Commit | Line | Data |
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a0d0e21e | 1 | /* sv.c |
79072805 | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
241d1a3b | 4 | * 2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others |
79072805 LW |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
a0d0e21e | 9 | * "I wonder what the Entish is for 'yes' and 'no'," he thought. |
645c22ef DM |
10 | * |
11 | * | |
5e045b90 AMS |
12 | * This file contains the code that creates, manipulates and destroys |
13 | * scalar values (SVs). The other types (AV, HV, GV, etc.) reuse the | |
14 | * structure of an SV, so their creation and destruction is handled | |
15 | * here; higher-level functions are in av.c, hv.c, and so on. Opcode | |
16 | * level functions (eg. substr, split, join) for each of the types are | |
17 | * in the pp*.c files. | |
79072805 LW |
18 | */ |
19 | ||
20 | #include "EXTERN.h" | |
864dbfa3 | 21 | #define PERL_IN_SV_C |
79072805 | 22 | #include "perl.h" |
d2f185dc | 23 | #include "regcomp.h" |
79072805 | 24 | |
51371543 | 25 | #define FCALL *f |
2c5424a7 | 26 | |
2f8ed50e OS |
27 | #ifdef __Lynx__ |
28 | /* Missing proto on LynxOS */ | |
29 | char *gconvert(double, int, int, char *); | |
30 | #endif | |
31 | ||
e23c8137 JH |
32 | #ifdef PERL_UTF8_CACHE_ASSERT |
33 | /* The cache element 0 is the Unicode offset; | |
34 | * the cache element 1 is the byte offset of the element 0; | |
35 | * the cache element 2 is the Unicode length of the substring; | |
36 | * the cache element 3 is the byte length of the substring; | |
37 | * The checking of the substring side would be good | |
38 | * but substr() has enough code paths to make my head spin; | |
39 | * if adding more checks watch out for the following tests: | |
40 | * t/op/index.t t/op/length.t t/op/pat.t t/op/substr.t | |
41 | * lib/utf8.t lib/Unicode/Collate/t/index.t | |
42 | * --jhi | |
43 | */ | |
44 | #define ASSERT_UTF8_CACHE(cache) \ | |
45 | STMT_START { if (cache) { assert((cache)[0] <= (cache)[1]); } } STMT_END | |
46 | #else | |
47 | #define ASSERT_UTF8_CACHE(cache) NOOP | |
48 | #endif | |
49 | ||
f8c7b90f | 50 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d | 51 | #define SV_COW_NEXT_SV(sv) INT2PTR(SV *,SvUVX(sv)) |
607fa7f2 | 52 | #define SV_COW_NEXT_SV_SET(current,next) SvUV_set(current, PTR2UV(next)) |
b5ccf5f2 | 53 | /* This is a pessimistic view. Scalar must be purely a read-write PV to copy- |
765f542d | 54 | on-write. */ |
765f542d | 55 | #endif |
645c22ef DM |
56 | |
57 | /* ============================================================================ | |
58 | ||
59 | =head1 Allocation and deallocation of SVs. | |
60 | ||
5e045b90 AMS |
61 | An SV (or AV, HV, etc.) is allocated in two parts: the head (struct sv, |
62 | av, hv...) contains type and reference count information, as well as a | |
63 | pointer to the body (struct xrv, xpv, xpviv...), which contains fields | |
64 | specific to each type. | |
65 | ||
4977e971 NC |
66 | Normally, this allocation is done using arenas, which by default are |
67 | approximately 4K chunks of memory parcelled up into N heads or bodies. The | |
68 | first slot in each arena is reserved, and is used to hold a link to the next | |
69 | arena. In the case of heads, the unused first slot also contains some flags | |
70 | and a note of the number of slots. Snaked through each arena chain is a | |
5e045b90 | 71 | linked list of free items; when this becomes empty, an extra arena is |
4977e971 | 72 | allocated and divided up into N items which are threaded into the free list. |
645c22ef DM |
73 | |
74 | The following global variables are associated with arenas: | |
75 | ||
76 | PL_sv_arenaroot pointer to list of SV arenas | |
77 | PL_sv_root pointer to list of free SV structures | |
78 | ||
79 | PL_foo_arenaroot pointer to list of foo arenas, | |
80 | PL_foo_root pointer to list of free foo bodies | |
81 | ... for foo in xiv, xnv, xrv, xpv etc. | |
82 | ||
83 | Note that some of the larger and more rarely used body types (eg xpvio) | |
84 | are not allocated using arenas, but are instead just malloc()/free()ed as | |
85 | required. Also, if PURIFY is defined, arenas are abandoned altogether, | |
86 | with all items individually malloc()ed. In addition, a few SV heads are | |
87 | not allocated from an arena, but are instead directly created as static | |
4977e971 NC |
88 | or auto variables, eg PL_sv_undef. The size of arenas can be changed from |
89 | the default by setting PERL_ARENA_SIZE appropriately at compile time. | |
645c22ef DM |
90 | |
91 | The SV arena serves the secondary purpose of allowing still-live SVs | |
92 | to be located and destroyed during final cleanup. | |
93 | ||
94 | At the lowest level, the macros new_SV() and del_SV() grab and free | |
95 | an SV head. (If debugging with -DD, del_SV() calls the function S_del_sv() | |
96 | to return the SV to the free list with error checking.) new_SV() calls | |
97 | more_sv() / sv_add_arena() to add an extra arena if the free list is empty. | |
98 | SVs in the free list have their SvTYPE field set to all ones. | |
99 | ||
100 | Similarly, there are macros new_XIV()/del_XIV(), new_XNV()/del_XNV() etc | |
101 | that allocate and return individual body types. Normally these are mapped | |
ff276b08 RG |
102 | to the arena-manipulating functions new_xiv()/del_xiv() etc, but may be |
103 | instead mapped directly to malloc()/free() if PURIFY is defined. The | |
645c22ef DM |
104 | new/del functions remove from, or add to, the appropriate PL_foo_root |
105 | list, and call more_xiv() etc to add a new arena if the list is empty. | |
106 | ||
ff276b08 | 107 | At the time of very final cleanup, sv_free_arenas() is called from |
645c22ef DM |
108 | perl_destruct() to physically free all the arenas allocated since the |
109 | start of the interpreter. Note that this also clears PL_he_arenaroot, | |
110 | which is otherwise dealt with in hv.c. | |
111 | ||
112 | Manipulation of any of the PL_*root pointers is protected by enclosing | |
113 | LOCK_SV_MUTEX; ... UNLOCK_SV_MUTEX calls which should Do the Right Thing | |
114 | if threads are enabled. | |
115 | ||
116 | The function visit() scans the SV arenas list, and calls a specified | |
117 | function for each SV it finds which is still live - ie which has an SvTYPE | |
118 | other than all 1's, and a non-zero SvREFCNT. visit() is used by the | |
119 | following functions (specified as [function that calls visit()] / [function | |
120 | called by visit() for each SV]): | |
121 | ||
122 | sv_report_used() / do_report_used() | |
123 | dump all remaining SVs (debugging aid) | |
124 | ||
125 | sv_clean_objs() / do_clean_objs(),do_clean_named_objs() | |
126 | Attempt to free all objects pointed to by RVs, | |
127 | and, unless DISABLE_DESTRUCTOR_KLUDGE is defined, | |
128 | try to do the same for all objects indirectly | |
129 | referenced by typeglobs too. Called once from | |
130 | perl_destruct(), prior to calling sv_clean_all() | |
131 | below. | |
132 | ||
133 | sv_clean_all() / do_clean_all() | |
134 | SvREFCNT_dec(sv) each remaining SV, possibly | |
135 | triggering an sv_free(). It also sets the | |
136 | SVf_BREAK flag on the SV to indicate that the | |
137 | refcnt has been artificially lowered, and thus | |
138 | stopping sv_free() from giving spurious warnings | |
139 | about SVs which unexpectedly have a refcnt | |
140 | of zero. called repeatedly from perl_destruct() | |
141 | until there are no SVs left. | |
142 | ||
143 | =head2 Summary | |
144 | ||
145 | Private API to rest of sv.c | |
146 | ||
147 | new_SV(), del_SV(), | |
148 | ||
149 | new_XIV(), del_XIV(), | |
150 | new_XNV(), del_XNV(), | |
151 | etc | |
152 | ||
153 | Public API: | |
154 | ||
8cf8f3d1 | 155 | sv_report_used(), sv_clean_objs(), sv_clean_all(), sv_free_arenas() |
645c22ef DM |
156 | |
157 | ||
158 | =cut | |
159 | ||
160 | ============================================================================ */ | |
161 | ||
162 | ||
51371543 | 163 | |
4561caa4 CS |
164 | /* |
165 | * "A time to plant, and a time to uproot what was planted..." | |
166 | */ | |
167 | ||
77354fb4 NC |
168 | /* |
169 | * nice_chunk and nice_chunk size need to be set | |
170 | * and queried under the protection of sv_mutex | |
171 | */ | |
172 | void | |
173 | Perl_offer_nice_chunk(pTHX_ void *chunk, U32 chunk_size) | |
174 | { | |
175 | void *new_chunk; | |
176 | U32 new_chunk_size; | |
177 | LOCK_SV_MUTEX; | |
178 | new_chunk = (void *)(chunk); | |
179 | new_chunk_size = (chunk_size); | |
180 | if (new_chunk_size > PL_nice_chunk_size) { | |
181 | Safefree(PL_nice_chunk); | |
182 | PL_nice_chunk = (char *) new_chunk; | |
183 | PL_nice_chunk_size = new_chunk_size; | |
184 | } else { | |
185 | Safefree(chunk); | |
186 | } | |
187 | UNLOCK_SV_MUTEX; | |
188 | } | |
cac9b346 | 189 | |
fd0854ff | 190 | #ifdef DEBUG_LEAKING_SCALARS |
22162ca8 | 191 | # define FREE_SV_DEBUG_FILE(sv) Safefree((sv)->sv_debug_file) |
fd0854ff DM |
192 | #else |
193 | # define FREE_SV_DEBUG_FILE(sv) | |
194 | #endif | |
195 | ||
053fc874 GS |
196 | #define plant_SV(p) \ |
197 | STMT_START { \ | |
fd0854ff | 198 | FREE_SV_DEBUG_FILE(p); \ |
053fc874 GS |
199 | SvANY(p) = (void *)PL_sv_root; \ |
200 | SvFLAGS(p) = SVTYPEMASK; \ | |
201 | PL_sv_root = (p); \ | |
202 | --PL_sv_count; \ | |
203 | } STMT_END | |
a0d0e21e | 204 | |
fba3b22e | 205 | /* sv_mutex must be held while calling uproot_SV() */ |
053fc874 GS |
206 | #define uproot_SV(p) \ |
207 | STMT_START { \ | |
208 | (p) = PL_sv_root; \ | |
209 | PL_sv_root = (SV*)SvANY(p); \ | |
210 | ++PL_sv_count; \ | |
211 | } STMT_END | |
212 | ||
645c22ef | 213 | |
cac9b346 NC |
214 | /* make some more SVs by adding another arena */ |
215 | ||
216 | /* sv_mutex must be held while calling more_sv() */ | |
217 | STATIC SV* | |
218 | S_more_sv(pTHX) | |
219 | { | |
220 | SV* sv; | |
221 | ||
222 | if (PL_nice_chunk) { | |
223 | sv_add_arena(PL_nice_chunk, PL_nice_chunk_size, 0); | |
224 | PL_nice_chunk = Nullch; | |
225 | PL_nice_chunk_size = 0; | |
226 | } | |
227 | else { | |
228 | char *chunk; /* must use New here to match call to */ | |
a02a5408 | 229 | Newx(chunk,PERL_ARENA_SIZE,char); /* Safefree() in sv_free_arenas() */ |
2e7ed132 | 230 | sv_add_arena(chunk, PERL_ARENA_SIZE, 0); |
cac9b346 NC |
231 | } |
232 | uproot_SV(sv); | |
233 | return sv; | |
234 | } | |
235 | ||
645c22ef DM |
236 | /* new_SV(): return a new, empty SV head */ |
237 | ||
eba0f806 DM |
238 | #ifdef DEBUG_LEAKING_SCALARS |
239 | /* provide a real function for a debugger to play with */ | |
240 | STATIC SV* | |
241 | S_new_SV(pTHX) | |
242 | { | |
243 | SV* sv; | |
244 | ||
245 | LOCK_SV_MUTEX; | |
246 | if (PL_sv_root) | |
247 | uproot_SV(sv); | |
248 | else | |
cac9b346 | 249 | sv = S_more_sv(aTHX); |
eba0f806 DM |
250 | UNLOCK_SV_MUTEX; |
251 | SvANY(sv) = 0; | |
252 | SvREFCNT(sv) = 1; | |
253 | SvFLAGS(sv) = 0; | |
fd0854ff DM |
254 | sv->sv_debug_optype = PL_op ? PL_op->op_type : 0; |
255 | sv->sv_debug_line = (U16) ((PL_copline == NOLINE) ? | |
256 | (PL_curcop ? CopLINE(PL_curcop) : 0) : PL_copline); | |
257 | sv->sv_debug_inpad = 0; | |
258 | sv->sv_debug_cloned = 0; | |
fd0854ff | 259 | sv->sv_debug_file = PL_curcop ? savepv(CopFILE(PL_curcop)): NULL; |
fd0854ff | 260 | |
eba0f806 DM |
261 | return sv; |
262 | } | |
263 | # define new_SV(p) (p)=S_new_SV(aTHX) | |
264 | ||
265 | #else | |
266 | # define new_SV(p) \ | |
053fc874 GS |
267 | STMT_START { \ |
268 | LOCK_SV_MUTEX; \ | |
269 | if (PL_sv_root) \ | |
270 | uproot_SV(p); \ | |
271 | else \ | |
cac9b346 | 272 | (p) = S_more_sv(aTHX); \ |
053fc874 GS |
273 | UNLOCK_SV_MUTEX; \ |
274 | SvANY(p) = 0; \ | |
275 | SvREFCNT(p) = 1; \ | |
276 | SvFLAGS(p) = 0; \ | |
277 | } STMT_END | |
eba0f806 | 278 | #endif |
463ee0b2 | 279 | |
645c22ef DM |
280 | |
281 | /* del_SV(): return an empty SV head to the free list */ | |
282 | ||
a0d0e21e | 283 | #ifdef DEBUGGING |
4561caa4 | 284 | |
053fc874 GS |
285 | #define del_SV(p) \ |
286 | STMT_START { \ | |
287 | LOCK_SV_MUTEX; \ | |
aea4f609 | 288 | if (DEBUG_D_TEST) \ |
053fc874 GS |
289 | del_sv(p); \ |
290 | else \ | |
291 | plant_SV(p); \ | |
292 | UNLOCK_SV_MUTEX; \ | |
293 | } STMT_END | |
a0d0e21e | 294 | |
76e3520e | 295 | STATIC void |
cea2e8a9 | 296 | S_del_sv(pTHX_ SV *p) |
463ee0b2 | 297 | { |
aea4f609 | 298 | if (DEBUG_D_TEST) { |
4633a7c4 | 299 | SV* sva; |
a3b680e6 | 300 | bool ok = 0; |
3280af22 | 301 | for (sva = PL_sv_arenaroot; sva; sva = (SV *) SvANY(sva)) { |
53c1dcc0 AL |
302 | const SV * const sv = sva + 1; |
303 | const SV * const svend = &sva[SvREFCNT(sva)]; | |
c0ff570e | 304 | if (p >= sv && p < svend) { |
a0d0e21e | 305 | ok = 1; |
c0ff570e NC |
306 | break; |
307 | } | |
a0d0e21e LW |
308 | } |
309 | if (!ok) { | |
0453d815 | 310 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 311 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
472d47bc SB |
312 | "Attempt to free non-arena SV: 0x%"UVxf |
313 | pTHX__FORMAT, PTR2UV(p) pTHX__VALUE); | |
a0d0e21e LW |
314 | return; |
315 | } | |
316 | } | |
4561caa4 | 317 | plant_SV(p); |
463ee0b2 | 318 | } |
a0d0e21e | 319 | |
4561caa4 CS |
320 | #else /* ! DEBUGGING */ |
321 | ||
322 | #define del_SV(p) plant_SV(p) | |
323 | ||
324 | #endif /* DEBUGGING */ | |
463ee0b2 | 325 | |
645c22ef DM |
326 | |
327 | /* | |
ccfc67b7 JH |
328 | =head1 SV Manipulation Functions |
329 | ||
645c22ef DM |
330 | =for apidoc sv_add_arena |
331 | ||
332 | Given a chunk of memory, link it to the head of the list of arenas, | |
333 | and split it into a list of free SVs. | |
334 | ||
335 | =cut | |
336 | */ | |
337 | ||
4633a7c4 | 338 | void |
864dbfa3 | 339 | Perl_sv_add_arena(pTHX_ char *ptr, U32 size, U32 flags) |
463ee0b2 | 340 | { |
4633a7c4 | 341 | SV* sva = (SV*)ptr; |
463ee0b2 LW |
342 | register SV* sv; |
343 | register SV* svend; | |
4633a7c4 LW |
344 | |
345 | /* The first SV in an arena isn't an SV. */ | |
3280af22 | 346 | SvANY(sva) = (void *) PL_sv_arenaroot; /* ptr to next arena */ |
4633a7c4 LW |
347 | SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */ |
348 | SvFLAGS(sva) = flags; /* FAKE if not to be freed */ | |
349 | ||
3280af22 NIS |
350 | PL_sv_arenaroot = sva; |
351 | PL_sv_root = sva + 1; | |
4633a7c4 LW |
352 | |
353 | svend = &sva[SvREFCNT(sva) - 1]; | |
354 | sv = sva + 1; | |
463ee0b2 | 355 | while (sv < svend) { |
a0d0e21e | 356 | SvANY(sv) = (void *)(SV*)(sv + 1); |
03e36789 | 357 | #ifdef DEBUGGING |
978b032e | 358 | SvREFCNT(sv) = 0; |
03e36789 NC |
359 | #endif |
360 | /* Must always set typemask because it's awlays checked in on cleanup | |
361 | when the arenas are walked looking for objects. */ | |
8990e307 | 362 | SvFLAGS(sv) = SVTYPEMASK; |
463ee0b2 LW |
363 | sv++; |
364 | } | |
365 | SvANY(sv) = 0; | |
03e36789 NC |
366 | #ifdef DEBUGGING |
367 | SvREFCNT(sv) = 0; | |
368 | #endif | |
4633a7c4 LW |
369 | SvFLAGS(sv) = SVTYPEMASK; |
370 | } | |
371 | ||
055972dc DM |
372 | /* visit(): call the named function for each non-free SV in the arenas |
373 | * whose flags field matches the flags/mask args. */ | |
645c22ef | 374 | |
5226ed68 | 375 | STATIC I32 |
055972dc | 376 | S_visit(pTHX_ SVFUNC_t f, U32 flags, U32 mask) |
8990e307 | 377 | { |
4633a7c4 | 378 | SV* sva; |
5226ed68 | 379 | I32 visited = 0; |
8990e307 | 380 | |
3280af22 | 381 | for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) { |
53c1dcc0 | 382 | register const SV * const svend = &sva[SvREFCNT(sva)]; |
a3b680e6 | 383 | register SV* sv; |
4561caa4 | 384 | for (sv = sva + 1; sv < svend; ++sv) { |
055972dc DM |
385 | if (SvTYPE(sv) != SVTYPEMASK |
386 | && (sv->sv_flags & mask) == flags | |
387 | && SvREFCNT(sv)) | |
388 | { | |
acfe0abc | 389 | (FCALL)(aTHX_ sv); |
5226ed68 JH |
390 | ++visited; |
391 | } | |
8990e307 LW |
392 | } |
393 | } | |
5226ed68 | 394 | return visited; |
8990e307 LW |
395 | } |
396 | ||
758a08c3 JH |
397 | #ifdef DEBUGGING |
398 | ||
645c22ef DM |
399 | /* called by sv_report_used() for each live SV */ |
400 | ||
401 | static void | |
acfe0abc | 402 | do_report_used(pTHX_ SV *sv) |
645c22ef DM |
403 | { |
404 | if (SvTYPE(sv) != SVTYPEMASK) { | |
405 | PerlIO_printf(Perl_debug_log, "****\n"); | |
406 | sv_dump(sv); | |
407 | } | |
408 | } | |
758a08c3 | 409 | #endif |
645c22ef DM |
410 | |
411 | /* | |
412 | =for apidoc sv_report_used | |
413 | ||
414 | Dump the contents of all SVs not yet freed. (Debugging aid). | |
415 | ||
416 | =cut | |
417 | */ | |
418 | ||
8990e307 | 419 | void |
864dbfa3 | 420 | Perl_sv_report_used(pTHX) |
4561caa4 | 421 | { |
ff270d3a | 422 | #ifdef DEBUGGING |
055972dc | 423 | visit(do_report_used, 0, 0); |
ff270d3a | 424 | #endif |
4561caa4 CS |
425 | } |
426 | ||
645c22ef DM |
427 | /* called by sv_clean_objs() for each live SV */ |
428 | ||
429 | static void | |
e15faf7d | 430 | do_clean_objs(pTHX_ SV *ref) |
645c22ef | 431 | { |
823a54a3 AL |
432 | if (SvROK(ref)) { |
433 | SV * const target = SvRV(ref); | |
434 | if (SvOBJECT(target)) { | |
435 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(ref))); | |
436 | if (SvWEAKREF(ref)) { | |
437 | sv_del_backref(target, ref); | |
438 | SvWEAKREF_off(ref); | |
439 | SvRV_set(ref, NULL); | |
440 | } else { | |
441 | SvROK_off(ref); | |
442 | SvRV_set(ref, NULL); | |
443 | SvREFCNT_dec(target); | |
444 | } | |
645c22ef DM |
445 | } |
446 | } | |
447 | ||
448 | /* XXX Might want to check arrays, etc. */ | |
449 | } | |
450 | ||
451 | /* called by sv_clean_objs() for each live SV */ | |
452 | ||
453 | #ifndef DISABLE_DESTRUCTOR_KLUDGE | |
454 | static void | |
acfe0abc | 455 | do_clean_named_objs(pTHX_ SV *sv) |
645c22ef DM |
456 | { |
457 | if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) { | |
c69033f2 NC |
458 | if (( |
459 | #ifdef PERL_DONT_CREATE_GVSV | |
460 | GvSV(sv) && | |
461 | #endif | |
462 | SvOBJECT(GvSV(sv))) || | |
645c22ef DM |
463 | (GvAV(sv) && SvOBJECT(GvAV(sv))) || |
464 | (GvHV(sv) && SvOBJECT(GvHV(sv))) || | |
465 | (GvIO(sv) && SvOBJECT(GvIO(sv))) || | |
466 | (GvCV(sv) && SvOBJECT(GvCV(sv))) ) | |
467 | { | |
468 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv))); | |
ec5f3c78 | 469 | SvFLAGS(sv) |= SVf_BREAK; |
645c22ef DM |
470 | SvREFCNT_dec(sv); |
471 | } | |
472 | } | |
473 | } | |
474 | #endif | |
475 | ||
476 | /* | |
477 | =for apidoc sv_clean_objs | |
478 | ||
479 | Attempt to destroy all objects not yet freed | |
480 | ||
481 | =cut | |
482 | */ | |
483 | ||
4561caa4 | 484 | void |
864dbfa3 | 485 | Perl_sv_clean_objs(pTHX) |
4561caa4 | 486 | { |
3280af22 | 487 | PL_in_clean_objs = TRUE; |
055972dc | 488 | visit(do_clean_objs, SVf_ROK, SVf_ROK); |
4561caa4 | 489 | #ifndef DISABLE_DESTRUCTOR_KLUDGE |
2d0f3c12 | 490 | /* some barnacles may yet remain, clinging to typeglobs */ |
055972dc | 491 | visit(do_clean_named_objs, SVt_PVGV, SVTYPEMASK); |
4561caa4 | 492 | #endif |
3280af22 | 493 | PL_in_clean_objs = FALSE; |
4561caa4 CS |
494 | } |
495 | ||
645c22ef DM |
496 | /* called by sv_clean_all() for each live SV */ |
497 | ||
498 | static void | |
acfe0abc | 499 | do_clean_all(pTHX_ SV *sv) |
645c22ef DM |
500 | { |
501 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) )); | |
502 | SvFLAGS(sv) |= SVf_BREAK; | |
0e705b3b DM |
503 | if (PL_comppad == (AV*)sv) { |
504 | PL_comppad = Nullav; | |
505 | PL_curpad = Null(SV**); | |
506 | } | |
645c22ef DM |
507 | SvREFCNT_dec(sv); |
508 | } | |
509 | ||
510 | /* | |
511 | =for apidoc sv_clean_all | |
512 | ||
513 | Decrement the refcnt of each remaining SV, possibly triggering a | |
514 | cleanup. This function may have to be called multiple times to free | |
ff276b08 | 515 | SVs which are in complex self-referential hierarchies. |
645c22ef DM |
516 | |
517 | =cut | |
518 | */ | |
519 | ||
5226ed68 | 520 | I32 |
864dbfa3 | 521 | Perl_sv_clean_all(pTHX) |
8990e307 | 522 | { |
5226ed68 | 523 | I32 cleaned; |
3280af22 | 524 | PL_in_clean_all = TRUE; |
055972dc | 525 | cleaned = visit(do_clean_all, 0,0); |
3280af22 | 526 | PL_in_clean_all = FALSE; |
5226ed68 | 527 | return cleaned; |
8990e307 | 528 | } |
463ee0b2 | 529 | |
7cfef17e NC |
530 | static void |
531 | S_free_arena(pTHX_ void **root) { | |
532 | while (root) { | |
1b6737cc | 533 | void ** const next = *(void **)root; |
7cfef17e NC |
534 | Safefree(root); |
535 | root = next; | |
536 | } | |
537 | } | |
538 | ||
645c22ef DM |
539 | /* |
540 | =for apidoc sv_free_arenas | |
541 | ||
542 | Deallocate the memory used by all arenas. Note that all the individual SV | |
543 | heads and bodies within the arenas must already have been freed. | |
544 | ||
545 | =cut | |
546 | */ | |
547 | ||
7cfef17e NC |
548 | #define free_arena(name) \ |
549 | STMT_START { \ | |
550 | S_free_arena(aTHX_ (void**) PL_ ## name ## _arenaroot); \ | |
551 | PL_ ## name ## _arenaroot = 0; \ | |
552 | PL_ ## name ## _root = 0; \ | |
553 | } STMT_END | |
554 | ||
4633a7c4 | 555 | void |
864dbfa3 | 556 | Perl_sv_free_arenas(pTHX) |
4633a7c4 LW |
557 | { |
558 | SV* sva; | |
559 | SV* svanext; | |
560 | ||
561 | /* Free arenas here, but be careful about fake ones. (We assume | |
562 | contiguity of the fake ones with the corresponding real ones.) */ | |
563 | ||
3280af22 | 564 | for (sva = PL_sv_arenaroot; sva; sva = svanext) { |
4633a7c4 LW |
565 | svanext = (SV*) SvANY(sva); |
566 | while (svanext && SvFAKE(svanext)) | |
567 | svanext = (SV*) SvANY(svanext); | |
568 | ||
569 | if (!SvFAKE(sva)) | |
1df70142 | 570 | Safefree(sva); |
4633a7c4 | 571 | } |
8b4f5e17 | 572 | |
7cfef17e NC |
573 | free_arena(xnv); |
574 | free_arena(xpv); | |
575 | free_arena(xpviv); | |
576 | free_arena(xpvnv); | |
577 | free_arena(xpvcv); | |
578 | free_arena(xpvav); | |
579 | free_arena(xpvhv); | |
580 | free_arena(xpvmg); | |
581 | free_arena(xpvgv); | |
582 | free_arena(xpvlv); | |
583 | free_arena(xpvbm); | |
584 | free_arena(he); | |
585 | #if defined(USE_ITHREADS) | |
586 | free_arena(pte); | |
587 | #endif | |
612f20c3 | 588 | |
43c5f42d | 589 | Safefree(PL_nice_chunk); |
3280af22 NIS |
590 | PL_nice_chunk = Nullch; |
591 | PL_nice_chunk_size = 0; | |
592 | PL_sv_arenaroot = 0; | |
593 | PL_sv_root = 0; | |
4633a7c4 LW |
594 | } |
595 | ||
29489e7c DM |
596 | /* --------------------------------------------------------------------- |
597 | * | |
598 | * support functions for report_uninit() | |
599 | */ | |
600 | ||
601 | /* the maxiumum size of array or hash where we will scan looking | |
602 | * for the undefined element that triggered the warning */ | |
603 | ||
604 | #define FUV_MAX_SEARCH_SIZE 1000 | |
605 | ||
606 | /* Look for an entry in the hash whose value has the same SV as val; | |
607 | * If so, return a mortal copy of the key. */ | |
608 | ||
609 | STATIC SV* | |
610 | S_find_hash_subscript(pTHX_ HV *hv, SV* val) | |
611 | { | |
27da23d5 | 612 | dVAR; |
29489e7c | 613 | register HE **array; |
29489e7c DM |
614 | I32 i; |
615 | ||
616 | if (!hv || SvMAGICAL(hv) || !HvARRAY(hv) || | |
617 | (HvTOTALKEYS(hv) > FUV_MAX_SEARCH_SIZE)) | |
618 | return Nullsv; | |
619 | ||
620 | array = HvARRAY(hv); | |
621 | ||
622 | for (i=HvMAX(hv); i>0; i--) { | |
f54cb97a | 623 | register HE *entry; |
29489e7c DM |
624 | for (entry = array[i]; entry; entry = HeNEXT(entry)) { |
625 | if (HeVAL(entry) != val) | |
626 | continue; | |
627 | if ( HeVAL(entry) == &PL_sv_undef || | |
628 | HeVAL(entry) == &PL_sv_placeholder) | |
629 | continue; | |
630 | if (!HeKEY(entry)) | |
631 | return Nullsv; | |
632 | if (HeKLEN(entry) == HEf_SVKEY) | |
633 | return sv_mortalcopy(HeKEY_sv(entry)); | |
634 | return sv_2mortal(newSVpvn(HeKEY(entry), HeKLEN(entry))); | |
635 | } | |
636 | } | |
637 | return Nullsv; | |
638 | } | |
639 | ||
640 | /* Look for an entry in the array whose value has the same SV as val; | |
641 | * If so, return the index, otherwise return -1. */ | |
642 | ||
643 | STATIC I32 | |
644 | S_find_array_subscript(pTHX_ AV *av, SV* val) | |
645 | { | |
646 | SV** svp; | |
647 | I32 i; | |
648 | if (!av || SvMAGICAL(av) || !AvARRAY(av) || | |
649 | (AvFILLp(av) > FUV_MAX_SEARCH_SIZE)) | |
650 | return -1; | |
651 | ||
652 | svp = AvARRAY(av); | |
653 | for (i=AvFILLp(av); i>=0; i--) { | |
654 | if (svp[i] == val && svp[i] != &PL_sv_undef) | |
655 | return i; | |
656 | } | |
657 | return -1; | |
658 | } | |
659 | ||
660 | /* S_varname(): return the name of a variable, optionally with a subscript. | |
661 | * If gv is non-zero, use the name of that global, along with gvtype (one | |
662 | * of "$", "@", "%"); otherwise use the name of the lexical at pad offset | |
663 | * targ. Depending on the value of the subscript_type flag, return: | |
664 | */ | |
665 | ||
666 | #define FUV_SUBSCRIPT_NONE 1 /* "@foo" */ | |
667 | #define FUV_SUBSCRIPT_ARRAY 2 /* "$foo[aindex]" */ | |
668 | #define FUV_SUBSCRIPT_HASH 3 /* "$foo{keyname}" */ | |
669 | #define FUV_SUBSCRIPT_WITHIN 4 /* "within @foo" */ | |
670 | ||
671 | STATIC SV* | |
be2ef075 | 672 | S_varname(pTHX_ GV *gv, const char gvtype, PADOFFSET targ, |
29489e7c DM |
673 | SV* keyname, I32 aindex, int subscript_type) |
674 | { | |
29489e7c | 675 | |
a3b680e6 | 676 | SV * const name = sv_newmortal(); |
29489e7c | 677 | if (gv) { |
9393da09 NC |
678 | char buffer[2]; |
679 | buffer[0] = gvtype; | |
680 | buffer[1] = 0; | |
29489e7c | 681 | |
9393da09 NC |
682 | /* as gv_fullname4(), but add literal '^' for $^FOO names */ |
683 | ||
684 | gv_fullname4(name, gv, buffer, 0); | |
685 | ||
686 | if ((unsigned int)SvPVX(name)[1] <= 26) { | |
687 | buffer[0] = '^'; | |
688 | buffer[1] = SvPVX(name)[1] + 'A' - 1; | |
689 | ||
690 | /* Swap the 1 unprintable control character for the 2 byte pretty | |
691 | version - ie substr($name, 1, 1) = $buffer; */ | |
692 | sv_insert(name, 1, 1, buffer, 2); | |
29489e7c | 693 | } |
29489e7c DM |
694 | } |
695 | else { | |
53c1dcc0 AL |
696 | U32 unused; |
697 | CV * const cv = find_runcv(&unused); | |
698 | SV *sv; | |
699 | AV *av; | |
700 | ||
29489e7c | 701 | if (!cv || !CvPADLIST(cv)) |
1b6737cc | 702 | return Nullsv; |
29489e7c DM |
703 | av = (AV*)(*av_fetch(CvPADLIST(cv), 0, FALSE)); |
704 | sv = *av_fetch(av, targ, FALSE); | |
705 | /* SvLEN in a pad name is not to be trusted */ | |
f9926b10 | 706 | sv_setpv(name, SvPV_nolen_const(sv)); |
29489e7c DM |
707 | } |
708 | ||
709 | if (subscript_type == FUV_SUBSCRIPT_HASH) { | |
1b6737cc | 710 | SV * const sv = NEWSV(0,0); |
29489e7c | 711 | *SvPVX(name) = '$'; |
29489e7c | 712 | Perl_sv_catpvf(aTHX_ name, "{%s}", |
3f7c398e | 713 | pv_display(sv,SvPVX_const(keyname), SvCUR(keyname), 0, 32)); |
29489e7c DM |
714 | SvREFCNT_dec(sv); |
715 | } | |
716 | else if (subscript_type == FUV_SUBSCRIPT_ARRAY) { | |
717 | *SvPVX(name) = '$'; | |
265a12b8 | 718 | Perl_sv_catpvf(aTHX_ name, "[%"IVdf"]", (IV)aindex); |
29489e7c DM |
719 | } |
720 | else if (subscript_type == FUV_SUBSCRIPT_WITHIN) | |
721 | sv_insert(name, 0, 0, "within ", 7); | |
722 | ||
723 | return name; | |
724 | } | |
725 | ||
726 | ||
727 | /* | |
728 | =for apidoc find_uninit_var | |
729 | ||
730 | Find the name of the undefined variable (if any) that caused the operator o | |
731 | to issue a "Use of uninitialized value" warning. | |
732 | If match is true, only return a name if it's value matches uninit_sv. | |
733 | So roughly speaking, if a unary operator (such as OP_COS) generates a | |
734 | warning, then following the direct child of the op may yield an | |
735 | OP_PADSV or OP_GV that gives the name of the undefined variable. On the | |
736 | other hand, with OP_ADD there are two branches to follow, so we only print | |
737 | the variable name if we get an exact match. | |
738 | ||
739 | The name is returned as a mortal SV. | |
740 | ||
741 | Assumes that PL_op is the op that originally triggered the error, and that | |
742 | PL_comppad/PL_curpad points to the currently executing pad. | |
743 | ||
744 | =cut | |
745 | */ | |
746 | ||
747 | STATIC SV * | |
748 | S_find_uninit_var(pTHX_ OP* obase, SV* uninit_sv, bool match) | |
749 | { | |
27da23d5 | 750 | dVAR; |
29489e7c DM |
751 | SV *sv; |
752 | AV *av; | |
29489e7c DM |
753 | GV *gv; |
754 | OP *o, *o2, *kid; | |
755 | ||
756 | if (!obase || (match && (!uninit_sv || uninit_sv == &PL_sv_undef || | |
757 | uninit_sv == &PL_sv_placeholder))) | |
758 | return Nullsv; | |
759 | ||
760 | switch (obase->op_type) { | |
761 | ||
762 | case OP_RV2AV: | |
763 | case OP_RV2HV: | |
764 | case OP_PADAV: | |
765 | case OP_PADHV: | |
766 | { | |
f54cb97a AL |
767 | const bool pad = (obase->op_type == OP_PADAV || obase->op_type == OP_PADHV); |
768 | const bool hash = (obase->op_type == OP_PADHV || obase->op_type == OP_RV2HV); | |
112dcc46 RGS |
769 | I32 index = 0; |
770 | SV *keysv = Nullsv; | |
29489e7c DM |
771 | int subscript_type = FUV_SUBSCRIPT_WITHIN; |
772 | ||
773 | if (pad) { /* @lex, %lex */ | |
774 | sv = PAD_SVl(obase->op_targ); | |
775 | gv = Nullgv; | |
776 | } | |
777 | else { | |
778 | if (cUNOPx(obase)->op_first->op_type == OP_GV) { | |
779 | /* @global, %global */ | |
780 | gv = cGVOPx_gv(cUNOPx(obase)->op_first); | |
781 | if (!gv) | |
782 | break; | |
783 | sv = hash ? (SV*)GvHV(gv): (SV*)GvAV(gv); | |
784 | } | |
785 | else /* @{expr}, %{expr} */ | |
786 | return find_uninit_var(cUNOPx(obase)->op_first, | |
787 | uninit_sv, match); | |
788 | } | |
789 | ||
790 | /* attempt to find a match within the aggregate */ | |
791 | if (hash) { | |
792 | keysv = S_find_hash_subscript(aTHX_ (HV*)sv, uninit_sv); | |
793 | if (keysv) | |
794 | subscript_type = FUV_SUBSCRIPT_HASH; | |
795 | } | |
796 | else { | |
797 | index = S_find_array_subscript(aTHX_ (AV*)sv, uninit_sv); | |
798 | if (index >= 0) | |
799 | subscript_type = FUV_SUBSCRIPT_ARRAY; | |
800 | } | |
801 | ||
802 | if (match && subscript_type == FUV_SUBSCRIPT_WITHIN) | |
803 | break; | |
804 | ||
be2ef075 | 805 | return varname(gv, hash ? '%' : '@', obase->op_targ, |
29489e7c DM |
806 | keysv, index, subscript_type); |
807 | } | |
808 | ||
809 | case OP_PADSV: | |
810 | if (match && PAD_SVl(obase->op_targ) != uninit_sv) | |
811 | break; | |
be2ef075 | 812 | return varname(Nullgv, '$', obase->op_targ, |
29489e7c DM |
813 | Nullsv, 0, FUV_SUBSCRIPT_NONE); |
814 | ||
815 | case OP_GVSV: | |
816 | gv = cGVOPx_gv(obase); | |
817 | if (!gv || (match && GvSV(gv) != uninit_sv)) | |
818 | break; | |
be2ef075 | 819 | return varname(gv, '$', 0, Nullsv, 0, FUV_SUBSCRIPT_NONE); |
29489e7c DM |
820 | |
821 | case OP_AELEMFAST: | |
822 | if (obase->op_flags & OPf_SPECIAL) { /* lexical array */ | |
823 | if (match) { | |
1b6737cc | 824 | SV **svp; |
29489e7c DM |
825 | av = (AV*)PAD_SV(obase->op_targ); |
826 | if (!av || SvRMAGICAL(av)) | |
827 | break; | |
828 | svp = av_fetch(av, (I32)obase->op_private, FALSE); | |
829 | if (!svp || *svp != uninit_sv) | |
830 | break; | |
831 | } | |
be2ef075 | 832 | return varname(Nullgv, '$', obase->op_targ, |
29489e7c DM |
833 | Nullsv, (I32)obase->op_private, FUV_SUBSCRIPT_ARRAY); |
834 | } | |
835 | else { | |
836 | gv = cGVOPx_gv(obase); | |
837 | if (!gv) | |
838 | break; | |
839 | if (match) { | |
1b6737cc | 840 | SV **svp; |
29489e7c DM |
841 | av = GvAV(gv); |
842 | if (!av || SvRMAGICAL(av)) | |
843 | break; | |
844 | svp = av_fetch(av, (I32)obase->op_private, FALSE); | |
845 | if (!svp || *svp != uninit_sv) | |
846 | break; | |
847 | } | |
be2ef075 | 848 | return varname(gv, '$', 0, |
29489e7c DM |
849 | Nullsv, (I32)obase->op_private, FUV_SUBSCRIPT_ARRAY); |
850 | } | |
851 | break; | |
852 | ||
853 | case OP_EXISTS: | |
854 | o = cUNOPx(obase)->op_first; | |
855 | if (!o || o->op_type != OP_NULL || | |
856 | ! (o->op_targ == OP_AELEM || o->op_targ == OP_HELEM)) | |
857 | break; | |
858 | return find_uninit_var(cBINOPo->op_last, uninit_sv, match); | |
859 | ||
860 | case OP_AELEM: | |
861 | case OP_HELEM: | |
862 | if (PL_op == obase) | |
863 | /* $a[uninit_expr] or $h{uninit_expr} */ | |
864 | return find_uninit_var(cBINOPx(obase)->op_last, uninit_sv, match); | |
865 | ||
866 | gv = Nullgv; | |
867 | o = cBINOPx(obase)->op_first; | |
868 | kid = cBINOPx(obase)->op_last; | |
869 | ||
870 | /* get the av or hv, and optionally the gv */ | |
871 | sv = Nullsv; | |
872 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) { | |
873 | sv = PAD_SV(o->op_targ); | |
874 | } | |
875 | else if ((o->op_type == OP_RV2AV || o->op_type == OP_RV2HV) | |
876 | && cUNOPo->op_first->op_type == OP_GV) | |
877 | { | |
878 | gv = cGVOPx_gv(cUNOPo->op_first); | |
879 | if (!gv) | |
880 | break; | |
881 | sv = o->op_type == OP_RV2HV ? (SV*)GvHV(gv) : (SV*)GvAV(gv); | |
882 | } | |
883 | if (!sv) | |
884 | break; | |
885 | ||
886 | if (kid && kid->op_type == OP_CONST && SvOK(cSVOPx_sv(kid))) { | |
887 | /* index is constant */ | |
888 | if (match) { | |
889 | if (SvMAGICAL(sv)) | |
890 | break; | |
891 | if (obase->op_type == OP_HELEM) { | |
892 | HE* he = hv_fetch_ent((HV*)sv, cSVOPx_sv(kid), 0, 0); | |
893 | if (!he || HeVAL(he) != uninit_sv) | |
894 | break; | |
895 | } | |
896 | else { | |
1b6737cc | 897 | SV ** const svp = av_fetch((AV*)sv, SvIV(cSVOPx_sv(kid)), FALSE); |
29489e7c DM |
898 | if (!svp || *svp != uninit_sv) |
899 | break; | |
900 | } | |
901 | } | |
902 | if (obase->op_type == OP_HELEM) | |
be2ef075 | 903 | return varname(gv, '%', o->op_targ, |
29489e7c DM |
904 | cSVOPx_sv(kid), 0, FUV_SUBSCRIPT_HASH); |
905 | else | |
be2ef075 | 906 | return varname(gv, '@', o->op_targ, Nullsv, |
29489e7c DM |
907 | SvIV(cSVOPx_sv(kid)), FUV_SUBSCRIPT_ARRAY); |
908 | ; | |
909 | } | |
910 | else { | |
911 | /* index is an expression; | |
912 | * attempt to find a match within the aggregate */ | |
913 | if (obase->op_type == OP_HELEM) { | |
53c1dcc0 | 914 | SV * const keysv = S_find_hash_subscript(aTHX_ (HV*)sv, uninit_sv); |
29489e7c | 915 | if (keysv) |
be2ef075 | 916 | return varname(gv, '%', o->op_targ, |
29489e7c DM |
917 | keysv, 0, FUV_SUBSCRIPT_HASH); |
918 | } | |
919 | else { | |
f54cb97a | 920 | const I32 index = S_find_array_subscript(aTHX_ (AV*)sv, uninit_sv); |
29489e7c | 921 | if (index >= 0) |
be2ef075 | 922 | return varname(gv, '@', o->op_targ, |
29489e7c DM |
923 | Nullsv, index, FUV_SUBSCRIPT_ARRAY); |
924 | } | |
925 | if (match) | |
926 | break; | |
1b6737cc | 927 | return varname(gv, |
29489e7c | 928 | (o->op_type == OP_PADAV || o->op_type == OP_RV2AV) |
be2ef075 | 929 | ? '@' : '%', |
29489e7c DM |
930 | o->op_targ, Nullsv, 0, FUV_SUBSCRIPT_WITHIN); |
931 | } | |
932 | ||
933 | break; | |
934 | ||
935 | case OP_AASSIGN: | |
936 | /* only examine RHS */ | |
937 | return find_uninit_var(cBINOPx(obase)->op_first, uninit_sv, match); | |
938 | ||
939 | case OP_OPEN: | |
940 | o = cUNOPx(obase)->op_first; | |
941 | if (o->op_type == OP_PUSHMARK) | |
942 | o = o->op_sibling; | |
943 | ||
944 | if (!o->op_sibling) { | |
945 | /* one-arg version of open is highly magical */ | |
946 | ||
947 | if (o->op_type == OP_GV) { /* open FOO; */ | |
948 | gv = cGVOPx_gv(o); | |
949 | if (match && GvSV(gv) != uninit_sv) | |
950 | break; | |
be2ef075 | 951 | return varname(gv, '$', 0, |
29489e7c DM |
952 | Nullsv, 0, FUV_SUBSCRIPT_NONE); |
953 | } | |
954 | /* other possibilities not handled are: | |
955 | * open $x; or open my $x; should return '${*$x}' | |
956 | * open expr; should return '$'.expr ideally | |
957 | */ | |
958 | break; | |
959 | } | |
960 | goto do_op; | |
961 | ||
962 | /* ops where $_ may be an implicit arg */ | |
963 | case OP_TRANS: | |
964 | case OP_SUBST: | |
965 | case OP_MATCH: | |
966 | if ( !(obase->op_flags & OPf_STACKED)) { | |
967 | if (uninit_sv == ((obase->op_private & OPpTARGET_MY) | |
968 | ? PAD_SVl(obase->op_targ) | |
969 | : DEFSV)) | |
970 | { | |
971 | sv = sv_newmortal(); | |
616d8c9c | 972 | sv_setpvn(sv, "$_", 2); |
29489e7c DM |
973 | return sv; |
974 | } | |
975 | } | |
976 | goto do_op; | |
977 | ||
978 | case OP_PRTF: | |
979 | case OP_PRINT: | |
980 | /* skip filehandle as it can't produce 'undef' warning */ | |
981 | o = cUNOPx(obase)->op_first; | |
982 | if ((obase->op_flags & OPf_STACKED) && o->op_type == OP_PUSHMARK) | |
983 | o = o->op_sibling->op_sibling; | |
984 | goto do_op2; | |
985 | ||
986 | ||
e21bd382 | 987 | case OP_RV2SV: |
29489e7c DM |
988 | case OP_CUSTOM: |
989 | case OP_ENTERSUB: | |
990 | match = 1; /* XS or custom code could trigger random warnings */ | |
991 | goto do_op; | |
992 | ||
993 | case OP_SCHOMP: | |
994 | case OP_CHOMP: | |
995 | if (SvROK(PL_rs) && uninit_sv == SvRV(PL_rs)) | |
d0043bd1 | 996 | return sv_2mortal(newSVpvn("${$/}", 5)); |
29489e7c DM |
997 | /* FALL THROUGH */ |
998 | ||
999 | default: | |
1000 | do_op: | |
1001 | if (!(obase->op_flags & OPf_KIDS)) | |
1002 | break; | |
1003 | o = cUNOPx(obase)->op_first; | |
1004 | ||
1005 | do_op2: | |
1006 | if (!o) | |
1007 | break; | |
1008 | ||
1009 | /* if all except one arg are constant, or have no side-effects, | |
1010 | * or are optimized away, then it's unambiguous */ | |
1011 | o2 = Nullop; | |
1012 | for (kid=o; kid; kid = kid->op_sibling) { | |
1013 | if (kid && | |
1014 | ( (kid->op_type == OP_CONST && SvOK(cSVOPx_sv(kid))) | |
1015 | || (kid->op_type == OP_NULL && ! (kid->op_flags & OPf_KIDS)) | |
1016 | || (kid->op_type == OP_PUSHMARK) | |
1017 | ) | |
1018 | ) | |
1019 | continue; | |
1020 | if (o2) { /* more than one found */ | |
1021 | o2 = Nullop; | |
1022 | break; | |
1023 | } | |
1024 | o2 = kid; | |
1025 | } | |
1026 | if (o2) | |
1027 | return find_uninit_var(o2, uninit_sv, match); | |
1028 | ||
1029 | /* scan all args */ | |
1030 | while (o) { | |
1031 | sv = find_uninit_var(o, uninit_sv, 1); | |
1032 | if (sv) | |
1033 | return sv; | |
1034 | o = o->op_sibling; | |
1035 | } | |
1036 | break; | |
1037 | } | |
1038 | return Nullsv; | |
1039 | } | |
1040 | ||
1041 | ||
645c22ef DM |
1042 | /* |
1043 | =for apidoc report_uninit | |
1044 | ||
1045 | Print appropriate "Use of uninitialized variable" warning | |
1046 | ||
1047 | =cut | |
1048 | */ | |
1049 | ||
1d7c1841 | 1050 | void |
29489e7c DM |
1051 | Perl_report_uninit(pTHX_ SV* uninit_sv) |
1052 | { | |
1053 | if (PL_op) { | |
112dcc46 | 1054 | SV* varname = Nullsv; |
29489e7c DM |
1055 | if (uninit_sv) { |
1056 | varname = find_uninit_var(PL_op, uninit_sv,0); | |
1057 | if (varname) | |
1058 | sv_insert(varname, 0, 0, " ", 1); | |
1059 | } | |
9014280d | 1060 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, |
93524f2b | 1061 | varname ? SvPV_nolen_const(varname) : "", |
29489e7c DM |
1062 | " in ", OP_DESC(PL_op)); |
1063 | } | |
1d7c1841 | 1064 | else |
29489e7c DM |
1065 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, |
1066 | "", "", ""); | |
1d7c1841 GS |
1067 | } |
1068 | ||
de042e1d | 1069 | STATIC void * |
e3bbdc67 | 1070 | S_more_bodies (pTHX_ void **arena_root, void **root, size_t size) |
cac9b346 | 1071 | { |
e3bbdc67 NC |
1072 | char *start; |
1073 | const char *end; | |
53c1dcc0 | 1074 | const size_t count = PERL_ARENA_SIZE/size; |
a02a5408 | 1075 | Newx(start, count*size, char); |
e3bbdc67 NC |
1076 | *((void **) start) = *arena_root; |
1077 | *arena_root = (void *)start; | |
cac9b346 | 1078 | |
e3bbdc67 | 1079 | end = start + (count-1) * size; |
cac9b346 | 1080 | |
e3bbdc67 NC |
1081 | /* The initial slot is used to link the arenas together, so it isn't to be |
1082 | linked into the list of ready-to-use bodies. */ | |
cac9b346 | 1083 | |
e3bbdc67 | 1084 | start += size; |
cac9b346 | 1085 | |
e3bbdc67 | 1086 | *root = (void *)start; |
cac9b346 | 1087 | |
e3bbdc67 | 1088 | while (start < end) { |
53c1dcc0 | 1089 | char * const next = start + size; |
e3bbdc67 NC |
1090 | *(void**) start = (void *)next; |
1091 | start = next; | |
cac9b346 | 1092 | } |
e3bbdc67 | 1093 | *(void **)start = 0; |
de042e1d NC |
1094 | |
1095 | return *root; | |
cac9b346 NC |
1096 | } |
1097 | ||
aeb18a1e | 1098 | /* grab a new thing from the free list, allocating more if necessary */ |
645c22ef | 1099 | |
30f9da9e | 1100 | /* 1st, the inline version */ |
08742458 NC |
1101 | |
1102 | #define new_body_inline(xpv, arena_root, root, size) \ | |
1103 | STMT_START { \ | |
1104 | LOCK_SV_MUTEX; \ | |
1105 | xpv = *((void **)(root)) \ | |
1106 | ? *((void **)(root)) : S_more_bodies(aTHX_ arena_root, root, size); \ | |
1107 | *(root) = *(void**)(xpv); \ | |
1108 | UNLOCK_SV_MUTEX; \ | |
1109 | } STMT_END | |
1110 | ||
30f9da9e JC |
1111 | /* now use the inline version in the proper function */ |
1112 | ||
1113 | STATIC void * | |
1114 | S_new_body(pTHX_ void **arena_root, void **root, size_t size) | |
1115 | { | |
1116 | void *xpv; | |
1117 | new_body_inline(xpv, arena_root, root, size); | |
1118 | return xpv; | |
1119 | } | |
1120 | ||
aeb18a1e | 1121 | /* return a thing to the free list */ |
645c22ef | 1122 | |
cb4415b8 NC |
1123 | #define del_body(thing, root) \ |
1124 | STMT_START { \ | |
49c04cc7 | 1125 | void **thing_copy = (void **)thing; \ |
cb4415b8 | 1126 | LOCK_SV_MUTEX; \ |
49c04cc7 NC |
1127 | *thing_copy = *root; \ |
1128 | *root = (void*)thing_copy; \ | |
cb4415b8 NC |
1129 | UNLOCK_SV_MUTEX; \ |
1130 | } STMT_END | |
932e9ff9 | 1131 | |
aeb18a1e NC |
1132 | /* Conventionally we simply malloc() a big block of memory, then divide it |
1133 | up into lots of the thing that we're allocating. | |
645c22ef | 1134 | |
aeb18a1e NC |
1135 | This macro will expand to call to S_new_body. So for XPVBM (with ithreads), |
1136 | it would become | |
932e9ff9 | 1137 | |
aeb18a1e NC |
1138 | S_new_body(my_perl, (void**)&(my_perl->Ixpvbm_arenaroot), |
1139 | (void**)&(my_perl->Ixpvbm_root), sizeof(XPVBM), 0) | |
1140 | */ | |
645c22ef | 1141 | |
08742458 | 1142 | #define new_body_type(TYPE,lctype) \ |
aeb18a1e NC |
1143 | S_new_body(aTHX_ (void**)&PL_ ## lctype ## _arenaroot, \ |
1144 | (void**)&PL_ ## lctype ## _root, \ | |
dd690478 NC |
1145 | sizeof(TYPE)) |
1146 | ||
cb4415b8 NC |
1147 | #define del_body_type(p,TYPE,lctype) \ |
1148 | del_body((void*)p, (void**)&PL_ ## lctype ## _root) | |
aeb18a1e NC |
1149 | |
1150 | /* But for some types, we cheat. The type starts with some members that are | |
1151 | never accessed. So we allocate the substructure, starting at the first used | |
1152 | member, then adjust the pointer back in memory by the size of the bit not | |
1153 | allocated, so it's as if we allocated the full structure. | |
1154 | (But things will all go boom if you write to the part that is "not there", | |
1155 | because you'll be overwriting the last members of the preceding structure | |
1156 | in memory.) | |
1157 | ||
1158 | We calculate the correction using the STRUCT_OFFSET macro. For example, if | |
1159 | xpv_allocated is the same structure as XPV then the two OFFSETs sum to zero, | |
1160 | and the pointer is unchanged. If the allocated structure is smaller (no | |
1161 | initial NV actually allocated) then the net effect is to subtract the size | |
1162 | of the NV from the pointer, to return a new pointer as if an initial NV were | |
1163 | actually allocated. | |
1164 | ||
1165 | This is the same trick as was used for NV and IV bodies. Ironically it | |
1166 | doesn't need to be used for NV bodies any more, because NV is now at the | |
1167 | start of the structure. IV bodies don't need it either, because they are | |
1168 | no longer allocated. */ | |
1169 | ||
1170 | #define new_body_allocated(TYPE,lctype,member) \ | |
dd690478 NC |
1171 | (void*)((char*)S_new_body(aTHX_ (void**)&PL_ ## lctype ## _arenaroot, \ |
1172 | (void**)&PL_ ## lctype ## _root, \ | |
1173 | sizeof(lctype ## _allocated)) - \ | |
1174 | STRUCT_OFFSET(TYPE, member) \ | |
1175 | + STRUCT_OFFSET(lctype ## _allocated, member)) | |
aeb18a1e NC |
1176 | |
1177 | ||
aeb18a1e | 1178 | #define del_body_allocated(p,TYPE,lctype,member) \ |
cb4415b8 NC |
1179 | del_body((void*)((char*)p + STRUCT_OFFSET(TYPE, member) \ |
1180 | - STRUCT_OFFSET(lctype ## _allocated, member)), \ | |
1181 | (void**)&PL_ ## lctype ## _root) | |
932e9ff9 | 1182 | |
7bab3ede MB |
1183 | #define my_safemalloc(s) (void*)safemalloc(s) |
1184 | #define my_safefree(p) safefree((char*)p) | |
463ee0b2 | 1185 | |
d33b2eba | 1186 | #ifdef PURIFY |
463ee0b2 | 1187 | |
d33b2eba GS |
1188 | #define new_XNV() my_safemalloc(sizeof(XPVNV)) |
1189 | #define del_XNV(p) my_safefree(p) | |
463ee0b2 | 1190 | |
d33b2eba GS |
1191 | #define new_XPV() my_safemalloc(sizeof(XPV)) |
1192 | #define del_XPV(p) my_safefree(p) | |
9b94d1dd | 1193 | |
d33b2eba GS |
1194 | #define new_XPVIV() my_safemalloc(sizeof(XPVIV)) |
1195 | #define del_XPVIV(p) my_safefree(p) | |
932e9ff9 | 1196 | |
d33b2eba GS |
1197 | #define new_XPVNV() my_safemalloc(sizeof(XPVNV)) |
1198 | #define del_XPVNV(p) my_safefree(p) | |
932e9ff9 | 1199 | |
d33b2eba GS |
1200 | #define new_XPVCV() my_safemalloc(sizeof(XPVCV)) |
1201 | #define del_XPVCV(p) my_safefree(p) | |
932e9ff9 | 1202 | |
d33b2eba GS |
1203 | #define new_XPVAV() my_safemalloc(sizeof(XPVAV)) |
1204 | #define del_XPVAV(p) my_safefree(p) | |
1205 | ||
1206 | #define new_XPVHV() my_safemalloc(sizeof(XPVHV)) | |
1207 | #define del_XPVHV(p) my_safefree(p) | |
1c846c1f | 1208 | |
d33b2eba GS |
1209 | #define new_XPVMG() my_safemalloc(sizeof(XPVMG)) |
1210 | #define del_XPVMG(p) my_safefree(p) | |
1211 | ||
727879eb NC |
1212 | #define new_XPVGV() my_safemalloc(sizeof(XPVGV)) |
1213 | #define del_XPVGV(p) my_safefree(p) | |
1214 | ||
d33b2eba GS |
1215 | #define new_XPVLV() my_safemalloc(sizeof(XPVLV)) |
1216 | #define del_XPVLV(p) my_safefree(p) | |
1217 | ||
1218 | #define new_XPVBM() my_safemalloc(sizeof(XPVBM)) | |
1219 | #define del_XPVBM(p) my_safefree(p) | |
1220 | ||
1221 | #else /* !PURIFY */ | |
1222 | ||
08742458 | 1223 | #define new_XNV() new_body_type(NV, xnv) |
cb4415b8 | 1224 | #define del_XNV(p) del_body_type(p, NV, xnv) |
9b94d1dd | 1225 | |
aeb18a1e NC |
1226 | #define new_XPV() new_body_allocated(XPV, xpv, xpv_cur) |
1227 | #define del_XPV(p) del_body_allocated(p, XPV, xpv, xpv_cur) | |
d33b2eba | 1228 | |
aeb18a1e NC |
1229 | #define new_XPVIV() new_body_allocated(XPVIV, xpviv, xpv_cur) |
1230 | #define del_XPVIV(p) del_body_allocated(p, XPVIV, xpviv, xpv_cur) | |
d33b2eba | 1231 | |
08742458 | 1232 | #define new_XPVNV() new_body_type(XPVNV, xpvnv) |
cb4415b8 | 1233 | #define del_XPVNV(p) del_body_type(p, XPVNV, xpvnv) |
d33b2eba | 1234 | |
08742458 | 1235 | #define new_XPVCV() new_body_type(XPVCV, xpvcv) |
cb4415b8 | 1236 | #define del_XPVCV(p) del_body_type(p, XPVCV, xpvcv) |
d33b2eba | 1237 | |
aeb18a1e NC |
1238 | #define new_XPVAV() new_body_allocated(XPVAV, xpvav, xav_fill) |
1239 | #define del_XPVAV(p) del_body_allocated(p, XPVAV, xpvav, xav_fill) | |
d33b2eba | 1240 | |
aeb18a1e NC |
1241 | #define new_XPVHV() new_body_allocated(XPVHV, xpvhv, xhv_fill) |
1242 | #define del_XPVHV(p) del_body_allocated(p, XPVHV, xpvhv, xhv_fill) | |
1c846c1f | 1243 | |
08742458 | 1244 | #define new_XPVMG() new_body_type(XPVMG, xpvmg) |
cb4415b8 | 1245 | #define del_XPVMG(p) del_body_type(p, XPVMG, xpvmg) |
d33b2eba | 1246 | |
08742458 | 1247 | #define new_XPVGV() new_body_type(XPVGV, xpvgv) |
cb4415b8 | 1248 | #define del_XPVGV(p) del_body_type(p, XPVGV, xpvgv) |
727879eb | 1249 | |
08742458 | 1250 | #define new_XPVLV() new_body_type(XPVLV, xpvlv) |
cb4415b8 | 1251 | #define del_XPVLV(p) del_body_type(p, XPVLV, xpvlv) |
d33b2eba | 1252 | |
08742458 | 1253 | #define new_XPVBM() new_body_type(XPVBM, xpvbm) |
cb4415b8 | 1254 | #define del_XPVBM(p) del_body_type(p, XPVBM, xpvbm) |
d33b2eba GS |
1255 | |
1256 | #endif /* PURIFY */ | |
9b94d1dd | 1257 | |
d33b2eba GS |
1258 | #define new_XPVFM() my_safemalloc(sizeof(XPVFM)) |
1259 | #define del_XPVFM(p) my_safefree(p) | |
1c846c1f | 1260 | |
d33b2eba GS |
1261 | #define new_XPVIO() my_safemalloc(sizeof(XPVIO)) |
1262 | #define del_XPVIO(p) my_safefree(p) | |
8990e307 | 1263 | |
954c1994 GS |
1264 | /* |
1265 | =for apidoc sv_upgrade | |
1266 | ||
ff276b08 | 1267 | Upgrade an SV to a more complex form. Generally adds a new body type to the |
645c22ef | 1268 | SV, then copies across as much information as possible from the old body. |
ff276b08 | 1269 | You generally want to use the C<SvUPGRADE> macro wrapper. See also C<svtype>. |
954c1994 GS |
1270 | |
1271 | =cut | |
1272 | */ | |
1273 | ||
63f97190 | 1274 | void |
864dbfa3 | 1275 | Perl_sv_upgrade(pTHX_ register SV *sv, U32 mt) |
79072805 | 1276 | { |
9a085840 | 1277 | void** old_body_arena; |
878cc751 | 1278 | size_t old_body_offset; |
4cbc76b1 | 1279 | size_t old_body_length; /* Well, the length to copy. */ |
878cc751 | 1280 | void* old_body; |
16b305e3 NC |
1281 | #ifndef NV_ZERO_IS_ALLBITS_ZERO |
1282 | /* If NV 0.0 is store as all bits 0 then Zero() already creates a correct | |
1283 | 0.0 for us. */ | |
4cbc76b1 | 1284 | bool zero_nv = TRUE; |
16b305e3 | 1285 | #endif |
403d36eb NC |
1286 | void* new_body; |
1287 | size_t new_body_length; | |
1288 | size_t new_body_offset; | |
1289 | void** new_body_arena; | |
1290 | void** new_body_arenaroot; | |
53c1dcc0 | 1291 | const U32 old_type = SvTYPE(sv); |
79072805 | 1292 | |
765f542d NC |
1293 | if (mt != SVt_PV && SvIsCOW(sv)) { |
1294 | sv_force_normal_flags(sv, 0); | |
f130fd45 NIS |
1295 | } |
1296 | ||
79072805 | 1297 | if (SvTYPE(sv) == mt) |
63f97190 | 1298 | return; |
79072805 | 1299 | |
f5282e15 | 1300 | if (SvTYPE(sv) > mt) |
921edb34 RGS |
1301 | Perl_croak(aTHX_ "sv_upgrade from type %d down to type %d", |
1302 | (int)SvTYPE(sv), (int)mt); | |
f5282e15 | 1303 | |
d2e56290 | 1304 | |
878cc751 NC |
1305 | old_body = SvANY(sv); |
1306 | old_body_arena = 0; | |
1307 | old_body_offset = 0; | |
4cbc76b1 | 1308 | old_body_length = 0; |
403d36eb NC |
1309 | new_body_offset = 0; |
1310 | new_body_length = ~0; | |
1311 | ||
1312 | /* Copying structures onto other structures that have been neatly zeroed | |
1313 | has a subtle gotcha. Consider XPVMG | |
1314 | ||
1315 | +------+------+------+------+------+-------+-------+ | |
1316 | | NV | CUR | LEN | IV | MAGIC | STASH | | |
1317 | +------+------+------+------+------+-------+-------+ | |
1318 | 0 4 8 12 16 20 24 28 | |
1319 | ||
1320 | where NVs are aligned to 8 bytes, so that sizeof that structure is | |
1321 | actually 32 bytes long, with 4 bytes of padding at the end: | |
1322 | ||
1323 | +------+------+------+------+------+-------+-------+------+ | |
1324 | | NV | CUR | LEN | IV | MAGIC | STASH | ??? | | |
1325 | +------+------+------+------+------+-------+-------+------+ | |
1326 | 0 4 8 12 16 20 24 28 32 | |
1327 | ||
1328 | so what happens if you allocate memory for this structure: | |
1329 | ||
1330 | +------+------+------+------+------+-------+-------+------+------+... | |
1331 | | NV | CUR | LEN | IV | MAGIC | STASH | GP | NAME | | |
1332 | +------+------+------+------+------+-------+-------+------+------+... | |
1333 | 0 4 8 12 16 20 24 28 32 36 | |
1334 | ||
1335 | zero it, then copy sizeof(XPVMG) bytes on top of it? Not quite what you | |
1336 | expect, because you copy the area marked ??? onto GP. Now, ??? may have | |
1337 | started out as zero once, but it's quite possible that it isn't. So now, | |
1338 | rather than a nicely zeroed GP, you have it pointing somewhere random. | |
1339 | Bugs ensue. | |
1340 | ||
1341 | (In fact, GP ends up pointing at a previous GP structure, because the | |
1342 | principle cause of the padding in XPVMG getting garbage is a copy of | |
1343 | sizeof(XPVMG) bytes from a XPVGV structure in sv_unglob) | |
1344 | ||
1345 | So we are careful and work out the size of used parts of all the | |
1346 | structures. */ | |
878cc751 | 1347 | |
79072805 LW |
1348 | switch (SvTYPE(sv)) { |
1349 | case SVt_NULL: | |
79072805 | 1350 | break; |
79072805 | 1351 | case SVt_IV: |
ed6116ce | 1352 | if (mt == SVt_NV) |
463ee0b2 | 1353 | mt = SVt_PVNV; |
ed6116ce LW |
1354 | else if (mt < SVt_PVIV) |
1355 | mt = SVt_PVIV; | |
4cbc76b1 NC |
1356 | old_body_offset = STRUCT_OFFSET(XPVIV, xiv_iv); |
1357 | old_body_length = sizeof(IV); | |
79072805 LW |
1358 | break; |
1359 | case SVt_NV: | |
9a085840 | 1360 | old_body_arena = (void **) &PL_xnv_root; |
4cbc76b1 | 1361 | old_body_length = sizeof(NV); |
16b305e3 | 1362 | #ifndef NV_ZERO_IS_ALLBITS_ZERO |
4cbc76b1 | 1363 | zero_nv = FALSE; |
16b305e3 | 1364 | #endif |
ed6116ce | 1365 | if (mt < SVt_PVNV) |
79072805 LW |
1366 | mt = SVt_PVNV; |
1367 | break; | |
ed6116ce | 1368 | case SVt_RV: |
ed6116ce | 1369 | break; |
79072805 | 1370 | case SVt_PV: |
9a085840 | 1371 | old_body_arena = (void **) &PL_xpv_root; |
878cc751 NC |
1372 | old_body_offset = STRUCT_OFFSET(XPV, xpv_cur) |
1373 | - STRUCT_OFFSET(xpv_allocated, xpv_cur); | |
403d36eb NC |
1374 | old_body_length = STRUCT_OFFSET(XPV, xpv_len) |
1375 | + sizeof (((XPV*)SvANY(sv))->xpv_len) | |
1376 | - old_body_offset; | |
748a9306 LW |
1377 | if (mt <= SVt_IV) |
1378 | mt = SVt_PVIV; | |
1379 | else if (mt == SVt_NV) | |
1380 | mt = SVt_PVNV; | |
79072805 LW |
1381 | break; |
1382 | case SVt_PVIV: | |
9a085840 | 1383 | old_body_arena = (void **) &PL_xpviv_root; |
878cc751 NC |
1384 | old_body_offset = STRUCT_OFFSET(XPVIV, xpv_cur) |
1385 | - STRUCT_OFFSET(xpviv_allocated, xpv_cur); | |
403d36eb NC |
1386 | old_body_length = STRUCT_OFFSET(XPVIV, xiv_u) |
1387 | + sizeof (((XPVIV*)SvANY(sv))->xiv_u) | |
1388 | - old_body_offset; | |
79072805 LW |
1389 | break; |
1390 | case SVt_PVNV: | |
9a085840 | 1391 | old_body_arena = (void **) &PL_xpvnv_root; |
403d36eb NC |
1392 | old_body_length = STRUCT_OFFSET(XPVNV, xiv_u) |
1393 | + sizeof (((XPVNV*)SvANY(sv))->xiv_u); | |
16b305e3 | 1394 | #ifndef NV_ZERO_IS_ALLBITS_ZERO |
4cbc76b1 | 1395 | zero_nv = FALSE; |
16b305e3 | 1396 | #endif |
79072805 LW |
1397 | break; |
1398 | case SVt_PVMG: | |
0ec50a73 NC |
1399 | /* Because the XPVMG of PL_mess_sv isn't allocated from the arena, |
1400 | there's no way that it can be safely upgraded, because perl.c | |
1401 | expects to Safefree(SvANY(PL_mess_sv)) */ | |
1402 | assert(sv != PL_mess_sv); | |
bce8f412 NC |
1403 | /* This flag bit is used to mean other things in other scalar types. |
1404 | Given that it only has meaning inside the pad, it shouldn't be set | |
1405 | on anything that can get upgraded. */ | |
1406 | assert((SvFLAGS(sv) & SVpad_TYPED) == 0); | |
9a085840 | 1407 | old_body_arena = (void **) &PL_xpvmg_root; |
403d36eb NC |
1408 | old_body_length = STRUCT_OFFSET(XPVMG, xmg_stash) |
1409 | + sizeof (((XPVMG*)SvANY(sv))->xmg_stash); | |
16b305e3 | 1410 | #ifndef NV_ZERO_IS_ALLBITS_ZERO |
4cbc76b1 | 1411 | zero_nv = FALSE; |
16b305e3 | 1412 | #endif |
79072805 LW |
1413 | break; |
1414 | default: | |
cea2e8a9 | 1415 | Perl_croak(aTHX_ "Can't upgrade that kind of scalar"); |
79072805 LW |
1416 | } |
1417 | ||
ffb05e06 NC |
1418 | SvFLAGS(sv) &= ~SVTYPEMASK; |
1419 | SvFLAGS(sv) |= mt; | |
1420 | ||
79072805 LW |
1421 | switch (mt) { |
1422 | case SVt_NULL: | |
cea2e8a9 | 1423 | Perl_croak(aTHX_ "Can't upgrade to undef"); |
79072805 | 1424 | case SVt_IV: |
4cbc76b1 | 1425 | assert(old_type == SVt_NULL); |
339049b0 | 1426 | SvANY(sv) = (XPVIV*)((char*)&(sv->sv_u.svu_iv) - STRUCT_OFFSET(XPVIV, xiv_iv)); |
403d36eb | 1427 | SvIV_set(sv, 0); |
85274cbc | 1428 | return; |
79072805 | 1429 | case SVt_NV: |
4cbc76b1 | 1430 | assert(old_type == SVt_NULL); |
79072805 | 1431 | SvANY(sv) = new_XNV(); |
403d36eb | 1432 | SvNV_set(sv, 0); |
85274cbc | 1433 | return; |
ed6116ce | 1434 | case SVt_RV: |
4cbc76b1 | 1435 | assert(old_type == SVt_NULL); |
339049b0 | 1436 | SvANY(sv) = &sv->sv_u.svu_rv; |
403d36eb | 1437 | SvRV_set(sv, 0); |
85274cbc | 1438 | return; |
79072805 LW |
1439 | case SVt_PVHV: |
1440 | SvANY(sv) = new_XPVHV(); | |
463ee0b2 LW |
1441 | HvFILL(sv) = 0; |
1442 | HvMAX(sv) = 0; | |
8aacddc1 | 1443 | HvTOTALKEYS(sv) = 0; |
bd4b1eb5 | 1444 | |
2068cd4d NC |
1445 | goto hv_av_common; |
1446 | ||
1447 | case SVt_PVAV: | |
1448 | SvANY(sv) = new_XPVAV(); | |
1449 | AvMAX(sv) = -1; | |
1450 | AvFILLp(sv) = -1; | |
1451 | AvALLOC(sv) = 0; | |
1452 | AvREAL_only(sv); | |
1453 | ||
1454 | hv_av_common: | |
1455 | /* SVt_NULL isn't the only thing upgraded to AV or HV. | |
1456 | The target created by newSVrv also is, and it can have magic. | |
1457 | However, it never has SvPVX set. | |
1458 | */ | |
1459 | if (old_type >= SVt_RV) { | |
1460 | assert(SvPVX_const(sv) == 0); | |
8bd4d4c5 | 1461 | } |
2068cd4d NC |
1462 | |
1463 | /* Could put this in the else clause below, as PVMG must have SvPVX | |
1464 | 0 already (the assertion above) */ | |
bd4b1eb5 | 1465 | SvPV_set(sv, (char*)0); |
2068cd4d NC |
1466 | |
1467 | if (old_type >= SVt_PVMG) { | |
1468 | SvMAGIC_set(sv, ((XPVMG*)old_body)->xmg_magic); | |
1469 | SvSTASH_set(sv, ((XPVMG*)old_body)->xmg_stash); | |
1470 | } else { | |
1471 | SvMAGIC_set(sv, 0); | |
1472 | SvSTASH_set(sv, 0); | |
1473 | } | |
79072805 | 1474 | break; |
bd4b1eb5 NC |
1475 | |
1476 | case SVt_PVIO: | |
403d36eb NC |
1477 | new_body = new_XPVIO(); |
1478 | new_body_length = sizeof(XPVIO); | |
1479 | goto zero; | |
bd4b1eb5 | 1480 | case SVt_PVFM: |
403d36eb NC |
1481 | new_body = new_XPVFM(); |
1482 | new_body_length = sizeof(XPVFM); | |
1483 | goto zero; | |
1484 | ||
bd4b1eb5 | 1485 | case SVt_PVBM: |
403d36eb NC |
1486 | new_body_length = sizeof(XPVBM); |
1487 | new_body_arena = (void **) &PL_xpvbm_root; | |
1488 | new_body_arenaroot = (void **) &PL_xpvbm_arenaroot; | |
1489 | goto new_body; | |
bd4b1eb5 | 1490 | case SVt_PVGV: |
403d36eb NC |
1491 | new_body_length = sizeof(XPVGV); |
1492 | new_body_arena = (void **) &PL_xpvgv_root; | |
1493 | new_body_arenaroot = (void **) &PL_xpvgv_arenaroot; | |
1494 | goto new_body; | |
79072805 | 1495 | case SVt_PVCV: |
403d36eb NC |
1496 | new_body_length = sizeof(XPVCV); |
1497 | new_body_arena = (void **) &PL_xpvcv_root; | |
1498 | new_body_arenaroot = (void **) &PL_xpvcv_arenaroot; | |
1499 | goto new_body; | |
bd4b1eb5 | 1500 | case SVt_PVLV: |
403d36eb NC |
1501 | new_body_length = sizeof(XPVLV); |
1502 | new_body_arena = (void **) &PL_xpvlv_root; | |
1503 | new_body_arenaroot = (void **) &PL_xpvlv_arenaroot; | |
1504 | goto new_body; | |
1505 | case SVt_PVMG: | |
1506 | new_body_length = sizeof(XPVMG); | |
1507 | new_body_arena = (void **) &PL_xpvmg_root; | |
1508 | new_body_arenaroot = (void **) &PL_xpvmg_arenaroot; | |
1509 | goto new_body; | |
1510 | case SVt_PVNV: | |
1511 | new_body_length = sizeof(XPVNV); | |
1512 | new_body_arena = (void **) &PL_xpvnv_root; | |
1513 | new_body_arenaroot = (void **) &PL_xpvnv_arenaroot; | |
1514 | goto new_body; | |
1515 | case SVt_PVIV: | |
1516 | new_body_offset = STRUCT_OFFSET(XPVIV, xpv_cur) | |
1517 | - STRUCT_OFFSET(xpviv_allocated, xpv_cur); | |
1518 | new_body_length = sizeof(XPVIV) - new_body_offset; | |
1519 | new_body_arena = (void **) &PL_xpviv_root; | |
1520 | new_body_arenaroot = (void **) &PL_xpviv_arenaroot; | |
1521 | /* XXX Is this still needed? Was it ever needed? Surely as there is | |
1522 | no route from NV to PVIV, NOK can never be true */ | |
1523 | if (SvNIOK(sv)) | |
1524 | (void)SvIOK_on(sv); | |
1525 | SvNOK_off(sv); | |
1526 | goto new_body_no_NV; | |
1527 | case SVt_PV: | |
1528 | new_body_offset = STRUCT_OFFSET(XPV, xpv_cur) | |
1529 | - STRUCT_OFFSET(xpv_allocated, xpv_cur); | |
1530 | new_body_length = sizeof(XPV) - new_body_offset; | |
1531 | new_body_arena = (void **) &PL_xpv_root; | |
1532 | new_body_arenaroot = (void **) &PL_xpv_arenaroot; | |
1533 | new_body_no_NV: | |
1534 | /* PV and PVIV don't have an NV slot. */ | |
16b305e3 | 1535 | #ifndef NV_ZERO_IS_ALLBITS_ZERO |
403d36eb | 1536 | zero_nv = FALSE; |
16b305e3 | 1537 | #endif |
403d36eb | 1538 | |
16b305e3 NC |
1539 | new_body: |
1540 | assert(new_body_length); | |
403d36eb | 1541 | #ifndef PURIFY |
16b305e3 | 1542 | /* This points to the start of the allocated area. */ |
08742458 NC |
1543 | new_body_inline(new_body, new_body_arenaroot, new_body_arena, |
1544 | new_body_length); | |
403d36eb | 1545 | #else |
16b305e3 NC |
1546 | /* We always allocated the full length item with PURIFY */ |
1547 | new_body_length += new_body_offset; | |
1548 | new_body_offset = 0; | |
1549 | new_body = my_safemalloc(new_body_length); | |
403d36eb NC |
1550 | |
1551 | #endif | |
16b305e3 NC |
1552 | zero: |
1553 | Zero(new_body, new_body_length, char); | |
1554 | new_body = ((char *)new_body) - new_body_offset; | |
1555 | SvANY(sv) = new_body; | |
1556 | ||
1557 | if (old_body_length) { | |
1558 | Copy((char *)old_body + old_body_offset, | |
1559 | (char *)new_body + old_body_offset, | |
1560 | old_body_length, char); | |
1561 | } | |
403d36eb | 1562 | |
16b305e3 NC |
1563 | #ifndef NV_ZERO_IS_ALLBITS_ZERO |
1564 | if (zero_nv) | |
1565 | SvNV_set(sv, 0); | |
1566 | #endif | |
403d36eb | 1567 | |
16b305e3 NC |
1568 | if (mt == SVt_PVIO) |
1569 | IoPAGE_LEN(sv) = 60; | |
1570 | if (old_type < SVt_RV) | |
1571 | SvPV_set(sv, 0); | |
8990e307 | 1572 | break; |
403d36eb NC |
1573 | default: |
1574 | Perl_croak(aTHX_ "panic: sv_upgrade to unknown type %lu", mt); | |
8990e307 | 1575 | } |
878cc751 NC |
1576 | |
1577 | ||
1578 | if (old_body_arena) { | |
1579 | #ifdef PURIFY | |
ee6954bb | 1580 | my_safefree(old_body); |
878cc751 | 1581 | #else |
cb4415b8 NC |
1582 | del_body((void*)((char*)old_body + old_body_offset), |
1583 | old_body_arena); | |
878cc751 | 1584 | #endif |
2068cd4d | 1585 | } |
79072805 LW |
1586 | } |
1587 | ||
645c22ef DM |
1588 | /* |
1589 | =for apidoc sv_backoff | |
1590 | ||
1591 | Remove any string offset. You should normally use the C<SvOOK_off> macro | |
1592 | wrapper instead. | |
1593 | ||
1594 | =cut | |
1595 | */ | |
1596 | ||
79072805 | 1597 | int |
864dbfa3 | 1598 | Perl_sv_backoff(pTHX_ register SV *sv) |
79072805 LW |
1599 | { |
1600 | assert(SvOOK(sv)); | |
b79f7545 NC |
1601 | assert(SvTYPE(sv) != SVt_PVHV); |
1602 | assert(SvTYPE(sv) != SVt_PVAV); | |
463ee0b2 | 1603 | if (SvIVX(sv)) { |
53c1dcc0 | 1604 | const char * const s = SvPVX_const(sv); |
b162af07 | 1605 | SvLEN_set(sv, SvLEN(sv) + SvIVX(sv)); |
f880fe2f | 1606 | SvPV_set(sv, SvPVX(sv) - SvIVX(sv)); |
79072805 | 1607 | SvIV_set(sv, 0); |
463ee0b2 | 1608 | Move(s, SvPVX(sv), SvCUR(sv)+1, char); |
79072805 LW |
1609 | } |
1610 | SvFLAGS(sv) &= ~SVf_OOK; | |
a0d0e21e | 1611 | return 0; |
79072805 LW |
1612 | } |
1613 | ||
954c1994 GS |
1614 | /* |
1615 | =for apidoc sv_grow | |
1616 | ||
645c22ef DM |
1617 | Expands the character buffer in the SV. If necessary, uses C<sv_unref> and |
1618 | upgrades the SV to C<SVt_PV>. Returns a pointer to the character buffer. | |
1619 | Use the C<SvGROW> wrapper instead. | |
954c1994 GS |
1620 | |
1621 | =cut | |
1622 | */ | |
1623 | ||
79072805 | 1624 | char * |
864dbfa3 | 1625 | Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen) |
79072805 LW |
1626 | { |
1627 | register char *s; | |
1628 | ||
55497cff | 1629 | #ifdef HAS_64K_LIMIT |
79072805 | 1630 | if (newlen >= 0x10000) { |
1d7c1841 GS |
1631 | PerlIO_printf(Perl_debug_log, |
1632 | "Allocation too large: %"UVxf"\n", (UV)newlen); | |
79072805 LW |
1633 | my_exit(1); |
1634 | } | |
55497cff | 1635 | #endif /* HAS_64K_LIMIT */ |
a0d0e21e LW |
1636 | if (SvROK(sv)) |
1637 | sv_unref(sv); | |
79072805 LW |
1638 | if (SvTYPE(sv) < SVt_PV) { |
1639 | sv_upgrade(sv, SVt_PV); | |
93524f2b | 1640 | s = SvPVX_mutable(sv); |
79072805 LW |
1641 | } |
1642 | else if (SvOOK(sv)) { /* pv is offset? */ | |
1643 | sv_backoff(sv); | |
93524f2b | 1644 | s = SvPVX_mutable(sv); |
79072805 LW |
1645 | if (newlen > SvLEN(sv)) |
1646 | newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */ | |
c6f8c383 GA |
1647 | #ifdef HAS_64K_LIMIT |
1648 | if (newlen >= 0x10000) | |
1649 | newlen = 0xFFFF; | |
1650 | #endif | |
79072805 | 1651 | } |
bc44a8a2 | 1652 | else |
4d84ee25 | 1653 | s = SvPVX_mutable(sv); |
54f0641b | 1654 | |
79072805 | 1655 | if (newlen > SvLEN(sv)) { /* need more room? */ |
7a9b70e9 | 1656 | newlen = PERL_STRLEN_ROUNDUP(newlen); |
8d6dde3e | 1657 | if (SvLEN(sv) && s) { |
7bab3ede | 1658 | #ifdef MYMALLOC |
93524f2b | 1659 | const STRLEN l = malloced_size((void*)SvPVX_const(sv)); |
8d6dde3e IZ |
1660 | if (newlen <= l) { |
1661 | SvLEN_set(sv, l); | |
1662 | return s; | |
1663 | } else | |
c70c8a0a | 1664 | #endif |
1936d2a7 | 1665 | s = saferealloc(s, newlen); |
8d6dde3e | 1666 | } |
bfed75c6 | 1667 | else { |
1936d2a7 | 1668 | s = safemalloc(newlen); |
3f7c398e SP |
1669 | if (SvPVX_const(sv) && SvCUR(sv)) { |
1670 | Move(SvPVX_const(sv), s, (newlen < SvCUR(sv)) ? newlen : SvCUR(sv), char); | |
40565179 | 1671 | } |
4e83176d | 1672 | } |
79072805 | 1673 | SvPV_set(sv, s); |
e1ec3a88 | 1674 | SvLEN_set(sv, newlen); |
79072805 LW |
1675 | } |
1676 | return s; | |
1677 | } | |
1678 | ||
954c1994 GS |
1679 | /* |
1680 | =for apidoc sv_setiv | |
1681 | ||
645c22ef DM |
1682 | Copies an integer into the given SV, upgrading first if necessary. |
1683 | Does not handle 'set' magic. See also C<sv_setiv_mg>. | |
954c1994 GS |
1684 | |
1685 | =cut | |
1686 | */ | |
1687 | ||
79072805 | 1688 | void |
864dbfa3 | 1689 | Perl_sv_setiv(pTHX_ register SV *sv, IV i) |
79072805 | 1690 | { |
765f542d | 1691 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 LW |
1692 | switch (SvTYPE(sv)) { |
1693 | case SVt_NULL: | |
79072805 | 1694 | sv_upgrade(sv, SVt_IV); |
463ee0b2 LW |
1695 | break; |
1696 | case SVt_NV: | |
1697 | sv_upgrade(sv, SVt_PVNV); | |
1698 | break; | |
ed6116ce | 1699 | case SVt_RV: |
463ee0b2 | 1700 | case SVt_PV: |
79072805 | 1701 | sv_upgrade(sv, SVt_PVIV); |
463ee0b2 | 1702 | break; |
a0d0e21e LW |
1703 | |
1704 | case SVt_PVGV: | |
a0d0e21e LW |
1705 | case SVt_PVAV: |
1706 | case SVt_PVHV: | |
1707 | case SVt_PVCV: | |
1708 | case SVt_PVFM: | |
1709 | case SVt_PVIO: | |
411caa50 | 1710 | Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0), |
53e06cf0 | 1711 | OP_DESC(PL_op)); |
463ee0b2 | 1712 | } |
a0d0e21e | 1713 | (void)SvIOK_only(sv); /* validate number */ |
45977657 | 1714 | SvIV_set(sv, i); |
463ee0b2 | 1715 | SvTAINT(sv); |
79072805 LW |
1716 | } |
1717 | ||
954c1994 GS |
1718 | /* |
1719 | =for apidoc sv_setiv_mg | |
1720 | ||
1721 | Like C<sv_setiv>, but also handles 'set' magic. | |
1722 | ||
1723 | =cut | |
1724 | */ | |
1725 | ||
79072805 | 1726 | void |
864dbfa3 | 1727 | Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i) |
ef50df4b GS |
1728 | { |
1729 | sv_setiv(sv,i); | |
1730 | SvSETMAGIC(sv); | |
1731 | } | |
1732 | ||
954c1994 GS |
1733 | /* |
1734 | =for apidoc sv_setuv | |
1735 | ||
645c22ef DM |
1736 | Copies an unsigned integer into the given SV, upgrading first if necessary. |
1737 | Does not handle 'set' magic. See also C<sv_setuv_mg>. | |
954c1994 GS |
1738 | |
1739 | =cut | |
1740 | */ | |
1741 | ||
ef50df4b | 1742 | void |
864dbfa3 | 1743 | Perl_sv_setuv(pTHX_ register SV *sv, UV u) |
55497cff | 1744 | { |
55ada374 NC |
1745 | /* With these two if statements: |
1746 | u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865 | |
d460ef45 | 1747 | |
55ada374 NC |
1748 | without |
1749 | u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865 | |
d460ef45 | 1750 | |
55ada374 NC |
1751 | If you wish to remove them, please benchmark to see what the effect is |
1752 | */ | |
28e5dec8 JH |
1753 | if (u <= (UV)IV_MAX) { |
1754 | sv_setiv(sv, (IV)u); | |
1755 | return; | |
1756 | } | |
25da4f38 IZ |
1757 | sv_setiv(sv, 0); |
1758 | SvIsUV_on(sv); | |
607fa7f2 | 1759 | SvUV_set(sv, u); |
55497cff | 1760 | } |
1761 | ||
954c1994 GS |
1762 | /* |
1763 | =for apidoc sv_setuv_mg | |
1764 | ||
1765 | Like C<sv_setuv>, but also handles 'set' magic. | |
1766 | ||
1767 | =cut | |
1768 | */ | |
1769 | ||
55497cff | 1770 | void |
864dbfa3 | 1771 | Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u) |
ef50df4b | 1772 | { |
aa0f650e NC |
1773 | sv_setiv(sv, 0); |
1774 | SvIsUV_on(sv); | |
1775 | sv_setuv(sv,u); | |
ef50df4b GS |
1776 | SvSETMAGIC(sv); |
1777 | } | |
1778 | ||
954c1994 GS |
1779 | /* |
1780 | =for apidoc sv_setnv | |
1781 | ||
645c22ef DM |
1782 | Copies a double into the given SV, upgrading first if necessary. |
1783 | Does not handle 'set' magic. See also C<sv_setnv_mg>. | |
954c1994 GS |
1784 | |
1785 | =cut | |
1786 | */ | |
1787 | ||
ef50df4b | 1788 | void |
65202027 | 1789 | Perl_sv_setnv(pTHX_ register SV *sv, NV num) |
79072805 | 1790 | { |
765f542d | 1791 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
a0d0e21e LW |
1792 | switch (SvTYPE(sv)) { |
1793 | case SVt_NULL: | |
1794 | case SVt_IV: | |
79072805 | 1795 | sv_upgrade(sv, SVt_NV); |
a0d0e21e | 1796 | break; |
a0d0e21e LW |
1797 | case SVt_RV: |
1798 | case SVt_PV: | |
1799 | case SVt_PVIV: | |
79072805 | 1800 | sv_upgrade(sv, SVt_PVNV); |
a0d0e21e | 1801 | break; |
827b7e14 | 1802 | |
a0d0e21e | 1803 | case SVt_PVGV: |
a0d0e21e LW |
1804 | case SVt_PVAV: |
1805 | case SVt_PVHV: | |
1806 | case SVt_PVCV: | |
1807 | case SVt_PVFM: | |
1808 | case SVt_PVIO: | |
411caa50 | 1809 | Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0), |
53e06cf0 | 1810 | OP_NAME(PL_op)); |
79072805 | 1811 | } |
9d6ce603 | 1812 | SvNV_set(sv, num); |
a0d0e21e | 1813 | (void)SvNOK_only(sv); /* validate number */ |
463ee0b2 | 1814 | SvTAINT(sv); |
79072805 LW |
1815 | } |
1816 | ||
954c1994 GS |
1817 | /* |
1818 | =for apidoc sv_setnv_mg | |
1819 | ||
1820 | Like C<sv_setnv>, but also handles 'set' magic. | |
1821 | ||
1822 | =cut | |
1823 | */ | |
1824 | ||
ef50df4b | 1825 | void |
65202027 | 1826 | Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num) |
ef50df4b GS |
1827 | { |
1828 | sv_setnv(sv,num); | |
1829 | SvSETMAGIC(sv); | |
1830 | } | |
1831 | ||
645c22ef DM |
1832 | /* Print an "isn't numeric" warning, using a cleaned-up, |
1833 | * printable version of the offending string | |
1834 | */ | |
1835 | ||
76e3520e | 1836 | STATIC void |
cea2e8a9 | 1837 | S_not_a_number(pTHX_ SV *sv) |
a0d0e21e | 1838 | { |
94463019 JH |
1839 | SV *dsv; |
1840 | char tmpbuf[64]; | |
1b6737cc | 1841 | const char *pv; |
94463019 JH |
1842 | |
1843 | if (DO_UTF8(sv)) { | |
d0043bd1 | 1844 | dsv = sv_2mortal(newSVpvn("", 0)); |
94463019 JH |
1845 | pv = sv_uni_display(dsv, sv, 10, 0); |
1846 | } else { | |
1847 | char *d = tmpbuf; | |
551405c4 | 1848 | const char * const limit = tmpbuf + sizeof(tmpbuf) - 8; |
94463019 JH |
1849 | /* each *s can expand to 4 chars + "...\0", |
1850 | i.e. need room for 8 chars */ | |
ecdeb87c | 1851 | |
e62f0680 NC |
1852 | const char *s, *end; |
1853 | for (s = SvPVX_const(sv), end = s + SvCUR(sv); s < end && d < limit; | |
1854 | s++) { | |
94463019 JH |
1855 | int ch = *s & 0xFF; |
1856 | if (ch & 128 && !isPRINT_LC(ch)) { | |
1857 | *d++ = 'M'; | |
1858 | *d++ = '-'; | |
1859 | ch &= 127; | |
1860 | } | |
1861 | if (ch == '\n') { | |
1862 | *d++ = '\\'; | |
1863 | *d++ = 'n'; | |
1864 | } | |
1865 | else if (ch == '\r') { | |
1866 | *d++ = '\\'; | |
1867 | *d++ = 'r'; | |
1868 | } | |
1869 | else if (ch == '\f') { | |
1870 | *d++ = '\\'; | |
1871 | *d++ = 'f'; | |
1872 | } | |
1873 | else if (ch == '\\') { | |
1874 | *d++ = '\\'; | |
1875 | *d++ = '\\'; | |
1876 | } | |
1877 | else if (ch == '\0') { | |
1878 | *d++ = '\\'; | |
1879 | *d++ = '0'; | |
1880 | } | |
1881 | else if (isPRINT_LC(ch)) | |
1882 | *d++ = ch; | |
1883 | else { | |
1884 | *d++ = '^'; | |
1885 | *d++ = toCTRL(ch); | |
1886 | } | |
1887 | } | |
1888 | if (s < end) { | |
1889 | *d++ = '.'; | |
1890 | *d++ = '.'; | |
1891 | *d++ = '.'; | |
1892 | } | |
1893 | *d = '\0'; | |
1894 | pv = tmpbuf; | |
a0d0e21e | 1895 | } |
a0d0e21e | 1896 | |
533c011a | 1897 | if (PL_op) |
9014280d | 1898 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 JH |
1899 | "Argument \"%s\" isn't numeric in %s", pv, |
1900 | OP_DESC(PL_op)); | |
a0d0e21e | 1901 | else |
9014280d | 1902 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 | 1903 | "Argument \"%s\" isn't numeric", pv); |
a0d0e21e LW |
1904 | } |
1905 | ||
c2988b20 NC |
1906 | /* |
1907 | =for apidoc looks_like_number | |
1908 | ||
645c22ef DM |
1909 | Test if the content of an SV looks like a number (or is a number). |
1910 | C<Inf> and C<Infinity> are treated as numbers (so will not issue a | |
1911 | non-numeric warning), even if your atof() doesn't grok them. | |
c2988b20 NC |
1912 | |
1913 | =cut | |
1914 | */ | |
1915 | ||
1916 | I32 | |
1917 | Perl_looks_like_number(pTHX_ SV *sv) | |
1918 | { | |
a3b680e6 | 1919 | register const char *sbegin; |
c2988b20 NC |
1920 | STRLEN len; |
1921 | ||
1922 | if (SvPOK(sv)) { | |
3f7c398e | 1923 | sbegin = SvPVX_const(sv); |
c2988b20 NC |
1924 | len = SvCUR(sv); |
1925 | } | |
1926 | else if (SvPOKp(sv)) | |
83003860 | 1927 | sbegin = SvPV_const(sv, len); |
c2988b20 | 1928 | else |
e0ab1c0e | 1929 | return SvFLAGS(sv) & (SVf_NOK|SVp_NOK|SVf_IOK|SVp_IOK); |
c2988b20 NC |
1930 | return grok_number(sbegin, len, NULL); |
1931 | } | |
25da4f38 IZ |
1932 | |
1933 | /* Actually, ISO C leaves conversion of UV to IV undefined, but | |
1934 | until proven guilty, assume that things are not that bad... */ | |
1935 | ||
645c22ef DM |
1936 | /* |
1937 | NV_PRESERVES_UV: | |
1938 | ||
1939 | As 64 bit platforms often have an NV that doesn't preserve all bits of | |
28e5dec8 JH |
1940 | an IV (an assumption perl has been based on to date) it becomes necessary |
1941 | to remove the assumption that the NV always carries enough precision to | |
1942 | recreate the IV whenever needed, and that the NV is the canonical form. | |
1943 | Instead, IV/UV and NV need to be given equal rights. So as to not lose | |
645c22ef | 1944 | precision as a side effect of conversion (which would lead to insanity |
28e5dec8 JH |
1945 | and the dragon(s) in t/op/numconvert.t getting very angry) the intent is |
1946 | 1) to distinguish between IV/UV/NV slots that have cached a valid | |
1947 | conversion where precision was lost and IV/UV/NV slots that have a | |
1948 | valid conversion which has lost no precision | |
645c22ef | 1949 | 2) to ensure that if a numeric conversion to one form is requested that |
28e5dec8 JH |
1950 | would lose precision, the precise conversion (or differently |
1951 | imprecise conversion) is also performed and cached, to prevent | |
1952 | requests for different numeric formats on the same SV causing | |
1953 | lossy conversion chains. (lossless conversion chains are perfectly | |
1954 | acceptable (still)) | |
1955 | ||
1956 | ||
1957 | flags are used: | |
1958 | SvIOKp is true if the IV slot contains a valid value | |
1959 | SvIOK is true only if the IV value is accurate (UV if SvIOK_UV true) | |
1960 | SvNOKp is true if the NV slot contains a valid value | |
1961 | SvNOK is true only if the NV value is accurate | |
1962 | ||
1963 | so | |
645c22ef | 1964 | while converting from PV to NV, check to see if converting that NV to an |
28e5dec8 JH |
1965 | IV(or UV) would lose accuracy over a direct conversion from PV to |
1966 | IV(or UV). If it would, cache both conversions, return NV, but mark | |
1967 | SV as IOK NOKp (ie not NOK). | |
1968 | ||
645c22ef | 1969 | While converting from PV to IV, check to see if converting that IV to an |
28e5dec8 JH |
1970 | NV would lose accuracy over a direct conversion from PV to NV. If it |
1971 | would, cache both conversions, flag similarly. | |
1972 | ||
1973 | Before, the SV value "3.2" could become NV=3.2 IV=3 NOK, IOK quite | |
1974 | correctly because if IV & NV were set NV *always* overruled. | |
645c22ef DM |
1975 | Now, "3.2" will become NV=3.2 IV=3 NOK, IOKp, because the flag's meaning |
1976 | changes - now IV and NV together means that the two are interchangeable: | |
28e5dec8 | 1977 | SvIVX == (IV) SvNVX && SvNVX == (NV) SvIVX; |
d460ef45 | 1978 | |
645c22ef DM |
1979 | The benefit of this is that operations such as pp_add know that if |
1980 | SvIOK is true for both left and right operands, then integer addition | |
1981 | can be used instead of floating point (for cases where the result won't | |
1982 | overflow). Before, floating point was always used, which could lead to | |
28e5dec8 JH |
1983 | loss of precision compared with integer addition. |
1984 | ||
1985 | * making IV and NV equal status should make maths accurate on 64 bit | |
1986 | platforms | |
1987 | * may speed up maths somewhat if pp_add and friends start to use | |
645c22ef | 1988 | integers when possible instead of fp. (Hopefully the overhead in |
28e5dec8 JH |
1989 | looking for SvIOK and checking for overflow will not outweigh the |
1990 | fp to integer speedup) | |
1991 | * will slow down integer operations (callers of SvIV) on "inaccurate" | |
1992 | values, as the change from SvIOK to SvIOKp will cause a call into | |
1993 | sv_2iv each time rather than a macro access direct to the IV slot | |
1994 | * should speed up number->string conversion on integers as IV is | |
645c22ef | 1995 | favoured when IV and NV are equally accurate |
28e5dec8 JH |
1996 | |
1997 | #################################################################### | |
645c22ef DM |
1998 | You had better be using SvIOK_notUV if you want an IV for arithmetic: |
1999 | SvIOK is true if (IV or UV), so you might be getting (IV)SvUV. | |
2000 | On the other hand, SvUOK is true iff UV. | |
28e5dec8 JH |
2001 | #################################################################### |
2002 | ||
645c22ef | 2003 | Your mileage will vary depending your CPU's relative fp to integer |
28e5dec8 JH |
2004 | performance ratio. |
2005 | */ | |
2006 | ||
2007 | #ifndef NV_PRESERVES_UV | |
645c22ef DM |
2008 | # define IS_NUMBER_UNDERFLOW_IV 1 |
2009 | # define IS_NUMBER_UNDERFLOW_UV 2 | |
2010 | # define IS_NUMBER_IV_AND_UV 2 | |
2011 | # define IS_NUMBER_OVERFLOW_IV 4 | |
2012 | # define IS_NUMBER_OVERFLOW_UV 5 | |
2013 | ||
2014 | /* sv_2iuv_non_preserve(): private routine for use by sv_2iv() and sv_2uv() */ | |
28e5dec8 JH |
2015 | |
2016 | /* For sv_2nv these three cases are "SvNOK and don't bother casting" */ | |
2017 | STATIC int | |
645c22ef | 2018 | S_sv_2iuv_non_preserve(pTHX_ register SV *sv, I32 numtype) |
28e5dec8 | 2019 | { |
3f7c398e | 2020 | DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_2iuv_non '%s', IV=0x%"UVxf" NV=%"NVgf" inttype=%"UVXf"\n", SvPVX_const(sv), SvIVX(sv), SvNVX(sv), (UV)numtype)); |
28e5dec8 JH |
2021 | if (SvNVX(sv) < (NV)IV_MIN) { |
2022 | (void)SvIOKp_on(sv); | |
2023 | (void)SvNOK_on(sv); | |
45977657 | 2024 | SvIV_set(sv, IV_MIN); |
28e5dec8 JH |
2025 | return IS_NUMBER_UNDERFLOW_IV; |
2026 | } | |
2027 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2028 | (void)SvIOKp_on(sv); | |
2029 | (void)SvNOK_on(sv); | |
2030 | SvIsUV_on(sv); | |
607fa7f2 | 2031 | SvUV_set(sv, UV_MAX); |
28e5dec8 JH |
2032 | return IS_NUMBER_OVERFLOW_UV; |
2033 | } | |
c2988b20 NC |
2034 | (void)SvIOKp_on(sv); |
2035 | (void)SvNOK_on(sv); | |
2036 | /* Can't use strtol etc to convert this string. (See truth table in | |
2037 | sv_2iv */ | |
2038 | if (SvNVX(sv) <= (UV)IV_MAX) { | |
45977657 | 2039 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2040 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { |
2041 | SvIOK_on(sv); /* Integer is precise. NOK, IOK */ | |
2042 | } else { | |
2043 | /* Integer is imprecise. NOK, IOKp */ | |
2044 | } | |
2045 | return SvNVX(sv) < 0 ? IS_NUMBER_UNDERFLOW_UV : IS_NUMBER_IV_AND_UV; | |
2046 | } | |
2047 | SvIsUV_on(sv); | |
607fa7f2 | 2048 | SvUV_set(sv, U_V(SvNVX(sv))); |
c2988b20 NC |
2049 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { |
2050 | if (SvUVX(sv) == UV_MAX) { | |
2051 | /* As we know that NVs don't preserve UVs, UV_MAX cannot | |
2052 | possibly be preserved by NV. Hence, it must be overflow. | |
2053 | NOK, IOKp */ | |
2054 | return IS_NUMBER_OVERFLOW_UV; | |
2055 | } | |
2056 | SvIOK_on(sv); /* Integer is precise. NOK, UOK */ | |
2057 | } else { | |
2058 | /* Integer is imprecise. NOK, IOKp */ | |
28e5dec8 | 2059 | } |
c2988b20 | 2060 | return IS_NUMBER_OVERFLOW_IV; |
28e5dec8 | 2061 | } |
645c22ef DM |
2062 | #endif /* !NV_PRESERVES_UV*/ |
2063 | ||
2064 | /* | |
891f9566 | 2065 | =for apidoc sv_2iv_flags |
645c22ef | 2066 | |
891f9566 YST |
2067 | Return the integer value of an SV, doing any necessary string |
2068 | conversion. If flags includes SV_GMAGIC, does an mg_get() first. | |
2069 | Normally used via the C<SvIV(sv)> and C<SvIVx(sv)> macros. | |
645c22ef DM |
2070 | |
2071 | =cut | |
2072 | */ | |
28e5dec8 | 2073 | |
a0d0e21e | 2074 | IV |
891f9566 | 2075 | Perl_sv_2iv_flags(pTHX_ register SV *sv, I32 flags) |
79072805 LW |
2076 | { |
2077 | if (!sv) | |
2078 | return 0; | |
8990e307 | 2079 | if (SvGMAGICAL(sv)) { |
891f9566 YST |
2080 | if (flags & SV_GMAGIC) |
2081 | mg_get(sv); | |
463ee0b2 LW |
2082 | if (SvIOKp(sv)) |
2083 | return SvIVX(sv); | |
748a9306 | 2084 | if (SvNOKp(sv)) { |
25da4f38 | 2085 | return I_V(SvNVX(sv)); |
748a9306 | 2086 | } |
36477c24 | 2087 | if (SvPOKp(sv) && SvLEN(sv)) |
2088 | return asIV(sv); | |
3fe9a6f1 | 2089 | if (!SvROK(sv)) { |
d008e5eb | 2090 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
041457d9 | 2091 | if (!PL_localizing && ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2092 | report_uninit(sv); |
c6ee37c5 | 2093 | } |
36477c24 | 2094 | return 0; |
3fe9a6f1 | 2095 | } |
463ee0b2 | 2096 | } |
ed6116ce | 2097 | if (SvTHINKFIRST(sv)) { |
a0d0e21e | 2098 | if (SvROK(sv)) { |
551405c4 AL |
2099 | if (SvAMAGIC(sv)) { |
2100 | SV * const tmpstr=AMG_CALLun(sv,numer); | |
2101 | if (tmpstr && (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) { | |
2102 | return SvIV(tmpstr); | |
2103 | } | |
2104 | } | |
2105 | return PTR2IV(SvRV(sv)); | |
a0d0e21e | 2106 | } |
765f542d NC |
2107 | if (SvIsCOW(sv)) { |
2108 | sv_force_normal_flags(sv, 0); | |
47deb5e7 | 2109 | } |
0336b60e | 2110 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2111 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2112 | report_uninit(sv); |
ed6116ce LW |
2113 | return 0; |
2114 | } | |
79072805 | 2115 | } |
25da4f38 IZ |
2116 | if (SvIOKp(sv)) { |
2117 | if (SvIsUV(sv)) { | |
2118 | return (IV)(SvUVX(sv)); | |
2119 | } | |
2120 | else { | |
2121 | return SvIVX(sv); | |
2122 | } | |
463ee0b2 | 2123 | } |
748a9306 | 2124 | if (SvNOKp(sv)) { |
28e5dec8 JH |
2125 | /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv |
2126 | * without also getting a cached IV/UV from it at the same time | |
2127 | * (ie PV->NV conversion should detect loss of accuracy and cache | |
2128 | * IV or UV at same time to avoid this. NWC */ | |
25da4f38 IZ |
2129 | |
2130 | if (SvTYPE(sv) == SVt_NV) | |
2131 | sv_upgrade(sv, SVt_PVNV); | |
2132 | ||
28e5dec8 JH |
2133 | (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */ |
2134 | /* < not <= as for NV doesn't preserve UV, ((NV)IV_MAX+1) will almost | |
2135 | certainly cast into the IV range at IV_MAX, whereas the correct | |
2136 | answer is the UV IV_MAX +1. Hence < ensures that dodgy boundary | |
2137 | cases go to UV */ | |
2138 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
45977657 | 2139 | SvIV_set(sv, I_V(SvNVX(sv))); |
28e5dec8 JH |
2140 | if (SvNVX(sv) == (NV) SvIVX(sv) |
2141 | #ifndef NV_PRESERVES_UV | |
2142 | && (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2143 | (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv))) | |
2144 | /* Don't flag it as "accurately an integer" if the number | |
2145 | came from a (by definition imprecise) NV operation, and | |
2146 | we're outside the range of NV integer precision */ | |
2147 | #endif | |
2148 | ) { | |
2149 | SvIOK_on(sv); /* Can this go wrong with rounding? NWC */ | |
2150 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2151 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (precise)\n", |
28e5dec8 JH |
2152 | PTR2UV(sv), |
2153 | SvNVX(sv), | |
2154 | SvIVX(sv))); | |
2155 | ||
2156 | } else { | |
2157 | /* IV not precise. No need to convert from PV, as NV | |
2158 | conversion would already have cached IV if it detected | |
2159 | that PV->IV would be better than PV->NV->IV | |
2160 | flags already correct - don't set public IOK. */ | |
2161 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2162 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (imprecise)\n", |
28e5dec8 JH |
2163 | PTR2UV(sv), |
2164 | SvNVX(sv), | |
2165 | SvIVX(sv))); | |
2166 | } | |
2167 | /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN, | |
2168 | but the cast (NV)IV_MIN rounds to a the value less (more | |
2169 | negative) than IV_MIN which happens to be equal to SvNVX ?? | |
2170 | Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and | |
2171 | NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and | |
2172 | (NV)UVX == NVX are both true, but the values differ. :-( | |
2173 | Hopefully for 2s complement IV_MIN is something like | |
2174 | 0x8000000000000000 which will be exact. NWC */ | |
d460ef45 | 2175 | } |
25da4f38 | 2176 | else { |
607fa7f2 | 2177 | SvUV_set(sv, U_V(SvNVX(sv))); |
28e5dec8 JH |
2178 | if ( |
2179 | (SvNVX(sv) == (NV) SvUVX(sv)) | |
2180 | #ifndef NV_PRESERVES_UV | |
2181 | /* Make sure it's not 0xFFFFFFFFFFFFFFFF */ | |
2182 | /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */ | |
2183 | && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv)) | |
2184 | /* Don't flag it as "accurately an integer" if the number | |
2185 | came from a (by definition imprecise) NV operation, and | |
2186 | we're outside the range of NV integer precision */ | |
2187 | #endif | |
2188 | ) | |
2189 | SvIOK_on(sv); | |
25da4f38 IZ |
2190 | SvIsUV_on(sv); |
2191 | ret_iv_max: | |
1c846c1f | 2192 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
57def98f | 2193 | "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n", |
56431972 | 2194 | PTR2UV(sv), |
57def98f JH |
2195 | SvUVX(sv), |
2196 | SvUVX(sv))); | |
25da4f38 IZ |
2197 | return (IV)SvUVX(sv); |
2198 | } | |
748a9306 LW |
2199 | } |
2200 | else if (SvPOKp(sv) && SvLEN(sv)) { | |
c2988b20 | 2201 | UV value; |
504618e9 | 2202 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
25da4f38 IZ |
2203 | /* We want to avoid a possible problem when we cache an IV which |
2204 | may be later translated to an NV, and the resulting NV is not | |
c2988b20 NC |
2205 | the same as the direct translation of the initial string |
2206 | (eg 123.456 can shortcut to the IV 123 with atol(), but we must | |
2207 | be careful to ensure that the value with the .456 is around if the | |
2208 | NV value is requested in the future). | |
1c846c1f | 2209 | |
25da4f38 IZ |
2210 | This means that if we cache such an IV, we need to cache the |
2211 | NV as well. Moreover, we trade speed for space, and do not | |
28e5dec8 | 2212 | cache the NV if we are sure it's not needed. |
25da4f38 | 2213 | */ |
16b7a9a4 | 2214 | |
c2988b20 NC |
2215 | /* SVt_PVNV is one higher than SVt_PVIV, hence this order */ |
2216 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2217 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2218 | /* It's definitely an integer, only upgrade to PVIV */ |
28e5dec8 JH |
2219 | if (SvTYPE(sv) < SVt_PVIV) |
2220 | sv_upgrade(sv, SVt_PVIV); | |
f7bbb42a | 2221 | (void)SvIOK_on(sv); |
c2988b20 NC |
2222 | } else if (SvTYPE(sv) < SVt_PVNV) |
2223 | sv_upgrade(sv, SVt_PVNV); | |
28e5dec8 | 2224 | |
c2988b20 NC |
2225 | /* If NV preserves UV then we only use the UV value if we know that |
2226 | we aren't going to call atof() below. If NVs don't preserve UVs | |
2227 | then the value returned may have more precision than atof() will | |
2228 | return, even though value isn't perfectly accurate. */ | |
2229 | if ((numtype & (IS_NUMBER_IN_UV | |
2230 | #ifdef NV_PRESERVES_UV | |
2231 | | IS_NUMBER_NOT_INT | |
2232 | #endif | |
2233 | )) == IS_NUMBER_IN_UV) { | |
2234 | /* This won't turn off the public IOK flag if it was set above */ | |
2235 | (void)SvIOKp_on(sv); | |
2236 | ||
2237 | if (!(numtype & IS_NUMBER_NEG)) { | |
2238 | /* positive */; | |
2239 | if (value <= (UV)IV_MAX) { | |
45977657 | 2240 | SvIV_set(sv, (IV)value); |
c2988b20 | 2241 | } else { |
607fa7f2 | 2242 | SvUV_set(sv, value); |
c2988b20 NC |
2243 | SvIsUV_on(sv); |
2244 | } | |
2245 | } else { | |
2246 | /* 2s complement assumption */ | |
2247 | if (value <= (UV)IV_MIN) { | |
45977657 | 2248 | SvIV_set(sv, -(IV)value); |
c2988b20 NC |
2249 | } else { |
2250 | /* Too negative for an IV. This is a double upgrade, but | |
d1be9408 | 2251 | I'm assuming it will be rare. */ |
c2988b20 NC |
2252 | if (SvTYPE(sv) < SVt_PVNV) |
2253 | sv_upgrade(sv, SVt_PVNV); | |
2254 | SvNOK_on(sv); | |
2255 | SvIOK_off(sv); | |
2256 | SvIOKp_on(sv); | |
9d6ce603 | 2257 | SvNV_set(sv, -(NV)value); |
45977657 | 2258 | SvIV_set(sv, IV_MIN); |
c2988b20 NC |
2259 | } |
2260 | } | |
2261 | } | |
2262 | /* For !NV_PRESERVES_UV and IS_NUMBER_IN_UV and IS_NUMBER_NOT_INT we | |
2263 | will be in the previous block to set the IV slot, and the next | |
2264 | block to set the NV slot. So no else here. */ | |
2265 | ||
2266 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2267 | != IS_NUMBER_IN_UV) { | |
2268 | /* It wasn't an (integer that doesn't overflow the UV). */ | |
3f7c398e | 2269 | SvNV_set(sv, Atof(SvPVX_const(sv))); |
28e5dec8 | 2270 | |
c2988b20 NC |
2271 | if (! numtype && ckWARN(WARN_NUMERIC)) |
2272 | not_a_number(sv); | |
28e5dec8 | 2273 | |
65202027 | 2274 | #if defined(USE_LONG_DOUBLE) |
c2988b20 NC |
2275 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%" PERL_PRIgldbl ")\n", |
2276 | PTR2UV(sv), SvNVX(sv))); | |
65202027 | 2277 | #else |
1779d84d | 2278 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"NVgf")\n", |
c2988b20 | 2279 | PTR2UV(sv), SvNVX(sv))); |
65202027 | 2280 | #endif |
28e5dec8 JH |
2281 | |
2282 | ||
2283 | #ifdef NV_PRESERVES_UV | |
c2988b20 NC |
2284 | (void)SvIOKp_on(sv); |
2285 | (void)SvNOK_on(sv); | |
2286 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
45977657 | 2287 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2288 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { |
2289 | SvIOK_on(sv); | |
28e5dec8 | 2290 | } else { |
c2988b20 NC |
2291 | /* Integer is imprecise. NOK, IOKp */ |
2292 | } | |
2293 | /* UV will not work better than IV */ | |
2294 | } else { | |
2295 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2296 | SvIsUV_on(sv); | |
2297 | /* Integer is inaccurate. NOK, IOKp, is UV */ | |
607fa7f2 | 2298 | SvUV_set(sv, UV_MAX); |
c2988b20 NC |
2299 | SvIsUV_on(sv); |
2300 | } else { | |
607fa7f2 | 2301 | SvUV_set(sv, U_V(SvNVX(sv))); |
c2988b20 NC |
2302 | /* 0xFFFFFFFFFFFFFFFF not an issue in here */ |
2303 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
2304 | SvIOK_on(sv); | |
28e5dec8 JH |
2305 | SvIsUV_on(sv); |
2306 | } else { | |
c2988b20 NC |
2307 | /* Integer is imprecise. NOK, IOKp, is UV */ |
2308 | SvIsUV_on(sv); | |
28e5dec8 | 2309 | } |
28e5dec8 | 2310 | } |
c2988b20 NC |
2311 | goto ret_iv_max; |
2312 | } | |
28e5dec8 | 2313 | #else /* NV_PRESERVES_UV */ |
c2988b20 NC |
2314 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2315 | == (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) { | |
2316 | /* The IV slot will have been set from value returned by | |
2317 | grok_number above. The NV slot has just been set using | |
2318 | Atof. */ | |
560b0c46 | 2319 | SvNOK_on(sv); |
c2988b20 NC |
2320 | assert (SvIOKp(sv)); |
2321 | } else { | |
2322 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2323 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { | |
2324 | /* Small enough to preserve all bits. */ | |
2325 | (void)SvIOKp_on(sv); | |
2326 | SvNOK_on(sv); | |
45977657 | 2327 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2328 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) |
2329 | SvIOK_on(sv); | |
2330 | /* Assumption: first non-preserved integer is < IV_MAX, | |
2331 | this NV is in the preserved range, therefore: */ | |
2332 | if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)) | |
2333 | < (UV)IV_MAX)) { | |
32fdb065 | 2334 | 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 |
2335 | } |
2336 | } else { | |
2337 | /* IN_UV NOT_INT | |
2338 | 0 0 already failed to read UV. | |
2339 | 0 1 already failed to read UV. | |
2340 | 1 0 you won't get here in this case. IV/UV | |
2341 | slot set, public IOK, Atof() unneeded. | |
2342 | 1 1 already read UV. | |
2343 | so there's no point in sv_2iuv_non_preserve() attempting | |
2344 | to use atol, strtol, strtoul etc. */ | |
2345 | if (sv_2iuv_non_preserve (sv, numtype) | |
2346 | >= IS_NUMBER_OVERFLOW_IV) | |
2347 | goto ret_iv_max; | |
2348 | } | |
2349 | } | |
28e5dec8 | 2350 | #endif /* NV_PRESERVES_UV */ |
25da4f38 | 2351 | } |
28e5dec8 | 2352 | } else { |
041457d9 | 2353 | if (!PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP) && ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2354 | report_uninit(sv); |
25da4f38 IZ |
2355 | if (SvTYPE(sv) < SVt_IV) |
2356 | /* Typically the caller expects that sv_any is not NULL now. */ | |
2357 | sv_upgrade(sv, SVt_IV); | |
a0d0e21e | 2358 | return 0; |
79072805 | 2359 | } |
1d7c1841 GS |
2360 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n", |
2361 | PTR2UV(sv),SvIVX(sv))); | |
25da4f38 | 2362 | return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv); |
79072805 LW |
2363 | } |
2364 | ||
645c22ef | 2365 | /* |
891f9566 | 2366 | =for apidoc sv_2uv_flags |
645c22ef DM |
2367 | |
2368 | Return the unsigned integer value of an SV, doing any necessary string | |
891f9566 YST |
2369 | conversion. If flags includes SV_GMAGIC, does an mg_get() first. |
2370 | Normally used via the C<SvUV(sv)> and C<SvUVx(sv)> macros. | |
645c22ef DM |
2371 | |
2372 | =cut | |
2373 | */ | |
2374 | ||
ff68c719 | 2375 | UV |
891f9566 | 2376 | Perl_sv_2uv_flags(pTHX_ register SV *sv, I32 flags) |
ff68c719 | 2377 | { |
2378 | if (!sv) | |
2379 | return 0; | |
2380 | if (SvGMAGICAL(sv)) { | |
891f9566 YST |
2381 | if (flags & SV_GMAGIC) |
2382 | mg_get(sv); | |
ff68c719 | 2383 | if (SvIOKp(sv)) |
2384 | return SvUVX(sv); | |
2385 | if (SvNOKp(sv)) | |
2386 | return U_V(SvNVX(sv)); | |
36477c24 | 2387 | if (SvPOKp(sv) && SvLEN(sv)) |
2388 | return asUV(sv); | |
3fe9a6f1 | 2389 | if (!SvROK(sv)) { |
d008e5eb | 2390 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
041457d9 | 2391 | if (!PL_localizing && ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2392 | report_uninit(sv); |
c6ee37c5 | 2393 | } |
36477c24 | 2394 | return 0; |
3fe9a6f1 | 2395 | } |
ff68c719 | 2396 | } |
2397 | if (SvTHINKFIRST(sv)) { | |
2398 | if (SvROK(sv)) { | |
ff68c719 | 2399 | SV* tmpstr; |
1554e226 | 2400 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2401 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2402 | return SvUV(tmpstr); |
56431972 | 2403 | return PTR2UV(SvRV(sv)); |
ff68c719 | 2404 | } |
765f542d NC |
2405 | if (SvIsCOW(sv)) { |
2406 | sv_force_normal_flags(sv, 0); | |
8a818333 | 2407 | } |
0336b60e | 2408 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2409 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2410 | report_uninit(sv); |
ff68c719 | 2411 | return 0; |
2412 | } | |
2413 | } | |
25da4f38 IZ |
2414 | if (SvIOKp(sv)) { |
2415 | if (SvIsUV(sv)) { | |
2416 | return SvUVX(sv); | |
2417 | } | |
2418 | else { | |
2419 | return (UV)SvIVX(sv); | |
2420 | } | |
ff68c719 | 2421 | } |
2422 | if (SvNOKp(sv)) { | |
28e5dec8 JH |
2423 | /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv |
2424 | * without also getting a cached IV/UV from it at the same time | |
2425 | * (ie PV->NV conversion should detect loss of accuracy and cache | |
2426 | * IV or UV at same time to avoid this. */ | |
2427 | /* IV-over-UV optimisation - choose to cache IV if possible */ | |
2428 | ||
25da4f38 IZ |
2429 | if (SvTYPE(sv) == SVt_NV) |
2430 | sv_upgrade(sv, SVt_PVNV); | |
28e5dec8 JH |
2431 | |
2432 | (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */ | |
2433 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
45977657 | 2434 | SvIV_set(sv, I_V(SvNVX(sv))); |
28e5dec8 JH |
2435 | if (SvNVX(sv) == (NV) SvIVX(sv) |
2436 | #ifndef NV_PRESERVES_UV | |
2437 | && (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2438 | (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv))) | |
2439 | /* Don't flag it as "accurately an integer" if the number | |
2440 | came from a (by definition imprecise) NV operation, and | |
2441 | we're outside the range of NV integer precision */ | |
2442 | #endif | |
2443 | ) { | |
2444 | SvIOK_on(sv); /* Can this go wrong with rounding? NWC */ | |
2445 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2446 | "0x%"UVxf" uv(%"NVgf" => %"IVdf") (precise)\n", |
28e5dec8 JH |
2447 | PTR2UV(sv), |
2448 | SvNVX(sv), | |
2449 | SvIVX(sv))); | |
2450 | ||
2451 | } else { | |
2452 | /* IV not precise. No need to convert from PV, as NV | |
2453 | conversion would already have cached IV if it detected | |
2454 | that PV->IV would be better than PV->NV->IV | |
2455 | flags already correct - don't set public IOK. */ | |
2456 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2457 | "0x%"UVxf" uv(%"NVgf" => %"IVdf") (imprecise)\n", |
28e5dec8 JH |
2458 | PTR2UV(sv), |
2459 | SvNVX(sv), | |
2460 | SvIVX(sv))); | |
2461 | } | |
2462 | /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN, | |
2463 | but the cast (NV)IV_MIN rounds to a the value less (more | |
2464 | negative) than IV_MIN which happens to be equal to SvNVX ?? | |
2465 | Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and | |
2466 | NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and | |
2467 | (NV)UVX == NVX are both true, but the values differ. :-( | |
2468 | Hopefully for 2s complement IV_MIN is something like | |
2469 | 0x8000000000000000 which will be exact. NWC */ | |
d460ef45 | 2470 | } |
28e5dec8 | 2471 | else { |
607fa7f2 | 2472 | SvUV_set(sv, U_V(SvNVX(sv))); |
28e5dec8 JH |
2473 | if ( |
2474 | (SvNVX(sv) == (NV) SvUVX(sv)) | |
2475 | #ifndef NV_PRESERVES_UV | |
2476 | /* Make sure it's not 0xFFFFFFFFFFFFFFFF */ | |
2477 | /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */ | |
2478 | && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv)) | |
2479 | /* Don't flag it as "accurately an integer" if the number | |
2480 | came from a (by definition imprecise) NV operation, and | |
2481 | we're outside the range of NV integer precision */ | |
2482 | #endif | |
2483 | ) | |
2484 | SvIOK_on(sv); | |
2485 | SvIsUV_on(sv); | |
1c846c1f | 2486 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
28e5dec8 | 2487 | "0x%"UVxf" 2uv(%"UVuf" => %"IVdf") (as unsigned)\n", |
57def98f | 2488 | PTR2UV(sv), |
28e5dec8 JH |
2489 | SvUVX(sv), |
2490 | SvUVX(sv))); | |
25da4f38 | 2491 | } |
ff68c719 | 2492 | } |
2493 | else if (SvPOKp(sv) && SvLEN(sv)) { | |
c2988b20 | 2494 | UV value; |
504618e9 | 2495 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
25da4f38 IZ |
2496 | |
2497 | /* We want to avoid a possible problem when we cache a UV which | |
2498 | may be later translated to an NV, and the resulting NV is not | |
2499 | the translation of the initial data. | |
1c846c1f | 2500 | |
25da4f38 IZ |
2501 | This means that if we cache such a UV, we need to cache the |
2502 | NV as well. Moreover, we trade speed for space, and do not | |
2503 | cache the NV if not needed. | |
2504 | */ | |
16b7a9a4 | 2505 | |
c2988b20 NC |
2506 | /* SVt_PVNV is one higher than SVt_PVIV, hence this order */ |
2507 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2508 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2509 | /* It's definitely an integer, only upgrade to PVIV */ |
28e5dec8 | 2510 | if (SvTYPE(sv) < SVt_PVIV) |
f7bbb42a JH |
2511 | sv_upgrade(sv, SVt_PVIV); |
2512 | (void)SvIOK_on(sv); | |
c2988b20 NC |
2513 | } else if (SvTYPE(sv) < SVt_PVNV) |
2514 | sv_upgrade(sv, SVt_PVNV); | |
d460ef45 | 2515 | |
c2988b20 NC |
2516 | /* If NV preserves UV then we only use the UV value if we know that |
2517 | we aren't going to call atof() below. If NVs don't preserve UVs | |
2518 | then the value returned may have more precision than atof() will | |
2519 | return, even though it isn't accurate. */ | |
2520 | if ((numtype & (IS_NUMBER_IN_UV | |
2521 | #ifdef NV_PRESERVES_UV | |
2522 | | IS_NUMBER_NOT_INT | |
2523 | #endif | |
2524 | )) == IS_NUMBER_IN_UV) { | |
2525 | /* This won't turn off the public IOK flag if it was set above */ | |
2526 | (void)SvIOKp_on(sv); | |
2527 | ||
2528 | if (!(numtype & IS_NUMBER_NEG)) { | |
2529 | /* positive */; | |
2530 | if (value <= (UV)IV_MAX) { | |
45977657 | 2531 | SvIV_set(sv, (IV)value); |
28e5dec8 JH |
2532 | } else { |
2533 | /* it didn't overflow, and it was positive. */ | |
607fa7f2 | 2534 | SvUV_set(sv, value); |
28e5dec8 JH |
2535 | SvIsUV_on(sv); |
2536 | } | |
c2988b20 NC |
2537 | } else { |
2538 | /* 2s complement assumption */ | |
2539 | if (value <= (UV)IV_MIN) { | |
45977657 | 2540 | SvIV_set(sv, -(IV)value); |
c2988b20 NC |
2541 | } else { |
2542 | /* Too negative for an IV. This is a double upgrade, but | |
d1be9408 | 2543 | I'm assuming it will be rare. */ |
c2988b20 NC |
2544 | if (SvTYPE(sv) < SVt_PVNV) |
2545 | sv_upgrade(sv, SVt_PVNV); | |
2546 | SvNOK_on(sv); | |
2547 | SvIOK_off(sv); | |
2548 | SvIOKp_on(sv); | |
9d6ce603 | 2549 | SvNV_set(sv, -(NV)value); |
45977657 | 2550 | SvIV_set(sv, IV_MIN); |
c2988b20 NC |
2551 | } |
2552 | } | |
2553 | } | |
2554 | ||
2555 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2556 | != IS_NUMBER_IN_UV) { | |
2557 | /* It wasn't an integer, or it overflowed the UV. */ | |
3f7c398e | 2558 | SvNV_set(sv, Atof(SvPVX_const(sv))); |
28e5dec8 | 2559 | |
c2988b20 | 2560 | if (! numtype && ckWARN(WARN_NUMERIC)) |
28e5dec8 JH |
2561 | not_a_number(sv); |
2562 | ||
2563 | #if defined(USE_LONG_DOUBLE) | |
c2988b20 NC |
2564 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%" PERL_PRIgldbl ")\n", |
2565 | PTR2UV(sv), SvNVX(sv))); | |
28e5dec8 | 2566 | #else |
1779d84d | 2567 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"NVgf")\n", |
c2988b20 | 2568 | PTR2UV(sv), SvNVX(sv))); |
28e5dec8 JH |
2569 | #endif |
2570 | ||
2571 | #ifdef NV_PRESERVES_UV | |
c2988b20 NC |
2572 | (void)SvIOKp_on(sv); |
2573 | (void)SvNOK_on(sv); | |
2574 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
45977657 | 2575 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2576 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { |
2577 | SvIOK_on(sv); | |
2578 | } else { | |
2579 | /* Integer is imprecise. NOK, IOKp */ | |
2580 | } | |
2581 | /* UV will not work better than IV */ | |
2582 | } else { | |
2583 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2584 | SvIsUV_on(sv); | |
2585 | /* Integer is inaccurate. NOK, IOKp, is UV */ | |
607fa7f2 | 2586 | SvUV_set(sv, UV_MAX); |
c2988b20 NC |
2587 | SvIsUV_on(sv); |
2588 | } else { | |
607fa7f2 | 2589 | SvUV_set(sv, U_V(SvNVX(sv))); |
c2988b20 NC |
2590 | /* 0xFFFFFFFFFFFFFFFF not an issue in here, NVs |
2591 | NV preservse UV so can do correct comparison. */ | |
2592 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
2593 | SvIOK_on(sv); | |
2594 | SvIsUV_on(sv); | |
2595 | } else { | |
2596 | /* Integer is imprecise. NOK, IOKp, is UV */ | |
2597 | SvIsUV_on(sv); | |
2598 | } | |
2599 | } | |
2600 | } | |
28e5dec8 | 2601 | #else /* NV_PRESERVES_UV */ |
c2988b20 NC |
2602 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2603 | == (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) { | |
2604 | /* The UV slot will have been set from value returned by | |
2605 | grok_number above. The NV slot has just been set using | |
2606 | Atof. */ | |
560b0c46 | 2607 | SvNOK_on(sv); |
c2988b20 NC |
2608 | assert (SvIOKp(sv)); |
2609 | } else { | |
2610 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2611 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { | |
2612 | /* Small enough to preserve all bits. */ | |
2613 | (void)SvIOKp_on(sv); | |
2614 | SvNOK_on(sv); | |
45977657 | 2615 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2616 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) |
2617 | SvIOK_on(sv); | |
2618 | /* Assumption: first non-preserved integer is < IV_MAX, | |
2619 | this NV is in the preserved range, therefore: */ | |
2620 | if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)) | |
2621 | < (UV)IV_MAX)) { | |
32fdb065 | 2622 | 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 |
2623 | } |
2624 | } else | |
2625 | sv_2iuv_non_preserve (sv, numtype); | |
2626 | } | |
28e5dec8 | 2627 | #endif /* NV_PRESERVES_UV */ |
f7bbb42a | 2628 | } |
ff68c719 | 2629 | } |
2630 | else { | |
d008e5eb | 2631 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
041457d9 | 2632 | if (!PL_localizing && ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2633 | report_uninit(sv); |
c6ee37c5 | 2634 | } |
25da4f38 IZ |
2635 | if (SvTYPE(sv) < SVt_IV) |
2636 | /* Typically the caller expects that sv_any is not NULL now. */ | |
2637 | sv_upgrade(sv, SVt_IV); | |
ff68c719 | 2638 | return 0; |
2639 | } | |
25da4f38 | 2640 | |
1d7c1841 GS |
2641 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n", |
2642 | PTR2UV(sv),SvUVX(sv))); | |
25da4f38 | 2643 | return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv); |
ff68c719 | 2644 | } |
2645 | ||
645c22ef DM |
2646 | /* |
2647 | =for apidoc sv_2nv | |
2648 | ||
2649 | Return the num value of an SV, doing any necessary string or integer | |
2650 | conversion, magic etc. Normally used via the C<SvNV(sv)> and C<SvNVx(sv)> | |
2651 | macros. | |
2652 | ||
2653 | =cut | |
2654 | */ | |
2655 | ||
65202027 | 2656 | NV |
864dbfa3 | 2657 | Perl_sv_2nv(pTHX_ register SV *sv) |
79072805 LW |
2658 | { |
2659 | if (!sv) | |
2660 | return 0.0; | |
8990e307 | 2661 | if (SvGMAGICAL(sv)) { |
463ee0b2 LW |
2662 | mg_get(sv); |
2663 | if (SvNOKp(sv)) | |
2664 | return SvNVX(sv); | |
a0d0e21e | 2665 | if (SvPOKp(sv) && SvLEN(sv)) { |
041457d9 | 2666 | if (!SvIOKp(sv) && ckWARN(WARN_NUMERIC) && |
504618e9 | 2667 | !grok_number(SvPVX_const(sv), SvCUR(sv), NULL)) |
a0d0e21e | 2668 | not_a_number(sv); |
3f7c398e | 2669 | return Atof(SvPVX_const(sv)); |
a0d0e21e | 2670 | } |
25da4f38 | 2671 | if (SvIOKp(sv)) { |
1c846c1f | 2672 | if (SvIsUV(sv)) |
65202027 | 2673 | return (NV)SvUVX(sv); |
25da4f38 | 2674 | else |
65202027 | 2675 | return (NV)SvIVX(sv); |
25da4f38 | 2676 | } |
16d20bd9 | 2677 | if (!SvROK(sv)) { |
d008e5eb | 2678 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
041457d9 | 2679 | if (!PL_localizing && ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2680 | report_uninit(sv); |
c6ee37c5 | 2681 | } |
66a1b24b | 2682 | return (NV)0; |
16d20bd9 | 2683 | } |
463ee0b2 | 2684 | } |
ed6116ce | 2685 | if (SvTHINKFIRST(sv)) { |
a0d0e21e | 2686 | if (SvROK(sv)) { |
a0d0e21e | 2687 | SV* tmpstr; |
1554e226 | 2688 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2689 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2690 | return SvNV(tmpstr); |
56431972 | 2691 | return PTR2NV(SvRV(sv)); |
a0d0e21e | 2692 | } |
765f542d NC |
2693 | if (SvIsCOW(sv)) { |
2694 | sv_force_normal_flags(sv, 0); | |
8a818333 | 2695 | } |
0336b60e | 2696 | if (SvREADONLY(sv) && !SvOK(sv)) { |
599cee73 | 2697 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2698 | report_uninit(sv); |
ed6116ce LW |
2699 | return 0.0; |
2700 | } | |
79072805 LW |
2701 | } |
2702 | if (SvTYPE(sv) < SVt_NV) { | |
463ee0b2 LW |
2703 | if (SvTYPE(sv) == SVt_IV) |
2704 | sv_upgrade(sv, SVt_PVNV); | |
2705 | else | |
2706 | sv_upgrade(sv, SVt_NV); | |
906f284f | 2707 | #ifdef USE_LONG_DOUBLE |
097ee67d | 2708 | DEBUG_c({ |
f93f4e46 | 2709 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
2710 | PerlIO_printf(Perl_debug_log, |
2711 | "0x%"UVxf" num(%" PERL_PRIgldbl ")\n", | |
2712 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
2713 | RESTORE_NUMERIC_LOCAL(); |
2714 | }); | |
65202027 | 2715 | #else |
572bbb43 | 2716 | DEBUG_c({ |
f93f4e46 | 2717 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 2718 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%"NVgf")\n", |
1d7c1841 | 2719 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
2720 | RESTORE_NUMERIC_LOCAL(); |
2721 | }); | |
572bbb43 | 2722 | #endif |
79072805 LW |
2723 | } |
2724 | else if (SvTYPE(sv) < SVt_PVNV) | |
2725 | sv_upgrade(sv, SVt_PVNV); | |
59d8ce62 NC |
2726 | if (SvNOKp(sv)) { |
2727 | return SvNVX(sv); | |
61604483 | 2728 | } |
59d8ce62 | 2729 | if (SvIOKp(sv)) { |
9d6ce603 | 2730 | SvNV_set(sv, SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv)); |
28e5dec8 JH |
2731 | #ifdef NV_PRESERVES_UV |
2732 | SvNOK_on(sv); | |
2733 | #else | |
2734 | /* Only set the public NV OK flag if this NV preserves the IV */ | |
2735 | /* Check it's not 0xFFFFFFFFFFFFFFFF */ | |
2736 | if (SvIsUV(sv) ? ((SvUVX(sv) != UV_MAX)&&(SvUVX(sv) == U_V(SvNVX(sv)))) | |
2737 | : (SvIVX(sv) == I_V(SvNVX(sv)))) | |
2738 | SvNOK_on(sv); | |
2739 | else | |
2740 | SvNOKp_on(sv); | |
2741 | #endif | |
93a17b20 | 2742 | } |
748a9306 | 2743 | else if (SvPOKp(sv) && SvLEN(sv)) { |
c2988b20 | 2744 | UV value; |
3f7c398e | 2745 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
041457d9 | 2746 | if (!SvIOKp(sv) && !numtype && ckWARN(WARN_NUMERIC)) |
a0d0e21e | 2747 | not_a_number(sv); |
28e5dec8 | 2748 | #ifdef NV_PRESERVES_UV |
c2988b20 NC |
2749 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2750 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2751 | /* It's definitely an integer */ |
9d6ce603 | 2752 | SvNV_set(sv, (numtype & IS_NUMBER_NEG) ? -(NV)value : (NV)value); |
c2988b20 | 2753 | } else |
3f7c398e | 2754 | SvNV_set(sv, Atof(SvPVX_const(sv))); |
28e5dec8 JH |
2755 | SvNOK_on(sv); |
2756 | #else | |
3f7c398e | 2757 | SvNV_set(sv, Atof(SvPVX_const(sv))); |
28e5dec8 JH |
2758 | /* Only set the public NV OK flag if this NV preserves the value in |
2759 | the PV at least as well as an IV/UV would. | |
2760 | Not sure how to do this 100% reliably. */ | |
2761 | /* if that shift count is out of range then Configure's test is | |
2762 | wonky. We shouldn't be in here with NV_PRESERVES_UV_BITS == | |
2763 | UV_BITS */ | |
2764 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
c2988b20 | 2765 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { |
28e5dec8 | 2766 | SvNOK_on(sv); /* Definitely small enough to preserve all bits */ |
c2988b20 NC |
2767 | } else if (!(numtype & IS_NUMBER_IN_UV)) { |
2768 | /* Can't use strtol etc to convert this string, so don't try. | |
2769 | sv_2iv and sv_2uv will use the NV to convert, not the PV. */ | |
2770 | SvNOK_on(sv); | |
2771 | } else { | |
2772 | /* value has been set. It may not be precise. */ | |
2773 | if ((numtype & IS_NUMBER_NEG) && (value > (UV)IV_MIN)) { | |
2774 | /* 2s complement assumption for (UV)IV_MIN */ | |
2775 | SvNOK_on(sv); /* Integer is too negative. */ | |
2776 | } else { | |
2777 | SvNOKp_on(sv); | |
2778 | SvIOKp_on(sv); | |
6fa402ec | 2779 | |
c2988b20 | 2780 | if (numtype & IS_NUMBER_NEG) { |
45977657 | 2781 | SvIV_set(sv, -(IV)value); |
c2988b20 | 2782 | } else if (value <= (UV)IV_MAX) { |
45977657 | 2783 | SvIV_set(sv, (IV)value); |
c2988b20 | 2784 | } else { |
607fa7f2 | 2785 | SvUV_set(sv, value); |
c2988b20 NC |
2786 | SvIsUV_on(sv); |
2787 | } | |
2788 | ||
2789 | if (numtype & IS_NUMBER_NOT_INT) { | |
2790 | /* I believe that even if the original PV had decimals, | |
2791 | they are lost beyond the limit of the FP precision. | |
2792 | However, neither is canonical, so both only get p | |
2793 | flags. NWC, 2000/11/25 */ | |
2794 | /* Both already have p flags, so do nothing */ | |
2795 | } else { | |
66a1b24b | 2796 | const NV nv = SvNVX(sv); |
c2988b20 NC |
2797 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { |
2798 | if (SvIVX(sv) == I_V(nv)) { | |
2799 | SvNOK_on(sv); | |
2800 | SvIOK_on(sv); | |
2801 | } else { | |
2802 | SvIOK_on(sv); | |
2803 | /* It had no "." so it must be integer. */ | |
2804 | } | |
2805 | } else { | |
2806 | /* between IV_MAX and NV(UV_MAX). | |
2807 | Could be slightly > UV_MAX */ | |
6fa402ec | 2808 | |
c2988b20 NC |
2809 | if (numtype & IS_NUMBER_NOT_INT) { |
2810 | /* UV and NV both imprecise. */ | |
2811 | } else { | |
66a1b24b | 2812 | const UV nv_as_uv = U_V(nv); |
c2988b20 NC |
2813 | |
2814 | if (value == nv_as_uv && SvUVX(sv) != UV_MAX) { | |
2815 | SvNOK_on(sv); | |
2816 | SvIOK_on(sv); | |
2817 | } else { | |
2818 | SvIOK_on(sv); | |
2819 | } | |
2820 | } | |
2821 | } | |
2822 | } | |
2823 | } | |
2824 | } | |
28e5dec8 | 2825 | #endif /* NV_PRESERVES_UV */ |
93a17b20 | 2826 | } |
79072805 | 2827 | else { |
041457d9 | 2828 | if (!PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP) && ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2829 | report_uninit(sv); |
25da4f38 IZ |
2830 | if (SvTYPE(sv) < SVt_NV) |
2831 | /* Typically the caller expects that sv_any is not NULL now. */ | |
28e5dec8 JH |
2832 | /* XXX Ilya implies that this is a bug in callers that assume this |
2833 | and ideally should be fixed. */ | |
25da4f38 | 2834 | sv_upgrade(sv, SVt_NV); |
a0d0e21e | 2835 | return 0.0; |
79072805 | 2836 | } |
572bbb43 | 2837 | #if defined(USE_LONG_DOUBLE) |
097ee67d | 2838 | DEBUG_c({ |
f93f4e46 | 2839 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
2840 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n", |
2841 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
2842 | RESTORE_NUMERIC_LOCAL(); |
2843 | }); | |
65202027 | 2844 | #else |
572bbb43 | 2845 | DEBUG_c({ |
f93f4e46 | 2846 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 2847 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%"NVgf")\n", |
1d7c1841 | 2848 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
2849 | RESTORE_NUMERIC_LOCAL(); |
2850 | }); | |
572bbb43 | 2851 | #endif |
463ee0b2 | 2852 | return SvNVX(sv); |
79072805 LW |
2853 | } |
2854 | ||
645c22ef DM |
2855 | /* asIV(): extract an integer from the string value of an SV. |
2856 | * Caller must validate PVX */ | |
2857 | ||
76e3520e | 2858 | STATIC IV |
cea2e8a9 | 2859 | S_asIV(pTHX_ SV *sv) |
36477c24 | 2860 | { |
c2988b20 | 2861 | UV value; |
66a1b24b | 2862 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
c2988b20 NC |
2863 | |
2864 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2865 | == IS_NUMBER_IN_UV) { | |
645c22ef | 2866 | /* It's definitely an integer */ |
c2988b20 NC |
2867 | if (numtype & IS_NUMBER_NEG) { |
2868 | if (value < (UV)IV_MIN) | |
2869 | return -(IV)value; | |
2870 | } else { | |
2871 | if (value < (UV)IV_MAX) | |
2872 | return (IV)value; | |
2873 | } | |
2874 | } | |
d008e5eb | 2875 | if (!numtype) { |
d008e5eb GS |
2876 | if (ckWARN(WARN_NUMERIC)) |
2877 | not_a_number(sv); | |
2878 | } | |
3f7c398e | 2879 | return I_V(Atof(SvPVX_const(sv))); |
36477c24 | 2880 | } |
2881 | ||
645c22ef DM |
2882 | /* asUV(): extract an unsigned integer from the string value of an SV |
2883 | * Caller must validate PVX */ | |
2884 | ||
76e3520e | 2885 | STATIC UV |
cea2e8a9 | 2886 | S_asUV(pTHX_ SV *sv) |
36477c24 | 2887 | { |
c2988b20 | 2888 | UV value; |
504618e9 | 2889 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
36477c24 | 2890 | |
c2988b20 NC |
2891 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2892 | == IS_NUMBER_IN_UV) { | |
645c22ef | 2893 | /* It's definitely an integer */ |
6fa402ec | 2894 | if (!(numtype & IS_NUMBER_NEG)) |
c2988b20 NC |
2895 | return value; |
2896 | } | |
d008e5eb | 2897 | if (!numtype) { |
d008e5eb GS |
2898 | if (ckWARN(WARN_NUMERIC)) |
2899 | not_a_number(sv); | |
2900 | } | |
3f7c398e | 2901 | return U_V(Atof(SvPVX_const(sv))); |
36477c24 | 2902 | } |
2903 | ||
645c22ef DM |
2904 | /* uiv_2buf(): private routine for use by sv_2pv_flags(): print an IV or |
2905 | * UV as a string towards the end of buf, and return pointers to start and | |
2906 | * end of it. | |
2907 | * | |
2908 | * We assume that buf is at least TYPE_CHARS(UV) long. | |
2909 | */ | |
2910 | ||
864dbfa3 | 2911 | static char * |
aec46f14 | 2912 | S_uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob) |
25da4f38 | 2913 | { |
25da4f38 | 2914 | char *ptr = buf + TYPE_CHARS(UV); |
823a54a3 | 2915 | char * const ebuf = ptr; |
25da4f38 | 2916 | int sign; |
25da4f38 IZ |
2917 | |
2918 | if (is_uv) | |
2919 | sign = 0; | |
2920 | else if (iv >= 0) { | |
2921 | uv = iv; | |
2922 | sign = 0; | |
2923 | } else { | |
2924 | uv = -iv; | |
2925 | sign = 1; | |
2926 | } | |
2927 | do { | |
eb160463 | 2928 | *--ptr = '0' + (char)(uv % 10); |
25da4f38 IZ |
2929 | } while (uv /= 10); |
2930 | if (sign) | |
2931 | *--ptr = '-'; | |
2932 | *peob = ebuf; | |
2933 | return ptr; | |
2934 | } | |
2935 | ||
645c22ef DM |
2936 | /* |
2937 | =for apidoc sv_2pv_flags | |
2938 | ||
ff276b08 | 2939 | Returns a pointer to the string value of an SV, and sets *lp to its length. |
645c22ef DM |
2940 | If flags includes SV_GMAGIC, does an mg_get() first. Coerces sv to a string |
2941 | if necessary. | |
2942 | Normally invoked via the C<SvPV_flags> macro. C<sv_2pv()> and C<sv_2pv_nomg> | |
2943 | usually end up here too. | |
2944 | ||
2945 | =cut | |
2946 | */ | |
2947 | ||
8d6d96c1 HS |
2948 | char * |
2949 | Perl_sv_2pv_flags(pTHX_ register SV *sv, STRLEN *lp, I32 flags) | |
2950 | { | |
79072805 LW |
2951 | register char *s; |
2952 | int olderrno; | |
cb50f42d | 2953 | SV *tsv, *origsv; |
25da4f38 IZ |
2954 | char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */ |
2955 | char *tmpbuf = tbuf; | |
8a9c777e | 2956 | STRLEN len = 0; /* Hush gcc. len is always initialised before use. */ |
79072805 | 2957 | |
463ee0b2 | 2958 | if (!sv) { |
cdb061a3 NC |
2959 | if (lp) |
2960 | *lp = 0; | |
73d840c0 | 2961 | return (char *)""; |
463ee0b2 | 2962 | } |
8990e307 | 2963 | if (SvGMAGICAL(sv)) { |
8d6d96c1 HS |
2964 | if (flags & SV_GMAGIC) |
2965 | mg_get(sv); | |
463ee0b2 | 2966 | if (SvPOKp(sv)) { |
cdb061a3 NC |
2967 | if (lp) |
2968 | *lp = SvCUR(sv); | |
10516c54 NC |
2969 | if (flags & SV_MUTABLE_RETURN) |
2970 | return SvPVX_mutable(sv); | |
4d84ee25 NC |
2971 | if (flags & SV_CONST_RETURN) |
2972 | return (char *)SvPVX_const(sv); | |
463ee0b2 LW |
2973 | return SvPVX(sv); |
2974 | } | |
cf2093f6 | 2975 | if (SvIOKp(sv)) { |
8a9c777e NC |
2976 | len = SvIsUV(sv) ? my_sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv)) |
2977 | : my_sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv)); | |
46fc3d4c | 2978 | tsv = Nullsv; |
8a9c777e | 2979 | goto tokensave_has_len; |
463ee0b2 LW |
2980 | } |
2981 | if (SvNOKp(sv)) { | |
2d4389e4 | 2982 | Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf); |
46fc3d4c | 2983 | tsv = Nullsv; |
a0d0e21e | 2984 | goto tokensave; |
463ee0b2 | 2985 | } |
16d20bd9 | 2986 | if (!SvROK(sv)) { |
d008e5eb | 2987 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
041457d9 | 2988 | if (!PL_localizing && ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2989 | report_uninit(sv); |
c6ee37c5 | 2990 | } |
cdb061a3 NC |
2991 | if (lp) |
2992 | *lp = 0; | |
73d840c0 | 2993 | return (char *)""; |
16d20bd9 | 2994 | } |
463ee0b2 | 2995 | } |
ed6116ce LW |
2996 | if (SvTHINKFIRST(sv)) { |
2997 | if (SvROK(sv)) { | |
a0d0e21e | 2998 | SV* tmpstr; |
e1ec3a88 | 2999 | register const char *typestr; |
1554e226 | 3000 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) && |
b4b9a328 | 3001 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) { |
50adf7d2 NC |
3002 | /* Unwrap this: */ |
3003 | /* char *pv = lp ? SvPV(tmpstr, *lp) : SvPV_nolen(tmpstr); */ | |
3004 | ||
3005 | char *pv; | |
3006 | if ((SvFLAGS(tmpstr) & (SVf_POK)) == SVf_POK) { | |
3007 | if (flags & SV_CONST_RETURN) { | |
3008 | pv = (char *) SvPVX_const(tmpstr); | |
3009 | } else { | |
3010 | pv = (flags & SV_MUTABLE_RETURN) | |
3011 | ? SvPVX_mutable(tmpstr) : SvPVX(tmpstr); | |
3012 | } | |
3013 | if (lp) | |
3014 | *lp = SvCUR(tmpstr); | |
3015 | } else { | |
3016 | pv = sv_2pv_flags(tmpstr, lp, flags); | |
3017 | } | |
446eaa42 YST |
3018 | if (SvUTF8(tmpstr)) |
3019 | SvUTF8_on(sv); | |
3020 | else | |
3021 | SvUTF8_off(sv); | |
3022 | return pv; | |
3023 | } | |
cb50f42d | 3024 | origsv = sv; |
ed6116ce LW |
3025 | sv = (SV*)SvRV(sv); |
3026 | if (!sv) | |
e1ec3a88 | 3027 | typestr = "NULLREF"; |
ed6116ce | 3028 | else { |
f9277f47 IZ |
3029 | MAGIC *mg; |
3030 | ||
ed6116ce | 3031 | switch (SvTYPE(sv)) { |
f9277f47 IZ |
3032 | case SVt_PVMG: |
3033 | if ( ((SvFLAGS(sv) & | |
1c846c1f | 3034 | (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG)) |
faf82a0b | 3035 | == (SVs_OBJECT|SVs_SMG)) |
14befaf4 | 3036 | && (mg = mg_find(sv, PERL_MAGIC_qr))) { |
e1ec3a88 | 3037 | const regexp *re = (regexp *)mg->mg_obj; |
1bd3ad17 | 3038 | |
2cd61cdb | 3039 | if (!mg->mg_ptr) { |
e1ec3a88 | 3040 | const char *fptr = "msix"; |
8782bef2 GB |
3041 | char reflags[6]; |
3042 | char ch; | |
3043 | int left = 0; | |
3044 | int right = 4; | |
ff385a1b | 3045 | char need_newline = 0; |
eb160463 | 3046 | U16 reganch = (U16)((re->reganch & PMf_COMPILETIME) >> 12); |
8782bef2 | 3047 | |
155aba94 | 3048 | while((ch = *fptr++)) { |
8782bef2 GB |
3049 | if(reganch & 1) { |
3050 | reflags[left++] = ch; | |
3051 | } | |
3052 | else { | |
3053 | reflags[right--] = ch; | |
3054 | } | |
3055 | reganch >>= 1; | |
3056 | } | |
3057 | if(left != 4) { | |
3058 | reflags[left] = '-'; | |
3059 | left = 5; | |
3060 | } | |
3061 | ||
3062 | mg->mg_len = re->prelen + 4 + left; | |
ff385a1b JF |
3063 | /* |
3064 | * If /x was used, we have to worry about a regex | |
3065 | * ending with a comment later being embedded | |
3066 | * within another regex. If so, we don't want this | |
3067 | * regex's "commentization" to leak out to the | |
3068 | * right part of the enclosing regex, we must cap | |
3069 | * it with a newline. | |
3070 | * | |
3071 | * So, if /x was used, we scan backwards from the | |
3072 | * end of the regex. If we find a '#' before we | |
3073 | * find a newline, we need to add a newline | |
3074 | * ourself. If we find a '\n' first (or if we | |
3075 | * don't find '#' or '\n'), we don't need to add | |
3076 | * anything. -jfriedl | |
3077 | */ | |
3078 | if (PMf_EXTENDED & re->reganch) | |
3079 | { | |
e1ec3a88 | 3080 | const char *endptr = re->precomp + re->prelen; |
ff385a1b JF |
3081 | while (endptr >= re->precomp) |
3082 | { | |
e1ec3a88 | 3083 | const char c = *(endptr--); |
ff385a1b JF |
3084 | if (c == '\n') |
3085 | break; /* don't need another */ | |
3086 | if (c == '#') { | |
3087 | /* we end while in a comment, so we | |
3088 | need a newline */ | |
3089 | mg->mg_len++; /* save space for it */ | |
3090 | need_newline = 1; /* note to add it */ | |
ab01544f | 3091 | break; |
ff385a1b JF |
3092 | } |
3093 | } | |
3094 | } | |
3095 | ||
a02a5408 | 3096 | Newx(mg->mg_ptr, mg->mg_len + 1 + left, char); |
8782bef2 GB |
3097 | Copy("(?", mg->mg_ptr, 2, char); |
3098 | Copy(reflags, mg->mg_ptr+2, left, char); | |
3099 | Copy(":", mg->mg_ptr+left+2, 1, char); | |
3100 | Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char); | |
ff385a1b JF |
3101 | if (need_newline) |
3102 | mg->mg_ptr[mg->mg_len - 2] = '\n'; | |
1bd3ad17 IZ |
3103 | mg->mg_ptr[mg->mg_len - 1] = ')'; |
3104 | mg->mg_ptr[mg->mg_len] = 0; | |
3105 | } | |
3280af22 | 3106 | PL_reginterp_cnt += re->program[0].next_off; |
cb50f42d YST |
3107 | |
3108 | if (re->reganch & ROPT_UTF8) | |
3109 | SvUTF8_on(origsv); | |
3110 | else | |
3111 | SvUTF8_off(origsv); | |
cdb061a3 NC |
3112 | if (lp) |
3113 | *lp = mg->mg_len; | |
1bd3ad17 | 3114 | return mg->mg_ptr; |
f9277f47 IZ |
3115 | } |
3116 | /* Fall through */ | |
ed6116ce LW |
3117 | case SVt_NULL: |
3118 | case SVt_IV: | |
3119 | case SVt_NV: | |
3120 | case SVt_RV: | |
3121 | case SVt_PV: | |
3122 | case SVt_PVIV: | |
3123 | case SVt_PVNV: | |
e1ec3a88 AL |
3124 | case SVt_PVBM: typestr = SvROK(sv) ? "REF" : "SCALAR"; break; |
3125 | case SVt_PVLV: typestr = SvROK(sv) ? "REF" | |
be65207d DM |
3126 | /* tied lvalues should appear to be |
3127 | * scalars for backwards compatitbility */ | |
3128 | : (LvTYPE(sv) == 't' || LvTYPE(sv) == 'T') | |
3129 | ? "SCALAR" : "LVALUE"; break; | |
e1ec3a88 AL |
3130 | case SVt_PVAV: typestr = "ARRAY"; break; |
3131 | case SVt_PVHV: typestr = "HASH"; break; | |
3132 | case SVt_PVCV: typestr = "CODE"; break; | |
3133 | case SVt_PVGV: typestr = "GLOB"; break; | |
3134 | case SVt_PVFM: typestr = "FORMAT"; break; | |
3135 | case SVt_PVIO: typestr = "IO"; break; | |
3136 | default: typestr = "UNKNOWN"; break; | |
ed6116ce | 3137 | } |
46fc3d4c | 3138 | tsv = NEWSV(0,0); |
a5cb6b62 | 3139 | if (SvOBJECT(sv)) { |
c4420975 | 3140 | const char * const name = HvNAME_get(SvSTASH(sv)); |
a5cb6b62 | 3141 | Perl_sv_setpvf(aTHX_ tsv, "%s=%s(0x%"UVxf")", |
e1ec3a88 | 3142 | name ? name : "__ANON__" , typestr, PTR2UV(sv)); |
a5cb6b62 | 3143 | } |
ed6116ce | 3144 | else |
e1ec3a88 | 3145 | Perl_sv_setpvf(aTHX_ tsv, "%s(0x%"UVxf")", typestr, PTR2UV(sv)); |
a0d0e21e | 3146 | goto tokensaveref; |
463ee0b2 | 3147 | } |
cdb061a3 NC |
3148 | if (lp) |
3149 | *lp = strlen(typestr); | |
73d840c0 | 3150 | return (char *)typestr; |
79072805 | 3151 | } |
0336b60e | 3152 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 3153 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 3154 | report_uninit(sv); |
cdb061a3 NC |
3155 | if (lp) |
3156 | *lp = 0; | |
73d840c0 | 3157 | return (char *)""; |
79072805 | 3158 | } |
79072805 | 3159 | } |
28e5dec8 JH |
3160 | if (SvIOK(sv) || ((SvIOKp(sv) && !SvNOKp(sv)))) { |
3161 | /* I'm assuming that if both IV and NV are equally valid then | |
3162 | converting the IV is going to be more efficient */ | |
e1ec3a88 AL |
3163 | const U32 isIOK = SvIOK(sv); |
3164 | const U32 isUIOK = SvIsUV(sv); | |
28e5dec8 JH |
3165 | char buf[TYPE_CHARS(UV)]; |
3166 | char *ebuf, *ptr; | |
3167 | ||
3168 | if (SvTYPE(sv) < SVt_PVIV) | |
3169 | sv_upgrade(sv, SVt_PVIV); | |
3170 | if (isUIOK) | |
3171 | ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf); | |
3172 | else | |
3173 | ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf); | |
5902b6a9 NC |
3174 | /* inlined from sv_setpvn */ |
3175 | SvGROW_mutable(sv, (STRLEN)(ebuf - ptr + 1)); | |
4d84ee25 | 3176 | Move(ptr,SvPVX_mutable(sv),ebuf - ptr,char); |
28e5dec8 JH |
3177 | SvCUR_set(sv, ebuf - ptr); |
3178 | s = SvEND(sv); | |
3179 | *s = '\0'; | |
3180 | if (isIOK) | |
3181 | SvIOK_on(sv); | |
3182 | else | |
3183 | SvIOKp_on(sv); | |
3184 | if (isUIOK) | |
3185 | SvIsUV_on(sv); | |
3186 | } | |
3187 | else if (SvNOKp(sv)) { | |
79072805 LW |
3188 | if (SvTYPE(sv) < SVt_PVNV) |
3189 | sv_upgrade(sv, SVt_PVNV); | |
1c846c1f | 3190 | /* The +20 is pure guesswork. Configure test needed. --jhi */ |
5902b6a9 | 3191 | s = SvGROW_mutable(sv, NV_DIG + 20); |
79072805 | 3192 | olderrno = errno; /* some Xenix systems wipe out errno here */ |
79072805 | 3193 | #ifdef apollo |
463ee0b2 | 3194 | if (SvNVX(sv) == 0.0) |
79072805 LW |
3195 | (void)strcpy(s,"0"); |
3196 | else | |
3197 | #endif /*apollo*/ | |
bbce6d69 | 3198 | { |
2d4389e4 | 3199 | Gconvert(SvNVX(sv), NV_DIG, 0, s); |
bbce6d69 | 3200 | } |
79072805 | 3201 | errno = olderrno; |
a0d0e21e LW |
3202 | #ifdef FIXNEGATIVEZERO |
3203 | if (*s == '-' && s[1] == '0' && !s[2]) | |
3204 | strcpy(s,"0"); | |
3205 | #endif | |
79072805 LW |
3206 | while (*s) s++; |
3207 | #ifdef hcx | |
3208 | if (s[-1] == '.') | |
46fc3d4c | 3209 | *--s = '\0'; |
79072805 LW |
3210 | #endif |
3211 | } | |
79072805 | 3212 | else { |
041457d9 | 3213 | if (!PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP) && ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 3214 | report_uninit(sv); |
cdb061a3 | 3215 | if (lp) |
a0d0e21e | 3216 | *lp = 0; |
25da4f38 IZ |
3217 | if (SvTYPE(sv) < SVt_PV) |
3218 | /* Typically the caller expects that sv_any is not NULL now. */ | |
3219 | sv_upgrade(sv, SVt_PV); | |
73d840c0 | 3220 | return (char *)""; |
79072805 | 3221 | } |
cdb061a3 | 3222 | { |
823a54a3 | 3223 | const STRLEN len = s - SvPVX_const(sv); |
cdb061a3 NC |
3224 | if (lp) |
3225 | *lp = len; | |
3226 | SvCUR_set(sv, len); | |
3227 | } | |
79072805 | 3228 | SvPOK_on(sv); |
1d7c1841 | 3229 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
3f7c398e | 3230 | PTR2UV(sv),SvPVX_const(sv))); |
4d84ee25 NC |
3231 | if (flags & SV_CONST_RETURN) |
3232 | return (char *)SvPVX_const(sv); | |
10516c54 NC |
3233 | if (flags & SV_MUTABLE_RETURN) |
3234 | return SvPVX_mutable(sv); | |
463ee0b2 | 3235 | return SvPVX(sv); |
a0d0e21e LW |
3236 | |
3237 | tokensave: | |
8a9c777e NC |
3238 | len = strlen(tmpbuf); |
3239 | tokensave_has_len: | |
3240 | assert (!tsv); | |
a0d0e21e LW |
3241 | if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */ |
3242 | /* Sneaky stuff here */ | |
3243 | ||
3244 | tokensaveref: | |
46fc3d4c | 3245 | if (!tsv) |
8a9c777e | 3246 | tsv = newSVpvn(tmpbuf, len); |
46fc3d4c | 3247 | sv_2mortal(tsv); |
cdb061a3 NC |
3248 | if (lp) |
3249 | *lp = SvCUR(tsv); | |
46fc3d4c | 3250 | return SvPVX(tsv); |
a0d0e21e LW |
3251 | } |
3252 | else { | |
27da23d5 | 3253 | dVAR; |
8a9c777e | 3254 | |
a0d0e21e | 3255 | #ifdef FIXNEGATIVEZERO |
8a9c777e NC |
3256 | if (len == 2 && tmpbuf[0] == '-' && tmpbuf[1] == '0') { |
3257 | tmpbuf[0] = '0'; | |
3258 | tmpbuf[1] = 0; | |
46fc3d4c | 3259 | len = 1; |
3260 | } | |
a0d0e21e | 3261 | #endif |
862a34c6 | 3262 | SvUPGRADE(sv, SVt_PV); |
cdb061a3 NC |
3263 | if (lp) |
3264 | *lp = len; | |
5902b6a9 | 3265 | s = SvGROW_mutable(sv, len + 1); |
a0d0e21e | 3266 | SvCUR_set(sv, len); |
6bf554b4 | 3267 | SvPOKp_on(sv); |
8a9c777e | 3268 | return memcpy(s, tmpbuf, len + 1); |
a0d0e21e | 3269 | } |
463ee0b2 LW |
3270 | } |
3271 | ||
645c22ef | 3272 | /* |
6050d10e JP |
3273 | =for apidoc sv_copypv |
3274 | ||
3275 | Copies a stringified representation of the source SV into the | |
3276 | destination SV. Automatically performs any necessary mg_get and | |
54f0641b | 3277 | coercion of numeric values into strings. Guaranteed to preserve |
6050d10e | 3278 | UTF-8 flag even from overloaded objects. Similar in nature to |
54f0641b NIS |
3279 | sv_2pv[_flags] but operates directly on an SV instead of just the |
3280 | string. Mostly uses sv_2pv_flags to do its work, except when that | |
6050d10e JP |
3281 | would lose the UTF-8'ness of the PV. |
3282 | ||
3283 | =cut | |
3284 | */ | |
3285 | ||
3286 | void | |
3287 | Perl_sv_copypv(pTHX_ SV *dsv, register SV *ssv) | |
3288 | { | |
446eaa42 | 3289 | STRLEN len; |
53c1dcc0 | 3290 | const char * const s = SvPV_const(ssv,len); |
cb50f42d | 3291 | sv_setpvn(dsv,s,len); |
446eaa42 | 3292 | if (SvUTF8(ssv)) |
cb50f42d | 3293 | SvUTF8_on(dsv); |
446eaa42 | 3294 | else |
cb50f42d | 3295 | SvUTF8_off(dsv); |
6050d10e JP |
3296 | } |
3297 | ||
3298 | /* | |
645c22ef DM |
3299 | =for apidoc sv_2pvbyte |
3300 | ||
3301 | Return a pointer to the byte-encoded representation of the SV, and set *lp | |
1e54db1a | 3302 | to its length. May cause the SV to be downgraded from UTF-8 as a |
645c22ef DM |
3303 | side-effect. |
3304 | ||
3305 | Usually accessed via the C<SvPVbyte> macro. | |
3306 | ||
3307 | =cut | |
3308 | */ | |
3309 | ||
7340a771 GS |
3310 | char * |
3311 | Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp) | |
3312 | { | |
0875d2fe | 3313 | sv_utf8_downgrade(sv,0); |
97972285 | 3314 | return lp ? SvPV(sv,*lp) : SvPV_nolen(sv); |
7340a771 GS |
3315 | } |
3316 | ||
645c22ef | 3317 | /* |
7ee2227d SP |
3318 | * =for apidoc sv_2pvutf8 |
3319 | * | |
3320 | * Return a pointer to the UTF-8-encoded representation of the SV, and set *lp | |
3321 | * to its length. May cause the SV to be upgraded to UTF-8 as a side-effect. | |
3322 | * | |
3323 | * Usually accessed via the C<SvPVutf8> macro. | |
3324 | * | |
3325 | * =cut | |
3326 | * */ | |
645c22ef | 3327 | |
7340a771 GS |
3328 | char * |
3329 | Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp) | |
3330 | { | |
7ee2227d SP |
3331 | sv_utf8_upgrade(sv); |
3332 | return lp ? SvPV(sv,*lp) : SvPV_nolen(sv); | |
7340a771 | 3333 | } |
1c846c1f | 3334 | |
7ee2227d | 3335 | |
645c22ef DM |
3336 | /* |
3337 | =for apidoc sv_2bool | |
3338 | ||
3339 | This function is only called on magical items, and is only used by | |
8cf8f3d1 | 3340 | sv_true() or its macro equivalent. |
645c22ef DM |
3341 | |
3342 | =cut | |
3343 | */ | |
3344 | ||
463ee0b2 | 3345 | bool |
864dbfa3 | 3346 | Perl_sv_2bool(pTHX_ register SV *sv) |
463ee0b2 | 3347 | { |
5b295bef | 3348 | SvGETMAGIC(sv); |
463ee0b2 | 3349 | |
a0d0e21e LW |
3350 | if (!SvOK(sv)) |
3351 | return 0; | |
3352 | if (SvROK(sv)) { | |
a0d0e21e | 3353 | SV* tmpsv; |
1554e226 | 3354 | if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) && |
9e3013b1 | 3355 | (!SvROK(tmpsv) || (SvRV(tmpsv) != SvRV(sv)))) |
8a31060d | 3356 | return (bool)SvTRUE(tmpsv); |
a0d0e21e LW |
3357 | return SvRV(sv) != 0; |
3358 | } | |
463ee0b2 | 3359 | if (SvPOKp(sv)) { |
53c1dcc0 AL |
3360 | register XPV* const Xpvtmp = (XPV*)SvANY(sv); |
3361 | if (Xpvtmp && | |
339049b0 | 3362 | (*sv->sv_u.svu_pv > '0' || |
11343788 | 3363 | Xpvtmp->xpv_cur > 1 || |
339049b0 | 3364 | (Xpvtmp->xpv_cur && *sv->sv_u.svu_pv != '0'))) |
463ee0b2 LW |
3365 | return 1; |
3366 | else | |
3367 | return 0; | |
3368 | } | |
3369 | else { | |
3370 | if (SvIOKp(sv)) | |
3371 | return SvIVX(sv) != 0; | |
3372 | else { | |
3373 | if (SvNOKp(sv)) | |
3374 | return SvNVX(sv) != 0.0; | |
3375 | else | |
3376 | return FALSE; | |
3377 | } | |
3378 | } | |
79072805 LW |
3379 | } |
3380 | ||
c461cf8f JH |
3381 | /* |
3382 | =for apidoc sv_utf8_upgrade | |
3383 | ||
78ea37eb | 3384 | Converts the PV of an SV to its UTF-8-encoded form. |
645c22ef | 3385 | Forces the SV to string form if it is not already. |
4411f3b6 NIS |
3386 | Always sets the SvUTF8 flag to avoid future validity checks even |
3387 | if all the bytes have hibit clear. | |
c461cf8f | 3388 | |
13a6c0e0 JH |
3389 | This is not as a general purpose byte encoding to Unicode interface: |
3390 | use the Encode extension for that. | |
3391 | ||
8d6d96c1 HS |
3392 | =for apidoc sv_utf8_upgrade_flags |
3393 | ||
78ea37eb | 3394 | Converts the PV of an SV to its UTF-8-encoded form. |
645c22ef | 3395 | Forces the SV to string form if it is not already. |
8d6d96c1 HS |
3396 | Always sets the SvUTF8 flag to avoid future validity checks even |
3397 | if all the bytes have hibit clear. If C<flags> has C<SV_GMAGIC> bit set, | |
3398 | will C<mg_get> on C<sv> if appropriate, else not. C<sv_utf8_upgrade> and | |
3399 | C<sv_utf8_upgrade_nomg> are implemented in terms of this function. | |
3400 | ||
13a6c0e0 JH |
3401 | This is not as a general purpose byte encoding to Unicode interface: |
3402 | use the Encode extension for that. | |
3403 | ||
8d6d96c1 HS |
3404 | =cut |
3405 | */ | |
3406 | ||
3407 | STRLEN | |
3408 | Perl_sv_utf8_upgrade_flags(pTHX_ register SV *sv, I32 flags) | |
3409 | { | |
808c356f RGS |
3410 | if (sv == &PL_sv_undef) |
3411 | return 0; | |
e0e62c2a NIS |
3412 | if (!SvPOK(sv)) { |
3413 | STRLEN len = 0; | |
d52b7888 NC |
3414 | if (SvREADONLY(sv) && (SvPOKp(sv) || SvIOKp(sv) || SvNOKp(sv))) { |
3415 | (void) sv_2pv_flags(sv,&len, flags); | |
3416 | if (SvUTF8(sv)) | |
3417 | return len; | |
3418 | } else { | |
3419 | (void) SvPV_force(sv,len); | |
3420 | } | |
e0e62c2a | 3421 | } |
4411f3b6 | 3422 | |
f5cee72b | 3423 | if (SvUTF8(sv)) { |
5fec3b1d | 3424 | return SvCUR(sv); |
f5cee72b | 3425 | } |
5fec3b1d | 3426 | |
765f542d NC |
3427 | if (SvIsCOW(sv)) { |
3428 | sv_force_normal_flags(sv, 0); | |
db42d148 NIS |
3429 | } |
3430 | ||
88632417 | 3431 | if (PL_encoding && !(flags & SV_UTF8_NO_ENCODING)) |
799ef3cb | 3432 | sv_recode_to_utf8(sv, PL_encoding); |
9f4817db | 3433 | else { /* Assume Latin-1/EBCDIC */ |
c4e7c712 NC |
3434 | /* This function could be much more efficient if we |
3435 | * had a FLAG in SVs to signal if there are any hibit | |
3436 | * chars in the PV. Given that there isn't such a flag | |
3437 | * make the loop as fast as possible. */ | |
93524f2b | 3438 | const U8 *s = (U8 *) SvPVX_const(sv); |
c4420975 | 3439 | const U8 * const e = (U8 *) SvEND(sv); |
93524f2b | 3440 | const U8 *t = s; |
c4e7c712 NC |
3441 | int hibit = 0; |
3442 | ||
3443 | while (t < e) { | |
53c1dcc0 | 3444 | const U8 ch = *t++; |
c4e7c712 NC |
3445 | if ((hibit = !NATIVE_IS_INVARIANT(ch))) |
3446 | break; | |
3447 | } | |
3448 | if (hibit) { | |
3449 | STRLEN len = SvCUR(sv) + 1; /* Plus the \0 */ | |
53c1dcc0 | 3450 | U8 * const recoded = bytes_to_utf8((U8*)s, &len); |
c4e7c712 NC |
3451 | |
3452 | SvPV_free(sv); /* No longer using what was there before. */ | |
3453 | ||
1e2ebb21 | 3454 | SvPV_set(sv, (char*)recoded); |
c4e7c712 NC |
3455 | SvCUR_set(sv, len - 1); |
3456 | SvLEN_set(sv, len); /* No longer know the real size. */ | |
3457 | } | |
3458 | /* Mark as UTF-8 even if no hibit - saves scanning loop */ | |
3459 | SvUTF8_on(sv); | |
560a288e | 3460 | } |
4411f3b6 | 3461 | return SvCUR(sv); |
560a288e GS |
3462 | } |
3463 | ||
c461cf8f JH |
3464 | /* |
3465 | =for apidoc sv_utf8_downgrade | |
3466 | ||
78ea37eb TS |
3467 | Attempts to convert the PV of an SV from characters to bytes. |
3468 | If the PV contains a character beyond byte, this conversion will fail; | |
3469 | in this case, either returns false or, if C<fail_ok> is not | |
c461cf8f JH |
3470 | true, croaks. |
3471 | ||
13a6c0e0 JH |
3472 | This is not as a general purpose Unicode to byte encoding interface: |
3473 | use the Encode extension for that. | |
3474 | ||
c461cf8f JH |
3475 | =cut |
3476 | */ | |
3477 | ||
560a288e GS |
3478 | bool |
3479 | Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok) | |
3480 | { | |
78ea37eb | 3481 | if (SvPOKp(sv) && SvUTF8(sv)) { |
fa301091 | 3482 | if (SvCUR(sv)) { |
03cfe0ae | 3483 | U8 *s; |
652088fc | 3484 | STRLEN len; |
fa301091 | 3485 | |
765f542d NC |
3486 | if (SvIsCOW(sv)) { |
3487 | sv_force_normal_flags(sv, 0); | |
3488 | } | |
03cfe0ae NIS |
3489 | s = (U8 *) SvPV(sv, len); |
3490 | if (!utf8_to_bytes(s, &len)) { | |
fa301091 JH |
3491 | if (fail_ok) |
3492 | return FALSE; | |
3493 | else { | |
3494 | if (PL_op) | |
3495 | Perl_croak(aTHX_ "Wide character in %s", | |
53e06cf0 | 3496 | OP_DESC(PL_op)); |
fa301091 JH |
3497 | else |
3498 | Perl_croak(aTHX_ "Wide character"); | |
3499 | } | |
4b3603a4 | 3500 | } |
b162af07 | 3501 | SvCUR_set(sv, len); |
67e989fb | 3502 | } |
560a288e | 3503 | } |
ffebcc3e | 3504 | SvUTF8_off(sv); |
560a288e GS |
3505 | return TRUE; |
3506 | } | |
3507 | ||
c461cf8f JH |
3508 | /* |
3509 | =for apidoc sv_utf8_encode | |
3510 | ||
78ea37eb TS |
3511 | Converts the PV of an SV to UTF-8, but then turns the C<SvUTF8> |
3512 | flag off so that it looks like octets again. | |
c461cf8f JH |
3513 | |
3514 | =cut | |
3515 | */ | |
3516 | ||
560a288e GS |
3517 | void |
3518 | Perl_sv_utf8_encode(pTHX_ register SV *sv) | |
3519 | { | |
4411f3b6 | 3520 | (void) sv_utf8_upgrade(sv); |
4c94c214 NC |
3521 | if (SvIsCOW(sv)) { |
3522 | sv_force_normal_flags(sv, 0); | |
3523 | } | |
3524 | if (SvREADONLY(sv)) { | |
3525 | Perl_croak(aTHX_ PL_no_modify); | |
3526 | } | |
560a288e GS |
3527 | SvUTF8_off(sv); |
3528 | } | |
3529 | ||
4411f3b6 NIS |
3530 | /* |
3531 | =for apidoc sv_utf8_decode | |
3532 | ||
78ea37eb TS |
3533 | If the PV of the SV is an octet sequence in UTF-8 |
3534 | and contains a multiple-byte character, the C<SvUTF8> flag is turned on | |
3535 | so that it looks like a character. If the PV contains only single-byte | |
3536 | characters, the C<SvUTF8> flag stays being off. | |
3537 | Scans PV for validity and returns false if the PV is invalid UTF-8. | |
4411f3b6 NIS |
3538 | |
3539 | =cut | |
3540 | */ | |
3541 | ||
560a288e GS |
3542 | bool |
3543 | Perl_sv_utf8_decode(pTHX_ register SV *sv) | |
3544 | { | |
78ea37eb | 3545 | if (SvPOKp(sv)) { |
93524f2b NC |
3546 | const U8 *c; |
3547 | const U8 *e; | |
9cbac4c7 | 3548 | |
645c22ef DM |
3549 | /* The octets may have got themselves encoded - get them back as |
3550 | * bytes | |
3551 | */ | |
3552 | if (!sv_utf8_downgrade(sv, TRUE)) | |
560a288e GS |
3553 | return FALSE; |
3554 | ||
3555 | /* it is actually just a matter of turning the utf8 flag on, but | |
3556 | * we want to make sure everything inside is valid utf8 first. | |
3557 | */ | |
93524f2b | 3558 | c = (const U8 *) SvPVX_const(sv); |
63cd0674 | 3559 | if (!is_utf8_string(c, SvCUR(sv)+1)) |
67e989fb | 3560 | return FALSE; |
93524f2b | 3561 | e = (const U8 *) SvEND(sv); |
511c2ff0 | 3562 | while (c < e) { |
b64e5050 | 3563 | const U8 ch = *c++; |
c4d5f83a | 3564 | if (!UTF8_IS_INVARIANT(ch)) { |
67e989fb JH |
3565 | SvUTF8_on(sv); |
3566 | break; | |
3567 | } | |
560a288e | 3568 | } |
560a288e GS |
3569 | } |
3570 | return TRUE; | |
3571 | } | |
3572 | ||
954c1994 GS |
3573 | /* |
3574 | =for apidoc sv_setsv | |
3575 | ||
645c22ef DM |
3576 | Copies the contents of the source SV C<ssv> into the destination SV |
3577 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
3578 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
3579 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
3580 | content of the destination. | |
3581 | ||
3582 | You probably want to use one of the assortment of wrappers, such as | |
3583 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
3584 | C<SvSetMagicSV_nosteal>. | |
3585 | ||
8d6d96c1 HS |
3586 | =for apidoc sv_setsv_flags |
3587 | ||
645c22ef DM |
3588 | Copies the contents of the source SV C<ssv> into the destination SV |
3589 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
3590 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
3591 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
3592 | content of the destination. | |
3593 | If the C<flags> parameter has the C<SV_GMAGIC> bit set, will C<mg_get> on | |
5fcdf167 NC |
3594 | C<ssv> if appropriate, else not. If the C<flags> parameter has the |
3595 | C<NOSTEAL> bit set then the buffers of temps will not be stolen. <sv_setsv> | |
3596 | and C<sv_setsv_nomg> are implemented in terms of this function. | |
645c22ef DM |
3597 | |
3598 | You probably want to use one of the assortment of wrappers, such as | |
3599 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
3600 | C<SvSetMagicSV_nosteal>. | |
3601 | ||
3602 | This is the primary function for copying scalars, and most other | |
3603 | copy-ish functions and macros use this underneath. | |
8d6d96c1 HS |
3604 | |
3605 | =cut | |
3606 | */ | |
3607 | ||
3608 | void | |
3609 | Perl_sv_setsv_flags(pTHX_ SV *dstr, register SV *sstr, I32 flags) | |
3610 | { | |
8990e307 LW |
3611 | register U32 sflags; |
3612 | register int dtype; | |
3613 | register int stype; | |
463ee0b2 | 3614 | |
79072805 LW |
3615 | if (sstr == dstr) |
3616 | return; | |
765f542d | 3617 | SV_CHECK_THINKFIRST_COW_DROP(dstr); |
79072805 | 3618 | if (!sstr) |
3280af22 | 3619 | sstr = &PL_sv_undef; |
8990e307 LW |
3620 | stype = SvTYPE(sstr); |
3621 | dtype = SvTYPE(dstr); | |
79072805 | 3622 | |
a0d0e21e | 3623 | SvAMAGIC_off(dstr); |
7a5fa8a2 | 3624 | if ( SvVOK(dstr) ) |
ece467f9 JP |
3625 | { |
3626 | /* need to nuke the magic */ | |
3627 | mg_free(dstr); | |
3628 | SvRMAGICAL_off(dstr); | |
3629 | } | |
9e7bc3e8 | 3630 | |
463ee0b2 | 3631 | /* There's a lot of redundancy below but we're going for speed here */ |
79072805 | 3632 | |
8990e307 | 3633 | switch (stype) { |
79072805 | 3634 | case SVt_NULL: |
aece5585 | 3635 | undef_sstr: |
20408e3c GS |
3636 | if (dtype != SVt_PVGV) { |
3637 | (void)SvOK_off(dstr); | |
3638 | return; | |
3639 | } | |
3640 | break; | |
463ee0b2 | 3641 | case SVt_IV: |
aece5585 GA |
3642 | if (SvIOK(sstr)) { |
3643 | switch (dtype) { | |
3644 | case SVt_NULL: | |
8990e307 | 3645 | sv_upgrade(dstr, SVt_IV); |
aece5585 GA |
3646 | break; |
3647 | case SVt_NV: | |
8990e307 | 3648 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 GA |
3649 | break; |
3650 | case SVt_RV: | |
3651 | case SVt_PV: | |
a0d0e21e | 3652 | sv_upgrade(dstr, SVt_PVIV); |
aece5585 GA |
3653 | break; |
3654 | } | |
3655 | (void)SvIOK_only(dstr); | |
45977657 | 3656 | SvIV_set(dstr, SvIVX(sstr)); |
25da4f38 IZ |
3657 | if (SvIsUV(sstr)) |
3658 | SvIsUV_on(dstr); | |
27c9684d AP |
3659 | if (SvTAINTED(sstr)) |
3660 | SvTAINT(dstr); | |
aece5585 | 3661 | return; |
8990e307 | 3662 | } |
aece5585 GA |
3663 | goto undef_sstr; |
3664 | ||
463ee0b2 | 3665 | case SVt_NV: |
aece5585 GA |
3666 | if (SvNOK(sstr)) { |
3667 | switch (dtype) { | |
3668 | case SVt_NULL: | |
3669 | case SVt_IV: | |
8990e307 | 3670 | sv_upgrade(dstr, SVt_NV); |
aece5585 GA |
3671 | break; |
3672 | case SVt_RV: | |
3673 | case SVt_PV: | |
3674 | case SVt_PVIV: | |
a0d0e21e | 3675 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 GA |
3676 | break; |
3677 | } | |
9d6ce603 | 3678 | SvNV_set(dstr, SvNVX(sstr)); |
aece5585 | 3679 | (void)SvNOK_only(dstr); |
27c9684d AP |
3680 | if (SvTAINTED(sstr)) |
3681 | SvTAINT(dstr); | |
aece5585 | 3682 | return; |
8990e307 | 3683 | } |
aece5585 GA |
3684 | goto undef_sstr; |
3685 | ||
ed6116ce | 3686 | case SVt_RV: |
8990e307 | 3687 | if (dtype < SVt_RV) |
ed6116ce | 3688 | sv_upgrade(dstr, SVt_RV); |
c07a80fd | 3689 | else if (dtype == SVt_PVGV && |
23bb1b96 | 3690 | SvROK(sstr) && SvTYPE(SvRV(sstr)) == SVt_PVGV) { |
c07a80fd | 3691 | sstr = SvRV(sstr); |
a5f75d66 | 3692 | if (sstr == dstr) { |
1d7c1841 GS |
3693 | if (GvIMPORTED(dstr) != GVf_IMPORTED |
3694 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
3695 | { | |
a5f75d66 | 3696 | GvIMPORTED_on(dstr); |
1d7c1841 | 3697 | } |
a5f75d66 AD |
3698 | GvMULTI_on(dstr); |
3699 | return; | |
3700 | } | |
c07a80fd | 3701 | goto glob_assign; |
3702 | } | |
ed6116ce | 3703 | break; |
fc36a67e | 3704 | case SVt_PVFM: |
f8c7b90f | 3705 | #ifdef PERL_OLD_COPY_ON_WRITE |
d89fc664 NC |
3706 | if ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS) { |
3707 | if (dtype < SVt_PVIV) | |
3708 | sv_upgrade(dstr, SVt_PVIV); | |
3709 | break; | |
3710 | } | |
3711 | /* Fall through */ | |
3712 | #endif | |
3713 | case SVt_PV: | |
8990e307 | 3714 | if (dtype < SVt_PV) |
463ee0b2 | 3715 | sv_upgrade(dstr, SVt_PV); |
463ee0b2 LW |
3716 | break; |
3717 | case SVt_PVIV: | |
8990e307 | 3718 | if (dtype < SVt_PVIV) |
463ee0b2 | 3719 | sv_upgrade(dstr, SVt_PVIV); |
463ee0b2 LW |
3720 | break; |
3721 | case SVt_PVNV: | |
8990e307 | 3722 | if (dtype < SVt_PVNV) |
463ee0b2 | 3723 | sv_upgrade(dstr, SVt_PVNV); |
463ee0b2 | 3724 | break; |
4633a7c4 LW |
3725 | case SVt_PVAV: |
3726 | case SVt_PVHV: | |
3727 | case SVt_PVCV: | |
4633a7c4 | 3728 | case SVt_PVIO: |
a3b680e6 AL |
3729 | { |
3730 | const char * const type = sv_reftype(sstr,0); | |
533c011a | 3731 | if (PL_op) |
a3b680e6 | 3732 | Perl_croak(aTHX_ "Bizarre copy of %s in %s", type, OP_NAME(PL_op)); |
4633a7c4 | 3733 | else |
a3b680e6 AL |
3734 | Perl_croak(aTHX_ "Bizarre copy of %s", type); |
3735 | } | |
4633a7c4 LW |
3736 | break; |
3737 | ||
79072805 | 3738 | case SVt_PVGV: |
8990e307 | 3739 | if (dtype <= SVt_PVGV) { |
c07a80fd | 3740 | glob_assign: |
a5f75d66 | 3741 | if (dtype != SVt_PVGV) { |
a3b680e6 AL |
3742 | const char * const name = GvNAME(sstr); |
3743 | const STRLEN len = GvNAMELEN(sstr); | |
b76195c2 DM |
3744 | /* don't upgrade SVt_PVLV: it can hold a glob */ |
3745 | if (dtype != SVt_PVLV) | |
3746 | sv_upgrade(dstr, SVt_PVGV); | |
14befaf4 | 3747 | sv_magic(dstr, dstr, PERL_MAGIC_glob, Nullch, 0); |
e15faf7d NC |
3748 | GvSTASH(dstr) = GvSTASH(sstr); |
3749 | if (GvSTASH(dstr)) | |
3750 | Perl_sv_add_backref(aTHX_ (SV*)GvSTASH(dstr), dstr); | |
a0d0e21e LW |
3751 | GvNAME(dstr) = savepvn(name, len); |
3752 | GvNAMELEN(dstr) = len; | |
3753 | SvFAKE_on(dstr); /* can coerce to non-glob */ | |
3754 | } | |
5bd07a3d | 3755 | |
7fb37951 AMS |
3756 | #ifdef GV_UNIQUE_CHECK |
3757 | if (GvUNIQUE((GV*)dstr)) { | |
5bd07a3d DM |
3758 | Perl_croak(aTHX_ PL_no_modify); |
3759 | } | |
3760 | #endif | |
3761 | ||
a0d0e21e | 3762 | (void)SvOK_off(dstr); |
a5f75d66 | 3763 | GvINTRO_off(dstr); /* one-shot flag */ |
1edc1566 | 3764 | gp_free((GV*)dstr); |
79072805 | 3765 | GvGP(dstr) = gp_ref(GvGP(sstr)); |
27c9684d AP |
3766 | if (SvTAINTED(sstr)) |
3767 | SvTAINT(dstr); | |
1d7c1841 GS |
3768 | if (GvIMPORTED(dstr) != GVf_IMPORTED |
3769 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
3770 | { | |
a5f75d66 | 3771 | GvIMPORTED_on(dstr); |
1d7c1841 | 3772 | } |
a5f75d66 | 3773 | GvMULTI_on(dstr); |
79072805 LW |
3774 | return; |
3775 | } | |
3776 | /* FALL THROUGH */ | |
3777 | ||
3778 | default: | |
8d6d96c1 | 3779 | if (SvGMAGICAL(sstr) && (flags & SV_GMAGIC)) { |
973f89ab | 3780 | mg_get(sstr); |
eb160463 | 3781 | if ((int)SvTYPE(sstr) != stype) { |
973f89ab CS |
3782 | stype = SvTYPE(sstr); |
3783 | if (stype == SVt_PVGV && dtype <= SVt_PVGV) | |
3784 | goto glob_assign; | |
3785 | } | |
3786 | } | |
ded42b9f | 3787 | if (stype == SVt_PVLV) |
862a34c6 | 3788 | SvUPGRADE(dstr, SVt_PVNV); |
ded42b9f | 3789 | else |
862a34c6 | 3790 | SvUPGRADE(dstr, (U32)stype); |
79072805 LW |
3791 | } |
3792 | ||
8990e307 LW |
3793 | sflags = SvFLAGS(sstr); |
3794 | ||
3795 | if (sflags & SVf_ROK) { | |
3796 | if (dtype >= SVt_PV) { | |
3797 | if (dtype == SVt_PVGV) { | |
823a54a3 | 3798 | SV * const sref = SvREFCNT_inc(SvRV(sstr)); |
8990e307 | 3799 | SV *dref = 0; |
a3b680e6 | 3800 | const int intro = GvINTRO(dstr); |
a0d0e21e | 3801 | |
7fb37951 AMS |
3802 | #ifdef GV_UNIQUE_CHECK |
3803 | if (GvUNIQUE((GV*)dstr)) { | |
5bd07a3d DM |
3804 | Perl_croak(aTHX_ PL_no_modify); |
3805 | } | |
3806 | #endif | |
3807 | ||
a0d0e21e | 3808 | if (intro) { |
a5f75d66 | 3809 | GvINTRO_off(dstr); /* one-shot flag */ |
1d7c1841 | 3810 | GvLINE(dstr) = CopLINE(PL_curcop); |
1edc1566 | 3811 | GvEGV(dstr) = (GV*)dstr; |
a0d0e21e | 3812 | } |
a5f75d66 | 3813 | GvMULTI_on(dstr); |
8990e307 LW |
3814 | switch (SvTYPE(sref)) { |
3815 | case SVt_PVAV: | |
a0d0e21e | 3816 | if (intro) |
890ed176 | 3817 | SAVEGENERICSV(GvAV(dstr)); |
a0d0e21e LW |
3818 | else |
3819 | dref = (SV*)GvAV(dstr); | |
8990e307 | 3820 | GvAV(dstr) = (AV*)sref; |
39bac7f7 | 3821 | if (!GvIMPORTED_AV(dstr) |
1d7c1841 GS |
3822 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
3823 | { | |
a5f75d66 | 3824 | GvIMPORTED_AV_on(dstr); |
1d7c1841 | 3825 | } |
8990e307 LW |
3826 | break; |
3827 | case SVt_PVHV: | |
a0d0e21e | 3828 | if (intro) |
890ed176 | 3829 | SAVEGENERICSV(GvHV(dstr)); |
a0d0e21e LW |
3830 | else |
3831 | dref = (SV*)GvHV(dstr); | |
8990e307 | 3832 | GvHV(dstr) = (HV*)sref; |
39bac7f7 | 3833 | if (!GvIMPORTED_HV(dstr) |
1d7c1841 GS |
3834 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
3835 | { | |
a5f75d66 | 3836 | GvIMPORTED_HV_on(dstr); |
1d7c1841 | 3837 | } |
8990e307 LW |
3838 | break; |
3839 | case SVt_PVCV: | |
8ebc5c01 | 3840 | if (intro) { |
3841 | if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) { | |
3842 | SvREFCNT_dec(GvCV(dstr)); | |
3843 | GvCV(dstr) = Nullcv; | |
68dc0745 | 3844 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
3280af22 | 3845 | PL_sub_generation++; |
8ebc5c01 | 3846 | } |
890ed176 | 3847 | SAVEGENERICSV(GvCV(dstr)); |
8ebc5c01 | 3848 | } |
68dc0745 | 3849 | else |
3850 | dref = (SV*)GvCV(dstr); | |
3851 | if (GvCV(dstr) != (CV*)sref) { | |
823a54a3 | 3852 | CV* const cv = GvCV(dstr); |
4633a7c4 | 3853 | if (cv) { |
68dc0745 | 3854 | if (!GvCVGEN((GV*)dstr) && |
3855 | (CvROOT(cv) || CvXSUB(cv))) | |
3856 | { | |
beab0874 JT |
3857 | /* Redefining a sub - warning is mandatory if |
3858 | it was a const and its value changed. */ | |
3859 | if (ckWARN(WARN_REDEFINE) | |
3860 | || (CvCONST(cv) | |
3861 | && (!CvCONST((CV*)sref) | |
3862 | || sv_cmp(cv_const_sv(cv), | |
3863 | cv_const_sv((CV*)sref))))) | |
3864 | { | |
9014280d | 3865 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
beab0874 | 3866 | CvCONST(cv) |
910764e6 RGS |
3867 | ? "Constant subroutine %s::%s redefined" |
3868 | : "Subroutine %s::%s redefined", | |
bfcb3514 | 3869 | HvNAME_get(GvSTASH((GV*)dstr)), |
beab0874 JT |
3870 | GvENAME((GV*)dstr)); |
3871 | } | |
9607fc9c | 3872 | } |
fb24441d RGS |
3873 | if (!intro) |
3874 | cv_ckproto(cv, (GV*)dstr, | |
93524f2b NC |
3875 | SvPOK(sref) |
3876 | ? SvPVX_const(sref) : Nullch); | |
4633a7c4 | 3877 | } |
a5f75d66 | 3878 | GvCV(dstr) = (CV*)sref; |
7a4c00b4 | 3879 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
a5f75d66 | 3880 | GvASSUMECV_on(dstr); |
3280af22 | 3881 | PL_sub_generation++; |
a5f75d66 | 3882 | } |
39bac7f7 | 3883 | if (!GvIMPORTED_CV(dstr) |
1d7c1841 GS |
3884 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
3885 | { | |
a5f75d66 | 3886 | GvIMPORTED_CV_on(dstr); |
1d7c1841 | 3887 | } |
8990e307 | 3888 | break; |
91bba347 LW |
3889 | case SVt_PVIO: |
3890 | if (intro) | |
890ed176 | 3891 | SAVEGENERICSV(GvIOp(dstr)); |
91bba347 LW |
3892 | else |
3893 | dref = (SV*)GvIOp(dstr); | |
3894 | GvIOp(dstr) = (IO*)sref; | |
3895 | break; | |
f4d13ee9 JH |
3896 | case SVt_PVFM: |
3897 | if (intro) | |
890ed176 | 3898 | SAVEGENERICSV(GvFORM(dstr)); |
f4d13ee9 JH |
3899 | else |
3900 | dref = (SV*)GvFORM(dstr); | |
3901 | GvFORM(dstr) = (CV*)sref; | |
3902 | break; | |
8990e307 | 3903 | default: |
a0d0e21e | 3904 | if (intro) |
890ed176 | 3905 | SAVEGENERICSV(GvSV(dstr)); |
a0d0e21e LW |
3906 | else |
3907 | dref = (SV*)GvSV(dstr); | |
8990e307 | 3908 | GvSV(dstr) = sref; |
39bac7f7 | 3909 | if (!GvIMPORTED_SV(dstr) |
1d7c1841 GS |
3910 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
3911 | { | |
a5f75d66 | 3912 | GvIMPORTED_SV_on(dstr); |
1d7c1841 | 3913 | } |
8990e307 LW |
3914 | break; |
3915 | } | |
3916 | if (dref) | |
3917 | SvREFCNT_dec(dref); | |
27c9684d AP |
3918 | if (SvTAINTED(sstr)) |
3919 | SvTAINT(dstr); | |
8990e307 LW |
3920 | return; |
3921 | } | |
3f7c398e | 3922 | if (SvPVX_const(dstr)) { |
8bd4d4c5 | 3923 | SvPV_free(dstr); |
b162af07 SP |
3924 | SvLEN_set(dstr, 0); |
3925 | SvCUR_set(dstr, 0); | |
a0d0e21e | 3926 | } |
8990e307 | 3927 | } |
a0d0e21e | 3928 | (void)SvOK_off(dstr); |
b162af07 | 3929 | SvRV_set(dstr, SvREFCNT_inc(SvRV(sstr))); |
ed6116ce | 3930 | SvROK_on(dstr); |
8990e307 | 3931 | if (sflags & SVp_NOK) { |
3332b3c1 JH |
3932 | SvNOKp_on(dstr); |
3933 | /* Only set the public OK flag if the source has public OK. */ | |
3934 | if (sflags & SVf_NOK) | |
3935 | SvFLAGS(dstr) |= SVf_NOK; | |
9d6ce603 | 3936 | SvNV_set(dstr, SvNVX(sstr)); |
ed6116ce | 3937 | } |
8990e307 | 3938 | if (sflags & SVp_IOK) { |
3332b3c1 JH |
3939 | (void)SvIOKp_on(dstr); |
3940 | if (sflags & SVf_IOK) | |
3941 | SvFLAGS(dstr) |= SVf_IOK; | |
2b1c7e3e | 3942 | if (sflags & SVf_IVisUV) |
25da4f38 | 3943 | SvIsUV_on(dstr); |
45977657 | 3944 | SvIV_set(dstr, SvIVX(sstr)); |
ed6116ce | 3945 | } |
a0d0e21e LW |
3946 | if (SvAMAGIC(sstr)) { |
3947 | SvAMAGIC_on(dstr); | |
3948 | } | |
ed6116ce | 3949 | } |
8990e307 | 3950 | else if (sflags & SVp_POK) { |
765f542d | 3951 | bool isSwipe = 0; |
79072805 LW |
3952 | |
3953 | /* | |
3954 | * Check to see if we can just swipe the string. If so, it's a | |
3955 | * possible small lose on short strings, but a big win on long ones. | |
3f7c398e SP |
3956 | * It might even be a win on short strings if SvPVX_const(dstr) |
3957 | * has to be allocated and SvPVX_const(sstr) has to be freed. | |
79072805 LW |
3958 | */ |
3959 | ||
120fac95 NC |
3960 | /* Whichever path we take through the next code, we want this true, |
3961 | and doing it now facilitates the COW check. */ | |
3962 | (void)SvPOK_only(dstr); | |
3963 | ||
765f542d | 3964 | if ( |
b8f9541a NC |
3965 | /* We're not already COW */ |
3966 | ((sflags & (SVf_FAKE | SVf_READONLY)) != (SVf_FAKE | SVf_READONLY) | |
f8c7b90f | 3967 | #ifndef PERL_OLD_COPY_ON_WRITE |
b8f9541a NC |
3968 | /* or we are, but dstr isn't a suitable target. */ |
3969 | || (SvFLAGS(dstr) & CAN_COW_MASK) != CAN_COW_FLAGS | |
3970 | #endif | |
3971 | ) | |
765f542d | 3972 | && |
765f542d NC |
3973 | !(isSwipe = |
3974 | (sflags & SVs_TEMP) && /* slated for free anyway? */ | |
3975 | !(sflags & SVf_OOK) && /* and not involved in OOK hack? */ | |
5fcdf167 NC |
3976 | (!(flags & SV_NOSTEAL)) && |
3977 | /* and we're allowed to steal temps */ | |
765f542d NC |
3978 | SvREFCNT(sstr) == 1 && /* and no other references to it? */ |
3979 | SvLEN(sstr) && /* and really is a string */ | |
645c22ef | 3980 | /* and won't be needed again, potentially */ |
765f542d | 3981 | !(PL_op && PL_op->op_type == OP_AASSIGN)) |
f8c7b90f | 3982 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d | 3983 | && !((sflags & CAN_COW_MASK) == CAN_COW_FLAGS |
120fac95 | 3984 | && (SvFLAGS(dstr) & CAN_COW_MASK) == CAN_COW_FLAGS |
765f542d NC |
3985 | && SvTYPE(sstr) >= SVt_PVIV) |
3986 | #endif | |
3987 | ) { | |
3988 | /* Failed the swipe test, and it's not a shared hash key either. | |
3989 | Have to copy the string. */ | |
3990 | STRLEN len = SvCUR(sstr); | |
3991 | SvGROW(dstr, len + 1); /* inlined from sv_setpvn */ | |
3f7c398e | 3992 | Move(SvPVX_const(sstr),SvPVX(dstr),len,char); |
765f542d NC |
3993 | SvCUR_set(dstr, len); |
3994 | *SvEND(dstr) = '\0'; | |
765f542d | 3995 | } else { |
f8c7b90f | 3996 | /* If PERL_OLD_COPY_ON_WRITE is not defined, then isSwipe will always |
765f542d | 3997 | be true in here. */ |
765f542d NC |
3998 | /* Either it's a shared hash key, or it's suitable for |
3999 | copy-on-write or we can swipe the string. */ | |
46187eeb | 4000 | if (DEBUG_C_TEST) { |
ed252734 | 4001 | PerlIO_printf(Perl_debug_log, "Copy on write: sstr --> dstr\n"); |
e419cbc5 NC |
4002 | sv_dump(sstr); |
4003 | sv_dump(dstr); | |
46187eeb | 4004 | } |
f8c7b90f | 4005 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d NC |
4006 | if (!isSwipe) { |
4007 | /* I believe I should acquire a global SV mutex if | |
4008 | it's a COW sv (not a shared hash key) to stop | |
4009 | it going un copy-on-write. | |
4010 | If the source SV has gone un copy on write between up there | |
4011 | and down here, then (assert() that) it is of the correct | |
4012 | form to make it copy on write again */ | |
4013 | if ((sflags & (SVf_FAKE | SVf_READONLY)) | |
4014 | != (SVf_FAKE | SVf_READONLY)) { | |
4015 | SvREADONLY_on(sstr); | |
4016 | SvFAKE_on(sstr); | |
4017 | /* Make the source SV into a loop of 1. | |
4018 | (about to become 2) */ | |
a29f6d03 | 4019 | SV_COW_NEXT_SV_SET(sstr, sstr); |
765f542d NC |
4020 | } |
4021 | } | |
4022 | #endif | |
4023 | /* Initial code is common. */ | |
94010e71 NC |
4024 | if (SvPVX_const(dstr)) { /* we know that dtype >= SVt_PV */ |
4025 | SvPV_free(dstr); | |
79072805 | 4026 | } |
765f542d | 4027 | |
765f542d NC |
4028 | if (!isSwipe) { |
4029 | /* making another shared SV. */ | |
4030 | STRLEN cur = SvCUR(sstr); | |
4031 | STRLEN len = SvLEN(sstr); | |
f8c7b90f | 4032 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d | 4033 | if (len) { |
b8f9541a | 4034 | assert (SvTYPE(dstr) >= SVt_PVIV); |
765f542d NC |
4035 | /* SvIsCOW_normal */ |
4036 | /* splice us in between source and next-after-source. */ | |
a29f6d03 NC |
4037 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); |
4038 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
940132f3 | 4039 | SvPV_set(dstr, SvPVX_mutable(sstr)); |
a604c751 NC |
4040 | } else |
4041 | #endif | |
4042 | { | |
765f542d | 4043 | /* SvIsCOW_shared_hash */ |
46187eeb NC |
4044 | DEBUG_C(PerlIO_printf(Perl_debug_log, |
4045 | "Copy on write: Sharing hash\n")); | |
b8f9541a | 4046 | |
bdd68bc3 | 4047 | assert (SvTYPE(dstr) >= SVt_PV); |
765f542d | 4048 | SvPV_set(dstr, |
d1db91c6 | 4049 | HEK_KEY(share_hek_hek(SvSHARED_HEK_FROM_PV(SvPVX_const(sstr))))); |
bdd68bc3 | 4050 | } |
87a1ef3d SP |
4051 | SvLEN_set(dstr, len); |
4052 | SvCUR_set(dstr, cur); | |
765f542d NC |
4053 | SvREADONLY_on(dstr); |
4054 | SvFAKE_on(dstr); | |
4055 | /* Relesase a global SV mutex. */ | |
4056 | } | |
4057 | else | |
765f542d | 4058 | { /* Passes the swipe test. */ |
78d1e721 | 4059 | SvPV_set(dstr, SvPVX_mutable(sstr)); |
765f542d NC |
4060 | SvLEN_set(dstr, SvLEN(sstr)); |
4061 | SvCUR_set(dstr, SvCUR(sstr)); | |
4062 | ||
4063 | SvTEMP_off(dstr); | |
4064 | (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */ | |
4065 | SvPV_set(sstr, Nullch); | |
4066 | SvLEN_set(sstr, 0); | |
4067 | SvCUR_set(sstr, 0); | |
4068 | SvTEMP_off(sstr); | |
4069 | } | |
4070 | } | |
9aa983d2 | 4071 | if (sflags & SVf_UTF8) |
a7cb1f99 | 4072 | SvUTF8_on(dstr); |
8990e307 | 4073 | if (sflags & SVp_NOK) { |
3332b3c1 JH |
4074 | SvNOKp_on(dstr); |
4075 | if (sflags & SVf_NOK) | |
4076 | SvFLAGS(dstr) |= SVf_NOK; | |
9d6ce603 | 4077 | SvNV_set(dstr, SvNVX(sstr)); |
79072805 | 4078 | } |
8990e307 | 4079 | if (sflags & SVp_IOK) { |
3332b3c1 JH |
4080 | (void)SvIOKp_on(dstr); |
4081 | if (sflags & SVf_IOK) | |
4082 | SvFLAGS(dstr) |= SVf_IOK; | |
2b1c7e3e | 4083 | if (sflags & SVf_IVisUV) |
25da4f38 | 4084 | SvIsUV_on(dstr); |
45977657 | 4085 | SvIV_set(dstr, SvIVX(sstr)); |
79072805 | 4086 | } |
92f0c265 | 4087 | if (SvVOK(sstr)) { |
7a5fa8a2 | 4088 | MAGIC *smg = mg_find(sstr,PERL_MAGIC_vstring); |
ece467f9 JP |
4089 | sv_magic(dstr, NULL, PERL_MAGIC_vstring, |
4090 | smg->mg_ptr, smg->mg_len); | |
439cb1c4 | 4091 | SvRMAGICAL_on(dstr); |
7a5fa8a2 | 4092 | } |
79072805 | 4093 | } |
8990e307 | 4094 | else if (sflags & SVp_IOK) { |
3332b3c1 JH |
4095 | if (sflags & SVf_IOK) |
4096 | (void)SvIOK_only(dstr); | |
4097 | else { | |
9cbac4c7 DM |
4098 | (void)SvOK_off(dstr); |
4099 | (void)SvIOKp_on(dstr); | |
3332b3c1 JH |
4100 | } |
4101 | /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */ | |
2b1c7e3e | 4102 | if (sflags & SVf_IVisUV) |
25da4f38 | 4103 | SvIsUV_on(dstr); |
45977657 | 4104 | SvIV_set(dstr, SvIVX(sstr)); |
3332b3c1 JH |
4105 | if (sflags & SVp_NOK) { |
4106 | if (sflags & SVf_NOK) | |
4107 | (void)SvNOK_on(dstr); | |
4108 | else | |
4109 | (void)SvNOKp_on(dstr); | |
9d6ce603 | 4110 | SvNV_set(dstr, SvNVX(sstr)); |
3332b3c1 JH |
4111 | } |
4112 | } | |
4113 | else if (sflags & SVp_NOK) { | |
4114 | if (sflags & SVf_NOK) | |
4115 | (void)SvNOK_only(dstr); | |
4116 | else { | |
9cbac4c7 | 4117 | (void)SvOK_off(dstr); |
3332b3c1 JH |
4118 | SvNOKp_on(dstr); |
4119 | } | |
9d6ce603 | 4120 | SvNV_set(dstr, SvNVX(sstr)); |
79072805 LW |
4121 | } |
4122 | else { | |
20408e3c | 4123 | if (dtype == SVt_PVGV) { |
e476b1b5 | 4124 | if (ckWARN(WARN_MISC)) |
9014280d | 4125 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Undefined value assigned to typeglob"); |
20408e3c GS |
4126 | } |
4127 | else | |
4128 | (void)SvOK_off(dstr); | |
a0d0e21e | 4129 | } |
27c9684d AP |
4130 | if (SvTAINTED(sstr)) |
4131 | SvTAINT(dstr); | |
79072805 LW |
4132 | } |
4133 | ||
954c1994 GS |
4134 | /* |
4135 | =for apidoc sv_setsv_mg | |
4136 | ||
4137 | Like C<sv_setsv>, but also handles 'set' magic. | |
4138 | ||
4139 | =cut | |
4140 | */ | |
4141 | ||
79072805 | 4142 | void |
864dbfa3 | 4143 | Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr) |
ef50df4b GS |
4144 | { |
4145 | sv_setsv(dstr,sstr); | |
4146 | SvSETMAGIC(dstr); | |
4147 | } | |
4148 | ||
f8c7b90f | 4149 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
4150 | SV * |
4151 | Perl_sv_setsv_cow(pTHX_ SV *dstr, SV *sstr) | |
4152 | { | |
4153 | STRLEN cur = SvCUR(sstr); | |
4154 | STRLEN len = SvLEN(sstr); | |
4155 | register char *new_pv; | |
4156 | ||
4157 | if (DEBUG_C_TEST) { | |
4158 | PerlIO_printf(Perl_debug_log, "Fast copy on write: %p -> %p\n", | |
4159 | sstr, dstr); | |
4160 | sv_dump(sstr); | |
4161 | if (dstr) | |
4162 | sv_dump(dstr); | |
4163 | } | |
4164 | ||
4165 | if (dstr) { | |
4166 | if (SvTHINKFIRST(dstr)) | |
4167 | sv_force_normal_flags(dstr, SV_COW_DROP_PV); | |
3f7c398e SP |
4168 | else if (SvPVX_const(dstr)) |
4169 | Safefree(SvPVX_const(dstr)); | |
ed252734 NC |
4170 | } |
4171 | else | |
4172 | new_SV(dstr); | |
862a34c6 | 4173 | SvUPGRADE(dstr, SVt_PVIV); |
ed252734 NC |
4174 | |
4175 | assert (SvPOK(sstr)); | |
4176 | assert (SvPOKp(sstr)); | |
4177 | assert (!SvIOK(sstr)); | |
4178 | assert (!SvIOKp(sstr)); | |
4179 | assert (!SvNOK(sstr)); | |
4180 | assert (!SvNOKp(sstr)); | |
4181 | ||
4182 | if (SvIsCOW(sstr)) { | |
4183 | ||
4184 | if (SvLEN(sstr) == 0) { | |
4185 | /* source is a COW shared hash key. */ | |
ed252734 NC |
4186 | DEBUG_C(PerlIO_printf(Perl_debug_log, |
4187 | "Fast copy on write: Sharing hash\n")); | |
d1db91c6 | 4188 | new_pv = HEK_KEY(share_hek_hek(SvSHARED_HEK_FROM_PV(SvPVX_const(sstr)))); |
ed252734 NC |
4189 | goto common_exit; |
4190 | } | |
4191 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); | |
4192 | } else { | |
4193 | assert ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS); | |
862a34c6 | 4194 | SvUPGRADE(sstr, SVt_PVIV); |
ed252734 NC |
4195 | SvREADONLY_on(sstr); |
4196 | SvFAKE_on(sstr); | |
4197 | DEBUG_C(PerlIO_printf(Perl_debug_log, | |
4198 | "Fast copy on write: Converting sstr to COW\n")); | |
4199 | SV_COW_NEXT_SV_SET(dstr, sstr); | |
4200 | } | |
4201 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
940132f3 | 4202 | new_pv = SvPVX_mutable(sstr); |
ed252734 NC |
4203 | |
4204 | common_exit: | |
4205 | SvPV_set(dstr, new_pv); | |
4206 | SvFLAGS(dstr) = (SVt_PVIV|SVf_POK|SVp_POK|SVf_FAKE|SVf_READONLY); | |
4207 | if (SvUTF8(sstr)) | |
4208 | SvUTF8_on(dstr); | |
87a1ef3d SP |
4209 | SvLEN_set(dstr, len); |
4210 | SvCUR_set(dstr, cur); | |
ed252734 NC |
4211 | if (DEBUG_C_TEST) { |
4212 | sv_dump(dstr); | |
4213 | } | |
4214 | return dstr; | |
4215 | } | |
4216 | #endif | |
4217 | ||
954c1994 GS |
4218 | /* |
4219 | =for apidoc sv_setpvn | |
4220 | ||
4221 | Copies a string into an SV. The C<len> parameter indicates the number of | |
9e09f5f2 MHM |
4222 | bytes to be copied. If the C<ptr> argument is NULL the SV will become |
4223 | undefined. Does not handle 'set' magic. See C<sv_setpvn_mg>. | |
954c1994 GS |
4224 | |
4225 | =cut | |
4226 | */ | |
4227 | ||
ef50df4b | 4228 | void |
864dbfa3 | 4229 | Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
79072805 | 4230 | { |
c6f8c383 | 4231 | register char *dptr; |
22c522df | 4232 | |
765f542d | 4233 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 4234 | if (!ptr) { |
a0d0e21e | 4235 | (void)SvOK_off(sv); |
463ee0b2 LW |
4236 | return; |
4237 | } | |
22c522df JH |
4238 | else { |
4239 | /* len is STRLEN which is unsigned, need to copy to signed */ | |
a3b680e6 | 4240 | const IV iv = len; |
9c5ffd7c JH |
4241 | if (iv < 0) |
4242 | Perl_croak(aTHX_ "panic: sv_setpvn called with negative strlen"); | |
22c522df | 4243 | } |
862a34c6 | 4244 | SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 4245 | |
5902b6a9 | 4246 | dptr = SvGROW(sv, len + 1); |
c6f8c383 GA |
4247 | Move(ptr,dptr,len,char); |
4248 | dptr[len] = '\0'; | |
79072805 | 4249 | SvCUR_set(sv, len); |
1aa99e6b | 4250 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4251 | SvTAINT(sv); |
79072805 LW |
4252 | } |
4253 | ||
954c1994 GS |
4254 | /* |
4255 | =for apidoc sv_setpvn_mg | |
4256 | ||
4257 | Like C<sv_setpvn>, but also handles 'set' magic. | |
4258 | ||
4259 | =cut | |
4260 | */ | |
4261 | ||
79072805 | 4262 | void |
864dbfa3 | 4263 | Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
ef50df4b GS |
4264 | { |
4265 | sv_setpvn(sv,ptr,len); | |
4266 | SvSETMAGIC(sv); | |
4267 | } | |
4268 | ||
954c1994 GS |
4269 | /* |
4270 | =for apidoc sv_setpv | |
4271 | ||
4272 | Copies a string into an SV. The string must be null-terminated. Does not | |
4273 | handle 'set' magic. See C<sv_setpv_mg>. | |
4274 | ||
4275 | =cut | |
4276 | */ | |
4277 | ||
ef50df4b | 4278 | void |
864dbfa3 | 4279 | Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
4280 | { |
4281 | register STRLEN len; | |
4282 | ||
765f542d | 4283 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 4284 | if (!ptr) { |
a0d0e21e | 4285 | (void)SvOK_off(sv); |
463ee0b2 LW |
4286 | return; |
4287 | } | |
79072805 | 4288 | len = strlen(ptr); |
862a34c6 | 4289 | SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 4290 | |
79072805 | 4291 | SvGROW(sv, len + 1); |
463ee0b2 | 4292 | Move(ptr,SvPVX(sv),len+1,char); |
79072805 | 4293 | SvCUR_set(sv, len); |
1aa99e6b | 4294 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 LW |
4295 | SvTAINT(sv); |
4296 | } | |
4297 | ||
954c1994 GS |
4298 | /* |
4299 | =for apidoc sv_setpv_mg | |
4300 | ||
4301 | Like C<sv_setpv>, but also handles 'set' magic. | |
4302 | ||
4303 | =cut | |
4304 | */ | |
4305 | ||
463ee0b2 | 4306 | void |
864dbfa3 | 4307 | Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b GS |
4308 | { |
4309 | sv_setpv(sv,ptr); | |
4310 | SvSETMAGIC(sv); | |
4311 | } | |
4312 | ||
954c1994 GS |
4313 | /* |
4314 | =for apidoc sv_usepvn | |
4315 | ||
4316 | Tells an SV to use C<ptr> to find its string value. Normally the string is | |
1c846c1f | 4317 | stored inside the SV but sv_usepvn allows the SV to use an outside string. |
954c1994 GS |
4318 | The C<ptr> should point to memory that was allocated by C<malloc>. The |
4319 | string length, C<len>, must be supplied. This function will realloc the | |
4320 | memory pointed to by C<ptr>, so that pointer should not be freed or used by | |
4321 | the programmer after giving it to sv_usepvn. Does not handle 'set' magic. | |
4322 | See C<sv_usepvn_mg>. | |
4323 | ||
4324 | =cut | |
4325 | */ | |
4326 | ||
ef50df4b | 4327 | void |
864dbfa3 | 4328 | Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len) |
463ee0b2 | 4329 | { |
1936d2a7 | 4330 | STRLEN allocate; |
765f542d | 4331 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
862a34c6 | 4332 | SvUPGRADE(sv, SVt_PV); |
463ee0b2 | 4333 | if (!ptr) { |
a0d0e21e | 4334 | (void)SvOK_off(sv); |
463ee0b2 LW |
4335 | return; |
4336 | } | |
3f7c398e | 4337 | if (SvPVX_const(sv)) |
8bd4d4c5 | 4338 | SvPV_free(sv); |
1936d2a7 NC |
4339 | |
4340 | allocate = PERL_STRLEN_ROUNDUP(len + 1); | |
7a9b70e9 | 4341 | ptr = saferealloc (ptr, allocate); |
f880fe2f | 4342 | SvPV_set(sv, ptr); |
463ee0b2 | 4343 | SvCUR_set(sv, len); |
1936d2a7 | 4344 | SvLEN_set(sv, allocate); |
463ee0b2 | 4345 | *SvEND(sv) = '\0'; |
1aa99e6b | 4346 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4347 | SvTAINT(sv); |
79072805 LW |
4348 | } |
4349 | ||
954c1994 GS |
4350 | /* |
4351 | =for apidoc sv_usepvn_mg | |
4352 | ||
4353 | Like C<sv_usepvn>, but also handles 'set' magic. | |
4354 | ||
4355 | =cut | |
4356 | */ | |
4357 | ||
ef50df4b | 4358 | void |
864dbfa3 | 4359 | Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len) |
ef50df4b | 4360 | { |
51c1089b | 4361 | sv_usepvn(sv,ptr,len); |
ef50df4b GS |
4362 | SvSETMAGIC(sv); |
4363 | } | |
4364 | ||
f8c7b90f | 4365 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d NC |
4366 | /* Need to do this *after* making the SV normal, as we need the buffer |
4367 | pointer to remain valid until after we've copied it. If we let go too early, | |
4368 | another thread could invalidate it by unsharing last of the same hash key | |
4369 | (which it can do by means other than releasing copy-on-write Svs) | |
4370 | or by changing the other copy-on-write SVs in the loop. */ | |
4371 | STATIC void | |
bdd68bc3 | 4372 | S_sv_release_COW(pTHX_ register SV *sv, const char *pvx, STRLEN len, SV *after) |
765f542d NC |
4373 | { |
4374 | if (len) { /* this SV was SvIsCOW_normal(sv) */ | |
4375 | /* we need to find the SV pointing to us. */ | |
aec46f14 | 4376 | SV * const current = SV_COW_NEXT_SV(after); |
7a5fa8a2 | 4377 | |
765f542d NC |
4378 | if (current == sv) { |
4379 | /* The SV we point to points back to us (there were only two of us | |
4380 | in the loop.) | |
4381 | Hence other SV is no longer copy on write either. */ | |
4382 | SvFAKE_off(after); | |
4383 | SvREADONLY_off(after); | |
4384 | } else { | |
4385 | /* We need to follow the pointers around the loop. */ | |
4386 | SV *next; | |
4387 | while ((next = SV_COW_NEXT_SV(current)) != sv) { | |
4388 | assert (next); | |
4389 | current = next; | |
4390 | /* don't loop forever if the structure is bust, and we have | |
4391 | a pointer into a closed loop. */ | |
4392 | assert (current != after); | |
3f7c398e | 4393 | assert (SvPVX_const(current) == pvx); |
765f542d NC |
4394 | } |
4395 | /* Make the SV before us point to the SV after us. */ | |
a29f6d03 | 4396 | SV_COW_NEXT_SV_SET(current, after); |
765f542d NC |
4397 | } |
4398 | } else { | |
bdd68bc3 | 4399 | unshare_hek(SvSHARED_HEK_FROM_PV(pvx)); |
765f542d NC |
4400 | } |
4401 | } | |
4402 | ||
4403 | int | |
4404 | Perl_sv_release_IVX(pTHX_ register SV *sv) | |
4405 | { | |
4406 | if (SvIsCOW(sv)) | |
4407 | sv_force_normal_flags(sv, 0); | |
0c34ef67 MHM |
4408 | SvOOK_off(sv); |
4409 | return 0; | |
765f542d NC |
4410 | } |
4411 | #endif | |
645c22ef DM |
4412 | /* |
4413 | =for apidoc sv_force_normal_flags | |
4414 | ||
4415 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
4416 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
765f542d NC |
4417 | an xpvmg; if we're a copy-on-write scalar, this is the on-write time when |
4418 | we do the copy, and is also used locally. If C<SV_COW_DROP_PV> is set | |
4419 | then a copy-on-write scalar drops its PV buffer (if any) and becomes | |
4420 | SvPOK_off rather than making a copy. (Used where this scalar is about to be | |
d3050d9d | 4421 | set to some other value.) In addition, the C<flags> parameter gets passed to |
765f542d NC |
4422 | C<sv_unref_flags()> when unrefing. C<sv_force_normal> calls this function |
4423 | with flags set to 0. | |
645c22ef DM |
4424 | |
4425 | =cut | |
4426 | */ | |
4427 | ||
6fc92669 | 4428 | void |
840a7b70 | 4429 | Perl_sv_force_normal_flags(pTHX_ register SV *sv, U32 flags) |
0f15f207 | 4430 | { |
f8c7b90f | 4431 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d NC |
4432 | if (SvREADONLY(sv)) { |
4433 | /* At this point I believe I should acquire a global SV mutex. */ | |
4434 | if (SvFAKE(sv)) { | |
b64e5050 | 4435 | const char * const pvx = SvPVX_const(sv); |
a28509cc AL |
4436 | const STRLEN len = SvLEN(sv); |
4437 | const STRLEN cur = SvCUR(sv); | |
a28509cc | 4438 | SV * const next = SV_COW_NEXT_SV(sv); /* next COW sv in the loop. */ |
46187eeb NC |
4439 | if (DEBUG_C_TEST) { |
4440 | PerlIO_printf(Perl_debug_log, | |
4441 | "Copy on write: Force normal %ld\n", | |
4442 | (long) flags); | |
e419cbc5 | 4443 | sv_dump(sv); |
46187eeb | 4444 | } |
765f542d NC |
4445 | SvFAKE_off(sv); |
4446 | SvREADONLY_off(sv); | |
9f653bb5 | 4447 | /* This SV doesn't own the buffer, so need to Newx() a new one: */ |
f880fe2f | 4448 | SvPV_set(sv, (char*)0); |
87a1ef3d | 4449 | SvLEN_set(sv, 0); |
765f542d NC |
4450 | if (flags & SV_COW_DROP_PV) { |
4451 | /* OK, so we don't need to copy our buffer. */ | |
4452 | SvPOK_off(sv); | |
4453 | } else { | |
4454 | SvGROW(sv, cur + 1); | |
4455 | Move(pvx,SvPVX(sv),cur,char); | |
87a1ef3d | 4456 | SvCUR_set(sv, cur); |
765f542d NC |
4457 | *SvEND(sv) = '\0'; |
4458 | } | |
bdd68bc3 | 4459 | sv_release_COW(sv, pvx, len, next); |
46187eeb | 4460 | if (DEBUG_C_TEST) { |
e419cbc5 | 4461 | sv_dump(sv); |
46187eeb | 4462 | } |
765f542d | 4463 | } |
923e4eb5 | 4464 | else if (IN_PERL_RUNTIME) |
765f542d NC |
4465 | Perl_croak(aTHX_ PL_no_modify); |
4466 | /* At this point I believe that I can drop the global SV mutex. */ | |
4467 | } | |
4468 | #else | |
2213622d | 4469 | if (SvREADONLY(sv)) { |
1c846c1f | 4470 | if (SvFAKE(sv)) { |
b64e5050 | 4471 | const char * const pvx = SvPVX_const(sv); |
66a1b24b | 4472 | const STRLEN len = SvCUR(sv); |
10bcdfd6 NC |
4473 | SvFAKE_off(sv); |
4474 | SvREADONLY_off(sv); | |
66a1b24b AL |
4475 | SvPV_set(sv, Nullch); |
4476 | SvLEN_set(sv, 0); | |
1c846c1f | 4477 | SvGROW(sv, len + 1); |
706aa1c9 | 4478 | Move(pvx,SvPVX(sv),len,char); |
1c846c1f | 4479 | *SvEND(sv) = '\0'; |
bdd68bc3 | 4480 | unshare_hek(SvSHARED_HEK_FROM_PV(pvx)); |
1c846c1f | 4481 | } |
923e4eb5 | 4482 | else if (IN_PERL_RUNTIME) |
cea2e8a9 | 4483 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 4484 | } |
765f542d | 4485 | #endif |
2213622d | 4486 | if (SvROK(sv)) |
840a7b70 | 4487 | sv_unref_flags(sv, flags); |
6fc92669 GS |
4488 | else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) |
4489 | sv_unglob(sv); | |
0f15f207 | 4490 | } |
1c846c1f | 4491 | |
645c22ef | 4492 | /* |
954c1994 GS |
4493 | =for apidoc sv_chop |
4494 | ||
1c846c1f | 4495 | Efficient removal of characters from the beginning of the string buffer. |
954c1994 GS |
4496 | SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside |
4497 | the string buffer. The C<ptr> becomes the first character of the adjusted | |
645c22ef | 4498 | string. Uses the "OOK hack". |
3f7c398e | 4499 | Beware: after this function returns, C<ptr> and SvPVX_const(sv) may no longer |
31869a79 | 4500 | refer to the same chunk of data. |
954c1994 GS |
4501 | |
4502 | =cut | |
4503 | */ | |
4504 | ||
79072805 | 4505 | void |
f54cb97a | 4506 | Perl_sv_chop(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
4507 | { |
4508 | register STRLEN delta; | |
a0d0e21e | 4509 | if (!ptr || !SvPOKp(sv)) |
79072805 | 4510 | return; |
3f7c398e | 4511 | delta = ptr - SvPVX_const(sv); |
2213622d | 4512 | SV_CHECK_THINKFIRST(sv); |
79072805 LW |
4513 | if (SvTYPE(sv) < SVt_PVIV) |
4514 | sv_upgrade(sv,SVt_PVIV); | |
4515 | ||
4516 | if (!SvOOK(sv)) { | |
50483b2c | 4517 | if (!SvLEN(sv)) { /* make copy of shared string */ |
3f7c398e | 4518 | const char *pvx = SvPVX_const(sv); |
a28509cc | 4519 | const STRLEN len = SvCUR(sv); |
50483b2c | 4520 | SvGROW(sv, len + 1); |
706aa1c9 | 4521 | Move(pvx,SvPVX(sv),len,char); |
50483b2c JD |
4522 | *SvEND(sv) = '\0'; |
4523 | } | |
45977657 | 4524 | SvIV_set(sv, 0); |
a4bfb290 AB |
4525 | /* Same SvOOK_on but SvOOK_on does a SvIOK_off |
4526 | and we do that anyway inside the SvNIOK_off | |
4527 | */ | |
7a5fa8a2 | 4528 | SvFLAGS(sv) |= SVf_OOK; |
79072805 | 4529 | } |
a4bfb290 | 4530 | SvNIOK_off(sv); |
b162af07 SP |
4531 | SvLEN_set(sv, SvLEN(sv) - delta); |
4532 | SvCUR_set(sv, SvCUR(sv) - delta); | |
f880fe2f | 4533 | SvPV_set(sv, SvPVX(sv) + delta); |
45977657 | 4534 | SvIV_set(sv, SvIVX(sv) + delta); |
79072805 LW |
4535 | } |
4536 | ||
954c1994 GS |
4537 | /* |
4538 | =for apidoc sv_catpvn | |
4539 | ||
4540 | Concatenates the string onto the end of the string which is in the SV. The | |
1e54db1a JH |
4541 | C<len> indicates number of bytes to copy. If the SV has the UTF-8 |
4542 | status set, then the bytes appended should be valid UTF-8. | |
d5ce4a7c | 4543 | Handles 'get' magic, but not 'set' magic. See C<sv_catpvn_mg>. |
954c1994 | 4544 | |
8d6d96c1 HS |
4545 | =for apidoc sv_catpvn_flags |
4546 | ||
4547 | Concatenates the string onto the end of the string which is in the SV. The | |
1e54db1a JH |
4548 | C<len> indicates number of bytes to copy. If the SV has the UTF-8 |
4549 | status set, then the bytes appended should be valid UTF-8. | |
8d6d96c1 HS |
4550 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<dsv> if |
4551 | appropriate, else not. C<sv_catpvn> and C<sv_catpvn_nomg> are implemented | |
4552 | in terms of this function. | |
4553 | ||
4554 | =cut | |
4555 | */ | |
4556 | ||
4557 | void | |
4558 | Perl_sv_catpvn_flags(pTHX_ register SV *dsv, register const char *sstr, register STRLEN slen, I32 flags) | |
4559 | { | |
4560 | STRLEN dlen; | |
f54cb97a | 4561 | const char *dstr = SvPV_force_flags(dsv, dlen, flags); |
8d6d96c1 | 4562 | |
8d6d96c1 HS |
4563 | SvGROW(dsv, dlen + slen + 1); |
4564 | if (sstr == dstr) | |
3f7c398e | 4565 | sstr = SvPVX_const(dsv); |
8d6d96c1 | 4566 | Move(sstr, SvPVX(dsv) + dlen, slen, char); |
b162af07 | 4567 | SvCUR_set(dsv, SvCUR(dsv) + slen); |
8d6d96c1 HS |
4568 | *SvEND(dsv) = '\0'; |
4569 | (void)SvPOK_only_UTF8(dsv); /* validate pointer */ | |
4570 | SvTAINT(dsv); | |
bddd5118 NC |
4571 | if (flags & SV_SMAGIC) |
4572 | SvSETMAGIC(dsv); | |
79072805 LW |
4573 | } |
4574 | ||
954c1994 | 4575 | /* |
954c1994 GS |
4576 | =for apidoc sv_catsv |
4577 | ||
13e8c8e3 JH |
4578 | Concatenates the string from SV C<ssv> onto the end of the string in |
4579 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. Handles 'get' magic, but | |
4580 | not 'set' magic. See C<sv_catsv_mg>. | |
954c1994 | 4581 | |
8d6d96c1 HS |
4582 | =for apidoc sv_catsv_flags |
4583 | ||
4584 | Concatenates the string from SV C<ssv> onto the end of the string in | |
4585 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. If C<flags> has C<SV_GMAGIC> | |
4586 | bit set, will C<mg_get> on the SVs if appropriate, else not. C<sv_catsv> | |
4587 | and C<sv_catsv_nomg> are implemented in terms of this function. | |
4588 | ||
4589 | =cut */ | |
4590 | ||
ef50df4b | 4591 | void |
8d6d96c1 | 4592 | Perl_sv_catsv_flags(pTHX_ SV *dsv, register SV *ssv, I32 flags) |
79072805 | 4593 | { |
4d84ee25 | 4594 | const char *spv; |
13e8c8e3 | 4595 | STRLEN slen; |
bddd5118 NC |
4596 | if (ssv) { |
4597 | if ((spv = SvPV_const(ssv, slen))) { | |
4598 | /* sutf8 and dutf8 were type bool, but under USE_ITHREADS, | |
4599 | gcc version 2.95.2 20000220 (Debian GNU/Linux) for | |
4600 | Linux xxx 2.2.17 on sparc64 with gcc -O2, we erroneously | |
4601 | get dutf8 = 0x20000000, (i.e. SVf_UTF8) even though | |
4602 | dsv->sv_flags doesn't have that bit set. | |
4fd84b44 | 4603 | Andy Dougherty 12 Oct 2001 |
bddd5118 NC |
4604 | */ |
4605 | const I32 sutf8 = DO_UTF8(ssv); | |
4606 | I32 dutf8; | |
13e8c8e3 | 4607 | |
bddd5118 NC |
4608 | if (SvGMAGICAL(dsv) && (flags & SV_GMAGIC)) |
4609 | mg_get(dsv); | |
4610 | dutf8 = DO_UTF8(dsv); | |
8d6d96c1 | 4611 | |
bddd5118 NC |
4612 | if (dutf8 != sutf8) { |
4613 | if (dutf8) { | |
4614 | /* Not modifying source SV, so taking a temporary copy. */ | |
4615 | SV* csv = sv_2mortal(newSVpvn(spv, slen)); | |
13e8c8e3 | 4616 | |
bddd5118 NC |
4617 | sv_utf8_upgrade(csv); |
4618 | spv = SvPV_const(csv, slen); | |
4619 | } | |
4620 | else | |
4621 | sv_utf8_upgrade_nomg(dsv); | |
13e8c8e3 | 4622 | } |
bddd5118 | 4623 | sv_catpvn_nomg(dsv, spv, slen); |
e84ff256 | 4624 | } |
560a288e | 4625 | } |
bddd5118 NC |
4626 | if (flags & SV_SMAGIC) |
4627 | SvSETMAGIC(dsv); | |
79072805 LW |
4628 | } |
4629 | ||
954c1994 | 4630 | /* |
954c1994 GS |
4631 | =for apidoc sv_catpv |
4632 | ||
4633 | Concatenates the string onto the end of the string which is in the SV. | |
1e54db1a JH |
4634 | If the SV has the UTF-8 status set, then the bytes appended should be |
4635 | valid UTF-8. Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>. | |
954c1994 | 4636 | |
d5ce4a7c | 4637 | =cut */ |
954c1994 | 4638 | |
ef50df4b | 4639 | void |
0c981600 | 4640 | Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
4641 | { |
4642 | register STRLEN len; | |
463ee0b2 | 4643 | STRLEN tlen; |
748a9306 | 4644 | char *junk; |
79072805 | 4645 | |
0c981600 | 4646 | if (!ptr) |
79072805 | 4647 | return; |
748a9306 | 4648 | junk = SvPV_force(sv, tlen); |
0c981600 | 4649 | len = strlen(ptr); |
463ee0b2 | 4650 | SvGROW(sv, tlen + len + 1); |
0c981600 | 4651 | if (ptr == junk) |
3f7c398e | 4652 | ptr = SvPVX_const(sv); |
0c981600 | 4653 | Move(ptr,SvPVX(sv)+tlen,len+1,char); |
b162af07 | 4654 | SvCUR_set(sv, SvCUR(sv) + len); |
d41ff1b8 | 4655 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4656 | SvTAINT(sv); |
79072805 LW |
4657 | } |
4658 | ||
954c1994 GS |
4659 | /* |
4660 | =for apidoc sv_catpv_mg | |
4661 | ||
4662 | Like C<sv_catpv>, but also handles 'set' magic. | |
4663 | ||
4664 | =cut | |
4665 | */ | |
4666 | ||
ef50df4b | 4667 | void |
0c981600 | 4668 | Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b | 4669 | { |
0c981600 | 4670 | sv_catpv(sv,ptr); |
ef50df4b GS |
4671 | SvSETMAGIC(sv); |
4672 | } | |
4673 | ||
645c22ef DM |
4674 | /* |
4675 | =for apidoc newSV | |
4676 | ||
4677 | Create a new null SV, or if len > 0, create a new empty SVt_PV type SV | |
4678 | with an initial PV allocation of len+1. Normally accessed via the C<NEWSV> | |
4679 | macro. | |
4680 | ||
4681 | =cut | |
4682 | */ | |
4683 | ||
79072805 | 4684 | SV * |
864dbfa3 | 4685 | Perl_newSV(pTHX_ STRLEN len) |
79072805 LW |
4686 | { |
4687 | register SV *sv; | |
1c846c1f | 4688 | |
4561caa4 | 4689 | new_SV(sv); |
79072805 LW |
4690 | if (len) { |
4691 | sv_upgrade(sv, SVt_PV); | |
4692 | SvGROW(sv, len + 1); | |
4693 | } | |
4694 | return sv; | |
4695 | } | |
954c1994 | 4696 | /* |
92110913 | 4697 | =for apidoc sv_magicext |
954c1994 | 4698 | |
68795e93 | 4699 | Adds magic to an SV, upgrading it if necessary. Applies the |
2d8d5d5a | 4700 | supplied vtable and returns a pointer to the magic added. |
92110913 | 4701 | |
2d8d5d5a SH |
4702 | Note that C<sv_magicext> will allow things that C<sv_magic> will not. |
4703 | In particular, you can add magic to SvREADONLY SVs, and add more than | |
4704 | one instance of the same 'how'. | |
645c22ef | 4705 | |
2d8d5d5a SH |
4706 | If C<namlen> is greater than zero then a C<savepvn> I<copy> of C<name> is |
4707 | stored, if C<namlen> is zero then C<name> is stored as-is and - as another | |
4708 | special case - if C<(name && namlen == HEf_SVKEY)> then C<name> is assumed | |
4709 | to contain an C<SV*> and is stored as-is with its REFCNT incremented. | |
92110913 | 4710 | |
2d8d5d5a | 4711 | (This is now used as a subroutine by C<sv_magic>.) |
954c1994 GS |
4712 | |
4713 | =cut | |
4714 | */ | |
92110913 | 4715 | MAGIC * |
e1ec3a88 | 4716 | Perl_sv_magicext(pTHX_ SV* sv, SV* obj, int how, const MGVTBL *vtable, |
92110913 | 4717 | const char* name, I32 namlen) |
79072805 LW |
4718 | { |
4719 | MAGIC* mg; | |
68795e93 | 4720 | |
92110913 | 4721 | if (SvTYPE(sv) < SVt_PVMG) { |
862a34c6 | 4722 | SvUPGRADE(sv, SVt_PVMG); |
463ee0b2 | 4723 | } |
a02a5408 | 4724 | Newxz(mg, 1, MAGIC); |
79072805 | 4725 | mg->mg_moremagic = SvMAGIC(sv); |
b162af07 | 4726 | SvMAGIC_set(sv, mg); |
75f9d97a | 4727 | |
05f95b08 SB |
4728 | /* Sometimes a magic contains a reference loop, where the sv and |
4729 | object refer to each other. To prevent a reference loop that | |
4730 | would prevent such objects being freed, we look for such loops | |
4731 | and if we find one we avoid incrementing the object refcount. | |
87f0b213 JH |
4732 | |
4733 | Note we cannot do this to avoid self-tie loops as intervening RV must | |
b5ccf5f2 | 4734 | have its REFCNT incremented to keep it in existence. |
87f0b213 JH |
4735 | |
4736 | */ | |
14befaf4 DM |
4737 | if (!obj || obj == sv || |
4738 | how == PERL_MAGIC_arylen || | |
4739 | how == PERL_MAGIC_qr || | |
8d2f4536 | 4740 | how == PERL_MAGIC_symtab || |
75f9d97a JH |
4741 | (SvTYPE(obj) == SVt_PVGV && |
4742 | (GvSV(obj) == sv || GvHV(obj) == (HV*)sv || GvAV(obj) == (AV*)sv || | |
4743 | GvCV(obj) == (CV*)sv || GvIOp(obj) == (IO*)sv || | |
2628be26 | 4744 | GvFORM(obj) == (CV*)sv))) |
75f9d97a | 4745 | { |
8990e307 | 4746 | mg->mg_obj = obj; |
75f9d97a | 4747 | } |
85e6fe83 | 4748 | else { |
8990e307 | 4749 | mg->mg_obj = SvREFCNT_inc(obj); |
85e6fe83 LW |
4750 | mg->mg_flags |= MGf_REFCOUNTED; |
4751 | } | |
b5ccf5f2 YST |
4752 | |
4753 | /* Normal self-ties simply pass a null object, and instead of | |
4754 | using mg_obj directly, use the SvTIED_obj macro to produce a | |
4755 | new RV as needed. For glob "self-ties", we are tieing the PVIO | |
4756 | with an RV obj pointing to the glob containing the PVIO. In | |
4757 | this case, to avoid a reference loop, we need to weaken the | |
4758 | reference. | |
4759 | */ | |
4760 | ||
4761 | if (how == PERL_MAGIC_tiedscalar && SvTYPE(sv) == SVt_PVIO && | |
4762 | obj && SvROK(obj) && GvIO(SvRV(obj)) == (IO*)sv) | |
4763 | { | |
4764 | sv_rvweaken(obj); | |
4765 | } | |
4766 | ||
79072805 | 4767 | mg->mg_type = how; |
565764a8 | 4768 | mg->mg_len = namlen; |
9cbac4c7 | 4769 | if (name) { |
92110913 | 4770 | if (namlen > 0) |
1edc1566 | 4771 | mg->mg_ptr = savepvn(name, namlen); |
c6ee37c5 | 4772 | else if (namlen == HEf_SVKEY) |
1edc1566 | 4773 | mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name); |
68795e93 | 4774 | else |
92110913 | 4775 | mg->mg_ptr = (char *) name; |
9cbac4c7 | 4776 | } |
92110913 | 4777 | mg->mg_virtual = vtable; |
68795e93 | 4778 | |
92110913 NIS |
4779 | mg_magical(sv); |
4780 | if (SvGMAGICAL(sv)) | |
4781 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
4782 | return mg; | |
4783 | } | |
4784 | ||
4785 | /* | |
4786 | =for apidoc sv_magic | |
1c846c1f | 4787 | |
92110913 NIS |
4788 | Adds magic to an SV. First upgrades C<sv> to type C<SVt_PVMG> if necessary, |
4789 | then adds a new magic item of type C<how> to the head of the magic list. | |
4790 | ||
2d8d5d5a SH |
4791 | See C<sv_magicext> (which C<sv_magic> now calls) for a description of the |
4792 | handling of the C<name> and C<namlen> arguments. | |
4793 | ||
4509d3fb SB |
4794 | You need to use C<sv_magicext> to add magic to SvREADONLY SVs and also |
4795 | to add more than one instance of the same 'how'. | |
4796 | ||
92110913 NIS |
4797 | =cut |
4798 | */ | |
4799 | ||
4800 | void | |
4801 | Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen) | |
68795e93 | 4802 | { |
aec46f14 | 4803 | const MGVTBL *vtable; |
92110913 | 4804 | MAGIC* mg; |
92110913 | 4805 | |
f8c7b90f | 4806 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d NC |
4807 | if (SvIsCOW(sv)) |
4808 | sv_force_normal_flags(sv, 0); | |
4809 | #endif | |
92110913 | 4810 | if (SvREADONLY(sv)) { |
d8084ca5 DM |
4811 | if ( |
4812 | /* its okay to attach magic to shared strings; the subsequent | |
4813 | * upgrade to PVMG will unshare the string */ | |
4814 | !(SvFAKE(sv) && SvTYPE(sv) < SVt_PVMG) | |
4815 | ||
4816 | && IN_PERL_RUNTIME | |
92110913 NIS |
4817 | && how != PERL_MAGIC_regex_global |
4818 | && how != PERL_MAGIC_bm | |
4819 | && how != PERL_MAGIC_fm | |
4820 | && how != PERL_MAGIC_sv | |
e6469971 | 4821 | && how != PERL_MAGIC_backref |
92110913 NIS |
4822 | ) |
4823 | { | |
4824 | Perl_croak(aTHX_ PL_no_modify); | |
4825 | } | |
4826 | } | |
4827 | if (SvMAGICAL(sv) || (how == PERL_MAGIC_taint && SvTYPE(sv) >= SVt_PVMG)) { | |
4828 | if (SvMAGIC(sv) && (mg = mg_find(sv, how))) { | |
68795e93 NIS |
4829 | /* sv_magic() refuses to add a magic of the same 'how' as an |
4830 | existing one | |
92110913 NIS |
4831 | */ |
4832 | if (how == PERL_MAGIC_taint) | |
4833 | mg->mg_len |= 1; | |
4834 | return; | |
4835 | } | |
4836 | } | |
68795e93 | 4837 | |
79072805 | 4838 | switch (how) { |
14befaf4 | 4839 | case PERL_MAGIC_sv: |
92110913 | 4840 | vtable = &PL_vtbl_sv; |
79072805 | 4841 | break; |
14befaf4 | 4842 | case PERL_MAGIC_overload: |
92110913 | 4843 | vtable = &PL_vtbl_amagic; |
a0d0e21e | 4844 | break; |
14befaf4 | 4845 | case PERL_MAGIC_overload_elem: |
92110913 | 4846 | vtable = &PL_vtbl_amagicelem; |
a0d0e21e | 4847 | break; |
14befaf4 | 4848 | case PERL_MAGIC_overload_table: |
92110913 | 4849 | vtable = &PL_vtbl_ovrld; |
a0d0e21e | 4850 | break; |
14befaf4 | 4851 | case PERL_MAGIC_bm: |
92110913 | 4852 | vtable = &PL_vtbl_bm; |
79072805 | 4853 | break; |
14befaf4 | 4854 | case PERL_MAGIC_regdata: |
92110913 | 4855 | vtable = &PL_vtbl_regdata; |
6cef1e77 | 4856 | break; |
14befaf4 | 4857 | case PERL_MAGIC_regdatum: |
92110913 | 4858 | vtable = &PL_vtbl_regdatum; |
6cef1e77 | 4859 | break; |
14befaf4 | 4860 | case PERL_MAGIC_env: |
92110913 | 4861 | vtable = &PL_vtbl_env; |
79072805 | 4862 | break; |
14befaf4 | 4863 | case PERL_MAGIC_fm: |
92110913 | 4864 | vtable = &PL_vtbl_fm; |
55497cff | 4865 | break; |
14befaf4 | 4866 | case PERL_MAGIC_envelem: |
92110913 | 4867 | vtable = &PL_vtbl_envelem; |
79072805 | 4868 | break; |
14befaf4 | 4869 | case PERL_MAGIC_regex_global: |
92110913 | 4870 | vtable = &PL_vtbl_mglob; |
93a17b20 | 4871 | break; |
14befaf4 | 4872 | case PERL_MAGIC_isa: |
92110913 | 4873 | vtable = &PL_vtbl_isa; |
463ee0b2 | 4874 | break; |
14befaf4 | 4875 | case PERL_MAGIC_isaelem: |
92110913 | 4876 | vtable = &PL_vtbl_isaelem; |
463ee0b2 | 4877 | break; |
14befaf4 | 4878 | case PERL_MAGIC_nkeys: |
92110913 | 4879 | vtable = &PL_vtbl_nkeys; |
16660edb | 4880 | break; |
14befaf4 | 4881 | case PERL_MAGIC_dbfile: |
aec46f14 | 4882 | vtable = NULL; |
93a17b20 | 4883 | break; |
14befaf4 | 4884 | case PERL_MAGIC_dbline: |
92110913 | 4885 | vtable = &PL_vtbl_dbline; |
79072805 | 4886 | break; |
36477c24 | 4887 | #ifdef USE_LOCALE_COLLATE |
14befaf4 | 4888 | case PERL_MAGIC_collxfrm: |
92110913 | 4889 | vtable = &PL_vtbl_collxfrm; |
bbce6d69 | 4890 | break; |
36477c24 | 4891 | #endif /* USE_LOCALE_COLLATE */ |
14befaf4 | 4892 | case PERL_MAGIC_tied: |
92110913 | 4893 | vtable = &PL_vtbl_pack; |
463ee0b2 | 4894 | break; |
14befaf4 DM |
4895 | case PERL_MAGIC_tiedelem: |
4896 | case PERL_MAGIC_tiedscalar: | |
92110913 | 4897 | vtable = &PL_vtbl_packelem; |
463ee0b2 | 4898 | break; |
14befaf4 | 4899 | case PERL_MAGIC_qr: |
92110913 | 4900 | vtable = &PL_vtbl_regexp; |
c277df42 | 4901 | break; |
14befaf4 | 4902 | case PERL_MAGIC_sig: |
92110913 | 4903 | vtable = &PL_vtbl_sig; |
79072805 | 4904 | break; |
14befaf4 | 4905 | case PERL_MAGIC_sigelem: |
92110913 | 4906 | vtable = &PL_vtbl_sigelem; |
79072805 | 4907 | break; |
14befaf4 | 4908 | case PERL_MAGIC_taint: |
92110913 | 4909 | vtable = &PL_vtbl_taint; |
463ee0b2 | 4910 | break; |
14befaf4 | 4911 | case PERL_MAGIC_uvar: |
92110913 | 4912 | vtable = &PL_vtbl_uvar; |
79072805 | 4913 | break; |
14befaf4 | 4914 | case PERL_MAGIC_vec: |
92110913 | 4915 | vtable = &PL_vtbl_vec; |
79072805 | 4916 | break; |
a3874608 | 4917 | case PERL_MAGIC_arylen_p: |
bfcb3514 | 4918 | case PERL_MAGIC_rhash: |
8d2f4536 | 4919 | case PERL_MAGIC_symtab: |
ece467f9 | 4920 | case PERL_MAGIC_vstring: |
aec46f14 | 4921 | vtable = NULL; |
ece467f9 | 4922 | break; |
7e8c5dac HS |
4923 | case PERL_MAGIC_utf8: |
4924 | vtable = &PL_vtbl_utf8; | |
4925 | break; | |
14befaf4 | 4926 | case PERL_MAGIC_substr: |
92110913 | 4927 | vtable = &PL_vtbl_substr; |
79072805 | 4928 | break; |
14befaf4 | 4929 | case PERL_MAGIC_defelem: |
92110913 | 4930 | vtable = &PL_vtbl_defelem; |
5f05dabc | 4931 | break; |
14befaf4 | 4932 | case PERL_MAGIC_glob: |
92110913 | 4933 | vtable = &PL_vtbl_glob; |
79072805 | 4934 | break; |
14befaf4 | 4935 | case PERL_MAGIC_arylen: |
92110913 | 4936 | vtable = &PL_vtbl_arylen; |
79072805 | 4937 | break; |
14befaf4 | 4938 | case PERL_MAGIC_pos: |
92110913 | 4939 | vtable = &PL_vtbl_pos; |
a0d0e21e | 4940 | break; |
14befaf4 | 4941 | case PERL_MAGIC_backref: |
92110913 | 4942 | vtable = &PL_vtbl_backref; |
810b8aa5 | 4943 | break; |
14befaf4 DM |
4944 | case PERL_MAGIC_ext: |
4945 | /* Reserved for use by extensions not perl internals. */ | |
4633a7c4 LW |
4946 | /* Useful for attaching extension internal data to perl vars. */ |
4947 | /* Note that multiple extensions may clash if magical scalars */ | |
4948 | /* etc holding private data from one are passed to another. */ | |
aec46f14 | 4949 | vtable = NULL; |
a0d0e21e | 4950 | break; |
79072805 | 4951 | default: |
14befaf4 | 4952 | Perl_croak(aTHX_ "Don't know how to handle magic of type \\%o", how); |
463ee0b2 | 4953 | } |
68795e93 | 4954 | |
92110913 | 4955 | /* Rest of work is done else where */ |
aec46f14 | 4956 | mg = sv_magicext(sv,obj,how,vtable,name,namlen); |
68795e93 | 4957 | |
92110913 NIS |
4958 | switch (how) { |
4959 | case PERL_MAGIC_taint: | |
4960 | mg->mg_len = 1; | |
4961 | break; | |
4962 | case PERL_MAGIC_ext: | |
4963 | case PERL_MAGIC_dbfile: | |
4964 | SvRMAGICAL_on(sv); | |
4965 | break; | |
4966 | } | |
463ee0b2 LW |
4967 | } |
4968 | ||
c461cf8f JH |
4969 | /* |
4970 | =for apidoc sv_unmagic | |
4971 | ||
645c22ef | 4972 | Removes all magic of type C<type> from an SV. |
c461cf8f JH |
4973 | |
4974 | =cut | |
4975 | */ | |
4976 | ||
463ee0b2 | 4977 | int |
864dbfa3 | 4978 | Perl_sv_unmagic(pTHX_ SV *sv, int type) |
463ee0b2 LW |
4979 | { |
4980 | MAGIC* mg; | |
4981 | MAGIC** mgp; | |
91bba347 | 4982 | if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv)) |
463ee0b2 LW |
4983 | return 0; |
4984 | mgp = &SvMAGIC(sv); | |
4985 | for (mg = *mgp; mg; mg = *mgp) { | |
4986 | if (mg->mg_type == type) { | |
e1ec3a88 | 4987 | const MGVTBL* const vtbl = mg->mg_virtual; |
463ee0b2 | 4988 | *mgp = mg->mg_moremagic; |
1d7c1841 | 4989 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 | 4990 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
14befaf4 | 4991 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
92110913 | 4992 | if (mg->mg_len > 0) |
1edc1566 | 4993 | Safefree(mg->mg_ptr); |
565764a8 | 4994 | else if (mg->mg_len == HEf_SVKEY) |
1edc1566 | 4995 | SvREFCNT_dec((SV*)mg->mg_ptr); |
7e8c5dac HS |
4996 | else if (mg->mg_type == PERL_MAGIC_utf8 && mg->mg_ptr) |
4997 | Safefree(mg->mg_ptr); | |
9cbac4c7 | 4998 | } |
a0d0e21e LW |
4999 | if (mg->mg_flags & MGf_REFCOUNTED) |
5000 | SvREFCNT_dec(mg->mg_obj); | |
463ee0b2 LW |
5001 | Safefree(mg); |
5002 | } | |
5003 | else | |
5004 | mgp = &mg->mg_moremagic; | |
79072805 | 5005 | } |
91bba347 | 5006 | if (!SvMAGIC(sv)) { |
463ee0b2 | 5007 | SvMAGICAL_off(sv); |
06759ea0 | 5008 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
463ee0b2 LW |
5009 | } |
5010 | ||
5011 | return 0; | |
79072805 LW |
5012 | } |
5013 | ||
c461cf8f JH |
5014 | /* |
5015 | =for apidoc sv_rvweaken | |
5016 | ||
645c22ef DM |
5017 | Weaken a reference: set the C<SvWEAKREF> flag on this RV; give the |
5018 | referred-to SV C<PERL_MAGIC_backref> magic if it hasn't already; and | |
5019 | push a back-reference to this RV onto the array of backreferences | |
5020 | associated with that magic. | |
c461cf8f JH |
5021 | |
5022 | =cut | |
5023 | */ | |
5024 | ||
810b8aa5 | 5025 | SV * |
864dbfa3 | 5026 | Perl_sv_rvweaken(pTHX_ SV *sv) |
810b8aa5 GS |
5027 | { |
5028 | SV *tsv; | |
5029 | if (!SvOK(sv)) /* let undefs pass */ | |
5030 | return sv; | |
5031 | if (!SvROK(sv)) | |
cea2e8a9 | 5032 | Perl_croak(aTHX_ "Can't weaken a nonreference"); |
810b8aa5 | 5033 | else if (SvWEAKREF(sv)) { |
810b8aa5 | 5034 | if (ckWARN(WARN_MISC)) |
9014280d | 5035 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Reference is already weak"); |
810b8aa5 GS |
5036 | return sv; |
5037 | } | |
5038 | tsv = SvRV(sv); | |
e15faf7d | 5039 | Perl_sv_add_backref(aTHX_ tsv, sv); |
810b8aa5 | 5040 | SvWEAKREF_on(sv); |
1c846c1f | 5041 | SvREFCNT_dec(tsv); |
810b8aa5 GS |
5042 | return sv; |
5043 | } | |
5044 | ||
645c22ef DM |
5045 | /* Give tsv backref magic if it hasn't already got it, then push a |
5046 | * back-reference to sv onto the array associated with the backref magic. | |
5047 | */ | |
5048 | ||
e15faf7d NC |
5049 | void |
5050 | Perl_sv_add_backref(pTHX_ SV *tsv, SV *sv) | |
810b8aa5 GS |
5051 | { |
5052 | AV *av; | |
5053 | MAGIC *mg; | |
14befaf4 | 5054 | if (SvMAGICAL(tsv) && (mg = mg_find(tsv, PERL_MAGIC_backref))) |
810b8aa5 GS |
5055 | av = (AV*)mg->mg_obj; |
5056 | else { | |
5057 | av = newAV(); | |
14befaf4 | 5058 | sv_magic(tsv, (SV*)av, PERL_MAGIC_backref, NULL, 0); |
d99b02a1 DM |
5059 | /* av now has a refcnt of 2, which avoids it getting freed |
5060 | * before us during global cleanup. The extra ref is removed | |
5061 | * by magic_killbackrefs() when tsv is being freed */ | |
810b8aa5 | 5062 | } |
d91d49e8 | 5063 | if (AvFILLp(av) >= AvMAX(av)) { |
d91d49e8 MM |
5064 | av_extend(av, AvFILLp(av)+1); |
5065 | } | |
5066 | AvARRAY(av)[++AvFILLp(av)] = sv; /* av_push() */ | |
810b8aa5 GS |
5067 | } |
5068 | ||
645c22ef DM |
5069 | /* delete a back-reference to ourselves from the backref magic associated |
5070 | * with the SV we point to. | |
5071 | */ | |
5072 | ||
1c846c1f | 5073 | STATIC void |
e15faf7d | 5074 | S_sv_del_backref(pTHX_ SV *tsv, SV *sv) |
810b8aa5 GS |
5075 | { |
5076 | AV *av; | |
5077 | SV **svp; | |
5078 | I32 i; | |
c04a4dfe | 5079 | MAGIC *mg = NULL; |
e15faf7d NC |
5080 | if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, PERL_MAGIC_backref))) { |
5081 | if (PL_in_clean_all) | |
5082 | return; | |
5083 | } | |
14befaf4 | 5084 | if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, PERL_MAGIC_backref))) |
cea2e8a9 | 5085 | Perl_croak(aTHX_ "panic: del_backref"); |
810b8aa5 GS |
5086 | av = (AV *)mg->mg_obj; |
5087 | svp = AvARRAY(av); | |
6a76db8b NC |
5088 | /* We shouldn't be in here more than once, but for paranoia reasons lets |
5089 | not assume this. */ | |
5090 | for (i = AvFILLp(av); i >= 0; i--) { | |
5091 | if (svp[i] == sv) { | |
5092 | const SSize_t fill = AvFILLp(av); | |
5093 | if (i != fill) { | |
5094 | /* We weren't the last entry. | |
5095 | An unordered list has this property that you can take the | |
5096 | last element off the end to fill the hole, and it's still | |
5097 | an unordered list :-) | |
5098 | */ | |
5099 | svp[i] = svp[fill]; | |
5100 | } | |
5101 | svp[fill] = Nullsv; | |
5102 | AvFILLp(av) = fill - 1; | |
5103 | } | |
5104 | } | |
810b8aa5 GS |
5105 | } |
5106 | ||
954c1994 GS |
5107 | /* |
5108 | =for apidoc sv_insert | |
5109 | ||
5110 | Inserts a string at the specified offset/length within the SV. Similar to | |
5111 | the Perl substr() function. | |
5112 | ||
5113 | =cut | |
5114 | */ | |
5115 | ||
79072805 | 5116 | void |
e1ec3a88 | 5117 | Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, const char *little, STRLEN littlelen) |
79072805 LW |
5118 | { |
5119 | register char *big; | |
5120 | register char *mid; | |
5121 | register char *midend; | |
5122 | register char *bigend; | |
5123 | register I32 i; | |
6ff81951 | 5124 | STRLEN curlen; |
1c846c1f | 5125 | |
79072805 | 5126 | |
8990e307 | 5127 | if (!bigstr) |
cea2e8a9 | 5128 | Perl_croak(aTHX_ "Can't modify non-existent substring"); |
6ff81951 | 5129 | SvPV_force(bigstr, curlen); |
60fa28ff | 5130 | (void)SvPOK_only_UTF8(bigstr); |
6ff81951 GS |
5131 | if (offset + len > curlen) { |
5132 | SvGROW(bigstr, offset+len+1); | |
93524f2b | 5133 | Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char); |
6ff81951 GS |
5134 | SvCUR_set(bigstr, offset+len); |
5135 | } | |
79072805 | 5136 | |
69b47968 | 5137 | SvTAINT(bigstr); |
79072805 LW |
5138 | i = littlelen - len; |
5139 | if (i > 0) { /* string might grow */ | |
a0d0e21e | 5140 | big = SvGROW(bigstr, SvCUR(bigstr) + i + 1); |
79072805 LW |
5141 | mid = big + offset + len; |
5142 | midend = bigend = big + SvCUR(bigstr); | |
5143 | bigend += i; | |
5144 | *bigend = '\0'; | |
5145 | while (midend > mid) /* shove everything down */ | |
5146 | *--bigend = *--midend; | |
5147 | Move(little,big+offset,littlelen,char); | |
b162af07 | 5148 | SvCUR_set(bigstr, SvCUR(bigstr) + i); |
79072805 LW |
5149 | SvSETMAGIC(bigstr); |
5150 | return; | |
5151 | } | |
5152 | else if (i == 0) { | |
463ee0b2 | 5153 | Move(little,SvPVX(bigstr)+offset,len,char); |
79072805 LW |
5154 | SvSETMAGIC(bigstr); |
5155 | return; | |
5156 | } | |
5157 | ||
463ee0b2 | 5158 | big = SvPVX(bigstr); |
79072805 LW |
5159 | mid = big + offset; |
5160 | midend = mid + len; | |
5161 | bigend = big + SvCUR(bigstr); | |
5162 | ||
5163 | if (midend > bigend) | |
cea2e8a9 | 5164 | Perl_croak(aTHX_ "panic: sv_insert"); |
79072805 LW |
5165 | |
5166 | if (mid - big > bigend - midend) { /* faster to shorten from end */ | |
5167 | if (littlelen) { | |
5168 | Move(little, mid, littlelen,char); | |
5169 | mid += littlelen; | |
5170 | } | |
5171 | i = bigend - midend; | |
5172 | if (i > 0) { | |
5173 | Move(midend, mid, i,char); | |
5174 | mid += i; | |
5175 | } | |
5176 | *mid = '\0'; | |
5177 | SvCUR_set(bigstr, mid - big); | |
5178 | } | |
155aba94 | 5179 | else if ((i = mid - big)) { /* faster from front */ |
79072805 LW |
5180 | midend -= littlelen; |
5181 | mid = midend; | |
5182 | sv_chop(bigstr,midend-i); | |
5183 | big += i; | |
5184 | while (i--) | |
5185 | *--midend = *--big; | |
5186 | if (littlelen) | |
5187 | Move(little, mid, littlelen,char); | |
5188 | } | |
5189 | else if (littlelen) { | |
5190 | midend -= littlelen; | |
5191 | sv_chop(bigstr,midend); | |
5192 | Move(little,midend,littlelen,char); | |
5193 | } | |
5194 | else { | |
5195 | sv_chop(bigstr,midend); | |
5196 | } | |
5197 | SvSETMAGIC(bigstr); | |
5198 | } | |
5199 | ||
c461cf8f JH |
5200 | /* |
5201 | =for apidoc sv_replace | |
5202 | ||
5203 | Make the first argument a copy of the second, then delete the original. | |
645c22ef DM |
5204 | The target SV physically takes over ownership of the body of the source SV |
5205 | and inherits its flags; however, the target keeps any magic it owns, | |
5206 | and any magic in the source is discarded. | |
ff276b08 | 5207 | Note that this is a rather specialist SV copying operation; most of the |
645c22ef | 5208 | time you'll want to use C<sv_setsv> or one of its many macro front-ends. |
c461cf8f JH |
5209 | |
5210 | =cut | |
5211 | */ | |
79072805 LW |
5212 | |
5213 | void | |
864dbfa3 | 5214 | Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv) |
79072805 | 5215 | { |
a3b680e6 | 5216 | const U32 refcnt = SvREFCNT(sv); |
765f542d | 5217 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
30e5c352 | 5218 | if (SvREFCNT(nsv) != 1) { |
7437becc | 5219 | Perl_croak(aTHX_ "panic: reference miscount on nsv in sv_replace() (%" |
30e5c352 NC |
5220 | UVuf " != 1)", (UV) SvREFCNT(nsv)); |
5221 | } | |
93a17b20 | 5222 | if (SvMAGICAL(sv)) { |
a0d0e21e LW |
5223 | if (SvMAGICAL(nsv)) |
5224 | mg_free(nsv); | |
5225 | else | |
5226 | sv_upgrade(nsv, SVt_PVMG); | |
b162af07 | 5227 | SvMAGIC_set(nsv, SvMAGIC(sv)); |
a0d0e21e | 5228 | SvFLAGS(nsv) |= SvMAGICAL(sv); |
93a17b20 | 5229 | SvMAGICAL_off(sv); |
b162af07 | 5230 | SvMAGIC_set(sv, NULL); |
93a17b20 | 5231 | } |
79072805 LW |
5232 | SvREFCNT(sv) = 0; |
5233 | sv_clear(sv); | |
477f5d66 | 5234 | assert(!SvREFCNT(sv)); |
fd0854ff DM |
5235 | #ifdef DEBUG_LEAKING_SCALARS |
5236 | sv->sv_flags = nsv->sv_flags; | |
5237 | sv->sv_any = nsv->sv_any; | |
5238 | sv->sv_refcnt = nsv->sv_refcnt; | |
f34d0642 | 5239 | sv->sv_u = nsv->sv_u; |
fd0854ff | 5240 | #else |
79072805 | 5241 | StructCopy(nsv,sv,SV); |
fd0854ff | 5242 | #endif |
7b2c381c NC |
5243 | /* Currently could join these into one piece of pointer arithmetic, but |
5244 | it would be unclear. */ | |
5245 | if(SvTYPE(sv) == SVt_IV) | |
5246 | SvANY(sv) | |
339049b0 | 5247 | = (XPVIV*)((char*)&(sv->sv_u.svu_iv) - STRUCT_OFFSET(XPVIV, xiv_iv)); |
7b2c381c | 5248 | else if (SvTYPE(sv) == SVt_RV) { |
339049b0 | 5249 | SvANY(sv) = &sv->sv_u.svu_rv; |
7b2c381c NC |
5250 | } |
5251 | ||
fd0854ff | 5252 | |
f8c7b90f | 5253 | #ifdef PERL_OLD_COPY_ON_WRITE |
d3d0e6f1 NC |
5254 | if (SvIsCOW_normal(nsv)) { |
5255 | /* We need to follow the pointers around the loop to make the | |
5256 | previous SV point to sv, rather than nsv. */ | |
5257 | SV *next; | |
5258 | SV *current = nsv; | |
5259 | while ((next = SV_COW_NEXT_SV(current)) != nsv) { | |
5260 | assert(next); | |
5261 | current = next; | |
3f7c398e | 5262 | assert(SvPVX_const(current) == SvPVX_const(nsv)); |
d3d0e6f1 NC |
5263 | } |
5264 | /* Make the SV before us point to the SV after us. */ | |
5265 | if (DEBUG_C_TEST) { | |
5266 | PerlIO_printf(Perl_debug_log, "previous is\n"); | |
5267 | sv_dump(current); | |
a29f6d03 NC |
5268 | PerlIO_printf(Perl_debug_log, |
5269 | "move it from 0x%"UVxf" to 0x%"UVxf"\n", | |
d3d0e6f1 NC |
5270 | (UV) SV_COW_NEXT_SV(current), (UV) sv); |
5271 | } | |
a29f6d03 | 5272 | SV_COW_NEXT_SV_SET(current, sv); |
d3d0e6f1 NC |
5273 | } |
5274 | #endif | |
79072805 | 5275 | SvREFCNT(sv) = refcnt; |
1edc1566 | 5276 | SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */ |
39cf41c2 | 5277 | SvREFCNT(nsv) = 0; |
463ee0b2 | 5278 | del_SV(nsv); |
79072805 LW |
5279 | } |
5280 | ||
c461cf8f JH |
5281 | /* |
5282 | =for apidoc sv_clear | |
5283 | ||
645c22ef DM |
5284 | Clear an SV: call any destructors, free up any memory used by the body, |
5285 | and free the body itself. The SV's head is I<not> freed, although | |
5286 | its type is set to all 1's so that it won't inadvertently be assumed | |
5287 | to be live during global destruction etc. | |
5288 | This function should only be called when REFCNT is zero. Most of the time | |
5289 | you'll want to call C<sv_free()> (or its macro wrapper C<SvREFCNT_dec>) | |
5290 | instead. | |
c461cf8f JH |
5291 | |
5292 | =cut | |
5293 | */ | |
5294 | ||
79072805 | 5295 | void |
864dbfa3 | 5296 | Perl_sv_clear(pTHX_ register SV *sv) |
79072805 | 5297 | { |
27da23d5 | 5298 | dVAR; |
82bb6deb NC |
5299 | void** old_body_arena; |
5300 | size_t old_body_offset; | |
5301 | const U32 type = SvTYPE(sv); | |
5302 | ||
79072805 LW |
5303 | assert(sv); |
5304 | assert(SvREFCNT(sv) == 0); | |
5305 | ||
82bb6deb NC |
5306 | if (type <= SVt_IV) |
5307 | return; | |
5308 | ||
5309 | old_body_arena = 0; | |
5310 | old_body_offset = 0; | |
5311 | ||
ed6116ce | 5312 | if (SvOBJECT(sv)) { |
3280af22 | 5313 | if (PL_defstash) { /* Still have a symbol table? */ |
39644a26 | 5314 | dSP; |
893645bd | 5315 | HV* stash; |
d460ef45 | 5316 | do { |
b464bac0 | 5317 | CV* destructor; |
4e8e7886 | 5318 | stash = SvSTASH(sv); |
32251b26 | 5319 | destructor = StashHANDLER(stash,DESTROY); |
4e8e7886 | 5320 | if (destructor) { |
1b6737cc | 5321 | SV* const tmpref = newRV(sv); |
5cc433a6 | 5322 | SvREADONLY_on(tmpref); /* DESTROY() could be naughty */ |
4e8e7886 | 5323 | ENTER; |
e788e7d3 | 5324 | PUSHSTACKi(PERLSI_DESTROY); |
4e8e7886 GS |
5325 | EXTEND(SP, 2); |
5326 | PUSHMARK(SP); | |
5cc433a6 | 5327 | PUSHs(tmpref); |
4e8e7886 | 5328 | PUTBACK; |
44389ee9 | 5329 | call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR|G_VOID); |
7a5fa8a2 NIS |
5330 | |
5331 | ||
d3acc0f7 | 5332 | POPSTACK; |
3095d977 | 5333 | SPAGAIN; |
4e8e7886 | 5334 | LEAVE; |
5cc433a6 AB |
5335 | if(SvREFCNT(tmpref) < 2) { |
5336 | /* tmpref is not kept alive! */ | |
5337 | SvREFCNT(sv)--; | |
b162af07 | 5338 | SvRV_set(tmpref, NULL); |
5cc433a6 AB |
5339 | SvROK_off(tmpref); |
5340 | } | |
5341 | SvREFCNT_dec(tmpref); | |
4e8e7886 GS |
5342 | } |
5343 | } while (SvOBJECT(sv) && SvSTASH(sv) != stash); | |
8ebc5c01 | 5344 | |
6f44e0a4 JP |
5345 | |
5346 | if (SvREFCNT(sv)) { | |
5347 | if (PL_in_clean_objs) | |
cea2e8a9 | 5348 | Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'", |
bfcb3514 | 5349 | HvNAME_get(stash)); |
6f44e0a4 JP |
5350 | /* DESTROY gave object new lease on life */ |
5351 | return; | |
5352 | } | |
a0d0e21e | 5353 | } |
4e8e7886 | 5354 | |
a0d0e21e | 5355 | if (SvOBJECT(sv)) { |
4e8e7886 | 5356 | SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */ |
a0d0e21e | 5357 | SvOBJECT_off(sv); /* Curse the object. */ |
82bb6deb | 5358 | if (type != SVt_PVIO) |
3280af22 | 5359 | --PL_sv_objcount; /* XXX Might want something more general */ |
a0d0e21e | 5360 | } |
463ee0b2 | 5361 | } |
82bb6deb | 5362 | if (type >= SVt_PVMG) { |
524189f1 JH |
5363 | if (SvMAGIC(sv)) |
5364 | mg_free(sv); | |
82bb6deb | 5365 | if (type == SVt_PVMG && SvFLAGS(sv) & SVpad_TYPED) |
524189f1 JH |
5366 | SvREFCNT_dec(SvSTASH(sv)); |
5367 | } | |
82bb6deb | 5368 | switch (type) { |
8990e307 | 5369 | case SVt_PVIO: |
df0bd2f4 GS |
5370 | if (IoIFP(sv) && |
5371 | IoIFP(sv) != PerlIO_stdin() && | |
5f05dabc | 5372 | IoIFP(sv) != PerlIO_stdout() && |
5373 | IoIFP(sv) != PerlIO_stderr()) | |
93578b34 | 5374 | { |
f2b5be74 | 5375 | io_close((IO*)sv, FALSE); |
93578b34 | 5376 | } |
1d7c1841 | 5377 | if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP)) |
1236053a | 5378 | PerlDir_close(IoDIRP(sv)); |
1d7c1841 | 5379 | IoDIRP(sv) = (DIR*)NULL; |
8990e307 LW |
5380 | Safefree(IoTOP_NAME(sv)); |
5381 | Safefree(IoFMT_NAME(sv)); | |
5382 | Safefree(IoBOTTOM_NAME(sv)); | |
82bb6deb NC |
5383 | /* PVIOs aren't from arenas */ |
5384 | goto freescalar; | |
79072805 | 5385 | case SVt_PVBM: |
82bb6deb | 5386 | old_body_arena = (void **) &PL_xpvbm_root; |
a0d0e21e | 5387 | goto freescalar; |
79072805 | 5388 | case SVt_PVCV: |
82bb6deb | 5389 | old_body_arena = (void **) &PL_xpvcv_root; |
748a9306 | 5390 | case SVt_PVFM: |
82bb6deb | 5391 | /* PVFMs aren't from arenas */ |
85e6fe83 | 5392 | cv_undef((CV*)sv); |
a0d0e21e | 5393 | goto freescalar; |
79072805 | 5394 | case SVt_PVHV: |
85e6fe83 | 5395 | hv_undef((HV*)sv); |
82bb6deb NC |
5396 | old_body_arena = (void **) &PL_xpvhv_root; |
5397 | old_body_offset = STRUCT_OFFSET(XPVHV, xhv_fill); | |
a0d0e21e | 5398 | break; |
79072805 | 5399 | case SVt_PVAV: |
85e6fe83 | 5400 | av_undef((AV*)sv); |
82bb6deb NC |
5401 | old_body_arena = (void **) &PL_xpvav_root; |
5402 | old_body_offset = STRUCT_OFFSET(XPVAV, xav_fill); | |
a0d0e21e | 5403 | break; |
02270b4e | 5404 | case SVt_PVLV: |
dd28f7bb DM |
5405 | if (LvTYPE(sv) == 'T') { /* for tie: return HE to pool */ |
5406 | SvREFCNT_dec(HeKEY_sv((HE*)LvTARG(sv))); | |
5407 | HeNEXT((HE*)LvTARG(sv)) = PL_hv_fetch_ent_mh; | |
5408 | PL_hv_fetch_ent_mh = (HE*)LvTARG(sv); | |
5409 | } | |
5410 | else if (LvTYPE(sv) != 't') /* unless tie: unrefcnted fake SV** */ | |
5411 | SvREFCNT_dec(LvTARG(sv)); | |
82bb6deb | 5412 | old_body_arena = (void **) &PL_xpvlv_root; |
02270b4e | 5413 | goto freescalar; |
a0d0e21e | 5414 | case SVt_PVGV: |
1edc1566 | 5415 | gp_free((GV*)sv); |
a0d0e21e | 5416 | Safefree(GvNAME(sv)); |
893645bd NC |
5417 | /* If we're in a stash, we don't own a reference to it. However it does |
5418 | have a back reference to us, which needs to be cleared. */ | |
5419 | if (GvSTASH(sv)) | |
5420 | sv_del_backref((SV*)GvSTASH(sv), sv); | |
82bb6deb NC |
5421 | old_body_arena = (void **) &PL_xpvgv_root; |
5422 | goto freescalar; | |
79072805 | 5423 | case SVt_PVMG: |
82bb6deb NC |
5424 | old_body_arena = (void **) &PL_xpvmg_root; |
5425 | goto freescalar; | |
79072805 | 5426 | case SVt_PVNV: |
82bb6deb NC |
5427 | old_body_arena = (void **) &PL_xpvnv_root; |
5428 | goto freescalar; | |
79072805 | 5429 | case SVt_PVIV: |
82bb6deb NC |
5430 | old_body_arena = (void **) &PL_xpviv_root; |
5431 | old_body_offset = STRUCT_OFFSET(XPVIV, xpv_cur); | |
a0d0e21e | 5432 | freescalar: |
5228ca4e NC |
5433 | /* Don't bother with SvOOK_off(sv); as we're only going to free it. */ |
5434 | if (SvOOK(sv)) { | |
93524f2b | 5435 | SvPV_set(sv, SvPVX_mutable(sv) - SvIVX(sv)); |
5228ca4e NC |
5436 | /* Don't even bother with turning off the OOK flag. */ |
5437 | } | |
82bb6deb | 5438 | goto pvrv_common; |
79072805 | 5439 | case SVt_PV: |
82bb6deb NC |
5440 | old_body_arena = (void **) &PL_xpv_root; |
5441 | old_body_offset = STRUCT_OFFSET(XPV, xpv_cur); | |
a0d0e21e | 5442 | case SVt_RV: |
82bb6deb | 5443 | pvrv_common: |
810b8aa5 | 5444 | if (SvROK(sv)) { |
e15faf7d | 5445 | SV *target = SvRV(sv); |
810b8aa5 | 5446 | if (SvWEAKREF(sv)) |
e15faf7d | 5447 | sv_del_backref(target, sv); |
810b8aa5 | 5448 | else |
e15faf7d | 5449 | SvREFCNT_dec(target); |
810b8aa5 | 5450 | } |
f8c7b90f | 5451 | #ifdef PERL_OLD_COPY_ON_WRITE |
3f7c398e | 5452 | else if (SvPVX_const(sv)) { |
765f542d NC |
5453 | if (SvIsCOW(sv)) { |
5454 | /* I believe I need to grab the global SV mutex here and | |
5455 | then recheck the COW status. */ | |
46187eeb NC |
5456 | if (DEBUG_C_TEST) { |
5457 | PerlIO_printf(Perl_debug_log, "Copy on write: clear\n"); | |
e419cbc5 | 5458 | sv_dump(sv); |
46187eeb | 5459 | } |
bdd68bc3 NC |
5460 | sv_release_COW(sv, SvPVX_const(sv), SvLEN(sv), |
5461 | SV_COW_NEXT_SV(sv)); | |
765f542d NC |
5462 | /* And drop it here. */ |
5463 | SvFAKE_off(sv); | |
5464 | } else if (SvLEN(sv)) { | |
3f7c398e | 5465 | Safefree(SvPVX_const(sv)); |
765f542d NC |
5466 | } |
5467 | } | |
5468 | #else | |
3f7c398e | 5469 | else if (SvPVX_const(sv) && SvLEN(sv)) |
94010e71 | 5470 | Safefree(SvPVX_mutable(sv)); |
3f7c398e | 5471 | else if (SvPVX_const(sv) && SvREADONLY(sv) && SvFAKE(sv)) { |
bdd68bc3 | 5472 | unshare_hek(SvSHARED_HEK_FROM_PV(SvPVX_const(sv))); |
1c846c1f NIS |
5473 | SvFAKE_off(sv); |
5474 | } | |
765f542d | 5475 | #endif |
79072805 LW |
5476 | break; |
5477 | case SVt_NV: | |
82bb6deb | 5478 | old_body_arena = (void **) &PL_xnv_root; |
79072805 LW |
5479 | break; |
5480 | } | |
5481 | ||
893645bd NC |
5482 | SvFLAGS(sv) &= SVf_BREAK; |
5483 | SvFLAGS(sv) |= SVTYPEMASK; | |
5484 | ||
82bb6deb NC |
5485 | #ifndef PURIFY |
5486 | if (old_body_arena) { | |
5487 | del_body(((char *)SvANY(sv) + old_body_offset), old_body_arena); | |
79072805 | 5488 | } |
82bb6deb NC |
5489 | else |
5490 | #endif | |
5491 | if (type > SVt_RV) { | |
5492 | my_safefree(SvANY(sv)); | |
5493 | } | |
79072805 LW |
5494 | } |
5495 | ||
645c22ef DM |
5496 | /* |
5497 | =for apidoc sv_newref | |
5498 | ||
5499 | Increment an SV's reference count. Use the C<SvREFCNT_inc()> wrapper | |
5500 | instead. | |
5501 | ||
5502 | =cut | |
5503 | */ | |
5504 | ||
79072805 | 5505 | SV * |
864dbfa3 | 5506 | Perl_sv_newref(pTHX_ SV *sv) |
79072805 | 5507 | { |
463ee0b2 | 5508 | if (sv) |
4db098f4 | 5509 | (SvREFCNT(sv))++; |
79072805 LW |
5510 | return sv; |
5511 | } | |
5512 | ||
c461cf8f JH |
5513 | /* |
5514 | =for apidoc sv_free | |
5515 | ||
645c22ef DM |
5516 | Decrement an SV's reference count, and if it drops to zero, call |
5517 | C<sv_clear> to invoke destructors and free up any memory used by | |
5518 | the body; finally, deallocate the SV's head itself. | |
5519 | Normally called via a wrapper macro C<SvREFCNT_dec>. | |
c461cf8f JH |
5520 | |
5521 | =cut | |
5522 | */ | |
5523 | ||
79072805 | 5524 | void |
864dbfa3 | 5525 | Perl_sv_free(pTHX_ SV *sv) |
79072805 | 5526 | { |
27da23d5 | 5527 | dVAR; |
79072805 LW |
5528 | if (!sv) |
5529 | return; | |
a0d0e21e LW |
5530 | if (SvREFCNT(sv) == 0) { |
5531 | if (SvFLAGS(sv) & SVf_BREAK) | |
645c22ef DM |
5532 | /* this SV's refcnt has been artificially decremented to |
5533 | * trigger cleanup */ | |
a0d0e21e | 5534 | return; |
3280af22 | 5535 | if (PL_in_clean_all) /* All is fair */ |
1edc1566 | 5536 | return; |
d689ffdd JP |
5537 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
5538 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
5539 | SvREFCNT(sv) = (~(U32)0)/2; | |
5540 | return; | |
5541 | } | |
41e4abd8 | 5542 | if (ckWARN_d(WARN_INTERNAL)) { |
d5dede04 | 5543 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
472d47bc SB |
5544 | "Attempt to free unreferenced scalar: SV 0x%"UVxf |
5545 | pTHX__FORMAT, PTR2UV(sv) pTHX__VALUE); | |
41e4abd8 NC |
5546 | #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP |
5547 | Perl_dump_sv_child(aTHX_ sv); | |
5548 | #endif | |
5549 | } | |
79072805 LW |
5550 | return; |
5551 | } | |
4db098f4 | 5552 | if (--(SvREFCNT(sv)) > 0) |
8990e307 | 5553 | return; |
8c4d3c90 NC |
5554 | Perl_sv_free2(aTHX_ sv); |
5555 | } | |
5556 | ||
5557 | void | |
5558 | Perl_sv_free2(pTHX_ SV *sv) | |
5559 | { | |
27da23d5 | 5560 | dVAR; |
463ee0b2 LW |
5561 | #ifdef DEBUGGING |
5562 | if (SvTEMP(sv)) { | |
0453d815 | 5563 | if (ckWARN_d(WARN_DEBUGGING)) |
9014280d | 5564 | Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), |
472d47bc SB |
5565 | "Attempt to free temp prematurely: SV 0x%"UVxf |
5566 | pTHX__FORMAT, PTR2UV(sv) pTHX__VALUE); | |
79072805 | 5567 | return; |
79072805 | 5568 | } |
463ee0b2 | 5569 | #endif |
d689ffdd JP |
5570 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
5571 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
5572 | SvREFCNT(sv) = (~(U32)0)/2; | |
5573 | return; | |
5574 | } | |
79072805 | 5575 | sv_clear(sv); |
477f5d66 CS |
5576 | if (! SvREFCNT(sv)) |
5577 | del_SV(sv); | |
79072805 LW |
5578 | } |
5579 | ||
954c1994 GS |
5580 | /* |
5581 | =for apidoc sv_len | |
5582 | ||
645c22ef DM |
5583 | Returns the length of the string in the SV. Handles magic and type |
5584 | coercion. See also C<SvCUR>, which gives raw access to the xpv_cur slot. | |
954c1994 GS |
5585 | |
5586 | =cut | |
5587 | */ | |
5588 | ||
79072805 | 5589 | STRLEN |
864dbfa3 | 5590 | Perl_sv_len(pTHX_ register SV *sv) |
79072805 | 5591 | { |
463ee0b2 | 5592 | STRLEN len; |
79072805 LW |
5593 | |
5594 | if (!sv) | |
5595 | return 0; | |
5596 | ||
8990e307 | 5597 | if (SvGMAGICAL(sv)) |
565764a8 | 5598 | len = mg_length(sv); |
8990e307 | 5599 | else |
4d84ee25 | 5600 | (void)SvPV_const(sv, len); |
463ee0b2 | 5601 | return len; |
79072805 LW |
5602 | } |
5603 | ||
c461cf8f JH |
5604 | /* |
5605 | =for apidoc sv_len_utf8 | |
5606 | ||
5607 | Returns the number of characters in the string in an SV, counting wide | |
1e54db1a | 5608 | UTF-8 bytes as a single character. Handles magic and type coercion. |
c461cf8f JH |
5609 | |
5610 | =cut | |
5611 | */ | |
5612 | ||
7e8c5dac HS |
5613 | /* |
5614 | * The length is cached in PERL_UTF8_magic, in the mg_len field. Also the | |
5615 | * mg_ptr is used, by sv_pos_u2b(), see the comments of S_utf8_mg_pos_init(). | |
5616 | * (Note that the mg_len is not the length of the mg_ptr field.) | |
7a5fa8a2 | 5617 | * |
7e8c5dac HS |
5618 | */ |
5619 | ||
a0ed51b3 | 5620 | STRLEN |
864dbfa3 | 5621 | Perl_sv_len_utf8(pTHX_ register SV *sv) |
a0ed51b3 | 5622 | { |
a0ed51b3 LW |
5623 | if (!sv) |
5624 | return 0; | |
5625 | ||
a0ed51b3 | 5626 | if (SvGMAGICAL(sv)) |
b76347f2 | 5627 | return mg_length(sv); |
a0ed51b3 | 5628 | else |
b76347f2 | 5629 | { |
7e8c5dac | 5630 | STRLEN len, ulen; |
e62f0680 | 5631 | const U8 *s = (U8*)SvPV_const(sv, len); |
7e8c5dac HS |
5632 | MAGIC *mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_utf8) : 0; |
5633 | ||
e23c8137 | 5634 | if (mg && mg->mg_len != -1 && (mg->mg_len > 0 || len == 0)) { |
7e8c5dac | 5635 | ulen = mg->mg_len; |
e23c8137 JH |
5636 | #ifdef PERL_UTF8_CACHE_ASSERT |
5637 | assert(ulen == Perl_utf8_length(aTHX_ s, s + len)); | |
5638 | #endif | |
5639 | } | |
7e8c5dac HS |
5640 | else { |
5641 | ulen = Perl_utf8_length(aTHX_ s, s + len); | |
5642 | if (!mg && !SvREADONLY(sv)) { | |
5643 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
5644 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
5645 | assert(mg); | |
5646 | } | |
5647 | if (mg) | |
5648 | mg->mg_len = ulen; | |
5649 | } | |
5650 | return ulen; | |
5651 | } | |
5652 | } | |
5653 | ||
5654 | /* S_utf8_mg_pos_init() is used to initialize the mg_ptr field of | |
5655 | * a PERL_UTF8_magic. The mg_ptr is used to store the mapping | |
5656 | * between UTF-8 and byte offsets. There are two (substr offset and substr | |
5657 | * length, the i offset, PERL_MAGIC_UTF8_CACHESIZE) times two (UTF-8 offset | |
5658 | * and byte offset) cache positions. | |
5659 | * | |
5660 | * The mg_len field is used by sv_len_utf8(), see its comments. | |
5661 | * Note that the mg_len is not the length of the mg_ptr field. | |
5662 | * | |
5663 | */ | |
5664 | STATIC bool | |
245d4a47 NC |
5665 | S_utf8_mg_pos_init(pTHX_ SV *sv, MAGIC **mgp, STRLEN **cachep, I32 i, |
5666 | I32 offsetp, const U8 *s, const U8 *start) | |
7e8c5dac | 5667 | { |
7a5fa8a2 | 5668 | bool found = FALSE; |
7e8c5dac HS |
5669 | |
5670 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
8f78557a | 5671 | if (!*mgp) |
27da23d5 | 5672 | *mgp = sv_magicext(sv, 0, PERL_MAGIC_utf8, (MGVTBL*)&PL_vtbl_utf8, 0, 0); |
7e8c5dac | 5673 | assert(*mgp); |
b76347f2 | 5674 | |
7e8c5dac HS |
5675 | if ((*mgp)->mg_ptr) |
5676 | *cachep = (STRLEN *) (*mgp)->mg_ptr; | |
5677 | else { | |
a02a5408 | 5678 | Newxz(*cachep, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); |
7e8c5dac HS |
5679 | (*mgp)->mg_ptr = (char *) *cachep; |
5680 | } | |
5681 | assert(*cachep); | |
5682 | ||
a3b680e6 | 5683 | (*cachep)[i] = offsetp; |
7e8c5dac HS |
5684 | (*cachep)[i+1] = s - start; |
5685 | found = TRUE; | |
a0ed51b3 | 5686 | } |
7e8c5dac HS |
5687 | |
5688 | return found; | |
a0ed51b3 LW |
5689 | } |
5690 | ||
645c22ef | 5691 | /* |
7e8c5dac HS |
5692 | * S_utf8_mg_pos() is used to query and update mg_ptr field of |
5693 | * a PERL_UTF8_magic. The mg_ptr is used to store the mapping | |
5694 | * between UTF-8 and byte offsets. See also the comments of | |
5695 | * S_utf8_mg_pos_init(). | |
5696 | * | |
5697 | */ | |
5698 | STATIC bool | |
245d4a47 | 5699 | S_utf8_mg_pos(pTHX_ SV *sv, MAGIC **mgp, STRLEN **cachep, I32 i, I32 *offsetp, I32 uoff, const U8 **sp, const U8 *start, const U8 *send) |
7e8c5dac HS |
5700 | { |
5701 | bool found = FALSE; | |
5702 | ||
5703 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
5704 | if (!*mgp) | |
5705 | *mgp = mg_find(sv, PERL_MAGIC_utf8); | |
5706 | if (*mgp && (*mgp)->mg_ptr) { | |
5707 | *cachep = (STRLEN *) (*mgp)->mg_ptr; | |
e23c8137 | 5708 | ASSERT_UTF8_CACHE(*cachep); |
667208dd | 5709 | if ((*cachep)[i] == (STRLEN)uoff) /* An exact match. */ |
7a5fa8a2 | 5710 | found = TRUE; |
7e8c5dac HS |
5711 | else { /* We will skip to the right spot. */ |
5712 | STRLEN forw = 0; | |
5713 | STRLEN backw = 0; | |
a3b680e6 | 5714 | const U8* p = NULL; |
7e8c5dac HS |
5715 | |
5716 | /* The assumption is that going backward is half | |
5717 | * the speed of going forward (that's where the | |
5718 | * 2 * backw in the below comes from). (The real | |
5719 | * figure of course depends on the UTF-8 data.) */ | |
5720 | ||
667208dd | 5721 | if ((*cachep)[i] > (STRLEN)uoff) { |
7e8c5dac | 5722 | forw = uoff; |
667208dd | 5723 | backw = (*cachep)[i] - (STRLEN)uoff; |
7e8c5dac HS |
5724 | |
5725 | if (forw < 2 * backw) | |
5726 | p = start; | |
5727 | else | |
5728 | p = start + (*cachep)[i+1]; | |
5729 | } | |
5730 | /* Try this only for the substr offset (i == 0), | |
5731 | * not for the substr length (i == 2). */ | |
5732 | else if (i == 0) { /* (*cachep)[i] < uoff */ | |
a3b680e6 | 5733 | const STRLEN ulen = sv_len_utf8(sv); |
7e8c5dac | 5734 | |
667208dd JH |
5735 | if ((STRLEN)uoff < ulen) { |
5736 | forw = (STRLEN)uoff - (*cachep)[i]; | |
5737 | backw = ulen - (STRLEN)uoff; | |
7e8c5dac HS |
5738 | |
5739 | if (forw < 2 * backw) | |
5740 | p = start + (*cachep)[i+1]; | |
5741 | else | |
5742 | p = send; | |
5743 | } | |
5744 | ||
5745 | /* If the string is not long enough for uoff, | |
5746 | * we could extend it, but not at this low a level. */ | |
5747 | } | |
5748 | ||
5749 | if (p) { | |
5750 | if (forw < 2 * backw) { | |
5751 | while (forw--) | |
5752 | p += UTF8SKIP(p); | |
5753 | } | |
5754 | else { | |
5755 | while (backw--) { | |
5756 | p--; | |
5757 | while (UTF8_IS_CONTINUATION(*p)) | |
5758 | p--; | |
5759 | } | |
5760 | } | |
5761 | ||
5762 | /* Update the cache. */ | |
667208dd | 5763 | (*cachep)[i] = (STRLEN)uoff; |
7e8c5dac | 5764 | (*cachep)[i+1] = p - start; |
8f78557a AE |
5765 | |
5766 | /* Drop the stale "length" cache */ | |
5767 | if (i == 0) { | |
5768 | (*cachep)[2] = 0; | |
5769 | (*cachep)[3] = 0; | |
5770 | } | |
7a5fa8a2 | 5771 | |
7e8c5dac HS |
5772 | found = TRUE; |
5773 | } | |
5774 | } | |
5775 | if (found) { /* Setup the return values. */ | |
5776 | *offsetp = (*cachep)[i+1]; | |
5777 | *sp = start + *offsetp; | |
5778 | if (*sp >= send) { | |
5779 | *sp = send; | |
5780 | *offsetp = send - start; | |
5781 | } | |
5782 | else if (*sp < start) { | |
5783 | *sp = start; | |
5784 | *offsetp = 0; | |
5785 | } | |
5786 | } | |
5787 | } | |
e23c8137 JH |
5788 | #ifdef PERL_UTF8_CACHE_ASSERT |
5789 | if (found) { | |
5790 | U8 *s = start; | |
5791 | I32 n = uoff; | |
5792 | ||
5793 | while (n-- && s < send) | |
5794 | s += UTF8SKIP(s); | |
5795 | ||
5796 | if (i == 0) { | |
5797 | assert(*offsetp == s - start); | |
5798 | assert((*cachep)[0] == (STRLEN)uoff); | |
5799 | assert((*cachep)[1] == *offsetp); | |
5800 | } | |
5801 | ASSERT_UTF8_CACHE(*cachep); | |
5802 | } | |
5803 | #endif | |
7e8c5dac | 5804 | } |
e23c8137 | 5805 | |
7e8c5dac HS |
5806 | return found; |
5807 | } | |
7a5fa8a2 | 5808 | |
7e8c5dac | 5809 | /* |
645c22ef DM |
5810 | =for apidoc sv_pos_u2b |
5811 | ||
1e54db1a | 5812 | Converts the value pointed to by offsetp from a count of UTF-8 chars from |
645c22ef DM |
5813 | the start of the string, to a count of the equivalent number of bytes; if |
5814 | lenp is non-zero, it does the same to lenp, but this time starting from | |
5815 | the offset, rather than from the start of the string. Handles magic and | |
5816 | type coercion. | |
5817 | ||
5818 | =cut | |
5819 | */ | |
5820 | ||
7e8c5dac HS |
5821 | /* |
5822 | * sv_pos_u2b() uses, like sv_pos_b2u(), the mg_ptr of the potential | |
5823 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
5824 | * byte offsets. See also the comments of S_utf8_mg_pos(). | |
5825 | * | |
5826 | */ | |
5827 | ||
a0ed51b3 | 5828 | void |
864dbfa3 | 5829 | Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp) |
a0ed51b3 | 5830 | { |
245d4a47 | 5831 | const U8 *start; |
a0ed51b3 LW |
5832 | STRLEN len; |
5833 | ||
5834 | if (!sv) | |
5835 | return; | |
5836 | ||
245d4a47 | 5837 | start = (U8*)SvPV_const(sv, len); |
7e8c5dac | 5838 | if (len) { |
b464bac0 AL |
5839 | STRLEN boffset = 0; |
5840 | STRLEN *cache = 0; | |
245d4a47 NC |
5841 | const U8 *s = start; |
5842 | I32 uoffset = *offsetp; | |
9d4ba2ae | 5843 | const U8 * const send = s + len; |
245d4a47 NC |
5844 | MAGIC *mg = 0; |
5845 | bool found = FALSE; | |
7e8c5dac | 5846 | |
bdf77a2a | 5847 | if (utf8_mg_pos(sv, &mg, &cache, 0, offsetp, *offsetp, &s, start, send)) |
7e8c5dac HS |
5848 | found = TRUE; |
5849 | if (!found && uoffset > 0) { | |
5850 | while (s < send && uoffset--) | |
5851 | s += UTF8SKIP(s); | |
5852 | if (s >= send) | |
5853 | s = send; | |
a3b680e6 | 5854 | if (utf8_mg_pos_init(sv, &mg, &cache, 0, *offsetp, s, start)) |
7e8c5dac HS |
5855 | boffset = cache[1]; |
5856 | *offsetp = s - start; | |
5857 | } | |
5858 | if (lenp) { | |
5859 | found = FALSE; | |
5860 | start = s; | |
ec062429 | 5861 | if (utf8_mg_pos(sv, &mg, &cache, 2, lenp, *lenp, &s, start, send)) { |
7e8c5dac HS |
5862 | *lenp -= boffset; |
5863 | found = TRUE; | |
5864 | } | |
5865 | if (!found && *lenp > 0) { | |
5866 | I32 ulen = *lenp; | |
5867 | if (ulen > 0) | |
5868 | while (s < send && ulen--) | |
5869 | s += UTF8SKIP(s); | |
5870 | if (s >= send) | |
5871 | s = send; | |
a3b680e6 | 5872 | utf8_mg_pos_init(sv, &mg, &cache, 2, *lenp, s, start); |
7e8c5dac HS |
5873 | } |
5874 | *lenp = s - start; | |
5875 | } | |
e23c8137 | 5876 | ASSERT_UTF8_CACHE(cache); |
7e8c5dac HS |
5877 | } |
5878 | else { | |
5879 | *offsetp = 0; | |
5880 | if (lenp) | |
5881 | *lenp = 0; | |
a0ed51b3 | 5882 | } |
e23c8137 | 5883 | |
a0ed51b3 LW |
5884 | return; |
5885 | } | |
5886 | ||
645c22ef DM |
5887 | /* |
5888 | =for apidoc sv_pos_b2u | |
5889 | ||
5890 | Converts the value pointed to by offsetp from a count of bytes from the | |
1e54db1a | 5891 | start of the string, to a count of the equivalent number of UTF-8 chars. |
645c22ef DM |
5892 | Handles magic and type coercion. |
5893 | ||
5894 | =cut | |
5895 | */ | |
5896 | ||
7e8c5dac HS |
5897 | /* |
5898 | * sv_pos_b2u() uses, like sv_pos_u2b(), the mg_ptr of the potential | |
5899 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
5900 | * byte offsets. See also the comments of S_utf8_mg_pos(). | |
5901 | * | |
5902 | */ | |
5903 | ||
a0ed51b3 | 5904 | void |
7e8c5dac | 5905 | Perl_sv_pos_b2u(pTHX_ register SV* sv, I32* offsetp) |
a0ed51b3 | 5906 | { |
83003860 | 5907 | const U8* s; |
a0ed51b3 LW |
5908 | STRLEN len; |
5909 | ||
5910 | if (!sv) | |
5911 | return; | |
5912 | ||
83003860 | 5913 | s = (const U8*)SvPV_const(sv, len); |
eb160463 | 5914 | if ((I32)len < *offsetp) |
a0dbb045 | 5915 | Perl_croak(aTHX_ "panic: sv_pos_b2u: bad byte offset"); |
7e8c5dac | 5916 | else { |
83003860 | 5917 | const U8* send = s + *offsetp; |
7e8c5dac HS |
5918 | MAGIC* mg = NULL; |
5919 | STRLEN *cache = NULL; | |
5920 | ||
5921 | len = 0; | |
5922 | ||
5923 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
5924 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
5925 | if (mg && mg->mg_ptr) { | |
5926 | cache = (STRLEN *) mg->mg_ptr; | |
c5661c80 | 5927 | if (cache[1] == (STRLEN)*offsetp) { |
7e8c5dac HS |
5928 | /* An exact match. */ |
5929 | *offsetp = cache[0]; | |
5930 | ||
5931 | return; | |
5932 | } | |
c5661c80 | 5933 | else if (cache[1] < (STRLEN)*offsetp) { |
7e8c5dac HS |
5934 | /* We already know part of the way. */ |
5935 | len = cache[0]; | |
5936 | s += cache[1]; | |
7a5fa8a2 | 5937 | /* Let the below loop do the rest. */ |
7e8c5dac HS |
5938 | } |
5939 | else { /* cache[1] > *offsetp */ | |
5940 | /* We already know all of the way, now we may | |
5941 | * be able to walk back. The same assumption | |
5942 | * is made as in S_utf8_mg_pos(), namely that | |
5943 | * walking backward is twice slower than | |
5944 | * walking forward. */ | |
9d4ba2ae | 5945 | const STRLEN forw = *offsetp; |
7e8c5dac HS |
5946 | STRLEN backw = cache[1] - *offsetp; |
5947 | ||
5948 | if (!(forw < 2 * backw)) { | |
83003860 | 5949 | const U8 *p = s + cache[1]; |
7e8c5dac | 5950 | STRLEN ubackw = 0; |
7a5fa8a2 | 5951 | |
a5b510f2 AE |
5952 | cache[1] -= backw; |
5953 | ||
7e8c5dac HS |
5954 | while (backw--) { |
5955 | p--; | |
0aeb64d0 | 5956 | while (UTF8_IS_CONTINUATION(*p)) { |
7e8c5dac | 5957 | p--; |
0aeb64d0 JH |
5958 | backw--; |
5959 | } | |
7e8c5dac HS |
5960 | ubackw++; |
5961 | } | |
5962 | ||
5963 | cache[0] -= ubackw; | |
0aeb64d0 | 5964 | *offsetp = cache[0]; |
a67d7df9 TS |
5965 | |
5966 | /* Drop the stale "length" cache */ | |
5967 | cache[2] = 0; | |
5968 | cache[3] = 0; | |
5969 | ||
0aeb64d0 | 5970 | return; |
7e8c5dac HS |
5971 | } |
5972 | } | |
5973 | } | |
e23c8137 | 5974 | ASSERT_UTF8_CACHE(cache); |
a0dbb045 | 5975 | } |
7e8c5dac HS |
5976 | |
5977 | while (s < send) { | |
5978 | STRLEN n = 1; | |
5979 | ||
5980 | /* Call utf8n_to_uvchr() to validate the sequence | |
5981 | * (unless a simple non-UTF character) */ | |
5982 | if (!UTF8_IS_INVARIANT(*s)) | |
5983 | utf8n_to_uvchr(s, UTF8SKIP(s), &n, 0); | |
5984 | if (n > 0) { | |
5985 | s += n; | |
5986 | len++; | |
5987 | } | |
5988 | else | |
5989 | break; | |
5990 | } | |
5991 | ||
5992 | if (!SvREADONLY(sv)) { | |
5993 | if (!mg) { | |
5994 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
5995 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
5996 | } | |
5997 | assert(mg); | |
5998 | ||
5999 | if (!mg->mg_ptr) { | |
a02a5408 | 6000 | Newxz(cache, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); |
7e8c5dac HS |
6001 | mg->mg_ptr = (char *) cache; |
6002 | } | |
6003 | assert(cache); | |
6004 | ||
6005 | cache[0] = len; | |
6006 | cache[1] = *offsetp; | |
a67d7df9 TS |
6007 | /* Drop the stale "length" cache */ |
6008 | cache[2] = 0; | |
6009 | cache[3] = 0; | |
7e8c5dac HS |
6010 | } |
6011 | ||
6012 | *offsetp = len; | |
a0ed51b3 | 6013 | } |
a0ed51b3 LW |
6014 | return; |
6015 | } | |
6016 | ||
954c1994 GS |
6017 | /* |
6018 | =for apidoc sv_eq | |
6019 | ||
6020 | Returns a boolean indicating whether the strings in the two SVs are | |
645c22ef DM |
6021 | identical. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
6022 | coerce its args to strings if necessary. | |
954c1994 GS |
6023 | |
6024 | =cut | |
6025 | */ | |
6026 | ||
79072805 | 6027 | I32 |
e01b9e88 | 6028 | Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2) |
79072805 | 6029 | { |
e1ec3a88 | 6030 | const char *pv1; |
463ee0b2 | 6031 | STRLEN cur1; |
e1ec3a88 | 6032 | const char *pv2; |
463ee0b2 | 6033 | STRLEN cur2; |
e01b9e88 | 6034 | I32 eq = 0; |
553e1bcc AT |
6035 | char *tpv = Nullch; |
6036 | SV* svrecode = Nullsv; | |
79072805 | 6037 | |
e01b9e88 | 6038 | if (!sv1) { |
79072805 LW |
6039 | pv1 = ""; |
6040 | cur1 = 0; | |
6041 | } | |
463ee0b2 | 6042 | else |
4d84ee25 | 6043 | pv1 = SvPV_const(sv1, cur1); |
79072805 | 6044 | |
e01b9e88 SC |
6045 | if (!sv2){ |
6046 | pv2 = ""; | |
6047 | cur2 = 0; | |
92d29cee | 6048 | } |
e01b9e88 | 6049 | else |
4d84ee25 | 6050 | pv2 = SvPV_const(sv2, cur2); |
79072805 | 6051 | |
cf48d248 | 6052 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
6053 | /* Differing utf8ness. |
6054 | * Do not UTF8size the comparands as a side-effect. */ | |
6055 | if (PL_encoding) { | |
6056 | if (SvUTF8(sv1)) { | |
553e1bcc AT |
6057 | svrecode = newSVpvn(pv2, cur2); |
6058 | sv_recode_to_utf8(svrecode, PL_encoding); | |
93524f2b | 6059 | pv2 = SvPV_const(svrecode, cur2); |
799ef3cb JH |
6060 | } |
6061 | else { | |
553e1bcc AT |
6062 | svrecode = newSVpvn(pv1, cur1); |
6063 | sv_recode_to_utf8(svrecode, PL_encoding); | |
93524f2b | 6064 | pv1 = SvPV_const(svrecode, cur1); |
799ef3cb JH |
6065 | } |
6066 | /* Now both are in UTF-8. */ | |
0a1bd7ac DM |
6067 | if (cur1 != cur2) { |
6068 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6069 | return FALSE; |
0a1bd7ac | 6070 | } |
799ef3cb JH |
6071 | } |
6072 | else { | |
6073 | bool is_utf8 = TRUE; | |
6074 | ||
6075 | if (SvUTF8(sv1)) { | |
6076 | /* sv1 is the UTF-8 one, | |
6077 | * if is equal it must be downgrade-able */ | |
9d4ba2ae | 6078 | char * const pv = (char*)bytes_from_utf8((const U8*)pv1, |
799ef3cb JH |
6079 | &cur1, &is_utf8); |
6080 | if (pv != pv1) | |
553e1bcc | 6081 | pv1 = tpv = pv; |
799ef3cb JH |
6082 | } |
6083 | else { | |
6084 | /* sv2 is the UTF-8 one, | |
6085 | * if is equal it must be downgrade-able */ | |
9d4ba2ae | 6086 | char * const pv = (char *)bytes_from_utf8((const U8*)pv2, |
799ef3cb JH |
6087 | &cur2, &is_utf8); |
6088 | if (pv != pv2) | |
553e1bcc | 6089 | pv2 = tpv = pv; |
799ef3cb JH |
6090 | } |
6091 | if (is_utf8) { | |
6092 | /* Downgrade not possible - cannot be eq */ | |
bf694877 | 6093 | assert (tpv == 0); |
799ef3cb JH |
6094 | return FALSE; |
6095 | } | |
6096 | } | |
cf48d248 JH |
6097 | } |
6098 | ||
6099 | if (cur1 == cur2) | |
765f542d | 6100 | eq = (pv1 == pv2) || memEQ(pv1, pv2, cur1); |
e01b9e88 | 6101 | |
553e1bcc AT |
6102 | if (svrecode) |
6103 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6104 | |
553e1bcc AT |
6105 | if (tpv) |
6106 | Safefree(tpv); | |
cf48d248 | 6107 | |
e01b9e88 | 6108 | return eq; |
79072805 LW |
6109 | } |
6110 | ||
954c1994 GS |
6111 | /* |
6112 | =for apidoc sv_cmp | |
6113 | ||
6114 | Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the | |
6115 | string in C<sv1> is less than, equal to, or greater than the string in | |
645c22ef DM |
6116 | C<sv2>. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
6117 | coerce its args to strings if necessary. See also C<sv_cmp_locale>. | |
954c1994 GS |
6118 | |
6119 | =cut | |
6120 | */ | |
6121 | ||
79072805 | 6122 | I32 |
e01b9e88 | 6123 | Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2) |
79072805 | 6124 | { |
560a288e | 6125 | STRLEN cur1, cur2; |
e1ec3a88 AL |
6126 | const char *pv1, *pv2; |
6127 | char *tpv = Nullch; | |
cf48d248 | 6128 | I32 cmp; |
553e1bcc | 6129 | SV *svrecode = Nullsv; |
560a288e | 6130 | |
e01b9e88 SC |
6131 | if (!sv1) { |
6132 | pv1 = ""; | |
560a288e GS |
6133 | cur1 = 0; |
6134 | } | |
e01b9e88 | 6135 | else |
4d84ee25 | 6136 | pv1 = SvPV_const(sv1, cur1); |
560a288e | 6137 | |
553e1bcc | 6138 | if (!sv2) { |
e01b9e88 | 6139 | pv2 = ""; |
560a288e GS |
6140 | cur2 = 0; |
6141 | } | |
e01b9e88 | 6142 | else |
4d84ee25 | 6143 | pv2 = SvPV_const(sv2, cur2); |
79072805 | 6144 | |
cf48d248 | 6145 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
6146 | /* Differing utf8ness. |
6147 | * Do not UTF8size the comparands as a side-effect. */ | |
cf48d248 | 6148 | if (SvUTF8(sv1)) { |
799ef3cb | 6149 | if (PL_encoding) { |
553e1bcc AT |
6150 | svrecode = newSVpvn(pv2, cur2); |
6151 | sv_recode_to_utf8(svrecode, PL_encoding); | |
93524f2b | 6152 | pv2 = SvPV_const(svrecode, cur2); |
799ef3cb JH |
6153 | } |
6154 | else { | |
e1ec3a88 | 6155 | pv2 = tpv = (char*)bytes_to_utf8((const U8*)pv2, &cur2); |
799ef3cb | 6156 | } |
cf48d248 JH |
6157 | } |
6158 | else { | |
799ef3cb | 6159 | if (PL_encoding) { |
553e1bcc AT |
6160 | svrecode = newSVpvn(pv1, cur1); |
6161 | sv_recode_to_utf8(svrecode, PL_encoding); | |
93524f2b | 6162 | pv1 = SvPV_const(svrecode, cur1); |
799ef3cb JH |
6163 | } |
6164 | else { | |
e1ec3a88 | 6165 | pv1 = tpv = (char*)bytes_to_utf8((const U8*)pv1, &cur1); |
799ef3cb | 6166 | } |
cf48d248 JH |
6167 | } |
6168 | } | |
6169 | ||
e01b9e88 | 6170 | if (!cur1) { |
cf48d248 | 6171 | cmp = cur2 ? -1 : 0; |
e01b9e88 | 6172 | } else if (!cur2) { |
cf48d248 JH |
6173 | cmp = 1; |
6174 | } else { | |
e1ec3a88 | 6175 | const I32 retval = memcmp((const void*)pv1, (const void*)pv2, cur1 < cur2 ? cur1 : cur2); |
e01b9e88 SC |
6176 | |
6177 | if (retval) { | |
cf48d248 | 6178 | cmp = retval < 0 ? -1 : 1; |
e01b9e88 | 6179 | } else if (cur1 == cur2) { |
cf48d248 JH |
6180 | cmp = 0; |
6181 | } else { | |
6182 | cmp = cur1 < cur2 ? -1 : 1; | |
e01b9e88 | 6183 | } |
cf48d248 | 6184 | } |
16660edb | 6185 | |
553e1bcc AT |
6186 | if (svrecode) |
6187 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6188 | |
553e1bcc AT |
6189 | if (tpv) |
6190 | Safefree(tpv); | |
cf48d248 JH |
6191 | |
6192 | return cmp; | |
bbce6d69 | 6193 | } |
16660edb | 6194 | |
c461cf8f JH |
6195 | /* |
6196 | =for apidoc sv_cmp_locale | |
6197 | ||
645c22ef DM |
6198 | Compares the strings in two SVs in a locale-aware manner. Is UTF-8 and |
6199 | 'use bytes' aware, handles get magic, and will coerce its args to strings | |
6200 | if necessary. See also C<sv_cmp_locale>. See also C<sv_cmp>. | |
c461cf8f JH |
6201 | |
6202 | =cut | |
6203 | */ | |
6204 | ||
bbce6d69 | 6205 | I32 |
864dbfa3 | 6206 | Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2) |
bbce6d69 | 6207 | { |
36477c24 | 6208 | #ifdef USE_LOCALE_COLLATE |
16660edb | 6209 | |
bbce6d69 | 6210 | char *pv1, *pv2; |
6211 | STRLEN len1, len2; | |
6212 | I32 retval; | |
16660edb | 6213 | |
3280af22 | 6214 | if (PL_collation_standard) |
bbce6d69 | 6215 | goto raw_compare; |
16660edb | 6216 | |
bbce6d69 | 6217 | len1 = 0; |
8ac85365 | 6218 | pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL; |
bbce6d69 | 6219 | len2 = 0; |
8ac85365 | 6220 | pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL; |
16660edb | 6221 | |
bbce6d69 | 6222 | if (!pv1 || !len1) { |
6223 | if (pv2 && len2) | |
6224 | return -1; | |
6225 | else | |
6226 | goto raw_compare; | |
6227 | } | |
6228 | else { | |
6229 | if (!pv2 || !len2) | |
6230 | return 1; | |
6231 | } | |
16660edb | 6232 | |
bbce6d69 | 6233 | retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2); |
16660edb | 6234 | |
bbce6d69 | 6235 | if (retval) |
16660edb | 6236 | return retval < 0 ? -1 : 1; |
6237 | ||
bbce6d69 | 6238 | /* |
6239 | * When the result of collation is equality, that doesn't mean | |
6240 | * that there are no differences -- some locales exclude some | |
6241 | * characters from consideration. So to avoid false equalities, | |
6242 | * we use the raw string as a tiebreaker. | |
6243 | */ | |
16660edb | 6244 | |
bbce6d69 | 6245 | raw_compare: |
6246 | /* FALL THROUGH */ | |
16660edb | 6247 | |
36477c24 | 6248 | #endif /* USE_LOCALE_COLLATE */ |
16660edb | 6249 | |
bbce6d69 | 6250 | return sv_cmp(sv1, sv2); |
6251 | } | |
79072805 | 6252 | |
645c22ef | 6253 | |
36477c24 | 6254 | #ifdef USE_LOCALE_COLLATE |
645c22ef | 6255 | |
7a4c00b4 | 6256 | /* |
645c22ef DM |
6257 | =for apidoc sv_collxfrm |
6258 | ||
6259 | Add Collate Transform magic to an SV if it doesn't already have it. | |
6260 | ||
6261 | Any scalar variable may carry PERL_MAGIC_collxfrm magic that contains the | |
6262 | scalar data of the variable, but transformed to such a format that a normal | |
6263 | memory comparison can be used to compare the data according to the locale | |
6264 | settings. | |
6265 | ||
6266 | =cut | |
6267 | */ | |
6268 | ||
bbce6d69 | 6269 | char * |
864dbfa3 | 6270 | Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp) |
bbce6d69 | 6271 | { |
7a4c00b4 | 6272 | MAGIC *mg; |
16660edb | 6273 | |
14befaf4 | 6274 | mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_collxfrm) : (MAGIC *) NULL; |
3280af22 | 6275 | if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) { |
93524f2b NC |
6276 | const char *s; |
6277 | char *xf; | |
bbce6d69 | 6278 | STRLEN len, xlen; |
6279 | ||
7a4c00b4 | 6280 | if (mg) |
6281 | Safefree(mg->mg_ptr); | |
93524f2b | 6282 | s = SvPV_const(sv, len); |
bbce6d69 | 6283 | if ((xf = mem_collxfrm(s, len, &xlen))) { |
ff0cee69 | 6284 | if (SvREADONLY(sv)) { |
6285 | SAVEFREEPV(xf); | |
6286 | *nxp = xlen; | |
3280af22 | 6287 | return xf + sizeof(PL_collation_ix); |
ff0cee69 | 6288 | } |
7a4c00b4 | 6289 | if (! mg) { |
14befaf4 DM |
6290 | sv_magic(sv, 0, PERL_MAGIC_collxfrm, 0, 0); |
6291 | mg = mg_find(sv, PERL_MAGIC_collxfrm); | |
7a4c00b4 | 6292 | assert(mg); |
bbce6d69 | 6293 | } |
7a4c00b4 | 6294 | mg->mg_ptr = xf; |
565764a8 | 6295 | mg->mg_len = xlen; |
7a4c00b4 | 6296 | } |
6297 | else { | |
ff0cee69 | 6298 | if (mg) { |
6299 | mg->mg_ptr = NULL; | |
565764a8 | 6300 | mg->mg_len = -1; |
ff0cee69 | 6301 | } |
bbce6d69 | 6302 | } |
6303 | } | |
7a4c00b4 | 6304 | if (mg && mg->mg_ptr) { |
565764a8 | 6305 | *nxp = mg->mg_len; |
3280af22 | 6306 | return mg->mg_ptr + sizeof(PL_collation_ix); |
bbce6d69 | 6307 | } |
6308 | else { | |
6309 | *nxp = 0; | |
6310 | return NULL; | |
16660edb | 6311 | } |
79072805 LW |
6312 | } |
6313 | ||
36477c24 | 6314 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 6315 | |
c461cf8f JH |
6316 | /* |
6317 | =for apidoc sv_gets | |
6318 | ||
6319 | Get a line from the filehandle and store it into the SV, optionally | |
6320 | appending to the currently-stored string. | |
6321 | ||
6322 | =cut | |
6323 | */ | |
6324 | ||
79072805 | 6325 | char * |
864dbfa3 | 6326 | Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append) |
79072805 | 6327 | { |
e1ec3a88 | 6328 | const char *rsptr; |
c07a80fd | 6329 | STRLEN rslen; |
6330 | register STDCHAR rslast; | |
6331 | register STDCHAR *bp; | |
6332 | register I32 cnt; | |
9c5ffd7c | 6333 | I32 i = 0; |
8bfdd7d9 | 6334 | I32 rspara = 0; |
e311fd51 | 6335 | I32 recsize; |
c07a80fd | 6336 | |
bc44a8a2 NC |
6337 | if (SvTHINKFIRST(sv)) |
6338 | sv_force_normal_flags(sv, append ? 0 : SV_COW_DROP_PV); | |
765f542d NC |
6339 | /* XXX. If you make this PVIV, then copy on write can copy scalars read |
6340 | from <>. | |
6341 | However, perlbench says it's slower, because the existing swipe code | |
6342 | is faster than copy on write. | |
6343 | Swings and roundabouts. */ | |
862a34c6 | 6344 | SvUPGRADE(sv, SVt_PV); |
99491443 | 6345 | |
ff68c719 | 6346 | SvSCREAM_off(sv); |
efd8b2ba AE |
6347 | |
6348 | if (append) { | |
6349 | if (PerlIO_isutf8(fp)) { | |
6350 | if (!SvUTF8(sv)) { | |
6351 | sv_utf8_upgrade_nomg(sv); | |
6352 | sv_pos_u2b(sv,&append,0); | |
6353 | } | |
6354 | } else if (SvUTF8(sv)) { | |
1b6737cc | 6355 | SV * const tsv = NEWSV(0,0); |
efd8b2ba AE |
6356 | sv_gets(tsv, fp, 0); |
6357 | sv_utf8_upgrade_nomg(tsv); | |
6358 | SvCUR_set(sv,append); | |
6359 | sv_catsv(sv,tsv); | |
6360 | sv_free(tsv); | |
6361 | goto return_string_or_null; | |
6362 | } | |
6363 | } | |
6364 | ||
6365 | SvPOK_only(sv); | |
6366 | if (PerlIO_isutf8(fp)) | |
6367 | SvUTF8_on(sv); | |
c07a80fd | 6368 | |
923e4eb5 | 6369 | if (IN_PERL_COMPILETIME) { |
8bfdd7d9 HS |
6370 | /* we always read code in line mode */ |
6371 | rsptr = "\n"; | |
6372 | rslen = 1; | |
6373 | } | |
6374 | else if (RsSNARF(PL_rs)) { | |
7a5fa8a2 NIS |
6375 | /* If it is a regular disk file use size from stat() as estimate |
6376 | of amount we are going to read - may result in malloc-ing | |
6377 | more memory than we realy need if layers bellow reduce | |
e468d35b NIS |
6378 | size we read (e.g. CRLF or a gzip layer) |
6379 | */ | |
e311fd51 | 6380 | Stat_t st; |
e468d35b | 6381 | if (!PerlLIO_fstat(PerlIO_fileno(fp), &st) && S_ISREG(st.st_mode)) { |
f54cb97a | 6382 | const Off_t offset = PerlIO_tell(fp); |
58f1856e | 6383 | if (offset != (Off_t) -1 && st.st_size + append > offset) { |
e468d35b NIS |
6384 | (void) SvGROW(sv, (STRLEN)((st.st_size - offset) + append + 1)); |
6385 | } | |
6386 | } | |
c07a80fd | 6387 | rsptr = NULL; |
6388 | rslen = 0; | |
6389 | } | |
3280af22 | 6390 | else if (RsRECORD(PL_rs)) { |
e311fd51 | 6391 | I32 bytesread; |
5b2b9c68 HM |
6392 | char *buffer; |
6393 | ||
6394 | /* Grab the size of the record we're getting */ | |
3280af22 | 6395 | recsize = SvIV(SvRV(PL_rs)); |
e311fd51 | 6396 | buffer = SvGROW(sv, (STRLEN)(recsize + append + 1)) + append; |
5b2b9c68 HM |
6397 | /* Go yank in */ |
6398 | #ifdef VMS | |
6399 | /* VMS wants read instead of fread, because fread doesn't respect */ | |
6400 | /* RMS record boundaries. This is not necessarily a good thing to be */ | |
e468d35b NIS |
6401 | /* doing, but we've got no other real choice - except avoid stdio |
6402 | as implementation - perhaps write a :vms layer ? | |
6403 | */ | |
5b2b9c68 HM |
6404 | bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize); |
6405 | #else | |
6406 | bytesread = PerlIO_read(fp, buffer, recsize); | |
6407 | #endif | |
27e6ca2d AE |
6408 | if (bytesread < 0) |
6409 | bytesread = 0; | |
e311fd51 | 6410 | SvCUR_set(sv, bytesread += append); |
e670df4e | 6411 | buffer[bytesread] = '\0'; |
efd8b2ba | 6412 | goto return_string_or_null; |
5b2b9c68 | 6413 | } |
3280af22 | 6414 | else if (RsPARA(PL_rs)) { |
c07a80fd | 6415 | rsptr = "\n\n"; |
6416 | rslen = 2; | |
8bfdd7d9 | 6417 | rspara = 1; |
c07a80fd | 6418 | } |
7d59b7e4 NIS |
6419 | else { |
6420 | /* Get $/ i.e. PL_rs into same encoding as stream wants */ | |
6421 | if (PerlIO_isutf8(fp)) { | |
6422 | rsptr = SvPVutf8(PL_rs, rslen); | |
6423 | } | |
6424 | else { | |
6425 | if (SvUTF8(PL_rs)) { | |
6426 | if (!sv_utf8_downgrade(PL_rs, TRUE)) { | |
6427 | Perl_croak(aTHX_ "Wide character in $/"); | |
6428 | } | |
6429 | } | |
93524f2b | 6430 | rsptr = SvPV_const(PL_rs, rslen); |
7d59b7e4 NIS |
6431 | } |
6432 | } | |
6433 | ||
c07a80fd | 6434 | rslast = rslen ? rsptr[rslen - 1] : '\0'; |
6435 | ||
8bfdd7d9 | 6436 | if (rspara) { /* have to do this both before and after */ |
79072805 | 6437 | do { /* to make sure file boundaries work right */ |
760ac839 | 6438 | if (PerlIO_eof(fp)) |
a0d0e21e | 6439 | return 0; |
760ac839 | 6440 | i = PerlIO_getc(fp); |
79072805 | 6441 | if (i != '\n') { |
a0d0e21e LW |
6442 | if (i == -1) |
6443 | return 0; | |
760ac839 | 6444 | PerlIO_ungetc(fp,i); |
79072805 LW |
6445 | break; |
6446 | } | |
6447 | } while (i != EOF); | |
6448 | } | |
c07a80fd | 6449 | |
760ac839 LW |
6450 | /* See if we know enough about I/O mechanism to cheat it ! */ |
6451 | ||
6452 | /* This used to be #ifdef test - it is made run-time test for ease | |
1c846c1f | 6453 | of abstracting out stdio interface. One call should be cheap |
760ac839 LW |
6454 | enough here - and may even be a macro allowing compile |
6455 | time optimization. | |
6456 | */ | |
6457 | ||
6458 | if (PerlIO_fast_gets(fp)) { | |
6459 | ||
6460 | /* | |
6461 | * We're going to steal some values from the stdio struct | |
6462 | * and put EVERYTHING in the innermost loop into registers. | |
6463 | */ | |
6464 | register STDCHAR *ptr; | |
6465 | STRLEN bpx; | |
6466 | I32 shortbuffered; | |
6467 | ||
16660edb | 6468 | #if defined(VMS) && defined(PERLIO_IS_STDIO) |
6469 | /* An ungetc()d char is handled separately from the regular | |
6470 | * buffer, so we getc() it back out and stuff it in the buffer. | |
6471 | */ | |
6472 | i = PerlIO_getc(fp); | |
6473 | if (i == EOF) return 0; | |
6474 | *(--((*fp)->_ptr)) = (unsigned char) i; | |
6475 | (*fp)->_cnt++; | |
6476 | #endif | |
c07a80fd | 6477 | |
c2960299 | 6478 | /* Here is some breathtakingly efficient cheating */ |
c07a80fd | 6479 | |
a20bf0c3 | 6480 | cnt = PerlIO_get_cnt(fp); /* get count into register */ |
e468d35b | 6481 | /* make sure we have the room */ |
7a5fa8a2 | 6482 | if ((I32)(SvLEN(sv) - append) <= cnt + 1) { |
e468d35b | 6483 | /* Not room for all of it |
7a5fa8a2 | 6484 | if we are looking for a separator and room for some |
e468d35b NIS |
6485 | */ |
6486 | if (rslen && cnt > 80 && (I32)SvLEN(sv) > append) { | |
7a5fa8a2 | 6487 | /* just process what we have room for */ |
79072805 LW |
6488 | shortbuffered = cnt - SvLEN(sv) + append + 1; |
6489 | cnt -= shortbuffered; | |
6490 | } | |
6491 | else { | |
6492 | shortbuffered = 0; | |
bbce6d69 | 6493 | /* remember that cnt can be negative */ |
eb160463 | 6494 | SvGROW(sv, (STRLEN)(append + (cnt <= 0 ? 2 : (cnt + 1)))); |
79072805 LW |
6495 | } |
6496 | } | |
7a5fa8a2 | 6497 | else |
79072805 | 6498 | shortbuffered = 0; |
3f7c398e | 6499 | bp = (STDCHAR*)SvPVX_const(sv) + append; /* move these two too to registers */ |
a20bf0c3 | 6500 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); |
16660edb | 6501 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6502 | "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
16660edb | 6503 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
ba7abf9d | 6504 | "Screamer: entering: PerlIO * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6505 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6506 | PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0))); |
79072805 LW |
6507 | for (;;) { |
6508 | screamer: | |
93a17b20 | 6509 | if (cnt > 0) { |
c07a80fd | 6510 | if (rslen) { |
760ac839 LW |
6511 | while (cnt > 0) { /* this | eat */ |
6512 | cnt--; | |
c07a80fd | 6513 | if ((*bp++ = *ptr++) == rslast) /* really | dust */ |
6514 | goto thats_all_folks; /* screams | sed :-) */ | |
6515 | } | |
6516 | } | |
6517 | else { | |
1c846c1f NIS |
6518 | Copy(ptr, bp, cnt, char); /* this | eat */ |
6519 | bp += cnt; /* screams | dust */ | |
c07a80fd | 6520 | ptr += cnt; /* louder | sed :-) */ |
a5f75d66 | 6521 | cnt = 0; |
93a17b20 | 6522 | } |
79072805 LW |
6523 | } |
6524 | ||
748a9306 | 6525 | if (shortbuffered) { /* oh well, must extend */ |
79072805 LW |
6526 | cnt = shortbuffered; |
6527 | shortbuffered = 0; | |
3f7c398e | 6528 | bpx = bp - (STDCHAR*)SvPVX_const(sv); /* box up before relocation */ |
79072805 LW |
6529 | SvCUR_set(sv, bpx); |
6530 | SvGROW(sv, SvLEN(sv) + append + cnt + 2); | |
3f7c398e | 6531 | bp = (STDCHAR*)SvPVX_const(sv) + bpx; /* unbox after relocation */ |
79072805 LW |
6532 | continue; |
6533 | } | |
6534 | ||
16660edb | 6535 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 GS |
6536 | "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n", |
6537 | PTR2UV(ptr),(long)cnt)); | |
cc00df79 | 6538 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* deregisterize cnt and ptr */ |
ba7abf9d | 6539 | #if 0 |
16660edb | 6540 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6541 | "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6542 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6543 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 6544 | #endif |
1c846c1f | 6545 | /* This used to call 'filbuf' in stdio form, but as that behaves like |
774d564b | 6546 | getc when cnt <= 0 we use PerlIO_getc here to avoid introducing |
6547 | another abstraction. */ | |
760ac839 | 6548 | i = PerlIO_getc(fp); /* get more characters */ |
ba7abf9d | 6549 | #if 0 |
16660edb | 6550 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6551 | "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6552 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6553 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 6554 | #endif |
a20bf0c3 JH |
6555 | cnt = PerlIO_get_cnt(fp); |
6556 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */ | |
16660edb | 6557 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6558 | "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
79072805 | 6559 | |
748a9306 LW |
6560 | if (i == EOF) /* all done for ever? */ |
6561 | goto thats_really_all_folks; | |
6562 | ||
3f7c398e | 6563 | bpx = bp - (STDCHAR*)SvPVX_const(sv); /* box up before relocation */ |
79072805 LW |
6564 | SvCUR_set(sv, bpx); |
6565 | SvGROW(sv, bpx + cnt + 2); | |
3f7c398e | 6566 | bp = (STDCHAR*)SvPVX_const(sv) + bpx; /* unbox after relocation */ |
c07a80fd | 6567 | |
eb160463 | 6568 | *bp++ = (STDCHAR)i; /* store character from PerlIO_getc */ |
79072805 | 6569 | |
c07a80fd | 6570 | if (rslen && (STDCHAR)i == rslast) /* all done for now? */ |
79072805 | 6571 | goto thats_all_folks; |
79072805 LW |
6572 | } |
6573 | ||
6574 | thats_all_folks: | |
3f7c398e | 6575 | if ((rslen > 1 && (STRLEN)(bp - (STDCHAR*)SvPVX_const(sv)) < rslen) || |
36477c24 | 6576 | memNE((char*)bp - rslen, rsptr, rslen)) |
760ac839 | 6577 | goto screamer; /* go back to the fray */ |
79072805 LW |
6578 | thats_really_all_folks: |
6579 | if (shortbuffered) | |
6580 | cnt += shortbuffered; | |
16660edb | 6581 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6582 | "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
cc00df79 | 6583 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* put these back or we're in trouble */ |
16660edb | 6584 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6585 | "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6586 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6587 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
79072805 | 6588 | *bp = '\0'; |
3f7c398e | 6589 | SvCUR_set(sv, bp - (STDCHAR*)SvPVX_const(sv)); /* set length */ |
16660edb | 6590 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
fb73857a | 6591 | "Screamer: done, len=%ld, string=|%.*s|\n", |
3f7c398e | 6592 | (long)SvCUR(sv),(int)SvCUR(sv),SvPVX_const(sv))); |
760ac839 LW |
6593 | } |
6594 | else | |
79072805 | 6595 | { |
6edd2cd5 | 6596 | /*The big, slow, and stupid way. */ |
27da23d5 | 6597 | #ifdef USE_HEAP_INSTEAD_OF_STACK /* Even slower way. */ |
6edd2cd5 | 6598 | STDCHAR *buf = 0; |
a02a5408 | 6599 | Newx(buf, 8192, STDCHAR); |
6edd2cd5 | 6600 | assert(buf); |
4d2c4e07 | 6601 | #else |
6edd2cd5 | 6602 | STDCHAR buf[8192]; |
4d2c4e07 | 6603 | #endif |
79072805 | 6604 | |
760ac839 | 6605 | screamer2: |
c07a80fd | 6606 | if (rslen) { |
0d46e09a | 6607 | register const STDCHAR *bpe = buf + sizeof(buf); |
760ac839 | 6608 | bp = buf; |
eb160463 | 6609 | while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = (STDCHAR)i) != rslast && bp < bpe) |
760ac839 LW |
6610 | ; /* keep reading */ |
6611 | cnt = bp - buf; | |
c07a80fd | 6612 | } |
6613 | else { | |
760ac839 | 6614 | cnt = PerlIO_read(fp,(char*)buf, sizeof(buf)); |
16660edb | 6615 | /* Accomodate broken VAXC compiler, which applies U8 cast to |
6616 | * both args of ?: operator, causing EOF to change into 255 | |
6617 | */ | |
37be0adf | 6618 | if (cnt > 0) |
cbe9e203 JH |
6619 | i = (U8)buf[cnt - 1]; |
6620 | else | |
37be0adf | 6621 | i = EOF; |
c07a80fd | 6622 | } |
79072805 | 6623 | |
cbe9e203 JH |
6624 | if (cnt < 0) |
6625 | cnt = 0; /* we do need to re-set the sv even when cnt <= 0 */ | |
6626 | if (append) | |
6627 | sv_catpvn(sv, (char *) buf, cnt); | |
6628 | else | |
6629 | sv_setpvn(sv, (char *) buf, cnt); | |
c07a80fd | 6630 | |
6631 | if (i != EOF && /* joy */ | |
6632 | (!rslen || | |
6633 | SvCUR(sv) < rslen || | |
3f7c398e | 6634 | memNE(SvPVX_const(sv) + SvCUR(sv) - rslen, rsptr, rslen))) |
79072805 LW |
6635 | { |
6636 | append = -1; | |
63e4d877 CS |
6637 | /* |
6638 | * If we're reading from a TTY and we get a short read, | |
6639 | * indicating that the user hit his EOF character, we need | |
6640 | * to notice it now, because if we try to read from the TTY | |
6641 | * again, the EOF condition will disappear. | |
6642 | * | |
6643 | * The comparison of cnt to sizeof(buf) is an optimization | |
6644 | * that prevents unnecessary calls to feof(). | |
6645 | * | |
6646 | * - jik 9/25/96 | |
6647 | */ | |
6648 | if (!(cnt < sizeof(buf) && PerlIO_eof(fp))) | |
6649 | goto screamer2; | |
79072805 | 6650 | } |
6edd2cd5 | 6651 | |
27da23d5 | 6652 | #ifdef USE_HEAP_INSTEAD_OF_STACK |
6edd2cd5 JH |
6653 | Safefree(buf); |
6654 | #endif | |
79072805 LW |
6655 | } |
6656 | ||
8bfdd7d9 | 6657 | if (rspara) { /* have to do this both before and after */ |
c07a80fd | 6658 | while (i != EOF) { /* to make sure file boundaries work right */ |
760ac839 | 6659 | i = PerlIO_getc(fp); |
79072805 | 6660 | if (i != '\n') { |
760ac839 | 6661 | PerlIO_ungetc(fp,i); |
79072805 LW |
6662 | break; |
6663 | } | |
6664 | } | |
6665 | } | |
c07a80fd | 6666 | |
efd8b2ba | 6667 | return_string_or_null: |
c07a80fd | 6668 | return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch; |
79072805 LW |
6669 | } |
6670 | ||
954c1994 GS |
6671 | /* |
6672 | =for apidoc sv_inc | |
6673 | ||
645c22ef DM |
6674 | Auto-increment of the value in the SV, doing string to numeric conversion |
6675 | if necessary. Handles 'get' magic. | |
954c1994 GS |
6676 | |
6677 | =cut | |
6678 | */ | |
6679 | ||
79072805 | 6680 | void |
864dbfa3 | 6681 | Perl_sv_inc(pTHX_ register SV *sv) |
79072805 LW |
6682 | { |
6683 | register char *d; | |
463ee0b2 | 6684 | int flags; |
79072805 LW |
6685 | |
6686 | if (!sv) | |
6687 | return; | |
5b295bef | 6688 | SvGETMAGIC(sv); |
ed6116ce | 6689 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
6690 | if (SvIsCOW(sv)) |
6691 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 6692 | if (SvREADONLY(sv)) { |
923e4eb5 | 6693 | if (IN_PERL_RUNTIME) |
cea2e8a9 | 6694 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 6695 | } |
a0d0e21e | 6696 | if (SvROK(sv)) { |
b5be31e9 | 6697 | IV i; |
9e7bc3e8 JD |
6698 | if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) |
6699 | return; | |
56431972 | 6700 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
6701 | sv_unref(sv); |
6702 | sv_setiv(sv, i); | |
a0d0e21e | 6703 | } |
ed6116ce | 6704 | } |
8990e307 | 6705 | flags = SvFLAGS(sv); |
28e5dec8 JH |
6706 | if ((flags & (SVp_NOK|SVp_IOK)) == SVp_NOK) { |
6707 | /* It's (privately or publicly) a float, but not tested as an | |
6708 | integer, so test it to see. */ | |
d460ef45 | 6709 | (void) SvIV(sv); |
28e5dec8 JH |
6710 | flags = SvFLAGS(sv); |
6711 | } | |
6712 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { | |
6713 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 6714 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 6715 | oops_its_int: |
59d8ce62 | 6716 | #endif |
25da4f38 IZ |
6717 | if (SvIsUV(sv)) { |
6718 | if (SvUVX(sv) == UV_MAX) | |
a1e868e7 | 6719 | sv_setnv(sv, UV_MAX_P1); |
25da4f38 IZ |
6720 | else |
6721 | (void)SvIOK_only_UV(sv); | |
607fa7f2 | 6722 | SvUV_set(sv, SvUVX(sv) + 1); |
25da4f38 IZ |
6723 | } else { |
6724 | if (SvIVX(sv) == IV_MAX) | |
28e5dec8 | 6725 | sv_setuv(sv, (UV)IV_MAX + 1); |
25da4f38 IZ |
6726 | else { |
6727 | (void)SvIOK_only(sv); | |
45977657 | 6728 | SvIV_set(sv, SvIVX(sv) + 1); |
1c846c1f | 6729 | } |
55497cff | 6730 | } |
79072805 LW |
6731 | return; |
6732 | } | |
28e5dec8 JH |
6733 | if (flags & SVp_NOK) { |
6734 | (void)SvNOK_only(sv); | |
9d6ce603 | 6735 | SvNV_set(sv, SvNVX(sv) + 1.0); |
28e5dec8 JH |
6736 | return; |
6737 | } | |
6738 | ||
3f7c398e | 6739 | if (!(flags & SVp_POK) || !*SvPVX_const(sv)) { |
28e5dec8 | 6740 | if ((flags & SVTYPEMASK) < SVt_PVIV) |
f5282e15 | 6741 | sv_upgrade(sv, ((flags & SVTYPEMASK) > SVt_IV ? SVt_PVIV : SVt_IV)); |
28e5dec8 | 6742 | (void)SvIOK_only(sv); |
45977657 | 6743 | SvIV_set(sv, 1); |
79072805 LW |
6744 | return; |
6745 | } | |
463ee0b2 | 6746 | d = SvPVX(sv); |
79072805 LW |
6747 | while (isALPHA(*d)) d++; |
6748 | while (isDIGIT(*d)) d++; | |
6749 | if (*d) { | |
28e5dec8 | 6750 | #ifdef PERL_PRESERVE_IVUV |
d1be9408 | 6751 | /* Got to punt this as an integer if needs be, but we don't issue |
28e5dec8 JH |
6752 | warnings. Probably ought to make the sv_iv_please() that does |
6753 | the conversion if possible, and silently. */ | |
504618e9 | 6754 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
6755 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
6756 | /* Need to try really hard to see if it's an integer. | |
6757 | 9.22337203685478e+18 is an integer. | |
6758 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
6759 | so $a="9.22337203685478e+18"; $a+0; $a++ | |
6760 | needs to be the same as $a="9.22337203685478e+18"; $a++ | |
6761 | or we go insane. */ | |
d460ef45 | 6762 | |
28e5dec8 JH |
6763 | (void) sv_2iv(sv); |
6764 | if (SvIOK(sv)) | |
6765 | goto oops_its_int; | |
6766 | ||
6767 | /* sv_2iv *should* have made this an NV */ | |
6768 | if (flags & SVp_NOK) { | |
6769 | (void)SvNOK_only(sv); | |
9d6ce603 | 6770 | SvNV_set(sv, SvNVX(sv) + 1.0); |
28e5dec8 JH |
6771 | return; |
6772 | } | |
6773 | /* I don't think we can get here. Maybe I should assert this | |
6774 | And if we do get here I suspect that sv_setnv will croak. NWC | |
6775 | Fall through. */ | |
6776 | #if defined(USE_LONG_DOUBLE) | |
6777 | 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", | |
3f7c398e | 6778 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 | 6779 | #else |
1779d84d | 6780 | DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_inc punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%"NVgf"\n", |
3f7c398e | 6781 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 JH |
6782 | #endif |
6783 | } | |
6784 | #endif /* PERL_PRESERVE_IVUV */ | |
3f7c398e | 6785 | sv_setnv(sv,Atof(SvPVX_const(sv)) + 1.0); |
79072805 LW |
6786 | return; |
6787 | } | |
6788 | d--; | |
3f7c398e | 6789 | while (d >= SvPVX_const(sv)) { |
79072805 LW |
6790 | if (isDIGIT(*d)) { |
6791 | if (++*d <= '9') | |
6792 | return; | |
6793 | *(d--) = '0'; | |
6794 | } | |
6795 | else { | |
9d116dd7 JH |
6796 | #ifdef EBCDIC |
6797 | /* MKS: The original code here died if letters weren't consecutive. | |
6798 | * at least it didn't have to worry about non-C locales. The | |
6799 | * new code assumes that ('z'-'a')==('Z'-'A'), letters are | |
1c846c1f | 6800 | * arranged in order (although not consecutively) and that only |
9d116dd7 JH |
6801 | * [A-Za-z] are accepted by isALPHA in the C locale. |
6802 | */ | |
6803 | if (*d != 'z' && *d != 'Z') { | |
6804 | do { ++*d; } while (!isALPHA(*d)); | |
6805 | return; | |
6806 | } | |
6807 | *(d--) -= 'z' - 'a'; | |
6808 | #else | |
79072805 LW |
6809 | ++*d; |
6810 | if (isALPHA(*d)) | |
6811 | return; | |
6812 | *(d--) -= 'z' - 'a' + 1; | |
9d116dd7 | 6813 | #endif |
79072805 LW |
6814 | } |
6815 | } | |
6816 | /* oh,oh, the number grew */ | |
6817 | SvGROW(sv, SvCUR(sv) + 2); | |
b162af07 | 6818 | SvCUR_set(sv, SvCUR(sv) + 1); |
3f7c398e | 6819 | for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX_const(sv); d--) |
79072805 LW |
6820 | *d = d[-1]; |
6821 | if (isDIGIT(d[1])) | |
6822 | *d = '1'; | |
6823 | else | |
6824 | *d = d[1]; | |
6825 | } | |
6826 | ||
954c1994 GS |
6827 | /* |
6828 | =for apidoc sv_dec | |
6829 | ||
645c22ef DM |
6830 | Auto-decrement of the value in the SV, doing string to numeric conversion |
6831 | if necessary. Handles 'get' magic. | |
954c1994 GS |
6832 | |
6833 | =cut | |
6834 | */ | |
6835 | ||
79072805 | 6836 | void |
864dbfa3 | 6837 | Perl_sv_dec(pTHX_ register SV *sv) |
79072805 | 6838 | { |
463ee0b2 LW |
6839 | int flags; |
6840 | ||
79072805 LW |
6841 | if (!sv) |
6842 | return; | |
5b295bef | 6843 | SvGETMAGIC(sv); |
ed6116ce | 6844 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
6845 | if (SvIsCOW(sv)) |
6846 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 6847 | if (SvREADONLY(sv)) { |
923e4eb5 | 6848 | if (IN_PERL_RUNTIME) |
cea2e8a9 | 6849 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 6850 | } |
a0d0e21e | 6851 | if (SvROK(sv)) { |
b5be31e9 | 6852 | IV i; |
9e7bc3e8 JD |
6853 | if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) |
6854 | return; | |
56431972 | 6855 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
6856 | sv_unref(sv); |
6857 | sv_setiv(sv, i); | |
a0d0e21e | 6858 | } |
ed6116ce | 6859 | } |
28e5dec8 JH |
6860 | /* Unlike sv_inc we don't have to worry about string-never-numbers |
6861 | and keeping them magic. But we mustn't warn on punting */ | |
8990e307 | 6862 | flags = SvFLAGS(sv); |
28e5dec8 JH |
6863 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { |
6864 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 6865 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 6866 | oops_its_int: |
59d8ce62 | 6867 | #endif |
25da4f38 IZ |
6868 | if (SvIsUV(sv)) { |
6869 | if (SvUVX(sv) == 0) { | |
6870 | (void)SvIOK_only(sv); | |
45977657 | 6871 | SvIV_set(sv, -1); |
25da4f38 IZ |
6872 | } |
6873 | else { | |
6874 | (void)SvIOK_only_UV(sv); | |
f4eee32f | 6875 | SvUV_set(sv, SvUVX(sv) - 1); |
1c846c1f | 6876 | } |
25da4f38 IZ |
6877 | } else { |
6878 | if (SvIVX(sv) == IV_MIN) | |
65202027 | 6879 | sv_setnv(sv, (NV)IV_MIN - 1.0); |
25da4f38 IZ |
6880 | else { |
6881 | (void)SvIOK_only(sv); | |
45977657 | 6882 | SvIV_set(sv, SvIVX(sv) - 1); |
1c846c1f | 6883 | } |
55497cff | 6884 | } |
6885 | return; | |
6886 | } | |
28e5dec8 | 6887 | if (flags & SVp_NOK) { |
9d6ce603 | 6888 | SvNV_set(sv, SvNVX(sv) - 1.0); |
28e5dec8 JH |
6889 | (void)SvNOK_only(sv); |
6890 | return; | |
6891 | } | |
8990e307 | 6892 | if (!(flags & SVp_POK)) { |
ef088171 NC |
6893 | if ((flags & SVTYPEMASK) < SVt_PVIV) |
6894 | sv_upgrade(sv, ((flags & SVTYPEMASK) > SVt_IV) ? SVt_PVIV : SVt_IV); | |
6895 | SvIV_set(sv, -1); | |
6896 | (void)SvIOK_only(sv); | |
79072805 LW |
6897 | return; |
6898 | } | |
28e5dec8 JH |
6899 | #ifdef PERL_PRESERVE_IVUV |
6900 | { | |
504618e9 | 6901 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
6902 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
6903 | /* Need to try really hard to see if it's an integer. | |
6904 | 9.22337203685478e+18 is an integer. | |
6905 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
6906 | so $a="9.22337203685478e+18"; $a+0; $a-- | |
6907 | needs to be the same as $a="9.22337203685478e+18"; $a-- | |
6908 | or we go insane. */ | |
d460ef45 | 6909 | |
28e5dec8 JH |
6910 | (void) sv_2iv(sv); |
6911 | if (SvIOK(sv)) | |
6912 | goto oops_its_int; | |
6913 | ||
6914 | /* sv_2iv *should* have made this an NV */ | |
6915 | if (flags & SVp_NOK) { | |
6916 | (void)SvNOK_only(sv); | |
9d6ce603 | 6917 | SvNV_set(sv, SvNVX(sv) - 1.0); |
28e5dec8 JH |
6918 | return; |
6919 | } | |
6920 | /* I don't think we can get here. Maybe I should assert this | |
6921 | And if we do get here I suspect that sv_setnv will croak. NWC | |
6922 | Fall through. */ | |
6923 | #if defined(USE_LONG_DOUBLE) | |
6924 | 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", | |
3f7c398e | 6925 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 | 6926 | #else |
1779d84d | 6927 | DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_dec punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%"NVgf"\n", |
3f7c398e | 6928 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 JH |
6929 | #endif |
6930 | } | |
6931 | } | |
6932 | #endif /* PERL_PRESERVE_IVUV */ | |
3f7c398e | 6933 | sv_setnv(sv,Atof(SvPVX_const(sv)) - 1.0); /* punt */ |
79072805 LW |
6934 | } |
6935 | ||
954c1994 GS |
6936 | /* |
6937 | =for apidoc sv_mortalcopy | |
6938 | ||
645c22ef | 6939 | Creates a new SV which is a copy of the original SV (using C<sv_setsv>). |
d4236ebc DM |
6940 | The new SV is marked as mortal. It will be destroyed "soon", either by an |
6941 | explicit call to FREETMPS, or by an implicit call at places such as | |
6942 | statement boundaries. See also C<sv_newmortal> and C<sv_2mortal>. | |
954c1994 GS |
6943 | |
6944 | =cut | |
6945 | */ | |
6946 | ||
79072805 LW |
6947 | /* Make a string that will exist for the duration of the expression |
6948 | * evaluation. Actually, it may have to last longer than that, but | |
6949 | * hopefully we won't free it until it has been assigned to a | |
6950 | * permanent location. */ | |
6951 | ||
6952 | SV * | |
864dbfa3 | 6953 | Perl_sv_mortalcopy(pTHX_ SV *oldstr) |
79072805 | 6954 | { |
463ee0b2 | 6955 | register SV *sv; |
b881518d | 6956 | |
4561caa4 | 6957 | new_SV(sv); |
79072805 | 6958 | sv_setsv(sv,oldstr); |
677b06e3 GS |
6959 | EXTEND_MORTAL(1); |
6960 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 LW |
6961 | SvTEMP_on(sv); |
6962 | return sv; | |
6963 | } | |
6964 | ||
954c1994 GS |
6965 | /* |
6966 | =for apidoc sv_newmortal | |
6967 | ||
645c22ef | 6968 | Creates a new null SV which is mortal. The reference count of the SV is |
d4236ebc DM |
6969 | set to 1. It will be destroyed "soon", either by an explicit call to |
6970 | FREETMPS, or by an implicit call at places such as statement boundaries. | |
6971 | See also C<sv_mortalcopy> and C<sv_2mortal>. | |
954c1994 GS |
6972 | |
6973 | =cut | |
6974 | */ | |
6975 | ||
8990e307 | 6976 | SV * |
864dbfa3 | 6977 | Perl_sv_newmortal(pTHX) |
8990e307 LW |
6978 | { |
6979 | register SV *sv; | |
6980 | ||
4561caa4 | 6981 | new_SV(sv); |
8990e307 | 6982 | SvFLAGS(sv) = SVs_TEMP; |
677b06e3 GS |
6983 | EXTEND_MORTAL(1); |
6984 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
79072805 LW |
6985 | return sv; |
6986 | } | |
6987 | ||
954c1994 GS |
6988 | /* |
6989 | =for apidoc sv_2mortal | |
6990 | ||
d4236ebc DM |
6991 | Marks an existing SV as mortal. The SV will be destroyed "soon", either |
6992 | by an explicit call to FREETMPS, or by an implicit call at places such as | |
37d2ac18 NC |
6993 | statement boundaries. SvTEMP() is turned on which means that the SV's |
6994 | string buffer can be "stolen" if this SV is copied. See also C<sv_newmortal> | |
6995 | and C<sv_mortalcopy>. | |
954c1994 GS |
6996 | |
6997 | =cut | |
6998 | */ | |
6999 | ||
79072805 | 7000 | SV * |
864dbfa3 | 7001 | Perl_sv_2mortal(pTHX_ register SV *sv) |
79072805 | 7002 | { |
27da23d5 | 7003 | dVAR; |
79072805 LW |
7004 | if (!sv) |
7005 | return sv; | |
d689ffdd | 7006 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) |
11162842 | 7007 | return sv; |
677b06e3 GS |
7008 | EXTEND_MORTAL(1); |
7009 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 | 7010 | SvTEMP_on(sv); |
79072805 LW |
7011 | return sv; |
7012 | } | |
7013 | ||
954c1994 GS |
7014 | /* |
7015 | =for apidoc newSVpv | |
7016 | ||
7017 | Creates a new SV and copies a string into it. The reference count for the | |
7018 | SV is set to 1. If C<len> is zero, Perl will compute the length using | |
7019 | strlen(). For efficiency, consider using C<newSVpvn> instead. | |
7020 | ||
7021 | =cut | |
7022 | */ | |
7023 | ||
79072805 | 7024 | SV * |
864dbfa3 | 7025 | Perl_newSVpv(pTHX_ const char *s, STRLEN len) |
79072805 | 7026 | { |
463ee0b2 | 7027 | register SV *sv; |
79072805 | 7028 | |
4561caa4 | 7029 | new_SV(sv); |
616d8c9c | 7030 | sv_setpvn(sv,s,len ? len : strlen(s)); |
79072805 LW |
7031 | return sv; |
7032 | } | |
7033 | ||
954c1994 GS |
7034 | /* |
7035 | =for apidoc newSVpvn | |
7036 | ||
7037 | Creates a new SV and copies a string into it. The reference count for the | |
1c846c1f | 7038 | SV is set to 1. Note that if C<len> is zero, Perl will create a zero length |
954c1994 | 7039 | string. You are responsible for ensuring that the source string is at least |
9e09f5f2 | 7040 | C<len> bytes long. If the C<s> argument is NULL the new SV will be undefined. |
954c1994 GS |
7041 | |
7042 | =cut | |
7043 | */ | |
7044 | ||
9da1e3b5 | 7045 | SV * |
864dbfa3 | 7046 | Perl_newSVpvn(pTHX_ const char *s, STRLEN len) |
9da1e3b5 MUN |
7047 | { |
7048 | register SV *sv; | |
7049 | ||
7050 | new_SV(sv); | |
9da1e3b5 MUN |
7051 | sv_setpvn(sv,s,len); |
7052 | return sv; | |
7053 | } | |
7054 | ||
bd08039b NC |
7055 | |
7056 | /* | |
926f8064 | 7057 | =for apidoc newSVhek |
bd08039b NC |
7058 | |
7059 | Creates a new SV from the hash key structure. It will generate scalars that | |
5aaec2b4 NC |
7060 | point to the shared string table where possible. Returns a new (undefined) |
7061 | SV if the hek is NULL. | |
bd08039b NC |
7062 | |
7063 | =cut | |
7064 | */ | |
7065 | ||
7066 | SV * | |
c1b02ed8 | 7067 | Perl_newSVhek(pTHX_ const HEK *hek) |
bd08039b | 7068 | { |
5aaec2b4 NC |
7069 | if (!hek) { |
7070 | SV *sv; | |
7071 | ||
7072 | new_SV(sv); | |
7073 | return sv; | |
7074 | } | |
7075 | ||
bd08039b NC |
7076 | if (HEK_LEN(hek) == HEf_SVKEY) { |
7077 | return newSVsv(*(SV**)HEK_KEY(hek)); | |
7078 | } else { | |
7079 | const int flags = HEK_FLAGS(hek); | |
7080 | if (flags & HVhek_WASUTF8) { | |
7081 | /* Trouble :-) | |
7082 | Andreas would like keys he put in as utf8 to come back as utf8 | |
7083 | */ | |
7084 | STRLEN utf8_len = HEK_LEN(hek); | |
b64e5050 AL |
7085 | const U8 *as_utf8 = bytes_to_utf8 ((U8*)HEK_KEY(hek), &utf8_len); |
7086 | SV * const sv = newSVpvn ((const char*)as_utf8, utf8_len); | |
bd08039b NC |
7087 | |
7088 | SvUTF8_on (sv); | |
7089 | Safefree (as_utf8); /* bytes_to_utf8() allocates a new string */ | |
7090 | return sv; | |
7091 | } else if (flags & HVhek_REHASH) { | |
7092 | /* We don't have a pointer to the hv, so we have to replicate the | |
7093 | flag into every HEK. This hv is using custom a hasing | |
7094 | algorithm. Hence we can't return a shared string scalar, as | |
7095 | that would contain the (wrong) hash value, and might get passed | |
7096 | into an hv routine with a regular hash */ | |
7097 | ||
b64e5050 | 7098 | SV * const sv = newSVpvn (HEK_KEY(hek), HEK_LEN(hek)); |
bd08039b NC |
7099 | if (HEK_UTF8(hek)) |
7100 | SvUTF8_on (sv); | |
7101 | return sv; | |
7102 | } | |
7103 | /* This will be overwhelminly the most common case. */ | |
7104 | return newSVpvn_share(HEK_KEY(hek), | |
7105 | (HEK_UTF8(hek) ? -HEK_LEN(hek) : HEK_LEN(hek)), | |
7106 | HEK_HASH(hek)); | |
7107 | } | |
7108 | } | |
7109 | ||
1c846c1f NIS |
7110 | /* |
7111 | =for apidoc newSVpvn_share | |
7112 | ||
3f7c398e | 7113 | Creates a new SV with its SvPVX_const pointing to a shared string in the string |
645c22ef DM |
7114 | table. If the string does not already exist in the table, it is created |
7115 | first. Turns on READONLY and FAKE. The string's hash is stored in the UV | |
7116 | slot of the SV; if the C<hash> parameter is non-zero, that value is used; | |
7117 | otherwise the hash is computed. The idea here is that as the string table | |
3f7c398e | 7118 | is used for shared hash keys these strings will have SvPVX_const == HeKEY and |
645c22ef | 7119 | hash lookup will avoid string compare. |
1c846c1f NIS |
7120 | |
7121 | =cut | |
7122 | */ | |
7123 | ||
7124 | SV * | |
c3654f1a | 7125 | Perl_newSVpvn_share(pTHX_ const char *src, I32 len, U32 hash) |
1c846c1f NIS |
7126 | { |
7127 | register SV *sv; | |
c3654f1a IH |
7128 | bool is_utf8 = FALSE; |
7129 | if (len < 0) { | |
77caf834 | 7130 | STRLEN tmplen = -len; |
c3654f1a | 7131 | is_utf8 = TRUE; |
75a54232 | 7132 | /* See the note in hv.c:hv_fetch() --jhi */ |
e1ec3a88 | 7133 | src = (char*)bytes_from_utf8((const U8*)src, &tmplen, &is_utf8); |
75a54232 JH |
7134 | len = tmplen; |
7135 | } | |
1c846c1f | 7136 | if (!hash) |
5afd6d42 | 7137 | PERL_HASH(hash, src, len); |
1c846c1f | 7138 | new_SV(sv); |
bdd68bc3 | 7139 | sv_upgrade(sv, SVt_PV); |
f880fe2f | 7140 | SvPV_set(sv, sharepvn(src, is_utf8?-len:len, hash)); |
b162af07 | 7141 | SvCUR_set(sv, len); |
b162af07 | 7142 | SvLEN_set(sv, 0); |
1c846c1f NIS |
7143 | SvREADONLY_on(sv); |
7144 | SvFAKE_on(sv); | |
7145 | SvPOK_on(sv); | |
c3654f1a IH |
7146 | if (is_utf8) |
7147 | SvUTF8_on(sv); | |
1c846c1f NIS |
7148 | return sv; |
7149 | } | |
7150 | ||
645c22ef | 7151 | |
cea2e8a9 | 7152 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
7153 | |
7154 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
7155 | * version of the main function, (which may itself be aliased to us). | |
7156 | * Don't access this version directly. | |
7157 | */ | |
7158 | ||
46fc3d4c | 7159 | SV * |
cea2e8a9 | 7160 | Perl_newSVpvf_nocontext(const char* pat, ...) |
46fc3d4c | 7161 | { |
cea2e8a9 | 7162 | dTHX; |
46fc3d4c | 7163 | register SV *sv; |
7164 | va_list args; | |
46fc3d4c | 7165 | va_start(args, pat); |
c5be433b | 7166 | sv = vnewSVpvf(pat, &args); |
46fc3d4c | 7167 | va_end(args); |
7168 | return sv; | |
7169 | } | |
cea2e8a9 | 7170 | #endif |
46fc3d4c | 7171 | |
954c1994 GS |
7172 | /* |
7173 | =for apidoc newSVpvf | |
7174 | ||
645c22ef | 7175 | Creates a new SV and initializes it with the string formatted like |
954c1994 GS |
7176 | C<sprintf>. |
7177 | ||
7178 | =cut | |
7179 | */ | |
7180 | ||
cea2e8a9 GS |
7181 | SV * |
7182 | Perl_newSVpvf(pTHX_ const char* pat, ...) | |
7183 | { | |
7184 | register SV *sv; | |
7185 | va_list args; | |
cea2e8a9 | 7186 | va_start(args, pat); |
c5be433b | 7187 | sv = vnewSVpvf(pat, &args); |
cea2e8a9 GS |
7188 | va_end(args); |
7189 | return sv; | |
7190 | } | |
46fc3d4c | 7191 | |
645c22ef DM |
7192 | /* backend for newSVpvf() and newSVpvf_nocontext() */ |
7193 | ||
79072805 | 7194 | SV * |
c5be433b GS |
7195 | Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args) |
7196 | { | |
7197 | register SV *sv; | |
7198 | new_SV(sv); | |
7199 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
7200 | return sv; | |
7201 | } | |
7202 | ||
954c1994 GS |
7203 | /* |
7204 | =for apidoc newSVnv | |
7205 | ||
7206 | Creates a new SV and copies a floating point value into it. | |
7207 | The reference count for the SV is set to 1. | |
7208 | ||
7209 | =cut | |
7210 | */ | |
7211 | ||
c5be433b | 7212 | SV * |
65202027 | 7213 | Perl_newSVnv(pTHX_ NV n) |
79072805 | 7214 | { |
463ee0b2 | 7215 | register SV *sv; |
79072805 | 7216 | |
4561caa4 | 7217 | new_SV(sv); |
79072805 LW |
7218 | sv_setnv(sv,n); |
7219 | return sv; | |
7220 | } | |
7221 | ||
954c1994 GS |
7222 | /* |
7223 | =for apidoc newSViv | |
7224 | ||
7225 | Creates a new SV and copies an integer into it. The reference count for the | |
7226 | SV is set to 1. | |
7227 | ||
7228 | =cut | |
7229 | */ | |
7230 | ||
79072805 | 7231 | SV * |
864dbfa3 | 7232 | Perl_newSViv(pTHX_ IV i) |
79072805 | 7233 | { |
463ee0b2 | 7234 | register SV *sv; |
79072805 | 7235 | |
4561caa4 | 7236 | new_SV(sv); |
79072805 LW |
7237 | sv_setiv(sv,i); |
7238 | return sv; | |
7239 | } | |
7240 | ||
954c1994 | 7241 | /* |
1a3327fb JH |
7242 | =for apidoc newSVuv |
7243 | ||
7244 | Creates a new SV and copies an unsigned integer into it. | |
7245 | The reference count for the SV is set to 1. | |
7246 | ||
7247 | =cut | |
7248 | */ | |
7249 | ||
7250 | SV * | |
7251 | Perl_newSVuv(pTHX_ UV u) | |
7252 | { | |
7253 | register SV *sv; | |
7254 | ||
7255 | new_SV(sv); | |
7256 | sv_setuv(sv,u); | |
7257 | return sv; | |
7258 | } | |
7259 | ||
7260 | /* | |
954c1994 GS |
7261 | =for apidoc newRV_noinc |
7262 | ||
7263 | Creates an RV wrapper for an SV. The reference count for the original | |
7264 | SV is B<not> incremented. | |
7265 | ||
7266 | =cut | |
7267 | */ | |
7268 | ||
2304df62 | 7269 | SV * |
864dbfa3 | 7270 | Perl_newRV_noinc(pTHX_ SV *tmpRef) |
2304df62 AD |
7271 | { |
7272 | register SV *sv; | |
7273 | ||
4561caa4 | 7274 | new_SV(sv); |
2304df62 | 7275 | sv_upgrade(sv, SVt_RV); |
76e3520e | 7276 | SvTEMP_off(tmpRef); |
b162af07 | 7277 | SvRV_set(sv, tmpRef); |
2304df62 | 7278 | SvROK_on(sv); |
2304df62 AD |
7279 | return sv; |
7280 | } | |
7281 | ||
ff276b08 | 7282 | /* newRV_inc is the official function name to use now. |
645c22ef DM |
7283 | * newRV_inc is in fact #defined to newRV in sv.h |
7284 | */ | |
7285 | ||
5f05dabc | 7286 | SV * |
864dbfa3 | 7287 | Perl_newRV(pTHX_ SV *tmpRef) |
5f05dabc | 7288 | { |
5f6447b6 | 7289 | return newRV_noinc(SvREFCNT_inc(tmpRef)); |
5f05dabc | 7290 | } |
5f05dabc | 7291 | |
954c1994 GS |
7292 | /* |
7293 | =for apidoc newSVsv | |
7294 | ||
7295 | Creates a new SV which is an exact duplicate of the original SV. | |
645c22ef | 7296 | (Uses C<sv_setsv>). |
954c1994 GS |
7297 | |
7298 | =cut | |
7299 | */ | |
7300 | ||
79072805 | 7301 | SV * |
864dbfa3 | 7302 | Perl_newSVsv(pTHX_ register SV *old) |
79072805 | 7303 | { |
463ee0b2 | 7304 | register SV *sv; |
79072805 LW |
7305 | |
7306 | if (!old) | |
7307 | return Nullsv; | |
8990e307 | 7308 | if (SvTYPE(old) == SVTYPEMASK) { |
0453d815 | 7309 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 7310 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "semi-panic: attempt to dup freed string"); |
79072805 LW |
7311 | return Nullsv; |
7312 | } | |
4561caa4 | 7313 | new_SV(sv); |
e90aabeb NC |
7314 | /* SV_GMAGIC is the default for sv_setv() |
7315 | SV_NOSTEAL prevents TEMP buffers being, well, stolen, and saves games | |
7316 | with SvTEMP_off and SvTEMP_on round a call to sv_setsv. */ | |
7317 | sv_setsv_flags(sv, old, SV_GMAGIC | SV_NOSTEAL); | |
463ee0b2 | 7318 | return sv; |
79072805 LW |
7319 | } |
7320 | ||
645c22ef DM |
7321 | /* |
7322 | =for apidoc sv_reset | |
7323 | ||
7324 | Underlying implementation for the C<reset> Perl function. | |
7325 | Note that the perl-level function is vaguely deprecated. | |
7326 | ||
7327 | =cut | |
7328 | */ | |
7329 | ||
79072805 | 7330 | void |
e1ec3a88 | 7331 | Perl_sv_reset(pTHX_ register const char *s, HV *stash) |
79072805 | 7332 | { |
27da23d5 | 7333 | dVAR; |
4802d5d7 | 7334 | char todo[PERL_UCHAR_MAX+1]; |
79072805 | 7335 | |
49d8d3a1 MB |
7336 | if (!stash) |
7337 | return; | |
7338 | ||
79072805 | 7339 | if (!*s) { /* reset ?? searches */ |
aec46f14 | 7340 | MAGIC * const mg = mg_find((SV *)stash, PERL_MAGIC_symtab); |
8d2f4536 NC |
7341 | if (mg) { |
7342 | PMOP *pm = (PMOP *) mg->mg_obj; | |
7343 | while (pm) { | |
7344 | pm->op_pmdynflags &= ~PMdf_USED; | |
7345 | pm = pm->op_pmnext; | |
7346 | } | |
79072805 LW |
7347 | } |
7348 | return; | |
7349 | } | |
7350 | ||
7351 | /* reset variables */ | |
7352 | ||
7353 | if (!HvARRAY(stash)) | |
7354 | return; | |
463ee0b2 LW |
7355 | |
7356 | Zero(todo, 256, char); | |
79072805 | 7357 | while (*s) { |
b464bac0 AL |
7358 | I32 max; |
7359 | I32 i = (unsigned char)*s; | |
79072805 LW |
7360 | if (s[1] == '-') { |
7361 | s += 2; | |
7362 | } | |
4802d5d7 | 7363 | max = (unsigned char)*s++; |
79072805 | 7364 | for ( ; i <= max; i++) { |
463ee0b2 LW |
7365 | todo[i] = 1; |
7366 | } | |
a0d0e21e | 7367 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
b464bac0 | 7368 | HE *entry; |
79072805 | 7369 | for (entry = HvARRAY(stash)[i]; |
9e35f4b3 GS |
7370 | entry; |
7371 | entry = HeNEXT(entry)) | |
7372 | { | |
b464bac0 AL |
7373 | register GV *gv; |
7374 | register SV *sv; | |
7375 | ||
1edc1566 | 7376 | if (!todo[(U8)*HeKEY(entry)]) |
463ee0b2 | 7377 | continue; |
1edc1566 | 7378 | gv = (GV*)HeVAL(entry); |
79072805 | 7379 | sv = GvSV(gv); |
e203899d NC |
7380 | if (sv) { |
7381 | if (SvTHINKFIRST(sv)) { | |
7382 | if (!SvREADONLY(sv) && SvROK(sv)) | |
7383 | sv_unref(sv); | |
7384 | /* XXX Is this continue a bug? Why should THINKFIRST | |
7385 | exempt us from resetting arrays and hashes? */ | |
7386 | continue; | |
7387 | } | |
7388 | SvOK_off(sv); | |
7389 | if (SvTYPE(sv) >= SVt_PV) { | |
7390 | SvCUR_set(sv, 0); | |
7391 | if (SvPVX_const(sv) != Nullch) | |
7392 | *SvPVX(sv) = '\0'; | |
7393 | SvTAINT(sv); | |
7394 | } | |
79072805 LW |
7395 | } |
7396 | if (GvAV(gv)) { | |
7397 | av_clear(GvAV(gv)); | |
7398 | } | |
bfcb3514 | 7399 | if (GvHV(gv) && !HvNAME_get(GvHV(gv))) { |
b0269e46 AB |
7400 | #if defined(VMS) |
7401 | Perl_die(aTHX_ "Can't reset %%ENV on this system"); | |
7402 | #else /* ! VMS */ | |
463ee0b2 | 7403 | hv_clear(GvHV(gv)); |
b0269e46 AB |
7404 | # if defined(USE_ENVIRON_ARRAY) |
7405 | if (gv == PL_envgv) | |
7406 | my_clearenv(); | |
7407 | # endif /* USE_ENVIRON_ARRAY */ | |
7408 | #endif /* VMS */ | |
79072805 LW |
7409 | } |
7410 | } | |
7411 | } | |
7412 | } | |
7413 | } | |
7414 | ||
645c22ef DM |
7415 | /* |
7416 | =for apidoc sv_2io | |
7417 | ||
7418 | Using various gambits, try to get an IO from an SV: the IO slot if its a | |
7419 | GV; or the recursive result if we're an RV; or the IO slot of the symbol | |
7420 | named after the PV if we're a string. | |
7421 | ||
7422 | =cut | |
7423 | */ | |
7424 | ||
46fc3d4c | 7425 | IO* |
864dbfa3 | 7426 | Perl_sv_2io(pTHX_ SV *sv) |
46fc3d4c | 7427 | { |
7428 | IO* io; | |
7429 | GV* gv; | |
7430 | ||
7431 | switch (SvTYPE(sv)) { | |
7432 | case SVt_PVIO: | |
7433 | io = (IO*)sv; | |
7434 | break; | |
7435 | case SVt_PVGV: | |
7436 | gv = (GV*)sv; | |
7437 | io = GvIO(gv); | |
7438 | if (!io) | |
cea2e8a9 | 7439 | Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv)); |
46fc3d4c | 7440 | break; |
7441 | default: | |
7442 | if (!SvOK(sv)) | |
cea2e8a9 | 7443 | Perl_croak(aTHX_ PL_no_usym, "filehandle"); |
46fc3d4c | 7444 | if (SvROK(sv)) |
7445 | return sv_2io(SvRV(sv)); | |
7a5fd60d | 7446 | gv = gv_fetchsv(sv, FALSE, SVt_PVIO); |
46fc3d4c | 7447 | if (gv) |
7448 | io = GvIO(gv); | |
7449 | else | |
7450 | io = 0; | |
7451 | if (!io) | |
35c1215d | 7452 | Perl_croak(aTHX_ "Bad filehandle: %"SVf, sv); |
46fc3d4c | 7453 | break; |
7454 | } | |
7455 | return io; | |
7456 | } | |
7457 | ||
645c22ef DM |
7458 | /* |
7459 | =for apidoc sv_2cv | |
7460 | ||
7461 | Using various gambits, try to get a CV from an SV; in addition, try if | |
7462 | possible to set C<*st> and C<*gvp> to the stash and GV associated with it. | |
7463 | ||
7464 | =cut | |
7465 | */ | |
7466 | ||
79072805 | 7467 | CV * |
864dbfa3 | 7468 | Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref) |
79072805 | 7469 | { |
27da23d5 | 7470 | dVAR; |
c04a4dfe JH |
7471 | GV *gv = Nullgv; |
7472 | CV *cv = Nullcv; | |
79072805 LW |
7473 | |
7474 | if (!sv) | |
93a17b20 | 7475 | return *gvp = Nullgv, Nullcv; |
79072805 | 7476 | switch (SvTYPE(sv)) { |
79072805 LW |
7477 | case SVt_PVCV: |
7478 | *st = CvSTASH(sv); | |
7479 | *gvp = Nullgv; | |
7480 | return (CV*)sv; | |
7481 | case SVt_PVHV: | |
7482 | case SVt_PVAV: | |
7483 | *gvp = Nullgv; | |
7484 | return Nullcv; | |
8990e307 LW |
7485 | case SVt_PVGV: |
7486 | gv = (GV*)sv; | |
a0d0e21e | 7487 | *gvp = gv; |
8990e307 LW |
7488 | *st = GvESTASH(gv); |
7489 | goto fix_gv; | |
7490 | ||
79072805 | 7491 | default: |
5b295bef | 7492 | SvGETMAGIC(sv); |
a0d0e21e | 7493 | if (SvROK(sv)) { |
823a54a3 | 7494 | SV * const *sp = &sv; /* Used in tryAMAGICunDEREF macro. */ |
f5284f61 IZ |
7495 | tryAMAGICunDEREF(to_cv); |
7496 | ||
62f274bf GS |
7497 | sv = SvRV(sv); |
7498 | if (SvTYPE(sv) == SVt_PVCV) { | |
7499 | cv = (CV*)sv; | |
7500 | *gvp = Nullgv; | |
7501 | *st = CvSTASH(cv); | |
7502 | return cv; | |
7503 | } | |
7504 | else if(isGV(sv)) | |
7505 | gv = (GV*)sv; | |
7506 | else | |
cea2e8a9 | 7507 | Perl_croak(aTHX_ "Not a subroutine reference"); |
a0d0e21e | 7508 | } |
62f274bf | 7509 | else if (isGV(sv)) |
79072805 LW |
7510 | gv = (GV*)sv; |
7511 | else | |
7a5fd60d | 7512 | gv = gv_fetchsv(sv, lref, SVt_PVCV); |
79072805 LW |
7513 | *gvp = gv; |
7514 | if (!gv) | |
7515 | return Nullcv; | |
7516 | *st = GvESTASH(gv); | |
8990e307 | 7517 | fix_gv: |
8ebc5c01 | 7518 | if (lref && !GvCVu(gv)) { |
4633a7c4 | 7519 | SV *tmpsv; |
748a9306 | 7520 | ENTER; |
4633a7c4 | 7521 | tmpsv = NEWSV(704,0); |
16660edb | 7522 | gv_efullname3(tmpsv, gv, Nullch); |
f6ec51f7 GS |
7523 | /* XXX this is probably not what they think they're getting. |
7524 | * It has the same effect as "sub name;", i.e. just a forward | |
7525 | * declaration! */ | |
774d564b | 7526 | newSUB(start_subparse(FALSE, 0), |
4633a7c4 LW |
7527 | newSVOP(OP_CONST, 0, tmpsv), |
7528 | Nullop, | |
8990e307 | 7529 | Nullop); |
748a9306 | 7530 | LEAVE; |
8ebc5c01 | 7531 | if (!GvCVu(gv)) |
35c1215d NC |
7532 | Perl_croak(aTHX_ "Unable to create sub named \"%"SVf"\"", |
7533 | sv); | |
8990e307 | 7534 | } |
8ebc5c01 | 7535 | return GvCVu(gv); |
79072805 LW |
7536 | } |
7537 | } | |
7538 | ||
c461cf8f JH |
7539 | /* |
7540 | =for apidoc sv_true | |
7541 | ||
7542 | Returns true if the SV has a true value by Perl's rules. | |
645c22ef DM |
7543 | Use the C<SvTRUE> macro instead, which may call C<sv_true()> or may |
7544 | instead use an in-line version. | |
c461cf8f JH |
7545 | |
7546 | =cut | |
7547 | */ | |
7548 | ||
79072805 | 7549 | I32 |
864dbfa3 | 7550 | Perl_sv_true(pTHX_ register SV *sv) |
79072805 | 7551 | { |
8990e307 LW |
7552 | if (!sv) |
7553 | return 0; | |
79072805 | 7554 | if (SvPOK(sv)) { |
823a54a3 AL |
7555 | register const XPV* const tXpv = (XPV*)SvANY(sv); |
7556 | if (tXpv && | |
c2f1de04 | 7557 | (tXpv->xpv_cur > 1 || |
339049b0 | 7558 | (tXpv->xpv_cur && *sv->sv_u.svu_pv != '0'))) |
79072805 LW |
7559 | return 1; |
7560 | else | |
7561 | return 0; | |
7562 | } | |
7563 | else { | |
7564 | if (SvIOK(sv)) | |
463ee0b2 | 7565 | return SvIVX(sv) != 0; |
79072805 LW |
7566 | else { |
7567 | if (SvNOK(sv)) | |
463ee0b2 | 7568 | return SvNVX(sv) != 0.0; |
79072805 | 7569 | else |
463ee0b2 | 7570 | return sv_2bool(sv); |
79072805 LW |
7571 | } |
7572 | } | |
7573 | } | |
79072805 | 7574 | |
645c22ef | 7575 | /* |
c461cf8f JH |
7576 | =for apidoc sv_pvn_force |
7577 | ||
7578 | Get a sensible string out of the SV somehow. | |
645c22ef DM |
7579 | A private implementation of the C<SvPV_force> macro for compilers which |
7580 | can't cope with complex macro expressions. Always use the macro instead. | |
c461cf8f | 7581 | |
8d6d96c1 HS |
7582 | =for apidoc sv_pvn_force_flags |
7583 | ||
7584 | Get a sensible string out of the SV somehow. | |
7585 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<sv> if | |
7586 | appropriate, else not. C<sv_pvn_force> and C<sv_pvn_force_nomg> are | |
7587 | implemented in terms of this function. | |
645c22ef DM |
7588 | You normally want to use the various wrapper macros instead: see |
7589 | C<SvPV_force> and C<SvPV_force_nomg> | |
8d6d96c1 HS |
7590 | |
7591 | =cut | |
7592 | */ | |
7593 | ||
7594 | char * | |
7595 | Perl_sv_pvn_force_flags(pTHX_ SV *sv, STRLEN *lp, I32 flags) | |
7596 | { | |
a0d0e21e | 7597 | |
6fc92669 | 7598 | if (SvTHINKFIRST(sv) && !SvROK(sv)) |
765f542d | 7599 | sv_force_normal_flags(sv, 0); |
1c846c1f | 7600 | |
a0d0e21e | 7601 | if (SvPOK(sv)) { |
13c5b33c NC |
7602 | if (lp) |
7603 | *lp = SvCUR(sv); | |
a0d0e21e LW |
7604 | } |
7605 | else { | |
a3b680e6 | 7606 | char *s; |
13c5b33c NC |
7607 | STRLEN len; |
7608 | ||
4d84ee25 | 7609 | if (SvREADONLY(sv) && !(flags & SV_MUTABLE_RETURN)) { |
b64e5050 | 7610 | const char * const ref = sv_reftype(sv,0); |
4d84ee25 NC |
7611 | if (PL_op) |
7612 | Perl_croak(aTHX_ "Can't coerce readonly %s to string in %s", | |
b64e5050 | 7613 | ref, OP_NAME(PL_op)); |
4d84ee25 | 7614 | else |
b64e5050 | 7615 | Perl_croak(aTHX_ "Can't coerce readonly %s to string", ref); |
4d84ee25 | 7616 | } |
b64e5050 | 7617 | if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) |
cea2e8a9 | 7618 | Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0), |
53e06cf0 | 7619 | OP_NAME(PL_op)); |
b64e5050 | 7620 | s = sv_2pv_flags(sv, &len, flags); |
13c5b33c NC |
7621 | if (lp) |
7622 | *lp = len; | |
7623 | ||
3f7c398e | 7624 | if (s != SvPVX_const(sv)) { /* Almost, but not quite, sv_setpvn() */ |
a0d0e21e LW |
7625 | if (SvROK(sv)) |
7626 | sv_unref(sv); | |
862a34c6 | 7627 | SvUPGRADE(sv, SVt_PV); /* Never FALSE */ |
a0d0e21e | 7628 | SvGROW(sv, len + 1); |
706aa1c9 | 7629 | Move(s,SvPVX(sv),len,char); |
a0d0e21e LW |
7630 | SvCUR_set(sv, len); |
7631 | *SvEND(sv) = '\0'; | |
7632 | } | |
7633 | if (!SvPOK(sv)) { | |
7634 | SvPOK_on(sv); /* validate pointer */ | |
7635 | SvTAINT(sv); | |
1d7c1841 | 7636 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
3f7c398e | 7637 | PTR2UV(sv),SvPVX_const(sv))); |
a0d0e21e LW |
7638 | } |
7639 | } | |
4d84ee25 | 7640 | return SvPVX_mutable(sv); |
a0d0e21e LW |
7641 | } |
7642 | ||
645c22ef | 7643 | /* |
645c22ef DM |
7644 | =for apidoc sv_pvbyten_force |
7645 | ||
0feed65a | 7646 | The backend for the C<SvPVbytex_force> macro. Always use the macro instead. |
645c22ef DM |
7647 | |
7648 | =cut | |
7649 | */ | |
7650 | ||
7340a771 GS |
7651 | char * |
7652 | Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp) | |
7653 | { | |
46ec2f14 | 7654 | sv_pvn_force(sv,lp); |
ffebcc3e | 7655 | sv_utf8_downgrade(sv,0); |
46ec2f14 TS |
7656 | *lp = SvCUR(sv); |
7657 | return SvPVX(sv); | |
7340a771 GS |
7658 | } |
7659 | ||
645c22ef | 7660 | /* |
c461cf8f JH |
7661 | =for apidoc sv_pvutf8n_force |
7662 | ||
0feed65a | 7663 | The backend for the C<SvPVutf8x_force> macro. Always use the macro instead. |
c461cf8f JH |
7664 | |
7665 | =cut | |
7666 | */ | |
7667 | ||
7340a771 GS |
7668 | char * |
7669 | Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp) | |
7670 | { | |
46ec2f14 | 7671 | sv_pvn_force(sv,lp); |
560a288e | 7672 | sv_utf8_upgrade(sv); |
46ec2f14 TS |
7673 | *lp = SvCUR(sv); |
7674 | return SvPVX(sv); | |
7340a771 GS |
7675 | } |
7676 | ||
c461cf8f JH |
7677 | /* |
7678 | =for apidoc sv_reftype | |
7679 | ||
7680 | Returns a string describing what the SV is a reference to. | |
7681 | ||
7682 | =cut | |
7683 | */ | |
7684 | ||
1cb0ed9b | 7685 | char * |
bfed75c6 | 7686 | Perl_sv_reftype(pTHX_ const SV *sv, int ob) |
a0d0e21e | 7687 | { |
07409e01 NC |
7688 | /* The fact that I don't need to downcast to char * everywhere, only in ?: |
7689 | inside return suggests a const propagation bug in g++. */ | |
c86bf373 | 7690 | if (ob && SvOBJECT(sv)) { |
1b6737cc | 7691 | char * const name = HvNAME_get(SvSTASH(sv)); |
07409e01 | 7692 | return name ? name : (char *) "__ANON__"; |
c86bf373 | 7693 | } |
a0d0e21e LW |
7694 | else { |
7695 | switch (SvTYPE(sv)) { | |
7696 | case SVt_NULL: | |
7697 | case SVt_IV: | |
7698 | case SVt_NV: | |
7699 | case SVt_RV: | |
7700 | case SVt_PV: | |
7701 | case SVt_PVIV: | |
7702 | case SVt_PVNV: | |
7703 | case SVt_PVMG: | |
7704 | case SVt_PVBM: | |
1cb0ed9b | 7705 | if (SvVOK(sv)) |
439cb1c4 | 7706 | return "VSTRING"; |
a0d0e21e LW |
7707 | if (SvROK(sv)) |
7708 | return "REF"; | |
7709 | else | |
7710 | return "SCALAR"; | |
1cb0ed9b | 7711 | |
07409e01 | 7712 | case SVt_PVLV: return (char *) (SvROK(sv) ? "REF" |
be65207d DM |
7713 | /* tied lvalues should appear to be |
7714 | * scalars for backwards compatitbility */ | |
7715 | : (LvTYPE(sv) == 't' || LvTYPE(sv) == 'T') | |
07409e01 | 7716 | ? "SCALAR" : "LVALUE"); |
a0d0e21e LW |
7717 | case SVt_PVAV: return "ARRAY"; |
7718 | case SVt_PVHV: return "HASH"; | |
7719 | case SVt_PVCV: return "CODE"; | |
7720 | case SVt_PVGV: return "GLOB"; | |
1d2dff63 | 7721 | case SVt_PVFM: return "FORMAT"; |
27f9d8f3 | 7722 | case SVt_PVIO: return "IO"; |
a0d0e21e LW |
7723 | default: return "UNKNOWN"; |
7724 | } | |
7725 | } | |
7726 | } | |
7727 | ||
954c1994 GS |
7728 | /* |
7729 | =for apidoc sv_isobject | |
7730 | ||
7731 | Returns a boolean indicating whether the SV is an RV pointing to a blessed | |
7732 | object. If the SV is not an RV, or if the object is not blessed, then this | |
7733 | will return false. | |
7734 | ||
7735 | =cut | |
7736 | */ | |
7737 | ||
463ee0b2 | 7738 | int |
864dbfa3 | 7739 | Perl_sv_isobject(pTHX_ SV *sv) |
85e6fe83 | 7740 | { |
68dc0745 | 7741 | if (!sv) |
7742 | return 0; | |
5b295bef | 7743 | SvGETMAGIC(sv); |
85e6fe83 LW |
7744 | if (!SvROK(sv)) |
7745 | return 0; | |
7746 | sv = (SV*)SvRV(sv); | |
7747 | if (!SvOBJECT(sv)) | |
7748 | return 0; | |
7749 | return 1; | |
7750 | } | |
7751 | ||
954c1994 GS |
7752 | /* |
7753 | =for apidoc sv_isa | |
7754 | ||
7755 | Returns a boolean indicating whether the SV is blessed into the specified | |
7756 | class. This does not check for subtypes; use C<sv_derived_from> to verify | |
7757 | an inheritance relationship. | |
7758 | ||
7759 | =cut | |
7760 | */ | |
7761 | ||
85e6fe83 | 7762 | int |
864dbfa3 | 7763 | Perl_sv_isa(pTHX_ SV *sv, const char *name) |
463ee0b2 | 7764 | { |
bfcb3514 | 7765 | const char *hvname; |
68dc0745 | 7766 | if (!sv) |
7767 | return 0; | |
5b295bef | 7768 | SvGETMAGIC(sv); |
ed6116ce | 7769 | if (!SvROK(sv)) |
463ee0b2 | 7770 | return 0; |
ed6116ce LW |
7771 | sv = (SV*)SvRV(sv); |
7772 | if (!SvOBJECT(sv)) | |
463ee0b2 | 7773 | return 0; |
bfcb3514 NC |
7774 | hvname = HvNAME_get(SvSTASH(sv)); |
7775 | if (!hvname) | |
e27ad1f2 | 7776 | return 0; |
463ee0b2 | 7777 | |
bfcb3514 | 7778 | return strEQ(hvname, name); |
463ee0b2 LW |
7779 | } |
7780 | ||
954c1994 GS |
7781 | /* |
7782 | =for apidoc newSVrv | |
7783 | ||
7784 | Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then | |
7785 | it will be upgraded to one. If C<classname> is non-null then the new SV will | |
7786 | be blessed in the specified package. The new SV is returned and its | |
7787 | reference count is 1. | |
7788 | ||
7789 | =cut | |
7790 | */ | |
7791 | ||
463ee0b2 | 7792 | SV* |
864dbfa3 | 7793 | Perl_newSVrv(pTHX_ SV *rv, const char *classname) |
463ee0b2 | 7794 | { |
463ee0b2 LW |
7795 | SV *sv; |
7796 | ||
4561caa4 | 7797 | new_SV(sv); |
51cf62d8 | 7798 | |
765f542d | 7799 | SV_CHECK_THINKFIRST_COW_DROP(rv); |
51cf62d8 | 7800 | SvAMAGIC_off(rv); |
51cf62d8 | 7801 | |
0199fce9 | 7802 | if (SvTYPE(rv) >= SVt_PVMG) { |
a3b680e6 | 7803 | const U32 refcnt = SvREFCNT(rv); |
0199fce9 JD |
7804 | SvREFCNT(rv) = 0; |
7805 | sv_clear(rv); | |
7806 | SvFLAGS(rv) = 0; | |
7807 | SvREFCNT(rv) = refcnt; | |
7808 | } | |
7809 | ||
51cf62d8 | 7810 | if (SvTYPE(rv) < SVt_RV) |
0199fce9 JD |
7811 | sv_upgrade(rv, SVt_RV); |
7812 | else if (SvTYPE(rv) > SVt_RV) { | |
8bd4d4c5 | 7813 | SvPV_free(rv); |
0199fce9 JD |
7814 | SvCUR_set(rv, 0); |
7815 | SvLEN_set(rv, 0); | |
7816 | } | |
51cf62d8 | 7817 | |
0c34ef67 | 7818 | SvOK_off(rv); |
b162af07 | 7819 | SvRV_set(rv, sv); |
ed6116ce | 7820 | SvROK_on(rv); |
463ee0b2 | 7821 | |
a0d0e21e | 7822 | if (classname) { |
1b6737cc | 7823 | HV* const stash = gv_stashpv(classname, TRUE); |
a0d0e21e LW |
7824 | (void)sv_bless(rv, stash); |
7825 | } | |
7826 | return sv; | |
7827 | } | |
7828 | ||
954c1994 GS |
7829 | /* |
7830 | =for apidoc sv_setref_pv | |
7831 | ||
7832 | Copies a pointer into a new SV, optionally blessing the SV. The C<rv> | |
7833 | argument will be upgraded to an RV. That RV will be modified to point to | |
7834 | the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed | |
7835 | into the SV. The C<classname> argument indicates the package for the | |
7836 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 7837 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
7838 | |
7839 | Do not use with other Perl types such as HV, AV, SV, CV, because those | |
7840 | objects will become corrupted by the pointer copy process. | |
7841 | ||
7842 | Note that C<sv_setref_pvn> copies the string while this copies the pointer. | |
7843 | ||
7844 | =cut | |
7845 | */ | |
7846 | ||
a0d0e21e | 7847 | SV* |
864dbfa3 | 7848 | Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv) |
a0d0e21e | 7849 | { |
189b2af5 | 7850 | if (!pv) { |
3280af22 | 7851 | sv_setsv(rv, &PL_sv_undef); |
189b2af5 GS |
7852 | SvSETMAGIC(rv); |
7853 | } | |
a0d0e21e | 7854 | else |
56431972 | 7855 | sv_setiv(newSVrv(rv,classname), PTR2IV(pv)); |
a0d0e21e LW |
7856 | return rv; |
7857 | } | |
7858 | ||
954c1994 GS |
7859 | /* |
7860 | =for apidoc sv_setref_iv | |
7861 | ||
7862 | Copies an integer into a new SV, optionally blessing the SV. The C<rv> | |
7863 | argument will be upgraded to an RV. That RV will be modified to point to | |
7864 | the new SV. The C<classname> argument indicates the package for the | |
7865 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 7866 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
7867 | |
7868 | =cut | |
7869 | */ | |
7870 | ||
a0d0e21e | 7871 | SV* |
864dbfa3 | 7872 | Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv) |
a0d0e21e LW |
7873 | { |
7874 | sv_setiv(newSVrv(rv,classname), iv); | |
7875 | return rv; | |
7876 | } | |
7877 | ||
954c1994 | 7878 | /* |
e1c57cef JH |
7879 | =for apidoc sv_setref_uv |
7880 | ||
7881 | Copies an unsigned integer into a new SV, optionally blessing the SV. The C<rv> | |
7882 | argument will be upgraded to an RV. That RV will be modified to point to | |
7883 | the new SV. The C<classname> argument indicates the package for the | |
7884 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 7885 | will have a reference count of 1, and the RV will be returned. |
e1c57cef JH |
7886 | |
7887 | =cut | |
7888 | */ | |
7889 | ||
7890 | SV* | |
7891 | Perl_sv_setref_uv(pTHX_ SV *rv, const char *classname, UV uv) | |
7892 | { | |
7893 | sv_setuv(newSVrv(rv,classname), uv); | |
7894 | return rv; | |
7895 | } | |
7896 | ||
7897 | /* | |
954c1994 GS |
7898 | =for apidoc sv_setref_nv |
7899 | ||
7900 | Copies a double into a new SV, optionally blessing the SV. The C<rv> | |
7901 | argument will be upgraded to an RV. That RV will be modified to point to | |
7902 | the new 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 | |
d34c2299 | 7904 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
7905 | |
7906 | =cut | |
7907 | */ | |
7908 | ||
a0d0e21e | 7909 | SV* |
65202027 | 7910 | Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv) |
a0d0e21e LW |
7911 | { |
7912 | sv_setnv(newSVrv(rv,classname), nv); | |
7913 | return rv; | |
7914 | } | |
463ee0b2 | 7915 | |
954c1994 GS |
7916 | /* |
7917 | =for apidoc sv_setref_pvn | |
7918 | ||
7919 | Copies a string into a new SV, optionally blessing the SV. The length of the | |
7920 | string must be specified with C<n>. The C<rv> argument will be upgraded to | |
7921 | an RV. That RV will be modified to point to the new SV. The C<classname> | |
7922 | argument indicates the package for the blessing. Set C<classname> to | |
7a5fa8a2 | 7923 | C<Nullch> to avoid the blessing. The new SV will have a reference count |
d34c2299 | 7924 | of 1, and the RV will be returned. |
954c1994 GS |
7925 | |
7926 | Note that C<sv_setref_pv> copies the pointer while this copies the string. | |
7927 | ||
7928 | =cut | |
7929 | */ | |
7930 | ||
a0d0e21e | 7931 | SV* |
1b6737cc | 7932 | Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, const char *pv, STRLEN n) |
a0d0e21e LW |
7933 | { |
7934 | sv_setpvn(newSVrv(rv,classname), pv, n); | |
463ee0b2 LW |
7935 | return rv; |
7936 | } | |
7937 | ||
954c1994 GS |
7938 | /* |
7939 | =for apidoc sv_bless | |
7940 | ||
7941 | Blesses an SV into a specified package. The SV must be an RV. The package | |
7942 | must be designated by its stash (see C<gv_stashpv()>). The reference count | |
7943 | of the SV is unaffected. | |
7944 | ||
7945 | =cut | |
7946 | */ | |
7947 | ||
a0d0e21e | 7948 | SV* |
864dbfa3 | 7949 | Perl_sv_bless(pTHX_ SV *sv, HV *stash) |
a0d0e21e | 7950 | { |
76e3520e | 7951 | SV *tmpRef; |
a0d0e21e | 7952 | if (!SvROK(sv)) |
cea2e8a9 | 7953 | Perl_croak(aTHX_ "Can't bless non-reference value"); |
76e3520e GS |
7954 | tmpRef = SvRV(sv); |
7955 | if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) { | |
7956 | if (SvREADONLY(tmpRef)) | |
cea2e8a9 | 7957 | Perl_croak(aTHX_ PL_no_modify); |
76e3520e GS |
7958 | if (SvOBJECT(tmpRef)) { |
7959 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 7960 | --PL_sv_objcount; |
76e3520e | 7961 | SvREFCNT_dec(SvSTASH(tmpRef)); |
2e3febc6 | 7962 | } |
a0d0e21e | 7963 | } |
76e3520e GS |
7964 | SvOBJECT_on(tmpRef); |
7965 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 7966 | ++PL_sv_objcount; |
862a34c6 | 7967 | SvUPGRADE(tmpRef, SVt_PVMG); |
b162af07 | 7968 | SvSTASH_set(tmpRef, (HV*)SvREFCNT_inc(stash)); |
a0d0e21e | 7969 | |
2e3febc6 CS |
7970 | if (Gv_AMG(stash)) |
7971 | SvAMAGIC_on(sv); | |
7972 | else | |
7973 | SvAMAGIC_off(sv); | |
a0d0e21e | 7974 | |
1edbfb88 AB |
7975 | if(SvSMAGICAL(tmpRef)) |
7976 | if(mg_find(tmpRef, PERL_MAGIC_ext) || mg_find(tmpRef, PERL_MAGIC_uvar)) | |
7977 | mg_set(tmpRef); | |
7978 | ||
7979 | ||
ecdeb87c | 7980 | |
a0d0e21e LW |
7981 | return sv; |
7982 | } | |
7983 | ||
645c22ef | 7984 | /* Downgrades a PVGV to a PVMG. |
645c22ef DM |
7985 | */ |
7986 | ||
76e3520e | 7987 | STATIC void |
cea2e8a9 | 7988 | S_sv_unglob(pTHX_ SV *sv) |
a0d0e21e | 7989 | { |
850fabdf GS |
7990 | void *xpvmg; |
7991 | ||
a0d0e21e LW |
7992 | assert(SvTYPE(sv) == SVt_PVGV); |
7993 | SvFAKE_off(sv); | |
7994 | if (GvGP(sv)) | |
1edc1566 | 7995 | gp_free((GV*)sv); |
e826b3c7 | 7996 | if (GvSTASH(sv)) { |
e15faf7d | 7997 | sv_del_backref((SV*)GvSTASH(sv), sv); |
e826b3c7 GS |
7998 | GvSTASH(sv) = Nullhv; |
7999 | } | |
14befaf4 | 8000 | sv_unmagic(sv, PERL_MAGIC_glob); |
a0d0e21e | 8001 | Safefree(GvNAME(sv)); |
a5f75d66 | 8002 | GvMULTI_off(sv); |
850fabdf GS |
8003 | |
8004 | /* need to keep SvANY(sv) in the right arena */ | |
8005 | xpvmg = new_XPVMG(); | |
8006 | StructCopy(SvANY(sv), xpvmg, XPVMG); | |
8007 | del_XPVGV(SvANY(sv)); | |
8008 | SvANY(sv) = xpvmg; | |
8009 | ||
a0d0e21e LW |
8010 | SvFLAGS(sv) &= ~SVTYPEMASK; |
8011 | SvFLAGS(sv) |= SVt_PVMG; | |
8012 | } | |
8013 | ||
954c1994 | 8014 | /* |
840a7b70 | 8015 | =for apidoc sv_unref_flags |
954c1994 GS |
8016 | |
8017 | Unsets the RV status of the SV, and decrements the reference count of | |
8018 | whatever was being referenced by the RV. This can almost be thought of | |
840a7b70 IZ |
8019 | as a reversal of C<newSVrv>. The C<cflags> argument can contain |
8020 | C<SV_IMMEDIATE_UNREF> to force the reference count to be decremented | |
8021 | (otherwise the decrementing is conditional on the reference count being | |
8022 | different from one or the reference being a readonly SV). | |
7889fe52 | 8023 | See C<SvROK_off>. |
954c1994 GS |
8024 | |
8025 | =cut | |
8026 | */ | |
8027 | ||
ed6116ce | 8028 | void |
e15faf7d | 8029 | Perl_sv_unref_flags(pTHX_ SV *ref, U32 flags) |
ed6116ce | 8030 | { |
b64e5050 | 8031 | SV* const target = SvRV(ref); |
810b8aa5 | 8032 | |
e15faf7d NC |
8033 | if (SvWEAKREF(ref)) { |
8034 | sv_del_backref(target, ref); | |
8035 | SvWEAKREF_off(ref); | |
8036 | SvRV_set(ref, NULL); | |
810b8aa5 GS |
8037 | return; |
8038 | } | |
e15faf7d NC |
8039 | SvRV_set(ref, NULL); |
8040 | SvROK_off(ref); | |
8041 | /* You can't have a || SvREADONLY(target) here, as $a = $$a, where $a was | |
04ca4930 | 8042 | assigned to as BEGIN {$a = \"Foo"} will fail. */ |
e15faf7d NC |
8043 | if (SvREFCNT(target) != 1 || (flags & SV_IMMEDIATE_UNREF)) |
8044 | SvREFCNT_dec(target); | |
840a7b70 | 8045 | else /* XXX Hack, but hard to make $a=$a->[1] work otherwise */ |
e15faf7d | 8046 | sv_2mortal(target); /* Schedule for freeing later */ |
ed6116ce | 8047 | } |
8990e307 | 8048 | |
840a7b70 | 8049 | /* |
645c22ef DM |
8050 | =for apidoc sv_untaint |
8051 | ||
8052 | Untaint an SV. Use C<SvTAINTED_off> instead. | |
8053 | =cut | |
8054 | */ | |
8055 | ||
bbce6d69 | 8056 | void |
864dbfa3 | 8057 | Perl_sv_untaint(pTHX_ SV *sv) |
bbce6d69 | 8058 | { |
13f57bf8 | 8059 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
b64e5050 | 8060 | MAGIC * const mg = mg_find(sv, PERL_MAGIC_taint); |
36477c24 | 8061 | if (mg) |
565764a8 | 8062 | mg->mg_len &= ~1; |
36477c24 | 8063 | } |
bbce6d69 | 8064 | } |
8065 | ||
645c22ef DM |
8066 | /* |
8067 | =for apidoc sv_tainted | |
8068 | ||
8069 | Test an SV for taintedness. Use C<SvTAINTED> instead. | |
8070 | =cut | |
8071 | */ | |
8072 | ||
bbce6d69 | 8073 | bool |
864dbfa3 | 8074 | Perl_sv_tainted(pTHX_ SV *sv) |
bbce6d69 | 8075 | { |
13f57bf8 | 8076 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
823a54a3 | 8077 | const MAGIC * const mg = mg_find(sv, PERL_MAGIC_taint); |
2ddb8a4f | 8078 | if (mg && (mg->mg_len & 1) ) |
36477c24 | 8079 | return TRUE; |
8080 | } | |
8081 | return FALSE; | |
bbce6d69 | 8082 | } |
8083 | ||
09540bc3 JH |
8084 | /* |
8085 | =for apidoc sv_setpviv | |
8086 | ||
8087 | Copies an integer into the given SV, also updating its string value. | |
8088 | Does not handle 'set' magic. See C<sv_setpviv_mg>. | |
8089 | ||
8090 | =cut | |
8091 | */ | |
8092 | ||
8093 | void | |
8094 | Perl_sv_setpviv(pTHX_ SV *sv, IV iv) | |
8095 | { | |
8096 | char buf[TYPE_CHARS(UV)]; | |
8097 | char *ebuf; | |
b64e5050 | 8098 | char * const ptr = uiv_2buf(buf, iv, 0, 0, &ebuf); |
09540bc3 JH |
8099 | |
8100 | sv_setpvn(sv, ptr, ebuf - ptr); | |
8101 | } | |
8102 | ||
8103 | /* | |
8104 | =for apidoc sv_setpviv_mg | |
8105 | ||
8106 | Like C<sv_setpviv>, but also handles 'set' magic. | |
8107 | ||
8108 | =cut | |
8109 | */ | |
8110 | ||
8111 | void | |
8112 | Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv) | |
8113 | { | |
df7eb254 | 8114 | sv_setpviv(sv, iv); |
09540bc3 JH |
8115 | SvSETMAGIC(sv); |
8116 | } | |
8117 | ||
cea2e8a9 | 8118 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
8119 | |
8120 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
8121 | * version of the main function, (which may itself be aliased to us). | |
8122 | * Don't access this version directly. | |
8123 | */ | |
8124 | ||
cea2e8a9 GS |
8125 | void |
8126 | Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...) | |
8127 | { | |
8128 | dTHX; | |
8129 | va_list args; | |
8130 | va_start(args, pat); | |
c5be433b | 8131 | sv_vsetpvf(sv, pat, &args); |
cea2e8a9 GS |
8132 | va_end(args); |
8133 | } | |
8134 | ||
645c22ef DM |
8135 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
8136 | * version of the main function, (which may itself be aliased to us). | |
8137 | * Don't access this version directly. | |
8138 | */ | |
cea2e8a9 GS |
8139 | |
8140 | void | |
8141 | Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
8142 | { | |
8143 | dTHX; | |
8144 | va_list args; | |
8145 | va_start(args, pat); | |
c5be433b | 8146 | sv_vsetpvf_mg(sv, pat, &args); |
cea2e8a9 | 8147 | va_end(args); |
cea2e8a9 GS |
8148 | } |
8149 | #endif | |
8150 | ||
954c1994 GS |
8151 | /* |
8152 | =for apidoc sv_setpvf | |
8153 | ||
bffc3d17 SH |
8154 | Works like C<sv_catpvf> but copies the text into the SV instead of |
8155 | appending it. Does not handle 'set' magic. See C<sv_setpvf_mg>. | |
954c1994 GS |
8156 | |
8157 | =cut | |
8158 | */ | |
8159 | ||
46fc3d4c | 8160 | void |
864dbfa3 | 8161 | Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 8162 | { |
8163 | va_list args; | |
46fc3d4c | 8164 | va_start(args, pat); |
c5be433b | 8165 | sv_vsetpvf(sv, pat, &args); |
46fc3d4c | 8166 | va_end(args); |
8167 | } | |
8168 | ||
bffc3d17 SH |
8169 | /* |
8170 | =for apidoc sv_vsetpvf | |
8171 | ||
8172 | Works like C<sv_vcatpvf> but copies the text into the SV instead of | |
8173 | appending it. Does not handle 'set' magic. See C<sv_vsetpvf_mg>. | |
8174 | ||
8175 | Usually used via its frontend C<sv_setpvf>. | |
8176 | ||
8177 | =cut | |
8178 | */ | |
645c22ef | 8179 | |
c5be433b GS |
8180 | void |
8181 | Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args) | |
8182 | { | |
8183 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
8184 | } | |
ef50df4b | 8185 | |
954c1994 GS |
8186 | /* |
8187 | =for apidoc sv_setpvf_mg | |
8188 | ||
8189 | Like C<sv_setpvf>, but also handles 'set' magic. | |
8190 | ||
8191 | =cut | |
8192 | */ | |
8193 | ||
ef50df4b | 8194 | void |
864dbfa3 | 8195 | Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
8196 | { |
8197 | va_list args; | |
ef50df4b | 8198 | va_start(args, pat); |
c5be433b | 8199 | sv_vsetpvf_mg(sv, pat, &args); |
ef50df4b | 8200 | va_end(args); |
c5be433b GS |
8201 | } |
8202 | ||
bffc3d17 SH |
8203 | /* |
8204 | =for apidoc sv_vsetpvf_mg | |
8205 | ||
8206 | Like C<sv_vsetpvf>, but also handles 'set' magic. | |
8207 | ||
8208 | Usually used via its frontend C<sv_setpvf_mg>. | |
8209 | ||
8210 | =cut | |
8211 | */ | |
645c22ef | 8212 | |
c5be433b GS |
8213 | void |
8214 | Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
8215 | { | |
8216 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
ef50df4b GS |
8217 | SvSETMAGIC(sv); |
8218 | } | |
8219 | ||
cea2e8a9 | 8220 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
8221 | |
8222 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
8223 | * version of the main function, (which may itself be aliased to us). | |
8224 | * Don't access this version directly. | |
8225 | */ | |
8226 | ||
cea2e8a9 GS |
8227 | void |
8228 | Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...) | |
8229 | { | |
8230 | dTHX; | |
8231 | va_list args; | |
8232 | va_start(args, pat); | |
c5be433b | 8233 | sv_vcatpvf(sv, pat, &args); |
cea2e8a9 GS |
8234 | va_end(args); |
8235 | } | |
8236 | ||
645c22ef DM |
8237 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
8238 | * version of the main function, (which may itself be aliased to us). | |
8239 | * Don't access this version directly. | |
8240 | */ | |
8241 | ||
cea2e8a9 GS |
8242 | void |
8243 | Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
8244 | { | |
8245 | dTHX; | |
8246 | va_list args; | |
8247 | va_start(args, pat); | |
c5be433b | 8248 | sv_vcatpvf_mg(sv, pat, &args); |
cea2e8a9 | 8249 | va_end(args); |
cea2e8a9 GS |
8250 | } |
8251 | #endif | |
8252 | ||
954c1994 GS |
8253 | /* |
8254 | =for apidoc sv_catpvf | |
8255 | ||
d5ce4a7c GA |
8256 | Processes its arguments like C<sprintf> and appends the formatted |
8257 | output to an SV. If the appended data contains "wide" characters | |
8258 | (including, but not limited to, SVs with a UTF-8 PV formatted with %s, | |
8259 | and characters >255 formatted with %c), the original SV might get | |
bffc3d17 | 8260 | upgraded to UTF-8. Handles 'get' magic, but not 'set' magic. See |
cdd94ca7 NC |
8261 | C<sv_catpvf_mg>. If the original SV was UTF-8, the pattern should be |
8262 | valid UTF-8; if the original SV was bytes, the pattern should be too. | |
954c1994 | 8263 | |
d5ce4a7c | 8264 | =cut */ |
954c1994 | 8265 | |
46fc3d4c | 8266 | void |
864dbfa3 | 8267 | Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 8268 | { |
8269 | va_list args; | |
46fc3d4c | 8270 | va_start(args, pat); |
c5be433b | 8271 | sv_vcatpvf(sv, pat, &args); |
46fc3d4c | 8272 | va_end(args); |
8273 | } | |
8274 | ||
bffc3d17 SH |
8275 | /* |
8276 | =for apidoc sv_vcatpvf | |
8277 | ||
8278 | Processes its arguments like C<vsprintf> and appends the formatted output | |
8279 | to an SV. Does not handle 'set' magic. See C<sv_vcatpvf_mg>. | |
8280 | ||
8281 | Usually used via its frontend C<sv_catpvf>. | |
8282 | ||
8283 | =cut | |
8284 | */ | |
645c22ef | 8285 | |
ef50df4b | 8286 | void |
c5be433b GS |
8287 | Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args) |
8288 | { | |
8289 | sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
8290 | } | |
8291 | ||
954c1994 GS |
8292 | /* |
8293 | =for apidoc sv_catpvf_mg | |
8294 | ||
8295 | Like C<sv_catpvf>, but also handles 'set' magic. | |
8296 | ||
8297 | =cut | |
8298 | */ | |
8299 | ||
c5be433b | 8300 | void |
864dbfa3 | 8301 | Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
8302 | { |
8303 | va_list args; | |
ef50df4b | 8304 | va_start(args, pat); |
c5be433b | 8305 | sv_vcatpvf_mg(sv, pat, &args); |
ef50df4b | 8306 | va_end(args); |
c5be433b GS |
8307 | } |
8308 | ||
bffc3d17 SH |
8309 | /* |
8310 | =for apidoc sv_vcatpvf_mg | |
8311 | ||
8312 | Like C<sv_vcatpvf>, but also handles 'set' magic. | |
8313 | ||
8314 | Usually used via its frontend C<sv_catpvf_mg>. | |
8315 | ||
8316 | =cut | |
8317 | */ | |
645c22ef | 8318 | |
c5be433b GS |
8319 | void |
8320 | Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
8321 | { | |
8322 | sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
ef50df4b GS |
8323 | SvSETMAGIC(sv); |
8324 | } | |
8325 | ||
954c1994 GS |
8326 | /* |
8327 | =for apidoc sv_vsetpvfn | |
8328 | ||
bffc3d17 | 8329 | Works like C<sv_vcatpvfn> but copies the text into the SV instead of |
954c1994 GS |
8330 | appending it. |
8331 | ||
bffc3d17 | 8332 | Usually used via one of its frontends C<sv_vsetpvf> and C<sv_vsetpvf_mg>. |
645c22ef | 8333 | |
954c1994 GS |
8334 | =cut |
8335 | */ | |
8336 | ||
46fc3d4c | 8337 | void |
7d5ea4e7 | 8338 | Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 8339 | { |
8340 | sv_setpvn(sv, "", 0); | |
7d5ea4e7 | 8341 | sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted); |
46fc3d4c | 8342 | } |
8343 | ||
645c22ef DM |
8344 | /* private function for use in sv_vcatpvfn via the EXPECT_NUMBER macro */ |
8345 | ||
2d00ba3b | 8346 | STATIC I32 |
9dd79c3f | 8347 | S_expect_number(pTHX_ char** pattern) |
211dfcf1 HS |
8348 | { |
8349 | I32 var = 0; | |
8350 | switch (**pattern) { | |
8351 | case '1': case '2': case '3': | |
8352 | case '4': case '5': case '6': | |
8353 | case '7': case '8': case '9': | |
8354 | while (isDIGIT(**pattern)) | |
8355 | var = var * 10 + (*(*pattern)++ - '0'); | |
8356 | } | |
8357 | return var; | |
8358 | } | |
9dd79c3f | 8359 | #define EXPECT_NUMBER(pattern, var) (var = S_expect_number(aTHX_ &pattern)) |
211dfcf1 | 8360 | |
4151a5fe IZ |
8361 | static char * |
8362 | F0convert(NV nv, char *endbuf, STRLEN *len) | |
8363 | { | |
a3b680e6 | 8364 | const int neg = nv < 0; |
4151a5fe | 8365 | UV uv; |
4151a5fe IZ |
8366 | |
8367 | if (neg) | |
8368 | nv = -nv; | |
8369 | if (nv < UV_MAX) { | |
b464bac0 | 8370 | char *p = endbuf; |
4151a5fe | 8371 | nv += 0.5; |
028f8eaa | 8372 | uv = (UV)nv; |
4151a5fe IZ |
8373 | if (uv & 1 && uv == nv) |
8374 | uv--; /* Round to even */ | |
8375 | do { | |
a3b680e6 | 8376 | const unsigned dig = uv % 10; |
4151a5fe IZ |
8377 | *--p = '0' + dig; |
8378 | } while (uv /= 10); | |
8379 | if (neg) | |
8380 | *--p = '-'; | |
8381 | *len = endbuf - p; | |
8382 | return p; | |
8383 | } | |
8384 | return Nullch; | |
8385 | } | |
8386 | ||
8387 | ||
954c1994 GS |
8388 | /* |
8389 | =for apidoc sv_vcatpvfn | |
8390 | ||
8391 | Processes its arguments like C<vsprintf> and appends the formatted output | |
8392 | to an SV. Uses an array of SVs if the C style variable argument list is | |
8393 | missing (NULL). When running with taint checks enabled, indicates via | |
8394 | C<maybe_tainted> if results are untrustworthy (often due to the use of | |
8395 | locales). | |
8396 | ||
bffc3d17 | 8397 | Usually used via one of its frontends C<sv_vcatpvf> and C<sv_vcatpvf_mg>. |
645c22ef | 8398 | |
954c1994 GS |
8399 | =cut |
8400 | */ | |
8401 | ||
8896765a RB |
8402 | |
8403 | #define VECTORIZE_ARGS vecsv = va_arg(*args, SV*);\ | |
8404 | vecstr = (U8*)SvPV_const(vecsv,veclen);\ | |
8405 | vec_utf8 = DO_UTF8(vecsv); | |
8406 | ||
1ef29b0e RGS |
8407 | /* XXX maybe_tainted is never assigned to, so the doc above is lying. */ |
8408 | ||
46fc3d4c | 8409 | void |
7d5ea4e7 | 8410 | Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 8411 | { |
8412 | char *p; | |
8413 | char *q; | |
a3b680e6 | 8414 | const char *patend; |
fc36a67e | 8415 | STRLEN origlen; |
46fc3d4c | 8416 | I32 svix = 0; |
27da23d5 | 8417 | static const char nullstr[] = "(null)"; |
9c5ffd7c | 8418 | SV *argsv = Nullsv; |
b464bac0 AL |
8419 | bool has_utf8 = DO_UTF8(sv); /* has the result utf8? */ |
8420 | const bool pat_utf8 = has_utf8; /* the pattern is in utf8? */ | |
db79b45b | 8421 | SV *nsv = Nullsv; |
4151a5fe IZ |
8422 | /* Times 4: a decimal digit takes more than 3 binary digits. |
8423 | * NV_DIG: mantissa takes than many decimal digits. | |
8424 | * Plus 32: Playing safe. */ | |
8425 | char ebuf[IV_DIG * 4 + NV_DIG + 32]; | |
8426 | /* large enough for "%#.#f" --chip */ | |
8427 | /* what about long double NVs? --jhi */ | |
db79b45b | 8428 | |
53c1dcc0 AL |
8429 | PERL_UNUSED_ARG(maybe_tainted); |
8430 | ||
46fc3d4c | 8431 | /* no matter what, this is a string now */ |
fc36a67e | 8432 | (void)SvPV_force(sv, origlen); |
46fc3d4c | 8433 | |
8896765a | 8434 | /* special-case "", "%s", and "%-p" (SVf - see below) */ |
46fc3d4c | 8435 | if (patlen == 0) |
8436 | return; | |
0dbb1585 | 8437 | if (patlen == 2 && pat[0] == '%' && pat[1] == 's') { |
2d03de9c AL |
8438 | if (args) { |
8439 | const char * const s = va_arg(*args, char*); | |
8440 | sv_catpv(sv, s ? s : nullstr); | |
8441 | } | |
8442 | else if (svix < svmax) { | |
8443 | sv_catsv(sv, *svargs); | |
8444 | if (DO_UTF8(*svargs)) | |
8445 | SvUTF8_on(sv); | |
8446 | } | |
8447 | return; | |
0dbb1585 | 8448 | } |
8896765a RB |
8449 | if (args && patlen == 3 && pat[0] == '%' && |
8450 | pat[1] == '-' && pat[2] == 'p') { | |
8451 | argsv = va_arg(*args, SV*); | |
8452 | sv_catsv(sv, argsv); | |
8453 | if (DO_UTF8(argsv)) | |
8454 | SvUTF8_on(sv); | |
8455 | return; | |
46fc3d4c | 8456 | } |
8457 | ||
1d917b39 | 8458 | #ifndef USE_LONG_DOUBLE |
4151a5fe | 8459 | /* special-case "%.<number>[gf]" */ |
7af36d83 | 8460 | if ( !args && patlen <= 5 && pat[0] == '%' && pat[1] == '.' |
4151a5fe IZ |
8461 | && (pat[patlen-1] == 'g' || pat[patlen-1] == 'f') ) { |
8462 | unsigned digits = 0; | |
8463 | const char *pp; | |
8464 | ||
8465 | pp = pat + 2; | |
8466 | while (*pp >= '0' && *pp <= '9') | |
8467 | digits = 10 * digits + (*pp++ - '0'); | |
028f8eaa | 8468 | if (pp - pat == (int)patlen - 1) { |
4151a5fe IZ |
8469 | NV nv; |
8470 | ||
7af36d83 | 8471 | if (svix < svmax) |
4151a5fe IZ |
8472 | nv = SvNV(*svargs); |
8473 | else | |
8474 | return; | |
8475 | if (*pp == 'g') { | |
2873255c NC |
8476 | /* Add check for digits != 0 because it seems that some |
8477 | gconverts are buggy in this case, and we don't yet have | |
8478 | a Configure test for this. */ | |
8479 | if (digits && digits < sizeof(ebuf) - NV_DIG - 10) { | |
8480 | /* 0, point, slack */ | |
2e59c212 | 8481 | Gconvert(nv, (int)digits, 0, ebuf); |
4151a5fe IZ |
8482 | sv_catpv(sv, ebuf); |
8483 | if (*ebuf) /* May return an empty string for digits==0 */ | |
8484 | return; | |
8485 | } | |
8486 | } else if (!digits) { | |
8487 | STRLEN l; | |
8488 | ||
8489 | if ((p = F0convert(nv, ebuf + sizeof ebuf, &l))) { | |
8490 | sv_catpvn(sv, p, l); | |
8491 | return; | |
8492 | } | |
8493 | } | |
8494 | } | |
8495 | } | |
1d917b39 | 8496 | #endif /* !USE_LONG_DOUBLE */ |
4151a5fe | 8497 | |
2cf2cfc6 | 8498 | if (!args && svix < svmax && DO_UTF8(*svargs)) |
205f51d8 | 8499 | has_utf8 = TRUE; |
2cf2cfc6 | 8500 | |
46fc3d4c | 8501 | patend = (char*)pat + patlen; |
8502 | for (p = (char*)pat; p < patend; p = q) { | |
8503 | bool alt = FALSE; | |
8504 | bool left = FALSE; | |
b22c7a20 | 8505 | bool vectorize = FALSE; |
211dfcf1 | 8506 | bool vectorarg = FALSE; |
2cf2cfc6 | 8507 | bool vec_utf8 = FALSE; |
46fc3d4c | 8508 | char fill = ' '; |
8509 | char plus = 0; | |
8510 | char intsize = 0; | |
8511 | STRLEN width = 0; | |
fc36a67e | 8512 | STRLEN zeros = 0; |
46fc3d4c | 8513 | bool has_precis = FALSE; |
8514 | STRLEN precis = 0; | |
58e33a90 | 8515 | I32 osvix = svix; |
2cf2cfc6 | 8516 | bool is_utf8 = FALSE; /* is this item utf8? */ |
20f6aaab AS |
8517 | #ifdef HAS_LDBL_SPRINTF_BUG |
8518 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 | 8519 | with sfio - Allen <allens@cpan.org> */ |
20f6aaab AS |
8520 | bool fix_ldbl_sprintf_bug = FALSE; |
8521 | #endif | |
205f51d8 | 8522 | |
46fc3d4c | 8523 | char esignbuf[4]; |
89ebb4a3 | 8524 | U8 utf8buf[UTF8_MAXBYTES+1]; |
46fc3d4c | 8525 | STRLEN esignlen = 0; |
8526 | ||
4d84ee25 | 8527 | const char *eptr = Nullch; |
fc36a67e | 8528 | STRLEN elen = 0; |
81f715da | 8529 | SV *vecsv = Nullsv; |
245d4a47 | 8530 | const U8 *vecstr = Null(U8*); |
b22c7a20 | 8531 | STRLEN veclen = 0; |
934abaf1 | 8532 | char c = 0; |
46fc3d4c | 8533 | int i; |
9c5ffd7c | 8534 | unsigned base = 0; |
8c8eb53c RB |
8535 | IV iv = 0; |
8536 | UV uv = 0; | |
9e5b023a JH |
8537 | /* we need a long double target in case HAS_LONG_DOUBLE but |
8538 | not USE_LONG_DOUBLE | |
8539 | */ | |
35fff930 | 8540 | #if defined(HAS_LONG_DOUBLE) && LONG_DOUBLESIZE > DOUBLESIZE |
9e5b023a JH |
8541 | long double nv; |
8542 | #else | |
65202027 | 8543 | NV nv; |
9e5b023a | 8544 | #endif |
46fc3d4c | 8545 | STRLEN have; |
8546 | STRLEN need; | |
8547 | STRLEN gap; | |
7af36d83 | 8548 | const char *dotstr = "."; |
b22c7a20 | 8549 | STRLEN dotstrlen = 1; |
211dfcf1 | 8550 | I32 efix = 0; /* explicit format parameter index */ |
eb3fce90 | 8551 | I32 ewix = 0; /* explicit width index */ |
211dfcf1 HS |
8552 | I32 epix = 0; /* explicit precision index */ |
8553 | I32 evix = 0; /* explicit vector index */ | |
eb3fce90 | 8554 | bool asterisk = FALSE; |
46fc3d4c | 8555 | |
211dfcf1 | 8556 | /* echo everything up to the next format specification */ |
46fc3d4c | 8557 | for (q = p; q < patend && *q != '%'; ++q) ; |
8558 | if (q > p) { | |
db79b45b JH |
8559 | if (has_utf8 && !pat_utf8) |
8560 | sv_catpvn_utf8_upgrade(sv, p, q - p, nsv); | |
8561 | else | |
8562 | sv_catpvn(sv, p, q - p); | |
46fc3d4c | 8563 | p = q; |
8564 | } | |
8565 | if (q++ >= patend) | |
8566 | break; | |
8567 | ||
211dfcf1 HS |
8568 | /* |
8569 | We allow format specification elements in this order: | |
8570 | \d+\$ explicit format parameter index | |
8571 | [-+ 0#]+ flags | |
a472f209 | 8572 | v|\*(\d+\$)?v vector with optional (optionally specified) arg |
f3583277 | 8573 | 0 flag (as above): repeated to allow "v02" |
211dfcf1 HS |
8574 | \d+|\*(\d+\$)? width using optional (optionally specified) arg |
8575 | \.(\d*|\*(\d+\$)?) precision using optional (optionally specified) arg | |
8576 | [hlqLV] size | |
8896765a RB |
8577 | [%bcdefginopsuxDFOUX] format (mandatory) |
8578 | */ | |
8579 | ||
8580 | if (args) { | |
8581 | /* | |
8582 | As of perl5.9.3, printf format checking is on by default. | |
8583 | Internally, perl uses %p formats to provide an escape to | |
8584 | some extended formatting. This block deals with those | |
8585 | extensions: if it does not match, (char*)q is reset and | |
8586 | the normal format processing code is used. | |
8587 | ||
8588 | Currently defined extensions are: | |
8589 | %p include pointer address (standard) | |
8590 | %-p (SVf) include an SV (previously %_) | |
8591 | %-<num>p include an SV with precision <num> | |
8592 | %1p (VDf) include a v-string (as %vd) | |
8593 | %<num>p reserved for future extensions | |
8594 | ||
8595 | Robin Barker 2005-07-14 | |
211dfcf1 | 8596 | */ |
8896765a RB |
8597 | char* r = q; |
8598 | bool sv = FALSE; | |
8599 | STRLEN n = 0; | |
8600 | if (*q == '-') | |
8601 | sv = *q++; | |
8602 | EXPECT_NUMBER(q, n); | |
8603 | if (*q++ == 'p') { | |
8604 | if (sv) { /* SVf */ | |
8605 | if (n) { | |
8606 | precis = n; | |
8607 | has_precis = TRUE; | |
8608 | } | |
8609 | argsv = va_arg(*args, SV*); | |
8610 | eptr = SvPVx_const(argsv, elen); | |
8611 | if (DO_UTF8(argsv)) | |
8612 | is_utf8 = TRUE; | |
8613 | goto string; | |
8614 | } | |
8615 | #if vdNUMBER | |
8616 | else if (n == vdNUMBER) { /* VDf */ | |
8617 | vectorize = TRUE; | |
8618 | VECTORIZE_ARGS | |
8619 | goto format_vd; | |
8620 | } | |
8621 | #endif | |
8622 | else if (n) { | |
8623 | if (ckWARN_d(WARN_INTERNAL)) | |
8624 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), | |
8625 | "internal %%<num>p might conflict with future printf extensions"); | |
8626 | } | |
8627 | } | |
8628 | q = r; | |
8629 | } | |
8630 | ||
211dfcf1 HS |
8631 | if (EXPECT_NUMBER(q, width)) { |
8632 | if (*q == '$') { | |
8633 | ++q; | |
8634 | efix = width; | |
8635 | } else { | |
8636 | goto gotwidth; | |
8637 | } | |
8638 | } | |
8639 | ||
fc36a67e | 8640 | /* FLAGS */ |
8641 | ||
46fc3d4c | 8642 | while (*q) { |
8643 | switch (*q) { | |
8644 | case ' ': | |
8645 | case '+': | |
8646 | plus = *q++; | |
8647 | continue; | |
8648 | ||
8649 | case '-': | |
8650 | left = TRUE; | |
8651 | q++; | |
8652 | continue; | |
8653 | ||
8654 | case '0': | |
8655 | fill = *q++; | |
8656 | continue; | |
8657 | ||
8658 | case '#': | |
8659 | alt = TRUE; | |
8660 | q++; | |
8661 | continue; | |
8662 | ||
fc36a67e | 8663 | default: |
8664 | break; | |
8665 | } | |
8666 | break; | |
8667 | } | |
46fc3d4c | 8668 | |
211dfcf1 | 8669 | tryasterisk: |
eb3fce90 | 8670 | if (*q == '*') { |
211dfcf1 HS |
8671 | q++; |
8672 | if (EXPECT_NUMBER(q, ewix)) | |
8673 | if (*q++ != '$') | |
8674 | goto unknown; | |
eb3fce90 | 8675 | asterisk = TRUE; |
211dfcf1 HS |
8676 | } |
8677 | if (*q == 'v') { | |
eb3fce90 | 8678 | q++; |
211dfcf1 HS |
8679 | if (vectorize) |
8680 | goto unknown; | |
9cbac4c7 | 8681 | if ((vectorarg = asterisk)) { |
211dfcf1 HS |
8682 | evix = ewix; |
8683 | ewix = 0; | |
8684 | asterisk = FALSE; | |
8685 | } | |
8686 | vectorize = TRUE; | |
8687 | goto tryasterisk; | |
eb3fce90 JH |
8688 | } |
8689 | ||
211dfcf1 | 8690 | if (!asterisk) |
858a90f9 | 8691 | { |
7a5fa8a2 | 8692 | if( *q == '0' ) |
f3583277 | 8693 | fill = *q++; |
211dfcf1 | 8694 | EXPECT_NUMBER(q, width); |
858a90f9 | 8695 | } |
211dfcf1 HS |
8696 | |
8697 | if (vectorize) { | |
8698 | if (vectorarg) { | |
8699 | if (args) | |
8700 | vecsv = va_arg(*args, SV*); | |
8701 | else | |
8702 | vecsv = (evix ? evix <= svmax : svix < svmax) ? | |
3a7a539e | 8703 | svargs[evix ? evix-1 : svix++] : &PL_sv_undef; |
245d4a47 | 8704 | dotstr = SvPV_const(vecsv, dotstrlen); |
211dfcf1 | 8705 | if (DO_UTF8(vecsv)) |
2cf2cfc6 | 8706 | is_utf8 = TRUE; |
211dfcf1 HS |
8707 | } |
8708 | if (args) { | |
8896765a | 8709 | VECTORIZE_ARGS |
eb3fce90 | 8710 | } |
211dfcf1 HS |
8711 | else if (efix ? efix <= svmax : svix < svmax) { |
8712 | vecsv = svargs[efix ? efix-1 : svix++]; | |
245d4a47 | 8713 | vecstr = (U8*)SvPV_const(vecsv,veclen); |
2cf2cfc6 | 8714 | vec_utf8 = DO_UTF8(vecsv); |
d7aa5382 | 8715 | /* if this is a version object, we need to return the |
3f7c398e | 8716 | * stringified representation (which the SvPVX_const has |
d7aa5382 JP |
8717 | * already done for us), but not vectorize the args |
8718 | */ | |
8719 | if ( *q == 'd' && sv_derived_from(vecsv,"version") ) | |
8720 | { | |
8721 | q++; /* skip past the rest of the %vd format */ | |
245d4a47 | 8722 | eptr = (const char *) vecstr; |
42d9b98d | 8723 | elen = veclen; |
d7aa5382 JP |
8724 | vectorize=FALSE; |
8725 | goto string; | |
8726 | } | |
211dfcf1 HS |
8727 | } |
8728 | else { | |
8729 | vecstr = (U8*)""; | |
8730 | veclen = 0; | |
8731 | } | |
eb3fce90 | 8732 | } |
fc36a67e | 8733 | |
eb3fce90 | 8734 | if (asterisk) { |
fc36a67e | 8735 | if (args) |
8736 | i = va_arg(*args, int); | |
8737 | else | |
eb3fce90 JH |
8738 | i = (ewix ? ewix <= svmax : svix < svmax) ? |
8739 | SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 8740 | left |= (i < 0); |
8741 | width = (i < 0) ? -i : i; | |
fc36a67e | 8742 | } |
211dfcf1 | 8743 | gotwidth: |
fc36a67e | 8744 | |
8745 | /* PRECISION */ | |
46fc3d4c | 8746 | |
fc36a67e | 8747 | if (*q == '.') { |
8748 | q++; | |
8749 | if (*q == '*') { | |
211dfcf1 | 8750 | q++; |
7b8dd722 HS |
8751 | if (EXPECT_NUMBER(q, epix) && *q++ != '$') |
8752 | goto unknown; | |
8753 | /* XXX: todo, support specified precision parameter */ | |
8754 | if (epix) | |
211dfcf1 | 8755 | goto unknown; |
46fc3d4c | 8756 | if (args) |
8757 | i = va_arg(*args, int); | |
8758 | else | |
eb3fce90 JH |
8759 | i = (ewix ? ewix <= svmax : svix < svmax) |
8760 | ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 8761 | precis = (i < 0) ? 0 : i; |
fc36a67e | 8762 | } |
8763 | else { | |
8764 | precis = 0; | |
8765 | while (isDIGIT(*q)) | |
8766 | precis = precis * 10 + (*q++ - '0'); | |
8767 | } | |
8768 | has_precis = TRUE; | |
8769 | } | |
46fc3d4c | 8770 | |
fc36a67e | 8771 | /* SIZE */ |
46fc3d4c | 8772 | |
fc36a67e | 8773 | switch (*q) { |
c623ac67 GS |
8774 | #ifdef WIN32 |
8775 | case 'I': /* Ix, I32x, and I64x */ | |
8776 | # ifdef WIN64 | |
8777 | if (q[1] == '6' && q[2] == '4') { | |
8778 | q += 3; | |
8779 | intsize = 'q'; | |
8780 | break; | |
8781 | } | |
8782 | # endif | |
8783 | if (q[1] == '3' && q[2] == '2') { | |
8784 | q += 3; | |
8785 | break; | |
8786 | } | |
8787 | # ifdef WIN64 | |
8788 | intsize = 'q'; | |
8789 | # endif | |
8790 | q++; | |
8791 | break; | |
8792 | #endif | |
9e5b023a | 8793 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
6f9bb7fd | 8794 | case 'L': /* Ld */ |
e5c81feb | 8795 | /* FALL THROUGH */ |
e5c81feb | 8796 | #ifdef HAS_QUAD |
6f9bb7fd | 8797 | case 'q': /* qd */ |
9e5b023a | 8798 | #endif |
6f9bb7fd GS |
8799 | intsize = 'q'; |
8800 | q++; | |
8801 | break; | |
8802 | #endif | |
fc36a67e | 8803 | case 'l': |
9e5b023a | 8804 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
205f51d8 | 8805 | if (*(q + 1) == 'l') { /* lld, llf */ |
fc36a67e | 8806 | intsize = 'q'; |
8807 | q += 2; | |
46fc3d4c | 8808 | break; |
cf2093f6 | 8809 | } |
fc36a67e | 8810 | #endif |
6f9bb7fd | 8811 | /* FALL THROUGH */ |
fc36a67e | 8812 | case 'h': |
cf2093f6 | 8813 | /* FALL THROUGH */ |
fc36a67e | 8814 | case 'V': |
8815 | intsize = *q++; | |
46fc3d4c | 8816 | break; |
8817 | } | |
8818 | ||
fc36a67e | 8819 | /* CONVERSION */ |
8820 | ||
211dfcf1 HS |
8821 | if (*q == '%') { |
8822 | eptr = q++; | |
8823 | elen = 1; | |
8824 | goto string; | |
8825 | } | |
8826 | ||
be75b157 HS |
8827 | if (vectorize) |
8828 | argsv = vecsv; | |
8829 | else if (!args) | |
211dfcf1 HS |
8830 | argsv = (efix ? efix <= svmax : svix < svmax) ? |
8831 | svargs[efix ? efix-1 : svix++] : &PL_sv_undef; | |
8832 | ||
46fc3d4c | 8833 | switch (c = *q++) { |
8834 | ||
8835 | /* STRINGS */ | |
8836 | ||
46fc3d4c | 8837 | case 'c': |
be75b157 | 8838 | uv = (args && !vectorize) ? va_arg(*args, int) : SvIVx(argsv); |
1bd104fb JH |
8839 | if ((uv > 255 || |
8840 | (!UNI_IS_INVARIANT(uv) && SvUTF8(sv))) | |
0064a8a9 | 8841 | && !IN_BYTES) { |
dfe13c55 | 8842 | eptr = (char*)utf8buf; |
9041c2e3 | 8843 | elen = uvchr_to_utf8((U8*)eptr, uv) - utf8buf; |
2cf2cfc6 | 8844 | is_utf8 = TRUE; |
7e2040f0 GS |
8845 | } |
8846 | else { | |
8847 | c = (char)uv; | |
8848 | eptr = &c; | |
8849 | elen = 1; | |
a0ed51b3 | 8850 | } |
46fc3d4c | 8851 | goto string; |
8852 | ||
46fc3d4c | 8853 | case 's': |
be75b157 | 8854 | if (args && !vectorize) { |
fc36a67e | 8855 | eptr = va_arg(*args, char*); |
c635e13b | 8856 | if (eptr) |
1d7c1841 GS |
8857 | #ifdef MACOS_TRADITIONAL |
8858 | /* On MacOS, %#s format is used for Pascal strings */ | |
8859 | if (alt) | |
8860 | elen = *eptr++; | |
8861 | else | |
8862 | #endif | |
c635e13b | 8863 | elen = strlen(eptr); |
8864 | else { | |
27da23d5 | 8865 | eptr = (char *)nullstr; |
c635e13b | 8866 | elen = sizeof nullstr - 1; |
8867 | } | |
46fc3d4c | 8868 | } |
211dfcf1 | 8869 | else { |
4d84ee25 | 8870 | eptr = SvPVx_const(argsv, elen); |
7e2040f0 | 8871 | if (DO_UTF8(argsv)) { |
a0ed51b3 LW |
8872 | if (has_precis && precis < elen) { |
8873 | I32 p = precis; | |
7e2040f0 | 8874 | sv_pos_u2b(argsv, &p, 0); /* sticks at end */ |
a0ed51b3 LW |
8875 | precis = p; |
8876 | } | |
8877 | if (width) { /* fudge width (can't fudge elen) */ | |
7e2040f0 | 8878 | width += elen - sv_len_utf8(argsv); |
a0ed51b3 | 8879 | } |
2cf2cfc6 | 8880 | is_utf8 = TRUE; |
a0ed51b3 LW |
8881 | } |
8882 | } | |
fc36a67e | 8883 | |
46fc3d4c | 8884 | string: |
b22c7a20 | 8885 | vectorize = FALSE; |
46fc3d4c | 8886 | if (has_precis && elen > precis) |
8887 | elen = precis; | |
8888 | break; | |
8889 | ||
8890 | /* INTEGERS */ | |
8891 | ||
fc36a67e | 8892 | case 'p': |
be75b157 | 8893 | if (alt || vectorize) |
c2e66d9e | 8894 | goto unknown; |
211dfcf1 | 8895 | uv = PTR2UV(args ? va_arg(*args, void*) : argsv); |
fc36a67e | 8896 | base = 16; |
8897 | goto integer; | |
8898 | ||
46fc3d4c | 8899 | case 'D': |
29fe7a80 | 8900 | #ifdef IV_IS_QUAD |
22f3ae8c | 8901 | intsize = 'q'; |
29fe7a80 | 8902 | #else |
46fc3d4c | 8903 | intsize = 'l'; |
29fe7a80 | 8904 | #endif |
46fc3d4c | 8905 | /* FALL THROUGH */ |
8906 | case 'd': | |
8907 | case 'i': | |
8896765a RB |
8908 | #if vdNUMBER |
8909 | format_vd: | |
8910 | #endif | |
b22c7a20 | 8911 | if (vectorize) { |
ba210ebe | 8912 | STRLEN ulen; |
211dfcf1 HS |
8913 | if (!veclen) |
8914 | continue; | |
2cf2cfc6 A |
8915 | if (vec_utf8) |
8916 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
8917 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 8918 | else { |
e83d50c9 | 8919 | uv = *vecstr; |
b22c7a20 GS |
8920 | ulen = 1; |
8921 | } | |
8922 | vecstr += ulen; | |
8923 | veclen -= ulen; | |
e83d50c9 JP |
8924 | if (plus) |
8925 | esignbuf[esignlen++] = plus; | |
b22c7a20 GS |
8926 | } |
8927 | else if (args) { | |
46fc3d4c | 8928 | switch (intsize) { |
8929 | case 'h': iv = (short)va_arg(*args, int); break; | |
46fc3d4c | 8930 | case 'l': iv = va_arg(*args, long); break; |
fc36a67e | 8931 | case 'V': iv = va_arg(*args, IV); break; |
b10c0dba | 8932 | default: iv = va_arg(*args, int); break; |
cf2093f6 JH |
8933 | #ifdef HAS_QUAD |
8934 | case 'q': iv = va_arg(*args, Quad_t); break; | |
8935 | #endif | |
46fc3d4c | 8936 | } |
8937 | } | |
8938 | else { | |
b10c0dba | 8939 | IV tiv = SvIVx(argsv); /* work around GCC bug #13488 */ |
46fc3d4c | 8940 | switch (intsize) { |
b10c0dba MHM |
8941 | case 'h': iv = (short)tiv; break; |
8942 | case 'l': iv = (long)tiv; break; | |
8943 | case 'V': | |
8944 | default: iv = tiv; break; | |
cf2093f6 | 8945 | #ifdef HAS_QUAD |
b10c0dba | 8946 | case 'q': iv = (Quad_t)tiv; break; |
cf2093f6 | 8947 | #endif |
46fc3d4c | 8948 | } |
8949 | } | |
e83d50c9 JP |
8950 | if ( !vectorize ) /* we already set uv above */ |
8951 | { | |
8952 | if (iv >= 0) { | |
8953 | uv = iv; | |
8954 | if (plus) | |
8955 | esignbuf[esignlen++] = plus; | |
8956 | } | |
8957 | else { | |
8958 | uv = -iv; | |
8959 | esignbuf[esignlen++] = '-'; | |
8960 | } | |
46fc3d4c | 8961 | } |
8962 | base = 10; | |
8963 | goto integer; | |
8964 | ||
fc36a67e | 8965 | case 'U': |
29fe7a80 | 8966 | #ifdef IV_IS_QUAD |
22f3ae8c | 8967 | intsize = 'q'; |
29fe7a80 | 8968 | #else |
fc36a67e | 8969 | intsize = 'l'; |
29fe7a80 | 8970 | #endif |
fc36a67e | 8971 | /* FALL THROUGH */ |
8972 | case 'u': | |
8973 | base = 10; | |
8974 | goto uns_integer; | |
8975 | ||
4f19785b WSI |
8976 | case 'b': |
8977 | base = 2; | |
8978 | goto uns_integer; | |
8979 | ||
46fc3d4c | 8980 | case 'O': |
29fe7a80 | 8981 | #ifdef IV_IS_QUAD |
22f3ae8c | 8982 | intsize = 'q'; |
29fe7a80 | 8983 | #else |
46fc3d4c | 8984 | intsize = 'l'; |
29fe7a80 | 8985 | #endif |
46fc3d4c | 8986 | /* FALL THROUGH */ |
8987 | case 'o': | |
8988 | base = 8; | |
8989 | goto uns_integer; | |
8990 | ||
8991 | case 'X': | |
46fc3d4c | 8992 | case 'x': |
8993 | base = 16; | |
46fc3d4c | 8994 | |
8995 | uns_integer: | |
b22c7a20 | 8996 | if (vectorize) { |
ba210ebe | 8997 | STRLEN ulen; |
b22c7a20 | 8998 | vector: |
211dfcf1 HS |
8999 | if (!veclen) |
9000 | continue; | |
2cf2cfc6 A |
9001 | if (vec_utf8) |
9002 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
9003 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 9004 | else { |
a05b299f | 9005 | uv = *vecstr; |
b22c7a20 GS |
9006 | ulen = 1; |
9007 | } | |
9008 | vecstr += ulen; | |
9009 | veclen -= ulen; | |
9010 | } | |
9011 | else if (args) { | |
46fc3d4c | 9012 | switch (intsize) { |
9013 | case 'h': uv = (unsigned short)va_arg(*args, unsigned); break; | |
46fc3d4c | 9014 | case 'l': uv = va_arg(*args, unsigned long); break; |
fc36a67e | 9015 | case 'V': uv = va_arg(*args, UV); break; |
b10c0dba | 9016 | default: uv = va_arg(*args, unsigned); break; |
cf2093f6 | 9017 | #ifdef HAS_QUAD |
9e3321a5 | 9018 | case 'q': uv = va_arg(*args, Uquad_t); break; |
cf2093f6 | 9019 | #endif |
46fc3d4c | 9020 | } |
9021 | } | |
9022 | else { | |
b10c0dba | 9023 | UV tuv = SvUVx(argsv); /* work around GCC bug #13488 */ |
46fc3d4c | 9024 | switch (intsize) { |
b10c0dba MHM |
9025 | case 'h': uv = (unsigned short)tuv; break; |
9026 | case 'l': uv = (unsigned long)tuv; break; | |
9027 | case 'V': | |
9028 | default: uv = tuv; break; | |
cf2093f6 | 9029 | #ifdef HAS_QUAD |
b10c0dba | 9030 | case 'q': uv = (Uquad_t)tuv; break; |
cf2093f6 | 9031 | #endif |
46fc3d4c | 9032 | } |
9033 | } | |
9034 | ||
9035 | integer: | |
4d84ee25 NC |
9036 | { |
9037 | char *ptr = ebuf + sizeof ebuf; | |
9038 | switch (base) { | |
9039 | unsigned dig; | |
9040 | case 16: | |
9041 | if (!uv) | |
9042 | alt = FALSE; | |
9043 | p = (char*)((c == 'X') | |
9044 | ? "0123456789ABCDEF" : "0123456789abcdef"); | |
9045 | do { | |
9046 | dig = uv & 15; | |
9047 | *--ptr = p[dig]; | |
9048 | } while (uv >>= 4); | |
9049 | if (alt) { | |
9050 | esignbuf[esignlen++] = '0'; | |
9051 | esignbuf[esignlen++] = c; /* 'x' or 'X' */ | |
9052 | } | |
9053 | break; | |
9054 | case 8: | |
9055 | do { | |
9056 | dig = uv & 7; | |
9057 | *--ptr = '0' + dig; | |
9058 | } while (uv >>= 3); | |
9059 | if (alt && *ptr != '0') | |
9060 | *--ptr = '0'; | |
9061 | break; | |
9062 | case 2: | |
9063 | do { | |
9064 | dig = uv & 1; | |
9065 | *--ptr = '0' + dig; | |
9066 | } while (uv >>= 1); | |
9067 | if (alt) { | |
9068 | esignbuf[esignlen++] = '0'; | |
9069 | esignbuf[esignlen++] = 'b'; | |
9070 | } | |
9071 | break; | |
9072 | default: /* it had better be ten or less */ | |
9073 | do { | |
9074 | dig = uv % base; | |
9075 | *--ptr = '0' + dig; | |
9076 | } while (uv /= base); | |
9077 | break; | |
46fc3d4c | 9078 | } |
4d84ee25 NC |
9079 | elen = (ebuf + sizeof ebuf) - ptr; |
9080 | eptr = ptr; | |
9081 | if (has_precis) { | |
9082 | if (precis > elen) | |
9083 | zeros = precis - elen; | |
9084 | else if (precis == 0 && elen == 1 && *eptr == '0') | |
9085 | elen = 0; | |
eda88b6d | 9086 | } |
c10ed8b9 | 9087 | } |
46fc3d4c | 9088 | break; |
9089 | ||
9090 | /* FLOATING POINT */ | |
9091 | ||
fc36a67e | 9092 | case 'F': |
9093 | c = 'f'; /* maybe %F isn't supported here */ | |
9094 | /* FALL THROUGH */ | |
46fc3d4c | 9095 | case 'e': case 'E': |
fc36a67e | 9096 | case 'f': |
46fc3d4c | 9097 | case 'g': case 'G': |
9098 | ||
9099 | /* This is evil, but floating point is even more evil */ | |
9100 | ||
9e5b023a JH |
9101 | /* for SV-style calling, we can only get NV |
9102 | for C-style calling, we assume %f is double; | |
9103 | for simplicity we allow any of %Lf, %llf, %qf for long double | |
9104 | */ | |
9105 | switch (intsize) { | |
9106 | case 'V': | |
9107 | #if defined(USE_LONG_DOUBLE) | |
9108 | intsize = 'q'; | |
9109 | #endif | |
9110 | break; | |
8a2e3f14 | 9111 | /* [perl #20339] - we should accept and ignore %lf rather than die */ |
00e17364 HS |
9112 | case 'l': |
9113 | /* FALL THROUGH */ | |
9e5b023a JH |
9114 | default: |
9115 | #if defined(USE_LONG_DOUBLE) | |
9116 | intsize = args ? 0 : 'q'; | |
9117 | #endif | |
9118 | break; | |
9119 | case 'q': | |
9120 | #if defined(HAS_LONG_DOUBLE) | |
9121 | break; | |
9122 | #else | |
9123 | /* FALL THROUGH */ | |
9124 | #endif | |
9125 | case 'h': | |
9e5b023a JH |
9126 | goto unknown; |
9127 | } | |
9128 | ||
9129 | /* now we need (long double) if intsize == 'q', else (double) */ | |
be75b157 | 9130 | nv = (args && !vectorize) ? |
35fff930 JH |
9131 | #if LONG_DOUBLESIZE > DOUBLESIZE |
9132 | intsize == 'q' ? | |
205f51d8 AS |
9133 | va_arg(*args, long double) : |
9134 | va_arg(*args, double) | |
35fff930 | 9135 | #else |
205f51d8 | 9136 | va_arg(*args, double) |
35fff930 | 9137 | #endif |
9e5b023a | 9138 | : SvNVx(argsv); |
fc36a67e | 9139 | |
9140 | need = 0; | |
be75b157 | 9141 | vectorize = FALSE; |
fc36a67e | 9142 | if (c != 'e' && c != 'E') { |
9143 | i = PERL_INT_MIN; | |
9e5b023a JH |
9144 | /* FIXME: if HAS_LONG_DOUBLE but not USE_LONG_DOUBLE this |
9145 | will cast our (long double) to (double) */ | |
73b309ea | 9146 | (void)Perl_frexp(nv, &i); |
fc36a67e | 9147 | if (i == PERL_INT_MIN) |
cea2e8a9 | 9148 | Perl_die(aTHX_ "panic: frexp"); |
c635e13b | 9149 | if (i > 0) |
fc36a67e | 9150 | need = BIT_DIGITS(i); |
9151 | } | |
9152 | need += has_precis ? precis : 6; /* known default */ | |
20f6aaab | 9153 | |
fc36a67e | 9154 | if (need < width) |
9155 | need = width; | |
9156 | ||
20f6aaab AS |
9157 | #ifdef HAS_LDBL_SPRINTF_BUG |
9158 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 AS |
9159 | with sfio - Allen <allens@cpan.org> */ |
9160 | ||
9161 | # ifdef DBL_MAX | |
9162 | # define MY_DBL_MAX DBL_MAX | |
9163 | # else /* XXX guessing! HUGE_VAL may be defined as infinity, so not using */ | |
9164 | # if DOUBLESIZE >= 8 | |
9165 | # define MY_DBL_MAX 1.7976931348623157E+308L | |
9166 | # else | |
9167 | # define MY_DBL_MAX 3.40282347E+38L | |
9168 | # endif | |
9169 | # endif | |
9170 | ||
9171 | # ifdef HAS_LDBL_SPRINTF_BUG_LESS1 /* only between -1L & 1L - Allen */ | |
9172 | # define MY_DBL_MAX_BUG 1L | |
20f6aaab | 9173 | # else |
205f51d8 | 9174 | # define MY_DBL_MAX_BUG MY_DBL_MAX |
20f6aaab | 9175 | # endif |
20f6aaab | 9176 | |
205f51d8 AS |
9177 | # ifdef DBL_MIN |
9178 | # define MY_DBL_MIN DBL_MIN | |
9179 | # else /* XXX guessing! -Allen */ | |
9180 | # if DOUBLESIZE >= 8 | |
9181 | # define MY_DBL_MIN 2.2250738585072014E-308L | |
9182 | # else | |
9183 | # define MY_DBL_MIN 1.17549435E-38L | |
9184 | # endif | |
9185 | # endif | |
20f6aaab | 9186 | |
205f51d8 AS |
9187 | if ((intsize == 'q') && (c == 'f') && |
9188 | ((nv < MY_DBL_MAX_BUG) && (nv > -MY_DBL_MAX_BUG)) && | |
9189 | (need < DBL_DIG)) { | |
9190 | /* it's going to be short enough that | |
9191 | * long double precision is not needed */ | |
9192 | ||
9193 | if ((nv <= 0L) && (nv >= -0L)) | |
9194 | fix_ldbl_sprintf_bug = TRUE; /* 0 is 0 - easiest */ | |
9195 | else { | |
9196 | /* would use Perl_fp_class as a double-check but not | |
9197 | * functional on IRIX - see perl.h comments */ | |
9198 | ||
9199 | if ((nv >= MY_DBL_MIN) || (nv <= -MY_DBL_MIN)) { | |
9200 | /* It's within the range that a double can represent */ | |
9201 | #if defined(DBL_MAX) && !defined(DBL_MIN) | |
9202 | if ((nv >= ((long double)1/DBL_MAX)) || | |
9203 | (nv <= (-(long double)1/DBL_MAX))) | |
20f6aaab | 9204 | #endif |
205f51d8 | 9205 | fix_ldbl_sprintf_bug = TRUE; |
20f6aaab | 9206 | } |
205f51d8 AS |
9207 | } |
9208 | if (fix_ldbl_sprintf_bug == TRUE) { | |
9209 | double temp; | |
9210 | ||
9211 | intsize = 0; | |
9212 | temp = (double)nv; | |
9213 | nv = (NV)temp; | |
9214 | } | |
20f6aaab | 9215 | } |
205f51d8 AS |
9216 | |
9217 | # undef MY_DBL_MAX | |
9218 | # undef MY_DBL_MAX_BUG | |
9219 | # undef MY_DBL_MIN | |
9220 | ||
20f6aaab AS |
9221 | #endif /* HAS_LDBL_SPRINTF_BUG */ |
9222 | ||
46fc3d4c | 9223 | need += 20; /* fudge factor */ |
80252599 GS |
9224 | if (PL_efloatsize < need) { |
9225 | Safefree(PL_efloatbuf); | |
9226 | PL_efloatsize = need + 20; /* more fudge */ | |
a02a5408 | 9227 | Newx(PL_efloatbuf, PL_efloatsize, char); |
7d5ea4e7 | 9228 | PL_efloatbuf[0] = '\0'; |
46fc3d4c | 9229 | } |
9230 | ||
4151a5fe IZ |
9231 | if ( !(width || left || plus || alt) && fill != '0' |
9232 | && has_precis && intsize != 'q' ) { /* Shortcuts */ | |
2873255c NC |
9233 | /* See earlier comment about buggy Gconvert when digits, |
9234 | aka precis is 0 */ | |
9235 | if ( c == 'g' && precis) { | |
2e59c212 | 9236 | Gconvert((NV)nv, (int)precis, 0, PL_efloatbuf); |
4150c189 NC |
9237 | /* May return an empty string for digits==0 */ |
9238 | if (*PL_efloatbuf) { | |
9239 | elen = strlen(PL_efloatbuf); | |
4151a5fe | 9240 | goto float_converted; |
4150c189 | 9241 | } |
4151a5fe IZ |
9242 | } else if ( c == 'f' && !precis) { |
9243 | if ((eptr = F0convert(nv, ebuf + sizeof ebuf, &elen))) | |
9244 | break; | |
9245 | } | |
9246 | } | |
4d84ee25 NC |
9247 | { |
9248 | char *ptr = ebuf + sizeof ebuf; | |
9249 | *--ptr = '\0'; | |
9250 | *--ptr = c; | |
9251 | /* FIXME: what to do if HAS_LONG_DOUBLE but not PERL_PRIfldbl? */ | |
9e5b023a | 9252 | #if defined(HAS_LONG_DOUBLE) && defined(PERL_PRIfldbl) |
4d84ee25 NC |
9253 | if (intsize == 'q') { |
9254 | /* Copy the one or more characters in a long double | |
9255 | * format before the 'base' ([efgEFG]) character to | |
9256 | * the format string. */ | |
9257 | static char const prifldbl[] = PERL_PRIfldbl; | |
9258 | char const *p = prifldbl + sizeof(prifldbl) - 3; | |
9259 | while (p >= prifldbl) { *--ptr = *p--; } | |
9260 | } | |
65202027 | 9261 | #endif |
4d84ee25 NC |
9262 | if (has_precis) { |
9263 | base = precis; | |
9264 | do { *--ptr = '0' + (base % 10); } while (base /= 10); | |
9265 | *--ptr = '.'; | |
9266 | } | |
9267 | if (width) { | |
9268 | base = width; | |
9269 | do { *--ptr = '0' + (base % 10); } while (base /= 10); | |
9270 | } | |
9271 | if (fill == '0') | |
9272 | *--ptr = fill; | |
9273 | if (left) | |
9274 | *--ptr = '-'; | |
9275 | if (plus) | |
9276 | *--ptr = plus; | |
9277 | if (alt) | |
9278 | *--ptr = '#'; | |
9279 | *--ptr = '%'; | |
9280 | ||
9281 | /* No taint. Otherwise we are in the strange situation | |
9282 | * where printf() taints but print($float) doesn't. | |
9283 | * --jhi */ | |
9e5b023a | 9284 | #if defined(HAS_LONG_DOUBLE) |
4150c189 NC |
9285 | elen = ((intsize == 'q') |
9286 | ? my_sprintf(PL_efloatbuf, ptr, nv) | |
9287 | : my_sprintf(PL_efloatbuf, ptr, (double)nv)); | |
9e5b023a | 9288 | #else |
4150c189 | 9289 | elen = my_sprintf(PL_efloatbuf, ptr, nv); |
9e5b023a | 9290 | #endif |
4d84ee25 | 9291 | } |
4151a5fe | 9292 | float_converted: |
80252599 | 9293 | eptr = PL_efloatbuf; |
46fc3d4c | 9294 | break; |
9295 | ||
fc36a67e | 9296 | /* SPECIAL */ |
9297 | ||
9298 | case 'n': | |
9299 | i = SvCUR(sv) - origlen; | |
be75b157 | 9300 | if (args && !vectorize) { |
c635e13b | 9301 | switch (intsize) { |
9302 | case 'h': *(va_arg(*args, short*)) = i; break; | |
9303 | default: *(va_arg(*args, int*)) = i; break; | |
9304 | case 'l': *(va_arg(*args, long*)) = i; break; | |
9305 | case 'V': *(va_arg(*args, IV*)) = i; break; | |
cf2093f6 JH |
9306 | #ifdef HAS_QUAD |
9307 | case 'q': *(va_arg(*args, Quad_t*)) = i; break; | |
9308 | #endif | |
c635e13b | 9309 | } |
fc36a67e | 9310 | } |
9dd79c3f | 9311 | else |
211dfcf1 | 9312 | sv_setuv_mg(argsv, (UV)i); |
be75b157 | 9313 | vectorize = FALSE; |
fc36a67e | 9314 | continue; /* not "break" */ |
9315 | ||
9316 | /* UNKNOWN */ | |
9317 | ||
46fc3d4c | 9318 | default: |
fc36a67e | 9319 | unknown: |
041457d9 DM |
9320 | if (!args |
9321 | && (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF) | |
9322 | && ckWARN(WARN_PRINTF)) | |
9323 | { | |
c4420975 | 9324 | SV * const msg = sv_newmortal(); |
35c1215d NC |
9325 | Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %sprintf: ", |
9326 | (PL_op->op_type == OP_PRTF) ? "" : "s"); | |
0f4b6630 | 9327 | if (c) { |
0f4b6630 | 9328 | if (isPRINT(c)) |
1c846c1f | 9329 | Perl_sv_catpvf(aTHX_ msg, |
0f4b6630 JH |
9330 | "\"%%%c\"", c & 0xFF); |
9331 | else | |
9332 | Perl_sv_catpvf(aTHX_ msg, | |
57def98f | 9333 | "\"%%\\%03"UVof"\"", |
0f4b6630 | 9334 | (UV)c & 0xFF); |
0f4b6630 | 9335 | } else |
c635e13b | 9336 | sv_catpv(msg, "end of string"); |
9014280d | 9337 | Perl_warner(aTHX_ packWARN(WARN_PRINTF), "%"SVf, msg); /* yes, this is reentrant */ |
c635e13b | 9338 | } |
fb73857a | 9339 | |
9340 | /* output mangled stuff ... */ | |
9341 | if (c == '\0') | |
9342 | --q; | |
46fc3d4c | 9343 | eptr = p; |
9344 | elen = q - p; | |
fb73857a | 9345 | |
9346 | /* ... right here, because formatting flags should not apply */ | |
9347 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
9348 | p = SvEND(sv); | |
4459522c | 9349 | Copy(eptr, p, elen, char); |
fb73857a | 9350 | p += elen; |
9351 | *p = '\0'; | |
3f7c398e | 9352 | SvCUR_set(sv, p - SvPVX_const(sv)); |
58e33a90 | 9353 | svix = osvix; |
fb73857a | 9354 | continue; /* not "break" */ |
46fc3d4c | 9355 | } |
9356 | ||
6c94ec8b HS |
9357 | /* calculate width before utf8_upgrade changes it */ |
9358 | have = esignlen + zeros + elen; | |
9359 | ||
d2876be5 JH |
9360 | if (is_utf8 != has_utf8) { |
9361 | if (is_utf8) { | |
9362 | if (SvCUR(sv)) | |
9363 | sv_utf8_upgrade(sv); | |
9364 | } | |
9365 | else { | |
53c1dcc0 | 9366 | SV * const nsv = sv_2mortal(newSVpvn(eptr, elen)); |
d2876be5 | 9367 | sv_utf8_upgrade(nsv); |
93524f2b | 9368 | eptr = SvPVX_const(nsv); |
d2876be5 JH |
9369 | elen = SvCUR(nsv); |
9370 | } | |
9371 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
9372 | p = SvEND(sv); | |
9373 | *p = '\0'; | |
9374 | } | |
6af65485 | 9375 | |
46fc3d4c | 9376 | need = (have > width ? have : width); |
9377 | gap = need - have; | |
9378 | ||
b22c7a20 | 9379 | SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1); |
46fc3d4c | 9380 | p = SvEND(sv); |
9381 | if (esignlen && fill == '0') { | |
53c1dcc0 | 9382 | int i; |
eb160463 | 9383 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 9384 | *p++ = esignbuf[i]; |
9385 | } | |
9386 | if (gap && !left) { | |
9387 | memset(p, fill, gap); | |
9388 | p += gap; | |
9389 | } | |
9390 | if (esignlen && fill != '0') { | |
53c1dcc0 | 9391 | int i; |
eb160463 | 9392 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 9393 | *p++ = esignbuf[i]; |
9394 | } | |
fc36a67e | 9395 | if (zeros) { |
53c1dcc0 | 9396 | int i; |
fc36a67e | 9397 | for (i = zeros; i; i--) |
9398 | *p++ = '0'; | |
9399 | } | |
46fc3d4c | 9400 | if (elen) { |
4459522c | 9401 | Copy(eptr, p, elen, char); |
46fc3d4c | 9402 | p += elen; |
9403 | } | |
9404 | if (gap && left) { | |
9405 | memset(p, ' ', gap); | |
9406 | p += gap; | |
9407 | } | |
b22c7a20 GS |
9408 | if (vectorize) { |
9409 | if (veclen) { | |
4459522c | 9410 | Copy(dotstr, p, dotstrlen, char); |
b22c7a20 GS |
9411 | p += dotstrlen; |
9412 | } | |
9413 | else | |
9414 | vectorize = FALSE; /* done iterating over vecstr */ | |
9415 | } | |
2cf2cfc6 A |
9416 | if (is_utf8) |
9417 | has_utf8 = TRUE; | |
9418 | if (has_utf8) | |
7e2040f0 | 9419 | SvUTF8_on(sv); |
46fc3d4c | 9420 | *p = '\0'; |
3f7c398e | 9421 | SvCUR_set(sv, p - SvPVX_const(sv)); |
b22c7a20 GS |
9422 | if (vectorize) { |
9423 | esignlen = 0; | |
9424 | goto vector; | |
9425 | } | |
46fc3d4c | 9426 | } |
9427 | } | |
51371543 | 9428 | |
645c22ef DM |
9429 | /* ========================================================================= |
9430 | ||
9431 | =head1 Cloning an interpreter | |
9432 | ||
9433 | All the macros and functions in this section are for the private use of | |
9434 | the main function, perl_clone(). | |
9435 | ||
9436 | The foo_dup() functions make an exact copy of an existing foo thinngy. | |
9437 | During the course of a cloning, a hash table is used to map old addresses | |
9438 | to new addresses. The table is created and manipulated with the | |
9439 | ptr_table_* functions. | |
9440 | ||
9441 | =cut | |
9442 | ||
9443 | ============================================================================*/ | |
9444 | ||
9445 | ||
1d7c1841 GS |
9446 | #if defined(USE_ITHREADS) |
9447 | ||
1d7c1841 GS |
9448 | #ifndef GpREFCNT_inc |
9449 | # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL) | |
9450 | #endif | |
9451 | ||
9452 | ||
d2d73c3e AB |
9453 | #define sv_dup_inc(s,t) SvREFCNT_inc(sv_dup(s,t)) |
9454 | #define av_dup(s,t) (AV*)sv_dup((SV*)s,t) | |
9455 | #define av_dup_inc(s,t) (AV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9456 | #define hv_dup(s,t) (HV*)sv_dup((SV*)s,t) | |
9457 | #define hv_dup_inc(s,t) (HV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9458 | #define cv_dup(s,t) (CV*)sv_dup((SV*)s,t) | |
9459 | #define cv_dup_inc(s,t) (CV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9460 | #define io_dup(s,t) (IO*)sv_dup((SV*)s,t) | |
9461 | #define io_dup_inc(s,t) (IO*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9462 | #define gv_dup(s,t) (GV*)sv_dup((SV*)s,t) | |
9463 | #define gv_dup_inc(s,t) (GV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
1d7c1841 GS |
9464 | #define SAVEPV(p) (p ? savepv(p) : Nullch) |
9465 | #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch) | |
8cf8f3d1 | 9466 | |
d2d73c3e | 9467 | |
d2f185dc AMS |
9468 | /* Duplicate a regexp. Required reading: pregcomp() and pregfree() in |
9469 | regcomp.c. AMS 20010712 */ | |
645c22ef | 9470 | |
1d7c1841 | 9471 | REGEXP * |
53c1dcc0 | 9472 | Perl_re_dup(pTHX_ const REGEXP *r, CLONE_PARAMS *param) |
1d7c1841 | 9473 | { |
27da23d5 | 9474 | dVAR; |
d2f185dc AMS |
9475 | REGEXP *ret; |
9476 | int i, len, npar; | |
9477 | struct reg_substr_datum *s; | |
9478 | ||
9479 | if (!r) | |
9480 | return (REGEXP *)NULL; | |
9481 | ||
9482 | if ((ret = (REGEXP *)ptr_table_fetch(PL_ptr_table, r))) | |
9483 | return ret; | |
9484 | ||
9485 | len = r->offsets[0]; | |
9486 | npar = r->nparens+1; | |
9487 | ||
a02a5408 | 9488 | Newxc(ret, sizeof(regexp) + (len+1)*sizeof(regnode), char, regexp); |
d2f185dc AMS |
9489 | Copy(r->program, ret->program, len+1, regnode); |
9490 | ||
a02a5408 | 9491 | Newx(ret->startp, npar, I32); |
d2f185dc | 9492 | Copy(r->startp, ret->startp, npar, I32); |
a02a5408 | 9493 | Newx(ret->endp, npar, I32); |
d2f185dc AMS |
9494 | Copy(r->startp, ret->startp, npar, I32); |
9495 | ||
a02a5408 | 9496 | Newx(ret->substrs, 1, struct reg_substr_data); |
d2f185dc AMS |
9497 | for (s = ret->substrs->data, i = 0; i < 3; i++, s++) { |
9498 | s->min_offset = r->substrs->data[i].min_offset; | |
9499 | s->max_offset = r->substrs->data[i].max_offset; | |
9500 | s->substr = sv_dup_inc(r->substrs->data[i].substr, param); | |
33b8afdf | 9501 | s->utf8_substr = sv_dup_inc(r->substrs->data[i].utf8_substr, param); |
d2f185dc AMS |
9502 | } |
9503 | ||
70612e96 | 9504 | ret->regstclass = NULL; |
d2f185dc AMS |
9505 | if (r->data) { |
9506 | struct reg_data *d; | |
e1ec3a88 | 9507 | const int count = r->data->count; |
53c1dcc0 | 9508 | int i; |
d2f185dc | 9509 | |
a02a5408 | 9510 | Newxc(d, sizeof(struct reg_data) + count*sizeof(void *), |
d2f185dc | 9511 | char, struct reg_data); |
a02a5408 | 9512 | Newx(d->what, count, U8); |
d2f185dc AMS |
9513 | |
9514 | d->count = count; | |
9515 | for (i = 0; i < count; i++) { | |
9516 | d->what[i] = r->data->what[i]; | |
9517 | switch (d->what[i]) { | |
a3621e74 YO |
9518 | /* legal options are one of: sfpont |
9519 | see also regcomp.h and pregfree() */ | |
d2f185dc AMS |
9520 | case 's': |
9521 | d->data[i] = sv_dup_inc((SV *)r->data->data[i], param); | |
9522 | break; | |
9523 | case 'p': | |
9524 | d->data[i] = av_dup_inc((AV *)r->data->data[i], param); | |
9525 | break; | |
9526 | case 'f': | |
9527 | /* This is cheating. */ | |
a02a5408 | 9528 | Newx(d->data[i], 1, struct regnode_charclass_class); |
d2f185dc AMS |
9529 | StructCopy(r->data->data[i], d->data[i], |
9530 | struct regnode_charclass_class); | |
70612e96 | 9531 | ret->regstclass = (regnode*)d->data[i]; |
d2f185dc AMS |
9532 | break; |
9533 | case 'o': | |
33773810 AMS |
9534 | /* Compiled op trees are readonly, and can thus be |
9535 | shared without duplication. */ | |
b34c0dd4 | 9536 | OP_REFCNT_LOCK; |
9b978d73 | 9537 | d->data[i] = (void*)OpREFCNT_inc((OP*)r->data->data[i]); |
b34c0dd4 | 9538 | OP_REFCNT_UNLOCK; |
9b978d73 | 9539 | break; |
d2f185dc AMS |
9540 | case 'n': |
9541 | d->data[i] = r->data->data[i]; | |
9542 | break; | |
a3621e74 YO |
9543 | case 't': |
9544 | d->data[i] = r->data->data[i]; | |
9545 | OP_REFCNT_LOCK; | |
9546 | ((reg_trie_data*)d->data[i])->refcount++; | |
9547 | OP_REFCNT_UNLOCK; | |
9548 | break; | |
9549 | default: | |
9550 | Perl_croak(aTHX_ "panic: re_dup unknown data code '%c'", r->data->what[i]); | |
d2f185dc AMS |
9551 | } |
9552 | } | |
9553 | ||
9554 | ret->data = d; | |
9555 | } | |
9556 | else | |
9557 | ret->data = NULL; | |
9558 | ||
a02a5408 | 9559 | Newx(ret->offsets, 2*len+1, U32); |
d2f185dc AMS |
9560 | Copy(r->offsets, ret->offsets, 2*len+1, U32); |
9561 | ||
e01c5899 | 9562 | ret->precomp = SAVEPVN(r->precomp, r->prelen); |
d2f185dc AMS |
9563 | ret->refcnt = r->refcnt; |
9564 | ret->minlen = r->minlen; | |
9565 | ret->prelen = r->prelen; | |
9566 | ret->nparens = r->nparens; | |
9567 | ret->lastparen = r->lastparen; | |
9568 | ret->lastcloseparen = r->lastcloseparen; | |
9569 | ret->reganch = r->reganch; | |
9570 | ||
70612e96 RG |
9571 | ret->sublen = r->sublen; |
9572 | ||
9573 | if (RX_MATCH_COPIED(ret)) | |
e01c5899 | 9574 | ret->subbeg = SAVEPVN(r->subbeg, r->sublen); |
70612e96 RG |
9575 | else |
9576 | ret->subbeg = Nullch; | |
f8c7b90f | 9577 | #ifdef PERL_OLD_COPY_ON_WRITE |
9a26048b NC |
9578 | ret->saved_copy = Nullsv; |
9579 | #endif | |
70612e96 | 9580 | |
d2f185dc AMS |
9581 | ptr_table_store(PL_ptr_table, r, ret); |
9582 | return ret; | |
1d7c1841 GS |
9583 | } |
9584 | ||
d2d73c3e | 9585 | /* duplicate a file handle */ |
645c22ef | 9586 | |
1d7c1841 | 9587 | PerlIO * |
a8fc9800 | 9588 | Perl_fp_dup(pTHX_ PerlIO *fp, char type, CLONE_PARAMS *param) |
1d7c1841 GS |
9589 | { |
9590 | PerlIO *ret; | |
53c1dcc0 AL |
9591 | |
9592 | PERL_UNUSED_ARG(type); | |
73d840c0 | 9593 | |
1d7c1841 GS |
9594 | if (!fp) |
9595 | return (PerlIO*)NULL; | |
9596 | ||
9597 | /* look for it in the table first */ | |
9598 | ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp); | |
9599 | if (ret) | |
9600 | return ret; | |
9601 | ||
9602 | /* create anew and remember what it is */ | |
ecdeb87c | 9603 | ret = PerlIO_fdupopen(aTHX_ fp, param, PERLIO_DUP_CLONE); |
1d7c1841 GS |
9604 | ptr_table_store(PL_ptr_table, fp, ret); |
9605 | return ret; | |
9606 | } | |
9607 | ||
645c22ef DM |
9608 | /* duplicate a directory handle */ |
9609 | ||
1d7c1841 GS |
9610 | DIR * |
9611 | Perl_dirp_dup(pTHX_ DIR *dp) | |
9612 | { | |
9613 | if (!dp) | |
9614 | return (DIR*)NULL; | |
9615 | /* XXX TODO */ | |
9616 | return dp; | |
9617 | } | |
9618 | ||
ff276b08 | 9619 | /* duplicate a typeglob */ |
645c22ef | 9620 | |
1d7c1841 | 9621 | GP * |
a8fc9800 | 9622 | Perl_gp_dup(pTHX_ GP *gp, CLONE_PARAMS* param) |
1d7c1841 GS |
9623 | { |
9624 | GP *ret; | |
9625 | if (!gp) | |
9626 | return (GP*)NULL; | |
9627 | /* look for it in the table first */ | |
9628 | ret = (GP*)ptr_table_fetch(PL_ptr_table, gp); | |
9629 | if (ret) | |
9630 | return ret; | |
9631 | ||
9632 | /* create anew and remember what it is */ | |
a02a5408 | 9633 | Newxz(ret, 1, GP); |
1d7c1841 GS |
9634 | ptr_table_store(PL_ptr_table, gp, ret); |
9635 | ||
9636 | /* clone */ | |
9637 | ret->gp_refcnt = 0; /* must be before any other dups! */ | |
d2d73c3e AB |
9638 | ret->gp_sv = sv_dup_inc(gp->gp_sv, param); |
9639 | ret->gp_io = io_dup_inc(gp->gp_io, param); | |
9640 | ret->gp_form = cv_dup_inc(gp->gp_form, param); | |
9641 | ret->gp_av = av_dup_inc(gp->gp_av, param); | |
9642 | ret->gp_hv = hv_dup_inc(gp->gp_hv, param); | |
9643 | ret->gp_egv = gv_dup(gp->gp_egv, param);/* GvEGV is not refcounted */ | |
9644 | ret->gp_cv = cv_dup_inc(gp->gp_cv, param); | |
1d7c1841 | 9645 | ret->gp_cvgen = gp->gp_cvgen; |
1d7c1841 GS |
9646 | ret->gp_line = gp->gp_line; |
9647 | ret->gp_file = gp->gp_file; /* points to COP.cop_file */ | |
9648 | return ret; | |
9649 | } | |
9650 | ||
645c22ef DM |
9651 | /* duplicate a chain of magic */ |
9652 | ||
1d7c1841 | 9653 | MAGIC * |
a8fc9800 | 9654 | Perl_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS* param) |
1d7c1841 | 9655 | { |
cb359b41 JH |
9656 | MAGIC *mgprev = (MAGIC*)NULL; |
9657 | MAGIC *mgret; | |
1d7c1841 GS |
9658 | if (!mg) |
9659 | return (MAGIC*)NULL; | |
9660 | /* look for it in the table first */ | |
9661 | mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg); | |
9662 | if (mgret) | |
9663 | return mgret; | |
9664 | ||
9665 | for (; mg; mg = mg->mg_moremagic) { | |
9666 | MAGIC *nmg; | |
a02a5408 | 9667 | Newxz(nmg, 1, MAGIC); |
cb359b41 | 9668 | if (mgprev) |
1d7c1841 | 9669 | mgprev->mg_moremagic = nmg; |
cb359b41 JH |
9670 | else |
9671 | mgret = nmg; | |
1d7c1841 GS |
9672 | nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */ |
9673 | nmg->mg_private = mg->mg_private; | |
9674 | nmg->mg_type = mg->mg_type; | |
9675 | nmg->mg_flags = mg->mg_flags; | |
14befaf4 | 9676 | if (mg->mg_type == PERL_MAGIC_qr) { |
d2f185dc | 9677 | nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj, param); |
1d7c1841 | 9678 | } |
05bd4103 | 9679 | else if(mg->mg_type == PERL_MAGIC_backref) { |
7fc63493 | 9680 | const AV * const av = (AV*) mg->mg_obj; |
fdc9a813 AE |
9681 | SV **svp; |
9682 | I32 i; | |
7fc63493 | 9683 | (void)SvREFCNT_inc(nmg->mg_obj = (SV*)newAV()); |
fdc9a813 AE |
9684 | svp = AvARRAY(av); |
9685 | for (i = AvFILLp(av); i >= 0; i--) { | |
3a81978b | 9686 | if (!svp[i]) continue; |
fdc9a813 AE |
9687 | av_push((AV*)nmg->mg_obj,sv_dup(svp[i],param)); |
9688 | } | |
05bd4103 | 9689 | } |
8d2f4536 NC |
9690 | else if (mg->mg_type == PERL_MAGIC_symtab) { |
9691 | nmg->mg_obj = mg->mg_obj; | |
9692 | } | |
1d7c1841 GS |
9693 | else { |
9694 | nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED) | |
d2d73c3e AB |
9695 | ? sv_dup_inc(mg->mg_obj, param) |
9696 | : sv_dup(mg->mg_obj, param); | |
1d7c1841 GS |
9697 | } |
9698 | nmg->mg_len = mg->mg_len; | |
9699 | nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */ | |
14befaf4 | 9700 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
68795e93 | 9701 | if (mg->mg_len > 0) { |
1d7c1841 | 9702 | nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len); |
14befaf4 DM |
9703 | if (mg->mg_type == PERL_MAGIC_overload_table && |
9704 | AMT_AMAGIC((AMT*)mg->mg_ptr)) | |
9705 | { | |
1d7c1841 GS |
9706 | AMT *amtp = (AMT*)mg->mg_ptr; |
9707 | AMT *namtp = (AMT*)nmg->mg_ptr; | |
9708 | I32 i; | |
9709 | for (i = 1; i < NofAMmeth; i++) { | |
d2d73c3e | 9710 | namtp->table[i] = cv_dup_inc(amtp->table[i], param); |
1d7c1841 GS |
9711 | } |
9712 | } | |
9713 | } | |
9714 | else if (mg->mg_len == HEf_SVKEY) | |
d2d73c3e | 9715 | nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr, param); |
1d7c1841 | 9716 | } |
68795e93 NIS |
9717 | if ((mg->mg_flags & MGf_DUP) && mg->mg_virtual && mg->mg_virtual->svt_dup) { |
9718 | CALL_FPTR(nmg->mg_virtual->svt_dup)(aTHX_ nmg, param); | |
9719 | } | |
1d7c1841 GS |
9720 | mgprev = nmg; |
9721 | } | |
9722 | return mgret; | |
9723 | } | |
9724 | ||
645c22ef DM |
9725 | /* create a new pointer-mapping table */ |
9726 | ||
1d7c1841 GS |
9727 | PTR_TBL_t * |
9728 | Perl_ptr_table_new(pTHX) | |
9729 | { | |
9730 | PTR_TBL_t *tbl; | |
a02a5408 | 9731 | Newxz(tbl, 1, PTR_TBL_t); |
1d7c1841 GS |
9732 | tbl->tbl_max = 511; |
9733 | tbl->tbl_items = 0; | |
a02a5408 | 9734 | Newxz(tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*); |
1d7c1841 GS |
9735 | return tbl; |
9736 | } | |
9737 | ||
134ca3d6 DM |
9738 | #if (PTRSIZE == 8) |
9739 | # define PTR_TABLE_HASH(ptr) (PTR2UV(ptr) >> 3) | |
9740 | #else | |
9741 | # define PTR_TABLE_HASH(ptr) (PTR2UV(ptr) >> 2) | |
9742 | #endif | |
9743 | ||
cb4415b8 | 9744 | #define del_pte(p) del_body_type(p, struct ptr_tbl_ent, pte) |
32e691d0 | 9745 | |
645c22ef DM |
9746 | /* map an existing pointer using a table */ |
9747 | ||
1d7c1841 | 9748 | void * |
53c1dcc0 | 9749 | Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, const void *sv) |
1d7c1841 GS |
9750 | { |
9751 | PTR_TBL_ENT_t *tblent; | |
4373e329 | 9752 | const UV hash = PTR_TABLE_HASH(sv); |
1d7c1841 GS |
9753 | assert(tbl); |
9754 | tblent = tbl->tbl_ary[hash & tbl->tbl_max]; | |
9755 | for (; tblent; tblent = tblent->next) { | |
9756 | if (tblent->oldval == sv) | |
9757 | return tblent->newval; | |
9758 | } | |
9759 | return (void*)NULL; | |
9760 | } | |
9761 | ||
645c22ef DM |
9762 | /* add a new entry to a pointer-mapping table */ |
9763 | ||
1d7c1841 | 9764 | void |
44f8325f | 9765 | Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, const void *oldsv, void *newsv) |
1d7c1841 GS |
9766 | { |
9767 | PTR_TBL_ENT_t *tblent, **otblent; | |
9768 | /* XXX this may be pessimal on platforms where pointers aren't good | |
9769 | * hash values e.g. if they grow faster in the most significant | |
9770 | * bits */ | |
44f8325f | 9771 | const UV hash = PTR_TABLE_HASH(oldsv); |
14cade97 | 9772 | bool empty = 1; |
1d7c1841 GS |
9773 | |
9774 | assert(tbl); | |
9775 | otblent = &tbl->tbl_ary[hash & tbl->tbl_max]; | |
14cade97 | 9776 | for (tblent = *otblent; tblent; empty=0, tblent = tblent->next) { |
44f8325f AL |
9777 | if (tblent->oldval == oldsv) { |
9778 | tblent->newval = newsv; | |
1d7c1841 GS |
9779 | return; |
9780 | } | |
9781 | } | |
08742458 NC |
9782 | new_body_inline(tblent, (void**)&PL_pte_arenaroot, (void**)&PL_pte_root, |
9783 | sizeof(struct ptr_tbl_ent)); | |
44f8325f AL |
9784 | tblent->oldval = oldsv; |
9785 | tblent->newval = newsv; | |
1d7c1841 GS |
9786 | tblent->next = *otblent; |
9787 | *otblent = tblent; | |
9788 | tbl->tbl_items++; | |
14cade97 | 9789 | if (!empty && tbl->tbl_items > tbl->tbl_max) |
1d7c1841 GS |
9790 | ptr_table_split(tbl); |
9791 | } | |
9792 | ||
645c22ef DM |
9793 | /* double the hash bucket size of an existing ptr table */ |
9794 | ||
1d7c1841 GS |
9795 | void |
9796 | Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl) | |
9797 | { | |
9798 | PTR_TBL_ENT_t **ary = tbl->tbl_ary; | |
4373e329 | 9799 | const UV oldsize = tbl->tbl_max + 1; |
1d7c1841 GS |
9800 | UV newsize = oldsize * 2; |
9801 | UV i; | |
9802 | ||
9803 | Renew(ary, newsize, PTR_TBL_ENT_t*); | |
9804 | Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*); | |
9805 | tbl->tbl_max = --newsize; | |
9806 | tbl->tbl_ary = ary; | |
9807 | for (i=0; i < oldsize; i++, ary++) { | |
9808 | PTR_TBL_ENT_t **curentp, **entp, *ent; | |
9809 | if (!*ary) | |
9810 | continue; | |
9811 | curentp = ary + oldsize; | |
9812 | for (entp = ary, ent = *ary; ent; ent = *entp) { | |
134ca3d6 | 9813 | if ((newsize & PTR_TABLE_HASH(ent->oldval)) != i) { |
1d7c1841 GS |
9814 | *entp = ent->next; |
9815 | ent->next = *curentp; | |
9816 | *curentp = ent; | |
9817 | continue; | |
9818 | } | |
9819 | else | |
9820 | entp = &ent->next; | |
9821 | } | |
9822 | } | |
9823 | } | |
9824 | ||
645c22ef DM |
9825 | /* remove all the entries from a ptr table */ |
9826 | ||
a0739874 DM |
9827 | void |
9828 | Perl_ptr_table_clear(pTHX_ PTR_TBL_t *tbl) | |
9829 | { | |
9830 | register PTR_TBL_ENT_t **array; | |
9831 | register PTR_TBL_ENT_t *entry; | |
a0739874 DM |
9832 | UV riter = 0; |
9833 | UV max; | |
9834 | ||
9835 | if (!tbl || !tbl->tbl_items) { | |
9836 | return; | |
9837 | } | |
9838 | ||
9839 | array = tbl->tbl_ary; | |
9840 | entry = array[0]; | |
9841 | max = tbl->tbl_max; | |
9842 | ||
9843 | for (;;) { | |
9844 | if (entry) { | |
4373e329 | 9845 | PTR_TBL_ENT_t *oentry = entry; |
a0739874 | 9846 | entry = entry->next; |
437a6bf1 | 9847 | del_pte(oentry); |
a0739874 DM |
9848 | } |
9849 | if (!entry) { | |
9850 | if (++riter > max) { | |
9851 | break; | |
9852 | } | |
9853 | entry = array[riter]; | |
9854 | } | |
9855 | } | |
9856 | ||
9857 | tbl->tbl_items = 0; | |
9858 | } | |
9859 | ||
645c22ef DM |
9860 | /* clear and free a ptr table */ |
9861 | ||
a0739874 DM |
9862 | void |
9863 | Perl_ptr_table_free(pTHX_ PTR_TBL_t *tbl) | |
9864 | { | |
9865 | if (!tbl) { | |
9866 | return; | |
9867 | } | |
9868 | ptr_table_clear(tbl); | |
9869 | Safefree(tbl->tbl_ary); | |
9870 | Safefree(tbl); | |
9871 | } | |
9872 | ||
5bd07a3d | 9873 | |
83841fad NIS |
9874 | void |
9875 | Perl_rvpv_dup(pTHX_ SV *dstr, SV *sstr, CLONE_PARAMS* param) | |
9876 | { | |
9877 | if (SvROK(sstr)) { | |
b162af07 SP |
9878 | SvRV_set(dstr, SvWEAKREF(sstr) |
9879 | ? sv_dup(SvRV(sstr), param) | |
9880 | : sv_dup_inc(SvRV(sstr), param)); | |
f880fe2f | 9881 | |
83841fad | 9882 | } |
3f7c398e | 9883 | else if (SvPVX_const(sstr)) { |
83841fad NIS |
9884 | /* Has something there */ |
9885 | if (SvLEN(sstr)) { | |
68795e93 | 9886 | /* Normal PV - clone whole allocated space */ |
3f7c398e | 9887 | SvPV_set(dstr, SAVEPVN(SvPVX_const(sstr), SvLEN(sstr)-1)); |
d3d0e6f1 NC |
9888 | if (SvREADONLY(sstr) && SvFAKE(sstr)) { |
9889 | /* Not that normal - actually sstr is copy on write. | |
9890 | But we are a true, independant SV, so: */ | |
9891 | SvREADONLY_off(dstr); | |
9892 | SvFAKE_off(dstr); | |
9893 | } | |
68795e93 | 9894 | } |
83841fad NIS |
9895 | else { |
9896 | /* Special case - not normally malloced for some reason */ | |
ef10be65 NC |
9897 | if ((SvREADONLY(sstr) && SvFAKE(sstr))) { |
9898 | /* A "shared" PV - clone it as "shared" PV */ | |
9899 | SvPV_set(dstr, | |
9900 | HEK_KEY(hek_dup(SvSHARED_HEK_FROM_PV(SvPVX_const(sstr)), | |
9901 | param))); | |
83841fad NIS |
9902 | } |
9903 | else { | |
9904 | /* Some other special case - random pointer */ | |
f880fe2f | 9905 | SvPV_set(dstr, SvPVX(sstr)); |
d3d0e6f1 | 9906 | } |
83841fad NIS |
9907 | } |
9908 | } | |
9909 | else { | |
9910 | /* Copy the Null */ | |
f880fe2f | 9911 | if (SvTYPE(dstr) == SVt_RV) |
b162af07 | 9912 | SvRV_set(dstr, NULL); |
f880fe2f SP |
9913 | else |
9914 | SvPV_set(dstr, 0); | |
83841fad NIS |
9915 | } |
9916 | } | |
9917 | ||
662fb8b2 NC |
9918 | /* duplicate an SV of any type (including AV, HV etc) */ |
9919 | ||
1d7c1841 | 9920 | SV * |
a8fc9800 | 9921 | Perl_sv_dup(pTHX_ SV *sstr, CLONE_PARAMS* param) |
1d7c1841 | 9922 | { |
27da23d5 | 9923 | dVAR; |
1d7c1841 GS |
9924 | SV *dstr; |
9925 | ||
9926 | if (!sstr || SvTYPE(sstr) == SVTYPEMASK) | |
9927 | return Nullsv; | |
9928 | /* look for it in the table first */ | |
9929 | dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr); | |
9930 | if (dstr) | |
9931 | return dstr; | |
9932 | ||
0405e91e AB |
9933 | if(param->flags & CLONEf_JOIN_IN) { |
9934 | /** We are joining here so we don't want do clone | |
9935 | something that is bad **/ | |
bfcb3514 | 9936 | const char *hvname; |
0405e91e AB |
9937 | |
9938 | if(SvTYPE(sstr) == SVt_PVHV && | |
bfcb3514 | 9939 | (hvname = HvNAME_get(sstr))) { |
0405e91e | 9940 | /** don't clone stashes if they already exist **/ |
551405c4 | 9941 | return (SV*)gv_stashpv(hvname,0); |
0405e91e AB |
9942 | } |
9943 | } | |
9944 | ||
1d7c1841 GS |
9945 | /* create anew and remember what it is */ |
9946 | new_SV(dstr); | |
fd0854ff DM |
9947 | |
9948 | #ifdef DEBUG_LEAKING_SCALARS | |
9949 | dstr->sv_debug_optype = sstr->sv_debug_optype; | |
9950 | dstr->sv_debug_line = sstr->sv_debug_line; | |
9951 | dstr->sv_debug_inpad = sstr->sv_debug_inpad; | |
9952 | dstr->sv_debug_cloned = 1; | |
9953 | # ifdef NETWARE | |
9954 | dstr->sv_debug_file = savepv(sstr->sv_debug_file); | |
9955 | # else | |
9956 | dstr->sv_debug_file = savesharedpv(sstr->sv_debug_file); | |
9957 | # endif | |
9958 | #endif | |
9959 | ||
1d7c1841 GS |
9960 | ptr_table_store(PL_ptr_table, sstr, dstr); |
9961 | ||
9962 | /* clone */ | |
9963 | SvFLAGS(dstr) = SvFLAGS(sstr); | |
9964 | SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */ | |
9965 | SvREFCNT(dstr) = 0; /* must be before any other dups! */ | |
9966 | ||
9967 | #ifdef DEBUGGING | |
3f7c398e | 9968 | if (SvANY(sstr) && PL_watch_pvx && SvPVX_const(sstr) == PL_watch_pvx) |
1d7c1841 | 9969 | PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n", |
3f7c398e | 9970 | PL_watch_pvx, SvPVX_const(sstr)); |
1d7c1841 GS |
9971 | #endif |
9972 | ||
9660f481 DM |
9973 | /* don't clone objects whose class has asked us not to */ |
9974 | if (SvOBJECT(sstr) && ! (SvFLAGS(SvSTASH(sstr)) & SVphv_CLONEABLE)) { | |
9975 | SvFLAGS(dstr) &= ~SVTYPEMASK; | |
9976 | SvOBJECT_off(dstr); | |
9977 | return dstr; | |
9978 | } | |
9979 | ||
1d7c1841 GS |
9980 | switch (SvTYPE(sstr)) { |
9981 | case SVt_NULL: | |
9982 | SvANY(dstr) = NULL; | |
9983 | break; | |
9984 | case SVt_IV: | |
339049b0 | 9985 | SvANY(dstr) = (XPVIV*)((char*)&(dstr->sv_u.svu_iv) - STRUCT_OFFSET(XPVIV, xiv_iv)); |
45977657 | 9986 | SvIV_set(dstr, SvIVX(sstr)); |
1d7c1841 GS |
9987 | break; |
9988 | case SVt_NV: | |
9989 | SvANY(dstr) = new_XNV(); | |
9d6ce603 | 9990 | SvNV_set(dstr, SvNVX(sstr)); |
1d7c1841 GS |
9991 | break; |
9992 | case SVt_RV: | |
339049b0 | 9993 | SvANY(dstr) = &(dstr->sv_u.svu_rv); |
83841fad | 9994 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 | 9995 | break; |
662fb8b2 NC |
9996 | default: |
9997 | { | |
9998 | /* These are all the types that need complex bodies allocating. */ | |
9999 | size_t new_body_length; | |
10000 | size_t new_body_offset = 0; | |
10001 | void **new_body_arena; | |
10002 | void **new_body_arenaroot; | |
10003 | void *new_body; | |
10004 | ||
10005 | switch (SvTYPE(sstr)) { | |
10006 | default: | |
10007 | Perl_croak(aTHX_ "Bizarre SvTYPE [%" IVdf "]", | |
10008 | (IV)SvTYPE(sstr)); | |
10009 | break; | |
10010 | ||
10011 | case SVt_PVIO: | |
10012 | new_body = new_XPVIO(); | |
10013 | new_body_length = sizeof(XPVIO); | |
10014 | break; | |
10015 | case SVt_PVFM: | |
10016 | new_body = new_XPVFM(); | |
10017 | new_body_length = sizeof(XPVFM); | |
10018 | break; | |
10019 | ||
10020 | case SVt_PVHV: | |
10021 | new_body_arena = (void **) &PL_xpvhv_root; | |
10022 | new_body_arenaroot = (void **) &PL_xpvhv_arenaroot; | |
10023 | new_body_offset = STRUCT_OFFSET(XPVHV, xhv_fill) | |
10024 | - STRUCT_OFFSET(xpvhv_allocated, xhv_fill); | |
10025 | new_body_length = STRUCT_OFFSET(XPVHV, xmg_stash) | |
10026 | + sizeof (((XPVHV*)SvANY(sstr))->xmg_stash) | |
10027 | - new_body_offset; | |
10028 | goto new_body; | |
10029 | case SVt_PVAV: | |
10030 | new_body_arena = (void **) &PL_xpvav_root; | |
10031 | new_body_arenaroot = (void **) &PL_xpvav_arenaroot; | |
10032 | new_body_offset = STRUCT_OFFSET(XPVAV, xav_fill) | |
10033 | - STRUCT_OFFSET(xpvav_allocated, xav_fill); | |
10034 | new_body_length = STRUCT_OFFSET(XPVHV, xmg_stash) | |
10035 | + sizeof (((XPVHV*)SvANY(sstr))->xmg_stash) | |
10036 | - new_body_offset; | |
10037 | goto new_body; | |
10038 | case SVt_PVBM: | |
10039 | new_body_length = sizeof(XPVBM); | |
10040 | new_body_arena = (void **) &PL_xpvbm_root; | |
10041 | new_body_arenaroot = (void **) &PL_xpvbm_arenaroot; | |
10042 | goto new_body; | |
10043 | case SVt_PVGV: | |
10044 | if (GvUNIQUE((GV*)sstr)) { | |
0abe3f7c | 10045 | /* Do sharing here. */ |
662fb8b2 NC |
10046 | } |
10047 | new_body_length = sizeof(XPVGV); | |
10048 | new_body_arena = (void **) &PL_xpvgv_root; | |
10049 | new_body_arenaroot = (void **) &PL_xpvgv_arenaroot; | |
10050 | goto new_body; | |
10051 | case SVt_PVCV: | |
10052 | new_body_length = sizeof(XPVCV); | |
10053 | new_body_arena = (void **) &PL_xpvcv_root; | |
10054 | new_body_arenaroot = (void **) &PL_xpvcv_arenaroot; | |
10055 | goto new_body; | |
10056 | case SVt_PVLV: | |
10057 | new_body_length = sizeof(XPVLV); | |
10058 | new_body_arena = (void **) &PL_xpvlv_root; | |
10059 | new_body_arenaroot = (void **) &PL_xpvlv_arenaroot; | |
10060 | goto new_body; | |
10061 | case SVt_PVMG: | |
10062 | new_body_length = sizeof(XPVMG); | |
10063 | new_body_arena = (void **) &PL_xpvmg_root; | |
10064 | new_body_arenaroot = (void **) &PL_xpvmg_arenaroot; | |
10065 | goto new_body; | |
10066 | case SVt_PVNV: | |
10067 | new_body_length = sizeof(XPVNV); | |
10068 | new_body_arena = (void **) &PL_xpvnv_root; | |
10069 | new_body_arenaroot = (void **) &PL_xpvnv_arenaroot; | |
10070 | goto new_body; | |
10071 | case SVt_PVIV: | |
10072 | new_body_offset = STRUCT_OFFSET(XPVIV, xpv_cur) | |
10073 | - STRUCT_OFFSET(xpviv_allocated, xpv_cur); | |
10074 | new_body_length = sizeof(XPVIV) - new_body_offset; | |
10075 | new_body_arena = (void **) &PL_xpviv_root; | |
10076 | new_body_arenaroot = (void **) &PL_xpviv_arenaroot; | |
10077 | goto new_body; | |
10078 | case SVt_PV: | |
10079 | new_body_offset = STRUCT_OFFSET(XPV, xpv_cur) | |
10080 | - STRUCT_OFFSET(xpv_allocated, xpv_cur); | |
10081 | new_body_length = sizeof(XPV) - new_body_offset; | |
10082 | new_body_arena = (void **) &PL_xpv_root; | |
10083 | new_body_arenaroot = (void **) &PL_xpv_arenaroot; | |
10084 | new_body: | |
10085 | assert(new_body_length); | |
10086 | #ifndef PURIFY | |
08742458 NC |
10087 | new_body_inline(new_body, new_body_arenaroot, new_body_arena, |
10088 | new_body_length); | |
10089 | new_body = (void*)((char*)new_body - new_body_offset); | |
662fb8b2 NC |
10090 | #else |
10091 | /* We always allocated the full length item with PURIFY */ | |
10092 | new_body_length += new_body_offset; | |
10093 | new_body_offset = 0; | |
10094 | new_body = my_safemalloc(new_body_length); | |
5bd07a3d | 10095 | #endif |
1d7c1841 | 10096 | } |
662fb8b2 NC |
10097 | assert(new_body); |
10098 | SvANY(dstr) = new_body; | |
10099 | ||
10100 | Copy(((char*)SvANY(sstr)) + new_body_offset, | |
10101 | ((char*)SvANY(dstr)) + new_body_offset, | |
10102 | new_body_length, char); | |
10103 | ||
10104 | if (SvTYPE(sstr) != SVt_PVAV && SvTYPE(sstr) != SVt_PVHV) | |
10105 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); | |
10106 | ||
10107 | /* The Copy above means that all the source (unduplicated) pointers | |
10108 | are now in the destination. We can check the flags and the | |
10109 | pointers in either, but it's possible that there's less cache | |
10110 | missing by always going for the destination. | |
10111 | FIXME - instrument and check that assumption */ | |
10112 | if (SvTYPE(sstr) >= SVt_PVMG) { | |
10113 | if (SvMAGIC(dstr)) | |
10114 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(dstr), param)); | |
10115 | if (SvSTASH(dstr)) | |
10116 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(dstr), param)); | |
1d7c1841 | 10117 | } |
662fb8b2 NC |
10118 | |
10119 | switch (SvTYPE(sstr)) { | |
10120 | case SVt_PV: | |
10121 | break; | |
10122 | case SVt_PVIV: | |
10123 | break; | |
10124 | case SVt_PVNV: | |
10125 | break; | |
10126 | case SVt_PVMG: | |
10127 | break; | |
10128 | case SVt_PVBM: | |
10129 | break; | |
10130 | case SVt_PVLV: | |
10131 | /* XXX LvTARGOFF sometimes holds PMOP* when DEBUGGING */ | |
10132 | if (LvTYPE(dstr) == 't') /* for tie: unrefcnted fake (SV**) */ | |
10133 | LvTARG(dstr) = dstr; | |
10134 | else if (LvTYPE(dstr) == 'T') /* for tie: fake HE */ | |
10135 | LvTARG(dstr) = (SV*)he_dup((HE*)LvTARG(dstr), 0, param); | |
10136 | else | |
10137 | LvTARG(dstr) = sv_dup_inc(LvTARG(dstr), param); | |
10138 | break; | |
10139 | case SVt_PVGV: | |
10140 | GvNAME(dstr) = SAVEPVN(GvNAME(dstr), GvNAMELEN(dstr)); | |
e15faf7d NC |
10141 | GvSTASH(dstr) = hv_dup(GvSTASH(dstr), param); |
10142 | /* Don't call sv_add_backref here as it's going to be created | |
10143 | as part of the magic cloning of the symbol table. */ | |
662fb8b2 NC |
10144 | GvGP(dstr) = gp_dup(GvGP(dstr), param); |
10145 | (void)GpREFCNT_inc(GvGP(dstr)); | |
10146 | break; | |
10147 | case SVt_PVIO: | |
10148 | IoIFP(dstr) = fp_dup(IoIFP(dstr), IoTYPE(dstr), param); | |
10149 | if (IoOFP(dstr) == IoIFP(sstr)) | |
10150 | IoOFP(dstr) = IoIFP(dstr); | |
10151 | else | |
10152 | IoOFP(dstr) = fp_dup(IoOFP(dstr), IoTYPE(dstr), param); | |
10153 | /* PL_rsfp_filters entries have fake IoDIRP() */ | |
10154 | if (IoDIRP(dstr) && !(IoFLAGS(dstr) & IOf_FAKE_DIRP)) | |
10155 | IoDIRP(dstr) = dirp_dup(IoDIRP(dstr)); | |
10156 | if(IoFLAGS(dstr) & IOf_FAKE_DIRP) { | |
10157 | /* I have no idea why fake dirp (rsfps) | |
10158 | should be treated differently but otherwise | |
10159 | we end up with leaks -- sky*/ | |
10160 | IoTOP_GV(dstr) = gv_dup_inc(IoTOP_GV(dstr), param); | |
10161 | IoFMT_GV(dstr) = gv_dup_inc(IoFMT_GV(dstr), param); | |
10162 | IoBOTTOM_GV(dstr) = gv_dup_inc(IoBOTTOM_GV(dstr), param); | |
10163 | } else { | |
10164 | IoTOP_GV(dstr) = gv_dup(IoTOP_GV(dstr), param); | |
10165 | IoFMT_GV(dstr) = gv_dup(IoFMT_GV(dstr), param); | |
10166 | IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(dstr), param); | |
10167 | } | |
10168 | IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(dstr)); | |
10169 | IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(dstr)); | |
10170 | IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(dstr)); | |
10171 | break; | |
10172 | case SVt_PVAV: | |
10173 | if (AvARRAY((AV*)sstr)) { | |
10174 | SV **dst_ary, **src_ary; | |
10175 | SSize_t items = AvFILLp((AV*)sstr) + 1; | |
10176 | ||
10177 | src_ary = AvARRAY((AV*)sstr); | |
a02a5408 | 10178 | Newxz(dst_ary, AvMAX((AV*)sstr)+1, SV*); |
662fb8b2 NC |
10179 | ptr_table_store(PL_ptr_table, src_ary, dst_ary); |
10180 | SvPV_set(dstr, (char*)dst_ary); | |
10181 | AvALLOC((AV*)dstr) = dst_ary; | |
10182 | if (AvREAL((AV*)sstr)) { | |
10183 | while (items-- > 0) | |
10184 | *dst_ary++ = sv_dup_inc(*src_ary++, param); | |
10185 | } | |
10186 | else { | |
10187 | while (items-- > 0) | |
10188 | *dst_ary++ = sv_dup(*src_ary++, param); | |
10189 | } | |
10190 | items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr); | |
10191 | while (items-- > 0) { | |
10192 | *dst_ary++ = &PL_sv_undef; | |
10193 | } | |
bfcb3514 | 10194 | } |
662fb8b2 NC |
10195 | else { |
10196 | SvPV_set(dstr, Nullch); | |
10197 | AvALLOC((AV*)dstr) = (SV**)NULL; | |
b79f7545 | 10198 | } |
662fb8b2 NC |
10199 | break; |
10200 | case SVt_PVHV: | |
10201 | { | |
10202 | HEK *hvname = 0; | |
10203 | ||
10204 | if (HvARRAY((HV*)sstr)) { | |
10205 | STRLEN i = 0; | |
10206 | const bool sharekeys = !!HvSHAREKEYS(sstr); | |
10207 | XPVHV * const dxhv = (XPVHV*)SvANY(dstr); | |
10208 | XPVHV * const sxhv = (XPVHV*)SvANY(sstr); | |
10209 | char *darray; | |
a02a5408 | 10210 | Newx(darray, PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1) |
662fb8b2 NC |
10211 | + (SvOOK(sstr) ? sizeof(struct xpvhv_aux) : 0), |
10212 | char); | |
10213 | HvARRAY(dstr) = (HE**)darray; | |
10214 | while (i <= sxhv->xhv_max) { | |
5c4138a0 | 10215 | const HE *source = HvARRAY(sstr)[i]; |
662fb8b2 NC |
10216 | HvARRAY(dstr)[i] = source |
10217 | ? he_dup(source, sharekeys, param) : 0; | |
10218 | ++i; | |
10219 | } | |
10220 | if (SvOOK(sstr)) { | |
10221 | struct xpvhv_aux *saux = HvAUX(sstr); | |
10222 | struct xpvhv_aux *daux = HvAUX(dstr); | |
10223 | /* This flag isn't copied. */ | |
10224 | /* SvOOK_on(hv) attacks the IV flags. */ | |
10225 | SvFLAGS(dstr) |= SVf_OOK; | |
10226 | ||
10227 | hvname = saux->xhv_name; | |
dd690478 NC |
10228 | daux->xhv_name |
10229 | = hvname ? hek_dup(hvname, param) : hvname; | |
662fb8b2 NC |
10230 | |
10231 | daux->xhv_riter = saux->xhv_riter; | |
10232 | daux->xhv_eiter = saux->xhv_eiter | |
dd690478 NC |
10233 | ? he_dup(saux->xhv_eiter, |
10234 | (bool)!!HvSHAREKEYS(sstr), param) : 0; | |
662fb8b2 NC |
10235 | } |
10236 | } | |
10237 | else { | |
10238 | SvPV_set(dstr, Nullch); | |
10239 | } | |
10240 | /* Record stashes for possible cloning in Perl_clone(). */ | |
10241 | if(hvname) | |
10242 | av_push(param->stashes, dstr); | |
10243 | } | |
10244 | break; | |
10245 | case SVt_PVFM: | |
10246 | case SVt_PVCV: | |
10247 | /* NOTE: not refcounted */ | |
10248 | CvSTASH(dstr) = hv_dup(CvSTASH(dstr), param); | |
10249 | OP_REFCNT_LOCK; | |
10250 | CvROOT(dstr) = OpREFCNT_inc(CvROOT(dstr)); | |
10251 | OP_REFCNT_UNLOCK; | |
10252 | if (CvCONST(dstr)) { | |
10253 | CvXSUBANY(dstr).any_ptr = GvUNIQUE(CvGV(dstr)) ? | |
10254 | SvREFCNT_inc(CvXSUBANY(dstr).any_ptr) : | |
10255 | sv_dup_inc((SV *)CvXSUBANY(dstr).any_ptr, param); | |
10256 | } | |
10257 | /* don't dup if copying back - CvGV isn't refcounted, so the | |
10258 | * duped GV may never be freed. A bit of a hack! DAPM */ | |
10259 | CvGV(dstr) = (param->flags & CLONEf_JOIN_IN) ? | |
10260 | Nullgv : gv_dup(CvGV(dstr), param) ; | |
10261 | if (!(param->flags & CLONEf_COPY_STACKS)) { | |
10262 | CvDEPTH(dstr) = 0; | |
10263 | } | |
10264 | PAD_DUP(CvPADLIST(dstr), CvPADLIST(sstr), param); | |
10265 | CvOUTSIDE(dstr) = | |
10266 | CvWEAKOUTSIDE(sstr) | |
10267 | ? cv_dup( CvOUTSIDE(dstr), param) | |
10268 | : cv_dup_inc(CvOUTSIDE(dstr), param); | |
10269 | if (!CvXSUB(dstr)) | |
10270 | CvFILE(dstr) = SAVEPV(CvFILE(dstr)); | |
10271 | break; | |
bfcb3514 | 10272 | } |
1d7c1841 | 10273 | } |
1d7c1841 GS |
10274 | } |
10275 | ||
10276 | if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO) | |
10277 | ++PL_sv_objcount; | |
10278 | ||
10279 | return dstr; | |
d2d73c3e | 10280 | } |
1d7c1841 | 10281 | |
645c22ef DM |
10282 | /* duplicate a context */ |
10283 | ||
1d7c1841 | 10284 | PERL_CONTEXT * |
a8fc9800 | 10285 | Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max, CLONE_PARAMS* param) |
1d7c1841 GS |
10286 | { |
10287 | PERL_CONTEXT *ncxs; | |
10288 | ||
10289 | if (!cxs) | |
10290 | return (PERL_CONTEXT*)NULL; | |
10291 | ||
10292 | /* look for it in the table first */ | |
10293 | ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs); | |
10294 | if (ncxs) | |
10295 | return ncxs; | |
10296 | ||
10297 | /* create anew and remember what it is */ | |
a02a5408 | 10298 | Newxz(ncxs, max + 1, PERL_CONTEXT); |
1d7c1841 GS |
10299 | ptr_table_store(PL_ptr_table, cxs, ncxs); |
10300 | ||
10301 | while (ix >= 0) { | |
10302 | PERL_CONTEXT *cx = &cxs[ix]; | |
10303 | PERL_CONTEXT *ncx = &ncxs[ix]; | |
10304 | ncx->cx_type = cx->cx_type; | |
10305 | if (CxTYPE(cx) == CXt_SUBST) { | |
10306 | Perl_croak(aTHX_ "Cloning substitution context is unimplemented"); | |
10307 | } | |
10308 | else { | |
10309 | ncx->blk_oldsp = cx->blk_oldsp; | |
10310 | ncx->blk_oldcop = cx->blk_oldcop; | |
1d7c1841 GS |
10311 | ncx->blk_oldmarksp = cx->blk_oldmarksp; |
10312 | ncx->blk_oldscopesp = cx->blk_oldscopesp; | |
10313 | ncx->blk_oldpm = cx->blk_oldpm; | |
10314 | ncx->blk_gimme = cx->blk_gimme; | |
10315 | switch (CxTYPE(cx)) { | |
10316 | case CXt_SUB: | |
10317 | ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0 | |
d2d73c3e AB |
10318 | ? cv_dup_inc(cx->blk_sub.cv, param) |
10319 | : cv_dup(cx->blk_sub.cv,param)); | |
1d7c1841 | 10320 | ncx->blk_sub.argarray = (cx->blk_sub.hasargs |
d2d73c3e | 10321 | ? av_dup_inc(cx->blk_sub.argarray, param) |
1d7c1841 | 10322 | : Nullav); |
d2d73c3e | 10323 | ncx->blk_sub.savearray = av_dup_inc(cx->blk_sub.savearray, param); |
1d7c1841 GS |
10324 | ncx->blk_sub.olddepth = cx->blk_sub.olddepth; |
10325 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; | |
10326 | ncx->blk_sub.lval = cx->blk_sub.lval; | |
f39bc417 | 10327 | ncx->blk_sub.retop = cx->blk_sub.retop; |
1d7c1841 GS |
10328 | break; |
10329 | case CXt_EVAL: | |
10330 | ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval; | |
10331 | ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type; | |
b47cad08 | 10332 | ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv, param); |
1d7c1841 | 10333 | ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root; |
d2d73c3e | 10334 | ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text, param); |
f39bc417 | 10335 | ncx->blk_eval.retop = cx->blk_eval.retop; |
1d7c1841 GS |
10336 | break; |
10337 | case CXt_LOOP: | |
10338 | ncx->blk_loop.label = cx->blk_loop.label; | |
10339 | ncx->blk_loop.resetsp = cx->blk_loop.resetsp; | |
10340 | ncx->blk_loop.redo_op = cx->blk_loop.redo_op; | |
10341 | ncx->blk_loop.next_op = cx->blk_loop.next_op; | |
10342 | ncx->blk_loop.last_op = cx->blk_loop.last_op; | |
10343 | ncx->blk_loop.iterdata = (CxPADLOOP(cx) | |
10344 | ? cx->blk_loop.iterdata | |
d2d73c3e | 10345 | : gv_dup((GV*)cx->blk_loop.iterdata, param)); |
f3548bdc DM |
10346 | ncx->blk_loop.oldcomppad |
10347 | = (PAD*)ptr_table_fetch(PL_ptr_table, | |
10348 | cx->blk_loop.oldcomppad); | |
d2d73c3e AB |
10349 | ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave, param); |
10350 | ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval, param); | |
10351 | ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary, param); | |
1d7c1841 GS |
10352 | ncx->blk_loop.iterix = cx->blk_loop.iterix; |
10353 | ncx->blk_loop.itermax = cx->blk_loop.itermax; | |
10354 | break; | |
10355 | case CXt_FORMAT: | |
d2d73c3e AB |
10356 | ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv, param); |
10357 | ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv, param); | |
10358 | ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv, param); | |
1d7c1841 | 10359 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; |
f39bc417 | 10360 | ncx->blk_sub.retop = cx->blk_sub.retop; |
1d7c1841 GS |
10361 | break; |
10362 | case CXt_BLOCK: | |
10363 | case CXt_NULL: | |
10364 | break; | |
10365 | } | |
10366 | } | |
10367 | --ix; | |
10368 | } | |
10369 | return ncxs; | |
10370 | } | |
10371 | ||
645c22ef DM |
10372 | /* duplicate a stack info structure */ |
10373 | ||
1d7c1841 | 10374 | PERL_SI * |
a8fc9800 | 10375 | Perl_si_dup(pTHX_ PERL_SI *si, CLONE_PARAMS* param) |
1d7c1841 GS |
10376 | { |
10377 | PERL_SI *nsi; | |
10378 | ||
10379 | if (!si) | |
10380 | return (PERL_SI*)NULL; | |
10381 | ||
10382 | /* look for it in the table first */ | |
10383 | nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si); | |
10384 | if (nsi) | |
10385 | return nsi; | |
10386 | ||
10387 | /* create anew and remember what it is */ | |
a02a5408 | 10388 | Newxz(nsi, 1, PERL_SI); |
1d7c1841 GS |
10389 | ptr_table_store(PL_ptr_table, si, nsi); |
10390 | ||
d2d73c3e | 10391 | nsi->si_stack = av_dup_inc(si->si_stack, param); |
1d7c1841 GS |
10392 | nsi->si_cxix = si->si_cxix; |
10393 | nsi->si_cxmax = si->si_cxmax; | |
d2d73c3e | 10394 | nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax, param); |
1d7c1841 | 10395 | nsi->si_type = si->si_type; |
d2d73c3e AB |
10396 | nsi->si_prev = si_dup(si->si_prev, param); |
10397 | nsi->si_next = si_dup(si->si_next, param); | |
1d7c1841 GS |
10398 | nsi->si_markoff = si->si_markoff; |
10399 | ||
10400 | return nsi; | |
10401 | } | |
10402 | ||
10403 | #define POPINT(ss,ix) ((ss)[--(ix)].any_i32) | |
10404 | #define TOPINT(ss,ix) ((ss)[ix].any_i32) | |
10405 | #define POPLONG(ss,ix) ((ss)[--(ix)].any_long) | |
10406 | #define TOPLONG(ss,ix) ((ss)[ix].any_long) | |
10407 | #define POPIV(ss,ix) ((ss)[--(ix)].any_iv) | |
10408 | #define TOPIV(ss,ix) ((ss)[ix].any_iv) | |
38d8b13e HS |
10409 | #define POPBOOL(ss,ix) ((ss)[--(ix)].any_bool) |
10410 | #define TOPBOOL(ss,ix) ((ss)[ix].any_bool) | |
1d7c1841 GS |
10411 | #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr) |
10412 | #define TOPPTR(ss,ix) ((ss)[ix].any_ptr) | |
10413 | #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr) | |
10414 | #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr) | |
10415 | #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr) | |
10416 | #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr) | |
10417 | ||
10418 | /* XXXXX todo */ | |
10419 | #define pv_dup_inc(p) SAVEPV(p) | |
10420 | #define pv_dup(p) SAVEPV(p) | |
10421 | #define svp_dup_inc(p,pp) any_dup(p,pp) | |
10422 | ||
645c22ef DM |
10423 | /* map any object to the new equivent - either something in the |
10424 | * ptr table, or something in the interpreter structure | |
10425 | */ | |
10426 | ||
1d7c1841 | 10427 | void * |
53c1dcc0 | 10428 | Perl_any_dup(pTHX_ void *v, const PerlInterpreter *proto_perl) |
1d7c1841 GS |
10429 | { |
10430 | void *ret; | |
10431 | ||
10432 | if (!v) | |
10433 | return (void*)NULL; | |
10434 | ||
10435 | /* look for it in the table first */ | |
10436 | ret = ptr_table_fetch(PL_ptr_table, v); | |
10437 | if (ret) | |
10438 | return ret; | |
10439 | ||
10440 | /* see if it is part of the interpreter structure */ | |
10441 | if (v >= (void*)proto_perl && v < (void*)(proto_perl+1)) | |
acfe0abc | 10442 | ret = (void*)(((char*)aTHX) + (((char*)v) - (char*)proto_perl)); |
05ec9bb3 | 10443 | else { |
1d7c1841 | 10444 | ret = v; |
05ec9bb3 | 10445 | } |
1d7c1841 GS |
10446 | |
10447 | return ret; | |
10448 | } | |
10449 | ||
645c22ef DM |
10450 | /* duplicate the save stack */ |
10451 | ||
1d7c1841 | 10452 | ANY * |
a8fc9800 | 10453 | Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl, CLONE_PARAMS* param) |
1d7c1841 | 10454 | { |
53c1dcc0 AL |
10455 | ANY * const ss = proto_perl->Tsavestack; |
10456 | const I32 max = proto_perl->Tsavestack_max; | |
10457 | I32 ix = proto_perl->Tsavestack_ix; | |
1d7c1841 GS |
10458 | ANY *nss; |
10459 | SV *sv; | |
10460 | GV *gv; | |
10461 | AV *av; | |
10462 | HV *hv; | |
10463 | void* ptr; | |
10464 | int intval; | |
10465 | long longval; | |
10466 | GP *gp; | |
10467 | IV iv; | |
c4e33207 | 10468 | char *c = NULL; |
1d7c1841 | 10469 | void (*dptr) (void*); |
acfe0abc | 10470 | void (*dxptr) (pTHX_ void*); |
1d7c1841 | 10471 | |
a02a5408 | 10472 | Newxz(nss, max, ANY); |
1d7c1841 GS |
10473 | |
10474 | while (ix > 0) { | |
b464bac0 | 10475 | I32 i = POPINT(ss,ix); |
1d7c1841 GS |
10476 | TOPINT(nss,ix) = i; |
10477 | switch (i) { | |
10478 | case SAVEt_ITEM: /* normal string */ | |
10479 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10480 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 10481 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 10482 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
10483 | break; |
10484 | case SAVEt_SV: /* scalar reference */ | |
10485 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10486 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 10487 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 10488 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 | 10489 | break; |
f4dd75d9 GS |
10490 | case SAVEt_GENERIC_PVREF: /* generic char* */ |
10491 | c = (char*)POPPTR(ss,ix); | |
10492 | TOPPTR(nss,ix) = pv_dup(c); | |
10493 | ptr = POPPTR(ss,ix); | |
10494 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10495 | break; | |
05ec9bb3 NIS |
10496 | case SAVEt_SHARED_PVREF: /* char* in shared space */ |
10497 | c = (char*)POPPTR(ss,ix); | |
10498 | TOPPTR(nss,ix) = savesharedpv(c); | |
10499 | ptr = POPPTR(ss,ix); | |
10500 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10501 | break; | |
1d7c1841 GS |
10502 | case SAVEt_GENERIC_SVREF: /* generic sv */ |
10503 | case SAVEt_SVREF: /* scalar reference */ | |
10504 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10505 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
10506 | ptr = POPPTR(ss,ix); |
10507 | TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */ | |
10508 | break; | |
10509 | case SAVEt_AV: /* array reference */ | |
10510 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 10511 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 | 10512 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 10513 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
10514 | break; |
10515 | case SAVEt_HV: /* hash reference */ | |
10516 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 10517 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 | 10518 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 10519 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
10520 | break; |
10521 | case SAVEt_INT: /* int reference */ | |
10522 | ptr = POPPTR(ss,ix); | |
10523 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10524 | intval = (int)POPINT(ss,ix); | |
10525 | TOPINT(nss,ix) = intval; | |
10526 | break; | |
10527 | case SAVEt_LONG: /* long reference */ | |
10528 | ptr = POPPTR(ss,ix); | |
10529 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10530 | longval = (long)POPLONG(ss,ix); | |
10531 | TOPLONG(nss,ix) = longval; | |
10532 | break; | |
10533 | case SAVEt_I32: /* I32 reference */ | |
10534 | case SAVEt_I16: /* I16 reference */ | |
10535 | case SAVEt_I8: /* I8 reference */ | |
10536 | ptr = POPPTR(ss,ix); | |
10537 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10538 | i = POPINT(ss,ix); | |
10539 | TOPINT(nss,ix) = i; | |
10540 | break; | |
10541 | case SAVEt_IV: /* IV reference */ | |
10542 | ptr = POPPTR(ss,ix); | |
10543 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10544 | iv = POPIV(ss,ix); | |
10545 | TOPIV(nss,ix) = iv; | |
10546 | break; | |
10547 | case SAVEt_SPTR: /* SV* reference */ | |
10548 | ptr = POPPTR(ss,ix); | |
10549 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10550 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10551 | TOPPTR(nss,ix) = sv_dup(sv, param); |
1d7c1841 GS |
10552 | break; |
10553 | case SAVEt_VPTR: /* random* reference */ | |
10554 | ptr = POPPTR(ss,ix); | |
10555 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10556 | ptr = POPPTR(ss,ix); | |
10557 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10558 | break; | |
10559 | case SAVEt_PPTR: /* char* reference */ | |
10560 | ptr = POPPTR(ss,ix); | |
10561 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10562 | c = (char*)POPPTR(ss,ix); | |
10563 | TOPPTR(nss,ix) = pv_dup(c); | |
10564 | break; | |
10565 | case SAVEt_HPTR: /* HV* reference */ | |
10566 | ptr = POPPTR(ss,ix); | |
10567 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10568 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 10569 | TOPPTR(nss,ix) = hv_dup(hv, param); |
1d7c1841 GS |
10570 | break; |
10571 | case SAVEt_APTR: /* AV* reference */ | |
10572 | ptr = POPPTR(ss,ix); | |
10573 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10574 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 10575 | TOPPTR(nss,ix) = av_dup(av, param); |
1d7c1841 GS |
10576 | break; |
10577 | case SAVEt_NSTAB: | |
10578 | gv = (GV*)POPPTR(ss,ix); | |
d2d73c3e | 10579 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
10580 | break; |
10581 | case SAVEt_GP: /* scalar reference */ | |
10582 | gp = (GP*)POPPTR(ss,ix); | |
d2d73c3e | 10583 | TOPPTR(nss,ix) = gp = gp_dup(gp, param); |
1d7c1841 GS |
10584 | (void)GpREFCNT_inc(gp); |
10585 | gv = (GV*)POPPTR(ss,ix); | |
2ed3c8fc | 10586 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 GS |
10587 | c = (char*)POPPTR(ss,ix); |
10588 | TOPPTR(nss,ix) = pv_dup(c); | |
10589 | iv = POPIV(ss,ix); | |
10590 | TOPIV(nss,ix) = iv; | |
10591 | iv = POPIV(ss,ix); | |
10592 | TOPIV(nss,ix) = iv; | |
10593 | break; | |
10594 | case SAVEt_FREESV: | |
26d9b02f | 10595 | case SAVEt_MORTALIZESV: |
1d7c1841 | 10596 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 10597 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
10598 | break; |
10599 | case SAVEt_FREEOP: | |
10600 | ptr = POPPTR(ss,ix); | |
10601 | if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) { | |
10602 | /* these are assumed to be refcounted properly */ | |
53c1dcc0 | 10603 | OP *o; |
1d7c1841 GS |
10604 | switch (((OP*)ptr)->op_type) { |
10605 | case OP_LEAVESUB: | |
10606 | case OP_LEAVESUBLV: | |
10607 | case OP_LEAVEEVAL: | |
10608 | case OP_LEAVE: | |
10609 | case OP_SCOPE: | |
10610 | case OP_LEAVEWRITE: | |
e977893f GS |
10611 | TOPPTR(nss,ix) = ptr; |
10612 | o = (OP*)ptr; | |
10613 | OpREFCNT_inc(o); | |
1d7c1841 GS |
10614 | break; |
10615 | default: | |
10616 | TOPPTR(nss,ix) = Nullop; | |
10617 | break; | |
10618 | } | |
10619 | } | |
10620 | else | |
10621 | TOPPTR(nss,ix) = Nullop; | |
10622 | break; | |
10623 | case SAVEt_FREEPV: | |
10624 | c = (char*)POPPTR(ss,ix); | |
10625 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
10626 | break; | |
10627 | case SAVEt_CLEARSV: | |
10628 | longval = POPLONG(ss,ix); | |
10629 | TOPLONG(nss,ix) = longval; | |
10630 | break; | |
10631 | case SAVEt_DELETE: | |
10632 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 10633 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
10634 | c = (char*)POPPTR(ss,ix); |
10635 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
10636 | i = POPINT(ss,ix); | |
10637 | TOPINT(nss,ix) = i; | |
10638 | break; | |
10639 | case SAVEt_DESTRUCTOR: | |
10640 | ptr = POPPTR(ss,ix); | |
10641 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
10642 | dptr = POPDPTR(ss,ix); | |
8141890a JH |
10643 | TOPDPTR(nss,ix) = DPTR2FPTR(void (*)(void*), |
10644 | any_dup(FPTR2DPTR(void *, dptr), | |
10645 | proto_perl)); | |
1d7c1841 GS |
10646 | break; |
10647 | case SAVEt_DESTRUCTOR_X: | |
10648 | ptr = POPPTR(ss,ix); | |
10649 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
10650 | dxptr = POPDXPTR(ss,ix); | |
8141890a JH |
10651 | TOPDXPTR(nss,ix) = DPTR2FPTR(void (*)(pTHX_ void*), |
10652 | any_dup(FPTR2DPTR(void *, dxptr), | |
10653 | proto_perl)); | |
1d7c1841 GS |
10654 | break; |
10655 | case SAVEt_REGCONTEXT: | |
10656 | case SAVEt_ALLOC: | |
10657 | i = POPINT(ss,ix); | |
10658 | TOPINT(nss,ix) = i; | |
10659 | ix -= i; | |
10660 | break; | |
10661 | case SAVEt_STACK_POS: /* Position on Perl stack */ | |
10662 | i = POPINT(ss,ix); | |
10663 | TOPINT(nss,ix) = i; | |
10664 | break; | |
10665 | case SAVEt_AELEM: /* array element */ | |
10666 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10667 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
10668 | i = POPINT(ss,ix); |
10669 | TOPINT(nss,ix) = i; | |
10670 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 10671 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 GS |
10672 | break; |
10673 | case SAVEt_HELEM: /* hash element */ | |
10674 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10675 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 10676 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 10677 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 10678 | hv = (HV*)POPPTR(ss,ix); |
d2d73c3e | 10679 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
10680 | break; |
10681 | case SAVEt_OP: | |
10682 | ptr = POPPTR(ss,ix); | |
10683 | TOPPTR(nss,ix) = ptr; | |
10684 | break; | |
10685 | case SAVEt_HINTS: | |
10686 | i = POPINT(ss,ix); | |
10687 | TOPINT(nss,ix) = i; | |
10688 | break; | |
c4410b1b GS |
10689 | case SAVEt_COMPPAD: |
10690 | av = (AV*)POPPTR(ss,ix); | |
58ed4fbe | 10691 | TOPPTR(nss,ix) = av_dup(av, param); |
c4410b1b | 10692 | break; |
c3564e5c GS |
10693 | case SAVEt_PADSV: |
10694 | longval = (long)POPLONG(ss,ix); | |
10695 | TOPLONG(nss,ix) = longval; | |
10696 | ptr = POPPTR(ss,ix); | |
10697 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10698 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10699 | TOPPTR(nss,ix) = sv_dup(sv, param); |
c3564e5c | 10700 | break; |
a1bb4754 | 10701 | case SAVEt_BOOL: |
38d8b13e | 10702 | ptr = POPPTR(ss,ix); |
b9609c01 | 10703 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); |
38d8b13e | 10704 | longval = (long)POPBOOL(ss,ix); |
b9609c01 | 10705 | TOPBOOL(nss,ix) = (bool)longval; |
a1bb4754 | 10706 | break; |
8bd2680e MHM |
10707 | case SAVEt_SET_SVFLAGS: |
10708 | i = POPINT(ss,ix); | |
10709 | TOPINT(nss,ix) = i; | |
10710 | i = POPINT(ss,ix); | |
10711 | TOPINT(nss,ix) = i; | |
10712 | sv = (SV*)POPPTR(ss,ix); | |
10713 | TOPPTR(nss,ix) = sv_dup(sv, param); | |
10714 | break; | |
1d7c1841 GS |
10715 | default: |
10716 | Perl_croak(aTHX_ "panic: ss_dup inconsistency"); | |
10717 | } | |
10718 | } | |
10719 | ||
10720 | return nss; | |
10721 | } | |
10722 | ||
9660f481 DM |
10723 | |
10724 | /* if sv is a stash, call $class->CLONE_SKIP(), and set the SVphv_CLONEABLE | |
10725 | * flag to the result. This is done for each stash before cloning starts, | |
10726 | * so we know which stashes want their objects cloned */ | |
10727 | ||
10728 | static void | |
10729 | do_mark_cloneable_stash(pTHX_ SV *sv) | |
10730 | { | |
53c1dcc0 | 10731 | const HEK * const hvname = HvNAME_HEK((HV*)sv); |
bfcb3514 | 10732 | if (hvname) { |
53c1dcc0 | 10733 | GV* const cloner = gv_fetchmethod_autoload((HV*)sv, "CLONE_SKIP", 0); |
9660f481 DM |
10734 | SvFLAGS(sv) |= SVphv_CLONEABLE; /* clone objects by default */ |
10735 | if (cloner && GvCV(cloner)) { | |
10736 | dSP; | |
10737 | UV status; | |
10738 | ||
10739 | ENTER; | |
10740 | SAVETMPS; | |
10741 | PUSHMARK(SP); | |
84bda14a | 10742 | XPUSHs(sv_2mortal(newSVhek(hvname))); |
9660f481 DM |
10743 | PUTBACK; |
10744 | call_sv((SV*)GvCV(cloner), G_SCALAR); | |
10745 | SPAGAIN; | |
10746 | status = POPu; | |
10747 | PUTBACK; | |
10748 | FREETMPS; | |
10749 | LEAVE; | |
10750 | if (status) | |
10751 | SvFLAGS(sv) &= ~SVphv_CLONEABLE; | |
10752 | } | |
10753 | } | |
10754 | } | |
10755 | ||
10756 | ||
10757 | ||
645c22ef DM |
10758 | /* |
10759 | =for apidoc perl_clone | |
10760 | ||
10761 | Create and return a new interpreter by cloning the current one. | |
10762 | ||
4be49ee6 | 10763 | perl_clone takes these flags as parameters: |
6a78b4db | 10764 | |
7a5fa8a2 NIS |
10765 | CLONEf_COPY_STACKS - is used to, well, copy the stacks also, |
10766 | without it we only clone the data and zero the stacks, | |
10767 | with it we copy the stacks and the new perl interpreter is | |
10768 | ready to run at the exact same point as the previous one. | |
10769 | The pseudo-fork code uses COPY_STACKS while the | |
6a78b4db AB |
10770 | threads->new doesn't. |
10771 | ||
10772 | CLONEf_KEEP_PTR_TABLE | |
7a5fa8a2 NIS |
10773 | perl_clone keeps a ptr_table with the pointer of the old |
10774 | variable as a key and the new variable as a value, | |
10775 | this allows it to check if something has been cloned and not | |
10776 | clone it again but rather just use the value and increase the | |
10777 | refcount. If KEEP_PTR_TABLE is not set then perl_clone will kill | |
10778 | the ptr_table using the function | |
10779 | C<ptr_table_free(PL_ptr_table); PL_ptr_table = NULL;>, | |
10780 | reason to keep it around is if you want to dup some of your own | |
10781 | variable who are outside the graph perl scans, example of this | |
6a78b4db AB |
10782 | code is in threads.xs create |
10783 | ||
10784 | CLONEf_CLONE_HOST | |
7a5fa8a2 NIS |
10785 | This is a win32 thing, it is ignored on unix, it tells perls |
10786 | win32host code (which is c++) to clone itself, this is needed on | |
10787 | win32 if you want to run two threads at the same time, | |
10788 | if you just want to do some stuff in a separate perl interpreter | |
10789 | and then throw it away and return to the original one, | |
6a78b4db AB |
10790 | you don't need to do anything. |
10791 | ||
645c22ef DM |
10792 | =cut |
10793 | */ | |
10794 | ||
10795 | /* XXX the above needs expanding by someone who actually understands it ! */ | |
3fc56081 NK |
10796 | EXTERN_C PerlInterpreter * |
10797 | perl_clone_host(PerlInterpreter* proto_perl, UV flags); | |
645c22ef | 10798 | |
1d7c1841 GS |
10799 | PerlInterpreter * |
10800 | perl_clone(PerlInterpreter *proto_perl, UV flags) | |
10801 | { | |
27da23d5 | 10802 | dVAR; |
1d7c1841 | 10803 | #ifdef PERL_IMPLICIT_SYS |
c43294b8 AB |
10804 | |
10805 | /* perlhost.h so we need to call into it | |
10806 | to clone the host, CPerlHost should have a c interface, sky */ | |
10807 | ||
10808 | if (flags & CLONEf_CLONE_HOST) { | |
10809 | return perl_clone_host(proto_perl,flags); | |
10810 | } | |
10811 | return perl_clone_using(proto_perl, flags, | |
1d7c1841 GS |
10812 | proto_perl->IMem, |
10813 | proto_perl->IMemShared, | |
10814 | proto_perl->IMemParse, | |
10815 | proto_perl->IEnv, | |
10816 | proto_perl->IStdIO, | |
10817 | proto_perl->ILIO, | |
10818 | proto_perl->IDir, | |
10819 | proto_perl->ISock, | |
10820 | proto_perl->IProc); | |
10821 | } | |
10822 | ||
10823 | PerlInterpreter * | |
10824 | perl_clone_using(PerlInterpreter *proto_perl, UV flags, | |
10825 | struct IPerlMem* ipM, struct IPerlMem* ipMS, | |
10826 | struct IPerlMem* ipMP, struct IPerlEnv* ipE, | |
10827 | struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO, | |
10828 | struct IPerlDir* ipD, struct IPerlSock* ipS, | |
10829 | struct IPerlProc* ipP) | |
10830 | { | |
10831 | /* XXX many of the string copies here can be optimized if they're | |
10832 | * constants; they need to be allocated as common memory and just | |
10833 | * their pointers copied. */ | |
10834 | ||
8fc9efbd | 10835 | IV i; |
64aa0685 GS |
10836 | CLONE_PARAMS clone_params; |
10837 | CLONE_PARAMS* param = &clone_params; | |
d2d73c3e | 10838 | |
1d7c1841 | 10839 | PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter)); |
9660f481 DM |
10840 | /* for each stash, determine whether its objects should be cloned */ |
10841 | S_visit(proto_perl, do_mark_cloneable_stash, SVt_PVHV, SVTYPEMASK); | |
ba869deb | 10842 | PERL_SET_THX(my_perl); |
1d7c1841 | 10843 | |
acfe0abc | 10844 | # ifdef DEBUGGING |
a4530404 | 10845 | Poison(my_perl, 1, PerlInterpreter); |
fd0854ff | 10846 | PL_op = Nullop; |
c008732b | 10847 | PL_curcop = (COP *)Nullop; |
1d7c1841 GS |
10848 | PL_markstack = 0; |
10849 | PL_scopestack = 0; | |
10850 | PL_savestack = 0; | |
22f7c9c9 JH |
10851 | PL_savestack_ix = 0; |
10852 | PL_savestack_max = -1; | |
66fe0623 | 10853 | PL_sig_pending = 0; |
25596c82 | 10854 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); |
acfe0abc | 10855 | # else /* !DEBUGGING */ |
1d7c1841 | 10856 | Zero(my_perl, 1, PerlInterpreter); |
acfe0abc | 10857 | # endif /* DEBUGGING */ |
1d7c1841 GS |
10858 | |
10859 | /* host pointers */ | |
10860 | PL_Mem = ipM; | |
10861 | PL_MemShared = ipMS; | |
10862 | PL_MemParse = ipMP; | |
10863 | PL_Env = ipE; | |
10864 | PL_StdIO = ipStd; | |
10865 | PL_LIO = ipLIO; | |
10866 | PL_Dir = ipD; | |
10867 | PL_Sock = ipS; | |
10868 | PL_Proc = ipP; | |
1d7c1841 GS |
10869 | #else /* !PERL_IMPLICIT_SYS */ |
10870 | IV i; | |
64aa0685 GS |
10871 | CLONE_PARAMS clone_params; |
10872 | CLONE_PARAMS* param = &clone_params; | |
1d7c1841 | 10873 | PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter)); |
9660f481 DM |
10874 | /* for each stash, determine whether its objects should be cloned */ |
10875 | S_visit(proto_perl, do_mark_cloneable_stash, SVt_PVHV, SVTYPEMASK); | |
ba869deb | 10876 | PERL_SET_THX(my_perl); |
1d7c1841 GS |
10877 | |
10878 | # ifdef DEBUGGING | |
a4530404 | 10879 | Poison(my_perl, 1, PerlInterpreter); |
fd0854ff | 10880 | PL_op = Nullop; |
c008732b | 10881 | PL_curcop = (COP *)Nullop; |
1d7c1841 GS |
10882 | PL_markstack = 0; |
10883 | PL_scopestack = 0; | |
10884 | PL_savestack = 0; | |
22f7c9c9 JH |
10885 | PL_savestack_ix = 0; |
10886 | PL_savestack_max = -1; | |
66fe0623 | 10887 | PL_sig_pending = 0; |
25596c82 | 10888 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); |
1d7c1841 GS |
10889 | # else /* !DEBUGGING */ |
10890 | Zero(my_perl, 1, PerlInterpreter); | |
10891 | # endif /* DEBUGGING */ | |
10892 | #endif /* PERL_IMPLICIT_SYS */ | |
83236556 | 10893 | param->flags = flags; |
59b40662 | 10894 | param->proto_perl = proto_perl; |
1d7c1841 GS |
10895 | |
10896 | /* arena roots */ | |
612f20c3 | 10897 | PL_xnv_arenaroot = NULL; |
1d7c1841 | 10898 | PL_xnv_root = NULL; |
612f20c3 | 10899 | PL_xpv_arenaroot = NULL; |
1d7c1841 | 10900 | PL_xpv_root = NULL; |
612f20c3 | 10901 | PL_xpviv_arenaroot = NULL; |
1d7c1841 | 10902 | PL_xpviv_root = NULL; |
612f20c3 | 10903 | PL_xpvnv_arenaroot = NULL; |
1d7c1841 | 10904 | PL_xpvnv_root = NULL; |
612f20c3 | 10905 | PL_xpvcv_arenaroot = NULL; |
1d7c1841 | 10906 | PL_xpvcv_root = NULL; |
612f20c3 | 10907 | PL_xpvav_arenaroot = NULL; |
1d7c1841 | 10908 | PL_xpvav_root = NULL; |
612f20c3 | 10909 | PL_xpvhv_arenaroot = NULL; |
1d7c1841 | 10910 | PL_xpvhv_root = NULL; |
612f20c3 | 10911 | PL_xpvmg_arenaroot = NULL; |
1d7c1841 | 10912 | PL_xpvmg_root = NULL; |
7552b40b DM |
10913 | PL_xpvgv_arenaroot = NULL; |
10914 | PL_xpvgv_root = NULL; | |
612f20c3 | 10915 | PL_xpvlv_arenaroot = NULL; |
1d7c1841 | 10916 | PL_xpvlv_root = NULL; |
612f20c3 | 10917 | PL_xpvbm_arenaroot = NULL; |
1d7c1841 | 10918 | PL_xpvbm_root = NULL; |
612f20c3 | 10919 | PL_he_arenaroot = NULL; |
1d7c1841 | 10920 | PL_he_root = NULL; |
892b45be | 10921 | #if defined(USE_ITHREADS) |
32e691d0 NC |
10922 | PL_pte_arenaroot = NULL; |
10923 | PL_pte_root = NULL; | |
892b45be | 10924 | #endif |
1d7c1841 GS |
10925 | PL_nice_chunk = NULL; |
10926 | PL_nice_chunk_size = 0; | |
10927 | PL_sv_count = 0; | |
10928 | PL_sv_objcount = 0; | |
10929 | PL_sv_root = Nullsv; | |
10930 | PL_sv_arenaroot = Nullsv; | |
10931 | ||
10932 | PL_debug = proto_perl->Idebug; | |
10933 | ||
8df990a8 NC |
10934 | PL_hash_seed = proto_perl->Ihash_seed; |
10935 | PL_rehash_seed = proto_perl->Irehash_seed; | |
10936 | ||
e5dd39fc | 10937 | #ifdef USE_REENTRANT_API |
68853529 SB |
10938 | /* XXX: things like -Dm will segfault here in perlio, but doing |
10939 | * PERL_SET_CONTEXT(proto_perl); | |
10940 | * breaks too many other things | |
10941 | */ | |
59bd0823 | 10942 | Perl_reentrant_init(aTHX); |
e5dd39fc AB |
10943 | #endif |
10944 | ||
1d7c1841 GS |
10945 | /* create SV map for pointer relocation */ |
10946 | PL_ptr_table = ptr_table_new(); | |
10947 | ||
10948 | /* initialize these special pointers as early as possible */ | |
10949 | SvANY(&PL_sv_undef) = NULL; | |
10950 | SvREFCNT(&PL_sv_undef) = (~(U32)0)/2; | |
10951 | SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL; | |
10952 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef); | |
10953 | ||
1d7c1841 | 10954 | SvANY(&PL_sv_no) = new_XPVNV(); |
1d7c1841 | 10955 | SvREFCNT(&PL_sv_no) = (~(U32)0)/2; |
0309f36e NC |
10956 | SvFLAGS(&PL_sv_no) = SVp_IOK|SVf_IOK|SVp_NOK|SVf_NOK |
10957 | |SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
f880fe2f | 10958 | SvPV_set(&PL_sv_no, SAVEPVN(PL_No, 0)); |
b162af07 SP |
10959 | SvCUR_set(&PL_sv_no, 0); |
10960 | SvLEN_set(&PL_sv_no, 1); | |
45977657 | 10961 | SvIV_set(&PL_sv_no, 0); |
9d6ce603 | 10962 | SvNV_set(&PL_sv_no, 0); |
1d7c1841 GS |
10963 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no); |
10964 | ||
1d7c1841 | 10965 | SvANY(&PL_sv_yes) = new_XPVNV(); |
1d7c1841 | 10966 | SvREFCNT(&PL_sv_yes) = (~(U32)0)/2; |
0309f36e NC |
10967 | SvFLAGS(&PL_sv_yes) = SVp_IOK|SVf_IOK|SVp_NOK|SVf_NOK |
10968 | |SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
f880fe2f | 10969 | SvPV_set(&PL_sv_yes, SAVEPVN(PL_Yes, 1)); |
b162af07 SP |
10970 | SvCUR_set(&PL_sv_yes, 1); |
10971 | SvLEN_set(&PL_sv_yes, 2); | |
45977657 | 10972 | SvIV_set(&PL_sv_yes, 1); |
9d6ce603 | 10973 | SvNV_set(&PL_sv_yes, 1); |
1d7c1841 GS |
10974 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes); |
10975 | ||
05ec9bb3 | 10976 | /* create (a non-shared!) shared string table */ |
1d7c1841 GS |
10977 | PL_strtab = newHV(); |
10978 | HvSHAREKEYS_off(PL_strtab); | |
c4a9c09d | 10979 | hv_ksplit(PL_strtab, HvTOTALKEYS(proto_perl->Istrtab)); |
1d7c1841 GS |
10980 | ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab); |
10981 | ||
05ec9bb3 NIS |
10982 | PL_compiling = proto_perl->Icompiling; |
10983 | ||
10984 | /* These two PVs will be free'd special way so must set them same way op.c does */ | |
10985 | PL_compiling.cop_stashpv = savesharedpv(PL_compiling.cop_stashpv); | |
10986 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_stashpv, PL_compiling.cop_stashpv); | |
10987 | ||
10988 | PL_compiling.cop_file = savesharedpv(PL_compiling.cop_file); | |
10989 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_file, PL_compiling.cop_file); | |
10990 | ||
1d7c1841 GS |
10991 | ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling); |
10992 | if (!specialWARN(PL_compiling.cop_warnings)) | |
d2d73c3e | 10993 | PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings, param); |
ac27b0f5 | 10994 | if (!specialCopIO(PL_compiling.cop_io)) |
d2d73c3e | 10995 | PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io, param); |
1d7c1841 GS |
10996 | PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl); |
10997 | ||
10998 | /* pseudo environmental stuff */ | |
10999 | PL_origargc = proto_perl->Iorigargc; | |
e2975953 | 11000 | PL_origargv = proto_perl->Iorigargv; |
d2d73c3e | 11001 | |
d2d73c3e AB |
11002 | param->stashes = newAV(); /* Setup array of objects to call clone on */ |
11003 | ||
d419787a SH |
11004 | /* Set tainting stuff before PerlIO_debug can possibly get called */ |
11005 | PL_tainting = proto_perl->Itainting; | |
11006 | PL_taint_warn = proto_perl->Itaint_warn; | |
11007 | ||
a1ea730d | 11008 | #ifdef PERLIO_LAYERS |
3a1ee7e8 NIS |
11009 | /* Clone PerlIO tables as soon as we can handle general xx_dup() */ |
11010 | PerlIO_clone(aTHX_ proto_perl, param); | |
a1ea730d | 11011 | #endif |
d2d73c3e AB |
11012 | |
11013 | PL_envgv = gv_dup(proto_perl->Ienvgv, param); | |
11014 | PL_incgv = gv_dup(proto_perl->Iincgv, param); | |
11015 | PL_hintgv = gv_dup(proto_perl->Ihintgv, param); | |
1d7c1841 | 11016 | PL_origfilename = SAVEPV(proto_perl->Iorigfilename); |
d2d73c3e AB |
11017 | PL_diehook = sv_dup_inc(proto_perl->Idiehook, param); |
11018 | PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook, param); | |
1d7c1841 GS |
11019 | |
11020 | /* switches */ | |
11021 | PL_minus_c = proto_perl->Iminus_c; | |
d2d73c3e | 11022 | PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel, param); |
1d7c1841 GS |
11023 | PL_localpatches = proto_perl->Ilocalpatches; |
11024 | PL_splitstr = proto_perl->Isplitstr; | |
11025 | PL_preprocess = proto_perl->Ipreprocess; | |
11026 | PL_minus_n = proto_perl->Iminus_n; | |
11027 | PL_minus_p = proto_perl->Iminus_p; | |
11028 | PL_minus_l = proto_perl->Iminus_l; | |
11029 | PL_minus_a = proto_perl->Iminus_a; | |
11030 | PL_minus_F = proto_perl->Iminus_F; | |
11031 | PL_doswitches = proto_perl->Idoswitches; | |
11032 | PL_dowarn = proto_perl->Idowarn; | |
11033 | PL_doextract = proto_perl->Idoextract; | |
11034 | PL_sawampersand = proto_perl->Isawampersand; | |
11035 | PL_unsafe = proto_perl->Iunsafe; | |
11036 | PL_inplace = SAVEPV(proto_perl->Iinplace); | |
d2d73c3e | 11037 | PL_e_script = sv_dup_inc(proto_perl->Ie_script, param); |
1d7c1841 GS |
11038 | PL_perldb = proto_perl->Iperldb; |
11039 | PL_perl_destruct_level = proto_perl->Iperl_destruct_level; | |
1cbb0781 | 11040 | PL_exit_flags = proto_perl->Iexit_flags; |
1d7c1841 GS |
11041 | |
11042 | /* magical thingies */ | |
11043 | /* XXX time(&PL_basetime) when asked for? */ | |
11044 | PL_basetime = proto_perl->Ibasetime; | |
d2d73c3e | 11045 | PL_formfeed = sv_dup(proto_perl->Iformfeed, param); |
1d7c1841 GS |
11046 | |
11047 | PL_maxsysfd = proto_perl->Imaxsysfd; | |
11048 | PL_multiline = proto_perl->Imultiline; | |
11049 | PL_statusvalue = proto_perl->Istatusvalue; | |
11050 | #ifdef VMS | |
11051 | PL_statusvalue_vms = proto_perl->Istatusvalue_vms; | |
49cf9041 GA |
11052 | #else |
11053 | PL_statusvalue_posix = proto_perl->Istatusvalue_posix; | |
1d7c1841 | 11054 | #endif |
0a378802 | 11055 | PL_encoding = sv_dup(proto_perl->Iencoding, param); |
1d7c1841 | 11056 | |
4a4c6fe3 | 11057 | sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */ |
1f483ca1 JH |
11058 | sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */ |
11059 | sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */ | |
4a4c6fe3 | 11060 | |
d2f185dc AMS |
11061 | /* Clone the regex array */ |
11062 | PL_regex_padav = newAV(); | |
11063 | { | |
a3b680e6 | 11064 | const I32 len = av_len((AV*)proto_perl->Iregex_padav); |
53c1dcc0 | 11065 | SV** const regexen = AvARRAY((AV*)proto_perl->Iregex_padav); |
b464bac0 | 11066 | IV i; |
0f95fc41 AB |
11067 | av_push(PL_regex_padav, |
11068 | sv_dup_inc(regexen[0],param)); | |
11069 | for(i = 1; i <= len; i++) { | |
11070 | if(SvREPADTMP(regexen[i])) { | |
11071 | av_push(PL_regex_padav, sv_dup_inc(regexen[i], param)); | |
8cf8f3d1 | 11072 | } else { |
0f95fc41 AB |
11073 | av_push(PL_regex_padav, |
11074 | SvREFCNT_inc( | |
8cf8f3d1 | 11075 | newSViv(PTR2IV(re_dup(INT2PTR(REGEXP *, |
cbfa9890 | 11076 | SvIVX(regexen[i])), param))) |
0f95fc41 AB |
11077 | )); |
11078 | } | |
d2f185dc AMS |
11079 | } |
11080 | } | |
11081 | PL_regex_pad = AvARRAY(PL_regex_padav); | |
1fcf4c12 | 11082 | |
1d7c1841 | 11083 | /* shortcuts to various I/O objects */ |
d2d73c3e AB |
11084 | PL_stdingv = gv_dup(proto_perl->Istdingv, param); |
11085 | PL_stderrgv = gv_dup(proto_perl->Istderrgv, param); | |
11086 | PL_defgv = gv_dup(proto_perl->Idefgv, param); | |
11087 | PL_argvgv = gv_dup(proto_perl->Iargvgv, param); | |
11088 | PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv, param); | |
11089 | PL_argvout_stack = av_dup_inc(proto_perl->Iargvout_stack, param); | |
1d7c1841 GS |
11090 | |
11091 | /* shortcuts to regexp stuff */ | |
d2d73c3e | 11092 | PL_replgv = gv_dup(proto_perl->Ireplgv, param); |
1d7c1841 GS |
11093 | |
11094 | /* shortcuts to misc objects */ | |
d2d73c3e | 11095 | PL_errgv = gv_dup(proto_perl->Ierrgv, param); |
1d7c1841 GS |
11096 | |
11097 | /* shortcuts to debugging objects */ | |
d2d73c3e AB |
11098 | PL_DBgv = gv_dup(proto_perl->IDBgv, param); |
11099 | PL_DBline = gv_dup(proto_perl->IDBline, param); | |
11100 | PL_DBsub = gv_dup(proto_perl->IDBsub, param); | |
11101 | PL_DBsingle = sv_dup(proto_perl->IDBsingle, param); | |
11102 | PL_DBtrace = sv_dup(proto_perl->IDBtrace, param); | |
11103 | PL_DBsignal = sv_dup(proto_perl->IDBsignal, param); | |
06492da6 | 11104 | PL_DBassertion = sv_dup(proto_perl->IDBassertion, param); |
d2d73c3e AB |
11105 | PL_lineary = av_dup(proto_perl->Ilineary, param); |
11106 | PL_dbargs = av_dup(proto_perl->Idbargs, param); | |
1d7c1841 GS |
11107 | |
11108 | /* symbol tables */ | |
d2d73c3e AB |
11109 | PL_defstash = hv_dup_inc(proto_perl->Tdefstash, param); |
11110 | PL_curstash = hv_dup(proto_perl->Tcurstash, param); | |
d2d73c3e AB |
11111 | PL_debstash = hv_dup(proto_perl->Idebstash, param); |
11112 | PL_globalstash = hv_dup(proto_perl->Iglobalstash, param); | |
11113 | PL_curstname = sv_dup_inc(proto_perl->Icurstname, param); | |
11114 | ||
11115 | PL_beginav = av_dup_inc(proto_perl->Ibeginav, param); | |
ee1c5a4e | 11116 | PL_beginav_save = av_dup_inc(proto_perl->Ibeginav_save, param); |
ece599bd | 11117 | PL_checkav_save = av_dup_inc(proto_perl->Icheckav_save, param); |
d2d73c3e AB |
11118 | PL_endav = av_dup_inc(proto_perl->Iendav, param); |
11119 | PL_checkav = av_dup_inc(proto_perl->Icheckav, param); | |
11120 | PL_initav = av_dup_inc(proto_perl->Iinitav, param); | |
1d7c1841 GS |
11121 | |
11122 | PL_sub_generation = proto_perl->Isub_generation; | |
11123 | ||
11124 | /* funky return mechanisms */ | |
11125 | PL_forkprocess = proto_perl->Iforkprocess; | |
11126 | ||
11127 | /* subprocess state */ | |
d2d73c3e | 11128 | PL_fdpid = av_dup_inc(proto_perl->Ifdpid, param); |
1d7c1841 GS |
11129 | |
11130 | /* internal state */ | |
1d7c1841 GS |
11131 | PL_maxo = proto_perl->Imaxo; |
11132 | if (proto_perl->Iop_mask) | |
11133 | PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo); | |
11134 | else | |
11135 | PL_op_mask = Nullch; | |
06492da6 | 11136 | /* PL_asserting = proto_perl->Iasserting; */ |
1d7c1841 GS |
11137 | |
11138 | /* current interpreter roots */ | |
d2d73c3e | 11139 | PL_main_cv = cv_dup_inc(proto_perl->Imain_cv, param); |
1d7c1841 GS |
11140 | PL_main_root = OpREFCNT_inc(proto_perl->Imain_root); |
11141 | PL_main_start = proto_perl->Imain_start; | |
e977893f | 11142 | PL_eval_root = proto_perl->Ieval_root; |
1d7c1841 GS |
11143 | PL_eval_start = proto_perl->Ieval_start; |
11144 | ||
11145 | /* runtime control stuff */ | |
11146 | PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl); | |
11147 | PL_copline = proto_perl->Icopline; | |
11148 | ||
11149 | PL_filemode = proto_perl->Ifilemode; | |
11150 | PL_lastfd = proto_perl->Ilastfd; | |
11151 | PL_oldname = proto_perl->Ioldname; /* XXX not quite right */ | |
11152 | PL_Argv = NULL; | |
11153 | PL_Cmd = Nullch; | |
11154 | PL_gensym = proto_perl->Igensym; | |
11155 | PL_preambled = proto_perl->Ipreambled; | |
d2d73c3e | 11156 | PL_preambleav = av_dup_inc(proto_perl->Ipreambleav, param); |
1d7c1841 GS |
11157 | PL_laststatval = proto_perl->Ilaststatval; |
11158 | PL_laststype = proto_perl->Ilaststype; | |
11159 | PL_mess_sv = Nullsv; | |
11160 | ||
d2d73c3e | 11161 | PL_ors_sv = sv_dup_inc(proto_perl->Iors_sv, param); |
1d7c1841 GS |
11162 | |
11163 | /* interpreter atexit processing */ | |
11164 | PL_exitlistlen = proto_perl->Iexitlistlen; | |
11165 | if (PL_exitlistlen) { | |
a02a5408 | 11166 | Newx(PL_exitlist, PL_exitlistlen, PerlExitListEntry); |
1d7c1841 GS |
11167 | Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry); |
11168 | } | |
11169 | else | |
11170 | PL_exitlist = (PerlExitListEntry*)NULL; | |
d2d73c3e | 11171 | PL_modglobal = hv_dup_inc(proto_perl->Imodglobal, param); |
19e8ce8e AB |
11172 | PL_custom_op_names = hv_dup_inc(proto_perl->Icustom_op_names,param); |
11173 | PL_custom_op_descs = hv_dup_inc(proto_perl->Icustom_op_descs,param); | |
1d7c1841 GS |
11174 | |
11175 | PL_profiledata = NULL; | |
a8fc9800 | 11176 | PL_rsfp = fp_dup(proto_perl->Irsfp, '<', param); |
1d7c1841 | 11177 | /* PL_rsfp_filters entries have fake IoDIRP() */ |
d2d73c3e | 11178 | PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters, param); |
1d7c1841 | 11179 | |
d2d73c3e | 11180 | PL_compcv = cv_dup(proto_perl->Icompcv, param); |
dd2155a4 DM |
11181 | |
11182 | PAD_CLONE_VARS(proto_perl, param); | |
1d7c1841 GS |
11183 | |
11184 | #ifdef HAVE_INTERP_INTERN | |
11185 | sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern); | |
11186 | #endif | |
11187 | ||
11188 | /* more statics moved here */ | |
11189 | PL_generation = proto_perl->Igeneration; | |
d2d73c3e | 11190 | PL_DBcv = cv_dup(proto_perl->IDBcv, param); |
1d7c1841 GS |
11191 | |
11192 | PL_in_clean_objs = proto_perl->Iin_clean_objs; | |
11193 | PL_in_clean_all = proto_perl->Iin_clean_all; | |
11194 | ||
11195 | PL_uid = proto_perl->Iuid; | |
11196 | PL_euid = proto_perl->Ieuid; | |
11197 | PL_gid = proto_perl->Igid; | |
11198 | PL_egid = proto_perl->Iegid; | |
11199 | PL_nomemok = proto_perl->Inomemok; | |
11200 | PL_an = proto_perl->Ian; | |
1d7c1841 GS |
11201 | PL_evalseq = proto_perl->Ievalseq; |
11202 | PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */ | |
11203 | PL_origalen = proto_perl->Iorigalen; | |
ca0c25f6 | 11204 | #ifdef PERL_USES_PL_PIDSTATUS |
1d7c1841 | 11205 | PL_pidstatus = newHV(); /* XXX flag for cloning? */ |
ca0c25f6 | 11206 | #endif |
1d7c1841 | 11207 | PL_osname = SAVEPV(proto_perl->Iosname); |
1d7c1841 GS |
11208 | PL_sighandlerp = proto_perl->Isighandlerp; |
11209 | ||
1d7c1841 GS |
11210 | PL_runops = proto_perl->Irunops; |
11211 | ||
11212 | Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char); | |
11213 | ||
11214 | #ifdef CSH | |
11215 | PL_cshlen = proto_perl->Icshlen; | |
74f1b2b8 | 11216 | PL_cshname = proto_perl->Icshname; /* XXX never deallocated */ |
1d7c1841 GS |
11217 | #endif |
11218 | ||
11219 | PL_lex_state = proto_perl->Ilex_state; | |
11220 | PL_lex_defer = proto_perl->Ilex_defer; | |
11221 | PL_lex_expect = proto_perl->Ilex_expect; | |
11222 | PL_lex_formbrack = proto_perl->Ilex_formbrack; | |
11223 | PL_lex_dojoin = proto_perl->Ilex_dojoin; | |
11224 | PL_lex_starts = proto_perl->Ilex_starts; | |
d2d73c3e AB |
11225 | PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff, param); |
11226 | PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl, param); | |
1d7c1841 GS |
11227 | PL_lex_op = proto_perl->Ilex_op; |
11228 | PL_lex_inpat = proto_perl->Ilex_inpat; | |
11229 | PL_lex_inwhat = proto_perl->Ilex_inwhat; | |
11230 | PL_lex_brackets = proto_perl->Ilex_brackets; | |
11231 | i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets); | |
11232 | PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i); | |
11233 | PL_lex_casemods = proto_perl->Ilex_casemods; | |
11234 | i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods); | |
11235 | PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i); | |
11236 | ||
11237 | Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE); | |
11238 | Copy(proto_perl->Inexttype, PL_nexttype, 5, I32); | |
11239 | PL_nexttoke = proto_perl->Inexttoke; | |
11240 | ||
1d773130 TB |
11241 | /* XXX This is probably masking the deeper issue of why |
11242 | * SvANY(proto_perl->Ilinestr) can be NULL at this point. For test case: | |
11243 | * http://archive.develooper.com/perl5-porters%40perl.org/msg83298.html | |
11244 | * (A little debugging with a watchpoint on it may help.) | |
11245 | */ | |
389edf32 TB |
11246 | if (SvANY(proto_perl->Ilinestr)) { |
11247 | PL_linestr = sv_dup_inc(proto_perl->Ilinestr, param); | |
3f7c398e | 11248 | i = proto_perl->Ibufptr - SvPVX_const(proto_perl->Ilinestr); |
389edf32 | 11249 | PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); |
3f7c398e | 11250 | i = proto_perl->Ioldbufptr - SvPVX_const(proto_perl->Ilinestr); |
389edf32 | 11251 | PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); |
3f7c398e | 11252 | i = proto_perl->Ioldoldbufptr - SvPVX_const(proto_perl->Ilinestr); |
389edf32 | 11253 | PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); |
3f7c398e | 11254 | i = proto_perl->Ilinestart - SvPVX_const(proto_perl->Ilinestr); |
389edf32 TB |
11255 | PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i); |
11256 | } | |
11257 | else { | |
11258 | PL_linestr = NEWSV(65,79); | |
11259 | sv_upgrade(PL_linestr,SVt_PVIV); | |
11260 | sv_setpvn(PL_linestr,"",0); | |
11261 | PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
11262 | } | |
1d7c1841 | 11263 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
1d7c1841 GS |
11264 | PL_pending_ident = proto_perl->Ipending_ident; |
11265 | PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */ | |
11266 | ||
11267 | PL_expect = proto_perl->Iexpect; | |
11268 | ||
11269 | PL_multi_start = proto_perl->Imulti_start; | |
11270 | PL_multi_end = proto_perl->Imulti_end; | |
11271 | PL_multi_open = proto_perl->Imulti_open; | |
11272 | PL_multi_close = proto_perl->Imulti_close; | |
11273 | ||
11274 | PL_error_count = proto_perl->Ierror_count; | |
11275 | PL_subline = proto_perl->Isubline; | |
d2d73c3e | 11276 | PL_subname = sv_dup_inc(proto_perl->Isubname, param); |
1d7c1841 | 11277 | |
1d773130 | 11278 | /* XXX See comment on SvANY(proto_perl->Ilinestr) above */ |
389edf32 | 11279 | if (SvANY(proto_perl->Ilinestr)) { |
3f7c398e | 11280 | i = proto_perl->Ilast_uni - SvPVX_const(proto_perl->Ilinestr); |
389edf32 | 11281 | PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i); |
3f7c398e | 11282 | i = proto_perl->Ilast_lop - SvPVX_const(proto_perl->Ilinestr); |
389edf32 TB |
11283 | PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i); |
11284 | PL_last_lop_op = proto_perl->Ilast_lop_op; | |
11285 | } | |
11286 | else { | |
11287 | PL_last_uni = SvPVX(PL_linestr); | |
11288 | PL_last_lop = SvPVX(PL_linestr); | |
11289 | PL_last_lop_op = 0; | |
11290 | } | |
1d7c1841 | 11291 | PL_in_my = proto_perl->Iin_my; |
d2d73c3e | 11292 | PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash, param); |
1d7c1841 GS |
11293 | #ifdef FCRYPT |
11294 | PL_cryptseen = proto_perl->Icryptseen; | |
11295 | #endif | |
11296 | ||
11297 | PL_hints = proto_perl->Ihints; | |
11298 | ||
11299 | PL_amagic_generation = proto_perl->Iamagic_generation; | |
11300 | ||
11301 | #ifdef USE_LOCALE_COLLATE | |
11302 | PL_collation_ix = proto_perl->Icollation_ix; | |
11303 | PL_collation_name = SAVEPV(proto_perl->Icollation_name); | |
11304 | PL_collation_standard = proto_perl->Icollation_standard; | |
11305 | PL_collxfrm_base = proto_perl->Icollxfrm_base; | |
11306 | PL_collxfrm_mult = proto_perl->Icollxfrm_mult; | |
11307 | #endif /* USE_LOCALE_COLLATE */ | |
11308 | ||
11309 | #ifdef USE_LOCALE_NUMERIC | |
11310 | PL_numeric_name = SAVEPV(proto_perl->Inumeric_name); | |
11311 | PL_numeric_standard = proto_perl->Inumeric_standard; | |
11312 | PL_numeric_local = proto_perl->Inumeric_local; | |
d2d73c3e | 11313 | PL_numeric_radix_sv = sv_dup_inc(proto_perl->Inumeric_radix_sv, param); |
1d7c1841 GS |
11314 | #endif /* !USE_LOCALE_NUMERIC */ |
11315 | ||
11316 | /* utf8 character classes */ | |
d2d73c3e AB |
11317 | PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum, param); |
11318 | PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc, param); | |
11319 | PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii, param); | |
11320 | PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha, param); | |
11321 | PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space, param); | |
11322 | PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl, param); | |
11323 | PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph, param); | |
11324 | PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit, param); | |
11325 | PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper, param); | |
11326 | PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower, param); | |
11327 | PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print, param); | |
11328 | PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct, param); | |
11329 | PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit, param); | |
11330 | PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark, param); | |
11331 | PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper, param); | |
11332 | PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle, param); | |
11333 | PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower, param); | |
b4e400f9 | 11334 | PL_utf8_tofold = sv_dup_inc(proto_perl->Iutf8_tofold, param); |
82686b01 JH |
11335 | PL_utf8_idstart = sv_dup_inc(proto_perl->Iutf8_idstart, param); |
11336 | PL_utf8_idcont = sv_dup_inc(proto_perl->Iutf8_idcont, param); | |
1d7c1841 | 11337 | |
6c3182a5 | 11338 | /* Did the locale setup indicate UTF-8? */ |
9769094f | 11339 | PL_utf8locale = proto_perl->Iutf8locale; |
6c3182a5 JH |
11340 | /* Unicode features (see perlrun/-C) */ |
11341 | PL_unicode = proto_perl->Iunicode; | |
11342 | ||
11343 | /* Pre-5.8 signals control */ | |
11344 | PL_signals = proto_perl->Isignals; | |
11345 | ||
11346 | /* times() ticks per second */ | |
11347 | PL_clocktick = proto_perl->Iclocktick; | |
11348 | ||
11349 | /* Recursion stopper for PerlIO_find_layer */ | |
11350 | PL_in_load_module = proto_perl->Iin_load_module; | |
11351 | ||
11352 | /* sort() routine */ | |
11353 | PL_sort_RealCmp = proto_perl->Isort_RealCmp; | |
11354 | ||
57c6e6d2 JH |
11355 | /* Not really needed/useful since the reenrant_retint is "volatile", |
11356 | * but do it for consistency's sake. */ | |
11357 | PL_reentrant_retint = proto_perl->Ireentrant_retint; | |
11358 | ||
15a5279a JH |
11359 | /* Hooks to shared SVs and locks. */ |
11360 | PL_sharehook = proto_perl->Isharehook; | |
11361 | PL_lockhook = proto_perl->Ilockhook; | |
11362 | PL_unlockhook = proto_perl->Iunlockhook; | |
11363 | PL_threadhook = proto_perl->Ithreadhook; | |
11364 | ||
bce260cd JH |
11365 | PL_runops_std = proto_perl->Irunops_std; |
11366 | PL_runops_dbg = proto_perl->Irunops_dbg; | |
11367 | ||
11368 | #ifdef THREADS_HAVE_PIDS | |
11369 | PL_ppid = proto_perl->Ippid; | |
11370 | #endif | |
11371 | ||
1d7c1841 GS |
11372 | /* swatch cache */ |
11373 | PL_last_swash_hv = Nullhv; /* reinits on demand */ | |
11374 | PL_last_swash_klen = 0; | |
11375 | PL_last_swash_key[0]= '\0'; | |
11376 | PL_last_swash_tmps = (U8*)NULL; | |
11377 | PL_last_swash_slen = 0; | |
11378 | ||
1d7c1841 GS |
11379 | PL_glob_index = proto_perl->Iglob_index; |
11380 | PL_srand_called = proto_perl->Isrand_called; | |
11381 | PL_uudmap['M'] = 0; /* reinits on demand */ | |
11382 | PL_bitcount = Nullch; /* reinits on demand */ | |
11383 | ||
66fe0623 | 11384 | if (proto_perl->Ipsig_pend) { |
a02a5408 | 11385 | Newxz(PL_psig_pend, SIG_SIZE, int); |
9dd79c3f | 11386 | } |
66fe0623 NIS |
11387 | else { |
11388 | PL_psig_pend = (int*)NULL; | |
11389 | } | |
11390 | ||
1d7c1841 | 11391 | if (proto_perl->Ipsig_ptr) { |
a02a5408 JC |
11392 | Newxz(PL_psig_ptr, SIG_SIZE, SV*); |
11393 | Newxz(PL_psig_name, SIG_SIZE, SV*); | |
76d3c696 | 11394 | for (i = 1; i < SIG_SIZE; i++) { |
d2d73c3e AB |
11395 | PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i], param); |
11396 | PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i], param); | |
1d7c1841 GS |
11397 | } |
11398 | } | |
11399 | else { | |
11400 | PL_psig_ptr = (SV**)NULL; | |
11401 | PL_psig_name = (SV**)NULL; | |
11402 | } | |
11403 | ||
11404 | /* thrdvar.h stuff */ | |
11405 | ||
a0739874 | 11406 | if (flags & CLONEf_COPY_STACKS) { |
1d7c1841 GS |
11407 | /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */ |
11408 | PL_tmps_ix = proto_perl->Ttmps_ix; | |
11409 | PL_tmps_max = proto_perl->Ttmps_max; | |
11410 | PL_tmps_floor = proto_perl->Ttmps_floor; | |
a02a5408 | 11411 | Newxz(PL_tmps_stack, PL_tmps_max, SV*); |
1d7c1841 GS |
11412 | i = 0; |
11413 | while (i <= PL_tmps_ix) { | |
d2d73c3e | 11414 | PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i], param); |
1d7c1841 GS |
11415 | ++i; |
11416 | } | |
11417 | ||
11418 | /* next PUSHMARK() sets *(PL_markstack_ptr+1) */ | |
11419 | i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack; | |
a02a5408 | 11420 | Newxz(PL_markstack, i, I32); |
1d7c1841 GS |
11421 | PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max |
11422 | - proto_perl->Tmarkstack); | |
11423 | PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr | |
11424 | - proto_perl->Tmarkstack); | |
11425 | Copy(proto_perl->Tmarkstack, PL_markstack, | |
11426 | PL_markstack_ptr - PL_markstack + 1, I32); | |
11427 | ||
11428 | /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix] | |
11429 | * NOTE: unlike the others! */ | |
11430 | PL_scopestack_ix = proto_perl->Tscopestack_ix; | |
11431 | PL_scopestack_max = proto_perl->Tscopestack_max; | |
a02a5408 | 11432 | Newxz(PL_scopestack, PL_scopestack_max, I32); |
1d7c1841 GS |
11433 | Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32); |
11434 | ||
1d7c1841 | 11435 | /* NOTE: si_dup() looks at PL_markstack */ |
d2d73c3e | 11436 | PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo, param); |
1d7c1841 GS |
11437 | |
11438 | /* PL_curstack = PL_curstackinfo->si_stack; */ | |
d2d73c3e AB |
11439 | PL_curstack = av_dup(proto_perl->Tcurstack, param); |
11440 | PL_mainstack = av_dup(proto_perl->Tmainstack, param); | |
1d7c1841 GS |
11441 | |
11442 | /* next PUSHs() etc. set *(PL_stack_sp+1) */ | |
11443 | PL_stack_base = AvARRAY(PL_curstack); | |
11444 | PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp | |
11445 | - proto_perl->Tstack_base); | |
11446 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); | |
11447 | ||
11448 | /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix] | |
11449 | * NOTE: unlike the others! */ | |
11450 | PL_savestack_ix = proto_perl->Tsavestack_ix; | |
11451 | PL_savestack_max = proto_perl->Tsavestack_max; | |
a02a5408 | 11452 | /*Newxz(PL_savestack, PL_savestack_max, ANY);*/ |
d2d73c3e | 11453 | PL_savestack = ss_dup(proto_perl, param); |
1d7c1841 GS |
11454 | } |
11455 | else { | |
11456 | init_stacks(); | |
985e7056 | 11457 | ENTER; /* perl_destruct() wants to LEAVE; */ |
1d7c1841 GS |
11458 | } |
11459 | ||
11460 | PL_start_env = proto_perl->Tstart_env; /* XXXXXX */ | |
11461 | PL_top_env = &PL_start_env; | |
11462 | ||
11463 | PL_op = proto_perl->Top; | |
11464 | ||
11465 | PL_Sv = Nullsv; | |
11466 | PL_Xpv = (XPV*)NULL; | |
11467 | PL_na = proto_perl->Tna; | |
11468 | ||
11469 | PL_statbuf = proto_perl->Tstatbuf; | |
11470 | PL_statcache = proto_perl->Tstatcache; | |
d2d73c3e AB |
11471 | PL_statgv = gv_dup(proto_perl->Tstatgv, param); |
11472 | PL_statname = sv_dup_inc(proto_perl->Tstatname, param); | |
1d7c1841 GS |
11473 | #ifdef HAS_TIMES |
11474 | PL_timesbuf = proto_perl->Ttimesbuf; | |
11475 | #endif | |
11476 | ||
11477 | PL_tainted = proto_perl->Ttainted; | |
11478 | PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */ | |
d2d73c3e AB |
11479 | PL_rs = sv_dup_inc(proto_perl->Trs, param); |
11480 | PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv, param); | |
11481 | PL_ofs_sv = sv_dup_inc(proto_perl->Tofs_sv, param); | |
11482 | PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv, param); | |
1d7c1841 | 11483 | PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */ |
d2d73c3e AB |
11484 | PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget, param); |
11485 | PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget, param); | |
11486 | PL_formtarget = sv_dup(proto_perl->Tformtarget, param); | |
1d7c1841 GS |
11487 | |
11488 | PL_restartop = proto_perl->Trestartop; | |
11489 | PL_in_eval = proto_perl->Tin_eval; | |
11490 | PL_delaymagic = proto_perl->Tdelaymagic; | |
11491 | PL_dirty = proto_perl->Tdirty; | |
11492 | PL_localizing = proto_perl->Tlocalizing; | |
11493 | ||
d2d73c3e | 11494 | PL_errors = sv_dup_inc(proto_perl->Terrors, param); |
dd28f7bb | 11495 | PL_hv_fetch_ent_mh = Nullhe; |
1d7c1841 GS |
11496 | PL_modcount = proto_perl->Tmodcount; |
11497 | PL_lastgotoprobe = Nullop; | |
11498 | PL_dumpindent = proto_perl->Tdumpindent; | |
11499 | ||
11500 | PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl); | |
d2d73c3e AB |
11501 | PL_sortstash = hv_dup(proto_perl->Tsortstash, param); |
11502 | PL_firstgv = gv_dup(proto_perl->Tfirstgv, param); | |
11503 | PL_secondgv = gv_dup(proto_perl->Tsecondgv, param); | |
1d7c1841 GS |
11504 | PL_efloatbuf = Nullch; /* reinits on demand */ |
11505 | PL_efloatsize = 0; /* reinits on demand */ | |
11506 | ||
11507 | /* regex stuff */ | |
11508 | ||
11509 | PL_screamfirst = NULL; | |
11510 | PL_screamnext = NULL; | |
11511 | PL_maxscream = -1; /* reinits on demand */ | |
11512 | PL_lastscream = Nullsv; | |
11513 | ||
11514 | PL_watchaddr = NULL; | |
11515 | PL_watchok = Nullch; | |
11516 | ||
11517 | PL_regdummy = proto_perl->Tregdummy; | |
1d7c1841 GS |
11518 | PL_regprecomp = Nullch; |
11519 | PL_regnpar = 0; | |
11520 | PL_regsize = 0; | |
1d7c1841 GS |
11521 | PL_colorset = 0; /* reinits PL_colors[] */ |
11522 | /*PL_colors[6] = {0,0,0,0,0,0};*/ | |
1d7c1841 GS |
11523 | PL_reginput = Nullch; |
11524 | PL_regbol = Nullch; | |
11525 | PL_regeol = Nullch; | |
11526 | PL_regstartp = (I32*)NULL; | |
11527 | PL_regendp = (I32*)NULL; | |
11528 | PL_reglastparen = (U32*)NULL; | |
2d862feb | 11529 | PL_reglastcloseparen = (U32*)NULL; |
1d7c1841 | 11530 | PL_regtill = Nullch; |
1d7c1841 GS |
11531 | PL_reg_start_tmp = (char**)NULL; |
11532 | PL_reg_start_tmpl = 0; | |
11533 | PL_regdata = (struct reg_data*)NULL; | |
11534 | PL_bostr = Nullch; | |
11535 | PL_reg_flags = 0; | |
11536 | PL_reg_eval_set = 0; | |
11537 | PL_regnarrate = 0; | |
11538 | PL_regprogram = (regnode*)NULL; | |
11539 | PL_regindent = 0; | |
11540 | PL_regcc = (CURCUR*)NULL; | |
11541 | PL_reg_call_cc = (struct re_cc_state*)NULL; | |
11542 | PL_reg_re = (regexp*)NULL; | |
11543 | PL_reg_ganch = Nullch; | |
11544 | PL_reg_sv = Nullsv; | |
53c4c00c | 11545 | PL_reg_match_utf8 = FALSE; |
1d7c1841 GS |
11546 | PL_reg_magic = (MAGIC*)NULL; |
11547 | PL_reg_oldpos = 0; | |
11548 | PL_reg_oldcurpm = (PMOP*)NULL; | |
11549 | PL_reg_curpm = (PMOP*)NULL; | |
11550 | PL_reg_oldsaved = Nullch; | |
11551 | PL_reg_oldsavedlen = 0; | |
f8c7b90f | 11552 | #ifdef PERL_OLD_COPY_ON_WRITE |
504cff3b | 11553 | PL_nrs = Nullsv; |
ed252734 | 11554 | #endif |
1d7c1841 GS |
11555 | PL_reg_maxiter = 0; |
11556 | PL_reg_leftiter = 0; | |
11557 | PL_reg_poscache = Nullch; | |
11558 | PL_reg_poscache_size= 0; | |
11559 | ||
11560 | /* RE engine - function pointers */ | |
11561 | PL_regcompp = proto_perl->Tregcompp; | |
11562 | PL_regexecp = proto_perl->Tregexecp; | |
11563 | PL_regint_start = proto_perl->Tregint_start; | |
11564 | PL_regint_string = proto_perl->Tregint_string; | |
11565 | PL_regfree = proto_perl->Tregfree; | |
11566 | ||
11567 | PL_reginterp_cnt = 0; | |
11568 | PL_reg_starttry = 0; | |
11569 | ||
a2efc822 SC |
11570 | /* Pluggable optimizer */ |
11571 | PL_peepp = proto_perl->Tpeepp; | |
11572 | ||
081fc587 AB |
11573 | PL_stashcache = newHV(); |
11574 | ||
a0739874 DM |
11575 | if (!(flags & CLONEf_KEEP_PTR_TABLE)) { |
11576 | ptr_table_free(PL_ptr_table); | |
11577 | PL_ptr_table = NULL; | |
11578 | } | |
8cf8f3d1 | 11579 | |
f284b03f AMS |
11580 | /* Call the ->CLONE method, if it exists, for each of the stashes |
11581 | identified by sv_dup() above. | |
11582 | */ | |
d2d73c3e | 11583 | while(av_len(param->stashes) != -1) { |
53c1dcc0 AL |
11584 | HV* const stash = (HV*) av_shift(param->stashes); |
11585 | GV* const cloner = gv_fetchmethod_autoload(stash, "CLONE", 0); | |
f284b03f AMS |
11586 | if (cloner && GvCV(cloner)) { |
11587 | dSP; | |
11588 | ENTER; | |
11589 | SAVETMPS; | |
11590 | PUSHMARK(SP); | |
84bda14a | 11591 | XPUSHs(sv_2mortal(newSVhek(HvNAME_HEK(stash)))); |
f284b03f AMS |
11592 | PUTBACK; |
11593 | call_sv((SV*)GvCV(cloner), G_DISCARD); | |
11594 | FREETMPS; | |
11595 | LEAVE; | |
11596 | } | |
4a09accc | 11597 | } |
a0739874 | 11598 | |
dc507217 | 11599 | SvREFCNT_dec(param->stashes); |
dc507217 | 11600 | |
6d26897e DM |
11601 | /* orphaned? eg threads->new inside BEGIN or use */ |
11602 | if (PL_compcv && ! SvREFCNT(PL_compcv)) { | |
a3b680e6 | 11603 | (void)SvREFCNT_inc(PL_compcv); |
6d26897e DM |
11604 | SAVEFREESV(PL_compcv); |
11605 | } | |
11606 | ||
1d7c1841 | 11607 | return my_perl; |
1d7c1841 GS |
11608 | } |
11609 | ||
1d7c1841 | 11610 | #endif /* USE_ITHREADS */ |
a0ae6670 | 11611 | |
9f4817db | 11612 | /* |
ccfc67b7 JH |
11613 | =head1 Unicode Support |
11614 | ||
9f4817db JH |
11615 | =for apidoc sv_recode_to_utf8 |
11616 | ||
5d170f3a JH |
11617 | The encoding is assumed to be an Encode object, on entry the PV |
11618 | of the sv is assumed to be octets in that encoding, and the sv | |
11619 | will be converted into Unicode (and UTF-8). | |
9f4817db | 11620 | |
5d170f3a JH |
11621 | If the sv already is UTF-8 (or if it is not POK), or if the encoding |
11622 | is not a reference, nothing is done to the sv. If the encoding is not | |
1768d7eb JH |
11623 | an C<Encode::XS> Encoding object, bad things will happen. |
11624 | (See F<lib/encoding.pm> and L<Encode>). | |
9f4817db | 11625 | |
5d170f3a | 11626 | The PV of the sv is returned. |
9f4817db | 11627 | |
5d170f3a JH |
11628 | =cut */ |
11629 | ||
11630 | char * | |
11631 | Perl_sv_recode_to_utf8(pTHX_ SV *sv, SV *encoding) | |
11632 | { | |
27da23d5 | 11633 | dVAR; |
220e2d4e | 11634 | if (SvPOK(sv) && !SvUTF8(sv) && !IN_BYTES && SvROK(encoding)) { |
d0063567 DK |
11635 | SV *uni; |
11636 | STRLEN len; | |
93524f2b | 11637 | const char *s; |
d0063567 DK |
11638 | dSP; |
11639 | ENTER; | |
11640 | SAVETMPS; | |
220e2d4e | 11641 | save_re_context(); |
d0063567 DK |
11642 | PUSHMARK(sp); |
11643 | EXTEND(SP, 3); | |
11644 | XPUSHs(encoding); | |
11645 | XPUSHs(sv); | |
7a5fa8a2 | 11646 | /* |
f9893866 NIS |
11647 | NI-S 2002/07/09 |
11648 | Passing sv_yes is wrong - it needs to be or'ed set of constants | |
7a5fa8a2 | 11649 | for Encode::XS, while UTf-8 decode (currently) assumes a true value means |
f9893866 NIS |
11650 | remove converted chars from source. |
11651 | ||
11652 | Both will default the value - let them. | |
7a5fa8a2 | 11653 | |
d0063567 | 11654 | XPUSHs(&PL_sv_yes); |
f9893866 | 11655 | */ |
d0063567 DK |
11656 | PUTBACK; |
11657 | call_method("decode", G_SCALAR); | |
11658 | SPAGAIN; | |
11659 | uni = POPs; | |
11660 | PUTBACK; | |
93524f2b | 11661 | s = SvPV_const(uni, len); |
3f7c398e | 11662 | if (s != SvPVX_const(sv)) { |
d0063567 | 11663 | SvGROW(sv, len + 1); |
93524f2b | 11664 | Move(s, SvPVX(sv), len + 1, char); |
d0063567 | 11665 | SvCUR_set(sv, len); |
d0063567 DK |
11666 | } |
11667 | FREETMPS; | |
11668 | LEAVE; | |
d0063567 | 11669 | SvUTF8_on(sv); |
95899a2a | 11670 | return SvPVX(sv); |
f9893866 | 11671 | } |
95899a2a | 11672 | return SvPOKp(sv) ? SvPVX(sv) : NULL; |
9f4817db JH |
11673 | } |
11674 | ||
220e2d4e IH |
11675 | /* |
11676 | =for apidoc sv_cat_decode | |
11677 | ||
11678 | The encoding is assumed to be an Encode object, the PV of the ssv is | |
11679 | assumed to be octets in that encoding and decoding the input starts | |
11680 | from the position which (PV + *offset) pointed to. The dsv will be | |
11681 | concatenated the decoded UTF-8 string from ssv. Decoding will terminate | |
11682 | when the string tstr appears in decoding output or the input ends on | |
11683 | the PV of the ssv. The value which the offset points will be modified | |
11684 | to the last input position on the ssv. | |
68795e93 | 11685 | |
220e2d4e IH |
11686 | Returns TRUE if the terminator was found, else returns FALSE. |
11687 | ||
11688 | =cut */ | |
11689 | ||
11690 | bool | |
11691 | Perl_sv_cat_decode(pTHX_ SV *dsv, SV *encoding, | |
11692 | SV *ssv, int *offset, char *tstr, int tlen) | |
11693 | { | |
27da23d5 | 11694 | dVAR; |
a73e8557 | 11695 | bool ret = FALSE; |
220e2d4e | 11696 | if (SvPOK(ssv) && SvPOK(dsv) && SvROK(encoding) && offset) { |
220e2d4e IH |
11697 | SV *offsv; |
11698 | dSP; | |
11699 | ENTER; | |
11700 | SAVETMPS; | |
11701 | save_re_context(); | |
11702 | PUSHMARK(sp); | |
11703 | EXTEND(SP, 6); | |
11704 | XPUSHs(encoding); | |
11705 | XPUSHs(dsv); | |
11706 | XPUSHs(ssv); | |
11707 | XPUSHs(offsv = sv_2mortal(newSViv(*offset))); | |
11708 | XPUSHs(sv_2mortal(newSVpvn(tstr, tlen))); | |
11709 | PUTBACK; | |
11710 | call_method("cat_decode", G_SCALAR); | |
11711 | SPAGAIN; | |
11712 | ret = SvTRUE(TOPs); | |
11713 | *offset = SvIV(offsv); | |
11714 | PUTBACK; | |
11715 | FREETMPS; | |
11716 | LEAVE; | |
220e2d4e | 11717 | } |
a73e8557 JH |
11718 | else |
11719 | Perl_croak(aTHX_ "Invalid argument to sv_cat_decode"); | |
11720 | return ret; | |
220e2d4e | 11721 | } |
f9893866 | 11722 | |
241d1a3b NC |
11723 | /* |
11724 | * Local variables: | |
11725 | * c-indentation-style: bsd | |
11726 | * c-basic-offset: 4 | |
11727 | * indent-tabs-mode: t | |
11728 | * End: | |
11729 | * | |
37442d52 RGS |
11730 | * ex: set ts=8 sts=4 sw=4 noet: |
11731 | */ |