Commit | Line | Data |
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a0d0e21e | 1 | /* sv.c |
79072805 | 2 | * |
4c79ee7a | 3 | * Copyright (c) 1991-2003, Larry Wall |
79072805 LW |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public | |
6 | * License or the Artistic License, as specified in the README file. | |
7 | * | |
a0d0e21e | 8 | * "I wonder what the Entish is for 'yes' and 'no'," he thought. |
645c22ef DM |
9 | * |
10 | * | |
5e045b90 AMS |
11 | * This file contains the code that creates, manipulates and destroys |
12 | * scalar values (SVs). The other types (AV, HV, GV, etc.) reuse the | |
13 | * structure of an SV, so their creation and destruction is handled | |
14 | * here; higher-level functions are in av.c, hv.c, and so on. Opcode | |
15 | * level functions (eg. substr, split, join) for each of the types are | |
16 | * in the pp*.c files. | |
79072805 LW |
17 | */ |
18 | ||
19 | #include "EXTERN.h" | |
864dbfa3 | 20 | #define PERL_IN_SV_C |
79072805 | 21 | #include "perl.h" |
d2f185dc | 22 | #include "regcomp.h" |
79072805 | 23 | |
51371543 | 24 | #define FCALL *f |
2c5424a7 | 25 | |
765f542d NC |
26 | #ifdef PERL_COPY_ON_WRITE |
27 | #define SV_COW_NEXT_SV(sv) INT2PTR(SV *,SvUVX(sv)) | |
a29f6d03 | 28 | #define SV_COW_NEXT_SV_SET(current,next) SvUVX(current) = PTR2UV(next) |
b5ccf5f2 | 29 | /* This is a pessimistic view. Scalar must be purely a read-write PV to copy- |
765f542d | 30 | on-write. */ |
765f542d | 31 | #endif |
645c22ef DM |
32 | |
33 | /* ============================================================================ | |
34 | ||
35 | =head1 Allocation and deallocation of SVs. | |
36 | ||
5e045b90 AMS |
37 | An SV (or AV, HV, etc.) is allocated in two parts: the head (struct sv, |
38 | av, hv...) contains type and reference count information, as well as a | |
39 | pointer to the body (struct xrv, xpv, xpviv...), which contains fields | |
40 | specific to each type. | |
41 | ||
42 | Normally, this allocation is done using arenas, which are approximately | |
43 | 1K chunks of memory parcelled up into N heads or bodies. The first slot | |
44 | in each arena is reserved, and is used to hold a link to the next arena. | |
45 | In the case of heads, the unused first slot also contains some flags and | |
46 | a note of the number of slots. Snaked through each arena chain is a | |
47 | linked list of free items; when this becomes empty, an extra arena is | |
48 | allocated and divided up into N items which are threaded into the free | |
49 | list. | |
645c22ef DM |
50 | |
51 | The following global variables are associated with arenas: | |
52 | ||
53 | PL_sv_arenaroot pointer to list of SV arenas | |
54 | PL_sv_root pointer to list of free SV structures | |
55 | ||
56 | PL_foo_arenaroot pointer to list of foo arenas, | |
57 | PL_foo_root pointer to list of free foo bodies | |
58 | ... for foo in xiv, xnv, xrv, xpv etc. | |
59 | ||
60 | Note that some of the larger and more rarely used body types (eg xpvio) | |
61 | are not allocated using arenas, but are instead just malloc()/free()ed as | |
62 | required. Also, if PURIFY is defined, arenas are abandoned altogether, | |
63 | with all items individually malloc()ed. In addition, a few SV heads are | |
64 | not allocated from an arena, but are instead directly created as static | |
65 | or auto variables, eg PL_sv_undef. | |
66 | ||
67 | The SV arena serves the secondary purpose of allowing still-live SVs | |
68 | to be located and destroyed during final cleanup. | |
69 | ||
70 | At the lowest level, the macros new_SV() and del_SV() grab and free | |
71 | an SV head. (If debugging with -DD, del_SV() calls the function S_del_sv() | |
72 | to return the SV to the free list with error checking.) new_SV() calls | |
73 | more_sv() / sv_add_arena() to add an extra arena if the free list is empty. | |
74 | SVs in the free list have their SvTYPE field set to all ones. | |
75 | ||
76 | Similarly, there are macros new_XIV()/del_XIV(), new_XNV()/del_XNV() etc | |
77 | that allocate and return individual body types. Normally these are mapped | |
ff276b08 RG |
78 | to the arena-manipulating functions new_xiv()/del_xiv() etc, but may be |
79 | instead mapped directly to malloc()/free() if PURIFY is defined. The | |
645c22ef DM |
80 | new/del functions remove from, or add to, the appropriate PL_foo_root |
81 | list, and call more_xiv() etc to add a new arena if the list is empty. | |
82 | ||
ff276b08 | 83 | At the time of very final cleanup, sv_free_arenas() is called from |
645c22ef DM |
84 | perl_destruct() to physically free all the arenas allocated since the |
85 | start of the interpreter. Note that this also clears PL_he_arenaroot, | |
86 | which is otherwise dealt with in hv.c. | |
87 | ||
88 | Manipulation of any of the PL_*root pointers is protected by enclosing | |
89 | LOCK_SV_MUTEX; ... UNLOCK_SV_MUTEX calls which should Do the Right Thing | |
90 | if threads are enabled. | |
91 | ||
92 | The function visit() scans the SV arenas list, and calls a specified | |
93 | function for each SV it finds which is still live - ie which has an SvTYPE | |
94 | other than all 1's, and a non-zero SvREFCNT. visit() is used by the | |
95 | following functions (specified as [function that calls visit()] / [function | |
96 | called by visit() for each SV]): | |
97 | ||
98 | sv_report_used() / do_report_used() | |
99 | dump all remaining SVs (debugging aid) | |
100 | ||
101 | sv_clean_objs() / do_clean_objs(),do_clean_named_objs() | |
102 | Attempt to free all objects pointed to by RVs, | |
103 | and, unless DISABLE_DESTRUCTOR_KLUDGE is defined, | |
104 | try to do the same for all objects indirectly | |
105 | referenced by typeglobs too. Called once from | |
106 | perl_destruct(), prior to calling sv_clean_all() | |
107 | below. | |
108 | ||
109 | sv_clean_all() / do_clean_all() | |
110 | SvREFCNT_dec(sv) each remaining SV, possibly | |
111 | triggering an sv_free(). It also sets the | |
112 | SVf_BREAK flag on the SV to indicate that the | |
113 | refcnt has been artificially lowered, and thus | |
114 | stopping sv_free() from giving spurious warnings | |
115 | about SVs which unexpectedly have a refcnt | |
116 | of zero. called repeatedly from perl_destruct() | |
117 | until there are no SVs left. | |
118 | ||
119 | =head2 Summary | |
120 | ||
121 | Private API to rest of sv.c | |
122 | ||
123 | new_SV(), del_SV(), | |
124 | ||
125 | new_XIV(), del_XIV(), | |
126 | new_XNV(), del_XNV(), | |
127 | etc | |
128 | ||
129 | Public API: | |
130 | ||
8cf8f3d1 | 131 | sv_report_used(), sv_clean_objs(), sv_clean_all(), sv_free_arenas() |
645c22ef DM |
132 | |
133 | ||
134 | =cut | |
135 | ||
136 | ============================================================================ */ | |
137 | ||
138 | ||
51371543 | 139 | |
4561caa4 CS |
140 | /* |
141 | * "A time to plant, and a time to uproot what was planted..." | |
142 | */ | |
143 | ||
053fc874 GS |
144 | #define plant_SV(p) \ |
145 | STMT_START { \ | |
146 | SvANY(p) = (void *)PL_sv_root; \ | |
147 | SvFLAGS(p) = SVTYPEMASK; \ | |
148 | PL_sv_root = (p); \ | |
149 | --PL_sv_count; \ | |
150 | } STMT_END | |
a0d0e21e | 151 | |
fba3b22e | 152 | /* sv_mutex must be held while calling uproot_SV() */ |
053fc874 GS |
153 | #define uproot_SV(p) \ |
154 | STMT_START { \ | |
155 | (p) = PL_sv_root; \ | |
156 | PL_sv_root = (SV*)SvANY(p); \ | |
157 | ++PL_sv_count; \ | |
158 | } STMT_END | |
159 | ||
645c22ef DM |
160 | |
161 | /* new_SV(): return a new, empty SV head */ | |
162 | ||
eba0f806 DM |
163 | #ifdef DEBUG_LEAKING_SCALARS |
164 | /* provide a real function for a debugger to play with */ | |
165 | STATIC SV* | |
166 | S_new_SV(pTHX) | |
167 | { | |
168 | SV* sv; | |
169 | ||
170 | LOCK_SV_MUTEX; | |
171 | if (PL_sv_root) | |
172 | uproot_SV(sv); | |
173 | else | |
174 | sv = more_sv(); | |
175 | UNLOCK_SV_MUTEX; | |
176 | SvANY(sv) = 0; | |
177 | SvREFCNT(sv) = 1; | |
178 | SvFLAGS(sv) = 0; | |
179 | return sv; | |
180 | } | |
181 | # define new_SV(p) (p)=S_new_SV(aTHX) | |
182 | ||
183 | #else | |
184 | # define new_SV(p) \ | |
053fc874 GS |
185 | STMT_START { \ |
186 | LOCK_SV_MUTEX; \ | |
187 | if (PL_sv_root) \ | |
188 | uproot_SV(p); \ | |
189 | else \ | |
190 | (p) = more_sv(); \ | |
191 | UNLOCK_SV_MUTEX; \ | |
192 | SvANY(p) = 0; \ | |
193 | SvREFCNT(p) = 1; \ | |
194 | SvFLAGS(p) = 0; \ | |
195 | } STMT_END | |
eba0f806 | 196 | #endif |
463ee0b2 | 197 | |
645c22ef DM |
198 | |
199 | /* del_SV(): return an empty SV head to the free list */ | |
200 | ||
a0d0e21e | 201 | #ifdef DEBUGGING |
4561caa4 | 202 | |
053fc874 GS |
203 | #define del_SV(p) \ |
204 | STMT_START { \ | |
205 | LOCK_SV_MUTEX; \ | |
aea4f609 | 206 | if (DEBUG_D_TEST) \ |
053fc874 GS |
207 | del_sv(p); \ |
208 | else \ | |
209 | plant_SV(p); \ | |
210 | UNLOCK_SV_MUTEX; \ | |
211 | } STMT_END | |
a0d0e21e | 212 | |
76e3520e | 213 | STATIC void |
cea2e8a9 | 214 | S_del_sv(pTHX_ SV *p) |
463ee0b2 | 215 | { |
aea4f609 | 216 | if (DEBUG_D_TEST) { |
4633a7c4 | 217 | SV* sva; |
a0d0e21e LW |
218 | SV* sv; |
219 | SV* svend; | |
220 | int ok = 0; | |
3280af22 | 221 | for (sva = PL_sv_arenaroot; sva; sva = (SV *) SvANY(sva)) { |
4633a7c4 LW |
222 | sv = sva + 1; |
223 | svend = &sva[SvREFCNT(sva)]; | |
a0d0e21e LW |
224 | if (p >= sv && p < svend) |
225 | ok = 1; | |
226 | } | |
227 | if (!ok) { | |
0453d815 | 228 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 229 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
1d7c1841 GS |
230 | "Attempt to free non-arena SV: 0x%"UVxf, |
231 | PTR2UV(p)); | |
a0d0e21e LW |
232 | return; |
233 | } | |
234 | } | |
4561caa4 | 235 | plant_SV(p); |
463ee0b2 | 236 | } |
a0d0e21e | 237 | |
4561caa4 CS |
238 | #else /* ! DEBUGGING */ |
239 | ||
240 | #define del_SV(p) plant_SV(p) | |
241 | ||
242 | #endif /* DEBUGGING */ | |
463ee0b2 | 243 | |
645c22ef DM |
244 | |
245 | /* | |
ccfc67b7 JH |
246 | =head1 SV Manipulation Functions |
247 | ||
645c22ef DM |
248 | =for apidoc sv_add_arena |
249 | ||
250 | Given a chunk of memory, link it to the head of the list of arenas, | |
251 | and split it into a list of free SVs. | |
252 | ||
253 | =cut | |
254 | */ | |
255 | ||
4633a7c4 | 256 | void |
864dbfa3 | 257 | Perl_sv_add_arena(pTHX_ char *ptr, U32 size, U32 flags) |
463ee0b2 | 258 | { |
4633a7c4 | 259 | SV* sva = (SV*)ptr; |
463ee0b2 LW |
260 | register SV* sv; |
261 | register SV* svend; | |
14dd3ad8 | 262 | Zero(ptr, size, char); |
4633a7c4 LW |
263 | |
264 | /* The first SV in an arena isn't an SV. */ | |
3280af22 | 265 | SvANY(sva) = (void *) PL_sv_arenaroot; /* ptr to next arena */ |
4633a7c4 LW |
266 | SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */ |
267 | SvFLAGS(sva) = flags; /* FAKE if not to be freed */ | |
268 | ||
3280af22 NIS |
269 | PL_sv_arenaroot = sva; |
270 | PL_sv_root = sva + 1; | |
4633a7c4 LW |
271 | |
272 | svend = &sva[SvREFCNT(sva) - 1]; | |
273 | sv = sva + 1; | |
463ee0b2 | 274 | while (sv < svend) { |
a0d0e21e | 275 | SvANY(sv) = (void *)(SV*)(sv + 1); |
8990e307 | 276 | SvFLAGS(sv) = SVTYPEMASK; |
463ee0b2 LW |
277 | sv++; |
278 | } | |
279 | SvANY(sv) = 0; | |
4633a7c4 LW |
280 | SvFLAGS(sv) = SVTYPEMASK; |
281 | } | |
282 | ||
645c22ef DM |
283 | /* make some more SVs by adding another arena */ |
284 | ||
fba3b22e | 285 | /* sv_mutex must be held while calling more_sv() */ |
76e3520e | 286 | STATIC SV* |
cea2e8a9 | 287 | S_more_sv(pTHX) |
4633a7c4 | 288 | { |
4561caa4 CS |
289 | register SV* sv; |
290 | ||
3280af22 NIS |
291 | if (PL_nice_chunk) { |
292 | sv_add_arena(PL_nice_chunk, PL_nice_chunk_size, 0); | |
293 | PL_nice_chunk = Nullch; | |
30ad99e7 | 294 | PL_nice_chunk_size = 0; |
c07a80fd | 295 | } |
1edc1566 | 296 | else { |
297 | char *chunk; /* must use New here to match call to */ | |
298 | New(704,chunk,1008,char); /* Safefree() in sv_free_arenas() */ | |
299 | sv_add_arena(chunk, 1008, 0); | |
300 | } | |
4561caa4 CS |
301 | uproot_SV(sv); |
302 | return sv; | |
463ee0b2 LW |
303 | } |
304 | ||
ff276b08 | 305 | /* visit(): call the named function for each non-free SV in the arenas. */ |
645c22ef | 306 | |
5226ed68 | 307 | STATIC I32 |
cea2e8a9 | 308 | S_visit(pTHX_ SVFUNC_t f) |
8990e307 | 309 | { |
4633a7c4 | 310 | SV* sva; |
8990e307 LW |
311 | SV* sv; |
312 | register SV* svend; | |
5226ed68 | 313 | I32 visited = 0; |
8990e307 | 314 | |
3280af22 | 315 | for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) { |
4633a7c4 | 316 | svend = &sva[SvREFCNT(sva)]; |
4561caa4 | 317 | for (sv = sva + 1; sv < svend; ++sv) { |
f25c30a3 | 318 | if (SvTYPE(sv) != SVTYPEMASK && SvREFCNT(sv)) { |
acfe0abc | 319 | (FCALL)(aTHX_ sv); |
5226ed68 JH |
320 | ++visited; |
321 | } | |
8990e307 LW |
322 | } |
323 | } | |
5226ed68 | 324 | return visited; |
8990e307 LW |
325 | } |
326 | ||
758a08c3 JH |
327 | #ifdef DEBUGGING |
328 | ||
645c22ef DM |
329 | /* called by sv_report_used() for each live SV */ |
330 | ||
331 | static void | |
acfe0abc | 332 | do_report_used(pTHX_ SV *sv) |
645c22ef DM |
333 | { |
334 | if (SvTYPE(sv) != SVTYPEMASK) { | |
335 | PerlIO_printf(Perl_debug_log, "****\n"); | |
336 | sv_dump(sv); | |
337 | } | |
338 | } | |
758a08c3 | 339 | #endif |
645c22ef DM |
340 | |
341 | /* | |
342 | =for apidoc sv_report_used | |
343 | ||
344 | Dump the contents of all SVs not yet freed. (Debugging aid). | |
345 | ||
346 | =cut | |
347 | */ | |
348 | ||
8990e307 | 349 | void |
864dbfa3 | 350 | Perl_sv_report_used(pTHX) |
4561caa4 | 351 | { |
ff270d3a | 352 | #ifdef DEBUGGING |
0b94c7bb | 353 | visit(do_report_used); |
ff270d3a | 354 | #endif |
4561caa4 CS |
355 | } |
356 | ||
645c22ef DM |
357 | /* called by sv_clean_objs() for each live SV */ |
358 | ||
359 | static void | |
acfe0abc | 360 | do_clean_objs(pTHX_ SV *sv) |
645c22ef DM |
361 | { |
362 | SV* rv; | |
363 | ||
364 | if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) { | |
365 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv))); | |
366 | if (SvWEAKREF(sv)) { | |
367 | sv_del_backref(sv); | |
368 | SvWEAKREF_off(sv); | |
369 | SvRV(sv) = 0; | |
370 | } else { | |
371 | SvROK_off(sv); | |
372 | SvRV(sv) = 0; | |
373 | SvREFCNT_dec(rv); | |
374 | } | |
375 | } | |
376 | ||
377 | /* XXX Might want to check arrays, etc. */ | |
378 | } | |
379 | ||
380 | /* called by sv_clean_objs() for each live SV */ | |
381 | ||
382 | #ifndef DISABLE_DESTRUCTOR_KLUDGE | |
383 | static void | |
acfe0abc | 384 | do_clean_named_objs(pTHX_ SV *sv) |
645c22ef DM |
385 | { |
386 | if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) { | |
387 | if ( SvOBJECT(GvSV(sv)) || | |
388 | (GvAV(sv) && SvOBJECT(GvAV(sv))) || | |
389 | (GvHV(sv) && SvOBJECT(GvHV(sv))) || | |
390 | (GvIO(sv) && SvOBJECT(GvIO(sv))) || | |
391 | (GvCV(sv) && SvOBJECT(GvCV(sv))) ) | |
392 | { | |
393 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv))); | |
394 | SvREFCNT_dec(sv); | |
395 | } | |
396 | } | |
397 | } | |
398 | #endif | |
399 | ||
400 | /* | |
401 | =for apidoc sv_clean_objs | |
402 | ||
403 | Attempt to destroy all objects not yet freed | |
404 | ||
405 | =cut | |
406 | */ | |
407 | ||
4561caa4 | 408 | void |
864dbfa3 | 409 | Perl_sv_clean_objs(pTHX) |
4561caa4 | 410 | { |
3280af22 | 411 | PL_in_clean_objs = TRUE; |
0b94c7bb | 412 | visit(do_clean_objs); |
4561caa4 | 413 | #ifndef DISABLE_DESTRUCTOR_KLUDGE |
2d0f3c12 | 414 | /* some barnacles may yet remain, clinging to typeglobs */ |
0b94c7bb | 415 | visit(do_clean_named_objs); |
4561caa4 | 416 | #endif |
3280af22 | 417 | PL_in_clean_objs = FALSE; |
4561caa4 CS |
418 | } |
419 | ||
645c22ef DM |
420 | /* called by sv_clean_all() for each live SV */ |
421 | ||
422 | static void | |
acfe0abc | 423 | do_clean_all(pTHX_ SV *sv) |
645c22ef DM |
424 | { |
425 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) )); | |
426 | SvFLAGS(sv) |= SVf_BREAK; | |
427 | SvREFCNT_dec(sv); | |
428 | } | |
429 | ||
430 | /* | |
431 | =for apidoc sv_clean_all | |
432 | ||
433 | Decrement the refcnt of each remaining SV, possibly triggering a | |
434 | cleanup. This function may have to be called multiple times to free | |
ff276b08 | 435 | SVs which are in complex self-referential hierarchies. |
645c22ef DM |
436 | |
437 | =cut | |
438 | */ | |
439 | ||
5226ed68 | 440 | I32 |
864dbfa3 | 441 | Perl_sv_clean_all(pTHX) |
8990e307 | 442 | { |
5226ed68 | 443 | I32 cleaned; |
3280af22 | 444 | PL_in_clean_all = TRUE; |
5226ed68 | 445 | cleaned = visit(do_clean_all); |
3280af22 | 446 | PL_in_clean_all = FALSE; |
5226ed68 | 447 | return cleaned; |
8990e307 | 448 | } |
463ee0b2 | 449 | |
645c22ef DM |
450 | /* |
451 | =for apidoc sv_free_arenas | |
452 | ||
453 | Deallocate the memory used by all arenas. Note that all the individual SV | |
454 | heads and bodies within the arenas must already have been freed. | |
455 | ||
456 | =cut | |
457 | */ | |
458 | ||
4633a7c4 | 459 | void |
864dbfa3 | 460 | Perl_sv_free_arenas(pTHX) |
4633a7c4 LW |
461 | { |
462 | SV* sva; | |
463 | SV* svanext; | |
612f20c3 | 464 | XPV *arena, *arenanext; |
4633a7c4 LW |
465 | |
466 | /* Free arenas here, but be careful about fake ones. (We assume | |
467 | contiguity of the fake ones with the corresponding real ones.) */ | |
468 | ||
3280af22 | 469 | for (sva = PL_sv_arenaroot; sva; sva = svanext) { |
4633a7c4 LW |
470 | svanext = (SV*) SvANY(sva); |
471 | while (svanext && SvFAKE(svanext)) | |
472 | svanext = (SV*) SvANY(svanext); | |
473 | ||
474 | if (!SvFAKE(sva)) | |
1edc1566 | 475 | Safefree((void *)sva); |
4633a7c4 | 476 | } |
5f05dabc | 477 | |
612f20c3 GS |
478 | for (arena = PL_xiv_arenaroot; arena; arena = arenanext) { |
479 | arenanext = (XPV*)arena->xpv_pv; | |
480 | Safefree(arena); | |
481 | } | |
482 | PL_xiv_arenaroot = 0; | |
483 | ||
484 | for (arena = PL_xnv_arenaroot; arena; arena = arenanext) { | |
485 | arenanext = (XPV*)arena->xpv_pv; | |
486 | Safefree(arena); | |
487 | } | |
488 | PL_xnv_arenaroot = 0; | |
489 | ||
490 | for (arena = PL_xrv_arenaroot; arena; arena = arenanext) { | |
491 | arenanext = (XPV*)arena->xpv_pv; | |
492 | Safefree(arena); | |
493 | } | |
494 | PL_xrv_arenaroot = 0; | |
495 | ||
496 | for (arena = PL_xpv_arenaroot; arena; arena = arenanext) { | |
497 | arenanext = (XPV*)arena->xpv_pv; | |
498 | Safefree(arena); | |
499 | } | |
500 | PL_xpv_arenaroot = 0; | |
501 | ||
502 | for (arena = (XPV*)PL_xpviv_arenaroot; arena; arena = arenanext) { | |
503 | arenanext = (XPV*)arena->xpv_pv; | |
504 | Safefree(arena); | |
505 | } | |
506 | PL_xpviv_arenaroot = 0; | |
507 | ||
508 | for (arena = (XPV*)PL_xpvnv_arenaroot; arena; arena = arenanext) { | |
509 | arenanext = (XPV*)arena->xpv_pv; | |
510 | Safefree(arena); | |
511 | } | |
512 | PL_xpvnv_arenaroot = 0; | |
513 | ||
514 | for (arena = (XPV*)PL_xpvcv_arenaroot; arena; arena = arenanext) { | |
515 | arenanext = (XPV*)arena->xpv_pv; | |
516 | Safefree(arena); | |
517 | } | |
518 | PL_xpvcv_arenaroot = 0; | |
519 | ||
520 | for (arena = (XPV*)PL_xpvav_arenaroot; arena; arena = arenanext) { | |
521 | arenanext = (XPV*)arena->xpv_pv; | |
522 | Safefree(arena); | |
523 | } | |
524 | PL_xpvav_arenaroot = 0; | |
525 | ||
526 | for (arena = (XPV*)PL_xpvhv_arenaroot; arena; arena = arenanext) { | |
527 | arenanext = (XPV*)arena->xpv_pv; | |
528 | Safefree(arena); | |
529 | } | |
530 | PL_xpvhv_arenaroot = 0; | |
531 | ||
532 | for (arena = (XPV*)PL_xpvmg_arenaroot; arena; arena = arenanext) { | |
533 | arenanext = (XPV*)arena->xpv_pv; | |
534 | Safefree(arena); | |
535 | } | |
536 | PL_xpvmg_arenaroot = 0; | |
537 | ||
538 | for (arena = (XPV*)PL_xpvlv_arenaroot; arena; arena = arenanext) { | |
539 | arenanext = (XPV*)arena->xpv_pv; | |
540 | Safefree(arena); | |
541 | } | |
542 | PL_xpvlv_arenaroot = 0; | |
543 | ||
544 | for (arena = (XPV*)PL_xpvbm_arenaroot; arena; arena = arenanext) { | |
545 | arenanext = (XPV*)arena->xpv_pv; | |
546 | Safefree(arena); | |
547 | } | |
548 | PL_xpvbm_arenaroot = 0; | |
549 | ||
550 | for (arena = (XPV*)PL_he_arenaroot; arena; arena = arenanext) { | |
551 | arenanext = (XPV*)arena->xpv_pv; | |
552 | Safefree(arena); | |
553 | } | |
554 | PL_he_arenaroot = 0; | |
555 | ||
3280af22 NIS |
556 | if (PL_nice_chunk) |
557 | Safefree(PL_nice_chunk); | |
558 | PL_nice_chunk = Nullch; | |
559 | PL_nice_chunk_size = 0; | |
560 | PL_sv_arenaroot = 0; | |
561 | PL_sv_root = 0; | |
4633a7c4 LW |
562 | } |
563 | ||
645c22ef DM |
564 | /* |
565 | =for apidoc report_uninit | |
566 | ||
567 | Print appropriate "Use of uninitialized variable" warning | |
568 | ||
569 | =cut | |
570 | */ | |
571 | ||
1d7c1841 GS |
572 | void |
573 | Perl_report_uninit(pTHX) | |
574 | { | |
575 | if (PL_op) | |
9014280d | 576 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, |
53e06cf0 | 577 | " in ", OP_DESC(PL_op)); |
1d7c1841 | 578 | else |
9014280d | 579 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, "", ""); |
1d7c1841 GS |
580 | } |
581 | ||
645c22ef DM |
582 | /* grab a new IV body from the free list, allocating more if necessary */ |
583 | ||
76e3520e | 584 | STATIC XPVIV* |
cea2e8a9 | 585 | S_new_xiv(pTHX) |
463ee0b2 | 586 | { |
ea7c11a3 | 587 | IV* xiv; |
cbe51380 GS |
588 | LOCK_SV_MUTEX; |
589 | if (!PL_xiv_root) | |
590 | more_xiv(); | |
591 | xiv = PL_xiv_root; | |
592 | /* | |
593 | * See comment in more_xiv() -- RAM. | |
594 | */ | |
595 | PL_xiv_root = *(IV**)xiv; | |
596 | UNLOCK_SV_MUTEX; | |
597 | return (XPVIV*)((char*)xiv - STRUCT_OFFSET(XPVIV, xiv_iv)); | |
463ee0b2 LW |
598 | } |
599 | ||
645c22ef DM |
600 | /* return an IV body to the free list */ |
601 | ||
76e3520e | 602 | STATIC void |
cea2e8a9 | 603 | S_del_xiv(pTHX_ XPVIV *p) |
463ee0b2 | 604 | { |
23e6a22f | 605 | IV* xiv = (IV*)((char*)(p) + STRUCT_OFFSET(XPVIV, xiv_iv)); |
cbe51380 | 606 | LOCK_SV_MUTEX; |
3280af22 NIS |
607 | *(IV**)xiv = PL_xiv_root; |
608 | PL_xiv_root = xiv; | |
cbe51380 | 609 | UNLOCK_SV_MUTEX; |
463ee0b2 LW |
610 | } |
611 | ||
645c22ef DM |
612 | /* allocate another arena's worth of IV bodies */ |
613 | ||
cbe51380 | 614 | STATIC void |
cea2e8a9 | 615 | S_more_xiv(pTHX) |
463ee0b2 | 616 | { |
ea7c11a3 SM |
617 | register IV* xiv; |
618 | register IV* xivend; | |
8c52afec IZ |
619 | XPV* ptr; |
620 | New(705, ptr, 1008/sizeof(XPV), XPV); | |
645c22ef | 621 | ptr->xpv_pv = (char*)PL_xiv_arenaroot; /* linked list of xiv arenas */ |
3280af22 | 622 | PL_xiv_arenaroot = ptr; /* to keep Purify happy */ |
a0d0e21e | 623 | |
ea7c11a3 SM |
624 | xiv = (IV*) ptr; |
625 | xivend = &xiv[1008 / sizeof(IV) - 1]; | |
645c22ef | 626 | xiv += (sizeof(XPV) - 1) / sizeof(IV) + 1; /* fudge by size of XPV */ |
3280af22 | 627 | PL_xiv_root = xiv; |
463ee0b2 | 628 | while (xiv < xivend) { |
ea7c11a3 | 629 | *(IV**)xiv = (IV *)(xiv + 1); |
463ee0b2 LW |
630 | xiv++; |
631 | } | |
ea7c11a3 | 632 | *(IV**)xiv = 0; |
463ee0b2 LW |
633 | } |
634 | ||
645c22ef DM |
635 | /* grab a new NV body from the free list, allocating more if necessary */ |
636 | ||
76e3520e | 637 | STATIC XPVNV* |
cea2e8a9 | 638 | S_new_xnv(pTHX) |
463ee0b2 | 639 | { |
65202027 | 640 | NV* xnv; |
cbe51380 GS |
641 | LOCK_SV_MUTEX; |
642 | if (!PL_xnv_root) | |
643 | more_xnv(); | |
644 | xnv = PL_xnv_root; | |
65202027 | 645 | PL_xnv_root = *(NV**)xnv; |
cbe51380 GS |
646 | UNLOCK_SV_MUTEX; |
647 | return (XPVNV*)((char*)xnv - STRUCT_OFFSET(XPVNV, xnv_nv)); | |
463ee0b2 LW |
648 | } |
649 | ||
645c22ef DM |
650 | /* return an NV body to the free list */ |
651 | ||
76e3520e | 652 | STATIC void |
cea2e8a9 | 653 | S_del_xnv(pTHX_ XPVNV *p) |
463ee0b2 | 654 | { |
65202027 | 655 | NV* xnv = (NV*)((char*)(p) + STRUCT_OFFSET(XPVNV, xnv_nv)); |
cbe51380 | 656 | LOCK_SV_MUTEX; |
65202027 | 657 | *(NV**)xnv = PL_xnv_root; |
3280af22 | 658 | PL_xnv_root = xnv; |
cbe51380 | 659 | UNLOCK_SV_MUTEX; |
463ee0b2 LW |
660 | } |
661 | ||
645c22ef DM |
662 | /* allocate another arena's worth of NV bodies */ |
663 | ||
cbe51380 | 664 | STATIC void |
cea2e8a9 | 665 | S_more_xnv(pTHX) |
463ee0b2 | 666 | { |
65202027 DS |
667 | register NV* xnv; |
668 | register NV* xnvend; | |
612f20c3 GS |
669 | XPV *ptr; |
670 | New(711, ptr, 1008/sizeof(XPV), XPV); | |
671 | ptr->xpv_pv = (char*)PL_xnv_arenaroot; | |
672 | PL_xnv_arenaroot = ptr; | |
673 | ||
674 | xnv = (NV*) ptr; | |
65202027 DS |
675 | xnvend = &xnv[1008 / sizeof(NV) - 1]; |
676 | xnv += (sizeof(XPVIV) - 1) / sizeof(NV) + 1; /* fudge by sizeof XPVIV */ | |
3280af22 | 677 | PL_xnv_root = xnv; |
463ee0b2 | 678 | while (xnv < xnvend) { |
65202027 | 679 | *(NV**)xnv = (NV*)(xnv + 1); |
463ee0b2 LW |
680 | xnv++; |
681 | } | |
65202027 | 682 | *(NV**)xnv = 0; |
463ee0b2 LW |
683 | } |
684 | ||
645c22ef DM |
685 | /* grab a new struct xrv from the free list, allocating more if necessary */ |
686 | ||
76e3520e | 687 | STATIC XRV* |
cea2e8a9 | 688 | S_new_xrv(pTHX) |
ed6116ce LW |
689 | { |
690 | XRV* xrv; | |
cbe51380 GS |
691 | LOCK_SV_MUTEX; |
692 | if (!PL_xrv_root) | |
693 | more_xrv(); | |
694 | xrv = PL_xrv_root; | |
695 | PL_xrv_root = (XRV*)xrv->xrv_rv; | |
696 | UNLOCK_SV_MUTEX; | |
697 | return xrv; | |
ed6116ce LW |
698 | } |
699 | ||
645c22ef DM |
700 | /* return a struct xrv to the free list */ |
701 | ||
76e3520e | 702 | STATIC void |
cea2e8a9 | 703 | S_del_xrv(pTHX_ XRV *p) |
ed6116ce | 704 | { |
cbe51380 | 705 | LOCK_SV_MUTEX; |
3280af22 NIS |
706 | p->xrv_rv = (SV*)PL_xrv_root; |
707 | PL_xrv_root = p; | |
cbe51380 | 708 | UNLOCK_SV_MUTEX; |
ed6116ce LW |
709 | } |
710 | ||
645c22ef DM |
711 | /* allocate another arena's worth of struct xrv */ |
712 | ||
cbe51380 | 713 | STATIC void |
cea2e8a9 | 714 | S_more_xrv(pTHX) |
ed6116ce | 715 | { |
ed6116ce LW |
716 | register XRV* xrv; |
717 | register XRV* xrvend; | |
612f20c3 GS |
718 | XPV *ptr; |
719 | New(712, ptr, 1008/sizeof(XPV), XPV); | |
720 | ptr->xpv_pv = (char*)PL_xrv_arenaroot; | |
721 | PL_xrv_arenaroot = ptr; | |
722 | ||
723 | xrv = (XRV*) ptr; | |
ed6116ce | 724 | xrvend = &xrv[1008 / sizeof(XRV) - 1]; |
612f20c3 GS |
725 | xrv += (sizeof(XPV) - 1) / sizeof(XRV) + 1; |
726 | PL_xrv_root = xrv; | |
ed6116ce LW |
727 | while (xrv < xrvend) { |
728 | xrv->xrv_rv = (SV*)(xrv + 1); | |
729 | xrv++; | |
730 | } | |
731 | xrv->xrv_rv = 0; | |
ed6116ce LW |
732 | } |
733 | ||
645c22ef DM |
734 | /* grab a new struct xpv from the free list, allocating more if necessary */ |
735 | ||
76e3520e | 736 | STATIC XPV* |
cea2e8a9 | 737 | S_new_xpv(pTHX) |
463ee0b2 LW |
738 | { |
739 | XPV* xpv; | |
cbe51380 GS |
740 | LOCK_SV_MUTEX; |
741 | if (!PL_xpv_root) | |
742 | more_xpv(); | |
743 | xpv = PL_xpv_root; | |
744 | PL_xpv_root = (XPV*)xpv->xpv_pv; | |
745 | UNLOCK_SV_MUTEX; | |
746 | return xpv; | |
463ee0b2 LW |
747 | } |
748 | ||
645c22ef DM |
749 | /* return a struct xpv to the free list */ |
750 | ||
76e3520e | 751 | STATIC void |
cea2e8a9 | 752 | S_del_xpv(pTHX_ XPV *p) |
463ee0b2 | 753 | { |
cbe51380 | 754 | LOCK_SV_MUTEX; |
3280af22 NIS |
755 | p->xpv_pv = (char*)PL_xpv_root; |
756 | PL_xpv_root = p; | |
cbe51380 | 757 | UNLOCK_SV_MUTEX; |
463ee0b2 LW |
758 | } |
759 | ||
645c22ef DM |
760 | /* allocate another arena's worth of struct xpv */ |
761 | ||
cbe51380 | 762 | STATIC void |
cea2e8a9 | 763 | S_more_xpv(pTHX) |
463ee0b2 | 764 | { |
463ee0b2 LW |
765 | register XPV* xpv; |
766 | register XPV* xpvend; | |
612f20c3 GS |
767 | New(713, xpv, 1008/sizeof(XPV), XPV); |
768 | xpv->xpv_pv = (char*)PL_xpv_arenaroot; | |
769 | PL_xpv_arenaroot = xpv; | |
770 | ||
463ee0b2 | 771 | xpvend = &xpv[1008 / sizeof(XPV) - 1]; |
612f20c3 | 772 | PL_xpv_root = ++xpv; |
463ee0b2 LW |
773 | while (xpv < xpvend) { |
774 | xpv->xpv_pv = (char*)(xpv + 1); | |
775 | xpv++; | |
776 | } | |
777 | xpv->xpv_pv = 0; | |
463ee0b2 LW |
778 | } |
779 | ||
645c22ef DM |
780 | /* grab a new struct xpviv from the free list, allocating more if necessary */ |
781 | ||
932e9ff9 VB |
782 | STATIC XPVIV* |
783 | S_new_xpviv(pTHX) | |
784 | { | |
785 | XPVIV* xpviv; | |
786 | LOCK_SV_MUTEX; | |
787 | if (!PL_xpviv_root) | |
788 | more_xpviv(); | |
789 | xpviv = PL_xpviv_root; | |
790 | PL_xpviv_root = (XPVIV*)xpviv->xpv_pv; | |
791 | UNLOCK_SV_MUTEX; | |
792 | return xpviv; | |
793 | } | |
794 | ||
645c22ef DM |
795 | /* return a struct xpviv to the free list */ |
796 | ||
932e9ff9 VB |
797 | STATIC void |
798 | S_del_xpviv(pTHX_ XPVIV *p) | |
799 | { | |
800 | LOCK_SV_MUTEX; | |
801 | p->xpv_pv = (char*)PL_xpviv_root; | |
802 | PL_xpviv_root = p; | |
803 | UNLOCK_SV_MUTEX; | |
804 | } | |
805 | ||
645c22ef DM |
806 | /* allocate another arena's worth of struct xpviv */ |
807 | ||
932e9ff9 VB |
808 | STATIC void |
809 | S_more_xpviv(pTHX) | |
810 | { | |
811 | register XPVIV* xpviv; | |
812 | register XPVIV* xpvivend; | |
612f20c3 GS |
813 | New(714, xpviv, 1008/sizeof(XPVIV), XPVIV); |
814 | xpviv->xpv_pv = (char*)PL_xpviv_arenaroot; | |
815 | PL_xpviv_arenaroot = xpviv; | |
816 | ||
932e9ff9 | 817 | xpvivend = &xpviv[1008 / sizeof(XPVIV) - 1]; |
612f20c3 | 818 | PL_xpviv_root = ++xpviv; |
932e9ff9 VB |
819 | while (xpviv < xpvivend) { |
820 | xpviv->xpv_pv = (char*)(xpviv + 1); | |
821 | xpviv++; | |
822 | } | |
823 | xpviv->xpv_pv = 0; | |
824 | } | |
825 | ||
645c22ef DM |
826 | /* grab a new struct xpvnv from the free list, allocating more if necessary */ |
827 | ||
932e9ff9 VB |
828 | STATIC XPVNV* |
829 | S_new_xpvnv(pTHX) | |
830 | { | |
831 | XPVNV* xpvnv; | |
832 | LOCK_SV_MUTEX; | |
833 | if (!PL_xpvnv_root) | |
834 | more_xpvnv(); | |
835 | xpvnv = PL_xpvnv_root; | |
836 | PL_xpvnv_root = (XPVNV*)xpvnv->xpv_pv; | |
837 | UNLOCK_SV_MUTEX; | |
838 | return xpvnv; | |
839 | } | |
840 | ||
645c22ef DM |
841 | /* return a struct xpvnv to the free list */ |
842 | ||
932e9ff9 VB |
843 | STATIC void |
844 | S_del_xpvnv(pTHX_ XPVNV *p) | |
845 | { | |
846 | LOCK_SV_MUTEX; | |
847 | p->xpv_pv = (char*)PL_xpvnv_root; | |
848 | PL_xpvnv_root = p; | |
849 | UNLOCK_SV_MUTEX; | |
850 | } | |
851 | ||
645c22ef DM |
852 | /* allocate another arena's worth of struct xpvnv */ |
853 | ||
932e9ff9 VB |
854 | STATIC void |
855 | S_more_xpvnv(pTHX) | |
856 | { | |
857 | register XPVNV* xpvnv; | |
858 | register XPVNV* xpvnvend; | |
612f20c3 GS |
859 | New(715, xpvnv, 1008/sizeof(XPVNV), XPVNV); |
860 | xpvnv->xpv_pv = (char*)PL_xpvnv_arenaroot; | |
861 | PL_xpvnv_arenaroot = xpvnv; | |
862 | ||
932e9ff9 | 863 | xpvnvend = &xpvnv[1008 / sizeof(XPVNV) - 1]; |
612f20c3 | 864 | PL_xpvnv_root = ++xpvnv; |
932e9ff9 VB |
865 | while (xpvnv < xpvnvend) { |
866 | xpvnv->xpv_pv = (char*)(xpvnv + 1); | |
867 | xpvnv++; | |
868 | } | |
869 | xpvnv->xpv_pv = 0; | |
870 | } | |
871 | ||
645c22ef DM |
872 | /* grab a new struct xpvcv from the free list, allocating more if necessary */ |
873 | ||
932e9ff9 VB |
874 | STATIC XPVCV* |
875 | S_new_xpvcv(pTHX) | |
876 | { | |
877 | XPVCV* xpvcv; | |
878 | LOCK_SV_MUTEX; | |
879 | if (!PL_xpvcv_root) | |
880 | more_xpvcv(); | |
881 | xpvcv = PL_xpvcv_root; | |
882 | PL_xpvcv_root = (XPVCV*)xpvcv->xpv_pv; | |
883 | UNLOCK_SV_MUTEX; | |
884 | return xpvcv; | |
885 | } | |
886 | ||
645c22ef DM |
887 | /* return a struct xpvcv to the free list */ |
888 | ||
932e9ff9 VB |
889 | STATIC void |
890 | S_del_xpvcv(pTHX_ XPVCV *p) | |
891 | { | |
892 | LOCK_SV_MUTEX; | |
893 | p->xpv_pv = (char*)PL_xpvcv_root; | |
894 | PL_xpvcv_root = p; | |
895 | UNLOCK_SV_MUTEX; | |
896 | } | |
897 | ||
645c22ef DM |
898 | /* allocate another arena's worth of struct xpvcv */ |
899 | ||
932e9ff9 VB |
900 | STATIC void |
901 | S_more_xpvcv(pTHX) | |
902 | { | |
903 | register XPVCV* xpvcv; | |
904 | register XPVCV* xpvcvend; | |
612f20c3 GS |
905 | New(716, xpvcv, 1008/sizeof(XPVCV), XPVCV); |
906 | xpvcv->xpv_pv = (char*)PL_xpvcv_arenaroot; | |
907 | PL_xpvcv_arenaroot = xpvcv; | |
908 | ||
932e9ff9 | 909 | xpvcvend = &xpvcv[1008 / sizeof(XPVCV) - 1]; |
612f20c3 | 910 | PL_xpvcv_root = ++xpvcv; |
932e9ff9 VB |
911 | while (xpvcv < xpvcvend) { |
912 | xpvcv->xpv_pv = (char*)(xpvcv + 1); | |
913 | xpvcv++; | |
914 | } | |
915 | xpvcv->xpv_pv = 0; | |
916 | } | |
917 | ||
645c22ef DM |
918 | /* grab a new struct xpvav from the free list, allocating more if necessary */ |
919 | ||
932e9ff9 VB |
920 | STATIC XPVAV* |
921 | S_new_xpvav(pTHX) | |
922 | { | |
923 | XPVAV* xpvav; | |
924 | LOCK_SV_MUTEX; | |
925 | if (!PL_xpvav_root) | |
926 | more_xpvav(); | |
927 | xpvav = PL_xpvav_root; | |
928 | PL_xpvav_root = (XPVAV*)xpvav->xav_array; | |
929 | UNLOCK_SV_MUTEX; | |
930 | return xpvav; | |
931 | } | |
932 | ||
645c22ef DM |
933 | /* return a struct xpvav to the free list */ |
934 | ||
932e9ff9 VB |
935 | STATIC void |
936 | S_del_xpvav(pTHX_ XPVAV *p) | |
937 | { | |
938 | LOCK_SV_MUTEX; | |
939 | p->xav_array = (char*)PL_xpvav_root; | |
940 | PL_xpvav_root = p; | |
941 | UNLOCK_SV_MUTEX; | |
942 | } | |
943 | ||
645c22ef DM |
944 | /* allocate another arena's worth of struct xpvav */ |
945 | ||
932e9ff9 VB |
946 | STATIC void |
947 | S_more_xpvav(pTHX) | |
948 | { | |
949 | register XPVAV* xpvav; | |
950 | register XPVAV* xpvavend; | |
612f20c3 GS |
951 | New(717, xpvav, 1008/sizeof(XPVAV), XPVAV); |
952 | xpvav->xav_array = (char*)PL_xpvav_arenaroot; | |
953 | PL_xpvav_arenaroot = xpvav; | |
954 | ||
932e9ff9 | 955 | xpvavend = &xpvav[1008 / sizeof(XPVAV) - 1]; |
612f20c3 | 956 | PL_xpvav_root = ++xpvav; |
932e9ff9 VB |
957 | while (xpvav < xpvavend) { |
958 | xpvav->xav_array = (char*)(xpvav + 1); | |
959 | xpvav++; | |
960 | } | |
961 | xpvav->xav_array = 0; | |
962 | } | |
963 | ||
645c22ef DM |
964 | /* grab a new struct xpvhv from the free list, allocating more if necessary */ |
965 | ||
932e9ff9 VB |
966 | STATIC XPVHV* |
967 | S_new_xpvhv(pTHX) | |
968 | { | |
969 | XPVHV* xpvhv; | |
970 | LOCK_SV_MUTEX; | |
971 | if (!PL_xpvhv_root) | |
972 | more_xpvhv(); | |
973 | xpvhv = PL_xpvhv_root; | |
974 | PL_xpvhv_root = (XPVHV*)xpvhv->xhv_array; | |
975 | UNLOCK_SV_MUTEX; | |
976 | return xpvhv; | |
977 | } | |
978 | ||
645c22ef DM |
979 | /* return a struct xpvhv to the free list */ |
980 | ||
932e9ff9 VB |
981 | STATIC void |
982 | S_del_xpvhv(pTHX_ XPVHV *p) | |
983 | { | |
984 | LOCK_SV_MUTEX; | |
985 | p->xhv_array = (char*)PL_xpvhv_root; | |
986 | PL_xpvhv_root = p; | |
987 | UNLOCK_SV_MUTEX; | |
988 | } | |
989 | ||
645c22ef DM |
990 | /* allocate another arena's worth of struct xpvhv */ |
991 | ||
932e9ff9 VB |
992 | STATIC void |
993 | S_more_xpvhv(pTHX) | |
994 | { | |
995 | register XPVHV* xpvhv; | |
996 | register XPVHV* xpvhvend; | |
612f20c3 GS |
997 | New(718, xpvhv, 1008/sizeof(XPVHV), XPVHV); |
998 | xpvhv->xhv_array = (char*)PL_xpvhv_arenaroot; | |
999 | PL_xpvhv_arenaroot = xpvhv; | |
1000 | ||
932e9ff9 | 1001 | xpvhvend = &xpvhv[1008 / sizeof(XPVHV) - 1]; |
612f20c3 | 1002 | PL_xpvhv_root = ++xpvhv; |
932e9ff9 VB |
1003 | while (xpvhv < xpvhvend) { |
1004 | xpvhv->xhv_array = (char*)(xpvhv + 1); | |
1005 | xpvhv++; | |
1006 | } | |
1007 | xpvhv->xhv_array = 0; | |
1008 | } | |
1009 | ||
645c22ef DM |
1010 | /* grab a new struct xpvmg from the free list, allocating more if necessary */ |
1011 | ||
932e9ff9 VB |
1012 | STATIC XPVMG* |
1013 | S_new_xpvmg(pTHX) | |
1014 | { | |
1015 | XPVMG* xpvmg; | |
1016 | LOCK_SV_MUTEX; | |
1017 | if (!PL_xpvmg_root) | |
1018 | more_xpvmg(); | |
1019 | xpvmg = PL_xpvmg_root; | |
1020 | PL_xpvmg_root = (XPVMG*)xpvmg->xpv_pv; | |
1021 | UNLOCK_SV_MUTEX; | |
1022 | return xpvmg; | |
1023 | } | |
1024 | ||
645c22ef DM |
1025 | /* return a struct xpvmg to the free list */ |
1026 | ||
932e9ff9 VB |
1027 | STATIC void |
1028 | S_del_xpvmg(pTHX_ XPVMG *p) | |
1029 | { | |
1030 | LOCK_SV_MUTEX; | |
1031 | p->xpv_pv = (char*)PL_xpvmg_root; | |
1032 | PL_xpvmg_root = p; | |
1033 | UNLOCK_SV_MUTEX; | |
1034 | } | |
1035 | ||
645c22ef DM |
1036 | /* allocate another arena's worth of struct xpvmg */ |
1037 | ||
932e9ff9 VB |
1038 | STATIC void |
1039 | S_more_xpvmg(pTHX) | |
1040 | { | |
1041 | register XPVMG* xpvmg; | |
1042 | register XPVMG* xpvmgend; | |
612f20c3 GS |
1043 | New(719, xpvmg, 1008/sizeof(XPVMG), XPVMG); |
1044 | xpvmg->xpv_pv = (char*)PL_xpvmg_arenaroot; | |
1045 | PL_xpvmg_arenaroot = xpvmg; | |
1046 | ||
932e9ff9 | 1047 | xpvmgend = &xpvmg[1008 / sizeof(XPVMG) - 1]; |
612f20c3 | 1048 | PL_xpvmg_root = ++xpvmg; |
932e9ff9 VB |
1049 | while (xpvmg < xpvmgend) { |
1050 | xpvmg->xpv_pv = (char*)(xpvmg + 1); | |
1051 | xpvmg++; | |
1052 | } | |
1053 | xpvmg->xpv_pv = 0; | |
1054 | } | |
1055 | ||
645c22ef DM |
1056 | /* grab a new struct xpvlv from the free list, allocating more if necessary */ |
1057 | ||
932e9ff9 VB |
1058 | STATIC XPVLV* |
1059 | S_new_xpvlv(pTHX) | |
1060 | { | |
1061 | XPVLV* xpvlv; | |
1062 | LOCK_SV_MUTEX; | |
1063 | if (!PL_xpvlv_root) | |
1064 | more_xpvlv(); | |
1065 | xpvlv = PL_xpvlv_root; | |
1066 | PL_xpvlv_root = (XPVLV*)xpvlv->xpv_pv; | |
1067 | UNLOCK_SV_MUTEX; | |
1068 | return xpvlv; | |
1069 | } | |
1070 | ||
645c22ef DM |
1071 | /* return a struct xpvlv to the free list */ |
1072 | ||
932e9ff9 VB |
1073 | STATIC void |
1074 | S_del_xpvlv(pTHX_ XPVLV *p) | |
1075 | { | |
1076 | LOCK_SV_MUTEX; | |
1077 | p->xpv_pv = (char*)PL_xpvlv_root; | |
1078 | PL_xpvlv_root = p; | |
1079 | UNLOCK_SV_MUTEX; | |
1080 | } | |
1081 | ||
645c22ef DM |
1082 | /* allocate another arena's worth of struct xpvlv */ |
1083 | ||
932e9ff9 VB |
1084 | STATIC void |
1085 | S_more_xpvlv(pTHX) | |
1086 | { | |
1087 | register XPVLV* xpvlv; | |
1088 | register XPVLV* xpvlvend; | |
612f20c3 GS |
1089 | New(720, xpvlv, 1008/sizeof(XPVLV), XPVLV); |
1090 | xpvlv->xpv_pv = (char*)PL_xpvlv_arenaroot; | |
1091 | PL_xpvlv_arenaroot = xpvlv; | |
1092 | ||
932e9ff9 | 1093 | xpvlvend = &xpvlv[1008 / sizeof(XPVLV) - 1]; |
612f20c3 | 1094 | PL_xpvlv_root = ++xpvlv; |
932e9ff9 VB |
1095 | while (xpvlv < xpvlvend) { |
1096 | xpvlv->xpv_pv = (char*)(xpvlv + 1); | |
1097 | xpvlv++; | |
1098 | } | |
1099 | xpvlv->xpv_pv = 0; | |
1100 | } | |
1101 | ||
645c22ef DM |
1102 | /* grab a new struct xpvbm from the free list, allocating more if necessary */ |
1103 | ||
932e9ff9 VB |
1104 | STATIC XPVBM* |
1105 | S_new_xpvbm(pTHX) | |
1106 | { | |
1107 | XPVBM* xpvbm; | |
1108 | LOCK_SV_MUTEX; | |
1109 | if (!PL_xpvbm_root) | |
1110 | more_xpvbm(); | |
1111 | xpvbm = PL_xpvbm_root; | |
1112 | PL_xpvbm_root = (XPVBM*)xpvbm->xpv_pv; | |
1113 | UNLOCK_SV_MUTEX; | |
1114 | return xpvbm; | |
1115 | } | |
1116 | ||
645c22ef DM |
1117 | /* return a struct xpvbm to the free list */ |
1118 | ||
932e9ff9 VB |
1119 | STATIC void |
1120 | S_del_xpvbm(pTHX_ XPVBM *p) | |
1121 | { | |
1122 | LOCK_SV_MUTEX; | |
1123 | p->xpv_pv = (char*)PL_xpvbm_root; | |
1124 | PL_xpvbm_root = p; | |
1125 | UNLOCK_SV_MUTEX; | |
1126 | } | |
1127 | ||
645c22ef DM |
1128 | /* allocate another arena's worth of struct xpvbm */ |
1129 | ||
932e9ff9 VB |
1130 | STATIC void |
1131 | S_more_xpvbm(pTHX) | |
1132 | { | |
1133 | register XPVBM* xpvbm; | |
1134 | register XPVBM* xpvbmend; | |
612f20c3 GS |
1135 | New(721, xpvbm, 1008/sizeof(XPVBM), XPVBM); |
1136 | xpvbm->xpv_pv = (char*)PL_xpvbm_arenaroot; | |
1137 | PL_xpvbm_arenaroot = xpvbm; | |
1138 | ||
932e9ff9 | 1139 | xpvbmend = &xpvbm[1008 / sizeof(XPVBM) - 1]; |
612f20c3 | 1140 | PL_xpvbm_root = ++xpvbm; |
932e9ff9 VB |
1141 | while (xpvbm < xpvbmend) { |
1142 | xpvbm->xpv_pv = (char*)(xpvbm + 1); | |
1143 | xpvbm++; | |
1144 | } | |
1145 | xpvbm->xpv_pv = 0; | |
1146 | } | |
1147 | ||
7bab3ede MB |
1148 | #define my_safemalloc(s) (void*)safemalloc(s) |
1149 | #define my_safefree(p) safefree((char*)p) | |
463ee0b2 | 1150 | |
d33b2eba | 1151 | #ifdef PURIFY |
463ee0b2 | 1152 | |
d33b2eba GS |
1153 | #define new_XIV() my_safemalloc(sizeof(XPVIV)) |
1154 | #define del_XIV(p) my_safefree(p) | |
ed6116ce | 1155 | |
d33b2eba GS |
1156 | #define new_XNV() my_safemalloc(sizeof(XPVNV)) |
1157 | #define del_XNV(p) my_safefree(p) | |
463ee0b2 | 1158 | |
d33b2eba GS |
1159 | #define new_XRV() my_safemalloc(sizeof(XRV)) |
1160 | #define del_XRV(p) my_safefree(p) | |
8c52afec | 1161 | |
d33b2eba GS |
1162 | #define new_XPV() my_safemalloc(sizeof(XPV)) |
1163 | #define del_XPV(p) my_safefree(p) | |
9b94d1dd | 1164 | |
d33b2eba GS |
1165 | #define new_XPVIV() my_safemalloc(sizeof(XPVIV)) |
1166 | #define del_XPVIV(p) my_safefree(p) | |
932e9ff9 | 1167 | |
d33b2eba GS |
1168 | #define new_XPVNV() my_safemalloc(sizeof(XPVNV)) |
1169 | #define del_XPVNV(p) my_safefree(p) | |
932e9ff9 | 1170 | |
d33b2eba GS |
1171 | #define new_XPVCV() my_safemalloc(sizeof(XPVCV)) |
1172 | #define del_XPVCV(p) my_safefree(p) | |
932e9ff9 | 1173 | |
d33b2eba GS |
1174 | #define new_XPVAV() my_safemalloc(sizeof(XPVAV)) |
1175 | #define del_XPVAV(p) my_safefree(p) | |
1176 | ||
1177 | #define new_XPVHV() my_safemalloc(sizeof(XPVHV)) | |
1178 | #define del_XPVHV(p) my_safefree(p) | |
1c846c1f | 1179 | |
d33b2eba GS |
1180 | #define new_XPVMG() my_safemalloc(sizeof(XPVMG)) |
1181 | #define del_XPVMG(p) my_safefree(p) | |
1182 | ||
1183 | #define new_XPVLV() my_safemalloc(sizeof(XPVLV)) | |
1184 | #define del_XPVLV(p) my_safefree(p) | |
1185 | ||
1186 | #define new_XPVBM() my_safemalloc(sizeof(XPVBM)) | |
1187 | #define del_XPVBM(p) my_safefree(p) | |
1188 | ||
1189 | #else /* !PURIFY */ | |
1190 | ||
1191 | #define new_XIV() (void*)new_xiv() | |
1192 | #define del_XIV(p) del_xiv((XPVIV*) p) | |
1193 | ||
1194 | #define new_XNV() (void*)new_xnv() | |
1195 | #define del_XNV(p) del_xnv((XPVNV*) p) | |
9b94d1dd | 1196 | |
d33b2eba GS |
1197 | #define new_XRV() (void*)new_xrv() |
1198 | #define del_XRV(p) del_xrv((XRV*) p) | |
9b94d1dd | 1199 | |
d33b2eba GS |
1200 | #define new_XPV() (void*)new_xpv() |
1201 | #define del_XPV(p) del_xpv((XPV *)p) | |
1202 | ||
1203 | #define new_XPVIV() (void*)new_xpviv() | |
1204 | #define del_XPVIV(p) del_xpviv((XPVIV *)p) | |
1205 | ||
1206 | #define new_XPVNV() (void*)new_xpvnv() | |
1207 | #define del_XPVNV(p) del_xpvnv((XPVNV *)p) | |
1208 | ||
1209 | #define new_XPVCV() (void*)new_xpvcv() | |
1210 | #define del_XPVCV(p) del_xpvcv((XPVCV *)p) | |
1211 | ||
1212 | #define new_XPVAV() (void*)new_xpvav() | |
1213 | #define del_XPVAV(p) del_xpvav((XPVAV *)p) | |
1214 | ||
1215 | #define new_XPVHV() (void*)new_xpvhv() | |
1216 | #define del_XPVHV(p) del_xpvhv((XPVHV *)p) | |
1c846c1f | 1217 | |
d33b2eba GS |
1218 | #define new_XPVMG() (void*)new_xpvmg() |
1219 | #define del_XPVMG(p) del_xpvmg((XPVMG *)p) | |
1220 | ||
1221 | #define new_XPVLV() (void*)new_xpvlv() | |
1222 | #define del_XPVLV(p) del_xpvlv((XPVLV *)p) | |
1223 | ||
1224 | #define new_XPVBM() (void*)new_xpvbm() | |
1225 | #define del_XPVBM(p) del_xpvbm((XPVBM *)p) | |
1226 | ||
1227 | #endif /* PURIFY */ | |
9b94d1dd | 1228 | |
d33b2eba GS |
1229 | #define new_XPVGV() my_safemalloc(sizeof(XPVGV)) |
1230 | #define del_XPVGV(p) my_safefree(p) | |
1c846c1f | 1231 | |
d33b2eba GS |
1232 | #define new_XPVFM() my_safemalloc(sizeof(XPVFM)) |
1233 | #define del_XPVFM(p) my_safefree(p) | |
1c846c1f | 1234 | |
d33b2eba GS |
1235 | #define new_XPVIO() my_safemalloc(sizeof(XPVIO)) |
1236 | #define del_XPVIO(p) my_safefree(p) | |
8990e307 | 1237 | |
954c1994 GS |
1238 | /* |
1239 | =for apidoc sv_upgrade | |
1240 | ||
ff276b08 | 1241 | Upgrade an SV to a more complex form. Generally adds a new body type to the |
645c22ef | 1242 | SV, then copies across as much information as possible from the old body. |
ff276b08 | 1243 | You generally want to use the C<SvUPGRADE> macro wrapper. See also C<svtype>. |
954c1994 GS |
1244 | |
1245 | =cut | |
1246 | */ | |
1247 | ||
79072805 | 1248 | bool |
864dbfa3 | 1249 | Perl_sv_upgrade(pTHX_ register SV *sv, U32 mt) |
79072805 | 1250 | { |
c04a4dfe JH |
1251 | char* pv = NULL; |
1252 | U32 cur = 0; | |
1253 | U32 len = 0; | |
1254 | IV iv = 0; | |
1255 | NV nv = 0.0; | |
1256 | MAGIC* magic = NULL; | |
1257 | HV* stash = Nullhv; | |
79072805 | 1258 | |
765f542d NC |
1259 | if (mt != SVt_PV && SvIsCOW(sv)) { |
1260 | sv_force_normal_flags(sv, 0); | |
f130fd45 NIS |
1261 | } |
1262 | ||
79072805 LW |
1263 | if (SvTYPE(sv) == mt) |
1264 | return TRUE; | |
1265 | ||
a5f75d66 AD |
1266 | if (mt < SVt_PVIV) |
1267 | (void)SvOOK_off(sv); | |
1268 | ||
79072805 LW |
1269 | switch (SvTYPE(sv)) { |
1270 | case SVt_NULL: | |
1271 | pv = 0; | |
1272 | cur = 0; | |
1273 | len = 0; | |
1274 | iv = 0; | |
1275 | nv = 0.0; | |
1276 | magic = 0; | |
1277 | stash = 0; | |
1278 | break; | |
79072805 LW |
1279 | case SVt_IV: |
1280 | pv = 0; | |
1281 | cur = 0; | |
1282 | len = 0; | |
463ee0b2 | 1283 | iv = SvIVX(sv); |
65202027 | 1284 | nv = (NV)SvIVX(sv); |
79072805 LW |
1285 | del_XIV(SvANY(sv)); |
1286 | magic = 0; | |
1287 | stash = 0; | |
ed6116ce | 1288 | if (mt == SVt_NV) |
463ee0b2 | 1289 | mt = SVt_PVNV; |
ed6116ce LW |
1290 | else if (mt < SVt_PVIV) |
1291 | mt = SVt_PVIV; | |
79072805 LW |
1292 | break; |
1293 | case SVt_NV: | |
1294 | pv = 0; | |
1295 | cur = 0; | |
1296 | len = 0; | |
463ee0b2 | 1297 | nv = SvNVX(sv); |
1bd302c3 | 1298 | iv = I_V(nv); |
79072805 LW |
1299 | magic = 0; |
1300 | stash = 0; | |
1301 | del_XNV(SvANY(sv)); | |
1302 | SvANY(sv) = 0; | |
ed6116ce | 1303 | if (mt < SVt_PVNV) |
79072805 LW |
1304 | mt = SVt_PVNV; |
1305 | break; | |
ed6116ce LW |
1306 | case SVt_RV: |
1307 | pv = (char*)SvRV(sv); | |
1308 | cur = 0; | |
1309 | len = 0; | |
56431972 RB |
1310 | iv = PTR2IV(pv); |
1311 | nv = PTR2NV(pv); | |
ed6116ce LW |
1312 | del_XRV(SvANY(sv)); |
1313 | magic = 0; | |
1314 | stash = 0; | |
1315 | break; | |
79072805 | 1316 | case SVt_PV: |
463ee0b2 | 1317 | pv = SvPVX(sv); |
79072805 LW |
1318 | cur = SvCUR(sv); |
1319 | len = SvLEN(sv); | |
1320 | iv = 0; | |
1321 | nv = 0.0; | |
1322 | magic = 0; | |
1323 | stash = 0; | |
1324 | del_XPV(SvANY(sv)); | |
748a9306 LW |
1325 | if (mt <= SVt_IV) |
1326 | mt = SVt_PVIV; | |
1327 | else if (mt == SVt_NV) | |
1328 | mt = SVt_PVNV; | |
79072805 LW |
1329 | break; |
1330 | case SVt_PVIV: | |
463ee0b2 | 1331 | pv = SvPVX(sv); |
79072805 LW |
1332 | cur = SvCUR(sv); |
1333 | len = SvLEN(sv); | |
463ee0b2 | 1334 | iv = SvIVX(sv); |
79072805 LW |
1335 | nv = 0.0; |
1336 | magic = 0; | |
1337 | stash = 0; | |
1338 | del_XPVIV(SvANY(sv)); | |
1339 | break; | |
1340 | case SVt_PVNV: | |
463ee0b2 | 1341 | pv = SvPVX(sv); |
79072805 LW |
1342 | cur = SvCUR(sv); |
1343 | len = SvLEN(sv); | |
463ee0b2 LW |
1344 | iv = SvIVX(sv); |
1345 | nv = SvNVX(sv); | |
79072805 LW |
1346 | magic = 0; |
1347 | stash = 0; | |
1348 | del_XPVNV(SvANY(sv)); | |
1349 | break; | |
1350 | case SVt_PVMG: | |
463ee0b2 | 1351 | pv = SvPVX(sv); |
79072805 LW |
1352 | cur = SvCUR(sv); |
1353 | len = SvLEN(sv); | |
463ee0b2 LW |
1354 | iv = SvIVX(sv); |
1355 | nv = SvNVX(sv); | |
79072805 LW |
1356 | magic = SvMAGIC(sv); |
1357 | stash = SvSTASH(sv); | |
1358 | del_XPVMG(SvANY(sv)); | |
1359 | break; | |
1360 | default: | |
cea2e8a9 | 1361 | Perl_croak(aTHX_ "Can't upgrade that kind of scalar"); |
79072805 LW |
1362 | } |
1363 | ||
1364 | switch (mt) { | |
1365 | case SVt_NULL: | |
cea2e8a9 | 1366 | Perl_croak(aTHX_ "Can't upgrade to undef"); |
79072805 LW |
1367 | case SVt_IV: |
1368 | SvANY(sv) = new_XIV(); | |
463ee0b2 | 1369 | SvIVX(sv) = iv; |
79072805 LW |
1370 | break; |
1371 | case SVt_NV: | |
1372 | SvANY(sv) = new_XNV(); | |
463ee0b2 | 1373 | SvNVX(sv) = nv; |
79072805 | 1374 | break; |
ed6116ce LW |
1375 | case SVt_RV: |
1376 | SvANY(sv) = new_XRV(); | |
1377 | SvRV(sv) = (SV*)pv; | |
ed6116ce | 1378 | break; |
79072805 LW |
1379 | case SVt_PV: |
1380 | SvANY(sv) = new_XPV(); | |
463ee0b2 | 1381 | SvPVX(sv) = pv; |
79072805 LW |
1382 | SvCUR(sv) = cur; |
1383 | SvLEN(sv) = len; | |
1384 | break; | |
1385 | case SVt_PVIV: | |
1386 | SvANY(sv) = new_XPVIV(); | |
463ee0b2 | 1387 | SvPVX(sv) = pv; |
79072805 LW |
1388 | SvCUR(sv) = cur; |
1389 | SvLEN(sv) = len; | |
463ee0b2 | 1390 | SvIVX(sv) = iv; |
79072805 | 1391 | if (SvNIOK(sv)) |
a0d0e21e | 1392 | (void)SvIOK_on(sv); |
79072805 LW |
1393 | SvNOK_off(sv); |
1394 | break; | |
1395 | case SVt_PVNV: | |
1396 | SvANY(sv) = new_XPVNV(); | |
463ee0b2 | 1397 | SvPVX(sv) = pv; |
79072805 LW |
1398 | SvCUR(sv) = cur; |
1399 | SvLEN(sv) = len; | |
463ee0b2 LW |
1400 | SvIVX(sv) = iv; |
1401 | SvNVX(sv) = nv; | |
79072805 LW |
1402 | break; |
1403 | case SVt_PVMG: | |
1404 | SvANY(sv) = new_XPVMG(); | |
463ee0b2 | 1405 | SvPVX(sv) = pv; |
79072805 LW |
1406 | SvCUR(sv) = cur; |
1407 | SvLEN(sv) = len; | |
463ee0b2 LW |
1408 | SvIVX(sv) = iv; |
1409 | SvNVX(sv) = nv; | |
79072805 LW |
1410 | SvMAGIC(sv) = magic; |
1411 | SvSTASH(sv) = stash; | |
1412 | break; | |
1413 | case SVt_PVLV: | |
1414 | SvANY(sv) = new_XPVLV(); | |
463ee0b2 | 1415 | SvPVX(sv) = pv; |
79072805 LW |
1416 | SvCUR(sv) = cur; |
1417 | SvLEN(sv) = len; | |
463ee0b2 LW |
1418 | SvIVX(sv) = iv; |
1419 | SvNVX(sv) = nv; | |
79072805 LW |
1420 | SvMAGIC(sv) = magic; |
1421 | SvSTASH(sv) = stash; | |
1422 | LvTARGOFF(sv) = 0; | |
1423 | LvTARGLEN(sv) = 0; | |
1424 | LvTARG(sv) = 0; | |
1425 | LvTYPE(sv) = 0; | |
1426 | break; | |
1427 | case SVt_PVAV: | |
1428 | SvANY(sv) = new_XPVAV(); | |
463ee0b2 LW |
1429 | if (pv) |
1430 | Safefree(pv); | |
2304df62 | 1431 | SvPVX(sv) = 0; |
d1bf51dd | 1432 | AvMAX(sv) = -1; |
93965878 | 1433 | AvFILLp(sv) = -1; |
463ee0b2 LW |
1434 | SvIVX(sv) = 0; |
1435 | SvNVX(sv) = 0.0; | |
1436 | SvMAGIC(sv) = magic; | |
1437 | SvSTASH(sv) = stash; | |
1438 | AvALLOC(sv) = 0; | |
79072805 LW |
1439 | AvARYLEN(sv) = 0; |
1440 | AvFLAGS(sv) = 0; | |
1441 | break; | |
1442 | case SVt_PVHV: | |
1443 | SvANY(sv) = new_XPVHV(); | |
463ee0b2 LW |
1444 | if (pv) |
1445 | Safefree(pv); | |
1446 | SvPVX(sv) = 0; | |
1447 | HvFILL(sv) = 0; | |
1448 | HvMAX(sv) = 0; | |
8aacddc1 NIS |
1449 | HvTOTALKEYS(sv) = 0; |
1450 | HvPLACEHOLDERS(sv) = 0; | |
79072805 LW |
1451 | SvMAGIC(sv) = magic; |
1452 | SvSTASH(sv) = stash; | |
79072805 LW |
1453 | HvRITER(sv) = 0; |
1454 | HvEITER(sv) = 0; | |
1455 | HvPMROOT(sv) = 0; | |
1456 | HvNAME(sv) = 0; | |
79072805 LW |
1457 | break; |
1458 | case SVt_PVCV: | |
1459 | SvANY(sv) = new_XPVCV(); | |
748a9306 | 1460 | Zero(SvANY(sv), 1, XPVCV); |
463ee0b2 | 1461 | SvPVX(sv) = pv; |
79072805 LW |
1462 | SvCUR(sv) = cur; |
1463 | SvLEN(sv) = len; | |
463ee0b2 LW |
1464 | SvIVX(sv) = iv; |
1465 | SvNVX(sv) = nv; | |
79072805 LW |
1466 | SvMAGIC(sv) = magic; |
1467 | SvSTASH(sv) = stash; | |
79072805 LW |
1468 | break; |
1469 | case SVt_PVGV: | |
1470 | SvANY(sv) = new_XPVGV(); | |
463ee0b2 | 1471 | SvPVX(sv) = pv; |
79072805 LW |
1472 | SvCUR(sv) = cur; |
1473 | SvLEN(sv) = len; | |
463ee0b2 LW |
1474 | SvIVX(sv) = iv; |
1475 | SvNVX(sv) = nv; | |
79072805 LW |
1476 | SvMAGIC(sv) = magic; |
1477 | SvSTASH(sv) = stash; | |
93a17b20 | 1478 | GvGP(sv) = 0; |
79072805 LW |
1479 | GvNAME(sv) = 0; |
1480 | GvNAMELEN(sv) = 0; | |
1481 | GvSTASH(sv) = 0; | |
a5f75d66 | 1482 | GvFLAGS(sv) = 0; |
79072805 LW |
1483 | break; |
1484 | case SVt_PVBM: | |
1485 | SvANY(sv) = new_XPVBM(); | |
463ee0b2 | 1486 | SvPVX(sv) = pv; |
79072805 LW |
1487 | SvCUR(sv) = cur; |
1488 | SvLEN(sv) = len; | |
463ee0b2 LW |
1489 | SvIVX(sv) = iv; |
1490 | SvNVX(sv) = nv; | |
79072805 LW |
1491 | SvMAGIC(sv) = magic; |
1492 | SvSTASH(sv) = stash; | |
1493 | BmRARE(sv) = 0; | |
1494 | BmUSEFUL(sv) = 0; | |
1495 | BmPREVIOUS(sv) = 0; | |
1496 | break; | |
1497 | case SVt_PVFM: | |
1498 | SvANY(sv) = new_XPVFM(); | |
748a9306 | 1499 | Zero(SvANY(sv), 1, XPVFM); |
463ee0b2 | 1500 | SvPVX(sv) = pv; |
79072805 LW |
1501 | SvCUR(sv) = cur; |
1502 | SvLEN(sv) = len; | |
463ee0b2 LW |
1503 | SvIVX(sv) = iv; |
1504 | SvNVX(sv) = nv; | |
79072805 LW |
1505 | SvMAGIC(sv) = magic; |
1506 | SvSTASH(sv) = stash; | |
79072805 | 1507 | break; |
8990e307 LW |
1508 | case SVt_PVIO: |
1509 | SvANY(sv) = new_XPVIO(); | |
748a9306 | 1510 | Zero(SvANY(sv), 1, XPVIO); |
8990e307 LW |
1511 | SvPVX(sv) = pv; |
1512 | SvCUR(sv) = cur; | |
1513 | SvLEN(sv) = len; | |
1514 | SvIVX(sv) = iv; | |
1515 | SvNVX(sv) = nv; | |
1516 | SvMAGIC(sv) = magic; | |
1517 | SvSTASH(sv) = stash; | |
85e6fe83 | 1518 | IoPAGE_LEN(sv) = 60; |
8990e307 LW |
1519 | break; |
1520 | } | |
1521 | SvFLAGS(sv) &= ~SVTYPEMASK; | |
1522 | SvFLAGS(sv) |= mt; | |
79072805 LW |
1523 | return TRUE; |
1524 | } | |
1525 | ||
645c22ef DM |
1526 | /* |
1527 | =for apidoc sv_backoff | |
1528 | ||
1529 | Remove any string offset. You should normally use the C<SvOOK_off> macro | |
1530 | wrapper instead. | |
1531 | ||
1532 | =cut | |
1533 | */ | |
1534 | ||
79072805 | 1535 | int |
864dbfa3 | 1536 | Perl_sv_backoff(pTHX_ register SV *sv) |
79072805 LW |
1537 | { |
1538 | assert(SvOOK(sv)); | |
463ee0b2 LW |
1539 | if (SvIVX(sv)) { |
1540 | char *s = SvPVX(sv); | |
1541 | SvLEN(sv) += SvIVX(sv); | |
1542 | SvPVX(sv) -= SvIVX(sv); | |
79072805 | 1543 | SvIV_set(sv, 0); |
463ee0b2 | 1544 | Move(s, SvPVX(sv), SvCUR(sv)+1, char); |
79072805 LW |
1545 | } |
1546 | SvFLAGS(sv) &= ~SVf_OOK; | |
a0d0e21e | 1547 | return 0; |
79072805 LW |
1548 | } |
1549 | ||
954c1994 GS |
1550 | /* |
1551 | =for apidoc sv_grow | |
1552 | ||
645c22ef DM |
1553 | Expands the character buffer in the SV. If necessary, uses C<sv_unref> and |
1554 | upgrades the SV to C<SVt_PV>. Returns a pointer to the character buffer. | |
1555 | Use the C<SvGROW> wrapper instead. | |
954c1994 GS |
1556 | |
1557 | =cut | |
1558 | */ | |
1559 | ||
79072805 | 1560 | char * |
864dbfa3 | 1561 | Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen) |
79072805 LW |
1562 | { |
1563 | register char *s; | |
1564 | ||
55497cff | 1565 | #ifdef HAS_64K_LIMIT |
79072805 | 1566 | if (newlen >= 0x10000) { |
1d7c1841 GS |
1567 | PerlIO_printf(Perl_debug_log, |
1568 | "Allocation too large: %"UVxf"\n", (UV)newlen); | |
79072805 LW |
1569 | my_exit(1); |
1570 | } | |
55497cff | 1571 | #endif /* HAS_64K_LIMIT */ |
a0d0e21e LW |
1572 | if (SvROK(sv)) |
1573 | sv_unref(sv); | |
79072805 LW |
1574 | if (SvTYPE(sv) < SVt_PV) { |
1575 | sv_upgrade(sv, SVt_PV); | |
463ee0b2 | 1576 | s = SvPVX(sv); |
79072805 LW |
1577 | } |
1578 | else if (SvOOK(sv)) { /* pv is offset? */ | |
1579 | sv_backoff(sv); | |
463ee0b2 | 1580 | s = SvPVX(sv); |
79072805 LW |
1581 | if (newlen > SvLEN(sv)) |
1582 | newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */ | |
c6f8c383 GA |
1583 | #ifdef HAS_64K_LIMIT |
1584 | if (newlen >= 0x10000) | |
1585 | newlen = 0xFFFF; | |
1586 | #endif | |
79072805 | 1587 | } |
bc44a8a2 | 1588 | else |
463ee0b2 | 1589 | s = SvPVX(sv); |
54f0641b | 1590 | |
79072805 | 1591 | if (newlen > SvLEN(sv)) { /* need more room? */ |
8d6dde3e | 1592 | if (SvLEN(sv) && s) { |
7bab3ede | 1593 | #ifdef MYMALLOC |
8d6dde3e IZ |
1594 | STRLEN l = malloced_size((void*)SvPVX(sv)); |
1595 | if (newlen <= l) { | |
1596 | SvLEN_set(sv, l); | |
1597 | return s; | |
1598 | } else | |
c70c8a0a | 1599 | #endif |
79072805 | 1600 | Renew(s,newlen,char); |
8d6dde3e | 1601 | } |
4e83176d | 1602 | else { |
4e83176d | 1603 | New(703, s, newlen, char); |
40565179 | 1604 | if (SvPVX(sv) && SvCUR(sv)) { |
54f0641b | 1605 | Move(SvPVX(sv), s, (newlen < SvCUR(sv)) ? newlen : SvCUR(sv), char); |
40565179 | 1606 | } |
4e83176d | 1607 | } |
79072805 LW |
1608 | SvPV_set(sv, s); |
1609 | SvLEN_set(sv, newlen); | |
1610 | } | |
1611 | return s; | |
1612 | } | |
1613 | ||
954c1994 GS |
1614 | /* |
1615 | =for apidoc sv_setiv | |
1616 | ||
645c22ef DM |
1617 | Copies an integer into the given SV, upgrading first if necessary. |
1618 | Does not handle 'set' magic. See also C<sv_setiv_mg>. | |
954c1994 GS |
1619 | |
1620 | =cut | |
1621 | */ | |
1622 | ||
79072805 | 1623 | void |
864dbfa3 | 1624 | Perl_sv_setiv(pTHX_ register SV *sv, IV i) |
79072805 | 1625 | { |
765f542d | 1626 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 LW |
1627 | switch (SvTYPE(sv)) { |
1628 | case SVt_NULL: | |
79072805 | 1629 | sv_upgrade(sv, SVt_IV); |
463ee0b2 LW |
1630 | break; |
1631 | case SVt_NV: | |
1632 | sv_upgrade(sv, SVt_PVNV); | |
1633 | break; | |
ed6116ce | 1634 | case SVt_RV: |
463ee0b2 | 1635 | case SVt_PV: |
79072805 | 1636 | sv_upgrade(sv, SVt_PVIV); |
463ee0b2 | 1637 | break; |
a0d0e21e LW |
1638 | |
1639 | case SVt_PVGV: | |
a0d0e21e LW |
1640 | case SVt_PVAV: |
1641 | case SVt_PVHV: | |
1642 | case SVt_PVCV: | |
1643 | case SVt_PVFM: | |
1644 | case SVt_PVIO: | |
411caa50 | 1645 | Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0), |
53e06cf0 | 1646 | OP_DESC(PL_op)); |
463ee0b2 | 1647 | } |
a0d0e21e | 1648 | (void)SvIOK_only(sv); /* validate number */ |
a5f75d66 | 1649 | SvIVX(sv) = i; |
463ee0b2 | 1650 | SvTAINT(sv); |
79072805 LW |
1651 | } |
1652 | ||
954c1994 GS |
1653 | /* |
1654 | =for apidoc sv_setiv_mg | |
1655 | ||
1656 | Like C<sv_setiv>, but also handles 'set' magic. | |
1657 | ||
1658 | =cut | |
1659 | */ | |
1660 | ||
79072805 | 1661 | void |
864dbfa3 | 1662 | Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i) |
ef50df4b GS |
1663 | { |
1664 | sv_setiv(sv,i); | |
1665 | SvSETMAGIC(sv); | |
1666 | } | |
1667 | ||
954c1994 GS |
1668 | /* |
1669 | =for apidoc sv_setuv | |
1670 | ||
645c22ef DM |
1671 | Copies an unsigned integer into the given SV, upgrading first if necessary. |
1672 | Does not handle 'set' magic. See also C<sv_setuv_mg>. | |
954c1994 GS |
1673 | |
1674 | =cut | |
1675 | */ | |
1676 | ||
ef50df4b | 1677 | void |
864dbfa3 | 1678 | Perl_sv_setuv(pTHX_ register SV *sv, UV u) |
55497cff | 1679 | { |
55ada374 NC |
1680 | /* With these two if statements: |
1681 | u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865 | |
d460ef45 | 1682 | |
55ada374 NC |
1683 | without |
1684 | u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865 | |
d460ef45 | 1685 | |
55ada374 NC |
1686 | If you wish to remove them, please benchmark to see what the effect is |
1687 | */ | |
28e5dec8 JH |
1688 | if (u <= (UV)IV_MAX) { |
1689 | sv_setiv(sv, (IV)u); | |
1690 | return; | |
1691 | } | |
25da4f38 IZ |
1692 | sv_setiv(sv, 0); |
1693 | SvIsUV_on(sv); | |
1694 | SvUVX(sv) = u; | |
55497cff | 1695 | } |
1696 | ||
954c1994 GS |
1697 | /* |
1698 | =for apidoc sv_setuv_mg | |
1699 | ||
1700 | Like C<sv_setuv>, but also handles 'set' magic. | |
1701 | ||
1702 | =cut | |
1703 | */ | |
1704 | ||
55497cff | 1705 | void |
864dbfa3 | 1706 | Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u) |
ef50df4b | 1707 | { |
55ada374 NC |
1708 | /* With these two if statements: |
1709 | u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865 | |
d460ef45 | 1710 | |
55ada374 NC |
1711 | without |
1712 | u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865 | |
d460ef45 | 1713 | |
55ada374 NC |
1714 | If you wish to remove them, please benchmark to see what the effect is |
1715 | */ | |
28e5dec8 JH |
1716 | if (u <= (UV)IV_MAX) { |
1717 | sv_setiv(sv, (IV)u); | |
1718 | } else { | |
1719 | sv_setiv(sv, 0); | |
1720 | SvIsUV_on(sv); | |
1721 | sv_setuv(sv,u); | |
1722 | } | |
ef50df4b GS |
1723 | SvSETMAGIC(sv); |
1724 | } | |
1725 | ||
954c1994 GS |
1726 | /* |
1727 | =for apidoc sv_setnv | |
1728 | ||
645c22ef DM |
1729 | Copies a double into the given SV, upgrading first if necessary. |
1730 | Does not handle 'set' magic. See also C<sv_setnv_mg>. | |
954c1994 GS |
1731 | |
1732 | =cut | |
1733 | */ | |
1734 | ||
ef50df4b | 1735 | void |
65202027 | 1736 | Perl_sv_setnv(pTHX_ register SV *sv, NV num) |
79072805 | 1737 | { |
765f542d | 1738 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
a0d0e21e LW |
1739 | switch (SvTYPE(sv)) { |
1740 | case SVt_NULL: | |
1741 | case SVt_IV: | |
79072805 | 1742 | sv_upgrade(sv, SVt_NV); |
a0d0e21e | 1743 | break; |
a0d0e21e LW |
1744 | case SVt_RV: |
1745 | case SVt_PV: | |
1746 | case SVt_PVIV: | |
79072805 | 1747 | sv_upgrade(sv, SVt_PVNV); |
a0d0e21e | 1748 | break; |
827b7e14 | 1749 | |
a0d0e21e | 1750 | case SVt_PVGV: |
a0d0e21e LW |
1751 | case SVt_PVAV: |
1752 | case SVt_PVHV: | |
1753 | case SVt_PVCV: | |
1754 | case SVt_PVFM: | |
1755 | case SVt_PVIO: | |
411caa50 | 1756 | Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0), |
53e06cf0 | 1757 | OP_NAME(PL_op)); |
79072805 | 1758 | } |
463ee0b2 | 1759 | SvNVX(sv) = num; |
a0d0e21e | 1760 | (void)SvNOK_only(sv); /* validate number */ |
463ee0b2 | 1761 | SvTAINT(sv); |
79072805 LW |
1762 | } |
1763 | ||
954c1994 GS |
1764 | /* |
1765 | =for apidoc sv_setnv_mg | |
1766 | ||
1767 | Like C<sv_setnv>, but also handles 'set' magic. | |
1768 | ||
1769 | =cut | |
1770 | */ | |
1771 | ||
ef50df4b | 1772 | void |
65202027 | 1773 | Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num) |
ef50df4b GS |
1774 | { |
1775 | sv_setnv(sv,num); | |
1776 | SvSETMAGIC(sv); | |
1777 | } | |
1778 | ||
645c22ef DM |
1779 | /* Print an "isn't numeric" warning, using a cleaned-up, |
1780 | * printable version of the offending string | |
1781 | */ | |
1782 | ||
76e3520e | 1783 | STATIC void |
cea2e8a9 | 1784 | S_not_a_number(pTHX_ SV *sv) |
a0d0e21e | 1785 | { |
94463019 JH |
1786 | SV *dsv; |
1787 | char tmpbuf[64]; | |
1788 | char *pv; | |
1789 | ||
1790 | if (DO_UTF8(sv)) { | |
1791 | dsv = sv_2mortal(newSVpv("", 0)); | |
1792 | pv = sv_uni_display(dsv, sv, 10, 0); | |
1793 | } else { | |
1794 | char *d = tmpbuf; | |
1795 | char *limit = tmpbuf + sizeof(tmpbuf) - 8; | |
1796 | /* each *s can expand to 4 chars + "...\0", | |
1797 | i.e. need room for 8 chars */ | |
ecdeb87c | 1798 | |
94463019 JH |
1799 | char *s, *end; |
1800 | for (s = SvPVX(sv), end = s + SvCUR(sv); s < end && d < limit; s++) { | |
1801 | int ch = *s & 0xFF; | |
1802 | if (ch & 128 && !isPRINT_LC(ch)) { | |
1803 | *d++ = 'M'; | |
1804 | *d++ = '-'; | |
1805 | ch &= 127; | |
1806 | } | |
1807 | if (ch == '\n') { | |
1808 | *d++ = '\\'; | |
1809 | *d++ = 'n'; | |
1810 | } | |
1811 | else if (ch == '\r') { | |
1812 | *d++ = '\\'; | |
1813 | *d++ = 'r'; | |
1814 | } | |
1815 | else if (ch == '\f') { | |
1816 | *d++ = '\\'; | |
1817 | *d++ = 'f'; | |
1818 | } | |
1819 | else if (ch == '\\') { | |
1820 | *d++ = '\\'; | |
1821 | *d++ = '\\'; | |
1822 | } | |
1823 | else if (ch == '\0') { | |
1824 | *d++ = '\\'; | |
1825 | *d++ = '0'; | |
1826 | } | |
1827 | else if (isPRINT_LC(ch)) | |
1828 | *d++ = ch; | |
1829 | else { | |
1830 | *d++ = '^'; | |
1831 | *d++ = toCTRL(ch); | |
1832 | } | |
1833 | } | |
1834 | if (s < end) { | |
1835 | *d++ = '.'; | |
1836 | *d++ = '.'; | |
1837 | *d++ = '.'; | |
1838 | } | |
1839 | *d = '\0'; | |
1840 | pv = tmpbuf; | |
a0d0e21e | 1841 | } |
a0d0e21e | 1842 | |
533c011a | 1843 | if (PL_op) |
9014280d | 1844 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 JH |
1845 | "Argument \"%s\" isn't numeric in %s", pv, |
1846 | OP_DESC(PL_op)); | |
a0d0e21e | 1847 | else |
9014280d | 1848 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 | 1849 | "Argument \"%s\" isn't numeric", pv); |
a0d0e21e LW |
1850 | } |
1851 | ||
c2988b20 NC |
1852 | /* |
1853 | =for apidoc looks_like_number | |
1854 | ||
645c22ef DM |
1855 | Test if the content of an SV looks like a number (or is a number). |
1856 | C<Inf> and C<Infinity> are treated as numbers (so will not issue a | |
1857 | non-numeric warning), even if your atof() doesn't grok them. | |
c2988b20 NC |
1858 | |
1859 | =cut | |
1860 | */ | |
1861 | ||
1862 | I32 | |
1863 | Perl_looks_like_number(pTHX_ SV *sv) | |
1864 | { | |
1865 | register char *sbegin; | |
1866 | STRLEN len; | |
1867 | ||
1868 | if (SvPOK(sv)) { | |
1869 | sbegin = SvPVX(sv); | |
1870 | len = SvCUR(sv); | |
1871 | } | |
1872 | else if (SvPOKp(sv)) | |
1873 | sbegin = SvPV(sv, len); | |
1874 | else | |
1875 | return 1; /* Historic. Wrong? */ | |
1876 | return grok_number(sbegin, len, NULL); | |
1877 | } | |
25da4f38 IZ |
1878 | |
1879 | /* Actually, ISO C leaves conversion of UV to IV undefined, but | |
1880 | until proven guilty, assume that things are not that bad... */ | |
1881 | ||
645c22ef DM |
1882 | /* |
1883 | NV_PRESERVES_UV: | |
1884 | ||
1885 | As 64 bit platforms often have an NV that doesn't preserve all bits of | |
28e5dec8 JH |
1886 | an IV (an assumption perl has been based on to date) it becomes necessary |
1887 | to remove the assumption that the NV always carries enough precision to | |
1888 | recreate the IV whenever needed, and that the NV is the canonical form. | |
1889 | Instead, IV/UV and NV need to be given equal rights. So as to not lose | |
645c22ef | 1890 | precision as a side effect of conversion (which would lead to insanity |
28e5dec8 JH |
1891 | and the dragon(s) in t/op/numconvert.t getting very angry) the intent is |
1892 | 1) to distinguish between IV/UV/NV slots that have cached a valid | |
1893 | conversion where precision was lost and IV/UV/NV slots that have a | |
1894 | valid conversion which has lost no precision | |
645c22ef | 1895 | 2) to ensure that if a numeric conversion to one form is requested that |
28e5dec8 JH |
1896 | would lose precision, the precise conversion (or differently |
1897 | imprecise conversion) is also performed and cached, to prevent | |
1898 | requests for different numeric formats on the same SV causing | |
1899 | lossy conversion chains. (lossless conversion chains are perfectly | |
1900 | acceptable (still)) | |
1901 | ||
1902 | ||
1903 | flags are used: | |
1904 | SvIOKp is true if the IV slot contains a valid value | |
1905 | SvIOK is true only if the IV value is accurate (UV if SvIOK_UV true) | |
1906 | SvNOKp is true if the NV slot contains a valid value | |
1907 | SvNOK is true only if the NV value is accurate | |
1908 | ||
1909 | so | |
645c22ef | 1910 | while converting from PV to NV, check to see if converting that NV to an |
28e5dec8 JH |
1911 | IV(or UV) would lose accuracy over a direct conversion from PV to |
1912 | IV(or UV). If it would, cache both conversions, return NV, but mark | |
1913 | SV as IOK NOKp (ie not NOK). | |
1914 | ||
645c22ef | 1915 | While converting from PV to IV, check to see if converting that IV to an |
28e5dec8 JH |
1916 | NV would lose accuracy over a direct conversion from PV to NV. If it |
1917 | would, cache both conversions, flag similarly. | |
1918 | ||
1919 | Before, the SV value "3.2" could become NV=3.2 IV=3 NOK, IOK quite | |
1920 | correctly because if IV & NV were set NV *always* overruled. | |
645c22ef DM |
1921 | Now, "3.2" will become NV=3.2 IV=3 NOK, IOKp, because the flag's meaning |
1922 | changes - now IV and NV together means that the two are interchangeable: | |
28e5dec8 | 1923 | SvIVX == (IV) SvNVX && SvNVX == (NV) SvIVX; |
d460ef45 | 1924 | |
645c22ef DM |
1925 | The benefit of this is that operations such as pp_add know that if |
1926 | SvIOK is true for both left and right operands, then integer addition | |
1927 | can be used instead of floating point (for cases where the result won't | |
1928 | overflow). Before, floating point was always used, which could lead to | |
28e5dec8 JH |
1929 | loss of precision compared with integer addition. |
1930 | ||
1931 | * making IV and NV equal status should make maths accurate on 64 bit | |
1932 | platforms | |
1933 | * may speed up maths somewhat if pp_add and friends start to use | |
645c22ef | 1934 | integers when possible instead of fp. (Hopefully the overhead in |
28e5dec8 JH |
1935 | looking for SvIOK and checking for overflow will not outweigh the |
1936 | fp to integer speedup) | |
1937 | * will slow down integer operations (callers of SvIV) on "inaccurate" | |
1938 | values, as the change from SvIOK to SvIOKp will cause a call into | |
1939 | sv_2iv each time rather than a macro access direct to the IV slot | |
1940 | * should speed up number->string conversion on integers as IV is | |
645c22ef | 1941 | favoured when IV and NV are equally accurate |
28e5dec8 JH |
1942 | |
1943 | #################################################################### | |
645c22ef DM |
1944 | You had better be using SvIOK_notUV if you want an IV for arithmetic: |
1945 | SvIOK is true if (IV or UV), so you might be getting (IV)SvUV. | |
1946 | On the other hand, SvUOK is true iff UV. | |
28e5dec8 JH |
1947 | #################################################################### |
1948 | ||
645c22ef | 1949 | Your mileage will vary depending your CPU's relative fp to integer |
28e5dec8 JH |
1950 | performance ratio. |
1951 | */ | |
1952 | ||
1953 | #ifndef NV_PRESERVES_UV | |
645c22ef DM |
1954 | # define IS_NUMBER_UNDERFLOW_IV 1 |
1955 | # define IS_NUMBER_UNDERFLOW_UV 2 | |
1956 | # define IS_NUMBER_IV_AND_UV 2 | |
1957 | # define IS_NUMBER_OVERFLOW_IV 4 | |
1958 | # define IS_NUMBER_OVERFLOW_UV 5 | |
1959 | ||
1960 | /* sv_2iuv_non_preserve(): private routine for use by sv_2iv() and sv_2uv() */ | |
28e5dec8 JH |
1961 | |
1962 | /* For sv_2nv these three cases are "SvNOK and don't bother casting" */ | |
1963 | STATIC int | |
645c22ef | 1964 | S_sv_2iuv_non_preserve(pTHX_ register SV *sv, I32 numtype) |
28e5dec8 | 1965 | { |
1779d84d | 1966 | 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 |
1967 | if (SvNVX(sv) < (NV)IV_MIN) { |
1968 | (void)SvIOKp_on(sv); | |
1969 | (void)SvNOK_on(sv); | |
1970 | SvIVX(sv) = IV_MIN; | |
1971 | return IS_NUMBER_UNDERFLOW_IV; | |
1972 | } | |
1973 | if (SvNVX(sv) > (NV)UV_MAX) { | |
1974 | (void)SvIOKp_on(sv); | |
1975 | (void)SvNOK_on(sv); | |
1976 | SvIsUV_on(sv); | |
1977 | SvUVX(sv) = UV_MAX; | |
1978 | return IS_NUMBER_OVERFLOW_UV; | |
1979 | } | |
c2988b20 NC |
1980 | (void)SvIOKp_on(sv); |
1981 | (void)SvNOK_on(sv); | |
1982 | /* Can't use strtol etc to convert this string. (See truth table in | |
1983 | sv_2iv */ | |
1984 | if (SvNVX(sv) <= (UV)IV_MAX) { | |
1985 | SvIVX(sv) = I_V(SvNVX(sv)); | |
1986 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { | |
1987 | SvIOK_on(sv); /* Integer is precise. NOK, IOK */ | |
1988 | } else { | |
1989 | /* Integer is imprecise. NOK, IOKp */ | |
1990 | } | |
1991 | return SvNVX(sv) < 0 ? IS_NUMBER_UNDERFLOW_UV : IS_NUMBER_IV_AND_UV; | |
1992 | } | |
1993 | SvIsUV_on(sv); | |
1994 | SvUVX(sv) = U_V(SvNVX(sv)); | |
1995 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
1996 | if (SvUVX(sv) == UV_MAX) { | |
1997 | /* As we know that NVs don't preserve UVs, UV_MAX cannot | |
1998 | possibly be preserved by NV. Hence, it must be overflow. | |
1999 | NOK, IOKp */ | |
2000 | return IS_NUMBER_OVERFLOW_UV; | |
2001 | } | |
2002 | SvIOK_on(sv); /* Integer is precise. NOK, UOK */ | |
2003 | } else { | |
2004 | /* Integer is imprecise. NOK, IOKp */ | |
28e5dec8 | 2005 | } |
c2988b20 | 2006 | return IS_NUMBER_OVERFLOW_IV; |
28e5dec8 | 2007 | } |
645c22ef DM |
2008 | #endif /* !NV_PRESERVES_UV*/ |
2009 | ||
2010 | /* | |
2011 | =for apidoc sv_2iv | |
2012 | ||
2013 | Return the integer value of an SV, doing any necessary string conversion, | |
2014 | magic etc. Normally used via the C<SvIV(sv)> and C<SvIVx(sv)> macros. | |
2015 | ||
2016 | =cut | |
2017 | */ | |
28e5dec8 | 2018 | |
a0d0e21e | 2019 | IV |
864dbfa3 | 2020 | Perl_sv_2iv(pTHX_ register SV *sv) |
79072805 LW |
2021 | { |
2022 | if (!sv) | |
2023 | return 0; | |
8990e307 | 2024 | if (SvGMAGICAL(sv)) { |
463ee0b2 LW |
2025 | mg_get(sv); |
2026 | if (SvIOKp(sv)) | |
2027 | return SvIVX(sv); | |
748a9306 | 2028 | if (SvNOKp(sv)) { |
25da4f38 | 2029 | return I_V(SvNVX(sv)); |
748a9306 | 2030 | } |
36477c24 | 2031 | if (SvPOKp(sv) && SvLEN(sv)) |
2032 | return asIV(sv); | |
3fe9a6f1 | 2033 | if (!SvROK(sv)) { |
d008e5eb | 2034 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2035 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
1d7c1841 | 2036 | report_uninit(); |
c6ee37c5 | 2037 | } |
36477c24 | 2038 | return 0; |
3fe9a6f1 | 2039 | } |
463ee0b2 | 2040 | } |
ed6116ce | 2041 | if (SvTHINKFIRST(sv)) { |
a0d0e21e | 2042 | if (SvROK(sv)) { |
a0d0e21e | 2043 | SV* tmpstr; |
1554e226 | 2044 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2045 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2046 | return SvIV(tmpstr); |
56431972 | 2047 | return PTR2IV(SvRV(sv)); |
a0d0e21e | 2048 | } |
765f542d NC |
2049 | if (SvIsCOW(sv)) { |
2050 | sv_force_normal_flags(sv, 0); | |
47deb5e7 | 2051 | } |
0336b60e | 2052 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2053 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 | 2054 | report_uninit(); |
ed6116ce LW |
2055 | return 0; |
2056 | } | |
79072805 | 2057 | } |
25da4f38 IZ |
2058 | if (SvIOKp(sv)) { |
2059 | if (SvIsUV(sv)) { | |
2060 | return (IV)(SvUVX(sv)); | |
2061 | } | |
2062 | else { | |
2063 | return SvIVX(sv); | |
2064 | } | |
463ee0b2 | 2065 | } |
748a9306 | 2066 | if (SvNOKp(sv)) { |
28e5dec8 JH |
2067 | /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv |
2068 | * without also getting a cached IV/UV from it at the same time | |
2069 | * (ie PV->NV conversion should detect loss of accuracy and cache | |
2070 | * IV or UV at same time to avoid this. NWC */ | |
25da4f38 IZ |
2071 | |
2072 | if (SvTYPE(sv) == SVt_NV) | |
2073 | sv_upgrade(sv, SVt_PVNV); | |
2074 | ||
28e5dec8 JH |
2075 | (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */ |
2076 | /* < not <= as for NV doesn't preserve UV, ((NV)IV_MAX+1) will almost | |
2077 | certainly cast into the IV range at IV_MAX, whereas the correct | |
2078 | answer is the UV IV_MAX +1. Hence < ensures that dodgy boundary | |
2079 | cases go to UV */ | |
2080 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
748a9306 | 2081 | SvIVX(sv) = I_V(SvNVX(sv)); |
28e5dec8 JH |
2082 | if (SvNVX(sv) == (NV) SvIVX(sv) |
2083 | #ifndef NV_PRESERVES_UV | |
2084 | && (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2085 | (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv))) | |
2086 | /* Don't flag it as "accurately an integer" if the number | |
2087 | came from a (by definition imprecise) NV operation, and | |
2088 | we're outside the range of NV integer precision */ | |
2089 | #endif | |
2090 | ) { | |
2091 | SvIOK_on(sv); /* Can this go wrong with rounding? NWC */ | |
2092 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2093 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (precise)\n", |
28e5dec8 JH |
2094 | PTR2UV(sv), |
2095 | SvNVX(sv), | |
2096 | SvIVX(sv))); | |
2097 | ||
2098 | } else { | |
2099 | /* IV not precise. No need to convert from PV, as NV | |
2100 | conversion would already have cached IV if it detected | |
2101 | that PV->IV would be better than PV->NV->IV | |
2102 | flags already correct - don't set public IOK. */ | |
2103 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2104 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (imprecise)\n", |
28e5dec8 JH |
2105 | PTR2UV(sv), |
2106 | SvNVX(sv), | |
2107 | SvIVX(sv))); | |
2108 | } | |
2109 | /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN, | |
2110 | but the cast (NV)IV_MIN rounds to a the value less (more | |
2111 | negative) than IV_MIN which happens to be equal to SvNVX ?? | |
2112 | Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and | |
2113 | NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and | |
2114 | (NV)UVX == NVX are both true, but the values differ. :-( | |
2115 | Hopefully for 2s complement IV_MIN is something like | |
2116 | 0x8000000000000000 which will be exact. NWC */ | |
d460ef45 | 2117 | } |
25da4f38 | 2118 | else { |
ff68c719 | 2119 | SvUVX(sv) = U_V(SvNVX(sv)); |
28e5dec8 JH |
2120 | if ( |
2121 | (SvNVX(sv) == (NV) SvUVX(sv)) | |
2122 | #ifndef NV_PRESERVES_UV | |
2123 | /* Make sure it's not 0xFFFFFFFFFFFFFFFF */ | |
2124 | /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */ | |
2125 | && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv)) | |
2126 | /* Don't flag it as "accurately an integer" if the number | |
2127 | came from a (by definition imprecise) NV operation, and | |
2128 | we're outside the range of NV integer precision */ | |
2129 | #endif | |
2130 | ) | |
2131 | SvIOK_on(sv); | |
25da4f38 IZ |
2132 | SvIsUV_on(sv); |
2133 | ret_iv_max: | |
1c846c1f | 2134 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
57def98f | 2135 | "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n", |
56431972 | 2136 | PTR2UV(sv), |
57def98f JH |
2137 | SvUVX(sv), |
2138 | SvUVX(sv))); | |
25da4f38 IZ |
2139 | return (IV)SvUVX(sv); |
2140 | } | |
748a9306 LW |
2141 | } |
2142 | else if (SvPOKp(sv) && SvLEN(sv)) { | |
c2988b20 NC |
2143 | UV value; |
2144 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
25da4f38 IZ |
2145 | /* We want to avoid a possible problem when we cache an IV which |
2146 | may be later translated to an NV, and the resulting NV is not | |
c2988b20 NC |
2147 | the same as the direct translation of the initial string |
2148 | (eg 123.456 can shortcut to the IV 123 with atol(), but we must | |
2149 | be careful to ensure that the value with the .456 is around if the | |
2150 | NV value is requested in the future). | |
1c846c1f | 2151 | |
25da4f38 IZ |
2152 | This means that if we cache such an IV, we need to cache the |
2153 | NV as well. Moreover, we trade speed for space, and do not | |
28e5dec8 | 2154 | cache the NV if we are sure it's not needed. |
25da4f38 | 2155 | */ |
16b7a9a4 | 2156 | |
c2988b20 NC |
2157 | /* SVt_PVNV is one higher than SVt_PVIV, hence this order */ |
2158 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2159 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2160 | /* It's definitely an integer, only upgrade to PVIV */ |
28e5dec8 JH |
2161 | if (SvTYPE(sv) < SVt_PVIV) |
2162 | sv_upgrade(sv, SVt_PVIV); | |
f7bbb42a | 2163 | (void)SvIOK_on(sv); |
c2988b20 NC |
2164 | } else if (SvTYPE(sv) < SVt_PVNV) |
2165 | sv_upgrade(sv, SVt_PVNV); | |
28e5dec8 | 2166 | |
c2988b20 NC |
2167 | /* If NV preserves UV then we only use the UV value if we know that |
2168 | we aren't going to call atof() below. If NVs don't preserve UVs | |
2169 | then the value returned may have more precision than atof() will | |
2170 | return, even though value isn't perfectly accurate. */ | |
2171 | if ((numtype & (IS_NUMBER_IN_UV | |
2172 | #ifdef NV_PRESERVES_UV | |
2173 | | IS_NUMBER_NOT_INT | |
2174 | #endif | |
2175 | )) == IS_NUMBER_IN_UV) { | |
2176 | /* This won't turn off the public IOK flag if it was set above */ | |
2177 | (void)SvIOKp_on(sv); | |
2178 | ||
2179 | if (!(numtype & IS_NUMBER_NEG)) { | |
2180 | /* positive */; | |
2181 | if (value <= (UV)IV_MAX) { | |
2182 | SvIVX(sv) = (IV)value; | |
2183 | } else { | |
2184 | SvUVX(sv) = value; | |
2185 | SvIsUV_on(sv); | |
2186 | } | |
2187 | } else { | |
2188 | /* 2s complement assumption */ | |
2189 | if (value <= (UV)IV_MIN) { | |
2190 | SvIVX(sv) = -(IV)value; | |
2191 | } else { | |
2192 | /* Too negative for an IV. This is a double upgrade, but | |
d1be9408 | 2193 | I'm assuming it will be rare. */ |
c2988b20 NC |
2194 | if (SvTYPE(sv) < SVt_PVNV) |
2195 | sv_upgrade(sv, SVt_PVNV); | |
2196 | SvNOK_on(sv); | |
2197 | SvIOK_off(sv); | |
2198 | SvIOKp_on(sv); | |
2199 | SvNVX(sv) = -(NV)value; | |
2200 | SvIVX(sv) = IV_MIN; | |
2201 | } | |
2202 | } | |
2203 | } | |
2204 | /* For !NV_PRESERVES_UV and IS_NUMBER_IN_UV and IS_NUMBER_NOT_INT we | |
2205 | will be in the previous block to set the IV slot, and the next | |
2206 | block to set the NV slot. So no else here. */ | |
2207 | ||
2208 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2209 | != IS_NUMBER_IN_UV) { | |
2210 | /* It wasn't an (integer that doesn't overflow the UV). */ | |
2211 | SvNVX(sv) = Atof(SvPVX(sv)); | |
28e5dec8 | 2212 | |
c2988b20 NC |
2213 | if (! numtype && ckWARN(WARN_NUMERIC)) |
2214 | not_a_number(sv); | |
28e5dec8 | 2215 | |
65202027 | 2216 | #if defined(USE_LONG_DOUBLE) |
c2988b20 NC |
2217 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%" PERL_PRIgldbl ")\n", |
2218 | PTR2UV(sv), SvNVX(sv))); | |
65202027 | 2219 | #else |
1779d84d | 2220 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"NVgf")\n", |
c2988b20 | 2221 | PTR2UV(sv), SvNVX(sv))); |
65202027 | 2222 | #endif |
28e5dec8 JH |
2223 | |
2224 | ||
2225 | #ifdef NV_PRESERVES_UV | |
c2988b20 NC |
2226 | (void)SvIOKp_on(sv); |
2227 | (void)SvNOK_on(sv); | |
2228 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
2229 | SvIVX(sv) = I_V(SvNVX(sv)); | |
2230 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { | |
2231 | SvIOK_on(sv); | |
28e5dec8 | 2232 | } else { |
c2988b20 NC |
2233 | /* Integer is imprecise. NOK, IOKp */ |
2234 | } | |
2235 | /* UV will not work better than IV */ | |
2236 | } else { | |
2237 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2238 | SvIsUV_on(sv); | |
2239 | /* Integer is inaccurate. NOK, IOKp, is UV */ | |
2240 | SvUVX(sv) = UV_MAX; | |
2241 | SvIsUV_on(sv); | |
2242 | } else { | |
2243 | SvUVX(sv) = U_V(SvNVX(sv)); | |
2244 | /* 0xFFFFFFFFFFFFFFFF not an issue in here */ | |
2245 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
2246 | SvIOK_on(sv); | |
28e5dec8 JH |
2247 | SvIsUV_on(sv); |
2248 | } else { | |
c2988b20 NC |
2249 | /* Integer is imprecise. NOK, IOKp, is UV */ |
2250 | SvIsUV_on(sv); | |
28e5dec8 | 2251 | } |
28e5dec8 | 2252 | } |
c2988b20 NC |
2253 | goto ret_iv_max; |
2254 | } | |
28e5dec8 | 2255 | #else /* NV_PRESERVES_UV */ |
c2988b20 NC |
2256 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2257 | == (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) { | |
2258 | /* The IV slot will have been set from value returned by | |
2259 | grok_number above. The NV slot has just been set using | |
2260 | Atof. */ | |
560b0c46 | 2261 | SvNOK_on(sv); |
c2988b20 NC |
2262 | assert (SvIOKp(sv)); |
2263 | } else { | |
2264 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2265 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { | |
2266 | /* Small enough to preserve all bits. */ | |
2267 | (void)SvIOKp_on(sv); | |
2268 | SvNOK_on(sv); | |
2269 | SvIVX(sv) = I_V(SvNVX(sv)); | |
2270 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) | |
2271 | SvIOK_on(sv); | |
2272 | /* Assumption: first non-preserved integer is < IV_MAX, | |
2273 | this NV is in the preserved range, therefore: */ | |
2274 | if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)) | |
2275 | < (UV)IV_MAX)) { | |
32fdb065 | 2276 | 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 |
2277 | } |
2278 | } else { | |
2279 | /* IN_UV NOT_INT | |
2280 | 0 0 already failed to read UV. | |
2281 | 0 1 already failed to read UV. | |
2282 | 1 0 you won't get here in this case. IV/UV | |
2283 | slot set, public IOK, Atof() unneeded. | |
2284 | 1 1 already read UV. | |
2285 | so there's no point in sv_2iuv_non_preserve() attempting | |
2286 | to use atol, strtol, strtoul etc. */ | |
2287 | if (sv_2iuv_non_preserve (sv, numtype) | |
2288 | >= IS_NUMBER_OVERFLOW_IV) | |
2289 | goto ret_iv_max; | |
2290 | } | |
2291 | } | |
28e5dec8 | 2292 | #endif /* NV_PRESERVES_UV */ |
25da4f38 | 2293 | } |
28e5dec8 | 2294 | } else { |
599cee73 | 2295 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) |
1d7c1841 | 2296 | report_uninit(); |
25da4f38 IZ |
2297 | if (SvTYPE(sv) < SVt_IV) |
2298 | /* Typically the caller expects that sv_any is not NULL now. */ | |
2299 | sv_upgrade(sv, SVt_IV); | |
a0d0e21e | 2300 | return 0; |
79072805 | 2301 | } |
1d7c1841 GS |
2302 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n", |
2303 | PTR2UV(sv),SvIVX(sv))); | |
25da4f38 | 2304 | return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv); |
79072805 LW |
2305 | } |
2306 | ||
645c22ef DM |
2307 | /* |
2308 | =for apidoc sv_2uv | |
2309 | ||
2310 | Return the unsigned integer value of an SV, doing any necessary string | |
2311 | conversion, magic etc. Normally used via the C<SvUV(sv)> and C<SvUVx(sv)> | |
2312 | macros. | |
2313 | ||
2314 | =cut | |
2315 | */ | |
2316 | ||
ff68c719 | 2317 | UV |
864dbfa3 | 2318 | Perl_sv_2uv(pTHX_ register SV *sv) |
ff68c719 | 2319 | { |
2320 | if (!sv) | |
2321 | return 0; | |
2322 | if (SvGMAGICAL(sv)) { | |
2323 | mg_get(sv); | |
2324 | if (SvIOKp(sv)) | |
2325 | return SvUVX(sv); | |
2326 | if (SvNOKp(sv)) | |
2327 | return U_V(SvNVX(sv)); | |
36477c24 | 2328 | if (SvPOKp(sv) && SvLEN(sv)) |
2329 | return asUV(sv); | |
3fe9a6f1 | 2330 | if (!SvROK(sv)) { |
d008e5eb | 2331 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2332 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
1d7c1841 | 2333 | report_uninit(); |
c6ee37c5 | 2334 | } |
36477c24 | 2335 | return 0; |
3fe9a6f1 | 2336 | } |
ff68c719 | 2337 | } |
2338 | if (SvTHINKFIRST(sv)) { | |
2339 | if (SvROK(sv)) { | |
ff68c719 | 2340 | SV* tmpstr; |
1554e226 | 2341 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2342 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2343 | return SvUV(tmpstr); |
56431972 | 2344 | return PTR2UV(SvRV(sv)); |
ff68c719 | 2345 | } |
765f542d NC |
2346 | if (SvIsCOW(sv)) { |
2347 | sv_force_normal_flags(sv, 0); | |
8a818333 | 2348 | } |
0336b60e | 2349 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2350 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 | 2351 | report_uninit(); |
ff68c719 | 2352 | return 0; |
2353 | } | |
2354 | } | |
25da4f38 IZ |
2355 | if (SvIOKp(sv)) { |
2356 | if (SvIsUV(sv)) { | |
2357 | return SvUVX(sv); | |
2358 | } | |
2359 | else { | |
2360 | return (UV)SvIVX(sv); | |
2361 | } | |
ff68c719 | 2362 | } |
2363 | if (SvNOKp(sv)) { | |
28e5dec8 JH |
2364 | /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv |
2365 | * without also getting a cached IV/UV from it at the same time | |
2366 | * (ie PV->NV conversion should detect loss of accuracy and cache | |
2367 | * IV or UV at same time to avoid this. */ | |
2368 | /* IV-over-UV optimisation - choose to cache IV if possible */ | |
2369 | ||
25da4f38 IZ |
2370 | if (SvTYPE(sv) == SVt_NV) |
2371 | sv_upgrade(sv, SVt_PVNV); | |
28e5dec8 JH |
2372 | |
2373 | (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */ | |
2374 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
f7bbb42a | 2375 | SvIVX(sv) = I_V(SvNVX(sv)); |
28e5dec8 JH |
2376 | if (SvNVX(sv) == (NV) SvIVX(sv) |
2377 | #ifndef NV_PRESERVES_UV | |
2378 | && (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2379 | (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv))) | |
2380 | /* Don't flag it as "accurately an integer" if the number | |
2381 | came from a (by definition imprecise) NV operation, and | |
2382 | we're outside the range of NV integer precision */ | |
2383 | #endif | |
2384 | ) { | |
2385 | SvIOK_on(sv); /* Can this go wrong with rounding? NWC */ | |
2386 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2387 | "0x%"UVxf" uv(%"NVgf" => %"IVdf") (precise)\n", |
28e5dec8 JH |
2388 | PTR2UV(sv), |
2389 | SvNVX(sv), | |
2390 | SvIVX(sv))); | |
2391 | ||
2392 | } else { | |
2393 | /* IV not precise. No need to convert from PV, as NV | |
2394 | conversion would already have cached IV if it detected | |
2395 | that PV->IV would be better than PV->NV->IV | |
2396 | flags already correct - don't set public IOK. */ | |
2397 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2398 | "0x%"UVxf" uv(%"NVgf" => %"IVdf") (imprecise)\n", |
28e5dec8 JH |
2399 | PTR2UV(sv), |
2400 | SvNVX(sv), | |
2401 | SvIVX(sv))); | |
2402 | } | |
2403 | /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN, | |
2404 | but the cast (NV)IV_MIN rounds to a the value less (more | |
2405 | negative) than IV_MIN which happens to be equal to SvNVX ?? | |
2406 | Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and | |
2407 | NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and | |
2408 | (NV)UVX == NVX are both true, but the values differ. :-( | |
2409 | Hopefully for 2s complement IV_MIN is something like | |
2410 | 0x8000000000000000 which will be exact. NWC */ | |
d460ef45 | 2411 | } |
28e5dec8 JH |
2412 | else { |
2413 | SvUVX(sv) = U_V(SvNVX(sv)); | |
2414 | if ( | |
2415 | (SvNVX(sv) == (NV) SvUVX(sv)) | |
2416 | #ifndef NV_PRESERVES_UV | |
2417 | /* Make sure it's not 0xFFFFFFFFFFFFFFFF */ | |
2418 | /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */ | |
2419 | && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv)) | |
2420 | /* Don't flag it as "accurately an integer" if the number | |
2421 | came from a (by definition imprecise) NV operation, and | |
2422 | we're outside the range of NV integer precision */ | |
2423 | #endif | |
2424 | ) | |
2425 | SvIOK_on(sv); | |
2426 | SvIsUV_on(sv); | |
1c846c1f | 2427 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
28e5dec8 | 2428 | "0x%"UVxf" 2uv(%"UVuf" => %"IVdf") (as unsigned)\n", |
57def98f | 2429 | PTR2UV(sv), |
28e5dec8 JH |
2430 | SvUVX(sv), |
2431 | SvUVX(sv))); | |
25da4f38 | 2432 | } |
ff68c719 | 2433 | } |
2434 | else if (SvPOKp(sv) && SvLEN(sv)) { | |
c2988b20 NC |
2435 | UV value; |
2436 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
25da4f38 IZ |
2437 | |
2438 | /* We want to avoid a possible problem when we cache a UV which | |
2439 | may be later translated to an NV, and the resulting NV is not | |
2440 | the translation of the initial data. | |
1c846c1f | 2441 | |
25da4f38 IZ |
2442 | This means that if we cache such a UV, we need to cache the |
2443 | NV as well. Moreover, we trade speed for space, and do not | |
2444 | cache the NV if not needed. | |
2445 | */ | |
16b7a9a4 | 2446 | |
c2988b20 NC |
2447 | /* SVt_PVNV is one higher than SVt_PVIV, hence this order */ |
2448 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2449 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2450 | /* It's definitely an integer, only upgrade to PVIV */ |
28e5dec8 | 2451 | if (SvTYPE(sv) < SVt_PVIV) |
f7bbb42a JH |
2452 | sv_upgrade(sv, SVt_PVIV); |
2453 | (void)SvIOK_on(sv); | |
c2988b20 NC |
2454 | } else if (SvTYPE(sv) < SVt_PVNV) |
2455 | sv_upgrade(sv, SVt_PVNV); | |
d460ef45 | 2456 | |
c2988b20 NC |
2457 | /* If NV preserves UV then we only use the UV value if we know that |
2458 | we aren't going to call atof() below. If NVs don't preserve UVs | |
2459 | then the value returned may have more precision than atof() will | |
2460 | return, even though it isn't accurate. */ | |
2461 | if ((numtype & (IS_NUMBER_IN_UV | |
2462 | #ifdef NV_PRESERVES_UV | |
2463 | | IS_NUMBER_NOT_INT | |
2464 | #endif | |
2465 | )) == IS_NUMBER_IN_UV) { | |
2466 | /* This won't turn off the public IOK flag if it was set above */ | |
2467 | (void)SvIOKp_on(sv); | |
2468 | ||
2469 | if (!(numtype & IS_NUMBER_NEG)) { | |
2470 | /* positive */; | |
2471 | if (value <= (UV)IV_MAX) { | |
2472 | SvIVX(sv) = (IV)value; | |
28e5dec8 JH |
2473 | } else { |
2474 | /* it didn't overflow, and it was positive. */ | |
c2988b20 | 2475 | SvUVX(sv) = value; |
28e5dec8 JH |
2476 | SvIsUV_on(sv); |
2477 | } | |
c2988b20 NC |
2478 | } else { |
2479 | /* 2s complement assumption */ | |
2480 | if (value <= (UV)IV_MIN) { | |
2481 | SvIVX(sv) = -(IV)value; | |
2482 | } else { | |
2483 | /* Too negative for an IV. This is a double upgrade, but | |
d1be9408 | 2484 | I'm assuming it will be rare. */ |
c2988b20 NC |
2485 | if (SvTYPE(sv) < SVt_PVNV) |
2486 | sv_upgrade(sv, SVt_PVNV); | |
2487 | SvNOK_on(sv); | |
2488 | SvIOK_off(sv); | |
2489 | SvIOKp_on(sv); | |
2490 | SvNVX(sv) = -(NV)value; | |
2491 | SvIVX(sv) = IV_MIN; | |
2492 | } | |
2493 | } | |
2494 | } | |
2495 | ||
2496 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2497 | != IS_NUMBER_IN_UV) { | |
2498 | /* It wasn't an integer, or it overflowed the UV. */ | |
2499 | SvNVX(sv) = Atof(SvPVX(sv)); | |
28e5dec8 | 2500 | |
c2988b20 | 2501 | if (! numtype && ckWARN(WARN_NUMERIC)) |
28e5dec8 JH |
2502 | not_a_number(sv); |
2503 | ||
2504 | #if defined(USE_LONG_DOUBLE) | |
c2988b20 NC |
2505 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%" PERL_PRIgldbl ")\n", |
2506 | PTR2UV(sv), SvNVX(sv))); | |
28e5dec8 | 2507 | #else |
1779d84d | 2508 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"NVgf")\n", |
c2988b20 | 2509 | PTR2UV(sv), SvNVX(sv))); |
28e5dec8 JH |
2510 | #endif |
2511 | ||
2512 | #ifdef NV_PRESERVES_UV | |
c2988b20 NC |
2513 | (void)SvIOKp_on(sv); |
2514 | (void)SvNOK_on(sv); | |
2515 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
2516 | SvIVX(sv) = I_V(SvNVX(sv)); | |
2517 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { | |
2518 | SvIOK_on(sv); | |
2519 | } else { | |
2520 | /* Integer is imprecise. NOK, IOKp */ | |
2521 | } | |
2522 | /* UV will not work better than IV */ | |
2523 | } else { | |
2524 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2525 | SvIsUV_on(sv); | |
2526 | /* Integer is inaccurate. NOK, IOKp, is UV */ | |
2527 | SvUVX(sv) = UV_MAX; | |
2528 | SvIsUV_on(sv); | |
2529 | } else { | |
2530 | SvUVX(sv) = U_V(SvNVX(sv)); | |
2531 | /* 0xFFFFFFFFFFFFFFFF not an issue in here, NVs | |
2532 | NV preservse UV so can do correct comparison. */ | |
2533 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
2534 | SvIOK_on(sv); | |
2535 | SvIsUV_on(sv); | |
2536 | } else { | |
2537 | /* Integer is imprecise. NOK, IOKp, is UV */ | |
2538 | SvIsUV_on(sv); | |
2539 | } | |
2540 | } | |
2541 | } | |
28e5dec8 | 2542 | #else /* NV_PRESERVES_UV */ |
c2988b20 NC |
2543 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2544 | == (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) { | |
2545 | /* The UV slot will have been set from value returned by | |
2546 | grok_number above. The NV slot has just been set using | |
2547 | Atof. */ | |
560b0c46 | 2548 | SvNOK_on(sv); |
c2988b20 NC |
2549 | assert (SvIOKp(sv)); |
2550 | } else { | |
2551 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2552 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { | |
2553 | /* Small enough to preserve all bits. */ | |
2554 | (void)SvIOKp_on(sv); | |
2555 | SvNOK_on(sv); | |
2556 | SvIVX(sv) = I_V(SvNVX(sv)); | |
2557 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) | |
2558 | SvIOK_on(sv); | |
2559 | /* Assumption: first non-preserved integer is < IV_MAX, | |
2560 | this NV is in the preserved range, therefore: */ | |
2561 | if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)) | |
2562 | < (UV)IV_MAX)) { | |
32fdb065 | 2563 | 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 |
2564 | } |
2565 | } else | |
2566 | sv_2iuv_non_preserve (sv, numtype); | |
2567 | } | |
28e5dec8 | 2568 | #endif /* NV_PRESERVES_UV */ |
f7bbb42a | 2569 | } |
ff68c719 | 2570 | } |
2571 | else { | |
d008e5eb | 2572 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2573 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
1d7c1841 | 2574 | report_uninit(); |
c6ee37c5 | 2575 | } |
25da4f38 IZ |
2576 | if (SvTYPE(sv) < SVt_IV) |
2577 | /* Typically the caller expects that sv_any is not NULL now. */ | |
2578 | sv_upgrade(sv, SVt_IV); | |
ff68c719 | 2579 | return 0; |
2580 | } | |
25da4f38 | 2581 | |
1d7c1841 GS |
2582 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n", |
2583 | PTR2UV(sv),SvUVX(sv))); | |
25da4f38 | 2584 | return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv); |
ff68c719 | 2585 | } |
2586 | ||
645c22ef DM |
2587 | /* |
2588 | =for apidoc sv_2nv | |
2589 | ||
2590 | Return the num value of an SV, doing any necessary string or integer | |
2591 | conversion, magic etc. Normally used via the C<SvNV(sv)> and C<SvNVx(sv)> | |
2592 | macros. | |
2593 | ||
2594 | =cut | |
2595 | */ | |
2596 | ||
65202027 | 2597 | NV |
864dbfa3 | 2598 | Perl_sv_2nv(pTHX_ register SV *sv) |
79072805 LW |
2599 | { |
2600 | if (!sv) | |
2601 | return 0.0; | |
8990e307 | 2602 | if (SvGMAGICAL(sv)) { |
463ee0b2 LW |
2603 | mg_get(sv); |
2604 | if (SvNOKp(sv)) | |
2605 | return SvNVX(sv); | |
a0d0e21e | 2606 | if (SvPOKp(sv) && SvLEN(sv)) { |
c2988b20 NC |
2607 | if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && |
2608 | !grok_number(SvPVX(sv), SvCUR(sv), NULL)) | |
a0d0e21e | 2609 | not_a_number(sv); |
097ee67d | 2610 | return Atof(SvPVX(sv)); |
a0d0e21e | 2611 | } |
25da4f38 | 2612 | if (SvIOKp(sv)) { |
1c846c1f | 2613 | if (SvIsUV(sv)) |
65202027 | 2614 | return (NV)SvUVX(sv); |
25da4f38 | 2615 | else |
65202027 | 2616 | return (NV)SvIVX(sv); |
25da4f38 | 2617 | } |
16d20bd9 | 2618 | if (!SvROK(sv)) { |
d008e5eb | 2619 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2620 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
1d7c1841 | 2621 | report_uninit(); |
c6ee37c5 | 2622 | } |
16d20bd9 AD |
2623 | return 0; |
2624 | } | |
463ee0b2 | 2625 | } |
ed6116ce | 2626 | if (SvTHINKFIRST(sv)) { |
a0d0e21e | 2627 | if (SvROK(sv)) { |
a0d0e21e | 2628 | SV* tmpstr; |
1554e226 | 2629 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2630 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2631 | return SvNV(tmpstr); |
56431972 | 2632 | return PTR2NV(SvRV(sv)); |
a0d0e21e | 2633 | } |
765f542d NC |
2634 | if (SvIsCOW(sv)) { |
2635 | sv_force_normal_flags(sv, 0); | |
8a818333 | 2636 | } |
0336b60e | 2637 | if (SvREADONLY(sv) && !SvOK(sv)) { |
599cee73 | 2638 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 | 2639 | report_uninit(); |
ed6116ce LW |
2640 | return 0.0; |
2641 | } | |
79072805 LW |
2642 | } |
2643 | if (SvTYPE(sv) < SVt_NV) { | |
463ee0b2 LW |
2644 | if (SvTYPE(sv) == SVt_IV) |
2645 | sv_upgrade(sv, SVt_PVNV); | |
2646 | else | |
2647 | sv_upgrade(sv, SVt_NV); | |
906f284f | 2648 | #ifdef USE_LONG_DOUBLE |
097ee67d | 2649 | DEBUG_c({ |
f93f4e46 | 2650 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
2651 | PerlIO_printf(Perl_debug_log, |
2652 | "0x%"UVxf" num(%" PERL_PRIgldbl ")\n", | |
2653 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
2654 | RESTORE_NUMERIC_LOCAL(); |
2655 | }); | |
65202027 | 2656 | #else |
572bbb43 | 2657 | DEBUG_c({ |
f93f4e46 | 2658 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 2659 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%"NVgf")\n", |
1d7c1841 | 2660 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
2661 | RESTORE_NUMERIC_LOCAL(); |
2662 | }); | |
572bbb43 | 2663 | #endif |
79072805 LW |
2664 | } |
2665 | else if (SvTYPE(sv) < SVt_PVNV) | |
2666 | sv_upgrade(sv, SVt_PVNV); | |
59d8ce62 NC |
2667 | if (SvNOKp(sv)) { |
2668 | return SvNVX(sv); | |
61604483 | 2669 | } |
59d8ce62 | 2670 | if (SvIOKp(sv)) { |
65202027 | 2671 | SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv); |
28e5dec8 JH |
2672 | #ifdef NV_PRESERVES_UV |
2673 | SvNOK_on(sv); | |
2674 | #else | |
2675 | /* Only set the public NV OK flag if this NV preserves the IV */ | |
2676 | /* Check it's not 0xFFFFFFFFFFFFFFFF */ | |
2677 | if (SvIsUV(sv) ? ((SvUVX(sv) != UV_MAX)&&(SvUVX(sv) == U_V(SvNVX(sv)))) | |
2678 | : (SvIVX(sv) == I_V(SvNVX(sv)))) | |
2679 | SvNOK_on(sv); | |
2680 | else | |
2681 | SvNOKp_on(sv); | |
2682 | #endif | |
93a17b20 | 2683 | } |
748a9306 | 2684 | else if (SvPOKp(sv) && SvLEN(sv)) { |
c2988b20 NC |
2685 | UV value; |
2686 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
2687 | if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !numtype) | |
a0d0e21e | 2688 | not_a_number(sv); |
28e5dec8 | 2689 | #ifdef NV_PRESERVES_UV |
c2988b20 NC |
2690 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2691 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2692 | /* It's definitely an integer */ |
c2988b20 NC |
2693 | SvNVX(sv) = (numtype & IS_NUMBER_NEG) ? -(NV)value : (NV)value; |
2694 | } else | |
2695 | SvNVX(sv) = Atof(SvPVX(sv)); | |
28e5dec8 JH |
2696 | SvNOK_on(sv); |
2697 | #else | |
c2988b20 | 2698 | SvNVX(sv) = Atof(SvPVX(sv)); |
28e5dec8 JH |
2699 | /* Only set the public NV OK flag if this NV preserves the value in |
2700 | the PV at least as well as an IV/UV would. | |
2701 | Not sure how to do this 100% reliably. */ | |
2702 | /* if that shift count is out of range then Configure's test is | |
2703 | wonky. We shouldn't be in here with NV_PRESERVES_UV_BITS == | |
2704 | UV_BITS */ | |
2705 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
c2988b20 | 2706 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { |
28e5dec8 | 2707 | SvNOK_on(sv); /* Definitely small enough to preserve all bits */ |
c2988b20 NC |
2708 | } else if (!(numtype & IS_NUMBER_IN_UV)) { |
2709 | /* Can't use strtol etc to convert this string, so don't try. | |
2710 | sv_2iv and sv_2uv will use the NV to convert, not the PV. */ | |
2711 | SvNOK_on(sv); | |
2712 | } else { | |
2713 | /* value has been set. It may not be precise. */ | |
2714 | if ((numtype & IS_NUMBER_NEG) && (value > (UV)IV_MIN)) { | |
2715 | /* 2s complement assumption for (UV)IV_MIN */ | |
2716 | SvNOK_on(sv); /* Integer is too negative. */ | |
2717 | } else { | |
2718 | SvNOKp_on(sv); | |
2719 | SvIOKp_on(sv); | |
6fa402ec | 2720 | |
c2988b20 NC |
2721 | if (numtype & IS_NUMBER_NEG) { |
2722 | SvIVX(sv) = -(IV)value; | |
2723 | } else if (value <= (UV)IV_MAX) { | |
2724 | SvIVX(sv) = (IV)value; | |
2725 | } else { | |
2726 | SvUVX(sv) = value; | |
2727 | SvIsUV_on(sv); | |
2728 | } | |
2729 | ||
2730 | if (numtype & IS_NUMBER_NOT_INT) { | |
2731 | /* I believe that even if the original PV had decimals, | |
2732 | they are lost beyond the limit of the FP precision. | |
2733 | However, neither is canonical, so both only get p | |
2734 | flags. NWC, 2000/11/25 */ | |
2735 | /* Both already have p flags, so do nothing */ | |
2736 | } else { | |
2737 | NV nv = SvNVX(sv); | |
2738 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
2739 | if (SvIVX(sv) == I_V(nv)) { | |
2740 | SvNOK_on(sv); | |
2741 | SvIOK_on(sv); | |
2742 | } else { | |
2743 | SvIOK_on(sv); | |
2744 | /* It had no "." so it must be integer. */ | |
2745 | } | |
2746 | } else { | |
2747 | /* between IV_MAX and NV(UV_MAX). | |
2748 | Could be slightly > UV_MAX */ | |
6fa402ec | 2749 | |
c2988b20 NC |
2750 | if (numtype & IS_NUMBER_NOT_INT) { |
2751 | /* UV and NV both imprecise. */ | |
2752 | } else { | |
2753 | UV nv_as_uv = U_V(nv); | |
2754 | ||
2755 | if (value == nv_as_uv && SvUVX(sv) != UV_MAX) { | |
2756 | SvNOK_on(sv); | |
2757 | SvIOK_on(sv); | |
2758 | } else { | |
2759 | SvIOK_on(sv); | |
2760 | } | |
2761 | } | |
2762 | } | |
2763 | } | |
2764 | } | |
2765 | } | |
28e5dec8 | 2766 | #endif /* NV_PRESERVES_UV */ |
93a17b20 | 2767 | } |
79072805 | 2768 | else { |
599cee73 | 2769 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) |
1d7c1841 | 2770 | report_uninit(); |
25da4f38 IZ |
2771 | if (SvTYPE(sv) < SVt_NV) |
2772 | /* Typically the caller expects that sv_any is not NULL now. */ | |
28e5dec8 JH |
2773 | /* XXX Ilya implies that this is a bug in callers that assume this |
2774 | and ideally should be fixed. */ | |
25da4f38 | 2775 | sv_upgrade(sv, SVt_NV); |
a0d0e21e | 2776 | return 0.0; |
79072805 | 2777 | } |
572bbb43 | 2778 | #if defined(USE_LONG_DOUBLE) |
097ee67d | 2779 | DEBUG_c({ |
f93f4e46 | 2780 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
2781 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n", |
2782 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
2783 | RESTORE_NUMERIC_LOCAL(); |
2784 | }); | |
65202027 | 2785 | #else |
572bbb43 | 2786 | DEBUG_c({ |
f93f4e46 | 2787 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 2788 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%"NVgf")\n", |
1d7c1841 | 2789 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
2790 | RESTORE_NUMERIC_LOCAL(); |
2791 | }); | |
572bbb43 | 2792 | #endif |
463ee0b2 | 2793 | return SvNVX(sv); |
79072805 LW |
2794 | } |
2795 | ||
645c22ef DM |
2796 | /* asIV(): extract an integer from the string value of an SV. |
2797 | * Caller must validate PVX */ | |
2798 | ||
76e3520e | 2799 | STATIC IV |
cea2e8a9 | 2800 | S_asIV(pTHX_ SV *sv) |
36477c24 | 2801 | { |
c2988b20 NC |
2802 | UV value; |
2803 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
2804 | ||
2805 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2806 | == IS_NUMBER_IN_UV) { | |
645c22ef | 2807 | /* It's definitely an integer */ |
c2988b20 NC |
2808 | if (numtype & IS_NUMBER_NEG) { |
2809 | if (value < (UV)IV_MIN) | |
2810 | return -(IV)value; | |
2811 | } else { | |
2812 | if (value < (UV)IV_MAX) | |
2813 | return (IV)value; | |
2814 | } | |
2815 | } | |
d008e5eb | 2816 | if (!numtype) { |
d008e5eb GS |
2817 | if (ckWARN(WARN_NUMERIC)) |
2818 | not_a_number(sv); | |
2819 | } | |
c2988b20 | 2820 | return I_V(Atof(SvPVX(sv))); |
36477c24 | 2821 | } |
2822 | ||
645c22ef DM |
2823 | /* asUV(): extract an unsigned integer from the string value of an SV |
2824 | * Caller must validate PVX */ | |
2825 | ||
76e3520e | 2826 | STATIC UV |
cea2e8a9 | 2827 | S_asUV(pTHX_ SV *sv) |
36477c24 | 2828 | { |
c2988b20 NC |
2829 | UV value; |
2830 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
36477c24 | 2831 | |
c2988b20 NC |
2832 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2833 | == IS_NUMBER_IN_UV) { | |
645c22ef | 2834 | /* It's definitely an integer */ |
6fa402ec | 2835 | if (!(numtype & IS_NUMBER_NEG)) |
c2988b20 NC |
2836 | return value; |
2837 | } | |
d008e5eb | 2838 | if (!numtype) { |
d008e5eb GS |
2839 | if (ckWARN(WARN_NUMERIC)) |
2840 | not_a_number(sv); | |
2841 | } | |
097ee67d | 2842 | return U_V(Atof(SvPVX(sv))); |
36477c24 | 2843 | } |
2844 | ||
645c22ef DM |
2845 | /* |
2846 | =for apidoc sv_2pv_nolen | |
2847 | ||
2848 | Like C<sv_2pv()>, but doesn't return the length too. You should usually | |
2849 | use the macro wrapper C<SvPV_nolen(sv)> instead. | |
2850 | =cut | |
2851 | */ | |
2852 | ||
79072805 | 2853 | char * |
864dbfa3 | 2854 | Perl_sv_2pv_nolen(pTHX_ register SV *sv) |
1fa8b10d JD |
2855 | { |
2856 | STRLEN n_a; | |
2857 | return sv_2pv(sv, &n_a); | |
2858 | } | |
2859 | ||
645c22ef DM |
2860 | /* uiv_2buf(): private routine for use by sv_2pv_flags(): print an IV or |
2861 | * UV as a string towards the end of buf, and return pointers to start and | |
2862 | * end of it. | |
2863 | * | |
2864 | * We assume that buf is at least TYPE_CHARS(UV) long. | |
2865 | */ | |
2866 | ||
864dbfa3 | 2867 | static char * |
25da4f38 IZ |
2868 | uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob) |
2869 | { | |
25da4f38 IZ |
2870 | char *ptr = buf + TYPE_CHARS(UV); |
2871 | char *ebuf = ptr; | |
2872 | int sign; | |
25da4f38 IZ |
2873 | |
2874 | if (is_uv) | |
2875 | sign = 0; | |
2876 | else if (iv >= 0) { | |
2877 | uv = iv; | |
2878 | sign = 0; | |
2879 | } else { | |
2880 | uv = -iv; | |
2881 | sign = 1; | |
2882 | } | |
2883 | do { | |
eb160463 | 2884 | *--ptr = '0' + (char)(uv % 10); |
25da4f38 IZ |
2885 | } while (uv /= 10); |
2886 | if (sign) | |
2887 | *--ptr = '-'; | |
2888 | *peob = ebuf; | |
2889 | return ptr; | |
2890 | } | |
2891 | ||
09540bc3 JH |
2892 | /* sv_2pv() is now a macro using Perl_sv_2pv_flags(); |
2893 | * this function provided for binary compatibility only | |
2894 | */ | |
2895 | ||
2896 | char * | |
2897 | Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp) | |
2898 | { | |
2899 | return sv_2pv_flags(sv, lp, SV_GMAGIC); | |
2900 | } | |
2901 | ||
645c22ef DM |
2902 | /* |
2903 | =for apidoc sv_2pv_flags | |
2904 | ||
ff276b08 | 2905 | Returns a pointer to the string value of an SV, and sets *lp to its length. |
645c22ef DM |
2906 | If flags includes SV_GMAGIC, does an mg_get() first. Coerces sv to a string |
2907 | if necessary. | |
2908 | Normally invoked via the C<SvPV_flags> macro. C<sv_2pv()> and C<sv_2pv_nomg> | |
2909 | usually end up here too. | |
2910 | ||
2911 | =cut | |
2912 | */ | |
2913 | ||
8d6d96c1 HS |
2914 | char * |
2915 | Perl_sv_2pv_flags(pTHX_ register SV *sv, STRLEN *lp, I32 flags) | |
2916 | { | |
79072805 LW |
2917 | register char *s; |
2918 | int olderrno; | |
cb50f42d | 2919 | SV *tsv, *origsv; |
25da4f38 IZ |
2920 | char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */ |
2921 | char *tmpbuf = tbuf; | |
79072805 | 2922 | |
463ee0b2 LW |
2923 | if (!sv) { |
2924 | *lp = 0; | |
2925 | return ""; | |
2926 | } | |
8990e307 | 2927 | if (SvGMAGICAL(sv)) { |
8d6d96c1 HS |
2928 | if (flags & SV_GMAGIC) |
2929 | mg_get(sv); | |
463ee0b2 LW |
2930 | if (SvPOKp(sv)) { |
2931 | *lp = SvCUR(sv); | |
2932 | return SvPVX(sv); | |
2933 | } | |
cf2093f6 | 2934 | if (SvIOKp(sv)) { |
1c846c1f | 2935 | if (SvIsUV(sv)) |
57def98f | 2936 | (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv)); |
cf2093f6 | 2937 | else |
57def98f | 2938 | (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv)); |
46fc3d4c | 2939 | tsv = Nullsv; |
a0d0e21e | 2940 | goto tokensave; |
463ee0b2 LW |
2941 | } |
2942 | if (SvNOKp(sv)) { | |
2d4389e4 | 2943 | Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf); |
46fc3d4c | 2944 | tsv = Nullsv; |
a0d0e21e | 2945 | goto tokensave; |
463ee0b2 | 2946 | } |
16d20bd9 | 2947 | if (!SvROK(sv)) { |
d008e5eb | 2948 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2949 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
1d7c1841 | 2950 | report_uninit(); |
c6ee37c5 | 2951 | } |
16d20bd9 AD |
2952 | *lp = 0; |
2953 | return ""; | |
2954 | } | |
463ee0b2 | 2955 | } |
ed6116ce LW |
2956 | if (SvTHINKFIRST(sv)) { |
2957 | if (SvROK(sv)) { | |
a0d0e21e | 2958 | SV* tmpstr; |
1554e226 | 2959 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) && |
b4b9a328 | 2960 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) { |
446eaa42 YST |
2961 | char *pv = SvPV(tmpstr, *lp); |
2962 | if (SvUTF8(tmpstr)) | |
2963 | SvUTF8_on(sv); | |
2964 | else | |
2965 | SvUTF8_off(sv); | |
2966 | return pv; | |
2967 | } | |
cb50f42d | 2968 | origsv = sv; |
ed6116ce LW |
2969 | sv = (SV*)SvRV(sv); |
2970 | if (!sv) | |
2971 | s = "NULLREF"; | |
2972 | else { | |
f9277f47 IZ |
2973 | MAGIC *mg; |
2974 | ||
ed6116ce | 2975 | switch (SvTYPE(sv)) { |
f9277f47 IZ |
2976 | case SVt_PVMG: |
2977 | if ( ((SvFLAGS(sv) & | |
1c846c1f | 2978 | (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG)) |
faf82a0b | 2979 | == (SVs_OBJECT|SVs_SMG)) |
14befaf4 | 2980 | && (mg = mg_find(sv, PERL_MAGIC_qr))) { |
2cd61cdb | 2981 | regexp *re = (regexp *)mg->mg_obj; |
1bd3ad17 | 2982 | |
2cd61cdb | 2983 | if (!mg->mg_ptr) { |
8782bef2 GB |
2984 | char *fptr = "msix"; |
2985 | char reflags[6]; | |
2986 | char ch; | |
2987 | int left = 0; | |
2988 | int right = 4; | |
ff385a1b | 2989 | char need_newline = 0; |
eb160463 | 2990 | U16 reganch = (U16)((re->reganch & PMf_COMPILETIME) >> 12); |
8782bef2 | 2991 | |
155aba94 | 2992 | while((ch = *fptr++)) { |
8782bef2 GB |
2993 | if(reganch & 1) { |
2994 | reflags[left++] = ch; | |
2995 | } | |
2996 | else { | |
2997 | reflags[right--] = ch; | |
2998 | } | |
2999 | reganch >>= 1; | |
3000 | } | |
3001 | if(left != 4) { | |
3002 | reflags[left] = '-'; | |
3003 | left = 5; | |
3004 | } | |
3005 | ||
3006 | mg->mg_len = re->prelen + 4 + left; | |
ff385a1b JF |
3007 | /* |
3008 | * If /x was used, we have to worry about a regex | |
3009 | * ending with a comment later being embedded | |
3010 | * within another regex. If so, we don't want this | |
3011 | * regex's "commentization" to leak out to the | |
3012 | * right part of the enclosing regex, we must cap | |
3013 | * it with a newline. | |
3014 | * | |
3015 | * So, if /x was used, we scan backwards from the | |
3016 | * end of the regex. If we find a '#' before we | |
3017 | * find a newline, we need to add a newline | |
3018 | * ourself. If we find a '\n' first (or if we | |
3019 | * don't find '#' or '\n'), we don't need to add | |
3020 | * anything. -jfriedl | |
3021 | */ | |
3022 | if (PMf_EXTENDED & re->reganch) | |
3023 | { | |
3024 | char *endptr = re->precomp + re->prelen; | |
3025 | while (endptr >= re->precomp) | |
3026 | { | |
3027 | char c = *(endptr--); | |
3028 | if (c == '\n') | |
3029 | break; /* don't need another */ | |
3030 | if (c == '#') { | |
3031 | /* we end while in a comment, so we | |
3032 | need a newline */ | |
3033 | mg->mg_len++; /* save space for it */ | |
3034 | need_newline = 1; /* note to add it */ | |
ab01544f | 3035 | break; |
ff385a1b JF |
3036 | } |
3037 | } | |
3038 | } | |
3039 | ||
8782bef2 GB |
3040 | New(616, mg->mg_ptr, mg->mg_len + 1 + left, char); |
3041 | Copy("(?", mg->mg_ptr, 2, char); | |
3042 | Copy(reflags, mg->mg_ptr+2, left, char); | |
3043 | Copy(":", mg->mg_ptr+left+2, 1, char); | |
3044 | Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char); | |
ff385a1b JF |
3045 | if (need_newline) |
3046 | mg->mg_ptr[mg->mg_len - 2] = '\n'; | |
1bd3ad17 IZ |
3047 | mg->mg_ptr[mg->mg_len - 1] = ')'; |
3048 | mg->mg_ptr[mg->mg_len] = 0; | |
3049 | } | |
3280af22 | 3050 | PL_reginterp_cnt += re->program[0].next_off; |
cb50f42d YST |
3051 | |
3052 | if (re->reganch & ROPT_UTF8) | |
3053 | SvUTF8_on(origsv); | |
3054 | else | |
3055 | SvUTF8_off(origsv); | |
1bd3ad17 IZ |
3056 | *lp = mg->mg_len; |
3057 | return mg->mg_ptr; | |
f9277f47 IZ |
3058 | } |
3059 | /* Fall through */ | |
ed6116ce LW |
3060 | case SVt_NULL: |
3061 | case SVt_IV: | |
3062 | case SVt_NV: | |
3063 | case SVt_RV: | |
3064 | case SVt_PV: | |
3065 | case SVt_PVIV: | |
3066 | case SVt_PVNV: | |
81689caa HS |
3067 | case SVt_PVBM: if (SvROK(sv)) |
3068 | s = "REF"; | |
3069 | else | |
3070 | s = "SCALAR"; break; | |
ed6116ce LW |
3071 | case SVt_PVLV: s = "LVALUE"; break; |
3072 | case SVt_PVAV: s = "ARRAY"; break; | |
3073 | case SVt_PVHV: s = "HASH"; break; | |
3074 | case SVt_PVCV: s = "CODE"; break; | |
3075 | case SVt_PVGV: s = "GLOB"; break; | |
1d2dff63 | 3076 | case SVt_PVFM: s = "FORMAT"; break; |
36477c24 | 3077 | case SVt_PVIO: s = "IO"; break; |
ed6116ce LW |
3078 | default: s = "UNKNOWN"; break; |
3079 | } | |
46fc3d4c | 3080 | tsv = NEWSV(0,0); |
de11ba31 AMS |
3081 | if (SvOBJECT(sv)) |
3082 | Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s); | |
ed6116ce | 3083 | else |
46fc3d4c | 3084 | sv_setpv(tsv, s); |
57def98f | 3085 | Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv)); |
a0d0e21e | 3086 | goto tokensaveref; |
463ee0b2 | 3087 | } |
ed6116ce LW |
3088 | *lp = strlen(s); |
3089 | return s; | |
79072805 | 3090 | } |
0336b60e | 3091 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 3092 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 | 3093 | report_uninit(); |
ed6116ce LW |
3094 | *lp = 0; |
3095 | return ""; | |
79072805 | 3096 | } |
79072805 | 3097 | } |
28e5dec8 JH |
3098 | if (SvIOK(sv) || ((SvIOKp(sv) && !SvNOKp(sv)))) { |
3099 | /* I'm assuming that if both IV and NV are equally valid then | |
3100 | converting the IV is going to be more efficient */ | |
3101 | U32 isIOK = SvIOK(sv); | |
3102 | U32 isUIOK = SvIsUV(sv); | |
3103 | char buf[TYPE_CHARS(UV)]; | |
3104 | char *ebuf, *ptr; | |
3105 | ||
3106 | if (SvTYPE(sv) < SVt_PVIV) | |
3107 | sv_upgrade(sv, SVt_PVIV); | |
3108 | if (isUIOK) | |
3109 | ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf); | |
3110 | else | |
3111 | ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf); | |
eb160463 | 3112 | SvGROW(sv, (STRLEN)(ebuf - ptr + 1)); /* inlined from sv_setpvn */ |
28e5dec8 JH |
3113 | Move(ptr,SvPVX(sv),ebuf - ptr,char); |
3114 | SvCUR_set(sv, ebuf - ptr); | |
3115 | s = SvEND(sv); | |
3116 | *s = '\0'; | |
3117 | if (isIOK) | |
3118 | SvIOK_on(sv); | |
3119 | else | |
3120 | SvIOKp_on(sv); | |
3121 | if (isUIOK) | |
3122 | SvIsUV_on(sv); | |
3123 | } | |
3124 | else if (SvNOKp(sv)) { | |
79072805 LW |
3125 | if (SvTYPE(sv) < SVt_PVNV) |
3126 | sv_upgrade(sv, SVt_PVNV); | |
1c846c1f | 3127 | /* The +20 is pure guesswork. Configure test needed. --jhi */ |
59155cc0 | 3128 | SvGROW(sv, NV_DIG + 20); |
463ee0b2 | 3129 | s = SvPVX(sv); |
79072805 | 3130 | olderrno = errno; /* some Xenix systems wipe out errno here */ |
79072805 | 3131 | #ifdef apollo |
463ee0b2 | 3132 | if (SvNVX(sv) == 0.0) |
79072805 LW |
3133 | (void)strcpy(s,"0"); |
3134 | else | |
3135 | #endif /*apollo*/ | |
bbce6d69 | 3136 | { |
2d4389e4 | 3137 | Gconvert(SvNVX(sv), NV_DIG, 0, s); |
bbce6d69 | 3138 | } |
79072805 | 3139 | errno = olderrno; |
a0d0e21e LW |
3140 | #ifdef FIXNEGATIVEZERO |
3141 | if (*s == '-' && s[1] == '0' && !s[2]) | |
3142 | strcpy(s,"0"); | |
3143 | #endif | |
79072805 LW |
3144 | while (*s) s++; |
3145 | #ifdef hcx | |
3146 | if (s[-1] == '.') | |
46fc3d4c | 3147 | *--s = '\0'; |
79072805 LW |
3148 | #endif |
3149 | } | |
79072805 | 3150 | else { |
0336b60e IZ |
3151 | if (ckWARN(WARN_UNINITIALIZED) |
3152 | && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) | |
1d7c1841 | 3153 | report_uninit(); |
a0d0e21e | 3154 | *lp = 0; |
25da4f38 IZ |
3155 | if (SvTYPE(sv) < SVt_PV) |
3156 | /* Typically the caller expects that sv_any is not NULL now. */ | |
3157 | sv_upgrade(sv, SVt_PV); | |
a0d0e21e | 3158 | return ""; |
79072805 | 3159 | } |
463ee0b2 LW |
3160 | *lp = s - SvPVX(sv); |
3161 | SvCUR_set(sv, *lp); | |
79072805 | 3162 | SvPOK_on(sv); |
1d7c1841 GS |
3163 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
3164 | PTR2UV(sv),SvPVX(sv))); | |
463ee0b2 | 3165 | return SvPVX(sv); |
a0d0e21e LW |
3166 | |
3167 | tokensave: | |
3168 | if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */ | |
3169 | /* Sneaky stuff here */ | |
3170 | ||
3171 | tokensaveref: | |
46fc3d4c | 3172 | if (!tsv) |
96827780 | 3173 | tsv = newSVpv(tmpbuf, 0); |
46fc3d4c | 3174 | sv_2mortal(tsv); |
3175 | *lp = SvCUR(tsv); | |
3176 | return SvPVX(tsv); | |
a0d0e21e LW |
3177 | } |
3178 | else { | |
3179 | STRLEN len; | |
46fc3d4c | 3180 | char *t; |
3181 | ||
3182 | if (tsv) { | |
3183 | sv_2mortal(tsv); | |
3184 | t = SvPVX(tsv); | |
3185 | len = SvCUR(tsv); | |
3186 | } | |
3187 | else { | |
96827780 MB |
3188 | t = tmpbuf; |
3189 | len = strlen(tmpbuf); | |
46fc3d4c | 3190 | } |
a0d0e21e | 3191 | #ifdef FIXNEGATIVEZERO |
46fc3d4c | 3192 | if (len == 2 && t[0] == '-' && t[1] == '0') { |
3193 | t = "0"; | |
3194 | len = 1; | |
3195 | } | |
a0d0e21e LW |
3196 | #endif |
3197 | (void)SvUPGRADE(sv, SVt_PV); | |
46fc3d4c | 3198 | *lp = len; |
a0d0e21e LW |
3199 | s = SvGROW(sv, len + 1); |
3200 | SvCUR_set(sv, len); | |
46fc3d4c | 3201 | (void)strcpy(s, t); |
6bf554b4 | 3202 | SvPOKp_on(sv); |
a0d0e21e LW |
3203 | return s; |
3204 | } | |
463ee0b2 LW |
3205 | } |
3206 | ||
645c22ef | 3207 | /* |
6050d10e JP |
3208 | =for apidoc sv_copypv |
3209 | ||
3210 | Copies a stringified representation of the source SV into the | |
3211 | destination SV. Automatically performs any necessary mg_get and | |
54f0641b | 3212 | coercion of numeric values into strings. Guaranteed to preserve |
6050d10e | 3213 | UTF-8 flag even from overloaded objects. Similar in nature to |
54f0641b NIS |
3214 | sv_2pv[_flags] but operates directly on an SV instead of just the |
3215 | string. Mostly uses sv_2pv_flags to do its work, except when that | |
6050d10e JP |
3216 | would lose the UTF-8'ness of the PV. |
3217 | ||
3218 | =cut | |
3219 | */ | |
3220 | ||
3221 | void | |
3222 | Perl_sv_copypv(pTHX_ SV *dsv, register SV *ssv) | |
3223 | { | |
446eaa42 YST |
3224 | STRLEN len; |
3225 | char *s; | |
3226 | s = SvPV(ssv,len); | |
cb50f42d | 3227 | sv_setpvn(dsv,s,len); |
446eaa42 | 3228 | if (SvUTF8(ssv)) |
cb50f42d | 3229 | SvUTF8_on(dsv); |
446eaa42 | 3230 | else |
cb50f42d | 3231 | SvUTF8_off(dsv); |
6050d10e JP |
3232 | } |
3233 | ||
3234 | /* | |
645c22ef DM |
3235 | =for apidoc sv_2pvbyte_nolen |
3236 | ||
3237 | Return a pointer to the byte-encoded representation of the SV. | |
3238 | May cause the SV to be downgraded from UTF8 as a side-effect. | |
3239 | ||
3240 | Usually accessed via the C<SvPVbyte_nolen> macro. | |
3241 | ||
3242 | =cut | |
3243 | */ | |
3244 | ||
7340a771 GS |
3245 | char * |
3246 | Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv) | |
3247 | { | |
560a288e GS |
3248 | STRLEN n_a; |
3249 | return sv_2pvbyte(sv, &n_a); | |
7340a771 GS |
3250 | } |
3251 | ||
645c22ef DM |
3252 | /* |
3253 | =for apidoc sv_2pvbyte | |
3254 | ||
3255 | Return a pointer to the byte-encoded representation of the SV, and set *lp | |
3256 | to its length. May cause the SV to be downgraded from UTF8 as a | |
3257 | side-effect. | |
3258 | ||
3259 | Usually accessed via the C<SvPVbyte> macro. | |
3260 | ||
3261 | =cut | |
3262 | */ | |
3263 | ||
7340a771 GS |
3264 | char * |
3265 | Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp) | |
3266 | { | |
0875d2fe NIS |
3267 | sv_utf8_downgrade(sv,0); |
3268 | return SvPV(sv,*lp); | |
7340a771 GS |
3269 | } |
3270 | ||
645c22ef DM |
3271 | /* |
3272 | =for apidoc sv_2pvutf8_nolen | |
3273 | ||
3274 | Return a pointer to the UTF8-encoded representation of the SV. | |
3275 | May cause the SV to be upgraded to UTF8 as a side-effect. | |
3276 | ||
3277 | Usually accessed via the C<SvPVutf8_nolen> macro. | |
3278 | ||
3279 | =cut | |
3280 | */ | |
3281 | ||
7340a771 GS |
3282 | char * |
3283 | Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv) | |
3284 | { | |
560a288e GS |
3285 | STRLEN n_a; |
3286 | return sv_2pvutf8(sv, &n_a); | |
7340a771 GS |
3287 | } |
3288 | ||
645c22ef DM |
3289 | /* |
3290 | =for apidoc sv_2pvutf8 | |
3291 | ||
3292 | Return a pointer to the UTF8-encoded representation of the SV, and set *lp | |
3293 | to its length. May cause the SV to be upgraded to UTF8 as a side-effect. | |
3294 | ||
3295 | Usually accessed via the C<SvPVutf8> macro. | |
3296 | ||
3297 | =cut | |
3298 | */ | |
3299 | ||
7340a771 GS |
3300 | char * |
3301 | Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp) | |
3302 | { | |
560a288e | 3303 | sv_utf8_upgrade(sv); |
7d59b7e4 | 3304 | return SvPV(sv,*lp); |
7340a771 | 3305 | } |
1c846c1f | 3306 | |
645c22ef DM |
3307 | /* |
3308 | =for apidoc sv_2bool | |
3309 | ||
3310 | This function is only called on magical items, and is only used by | |
8cf8f3d1 | 3311 | sv_true() or its macro equivalent. |
645c22ef DM |
3312 | |
3313 | =cut | |
3314 | */ | |
3315 | ||
463ee0b2 | 3316 | bool |
864dbfa3 | 3317 | Perl_sv_2bool(pTHX_ register SV *sv) |
463ee0b2 | 3318 | { |
8990e307 | 3319 | if (SvGMAGICAL(sv)) |
463ee0b2 LW |
3320 | mg_get(sv); |
3321 | ||
a0d0e21e LW |
3322 | if (!SvOK(sv)) |
3323 | return 0; | |
3324 | if (SvROK(sv)) { | |
a0d0e21e | 3325 | SV* tmpsv; |
1554e226 | 3326 | if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) && |
9e3013b1 | 3327 | (!SvROK(tmpsv) || (SvRV(tmpsv) != SvRV(sv)))) |
8a31060d | 3328 | return (bool)SvTRUE(tmpsv); |
a0d0e21e LW |
3329 | return SvRV(sv) != 0; |
3330 | } | |
463ee0b2 | 3331 | if (SvPOKp(sv)) { |
11343788 MB |
3332 | register XPV* Xpvtmp; |
3333 | if ((Xpvtmp = (XPV*)SvANY(sv)) && | |
3334 | (*Xpvtmp->xpv_pv > '0' || | |
3335 | Xpvtmp->xpv_cur > 1 || | |
3336 | (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0'))) | |
463ee0b2 LW |
3337 | return 1; |
3338 | else | |
3339 | return 0; | |
3340 | } | |
3341 | else { | |
3342 | if (SvIOKp(sv)) | |
3343 | return SvIVX(sv) != 0; | |
3344 | else { | |
3345 | if (SvNOKp(sv)) | |
3346 | return SvNVX(sv) != 0.0; | |
3347 | else | |
3348 | return FALSE; | |
3349 | } | |
3350 | } | |
79072805 LW |
3351 | } |
3352 | ||
09540bc3 JH |
3353 | /* sv_utf8_upgrade() is now a macro using sv_utf8_upgrade_flags(); |
3354 | * this function provided for binary compatibility only | |
3355 | */ | |
3356 | ||
3357 | ||
3358 | STRLEN | |
3359 | Perl_sv_utf8_upgrade(pTHX_ register SV *sv) | |
3360 | { | |
3361 | return sv_utf8_upgrade_flags(sv, SV_GMAGIC); | |
3362 | } | |
3363 | ||
c461cf8f JH |
3364 | /* |
3365 | =for apidoc sv_utf8_upgrade | |
3366 | ||
3367 | Convert the PV of an SV to its UTF8-encoded form. | |
645c22ef | 3368 | Forces the SV to string form if it is not already. |
4411f3b6 NIS |
3369 | Always sets the SvUTF8 flag to avoid future validity checks even |
3370 | if all the bytes have hibit clear. | |
c461cf8f | 3371 | |
13a6c0e0 JH |
3372 | This is not as a general purpose byte encoding to Unicode interface: |
3373 | use the Encode extension for that. | |
3374 | ||
8d6d96c1 HS |
3375 | =for apidoc sv_utf8_upgrade_flags |
3376 | ||
3377 | Convert the PV of an SV to its UTF8-encoded form. | |
645c22ef | 3378 | Forces the SV to string form if it is not already. |
8d6d96c1 HS |
3379 | Always sets the SvUTF8 flag to avoid future validity checks even |
3380 | if all the bytes have hibit clear. If C<flags> has C<SV_GMAGIC> bit set, | |
3381 | will C<mg_get> on C<sv> if appropriate, else not. C<sv_utf8_upgrade> and | |
3382 | C<sv_utf8_upgrade_nomg> are implemented in terms of this function. | |
3383 | ||
13a6c0e0 JH |
3384 | This is not as a general purpose byte encoding to Unicode interface: |
3385 | use the Encode extension for that. | |
3386 | ||
8d6d96c1 HS |
3387 | =cut |
3388 | */ | |
3389 | ||
3390 | STRLEN | |
3391 | Perl_sv_utf8_upgrade_flags(pTHX_ register SV *sv, I32 flags) | |
3392 | { | |
db42d148 | 3393 | U8 *s, *t, *e; |
511c2ff0 | 3394 | int hibit = 0; |
560a288e | 3395 | |
4411f3b6 NIS |
3396 | if (!sv) |
3397 | return 0; | |
3398 | ||
e0e62c2a NIS |
3399 | if (!SvPOK(sv)) { |
3400 | STRLEN len = 0; | |
8d6d96c1 | 3401 | (void) sv_2pv_flags(sv,&len, flags); |
e0e62c2a NIS |
3402 | if (!SvPOK(sv)) |
3403 | return len; | |
3404 | } | |
4411f3b6 NIS |
3405 | |
3406 | if (SvUTF8(sv)) | |
3407 | return SvCUR(sv); | |
560a288e | 3408 | |
765f542d NC |
3409 | if (SvIsCOW(sv)) { |
3410 | sv_force_normal_flags(sv, 0); | |
db42d148 NIS |
3411 | } |
3412 | ||
88632417 | 3413 | if (PL_encoding && !(flags & SV_UTF8_NO_ENCODING)) |
799ef3cb | 3414 | sv_recode_to_utf8(sv, PL_encoding); |
9f4817db | 3415 | else { /* Assume Latin-1/EBCDIC */ |
0a378802 JH |
3416 | /* This function could be much more efficient if we |
3417 | * had a FLAG in SVs to signal if there are any hibit | |
3418 | * chars in the PV. Given that there isn't such a flag | |
3419 | * make the loop as fast as possible. */ | |
3420 | s = (U8 *) SvPVX(sv); | |
3421 | e = (U8 *) SvEND(sv); | |
3422 | t = s; | |
3423 | while (t < e) { | |
3424 | U8 ch = *t++; | |
3425 | if ((hibit = !NATIVE_IS_INVARIANT(ch))) | |
3426 | break; | |
3427 | } | |
3428 | if (hibit) { | |
3429 | STRLEN len; | |
ecdeb87c | 3430 | |
0a378802 JH |
3431 | len = SvCUR(sv) + 1; /* Plus the \0 */ |
3432 | SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len); | |
3433 | SvCUR(sv) = len - 1; | |
3434 | if (SvLEN(sv) != 0) | |
3435 | Safefree(s); /* No longer using what was there before. */ | |
3436 | SvLEN(sv) = len; /* No longer know the real size. */ | |
3437 | } | |
9f4817db JH |
3438 | /* Mark as UTF-8 even if no hibit - saves scanning loop */ |
3439 | SvUTF8_on(sv); | |
560a288e | 3440 | } |
4411f3b6 | 3441 | return SvCUR(sv); |
560a288e GS |
3442 | } |
3443 | ||
c461cf8f JH |
3444 | /* |
3445 | =for apidoc sv_utf8_downgrade | |
3446 | ||
3447 | Attempt to convert the PV of an SV from UTF8-encoded to byte encoding. | |
3448 | This may not be possible if the PV contains non-byte encoding characters; | |
3449 | if this is the case, either returns false or, if C<fail_ok> is not | |
3450 | true, croaks. | |
3451 | ||
13a6c0e0 JH |
3452 | This is not as a general purpose Unicode to byte encoding interface: |
3453 | use the Encode extension for that. | |
3454 | ||
c461cf8f JH |
3455 | =cut |
3456 | */ | |
3457 | ||
560a288e GS |
3458 | bool |
3459 | Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok) | |
3460 | { | |
3461 | if (SvPOK(sv) && SvUTF8(sv)) { | |
fa301091 | 3462 | if (SvCUR(sv)) { |
03cfe0ae | 3463 | U8 *s; |
652088fc | 3464 | STRLEN len; |
fa301091 | 3465 | |
765f542d NC |
3466 | if (SvIsCOW(sv)) { |
3467 | sv_force_normal_flags(sv, 0); | |
3468 | } | |
03cfe0ae NIS |
3469 | s = (U8 *) SvPV(sv, len); |
3470 | if (!utf8_to_bytes(s, &len)) { | |
fa301091 JH |
3471 | if (fail_ok) |
3472 | return FALSE; | |
3473 | else { | |
3474 | if (PL_op) | |
3475 | Perl_croak(aTHX_ "Wide character in %s", | |
53e06cf0 | 3476 | OP_DESC(PL_op)); |
fa301091 JH |
3477 | else |
3478 | Perl_croak(aTHX_ "Wide character"); | |
3479 | } | |
4b3603a4 | 3480 | } |
fa301091 | 3481 | SvCUR(sv) = len; |
67e989fb | 3482 | } |
560a288e | 3483 | } |
ffebcc3e | 3484 | SvUTF8_off(sv); |
560a288e GS |
3485 | return TRUE; |
3486 | } | |
3487 | ||
c461cf8f JH |
3488 | /* |
3489 | =for apidoc sv_utf8_encode | |
3490 | ||
3491 | Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8> | |
4411f3b6 NIS |
3492 | flag so that it looks like octets again. Used as a building block |
3493 | for encode_utf8 in Encode.xs | |
c461cf8f JH |
3494 | |
3495 | =cut | |
3496 | */ | |
3497 | ||
560a288e GS |
3498 | void |
3499 | Perl_sv_utf8_encode(pTHX_ register SV *sv) | |
3500 | { | |
4411f3b6 | 3501 | (void) sv_utf8_upgrade(sv); |
560a288e GS |
3502 | SvUTF8_off(sv); |
3503 | } | |
3504 | ||
4411f3b6 NIS |
3505 | /* |
3506 | =for apidoc sv_utf8_decode | |
3507 | ||
3508 | Convert the octets in the PV from UTF-8 to chars. Scan for validity and then | |
645c22ef | 3509 | turn off SvUTF8 if needed so that we see characters. Used as a building block |
4411f3b6 NIS |
3510 | for decode_utf8 in Encode.xs |
3511 | ||
3512 | =cut | |
3513 | */ | |
3514 | ||
560a288e GS |
3515 | bool |
3516 | Perl_sv_utf8_decode(pTHX_ register SV *sv) | |
3517 | { | |
3518 | if (SvPOK(sv)) { | |
63cd0674 NIS |
3519 | U8 *c; |
3520 | U8 *e; | |
9cbac4c7 | 3521 | |
645c22ef DM |
3522 | /* The octets may have got themselves encoded - get them back as |
3523 | * bytes | |
3524 | */ | |
3525 | if (!sv_utf8_downgrade(sv, TRUE)) | |
560a288e GS |
3526 | return FALSE; |
3527 | ||
3528 | /* it is actually just a matter of turning the utf8 flag on, but | |
3529 | * we want to make sure everything inside is valid utf8 first. | |
3530 | */ | |
63cd0674 NIS |
3531 | c = (U8 *) SvPVX(sv); |
3532 | if (!is_utf8_string(c, SvCUR(sv)+1)) | |
67e989fb | 3533 | return FALSE; |
63cd0674 | 3534 | e = (U8 *) SvEND(sv); |
511c2ff0 | 3535 | while (c < e) { |
c4d5f83a NIS |
3536 | U8 ch = *c++; |
3537 | if (!UTF8_IS_INVARIANT(ch)) { | |
67e989fb JH |
3538 | SvUTF8_on(sv); |
3539 | break; | |
3540 | } | |
560a288e | 3541 | } |
560a288e GS |
3542 | } |
3543 | return TRUE; | |
3544 | } | |
3545 | ||
09540bc3 JH |
3546 | /* sv_setsv() is now a macro using Perl_sv_setsv_flags(); |
3547 | * this function provided for binary compatibility only | |
3548 | */ | |
3549 | ||
3550 | void | |
3551 | Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr) | |
3552 | { | |
3553 | sv_setsv_flags(dstr, sstr, SV_GMAGIC); | |
3554 | } | |
3555 | ||
954c1994 GS |
3556 | /* |
3557 | =for apidoc sv_setsv | |
3558 | ||
645c22ef DM |
3559 | Copies the contents of the source SV C<ssv> into the destination SV |
3560 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
3561 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
3562 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
3563 | content of the destination. | |
3564 | ||
3565 | You probably want to use one of the assortment of wrappers, such as | |
3566 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
3567 | C<SvSetMagicSV_nosteal>. | |
3568 | ||
8d6d96c1 HS |
3569 | =for apidoc sv_setsv_flags |
3570 | ||
645c22ef DM |
3571 | Copies the contents of the source SV C<ssv> into the destination SV |
3572 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
3573 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
3574 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
3575 | content of the destination. | |
3576 | If the C<flags> parameter has the C<SV_GMAGIC> bit set, will C<mg_get> on | |
3577 | C<ssv> if appropriate, else not. C<sv_setsv> and C<sv_setsv_nomg> are | |
3578 | implemented in terms of this function. | |
3579 | ||
3580 | You probably want to use one of the assortment of wrappers, such as | |
3581 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
3582 | C<SvSetMagicSV_nosteal>. | |
3583 | ||
3584 | This is the primary function for copying scalars, and most other | |
3585 | copy-ish functions and macros use this underneath. | |
8d6d96c1 HS |
3586 | |
3587 | =cut | |
3588 | */ | |
3589 | ||
3590 | void | |
3591 | Perl_sv_setsv_flags(pTHX_ SV *dstr, register SV *sstr, I32 flags) | |
3592 | { | |
8990e307 LW |
3593 | register U32 sflags; |
3594 | register int dtype; | |
3595 | register int stype; | |
463ee0b2 | 3596 | |
79072805 LW |
3597 | if (sstr == dstr) |
3598 | return; | |
765f542d | 3599 | SV_CHECK_THINKFIRST_COW_DROP(dstr); |
79072805 | 3600 | if (!sstr) |
3280af22 | 3601 | sstr = &PL_sv_undef; |
8990e307 LW |
3602 | stype = SvTYPE(sstr); |
3603 | dtype = SvTYPE(dstr); | |
79072805 | 3604 | |
a0d0e21e | 3605 | SvAMAGIC_off(dstr); |
ece467f9 JP |
3606 | if ( SvVOK(dstr) ) |
3607 | { | |
3608 | /* need to nuke the magic */ | |
3609 | mg_free(dstr); | |
3610 | SvRMAGICAL_off(dstr); | |
3611 | } | |
9e7bc3e8 | 3612 | |
463ee0b2 | 3613 | /* There's a lot of redundancy below but we're going for speed here */ |
79072805 | 3614 | |
8990e307 | 3615 | switch (stype) { |
79072805 | 3616 | case SVt_NULL: |
aece5585 | 3617 | undef_sstr: |
20408e3c GS |
3618 | if (dtype != SVt_PVGV) { |
3619 | (void)SvOK_off(dstr); | |
3620 | return; | |
3621 | } | |
3622 | break; | |
463ee0b2 | 3623 | case SVt_IV: |
aece5585 GA |
3624 | if (SvIOK(sstr)) { |
3625 | switch (dtype) { | |
3626 | case SVt_NULL: | |
8990e307 | 3627 | sv_upgrade(dstr, SVt_IV); |
aece5585 GA |
3628 | break; |
3629 | case SVt_NV: | |
8990e307 | 3630 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 GA |
3631 | break; |
3632 | case SVt_RV: | |
3633 | case SVt_PV: | |
a0d0e21e | 3634 | sv_upgrade(dstr, SVt_PVIV); |
aece5585 GA |
3635 | break; |
3636 | } | |
3637 | (void)SvIOK_only(dstr); | |
3638 | SvIVX(dstr) = SvIVX(sstr); | |
25da4f38 IZ |
3639 | if (SvIsUV(sstr)) |
3640 | SvIsUV_on(dstr); | |
27c9684d AP |
3641 | if (SvTAINTED(sstr)) |
3642 | SvTAINT(dstr); | |
aece5585 | 3643 | return; |
8990e307 | 3644 | } |
aece5585 GA |
3645 | goto undef_sstr; |
3646 | ||
463ee0b2 | 3647 | case SVt_NV: |
aece5585 GA |
3648 | if (SvNOK(sstr)) { |
3649 | switch (dtype) { | |
3650 | case SVt_NULL: | |
3651 | case SVt_IV: | |
8990e307 | 3652 | sv_upgrade(dstr, SVt_NV); |
aece5585 GA |
3653 | break; |
3654 | case SVt_RV: | |
3655 | case SVt_PV: | |
3656 | case SVt_PVIV: | |
a0d0e21e | 3657 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 GA |
3658 | break; |
3659 | } | |
3660 | SvNVX(dstr) = SvNVX(sstr); | |
3661 | (void)SvNOK_only(dstr); | |
27c9684d AP |
3662 | if (SvTAINTED(sstr)) |
3663 | SvTAINT(dstr); | |
aece5585 | 3664 | return; |
8990e307 | 3665 | } |
aece5585 GA |
3666 | goto undef_sstr; |
3667 | ||
ed6116ce | 3668 | case SVt_RV: |
8990e307 | 3669 | if (dtype < SVt_RV) |
ed6116ce | 3670 | sv_upgrade(dstr, SVt_RV); |
c07a80fd | 3671 | else if (dtype == SVt_PVGV && |
3672 | SvTYPE(SvRV(sstr)) == SVt_PVGV) { | |
3673 | sstr = SvRV(sstr); | |
a5f75d66 | 3674 | if (sstr == dstr) { |
1d7c1841 GS |
3675 | if (GvIMPORTED(dstr) != GVf_IMPORTED |
3676 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
3677 | { | |
a5f75d66 | 3678 | GvIMPORTED_on(dstr); |
1d7c1841 | 3679 | } |
a5f75d66 AD |
3680 | GvMULTI_on(dstr); |
3681 | return; | |
3682 | } | |
c07a80fd | 3683 | goto glob_assign; |
3684 | } | |
ed6116ce | 3685 | break; |
fc36a67e | 3686 | case SVt_PVFM: |
d89fc664 NC |
3687 | #ifdef PERL_COPY_ON_WRITE |
3688 | if ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS) { | |
3689 | if (dtype < SVt_PVIV) | |
3690 | sv_upgrade(dstr, SVt_PVIV); | |
3691 | break; | |
3692 | } | |
3693 | /* Fall through */ | |
3694 | #endif | |
3695 | case SVt_PV: | |
8990e307 | 3696 | if (dtype < SVt_PV) |
463ee0b2 | 3697 | sv_upgrade(dstr, SVt_PV); |
463ee0b2 LW |
3698 | break; |
3699 | case SVt_PVIV: | |
8990e307 | 3700 | if (dtype < SVt_PVIV) |
463ee0b2 | 3701 | sv_upgrade(dstr, SVt_PVIV); |
463ee0b2 LW |
3702 | break; |
3703 | case SVt_PVNV: | |
8990e307 | 3704 | if (dtype < SVt_PVNV) |
463ee0b2 | 3705 | sv_upgrade(dstr, SVt_PVNV); |
463ee0b2 | 3706 | break; |
4633a7c4 LW |
3707 | case SVt_PVAV: |
3708 | case SVt_PVHV: | |
3709 | case SVt_PVCV: | |
4633a7c4 | 3710 | case SVt_PVIO: |
533c011a | 3711 | if (PL_op) |
cea2e8a9 | 3712 | Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0), |
53e06cf0 | 3713 | OP_NAME(PL_op)); |
4633a7c4 | 3714 | else |
cea2e8a9 | 3715 | Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0)); |
4633a7c4 LW |
3716 | break; |
3717 | ||
79072805 | 3718 | case SVt_PVGV: |
8990e307 | 3719 | if (dtype <= SVt_PVGV) { |
c07a80fd | 3720 | glob_assign: |
a5f75d66 | 3721 | if (dtype != SVt_PVGV) { |
a0d0e21e LW |
3722 | char *name = GvNAME(sstr); |
3723 | STRLEN len = GvNAMELEN(sstr); | |
463ee0b2 | 3724 | sv_upgrade(dstr, SVt_PVGV); |
14befaf4 | 3725 | sv_magic(dstr, dstr, PERL_MAGIC_glob, Nullch, 0); |
85aff577 | 3726 | GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr)); |
a0d0e21e LW |
3727 | GvNAME(dstr) = savepvn(name, len); |
3728 | GvNAMELEN(dstr) = len; | |
3729 | SvFAKE_on(dstr); /* can coerce to non-glob */ | |
3730 | } | |
7bac28a0 | 3731 | /* ahem, death to those who redefine active sort subs */ |
3280af22 NIS |
3732 | else if (PL_curstackinfo->si_type == PERLSI_SORT |
3733 | && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr))) | |
cea2e8a9 | 3734 | Perl_croak(aTHX_ "Can't redefine active sort subroutine %s", |
7bac28a0 | 3735 | GvNAME(dstr)); |
5bd07a3d | 3736 | |
7fb37951 AMS |
3737 | #ifdef GV_UNIQUE_CHECK |
3738 | if (GvUNIQUE((GV*)dstr)) { | |
5bd07a3d DM |
3739 | Perl_croak(aTHX_ PL_no_modify); |
3740 | } | |
3741 | #endif | |
3742 | ||
a0d0e21e | 3743 | (void)SvOK_off(dstr); |
a5f75d66 | 3744 | GvINTRO_off(dstr); /* one-shot flag */ |
1edc1566 | 3745 | gp_free((GV*)dstr); |
79072805 | 3746 | GvGP(dstr) = gp_ref(GvGP(sstr)); |
27c9684d AP |
3747 | if (SvTAINTED(sstr)) |
3748 | SvTAINT(dstr); | |
1d7c1841 GS |
3749 | if (GvIMPORTED(dstr) != GVf_IMPORTED |
3750 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
3751 | { | |
a5f75d66 | 3752 | GvIMPORTED_on(dstr); |
1d7c1841 | 3753 | } |
a5f75d66 | 3754 | GvMULTI_on(dstr); |
79072805 LW |
3755 | return; |
3756 | } | |
3757 | /* FALL THROUGH */ | |
3758 | ||
3759 | default: | |
8d6d96c1 | 3760 | if (SvGMAGICAL(sstr) && (flags & SV_GMAGIC)) { |
973f89ab | 3761 | mg_get(sstr); |
eb160463 | 3762 | if ((int)SvTYPE(sstr) != stype) { |
973f89ab CS |
3763 | stype = SvTYPE(sstr); |
3764 | if (stype == SVt_PVGV && dtype <= SVt_PVGV) | |
3765 | goto glob_assign; | |
3766 | } | |
3767 | } | |
ded42b9f | 3768 | if (stype == SVt_PVLV) |
6fc92669 | 3769 | (void)SvUPGRADE(dstr, SVt_PVNV); |
ded42b9f | 3770 | else |
eb160463 | 3771 | (void)SvUPGRADE(dstr, (U32)stype); |
79072805 LW |
3772 | } |
3773 | ||
8990e307 LW |
3774 | sflags = SvFLAGS(sstr); |
3775 | ||
3776 | if (sflags & SVf_ROK) { | |
3777 | if (dtype >= SVt_PV) { | |
3778 | if (dtype == SVt_PVGV) { | |
3779 | SV *sref = SvREFCNT_inc(SvRV(sstr)); | |
3780 | SV *dref = 0; | |
a5f75d66 | 3781 | int intro = GvINTRO(dstr); |
a0d0e21e | 3782 | |
7fb37951 AMS |
3783 | #ifdef GV_UNIQUE_CHECK |
3784 | if (GvUNIQUE((GV*)dstr)) { | |
5bd07a3d DM |
3785 | Perl_croak(aTHX_ PL_no_modify); |
3786 | } | |
3787 | #endif | |
3788 | ||
a0d0e21e | 3789 | if (intro) { |
a5f75d66 | 3790 | GvINTRO_off(dstr); /* one-shot flag */ |
1d7c1841 | 3791 | GvLINE(dstr) = CopLINE(PL_curcop); |
1edc1566 | 3792 | GvEGV(dstr) = (GV*)dstr; |
a0d0e21e | 3793 | } |
a5f75d66 | 3794 | GvMULTI_on(dstr); |
8990e307 LW |
3795 | switch (SvTYPE(sref)) { |
3796 | case SVt_PVAV: | |
a0d0e21e | 3797 | if (intro) |
890ed176 | 3798 | SAVEGENERICSV(GvAV(dstr)); |
a0d0e21e LW |
3799 | else |
3800 | dref = (SV*)GvAV(dstr); | |
8990e307 | 3801 | GvAV(dstr) = (AV*)sref; |
39bac7f7 | 3802 | if (!GvIMPORTED_AV(dstr) |
1d7c1841 GS |
3803 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
3804 | { | |
a5f75d66 | 3805 | GvIMPORTED_AV_on(dstr); |
1d7c1841 | 3806 | } |
8990e307 LW |
3807 | break; |
3808 | case SVt_PVHV: | |
a0d0e21e | 3809 | if (intro) |
890ed176 | 3810 | SAVEGENERICSV(GvHV(dstr)); |
a0d0e21e LW |
3811 | else |
3812 | dref = (SV*)GvHV(dstr); | |
8990e307 | 3813 | GvHV(dstr) = (HV*)sref; |
39bac7f7 | 3814 | if (!GvIMPORTED_HV(dstr) |
1d7c1841 GS |
3815 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
3816 | { | |
a5f75d66 | 3817 | GvIMPORTED_HV_on(dstr); |
1d7c1841 | 3818 | } |
8990e307 LW |
3819 | break; |
3820 | case SVt_PVCV: | |
8ebc5c01 | 3821 | if (intro) { |
3822 | if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) { | |
3823 | SvREFCNT_dec(GvCV(dstr)); | |
3824 | GvCV(dstr) = Nullcv; | |
68dc0745 | 3825 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
3280af22 | 3826 | PL_sub_generation++; |
8ebc5c01 | 3827 | } |
890ed176 | 3828 | SAVEGENERICSV(GvCV(dstr)); |
8ebc5c01 | 3829 | } |
68dc0745 | 3830 | else |
3831 | dref = (SV*)GvCV(dstr); | |
3832 | if (GvCV(dstr) != (CV*)sref) { | |
748a9306 | 3833 | CV* cv = GvCV(dstr); |
4633a7c4 | 3834 | if (cv) { |
68dc0745 | 3835 | if (!GvCVGEN((GV*)dstr) && |
3836 | (CvROOT(cv) || CvXSUB(cv))) | |
3837 | { | |
7bac28a0 | 3838 | /* ahem, death to those who redefine |
3839 | * active sort subs */ | |
3280af22 NIS |
3840 | if (PL_curstackinfo->si_type == PERLSI_SORT && |
3841 | PL_sortcop == CvSTART(cv)) | |
1c846c1f | 3842 | Perl_croak(aTHX_ |
7bac28a0 | 3843 | "Can't redefine active sort subroutine %s", |
3844 | GvENAME((GV*)dstr)); | |
beab0874 JT |
3845 | /* Redefining a sub - warning is mandatory if |
3846 | it was a const and its value changed. */ | |
3847 | if (ckWARN(WARN_REDEFINE) | |
3848 | || (CvCONST(cv) | |
3849 | && (!CvCONST((CV*)sref) | |
3850 | || sv_cmp(cv_const_sv(cv), | |
3851 | cv_const_sv((CV*)sref))))) | |
3852 | { | |
9014280d | 3853 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
beab0874 | 3854 | CvCONST(cv) |
910764e6 RGS |
3855 | ? "Constant subroutine %s::%s redefined" |
3856 | : "Subroutine %s::%s redefined", | |
3857 | HvNAME(GvSTASH((GV*)dstr)), | |
beab0874 JT |
3858 | GvENAME((GV*)dstr)); |
3859 | } | |
9607fc9c | 3860 | } |
fb24441d RGS |
3861 | if (!intro) |
3862 | cv_ckproto(cv, (GV*)dstr, | |
3863 | SvPOK(sref) ? SvPVX(sref) : Nullch); | |
4633a7c4 | 3864 | } |
a5f75d66 | 3865 | GvCV(dstr) = (CV*)sref; |
7a4c00b4 | 3866 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
a5f75d66 | 3867 | GvASSUMECV_on(dstr); |
3280af22 | 3868 | PL_sub_generation++; |
a5f75d66 | 3869 | } |
39bac7f7 | 3870 | if (!GvIMPORTED_CV(dstr) |
1d7c1841 GS |
3871 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
3872 | { | |
a5f75d66 | 3873 | GvIMPORTED_CV_on(dstr); |
1d7c1841 | 3874 | } |
8990e307 | 3875 | break; |
91bba347 LW |
3876 | case SVt_PVIO: |
3877 | if (intro) | |
890ed176 | 3878 | SAVEGENERICSV(GvIOp(dstr)); |
91bba347 LW |
3879 | else |
3880 | dref = (SV*)GvIOp(dstr); | |
3881 | GvIOp(dstr) = (IO*)sref; | |
3882 | break; | |
f4d13ee9 JH |
3883 | case SVt_PVFM: |
3884 | if (intro) | |
890ed176 | 3885 | SAVEGENERICSV(GvFORM(dstr)); |
f4d13ee9 JH |
3886 | else |
3887 | dref = (SV*)GvFORM(dstr); | |
3888 | GvFORM(dstr) = (CV*)sref; | |
3889 | break; | |
8990e307 | 3890 | default: |
a0d0e21e | 3891 | if (intro) |
890ed176 | 3892 | SAVEGENERICSV(GvSV(dstr)); |
a0d0e21e LW |
3893 | else |
3894 | dref = (SV*)GvSV(dstr); | |
8990e307 | 3895 | GvSV(dstr) = sref; |
39bac7f7 | 3896 | if (!GvIMPORTED_SV(dstr) |
1d7c1841 GS |
3897 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
3898 | { | |
a5f75d66 | 3899 | GvIMPORTED_SV_on(dstr); |
1d7c1841 | 3900 | } |
8990e307 LW |
3901 | break; |
3902 | } | |
3903 | if (dref) | |
3904 | SvREFCNT_dec(dref); | |
27c9684d AP |
3905 | if (SvTAINTED(sstr)) |
3906 | SvTAINT(dstr); | |
8990e307 LW |
3907 | return; |
3908 | } | |
a0d0e21e | 3909 | if (SvPVX(dstr)) { |
760ac839 | 3910 | (void)SvOOK_off(dstr); /* backoff */ |
50483b2c JD |
3911 | if (SvLEN(dstr)) |
3912 | Safefree(SvPVX(dstr)); | |
a0d0e21e LW |
3913 | SvLEN(dstr)=SvCUR(dstr)=0; |
3914 | } | |
8990e307 | 3915 | } |
a0d0e21e | 3916 | (void)SvOK_off(dstr); |
8990e307 | 3917 | SvRV(dstr) = SvREFCNT_inc(SvRV(sstr)); |
ed6116ce | 3918 | SvROK_on(dstr); |
8990e307 | 3919 | if (sflags & SVp_NOK) { |
3332b3c1 JH |
3920 | SvNOKp_on(dstr); |
3921 | /* Only set the public OK flag if the source has public OK. */ | |
3922 | if (sflags & SVf_NOK) | |
3923 | SvFLAGS(dstr) |= SVf_NOK; | |
ed6116ce LW |
3924 | SvNVX(dstr) = SvNVX(sstr); |
3925 | } | |
8990e307 | 3926 | if (sflags & SVp_IOK) { |
3332b3c1 JH |
3927 | (void)SvIOKp_on(dstr); |
3928 | if (sflags & SVf_IOK) | |
3929 | SvFLAGS(dstr) |= SVf_IOK; | |
2b1c7e3e | 3930 | if (sflags & SVf_IVisUV) |
25da4f38 | 3931 | SvIsUV_on(dstr); |
3332b3c1 | 3932 | SvIVX(dstr) = SvIVX(sstr); |
ed6116ce | 3933 | } |
a0d0e21e LW |
3934 | if (SvAMAGIC(sstr)) { |
3935 | SvAMAGIC_on(dstr); | |
3936 | } | |
ed6116ce | 3937 | } |
8990e307 | 3938 | else if (sflags & SVp_POK) { |
765f542d | 3939 | bool isSwipe = 0; |
79072805 LW |
3940 | |
3941 | /* | |
3942 | * Check to see if we can just swipe the string. If so, it's a | |
3943 | * possible small lose on short strings, but a big win on long ones. | |
463ee0b2 LW |
3944 | * It might even be a win on short strings if SvPVX(dstr) |
3945 | * has to be allocated and SvPVX(sstr) has to be freed. | |
79072805 LW |
3946 | */ |
3947 | ||
765f542d NC |
3948 | if ( |
3949 | #ifdef PERL_COPY_ON_WRITE | |
3950 | (sflags & (SVf_FAKE | SVf_READONLY)) != (SVf_FAKE | SVf_READONLY) | |
3951 | && | |
3952 | #endif | |
3953 | !(isSwipe = | |
3954 | (sflags & SVs_TEMP) && /* slated for free anyway? */ | |
3955 | !(sflags & SVf_OOK) && /* and not involved in OOK hack? */ | |
3956 | SvREFCNT(sstr) == 1 && /* and no other references to it? */ | |
3957 | SvLEN(sstr) && /* and really is a string */ | |
645c22ef | 3958 | /* and won't be needed again, potentially */ |
765f542d NC |
3959 | !(PL_op && PL_op->op_type == OP_AASSIGN)) |
3960 | #ifdef PERL_COPY_ON_WRITE | |
3961 | && !((sflags & CAN_COW_MASK) == CAN_COW_FLAGS | |
3962 | && SvTYPE(sstr) >= SVt_PVIV) | |
3963 | #endif | |
3964 | ) { | |
3965 | /* Failed the swipe test, and it's not a shared hash key either. | |
3966 | Have to copy the string. */ | |
3967 | STRLEN len = SvCUR(sstr); | |
3968 | SvGROW(dstr, len + 1); /* inlined from sv_setpvn */ | |
3969 | Move(SvPVX(sstr),SvPVX(dstr),len,char); | |
3970 | SvCUR_set(dstr, len); | |
3971 | *SvEND(dstr) = '\0'; | |
3972 | (void)SvPOK_only(dstr); | |
3973 | } else { | |
3974 | /* If PERL_COPY_ON_WRITE is not defined, then isSwipe will always | |
3975 | be true in here. */ | |
3976 | #ifdef PERL_COPY_ON_WRITE | |
3977 | /* Either it's a shared hash key, or it's suitable for | |
3978 | copy-on-write or we can swipe the string. */ | |
46187eeb | 3979 | if (DEBUG_C_TEST) { |
ed252734 | 3980 | PerlIO_printf(Perl_debug_log, "Copy on write: sstr --> dstr\n"); |
e419cbc5 NC |
3981 | sv_dump(sstr); |
3982 | sv_dump(dstr); | |
46187eeb | 3983 | } |
765f542d NC |
3984 | if (!isSwipe) { |
3985 | /* I believe I should acquire a global SV mutex if | |
3986 | it's a COW sv (not a shared hash key) to stop | |
3987 | it going un copy-on-write. | |
3988 | If the source SV has gone un copy on write between up there | |
3989 | and down here, then (assert() that) it is of the correct | |
3990 | form to make it copy on write again */ | |
3991 | if ((sflags & (SVf_FAKE | SVf_READONLY)) | |
3992 | != (SVf_FAKE | SVf_READONLY)) { | |
3993 | SvREADONLY_on(sstr); | |
3994 | SvFAKE_on(sstr); | |
3995 | /* Make the source SV into a loop of 1. | |
3996 | (about to become 2) */ | |
a29f6d03 | 3997 | SV_COW_NEXT_SV_SET(sstr, sstr); |
765f542d NC |
3998 | } |
3999 | } | |
4000 | #endif | |
4001 | /* Initial code is common. */ | |
adbc6bb1 | 4002 | if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */ |
a5f75d66 AD |
4003 | if (SvOOK(dstr)) { |
4004 | SvFLAGS(dstr) &= ~SVf_OOK; | |
4005 | Safefree(SvPVX(dstr) - SvIVX(dstr)); | |
4006 | } | |
50483b2c | 4007 | else if (SvLEN(dstr)) |
a5f75d66 | 4008 | Safefree(SvPVX(dstr)); |
79072805 | 4009 | } |
a5f75d66 | 4010 | (void)SvPOK_only(dstr); |
765f542d NC |
4011 | |
4012 | #ifdef PERL_COPY_ON_WRITE | |
4013 | if (!isSwipe) { | |
4014 | /* making another shared SV. */ | |
4015 | STRLEN cur = SvCUR(sstr); | |
4016 | STRLEN len = SvLEN(sstr); | |
d89fc664 | 4017 | assert (SvTYPE(dstr) >= SVt_PVIV); |
765f542d NC |
4018 | if (len) { |
4019 | /* SvIsCOW_normal */ | |
4020 | /* splice us in between source and next-after-source. */ | |
a29f6d03 NC |
4021 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); |
4022 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
765f542d NC |
4023 | SvPV_set(dstr, SvPVX(sstr)); |
4024 | } else { | |
4025 | /* SvIsCOW_shared_hash */ | |
4026 | UV hash = SvUVX(sstr); | |
46187eeb NC |
4027 | DEBUG_C(PerlIO_printf(Perl_debug_log, |
4028 | "Copy on write: Sharing hash\n")); | |
765f542d NC |
4029 | SvPV_set(dstr, |
4030 | sharepvn(SvPVX(sstr), | |
4031 | (sflags & SVf_UTF8?-cur:cur), hash)); | |
4032 | SvUVX(dstr) = hash; | |
4033 | } | |
4034 | SvLEN(dstr) = len; | |
4035 | SvCUR(dstr) = cur; | |
4036 | SvREADONLY_on(dstr); | |
4037 | SvFAKE_on(dstr); | |
4038 | /* Relesase a global SV mutex. */ | |
4039 | } | |
4040 | else | |
4041 | #endif | |
4042 | { /* Passes the swipe test. */ | |
4043 | SvPV_set(dstr, SvPVX(sstr)); | |
4044 | SvLEN_set(dstr, SvLEN(sstr)); | |
4045 | SvCUR_set(dstr, SvCUR(sstr)); | |
4046 | ||
4047 | SvTEMP_off(dstr); | |
4048 | (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */ | |
4049 | SvPV_set(sstr, Nullch); | |
4050 | SvLEN_set(sstr, 0); | |
4051 | SvCUR_set(sstr, 0); | |
4052 | SvTEMP_off(sstr); | |
4053 | } | |
4054 | } | |
9aa983d2 | 4055 | if (sflags & SVf_UTF8) |
a7cb1f99 | 4056 | SvUTF8_on(dstr); |
79072805 | 4057 | /*SUPPRESS 560*/ |
8990e307 | 4058 | if (sflags & SVp_NOK) { |
3332b3c1 JH |
4059 | SvNOKp_on(dstr); |
4060 | if (sflags & SVf_NOK) | |
4061 | SvFLAGS(dstr) |= SVf_NOK; | |
463ee0b2 | 4062 | SvNVX(dstr) = SvNVX(sstr); |
79072805 | 4063 | } |
8990e307 | 4064 | if (sflags & SVp_IOK) { |
3332b3c1 JH |
4065 | (void)SvIOKp_on(dstr); |
4066 | if (sflags & SVf_IOK) | |
4067 | SvFLAGS(dstr) |= SVf_IOK; | |
2b1c7e3e | 4068 | if (sflags & SVf_IVisUV) |
25da4f38 | 4069 | SvIsUV_on(dstr); |
463ee0b2 | 4070 | SvIVX(dstr) = SvIVX(sstr); |
79072805 | 4071 | } |
92f0c265 | 4072 | if (SvVOK(sstr)) { |
ece467f9 JP |
4073 | MAGIC *smg = mg_find(sstr,PERL_MAGIC_vstring); |
4074 | sv_magic(dstr, NULL, PERL_MAGIC_vstring, | |
4075 | smg->mg_ptr, smg->mg_len); | |
439cb1c4 | 4076 | SvRMAGICAL_on(dstr); |
92f0c265 | 4077 | } |
79072805 | 4078 | } |
8990e307 | 4079 | else if (sflags & SVp_IOK) { |
3332b3c1 JH |
4080 | if (sflags & SVf_IOK) |
4081 | (void)SvIOK_only(dstr); | |
4082 | else { | |
9cbac4c7 DM |
4083 | (void)SvOK_off(dstr); |
4084 | (void)SvIOKp_on(dstr); | |
3332b3c1 JH |
4085 | } |
4086 | /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */ | |
2b1c7e3e | 4087 | if (sflags & SVf_IVisUV) |
25da4f38 | 4088 | SvIsUV_on(dstr); |
3332b3c1 JH |
4089 | SvIVX(dstr) = SvIVX(sstr); |
4090 | if (sflags & SVp_NOK) { | |
4091 | if (sflags & SVf_NOK) | |
4092 | (void)SvNOK_on(dstr); | |
4093 | else | |
4094 | (void)SvNOKp_on(dstr); | |
4095 | SvNVX(dstr) = SvNVX(sstr); | |
4096 | } | |
4097 | } | |
4098 | else if (sflags & SVp_NOK) { | |
4099 | if (sflags & SVf_NOK) | |
4100 | (void)SvNOK_only(dstr); | |
4101 | else { | |
9cbac4c7 | 4102 | (void)SvOK_off(dstr); |
3332b3c1 JH |
4103 | SvNOKp_on(dstr); |
4104 | } | |
4105 | SvNVX(dstr) = SvNVX(sstr); | |
79072805 LW |
4106 | } |
4107 | else { | |
20408e3c | 4108 | if (dtype == SVt_PVGV) { |
e476b1b5 | 4109 | if (ckWARN(WARN_MISC)) |
9014280d | 4110 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Undefined value assigned to typeglob"); |
20408e3c GS |
4111 | } |
4112 | else | |
4113 | (void)SvOK_off(dstr); | |
a0d0e21e | 4114 | } |
27c9684d AP |
4115 | if (SvTAINTED(sstr)) |
4116 | SvTAINT(dstr); | |
79072805 LW |
4117 | } |
4118 | ||
954c1994 GS |
4119 | /* |
4120 | =for apidoc sv_setsv_mg | |
4121 | ||
4122 | Like C<sv_setsv>, but also handles 'set' magic. | |
4123 | ||
4124 | =cut | |
4125 | */ | |
4126 | ||
79072805 | 4127 | void |
864dbfa3 | 4128 | Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr) |
ef50df4b GS |
4129 | { |
4130 | sv_setsv(dstr,sstr); | |
4131 | SvSETMAGIC(dstr); | |
4132 | } | |
4133 | ||
ed252734 NC |
4134 | #ifdef PERL_COPY_ON_WRITE |
4135 | SV * | |
4136 | Perl_sv_setsv_cow(pTHX_ SV *dstr, SV *sstr) | |
4137 | { | |
4138 | STRLEN cur = SvCUR(sstr); | |
4139 | STRLEN len = SvLEN(sstr); | |
4140 | register char *new_pv; | |
4141 | ||
4142 | if (DEBUG_C_TEST) { | |
4143 | PerlIO_printf(Perl_debug_log, "Fast copy on write: %p -> %p\n", | |
4144 | sstr, dstr); | |
4145 | sv_dump(sstr); | |
4146 | if (dstr) | |
4147 | sv_dump(dstr); | |
4148 | } | |
4149 | ||
4150 | if (dstr) { | |
4151 | if (SvTHINKFIRST(dstr)) | |
4152 | sv_force_normal_flags(dstr, SV_COW_DROP_PV); | |
4153 | else if (SvPVX(dstr)) | |
4154 | Safefree(SvPVX(dstr)); | |
4155 | } | |
4156 | else | |
4157 | new_SV(dstr); | |
4158 | SvUPGRADE (dstr, SVt_PVIV); | |
4159 | ||
4160 | assert (SvPOK(sstr)); | |
4161 | assert (SvPOKp(sstr)); | |
4162 | assert (!SvIOK(sstr)); | |
4163 | assert (!SvIOKp(sstr)); | |
4164 | assert (!SvNOK(sstr)); | |
4165 | assert (!SvNOKp(sstr)); | |
4166 | ||
4167 | if (SvIsCOW(sstr)) { | |
4168 | ||
4169 | if (SvLEN(sstr) == 0) { | |
4170 | /* source is a COW shared hash key. */ | |
4171 | UV hash = SvUVX(sstr); | |
4172 | DEBUG_C(PerlIO_printf(Perl_debug_log, | |
4173 | "Fast copy on write: Sharing hash\n")); | |
4174 | SvUVX(dstr) = hash; | |
4175 | new_pv = sharepvn(SvPVX(sstr), (SvUTF8(sstr)?-cur:cur), hash); | |
4176 | goto common_exit; | |
4177 | } | |
4178 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); | |
4179 | } else { | |
4180 | assert ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS); | |
4181 | SvUPGRADE (sstr, SVt_PVIV); | |
4182 | SvREADONLY_on(sstr); | |
4183 | SvFAKE_on(sstr); | |
4184 | DEBUG_C(PerlIO_printf(Perl_debug_log, | |
4185 | "Fast copy on write: Converting sstr to COW\n")); | |
4186 | SV_COW_NEXT_SV_SET(dstr, sstr); | |
4187 | } | |
4188 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
4189 | new_pv = SvPVX(sstr); | |
4190 | ||
4191 | common_exit: | |
4192 | SvPV_set(dstr, new_pv); | |
4193 | SvFLAGS(dstr) = (SVt_PVIV|SVf_POK|SVp_POK|SVf_FAKE|SVf_READONLY); | |
4194 | if (SvUTF8(sstr)) | |
4195 | SvUTF8_on(dstr); | |
4196 | SvLEN(dstr) = len; | |
4197 | SvCUR(dstr) = cur; | |
4198 | if (DEBUG_C_TEST) { | |
4199 | sv_dump(dstr); | |
4200 | } | |
4201 | return dstr; | |
4202 | } | |
4203 | #endif | |
4204 | ||
954c1994 GS |
4205 | /* |
4206 | =for apidoc sv_setpvn | |
4207 | ||
4208 | Copies a string into an SV. The C<len> parameter indicates the number of | |
4209 | bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>. | |
4210 | ||
4211 | =cut | |
4212 | */ | |
4213 | ||
ef50df4b | 4214 | void |
864dbfa3 | 4215 | Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
79072805 | 4216 | { |
c6f8c383 | 4217 | register char *dptr; |
22c522df | 4218 | |
765f542d | 4219 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 4220 | if (!ptr) { |
a0d0e21e | 4221 | (void)SvOK_off(sv); |
463ee0b2 LW |
4222 | return; |
4223 | } | |
22c522df JH |
4224 | else { |
4225 | /* len is STRLEN which is unsigned, need to copy to signed */ | |
4226 | IV iv = len; | |
9c5ffd7c JH |
4227 | if (iv < 0) |
4228 | Perl_croak(aTHX_ "panic: sv_setpvn called with negative strlen"); | |
22c522df | 4229 | } |
6fc92669 | 4230 | (void)SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 4231 | |
79072805 | 4232 | SvGROW(sv, len + 1); |
c6f8c383 GA |
4233 | dptr = SvPVX(sv); |
4234 | Move(ptr,dptr,len,char); | |
4235 | dptr[len] = '\0'; | |
79072805 | 4236 | SvCUR_set(sv, len); |
1aa99e6b | 4237 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4238 | SvTAINT(sv); |
79072805 LW |
4239 | } |
4240 | ||
954c1994 GS |
4241 | /* |
4242 | =for apidoc sv_setpvn_mg | |
4243 | ||
4244 | Like C<sv_setpvn>, but also handles 'set' magic. | |
4245 | ||
4246 | =cut | |
4247 | */ | |
4248 | ||
79072805 | 4249 | void |
864dbfa3 | 4250 | Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
ef50df4b GS |
4251 | { |
4252 | sv_setpvn(sv,ptr,len); | |
4253 | SvSETMAGIC(sv); | |
4254 | } | |
4255 | ||
954c1994 GS |
4256 | /* |
4257 | =for apidoc sv_setpv | |
4258 | ||
4259 | Copies a string into an SV. The string must be null-terminated. Does not | |
4260 | handle 'set' magic. See C<sv_setpv_mg>. | |
4261 | ||
4262 | =cut | |
4263 | */ | |
4264 | ||
ef50df4b | 4265 | void |
864dbfa3 | 4266 | Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
4267 | { |
4268 | register STRLEN len; | |
4269 | ||
765f542d | 4270 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 4271 | if (!ptr) { |
a0d0e21e | 4272 | (void)SvOK_off(sv); |
463ee0b2 LW |
4273 | return; |
4274 | } | |
79072805 | 4275 | len = strlen(ptr); |
6fc92669 | 4276 | (void)SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 4277 | |
79072805 | 4278 | SvGROW(sv, len + 1); |
463ee0b2 | 4279 | Move(ptr,SvPVX(sv),len+1,char); |
79072805 | 4280 | SvCUR_set(sv, len); |
1aa99e6b | 4281 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 LW |
4282 | SvTAINT(sv); |
4283 | } | |
4284 | ||
954c1994 GS |
4285 | /* |
4286 | =for apidoc sv_setpv_mg | |
4287 | ||
4288 | Like C<sv_setpv>, but also handles 'set' magic. | |
4289 | ||
4290 | =cut | |
4291 | */ | |
4292 | ||
463ee0b2 | 4293 | void |
864dbfa3 | 4294 | Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b GS |
4295 | { |
4296 | sv_setpv(sv,ptr); | |
4297 | SvSETMAGIC(sv); | |
4298 | } | |
4299 | ||
954c1994 GS |
4300 | /* |
4301 | =for apidoc sv_usepvn | |
4302 | ||
4303 | Tells an SV to use C<ptr> to find its string value. Normally the string is | |
1c846c1f | 4304 | stored inside the SV but sv_usepvn allows the SV to use an outside string. |
954c1994 GS |
4305 | The C<ptr> should point to memory that was allocated by C<malloc>. The |
4306 | string length, C<len>, must be supplied. This function will realloc the | |
4307 | memory pointed to by C<ptr>, so that pointer should not be freed or used by | |
4308 | the programmer after giving it to sv_usepvn. Does not handle 'set' magic. | |
4309 | See C<sv_usepvn_mg>. | |
4310 | ||
4311 | =cut | |
4312 | */ | |
4313 | ||
ef50df4b | 4314 | void |
864dbfa3 | 4315 | Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len) |
463ee0b2 | 4316 | { |
765f542d | 4317 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
c6f8c383 | 4318 | (void)SvUPGRADE(sv, SVt_PV); |
463ee0b2 | 4319 | if (!ptr) { |
a0d0e21e | 4320 | (void)SvOK_off(sv); |
463ee0b2 LW |
4321 | return; |
4322 | } | |
a0ed51b3 | 4323 | (void)SvOOK_off(sv); |
50483b2c | 4324 | if (SvPVX(sv) && SvLEN(sv)) |
463ee0b2 LW |
4325 | Safefree(SvPVX(sv)); |
4326 | Renew(ptr, len+1, char); | |
4327 | SvPVX(sv) = ptr; | |
4328 | SvCUR_set(sv, len); | |
4329 | SvLEN_set(sv, len+1); | |
4330 | *SvEND(sv) = '\0'; | |
1aa99e6b | 4331 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4332 | SvTAINT(sv); |
79072805 LW |
4333 | } |
4334 | ||
954c1994 GS |
4335 | /* |
4336 | =for apidoc sv_usepvn_mg | |
4337 | ||
4338 | Like C<sv_usepvn>, but also handles 'set' magic. | |
4339 | ||
4340 | =cut | |
4341 | */ | |
4342 | ||
ef50df4b | 4343 | void |
864dbfa3 | 4344 | Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len) |
ef50df4b | 4345 | { |
51c1089b | 4346 | sv_usepvn(sv,ptr,len); |
ef50df4b GS |
4347 | SvSETMAGIC(sv); |
4348 | } | |
4349 | ||
765f542d NC |
4350 | #ifdef PERL_COPY_ON_WRITE |
4351 | /* Need to do this *after* making the SV normal, as we need the buffer | |
4352 | pointer to remain valid until after we've copied it. If we let go too early, | |
4353 | another thread could invalidate it by unsharing last of the same hash key | |
4354 | (which it can do by means other than releasing copy-on-write Svs) | |
4355 | or by changing the other copy-on-write SVs in the loop. */ | |
4356 | STATIC void | |
4357 | S_sv_release_COW(pTHX_ register SV *sv, char *pvx, STRLEN cur, STRLEN len, | |
4358 | U32 hash, SV *after) | |
4359 | { | |
4360 | if (len) { /* this SV was SvIsCOW_normal(sv) */ | |
4361 | /* we need to find the SV pointing to us. */ | |
4362 | SV *current = SV_COW_NEXT_SV(after); | |
4363 | ||
4364 | if (current == sv) { | |
4365 | /* The SV we point to points back to us (there were only two of us | |
4366 | in the loop.) | |
4367 | Hence other SV is no longer copy on write either. */ | |
4368 | SvFAKE_off(after); | |
4369 | SvREADONLY_off(after); | |
4370 | } else { | |
4371 | /* We need to follow the pointers around the loop. */ | |
4372 | SV *next; | |
4373 | while ((next = SV_COW_NEXT_SV(current)) != sv) { | |
4374 | assert (next); | |
4375 | current = next; | |
4376 | /* don't loop forever if the structure is bust, and we have | |
4377 | a pointer into a closed loop. */ | |
4378 | assert (current != after); | |
e419cbc5 | 4379 | assert (SvPVX(current) == pvx); |
765f542d NC |
4380 | } |
4381 | /* Make the SV before us point to the SV after us. */ | |
a29f6d03 | 4382 | SV_COW_NEXT_SV_SET(current, after); |
765f542d NC |
4383 | } |
4384 | } else { | |
4385 | unsharepvn(pvx, SvUTF8(sv) ? -(I32)cur : cur, hash); | |
4386 | } | |
4387 | } | |
4388 | ||
4389 | int | |
4390 | Perl_sv_release_IVX(pTHX_ register SV *sv) | |
4391 | { | |
4392 | if (SvIsCOW(sv)) | |
4393 | sv_force_normal_flags(sv, 0); | |
4394 | return SvOOK_off(sv); | |
4395 | } | |
4396 | #endif | |
645c22ef DM |
4397 | /* |
4398 | =for apidoc sv_force_normal_flags | |
4399 | ||
4400 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
4401 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
765f542d NC |
4402 | an xpvmg; if we're a copy-on-write scalar, this is the on-write time when |
4403 | we do the copy, and is also used locally. If C<SV_COW_DROP_PV> is set | |
4404 | then a copy-on-write scalar drops its PV buffer (if any) and becomes | |
4405 | SvPOK_off rather than making a copy. (Used where this scalar is about to be | |
d3050d9d | 4406 | set to some other value.) In addition, the C<flags> parameter gets passed to |
765f542d NC |
4407 | C<sv_unref_flags()> when unrefing. C<sv_force_normal> calls this function |
4408 | with flags set to 0. | |
645c22ef DM |
4409 | |
4410 | =cut | |
4411 | */ | |
4412 | ||
6fc92669 | 4413 | void |
840a7b70 | 4414 | Perl_sv_force_normal_flags(pTHX_ register SV *sv, U32 flags) |
0f15f207 | 4415 | { |
765f542d NC |
4416 | #ifdef PERL_COPY_ON_WRITE |
4417 | if (SvREADONLY(sv)) { | |
4418 | /* At this point I believe I should acquire a global SV mutex. */ | |
4419 | if (SvFAKE(sv)) { | |
4420 | char *pvx = SvPVX(sv); | |
4421 | STRLEN len = SvLEN(sv); | |
4422 | STRLEN cur = SvCUR(sv); | |
4423 | U32 hash = SvUVX(sv); | |
4424 | SV *next = SV_COW_NEXT_SV(sv); /* next COW sv in the loop. */ | |
46187eeb NC |
4425 | if (DEBUG_C_TEST) { |
4426 | PerlIO_printf(Perl_debug_log, | |
4427 | "Copy on write: Force normal %ld\n", | |
4428 | (long) flags); | |
e419cbc5 | 4429 | sv_dump(sv); |
46187eeb | 4430 | } |
765f542d NC |
4431 | SvFAKE_off(sv); |
4432 | SvREADONLY_off(sv); | |
4433 | /* This SV doesn't own the buffer, so need to New() a new one: */ | |
4434 | SvPVX(sv) = 0; | |
4435 | SvLEN(sv) = 0; | |
4436 | if (flags & SV_COW_DROP_PV) { | |
4437 | /* OK, so we don't need to copy our buffer. */ | |
4438 | SvPOK_off(sv); | |
4439 | } else { | |
4440 | SvGROW(sv, cur + 1); | |
4441 | Move(pvx,SvPVX(sv),cur,char); | |
4442 | SvCUR(sv) = cur; | |
4443 | *SvEND(sv) = '\0'; | |
4444 | } | |
e419cbc5 | 4445 | sv_release_COW(sv, pvx, cur, len, hash, next); |
46187eeb | 4446 | if (DEBUG_C_TEST) { |
e419cbc5 | 4447 | sv_dump(sv); |
46187eeb | 4448 | } |
765f542d NC |
4449 | } |
4450 | else if (PL_curcop != &PL_compiling) | |
4451 | Perl_croak(aTHX_ PL_no_modify); | |
4452 | /* At this point I believe that I can drop the global SV mutex. */ | |
4453 | } | |
4454 | #else | |
2213622d | 4455 | if (SvREADONLY(sv)) { |
1c846c1f NIS |
4456 | if (SvFAKE(sv)) { |
4457 | char *pvx = SvPVX(sv); | |
4458 | STRLEN len = SvCUR(sv); | |
4459 | U32 hash = SvUVX(sv); | |
10bcdfd6 NC |
4460 | SvFAKE_off(sv); |
4461 | SvREADONLY_off(sv); | |
1c846c1f NIS |
4462 | SvGROW(sv, len + 1); |
4463 | Move(pvx,SvPVX(sv),len,char); | |
4464 | *SvEND(sv) = '\0'; | |
25716404 | 4465 | unsharepvn(pvx, SvUTF8(sv) ? -(I32)len : len, hash); |
1c846c1f NIS |
4466 | } |
4467 | else if (PL_curcop != &PL_compiling) | |
cea2e8a9 | 4468 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 4469 | } |
765f542d | 4470 | #endif |
2213622d | 4471 | if (SvROK(sv)) |
840a7b70 | 4472 | sv_unref_flags(sv, flags); |
6fc92669 GS |
4473 | else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) |
4474 | sv_unglob(sv); | |
0f15f207 | 4475 | } |
1c846c1f | 4476 | |
645c22ef DM |
4477 | /* |
4478 | =for apidoc sv_force_normal | |
4479 | ||
4480 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
4481 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
4482 | an xpvmg. See also C<sv_force_normal_flags>. | |
4483 | ||
4484 | =cut | |
4485 | */ | |
4486 | ||
840a7b70 IZ |
4487 | void |
4488 | Perl_sv_force_normal(pTHX_ register SV *sv) | |
4489 | { | |
4490 | sv_force_normal_flags(sv, 0); | |
4491 | } | |
4492 | ||
954c1994 GS |
4493 | /* |
4494 | =for apidoc sv_chop | |
4495 | ||
1c846c1f | 4496 | Efficient removal of characters from the beginning of the string buffer. |
954c1994 GS |
4497 | SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside |
4498 | the string buffer. The C<ptr> becomes the first character of the adjusted | |
645c22ef | 4499 | string. Uses the "OOK hack". |
954c1994 GS |
4500 | |
4501 | =cut | |
4502 | */ | |
4503 | ||
79072805 | 4504 | void |
645c22ef | 4505 | Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) |
79072805 LW |
4506 | { |
4507 | register STRLEN delta; | |
4508 | ||
a0d0e21e | 4509 | if (!ptr || !SvPOKp(sv)) |
79072805 | 4510 | return; |
2213622d | 4511 | SV_CHECK_THINKFIRST(sv); |
79072805 LW |
4512 | if (SvTYPE(sv) < SVt_PVIV) |
4513 | sv_upgrade(sv,SVt_PVIV); | |
4514 | ||
4515 | if (!SvOOK(sv)) { | |
50483b2c JD |
4516 | if (!SvLEN(sv)) { /* make copy of shared string */ |
4517 | char *pvx = SvPVX(sv); | |
4518 | STRLEN len = SvCUR(sv); | |
4519 | SvGROW(sv, len + 1); | |
4520 | Move(pvx,SvPVX(sv),len,char); | |
4521 | *SvEND(sv) = '\0'; | |
4522 | } | |
463ee0b2 | 4523 | SvIVX(sv) = 0; |
a4bfb290 AB |
4524 | /* Same SvOOK_on but SvOOK_on does a SvIOK_off |
4525 | and we do that anyway inside the SvNIOK_off | |
4526 | */ | |
4527 | SvFLAGS(sv) |= SVf_OOK; | |
79072805 | 4528 | } |
a4bfb290 | 4529 | SvNIOK_off(sv); |
463ee0b2 | 4530 | delta = ptr - SvPVX(sv); |
79072805 LW |
4531 | SvLEN(sv) -= delta; |
4532 | SvCUR(sv) -= delta; | |
463ee0b2 LW |
4533 | SvPVX(sv) += delta; |
4534 | SvIVX(sv) += delta; | |
79072805 LW |
4535 | } |
4536 | ||
09540bc3 JH |
4537 | /* sv_catpvn() is now a macro using Perl_sv_catpvn_flags(); |
4538 | * this function provided for binary compatibility only | |
4539 | */ | |
4540 | ||
4541 | void | |
4542 | Perl_sv_catpvn(pTHX_ SV *dsv, const char* sstr, STRLEN slen) | |
4543 | { | |
4544 | sv_catpvn_flags(dsv, sstr, slen, SV_GMAGIC); | |
4545 | } | |
4546 | ||
954c1994 GS |
4547 | /* |
4548 | =for apidoc sv_catpvn | |
4549 | ||
4550 | Concatenates the string onto the end of the string which is in the SV. The | |
d5ce4a7c GA |
4551 | C<len> indicates number of bytes to copy. If the SV has the UTF8 |
4552 | status set, then the bytes appended should be valid UTF8. | |
4553 | Handles 'get' magic, but not 'set' magic. See C<sv_catpvn_mg>. | |
954c1994 | 4554 | |
8d6d96c1 HS |
4555 | =for apidoc sv_catpvn_flags |
4556 | ||
4557 | Concatenates the string onto the end of the string which is in the SV. The | |
4558 | C<len> indicates number of bytes to copy. If the SV has the UTF8 | |
4559 | status set, then the bytes appended should be valid UTF8. | |
4560 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<dsv> if | |
4561 | appropriate, else not. C<sv_catpvn> and C<sv_catpvn_nomg> are implemented | |
4562 | in terms of this function. | |
4563 | ||
4564 | =cut | |
4565 | */ | |
4566 | ||
4567 | void | |
4568 | Perl_sv_catpvn_flags(pTHX_ register SV *dsv, register const char *sstr, register STRLEN slen, I32 flags) | |
4569 | { | |
4570 | STRLEN dlen; | |
4571 | char *dstr; | |
4572 | ||
4573 | dstr = SvPV_force_flags(dsv, dlen, flags); | |
4574 | SvGROW(dsv, dlen + slen + 1); | |
4575 | if (sstr == dstr) | |
4576 | sstr = SvPVX(dsv); | |
4577 | Move(sstr, SvPVX(dsv) + dlen, slen, char); | |
4578 | SvCUR(dsv) += slen; | |
4579 | *SvEND(dsv) = '\0'; | |
4580 | (void)SvPOK_only_UTF8(dsv); /* validate pointer */ | |
4581 | SvTAINT(dsv); | |
79072805 LW |
4582 | } |
4583 | ||
954c1994 GS |
4584 | /* |
4585 | =for apidoc sv_catpvn_mg | |
4586 | ||
4587 | Like C<sv_catpvn>, but also handles 'set' magic. | |
4588 | ||
4589 | =cut | |
4590 | */ | |
4591 | ||
79072805 | 4592 | void |
864dbfa3 | 4593 | Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
ef50df4b GS |
4594 | { |
4595 | sv_catpvn(sv,ptr,len); | |
4596 | SvSETMAGIC(sv); | |
4597 | } | |
4598 | ||
09540bc3 JH |
4599 | /* sv_catsv() is now a macro using Perl_sv_catsv_flags(); |
4600 | * this function provided for binary compatibility only | |
4601 | */ | |
4602 | ||
4603 | void | |
4604 | Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr) | |
4605 | { | |
4606 | sv_catsv_flags(dstr, sstr, SV_GMAGIC); | |
4607 | } | |
4608 | ||
954c1994 GS |
4609 | /* |
4610 | =for apidoc sv_catsv | |
4611 | ||
13e8c8e3 JH |
4612 | Concatenates the string from SV C<ssv> onto the end of the string in |
4613 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. Handles 'get' magic, but | |
4614 | not 'set' magic. See C<sv_catsv_mg>. | |
954c1994 | 4615 | |
8d6d96c1 HS |
4616 | =for apidoc sv_catsv_flags |
4617 | ||
4618 | Concatenates the string from SV C<ssv> onto the end of the string in | |
4619 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. If C<flags> has C<SV_GMAGIC> | |
4620 | bit set, will C<mg_get> on the SVs if appropriate, else not. C<sv_catsv> | |
4621 | and C<sv_catsv_nomg> are implemented in terms of this function. | |
4622 | ||
4623 | =cut */ | |
4624 | ||
ef50df4b | 4625 | void |
8d6d96c1 | 4626 | Perl_sv_catsv_flags(pTHX_ SV *dsv, register SV *ssv, I32 flags) |
79072805 | 4627 | { |
13e8c8e3 JH |
4628 | char *spv; |
4629 | STRLEN slen; | |
46199a12 | 4630 | if (!ssv) |
79072805 | 4631 | return; |
46199a12 | 4632 | if ((spv = SvPV(ssv, slen))) { |
4fd84b44 AD |
4633 | /* sutf8 and dutf8 were type bool, but under USE_ITHREADS, |
4634 | gcc version 2.95.2 20000220 (Debian GNU/Linux) for | |
8cf8f3d1 NIS |
4635 | Linux xxx 2.2.17 on sparc64 with gcc -O2, we erroneously |
4636 | get dutf8 = 0x20000000, (i.e. SVf_UTF8) even though | |
4fd84b44 AD |
4637 | dsv->sv_flags doesn't have that bit set. |
4638 | Andy Dougherty 12 Oct 2001 | |
4639 | */ | |
4640 | I32 sutf8 = DO_UTF8(ssv); | |
4641 | I32 dutf8; | |
13e8c8e3 | 4642 | |
8d6d96c1 HS |
4643 | if (SvGMAGICAL(dsv) && (flags & SV_GMAGIC)) |
4644 | mg_get(dsv); | |
4645 | dutf8 = DO_UTF8(dsv); | |
4646 | ||
4647 | if (dutf8 != sutf8) { | |
13e8c8e3 | 4648 | if (dutf8) { |
46199a12 | 4649 | /* Not modifying source SV, so taking a temporary copy. */ |
8d6d96c1 | 4650 | SV* csv = sv_2mortal(newSVpvn(spv, slen)); |
13e8c8e3 | 4651 | |
46199a12 | 4652 | sv_utf8_upgrade(csv); |
8d6d96c1 | 4653 | spv = SvPV(csv, slen); |
13e8c8e3 | 4654 | } |
8d6d96c1 HS |
4655 | else |
4656 | sv_utf8_upgrade_nomg(dsv); | |
e84ff256 | 4657 | } |
8d6d96c1 | 4658 | sv_catpvn_nomg(dsv, spv, slen); |
560a288e | 4659 | } |
79072805 LW |
4660 | } |
4661 | ||
954c1994 GS |
4662 | /* |
4663 | =for apidoc sv_catsv_mg | |
4664 | ||
4665 | Like C<sv_catsv>, but also handles 'set' magic. | |
4666 | ||
4667 | =cut | |
4668 | */ | |
4669 | ||
79072805 | 4670 | void |
46199a12 | 4671 | Perl_sv_catsv_mg(pTHX_ SV *dsv, register SV *ssv) |
ef50df4b | 4672 | { |
46199a12 JH |
4673 | sv_catsv(dsv,ssv); |
4674 | SvSETMAGIC(dsv); | |
ef50df4b GS |
4675 | } |
4676 | ||
954c1994 GS |
4677 | /* |
4678 | =for apidoc sv_catpv | |
4679 | ||
4680 | Concatenates the string onto the end of the string which is in the SV. | |
d5ce4a7c GA |
4681 | If the SV has the UTF8 status set, then the bytes appended should be |
4682 | valid UTF8. Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>. | |
954c1994 | 4683 | |
d5ce4a7c | 4684 | =cut */ |
954c1994 | 4685 | |
ef50df4b | 4686 | void |
0c981600 | 4687 | Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
4688 | { |
4689 | register STRLEN len; | |
463ee0b2 | 4690 | STRLEN tlen; |
748a9306 | 4691 | char *junk; |
79072805 | 4692 | |
0c981600 | 4693 | if (!ptr) |
79072805 | 4694 | return; |
748a9306 | 4695 | junk = SvPV_force(sv, tlen); |
0c981600 | 4696 | len = strlen(ptr); |
463ee0b2 | 4697 | SvGROW(sv, tlen + len + 1); |
0c981600 JH |
4698 | if (ptr == junk) |
4699 | ptr = SvPVX(sv); | |
4700 | Move(ptr,SvPVX(sv)+tlen,len+1,char); | |
79072805 | 4701 | SvCUR(sv) += len; |
d41ff1b8 | 4702 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4703 | SvTAINT(sv); |
79072805 LW |
4704 | } |
4705 | ||
954c1994 GS |
4706 | /* |
4707 | =for apidoc sv_catpv_mg | |
4708 | ||
4709 | Like C<sv_catpv>, but also handles 'set' magic. | |
4710 | ||
4711 | =cut | |
4712 | */ | |
4713 | ||
ef50df4b | 4714 | void |
0c981600 | 4715 | Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b | 4716 | { |
0c981600 | 4717 | sv_catpv(sv,ptr); |
ef50df4b GS |
4718 | SvSETMAGIC(sv); |
4719 | } | |
4720 | ||
645c22ef DM |
4721 | /* |
4722 | =for apidoc newSV | |
4723 | ||
4724 | Create a new null SV, or if len > 0, create a new empty SVt_PV type SV | |
4725 | with an initial PV allocation of len+1. Normally accessed via the C<NEWSV> | |
4726 | macro. | |
4727 | ||
4728 | =cut | |
4729 | */ | |
4730 | ||
79072805 | 4731 | SV * |
864dbfa3 | 4732 | Perl_newSV(pTHX_ STRLEN len) |
79072805 LW |
4733 | { |
4734 | register SV *sv; | |
1c846c1f | 4735 | |
4561caa4 | 4736 | new_SV(sv); |
79072805 LW |
4737 | if (len) { |
4738 | sv_upgrade(sv, SVt_PV); | |
4739 | SvGROW(sv, len + 1); | |
4740 | } | |
4741 | return sv; | |
4742 | } | |
954c1994 | 4743 | /* |
92110913 | 4744 | =for apidoc sv_magicext |
954c1994 | 4745 | |
68795e93 | 4746 | Adds magic to an SV, upgrading it if necessary. Applies the |
92110913 NIS |
4747 | supplied vtable and returns pointer to the magic added. |
4748 | ||
4749 | Note that sv_magicext will allow things that sv_magic will not. | |
68795e93 | 4750 | In particular you can add magic to SvREADONLY SVs and and more than |
92110913 | 4751 | one instance of the same 'how' |
645c22ef | 4752 | |
92110913 | 4753 | I C<namelen> is greater then zero then a savepvn() I<copy> of C<name> is stored, |
68795e93 NIS |
4754 | if C<namelen> is zero then C<name> is stored as-is and - as another special |
4755 | case - if C<(name && namelen == HEf_SVKEY)> then C<name> is assumed to contain | |
92110913 NIS |
4756 | an C<SV*> and has its REFCNT incremented |
4757 | ||
4758 | (This is now used as a subroutine by sv_magic.) | |
954c1994 GS |
4759 | |
4760 | =cut | |
4761 | */ | |
92110913 NIS |
4762 | MAGIC * |
4763 | Perl_sv_magicext(pTHX_ SV* sv, SV* obj, int how, MGVTBL *vtable, | |
4764 | const char* name, I32 namlen) | |
79072805 LW |
4765 | { |
4766 | MAGIC* mg; | |
68795e93 | 4767 | |
92110913 NIS |
4768 | if (SvTYPE(sv) < SVt_PVMG) { |
4769 | (void)SvUPGRADE(sv, SVt_PVMG); | |
463ee0b2 | 4770 | } |
79072805 LW |
4771 | Newz(702,mg, 1, MAGIC); |
4772 | mg->mg_moremagic = SvMAGIC(sv); | |
79072805 | 4773 | SvMAGIC(sv) = mg; |
75f9d97a | 4774 | |
18808301 | 4775 | /* Some magic sontains a reference loop, where the sv and object refer to |
bb03859b RS |
4776 | each other. To prevent a reference loop that would prevent such |
4777 | objects being freed, we look for such loops and if we find one we | |
87f0b213 JH |
4778 | avoid incrementing the object refcount. |
4779 | ||
4780 | Note we cannot do this to avoid self-tie loops as intervening RV must | |
b5ccf5f2 | 4781 | have its REFCNT incremented to keep it in existence. |
87f0b213 JH |
4782 | |
4783 | */ | |
14befaf4 DM |
4784 | if (!obj || obj == sv || |
4785 | how == PERL_MAGIC_arylen || | |
4786 | how == PERL_MAGIC_qr || | |
75f9d97a JH |
4787 | (SvTYPE(obj) == SVt_PVGV && |
4788 | (GvSV(obj) == sv || GvHV(obj) == (HV*)sv || GvAV(obj) == (AV*)sv || | |
4789 | GvCV(obj) == (CV*)sv || GvIOp(obj) == (IO*)sv || | |
2628be26 | 4790 | GvFORM(obj) == (CV*)sv))) |
75f9d97a | 4791 | { |
8990e307 | 4792 | mg->mg_obj = obj; |
75f9d97a | 4793 | } |
85e6fe83 | 4794 | else { |
8990e307 | 4795 | mg->mg_obj = SvREFCNT_inc(obj); |
85e6fe83 LW |
4796 | mg->mg_flags |= MGf_REFCOUNTED; |
4797 | } | |
b5ccf5f2 YST |
4798 | |
4799 | /* Normal self-ties simply pass a null object, and instead of | |
4800 | using mg_obj directly, use the SvTIED_obj macro to produce a | |
4801 | new RV as needed. For glob "self-ties", we are tieing the PVIO | |
4802 | with an RV obj pointing to the glob containing the PVIO. In | |
4803 | this case, to avoid a reference loop, we need to weaken the | |
4804 | reference. | |
4805 | */ | |
4806 | ||
4807 | if (how == PERL_MAGIC_tiedscalar && SvTYPE(sv) == SVt_PVIO && | |
4808 | obj && SvROK(obj) && GvIO(SvRV(obj)) == (IO*)sv) | |
4809 | { | |
4810 | sv_rvweaken(obj); | |
4811 | } | |
4812 | ||
79072805 | 4813 | mg->mg_type = how; |
565764a8 | 4814 | mg->mg_len = namlen; |
9cbac4c7 | 4815 | if (name) { |
92110913 | 4816 | if (namlen > 0) |
1edc1566 | 4817 | mg->mg_ptr = savepvn(name, namlen); |
c6ee37c5 | 4818 | else if (namlen == HEf_SVKEY) |
1edc1566 | 4819 | mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name); |
68795e93 | 4820 | else |
92110913 | 4821 | mg->mg_ptr = (char *) name; |
9cbac4c7 | 4822 | } |
92110913 | 4823 | mg->mg_virtual = vtable; |
68795e93 | 4824 | |
92110913 NIS |
4825 | mg_magical(sv); |
4826 | if (SvGMAGICAL(sv)) | |
4827 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
4828 | return mg; | |
4829 | } | |
4830 | ||
4831 | /* | |
4832 | =for apidoc sv_magic | |
1c846c1f | 4833 | |
92110913 NIS |
4834 | Adds magic to an SV. First upgrades C<sv> to type C<SVt_PVMG> if necessary, |
4835 | then adds a new magic item of type C<how> to the head of the magic list. | |
4836 | ||
4837 | =cut | |
4838 | */ | |
4839 | ||
4840 | void | |
4841 | Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen) | |
68795e93 | 4842 | { |
92110913 NIS |
4843 | MAGIC* mg; |
4844 | MGVTBL *vtable = 0; | |
4845 | ||
765f542d NC |
4846 | #ifdef PERL_COPY_ON_WRITE |
4847 | if (SvIsCOW(sv)) | |
4848 | sv_force_normal_flags(sv, 0); | |
4849 | #endif | |
92110913 NIS |
4850 | if (SvREADONLY(sv)) { |
4851 | if (PL_curcop != &PL_compiling | |
4852 | && how != PERL_MAGIC_regex_global | |
4853 | && how != PERL_MAGIC_bm | |
4854 | && how != PERL_MAGIC_fm | |
4855 | && how != PERL_MAGIC_sv | |
4856 | ) | |
4857 | { | |
4858 | Perl_croak(aTHX_ PL_no_modify); | |
4859 | } | |
4860 | } | |
4861 | if (SvMAGICAL(sv) || (how == PERL_MAGIC_taint && SvTYPE(sv) >= SVt_PVMG)) { | |
4862 | if (SvMAGIC(sv) && (mg = mg_find(sv, how))) { | |
68795e93 NIS |
4863 | /* sv_magic() refuses to add a magic of the same 'how' as an |
4864 | existing one | |
92110913 NIS |
4865 | */ |
4866 | if (how == PERL_MAGIC_taint) | |
4867 | mg->mg_len |= 1; | |
4868 | return; | |
4869 | } | |
4870 | } | |
68795e93 | 4871 | |
79072805 | 4872 | switch (how) { |
14befaf4 | 4873 | case PERL_MAGIC_sv: |
92110913 | 4874 | vtable = &PL_vtbl_sv; |
79072805 | 4875 | break; |
14befaf4 | 4876 | case PERL_MAGIC_overload: |
92110913 | 4877 | vtable = &PL_vtbl_amagic; |
a0d0e21e | 4878 | break; |
14befaf4 | 4879 | case PERL_MAGIC_overload_elem: |
92110913 | 4880 | vtable = &PL_vtbl_amagicelem; |
a0d0e21e | 4881 | break; |
14befaf4 | 4882 | case PERL_MAGIC_overload_table: |
92110913 | 4883 | vtable = &PL_vtbl_ovrld; |
a0d0e21e | 4884 | break; |
14befaf4 | 4885 | case PERL_MAGIC_bm: |
92110913 | 4886 | vtable = &PL_vtbl_bm; |
79072805 | 4887 | break; |
14befaf4 | 4888 | case PERL_MAGIC_regdata: |
92110913 | 4889 | vtable = &PL_vtbl_regdata; |
6cef1e77 | 4890 | break; |
14befaf4 | 4891 | case PERL_MAGIC_regdatum: |
92110913 | 4892 | vtable = &PL_vtbl_regdatum; |
6cef1e77 | 4893 | break; |
14befaf4 | 4894 | case PERL_MAGIC_env: |
92110913 | 4895 | vtable = &PL_vtbl_env; |
79072805 | 4896 | break; |
14befaf4 | 4897 | case PERL_MAGIC_fm: |
92110913 | 4898 | vtable = &PL_vtbl_fm; |
55497cff | 4899 | break; |
14befaf4 | 4900 | case PERL_MAGIC_envelem: |
92110913 | 4901 | vtable = &PL_vtbl_envelem; |
79072805 | 4902 | break; |
14befaf4 | 4903 | case PERL_MAGIC_regex_global: |
92110913 | 4904 | vtable = &PL_vtbl_mglob; |
93a17b20 | 4905 | break; |
14befaf4 | 4906 | case PERL_MAGIC_isa: |
92110913 | 4907 | vtable = &PL_vtbl_isa; |
463ee0b2 | 4908 | break; |
14befaf4 | 4909 | case PERL_MAGIC_isaelem: |
92110913 | 4910 | vtable = &PL_vtbl_isaelem; |
463ee0b2 | 4911 | break; |
14befaf4 | 4912 | case PERL_MAGIC_nkeys: |
92110913 | 4913 | vtable = &PL_vtbl_nkeys; |
16660edb | 4914 | break; |
14befaf4 | 4915 | case PERL_MAGIC_dbfile: |
92110913 | 4916 | vtable = 0; |
93a17b20 | 4917 | break; |
14befaf4 | 4918 | case PERL_MAGIC_dbline: |
92110913 | 4919 | vtable = &PL_vtbl_dbline; |
79072805 | 4920 | break; |
36477c24 | 4921 | #ifdef USE_LOCALE_COLLATE |
14befaf4 | 4922 | case PERL_MAGIC_collxfrm: |
92110913 | 4923 | vtable = &PL_vtbl_collxfrm; |
bbce6d69 | 4924 | break; |
36477c24 | 4925 | #endif /* USE_LOCALE_COLLATE */ |
14befaf4 | 4926 | case PERL_MAGIC_tied: |
92110913 | 4927 | vtable = &PL_vtbl_pack; |
463ee0b2 | 4928 | break; |
14befaf4 DM |
4929 | case PERL_MAGIC_tiedelem: |
4930 | case PERL_MAGIC_tiedscalar: | |
92110913 | 4931 | vtable = &PL_vtbl_packelem; |
463ee0b2 | 4932 | break; |
14befaf4 | 4933 | case PERL_MAGIC_qr: |
92110913 | 4934 | vtable = &PL_vtbl_regexp; |
c277df42 | 4935 | break; |
14befaf4 | 4936 | case PERL_MAGIC_sig: |
92110913 | 4937 | vtable = &PL_vtbl_sig; |
79072805 | 4938 | break; |
14befaf4 | 4939 | case PERL_MAGIC_sigelem: |
92110913 | 4940 | vtable = &PL_vtbl_sigelem; |
79072805 | 4941 | break; |
14befaf4 | 4942 | case PERL_MAGIC_taint: |
92110913 | 4943 | vtable = &PL_vtbl_taint; |
463ee0b2 | 4944 | break; |
14befaf4 | 4945 | case PERL_MAGIC_uvar: |
92110913 | 4946 | vtable = &PL_vtbl_uvar; |
79072805 | 4947 | break; |
14befaf4 | 4948 | case PERL_MAGIC_vec: |
92110913 | 4949 | vtable = &PL_vtbl_vec; |
79072805 | 4950 | break; |
ece467f9 JP |
4951 | case PERL_MAGIC_vstring: |
4952 | vtable = 0; | |
4953 | break; | |
7e8c5dac HS |
4954 | case PERL_MAGIC_utf8: |
4955 | vtable = &PL_vtbl_utf8; | |
4956 | break; | |
14befaf4 | 4957 | case PERL_MAGIC_substr: |
92110913 | 4958 | vtable = &PL_vtbl_substr; |
79072805 | 4959 | break; |
14befaf4 | 4960 | case PERL_MAGIC_defelem: |
92110913 | 4961 | vtable = &PL_vtbl_defelem; |
5f05dabc | 4962 | break; |
14befaf4 | 4963 | case PERL_MAGIC_glob: |
92110913 | 4964 | vtable = &PL_vtbl_glob; |
79072805 | 4965 | break; |
14befaf4 | 4966 | case PERL_MAGIC_arylen: |
92110913 | 4967 | vtable = &PL_vtbl_arylen; |
79072805 | 4968 | break; |
14befaf4 | 4969 | case PERL_MAGIC_pos: |
92110913 | 4970 | vtable = &PL_vtbl_pos; |
a0d0e21e | 4971 | break; |
14befaf4 | 4972 | case PERL_MAGIC_backref: |
92110913 | 4973 | vtable = &PL_vtbl_backref; |
810b8aa5 | 4974 | break; |
14befaf4 DM |
4975 | case PERL_MAGIC_ext: |
4976 | /* Reserved for use by extensions not perl internals. */ | |
4633a7c4 LW |
4977 | /* Useful for attaching extension internal data to perl vars. */ |
4978 | /* Note that multiple extensions may clash if magical scalars */ | |
4979 | /* etc holding private data from one are passed to another. */ | |
a0d0e21e | 4980 | break; |
79072805 | 4981 | default: |
14befaf4 | 4982 | Perl_croak(aTHX_ "Don't know how to handle magic of type \\%o", how); |
463ee0b2 | 4983 | } |
68795e93 | 4984 | |
92110913 NIS |
4985 | /* Rest of work is done else where */ |
4986 | mg = sv_magicext(sv,obj,how,vtable,name,namlen); | |
68795e93 | 4987 | |
92110913 NIS |
4988 | switch (how) { |
4989 | case PERL_MAGIC_taint: | |
4990 | mg->mg_len = 1; | |
4991 | break; | |
4992 | case PERL_MAGIC_ext: | |
4993 | case PERL_MAGIC_dbfile: | |
4994 | SvRMAGICAL_on(sv); | |
4995 | break; | |
4996 | } | |
463ee0b2 LW |
4997 | } |
4998 | ||
c461cf8f JH |
4999 | /* |
5000 | =for apidoc sv_unmagic | |
5001 | ||
645c22ef | 5002 | Removes all magic of type C<type> from an SV. |
c461cf8f JH |
5003 | |
5004 | =cut | |
5005 | */ | |
5006 | ||
463ee0b2 | 5007 | int |
864dbfa3 | 5008 | Perl_sv_unmagic(pTHX_ SV *sv, int type) |
463ee0b2 LW |
5009 | { |
5010 | MAGIC* mg; | |
5011 | MAGIC** mgp; | |
91bba347 | 5012 | if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv)) |
463ee0b2 LW |
5013 | return 0; |
5014 | mgp = &SvMAGIC(sv); | |
5015 | for (mg = *mgp; mg; mg = *mgp) { | |
5016 | if (mg->mg_type == type) { | |
5017 | MGVTBL* vtbl = mg->mg_virtual; | |
5018 | *mgp = mg->mg_moremagic; | |
1d7c1841 | 5019 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 | 5020 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
14befaf4 | 5021 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
92110913 | 5022 | if (mg->mg_len > 0) |
1edc1566 | 5023 | Safefree(mg->mg_ptr); |
565764a8 | 5024 | else if (mg->mg_len == HEf_SVKEY) |
1edc1566 | 5025 | SvREFCNT_dec((SV*)mg->mg_ptr); |
7e8c5dac HS |
5026 | else if (mg->mg_type == PERL_MAGIC_utf8 && mg->mg_ptr) |
5027 | Safefree(mg->mg_ptr); | |
9cbac4c7 | 5028 | } |
a0d0e21e LW |
5029 | if (mg->mg_flags & MGf_REFCOUNTED) |
5030 | SvREFCNT_dec(mg->mg_obj); | |
463ee0b2 LW |
5031 | Safefree(mg); |
5032 | } | |
5033 | else | |
5034 | mgp = &mg->mg_moremagic; | |
79072805 | 5035 | } |
91bba347 | 5036 | if (!SvMAGIC(sv)) { |
463ee0b2 | 5037 | SvMAGICAL_off(sv); |
06759ea0 | 5038 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
463ee0b2 LW |
5039 | } |
5040 | ||
5041 | return 0; | |
79072805 LW |
5042 | } |
5043 | ||
c461cf8f JH |
5044 | /* |
5045 | =for apidoc sv_rvweaken | |
5046 | ||
645c22ef DM |
5047 | Weaken a reference: set the C<SvWEAKREF> flag on this RV; give the |
5048 | referred-to SV C<PERL_MAGIC_backref> magic if it hasn't already; and | |
5049 | push a back-reference to this RV onto the array of backreferences | |
5050 | associated with that magic. | |
c461cf8f JH |
5051 | |
5052 | =cut | |
5053 | */ | |
5054 | ||
810b8aa5 | 5055 | SV * |
864dbfa3 | 5056 | Perl_sv_rvweaken(pTHX_ SV *sv) |
810b8aa5 GS |
5057 | { |
5058 | SV *tsv; | |
5059 | if (!SvOK(sv)) /* let undefs pass */ | |
5060 | return sv; | |
5061 | if (!SvROK(sv)) | |
cea2e8a9 | 5062 | Perl_croak(aTHX_ "Can't weaken a nonreference"); |
810b8aa5 | 5063 | else if (SvWEAKREF(sv)) { |
810b8aa5 | 5064 | if (ckWARN(WARN_MISC)) |
9014280d | 5065 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Reference is already weak"); |
810b8aa5 GS |
5066 | return sv; |
5067 | } | |
5068 | tsv = SvRV(sv); | |
5069 | sv_add_backref(tsv, sv); | |
5070 | SvWEAKREF_on(sv); | |
1c846c1f | 5071 | SvREFCNT_dec(tsv); |
810b8aa5 GS |
5072 | return sv; |
5073 | } | |
5074 | ||
645c22ef DM |
5075 | /* Give tsv backref magic if it hasn't already got it, then push a |
5076 | * back-reference to sv onto the array associated with the backref magic. | |
5077 | */ | |
5078 | ||
810b8aa5 | 5079 | STATIC void |
cea2e8a9 | 5080 | S_sv_add_backref(pTHX_ SV *tsv, SV *sv) |
810b8aa5 GS |
5081 | { |
5082 | AV *av; | |
5083 | MAGIC *mg; | |
14befaf4 | 5084 | if (SvMAGICAL(tsv) && (mg = mg_find(tsv, PERL_MAGIC_backref))) |
810b8aa5 GS |
5085 | av = (AV*)mg->mg_obj; |
5086 | else { | |
5087 | av = newAV(); | |
14befaf4 | 5088 | sv_magic(tsv, (SV*)av, PERL_MAGIC_backref, NULL, 0); |
810b8aa5 GS |
5089 | SvREFCNT_dec(av); /* for sv_magic */ |
5090 | } | |
d91d49e8 MM |
5091 | if (AvFILLp(av) >= AvMAX(av)) { |
5092 | SV **svp = AvARRAY(av); | |
5093 | I32 i = AvFILLp(av); | |
5094 | while (i >= 0) { | |
5095 | if (svp[i] == &PL_sv_undef) { | |
5096 | svp[i] = sv; /* reuse the slot */ | |
5097 | return; | |
5098 | } | |
5099 | i--; | |
5100 | } | |
5101 | av_extend(av, AvFILLp(av)+1); | |
5102 | } | |
5103 | AvARRAY(av)[++AvFILLp(av)] = sv; /* av_push() */ | |
810b8aa5 GS |
5104 | } |
5105 | ||
645c22ef DM |
5106 | /* delete a back-reference to ourselves from the backref magic associated |
5107 | * with the SV we point to. | |
5108 | */ | |
5109 | ||
1c846c1f | 5110 | STATIC void |
cea2e8a9 | 5111 | S_sv_del_backref(pTHX_ SV *sv) |
810b8aa5 GS |
5112 | { |
5113 | AV *av; | |
5114 | SV **svp; | |
5115 | I32 i; | |
5116 | SV *tsv = SvRV(sv); | |
c04a4dfe | 5117 | MAGIC *mg = NULL; |
14befaf4 | 5118 | if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, PERL_MAGIC_backref))) |
cea2e8a9 | 5119 | Perl_croak(aTHX_ "panic: del_backref"); |
810b8aa5 GS |
5120 | av = (AV *)mg->mg_obj; |
5121 | svp = AvARRAY(av); | |
5122 | i = AvFILLp(av); | |
5123 | while (i >= 0) { | |
5124 | if (svp[i] == sv) { | |
5125 | svp[i] = &PL_sv_undef; /* XXX */ | |
5126 | } | |
5127 | i--; | |
5128 | } | |
5129 | } | |
5130 | ||
954c1994 GS |
5131 | /* |
5132 | =for apidoc sv_insert | |
5133 | ||
5134 | Inserts a string at the specified offset/length within the SV. Similar to | |
5135 | the Perl substr() function. | |
5136 | ||
5137 | =cut | |
5138 | */ | |
5139 | ||
79072805 | 5140 | void |
864dbfa3 | 5141 | Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen) |
79072805 LW |
5142 | { |
5143 | register char *big; | |
5144 | register char *mid; | |
5145 | register char *midend; | |
5146 | register char *bigend; | |
5147 | register I32 i; | |
6ff81951 | 5148 | STRLEN curlen; |
1c846c1f | 5149 | |
79072805 | 5150 | |
8990e307 | 5151 | if (!bigstr) |
cea2e8a9 | 5152 | Perl_croak(aTHX_ "Can't modify non-existent substring"); |
6ff81951 | 5153 | SvPV_force(bigstr, curlen); |
60fa28ff | 5154 | (void)SvPOK_only_UTF8(bigstr); |
6ff81951 GS |
5155 | if (offset + len > curlen) { |
5156 | SvGROW(bigstr, offset+len+1); | |
5157 | Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char); | |
5158 | SvCUR_set(bigstr, offset+len); | |
5159 | } | |
79072805 | 5160 | |
69b47968 | 5161 | SvTAINT(bigstr); |
79072805 LW |
5162 | i = littlelen - len; |
5163 | if (i > 0) { /* string might grow */ | |
a0d0e21e | 5164 | big = SvGROW(bigstr, SvCUR(bigstr) + i + 1); |
79072805 LW |
5165 | mid = big + offset + len; |
5166 | midend = bigend = big + SvCUR(bigstr); | |
5167 | bigend += i; | |
5168 | *bigend = '\0'; | |
5169 | while (midend > mid) /* shove everything down */ | |
5170 | *--bigend = *--midend; | |
5171 | Move(little,big+offset,littlelen,char); | |
5172 | SvCUR(bigstr) += i; | |
5173 | SvSETMAGIC(bigstr); | |
5174 | return; | |
5175 | } | |
5176 | else if (i == 0) { | |
463ee0b2 | 5177 | Move(little,SvPVX(bigstr)+offset,len,char); |
79072805 LW |
5178 | SvSETMAGIC(bigstr); |
5179 | return; | |
5180 | } | |
5181 | ||
463ee0b2 | 5182 | big = SvPVX(bigstr); |
79072805 LW |
5183 | mid = big + offset; |
5184 | midend = mid + len; | |
5185 | bigend = big + SvCUR(bigstr); | |
5186 | ||
5187 | if (midend > bigend) | |
cea2e8a9 | 5188 | Perl_croak(aTHX_ "panic: sv_insert"); |
79072805 LW |
5189 | |
5190 | if (mid - big > bigend - midend) { /* faster to shorten from end */ | |
5191 | if (littlelen) { | |
5192 | Move(little, mid, littlelen,char); | |
5193 | mid += littlelen; | |
5194 | } | |
5195 | i = bigend - midend; | |
5196 | if (i > 0) { | |
5197 | Move(midend, mid, i,char); | |
5198 | mid += i; | |
5199 | } | |
5200 | *mid = '\0'; | |
5201 | SvCUR_set(bigstr, mid - big); | |
5202 | } | |
5203 | /*SUPPRESS 560*/ | |
155aba94 | 5204 | else if ((i = mid - big)) { /* faster from front */ |
79072805 LW |
5205 | midend -= littlelen; |
5206 | mid = midend; | |
5207 | sv_chop(bigstr,midend-i); | |
5208 | big += i; | |
5209 | while (i--) | |
5210 | *--midend = *--big; | |
5211 | if (littlelen) | |
5212 | Move(little, mid, littlelen,char); | |
5213 | } | |
5214 | else if (littlelen) { | |
5215 | midend -= littlelen; | |
5216 | sv_chop(bigstr,midend); | |
5217 | Move(little,midend,littlelen,char); | |
5218 | } | |
5219 | else { | |
5220 | sv_chop(bigstr,midend); | |
5221 | } | |
5222 | SvSETMAGIC(bigstr); | |
5223 | } | |
5224 | ||
c461cf8f JH |
5225 | /* |
5226 | =for apidoc sv_replace | |
5227 | ||
5228 | Make the first argument a copy of the second, then delete the original. | |
645c22ef DM |
5229 | The target SV physically takes over ownership of the body of the source SV |
5230 | and inherits its flags; however, the target keeps any magic it owns, | |
5231 | and any magic in the source is discarded. | |
ff276b08 | 5232 | Note that this is a rather specialist SV copying operation; most of the |
645c22ef | 5233 | time you'll want to use C<sv_setsv> or one of its many macro front-ends. |
c461cf8f JH |
5234 | |
5235 | =cut | |
5236 | */ | |
79072805 LW |
5237 | |
5238 | void | |
864dbfa3 | 5239 | Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv) |
79072805 LW |
5240 | { |
5241 | U32 refcnt = SvREFCNT(sv); | |
765f542d | 5242 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
0453d815 | 5243 | if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL)) |
9014280d | 5244 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "Reference miscount in sv_replace()"); |
93a17b20 | 5245 | if (SvMAGICAL(sv)) { |
a0d0e21e LW |
5246 | if (SvMAGICAL(nsv)) |
5247 | mg_free(nsv); | |
5248 | else | |
5249 | sv_upgrade(nsv, SVt_PVMG); | |
93a17b20 | 5250 | SvMAGIC(nsv) = SvMAGIC(sv); |
a0d0e21e | 5251 | SvFLAGS(nsv) |= SvMAGICAL(sv); |
93a17b20 LW |
5252 | SvMAGICAL_off(sv); |
5253 | SvMAGIC(sv) = 0; | |
5254 | } | |
79072805 LW |
5255 | SvREFCNT(sv) = 0; |
5256 | sv_clear(sv); | |
477f5d66 | 5257 | assert(!SvREFCNT(sv)); |
79072805 | 5258 | StructCopy(nsv,sv,SV); |
d3d0e6f1 NC |
5259 | #ifdef PERL_COPY_ON_WRITE |
5260 | if (SvIsCOW_normal(nsv)) { | |
5261 | /* We need to follow the pointers around the loop to make the | |
5262 | previous SV point to sv, rather than nsv. */ | |
5263 | SV *next; | |
5264 | SV *current = nsv; | |
5265 | while ((next = SV_COW_NEXT_SV(current)) != nsv) { | |
5266 | assert(next); | |
5267 | current = next; | |
5268 | assert(SvPVX(current) == SvPVX(nsv)); | |
5269 | } | |
5270 | /* Make the SV before us point to the SV after us. */ | |
5271 | if (DEBUG_C_TEST) { | |
5272 | PerlIO_printf(Perl_debug_log, "previous is\n"); | |
5273 | sv_dump(current); | |
a29f6d03 NC |
5274 | PerlIO_printf(Perl_debug_log, |
5275 | "move it from 0x%"UVxf" to 0x%"UVxf"\n", | |
d3d0e6f1 NC |
5276 | (UV) SV_COW_NEXT_SV(current), (UV) sv); |
5277 | } | |
a29f6d03 | 5278 | SV_COW_NEXT_SV_SET(current, sv); |
d3d0e6f1 NC |
5279 | } |
5280 | #endif | |
79072805 | 5281 | SvREFCNT(sv) = refcnt; |
1edc1566 | 5282 | SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */ |
463ee0b2 | 5283 | del_SV(nsv); |
79072805 LW |
5284 | } |
5285 | ||
c461cf8f JH |
5286 | /* |
5287 | =for apidoc sv_clear | |
5288 | ||
645c22ef DM |
5289 | Clear an SV: call any destructors, free up any memory used by the body, |
5290 | and free the body itself. The SV's head is I<not> freed, although | |
5291 | its type is set to all 1's so that it won't inadvertently be assumed | |
5292 | to be live during global destruction etc. | |
5293 | This function should only be called when REFCNT is zero. Most of the time | |
5294 | you'll want to call C<sv_free()> (or its macro wrapper C<SvREFCNT_dec>) | |
5295 | instead. | |
c461cf8f JH |
5296 | |
5297 | =cut | |
5298 | */ | |
5299 | ||
79072805 | 5300 | void |
864dbfa3 | 5301 | Perl_sv_clear(pTHX_ register SV *sv) |
79072805 | 5302 | { |
ec12f114 | 5303 | HV* stash; |
79072805 LW |
5304 | assert(sv); |
5305 | assert(SvREFCNT(sv) == 0); | |
5306 | ||
ed6116ce | 5307 | if (SvOBJECT(sv)) { |
3280af22 | 5308 | if (PL_defstash) { /* Still have a symbol table? */ |
39644a26 | 5309 | dSP; |
32251b26 | 5310 | CV* destructor; |
837485b6 | 5311 | SV tmpref; |
a0d0e21e | 5312 | |
837485b6 GS |
5313 | Zero(&tmpref, 1, SV); |
5314 | sv_upgrade(&tmpref, SVt_RV); | |
5315 | SvROK_on(&tmpref); | |
5316 | SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */ | |
5317 | SvREFCNT(&tmpref) = 1; | |
8ebc5c01 | 5318 | |
d460ef45 | 5319 | do { |
4e8e7886 | 5320 | stash = SvSTASH(sv); |
32251b26 | 5321 | destructor = StashHANDLER(stash,DESTROY); |
4e8e7886 GS |
5322 | if (destructor) { |
5323 | ENTER; | |
e788e7d3 | 5324 | PUSHSTACKi(PERLSI_DESTROY); |
837485b6 | 5325 | SvRV(&tmpref) = SvREFCNT_inc(sv); |
4e8e7886 GS |
5326 | EXTEND(SP, 2); |
5327 | PUSHMARK(SP); | |
837485b6 | 5328 | PUSHs(&tmpref); |
4e8e7886 | 5329 | PUTBACK; |
44389ee9 | 5330 | call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR|G_VOID); |
4e8e7886 | 5331 | SvREFCNT(sv)--; |
d3acc0f7 | 5332 | POPSTACK; |
3095d977 | 5333 | SPAGAIN; |
4e8e7886 GS |
5334 | LEAVE; |
5335 | } | |
5336 | } while (SvOBJECT(sv) && SvSTASH(sv) != stash); | |
8ebc5c01 | 5337 | |
837485b6 | 5338 | del_XRV(SvANY(&tmpref)); |
6f44e0a4 JP |
5339 | |
5340 | if (SvREFCNT(sv)) { | |
5341 | if (PL_in_clean_objs) | |
cea2e8a9 | 5342 | Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'", |
6f44e0a4 JP |
5343 | HvNAME(stash)); |
5344 | /* DESTROY gave object new lease on life */ | |
5345 | return; | |
5346 | } | |
a0d0e21e | 5347 | } |
4e8e7886 | 5348 | |
a0d0e21e | 5349 | if (SvOBJECT(sv)) { |
4e8e7886 | 5350 | SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */ |
a0d0e21e LW |
5351 | SvOBJECT_off(sv); /* Curse the object. */ |
5352 | if (SvTYPE(sv) != SVt_PVIO) | |
3280af22 | 5353 | --PL_sv_objcount; /* XXX Might want something more general */ |
a0d0e21e | 5354 | } |
463ee0b2 | 5355 | } |
524189f1 JH |
5356 | if (SvTYPE(sv) >= SVt_PVMG) { |
5357 | if (SvMAGIC(sv)) | |
5358 | mg_free(sv); | |
5359 | if (SvFLAGS(sv) & SVpad_TYPED) | |
5360 | SvREFCNT_dec(SvSTASH(sv)); | |
5361 | } | |
ec12f114 | 5362 | stash = NULL; |
79072805 | 5363 | switch (SvTYPE(sv)) { |
8990e307 | 5364 | case SVt_PVIO: |
df0bd2f4 GS |
5365 | if (IoIFP(sv) && |
5366 | IoIFP(sv) != PerlIO_stdin() && | |
5f05dabc | 5367 | IoIFP(sv) != PerlIO_stdout() && |
5368 | IoIFP(sv) != PerlIO_stderr()) | |
93578b34 | 5369 | { |
f2b5be74 | 5370 | io_close((IO*)sv, FALSE); |
93578b34 | 5371 | } |
1d7c1841 | 5372 | if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP)) |
1236053a | 5373 | PerlDir_close(IoDIRP(sv)); |
1d7c1841 | 5374 | IoDIRP(sv) = (DIR*)NULL; |
8990e307 LW |
5375 | Safefree(IoTOP_NAME(sv)); |
5376 | Safefree(IoFMT_NAME(sv)); | |
5377 | Safefree(IoBOTTOM_NAME(sv)); | |
a0d0e21e | 5378 | /* FALL THROUGH */ |
79072805 | 5379 | case SVt_PVBM: |
a0d0e21e | 5380 | goto freescalar; |
79072805 | 5381 | case SVt_PVCV: |
748a9306 | 5382 | case SVt_PVFM: |
85e6fe83 | 5383 | cv_undef((CV*)sv); |
a0d0e21e | 5384 | goto freescalar; |
79072805 | 5385 | case SVt_PVHV: |
85e6fe83 | 5386 | hv_undef((HV*)sv); |
a0d0e21e | 5387 | break; |
79072805 | 5388 | case SVt_PVAV: |
85e6fe83 | 5389 | av_undef((AV*)sv); |
a0d0e21e | 5390 | break; |
02270b4e GS |
5391 | case SVt_PVLV: |
5392 | SvREFCNT_dec(LvTARG(sv)); | |
5393 | goto freescalar; | |
a0d0e21e | 5394 | case SVt_PVGV: |
1edc1566 | 5395 | gp_free((GV*)sv); |
a0d0e21e | 5396 | Safefree(GvNAME(sv)); |
ec12f114 JPC |
5397 | /* cannot decrease stash refcount yet, as we might recursively delete |
5398 | ourselves when the refcnt drops to zero. Delay SvREFCNT_dec | |
5399 | of stash until current sv is completely gone. | |
5400 | -- JohnPC, 27 Mar 1998 */ | |
5401 | stash = GvSTASH(sv); | |
a0d0e21e | 5402 | /* FALL THROUGH */ |
79072805 | 5403 | case SVt_PVMG: |
79072805 LW |
5404 | case SVt_PVNV: |
5405 | case SVt_PVIV: | |
a0d0e21e LW |
5406 | freescalar: |
5407 | (void)SvOOK_off(sv); | |
79072805 LW |
5408 | /* FALL THROUGH */ |
5409 | case SVt_PV: | |
a0d0e21e | 5410 | case SVt_RV: |
810b8aa5 GS |
5411 | if (SvROK(sv)) { |
5412 | if (SvWEAKREF(sv)) | |
5413 | sv_del_backref(sv); | |
5414 | else | |
5415 | SvREFCNT_dec(SvRV(sv)); | |
5416 | } | |
765f542d NC |
5417 | #ifdef PERL_COPY_ON_WRITE |
5418 | else if (SvPVX(sv)) { | |
5419 | if (SvIsCOW(sv)) { | |
5420 | /* I believe I need to grab the global SV mutex here and | |
5421 | then recheck the COW status. */ | |
46187eeb NC |
5422 | if (DEBUG_C_TEST) { |
5423 | PerlIO_printf(Perl_debug_log, "Copy on write: clear\n"); | |
e419cbc5 | 5424 | sv_dump(sv); |
46187eeb | 5425 | } |
e419cbc5 | 5426 | sv_release_COW(sv, SvPVX(sv), SvCUR(sv), SvLEN(sv), |
765f542d NC |
5427 | SvUVX(sv), SV_COW_NEXT_SV(sv)); |
5428 | /* And drop it here. */ | |
5429 | SvFAKE_off(sv); | |
5430 | } else if (SvLEN(sv)) { | |
5431 | Safefree(SvPVX(sv)); | |
5432 | } | |
5433 | } | |
5434 | #else | |
1edc1566 | 5435 | else if (SvPVX(sv) && SvLEN(sv)) |
463ee0b2 | 5436 | Safefree(SvPVX(sv)); |
1c846c1f | 5437 | else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) { |
25716404 GS |
5438 | unsharepvn(SvPVX(sv), |
5439 | SvUTF8(sv) ? -(I32)SvCUR(sv) : SvCUR(sv), | |
5440 | SvUVX(sv)); | |
1c846c1f NIS |
5441 | SvFAKE_off(sv); |
5442 | } | |
765f542d | 5443 | #endif |
79072805 | 5444 | break; |
a0d0e21e | 5445 | /* |
79072805 | 5446 | case SVt_NV: |
79072805 | 5447 | case SVt_IV: |
79072805 LW |
5448 | case SVt_NULL: |
5449 | break; | |
a0d0e21e | 5450 | */ |
79072805 LW |
5451 | } |
5452 | ||
5453 | switch (SvTYPE(sv)) { | |
5454 | case SVt_NULL: | |
5455 | break; | |
79072805 LW |
5456 | case SVt_IV: |
5457 | del_XIV(SvANY(sv)); | |
5458 | break; | |
5459 | case SVt_NV: | |
5460 | del_XNV(SvANY(sv)); | |
5461 | break; | |
ed6116ce LW |
5462 | case SVt_RV: |
5463 | del_XRV(SvANY(sv)); | |
5464 | break; | |
79072805 LW |
5465 | case SVt_PV: |
5466 | del_XPV(SvANY(sv)); | |
5467 | break; | |
5468 | case SVt_PVIV: | |
5469 | del_XPVIV(SvANY(sv)); | |
5470 | break; | |
5471 | case SVt_PVNV: | |
5472 | del_XPVNV(SvANY(sv)); | |
5473 | break; | |
5474 | case SVt_PVMG: | |
5475 | del_XPVMG(SvANY(sv)); | |
5476 | break; | |
5477 | case SVt_PVLV: | |
5478 | del_XPVLV(SvANY(sv)); | |
5479 | break; | |
5480 | case SVt_PVAV: | |
5481 | del_XPVAV(SvANY(sv)); | |
5482 | break; | |
5483 | case SVt_PVHV: | |
5484 | del_XPVHV(SvANY(sv)); | |
5485 | break; | |
5486 | case SVt_PVCV: | |
5487 | del_XPVCV(SvANY(sv)); | |
5488 | break; | |
5489 | case SVt_PVGV: | |
5490 | del_XPVGV(SvANY(sv)); | |
ec12f114 JPC |
5491 | /* code duplication for increased performance. */ |
5492 | SvFLAGS(sv) &= SVf_BREAK; | |
5493 | SvFLAGS(sv) |= SVTYPEMASK; | |
5494 | /* decrease refcount of the stash that owns this GV, if any */ | |
5495 | if (stash) | |
5496 | SvREFCNT_dec(stash); | |
5497 | return; /* not break, SvFLAGS reset already happened */ | |
79072805 LW |
5498 | case SVt_PVBM: |
5499 | del_XPVBM(SvANY(sv)); | |
5500 | break; | |
5501 | case SVt_PVFM: | |
5502 | del_XPVFM(SvANY(sv)); | |
5503 | break; | |
8990e307 LW |
5504 | case SVt_PVIO: |
5505 | del_XPVIO(SvANY(sv)); | |
5506 | break; | |
79072805 | 5507 | } |
a0d0e21e | 5508 | SvFLAGS(sv) &= SVf_BREAK; |
8990e307 | 5509 | SvFLAGS(sv) |= SVTYPEMASK; |
79072805 LW |
5510 | } |
5511 | ||
645c22ef DM |
5512 | /* |
5513 | =for apidoc sv_newref | |
5514 | ||
5515 | Increment an SV's reference count. Use the C<SvREFCNT_inc()> wrapper | |
5516 | instead. | |
5517 | ||
5518 | =cut | |
5519 | */ | |
5520 | ||
79072805 | 5521 | SV * |
864dbfa3 | 5522 | Perl_sv_newref(pTHX_ SV *sv) |
79072805 | 5523 | { |
463ee0b2 | 5524 | if (sv) |
4db098f4 | 5525 | (SvREFCNT(sv))++; |
79072805 LW |
5526 | return sv; |
5527 | } | |
5528 | ||
c461cf8f JH |
5529 | /* |
5530 | =for apidoc sv_free | |
5531 | ||
645c22ef DM |
5532 | Decrement an SV's reference count, and if it drops to zero, call |
5533 | C<sv_clear> to invoke destructors and free up any memory used by | |
5534 | the body; finally, deallocate the SV's head itself. | |
5535 | Normally called via a wrapper macro C<SvREFCNT_dec>. | |
c461cf8f JH |
5536 | |
5537 | =cut | |
5538 | */ | |
5539 | ||
79072805 | 5540 | void |
864dbfa3 | 5541 | Perl_sv_free(pTHX_ SV *sv) |
79072805 LW |
5542 | { |
5543 | if (!sv) | |
5544 | return; | |
a0d0e21e LW |
5545 | if (SvREFCNT(sv) == 0) { |
5546 | if (SvFLAGS(sv) & SVf_BREAK) | |
645c22ef DM |
5547 | /* this SV's refcnt has been artificially decremented to |
5548 | * trigger cleanup */ | |
a0d0e21e | 5549 | return; |
3280af22 | 5550 | if (PL_in_clean_all) /* All is fair */ |
1edc1566 | 5551 | return; |
d689ffdd JP |
5552 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
5553 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
5554 | SvREFCNT(sv) = (~(U32)0)/2; | |
5555 | return; | |
5556 | } | |
0453d815 | 5557 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 5558 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "Attempt to free unreferenced scalar"); |
79072805 LW |
5559 | return; |
5560 | } | |
4db098f4 | 5561 | if (--(SvREFCNT(sv)) > 0) |
8990e307 | 5562 | return; |
8c4d3c90 NC |
5563 | Perl_sv_free2(aTHX_ sv); |
5564 | } | |
5565 | ||
5566 | void | |
5567 | Perl_sv_free2(pTHX_ SV *sv) | |
5568 | { | |
463ee0b2 LW |
5569 | #ifdef DEBUGGING |
5570 | if (SvTEMP(sv)) { | |
0453d815 | 5571 | if (ckWARN_d(WARN_DEBUGGING)) |
9014280d | 5572 | Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), |
1d7c1841 GS |
5573 | "Attempt to free temp prematurely: SV 0x%"UVxf, |
5574 | PTR2UV(sv)); | |
79072805 | 5575 | return; |
79072805 | 5576 | } |
463ee0b2 | 5577 | #endif |
d689ffdd JP |
5578 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
5579 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
5580 | SvREFCNT(sv) = (~(U32)0)/2; | |
5581 | return; | |
5582 | } | |
79072805 | 5583 | sv_clear(sv); |
477f5d66 CS |
5584 | if (! SvREFCNT(sv)) |
5585 | del_SV(sv); | |
79072805 LW |
5586 | } |
5587 | ||
954c1994 GS |
5588 | /* |
5589 | =for apidoc sv_len | |
5590 | ||
645c22ef DM |
5591 | Returns the length of the string in the SV. Handles magic and type |
5592 | coercion. See also C<SvCUR>, which gives raw access to the xpv_cur slot. | |
954c1994 GS |
5593 | |
5594 | =cut | |
5595 | */ | |
5596 | ||
79072805 | 5597 | STRLEN |
864dbfa3 | 5598 | Perl_sv_len(pTHX_ register SV *sv) |
79072805 | 5599 | { |
463ee0b2 | 5600 | STRLEN len; |
79072805 LW |
5601 | |
5602 | if (!sv) | |
5603 | return 0; | |
5604 | ||
8990e307 | 5605 | if (SvGMAGICAL(sv)) |
565764a8 | 5606 | len = mg_length(sv); |
8990e307 | 5607 | else |
497b47a8 | 5608 | (void)SvPV(sv, len); |
463ee0b2 | 5609 | return len; |
79072805 LW |
5610 | } |
5611 | ||
c461cf8f JH |
5612 | /* |
5613 | =for apidoc sv_len_utf8 | |
5614 | ||
5615 | Returns the number of characters in the string in an SV, counting wide | |
645c22ef | 5616 | UTF8 bytes as a single character. Handles magic and type coercion. |
c461cf8f JH |
5617 | |
5618 | =cut | |
5619 | */ | |
5620 | ||
7e8c5dac HS |
5621 | /* |
5622 | * The length is cached in PERL_UTF8_magic, in the mg_len field. Also the | |
5623 | * mg_ptr is used, by sv_pos_u2b(), see the comments of S_utf8_mg_pos_init(). | |
5624 | * (Note that the mg_len is not the length of the mg_ptr field.) | |
5625 | * | |
5626 | */ | |
5627 | ||
a0ed51b3 | 5628 | STRLEN |
864dbfa3 | 5629 | Perl_sv_len_utf8(pTHX_ register SV *sv) |
a0ed51b3 | 5630 | { |
a0ed51b3 LW |
5631 | if (!sv) |
5632 | return 0; | |
5633 | ||
a0ed51b3 | 5634 | if (SvGMAGICAL(sv)) |
b76347f2 | 5635 | return mg_length(sv); |
a0ed51b3 | 5636 | else |
b76347f2 | 5637 | { |
7e8c5dac | 5638 | STRLEN len, ulen; |
b76347f2 | 5639 | U8 *s = (U8*)SvPV(sv, len); |
7e8c5dac HS |
5640 | MAGIC *mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_utf8) : 0; |
5641 | ||
5642 | if (mg && mg->mg_len != -1 && (mg->mg_len > 0 || len == 0)) | |
5643 | ulen = mg->mg_len; | |
5644 | else { | |
5645 | ulen = Perl_utf8_length(aTHX_ s, s + len); | |
5646 | if (!mg && !SvREADONLY(sv)) { | |
5647 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
5648 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
5649 | assert(mg); | |
5650 | } | |
5651 | if (mg) | |
5652 | mg->mg_len = ulen; | |
5653 | } | |
5654 | return ulen; | |
5655 | } | |
5656 | } | |
5657 | ||
5658 | /* S_utf8_mg_pos_init() is used to initialize the mg_ptr field of | |
5659 | * a PERL_UTF8_magic. The mg_ptr is used to store the mapping | |
5660 | * between UTF-8 and byte offsets. There are two (substr offset and substr | |
5661 | * length, the i offset, PERL_MAGIC_UTF8_CACHESIZE) times two (UTF-8 offset | |
5662 | * and byte offset) cache positions. | |
5663 | * | |
5664 | * The mg_len field is used by sv_len_utf8(), see its comments. | |
5665 | * Note that the mg_len is not the length of the mg_ptr field. | |
5666 | * | |
5667 | */ | |
5668 | STATIC bool | |
6e551876 | 5669 | S_utf8_mg_pos_init(pTHX_ SV *sv, MAGIC **mgp, STRLEN **cachep, I32 i, I32 *offsetp, U8 *s, U8 *start) |
7e8c5dac HS |
5670 | { |
5671 | bool found = FALSE; | |
5672 | ||
5673 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
5674 | if (!*mgp) { | |
5675 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
5676 | *mgp = mg_find(sv, PERL_MAGIC_utf8); | |
5677 | } | |
5678 | assert(*mgp); | |
b76347f2 | 5679 | |
7e8c5dac HS |
5680 | if ((*mgp)->mg_ptr) |
5681 | *cachep = (STRLEN *) (*mgp)->mg_ptr; | |
5682 | else { | |
5683 | Newz(0, *cachep, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); | |
5684 | (*mgp)->mg_ptr = (char *) *cachep; | |
5685 | } | |
5686 | assert(*cachep); | |
5687 | ||
5688 | (*cachep)[i] = *offsetp; | |
5689 | (*cachep)[i+1] = s - start; | |
5690 | found = TRUE; | |
a0ed51b3 | 5691 | } |
7e8c5dac HS |
5692 | |
5693 | return found; | |
a0ed51b3 LW |
5694 | } |
5695 | ||
645c22ef | 5696 | /* |
7e8c5dac HS |
5697 | * S_utf8_mg_pos() is used to query and update mg_ptr field of |
5698 | * a PERL_UTF8_magic. The mg_ptr is used to store the mapping | |
5699 | * between UTF-8 and byte offsets. See also the comments of | |
5700 | * S_utf8_mg_pos_init(). | |
5701 | * | |
5702 | */ | |
5703 | STATIC bool | |
6e551876 | 5704 | 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 |
5705 | { |
5706 | bool found = FALSE; | |
5707 | ||
5708 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
5709 | if (!*mgp) | |
5710 | *mgp = mg_find(sv, PERL_MAGIC_utf8); | |
5711 | if (*mgp && (*mgp)->mg_ptr) { | |
5712 | *cachep = (STRLEN *) (*mgp)->mg_ptr; | |
667208dd | 5713 | if ((*cachep)[i] == (STRLEN)uoff) /* An exact match. */ |
7e8c5dac HS |
5714 | found = TRUE; |
5715 | else { /* We will skip to the right spot. */ | |
5716 | STRLEN forw = 0; | |
5717 | STRLEN backw = 0; | |
5718 | U8* p = NULL; | |
5719 | ||
5720 | /* The assumption is that going backward is half | |
5721 | * the speed of going forward (that's where the | |
5722 | * 2 * backw in the below comes from). (The real | |
5723 | * figure of course depends on the UTF-8 data.) */ | |
5724 | ||
667208dd | 5725 | if ((*cachep)[i] > (STRLEN)uoff) { |
7e8c5dac | 5726 | forw = uoff; |
667208dd | 5727 | backw = (*cachep)[i] - (STRLEN)uoff; |
7e8c5dac HS |
5728 | |
5729 | if (forw < 2 * backw) | |
5730 | p = start; | |
5731 | else | |
5732 | p = start + (*cachep)[i+1]; | |
5733 | } | |
5734 | /* Try this only for the substr offset (i == 0), | |
5735 | * not for the substr length (i == 2). */ | |
5736 | else if (i == 0) { /* (*cachep)[i] < uoff */ | |
5737 | STRLEN ulen = sv_len_utf8(sv); | |
5738 | ||
667208dd JH |
5739 | if ((STRLEN)uoff < ulen) { |
5740 | forw = (STRLEN)uoff - (*cachep)[i]; | |
5741 | backw = ulen - (STRLEN)uoff; | |
7e8c5dac HS |
5742 | |
5743 | if (forw < 2 * backw) | |
5744 | p = start + (*cachep)[i+1]; | |
5745 | else | |
5746 | p = send; | |
5747 | } | |
5748 | ||
5749 | /* If the string is not long enough for uoff, | |
5750 | * we could extend it, but not at this low a level. */ | |
5751 | } | |
5752 | ||
5753 | if (p) { | |
5754 | if (forw < 2 * backw) { | |
5755 | while (forw--) | |
5756 | p += UTF8SKIP(p); | |
5757 | } | |
5758 | else { | |
5759 | while (backw--) { | |
5760 | p--; | |
5761 | while (UTF8_IS_CONTINUATION(*p)) | |
5762 | p--; | |
5763 | } | |
5764 | } | |
5765 | ||
5766 | /* Update the cache. */ | |
667208dd | 5767 | (*cachep)[i] = (STRLEN)uoff; |
7e8c5dac HS |
5768 | (*cachep)[i+1] = p - start; |
5769 | ||
5770 | found = TRUE; | |
5771 | } | |
5772 | } | |
5773 | if (found) { /* Setup the return values. */ | |
5774 | *offsetp = (*cachep)[i+1]; | |
5775 | *sp = start + *offsetp; | |
5776 | if (*sp >= send) { | |
5777 | *sp = send; | |
5778 | *offsetp = send - start; | |
5779 | } | |
5780 | else if (*sp < start) { | |
5781 | *sp = start; | |
5782 | *offsetp = 0; | |
5783 | } | |
5784 | } | |
5785 | } | |
5786 | } | |
5787 | return found; | |
5788 | } | |
5789 | ||
5790 | /* | |
645c22ef DM |
5791 | =for apidoc sv_pos_u2b |
5792 | ||
5793 | Converts the value pointed to by offsetp from a count of UTF8 chars from | |
5794 | the start of the string, to a count of the equivalent number of bytes; if | |
5795 | lenp is non-zero, it does the same to lenp, but this time starting from | |
5796 | the offset, rather than from the start of the string. Handles magic and | |
5797 | type coercion. | |
5798 | ||
5799 | =cut | |
5800 | */ | |
5801 | ||
7e8c5dac HS |
5802 | /* |
5803 | * sv_pos_u2b() uses, like sv_pos_b2u(), the mg_ptr of the potential | |
5804 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
5805 | * byte offsets. See also the comments of S_utf8_mg_pos(). | |
5806 | * | |
5807 | */ | |
5808 | ||
a0ed51b3 | 5809 | void |
864dbfa3 | 5810 | Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp) |
a0ed51b3 | 5811 | { |
dfe13c55 GS |
5812 | U8 *start; |
5813 | U8 *s; | |
a0ed51b3 | 5814 | STRLEN len; |
7e8c5dac HS |
5815 | STRLEN *cache = 0; |
5816 | STRLEN boffset = 0; | |
a0ed51b3 LW |
5817 | |
5818 | if (!sv) | |
5819 | return; | |
5820 | ||
dfe13c55 | 5821 | start = s = (U8*)SvPV(sv, len); |
7e8c5dac HS |
5822 | if (len) { |
5823 | I32 uoffset = *offsetp; | |
5824 | U8 *send = s + len; | |
5825 | MAGIC *mg = 0; | |
5826 | bool found = FALSE; | |
5827 | ||
bdf77a2a | 5828 | if (utf8_mg_pos(sv, &mg, &cache, 0, offsetp, *offsetp, &s, start, send)) |
7e8c5dac HS |
5829 | found = TRUE; |
5830 | if (!found && uoffset > 0) { | |
5831 | while (s < send && uoffset--) | |
5832 | s += UTF8SKIP(s); | |
5833 | if (s >= send) | |
5834 | s = send; | |
bdf77a2a | 5835 | if (utf8_mg_pos_init(sv, &mg, &cache, 0, offsetp, s, start)) |
7e8c5dac HS |
5836 | boffset = cache[1]; |
5837 | *offsetp = s - start; | |
5838 | } | |
5839 | if (lenp) { | |
5840 | found = FALSE; | |
5841 | start = s; | |
bdf77a2a | 5842 | if (utf8_mg_pos(sv, &mg, &cache, 2, lenp, *lenp + *offsetp, &s, start, send)) { |
7e8c5dac HS |
5843 | *lenp -= boffset; |
5844 | found = TRUE; | |
5845 | } | |
5846 | if (!found && *lenp > 0) { | |
5847 | I32 ulen = *lenp; | |
5848 | if (ulen > 0) | |
5849 | while (s < send && ulen--) | |
5850 | s += UTF8SKIP(s); | |
5851 | if (s >= send) | |
5852 | s = send; | |
bdf77a2a | 5853 | if (utf8_mg_pos_init(sv, &mg, &cache, 2, lenp, s, start)) |
7e8c5dac HS |
5854 | cache[2] += *offsetp; |
5855 | } | |
5856 | *lenp = s - start; | |
5857 | } | |
5858 | } | |
5859 | else { | |
5860 | *offsetp = 0; | |
5861 | if (lenp) | |
5862 | *lenp = 0; | |
a0ed51b3 LW |
5863 | } |
5864 | return; | |
5865 | } | |
5866 | ||
645c22ef DM |
5867 | /* |
5868 | =for apidoc sv_pos_b2u | |
5869 | ||
5870 | Converts the value pointed to by offsetp from a count of bytes from the | |
5871 | start of the string, to a count of the equivalent number of UTF8 chars. | |
5872 | Handles magic and type coercion. | |
5873 | ||
5874 | =cut | |
5875 | */ | |
5876 | ||
7e8c5dac HS |
5877 | /* |
5878 | * sv_pos_b2u() uses, like sv_pos_u2b(), the mg_ptr of the potential | |
5879 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
5880 | * byte offsets. See also the comments of S_utf8_mg_pos(). | |
5881 | * | |
5882 | */ | |
5883 | ||
a0ed51b3 | 5884 | void |
7e8c5dac | 5885 | Perl_sv_pos_b2u(pTHX_ register SV* sv, I32* offsetp) |
a0ed51b3 | 5886 | { |
7e8c5dac | 5887 | U8* s; |
a0ed51b3 LW |
5888 | STRLEN len; |
5889 | ||
5890 | if (!sv) | |
5891 | return; | |
5892 | ||
dfe13c55 | 5893 | s = (U8*)SvPV(sv, len); |
eb160463 | 5894 | if ((I32)len < *offsetp) |
a0dbb045 | 5895 | Perl_croak(aTHX_ "panic: sv_pos_b2u: bad byte offset"); |
7e8c5dac HS |
5896 | else { |
5897 | U8* send = s + *offsetp; | |
5898 | MAGIC* mg = NULL; | |
5899 | STRLEN *cache = NULL; | |
5900 | ||
5901 | len = 0; | |
5902 | ||
5903 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
5904 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
5905 | if (mg && mg->mg_ptr) { | |
5906 | cache = (STRLEN *) mg->mg_ptr; | |
5907 | if (cache[1] == *offsetp) { | |
5908 | /* An exact match. */ | |
5909 | *offsetp = cache[0]; | |
5910 | ||
5911 | return; | |
5912 | } | |
5913 | else if (cache[1] < *offsetp) { | |
5914 | /* We already know part of the way. */ | |
5915 | len = cache[0]; | |
5916 | s += cache[1]; | |
5917 | /* Let the below loop do the rest. */ | |
5918 | } | |
5919 | else { /* cache[1] > *offsetp */ | |
5920 | /* We already know all of the way, now we may | |
5921 | * be able to walk back. The same assumption | |
5922 | * is made as in S_utf8_mg_pos(), namely that | |
5923 | * walking backward is twice slower than | |
5924 | * walking forward. */ | |
5925 | STRLEN forw = *offsetp; | |
5926 | STRLEN backw = cache[1] - *offsetp; | |
5927 | ||
5928 | if (!(forw < 2 * backw)) { | |
5929 | U8 *p = s + cache[1]; | |
5930 | STRLEN ubackw = 0; | |
5931 | ||
a5b510f2 AE |
5932 | cache[1] -= backw; |
5933 | ||
7e8c5dac HS |
5934 | while (backw--) { |
5935 | p--; | |
5936 | while (UTF8_IS_CONTINUATION(*p)) | |
5937 | p--; | |
5938 | ubackw++; | |
5939 | } | |
5940 | ||
5941 | cache[0] -= ubackw; | |
7e8c5dac HS |
5942 | |
5943 | return; | |
5944 | } | |
5945 | } | |
5946 | } | |
a0dbb045 | 5947 | } |
7e8c5dac HS |
5948 | |
5949 | while (s < send) { | |
5950 | STRLEN n = 1; | |
5951 | ||
5952 | /* Call utf8n_to_uvchr() to validate the sequence | |
5953 | * (unless a simple non-UTF character) */ | |
5954 | if (!UTF8_IS_INVARIANT(*s)) | |
5955 | utf8n_to_uvchr(s, UTF8SKIP(s), &n, 0); | |
5956 | if (n > 0) { | |
5957 | s += n; | |
5958 | len++; | |
5959 | } | |
5960 | else | |
5961 | break; | |
5962 | } | |
5963 | ||
5964 | if (!SvREADONLY(sv)) { | |
5965 | if (!mg) { | |
5966 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
5967 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
5968 | } | |
5969 | assert(mg); | |
5970 | ||
5971 | if (!mg->mg_ptr) { | |
5972 | Newz(0, cache, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); | |
5973 | mg->mg_ptr = (char *) cache; | |
5974 | } | |
5975 | assert(cache); | |
5976 | ||
5977 | cache[0] = len; | |
5978 | cache[1] = *offsetp; | |
5979 | } | |
5980 | ||
5981 | *offsetp = len; | |
a0ed51b3 | 5982 | } |
a0ed51b3 LW |
5983 | return; |
5984 | } | |
5985 | ||
954c1994 GS |
5986 | /* |
5987 | =for apidoc sv_eq | |
5988 | ||
5989 | Returns a boolean indicating whether the strings in the two SVs are | |
645c22ef DM |
5990 | identical. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
5991 | coerce its args to strings if necessary. | |
954c1994 GS |
5992 | |
5993 | =cut | |
5994 | */ | |
5995 | ||
79072805 | 5996 | I32 |
e01b9e88 | 5997 | Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2) |
79072805 LW |
5998 | { |
5999 | char *pv1; | |
463ee0b2 | 6000 | STRLEN cur1; |
79072805 | 6001 | char *pv2; |
463ee0b2 | 6002 | STRLEN cur2; |
e01b9e88 | 6003 | I32 eq = 0; |
553e1bcc AT |
6004 | char *tpv = Nullch; |
6005 | SV* svrecode = Nullsv; | |
79072805 | 6006 | |
e01b9e88 | 6007 | if (!sv1) { |
79072805 LW |
6008 | pv1 = ""; |
6009 | cur1 = 0; | |
6010 | } | |
463ee0b2 | 6011 | else |
e01b9e88 | 6012 | pv1 = SvPV(sv1, cur1); |
79072805 | 6013 | |
e01b9e88 SC |
6014 | if (!sv2){ |
6015 | pv2 = ""; | |
6016 | cur2 = 0; | |
92d29cee | 6017 | } |
e01b9e88 SC |
6018 | else |
6019 | pv2 = SvPV(sv2, cur2); | |
79072805 | 6020 | |
cf48d248 | 6021 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
6022 | /* Differing utf8ness. |
6023 | * Do not UTF8size the comparands as a side-effect. */ | |
6024 | if (PL_encoding) { | |
6025 | if (SvUTF8(sv1)) { | |
553e1bcc AT |
6026 | svrecode = newSVpvn(pv2, cur2); |
6027 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6028 | pv2 = SvPV(svrecode, cur2); | |
799ef3cb JH |
6029 | } |
6030 | else { | |
553e1bcc AT |
6031 | svrecode = newSVpvn(pv1, cur1); |
6032 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6033 | pv1 = SvPV(svrecode, cur1); | |
799ef3cb JH |
6034 | } |
6035 | /* Now both are in UTF-8. */ | |
6036 | if (cur1 != cur2) | |
6037 | return FALSE; | |
6038 | } | |
6039 | else { | |
6040 | bool is_utf8 = TRUE; | |
6041 | ||
6042 | if (SvUTF8(sv1)) { | |
6043 | /* sv1 is the UTF-8 one, | |
6044 | * if is equal it must be downgrade-able */ | |
6045 | char *pv = (char*)bytes_from_utf8((U8*)pv1, | |
6046 | &cur1, &is_utf8); | |
6047 | if (pv != pv1) | |
553e1bcc | 6048 | pv1 = tpv = pv; |
799ef3cb JH |
6049 | } |
6050 | else { | |
6051 | /* sv2 is the UTF-8 one, | |
6052 | * if is equal it must be downgrade-able */ | |
6053 | char *pv = (char *)bytes_from_utf8((U8*)pv2, | |
6054 | &cur2, &is_utf8); | |
6055 | if (pv != pv2) | |
553e1bcc | 6056 | pv2 = tpv = pv; |
799ef3cb JH |
6057 | } |
6058 | if (is_utf8) { | |
6059 | /* Downgrade not possible - cannot be eq */ | |
6060 | return FALSE; | |
6061 | } | |
6062 | } | |
cf48d248 JH |
6063 | } |
6064 | ||
6065 | if (cur1 == cur2) | |
765f542d | 6066 | eq = (pv1 == pv2) || memEQ(pv1, pv2, cur1); |
e01b9e88 | 6067 | |
553e1bcc AT |
6068 | if (svrecode) |
6069 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6070 | |
553e1bcc AT |
6071 | if (tpv) |
6072 | Safefree(tpv); | |
cf48d248 | 6073 | |
e01b9e88 | 6074 | return eq; |
79072805 LW |
6075 | } |
6076 | ||
954c1994 GS |
6077 | /* |
6078 | =for apidoc sv_cmp | |
6079 | ||
6080 | Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the | |
6081 | string in C<sv1> is less than, equal to, or greater than the string in | |
645c22ef DM |
6082 | C<sv2>. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
6083 | coerce its args to strings if necessary. See also C<sv_cmp_locale>. | |
954c1994 GS |
6084 | |
6085 | =cut | |
6086 | */ | |
6087 | ||
79072805 | 6088 | I32 |
e01b9e88 | 6089 | Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2) |
79072805 | 6090 | { |
560a288e | 6091 | STRLEN cur1, cur2; |
553e1bcc | 6092 | char *pv1, *pv2, *tpv = Nullch; |
cf48d248 | 6093 | I32 cmp; |
553e1bcc | 6094 | SV *svrecode = Nullsv; |
560a288e | 6095 | |
e01b9e88 SC |
6096 | if (!sv1) { |
6097 | pv1 = ""; | |
560a288e GS |
6098 | cur1 = 0; |
6099 | } | |
e01b9e88 SC |
6100 | else |
6101 | pv1 = SvPV(sv1, cur1); | |
560a288e | 6102 | |
553e1bcc | 6103 | if (!sv2) { |
e01b9e88 | 6104 | pv2 = ""; |
560a288e GS |
6105 | cur2 = 0; |
6106 | } | |
e01b9e88 SC |
6107 | else |
6108 | pv2 = SvPV(sv2, cur2); | |
79072805 | 6109 | |
cf48d248 | 6110 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
6111 | /* Differing utf8ness. |
6112 | * Do not UTF8size the comparands as a side-effect. */ | |
cf48d248 | 6113 | if (SvUTF8(sv1)) { |
799ef3cb | 6114 | if (PL_encoding) { |
553e1bcc AT |
6115 | svrecode = newSVpvn(pv2, cur2); |
6116 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6117 | pv2 = SvPV(svrecode, cur2); | |
799ef3cb JH |
6118 | } |
6119 | else { | |
553e1bcc | 6120 | pv2 = tpv = (char*)bytes_to_utf8((U8*)pv2, &cur2); |
799ef3cb | 6121 | } |
cf48d248 JH |
6122 | } |
6123 | else { | |
799ef3cb | 6124 | if (PL_encoding) { |
553e1bcc AT |
6125 | svrecode = newSVpvn(pv1, cur1); |
6126 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6127 | pv1 = SvPV(svrecode, cur1); | |
799ef3cb JH |
6128 | } |
6129 | else { | |
553e1bcc | 6130 | pv1 = tpv = (char*)bytes_to_utf8((U8*)pv1, &cur1); |
799ef3cb | 6131 | } |
cf48d248 JH |
6132 | } |
6133 | } | |
6134 | ||
e01b9e88 | 6135 | if (!cur1) { |
cf48d248 | 6136 | cmp = cur2 ? -1 : 0; |
e01b9e88 | 6137 | } else if (!cur2) { |
cf48d248 JH |
6138 | cmp = 1; |
6139 | } else { | |
6140 | I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2); | |
e01b9e88 SC |
6141 | |
6142 | if (retval) { | |
cf48d248 | 6143 | cmp = retval < 0 ? -1 : 1; |
e01b9e88 | 6144 | } else if (cur1 == cur2) { |
cf48d248 JH |
6145 | cmp = 0; |
6146 | } else { | |
6147 | cmp = cur1 < cur2 ? -1 : 1; | |
e01b9e88 | 6148 | } |
cf48d248 | 6149 | } |
16660edb | 6150 | |
553e1bcc AT |
6151 | if (svrecode) |
6152 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6153 | |
553e1bcc AT |
6154 | if (tpv) |
6155 | Safefree(tpv); | |
cf48d248 JH |
6156 | |
6157 | return cmp; | |
bbce6d69 | 6158 | } |
16660edb | 6159 | |
c461cf8f JH |
6160 | /* |
6161 | =for apidoc sv_cmp_locale | |
6162 | ||
645c22ef DM |
6163 | Compares the strings in two SVs in a locale-aware manner. Is UTF-8 and |
6164 | 'use bytes' aware, handles get magic, and will coerce its args to strings | |
6165 | if necessary. See also C<sv_cmp_locale>. See also C<sv_cmp>. | |
c461cf8f JH |
6166 | |
6167 | =cut | |
6168 | */ | |
6169 | ||
bbce6d69 | 6170 | I32 |
864dbfa3 | 6171 | Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2) |
bbce6d69 | 6172 | { |
36477c24 | 6173 | #ifdef USE_LOCALE_COLLATE |
16660edb | 6174 | |
bbce6d69 | 6175 | char *pv1, *pv2; |
6176 | STRLEN len1, len2; | |
6177 | I32 retval; | |
16660edb | 6178 | |
3280af22 | 6179 | if (PL_collation_standard) |
bbce6d69 | 6180 | goto raw_compare; |
16660edb | 6181 | |
bbce6d69 | 6182 | len1 = 0; |
8ac85365 | 6183 | pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL; |
bbce6d69 | 6184 | len2 = 0; |
8ac85365 | 6185 | pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL; |
16660edb | 6186 | |
bbce6d69 | 6187 | if (!pv1 || !len1) { |
6188 | if (pv2 && len2) | |
6189 | return -1; | |
6190 | else | |
6191 | goto raw_compare; | |
6192 | } | |
6193 | else { | |
6194 | if (!pv2 || !len2) | |
6195 | return 1; | |
6196 | } | |
16660edb | 6197 | |
bbce6d69 | 6198 | retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2); |
16660edb | 6199 | |
bbce6d69 | 6200 | if (retval) |
16660edb | 6201 | return retval < 0 ? -1 : 1; |
6202 | ||
bbce6d69 | 6203 | /* |
6204 | * When the result of collation is equality, that doesn't mean | |
6205 | * that there are no differences -- some locales exclude some | |
6206 | * characters from consideration. So to avoid false equalities, | |
6207 | * we use the raw string as a tiebreaker. | |
6208 | */ | |
16660edb | 6209 | |
bbce6d69 | 6210 | raw_compare: |
6211 | /* FALL THROUGH */ | |
16660edb | 6212 | |
36477c24 | 6213 | #endif /* USE_LOCALE_COLLATE */ |
16660edb | 6214 | |
bbce6d69 | 6215 | return sv_cmp(sv1, sv2); |
6216 | } | |
79072805 | 6217 | |
645c22ef | 6218 | |
36477c24 | 6219 | #ifdef USE_LOCALE_COLLATE |
645c22ef | 6220 | |
7a4c00b4 | 6221 | /* |
645c22ef DM |
6222 | =for apidoc sv_collxfrm |
6223 | ||
6224 | Add Collate Transform magic to an SV if it doesn't already have it. | |
6225 | ||
6226 | Any scalar variable may carry PERL_MAGIC_collxfrm magic that contains the | |
6227 | scalar data of the variable, but transformed to such a format that a normal | |
6228 | memory comparison can be used to compare the data according to the locale | |
6229 | settings. | |
6230 | ||
6231 | =cut | |
6232 | */ | |
6233 | ||
bbce6d69 | 6234 | char * |
864dbfa3 | 6235 | Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp) |
bbce6d69 | 6236 | { |
7a4c00b4 | 6237 | MAGIC *mg; |
16660edb | 6238 | |
14befaf4 | 6239 | mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_collxfrm) : (MAGIC *) NULL; |
3280af22 | 6240 | if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) { |
bbce6d69 | 6241 | char *s, *xf; |
6242 | STRLEN len, xlen; | |
6243 | ||
7a4c00b4 | 6244 | if (mg) |
6245 | Safefree(mg->mg_ptr); | |
bbce6d69 | 6246 | s = SvPV(sv, len); |
6247 | if ((xf = mem_collxfrm(s, len, &xlen))) { | |
ff0cee69 | 6248 | if (SvREADONLY(sv)) { |
6249 | SAVEFREEPV(xf); | |
6250 | *nxp = xlen; | |
3280af22 | 6251 | return xf + sizeof(PL_collation_ix); |
ff0cee69 | 6252 | } |
7a4c00b4 | 6253 | if (! mg) { |
14befaf4 DM |
6254 | sv_magic(sv, 0, PERL_MAGIC_collxfrm, 0, 0); |
6255 | mg = mg_find(sv, PERL_MAGIC_collxfrm); | |
7a4c00b4 | 6256 | assert(mg); |
bbce6d69 | 6257 | } |
7a4c00b4 | 6258 | mg->mg_ptr = xf; |
565764a8 | 6259 | mg->mg_len = xlen; |
7a4c00b4 | 6260 | } |
6261 | else { | |
ff0cee69 | 6262 | if (mg) { |
6263 | mg->mg_ptr = NULL; | |
565764a8 | 6264 | mg->mg_len = -1; |
ff0cee69 | 6265 | } |
bbce6d69 | 6266 | } |
6267 | } | |
7a4c00b4 | 6268 | if (mg && mg->mg_ptr) { |
565764a8 | 6269 | *nxp = mg->mg_len; |
3280af22 | 6270 | return mg->mg_ptr + sizeof(PL_collation_ix); |
bbce6d69 | 6271 | } |
6272 | else { | |
6273 | *nxp = 0; | |
6274 | return NULL; | |
16660edb | 6275 | } |
79072805 LW |
6276 | } |
6277 | ||
36477c24 | 6278 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 6279 | |
c461cf8f JH |
6280 | /* |
6281 | =for apidoc sv_gets | |
6282 | ||
6283 | Get a line from the filehandle and store it into the SV, optionally | |
6284 | appending to the currently-stored string. | |
6285 | ||
6286 | =cut | |
6287 | */ | |
6288 | ||
79072805 | 6289 | char * |
864dbfa3 | 6290 | Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append) |
79072805 | 6291 | { |
c07a80fd | 6292 | char *rsptr; |
6293 | STRLEN rslen; | |
6294 | register STDCHAR rslast; | |
6295 | register STDCHAR *bp; | |
6296 | register I32 cnt; | |
9c5ffd7c | 6297 | I32 i = 0; |
8bfdd7d9 | 6298 | I32 rspara = 0; |
e311fd51 | 6299 | I32 recsize; |
c07a80fd | 6300 | |
bc44a8a2 NC |
6301 | if (SvTHINKFIRST(sv)) |
6302 | sv_force_normal_flags(sv, append ? 0 : SV_COW_DROP_PV); | |
765f542d NC |
6303 | /* XXX. If you make this PVIV, then copy on write can copy scalars read |
6304 | from <>. | |
6305 | However, perlbench says it's slower, because the existing swipe code | |
6306 | is faster than copy on write. | |
6307 | Swings and roundabouts. */ | |
6fc92669 | 6308 | (void)SvUPGRADE(sv, SVt_PV); |
99491443 | 6309 | |
ff68c719 | 6310 | SvSCREAM_off(sv); |
efd8b2ba AE |
6311 | |
6312 | if (append) { | |
6313 | if (PerlIO_isutf8(fp)) { | |
6314 | if (!SvUTF8(sv)) { | |
6315 | sv_utf8_upgrade_nomg(sv); | |
6316 | sv_pos_u2b(sv,&append,0); | |
6317 | } | |
6318 | } else if (SvUTF8(sv)) { | |
6319 | SV *tsv = NEWSV(0,0); | |
6320 | sv_gets(tsv, fp, 0); | |
6321 | sv_utf8_upgrade_nomg(tsv); | |
6322 | SvCUR_set(sv,append); | |
6323 | sv_catsv(sv,tsv); | |
6324 | sv_free(tsv); | |
6325 | goto return_string_or_null; | |
6326 | } | |
6327 | } | |
6328 | ||
6329 | SvPOK_only(sv); | |
6330 | if (PerlIO_isutf8(fp)) | |
6331 | SvUTF8_on(sv); | |
c07a80fd | 6332 | |
8bfdd7d9 HS |
6333 | if (PL_curcop == &PL_compiling) { |
6334 | /* we always read code in line mode */ | |
6335 | rsptr = "\n"; | |
6336 | rslen = 1; | |
6337 | } | |
6338 | else if (RsSNARF(PL_rs)) { | |
e468d35b NIS |
6339 | /* If it is a regular disk file use size from stat() as estimate |
6340 | of amount we are going to read - may result in malloc-ing | |
6341 | more memory than we realy need if layers bellow reduce | |
6342 | size we read (e.g. CRLF or a gzip layer) | |
6343 | */ | |
e311fd51 | 6344 | Stat_t st; |
e468d35b NIS |
6345 | if (!PerlLIO_fstat(PerlIO_fileno(fp), &st) && S_ISREG(st.st_mode)) { |
6346 | Off_t offset = PerlIO_tell(fp); | |
6347 | if (offset != (Off_t) -1) { | |
6348 | (void) SvGROW(sv, (STRLEN)((st.st_size - offset) + append + 1)); | |
6349 | } | |
6350 | } | |
c07a80fd | 6351 | rsptr = NULL; |
6352 | rslen = 0; | |
6353 | } | |
3280af22 | 6354 | else if (RsRECORD(PL_rs)) { |
e311fd51 | 6355 | I32 bytesread; |
5b2b9c68 HM |
6356 | char *buffer; |
6357 | ||
6358 | /* Grab the size of the record we're getting */ | |
3280af22 | 6359 | recsize = SvIV(SvRV(PL_rs)); |
e311fd51 | 6360 | buffer = SvGROW(sv, (STRLEN)(recsize + append + 1)) + append; |
5b2b9c68 HM |
6361 | /* Go yank in */ |
6362 | #ifdef VMS | |
6363 | /* VMS wants read instead of fread, because fread doesn't respect */ | |
6364 | /* RMS record boundaries. This is not necessarily a good thing to be */ | |
e468d35b NIS |
6365 | /* doing, but we've got no other real choice - except avoid stdio |
6366 | as implementation - perhaps write a :vms layer ? | |
6367 | */ | |
5b2b9c68 HM |
6368 | bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize); |
6369 | #else | |
6370 | bytesread = PerlIO_read(fp, buffer, recsize); | |
6371 | #endif | |
e311fd51 | 6372 | SvCUR_set(sv, bytesread += append); |
e670df4e | 6373 | buffer[bytesread] = '\0'; |
efd8b2ba | 6374 | goto return_string_or_null; |
5b2b9c68 | 6375 | } |
3280af22 | 6376 | else if (RsPARA(PL_rs)) { |
c07a80fd | 6377 | rsptr = "\n\n"; |
6378 | rslen = 2; | |
8bfdd7d9 | 6379 | rspara = 1; |
c07a80fd | 6380 | } |
7d59b7e4 NIS |
6381 | else { |
6382 | /* Get $/ i.e. PL_rs into same encoding as stream wants */ | |
6383 | if (PerlIO_isutf8(fp)) { | |
6384 | rsptr = SvPVutf8(PL_rs, rslen); | |
6385 | } | |
6386 | else { | |
6387 | if (SvUTF8(PL_rs)) { | |
6388 | if (!sv_utf8_downgrade(PL_rs, TRUE)) { | |
6389 | Perl_croak(aTHX_ "Wide character in $/"); | |
6390 | } | |
6391 | } | |
6392 | rsptr = SvPV(PL_rs, rslen); | |
6393 | } | |
6394 | } | |
6395 | ||
c07a80fd | 6396 | rslast = rslen ? rsptr[rslen - 1] : '\0'; |
6397 | ||
8bfdd7d9 | 6398 | if (rspara) { /* have to do this both before and after */ |
79072805 | 6399 | do { /* to make sure file boundaries work right */ |
760ac839 | 6400 | if (PerlIO_eof(fp)) |
a0d0e21e | 6401 | return 0; |
760ac839 | 6402 | i = PerlIO_getc(fp); |
79072805 | 6403 | if (i != '\n') { |
a0d0e21e LW |
6404 | if (i == -1) |
6405 | return 0; | |
760ac839 | 6406 | PerlIO_ungetc(fp,i); |
79072805 LW |
6407 | break; |
6408 | } | |
6409 | } while (i != EOF); | |
6410 | } | |
c07a80fd | 6411 | |
760ac839 LW |
6412 | /* See if we know enough about I/O mechanism to cheat it ! */ |
6413 | ||
6414 | /* This used to be #ifdef test - it is made run-time test for ease | |
1c846c1f | 6415 | of abstracting out stdio interface. One call should be cheap |
760ac839 LW |
6416 | enough here - and may even be a macro allowing compile |
6417 | time optimization. | |
6418 | */ | |
6419 | ||
6420 | if (PerlIO_fast_gets(fp)) { | |
6421 | ||
6422 | /* | |
6423 | * We're going to steal some values from the stdio struct | |
6424 | * and put EVERYTHING in the innermost loop into registers. | |
6425 | */ | |
6426 | register STDCHAR *ptr; | |
6427 | STRLEN bpx; | |
6428 | I32 shortbuffered; | |
6429 | ||
16660edb | 6430 | #if defined(VMS) && defined(PERLIO_IS_STDIO) |
6431 | /* An ungetc()d char is handled separately from the regular | |
6432 | * buffer, so we getc() it back out and stuff it in the buffer. | |
6433 | */ | |
6434 | i = PerlIO_getc(fp); | |
6435 | if (i == EOF) return 0; | |
6436 | *(--((*fp)->_ptr)) = (unsigned char) i; | |
6437 | (*fp)->_cnt++; | |
6438 | #endif | |
c07a80fd | 6439 | |
c2960299 | 6440 | /* Here is some breathtakingly efficient cheating */ |
c07a80fd | 6441 | |
a20bf0c3 | 6442 | cnt = PerlIO_get_cnt(fp); /* get count into register */ |
e468d35b NIS |
6443 | /* make sure we have the room */ |
6444 | if ((I32)(SvLEN(sv) - append) <= cnt + 1) { | |
6445 | /* Not room for all of it | |
6446 | if we are looking for a separator and room for some | |
6447 | */ | |
6448 | if (rslen && cnt > 80 && (I32)SvLEN(sv) > append) { | |
6449 | /* just process what we have room for */ | |
79072805 LW |
6450 | shortbuffered = cnt - SvLEN(sv) + append + 1; |
6451 | cnt -= shortbuffered; | |
6452 | } | |
6453 | else { | |
6454 | shortbuffered = 0; | |
bbce6d69 | 6455 | /* remember that cnt can be negative */ |
eb160463 | 6456 | SvGROW(sv, (STRLEN)(append + (cnt <= 0 ? 2 : (cnt + 1)))); |
79072805 LW |
6457 | } |
6458 | } | |
e468d35b | 6459 | else |
79072805 | 6460 | shortbuffered = 0; |
c07a80fd | 6461 | bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */ |
a20bf0c3 | 6462 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); |
16660edb | 6463 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6464 | "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
16660edb | 6465 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
ba7abf9d | 6466 | "Screamer: entering: PerlIO * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6467 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6468 | PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0))); |
79072805 LW |
6469 | for (;;) { |
6470 | screamer: | |
93a17b20 | 6471 | if (cnt > 0) { |
c07a80fd | 6472 | if (rslen) { |
760ac839 LW |
6473 | while (cnt > 0) { /* this | eat */ |
6474 | cnt--; | |
c07a80fd | 6475 | if ((*bp++ = *ptr++) == rslast) /* really | dust */ |
6476 | goto thats_all_folks; /* screams | sed :-) */ | |
6477 | } | |
6478 | } | |
6479 | else { | |
1c846c1f NIS |
6480 | Copy(ptr, bp, cnt, char); /* this | eat */ |
6481 | bp += cnt; /* screams | dust */ | |
c07a80fd | 6482 | ptr += cnt; /* louder | sed :-) */ |
a5f75d66 | 6483 | cnt = 0; |
93a17b20 | 6484 | } |
79072805 LW |
6485 | } |
6486 | ||
748a9306 | 6487 | if (shortbuffered) { /* oh well, must extend */ |
79072805 LW |
6488 | cnt = shortbuffered; |
6489 | shortbuffered = 0; | |
c07a80fd | 6490 | bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */ |
79072805 LW |
6491 | SvCUR_set(sv, bpx); |
6492 | SvGROW(sv, SvLEN(sv) + append + cnt + 2); | |
c07a80fd | 6493 | bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */ |
79072805 LW |
6494 | continue; |
6495 | } | |
6496 | ||
16660edb | 6497 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 GS |
6498 | "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n", |
6499 | PTR2UV(ptr),(long)cnt)); | |
cc00df79 | 6500 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* deregisterize cnt and ptr */ |
ba7abf9d | 6501 | #if 0 |
16660edb | 6502 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6503 | "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6504 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6505 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 6506 | #endif |
1c846c1f | 6507 | /* This used to call 'filbuf' in stdio form, but as that behaves like |
774d564b | 6508 | getc when cnt <= 0 we use PerlIO_getc here to avoid introducing |
6509 | another abstraction. */ | |
760ac839 | 6510 | i = PerlIO_getc(fp); /* get more characters */ |
ba7abf9d | 6511 | #if 0 |
16660edb | 6512 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6513 | "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6514 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6515 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 6516 | #endif |
a20bf0c3 JH |
6517 | cnt = PerlIO_get_cnt(fp); |
6518 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */ | |
16660edb | 6519 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6520 | "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
79072805 | 6521 | |
748a9306 LW |
6522 | if (i == EOF) /* all done for ever? */ |
6523 | goto thats_really_all_folks; | |
6524 | ||
c07a80fd | 6525 | bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */ |
79072805 LW |
6526 | SvCUR_set(sv, bpx); |
6527 | SvGROW(sv, bpx + cnt + 2); | |
c07a80fd | 6528 | bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */ |
6529 | ||
eb160463 | 6530 | *bp++ = (STDCHAR)i; /* store character from PerlIO_getc */ |
79072805 | 6531 | |
c07a80fd | 6532 | if (rslen && (STDCHAR)i == rslast) /* all done for now? */ |
79072805 | 6533 | goto thats_all_folks; |
79072805 LW |
6534 | } |
6535 | ||
6536 | thats_all_folks: | |
eb160463 | 6537 | if ((rslen > 1 && (STRLEN)(bp - (STDCHAR*)SvPVX(sv)) < rslen) || |
36477c24 | 6538 | memNE((char*)bp - rslen, rsptr, rslen)) |
760ac839 | 6539 | goto screamer; /* go back to the fray */ |
79072805 LW |
6540 | thats_really_all_folks: |
6541 | if (shortbuffered) | |
6542 | cnt += shortbuffered; | |
16660edb | 6543 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6544 | "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
cc00df79 | 6545 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* put these back or we're in trouble */ |
16660edb | 6546 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6547 | "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6548 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6549 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
79072805 | 6550 | *bp = '\0'; |
760ac839 | 6551 | SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */ |
16660edb | 6552 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
fb73857a | 6553 | "Screamer: done, len=%ld, string=|%.*s|\n", |
6554 | (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv))); | |
760ac839 LW |
6555 | } |
6556 | else | |
79072805 | 6557 | { |
4d2c4e07 | 6558 | #ifndef EPOC |
760ac839 | 6559 | /*The big, slow, and stupid way */ |
c07a80fd | 6560 | STDCHAR buf[8192]; |
4d2c4e07 OF |
6561 | #else |
6562 | /* Need to work around EPOC SDK features */ | |
6563 | /* On WINS: MS VC5 generates calls to _chkstk, */ | |
6564 | /* if a `large' stack frame is allocated */ | |
6565 | /* gcc on MARM does not generate calls like these */ | |
6566 | STDCHAR buf[1024]; | |
6567 | #endif | |
79072805 | 6568 | |
760ac839 | 6569 | screamer2: |
c07a80fd | 6570 | if (rslen) { |
760ac839 LW |
6571 | register STDCHAR *bpe = buf + sizeof(buf); |
6572 | bp = buf; | |
eb160463 | 6573 | while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = (STDCHAR)i) != rslast && bp < bpe) |
760ac839 LW |
6574 | ; /* keep reading */ |
6575 | cnt = bp - buf; | |
c07a80fd | 6576 | } |
6577 | else { | |
760ac839 | 6578 | cnt = PerlIO_read(fp,(char*)buf, sizeof(buf)); |
16660edb | 6579 | /* Accomodate broken VAXC compiler, which applies U8 cast to |
6580 | * both args of ?: operator, causing EOF to change into 255 | |
6581 | */ | |
37be0adf | 6582 | if (cnt > 0) |
cbe9e203 JH |
6583 | i = (U8)buf[cnt - 1]; |
6584 | else | |
37be0adf | 6585 | i = EOF; |
c07a80fd | 6586 | } |
79072805 | 6587 | |
cbe9e203 JH |
6588 | if (cnt < 0) |
6589 | cnt = 0; /* we do need to re-set the sv even when cnt <= 0 */ | |
6590 | if (append) | |
6591 | sv_catpvn(sv, (char *) buf, cnt); | |
6592 | else | |
6593 | sv_setpvn(sv, (char *) buf, cnt); | |
c07a80fd | 6594 | |
6595 | if (i != EOF && /* joy */ | |
6596 | (!rslen || | |
6597 | SvCUR(sv) < rslen || | |
36477c24 | 6598 | memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen))) |
79072805 LW |
6599 | { |
6600 | append = -1; | |
63e4d877 CS |
6601 | /* |
6602 | * If we're reading from a TTY and we get a short read, | |
6603 | * indicating that the user hit his EOF character, we need | |
6604 | * to notice it now, because if we try to read from the TTY | |
6605 | * again, the EOF condition will disappear. | |
6606 | * | |
6607 | * The comparison of cnt to sizeof(buf) is an optimization | |
6608 | * that prevents unnecessary calls to feof(). | |
6609 | * | |
6610 | * - jik 9/25/96 | |
6611 | */ | |
6612 | if (!(cnt < sizeof(buf) && PerlIO_eof(fp))) | |
6613 | goto screamer2; | |
79072805 LW |
6614 | } |
6615 | } | |
6616 | ||
8bfdd7d9 | 6617 | if (rspara) { /* have to do this both before and after */ |
c07a80fd | 6618 | while (i != EOF) { /* to make sure file boundaries work right */ |
760ac839 | 6619 | i = PerlIO_getc(fp); |
79072805 | 6620 | if (i != '\n') { |
760ac839 | 6621 | PerlIO_ungetc(fp,i); |
79072805 LW |
6622 | break; |
6623 | } | |
6624 | } | |
6625 | } | |
c07a80fd | 6626 | |
efd8b2ba | 6627 | return_string_or_null: |
c07a80fd | 6628 | return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch; |
79072805 LW |
6629 | } |
6630 | ||
954c1994 GS |
6631 | /* |
6632 | =for apidoc sv_inc | |
6633 | ||
645c22ef DM |
6634 | Auto-increment of the value in the SV, doing string to numeric conversion |
6635 | if necessary. Handles 'get' magic. | |
954c1994 GS |
6636 | |
6637 | =cut | |
6638 | */ | |
6639 | ||
79072805 | 6640 | void |
864dbfa3 | 6641 | Perl_sv_inc(pTHX_ register SV *sv) |
79072805 LW |
6642 | { |
6643 | register char *d; | |
463ee0b2 | 6644 | int flags; |
79072805 LW |
6645 | |
6646 | if (!sv) | |
6647 | return; | |
b23a5f78 GB |
6648 | if (SvGMAGICAL(sv)) |
6649 | mg_get(sv); | |
ed6116ce | 6650 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
6651 | if (SvIsCOW(sv)) |
6652 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 6653 | if (SvREADONLY(sv)) { |
3280af22 | 6654 | if (PL_curcop != &PL_compiling) |
cea2e8a9 | 6655 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 6656 | } |
a0d0e21e | 6657 | if (SvROK(sv)) { |
b5be31e9 | 6658 | IV i; |
9e7bc3e8 JD |
6659 | if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) |
6660 | return; | |
56431972 | 6661 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
6662 | sv_unref(sv); |
6663 | sv_setiv(sv, i); | |
a0d0e21e | 6664 | } |
ed6116ce | 6665 | } |
8990e307 | 6666 | flags = SvFLAGS(sv); |
28e5dec8 JH |
6667 | if ((flags & (SVp_NOK|SVp_IOK)) == SVp_NOK) { |
6668 | /* It's (privately or publicly) a float, but not tested as an | |
6669 | integer, so test it to see. */ | |
d460ef45 | 6670 | (void) SvIV(sv); |
28e5dec8 JH |
6671 | flags = SvFLAGS(sv); |
6672 | } | |
6673 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { | |
6674 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 6675 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 6676 | oops_its_int: |
59d8ce62 | 6677 | #endif |
25da4f38 IZ |
6678 | if (SvIsUV(sv)) { |
6679 | if (SvUVX(sv) == UV_MAX) | |
a1e868e7 | 6680 | sv_setnv(sv, UV_MAX_P1); |
25da4f38 IZ |
6681 | else |
6682 | (void)SvIOK_only_UV(sv); | |
6683 | ++SvUVX(sv); | |
6684 | } else { | |
6685 | if (SvIVX(sv) == IV_MAX) | |
28e5dec8 | 6686 | sv_setuv(sv, (UV)IV_MAX + 1); |
25da4f38 IZ |
6687 | else { |
6688 | (void)SvIOK_only(sv); | |
6689 | ++SvIVX(sv); | |
1c846c1f | 6690 | } |
55497cff | 6691 | } |
79072805 LW |
6692 | return; |
6693 | } | |
28e5dec8 JH |
6694 | if (flags & SVp_NOK) { |
6695 | (void)SvNOK_only(sv); | |
6696 | SvNVX(sv) += 1.0; | |
6697 | return; | |
6698 | } | |
6699 | ||
8990e307 | 6700 | if (!(flags & SVp_POK) || !*SvPVX(sv)) { |
28e5dec8 JH |
6701 | if ((flags & SVTYPEMASK) < SVt_PVIV) |
6702 | sv_upgrade(sv, SVt_IV); | |
6703 | (void)SvIOK_only(sv); | |
6704 | SvIVX(sv) = 1; | |
79072805 LW |
6705 | return; |
6706 | } | |
463ee0b2 | 6707 | d = SvPVX(sv); |
79072805 LW |
6708 | while (isALPHA(*d)) d++; |
6709 | while (isDIGIT(*d)) d++; | |
6710 | if (*d) { | |
28e5dec8 | 6711 | #ifdef PERL_PRESERVE_IVUV |
d1be9408 | 6712 | /* Got to punt this as an integer if needs be, but we don't issue |
28e5dec8 JH |
6713 | warnings. Probably ought to make the sv_iv_please() that does |
6714 | the conversion if possible, and silently. */ | |
c2988b20 | 6715 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
6716 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
6717 | /* Need to try really hard to see if it's an integer. | |
6718 | 9.22337203685478e+18 is an integer. | |
6719 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
6720 | so $a="9.22337203685478e+18"; $a+0; $a++ | |
6721 | needs to be the same as $a="9.22337203685478e+18"; $a++ | |
6722 | or we go insane. */ | |
d460ef45 | 6723 | |
28e5dec8 JH |
6724 | (void) sv_2iv(sv); |
6725 | if (SvIOK(sv)) | |
6726 | goto oops_its_int; | |
6727 | ||
6728 | /* sv_2iv *should* have made this an NV */ | |
6729 | if (flags & SVp_NOK) { | |
6730 | (void)SvNOK_only(sv); | |
6731 | SvNVX(sv) += 1.0; | |
6732 | return; | |
6733 | } | |
6734 | /* I don't think we can get here. Maybe I should assert this | |
6735 | And if we do get here I suspect that sv_setnv will croak. NWC | |
6736 | Fall through. */ | |
6737 | #if defined(USE_LONG_DOUBLE) | |
6738 | 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", | |
6739 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); | |
6740 | #else | |
1779d84d | 6741 | 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 |
6742 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); |
6743 | #endif | |
6744 | } | |
6745 | #endif /* PERL_PRESERVE_IVUV */ | |
6746 | sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); | |
79072805 LW |
6747 | return; |
6748 | } | |
6749 | d--; | |
463ee0b2 | 6750 | while (d >= SvPVX(sv)) { |
79072805 LW |
6751 | if (isDIGIT(*d)) { |
6752 | if (++*d <= '9') | |
6753 | return; | |
6754 | *(d--) = '0'; | |
6755 | } | |
6756 | else { | |
9d116dd7 JH |
6757 | #ifdef EBCDIC |
6758 | /* MKS: The original code here died if letters weren't consecutive. | |
6759 | * at least it didn't have to worry about non-C locales. The | |
6760 | * new code assumes that ('z'-'a')==('Z'-'A'), letters are | |
1c846c1f | 6761 | * arranged in order (although not consecutively) and that only |
9d116dd7 JH |
6762 | * [A-Za-z] are accepted by isALPHA in the C locale. |
6763 | */ | |
6764 | if (*d != 'z' && *d != 'Z') { | |
6765 | do { ++*d; } while (!isALPHA(*d)); | |
6766 | return; | |
6767 | } | |
6768 | *(d--) -= 'z' - 'a'; | |
6769 | #else | |
79072805 LW |
6770 | ++*d; |
6771 | if (isALPHA(*d)) | |
6772 | return; | |
6773 | *(d--) -= 'z' - 'a' + 1; | |
9d116dd7 | 6774 | #endif |
79072805 LW |
6775 | } |
6776 | } | |
6777 | /* oh,oh, the number grew */ | |
6778 | SvGROW(sv, SvCUR(sv) + 2); | |
6779 | SvCUR(sv)++; | |
463ee0b2 | 6780 | for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--) |
79072805 LW |
6781 | *d = d[-1]; |
6782 | if (isDIGIT(d[1])) | |
6783 | *d = '1'; | |
6784 | else | |
6785 | *d = d[1]; | |
6786 | } | |
6787 | ||
954c1994 GS |
6788 | /* |
6789 | =for apidoc sv_dec | |
6790 | ||
645c22ef DM |
6791 | Auto-decrement of the value in the SV, doing string to numeric conversion |
6792 | if necessary. Handles 'get' magic. | |
954c1994 GS |
6793 | |
6794 | =cut | |
6795 | */ | |
6796 | ||
79072805 | 6797 | void |
864dbfa3 | 6798 | Perl_sv_dec(pTHX_ register SV *sv) |
79072805 | 6799 | { |
463ee0b2 LW |
6800 | int flags; |
6801 | ||
79072805 LW |
6802 | if (!sv) |
6803 | return; | |
b23a5f78 GB |
6804 | if (SvGMAGICAL(sv)) |
6805 | mg_get(sv); | |
ed6116ce | 6806 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
6807 | if (SvIsCOW(sv)) |
6808 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 6809 | if (SvREADONLY(sv)) { |
3280af22 | 6810 | if (PL_curcop != &PL_compiling) |
cea2e8a9 | 6811 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 6812 | } |
a0d0e21e | 6813 | if (SvROK(sv)) { |
b5be31e9 | 6814 | IV i; |
9e7bc3e8 JD |
6815 | if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) |
6816 | return; | |
56431972 | 6817 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
6818 | sv_unref(sv); |
6819 | sv_setiv(sv, i); | |
a0d0e21e | 6820 | } |
ed6116ce | 6821 | } |
28e5dec8 JH |
6822 | /* Unlike sv_inc we don't have to worry about string-never-numbers |
6823 | and keeping them magic. But we mustn't warn on punting */ | |
8990e307 | 6824 | flags = SvFLAGS(sv); |
28e5dec8 JH |
6825 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { |
6826 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 6827 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 6828 | oops_its_int: |
59d8ce62 | 6829 | #endif |
25da4f38 IZ |
6830 | if (SvIsUV(sv)) { |
6831 | if (SvUVX(sv) == 0) { | |
6832 | (void)SvIOK_only(sv); | |
6833 | SvIVX(sv) = -1; | |
6834 | } | |
6835 | else { | |
6836 | (void)SvIOK_only_UV(sv); | |
6837 | --SvUVX(sv); | |
1c846c1f | 6838 | } |
25da4f38 IZ |
6839 | } else { |
6840 | if (SvIVX(sv) == IV_MIN) | |
65202027 | 6841 | sv_setnv(sv, (NV)IV_MIN - 1.0); |
25da4f38 IZ |
6842 | else { |
6843 | (void)SvIOK_only(sv); | |
6844 | --SvIVX(sv); | |
1c846c1f | 6845 | } |
55497cff | 6846 | } |
6847 | return; | |
6848 | } | |
28e5dec8 JH |
6849 | if (flags & SVp_NOK) { |
6850 | SvNVX(sv) -= 1.0; | |
6851 | (void)SvNOK_only(sv); | |
6852 | return; | |
6853 | } | |
8990e307 | 6854 | if (!(flags & SVp_POK)) { |
4633a7c4 LW |
6855 | if ((flags & SVTYPEMASK) < SVt_PVNV) |
6856 | sv_upgrade(sv, SVt_NV); | |
463ee0b2 | 6857 | SvNVX(sv) = -1.0; |
a0d0e21e | 6858 | (void)SvNOK_only(sv); |
79072805 LW |
6859 | return; |
6860 | } | |
28e5dec8 JH |
6861 | #ifdef PERL_PRESERVE_IVUV |
6862 | { | |
c2988b20 | 6863 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
6864 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
6865 | /* Need to try really hard to see if it's an integer. | |
6866 | 9.22337203685478e+18 is an integer. | |
6867 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
6868 | so $a="9.22337203685478e+18"; $a+0; $a-- | |
6869 | needs to be the same as $a="9.22337203685478e+18"; $a-- | |
6870 | or we go insane. */ | |
d460ef45 | 6871 | |
28e5dec8 JH |
6872 | (void) sv_2iv(sv); |
6873 | if (SvIOK(sv)) | |
6874 | goto oops_its_int; | |
6875 | ||
6876 | /* sv_2iv *should* have made this an NV */ | |
6877 | if (flags & SVp_NOK) { | |
6878 | (void)SvNOK_only(sv); | |
6879 | SvNVX(sv) -= 1.0; | |
6880 | return; | |
6881 | } | |
6882 | /* I don't think we can get here. Maybe I should assert this | |
6883 | And if we do get here I suspect that sv_setnv will croak. NWC | |
6884 | Fall through. */ | |
6885 | #if defined(USE_LONG_DOUBLE) | |
6886 | 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", | |
6887 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); | |
6888 | #else | |
1779d84d | 6889 | 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 |
6890 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); |
6891 | #endif | |
6892 | } | |
6893 | } | |
6894 | #endif /* PERL_PRESERVE_IVUV */ | |
097ee67d | 6895 | sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */ |
79072805 LW |
6896 | } |
6897 | ||
954c1994 GS |
6898 | /* |
6899 | =for apidoc sv_mortalcopy | |
6900 | ||
645c22ef | 6901 | Creates a new SV which is a copy of the original SV (using C<sv_setsv>). |
d4236ebc DM |
6902 | The new SV is marked as mortal. It will be destroyed "soon", either by an |
6903 | explicit call to FREETMPS, or by an implicit call at places such as | |
6904 | statement boundaries. See also C<sv_newmortal> and C<sv_2mortal>. | |
954c1994 GS |
6905 | |
6906 | =cut | |
6907 | */ | |
6908 | ||
79072805 LW |
6909 | /* Make a string that will exist for the duration of the expression |
6910 | * evaluation. Actually, it may have to last longer than that, but | |
6911 | * hopefully we won't free it until it has been assigned to a | |
6912 | * permanent location. */ | |
6913 | ||
6914 | SV * | |
864dbfa3 | 6915 | Perl_sv_mortalcopy(pTHX_ SV *oldstr) |
79072805 | 6916 | { |
463ee0b2 | 6917 | register SV *sv; |
b881518d | 6918 | |
4561caa4 | 6919 | new_SV(sv); |
79072805 | 6920 | sv_setsv(sv,oldstr); |
677b06e3 GS |
6921 | EXTEND_MORTAL(1); |
6922 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 LW |
6923 | SvTEMP_on(sv); |
6924 | return sv; | |
6925 | } | |
6926 | ||
954c1994 GS |
6927 | /* |
6928 | =for apidoc sv_newmortal | |
6929 | ||
645c22ef | 6930 | Creates a new null SV which is mortal. The reference count of the SV is |
d4236ebc DM |
6931 | set to 1. It will be destroyed "soon", either by an explicit call to |
6932 | FREETMPS, or by an implicit call at places such as statement boundaries. | |
6933 | See also C<sv_mortalcopy> and C<sv_2mortal>. | |
954c1994 GS |
6934 | |
6935 | =cut | |
6936 | */ | |
6937 | ||
8990e307 | 6938 | SV * |
864dbfa3 | 6939 | Perl_sv_newmortal(pTHX) |
8990e307 LW |
6940 | { |
6941 | register SV *sv; | |
6942 | ||
4561caa4 | 6943 | new_SV(sv); |
8990e307 | 6944 | SvFLAGS(sv) = SVs_TEMP; |
677b06e3 GS |
6945 | EXTEND_MORTAL(1); |
6946 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
79072805 LW |
6947 | return sv; |
6948 | } | |
6949 | ||
954c1994 GS |
6950 | /* |
6951 | =for apidoc sv_2mortal | |
6952 | ||
d4236ebc DM |
6953 | Marks an existing SV as mortal. The SV will be destroyed "soon", either |
6954 | by an explicit call to FREETMPS, or by an implicit call at places such as | |
6955 | statement boundaries. See also C<sv_newmortal> and C<sv_mortalcopy>. | |
954c1994 GS |
6956 | |
6957 | =cut | |
6958 | */ | |
6959 | ||
79072805 | 6960 | SV * |
864dbfa3 | 6961 | Perl_sv_2mortal(pTHX_ register SV *sv) |
79072805 LW |
6962 | { |
6963 | if (!sv) | |
6964 | return sv; | |
d689ffdd | 6965 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) |
11162842 | 6966 | return sv; |
677b06e3 GS |
6967 | EXTEND_MORTAL(1); |
6968 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 | 6969 | SvTEMP_on(sv); |
79072805 LW |
6970 | return sv; |
6971 | } | |
6972 | ||
954c1994 GS |
6973 | /* |
6974 | =for apidoc newSVpv | |
6975 | ||
6976 | Creates a new SV and copies a string into it. The reference count for the | |
6977 | SV is set to 1. If C<len> is zero, Perl will compute the length using | |
6978 | strlen(). For efficiency, consider using C<newSVpvn> instead. | |
6979 | ||
6980 | =cut | |
6981 | */ | |
6982 | ||
79072805 | 6983 | SV * |
864dbfa3 | 6984 | Perl_newSVpv(pTHX_ const char *s, STRLEN len) |
79072805 | 6985 | { |
463ee0b2 | 6986 | register SV *sv; |
79072805 | 6987 | |
4561caa4 | 6988 | new_SV(sv); |
79072805 LW |
6989 | if (!len) |
6990 | len = strlen(s); | |
6991 | sv_setpvn(sv,s,len); | |
6992 | return sv; | |
6993 | } | |
6994 | ||
954c1994 GS |
6995 | /* |
6996 | =for apidoc newSVpvn | |
6997 | ||
6998 | Creates a new SV and copies a string into it. The reference count for the | |
1c846c1f | 6999 | SV is set to 1. Note that if C<len> is zero, Perl will create a zero length |
954c1994 GS |
7000 | string. You are responsible for ensuring that the source string is at least |
7001 | C<len> bytes long. | |
7002 | ||
7003 | =cut | |
7004 | */ | |
7005 | ||
9da1e3b5 | 7006 | SV * |
864dbfa3 | 7007 | Perl_newSVpvn(pTHX_ const char *s, STRLEN len) |
9da1e3b5 MUN |
7008 | { |
7009 | register SV *sv; | |
7010 | ||
7011 | new_SV(sv); | |
9da1e3b5 MUN |
7012 | sv_setpvn(sv,s,len); |
7013 | return sv; | |
7014 | } | |
7015 | ||
1c846c1f NIS |
7016 | /* |
7017 | =for apidoc newSVpvn_share | |
7018 | ||
645c22ef DM |
7019 | Creates a new SV with its SvPVX pointing to a shared string in the string |
7020 | table. If the string does not already exist in the table, it is created | |
7021 | first. Turns on READONLY and FAKE. The string's hash is stored in the UV | |
7022 | slot of the SV; if the C<hash> parameter is non-zero, that value is used; | |
7023 | otherwise the hash is computed. The idea here is that as the string table | |
7024 | is used for shared hash keys these strings will have SvPVX == HeKEY and | |
7025 | hash lookup will avoid string compare. | |
1c846c1f NIS |
7026 | |
7027 | =cut | |
7028 | */ | |
7029 | ||
7030 | SV * | |
c3654f1a | 7031 | Perl_newSVpvn_share(pTHX_ const char *src, I32 len, U32 hash) |
1c846c1f NIS |
7032 | { |
7033 | register SV *sv; | |
c3654f1a IH |
7034 | bool is_utf8 = FALSE; |
7035 | if (len < 0) { | |
77caf834 | 7036 | STRLEN tmplen = -len; |
c3654f1a | 7037 | is_utf8 = TRUE; |
75a54232 JH |
7038 | /* See the note in hv.c:hv_fetch() --jhi */ |
7039 | src = (char*)bytes_from_utf8((U8*)src, &tmplen, &is_utf8); | |
7040 | len = tmplen; | |
7041 | } | |
1c846c1f | 7042 | if (!hash) |
5afd6d42 | 7043 | PERL_HASH(hash, src, len); |
1c846c1f NIS |
7044 | new_SV(sv); |
7045 | sv_upgrade(sv, SVt_PVIV); | |
c3654f1a | 7046 | SvPVX(sv) = sharepvn(src, is_utf8?-len:len, hash); |
1c846c1f NIS |
7047 | SvCUR(sv) = len; |
7048 | SvUVX(sv) = hash; | |
7049 | SvLEN(sv) = 0; | |
7050 | SvREADONLY_on(sv); | |
7051 | SvFAKE_on(sv); | |
7052 | SvPOK_on(sv); | |
c3654f1a IH |
7053 | if (is_utf8) |
7054 | SvUTF8_on(sv); | |
1c846c1f NIS |
7055 | return sv; |
7056 | } | |
7057 | ||
645c22ef | 7058 | |
cea2e8a9 | 7059 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
7060 | |
7061 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
7062 | * version of the main function, (which may itself be aliased to us). | |
7063 | * Don't access this version directly. | |
7064 | */ | |
7065 | ||
46fc3d4c | 7066 | SV * |
cea2e8a9 | 7067 | Perl_newSVpvf_nocontext(const char* pat, ...) |
46fc3d4c | 7068 | { |
cea2e8a9 | 7069 | dTHX; |
46fc3d4c | 7070 | register SV *sv; |
7071 | va_list args; | |
46fc3d4c | 7072 | va_start(args, pat); |
c5be433b | 7073 | sv = vnewSVpvf(pat, &args); |
46fc3d4c | 7074 | va_end(args); |
7075 | return sv; | |
7076 | } | |
cea2e8a9 | 7077 | #endif |
46fc3d4c | 7078 | |
954c1994 GS |
7079 | /* |
7080 | =for apidoc newSVpvf | |
7081 | ||
645c22ef | 7082 | Creates a new SV and initializes it with the string formatted like |
954c1994 GS |
7083 | C<sprintf>. |
7084 | ||
7085 | =cut | |
7086 | */ | |
7087 | ||
cea2e8a9 GS |
7088 | SV * |
7089 | Perl_newSVpvf(pTHX_ const char* pat, ...) | |
7090 | { | |
7091 | register SV *sv; | |
7092 | va_list args; | |
cea2e8a9 | 7093 | va_start(args, pat); |
c5be433b | 7094 | sv = vnewSVpvf(pat, &args); |
cea2e8a9 GS |
7095 | va_end(args); |
7096 | return sv; | |
7097 | } | |
46fc3d4c | 7098 | |
645c22ef DM |
7099 | /* backend for newSVpvf() and newSVpvf_nocontext() */ |
7100 | ||
79072805 | 7101 | SV * |
c5be433b GS |
7102 | Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args) |
7103 | { | |
7104 | register SV *sv; | |
7105 | new_SV(sv); | |
7106 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
7107 | return sv; | |
7108 | } | |
7109 | ||
954c1994 GS |
7110 | /* |
7111 | =for apidoc newSVnv | |
7112 | ||
7113 | Creates a new SV and copies a floating point value into it. | |
7114 | The reference count for the SV is set to 1. | |
7115 | ||
7116 | =cut | |
7117 | */ | |
7118 | ||
c5be433b | 7119 | SV * |
65202027 | 7120 | Perl_newSVnv(pTHX_ NV n) |
79072805 | 7121 | { |
463ee0b2 | 7122 | register SV *sv; |
79072805 | 7123 | |
4561caa4 | 7124 | new_SV(sv); |
79072805 LW |
7125 | sv_setnv(sv,n); |
7126 | return sv; | |
7127 | } | |
7128 | ||
954c1994 GS |
7129 | /* |
7130 | =for apidoc newSViv | |
7131 | ||
7132 | Creates a new SV and copies an integer into it. The reference count for the | |
7133 | SV is set to 1. | |
7134 | ||
7135 | =cut | |
7136 | */ | |
7137 | ||
79072805 | 7138 | SV * |
864dbfa3 | 7139 | Perl_newSViv(pTHX_ IV i) |
79072805 | 7140 | { |
463ee0b2 | 7141 | register SV *sv; |
79072805 | 7142 | |
4561caa4 | 7143 | new_SV(sv); |
79072805 LW |
7144 | sv_setiv(sv,i); |
7145 | return sv; | |
7146 | } | |
7147 | ||
954c1994 | 7148 | /* |
1a3327fb JH |
7149 | =for apidoc newSVuv |
7150 | ||
7151 | Creates a new SV and copies an unsigned integer into it. | |
7152 | The reference count for the SV is set to 1. | |
7153 | ||
7154 | =cut | |
7155 | */ | |
7156 | ||
7157 | SV * | |
7158 | Perl_newSVuv(pTHX_ UV u) | |
7159 | { | |
7160 | register SV *sv; | |
7161 | ||
7162 | new_SV(sv); | |
7163 | sv_setuv(sv,u); | |
7164 | return sv; | |
7165 | } | |
7166 | ||
7167 | /* | |
954c1994 GS |
7168 | =for apidoc newRV_noinc |
7169 | ||
7170 | Creates an RV wrapper for an SV. The reference count for the original | |
7171 | SV is B<not> incremented. | |
7172 | ||
7173 | =cut | |
7174 | */ | |
7175 | ||
2304df62 | 7176 | SV * |
864dbfa3 | 7177 | Perl_newRV_noinc(pTHX_ SV *tmpRef) |
2304df62 AD |
7178 | { |
7179 | register SV *sv; | |
7180 | ||
4561caa4 | 7181 | new_SV(sv); |
2304df62 | 7182 | sv_upgrade(sv, SVt_RV); |
76e3520e | 7183 | SvTEMP_off(tmpRef); |
d689ffdd | 7184 | SvRV(sv) = tmpRef; |
2304df62 | 7185 | SvROK_on(sv); |
2304df62 AD |
7186 | return sv; |
7187 | } | |
7188 | ||
ff276b08 | 7189 | /* newRV_inc is the official function name to use now. |
645c22ef DM |
7190 | * newRV_inc is in fact #defined to newRV in sv.h |
7191 | */ | |
7192 | ||
5f05dabc | 7193 | SV * |
864dbfa3 | 7194 | Perl_newRV(pTHX_ SV *tmpRef) |
5f05dabc | 7195 | { |
5f6447b6 | 7196 | return newRV_noinc(SvREFCNT_inc(tmpRef)); |
5f05dabc | 7197 | } |
5f05dabc | 7198 | |
954c1994 GS |
7199 | /* |
7200 | =for apidoc newSVsv | |
7201 | ||
7202 | Creates a new SV which is an exact duplicate of the original SV. | |
645c22ef | 7203 | (Uses C<sv_setsv>). |
954c1994 GS |
7204 | |
7205 | =cut | |
7206 | */ | |
7207 | ||
79072805 | 7208 | SV * |
864dbfa3 | 7209 | Perl_newSVsv(pTHX_ register SV *old) |
79072805 | 7210 | { |
463ee0b2 | 7211 | register SV *sv; |
79072805 LW |
7212 | |
7213 | if (!old) | |
7214 | return Nullsv; | |
8990e307 | 7215 | if (SvTYPE(old) == SVTYPEMASK) { |
0453d815 | 7216 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 7217 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "semi-panic: attempt to dup freed string"); |
79072805 LW |
7218 | return Nullsv; |
7219 | } | |
4561caa4 | 7220 | new_SV(sv); |
ff68c719 | 7221 | if (SvTEMP(old)) { |
7222 | SvTEMP_off(old); | |
463ee0b2 | 7223 | sv_setsv(sv,old); |
ff68c719 | 7224 | SvTEMP_on(old); |
79072805 LW |
7225 | } |
7226 | else | |
463ee0b2 LW |
7227 | sv_setsv(sv,old); |
7228 | return sv; | |
79072805 LW |
7229 | } |
7230 | ||
645c22ef DM |
7231 | /* |
7232 | =for apidoc sv_reset | |
7233 | ||
7234 | Underlying implementation for the C<reset> Perl function. | |
7235 | Note that the perl-level function is vaguely deprecated. | |
7236 | ||
7237 | =cut | |
7238 | */ | |
7239 | ||
79072805 | 7240 | void |
864dbfa3 | 7241 | Perl_sv_reset(pTHX_ register char *s, HV *stash) |
79072805 LW |
7242 | { |
7243 | register HE *entry; | |
7244 | register GV *gv; | |
7245 | register SV *sv; | |
7246 | register I32 i; | |
7247 | register PMOP *pm; | |
7248 | register I32 max; | |
4802d5d7 | 7249 | char todo[PERL_UCHAR_MAX+1]; |
79072805 | 7250 | |
49d8d3a1 MB |
7251 | if (!stash) |
7252 | return; | |
7253 | ||
79072805 LW |
7254 | if (!*s) { /* reset ?? searches */ |
7255 | for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) { | |
48c036b1 | 7256 | pm->op_pmdynflags &= ~PMdf_USED; |
79072805 LW |
7257 | } |
7258 | return; | |
7259 | } | |
7260 | ||
7261 | /* reset variables */ | |
7262 | ||
7263 | if (!HvARRAY(stash)) | |
7264 | return; | |
463ee0b2 LW |
7265 | |
7266 | Zero(todo, 256, char); | |
79072805 | 7267 | while (*s) { |
4802d5d7 | 7268 | i = (unsigned char)*s; |
79072805 LW |
7269 | if (s[1] == '-') { |
7270 | s += 2; | |
7271 | } | |
4802d5d7 | 7272 | max = (unsigned char)*s++; |
79072805 | 7273 | for ( ; i <= max; i++) { |
463ee0b2 LW |
7274 | todo[i] = 1; |
7275 | } | |
a0d0e21e | 7276 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
79072805 | 7277 | for (entry = HvARRAY(stash)[i]; |
9e35f4b3 GS |
7278 | entry; |
7279 | entry = HeNEXT(entry)) | |
7280 | { | |
1edc1566 | 7281 | if (!todo[(U8)*HeKEY(entry)]) |
463ee0b2 | 7282 | continue; |
1edc1566 | 7283 | gv = (GV*)HeVAL(entry); |
79072805 | 7284 | sv = GvSV(gv); |
9e35f4b3 GS |
7285 | if (SvTHINKFIRST(sv)) { |
7286 | if (!SvREADONLY(sv) && SvROK(sv)) | |
7287 | sv_unref(sv); | |
7288 | continue; | |
7289 | } | |
a0d0e21e | 7290 | (void)SvOK_off(sv); |
79072805 LW |
7291 | if (SvTYPE(sv) >= SVt_PV) { |
7292 | SvCUR_set(sv, 0); | |
463ee0b2 LW |
7293 | if (SvPVX(sv) != Nullch) |
7294 | *SvPVX(sv) = '\0'; | |
44a8e56a | 7295 | SvTAINT(sv); |
79072805 LW |
7296 | } |
7297 | if (GvAV(gv)) { | |
7298 | av_clear(GvAV(gv)); | |
7299 | } | |
44a8e56a | 7300 | if (GvHV(gv) && !HvNAME(GvHV(gv))) { |
463ee0b2 | 7301 | hv_clear(GvHV(gv)); |
fa6a1c44 | 7302 | #ifdef USE_ENVIRON_ARRAY |
4efc5df6 GS |
7303 | if (gv == PL_envgv |
7304 | # ifdef USE_ITHREADS | |
7305 | && PL_curinterp == aTHX | |
7306 | # endif | |
7307 | ) | |
7308 | { | |
79072805 | 7309 | environ[0] = Nullch; |
4efc5df6 | 7310 | } |
a0d0e21e | 7311 | #endif |
79072805 LW |
7312 | } |
7313 | } | |
7314 | } | |
7315 | } | |
7316 | } | |
7317 | ||
645c22ef DM |
7318 | /* |
7319 | =for apidoc sv_2io | |
7320 | ||
7321 | Using various gambits, try to get an IO from an SV: the IO slot if its a | |
7322 | GV; or the recursive result if we're an RV; or the IO slot of the symbol | |
7323 | named after the PV if we're a string. | |
7324 | ||
7325 | =cut | |
7326 | */ | |
7327 | ||
46fc3d4c | 7328 | IO* |
864dbfa3 | 7329 | Perl_sv_2io(pTHX_ SV *sv) |
46fc3d4c | 7330 | { |
7331 | IO* io; | |
7332 | GV* gv; | |
2d8e6c8d | 7333 | STRLEN n_a; |
46fc3d4c | 7334 | |
7335 | switch (SvTYPE(sv)) { | |
7336 | case SVt_PVIO: | |
7337 | io = (IO*)sv; | |
7338 | break; | |
7339 | case SVt_PVGV: | |
7340 | gv = (GV*)sv; | |
7341 | io = GvIO(gv); | |
7342 | if (!io) | |
cea2e8a9 | 7343 | Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv)); |
46fc3d4c | 7344 | break; |
7345 | default: | |
7346 | if (!SvOK(sv)) | |
cea2e8a9 | 7347 | Perl_croak(aTHX_ PL_no_usym, "filehandle"); |
46fc3d4c | 7348 | if (SvROK(sv)) |
7349 | return sv_2io(SvRV(sv)); | |
2d8e6c8d | 7350 | gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO); |
46fc3d4c | 7351 | if (gv) |
7352 | io = GvIO(gv); | |
7353 | else | |
7354 | io = 0; | |
7355 | if (!io) | |
35c1215d | 7356 | Perl_croak(aTHX_ "Bad filehandle: %"SVf, sv); |
46fc3d4c | 7357 | break; |
7358 | } | |
7359 | return io; | |
7360 | } | |
7361 | ||
645c22ef DM |
7362 | /* |
7363 | =for apidoc sv_2cv | |
7364 | ||
7365 | Using various gambits, try to get a CV from an SV; in addition, try if | |
7366 | possible to set C<*st> and C<*gvp> to the stash and GV associated with it. | |
7367 | ||
7368 | =cut | |
7369 | */ | |
7370 | ||
79072805 | 7371 | CV * |
864dbfa3 | 7372 | Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref) |
79072805 | 7373 | { |
c04a4dfe JH |
7374 | GV *gv = Nullgv; |
7375 | CV *cv = Nullcv; | |
2d8e6c8d | 7376 | STRLEN n_a; |
79072805 LW |
7377 | |
7378 | if (!sv) | |
93a17b20 | 7379 | return *gvp = Nullgv, Nullcv; |
79072805 | 7380 | switch (SvTYPE(sv)) { |
79072805 LW |
7381 | case SVt_PVCV: |
7382 | *st = CvSTASH(sv); | |
7383 | *gvp = Nullgv; | |
7384 | return (CV*)sv; | |
7385 | case SVt_PVHV: | |
7386 | case SVt_PVAV: | |
7387 | *gvp = Nullgv; | |
7388 | return Nullcv; | |
8990e307 LW |
7389 | case SVt_PVGV: |
7390 | gv = (GV*)sv; | |
a0d0e21e | 7391 | *gvp = gv; |
8990e307 LW |
7392 | *st = GvESTASH(gv); |
7393 | goto fix_gv; | |
7394 | ||
79072805 | 7395 | default: |
a0d0e21e LW |
7396 | if (SvGMAGICAL(sv)) |
7397 | mg_get(sv); | |
7398 | if (SvROK(sv)) { | |
f5284f61 IZ |
7399 | SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */ |
7400 | tryAMAGICunDEREF(to_cv); | |
7401 | ||
62f274bf GS |
7402 | sv = SvRV(sv); |
7403 | if (SvTYPE(sv) == SVt_PVCV) { | |
7404 | cv = (CV*)sv; | |
7405 | *gvp = Nullgv; | |
7406 | *st = CvSTASH(cv); | |
7407 | return cv; | |
7408 | } | |
7409 | else if(isGV(sv)) | |
7410 | gv = (GV*)sv; | |
7411 | else | |
cea2e8a9 | 7412 | Perl_croak(aTHX_ "Not a subroutine reference"); |
a0d0e21e | 7413 | } |
62f274bf | 7414 | else if (isGV(sv)) |
79072805 LW |
7415 | gv = (GV*)sv; |
7416 | else | |
2d8e6c8d | 7417 | gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV); |
79072805 LW |
7418 | *gvp = gv; |
7419 | if (!gv) | |
7420 | return Nullcv; | |
7421 | *st = GvESTASH(gv); | |
8990e307 | 7422 | fix_gv: |
8ebc5c01 | 7423 | if (lref && !GvCVu(gv)) { |
4633a7c4 | 7424 | SV *tmpsv; |
748a9306 | 7425 | ENTER; |
4633a7c4 | 7426 | tmpsv = NEWSV(704,0); |
16660edb | 7427 | gv_efullname3(tmpsv, gv, Nullch); |
f6ec51f7 GS |
7428 | /* XXX this is probably not what they think they're getting. |
7429 | * It has the same effect as "sub name;", i.e. just a forward | |
7430 | * declaration! */ | |
774d564b | 7431 | newSUB(start_subparse(FALSE, 0), |
4633a7c4 LW |
7432 | newSVOP(OP_CONST, 0, tmpsv), |
7433 | Nullop, | |
8990e307 | 7434 | Nullop); |
748a9306 | 7435 | LEAVE; |
8ebc5c01 | 7436 | if (!GvCVu(gv)) |
35c1215d NC |
7437 | Perl_croak(aTHX_ "Unable to create sub named \"%"SVf"\"", |
7438 | sv); | |
8990e307 | 7439 | } |
8ebc5c01 | 7440 | return GvCVu(gv); |
79072805 LW |
7441 | } |
7442 | } | |
7443 | ||
c461cf8f JH |
7444 | /* |
7445 | =for apidoc sv_true | |
7446 | ||
7447 | Returns true if the SV has a true value by Perl's rules. | |
645c22ef DM |
7448 | Use the C<SvTRUE> macro instead, which may call C<sv_true()> or may |
7449 | instead use an in-line version. | |
c461cf8f JH |
7450 | |
7451 | =cut | |
7452 | */ | |
7453 | ||
79072805 | 7454 | I32 |
864dbfa3 | 7455 | Perl_sv_true(pTHX_ register SV *sv) |
79072805 | 7456 | { |
8990e307 LW |
7457 | if (!sv) |
7458 | return 0; | |
79072805 | 7459 | if (SvPOK(sv)) { |
4e35701f NIS |
7460 | register XPV* tXpv; |
7461 | if ((tXpv = (XPV*)SvANY(sv)) && | |
c2f1de04 | 7462 | (tXpv->xpv_cur > 1 || |
4e35701f | 7463 | (tXpv->xpv_cur && *tXpv->xpv_pv != '0'))) |
79072805 LW |
7464 | return 1; |
7465 | else | |
7466 | return 0; | |
7467 | } | |
7468 | else { | |
7469 | if (SvIOK(sv)) | |
463ee0b2 | 7470 | return SvIVX(sv) != 0; |
79072805 LW |
7471 | else { |
7472 | if (SvNOK(sv)) | |
463ee0b2 | 7473 | return SvNVX(sv) != 0.0; |
79072805 | 7474 | else |
463ee0b2 | 7475 | return sv_2bool(sv); |
79072805 LW |
7476 | } |
7477 | } | |
7478 | } | |
79072805 | 7479 | |
645c22ef DM |
7480 | /* |
7481 | =for apidoc sv_iv | |
7482 | ||
7483 | A private implementation of the C<SvIVx> macro for compilers which can't | |
7484 | cope with complex macro expressions. Always use the macro instead. | |
7485 | ||
7486 | =cut | |
7487 | */ | |
7488 | ||
ff68c719 | 7489 | IV |
864dbfa3 | 7490 | Perl_sv_iv(pTHX_ register SV *sv) |
85e6fe83 | 7491 | { |
25da4f38 IZ |
7492 | if (SvIOK(sv)) { |
7493 | if (SvIsUV(sv)) | |
7494 | return (IV)SvUVX(sv); | |
ff68c719 | 7495 | return SvIVX(sv); |
25da4f38 | 7496 | } |
ff68c719 | 7497 | return sv_2iv(sv); |
85e6fe83 | 7498 | } |
85e6fe83 | 7499 | |
645c22ef DM |
7500 | /* |
7501 | =for apidoc sv_uv | |
7502 | ||
7503 | A private implementation of the C<SvUVx> macro for compilers which can't | |
7504 | cope with complex macro expressions. Always use the macro instead. | |
7505 | ||
7506 | =cut | |
7507 | */ | |
7508 | ||
ff68c719 | 7509 | UV |
864dbfa3 | 7510 | Perl_sv_uv(pTHX_ register SV *sv) |
ff68c719 | 7511 | { |
25da4f38 IZ |
7512 | if (SvIOK(sv)) { |
7513 | if (SvIsUV(sv)) | |
7514 | return SvUVX(sv); | |
7515 | return (UV)SvIVX(sv); | |
7516 | } | |
ff68c719 | 7517 | return sv_2uv(sv); |
7518 | } | |
85e6fe83 | 7519 | |
645c22ef DM |
7520 | /* |
7521 | =for apidoc sv_nv | |
7522 | ||
7523 | A private implementation of the C<SvNVx> macro for compilers which can't | |
7524 | cope with complex macro expressions. Always use the macro instead. | |
7525 | ||
7526 | =cut | |
7527 | */ | |
7528 | ||
65202027 | 7529 | NV |
864dbfa3 | 7530 | Perl_sv_nv(pTHX_ register SV *sv) |
79072805 | 7531 | { |
ff68c719 | 7532 | if (SvNOK(sv)) |
7533 | return SvNVX(sv); | |
7534 | return sv_2nv(sv); | |
79072805 | 7535 | } |
79072805 | 7536 | |
09540bc3 JH |
7537 | /* sv_pv() is now a macro using SvPV_nolen(); |
7538 | * this function provided for binary compatibility only | |
7539 | */ | |
7540 | ||
7541 | char * | |
7542 | Perl_sv_pv(pTHX_ SV *sv) | |
7543 | { | |
7544 | STRLEN n_a; | |
7545 | ||
7546 | if (SvPOK(sv)) | |
7547 | return SvPVX(sv); | |
7548 | ||
7549 | return sv_2pv(sv, &n_a); | |
7550 | } | |
7551 | ||
645c22ef DM |
7552 | /* |
7553 | =for apidoc sv_pv | |
7554 | ||
baca2b92 | 7555 | Use the C<SvPV_nolen> macro instead |
645c22ef | 7556 | |
645c22ef DM |
7557 | =for apidoc sv_pvn |
7558 | ||
7559 | A private implementation of the C<SvPV> macro for compilers which can't | |
7560 | cope with complex macro expressions. Always use the macro instead. | |
7561 | ||
7562 | =cut | |
7563 | */ | |
7564 | ||
1fa8b10d | 7565 | char * |
864dbfa3 | 7566 | Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp) |
79072805 | 7567 | { |
85e6fe83 LW |
7568 | if (SvPOK(sv)) { |
7569 | *lp = SvCUR(sv); | |
a0d0e21e | 7570 | return SvPVX(sv); |
85e6fe83 | 7571 | } |
463ee0b2 | 7572 | return sv_2pv(sv, lp); |
79072805 | 7573 | } |
79072805 | 7574 | |
6e9d1081 NC |
7575 | |
7576 | char * | |
7577 | Perl_sv_pvn_nomg(pTHX_ register SV *sv, STRLEN *lp) | |
7578 | { | |
7579 | if (SvPOK(sv)) { | |
7580 | *lp = SvCUR(sv); | |
7581 | return SvPVX(sv); | |
7582 | } | |
7583 | return sv_2pv_flags(sv, lp, 0); | |
7584 | } | |
7585 | ||
09540bc3 JH |
7586 | /* sv_pvn_force() is now a macro using Perl_sv_pvn_force_flags(); |
7587 | * this function provided for binary compatibility only | |
7588 | */ | |
7589 | ||
7590 | char * | |
7591 | Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp) | |
7592 | { | |
7593 | return sv_pvn_force_flags(sv, lp, SV_GMAGIC); | |
7594 | } | |
7595 | ||
c461cf8f JH |
7596 | /* |
7597 | =for apidoc sv_pvn_force | |
7598 | ||
7599 | Get a sensible string out of the SV somehow. | |
645c22ef DM |
7600 | A private implementation of the C<SvPV_force> macro for compilers which |
7601 | can't cope with complex macro expressions. Always use the macro instead. | |
c461cf8f | 7602 | |
8d6d96c1 HS |
7603 | =for apidoc sv_pvn_force_flags |
7604 | ||
7605 | Get a sensible string out of the SV somehow. | |
7606 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<sv> if | |
7607 | appropriate, else not. C<sv_pvn_force> and C<sv_pvn_force_nomg> are | |
7608 | implemented in terms of this function. | |
645c22ef DM |
7609 | You normally want to use the various wrapper macros instead: see |
7610 | C<SvPV_force> and C<SvPV_force_nomg> | |
8d6d96c1 HS |
7611 | |
7612 | =cut | |
7613 | */ | |
7614 | ||
7615 | char * | |
7616 | Perl_sv_pvn_force_flags(pTHX_ SV *sv, STRLEN *lp, I32 flags) | |
7617 | { | |
c04a4dfe | 7618 | char *s = NULL; |
a0d0e21e | 7619 | |
6fc92669 | 7620 | if (SvTHINKFIRST(sv) && !SvROK(sv)) |
765f542d | 7621 | sv_force_normal_flags(sv, 0); |
1c846c1f | 7622 | |
a0d0e21e LW |
7623 | if (SvPOK(sv)) { |
7624 | *lp = SvCUR(sv); | |
7625 | } | |
7626 | else { | |
748a9306 | 7627 | if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) { |
cea2e8a9 | 7628 | Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0), |
53e06cf0 | 7629 | OP_NAME(PL_op)); |
a0d0e21e | 7630 | } |
4633a7c4 | 7631 | else |
8d6d96c1 | 7632 | s = sv_2pv_flags(sv, lp, flags); |
a0d0e21e LW |
7633 | if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */ |
7634 | STRLEN len = *lp; | |
1c846c1f | 7635 | |
a0d0e21e LW |
7636 | if (SvROK(sv)) |
7637 | sv_unref(sv); | |
7638 | (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */ | |
7639 | SvGROW(sv, len + 1); | |
7640 | Move(s,SvPVX(sv),len,char); | |
7641 | SvCUR_set(sv, len); | |
7642 | *SvEND(sv) = '\0'; | |
7643 | } | |
7644 | if (!SvPOK(sv)) { | |
7645 | SvPOK_on(sv); /* validate pointer */ | |
7646 | SvTAINT(sv); | |
1d7c1841 GS |
7647 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
7648 | PTR2UV(sv),SvPVX(sv))); | |
a0d0e21e LW |
7649 | } |
7650 | } | |
7651 | return SvPVX(sv); | |
7652 | } | |
7653 | ||
09540bc3 JH |
7654 | /* sv_pvbyte () is now a macro using Perl_sv_2pv_flags(); |
7655 | * this function provided for binary compatibility only | |
7656 | */ | |
7657 | ||
7658 | char * | |
7659 | Perl_sv_pvbyte(pTHX_ SV *sv) | |
7660 | { | |
7661 | sv_utf8_downgrade(sv,0); | |
7662 | return sv_pv(sv); | |
7663 | } | |
7664 | ||
645c22ef DM |
7665 | /* |
7666 | =for apidoc sv_pvbyte | |
7667 | ||
baca2b92 | 7668 | Use C<SvPVbyte_nolen> instead. |
645c22ef | 7669 | |
645c22ef DM |
7670 | =for apidoc sv_pvbyten |
7671 | ||
7672 | A private implementation of the C<SvPVbyte> macro for compilers | |
7673 | which can't cope with complex macro expressions. Always use the macro | |
7674 | instead. | |
7675 | ||
7676 | =cut | |
7677 | */ | |
7678 | ||
7340a771 GS |
7679 | char * |
7680 | Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp) | |
7681 | { | |
ffebcc3e | 7682 | sv_utf8_downgrade(sv,0); |
7340a771 GS |
7683 | return sv_pvn(sv,lp); |
7684 | } | |
7685 | ||
645c22ef DM |
7686 | /* |
7687 | =for apidoc sv_pvbyten_force | |
7688 | ||
7689 | A private implementation of the C<SvPVbytex_force> macro for compilers | |
7690 | which can't cope with complex macro expressions. Always use the macro | |
7691 | instead. | |
7692 | ||
7693 | =cut | |
7694 | */ | |
7695 | ||
7340a771 GS |
7696 | char * |
7697 | Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp) | |
7698 | { | |
ffebcc3e | 7699 | sv_utf8_downgrade(sv,0); |
7340a771 GS |
7700 | return sv_pvn_force(sv,lp); |
7701 | } | |
7702 | ||
09540bc3 JH |
7703 | /* sv_pvutf8 () is now a macro using Perl_sv_2pv_flags(); |
7704 | * this function provided for binary compatibility only | |
7705 | */ | |
7706 | ||
7707 | char * | |
7708 | Perl_sv_pvutf8(pTHX_ SV *sv) | |
7709 | { | |
7710 | sv_utf8_upgrade(sv); | |
7711 | return sv_pv(sv); | |
7712 | } | |
7713 | ||
645c22ef DM |
7714 | /* |
7715 | =for apidoc sv_pvutf8 | |
7716 | ||
baca2b92 | 7717 | Use the C<SvPVutf8_nolen> macro instead |
645c22ef | 7718 | |
645c22ef DM |
7719 | =for apidoc sv_pvutf8n |
7720 | ||
7721 | A private implementation of the C<SvPVutf8> macro for compilers | |
7722 | which can't cope with complex macro expressions. Always use the macro | |
7723 | instead. | |
7724 | ||
7725 | =cut | |
7726 | */ | |
7727 | ||
7340a771 GS |
7728 | char * |
7729 | Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp) | |
7730 | { | |
560a288e | 7731 | sv_utf8_upgrade(sv); |
7340a771 GS |
7732 | return sv_pvn(sv,lp); |
7733 | } | |
7734 | ||
c461cf8f JH |
7735 | /* |
7736 | =for apidoc sv_pvutf8n_force | |
7737 | ||
645c22ef DM |
7738 | A private implementation of the C<SvPVutf8_force> macro for compilers |
7739 | which can't cope with complex macro expressions. Always use the macro | |
7740 | instead. | |
c461cf8f JH |
7741 | |
7742 | =cut | |
7743 | */ | |
7744 | ||
7340a771 GS |
7745 | char * |
7746 | Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp) | |
7747 | { | |
560a288e | 7748 | sv_utf8_upgrade(sv); |
7340a771 GS |
7749 | return sv_pvn_force(sv,lp); |
7750 | } | |
7751 | ||
c461cf8f JH |
7752 | /* |
7753 | =for apidoc sv_reftype | |
7754 | ||
7755 | Returns a string describing what the SV is a reference to. | |
7756 | ||
7757 | =cut | |
7758 | */ | |
7759 | ||
7340a771 | 7760 | char * |
864dbfa3 | 7761 | Perl_sv_reftype(pTHX_ SV *sv, int ob) |
a0d0e21e | 7762 | { |
c86bf373 | 7763 | if (ob && SvOBJECT(sv)) { |
de11ba31 | 7764 | return HvNAME(SvSTASH(sv)); |
c86bf373 | 7765 | } |
a0d0e21e LW |
7766 | else { |
7767 | switch (SvTYPE(sv)) { | |
7768 | case SVt_NULL: | |
7769 | case SVt_IV: | |
7770 | case SVt_NV: | |
7771 | case SVt_RV: | |
7772 | case SVt_PV: | |
7773 | case SVt_PVIV: | |
7774 | case SVt_PVNV: | |
7775 | case SVt_PVMG: | |
7776 | case SVt_PVBM: | |
439cb1c4 JP |
7777 | if (SvVOK(sv)) |
7778 | return "VSTRING"; | |
a0d0e21e LW |
7779 | if (SvROK(sv)) |
7780 | return "REF"; | |
7781 | else | |
7782 | return "SCALAR"; | |
7783 | case SVt_PVLV: return "LVALUE"; | |
7784 | case SVt_PVAV: return "ARRAY"; | |
7785 | case SVt_PVHV: return "HASH"; | |
7786 | case SVt_PVCV: return "CODE"; | |
7787 | case SVt_PVGV: return "GLOB"; | |
1d2dff63 | 7788 | case SVt_PVFM: return "FORMAT"; |
27f9d8f3 | 7789 | case SVt_PVIO: return "IO"; |
a0d0e21e LW |
7790 | default: return "UNKNOWN"; |
7791 | } | |
7792 | } | |
7793 | } | |
7794 | ||
954c1994 GS |
7795 | /* |
7796 | =for apidoc sv_isobject | |
7797 | ||
7798 | Returns a boolean indicating whether the SV is an RV pointing to a blessed | |
7799 | object. If the SV is not an RV, or if the object is not blessed, then this | |
7800 | will return false. | |
7801 | ||
7802 | =cut | |
7803 | */ | |
7804 | ||
463ee0b2 | 7805 | int |
864dbfa3 | 7806 | Perl_sv_isobject(pTHX_ SV *sv) |
85e6fe83 | 7807 | { |
68dc0745 | 7808 | if (!sv) |
7809 | return 0; | |
7810 | if (SvGMAGICAL(sv)) | |
7811 | mg_get(sv); | |
85e6fe83 LW |
7812 | if (!SvROK(sv)) |
7813 | return 0; | |
7814 | sv = (SV*)SvRV(sv); | |
7815 | if (!SvOBJECT(sv)) | |
7816 | return 0; | |
7817 | return 1; | |
7818 | } | |
7819 | ||
954c1994 GS |
7820 | /* |
7821 | =for apidoc sv_isa | |
7822 | ||
7823 | Returns a boolean indicating whether the SV is blessed into the specified | |
7824 | class. This does not check for subtypes; use C<sv_derived_from> to verify | |
7825 | an inheritance relationship. | |
7826 | ||
7827 | =cut | |
7828 | */ | |
7829 | ||
85e6fe83 | 7830 | int |
864dbfa3 | 7831 | Perl_sv_isa(pTHX_ SV *sv, const char *name) |
463ee0b2 | 7832 | { |
68dc0745 | 7833 | if (!sv) |
7834 | return 0; | |
7835 | if (SvGMAGICAL(sv)) | |
7836 | mg_get(sv); | |
ed6116ce | 7837 | if (!SvROK(sv)) |
463ee0b2 | 7838 | return 0; |
ed6116ce LW |
7839 | sv = (SV*)SvRV(sv); |
7840 | if (!SvOBJECT(sv)) | |
463ee0b2 LW |
7841 | return 0; |
7842 | ||
7843 | return strEQ(HvNAME(SvSTASH(sv)), name); | |
7844 | } | |
7845 | ||
954c1994 GS |
7846 | /* |
7847 | =for apidoc newSVrv | |
7848 | ||
7849 | Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then | |
7850 | it will be upgraded to one. If C<classname> is non-null then the new SV will | |
7851 | be blessed in the specified package. The new SV is returned and its | |
7852 | reference count is 1. | |
7853 | ||
7854 | =cut | |
7855 | */ | |
7856 | ||
463ee0b2 | 7857 | SV* |
864dbfa3 | 7858 | Perl_newSVrv(pTHX_ SV *rv, const char *classname) |
463ee0b2 | 7859 | { |
463ee0b2 LW |
7860 | SV *sv; |
7861 | ||
4561caa4 | 7862 | new_SV(sv); |
51cf62d8 | 7863 | |
765f542d | 7864 | SV_CHECK_THINKFIRST_COW_DROP(rv); |
51cf62d8 | 7865 | SvAMAGIC_off(rv); |
51cf62d8 | 7866 | |
0199fce9 JD |
7867 | if (SvTYPE(rv) >= SVt_PVMG) { |
7868 | U32 refcnt = SvREFCNT(rv); | |
7869 | SvREFCNT(rv) = 0; | |
7870 | sv_clear(rv); | |
7871 | SvFLAGS(rv) = 0; | |
7872 | SvREFCNT(rv) = refcnt; | |
7873 | } | |
7874 | ||
51cf62d8 | 7875 | if (SvTYPE(rv) < SVt_RV) |
0199fce9 JD |
7876 | sv_upgrade(rv, SVt_RV); |
7877 | else if (SvTYPE(rv) > SVt_RV) { | |
7878 | (void)SvOOK_off(rv); | |
7879 | if (SvPVX(rv) && SvLEN(rv)) | |
7880 | Safefree(SvPVX(rv)); | |
7881 | SvCUR_set(rv, 0); | |
7882 | SvLEN_set(rv, 0); | |
7883 | } | |
51cf62d8 OT |
7884 | |
7885 | (void)SvOK_off(rv); | |
053fc874 | 7886 | SvRV(rv) = sv; |
ed6116ce | 7887 | SvROK_on(rv); |
463ee0b2 | 7888 | |
a0d0e21e LW |
7889 | if (classname) { |
7890 | HV* stash = gv_stashpv(classname, TRUE); | |
7891 | (void)sv_bless(rv, stash); | |
7892 | } | |
7893 | return sv; | |
7894 | } | |
7895 | ||
954c1994 GS |
7896 | /* |
7897 | =for apidoc sv_setref_pv | |
7898 | ||
7899 | Copies a pointer into a new SV, optionally blessing the SV. The C<rv> | |
7900 | argument will be upgraded to an RV. That RV will be modified to point to | |
7901 | the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed | |
7902 | into the SV. The C<classname> argument indicates the package for the | |
7903 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
7904 | will be returned and will have a reference count of 1. | |
7905 | ||
7906 | Do not use with other Perl types such as HV, AV, SV, CV, because those | |
7907 | objects will become corrupted by the pointer copy process. | |
7908 | ||
7909 | Note that C<sv_setref_pvn> copies the string while this copies the pointer. | |
7910 | ||
7911 | =cut | |
7912 | */ | |
7913 | ||
a0d0e21e | 7914 | SV* |
864dbfa3 | 7915 | Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv) |
a0d0e21e | 7916 | { |
189b2af5 | 7917 | if (!pv) { |
3280af22 | 7918 | sv_setsv(rv, &PL_sv_undef); |
189b2af5 GS |
7919 | SvSETMAGIC(rv); |
7920 | } | |
a0d0e21e | 7921 | else |
56431972 | 7922 | sv_setiv(newSVrv(rv,classname), PTR2IV(pv)); |
a0d0e21e LW |
7923 | return rv; |
7924 | } | |
7925 | ||
954c1994 GS |
7926 | /* |
7927 | =for apidoc sv_setref_iv | |
7928 | ||
7929 | Copies an integer into a new SV, optionally blessing the SV. The C<rv> | |
7930 | argument will be upgraded to an RV. That RV will be modified to point to | |
7931 | the new SV. The C<classname> argument indicates the package for the | |
7932 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
7933 | will be returned and will have a reference count of 1. | |
7934 | ||
7935 | =cut | |
7936 | */ | |
7937 | ||
a0d0e21e | 7938 | SV* |
864dbfa3 | 7939 | Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv) |
a0d0e21e LW |
7940 | { |
7941 | sv_setiv(newSVrv(rv,classname), iv); | |
7942 | return rv; | |
7943 | } | |
7944 | ||
954c1994 | 7945 | /* |
e1c57cef JH |
7946 | =for apidoc sv_setref_uv |
7947 | ||
7948 | Copies an unsigned integer into a new SV, optionally blessing the SV. The C<rv> | |
7949 | argument will be upgraded to an RV. That RV will be modified to point to | |
7950 | the new SV. The C<classname> argument indicates the package for the | |
7951 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
7952 | will be returned and will have a reference count of 1. | |
7953 | ||
7954 | =cut | |
7955 | */ | |
7956 | ||
7957 | SV* | |
7958 | Perl_sv_setref_uv(pTHX_ SV *rv, const char *classname, UV uv) | |
7959 | { | |
7960 | sv_setuv(newSVrv(rv,classname), uv); | |
7961 | return rv; | |
7962 | } | |
7963 | ||
7964 | /* | |
954c1994 GS |
7965 | =for apidoc sv_setref_nv |
7966 | ||
7967 | Copies a double 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. The C<classname> argument indicates the package for the | |
7970 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
7971 | will be returned and will have a reference count of 1. | |
7972 | ||
7973 | =cut | |
7974 | */ | |
7975 | ||
a0d0e21e | 7976 | SV* |
65202027 | 7977 | Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv) |
a0d0e21e LW |
7978 | { |
7979 | sv_setnv(newSVrv(rv,classname), nv); | |
7980 | return rv; | |
7981 | } | |
463ee0b2 | 7982 | |
954c1994 GS |
7983 | /* |
7984 | =for apidoc sv_setref_pvn | |
7985 | ||
7986 | Copies a string into a new SV, optionally blessing the SV. The length of the | |
7987 | string must be specified with C<n>. The C<rv> argument will be upgraded to | |
7988 | an RV. That RV will be modified to point to the new SV. The C<classname> | |
7989 | argument indicates the package for the blessing. Set C<classname> to | |
7990 | C<Nullch> to avoid the blessing. The new SV will be returned and will have | |
7991 | a reference count of 1. | |
7992 | ||
7993 | Note that C<sv_setref_pv> copies the pointer while this copies the string. | |
7994 | ||
7995 | =cut | |
7996 | */ | |
7997 | ||
a0d0e21e | 7998 | SV* |
864dbfa3 | 7999 | Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n) |
a0d0e21e LW |
8000 | { |
8001 | sv_setpvn(newSVrv(rv,classname), pv, n); | |
463ee0b2 LW |
8002 | return rv; |
8003 | } | |
8004 | ||
954c1994 GS |
8005 | /* |
8006 | =for apidoc sv_bless | |
8007 | ||
8008 | Blesses an SV into a specified package. The SV must be an RV. The package | |
8009 | must be designated by its stash (see C<gv_stashpv()>). The reference count | |
8010 | of the SV is unaffected. | |
8011 | ||
8012 | =cut | |
8013 | */ | |
8014 | ||
a0d0e21e | 8015 | SV* |
864dbfa3 | 8016 | Perl_sv_bless(pTHX_ SV *sv, HV *stash) |
a0d0e21e | 8017 | { |
76e3520e | 8018 | SV *tmpRef; |
a0d0e21e | 8019 | if (!SvROK(sv)) |
cea2e8a9 | 8020 | Perl_croak(aTHX_ "Can't bless non-reference value"); |
76e3520e GS |
8021 | tmpRef = SvRV(sv); |
8022 | if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) { | |
8023 | if (SvREADONLY(tmpRef)) | |
cea2e8a9 | 8024 | Perl_croak(aTHX_ PL_no_modify); |
76e3520e GS |
8025 | if (SvOBJECT(tmpRef)) { |
8026 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 8027 | --PL_sv_objcount; |
76e3520e | 8028 | SvREFCNT_dec(SvSTASH(tmpRef)); |
2e3febc6 | 8029 | } |
a0d0e21e | 8030 | } |
76e3520e GS |
8031 | SvOBJECT_on(tmpRef); |
8032 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 8033 | ++PL_sv_objcount; |
76e3520e GS |
8034 | (void)SvUPGRADE(tmpRef, SVt_PVMG); |
8035 | SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash); | |
a0d0e21e | 8036 | |
2e3febc6 CS |
8037 | if (Gv_AMG(stash)) |
8038 | SvAMAGIC_on(sv); | |
8039 | else | |
8040 | SvAMAGIC_off(sv); | |
a0d0e21e | 8041 | |
1edbfb88 AB |
8042 | if(SvSMAGICAL(tmpRef)) |
8043 | if(mg_find(tmpRef, PERL_MAGIC_ext) || mg_find(tmpRef, PERL_MAGIC_uvar)) | |
8044 | mg_set(tmpRef); | |
8045 | ||
8046 | ||
ecdeb87c | 8047 | |
a0d0e21e LW |
8048 | return sv; |
8049 | } | |
8050 | ||
645c22ef | 8051 | /* Downgrades a PVGV to a PVMG. |
645c22ef DM |
8052 | */ |
8053 | ||
76e3520e | 8054 | STATIC void |
cea2e8a9 | 8055 | S_sv_unglob(pTHX_ SV *sv) |
a0d0e21e | 8056 | { |
850fabdf GS |
8057 | void *xpvmg; |
8058 | ||
a0d0e21e LW |
8059 | assert(SvTYPE(sv) == SVt_PVGV); |
8060 | SvFAKE_off(sv); | |
8061 | if (GvGP(sv)) | |
1edc1566 | 8062 | gp_free((GV*)sv); |
e826b3c7 GS |
8063 | if (GvSTASH(sv)) { |
8064 | SvREFCNT_dec(GvSTASH(sv)); | |
8065 | GvSTASH(sv) = Nullhv; | |
8066 | } | |
14befaf4 | 8067 | sv_unmagic(sv, PERL_MAGIC_glob); |
a0d0e21e | 8068 | Safefree(GvNAME(sv)); |
a5f75d66 | 8069 | GvMULTI_off(sv); |
850fabdf GS |
8070 | |
8071 | /* need to keep SvANY(sv) in the right arena */ | |
8072 | xpvmg = new_XPVMG(); | |
8073 | StructCopy(SvANY(sv), xpvmg, XPVMG); | |
8074 | del_XPVGV(SvANY(sv)); | |
8075 | SvANY(sv) = xpvmg; | |
8076 | ||
a0d0e21e LW |
8077 | SvFLAGS(sv) &= ~SVTYPEMASK; |
8078 | SvFLAGS(sv) |= SVt_PVMG; | |
8079 | } | |
8080 | ||
954c1994 | 8081 | /* |
840a7b70 | 8082 | =for apidoc sv_unref_flags |
954c1994 GS |
8083 | |
8084 | Unsets the RV status of the SV, and decrements the reference count of | |
8085 | whatever was being referenced by the RV. This can almost be thought of | |
840a7b70 IZ |
8086 | as a reversal of C<newSVrv>. The C<cflags> argument can contain |
8087 | C<SV_IMMEDIATE_UNREF> to force the reference count to be decremented | |
8088 | (otherwise the decrementing is conditional on the reference count being | |
8089 | different from one or the reference being a readonly SV). | |
7889fe52 | 8090 | See C<SvROK_off>. |
954c1994 GS |
8091 | |
8092 | =cut | |
8093 | */ | |
8094 | ||
ed6116ce | 8095 | void |
840a7b70 | 8096 | Perl_sv_unref_flags(pTHX_ SV *sv, U32 flags) |
ed6116ce | 8097 | { |
a0d0e21e | 8098 | SV* rv = SvRV(sv); |
810b8aa5 GS |
8099 | |
8100 | if (SvWEAKREF(sv)) { | |
8101 | sv_del_backref(sv); | |
8102 | SvWEAKREF_off(sv); | |
8103 | SvRV(sv) = 0; | |
8104 | return; | |
8105 | } | |
ed6116ce LW |
8106 | SvRV(sv) = 0; |
8107 | SvROK_off(sv); | |
04ca4930 NC |
8108 | /* You can't have a || SvREADONLY(rv) here, as $a = $$a, where $a was |
8109 | assigned to as BEGIN {$a = \"Foo"} will fail. */ | |
8110 | if (SvREFCNT(rv) != 1 || (flags & SV_IMMEDIATE_UNREF)) | |
4633a7c4 | 8111 | SvREFCNT_dec(rv); |
840a7b70 | 8112 | else /* XXX Hack, but hard to make $a=$a->[1] work otherwise */ |
4633a7c4 | 8113 | sv_2mortal(rv); /* Schedule for freeing later */ |
ed6116ce | 8114 | } |
8990e307 | 8115 | |
840a7b70 IZ |
8116 | /* |
8117 | =for apidoc sv_unref | |
8118 | ||
8119 | Unsets the RV status of the SV, and decrements the reference count of | |
8120 | whatever was being referenced by the RV. This can almost be thought of | |
8121 | as a reversal of C<newSVrv>. This is C<sv_unref_flags> with the C<flag> | |
7889fe52 | 8122 | being zero. See C<SvROK_off>. |
840a7b70 IZ |
8123 | |
8124 | =cut | |
8125 | */ | |
8126 | ||
8127 | void | |
8128 | Perl_sv_unref(pTHX_ SV *sv) | |
8129 | { | |
8130 | sv_unref_flags(sv, 0); | |
8131 | } | |
8132 | ||
645c22ef DM |
8133 | /* |
8134 | =for apidoc sv_taint | |
8135 | ||
8136 | Taint an SV. Use C<SvTAINTED_on> instead. | |
8137 | =cut | |
8138 | */ | |
8139 | ||
bbce6d69 | 8140 | void |
864dbfa3 | 8141 | Perl_sv_taint(pTHX_ SV *sv) |
bbce6d69 | 8142 | { |
14befaf4 | 8143 | sv_magic((sv), Nullsv, PERL_MAGIC_taint, Nullch, 0); |
bbce6d69 | 8144 | } |
8145 | ||
645c22ef DM |
8146 | /* |
8147 | =for apidoc sv_untaint | |
8148 | ||
8149 | Untaint an SV. Use C<SvTAINTED_off> instead. | |
8150 | =cut | |
8151 | */ | |
8152 | ||
bbce6d69 | 8153 | void |
864dbfa3 | 8154 | Perl_sv_untaint(pTHX_ SV *sv) |
bbce6d69 | 8155 | { |
13f57bf8 | 8156 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
14befaf4 | 8157 | MAGIC *mg = mg_find(sv, PERL_MAGIC_taint); |
36477c24 | 8158 | if (mg) |
565764a8 | 8159 | mg->mg_len &= ~1; |
36477c24 | 8160 | } |
bbce6d69 | 8161 | } |
8162 | ||
645c22ef DM |
8163 | /* |
8164 | =for apidoc sv_tainted | |
8165 | ||
8166 | Test an SV for taintedness. Use C<SvTAINTED> instead. | |
8167 | =cut | |
8168 | */ | |
8169 | ||
bbce6d69 | 8170 | bool |
864dbfa3 | 8171 | Perl_sv_tainted(pTHX_ SV *sv) |
bbce6d69 | 8172 | { |
13f57bf8 | 8173 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
14befaf4 | 8174 | MAGIC *mg = mg_find(sv, PERL_MAGIC_taint); |
155aba94 | 8175 | if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv))) |
36477c24 | 8176 | return TRUE; |
8177 | } | |
8178 | return FALSE; | |
bbce6d69 | 8179 | } |
8180 | ||
09540bc3 JH |
8181 | /* |
8182 | =for apidoc sv_setpviv | |
8183 | ||
8184 | Copies an integer into the given SV, also updating its string value. | |
8185 | Does not handle 'set' magic. See C<sv_setpviv_mg>. | |
8186 | ||
8187 | =cut | |
8188 | */ | |
8189 | ||
8190 | void | |
8191 | Perl_sv_setpviv(pTHX_ SV *sv, IV iv) | |
8192 | { | |
8193 | char buf[TYPE_CHARS(UV)]; | |
8194 | char *ebuf; | |
8195 | char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf); | |
8196 | ||
8197 | sv_setpvn(sv, ptr, ebuf - ptr); | |
8198 | } | |
8199 | ||
8200 | /* | |
8201 | =for apidoc sv_setpviv_mg | |
8202 | ||
8203 | Like C<sv_setpviv>, but also handles 'set' magic. | |
8204 | ||
8205 | =cut | |
8206 | */ | |
8207 | ||
8208 | void | |
8209 | Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv) | |
8210 | { | |
8211 | char buf[TYPE_CHARS(UV)]; | |
8212 | char *ebuf; | |
8213 | char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf); | |
8214 | ||
8215 | sv_setpvn(sv, ptr, ebuf - ptr); | |
8216 | SvSETMAGIC(sv); | |
8217 | } | |
8218 | ||
cea2e8a9 | 8219 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
8220 | |
8221 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
8222 | * version of the main function, (which may itself be aliased to us). | |
8223 | * Don't access this version directly. | |
8224 | */ | |
8225 | ||
cea2e8a9 GS |
8226 | void |
8227 | Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...) | |
8228 | { | |
8229 | dTHX; | |
8230 | va_list args; | |
8231 | va_start(args, pat); | |
c5be433b | 8232 | sv_vsetpvf(sv, pat, &args); |
cea2e8a9 GS |
8233 | va_end(args); |
8234 | } | |
8235 | ||
645c22ef DM |
8236 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
8237 | * version of the main function, (which may itself be aliased to us). | |
8238 | * Don't access this version directly. | |
8239 | */ | |
cea2e8a9 GS |
8240 | |
8241 | void | |
8242 | Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
8243 | { | |
8244 | dTHX; | |
8245 | va_list args; | |
8246 | va_start(args, pat); | |
c5be433b | 8247 | sv_vsetpvf_mg(sv, pat, &args); |
cea2e8a9 | 8248 | va_end(args); |
cea2e8a9 GS |
8249 | } |
8250 | #endif | |
8251 | ||
954c1994 GS |
8252 | /* |
8253 | =for apidoc sv_setpvf | |
8254 | ||
8255 | Processes its arguments like C<sprintf> and sets an SV to the formatted | |
8256 | output. Does not handle 'set' magic. See C<sv_setpvf_mg>. | |
8257 | ||
8258 | =cut | |
8259 | */ | |
8260 | ||
46fc3d4c | 8261 | void |
864dbfa3 | 8262 | Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 8263 | { |
8264 | va_list args; | |
46fc3d4c | 8265 | va_start(args, pat); |
c5be433b | 8266 | sv_vsetpvf(sv, pat, &args); |
46fc3d4c | 8267 | va_end(args); |
8268 | } | |
8269 | ||
645c22ef DM |
8270 | /* backend for C<sv_setpvf> and C<sv_setpvf_nocontext> */ |
8271 | ||
c5be433b GS |
8272 | void |
8273 | Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args) | |
8274 | { | |
8275 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
8276 | } | |
ef50df4b | 8277 | |
954c1994 GS |
8278 | /* |
8279 | =for apidoc sv_setpvf_mg | |
8280 | ||
8281 | Like C<sv_setpvf>, but also handles 'set' magic. | |
8282 | ||
8283 | =cut | |
8284 | */ | |
8285 | ||
ef50df4b | 8286 | void |
864dbfa3 | 8287 | Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
8288 | { |
8289 | va_list args; | |
ef50df4b | 8290 | va_start(args, pat); |
c5be433b | 8291 | sv_vsetpvf_mg(sv, pat, &args); |
ef50df4b | 8292 | va_end(args); |
c5be433b GS |
8293 | } |
8294 | ||
645c22ef DM |
8295 | /* backend for C<sv_setpvf_mg> C<setpvf_mg_nocontext> */ |
8296 | ||
c5be433b GS |
8297 | void |
8298 | Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
8299 | { | |
8300 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
ef50df4b GS |
8301 | SvSETMAGIC(sv); |
8302 | } | |
8303 | ||
cea2e8a9 | 8304 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
8305 | |
8306 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
8307 | * version of the main function, (which may itself be aliased to us). | |
8308 | * Don't access this version directly. | |
8309 | */ | |
8310 | ||
cea2e8a9 GS |
8311 | void |
8312 | Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...) | |
8313 | { | |
8314 | dTHX; | |
8315 | va_list args; | |
8316 | va_start(args, pat); | |
c5be433b | 8317 | sv_vcatpvf(sv, pat, &args); |
cea2e8a9 GS |
8318 | va_end(args); |
8319 | } | |
8320 | ||
645c22ef DM |
8321 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
8322 | * version of the main function, (which may itself be aliased to us). | |
8323 | * Don't access this version directly. | |
8324 | */ | |
8325 | ||
cea2e8a9 GS |
8326 | void |
8327 | Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
8328 | { | |
8329 | dTHX; | |
8330 | va_list args; | |
8331 | va_start(args, pat); | |
c5be433b | 8332 | sv_vcatpvf_mg(sv, pat, &args); |
cea2e8a9 | 8333 | va_end(args); |
cea2e8a9 GS |
8334 | } |
8335 | #endif | |
8336 | ||
954c1994 GS |
8337 | /* |
8338 | =for apidoc sv_catpvf | |
8339 | ||
d5ce4a7c GA |
8340 | Processes its arguments like C<sprintf> and appends the formatted |
8341 | output to an SV. If the appended data contains "wide" characters | |
8342 | (including, but not limited to, SVs with a UTF-8 PV formatted with %s, | |
8343 | and characters >255 formatted with %c), the original SV might get | |
8344 | upgraded to UTF-8. Handles 'get' magic, but not 'set' magic. | |
8345 | C<SvSETMAGIC()> must typically be called after calling this function | |
8346 | to handle 'set' magic. | |
954c1994 | 8347 | |
d5ce4a7c | 8348 | =cut */ |
954c1994 | 8349 | |
46fc3d4c | 8350 | void |
864dbfa3 | 8351 | Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 8352 | { |
8353 | va_list args; | |
46fc3d4c | 8354 | va_start(args, pat); |
c5be433b | 8355 | sv_vcatpvf(sv, pat, &args); |
46fc3d4c | 8356 | va_end(args); |
8357 | } | |
8358 | ||
645c22ef DM |
8359 | /* backend for C<sv_catpvf> and C<catpvf_mg_nocontext> */ |
8360 | ||
ef50df4b | 8361 | void |
c5be433b GS |
8362 | Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args) |
8363 | { | |
8364 | sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
8365 | } | |
8366 | ||
954c1994 GS |
8367 | /* |
8368 | =for apidoc sv_catpvf_mg | |
8369 | ||
8370 | Like C<sv_catpvf>, but also handles 'set' magic. | |
8371 | ||
8372 | =cut | |
8373 | */ | |
8374 | ||
c5be433b | 8375 | void |
864dbfa3 | 8376 | Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
8377 | { |
8378 | va_list args; | |
ef50df4b | 8379 | va_start(args, pat); |
c5be433b | 8380 | sv_vcatpvf_mg(sv, pat, &args); |
ef50df4b | 8381 | va_end(args); |
c5be433b GS |
8382 | } |
8383 | ||
645c22ef DM |
8384 | /* backend for C<catpvf_mg> and C<catpvf_mg_nocontext> */ |
8385 | ||
c5be433b GS |
8386 | void |
8387 | Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
8388 | { | |
8389 | sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
ef50df4b GS |
8390 | SvSETMAGIC(sv); |
8391 | } | |
8392 | ||
954c1994 GS |
8393 | /* |
8394 | =for apidoc sv_vsetpvfn | |
8395 | ||
8396 | Works like C<vcatpvfn> but copies the text into the SV instead of | |
8397 | appending it. | |
8398 | ||
645c22ef DM |
8399 | Usually used via one of its frontends C<sv_setpvf> and C<sv_setpvf_mg>. |
8400 | ||
954c1994 GS |
8401 | =cut |
8402 | */ | |
8403 | ||
46fc3d4c | 8404 | void |
7d5ea4e7 | 8405 | Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 8406 | { |
8407 | sv_setpvn(sv, "", 0); | |
7d5ea4e7 | 8408 | sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted); |
46fc3d4c | 8409 | } |
8410 | ||
645c22ef DM |
8411 | /* private function for use in sv_vcatpvfn via the EXPECT_NUMBER macro */ |
8412 | ||
2d00ba3b | 8413 | STATIC I32 |
9dd79c3f | 8414 | S_expect_number(pTHX_ char** pattern) |
211dfcf1 HS |
8415 | { |
8416 | I32 var = 0; | |
8417 | switch (**pattern) { | |
8418 | case '1': case '2': case '3': | |
8419 | case '4': case '5': case '6': | |
8420 | case '7': case '8': case '9': | |
8421 | while (isDIGIT(**pattern)) | |
8422 | var = var * 10 + (*(*pattern)++ - '0'); | |
8423 | } | |
8424 | return var; | |
8425 | } | |
9dd79c3f | 8426 | #define EXPECT_NUMBER(pattern, var) (var = S_expect_number(aTHX_ &pattern)) |
211dfcf1 | 8427 | |
954c1994 GS |
8428 | /* |
8429 | =for apidoc sv_vcatpvfn | |
8430 | ||
8431 | Processes its arguments like C<vsprintf> and appends the formatted output | |
8432 | to an SV. Uses an array of SVs if the C style variable argument list is | |
8433 | missing (NULL). When running with taint checks enabled, indicates via | |
8434 | C<maybe_tainted> if results are untrustworthy (often due to the use of | |
8435 | locales). | |
8436 | ||
645c22ef DM |
8437 | Usually used via one of its frontends C<sv_catpvf> and C<sv_catpvf_mg>. |
8438 | ||
954c1994 GS |
8439 | =cut |
8440 | */ | |
8441 | ||
46fc3d4c | 8442 | void |
7d5ea4e7 | 8443 | Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 8444 | { |
8445 | char *p; | |
8446 | char *q; | |
8447 | char *patend; | |
fc36a67e | 8448 | STRLEN origlen; |
46fc3d4c | 8449 | I32 svix = 0; |
c635e13b | 8450 | static char nullstr[] = "(null)"; |
9c5ffd7c | 8451 | SV *argsv = Nullsv; |
db79b45b JH |
8452 | bool has_utf8; /* has the result utf8? */ |
8453 | bool pat_utf8; /* the pattern is in utf8? */ | |
8454 | SV *nsv = Nullsv; | |
8455 | ||
8456 | has_utf8 = pat_utf8 = DO_UTF8(sv); | |
46fc3d4c | 8457 | |
8458 | /* no matter what, this is a string now */ | |
fc36a67e | 8459 | (void)SvPV_force(sv, origlen); |
46fc3d4c | 8460 | |
fc36a67e | 8461 | /* special-case "", "%s", and "%_" */ |
46fc3d4c | 8462 | if (patlen == 0) |
8463 | return; | |
fc36a67e | 8464 | if (patlen == 2 && pat[0] == '%') { |
8465 | switch (pat[1]) { | |
8466 | case 's': | |
c635e13b | 8467 | if (args) { |
8468 | char *s = va_arg(*args, char*); | |
8469 | sv_catpv(sv, s ? s : nullstr); | |
8470 | } | |
7e2040f0 | 8471 | else if (svix < svmax) { |
fc36a67e | 8472 | sv_catsv(sv, *svargs); |
7e2040f0 GS |
8473 | if (DO_UTF8(*svargs)) |
8474 | SvUTF8_on(sv); | |
8475 | } | |
fc36a67e | 8476 | return; |
8477 | case '_': | |
8478 | if (args) { | |
7e2040f0 GS |
8479 | argsv = va_arg(*args, SV*); |
8480 | sv_catsv(sv, argsv); | |
8481 | if (DO_UTF8(argsv)) | |
8482 | SvUTF8_on(sv); | |
fc36a67e | 8483 | return; |
8484 | } | |
8485 | /* See comment on '_' below */ | |
8486 | break; | |
8487 | } | |
46fc3d4c | 8488 | } |
8489 | ||
2cf2cfc6 | 8490 | if (!args && svix < svmax && DO_UTF8(*svargs)) |
205f51d8 | 8491 | has_utf8 = TRUE; |
2cf2cfc6 | 8492 | |
46fc3d4c | 8493 | patend = (char*)pat + patlen; |
8494 | for (p = (char*)pat; p < patend; p = q) { | |
8495 | bool alt = FALSE; | |
8496 | bool left = FALSE; | |
b22c7a20 | 8497 | bool vectorize = FALSE; |
211dfcf1 | 8498 | bool vectorarg = FALSE; |
2cf2cfc6 | 8499 | bool vec_utf8 = FALSE; |
46fc3d4c | 8500 | char fill = ' '; |
8501 | char plus = 0; | |
8502 | char intsize = 0; | |
8503 | STRLEN width = 0; | |
fc36a67e | 8504 | STRLEN zeros = 0; |
46fc3d4c | 8505 | bool has_precis = FALSE; |
8506 | STRLEN precis = 0; | |
58e33a90 | 8507 | I32 osvix = svix; |
2cf2cfc6 | 8508 | bool is_utf8 = FALSE; /* is this item utf8? */ |
20f6aaab AS |
8509 | #ifdef HAS_LDBL_SPRINTF_BUG |
8510 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 | 8511 | with sfio - Allen <allens@cpan.org> */ |
20f6aaab AS |
8512 | bool fix_ldbl_sprintf_bug = FALSE; |
8513 | #endif | |
205f51d8 | 8514 | |
46fc3d4c | 8515 | char esignbuf[4]; |
ad391ad9 | 8516 | U8 utf8buf[UTF8_MAXLEN+1]; |
46fc3d4c | 8517 | STRLEN esignlen = 0; |
8518 | ||
8519 | char *eptr = Nullch; | |
fc36a67e | 8520 | STRLEN elen = 0; |
089c015b JH |
8521 | /* Times 4: a decimal digit takes more than 3 binary digits. |
8522 | * NV_DIG: mantissa takes than many decimal digits. | |
8523 | * Plus 32: Playing safe. */ | |
8524 | char ebuf[IV_DIG * 4 + NV_DIG + 32]; | |
205f51d8 | 8525 | /* large enough for "%#.#f" --chip */ |
2d4389e4 | 8526 | /* what about long double NVs? --jhi */ |
b22c7a20 | 8527 | |
81f715da | 8528 | SV *vecsv = Nullsv; |
a05b299f | 8529 | U8 *vecstr = Null(U8*); |
b22c7a20 | 8530 | STRLEN veclen = 0; |
934abaf1 | 8531 | char c = 0; |
46fc3d4c | 8532 | int i; |
9c5ffd7c | 8533 | unsigned base = 0; |
8c8eb53c RB |
8534 | IV iv = 0; |
8535 | UV uv = 0; | |
9e5b023a JH |
8536 | /* we need a long double target in case HAS_LONG_DOUBLE but |
8537 | not USE_LONG_DOUBLE | |
8538 | */ | |
35fff930 | 8539 | #if defined(HAS_LONG_DOUBLE) && LONG_DOUBLESIZE > DOUBLESIZE |
9e5b023a JH |
8540 | long double nv; |
8541 | #else | |
65202027 | 8542 | NV nv; |
9e5b023a | 8543 | #endif |
46fc3d4c | 8544 | STRLEN have; |
8545 | STRLEN need; | |
8546 | STRLEN gap; | |
b22c7a20 GS |
8547 | char *dotstr = "."; |
8548 | STRLEN dotstrlen = 1; | |
211dfcf1 | 8549 | I32 efix = 0; /* explicit format parameter index */ |
eb3fce90 | 8550 | I32 ewix = 0; /* explicit width index */ |
211dfcf1 HS |
8551 | I32 epix = 0; /* explicit precision index */ |
8552 | I32 evix = 0; /* explicit vector index */ | |
eb3fce90 | 8553 | bool asterisk = FALSE; |
46fc3d4c | 8554 | |
211dfcf1 | 8555 | /* echo everything up to the next format specification */ |
46fc3d4c | 8556 | for (q = p; q < patend && *q != '%'; ++q) ; |
8557 | if (q > p) { | |
db79b45b JH |
8558 | if (has_utf8 && !pat_utf8) |
8559 | sv_catpvn_utf8_upgrade(sv, p, q - p, nsv); | |
8560 | else | |
8561 | sv_catpvn(sv, p, q - p); | |
46fc3d4c | 8562 | p = q; |
8563 | } | |
8564 | if (q++ >= patend) | |
8565 | break; | |
8566 | ||
211dfcf1 HS |
8567 | /* |
8568 | We allow format specification elements in this order: | |
8569 | \d+\$ explicit format parameter index | |
8570 | [-+ 0#]+ flags | |
a472f209 | 8571 | v|\*(\d+\$)?v vector with optional (optionally specified) arg |
f3583277 | 8572 | 0 flag (as above): repeated to allow "v02" |
211dfcf1 HS |
8573 | \d+|\*(\d+\$)? width using optional (optionally specified) arg |
8574 | \.(\d*|\*(\d+\$)?) precision using optional (optionally specified) arg | |
8575 | [hlqLV] size | |
8576 | [%bcdefginopsux_DFOUX] format (mandatory) | |
8577 | */ | |
8578 | if (EXPECT_NUMBER(q, width)) { | |
8579 | if (*q == '$') { | |
8580 | ++q; | |
8581 | efix = width; | |
8582 | } else { | |
8583 | goto gotwidth; | |
8584 | } | |
8585 | } | |
8586 | ||
fc36a67e | 8587 | /* FLAGS */ |
8588 | ||
46fc3d4c | 8589 | while (*q) { |
8590 | switch (*q) { | |
8591 | case ' ': | |
8592 | case '+': | |
8593 | plus = *q++; | |
8594 | continue; | |
8595 | ||
8596 | case '-': | |
8597 | left = TRUE; | |
8598 | q++; | |
8599 | continue; | |
8600 | ||
8601 | case '0': | |
8602 | fill = *q++; | |
8603 | continue; | |
8604 | ||
8605 | case '#': | |
8606 | alt = TRUE; | |
8607 | q++; | |
8608 | continue; | |
8609 | ||
fc36a67e | 8610 | default: |
8611 | break; | |
8612 | } | |
8613 | break; | |
8614 | } | |
46fc3d4c | 8615 | |
211dfcf1 | 8616 | tryasterisk: |
eb3fce90 | 8617 | if (*q == '*') { |
211dfcf1 HS |
8618 | q++; |
8619 | if (EXPECT_NUMBER(q, ewix)) | |
8620 | if (*q++ != '$') | |
8621 | goto unknown; | |
eb3fce90 | 8622 | asterisk = TRUE; |
211dfcf1 HS |
8623 | } |
8624 | if (*q == 'v') { | |
eb3fce90 | 8625 | q++; |
211dfcf1 HS |
8626 | if (vectorize) |
8627 | goto unknown; | |
9cbac4c7 | 8628 | if ((vectorarg = asterisk)) { |
211dfcf1 HS |
8629 | evix = ewix; |
8630 | ewix = 0; | |
8631 | asterisk = FALSE; | |
8632 | } | |
8633 | vectorize = TRUE; | |
8634 | goto tryasterisk; | |
eb3fce90 JH |
8635 | } |
8636 | ||
211dfcf1 | 8637 | if (!asterisk) |
f3583277 RB |
8638 | if( *q == '0' ) |
8639 | fill = *q++; | |
211dfcf1 HS |
8640 | EXPECT_NUMBER(q, width); |
8641 | ||
8642 | if (vectorize) { | |
8643 | if (vectorarg) { | |
8644 | if (args) | |
8645 | vecsv = va_arg(*args, SV*); | |
8646 | else | |
8647 | vecsv = (evix ? evix <= svmax : svix < svmax) ? | |
8648 | svargs[ewix ? ewix-1 : svix++] : &PL_sv_undef; | |
4459522c | 8649 | dotstr = SvPVx(vecsv, dotstrlen); |
211dfcf1 | 8650 | if (DO_UTF8(vecsv)) |
2cf2cfc6 | 8651 | is_utf8 = TRUE; |
211dfcf1 HS |
8652 | } |
8653 | if (args) { | |
8654 | vecsv = va_arg(*args, SV*); | |
8655 | vecstr = (U8*)SvPVx(vecsv,veclen); | |
2cf2cfc6 | 8656 | vec_utf8 = DO_UTF8(vecsv); |
eb3fce90 | 8657 | } |
211dfcf1 HS |
8658 | else if (efix ? efix <= svmax : svix < svmax) { |
8659 | vecsv = svargs[efix ? efix-1 : svix++]; | |
8660 | vecstr = (U8*)SvPVx(vecsv,veclen); | |
2cf2cfc6 | 8661 | vec_utf8 = DO_UTF8(vecsv); |
211dfcf1 HS |
8662 | } |
8663 | else { | |
8664 | vecstr = (U8*)""; | |
8665 | veclen = 0; | |
8666 | } | |
eb3fce90 | 8667 | } |
fc36a67e | 8668 | |
eb3fce90 | 8669 | if (asterisk) { |
fc36a67e | 8670 | if (args) |
8671 | i = va_arg(*args, int); | |
8672 | else | |
eb3fce90 JH |
8673 | i = (ewix ? ewix <= svmax : svix < svmax) ? |
8674 | SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 8675 | left |= (i < 0); |
8676 | width = (i < 0) ? -i : i; | |
fc36a67e | 8677 | } |
211dfcf1 | 8678 | gotwidth: |
fc36a67e | 8679 | |
8680 | /* PRECISION */ | |
46fc3d4c | 8681 | |
fc36a67e | 8682 | if (*q == '.') { |
8683 | q++; | |
8684 | if (*q == '*') { | |
211dfcf1 | 8685 | q++; |
7b8dd722 HS |
8686 | if (EXPECT_NUMBER(q, epix) && *q++ != '$') |
8687 | goto unknown; | |
8688 | /* XXX: todo, support specified precision parameter */ | |
8689 | if (epix) | |
211dfcf1 | 8690 | goto unknown; |
46fc3d4c | 8691 | if (args) |
8692 | i = va_arg(*args, int); | |
8693 | else | |
eb3fce90 JH |
8694 | i = (ewix ? ewix <= svmax : svix < svmax) |
8695 | ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 8696 | precis = (i < 0) ? 0 : i; |
fc36a67e | 8697 | } |
8698 | else { | |
8699 | precis = 0; | |
8700 | while (isDIGIT(*q)) | |
8701 | precis = precis * 10 + (*q++ - '0'); | |
8702 | } | |
8703 | has_precis = TRUE; | |
8704 | } | |
46fc3d4c | 8705 | |
fc36a67e | 8706 | /* SIZE */ |
46fc3d4c | 8707 | |
fc36a67e | 8708 | switch (*q) { |
c623ac67 GS |
8709 | #ifdef WIN32 |
8710 | case 'I': /* Ix, I32x, and I64x */ | |
8711 | # ifdef WIN64 | |
8712 | if (q[1] == '6' && q[2] == '4') { | |
8713 | q += 3; | |
8714 | intsize = 'q'; | |
8715 | break; | |
8716 | } | |
8717 | # endif | |
8718 | if (q[1] == '3' && q[2] == '2') { | |
8719 | q += 3; | |
8720 | break; | |
8721 | } | |
8722 | # ifdef WIN64 | |
8723 | intsize = 'q'; | |
8724 | # endif | |
8725 | q++; | |
8726 | break; | |
8727 | #endif | |
9e5b023a | 8728 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
6f9bb7fd | 8729 | case 'L': /* Ld */ |
e5c81feb | 8730 | /* FALL THROUGH */ |
e5c81feb | 8731 | #ifdef HAS_QUAD |
6f9bb7fd | 8732 | case 'q': /* qd */ |
9e5b023a | 8733 | #endif |
6f9bb7fd GS |
8734 | intsize = 'q'; |
8735 | q++; | |
8736 | break; | |
8737 | #endif | |
fc36a67e | 8738 | case 'l': |
9e5b023a | 8739 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
205f51d8 | 8740 | if (*(q + 1) == 'l') { /* lld, llf */ |
fc36a67e | 8741 | intsize = 'q'; |
8742 | q += 2; | |
46fc3d4c | 8743 | break; |
cf2093f6 | 8744 | } |
fc36a67e | 8745 | #endif |
6f9bb7fd | 8746 | /* FALL THROUGH */ |
fc36a67e | 8747 | case 'h': |
cf2093f6 | 8748 | /* FALL THROUGH */ |
fc36a67e | 8749 | case 'V': |
8750 | intsize = *q++; | |
46fc3d4c | 8751 | break; |
8752 | } | |
8753 | ||
fc36a67e | 8754 | /* CONVERSION */ |
8755 | ||
211dfcf1 HS |
8756 | if (*q == '%') { |
8757 | eptr = q++; | |
8758 | elen = 1; | |
8759 | goto string; | |
8760 | } | |
8761 | ||
be75b157 HS |
8762 | if (vectorize) |
8763 | argsv = vecsv; | |
8764 | else if (!args) | |
211dfcf1 HS |
8765 | argsv = (efix ? efix <= svmax : svix < svmax) ? |
8766 | svargs[efix ? efix-1 : svix++] : &PL_sv_undef; | |
8767 | ||
46fc3d4c | 8768 | switch (c = *q++) { |
8769 | ||
8770 | /* STRINGS */ | |
8771 | ||
46fc3d4c | 8772 | case 'c': |
be75b157 | 8773 | uv = (args && !vectorize) ? va_arg(*args, int) : SvIVx(argsv); |
1bd104fb JH |
8774 | if ((uv > 255 || |
8775 | (!UNI_IS_INVARIANT(uv) && SvUTF8(sv))) | |
0064a8a9 | 8776 | && !IN_BYTES) { |
dfe13c55 | 8777 | eptr = (char*)utf8buf; |
9041c2e3 | 8778 | elen = uvchr_to_utf8((U8*)eptr, uv) - utf8buf; |
2cf2cfc6 | 8779 | is_utf8 = TRUE; |
7e2040f0 GS |
8780 | } |
8781 | else { | |
8782 | c = (char)uv; | |
8783 | eptr = &c; | |
8784 | elen = 1; | |
a0ed51b3 | 8785 | } |
46fc3d4c | 8786 | goto string; |
8787 | ||
46fc3d4c | 8788 | case 's': |
be75b157 | 8789 | if (args && !vectorize) { |
fc36a67e | 8790 | eptr = va_arg(*args, char*); |
c635e13b | 8791 | if (eptr) |
1d7c1841 GS |
8792 | #ifdef MACOS_TRADITIONAL |
8793 | /* On MacOS, %#s format is used for Pascal strings */ | |
8794 | if (alt) | |
8795 | elen = *eptr++; | |
8796 | else | |
8797 | #endif | |
c635e13b | 8798 | elen = strlen(eptr); |
8799 | else { | |
8800 | eptr = nullstr; | |
8801 | elen = sizeof nullstr - 1; | |
8802 | } | |
46fc3d4c | 8803 | } |
211dfcf1 | 8804 | else { |
7e2040f0 GS |
8805 | eptr = SvPVx(argsv, elen); |
8806 | if (DO_UTF8(argsv)) { | |
a0ed51b3 LW |
8807 | if (has_precis && precis < elen) { |
8808 | I32 p = precis; | |
7e2040f0 | 8809 | sv_pos_u2b(argsv, &p, 0); /* sticks at end */ |
a0ed51b3 LW |
8810 | precis = p; |
8811 | } | |
8812 | if (width) { /* fudge width (can't fudge elen) */ | |
7e2040f0 | 8813 | width += elen - sv_len_utf8(argsv); |
a0ed51b3 | 8814 | } |
2cf2cfc6 | 8815 | is_utf8 = TRUE; |
a0ed51b3 LW |
8816 | } |
8817 | } | |
46fc3d4c | 8818 | goto string; |
8819 | ||
fc36a67e | 8820 | case '_': |
8821 | /* | |
8822 | * The "%_" hack might have to be changed someday, | |
8823 | * if ISO or ANSI decide to use '_' for something. | |
8824 | * So we keep it hidden from users' code. | |
8825 | */ | |
be75b157 | 8826 | if (!args || vectorize) |
fc36a67e | 8827 | goto unknown; |
211dfcf1 | 8828 | argsv = va_arg(*args, SV*); |
7e2040f0 GS |
8829 | eptr = SvPVx(argsv, elen); |
8830 | if (DO_UTF8(argsv)) | |
2cf2cfc6 | 8831 | is_utf8 = TRUE; |
fc36a67e | 8832 | |
46fc3d4c | 8833 | string: |
b22c7a20 | 8834 | vectorize = FALSE; |
46fc3d4c | 8835 | if (has_precis && elen > precis) |
8836 | elen = precis; | |
8837 | break; | |
8838 | ||
8839 | /* INTEGERS */ | |
8840 | ||
fc36a67e | 8841 | case 'p': |
be75b157 | 8842 | if (alt || vectorize) |
c2e66d9e | 8843 | goto unknown; |
211dfcf1 | 8844 | uv = PTR2UV(args ? va_arg(*args, void*) : argsv); |
fc36a67e | 8845 | base = 16; |
8846 | goto integer; | |
8847 | ||
46fc3d4c | 8848 | case 'D': |
29fe7a80 | 8849 | #ifdef IV_IS_QUAD |
22f3ae8c | 8850 | intsize = 'q'; |
29fe7a80 | 8851 | #else |
46fc3d4c | 8852 | intsize = 'l'; |
29fe7a80 | 8853 | #endif |
46fc3d4c | 8854 | /* FALL THROUGH */ |
8855 | case 'd': | |
8856 | case 'i': | |
b22c7a20 | 8857 | if (vectorize) { |
ba210ebe | 8858 | STRLEN ulen; |
211dfcf1 HS |
8859 | if (!veclen) |
8860 | continue; | |
2cf2cfc6 A |
8861 | if (vec_utf8) |
8862 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
8863 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 8864 | else { |
e83d50c9 | 8865 | uv = *vecstr; |
b22c7a20 GS |
8866 | ulen = 1; |
8867 | } | |
8868 | vecstr += ulen; | |
8869 | veclen -= ulen; | |
e83d50c9 JP |
8870 | if (plus) |
8871 | esignbuf[esignlen++] = plus; | |
b22c7a20 GS |
8872 | } |
8873 | else if (args) { | |
46fc3d4c | 8874 | switch (intsize) { |
8875 | case 'h': iv = (short)va_arg(*args, int); break; | |
8876 | default: iv = va_arg(*args, int); break; | |
8877 | case 'l': iv = va_arg(*args, long); break; | |
fc36a67e | 8878 | case 'V': iv = va_arg(*args, IV); break; |
cf2093f6 JH |
8879 | #ifdef HAS_QUAD |
8880 | case 'q': iv = va_arg(*args, Quad_t); break; | |
8881 | #endif | |
46fc3d4c | 8882 | } |
8883 | } | |
8884 | else { | |
211dfcf1 | 8885 | iv = SvIVx(argsv); |
46fc3d4c | 8886 | switch (intsize) { |
8887 | case 'h': iv = (short)iv; break; | |
be28567c | 8888 | default: break; |
46fc3d4c | 8889 | case 'l': iv = (long)iv; break; |
fc36a67e | 8890 | case 'V': break; |
cf2093f6 JH |
8891 | #ifdef HAS_QUAD |
8892 | case 'q': iv = (Quad_t)iv; break; | |
8893 | #endif | |
46fc3d4c | 8894 | } |
8895 | } | |
e83d50c9 JP |
8896 | if ( !vectorize ) /* we already set uv above */ |
8897 | { | |
8898 | if (iv >= 0) { | |
8899 | uv = iv; | |
8900 | if (plus) | |
8901 | esignbuf[esignlen++] = plus; | |
8902 | } | |
8903 | else { | |
8904 | uv = -iv; | |
8905 | esignbuf[esignlen++] = '-'; | |
8906 | } | |
46fc3d4c | 8907 | } |
8908 | base = 10; | |
8909 | goto integer; | |
8910 | ||
fc36a67e | 8911 | case 'U': |
29fe7a80 | 8912 | #ifdef IV_IS_QUAD |
22f3ae8c | 8913 | intsize = 'q'; |
29fe7a80 | 8914 | #else |
fc36a67e | 8915 | intsize = 'l'; |
29fe7a80 | 8916 | #endif |
fc36a67e | 8917 | /* FALL THROUGH */ |
8918 | case 'u': | |
8919 | base = 10; | |
8920 | goto uns_integer; | |
8921 | ||
4f19785b WSI |
8922 | case 'b': |
8923 | base = 2; | |
8924 | goto uns_integer; | |
8925 | ||
46fc3d4c | 8926 | case 'O': |
29fe7a80 | 8927 | #ifdef IV_IS_QUAD |
22f3ae8c | 8928 | intsize = 'q'; |
29fe7a80 | 8929 | #else |
46fc3d4c | 8930 | intsize = 'l'; |
29fe7a80 | 8931 | #endif |
46fc3d4c | 8932 | /* FALL THROUGH */ |
8933 | case 'o': | |
8934 | base = 8; | |
8935 | goto uns_integer; | |
8936 | ||
8937 | case 'X': | |
46fc3d4c | 8938 | case 'x': |
8939 | base = 16; | |
46fc3d4c | 8940 | |
8941 | uns_integer: | |
b22c7a20 | 8942 | if (vectorize) { |
ba210ebe | 8943 | STRLEN ulen; |
b22c7a20 | 8944 | vector: |
211dfcf1 HS |
8945 | if (!veclen) |
8946 | continue; | |
2cf2cfc6 A |
8947 | if (vec_utf8) |
8948 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
8949 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 8950 | else { |
a05b299f | 8951 | uv = *vecstr; |
b22c7a20 GS |
8952 | ulen = 1; |
8953 | } | |
8954 | vecstr += ulen; | |
8955 | veclen -= ulen; | |
8956 | } | |
8957 | else if (args) { | |
46fc3d4c | 8958 | switch (intsize) { |
8959 | case 'h': uv = (unsigned short)va_arg(*args, unsigned); break; | |
8960 | default: uv = va_arg(*args, unsigned); break; | |
8961 | case 'l': uv = va_arg(*args, unsigned long); break; | |
fc36a67e | 8962 | case 'V': uv = va_arg(*args, UV); break; |
cf2093f6 JH |
8963 | #ifdef HAS_QUAD |
8964 | case 'q': uv = va_arg(*args, Quad_t); break; | |
8965 | #endif | |
46fc3d4c | 8966 | } |
8967 | } | |
8968 | else { | |
211dfcf1 | 8969 | uv = SvUVx(argsv); |
46fc3d4c | 8970 | switch (intsize) { |
8971 | case 'h': uv = (unsigned short)uv; break; | |
be28567c | 8972 | default: break; |
46fc3d4c | 8973 | case 'l': uv = (unsigned long)uv; break; |
fc36a67e | 8974 | case 'V': break; |
cf2093f6 JH |
8975 | #ifdef HAS_QUAD |
8976 | case 'q': uv = (Quad_t)uv; break; | |
8977 | #endif | |
46fc3d4c | 8978 | } |
8979 | } | |
8980 | ||
8981 | integer: | |
46fc3d4c | 8982 | eptr = ebuf + sizeof ebuf; |
fc36a67e | 8983 | switch (base) { |
8984 | unsigned dig; | |
8985 | case 16: | |
c10ed8b9 HS |
8986 | if (!uv) |
8987 | alt = FALSE; | |
1d7c1841 GS |
8988 | p = (char*)((c == 'X') |
8989 | ? "0123456789ABCDEF" : "0123456789abcdef"); | |
fc36a67e | 8990 | do { |
8991 | dig = uv & 15; | |
8992 | *--eptr = p[dig]; | |
8993 | } while (uv >>= 4); | |
8994 | if (alt) { | |
46fc3d4c | 8995 | esignbuf[esignlen++] = '0'; |
fc36a67e | 8996 | esignbuf[esignlen++] = c; /* 'x' or 'X' */ |
46fc3d4c | 8997 | } |
fc36a67e | 8998 | break; |
8999 | case 8: | |
9000 | do { | |
9001 | dig = uv & 7; | |
9002 | *--eptr = '0' + dig; | |
9003 | } while (uv >>= 3); | |
9004 | if (alt && *eptr != '0') | |
9005 | *--eptr = '0'; | |
9006 | break; | |
4f19785b WSI |
9007 | case 2: |
9008 | do { | |
9009 | dig = uv & 1; | |
9010 | *--eptr = '0' + dig; | |
9011 | } while (uv >>= 1); | |
eda88b6d JH |
9012 | if (alt) { |
9013 | esignbuf[esignlen++] = '0'; | |
7481bb52 | 9014 | esignbuf[esignlen++] = 'b'; |
eda88b6d | 9015 | } |
4f19785b | 9016 | break; |
fc36a67e | 9017 | default: /* it had better be ten or less */ |
6bc102ca | 9018 | #if defined(PERL_Y2KWARN) |
e476b1b5 | 9019 | if (ckWARN(WARN_Y2K)) { |
6bc102ca GS |
9020 | STRLEN n; |
9021 | char *s = SvPV(sv,n); | |
9022 | if (n >= 2 && s[n-2] == '1' && s[n-1] == '9' | |
9023 | && (n == 2 || !isDIGIT(s[n-3]))) | |
9024 | { | |
9014280d | 9025 | Perl_warner(aTHX_ packWARN(WARN_Y2K), |
6bc102ca GS |
9026 | "Possible Y2K bug: %%%c %s", |
9027 | c, "format string following '19'"); | |
9028 | } | |
9029 | } | |
9030 | #endif | |
fc36a67e | 9031 | do { |
9032 | dig = uv % base; | |
9033 | *--eptr = '0' + dig; | |
9034 | } while (uv /= base); | |
9035 | break; | |
46fc3d4c | 9036 | } |
9037 | elen = (ebuf + sizeof ebuf) - eptr; | |
c10ed8b9 HS |
9038 | if (has_precis) { |
9039 | if (precis > elen) | |
9040 | zeros = precis - elen; | |
9041 | else if (precis == 0 && elen == 1 && *eptr == '0') | |
9042 | elen = 0; | |
9043 | } | |
46fc3d4c | 9044 | break; |
9045 | ||
9046 | /* FLOATING POINT */ | |
9047 | ||
fc36a67e | 9048 | case 'F': |
9049 | c = 'f'; /* maybe %F isn't supported here */ | |
9050 | /* FALL THROUGH */ | |
46fc3d4c | 9051 | case 'e': case 'E': |
fc36a67e | 9052 | case 'f': |
46fc3d4c | 9053 | case 'g': case 'G': |
9054 | ||
9055 | /* This is evil, but floating point is even more evil */ | |
9056 | ||
9e5b023a JH |
9057 | /* for SV-style calling, we can only get NV |
9058 | for C-style calling, we assume %f is double; | |
9059 | for simplicity we allow any of %Lf, %llf, %qf for long double | |
9060 | */ | |
9061 | switch (intsize) { | |
9062 | case 'V': | |
9063 | #if defined(USE_LONG_DOUBLE) | |
9064 | intsize = 'q'; | |
9065 | #endif | |
9066 | break; | |
8a2e3f14 | 9067 | /* [perl #20339] - we should accept and ignore %lf rather than die */ |
00e17364 HS |
9068 | case 'l': |
9069 | /* FALL THROUGH */ | |
9e5b023a JH |
9070 | default: |
9071 | #if defined(USE_LONG_DOUBLE) | |
9072 | intsize = args ? 0 : 'q'; | |
9073 | #endif | |
9074 | break; | |
9075 | case 'q': | |
9076 | #if defined(HAS_LONG_DOUBLE) | |
9077 | break; | |
9078 | #else | |
9079 | /* FALL THROUGH */ | |
9080 | #endif | |
9081 | case 'h': | |
9e5b023a JH |
9082 | goto unknown; |
9083 | } | |
9084 | ||
9085 | /* now we need (long double) if intsize == 'q', else (double) */ | |
be75b157 | 9086 | nv = (args && !vectorize) ? |
35fff930 JH |
9087 | #if LONG_DOUBLESIZE > DOUBLESIZE |
9088 | intsize == 'q' ? | |
205f51d8 AS |
9089 | va_arg(*args, long double) : |
9090 | va_arg(*args, double) | |
35fff930 | 9091 | #else |
205f51d8 | 9092 | va_arg(*args, double) |
35fff930 | 9093 | #endif |
9e5b023a | 9094 | : SvNVx(argsv); |
fc36a67e | 9095 | |
9096 | need = 0; | |
be75b157 | 9097 | vectorize = FALSE; |
fc36a67e | 9098 | if (c != 'e' && c != 'E') { |
9099 | i = PERL_INT_MIN; | |
9e5b023a JH |
9100 | /* FIXME: if HAS_LONG_DOUBLE but not USE_LONG_DOUBLE this |
9101 | will cast our (long double) to (double) */ | |
73b309ea | 9102 | (void)Perl_frexp(nv, &i); |
fc36a67e | 9103 | if (i == PERL_INT_MIN) |
cea2e8a9 | 9104 | Perl_die(aTHX_ "panic: frexp"); |
c635e13b | 9105 | if (i > 0) |
fc36a67e | 9106 | need = BIT_DIGITS(i); |
9107 | } | |
9108 | need += has_precis ? precis : 6; /* known default */ | |
20f6aaab | 9109 | |
fc36a67e | 9110 | if (need < width) |
9111 | need = width; | |
9112 | ||
20f6aaab AS |
9113 | #ifdef HAS_LDBL_SPRINTF_BUG |
9114 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 AS |
9115 | with sfio - Allen <allens@cpan.org> */ |
9116 | ||
9117 | # ifdef DBL_MAX | |
9118 | # define MY_DBL_MAX DBL_MAX | |
9119 | # else /* XXX guessing! HUGE_VAL may be defined as infinity, so not using */ | |
9120 | # if DOUBLESIZE >= 8 | |
9121 | # define MY_DBL_MAX 1.7976931348623157E+308L | |
9122 | # else | |
9123 | # define MY_DBL_MAX 3.40282347E+38L | |
9124 | # endif | |
9125 | # endif | |
9126 | ||
9127 | # ifdef HAS_LDBL_SPRINTF_BUG_LESS1 /* only between -1L & 1L - Allen */ | |
9128 | # define MY_DBL_MAX_BUG 1L | |
20f6aaab | 9129 | # else |
205f51d8 | 9130 | # define MY_DBL_MAX_BUG MY_DBL_MAX |
20f6aaab | 9131 | # endif |
20f6aaab | 9132 | |
205f51d8 AS |
9133 | # ifdef DBL_MIN |
9134 | # define MY_DBL_MIN DBL_MIN | |
9135 | # else /* XXX guessing! -Allen */ | |
9136 | # if DOUBLESIZE >= 8 | |
9137 | # define MY_DBL_MIN 2.2250738585072014E-308L | |
9138 | # else | |
9139 | # define MY_DBL_MIN 1.17549435E-38L | |
9140 | # endif | |
9141 | # endif | |
20f6aaab | 9142 | |
205f51d8 AS |
9143 | if ((intsize == 'q') && (c == 'f') && |
9144 | ((nv < MY_DBL_MAX_BUG) && (nv > -MY_DBL_MAX_BUG)) && | |
9145 | (need < DBL_DIG)) { | |
9146 | /* it's going to be short enough that | |
9147 | * long double precision is not needed */ | |
9148 | ||
9149 | if ((nv <= 0L) && (nv >= -0L)) | |
9150 | fix_ldbl_sprintf_bug = TRUE; /* 0 is 0 - easiest */ | |
9151 | else { | |
9152 | /* would use Perl_fp_class as a double-check but not | |
9153 | * functional on IRIX - see perl.h comments */ | |
9154 | ||
9155 | if ((nv >= MY_DBL_MIN) || (nv <= -MY_DBL_MIN)) { | |
9156 | /* It's within the range that a double can represent */ | |
9157 | #if defined(DBL_MAX) && !defined(DBL_MIN) | |
9158 | if ((nv >= ((long double)1/DBL_MAX)) || | |
9159 | (nv <= (-(long double)1/DBL_MAX))) | |
20f6aaab | 9160 | #endif |
205f51d8 | 9161 | fix_ldbl_sprintf_bug = TRUE; |
20f6aaab | 9162 | } |
205f51d8 AS |
9163 | } |
9164 | if (fix_ldbl_sprintf_bug == TRUE) { | |
9165 | double temp; | |
9166 | ||
9167 | intsize = 0; | |
9168 | temp = (double)nv; | |
9169 | nv = (NV)temp; | |
9170 | } | |
20f6aaab | 9171 | } |
205f51d8 AS |
9172 | |
9173 | # undef MY_DBL_MAX | |
9174 | # undef MY_DBL_MAX_BUG | |
9175 | # undef MY_DBL_MIN | |
9176 | ||
20f6aaab AS |
9177 | #endif /* HAS_LDBL_SPRINTF_BUG */ |
9178 | ||
46fc3d4c | 9179 | need += 20; /* fudge factor */ |
80252599 GS |
9180 | if (PL_efloatsize < need) { |
9181 | Safefree(PL_efloatbuf); | |
9182 | PL_efloatsize = need + 20; /* more fudge */ | |
9183 | New(906, PL_efloatbuf, PL_efloatsize, char); | |
7d5ea4e7 | 9184 | PL_efloatbuf[0] = '\0'; |
46fc3d4c | 9185 | } |
9186 | ||
9187 | eptr = ebuf + sizeof ebuf; | |
9188 | *--eptr = '\0'; | |
9189 | *--eptr = c; | |
9e5b023a JH |
9190 | /* FIXME: what to do if HAS_LONG_DOUBLE but not PERL_PRIfldbl? */ |
9191 | #if defined(HAS_LONG_DOUBLE) && defined(PERL_PRIfldbl) | |
9192 | if (intsize == 'q') { | |
e5c81feb JH |
9193 | /* Copy the one or more characters in a long double |
9194 | * format before the 'base' ([efgEFG]) character to | |
9195 | * the format string. */ | |
9196 | static char const prifldbl[] = PERL_PRIfldbl; | |
9197 | char const *p = prifldbl + sizeof(prifldbl) - 3; | |
9198 | while (p >= prifldbl) { *--eptr = *p--; } | |
cf2093f6 | 9199 | } |
65202027 | 9200 | #endif |
46fc3d4c | 9201 | if (has_precis) { |
9202 | base = precis; | |
9203 | do { *--eptr = '0' + (base % 10); } while (base /= 10); | |
9204 | *--eptr = '.'; | |
9205 | } | |
9206 | if (width) { | |
9207 | base = width; | |
9208 | do { *--eptr = '0' + (base % 10); } while (base /= 10); | |
9209 | } | |
9210 | if (fill == '0') | |
9211 | *--eptr = fill; | |
84902520 TB |
9212 | if (left) |
9213 | *--eptr = '-'; | |
46fc3d4c | 9214 | if (plus) |
9215 | *--eptr = plus; | |
9216 | if (alt) | |
9217 | *--eptr = '#'; | |
9218 | *--eptr = '%'; | |
9219 | ||
ff9121f8 JH |
9220 | /* No taint. Otherwise we are in the strange situation |
9221 | * where printf() taints but print($float) doesn't. | |
bda0f7a5 | 9222 | * --jhi */ |
9e5b023a JH |
9223 | #if defined(HAS_LONG_DOUBLE) |
9224 | if (intsize == 'q') | |
9225 | (void)sprintf(PL_efloatbuf, eptr, nv); | |
9226 | else | |
9227 | (void)sprintf(PL_efloatbuf, eptr, (double)nv); | |
9228 | #else | |
dd8482fc | 9229 | (void)sprintf(PL_efloatbuf, eptr, nv); |
9e5b023a | 9230 | #endif |
80252599 GS |
9231 | eptr = PL_efloatbuf; |
9232 | elen = strlen(PL_efloatbuf); | |
46fc3d4c | 9233 | break; |
9234 | ||
fc36a67e | 9235 | /* SPECIAL */ |
9236 | ||
9237 | case 'n': | |
9238 | i = SvCUR(sv) - origlen; | |
be75b157 | 9239 | if (args && !vectorize) { |
c635e13b | 9240 | switch (intsize) { |
9241 | case 'h': *(va_arg(*args, short*)) = i; break; | |
9242 | default: *(va_arg(*args, int*)) = i; break; | |
9243 | case 'l': *(va_arg(*args, long*)) = i; break; | |
9244 | case 'V': *(va_arg(*args, IV*)) = i; break; | |
cf2093f6 JH |
9245 | #ifdef HAS_QUAD |
9246 | case 'q': *(va_arg(*args, Quad_t*)) = i; break; | |
9247 | #endif | |
c635e13b | 9248 | } |
fc36a67e | 9249 | } |
9dd79c3f | 9250 | else |
211dfcf1 | 9251 | sv_setuv_mg(argsv, (UV)i); |
be75b157 | 9252 | vectorize = FALSE; |
fc36a67e | 9253 | continue; /* not "break" */ |
9254 | ||
9255 | /* UNKNOWN */ | |
9256 | ||
46fc3d4c | 9257 | default: |
fc36a67e | 9258 | unknown: |
599cee73 | 9259 | if (!args && ckWARN(WARN_PRINTF) && |
533c011a | 9260 | (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) { |
c635e13b | 9261 | SV *msg = sv_newmortal(); |
35c1215d NC |
9262 | Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %sprintf: ", |
9263 | (PL_op->op_type == OP_PRTF) ? "" : "s"); | |
0f4b6630 | 9264 | if (c) { |
0f4b6630 | 9265 | if (isPRINT(c)) |
1c846c1f | 9266 | Perl_sv_catpvf(aTHX_ msg, |
0f4b6630 JH |
9267 | "\"%%%c\"", c & 0xFF); |
9268 | else | |
9269 | Perl_sv_catpvf(aTHX_ msg, | |
57def98f | 9270 | "\"%%\\%03"UVof"\"", |
0f4b6630 | 9271 | (UV)c & 0xFF); |
0f4b6630 | 9272 | } else |
c635e13b | 9273 | sv_catpv(msg, "end of string"); |
9014280d | 9274 | Perl_warner(aTHX_ packWARN(WARN_PRINTF), "%"SVf, msg); /* yes, this is reentrant */ |
c635e13b | 9275 | } |
fb73857a | 9276 | |
9277 | /* output mangled stuff ... */ | |
9278 | if (c == '\0') | |
9279 | --q; | |
46fc3d4c | 9280 | eptr = p; |
9281 | elen = q - p; | |
fb73857a | 9282 | |
9283 | /* ... right here, because formatting flags should not apply */ | |
9284 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
9285 | p = SvEND(sv); | |
4459522c | 9286 | Copy(eptr, p, elen, char); |
fb73857a | 9287 | p += elen; |
9288 | *p = '\0'; | |
9289 | SvCUR(sv) = p - SvPVX(sv); | |
58e33a90 | 9290 | svix = osvix; |
fb73857a | 9291 | continue; /* not "break" */ |
46fc3d4c | 9292 | } |
9293 | ||
d2876be5 JH |
9294 | if (is_utf8 != has_utf8) { |
9295 | if (is_utf8) { | |
9296 | if (SvCUR(sv)) | |
9297 | sv_utf8_upgrade(sv); | |
9298 | } | |
9299 | else { | |
9300 | SV *nsv = sv_2mortal(newSVpvn(eptr, elen)); | |
9301 | sv_utf8_upgrade(nsv); | |
9302 | eptr = SvPVX(nsv); | |
9303 | elen = SvCUR(nsv); | |
9304 | } | |
9305 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
9306 | p = SvEND(sv); | |
9307 | *p = '\0'; | |
9308 | } | |
9309 | ||
fc36a67e | 9310 | have = esignlen + zeros + elen; |
46fc3d4c | 9311 | need = (have > width ? have : width); |
9312 | gap = need - have; | |
9313 | ||
b22c7a20 | 9314 | SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1); |
46fc3d4c | 9315 | p = SvEND(sv); |
9316 | if (esignlen && fill == '0') { | |
eb160463 | 9317 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 9318 | *p++ = esignbuf[i]; |
9319 | } | |
9320 | if (gap && !left) { | |
9321 | memset(p, fill, gap); | |
9322 | p += gap; | |
9323 | } | |
9324 | if (esignlen && fill != '0') { | |
eb160463 | 9325 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 9326 | *p++ = esignbuf[i]; |
9327 | } | |
fc36a67e | 9328 | if (zeros) { |
9329 | for (i = zeros; i; i--) | |
9330 | *p++ = '0'; | |
9331 | } | |
46fc3d4c | 9332 | if (elen) { |
4459522c | 9333 | Copy(eptr, p, elen, char); |
46fc3d4c | 9334 | p += elen; |
9335 | } | |
9336 | if (gap && left) { | |
9337 | memset(p, ' ', gap); | |
9338 | p += gap; | |
9339 | } | |
b22c7a20 GS |
9340 | if (vectorize) { |
9341 | if (veclen) { | |
4459522c | 9342 | Copy(dotstr, p, dotstrlen, char); |
b22c7a20 GS |
9343 | p += dotstrlen; |
9344 | } | |
9345 | else | |
9346 | vectorize = FALSE; /* done iterating over vecstr */ | |
9347 | } | |
2cf2cfc6 A |
9348 | if (is_utf8) |
9349 | has_utf8 = TRUE; | |
9350 | if (has_utf8) | |
7e2040f0 | 9351 | SvUTF8_on(sv); |
46fc3d4c | 9352 | *p = '\0'; |
9353 | SvCUR(sv) = p - SvPVX(sv); | |
b22c7a20 GS |
9354 | if (vectorize) { |
9355 | esignlen = 0; | |
9356 | goto vector; | |
9357 | } | |
46fc3d4c | 9358 | } |
9359 | } | |
51371543 | 9360 | |
645c22ef DM |
9361 | /* ========================================================================= |
9362 | ||
9363 | =head1 Cloning an interpreter | |
9364 | ||
9365 | All the macros and functions in this section are for the private use of | |
9366 | the main function, perl_clone(). | |
9367 | ||
9368 | The foo_dup() functions make an exact copy of an existing foo thinngy. | |
9369 | During the course of a cloning, a hash table is used to map old addresses | |
9370 | to new addresses. The table is created and manipulated with the | |
9371 | ptr_table_* functions. | |
9372 | ||
9373 | =cut | |
9374 | ||
9375 | ============================================================================*/ | |
9376 | ||
9377 | ||
1d7c1841 GS |
9378 | #if defined(USE_ITHREADS) |
9379 | ||
1d7c1841 GS |
9380 | #ifndef GpREFCNT_inc |
9381 | # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL) | |
9382 | #endif | |
9383 | ||
9384 | ||
d2d73c3e AB |
9385 | #define sv_dup_inc(s,t) SvREFCNT_inc(sv_dup(s,t)) |
9386 | #define av_dup(s,t) (AV*)sv_dup((SV*)s,t) | |
9387 | #define av_dup_inc(s,t) (AV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9388 | #define hv_dup(s,t) (HV*)sv_dup((SV*)s,t) | |
9389 | #define hv_dup_inc(s,t) (HV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9390 | #define cv_dup(s,t) (CV*)sv_dup((SV*)s,t) | |
9391 | #define cv_dup_inc(s,t) (CV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9392 | #define io_dup(s,t) (IO*)sv_dup((SV*)s,t) | |
9393 | #define io_dup_inc(s,t) (IO*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9394 | #define gv_dup(s,t) (GV*)sv_dup((SV*)s,t) | |
9395 | #define gv_dup_inc(s,t) (GV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
1d7c1841 GS |
9396 | #define SAVEPV(p) (p ? savepv(p) : Nullch) |
9397 | #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch) | |
8cf8f3d1 | 9398 | |
d2d73c3e | 9399 | |
d2f185dc AMS |
9400 | /* Duplicate a regexp. Required reading: pregcomp() and pregfree() in |
9401 | regcomp.c. AMS 20010712 */ | |
645c22ef | 9402 | |
1d7c1841 | 9403 | REGEXP * |
a8fc9800 | 9404 | Perl_re_dup(pTHX_ REGEXP *r, CLONE_PARAMS *param) |
1d7c1841 | 9405 | { |
d2f185dc AMS |
9406 | REGEXP *ret; |
9407 | int i, len, npar; | |
9408 | struct reg_substr_datum *s; | |
9409 | ||
9410 | if (!r) | |
9411 | return (REGEXP *)NULL; | |
9412 | ||
9413 | if ((ret = (REGEXP *)ptr_table_fetch(PL_ptr_table, r))) | |
9414 | return ret; | |
9415 | ||
9416 | len = r->offsets[0]; | |
9417 | npar = r->nparens+1; | |
9418 | ||
9419 | Newc(0, ret, sizeof(regexp) + (len+1)*sizeof(regnode), char, regexp); | |
9420 | Copy(r->program, ret->program, len+1, regnode); | |
9421 | ||
9422 | New(0, ret->startp, npar, I32); | |
9423 | Copy(r->startp, ret->startp, npar, I32); | |
9424 | New(0, ret->endp, npar, I32); | |
9425 | Copy(r->startp, ret->startp, npar, I32); | |
9426 | ||
d2f185dc AMS |
9427 | New(0, ret->substrs, 1, struct reg_substr_data); |
9428 | for (s = ret->substrs->data, i = 0; i < 3; i++, s++) { | |
9429 | s->min_offset = r->substrs->data[i].min_offset; | |
9430 | s->max_offset = r->substrs->data[i].max_offset; | |
9431 | s->substr = sv_dup_inc(r->substrs->data[i].substr, param); | |
33b8afdf | 9432 | s->utf8_substr = sv_dup_inc(r->substrs->data[i].utf8_substr, param); |
d2f185dc AMS |
9433 | } |
9434 | ||
70612e96 | 9435 | ret->regstclass = NULL; |
d2f185dc AMS |
9436 | if (r->data) { |
9437 | struct reg_data *d; | |
9438 | int count = r->data->count; | |
9439 | ||
9440 | Newc(0, d, sizeof(struct reg_data) + count*sizeof(void *), | |
9441 | char, struct reg_data); | |
9442 | New(0, d->what, count, U8); | |
9443 | ||
9444 | d->count = count; | |
9445 | for (i = 0; i < count; i++) { | |
9446 | d->what[i] = r->data->what[i]; | |
9447 | switch (d->what[i]) { | |
9448 | case 's': | |
9449 | d->data[i] = sv_dup_inc((SV *)r->data->data[i], param); | |
9450 | break; | |
9451 | case 'p': | |
9452 | d->data[i] = av_dup_inc((AV *)r->data->data[i], param); | |
9453 | break; | |
9454 | case 'f': | |
9455 | /* This is cheating. */ | |
9456 | New(0, d->data[i], 1, struct regnode_charclass_class); | |
9457 | StructCopy(r->data->data[i], d->data[i], | |
9458 | struct regnode_charclass_class); | |
70612e96 | 9459 | ret->regstclass = (regnode*)d->data[i]; |
d2f185dc AMS |
9460 | break; |
9461 | case 'o': | |
33773810 AMS |
9462 | /* Compiled op trees are readonly, and can thus be |
9463 | shared without duplication. */ | |
9b978d73 DM |
9464 | d->data[i] = (void*)OpREFCNT_inc((OP*)r->data->data[i]); |
9465 | break; | |
d2f185dc AMS |
9466 | case 'n': |
9467 | d->data[i] = r->data->data[i]; | |
9468 | break; | |
9469 | } | |
9470 | } | |
9471 | ||
9472 | ret->data = d; | |
9473 | } | |
9474 | else | |
9475 | ret->data = NULL; | |
9476 | ||
9477 | New(0, ret->offsets, 2*len+1, U32); | |
9478 | Copy(r->offsets, ret->offsets, 2*len+1, U32); | |
9479 | ||
9480 | ret->precomp = SAVEPV(r->precomp); | |
d2f185dc AMS |
9481 | ret->refcnt = r->refcnt; |
9482 | ret->minlen = r->minlen; | |
9483 | ret->prelen = r->prelen; | |
9484 | ret->nparens = r->nparens; | |
9485 | ret->lastparen = r->lastparen; | |
9486 | ret->lastcloseparen = r->lastcloseparen; | |
9487 | ret->reganch = r->reganch; | |
9488 | ||
70612e96 RG |
9489 | ret->sublen = r->sublen; |
9490 | ||
9491 | if (RX_MATCH_COPIED(ret)) | |
9492 | ret->subbeg = SAVEPV(r->subbeg); | |
9493 | else | |
9494 | ret->subbeg = Nullch; | |
9a26048b NC |
9495 | #ifdef PERL_COPY_ON_WRITE |
9496 | ret->saved_copy = Nullsv; | |
9497 | #endif | |
70612e96 | 9498 | |
d2f185dc AMS |
9499 | ptr_table_store(PL_ptr_table, r, ret); |
9500 | return ret; | |
1d7c1841 GS |
9501 | } |
9502 | ||
d2d73c3e | 9503 | /* duplicate a file handle */ |
645c22ef | 9504 | |
1d7c1841 | 9505 | PerlIO * |
a8fc9800 | 9506 | Perl_fp_dup(pTHX_ PerlIO *fp, char type, CLONE_PARAMS *param) |
1d7c1841 GS |
9507 | { |
9508 | PerlIO *ret; | |
9509 | if (!fp) | |
9510 | return (PerlIO*)NULL; | |
9511 | ||
9512 | /* look for it in the table first */ | |
9513 | ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp); | |
9514 | if (ret) | |
9515 | return ret; | |
9516 | ||
9517 | /* create anew and remember what it is */ | |
ecdeb87c | 9518 | ret = PerlIO_fdupopen(aTHX_ fp, param, PERLIO_DUP_CLONE); |
1d7c1841 GS |
9519 | ptr_table_store(PL_ptr_table, fp, ret); |
9520 | return ret; | |
9521 | } | |
9522 | ||
645c22ef DM |
9523 | /* duplicate a directory handle */ |
9524 | ||
1d7c1841 GS |
9525 | DIR * |
9526 | Perl_dirp_dup(pTHX_ DIR *dp) | |
9527 | { | |
9528 | if (!dp) | |
9529 | return (DIR*)NULL; | |
9530 | /* XXX TODO */ | |
9531 | return dp; | |
9532 | } | |
9533 | ||
ff276b08 | 9534 | /* duplicate a typeglob */ |
645c22ef | 9535 | |
1d7c1841 | 9536 | GP * |
a8fc9800 | 9537 | Perl_gp_dup(pTHX_ GP *gp, CLONE_PARAMS* param) |
1d7c1841 GS |
9538 | { |
9539 | GP *ret; | |
9540 | if (!gp) | |
9541 | return (GP*)NULL; | |
9542 | /* look for it in the table first */ | |
9543 | ret = (GP*)ptr_table_fetch(PL_ptr_table, gp); | |
9544 | if (ret) | |
9545 | return ret; | |
9546 | ||
9547 | /* create anew and remember what it is */ | |
9548 | Newz(0, ret, 1, GP); | |
9549 | ptr_table_store(PL_ptr_table, gp, ret); | |
9550 | ||
9551 | /* clone */ | |
9552 | ret->gp_refcnt = 0; /* must be before any other dups! */ | |
d2d73c3e AB |
9553 | ret->gp_sv = sv_dup_inc(gp->gp_sv, param); |
9554 | ret->gp_io = io_dup_inc(gp->gp_io, param); | |
9555 | ret->gp_form = cv_dup_inc(gp->gp_form, param); | |
9556 | ret->gp_av = av_dup_inc(gp->gp_av, param); | |
9557 | ret->gp_hv = hv_dup_inc(gp->gp_hv, param); | |
9558 | ret->gp_egv = gv_dup(gp->gp_egv, param);/* GvEGV is not refcounted */ | |
9559 | ret->gp_cv = cv_dup_inc(gp->gp_cv, param); | |
1d7c1841 GS |
9560 | ret->gp_cvgen = gp->gp_cvgen; |
9561 | ret->gp_flags = gp->gp_flags; | |
9562 | ret->gp_line = gp->gp_line; | |
9563 | ret->gp_file = gp->gp_file; /* points to COP.cop_file */ | |
9564 | return ret; | |
9565 | } | |
9566 | ||
645c22ef DM |
9567 | /* duplicate a chain of magic */ |
9568 | ||
1d7c1841 | 9569 | MAGIC * |
a8fc9800 | 9570 | Perl_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS* param) |
1d7c1841 | 9571 | { |
cb359b41 JH |
9572 | MAGIC *mgprev = (MAGIC*)NULL; |
9573 | MAGIC *mgret; | |
1d7c1841 GS |
9574 | if (!mg) |
9575 | return (MAGIC*)NULL; | |
9576 | /* look for it in the table first */ | |
9577 | mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg); | |
9578 | if (mgret) | |
9579 | return mgret; | |
9580 | ||
9581 | for (; mg; mg = mg->mg_moremagic) { | |
9582 | MAGIC *nmg; | |
9583 | Newz(0, nmg, 1, MAGIC); | |
cb359b41 | 9584 | if (mgprev) |
1d7c1841 | 9585 | mgprev->mg_moremagic = nmg; |
cb359b41 JH |
9586 | else |
9587 | mgret = nmg; | |
1d7c1841 GS |
9588 | nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */ |
9589 | nmg->mg_private = mg->mg_private; | |
9590 | nmg->mg_type = mg->mg_type; | |
9591 | nmg->mg_flags = mg->mg_flags; | |
14befaf4 | 9592 | if (mg->mg_type == PERL_MAGIC_qr) { |
d2f185dc | 9593 | nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj, param); |
1d7c1841 | 9594 | } |
05bd4103 JH |
9595 | else if(mg->mg_type == PERL_MAGIC_backref) { |
9596 | AV *av = (AV*) mg->mg_obj; | |
9597 | SV **svp; | |
9598 | I32 i; | |
9599 | nmg->mg_obj = (SV*)newAV(); | |
9600 | svp = AvARRAY(av); | |
9601 | i = AvFILLp(av); | |
9602 | while (i >= 0) { | |
9603 | av_push((AV*)nmg->mg_obj,sv_dup(svp[i],param)); | |
9604 | i--; | |
9605 | } | |
9606 | } | |
1d7c1841 GS |
9607 | else { |
9608 | nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED) | |
d2d73c3e AB |
9609 | ? sv_dup_inc(mg->mg_obj, param) |
9610 | : sv_dup(mg->mg_obj, param); | |
1d7c1841 GS |
9611 | } |
9612 | nmg->mg_len = mg->mg_len; | |
9613 | nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */ | |
14befaf4 | 9614 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
68795e93 | 9615 | if (mg->mg_len > 0) { |
1d7c1841 | 9616 | nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len); |
14befaf4 DM |
9617 | if (mg->mg_type == PERL_MAGIC_overload_table && |
9618 | AMT_AMAGIC((AMT*)mg->mg_ptr)) | |
9619 | { | |
1d7c1841 GS |
9620 | AMT *amtp = (AMT*)mg->mg_ptr; |
9621 | AMT *namtp = (AMT*)nmg->mg_ptr; | |
9622 | I32 i; | |
9623 | for (i = 1; i < NofAMmeth; i++) { | |
d2d73c3e | 9624 | namtp->table[i] = cv_dup_inc(amtp->table[i], param); |
1d7c1841 GS |
9625 | } |
9626 | } | |
9627 | } | |
9628 | else if (mg->mg_len == HEf_SVKEY) | |
d2d73c3e | 9629 | nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr, param); |
1d7c1841 | 9630 | } |
68795e93 NIS |
9631 | if ((mg->mg_flags & MGf_DUP) && mg->mg_virtual && mg->mg_virtual->svt_dup) { |
9632 | CALL_FPTR(nmg->mg_virtual->svt_dup)(aTHX_ nmg, param); | |
9633 | } | |
1d7c1841 GS |
9634 | mgprev = nmg; |
9635 | } | |
9636 | return mgret; | |
9637 | } | |
9638 | ||
645c22ef DM |
9639 | /* create a new pointer-mapping table */ |
9640 | ||
1d7c1841 GS |
9641 | PTR_TBL_t * |
9642 | Perl_ptr_table_new(pTHX) | |
9643 | { | |
9644 | PTR_TBL_t *tbl; | |
9645 | Newz(0, tbl, 1, PTR_TBL_t); | |
9646 | tbl->tbl_max = 511; | |
9647 | tbl->tbl_items = 0; | |
9648 | Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*); | |
9649 | return tbl; | |
9650 | } | |
9651 | ||
645c22ef DM |
9652 | /* map an existing pointer using a table */ |
9653 | ||
1d7c1841 GS |
9654 | void * |
9655 | Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv) | |
9656 | { | |
9657 | PTR_TBL_ENT_t *tblent; | |
d2a79402 | 9658 | UV hash = PTR2UV(sv); |
1d7c1841 GS |
9659 | assert(tbl); |
9660 | tblent = tbl->tbl_ary[hash & tbl->tbl_max]; | |
9661 | for (; tblent; tblent = tblent->next) { | |
9662 | if (tblent->oldval == sv) | |
9663 | return tblent->newval; | |
9664 | } | |
9665 | return (void*)NULL; | |
9666 | } | |
9667 | ||
645c22ef DM |
9668 | /* add a new entry to a pointer-mapping table */ |
9669 | ||
1d7c1841 GS |
9670 | void |
9671 | Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv) | |
9672 | { | |
9673 | PTR_TBL_ENT_t *tblent, **otblent; | |
9674 | /* XXX this may be pessimal on platforms where pointers aren't good | |
9675 | * hash values e.g. if they grow faster in the most significant | |
9676 | * bits */ | |
d2a79402 | 9677 | UV hash = PTR2UV(oldv); |
1d7c1841 GS |
9678 | bool i = 1; |
9679 | ||
9680 | assert(tbl); | |
9681 | otblent = &tbl->tbl_ary[hash & tbl->tbl_max]; | |
9682 | for (tblent = *otblent; tblent; i=0, tblent = tblent->next) { | |
9683 | if (tblent->oldval == oldv) { | |
9684 | tblent->newval = newv; | |
1d7c1841 GS |
9685 | return; |
9686 | } | |
9687 | } | |
9688 | Newz(0, tblent, 1, PTR_TBL_ENT_t); | |
9689 | tblent->oldval = oldv; | |
9690 | tblent->newval = newv; | |
9691 | tblent->next = *otblent; | |
9692 | *otblent = tblent; | |
9693 | tbl->tbl_items++; | |
9694 | if (i && tbl->tbl_items > tbl->tbl_max) | |
9695 | ptr_table_split(tbl); | |
9696 | } | |
9697 | ||
645c22ef DM |
9698 | /* double the hash bucket size of an existing ptr table */ |
9699 | ||
1d7c1841 GS |
9700 | void |
9701 | Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl) | |
9702 | { | |
9703 | PTR_TBL_ENT_t **ary = tbl->tbl_ary; | |
9704 | UV oldsize = tbl->tbl_max + 1; | |
9705 | UV newsize = oldsize * 2; | |
9706 | UV i; | |
9707 | ||
9708 | Renew(ary, newsize, PTR_TBL_ENT_t*); | |
9709 | Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*); | |
9710 | tbl->tbl_max = --newsize; | |
9711 | tbl->tbl_ary = ary; | |
9712 | for (i=0; i < oldsize; i++, ary++) { | |
9713 | PTR_TBL_ENT_t **curentp, **entp, *ent; | |
9714 | if (!*ary) | |
9715 | continue; | |
9716 | curentp = ary + oldsize; | |
9717 | for (entp = ary, ent = *ary; ent; ent = *entp) { | |
d2a79402 | 9718 | if ((newsize & PTR2UV(ent->oldval)) != i) { |
1d7c1841 GS |
9719 | *entp = ent->next; |
9720 | ent->next = *curentp; | |
9721 | *curentp = ent; | |
9722 | continue; | |
9723 | } | |
9724 | else | |
9725 | entp = &ent->next; | |
9726 | } | |
9727 | } | |
9728 | } | |
9729 | ||
645c22ef DM |
9730 | /* remove all the entries from a ptr table */ |
9731 | ||
a0739874 DM |
9732 | void |
9733 | Perl_ptr_table_clear(pTHX_ PTR_TBL_t *tbl) | |
9734 | { | |
9735 | register PTR_TBL_ENT_t **array; | |
9736 | register PTR_TBL_ENT_t *entry; | |
9737 | register PTR_TBL_ENT_t *oentry = Null(PTR_TBL_ENT_t*); | |
9738 | UV riter = 0; | |
9739 | UV max; | |
9740 | ||
9741 | if (!tbl || !tbl->tbl_items) { | |
9742 | return; | |
9743 | } | |
9744 | ||
9745 | array = tbl->tbl_ary; | |
9746 | entry = array[0]; | |
9747 | max = tbl->tbl_max; | |
9748 | ||
9749 | for (;;) { | |
9750 | if (entry) { | |
9751 | oentry = entry; | |
9752 | entry = entry->next; | |
9753 | Safefree(oentry); | |
9754 | } | |
9755 | if (!entry) { | |
9756 | if (++riter > max) { | |
9757 | break; | |
9758 | } | |
9759 | entry = array[riter]; | |
9760 | } | |
9761 | } | |
9762 | ||
9763 | tbl->tbl_items = 0; | |
9764 | } | |
9765 | ||
645c22ef DM |
9766 | /* clear and free a ptr table */ |
9767 | ||
a0739874 DM |
9768 | void |
9769 | Perl_ptr_table_free(pTHX_ PTR_TBL_t *tbl) | |
9770 | { | |
9771 | if (!tbl) { | |
9772 | return; | |
9773 | } | |
9774 | ptr_table_clear(tbl); | |
9775 | Safefree(tbl->tbl_ary); | |
9776 | Safefree(tbl); | |
9777 | } | |
9778 | ||
1d7c1841 GS |
9779 | #ifdef DEBUGGING |
9780 | char *PL_watch_pvx; | |
9781 | #endif | |
9782 | ||
645c22ef DM |
9783 | /* attempt to make everything in the typeglob readonly */ |
9784 | ||
5bd07a3d | 9785 | STATIC SV * |
59b40662 | 9786 | S_gv_share(pTHX_ SV *sstr, CLONE_PARAMS *param) |
5bd07a3d DM |
9787 | { |
9788 | GV *gv = (GV*)sstr; | |
59b40662 | 9789 | SV *sv = ¶m->proto_perl->Isv_no; /* just need SvREADONLY-ness */ |
5bd07a3d DM |
9790 | |
9791 | if (GvIO(gv) || GvFORM(gv)) { | |
7fb37951 | 9792 | GvUNIQUE_off(gv); /* GvIOs cannot be shared. nor can GvFORMs */ |
5bd07a3d DM |
9793 | } |
9794 | else if (!GvCV(gv)) { | |
9795 | GvCV(gv) = (CV*)sv; | |
9796 | } | |
9797 | else { | |
9798 | /* CvPADLISTs cannot be shared */ | |
37e20706 | 9799 | if (!SvREADONLY(GvCV(gv)) && !CvXSUB(GvCV(gv))) { |
7fb37951 | 9800 | GvUNIQUE_off(gv); |
5bd07a3d DM |
9801 | } |
9802 | } | |
9803 | ||
7fb37951 | 9804 | if (!GvUNIQUE(gv)) { |
5bd07a3d DM |
9805 | #if 0 |
9806 | PerlIO_printf(Perl_debug_log, "gv_share: unable to share %s::%s\n", | |
9807 | HvNAME(GvSTASH(gv)), GvNAME(gv)); | |
9808 | #endif | |
9809 | return Nullsv; | |
9810 | } | |
9811 | ||
4411f3b6 | 9812 | /* |
5bd07a3d DM |
9813 | * write attempts will die with |
9814 | * "Modification of a read-only value attempted" | |
9815 | */ | |
9816 | if (!GvSV(gv)) { | |
9817 | GvSV(gv) = sv; | |
9818 | } | |
9819 | else { | |
9820 | SvREADONLY_on(GvSV(gv)); | |
9821 | } | |
9822 | ||
9823 | if (!GvAV(gv)) { | |
9824 | GvAV(gv) = (AV*)sv; | |
9825 | } | |
9826 | else { | |
9827 | SvREADONLY_on(GvAV(gv)); | |
9828 | } | |
9829 | ||
9830 | if (!GvHV(gv)) { | |
9831 | GvHV(gv) = (HV*)sv; | |
9832 | } | |
9833 | else { | |
9834 | SvREADONLY_on(GvAV(gv)); | |
9835 | } | |
9836 | ||
9837 | return sstr; /* he_dup() will SvREFCNT_inc() */ | |
9838 | } | |
9839 | ||
645c22ef DM |
9840 | /* duplicate an SV of any type (including AV, HV etc) */ |
9841 | ||
83841fad NIS |
9842 | void |
9843 | Perl_rvpv_dup(pTHX_ SV *dstr, SV *sstr, CLONE_PARAMS* param) | |
9844 | { | |
9845 | if (SvROK(sstr)) { | |
d3d0e6f1 | 9846 | SvRV(dstr) = SvWEAKREF(sstr) |
83841fad NIS |
9847 | ? sv_dup(SvRV(sstr), param) |
9848 | : sv_dup_inc(SvRV(sstr), param); | |
9849 | } | |
9850 | else if (SvPVX(sstr)) { | |
9851 | /* Has something there */ | |
9852 | if (SvLEN(sstr)) { | |
68795e93 | 9853 | /* Normal PV - clone whole allocated space */ |
83841fad | 9854 | SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1); |
d3d0e6f1 NC |
9855 | if (SvREADONLY(sstr) && SvFAKE(sstr)) { |
9856 | /* Not that normal - actually sstr is copy on write. | |
9857 | But we are a true, independant SV, so: */ | |
9858 | SvREADONLY_off(dstr); | |
9859 | SvFAKE_off(dstr); | |
9860 | } | |
68795e93 | 9861 | } |
83841fad NIS |
9862 | else { |
9863 | /* Special case - not normally malloced for some reason */ | |
9864 | if (SvREADONLY(sstr) && SvFAKE(sstr)) { | |
9865 | /* A "shared" PV - clone it as unshared string */ | |
9866 | SvFAKE_off(dstr); | |
9867 | SvREADONLY_off(dstr); | |
9868 | SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvCUR(sstr)); | |
9869 | } | |
9870 | else { | |
9871 | /* Some other special case - random pointer */ | |
9872 | SvPVX(dstr) = SvPVX(sstr); | |
d3d0e6f1 | 9873 | } |
83841fad NIS |
9874 | } |
9875 | } | |
9876 | else { | |
9877 | /* Copy the Null */ | |
9878 | SvPVX(dstr) = SvPVX(sstr); | |
9879 | } | |
9880 | } | |
9881 | ||
1d7c1841 | 9882 | SV * |
a8fc9800 | 9883 | Perl_sv_dup(pTHX_ SV *sstr, CLONE_PARAMS* param) |
1d7c1841 | 9884 | { |
1d7c1841 GS |
9885 | SV *dstr; |
9886 | ||
9887 | if (!sstr || SvTYPE(sstr) == SVTYPEMASK) | |
9888 | return Nullsv; | |
9889 | /* look for it in the table first */ | |
9890 | dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr); | |
9891 | if (dstr) | |
9892 | return dstr; | |
9893 | ||
0405e91e AB |
9894 | if(param->flags & CLONEf_JOIN_IN) { |
9895 | /** We are joining here so we don't want do clone | |
9896 | something that is bad **/ | |
9897 | ||
9898 | if(SvTYPE(sstr) == SVt_PVHV && | |
9899 | HvNAME(sstr)) { | |
9900 | /** don't clone stashes if they already exist **/ | |
9901 | HV* old_stash = gv_stashpv(HvNAME(sstr),0); | |
9902 | return (SV*) old_stash; | |
9903 | } | |
9904 | } | |
9905 | ||
1d7c1841 GS |
9906 | /* create anew and remember what it is */ |
9907 | new_SV(dstr); | |
9908 | ptr_table_store(PL_ptr_table, sstr, dstr); | |
9909 | ||
9910 | /* clone */ | |
9911 | SvFLAGS(dstr) = SvFLAGS(sstr); | |
9912 | SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */ | |
9913 | SvREFCNT(dstr) = 0; /* must be before any other dups! */ | |
9914 | ||
9915 | #ifdef DEBUGGING | |
9916 | if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx) | |
9917 | PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n", | |
9918 | PL_watch_pvx, SvPVX(sstr)); | |
9919 | #endif | |
9920 | ||
9921 | switch (SvTYPE(sstr)) { | |
9922 | case SVt_NULL: | |
9923 | SvANY(dstr) = NULL; | |
9924 | break; | |
9925 | case SVt_IV: | |
9926 | SvANY(dstr) = new_XIV(); | |
9927 | SvIVX(dstr) = SvIVX(sstr); | |
9928 | break; | |
9929 | case SVt_NV: | |
9930 | SvANY(dstr) = new_XNV(); | |
9931 | SvNVX(dstr) = SvNVX(sstr); | |
9932 | break; | |
9933 | case SVt_RV: | |
9934 | SvANY(dstr) = new_XRV(); | |
83841fad | 9935 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
9936 | break; |
9937 | case SVt_PV: | |
9938 | SvANY(dstr) = new_XPV(); | |
9939 | SvCUR(dstr) = SvCUR(sstr); | |
9940 | SvLEN(dstr) = SvLEN(sstr); | |
83841fad | 9941 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
9942 | break; |
9943 | case SVt_PVIV: | |
9944 | SvANY(dstr) = new_XPVIV(); | |
9945 | SvCUR(dstr) = SvCUR(sstr); | |
9946 | SvLEN(dstr) = SvLEN(sstr); | |
9947 | SvIVX(dstr) = SvIVX(sstr); | |
83841fad | 9948 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
9949 | break; |
9950 | case SVt_PVNV: | |
9951 | SvANY(dstr) = new_XPVNV(); | |
9952 | SvCUR(dstr) = SvCUR(sstr); | |
9953 | SvLEN(dstr) = SvLEN(sstr); | |
9954 | SvIVX(dstr) = SvIVX(sstr); | |
9955 | SvNVX(dstr) = SvNVX(sstr); | |
83841fad | 9956 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
9957 | break; |
9958 | case SVt_PVMG: | |
9959 | SvANY(dstr) = new_XPVMG(); | |
9960 | SvCUR(dstr) = SvCUR(sstr); | |
9961 | SvLEN(dstr) = SvLEN(sstr); | |
9962 | SvIVX(dstr) = SvIVX(sstr); | |
9963 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
9964 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
9965 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 9966 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
9967 | break; |
9968 | case SVt_PVBM: | |
9969 | SvANY(dstr) = new_XPVBM(); | |
9970 | SvCUR(dstr) = SvCUR(sstr); | |
9971 | SvLEN(dstr) = SvLEN(sstr); | |
9972 | SvIVX(dstr) = SvIVX(sstr); | |
9973 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
9974 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
9975 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 9976 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
9977 | BmRARE(dstr) = BmRARE(sstr); |
9978 | BmUSEFUL(dstr) = BmUSEFUL(sstr); | |
9979 | BmPREVIOUS(dstr)= BmPREVIOUS(sstr); | |
9980 | break; | |
9981 | case SVt_PVLV: | |
9982 | SvANY(dstr) = new_XPVLV(); | |
9983 | SvCUR(dstr) = SvCUR(sstr); | |
9984 | SvLEN(dstr) = SvLEN(sstr); | |
9985 | SvIVX(dstr) = SvIVX(sstr); | |
9986 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
9987 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
9988 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 9989 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
9990 | LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */ |
9991 | LvTARGLEN(dstr) = LvTARGLEN(sstr); | |
d2d73c3e | 9992 | LvTARG(dstr) = sv_dup_inc(LvTARG(sstr), param); |
1d7c1841 GS |
9993 | LvTYPE(dstr) = LvTYPE(sstr); |
9994 | break; | |
9995 | case SVt_PVGV: | |
7fb37951 | 9996 | if (GvUNIQUE((GV*)sstr)) { |
5bd07a3d | 9997 | SV *share; |
59b40662 | 9998 | if ((share = gv_share(sstr, param))) { |
5bd07a3d DM |
9999 | del_SV(dstr); |
10000 | dstr = share; | |
37e20706 | 10001 | ptr_table_store(PL_ptr_table, sstr, dstr); |
5bd07a3d DM |
10002 | #if 0 |
10003 | PerlIO_printf(Perl_debug_log, "sv_dup: sharing %s::%s\n", | |
10004 | HvNAME(GvSTASH(share)), GvNAME(share)); | |
10005 | #endif | |
10006 | break; | |
10007 | } | |
10008 | } | |
1d7c1841 GS |
10009 | SvANY(dstr) = new_XPVGV(); |
10010 | SvCUR(dstr) = SvCUR(sstr); | |
10011 | SvLEN(dstr) = SvLEN(sstr); | |
10012 | SvIVX(dstr) = SvIVX(sstr); | |
10013 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10014 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10015 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10016 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10017 | GvNAMELEN(dstr) = GvNAMELEN(sstr); |
10018 | GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr)); | |
d2d73c3e | 10019 | GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr), param); |
1d7c1841 | 10020 | GvFLAGS(dstr) = GvFLAGS(sstr); |
d2d73c3e | 10021 | GvGP(dstr) = gp_dup(GvGP(sstr), param); |
1d7c1841 GS |
10022 | (void)GpREFCNT_inc(GvGP(dstr)); |
10023 | break; | |
10024 | case SVt_PVIO: | |
10025 | SvANY(dstr) = new_XPVIO(); | |
10026 | SvCUR(dstr) = SvCUR(sstr); | |
10027 | SvLEN(dstr) = SvLEN(sstr); | |
10028 | SvIVX(dstr) = SvIVX(sstr); | |
10029 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10030 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10031 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10032 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
a8fc9800 | 10033 | IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr), param); |
1d7c1841 GS |
10034 | if (IoOFP(sstr) == IoIFP(sstr)) |
10035 | IoOFP(dstr) = IoIFP(dstr); | |
10036 | else | |
a8fc9800 | 10037 | IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr), param); |
1d7c1841 GS |
10038 | /* PL_rsfp_filters entries have fake IoDIRP() */ |
10039 | if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP)) | |
10040 | IoDIRP(dstr) = dirp_dup(IoDIRP(sstr)); | |
10041 | else | |
10042 | IoDIRP(dstr) = IoDIRP(sstr); | |
10043 | IoLINES(dstr) = IoLINES(sstr); | |
10044 | IoPAGE(dstr) = IoPAGE(sstr); | |
10045 | IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr); | |
10046 | IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr); | |
10047 | IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr)); | |
d2d73c3e | 10048 | IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr), param); |
1d7c1841 | 10049 | IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr)); |
d2d73c3e | 10050 | IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr), param); |
1d7c1841 | 10051 | IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr)); |
d2d73c3e | 10052 | IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr), param); |
1d7c1841 GS |
10053 | IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr); |
10054 | IoTYPE(dstr) = IoTYPE(sstr); | |
10055 | IoFLAGS(dstr) = IoFLAGS(sstr); | |
10056 | break; | |
10057 | case SVt_PVAV: | |
10058 | SvANY(dstr) = new_XPVAV(); | |
10059 | SvCUR(dstr) = SvCUR(sstr); | |
10060 | SvLEN(dstr) = SvLEN(sstr); | |
10061 | SvIVX(dstr) = SvIVX(sstr); | |
10062 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10063 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10064 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
10065 | AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr), param); | |
1d7c1841 GS |
10066 | AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr); |
10067 | if (AvARRAY((AV*)sstr)) { | |
10068 | SV **dst_ary, **src_ary; | |
10069 | SSize_t items = AvFILLp((AV*)sstr) + 1; | |
10070 | ||
10071 | src_ary = AvARRAY((AV*)sstr); | |
10072 | Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*); | |
10073 | ptr_table_store(PL_ptr_table, src_ary, dst_ary); | |
10074 | SvPVX(dstr) = (char*)dst_ary; | |
10075 | AvALLOC((AV*)dstr) = dst_ary; | |
10076 | if (AvREAL((AV*)sstr)) { | |
10077 | while (items-- > 0) | |
d2d73c3e | 10078 | *dst_ary++ = sv_dup_inc(*src_ary++, param); |
1d7c1841 GS |
10079 | } |
10080 | else { | |
10081 | while (items-- > 0) | |
d2d73c3e | 10082 | *dst_ary++ = sv_dup(*src_ary++, param); |
1d7c1841 GS |
10083 | } |
10084 | items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr); | |
10085 | while (items-- > 0) { | |
10086 | *dst_ary++ = &PL_sv_undef; | |
10087 | } | |
10088 | } | |
10089 | else { | |
10090 | SvPVX(dstr) = Nullch; | |
10091 | AvALLOC((AV*)dstr) = (SV**)NULL; | |
10092 | } | |
10093 | break; | |
10094 | case SVt_PVHV: | |
10095 | SvANY(dstr) = new_XPVHV(); | |
10096 | SvCUR(dstr) = SvCUR(sstr); | |
10097 | SvLEN(dstr) = SvLEN(sstr); | |
10098 | SvIVX(dstr) = SvIVX(sstr); | |
10099 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10100 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10101 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
1d7c1841 GS |
10102 | HvRITER((HV*)dstr) = HvRITER((HV*)sstr); |
10103 | if (HvARRAY((HV*)sstr)) { | |
1d7c1841 GS |
10104 | STRLEN i = 0; |
10105 | XPVHV *dxhv = (XPVHV*)SvANY(dstr); | |
10106 | XPVHV *sxhv = (XPVHV*)SvANY(sstr); | |
10107 | Newz(0, dxhv->xhv_array, | |
10108 | PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char); | |
10109 | while (i <= sxhv->xhv_max) { | |
10110 | ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i], | |
eb160463 GS |
10111 | (bool)!!HvSHAREKEYS(sstr), |
10112 | param); | |
1d7c1841 GS |
10113 | ++i; |
10114 | } | |
eb160463 GS |
10115 | dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, |
10116 | (bool)!!HvSHAREKEYS(sstr), param); | |
1d7c1841 GS |
10117 | } |
10118 | else { | |
10119 | SvPVX(dstr) = Nullch; | |
10120 | HvEITER((HV*)dstr) = (HE*)NULL; | |
10121 | } | |
10122 | HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */ | |
10123 | HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr)); | |
c43294b8 | 10124 | /* Record stashes for possible cloning in Perl_clone(). */ |
6676db26 | 10125 | if(HvNAME((HV*)dstr)) |
d2d73c3e | 10126 | av_push(param->stashes, dstr); |
1d7c1841 GS |
10127 | break; |
10128 | case SVt_PVFM: | |
10129 | SvANY(dstr) = new_XPVFM(); | |
10130 | FmLINES(dstr) = FmLINES(sstr); | |
10131 | goto dup_pvcv; | |
10132 | /* NOTREACHED */ | |
10133 | case SVt_PVCV: | |
10134 | SvANY(dstr) = new_XPVCV(); | |
d2d73c3e | 10135 | dup_pvcv: |
1d7c1841 GS |
10136 | SvCUR(dstr) = SvCUR(sstr); |
10137 | SvLEN(dstr) = SvLEN(sstr); | |
10138 | SvIVX(dstr) = SvIVX(sstr); | |
10139 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10140 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10141 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10142 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
d2d73c3e | 10143 | CvSTASH(dstr) = hv_dup(CvSTASH(sstr), param); /* NOTE: not refcounted */ |
1d7c1841 GS |
10144 | CvSTART(dstr) = CvSTART(sstr); |
10145 | CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr)); | |
10146 | CvXSUB(dstr) = CvXSUB(sstr); | |
10147 | CvXSUBANY(dstr) = CvXSUBANY(sstr); | |
01485f8b DM |
10148 | if (CvCONST(sstr)) { |
10149 | CvXSUBANY(dstr).any_ptr = GvUNIQUE(CvGV(sstr)) ? | |
10150 | SvREFCNT_inc(CvXSUBANY(sstr).any_ptr) : | |
10151 | sv_dup_inc(CvXSUBANY(sstr).any_ptr, param); | |
10152 | } | |
d2d73c3e AB |
10153 | CvGV(dstr) = gv_dup(CvGV(sstr), param); |
10154 | if (param->flags & CLONEf_COPY_STACKS) { | |
10155 | CvDEPTH(dstr) = CvDEPTH(sstr); | |
10156 | } else { | |
10157 | CvDEPTH(dstr) = 0; | |
10158 | } | |
dd2155a4 | 10159 | PAD_DUP(CvPADLIST(dstr), CvPADLIST(sstr), param); |
7dafbf52 DM |
10160 | CvOUTSIDE_SEQ(dstr) = CvOUTSIDE_SEQ(sstr); |
10161 | CvOUTSIDE(dstr) = | |
10162 | CvWEAKOUTSIDE(sstr) | |
10163 | ? cv_dup( CvOUTSIDE(sstr), param) | |
10164 | : cv_dup_inc(CvOUTSIDE(sstr), param); | |
1d7c1841 | 10165 | CvFLAGS(dstr) = CvFLAGS(sstr); |
54356c7d | 10166 | CvFILE(dstr) = CvXSUB(sstr) ? CvFILE(sstr) : SAVEPV(CvFILE(sstr)); |
1d7c1841 GS |
10167 | break; |
10168 | default: | |
c803eecc | 10169 | Perl_croak(aTHX_ "Bizarre SvTYPE [%" IVdf "]", (IV)SvTYPE(sstr)); |
1d7c1841 GS |
10170 | break; |
10171 | } | |
10172 | ||
10173 | if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO) | |
10174 | ++PL_sv_objcount; | |
10175 | ||
10176 | return dstr; | |
d2d73c3e | 10177 | } |
1d7c1841 | 10178 | |
645c22ef DM |
10179 | /* duplicate a context */ |
10180 | ||
1d7c1841 | 10181 | PERL_CONTEXT * |
a8fc9800 | 10182 | Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max, CLONE_PARAMS* param) |
1d7c1841 GS |
10183 | { |
10184 | PERL_CONTEXT *ncxs; | |
10185 | ||
10186 | if (!cxs) | |
10187 | return (PERL_CONTEXT*)NULL; | |
10188 | ||
10189 | /* look for it in the table first */ | |
10190 | ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs); | |
10191 | if (ncxs) | |
10192 | return ncxs; | |
10193 | ||
10194 | /* create anew and remember what it is */ | |
10195 | Newz(56, ncxs, max + 1, PERL_CONTEXT); | |
10196 | ptr_table_store(PL_ptr_table, cxs, ncxs); | |
10197 | ||
10198 | while (ix >= 0) { | |
10199 | PERL_CONTEXT *cx = &cxs[ix]; | |
10200 | PERL_CONTEXT *ncx = &ncxs[ix]; | |
10201 | ncx->cx_type = cx->cx_type; | |
10202 | if (CxTYPE(cx) == CXt_SUBST) { | |
10203 | Perl_croak(aTHX_ "Cloning substitution context is unimplemented"); | |
10204 | } | |
10205 | else { | |
10206 | ncx->blk_oldsp = cx->blk_oldsp; | |
10207 | ncx->blk_oldcop = cx->blk_oldcop; | |
10208 | ncx->blk_oldretsp = cx->blk_oldretsp; | |
10209 | ncx->blk_oldmarksp = cx->blk_oldmarksp; | |
10210 | ncx->blk_oldscopesp = cx->blk_oldscopesp; | |
10211 | ncx->blk_oldpm = cx->blk_oldpm; | |
10212 | ncx->blk_gimme = cx->blk_gimme; | |
10213 | switch (CxTYPE(cx)) { | |
10214 | case CXt_SUB: | |
10215 | ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0 | |
d2d73c3e AB |
10216 | ? cv_dup_inc(cx->blk_sub.cv, param) |
10217 | : cv_dup(cx->blk_sub.cv,param)); | |
1d7c1841 | 10218 | ncx->blk_sub.argarray = (cx->blk_sub.hasargs |
d2d73c3e | 10219 | ? av_dup_inc(cx->blk_sub.argarray, param) |
1d7c1841 | 10220 | : Nullav); |
d2d73c3e | 10221 | ncx->blk_sub.savearray = av_dup_inc(cx->blk_sub.savearray, param); |
1d7c1841 GS |
10222 | ncx->blk_sub.olddepth = cx->blk_sub.olddepth; |
10223 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; | |
10224 | ncx->blk_sub.lval = cx->blk_sub.lval; | |
10225 | break; | |
10226 | case CXt_EVAL: | |
10227 | ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval; | |
10228 | ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type; | |
b47cad08 | 10229 | ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv, param); |
1d7c1841 | 10230 | ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root; |
d2d73c3e | 10231 | ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text, param); |
1d7c1841 GS |
10232 | break; |
10233 | case CXt_LOOP: | |
10234 | ncx->blk_loop.label = cx->blk_loop.label; | |
10235 | ncx->blk_loop.resetsp = cx->blk_loop.resetsp; | |
10236 | ncx->blk_loop.redo_op = cx->blk_loop.redo_op; | |
10237 | ncx->blk_loop.next_op = cx->blk_loop.next_op; | |
10238 | ncx->blk_loop.last_op = cx->blk_loop.last_op; | |
10239 | ncx->blk_loop.iterdata = (CxPADLOOP(cx) | |
10240 | ? cx->blk_loop.iterdata | |
d2d73c3e | 10241 | : gv_dup((GV*)cx->blk_loop.iterdata, param)); |
f3548bdc DM |
10242 | ncx->blk_loop.oldcomppad |
10243 | = (PAD*)ptr_table_fetch(PL_ptr_table, | |
10244 | cx->blk_loop.oldcomppad); | |
d2d73c3e AB |
10245 | ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave, param); |
10246 | ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval, param); | |
10247 | ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary, param); | |
1d7c1841 GS |
10248 | ncx->blk_loop.iterix = cx->blk_loop.iterix; |
10249 | ncx->blk_loop.itermax = cx->blk_loop.itermax; | |
10250 | break; | |
10251 | case CXt_FORMAT: | |
d2d73c3e AB |
10252 | ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv, param); |
10253 | ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv, param); | |
10254 | ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv, param); | |
1d7c1841 GS |
10255 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; |
10256 | break; | |
10257 | case CXt_BLOCK: | |
10258 | case CXt_NULL: | |
10259 | break; | |
10260 | } | |
10261 | } | |
10262 | --ix; | |
10263 | } | |
10264 | return ncxs; | |
10265 | } | |
10266 | ||
645c22ef DM |
10267 | /* duplicate a stack info structure */ |
10268 | ||
1d7c1841 | 10269 | PERL_SI * |
a8fc9800 | 10270 | Perl_si_dup(pTHX_ PERL_SI *si, CLONE_PARAMS* param) |
1d7c1841 GS |
10271 | { |
10272 | PERL_SI *nsi; | |
10273 | ||
10274 | if (!si) | |
10275 | return (PERL_SI*)NULL; | |
10276 | ||
10277 | /* look for it in the table first */ | |
10278 | nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si); | |
10279 | if (nsi) | |
10280 | return nsi; | |
10281 | ||
10282 | /* create anew and remember what it is */ | |
10283 | Newz(56, nsi, 1, PERL_SI); | |
10284 | ptr_table_store(PL_ptr_table, si, nsi); | |
10285 | ||
d2d73c3e | 10286 | nsi->si_stack = av_dup_inc(si->si_stack, param); |
1d7c1841 GS |
10287 | nsi->si_cxix = si->si_cxix; |
10288 | nsi->si_cxmax = si->si_cxmax; | |
d2d73c3e | 10289 | nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax, param); |
1d7c1841 | 10290 | nsi->si_type = si->si_type; |
d2d73c3e AB |
10291 | nsi->si_prev = si_dup(si->si_prev, param); |
10292 | nsi->si_next = si_dup(si->si_next, param); | |
1d7c1841 GS |
10293 | nsi->si_markoff = si->si_markoff; |
10294 | ||
10295 | return nsi; | |
10296 | } | |
10297 | ||
10298 | #define POPINT(ss,ix) ((ss)[--(ix)].any_i32) | |
10299 | #define TOPINT(ss,ix) ((ss)[ix].any_i32) | |
10300 | #define POPLONG(ss,ix) ((ss)[--(ix)].any_long) | |
10301 | #define TOPLONG(ss,ix) ((ss)[ix].any_long) | |
10302 | #define POPIV(ss,ix) ((ss)[--(ix)].any_iv) | |
10303 | #define TOPIV(ss,ix) ((ss)[ix].any_iv) | |
38d8b13e HS |
10304 | #define POPBOOL(ss,ix) ((ss)[--(ix)].any_bool) |
10305 | #define TOPBOOL(ss,ix) ((ss)[ix].any_bool) | |
1d7c1841 GS |
10306 | #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr) |
10307 | #define TOPPTR(ss,ix) ((ss)[ix].any_ptr) | |
10308 | #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr) | |
10309 | #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr) | |
10310 | #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr) | |
10311 | #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr) | |
10312 | ||
10313 | /* XXXXX todo */ | |
10314 | #define pv_dup_inc(p) SAVEPV(p) | |
10315 | #define pv_dup(p) SAVEPV(p) | |
10316 | #define svp_dup_inc(p,pp) any_dup(p,pp) | |
10317 | ||
645c22ef DM |
10318 | /* map any object to the new equivent - either something in the |
10319 | * ptr table, or something in the interpreter structure | |
10320 | */ | |
10321 | ||
1d7c1841 GS |
10322 | void * |
10323 | Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl) | |
10324 | { | |
10325 | void *ret; | |
10326 | ||
10327 | if (!v) | |
10328 | return (void*)NULL; | |
10329 | ||
10330 | /* look for it in the table first */ | |
10331 | ret = ptr_table_fetch(PL_ptr_table, v); | |
10332 | if (ret) | |
10333 | return ret; | |
10334 | ||
10335 | /* see if it is part of the interpreter structure */ | |
10336 | if (v >= (void*)proto_perl && v < (void*)(proto_perl+1)) | |
acfe0abc | 10337 | ret = (void*)(((char*)aTHX) + (((char*)v) - (char*)proto_perl)); |
05ec9bb3 | 10338 | else { |
1d7c1841 | 10339 | ret = v; |
05ec9bb3 | 10340 | } |
1d7c1841 GS |
10341 | |
10342 | return ret; | |
10343 | } | |
10344 | ||
645c22ef DM |
10345 | /* duplicate the save stack */ |
10346 | ||
1d7c1841 | 10347 | ANY * |
a8fc9800 | 10348 | Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl, CLONE_PARAMS* param) |
1d7c1841 GS |
10349 | { |
10350 | ANY *ss = proto_perl->Tsavestack; | |
10351 | I32 ix = proto_perl->Tsavestack_ix; | |
10352 | I32 max = proto_perl->Tsavestack_max; | |
10353 | ANY *nss; | |
10354 | SV *sv; | |
10355 | GV *gv; | |
10356 | AV *av; | |
10357 | HV *hv; | |
10358 | void* ptr; | |
10359 | int intval; | |
10360 | long longval; | |
10361 | GP *gp; | |
10362 | IV iv; | |
10363 | I32 i; | |
c4e33207 | 10364 | char *c = NULL; |
1d7c1841 | 10365 | void (*dptr) (void*); |
acfe0abc | 10366 | void (*dxptr) (pTHX_ void*); |
e977893f | 10367 | OP *o; |
1d7c1841 GS |
10368 | |
10369 | Newz(54, nss, max, ANY); | |
10370 | ||
10371 | while (ix > 0) { | |
10372 | i = POPINT(ss,ix); | |
10373 | TOPINT(nss,ix) = i; | |
10374 | switch (i) { | |
10375 | case SAVEt_ITEM: /* normal string */ | |
10376 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10377 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 10378 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 10379 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
10380 | break; |
10381 | case SAVEt_SV: /* scalar reference */ | |
10382 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10383 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 10384 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 10385 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 | 10386 | break; |
f4dd75d9 GS |
10387 | case SAVEt_GENERIC_PVREF: /* generic char* */ |
10388 | c = (char*)POPPTR(ss,ix); | |
10389 | TOPPTR(nss,ix) = pv_dup(c); | |
10390 | ptr = POPPTR(ss,ix); | |
10391 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10392 | break; | |
05ec9bb3 NIS |
10393 | case SAVEt_SHARED_PVREF: /* char* in shared space */ |
10394 | c = (char*)POPPTR(ss,ix); | |
10395 | TOPPTR(nss,ix) = savesharedpv(c); | |
10396 | ptr = POPPTR(ss,ix); | |
10397 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10398 | break; | |
1d7c1841 GS |
10399 | case SAVEt_GENERIC_SVREF: /* generic sv */ |
10400 | case SAVEt_SVREF: /* scalar reference */ | |
10401 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10402 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
10403 | ptr = POPPTR(ss,ix); |
10404 | TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */ | |
10405 | break; | |
10406 | case SAVEt_AV: /* array reference */ | |
10407 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 10408 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 | 10409 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 10410 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
10411 | break; |
10412 | case SAVEt_HV: /* hash reference */ | |
10413 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 10414 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 | 10415 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 10416 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
10417 | break; |
10418 | case SAVEt_INT: /* int reference */ | |
10419 | ptr = POPPTR(ss,ix); | |
10420 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10421 | intval = (int)POPINT(ss,ix); | |
10422 | TOPINT(nss,ix) = intval; | |
10423 | break; | |
10424 | case SAVEt_LONG: /* long reference */ | |
10425 | ptr = POPPTR(ss,ix); | |
10426 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10427 | longval = (long)POPLONG(ss,ix); | |
10428 | TOPLONG(nss,ix) = longval; | |
10429 | break; | |
10430 | case SAVEt_I32: /* I32 reference */ | |
10431 | case SAVEt_I16: /* I16 reference */ | |
10432 | case SAVEt_I8: /* I8 reference */ | |
10433 | ptr = POPPTR(ss,ix); | |
10434 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10435 | i = POPINT(ss,ix); | |
10436 | TOPINT(nss,ix) = i; | |
10437 | break; | |
10438 | case SAVEt_IV: /* IV reference */ | |
10439 | ptr = POPPTR(ss,ix); | |
10440 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10441 | iv = POPIV(ss,ix); | |
10442 | TOPIV(nss,ix) = iv; | |
10443 | break; | |
10444 | case SAVEt_SPTR: /* SV* reference */ | |
10445 | ptr = POPPTR(ss,ix); | |
10446 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10447 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10448 | TOPPTR(nss,ix) = sv_dup(sv, param); |
1d7c1841 GS |
10449 | break; |
10450 | case SAVEt_VPTR: /* random* reference */ | |
10451 | ptr = POPPTR(ss,ix); | |
10452 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10453 | ptr = POPPTR(ss,ix); | |
10454 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10455 | break; | |
10456 | case SAVEt_PPTR: /* char* reference */ | |
10457 | ptr = POPPTR(ss,ix); | |
10458 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10459 | c = (char*)POPPTR(ss,ix); | |
10460 | TOPPTR(nss,ix) = pv_dup(c); | |
10461 | break; | |
10462 | case SAVEt_HPTR: /* HV* reference */ | |
10463 | ptr = POPPTR(ss,ix); | |
10464 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10465 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 10466 | TOPPTR(nss,ix) = hv_dup(hv, param); |
1d7c1841 GS |
10467 | break; |
10468 | case SAVEt_APTR: /* AV* reference */ | |
10469 | ptr = POPPTR(ss,ix); | |
10470 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10471 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 10472 | TOPPTR(nss,ix) = av_dup(av, param); |
1d7c1841 GS |
10473 | break; |
10474 | case SAVEt_NSTAB: | |
10475 | gv = (GV*)POPPTR(ss,ix); | |
d2d73c3e | 10476 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
10477 | break; |
10478 | case SAVEt_GP: /* scalar reference */ | |
10479 | gp = (GP*)POPPTR(ss,ix); | |
d2d73c3e | 10480 | TOPPTR(nss,ix) = gp = gp_dup(gp, param); |
1d7c1841 GS |
10481 | (void)GpREFCNT_inc(gp); |
10482 | gv = (GV*)POPPTR(ss,ix); | |
2ed3c8fc | 10483 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 GS |
10484 | c = (char*)POPPTR(ss,ix); |
10485 | TOPPTR(nss,ix) = pv_dup(c); | |
10486 | iv = POPIV(ss,ix); | |
10487 | TOPIV(nss,ix) = iv; | |
10488 | iv = POPIV(ss,ix); | |
10489 | TOPIV(nss,ix) = iv; | |
10490 | break; | |
10491 | case SAVEt_FREESV: | |
26d9b02f | 10492 | case SAVEt_MORTALIZESV: |
1d7c1841 | 10493 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 10494 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
10495 | break; |
10496 | case SAVEt_FREEOP: | |
10497 | ptr = POPPTR(ss,ix); | |
10498 | if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) { | |
10499 | /* these are assumed to be refcounted properly */ | |
10500 | switch (((OP*)ptr)->op_type) { | |
10501 | case OP_LEAVESUB: | |
10502 | case OP_LEAVESUBLV: | |
10503 | case OP_LEAVEEVAL: | |
10504 | case OP_LEAVE: | |
10505 | case OP_SCOPE: | |
10506 | case OP_LEAVEWRITE: | |
e977893f GS |
10507 | TOPPTR(nss,ix) = ptr; |
10508 | o = (OP*)ptr; | |
10509 | OpREFCNT_inc(o); | |
1d7c1841 GS |
10510 | break; |
10511 | default: | |
10512 | TOPPTR(nss,ix) = Nullop; | |
10513 | break; | |
10514 | } | |
10515 | } | |
10516 | else | |
10517 | TOPPTR(nss,ix) = Nullop; | |
10518 | break; | |
10519 | case SAVEt_FREEPV: | |
10520 | c = (char*)POPPTR(ss,ix); | |
10521 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
10522 | break; | |
10523 | case SAVEt_CLEARSV: | |
10524 | longval = POPLONG(ss,ix); | |
10525 | TOPLONG(nss,ix) = longval; | |
10526 | break; | |
10527 | case SAVEt_DELETE: | |
10528 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 10529 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
10530 | c = (char*)POPPTR(ss,ix); |
10531 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
10532 | i = POPINT(ss,ix); | |
10533 | TOPINT(nss,ix) = i; | |
10534 | break; | |
10535 | case SAVEt_DESTRUCTOR: | |
10536 | ptr = POPPTR(ss,ix); | |
10537 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
10538 | dptr = POPDPTR(ss,ix); | |
ef75a179 | 10539 | TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl); |
1d7c1841 GS |
10540 | break; |
10541 | case SAVEt_DESTRUCTOR_X: | |
10542 | ptr = POPPTR(ss,ix); | |
10543 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
10544 | dxptr = POPDXPTR(ss,ix); | |
acfe0abc | 10545 | TOPDXPTR(nss,ix) = (void (*)(pTHX_ void*))any_dup((void *)dxptr, proto_perl); |
1d7c1841 GS |
10546 | break; |
10547 | case SAVEt_REGCONTEXT: | |
10548 | case SAVEt_ALLOC: | |
10549 | i = POPINT(ss,ix); | |
10550 | TOPINT(nss,ix) = i; | |
10551 | ix -= i; | |
10552 | break; | |
10553 | case SAVEt_STACK_POS: /* Position on Perl stack */ | |
10554 | i = POPINT(ss,ix); | |
10555 | TOPINT(nss,ix) = i; | |
10556 | break; | |
10557 | case SAVEt_AELEM: /* array element */ | |
10558 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10559 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
10560 | i = POPINT(ss,ix); |
10561 | TOPINT(nss,ix) = i; | |
10562 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 10563 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 GS |
10564 | break; |
10565 | case SAVEt_HELEM: /* hash element */ | |
10566 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10567 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 10568 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 10569 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 10570 | hv = (HV*)POPPTR(ss,ix); |
d2d73c3e | 10571 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
10572 | break; |
10573 | case SAVEt_OP: | |
10574 | ptr = POPPTR(ss,ix); | |
10575 | TOPPTR(nss,ix) = ptr; | |
10576 | break; | |
10577 | case SAVEt_HINTS: | |
10578 | i = POPINT(ss,ix); | |
10579 | TOPINT(nss,ix) = i; | |
10580 | break; | |
c4410b1b GS |
10581 | case SAVEt_COMPPAD: |
10582 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 10583 | TOPPTR(nss,ix) = av_dup(av, param); |
c4410b1b | 10584 | break; |
c3564e5c GS |
10585 | case SAVEt_PADSV: |
10586 | longval = (long)POPLONG(ss,ix); | |
10587 | TOPLONG(nss,ix) = longval; | |
10588 | ptr = POPPTR(ss,ix); | |
10589 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10590 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10591 | TOPPTR(nss,ix) = sv_dup(sv, param); |
c3564e5c | 10592 | break; |
a1bb4754 | 10593 | case SAVEt_BOOL: |
38d8b13e | 10594 | ptr = POPPTR(ss,ix); |
b9609c01 | 10595 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); |
38d8b13e | 10596 | longval = (long)POPBOOL(ss,ix); |
b9609c01 | 10597 | TOPBOOL(nss,ix) = (bool)longval; |
a1bb4754 | 10598 | break; |
1d7c1841 GS |
10599 | default: |
10600 | Perl_croak(aTHX_ "panic: ss_dup inconsistency"); | |
10601 | } | |
10602 | } | |
10603 | ||
10604 | return nss; | |
10605 | } | |
10606 | ||
645c22ef DM |
10607 | /* |
10608 | =for apidoc perl_clone | |
10609 | ||
10610 | Create and return a new interpreter by cloning the current one. | |
10611 | ||
6a78b4db AB |
10612 | perl_clone takes these flags as paramters: |
10613 | ||
10614 | CLONEf_COPY_STACKS - is used to, well, copy the stacks also, | |
10615 | without it we only clone the data and zero the stacks, | |
10616 | with it we copy the stacks and the new perl interpreter is | |
10617 | ready to run at the exact same point as the previous one. | |
10618 | The pseudo-fork code uses COPY_STACKS while the | |
10619 | threads->new doesn't. | |
10620 | ||
10621 | CLONEf_KEEP_PTR_TABLE | |
10622 | perl_clone keeps a ptr_table with the pointer of the old | |
10623 | variable as a key and the new variable as a value, | |
10624 | this allows it to check if something has been cloned and not | |
10625 | clone it again but rather just use the value and increase the | |
10626 | refcount. If KEEP_PTR_TABLE is not set then perl_clone will kill | |
10627 | the ptr_table using the function | |
10628 | C<ptr_table_free(PL_ptr_table); PL_ptr_table = NULL;>, | |
10629 | reason to keep it around is if you want to dup some of your own | |
10630 | variable who are outside the graph perl scans, example of this | |
10631 | code is in threads.xs create | |
10632 | ||
10633 | CLONEf_CLONE_HOST | |
10634 | This is a win32 thing, it is ignored on unix, it tells perls | |
10635 | win32host code (which is c++) to clone itself, this is needed on | |
10636 | win32 if you want to run two threads at the same time, | |
10637 | if you just want to do some stuff in a separate perl interpreter | |
10638 | and then throw it away and return to the original one, | |
10639 | you don't need to do anything. | |
10640 | ||
645c22ef DM |
10641 | =cut |
10642 | */ | |
10643 | ||
10644 | /* XXX the above needs expanding by someone who actually understands it ! */ | |
3fc56081 NK |
10645 | EXTERN_C PerlInterpreter * |
10646 | perl_clone_host(PerlInterpreter* proto_perl, UV flags); | |
645c22ef | 10647 | |
1d7c1841 GS |
10648 | PerlInterpreter * |
10649 | perl_clone(PerlInterpreter *proto_perl, UV flags) | |
10650 | { | |
1d7c1841 | 10651 | #ifdef PERL_IMPLICIT_SYS |
c43294b8 AB |
10652 | |
10653 | /* perlhost.h so we need to call into it | |
10654 | to clone the host, CPerlHost should have a c interface, sky */ | |
10655 | ||
10656 | if (flags & CLONEf_CLONE_HOST) { | |
10657 | return perl_clone_host(proto_perl,flags); | |
10658 | } | |
10659 | return perl_clone_using(proto_perl, flags, | |
1d7c1841 GS |
10660 | proto_perl->IMem, |
10661 | proto_perl->IMemShared, | |
10662 | proto_perl->IMemParse, | |
10663 | proto_perl->IEnv, | |
10664 | proto_perl->IStdIO, | |
10665 | proto_perl->ILIO, | |
10666 | proto_perl->IDir, | |
10667 | proto_perl->ISock, | |
10668 | proto_perl->IProc); | |
10669 | } | |
10670 | ||
10671 | PerlInterpreter * | |
10672 | perl_clone_using(PerlInterpreter *proto_perl, UV flags, | |
10673 | struct IPerlMem* ipM, struct IPerlMem* ipMS, | |
10674 | struct IPerlMem* ipMP, struct IPerlEnv* ipE, | |
10675 | struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO, | |
10676 | struct IPerlDir* ipD, struct IPerlSock* ipS, | |
10677 | struct IPerlProc* ipP) | |
10678 | { | |
10679 | /* XXX many of the string copies here can be optimized if they're | |
10680 | * constants; they need to be allocated as common memory and just | |
10681 | * their pointers copied. */ | |
10682 | ||
10683 | IV i; | |
64aa0685 GS |
10684 | CLONE_PARAMS clone_params; |
10685 | CLONE_PARAMS* param = &clone_params; | |
d2d73c3e | 10686 | |
1d7c1841 | 10687 | PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter)); |
ba869deb | 10688 | PERL_SET_THX(my_perl); |
1d7c1841 | 10689 | |
acfe0abc | 10690 | # ifdef DEBUGGING |
a4530404 | 10691 | Poison(my_perl, 1, PerlInterpreter); |
1d7c1841 GS |
10692 | PL_markstack = 0; |
10693 | PL_scopestack = 0; | |
10694 | PL_savestack = 0; | |
10695 | PL_retstack = 0; | |
66fe0623 | 10696 | PL_sig_pending = 0; |
25596c82 | 10697 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); |
acfe0abc | 10698 | # else /* !DEBUGGING */ |
1d7c1841 | 10699 | Zero(my_perl, 1, PerlInterpreter); |
acfe0abc | 10700 | # endif /* DEBUGGING */ |
1d7c1841 GS |
10701 | |
10702 | /* host pointers */ | |
10703 | PL_Mem = ipM; | |
10704 | PL_MemShared = ipMS; | |
10705 | PL_MemParse = ipMP; | |
10706 | PL_Env = ipE; | |
10707 | PL_StdIO = ipStd; | |
10708 | PL_LIO = ipLIO; | |
10709 | PL_Dir = ipD; | |
10710 | PL_Sock = ipS; | |
10711 | PL_Proc = ipP; | |
1d7c1841 GS |
10712 | #else /* !PERL_IMPLICIT_SYS */ |
10713 | IV i; | |
64aa0685 GS |
10714 | CLONE_PARAMS clone_params; |
10715 | CLONE_PARAMS* param = &clone_params; | |
1d7c1841 | 10716 | PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter)); |
ba869deb | 10717 | PERL_SET_THX(my_perl); |
1d7c1841 | 10718 | |
d2d73c3e AB |
10719 | |
10720 | ||
1d7c1841 | 10721 | # ifdef DEBUGGING |
a4530404 | 10722 | Poison(my_perl, 1, PerlInterpreter); |
1d7c1841 GS |
10723 | PL_markstack = 0; |
10724 | PL_scopestack = 0; | |
10725 | PL_savestack = 0; | |
10726 | PL_retstack = 0; | |
66fe0623 | 10727 | PL_sig_pending = 0; |
25596c82 | 10728 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); |
1d7c1841 GS |
10729 | # else /* !DEBUGGING */ |
10730 | Zero(my_perl, 1, PerlInterpreter); | |
10731 | # endif /* DEBUGGING */ | |
10732 | #endif /* PERL_IMPLICIT_SYS */ | |
83236556 | 10733 | param->flags = flags; |
59b40662 | 10734 | param->proto_perl = proto_perl; |
1d7c1841 GS |
10735 | |
10736 | /* arena roots */ | |
10737 | PL_xiv_arenaroot = NULL; | |
10738 | PL_xiv_root = NULL; | |
612f20c3 | 10739 | PL_xnv_arenaroot = NULL; |
1d7c1841 | 10740 | PL_xnv_root = NULL; |
612f20c3 | 10741 | PL_xrv_arenaroot = NULL; |
1d7c1841 | 10742 | PL_xrv_root = NULL; |
612f20c3 | 10743 | PL_xpv_arenaroot = NULL; |
1d7c1841 | 10744 | PL_xpv_root = NULL; |
612f20c3 | 10745 | PL_xpviv_arenaroot = NULL; |
1d7c1841 | 10746 | PL_xpviv_root = NULL; |
612f20c3 | 10747 | PL_xpvnv_arenaroot = NULL; |
1d7c1841 | 10748 | PL_xpvnv_root = NULL; |
612f20c3 | 10749 | PL_xpvcv_arenaroot = NULL; |
1d7c1841 | 10750 | PL_xpvcv_root = NULL; |
612f20c3 | 10751 | PL_xpvav_arenaroot = NULL; |
1d7c1841 | 10752 | PL_xpvav_root = NULL; |
612f20c3 | 10753 | PL_xpvhv_arenaroot = NULL; |
1d7c1841 | 10754 | PL_xpvhv_root = NULL; |
612f20c3 | 10755 | PL_xpvmg_arenaroot = NULL; |
1d7c1841 | 10756 | PL_xpvmg_root = NULL; |
612f20c3 | 10757 | PL_xpvlv_arenaroot = NULL; |
1d7c1841 | 10758 | PL_xpvlv_root = NULL; |
612f20c3 | 10759 | PL_xpvbm_arenaroot = NULL; |
1d7c1841 | 10760 | PL_xpvbm_root = NULL; |
612f20c3 | 10761 | PL_he_arenaroot = NULL; |
1d7c1841 GS |
10762 | PL_he_root = NULL; |
10763 | PL_nice_chunk = NULL; | |
10764 | PL_nice_chunk_size = 0; | |
10765 | PL_sv_count = 0; | |
10766 | PL_sv_objcount = 0; | |
10767 | PL_sv_root = Nullsv; | |
10768 | PL_sv_arenaroot = Nullsv; | |
10769 | ||
10770 | PL_debug = proto_perl->Idebug; | |
10771 | ||
e5dd39fc | 10772 | #ifdef USE_REENTRANT_API |
59bd0823 | 10773 | Perl_reentrant_init(aTHX); |
e5dd39fc AB |
10774 | #endif |
10775 | ||
1d7c1841 GS |
10776 | /* create SV map for pointer relocation */ |
10777 | PL_ptr_table = ptr_table_new(); | |
10778 | ||
10779 | /* initialize these special pointers as early as possible */ | |
10780 | SvANY(&PL_sv_undef) = NULL; | |
10781 | SvREFCNT(&PL_sv_undef) = (~(U32)0)/2; | |
10782 | SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL; | |
10783 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef); | |
10784 | ||
1d7c1841 | 10785 | SvANY(&PL_sv_no) = new_XPVNV(); |
1d7c1841 GS |
10786 | SvREFCNT(&PL_sv_no) = (~(U32)0)/2; |
10787 | SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
10788 | SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0); | |
10789 | SvCUR(&PL_sv_no) = 0; | |
10790 | SvLEN(&PL_sv_no) = 1; | |
10791 | SvNVX(&PL_sv_no) = 0; | |
10792 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no); | |
10793 | ||
1d7c1841 | 10794 | SvANY(&PL_sv_yes) = new_XPVNV(); |
1d7c1841 GS |
10795 | SvREFCNT(&PL_sv_yes) = (~(U32)0)/2; |
10796 | SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
10797 | SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1); | |
10798 | SvCUR(&PL_sv_yes) = 1; | |
10799 | SvLEN(&PL_sv_yes) = 2; | |
10800 | SvNVX(&PL_sv_yes) = 1; | |
10801 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes); | |
10802 | ||
05ec9bb3 | 10803 | /* create (a non-shared!) shared string table */ |
1d7c1841 GS |
10804 | PL_strtab = newHV(); |
10805 | HvSHAREKEYS_off(PL_strtab); | |
10806 | hv_ksplit(PL_strtab, 512); | |
10807 | ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab); | |
10808 | ||
05ec9bb3 NIS |
10809 | PL_compiling = proto_perl->Icompiling; |
10810 | ||
10811 | /* These two PVs will be free'd special way so must set them same way op.c does */ | |
10812 | PL_compiling.cop_stashpv = savesharedpv(PL_compiling.cop_stashpv); | |
10813 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_stashpv, PL_compiling.cop_stashpv); | |
10814 | ||
10815 | PL_compiling.cop_file = savesharedpv(PL_compiling.cop_file); | |
10816 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_file, PL_compiling.cop_file); | |
10817 | ||
1d7c1841 GS |
10818 | ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling); |
10819 | if (!specialWARN(PL_compiling.cop_warnings)) | |
d2d73c3e | 10820 | PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings, param); |
ac27b0f5 | 10821 | if (!specialCopIO(PL_compiling.cop_io)) |
d2d73c3e | 10822 | PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io, param); |
1d7c1841 GS |
10823 | PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl); |
10824 | ||
10825 | /* pseudo environmental stuff */ | |
10826 | PL_origargc = proto_perl->Iorigargc; | |
e2975953 | 10827 | PL_origargv = proto_perl->Iorigargv; |
d2d73c3e | 10828 | |
d2d73c3e AB |
10829 | param->stashes = newAV(); /* Setup array of objects to call clone on */ |
10830 | ||
a1ea730d | 10831 | #ifdef PERLIO_LAYERS |
3a1ee7e8 NIS |
10832 | /* Clone PerlIO tables as soon as we can handle general xx_dup() */ |
10833 | PerlIO_clone(aTHX_ proto_perl, param); | |
a1ea730d | 10834 | #endif |
d2d73c3e AB |
10835 | |
10836 | PL_envgv = gv_dup(proto_perl->Ienvgv, param); | |
10837 | PL_incgv = gv_dup(proto_perl->Iincgv, param); | |
10838 | PL_hintgv = gv_dup(proto_perl->Ihintgv, param); | |
1d7c1841 | 10839 | PL_origfilename = SAVEPV(proto_perl->Iorigfilename); |
d2d73c3e AB |
10840 | PL_diehook = sv_dup_inc(proto_perl->Idiehook, param); |
10841 | PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook, param); | |
1d7c1841 GS |
10842 | |
10843 | /* switches */ | |
10844 | PL_minus_c = proto_perl->Iminus_c; | |
d2d73c3e | 10845 | PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel, param); |
1d7c1841 GS |
10846 | PL_localpatches = proto_perl->Ilocalpatches; |
10847 | PL_splitstr = proto_perl->Isplitstr; | |
10848 | PL_preprocess = proto_perl->Ipreprocess; | |
10849 | PL_minus_n = proto_perl->Iminus_n; | |
10850 | PL_minus_p = proto_perl->Iminus_p; | |
10851 | PL_minus_l = proto_perl->Iminus_l; | |
10852 | PL_minus_a = proto_perl->Iminus_a; | |
10853 | PL_minus_F = proto_perl->Iminus_F; | |
10854 | PL_doswitches = proto_perl->Idoswitches; | |
10855 | PL_dowarn = proto_perl->Idowarn; | |
10856 | PL_doextract = proto_perl->Idoextract; | |
10857 | PL_sawampersand = proto_perl->Isawampersand; | |
10858 | PL_unsafe = proto_perl->Iunsafe; | |
10859 | PL_inplace = SAVEPV(proto_perl->Iinplace); | |
d2d73c3e | 10860 | PL_e_script = sv_dup_inc(proto_perl->Ie_script, param); |
1d7c1841 GS |
10861 | PL_perldb = proto_perl->Iperldb; |
10862 | PL_perl_destruct_level = proto_perl->Iperl_destruct_level; | |
1cbb0781 | 10863 | PL_exit_flags = proto_perl->Iexit_flags; |
1d7c1841 GS |
10864 | |
10865 | /* magical thingies */ | |
10866 | /* XXX time(&PL_basetime) when asked for? */ | |
10867 | PL_basetime = proto_perl->Ibasetime; | |
d2d73c3e | 10868 | PL_formfeed = sv_dup(proto_perl->Iformfeed, param); |
1d7c1841 GS |
10869 | |
10870 | PL_maxsysfd = proto_perl->Imaxsysfd; | |
10871 | PL_multiline = proto_perl->Imultiline; | |
10872 | PL_statusvalue = proto_perl->Istatusvalue; | |
10873 | #ifdef VMS | |
10874 | PL_statusvalue_vms = proto_perl->Istatusvalue_vms; | |
10875 | #endif | |
0a378802 | 10876 | PL_encoding = sv_dup(proto_perl->Iencoding, param); |
1d7c1841 | 10877 | |
4a4c6fe3 | 10878 | sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */ |
1f483ca1 JH |
10879 | sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */ |
10880 | sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */ | |
4a4c6fe3 | 10881 | |
d2f185dc AMS |
10882 | /* Clone the regex array */ |
10883 | PL_regex_padav = newAV(); | |
10884 | { | |
10885 | I32 len = av_len((AV*)proto_perl->Iregex_padav); | |
10886 | SV** regexen = AvARRAY((AV*)proto_perl->Iregex_padav); | |
0f95fc41 AB |
10887 | av_push(PL_regex_padav, |
10888 | sv_dup_inc(regexen[0],param)); | |
10889 | for(i = 1; i <= len; i++) { | |
10890 | if(SvREPADTMP(regexen[i])) { | |
10891 | av_push(PL_regex_padav, sv_dup_inc(regexen[i], param)); | |
8cf8f3d1 | 10892 | } else { |
0f95fc41 AB |
10893 | av_push(PL_regex_padav, |
10894 | SvREFCNT_inc( | |
8cf8f3d1 | 10895 | newSViv(PTR2IV(re_dup(INT2PTR(REGEXP *, |
cbfa9890 | 10896 | SvIVX(regexen[i])), param))) |
0f95fc41 AB |
10897 | )); |
10898 | } | |
d2f185dc AMS |
10899 | } |
10900 | } | |
10901 | PL_regex_pad = AvARRAY(PL_regex_padav); | |
1fcf4c12 | 10902 | |
1d7c1841 | 10903 | /* shortcuts to various I/O objects */ |
d2d73c3e AB |
10904 | PL_stdingv = gv_dup(proto_perl->Istdingv, param); |
10905 | PL_stderrgv = gv_dup(proto_perl->Istderrgv, param); | |
10906 | PL_defgv = gv_dup(proto_perl->Idefgv, param); | |
10907 | PL_argvgv = gv_dup(proto_perl->Iargvgv, param); | |
10908 | PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv, param); | |
10909 | PL_argvout_stack = av_dup_inc(proto_perl->Iargvout_stack, param); | |
1d7c1841 GS |
10910 | |
10911 | /* shortcuts to regexp stuff */ | |
d2d73c3e | 10912 | PL_replgv = gv_dup(proto_perl->Ireplgv, param); |
1d7c1841 GS |
10913 | |
10914 | /* shortcuts to misc objects */ | |
d2d73c3e | 10915 | PL_errgv = gv_dup(proto_perl->Ierrgv, param); |
1d7c1841 GS |
10916 | |
10917 | /* shortcuts to debugging objects */ | |
d2d73c3e AB |
10918 | PL_DBgv = gv_dup(proto_perl->IDBgv, param); |
10919 | PL_DBline = gv_dup(proto_perl->IDBline, param); | |
10920 | PL_DBsub = gv_dup(proto_perl->IDBsub, param); | |
10921 | PL_DBsingle = sv_dup(proto_perl->IDBsingle, param); | |
10922 | PL_DBtrace = sv_dup(proto_perl->IDBtrace, param); | |
10923 | PL_DBsignal = sv_dup(proto_perl->IDBsignal, param); | |
06492da6 | 10924 | PL_DBassertion = sv_dup(proto_perl->IDBassertion, param); |
d2d73c3e AB |
10925 | PL_lineary = av_dup(proto_perl->Ilineary, param); |
10926 | PL_dbargs = av_dup(proto_perl->Idbargs, param); | |
1d7c1841 GS |
10927 | |
10928 | /* symbol tables */ | |
d2d73c3e AB |
10929 | PL_defstash = hv_dup_inc(proto_perl->Tdefstash, param); |
10930 | PL_curstash = hv_dup(proto_perl->Tcurstash, param); | |
d2d73c3e AB |
10931 | PL_debstash = hv_dup(proto_perl->Idebstash, param); |
10932 | PL_globalstash = hv_dup(proto_perl->Iglobalstash, param); | |
10933 | PL_curstname = sv_dup_inc(proto_perl->Icurstname, param); | |
10934 | ||
10935 | PL_beginav = av_dup_inc(proto_perl->Ibeginav, param); | |
ee1c5a4e | 10936 | PL_beginav_save = av_dup_inc(proto_perl->Ibeginav_save, param); |
ece599bd | 10937 | PL_checkav_save = av_dup_inc(proto_perl->Icheckav_save, param); |
d2d73c3e AB |
10938 | PL_endav = av_dup_inc(proto_perl->Iendav, param); |
10939 | PL_checkav = av_dup_inc(proto_perl->Icheckav, param); | |
10940 | PL_initav = av_dup_inc(proto_perl->Iinitav, param); | |
1d7c1841 GS |
10941 | |
10942 | PL_sub_generation = proto_perl->Isub_generation; | |
10943 | ||
10944 | /* funky return mechanisms */ | |
10945 | PL_forkprocess = proto_perl->Iforkprocess; | |
10946 | ||
10947 | /* subprocess state */ | |
d2d73c3e | 10948 | PL_fdpid = av_dup_inc(proto_perl->Ifdpid, param); |
1d7c1841 GS |
10949 | |
10950 | /* internal state */ | |
10951 | PL_tainting = proto_perl->Itainting; | |
7135f00b | 10952 | PL_taint_warn = proto_perl->Itaint_warn; |
1d7c1841 GS |
10953 | PL_maxo = proto_perl->Imaxo; |
10954 | if (proto_perl->Iop_mask) | |
10955 | PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo); | |
10956 | else | |
10957 | PL_op_mask = Nullch; | |
06492da6 | 10958 | /* PL_asserting = proto_perl->Iasserting; */ |
1d7c1841 GS |
10959 | |
10960 | /* current interpreter roots */ | |
d2d73c3e | 10961 | PL_main_cv = cv_dup_inc(proto_perl->Imain_cv, param); |
1d7c1841 GS |
10962 | PL_main_root = OpREFCNT_inc(proto_perl->Imain_root); |
10963 | PL_main_start = proto_perl->Imain_start; | |
e977893f | 10964 | PL_eval_root = proto_perl->Ieval_root; |
1d7c1841 GS |
10965 | PL_eval_start = proto_perl->Ieval_start; |
10966 | ||
10967 | /* runtime control stuff */ | |
10968 | PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl); | |
10969 | PL_copline = proto_perl->Icopline; | |
10970 | ||
10971 | PL_filemode = proto_perl->Ifilemode; | |
10972 | PL_lastfd = proto_perl->Ilastfd; | |
10973 | PL_oldname = proto_perl->Ioldname; /* XXX not quite right */ | |
10974 | PL_Argv = NULL; | |
10975 | PL_Cmd = Nullch; | |
10976 | PL_gensym = proto_perl->Igensym; | |
10977 | PL_preambled = proto_perl->Ipreambled; | |
d2d73c3e | 10978 | PL_preambleav = av_dup_inc(proto_perl->Ipreambleav, param); |
1d7c1841 GS |
10979 | PL_laststatval = proto_perl->Ilaststatval; |
10980 | PL_laststype = proto_perl->Ilaststype; | |
10981 | PL_mess_sv = Nullsv; | |
10982 | ||
d2d73c3e | 10983 | PL_ors_sv = sv_dup_inc(proto_perl->Iors_sv, param); |
1d7c1841 GS |
10984 | PL_ofmt = SAVEPV(proto_perl->Iofmt); |
10985 | ||
10986 | /* interpreter atexit processing */ | |
10987 | PL_exitlistlen = proto_perl->Iexitlistlen; | |
10988 | if (PL_exitlistlen) { | |
10989 | New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
10990 | Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
10991 | } | |
10992 | else | |
10993 | PL_exitlist = (PerlExitListEntry*)NULL; | |
d2d73c3e | 10994 | PL_modglobal = hv_dup_inc(proto_perl->Imodglobal, param); |
19e8ce8e AB |
10995 | PL_custom_op_names = hv_dup_inc(proto_perl->Icustom_op_names,param); |
10996 | PL_custom_op_descs = hv_dup_inc(proto_perl->Icustom_op_descs,param); | |
1d7c1841 GS |
10997 | |
10998 | PL_profiledata = NULL; | |
a8fc9800 | 10999 | PL_rsfp = fp_dup(proto_perl->Irsfp, '<', param); |
1d7c1841 | 11000 | /* PL_rsfp_filters entries have fake IoDIRP() */ |
d2d73c3e | 11001 | PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters, param); |
1d7c1841 | 11002 | |
d2d73c3e | 11003 | PL_compcv = cv_dup(proto_perl->Icompcv, param); |
dd2155a4 DM |
11004 | |
11005 | PAD_CLONE_VARS(proto_perl, param); | |
1d7c1841 GS |
11006 | |
11007 | #ifdef HAVE_INTERP_INTERN | |
11008 | sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern); | |
11009 | #endif | |
11010 | ||
11011 | /* more statics moved here */ | |
11012 | PL_generation = proto_perl->Igeneration; | |
d2d73c3e | 11013 | PL_DBcv = cv_dup(proto_perl->IDBcv, param); |
1d7c1841 GS |
11014 | |
11015 | PL_in_clean_objs = proto_perl->Iin_clean_objs; | |
11016 | PL_in_clean_all = proto_perl->Iin_clean_all; | |
11017 | ||
11018 | PL_uid = proto_perl->Iuid; | |
11019 | PL_euid = proto_perl->Ieuid; | |
11020 | PL_gid = proto_perl->Igid; | |
11021 | PL_egid = proto_perl->Iegid; | |
11022 | PL_nomemok = proto_perl->Inomemok; | |
11023 | PL_an = proto_perl->Ian; | |
1d7c1841 GS |
11024 | PL_op_seqmax = proto_perl->Iop_seqmax; |
11025 | PL_evalseq = proto_perl->Ievalseq; | |
11026 | PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */ | |
11027 | PL_origalen = proto_perl->Iorigalen; | |
11028 | PL_pidstatus = newHV(); /* XXX flag for cloning? */ | |
11029 | PL_osname = SAVEPV(proto_perl->Iosname); | |
0bb09c15 | 11030 | PL_sh_path = proto_perl->Ish_path; /* XXX never deallocated */ |
1d7c1841 GS |
11031 | PL_sighandlerp = proto_perl->Isighandlerp; |
11032 | ||
11033 | ||
11034 | PL_runops = proto_perl->Irunops; | |
11035 | ||
11036 | Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char); | |
11037 | ||
11038 | #ifdef CSH | |
11039 | PL_cshlen = proto_perl->Icshlen; | |
74f1b2b8 | 11040 | PL_cshname = proto_perl->Icshname; /* XXX never deallocated */ |
1d7c1841 GS |
11041 | #endif |
11042 | ||
11043 | PL_lex_state = proto_perl->Ilex_state; | |
11044 | PL_lex_defer = proto_perl->Ilex_defer; | |
11045 | PL_lex_expect = proto_perl->Ilex_expect; | |
11046 | PL_lex_formbrack = proto_perl->Ilex_formbrack; | |
11047 | PL_lex_dojoin = proto_perl->Ilex_dojoin; | |
11048 | PL_lex_starts = proto_perl->Ilex_starts; | |
d2d73c3e AB |
11049 | PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff, param); |
11050 | PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl, param); | |
1d7c1841 GS |
11051 | PL_lex_op = proto_perl->Ilex_op; |
11052 | PL_lex_inpat = proto_perl->Ilex_inpat; | |
11053 | PL_lex_inwhat = proto_perl->Ilex_inwhat; | |
11054 | PL_lex_brackets = proto_perl->Ilex_brackets; | |
11055 | i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets); | |
11056 | PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i); | |
11057 | PL_lex_casemods = proto_perl->Ilex_casemods; | |
11058 | i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods); | |
11059 | PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i); | |
11060 | ||
11061 | Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE); | |
11062 | Copy(proto_perl->Inexttype, PL_nexttype, 5, I32); | |
11063 | PL_nexttoke = proto_perl->Inexttoke; | |
11064 | ||
1d773130 TB |
11065 | /* XXX This is probably masking the deeper issue of why |
11066 | * SvANY(proto_perl->Ilinestr) can be NULL at this point. For test case: | |
11067 | * http://archive.develooper.com/perl5-porters%40perl.org/msg83298.html | |
11068 | * (A little debugging with a watchpoint on it may help.) | |
11069 | */ | |
389edf32 TB |
11070 | if (SvANY(proto_perl->Ilinestr)) { |
11071 | PL_linestr = sv_dup_inc(proto_perl->Ilinestr, param); | |
11072 | i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr); | |
11073 | PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11074 | i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr); | |
11075 | PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11076 | i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr); | |
11077 | PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11078 | i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr); | |
11079 | PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11080 | } | |
11081 | else { | |
11082 | PL_linestr = NEWSV(65,79); | |
11083 | sv_upgrade(PL_linestr,SVt_PVIV); | |
11084 | sv_setpvn(PL_linestr,"",0); | |
11085 | PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
11086 | } | |
1d7c1841 | 11087 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
1d7c1841 GS |
11088 | PL_pending_ident = proto_perl->Ipending_ident; |
11089 | PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */ | |
11090 | ||
11091 | PL_expect = proto_perl->Iexpect; | |
11092 | ||
11093 | PL_multi_start = proto_perl->Imulti_start; | |
11094 | PL_multi_end = proto_perl->Imulti_end; | |
11095 | PL_multi_open = proto_perl->Imulti_open; | |
11096 | PL_multi_close = proto_perl->Imulti_close; | |
11097 | ||
11098 | PL_error_count = proto_perl->Ierror_count; | |
11099 | PL_subline = proto_perl->Isubline; | |
d2d73c3e | 11100 | PL_subname = sv_dup_inc(proto_perl->Isubname, param); |
1d7c1841 | 11101 | |
1d773130 | 11102 | /* XXX See comment on SvANY(proto_perl->Ilinestr) above */ |
389edf32 TB |
11103 | if (SvANY(proto_perl->Ilinestr)) { |
11104 | i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr); | |
11105 | PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11106 | i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr); | |
11107 | PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11108 | PL_last_lop_op = proto_perl->Ilast_lop_op; | |
11109 | } | |
11110 | else { | |
11111 | PL_last_uni = SvPVX(PL_linestr); | |
11112 | PL_last_lop = SvPVX(PL_linestr); | |
11113 | PL_last_lop_op = 0; | |
11114 | } | |
1d7c1841 | 11115 | PL_in_my = proto_perl->Iin_my; |
d2d73c3e | 11116 | PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash, param); |
1d7c1841 GS |
11117 | #ifdef FCRYPT |
11118 | PL_cryptseen = proto_perl->Icryptseen; | |
11119 | #endif | |
11120 | ||
11121 | PL_hints = proto_perl->Ihints; | |
11122 | ||
11123 | PL_amagic_generation = proto_perl->Iamagic_generation; | |
11124 | ||
11125 | #ifdef USE_LOCALE_COLLATE | |
11126 | PL_collation_ix = proto_perl->Icollation_ix; | |
11127 | PL_collation_name = SAVEPV(proto_perl->Icollation_name); | |
11128 | PL_collation_standard = proto_perl->Icollation_standard; | |
11129 | PL_collxfrm_base = proto_perl->Icollxfrm_base; | |
11130 | PL_collxfrm_mult = proto_perl->Icollxfrm_mult; | |
11131 | #endif /* USE_LOCALE_COLLATE */ | |
11132 | ||
11133 | #ifdef USE_LOCALE_NUMERIC | |
11134 | PL_numeric_name = SAVEPV(proto_perl->Inumeric_name); | |
11135 | PL_numeric_standard = proto_perl->Inumeric_standard; | |
11136 | PL_numeric_local = proto_perl->Inumeric_local; | |
d2d73c3e | 11137 | PL_numeric_radix_sv = sv_dup_inc(proto_perl->Inumeric_radix_sv, param); |
1d7c1841 GS |
11138 | #endif /* !USE_LOCALE_NUMERIC */ |
11139 | ||
11140 | /* utf8 character classes */ | |
d2d73c3e AB |
11141 | PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum, param); |
11142 | PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc, param); | |
11143 | PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii, param); | |
11144 | PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha, param); | |
11145 | PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space, param); | |
11146 | PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl, param); | |
11147 | PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph, param); | |
11148 | PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit, param); | |
11149 | PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper, param); | |
11150 | PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower, param); | |
11151 | PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print, param); | |
11152 | PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct, param); | |
11153 | PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit, param); | |
11154 | PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark, param); | |
11155 | PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper, param); | |
11156 | PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle, param); | |
11157 | PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower, param); | |
b4e400f9 | 11158 | PL_utf8_tofold = sv_dup_inc(proto_perl->Iutf8_tofold, param); |
82686b01 JH |
11159 | PL_utf8_idstart = sv_dup_inc(proto_perl->Iutf8_idstart, param); |
11160 | PL_utf8_idcont = sv_dup_inc(proto_perl->Iutf8_idcont, param); | |
1d7c1841 | 11161 | |
6c3182a5 | 11162 | /* Did the locale setup indicate UTF-8? */ |
9769094f | 11163 | PL_utf8locale = proto_perl->Iutf8locale; |
6c3182a5 JH |
11164 | /* Unicode features (see perlrun/-C) */ |
11165 | PL_unicode = proto_perl->Iunicode; | |
11166 | ||
11167 | /* Pre-5.8 signals control */ | |
11168 | PL_signals = proto_perl->Isignals; | |
11169 | ||
11170 | /* times() ticks per second */ | |
11171 | PL_clocktick = proto_perl->Iclocktick; | |
11172 | ||
11173 | /* Recursion stopper for PerlIO_find_layer */ | |
11174 | PL_in_load_module = proto_perl->Iin_load_module; | |
11175 | ||
11176 | /* sort() routine */ | |
11177 | PL_sort_RealCmp = proto_perl->Isort_RealCmp; | |
11178 | ||
1d7c1841 GS |
11179 | /* swatch cache */ |
11180 | PL_last_swash_hv = Nullhv; /* reinits on demand */ | |
11181 | PL_last_swash_klen = 0; | |
11182 | PL_last_swash_key[0]= '\0'; | |
11183 | PL_last_swash_tmps = (U8*)NULL; | |
11184 | PL_last_swash_slen = 0; | |
11185 | ||
11186 | /* perly.c globals */ | |
11187 | PL_yydebug = proto_perl->Iyydebug; | |
11188 | PL_yynerrs = proto_perl->Iyynerrs; | |
11189 | PL_yyerrflag = proto_perl->Iyyerrflag; | |
11190 | PL_yychar = proto_perl->Iyychar; | |
11191 | PL_yyval = proto_perl->Iyyval; | |
11192 | PL_yylval = proto_perl->Iyylval; | |
11193 | ||
11194 | PL_glob_index = proto_perl->Iglob_index; | |
11195 | PL_srand_called = proto_perl->Isrand_called; | |
11196 | PL_uudmap['M'] = 0; /* reinits on demand */ | |
11197 | PL_bitcount = Nullch; /* reinits on demand */ | |
11198 | ||
66fe0623 NIS |
11199 | if (proto_perl->Ipsig_pend) { |
11200 | Newz(0, PL_psig_pend, SIG_SIZE, int); | |
9dd79c3f | 11201 | } |
66fe0623 NIS |
11202 | else { |
11203 | PL_psig_pend = (int*)NULL; | |
11204 | } | |
11205 | ||
1d7c1841 | 11206 | if (proto_perl->Ipsig_ptr) { |
76d3c696 JH |
11207 | Newz(0, PL_psig_ptr, SIG_SIZE, SV*); |
11208 | Newz(0, PL_psig_name, SIG_SIZE, SV*); | |
76d3c696 | 11209 | for (i = 1; i < SIG_SIZE; i++) { |
d2d73c3e AB |
11210 | PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i], param); |
11211 | PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i], param); | |
1d7c1841 GS |
11212 | } |
11213 | } | |
11214 | else { | |
11215 | PL_psig_ptr = (SV**)NULL; | |
11216 | PL_psig_name = (SV**)NULL; | |
11217 | } | |
11218 | ||
11219 | /* thrdvar.h stuff */ | |
11220 | ||
a0739874 | 11221 | if (flags & CLONEf_COPY_STACKS) { |
1d7c1841 GS |
11222 | /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */ |
11223 | PL_tmps_ix = proto_perl->Ttmps_ix; | |
11224 | PL_tmps_max = proto_perl->Ttmps_max; | |
11225 | PL_tmps_floor = proto_perl->Ttmps_floor; | |
11226 | Newz(50, PL_tmps_stack, PL_tmps_max, SV*); | |
11227 | i = 0; | |
11228 | while (i <= PL_tmps_ix) { | |
d2d73c3e | 11229 | PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i], param); |
1d7c1841 GS |
11230 | ++i; |
11231 | } | |
11232 | ||
11233 | /* next PUSHMARK() sets *(PL_markstack_ptr+1) */ | |
11234 | i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack; | |
11235 | Newz(54, PL_markstack, i, I32); | |
11236 | PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max | |
11237 | - proto_perl->Tmarkstack); | |
11238 | PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr | |
11239 | - proto_perl->Tmarkstack); | |
11240 | Copy(proto_perl->Tmarkstack, PL_markstack, | |
11241 | PL_markstack_ptr - PL_markstack + 1, I32); | |
11242 | ||
11243 | /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix] | |
11244 | * NOTE: unlike the others! */ | |
11245 | PL_scopestack_ix = proto_perl->Tscopestack_ix; | |
11246 | PL_scopestack_max = proto_perl->Tscopestack_max; | |
11247 | Newz(54, PL_scopestack, PL_scopestack_max, I32); | |
11248 | Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32); | |
11249 | ||
11250 | /* next push_return() sets PL_retstack[PL_retstack_ix] | |
11251 | * NOTE: unlike the others! */ | |
11252 | PL_retstack_ix = proto_perl->Tretstack_ix; | |
11253 | PL_retstack_max = proto_perl->Tretstack_max; | |
11254 | Newz(54, PL_retstack, PL_retstack_max, OP*); | |
ce0a1ae0 | 11255 | Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, OP*); |
1d7c1841 GS |
11256 | |
11257 | /* NOTE: si_dup() looks at PL_markstack */ | |
d2d73c3e | 11258 | PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo, param); |
1d7c1841 GS |
11259 | |
11260 | /* PL_curstack = PL_curstackinfo->si_stack; */ | |
d2d73c3e AB |
11261 | PL_curstack = av_dup(proto_perl->Tcurstack, param); |
11262 | PL_mainstack = av_dup(proto_perl->Tmainstack, param); | |
1d7c1841 GS |
11263 | |
11264 | /* next PUSHs() etc. set *(PL_stack_sp+1) */ | |
11265 | PL_stack_base = AvARRAY(PL_curstack); | |
11266 | PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp | |
11267 | - proto_perl->Tstack_base); | |
11268 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); | |
11269 | ||
11270 | /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix] | |
11271 | * NOTE: unlike the others! */ | |
11272 | PL_savestack_ix = proto_perl->Tsavestack_ix; | |
11273 | PL_savestack_max = proto_perl->Tsavestack_max; | |
11274 | /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/ | |
d2d73c3e | 11275 | PL_savestack = ss_dup(proto_perl, param); |
1d7c1841 GS |
11276 | } |
11277 | else { | |
11278 | init_stacks(); | |
985e7056 | 11279 | ENTER; /* perl_destruct() wants to LEAVE; */ |
1d7c1841 GS |
11280 | } |
11281 | ||
11282 | PL_start_env = proto_perl->Tstart_env; /* XXXXXX */ | |
11283 | PL_top_env = &PL_start_env; | |
11284 | ||
11285 | PL_op = proto_perl->Top; | |
11286 | ||
11287 | PL_Sv = Nullsv; | |
11288 | PL_Xpv = (XPV*)NULL; | |
11289 | PL_na = proto_perl->Tna; | |
11290 | ||
11291 | PL_statbuf = proto_perl->Tstatbuf; | |
11292 | PL_statcache = proto_perl->Tstatcache; | |
d2d73c3e AB |
11293 | PL_statgv = gv_dup(proto_perl->Tstatgv, param); |
11294 | PL_statname = sv_dup_inc(proto_perl->Tstatname, param); | |
1d7c1841 GS |
11295 | #ifdef HAS_TIMES |
11296 | PL_timesbuf = proto_perl->Ttimesbuf; | |
11297 | #endif | |
11298 | ||
11299 | PL_tainted = proto_perl->Ttainted; | |
11300 | PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */ | |
d2d73c3e AB |
11301 | PL_rs = sv_dup_inc(proto_perl->Trs, param); |
11302 | PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv, param); | |
11303 | PL_ofs_sv = sv_dup_inc(proto_perl->Tofs_sv, param); | |
11304 | PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv, param); | |
1d7c1841 | 11305 | PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */ |
d2d73c3e AB |
11306 | PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget, param); |
11307 | PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget, param); | |
11308 | PL_formtarget = sv_dup(proto_perl->Tformtarget, param); | |
1d7c1841 GS |
11309 | |
11310 | PL_restartop = proto_perl->Trestartop; | |
11311 | PL_in_eval = proto_perl->Tin_eval; | |
11312 | PL_delaymagic = proto_perl->Tdelaymagic; | |
11313 | PL_dirty = proto_perl->Tdirty; | |
11314 | PL_localizing = proto_perl->Tlocalizing; | |
11315 | ||
14dd3ad8 | 11316 | #ifdef PERL_FLEXIBLE_EXCEPTIONS |
1d7c1841 | 11317 | PL_protect = proto_perl->Tprotect; |
14dd3ad8 | 11318 | #endif |
d2d73c3e | 11319 | PL_errors = sv_dup_inc(proto_perl->Terrors, param); |
1d7c1841 GS |
11320 | PL_av_fetch_sv = Nullsv; |
11321 | PL_hv_fetch_sv = Nullsv; | |
11322 | Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */ | |
11323 | PL_modcount = proto_perl->Tmodcount; | |
11324 | PL_lastgotoprobe = Nullop; | |
11325 | PL_dumpindent = proto_perl->Tdumpindent; | |
11326 | ||
11327 | PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl); | |
d2d73c3e AB |
11328 | PL_sortstash = hv_dup(proto_perl->Tsortstash, param); |
11329 | PL_firstgv = gv_dup(proto_perl->Tfirstgv, param); | |
11330 | PL_secondgv = gv_dup(proto_perl->Tsecondgv, param); | |
1d7c1841 GS |
11331 | PL_sortcxix = proto_perl->Tsortcxix; |
11332 | PL_efloatbuf = Nullch; /* reinits on demand */ | |
11333 | PL_efloatsize = 0; /* reinits on demand */ | |
11334 | ||
11335 | /* regex stuff */ | |
11336 | ||
11337 | PL_screamfirst = NULL; | |
11338 | PL_screamnext = NULL; | |
11339 | PL_maxscream = -1; /* reinits on demand */ | |
11340 | PL_lastscream = Nullsv; | |
11341 | ||
11342 | PL_watchaddr = NULL; | |
11343 | PL_watchok = Nullch; | |
11344 | ||
11345 | PL_regdummy = proto_perl->Tregdummy; | |
1d7c1841 GS |
11346 | PL_regprecomp = Nullch; |
11347 | PL_regnpar = 0; | |
11348 | PL_regsize = 0; | |
1d7c1841 GS |
11349 | PL_colorset = 0; /* reinits PL_colors[] */ |
11350 | /*PL_colors[6] = {0,0,0,0,0,0};*/ | |
1d7c1841 GS |
11351 | PL_reginput = Nullch; |
11352 | PL_regbol = Nullch; | |
11353 | PL_regeol = Nullch; | |
11354 | PL_regstartp = (I32*)NULL; | |
11355 | PL_regendp = (I32*)NULL; | |
11356 | PL_reglastparen = (U32*)NULL; | |
11357 | PL_regtill = Nullch; | |
1d7c1841 GS |
11358 | PL_reg_start_tmp = (char**)NULL; |
11359 | PL_reg_start_tmpl = 0; | |
11360 | PL_regdata = (struct reg_data*)NULL; | |
11361 | PL_bostr = Nullch; | |
11362 | PL_reg_flags = 0; | |
11363 | PL_reg_eval_set = 0; | |
11364 | PL_regnarrate = 0; | |
11365 | PL_regprogram = (regnode*)NULL; | |
11366 | PL_regindent = 0; | |
11367 | PL_regcc = (CURCUR*)NULL; | |
11368 | PL_reg_call_cc = (struct re_cc_state*)NULL; | |
11369 | PL_reg_re = (regexp*)NULL; | |
11370 | PL_reg_ganch = Nullch; | |
11371 | PL_reg_sv = Nullsv; | |
53c4c00c | 11372 | PL_reg_match_utf8 = FALSE; |
1d7c1841 GS |
11373 | PL_reg_magic = (MAGIC*)NULL; |
11374 | PL_reg_oldpos = 0; | |
11375 | PL_reg_oldcurpm = (PMOP*)NULL; | |
11376 | PL_reg_curpm = (PMOP*)NULL; | |
11377 | PL_reg_oldsaved = Nullch; | |
11378 | PL_reg_oldsavedlen = 0; | |
ed252734 | 11379 | #ifdef PERL_COPY_ON_WRITE |
504cff3b | 11380 | PL_nrs = Nullsv; |
ed252734 | 11381 | #endif |
1d7c1841 GS |
11382 | PL_reg_maxiter = 0; |
11383 | PL_reg_leftiter = 0; | |
11384 | PL_reg_poscache = Nullch; | |
11385 | PL_reg_poscache_size= 0; | |
11386 | ||
11387 | /* RE engine - function pointers */ | |
11388 | PL_regcompp = proto_perl->Tregcompp; | |
11389 | PL_regexecp = proto_perl->Tregexecp; | |
11390 | PL_regint_start = proto_perl->Tregint_start; | |
11391 | PL_regint_string = proto_perl->Tregint_string; | |
11392 | PL_regfree = proto_perl->Tregfree; | |
11393 | ||
11394 | PL_reginterp_cnt = 0; | |
11395 | PL_reg_starttry = 0; | |
11396 | ||
a2efc822 SC |
11397 | /* Pluggable optimizer */ |
11398 | PL_peepp = proto_perl->Tpeepp; | |
11399 | ||
a0739874 DM |
11400 | if (!(flags & CLONEf_KEEP_PTR_TABLE)) { |
11401 | ptr_table_free(PL_ptr_table); | |
11402 | PL_ptr_table = NULL; | |
11403 | } | |
8cf8f3d1 | 11404 | |
f284b03f AMS |
11405 | /* Call the ->CLONE method, if it exists, for each of the stashes |
11406 | identified by sv_dup() above. | |
11407 | */ | |
d2d73c3e AB |
11408 | while(av_len(param->stashes) != -1) { |
11409 | HV* stash = (HV*) av_shift(param->stashes); | |
f284b03f AMS |
11410 | GV* cloner = gv_fetchmethod_autoload(stash, "CLONE", 0); |
11411 | if (cloner && GvCV(cloner)) { | |
11412 | dSP; | |
11413 | ENTER; | |
11414 | SAVETMPS; | |
11415 | PUSHMARK(SP); | |
dc507217 | 11416 | XPUSHs(sv_2mortal(newSVpv(HvNAME(stash), 0))); |
f284b03f AMS |
11417 | PUTBACK; |
11418 | call_sv((SV*)GvCV(cloner), G_DISCARD); | |
11419 | FREETMPS; | |
11420 | LEAVE; | |
11421 | } | |
4a09accc | 11422 | } |
a0739874 | 11423 | |
dc507217 | 11424 | SvREFCNT_dec(param->stashes); |
dc507217 | 11425 | |
1d7c1841 | 11426 | return my_perl; |
1d7c1841 GS |
11427 | } |
11428 | ||
1d7c1841 | 11429 | #endif /* USE_ITHREADS */ |
a0ae6670 | 11430 | |
9f4817db | 11431 | /* |
ccfc67b7 JH |
11432 | =head1 Unicode Support |
11433 | ||
9f4817db JH |
11434 | =for apidoc sv_recode_to_utf8 |
11435 | ||
5d170f3a JH |
11436 | The encoding is assumed to be an Encode object, on entry the PV |
11437 | of the sv is assumed to be octets in that encoding, and the sv | |
11438 | will be converted into Unicode (and UTF-8). | |
9f4817db | 11439 | |
5d170f3a JH |
11440 | If the sv already is UTF-8 (or if it is not POK), or if the encoding |
11441 | is not a reference, nothing is done to the sv. If the encoding is not | |
1768d7eb JH |
11442 | an C<Encode::XS> Encoding object, bad things will happen. |
11443 | (See F<lib/encoding.pm> and L<Encode>). | |
9f4817db | 11444 | |
5d170f3a | 11445 | The PV of the sv is returned. |
9f4817db | 11446 | |
5d170f3a JH |
11447 | =cut */ |
11448 | ||
11449 | char * | |
11450 | Perl_sv_recode_to_utf8(pTHX_ SV *sv, SV *encoding) | |
11451 | { | |
220e2d4e | 11452 | if (SvPOK(sv) && !SvUTF8(sv) && !IN_BYTES && SvROK(encoding)) { |
d0063567 DK |
11453 | SV *uni; |
11454 | STRLEN len; | |
11455 | char *s; | |
11456 | dSP; | |
11457 | ENTER; | |
11458 | SAVETMPS; | |
220e2d4e | 11459 | save_re_context(); |
d0063567 DK |
11460 | PUSHMARK(sp); |
11461 | EXTEND(SP, 3); | |
11462 | XPUSHs(encoding); | |
11463 | XPUSHs(sv); | |
f9893866 NIS |
11464 | /* |
11465 | NI-S 2002/07/09 | |
11466 | Passing sv_yes is wrong - it needs to be or'ed set of constants | |
11467 | for Encode::XS, while UTf-8 decode (currently) assumes a true value means | |
11468 | remove converted chars from source. | |
11469 | ||
11470 | Both will default the value - let them. | |
11471 | ||
d0063567 | 11472 | XPUSHs(&PL_sv_yes); |
f9893866 | 11473 | */ |
d0063567 DK |
11474 | PUTBACK; |
11475 | call_method("decode", G_SCALAR); | |
11476 | SPAGAIN; | |
11477 | uni = POPs; | |
11478 | PUTBACK; | |
11479 | s = SvPV(uni, len); | |
d0063567 DK |
11480 | if (s != SvPVX(sv)) { |
11481 | SvGROW(sv, len + 1); | |
11482 | Move(s, SvPVX(sv), len, char); | |
11483 | SvCUR_set(sv, len); | |
11484 | SvPVX(sv)[len] = 0; | |
11485 | } | |
11486 | FREETMPS; | |
11487 | LEAVE; | |
d0063567 | 11488 | SvUTF8_on(sv); |
f9893866 NIS |
11489 | } |
11490 | return SvPVX(sv); | |
9f4817db JH |
11491 | } |
11492 | ||
220e2d4e IH |
11493 | /* |
11494 | =for apidoc sv_cat_decode | |
11495 | ||
11496 | The encoding is assumed to be an Encode object, the PV of the ssv is | |
11497 | assumed to be octets in that encoding and decoding the input starts | |
11498 | from the position which (PV + *offset) pointed to. The dsv will be | |
11499 | concatenated the decoded UTF-8 string from ssv. Decoding will terminate | |
11500 | when the string tstr appears in decoding output or the input ends on | |
11501 | the PV of the ssv. The value which the offset points will be modified | |
11502 | to the last input position on the ssv. | |
68795e93 | 11503 | |
220e2d4e IH |
11504 | Returns TRUE if the terminator was found, else returns FALSE. |
11505 | ||
11506 | =cut */ | |
11507 | ||
11508 | bool | |
11509 | Perl_sv_cat_decode(pTHX_ SV *dsv, SV *encoding, | |
11510 | SV *ssv, int *offset, char *tstr, int tlen) | |
11511 | { | |
a73e8557 | 11512 | bool ret = FALSE; |
220e2d4e | 11513 | if (SvPOK(ssv) && SvPOK(dsv) && SvROK(encoding) && offset) { |
220e2d4e IH |
11514 | SV *offsv; |
11515 | dSP; | |
11516 | ENTER; | |
11517 | SAVETMPS; | |
11518 | save_re_context(); | |
11519 | PUSHMARK(sp); | |
11520 | EXTEND(SP, 6); | |
11521 | XPUSHs(encoding); | |
11522 | XPUSHs(dsv); | |
11523 | XPUSHs(ssv); | |
11524 | XPUSHs(offsv = sv_2mortal(newSViv(*offset))); | |
11525 | XPUSHs(sv_2mortal(newSVpvn(tstr, tlen))); | |
11526 | PUTBACK; | |
11527 | call_method("cat_decode", G_SCALAR); | |
11528 | SPAGAIN; | |
11529 | ret = SvTRUE(TOPs); | |
11530 | *offset = SvIV(offsv); | |
11531 | PUTBACK; | |
11532 | FREETMPS; | |
11533 | LEAVE; | |
220e2d4e | 11534 | } |
a73e8557 JH |
11535 | else |
11536 | Perl_croak(aTHX_ "Invalid argument to sv_cat_decode"); | |
11537 | return ret; | |
220e2d4e | 11538 | } |
f9893866 | 11539 |