenanext = (XPV*)arena->xpv_pv; | |
511 | Safefree(arena); | |
512 | } | |
513 | PL_xrv_arenaroot = 0; | |
514 | ||
515 | for (arena = PL_xpv_arenaroot; arena; arena = arenanext) { | |
516 | arenanext = (XPV*)arena->xpv_pv; | |
517 | Safefree(arena); | |
518 | } | |
519 | PL_xpv_arenaroot = 0; | |
520 | ||
521 | for (arena = (XPV*)PL_xpviv_arenaroot; arena; arena = arenanext) { | |
522 | arenanext = (XPV*)arena->xpv_pv; | |
523 | Safefree(arena); | |
524 | } | |
525 | PL_xpviv_arenaroot = 0; | |
526 | ||
527 | for (arena = (XPV*)PL_xpvnv_arenaroot; arena; arena = arenanext) { | |
528 | arenanext = (XPV*)arena->xpv_pv; | |
529 | Safefree(arena); | |
530 | } | |
531 | PL_xpvnv_arenaroot = 0; | |
532 | ||
533 | for (arena = (XPV*)PL_xpvcv_arenaroot; arena; arena = arenanext) { | |
534 | arenanext = (XPV*)arena->xpv_pv; | |
535 | Safefree(arena); | |
536 | } | |
537 | PL_xpvcv_arenaroot = 0; | |
538 | ||
539 | for (arena = (XPV*)PL_xpvav_arenaroot; arena; arena = arenanext) { | |
540 | arenanext = (XPV*)arena->xpv_pv; | |
541 | Safefree(arena); | |
542 | } | |
543 | PL_xpvav_arenaroot = 0; | |
544 | ||
545 | for (arena = (XPV*)PL_xpvhv_arenaroot; arena; arena = arenanext) { | |
546 | arenanext = (XPV*)arena->xpv_pv; | |
547 | Safefree(arena); | |
548 | } | |
549 | PL_xpvhv_arenaroot = 0; | |
550 | ||
551 | for (arena = (XPV*)PL_xpvmg_arenaroot; arena; arena = arenanext) { | |
552 | arenanext = (XPV*)arena->xpv_pv; | |
553 | Safefree(arena); | |
554 | } | |
555 | PL_xpvmg_arenaroot = 0; | |
556 | ||
557 | for (arena = (XPV*)PL_xpvlv_arenaroot; arena; arena = arenanext) { | |
558 | arenanext = (XPV*)arena->xpv_pv; | |
559 | Safefree(arena); | |
560 | } | |
561 | PL_xpvlv_arenaroot = 0; | |
562 | ||
563 | for (arena = (XPV*)PL_xpvbm_arenaroot; arena; arena = arenanext) { | |
564 | arenanext = (XPV*)arena->xpv_pv; | |
565 | Safefree(arena); | |
566 | } | |
567 | PL_xpvbm_arenaroot = 0; | |
568 | ||
569 | for (arena = (XPV*)PL_he_arenaroot; arena; arena = arenanext) { | |
570 | arenanext = (XPV*)arena->xpv_pv; | |
571 | Safefree(arena); | |
572 | } | |
573 | PL_he_arenaroot = 0; | |
574 | ||
3280af22 NIS |
575 | if (PL_nice_chunk) |
576 | Safefree(PL_nice_chunk); | |
577 | PL_nice_chunk = Nullch; | |
578 | PL_nice_chunk_size = 0; | |
579 | PL_sv_arenaroot = 0; | |
580 | PL_sv_root = 0; | |
4633a7c4 LW |
581 | } |
582 | ||
645c22ef DM |
583 | /* |
584 | =for apidoc report_uninit | |
585 | ||
586 | Print appropriate "Use of uninitialized variable" warning | |
587 | ||
588 | =cut | |
589 | */ | |
590 | ||
1d7c1841 GS |
591 | void |
592 | Perl_report_uninit(pTHX) | |
593 | { | |
594 | if (PL_op) | |
9014280d | 595 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, |
53e06cf0 | 596 | " in ", OP_DESC(PL_op)); |
1d7c1841 | 597 | else |
9014280d | 598 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, "", ""); |
1d7c1841 GS |
599 | } |
600 | ||
645c22ef DM |
601 | /* grab a new IV body from the free list, allocating more if necessary */ |
602 | ||
76e3520e | 603 | STATIC XPVIV* |
cea2e8a9 | 604 | S_new_xiv(pTHX) |
463ee0b2 | 605 | { |
ea7c11a3 | 606 | IV* xiv; |
cbe51380 GS |
607 | LOCK_SV_MUTEX; |
608 | if (!PL_xiv_root) | |
609 | more_xiv(); | |
610 | xiv = PL_xiv_root; | |
611 | /* | |
612 | * See comment in more_xiv() -- RAM. | |
613 | */ | |
614 | PL_xiv_root = *(IV**)xiv; | |
615 | UNLOCK_SV_MUTEX; | |
616 | return (XPVIV*)((char*)xiv - STRUCT_OFFSET(XPVIV, xiv_iv)); | |
463ee0b2 LW |
617 | } |
618 | ||
645c22ef DM |
619 | /* return an IV body to the free list */ |
620 | ||
76e3520e | 621 | STATIC void |
cea2e8a9 | 622 | S_del_xiv(pTHX_ XPVIV *p) |
463ee0b2 | 623 | { |
23e6a22f | 624 | IV* xiv = (IV*)((char*)(p) + STRUCT_OFFSET(XPVIV, xiv_iv)); |
cbe51380 | 625 | LOCK_SV_MUTEX; |
3280af22 NIS |
626 | *(IV**)xiv = PL_xiv_root; |
627 | PL_xiv_root = xiv; | |
cbe51380 | 628 | UNLOCK_SV_MUTEX; |
463ee0b2 LW |
629 | } |
630 | ||
645c22ef DM |
631 | /* allocate another arena's worth of IV bodies */ |
632 | ||
cbe51380 | 633 | STATIC void |
cea2e8a9 | 634 | S_more_xiv(pTHX) |
463ee0b2 | 635 | { |
ea7c11a3 SM |
636 | register IV* xiv; |
637 | register IV* xivend; | |
8c52afec IZ |
638 | XPV* ptr; |
639 | New(705, ptr, 1008/sizeof(XPV), XPV); | |
645c22ef | 640 | ptr->xpv_pv = (char*)PL_xiv_arenaroot; /* linked list of xiv arenas */ |
3280af22 | 641 | PL_xiv_arenaroot = ptr; /* to keep Purify happy */ |
a0d0e21e | 642 | |
ea7c11a3 SM |
643 | xiv = (IV*) ptr; |
644 | xivend = &xiv[1008 / sizeof(IV) - 1]; | |
645c22ef | 645 | xiv += (sizeof(XPV) - 1) / sizeof(IV) + 1; /* fudge by size of XPV */ |
3280af22 | 646 | PL_xiv_root = xiv; |
463ee0b2 | 647 | while (xiv < xivend) { |
ea7c11a3 | 648 | *(IV**)xiv = (IV *)(xiv + 1); |
463ee0b2 LW |
649 | xiv++; |
650 | } | |
ea7c11a3 | 651 | *(IV**)xiv = 0; |
463ee0b2 LW |
652 | } |
653 | ||
645c22ef DM |
654 | /* grab a new NV body from the free list, allocating more if necessary */ |
655 | ||
76e3520e | 656 | STATIC XPVNV* |
cea2e8a9 | 657 | S_new_xnv(pTHX) |
463ee0b2 | 658 | { |
65202027 | 659 | NV* xnv; |
cbe51380 GS |
660 | LOCK_SV_MUTEX; |
661 | if (!PL_xnv_root) | |
662 | more_xnv(); | |
663 | xnv = PL_xnv_root; | |
65202027 | 664 | PL_xnv_root = *(NV**)xnv; |
cbe51380 GS |
665 | UNLOCK_SV_MUTEX; |
666 | return (XPVNV*)((char*)xnv - STRUCT_OFFSET(XPVNV, xnv_nv)); | |
463ee0b2 LW |
667 | } |
668 | ||
645c22ef DM |
669 | /* return an NV body to the free list */ |
670 | ||
76e3520e | 671 | STATIC void |
cea2e8a9 | 672 | S_del_xnv(pTHX_ XPVNV *p) |
463ee0b2 | 673 | { |
65202027 | 674 | NV* xnv = (NV*)((char*)(p) + STRUCT_OFFSET(XPVNV, xnv_nv)); |
cbe51380 | 675 | LOCK_SV_MUTEX; |
65202027 | 676 | *(NV**)xnv = PL_xnv_root; |
3280af22 | 677 | PL_xnv_root = xnv; |
cbe51380 | 678 | UNLOCK_SV_MUTEX; |
463ee0b2 LW |
679 | } |
680 | ||
645c22ef DM |
681 | /* allocate another arena's worth of NV bodies */ |
682 | ||
cbe51380 | 683 | STATIC void |
cea2e8a9 | 684 | S_more_xnv(pTHX) |
463ee0b2 | 685 | { |
65202027 DS |
686 | register NV* xnv; |
687 | register NV* xnvend; | |
612f20c3 GS |
688 | XPV *ptr; |
689 | New(711, ptr, 1008/sizeof(XPV), XPV); | |
690 | ptr->xpv_pv = (char*)PL_xnv_arenaroot; | |
691 | PL_xnv_arenaroot = ptr; | |
692 | ||
693 | xnv = (NV*) ptr; | |
65202027 DS |
694 | xnvend = &xnv[1008 / sizeof(NV) - 1]; |
695 | xnv += (sizeof(XPVIV) - 1) / sizeof(NV) + 1; /* fudge by sizeof XPVIV */ | |
3280af22 | 696 | PL_xnv_root = xnv; |
463ee0b2 | 697 | while (xnv < xnvend) { |
65202027 | 698 | *(NV**)xnv = (NV*)(xnv + 1); |
463ee0b2 LW |
699 | xnv++; |
700 | } | |
65202027 | 701 | *(NV**)xnv = 0; |
463ee0b2 LW |
702 | } |
703 | ||
645c22ef DM |
704 | /* grab a new struct xrv from the free list, allocating more if necessary */ |
705 | ||
76e3520e | 706 | STATIC XRV* |
cea2e8a9 | 707 | S_new_xrv(pTHX) |
ed6116ce LW |
708 | { |
709 | XRV* xrv; | |
cbe51380 GS |
710 | LOCK_SV_MUTEX; |
711 | if (!PL_xrv_root) | |
712 | more_xrv(); | |
713 | xrv = PL_xrv_root; | |
714 | PL_xrv_root = (XRV*)xrv->xrv_rv; | |
715 | UNLOCK_SV_MUTEX; | |
716 | return xrv; | |
ed6116ce LW |
717 | } |
718 | ||
645c22ef DM |
719 | /* return a struct xrv to the free list */ |
720 | ||
76e3520e | 721 | STATIC void |
cea2e8a9 | 722 | S_del_xrv(pTHX_ XRV *p) |
ed6116ce | 723 | { |
cbe51380 | 724 | LOCK_SV_MUTEX; |
3280af22 NIS |
725 | p->xrv_rv = (SV*)PL_xrv_root; |
726 | PL_xrv_root = p; | |
cbe51380 | 727 | UNLOCK_SV_MUTEX; |
ed6116ce LW |
728 | } |
729 | ||
645c22ef DM |
730 | /* allocate another arena's worth of struct xrv */ |
731 | ||
cbe51380 | 732 | STATIC void |
cea2e8a9 | 733 | S_more_xrv(pTHX) |
ed6116ce | 734 | { |
ed6116ce LW |
735 | register XRV* xrv; |
736 | register XRV* xrvend; | |
612f20c3 GS |
737 | XPV *ptr; |
738 | New(712, ptr, 1008/sizeof(XPV), XPV); | |
739 | ptr->xpv_pv = (char*)PL_xrv_arenaroot; | |
740 | PL_xrv_arenaroot = ptr; | |
741 | ||
742 | xrv = (XRV*) ptr; | |
ed6116ce | 743 | xrvend = &xrv[1008 / sizeof(XRV) - 1]; |
612f20c3 GS |
744 | xrv += (sizeof(XPV) - 1) / sizeof(XRV) + 1; |
745 | PL_xrv_root = xrv; | |
ed6116ce LW |
746 | while (xrv < xrvend) { |
747 | xrv->xrv_rv = (SV*)(xrv + 1); | |
748 | xrv++; | |
749 | } | |
750 | xrv->xrv_rv = 0; | |
ed6116ce LW |
751 | } |
752 | ||
645c22ef DM |
753 | /* grab a new struct xpv from the free list, allocating more if necessary */ |
754 | ||
76e3520e | 755 | STATIC XPV* |
cea2e8a9 | 756 | S_new_xpv(pTHX) |
463ee0b2 LW |
757 | { |
758 | XPV* xpv; | |
cbe51380 GS |
759 | LOCK_SV_MUTEX; |
760 | if (!PL_xpv_root) | |
761 | more_xpv(); | |
762 | xpv = PL_xpv_root; | |
763 | PL_xpv_root = (XPV*)xpv->xpv_pv; | |
764 | UNLOCK_SV_MUTEX; | |
765 | return xpv; | |
463ee0b2 LW |
766 | } |
767 | ||
645c22ef DM |
768 | /* return a struct xpv to the free list */ |
769 | ||
76e3520e | 770 | STATIC void |
cea2e8a9 | 771 | S_del_xpv(pTHX_ XPV *p) |
463ee0b2 | 772 | { |
cbe51380 | 773 | LOCK_SV_MUTEX; |
3280af22 NIS |
774 | p->xpv_pv = (char*)PL_xpv_root; |
775 | PL_xpv_root = p; | |
cbe51380 | 776 | UNLOCK_SV_MUTEX; |
463ee0b2 LW |
777 | } |
778 | ||
645c22ef DM |
779 | /* allocate another arena's worth of struct xpv */ |
780 | ||
cbe51380 | 781 | STATIC void |
cea2e8a9 | 782 | S_more_xpv(pTHX) |
463ee0b2 | 783 | { |
463ee0b2 LW |
784 | register XPV* xpv; |
785 | register XPV* xpvend; | |
612f20c3 GS |
786 | New(713, xpv, 1008/sizeof(XPV), XPV); |
787 | xpv->xpv_pv = (char*)PL_xpv_arenaroot; | |
788 | PL_xpv_arenaroot = xpv; | |
789 | ||
463ee0b2 | 790 | xpvend = &xpv[1008 / sizeof(XPV) - 1]; |
612f20c3 | 791 | PL_xpv_root = ++xpv; |
463ee0b2 LW |
792 | while (xpv < xpvend) { |
793 | xpv->xpv_pv = (char*)(xpv + 1); | |
794 | xpv++; | |
795 | } | |
796 | xpv->xpv_pv = 0; | |
463ee0b2 LW |
797 | } |
798 | ||
645c22ef DM |
799 | /* grab a new struct xpviv from the free list, allocating more if necessary */ |
800 | ||
932e9ff9 VB |
801 | STATIC XPVIV* |
802 | S_new_xpviv(pTHX) | |
803 | { | |
804 | XPVIV* xpviv; | |
805 | LOCK_SV_MUTEX; | |
806 | if (!PL_xpviv_root) | |
807 | more_xpviv(); | |
808 | xpviv = PL_xpviv_root; | |
809 | PL_xpviv_root = (XPVIV*)xpviv->xpv_pv; | |
810 | UNLOCK_SV_MUTEX; | |
811 | return xpviv; | |
812 | } | |
813 | ||
645c22ef DM |
814 | /* return a struct xpviv to the free list */ |
815 | ||
932e9ff9 VB |
816 | STATIC void |
817 | S_del_xpviv(pTHX_ XPVIV *p) | |
818 | { | |
819 | LOCK_SV_MUTEX; | |
820 | p->xpv_pv = (char*)PL_xpviv_root; | |
821 | PL_xpviv_root = p; | |
822 | UNLOCK_SV_MUTEX; | |
823 | } | |
824 | ||
645c22ef DM |
825 | /* allocate another arena's worth of struct xpviv */ |
826 | ||
932e9ff9 VB |
827 | STATIC void |
828 | S_more_xpviv(pTHX) | |
829 | { | |
830 | register XPVIV* xpviv; | |
831 | register XPVIV* xpvivend; | |
612f20c3 GS |
832 | New(714, xpviv, 1008/sizeof(XPVIV), XPVIV); |
833 | xpviv->xpv_pv = (char*)PL_xpviv_arenaroot; | |
834 | PL_xpviv_arenaroot = xpviv; | |
835 | ||
932e9ff9 | 836 | xpvivend = &xpviv[1008 / sizeof(XPVIV) - 1]; |
612f20c3 | 837 | PL_xpviv_root = ++xpviv; |
932e9ff9 VB |
838 | while (xpviv < xpvivend) { |
839 | xpviv->xpv_pv = (char*)(xpviv + 1); | |
840 | xpviv++; | |
841 | } | |
842 | xpviv->xpv_pv = 0; | |
843 | } | |
844 | ||
645c22ef DM |
845 | /* grab a new struct xpvnv from the free list, allocating more if necessary */ |
846 | ||
932e9ff9 VB |
847 | STATIC XPVNV* |
848 | S_new_xpvnv(pTHX) | |
849 | { | |
850 | XPVNV* xpvnv; | |
851 | LOCK_SV_MUTEX; | |
852 | if (!PL_xpvnv_root) | |
853 | more_xpvnv(); | |
854 | xpvnv = PL_xpvnv_root; | |
855 | PL_xpvnv_root = (XPVNV*)xpvnv->xpv_pv; | |
856 | UNLOCK_SV_MUTEX; | |
857 | return xpvnv; | |
858 | } | |
859 | ||
645c22ef DM |
860 | /* return a struct xpvnv to the free list */ |
861 | ||
932e9ff9 VB |
862 | STATIC void |
863 | S_del_xpvnv(pTHX_ XPVNV *p) | |
864 | { | |
865 | LOCK_SV_MUTEX; | |
866 | p->xpv_pv = (char*)PL_xpvnv_root; | |
867 | PL_xpvnv_root = p; | |
868 | UNLOCK_SV_MUTEX; | |
869 | } | |
870 | ||
645c22ef DM |
871 | /* allocate another arena's worth of struct xpvnv */ |
872 | ||
932e9ff9 VB |
873 | STATIC void |
874 | S_more_xpvnv(pTHX) | |
875 | { | |
876 | register XPVNV* xpvnv; | |
877 | register XPVNV* xpvnvend; | |
612f20c3 GS |
878 | New(715, xpvnv, 1008/sizeof(XPVNV), XPVNV); |
879 | xpvnv->xpv_pv = (char*)PL_xpvnv_arenaroot; | |
880 | PL_xpvnv_arenaroot = xpvnv; | |
881 | ||
932e9ff9 | 882 | xpvnvend = &xpvnv[1008 / sizeof(XPVNV) - 1]; |
612f20c3 | 883 | PL_xpvnv_root = ++xpvnv; |
932e9ff9 VB |
884 | while (xpvnv < xpvnvend) { |
885 | xpvnv->xpv_pv = (char*)(xpvnv + 1); | |
886 | xpvnv++; | |
887 | } | |
888 | xpvnv->xpv_pv = 0; | |
889 | } | |
890 | ||
645c22ef DM |
891 | /* grab a new struct xpvcv from the free list, allocating more if necessary */ |
892 | ||
932e9ff9 VB |
893 | STATIC XPVCV* |
894 | S_new_xpvcv(pTHX) | |
895 | { | |
896 | XPVCV* xpvcv; | |
897 | LOCK_SV_MUTEX; | |
898 | if (!PL_xpvcv_root) | |
899 | more_xpvcv(); | |
900 | xpvcv = PL_xpvcv_root; | |
901 | PL_xpvcv_root = (XPVCV*)xpvcv->xpv_pv; | |
902 | UNLOCK_SV_MUTEX; | |
903 | return xpvcv; | |
904 | } | |
905 | ||
645c22ef DM |
906 | /* return a struct xpvcv to the free list */ |
907 | ||
932e9ff9 VB |
908 | STATIC void |
909 | S_del_xpvcv(pTHX_ XPVCV *p) | |
910 | { | |
911 | LOCK_SV_MUTEX; | |
912 | p->xpv_pv = (char*)PL_xpvcv_root; | |
913 | PL_xpvcv_root = p; | |
914 | UNLOCK_SV_MUTEX; | |
915 | } | |
916 | ||
645c22ef DM |
917 | /* allocate another arena's worth of struct xpvcv */ |
918 | ||
932e9ff9 VB |
919 | STATIC void |
920 | S_more_xpvcv(pTHX) | |
921 | { | |
922 | register XPVCV* xpvcv; | |
923 | register XPVCV* xpvcvend; | |
612f20c3 GS |
924 | New(716, xpvcv, 1008/sizeof(XPVCV), XPVCV); |
925 | xpvcv->xpv_pv = (char*)PL_xpvcv_arenaroot; | |
926 | PL_xpvcv_arenaroot = xpvcv; | |
927 | ||
932e9ff9 | 928 | xpvcvend = &xpvcv[1008 / sizeof(XPVCV) - 1]; |
612f20c3 | 929 | PL_xpvcv_root = ++xpvcv; |
932e9ff9 VB |
930 | while (xpvcv < xpvcvend) { |
931 | xpvcv->xpv_pv = (char*)(xpvcv + 1); | |
932 | xpvcv++; | |
933 | } | |
934 | xpvcv->xpv_pv = 0; | |
935 | } | |
936 | ||
645c22ef DM |
937 | /* grab a new struct xpvav from the free list, allocating more if necessary */ |
938 | ||
932e9ff9 VB |
939 | STATIC XPVAV* |
940 | S_new_xpvav(pTHX) | |
941 | { | |
942 | XPVAV* xpvav; | |
943 | LOCK_SV_MUTEX; | |
944 | if (!PL_xpvav_root) | |
945 | more_xpvav(); | |
946 | xpvav = PL_xpvav_root; | |
947 | PL_xpvav_root = (XPVAV*)xpvav->xav_array; | |
948 | UNLOCK_SV_MUTEX; | |
949 | return xpvav; | |
950 | } | |
951 | ||
645c22ef DM |
952 | /* return a struct xpvav to the free list */ |
953 | ||
932e9ff9 VB |
954 | STATIC void |
955 | S_del_xpvav(pTHX_ XPVAV *p) | |
956 | { | |
957 | LOCK_SV_MUTEX; | |
958 | p->xav_array = (char*)PL_xpvav_root; | |
959 | PL_xpvav_root = p; | |
960 | UNLOCK_SV_MUTEX; | |
961 | } | |
962 | ||
645c22ef DM |
963 | /* allocate another arena's worth of struct xpvav */ |
964 | ||
932e9ff9 VB |
965 | STATIC void |
966 | S_more_xpvav(pTHX) | |
967 | { | |
968 | register XPVAV* xpvav; | |
969 | register XPVAV* xpvavend; | |
612f20c3 GS |
970 | New(717, xpvav, 1008/sizeof(XPVAV), XPVAV); |
971 | xpvav->xav_array = (char*)PL_xpvav_arenaroot; | |
972 | PL_xpvav_arenaroot = xpvav; | |
973 | ||
932e9ff9 | 974 | xpvavend = &xpvav[1008 / sizeof(XPVAV) - 1]; |
612f20c3 | 975 | PL_xpvav_root = ++xpvav; |
932e9ff9 VB |
976 | while (xpvav < xpvavend) { |
977 | xpvav->xav_array = (char*)(xpvav + 1); | |
978 | xpvav++; | |
979 | } | |
980 | xpvav->xav_array = 0; | |
981 | } | |
982 | ||
645c22ef DM |
983 | /* grab a new struct xpvhv from the free list, allocating more if necessary */ |
984 | ||
932e9ff9 VB |
985 | STATIC XPVHV* |
986 | S_new_xpvhv(pTHX) | |
987 | { | |
988 | XPVHV* xpvhv; | |
989 | LOCK_SV_MUTEX; | |
990 | if (!PL_xpvhv_root) | |
991 | more_xpvhv(); | |
992 | xpvhv = PL_xpvhv_root; | |
993 | PL_xpvhv_root = (XPVHV*)xpvhv->xhv_array; | |
994 | UNLOCK_SV_MUTEX; | |
995 | return xpvhv; | |
996 | } | |
997 | ||
645c22ef DM |
998 | /* return a struct xpvhv to the free list */ |
999 | ||
932e9ff9 VB |
1000 | STATIC void |
1001 | S_del_xpvhv(pTHX_ XPVHV *p) | |
1002 | { | |
1003 | LOCK_SV_MUTEX; | |
1004 | p->xhv_array = (char*)PL_xpvhv_root; | |
1005 | PL_xpvhv_root = p; | |
1006 | UNLOCK_SV_MUTEX; | |
1007 | } | |
1008 | ||
645c22ef DM |
1009 | /* allocate another arena's worth of struct xpvhv */ |
1010 | ||
932e9ff9 VB |
1011 | STATIC void |
1012 | S_more_xpvhv(pTHX) | |
1013 | { | |
1014 | register XPVHV* xpvhv; | |
1015 | register XPVHV* xpvhvend; | |
612f20c3 GS |
1016 | New(718, xpvhv, 1008/sizeof(XPVHV), XPVHV); |
1017 | xpvhv->xhv_array = (char*)PL_xpvhv_arenaroot; | |
1018 | PL_xpvhv_arenaroot = xpvhv; | |
1019 | ||
932e9ff9 | 1020 | xpvhvend = &xpvhv[1008 / sizeof(XPVHV) - 1]; |
612f20c3 | 1021 | PL_xpvhv_root = ++xpvhv; |
932e9ff9 VB |
1022 | while (xpvhv < xpvhvend) { |
1023 | xpvhv->xhv_array = (char*)(xpvhv + 1); | |
1024 | xpvhv++; | |
1025 | } | |
1026 | xpvhv->xhv_array = 0; | |
1027 | } | |
1028 | ||
645c22ef DM |
1029 | /* grab a new struct xpvmg from the free list, allocating more if necessary */ |
1030 | ||
932e9ff9 VB |
1031 | STATIC XPVMG* |
1032 | S_new_xpvmg(pTHX) | |
1033 | { | |
1034 | XPVMG* xpvmg; | |
1035 | LOCK_SV_MUTEX; | |
1036 | if (!PL_xpvmg_root) | |
1037 | more_xpvmg(); | |
1038 | xpvmg = PL_xpvmg_root; | |
1039 | PL_xpvmg_root = (XPVMG*)xpvmg->xpv_pv; | |
1040 | UNLOCK_SV_MUTEX; | |
1041 | return xpvmg; | |
1042 | } | |
1043 | ||
645c22ef DM |
1044 | /* return a struct xpvmg to the free list */ |
1045 | ||
932e9ff9 VB |
1046 | STATIC void |
1047 | S_del_xpvmg(pTHX_ XPVMG *p) | |
1048 | { | |
1049 | LOCK_SV_MUTEX; | |
1050 | p->xpv_pv = (char*)PL_xpvmg_root; | |
1051 | PL_xpvmg_root = p; | |
1052 | UNLOCK_SV_MUTEX; | |
1053 | } | |
1054 | ||
645c22ef DM |
1055 | /* allocate another arena's worth of struct xpvmg */ |
1056 | ||
932e9ff9 VB |
1057 | STATIC void |
1058 | S_more_xpvmg(pTHX) | |
1059 | { | |
1060 | register XPVMG* xpvmg; | |
1061 | register XPVMG* xpvmgend; | |
612f20c3 GS |
1062 | New(719, xpvmg, 1008/sizeof(XPVMG), XPVMG); |
1063 | xpvmg->xpv_pv = (char*)PL_xpvmg_arenaroot; | |
1064 | PL_xpvmg_arenaroot = xpvmg; | |
1065 | ||
932e9ff9 | 1066 | xpvmgend = &xpvmg[1008 / sizeof(XPVMG) - 1]; |
612f20c3 | 1067 | PL_xpvmg_root = ++xpvmg; |
932e9ff9 VB |
1068 | while (xpvmg < xpvmgend) { |
1069 | xpvmg->xpv_pv = (char*)(xpvmg + 1); | |
1070 | xpvmg++; | |
1071 | } | |
1072 | xpvmg->xpv_pv = 0; | |
1073 | } | |
1074 | ||
645c22ef DM |
1075 | /* grab a new struct xpvlv from the free list, allocating more if necessary */ |
1076 | ||
932e9ff9 VB |
1077 | STATIC XPVLV* |
1078 | S_new_xpvlv(pTHX) | |
1079 | { | |
1080 | XPVLV* xpvlv; | |
1081 | LOCK_SV_MUTEX; | |
1082 | if (!PL_xpvlv_root) | |
1083 | more_xpvlv(); | |
1084 | xpvlv = PL_xpvlv_root; | |
1085 | PL_xpvlv_root = (XPVLV*)xpvlv->xpv_pv; | |
1086 | UNLOCK_SV_MUTEX; | |
1087 | return xpvlv; | |
1088 | } | |
1089 | ||
645c22ef DM |
1090 | /* return a struct xpvlv to the free list */ |
1091 | ||
932e9ff9 VB |
1092 | STATIC void |
1093 | S_del_xpvlv(pTHX_ XPVLV *p) | |
1094 | { | |
1095 | LOCK_SV_MUTEX; | |
1096 | p->xpv_pv = (char*)PL_xpvlv_root; | |
1097 | PL_xpvlv_root = p; | |
1098 | UNLOCK_SV_MUTEX; | |
1099 | } | |
1100 | ||
645c22ef DM |
1101 | /* allocate another arena's worth of struct xpvlv */ |
1102 | ||
932e9ff9 VB |
1103 | STATIC void |
1104 | S_more_xpvlv(pTHX) | |
1105 | { | |
1106 | register XPVLV* xpvlv; | |
1107 | register XPVLV* xpvlvend; | |
612f20c3 GS |
1108 | New(720, xpvlv, 1008/sizeof(XPVLV), XPVLV); |
1109 | xpvlv->xpv_pv = (char*)PL_xpvlv_arenaroot; | |
1110 | PL_xpvlv_arenaroot = xpvlv; | |
1111 | ||
932e9ff9 | 1112 | xpvlvend = &xpvlv[1008 / sizeof(XPVLV) - 1]; |
612f20c3 | 1113 | PL_xpvlv_root = ++xpvlv; |
932e9ff9 VB |
1114 | while (xpvlv < xpvlvend) { |
1115 | xpvlv->xpv_pv = (char*)(xpvlv + 1); | |
1116 | xpvlv++; | |
1117 | } | |
1118 | xpvlv->xpv_pv = 0; | |
1119 | } | |
1120 | ||
645c22ef DM |
1121 | /* grab a new struct xpvbm from the free list, allocating more if necessary */ |
1122 | ||
932e9ff9 VB |
1123 | STATIC XPVBM* |
1124 | S_new_xpvbm(pTHX) | |
1125 | { | |
1126 | XPVBM* xpvbm; | |
1127 | LOCK_SV_MUTEX; | |
1128 | if (!PL_xpvbm_root) | |
1129 | more_xpvbm(); | |
1130 | xpvbm = PL_xpvbm_root; | |
1131 | PL_xpvbm_root = (XPVBM*)xpvbm->xpv_pv; | |
1132 | UNLOCK_SV_MUTEX; | |
1133 | return xpvbm; | |
1134 | } | |
1135 | ||
645c22ef DM |
1136 | /* return a struct xpvbm to the free list */ |
1137 | ||
932e9ff9 VB |
1138 | STATIC void |
1139 | S_del_xpvbm(pTHX_ XPVBM *p) | |
1140 | { | |
1141 | LOCK_SV_MUTEX; | |
1142 | p->xpv_pv = (char*)PL_xpvbm_root; | |
1143 | PL_xpvbm_root = p; | |
1144 | UNLOCK_SV_MUTEX; | |
1145 | } | |
1146 | ||
645c22ef DM |
1147 | /* allocate another arena's worth of struct xpvbm */ |
1148 | ||
932e9ff9 VB |
1149 | STATIC void |
1150 | S_more_xpvbm(pTHX) | |
1151 | { | |
1152 | register XPVBM* xpvbm; | |
1153 | register XPVBM* xpvbmend; | |
612f20c3 GS |
1154 | New(721, xpvbm, 1008/sizeof(XPVBM), XPVBM); |
1155 | xpvbm->xpv_pv = (char*)PL_xpvbm_arenaroot; | |
1156 | PL_xpvbm_arenaroot = xpvbm; | |
1157 | ||
932e9ff9 | 1158 | xpvbmend = &xpvbm[1008 / sizeof(XPVBM) - 1]; |
612f20c3 | 1159 | PL_xpvbm_root = ++xpvbm; |
932e9ff9 VB |
1160 | while (xpvbm < xpvbmend) { |
1161 | xpvbm->xpv_pv = (char*)(xpvbm + 1); | |
1162 | xpvbm++; | |
1163 | } | |
1164 | xpvbm->xpv_pv = 0; | |
1165 | } | |
1166 | ||
7bab3ede MB |
1167 | #define my_safemalloc(s) (void*)safemalloc(s) |
1168 | #define my_safefree(p) safefree((char*)p) | |
463ee0b2 | 1169 | |
d33b2eba | 1170 | #ifdef PURIFY |
463ee0b2 | 1171 | |
d33b2eba GS |
1172 | #define new_XIV() my_safemalloc(sizeof(XPVIV)) |
1173 | #define del_XIV(p) my_safefree(p) | |
ed6116ce | 1174 | |
d33b2eba GS |
1175 | #define new_XNV() my_safemalloc(sizeof(XPVNV)) |
1176 | #define del_XNV(p) my_safefree(p) | |
463ee0b2 | 1177 | |
d33b2eba GS |
1178 | #define new_XRV() my_safemalloc(sizeof(XRV)) |
1179 | #define del_XRV(p) my_safefree(p) | |
8c52afec | 1180 | |
d33b2eba GS |
1181 | #define new_XPV() my_safemalloc(sizeof(XPV)) |
1182 | #define del_XPV(p) my_safefree(p) | |
9b94d1dd | 1183 | |
d33b2eba GS |
1184 | #define new_XPVIV() my_safemalloc(sizeof(XPVIV)) |
1185 | #define del_XPVIV(p) my_safefree(p) | |
932e9ff9 | 1186 | |
d33b2eba GS |
1187 | #define new_XPVNV() my_safemalloc(sizeof(XPVNV)) |
1188 | #define del_XPVNV(p) my_safefree(p) | |
932e9ff9 | 1189 | |
d33b2eba GS |
1190 | #define new_XPVCV() my_safemalloc(sizeof(XPVCV)) |
1191 | #define del_XPVCV(p) my_safefree(p) | |
932e9ff9 | 1192 | |
d33b2eba GS |
1193 | #define new_XPVAV() my_safemalloc(sizeof(XPVAV)) |
1194 | #define del_XPVAV(p) my_safefree(p) | |
1195 | ||
1196 | #define new_XPVHV() my_safemalloc(sizeof(XPVHV)) | |
1197 | #define del_XPVHV(p) my_safefree(p) | |
1c846c1f | 1198 | |
d33b2eba GS |
1199 | #define new_XPVMG() my_safemalloc(sizeof(XPVMG)) |
1200 | #define del_XPVMG(p) my_safefree(p) | |
1201 | ||
1202 | #define new_XPVLV() my_safemalloc(sizeof(XPVLV)) | |
1203 | #define del_XPVLV(p) my_safefree(p) | |
1204 | ||
1205 | #define new_XPVBM() my_safemalloc(sizeof(XPVBM)) | |
1206 | #define del_XPVBM(p) my_safefree(p) | |
1207 | ||
1208 | #else /* !PURIFY */ | |
1209 | ||
1210 | #define new_XIV() (void*)new_xiv() | |
1211 | #define del_XIV(p) del_xiv((XPVIV*) p) | |
1212 | ||
1213 | #define new_XNV() (void*)new_xnv() | |
1214 | #define del_XNV(p) del_xnv((XPVNV*) p) | |
9b94d1dd | 1215 | |
d33b2eba GS |
1216 | #define new_XRV() (void*)new_xrv() |
1217 | #define del_XRV(p) del_xrv((XRV*) p) | |
9b94d1dd | 1218 | |
d33b2eba GS |
1219 | #define new_XPV() (void*)new_xpv() |
1220 | #define del_XPV(p) del_xpv((XPV *)p) | |
1221 | ||
1222 | #define new_XPVIV() (void*)new_xpviv() | |
1223 | #define del_XPVIV(p) del_xpviv((XPVIV *)p) | |
1224 | ||
1225 | #define new_XPVNV() (void*)new_xpvnv() | |
1226 | #define del_XPVNV(p) del_xpvnv((XPVNV *)p) | |
1227 | ||
1228 | #define new_XPVCV() (void*)new_xpvcv() | |
1229 | #define del_XPVCV(p) del_xpvcv((XPVCV *)p) | |
1230 | ||
1231 | #define new_XPVAV() (void*)new_xpvav() | |
1232 | #define del_XPVAV(p) del_xpvav((XPVAV *)p) | |
1233 | ||
1234 | #define new_XPVHV() (void*)new_xpvhv() | |
1235 | #define del_XPVHV(p) del_xpvhv((XPVHV *)p) | |
1c846c1f | 1236 | |
d33b2eba GS |
1237 | #define new_XPVMG() (void*)new_xpvmg() |
1238 | #define del_XPVMG(p) del_xpvmg((XPVMG *)p) | |
1239 | ||
1240 | #define new_XPVLV() (void*)new_xpvlv() | |
1241 | #define del_XPVLV(p) del_xpvlv((XPVLV *)p) | |
1242 | ||
1243 | #define new_XPVBM() (void*)new_xpvbm() | |
1244 | #define del_XPVBM(p) del_xpvbm((XPVBM *)p) | |
1245 | ||
1246 | #endif /* PURIFY */ | |
9b94d1dd | 1247 | |
d33b2eba GS |
1248 | #define new_XPVGV() my_safemalloc(sizeof(XPVGV)) |
1249 | #define del_XPVGV(p) my_safefree(p) | |
1c846c1f | 1250 | |
d33b2eba GS |
1251 | #define new_XPVFM() my_safemalloc(sizeof(XPVFM)) |
1252 | #define del_XPVFM(p) my_safefree(p) | |
1c846c1f | 1253 | |
d33b2eba GS |
1254 | #define new_XPVIO() my_safemalloc(sizeof(XPVIO)) |
1255 | #define del_XPVIO(p) my_safefree(p) | |
8990e307 | 1256 | |
954c1994 GS |
1257 | /* |
1258 | =for apidoc sv_upgrade | |
1259 | ||
ff276b08 | 1260 | Upgrade an SV to a more complex form. Generally adds a new body type to the |
645c22ef | 1261 | SV, then copies across as much information as possible from the old body. |
ff276b08 | 1262 | You generally want to use the C<SvUPGRADE> macro wrapper. See also C<svtype>. |
954c1994 GS |
1263 | |
1264 | =cut | |
1265 | */ | |
1266 | ||
79072805 | 1267 | bool |
864dbfa3 | 1268 | Perl_sv_upgrade(pTHX_ register SV *sv, U32 mt) |
79072805 | 1269 | { |
c04a4dfe JH |
1270 | char* pv = NULL; |
1271 | U32 cur = 0; | |
1272 | U32 len = 0; | |
1273 | IV iv = 0; | |
1274 | NV nv = 0.0; | |
1275 | MAGIC* magic = NULL; | |
1276 | HV* stash = Nullhv; | |
79072805 | 1277 | |
765f542d NC |
1278 | if (mt != SVt_PV && SvIsCOW(sv)) { |
1279 | sv_force_normal_flags(sv, 0); | |
f130fd45 NIS |
1280 | } |
1281 | ||
79072805 LW |
1282 | if (SvTYPE(sv) == mt) |
1283 | return TRUE; | |
1284 | ||
a5f75d66 AD |
1285 | if (mt < SVt_PVIV) |
1286 | (void)SvOOK_off(sv); | |
1287 | ||
79072805 LW |
1288 | switch (SvTYPE(sv)) { |
1289 | case SVt_NULL: | |
1290 | pv = 0; | |
1291 | cur = 0; | |
1292 | len = 0; | |
1293 | iv = 0; | |
1294 | nv = 0.0; | |
1295 | magic = 0; | |
1296 | stash = 0; | |
1297 | break; | |
79072805 LW |
1298 | case SVt_IV: |
1299 | pv = 0; | |
1300 | cur = 0; | |
1301 | len = 0; | |
463ee0b2 | 1302 | iv = SvIVX(sv); |
65202027 | 1303 | nv = (NV)SvIVX(sv); |
79072805 LW |
1304 | del_XIV(SvANY(sv)); |
1305 | magic = 0; | |
1306 | stash = 0; | |
ed6116ce | 1307 | if (mt == SVt_NV) |
463ee0b2 | 1308 | mt = SVt_PVNV; |
ed6116ce LW |
1309 | else if (mt < SVt_PVIV) |
1310 | mt = SVt_PVIV; | |
79072805 LW |
1311 | break; |
1312 | case SVt_NV: | |
1313 | pv = 0; | |
1314 | cur = 0; | |
1315 | len = 0; | |
463ee0b2 | 1316 | nv = SvNVX(sv); |
1bd302c3 | 1317 | iv = I_V(nv); |
79072805 LW |
1318 | magic = 0; |
1319 | stash = 0; | |
1320 | del_XNV(SvANY(sv)); | |
1321 | SvANY(sv) = 0; | |
ed6116ce | 1322 | if (mt < SVt_PVNV) |
79072805 LW |
1323 | mt = SVt_PVNV; |
1324 | break; | |
ed6116ce LW |
1325 | case SVt_RV: |
1326 | pv = (char*)SvRV(sv); | |
1327 | cur = 0; | |
1328 | len = 0; | |
56431972 RB |
1329 | iv = PTR2IV(pv); |
1330 | nv = PTR2NV(pv); | |
ed6116ce LW |
1331 | del_XRV(SvANY(sv)); |
1332 | magic = 0; | |
1333 | stash = 0; | |
1334 | break; | |
79072805 | 1335 | case SVt_PV: |
463ee0b2 | 1336 | pv = SvPVX(sv); |
79072805 LW |
1337 | cur = SvCUR(sv); |
1338 | len = SvLEN(sv); | |
1339 | iv = 0; | |
1340 | nv = 0.0; | |
1341 | magic = 0; | |
1342 | stash = 0; | |
1343 | del_XPV(SvANY(sv)); | |
748a9306 LW |
1344 | if (mt <= SVt_IV) |
1345 | mt = SVt_PVIV; | |
1346 | else if (mt == SVt_NV) | |
1347 | mt = SVt_PVNV; | |
79072805 LW |
1348 | break; |
1349 | case SVt_PVIV: | |
463ee0b2 | 1350 | pv = SvPVX(sv); |
79072805 LW |
1351 | cur = SvCUR(sv); |
1352 | len = SvLEN(sv); | |
463ee0b2 | 1353 | iv = SvIVX(sv); |
79072805 LW |
1354 | nv = 0.0; |
1355 | magic = 0; | |
1356 | stash = 0; | |
1357 | del_XPVIV(SvANY(sv)); | |
1358 | break; | |
1359 | case SVt_PVNV: | |
463ee0b2 | 1360 | pv = SvPVX(sv); |
79072805 LW |
1361 | cur = SvCUR(sv); |
1362 | len = SvLEN(sv); | |
463ee0b2 LW |
1363 | iv = SvIVX(sv); |
1364 | nv = SvNVX(sv); | |
79072805 LW |
1365 | magic = 0; |
1366 | stash = 0; | |
1367 | del_XPVNV(SvANY(sv)); | |
1368 | break; | |
1369 | case SVt_PVMG: | |
463ee0b2 | 1370 | pv = SvPVX(sv); |
79072805 LW |
1371 | cur = SvCUR(sv); |
1372 | len = SvLEN(sv); | |
463ee0b2 LW |
1373 | iv = SvIVX(sv); |
1374 | nv = SvNVX(sv); | |
79072805 LW |
1375 | magic = SvMAGIC(sv); |
1376 | stash = SvSTASH(sv); | |
1377 | del_XPVMG(SvANY(sv)); | |
1378 | break; | |
1379 | default: | |
cea2e8a9 | 1380 | Perl_croak(aTHX_ "Can't upgrade that kind of scalar"); |
79072805 LW |
1381 | } |
1382 | ||
1383 | switch (mt) { | |
1384 | case SVt_NULL: | |
cea2e8a9 | 1385 | Perl_croak(aTHX_ "Can't upgrade to undef"); |
79072805 LW |
1386 | case SVt_IV: |
1387 | SvANY(sv) = new_XIV(); | |
463ee0b2 | 1388 | SvIVX(sv) = iv; |
79072805 LW |
1389 | break; |
1390 | case SVt_NV: | |
1391 | SvANY(sv) = new_XNV(); | |
463ee0b2 | 1392 | SvNVX(sv) = nv; |
79072805 | 1393 | break; |
ed6116ce LW |
1394 | case SVt_RV: |
1395 | SvANY(sv) = new_XRV(); | |
1396 | SvRV(sv) = (SV*)pv; | |
ed6116ce | 1397 | break; |
79072805 LW |
1398 | case SVt_PV: |
1399 | SvANY(sv) = new_XPV(); | |
463ee0b2 | 1400 | SvPVX(sv) = pv; |
79072805 LW |
1401 | SvCUR(sv) = cur; |
1402 | SvLEN(sv) = len; | |
1403 | break; | |
1404 | case SVt_PVIV: | |
1405 | SvANY(sv) = new_XPVIV(); | |
463ee0b2 | 1406 | SvPVX(sv) = pv; |
79072805 LW |
1407 | SvCUR(sv) = cur; |
1408 | SvLEN(sv) = len; | |
463ee0b2 | 1409 | SvIVX(sv) = iv; |
79072805 | 1410 | if (SvNIOK(sv)) |
a0d0e21e | 1411 | (void)SvIOK_on(sv); |
79072805 LW |
1412 | SvNOK_off(sv); |
1413 | break; | |
1414 | case SVt_PVNV: | |
1415 | SvANY(sv) = new_XPVNV(); | |
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 | break; |
1422 | case SVt_PVMG: | |
1423 | SvANY(sv) = new_XPVMG(); | |
463ee0b2 | 1424 | SvPVX(sv) = pv; |
79072805 LW |
1425 | SvCUR(sv) = cur; |
1426 | SvLEN(sv) = len; | |
463ee0b2 LW |
1427 | SvIVX(sv) = iv; |
1428 | SvNVX(sv) = nv; | |
79072805 LW |
1429 | SvMAGIC(sv) = magic; |
1430 | SvSTASH(sv) = stash; | |
1431 | break; | |
1432 | case SVt_PVLV: | |
1433 | SvANY(sv) = new_XPVLV(); | |
463ee0b2 | 1434 | SvPVX(sv) = pv; |
79072805 LW |
1435 | SvCUR(sv) = cur; |
1436 | SvLEN(sv) = len; | |
463ee0b2 LW |
1437 | SvIVX(sv) = iv; |
1438 | SvNVX(sv) = nv; | |
79072805 LW |
1439 | SvMAGIC(sv) = magic; |
1440 | SvSTASH(sv) = stash; | |
1441 | LvTARGOFF(sv) = 0; | |
1442 | LvTARGLEN(sv) = 0; | |
1443 | LvTARG(sv) = 0; | |
1444 | LvTYPE(sv) = 0; | |
1445 | break; | |
1446 | case SVt_PVAV: | |
1447 | SvANY(sv) = new_XPVAV(); | |
463ee0b2 LW |
1448 | if (pv) |
1449 | Safefree(pv); | |
2304df62 | 1450 | SvPVX(sv) = 0; |
d1bf51dd | 1451 | AvMAX(sv) = -1; |
93965878 | 1452 | AvFILLp(sv) = -1; |
463ee0b2 LW |
1453 | SvIVX(sv) = 0; |
1454 | SvNVX(sv) = 0.0; | |
1455 | SvMAGIC(sv) = magic; | |
1456 | SvSTASH(sv) = stash; | |
1457 | AvALLOC(sv) = 0; | |
79072805 LW |
1458 | AvARYLEN(sv) = 0; |
1459 | AvFLAGS(sv) = 0; | |
1460 | break; | |
1461 | case SVt_PVHV: | |
1462 | SvANY(sv) = new_XPVHV(); | |
463ee0b2 LW |
1463 | if (pv) |
1464 | Safefree(pv); | |
1465 | SvPVX(sv) = 0; | |
1466 | HvFILL(sv) = 0; | |
1467 | HvMAX(sv) = 0; | |
8aacddc1 NIS |
1468 | HvTOTALKEYS(sv) = 0; |
1469 | HvPLACEHOLDERS(sv) = 0; | |
79072805 LW |
1470 | SvMAGIC(sv) = magic; |
1471 | SvSTASH(sv) = stash; | |
79072805 LW |
1472 | HvRITER(sv) = 0; |
1473 | HvEITER(sv) = 0; | |
1474 | HvPMROOT(sv) = 0; | |
1475 | HvNAME(sv) = 0; | |
79072805 LW |
1476 | break; |
1477 | case SVt_PVCV: | |
1478 | SvANY(sv) = new_XPVCV(); | |
748a9306 | 1479 | Zero(SvANY(sv), 1, XPVCV); |
463ee0b2 | 1480 | SvPVX(sv) = pv; |
79072805 LW |
1481 | SvCUR(sv) = cur; |
1482 | SvLEN(sv) = len; | |
463ee0b2 LW |
1483 | SvIVX(sv) = iv; |
1484 | SvNVX(sv) = nv; | |
79072805 LW |
1485 | SvMAGIC(sv) = magic; |
1486 | SvSTASH(sv) = stash; | |
79072805 LW |
1487 | break; |
1488 | case SVt_PVGV: | |
1489 | SvANY(sv) = new_XPVGV(); | |
463ee0b2 | 1490 | SvPVX(sv) = pv; |
79072805 LW |
1491 | SvCUR(sv) = cur; |
1492 | SvLEN(sv) = len; | |
463ee0b2 LW |
1493 | SvIVX(sv) = iv; |
1494 | SvNVX(sv) = nv; | |
79072805 LW |
1495 | SvMAGIC(sv) = magic; |
1496 | SvSTASH(sv) = stash; | |
93a17b20 | 1497 | GvGP(sv) = 0; |
79072805 LW |
1498 | GvNAME(sv) = 0; |
1499 | GvNAMELEN(sv) = 0; | |
1500 | GvSTASH(sv) = 0; | |
a5f75d66 | 1501 | GvFLAGS(sv) = 0; |
79072805 LW |
1502 | break; |
1503 | case SVt_PVBM: | |
1504 | SvANY(sv) = new_XPVBM(); | |
463ee0b2 | 1505 | SvPVX(sv) = pv; |
79072805 LW |
1506 | SvCUR(sv) = cur; |
1507 | SvLEN(sv) = len; | |
463ee0b2 LW |
1508 | SvIVX(sv) = iv; |
1509 | SvNVX(sv) = nv; | |
79072805 LW |
1510 | SvMAGIC(sv) = magic; |
1511 | SvSTASH(sv) = stash; | |
1512 | BmRARE(sv) = 0; | |
1513 | BmUSEFUL(sv) = 0; | |
1514 | BmPREVIOUS(sv) = 0; | |
1515 | break; | |
1516 | case SVt_PVFM: | |
1517 | SvANY(sv) = new_XPVFM(); | |
748a9306 | 1518 | Zero(SvANY(sv), 1, XPVFM); |
463ee0b2 | 1519 | SvPVX(sv) = pv; |
79072805 LW |
1520 | SvCUR(sv) = cur; |
1521 | SvLEN(sv) = len; | |
463ee0b2 LW |
1522 | SvIVX(sv) = iv; |
1523 | SvNVX(sv) = nv; | |
79072805 LW |
1524 | SvMAGIC(sv) = magic; |
1525 | SvSTASH(sv) = stash; | |
79072805 | 1526 | break; |
8990e307 LW |
1527 | case SVt_PVIO: |
1528 | SvANY(sv) = new_XPVIO(); | |
748a9306 | 1529 | Zero(SvANY(sv), 1, XPVIO); |
8990e307 LW |
1530 | SvPVX(sv) = pv; |
1531 | SvCUR(sv) = cur; | |
1532 | SvLEN(sv) = len; | |
1533 | SvIVX(sv) = iv; | |
1534 | SvNVX(sv) = nv; | |
1535 | SvMAGIC(sv) = magic; | |
1536 | SvSTASH(sv) = stash; | |
85e6fe83 | 1537 | IoPAGE_LEN(sv) = 60; |
8990e307 LW |
1538 | break; |
1539 | } | |
1540 | SvFLAGS(sv) &= ~SVTYPEMASK; | |
1541 | SvFLAGS(sv) |= mt; | |
79072805 LW |
1542 | return TRUE; |
1543 | } | |
1544 | ||
645c22ef DM |
1545 | /* |
1546 | =for apidoc sv_backoff | |
1547 | ||
1548 | Remove any string offset. You should normally use the C<SvOOK_off> macro | |
1549 | wrapper instead. | |
1550 | ||
1551 | =cut | |
1552 | */ | |
1553 | ||
79072805 | 1554 | int |
864dbfa3 | 1555 | Perl_sv_backoff(pTHX_ register SV *sv) |
79072805 LW |
1556 | { |
1557 | assert(SvOOK(sv)); | |
463ee0b2 LW |
1558 | if (SvIVX(sv)) { |
1559 | char *s = SvPVX(sv); | |
1560 | SvLEN(sv) += SvIVX(sv); | |
1561 | SvPVX(sv) -= SvIVX(sv); | |
79072805 | 1562 | SvIV_set(sv, 0); |
463ee0b2 | 1563 | Move(s, SvPVX(sv), SvCUR(sv)+1, char); |
79072805 LW |
1564 | } |
1565 | SvFLAGS(sv) &= ~SVf_OOK; | |
a0d0e21e | 1566 | return 0; |
79072805 LW |
1567 | } |
1568 | ||
954c1994 GS |
1569 | /* |
1570 | =for apidoc sv_grow | |
1571 | ||
645c22ef DM |
1572 | Expands the character buffer in the SV. If necessary, uses C<sv_unref> and |
1573 | upgrades the SV to C<SVt_PV>. Returns a pointer to the character buffer. | |
1574 | Use the C<SvGROW> wrapper instead. | |
954c1994 GS |
1575 | |
1576 | =cut | |
1577 | */ | |
1578 | ||
79072805 | 1579 | char * |
864dbfa3 | 1580 | Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen) |
79072805 LW |
1581 | { |
1582 | register char *s; | |
1583 | ||
55497cff | 1584 | #ifdef HAS_64K_LIMIT |
79072805 | 1585 | if (newlen >= 0x10000) { |
1d7c1841 GS |
1586 | PerlIO_printf(Perl_debug_log, |
1587 | "Allocation too large: %"UVxf"\n", (UV)newlen); | |
79072805 LW |
1588 | my_exit(1); |
1589 | } | |
55497cff | 1590 | #endif /* HAS_64K_LIMIT */ |
a0d0e21e LW |
1591 | if (SvROK(sv)) |
1592 | sv_unref(sv); | |
79072805 LW |
1593 | if (SvTYPE(sv) < SVt_PV) { |
1594 | sv_upgrade(sv, SVt_PV); | |
463ee0b2 | 1595 | s = SvPVX(sv); |
79072805 LW |
1596 | } |
1597 | else if (SvOOK(sv)) { /* pv is offset? */ | |
1598 | sv_backoff(sv); | |
463ee0b2 | 1599 | s = SvPVX(sv); |
79072805 LW |
1600 | if (newlen > SvLEN(sv)) |
1601 | newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */ | |
c6f8c383 GA |
1602 | #ifdef HAS_64K_LIMIT |
1603 | if (newlen >= 0x10000) | |
1604 | newlen = 0xFFFF; | |
1605 | #endif | |
79072805 | 1606 | } |
bc44a8a2 | 1607 | else |
463ee0b2 | 1608 | s = SvPVX(sv); |
54f0641b | 1609 | |
79072805 | 1610 | if (newlen > SvLEN(sv)) { /* need more room? */ |
8d6dde3e | 1611 | if (SvLEN(sv) && s) { |
7bab3ede | 1612 | #ifdef MYMALLOC |
8d6dde3e IZ |
1613 | STRLEN l = malloced_size((void*)SvPVX(sv)); |
1614 | if (newlen <= l) { | |
1615 | SvLEN_set(sv, l); | |
1616 | return s; | |
1617 | } else | |
c70c8a0a | 1618 | #endif |
79072805 | 1619 | Renew(s,newlen,char); |
8d6dde3e | 1620 | } |
4e83176d | 1621 | else { |
4e83176d | 1622 | New(703, s, newlen, char); |
40565179 | 1623 | if (SvPVX(sv) && SvCUR(sv)) { |
54f0641b | 1624 | Move(SvPVX(sv), s, (newlen < SvCUR(sv)) ? newlen : SvCUR(sv), char); |
40565179 | 1625 | } |
4e83176d | 1626 | } |
79072805 LW |
1627 | SvPV_set(sv, s); |
1628 | SvLEN_set(sv, newlen); | |
1629 | } | |
1630 | return s; | |
1631 | } | |
1632 | ||
954c1994 GS |
1633 | /* |
1634 | =for apidoc sv_setiv | |
1635 | ||
645c22ef DM |
1636 | Copies an integer into the given SV, upgrading first if necessary. |
1637 | Does not handle 'set' magic. See also C<sv_setiv_mg>. | |
954c1994 GS |
1638 | |
1639 | =cut | |
1640 | */ | |
1641 | ||
79072805 | 1642 | void |
864dbfa3 | 1643 | Perl_sv_setiv(pTHX_ register SV *sv, IV i) |
79072805 | 1644 | { |
765f542d | 1645 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 LW |
1646 | switch (SvTYPE(sv)) { |
1647 | case SVt_NULL: | |
79072805 | 1648 | sv_upgrade(sv, SVt_IV); |
463ee0b2 LW |
1649 | break; |
1650 | case SVt_NV: | |
1651 | sv_upgrade(sv, SVt_PVNV); | |
1652 | break; | |
ed6116ce | 1653 | case SVt_RV: |
463ee0b2 | 1654 | case SVt_PV: |
79072805 | 1655 | sv_upgrade(sv, SVt_PVIV); |
463ee0b2 | 1656 | break; |
a0d0e21e LW |
1657 | |
1658 | case SVt_PVGV: | |
a0d0e21e LW |
1659 | case SVt_PVAV: |
1660 | case SVt_PVHV: | |
1661 | case SVt_PVCV: | |
1662 | case SVt_PVFM: | |
1663 | case SVt_PVIO: | |
411caa50 | 1664 | Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0), |
53e06cf0 | 1665 | OP_DESC(PL_op)); |
463ee0b2 | 1666 | } |
a0d0e21e | 1667 | (void)SvIOK_only(sv); /* validate number */ |
a5f75d66 | 1668 | SvIVX(sv) = i; |
463ee0b2 | 1669 | SvTAINT(sv); |
79072805 LW |
1670 | } |
1671 | ||
954c1994 GS |
1672 | /* |
1673 | =for apidoc sv_setiv_mg | |
1674 | ||
1675 | Like C<sv_setiv>, but also handles 'set' magic. | |
1676 | ||
1677 | =cut | |
1678 | */ | |
1679 | ||
79072805 | 1680 | void |
864dbfa3 | 1681 | Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i) |
ef50df4b GS |
1682 | { |
1683 | sv_setiv(sv,i); | |
1684 | SvSETMAGIC(sv); | |
1685 | } | |
1686 | ||
954c1994 GS |
1687 | /* |
1688 | =for apidoc sv_setuv | |
1689 | ||
645c22ef DM |
1690 | Copies an unsigned integer into the given SV, upgrading first if necessary. |
1691 | Does not handle 'set' magic. See also C<sv_setuv_mg>. | |
954c1994 GS |
1692 | |
1693 | =cut | |
1694 | */ | |
1695 | ||
ef50df4b | 1696 | void |
864dbfa3 | 1697 | Perl_sv_setuv(pTHX_ register SV *sv, UV u) |
55497cff | 1698 | { |
55ada374 NC |
1699 | /* With these two if statements: |
1700 | u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865 | |
d460ef45 | 1701 | |
55ada374 NC |
1702 | without |
1703 | u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865 | |
d460ef45 | 1704 | |
55ada374 NC |
1705 | If you wish to remove them, please benchmark to see what the effect is |
1706 | */ | |
28e5dec8 JH |
1707 | if (u <= (UV)IV_MAX) { |
1708 | sv_setiv(sv, (IV)u); | |
1709 | return; | |
1710 | } | |
25da4f38 IZ |
1711 | sv_setiv(sv, 0); |
1712 | SvIsUV_on(sv); | |
1713 | SvUVX(sv) = u; | |
55497cff | 1714 | } |
1715 | ||
954c1994 GS |
1716 | /* |
1717 | =for apidoc sv_setuv_mg | |
1718 | ||
1719 | Like C<sv_setuv>, but also handles 'set' magic. | |
1720 | ||
1721 | =cut | |
1722 | */ | |
1723 | ||
55497cff | 1724 | void |
864dbfa3 | 1725 | Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u) |
ef50df4b | 1726 | { |
55ada374 NC |
1727 | /* With these two if statements: |
1728 | u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865 | |
d460ef45 | 1729 | |
55ada374 NC |
1730 | without |
1731 | u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865 | |
d460ef45 | 1732 | |
55ada374 NC |
1733 | If you wish to remove them, please benchmark to see what the effect is |
1734 | */ | |
28e5dec8 JH |
1735 | if (u <= (UV)IV_MAX) { |
1736 | sv_setiv(sv, (IV)u); | |
1737 | } else { | |
1738 | sv_setiv(sv, 0); | |
1739 | SvIsUV_on(sv); | |
1740 | sv_setuv(sv,u); | |
1741 | } | |
ef50df4b GS |
1742 | SvSETMAGIC(sv); |
1743 | } | |
1744 | ||
954c1994 GS |
1745 | /* |
1746 | =for apidoc sv_setnv | |
1747 | ||
645c22ef DM |
1748 | Copies a double into the given SV, upgrading first if necessary. |
1749 | Does not handle 'set' magic. See also C<sv_setnv_mg>. | |
954c1994 GS |
1750 | |
1751 | =cut | |
1752 | */ | |
1753 | ||
ef50df4b | 1754 | void |
65202027 | 1755 | Perl_sv_setnv(pTHX_ register SV *sv, NV num) |
79072805 | 1756 | { |
765f542d | 1757 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
a0d0e21e LW |
1758 | switch (SvTYPE(sv)) { |
1759 | case SVt_NULL: | |
1760 | case SVt_IV: | |
79072805 | 1761 | sv_upgrade(sv, SVt_NV); |
a0d0e21e | 1762 | break; |
a0d0e21e LW |
1763 | case SVt_RV: |
1764 | case SVt_PV: | |
1765 | case SVt_PVIV: | |
79072805 | 1766 | sv_upgrade(sv, SVt_PVNV); |
a0d0e21e | 1767 | break; |
827b7e14 | 1768 | |
a0d0e21e | 1769 | case SVt_PVGV: |
a0d0e21e LW |
1770 | case SVt_PVAV: |
1771 | case SVt_PVHV: | |
1772 | case SVt_PVCV: | |
1773 | case SVt_PVFM: | |
1774 | case SVt_PVIO: | |
411caa50 | 1775 | Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0), |
53e06cf0 | 1776 | OP_NAME(PL_op)); |
79072805 | 1777 | } |
463ee0b2 | 1778 | SvNVX(sv) = num; |
a0d0e21e | 1779 | (void)SvNOK_only(sv); /* validate number */ |
463ee0b2 | 1780 | SvTAINT(sv); |
79072805 LW |
1781 | } |
1782 | ||
954c1994 GS |
1783 | /* |
1784 | =for apidoc sv_setnv_mg | |
1785 | ||
1786 | Like C<sv_setnv>, but also handles 'set' magic. | |
1787 | ||
1788 | =cut | |
1789 | */ | |
1790 | ||
ef50df4b | 1791 | void |
65202027 | 1792 | Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num) |
ef50df4b GS |
1793 | { |
1794 | sv_setnv(sv,num); | |
1795 | SvSETMAGIC(sv); | |
1796 | } | |
1797 | ||
645c22ef DM |
1798 | /* Print an "isn't numeric" warning, using a cleaned-up, |
1799 | * printable version of the offending string | |
1800 | */ | |
1801 | ||
76e3520e | 1802 | STATIC void |
cea2e8a9 | 1803 | S_not_a_number(pTHX_ SV *sv) |
a0d0e21e | 1804 | { |
94463019 JH |
1805 | SV *dsv; |
1806 | char tmpbuf[64]; | |
1807 | char *pv; | |
1808 | ||
1809 | if (DO_UTF8(sv)) { | |
1810 | dsv = sv_2mortal(newSVpv("", 0)); | |
1811 | pv = sv_uni_display(dsv, sv, 10, 0); | |
1812 | } else { | |
1813 | char *d = tmpbuf; | |
1814 | char *limit = tmpbuf + sizeof(tmpbuf) - 8; | |
1815 | /* each *s can expand to 4 chars + "...\0", | |
1816 | i.e. need room for 8 chars */ | |
ecdeb87c | 1817 | |
94463019 JH |
1818 | char *s, *end; |
1819 | for (s = SvPVX(sv), end = s + SvCUR(sv); s < end && d < limit; s++) { | |
1820 | int ch = *s & 0xFF; | |
1821 | if (ch & 128 && !isPRINT_LC(ch)) { | |
1822 | *d++ = 'M'; | |
1823 | *d++ = '-'; | |
1824 | ch &= 127; | |
1825 | } | |
1826 | if (ch == '\n') { | |
1827 | *d++ = '\\'; | |
1828 | *d++ = 'n'; | |
1829 | } | |
1830 | else if (ch == '\r') { | |
1831 | *d++ = '\\'; | |
1832 | *d++ = 'r'; | |
1833 | } | |
1834 | else if (ch == '\f') { | |
1835 | *d++ = '\\'; | |
1836 | *d++ = 'f'; | |
1837 | } | |
1838 | else if (ch == '\\') { | |
1839 | *d++ = '\\'; | |
1840 | *d++ = '\\'; | |
1841 | } | |
1842 | else if (ch == '\0') { | |
1843 | *d++ = '\\'; | |
1844 | *d++ = '0'; | |
1845 | } | |
1846 | else if (isPRINT_LC(ch)) | |
1847 | *d++ = ch; | |
1848 | else { | |
1849 | *d++ = '^'; | |
1850 | *d++ = toCTRL(ch); | |
1851 | } | |
1852 | } | |
1853 | if (s < end) { | |
1854 | *d++ = '.'; | |
1855 | *d++ = '.'; | |
1856 | *d++ = '.'; | |
1857 | } | |
1858 | *d = '\0'; | |
1859 | pv = tmpbuf; | |
a0d0e21e | 1860 | } |
a0d0e21e | 1861 | |
533c011a | 1862 | if (PL_op) |
9014280d | 1863 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 JH |
1864 | "Argument \"%s\" isn't numeric in %s", pv, |
1865 | OP_DESC(PL_op)); | |
a0d0e21e | 1866 | else |
9014280d | 1867 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 | 1868 | "Argument \"%s\" isn't numeric", pv); |
a0d0e21e LW |
1869 | } |
1870 | ||
c2988b20 NC |
1871 | /* |
1872 | =for apidoc looks_like_number | |
1873 | ||
645c22ef DM |
1874 | Test if the content of an SV looks like a number (or is a number). |
1875 | C<Inf> and C<Infinity> are treated as numbers (so will not issue a | |
1876 | non-numeric warning), even if your atof() doesn't grok them. | |
c2988b20 NC |
1877 | |
1878 | =cut | |
1879 | */ | |
1880 | ||
1881 | I32 | |
1882 | Perl_looks_like_number(pTHX_ SV *sv) | |
1883 | { | |
1884 | register char *sbegin; | |
1885 | STRLEN len; | |
1886 | ||
1887 | if (SvPOK(sv)) { | |
1888 | sbegin = SvPVX(sv); | |
1889 | len = SvCUR(sv); | |
1890 | } | |
1891 | else if (SvPOKp(sv)) | |
1892 | sbegin = SvPV(sv, len); | |
1893 | else | |
1894 | return 1; /* Historic. Wrong? */ | |
1895 | return grok_number(sbegin, len, NULL); | |
1896 | } | |
25da4f38 IZ |
1897 | |
1898 | /* Actually, ISO C leaves conversion of UV to IV undefined, but | |
1899 | until proven guilty, assume that things are not that bad... */ | |
1900 | ||
645c22ef DM |
1901 | /* |
1902 | NV_PRESERVES_UV: | |
1903 | ||
1904 | As 64 bit platforms often have an NV that doesn't preserve all bits of | |
28e5dec8 JH |
1905 | an IV (an assumption perl has been based on to date) it becomes necessary |
1906 | to remove the assumption that the NV always carries enough precision to | |
1907 | recreate the IV whenever needed, and that the NV is the canonical form. | |
1908 | Instead, IV/UV and NV need to be given equal rights. So as to not lose | |
645c22ef | 1909 | precision as a side effect of conversion (which would lead to insanity |
28e5dec8 JH |
1910 | and the dragon(s) in t/op/numconvert.t getting very angry) the intent is |
1911 | 1) to distinguish between IV/UV/NV slots that have cached a valid | |
1912 | conversion where precision was lost and IV/UV/NV slots that have a | |
1913 | valid conversion which has lost no precision | |
645c22ef | 1914 | 2) to ensure that if a numeric conversion to one form is requested that |
28e5dec8 JH |
1915 | would lose precision, the precise conversion (or differently |
1916 | imprecise conversion) is also performed and cached, to prevent | |
1917 | requests for different numeric formats on the same SV causing | |
1918 | lossy conversion chains. (lossless conversion chains are perfectly | |
1919 | acceptable (still)) | |
1920 | ||
1921 | ||
1922 | flags are used: | |
1923 | SvIOKp is true if the IV slot contains a valid value | |
1924 | SvIOK is true only if the IV value is accurate (UV if SvIOK_UV true) | |
1925 | SvNOKp is true if the NV slot contains a valid value | |
1926 | SvNOK is true only if the NV value is accurate | |
1927 | ||
1928 | so | |
645c22ef | 1929 | while converting from PV to NV, check to see if converting that NV to an |
28e5dec8 JH |
1930 | IV(or UV) would lose accuracy over a direct conversion from PV to |
1931 | IV(or UV). If it would, cache both conversions, return NV, but mark | |
1932 | SV as IOK NOKp (ie not NOK). | |
1933 | ||
645c22ef | 1934 | While converting from PV to IV, check to see if converting that IV to an |
28e5dec8 JH |
1935 | NV would lose accuracy over a direct conversion from PV to NV. If it |
1936 | would, cache both conversions, flag similarly. | |
1937 | ||
1938 | Before, the SV value "3.2" could become NV=3.2 IV=3 NOK, IOK quite | |
1939 | correctly because if IV & NV were set NV *always* overruled. | |
645c22ef DM |
1940 | Now, "3.2" will become NV=3.2 IV=3 NOK, IOKp, because the flag's meaning |
1941 | changes - now IV and NV together means that the two are interchangeable: | |
28e5dec8 | 1942 | SvIVX == (IV) SvNVX && SvNVX == (NV) SvIVX; |
d460ef45 | 1943 | |
645c22ef DM |
1944 | The benefit of this is that operations such as pp_add know that if |
1945 | SvIOK is true for both left and right operands, then integer addition | |
1946 | can be used instead of floating point (for cases where the result won't | |
1947 | overflow). Before, floating point was always used, which could lead to | |
28e5dec8 JH |
1948 | loss of precision compared with integer addition. |
1949 | ||
1950 | * making IV and NV equal status should make maths accurate on 64 bit | |
1951 | platforms | |
1952 | * may speed up maths somewhat if pp_add and friends start to use | |
645c22ef | 1953 | integers when possible instead of fp. (Hopefully the overhead in |
28e5dec8 JH |
1954 | looking for SvIOK and checking for overflow will not outweigh the |
1955 | fp to integer speedup) | |
1956 | * will slow down integer operations (callers of SvIV) on "inaccurate" | |
1957 | values, as the change from SvIOK to SvIOKp will cause a call into | |
1958 | sv_2iv each time rather than a macro access direct to the IV slot | |
1959 | * should speed up number->string conversion on integers as IV is | |
645c22ef | 1960 | favoured when IV and NV are equally accurate |
28e5dec8 JH |
1961 | |
1962 | #################################################################### | |
645c22ef DM |
1963 | You had better be using SvIOK_notUV if you want an IV for arithmetic: |
1964 | SvIOK is true if (IV or UV), so you might be getting (IV)SvUV. | |
1965 | On the other hand, SvUOK is true iff UV. | |
28e5dec8 JH |
1966 | #################################################################### |
1967 | ||
645c22ef | 1968 | Your mileage will vary depending your CPU's relative fp to integer |
28e5dec8 JH |
1969 | performance ratio. |
1970 | */ | |
1971 | ||
1972 | #ifndef NV_PRESERVES_UV | |
645c22ef DM |
1973 | # define IS_NUMBER_UNDERFLOW_IV 1 |
1974 | # define IS_NUMBER_UNDERFLOW_UV 2 | |
1975 | # define IS_NUMBER_IV_AND_UV 2 | |
1976 | # define IS_NUMBER_OVERFLOW_IV 4 | |
1977 | # define IS_NUMBER_OVERFLOW_UV 5 | |
1978 | ||
1979 | /* sv_2iuv_non_preserve(): private routine for use by sv_2iv() and sv_2uv() */ | |
28e5dec8 JH |
1980 | |
1981 | /* For sv_2nv these three cases are "SvNOK and don't bother casting" */ | |
1982 | STATIC int | |
645c22ef | 1983 | S_sv_2iuv_non_preserve(pTHX_ register SV *sv, I32 numtype) |
28e5dec8 | 1984 | { |
1779d84d | 1985 | 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 |
1986 | if (SvNVX(sv) < (NV)IV_MIN) { |
1987 | (void)SvIOKp_on(sv); | |
1988 | (void)SvNOK_on(sv); | |
1989 | SvIVX(sv) = IV_MIN; | |
1990 | return IS_NUMBER_UNDERFLOW_IV; | |
1991 | } | |
1992 | if (SvNVX(sv) > (NV)UV_MAX) { | |
1993 | (void)SvIOKp_on(sv); | |
1994 | (void)SvNOK_on(sv); | |
1995 | SvIsUV_on(sv); | |
1996 | SvUVX(sv) = UV_MAX; | |
1997 | return IS_NUMBER_OVERFLOW_UV; | |
1998 | } | |
c2988b20 NC |
1999 | (void)SvIOKp_on(sv); |
2000 | (void)SvNOK_on(sv); | |
2001 | /* Can't use strtol etc to convert this string. (See truth table in | |
2002 | sv_2iv */ | |
2003 | if (SvNVX(sv) <= (UV)IV_MAX) { | |
2004 | SvIVX(sv) = I_V(SvNVX(sv)); | |
2005 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { | |
2006 | SvIOK_on(sv); /* Integer is precise. NOK, IOK */ | |
2007 | } else { | |
2008 | /* Integer is imprecise. NOK, IOKp */ | |
2009 | } | |
2010 | return SvNVX(sv) < 0 ? IS_NUMBER_UNDERFLOW_UV : IS_NUMBER_IV_AND_UV; | |
2011 | } | |
2012 | SvIsUV_on(sv); | |
2013 | SvUVX(sv) = U_V(SvNVX(sv)); | |
2014 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
2015 | if (SvUVX(sv) == UV_MAX) { | |
2016 | /* As we know that NVs don't preserve UVs, UV_MAX cannot | |
2017 | possibly be preserved by NV. Hence, it must be overflow. | |
2018 | NOK, IOKp */ | |
2019 | return IS_NUMBER_OVERFLOW_UV; | |
2020 | } | |
2021 | SvIOK_on(sv); /* Integer is precise. NOK, UOK */ | |
2022 | } else { | |
2023 | /* Integer is imprecise. NOK, IOKp */ | |
28e5dec8 | 2024 | } |
c2988b20 | 2025 | return IS_NUMBER_OVERFLOW_IV; |
28e5dec8 | 2026 | } |
645c22ef DM |
2027 | #endif /* !NV_PRESERVES_UV*/ |
2028 | ||
2029 | /* | |
2030 | =for apidoc sv_2iv | |
2031 | ||
2032 | Return the integer value of an SV, doing any necessary string conversion, | |
2033 | magic etc. Normally used via the C<SvIV(sv)> and C<SvIVx(sv)> macros. | |
2034 | ||
2035 | =cut | |
2036 | */ | |
28e5dec8 | 2037 | |
a0d0e21e | 2038 | IV |
864dbfa3 | 2039 | Perl_sv_2iv(pTHX_ register SV *sv) |
79072805 LW |
2040 | { |
2041 | if (!sv) | |
2042 | return 0; | |
8990e307 | 2043 | if (SvGMAGICAL(sv)) { |
463ee0b2 LW |
2044 | mg_get(sv); |
2045 | if (SvIOKp(sv)) | |
2046 | return SvIVX(sv); | |
748a9306 | 2047 | if (SvNOKp(sv)) { |
25da4f38 | 2048 | return I_V(SvNVX(sv)); |
748a9306 | 2049 | } |
36477c24 | 2050 | if (SvPOKp(sv) && SvLEN(sv)) |
2051 | return asIV(sv); | |
3fe9a6f1 | 2052 | if (!SvROK(sv)) { |
d008e5eb | 2053 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2054 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
1d7c1841 | 2055 | report_uninit(); |
c6ee37c5 | 2056 | } |
36477c24 | 2057 | return 0; |
3fe9a6f1 | 2058 | } |
463ee0b2 | 2059 | } |
ed6116ce | 2060 | if (SvTHINKFIRST(sv)) { |
a0d0e21e | 2061 | if (SvROK(sv)) { |
a0d0e21e | 2062 | SV* tmpstr; |
1554e226 | 2063 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2064 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2065 | return SvIV(tmpstr); |
56431972 | 2066 | return PTR2IV(SvRV(sv)); |
a0d0e21e | 2067 | } |
765f542d NC |
2068 | if (SvIsCOW(sv)) { |
2069 | sv_force_normal_flags(sv, 0); | |
47deb5e7 | 2070 | } |
0336b60e | 2071 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2072 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 | 2073 | report_uninit(); |
ed6116ce LW |
2074 | return 0; |
2075 | } | |
79072805 | 2076 | } |
25da4f38 IZ |
2077 | if (SvIOKp(sv)) { |
2078 | if (SvIsUV(sv)) { | |
2079 | return (IV)(SvUVX(sv)); | |
2080 | } | |
2081 | else { | |
2082 | return SvIVX(sv); | |
2083 | } | |
463ee0b2 | 2084 | } |
748a9306 | 2085 | if (SvNOKp(sv)) { |
28e5dec8 JH |
2086 | /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv |
2087 | * without also getting a cached IV/UV from it at the same time | |
2088 | * (ie PV->NV conversion should detect loss of accuracy and cache | |
2089 | * IV or UV at same time to avoid this. NWC */ | |
25da4f38 IZ |
2090 | |
2091 | if (SvTYPE(sv) == SVt_NV) | |
2092 | sv_upgrade(sv, SVt_PVNV); | |
2093 | ||
28e5dec8 JH |
2094 | (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */ |
2095 | /* < not <= as for NV doesn't preserve UV, ((NV)IV_MAX+1) will almost | |
2096 | certainly cast into the IV range at IV_MAX, whereas the correct | |
2097 | answer is the UV IV_MAX +1. Hence < ensures that dodgy boundary | |
2098 | cases go to UV */ | |
2099 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
748a9306 | 2100 | SvIVX(sv) = I_V(SvNVX(sv)); |
28e5dec8 JH |
2101 | if (SvNVX(sv) == (NV) SvIVX(sv) |
2102 | #ifndef NV_PRESERVES_UV | |
2103 | && (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2104 | (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv))) | |
2105 | /* Don't flag it as "accurately an integer" if the number | |
2106 | came from a (by definition imprecise) NV operation, and | |
2107 | we're outside the range of NV integer precision */ | |
2108 | #endif | |
2109 | ) { | |
2110 | SvIOK_on(sv); /* Can this go wrong with rounding? NWC */ | |
2111 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2112 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (precise)\n", |
28e5dec8 JH |
2113 | PTR2UV(sv), |
2114 | SvNVX(sv), | |
2115 | SvIVX(sv))); | |
2116 | ||
2117 | } else { | |
2118 | /* IV not precise. No need to convert from PV, as NV | |
2119 | conversion would already have cached IV if it detected | |
2120 | that PV->IV would be better than PV->NV->IV | |
2121 | flags already correct - don't set public IOK. */ | |
2122 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2123 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (imprecise)\n", |
28e5dec8 JH |
2124 | PTR2UV(sv), |
2125 | SvNVX(sv), | |
2126 | SvIVX(sv))); | |
2127 | } | |
2128 | /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN, | |
2129 | but the cast (NV)IV_MIN rounds to a the value less (more | |
2130 | negative) than IV_MIN which happens to be equal to SvNVX ?? | |
2131 | Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and | |
2132 | NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and | |
2133 | (NV)UVX == NVX are both true, but the values differ. :-( | |
2134 | Hopefully for 2s complement IV_MIN is something like | |
2135 | 0x8000000000000000 which will be exact. NWC */ | |
d460ef45 | 2136 | } |
25da4f38 | 2137 | else { |
ff68c719 | 2138 | SvUVX(sv) = U_V(SvNVX(sv)); |
28e5dec8 JH |
2139 | if ( |
2140 | (SvNVX(sv) == (NV) SvUVX(sv)) | |
2141 | #ifndef NV_PRESERVES_UV | |
2142 | /* Make sure it's not 0xFFFFFFFFFFFFFFFF */ | |
2143 | /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */ | |
2144 | && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv)) | |
2145 | /* Don't flag it as "accurately an integer" if the number | |
2146 | came from a (by definition imprecise) NV operation, and | |
2147 | we're outside the range of NV integer precision */ | |
2148 | #endif | |
2149 | ) | |
2150 | SvIOK_on(sv); | |
25da4f38 IZ |
2151 | SvIsUV_on(sv); |
2152 | ret_iv_max: | |
1c846c1f | 2153 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
57def98f | 2154 | "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n", |
56431972 | 2155 | PTR2UV(sv), |
57def98f JH |
2156 | SvUVX(sv), |
2157 | SvUVX(sv))); | |
25da4f38 IZ |
2158 | return (IV)SvUVX(sv); |
2159 | } | |
748a9306 LW |
2160 | } |
2161 | else if (SvPOKp(sv) && SvLEN(sv)) { | |
c2988b20 NC |
2162 | UV value; |
2163 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
25da4f38 IZ |
2164 | /* We want to avoid a possible problem when we cache an IV which |
2165 | may be later translated to an NV, and the resulting NV is not | |
c2988b20 NC |
2166 | the same as the direct translation of the initial string |
2167 | (eg 123.456 can shortcut to the IV 123 with atol(), but we must | |
2168 | be careful to ensure that the value with the .456 is around if the | |
2169 | NV value is requested in the future). | |
1c846c1f | 2170 | |
25da4f38 IZ |
2171 | This means that if we cache such an IV, we need to cache the |
2172 | NV as well. Moreover, we trade speed for space, and do not | |
28e5dec8 | 2173 | cache the NV if we are sure it's not needed. |
25da4f38 | 2174 | */ |
16b7a9a4 | 2175 | |
c2988b20 NC |
2176 | /* SVt_PVNV is one higher than SVt_PVIV, hence this order */ |
2177 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2178 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2179 | /* It's definitely an integer, only upgrade to PVIV */ |
28e5dec8 JH |
2180 | if (SvTYPE(sv) < SVt_PVIV) |
2181 | sv_upgrade(sv, SVt_PVIV); | |
f7bbb42a | 2182 | (void)SvIOK_on(sv); |
c2988b20 NC |
2183 | } else if (SvTYPE(sv) < SVt_PVNV) |
2184 | sv_upgrade(sv, SVt_PVNV); | |
28e5dec8 | 2185 | |
c2988b20 NC |
2186 | /* If NV preserves UV then we only use the UV value if we know that |
2187 | we aren't going to call atof() below. If NVs don't preserve UVs | |
2188 | then the value returned may have more precision than atof() will | |
2189 | return, even though value isn't perfectly accurate. */ | |
2190 | if ((numtype & (IS_NUMBER_IN_UV | |
2191 | #ifdef NV_PRESERVES_UV | |
2192 | | IS_NUMBER_NOT_INT | |
2193 | #endif | |
2194 | )) == IS_NUMBER_IN_UV) { | |
2195 | /* This won't turn off the public IOK flag if it was set above */ | |
2196 | (void)SvIOKp_on(sv); | |
2197 | ||
2198 | if (!(numtype & IS_NUMBER_NEG)) { | |
2199 | /* positive */; | |
2200 | if (value <= (UV)IV_MAX) { | |
2201 | SvIVX(sv) = (IV)value; | |
2202 | } else { | |
2203 | SvUVX(sv) = value; | |
2204 | SvIsUV_on(sv); | |
2205 | } | |
2206 | } else { | |
2207 | /* 2s complement assumption */ | |
2208 | if (value <= (UV)IV_MIN) { | |
2209 | SvIVX(sv) = -(IV)value; | |
2210 | } else { | |
2211 | /* Too negative for an IV. This is a double upgrade, but | |
d1be9408 | 2212 | I'm assuming it will be rare. */ |
c2988b20 NC |
2213 | if (SvTYPE(sv) < SVt_PVNV) |
2214 | sv_upgrade(sv, SVt_PVNV); | |
2215 | SvNOK_on(sv); | |
2216 | SvIOK_off(sv); | |
2217 | SvIOKp_on(sv); | |
2218 | SvNVX(sv) = -(NV)value; | |
2219 | SvIVX(sv) = IV_MIN; | |
2220 | } | |
2221 | } | |
2222 | } | |
2223 | /* For !NV_PRESERVES_UV and IS_NUMBER_IN_UV and IS_NUMBER_NOT_INT we | |
2224 | will be in the previous block to set the IV slot, and the next | |
2225 | block to set the NV slot. So no else here. */ | |
2226 | ||
2227 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2228 | != IS_NUMBER_IN_UV) { | |
2229 | /* It wasn't an (integer that doesn't overflow the UV). */ | |
2230 | SvNVX(sv) = Atof(SvPVX(sv)); | |
28e5dec8 | 2231 | |
c2988b20 NC |
2232 | if (! numtype && ckWARN(WARN_NUMERIC)) |
2233 | not_a_number(sv); | |
28e5dec8 | 2234 | |
65202027 | 2235 | #if defined(USE_LONG_DOUBLE) |
c2988b20 NC |
2236 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%" PERL_PRIgldbl ")\n", |
2237 | PTR2UV(sv), SvNVX(sv))); | |
65202027 | 2238 | #else |
1779d84d | 2239 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"NVgf")\n", |
c2988b20 | 2240 | PTR2UV(sv), SvNVX(sv))); |
65202027 | 2241 | #endif |
28e5dec8 JH |
2242 | |
2243 | ||
2244 | #ifdef NV_PRESERVES_UV | |
c2988b20 NC |
2245 | (void)SvIOKp_on(sv); |
2246 | (void)SvNOK_on(sv); | |
2247 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
2248 | SvIVX(sv) = I_V(SvNVX(sv)); | |
2249 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { | |
2250 | SvIOK_on(sv); | |
28e5dec8 | 2251 | } else { |
c2988b20 NC |
2252 | /* Integer is imprecise. NOK, IOKp */ |
2253 | } | |
2254 | /* UV will not work better than IV */ | |
2255 | } else { | |
2256 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2257 | SvIsUV_on(sv); | |
2258 | /* Integer is inaccurate. NOK, IOKp, is UV */ | |
2259 | SvUVX(sv) = UV_MAX; | |
2260 | SvIsUV_on(sv); | |
2261 | } else { | |
2262 | SvUVX(sv) = U_V(SvNVX(sv)); | |
2263 | /* 0xFFFFFFFFFFFFFFFF not an issue in here */ | |
2264 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
2265 | SvIOK_on(sv); | |
28e5dec8 JH |
2266 | SvIsUV_on(sv); |
2267 | } else { | |
c2988b20 NC |
2268 | /* Integer is imprecise. NOK, IOKp, is UV */ |
2269 | SvIsUV_on(sv); | |
28e5dec8 | 2270 | } |
28e5dec8 | 2271 | } |
c2988b20 NC |
2272 | goto ret_iv_max; |
2273 | } | |
28e5dec8 | 2274 | #else /* NV_PRESERVES_UV */ |
c2988b20 NC |
2275 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2276 | == (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) { | |
2277 | /* The IV slot will have been set from value returned by | |
2278 | grok_number above. The NV slot has just been set using | |
2279 | Atof. */ | |
560b0c46 | 2280 | SvNOK_on(sv); |
c2988b20 NC |
2281 | assert (SvIOKp(sv)); |
2282 | } else { | |
2283 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2284 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { | |
2285 | /* Small enough to preserve all bits. */ | |
2286 | (void)SvIOKp_on(sv); | |
2287 | SvNOK_on(sv); | |
2288 | SvIVX(sv) = I_V(SvNVX(sv)); | |
2289 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) | |
2290 | SvIOK_on(sv); | |
2291 | /* Assumption: first non-preserved integer is < IV_MAX, | |
2292 | this NV is in the preserved range, therefore: */ | |
2293 | if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)) | |
2294 | < (UV)IV_MAX)) { | |
32fdb065 | 2295 | 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 |
2296 | } |
2297 | } else { | |
2298 | /* IN_UV NOT_INT | |
2299 | 0 0 already failed to read UV. | |
2300 | 0 1 already failed to read UV. | |
2301 | 1 0 you won't get here in this case. IV/UV | |
2302 | slot set, public IOK, Atof() unneeded. | |
2303 | 1 1 already read UV. | |
2304 | so there's no point in sv_2iuv_non_preserve() attempting | |
2305 | to use atol, strtol, strtoul etc. */ | |
2306 | if (sv_2iuv_non_preserve (sv, numtype) | |
2307 | >= IS_NUMBER_OVERFLOW_IV) | |
2308 | goto ret_iv_max; | |
2309 | } | |
2310 | } | |
28e5dec8 | 2311 | #endif /* NV_PRESERVES_UV */ |
25da4f38 | 2312 | } |
28e5dec8 | 2313 | } else { |
599cee73 | 2314 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) |
1d7c1841 | 2315 | report_uninit(); |
25da4f38 IZ |
2316 | if (SvTYPE(sv) < SVt_IV) |
2317 | /* Typically the caller expects that sv_any is not NULL now. */ | |
2318 | sv_upgrade(sv, SVt_IV); | |
a0d0e21e | 2319 | return 0; |
79072805 | 2320 | } |
1d7c1841 GS |
2321 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n", |
2322 | PTR2UV(sv),SvIVX(sv))); | |
25da4f38 | 2323 | return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv); |
79072805 LW |
2324 | } |
2325 | ||
645c22ef DM |
2326 | /* |
2327 | =for apidoc sv_2uv | |
2328 | ||
2329 | Return the unsigned integer value of an SV, doing any necessary string | |
2330 | conversion, magic etc. Normally used via the C<SvUV(sv)> and C<SvUVx(sv)> | |
2331 | macros. | |
2332 | ||
2333 | =cut | |
2334 | */ | |
2335 | ||
ff68c719 | 2336 | UV |
864dbfa3 | 2337 | Perl_sv_2uv(pTHX_ register SV *sv) |
ff68c719 | 2338 | { |
2339 | if (!sv) | |
2340 | return 0; | |
2341 | if (SvGMAGICAL(sv)) { | |
2342 | mg_get(sv); | |
2343 | if (SvIOKp(sv)) | |
2344 | return SvUVX(sv); | |
2345 | if (SvNOKp(sv)) | |
2346 | return U_V(SvNVX(sv)); | |
36477c24 | 2347 | if (SvPOKp(sv) && SvLEN(sv)) |
2348 | return asUV(sv); | |
3fe9a6f1 | 2349 | if (!SvROK(sv)) { |
d008e5eb | 2350 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2351 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
1d7c1841 | 2352 | report_uninit(); |
c6ee37c5 | 2353 | } |
36477c24 | 2354 | return 0; |
3fe9a6f1 | 2355 | } |
ff68c719 | 2356 | } |
2357 | if (SvTHINKFIRST(sv)) { | |
2358 | if (SvROK(sv)) { | |
ff68c719 | 2359 | SV* tmpstr; |
1554e226 | 2360 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2361 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2362 | return SvUV(tmpstr); |
56431972 | 2363 | return PTR2UV(SvRV(sv)); |
ff68c719 | 2364 | } |
765f542d NC |
2365 | if (SvIsCOW(sv)) { |
2366 | sv_force_normal_flags(sv, 0); | |
8a818333 | 2367 | } |
0336b60e | 2368 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2369 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 | 2370 | report_uninit(); |
ff68c719 | 2371 | return 0; |
2372 | } | |
2373 | } | |
25da4f38 IZ |
2374 | if (SvIOKp(sv)) { |
2375 | if (SvIsUV(sv)) { | |
2376 | return SvUVX(sv); | |
2377 | } | |
2378 | else { | |
2379 | return (UV)SvIVX(sv); | |
2380 | } | |
ff68c719 | 2381 | } |
2382 | if (SvNOKp(sv)) { | |
28e5dec8 JH |
2383 | /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv |
2384 | * without also getting a cached IV/UV from it at the same time | |
2385 | * (ie PV->NV conversion should detect loss of accuracy and cache | |
2386 | * IV or UV at same time to avoid this. */ | |
2387 | /* IV-over-UV optimisation - choose to cache IV if possible */ | |
2388 | ||
25da4f38 IZ |
2389 | if (SvTYPE(sv) == SVt_NV) |
2390 | sv_upgrade(sv, SVt_PVNV); | |
28e5dec8 JH |
2391 | |
2392 | (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */ | |
2393 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
f7bbb42a | 2394 | SvIVX(sv) = I_V(SvNVX(sv)); |
28e5dec8 JH |
2395 | if (SvNVX(sv) == (NV) SvIVX(sv) |
2396 | #ifndef NV_PRESERVES_UV | |
2397 | && (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2398 | (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv))) | |
2399 | /* Don't flag it as "accurately an integer" if the number | |
2400 | came from a (by definition imprecise) NV operation, and | |
2401 | we're outside the range of NV integer precision */ | |
2402 | #endif | |
2403 | ) { | |
2404 | SvIOK_on(sv); /* Can this go wrong with rounding? NWC */ | |
2405 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2406 | "0x%"UVxf" uv(%"NVgf" => %"IVdf") (precise)\n", |
28e5dec8 JH |
2407 | PTR2UV(sv), |
2408 | SvNVX(sv), | |
2409 | SvIVX(sv))); | |
2410 | ||
2411 | } else { | |
2412 | /* IV not precise. No need to convert from PV, as NV | |
2413 | conversion would already have cached IV if it detected | |
2414 | that PV->IV would be better than PV->NV->IV | |
2415 | flags already correct - don't set public IOK. */ | |
2416 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2417 | "0x%"UVxf" uv(%"NVgf" => %"IVdf") (imprecise)\n", |
28e5dec8 JH |
2418 | PTR2UV(sv), |
2419 | SvNVX(sv), | |
2420 | SvIVX(sv))); | |
2421 | } | |
2422 | /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN, | |
2423 | but the cast (NV)IV_MIN rounds to a the value less (more | |
2424 | negative) than IV_MIN which happens to be equal to SvNVX ?? | |
2425 | Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and | |
2426 | NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and | |
2427 | (NV)UVX == NVX are both true, but the values differ. :-( | |
2428 | Hopefully for 2s complement IV_MIN is something like | |
2429 | 0x8000000000000000 which will be exact. NWC */ | |
d460ef45 | 2430 | } |
28e5dec8 JH |
2431 | else { |
2432 | SvUVX(sv) = U_V(SvNVX(sv)); | |
2433 | if ( | |
2434 | (SvNVX(sv) == (NV) SvUVX(sv)) | |
2435 | #ifndef NV_PRESERVES_UV | |
2436 | /* Make sure it's not 0xFFFFFFFFFFFFFFFF */ | |
2437 | /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */ | |
2438 | && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv)) | |
2439 | /* Don't flag it as "accurately an integer" if the number | |
2440 | came from a (by definition imprecise) NV operation, and | |
2441 | we're outside the range of NV integer precision */ | |
2442 | #endif | |
2443 | ) | |
2444 | SvIOK_on(sv); | |
2445 | SvIsUV_on(sv); | |
1c846c1f | 2446 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
28e5dec8 | 2447 | "0x%"UVxf" 2uv(%"UVuf" => %"IVdf") (as unsigned)\n", |
57def98f | 2448 | PTR2UV(sv), |
28e5dec8 JH |
2449 | SvUVX(sv), |
2450 | SvUVX(sv))); | |
25da4f38 | 2451 | } |
ff68c719 | 2452 | } |
2453 | else if (SvPOKp(sv) && SvLEN(sv)) { | |
c2988b20 NC |
2454 | UV value; |
2455 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
25da4f38 IZ |
2456 | |
2457 | /* We want to avoid a possible problem when we cache a UV which | |
2458 | may be later translated to an NV, and the resulting NV is not | |
2459 | the translation of the initial data. | |
1c846c1f | 2460 | |
25da4f38 IZ |
2461 | This means that if we cache such a UV, we need to cache the |
2462 | NV as well. Moreover, we trade speed for space, and do not | |
2463 | cache the NV if not needed. | |
2464 | */ | |
16b7a9a4 | 2465 | |
c2988b20 NC |
2466 | /* SVt_PVNV is one higher than SVt_PVIV, hence this order */ |
2467 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2468 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2469 | /* It's definitely an integer, only upgrade to PVIV */ |
28e5dec8 | 2470 | if (SvTYPE(sv) < SVt_PVIV) |
f7bbb42a JH |
2471 | sv_upgrade(sv, SVt_PVIV); |
2472 | (void)SvIOK_on(sv); | |
c2988b20 NC |
2473 | } else if (SvTYPE(sv) < SVt_PVNV) |
2474 | sv_upgrade(sv, SVt_PVNV); | |
d460ef45 | 2475 | |
c2988b20 NC |
2476 | /* If NV preserves UV then we only use the UV value if we know that |
2477 | we aren't going to call atof() below. If NVs don't preserve UVs | |
2478 | then the value returned may have more precision than atof() will | |
2479 | return, even though it isn't accurate. */ | |
2480 | if ((numtype & (IS_NUMBER_IN_UV | |
2481 | #ifdef NV_PRESERVES_UV | |
2482 | | IS_NUMBER_NOT_INT | |
2483 | #endif | |
2484 | )) == IS_NUMBER_IN_UV) { | |
2485 | /* This won't turn off the public IOK flag if it was set above */ | |
2486 | (void)SvIOKp_on(sv); | |
2487 | ||
2488 | if (!(numtype & IS_NUMBER_NEG)) { | |
2489 | /* positive */; | |
2490 | if (value <= (UV)IV_MAX) { | |
2491 | SvIVX(sv) = (IV)value; | |
28e5dec8 JH |
2492 | } else { |
2493 | /* it didn't overflow, and it was positive. */ | |
c2988b20 | 2494 | SvUVX(sv) = value; |
28e5dec8 JH |
2495 | SvIsUV_on(sv); |
2496 | } | |
c2988b20 NC |
2497 | } else { |
2498 | /* 2s complement assumption */ | |
2499 | if (value <= (UV)IV_MIN) { | |
2500 | SvIVX(sv) = -(IV)value; | |
2501 | } else { | |
2502 | /* Too negative for an IV. This is a double upgrade, but | |
d1be9408 | 2503 | I'm assuming it will be rare. */ |
c2988b20 NC |
2504 | if (SvTYPE(sv) < SVt_PVNV) |
2505 | sv_upgrade(sv, SVt_PVNV); | |
2506 | SvNOK_on(sv); | |
2507 | SvIOK_off(sv); | |
2508 | SvIOKp_on(sv); | |
2509 | SvNVX(sv) = -(NV)value; | |
2510 | SvIVX(sv) = IV_MIN; | |
2511 | } | |
2512 | } | |
2513 | } | |
2514 | ||
2515 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2516 | != IS_NUMBER_IN_UV) { | |
2517 | /* It wasn't an integer, or it overflowed the UV. */ | |
2518 | SvNVX(sv) = Atof(SvPVX(sv)); | |
28e5dec8 | 2519 | |
c2988b20 | 2520 | if (! numtype && ckWARN(WARN_NUMERIC)) |
28e5dec8 JH |
2521 | not_a_number(sv); |
2522 | ||
2523 | #if defined(USE_LONG_DOUBLE) | |
c2988b20 NC |
2524 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%" PERL_PRIgldbl ")\n", |
2525 | PTR2UV(sv), SvNVX(sv))); | |
28e5dec8 | 2526 | #else |
1779d84d | 2527 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"NVgf")\n", |
c2988b20 | 2528 | PTR2UV(sv), SvNVX(sv))); |
28e5dec8 JH |
2529 | #endif |
2530 | ||
2531 | #ifdef NV_PRESERVES_UV | |
c2988b20 NC |
2532 | (void)SvIOKp_on(sv); |
2533 | (void)SvNOK_on(sv); | |
2534 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
2535 | SvIVX(sv) = I_V(SvNVX(sv)); | |
2536 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { | |
2537 | SvIOK_on(sv); | |
2538 | } else { | |
2539 | /* Integer is imprecise. NOK, IOKp */ | |
2540 | } | |
2541 | /* UV will not work better than IV */ | |
2542 | } else { | |
2543 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2544 | SvIsUV_on(sv); | |
2545 | /* Integer is inaccurate. NOK, IOKp, is UV */ | |
2546 | SvUVX(sv) = UV_MAX; | |
2547 | SvIsUV_on(sv); | |
2548 | } else { | |
2549 | SvUVX(sv) = U_V(SvNVX(sv)); | |
2550 | /* 0xFFFFFFFFFFFFFFFF not an issue in here, NVs | |
2551 | NV preservse UV so can do correct comparison. */ | |
2552 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
2553 | SvIOK_on(sv); | |
2554 | SvIsUV_on(sv); | |
2555 | } else { | |
2556 | /* Integer is imprecise. NOK, IOKp, is UV */ | |
2557 | SvIsUV_on(sv); | |
2558 | } | |
2559 | } | |
2560 | } | |
28e5dec8 | 2561 | #else /* NV_PRESERVES_UV */ |
c2988b20 NC |
2562 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2563 | == (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) { | |
2564 | /* The UV slot will have been set from value returned by | |
2565 | grok_number above. The NV slot has just been set using | |
2566 | Atof. */ | |
560b0c46 | 2567 | SvNOK_on(sv); |
c2988b20 NC |
2568 | assert (SvIOKp(sv)); |
2569 | } else { | |
2570 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2571 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { | |
2572 | /* Small enough to preserve all bits. */ | |
2573 | (void)SvIOKp_on(sv); | |
2574 | SvNOK_on(sv); | |
2575 | SvIVX(sv) = I_V(SvNVX(sv)); | |
2576 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) | |
2577 | SvIOK_on(sv); | |
2578 | /* Assumption: first non-preserved integer is < IV_MAX, | |
2579 | this NV is in the preserved range, therefore: */ | |
2580 | if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)) | |
2581 | < (UV)IV_MAX)) { | |
32fdb065 | 2582 | 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 |
2583 | } |
2584 | } else | |
2585 | sv_2iuv_non_preserve (sv, numtype); | |
2586 | } | |
28e5dec8 | 2587 | #endif /* NV_PRESERVES_UV */ |
f7bbb42a | 2588 | } |
ff68c719 | 2589 | } |
2590 | else { | |
d008e5eb | 2591 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2592 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
1d7c1841 | 2593 | report_uninit(); |
c6ee37c5 | 2594 | } |
25da4f38 IZ |
2595 | if (SvTYPE(sv) < SVt_IV) |
2596 | /* Typically the caller expects that sv_any is not NULL now. */ | |
2597 | sv_upgrade(sv, SVt_IV); | |
ff68c719 | 2598 | return 0; |
2599 | } | |
25da4f38 | 2600 | |
1d7c1841 GS |
2601 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n", |
2602 | PTR2UV(sv),SvUVX(sv))); | |
25da4f38 | 2603 | return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv); |
ff68c719 | 2604 | } |
2605 | ||
645c22ef DM |
2606 | /* |
2607 | =for apidoc sv_2nv | |
2608 | ||
2609 | Return the num value of an SV, doing any necessary string or integer | |
2610 | conversion, magic etc. Normally used via the C<SvNV(sv)> and C<SvNVx(sv)> | |
2611 | macros. | |
2612 | ||
2613 | =cut | |
2614 | */ | |
2615 | ||
65202027 | 2616 | NV |
864dbfa3 | 2617 | Perl_sv_2nv(pTHX_ register SV *sv) |
79072805 LW |
2618 | { |
2619 | if (!sv) | |
2620 | return 0.0; | |
8990e307 | 2621 | if (SvGMAGICAL(sv)) { |
463ee0b2 LW |
2622 | mg_get(sv); |
2623 | if (SvNOKp(sv)) | |
2624 | return SvNVX(sv); | |
a0d0e21e | 2625 | if (SvPOKp(sv) && SvLEN(sv)) { |
c2988b20 NC |
2626 | if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && |
2627 | !grok_number(SvPVX(sv), SvCUR(sv), NULL)) | |
a0d0e21e | 2628 | not_a_number(sv); |
097ee67d | 2629 | return Atof(SvPVX(sv)); |
a0d0e21e | 2630 | } |
25da4f38 | 2631 | if (SvIOKp(sv)) { |
1c846c1f | 2632 | if (SvIsUV(sv)) |
65202027 | 2633 | return (NV)SvUVX(sv); |
25da4f38 | 2634 | else |
65202027 | 2635 | return (NV)SvIVX(sv); |
25da4f38 | 2636 | } |
16d20bd9 | 2637 | if (!SvROK(sv)) { |
d008e5eb | 2638 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2639 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
1d7c1841 | 2640 | report_uninit(); |
c6ee37c5 | 2641 | } |
16d20bd9 AD |
2642 | return 0; |
2643 | } | |
463ee0b2 | 2644 | } |
ed6116ce | 2645 | if (SvTHINKFIRST(sv)) { |
a0d0e21e | 2646 | if (SvROK(sv)) { |
a0d0e21e | 2647 | SV* tmpstr; |
1554e226 | 2648 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2649 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2650 | return SvNV(tmpstr); |
56431972 | 2651 | return PTR2NV(SvRV(sv)); |
a0d0e21e | 2652 | } |
765f542d NC |
2653 | if (SvIsCOW(sv)) { |
2654 | sv_force_normal_flags(sv, 0); | |
8a818333 | 2655 | } |
0336b60e | 2656 | if (SvREADONLY(sv) && !SvOK(sv)) { |
599cee73 | 2657 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 | 2658 | report_uninit(); |
ed6116ce LW |
2659 | return 0.0; |
2660 | } | |
79072805 LW |
2661 | } |
2662 | if (SvTYPE(sv) < SVt_NV) { | |
463ee0b2 LW |
2663 | if (SvTYPE(sv) == SVt_IV) |
2664 | sv_upgrade(sv, SVt_PVNV); | |
2665 | else | |
2666 | sv_upgrade(sv, SVt_NV); | |
906f284f | 2667 | #ifdef USE_LONG_DOUBLE |
097ee67d | 2668 | DEBUG_c({ |
f93f4e46 | 2669 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
2670 | PerlIO_printf(Perl_debug_log, |
2671 | "0x%"UVxf" num(%" PERL_PRIgldbl ")\n", | |
2672 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
2673 | RESTORE_NUMERIC_LOCAL(); |
2674 | }); | |
65202027 | 2675 | #else |
572bbb43 | 2676 | DEBUG_c({ |
f93f4e46 | 2677 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 2678 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%"NVgf")\n", |
1d7c1841 | 2679 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
2680 | RESTORE_NUMERIC_LOCAL(); |
2681 | }); | |
572bbb43 | 2682 | #endif |
79072805 LW |
2683 | } |
2684 | else if (SvTYPE(sv) < SVt_PVNV) | |
2685 | sv_upgrade(sv, SVt_PVNV); | |
59d8ce62 NC |
2686 | if (SvNOKp(sv)) { |
2687 | return SvNVX(sv); | |
61604483 | 2688 | } |
59d8ce62 | 2689 | if (SvIOKp(sv)) { |
65202027 | 2690 | SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv); |
28e5dec8 JH |
2691 | #ifdef NV_PRESERVES_UV |
2692 | SvNOK_on(sv); | |
2693 | #else | |
2694 | /* Only set the public NV OK flag if this NV preserves the IV */ | |
2695 | /* Check it's not 0xFFFFFFFFFFFFFFFF */ | |
2696 | if (SvIsUV(sv) ? ((SvUVX(sv) != UV_MAX)&&(SvUVX(sv) == U_V(SvNVX(sv)))) | |
2697 | : (SvIVX(sv) == I_V(SvNVX(sv)))) | |
2698 | SvNOK_on(sv); | |
2699 | else | |
2700 | SvNOKp_on(sv); | |
2701 | #endif | |
93a17b20 | 2702 | } |
748a9306 | 2703 | else if (SvPOKp(sv) && SvLEN(sv)) { |
c2988b20 NC |
2704 | UV value; |
2705 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
2706 | if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !numtype) | |
a0d0e21e | 2707 | not_a_number(sv); |
28e5dec8 | 2708 | #ifdef NV_PRESERVES_UV |
c2988b20 NC |
2709 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2710 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2711 | /* It's definitely an integer */ |
c2988b20 NC |
2712 | SvNVX(sv) = (numtype & IS_NUMBER_NEG) ? -(NV)value : (NV)value; |
2713 | } else | |
2714 | SvNVX(sv) = Atof(SvPVX(sv)); | |
28e5dec8 JH |
2715 | SvNOK_on(sv); |
2716 | #else | |
c2988b20 | 2717 | SvNVX(sv) = Atof(SvPVX(sv)); |
28e5dec8 JH |
2718 | /* Only set the public NV OK flag if this NV preserves the value in |
2719 | the PV at least as well as an IV/UV would. | |
2720 | Not sure how to do this 100% reliably. */ | |
2721 | /* if that shift count is out of range then Configure's test is | |
2722 | wonky. We shouldn't be in here with NV_PRESERVES_UV_BITS == | |
2723 | UV_BITS */ | |
2724 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
c2988b20 | 2725 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { |
28e5dec8 | 2726 | SvNOK_on(sv); /* Definitely small enough to preserve all bits */ |
c2988b20 NC |
2727 | } else if (!(numtype & IS_NUMBER_IN_UV)) { |
2728 | /* Can't use strtol etc to convert this string, so don't try. | |
2729 | sv_2iv and sv_2uv will use the NV to convert, not the PV. */ | |
2730 | SvNOK_on(sv); | |
2731 | } else { | |
2732 | /* value has been set. It may not be precise. */ | |
2733 | if ((numtype & IS_NUMBER_NEG) && (value > (UV)IV_MIN)) { | |
2734 | /* 2s complement assumption for (UV)IV_MIN */ | |
2735 | SvNOK_on(sv); /* Integer is too negative. */ | |
2736 | } else { | |
2737 | SvNOKp_on(sv); | |
2738 | SvIOKp_on(sv); | |
6fa402ec | 2739 | |
c2988b20 NC |
2740 | if (numtype & IS_NUMBER_NEG) { |
2741 | SvIVX(sv) = -(IV)value; | |
2742 | } else if (value <= (UV)IV_MAX) { | |
2743 | SvIVX(sv) = (IV)value; | |
2744 | } else { | |
2745 | SvUVX(sv) = value; | |
2746 | SvIsUV_on(sv); | |
2747 | } | |
2748 | ||
2749 | if (numtype & IS_NUMBER_NOT_INT) { | |
2750 | /* I believe that even if the original PV had decimals, | |
2751 | they are lost beyond the limit of the FP precision. | |
2752 | However, neither is canonical, so both only get p | |
2753 | flags. NWC, 2000/11/25 */ | |
2754 | /* Both already have p flags, so do nothing */ | |
2755 | } else { | |
2756 | NV nv = SvNVX(sv); | |
2757 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
2758 | if (SvIVX(sv) == I_V(nv)) { | |
2759 | SvNOK_on(sv); | |
2760 | SvIOK_on(sv); | |
2761 | } else { | |
2762 | SvIOK_on(sv); | |
2763 | /* It had no "." so it must be integer. */ | |
2764 | } | |
2765 | } else { | |
2766 | /* between IV_MAX and NV(UV_MAX). | |
2767 | Could be slightly > UV_MAX */ | |
6fa402ec | 2768 | |
c2988b20 NC |
2769 | if (numtype & IS_NUMBER_NOT_INT) { |
2770 | /* UV and NV both imprecise. */ | |
2771 | } else { | |
2772 | UV nv_as_uv = U_V(nv); | |
2773 | ||
2774 | if (value == nv_as_uv && SvUVX(sv) != UV_MAX) { | |
2775 | SvNOK_on(sv); | |
2776 | SvIOK_on(sv); | |
2777 | } else { | |
2778 | SvIOK_on(sv); | |
2779 | } | |
2780 | } | |
2781 | } | |
2782 | } | |
2783 | } | |
2784 | } | |
28e5dec8 | 2785 | #endif /* NV_PRESERVES_UV */ |
93a17b20 | 2786 | } |
79072805 | 2787 | else { |
599cee73 | 2788 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) |
1d7c1841 | 2789 | report_uninit(); |
25da4f38 IZ |
2790 | if (SvTYPE(sv) < SVt_NV) |
2791 | /* Typically the caller expects that sv_any is not NULL now. */ | |
28e5dec8 JH |
2792 | /* XXX Ilya implies that this is a bug in callers that assume this |
2793 | and ideally should be fixed. */ | |
25da4f38 | 2794 | sv_upgrade(sv, SVt_NV); |
a0d0e21e | 2795 | return 0.0; |
79072805 | 2796 | } |
572bbb43 | 2797 | #if defined(USE_LONG_DOUBLE) |
097ee67d | 2798 | DEBUG_c({ |
f93f4e46 | 2799 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
2800 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n", |
2801 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
2802 | RESTORE_NUMERIC_LOCAL(); |
2803 | }); | |
65202027 | 2804 | #else |
572bbb43 | 2805 | DEBUG_c({ |
f93f4e46 | 2806 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 2807 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%"NVgf")\n", |
1d7c1841 | 2808 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
2809 | RESTORE_NUMERIC_LOCAL(); |
2810 | }); | |
572bbb43 | 2811 | #endif |
463ee0b2 | 2812 | return SvNVX(sv); |
79072805 LW |
2813 | } |
2814 | ||
645c22ef DM |
2815 | /* asIV(): extract an integer from the string value of an SV. |
2816 | * Caller must validate PVX */ | |
2817 | ||
76e3520e | 2818 | STATIC IV |
cea2e8a9 | 2819 | S_asIV(pTHX_ SV *sv) |
36477c24 | 2820 | { |
c2988b20 NC |
2821 | UV value; |
2822 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
2823 | ||
2824 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2825 | == IS_NUMBER_IN_UV) { | |
645c22ef | 2826 | /* It's definitely an integer */ |
c2988b20 NC |
2827 | if (numtype & IS_NUMBER_NEG) { |
2828 | if (value < (UV)IV_MIN) | |
2829 | return -(IV)value; | |
2830 | } else { | |
2831 | if (value < (UV)IV_MAX) | |
2832 | return (IV)value; | |
2833 | } | |
2834 | } | |
d008e5eb | 2835 | if (!numtype) { |
d008e5eb GS |
2836 | if (ckWARN(WARN_NUMERIC)) |
2837 | not_a_number(sv); | |
2838 | } | |
c2988b20 | 2839 | return I_V(Atof(SvPVX(sv))); |
36477c24 | 2840 | } |
2841 | ||
645c22ef DM |
2842 | /* asUV(): extract an unsigned integer from the string value of an SV |
2843 | * Caller must validate PVX */ | |
2844 | ||
76e3520e | 2845 | STATIC UV |
cea2e8a9 | 2846 | S_asUV(pTHX_ SV *sv) |
36477c24 | 2847 | { |
c2988b20 NC |
2848 | UV value; |
2849 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
36477c24 | 2850 | |
c2988b20 NC |
2851 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2852 | == IS_NUMBER_IN_UV) { | |
645c22ef | 2853 | /* It's definitely an integer */ |
6fa402ec | 2854 | if (!(numtype & IS_NUMBER_NEG)) |
c2988b20 NC |
2855 | return value; |
2856 | } | |
d008e5eb | 2857 | if (!numtype) { |
d008e5eb GS |
2858 | if (ckWARN(WARN_NUMERIC)) |
2859 | not_a_number(sv); | |
2860 | } | |
097ee67d | 2861 | return U_V(Atof(SvPVX(sv))); |
36477c24 | 2862 | } |
2863 | ||
645c22ef DM |
2864 | /* |
2865 | =for apidoc sv_2pv_nolen | |
2866 | ||
2867 | Like C<sv_2pv()>, but doesn't return the length too. You should usually | |
2868 | use the macro wrapper C<SvPV_nolen(sv)> instead. | |
2869 | =cut | |
2870 | */ | |
2871 | ||
79072805 | 2872 | char * |
864dbfa3 | 2873 | Perl_sv_2pv_nolen(pTHX_ register SV *sv) |
1fa8b10d JD |
2874 | { |
2875 | STRLEN n_a; | |
2876 | return sv_2pv(sv, &n_a); | |
2877 | } | |
2878 | ||
645c22ef DM |
2879 | /* uiv_2buf(): private routine for use by sv_2pv_flags(): print an IV or |
2880 | * UV as a string towards the end of buf, and return pointers to start and | |
2881 | * end of it. | |
2882 | * | |
2883 | * We assume that buf is at least TYPE_CHARS(UV) long. | |
2884 | */ | |
2885 | ||
864dbfa3 | 2886 | static char * |
25da4f38 IZ |
2887 | uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob) |
2888 | { | |
25da4f38 IZ |
2889 | char *ptr = buf + TYPE_CHARS(UV); |
2890 | char *ebuf = ptr; | |
2891 | int sign; | |
25da4f38 IZ |
2892 | |
2893 | if (is_uv) | |
2894 | sign = 0; | |
2895 | else if (iv >= 0) { | |
2896 | uv = iv; | |
2897 | sign = 0; | |
2898 | } else { | |
2899 | uv = -iv; | |
2900 | sign = 1; | |
2901 | } | |
2902 | do { | |
eb160463 | 2903 | *--ptr = '0' + (char)(uv % 10); |
25da4f38 IZ |
2904 | } while (uv /= 10); |
2905 | if (sign) | |
2906 | *--ptr = '-'; | |
2907 | *peob = ebuf; | |
2908 | return ptr; | |
2909 | } | |
2910 | ||
09540bc3 JH |
2911 | /* sv_2pv() is now a macro using Perl_sv_2pv_flags(); |
2912 | * this function provided for binary compatibility only | |
2913 | */ | |
2914 | ||
2915 | char * | |
2916 | Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp) | |
2917 | { | |
2918 | return sv_2pv_flags(sv, lp, SV_GMAGIC); | |
2919 | } | |
2920 | ||
645c22ef DM |
2921 | /* |
2922 | =for apidoc sv_2pv_flags | |
2923 | ||
ff276b08 | 2924 | Returns a pointer to the string value of an SV, and sets *lp to its length. |
645c22ef DM |
2925 | If flags includes SV_GMAGIC, does an mg_get() first. Coerces sv to a string |
2926 | if necessary. | |
2927 | Normally invoked via the C<SvPV_flags> macro. C<sv_2pv()> and C<sv_2pv_nomg> | |
2928 | usually end up here too. | |
2929 | ||
2930 | =cut | |
2931 | */ | |
2932 | ||
8d6d96c1 HS |
2933 | char * |
2934 | Perl_sv_2pv_flags(pTHX_ register SV *sv, STRLEN *lp, I32 flags) | |
2935 | { | |
79072805 LW |
2936 | register char *s; |
2937 | int olderrno; | |
cb50f42d | 2938 | SV *tsv, *origsv; |
25da4f38 IZ |
2939 | char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */ |
2940 | char *tmpbuf = tbuf; | |
79072805 | 2941 | |
463ee0b2 LW |
2942 | if (!sv) { |
2943 | *lp = 0; | |
2944 | return ""; | |
2945 | } | |
8990e307 | 2946 | if (SvGMAGICAL(sv)) { |
8d6d96c1 HS |
2947 | if (flags & SV_GMAGIC) |
2948 | mg_get(sv); | |
463ee0b2 LW |
2949 | if (SvPOKp(sv)) { |
2950 | *lp = SvCUR(sv); | |
2951 | return SvPVX(sv); | |
2952 | } | |
cf2093f6 | 2953 | if (SvIOKp(sv)) { |
1c846c1f | 2954 | if (SvIsUV(sv)) |
57def98f | 2955 | (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv)); |
cf2093f6 | 2956 | else |
57def98f | 2957 | (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv)); |
46fc3d4c | 2958 | tsv = Nullsv; |
a0d0e21e | 2959 | goto tokensave; |
463ee0b2 LW |
2960 | } |
2961 | if (SvNOKp(sv)) { | |
2d4389e4 | 2962 | Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf); |
46fc3d4c | 2963 | tsv = Nullsv; |
a0d0e21e | 2964 | goto tokensave; |
463ee0b2 | 2965 | } |
16d20bd9 | 2966 | if (!SvROK(sv)) { |
d008e5eb | 2967 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2968 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
1d7c1841 | 2969 | report_uninit(); |
c6ee37c5 | 2970 | } |
16d20bd9 AD |
2971 | *lp = 0; |
2972 | return ""; | |
2973 | } | |
463ee0b2 | 2974 | } |
ed6116ce LW |
2975 | if (SvTHINKFIRST(sv)) { |
2976 | if (SvROK(sv)) { | |
a0d0e21e | 2977 | SV* tmpstr; |
1554e226 | 2978 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) && |
b4b9a328 | 2979 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) { |
446eaa42 YST |
2980 | char *pv = SvPV(tmpstr, *lp); |
2981 | if (SvUTF8(tmpstr)) | |
2982 | SvUTF8_on(sv); | |
2983 | else | |
2984 | SvUTF8_off(sv); | |
2985 | return pv; | |
2986 | } | |
cb50f42d | 2987 | origsv = sv; |
ed6116ce LW |
2988 | sv = (SV*)SvRV(sv); |
2989 | if (!sv) | |
2990 | s = "NULLREF"; | |
2991 | else { | |
f9277f47 IZ |
2992 | MAGIC *mg; |
2993 | ||
ed6116ce | 2994 | switch (SvTYPE(sv)) { |
f9277f47 IZ |
2995 | case SVt_PVMG: |
2996 | if ( ((SvFLAGS(sv) & | |
1c846c1f | 2997 | (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG)) |
faf82a0b | 2998 | == (SVs_OBJECT|SVs_SMG)) |
14befaf4 | 2999 | && (mg = mg_find(sv, PERL_MAGIC_qr))) { |
2cd61cdb | 3000 | regexp *re = (regexp *)mg->mg_obj; |
1bd3ad17 | 3001 | |
2cd61cdb | 3002 | if (!mg->mg_ptr) { |
8782bef2 GB |
3003 | char *fptr = "msix"; |
3004 | char reflags[6]; | |
3005 | char ch; | |
3006 | int left = 0; | |
3007 | int right = 4; | |
ff385a1b | 3008 | char need_newline = 0; |
eb160463 | 3009 | U16 reganch = (U16)((re->reganch & PMf_COMPILETIME) >> 12); |
8782bef2 | 3010 | |
155aba94 | 3011 | while((ch = *fptr++)) { |
8782bef2 GB |
3012 | if(reganch & 1) { |
3013 | reflags[left++] = ch; | |
3014 | } | |
3015 | else { | |
3016 | reflags[right--] = ch; | |
3017 | } | |
3018 | reganch >>= 1; | |
3019 | } | |
3020 | if(left != 4) { | |
3021 | reflags[left] = '-'; | |
3022 | left = 5; | |
3023 | } | |
3024 | ||
3025 | mg->mg_len = re->prelen + 4 + left; | |
ff385a1b JF |
3026 | /* |
3027 | * If /x was used, we have to worry about a regex | |
3028 | * ending with a comment later being embedded | |
3029 | * within another regex. If so, we don't want this | |
3030 | * regex's "commentization" to leak out to the | |
3031 | * right part of the enclosing regex, we must cap | |
3032 | * it with a newline. | |
3033 | * | |
3034 | * So, if /x was used, we scan backwards from the | |
3035 | * end of the regex. If we find a '#' before we | |
3036 | * find a newline, we need to add a newline | |
3037 | * ourself. If we find a '\n' first (or if we | |
3038 | * don't find '#' or '\n'), we don't need to add | |
3039 | * anything. -jfriedl | |
3040 | */ | |
3041 | if (PMf_EXTENDED & re->reganch) | |
3042 | { | |
3043 | char *endptr = re->precomp + re->prelen; | |
3044 | while (endptr >= re->precomp) | |
3045 | { | |
3046 | char c = *(endptr--); | |
3047 | if (c == '\n') | |
3048 | break; /* don't need another */ | |
3049 | if (c == '#') { | |
3050 | /* we end while in a comment, so we | |
3051 | need a newline */ | |
3052 | mg->mg_len++; /* save space for it */ | |
3053 | need_newline = 1; /* note to add it */ | |
ab01544f | 3054 | break; |
ff385a1b JF |
3055 | } |
3056 | } | |
3057 | } | |
3058 | ||
8782bef2 GB |
3059 | New(616, mg->mg_ptr, mg->mg_len + 1 + left, char); |
3060 | Copy("(?", mg->mg_ptr, 2, char); | |
3061 | Copy(reflags, mg->mg_ptr+2, left, char); | |
3062 | Copy(":", mg->mg_ptr+left+2, 1, char); | |
3063 | Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char); | |
ff385a1b JF |
3064 | if (need_newline) |
3065 | mg->mg_ptr[mg->mg_len - 2] = '\n'; | |
1bd3ad17 IZ |
3066 | mg->mg_ptr[mg->mg_len - 1] = ')'; |
3067 | mg->mg_ptr[mg->mg_len] = 0; | |
3068 | } | |
3280af22 | 3069 | PL_reginterp_cnt += re->program[0].next_off; |
cb50f42d YST |
3070 | |
3071 | if (re->reganch & ROPT_UTF8) | |
3072 | SvUTF8_on(origsv); | |
3073 | else | |
3074 | SvUTF8_off(origsv); | |
1bd3ad17 IZ |
3075 | *lp = mg->mg_len; |
3076 | return mg->mg_ptr; | |
f9277f47 IZ |
3077 | } |
3078 | /* Fall through */ | |
ed6116ce LW |
3079 | case SVt_NULL: |
3080 | case SVt_IV: | |
3081 | case SVt_NV: | |
3082 | case SVt_RV: | |
3083 | case SVt_PV: | |
3084 | case SVt_PVIV: | |
3085 | case SVt_PVNV: | |
81689caa HS |
3086 | case SVt_PVBM: if (SvROK(sv)) |
3087 | s = "REF"; | |
3088 | else | |
3089 | s = "SCALAR"; break; | |
dd28f7bb | 3090 | case SVt_PVLV: s = SvROK(sv) ? "REF":"LVALUE"; break; |
ed6116ce LW |
3091 | case SVt_PVAV: s = "ARRAY"; break; |
3092 | case SVt_PVHV: s = "HASH"; break; | |
3093 | case SVt_PVCV: s = "CODE"; break; | |
3094 | case SVt_PVGV: s = "GLOB"; break; | |
1d2dff63 | 3095 | case SVt_PVFM: s = "FORMAT"; break; |
36477c24 | 3096 | case SVt_PVIO: s = "IO"; break; |
ed6116ce LW |
3097 | default: s = "UNKNOWN"; break; |
3098 | } | |
46fc3d4c | 3099 | tsv = NEWSV(0,0); |
de11ba31 | 3100 | if (SvOBJECT(sv)) |
e27ad1f2 AV |
3101 | if (HvNAME(SvSTASH(sv))) |
3102 | Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s); | |
3103 | else | |
3104 | Perl_sv_setpvf(aTHX_ tsv, "__ANON__=%s", s); | |
ed6116ce | 3105 | else |
46fc3d4c | 3106 | sv_setpv(tsv, s); |
57def98f | 3107 | Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv)); |
a0d0e21e | 3108 | goto tokensaveref; |
463ee0b2 | 3109 | } |
ed6116ce LW |
3110 | *lp = strlen(s); |
3111 | return s; | |
79072805 | 3112 | } |
0336b60e | 3113 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 3114 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 | 3115 | report_uninit(); |
ed6116ce LW |
3116 | *lp = 0; |
3117 | return ""; | |
79072805 | 3118 | } |
79072805 | 3119 | } |
28e5dec8 JH |
3120 | if (SvIOK(sv) || ((SvIOKp(sv) && !SvNOKp(sv)))) { |
3121 | /* I'm assuming that if both IV and NV are equally valid then | |
3122 | converting the IV is going to be more efficient */ | |
3123 | U32 isIOK = SvIOK(sv); | |
3124 | U32 isUIOK = SvIsUV(sv); | |
3125 | char buf[TYPE_CHARS(UV)]; | |
3126 | char *ebuf, *ptr; | |
3127 | ||
3128 | if (SvTYPE(sv) < SVt_PVIV) | |
3129 | sv_upgrade(sv, SVt_PVIV); | |
3130 | if (isUIOK) | |
3131 | ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf); | |
3132 | else | |
3133 | ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf); | |
eb160463 | 3134 | SvGROW(sv, (STRLEN)(ebuf - ptr + 1)); /* inlined from sv_setpvn */ |
28e5dec8 JH |
3135 | Move(ptr,SvPVX(sv),ebuf - ptr,char); |
3136 | SvCUR_set(sv, ebuf - ptr); | |
3137 | s = SvEND(sv); | |
3138 | *s = '\0'; | |
3139 | if (isIOK) | |
3140 | SvIOK_on(sv); | |
3141 | else | |
3142 | SvIOKp_on(sv); | |
3143 | if (isUIOK) | |
3144 | SvIsUV_on(sv); | |
3145 | } | |
3146 | else if (SvNOKp(sv)) { | |
79072805 LW |
3147 | if (SvTYPE(sv) < SVt_PVNV) |
3148 | sv_upgrade(sv, SVt_PVNV); | |
1c846c1f | 3149 | /* The +20 is pure guesswork. Configure test needed. --jhi */ |
59155cc0 | 3150 | SvGROW(sv, NV_DIG + 20); |
463ee0b2 | 3151 | s = SvPVX(sv); |
79072805 | 3152 | olderrno = errno; /* some Xenix systems wipe out errno here */ |
79072805 | 3153 | #ifdef apollo |
463ee0b2 | 3154 | if (SvNVX(sv) == 0.0) |
79072805 LW |
3155 | (void)strcpy(s,"0"); |
3156 | else | |
3157 | #endif /*apollo*/ | |
bbce6d69 | 3158 | { |
2d4389e4 | 3159 | Gconvert(SvNVX(sv), NV_DIG, 0, s); |
bbce6d69 | 3160 | } |
79072805 | 3161 | errno = olderrno; |
a0d0e21e LW |
3162 | #ifdef FIXNEGATIVEZERO |
3163 | if (*s == '-' && s[1] == '0' && !s[2]) | |
3164 | strcpy(s,"0"); | |
3165 | #endif | |
79072805 LW |
3166 | while (*s) s++; |
3167 | #ifdef hcx | |
3168 | if (s[-1] == '.') | |
46fc3d4c | 3169 | *--s = '\0'; |
79072805 LW |
3170 | #endif |
3171 | } | |
79072805 | 3172 | else { |
0336b60e IZ |
3173 | if (ckWARN(WARN_UNINITIALIZED) |
3174 | && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) | |
1d7c1841 | 3175 | report_uninit(); |
a0d0e21e | 3176 | *lp = 0; |
25da4f38 IZ |
3177 | if (SvTYPE(sv) < SVt_PV) |
3178 | /* Typically the caller expects that sv_any is not NULL now. */ | |
3179 | sv_upgrade(sv, SVt_PV); | |
a0d0e21e | 3180 | return ""; |
79072805 | 3181 | } |
463ee0b2 LW |
3182 | *lp = s - SvPVX(sv); |
3183 | SvCUR_set(sv, *lp); | |
79072805 | 3184 | SvPOK_on(sv); |
1d7c1841 GS |
3185 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
3186 | PTR2UV(sv),SvPVX(sv))); | |
463ee0b2 | 3187 | return SvPVX(sv); |
a0d0e21e LW |
3188 | |
3189 | tokensave: | |
3190 | if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */ | |
3191 | /* Sneaky stuff here */ | |
3192 | ||
3193 | tokensaveref: | |
46fc3d4c | 3194 | if (!tsv) |
96827780 | 3195 | tsv = newSVpv(tmpbuf, 0); |
46fc3d4c | 3196 | sv_2mortal(tsv); |
3197 | *lp = SvCUR(tsv); | |
3198 | return SvPVX(tsv); | |
a0d0e21e LW |
3199 | } |
3200 | else { | |
3201 | STRLEN len; | |
46fc3d4c | 3202 | char *t; |
3203 | ||
3204 | if (tsv) { | |
3205 | sv_2mortal(tsv); | |
3206 | t = SvPVX(tsv); | |
3207 | len = SvCUR(tsv); | |
3208 | } | |
3209 | else { | |
96827780 MB |
3210 | t = tmpbuf; |
3211 | len = strlen(tmpbuf); | |
46fc3d4c | 3212 | } |
a0d0e21e | 3213 | #ifdef FIXNEGATIVEZERO |
46fc3d4c | 3214 | if (len == 2 && t[0] == '-' && t[1] == '0') { |
3215 | t = "0"; | |
3216 | len = 1; | |
3217 | } | |
a0d0e21e LW |
3218 | #endif |
3219 | (void)SvUPGRADE(sv, SVt_PV); | |
46fc3d4c | 3220 | *lp = len; |
a0d0e21e LW |
3221 | s = SvGROW(sv, len + 1); |
3222 | SvCUR_set(sv, len); | |
46fc3d4c | 3223 | (void)strcpy(s, t); |
6bf554b4 | 3224 | SvPOKp_on(sv); |
a0d0e21e LW |
3225 | return s; |
3226 | } | |
463ee0b2 LW |
3227 | } |
3228 | ||
645c22ef | 3229 | /* |
6050d10e JP |
3230 | =for apidoc sv_copypv |
3231 | ||
3232 | Copies a stringified representation of the source SV into the | |
3233 | destination SV. Automatically performs any necessary mg_get and | |
54f0641b | 3234 | coercion of numeric values into strings. Guaranteed to preserve |
6050d10e | 3235 | UTF-8 flag even from overloaded objects. Similar in nature to |
54f0641b NIS |
3236 | sv_2pv[_flags] but operates directly on an SV instead of just the |
3237 | string. Mostly uses sv_2pv_flags to do its work, except when that | |
6050d10e JP |
3238 | would lose the UTF-8'ness of the PV. |
3239 | ||
3240 | =cut | |
3241 | */ | |
3242 | ||
3243 | void | |
3244 | Perl_sv_copypv(pTHX_ SV *dsv, register SV *ssv) | |
3245 | { | |
446eaa42 YST |
3246 | STRLEN len; |
3247 | char *s; | |
3248 | s = SvPV(ssv,len); | |
cb50f42d | 3249 | sv_setpvn(dsv,s,len); |
446eaa42 | 3250 | if (SvUTF8(ssv)) |
cb50f42d | 3251 | SvUTF8_on(dsv); |
446eaa42 | 3252 | else |
cb50f42d | 3253 | SvUTF8_off(dsv); |
6050d10e JP |
3254 | } |
3255 | ||
3256 | /* | |
645c22ef DM |
3257 | =for apidoc sv_2pvbyte_nolen |
3258 | ||
3259 | Return a pointer to the byte-encoded representation of the SV. | |
3260 | May cause the SV to be downgraded from UTF8 as a side-effect. | |
3261 | ||
3262 | Usually accessed via the C<SvPVbyte_nolen> macro. | |
3263 | ||
3264 | =cut | |
3265 | */ | |
3266 | ||
7340a771 GS |
3267 | char * |
3268 | Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv) | |
3269 | { | |
560a288e GS |
3270 | STRLEN n_a; |
3271 | return sv_2pvbyte(sv, &n_a); | |
7340a771 GS |
3272 | } |
3273 | ||
645c22ef DM |
3274 | /* |
3275 | =for apidoc sv_2pvbyte | |
3276 | ||
3277 | Return a pointer to the byte-encoded representation of the SV, and set *lp | |
3278 | to its length. May cause the SV to be downgraded from UTF8 as a | |
3279 | side-effect. | |
3280 | ||
3281 | Usually accessed via the C<SvPVbyte> macro. | |
3282 | ||
3283 | =cut | |
3284 | */ | |
3285 | ||
7340a771 GS |
3286 | char * |
3287 | Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp) | |
3288 | { | |
0875d2fe NIS |
3289 | sv_utf8_downgrade(sv,0); |
3290 | return SvPV(sv,*lp); | |
7340a771 GS |
3291 | } |
3292 | ||
645c22ef DM |
3293 | /* |
3294 | =for apidoc sv_2pvutf8_nolen | |
3295 | ||
3296 | Return a pointer to the UTF8-encoded representation of the SV. | |
3297 | May cause the SV to be upgraded to UTF8 as a side-effect. | |
3298 | ||
3299 | Usually accessed via the C<SvPVutf8_nolen> macro. | |
3300 | ||
3301 | =cut | |
3302 | */ | |
3303 | ||
7340a771 GS |
3304 | char * |
3305 | Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv) | |
3306 | { | |
560a288e GS |
3307 | STRLEN n_a; |
3308 | return sv_2pvutf8(sv, &n_a); | |
7340a771 GS |
3309 | } |
3310 | ||
645c22ef DM |
3311 | /* |
3312 | =for apidoc sv_2pvutf8 | |
3313 | ||
3314 | Return a pointer to the UTF8-encoded representation of the SV, and set *lp | |
3315 | to its length. May cause the SV to be upgraded to UTF8 as a side-effect. | |
3316 | ||
3317 | Usually accessed via the C<SvPVutf8> macro. | |
3318 | ||
3319 | =cut | |
3320 | */ | |
3321 | ||
7340a771 GS |
3322 | char * |
3323 | Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp) | |
3324 | { | |
560a288e | 3325 | sv_utf8_upgrade(sv); |
7d59b7e4 | 3326 | return SvPV(sv,*lp); |
7340a771 | 3327 | } |
1c846c1f | 3328 | |
645c22ef DM |
3329 | /* |
3330 | =for apidoc sv_2bool | |
3331 | ||
3332 | This function is only called on magical items, and is only used by | |
8cf8f3d1 | 3333 | sv_true() or its macro equivalent. |
645c22ef DM |
3334 | |
3335 | =cut | |
3336 | */ | |
3337 | ||
463ee0b2 | 3338 | bool |
864dbfa3 | 3339 | Perl_sv_2bool(pTHX_ register SV *sv) |
463ee0b2 | 3340 | { |
8990e307 | 3341 | if (SvGMAGICAL(sv)) |
463ee0b2 LW |
3342 | mg_get(sv); |
3343 | ||
a0d0e21e LW |
3344 | if (!SvOK(sv)) |
3345 | return 0; | |
3346 | if (SvROK(sv)) { | |
a0d0e21e | 3347 | SV* tmpsv; |
1554e226 | 3348 | if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) && |
9e3013b1 | 3349 | (!SvROK(tmpsv) || (SvRV(tmpsv) != SvRV(sv)))) |
8a31060d | 3350 | return (bool)SvTRUE(tmpsv); |
a0d0e21e LW |
3351 | return SvRV(sv) != 0; |
3352 | } | |
463ee0b2 | 3353 | if (SvPOKp(sv)) { |
11343788 MB |
3354 | register XPV* Xpvtmp; |
3355 | if ((Xpvtmp = (XPV*)SvANY(sv)) && | |
3356 | (*Xpvtmp->xpv_pv > '0' || | |
3357 | Xpvtmp->xpv_cur > 1 || | |
3358 | (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0'))) | |
463ee0b2 LW |
3359 | return 1; |
3360 | else | |
3361 | return 0; | |
3362 | } | |
3363 | else { | |
3364 | if (SvIOKp(sv)) | |
3365 | return SvIVX(sv) != 0; | |
3366 | else { | |
3367 | if (SvNOKp(sv)) | |
3368 | return SvNVX(sv) != 0.0; | |
3369 | else | |
3370 | return FALSE; | |
3371 | } | |
3372 | } | |
79072805 LW |
3373 | } |
3374 | ||
09540bc3 JH |
3375 | /* sv_utf8_upgrade() is now a macro using sv_utf8_upgrade_flags(); |
3376 | * this function provided for binary compatibility only | |
3377 | */ | |
3378 | ||
3379 | ||
3380 | STRLEN | |
3381 | Perl_sv_utf8_upgrade(pTHX_ register SV *sv) | |
3382 | { | |
3383 | return sv_utf8_upgrade_flags(sv, SV_GMAGIC); | |
3384 | } | |
3385 | ||
c461cf8f JH |
3386 | /* |
3387 | =for apidoc sv_utf8_upgrade | |
3388 | ||
3389 | Convert the PV of an SV to its UTF8-encoded form. | |
645c22ef | 3390 | Forces the SV to string form if it is not already. |
4411f3b6 NIS |
3391 | Always sets the SvUTF8 flag to avoid future validity checks even |
3392 | if all the bytes have hibit clear. | |
c461cf8f | 3393 | |
13a6c0e0 JH |
3394 | This is not as a general purpose byte encoding to Unicode interface: |
3395 | use the Encode extension for that. | |
3396 | ||
8d6d96c1 HS |
3397 | =for apidoc sv_utf8_upgrade_flags |
3398 | ||
3399 | Convert the PV of an SV to its UTF8-encoded form. | |
645c22ef | 3400 | Forces the SV to string form if it is not already. |
8d6d96c1 HS |
3401 | Always sets the SvUTF8 flag to avoid future validity checks even |
3402 | if all the bytes have hibit clear. If C<flags> has C<SV_GMAGIC> bit set, | |
3403 | will C<mg_get> on C<sv> if appropriate, else not. C<sv_utf8_upgrade> and | |
3404 | C<sv_utf8_upgrade_nomg> are implemented in terms of this function. | |
3405 | ||
13a6c0e0 JH |
3406 | This is not as a general purpose byte encoding to Unicode interface: |
3407 | use the Encode extension for that. | |
3408 | ||
8d6d96c1 HS |
3409 | =cut |
3410 | */ | |
3411 | ||
3412 | STRLEN | |
3413 | Perl_sv_utf8_upgrade_flags(pTHX_ register SV *sv, I32 flags) | |
3414 | { | |
db42d148 | 3415 | U8 *s, *t, *e; |
511c2ff0 | 3416 | int hibit = 0; |
560a288e | 3417 | |
4411f3b6 NIS |
3418 | if (!sv) |
3419 | return 0; | |
3420 | ||
e0e62c2a NIS |
3421 | if (!SvPOK(sv)) { |
3422 | STRLEN len = 0; | |
8d6d96c1 | 3423 | (void) sv_2pv_flags(sv,&len, flags); |
e0e62c2a NIS |
3424 | if (!SvPOK(sv)) |
3425 | return len; | |
3426 | } | |
4411f3b6 NIS |
3427 | |
3428 | if (SvUTF8(sv)) | |
3429 | return SvCUR(sv); | |
560a288e | 3430 | |
765f542d NC |
3431 | if (SvIsCOW(sv)) { |
3432 | sv_force_normal_flags(sv, 0); | |
db42d148 NIS |
3433 | } |
3434 | ||
88632417 | 3435 | if (PL_encoding && !(flags & SV_UTF8_NO_ENCODING)) |
799ef3cb | 3436 | sv_recode_to_utf8(sv, PL_encoding); |
9f4817db | 3437 | else { /* Assume Latin-1/EBCDIC */ |
0a378802 JH |
3438 | /* This function could be much more efficient if we |
3439 | * had a FLAG in SVs to signal if there are any hibit | |
3440 | * chars in the PV. Given that there isn't such a flag | |
3441 | * make the loop as fast as possible. */ | |
3442 | s = (U8 *) SvPVX(sv); | |
3443 | e = (U8 *) SvEND(sv); | |
3444 | t = s; | |
3445 | while (t < e) { | |
3446 | U8 ch = *t++; | |
3447 | if ((hibit = !NATIVE_IS_INVARIANT(ch))) | |
3448 | break; | |
3449 | } | |
3450 | if (hibit) { | |
3451 | STRLEN len; | |
ecdeb87c | 3452 | |
0a378802 JH |
3453 | len = SvCUR(sv) + 1; /* Plus the \0 */ |
3454 | SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len); | |
3455 | SvCUR(sv) = len - 1; | |
3456 | if (SvLEN(sv) != 0) | |
3457 | Safefree(s); /* No longer using what was there before. */ | |
3458 | SvLEN(sv) = len; /* No longer know the real size. */ | |
3459 | } | |
9f4817db JH |
3460 | /* Mark as UTF-8 even if no hibit - saves scanning loop */ |
3461 | SvUTF8_on(sv); | |
560a288e | 3462 | } |
4411f3b6 | 3463 | return SvCUR(sv); |
560a288e GS |
3464 | } |
3465 | ||
c461cf8f JH |
3466 | /* |
3467 | =for apidoc sv_utf8_downgrade | |
3468 | ||
3469 | Attempt to convert the PV of an SV from UTF8-encoded to byte encoding. | |
3470 | This may not be possible if the PV contains non-byte encoding characters; | |
3471 | if this is the case, either returns false or, if C<fail_ok> is not | |
3472 | true, croaks. | |
3473 | ||
13a6c0e0 JH |
3474 | This is not as a general purpose Unicode to byte encoding interface: |
3475 | use the Encode extension for that. | |
3476 | ||
c461cf8f JH |
3477 | =cut |
3478 | */ | |
3479 | ||
560a288e GS |
3480 | bool |
3481 | Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok) | |
3482 | { | |
3483 | if (SvPOK(sv) && SvUTF8(sv)) { | |
fa301091 | 3484 | if (SvCUR(sv)) { |
03cfe0ae | 3485 | U8 *s; |
652088fc | 3486 | STRLEN len; |
fa301091 | 3487 | |
765f542d NC |
3488 | if (SvIsCOW(sv)) { |
3489 | sv_force_normal_flags(sv, 0); | |
3490 | } | |
03cfe0ae NIS |
3491 | s = (U8 *) SvPV(sv, len); |
3492 | if (!utf8_to_bytes(s, &len)) { | |
fa301091 JH |
3493 | if (fail_ok) |
3494 | return FALSE; | |
3495 | else { | |
3496 | if (PL_op) | |
3497 | Perl_croak(aTHX_ "Wide character in %s", | |
53e06cf0 | 3498 | OP_DESC(PL_op)); |
fa301091 JH |
3499 | else |
3500 | Perl_croak(aTHX_ "Wide character"); | |
3501 | } | |
4b3603a4 | 3502 | } |
fa301091 | 3503 | SvCUR(sv) = len; |
67e989fb | 3504 | } |
560a288e | 3505 | } |
ffebcc3e | 3506 | SvUTF8_off(sv); |
560a288e GS |
3507 | return TRUE; |
3508 | } | |
3509 | ||
c461cf8f JH |
3510 | /* |
3511 | =for apidoc sv_utf8_encode | |
3512 | ||
3513 | Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8> | |
4411f3b6 NIS |
3514 | flag so that it looks like octets again. Used as a building block |
3515 | for encode_utf8 in Encode.xs | |
c461cf8f JH |
3516 | |
3517 | =cut | |
3518 | */ | |
3519 | ||
560a288e GS |
3520 | void |
3521 | Perl_sv_utf8_encode(pTHX_ register SV *sv) | |
3522 | { | |
4411f3b6 | 3523 | (void) sv_utf8_upgrade(sv); |
560a288e GS |
3524 | SvUTF8_off(sv); |
3525 | } | |
3526 | ||
4411f3b6 NIS |
3527 | /* |
3528 | =for apidoc sv_utf8_decode | |
3529 | ||
3530 | Convert the octets in the PV from UTF-8 to chars. Scan for validity and then | |
645c22ef | 3531 | turn off SvUTF8 if needed so that we see characters. Used as a building block |
4411f3b6 NIS |
3532 | for decode_utf8 in Encode.xs |
3533 | ||
3534 | =cut | |
3535 | */ | |
3536 | ||
560a288e GS |
3537 | bool |
3538 | Perl_sv_utf8_decode(pTHX_ register SV *sv) | |
3539 | { | |
3540 | if (SvPOK(sv)) { | |
63cd0674 NIS |
3541 | U8 *c; |
3542 | U8 *e; | |
9cbac4c7 | 3543 | |
645c22ef DM |
3544 | /* The octets may have got themselves encoded - get them back as |
3545 | * bytes | |
3546 | */ | |
3547 | if (!sv_utf8_downgrade(sv, TRUE)) | |
560a288e GS |
3548 | return FALSE; |
3549 | ||
3550 | /* it is actually just a matter of turning the utf8 flag on, but | |
3551 | * we want to make sure everything inside is valid utf8 first. | |
3552 | */ | |
63cd0674 NIS |
3553 | c = (U8 *) SvPVX(sv); |
3554 | if (!is_utf8_string(c, SvCUR(sv)+1)) | |
67e989fb | 3555 | return FALSE; |
63cd0674 | 3556 | e = (U8 *) SvEND(sv); |
511c2ff0 | 3557 | while (c < e) { |
c4d5f83a NIS |
3558 | U8 ch = *c++; |
3559 | if (!UTF8_IS_INVARIANT(ch)) { | |
67e989fb JH |
3560 | SvUTF8_on(sv); |
3561 | break; | |
3562 | } | |
560a288e | 3563 | } |
560a288e GS |
3564 | } |
3565 | return TRUE; | |
3566 | } | |
3567 | ||
09540bc3 JH |
3568 | /* sv_setsv() is now a macro using Perl_sv_setsv_flags(); |
3569 | * this function provided for binary compatibility only | |
3570 | */ | |
3571 | ||
3572 | void | |
3573 | Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr) | |
3574 | { | |
3575 | sv_setsv_flags(dstr, sstr, SV_GMAGIC); | |
3576 | } | |
3577 | ||
954c1994 GS |
3578 | /* |
3579 | =for apidoc sv_setsv | |
3580 | ||
645c22ef DM |
3581 | Copies the contents of the source SV C<ssv> into the destination SV |
3582 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
3583 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
3584 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
3585 | content of the destination. | |
3586 | ||
3587 | You probably want to use one of the assortment of wrappers, such as | |
3588 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
3589 | C<SvSetMagicSV_nosteal>. | |
3590 | ||
8d6d96c1 HS |
3591 | =for apidoc sv_setsv_flags |
3592 | ||
645c22ef DM |
3593 | Copies the contents of the source SV C<ssv> into the destination SV |
3594 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
3595 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
3596 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
3597 | content of the destination. | |
3598 | If the C<flags> parameter has the C<SV_GMAGIC> bit set, will C<mg_get> on | |
3599 | C<ssv> if appropriate, else not. C<sv_setsv> and C<sv_setsv_nomg> are | |
3600 | implemented in terms of this function. | |
3601 | ||
3602 | You probably want to use one of the assortment of wrappers, such as | |
3603 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
3604 | C<SvSetMagicSV_nosteal>. | |
3605 | ||
3606 | This is the primary function for copying scalars, and most other | |
3607 | copy-ish functions and macros use this underneath. | |
8d6d96c1 HS |
3608 | |
3609 | =cut | |
3610 | */ | |
3611 | ||
3612 | void | |
3613 | Perl_sv_setsv_flags(pTHX_ SV *dstr, register SV *sstr, I32 flags) | |
3614 | { | |
8990e307 LW |
3615 | register U32 sflags; |
3616 | register int dtype; | |
3617 | register int stype; | |
463ee0b2 | 3618 | |
79072805 LW |
3619 | if (sstr == dstr) |
3620 | return; | |
765f542d | 3621 | SV_CHECK_THINKFIRST_COW_DROP(dstr); |
79072805 | 3622 | if (!sstr) |
3280af22 | 3623 | sstr = &PL_sv_undef; |
8990e307 LW |
3624 | stype = SvTYPE(sstr); |
3625 | dtype = SvTYPE(dstr); | |
79072805 | 3626 | |
a0d0e21e | 3627 | SvAMAGIC_off(dstr); |
ece467f9 JP |
3628 | if ( SvVOK(dstr) ) |
3629 | { | |
3630 | /* need to nuke the magic */ | |
3631 | mg_free(dstr); | |
3632 | SvRMAGICAL_off(dstr); | |
3633 | } | |
9e7bc3e8 | 3634 | |
463ee0b2 | 3635 | /* There's a lot of redundancy below but we're going for speed here */ |
79072805 | 3636 | |
8990e307 | 3637 | switch (stype) { |
79072805 | 3638 | case SVt_NULL: |
aece5585 | 3639 | undef_sstr: |
20408e3c GS |
3640 | if (dtype != SVt_PVGV) { |
3641 | (void)SvOK_off(dstr); | |
3642 | return; | |
3643 | } | |
3644 | break; | |
463ee0b2 | 3645 | case SVt_IV: |
aece5585 GA |
3646 | if (SvIOK(sstr)) { |
3647 | switch (dtype) { | |
3648 | case SVt_NULL: | |
8990e307 | 3649 | sv_upgrade(dstr, SVt_IV); |
aece5585 GA |
3650 | break; |
3651 | case SVt_NV: | |
8990e307 | 3652 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 GA |
3653 | break; |
3654 | case SVt_RV: | |
3655 | case SVt_PV: | |
a0d0e21e | 3656 | sv_upgrade(dstr, SVt_PVIV); |
aece5585 GA |
3657 | break; |
3658 | } | |
3659 | (void)SvIOK_only(dstr); | |
3660 | SvIVX(dstr) = SvIVX(sstr); | |
25da4f38 IZ |
3661 | if (SvIsUV(sstr)) |
3662 | SvIsUV_on(dstr); | |
27c9684d AP |
3663 | if (SvTAINTED(sstr)) |
3664 | SvTAINT(dstr); | |
aece5585 | 3665 | return; |
8990e307 | 3666 | } |
aece5585 GA |
3667 | goto undef_sstr; |
3668 | ||
463ee0b2 | 3669 | case SVt_NV: |
aece5585 GA |
3670 | if (SvNOK(sstr)) { |
3671 | switch (dtype) { | |
3672 | case SVt_NULL: | |
3673 | case SVt_IV: | |
8990e307 | 3674 | sv_upgrade(dstr, SVt_NV); |
aece5585 GA |
3675 | break; |
3676 | case SVt_RV: | |
3677 | case SVt_PV: | |
3678 | case SVt_PVIV: | |
a0d0e21e | 3679 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 GA |
3680 | break; |
3681 | } | |
3682 | SvNVX(dstr) = SvNVX(sstr); | |
3683 | (void)SvNOK_only(dstr); | |
27c9684d AP |
3684 | if (SvTAINTED(sstr)) |
3685 | SvTAINT(dstr); | |
aece5585 | 3686 | return; |
8990e307 | 3687 | } |
aece5585 GA |
3688 | goto undef_sstr; |
3689 | ||
ed6116ce | 3690 | case SVt_RV: |
8990e307 | 3691 | if (dtype < SVt_RV) |
ed6116ce | 3692 | sv_upgrade(dstr, SVt_RV); |
c07a80fd | 3693 | else if (dtype == SVt_PVGV && |
23bb1b96 | 3694 | SvROK(sstr) && SvTYPE(SvRV(sstr)) == SVt_PVGV) { |
c07a80fd | 3695 | sstr = SvRV(sstr); |
a5f75d66 | 3696 | if (sstr == dstr) { |
1d7c1841 GS |
3697 | if (GvIMPORTED(dstr) != GVf_IMPORTED |
3698 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
3699 | { | |
a5f75d66 | 3700 | GvIMPORTED_on(dstr); |
1d7c1841 | 3701 | } |
a5f75d66 AD |
3702 | GvMULTI_on(dstr); |
3703 | return; | |
3704 | } | |
c07a80fd | 3705 | goto glob_assign; |
3706 | } | |
ed6116ce | 3707 | break; |
fc36a67e | 3708 | case SVt_PVFM: |
d89fc664 NC |
3709 | #ifdef PERL_COPY_ON_WRITE |
3710 | if ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS) { | |
3711 | if (dtype < SVt_PVIV) | |
3712 | sv_upgrade(dstr, SVt_PVIV); | |
3713 | break; | |
3714 | } | |
3715 | /* Fall through */ | |
3716 | #endif | |
3717 | case SVt_PV: | |
8990e307 | 3718 | if (dtype < SVt_PV) |
463ee0b2 | 3719 | sv_upgrade(dstr, SVt_PV); |
463ee0b2 LW |
3720 | break; |
3721 | case SVt_PVIV: | |
8990e307 | 3722 | if (dtype < SVt_PVIV) |
463ee0b2 | 3723 | sv_upgrade(dstr, SVt_PVIV); |
463ee0b2 LW |
3724 | break; |
3725 | case SVt_PVNV: | |
8990e307 | 3726 | if (dtype < SVt_PVNV) |
463ee0b2 | 3727 | sv_upgrade(dstr, SVt_PVNV); |
463ee0b2 | 3728 | break; |
4633a7c4 LW |
3729 | case SVt_PVAV: |
3730 | case SVt_PVHV: | |
3731 | case SVt_PVCV: | |
4633a7c4 | 3732 | case SVt_PVIO: |
533c011a | 3733 | if (PL_op) |
cea2e8a9 | 3734 | Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0), |
53e06cf0 | 3735 | OP_NAME(PL_op)); |
4633a7c4 | 3736 | else |
cea2e8a9 | 3737 | Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0)); |
4633a7c4 LW |
3738 | break; |
3739 | ||
79072805 | 3740 | case SVt_PVGV: |
8990e307 | 3741 | if (dtype <= SVt_PVGV) { |
c07a80fd | 3742 | glob_assign: |
a5f75d66 | 3743 | if (dtype != SVt_PVGV) { |
a0d0e21e LW |
3744 | char *name = GvNAME(sstr); |
3745 | STRLEN len = GvNAMELEN(sstr); | |
463ee0b2 | 3746 | sv_upgrade(dstr, SVt_PVGV); |
14befaf4 | 3747 | sv_magic(dstr, dstr, PERL_MAGIC_glob, Nullch, 0); |
85aff577 | 3748 | GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr)); |
a0d0e21e LW |
3749 | GvNAME(dstr) = savepvn(name, len); |
3750 | GvNAMELEN(dstr) = len; | |
3751 | SvFAKE_on(dstr); /* can coerce to non-glob */ | |
3752 | } | |
7bac28a0 | 3753 | /* ahem, death to those who redefine active sort subs */ |
3280af22 NIS |
3754 | else if (PL_curstackinfo->si_type == PERLSI_SORT |
3755 | && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr))) | |
cea2e8a9 | 3756 | Perl_croak(aTHX_ "Can't redefine active sort subroutine %s", |
7bac28a0 | 3757 | GvNAME(dstr)); |
5bd07a3d | 3758 | |
7fb37951 AMS |
3759 | #ifdef GV_UNIQUE_CHECK |
3760 | if (GvUNIQUE((GV*)dstr)) { | |
5bd07a3d DM |
3761 | Perl_croak(aTHX_ PL_no_modify); |
3762 | } | |
3763 | #endif | |
3764 | ||
a0d0e21e | 3765 | (void)SvOK_off(dstr); |
a5f75d66 | 3766 | GvINTRO_off(dstr); /* one-shot flag */ |
1edc1566 | 3767 | gp_free((GV*)dstr); |
79072805 | 3768 | GvGP(dstr) = gp_ref(GvGP(sstr)); |
27c9684d AP |
3769 | if (SvTAINTED(sstr)) |
3770 | SvTAINT(dstr); | |
1d7c1841 GS |
3771 | if (GvIMPORTED(dstr) != GVf_IMPORTED |
3772 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
3773 | { | |
a5f75d66 | 3774 | GvIMPORTED_on(dstr); |
1d7c1841 | 3775 | } |
a5f75d66 | 3776 | GvMULTI_on(dstr); |
79072805 LW |
3777 | return; |
3778 | } | |
3779 | /* FALL THROUGH */ | |
3780 | ||
3781 | default: | |
8d6d96c1 | 3782 | if (SvGMAGICAL(sstr) && (flags & SV_GMAGIC)) { |
973f89ab | 3783 | mg_get(sstr); |
eb160463 | 3784 | if ((int)SvTYPE(sstr) != stype) { |
973f89ab CS |
3785 | stype = SvTYPE(sstr); |
3786 | if (stype == SVt_PVGV && dtype <= SVt_PVGV) | |
3787 | goto glob_assign; | |
3788 | } | |
3789 | } | |
ded42b9f | 3790 | if (stype == SVt_PVLV) |
6fc92669 | 3791 | (void)SvUPGRADE(dstr, SVt_PVNV); |
ded42b9f | 3792 | else |
eb160463 | 3793 | (void)SvUPGRADE(dstr, (U32)stype); |
79072805 LW |
3794 | } |
3795 | ||
8990e307 LW |
3796 | sflags = SvFLAGS(sstr); |
3797 | ||
3798 | if (sflags & SVf_ROK) { | |
3799 | if (dtype >= SVt_PV) { | |
3800 | if (dtype == SVt_PVGV) { | |
3801 | SV *sref = SvREFCNT_inc(SvRV(sstr)); | |
3802 | SV *dref = 0; | |
a5f75d66 | 3803 | int intro = GvINTRO(dstr); |
a0d0e21e | 3804 | |
7fb37951 AMS |
3805 | #ifdef GV_UNIQUE_CHECK |
3806 | if (GvUNIQUE((GV*)dstr)) { | |
5bd07a3d DM |
3807 | Perl_croak(aTHX_ PL_no_modify); |
3808 | } | |
3809 | #endif | |
3810 | ||
a0d0e21e | 3811 | if (intro) { |
a5f75d66 | 3812 | GvINTRO_off(dstr); /* one-shot flag */ |
1d7c1841 | 3813 | GvLINE(dstr) = CopLINE(PL_curcop); |
1edc1566 | 3814 | GvEGV(dstr) = (GV*)dstr; |
a0d0e21e | 3815 | } |
a5f75d66 | 3816 | GvMULTI_on(dstr); |
8990e307 LW |
3817 | switch (SvTYPE(sref)) { |
3818 | case SVt_PVAV: | |
a0d0e21e | 3819 | if (intro) |
890ed176 | 3820 | SAVEGENERICSV(GvAV(dstr)); |
a0d0e21e LW |
3821 | else |
3822 | dref = (SV*)GvAV(dstr); | |
8990e307 | 3823 | GvAV(dstr) = (AV*)sref; |
39bac7f7 | 3824 | if (!GvIMPORTED_AV(dstr) |
1d7c1841 GS |
3825 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
3826 | { | |
a5f75d66 | 3827 | GvIMPORTED_AV_on(dstr); |
1d7c1841 | 3828 | } |
8990e307 LW |
3829 | break; |
3830 | case SVt_PVHV: | |
a0d0e21e | 3831 | if (intro) |
890ed176 | 3832 | SAVEGENERICSV(GvHV(dstr)); |
a0d0e21e LW |
3833 | else |
3834 | dref = (SV*)GvHV(dstr); | |
8990e307 | 3835 | GvHV(dstr) = (HV*)sref; |
39bac7f7 | 3836 | if (!GvIMPORTED_HV(dstr) |
1d7c1841 GS |
3837 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
3838 | { | |
a5f75d66 | 3839 | GvIMPORTED_HV_on(dstr); |
1d7c1841 | 3840 | } |
8990e307 LW |
3841 | break; |
3842 | case SVt_PVCV: | |
8ebc5c01 | 3843 | if (intro) { |
3844 | if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) { | |
3845 | SvREFCNT_dec(GvCV(dstr)); | |
3846 | GvCV(dstr) = Nullcv; | |
68dc0745 | 3847 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
3280af22 | 3848 | PL_sub_generation++; |
8ebc5c01 | 3849 | } |
890ed176 | 3850 | SAVEGENERICSV(GvCV(dstr)); |
8ebc5c01 | 3851 | } |
68dc0745 | 3852 | else |
3853 | dref = (SV*)GvCV(dstr); | |
3854 | if (GvCV(dstr) != (CV*)sref) { | |
748a9306 | 3855 | CV* cv = GvCV(dstr); |
4633a7c4 | 3856 | if (cv) { |
68dc0745 | 3857 | if (!GvCVGEN((GV*)dstr) && |
3858 | (CvROOT(cv) || CvXSUB(cv))) | |
3859 | { | |
7bac28a0 | 3860 | /* ahem, death to those who redefine |
3861 | * active sort subs */ | |
3280af22 NIS |
3862 | if (PL_curstackinfo->si_type == PERLSI_SORT && |
3863 | PL_sortcop == CvSTART(cv)) | |
1c846c1f | 3864 | Perl_croak(aTHX_ |
7bac28a0 | 3865 | "Can't redefine active sort subroutine %s", |
3866 | GvENAME((GV*)dstr)); | |
beab0874 JT |
3867 | /* Redefining a sub - warning is mandatory if |
3868 | it was a const and its value changed. */ | |
3869 | if (ckWARN(WARN_REDEFINE) | |
3870 | || (CvCONST(cv) | |
3871 | && (!CvCONST((CV*)sref) | |
3872 | || sv_cmp(cv_const_sv(cv), | |
3873 | cv_const_sv((CV*)sref))))) | |
3874 | { | |
9014280d | 3875 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
beab0874 | 3876 | CvCONST(cv) |
910764e6 RGS |
3877 | ? "Constant subroutine %s::%s redefined" |
3878 | : "Subroutine %s::%s redefined", | |
3879 | HvNAME(GvSTASH((GV*)dstr)), | |
beab0874 JT |
3880 | GvENAME((GV*)dstr)); |
3881 | } | |
9607fc9c | 3882 | } |
fb24441d RGS |
3883 | if (!intro) |
3884 | cv_ckproto(cv, (GV*)dstr, | |
3885 | SvPOK(sref) ? SvPVX(sref) : Nullch); | |
4633a7c4 | 3886 | } |
a5f75d66 | 3887 | GvCV(dstr) = (CV*)sref; |
7a4c00b4 | 3888 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
a5f75d66 | 3889 | GvASSUMECV_on(dstr); |
3280af22 | 3890 | PL_sub_generation++; |
a5f75d66 | 3891 | } |
39bac7f7 | 3892 | if (!GvIMPORTED_CV(dstr) |
1d7c1841 GS |
3893 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
3894 | { | |
a5f75d66 | 3895 | GvIMPORTED_CV_on(dstr); |
1d7c1841 | 3896 | } |
8990e307 | 3897 | break; |
91bba347 LW |
3898 | case SVt_PVIO: |
3899 | if (intro) | |
890ed176 | 3900 | SAVEGENERICSV(GvIOp(dstr)); |
91bba347 LW |
3901 | else |
3902 | dref = (SV*)GvIOp(dstr); | |
3903 | GvIOp(dstr) = (IO*)sref; | |
3904 | break; | |
f4d13ee9 JH |
3905 | case SVt_PVFM: |
3906 | if (intro) | |
890ed176 | 3907 | SAVEGENERICSV(GvFORM(dstr)); |
f4d13ee9 JH |
3908 | else |
3909 | dref = (SV*)GvFORM(dstr); | |
3910 | GvFORM(dstr) = (CV*)sref; | |
3911 | break; | |
8990e307 | 3912 | default: |
a0d0e21e | 3913 | if (intro) |
890ed176 | 3914 | SAVEGENERICSV(GvSV(dstr)); |
a0d0e21e LW |
3915 | else |
3916 | dref = (SV*)GvSV(dstr); | |
8990e307 | 3917 | GvSV(dstr) = sref; |
39bac7f7 | 3918 | if (!GvIMPORTED_SV(dstr) |
1d7c1841 GS |
3919 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
3920 | { | |
a5f75d66 | 3921 | GvIMPORTED_SV_on(dstr); |
1d7c1841 | 3922 | } |
8990e307 LW |
3923 | break; |
3924 | } | |
3925 | if (dref) | |
3926 | SvREFCNT_dec(dref); | |
27c9684d AP |
3927 | if (SvTAINTED(sstr)) |
3928 | SvTAINT(dstr); | |
8990e307 LW |
3929 | return; |
3930 | } | |
a0d0e21e | 3931 | if (SvPVX(dstr)) { |
760ac839 | 3932 | (void)SvOOK_off(dstr); /* backoff */ |
50483b2c JD |
3933 | if (SvLEN(dstr)) |
3934 | Safefree(SvPVX(dstr)); | |
a0d0e21e LW |
3935 | SvLEN(dstr)=SvCUR(dstr)=0; |
3936 | } | |
8990e307 | 3937 | } |
a0d0e21e | 3938 | (void)SvOK_off(dstr); |
8990e307 | 3939 | SvRV(dstr) = SvREFCNT_inc(SvRV(sstr)); |
ed6116ce | 3940 | SvROK_on(dstr); |
8990e307 | 3941 | if (sflags & SVp_NOK) { |
3332b3c1 JH |
3942 | SvNOKp_on(dstr); |
3943 | /* Only set the public OK flag if the source has public OK. */ | |
3944 | if (sflags & SVf_NOK) | |
3945 | SvFLAGS(dstr) |= SVf_NOK; | |
ed6116ce LW |
3946 | SvNVX(dstr) = SvNVX(sstr); |
3947 | } | |
8990e307 | 3948 | if (sflags & SVp_IOK) { |
3332b3c1 JH |
3949 | (void)SvIOKp_on(dstr); |
3950 | if (sflags & SVf_IOK) | |
3951 | SvFLAGS(dstr) |= SVf_IOK; | |
2b1c7e3e | 3952 | if (sflags & SVf_IVisUV) |
25da4f38 | 3953 | SvIsUV_on(dstr); |
3332b3c1 | 3954 | SvIVX(dstr) = SvIVX(sstr); |
ed6116ce | 3955 | } |
a0d0e21e LW |
3956 | if (SvAMAGIC(sstr)) { |
3957 | SvAMAGIC_on(dstr); | |
3958 | } | |
ed6116ce | 3959 | } |
8990e307 | 3960 | else if (sflags & SVp_POK) { |
765f542d | 3961 | bool isSwipe = 0; |
79072805 LW |
3962 | |
3963 | /* | |
3964 | * Check to see if we can just swipe the string. If so, it's a | |
3965 | * possible small lose on short strings, but a big win on long ones. | |
463ee0b2 LW |
3966 | * It might even be a win on short strings if SvPVX(dstr) |
3967 | * has to be allocated and SvPVX(sstr) has to be freed. | |
79072805 LW |
3968 | */ |
3969 | ||
765f542d NC |
3970 | if ( |
3971 | #ifdef PERL_COPY_ON_WRITE | |
3972 | (sflags & (SVf_FAKE | SVf_READONLY)) != (SVf_FAKE | SVf_READONLY) | |
3973 | && | |
3974 | #endif | |
3975 | !(isSwipe = | |
3976 | (sflags & SVs_TEMP) && /* slated for free anyway? */ | |
3977 | !(sflags & SVf_OOK) && /* and not involved in OOK hack? */ | |
3978 | SvREFCNT(sstr) == 1 && /* and no other references to it? */ | |
3979 | SvLEN(sstr) && /* and really is a string */ | |
645c22ef | 3980 | /* and won't be needed again, potentially */ |
765f542d NC |
3981 | !(PL_op && PL_op->op_type == OP_AASSIGN)) |
3982 | #ifdef PERL_COPY_ON_WRITE | |
3983 | && !((sflags & CAN_COW_MASK) == CAN_COW_FLAGS | |
3984 | && SvTYPE(sstr) >= SVt_PVIV) | |
3985 | #endif | |
3986 | ) { | |
3987 | /* Failed the swipe test, and it's not a shared hash key either. | |
3988 | Have to copy the string. */ | |
3989 | STRLEN len = SvCUR(sstr); | |
3990 | SvGROW(dstr, len + 1); /* inlined from sv_setpvn */ | |
3991 | Move(SvPVX(sstr),SvPVX(dstr),len,char); | |
3992 | SvCUR_set(dstr, len); | |
3993 | *SvEND(dstr) = '\0'; | |
3994 | (void)SvPOK_only(dstr); | |
3995 | } else { | |
3996 | /* If PERL_COPY_ON_WRITE is not defined, then isSwipe will always | |
3997 | be true in here. */ | |
3998 | #ifdef PERL_COPY_ON_WRITE | |
3999 | /* Either it's a shared hash key, or it's suitable for | |
4000 | copy-on-write or we can swipe the string. */ | |
46187eeb | 4001 | if (DEBUG_C_TEST) { |
ed252734 | 4002 | PerlIO_printf(Perl_debug_log, "Copy on write: sstr --> dstr\n"); |
e419cbc5 NC |
4003 | sv_dump(sstr); |
4004 | sv_dump(dstr); | |
46187eeb | 4005 | } |
765f542d NC |
4006 | if (!isSwipe) { |
4007 | /* I believe I should acquire a global SV mutex if | |
4008 | it's a COW sv (not a shared hash key) to stop | |
4009 | it going un copy-on-write. | |
4010 | If the source SV has gone un copy on write between up there | |
4011 | and down here, then (assert() that) it is of the correct | |
4012 | form to make it copy on write again */ | |
4013 | if ((sflags & (SVf_FAKE | SVf_READONLY)) | |
4014 | != (SVf_FAKE | SVf_READONLY)) { | |
4015 | SvREADONLY_on(sstr); | |
4016 | SvFAKE_on(sstr); | |
4017 | /* Make the source SV into a loop of 1. | |
4018 | (about to become 2) */ | |
a29f6d03 | 4019 | SV_COW_NEXT_SV_SET(sstr, sstr); |
765f542d NC |
4020 | } |
4021 | } | |
4022 | #endif | |
4023 | /* Initial code is common. */ | |
adbc6bb1 | 4024 | if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */ |
a5f75d66 AD |
4025 | if (SvOOK(dstr)) { |
4026 | SvFLAGS(dstr) &= ~SVf_OOK; | |
4027 | Safefree(SvPVX(dstr) - SvIVX(dstr)); | |
4028 | } | |
50483b2c | 4029 | else if (SvLEN(dstr)) |
a5f75d66 | 4030 | Safefree(SvPVX(dstr)); |
79072805 | 4031 | } |
a5f75d66 | 4032 | (void)SvPOK_only(dstr); |
765f542d NC |
4033 | |
4034 | #ifdef PERL_COPY_ON_WRITE | |
4035 | if (!isSwipe) { | |
4036 | /* making another shared SV. */ | |
4037 | STRLEN cur = SvCUR(sstr); | |
4038 | STRLEN len = SvLEN(sstr); | |
d89fc664 | 4039 | assert (SvTYPE(dstr) >= SVt_PVIV); |
765f542d NC |
4040 | if (len) { |
4041 | /* SvIsCOW_normal */ | |
4042 | /* splice us in between source and next-after-source. */ | |
a29f6d03 NC |
4043 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); |
4044 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
765f542d NC |
4045 | SvPV_set(dstr, SvPVX(sstr)); |
4046 | } else { | |
4047 | /* SvIsCOW_shared_hash */ | |
4048 | UV hash = SvUVX(sstr); | |
46187eeb NC |
4049 | DEBUG_C(PerlIO_printf(Perl_debug_log, |
4050 | "Copy on write: Sharing hash\n")); | |
765f542d NC |
4051 | SvPV_set(dstr, |
4052 | sharepvn(SvPVX(sstr), | |
4053 | (sflags & SVf_UTF8?-cur:cur), hash)); | |
4054 | SvUVX(dstr) = hash; | |
4055 | } | |
4056 | SvLEN(dstr) = len; | |
4057 | SvCUR(dstr) = cur; | |
4058 | SvREADONLY_on(dstr); | |
4059 | SvFAKE_on(dstr); | |
4060 | /* Relesase a global SV mutex. */ | |
4061 | } | |
4062 | else | |
4063 | #endif | |
4064 | { /* Passes the swipe test. */ | |
4065 | SvPV_set(dstr, SvPVX(sstr)); | |
4066 | SvLEN_set(dstr, SvLEN(sstr)); | |
4067 | SvCUR_set(dstr, SvCUR(sstr)); | |
4068 | ||
4069 | SvTEMP_off(dstr); | |
4070 | (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */ | |
4071 | SvPV_set(sstr, Nullch); | |
4072 | SvLEN_set(sstr, 0); | |
4073 | SvCUR_set(sstr, 0); | |
4074 | SvTEMP_off(sstr); | |
4075 | } | |
4076 | } | |
9aa983d2 | 4077 | if (sflags & SVf_UTF8) |
a7cb1f99 | 4078 | SvUTF8_on(dstr); |
79072805 | 4079 | /*SUPPRESS 560*/ |
8990e307 | 4080 | if (sflags & SVp_NOK) { |
3332b3c1 JH |
4081 | SvNOKp_on(dstr); |
4082 | if (sflags & SVf_NOK) | |
4083 | SvFLAGS(dstr) |= SVf_NOK; | |
463ee0b2 | 4084 | SvNVX(dstr) = SvNVX(sstr); |
79072805 | 4085 | } |
8990e307 | 4086 | if (sflags & SVp_IOK) { |
3332b3c1 JH |
4087 | (void)SvIOKp_on(dstr); |
4088 | if (sflags & SVf_IOK) | |
4089 | SvFLAGS(dstr) |= SVf_IOK; | |
2b1c7e3e | 4090 | if (sflags & SVf_IVisUV) |
25da4f38 | 4091 | SvIsUV_on(dstr); |
463ee0b2 | 4092 | SvIVX(dstr) = SvIVX(sstr); |
79072805 | 4093 | } |
92f0c265 | 4094 | if (SvVOK(sstr)) { |
ece467f9 JP |
4095 | MAGIC *smg = mg_find(sstr,PERL_MAGIC_vstring); |
4096 | sv_magic(dstr, NULL, PERL_MAGIC_vstring, | |
4097 | smg->mg_ptr, smg->mg_len); | |
439cb1c4 | 4098 | SvRMAGICAL_on(dstr); |
92f0c265 | 4099 | } |
79072805 | 4100 | } |
8990e307 | 4101 | else if (sflags & SVp_IOK) { |
3332b3c1 JH |
4102 | if (sflags & SVf_IOK) |
4103 | (void)SvIOK_only(dstr); | |
4104 | else { | |
9cbac4c7 DM |
4105 | (void)SvOK_off(dstr); |
4106 | (void)SvIOKp_on(dstr); | |
3332b3c1 JH |
4107 | } |
4108 | /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */ | |
2b1c7e3e | 4109 | if (sflags & SVf_IVisUV) |
25da4f38 | 4110 | SvIsUV_on(dstr); |
3332b3c1 JH |
4111 | SvIVX(dstr) = SvIVX(sstr); |
4112 | if (sflags & SVp_NOK) { | |
4113 | if (sflags & SVf_NOK) | |
4114 | (void)SvNOK_on(dstr); | |
4115 | else | |
4116 | (void)SvNOKp_on(dstr); | |
4117 | SvNVX(dstr) = SvNVX(sstr); | |
4118 | } | |
4119 | } | |
4120 | else if (sflags & SVp_NOK) { | |
4121 | if (sflags & SVf_NOK) | |
4122 | (void)SvNOK_only(dstr); | |
4123 | else { | |
9cbac4c7 | 4124 | (void)SvOK_off(dstr); |
3332b3c1 JH |
4125 | SvNOKp_on(dstr); |
4126 | } | |
4127 | SvNVX(dstr) = SvNVX(sstr); | |
79072805 LW |
4128 | } |
4129 | else { | |
20408e3c | 4130 | if (dtype == SVt_PVGV) { |
e476b1b5 | 4131 | if (ckWARN(WARN_MISC)) |
9014280d | 4132 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Undefined value assigned to typeglob"); |
20408e3c GS |
4133 | } |
4134 | else | |
4135 | (void)SvOK_off(dstr); | |
a0d0e21e | 4136 | } |
27c9684d AP |
4137 | if (SvTAINTED(sstr)) |
4138 | SvTAINT(dstr); | |
79072805 LW |
4139 | } |
4140 | ||
954c1994 GS |
4141 | /* |
4142 | =for apidoc sv_setsv_mg | |
4143 | ||
4144 | Like C<sv_setsv>, but also handles 'set' magic. | |
4145 | ||
4146 | =cut | |
4147 | */ | |
4148 | ||
79072805 | 4149 | void |
864dbfa3 | 4150 | Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr) |
ef50df4b GS |
4151 | { |
4152 | sv_setsv(dstr,sstr); | |
4153 | SvSETMAGIC(dstr); | |
4154 | } | |
4155 | ||
ed252734 NC |
4156 | #ifdef PERL_COPY_ON_WRITE |
4157 | SV * | |
4158 | Perl_sv_setsv_cow(pTHX_ SV *dstr, SV *sstr) | |
4159 | { | |
4160 | STRLEN cur = SvCUR(sstr); | |
4161 | STRLEN len = SvLEN(sstr); | |
4162 | register char *new_pv; | |
4163 | ||
4164 | if (DEBUG_C_TEST) { | |
4165 | PerlIO_printf(Perl_debug_log, "Fast copy on write: %p -> %p\n", | |
4166 | sstr, dstr); | |
4167 | sv_dump(sstr); | |
4168 | if (dstr) | |
4169 | sv_dump(dstr); | |
4170 | } | |
4171 | ||
4172 | if (dstr) { | |
4173 | if (SvTHINKFIRST(dstr)) | |
4174 | sv_force_normal_flags(dstr, SV_COW_DROP_PV); | |
4175 | else if (SvPVX(dstr)) | |
4176 | Safefree(SvPVX(dstr)); | |
4177 | } | |
4178 | else | |
4179 | new_SV(dstr); | |
4180 | SvUPGRADE (dstr, SVt_PVIV); | |
4181 | ||
4182 | assert (SvPOK(sstr)); | |
4183 | assert (SvPOKp(sstr)); | |
4184 | assert (!SvIOK(sstr)); | |
4185 | assert (!SvIOKp(sstr)); | |
4186 | assert (!SvNOK(sstr)); | |
4187 | assert (!SvNOKp(sstr)); | |
4188 | ||
4189 | if (SvIsCOW(sstr)) { | |
4190 | ||
4191 | if (SvLEN(sstr) == 0) { | |
4192 | /* source is a COW shared hash key. */ | |
4193 | UV hash = SvUVX(sstr); | |
4194 | DEBUG_C(PerlIO_printf(Perl_debug_log, | |
4195 | "Fast copy on write: Sharing hash\n")); | |
4196 | SvUVX(dstr) = hash; | |
4197 | new_pv = sharepvn(SvPVX(sstr), (SvUTF8(sstr)?-cur:cur), hash); | |
4198 | goto common_exit; | |
4199 | } | |
4200 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); | |
4201 | } else { | |
4202 | assert ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS); | |
4203 | SvUPGRADE (sstr, SVt_PVIV); | |
4204 | SvREADONLY_on(sstr); | |
4205 | SvFAKE_on(sstr); | |
4206 | DEBUG_C(PerlIO_printf(Perl_debug_log, | |
4207 | "Fast copy on write: Converting sstr to COW\n")); | |
4208 | SV_COW_NEXT_SV_SET(dstr, sstr); | |
4209 | } | |
4210 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
4211 | new_pv = SvPVX(sstr); | |
4212 | ||
4213 | common_exit: | |
4214 | SvPV_set(dstr, new_pv); | |
4215 | SvFLAGS(dstr) = (SVt_PVIV|SVf_POK|SVp_POK|SVf_FAKE|SVf_READONLY); | |
4216 | if (SvUTF8(sstr)) | |
4217 | SvUTF8_on(dstr); | |
4218 | SvLEN(dstr) = len; | |
4219 | SvCUR(dstr) = cur; | |
4220 | if (DEBUG_C_TEST) { | |
4221 | sv_dump(dstr); | |
4222 | } | |
4223 | return dstr; | |
4224 | } | |
4225 | #endif | |
4226 | ||
954c1994 GS |
4227 | /* |
4228 | =for apidoc sv_setpvn | |
4229 | ||
4230 | Copies a string into an SV. The C<len> parameter indicates the number of | |
4231 | bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>. | |
4232 | ||
4233 | =cut | |
4234 | */ | |
4235 | ||
ef50df4b | 4236 | void |
864dbfa3 | 4237 | Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
79072805 | 4238 | { |
c6f8c383 | 4239 | register char *dptr; |
22c522df | 4240 | |
765f542d | 4241 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 4242 | if (!ptr) { |
a0d0e21e | 4243 | (void)SvOK_off(sv); |
463ee0b2 LW |
4244 | return; |
4245 | } | |
22c522df JH |
4246 | else { |
4247 | /* len is STRLEN which is unsigned, need to copy to signed */ | |
4248 | IV iv = len; | |
9c5ffd7c JH |
4249 | if (iv < 0) |
4250 | Perl_croak(aTHX_ "panic: sv_setpvn called with negative strlen"); | |
22c522df | 4251 | } |
6fc92669 | 4252 | (void)SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 4253 | |
79072805 | 4254 | SvGROW(sv, len + 1); |
c6f8c383 GA |
4255 | dptr = SvPVX(sv); |
4256 | Move(ptr,dptr,len,char); | |
4257 | dptr[len] = '\0'; | |
79072805 | 4258 | SvCUR_set(sv, len); |
1aa99e6b | 4259 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4260 | SvTAINT(sv); |
79072805 LW |
4261 | } |
4262 | ||
954c1994 GS |
4263 | /* |
4264 | =for apidoc sv_setpvn_mg | |
4265 | ||
4266 | Like C<sv_setpvn>, but also handles 'set' magic. | |
4267 | ||
4268 | =cut | |
4269 | */ | |
4270 | ||
79072805 | 4271 | void |
864dbfa3 | 4272 | Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
ef50df4b GS |
4273 | { |
4274 | sv_setpvn(sv,ptr,len); | |
4275 | SvSETMAGIC(sv); | |
4276 | } | |
4277 | ||
954c1994 GS |
4278 | /* |
4279 | =for apidoc sv_setpv | |
4280 | ||
4281 | Copies a string into an SV. The string must be null-terminated. Does not | |
4282 | handle 'set' magic. See C<sv_setpv_mg>. | |
4283 | ||
4284 | =cut | |
4285 | */ | |
4286 | ||
ef50df4b | 4287 | void |
864dbfa3 | 4288 | Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
4289 | { |
4290 | register STRLEN len; | |
4291 | ||
765f542d | 4292 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 4293 | if (!ptr) { |
a0d0e21e | 4294 | (void)SvOK_off(sv); |
463ee0b2 LW |
4295 | return; |
4296 | } | |
79072805 | 4297 | len = strlen(ptr); |
6fc92669 | 4298 | (void)SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 4299 | |
79072805 | 4300 | SvGROW(sv, len + 1); |
463ee0b2 | 4301 | Move(ptr,SvPVX(sv),len+1,char); |
79072805 | 4302 | SvCUR_set(sv, len); |
1aa99e6b | 4303 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 LW |
4304 | SvTAINT(sv); |
4305 | } | |
4306 | ||
954c1994 GS |
4307 | /* |
4308 | =for apidoc sv_setpv_mg | |
4309 | ||
4310 | Like C<sv_setpv>, but also handles 'set' magic. | |
4311 | ||
4312 | =cut | |
4313 | */ | |
4314 | ||
463ee0b2 | 4315 | void |
864dbfa3 | 4316 | Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b GS |
4317 | { |
4318 | sv_setpv(sv,ptr); | |
4319 | SvSETMAGIC(sv); | |
4320 | } | |
4321 | ||
954c1994 GS |
4322 | /* |
4323 | =for apidoc sv_usepvn | |
4324 | ||
4325 | Tells an SV to use C<ptr> to find its string value. Normally the string is | |
1c846c1f | 4326 | stored inside the SV but sv_usepvn allows the SV to use an outside string. |
954c1994 GS |
4327 | The C<ptr> should point to memory that was allocated by C<malloc>. The |
4328 | string length, C<len>, must be supplied. This function will realloc the | |
4329 | memory pointed to by C<ptr>, so that pointer should not be freed or used by | |
4330 | the programmer after giving it to sv_usepvn. Does not handle 'set' magic. | |
4331 | See C<sv_usepvn_mg>. | |
4332 | ||
4333 | =cut | |
4334 | */ | |
4335 | ||
ef50df4b | 4336 | void |
864dbfa3 | 4337 | Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len) |
463ee0b2 | 4338 | { |
765f542d | 4339 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
c6f8c383 | 4340 | (void)SvUPGRADE(sv, SVt_PV); |
463ee0b2 | 4341 | if (!ptr) { |
a0d0e21e | 4342 | (void)SvOK_off(sv); |
463ee0b2 LW |
4343 | return; |
4344 | } | |
a0ed51b3 | 4345 | (void)SvOOK_off(sv); |
50483b2c | 4346 | if (SvPVX(sv) && SvLEN(sv)) |
463ee0b2 LW |
4347 | Safefree(SvPVX(sv)); |
4348 | Renew(ptr, len+1, char); | |
4349 | SvPVX(sv) = ptr; | |
4350 | SvCUR_set(sv, len); | |
4351 | SvLEN_set(sv, len+1); | |
4352 | *SvEND(sv) = '\0'; | |
1aa99e6b | 4353 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4354 | SvTAINT(sv); |
79072805 LW |
4355 | } |
4356 | ||
954c1994 GS |
4357 | /* |
4358 | =for apidoc sv_usepvn_mg | |
4359 | ||
4360 | Like C<sv_usepvn>, but also handles 'set' magic. | |
4361 | ||
4362 | =cut | |
4363 | */ | |
4364 | ||
ef50df4b | 4365 | void |
864dbfa3 | 4366 | Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len) |
ef50df4b | 4367 | { |
51c1089b | 4368 | sv_usepvn(sv,ptr,len); |
ef50df4b GS |
4369 | SvSETMAGIC(sv); |
4370 | } | |
4371 | ||
765f542d NC |
4372 | #ifdef PERL_COPY_ON_WRITE |
4373 | /* Need to do this *after* making the SV normal, as we need the buffer | |
4374 | pointer to remain valid until after we've copied it. If we let go too early, | |
4375 | another thread could invalidate it by unsharing last of the same hash key | |
4376 | (which it can do by means other than releasing copy-on-write Svs) | |
4377 | or by changing the other copy-on-write SVs in the loop. */ | |
4378 | STATIC void | |
4379 | S_sv_release_COW(pTHX_ register SV *sv, char *pvx, STRLEN cur, STRLEN len, | |
4380 | U32 hash, SV *after) | |
4381 | { | |
4382 | if (len) { /* this SV was SvIsCOW_normal(sv) */ | |
4383 | /* we need to find the SV pointing to us. */ | |
4384 | SV *current = SV_COW_NEXT_SV(after); | |
4385 | ||
4386 | if (current == sv) { | |
4387 | /* The SV we point to points back to us (there were only two of us | |
4388 | in the loop.) | |
4389 | Hence other SV is no longer copy on write either. */ | |
4390 | SvFAKE_off(after); | |
4391 | SvREADONLY_off(after); | |
4392 | } else { | |
4393 | /* We need to follow the pointers around the loop. */ | |
4394 | SV *next; | |
4395 | while ((next = SV_COW_NEXT_SV(current)) != sv) { | |
4396 | assert (next); | |
4397 | current = next; | |
4398 | /* don't loop forever if the structure is bust, and we have | |
4399 | a pointer into a closed loop. */ | |
4400 | assert (current != after); | |
e419cbc5 | 4401 | assert (SvPVX(current) == pvx); |
765f542d NC |
4402 | } |
4403 | /* Make the SV before us point to the SV after us. */ | |
a29f6d03 | 4404 | SV_COW_NEXT_SV_SET(current, after); |
765f542d NC |
4405 | } |
4406 | } else { | |
4407 | unsharepvn(pvx, SvUTF8(sv) ? -(I32)cur : cur, hash); | |
4408 | } | |
4409 | } | |
4410 | ||
4411 | int | |
4412 | Perl_sv_release_IVX(pTHX_ register SV *sv) | |
4413 | { | |
4414 | if (SvIsCOW(sv)) | |
4415 | sv_force_normal_flags(sv, 0); | |
4416 | return SvOOK_off(sv); | |
4417 | } | |
4418 | #endif | |
645c22ef DM |
4419 | /* |
4420 | =for apidoc sv_force_normal_flags | |
4421 | ||
4422 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
4423 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
765f542d NC |
4424 | an xpvmg; if we're a copy-on-write scalar, this is the on-write time when |
4425 | we do the copy, and is also used locally. If C<SV_COW_DROP_PV> is set | |
4426 | then a copy-on-write scalar drops its PV buffer (if any) and becomes | |
4427 | SvPOK_off rather than making a copy. (Used where this scalar is about to be | |
d3050d9d | 4428 | set to some other value.) In addition, the C<flags> parameter gets passed to |
765f542d NC |
4429 | C<sv_unref_flags()> when unrefing. C<sv_force_normal> calls this function |
4430 | with flags set to 0. | |
645c22ef DM |
4431 | |
4432 | =cut | |
4433 | */ | |
4434 | ||
6fc92669 | 4435 | void |
840a7b70 | 4436 | Perl_sv_force_normal_flags(pTHX_ register SV *sv, U32 flags) |
0f15f207 | 4437 | { |
765f542d NC |
4438 | #ifdef PERL_COPY_ON_WRITE |
4439 | if (SvREADONLY(sv)) { | |
4440 | /* At this point I believe I should acquire a global SV mutex. */ | |
4441 | if (SvFAKE(sv)) { | |
4442 | char *pvx = SvPVX(sv); | |
4443 | STRLEN len = SvLEN(sv); | |
4444 | STRLEN cur = SvCUR(sv); | |
4445 | U32 hash = SvUVX(sv); | |
4446 | SV *next = SV_COW_NEXT_SV(sv); /* next COW sv in the loop. */ | |
46187eeb NC |
4447 | if (DEBUG_C_TEST) { |
4448 | PerlIO_printf(Perl_debug_log, | |
4449 | "Copy on write: Force normal %ld\n", | |
4450 | (long) flags); | |
e419cbc5 | 4451 | sv_dump(sv); |
46187eeb | 4452 | } |
765f542d NC |
4453 | SvFAKE_off(sv); |
4454 | SvREADONLY_off(sv); | |
4455 | /* This SV doesn't own the buffer, so need to New() a new one: */ | |
4456 | SvPVX(sv) = 0; | |
4457 | SvLEN(sv) = 0; | |
4458 | if (flags & SV_COW_DROP_PV) { | |
4459 | /* OK, so we don't need to copy our buffer. */ | |
4460 | SvPOK_off(sv); | |
4461 | } else { | |
4462 | SvGROW(sv, cur + 1); | |
4463 | Move(pvx,SvPVX(sv),cur,char); | |
4464 | SvCUR(sv) = cur; | |
4465 | *SvEND(sv) = '\0'; | |
4466 | } | |
e419cbc5 | 4467 | sv_release_COW(sv, pvx, cur, len, hash, next); |
46187eeb | 4468 | if (DEBUG_C_TEST) { |
e419cbc5 | 4469 | sv_dump(sv); |
46187eeb | 4470 | } |
765f542d NC |
4471 | } |
4472 | else if (PL_curcop != &PL_compiling) | |
4473 | Perl_croak(aTHX_ PL_no_modify); | |
4474 | /* At this point I believe that I can drop the global SV mutex. */ | |
4475 | } | |
4476 | #else | |
2213622d | 4477 | if (SvREADONLY(sv)) { |
1c846c1f NIS |
4478 | if (SvFAKE(sv)) { |
4479 | char *pvx = SvPVX(sv); | |
4480 | STRLEN len = SvCUR(sv); | |
4481 | U32 hash = SvUVX(sv); | |
10bcdfd6 NC |
4482 | SvFAKE_off(sv); |
4483 | SvREADONLY_off(sv); | |
1c846c1f NIS |
4484 | SvGROW(sv, len + 1); |
4485 | Move(pvx,SvPVX(sv),len,char); | |
4486 | *SvEND(sv) = '\0'; | |
25716404 | 4487 | unsharepvn(pvx, SvUTF8(sv) ? -(I32)len : len, hash); |
1c846c1f NIS |
4488 | } |
4489 | else if (PL_curcop != &PL_compiling) | |
cea2e8a9 | 4490 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 4491 | } |
765f542d | 4492 | #endif |
2213622d | 4493 | if (SvROK(sv)) |
840a7b70 | 4494 | sv_unref_flags(sv, flags); |
6fc92669 GS |
4495 | else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) |
4496 | sv_unglob(sv); | |
0f15f207 | 4497 | } |
1c846c1f | 4498 | |
645c22ef DM |
4499 | /* |
4500 | =for apidoc sv_force_normal | |
4501 | ||
4502 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
4503 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
4504 | an xpvmg. See also C<sv_force_normal_flags>. | |
4505 | ||
4506 | =cut | |
4507 | */ | |
4508 | ||
840a7b70 IZ |
4509 | void |
4510 | Perl_sv_force_normal(pTHX_ register SV *sv) | |
4511 | { | |
4512 | sv_force_normal_flags(sv, 0); | |
4513 | } | |
4514 | ||
954c1994 GS |
4515 | /* |
4516 | =for apidoc sv_chop | |
4517 | ||
1c846c1f | 4518 | Efficient removal of characters from the beginning of the string buffer. |
954c1994 GS |
4519 | SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside |
4520 | the string buffer. The C<ptr> becomes the first character of the adjusted | |
645c22ef | 4521 | string. Uses the "OOK hack". |
31869a79 AE |
4522 | Beware: after this function returns, C<ptr> and SvPVX(sv) may no longer |
4523 | refer to the same chunk of data. | |
954c1994 GS |
4524 | |
4525 | =cut | |
4526 | */ | |
4527 | ||
79072805 | 4528 | void |
645c22ef | 4529 | Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) |
79072805 LW |
4530 | { |
4531 | register STRLEN delta; | |
a0d0e21e | 4532 | if (!ptr || !SvPOKp(sv)) |
79072805 | 4533 | return; |
31869a79 | 4534 | delta = ptr - SvPVX(sv); |
2213622d | 4535 | SV_CHECK_THINKFIRST(sv); |
79072805 LW |
4536 | if (SvTYPE(sv) < SVt_PVIV) |
4537 | sv_upgrade(sv,SVt_PVIV); | |
4538 | ||
4539 | if (!SvOOK(sv)) { | |
50483b2c JD |
4540 | if (!SvLEN(sv)) { /* make copy of shared string */ |
4541 | char *pvx = SvPVX(sv); | |
4542 | STRLEN len = SvCUR(sv); | |
4543 | SvGROW(sv, len + 1); | |
4544 | Move(pvx,SvPVX(sv),len,char); | |
4545 | *SvEND(sv) = '\0'; | |
4546 | } | |
463ee0b2 | 4547 | SvIVX(sv) = 0; |
a4bfb290 AB |
4548 | /* Same SvOOK_on but SvOOK_on does a SvIOK_off |
4549 | and we do that anyway inside the SvNIOK_off | |
4550 | */ | |
4551 | SvFLAGS(sv) |= SVf_OOK; | |
79072805 | 4552 | } |
a4bfb290 | 4553 | SvNIOK_off(sv); |
79072805 LW |
4554 | SvLEN(sv) -= delta; |
4555 | SvCUR(sv) -= delta; | |
463ee0b2 LW |
4556 | SvPVX(sv) += delta; |
4557 | SvIVX(sv) += delta; | |
79072805 LW |
4558 | } |
4559 | ||
09540bc3 JH |
4560 | /* sv_catpvn() is now a macro using Perl_sv_catpvn_flags(); |
4561 | * this function provided for binary compatibility only | |
4562 | */ | |
4563 | ||
4564 | void | |
4565 | Perl_sv_catpvn(pTHX_ SV *dsv, const char* sstr, STRLEN slen) | |
4566 | { | |
4567 | sv_catpvn_flags(dsv, sstr, slen, SV_GMAGIC); | |
4568 | } | |
4569 | ||
954c1994 GS |
4570 | /* |
4571 | =for apidoc sv_catpvn | |
4572 | ||
4573 | Concatenates the string onto the end of the string which is in the SV. The | |
d5ce4a7c GA |
4574 | C<len> indicates number of bytes to copy. If the SV has the UTF8 |
4575 | status set, then the bytes appended should be valid UTF8. | |
4576 | Handles 'get' magic, but not 'set' magic. See C<sv_catpvn_mg>. | |
954c1994 | 4577 | |
8d6d96c1 HS |
4578 | =for apidoc sv_catpvn_flags |
4579 | ||
4580 | Concatenates the string onto the end of the string which is in the SV. The | |
4581 | C<len> indicates number of bytes to copy. If the SV has the UTF8 | |
4582 | status set, then the bytes appended should be valid UTF8. | |
4583 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<dsv> if | |
4584 | appropriate, else not. C<sv_catpvn> and C<sv_catpvn_nomg> are implemented | |
4585 | in terms of this function. | |
4586 | ||
4587 | =cut | |
4588 | */ | |
4589 | ||
4590 | void | |
4591 | Perl_sv_catpvn_flags(pTHX_ register SV *dsv, register const char *sstr, register STRLEN slen, I32 flags) | |
4592 | { | |
4593 | STRLEN dlen; | |
4594 | char *dstr; | |
4595 | ||
4596 | dstr = SvPV_force_flags(dsv, dlen, flags); | |
4597 | SvGROW(dsv, dlen + slen + 1); | |
4598 | if (sstr == dstr) | |
4599 | sstr = SvPVX(dsv); | |
4600 | Move(sstr, SvPVX(dsv) + dlen, slen, char); | |
4601 | SvCUR(dsv) += slen; | |
4602 | *SvEND(dsv) = '\0'; | |
4603 | (void)SvPOK_only_UTF8(dsv); /* validate pointer */ | |
4604 | SvTAINT(dsv); | |
79072805 LW |
4605 | } |
4606 | ||
954c1994 GS |
4607 | /* |
4608 | =for apidoc sv_catpvn_mg | |
4609 | ||
4610 | Like C<sv_catpvn>, but also handles 'set' magic. | |
4611 | ||
4612 | =cut | |
4613 | */ | |
4614 | ||
79072805 | 4615 | void |
864dbfa3 | 4616 | Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
ef50df4b GS |
4617 | { |
4618 | sv_catpvn(sv,ptr,len); | |
4619 | SvSETMAGIC(sv); | |
4620 | } | |
4621 | ||
09540bc3 JH |
4622 | /* sv_catsv() is now a macro using Perl_sv_catsv_flags(); |
4623 | * this function provided for binary compatibility only | |
4624 | */ | |
4625 | ||
4626 | void | |
4627 | Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr) | |
4628 | { | |
4629 | sv_catsv_flags(dstr, sstr, SV_GMAGIC); | |
4630 | } | |
4631 | ||
954c1994 GS |
4632 | /* |
4633 | =for apidoc sv_catsv | |
4634 | ||
13e8c8e3 JH |
4635 | Concatenates the string from SV C<ssv> onto the end of the string in |
4636 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. Handles 'get' magic, but | |
4637 | not 'set' magic. See C<sv_catsv_mg>. | |
954c1994 | 4638 | |
8d6d96c1 HS |
4639 | =for apidoc sv_catsv_flags |
4640 | ||
4641 | Concatenates the string from SV C<ssv> onto the end of the string in | |
4642 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. If C<flags> has C<SV_GMAGIC> | |
4643 | bit set, will C<mg_get> on the SVs if appropriate, else not. C<sv_catsv> | |
4644 | and C<sv_catsv_nomg> are implemented in terms of this function. | |
4645 | ||
4646 | =cut */ | |
4647 | ||
ef50df4b | 4648 | void |
8d6d96c1 | 4649 | Perl_sv_catsv_flags(pTHX_ SV *dsv, register SV *ssv, I32 flags) |
79072805 | 4650 | { |
13e8c8e3 JH |
4651 | char *spv; |
4652 | STRLEN slen; | |
46199a12 | 4653 | if (!ssv) |
79072805 | 4654 | return; |
46199a12 | 4655 | if ((spv = SvPV(ssv, slen))) { |
4fd84b44 AD |
4656 | /* sutf8 and dutf8 were type bool, but under USE_ITHREADS, |
4657 | gcc version 2.95.2 20000220 (Debian GNU/Linux) for | |
8cf8f3d1 NIS |
4658 | Linux xxx 2.2.17 on sparc64 with gcc -O2, we erroneously |
4659 | get dutf8 = 0x20000000, (i.e. SVf_UTF8) even though | |
4fd84b44 AD |
4660 | dsv->sv_flags doesn't have that bit set. |
4661 | Andy Dougherty 12 Oct 2001 | |
4662 | */ | |
4663 | I32 sutf8 = DO_UTF8(ssv); | |
4664 | I32 dutf8; | |
13e8c8e3 | 4665 | |
8d6d96c1 HS |
4666 | if (SvGMAGICAL(dsv) && (flags & SV_GMAGIC)) |
4667 | mg_get(dsv); | |
4668 | dutf8 = DO_UTF8(dsv); | |
4669 | ||
4670 | if (dutf8 != sutf8) { | |
13e8c8e3 | 4671 | if (dutf8) { |
46199a12 | 4672 | /* Not modifying source SV, so taking a temporary copy. */ |
8d6d96c1 | 4673 | SV* csv = sv_2mortal(newSVpvn(spv, slen)); |
13e8c8e3 | 4674 | |
46199a12 | 4675 | sv_utf8_upgrade(csv); |
8d6d96c1 | 4676 | spv = SvPV(csv, slen); |
13e8c8e3 | 4677 | } |
8d6d96c1 HS |
4678 | else |
4679 | sv_utf8_upgrade_nomg(dsv); | |
e84ff256 | 4680 | } |
8d6d96c1 | 4681 | sv_catpvn_nomg(dsv, spv, slen); |
560a288e | 4682 | } |
79072805 LW |
4683 | } |
4684 | ||
954c1994 GS |
4685 | /* |
4686 | =for apidoc sv_catsv_mg | |
4687 | ||
4688 | Like C<sv_catsv>, but also handles 'set' magic. | |
4689 | ||
4690 | =cut | |
4691 | */ | |
4692 | ||
79072805 | 4693 | void |
46199a12 | 4694 | Perl_sv_catsv_mg(pTHX_ SV *dsv, register SV *ssv) |
ef50df4b | 4695 | { |
46199a12 JH |
4696 | sv_catsv(dsv,ssv); |
4697 | SvSETMAGIC(dsv); | |
ef50df4b GS |
4698 | } |
4699 | ||
954c1994 GS |
4700 | /* |
4701 | =for apidoc sv_catpv | |
4702 | ||
4703 | Concatenates the string onto the end of the string which is in the SV. | |
d5ce4a7c GA |
4704 | If the SV has the UTF8 status set, then the bytes appended should be |
4705 | valid UTF8. Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>. | |
954c1994 | 4706 | |
d5ce4a7c | 4707 | =cut */ |
954c1994 | 4708 | |
ef50df4b | 4709 | void |
0c981600 | 4710 | Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
4711 | { |
4712 | register STRLEN len; | |
463ee0b2 | 4713 | STRLEN tlen; |
748a9306 | 4714 | char *junk; |
79072805 | 4715 | |
0c981600 | 4716 | if (!ptr) |
79072805 | 4717 | return; |
748a9306 | 4718 | junk = SvPV_force(sv, tlen); |
0c981600 | 4719 | len = strlen(ptr); |
463ee0b2 | 4720 | SvGROW(sv, tlen + len + 1); |
0c981600 JH |
4721 | if (ptr == junk) |
4722 | ptr = SvPVX(sv); | |
4723 | Move(ptr,SvPVX(sv)+tlen,len+1,char); | |
79072805 | 4724 | SvCUR(sv) += len; |
d41ff1b8 | 4725 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4726 | SvTAINT(sv); |
79072805 LW |
4727 | } |
4728 | ||
954c1994 GS |
4729 | /* |
4730 | =for apidoc sv_catpv_mg | |
4731 | ||
4732 | Like C<sv_catpv>, but also handles 'set' magic. | |
4733 | ||
4734 | =cut | |
4735 | */ | |
4736 | ||
ef50df4b | 4737 | void |
0c981600 | 4738 | Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b | 4739 | { |
0c981600 | 4740 | sv_catpv(sv,ptr); |
ef50df4b GS |
4741 | SvSETMAGIC(sv); |
4742 | } | |
4743 | ||
645c22ef DM |
4744 | /* |
4745 | =for apidoc newSV | |
4746 | ||
4747 | Create a new null SV, or if len > 0, create a new empty SVt_PV type SV | |
4748 | with an initial PV allocation of len+1. Normally accessed via the C<NEWSV> | |
4749 | macro. | |
4750 | ||
4751 | =cut | |
4752 | */ | |
4753 | ||
79072805 | 4754 | SV * |
864dbfa3 | 4755 | Perl_newSV(pTHX_ STRLEN len) |
79072805 LW |
4756 | { |
4757 | register SV *sv; | |
1c846c1f | 4758 | |
4561caa4 | 4759 | new_SV(sv); |
79072805 LW |
4760 | if (len) { |
4761 | sv_upgrade(sv, SVt_PV); | |
4762 | SvGROW(sv, len + 1); | |
4763 | } | |
4764 | return sv; | |
4765 | } | |
954c1994 | 4766 | /* |
92110913 | 4767 | =for apidoc sv_magicext |
954c1994 | 4768 | |
68795e93 | 4769 | Adds magic to an SV, upgrading it if necessary. Applies the |
92110913 NIS |
4770 | supplied vtable and returns pointer to the magic added. |
4771 | ||
4772 | Note that sv_magicext will allow things that sv_magic will not. | |
68795e93 | 4773 | In particular you can add magic to SvREADONLY SVs and and more than |
92110913 | 4774 | one instance of the same 'how' |
645c22ef | 4775 | |
92110913 | 4776 | I C<namelen> is greater then zero then a savepvn() I<copy> of C<name> is stored, |
68795e93 NIS |
4777 | if C<namelen> is zero then C<name> is stored as-is and - as another special |
4778 | case - if C<(name && namelen == HEf_SVKEY)> then C<name> is assumed to contain | |
92110913 NIS |
4779 | an C<SV*> and has its REFCNT incremented |
4780 | ||
4781 | (This is now used as a subroutine by sv_magic.) | |
954c1994 GS |
4782 | |
4783 | =cut | |
4784 | */ | |
92110913 NIS |
4785 | MAGIC * |
4786 | Perl_sv_magicext(pTHX_ SV* sv, SV* obj, int how, MGVTBL *vtable, | |
4787 | const char* name, I32 namlen) | |
79072805 LW |
4788 | { |
4789 | MAGIC* mg; | |
68795e93 | 4790 | |
92110913 NIS |
4791 | if (SvTYPE(sv) < SVt_PVMG) { |
4792 | (void)SvUPGRADE(sv, SVt_PVMG); | |
463ee0b2 | 4793 | } |
79072805 LW |
4794 | Newz(702,mg, 1, MAGIC); |
4795 | mg->mg_moremagic = SvMAGIC(sv); | |
79072805 | 4796 | SvMAGIC(sv) = mg; |
75f9d97a | 4797 | |
18808301 | 4798 | /* Some magic sontains a reference loop, where the sv and object refer to |
bb03859b RS |
4799 | each other. To prevent a reference loop that would prevent such |
4800 | objects being freed, we look for such loops and if we find one we | |
87f0b213 JH |
4801 | avoid incrementing the object refcount. |
4802 | ||
4803 | Note we cannot do this to avoid self-tie loops as intervening RV must | |
b5ccf5f2 | 4804 | have its REFCNT incremented to keep it in existence. |
87f0b213 JH |
4805 | |
4806 | */ | |
14befaf4 DM |
4807 | if (!obj || obj == sv || |
4808 | how == PERL_MAGIC_arylen || | |
4809 | how == PERL_MAGIC_qr || | |
75f9d97a JH |
4810 | (SvTYPE(obj) == SVt_PVGV && |
4811 | (GvSV(obj) == sv || GvHV(obj) == (HV*)sv || GvAV(obj) == (AV*)sv || | |
4812 | GvCV(obj) == (CV*)sv || GvIOp(obj) == (IO*)sv || | |
2628be26 | 4813 | GvFORM(obj) == (CV*)sv))) |
75f9d97a | 4814 | { |
8990e307 | 4815 | mg->mg_obj = obj; |
75f9d97a | 4816 | } |
85e6fe83 | 4817 | else { |
8990e307 | 4818 | mg->mg_obj = SvREFCNT_inc(obj); |
85e6fe83 LW |
4819 | mg->mg_flags |= MGf_REFCOUNTED; |
4820 | } | |
b5ccf5f2 YST |
4821 | |
4822 | /* Normal self-ties simply pass a null object, and instead of | |
4823 | using mg_obj directly, use the SvTIED_obj macro to produce a | |
4824 | new RV as needed. For glob "self-ties", we are tieing the PVIO | |
4825 | with an RV obj pointing to the glob containing the PVIO. In | |
4826 | this case, to avoid a reference loop, we need to weaken the | |
4827 | reference. | |
4828 | */ | |
4829 | ||
4830 | if (how == PERL_MAGIC_tiedscalar && SvTYPE(sv) == SVt_PVIO && | |
4831 | obj && SvROK(obj) && GvIO(SvRV(obj)) == (IO*)sv) | |
4832 | { | |
4833 | sv_rvweaken(obj); | |
4834 | } | |
4835 | ||
79072805 | 4836 | mg->mg_type = how; |
565764a8 | 4837 | mg->mg_len = namlen; |
9cbac4c7 | 4838 | if (name) { |
92110913 | 4839 | if (namlen > 0) |
1edc1566 | 4840 | mg->mg_ptr = savepvn(name, namlen); |
c6ee37c5 | 4841 | else if (namlen == HEf_SVKEY) |
1edc1566 | 4842 | mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name); |
68795e93 | 4843 | else |
92110913 | 4844 | mg->mg_ptr = (char *) name; |
9cbac4c7 | 4845 | } |
92110913 | 4846 | mg->mg_virtual = vtable; |
68795e93 | 4847 | |
92110913 NIS |
4848 | mg_magical(sv); |
4849 | if (SvGMAGICAL(sv)) | |
4850 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
4851 | return mg; | |
4852 | } | |
4853 | ||
4854 | /* | |
4855 | =for apidoc sv_magic | |
1c846c1f | 4856 | |
92110913 NIS |
4857 | Adds magic to an SV. First upgrades C<sv> to type C<SVt_PVMG> if necessary, |
4858 | then adds a new magic item of type C<how> to the head of the magic list. | |
4859 | ||
4860 | =cut | |
4861 | */ | |
4862 | ||
4863 | void | |
4864 | Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen) | |
68795e93 | 4865 | { |
92110913 NIS |
4866 | MAGIC* mg; |
4867 | MGVTBL *vtable = 0; | |
4868 | ||
765f542d NC |
4869 | #ifdef PERL_COPY_ON_WRITE |
4870 | if (SvIsCOW(sv)) | |
4871 | sv_force_normal_flags(sv, 0); | |
4872 | #endif | |
92110913 NIS |
4873 | if (SvREADONLY(sv)) { |
4874 | if (PL_curcop != &PL_compiling | |
4875 | && how != PERL_MAGIC_regex_global | |
4876 | && how != PERL_MAGIC_bm | |
4877 | && how != PERL_MAGIC_fm | |
4878 | && how != PERL_MAGIC_sv | |
4879 | ) | |
4880 | { | |
4881 | Perl_croak(aTHX_ PL_no_modify); | |
4882 | } | |
4883 | } | |
4884 | if (SvMAGICAL(sv) || (how == PERL_MAGIC_taint && SvTYPE(sv) >= SVt_PVMG)) { | |
4885 | if (SvMAGIC(sv) && (mg = mg_find(sv, how))) { | |
68795e93 NIS |
4886 | /* sv_magic() refuses to add a magic of the same 'how' as an |
4887 | existing one | |
92110913 NIS |
4888 | */ |
4889 | if (how == PERL_MAGIC_taint) | |
4890 | mg->mg_len |= 1; | |
4891 | return; | |
4892 | } | |
4893 | } | |
68795e93 | 4894 | |
79072805 | 4895 | switch (how) { |
14befaf4 | 4896 | case PERL_MAGIC_sv: |
92110913 | 4897 | vtable = &PL_vtbl_sv; |
79072805 | 4898 | break; |
14befaf4 | 4899 | case PERL_MAGIC_overload: |
92110913 | 4900 | vtable = &PL_vtbl_amagic; |
a0d0e21e | 4901 | break; |
14befaf4 | 4902 | case PERL_MAGIC_overload_elem: |
92110913 | 4903 | vtable = &PL_vtbl_amagicelem; |
a0d0e21e | 4904 | break; |
14befaf4 | 4905 | case PERL_MAGIC_overload_table: |
92110913 | 4906 | vtable = &PL_vtbl_ovrld; |
a0d0e21e | 4907 | break; |
14befaf4 | 4908 | case PERL_MAGIC_bm: |
92110913 | 4909 | vtable = &PL_vtbl_bm; |
79072805 | 4910 | break; |
14befaf4 | 4911 | case PERL_MAGIC_regdata: |
92110913 | 4912 | vtable = &PL_vtbl_regdata; |
6cef1e77 | 4913 | break; |
14befaf4 | 4914 | case PERL_MAGIC_regdatum: |
92110913 | 4915 | vtable = &PL_vtbl_regdatum; |
6cef1e77 | 4916 | break; |
14befaf4 | 4917 | case PERL_MAGIC_env: |
92110913 | 4918 | vtable = &PL_vtbl_env; |
79072805 | 4919 | break; |
14befaf4 | 4920 | case PERL_MAGIC_fm: |
92110913 | 4921 | vtable = &PL_vtbl_fm; |
55497cff | 4922 | break; |
14befaf4 | 4923 | case PERL_MAGIC_envelem: |
92110913 | 4924 | vtable = &PL_vtbl_envelem; |
79072805 | 4925 | break; |
14befaf4 | 4926 | case PERL_MAGIC_regex_global: |
92110913 | 4927 | vtable = &PL_vtbl_mglob; |
93a17b20 | 4928 | break; |
14befaf4 | 4929 | case PERL_MAGIC_isa: |
92110913 | 4930 | vtable = &PL_vtbl_isa; |
463ee0b2 | 4931 | break; |
14befaf4 | 4932 | case PERL_MAGIC_isaelem: |
92110913 | 4933 | vtable = &PL_vtbl_isaelem; |
463ee0b2 | 4934 | break; |
14befaf4 | 4935 | case PERL_MAGIC_nkeys: |
92110913 | 4936 | vtable = &PL_vtbl_nkeys; |
16660edb | 4937 | break; |
14befaf4 | 4938 | case PERL_MAGIC_dbfile: |
92110913 | 4939 | vtable = 0; |
93a17b20 | 4940 | break; |
14befaf4 | 4941 | case PERL_MAGIC_dbline: |
92110913 | 4942 | vtable = &PL_vtbl_dbline; |
79072805 | 4943 | break; |
36477c24 | 4944 | #ifdef USE_LOCALE_COLLATE |
14befaf4 | 4945 | case PERL_MAGIC_collxfrm: |
92110913 | 4946 | vtable = &PL_vtbl_collxfrm; |
bbce6d69 | 4947 | break; |
36477c24 | 4948 | #endif /* USE_LOCALE_COLLATE */ |
14befaf4 | 4949 | case PERL_MAGIC_tied: |
92110913 | 4950 | vtable = &PL_vtbl_pack; |
463ee0b2 | 4951 | break; |
14befaf4 DM |
4952 | case PERL_MAGIC_tiedelem: |
4953 | case PERL_MAGIC_tiedscalar: | |
92110913 | 4954 | vtable = &PL_vtbl_packelem; |
463ee0b2 | 4955 | break; |
14befaf4 | 4956 | case PERL_MAGIC_qr: |
92110913 | 4957 | vtable = &PL_vtbl_regexp; |
c277df42 | 4958 | break; |
14befaf4 | 4959 | case PERL_MAGIC_sig: |
92110913 | 4960 | vtable = &PL_vtbl_sig; |
79072805 | 4961 | break; |
14befaf4 | 4962 | case PERL_MAGIC_sigelem: |
92110913 | 4963 | vtable = &PL_vtbl_sigelem; |
79072805 | 4964 | break; |
14befaf4 | 4965 | case PERL_MAGIC_taint: |
92110913 | 4966 | vtable = &PL_vtbl_taint; |
463ee0b2 | 4967 | break; |
14befaf4 | 4968 | case PERL_MAGIC_uvar: |
92110913 | 4969 | vtable = &PL_vtbl_uvar; |
79072805 | 4970 | break; |
14befaf4 | 4971 | case PERL_MAGIC_vec: |
92110913 | 4972 | vtable = &PL_vtbl_vec; |
79072805 | 4973 | break; |
ece467f9 JP |
4974 | case PERL_MAGIC_vstring: |
4975 | vtable = 0; | |
4976 | break; | |
7e8c5dac HS |
4977 | case PERL_MAGIC_utf8: |
4978 | vtable = &PL_vtbl_utf8; | |
4979 | break; | |
14befaf4 | 4980 | case PERL_MAGIC_substr: |
92110913 | 4981 | vtable = &PL_vtbl_substr; |
79072805 | 4982 | break; |
14befaf4 | 4983 | case PERL_MAGIC_defelem: |
92110913 | 4984 | vtable = &PL_vtbl_defelem; |
5f05dabc | 4985 | break; |
14befaf4 | 4986 | case PERL_MAGIC_glob: |
92110913 | 4987 | vtable = &PL_vtbl_glob; |
79072805 | 4988 | break; |
14befaf4 | 4989 | case PERL_MAGIC_arylen: |
92110913 | 4990 | vtable = &PL_vtbl_arylen; |
79072805 | 4991 | break; |
14befaf4 | 4992 | case PERL_MAGIC_pos: |
92110913 | 4993 | vtable = &PL_vtbl_pos; |
a0d0e21e | 4994 | break; |
14befaf4 | 4995 | case PERL_MAGIC_backref: |
92110913 | 4996 | vtable = &PL_vtbl_backref; |
810b8aa5 | 4997 | break; |
14befaf4 DM |
4998 | case PERL_MAGIC_ext: |
4999 | /* Reserved for use by extensions not perl internals. */ | |
4633a7c4 LW |
5000 | /* Useful for attaching extension internal data to perl vars. */ |
5001 | /* Note that multiple extensions may clash if magical scalars */ | |
5002 | /* etc holding private data from one are passed to another. */ | |
a0d0e21e | 5003 | break; |
79072805 | 5004 | default: |
14befaf4 | 5005 | Perl_croak(aTHX_ "Don't know how to handle magic of type \\%o", how); |
463ee0b2 | 5006 | } |
68795e93 | 5007 | |
92110913 NIS |
5008 | /* Rest of work is done else where */ |
5009 | mg = sv_magicext(sv,obj,how,vtable,name,namlen); | |
68795e93 | 5010 | |
92110913 NIS |
5011 | switch (how) { |
5012 | case PERL_MAGIC_taint: | |
5013 | mg->mg_len = 1; | |
5014 | break; | |
5015 | case PERL_MAGIC_ext: | |
5016 | case PERL_MAGIC_dbfile: | |
5017 | SvRMAGICAL_on(sv); | |
5018 | break; | |
5019 | } | |
463ee0b2 LW |
5020 | } |
5021 | ||
c461cf8f JH |
5022 | /* |
5023 | =for apidoc sv_unmagic | |
5024 | ||
645c22ef | 5025 | Removes all magic of type C<type> from an SV. |
c461cf8f JH |
5026 | |
5027 | =cut | |
5028 | */ | |
5029 | ||
463ee0b2 | 5030 | int |
864dbfa3 | 5031 | Perl_sv_unmagic(pTHX_ SV *sv, int type) |
463ee0b2 LW |
5032 | { |
5033 | MAGIC* mg; | |
5034 | MAGIC** mgp; | |
91bba347 | 5035 | if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv)) |
463ee0b2 LW |
5036 | return 0; |
5037 | mgp = &SvMAGIC(sv); | |
5038 | for (mg = *mgp; mg; mg = *mgp) { | |
5039 | if (mg->mg_type == type) { | |
5040 | MGVTBL* vtbl = mg->mg_virtual; | |
5041 | *mgp = mg->mg_moremagic; | |
1d7c1841 | 5042 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 | 5043 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
14befaf4 | 5044 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
92110913 | 5045 | if (mg->mg_len > 0) |
1edc1566 | 5046 | Safefree(mg->mg_ptr); |
565764a8 | 5047 | else if (mg->mg_len == HEf_SVKEY) |
1edc1566 | 5048 | SvREFCNT_dec((SV*)mg->mg_ptr); |
7e8c5dac HS |
5049 | else if (mg->mg_type == PERL_MAGIC_utf8 && mg->mg_ptr) |
5050 | Safefree(mg->mg_ptr); | |
9cbac4c7 | 5051 | } |
a0d0e21e LW |
5052 | if (mg->mg_flags & MGf_REFCOUNTED) |
5053 | SvREFCNT_dec(mg->mg_obj); | |
463ee0b2 LW |
5054 | Safefree(mg); |
5055 | } | |
5056 | else | |
5057 | mgp = &mg->mg_moremagic; | |
79072805 | 5058 | } |
91bba347 | 5059 | if (!SvMAGIC(sv)) { |
463ee0b2 | 5060 | SvMAGICAL_off(sv); |
06759ea0 | 5061 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
463ee0b2 LW |
5062 | } |
5063 | ||
5064 | return 0; | |
79072805 LW |
5065 | } |
5066 | ||
c461cf8f JH |
5067 | /* |
5068 | =for apidoc sv_rvweaken | |
5069 | ||
645c22ef DM |
5070 | Weaken a reference: set the C<SvWEAKREF> flag on this RV; give the |
5071 | referred-to SV C<PERL_MAGIC_backref> magic if it hasn't already; and | |
5072 | push a back-reference to this RV onto the array of backreferences | |
5073 | associated with that magic. | |
c461cf8f JH |
5074 | |
5075 | =cut | |
5076 | */ | |
5077 | ||
810b8aa5 | 5078 | SV * |
864dbfa3 | 5079 | Perl_sv_rvweaken(pTHX_ SV *sv) |
810b8aa5 GS |
5080 | { |
5081 | SV *tsv; | |
5082 | if (!SvOK(sv)) /* let undefs pass */ | |
5083 | return sv; | |
5084 | if (!SvROK(sv)) | |
cea2e8a9 | 5085 | Perl_croak(aTHX_ "Can't weaken a nonreference"); |
810b8aa5 | 5086 | else if (SvWEAKREF(sv)) { |
810b8aa5 | 5087 | if (ckWARN(WARN_MISC)) |
9014280d | 5088 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Reference is already weak"); |
810b8aa5 GS |
5089 | return sv; |
5090 | } | |
5091 | tsv = SvRV(sv); | |
5092 | sv_add_backref(tsv, sv); | |
5093 | SvWEAKREF_on(sv); | |
1c846c1f | 5094 | SvREFCNT_dec(tsv); |
810b8aa5 GS |
5095 | return sv; |
5096 | } | |
5097 | ||
645c22ef DM |
5098 | /* Give tsv backref magic if it hasn't already got it, then push a |
5099 | * back-reference to sv onto the array associated with the backref magic. | |
5100 | */ | |
5101 | ||
810b8aa5 | 5102 | STATIC void |
cea2e8a9 | 5103 | S_sv_add_backref(pTHX_ SV *tsv, SV *sv) |
810b8aa5 GS |
5104 | { |
5105 | AV *av; | |
5106 | MAGIC *mg; | |
14befaf4 | 5107 | if (SvMAGICAL(tsv) && (mg = mg_find(tsv, PERL_MAGIC_backref))) |
810b8aa5 GS |
5108 | av = (AV*)mg->mg_obj; |
5109 | else { | |
5110 | av = newAV(); | |
14befaf4 | 5111 | sv_magic(tsv, (SV*)av, PERL_MAGIC_backref, NULL, 0); |
d99b02a1 DM |
5112 | /* av now has a refcnt of 2, which avoids it getting freed |
5113 | * before us during global cleanup. The extra ref is removed | |
5114 | * by magic_killbackrefs() when tsv is being freed */ | |
810b8aa5 | 5115 | } |
d91d49e8 MM |
5116 | if (AvFILLp(av) >= AvMAX(av)) { |
5117 | SV **svp = AvARRAY(av); | |
5118 | I32 i = AvFILLp(av); | |
5119 | while (i >= 0) { | |
5120 | if (svp[i] == &PL_sv_undef) { | |
5121 | svp[i] = sv; /* reuse the slot */ | |
5122 | return; | |
5123 | } | |
5124 | i--; | |
5125 | } | |
5126 | av_extend(av, AvFILLp(av)+1); | |
5127 | } | |
5128 | AvARRAY(av)[++AvFILLp(av)] = sv; /* av_push() */ | |
810b8aa5 GS |
5129 | } |
5130 | ||
645c22ef DM |
5131 | /* delete a back-reference to ourselves from the backref magic associated |
5132 | * with the SV we point to. | |
5133 | */ | |
5134 | ||
1c846c1f | 5135 | STATIC void |
cea2e8a9 | 5136 | S_sv_del_backref(pTHX_ SV *sv) |
810b8aa5 GS |
5137 | { |
5138 | AV *av; | |
5139 | SV **svp; | |
5140 | I32 i; | |
5141 | SV *tsv = SvRV(sv); | |
c04a4dfe | 5142 | MAGIC *mg = NULL; |
14befaf4 | 5143 | if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, PERL_MAGIC_backref))) |
cea2e8a9 | 5144 | Perl_croak(aTHX_ "panic: del_backref"); |
810b8aa5 GS |
5145 | av = (AV *)mg->mg_obj; |
5146 | svp = AvARRAY(av); | |
5147 | i = AvFILLp(av); | |
5148 | while (i >= 0) { | |
5149 | if (svp[i] == sv) { | |
5150 | svp[i] = &PL_sv_undef; /* XXX */ | |
5151 | } | |
5152 | i--; | |
5153 | } | |
5154 | } | |
5155 | ||
954c1994 GS |
5156 | /* |
5157 | =for apidoc sv_insert | |
5158 | ||
5159 | Inserts a string at the specified offset/length within the SV. Similar to | |
5160 | the Perl substr() function. | |
5161 | ||
5162 | =cut | |
5163 | */ | |
5164 | ||
79072805 | 5165 | void |
864dbfa3 | 5166 | Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen) |
79072805 LW |
5167 | { |
5168 | register char *big; | |
5169 | register char *mid; | |
5170 | register char *midend; | |
5171 | register char *bigend; | |
5172 | register I32 i; | |
6ff81951 | 5173 | STRLEN curlen; |
1c846c1f | 5174 | |
79072805 | 5175 | |
8990e307 | 5176 | if (!bigstr) |
cea2e8a9 | 5177 | Perl_croak(aTHX_ "Can't modify non-existent substring"); |
6ff81951 | 5178 | SvPV_force(bigstr, curlen); |
60fa28ff | 5179 | (void)SvPOK_only_UTF8(bigstr); |
6ff81951 GS |
5180 | if (offset + len > curlen) { |
5181 | SvGROW(bigstr, offset+len+1); | |
5182 | Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char); | |
5183 | SvCUR_set(bigstr, offset+len); | |
5184 | } | |
79072805 | 5185 | |
69b47968 | 5186 | SvTAINT(bigstr); |
79072805 LW |
5187 | i = littlelen - len; |
5188 | if (i > 0) { /* string might grow */ | |
a0d0e21e | 5189 | big = SvGROW(bigstr, SvCUR(bigstr) + i + 1); |
79072805 LW |
5190 | mid = big + offset + len; |
5191 | midend = bigend = big + SvCUR(bigstr); | |
5192 | bigend += i; | |
5193 | *bigend = '\0'; | |
5194 | while (midend > mid) /* shove everything down */ | |
5195 | *--bigend = *--midend; | |
5196 | Move(little,big+offset,littlelen,char); | |
5197 | SvCUR(bigstr) += i; | |
5198 | SvSETMAGIC(bigstr); | |
5199 | return; | |
5200 | } | |
5201 | else if (i == 0) { | |
463ee0b2 | 5202 | Move(little,SvPVX(bigstr)+offset,len,char); |
79072805 LW |
5203 | SvSETMAGIC(bigstr); |
5204 | return; | |
5205 | } | |
5206 | ||
463ee0b2 | 5207 | big = SvPVX(bigstr); |
79072805 LW |
5208 | mid = big + offset; |
5209 | midend = mid + len; | |
5210 | bigend = big + SvCUR(bigstr); | |
5211 | ||
5212 | if (midend > bigend) | |
cea2e8a9 | 5213 | Perl_croak(aTHX_ "panic: sv_insert"); |
79072805 LW |
5214 | |
5215 | if (mid - big > bigend - midend) { /* faster to shorten from end */ | |
5216 | if (littlelen) { | |
5217 | Move(little, mid, littlelen,char); | |
5218 | mid += littlelen; | |
5219 | } | |
5220 | i = bigend - midend; | |
5221 | if (i > 0) { | |
5222 | Move(midend, mid, i,char); | |
5223 | mid += i; | |
5224 | } | |
5225 | *mid = '\0'; | |
5226 | SvCUR_set(bigstr, mid - big); | |
5227 | } | |
5228 | /*SUPPRESS 560*/ | |
155aba94 | 5229 | else if ((i = mid - big)) { /* faster from front */ |
79072805 LW |
5230 | midend -= littlelen; |
5231 | mid = midend; | |
5232 | sv_chop(bigstr,midend-i); | |
5233 | big += i; | |
5234 | while (i--) | |
5235 | *--midend = *--big; | |
5236 | if (littlelen) | |
5237 | Move(little, mid, littlelen,char); | |
5238 | } | |
5239 | else if (littlelen) { | |
5240 | midend -= littlelen; | |
5241 | sv_chop(bigstr,midend); | |
5242 | Move(little,midend,littlelen,char); | |
5243 | } | |
5244 | else { | |
5245 | sv_chop(bigstr,midend); | |
5246 | } | |
5247 | SvSETMAGIC(bigstr); | |
5248 | } | |
5249 | ||
c461cf8f JH |
5250 | /* |
5251 | =for apidoc sv_replace | |
5252 | ||
5253 | Make the first argument a copy of the second, then delete the original. | |
645c22ef DM |
5254 | The target SV physically takes over ownership of the body of the source SV |
5255 | and inherits its flags; however, the target keeps any magic it owns, | |
5256 | and any magic in the source is discarded. | |
ff276b08 | 5257 | Note that this is a rather specialist SV copying operation; most of the |
645c22ef | 5258 | time you'll want to use C<sv_setsv> or one of its many macro front-ends. |
c461cf8f JH |
5259 | |
5260 | =cut | |
5261 | */ | |
79072805 LW |
5262 | |
5263 | void | |
864dbfa3 | 5264 | Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv) |
79072805 LW |
5265 | { |
5266 | U32 refcnt = SvREFCNT(sv); | |
765f542d | 5267 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
0453d815 | 5268 | if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL)) |
9014280d | 5269 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "Reference miscount in sv_replace()"); |
93a17b20 | 5270 | if (SvMAGICAL(sv)) { |
a0d0e21e LW |
5271 | if (SvMAGICAL(nsv)) |
5272 | mg_free(nsv); | |
5273 | else | |
5274 | sv_upgrade(nsv, SVt_PVMG); | |
93a17b20 | 5275 | SvMAGIC(nsv) = SvMAGIC(sv); |
a0d0e21e | 5276 | SvFLAGS(nsv) |= SvMAGICAL(sv); |
93a17b20 LW |
5277 | SvMAGICAL_off(sv); |
5278 | SvMAGIC(sv) = 0; | |
5279 | } | |
79072805 LW |
5280 | SvREFCNT(sv) = 0; |
5281 | sv_clear(sv); | |
477f5d66 | 5282 | assert(!SvREFCNT(sv)); |
79072805 | 5283 | StructCopy(nsv,sv,SV); |
d3d0e6f1 NC |
5284 | #ifdef PERL_COPY_ON_WRITE |
5285 | if (SvIsCOW_normal(nsv)) { | |
5286 | /* We need to follow the pointers around the loop to make the | |
5287 | previous SV point to sv, rather than nsv. */ | |
5288 | SV *next; | |
5289 | SV *current = nsv; | |
5290 | while ((next = SV_COW_NEXT_SV(current)) != nsv) { | |
5291 | assert(next); | |
5292 | current = next; | |
5293 | assert(SvPVX(current) == SvPVX(nsv)); | |
5294 | } | |
5295 | /* Make the SV before us point to the SV after us. */ | |
5296 | if (DEBUG_C_TEST) { | |
5297 | PerlIO_printf(Perl_debug_log, "previous is\n"); | |
5298 | sv_dump(current); | |
a29f6d03 NC |
5299 | PerlIO_printf(Perl_debug_log, |
5300 | "move it from 0x%"UVxf" to 0x%"UVxf"\n", | |
d3d0e6f1 NC |
5301 | (UV) SV_COW_NEXT_SV(current), (UV) sv); |
5302 | } | |
a29f6d03 | 5303 | SV_COW_NEXT_SV_SET(current, sv); |
d3d0e6f1 NC |
5304 | } |
5305 | #endif | |
79072805 | 5306 | SvREFCNT(sv) = refcnt; |
1edc1566 | 5307 | SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */ |
463ee0b2 | 5308 | del_SV(nsv); |
79072805 LW |
5309 | } |
5310 | ||
c461cf8f JH |
5311 | /* |
5312 | =for apidoc sv_clear | |
5313 | ||
645c22ef DM |
5314 | Clear an SV: call any destructors, free up any memory used by the body, |
5315 | and free the body itself. The SV's head is I<not> freed, although | |
5316 | its type is set to all 1's so that it won't inadvertently be assumed | |
5317 | to be live during global destruction etc. | |
5318 | This function should only be called when REFCNT is zero. Most of the time | |
5319 | you'll want to call C<sv_free()> (or its macro wrapper C<SvREFCNT_dec>) | |
5320 | instead. | |
c461cf8f JH |
5321 | |
5322 | =cut | |
5323 | */ | |
5324 | ||
79072805 | 5325 | void |
864dbfa3 | 5326 | Perl_sv_clear(pTHX_ register SV *sv) |
79072805 | 5327 | { |
ec12f114 | 5328 | HV* stash; |
79072805 LW |
5329 | assert(sv); |
5330 | assert(SvREFCNT(sv) == 0); | |
5331 | ||
ed6116ce | 5332 | if (SvOBJECT(sv)) { |
3280af22 | 5333 | if (PL_defstash) { /* Still have a symbol table? */ |
39644a26 | 5334 | dSP; |
32251b26 | 5335 | CV* destructor; |
a0d0e21e | 5336 | |
5cc433a6 | 5337 | |
8ebc5c01 | 5338 | |
d460ef45 | 5339 | do { |
4e8e7886 | 5340 | stash = SvSTASH(sv); |
32251b26 | 5341 | destructor = StashHANDLER(stash,DESTROY); |
4e8e7886 | 5342 | if (destructor) { |
5cc433a6 AB |
5343 | SV* tmpref = newRV(sv); |
5344 | SvREADONLY_on(tmpref); /* DESTROY() could be naughty */ | |
4e8e7886 | 5345 | ENTER; |
e788e7d3 | 5346 | PUSHSTACKi(PERLSI_DESTROY); |
4e8e7886 GS |
5347 | EXTEND(SP, 2); |
5348 | PUSHMARK(SP); | |
5cc433a6 | 5349 | PUSHs(tmpref); |
4e8e7886 | 5350 | PUTBACK; |
44389ee9 | 5351 | call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR|G_VOID); |
5cc433a6 AB |
5352 | |
5353 | ||
d3acc0f7 | 5354 | POPSTACK; |
3095d977 | 5355 | SPAGAIN; |
4e8e7886 | 5356 | LEAVE; |
5cc433a6 AB |
5357 | if(SvREFCNT(tmpref) < 2) { |
5358 | /* tmpref is not kept alive! */ | |
5359 | SvREFCNT(sv)--; | |
5360 | SvRV(tmpref) = 0; | |
5361 | SvROK_off(tmpref); | |
5362 | } | |
5363 | SvREFCNT_dec(tmpref); | |
4e8e7886 GS |
5364 | } |
5365 | } while (SvOBJECT(sv) && SvSTASH(sv) != stash); | |
8ebc5c01 | 5366 | |
6f44e0a4 JP |
5367 | |
5368 | if (SvREFCNT(sv)) { | |
5369 | if (PL_in_clean_objs) | |
cea2e8a9 | 5370 | Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'", |
6f44e0a4 JP |
5371 | HvNAME(stash)); |
5372 | /* DESTROY gave object new lease on life */ | |
5373 | return; | |
5374 | } | |
a0d0e21e | 5375 | } |
4e8e7886 | 5376 | |
a0d0e21e | 5377 | if (SvOBJECT(sv)) { |
4e8e7886 | 5378 | SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */ |
a0d0e21e LW |
5379 | SvOBJECT_off(sv); /* Curse the object. */ |
5380 | if (SvTYPE(sv) != SVt_PVIO) | |
3280af22 | 5381 | --PL_sv_objcount; /* XXX Might want something more general */ |
a0d0e21e | 5382 | } |
463ee0b2 | 5383 | } |
524189f1 JH |
5384 | if (SvTYPE(sv) >= SVt_PVMG) { |
5385 | if (SvMAGIC(sv)) | |
5386 | mg_free(sv); | |
5387 | if (SvFLAGS(sv) & SVpad_TYPED) | |
5388 | SvREFCNT_dec(SvSTASH(sv)); | |
5389 | } | |
ec12f114 | 5390 | stash = NULL; |
79072805 | 5391 | switch (SvTYPE(sv)) { |
8990e307 | 5392 | case SVt_PVIO: |
df0bd2f4 GS |
5393 | if (IoIFP(sv) && |
5394 | IoIFP(sv) != PerlIO_stdin() && | |
5f05dabc | 5395 | IoIFP(sv) != PerlIO_stdout() && |
5396 | IoIFP(sv) != PerlIO_stderr()) | |
93578b34 | 5397 | { |
f2b5be74 | 5398 | io_close((IO*)sv, FALSE); |
93578b34 | 5399 | } |
1d7c1841 | 5400 | if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP)) |
1236053a | 5401 | PerlDir_close(IoDIRP(sv)); |
1d7c1841 | 5402 | IoDIRP(sv) = (DIR*)NULL; |
8990e307 LW |
5403 | Safefree(IoTOP_NAME(sv)); |
5404 | Safefree(IoFMT_NAME(sv)); | |
5405 | Safefree(IoBOTTOM_NAME(sv)); | |
a0d0e21e | 5406 | /* FALL THROUGH */ |
79072805 | 5407 | case SVt_PVBM: |
a0d0e21e | 5408 | goto freescalar; |
79072805 | 5409 | case SVt_PVCV: |
748a9306 | 5410 | case SVt_PVFM: |
85e6fe83 | 5411 | cv_undef((CV*)sv); |
a0d0e21e | 5412 | goto freescalar; |
79072805 | 5413 | case SVt_PVHV: |
85e6fe83 | 5414 | hv_undef((HV*)sv); |
a0d0e21e | 5415 | break; |
79072805 | 5416 | case SVt_PVAV: |
85e6fe83 | 5417 | av_undef((AV*)sv); |
a0d0e21e | 5418 | break; |
02270b4e | 5419 | case SVt_PVLV: |
dd28f7bb DM |
5420 | if (LvTYPE(sv) == 'T') { /* for tie: return HE to pool */ |
5421 | SvREFCNT_dec(HeKEY_sv((HE*)LvTARG(sv))); | |
5422 | HeNEXT((HE*)LvTARG(sv)) = PL_hv_fetch_ent_mh; | |
5423 | PL_hv_fetch_ent_mh = (HE*)LvTARG(sv); | |
5424 | } | |
5425 | else if (LvTYPE(sv) != 't') /* unless tie: unrefcnted fake SV** */ | |
5426 | SvREFCNT_dec(LvTARG(sv)); | |
02270b4e | 5427 | goto freescalar; |
a0d0e21e | 5428 | case SVt_PVGV: |
1edc1566 | 5429 | gp_free((GV*)sv); |
a0d0e21e | 5430 | Safefree(GvNAME(sv)); |
ec12f114 JPC |
5431 | /* cannot decrease stash refcount yet, as we might recursively delete |
5432 | ourselves when the refcnt drops to zero. Delay SvREFCNT_dec | |
5433 | of stash until current sv is completely gone. | |
5434 | -- JohnPC, 27 Mar 1998 */ | |
5435 | stash = GvSTASH(sv); | |
a0d0e21e | 5436 | /* FALL THROUGH */ |
79072805 | 5437 | case SVt_PVMG: |
79072805 LW |
5438 | case SVt_PVNV: |
5439 | case SVt_PVIV: | |
a0d0e21e LW |
5440 | freescalar: |
5441 | (void)SvOOK_off(sv); | |
79072805 LW |
5442 | /* FALL THROUGH */ |
5443 | case SVt_PV: | |
a0d0e21e | 5444 | case SVt_RV: |
810b8aa5 GS |
5445 | if (SvROK(sv)) { |
5446 | if (SvWEAKREF(sv)) | |
5447 | sv_del_backref(sv); | |
5448 | else | |
5449 | SvREFCNT_dec(SvRV(sv)); | |
5450 | } | |
765f542d NC |
5451 | #ifdef PERL_COPY_ON_WRITE |
5452 | else if (SvPVX(sv)) { | |
5453 | if (SvIsCOW(sv)) { | |
5454 | /* I believe I need to grab the global SV mutex here and | |
5455 | then recheck the COW status. */ | |
46187eeb NC |
5456 | if (DEBUG_C_TEST) { |
5457 | PerlIO_printf(Perl_debug_log, "Copy on write: clear\n"); | |
e419cbc5 | 5458 | sv_dump(sv); |
46187eeb | 5459 | } |
e419cbc5 | 5460 | sv_release_COW(sv, SvPVX(sv), SvCUR(sv), SvLEN(sv), |
765f542d NC |
5461 | SvUVX(sv), SV_COW_NEXT_SV(sv)); |
5462 | /* And drop it here. */ | |
5463 | SvFAKE_off(sv); | |
5464 | } else if (SvLEN(sv)) { | |
5465 | Safefree(SvPVX(sv)); | |
5466 | } | |
5467 | } | |
5468 | #else | |
1edc1566 | 5469 | else if (SvPVX(sv) && SvLEN(sv)) |
463ee0b2 | 5470 | Safefree(SvPVX(sv)); |
1c846c1f | 5471 | else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) { |
25716404 GS |
5472 | unsharepvn(SvPVX(sv), |
5473 | SvUTF8(sv) ? -(I32)SvCUR(sv) : SvCUR(sv), | |
5474 | SvUVX(sv)); | |
1c846c1f NIS |
5475 | SvFAKE_off(sv); |
5476 | } | |
765f542d | 5477 | #endif |
79072805 | 5478 | break; |
a0d0e21e | 5479 | /* |
79072805 | 5480 | case SVt_NV: |
79072805 | 5481 | case SVt_IV: |
79072805 LW |
5482 | case SVt_NULL: |
5483 | break; | |
a0d0e21e | 5484 | */ |
79072805 LW |
5485 | } |
5486 | ||
5487 | switch (SvTYPE(sv)) { | |
5488 | case SVt_NULL: | |
5489 | break; | |
79072805 LW |
5490 | case SVt_IV: |
5491 | del_XIV(SvANY(sv)); | |
5492 | break; | |
5493 | case SVt_NV: | |
5494 | del_XNV(SvANY(sv)); | |
5495 | break; | |
ed6116ce LW |
5496 | case SVt_RV: |
5497 | del_XRV(SvANY(sv)); | |
5498 | break; | |
79072805 LW |
5499 | case SVt_PV: |
5500 | del_XPV(SvANY(sv)); | |
5501 | break; | |
5502 | case SVt_PVIV: | |
5503 | del_XPVIV(SvANY(sv)); | |
5504 | break; | |
5505 | case SVt_PVNV: | |
5506 | del_XPVNV(SvANY(sv)); | |
5507 | break; | |
5508 | case SVt_PVMG: | |
5509 | del_XPVMG(SvANY(sv)); | |
5510 | break; | |
5511 | case SVt_PVLV: | |
5512 | del_XPVLV(SvANY(sv)); | |
5513 | break; | |
5514 | case SVt_PVAV: | |
5515 | del_XPVAV(SvANY(sv)); | |
5516 | break; | |
5517 | case SVt_PVHV: | |
5518 | del_XPVHV(SvANY(sv)); | |
5519 | break; | |
5520 | case SVt_PVCV: | |
5521 | del_XPVCV(SvANY(sv)); | |
5522 | break; | |
5523 | case SVt_PVGV: | |
5524 | del_XPVGV(SvANY(sv)); | |
ec12f114 JPC |
5525 | /* code duplication for increased performance. */ |
5526 | SvFLAGS(sv) &= SVf_BREAK; | |
5527 | SvFLAGS(sv) |= SVTYPEMASK; | |
5528 | /* decrease refcount of the stash that owns this GV, if any */ | |
5529 | if (stash) | |
5530 | SvREFCNT_dec(stash); | |
5531 | return; /* not break, SvFLAGS reset already happened */ | |
79072805 LW |
5532 | case SVt_PVBM: |
5533 | del_XPVBM(SvANY(sv)); | |
5534 | break; | |
5535 | case SVt_PVFM: | |
5536 | del_XPVFM(SvANY(sv)); | |
5537 | break; | |
8990e307 LW |
5538 | case SVt_PVIO: |
5539 | del_XPVIO(SvANY(sv)); | |
5540 | break; | |
79072805 | 5541 | } |
a0d0e21e | 5542 | SvFLAGS(sv) &= SVf_BREAK; |
8990e307 | 5543 | SvFLAGS(sv) |= SVTYPEMASK; |
79072805 LW |
5544 | } |
5545 | ||
645c22ef DM |
5546 | /* |
5547 | =for apidoc sv_newref | |
5548 | ||
5549 | Increment an SV's reference count. Use the C<SvREFCNT_inc()> wrapper | |
5550 | instead. | |
5551 | ||
5552 | =cut | |
5553 | */ | |
5554 | ||
79072805 | 5555 | SV * |
864dbfa3 | 5556 | Perl_sv_newref(pTHX_ SV *sv) |
79072805 | 5557 | { |
463ee0b2 | 5558 | if (sv) |
4db098f4 | 5559 | (SvREFCNT(sv))++; |
79072805 LW |
5560 | return sv; |
5561 | } | |
5562 | ||
c461cf8f JH |
5563 | /* |
5564 | =for apidoc sv_free | |
5565 | ||
645c22ef DM |
5566 | Decrement an SV's reference count, and if it drops to zero, call |
5567 | C<sv_clear> to invoke destructors and free up any memory used by | |
5568 | the body; finally, deallocate the SV's head itself. | |
5569 | Normally called via a wrapper macro C<SvREFCNT_dec>. | |
c461cf8f JH |
5570 | |
5571 | =cut | |
5572 | */ | |
5573 | ||
79072805 | 5574 | void |
864dbfa3 | 5575 | Perl_sv_free(pTHX_ SV *sv) |
79072805 LW |
5576 | { |
5577 | if (!sv) | |
5578 | return; | |
a0d0e21e LW |
5579 | if (SvREFCNT(sv) == 0) { |
5580 | if (SvFLAGS(sv) & SVf_BREAK) | |
645c22ef DM |
5581 | /* this SV's refcnt has been artificially decremented to |
5582 | * trigger cleanup */ | |
a0d0e21e | 5583 | return; |
3280af22 | 5584 | if (PL_in_clean_all) /* All is fair */ |
1edc1566 | 5585 | return; |
d689ffdd JP |
5586 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
5587 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
5588 | SvREFCNT(sv) = (~(U32)0)/2; | |
5589 | return; | |
5590 | } | |
0453d815 | 5591 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 5592 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "Attempt to free unreferenced scalar"); |
79072805 LW |
5593 | return; |
5594 | } | |
4db098f4 | 5595 | if (--(SvREFCNT(sv)) > 0) |
8990e307 | 5596 | return; |
8c4d3c90 NC |
5597 | Perl_sv_free2(aTHX_ sv); |
5598 | } | |
5599 | ||
5600 | void | |
5601 | Perl_sv_free2(pTHX_ SV *sv) | |
5602 | { | |
463ee0b2 LW |
5603 | #ifdef DEBUGGING |
5604 | if (SvTEMP(sv)) { | |
0453d815 | 5605 | if (ckWARN_d(WARN_DEBUGGING)) |
9014280d | 5606 | Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), |
1d7c1841 GS |
5607 | "Attempt to free temp prematurely: SV 0x%"UVxf, |
5608 | PTR2UV(sv)); | |
79072805 | 5609 | return; |
79072805 | 5610 | } |
463ee0b2 | 5611 | #endif |
d689ffdd JP |
5612 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
5613 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
5614 | SvREFCNT(sv) = (~(U32)0)/2; | |
5615 | return; | |
5616 | } | |
79072805 | 5617 | sv_clear(sv); |
477f5d66 CS |
5618 | if (! SvREFCNT(sv)) |
5619 | del_SV(sv); | |
79072805 LW |
5620 | } |
5621 | ||
954c1994 GS |
5622 | /* |
5623 | =for apidoc sv_len | |
5624 | ||
645c22ef DM |
5625 | Returns the length of the string in the SV. Handles magic and type |
5626 | coercion. See also C<SvCUR>, which gives raw access to the xpv_cur slot. | |
954c1994 GS |
5627 | |
5628 | =cut | |
5629 | */ | |
5630 | ||
79072805 | 5631 | STRLEN |
864dbfa3 | 5632 | Perl_sv_len(pTHX_ register SV *sv) |
79072805 | 5633 | { |
463ee0b2 | 5634 | STRLEN len; |
79072805 LW |
5635 | |
5636 | if (!sv) | |
5637 | return 0; | |
5638 | ||
8990e307 | 5639 | if (SvGMAGICAL(sv)) |
565764a8 | 5640 | len = mg_length(sv); |
8990e307 | 5641 | else |
497b47a8 | 5642 | (void)SvPV(sv, len); |
463ee0b2 | 5643 | return len; |
79072805 LW |
5644 | } |
5645 | ||
c461cf8f JH |
5646 | /* |
5647 | =for apidoc sv_len_utf8 | |
5648 | ||
5649 | Returns the number of characters in the string in an SV, counting wide | |
645c22ef | 5650 | UTF8 bytes as a single character. Handles magic and type coercion. |
c461cf8f JH |
5651 | |
5652 | =cut | |
5653 | */ | |
5654 | ||
7e8c5dac HS |
5655 | /* |
5656 | * The length is cached in PERL_UTF8_magic, in the mg_len field. Also the | |
5657 | * mg_ptr is used, by sv_pos_u2b(), see the comments of S_utf8_mg_pos_init(). | |
5658 | * (Note that the mg_len is not the length of the mg_ptr field.) | |
5659 | * | |
5660 | */ | |
5661 | ||
a0ed51b3 | 5662 | STRLEN |
864dbfa3 | 5663 | Perl_sv_len_utf8(pTHX_ register SV *sv) |
a0ed51b3 | 5664 | { |
a0ed51b3 LW |
5665 | if (!sv) |
5666 | return 0; | |
5667 | ||
a0ed51b3 | 5668 | if (SvGMAGICAL(sv)) |
b76347f2 | 5669 | return mg_length(sv); |
a0ed51b3 | 5670 | else |
b76347f2 | 5671 | { |
7e8c5dac | 5672 | STRLEN len, ulen; |
b76347f2 | 5673 | U8 *s = (U8*)SvPV(sv, len); |
7e8c5dac HS |
5674 | MAGIC *mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_utf8) : 0; |
5675 | ||
e23c8137 | 5676 | if (mg && mg->mg_len != -1 && (mg->mg_len > 0 || len == 0)) { |
7e8c5dac | 5677 | ulen = mg->mg_len; |
e23c8137 JH |
5678 | #ifdef PERL_UTF8_CACHE_ASSERT |
5679 | assert(ulen == Perl_utf8_length(aTHX_ s, s + len)); | |
5680 | #endif | |
5681 | } | |
7e8c5dac HS |
5682 | else { |
5683 | ulen = Perl_utf8_length(aTHX_ s, s + len); | |
5684 | if (!mg && !SvREADONLY(sv)) { | |
5685 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
5686 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
5687 | assert(mg); | |
5688 | } | |
5689 | if (mg) | |
5690 | mg->mg_len = ulen; | |
5691 | } | |
5692 | return ulen; | |
5693 | } | |
5694 | } | |
5695 | ||
5696 | /* S_utf8_mg_pos_init() is used to initialize the mg_ptr field of | |
5697 | * a PERL_UTF8_magic. The mg_ptr is used to store the mapping | |
5698 | * between UTF-8 and byte offsets. There are two (substr offset and substr | |
5699 | * length, the i offset, PERL_MAGIC_UTF8_CACHESIZE) times two (UTF-8 offset | |
5700 | * and byte offset) cache positions. | |
5701 | * | |
5702 | * The mg_len field is used by sv_len_utf8(), see its comments. | |
5703 | * Note that the mg_len is not the length of the mg_ptr field. | |
5704 | * | |
5705 | */ | |
5706 | STATIC bool | |
6e551876 | 5707 | S_utf8_mg_pos_init(pTHX_ SV *sv, MAGIC **mgp, STRLEN **cachep, I32 i, I32 *offsetp, U8 *s, U8 *start) |
7e8c5dac HS |
5708 | { |
5709 | bool found = FALSE; | |
5710 | ||
5711 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
5712 | if (!*mgp) { | |
5713 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
5714 | *mgp = mg_find(sv, PERL_MAGIC_utf8); | |
5715 | } | |
5716 | assert(*mgp); | |
b76347f2 | 5717 | |
7e8c5dac HS |
5718 | if ((*mgp)->mg_ptr) |
5719 | *cachep = (STRLEN *) (*mgp)->mg_ptr; | |
5720 | else { | |
5721 | Newz(0, *cachep, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); | |
5722 | (*mgp)->mg_ptr = (char *) *cachep; | |
5723 | } | |
5724 | assert(*cachep); | |
5725 | ||
5726 | (*cachep)[i] = *offsetp; | |
5727 | (*cachep)[i+1] = s - start; | |
5728 | found = TRUE; | |
a0ed51b3 | 5729 | } |
7e8c5dac HS |
5730 | |
5731 | return found; | |
a0ed51b3 LW |
5732 | } |
5733 | ||
645c22ef | 5734 | /* |
7e8c5dac HS |
5735 | * S_utf8_mg_pos() is used to query and update mg_ptr field of |
5736 | * a PERL_UTF8_magic. The mg_ptr is used to store the mapping | |
5737 | * between UTF-8 and byte offsets. See also the comments of | |
5738 | * S_utf8_mg_pos_init(). | |
5739 | * | |
5740 | */ | |
5741 | STATIC bool | |
6e551876 | 5742 | 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 |
5743 | { |
5744 | bool found = FALSE; | |
5745 | ||
5746 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
5747 | if (!*mgp) | |
5748 | *mgp = mg_find(sv, PERL_MAGIC_utf8); | |
5749 | if (*mgp && (*mgp)->mg_ptr) { | |
5750 | *cachep = (STRLEN *) (*mgp)->mg_ptr; | |
e23c8137 | 5751 | ASSERT_UTF8_CACHE(*cachep); |
667208dd | 5752 | if ((*cachep)[i] == (STRLEN)uoff) /* An exact match. */ |
e23c8137 | 5753 | found = TRUE; |
7e8c5dac HS |
5754 | else { /* We will skip to the right spot. */ |
5755 | STRLEN forw = 0; | |
5756 | STRLEN backw = 0; | |
5757 | U8* p = NULL; | |
5758 | ||
5759 | /* The assumption is that going backward is half | |
5760 | * the speed of going forward (that's where the | |
5761 | * 2 * backw in the below comes from). (The real | |
5762 | * figure of course depends on the UTF-8 data.) */ | |
5763 | ||
667208dd | 5764 | if ((*cachep)[i] > (STRLEN)uoff) { |
7e8c5dac | 5765 | forw = uoff; |
667208dd | 5766 | backw = (*cachep)[i] - (STRLEN)uoff; |
7e8c5dac HS |
5767 | |
5768 | if (forw < 2 * backw) | |
5769 | p = start; | |
5770 | else | |
5771 | p = start + (*cachep)[i+1]; | |
5772 | } | |
5773 | /* Try this only for the substr offset (i == 0), | |
5774 | * not for the substr length (i == 2). */ | |
5775 | else if (i == 0) { /* (*cachep)[i] < uoff */ | |
5776 | STRLEN ulen = sv_len_utf8(sv); | |
5777 | ||
667208dd JH |
5778 | if ((STRLEN)uoff < ulen) { |
5779 | forw = (STRLEN)uoff - (*cachep)[i]; | |
5780 | backw = ulen - (STRLEN)uoff; | |
7e8c5dac HS |
5781 | |
5782 | if (forw < 2 * backw) | |
5783 | p = start + (*cachep)[i+1]; | |
5784 | else | |
5785 | p = send; | |
5786 | } | |
5787 | ||
5788 | /* If the string is not long enough for uoff, | |
5789 | * we could extend it, but not at this low a level. */ | |
5790 | } | |
5791 | ||
5792 | if (p) { | |
5793 | if (forw < 2 * backw) { | |
5794 | while (forw--) | |
5795 | p += UTF8SKIP(p); | |
5796 | } | |
5797 | else { | |
5798 | while (backw--) { | |
5799 | p--; | |
5800 | while (UTF8_IS_CONTINUATION(*p)) | |
5801 | p--; | |
5802 | } | |
5803 | } | |
5804 | ||
5805 | /* Update the cache. */ | |
667208dd | 5806 | (*cachep)[i] = (STRLEN)uoff; |
7e8c5dac HS |
5807 | (*cachep)[i+1] = p - start; |
5808 | ||
5809 | found = TRUE; | |
5810 | } | |
5811 | } | |
5812 | if (found) { /* Setup the return values. */ | |
5813 | *offsetp = (*cachep)[i+1]; | |
5814 | *sp = start + *offsetp; | |
5815 | if (*sp >= send) { | |
5816 | *sp = send; | |
5817 | *offsetp = send - start; | |
5818 | } | |
5819 | else if (*sp < start) { | |
5820 | *sp = start; | |
5821 | *offsetp = 0; | |
5822 | } | |
5823 | } | |
5824 | } | |
e23c8137 JH |
5825 | #ifdef PERL_UTF8_CACHE_ASSERT |
5826 | if (found) { | |
5827 | U8 *s = start; | |
5828 | I32 n = uoff; | |
5829 | ||
5830 | while (n-- && s < send) | |
5831 | s += UTF8SKIP(s); | |
5832 | ||
5833 | if (i == 0) { | |
5834 | assert(*offsetp == s - start); | |
5835 | assert((*cachep)[0] == (STRLEN)uoff); | |
5836 | assert((*cachep)[1] == *offsetp); | |
5837 | } | |
5838 | ASSERT_UTF8_CACHE(*cachep); | |
5839 | } | |
5840 | #endif | |
7e8c5dac | 5841 | } |
e23c8137 | 5842 | |
7e8c5dac HS |
5843 | return found; |
5844 | } | |
5845 | ||
5846 | /* | |
645c22ef DM |
5847 | =for apidoc sv_pos_u2b |
5848 | ||
5849 | Converts the value pointed to by offsetp from a count of UTF8 chars from | |
5850 | the start of the string, to a count of the equivalent number of bytes; if | |
5851 | lenp is non-zero, it does the same to lenp, but this time starting from | |
5852 | the offset, rather than from the start of the string. Handles magic and | |
5853 | type coercion. | |
5854 | ||
5855 | =cut | |
5856 | */ | |
5857 | ||
7e8c5dac HS |
5858 | /* |
5859 | * sv_pos_u2b() uses, like sv_pos_b2u(), the mg_ptr of the potential | |
5860 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
5861 | * byte offsets. See also the comments of S_utf8_mg_pos(). | |
5862 | * | |
5863 | */ | |
5864 | ||
a0ed51b3 | 5865 | void |
864dbfa3 | 5866 | Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp) |
a0ed51b3 | 5867 | { |
dfe13c55 GS |
5868 | U8 *start; |
5869 | U8 *s; | |
a0ed51b3 | 5870 | STRLEN len; |
7e8c5dac HS |
5871 | STRLEN *cache = 0; |
5872 | STRLEN boffset = 0; | |
a0ed51b3 LW |
5873 | |
5874 | if (!sv) | |
5875 | return; | |
5876 | ||
dfe13c55 | 5877 | start = s = (U8*)SvPV(sv, len); |
7e8c5dac HS |
5878 | if (len) { |
5879 | I32 uoffset = *offsetp; | |
5880 | U8 *send = s + len; | |
5881 | MAGIC *mg = 0; | |
5882 | bool found = FALSE; | |
5883 | ||
bdf77a2a | 5884 | if (utf8_mg_pos(sv, &mg, &cache, 0, offsetp, *offsetp, &s, start, send)) |
7e8c5dac HS |
5885 | found = TRUE; |
5886 | if (!found && uoffset > 0) { | |
5887 | while (s < send && uoffset--) | |
5888 | s += UTF8SKIP(s); | |
5889 | if (s >= send) | |
5890 | s = send; | |
bdf77a2a | 5891 | if (utf8_mg_pos_init(sv, &mg, &cache, 0, offsetp, s, start)) |
7e8c5dac HS |
5892 | boffset = cache[1]; |
5893 | *offsetp = s - start; | |
5894 | } | |
5895 | if (lenp) { | |
5896 | found = FALSE; | |
5897 | start = s; | |
bdf77a2a | 5898 | if (utf8_mg_pos(sv, &mg, &cache, 2, lenp, *lenp + *offsetp, &s, start, send)) { |
7e8c5dac HS |
5899 | *lenp -= boffset; |
5900 | found = TRUE; | |
5901 | } | |
5902 | if (!found && *lenp > 0) { | |
5903 | I32 ulen = *lenp; | |
5904 | if (ulen > 0) | |
5905 | while (s < send && ulen--) | |
5906 | s += UTF8SKIP(s); | |
5907 | if (s >= send) | |
5908 | s = send; | |
bdf77a2a | 5909 | if (utf8_mg_pos_init(sv, &mg, &cache, 2, lenp, s, start)) |
7e8c5dac HS |
5910 | cache[2] += *offsetp; |
5911 | } | |
5912 | *lenp = s - start; | |
5913 | } | |
e23c8137 | 5914 | ASSERT_UTF8_CACHE(cache); |
7e8c5dac HS |
5915 | } |
5916 | else { | |
5917 | *offsetp = 0; | |
5918 | if (lenp) | |
5919 | *lenp = 0; | |
a0ed51b3 | 5920 | } |
e23c8137 | 5921 | |
a0ed51b3 LW |
5922 | return; |
5923 | } | |
5924 | ||
645c22ef DM |
5925 | /* |
5926 | =for apidoc sv_pos_b2u | |
5927 | ||
5928 | Converts the value pointed to by offsetp from a count of bytes from the | |
5929 | start of the string, to a count of the equivalent number of UTF8 chars. | |
5930 | Handles magic and type coercion. | |
5931 | ||
5932 | =cut | |
5933 | */ | |
5934 | ||
7e8c5dac HS |
5935 | /* |
5936 | * sv_pos_b2u() uses, like sv_pos_u2b(), the mg_ptr of the potential | |
5937 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
5938 | * byte offsets. See also the comments of S_utf8_mg_pos(). | |
5939 | * | |
5940 | */ | |
5941 | ||
a0ed51b3 | 5942 | void |
7e8c5dac | 5943 | Perl_sv_pos_b2u(pTHX_ register SV* sv, I32* offsetp) |
a0ed51b3 | 5944 | { |
7e8c5dac | 5945 | U8* s; |
a0ed51b3 LW |
5946 | STRLEN len; |
5947 | ||
5948 | if (!sv) | |
5949 | return; | |
5950 | ||
dfe13c55 | 5951 | s = (U8*)SvPV(sv, len); |
eb160463 | 5952 | if ((I32)len < *offsetp) |
a0dbb045 | 5953 | Perl_croak(aTHX_ "panic: sv_pos_b2u: bad byte offset"); |
7e8c5dac HS |
5954 | else { |
5955 | U8* send = s + *offsetp; | |
5956 | MAGIC* mg = NULL; | |
5957 | STRLEN *cache = NULL; | |
5958 | ||
5959 | len = 0; | |
5960 | ||
5961 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
5962 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
5963 | if (mg && mg->mg_ptr) { | |
5964 | cache = (STRLEN *) mg->mg_ptr; | |
c5661c80 | 5965 | if (cache[1] == (STRLEN)*offsetp) { |
7e8c5dac HS |
5966 | /* An exact match. */ |
5967 | *offsetp = cache[0]; | |
5968 | ||
5969 | return; | |
5970 | } | |
c5661c80 | 5971 | else if (cache[1] < (STRLEN)*offsetp) { |
7e8c5dac HS |
5972 | /* We already know part of the way. */ |
5973 | len = cache[0]; | |
5974 | s += cache[1]; | |
5975 | /* Let the below loop do the rest. */ | |
5976 | } | |
5977 | else { /* cache[1] > *offsetp */ | |
5978 | /* We already know all of the way, now we may | |
5979 | * be able to walk back. The same assumption | |
5980 | * is made as in S_utf8_mg_pos(), namely that | |
5981 | * walking backward is twice slower than | |
5982 | * walking forward. */ | |
5983 | STRLEN forw = *offsetp; | |
5984 | STRLEN backw = cache[1] - *offsetp; | |
5985 | ||
5986 | if (!(forw < 2 * backw)) { | |
5987 | U8 *p = s + cache[1]; | |
5988 | STRLEN ubackw = 0; | |
5989 | ||
a5b510f2 AE |
5990 | cache[1] -= backw; |
5991 | ||
7e8c5dac HS |
5992 | while (backw--) { |
5993 | p--; | |
0aeb64d0 | 5994 | while (UTF8_IS_CONTINUATION(*p)) { |
7e8c5dac | 5995 | p--; |
0aeb64d0 JH |
5996 | backw--; |
5997 | } | |
7e8c5dac HS |
5998 | ubackw++; |
5999 | } | |
6000 | ||
6001 | cache[0] -= ubackw; | |
0aeb64d0 JH |
6002 | *offsetp = cache[0]; |
6003 | return; | |
7e8c5dac HS |
6004 | } |
6005 | } | |
6006 | } | |
e23c8137 | 6007 | ASSERT_UTF8_CACHE(cache); |
a0dbb045 | 6008 | } |
7e8c5dac HS |
6009 | |
6010 | while (s < send) { | |
6011 | STRLEN n = 1; | |
6012 | ||
6013 | /* Call utf8n_to_uvchr() to validate the sequence | |
6014 | * (unless a simple non-UTF character) */ | |
6015 | if (!UTF8_IS_INVARIANT(*s)) | |
6016 | utf8n_to_uvchr(s, UTF8SKIP(s), &n, 0); | |
6017 | if (n > 0) { | |
6018 | s += n; | |
6019 | len++; | |
6020 | } | |
6021 | else | |
6022 | break; | |
6023 | } | |
6024 | ||
6025 | if (!SvREADONLY(sv)) { | |
6026 | if (!mg) { | |
6027 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
6028 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
6029 | } | |
6030 | assert(mg); | |
6031 | ||
6032 | if (!mg->mg_ptr) { | |
6033 | Newz(0, cache, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); | |
6034 | mg->mg_ptr = (char *) cache; | |
6035 | } | |
6036 | assert(cache); | |
6037 | ||
6038 | cache[0] = len; | |
6039 | cache[1] = *offsetp; | |
6040 | } | |
6041 | ||
6042 | *offsetp = len; | |
a0ed51b3 | 6043 | } |
a0ed51b3 LW |
6044 | return; |
6045 | } | |
6046 | ||
954c1994 GS |
6047 | /* |
6048 | =for apidoc sv_eq | |
6049 | ||
6050 | Returns a boolean indicating whether the strings in the two SVs are | |
645c22ef DM |
6051 | identical. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
6052 | coerce its args to strings if necessary. | |
954c1994 GS |
6053 | |
6054 | =cut | |
6055 | */ | |
6056 | ||
79072805 | 6057 | I32 |
e01b9e88 | 6058 | Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2) |
79072805 LW |
6059 | { |
6060 | char *pv1; | |
463ee0b2 | 6061 | STRLEN cur1; |
79072805 | 6062 | char *pv2; |
463ee0b2 | 6063 | STRLEN cur2; |
e01b9e88 | 6064 | I32 eq = 0; |
553e1bcc AT |
6065 | char *tpv = Nullch; |
6066 | SV* svrecode = Nullsv; | |
79072805 | 6067 | |
e01b9e88 | 6068 | if (!sv1) { |
79072805 LW |
6069 | pv1 = ""; |
6070 | cur1 = 0; | |
6071 | } | |
463ee0b2 | 6072 | else |
e01b9e88 | 6073 | pv1 = SvPV(sv1, cur1); |
79072805 | 6074 | |
e01b9e88 SC |
6075 | if (!sv2){ |
6076 | pv2 = ""; | |
6077 | cur2 = 0; | |
92d29cee | 6078 | } |
e01b9e88 SC |
6079 | else |
6080 | pv2 = SvPV(sv2, cur2); | |
79072805 | 6081 | |
cf48d248 | 6082 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
6083 | /* Differing utf8ness. |
6084 | * Do not UTF8size the comparands as a side-effect. */ | |
6085 | if (PL_encoding) { | |
6086 | if (SvUTF8(sv1)) { | |
553e1bcc AT |
6087 | svrecode = newSVpvn(pv2, cur2); |
6088 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6089 | pv2 = SvPV(svrecode, cur2); | |
799ef3cb JH |
6090 | } |
6091 | else { | |
553e1bcc AT |
6092 | svrecode = newSVpvn(pv1, cur1); |
6093 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6094 | pv1 = SvPV(svrecode, cur1); | |
799ef3cb JH |
6095 | } |
6096 | /* Now both are in UTF-8. */ | |
6097 | if (cur1 != cur2) | |
6098 | return FALSE; | |
6099 | } | |
6100 | else { | |
6101 | bool is_utf8 = TRUE; | |
6102 | ||
6103 | if (SvUTF8(sv1)) { | |
6104 | /* sv1 is the UTF-8 one, | |
6105 | * if is equal it must be downgrade-able */ | |
6106 | char *pv = (char*)bytes_from_utf8((U8*)pv1, | |
6107 | &cur1, &is_utf8); | |
6108 | if (pv != pv1) | |
553e1bcc | 6109 | pv1 = tpv = pv; |
799ef3cb JH |
6110 | } |
6111 | else { | |
6112 | /* sv2 is the UTF-8 one, | |
6113 | * if is equal it must be downgrade-able */ | |
6114 | char *pv = (char *)bytes_from_utf8((U8*)pv2, | |
6115 | &cur2, &is_utf8); | |
6116 | if (pv != pv2) | |
553e1bcc | 6117 | pv2 = tpv = pv; |
799ef3cb JH |
6118 | } |
6119 | if (is_utf8) { | |
6120 | /* Downgrade not possible - cannot be eq */ | |
6121 | return FALSE; | |
6122 | } | |
6123 | } | |
cf48d248 JH |
6124 | } |
6125 | ||
6126 | if (cur1 == cur2) | |
765f542d | 6127 | eq = (pv1 == pv2) || memEQ(pv1, pv2, cur1); |
e01b9e88 | 6128 | |
553e1bcc AT |
6129 | if (svrecode) |
6130 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6131 | |
553e1bcc AT |
6132 | if (tpv) |
6133 | Safefree(tpv); | |
cf48d248 | 6134 | |
e01b9e88 | 6135 | return eq; |
79072805 LW |
6136 | } |
6137 | ||
954c1994 GS |
6138 | /* |
6139 | =for apidoc sv_cmp | |
6140 | ||
6141 | Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the | |
6142 | string in C<sv1> is less than, equal to, or greater than the string in | |
645c22ef DM |
6143 | C<sv2>. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
6144 | coerce its args to strings if necessary. See also C<sv_cmp_locale>. | |
954c1994 GS |
6145 | |
6146 | =cut | |
6147 | */ | |
6148 | ||
79072805 | 6149 | I32 |
e01b9e88 | 6150 | Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2) |
79072805 | 6151 | { |
560a288e | 6152 | STRLEN cur1, cur2; |
553e1bcc | 6153 | char *pv1, *pv2, *tpv = Nullch; |
cf48d248 | 6154 | I32 cmp; |
553e1bcc | 6155 | SV *svrecode = Nullsv; |
560a288e | 6156 | |
e01b9e88 SC |
6157 | if (!sv1) { |
6158 | pv1 = ""; | |
560a288e GS |
6159 | cur1 = 0; |
6160 | } | |
e01b9e88 SC |
6161 | else |
6162 | pv1 = SvPV(sv1, cur1); | |
560a288e | 6163 | |
553e1bcc | 6164 | if (!sv2) { |
e01b9e88 | 6165 | pv2 = ""; |
560a288e GS |
6166 | cur2 = 0; |
6167 | } | |
e01b9e88 SC |
6168 | else |
6169 | pv2 = SvPV(sv2, cur2); | |
79072805 | 6170 | |
cf48d248 | 6171 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
6172 | /* Differing utf8ness. |
6173 | * Do not UTF8size the comparands as a side-effect. */ | |
cf48d248 | 6174 | if (SvUTF8(sv1)) { |
799ef3cb | 6175 | if (PL_encoding) { |
553e1bcc AT |
6176 | svrecode = newSVpvn(pv2, cur2); |
6177 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6178 | pv2 = SvPV(svrecode, cur2); | |
799ef3cb JH |
6179 | } |
6180 | else { | |
553e1bcc | 6181 | pv2 = tpv = (char*)bytes_to_utf8((U8*)pv2, &cur2); |
799ef3cb | 6182 | } |
cf48d248 JH |
6183 | } |
6184 | else { | |
799ef3cb | 6185 | if (PL_encoding) { |
553e1bcc AT |
6186 | svrecode = newSVpvn(pv1, cur1); |
6187 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6188 | pv1 = SvPV(svrecode, cur1); | |
799ef3cb JH |
6189 | } |
6190 | else { | |
553e1bcc | 6191 | pv1 = tpv = (char*)bytes_to_utf8((U8*)pv1, &cur1); |
799ef3cb | 6192 | } |
cf48d248 JH |
6193 | } |
6194 | } | |
6195 | ||
e01b9e88 | 6196 | if (!cur1) { |
cf48d248 | 6197 | cmp = cur2 ? -1 : 0; |
e01b9e88 | 6198 | } else if (!cur2) { |
cf48d248 JH |
6199 | cmp = 1; |
6200 | } else { | |
6201 | I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2); | |
e01b9e88 SC |
6202 | |
6203 | if (retval) { | |
cf48d248 | 6204 | cmp = retval < 0 ? -1 : 1; |
e01b9e88 | 6205 | } else if (cur1 == cur2) { |
cf48d248 JH |
6206 | cmp = 0; |
6207 | } else { | |
6208 | cmp = cur1 < cur2 ? -1 : 1; | |
e01b9e88 | 6209 | } |
cf48d248 | 6210 | } |
16660edb | 6211 | |
553e1bcc AT |
6212 | if (svrecode) |
6213 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6214 | |
553e1bcc AT |
6215 | if (tpv) |
6216 | Safefree(tpv); | |
cf48d248 JH |
6217 | |
6218 | return cmp; | |
bbce6d69 | 6219 | } |
16660edb | 6220 | |
c461cf8f JH |
6221 | /* |
6222 | =for apidoc sv_cmp_locale | |
6223 | ||
645c22ef DM |
6224 | Compares the strings in two SVs in a locale-aware manner. Is UTF-8 and |
6225 | 'use bytes' aware, handles get magic, and will coerce its args to strings | |
6226 | if necessary. See also C<sv_cmp_locale>. See also C<sv_cmp>. | |
c461cf8f JH |
6227 | |
6228 | =cut | |
6229 | */ | |
6230 | ||
bbce6d69 | 6231 | I32 |
864dbfa3 | 6232 | Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2) |
bbce6d69 | 6233 | { |
36477c24 | 6234 | #ifdef USE_LOCALE_COLLATE |
16660edb | 6235 | |
bbce6d69 | 6236 | char *pv1, *pv2; |
6237 | STRLEN len1, len2; | |
6238 | I32 retval; | |
16660edb | 6239 | |
3280af22 | 6240 | if (PL_collation_standard) |
bbce6d69 | 6241 | goto raw_compare; |
16660edb | 6242 | |
bbce6d69 | 6243 | len1 = 0; |
8ac85365 | 6244 | pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL; |
bbce6d69 | 6245 | len2 = 0; |
8ac85365 | 6246 | pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL; |
16660edb | 6247 | |
bbce6d69 | 6248 | if (!pv1 || !len1) { |
6249 | if (pv2 && len2) | |
6250 | return -1; | |
6251 | else | |
6252 | goto raw_compare; | |
6253 | } | |
6254 | else { | |
6255 | if (!pv2 || !len2) | |
6256 | return 1; | |
6257 | } | |
16660edb | 6258 | |
bbce6d69 | 6259 | retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2); |
16660edb | 6260 | |
bbce6d69 | 6261 | if (retval) |
16660edb | 6262 | return retval < 0 ? -1 : 1; |
6263 | ||
bbce6d69 | 6264 | /* |
6265 | * When the result of collation is equality, that doesn't mean | |
6266 | * that there are no differences -- some locales exclude some | |
6267 | * characters from consideration. So to avoid false equalities, | |
6268 | * we use the raw string as a tiebreaker. | |
6269 | */ | |
16660edb | 6270 | |
bbce6d69 | 6271 | raw_compare: |
6272 | /* FALL THROUGH */ | |
16660edb | 6273 | |
36477c24 | 6274 | #endif /* USE_LOCALE_COLLATE */ |
16660edb | 6275 | |
bbce6d69 | 6276 | return sv_cmp(sv1, sv2); |
6277 | } | |
79072805 | 6278 | |
645c22ef | 6279 | |
36477c24 | 6280 | #ifdef USE_LOCALE_COLLATE |
645c22ef | 6281 | |
7a4c00b4 | 6282 | /* |
645c22ef DM |
6283 | =for apidoc sv_collxfrm |
6284 | ||
6285 | Add Collate Transform magic to an SV if it doesn't already have it. | |
6286 | ||
6287 | Any scalar variable may carry PERL_MAGIC_collxfrm magic that contains the | |
6288 | scalar data of the variable, but transformed to such a format that a normal | |
6289 | memory comparison can be used to compare the data according to the locale | |
6290 | settings. | |
6291 | ||
6292 | =cut | |
6293 | */ | |
6294 | ||
bbce6d69 | 6295 | char * |
864dbfa3 | 6296 | Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp) |
bbce6d69 | 6297 | { |
7a4c00b4 | 6298 | MAGIC *mg; |
16660edb | 6299 | |
14befaf4 | 6300 | mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_collxfrm) : (MAGIC *) NULL; |
3280af22 | 6301 | if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) { |
bbce6d69 | 6302 | char *s, *xf; |
6303 | STRLEN len, xlen; | |
6304 | ||
7a4c00b4 | 6305 | if (mg) |
6306 | Safefree(mg->mg_ptr); | |
bbce6d69 | 6307 | s = SvPV(sv, len); |
6308 | if ((xf = mem_collxfrm(s, len, &xlen))) { | |
ff0cee69 | 6309 | if (SvREADONLY(sv)) { |
6310 | SAVEFREEPV(xf); | |
6311 | *nxp = xlen; | |
3280af22 | 6312 | return xf + sizeof(PL_collation_ix); |
ff0cee69 | 6313 | } |
7a4c00b4 | 6314 | if (! mg) { |
14befaf4 DM |
6315 | sv_magic(sv, 0, PERL_MAGIC_collxfrm, 0, 0); |
6316 | mg = mg_find(sv, PERL_MAGIC_collxfrm); | |
7a4c00b4 | 6317 | assert(mg); |
bbce6d69 | 6318 | } |
7a4c00b4 | 6319 | mg->mg_ptr = xf; |
565764a8 | 6320 | mg->mg_len = xlen; |
7a4c00b4 | 6321 | } |
6322 | else { | |
ff0cee69 | 6323 | if (mg) { |
6324 | mg->mg_ptr = NULL; | |
565764a8 | 6325 | mg->mg_len = -1; |
ff0cee69 | 6326 | } |
bbce6d69 | 6327 | } |
6328 | } | |
7a4c00b4 | 6329 | if (mg && mg->mg_ptr) { |
565764a8 | 6330 | *nxp = mg->mg_len; |
3280af22 | 6331 | return mg->mg_ptr + sizeof(PL_collation_ix); |
bbce6d69 | 6332 | } |
6333 | else { | |
6334 | *nxp = 0; | |
6335 | return NULL; | |
16660edb | 6336 | } |
79072805 LW |
6337 | } |
6338 | ||
36477c24 | 6339 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 6340 | |
c461cf8f JH |
6341 | /* |
6342 | =for apidoc sv_gets | |
6343 | ||
6344 | Get a line from the filehandle and store it into the SV, optionally | |
6345 | appending to the currently-stored string. | |
6346 | ||
6347 | =cut | |
6348 | */ | |
6349 | ||
79072805 | 6350 | char * |
864dbfa3 | 6351 | Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append) |
79072805 | 6352 | { |
c07a80fd | 6353 | char *rsptr; |
6354 | STRLEN rslen; | |
6355 | register STDCHAR rslast; | |
6356 | register STDCHAR *bp; | |
6357 | register I32 cnt; | |
9c5ffd7c | 6358 | I32 i = 0; |
8bfdd7d9 | 6359 | I32 rspara = 0; |
e311fd51 | 6360 | I32 recsize; |
c07a80fd | 6361 | |
bc44a8a2 NC |
6362 | if (SvTHINKFIRST(sv)) |
6363 | sv_force_normal_flags(sv, append ? 0 : SV_COW_DROP_PV); | |
765f542d NC |
6364 | /* XXX. If you make this PVIV, then copy on write can copy scalars read |
6365 | from <>. | |
6366 | However, perlbench says it's slower, because the existing swipe code | |
6367 | is faster than copy on write. | |
6368 | Swings and roundabouts. */ | |
6fc92669 | 6369 | (void)SvUPGRADE(sv, SVt_PV); |
99491443 | 6370 | |
ff68c719 | 6371 | SvSCREAM_off(sv); |
efd8b2ba AE |
6372 | |
6373 | if (append) { | |
6374 | if (PerlIO_isutf8(fp)) { | |
6375 | if (!SvUTF8(sv)) { | |
6376 | sv_utf8_upgrade_nomg(sv); | |
6377 | sv_pos_u2b(sv,&append,0); | |
6378 | } | |
6379 | } else if (SvUTF8(sv)) { | |
6380 | SV *tsv = NEWSV(0,0); | |
6381 | sv_gets(tsv, fp, 0); | |
6382 | sv_utf8_upgrade_nomg(tsv); | |
6383 | SvCUR_set(sv,append); | |
6384 | sv_catsv(sv,tsv); | |
6385 | sv_free(tsv); | |
6386 | goto return_string_or_null; | |
6387 | } | |
6388 | } | |
6389 | ||
6390 | SvPOK_only(sv); | |
6391 | if (PerlIO_isutf8(fp)) | |
6392 | SvUTF8_on(sv); | |
c07a80fd | 6393 | |
8bfdd7d9 HS |
6394 | if (PL_curcop == &PL_compiling) { |
6395 | /* we always read code in line mode */ | |
6396 | rsptr = "\n"; | |
6397 | rslen = 1; | |
6398 | } | |
6399 | else if (RsSNARF(PL_rs)) { | |
e468d35b NIS |
6400 | /* If it is a regular disk file use size from stat() as estimate |
6401 | of amount we are going to read - may result in malloc-ing | |
6402 | more memory than we realy need if layers bellow reduce | |
6403 | size we read (e.g. CRLF or a gzip layer) | |
6404 | */ | |
e311fd51 | 6405 | Stat_t st; |
e468d35b NIS |
6406 | if (!PerlLIO_fstat(PerlIO_fileno(fp), &st) && S_ISREG(st.st_mode)) { |
6407 | Off_t offset = PerlIO_tell(fp); | |
58f1856e | 6408 | if (offset != (Off_t) -1 && st.st_size + append > offset) { |
e468d35b NIS |
6409 | (void) SvGROW(sv, (STRLEN)((st.st_size - offset) + append + 1)); |
6410 | } | |
6411 | } | |
c07a80fd | 6412 | rsptr = NULL; |
6413 | rslen = 0; | |
6414 | } | |
3280af22 | 6415 | else if (RsRECORD(PL_rs)) { |
e311fd51 | 6416 | I32 bytesread; |
5b2b9c68 HM |
6417 | char *buffer; |
6418 | ||
6419 | /* Grab the size of the record we're getting */ | |
3280af22 | 6420 | recsize = SvIV(SvRV(PL_rs)); |
e311fd51 | 6421 | buffer = SvGROW(sv, (STRLEN)(recsize + append + 1)) + append; |
5b2b9c68 HM |
6422 | /* Go yank in */ |
6423 | #ifdef VMS | |
6424 | /* VMS wants read instead of fread, because fread doesn't respect */ | |
6425 | /* RMS record boundaries. This is not necessarily a good thing to be */ | |
e468d35b NIS |
6426 | /* doing, but we've got no other real choice - except avoid stdio |
6427 | as implementation - perhaps write a :vms layer ? | |
6428 | */ | |
5b2b9c68 HM |
6429 | bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize); |
6430 | #else | |
6431 | bytesread = PerlIO_read(fp, buffer, recsize); | |
6432 | #endif | |
27e6ca2d AE |
6433 | if (bytesread < 0) |
6434 | bytesread = 0; | |
e311fd51 | 6435 | SvCUR_set(sv, bytesread += append); |
e670df4e | 6436 | buffer[bytesread] = '\0'; |
efd8b2ba | 6437 | goto return_string_or_null; |
5b2b9c68 | 6438 | } |
3280af22 | 6439 | else if (RsPARA(PL_rs)) { |
c07a80fd | 6440 | rsptr = "\n\n"; |
6441 | rslen = 2; | |
8bfdd7d9 | 6442 | rspara = 1; |
c07a80fd | 6443 | } |
7d59b7e4 NIS |
6444 | else { |
6445 | /* Get $/ i.e. PL_rs into same encoding as stream wants */ | |
6446 | if (PerlIO_isutf8(fp)) { | |
6447 | rsptr = SvPVutf8(PL_rs, rslen); | |
6448 | } | |
6449 | else { | |
6450 | if (SvUTF8(PL_rs)) { | |
6451 | if (!sv_utf8_downgrade(PL_rs, TRUE)) { | |
6452 | Perl_croak(aTHX_ "Wide character in $/"); | |
6453 | } | |
6454 | } | |
6455 | rsptr = SvPV(PL_rs, rslen); | |
6456 | } | |
6457 | } | |
6458 | ||
c07a80fd | 6459 | rslast = rslen ? rsptr[rslen - 1] : '\0'; |
6460 | ||
8bfdd7d9 | 6461 | if (rspara) { /* have to do this both before and after */ |
79072805 | 6462 | do { /* to make sure file boundaries work right */ |
760ac839 | 6463 | if (PerlIO_eof(fp)) |
a0d0e21e | 6464 | return 0; |
760ac839 | 6465 | i = PerlIO_getc(fp); |
79072805 | 6466 | if (i != '\n') { |
a0d0e21e LW |
6467 | if (i == -1) |
6468 | return 0; | |
760ac839 | 6469 | PerlIO_ungetc(fp,i); |
79072805 LW |
6470 | break; |
6471 | } | |
6472 | } while (i != EOF); | |
6473 | } | |
c07a80fd | 6474 | |
760ac839 LW |
6475 | /* See if we know enough about I/O mechanism to cheat it ! */ |
6476 | ||
6477 | /* This used to be #ifdef test - it is made run-time test for ease | |
1c846c1f | 6478 | of abstracting out stdio interface. One call should be cheap |
760ac839 LW |
6479 | enough here - and may even be a macro allowing compile |
6480 | time optimization. | |
6481 | */ | |
6482 | ||
6483 | if (PerlIO_fast_gets(fp)) { | |
6484 | ||
6485 | /* | |
6486 | * We're going to steal some values from the stdio struct | |
6487 | * and put EVERYTHING in the innermost loop into registers. | |
6488 | */ | |
6489 | register STDCHAR *ptr; | |
6490 | STRLEN bpx; | |
6491 | I32 shortbuffered; | |
6492 | ||
16660edb | 6493 | #if defined(VMS) && defined(PERLIO_IS_STDIO) |
6494 | /* An ungetc()d char is handled separately from the regular | |
6495 | * buffer, so we getc() it back out and stuff it in the buffer. | |
6496 | */ | |
6497 | i = PerlIO_getc(fp); | |
6498 | if (i == EOF) return 0; | |
6499 | *(--((*fp)->_ptr)) = (unsigned char) i; | |
6500 | (*fp)->_cnt++; | |
6501 | #endif | |
c07a80fd | 6502 | |
c2960299 | 6503 | /* Here is some breathtakingly efficient cheating */ |
c07a80fd | 6504 | |
a20bf0c3 | 6505 | cnt = PerlIO_get_cnt(fp); /* get count into register */ |
e468d35b NIS |
6506 | /* make sure we have the room */ |
6507 | if ((I32)(SvLEN(sv) - append) <= cnt + 1) { | |
6508 | /* Not room for all of it | |
6509 | if we are looking for a separator and room for some | |
6510 | */ | |
6511 | if (rslen && cnt > 80 && (I32)SvLEN(sv) > append) { | |
6512 | /* just process what we have room for */ | |
79072805 LW |
6513 | shortbuffered = cnt - SvLEN(sv) + append + 1; |
6514 | cnt -= shortbuffered; | |
6515 | } | |
6516 | else { | |
6517 | shortbuffered = 0; | |
bbce6d69 | 6518 | /* remember that cnt can be negative */ |
eb160463 | 6519 | SvGROW(sv, (STRLEN)(append + (cnt <= 0 ? 2 : (cnt + 1)))); |
79072805 LW |
6520 | } |
6521 | } | |
e468d35b | 6522 | else |
79072805 | 6523 | shortbuffered = 0; |
c07a80fd | 6524 | bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */ |
a20bf0c3 | 6525 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); |
16660edb | 6526 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6527 | "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
16660edb | 6528 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
ba7abf9d | 6529 | "Screamer: entering: PerlIO * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6530 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6531 | PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0))); |
79072805 LW |
6532 | for (;;) { |
6533 | screamer: | |
93a17b20 | 6534 | if (cnt > 0) { |
c07a80fd | 6535 | if (rslen) { |
760ac839 LW |
6536 | while (cnt > 0) { /* this | eat */ |
6537 | cnt--; | |
c07a80fd | 6538 | if ((*bp++ = *ptr++) == rslast) /* really | dust */ |
6539 | goto thats_all_folks; /* screams | sed :-) */ | |
6540 | } | |
6541 | } | |
6542 | else { | |
1c846c1f NIS |
6543 | Copy(ptr, bp, cnt, char); /* this | eat */ |
6544 | bp += cnt; /* screams | dust */ | |
c07a80fd | 6545 | ptr += cnt; /* louder | sed :-) */ |
a5f75d66 | 6546 | cnt = 0; |
93a17b20 | 6547 | } |
79072805 LW |
6548 | } |
6549 | ||
748a9306 | 6550 | if (shortbuffered) { /* oh well, must extend */ |
79072805 LW |
6551 | cnt = shortbuffered; |
6552 | shortbuffered = 0; | |
c07a80fd | 6553 | bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */ |
79072805 LW |
6554 | SvCUR_set(sv, bpx); |
6555 | SvGROW(sv, SvLEN(sv) + append + cnt + 2); | |
c07a80fd | 6556 | bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */ |
79072805 LW |
6557 | continue; |
6558 | } | |
6559 | ||
16660edb | 6560 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 GS |
6561 | "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n", |
6562 | PTR2UV(ptr),(long)cnt)); | |
cc00df79 | 6563 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* deregisterize cnt and ptr */ |
ba7abf9d | 6564 | #if 0 |
16660edb | 6565 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6566 | "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6567 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6568 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 6569 | #endif |
1c846c1f | 6570 | /* This used to call 'filbuf' in stdio form, but as that behaves like |
774d564b | 6571 | getc when cnt <= 0 we use PerlIO_getc here to avoid introducing |
6572 | another abstraction. */ | |
760ac839 | 6573 | i = PerlIO_getc(fp); /* get more characters */ |
ba7abf9d | 6574 | #if 0 |
16660edb | 6575 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6576 | "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6577 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6578 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 6579 | #endif |
a20bf0c3 JH |
6580 | cnt = PerlIO_get_cnt(fp); |
6581 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */ | |
16660edb | 6582 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6583 | "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
79072805 | 6584 | |
748a9306 LW |
6585 | if (i == EOF) /* all done for ever? */ |
6586 | goto thats_really_all_folks; | |
6587 | ||
c07a80fd | 6588 | bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */ |
79072805 LW |
6589 | SvCUR_set(sv, bpx); |
6590 | SvGROW(sv, bpx + cnt + 2); | |
c07a80fd | 6591 | bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */ |
6592 | ||
eb160463 | 6593 | *bp++ = (STDCHAR)i; /* store character from PerlIO_getc */ |
79072805 | 6594 | |
c07a80fd | 6595 | if (rslen && (STDCHAR)i == rslast) /* all done for now? */ |
79072805 | 6596 | goto thats_all_folks; |
79072805 LW |
6597 | } |
6598 | ||
6599 | thats_all_folks: | |
eb160463 | 6600 | if ((rslen > 1 && (STRLEN)(bp - (STDCHAR*)SvPVX(sv)) < rslen) || |
36477c24 | 6601 | memNE((char*)bp - rslen, rsptr, rslen)) |
760ac839 | 6602 | goto screamer; /* go back to the fray */ |
79072805 LW |
6603 | thats_really_all_folks: |
6604 | if (shortbuffered) | |
6605 | cnt += shortbuffered; | |
16660edb | 6606 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6607 | "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
cc00df79 | 6608 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* put these back or we're in trouble */ |
16660edb | 6609 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6610 | "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6611 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6612 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
79072805 | 6613 | *bp = '\0'; |
760ac839 | 6614 | SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */ |
16660edb | 6615 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
fb73857a | 6616 | "Screamer: done, len=%ld, string=|%.*s|\n", |
6617 | (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv))); | |
760ac839 LW |
6618 | } |
6619 | else | |
79072805 | 6620 | { |
4d2c4e07 | 6621 | #ifndef EPOC |
760ac839 | 6622 | /*The big, slow, and stupid way */ |
c07a80fd | 6623 | STDCHAR buf[8192]; |
4d2c4e07 OF |
6624 | #else |
6625 | /* Need to work around EPOC SDK features */ | |
6626 | /* On WINS: MS VC5 generates calls to _chkstk, */ | |
6627 | /* if a `large' stack frame is allocated */ | |
6628 | /* gcc on MARM does not generate calls like these */ | |
6629 | STDCHAR buf[1024]; | |
6630 | #endif | |
79072805 | 6631 | |
760ac839 | 6632 | screamer2: |
c07a80fd | 6633 | if (rslen) { |
760ac839 LW |
6634 | register STDCHAR *bpe = buf + sizeof(buf); |
6635 | bp = buf; | |
eb160463 | 6636 | while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = (STDCHAR)i) != rslast && bp < bpe) |
760ac839 LW |
6637 | ; /* keep reading */ |
6638 | cnt = bp - buf; | |
c07a80fd | 6639 | } |
6640 | else { | |
760ac839 | 6641 | cnt = PerlIO_read(fp,(char*)buf, sizeof(buf)); |
16660edb | 6642 | /* Accomodate broken VAXC compiler, which applies U8 cast to |
6643 | * both args of ?: operator, causing EOF to change into 255 | |
6644 | */ | |
37be0adf | 6645 | if (cnt > 0) |
cbe9e203 JH |
6646 | i = (U8)buf[cnt - 1]; |
6647 | else | |
37be0adf | 6648 | i = EOF; |
c07a80fd | 6649 | } |
79072805 | 6650 | |
cbe9e203 JH |
6651 | if (cnt < 0) |
6652 | cnt = 0; /* we do need to re-set the sv even when cnt <= 0 */ | |
6653 | if (append) | |
6654 | sv_catpvn(sv, (char *) buf, cnt); | |
6655 | else | |
6656 | sv_setpvn(sv, (char *) buf, cnt); | |
c07a80fd | 6657 | |
6658 | if (i != EOF && /* joy */ | |
6659 | (!rslen || | |
6660 | SvCUR(sv) < rslen || | |
36477c24 | 6661 | memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen))) |
79072805 LW |
6662 | { |
6663 | append = -1; | |
63e4d877 CS |
6664 | /* |
6665 | * If we're reading from a TTY and we get a short read, | |
6666 | * indicating that the user hit his EOF character, we need | |
6667 | * to notice it now, because if we try to read from the TTY | |
6668 | * again, the EOF condition will disappear. | |
6669 | * | |
6670 | * The comparison of cnt to sizeof(buf) is an optimization | |
6671 | * that prevents unnecessary calls to feof(). | |
6672 | * | |
6673 | * - jik 9/25/96 | |
6674 | */ | |
6675 | if (!(cnt < sizeof(buf) && PerlIO_eof(fp))) | |
6676 | goto screamer2; | |
79072805 LW |
6677 | } |
6678 | } | |
6679 | ||
8bfdd7d9 | 6680 | if (rspara) { /* have to do this both before and after */ |
c07a80fd | 6681 | while (i != EOF) { /* to make sure file boundaries work right */ |
760ac839 | 6682 | i = PerlIO_getc(fp); |
79072805 | 6683 | if (i != '\n') { |
760ac839 | 6684 | PerlIO_ungetc(fp,i); |
79072805 LW |
6685 | break; |
6686 | } | |
6687 | } | |
6688 | } | |
c07a80fd | 6689 | |
efd8b2ba | 6690 | return_string_or_null: |
c07a80fd | 6691 | return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch; |
79072805 LW |
6692 | } |
6693 | ||
954c1994 GS |
6694 | /* |
6695 | =for apidoc sv_inc | |
6696 | ||
645c22ef DM |
6697 | Auto-increment of the value in the SV, doing string to numeric conversion |
6698 | if necessary. Handles 'get' magic. | |
954c1994 GS |
6699 | |
6700 | =cut | |
6701 | */ | |
6702 | ||
79072805 | 6703 | void |
864dbfa3 | 6704 | Perl_sv_inc(pTHX_ register SV *sv) |
79072805 LW |
6705 | { |
6706 | register char *d; | |
463ee0b2 | 6707 | int flags; |
79072805 LW |
6708 | |
6709 | if (!sv) | |
6710 | return; | |
b23a5f78 GB |
6711 | if (SvGMAGICAL(sv)) |
6712 | mg_get(sv); | |
ed6116ce | 6713 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
6714 | if (SvIsCOW(sv)) |
6715 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 6716 | if (SvREADONLY(sv)) { |
3280af22 | 6717 | if (PL_curcop != &PL_compiling) |
cea2e8a9 | 6718 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 6719 | } |
a0d0e21e | 6720 | if (SvROK(sv)) { |
b5be31e9 | 6721 | IV i; |
9e7bc3e8 JD |
6722 | if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) |
6723 | return; | |
56431972 | 6724 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
6725 | sv_unref(sv); |
6726 | sv_setiv(sv, i); | |
a0d0e21e | 6727 | } |
ed6116ce | 6728 | } |
8990e307 | 6729 | flags = SvFLAGS(sv); |
28e5dec8 JH |
6730 | if ((flags & (SVp_NOK|SVp_IOK)) == SVp_NOK) { |
6731 | /* It's (privately or publicly) a float, but not tested as an | |
6732 | integer, so test it to see. */ | |
d460ef45 | 6733 | (void) SvIV(sv); |
28e5dec8 JH |
6734 | flags = SvFLAGS(sv); |
6735 | } | |
6736 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { | |
6737 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 6738 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 6739 | oops_its_int: |
59d8ce62 | 6740 | #endif |
25da4f38 IZ |
6741 | if (SvIsUV(sv)) { |
6742 | if (SvUVX(sv) == UV_MAX) | |
a1e868e7 | 6743 | sv_setnv(sv, UV_MAX_P1); |
25da4f38 IZ |
6744 | else |
6745 | (void)SvIOK_only_UV(sv); | |
6746 | ++SvUVX(sv); | |
6747 | } else { | |
6748 | if (SvIVX(sv) == IV_MAX) | |
28e5dec8 | 6749 | sv_setuv(sv, (UV)IV_MAX + 1); |
25da4f38 IZ |
6750 | else { |
6751 | (void)SvIOK_only(sv); | |
6752 | ++SvIVX(sv); | |
1c846c1f | 6753 | } |
55497cff | 6754 | } |
79072805 LW |
6755 | return; |
6756 | } | |
28e5dec8 JH |
6757 | if (flags & SVp_NOK) { |
6758 | (void)SvNOK_only(sv); | |
6759 | SvNVX(sv) += 1.0; | |
6760 | return; | |
6761 | } | |
6762 | ||
8990e307 | 6763 | if (!(flags & SVp_POK) || !*SvPVX(sv)) { |
28e5dec8 JH |
6764 | if ((flags & SVTYPEMASK) < SVt_PVIV) |
6765 | sv_upgrade(sv, SVt_IV); | |
6766 | (void)SvIOK_only(sv); | |
6767 | SvIVX(sv) = 1; | |
79072805 LW |
6768 | return; |
6769 | } | |
463ee0b2 | 6770 | d = SvPVX(sv); |
79072805 LW |
6771 | while (isALPHA(*d)) d++; |
6772 | while (isDIGIT(*d)) d++; | |
6773 | if (*d) { | |
28e5dec8 | 6774 | #ifdef PERL_PRESERVE_IVUV |
d1be9408 | 6775 | /* Got to punt this as an integer if needs be, but we don't issue |
28e5dec8 JH |
6776 | warnings. Probably ought to make the sv_iv_please() that does |
6777 | the conversion if possible, and silently. */ | |
c2988b20 | 6778 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
6779 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
6780 | /* Need to try really hard to see if it's an integer. | |
6781 | 9.22337203685478e+18 is an integer. | |
6782 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
6783 | so $a="9.22337203685478e+18"; $a+0; $a++ | |
6784 | needs to be the same as $a="9.22337203685478e+18"; $a++ | |
6785 | or we go insane. */ | |
d460ef45 | 6786 | |
28e5dec8 JH |
6787 | (void) sv_2iv(sv); |
6788 | if (SvIOK(sv)) | |
6789 | goto oops_its_int; | |
6790 | ||
6791 | /* sv_2iv *should* have made this an NV */ | |
6792 | if (flags & SVp_NOK) { | |
6793 | (void)SvNOK_only(sv); | |
6794 | SvNVX(sv) += 1.0; | |
6795 | return; | |
6796 | } | |
6797 | /* I don't think we can get here. Maybe I should assert this | |
6798 | And if we do get here I suspect that sv_setnv will croak. NWC | |
6799 | Fall through. */ | |
6800 | #if defined(USE_LONG_DOUBLE) | |
6801 | 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", | |
6802 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); | |
6803 | #else | |
1779d84d | 6804 | 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 |
6805 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); |
6806 | #endif | |
6807 | } | |
6808 | #endif /* PERL_PRESERVE_IVUV */ | |
6809 | sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); | |
79072805 LW |
6810 | return; |
6811 | } | |
6812 | d--; | |
463ee0b2 | 6813 | while (d >= SvPVX(sv)) { |
79072805 LW |
6814 | if (isDIGIT(*d)) { |
6815 | if (++*d <= '9') | |
6816 | return; | |
6817 | *(d--) = '0'; | |
6818 | } | |
6819 | else { | |
9d116dd7 JH |
6820 | #ifdef EBCDIC |
6821 | /* MKS: The original code here died if letters weren't consecutive. | |
6822 | * at least it didn't have to worry about non-C locales. The | |
6823 | * new code assumes that ('z'-'a')==('Z'-'A'), letters are | |
1c846c1f | 6824 | * arranged in order (although not consecutively) and that only |
9d116dd7 JH |
6825 | * [A-Za-z] are accepted by isALPHA in the C locale. |
6826 | */ | |
6827 | if (*d != 'z' && *d != 'Z') { | |
6828 | do { ++*d; } while (!isALPHA(*d)); | |
6829 | return; | |
6830 | } | |
6831 | *(d--) -= 'z' - 'a'; | |
6832 | #else | |
79072805 LW |
6833 | ++*d; |
6834 | if (isALPHA(*d)) | |
6835 | return; | |
6836 | *(d--) -= 'z' - 'a' + 1; | |
9d116dd7 | 6837 | #endif |
79072805 LW |
6838 | } |
6839 | } | |
6840 | /* oh,oh, the number grew */ | |
6841 | SvGROW(sv, SvCUR(sv) + 2); | |
6842 | SvCUR(sv)++; | |
463ee0b2 | 6843 | for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--) |
79072805 LW |
6844 | *d = d[-1]; |
6845 | if (isDIGIT(d[1])) | |
6846 | *d = '1'; | |
6847 | else | |
6848 | *d = d[1]; | |
6849 | } | |
6850 | ||
954c1994 GS |
6851 | /* |
6852 | =for apidoc sv_dec | |
6853 | ||
645c22ef DM |
6854 | Auto-decrement of the value in the SV, doing string to numeric conversion |
6855 | if necessary. Handles 'get' magic. | |
954c1994 GS |
6856 | |
6857 | =cut | |
6858 | */ | |
6859 | ||
79072805 | 6860 | void |
864dbfa3 | 6861 | Perl_sv_dec(pTHX_ register SV *sv) |
79072805 | 6862 | { |
463ee0b2 LW |
6863 | int flags; |
6864 | ||
79072805 LW |
6865 | if (!sv) |
6866 | return; | |
b23a5f78 GB |
6867 | if (SvGMAGICAL(sv)) |
6868 | mg_get(sv); | |
ed6116ce | 6869 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
6870 | if (SvIsCOW(sv)) |
6871 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 6872 | if (SvREADONLY(sv)) { |
3280af22 | 6873 | if (PL_curcop != &PL_compiling) |
cea2e8a9 | 6874 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 6875 | } |
a0d0e21e | 6876 | if (SvROK(sv)) { |
b5be31e9 | 6877 | IV i; |
9e7bc3e8 JD |
6878 | if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) |
6879 | return; | |
56431972 | 6880 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
6881 | sv_unref(sv); |
6882 | sv_setiv(sv, i); | |
a0d0e21e | 6883 | } |
ed6116ce | 6884 | } |
28e5dec8 JH |
6885 | /* Unlike sv_inc we don't have to worry about string-never-numbers |
6886 | and keeping them magic. But we mustn't warn on punting */ | |
8990e307 | 6887 | flags = SvFLAGS(sv); |
28e5dec8 JH |
6888 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { |
6889 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 6890 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 6891 | oops_its_int: |
59d8ce62 | 6892 | #endif |
25da4f38 IZ |
6893 | if (SvIsUV(sv)) { |
6894 | if (SvUVX(sv) == 0) { | |
6895 | (void)SvIOK_only(sv); | |
6896 | SvIVX(sv) = -1; | |
6897 | } | |
6898 | else { | |
6899 | (void)SvIOK_only_UV(sv); | |
6900 | --SvUVX(sv); | |
1c846c1f | 6901 | } |
25da4f38 IZ |
6902 | } else { |
6903 | if (SvIVX(sv) == IV_MIN) | |
65202027 | 6904 | sv_setnv(sv, (NV)IV_MIN - 1.0); |
25da4f38 IZ |
6905 | else { |
6906 | (void)SvIOK_only(sv); | |
6907 | --SvIVX(sv); | |
1c846c1f | 6908 | } |
55497cff | 6909 | } |
6910 | return; | |
6911 | } | |
28e5dec8 JH |
6912 | if (flags & SVp_NOK) { |
6913 | SvNVX(sv) -= 1.0; | |
6914 | (void)SvNOK_only(sv); | |
6915 | return; | |
6916 | } | |
8990e307 | 6917 | if (!(flags & SVp_POK)) { |
4633a7c4 LW |
6918 | if ((flags & SVTYPEMASK) < SVt_PVNV) |
6919 | sv_upgrade(sv, SVt_NV); | |
463ee0b2 | 6920 | SvNVX(sv) = -1.0; |
a0d0e21e | 6921 | (void)SvNOK_only(sv); |
79072805 LW |
6922 | return; |
6923 | } | |
28e5dec8 JH |
6924 | #ifdef PERL_PRESERVE_IVUV |
6925 | { | |
c2988b20 | 6926 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
6927 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
6928 | /* Need to try really hard to see if it's an integer. | |
6929 | 9.22337203685478e+18 is an integer. | |
6930 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
6931 | so $a="9.22337203685478e+18"; $a+0; $a-- | |
6932 | needs to be the same as $a="9.22337203685478e+18"; $a-- | |
6933 | or we go insane. */ | |
d460ef45 | 6934 | |
28e5dec8 JH |
6935 | (void) sv_2iv(sv); |
6936 | if (SvIOK(sv)) | |
6937 | goto oops_its_int; | |
6938 | ||
6939 | /* sv_2iv *should* have made this an NV */ | |
6940 | if (flags & SVp_NOK) { | |
6941 | (void)SvNOK_only(sv); | |
6942 | SvNVX(sv) -= 1.0; | |
6943 | return; | |
6944 | } | |
6945 | /* I don't think we can get here. Maybe I should assert this | |
6946 | And if we do get here I suspect that sv_setnv will croak. NWC | |
6947 | Fall through. */ | |
6948 | #if defined(USE_LONG_DOUBLE) | |
6949 | 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", | |
6950 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); | |
6951 | #else | |
1779d84d | 6952 | 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 |
6953 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); |
6954 | #endif | |
6955 | } | |
6956 | } | |
6957 | #endif /* PERL_PRESERVE_IVUV */ | |
097ee67d | 6958 | sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */ |
79072805 LW |
6959 | } |
6960 | ||
954c1994 GS |
6961 | /* |
6962 | =for apidoc sv_mortalcopy | |
6963 | ||
645c22ef | 6964 | Creates a new SV which is a copy of the original SV (using C<sv_setsv>). |
d4236ebc DM |
6965 | The new SV is marked as mortal. It will be destroyed "soon", either by an |
6966 | explicit call to FREETMPS, or by an implicit call at places such as | |
6967 | statement boundaries. See also C<sv_newmortal> and C<sv_2mortal>. | |
954c1994 GS |
6968 | |
6969 | =cut | |
6970 | */ | |
6971 | ||
79072805 LW |
6972 | /* Make a string that will exist for the duration of the expression |
6973 | * evaluation. Actually, it may have to last longer than that, but | |
6974 | * hopefully we won't free it until it has been assigned to a | |
6975 | * permanent location. */ | |
6976 | ||
6977 | SV * | |
864dbfa3 | 6978 | Perl_sv_mortalcopy(pTHX_ SV *oldstr) |
79072805 | 6979 | { |
463ee0b2 | 6980 | register SV *sv; |
b881518d | 6981 | |
4561caa4 | 6982 | new_SV(sv); |
79072805 | 6983 | sv_setsv(sv,oldstr); |
677b06e3 GS |
6984 | EXTEND_MORTAL(1); |
6985 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 LW |
6986 | SvTEMP_on(sv); |
6987 | return sv; | |
6988 | } | |
6989 | ||
954c1994 GS |
6990 | /* |
6991 | =for apidoc sv_newmortal | |
6992 | ||
645c22ef | 6993 | Creates a new null SV which is mortal. The reference count of the SV is |
d4236ebc DM |
6994 | set to 1. It will be destroyed "soon", either by an explicit call to |
6995 | FREETMPS, or by an implicit call at places such as statement boundaries. | |
6996 | See also C<sv_mortalcopy> and C<sv_2mortal>. | |
954c1994 GS |
6997 | |
6998 | =cut | |
6999 | */ | |
7000 | ||
8990e307 | 7001 | SV * |
864dbfa3 | 7002 | Perl_sv_newmortal(pTHX) |
8990e307 LW |
7003 | { |
7004 | register SV *sv; | |
7005 | ||
4561caa4 | 7006 | new_SV(sv); |
8990e307 | 7007 | SvFLAGS(sv) = SVs_TEMP; |
677b06e3 GS |
7008 | EXTEND_MORTAL(1); |
7009 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
79072805 LW |
7010 | return sv; |
7011 | } | |
7012 | ||
954c1994 GS |
7013 | /* |
7014 | =for apidoc sv_2mortal | |
7015 | ||
d4236ebc DM |
7016 | Marks an existing SV as mortal. The SV will be destroyed "soon", either |
7017 | by an explicit call to FREETMPS, or by an implicit call at places such as | |
7018 | statement boundaries. See also C<sv_newmortal> and C<sv_mortalcopy>. | |
954c1994 GS |
7019 | |
7020 | =cut | |
7021 | */ | |
7022 | ||
79072805 | 7023 | SV * |
864dbfa3 | 7024 | Perl_sv_2mortal(pTHX_ register SV *sv) |
79072805 LW |
7025 | { |
7026 | if (!sv) | |
7027 | return sv; | |
d689ffdd | 7028 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) |
11162842 | 7029 | return sv; |
677b06e3 GS |
7030 | EXTEND_MORTAL(1); |
7031 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 | 7032 | SvTEMP_on(sv); |
79072805 LW |
7033 | return sv; |
7034 | } | |
7035 | ||
954c1994 GS |
7036 | /* |
7037 | =for apidoc newSVpv | |
7038 | ||
7039 | Creates a new SV and copies a string into it. The reference count for the | |
7040 | SV is set to 1. If C<len> is zero, Perl will compute the length using | |
7041 | strlen(). For efficiency, consider using C<newSVpvn> instead. | |
7042 | ||
7043 | =cut | |
7044 | */ | |
7045 | ||
79072805 | 7046 | SV * |
864dbfa3 | 7047 | Perl_newSVpv(pTHX_ const char *s, STRLEN len) |
79072805 | 7048 | { |
463ee0b2 | 7049 | register SV *sv; |
79072805 | 7050 | |
4561caa4 | 7051 | new_SV(sv); |
79072805 LW |
7052 | if (!len) |
7053 | len = strlen(s); | |
7054 | sv_setpvn(sv,s,len); | |
7055 | return sv; | |
7056 | } | |
7057 | ||
954c1994 GS |
7058 | /* |
7059 | =for apidoc newSVpvn | |
7060 | ||
7061 | Creates a new SV and copies a string into it. The reference count for the | |
1c846c1f | 7062 | SV is set to 1. Note that if C<len> is zero, Perl will create a zero length |
954c1994 GS |
7063 | string. You are responsible for ensuring that the source string is at least |
7064 | C<len> bytes long. | |
7065 | ||
7066 | =cut | |
7067 | */ | |
7068 | ||
9da1e3b5 | 7069 | SV * |
864dbfa3 | 7070 | Perl_newSVpvn(pTHX_ const char *s, STRLEN len) |
9da1e3b5 MUN |
7071 | { |
7072 | register SV *sv; | |
7073 | ||
7074 | new_SV(sv); | |
9da1e3b5 MUN |
7075 | sv_setpvn(sv,s,len); |
7076 | return sv; | |
7077 | } | |
7078 | ||
1c846c1f NIS |
7079 | /* |
7080 | =for apidoc newSVpvn_share | |
7081 | ||
645c22ef DM |
7082 | Creates a new SV with its SvPVX pointing to a shared string in the string |
7083 | table. If the string does not already exist in the table, it is created | |
7084 | first. Turns on READONLY and FAKE. The string's hash is stored in the UV | |
7085 | slot of the SV; if the C<hash> parameter is non-zero, that value is used; | |
7086 | otherwise the hash is computed. The idea here is that as the string table | |
7087 | is used for shared hash keys these strings will have SvPVX == HeKEY and | |
7088 | hash lookup will avoid string compare. | |
1c846c1f NIS |
7089 | |
7090 | =cut | |
7091 | */ | |
7092 | ||
7093 | SV * | |
c3654f1a | 7094 | Perl_newSVpvn_share(pTHX_ const char *src, I32 len, U32 hash) |
1c846c1f NIS |
7095 | { |
7096 | register SV *sv; | |
c3654f1a IH |
7097 | bool is_utf8 = FALSE; |
7098 | if (len < 0) { | |
77caf834 | 7099 | STRLEN tmplen = -len; |
c3654f1a | 7100 | is_utf8 = TRUE; |
75a54232 JH |
7101 | /* See the note in hv.c:hv_fetch() --jhi */ |
7102 | src = (char*)bytes_from_utf8((U8*)src, &tmplen, &is_utf8); | |
7103 | len = tmplen; | |
7104 | } | |
1c846c1f | 7105 | if (!hash) |
5afd6d42 | 7106 | PERL_HASH(hash, src, len); |
1c846c1f NIS |
7107 | new_SV(sv); |
7108 | sv_upgrade(sv, SVt_PVIV); | |
c3654f1a | 7109 | SvPVX(sv) = sharepvn(src, is_utf8?-len:len, hash); |
1c846c1f NIS |
7110 | SvCUR(sv) = len; |
7111 | SvUVX(sv) = hash; | |
7112 | SvLEN(sv) = 0; | |
7113 | SvREADONLY_on(sv); | |
7114 | SvFAKE_on(sv); | |
7115 | SvPOK_on(sv); | |
c3654f1a IH |
7116 | if (is_utf8) |
7117 | SvUTF8_on(sv); | |
1c846c1f NIS |
7118 | return sv; |
7119 | } | |
7120 | ||
645c22ef | 7121 | |
cea2e8a9 | 7122 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
7123 | |
7124 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
7125 | * version of the main function, (which may itself be aliased to us). | |
7126 | * Don't access this version directly. | |
7127 | */ | |
7128 | ||
46fc3d4c | 7129 | SV * |
cea2e8a9 | 7130 | Perl_newSVpvf_nocontext(const char* pat, ...) |
46fc3d4c | 7131 | { |
cea2e8a9 | 7132 | dTHX; |
46fc3d4c | 7133 | register SV *sv; |
7134 | va_list args; | |
46fc3d4c | 7135 | va_start(args, pat); |
c5be433b | 7136 | sv = vnewSVpvf(pat, &args); |
46fc3d4c | 7137 | va_end(args); |
7138 | return sv; | |
7139 | } | |
cea2e8a9 | 7140 | #endif |
46fc3d4c | 7141 | |
954c1994 GS |
7142 | /* |
7143 | =for apidoc newSVpvf | |
7144 | ||
645c22ef | 7145 | Creates a new SV and initializes it with the string formatted like |
954c1994 GS |
7146 | C<sprintf>. |
7147 | ||
7148 | =cut | |
7149 | */ | |
7150 | ||
cea2e8a9 GS |
7151 | SV * |
7152 | Perl_newSVpvf(pTHX_ const char* pat, ...) | |
7153 | { | |
7154 | register SV *sv; | |
7155 | va_list args; | |
cea2e8a9 | 7156 | va_start(args, pat); |
c5be433b | 7157 | sv = vnewSVpvf(pat, &args); |
cea2e8a9 GS |
7158 | va_end(args); |
7159 | return sv; | |
7160 | } | |
46fc3d4c | 7161 | |
645c22ef DM |
7162 | /* backend for newSVpvf() and newSVpvf_nocontext() */ |
7163 | ||
79072805 | 7164 | SV * |
c5be433b GS |
7165 | Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args) |
7166 | { | |
7167 | register SV *sv; | |
7168 | new_SV(sv); | |
7169 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
7170 | return sv; | |
7171 | } | |
7172 | ||
954c1994 GS |
7173 | /* |
7174 | =for apidoc newSVnv | |
7175 | ||
7176 | Creates a new SV and copies a floating point value into it. | |
7177 | The reference count for the SV is set to 1. | |
7178 | ||
7179 | =cut | |
7180 | */ | |
7181 | ||
c5be433b | 7182 | SV * |
65202027 | 7183 | Perl_newSVnv(pTHX_ NV n) |
79072805 | 7184 | { |
463ee0b2 | 7185 | register SV *sv; |
79072805 | 7186 | |
4561caa4 | 7187 | new_SV(sv); |
79072805 LW |
7188 | sv_setnv(sv,n); |
7189 | return sv; | |
7190 | } | |
7191 | ||
954c1994 GS |
7192 | /* |
7193 | =for apidoc newSViv | |
7194 | ||
7195 | Creates a new SV and copies an integer into it. The reference count for the | |
7196 | SV is set to 1. | |
7197 | ||
7198 | =cut | |
7199 | */ | |
7200 | ||
79072805 | 7201 | SV * |
864dbfa3 | 7202 | Perl_newSViv(pTHX_ IV i) |
79072805 | 7203 | { |
463ee0b2 | 7204 | register SV *sv; |
79072805 | 7205 | |
4561caa4 | 7206 | new_SV(sv); |
79072805 LW |
7207 | sv_setiv(sv,i); |
7208 | return sv; | |
7209 | } | |
7210 | ||
954c1994 | 7211 | /* |
1a3327fb JH |
7212 | =for apidoc newSVuv |
7213 | ||
7214 | Creates a new SV and copies an unsigned integer into it. | |
7215 | The reference count for the SV is set to 1. | |
7216 | ||
7217 | =cut | |
7218 | */ | |
7219 | ||
7220 | SV * | |
7221 | Perl_newSVuv(pTHX_ UV u) | |
7222 | { | |
7223 | register SV *sv; | |
7224 | ||
7225 | new_SV(sv); | |
7226 | sv_setuv(sv,u); | |
7227 | return sv; | |
7228 | } | |
7229 | ||
7230 | /* | |
954c1994 GS |
7231 | =for apidoc newRV_noinc |
7232 | ||
7233 | Creates an RV wrapper for an SV. The reference count for the original | |
7234 | SV is B<not> incremented. | |
7235 | ||
7236 | =cut | |
7237 | */ | |
7238 | ||
2304df62 | 7239 | SV * |
864dbfa3 | 7240 | Perl_newRV_noinc(pTHX_ SV *tmpRef) |
2304df62 AD |
7241 | { |
7242 | register SV *sv; | |
7243 | ||
4561caa4 | 7244 | new_SV(sv); |
2304df62 | 7245 | sv_upgrade(sv, SVt_RV); |
76e3520e | 7246 | SvTEMP_off(tmpRef); |
d689ffdd | 7247 | SvRV(sv) = tmpRef; |
2304df62 | 7248 | SvROK_on(sv); |
2304df62 AD |
7249 | return sv; |
7250 | } | |
7251 | ||
ff276b08 | 7252 | /* newRV_inc is the official function name to use now. |
645c22ef DM |
7253 | * newRV_inc is in fact #defined to newRV in sv.h |
7254 | */ | |
7255 | ||
5f05dabc | 7256 | SV * |
864dbfa3 | 7257 | Perl_newRV(pTHX_ SV *tmpRef) |
5f05dabc | 7258 | { |
5f6447b6 | 7259 | return newRV_noinc(SvREFCNT_inc(tmpRef)); |
5f05dabc | 7260 | } |
5f05dabc | 7261 | |
954c1994 GS |
7262 | /* |
7263 | =for apidoc newSVsv | |
7264 | ||
7265 | Creates a new SV which is an exact duplicate of the original SV. | |
645c22ef | 7266 | (Uses C<sv_setsv>). |
954c1994 GS |
7267 | |
7268 | =cut | |
7269 | */ | |
7270 | ||
79072805 | 7271 | SV * |
864dbfa3 | 7272 | Perl_newSVsv(pTHX_ register SV *old) |
79072805 | 7273 | { |
463ee0b2 | 7274 | register SV *sv; |
79072805 LW |
7275 | |
7276 | if (!old) | |
7277 | return Nullsv; | |
8990e307 | 7278 | if (SvTYPE(old) == SVTYPEMASK) { |
0453d815 | 7279 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 7280 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "semi-panic: attempt to dup freed string"); |
79072805 LW |
7281 | return Nullsv; |
7282 | } | |
4561caa4 | 7283 | new_SV(sv); |
ff68c719 | 7284 | if (SvTEMP(old)) { |
7285 | SvTEMP_off(old); | |
463ee0b2 | 7286 | sv_setsv(sv,old); |
ff68c719 | 7287 | SvTEMP_on(old); |
79072805 LW |
7288 | } |
7289 | else | |
463ee0b2 LW |
7290 | sv_setsv(sv,old); |
7291 | return sv; | |
79072805 LW |
7292 | } |
7293 | ||
645c22ef DM |
7294 | /* |
7295 | =for apidoc sv_reset | |
7296 | ||
7297 | Underlying implementation for the C<reset> Perl function. | |
7298 | Note that the perl-level function is vaguely deprecated. | |
7299 | ||
7300 | =cut | |
7301 | */ | |
7302 | ||
79072805 | 7303 | void |
864dbfa3 | 7304 | Perl_sv_reset(pTHX_ register char *s, HV *stash) |
79072805 LW |
7305 | { |
7306 | register HE *entry; | |
7307 | register GV *gv; | |
7308 | register SV *sv; | |
7309 | register I32 i; | |
7310 | register PMOP *pm; | |
7311 | register I32 max; | |
4802d5d7 | 7312 | char todo[PERL_UCHAR_MAX+1]; |
79072805 | 7313 | |
49d8d3a1 MB |
7314 | if (!stash) |
7315 | return; | |
7316 | ||
79072805 LW |
7317 | if (!*s) { /* reset ?? searches */ |
7318 | for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) { | |
48c036b1 | 7319 | pm->op_pmdynflags &= ~PMdf_USED; |
79072805 LW |
7320 | } |
7321 | return; | |
7322 | } | |
7323 | ||
7324 | /* reset variables */ | |
7325 | ||
7326 | if (!HvARRAY(stash)) | |
7327 | return; | |
463ee0b2 LW |
7328 | |
7329 | Zero(todo, 256, char); | |
79072805 | 7330 | while (*s) { |
4802d5d7 | 7331 | i = (unsigned char)*s; |
79072805 LW |
7332 | if (s[1] == '-') { |
7333 | s += 2; | |
7334 | } | |
4802d5d7 | 7335 | max = (unsigned char)*s++; |
79072805 | 7336 | for ( ; i <= max; i++) { |
463ee0b2 LW |
7337 | todo[i] = 1; |
7338 | } | |
a0d0e21e | 7339 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
79072805 | 7340 | for (entry = HvARRAY(stash)[i]; |
9e35f4b3 GS |
7341 | entry; |
7342 | entry = HeNEXT(entry)) | |
7343 | { | |
1edc1566 | 7344 | if (!todo[(U8)*HeKEY(entry)]) |
463ee0b2 | 7345 | continue; |
1edc1566 | 7346 | gv = (GV*)HeVAL(entry); |
79072805 | 7347 | sv = GvSV(gv); |
9e35f4b3 GS |
7348 | if (SvTHINKFIRST(sv)) { |
7349 | if (!SvREADONLY(sv) && SvROK(sv)) | |
7350 | sv_unref(sv); | |
7351 | continue; | |
7352 | } | |
a0d0e21e | 7353 | (void)SvOK_off(sv); |
79072805 LW |
7354 | if (SvTYPE(sv) >= SVt_PV) { |
7355 | SvCUR_set(sv, 0); | |
463ee0b2 LW |
7356 | if (SvPVX(sv) != Nullch) |
7357 | *SvPVX(sv) = '\0'; | |
44a8e56a | 7358 | SvTAINT(sv); |
79072805 LW |
7359 | } |
7360 | if (GvAV(gv)) { | |
7361 | av_clear(GvAV(gv)); | |
7362 | } | |
44a8e56a | 7363 | if (GvHV(gv) && !HvNAME(GvHV(gv))) { |
463ee0b2 | 7364 | hv_clear(GvHV(gv)); |
fa6a1c44 | 7365 | #ifdef USE_ENVIRON_ARRAY |
4efc5df6 GS |
7366 | if (gv == PL_envgv |
7367 | # ifdef USE_ITHREADS | |
7368 | && PL_curinterp == aTHX | |
7369 | # endif | |
7370 | ) | |
7371 | { | |
79072805 | 7372 | environ[0] = Nullch; |
4efc5df6 | 7373 | } |
a0d0e21e | 7374 | #endif |
79072805 LW |
7375 | } |
7376 | } | |
7377 | } | |
7378 | } | |
7379 | } | |
7380 | ||
645c22ef DM |
7381 | /* |
7382 | =for apidoc sv_2io | |
7383 | ||
7384 | Using various gambits, try to get an IO from an SV: the IO slot if its a | |
7385 | GV; or the recursive result if we're an RV; or the IO slot of the symbol | |
7386 | named after the PV if we're a string. | |
7387 | ||
7388 | =cut | |
7389 | */ | |
7390 | ||
46fc3d4c | 7391 | IO* |
864dbfa3 | 7392 | Perl_sv_2io(pTHX_ SV *sv) |
46fc3d4c | 7393 | { |
7394 | IO* io; | |
7395 | GV* gv; | |
2d8e6c8d | 7396 | STRLEN n_a; |
46fc3d4c | 7397 | |
7398 | switch (SvTYPE(sv)) { | |
7399 | case SVt_PVIO: | |
7400 | io = (IO*)sv; | |
7401 | break; | |
7402 | case SVt_PVGV: | |
7403 | gv = (GV*)sv; | |
7404 | io = GvIO(gv); | |
7405 | if (!io) | |
cea2e8a9 | 7406 | Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv)); |
46fc3d4c | 7407 | break; |
7408 | default: | |
7409 | if (!SvOK(sv)) | |
cea2e8a9 | 7410 | Perl_croak(aTHX_ PL_no_usym, "filehandle"); |
46fc3d4c | 7411 | if (SvROK(sv)) |
7412 | return sv_2io(SvRV(sv)); | |
2d8e6c8d | 7413 | gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO); |
46fc3d4c | 7414 | if (gv) |
7415 | io = GvIO(gv); | |
7416 | else | |
7417 | io = 0; | |
7418 | if (!io) | |
35c1215d | 7419 | Perl_croak(aTHX_ "Bad filehandle: %"SVf, sv); |
46fc3d4c | 7420 | break; |
7421 | } | |
7422 | return io; | |
7423 | } | |
7424 | ||
645c22ef DM |
7425 | /* |
7426 | =for apidoc sv_2cv | |
7427 | ||
7428 | Using various gambits, try to get a CV from an SV; in addition, try if | |
7429 | possible to set C<*st> and C<*gvp> to the stash and GV associated with it. | |
7430 | ||
7431 | =cut | |
7432 | */ | |
7433 | ||
79072805 | 7434 | CV * |
864dbfa3 | 7435 | Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref) |
79072805 | 7436 | { |
c04a4dfe JH |
7437 | GV *gv = Nullgv; |
7438 | CV *cv = Nullcv; | |
2d8e6c8d | 7439 | STRLEN n_a; |
79072805 LW |
7440 | |
7441 | if (!sv) | |
93a17b20 | 7442 | return *gvp = Nullgv, Nullcv; |
79072805 | 7443 | switch (SvTYPE(sv)) { |
79072805 LW |
7444 | case SVt_PVCV: |
7445 | *st = CvSTASH(sv); | |
7446 | *gvp = Nullgv; | |
7447 | return (CV*)sv; | |
7448 | case SVt_PVHV: | |
7449 | case SVt_PVAV: | |
7450 | *gvp = Nullgv; | |
7451 | return Nullcv; | |
8990e307 LW |
7452 | case SVt_PVGV: |
7453 | gv = (GV*)sv; | |
a0d0e21e | 7454 | *gvp = gv; |
8990e307 LW |
7455 | *st = GvESTASH(gv); |
7456 | goto fix_gv; | |
7457 | ||
79072805 | 7458 | default: |
a0d0e21e LW |
7459 | if (SvGMAGICAL(sv)) |
7460 | mg_get(sv); | |
7461 | if (SvROK(sv)) { | |
f5284f61 IZ |
7462 | SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */ |
7463 | tryAMAGICunDEREF(to_cv); | |
7464 | ||
62f274bf GS |
7465 | sv = SvRV(sv); |
7466 | if (SvTYPE(sv) == SVt_PVCV) { | |
7467 | cv = (CV*)sv; | |
7468 | *gvp = Nullgv; | |
7469 | *st = CvSTASH(cv); | |
7470 | return cv; | |
7471 | } | |
7472 | else if(isGV(sv)) | |
7473 | gv = (GV*)sv; | |
7474 | else | |
cea2e8a9 | 7475 | Perl_croak(aTHX_ "Not a subroutine reference"); |
a0d0e21e | 7476 | } |
62f274bf | 7477 | else if (isGV(sv)) |
79072805 LW |
7478 | gv = (GV*)sv; |
7479 | else | |
2d8e6c8d | 7480 | gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV); |
79072805 LW |
7481 | *gvp = gv; |
7482 | if (!gv) | |
7483 | return Nullcv; | |
7484 | *st = GvESTASH(gv); | |
8990e307 | 7485 | fix_gv: |
8ebc5c01 | 7486 | if (lref && !GvCVu(gv)) { |
4633a7c4 | 7487 | SV *tmpsv; |
748a9306 | 7488 | ENTER; |
4633a7c4 | 7489 | tmpsv = NEWSV(704,0); |
16660edb | 7490 | gv_efullname3(tmpsv, gv, Nullch); |
f6ec51f7 GS |
7491 | /* XXX this is probably not what they think they're getting. |
7492 | * It has the same effect as "sub name;", i.e. just a forward | |
7493 | * declaration! */ | |
774d564b | 7494 | newSUB(start_subparse(FALSE, 0), |
4633a7c4 LW |
7495 | newSVOP(OP_CONST, 0, tmpsv), |
7496 | Nullop, | |
8990e307 | 7497 | Nullop); |
748a9306 | 7498 | LEAVE; |
8ebc5c01 | 7499 | if (!GvCVu(gv)) |
35c1215d NC |
7500 | Perl_croak(aTHX_ "Unable to create sub named \"%"SVf"\"", |
7501 | sv); | |
8990e307 | 7502 | } |
8ebc5c01 | 7503 | return GvCVu(gv); |
79072805 LW |
7504 | } |
7505 | } | |
7506 | ||
c461cf8f JH |
7507 | /* |
7508 | =for apidoc sv_true | |
7509 | ||
7510 | Returns true if the SV has a true value by Perl's rules. | |
645c22ef DM |
7511 | Use the C<SvTRUE> macro instead, which may call C<sv_true()> or may |
7512 | instead use an in-line version. | |
c461cf8f JH |
7513 | |
7514 | =cut | |
7515 | */ | |
7516 | ||
79072805 | 7517 | I32 |
864dbfa3 | 7518 | Perl_sv_true(pTHX_ register SV *sv) |
79072805 | 7519 | { |
8990e307 LW |
7520 | if (!sv) |
7521 | return 0; | |
79072805 | 7522 | if (SvPOK(sv)) { |
4e35701f NIS |
7523 | register XPV* tXpv; |
7524 | if ((tXpv = (XPV*)SvANY(sv)) && | |
c2f1de04 | 7525 | (tXpv->xpv_cur > 1 || |
4e35701f | 7526 | (tXpv->xpv_cur && *tXpv->xpv_pv != '0'))) |
79072805 LW |
7527 | return 1; |
7528 | else | |
7529 | return 0; | |
7530 | } | |
7531 | else { | |
7532 | if (SvIOK(sv)) | |
463ee0b2 | 7533 | return SvIVX(sv) != 0; |
79072805 LW |
7534 | else { |
7535 | if (SvNOK(sv)) | |
463ee0b2 | 7536 | return SvNVX(sv) != 0.0; |
79072805 | 7537 | else |
463ee0b2 | 7538 | return sv_2bool(sv); |
79072805 LW |
7539 | } |
7540 | } | |
7541 | } | |
79072805 | 7542 | |
645c22ef DM |
7543 | /* |
7544 | =for apidoc sv_iv | |
7545 | ||
7546 | A private implementation of the C<SvIVx> macro for compilers which can't | |
7547 | cope with complex macro expressions. Always use the macro instead. | |
7548 | ||
7549 | =cut | |
7550 | */ | |
7551 | ||
ff68c719 | 7552 | IV |
864dbfa3 | 7553 | Perl_sv_iv(pTHX_ register SV *sv) |
85e6fe83 | 7554 | { |
25da4f38 IZ |
7555 | if (SvIOK(sv)) { |
7556 | if (SvIsUV(sv)) | |
7557 | return (IV)SvUVX(sv); | |
ff68c719 | 7558 | return SvIVX(sv); |
25da4f38 | 7559 | } |
ff68c719 | 7560 | return sv_2iv(sv); |
85e6fe83 | 7561 | } |
85e6fe83 | 7562 | |
645c22ef DM |
7563 | /* |
7564 | =for apidoc sv_uv | |
7565 | ||
7566 | A private implementation of the C<SvUVx> macro for compilers which can't | |
7567 | cope with complex macro expressions. Always use the macro instead. | |
7568 | ||
7569 | =cut | |
7570 | */ | |
7571 | ||
ff68c719 | 7572 | UV |
864dbfa3 | 7573 | Perl_sv_uv(pTHX_ register SV *sv) |
ff68c719 | 7574 | { |
25da4f38 IZ |
7575 | if (SvIOK(sv)) { |
7576 | if (SvIsUV(sv)) | |
7577 | return SvUVX(sv); | |
7578 | return (UV)SvIVX(sv); | |
7579 | } | |
ff68c719 | 7580 | return sv_2uv(sv); |
7581 | } | |
85e6fe83 | 7582 | |
645c22ef DM |
7583 | /* |
7584 | =for apidoc sv_nv | |
7585 | ||
7586 | A private implementation of the C<SvNVx> macro for compilers which can't | |
7587 | cope with complex macro expressions. Always use the macro instead. | |
7588 | ||
7589 | =cut | |
7590 | */ | |
7591 | ||
65202027 | 7592 | NV |
864dbfa3 | 7593 | Perl_sv_nv(pTHX_ register SV *sv) |
79072805 | 7594 | { |
ff68c719 | 7595 | if (SvNOK(sv)) |
7596 | return SvNVX(sv); | |
7597 | return sv_2nv(sv); | |
79072805 | 7598 | } |
79072805 | 7599 | |
09540bc3 JH |
7600 | /* sv_pv() is now a macro using SvPV_nolen(); |
7601 | * this function provided for binary compatibility only | |
7602 | */ | |
7603 | ||
7604 | char * | |
7605 | Perl_sv_pv(pTHX_ SV *sv) | |
7606 | { | |
7607 | STRLEN n_a; | |
7608 | ||
7609 | if (SvPOK(sv)) | |
7610 | return SvPVX(sv); | |
7611 | ||
7612 | return sv_2pv(sv, &n_a); | |
7613 | } | |
7614 | ||
645c22ef DM |
7615 | /* |
7616 | =for apidoc sv_pv | |
7617 | ||
baca2b92 | 7618 | Use the C<SvPV_nolen> macro instead |
645c22ef | 7619 | |
645c22ef DM |
7620 | =for apidoc sv_pvn |
7621 | ||
7622 | A private implementation of the C<SvPV> macro for compilers which can't | |
7623 | cope with complex macro expressions. Always use the macro instead. | |
7624 | ||
7625 | =cut | |
7626 | */ | |
7627 | ||
1fa8b10d | 7628 | char * |
864dbfa3 | 7629 | Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp) |
79072805 | 7630 | { |
85e6fe83 LW |
7631 | if (SvPOK(sv)) { |
7632 | *lp = SvCUR(sv); | |
a0d0e21e | 7633 | return SvPVX(sv); |
85e6fe83 | 7634 | } |
463ee0b2 | 7635 | return sv_2pv(sv, lp); |
79072805 | 7636 | } |
79072805 | 7637 | |
6e9d1081 NC |
7638 | |
7639 | char * | |
7640 | Perl_sv_pvn_nomg(pTHX_ register SV *sv, STRLEN *lp) | |
7641 | { | |
7642 | if (SvPOK(sv)) { | |
7643 | *lp = SvCUR(sv); | |
7644 | return SvPVX(sv); | |
7645 | } | |
7646 | return sv_2pv_flags(sv, lp, 0); | |
7647 | } | |
7648 | ||
09540bc3 JH |
7649 | /* sv_pvn_force() is now a macro using Perl_sv_pvn_force_flags(); |
7650 | * this function provided for binary compatibility only | |
7651 | */ | |
7652 | ||
7653 | char * | |
7654 | Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp) | |
7655 | { | |
7656 | return sv_pvn_force_flags(sv, lp, SV_GMAGIC); | |
7657 | } | |
7658 | ||
c461cf8f JH |
7659 | /* |
7660 | =for apidoc sv_pvn_force | |
7661 | ||
7662 | Get a sensible string out of the SV somehow. | |
645c22ef DM |
7663 | A private implementation of the C<SvPV_force> macro for compilers which |
7664 | can't cope with complex macro expressions. Always use the macro instead. | |
c461cf8f | 7665 | |
8d6d96c1 HS |
7666 | =for apidoc sv_pvn_force_flags |
7667 | ||
7668 | Get a sensible string out of the SV somehow. | |
7669 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<sv> if | |
7670 | appropriate, else not. C<sv_pvn_force> and C<sv_pvn_force_nomg> are | |
7671 | implemented in terms of this function. | |
645c22ef DM |
7672 | You normally want to use the various wrapper macros instead: see |
7673 | C<SvPV_force> and C<SvPV_force_nomg> | |
8d6d96c1 HS |
7674 | |
7675 | =cut | |
7676 | */ | |
7677 | ||
7678 | char * | |
7679 | Perl_sv_pvn_force_flags(pTHX_ SV *sv, STRLEN *lp, I32 flags) | |
7680 | { | |
c04a4dfe | 7681 | char *s = NULL; |
a0d0e21e | 7682 | |
6fc92669 | 7683 | if (SvTHINKFIRST(sv) && !SvROK(sv)) |
765f542d | 7684 | sv_force_normal_flags(sv, 0); |
1c846c1f | 7685 | |
a0d0e21e LW |
7686 | if (SvPOK(sv)) { |
7687 | *lp = SvCUR(sv); | |
7688 | } | |
7689 | else { | |
748a9306 | 7690 | if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) { |
cea2e8a9 | 7691 | Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0), |
53e06cf0 | 7692 | OP_NAME(PL_op)); |
a0d0e21e | 7693 | } |
4633a7c4 | 7694 | else |
8d6d96c1 | 7695 | s = sv_2pv_flags(sv, lp, flags); |
a0d0e21e LW |
7696 | if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */ |
7697 | STRLEN len = *lp; | |
1c846c1f | 7698 | |
a0d0e21e LW |
7699 | if (SvROK(sv)) |
7700 | sv_unref(sv); | |
7701 | (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */ | |
7702 | SvGROW(sv, len + 1); | |
7703 | Move(s,SvPVX(sv),len,char); | |
7704 | SvCUR_set(sv, len); | |
7705 | *SvEND(sv) = '\0'; | |
7706 | } | |
7707 | if (!SvPOK(sv)) { | |
7708 | SvPOK_on(sv); /* validate pointer */ | |
7709 | SvTAINT(sv); | |
1d7c1841 GS |
7710 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
7711 | PTR2UV(sv),SvPVX(sv))); | |
a0d0e21e LW |
7712 | } |
7713 | } | |
7714 | return SvPVX(sv); | |
7715 | } | |
7716 | ||
09540bc3 JH |
7717 | /* sv_pvbyte () is now a macro using Perl_sv_2pv_flags(); |
7718 | * this function provided for binary compatibility only | |
7719 | */ | |
7720 | ||
7721 | char * | |
7722 | Perl_sv_pvbyte(pTHX_ SV *sv) | |
7723 | { | |
7724 | sv_utf8_downgrade(sv,0); | |
7725 | return sv_pv(sv); | |
7726 | } | |
7727 | ||
645c22ef DM |
7728 | /* |
7729 | =for apidoc sv_pvbyte | |
7730 | ||
baca2b92 | 7731 | Use C<SvPVbyte_nolen> instead. |
645c22ef | 7732 | |
645c22ef DM |
7733 | =for apidoc sv_pvbyten |
7734 | ||
7735 | A private implementation of the C<SvPVbyte> macro for compilers | |
7736 | which can't cope with complex macro expressions. Always use the macro | |
7737 | instead. | |
7738 | ||
7739 | =cut | |
7740 | */ | |
7741 | ||
7340a771 GS |
7742 | char * |
7743 | Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp) | |
7744 | { | |
ffebcc3e | 7745 | sv_utf8_downgrade(sv,0); |
7340a771 GS |
7746 | return sv_pvn(sv,lp); |
7747 | } | |
7748 | ||
645c22ef DM |
7749 | /* |
7750 | =for apidoc sv_pvbyten_force | |
7751 | ||
7752 | A private implementation of the C<SvPVbytex_force> macro for compilers | |
7753 | which can't cope with complex macro expressions. Always use the macro | |
7754 | instead. | |
7755 | ||
7756 | =cut | |
7757 | */ | |
7758 | ||
7340a771 GS |
7759 | char * |
7760 | Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp) | |
7761 | { | |
ffebcc3e | 7762 | sv_utf8_downgrade(sv,0); |
7340a771 GS |
7763 | return sv_pvn_force(sv,lp); |
7764 | } | |
7765 | ||
09540bc3 JH |
7766 | /* sv_pvutf8 () is now a macro using Perl_sv_2pv_flags(); |
7767 | * this function provided for binary compatibility only | |
7768 | */ | |
7769 | ||
7770 | char * | |
7771 | Perl_sv_pvutf8(pTHX_ SV *sv) | |
7772 | { | |
7773 | sv_utf8_upgrade(sv); | |
7774 | return sv_pv(sv); | |
7775 | } | |
7776 | ||
645c22ef DM |
7777 | /* |
7778 | =for apidoc sv_pvutf8 | |
7779 | ||
baca2b92 | 7780 | Use the C<SvPVutf8_nolen> macro instead |
645c22ef | 7781 | |
645c22ef DM |
7782 | =for apidoc sv_pvutf8n |
7783 | ||
7784 | A private implementation of the C<SvPVutf8> macro for compilers | |
7785 | which can't cope with complex macro expressions. Always use the macro | |
7786 | instead. | |
7787 | ||
7788 | =cut | |
7789 | */ | |
7790 | ||
7340a771 GS |
7791 | char * |
7792 | Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp) | |
7793 | { | |
560a288e | 7794 | sv_utf8_upgrade(sv); |
7340a771 GS |
7795 | return sv_pvn(sv,lp); |
7796 | } | |
7797 | ||
c461cf8f JH |
7798 | /* |
7799 | =for apidoc sv_pvutf8n_force | |
7800 | ||
645c22ef DM |
7801 | A private implementation of the C<SvPVutf8_force> macro for compilers |
7802 | which can't cope with complex macro expressions. Always use the macro | |
7803 | instead. | |
c461cf8f JH |
7804 | |
7805 | =cut | |
7806 | */ | |
7807 | ||
7340a771 GS |
7808 | char * |
7809 | Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp) | |
7810 | { | |
560a288e | 7811 | sv_utf8_upgrade(sv); |
7340a771 GS |
7812 | return sv_pvn_force(sv,lp); |
7813 | } | |
7814 | ||
c461cf8f JH |
7815 | /* |
7816 | =for apidoc sv_reftype | |
7817 | ||
7818 | Returns a string describing what the SV is a reference to. | |
7819 | ||
7820 | =cut | |
7821 | */ | |
7822 | ||
7340a771 | 7823 | char * |
864dbfa3 | 7824 | Perl_sv_reftype(pTHX_ SV *sv, int ob) |
a0d0e21e | 7825 | { |
c86bf373 | 7826 | if (ob && SvOBJECT(sv)) { |
e27ad1f2 AV |
7827 | if (HvNAME(SvSTASH(sv))) |
7828 | return HvNAME(SvSTASH(sv)); | |
7829 | else | |
7830 | return "__ANON__"; | |
c86bf373 | 7831 | } |
a0d0e21e LW |
7832 | else { |
7833 | switch (SvTYPE(sv)) { | |
7834 | case SVt_NULL: | |
7835 | case SVt_IV: | |
7836 | case SVt_NV: | |
7837 | case SVt_RV: | |
7838 | case SVt_PV: | |
7839 | case SVt_PVIV: | |
7840 | case SVt_PVNV: | |
7841 | case SVt_PVMG: | |
7842 | case SVt_PVBM: | |
439cb1c4 JP |
7843 | if (SvVOK(sv)) |
7844 | return "VSTRING"; | |
a0d0e21e LW |
7845 | if (SvROK(sv)) |
7846 | return "REF"; | |
7847 | else | |
7848 | return "SCALAR"; | |
dd28f7bb | 7849 | case SVt_PVLV: return SvROK(sv) ? "REF" : "LVALUE"; |
a0d0e21e LW |
7850 | case SVt_PVAV: return "ARRAY"; |
7851 | case SVt_PVHV: return "HASH"; | |
7852 | case SVt_PVCV: return "CODE"; | |
7853 | case SVt_PVGV: return "GLOB"; | |
1d2dff63 | 7854 | case SVt_PVFM: return "FORMAT"; |
27f9d8f3 | 7855 | case SVt_PVIO: return "IO"; |
a0d0e21e LW |
7856 | default: return "UNKNOWN"; |
7857 | } | |
7858 | } | |
7859 | } | |
7860 | ||
954c1994 GS |
7861 | /* |
7862 | =for apidoc sv_isobject | |
7863 | ||
7864 | Returns a boolean indicating whether the SV is an RV pointing to a blessed | |
7865 | object. If the SV is not an RV, or if the object is not blessed, then this | |
7866 | will return false. | |
7867 | ||
7868 | =cut | |
7869 | */ | |
7870 | ||
463ee0b2 | 7871 | int |
864dbfa3 | 7872 | Perl_sv_isobject(pTHX_ SV *sv) |
85e6fe83 | 7873 | { |
68dc0745 | 7874 | if (!sv) |
7875 | return 0; | |
7876 | if (SvGMAGICAL(sv)) | |
7877 | mg_get(sv); | |
85e6fe83 LW |
7878 | if (!SvROK(sv)) |
7879 | return 0; | |
7880 | sv = (SV*)SvRV(sv); | |
7881 | if (!SvOBJECT(sv)) | |
7882 | return 0; | |
7883 | return 1; | |
7884 | } | |
7885 | ||
954c1994 GS |
7886 | /* |
7887 | =for apidoc sv_isa | |
7888 | ||
7889 | Returns a boolean indicating whether the SV is blessed into the specified | |
7890 | class. This does not check for subtypes; use C<sv_derived_from> to verify | |
7891 | an inheritance relationship. | |
7892 | ||
7893 | =cut | |
7894 | */ | |
7895 | ||
85e6fe83 | 7896 | int |
864dbfa3 | 7897 | Perl_sv_isa(pTHX_ SV *sv, const char *name) |
463ee0b2 | 7898 | { |
68dc0745 | 7899 | if (!sv) |
7900 | return 0; | |
7901 | if (SvGMAGICAL(sv)) | |
7902 | mg_get(sv); | |
ed6116ce | 7903 | if (!SvROK(sv)) |
463ee0b2 | 7904 | return 0; |
ed6116ce LW |
7905 | sv = (SV*)SvRV(sv); |
7906 | if (!SvOBJECT(sv)) | |
463ee0b2 | 7907 | return 0; |
e27ad1f2 AV |
7908 | if (!HvNAME(SvSTASH(sv))) |
7909 | return 0; | |
463ee0b2 LW |
7910 | |
7911 | return strEQ(HvNAME(SvSTASH(sv)), name); | |
7912 | } | |
7913 | ||
954c1994 GS |
7914 | /* |
7915 | =for apidoc newSVrv | |
7916 | ||
7917 | Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then | |
7918 | it will be upgraded to one. If C<classname> is non-null then the new SV will | |
7919 | be blessed in the specified package. The new SV is returned and its | |
7920 | reference count is 1. | |
7921 | ||
7922 | =cut | |
7923 | */ | |
7924 | ||
463ee0b2 | 7925 | SV* |
864dbfa3 | 7926 | Perl_newSVrv(pTHX_ SV *rv, const char *classname) |
463ee0b2 | 7927 | { |
463ee0b2 LW |
7928 | SV *sv; |
7929 | ||
4561caa4 | 7930 | new_SV(sv); |
51cf62d8 | 7931 | |
765f542d | 7932 | SV_CHECK_THINKFIRST_COW_DROP(rv); |
51cf62d8 | 7933 | SvAMAGIC_off(rv); |
51cf62d8 | 7934 | |
0199fce9 JD |
7935 | if (SvTYPE(rv) >= SVt_PVMG) { |
7936 | U32 refcnt = SvREFCNT(rv); | |
7937 | SvREFCNT(rv) = 0; | |
7938 | sv_clear(rv); | |
7939 | SvFLAGS(rv) = 0; | |
7940 | SvREFCNT(rv) = refcnt; | |
7941 | } | |
7942 | ||
51cf62d8 | 7943 | if (SvTYPE(rv) < SVt_RV) |
0199fce9 JD |
7944 | sv_upgrade(rv, SVt_RV); |
7945 | else if (SvTYPE(rv) > SVt_RV) { | |
7946 | (void)SvOOK_off(rv); | |
7947 | if (SvPVX(rv) && SvLEN(rv)) | |
7948 | Safefree(SvPVX(rv)); | |
7949 | SvCUR_set(rv, 0); | |
7950 | SvLEN_set(rv, 0); | |
7951 | } | |
51cf62d8 OT |
7952 | |
7953 | (void)SvOK_off(rv); | |
053fc874 | 7954 | SvRV(rv) = sv; |
ed6116ce | 7955 | SvROK_on(rv); |
463ee0b2 | 7956 | |
a0d0e21e LW |
7957 | if (classname) { |
7958 | HV* stash = gv_stashpv(classname, TRUE); | |
7959 | (void)sv_bless(rv, stash); | |
7960 | } | |
7961 | return sv; | |
7962 | } | |
7963 | ||
954c1994 GS |
7964 | /* |
7965 | =for apidoc sv_setref_pv | |
7966 | ||
7967 | Copies a pointer into a new SV, optionally blessing the SV. The C<rv> | |
7968 | argument will be upgraded to an RV. That RV will be modified to point to | |
7969 | the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed | |
7970 | into the SV. The C<classname> argument indicates the package for the | |
7971 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
7972 | will be returned and will have a reference count of 1. | |
7973 | ||
7974 | Do not use with other Perl types such as HV, AV, SV, CV, because those | |
7975 | objects will become corrupted by the pointer copy process. | |
7976 | ||
7977 | Note that C<sv_setref_pvn> copies the string while this copies the pointer. | |
7978 | ||
7979 | =cut | |
7980 | */ | |
7981 | ||
a0d0e21e | 7982 | SV* |
864dbfa3 | 7983 | Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv) |
a0d0e21e | 7984 | { |
189b2af5 | 7985 | if (!pv) { |
3280af22 | 7986 | sv_setsv(rv, &PL_sv_undef); |
189b2af5 GS |
7987 | SvSETMAGIC(rv); |
7988 | } | |
a0d0e21e | 7989 | else |
56431972 | 7990 | sv_setiv(newSVrv(rv,classname), PTR2IV(pv)); |
a0d0e21e LW |
7991 | return rv; |
7992 | } | |
7993 | ||
954c1994 GS |
7994 | /* |
7995 | =for apidoc sv_setref_iv | |
7996 | ||
7997 | Copies an integer into a new SV, optionally blessing the SV. The C<rv> | |
7998 | argument will be upgraded to an RV. That RV will be modified to point to | |
7999 | the new SV. The C<classname> argument indicates the package for the | |
8000 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
8001 | will be returned and will have a reference count of 1. | |
8002 | ||
8003 | =cut | |
8004 | */ | |
8005 | ||
a0d0e21e | 8006 | SV* |
864dbfa3 | 8007 | Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv) |
a0d0e21e LW |
8008 | { |
8009 | sv_setiv(newSVrv(rv,classname), iv); | |
8010 | return rv; | |
8011 | } | |
8012 | ||
954c1994 | 8013 | /* |
e1c57cef JH |
8014 | =for apidoc sv_setref_uv |
8015 | ||
8016 | Copies an unsigned integer into a new SV, optionally blessing the SV. The C<rv> | |
8017 | argument will be upgraded to an RV. That RV will be modified to point to | |
8018 | the new SV. The C<classname> argument indicates the package for the | |
8019 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
8020 | will be returned and will have a reference count of 1. | |
8021 | ||
8022 | =cut | |
8023 | */ | |
8024 | ||
8025 | SV* | |
8026 | Perl_sv_setref_uv(pTHX_ SV *rv, const char *classname, UV uv) | |
8027 | { | |
8028 | sv_setuv(newSVrv(rv,classname), uv); | |
8029 | return rv; | |
8030 | } | |
8031 | ||
8032 | /* | |
954c1994 GS |
8033 | =for apidoc sv_setref_nv |
8034 | ||
8035 | Copies a double into a new SV, optionally blessing the SV. The C<rv> | |
8036 | argument will be upgraded to an RV. That RV will be modified to point to | |
8037 | the new SV. The C<classname> argument indicates the package for the | |
8038 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
8039 | will be returned and will have a reference count of 1. | |
8040 | ||
8041 | =cut | |
8042 | */ | |
8043 | ||
a0d0e21e | 8044 | SV* |
65202027 | 8045 | Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv) |
a0d0e21e LW |
8046 | { |
8047 | sv_setnv(newSVrv(rv,classname), nv); | |
8048 | return rv; | |
8049 | } | |
463ee0b2 | 8050 | |
954c1994 GS |
8051 | /* |
8052 | =for apidoc sv_setref_pvn | |
8053 | ||
8054 | Copies a string into a new SV, optionally blessing the SV. The length of the | |
8055 | string must be specified with C<n>. The C<rv> argument will be upgraded to | |
8056 | an RV. That RV will be modified to point to the new SV. The C<classname> | |
8057 | argument indicates the package for the blessing. Set C<classname> to | |
8058 | C<Nullch> to avoid the blessing. The new SV will be returned and will have | |
8059 | a reference count of 1. | |
8060 | ||
8061 | Note that C<sv_setref_pv> copies the pointer while this copies the string. | |
8062 | ||
8063 | =cut | |
8064 | */ | |
8065 | ||
a0d0e21e | 8066 | SV* |
864dbfa3 | 8067 | Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n) |
a0d0e21e LW |
8068 | { |
8069 | sv_setpvn(newSVrv(rv,classname), pv, n); | |
463ee0b2 LW |
8070 | return rv; |
8071 | } | |
8072 | ||
954c1994 GS |
8073 | /* |
8074 | =for apidoc sv_bless | |
8075 | ||
8076 | Blesses an SV into a specified package. The SV must be an RV. The package | |
8077 | must be designated by its stash (see C<gv_stashpv()>). The reference count | |
8078 | of the SV is unaffected. | |
8079 | ||
8080 | =cut | |
8081 | */ | |
8082 | ||
a0d0e21e | 8083 | SV* |
864dbfa3 | 8084 | Perl_sv_bless(pTHX_ SV *sv, HV *stash) |
a0d0e21e | 8085 | { |
76e3520e | 8086 | SV *tmpRef; |
a0d0e21e | 8087 | if (!SvROK(sv)) |
cea2e8a9 | 8088 | Perl_croak(aTHX_ "Can't bless non-reference value"); |
76e3520e GS |
8089 | tmpRef = SvRV(sv); |
8090 | if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) { | |
8091 | if (SvREADONLY(tmpRef)) | |
cea2e8a9 | 8092 | Perl_croak(aTHX_ PL_no_modify); |
76e3520e GS |
8093 | if (SvOBJECT(tmpRef)) { |
8094 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 8095 | --PL_sv_objcount; |
76e3520e | 8096 | SvREFCNT_dec(SvSTASH(tmpRef)); |
2e3febc6 | 8097 | } |
a0d0e21e | 8098 | } |
76e3520e GS |
8099 | SvOBJECT_on(tmpRef); |
8100 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 8101 | ++PL_sv_objcount; |
76e3520e GS |
8102 | (void)SvUPGRADE(tmpRef, SVt_PVMG); |
8103 | SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash); | |
a0d0e21e | 8104 | |
2e3febc6 CS |
8105 | if (Gv_AMG(stash)) |
8106 | SvAMAGIC_on(sv); | |
8107 | else | |
8108 | SvAMAGIC_off(sv); | |
a0d0e21e | 8109 | |
1edbfb88 AB |
8110 | if(SvSMAGICAL(tmpRef)) |
8111 | if(mg_find(tmpRef, PERL_MAGIC_ext) || mg_find(tmpRef, PERL_MAGIC_uvar)) | |
8112 | mg_set(tmpRef); | |
8113 | ||
8114 | ||
ecdeb87c | 8115 | |
a0d0e21e LW |
8116 | return sv; |
8117 | } | |
8118 | ||
645c22ef | 8119 | /* Downgrades a PVGV to a PVMG. |
645c22ef DM |
8120 | */ |
8121 | ||
76e3520e | 8122 | STATIC void |
cea2e8a9 | 8123 | S_sv_unglob(pTHX_ SV *sv) |
a0d0e21e | 8124 | { |
850fabdf GS |
8125 | void *xpvmg; |
8126 | ||
a0d0e21e LW |
8127 | assert(SvTYPE(sv) == SVt_PVGV); |
8128 | SvFAKE_off(sv); | |
8129 | if (GvGP(sv)) | |
1edc1566 | 8130 | gp_free((GV*)sv); |
e826b3c7 GS |
8131 | if (GvSTASH(sv)) { |
8132 | SvREFCNT_dec(GvSTASH(sv)); | |
8133 | GvSTASH(sv) = Nullhv; | |
8134 | } | |
14befaf4 | 8135 | sv_unmagic(sv, PERL_MAGIC_glob); |
a0d0e21e | 8136 | Safefree(GvNAME(sv)); |
a5f75d66 | 8137 | GvMULTI_off(sv); |
850fabdf GS |
8138 | |
8139 | /* need to keep SvANY(sv) in the right arena */ | |
8140 | xpvmg = new_XPVMG(); | |
8141 | StructCopy(SvANY(sv), xpvmg, XPVMG); | |
8142 | del_XPVGV(SvANY(sv)); | |
8143 | SvANY(sv) = xpvmg; | |
8144 | ||
a0d0e21e LW |
8145 | SvFLAGS(sv) &= ~SVTYPEMASK; |
8146 | SvFLAGS(sv) |= SVt_PVMG; | |
8147 | } | |
8148 | ||
954c1994 | 8149 | /* |
840a7b70 | 8150 | =for apidoc sv_unref_flags |
954c1994 GS |
8151 | |
8152 | Unsets the RV status of the SV, and decrements the reference count of | |
8153 | whatever was being referenced by the RV. This can almost be thought of | |
840a7b70 IZ |
8154 | as a reversal of C<newSVrv>. The C<cflags> argument can contain |
8155 | C<SV_IMMEDIATE_UNREF> to force the reference count to be decremented | |
8156 | (otherwise the decrementing is conditional on the reference count being | |
8157 | different from one or the reference being a readonly SV). | |
7889fe52 | 8158 | See C<SvROK_off>. |
954c1994 GS |
8159 | |
8160 | =cut | |
8161 | */ | |
8162 | ||
ed6116ce | 8163 | void |
840a7b70 | 8164 | Perl_sv_unref_flags(pTHX_ SV *sv, U32 flags) |
ed6116ce | 8165 | { |
a0d0e21e | 8166 | SV* rv = SvRV(sv); |
810b8aa5 GS |
8167 | |
8168 | if (SvWEAKREF(sv)) { | |
8169 | sv_del_backref(sv); | |
8170 | SvWEAKREF_off(sv); | |
8171 | SvRV(sv) = 0; | |
8172 | return; | |
8173 | } | |
ed6116ce LW |
8174 | SvRV(sv) = 0; |
8175 | SvROK_off(sv); | |
04ca4930 NC |
8176 | /* You can't have a || SvREADONLY(rv) here, as $a = $$a, where $a was |
8177 | assigned to as BEGIN {$a = \"Foo"} will fail. */ | |
8178 | if (SvREFCNT(rv) != 1 || (flags & SV_IMMEDIATE_UNREF)) | |
4633a7c4 | 8179 | SvREFCNT_dec(rv); |
840a7b70 | 8180 | else /* XXX Hack, but hard to make $a=$a->[1] work otherwise */ |
4633a7c4 | 8181 | sv_2mortal(rv); /* Schedule for freeing later */ |
ed6116ce | 8182 | } |
8990e307 | 8183 | |
840a7b70 IZ |
8184 | /* |
8185 | =for apidoc sv_unref | |
8186 | ||
8187 | Unsets the RV status of the SV, and decrements the reference count of | |
8188 | whatever was being referenced by the RV. This can almost be thought of | |
8189 | as a reversal of C<newSVrv>. This is C<sv_unref_flags> with the C<flag> | |
7889fe52 | 8190 | being zero. See C<SvROK_off>. |
840a7b70 IZ |
8191 | |
8192 | =cut | |
8193 | */ | |
8194 | ||
8195 | void | |
8196 | Perl_sv_unref(pTHX_ SV *sv) | |
8197 | { | |
8198 | sv_unref_flags(sv, 0); | |
8199 | } | |
8200 | ||
645c22ef DM |
8201 | /* |
8202 | =for apidoc sv_taint | |
8203 | ||
8204 | Taint an SV. Use C<SvTAINTED_on> instead. | |
8205 | =cut | |
8206 | */ | |
8207 | ||
bbce6d69 | 8208 | void |
864dbfa3 | 8209 | Perl_sv_taint(pTHX_ SV *sv) |
bbce6d69 | 8210 | { |
14befaf4 | 8211 | sv_magic((sv), Nullsv, PERL_MAGIC_taint, Nullch, 0); |
bbce6d69 | 8212 | } |
8213 | ||
645c22ef DM |
8214 | /* |
8215 | =for apidoc sv_untaint | |
8216 | ||
8217 | Untaint an SV. Use C<SvTAINTED_off> instead. | |
8218 | =cut | |
8219 | */ | |
8220 | ||
bbce6d69 | 8221 | void |
864dbfa3 | 8222 | Perl_sv_untaint(pTHX_ SV *sv) |
bbce6d69 | 8223 | { |
13f57bf8 | 8224 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
14befaf4 | 8225 | MAGIC *mg = mg_find(sv, PERL_MAGIC_taint); |
36477c24 | 8226 | if (mg) |
565764a8 | 8227 | mg->mg_len &= ~1; |
36477c24 | 8228 | } |
bbce6d69 | 8229 | } |
8230 | ||
645c22ef DM |
8231 | /* |
8232 | =for apidoc sv_tainted | |
8233 | ||
8234 | Test an SV for taintedness. Use C<SvTAINTED> instead. | |
8235 | =cut | |
8236 | */ | |
8237 | ||
bbce6d69 | 8238 | bool |
864dbfa3 | 8239 | Perl_sv_tainted(pTHX_ SV *sv) |
bbce6d69 | 8240 | { |
13f57bf8 | 8241 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
14befaf4 | 8242 | MAGIC *mg = mg_find(sv, PERL_MAGIC_taint); |
155aba94 | 8243 | if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv))) |
36477c24 | 8244 | return TRUE; |
8245 | } | |
8246 | return FALSE; | |
bbce6d69 | 8247 | } |
8248 | ||
09540bc3 JH |
8249 | /* |
8250 | =for apidoc sv_setpviv | |
8251 | ||
8252 | Copies an integer into the given SV, also updating its string value. | |
8253 | Does not handle 'set' magic. See C<sv_setpviv_mg>. | |
8254 | ||
8255 | =cut | |
8256 | */ | |
8257 | ||
8258 | void | |
8259 | Perl_sv_setpviv(pTHX_ SV *sv, IV iv) | |
8260 | { | |
8261 | char buf[TYPE_CHARS(UV)]; | |
8262 | char *ebuf; | |
8263 | char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf); | |
8264 | ||
8265 | sv_setpvn(sv, ptr, ebuf - ptr); | |
8266 | } | |
8267 | ||
8268 | /* | |
8269 | =for apidoc sv_setpviv_mg | |
8270 | ||
8271 | Like C<sv_setpviv>, but also handles 'set' magic. | |
8272 | ||
8273 | =cut | |
8274 | */ | |
8275 | ||
8276 | void | |
8277 | Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv) | |
8278 | { | |
8279 | char buf[TYPE_CHARS(UV)]; | |
8280 | char *ebuf; | |
8281 | char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf); | |
8282 | ||
8283 | sv_setpvn(sv, ptr, ebuf - ptr); | |
8284 | SvSETMAGIC(sv); | |
8285 | } | |
8286 | ||
cea2e8a9 | 8287 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
8288 | |
8289 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
8290 | * version of the main function, (which may itself be aliased to us). | |
8291 | * Don't access this version directly. | |
8292 | */ | |
8293 | ||
cea2e8a9 GS |
8294 | void |
8295 | Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...) | |
8296 | { | |
8297 | dTHX; | |
8298 | va_list args; | |
8299 | va_start(args, pat); | |
c5be433b | 8300 | sv_vsetpvf(sv, pat, &args); |
cea2e8a9 GS |
8301 | va_end(args); |
8302 | } | |
8303 | ||
645c22ef DM |
8304 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
8305 | * version of the main function, (which may itself be aliased to us). | |
8306 | * Don't access this version directly. | |
8307 | */ | |
cea2e8a9 GS |
8308 | |
8309 | void | |
8310 | Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
8311 | { | |
8312 | dTHX; | |
8313 | va_list args; | |
8314 | va_start(args, pat); | |
c5be433b | 8315 | sv_vsetpvf_mg(sv, pat, &args); |
cea2e8a9 | 8316 | va_end(args); |
cea2e8a9 GS |
8317 | } |
8318 | #endif | |
8319 | ||
954c1994 GS |
8320 | /* |
8321 | =for apidoc sv_setpvf | |
8322 | ||
8323 | Processes its arguments like C<sprintf> and sets an SV to the formatted | |
8324 | output. Does not handle 'set' magic. See C<sv_setpvf_mg>. | |
8325 | ||
8326 | =cut | |
8327 | */ | |
8328 | ||
46fc3d4c | 8329 | void |
864dbfa3 | 8330 | Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 8331 | { |
8332 | va_list args; | |
46fc3d4c | 8333 | va_start(args, pat); |
c5be433b | 8334 | sv_vsetpvf(sv, pat, &args); |
46fc3d4c | 8335 | va_end(args); |
8336 | } | |
8337 | ||
645c22ef DM |
8338 | /* backend for C<sv_setpvf> and C<sv_setpvf_nocontext> */ |
8339 | ||
c5be433b GS |
8340 | void |
8341 | Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args) | |
8342 | { | |
8343 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
8344 | } | |
ef50df4b | 8345 | |
954c1994 GS |
8346 | /* |
8347 | =for apidoc sv_setpvf_mg | |
8348 | ||
8349 | Like C<sv_setpvf>, but also handles 'set' magic. | |
8350 | ||
8351 | =cut | |
8352 | */ | |
8353 | ||
ef50df4b | 8354 | void |
864dbfa3 | 8355 | Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
8356 | { |
8357 | va_list args; | |
ef50df4b | 8358 | va_start(args, pat); |
c5be433b | 8359 | sv_vsetpvf_mg(sv, pat, &args); |
ef50df4b | 8360 | va_end(args); |
c5be433b GS |
8361 | } |
8362 | ||
645c22ef DM |
8363 | /* backend for C<sv_setpvf_mg> C<setpvf_mg_nocontext> */ |
8364 | ||
c5be433b GS |
8365 | void |
8366 | Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
8367 | { | |
8368 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
ef50df4b GS |
8369 | SvSETMAGIC(sv); |
8370 | } | |
8371 | ||
cea2e8a9 | 8372 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
8373 | |
8374 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
8375 | * version of the main function, (which may itself be aliased to us). | |
8376 | * Don't access this version directly. | |
8377 | */ | |
8378 | ||
cea2e8a9 GS |
8379 | void |
8380 | Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...) | |
8381 | { | |
8382 | dTHX; | |
8383 | va_list args; | |
8384 | va_start(args, pat); | |
c5be433b | 8385 | sv_vcatpvf(sv, pat, &args); |
cea2e8a9 GS |
8386 | va_end(args); |
8387 | } | |
8388 | ||
645c22ef DM |
8389 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
8390 | * version of the main function, (which may itself be aliased to us). | |
8391 | * Don't access this version directly. | |
8392 | */ | |
8393 | ||
cea2e8a9 GS |
8394 | void |
8395 | Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
8396 | { | |
8397 | dTHX; | |
8398 | va_list args; | |
8399 | va_start(args, pat); | |
c5be433b | 8400 | sv_vcatpvf_mg(sv, pat, &args); |
cea2e8a9 | 8401 | va_end(args); |
cea2e8a9 GS |
8402 | } |
8403 | #endif | |
8404 | ||
954c1994 GS |
8405 | /* |
8406 | =for apidoc sv_catpvf | |
8407 | ||
d5ce4a7c GA |
8408 | Processes its arguments like C<sprintf> and appends the formatted |
8409 | output to an SV. If the appended data contains "wide" characters | |
8410 | (including, but not limited to, SVs with a UTF-8 PV formatted with %s, | |
8411 | and characters >255 formatted with %c), the original SV might get | |
8412 | upgraded to UTF-8. Handles 'get' magic, but not 'set' magic. | |
8413 | C<SvSETMAGIC()> must typically be called after calling this function | |
8414 | to handle 'set' magic. | |
954c1994 | 8415 | |
d5ce4a7c | 8416 | =cut */ |
954c1994 | 8417 | |
46fc3d4c | 8418 | void |
864dbfa3 | 8419 | Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 8420 | { |
8421 | va_list args; | |
46fc3d4c | 8422 | va_start(args, pat); |
c5be433b | 8423 | sv_vcatpvf(sv, pat, &args); |
46fc3d4c | 8424 | va_end(args); |
8425 | } | |
8426 | ||
645c22ef DM |
8427 | /* backend for C<sv_catpvf> and C<catpvf_mg_nocontext> */ |
8428 | ||
ef50df4b | 8429 | void |
c5be433b GS |
8430 | Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args) |
8431 | { | |
8432 | sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
8433 | } | |
8434 | ||
954c1994 GS |
8435 | /* |
8436 | =for apidoc sv_catpvf_mg | |
8437 | ||
8438 | Like C<sv_catpvf>, but also handles 'set' magic. | |
8439 | ||
8440 | =cut | |
8441 | */ | |
8442 | ||
c5be433b | 8443 | void |
864dbfa3 | 8444 | Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
8445 | { |
8446 | va_list args; | |
ef50df4b | 8447 | va_start(args, pat); |
c5be433b | 8448 | sv_vcatpvf_mg(sv, pat, &args); |
ef50df4b | 8449 | va_end(args); |
c5be433b GS |
8450 | } |
8451 | ||
645c22ef DM |
8452 | /* backend for C<catpvf_mg> and C<catpvf_mg_nocontext> */ |
8453 | ||
c5be433b GS |
8454 | void |
8455 | Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
8456 | { | |
8457 | sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
ef50df4b GS |
8458 | SvSETMAGIC(sv); |
8459 | } | |
8460 | ||
954c1994 GS |
8461 | /* |
8462 | =for apidoc sv_vsetpvfn | |
8463 | ||
8464 | Works like C<vcatpvfn> but copies the text into the SV instead of | |
8465 | appending it. | |
8466 | ||
645c22ef DM |
8467 | Usually used via one of its frontends C<sv_setpvf> and C<sv_setpvf_mg>. |
8468 | ||
954c1994 GS |
8469 | =cut |
8470 | */ | |
8471 | ||
46fc3d4c | 8472 | void |
7d5ea4e7 | 8473 | Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 8474 | { |
8475 | sv_setpvn(sv, "", 0); | |
7d5ea4e7 | 8476 | sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted); |
46fc3d4c | 8477 | } |
8478 | ||
645c22ef DM |
8479 | /* private function for use in sv_vcatpvfn via the EXPECT_NUMBER macro */ |
8480 | ||
2d00ba3b | 8481 | STATIC I32 |
9dd79c3f | 8482 | S_expect_number(pTHX_ char** pattern) |
211dfcf1 HS |
8483 | { |
8484 | I32 var = 0; | |
8485 | switch (**pattern) { | |
8486 | case '1': case '2': case '3': | |
8487 | case '4': case '5': case '6': | |
8488 | case '7': case '8': case '9': | |
8489 | while (isDIGIT(**pattern)) | |
8490 | var = var * 10 + (*(*pattern)++ - '0'); | |
8491 | } | |
8492 | return var; | |
8493 | } | |
9dd79c3f | 8494 | #define EXPECT_NUMBER(pattern, var) (var = S_expect_number(aTHX_ &pattern)) |
211dfcf1 | 8495 | |
954c1994 GS |
8496 | /* |
8497 | =for apidoc sv_vcatpvfn | |
8498 | ||
8499 | Processes its arguments like C<vsprintf> and appends the formatted output | |
8500 | to an SV. Uses an array of SVs if the C style variable argument list is | |
8501 | missing (NULL). When running with taint checks enabled, indicates via | |
8502 | C<maybe_tainted> if results are untrustworthy (often due to the use of | |
8503 | locales). | |
8504 | ||
645c22ef DM |
8505 | Usually used via one of its frontends C<sv_catpvf> and C<sv_catpvf_mg>. |
8506 | ||
954c1994 GS |
8507 | =cut |
8508 | */ | |
8509 | ||
46fc3d4c | 8510 | void |
7d5ea4e7 | 8511 | Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 8512 | { |
8513 | char *p; | |
8514 | char *q; | |
8515 | char *patend; | |
fc36a67e | 8516 | STRLEN origlen; |
46fc3d4c | 8517 | I32 svix = 0; |
c635e13b | 8518 | static char nullstr[] = "(null)"; |
9c5ffd7c | 8519 | SV *argsv = Nullsv; |
db79b45b JH |
8520 | bool has_utf8; /* has the result utf8? */ |
8521 | bool pat_utf8; /* the pattern is in utf8? */ | |
8522 | SV *nsv = Nullsv; | |
8523 | ||
8524 | has_utf8 = pat_utf8 = DO_UTF8(sv); | |
46fc3d4c | 8525 | |
8526 | /* no matter what, this is a string now */ | |
fc36a67e | 8527 | (void)SvPV_force(sv, origlen); |
46fc3d4c | 8528 | |
fc36a67e | 8529 | /* special-case "", "%s", and "%_" */ |
46fc3d4c | 8530 | if (patlen == 0) |
8531 | return; | |
fc36a67e | 8532 | if (patlen == 2 && pat[0] == '%') { |
8533 | switch (pat[1]) { | |
8534 | case 's': | |
c635e13b | 8535 | if (args) { |
8536 | char *s = va_arg(*args, char*); | |
8537 | sv_catpv(sv, s ? s : nullstr); | |
8538 | } | |
7e2040f0 | 8539 | else if (svix < svmax) { |
fc36a67e | 8540 | sv_catsv(sv, *svargs); |
7e2040f0 GS |
8541 | if (DO_UTF8(*svargs)) |
8542 | SvUTF8_on(sv); | |
8543 | } | |
fc36a67e | 8544 | return; |
8545 | case '_': | |
8546 | if (args) { | |
7e2040f0 GS |
8547 | argsv = va_arg(*args, SV*); |
8548 | sv_catsv(sv, argsv); | |
8549 | if (DO_UTF8(argsv)) | |
8550 | SvUTF8_on(sv); | |
fc36a67e | 8551 | return; |
8552 | } | |
8553 | /* See comment on '_' below */ | |
8554 | break; | |
8555 | } | |
46fc3d4c | 8556 | } |
8557 | ||
2cf2cfc6 | 8558 | if (!args && svix < svmax && DO_UTF8(*svargs)) |
205f51d8 | 8559 | has_utf8 = TRUE; |
2cf2cfc6 | 8560 | |
46fc3d4c | 8561 | patend = (char*)pat + patlen; |
8562 | for (p = (char*)pat; p < patend; p = q) { | |
8563 | bool alt = FALSE; | |
8564 | bool left = FALSE; | |
b22c7a20 | 8565 | bool vectorize = FALSE; |
211dfcf1 | 8566 | bool vectorarg = FALSE; |
2cf2cfc6 | 8567 | bool vec_utf8 = FALSE; |
46fc3d4c | 8568 | char fill = ' '; |
8569 | char plus = 0; | |
8570 | char intsize = 0; | |
8571 | STRLEN width = 0; | |
fc36a67e | 8572 | STRLEN zeros = 0; |
46fc3d4c | 8573 | bool has_precis = FALSE; |
8574 | STRLEN precis = 0; | |
58e33a90 | 8575 | I32 osvix = svix; |
2cf2cfc6 | 8576 | bool is_utf8 = FALSE; /* is this item utf8? */ |
20f6aaab AS |
8577 | #ifdef HAS_LDBL_SPRINTF_BUG |
8578 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 | 8579 | with sfio - Allen <allens@cpan.org> */ |
20f6aaab AS |
8580 | bool fix_ldbl_sprintf_bug = FALSE; |
8581 | #endif | |
205f51d8 | 8582 | |
46fc3d4c | 8583 | char esignbuf[4]; |
ad391ad9 | 8584 | U8 utf8buf[UTF8_MAXLEN+1]; |
46fc3d4c | 8585 | STRLEN esignlen = 0; |
8586 | ||
8587 | char *eptr = Nullch; | |
fc36a67e | 8588 | STRLEN elen = 0; |
089c015b JH |
8589 | /* Times 4: a decimal digit takes more than 3 binary digits. |
8590 | * NV_DIG: mantissa takes than many decimal digits. | |
8591 | * Plus 32: Playing safe. */ | |
8592 | char ebuf[IV_DIG * 4 + NV_DIG + 32]; | |
205f51d8 | 8593 | /* large enough for "%#.#f" --chip */ |
2d4389e4 | 8594 | /* what about long double NVs? --jhi */ |
b22c7a20 | 8595 | |
81f715da | 8596 | SV *vecsv = Nullsv; |
a05b299f | 8597 | U8 *vecstr = Null(U8*); |
b22c7a20 | 8598 | STRLEN veclen = 0; |
934abaf1 | 8599 | char c = 0; |
46fc3d4c | 8600 | int i; |
9c5ffd7c | 8601 | unsigned base = 0; |
8c8eb53c RB |
8602 | IV iv = 0; |
8603 | UV uv = 0; | |
9e5b023a JH |
8604 | /* we need a long double target in case HAS_LONG_DOUBLE but |
8605 | not USE_LONG_DOUBLE | |
8606 | */ | |
35fff930 | 8607 | #if defined(HAS_LONG_DOUBLE) && LONG_DOUBLESIZE > DOUBLESIZE |
9e5b023a JH |
8608 | long double nv; |
8609 | #else | |
65202027 | 8610 | NV nv; |
9e5b023a | 8611 | #endif |
46fc3d4c | 8612 | STRLEN have; |
8613 | STRLEN need; | |
8614 | STRLEN gap; | |
b22c7a20 GS |
8615 | char *dotstr = "."; |
8616 | STRLEN dotstrlen = 1; | |
211dfcf1 | 8617 | I32 efix = 0; /* explicit format parameter index */ |
eb3fce90 | 8618 | I32 ewix = 0; /* explicit width index */ |
211dfcf1 HS |
8619 | I32 epix = 0; /* explicit precision index */ |
8620 | I32 evix = 0; /* explicit vector index */ | |
eb3fce90 | 8621 | bool asterisk = FALSE; |
46fc3d4c | 8622 | |
211dfcf1 | 8623 | /* echo everything up to the next format specification */ |
46fc3d4c | 8624 | for (q = p; q < patend && *q != '%'; ++q) ; |
8625 | if (q > p) { | |
db79b45b JH |
8626 | if (has_utf8 && !pat_utf8) |
8627 | sv_catpvn_utf8_upgrade(sv, p, q - p, nsv); | |
8628 | else | |
8629 | sv_catpvn(sv, p, q - p); | |
46fc3d4c | 8630 | p = q; |
8631 | } | |
8632 | if (q++ >= patend) | |
8633 | break; | |
8634 | ||
211dfcf1 HS |
8635 | /* |
8636 | We allow format specification elements in this order: | |
8637 | \d+\$ explicit format parameter index | |
8638 | [-+ 0#]+ flags | |
a472f209 | 8639 | v|\*(\d+\$)?v vector with optional (optionally specified) arg |
f3583277 | 8640 | 0 flag (as above): repeated to allow "v02" |
211dfcf1 HS |
8641 | \d+|\*(\d+\$)? width using optional (optionally specified) arg |
8642 | \.(\d*|\*(\d+\$)?) precision using optional (optionally specified) arg | |
8643 | [hlqLV] size | |
8644 | [%bcdefginopsux_DFOUX] format (mandatory) | |
8645 | */ | |
8646 | if (EXPECT_NUMBER(q, width)) { | |
8647 | if (*q == '$') { | |
8648 | ++q; | |
8649 | efix = width; | |
8650 | } else { | |
8651 | goto gotwidth; | |
8652 | } | |
8653 | } | |
8654 | ||
fc36a67e | 8655 | /* FLAGS */ |
8656 | ||
46fc3d4c | 8657 | while (*q) { |
8658 | switch (*q) { | |
8659 | case ' ': | |
8660 | case '+': | |
8661 | plus = *q++; | |
8662 | continue; | |
8663 | ||
8664 | case '-': | |
8665 | left = TRUE; | |
8666 | q++; | |
8667 | continue; | |
8668 | ||
8669 | case '0': | |
8670 | fill = *q++; | |
8671 | continue; | |
8672 | ||
8673 | case '#': | |
8674 | alt = TRUE; | |
8675 | q++; | |
8676 | continue; | |
8677 | ||
fc36a67e | 8678 | default: |
8679 | break; | |
8680 | } | |
8681 | break; | |
8682 | } | |
46fc3d4c | 8683 | |
211dfcf1 | 8684 | tryasterisk: |
eb3fce90 | 8685 | if (*q == '*') { |
211dfcf1 HS |
8686 | q++; |
8687 | if (EXPECT_NUMBER(q, ewix)) | |
8688 | if (*q++ != '$') | |
8689 | goto unknown; | |
eb3fce90 | 8690 | asterisk = TRUE; |
211dfcf1 HS |
8691 | } |
8692 | if (*q == 'v') { | |
eb3fce90 | 8693 | q++; |
211dfcf1 HS |
8694 | if (vectorize) |
8695 | goto unknown; | |
9cbac4c7 | 8696 | if ((vectorarg = asterisk)) { |
211dfcf1 HS |
8697 | evix = ewix; |
8698 | ewix = 0; | |
8699 | asterisk = FALSE; | |
8700 | } | |
8701 | vectorize = TRUE; | |
8702 | goto tryasterisk; | |
eb3fce90 JH |
8703 | } |
8704 | ||
211dfcf1 | 8705 | if (!asterisk) |
f3583277 RB |
8706 | if( *q == '0' ) |
8707 | fill = *q++; | |
211dfcf1 HS |
8708 | EXPECT_NUMBER(q, width); |
8709 | ||
8710 | if (vectorize) { | |
8711 | if (vectorarg) { | |
8712 | if (args) | |
8713 | vecsv = va_arg(*args, SV*); | |
8714 | else | |
8715 | vecsv = (evix ? evix <= svmax : svix < svmax) ? | |
3a7a539e | 8716 | svargs[evix ? evix-1 : svix++] : &PL_sv_undef; |
4459522c | 8717 | dotstr = SvPVx(vecsv, dotstrlen); |
211dfcf1 | 8718 | if (DO_UTF8(vecsv)) |
2cf2cfc6 | 8719 | is_utf8 = TRUE; |
211dfcf1 HS |
8720 | } |
8721 | if (args) { | |
8722 | vecsv = va_arg(*args, SV*); | |
8723 | vecstr = (U8*)SvPVx(vecsv,veclen); | |
2cf2cfc6 | 8724 | vec_utf8 = DO_UTF8(vecsv); |
eb3fce90 | 8725 | } |
211dfcf1 HS |
8726 | else if (efix ? efix <= svmax : svix < svmax) { |
8727 | vecsv = svargs[efix ? efix-1 : svix++]; | |
8728 | vecstr = (U8*)SvPVx(vecsv,veclen); | |
2cf2cfc6 | 8729 | vec_utf8 = DO_UTF8(vecsv); |
211dfcf1 HS |
8730 | } |
8731 | else { | |
8732 | vecstr = (U8*)""; | |
8733 | veclen = 0; | |
8734 | } | |
eb3fce90 | 8735 | } |
fc36a67e | 8736 | |
eb3fce90 | 8737 | if (asterisk) { |
fc36a67e | 8738 | if (args) |
8739 | i = va_arg(*args, int); | |
8740 | else | |
eb3fce90 JH |
8741 | i = (ewix ? ewix <= svmax : svix < svmax) ? |
8742 | SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 8743 | left |= (i < 0); |
8744 | width = (i < 0) ? -i : i; | |
fc36a67e | 8745 | } |
211dfcf1 | 8746 | gotwidth: |
fc36a67e | 8747 | |
8748 | /* PRECISION */ | |
46fc3d4c | 8749 | |
fc36a67e | 8750 | if (*q == '.') { |
8751 | q++; | |
8752 | if (*q == '*') { | |
211dfcf1 | 8753 | q++; |
7b8dd722 HS |
8754 | if (EXPECT_NUMBER(q, epix) && *q++ != '$') |
8755 | goto unknown; | |
8756 | /* XXX: todo, support specified precision parameter */ | |
8757 | if (epix) | |
211dfcf1 | 8758 | goto unknown; |
46fc3d4c | 8759 | if (args) |
8760 | i = va_arg(*args, int); | |
8761 | else | |
eb3fce90 JH |
8762 | i = (ewix ? ewix <= svmax : svix < svmax) |
8763 | ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 8764 | precis = (i < 0) ? 0 : i; |
fc36a67e | 8765 | } |
8766 | else { | |
8767 | precis = 0; | |
8768 | while (isDIGIT(*q)) | |
8769 | precis = precis * 10 + (*q++ - '0'); | |
8770 | } | |
8771 | has_precis = TRUE; | |
8772 | } | |
46fc3d4c | 8773 | |
fc36a67e | 8774 | /* SIZE */ |
46fc3d4c | 8775 | |
fc36a67e | 8776 | switch (*q) { |
c623ac67 GS |
8777 | #ifdef WIN32 |
8778 | case 'I': /* Ix, I32x, and I64x */ | |
8779 | # ifdef WIN64 | |
8780 | if (q[1] == '6' && q[2] == '4') { | |
8781 | q += 3; | |
8782 | intsize = 'q'; | |
8783 | break; | |
8784 | } | |
8785 | # endif | |
8786 | if (q[1] == '3' && q[2] == '2') { | |
8787 | q += 3; | |
8788 | break; | |
8789 | } | |
8790 | # ifdef WIN64 | |
8791 | intsize = 'q'; | |
8792 | # endif | |
8793 | q++; | |
8794 | break; | |
8795 | #endif | |
9e5b023a | 8796 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
6f9bb7fd | 8797 | case 'L': /* Ld */ |
e5c81feb | 8798 | /* FALL THROUGH */ |
e5c81feb | 8799 | #ifdef HAS_QUAD |
6f9bb7fd | 8800 | case 'q': /* qd */ |
9e5b023a | 8801 | #endif |
6f9bb7fd GS |
8802 | intsize = 'q'; |
8803 | q++; | |
8804 | break; | |
8805 | #endif | |
fc36a67e | 8806 | case 'l': |
9e5b023a | 8807 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
205f51d8 | 8808 | if (*(q + 1) == 'l') { /* lld, llf */ |
fc36a67e | 8809 | intsize = 'q'; |
8810 | q += 2; | |
46fc3d4c | 8811 | break; |
cf2093f6 | 8812 | } |
fc36a67e | 8813 | #endif |
6f9bb7fd | 8814 | /* FALL THROUGH */ |
fc36a67e | 8815 | case 'h': |
cf2093f6 | 8816 | /* FALL THROUGH */ |
fc36a67e | 8817 | case 'V': |
8818 | intsize = *q++; | |
46fc3d4c | 8819 | break; |
8820 | } | |
8821 | ||
fc36a67e | 8822 | /* CONVERSION */ |
8823 | ||
211dfcf1 HS |
8824 | if (*q == '%') { |
8825 | eptr = q++; | |
8826 | elen = 1; | |
8827 | goto string; | |
8828 | } | |
8829 | ||
be75b157 HS |
8830 | if (vectorize) |
8831 | argsv = vecsv; | |
8832 | else if (!args) | |
211dfcf1 HS |
8833 | argsv = (efix ? efix <= svmax : svix < svmax) ? |
8834 | svargs[efix ? efix-1 : svix++] : &PL_sv_undef; | |
8835 | ||
46fc3d4c | 8836 | switch (c = *q++) { |
8837 | ||
8838 | /* STRINGS */ | |
8839 | ||
46fc3d4c | 8840 | case 'c': |
be75b157 | 8841 | uv = (args && !vectorize) ? va_arg(*args, int) : SvIVx(argsv); |
1bd104fb JH |
8842 | if ((uv > 255 || |
8843 | (!UNI_IS_INVARIANT(uv) && SvUTF8(sv))) | |
0064a8a9 | 8844 | && !IN_BYTES) { |
dfe13c55 | 8845 | eptr = (char*)utf8buf; |
9041c2e3 | 8846 | elen = uvchr_to_utf8((U8*)eptr, uv) - utf8buf; |
2cf2cfc6 | 8847 | is_utf8 = TRUE; |
7e2040f0 GS |
8848 | } |
8849 | else { | |
8850 | c = (char)uv; | |
8851 | eptr = &c; | |
8852 | elen = 1; | |
a0ed51b3 | 8853 | } |
46fc3d4c | 8854 | goto string; |
8855 | ||
46fc3d4c | 8856 | case 's': |
be75b157 | 8857 | if (args && !vectorize) { |
fc36a67e | 8858 | eptr = va_arg(*args, char*); |
c635e13b | 8859 | if (eptr) |
1d7c1841 GS |
8860 | #ifdef MACOS_TRADITIONAL |
8861 | /* On MacOS, %#s format is used for Pascal strings */ | |
8862 | if (alt) | |
8863 | elen = *eptr++; | |
8864 | else | |
8865 | #endif | |
c635e13b | 8866 | elen = strlen(eptr); |
8867 | else { | |
8868 | eptr = nullstr; | |
8869 | elen = sizeof nullstr - 1; | |
8870 | } | |
46fc3d4c | 8871 | } |
211dfcf1 | 8872 | else { |
7e2040f0 GS |
8873 | eptr = SvPVx(argsv, elen); |
8874 | if (DO_UTF8(argsv)) { | |
a0ed51b3 LW |
8875 | if (has_precis && precis < elen) { |
8876 | I32 p = precis; | |
7e2040f0 | 8877 | sv_pos_u2b(argsv, &p, 0); /* sticks at end */ |
a0ed51b3 LW |
8878 | precis = p; |
8879 | } | |
8880 | if (width) { /* fudge width (can't fudge elen) */ | |
7e2040f0 | 8881 | width += elen - sv_len_utf8(argsv); |
a0ed51b3 | 8882 | } |
2cf2cfc6 | 8883 | is_utf8 = TRUE; |
a0ed51b3 LW |
8884 | } |
8885 | } | |
46fc3d4c | 8886 | goto string; |
8887 | ||
fc36a67e | 8888 | case '_': |
8889 | /* | |
8890 | * The "%_" hack might have to be changed someday, | |
8891 | * if ISO or ANSI decide to use '_' for something. | |
8892 | * So we keep it hidden from users' code. | |
8893 | */ | |
be75b157 | 8894 | if (!args || vectorize) |
fc36a67e | 8895 | goto unknown; |
211dfcf1 | 8896 | argsv = va_arg(*args, SV*); |
7e2040f0 GS |
8897 | eptr = SvPVx(argsv, elen); |
8898 | if (DO_UTF8(argsv)) | |
2cf2cfc6 | 8899 | is_utf8 = TRUE; |
fc36a67e | 8900 | |
46fc3d4c | 8901 | string: |
b22c7a20 | 8902 | vectorize = FALSE; |
46fc3d4c | 8903 | if (has_precis && elen > precis) |
8904 | elen = precis; | |
8905 | break; | |
8906 | ||
8907 | /* INTEGERS */ | |
8908 | ||
fc36a67e | 8909 | case 'p': |
be75b157 | 8910 | if (alt || vectorize) |
c2e66d9e | 8911 | goto unknown; |
211dfcf1 | 8912 | uv = PTR2UV(args ? va_arg(*args, void*) : argsv); |
fc36a67e | 8913 | base = 16; |
8914 | goto integer; | |
8915 | ||
46fc3d4c | 8916 | case 'D': |
29fe7a80 | 8917 | #ifdef IV_IS_QUAD |
22f3ae8c | 8918 | intsize = 'q'; |
29fe7a80 | 8919 | #else |
46fc3d4c | 8920 | intsize = 'l'; |
29fe7a80 | 8921 | #endif |
46fc3d4c | 8922 | /* FALL THROUGH */ |
8923 | case 'd': | |
8924 | case 'i': | |
b22c7a20 | 8925 | if (vectorize) { |
ba210ebe | 8926 | STRLEN ulen; |
211dfcf1 HS |
8927 | if (!veclen) |
8928 | continue; | |
2cf2cfc6 A |
8929 | if (vec_utf8) |
8930 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
8931 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 8932 | else { |
e83d50c9 | 8933 | uv = *vecstr; |
b22c7a20 GS |
8934 | ulen = 1; |
8935 | } | |
8936 | vecstr += ulen; | |
8937 | veclen -= ulen; | |
e83d50c9 JP |
8938 | if (plus) |
8939 | esignbuf[esignlen++] = plus; | |
b22c7a20 GS |
8940 | } |
8941 | else if (args) { | |
46fc3d4c | 8942 | switch (intsize) { |
8943 | case 'h': iv = (short)va_arg(*args, int); break; | |
8944 | default: iv = va_arg(*args, int); break; | |
8945 | case 'l': iv = va_arg(*args, long); break; | |
fc36a67e | 8946 | case 'V': iv = va_arg(*args, IV); break; |
cf2093f6 JH |
8947 | #ifdef HAS_QUAD |
8948 | case 'q': iv = va_arg(*args, Quad_t); break; | |
8949 | #endif | |
46fc3d4c | 8950 | } |
8951 | } | |
8952 | else { | |
211dfcf1 | 8953 | iv = SvIVx(argsv); |
46fc3d4c | 8954 | switch (intsize) { |
8955 | case 'h': iv = (short)iv; break; | |
be28567c | 8956 | default: break; |
46fc3d4c | 8957 | case 'l': iv = (long)iv; break; |
fc36a67e | 8958 | case 'V': break; |
cf2093f6 JH |
8959 | #ifdef HAS_QUAD |
8960 | case 'q': iv = (Quad_t)iv; break; | |
8961 | #endif | |
46fc3d4c | 8962 | } |
8963 | } | |
e83d50c9 JP |
8964 | if ( !vectorize ) /* we already set uv above */ |
8965 | { | |
8966 | if (iv >= 0) { | |
8967 | uv = iv; | |
8968 | if (plus) | |
8969 | esignbuf[esignlen++] = plus; | |
8970 | } | |
8971 | else { | |
8972 | uv = -iv; | |
8973 | esignbuf[esignlen++] = '-'; | |
8974 | } | |
46fc3d4c | 8975 | } |
8976 | base = 10; | |
8977 | goto integer; | |
8978 | ||
fc36a67e | 8979 | case 'U': |
29fe7a80 | 8980 | #ifdef IV_IS_QUAD |
22f3ae8c | 8981 | intsize = 'q'; |
29fe7a80 | 8982 | #else |
fc36a67e | 8983 | intsize = 'l'; |
29fe7a80 | 8984 | #endif |
fc36a67e | 8985 | /* FALL THROUGH */ |
8986 | case 'u': | |
8987 | base = 10; | |
8988 | goto uns_integer; | |
8989 | ||
4f19785b WSI |
8990 | case 'b': |
8991 | base = 2; | |
8992 | goto uns_integer; | |
8993 | ||
46fc3d4c | 8994 | case 'O': |
29fe7a80 | 8995 | #ifdef IV_IS_QUAD |
22f3ae8c | 8996 | intsize = 'q'; |
29fe7a80 | 8997 | #else |
46fc3d4c | 8998 | intsize = 'l'; |
29fe7a80 | 8999 | #endif |
46fc3d4c | 9000 | /* FALL THROUGH */ |
9001 | case 'o': | |
9002 | base = 8; | |
9003 | goto uns_integer; | |
9004 | ||
9005 | case 'X': | |
46fc3d4c | 9006 | case 'x': |
9007 | base = 16; | |
46fc3d4c | 9008 | |
9009 | uns_integer: | |
b22c7a20 | 9010 | if (vectorize) { |
ba210ebe | 9011 | STRLEN ulen; |
b22c7a20 | 9012 | vector: |
211dfcf1 HS |
9013 | if (!veclen) |
9014 | continue; | |
2cf2cfc6 A |
9015 | if (vec_utf8) |
9016 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
9017 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 9018 | else { |
a05b299f | 9019 | uv = *vecstr; |
b22c7a20 GS |
9020 | ulen = 1; |
9021 | } | |
9022 | vecstr += ulen; | |
9023 | veclen -= ulen; | |
9024 | } | |
9025 | else if (args) { | |
46fc3d4c | 9026 | switch (intsize) { |
9027 | case 'h': uv = (unsigned short)va_arg(*args, unsigned); break; | |
9028 | default: uv = va_arg(*args, unsigned); break; | |
9029 | case 'l': uv = va_arg(*args, unsigned long); break; | |
fc36a67e | 9030 | case 'V': uv = va_arg(*args, UV); break; |
cf2093f6 JH |
9031 | #ifdef HAS_QUAD |
9032 | case 'q': uv = va_arg(*args, Quad_t); break; | |
9033 | #endif | |
46fc3d4c | 9034 | } |
9035 | } | |
9036 | else { | |
211dfcf1 | 9037 | uv = SvUVx(argsv); |
46fc3d4c | 9038 | switch (intsize) { |
9039 | case 'h': uv = (unsigned short)uv; break; | |
be28567c | 9040 | default: break; |
46fc3d4c | 9041 | case 'l': uv = (unsigned long)uv; break; |
fc36a67e | 9042 | case 'V': break; |
cf2093f6 JH |
9043 | #ifdef HAS_QUAD |
9044 | case 'q': uv = (Quad_t)uv; break; | |
9045 | #endif | |
46fc3d4c | 9046 | } |
9047 | } | |
9048 | ||
9049 | integer: | |
46fc3d4c | 9050 | eptr = ebuf + sizeof ebuf; |
fc36a67e | 9051 | switch (base) { |
9052 | unsigned dig; | |
9053 | case 16: | |
c10ed8b9 HS |
9054 | if (!uv) |
9055 | alt = FALSE; | |
1d7c1841 GS |
9056 | p = (char*)((c == 'X') |
9057 | ? "0123456789ABCDEF" : "0123456789abcdef"); | |
fc36a67e | 9058 | do { |
9059 | dig = uv & 15; | |
9060 | *--eptr = p[dig]; | |
9061 | } while (uv >>= 4); | |
9062 | if (alt) { | |
46fc3d4c | 9063 | esignbuf[esignlen++] = '0'; |
fc36a67e | 9064 | esignbuf[esignlen++] = c; /* 'x' or 'X' */ |
46fc3d4c | 9065 | } |
fc36a67e | 9066 | break; |
9067 | case 8: | |
9068 | do { | |
9069 | dig = uv & 7; | |
9070 | *--eptr = '0' + dig; | |
9071 | } while (uv >>= 3); | |
9072 | if (alt && *eptr != '0') | |
9073 | *--eptr = '0'; | |
9074 | break; | |
4f19785b WSI |
9075 | case 2: |
9076 | do { | |
9077 | dig = uv & 1; | |
9078 | *--eptr = '0' + dig; | |
9079 | } while (uv >>= 1); | |
eda88b6d JH |
9080 | if (alt) { |
9081 | esignbuf[esignlen++] = '0'; | |
7481bb52 | 9082 | esignbuf[esignlen++] = 'b'; |
eda88b6d | 9083 | } |
4f19785b | 9084 | break; |
fc36a67e | 9085 | default: /* it had better be ten or less */ |
6bc102ca | 9086 | #if defined(PERL_Y2KWARN) |
e476b1b5 | 9087 | if (ckWARN(WARN_Y2K)) { |
6bc102ca GS |
9088 | STRLEN n; |
9089 | char *s = SvPV(sv,n); | |
9090 | if (n >= 2 && s[n-2] == '1' && s[n-1] == '9' | |
9091 | && (n == 2 || !isDIGIT(s[n-3]))) | |
9092 | { | |
9014280d | 9093 | Perl_warner(aTHX_ packWARN(WARN_Y2K), |
6bc102ca GS |
9094 | "Possible Y2K bug: %%%c %s", |
9095 | c, "format string following '19'"); | |
9096 | } | |
9097 | } | |
9098 | #endif | |
fc36a67e | 9099 | do { |
9100 | dig = uv % base; | |
9101 | *--eptr = '0' + dig; | |
9102 | } while (uv /= base); | |
9103 | break; | |
46fc3d4c | 9104 | } |
9105 | elen = (ebuf + sizeof ebuf) - eptr; | |
c10ed8b9 HS |
9106 | if (has_precis) { |
9107 | if (precis > elen) | |
9108 | zeros = precis - elen; | |
9109 | else if (precis == 0 && elen == 1 && *eptr == '0') | |
9110 | elen = 0; | |
9111 | } | |
46fc3d4c | 9112 | break; |
9113 | ||
9114 | /* FLOATING POINT */ | |
9115 | ||
fc36a67e | 9116 | case 'F': |
9117 | c = 'f'; /* maybe %F isn't supported here */ | |
9118 | /* FALL THROUGH */ | |
46fc3d4c | 9119 | case 'e': case 'E': |
fc36a67e | 9120 | case 'f': |
46fc3d4c | 9121 | case 'g': case 'G': |
9122 | ||
9123 | /* This is evil, but floating point is even more evil */ | |
9124 | ||
9e5b023a JH |
9125 | /* for SV-style calling, we can only get NV |
9126 | for C-style calling, we assume %f is double; | |
9127 | for simplicity we allow any of %Lf, %llf, %qf for long double | |
9128 | */ | |
9129 | switch (intsize) { | |
9130 | case 'V': | |
9131 | #if defined(USE_LONG_DOUBLE) | |
9132 | intsize = 'q'; | |
9133 | #endif | |
9134 | break; | |
8a2e3f14 | 9135 | /* [perl #20339] - we should accept and ignore %lf rather than die */ |
00e17364 HS |
9136 | case 'l': |
9137 | /* FALL THROUGH */ | |
9e5b023a JH |
9138 | default: |
9139 | #if defined(USE_LONG_DOUBLE) | |
9140 | intsize = args ? 0 : 'q'; | |
9141 | #endif | |
9142 | break; | |
9143 | case 'q': | |
9144 | #if defined(HAS_LONG_DOUBLE) | |
9145 | break; | |
9146 | #else | |
9147 | /* FALL THROUGH */ | |
9148 | #endif | |
9149 | case 'h': | |
9e5b023a JH |
9150 | goto unknown; |
9151 | } | |
9152 | ||
9153 | /* now we need (long double) if intsize == 'q', else (double) */ | |
be75b157 | 9154 | nv = (args && !vectorize) ? |
35fff930 JH |
9155 | #if LONG_DOUBLESIZE > DOUBLESIZE |
9156 | intsize == 'q' ? | |
205f51d8 AS |
9157 | va_arg(*args, long double) : |
9158 | va_arg(*args, double) | |
35fff930 | 9159 | #else |
205f51d8 | 9160 | va_arg(*args, double) |
35fff930 | 9161 | #endif |
9e5b023a | 9162 | : SvNVx(argsv); |
fc36a67e | 9163 | |
9164 | need = 0; | |
be75b157 | 9165 | vectorize = FALSE; |
fc36a67e | 9166 | if (c != 'e' && c != 'E') { |
9167 | i = PERL_INT_MIN; | |
9e5b023a JH |
9168 | /* FIXME: if HAS_LONG_DOUBLE but not USE_LONG_DOUBLE this |
9169 | will cast our (long double) to (double) */ | |
73b309ea | 9170 | (void)Perl_frexp(nv, &i); |
fc36a67e | 9171 | if (i == PERL_INT_MIN) |
cea2e8a9 | 9172 | Perl_die(aTHX_ "panic: frexp"); |
c635e13b | 9173 | if (i > 0) |
fc36a67e | 9174 | need = BIT_DIGITS(i); |
9175 | } | |
9176 | need += has_precis ? precis : 6; /* known default */ | |
20f6aaab | 9177 | |
fc36a67e | 9178 | if (need < width) |
9179 | need = width; | |
9180 | ||
20f6aaab AS |
9181 | #ifdef HAS_LDBL_SPRINTF_BUG |
9182 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 AS |
9183 | with sfio - Allen <allens@cpan.org> */ |
9184 | ||
9185 | # ifdef DBL_MAX | |
9186 | # define MY_DBL_MAX DBL_MAX | |
9187 | # else /* XXX guessing! HUGE_VAL may be defined as infinity, so not using */ | |
9188 | # if DOUBLESIZE >= 8 | |
9189 | # define MY_DBL_MAX 1.7976931348623157E+308L | |
9190 | # else | |
9191 | # define MY_DBL_MAX 3.40282347E+38L | |
9192 | # endif | |
9193 | # endif | |
9194 | ||
9195 | # ifdef HAS_LDBL_SPRINTF_BUG_LESS1 /* only between -1L & 1L - Allen */ | |
9196 | # define MY_DBL_MAX_BUG 1L | |
20f6aaab | 9197 | # else |
205f51d8 | 9198 | # define MY_DBL_MAX_BUG MY_DBL_MAX |
20f6aaab | 9199 | # endif |
20f6aaab | 9200 | |
205f51d8 AS |
9201 | # ifdef DBL_MIN |
9202 | # define MY_DBL_MIN DBL_MIN | |
9203 | # else /* XXX guessing! -Allen */ | |
9204 | # if DOUBLESIZE >= 8 | |
9205 | # define MY_DBL_MIN 2.2250738585072014E-308L | |
9206 | # else | |
9207 | # define MY_DBL_MIN 1.17549435E-38L | |
9208 | # endif | |
9209 | # endif | |
20f6aaab | 9210 | |
205f51d8 AS |
9211 | if ((intsize == 'q') && (c == 'f') && |
9212 | ((nv < MY_DBL_MAX_BUG) && (nv > -MY_DBL_MAX_BUG)) && | |
9213 | (need < DBL_DIG)) { | |
9214 | /* it's going to be short enough that | |
9215 | * long double precision is not needed */ | |
9216 | ||
9217 | if ((nv <= 0L) && (nv >= -0L)) | |
9218 | fix_ldbl_sprintf_bug = TRUE; /* 0 is 0 - easiest */ | |
9219 | else { | |
9220 | /* would use Perl_fp_class as a double-check but not | |
9221 | * functional on IRIX - see perl.h comments */ | |
9222 | ||
9223 | if ((nv >= MY_DBL_MIN) || (nv <= -MY_DBL_MIN)) { | |
9224 | /* It's within the range that a double can represent */ | |
9225 | #if defined(DBL_MAX) && !defined(DBL_MIN) | |
9226 | if ((nv >= ((long double)1/DBL_MAX)) || | |
9227 | (nv <= (-(long double)1/DBL_MAX))) | |
20f6aaab | 9228 | #endif |
205f51d8 | 9229 | fix_ldbl_sprintf_bug = TRUE; |
20f6aaab | 9230 | } |
205f51d8 AS |
9231 | } |
9232 | if (fix_ldbl_sprintf_bug == TRUE) { | |
9233 | double temp; | |
9234 | ||
9235 | intsize = 0; | |
9236 | temp = (double)nv; | |
9237 | nv = (NV)temp; | |
9238 | } | |
20f6aaab | 9239 | } |
205f51d8 AS |
9240 | |
9241 | # undef MY_DBL_MAX | |
9242 | # undef MY_DBL_MAX_BUG | |
9243 | # undef MY_DBL_MIN | |
9244 | ||
20f6aaab AS |
9245 | #endif /* HAS_LDBL_SPRINTF_BUG */ |
9246 | ||
46fc3d4c | 9247 | need += 20; /* fudge factor */ |
80252599 GS |
9248 | if (PL_efloatsize < need) { |
9249 | Safefree(PL_efloatbuf); | |
9250 | PL_efloatsize = need + 20; /* more fudge */ | |
9251 | New(906, PL_efloatbuf, PL_efloatsize, char); | |
7d5ea4e7 | 9252 | PL_efloatbuf[0] = '\0'; |
46fc3d4c | 9253 | } |
9254 | ||
9255 | eptr = ebuf + sizeof ebuf; | |
9256 | *--eptr = '\0'; | |
9257 | *--eptr = c; | |
9e5b023a JH |
9258 | /* FIXME: what to do if HAS_LONG_DOUBLE but not PERL_PRIfldbl? */ |
9259 | #if defined(HAS_LONG_DOUBLE) && defined(PERL_PRIfldbl) | |
9260 | if (intsize == 'q') { | |
e5c81feb JH |
9261 | /* Copy the one or more characters in a long double |
9262 | * format before the 'base' ([efgEFG]) character to | |
9263 | * the format string. */ | |
9264 | static char const prifldbl[] = PERL_PRIfldbl; | |
9265 | char const *p = prifldbl + sizeof(prifldbl) - 3; | |
9266 | while (p >= prifldbl) { *--eptr = *p--; } | |
cf2093f6 | 9267 | } |
65202027 | 9268 | #endif |
46fc3d4c | 9269 | if (has_precis) { |
9270 | base = precis; | |
9271 | do { *--eptr = '0' + (base % 10); } while (base /= 10); | |
9272 | *--eptr = '.'; | |
9273 | } | |
9274 | if (width) { | |
9275 | base = width; | |
9276 | do { *--eptr = '0' + (base % 10); } while (base /= 10); | |
9277 | } | |
9278 | if (fill == '0') | |
9279 | *--eptr = fill; | |
84902520 TB |
9280 | if (left) |
9281 | *--eptr = '-'; | |
46fc3d4c | 9282 | if (plus) |
9283 | *--eptr = plus; | |
9284 | if (alt) | |
9285 | *--eptr = '#'; | |
9286 | *--eptr = '%'; | |
9287 | ||
ff9121f8 JH |
9288 | /* No taint. Otherwise we are in the strange situation |
9289 | * where printf() taints but print($float) doesn't. | |
bda0f7a5 | 9290 | * --jhi */ |
9e5b023a JH |
9291 | #if defined(HAS_LONG_DOUBLE) |
9292 | if (intsize == 'q') | |
9293 | (void)sprintf(PL_efloatbuf, eptr, nv); | |
9294 | else | |
9295 | (void)sprintf(PL_efloatbuf, eptr, (double)nv); | |
9296 | #else | |
dd8482fc | 9297 | (void)sprintf(PL_efloatbuf, eptr, nv); |
9e5b023a | 9298 | #endif |
80252599 GS |
9299 | eptr = PL_efloatbuf; |
9300 | elen = strlen(PL_efloatbuf); | |
46fc3d4c | 9301 | break; |
9302 | ||
fc36a67e | 9303 | /* SPECIAL */ |
9304 | ||
9305 | case 'n': | |
9306 | i = SvCUR(sv) - origlen; | |
be75b157 | 9307 | if (args && !vectorize) { |
c635e13b | 9308 | switch (intsize) { |
9309 | case 'h': *(va_arg(*args, short*)) = i; break; | |
9310 | default: *(va_arg(*args, int*)) = i; break; | |
9311 | case 'l': *(va_arg(*args, long*)) = i; break; | |
9312 | case 'V': *(va_arg(*args, IV*)) = i; break; | |
cf2093f6 JH |
9313 | #ifdef HAS_QUAD |
9314 | case 'q': *(va_arg(*args, Quad_t*)) = i; break; | |
9315 | #endif | |
c635e13b | 9316 | } |
fc36a67e | 9317 | } |
9dd79c3f | 9318 | else |
211dfcf1 | 9319 | sv_setuv_mg(argsv, (UV)i); |
be75b157 | 9320 | vectorize = FALSE; |
fc36a67e | 9321 | continue; /* not "break" */ |
9322 | ||
9323 | /* UNKNOWN */ | |
9324 | ||
46fc3d4c | 9325 | default: |
fc36a67e | 9326 | unknown: |
599cee73 | 9327 | if (!args && ckWARN(WARN_PRINTF) && |
533c011a | 9328 | (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) { |
c635e13b | 9329 | SV *msg = sv_newmortal(); |
35c1215d NC |
9330 | Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %sprintf: ", |
9331 | (PL_op->op_type == OP_PRTF) ? "" : "s"); | |
0f4b6630 | 9332 | if (c) { |
0f4b6630 | 9333 | if (isPRINT(c)) |
1c846c1f | 9334 | Perl_sv_catpvf(aTHX_ msg, |
0f4b6630 JH |
9335 | "\"%%%c\"", c & 0xFF); |
9336 | else | |
9337 | Perl_sv_catpvf(aTHX_ msg, | |
57def98f | 9338 | "\"%%\\%03"UVof"\"", |
0f4b6630 | 9339 | (UV)c & 0xFF); |
0f4b6630 | 9340 | } else |
c635e13b | 9341 | sv_catpv(msg, "end of string"); |
9014280d | 9342 | Perl_warner(aTHX_ packWARN(WARN_PRINTF), "%"SVf, msg); /* yes, this is reentrant */ |
c635e13b | 9343 | } |
fb73857a | 9344 | |
9345 | /* output mangled stuff ... */ | |
9346 | if (c == '\0') | |
9347 | --q; | |
46fc3d4c | 9348 | eptr = p; |
9349 | elen = q - p; | |
fb73857a | 9350 | |
9351 | /* ... right here, because formatting flags should not apply */ | |
9352 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
9353 | p = SvEND(sv); | |
4459522c | 9354 | Copy(eptr, p, elen, char); |
fb73857a | 9355 | p += elen; |
9356 | *p = '\0'; | |
9357 | SvCUR(sv) = p - SvPVX(sv); | |
58e33a90 | 9358 | svix = osvix; |
fb73857a | 9359 | continue; /* not "break" */ |
46fc3d4c | 9360 | } |
9361 | ||
d2876be5 JH |
9362 | if (is_utf8 != has_utf8) { |
9363 | if (is_utf8) { | |
9364 | if (SvCUR(sv)) | |
9365 | sv_utf8_upgrade(sv); | |
9366 | } | |
9367 | else { | |
9368 | SV *nsv = sv_2mortal(newSVpvn(eptr, elen)); | |
9369 | sv_utf8_upgrade(nsv); | |
9370 | eptr = SvPVX(nsv); | |
9371 | elen = SvCUR(nsv); | |
9372 | } | |
9373 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
9374 | p = SvEND(sv); | |
9375 | *p = '\0'; | |
9376 | } | |
94330da2 MHM |
9377 | /* Use memchr() instead of strchr(), as eptr is not guaranteed */ |
9378 | /* to point to a null-terminated string. */ | |
9379 | if (left && ckWARN(WARN_PRINTF) && memchr(eptr, '\n', elen) && | |
dca6e23f RB |
9380 | (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) |
9381 | Perl_warner(aTHX_ packWARN(WARN_PRINTF), | |
9382 | "Newline in left-justified string for %sprintf", | |
9383 | (PL_op->op_type == OP_PRTF) ? "" : "s"); | |
d2876be5 | 9384 | |
fc36a67e | 9385 | have = esignlen + zeros + elen; |
46fc3d4c | 9386 | need = (have > width ? have : width); |
9387 | gap = need - have; | |
9388 | ||
b22c7a20 | 9389 | SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1); |
46fc3d4c | 9390 | p = SvEND(sv); |
9391 | if (esignlen && fill == '0') { | |
eb160463 | 9392 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 9393 | *p++ = esignbuf[i]; |
9394 | } | |
9395 | if (gap && !left) { | |
9396 | memset(p, fill, gap); | |
9397 | p += gap; | |
9398 | } | |
9399 | if (esignlen && fill != '0') { | |
eb160463 | 9400 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 9401 | *p++ = esignbuf[i]; |
9402 | } | |
fc36a67e | 9403 | if (zeros) { |
9404 | for (i = zeros; i; i--) | |
9405 | *p++ = '0'; | |
9406 | } | |
46fc3d4c | 9407 | if (elen) { |
4459522c | 9408 | Copy(eptr, p, elen, char); |
46fc3d4c | 9409 | p += elen; |
9410 | } | |
9411 | if (gap && left) { | |
9412 | memset(p, ' ', gap); | |
9413 | p += gap; | |
9414 | } | |
b22c7a20 GS |
9415 | if (vectorize) { |
9416 | if (veclen) { | |
4459522c | 9417 | Copy(dotstr, p, dotstrlen, char); |
b22c7a20 GS |
9418 | p += dotstrlen; |
9419 | } | |
9420 | else | |
9421 | vectorize = FALSE; /* done iterating over vecstr */ | |
9422 | } | |
2cf2cfc6 A |
9423 | if (is_utf8) |
9424 | has_utf8 = TRUE; | |
9425 | if (has_utf8) | |
7e2040f0 | 9426 | SvUTF8_on(sv); |
46fc3d4c | 9427 | *p = '\0'; |
9428 | SvCUR(sv) = p - SvPVX(sv); | |
b22c7a20 GS |
9429 | if (vectorize) { |
9430 | esignlen = 0; | |
9431 | goto vector; | |
9432 | } | |
46fc3d4c | 9433 | } |
9434 | } | |
51371543 | 9435 | |
645c22ef DM |
9436 | /* ========================================================================= |
9437 | ||
9438 | =head1 Cloning an interpreter | |
9439 | ||
9440 | All the macros and functions in this section are for the private use of | |
9441 | the main function, perl_clone(). | |
9442 | ||
9443 | The foo_dup() functions make an exact copy of an existing foo thinngy. | |
9444 | During the course of a cloning, a hash table is used to map old addresses | |
9445 | to new addresses. The table is created and manipulated with the | |
9446 | ptr_table_* functions. | |
9447 | ||
9448 | =cut | |
9449 | ||
9450 | ============================================================================*/ | |
9451 | ||
9452 | ||
1d7c1841 GS |
9453 | #if defined(USE_ITHREADS) |
9454 | ||
1d7c1841 GS |
9455 | #ifndef GpREFCNT_inc |
9456 | # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL) | |
9457 | #endif | |
9458 | ||
9459 | ||
d2d73c3e AB |
9460 | #define sv_dup_inc(s,t) SvREFCNT_inc(sv_dup(s,t)) |
9461 | #define av_dup(s,t) (AV*)sv_dup((SV*)s,t) | |
9462 | #define av_dup_inc(s,t) (AV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9463 | #define hv_dup(s,t) (HV*)sv_dup((SV*)s,t) | |
9464 | #define hv_dup_inc(s,t) (HV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9465 | #define cv_dup(s,t) (CV*)sv_dup((SV*)s,t) | |
9466 | #define cv_dup_inc(s,t) (CV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9467 | #define io_dup(s,t) (IO*)sv_dup((SV*)s,t) | |
9468 | #define io_dup_inc(s,t) (IO*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9469 | #define gv_dup(s,t) (GV*)sv_dup((SV*)s,t) | |
9470 | #define gv_dup_inc(s,t) (GV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
1d7c1841 GS |
9471 | #define SAVEPV(p) (p ? savepv(p) : Nullch) |
9472 | #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch) | |
8cf8f3d1 | 9473 | |
d2d73c3e | 9474 | |
d2f185dc AMS |
9475 | /* Duplicate a regexp. Required reading: pregcomp() and pregfree() in |
9476 | regcomp.c. AMS 20010712 */ | |
645c22ef | 9477 | |
1d7c1841 | 9478 | REGEXP * |
a8fc9800 | 9479 | Perl_re_dup(pTHX_ REGEXP *r, CLONE_PARAMS *param) |
1d7c1841 | 9480 | { |
d2f185dc AMS |
9481 | REGEXP *ret; |
9482 | int i, len, npar; | |
9483 | struct reg_substr_datum *s; | |
9484 | ||
9485 | if (!r) | |
9486 | return (REGEXP *)NULL; | |
9487 | ||
9488 | if ((ret = (REGEXP *)ptr_table_fetch(PL_ptr_table, r))) | |
9489 | return ret; | |
9490 | ||
9491 | len = r->offsets[0]; | |
9492 | npar = r->nparens+1; | |
9493 | ||
9494 | Newc(0, ret, sizeof(regexp) + (len+1)*sizeof(regnode), char, regexp); | |
9495 | Copy(r->program, ret->program, len+1, regnode); | |
9496 | ||
9497 | New(0, ret->startp, npar, I32); | |
9498 | Copy(r->startp, ret->startp, npar, I32); | |
9499 | New(0, ret->endp, npar, I32); | |
9500 | Copy(r->startp, ret->startp, npar, I32); | |
9501 | ||
d2f185dc AMS |
9502 | New(0, ret->substrs, 1, struct reg_substr_data); |
9503 | for (s = ret->substrs->data, i = 0; i < 3; i++, s++) { | |
9504 | s->min_offset = r->substrs->data[i].min_offset; | |
9505 | s->max_offset = r->substrs->data[i].max_offset; | |
9506 | s->substr = sv_dup_inc(r->substrs->data[i].substr, param); | |
33b8afdf | 9507 | s->utf8_substr = sv_dup_inc(r->substrs->data[i].utf8_substr, param); |
d2f185dc AMS |
9508 | } |
9509 | ||
70612e96 | 9510 | ret->regstclass = NULL; |
d2f185dc AMS |
9511 | if (r->data) { |
9512 | struct reg_data *d; | |
9513 | int count = r->data->count; | |
9514 | ||
9515 | Newc(0, d, sizeof(struct reg_data) + count*sizeof(void *), | |
9516 | char, struct reg_data); | |
9517 | New(0, d->what, count, U8); | |
9518 | ||
9519 | d->count = count; | |
9520 | for (i = 0; i < count; i++) { | |
9521 | d->what[i] = r->data->what[i]; | |
9522 | switch (d->what[i]) { | |
9523 | case 's': | |
9524 | d->data[i] = sv_dup_inc((SV *)r->data->data[i], param); | |
9525 | break; | |
9526 | case 'p': | |
9527 | d->data[i] = av_dup_inc((AV *)r->data->data[i], param); | |
9528 | break; | |
9529 | case 'f': | |
9530 | /* This is cheating. */ | |
9531 | New(0, d->data[i], 1, struct regnode_charclass_class); | |
9532 | StructCopy(r->data->data[i], d->data[i], | |
9533 | struct regnode_charclass_class); | |
70612e96 | 9534 | ret->regstclass = (regnode*)d->data[i]; |
d2f185dc AMS |
9535 | break; |
9536 | case 'o': | |
33773810 AMS |
9537 | /* Compiled op trees are readonly, and can thus be |
9538 | shared without duplication. */ | |
9b978d73 DM |
9539 | d->data[i] = (void*)OpREFCNT_inc((OP*)r->data->data[i]); |
9540 | break; | |
d2f185dc AMS |
9541 | case 'n': |
9542 | d->data[i] = r->data->data[i]; | |
9543 | break; | |
9544 | } | |
9545 | } | |
9546 | ||
9547 | ret->data = d; | |
9548 | } | |
9549 | else | |
9550 | ret->data = NULL; | |
9551 | ||
9552 | New(0, ret->offsets, 2*len+1, U32); | |
9553 | Copy(r->offsets, ret->offsets, 2*len+1, U32); | |
9554 | ||
9555 | ret->precomp = SAVEPV(r->precomp); | |
d2f185dc AMS |
9556 | ret->refcnt = r->refcnt; |
9557 | ret->minlen = r->minlen; | |
9558 | ret->prelen = r->prelen; | |
9559 | ret->nparens = r->nparens; | |
9560 | ret->lastparen = r->lastparen; | |
9561 | ret->lastcloseparen = r->lastcloseparen; | |
9562 | ret->reganch = r->reganch; | |
9563 | ||
70612e96 RG |
9564 | ret->sublen = r->sublen; |
9565 | ||
9566 | if (RX_MATCH_COPIED(ret)) | |
9567 | ret->subbeg = SAVEPV(r->subbeg); | |
9568 | else | |
9569 | ret->subbeg = Nullch; | |
9a26048b NC |
9570 | #ifdef PERL_COPY_ON_WRITE |
9571 | ret->saved_copy = Nullsv; | |
9572 | #endif | |
70612e96 | 9573 | |
d2f185dc AMS |
9574 | ptr_table_store(PL_ptr_table, r, ret); |
9575 | return ret; | |
1d7c1841 GS |
9576 | } |
9577 | ||
d2d73c3e | 9578 | /* duplicate a file handle */ |
645c22ef | 9579 | |
1d7c1841 | 9580 | PerlIO * |
a8fc9800 | 9581 | Perl_fp_dup(pTHX_ PerlIO *fp, char type, CLONE_PARAMS *param) |
1d7c1841 GS |
9582 | { |
9583 | PerlIO *ret; | |
9584 | if (!fp) | |
9585 | return (PerlIO*)NULL; | |
9586 | ||
9587 | /* look for it in the table first */ | |
9588 | ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp); | |
9589 | if (ret) | |
9590 | return ret; | |
9591 | ||
9592 | /* create anew and remember what it is */ | |
ecdeb87c | 9593 | ret = PerlIO_fdupopen(aTHX_ fp, param, PERLIO_DUP_CLONE); |
1d7c1841 GS |
9594 | ptr_table_store(PL_ptr_table, fp, ret); |
9595 | return ret; | |
9596 | } | |
9597 | ||
645c22ef DM |
9598 | /* duplicate a directory handle */ |
9599 | ||
1d7c1841 GS |
9600 | DIR * |
9601 | Perl_dirp_dup(pTHX_ DIR *dp) | |
9602 | { | |
9603 | if (!dp) | |
9604 | return (DIR*)NULL; | |
9605 | /* XXX TODO */ | |
9606 | return dp; | |
9607 | } | |
9608 | ||
ff276b08 | 9609 | /* duplicate a typeglob */ |
645c22ef | 9610 | |
1d7c1841 | 9611 | GP * |
a8fc9800 | 9612 | Perl_gp_dup(pTHX_ GP *gp, CLONE_PARAMS* param) |
1d7c1841 GS |
9613 | { |
9614 | GP *ret; | |
9615 | if (!gp) | |
9616 | return (GP*)NULL; | |
9617 | /* look for it in the table first */ | |
9618 | ret = (GP*)ptr_table_fetch(PL_ptr_table, gp); | |
9619 | if (ret) | |
9620 | return ret; | |
9621 | ||
9622 | /* create anew and remember what it is */ | |
9623 | Newz(0, ret, 1, GP); | |
9624 | ptr_table_store(PL_ptr_table, gp, ret); | |
9625 | ||
9626 | /* clone */ | |
9627 | ret->gp_refcnt = 0; /* must be before any other dups! */ | |
d2d73c3e AB |
9628 | ret->gp_sv = sv_dup_inc(gp->gp_sv, param); |
9629 | ret->gp_io = io_dup_inc(gp->gp_io, param); | |
9630 | ret->gp_form = cv_dup_inc(gp->gp_form, param); | |
9631 | ret->gp_av = av_dup_inc(gp->gp_av, param); | |
9632 | ret->gp_hv = hv_dup_inc(gp->gp_hv, param); | |
9633 | ret->gp_egv = gv_dup(gp->gp_egv, param);/* GvEGV is not refcounted */ | |
9634 | ret->gp_cv = cv_dup_inc(gp->gp_cv, param); | |
1d7c1841 GS |
9635 | ret->gp_cvgen = gp->gp_cvgen; |
9636 | ret->gp_flags = gp->gp_flags; | |
9637 | ret->gp_line = gp->gp_line; | |
9638 | ret->gp_file = gp->gp_file; /* points to COP.cop_file */ | |
9639 | return ret; | |
9640 | } | |
9641 | ||
645c22ef DM |
9642 | /* duplicate a chain of magic */ |
9643 | ||
1d7c1841 | 9644 | MAGIC * |
a8fc9800 | 9645 | Perl_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS* param) |
1d7c1841 | 9646 | { |
cb359b41 JH |
9647 | MAGIC *mgprev = (MAGIC*)NULL; |
9648 | MAGIC *mgret; | |
1d7c1841 GS |
9649 | if (!mg) |
9650 | return (MAGIC*)NULL; | |
9651 | /* look for it in the table first */ | |
9652 | mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg); | |
9653 | if (mgret) | |
9654 | return mgret; | |
9655 | ||
9656 | for (; mg; mg = mg->mg_moremagic) { | |
9657 | MAGIC *nmg; | |
9658 | Newz(0, nmg, 1, MAGIC); | |
cb359b41 | 9659 | if (mgprev) |
1d7c1841 | 9660 | mgprev->mg_moremagic = nmg; |
cb359b41 JH |
9661 | else |
9662 | mgret = nmg; | |
1d7c1841 GS |
9663 | nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */ |
9664 | nmg->mg_private = mg->mg_private; | |
9665 | nmg->mg_type = mg->mg_type; | |
9666 | nmg->mg_flags = mg->mg_flags; | |
14befaf4 | 9667 | if (mg->mg_type == PERL_MAGIC_qr) { |
d2f185dc | 9668 | nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj, param); |
1d7c1841 | 9669 | } |
05bd4103 JH |
9670 | else if(mg->mg_type == PERL_MAGIC_backref) { |
9671 | AV *av = (AV*) mg->mg_obj; | |
9672 | SV **svp; | |
9673 | I32 i; | |
9674 | nmg->mg_obj = (SV*)newAV(); | |
9675 | svp = AvARRAY(av); | |
9676 | i = AvFILLp(av); | |
9677 | while (i >= 0) { | |
9678 | av_push((AV*)nmg->mg_obj,sv_dup(svp[i],param)); | |
9679 | i--; | |
9680 | } | |
9681 | } | |
1d7c1841 GS |
9682 | else { |
9683 | nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED) | |
d2d73c3e AB |
9684 | ? sv_dup_inc(mg->mg_obj, param) |
9685 | : sv_dup(mg->mg_obj, param); | |
1d7c1841 GS |
9686 | } |
9687 | nmg->mg_len = mg->mg_len; | |
9688 | nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */ | |
14befaf4 | 9689 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
68795e93 | 9690 | if (mg->mg_len > 0) { |
1d7c1841 | 9691 | nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len); |
14befaf4 DM |
9692 | if (mg->mg_type == PERL_MAGIC_overload_table && |
9693 | AMT_AMAGIC((AMT*)mg->mg_ptr)) | |
9694 | { | |
1d7c1841 GS |
9695 | AMT *amtp = (AMT*)mg->mg_ptr; |
9696 | AMT *namtp = (AMT*)nmg->mg_ptr; | |
9697 | I32 i; | |
9698 | for (i = 1; i < NofAMmeth; i++) { | |
d2d73c3e | 9699 | namtp->table[i] = cv_dup_inc(amtp->table[i], param); |
1d7c1841 GS |
9700 | } |
9701 | } | |
9702 | } | |
9703 | else if (mg->mg_len == HEf_SVKEY) | |
d2d73c3e | 9704 | nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr, param); |
1d7c1841 | 9705 | } |
68795e93 NIS |
9706 | if ((mg->mg_flags & MGf_DUP) && mg->mg_virtual && mg->mg_virtual->svt_dup) { |
9707 | CALL_FPTR(nmg->mg_virtual->svt_dup)(aTHX_ nmg, param); | |
9708 | } | |
1d7c1841 GS |
9709 | mgprev = nmg; |
9710 | } | |
9711 | return mgret; | |
9712 | } | |
9713 | ||
645c22ef DM |
9714 | /* create a new pointer-mapping table */ |
9715 | ||
1d7c1841 GS |
9716 | PTR_TBL_t * |
9717 | Perl_ptr_table_new(pTHX) | |
9718 | { | |
9719 | PTR_TBL_t *tbl; | |
9720 | Newz(0, tbl, 1, PTR_TBL_t); | |
9721 | tbl->tbl_max = 511; | |
9722 | tbl->tbl_items = 0; | |
9723 | Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*); | |
9724 | return tbl; | |
9725 | } | |
9726 | ||
645c22ef DM |
9727 | /* map an existing pointer using a table */ |
9728 | ||
1d7c1841 GS |
9729 | void * |
9730 | Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv) | |
9731 | { | |
9732 | PTR_TBL_ENT_t *tblent; | |
d2a79402 | 9733 | UV hash = PTR2UV(sv); |
1d7c1841 GS |
9734 | assert(tbl); |
9735 | tblent = tbl->tbl_ary[hash & tbl->tbl_max]; | |
9736 | for (; tblent; tblent = tblent->next) { | |
9737 | if (tblent->oldval == sv) | |
9738 | return tblent->newval; | |
9739 | } | |
9740 | return (void*)NULL; | |
9741 | } | |
9742 | ||
645c22ef DM |
9743 | /* add a new entry to a pointer-mapping table */ |
9744 | ||
1d7c1841 GS |
9745 | void |
9746 | Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv) | |
9747 | { | |
9748 | PTR_TBL_ENT_t *tblent, **otblent; | |
9749 | /* XXX this may be pessimal on platforms where pointers aren't good | |
9750 | * hash values e.g. if they grow faster in the most significant | |
9751 | * bits */ | |
d2a79402 | 9752 | UV hash = PTR2UV(oldv); |
1d7c1841 GS |
9753 | bool i = 1; |
9754 | ||
9755 | assert(tbl); | |
9756 | otblent = &tbl->tbl_ary[hash & tbl->tbl_max]; | |
9757 | for (tblent = *otblent; tblent; i=0, tblent = tblent->next) { | |
9758 | if (tblent->oldval == oldv) { | |
9759 | tblent->newval = newv; | |
1d7c1841 GS |
9760 | return; |
9761 | } | |
9762 | } | |
9763 | Newz(0, tblent, 1, PTR_TBL_ENT_t); | |
9764 | tblent->oldval = oldv; | |
9765 | tblent->newval = newv; | |
9766 | tblent->next = *otblent; | |
9767 | *otblent = tblent; | |
9768 | tbl->tbl_items++; | |
9769 | if (i && tbl->tbl_items > tbl->tbl_max) | |
9770 | ptr_table_split(tbl); | |
9771 | } | |
9772 | ||
645c22ef DM |
9773 | /* double the hash bucket size of an existing ptr table */ |
9774 | ||
1d7c1841 GS |
9775 | void |
9776 | Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl) | |
9777 | { | |
9778 | PTR_TBL_ENT_t **ary = tbl->tbl_ary; | |
9779 | UV oldsize = tbl->tbl_max + 1; | |
9780 | UV newsize = oldsize * 2; | |
9781 | UV i; | |
9782 | ||
9783 | Renew(ary, newsize, PTR_TBL_ENT_t*); | |
9784 | Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*); | |
9785 | tbl->tbl_max = --newsize; | |
9786 | tbl->tbl_ary = ary; | |
9787 | for (i=0; i < oldsize; i++, ary++) { | |
9788 | PTR_TBL_ENT_t **curentp, **entp, *ent; | |
9789 | if (!*ary) | |
9790 | continue; | |
9791 | curentp = ary + oldsize; | |
9792 | for (entp = ary, ent = *ary; ent; ent = *entp) { | |
d2a79402 | 9793 | if ((newsize & PTR2UV(ent->oldval)) != i) { |
1d7c1841 GS |
9794 | *entp = ent->next; |
9795 | ent->next = *curentp; | |
9796 | *curentp = ent; | |
9797 | continue; | |
9798 | } | |
9799 | else | |
9800 | entp = &ent->next; | |
9801 | } | |
9802 | } | |
9803 | } | |
9804 | ||
645c22ef DM |
9805 | /* remove all the entries from a ptr table */ |
9806 | ||
a0739874 DM |
9807 | void |
9808 | Perl_ptr_table_clear(pTHX_ PTR_TBL_t *tbl) | |
9809 | { | |
9810 | register PTR_TBL_ENT_t **array; | |
9811 | register PTR_TBL_ENT_t *entry; | |
9812 | register PTR_TBL_ENT_t *oentry = Null(PTR_TBL_ENT_t*); | |
9813 | UV riter = 0; | |
9814 | UV max; | |
9815 | ||
9816 | if (!tbl || !tbl->tbl_items) { | |
9817 | return; | |
9818 | } | |
9819 | ||
9820 | array = tbl->tbl_ary; | |
9821 | entry = array[0]; | |
9822 | max = tbl->tbl_max; | |
9823 | ||
9824 | for (;;) { | |
9825 | if (entry) { | |
9826 | oentry = entry; | |
9827 | entry = entry->next; | |
9828 | Safefree(oentry); | |
9829 | } | |
9830 | if (!entry) { | |
9831 | if (++riter > max) { | |
9832 | break; | |
9833 | } | |
9834 | entry = array[riter]; | |
9835 | } | |
9836 | } | |
9837 | ||
9838 | tbl->tbl_items = 0; | |
9839 | } | |
9840 | ||
645c22ef DM |
9841 | /* clear and free a ptr table */ |
9842 | ||
a0739874 DM |
9843 | void |
9844 | Perl_ptr_table_free(pTHX_ PTR_TBL_t *tbl) | |
9845 | { | |
9846 | if (!tbl) { | |
9847 | return; | |
9848 | } | |
9849 | ptr_table_clear(tbl); | |
9850 | Safefree(tbl->tbl_ary); | |
9851 | Safefree(tbl); | |
9852 | } | |
9853 | ||
1d7c1841 GS |
9854 | #ifdef DEBUGGING |
9855 | char *PL_watch_pvx; | |
9856 | #endif | |
9857 | ||
645c22ef DM |
9858 | /* attempt to make everything in the typeglob readonly */ |
9859 | ||
5bd07a3d | 9860 | STATIC SV * |
59b40662 | 9861 | S_gv_share(pTHX_ SV *sstr, CLONE_PARAMS *param) |
5bd07a3d DM |
9862 | { |
9863 | GV *gv = (GV*)sstr; | |
59b40662 | 9864 | SV *sv = ¶m->proto_perl->Isv_no; /* just need SvREADONLY-ness */ |
5bd07a3d DM |
9865 | |
9866 | if (GvIO(gv) || GvFORM(gv)) { | |
7fb37951 | 9867 | GvUNIQUE_off(gv); /* GvIOs cannot be shared. nor can GvFORMs */ |
5bd07a3d DM |
9868 | } |
9869 | else if (!GvCV(gv)) { | |
9870 | GvCV(gv) = (CV*)sv; | |
9871 | } | |
9872 | else { | |
9873 | /* CvPADLISTs cannot be shared */ | |
37e20706 | 9874 | if (!SvREADONLY(GvCV(gv)) && !CvXSUB(GvCV(gv))) { |
7fb37951 | 9875 | GvUNIQUE_off(gv); |
5bd07a3d DM |
9876 | } |
9877 | } | |
9878 | ||
7fb37951 | 9879 | if (!GvUNIQUE(gv)) { |
5bd07a3d DM |
9880 | #if 0 |
9881 | PerlIO_printf(Perl_debug_log, "gv_share: unable to share %s::%s\n", | |
9882 | HvNAME(GvSTASH(gv)), GvNAME(gv)); | |
9883 | #endif | |
9884 | return Nullsv; | |
9885 | } | |
9886 | ||
4411f3b6 | 9887 | /* |
5bd07a3d DM |
9888 | * write attempts will die with |
9889 | * "Modification of a read-only value attempted" | |
9890 | */ | |
9891 | if (!GvSV(gv)) { | |
9892 | GvSV(gv) = sv; | |
9893 | } | |
9894 | else { | |
9895 | SvREADONLY_on(GvSV(gv)); | |
9896 | } | |
9897 | ||
9898 | if (!GvAV(gv)) { | |
9899 | GvAV(gv) = (AV*)sv; | |
9900 | } | |
9901 | else { | |
9902 | SvREADONLY_on(GvAV(gv)); | |
9903 | } | |
9904 | ||
9905 | if (!GvHV(gv)) { | |
9906 | GvHV(gv) = (HV*)sv; | |
9907 | } | |
9908 | else { | |
9909 | SvREADONLY_on(GvAV(gv)); | |
9910 | } | |
9911 | ||
9912 | return sstr; /* he_dup() will SvREFCNT_inc() */ | |
9913 | } | |
9914 | ||
645c22ef DM |
9915 | /* duplicate an SV of any type (including AV, HV etc) */ |
9916 | ||
83841fad NIS |
9917 | void |
9918 | Perl_rvpv_dup(pTHX_ SV *dstr, SV *sstr, CLONE_PARAMS* param) | |
9919 | { | |
9920 | if (SvROK(sstr)) { | |
d3d0e6f1 | 9921 | SvRV(dstr) = SvWEAKREF(sstr) |
83841fad NIS |
9922 | ? sv_dup(SvRV(sstr), param) |
9923 | : sv_dup_inc(SvRV(sstr), param); | |
9924 | } | |
9925 | else if (SvPVX(sstr)) { | |
9926 | /* Has something there */ | |
9927 | if (SvLEN(sstr)) { | |
68795e93 | 9928 | /* Normal PV - clone whole allocated space */ |
83841fad | 9929 | SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1); |
d3d0e6f1 NC |
9930 | if (SvREADONLY(sstr) && SvFAKE(sstr)) { |
9931 | /* Not that normal - actually sstr is copy on write. | |
9932 | But we are a true, independant SV, so: */ | |
9933 | SvREADONLY_off(dstr); | |
9934 | SvFAKE_off(dstr); | |
9935 | } | |
68795e93 | 9936 | } |
83841fad NIS |
9937 | else { |
9938 | /* Special case - not normally malloced for some reason */ | |
9939 | if (SvREADONLY(sstr) && SvFAKE(sstr)) { | |
9940 | /* A "shared" PV - clone it as unshared string */ | |
281b2760 | 9941 | if(SvPADTMP(sstr)) { |
5e6160dc AB |
9942 | /* However, some of them live in the pad |
9943 | and they should not have these flags | |
9944 | turned off */ | |
281b2760 AB |
9945 | |
9946 | SvPVX(dstr) = sharepvn(SvPVX(sstr), SvCUR(sstr), | |
9947 | SvUVX(sstr)); | |
9948 | SvUVX(dstr) = SvUVX(sstr); | |
9949 | } else { | |
9950 | ||
9951 | SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvCUR(sstr)); | |
9952 | SvFAKE_off(dstr); | |
9953 | SvREADONLY_off(dstr); | |
5e6160dc | 9954 | } |
83841fad NIS |
9955 | } |
9956 | else { | |
9957 | /* Some other special case - random pointer */ | |
9958 | SvPVX(dstr) = SvPVX(sstr); | |
d3d0e6f1 | 9959 | } |
83841fad NIS |
9960 | } |
9961 | } | |
9962 | else { | |
9963 | /* Copy the Null */ | |
9964 | SvPVX(dstr) = SvPVX(sstr); | |
9965 | } | |
9966 | } | |
9967 | ||
1d7c1841 | 9968 | SV * |
a8fc9800 | 9969 | Perl_sv_dup(pTHX_ SV *sstr, CLONE_PARAMS* param) |
1d7c1841 | 9970 | { |
1d7c1841 GS |
9971 | SV *dstr; |
9972 | ||
9973 | if (!sstr || SvTYPE(sstr) == SVTYPEMASK) | |
9974 | return Nullsv; | |
9975 | /* look for it in the table first */ | |
9976 | dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr); | |
9977 | if (dstr) | |
9978 | return dstr; | |
9979 | ||
0405e91e AB |
9980 | if(param->flags & CLONEf_JOIN_IN) { |
9981 | /** We are joining here so we don't want do clone | |
9982 | something that is bad **/ | |
9983 | ||
9984 | if(SvTYPE(sstr) == SVt_PVHV && | |
9985 | HvNAME(sstr)) { | |
9986 | /** don't clone stashes if they already exist **/ | |
9987 | HV* old_stash = gv_stashpv(HvNAME(sstr),0); | |
9988 | return (SV*) old_stash; | |
9989 | } | |
9990 | } | |
9991 | ||
1d7c1841 GS |
9992 | /* create anew and remember what it is */ |
9993 | new_SV(dstr); | |
9994 | ptr_table_store(PL_ptr_table, sstr, dstr); | |
9995 | ||
9996 | /* clone */ | |
9997 | SvFLAGS(dstr) = SvFLAGS(sstr); | |
9998 | SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */ | |
9999 | SvREFCNT(dstr) = 0; /* must be before any other dups! */ | |
10000 | ||
10001 | #ifdef DEBUGGING | |
10002 | if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx) | |
10003 | PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n", | |
10004 | PL_watch_pvx, SvPVX(sstr)); | |
10005 | #endif | |
10006 | ||
10007 | switch (SvTYPE(sstr)) { | |
10008 | case SVt_NULL: | |
10009 | SvANY(dstr) = NULL; | |
10010 | break; | |
10011 | case SVt_IV: | |
10012 | SvANY(dstr) = new_XIV(); | |
10013 | SvIVX(dstr) = SvIVX(sstr); | |
10014 | break; | |
10015 | case SVt_NV: | |
10016 | SvANY(dstr) = new_XNV(); | |
10017 | SvNVX(dstr) = SvNVX(sstr); | |
10018 | break; | |
10019 | case SVt_RV: | |
10020 | SvANY(dstr) = new_XRV(); | |
83841fad | 10021 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10022 | break; |
10023 | case SVt_PV: | |
10024 | SvANY(dstr) = new_XPV(); | |
10025 | SvCUR(dstr) = SvCUR(sstr); | |
10026 | SvLEN(dstr) = SvLEN(sstr); | |
83841fad | 10027 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10028 | break; |
10029 | case SVt_PVIV: | |
10030 | SvANY(dstr) = new_XPVIV(); | |
10031 | SvCUR(dstr) = SvCUR(sstr); | |
10032 | SvLEN(dstr) = SvLEN(sstr); | |
10033 | SvIVX(dstr) = SvIVX(sstr); | |
83841fad | 10034 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10035 | break; |
10036 | case SVt_PVNV: | |
10037 | SvANY(dstr) = new_XPVNV(); | |
10038 | SvCUR(dstr) = SvCUR(sstr); | |
10039 | SvLEN(dstr) = SvLEN(sstr); | |
10040 | SvIVX(dstr) = SvIVX(sstr); | |
10041 | SvNVX(dstr) = SvNVX(sstr); | |
83841fad | 10042 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10043 | break; |
10044 | case SVt_PVMG: | |
10045 | SvANY(dstr) = new_XPVMG(); | |
10046 | SvCUR(dstr) = SvCUR(sstr); | |
10047 | SvLEN(dstr) = SvLEN(sstr); | |
10048 | SvIVX(dstr) = SvIVX(sstr); | |
10049 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10050 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10051 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10052 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10053 | break; |
10054 | case SVt_PVBM: | |
10055 | SvANY(dstr) = new_XPVBM(); | |
10056 | SvCUR(dstr) = SvCUR(sstr); | |
10057 | SvLEN(dstr) = SvLEN(sstr); | |
10058 | SvIVX(dstr) = SvIVX(sstr); | |
10059 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10060 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10061 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10062 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10063 | BmRARE(dstr) = BmRARE(sstr); |
10064 | BmUSEFUL(dstr) = BmUSEFUL(sstr); | |
10065 | BmPREVIOUS(dstr)= BmPREVIOUS(sstr); | |
10066 | break; | |
10067 | case SVt_PVLV: | |
10068 | SvANY(dstr) = new_XPVLV(); | |
10069 | SvCUR(dstr) = SvCUR(sstr); | |
10070 | SvLEN(dstr) = SvLEN(sstr); | |
10071 | SvIVX(dstr) = SvIVX(sstr); | |
10072 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10073 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10074 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10075 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10076 | LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */ |
10077 | LvTARGLEN(dstr) = LvTARGLEN(sstr); | |
dd28f7bb DM |
10078 | if (LvTYPE(sstr) == 't') /* for tie: unrefcnted fake (SV**) */ |
10079 | LvTARG(dstr) = dstr; | |
10080 | else if (LvTYPE(sstr) == 'T') /* for tie: fake HE */ | |
10081 | LvTARG(dstr) = (SV*)he_dup((HE*)LvTARG(sstr), 0, param); | |
10082 | else | |
10083 | LvTARG(dstr) = sv_dup_inc(LvTARG(sstr), param); | |
1d7c1841 GS |
10084 | LvTYPE(dstr) = LvTYPE(sstr); |
10085 | break; | |
10086 | case SVt_PVGV: | |
7fb37951 | 10087 | if (GvUNIQUE((GV*)sstr)) { |
5bd07a3d | 10088 | SV *share; |
59b40662 | 10089 | if ((share = gv_share(sstr, param))) { |
5bd07a3d DM |
10090 | del_SV(dstr); |
10091 | dstr = share; | |
37e20706 | 10092 | ptr_table_store(PL_ptr_table, sstr, dstr); |
5bd07a3d DM |
10093 | #if 0 |
10094 | PerlIO_printf(Perl_debug_log, "sv_dup: sharing %s::%s\n", | |
10095 | HvNAME(GvSTASH(share)), GvNAME(share)); | |
10096 | #endif | |
10097 | break; | |
10098 | } | |
10099 | } | |
1d7c1841 GS |
10100 | SvANY(dstr) = new_XPVGV(); |
10101 | SvCUR(dstr) = SvCUR(sstr); | |
10102 | SvLEN(dstr) = SvLEN(sstr); | |
10103 | SvIVX(dstr) = SvIVX(sstr); | |
10104 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10105 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10106 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10107 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10108 | GvNAMELEN(dstr) = GvNAMELEN(sstr); |
10109 | GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr)); | |
d2d73c3e | 10110 | GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr), param); |
1d7c1841 | 10111 | GvFLAGS(dstr) = GvFLAGS(sstr); |
d2d73c3e | 10112 | GvGP(dstr) = gp_dup(GvGP(sstr), param); |
1d7c1841 GS |
10113 | (void)GpREFCNT_inc(GvGP(dstr)); |
10114 | break; | |
10115 | case SVt_PVIO: | |
10116 | SvANY(dstr) = new_XPVIO(); | |
10117 | SvCUR(dstr) = SvCUR(sstr); | |
10118 | SvLEN(dstr) = SvLEN(sstr); | |
10119 | SvIVX(dstr) = SvIVX(sstr); | |
10120 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10121 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10122 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10123 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
a8fc9800 | 10124 | IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr), param); |
1d7c1841 GS |
10125 | if (IoOFP(sstr) == IoIFP(sstr)) |
10126 | IoOFP(dstr) = IoIFP(dstr); | |
10127 | else | |
a8fc9800 | 10128 | IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr), param); |
1d7c1841 GS |
10129 | /* PL_rsfp_filters entries have fake IoDIRP() */ |
10130 | if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP)) | |
10131 | IoDIRP(dstr) = dirp_dup(IoDIRP(sstr)); | |
10132 | else | |
10133 | IoDIRP(dstr) = IoDIRP(sstr); | |
10134 | IoLINES(dstr) = IoLINES(sstr); | |
10135 | IoPAGE(dstr) = IoPAGE(sstr); | |
10136 | IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr); | |
10137 | IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr); | |
5a37521b AB |
10138 | if(IoFLAGS(sstr) & IOf_FAKE_DIRP) { |
10139 | /* I have no idea why fake dirp (rsfps) | |
10140 | should be treaded differently but otherwise | |
10141 | we end up with leaks -- sky*/ | |
10142 | IoTOP_GV(dstr) = gv_dup_inc(IoTOP_GV(sstr), param); | |
10143 | IoFMT_GV(dstr) = gv_dup_inc(IoFMT_GV(sstr), param); | |
10144 | IoBOTTOM_GV(dstr) = gv_dup_inc(IoBOTTOM_GV(sstr), param); | |
10145 | } else { | |
10146 | IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr), param); | |
10147 | IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr), param); | |
10148 | IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr), param); | |
10149 | } | |
1d7c1841 | 10150 | IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr)); |
1d7c1841 | 10151 | IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr)); |
1d7c1841 | 10152 | IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr)); |
1d7c1841 GS |
10153 | IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr); |
10154 | IoTYPE(dstr) = IoTYPE(sstr); | |
10155 | IoFLAGS(dstr) = IoFLAGS(sstr); | |
10156 | break; | |
10157 | case SVt_PVAV: | |
10158 | SvANY(dstr) = new_XPVAV(); | |
10159 | SvCUR(dstr) = SvCUR(sstr); | |
10160 | SvLEN(dstr) = SvLEN(sstr); | |
10161 | SvIVX(dstr) = SvIVX(sstr); | |
10162 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10163 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10164 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
10165 | AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr), param); | |
1d7c1841 GS |
10166 | AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr); |
10167 | if (AvARRAY((AV*)sstr)) { | |
10168 | SV **dst_ary, **src_ary; | |
10169 | SSize_t items = AvFILLp((AV*)sstr) + 1; | |
10170 | ||
10171 | src_ary = AvARRAY((AV*)sstr); | |
10172 | Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*); | |
10173 | ptr_table_store(PL_ptr_table, src_ary, dst_ary); | |
10174 | SvPVX(dstr) = (char*)dst_ary; | |
10175 | AvALLOC((AV*)dstr) = dst_ary; | |
10176 | if (AvREAL((AV*)sstr)) { | |
10177 | while (items-- > 0) | |
d2d73c3e | 10178 | *dst_ary++ = sv_dup_inc(*src_ary++, param); |
1d7c1841 GS |
10179 | } |
10180 | else { | |
10181 | while (items-- > 0) | |
d2d73c3e | 10182 | *dst_ary++ = sv_dup(*src_ary++, param); |
1d7c1841 GS |
10183 | } |
10184 | items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr); | |
10185 | while (items-- > 0) { | |
10186 | *dst_ary++ = &PL_sv_undef; | |
10187 | } | |
10188 | } | |
10189 | else { | |
10190 | SvPVX(dstr) = Nullch; | |
10191 | AvALLOC((AV*)dstr) = (SV**)NULL; | |
10192 | } | |
10193 | break; | |
10194 | case SVt_PVHV: | |
10195 | SvANY(dstr) = new_XPVHV(); | |
10196 | SvCUR(dstr) = SvCUR(sstr); | |
10197 | SvLEN(dstr) = SvLEN(sstr); | |
10198 | SvIVX(dstr) = SvIVX(sstr); | |
10199 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10200 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10201 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
1d7c1841 GS |
10202 | HvRITER((HV*)dstr) = HvRITER((HV*)sstr); |
10203 | if (HvARRAY((HV*)sstr)) { | |
1d7c1841 GS |
10204 | STRLEN i = 0; |
10205 | XPVHV *dxhv = (XPVHV*)SvANY(dstr); | |
10206 | XPVHV *sxhv = (XPVHV*)SvANY(sstr); | |
10207 | Newz(0, dxhv->xhv_array, | |
10208 | PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char); | |
10209 | while (i <= sxhv->xhv_max) { | |
10210 | ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i], | |
eb160463 GS |
10211 | (bool)!!HvSHAREKEYS(sstr), |
10212 | param); | |
1d7c1841 GS |
10213 | ++i; |
10214 | } | |
eb160463 GS |
10215 | dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, |
10216 | (bool)!!HvSHAREKEYS(sstr), param); | |
1d7c1841 GS |
10217 | } |
10218 | else { | |
10219 | SvPVX(dstr) = Nullch; | |
10220 | HvEITER((HV*)dstr) = (HE*)NULL; | |
10221 | } | |
10222 | HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */ | |
10223 | HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr)); | |
c43294b8 | 10224 | /* Record stashes for possible cloning in Perl_clone(). */ |
6676db26 | 10225 | if(HvNAME((HV*)dstr)) |
d2d73c3e | 10226 | av_push(param->stashes, dstr); |
1d7c1841 GS |
10227 | break; |
10228 | case SVt_PVFM: | |
10229 | SvANY(dstr) = new_XPVFM(); | |
10230 | FmLINES(dstr) = FmLINES(sstr); | |
10231 | goto dup_pvcv; | |
10232 | /* NOTREACHED */ | |
10233 | case SVt_PVCV: | |
10234 | SvANY(dstr) = new_XPVCV(); | |
d2d73c3e | 10235 | dup_pvcv: |
1d7c1841 GS |
10236 | SvCUR(dstr) = SvCUR(sstr); |
10237 | SvLEN(dstr) = SvLEN(sstr); | |
10238 | SvIVX(dstr) = SvIVX(sstr); | |
10239 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10240 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10241 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10242 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
d2d73c3e | 10243 | CvSTASH(dstr) = hv_dup(CvSTASH(sstr), param); /* NOTE: not refcounted */ |
1d7c1841 GS |
10244 | CvSTART(dstr) = CvSTART(sstr); |
10245 | CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr)); | |
10246 | CvXSUB(dstr) = CvXSUB(sstr); | |
10247 | CvXSUBANY(dstr) = CvXSUBANY(sstr); | |
01485f8b DM |
10248 | if (CvCONST(sstr)) { |
10249 | CvXSUBANY(dstr).any_ptr = GvUNIQUE(CvGV(sstr)) ? | |
10250 | SvREFCNT_inc(CvXSUBANY(sstr).any_ptr) : | |
10251 | sv_dup_inc(CvXSUBANY(sstr).any_ptr, param); | |
10252 | } | |
d2d73c3e AB |
10253 | CvGV(dstr) = gv_dup(CvGV(sstr), param); |
10254 | if (param->flags & CLONEf_COPY_STACKS) { | |
10255 | CvDEPTH(dstr) = CvDEPTH(sstr); | |
10256 | } else { | |
10257 | CvDEPTH(dstr) = 0; | |
10258 | } | |
dd2155a4 | 10259 | PAD_DUP(CvPADLIST(dstr), CvPADLIST(sstr), param); |
7dafbf52 DM |
10260 | CvOUTSIDE_SEQ(dstr) = CvOUTSIDE_SEQ(sstr); |
10261 | CvOUTSIDE(dstr) = | |
10262 | CvWEAKOUTSIDE(sstr) | |
10263 | ? cv_dup( CvOUTSIDE(sstr), param) | |
10264 | : cv_dup_inc(CvOUTSIDE(sstr), param); | |
1d7c1841 | 10265 | CvFLAGS(dstr) = CvFLAGS(sstr); |
54356c7d | 10266 | CvFILE(dstr) = CvXSUB(sstr) ? CvFILE(sstr) : SAVEPV(CvFILE(sstr)); |
1d7c1841 GS |
10267 | break; |
10268 | default: | |
c803eecc | 10269 | Perl_croak(aTHX_ "Bizarre SvTYPE [%" IVdf "]", (IV)SvTYPE(sstr)); |
1d7c1841 GS |
10270 | break; |
10271 | } | |
10272 | ||
10273 | if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO) | |
10274 | ++PL_sv_objcount; | |
10275 | ||
10276 | return dstr; | |
d2d73c3e | 10277 | } |
1d7c1841 | 10278 | |
645c22ef DM |
10279 | /* duplicate a context */ |
10280 | ||
1d7c1841 | 10281 | PERL_CONTEXT * |
a8fc9800 | 10282 | Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max, CLONE_PARAMS* param) |
1d7c1841 GS |
10283 | { |
10284 | PERL_CONTEXT *ncxs; | |
10285 | ||
10286 | if (!cxs) | |
10287 | return (PERL_CONTEXT*)NULL; | |
10288 | ||
10289 | /* look for it in the table first */ | |
10290 | ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs); | |
10291 | if (ncxs) | |
10292 | return ncxs; | |
10293 | ||
10294 | /* create anew and remember what it is */ | |
10295 | Newz(56, ncxs, max + 1, PERL_CONTEXT); | |
10296 | ptr_table_store(PL_ptr_table, cxs, ncxs); | |
10297 | ||
10298 | while (ix >= 0) { | |
10299 | PERL_CONTEXT *cx = &cxs[ix]; | |
10300 | PERL_CONTEXT *ncx = &ncxs[ix]; | |
10301 | ncx->cx_type = cx->cx_type; | |
10302 | if (CxTYPE(cx) == CXt_SUBST) { | |
10303 | Perl_croak(aTHX_ "Cloning substitution context is unimplemented"); | |
10304 | } | |
10305 | else { | |
10306 | ncx->blk_oldsp = cx->blk_oldsp; | |
10307 | ncx->blk_oldcop = cx->blk_oldcop; | |
10308 | ncx->blk_oldretsp = cx->blk_oldretsp; | |
10309 | ncx->blk_oldmarksp = cx->blk_oldmarksp; | |
10310 | ncx->blk_oldscopesp = cx->blk_oldscopesp; | |
10311 | ncx->blk_oldpm = cx->blk_oldpm; | |
10312 | ncx->blk_gimme = cx->blk_gimme; | |
10313 | switch (CxTYPE(cx)) { | |
10314 | case CXt_SUB: | |
10315 | ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0 | |
d2d73c3e AB |
10316 | ? cv_dup_inc(cx->blk_sub.cv, param) |
10317 | : cv_dup(cx->blk_sub.cv,param)); | |
1d7c1841 | 10318 | ncx->blk_sub.argarray = (cx->blk_sub.hasargs |
d2d73c3e | 10319 | ? av_dup_inc(cx->blk_sub.argarray, param) |
1d7c1841 | 10320 | : Nullav); |
d2d73c3e | 10321 | ncx->blk_sub.savearray = av_dup_inc(cx->blk_sub.savearray, param); |
1d7c1841 GS |
10322 | ncx->blk_sub.olddepth = cx->blk_sub.olddepth; |
10323 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; | |
10324 | ncx->blk_sub.lval = cx->blk_sub.lval; | |
10325 | break; | |
10326 | case CXt_EVAL: | |
10327 | ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval; | |
10328 | ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type; | |
b47cad08 | 10329 | ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv, param); |
1d7c1841 | 10330 | ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root; |
d2d73c3e | 10331 | ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text, param); |
1d7c1841 GS |
10332 | break; |
10333 | case CXt_LOOP: | |
10334 | ncx->blk_loop.label = cx->blk_loop.label; | |
10335 | ncx->blk_loop.resetsp = cx->blk_loop.resetsp; | |
10336 | ncx->blk_loop.redo_op = cx->blk_loop.redo_op; | |
10337 | ncx->blk_loop.next_op = cx->blk_loop.next_op; | |
10338 | ncx->blk_loop.last_op = cx->blk_loop.last_op; | |
10339 | ncx->blk_loop.iterdata = (CxPADLOOP(cx) | |
10340 | ? cx->blk_loop.iterdata | |
d2d73c3e | 10341 | : gv_dup((GV*)cx->blk_loop.iterdata, param)); |
f3548bdc DM |
10342 | ncx->blk_loop.oldcomppad |
10343 | = (PAD*)ptr_table_fetch(PL_ptr_table, | |
10344 | cx->blk_loop.oldcomppad); | |
d2d73c3e AB |
10345 | ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave, param); |
10346 | ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval, param); | |
10347 | ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary, param); | |
1d7c1841 GS |
10348 | ncx->blk_loop.iterix = cx->blk_loop.iterix; |
10349 | ncx->blk_loop.itermax = cx->blk_loop.itermax; | |
10350 | break; | |
10351 | case CXt_FORMAT: | |
d2d73c3e AB |
10352 | ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv, param); |
10353 | ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv, param); | |
10354 | ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv, param); | |
1d7c1841 GS |
10355 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; |
10356 | break; | |
10357 | case CXt_BLOCK: | |
10358 | case CXt_NULL: | |
10359 | break; | |
10360 | } | |
10361 | } | |
10362 | --ix; | |
10363 | } | |
10364 | return ncxs; | |
10365 | } | |
10366 | ||
645c22ef DM |
10367 | /* duplicate a stack info structure */ |
10368 | ||
1d7c1841 | 10369 | PERL_SI * |
a8fc9800 | 10370 | Perl_si_dup(pTHX_ PERL_SI *si, CLONE_PARAMS* param) |
1d7c1841 GS |
10371 | { |
10372 | PERL_SI *nsi; | |
10373 | ||
10374 | if (!si) | |
10375 | return (PERL_SI*)NULL; | |
10376 | ||
10377 | /* look for it in the table first */ | |
10378 | nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si); | |
10379 | if (nsi) | |
10380 | return nsi; | |
10381 | ||
10382 | /* create anew and remember what it is */ | |
10383 | Newz(56, nsi, 1, PERL_SI); | |
10384 | ptr_table_store(PL_ptr_table, si, nsi); | |
10385 | ||
d2d73c3e | 10386 | nsi->si_stack = av_dup_inc(si->si_stack, param); |
1d7c1841 GS |
10387 | nsi->si_cxix = si->si_cxix; |
10388 | nsi->si_cxmax = si->si_cxmax; | |
d2d73c3e | 10389 | nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax, param); |
1d7c1841 | 10390 | nsi->si_type = si->si_type; |
d2d73c3e AB |
10391 | nsi->si_prev = si_dup(si->si_prev, param); |
10392 | nsi->si_next = si_dup(si->si_next, param); | |
1d7c1841 GS |
10393 | nsi->si_markoff = si->si_markoff; |
10394 | ||
10395 | return nsi; | |
10396 | } | |
10397 | ||
10398 | #define POPINT(ss,ix) ((ss)[--(ix)].any_i32) | |
10399 | #define TOPINT(ss,ix) ((ss)[ix].any_i32) | |
10400 | #define POPLONG(ss,ix) ((ss)[--(ix)].any_long) | |
10401 | #define TOPLONG(ss,ix) ((ss)[ix].any_long) | |
10402 | #define POPIV(ss,ix) ((ss)[--(ix)].any_iv) | |
10403 | #define TOPIV(ss,ix) ((ss)[ix].any_iv) | |
38d8b13e HS |
10404 | #define POPBOOL(ss,ix) ((ss)[--(ix)].any_bool) |
10405 | #define TOPBOOL(ss,ix) ((ss)[ix].any_bool) | |
1d7c1841 GS |
10406 | #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr) |
10407 | #define TOPPTR(ss,ix) ((ss)[ix].any_ptr) | |
10408 | #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr) | |
10409 | #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr) | |
10410 | #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr) | |
10411 | #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr) | |
10412 | ||
10413 | /* XXXXX todo */ | |
10414 | #define pv_dup_inc(p) SAVEPV(p) | |
10415 | #define pv_dup(p) SAVEPV(p) | |
10416 | #define svp_dup_inc(p,pp) any_dup(p,pp) | |
10417 | ||
645c22ef DM |
10418 | /* map any object to the new equivent - either something in the |
10419 | * ptr table, or something in the interpreter structure | |
10420 | */ | |
10421 | ||
1d7c1841 GS |
10422 | void * |
10423 | Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl) | |
10424 | { | |
10425 | void *ret; | |
10426 | ||
10427 | if (!v) | |
10428 | return (void*)NULL; | |
10429 | ||
10430 | /* look for it in the table first */ | |
10431 | ret = ptr_table_fetch(PL_ptr_table, v); | |
10432 | if (ret) | |
10433 | return ret; | |
10434 | ||
10435 | /* see if it is part of the interpreter structure */ | |
10436 | if (v >= (void*)proto_perl && v < (void*)(proto_perl+1)) | |
acfe0abc | 10437 | ret = (void*)(((char*)aTHX) + (((char*)v) - (char*)proto_perl)); |
05ec9bb3 | 10438 | else { |
1d7c1841 | 10439 | ret = v; |
05ec9bb3 | 10440 | } |
1d7c1841 GS |
10441 | |
10442 | return ret; | |
10443 | } | |
10444 | ||
645c22ef DM |
10445 | /* duplicate the save stack */ |
10446 | ||
1d7c1841 | 10447 | ANY * |
a8fc9800 | 10448 | Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl, CLONE_PARAMS* param) |
1d7c1841 GS |
10449 | { |
10450 | ANY *ss = proto_perl->Tsavestack; | |
10451 | I32 ix = proto_perl->Tsavestack_ix; | |
10452 | I32 max = proto_perl->Tsavestack_max; | |
10453 | ANY *nss; | |
10454 | SV *sv; | |
10455 | GV *gv; | |
10456 | AV *av; | |
10457 | HV *hv; | |
10458 | void* ptr; | |
10459 | int intval; | |
10460 | long longval; | |
10461 | GP *gp; | |
10462 | IV iv; | |
10463 | I32 i; | |
c4e33207 | 10464 | char *c = NULL; |
1d7c1841 | 10465 | void (*dptr) (void*); |
acfe0abc | 10466 | void (*dxptr) (pTHX_ void*); |
e977893f | 10467 | OP *o; |
1d7c1841 GS |
10468 | |
10469 | Newz(54, nss, max, ANY); | |
10470 | ||
10471 | while (ix > 0) { | |
10472 | i = POPINT(ss,ix); | |
10473 | TOPINT(nss,ix) = i; | |
10474 | switch (i) { | |
10475 | case SAVEt_ITEM: /* normal string */ | |
10476 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10477 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 10478 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 10479 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
10480 | break; |
10481 | case SAVEt_SV: /* scalar reference */ | |
10482 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10483 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 10484 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 10485 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 | 10486 | break; |
f4dd75d9 GS |
10487 | case SAVEt_GENERIC_PVREF: /* generic char* */ |
10488 | c = (char*)POPPTR(ss,ix); | |
10489 | TOPPTR(nss,ix) = pv_dup(c); | |
10490 | ptr = POPPTR(ss,ix); | |
10491 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10492 | break; | |
05ec9bb3 NIS |
10493 | case SAVEt_SHARED_PVREF: /* char* in shared space */ |
10494 | c = (char*)POPPTR(ss,ix); | |
10495 | TOPPTR(nss,ix) = savesharedpv(c); | |
10496 | ptr = POPPTR(ss,ix); | |
10497 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10498 | break; | |
1d7c1841 GS |
10499 | case SAVEt_GENERIC_SVREF: /* generic sv */ |
10500 | case SAVEt_SVREF: /* scalar reference */ | |
10501 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10502 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
10503 | ptr = POPPTR(ss,ix); |
10504 | TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */ | |
10505 | break; | |
10506 | case SAVEt_AV: /* array reference */ | |
10507 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 10508 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 | 10509 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 10510 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
10511 | break; |
10512 | case SAVEt_HV: /* hash reference */ | |
10513 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 10514 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 | 10515 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 10516 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
10517 | break; |
10518 | case SAVEt_INT: /* int reference */ | |
10519 | ptr = POPPTR(ss,ix); | |
10520 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10521 | intval = (int)POPINT(ss,ix); | |
10522 | TOPINT(nss,ix) = intval; | |
10523 | break; | |
10524 | case SAVEt_LONG: /* long reference */ | |
10525 | ptr = POPPTR(ss,ix); | |
10526 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10527 | longval = (long)POPLONG(ss,ix); | |
10528 | TOPLONG(nss,ix) = longval; | |
10529 | break; | |
10530 | case SAVEt_I32: /* I32 reference */ | |
10531 | case SAVEt_I16: /* I16 reference */ | |
10532 | case SAVEt_I8: /* I8 reference */ | |
10533 | ptr = POPPTR(ss,ix); | |
10534 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10535 | i = POPINT(ss,ix); | |
10536 | TOPINT(nss,ix) = i; | |
10537 | break; | |
10538 | case SAVEt_IV: /* IV reference */ | |
10539 | ptr = POPPTR(ss,ix); | |
10540 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10541 | iv = POPIV(ss,ix); | |
10542 | TOPIV(nss,ix) = iv; | |
10543 | break; | |
10544 | case SAVEt_SPTR: /* SV* reference */ | |
10545 | ptr = POPPTR(ss,ix); | |
10546 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10547 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10548 | TOPPTR(nss,ix) = sv_dup(sv, param); |
1d7c1841 GS |
10549 | break; |
10550 | case SAVEt_VPTR: /* random* reference */ | |
10551 | ptr = POPPTR(ss,ix); | |
10552 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10553 | ptr = POPPTR(ss,ix); | |
10554 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10555 | break; | |
10556 | case SAVEt_PPTR: /* char* reference */ | |
10557 | ptr = POPPTR(ss,ix); | |
10558 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10559 | c = (char*)POPPTR(ss,ix); | |
10560 | TOPPTR(nss,ix) = pv_dup(c); | |
10561 | break; | |
10562 | case SAVEt_HPTR: /* HV* reference */ | |
10563 | ptr = POPPTR(ss,ix); | |
10564 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10565 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 10566 | TOPPTR(nss,ix) = hv_dup(hv, param); |
1d7c1841 GS |
10567 | break; |
10568 | case SAVEt_APTR: /* AV* reference */ | |
10569 | ptr = POPPTR(ss,ix); | |
10570 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10571 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 10572 | TOPPTR(nss,ix) = av_dup(av, param); |
1d7c1841 GS |
10573 | break; |
10574 | case SAVEt_NSTAB: | |
10575 | gv = (GV*)POPPTR(ss,ix); | |
d2d73c3e | 10576 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
10577 | break; |
10578 | case SAVEt_GP: /* scalar reference */ | |
10579 | gp = (GP*)POPPTR(ss,ix); | |
d2d73c3e | 10580 | TOPPTR(nss,ix) = gp = gp_dup(gp, param); |
1d7c1841 GS |
10581 | (void)GpREFCNT_inc(gp); |
10582 | gv = (GV*)POPPTR(ss,ix); | |
2ed3c8fc | 10583 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 GS |
10584 | c = (char*)POPPTR(ss,ix); |
10585 | TOPPTR(nss,ix) = pv_dup(c); | |
10586 | iv = POPIV(ss,ix); | |
10587 | TOPIV(nss,ix) = iv; | |
10588 | iv = POPIV(ss,ix); | |
10589 | TOPIV(nss,ix) = iv; | |
10590 | break; | |
10591 | case SAVEt_FREESV: | |
26d9b02f | 10592 | case SAVEt_MORTALIZESV: |
1d7c1841 | 10593 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 10594 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
10595 | break; |
10596 | case SAVEt_FREEOP: | |
10597 | ptr = POPPTR(ss,ix); | |
10598 | if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) { | |
10599 | /* these are assumed to be refcounted properly */ | |
10600 | switch (((OP*)ptr)->op_type) { | |
10601 | case OP_LEAVESUB: | |
10602 | case OP_LEAVESUBLV: | |
10603 | case OP_LEAVEEVAL: | |
10604 | case OP_LEAVE: | |
10605 | case OP_SCOPE: | |
10606 | case OP_LEAVEWRITE: | |
e977893f GS |
10607 | TOPPTR(nss,ix) = ptr; |
10608 | o = (OP*)ptr; | |
10609 | OpREFCNT_inc(o); | |
1d7c1841 GS |
10610 | break; |
10611 | default: | |
10612 | TOPPTR(nss,ix) = Nullop; | |
10613 | break; | |
10614 | } | |
10615 | } | |
10616 | else | |
10617 | TOPPTR(nss,ix) = Nullop; | |
10618 | break; | |
10619 | case SAVEt_FREEPV: | |
10620 | c = (char*)POPPTR(ss,ix); | |
10621 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
10622 | break; | |
10623 | case SAVEt_CLEARSV: | |
10624 | longval = POPLONG(ss,ix); | |
10625 | TOPLONG(nss,ix) = longval; | |
10626 | break; | |
10627 | case SAVEt_DELETE: | |
10628 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 10629 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
10630 | c = (char*)POPPTR(ss,ix); |
10631 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
10632 | i = POPINT(ss,ix); | |
10633 | TOPINT(nss,ix) = i; | |
10634 | break; | |
10635 | case SAVEt_DESTRUCTOR: | |
10636 | ptr = POPPTR(ss,ix); | |
10637 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
10638 | dptr = POPDPTR(ss,ix); | |
ef75a179 | 10639 | TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl); |
1d7c1841 GS |
10640 | break; |
10641 | case SAVEt_DESTRUCTOR_X: | |
10642 | ptr = POPPTR(ss,ix); | |
10643 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
10644 | dxptr = POPDXPTR(ss,ix); | |
acfe0abc | 10645 | TOPDXPTR(nss,ix) = (void (*)(pTHX_ void*))any_dup((void *)dxptr, proto_perl); |
1d7c1841 GS |
10646 | break; |
10647 | case SAVEt_REGCONTEXT: | |
10648 | case SAVEt_ALLOC: | |
10649 | i = POPINT(ss,ix); | |
10650 | TOPINT(nss,ix) = i; | |
10651 | ix -= i; | |
10652 | break; | |
10653 | case SAVEt_STACK_POS: /* Position on Perl stack */ | |
10654 | i = POPINT(ss,ix); | |
10655 | TOPINT(nss,ix) = i; | |
10656 | break; | |
10657 | case SAVEt_AELEM: /* array element */ | |
10658 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10659 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
10660 | i = POPINT(ss,ix); |
10661 | TOPINT(nss,ix) = i; | |
10662 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 10663 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 GS |
10664 | break; |
10665 | case SAVEt_HELEM: /* hash element */ | |
10666 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10667 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 10668 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 10669 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 10670 | hv = (HV*)POPPTR(ss,ix); |
d2d73c3e | 10671 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
10672 | break; |
10673 | case SAVEt_OP: | |
10674 | ptr = POPPTR(ss,ix); | |
10675 | TOPPTR(nss,ix) = ptr; | |
10676 | break; | |
10677 | case SAVEt_HINTS: | |
10678 | i = POPINT(ss,ix); | |
10679 | TOPINT(nss,ix) = i; | |
10680 | break; | |
c4410b1b GS |
10681 | case SAVEt_COMPPAD: |
10682 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 10683 | TOPPTR(nss,ix) = av_dup(av, param); |
c4410b1b | 10684 | break; |
c3564e5c GS |
10685 | case SAVEt_PADSV: |
10686 | longval = (long)POPLONG(ss,ix); | |
10687 | TOPLONG(nss,ix) = longval; | |
10688 | ptr = POPPTR(ss,ix); | |
10689 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10690 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10691 | TOPPTR(nss,ix) = sv_dup(sv, param); |
c3564e5c | 10692 | break; |
a1bb4754 | 10693 | case SAVEt_BOOL: |
38d8b13e | 10694 | ptr = POPPTR(ss,ix); |
b9609c01 | 10695 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); |
38d8b13e | 10696 | longval = (long)POPBOOL(ss,ix); |
b9609c01 | 10697 | TOPBOOL(nss,ix) = (bool)longval; |
a1bb4754 | 10698 | break; |
1d7c1841 GS |
10699 | default: |
10700 | Perl_croak(aTHX_ "panic: ss_dup inconsistency"); | |
10701 | } | |
10702 | } | |
10703 | ||
10704 | return nss; | |
10705 | } | |
10706 | ||
645c22ef DM |
10707 | /* |
10708 | =for apidoc perl_clone | |
10709 | ||
10710 | Create and return a new interpreter by cloning the current one. | |
10711 | ||
6a78b4db AB |
10712 | perl_clone takes these flags as paramters: |
10713 | ||
10714 | CLONEf_COPY_STACKS - is used to, well, copy the stacks also, | |
10715 | without it we only clone the data and zero the stacks, | |
10716 | with it we copy the stacks and the new perl interpreter is | |
10717 | ready to run at the exact same point as the previous one. | |
10718 | The pseudo-fork code uses COPY_STACKS while the | |
10719 | threads->new doesn't. | |
10720 | ||
10721 | CLONEf_KEEP_PTR_TABLE | |
10722 | perl_clone keeps a ptr_table with the pointer of the old | |
10723 | variable as a key and the new variable as a value, | |
10724 | this allows it to check if something has been cloned and not | |
10725 | clone it again but rather just use the value and increase the | |
10726 | refcount. If KEEP_PTR_TABLE is not set then perl_clone will kill | |
10727 | the ptr_table using the function | |
10728 | C<ptr_table_free(PL_ptr_table); PL_ptr_table = NULL;>, | |
10729 | reason to keep it around is if you want to dup some of your own | |
10730 | variable who are outside the graph perl scans, example of this | |
10731 | code is in threads.xs create | |
10732 | ||
10733 | CLONEf_CLONE_HOST | |
10734 | This is a win32 thing, it is ignored on unix, it tells perls | |
10735 | win32host code (which is c++) to clone itself, this is needed on | |
10736 | win32 if you want to run two threads at the same time, | |
10737 | if you just want to do some stuff in a separate perl interpreter | |
10738 | and then throw it away and return to the original one, | |
10739 | you don't need to do anything. | |
10740 | ||
645c22ef DM |
10741 | =cut |
10742 | */ | |
10743 | ||
10744 | /* XXX the above needs expanding by someone who actually understands it ! */ | |
3fc56081 NK |
10745 | EXTERN_C PerlInterpreter * |
10746 | perl_clone_host(PerlInterpreter* proto_perl, UV flags); | |
645c22ef | 10747 | |
1d7c1841 GS |
10748 | PerlInterpreter * |
10749 | perl_clone(PerlInterpreter *proto_perl, UV flags) | |
10750 | { | |
1d7c1841 | 10751 | #ifdef PERL_IMPLICIT_SYS |
c43294b8 AB |
10752 | |
10753 | /* perlhost.h so we need to call into it | |
10754 | to clone the host, CPerlHost should have a c interface, sky */ | |
10755 | ||
10756 | if (flags & CLONEf_CLONE_HOST) { | |
10757 | return perl_clone_host(proto_perl,flags); | |
10758 | } | |
10759 | return perl_clone_using(proto_perl, flags, | |
1d7c1841 GS |
10760 | proto_perl->IMem, |
10761 | proto_perl->IMemShared, | |
10762 | proto_perl->IMemParse, | |
10763 | proto_perl->IEnv, | |
10764 | proto_perl->IStdIO, | |
10765 | proto_perl->ILIO, | |
10766 | proto_perl->IDir, | |
10767 | proto_perl->ISock, | |
10768 | proto_perl->IProc); | |
10769 | } | |
10770 | ||
10771 | PerlInterpreter * | |
10772 | perl_clone_using(PerlInterpreter *proto_perl, UV flags, | |
10773 | struct IPerlMem* ipM, struct IPerlMem* ipMS, | |
10774 | struct IPerlMem* ipMP, struct IPerlEnv* ipE, | |
10775 | struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO, | |
10776 | struct IPerlDir* ipD, struct IPerlSock* ipS, | |
10777 | struct IPerlProc* ipP) | |
10778 | { | |
10779 | /* XXX many of the string copies here can be optimized if they're | |
10780 | * constants; they need to be allocated as common memory and just | |
10781 | * their pointers copied. */ | |
10782 | ||
10783 | IV i; | |
64aa0685 GS |
10784 | CLONE_PARAMS clone_params; |
10785 | CLONE_PARAMS* param = &clone_params; | |
d2d73c3e | 10786 | |
1d7c1841 | 10787 | PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter)); |
ba869deb | 10788 | PERL_SET_THX(my_perl); |
1d7c1841 | 10789 | |
acfe0abc | 10790 | # ifdef DEBUGGING |
a4530404 | 10791 | Poison(my_perl, 1, PerlInterpreter); |
1d7c1841 GS |
10792 | PL_markstack = 0; |
10793 | PL_scopestack = 0; | |
10794 | PL_savestack = 0; | |
22f7c9c9 JH |
10795 | PL_savestack_ix = 0; |
10796 | PL_savestack_max = -1; | |
1d7c1841 | 10797 | PL_retstack = 0; |
66fe0623 | 10798 | PL_sig_pending = 0; |
25596c82 | 10799 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); |
acfe0abc | 10800 | # else /* !DEBUGGING */ |
1d7c1841 | 10801 | Zero(my_perl, 1, PerlInterpreter); |
acfe0abc | 10802 | # endif /* DEBUGGING */ |
1d7c1841 GS |
10803 | |
10804 | /* host pointers */ | |
10805 | PL_Mem = ipM; | |
10806 | PL_MemShared = ipMS; | |
10807 | PL_MemParse = ipMP; | |
10808 | PL_Env = ipE; | |
10809 | PL_StdIO = ipStd; | |
10810 | PL_LIO = ipLIO; | |
10811 | PL_Dir = ipD; | |
10812 | PL_Sock = ipS; | |
10813 | PL_Proc = ipP; | |
1d7c1841 GS |
10814 | #else /* !PERL_IMPLICIT_SYS */ |
10815 | IV i; | |
64aa0685 GS |
10816 | CLONE_PARAMS clone_params; |
10817 | CLONE_PARAMS* param = &clone_params; | |
1d7c1841 | 10818 | PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter)); |
ba869deb | 10819 | PERL_SET_THX(my_perl); |
1d7c1841 | 10820 | |
d2d73c3e AB |
10821 | |
10822 | ||
1d7c1841 | 10823 | # ifdef DEBUGGING |
a4530404 | 10824 | Poison(my_perl, 1, PerlInterpreter); |
1d7c1841 GS |
10825 | PL_markstack = 0; |
10826 | PL_scopestack = 0; | |
10827 | PL_savestack = 0; | |
22f7c9c9 JH |
10828 | PL_savestack_ix = 0; |
10829 | PL_savestack_max = -1; | |
1d7c1841 | 10830 | PL_retstack = 0; |
66fe0623 | 10831 | PL_sig_pending = 0; |
25596c82 | 10832 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); |
1d7c1841 GS |
10833 | # else /* !DEBUGGING */ |
10834 | Zero(my_perl, 1, PerlInterpreter); | |
10835 | # endif /* DEBUGGING */ | |
10836 | #endif /* PERL_IMPLICIT_SYS */ | |
83236556 | 10837 | param->flags = flags; |
59b40662 | 10838 | param->proto_perl = proto_perl; |
1d7c1841 GS |
10839 | |
10840 | /* arena roots */ | |
10841 | PL_xiv_arenaroot = NULL; | |
10842 | PL_xiv_root = NULL; | |
612f20c3 | 10843 | PL_xnv_arenaroot = NULL; |
1d7c1841 | 10844 | PL_xnv_root = NULL; |
612f20c3 | 10845 | PL_xrv_arenaroot = NULL; |
1d7c1841 | 10846 | PL_xrv_root = NULL; |
612f20c3 | 10847 | PL_xpv_arenaroot = NULL; |
1d7c1841 | 10848 | PL_xpv_root = NULL; |
612f20c3 | 10849 | PL_xpviv_arenaroot = NULL; |
1d7c1841 | 10850 | PL_xpviv_root = NULL; |
612f20c3 | 10851 | PL_xpvnv_arenaroot = NULL; |
1d7c1841 | 10852 | PL_xpvnv_root = NULL; |
612f20c3 | 10853 | PL_xpvcv_arenaroot = NULL; |
1d7c1841 | 10854 | PL_xpvcv_root = NULL; |
612f20c3 | 10855 | PL_xpvav_arenaroot = NULL; |
1d7c1841 | 10856 | PL_xpvav_root = NULL; |
612f20c3 | 10857 | PL_xpvhv_arenaroot = NULL; |
1d7c1841 | 10858 | PL_xpvhv_root = NULL; |
612f20c3 | 10859 | PL_xpvmg_arenaroot = NULL; |
1d7c1841 | 10860 | PL_xpvmg_root = NULL; |
612f20c3 | 10861 | PL_xpvlv_arenaroot = NULL; |
1d7c1841 | 10862 | PL_xpvlv_root = NULL; |
612f20c3 | 10863 | PL_xpvbm_arenaroot = NULL; |
1d7c1841 | 10864 | PL_xpvbm_root = NULL; |
612f20c3 | 10865 | PL_he_arenaroot = NULL; |
1d7c1841 GS |
10866 | PL_he_root = NULL; |
10867 | PL_nice_chunk = NULL; | |
10868 | PL_nice_chunk_size = 0; | |
10869 | PL_sv_count = 0; | |
10870 | PL_sv_objcount = 0; | |
10871 | PL_sv_root = Nullsv; | |
10872 | PL_sv_arenaroot = Nullsv; | |
10873 | ||
10874 | PL_debug = proto_perl->Idebug; | |
10875 | ||
e5dd39fc | 10876 | #ifdef USE_REENTRANT_API |
59bd0823 | 10877 | Perl_reentrant_init(aTHX); |
e5dd39fc AB |
10878 | #endif |
10879 | ||
1d7c1841 GS |
10880 | /* create SV map for pointer relocation */ |
10881 | PL_ptr_table = ptr_table_new(); | |
10882 | ||
10883 | /* initialize these special pointers as early as possible */ | |
10884 | SvANY(&PL_sv_undef) = NULL; | |
10885 | SvREFCNT(&PL_sv_undef) = (~(U32)0)/2; | |
10886 | SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL; | |
10887 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef); | |
10888 | ||
1d7c1841 | 10889 | SvANY(&PL_sv_no) = new_XPVNV(); |
1d7c1841 GS |
10890 | SvREFCNT(&PL_sv_no) = (~(U32)0)/2; |
10891 | SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
10892 | SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0); | |
10893 | SvCUR(&PL_sv_no) = 0; | |
10894 | SvLEN(&PL_sv_no) = 1; | |
10895 | SvNVX(&PL_sv_no) = 0; | |
10896 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no); | |
10897 | ||
1d7c1841 | 10898 | SvANY(&PL_sv_yes) = new_XPVNV(); |
1d7c1841 GS |
10899 | SvREFCNT(&PL_sv_yes) = (~(U32)0)/2; |
10900 | SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
10901 | SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1); | |
10902 | SvCUR(&PL_sv_yes) = 1; | |
10903 | SvLEN(&PL_sv_yes) = 2; | |
10904 | SvNVX(&PL_sv_yes) = 1; | |
10905 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes); | |
10906 | ||
05ec9bb3 | 10907 | /* create (a non-shared!) shared string table */ |
1d7c1841 GS |
10908 | PL_strtab = newHV(); |
10909 | HvSHAREKEYS_off(PL_strtab); | |
10910 | hv_ksplit(PL_strtab, 512); | |
10911 | ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab); | |
10912 | ||
05ec9bb3 NIS |
10913 | PL_compiling = proto_perl->Icompiling; |
10914 | ||
10915 | /* These two PVs will be free'd special way so must set them same way op.c does */ | |
10916 | PL_compiling.cop_stashpv = savesharedpv(PL_compiling.cop_stashpv); | |
10917 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_stashpv, PL_compiling.cop_stashpv); | |
10918 | ||
10919 | PL_compiling.cop_file = savesharedpv(PL_compiling.cop_file); | |
10920 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_file, PL_compiling.cop_file); | |
10921 | ||
1d7c1841 GS |
10922 | ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling); |
10923 | if (!specialWARN(PL_compiling.cop_warnings)) | |
d2d73c3e | 10924 | PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings, param); |
ac27b0f5 | 10925 | if (!specialCopIO(PL_compiling.cop_io)) |
d2d73c3e | 10926 | PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io, param); |
1d7c1841 GS |
10927 | PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl); |
10928 | ||
10929 | /* pseudo environmental stuff */ | |
10930 | PL_origargc = proto_perl->Iorigargc; | |
e2975953 | 10931 | PL_origargv = proto_perl->Iorigargv; |
d2d73c3e | 10932 | |
d2d73c3e AB |
10933 | param->stashes = newAV(); /* Setup array of objects to call clone on */ |
10934 | ||
a1ea730d | 10935 | #ifdef PERLIO_LAYERS |
3a1ee7e8 NIS |
10936 | /* Clone PerlIO tables as soon as we can handle general xx_dup() */ |
10937 | PerlIO_clone(aTHX_ proto_perl, param); | |
a1ea730d | 10938 | #endif |
d2d73c3e AB |
10939 | |
10940 | PL_envgv = gv_dup(proto_perl->Ienvgv, param); | |
10941 | PL_incgv = gv_dup(proto_perl->Iincgv, param); | |
10942 | PL_hintgv = gv_dup(proto_perl->Ihintgv, param); | |
1d7c1841 | 10943 | PL_origfilename = SAVEPV(proto_perl->Iorigfilename); |
d2d73c3e AB |
10944 | PL_diehook = sv_dup_inc(proto_perl->Idiehook, param); |
10945 | PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook, param); | |
1d7c1841 GS |
10946 | |
10947 | /* switches */ | |
10948 | PL_minus_c = proto_perl->Iminus_c; | |
d2d73c3e | 10949 | PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel, param); |
1d7c1841 GS |
10950 | PL_localpatches = proto_perl->Ilocalpatches; |
10951 | PL_splitstr = proto_perl->Isplitstr; | |
10952 | PL_preprocess = proto_perl->Ipreprocess; | |
10953 | PL_minus_n = proto_perl->Iminus_n; | |
10954 | PL_minus_p = proto_perl->Iminus_p; | |
10955 | PL_minus_l = proto_perl->Iminus_l; | |
10956 | PL_minus_a = proto_perl->Iminus_a; | |
10957 | PL_minus_F = proto_perl->Iminus_F; | |
10958 | PL_doswitches = proto_perl->Idoswitches; | |
10959 | PL_dowarn = proto_perl->Idowarn; | |
10960 | PL_doextract = proto_perl->Idoextract; | |
10961 | PL_sawampersand = proto_perl->Isawampersand; | |
10962 | PL_unsafe = proto_perl->Iunsafe; | |
10963 | PL_inplace = SAVEPV(proto_perl->Iinplace); | |
d2d73c3e | 10964 | PL_e_script = sv_dup_inc(proto_perl->Ie_script, param); |
1d7c1841 GS |
10965 | PL_perldb = proto_perl->Iperldb; |
10966 | PL_perl_destruct_level = proto_perl->Iperl_destruct_level; | |
1cbb0781 | 10967 | PL_exit_flags = proto_perl->Iexit_flags; |
1d7c1841 GS |
10968 | |
10969 | /* magical thingies */ | |
10970 | /* XXX time(&PL_basetime) when asked for? */ | |
10971 | PL_basetime = proto_perl->Ibasetime; | |
d2d73c3e | 10972 | PL_formfeed = sv_dup(proto_perl->Iformfeed, param); |
1d7c1841 GS |
10973 | |
10974 | PL_maxsysfd = proto_perl->Imaxsysfd; | |
10975 | PL_multiline = proto_perl->Imultiline; | |
10976 | PL_statusvalue = proto_perl->Istatusvalue; | |
10977 | #ifdef VMS | |
10978 | PL_statusvalue_vms = proto_perl->Istatusvalue_vms; | |
10979 | #endif | |
0a378802 | 10980 | PL_encoding = sv_dup(proto_perl->Iencoding, param); |
1d7c1841 | 10981 | |
4a4c6fe3 | 10982 | sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */ |
1f483ca1 JH |
10983 | sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */ |
10984 | sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */ | |
4a4c6fe3 | 10985 | |
d2f185dc AMS |
10986 | /* Clone the regex array */ |
10987 | PL_regex_padav = newAV(); | |
10988 | { | |
10989 | I32 len = av_len((AV*)proto_perl->Iregex_padav); | |
10990 | SV** regexen = AvARRAY((AV*)proto_perl->Iregex_padav); | |
0f95fc41 AB |
10991 | av_push(PL_regex_padav, |
10992 | sv_dup_inc(regexen[0],param)); | |
10993 | for(i = 1; i <= len; i++) { | |
10994 | if(SvREPADTMP(regexen[i])) { | |
10995 | av_push(PL_regex_padav, sv_dup_inc(regexen[i], param)); | |
8cf8f3d1 | 10996 | } else { |
0f95fc41 AB |
10997 | av_push(PL_regex_padav, |
10998 | SvREFCNT_inc( | |
8cf8f3d1 | 10999 | newSViv(PTR2IV(re_dup(INT2PTR(REGEXP *, |
cbfa9890 | 11000 | SvIVX(regexen[i])), param))) |
0f95fc41 AB |
11001 | )); |
11002 | } | |
d2f185dc AMS |
11003 | } |
11004 | } | |
11005 | PL_regex_pad = AvARRAY(PL_regex_padav); | |
1fcf4c12 | 11006 | |
1d7c1841 | 11007 | /* shortcuts to various I/O objects */ |
d2d73c3e AB |
11008 | PL_stdingv = gv_dup(proto_perl->Istdingv, param); |
11009 | PL_stderrgv = gv_dup(proto_perl->Istderrgv, param); | |
11010 | PL_defgv = gv_dup(proto_perl->Idefgv, param); | |
11011 | PL_argvgv = gv_dup(proto_perl->Iargvgv, param); | |
11012 | PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv, param); | |
11013 | PL_argvout_stack = av_dup_inc(proto_perl->Iargvout_stack, param); | |
1d7c1841 GS |
11014 | |
11015 | /* shortcuts to regexp stuff */ | |
d2d73c3e | 11016 | PL_replgv = gv_dup(proto_perl->Ireplgv, param); |
1d7c1841 GS |
11017 | |
11018 | /* shortcuts to misc objects */ | |
d2d73c3e | 11019 | PL_errgv = gv_dup(proto_perl->Ierrgv, param); |
1d7c1841 GS |
11020 | |
11021 | /* shortcuts to debugging objects */ | |
d2d73c3e AB |
11022 | PL_DBgv = gv_dup(proto_perl->IDBgv, param); |
11023 | PL_DBline = gv_dup(proto_perl->IDBline, param); | |
11024 | PL_DBsub = gv_dup(proto_perl->IDBsub, param); | |
11025 | PL_DBsingle = sv_dup(proto_perl->IDBsingle, param); | |
11026 | PL_DBtrace = sv_dup(proto_perl->IDBtrace, param); | |
11027 | PL_DBsignal = sv_dup(proto_perl->IDBsignal, param); | |
06492da6 | 11028 | PL_DBassertion = sv_dup(proto_perl->IDBassertion, param); |
d2d73c3e AB |
11029 | PL_lineary = av_dup(proto_perl->Ilineary, param); |
11030 | PL_dbargs = av_dup(proto_perl->Idbargs, param); | |
1d7c1841 GS |
11031 | |
11032 | /* symbol tables */ | |
d2d73c3e AB |
11033 | PL_defstash = hv_dup_inc(proto_perl->Tdefstash, param); |
11034 | PL_curstash = hv_dup(proto_perl->Tcurstash, param); | |
d2d73c3e AB |
11035 | PL_debstash = hv_dup(proto_perl->Idebstash, param); |
11036 | PL_globalstash = hv_dup(proto_perl->Iglobalstash, param); | |
11037 | PL_curstname = sv_dup_inc(proto_perl->Icurstname, param); | |
11038 | ||
11039 | PL_beginav = av_dup_inc(proto_perl->Ibeginav, param); | |
ee1c5a4e | 11040 | PL_beginav_save = av_dup_inc(proto_perl->Ibeginav_save, param); |
ece599bd | 11041 | PL_checkav_save = av_dup_inc(proto_perl->Icheckav_save, param); |
d2d73c3e AB |
11042 | PL_endav = av_dup_inc(proto_perl->Iendav, param); |
11043 | PL_checkav = av_dup_inc(proto_perl->Icheckav, param); | |
11044 | PL_initav = av_dup_inc(proto_perl->Iinitav, param); | |
1d7c1841 GS |
11045 | |
11046 | PL_sub_generation = proto_perl->Isub_generation; | |
11047 | ||
11048 | /* funky return mechanisms */ | |
11049 | PL_forkprocess = proto_perl->Iforkprocess; | |
11050 | ||
11051 | /* subprocess state */ | |
d2d73c3e | 11052 | PL_fdpid = av_dup_inc(proto_perl->Ifdpid, param); |
1d7c1841 GS |
11053 | |
11054 | /* internal state */ | |
11055 | PL_tainting = proto_perl->Itainting; | |
7135f00b | 11056 | PL_taint_warn = proto_perl->Itaint_warn; |
1d7c1841 GS |
11057 | PL_maxo = proto_perl->Imaxo; |
11058 | if (proto_perl->Iop_mask) | |
11059 | PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo); | |
11060 | else | |
11061 | PL_op_mask = Nullch; | |
06492da6 | 11062 | /* PL_asserting = proto_perl->Iasserting; */ |
1d7c1841 GS |
11063 | |
11064 | /* current interpreter roots */ | |
d2d73c3e | 11065 | PL_main_cv = cv_dup_inc(proto_perl->Imain_cv, param); |
1d7c1841 GS |
11066 | PL_main_root = OpREFCNT_inc(proto_perl->Imain_root); |
11067 | PL_main_start = proto_perl->Imain_start; | |
e977893f | 11068 | PL_eval_root = proto_perl->Ieval_root; |
1d7c1841 GS |
11069 | PL_eval_start = proto_perl->Ieval_start; |
11070 | ||
11071 | /* runtime control stuff */ | |
11072 | PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl); | |
11073 | PL_copline = proto_perl->Icopline; | |
11074 | ||
11075 | PL_filemode = proto_perl->Ifilemode; | |
11076 | PL_lastfd = proto_perl->Ilastfd; | |
11077 | PL_oldname = proto_perl->Ioldname; /* XXX not quite right */ | |
11078 | PL_Argv = NULL; | |
11079 | PL_Cmd = Nullch; | |
11080 | PL_gensym = proto_perl->Igensym; | |
11081 | PL_preambled = proto_perl->Ipreambled; | |
d2d73c3e | 11082 | PL_preambleav = av_dup_inc(proto_perl->Ipreambleav, param); |
1d7c1841 GS |
11083 | PL_laststatval = proto_perl->Ilaststatval; |
11084 | PL_laststype = proto_perl->Ilaststype; | |
11085 | PL_mess_sv = Nullsv; | |
11086 | ||
d2d73c3e | 11087 | PL_ors_sv = sv_dup_inc(proto_perl->Iors_sv, param); |
1d7c1841 GS |
11088 | PL_ofmt = SAVEPV(proto_perl->Iofmt); |
11089 | ||
11090 | /* interpreter atexit processing */ | |
11091 | PL_exitlistlen = proto_perl->Iexitlistlen; | |
11092 | if (PL_exitlistlen) { | |
11093 | New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
11094 | Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
11095 | } | |
11096 | else | |
11097 | PL_exitlist = (PerlExitListEntry*)NULL; | |
d2d73c3e | 11098 | PL_modglobal = hv_dup_inc(proto_perl->Imodglobal, param); |
19e8ce8e AB |
11099 | PL_custom_op_names = hv_dup_inc(proto_perl->Icustom_op_names,param); |
11100 | PL_custom_op_descs = hv_dup_inc(proto_perl->Icustom_op_descs,param); | |
1d7c1841 GS |
11101 | |
11102 | PL_profiledata = NULL; | |
a8fc9800 | 11103 | PL_rsfp = fp_dup(proto_perl->Irsfp, '<', param); |
1d7c1841 | 11104 | /* PL_rsfp_filters entries have fake IoDIRP() */ |
d2d73c3e | 11105 | PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters, param); |
1d7c1841 | 11106 | |
d2d73c3e | 11107 | PL_compcv = cv_dup(proto_perl->Icompcv, param); |
dd2155a4 DM |
11108 | |
11109 | PAD_CLONE_VARS(proto_perl, param); | |
1d7c1841 GS |
11110 | |
11111 | #ifdef HAVE_INTERP_INTERN | |
11112 | sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern); | |
11113 | #endif | |
11114 | ||
11115 | /* more statics moved here */ | |
11116 | PL_generation = proto_perl->Igeneration; | |
d2d73c3e | 11117 | PL_DBcv = cv_dup(proto_perl->IDBcv, param); |
1d7c1841 GS |
11118 | |
11119 | PL_in_clean_objs = proto_perl->Iin_clean_objs; | |
11120 | PL_in_clean_all = proto_perl->Iin_clean_all; | |
11121 | ||
11122 | PL_uid = proto_perl->Iuid; | |
11123 | PL_euid = proto_perl->Ieuid; | |
11124 | PL_gid = proto_perl->Igid; | |
11125 | PL_egid = proto_perl->Iegid; | |
11126 | PL_nomemok = proto_perl->Inomemok; | |
11127 | PL_an = proto_perl->Ian; | |
1d7c1841 GS |
11128 | PL_op_seqmax = proto_perl->Iop_seqmax; |
11129 | PL_evalseq = proto_perl->Ievalseq; | |
11130 | PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */ | |
11131 | PL_origalen = proto_perl->Iorigalen; | |
11132 | PL_pidstatus = newHV(); /* XXX flag for cloning? */ | |
11133 | PL_osname = SAVEPV(proto_perl->Iosname); | |
5c728af0 | 11134 | PL_sh_path_compat = proto_perl->Ish_path_compat; /* XXX never deallocated */ |
1d7c1841 GS |
11135 | PL_sighandlerp = proto_perl->Isighandlerp; |
11136 | ||
11137 | ||
11138 | PL_runops = proto_perl->Irunops; | |
11139 | ||
11140 | Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char); | |
11141 | ||
11142 | #ifdef CSH | |
11143 | PL_cshlen = proto_perl->Icshlen; | |
74f1b2b8 | 11144 | PL_cshname = proto_perl->Icshname; /* XXX never deallocated */ |
1d7c1841 GS |
11145 | #endif |
11146 | ||
11147 | PL_lex_state = proto_perl->Ilex_state; | |
11148 | PL_lex_defer = proto_perl->Ilex_defer; | |
11149 | PL_lex_expect = proto_perl->Ilex_expect; | |
11150 | PL_lex_formbrack = proto_perl->Ilex_formbrack; | |
11151 | PL_lex_dojoin = proto_perl->Ilex_dojoin; | |
11152 | PL_lex_starts = proto_perl->Ilex_starts; | |
d2d73c3e AB |
11153 | PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff, param); |
11154 | PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl, param); | |
1d7c1841 GS |
11155 | PL_lex_op = proto_perl->Ilex_op; |
11156 | PL_lex_inpat = proto_perl->Ilex_inpat; | |
11157 | PL_lex_inwhat = proto_perl->Ilex_inwhat; | |
11158 | PL_lex_brackets = proto_perl->Ilex_brackets; | |
11159 | i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets); | |
11160 | PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i); | |
11161 | PL_lex_casemods = proto_perl->Ilex_casemods; | |
11162 | i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods); | |
11163 | PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i); | |
11164 | ||
11165 | Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE); | |
11166 | Copy(proto_perl->Inexttype, PL_nexttype, 5, I32); | |
11167 | PL_nexttoke = proto_perl->Inexttoke; | |
11168 | ||
1d773130 TB |
11169 | /* XXX This is probably masking the deeper issue of why |
11170 | * SvANY(proto_perl->Ilinestr) can be NULL at this point. For test case: | |
11171 | * http://archive.develooper.com/perl5-porters%40perl.org/msg83298.html | |
11172 | * (A little debugging with a watchpoint on it may help.) | |
11173 | */ | |
389edf32 TB |
11174 | if (SvANY(proto_perl->Ilinestr)) { |
11175 | PL_linestr = sv_dup_inc(proto_perl->Ilinestr, param); | |
11176 | i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr); | |
11177 | PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11178 | i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr); | |
11179 | PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11180 | i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr); | |
11181 | PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11182 | i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr); | |
11183 | PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11184 | } | |
11185 | else { | |
11186 | PL_linestr = NEWSV(65,79); | |
11187 | sv_upgrade(PL_linestr,SVt_PVIV); | |
11188 | sv_setpvn(PL_linestr,"",0); | |
11189 | PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
11190 | } | |
1d7c1841 | 11191 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
1d7c1841 GS |
11192 | PL_pending_ident = proto_perl->Ipending_ident; |
11193 | PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */ | |
11194 | ||
11195 | PL_expect = proto_perl->Iexpect; | |
11196 | ||
11197 | PL_multi_start = proto_perl->Imulti_start; | |
11198 | PL_multi_end = proto_perl->Imulti_end; | |
11199 | PL_multi_open = proto_perl->Imulti_open; | |
11200 | PL_multi_close = proto_perl->Imulti_close; | |
11201 | ||
11202 | PL_error_count = proto_perl->Ierror_count; | |
11203 | PL_subline = proto_perl->Isubline; | |
d2d73c3e | 11204 | PL_subname = sv_dup_inc(proto_perl->Isubname, param); |
1d7c1841 | 11205 | |
1d773130 | 11206 | /* XXX See comment on SvANY(proto_perl->Ilinestr) above */ |
389edf32 TB |
11207 | if (SvANY(proto_perl->Ilinestr)) { |
11208 | i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr); | |
11209 | PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11210 | i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr); | |
11211 | PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11212 | PL_last_lop_op = proto_perl->Ilast_lop_op; | |
11213 | } | |
11214 | else { | |
11215 | PL_last_uni = SvPVX(PL_linestr); | |
11216 | PL_last_lop = SvPVX(PL_linestr); | |
11217 | PL_last_lop_op = 0; | |
11218 | } | |
1d7c1841 | 11219 | PL_in_my = proto_perl->Iin_my; |
d2d73c3e | 11220 | PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash, param); |
1d7c1841 GS |
11221 | #ifdef FCRYPT |
11222 | PL_cryptseen = proto_perl->Icryptseen; | |
11223 | #endif | |
11224 | ||
11225 | PL_hints = proto_perl->Ihints; | |
11226 | ||
11227 | PL_amagic_generation = proto_perl->Iamagic_generation; | |
11228 | ||
11229 | #ifdef USE_LOCALE_COLLATE | |
11230 | PL_collation_ix = proto_perl->Icollation_ix; | |
11231 | PL_collation_name = SAVEPV(proto_perl->Icollation_name); | |
11232 | PL_collation_standard = proto_perl->Icollation_standard; | |
11233 | PL_collxfrm_base = proto_perl->Icollxfrm_base; | |
11234 | PL_collxfrm_mult = proto_perl->Icollxfrm_mult; | |
11235 | #endif /* USE_LOCALE_COLLATE */ | |
11236 | ||
11237 | #ifdef USE_LOCALE_NUMERIC | |
11238 | PL_numeric_name = SAVEPV(proto_perl->Inumeric_name); | |
11239 | PL_numeric_standard = proto_perl->Inumeric_standard; | |
11240 | PL_numeric_local = proto_perl->Inumeric_local; | |
d2d73c3e | 11241 | PL_numeric_radix_sv = sv_dup_inc(proto_perl->Inumeric_radix_sv, param); |
1d7c1841 GS |
11242 | #endif /* !USE_LOCALE_NUMERIC */ |
11243 | ||
11244 | /* utf8 character classes */ | |
d2d73c3e AB |
11245 | PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum, param); |
11246 | PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc, param); | |
11247 | PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii, param); | |
11248 | PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha, param); | |
11249 | PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space, param); | |
11250 | PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl, param); | |
11251 | PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph, param); | |
11252 | PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit, param); | |
11253 | PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper, param); | |
11254 | PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower, param); | |
11255 | PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print, param); | |
11256 | PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct, param); | |
11257 | PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit, param); | |
11258 | PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark, param); | |
11259 | PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper, param); | |
11260 | PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle, param); | |
11261 | PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower, param); | |
b4e400f9 | 11262 | PL_utf8_tofold = sv_dup_inc(proto_perl->Iutf8_tofold, param); |
82686b01 JH |
11263 | PL_utf8_idstart = sv_dup_inc(proto_perl->Iutf8_idstart, param); |
11264 | PL_utf8_idcont = sv_dup_inc(proto_perl->Iutf8_idcont, param); | |
1d7c1841 | 11265 | |
6c3182a5 | 11266 | /* Did the locale setup indicate UTF-8? */ |
9769094f | 11267 | PL_utf8locale = proto_perl->Iutf8locale; |
6c3182a5 JH |
11268 | /* Unicode features (see perlrun/-C) */ |
11269 | PL_unicode = proto_perl->Iunicode; | |
11270 | ||
11271 | /* Pre-5.8 signals control */ | |
11272 | PL_signals = proto_perl->Isignals; | |
11273 | ||
11274 | /* times() ticks per second */ | |
11275 | PL_clocktick = proto_perl->Iclocktick; | |
11276 | ||
11277 | /* Recursion stopper for PerlIO_find_layer */ | |
11278 | PL_in_load_module = proto_perl->Iin_load_module; | |
11279 | ||
11280 | /* sort() routine */ | |
11281 | PL_sort_RealCmp = proto_perl->Isort_RealCmp; | |
11282 | ||
57c6e6d2 JH |
11283 | /* Not really needed/useful since the reenrant_retint is "volatile", |
11284 | * but do it for consistency's sake. */ | |
11285 | PL_reentrant_retint = proto_perl->Ireentrant_retint; | |
11286 | ||
15a5279a JH |
11287 | /* Hooks to shared SVs and locks. */ |
11288 | PL_sharehook = proto_perl->Isharehook; | |
11289 | PL_lockhook = proto_perl->Ilockhook; | |
11290 | PL_unlockhook = proto_perl->Iunlockhook; | |
11291 | PL_threadhook = proto_perl->Ithreadhook; | |
11292 | ||
bce260cd JH |
11293 | PL_runops_std = proto_perl->Irunops_std; |
11294 | PL_runops_dbg = proto_perl->Irunops_dbg; | |
11295 | ||
11296 | #ifdef THREADS_HAVE_PIDS | |
11297 | PL_ppid = proto_perl->Ippid; | |
11298 | #endif | |
11299 | ||
1d7c1841 GS |
11300 | /* swatch cache */ |
11301 | PL_last_swash_hv = Nullhv; /* reinits on demand */ | |
11302 | PL_last_swash_klen = 0; | |
11303 | PL_last_swash_key[0]= '\0'; | |
11304 | PL_last_swash_tmps = (U8*)NULL; | |
11305 | PL_last_swash_slen = 0; | |
11306 | ||
11307 | /* perly.c globals */ | |
11308 | PL_yydebug = proto_perl->Iyydebug; | |
11309 | PL_yynerrs = proto_perl->Iyynerrs; | |
11310 | PL_yyerrflag = proto_perl->Iyyerrflag; | |
11311 | PL_yychar = proto_perl->Iyychar; | |
11312 | PL_yyval = proto_perl->Iyyval; | |
11313 | PL_yylval = proto_perl->Iyylval; | |
11314 | ||
11315 | PL_glob_index = proto_perl->Iglob_index; | |
11316 | PL_srand_called = proto_perl->Isrand_called; | |
504f80c1 | 11317 | PL_hash_seed = proto_perl->Ihash_seed; |
1d7c1841 GS |
11318 | PL_uudmap['M'] = 0; /* reinits on demand */ |
11319 | PL_bitcount = Nullch; /* reinits on demand */ | |
11320 | ||
66fe0623 NIS |
11321 | if (proto_perl->Ipsig_pend) { |
11322 | Newz(0, PL_psig_pend, SIG_SIZE, int); | |
9dd79c3f | 11323 | } |
66fe0623 NIS |
11324 | else { |
11325 | PL_psig_pend = (int*)NULL; | |
11326 | } | |
11327 | ||
1d7c1841 | 11328 | if (proto_perl->Ipsig_ptr) { |
76d3c696 JH |
11329 | Newz(0, PL_psig_ptr, SIG_SIZE, SV*); |
11330 | Newz(0, PL_psig_name, SIG_SIZE, SV*); | |
76d3c696 | 11331 | for (i = 1; i < SIG_SIZE; i++) { |
d2d73c3e AB |
11332 | PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i], param); |
11333 | PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i], param); | |
1d7c1841 GS |
11334 | } |
11335 | } | |
11336 | else { | |
11337 | PL_psig_ptr = (SV**)NULL; | |
11338 | PL_psig_name = (SV**)NULL; | |
11339 | } | |
11340 | ||
11341 | /* thrdvar.h stuff */ | |
11342 | ||
a0739874 | 11343 | if (flags & CLONEf_COPY_STACKS) { |
1d7c1841 GS |
11344 | /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */ |
11345 | PL_tmps_ix = proto_perl->Ttmps_ix; | |
11346 | PL_tmps_max = proto_perl->Ttmps_max; | |
11347 | PL_tmps_floor = proto_perl->Ttmps_floor; | |
11348 | Newz(50, PL_tmps_stack, PL_tmps_max, SV*); | |
11349 | i = 0; | |
11350 | while (i <= PL_tmps_ix) { | |
d2d73c3e | 11351 | PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i], param); |
1d7c1841 GS |
11352 | ++i; |
11353 | } | |
11354 | ||
11355 | /* next PUSHMARK() sets *(PL_markstack_ptr+1) */ | |
11356 | i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack; | |
11357 | Newz(54, PL_markstack, i, I32); | |
11358 | PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max | |
11359 | - proto_perl->Tmarkstack); | |
11360 | PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr | |
11361 | - proto_perl->Tmarkstack); | |
11362 | Copy(proto_perl->Tmarkstack, PL_markstack, | |
11363 | PL_markstack_ptr - PL_markstack + 1, I32); | |
11364 | ||
11365 | /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix] | |
11366 | * NOTE: unlike the others! */ | |
11367 | PL_scopestack_ix = proto_perl->Tscopestack_ix; | |
11368 | PL_scopestack_max = proto_perl->Tscopestack_max; | |
11369 | Newz(54, PL_scopestack, PL_scopestack_max, I32); | |
11370 | Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32); | |
11371 | ||
11372 | /* next push_return() sets PL_retstack[PL_retstack_ix] | |
11373 | * NOTE: unlike the others! */ | |
11374 | PL_retstack_ix = proto_perl->Tretstack_ix; | |
11375 | PL_retstack_max = proto_perl->Tretstack_max; | |
11376 | Newz(54, PL_retstack, PL_retstack_max, OP*); | |
ce0a1ae0 | 11377 | Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, OP*); |
1d7c1841 GS |
11378 | |
11379 | /* NOTE: si_dup() looks at PL_markstack */ | |
d2d73c3e | 11380 | PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo, param); |
1d7c1841 GS |
11381 | |
11382 | /* PL_curstack = PL_curstackinfo->si_stack; */ | |
d2d73c3e AB |
11383 | PL_curstack = av_dup(proto_perl->Tcurstack, param); |
11384 | PL_mainstack = av_dup(proto_perl->Tmainstack, param); | |
1d7c1841 GS |
11385 | |
11386 | /* next PUSHs() etc. set *(PL_stack_sp+1) */ | |
11387 | PL_stack_base = AvARRAY(PL_curstack); | |
11388 | PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp | |
11389 | - proto_perl->Tstack_base); | |
11390 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); | |
11391 | ||
11392 | /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix] | |
11393 | * NOTE: unlike the others! */ | |
11394 | PL_savestack_ix = proto_perl->Tsavestack_ix; | |
11395 | PL_savestack_max = proto_perl->Tsavestack_max; | |
11396 | /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/ | |
d2d73c3e | 11397 | PL_savestack = ss_dup(proto_perl, param); |
1d7c1841 GS |
11398 | } |
11399 | else { | |
11400 | init_stacks(); | |
985e7056 | 11401 | ENTER; /* perl_destruct() wants to LEAVE; */ |
1d7c1841 GS |
11402 | } |
11403 | ||
11404 | PL_start_env = proto_perl->Tstart_env; /* XXXXXX */ | |
11405 | PL_top_env = &PL_start_env; | |
11406 | ||
11407 | PL_op = proto_perl->Top; | |
11408 | ||
11409 | PL_Sv = Nullsv; | |
11410 | PL_Xpv = (XPV*)NULL; | |
11411 | PL_na = proto_perl->Tna; | |
11412 | ||
11413 | PL_statbuf = proto_perl->Tstatbuf; | |
11414 | PL_statcache = proto_perl->Tstatcache; | |
d2d73c3e AB |
11415 | PL_statgv = gv_dup(proto_perl->Tstatgv, param); |
11416 | PL_statname = sv_dup_inc(proto_perl->Tstatname, param); | |
1d7c1841 GS |
11417 | #ifdef HAS_TIMES |
11418 | PL_timesbuf = proto_perl->Ttimesbuf; | |
11419 | #endif | |
11420 | ||
11421 | PL_tainted = proto_perl->Ttainted; | |
11422 | PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */ | |
d2d73c3e AB |
11423 | PL_rs = sv_dup_inc(proto_perl->Trs, param); |
11424 | PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv, param); | |
11425 | PL_ofs_sv = sv_dup_inc(proto_perl->Tofs_sv, param); | |
11426 | PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv, param); | |
1d7c1841 | 11427 | PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */ |
d2d73c3e AB |
11428 | PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget, param); |
11429 | PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget, param); | |
11430 | PL_formtarget = sv_dup(proto_perl->Tformtarget, param); | |
1d7c1841 GS |
11431 | |
11432 | PL_restartop = proto_perl->Trestartop; | |
11433 | PL_in_eval = proto_perl->Tin_eval; | |
11434 | PL_delaymagic = proto_perl->Tdelaymagic; | |
11435 | PL_dirty = proto_perl->Tdirty; | |
11436 | PL_localizing = proto_perl->Tlocalizing; | |
11437 | ||
14dd3ad8 | 11438 | #ifdef PERL_FLEXIBLE_EXCEPTIONS |
1d7c1841 | 11439 | PL_protect = proto_perl->Tprotect; |
14dd3ad8 | 11440 | #endif |
d2d73c3e | 11441 | PL_errors = sv_dup_inc(proto_perl->Terrors, param); |
dd28f7bb | 11442 | PL_hv_fetch_ent_mh = Nullhe; |
1d7c1841 GS |
11443 | PL_modcount = proto_perl->Tmodcount; |
11444 | PL_lastgotoprobe = Nullop; | |
11445 | PL_dumpindent = proto_perl->Tdumpindent; | |
11446 | ||
11447 | PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl); | |
d2d73c3e AB |
11448 | PL_sortstash = hv_dup(proto_perl->Tsortstash, param); |
11449 | PL_firstgv = gv_dup(proto_perl->Tfirstgv, param); | |
11450 | PL_secondgv = gv_dup(proto_perl->Tsecondgv, param); | |
1d7c1841 GS |
11451 | PL_sortcxix = proto_perl->Tsortcxix; |
11452 | PL_efloatbuf = Nullch; /* reinits on demand */ | |
11453 | PL_efloatsize = 0; /* reinits on demand */ | |
11454 | ||
11455 | /* regex stuff */ | |
11456 | ||
11457 | PL_screamfirst = NULL; | |
11458 | PL_screamnext = NULL; | |
11459 | PL_maxscream = -1; /* reinits on demand */ | |
11460 | PL_lastscream = Nullsv; | |
11461 | ||
11462 | PL_watchaddr = NULL; | |
11463 | PL_watchok = Nullch; | |
11464 | ||
11465 | PL_regdummy = proto_perl->Tregdummy; | |
1d7c1841 GS |
11466 | PL_regprecomp = Nullch; |
11467 | PL_regnpar = 0; | |
11468 | PL_regsize = 0; | |
1d7c1841 GS |
11469 | PL_colorset = 0; /* reinits PL_colors[] */ |
11470 | /*PL_colors[6] = {0,0,0,0,0,0};*/ | |
1d7c1841 GS |
11471 | PL_reginput = Nullch; |
11472 | PL_regbol = Nullch; | |
11473 | PL_regeol = Nullch; | |
11474 | PL_regstartp = (I32*)NULL; | |
11475 | PL_regendp = (I32*)NULL; | |
11476 | PL_reglastparen = (U32*)NULL; | |
11477 | PL_regtill = Nullch; | |
1d7c1841 GS |
11478 | PL_reg_start_tmp = (char**)NULL; |
11479 | PL_reg_start_tmpl = 0; | |
11480 | PL_regdata = (struct reg_data*)NULL; | |
11481 | PL_bostr = Nullch; | |
11482 | PL_reg_flags = 0; | |
11483 | PL_reg_eval_set = 0; | |
11484 | PL_regnarrate = 0; | |
11485 | PL_regprogram = (regnode*)NULL; | |
11486 | PL_regindent = 0; | |
11487 | PL_regcc = (CURCUR*)NULL; | |
11488 | PL_reg_call_cc = (struct re_cc_state*)NULL; | |
11489 | PL_reg_re = (regexp*)NULL; | |
11490 | PL_reg_ganch = Nullch; | |
11491 | PL_reg_sv = Nullsv; | |
53c4c00c | 11492 | PL_reg_match_utf8 = FALSE; |
1d7c1841 GS |
11493 | PL_reg_magic = (MAGIC*)NULL; |
11494 | PL_reg_oldpos = 0; | |
11495 | PL_reg_oldcurpm = (PMOP*)NULL; | |
11496 | PL_reg_curpm = (PMOP*)NULL; | |
11497 | PL_reg_oldsaved = Nullch; | |
11498 | PL_reg_oldsavedlen = 0; | |
ed252734 | 11499 | #ifdef PERL_COPY_ON_WRITE |
504cff3b | 11500 | PL_nrs = Nullsv; |
ed252734 | 11501 | #endif |
1d7c1841 GS |
11502 | PL_reg_maxiter = 0; |
11503 | PL_reg_leftiter = 0; | |
11504 | PL_reg_poscache = Nullch; | |
11505 | PL_reg_poscache_size= 0; | |
11506 | ||
11507 | /* RE engine - function pointers */ | |
11508 | PL_regcompp = proto_perl->Tregcompp; | |
11509 | PL_regexecp = proto_perl->Tregexecp; | |
11510 | PL_regint_start = proto_perl->Tregint_start; | |
11511 | PL_regint_string = proto_perl->Tregint_string; | |
11512 | PL_regfree = proto_perl->Tregfree; | |
11513 | ||
11514 | PL_reginterp_cnt = 0; | |
11515 | PL_reg_starttry = 0; | |
11516 | ||
a2efc822 SC |
11517 | /* Pluggable optimizer */ |
11518 | PL_peepp = proto_perl->Tpeepp; | |
11519 | ||
081fc587 AB |
11520 | PL_stashcache = newHV(); |
11521 | ||
a0739874 DM |
11522 | if (!(flags & CLONEf_KEEP_PTR_TABLE)) { |
11523 | ptr_table_free(PL_ptr_table); | |
11524 | PL_ptr_table = NULL; | |
11525 | } | |
8cf8f3d1 | 11526 | |
f284b03f AMS |
11527 | /* Call the ->CLONE method, if it exists, for each of the stashes |
11528 | identified by sv_dup() above. | |
11529 | */ | |
d2d73c3e AB |
11530 | while(av_len(param->stashes) != -1) { |
11531 | HV* stash = (HV*) av_shift(param->stashes); | |
f284b03f AMS |
11532 | GV* cloner = gv_fetchmethod_autoload(stash, "CLONE", 0); |
11533 | if (cloner && GvCV(cloner)) { | |
11534 | dSP; | |
11535 | ENTER; | |
11536 | SAVETMPS; | |
11537 | PUSHMARK(SP); | |
dc507217 | 11538 | XPUSHs(sv_2mortal(newSVpv(HvNAME(stash), 0))); |
f284b03f AMS |
11539 | PUTBACK; |
11540 | call_sv((SV*)GvCV(cloner), G_DISCARD); | |
11541 | FREETMPS; | |
11542 | LEAVE; | |
11543 | } | |
4a09accc | 11544 | } |
a0739874 | 11545 | |
dc507217 | 11546 | SvREFCNT_dec(param->stashes); |
dc507217 | 11547 | |
1d7c1841 | 11548 | return my_perl; |
1d7c1841 GS |
11549 | } |
11550 | ||
1d7c1841 | 11551 | #endif /* USE_ITHREADS */ |
a0ae6670 | 11552 | |
9f4817db | 11553 | /* |
ccfc67b7 JH |
11554 | =head1 Unicode Support |
11555 | ||
9f4817db JH |
11556 | =for apidoc sv_recode_to_utf8 |
11557 | ||
5d170f3a JH |
11558 | The encoding is assumed to be an Encode object, on entry the PV |
11559 | of the sv is assumed to be octets in that encoding, and the sv | |
11560 | will be converted into Unicode (and UTF-8). | |
9f4817db | 11561 | |
5d170f3a JH |
11562 | If the sv already is UTF-8 (or if it is not POK), or if the encoding |
11563 | is not a reference, nothing is done to the sv. If the encoding is not | |
1768d7eb JH |
11564 | an C<Encode::XS> Encoding object, bad things will happen. |
11565 | (See F<lib/encoding.pm> and L<Encode>). | |
9f4817db | 11566 | |
5d170f3a | 11567 | The PV of the sv is returned. |
9f4817db | 11568 | |
5d170f3a JH |
11569 | =cut */ |
11570 | ||
11571 | char * | |
11572 | Perl_sv_recode_to_utf8(pTHX_ SV *sv, SV *encoding) | |
11573 | { | |
220e2d4e | 11574 | if (SvPOK(sv) && !SvUTF8(sv) && !IN_BYTES && SvROK(encoding)) { |
d0063567 DK |
11575 | SV *uni; |
11576 | STRLEN len; | |
11577 | char *s; | |
11578 | dSP; | |
11579 | ENTER; | |
11580 | SAVETMPS; | |
220e2d4e | 11581 | save_re_context(); |
d0063567 DK |
11582 | PUSHMARK(sp); |
11583 | EXTEND(SP, 3); | |
11584 | XPUSHs(encoding); | |
11585 | XPUSHs(sv); | |
f9893866 NIS |
11586 | /* |
11587 | NI-S 2002/07/09 | |
11588 | Passing sv_yes is wrong - it needs to be or'ed set of constants | |
11589 | for Encode::XS, while UTf-8 decode (currently) assumes a true value means | |
11590 | remove converted chars from source. | |
11591 | ||
11592 | Both will default the value - let them. | |
11593 | ||
d0063567 | 11594 | XPUSHs(&PL_sv_yes); |
f9893866 | 11595 | */ |
d0063567 DK |
11596 | PUTBACK; |
11597 | call_method("decode", G_SCALAR); | |
11598 | SPAGAIN; | |
11599 | uni = POPs; | |
11600 | PUTBACK; | |
11601 | s = SvPV(uni, len); | |
d0063567 DK |
11602 | if (s != SvPVX(sv)) { |
11603 | SvGROW(sv, len + 1); | |
11604 | Move(s, SvPVX(sv), len, char); | |
11605 | SvCUR_set(sv, len); | |
11606 | SvPVX(sv)[len] = 0; | |
11607 | } | |
11608 | FREETMPS; | |
11609 | LEAVE; | |
d0063567 | 11610 | SvUTF8_on(sv); |
f9893866 NIS |
11611 | } |
11612 | return SvPVX(sv); | |
9f4817db JH |
11613 | } |
11614 | ||
220e2d4e IH |
11615 | /* |
11616 | =for apidoc sv_cat_decode | |
11617 | ||
11618 | The encoding is assumed to be an Encode object, the PV of the ssv is | |
11619 | assumed to be octets in that encoding and decoding the input starts | |
11620 | from the position which (PV + *offset) pointed to. The dsv will be | |
11621 | concatenated the decoded UTF-8 string from ssv. Decoding will terminate | |
11622 | when the string tstr appears in decoding output or the input ends on | |
11623 | the PV of the ssv. The value which the offset points will be modified | |
11624 | to the last input position on the ssv. | |
68795e93 | 11625 | |
220e2d4e IH |
11626 | Returns TRUE if the terminator was found, else returns FALSE. |
11627 | ||
11628 | =cut */ | |
11629 | ||
11630 | bool | |
11631 | Perl_sv_cat_decode(pTHX_ SV *dsv, SV *encoding, | |
11632 | SV *ssv, int *offset, char *tstr, int tlen) | |
11633 | { | |
a73e8557 | 11634 | bool ret = FALSE; |
220e2d4e | 11635 | if (SvPOK(ssv) && SvPOK(dsv) && SvROK(encoding) && offset) { |
220e2d4e IH |
11636 | SV *offsv; |
11637 | dSP; | |
11638 | ENTER; | |
11639 | SAVETMPS; | |
11640 | save_re_context(); | |
11641 | PUSHMARK(sp); | |
11642 | EXTEND(SP, 6); | |
11643 | XPUSHs(encoding); | |
11644 | XPUSHs(dsv); | |
11645 | XPUSHs(ssv); | |
11646 | XPUSHs(offsv = sv_2mortal(newSViv(*offset))); | |
11647 | XPUSHs(sv_2mortal(newSVpvn(tstr, tlen))); | |
11648 | PUTBACK; | |
11649 | call_method("cat_decode", G_SCALAR); | |
11650 | SPAGAIN; | |
11651 | ret = SvTRUE(TOPs); | |
11652 | *offset = SvIV(offsv); | |
11653 | PUTBACK; | |
11654 | FREETMPS; | |
11655 | LEAVE; | |
220e2d4e | 11656 | } |
a73e8557 JH |
11657 | else |
11658 | Perl_croak(aTHX_ "Invalid argument to sv_cat_decode"); | |
11659 | return ret; | |
220e2d4e | 11660 | } |
f9893866 | 11661 |