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, |
b5f8cc5c | 4 | * 2000, 2001, 2002, 2003, 2004, 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 | ||
765f542d NC |
50 | #ifdef PERL_COPY_ON_WRITE |
51 | #define SV_COW_NEXT_SV(sv) INT2PTR(SV *,SvUVX(sv)) | |
a29f6d03 | 52 | #define SV_COW_NEXT_SV_SET(current,next) SvUVX(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 | ||
66 | Normally, this allocation is done using arenas, which are approximately | |
67 | 1K chunks of memory parcelled up into N heads or bodies. The first slot | |
68 | in each arena is reserved, and is used to hold a link to the next arena. | |
69 | In the case of heads, the unused first slot also contains some flags and | |
70 | a note of the number of slots. Snaked through each arena chain is a | |
71 | linked list of free items; when this becomes empty, an extra arena is | |
72 | allocated and divided up into N items which are threaded into the free | |
73 | list. | |
645c22ef DM |
74 | |
75 | The following global variables are associated with arenas: | |
76 | ||
77 | PL_sv_arenaroot pointer to list of SV arenas | |
78 | PL_sv_root pointer to list of free SV structures | |
79 | ||
80 | PL_foo_arenaroot pointer to list of foo arenas, | |
81 | PL_foo_root pointer to list of free foo bodies | |
82 | ... for foo in xiv, xnv, xrv, xpv etc. | |
83 | ||
84 | Note that some of the larger and more rarely used body types (eg xpvio) | |
85 | are not allocated using arenas, but are instead just malloc()/free()ed as | |
86 | required. Also, if PURIFY is defined, arenas are abandoned altogether, | |
87 | with all items individually malloc()ed. In addition, a few SV heads are | |
88 | not allocated from an arena, but are instead directly created as static | |
89 | or auto variables, eg PL_sv_undef. | |
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 | ||
053fc874 GS |
168 | #define plant_SV(p) \ |
169 | STMT_START { \ | |
170 | SvANY(p) = (void *)PL_sv_root; \ | |
171 | SvFLAGS(p) = SVTYPEMASK; \ | |
172 | PL_sv_root = (p); \ | |
173 | --PL_sv_count; \ | |
174 | } STMT_END | |
a0d0e21e | 175 | |
fba3b22e | 176 | /* sv_mutex must be held while calling uproot_SV() */ |
053fc874 GS |
177 | #define uproot_SV(p) \ |
178 | STMT_START { \ | |
179 | (p) = PL_sv_root; \ | |
180 | PL_sv_root = (SV*)SvANY(p); \ | |
181 | ++PL_sv_count; \ | |
182 | } STMT_END | |
183 | ||
645c22ef DM |
184 | |
185 | /* new_SV(): return a new, empty SV head */ | |
186 | ||
eba0f806 DM |
187 | #ifdef DEBUG_LEAKING_SCALARS |
188 | /* provide a real function for a debugger to play with */ | |
189 | STATIC SV* | |
190 | S_new_SV(pTHX) | |
191 | { | |
192 | SV* sv; | |
193 | ||
194 | LOCK_SV_MUTEX; | |
195 | if (PL_sv_root) | |
196 | uproot_SV(sv); | |
197 | else | |
198 | sv = more_sv(); | |
199 | UNLOCK_SV_MUTEX; | |
200 | SvANY(sv) = 0; | |
201 | SvREFCNT(sv) = 1; | |
202 | SvFLAGS(sv) = 0; | |
203 | return sv; | |
204 | } | |
205 | # define new_SV(p) (p)=S_new_SV(aTHX) | |
206 | ||
207 | #else | |
208 | # define new_SV(p) \ | |
053fc874 GS |
209 | STMT_START { \ |
210 | LOCK_SV_MUTEX; \ | |
211 | if (PL_sv_root) \ | |
212 | uproot_SV(p); \ | |
213 | else \ | |
214 | (p) = more_sv(); \ | |
215 | UNLOCK_SV_MUTEX; \ | |
216 | SvANY(p) = 0; \ | |
217 | SvREFCNT(p) = 1; \ | |
218 | SvFLAGS(p) = 0; \ | |
219 | } STMT_END | |
eba0f806 | 220 | #endif |
463ee0b2 | 221 | |
645c22ef DM |
222 | |
223 | /* del_SV(): return an empty SV head to the free list */ | |
224 | ||
a0d0e21e | 225 | #ifdef DEBUGGING |
4561caa4 | 226 | |
053fc874 GS |
227 | #define del_SV(p) \ |
228 | STMT_START { \ | |
229 | LOCK_SV_MUTEX; \ | |
aea4f609 | 230 | if (DEBUG_D_TEST) \ |
053fc874 GS |
231 | del_sv(p); \ |
232 | else \ | |
233 | plant_SV(p); \ | |
234 | UNLOCK_SV_MUTEX; \ | |
235 | } STMT_END | |
a0d0e21e | 236 | |
76e3520e | 237 | STATIC void |
cea2e8a9 | 238 | S_del_sv(pTHX_ SV *p) |
463ee0b2 | 239 | { |
aea4f609 | 240 | if (DEBUG_D_TEST) { |
4633a7c4 | 241 | SV* sva; |
a0d0e21e LW |
242 | SV* sv; |
243 | SV* svend; | |
244 | int ok = 0; | |
3280af22 | 245 | for (sva = PL_sv_arenaroot; sva; sva = (SV *) SvANY(sva)) { |
4633a7c4 LW |
246 | sv = sva + 1; |
247 | svend = &sva[SvREFCNT(sva)]; | |
a0d0e21e LW |
248 | if (p >= sv && p < svend) |
249 | ok = 1; | |
250 | } | |
251 | if (!ok) { | |
0453d815 | 252 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 253 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
472d47bc SB |
254 | "Attempt to free non-arena SV: 0x%"UVxf |
255 | pTHX__FORMAT, PTR2UV(p) pTHX__VALUE); | |
a0d0e21e LW |
256 | return; |
257 | } | |
258 | } | |
4561caa4 | 259 | plant_SV(p); |
463ee0b2 | 260 | } |
a0d0e21e | 261 | |
4561caa4 CS |
262 | #else /* ! DEBUGGING */ |
263 | ||
264 | #define del_SV(p) plant_SV(p) | |
265 | ||
266 | #endif /* DEBUGGING */ | |
463ee0b2 | 267 | |
645c22ef DM |
268 | |
269 | /* | |
ccfc67b7 JH |
270 | =head1 SV Manipulation Functions |
271 | ||
645c22ef DM |
272 | =for apidoc sv_add_arena |
273 | ||
274 | Given a chunk of memory, link it to the head of the list of arenas, | |
275 | and split it into a list of free SVs. | |
276 | ||
277 | =cut | |
278 | */ | |
279 | ||
4633a7c4 | 280 | void |
864dbfa3 | 281 | Perl_sv_add_arena(pTHX_ char *ptr, U32 size, U32 flags) |
463ee0b2 | 282 | { |
4633a7c4 | 283 | SV* sva = (SV*)ptr; |
463ee0b2 LW |
284 | register SV* sv; |
285 | register SV* svend; | |
4633a7c4 LW |
286 | |
287 | /* The first SV in an arena isn't an SV. */ | |
3280af22 | 288 | SvANY(sva) = (void *) PL_sv_arenaroot; /* ptr to next arena */ |
4633a7c4 LW |
289 | SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */ |
290 | SvFLAGS(sva) = flags; /* FAKE if not to be freed */ | |
291 | ||
3280af22 NIS |
292 | PL_sv_arenaroot = sva; |
293 | PL_sv_root = sva + 1; | |
4633a7c4 LW |
294 | |
295 | svend = &sva[SvREFCNT(sva) - 1]; | |
296 | sv = sva + 1; | |
463ee0b2 | 297 | while (sv < svend) { |
a0d0e21e | 298 | SvANY(sv) = (void *)(SV*)(sv + 1); |
978b032e | 299 | SvREFCNT(sv) = 0; |
8990e307 | 300 | SvFLAGS(sv) = SVTYPEMASK; |
463ee0b2 LW |
301 | sv++; |
302 | } | |
303 | SvANY(sv) = 0; | |
4633a7c4 LW |
304 | SvFLAGS(sv) = SVTYPEMASK; |
305 | } | |
306 | ||
645c22ef DM |
307 | /* make some more SVs by adding another arena */ |
308 | ||
fba3b22e | 309 | /* sv_mutex must be held while calling more_sv() */ |
76e3520e | 310 | STATIC SV* |
cea2e8a9 | 311 | S_more_sv(pTHX) |
4633a7c4 | 312 | { |
4561caa4 CS |
313 | register SV* sv; |
314 | ||
3280af22 NIS |
315 | if (PL_nice_chunk) { |
316 | sv_add_arena(PL_nice_chunk, PL_nice_chunk_size, 0); | |
317 | PL_nice_chunk = Nullch; | |
30ad99e7 | 318 | PL_nice_chunk_size = 0; |
c07a80fd | 319 | } |
1edc1566 | 320 | else { |
321 | char *chunk; /* must use New here to match call to */ | |
322 | New(704,chunk,1008,char); /* Safefree() in sv_free_arenas() */ | |
323 | sv_add_arena(chunk, 1008, 0); | |
324 | } | |
4561caa4 CS |
325 | uproot_SV(sv); |
326 | return sv; | |
463ee0b2 LW |
327 | } |
328 | ||
055972dc DM |
329 | /* visit(): call the named function for each non-free SV in the arenas |
330 | * whose flags field matches the flags/mask args. */ | |
645c22ef | 331 | |
5226ed68 | 332 | STATIC I32 |
055972dc | 333 | S_visit(pTHX_ SVFUNC_t f, U32 flags, U32 mask) |
8990e307 | 334 | { |
4633a7c4 | 335 | SV* sva; |
8990e307 LW |
336 | SV* sv; |
337 | register SV* svend; | |
5226ed68 | 338 | I32 visited = 0; |
8990e307 | 339 | |
3280af22 | 340 | for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) { |
4633a7c4 | 341 | svend = &sva[SvREFCNT(sva)]; |
4561caa4 | 342 | for (sv = sva + 1; sv < svend; ++sv) { |
055972dc DM |
343 | if (SvTYPE(sv) != SVTYPEMASK |
344 | && (sv->sv_flags & mask) == flags | |
345 | && SvREFCNT(sv)) | |
346 | { | |
acfe0abc | 347 | (FCALL)(aTHX_ sv); |
5226ed68 JH |
348 | ++visited; |
349 | } | |
8990e307 LW |
350 | } |
351 | } | |
5226ed68 | 352 | return visited; |
8990e307 LW |
353 | } |
354 | ||
758a08c3 JH |
355 | #ifdef DEBUGGING |
356 | ||
645c22ef DM |
357 | /* called by sv_report_used() for each live SV */ |
358 | ||
359 | static void | |
acfe0abc | 360 | do_report_used(pTHX_ SV *sv) |
645c22ef DM |
361 | { |
362 | if (SvTYPE(sv) != SVTYPEMASK) { | |
363 | PerlIO_printf(Perl_debug_log, "****\n"); | |
364 | sv_dump(sv); | |
365 | } | |
366 | } | |
758a08c3 | 367 | #endif |
645c22ef DM |
368 | |
369 | /* | |
370 | =for apidoc sv_report_used | |
371 | ||
372 | Dump the contents of all SVs not yet freed. (Debugging aid). | |
373 | ||
374 | =cut | |
375 | */ | |
376 | ||
8990e307 | 377 | void |
864dbfa3 | 378 | Perl_sv_report_used(pTHX) |
4561caa4 | 379 | { |
ff270d3a | 380 | #ifdef DEBUGGING |
055972dc | 381 | visit(do_report_used, 0, 0); |
ff270d3a | 382 | #endif |
4561caa4 CS |
383 | } |
384 | ||
645c22ef DM |
385 | /* called by sv_clean_objs() for each live SV */ |
386 | ||
387 | static void | |
acfe0abc | 388 | do_clean_objs(pTHX_ SV *sv) |
645c22ef DM |
389 | { |
390 | SV* rv; | |
391 | ||
392 | if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) { | |
393 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv))); | |
394 | if (SvWEAKREF(sv)) { | |
395 | sv_del_backref(sv); | |
396 | SvWEAKREF_off(sv); | |
397 | SvRV(sv) = 0; | |
398 | } else { | |
399 | SvROK_off(sv); | |
400 | SvRV(sv) = 0; | |
401 | SvREFCNT_dec(rv); | |
402 | } | |
403 | } | |
404 | ||
405 | /* XXX Might want to check arrays, etc. */ | |
406 | } | |
407 | ||
408 | /* called by sv_clean_objs() for each live SV */ | |
409 | ||
410 | #ifndef DISABLE_DESTRUCTOR_KLUDGE | |
411 | static void | |
acfe0abc | 412 | do_clean_named_objs(pTHX_ SV *sv) |
645c22ef DM |
413 | { |
414 | if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) { | |
415 | if ( SvOBJECT(GvSV(sv)) || | |
416 | (GvAV(sv) && SvOBJECT(GvAV(sv))) || | |
417 | (GvHV(sv) && SvOBJECT(GvHV(sv))) || | |
418 | (GvIO(sv) && SvOBJECT(GvIO(sv))) || | |
419 | (GvCV(sv) && SvOBJECT(GvCV(sv))) ) | |
420 | { | |
421 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv))); | |
ec5f3c78 | 422 | SvFLAGS(sv) |= SVf_BREAK; |
645c22ef DM |
423 | SvREFCNT_dec(sv); |
424 | } | |
425 | } | |
426 | } | |
427 | #endif | |
428 | ||
429 | /* | |
430 | =for apidoc sv_clean_objs | |
431 | ||
432 | Attempt to destroy all objects not yet freed | |
433 | ||
434 | =cut | |
435 | */ | |
436 | ||
4561caa4 | 437 | void |
864dbfa3 | 438 | Perl_sv_clean_objs(pTHX) |
4561caa4 | 439 | { |
3280af22 | 440 | PL_in_clean_objs = TRUE; |
055972dc | 441 | visit(do_clean_objs, SVf_ROK, SVf_ROK); |
4561caa4 | 442 | #ifndef DISABLE_DESTRUCTOR_KLUDGE |
2d0f3c12 | 443 | /* some barnacles may yet remain, clinging to typeglobs */ |
055972dc | 444 | visit(do_clean_named_objs, SVt_PVGV, SVTYPEMASK); |
4561caa4 | 445 | #endif |
3280af22 | 446 | PL_in_clean_objs = FALSE; |
4561caa4 CS |
447 | } |
448 | ||
645c22ef DM |
449 | /* called by sv_clean_all() for each live SV */ |
450 | ||
451 | static void | |
acfe0abc | 452 | do_clean_all(pTHX_ SV *sv) |
645c22ef DM |
453 | { |
454 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) )); | |
455 | SvFLAGS(sv) |= SVf_BREAK; | |
0e705b3b DM |
456 | if (PL_comppad == (AV*)sv) { |
457 | PL_comppad = Nullav; | |
458 | PL_curpad = Null(SV**); | |
459 | } | |
645c22ef DM |
460 | SvREFCNT_dec(sv); |
461 | } | |
462 | ||
463 | /* | |
464 | =for apidoc sv_clean_all | |
465 | ||
466 | Decrement the refcnt of each remaining SV, possibly triggering a | |
467 | cleanup. This function may have to be called multiple times to free | |
ff276b08 | 468 | SVs which are in complex self-referential hierarchies. |
645c22ef DM |
469 | |
470 | =cut | |
471 | */ | |
472 | ||
5226ed68 | 473 | I32 |
864dbfa3 | 474 | Perl_sv_clean_all(pTHX) |
8990e307 | 475 | { |
5226ed68 | 476 | I32 cleaned; |
3280af22 | 477 | PL_in_clean_all = TRUE; |
055972dc | 478 | cleaned = visit(do_clean_all, 0,0); |
3280af22 | 479 | PL_in_clean_all = FALSE; |
5226ed68 | 480 | return cleaned; |
8990e307 | 481 | } |
463ee0b2 | 482 | |
645c22ef DM |
483 | /* |
484 | =for apidoc sv_free_arenas | |
485 | ||
486 | Deallocate the memory used by all arenas. Note that all the individual SV | |
487 | heads and bodies within the arenas must already have been freed. | |
488 | ||
489 | =cut | |
490 | */ | |
491 | ||
4633a7c4 | 492 | void |
864dbfa3 | 493 | Perl_sv_free_arenas(pTHX) |
4633a7c4 LW |
494 | { |
495 | SV* sva; | |
496 | SV* svanext; | |
612f20c3 | 497 | XPV *arena, *arenanext; |
4633a7c4 LW |
498 | |
499 | /* Free arenas here, but be careful about fake ones. (We assume | |
500 | contiguity of the fake ones with the corresponding real ones.) */ | |
501 | ||
3280af22 | 502 | for (sva = PL_sv_arenaroot; sva; sva = svanext) { |
4633a7c4 LW |
503 | svanext = (SV*) SvANY(sva); |
504 | while (svanext && SvFAKE(svanext)) | |
505 | svanext = (SV*) SvANY(svanext); | |
506 | ||
507 | if (!SvFAKE(sva)) | |
1edc1566 | 508 | Safefree((void *)sva); |
4633a7c4 | 509 | } |
5f05dabc | 510 | |
612f20c3 GS |
511 | for (arena = PL_xiv_arenaroot; arena; arena = arenanext) { |
512 | arenanext = (XPV*)arena->xpv_pv; | |
513 | Safefree(arena); | |
514 | } | |
515 | PL_xiv_arenaroot = 0; | |
bf9cdc68 | 516 | PL_xiv_root = 0; |
612f20c3 GS |
517 | |
518 | for (arena = PL_xnv_arenaroot; arena; arena = arenanext) { | |
519 | arenanext = (XPV*)arena->xpv_pv; | |
520 | Safefree(arena); | |
521 | } | |
522 | PL_xnv_arenaroot = 0; | |
bf9cdc68 | 523 | PL_xnv_root = 0; |
612f20c3 GS |
524 | |
525 | for (arena = PL_xrv_arenaroot; arena; arena = arenanext) { | |
526 | arenanext = (XPV*)arena->xpv_pv; | |
527 | Safefree(arena); | |
528 | } | |
529 | PL_xrv_arenaroot = 0; | |
bf9cdc68 | 530 | PL_xrv_root = 0; |
612f20c3 GS |
531 | |
532 | for (arena = PL_xpv_arenaroot; arena; arena = arenanext) { | |
533 | arenanext = (XPV*)arena->xpv_pv; | |
534 | Safefree(arena); | |
535 | } | |
536 | PL_xpv_arenaroot = 0; | |
bf9cdc68 | 537 | PL_xpv_root = 0; |
612f20c3 GS |
538 | |
539 | for (arena = (XPV*)PL_xpviv_arenaroot; arena; arena = arenanext) { | |
540 | arenanext = (XPV*)arena->xpv_pv; | |
541 | Safefree(arena); | |
542 | } | |
543 | PL_xpviv_arenaroot = 0; | |
bf9cdc68 | 544 | PL_xpviv_root = 0; |
612f20c3 GS |
545 | |
546 | for (arena = (XPV*)PL_xpvnv_arenaroot; arena; arena = arenanext) { | |
547 | arenanext = (XPV*)arena->xpv_pv; | |
548 | Safefree(arena); | |
549 | } | |
550 | PL_xpvnv_arenaroot = 0; | |
bf9cdc68 | 551 | PL_xpvnv_root = 0; |
612f20c3 GS |
552 | |
553 | for (arena = (XPV*)PL_xpvcv_arenaroot; arena; arena = arenanext) { | |
554 | arenanext = (XPV*)arena->xpv_pv; | |
555 | Safefree(arena); | |
556 | } | |
557 | PL_xpvcv_arenaroot = 0; | |
bf9cdc68 | 558 | PL_xpvcv_root = 0; |
612f20c3 GS |
559 | |
560 | for (arena = (XPV*)PL_xpvav_arenaroot; arena; arena = arenanext) { | |
561 | arenanext = (XPV*)arena->xpv_pv; | |
562 | Safefree(arena); | |
563 | } | |
564 | PL_xpvav_arenaroot = 0; | |
bf9cdc68 | 565 | PL_xpvav_root = 0; |
612f20c3 GS |
566 | |
567 | for (arena = (XPV*)PL_xpvhv_arenaroot; arena; arena = arenanext) { | |
568 | arenanext = (XPV*)arena->xpv_pv; | |
569 | Safefree(arena); | |
570 | } | |
571 | PL_xpvhv_arenaroot = 0; | |
bf9cdc68 | 572 | PL_xpvhv_root = 0; |
612f20c3 GS |
573 | |
574 | for (arena = (XPV*)PL_xpvmg_arenaroot; arena; arena = arenanext) { | |
575 | arenanext = (XPV*)arena->xpv_pv; | |
576 | Safefree(arena); | |
577 | } | |
578 | PL_xpvmg_arenaroot = 0; | |
bf9cdc68 | 579 | PL_xpvmg_root = 0; |
612f20c3 GS |
580 | |
581 | for (arena = (XPV*)PL_xpvlv_arenaroot; arena; arena = arenanext) { | |
582 | arenanext = (XPV*)arena->xpv_pv; | |
583 | Safefree(arena); | |
584 | } | |
585 | PL_xpvlv_arenaroot = 0; | |
bf9cdc68 | 586 | PL_xpvlv_root = 0; |
612f20c3 GS |
587 | |
588 | for (arena = (XPV*)PL_xpvbm_arenaroot; arena; arena = arenanext) { | |
589 | arenanext = (XPV*)arena->xpv_pv; | |
590 | Safefree(arena); | |
591 | } | |
592 | PL_xpvbm_arenaroot = 0; | |
bf9cdc68 | 593 | PL_xpvbm_root = 0; |
612f20c3 GS |
594 | |
595 | for (arena = (XPV*)PL_he_arenaroot; arena; arena = arenanext) { | |
596 | arenanext = (XPV*)arena->xpv_pv; | |
597 | Safefree(arena); | |
598 | } | |
599 | PL_he_arenaroot = 0; | |
bf9cdc68 | 600 | PL_he_root = 0; |
612f20c3 | 601 | |
3280af22 NIS |
602 | if (PL_nice_chunk) |
603 | Safefree(PL_nice_chunk); | |
604 | PL_nice_chunk = Nullch; | |
605 | PL_nice_chunk_size = 0; | |
606 | PL_sv_arenaroot = 0; | |
607 | PL_sv_root = 0; | |
4633a7c4 LW |
608 | } |
609 | ||
29489e7c DM |
610 | /* --------------------------------------------------------------------- |
611 | * | |
612 | * support functions for report_uninit() | |
613 | */ | |
614 | ||
615 | /* the maxiumum size of array or hash where we will scan looking | |
616 | * for the undefined element that triggered the warning */ | |
617 | ||
618 | #define FUV_MAX_SEARCH_SIZE 1000 | |
619 | ||
620 | /* Look for an entry in the hash whose value has the same SV as val; | |
621 | * If so, return a mortal copy of the key. */ | |
622 | ||
623 | STATIC SV* | |
624 | S_find_hash_subscript(pTHX_ HV *hv, SV* val) | |
625 | { | |
626 | register HE **array; | |
627 | register HE *entry; | |
628 | I32 i; | |
629 | ||
630 | if (!hv || SvMAGICAL(hv) || !HvARRAY(hv) || | |
631 | (HvTOTALKEYS(hv) > FUV_MAX_SEARCH_SIZE)) | |
632 | return Nullsv; | |
633 | ||
634 | array = HvARRAY(hv); | |
635 | ||
636 | for (i=HvMAX(hv); i>0; i--) { | |
637 | for (entry = array[i]; entry; entry = HeNEXT(entry)) { | |
638 | if (HeVAL(entry) != val) | |
639 | continue; | |
640 | if ( HeVAL(entry) == &PL_sv_undef || | |
641 | HeVAL(entry) == &PL_sv_placeholder) | |
642 | continue; | |
643 | if (!HeKEY(entry)) | |
644 | return Nullsv; | |
645 | if (HeKLEN(entry) == HEf_SVKEY) | |
646 | return sv_mortalcopy(HeKEY_sv(entry)); | |
647 | return sv_2mortal(newSVpvn(HeKEY(entry), HeKLEN(entry))); | |
648 | } | |
649 | } | |
650 | return Nullsv; | |
651 | } | |
652 | ||
653 | /* Look for an entry in the array whose value has the same SV as val; | |
654 | * If so, return the index, otherwise return -1. */ | |
655 | ||
656 | STATIC I32 | |
657 | S_find_array_subscript(pTHX_ AV *av, SV* val) | |
658 | { | |
659 | SV** svp; | |
660 | I32 i; | |
661 | if (!av || SvMAGICAL(av) || !AvARRAY(av) || | |
662 | (AvFILLp(av) > FUV_MAX_SEARCH_SIZE)) | |
663 | return -1; | |
664 | ||
665 | svp = AvARRAY(av); | |
666 | for (i=AvFILLp(av); i>=0; i--) { | |
667 | if (svp[i] == val && svp[i] != &PL_sv_undef) | |
668 | return i; | |
669 | } | |
670 | return -1; | |
671 | } | |
672 | ||
673 | /* S_varname(): return the name of a variable, optionally with a subscript. | |
674 | * If gv is non-zero, use the name of that global, along with gvtype (one | |
675 | * of "$", "@", "%"); otherwise use the name of the lexical at pad offset | |
676 | * targ. Depending on the value of the subscript_type flag, return: | |
677 | */ | |
678 | ||
679 | #define FUV_SUBSCRIPT_NONE 1 /* "@foo" */ | |
680 | #define FUV_SUBSCRIPT_ARRAY 2 /* "$foo[aindex]" */ | |
681 | #define FUV_SUBSCRIPT_HASH 3 /* "$foo{keyname}" */ | |
682 | #define FUV_SUBSCRIPT_WITHIN 4 /* "within @foo" */ | |
683 | ||
684 | STATIC SV* | |
685 | S_varname(pTHX_ GV *gv, char *gvtype, PADOFFSET targ, | |
686 | SV* keyname, I32 aindex, int subscript_type) | |
687 | { | |
688 | AV *av; | |
689 | ||
690 | SV *sv, *name; | |
691 | ||
692 | name = sv_newmortal(); | |
693 | if (gv) { | |
694 | ||
695 | /* simulate gv_fullname4(), but add literal '^' for $^FOO names | |
696 | * XXX get rid of all this if gv_fullnameX() ever supports this | |
697 | * directly */ | |
698 | ||
699 | char *p; | |
700 | HV *hv = GvSTASH(gv); | |
701 | sv_setpv(name, gvtype); | |
702 | if (!hv) | |
703 | p = "???"; | |
704 | else if (!HvNAME(hv)) | |
705 | p = "__ANON__"; | |
706 | else | |
707 | p = HvNAME(hv); | |
708 | if (strNE(p, "main")) { | |
709 | sv_catpv(name,p); | |
710 | sv_catpvn(name,"::", 2); | |
711 | } | |
712 | if (GvNAMELEN(gv)>= 1 && | |
713 | ((unsigned int)*GvNAME(gv)) <= 26) | |
714 | { /* handle $^FOO */ | |
715 | Perl_sv_catpvf(aTHX_ name,"^%c", *GvNAME(gv) + 'A' - 1); | |
716 | sv_catpvn(name,GvNAME(gv)+1,GvNAMELEN(gv)-1); | |
717 | } | |
718 | else | |
719 | sv_catpvn(name,GvNAME(gv),GvNAMELEN(gv)); | |
720 | } | |
721 | else { | |
722 | U32 u; | |
723 | CV *cv = find_runcv(&u); | |
724 | if (!cv || !CvPADLIST(cv)) | |
725 | return Nullsv;; | |
726 | av = (AV*)(*av_fetch(CvPADLIST(cv), 0, FALSE)); | |
727 | sv = *av_fetch(av, targ, FALSE); | |
728 | /* SvLEN in a pad name is not to be trusted */ | |
729 | sv_setpv(name, SvPV_nolen(sv)); | |
730 | } | |
731 | ||
732 | if (subscript_type == FUV_SUBSCRIPT_HASH) { | |
733 | *SvPVX(name) = '$'; | |
734 | sv = NEWSV(0,0); | |
735 | Perl_sv_catpvf(aTHX_ name, "{%s}", | |
736 | pv_display(sv,SvPVX(keyname), SvCUR(keyname), 0, 32)); | |
737 | SvREFCNT_dec(sv); | |
738 | } | |
739 | else if (subscript_type == FUV_SUBSCRIPT_ARRAY) { | |
740 | *SvPVX(name) = '$'; | |
265a12b8 | 741 | Perl_sv_catpvf(aTHX_ name, "[%"IVdf"]", (IV)aindex); |
29489e7c DM |
742 | } |
743 | else if (subscript_type == FUV_SUBSCRIPT_WITHIN) | |
744 | sv_insert(name, 0, 0, "within ", 7); | |
745 | ||
746 | return name; | |
747 | } | |
748 | ||
749 | ||
750 | /* | |
751 | =for apidoc find_uninit_var | |
752 | ||
753 | Find the name of the undefined variable (if any) that caused the operator o | |
754 | to issue a "Use of uninitialized value" warning. | |
755 | If match is true, only return a name if it's value matches uninit_sv. | |
756 | So roughly speaking, if a unary operator (such as OP_COS) generates a | |
757 | warning, then following the direct child of the op may yield an | |
758 | OP_PADSV or OP_GV that gives the name of the undefined variable. On the | |
759 | other hand, with OP_ADD there are two branches to follow, so we only print | |
760 | the variable name if we get an exact match. | |
761 | ||
762 | The name is returned as a mortal SV. | |
763 | ||
764 | Assumes that PL_op is the op that originally triggered the error, and that | |
765 | PL_comppad/PL_curpad points to the currently executing pad. | |
766 | ||
767 | =cut | |
768 | */ | |
769 | ||
770 | STATIC SV * | |
771 | S_find_uninit_var(pTHX_ OP* obase, SV* uninit_sv, bool match) | |
772 | { | |
773 | SV *sv; | |
774 | AV *av; | |
775 | SV **svp; | |
776 | GV *gv; | |
777 | OP *o, *o2, *kid; | |
778 | ||
779 | if (!obase || (match && (!uninit_sv || uninit_sv == &PL_sv_undef || | |
780 | uninit_sv == &PL_sv_placeholder))) | |
781 | return Nullsv; | |
782 | ||
783 | switch (obase->op_type) { | |
784 | ||
785 | case OP_RV2AV: | |
786 | case OP_RV2HV: | |
787 | case OP_PADAV: | |
788 | case OP_PADHV: | |
789 | { | |
790 | bool pad = (obase->op_type == OP_PADAV || obase->op_type == OP_PADHV); | |
791 | bool hash = (obase->op_type == OP_PADHV || obase->op_type == OP_RV2HV); | |
792 | I32 index; | |
793 | SV *keysv; | |
794 | int subscript_type = FUV_SUBSCRIPT_WITHIN; | |
795 | ||
796 | if (pad) { /* @lex, %lex */ | |
797 | sv = PAD_SVl(obase->op_targ); | |
798 | gv = Nullgv; | |
799 | } | |
800 | else { | |
801 | if (cUNOPx(obase)->op_first->op_type == OP_GV) { | |
802 | /* @global, %global */ | |
803 | gv = cGVOPx_gv(cUNOPx(obase)->op_first); | |
804 | if (!gv) | |
805 | break; | |
806 | sv = hash ? (SV*)GvHV(gv): (SV*)GvAV(gv); | |
807 | } | |
808 | else /* @{expr}, %{expr} */ | |
809 | return find_uninit_var(cUNOPx(obase)->op_first, | |
810 | uninit_sv, match); | |
811 | } | |
812 | ||
813 | /* attempt to find a match within the aggregate */ | |
814 | if (hash) { | |
815 | keysv = S_find_hash_subscript(aTHX_ (HV*)sv, uninit_sv); | |
816 | if (keysv) | |
817 | subscript_type = FUV_SUBSCRIPT_HASH; | |
818 | } | |
819 | else { | |
820 | index = S_find_array_subscript(aTHX_ (AV*)sv, uninit_sv); | |
821 | if (index >= 0) | |
822 | subscript_type = FUV_SUBSCRIPT_ARRAY; | |
823 | } | |
824 | ||
825 | if (match && subscript_type == FUV_SUBSCRIPT_WITHIN) | |
826 | break; | |
827 | ||
828 | return S_varname(aTHX_ gv, hash ? "%" : "@", obase->op_targ, | |
829 | keysv, index, subscript_type); | |
830 | } | |
831 | ||
832 | case OP_PADSV: | |
833 | if (match && PAD_SVl(obase->op_targ) != uninit_sv) | |
834 | break; | |
835 | return S_varname(aTHX_ Nullgv, "$", obase->op_targ, | |
836 | Nullsv, 0, FUV_SUBSCRIPT_NONE); | |
837 | ||
838 | case OP_GVSV: | |
839 | gv = cGVOPx_gv(obase); | |
840 | if (!gv || (match && GvSV(gv) != uninit_sv)) | |
841 | break; | |
842 | return S_varname(aTHX_ gv, "$", 0, Nullsv, 0, FUV_SUBSCRIPT_NONE); | |
843 | ||
844 | case OP_AELEMFAST: | |
845 | if (obase->op_flags & OPf_SPECIAL) { /* lexical array */ | |
846 | if (match) { | |
847 | av = (AV*)PAD_SV(obase->op_targ); | |
848 | if (!av || SvRMAGICAL(av)) | |
849 | break; | |
850 | svp = av_fetch(av, (I32)obase->op_private, FALSE); | |
851 | if (!svp || *svp != uninit_sv) | |
852 | break; | |
853 | } | |
854 | return S_varname(aTHX_ Nullgv, "$", obase->op_targ, | |
855 | Nullsv, (I32)obase->op_private, FUV_SUBSCRIPT_ARRAY); | |
856 | } | |
857 | else { | |
858 | gv = cGVOPx_gv(obase); | |
859 | if (!gv) | |
860 | break; | |
861 | if (match) { | |
862 | av = GvAV(gv); | |
863 | if (!av || SvRMAGICAL(av)) | |
864 | break; | |
865 | svp = av_fetch(av, (I32)obase->op_private, FALSE); | |
866 | if (!svp || *svp != uninit_sv) | |
867 | break; | |
868 | } | |
869 | return S_varname(aTHX_ gv, "$", 0, | |
870 | Nullsv, (I32)obase->op_private, FUV_SUBSCRIPT_ARRAY); | |
871 | } | |
872 | break; | |
873 | ||
874 | case OP_EXISTS: | |
875 | o = cUNOPx(obase)->op_first; | |
876 | if (!o || o->op_type != OP_NULL || | |
877 | ! (o->op_targ == OP_AELEM || o->op_targ == OP_HELEM)) | |
878 | break; | |
879 | return find_uninit_var(cBINOPo->op_last, uninit_sv, match); | |
880 | ||
881 | case OP_AELEM: | |
882 | case OP_HELEM: | |
883 | if (PL_op == obase) | |
884 | /* $a[uninit_expr] or $h{uninit_expr} */ | |
885 | return find_uninit_var(cBINOPx(obase)->op_last, uninit_sv, match); | |
886 | ||
887 | gv = Nullgv; | |
888 | o = cBINOPx(obase)->op_first; | |
889 | kid = cBINOPx(obase)->op_last; | |
890 | ||
891 | /* get the av or hv, and optionally the gv */ | |
892 | sv = Nullsv; | |
893 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) { | |
894 | sv = PAD_SV(o->op_targ); | |
895 | } | |
896 | else if ((o->op_type == OP_RV2AV || o->op_type == OP_RV2HV) | |
897 | && cUNOPo->op_first->op_type == OP_GV) | |
898 | { | |
899 | gv = cGVOPx_gv(cUNOPo->op_first); | |
900 | if (!gv) | |
901 | break; | |
902 | sv = o->op_type == OP_RV2HV ? (SV*)GvHV(gv) : (SV*)GvAV(gv); | |
903 | } | |
904 | if (!sv) | |
905 | break; | |
906 | ||
907 | if (kid && kid->op_type == OP_CONST && SvOK(cSVOPx_sv(kid))) { | |
908 | /* index is constant */ | |
909 | if (match) { | |
910 | if (SvMAGICAL(sv)) | |
911 | break; | |
912 | if (obase->op_type == OP_HELEM) { | |
913 | HE* he = hv_fetch_ent((HV*)sv, cSVOPx_sv(kid), 0, 0); | |
914 | if (!he || HeVAL(he) != uninit_sv) | |
915 | break; | |
916 | } | |
917 | else { | |
918 | svp = av_fetch((AV*)sv, SvIV(cSVOPx_sv(kid)), FALSE); | |
919 | if (!svp || *svp != uninit_sv) | |
920 | break; | |
921 | } | |
922 | } | |
923 | if (obase->op_type == OP_HELEM) | |
924 | return S_varname(aTHX_ gv, "%", o->op_targ, | |
925 | cSVOPx_sv(kid), 0, FUV_SUBSCRIPT_HASH); | |
926 | else | |
927 | return S_varname(aTHX_ gv, "@", o->op_targ, Nullsv, | |
928 | SvIV(cSVOPx_sv(kid)), FUV_SUBSCRIPT_ARRAY); | |
929 | ; | |
930 | } | |
931 | else { | |
932 | /* index is an expression; | |
933 | * attempt to find a match within the aggregate */ | |
934 | if (obase->op_type == OP_HELEM) { | |
935 | SV *keysv = S_find_hash_subscript(aTHX_ (HV*)sv, uninit_sv); | |
936 | if (keysv) | |
937 | return S_varname(aTHX_ gv, "%", o->op_targ, | |
938 | keysv, 0, FUV_SUBSCRIPT_HASH); | |
939 | } | |
940 | else { | |
941 | I32 index = S_find_array_subscript(aTHX_ (AV*)sv, uninit_sv); | |
942 | if (index >= 0) | |
943 | return S_varname(aTHX_ gv, "@", o->op_targ, | |
944 | Nullsv, index, FUV_SUBSCRIPT_ARRAY); | |
945 | } | |
946 | if (match) | |
947 | break; | |
948 | return S_varname(aTHX_ gv, | |
949 | (o->op_type == OP_PADAV || o->op_type == OP_RV2AV) | |
950 | ? "@" : "%", | |
951 | o->op_targ, Nullsv, 0, FUV_SUBSCRIPT_WITHIN); | |
952 | } | |
953 | ||
954 | break; | |
955 | ||
956 | case OP_AASSIGN: | |
957 | /* only examine RHS */ | |
958 | return find_uninit_var(cBINOPx(obase)->op_first, uninit_sv, match); | |
959 | ||
960 | case OP_OPEN: | |
961 | o = cUNOPx(obase)->op_first; | |
962 | if (o->op_type == OP_PUSHMARK) | |
963 | o = o->op_sibling; | |
964 | ||
965 | if (!o->op_sibling) { | |
966 | /* one-arg version of open is highly magical */ | |
967 | ||
968 | if (o->op_type == OP_GV) { /* open FOO; */ | |
969 | gv = cGVOPx_gv(o); | |
970 | if (match && GvSV(gv) != uninit_sv) | |
971 | break; | |
972 | return S_varname(aTHX_ gv, "$", 0, | |
973 | Nullsv, 0, FUV_SUBSCRIPT_NONE); | |
974 | } | |
975 | /* other possibilities not handled are: | |
976 | * open $x; or open my $x; should return '${*$x}' | |
977 | * open expr; should return '$'.expr ideally | |
978 | */ | |
979 | break; | |
980 | } | |
981 | goto do_op; | |
982 | ||
983 | /* ops where $_ may be an implicit arg */ | |
984 | case OP_TRANS: | |
985 | case OP_SUBST: | |
986 | case OP_MATCH: | |
987 | if ( !(obase->op_flags & OPf_STACKED)) { | |
988 | if (uninit_sv == ((obase->op_private & OPpTARGET_MY) | |
989 | ? PAD_SVl(obase->op_targ) | |
990 | : DEFSV)) | |
991 | { | |
992 | sv = sv_newmortal(); | |
993 | sv_setpv(sv, "$_"); | |
994 | return sv; | |
995 | } | |
996 | } | |
997 | goto do_op; | |
998 | ||
999 | case OP_PRTF: | |
1000 | case OP_PRINT: | |
1001 | /* skip filehandle as it can't produce 'undef' warning */ | |
1002 | o = cUNOPx(obase)->op_first; | |
1003 | if ((obase->op_flags & OPf_STACKED) && o->op_type == OP_PUSHMARK) | |
1004 | o = o->op_sibling->op_sibling; | |
1005 | goto do_op2; | |
1006 | ||
1007 | ||
e21bd382 | 1008 | case OP_RV2SV: |
29489e7c DM |
1009 | case OP_CUSTOM: |
1010 | case OP_ENTERSUB: | |
1011 | match = 1; /* XS or custom code could trigger random warnings */ | |
1012 | goto do_op; | |
1013 | ||
1014 | case OP_SCHOMP: | |
1015 | case OP_CHOMP: | |
1016 | if (SvROK(PL_rs) && uninit_sv == SvRV(PL_rs)) | |
1017 | return sv_2mortal(newSVpv("${$/}", 0)); | |
1018 | /* FALL THROUGH */ | |
1019 | ||
1020 | default: | |
1021 | do_op: | |
1022 | if (!(obase->op_flags & OPf_KIDS)) | |
1023 | break; | |
1024 | o = cUNOPx(obase)->op_first; | |
1025 | ||
1026 | do_op2: | |
1027 | if (!o) | |
1028 | break; | |
1029 | ||
1030 | /* if all except one arg are constant, or have no side-effects, | |
1031 | * or are optimized away, then it's unambiguous */ | |
1032 | o2 = Nullop; | |
1033 | for (kid=o; kid; kid = kid->op_sibling) { | |
1034 | if (kid && | |
1035 | ( (kid->op_type == OP_CONST && SvOK(cSVOPx_sv(kid))) | |
1036 | || (kid->op_type == OP_NULL && ! (kid->op_flags & OPf_KIDS)) | |
1037 | || (kid->op_type == OP_PUSHMARK) | |
1038 | ) | |
1039 | ) | |
1040 | continue; | |
1041 | if (o2) { /* more than one found */ | |
1042 | o2 = Nullop; | |
1043 | break; | |
1044 | } | |
1045 | o2 = kid; | |
1046 | } | |
1047 | if (o2) | |
1048 | return find_uninit_var(o2, uninit_sv, match); | |
1049 | ||
1050 | /* scan all args */ | |
1051 | while (o) { | |
1052 | sv = find_uninit_var(o, uninit_sv, 1); | |
1053 | if (sv) | |
1054 | return sv; | |
1055 | o = o->op_sibling; | |
1056 | } | |
1057 | break; | |
1058 | } | |
1059 | return Nullsv; | |
1060 | } | |
1061 | ||
1062 | ||
645c22ef DM |
1063 | /* |
1064 | =for apidoc report_uninit | |
1065 | ||
1066 | Print appropriate "Use of uninitialized variable" warning | |
1067 | ||
1068 | =cut | |
1069 | */ | |
1070 | ||
1d7c1841 | 1071 | void |
29489e7c DM |
1072 | Perl_report_uninit(pTHX_ SV* uninit_sv) |
1073 | { | |
1074 | if (PL_op) { | |
1075 | SV* varname; | |
1076 | if (uninit_sv) { | |
1077 | varname = find_uninit_var(PL_op, uninit_sv,0); | |
1078 | if (varname) | |
1079 | sv_insert(varname, 0, 0, " ", 1); | |
1080 | } | |
9014280d | 1081 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, |
29489e7c DM |
1082 | varname ? SvPV_nolen(varname) : "", |
1083 | " in ", OP_DESC(PL_op)); | |
1084 | } | |
1d7c1841 | 1085 | else |
29489e7c DM |
1086 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, |
1087 | "", "", ""); | |
1d7c1841 GS |
1088 | } |
1089 | ||
645c22ef DM |
1090 | /* grab a new IV body from the free list, allocating more if necessary */ |
1091 | ||
76e3520e | 1092 | STATIC XPVIV* |
cea2e8a9 | 1093 | S_new_xiv(pTHX) |
463ee0b2 | 1094 | { |
ea7c11a3 | 1095 | IV* xiv; |
cbe51380 GS |
1096 | LOCK_SV_MUTEX; |
1097 | if (!PL_xiv_root) | |
1098 | more_xiv(); | |
1099 | xiv = PL_xiv_root; | |
1100 | /* | |
1101 | * See comment in more_xiv() -- RAM. | |
1102 | */ | |
1103 | PL_xiv_root = *(IV**)xiv; | |
1104 | UNLOCK_SV_MUTEX; | |
1105 | return (XPVIV*)((char*)xiv - STRUCT_OFFSET(XPVIV, xiv_iv)); | |
463ee0b2 LW |
1106 | } |
1107 | ||
645c22ef DM |
1108 | /* return an IV body to the free list */ |
1109 | ||
76e3520e | 1110 | STATIC void |
cea2e8a9 | 1111 | S_del_xiv(pTHX_ XPVIV *p) |
463ee0b2 | 1112 | { |
23e6a22f | 1113 | IV* xiv = (IV*)((char*)(p) + STRUCT_OFFSET(XPVIV, xiv_iv)); |
cbe51380 | 1114 | LOCK_SV_MUTEX; |
3280af22 NIS |
1115 | *(IV**)xiv = PL_xiv_root; |
1116 | PL_xiv_root = xiv; | |
cbe51380 | 1117 | UNLOCK_SV_MUTEX; |
463ee0b2 LW |
1118 | } |
1119 | ||
645c22ef DM |
1120 | /* allocate another arena's worth of IV bodies */ |
1121 | ||
cbe51380 | 1122 | STATIC void |
cea2e8a9 | 1123 | S_more_xiv(pTHX) |
463ee0b2 | 1124 | { |
ea7c11a3 SM |
1125 | register IV* xiv; |
1126 | register IV* xivend; | |
8c52afec IZ |
1127 | XPV* ptr; |
1128 | New(705, ptr, 1008/sizeof(XPV), XPV); | |
645c22ef | 1129 | ptr->xpv_pv = (char*)PL_xiv_arenaroot; /* linked list of xiv arenas */ |
3280af22 | 1130 | PL_xiv_arenaroot = ptr; /* to keep Purify happy */ |
a0d0e21e | 1131 | |
ea7c11a3 SM |
1132 | xiv = (IV*) ptr; |
1133 | xivend = &xiv[1008 / sizeof(IV) - 1]; | |
645c22ef | 1134 | xiv += (sizeof(XPV) - 1) / sizeof(IV) + 1; /* fudge by size of XPV */ |
3280af22 | 1135 | PL_xiv_root = xiv; |
463ee0b2 | 1136 | while (xiv < xivend) { |
ea7c11a3 | 1137 | *(IV**)xiv = (IV *)(xiv + 1); |
463ee0b2 LW |
1138 | xiv++; |
1139 | } | |
ea7c11a3 | 1140 | *(IV**)xiv = 0; |
463ee0b2 LW |
1141 | } |
1142 | ||
645c22ef DM |
1143 | /* grab a new NV body from the free list, allocating more if necessary */ |
1144 | ||
76e3520e | 1145 | STATIC XPVNV* |
cea2e8a9 | 1146 | S_new_xnv(pTHX) |
463ee0b2 | 1147 | { |
65202027 | 1148 | NV* xnv; |
cbe51380 GS |
1149 | LOCK_SV_MUTEX; |
1150 | if (!PL_xnv_root) | |
1151 | more_xnv(); | |
1152 | xnv = PL_xnv_root; | |
65202027 | 1153 | PL_xnv_root = *(NV**)xnv; |
cbe51380 GS |
1154 | UNLOCK_SV_MUTEX; |
1155 | return (XPVNV*)((char*)xnv - STRUCT_OFFSET(XPVNV, xnv_nv)); | |
463ee0b2 LW |
1156 | } |
1157 | ||
645c22ef DM |
1158 | /* return an NV body to the free list */ |
1159 | ||
76e3520e | 1160 | STATIC void |
cea2e8a9 | 1161 | S_del_xnv(pTHX_ XPVNV *p) |
463ee0b2 | 1162 | { |
65202027 | 1163 | NV* xnv = (NV*)((char*)(p) + STRUCT_OFFSET(XPVNV, xnv_nv)); |
cbe51380 | 1164 | LOCK_SV_MUTEX; |
65202027 | 1165 | *(NV**)xnv = PL_xnv_root; |
3280af22 | 1166 | PL_xnv_root = xnv; |
cbe51380 | 1167 | UNLOCK_SV_MUTEX; |
463ee0b2 LW |
1168 | } |
1169 | ||
645c22ef DM |
1170 | /* allocate another arena's worth of NV bodies */ |
1171 | ||
cbe51380 | 1172 | STATIC void |
cea2e8a9 | 1173 | S_more_xnv(pTHX) |
463ee0b2 | 1174 | { |
65202027 DS |
1175 | register NV* xnv; |
1176 | register NV* xnvend; | |
612f20c3 GS |
1177 | XPV *ptr; |
1178 | New(711, ptr, 1008/sizeof(XPV), XPV); | |
1179 | ptr->xpv_pv = (char*)PL_xnv_arenaroot; | |
1180 | PL_xnv_arenaroot = ptr; | |
1181 | ||
1182 | xnv = (NV*) ptr; | |
65202027 DS |
1183 | xnvend = &xnv[1008 / sizeof(NV) - 1]; |
1184 | xnv += (sizeof(XPVIV) - 1) / sizeof(NV) + 1; /* fudge by sizeof XPVIV */ | |
3280af22 | 1185 | PL_xnv_root = xnv; |
463ee0b2 | 1186 | while (xnv < xnvend) { |
65202027 | 1187 | *(NV**)xnv = (NV*)(xnv + 1); |
463ee0b2 LW |
1188 | xnv++; |
1189 | } | |
65202027 | 1190 | *(NV**)xnv = 0; |
463ee0b2 LW |
1191 | } |
1192 | ||
645c22ef DM |
1193 | /* grab a new struct xrv from the free list, allocating more if necessary */ |
1194 | ||
76e3520e | 1195 | STATIC XRV* |
cea2e8a9 | 1196 | S_new_xrv(pTHX) |
ed6116ce LW |
1197 | { |
1198 | XRV* xrv; | |
cbe51380 GS |
1199 | LOCK_SV_MUTEX; |
1200 | if (!PL_xrv_root) | |
1201 | more_xrv(); | |
1202 | xrv = PL_xrv_root; | |
1203 | PL_xrv_root = (XRV*)xrv->xrv_rv; | |
1204 | UNLOCK_SV_MUTEX; | |
1205 | return xrv; | |
ed6116ce LW |
1206 | } |
1207 | ||
645c22ef DM |
1208 | /* return a struct xrv to the free list */ |
1209 | ||
76e3520e | 1210 | STATIC void |
cea2e8a9 | 1211 | S_del_xrv(pTHX_ XRV *p) |
ed6116ce | 1212 | { |
cbe51380 | 1213 | LOCK_SV_MUTEX; |
3280af22 NIS |
1214 | p->xrv_rv = (SV*)PL_xrv_root; |
1215 | PL_xrv_root = p; | |
cbe51380 | 1216 | UNLOCK_SV_MUTEX; |
ed6116ce LW |
1217 | } |
1218 | ||
645c22ef DM |
1219 | /* allocate another arena's worth of struct xrv */ |
1220 | ||
cbe51380 | 1221 | STATIC void |
cea2e8a9 | 1222 | S_more_xrv(pTHX) |
ed6116ce | 1223 | { |
ed6116ce LW |
1224 | register XRV* xrv; |
1225 | register XRV* xrvend; | |
612f20c3 GS |
1226 | XPV *ptr; |
1227 | New(712, ptr, 1008/sizeof(XPV), XPV); | |
1228 | ptr->xpv_pv = (char*)PL_xrv_arenaroot; | |
1229 | PL_xrv_arenaroot = ptr; | |
1230 | ||
1231 | xrv = (XRV*) ptr; | |
ed6116ce | 1232 | xrvend = &xrv[1008 / sizeof(XRV) - 1]; |
612f20c3 GS |
1233 | xrv += (sizeof(XPV) - 1) / sizeof(XRV) + 1; |
1234 | PL_xrv_root = xrv; | |
ed6116ce LW |
1235 | while (xrv < xrvend) { |
1236 | xrv->xrv_rv = (SV*)(xrv + 1); | |
1237 | xrv++; | |
1238 | } | |
1239 | xrv->xrv_rv = 0; | |
ed6116ce LW |
1240 | } |
1241 | ||
645c22ef DM |
1242 | /* grab a new struct xpv from the free list, allocating more if necessary */ |
1243 | ||
76e3520e | 1244 | STATIC XPV* |
cea2e8a9 | 1245 | S_new_xpv(pTHX) |
463ee0b2 LW |
1246 | { |
1247 | XPV* xpv; | |
cbe51380 GS |
1248 | LOCK_SV_MUTEX; |
1249 | if (!PL_xpv_root) | |
1250 | more_xpv(); | |
1251 | xpv = PL_xpv_root; | |
1252 | PL_xpv_root = (XPV*)xpv->xpv_pv; | |
1253 | UNLOCK_SV_MUTEX; | |
1254 | return xpv; | |
463ee0b2 LW |
1255 | } |
1256 | ||
645c22ef DM |
1257 | /* return a struct xpv to the free list */ |
1258 | ||
76e3520e | 1259 | STATIC void |
cea2e8a9 | 1260 | S_del_xpv(pTHX_ XPV *p) |
463ee0b2 | 1261 | { |
cbe51380 | 1262 | LOCK_SV_MUTEX; |
3280af22 NIS |
1263 | p->xpv_pv = (char*)PL_xpv_root; |
1264 | PL_xpv_root = p; | |
cbe51380 | 1265 | UNLOCK_SV_MUTEX; |
463ee0b2 LW |
1266 | } |
1267 | ||
645c22ef DM |
1268 | /* allocate another arena's worth of struct xpv */ |
1269 | ||
cbe51380 | 1270 | STATIC void |
cea2e8a9 | 1271 | S_more_xpv(pTHX) |
463ee0b2 | 1272 | { |
463ee0b2 LW |
1273 | register XPV* xpv; |
1274 | register XPV* xpvend; | |
612f20c3 GS |
1275 | New(713, xpv, 1008/sizeof(XPV), XPV); |
1276 | xpv->xpv_pv = (char*)PL_xpv_arenaroot; | |
1277 | PL_xpv_arenaroot = xpv; | |
1278 | ||
463ee0b2 | 1279 | xpvend = &xpv[1008 / sizeof(XPV) - 1]; |
612f20c3 | 1280 | PL_xpv_root = ++xpv; |
463ee0b2 LW |
1281 | while (xpv < xpvend) { |
1282 | xpv->xpv_pv = (char*)(xpv + 1); | |
1283 | xpv++; | |
1284 | } | |
1285 | xpv->xpv_pv = 0; | |
463ee0b2 LW |
1286 | } |
1287 | ||
645c22ef DM |
1288 | /* grab a new struct xpviv from the free list, allocating more if necessary */ |
1289 | ||
932e9ff9 VB |
1290 | STATIC XPVIV* |
1291 | S_new_xpviv(pTHX) | |
1292 | { | |
1293 | XPVIV* xpviv; | |
1294 | LOCK_SV_MUTEX; | |
1295 | if (!PL_xpviv_root) | |
1296 | more_xpviv(); | |
1297 | xpviv = PL_xpviv_root; | |
1298 | PL_xpviv_root = (XPVIV*)xpviv->xpv_pv; | |
1299 | UNLOCK_SV_MUTEX; | |
1300 | return xpviv; | |
1301 | } | |
1302 | ||
645c22ef DM |
1303 | /* return a struct xpviv to the free list */ |
1304 | ||
932e9ff9 VB |
1305 | STATIC void |
1306 | S_del_xpviv(pTHX_ XPVIV *p) | |
1307 | { | |
1308 | LOCK_SV_MUTEX; | |
1309 | p->xpv_pv = (char*)PL_xpviv_root; | |
1310 | PL_xpviv_root = p; | |
1311 | UNLOCK_SV_MUTEX; | |
1312 | } | |
1313 | ||
645c22ef DM |
1314 | /* allocate another arena's worth of struct xpviv */ |
1315 | ||
932e9ff9 VB |
1316 | STATIC void |
1317 | S_more_xpviv(pTHX) | |
1318 | { | |
1319 | register XPVIV* xpviv; | |
1320 | register XPVIV* xpvivend; | |
612f20c3 GS |
1321 | New(714, xpviv, 1008/sizeof(XPVIV), XPVIV); |
1322 | xpviv->xpv_pv = (char*)PL_xpviv_arenaroot; | |
1323 | PL_xpviv_arenaroot = xpviv; | |
1324 | ||
932e9ff9 | 1325 | xpvivend = &xpviv[1008 / sizeof(XPVIV) - 1]; |
612f20c3 | 1326 | PL_xpviv_root = ++xpviv; |
932e9ff9 VB |
1327 | while (xpviv < xpvivend) { |
1328 | xpviv->xpv_pv = (char*)(xpviv + 1); | |
1329 | xpviv++; | |
1330 | } | |
1331 | xpviv->xpv_pv = 0; | |
1332 | } | |
1333 | ||
645c22ef DM |
1334 | /* grab a new struct xpvnv from the free list, allocating more if necessary */ |
1335 | ||
932e9ff9 VB |
1336 | STATIC XPVNV* |
1337 | S_new_xpvnv(pTHX) | |
1338 | { | |
1339 | XPVNV* xpvnv; | |
1340 | LOCK_SV_MUTEX; | |
1341 | if (!PL_xpvnv_root) | |
1342 | more_xpvnv(); | |
1343 | xpvnv = PL_xpvnv_root; | |
1344 | PL_xpvnv_root = (XPVNV*)xpvnv->xpv_pv; | |
1345 | UNLOCK_SV_MUTEX; | |
1346 | return xpvnv; | |
1347 | } | |
1348 | ||
645c22ef DM |
1349 | /* return a struct xpvnv to the free list */ |
1350 | ||
932e9ff9 VB |
1351 | STATIC void |
1352 | S_del_xpvnv(pTHX_ XPVNV *p) | |
1353 | { | |
1354 | LOCK_SV_MUTEX; | |
1355 | p->xpv_pv = (char*)PL_xpvnv_root; | |
1356 | PL_xpvnv_root = p; | |
1357 | UNLOCK_SV_MUTEX; | |
1358 | } | |
1359 | ||
645c22ef DM |
1360 | /* allocate another arena's worth of struct xpvnv */ |
1361 | ||
932e9ff9 VB |
1362 | STATIC void |
1363 | S_more_xpvnv(pTHX) | |
1364 | { | |
1365 | register XPVNV* xpvnv; | |
1366 | register XPVNV* xpvnvend; | |
612f20c3 GS |
1367 | New(715, xpvnv, 1008/sizeof(XPVNV), XPVNV); |
1368 | xpvnv->xpv_pv = (char*)PL_xpvnv_arenaroot; | |
1369 | PL_xpvnv_arenaroot = xpvnv; | |
1370 | ||
932e9ff9 | 1371 | xpvnvend = &xpvnv[1008 / sizeof(XPVNV) - 1]; |
612f20c3 | 1372 | PL_xpvnv_root = ++xpvnv; |
932e9ff9 VB |
1373 | while (xpvnv < xpvnvend) { |
1374 | xpvnv->xpv_pv = (char*)(xpvnv + 1); | |
1375 | xpvnv++; | |
1376 | } | |
1377 | xpvnv->xpv_pv = 0; | |
1378 | } | |
1379 | ||
645c22ef DM |
1380 | /* grab a new struct xpvcv from the free list, allocating more if necessary */ |
1381 | ||
932e9ff9 VB |
1382 | STATIC XPVCV* |
1383 | S_new_xpvcv(pTHX) | |
1384 | { | |
1385 | XPVCV* xpvcv; | |
1386 | LOCK_SV_MUTEX; | |
1387 | if (!PL_xpvcv_root) | |
1388 | more_xpvcv(); | |
1389 | xpvcv = PL_xpvcv_root; | |
1390 | PL_xpvcv_root = (XPVCV*)xpvcv->xpv_pv; | |
1391 | UNLOCK_SV_MUTEX; | |
1392 | return xpvcv; | |
1393 | } | |
1394 | ||
645c22ef DM |
1395 | /* return a struct xpvcv to the free list */ |
1396 | ||
932e9ff9 VB |
1397 | STATIC void |
1398 | S_del_xpvcv(pTHX_ XPVCV *p) | |
1399 | { | |
1400 | LOCK_SV_MUTEX; | |
1401 | p->xpv_pv = (char*)PL_xpvcv_root; | |
1402 | PL_xpvcv_root = p; | |
1403 | UNLOCK_SV_MUTEX; | |
1404 | } | |
1405 | ||
645c22ef DM |
1406 | /* allocate another arena's worth of struct xpvcv */ |
1407 | ||
932e9ff9 VB |
1408 | STATIC void |
1409 | S_more_xpvcv(pTHX) | |
1410 | { | |
1411 | register XPVCV* xpvcv; | |
1412 | register XPVCV* xpvcvend; | |
612f20c3 GS |
1413 | New(716, xpvcv, 1008/sizeof(XPVCV), XPVCV); |
1414 | xpvcv->xpv_pv = (char*)PL_xpvcv_arenaroot; | |
1415 | PL_xpvcv_arenaroot = xpvcv; | |
1416 | ||
932e9ff9 | 1417 | xpvcvend = &xpvcv[1008 / sizeof(XPVCV) - 1]; |
612f20c3 | 1418 | PL_xpvcv_root = ++xpvcv; |
932e9ff9 VB |
1419 | while (xpvcv < xpvcvend) { |
1420 | xpvcv->xpv_pv = (char*)(xpvcv + 1); | |
1421 | xpvcv++; | |
1422 | } | |
1423 | xpvcv->xpv_pv = 0; | |
1424 | } | |
1425 | ||
645c22ef DM |
1426 | /* grab a new struct xpvav from the free list, allocating more if necessary */ |
1427 | ||
932e9ff9 VB |
1428 | STATIC XPVAV* |
1429 | S_new_xpvav(pTHX) | |
1430 | { | |
1431 | XPVAV* xpvav; | |
1432 | LOCK_SV_MUTEX; | |
1433 | if (!PL_xpvav_root) | |
1434 | more_xpvav(); | |
1435 | xpvav = PL_xpvav_root; | |
1436 | PL_xpvav_root = (XPVAV*)xpvav->xav_array; | |
1437 | UNLOCK_SV_MUTEX; | |
1438 | return xpvav; | |
1439 | } | |
1440 | ||
645c22ef DM |
1441 | /* return a struct xpvav to the free list */ |
1442 | ||
932e9ff9 VB |
1443 | STATIC void |
1444 | S_del_xpvav(pTHX_ XPVAV *p) | |
1445 | { | |
1446 | LOCK_SV_MUTEX; | |
1447 | p->xav_array = (char*)PL_xpvav_root; | |
1448 | PL_xpvav_root = p; | |
1449 | UNLOCK_SV_MUTEX; | |
1450 | } | |
1451 | ||
645c22ef DM |
1452 | /* allocate another arena's worth of struct xpvav */ |
1453 | ||
932e9ff9 VB |
1454 | STATIC void |
1455 | S_more_xpvav(pTHX) | |
1456 | { | |
1457 | register XPVAV* xpvav; | |
1458 | register XPVAV* xpvavend; | |
612f20c3 GS |
1459 | New(717, xpvav, 1008/sizeof(XPVAV), XPVAV); |
1460 | xpvav->xav_array = (char*)PL_xpvav_arenaroot; | |
1461 | PL_xpvav_arenaroot = xpvav; | |
1462 | ||
932e9ff9 | 1463 | xpvavend = &xpvav[1008 / sizeof(XPVAV) - 1]; |
612f20c3 | 1464 | PL_xpvav_root = ++xpvav; |
932e9ff9 VB |
1465 | while (xpvav < xpvavend) { |
1466 | xpvav->xav_array = (char*)(xpvav + 1); | |
1467 | xpvav++; | |
1468 | } | |
1469 | xpvav->xav_array = 0; | |
1470 | } | |
1471 | ||
645c22ef DM |
1472 | /* grab a new struct xpvhv from the free list, allocating more if necessary */ |
1473 | ||
932e9ff9 VB |
1474 | STATIC XPVHV* |
1475 | S_new_xpvhv(pTHX) | |
1476 | { | |
1477 | XPVHV* xpvhv; | |
1478 | LOCK_SV_MUTEX; | |
1479 | if (!PL_xpvhv_root) | |
1480 | more_xpvhv(); | |
1481 | xpvhv = PL_xpvhv_root; | |
1482 | PL_xpvhv_root = (XPVHV*)xpvhv->xhv_array; | |
1483 | UNLOCK_SV_MUTEX; | |
1484 | return xpvhv; | |
1485 | } | |
1486 | ||
645c22ef DM |
1487 | /* return a struct xpvhv to the free list */ |
1488 | ||
932e9ff9 VB |
1489 | STATIC void |
1490 | S_del_xpvhv(pTHX_ XPVHV *p) | |
1491 | { | |
1492 | LOCK_SV_MUTEX; | |
1493 | p->xhv_array = (char*)PL_xpvhv_root; | |
1494 | PL_xpvhv_root = p; | |
1495 | UNLOCK_SV_MUTEX; | |
1496 | } | |
1497 | ||
645c22ef DM |
1498 | /* allocate another arena's worth of struct xpvhv */ |
1499 | ||
932e9ff9 VB |
1500 | STATIC void |
1501 | S_more_xpvhv(pTHX) | |
1502 | { | |
1503 | register XPVHV* xpvhv; | |
1504 | register XPVHV* xpvhvend; | |
612f20c3 GS |
1505 | New(718, xpvhv, 1008/sizeof(XPVHV), XPVHV); |
1506 | xpvhv->xhv_array = (char*)PL_xpvhv_arenaroot; | |
1507 | PL_xpvhv_arenaroot = xpvhv; | |
1508 | ||
932e9ff9 | 1509 | xpvhvend = &xpvhv[1008 / sizeof(XPVHV) - 1]; |
612f20c3 | 1510 | PL_xpvhv_root = ++xpvhv; |
932e9ff9 VB |
1511 | while (xpvhv < xpvhvend) { |
1512 | xpvhv->xhv_array = (char*)(xpvhv + 1); | |
1513 | xpvhv++; | |
1514 | } | |
1515 | xpvhv->xhv_array = 0; | |
1516 | } | |
1517 | ||
645c22ef DM |
1518 | /* grab a new struct xpvmg from the free list, allocating more if necessary */ |
1519 | ||
932e9ff9 VB |
1520 | STATIC XPVMG* |
1521 | S_new_xpvmg(pTHX) | |
1522 | { | |
1523 | XPVMG* xpvmg; | |
1524 | LOCK_SV_MUTEX; | |
1525 | if (!PL_xpvmg_root) | |
1526 | more_xpvmg(); | |
1527 | xpvmg = PL_xpvmg_root; | |
1528 | PL_xpvmg_root = (XPVMG*)xpvmg->xpv_pv; | |
1529 | UNLOCK_SV_MUTEX; | |
1530 | return xpvmg; | |
1531 | } | |
1532 | ||
645c22ef DM |
1533 | /* return a struct xpvmg to the free list */ |
1534 | ||
932e9ff9 VB |
1535 | STATIC void |
1536 | S_del_xpvmg(pTHX_ XPVMG *p) | |
1537 | { | |
1538 | LOCK_SV_MUTEX; | |
1539 | p->xpv_pv = (char*)PL_xpvmg_root; | |
1540 | PL_xpvmg_root = p; | |
1541 | UNLOCK_SV_MUTEX; | |
1542 | } | |
1543 | ||
645c22ef DM |
1544 | /* allocate another arena's worth of struct xpvmg */ |
1545 | ||
932e9ff9 VB |
1546 | STATIC void |
1547 | S_more_xpvmg(pTHX) | |
1548 | { | |
1549 | register XPVMG* xpvmg; | |
1550 | register XPVMG* xpvmgend; | |
612f20c3 GS |
1551 | New(719, xpvmg, 1008/sizeof(XPVMG), XPVMG); |
1552 | xpvmg->xpv_pv = (char*)PL_xpvmg_arenaroot; | |
1553 | PL_xpvmg_arenaroot = xpvmg; | |
1554 | ||
932e9ff9 | 1555 | xpvmgend = &xpvmg[1008 / sizeof(XPVMG) - 1]; |
612f20c3 | 1556 | PL_xpvmg_root = ++xpvmg; |
932e9ff9 VB |
1557 | while (xpvmg < xpvmgend) { |
1558 | xpvmg->xpv_pv = (char*)(xpvmg + 1); | |
1559 | xpvmg++; | |
1560 | } | |
1561 | xpvmg->xpv_pv = 0; | |
1562 | } | |
1563 | ||
645c22ef DM |
1564 | /* grab a new struct xpvlv from the free list, allocating more if necessary */ |
1565 | ||
932e9ff9 VB |
1566 | STATIC XPVLV* |
1567 | S_new_xpvlv(pTHX) | |
1568 | { | |
1569 | XPVLV* xpvlv; | |
1570 | LOCK_SV_MUTEX; | |
1571 | if (!PL_xpvlv_root) | |
1572 | more_xpvlv(); | |
1573 | xpvlv = PL_xpvlv_root; | |
1574 | PL_xpvlv_root = (XPVLV*)xpvlv->xpv_pv; | |
1575 | UNLOCK_SV_MUTEX; | |
1576 | return xpvlv; | |
1577 | } | |
1578 | ||
645c22ef DM |
1579 | /* return a struct xpvlv to the free list */ |
1580 | ||
932e9ff9 VB |
1581 | STATIC void |
1582 | S_del_xpvlv(pTHX_ XPVLV *p) | |
1583 | { | |
1584 | LOCK_SV_MUTEX; | |
1585 | p->xpv_pv = (char*)PL_xpvlv_root; | |
1586 | PL_xpvlv_root = p; | |
1587 | UNLOCK_SV_MUTEX; | |
1588 | } | |
1589 | ||
645c22ef DM |
1590 | /* allocate another arena's worth of struct xpvlv */ |
1591 | ||
932e9ff9 VB |
1592 | STATIC void |
1593 | S_more_xpvlv(pTHX) | |
1594 | { | |
1595 | register XPVLV* xpvlv; | |
1596 | register XPVLV* xpvlvend; | |
612f20c3 GS |
1597 | New(720, xpvlv, 1008/sizeof(XPVLV), XPVLV); |
1598 | xpvlv->xpv_pv = (char*)PL_xpvlv_arenaroot; | |
1599 | PL_xpvlv_arenaroot = xpvlv; | |
1600 | ||
932e9ff9 | 1601 | xpvlvend = &xpvlv[1008 / sizeof(XPVLV) - 1]; |
612f20c3 | 1602 | PL_xpvlv_root = ++xpvlv; |
932e9ff9 VB |
1603 | while (xpvlv < xpvlvend) { |
1604 | xpvlv->xpv_pv = (char*)(xpvlv + 1); | |
1605 | xpvlv++; | |
1606 | } | |
1607 | xpvlv->xpv_pv = 0; | |
1608 | } | |
1609 | ||
645c22ef DM |
1610 | /* grab a new struct xpvbm from the free list, allocating more if necessary */ |
1611 | ||
932e9ff9 VB |
1612 | STATIC XPVBM* |
1613 | S_new_xpvbm(pTHX) | |
1614 | { | |
1615 | XPVBM* xpvbm; | |
1616 | LOCK_SV_MUTEX; | |
1617 | if (!PL_xpvbm_root) | |
1618 | more_xpvbm(); | |
1619 | xpvbm = PL_xpvbm_root; | |
1620 | PL_xpvbm_root = (XPVBM*)xpvbm->xpv_pv; | |
1621 | UNLOCK_SV_MUTEX; | |
1622 | return xpvbm; | |
1623 | } | |
1624 | ||
645c22ef DM |
1625 | /* return a struct xpvbm to the free list */ |
1626 | ||
932e9ff9 VB |
1627 | STATIC void |
1628 | S_del_xpvbm(pTHX_ XPVBM *p) | |
1629 | { | |
1630 | LOCK_SV_MUTEX; | |
1631 | p->xpv_pv = (char*)PL_xpvbm_root; | |
1632 | PL_xpvbm_root = p; | |
1633 | UNLOCK_SV_MUTEX; | |
1634 | } | |
1635 | ||
645c22ef DM |
1636 | /* allocate another arena's worth of struct xpvbm */ |
1637 | ||
932e9ff9 VB |
1638 | STATIC void |
1639 | S_more_xpvbm(pTHX) | |
1640 | { | |
1641 | register XPVBM* xpvbm; | |
1642 | register XPVBM* xpvbmend; | |
612f20c3 GS |
1643 | New(721, xpvbm, 1008/sizeof(XPVBM), XPVBM); |
1644 | xpvbm->xpv_pv = (char*)PL_xpvbm_arenaroot; | |
1645 | PL_xpvbm_arenaroot = xpvbm; | |
1646 | ||
932e9ff9 | 1647 | xpvbmend = &xpvbm[1008 / sizeof(XPVBM) - 1]; |
612f20c3 | 1648 | PL_xpvbm_root = ++xpvbm; |
932e9ff9 VB |
1649 | while (xpvbm < xpvbmend) { |
1650 | xpvbm->xpv_pv = (char*)(xpvbm + 1); | |
1651 | xpvbm++; | |
1652 | } | |
1653 | xpvbm->xpv_pv = 0; | |
1654 | } | |
1655 | ||
7bab3ede MB |
1656 | #define my_safemalloc(s) (void*)safemalloc(s) |
1657 | #define my_safefree(p) safefree((char*)p) | |
463ee0b2 | 1658 | |
d33b2eba | 1659 | #ifdef PURIFY |
463ee0b2 | 1660 | |
d33b2eba GS |
1661 | #define new_XIV() my_safemalloc(sizeof(XPVIV)) |
1662 | #define del_XIV(p) my_safefree(p) | |
ed6116ce | 1663 | |
d33b2eba GS |
1664 | #define new_XNV() my_safemalloc(sizeof(XPVNV)) |
1665 | #define del_XNV(p) my_safefree(p) | |
463ee0b2 | 1666 | |
d33b2eba GS |
1667 | #define new_XRV() my_safemalloc(sizeof(XRV)) |
1668 | #define del_XRV(p) my_safefree(p) | |
8c52afec | 1669 | |
d33b2eba GS |
1670 | #define new_XPV() my_safemalloc(sizeof(XPV)) |
1671 | #define del_XPV(p) my_safefree(p) | |
9b94d1dd | 1672 | |
d33b2eba GS |
1673 | #define new_XPVIV() my_safemalloc(sizeof(XPVIV)) |
1674 | #define del_XPVIV(p) my_safefree(p) | |
932e9ff9 | 1675 | |
d33b2eba GS |
1676 | #define new_XPVNV() my_safemalloc(sizeof(XPVNV)) |
1677 | #define del_XPVNV(p) my_safefree(p) | |
932e9ff9 | 1678 | |
d33b2eba GS |
1679 | #define new_XPVCV() my_safemalloc(sizeof(XPVCV)) |
1680 | #define del_XPVCV(p) my_safefree(p) | |
932e9ff9 | 1681 | |
d33b2eba GS |
1682 | #define new_XPVAV() my_safemalloc(sizeof(XPVAV)) |
1683 | #define del_XPVAV(p) my_safefree(p) | |
1684 | ||
1685 | #define new_XPVHV() my_safemalloc(sizeof(XPVHV)) | |
1686 | #define del_XPVHV(p) my_safefree(p) | |
1c846c1f | 1687 | |
d33b2eba GS |
1688 | #define new_XPVMG() my_safemalloc(sizeof(XPVMG)) |
1689 | #define del_XPVMG(p) my_safefree(p) | |
1690 | ||
1691 | #define new_XPVLV() my_safemalloc(sizeof(XPVLV)) | |
1692 | #define del_XPVLV(p) my_safefree(p) | |
1693 | ||
1694 | #define new_XPVBM() my_safemalloc(sizeof(XPVBM)) | |
1695 | #define del_XPVBM(p) my_safefree(p) | |
1696 | ||
1697 | #else /* !PURIFY */ | |
1698 | ||
1699 | #define new_XIV() (void*)new_xiv() | |
1700 | #define del_XIV(p) del_xiv((XPVIV*) p) | |
1701 | ||
1702 | #define new_XNV() (void*)new_xnv() | |
1703 | #define del_XNV(p) del_xnv((XPVNV*) p) | |
9b94d1dd | 1704 | |
d33b2eba GS |
1705 | #define new_XRV() (void*)new_xrv() |
1706 | #define del_XRV(p) del_xrv((XRV*) p) | |
9b94d1dd | 1707 | |
d33b2eba GS |
1708 | #define new_XPV() (void*)new_xpv() |
1709 | #define del_XPV(p) del_xpv((XPV *)p) | |
1710 | ||
1711 | #define new_XPVIV() (void*)new_xpviv() | |
1712 | #define del_XPVIV(p) del_xpviv((XPVIV *)p) | |
1713 | ||
1714 | #define new_XPVNV() (void*)new_xpvnv() | |
1715 | #define del_XPVNV(p) del_xpvnv((XPVNV *)p) | |
1716 | ||
1717 | #define new_XPVCV() (void*)new_xpvcv() | |
1718 | #define del_XPVCV(p) del_xpvcv((XPVCV *)p) | |
1719 | ||
1720 | #define new_XPVAV() (void*)new_xpvav() | |
1721 | #define del_XPVAV(p) del_xpvav((XPVAV *)p) | |
1722 | ||
1723 | #define new_XPVHV() (void*)new_xpvhv() | |
1724 | #define del_XPVHV(p) del_xpvhv((XPVHV *)p) | |
1c846c1f | 1725 | |
d33b2eba GS |
1726 | #define new_XPVMG() (void*)new_xpvmg() |
1727 | #define del_XPVMG(p) del_xpvmg((XPVMG *)p) | |
1728 | ||
1729 | #define new_XPVLV() (void*)new_xpvlv() | |
1730 | #define del_XPVLV(p) del_xpvlv((XPVLV *)p) | |
1731 | ||
1732 | #define new_XPVBM() (void*)new_xpvbm() | |
1733 | #define del_XPVBM(p) del_xpvbm((XPVBM *)p) | |
1734 | ||
1735 | #endif /* PURIFY */ | |
9b94d1dd | 1736 | |
d33b2eba GS |
1737 | #define new_XPVGV() my_safemalloc(sizeof(XPVGV)) |
1738 | #define del_XPVGV(p) my_safefree(p) | |
1c846c1f | 1739 | |
d33b2eba GS |
1740 | #define new_XPVFM() my_safemalloc(sizeof(XPVFM)) |
1741 | #define del_XPVFM(p) my_safefree(p) | |
1c846c1f | 1742 | |
d33b2eba GS |
1743 | #define new_XPVIO() my_safemalloc(sizeof(XPVIO)) |
1744 | #define del_XPVIO(p) my_safefree(p) | |
8990e307 | 1745 | |
954c1994 GS |
1746 | /* |
1747 | =for apidoc sv_upgrade | |
1748 | ||
ff276b08 | 1749 | Upgrade an SV to a more complex form. Generally adds a new body type to the |
645c22ef | 1750 | SV, then copies across as much information as possible from the old body. |
ff276b08 | 1751 | You generally want to use the C<SvUPGRADE> macro wrapper. See also C<svtype>. |
954c1994 GS |
1752 | |
1753 | =cut | |
1754 | */ | |
1755 | ||
79072805 | 1756 | bool |
864dbfa3 | 1757 | Perl_sv_upgrade(pTHX_ register SV *sv, U32 mt) |
79072805 | 1758 | { |
c04a4dfe JH |
1759 | char* pv = NULL; |
1760 | U32 cur = 0; | |
1761 | U32 len = 0; | |
1762 | IV iv = 0; | |
1763 | NV nv = 0.0; | |
1764 | MAGIC* magic = NULL; | |
1765 | HV* stash = Nullhv; | |
79072805 | 1766 | |
765f542d NC |
1767 | if (mt != SVt_PV && SvIsCOW(sv)) { |
1768 | sv_force_normal_flags(sv, 0); | |
f130fd45 NIS |
1769 | } |
1770 | ||
79072805 LW |
1771 | if (SvTYPE(sv) == mt) |
1772 | return TRUE; | |
1773 | ||
a5f75d66 AD |
1774 | if (mt < SVt_PVIV) |
1775 | (void)SvOOK_off(sv); | |
1776 | ||
79072805 LW |
1777 | switch (SvTYPE(sv)) { |
1778 | case SVt_NULL: | |
1779 | pv = 0; | |
1780 | cur = 0; | |
1781 | len = 0; | |
1782 | iv = 0; | |
1783 | nv = 0.0; | |
1784 | magic = 0; | |
1785 | stash = 0; | |
1786 | break; | |
79072805 LW |
1787 | case SVt_IV: |
1788 | pv = 0; | |
1789 | cur = 0; | |
1790 | len = 0; | |
463ee0b2 | 1791 | iv = SvIVX(sv); |
65202027 | 1792 | nv = (NV)SvIVX(sv); |
79072805 LW |
1793 | del_XIV(SvANY(sv)); |
1794 | magic = 0; | |
1795 | stash = 0; | |
ed6116ce | 1796 | if (mt == SVt_NV) |
463ee0b2 | 1797 | mt = SVt_PVNV; |
ed6116ce LW |
1798 | else if (mt < SVt_PVIV) |
1799 | mt = SVt_PVIV; | |
79072805 LW |
1800 | break; |
1801 | case SVt_NV: | |
1802 | pv = 0; | |
1803 | cur = 0; | |
1804 | len = 0; | |
463ee0b2 | 1805 | nv = SvNVX(sv); |
1bd302c3 | 1806 | iv = I_V(nv); |
79072805 LW |
1807 | magic = 0; |
1808 | stash = 0; | |
1809 | del_XNV(SvANY(sv)); | |
1810 | SvANY(sv) = 0; | |
ed6116ce | 1811 | if (mt < SVt_PVNV) |
79072805 LW |
1812 | mt = SVt_PVNV; |
1813 | break; | |
ed6116ce LW |
1814 | case SVt_RV: |
1815 | pv = (char*)SvRV(sv); | |
1816 | cur = 0; | |
1817 | len = 0; | |
56431972 RB |
1818 | iv = PTR2IV(pv); |
1819 | nv = PTR2NV(pv); | |
ed6116ce LW |
1820 | del_XRV(SvANY(sv)); |
1821 | magic = 0; | |
1822 | stash = 0; | |
1823 | break; | |
79072805 | 1824 | case SVt_PV: |
463ee0b2 | 1825 | pv = SvPVX(sv); |
79072805 LW |
1826 | cur = SvCUR(sv); |
1827 | len = SvLEN(sv); | |
1828 | iv = 0; | |
1829 | nv = 0.0; | |
1830 | magic = 0; | |
1831 | stash = 0; | |
1832 | del_XPV(SvANY(sv)); | |
748a9306 LW |
1833 | if (mt <= SVt_IV) |
1834 | mt = SVt_PVIV; | |
1835 | else if (mt == SVt_NV) | |
1836 | mt = SVt_PVNV; | |
79072805 LW |
1837 | break; |
1838 | case SVt_PVIV: | |
463ee0b2 | 1839 | pv = SvPVX(sv); |
79072805 LW |
1840 | cur = SvCUR(sv); |
1841 | len = SvLEN(sv); | |
463ee0b2 | 1842 | iv = SvIVX(sv); |
79072805 LW |
1843 | nv = 0.0; |
1844 | magic = 0; | |
1845 | stash = 0; | |
1846 | del_XPVIV(SvANY(sv)); | |
1847 | break; | |
1848 | case SVt_PVNV: | |
463ee0b2 | 1849 | pv = SvPVX(sv); |
79072805 LW |
1850 | cur = SvCUR(sv); |
1851 | len = SvLEN(sv); | |
463ee0b2 LW |
1852 | iv = SvIVX(sv); |
1853 | nv = SvNVX(sv); | |
79072805 LW |
1854 | magic = 0; |
1855 | stash = 0; | |
1856 | del_XPVNV(SvANY(sv)); | |
1857 | break; | |
1858 | case SVt_PVMG: | |
463ee0b2 | 1859 | pv = SvPVX(sv); |
79072805 LW |
1860 | cur = SvCUR(sv); |
1861 | len = SvLEN(sv); | |
463ee0b2 LW |
1862 | iv = SvIVX(sv); |
1863 | nv = SvNVX(sv); | |
79072805 LW |
1864 | magic = SvMAGIC(sv); |
1865 | stash = SvSTASH(sv); | |
1866 | del_XPVMG(SvANY(sv)); | |
1867 | break; | |
1868 | default: | |
cea2e8a9 | 1869 | Perl_croak(aTHX_ "Can't upgrade that kind of scalar"); |
79072805 LW |
1870 | } |
1871 | ||
ffb05e06 NC |
1872 | SvFLAGS(sv) &= ~SVTYPEMASK; |
1873 | SvFLAGS(sv) |= mt; | |
1874 | ||
79072805 LW |
1875 | switch (mt) { |
1876 | case SVt_NULL: | |
cea2e8a9 | 1877 | Perl_croak(aTHX_ "Can't upgrade to undef"); |
79072805 LW |
1878 | case SVt_IV: |
1879 | SvANY(sv) = new_XIV(); | |
463ee0b2 | 1880 | SvIVX(sv) = iv; |
79072805 LW |
1881 | break; |
1882 | case SVt_NV: | |
1883 | SvANY(sv) = new_XNV(); | |
463ee0b2 | 1884 | SvNVX(sv) = nv; |
79072805 | 1885 | break; |
ed6116ce LW |
1886 | case SVt_RV: |
1887 | SvANY(sv) = new_XRV(); | |
1888 | SvRV(sv) = (SV*)pv; | |
ed6116ce | 1889 | break; |
79072805 LW |
1890 | case SVt_PV: |
1891 | SvANY(sv) = new_XPV(); | |
463ee0b2 | 1892 | SvPVX(sv) = pv; |
79072805 LW |
1893 | SvCUR(sv) = cur; |
1894 | SvLEN(sv) = len; | |
1895 | break; | |
1896 | case SVt_PVIV: | |
1897 | SvANY(sv) = new_XPVIV(); | |
463ee0b2 | 1898 | SvPVX(sv) = pv; |
79072805 LW |
1899 | SvCUR(sv) = cur; |
1900 | SvLEN(sv) = len; | |
463ee0b2 | 1901 | SvIVX(sv) = iv; |
79072805 | 1902 | if (SvNIOK(sv)) |
a0d0e21e | 1903 | (void)SvIOK_on(sv); |
79072805 LW |
1904 | SvNOK_off(sv); |
1905 | break; | |
1906 | case SVt_PVNV: | |
1907 | SvANY(sv) = new_XPVNV(); | |
463ee0b2 | 1908 | SvPVX(sv) = pv; |
79072805 LW |
1909 | SvCUR(sv) = cur; |
1910 | SvLEN(sv) = len; | |
463ee0b2 LW |
1911 | SvIVX(sv) = iv; |
1912 | SvNVX(sv) = nv; | |
79072805 LW |
1913 | break; |
1914 | case SVt_PVMG: | |
1915 | SvANY(sv) = new_XPVMG(); | |
463ee0b2 | 1916 | SvPVX(sv) = pv; |
79072805 LW |
1917 | SvCUR(sv) = cur; |
1918 | SvLEN(sv) = len; | |
463ee0b2 LW |
1919 | SvIVX(sv) = iv; |
1920 | SvNVX(sv) = nv; | |
79072805 LW |
1921 | SvMAGIC(sv) = magic; |
1922 | SvSTASH(sv) = stash; | |
1923 | break; | |
1924 | case SVt_PVLV: | |
1925 | SvANY(sv) = new_XPVLV(); | |
463ee0b2 | 1926 | SvPVX(sv) = pv; |
79072805 LW |
1927 | SvCUR(sv) = cur; |
1928 | SvLEN(sv) = len; | |
463ee0b2 LW |
1929 | SvIVX(sv) = iv; |
1930 | SvNVX(sv) = nv; | |
79072805 LW |
1931 | SvMAGIC(sv) = magic; |
1932 | SvSTASH(sv) = stash; | |
1933 | LvTARGOFF(sv) = 0; | |
1934 | LvTARGLEN(sv) = 0; | |
1935 | LvTARG(sv) = 0; | |
1936 | LvTYPE(sv) = 0; | |
b76195c2 DM |
1937 | GvGP(sv) = 0; |
1938 | GvNAME(sv) = 0; | |
1939 | GvNAMELEN(sv) = 0; | |
1940 | GvSTASH(sv) = 0; | |
1941 | GvFLAGS(sv) = 0; | |
79072805 LW |
1942 | break; |
1943 | case SVt_PVAV: | |
1944 | SvANY(sv) = new_XPVAV(); | |
463ee0b2 LW |
1945 | if (pv) |
1946 | Safefree(pv); | |
2304df62 | 1947 | SvPVX(sv) = 0; |
d1bf51dd | 1948 | AvMAX(sv) = -1; |
93965878 | 1949 | AvFILLp(sv) = -1; |
463ee0b2 LW |
1950 | SvIVX(sv) = 0; |
1951 | SvNVX(sv) = 0.0; | |
1952 | SvMAGIC(sv) = magic; | |
1953 | SvSTASH(sv) = stash; | |
1954 | AvALLOC(sv) = 0; | |
79072805 LW |
1955 | AvARYLEN(sv) = 0; |
1956 | AvFLAGS(sv) = 0; | |
1957 | break; | |
1958 | case SVt_PVHV: | |
1959 | SvANY(sv) = new_XPVHV(); | |
463ee0b2 LW |
1960 | if (pv) |
1961 | Safefree(pv); | |
1962 | SvPVX(sv) = 0; | |
1963 | HvFILL(sv) = 0; | |
1964 | HvMAX(sv) = 0; | |
8aacddc1 NIS |
1965 | HvTOTALKEYS(sv) = 0; |
1966 | HvPLACEHOLDERS(sv) = 0; | |
79072805 LW |
1967 | SvMAGIC(sv) = magic; |
1968 | SvSTASH(sv) = stash; | |
79072805 LW |
1969 | HvRITER(sv) = 0; |
1970 | HvEITER(sv) = 0; | |
1971 | HvPMROOT(sv) = 0; | |
1972 | HvNAME(sv) = 0; | |
79072805 LW |
1973 | break; |
1974 | case SVt_PVCV: | |
1975 | SvANY(sv) = new_XPVCV(); | |
748a9306 | 1976 | Zero(SvANY(sv), 1, XPVCV); |
463ee0b2 | 1977 | SvPVX(sv) = pv; |
79072805 LW |
1978 | SvCUR(sv) = cur; |
1979 | SvLEN(sv) = len; | |
463ee0b2 LW |
1980 | SvIVX(sv) = iv; |
1981 | SvNVX(sv) = nv; | |
79072805 LW |
1982 | SvMAGIC(sv) = magic; |
1983 | SvSTASH(sv) = stash; | |
79072805 LW |
1984 | break; |
1985 | case SVt_PVGV: | |
1986 | SvANY(sv) = new_XPVGV(); | |
463ee0b2 | 1987 | SvPVX(sv) = pv; |
79072805 LW |
1988 | SvCUR(sv) = cur; |
1989 | SvLEN(sv) = len; | |
463ee0b2 LW |
1990 | SvIVX(sv) = iv; |
1991 | SvNVX(sv) = nv; | |
79072805 LW |
1992 | SvMAGIC(sv) = magic; |
1993 | SvSTASH(sv) = stash; | |
93a17b20 | 1994 | GvGP(sv) = 0; |
79072805 LW |
1995 | GvNAME(sv) = 0; |
1996 | GvNAMELEN(sv) = 0; | |
1997 | GvSTASH(sv) = 0; | |
a5f75d66 | 1998 | GvFLAGS(sv) = 0; |
79072805 LW |
1999 | break; |
2000 | case SVt_PVBM: | |
2001 | SvANY(sv) = new_XPVBM(); | |
463ee0b2 | 2002 | SvPVX(sv) = pv; |
79072805 LW |
2003 | SvCUR(sv) = cur; |
2004 | SvLEN(sv) = len; | |
463ee0b2 LW |
2005 | SvIVX(sv) = iv; |
2006 | SvNVX(sv) = nv; | |
79072805 LW |
2007 | SvMAGIC(sv) = magic; |
2008 | SvSTASH(sv) = stash; | |
2009 | BmRARE(sv) = 0; | |
2010 | BmUSEFUL(sv) = 0; | |
2011 | BmPREVIOUS(sv) = 0; | |
2012 | break; | |
2013 | case SVt_PVFM: | |
2014 | SvANY(sv) = new_XPVFM(); | |
748a9306 | 2015 | Zero(SvANY(sv), 1, XPVFM); |
463ee0b2 | 2016 | SvPVX(sv) = pv; |
79072805 LW |
2017 | SvCUR(sv) = cur; |
2018 | SvLEN(sv) = len; | |
463ee0b2 LW |
2019 | SvIVX(sv) = iv; |
2020 | SvNVX(sv) = nv; | |
79072805 LW |
2021 | SvMAGIC(sv) = magic; |
2022 | SvSTASH(sv) = stash; | |
79072805 | 2023 | break; |
8990e307 LW |
2024 | case SVt_PVIO: |
2025 | SvANY(sv) = new_XPVIO(); | |
748a9306 | 2026 | Zero(SvANY(sv), 1, XPVIO); |
8990e307 LW |
2027 | SvPVX(sv) = pv; |
2028 | SvCUR(sv) = cur; | |
2029 | SvLEN(sv) = len; | |
2030 | SvIVX(sv) = iv; | |
2031 | SvNVX(sv) = nv; | |
2032 | SvMAGIC(sv) = magic; | |
2033 | SvSTASH(sv) = stash; | |
85e6fe83 | 2034 | IoPAGE_LEN(sv) = 60; |
8990e307 LW |
2035 | break; |
2036 | } | |
79072805 LW |
2037 | return TRUE; |
2038 | } | |
2039 | ||
645c22ef DM |
2040 | /* |
2041 | =for apidoc sv_backoff | |
2042 | ||
2043 | Remove any string offset. You should normally use the C<SvOOK_off> macro | |
2044 | wrapper instead. | |
2045 | ||
2046 | =cut | |
2047 | */ | |
2048 | ||
79072805 | 2049 | int |
864dbfa3 | 2050 | Perl_sv_backoff(pTHX_ register SV *sv) |
79072805 LW |
2051 | { |
2052 | assert(SvOOK(sv)); | |
463ee0b2 LW |
2053 | if (SvIVX(sv)) { |
2054 | char *s = SvPVX(sv); | |
2055 | SvLEN(sv) += SvIVX(sv); | |
2056 | SvPVX(sv) -= SvIVX(sv); | |
79072805 | 2057 | SvIV_set(sv, 0); |
463ee0b2 | 2058 | Move(s, SvPVX(sv), SvCUR(sv)+1, char); |
79072805 LW |
2059 | } |
2060 | SvFLAGS(sv) &= ~SVf_OOK; | |
a0d0e21e | 2061 | return 0; |
79072805 LW |
2062 | } |
2063 | ||
954c1994 GS |
2064 | /* |
2065 | =for apidoc sv_grow | |
2066 | ||
645c22ef DM |
2067 | Expands the character buffer in the SV. If necessary, uses C<sv_unref> and |
2068 | upgrades the SV to C<SVt_PV>. Returns a pointer to the character buffer. | |
2069 | Use the C<SvGROW> wrapper instead. | |
954c1994 GS |
2070 | |
2071 | =cut | |
2072 | */ | |
2073 | ||
79072805 | 2074 | char * |
864dbfa3 | 2075 | Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen) |
79072805 LW |
2076 | { |
2077 | register char *s; | |
2078 | ||
55497cff | 2079 | #ifdef HAS_64K_LIMIT |
79072805 | 2080 | if (newlen >= 0x10000) { |
1d7c1841 GS |
2081 | PerlIO_printf(Perl_debug_log, |
2082 | "Allocation too large: %"UVxf"\n", (UV)newlen); | |
79072805 LW |
2083 | my_exit(1); |
2084 | } | |
55497cff | 2085 | #endif /* HAS_64K_LIMIT */ |
a0d0e21e LW |
2086 | if (SvROK(sv)) |
2087 | sv_unref(sv); | |
79072805 LW |
2088 | if (SvTYPE(sv) < SVt_PV) { |
2089 | sv_upgrade(sv, SVt_PV); | |
463ee0b2 | 2090 | s = SvPVX(sv); |
79072805 LW |
2091 | } |
2092 | else if (SvOOK(sv)) { /* pv is offset? */ | |
2093 | sv_backoff(sv); | |
463ee0b2 | 2094 | s = SvPVX(sv); |
79072805 LW |
2095 | if (newlen > SvLEN(sv)) |
2096 | newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */ | |
c6f8c383 GA |
2097 | #ifdef HAS_64K_LIMIT |
2098 | if (newlen >= 0x10000) | |
2099 | newlen = 0xFFFF; | |
2100 | #endif | |
79072805 | 2101 | } |
bc44a8a2 | 2102 | else |
463ee0b2 | 2103 | s = SvPVX(sv); |
54f0641b | 2104 | |
79072805 | 2105 | if (newlen > SvLEN(sv)) { /* need more room? */ |
8d6dde3e | 2106 | if (SvLEN(sv) && s) { |
7bab3ede | 2107 | #ifdef MYMALLOC |
8d6dde3e IZ |
2108 | STRLEN l = malloced_size((void*)SvPVX(sv)); |
2109 | if (newlen <= l) { | |
2110 | SvLEN_set(sv, l); | |
2111 | return s; | |
2112 | } else | |
c70c8a0a | 2113 | #endif |
79072805 | 2114 | Renew(s,newlen,char); |
8d6dde3e | 2115 | } |
4e83176d | 2116 | else { |
4e83176d | 2117 | New(703, s, newlen, char); |
40565179 | 2118 | if (SvPVX(sv) && SvCUR(sv)) { |
54f0641b | 2119 | Move(SvPVX(sv), s, (newlen < SvCUR(sv)) ? newlen : SvCUR(sv), char); |
40565179 | 2120 | } |
4e83176d | 2121 | } |
79072805 LW |
2122 | SvPV_set(sv, s); |
2123 | SvLEN_set(sv, newlen); | |
2124 | } | |
2125 | return s; | |
2126 | } | |
2127 | ||
954c1994 GS |
2128 | /* |
2129 | =for apidoc sv_setiv | |
2130 | ||
645c22ef DM |
2131 | Copies an integer into the given SV, upgrading first if necessary. |
2132 | Does not handle 'set' magic. See also C<sv_setiv_mg>. | |
954c1994 GS |
2133 | |
2134 | =cut | |
2135 | */ | |
2136 | ||
79072805 | 2137 | void |
864dbfa3 | 2138 | Perl_sv_setiv(pTHX_ register SV *sv, IV i) |
79072805 | 2139 | { |
765f542d | 2140 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 LW |
2141 | switch (SvTYPE(sv)) { |
2142 | case SVt_NULL: | |
79072805 | 2143 | sv_upgrade(sv, SVt_IV); |
463ee0b2 LW |
2144 | break; |
2145 | case SVt_NV: | |
2146 | sv_upgrade(sv, SVt_PVNV); | |
2147 | break; | |
ed6116ce | 2148 | case SVt_RV: |
463ee0b2 | 2149 | case SVt_PV: |
79072805 | 2150 | sv_upgrade(sv, SVt_PVIV); |
463ee0b2 | 2151 | break; |
a0d0e21e LW |
2152 | |
2153 | case SVt_PVGV: | |
a0d0e21e LW |
2154 | case SVt_PVAV: |
2155 | case SVt_PVHV: | |
2156 | case SVt_PVCV: | |
2157 | case SVt_PVFM: | |
2158 | case SVt_PVIO: | |
411caa50 | 2159 | Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0), |
53e06cf0 | 2160 | OP_DESC(PL_op)); |
463ee0b2 | 2161 | } |
a0d0e21e | 2162 | (void)SvIOK_only(sv); /* validate number */ |
a5f75d66 | 2163 | SvIVX(sv) = i; |
463ee0b2 | 2164 | SvTAINT(sv); |
79072805 LW |
2165 | } |
2166 | ||
954c1994 GS |
2167 | /* |
2168 | =for apidoc sv_setiv_mg | |
2169 | ||
2170 | Like C<sv_setiv>, but also handles 'set' magic. | |
2171 | ||
2172 | =cut | |
2173 | */ | |
2174 | ||
79072805 | 2175 | void |
864dbfa3 | 2176 | Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i) |
ef50df4b GS |
2177 | { |
2178 | sv_setiv(sv,i); | |
2179 | SvSETMAGIC(sv); | |
2180 | } | |
2181 | ||
954c1994 GS |
2182 | /* |
2183 | =for apidoc sv_setuv | |
2184 | ||
645c22ef DM |
2185 | Copies an unsigned integer into the given SV, upgrading first if necessary. |
2186 | Does not handle 'set' magic. See also C<sv_setuv_mg>. | |
954c1994 GS |
2187 | |
2188 | =cut | |
2189 | */ | |
2190 | ||
ef50df4b | 2191 | void |
864dbfa3 | 2192 | Perl_sv_setuv(pTHX_ register SV *sv, UV u) |
55497cff | 2193 | { |
55ada374 NC |
2194 | /* With these two if statements: |
2195 | u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865 | |
d460ef45 | 2196 | |
55ada374 NC |
2197 | without |
2198 | u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865 | |
d460ef45 | 2199 | |
55ada374 NC |
2200 | If you wish to remove them, please benchmark to see what the effect is |
2201 | */ | |
28e5dec8 JH |
2202 | if (u <= (UV)IV_MAX) { |
2203 | sv_setiv(sv, (IV)u); | |
2204 | return; | |
2205 | } | |
25da4f38 IZ |
2206 | sv_setiv(sv, 0); |
2207 | SvIsUV_on(sv); | |
2208 | SvUVX(sv) = u; | |
55497cff | 2209 | } |
2210 | ||
954c1994 GS |
2211 | /* |
2212 | =for apidoc sv_setuv_mg | |
2213 | ||
2214 | Like C<sv_setuv>, but also handles 'set' magic. | |
2215 | ||
2216 | =cut | |
2217 | */ | |
2218 | ||
55497cff | 2219 | void |
864dbfa3 | 2220 | Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u) |
ef50df4b | 2221 | { |
55ada374 NC |
2222 | /* With these two if statements: |
2223 | u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865 | |
d460ef45 | 2224 | |
55ada374 NC |
2225 | without |
2226 | u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865 | |
d460ef45 | 2227 | |
55ada374 NC |
2228 | If you wish to remove them, please benchmark to see what the effect is |
2229 | */ | |
28e5dec8 JH |
2230 | if (u <= (UV)IV_MAX) { |
2231 | sv_setiv(sv, (IV)u); | |
2232 | } else { | |
2233 | sv_setiv(sv, 0); | |
2234 | SvIsUV_on(sv); | |
2235 | sv_setuv(sv,u); | |
2236 | } | |
ef50df4b GS |
2237 | SvSETMAGIC(sv); |
2238 | } | |
2239 | ||
954c1994 GS |
2240 | /* |
2241 | =for apidoc sv_setnv | |
2242 | ||
645c22ef DM |
2243 | Copies a double into the given SV, upgrading first if necessary. |
2244 | Does not handle 'set' magic. See also C<sv_setnv_mg>. | |
954c1994 GS |
2245 | |
2246 | =cut | |
2247 | */ | |
2248 | ||
ef50df4b | 2249 | void |
65202027 | 2250 | Perl_sv_setnv(pTHX_ register SV *sv, NV num) |
79072805 | 2251 | { |
765f542d | 2252 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
a0d0e21e LW |
2253 | switch (SvTYPE(sv)) { |
2254 | case SVt_NULL: | |
2255 | case SVt_IV: | |
79072805 | 2256 | sv_upgrade(sv, SVt_NV); |
a0d0e21e | 2257 | break; |
a0d0e21e LW |
2258 | case SVt_RV: |
2259 | case SVt_PV: | |
2260 | case SVt_PVIV: | |
79072805 | 2261 | sv_upgrade(sv, SVt_PVNV); |
a0d0e21e | 2262 | break; |
827b7e14 | 2263 | |
a0d0e21e | 2264 | case SVt_PVGV: |
a0d0e21e LW |
2265 | case SVt_PVAV: |
2266 | case SVt_PVHV: | |
2267 | case SVt_PVCV: | |
2268 | case SVt_PVFM: | |
2269 | case SVt_PVIO: | |
411caa50 | 2270 | Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0), |
53e06cf0 | 2271 | OP_NAME(PL_op)); |
79072805 | 2272 | } |
463ee0b2 | 2273 | SvNVX(sv) = num; |
a0d0e21e | 2274 | (void)SvNOK_only(sv); /* validate number */ |
463ee0b2 | 2275 | SvTAINT(sv); |
79072805 LW |
2276 | } |
2277 | ||
954c1994 GS |
2278 | /* |
2279 | =for apidoc sv_setnv_mg | |
2280 | ||
2281 | Like C<sv_setnv>, but also handles 'set' magic. | |
2282 | ||
2283 | =cut | |
2284 | */ | |
2285 | ||
ef50df4b | 2286 | void |
65202027 | 2287 | Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num) |
ef50df4b GS |
2288 | { |
2289 | sv_setnv(sv,num); | |
2290 | SvSETMAGIC(sv); | |
2291 | } | |
2292 | ||
645c22ef DM |
2293 | /* Print an "isn't numeric" warning, using a cleaned-up, |
2294 | * printable version of the offending string | |
2295 | */ | |
2296 | ||
76e3520e | 2297 | STATIC void |
cea2e8a9 | 2298 | S_not_a_number(pTHX_ SV *sv) |
a0d0e21e | 2299 | { |
94463019 JH |
2300 | SV *dsv; |
2301 | char tmpbuf[64]; | |
2302 | char *pv; | |
2303 | ||
2304 | if (DO_UTF8(sv)) { | |
2305 | dsv = sv_2mortal(newSVpv("", 0)); | |
2306 | pv = sv_uni_display(dsv, sv, 10, 0); | |
2307 | } else { | |
2308 | char *d = tmpbuf; | |
2309 | char *limit = tmpbuf + sizeof(tmpbuf) - 8; | |
2310 | /* each *s can expand to 4 chars + "...\0", | |
2311 | i.e. need room for 8 chars */ | |
ecdeb87c | 2312 | |
94463019 JH |
2313 | char *s, *end; |
2314 | for (s = SvPVX(sv), end = s + SvCUR(sv); s < end && d < limit; s++) { | |
2315 | int ch = *s & 0xFF; | |
2316 | if (ch & 128 && !isPRINT_LC(ch)) { | |
2317 | *d++ = 'M'; | |
2318 | *d++ = '-'; | |
2319 | ch &= 127; | |
2320 | } | |
2321 | if (ch == '\n') { | |
2322 | *d++ = '\\'; | |
2323 | *d++ = 'n'; | |
2324 | } | |
2325 | else if (ch == '\r') { | |
2326 | *d++ = '\\'; | |
2327 | *d++ = 'r'; | |
2328 | } | |
2329 | else if (ch == '\f') { | |
2330 | *d++ = '\\'; | |
2331 | *d++ = 'f'; | |
2332 | } | |
2333 | else if (ch == '\\') { | |
2334 | *d++ = '\\'; | |
2335 | *d++ = '\\'; | |
2336 | } | |
2337 | else if (ch == '\0') { | |
2338 | *d++ = '\\'; | |
2339 | *d++ = '0'; | |
2340 | } | |
2341 | else if (isPRINT_LC(ch)) | |
2342 | *d++ = ch; | |
2343 | else { | |
2344 | *d++ = '^'; | |
2345 | *d++ = toCTRL(ch); | |
2346 | } | |
2347 | } | |
2348 | if (s < end) { | |
2349 | *d++ = '.'; | |
2350 | *d++ = '.'; | |
2351 | *d++ = '.'; | |
2352 | } | |
2353 | *d = '\0'; | |
2354 | pv = tmpbuf; | |
a0d0e21e | 2355 | } |
a0d0e21e | 2356 | |
533c011a | 2357 | if (PL_op) |
9014280d | 2358 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 JH |
2359 | "Argument \"%s\" isn't numeric in %s", pv, |
2360 | OP_DESC(PL_op)); | |
a0d0e21e | 2361 | else |
9014280d | 2362 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 | 2363 | "Argument \"%s\" isn't numeric", pv); |
a0d0e21e LW |
2364 | } |
2365 | ||
c2988b20 NC |
2366 | /* |
2367 | =for apidoc looks_like_number | |
2368 | ||
645c22ef DM |
2369 | Test if the content of an SV looks like a number (or is a number). |
2370 | C<Inf> and C<Infinity> are treated as numbers (so will not issue a | |
2371 | non-numeric warning), even if your atof() doesn't grok them. | |
c2988b20 NC |
2372 | |
2373 | =cut | |
2374 | */ | |
2375 | ||
2376 | I32 | |
2377 | Perl_looks_like_number(pTHX_ SV *sv) | |
2378 | { | |
2379 | register char *sbegin; | |
2380 | STRLEN len; | |
2381 | ||
2382 | if (SvPOK(sv)) { | |
2383 | sbegin = SvPVX(sv); | |
2384 | len = SvCUR(sv); | |
2385 | } | |
2386 | else if (SvPOKp(sv)) | |
2387 | sbegin = SvPV(sv, len); | |
2388 | else | |
e0ab1c0e | 2389 | return SvFLAGS(sv) & (SVf_NOK|SVp_NOK|SVf_IOK|SVp_IOK); |
c2988b20 NC |
2390 | return grok_number(sbegin, len, NULL); |
2391 | } | |
25da4f38 IZ |
2392 | |
2393 | /* Actually, ISO C leaves conversion of UV to IV undefined, but | |
2394 | until proven guilty, assume that things are not that bad... */ | |
2395 | ||
645c22ef DM |
2396 | /* |
2397 | NV_PRESERVES_UV: | |
2398 | ||
2399 | As 64 bit platforms often have an NV that doesn't preserve all bits of | |
28e5dec8 JH |
2400 | an IV (an assumption perl has been based on to date) it becomes necessary |
2401 | to remove the assumption that the NV always carries enough precision to | |
2402 | recreate the IV whenever needed, and that the NV is the canonical form. | |
2403 | Instead, IV/UV and NV need to be given equal rights. So as to not lose | |
645c22ef | 2404 | precision as a side effect of conversion (which would lead to insanity |
28e5dec8 JH |
2405 | and the dragon(s) in t/op/numconvert.t getting very angry) the intent is |
2406 | 1) to distinguish between IV/UV/NV slots that have cached a valid | |
2407 | conversion where precision was lost and IV/UV/NV slots that have a | |
2408 | valid conversion which has lost no precision | |
645c22ef | 2409 | 2) to ensure that if a numeric conversion to one form is requested that |
28e5dec8 JH |
2410 | would lose precision, the precise conversion (or differently |
2411 | imprecise conversion) is also performed and cached, to prevent | |
2412 | requests for different numeric formats on the same SV causing | |
2413 | lossy conversion chains. (lossless conversion chains are perfectly | |
2414 | acceptable (still)) | |
2415 | ||
2416 | ||
2417 | flags are used: | |
2418 | SvIOKp is true if the IV slot contains a valid value | |
2419 | SvIOK is true only if the IV value is accurate (UV if SvIOK_UV true) | |
2420 | SvNOKp is true if the NV slot contains a valid value | |
2421 | SvNOK is true only if the NV value is accurate | |
2422 | ||
2423 | so | |
645c22ef | 2424 | while converting from PV to NV, check to see if converting that NV to an |
28e5dec8 JH |
2425 | IV(or UV) would lose accuracy over a direct conversion from PV to |
2426 | IV(or UV). If it would, cache both conversions, return NV, but mark | |
2427 | SV as IOK NOKp (ie not NOK). | |
2428 | ||
645c22ef | 2429 | While converting from PV to IV, check to see if converting that IV to an |
28e5dec8 JH |
2430 | NV would lose accuracy over a direct conversion from PV to NV. If it |
2431 | would, cache both conversions, flag similarly. | |
2432 | ||
2433 | Before, the SV value "3.2" could become NV=3.2 IV=3 NOK, IOK quite | |
2434 | correctly because if IV & NV were set NV *always* overruled. | |
645c22ef DM |
2435 | Now, "3.2" will become NV=3.2 IV=3 NOK, IOKp, because the flag's meaning |
2436 | changes - now IV and NV together means that the two are interchangeable: | |
28e5dec8 | 2437 | SvIVX == (IV) SvNVX && SvNVX == (NV) SvIVX; |
d460ef45 | 2438 | |
645c22ef DM |
2439 | The benefit of this is that operations such as pp_add know that if |
2440 | SvIOK is true for both left and right operands, then integer addition | |
2441 | can be used instead of floating point (for cases where the result won't | |
2442 | overflow). Before, floating point was always used, which could lead to | |
28e5dec8 JH |
2443 | loss of precision compared with integer addition. |
2444 | ||
2445 | * making IV and NV equal status should make maths accurate on 64 bit | |
2446 | platforms | |
2447 | * may speed up maths somewhat if pp_add and friends start to use | |
645c22ef | 2448 | integers when possible instead of fp. (Hopefully the overhead in |
28e5dec8 JH |
2449 | looking for SvIOK and checking for overflow will not outweigh the |
2450 | fp to integer speedup) | |
2451 | * will slow down integer operations (callers of SvIV) on "inaccurate" | |
2452 | values, as the change from SvIOK to SvIOKp will cause a call into | |
2453 | sv_2iv each time rather than a macro access direct to the IV slot | |
2454 | * should speed up number->string conversion on integers as IV is | |
645c22ef | 2455 | favoured when IV and NV are equally accurate |
28e5dec8 JH |
2456 | |
2457 | #################################################################### | |
645c22ef DM |
2458 | You had better be using SvIOK_notUV if you want an IV for arithmetic: |
2459 | SvIOK is true if (IV or UV), so you might be getting (IV)SvUV. | |
2460 | On the other hand, SvUOK is true iff UV. | |
28e5dec8 JH |
2461 | #################################################################### |
2462 | ||
645c22ef | 2463 | Your mileage will vary depending your CPU's relative fp to integer |
28e5dec8 JH |
2464 | performance ratio. |
2465 | */ | |
2466 | ||
2467 | #ifndef NV_PRESERVES_UV | |
645c22ef DM |
2468 | # define IS_NUMBER_UNDERFLOW_IV 1 |
2469 | # define IS_NUMBER_UNDERFLOW_UV 2 | |
2470 | # define IS_NUMBER_IV_AND_UV 2 | |
2471 | # define IS_NUMBER_OVERFLOW_IV 4 | |
2472 | # define IS_NUMBER_OVERFLOW_UV 5 | |
2473 | ||
2474 | /* sv_2iuv_non_preserve(): private routine for use by sv_2iv() and sv_2uv() */ | |
28e5dec8 JH |
2475 | |
2476 | /* For sv_2nv these three cases are "SvNOK and don't bother casting" */ | |
2477 | STATIC int | |
645c22ef | 2478 | S_sv_2iuv_non_preserve(pTHX_ register SV *sv, I32 numtype) |
28e5dec8 | 2479 | { |
1779d84d | 2480 | DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_2iuv_non '%s', IV=0x%"UVxf" NV=%"NVgf" inttype=%"UVXf"\n", SvPVX(sv), SvIVX(sv), SvNVX(sv), (UV)numtype)); |
28e5dec8 JH |
2481 | if (SvNVX(sv) < (NV)IV_MIN) { |
2482 | (void)SvIOKp_on(sv); | |
2483 | (void)SvNOK_on(sv); | |
2484 | SvIVX(sv) = IV_MIN; | |
2485 | return IS_NUMBER_UNDERFLOW_IV; | |
2486 | } | |
2487 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2488 | (void)SvIOKp_on(sv); | |
2489 | (void)SvNOK_on(sv); | |
2490 | SvIsUV_on(sv); | |
2491 | SvUVX(sv) = UV_MAX; | |
2492 | return IS_NUMBER_OVERFLOW_UV; | |
2493 | } | |
c2988b20 NC |
2494 | (void)SvIOKp_on(sv); |
2495 | (void)SvNOK_on(sv); | |
2496 | /* Can't use strtol etc to convert this string. (See truth table in | |
2497 | sv_2iv */ | |
2498 | if (SvNVX(sv) <= (UV)IV_MAX) { | |
2499 | SvIVX(sv) = I_V(SvNVX(sv)); | |
2500 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { | |
2501 | SvIOK_on(sv); /* Integer is precise. NOK, IOK */ | |
2502 | } else { | |
2503 | /* Integer is imprecise. NOK, IOKp */ | |
2504 | } | |
2505 | return SvNVX(sv) < 0 ? IS_NUMBER_UNDERFLOW_UV : IS_NUMBER_IV_AND_UV; | |
2506 | } | |
2507 | SvIsUV_on(sv); | |
2508 | SvUVX(sv) = U_V(SvNVX(sv)); | |
2509 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
2510 | if (SvUVX(sv) == UV_MAX) { | |
2511 | /* As we know that NVs don't preserve UVs, UV_MAX cannot | |
2512 | possibly be preserved by NV. Hence, it must be overflow. | |
2513 | NOK, IOKp */ | |
2514 | return IS_NUMBER_OVERFLOW_UV; | |
2515 | } | |
2516 | SvIOK_on(sv); /* Integer is precise. NOK, UOK */ | |
2517 | } else { | |
2518 | /* Integer is imprecise. NOK, IOKp */ | |
28e5dec8 | 2519 | } |
c2988b20 | 2520 | return IS_NUMBER_OVERFLOW_IV; |
28e5dec8 | 2521 | } |
645c22ef DM |
2522 | #endif /* !NV_PRESERVES_UV*/ |
2523 | ||
891f9566 YST |
2524 | /* sv_2iv() is now a macro using Perl_sv_2iv_flags(); |
2525 | * this function provided for binary compatibility only | |
2526 | */ | |
2527 | ||
2528 | IV | |
2529 | Perl_sv_2iv(pTHX_ register SV *sv) | |
2530 | { | |
2531 | return sv_2iv_flags(sv, SV_GMAGIC); | |
2532 | } | |
2533 | ||
645c22ef | 2534 | /* |
891f9566 | 2535 | =for apidoc sv_2iv_flags |
645c22ef | 2536 | |
891f9566 YST |
2537 | Return the integer value of an SV, doing any necessary string |
2538 | conversion. If flags includes SV_GMAGIC, does an mg_get() first. | |
2539 | Normally used via the C<SvIV(sv)> and C<SvIVx(sv)> macros. | |
645c22ef DM |
2540 | |
2541 | =cut | |
2542 | */ | |
28e5dec8 | 2543 | |
a0d0e21e | 2544 | IV |
891f9566 | 2545 | Perl_sv_2iv_flags(pTHX_ register SV *sv, I32 flags) |
79072805 LW |
2546 | { |
2547 | if (!sv) | |
2548 | return 0; | |
8990e307 | 2549 | if (SvGMAGICAL(sv)) { |
891f9566 YST |
2550 | if (flags & SV_GMAGIC) |
2551 | mg_get(sv); | |
463ee0b2 LW |
2552 | if (SvIOKp(sv)) |
2553 | return SvIVX(sv); | |
748a9306 | 2554 | if (SvNOKp(sv)) { |
25da4f38 | 2555 | return I_V(SvNVX(sv)); |
748a9306 | 2556 | } |
36477c24 | 2557 | if (SvPOKp(sv) && SvLEN(sv)) |
2558 | return asIV(sv); | |
3fe9a6f1 | 2559 | if (!SvROK(sv)) { |
d008e5eb | 2560 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2561 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 2562 | report_uninit(sv); |
c6ee37c5 | 2563 | } |
36477c24 | 2564 | return 0; |
3fe9a6f1 | 2565 | } |
463ee0b2 | 2566 | } |
ed6116ce | 2567 | if (SvTHINKFIRST(sv)) { |
a0d0e21e | 2568 | if (SvROK(sv)) { |
a0d0e21e | 2569 | SV* tmpstr; |
1554e226 | 2570 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2571 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2572 | return SvIV(tmpstr); |
56431972 | 2573 | return PTR2IV(SvRV(sv)); |
a0d0e21e | 2574 | } |
765f542d NC |
2575 | if (SvIsCOW(sv)) { |
2576 | sv_force_normal_flags(sv, 0); | |
47deb5e7 | 2577 | } |
0336b60e | 2578 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2579 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2580 | report_uninit(sv); |
ed6116ce LW |
2581 | return 0; |
2582 | } | |
79072805 | 2583 | } |
25da4f38 IZ |
2584 | if (SvIOKp(sv)) { |
2585 | if (SvIsUV(sv)) { | |
2586 | return (IV)(SvUVX(sv)); | |
2587 | } | |
2588 | else { | |
2589 | return SvIVX(sv); | |
2590 | } | |
463ee0b2 | 2591 | } |
748a9306 | 2592 | if (SvNOKp(sv)) { |
28e5dec8 JH |
2593 | /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv |
2594 | * without also getting a cached IV/UV from it at the same time | |
2595 | * (ie PV->NV conversion should detect loss of accuracy and cache | |
2596 | * IV or UV at same time to avoid this. NWC */ | |
25da4f38 IZ |
2597 | |
2598 | if (SvTYPE(sv) == SVt_NV) | |
2599 | sv_upgrade(sv, SVt_PVNV); | |
2600 | ||
28e5dec8 JH |
2601 | (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */ |
2602 | /* < not <= as for NV doesn't preserve UV, ((NV)IV_MAX+1) will almost | |
2603 | certainly cast into the IV range at IV_MAX, whereas the correct | |
2604 | answer is the UV IV_MAX +1. Hence < ensures that dodgy boundary | |
2605 | cases go to UV */ | |
2606 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
748a9306 | 2607 | SvIVX(sv) = I_V(SvNVX(sv)); |
28e5dec8 JH |
2608 | if (SvNVX(sv) == (NV) SvIVX(sv) |
2609 | #ifndef NV_PRESERVES_UV | |
2610 | && (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2611 | (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv))) | |
2612 | /* Don't flag it as "accurately an integer" if the number | |
2613 | came from a (by definition imprecise) NV operation, and | |
2614 | we're outside the range of NV integer precision */ | |
2615 | #endif | |
2616 | ) { | |
2617 | SvIOK_on(sv); /* Can this go wrong with rounding? NWC */ | |
2618 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2619 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (precise)\n", |
28e5dec8 JH |
2620 | PTR2UV(sv), |
2621 | SvNVX(sv), | |
2622 | SvIVX(sv))); | |
2623 | ||
2624 | } else { | |
2625 | /* IV not precise. No need to convert from PV, as NV | |
2626 | conversion would already have cached IV if it detected | |
2627 | that PV->IV would be better than PV->NV->IV | |
2628 | flags already correct - don't set public IOK. */ | |
2629 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2630 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (imprecise)\n", |
28e5dec8 JH |
2631 | PTR2UV(sv), |
2632 | SvNVX(sv), | |
2633 | SvIVX(sv))); | |
2634 | } | |
2635 | /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN, | |
2636 | but the cast (NV)IV_MIN rounds to a the value less (more | |
2637 | negative) than IV_MIN which happens to be equal to SvNVX ?? | |
2638 | Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and | |
2639 | NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and | |
2640 | (NV)UVX == NVX are both true, but the values differ. :-( | |
2641 | Hopefully for 2s complement IV_MIN is something like | |
2642 | 0x8000000000000000 which will be exact. NWC */ | |
d460ef45 | 2643 | } |
25da4f38 | 2644 | else { |
ff68c719 | 2645 | SvUVX(sv) = U_V(SvNVX(sv)); |
28e5dec8 JH |
2646 | if ( |
2647 | (SvNVX(sv) == (NV) SvUVX(sv)) | |
2648 | #ifndef NV_PRESERVES_UV | |
2649 | /* Make sure it's not 0xFFFFFFFFFFFFFFFF */ | |
2650 | /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */ | |
2651 | && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv)) | |
2652 | /* Don't flag it as "accurately an integer" if the number | |
2653 | came from a (by definition imprecise) NV operation, and | |
2654 | we're outside the range of NV integer precision */ | |
2655 | #endif | |
2656 | ) | |
2657 | SvIOK_on(sv); | |
25da4f38 IZ |
2658 | SvIsUV_on(sv); |
2659 | ret_iv_max: | |
1c846c1f | 2660 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
57def98f | 2661 | "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n", |
56431972 | 2662 | PTR2UV(sv), |
57def98f JH |
2663 | SvUVX(sv), |
2664 | SvUVX(sv))); | |
25da4f38 IZ |
2665 | return (IV)SvUVX(sv); |
2666 | } | |
748a9306 LW |
2667 | } |
2668 | else if (SvPOKp(sv) && SvLEN(sv)) { | |
c2988b20 NC |
2669 | UV value; |
2670 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
25da4f38 IZ |
2671 | /* We want to avoid a possible problem when we cache an IV which |
2672 | may be later translated to an NV, and the resulting NV is not | |
c2988b20 NC |
2673 | the same as the direct translation of the initial string |
2674 | (eg 123.456 can shortcut to the IV 123 with atol(), but we must | |
2675 | be careful to ensure that the value with the .456 is around if the | |
2676 | NV value is requested in the future). | |
1c846c1f | 2677 | |
25da4f38 IZ |
2678 | This means that if we cache such an IV, we need to cache the |
2679 | NV as well. Moreover, we trade speed for space, and do not | |
28e5dec8 | 2680 | cache the NV if we are sure it's not needed. |
25da4f38 | 2681 | */ |
16b7a9a4 | 2682 | |
c2988b20 NC |
2683 | /* SVt_PVNV is one higher than SVt_PVIV, hence this order */ |
2684 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2685 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2686 | /* It's definitely an integer, only upgrade to PVIV */ |
28e5dec8 JH |
2687 | if (SvTYPE(sv) < SVt_PVIV) |
2688 | sv_upgrade(sv, SVt_PVIV); | |
f7bbb42a | 2689 | (void)SvIOK_on(sv); |
c2988b20 NC |
2690 | } else if (SvTYPE(sv) < SVt_PVNV) |
2691 | sv_upgrade(sv, SVt_PVNV); | |
28e5dec8 | 2692 | |
c2988b20 NC |
2693 | /* If NV preserves UV then we only use the UV value if we know that |
2694 | we aren't going to call atof() below. If NVs don't preserve UVs | |
2695 | then the value returned may have more precision than atof() will | |
2696 | return, even though value isn't perfectly accurate. */ | |
2697 | if ((numtype & (IS_NUMBER_IN_UV | |
2698 | #ifdef NV_PRESERVES_UV | |
2699 | | IS_NUMBER_NOT_INT | |
2700 | #endif | |
2701 | )) == IS_NUMBER_IN_UV) { | |
2702 | /* This won't turn off the public IOK flag if it was set above */ | |
2703 | (void)SvIOKp_on(sv); | |
2704 | ||
2705 | if (!(numtype & IS_NUMBER_NEG)) { | |
2706 | /* positive */; | |
2707 | if (value <= (UV)IV_MAX) { | |
2708 | SvIVX(sv) = (IV)value; | |
2709 | } else { | |
2710 | SvUVX(sv) = value; | |
2711 | SvIsUV_on(sv); | |
2712 | } | |
2713 | } else { | |
2714 | /* 2s complement assumption */ | |
2715 | if (value <= (UV)IV_MIN) { | |
2716 | SvIVX(sv) = -(IV)value; | |
2717 | } else { | |
2718 | /* Too negative for an IV. This is a double upgrade, but | |
d1be9408 | 2719 | I'm assuming it will be rare. */ |
c2988b20 NC |
2720 | if (SvTYPE(sv) < SVt_PVNV) |
2721 | sv_upgrade(sv, SVt_PVNV); | |
2722 | SvNOK_on(sv); | |
2723 | SvIOK_off(sv); | |
2724 | SvIOKp_on(sv); | |
2725 | SvNVX(sv) = -(NV)value; | |
2726 | SvIVX(sv) = IV_MIN; | |
2727 | } | |
2728 | } | |
2729 | } | |
2730 | /* For !NV_PRESERVES_UV and IS_NUMBER_IN_UV and IS_NUMBER_NOT_INT we | |
2731 | will be in the previous block to set the IV slot, and the next | |
2732 | block to set the NV slot. So no else here. */ | |
2733 | ||
2734 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2735 | != IS_NUMBER_IN_UV) { | |
2736 | /* It wasn't an (integer that doesn't overflow the UV). */ | |
2737 | SvNVX(sv) = Atof(SvPVX(sv)); | |
28e5dec8 | 2738 | |
c2988b20 NC |
2739 | if (! numtype && ckWARN(WARN_NUMERIC)) |
2740 | not_a_number(sv); | |
28e5dec8 | 2741 | |
65202027 | 2742 | #if defined(USE_LONG_DOUBLE) |
c2988b20 NC |
2743 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%" PERL_PRIgldbl ")\n", |
2744 | PTR2UV(sv), SvNVX(sv))); | |
65202027 | 2745 | #else |
1779d84d | 2746 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"NVgf")\n", |
c2988b20 | 2747 | PTR2UV(sv), SvNVX(sv))); |
65202027 | 2748 | #endif |
28e5dec8 JH |
2749 | |
2750 | ||
2751 | #ifdef NV_PRESERVES_UV | |
c2988b20 NC |
2752 | (void)SvIOKp_on(sv); |
2753 | (void)SvNOK_on(sv); | |
2754 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
2755 | SvIVX(sv) = I_V(SvNVX(sv)); | |
2756 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { | |
2757 | SvIOK_on(sv); | |
28e5dec8 | 2758 | } else { |
c2988b20 NC |
2759 | /* Integer is imprecise. NOK, IOKp */ |
2760 | } | |
2761 | /* UV will not work better than IV */ | |
2762 | } else { | |
2763 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2764 | SvIsUV_on(sv); | |
2765 | /* Integer is inaccurate. NOK, IOKp, is UV */ | |
2766 | SvUVX(sv) = UV_MAX; | |
2767 | SvIsUV_on(sv); | |
2768 | } else { | |
2769 | SvUVX(sv) = U_V(SvNVX(sv)); | |
2770 | /* 0xFFFFFFFFFFFFFFFF not an issue in here */ | |
2771 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
2772 | SvIOK_on(sv); | |
28e5dec8 JH |
2773 | SvIsUV_on(sv); |
2774 | } else { | |
c2988b20 NC |
2775 | /* Integer is imprecise. NOK, IOKp, is UV */ |
2776 | SvIsUV_on(sv); | |
28e5dec8 | 2777 | } |
28e5dec8 | 2778 | } |
c2988b20 NC |
2779 | goto ret_iv_max; |
2780 | } | |
28e5dec8 | 2781 | #else /* NV_PRESERVES_UV */ |
c2988b20 NC |
2782 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2783 | == (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) { | |
2784 | /* The IV slot will have been set from value returned by | |
2785 | grok_number above. The NV slot has just been set using | |
2786 | Atof. */ | |
560b0c46 | 2787 | SvNOK_on(sv); |
c2988b20 NC |
2788 | assert (SvIOKp(sv)); |
2789 | } else { | |
2790 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2791 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { | |
2792 | /* Small enough to preserve all bits. */ | |
2793 | (void)SvIOKp_on(sv); | |
2794 | SvNOK_on(sv); | |
2795 | SvIVX(sv) = I_V(SvNVX(sv)); | |
2796 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) | |
2797 | SvIOK_on(sv); | |
2798 | /* Assumption: first non-preserved integer is < IV_MAX, | |
2799 | this NV is in the preserved range, therefore: */ | |
2800 | if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)) | |
2801 | < (UV)IV_MAX)) { | |
32fdb065 | 2802 | 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 |
2803 | } |
2804 | } else { | |
2805 | /* IN_UV NOT_INT | |
2806 | 0 0 already failed to read UV. | |
2807 | 0 1 already failed to read UV. | |
2808 | 1 0 you won't get here in this case. IV/UV | |
2809 | slot set, public IOK, Atof() unneeded. | |
2810 | 1 1 already read UV. | |
2811 | so there's no point in sv_2iuv_non_preserve() attempting | |
2812 | to use atol, strtol, strtoul etc. */ | |
2813 | if (sv_2iuv_non_preserve (sv, numtype) | |
2814 | >= IS_NUMBER_OVERFLOW_IV) | |
2815 | goto ret_iv_max; | |
2816 | } | |
2817 | } | |
28e5dec8 | 2818 | #endif /* NV_PRESERVES_UV */ |
25da4f38 | 2819 | } |
28e5dec8 | 2820 | } else { |
599cee73 | 2821 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) |
29489e7c | 2822 | report_uninit(sv); |
25da4f38 IZ |
2823 | if (SvTYPE(sv) < SVt_IV) |
2824 | /* Typically the caller expects that sv_any is not NULL now. */ | |
2825 | sv_upgrade(sv, SVt_IV); | |
a0d0e21e | 2826 | return 0; |
79072805 | 2827 | } |
1d7c1841 GS |
2828 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n", |
2829 | PTR2UV(sv),SvIVX(sv))); | |
25da4f38 | 2830 | return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv); |
79072805 LW |
2831 | } |
2832 | ||
891f9566 YST |
2833 | /* sv_2uv() is now a macro using Perl_sv_2uv_flags(); |
2834 | * this function provided for binary compatibility only | |
2835 | */ | |
2836 | ||
2837 | UV | |
2838 | Perl_sv_2uv(pTHX_ register SV *sv) | |
2839 | { | |
2840 | return sv_2uv_flags(sv, SV_GMAGIC); | |
2841 | } | |
2842 | ||
645c22ef | 2843 | /* |
891f9566 | 2844 | =for apidoc sv_2uv_flags |
645c22ef DM |
2845 | |
2846 | Return the unsigned integer value of an SV, doing any necessary string | |
891f9566 YST |
2847 | conversion. If flags includes SV_GMAGIC, does an mg_get() first. |
2848 | Normally used via the C<SvUV(sv)> and C<SvUVx(sv)> macros. | |
645c22ef DM |
2849 | |
2850 | =cut | |
2851 | */ | |
2852 | ||
ff68c719 | 2853 | UV |
891f9566 | 2854 | Perl_sv_2uv_flags(pTHX_ register SV *sv, I32 flags) |
ff68c719 | 2855 | { |
2856 | if (!sv) | |
2857 | return 0; | |
2858 | if (SvGMAGICAL(sv)) { | |
891f9566 YST |
2859 | if (flags & SV_GMAGIC) |
2860 | mg_get(sv); | |
ff68c719 | 2861 | if (SvIOKp(sv)) |
2862 | return SvUVX(sv); | |
2863 | if (SvNOKp(sv)) | |
2864 | return U_V(SvNVX(sv)); | |
36477c24 | 2865 | if (SvPOKp(sv) && SvLEN(sv)) |
2866 | return asUV(sv); | |
3fe9a6f1 | 2867 | if (!SvROK(sv)) { |
d008e5eb | 2868 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2869 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 2870 | report_uninit(sv); |
c6ee37c5 | 2871 | } |
36477c24 | 2872 | return 0; |
3fe9a6f1 | 2873 | } |
ff68c719 | 2874 | } |
2875 | if (SvTHINKFIRST(sv)) { | |
2876 | if (SvROK(sv)) { | |
ff68c719 | 2877 | SV* tmpstr; |
1554e226 | 2878 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2879 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2880 | return SvUV(tmpstr); |
56431972 | 2881 | return PTR2UV(SvRV(sv)); |
ff68c719 | 2882 | } |
765f542d NC |
2883 | if (SvIsCOW(sv)) { |
2884 | sv_force_normal_flags(sv, 0); | |
8a818333 | 2885 | } |
0336b60e | 2886 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2887 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2888 | report_uninit(sv); |
ff68c719 | 2889 | return 0; |
2890 | } | |
2891 | } | |
25da4f38 IZ |
2892 | if (SvIOKp(sv)) { |
2893 | if (SvIsUV(sv)) { | |
2894 | return SvUVX(sv); | |
2895 | } | |
2896 | else { | |
2897 | return (UV)SvIVX(sv); | |
2898 | } | |
ff68c719 | 2899 | } |
2900 | if (SvNOKp(sv)) { | |
28e5dec8 JH |
2901 | /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv |
2902 | * without also getting a cached IV/UV from it at the same time | |
2903 | * (ie PV->NV conversion should detect loss of accuracy and cache | |
2904 | * IV or UV at same time to avoid this. */ | |
2905 | /* IV-over-UV optimisation - choose to cache IV if possible */ | |
2906 | ||
25da4f38 IZ |
2907 | if (SvTYPE(sv) == SVt_NV) |
2908 | sv_upgrade(sv, SVt_PVNV); | |
28e5dec8 JH |
2909 | |
2910 | (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */ | |
2911 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
f7bbb42a | 2912 | SvIVX(sv) = I_V(SvNVX(sv)); |
28e5dec8 JH |
2913 | if (SvNVX(sv) == (NV) SvIVX(sv) |
2914 | #ifndef NV_PRESERVES_UV | |
2915 | && (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2916 | (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv))) | |
2917 | /* Don't flag it as "accurately an integer" if the number | |
2918 | came from a (by definition imprecise) NV operation, and | |
2919 | we're outside the range of NV integer precision */ | |
2920 | #endif | |
2921 | ) { | |
2922 | SvIOK_on(sv); /* Can this go wrong with rounding? NWC */ | |
2923 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2924 | "0x%"UVxf" uv(%"NVgf" => %"IVdf") (precise)\n", |
28e5dec8 JH |
2925 | PTR2UV(sv), |
2926 | SvNVX(sv), | |
2927 | SvIVX(sv))); | |
2928 | ||
2929 | } else { | |
2930 | /* IV not precise. No need to convert from PV, as NV | |
2931 | conversion would already have cached IV if it detected | |
2932 | that PV->IV would be better than PV->NV->IV | |
2933 | flags already correct - don't set public IOK. */ | |
2934 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2935 | "0x%"UVxf" uv(%"NVgf" => %"IVdf") (imprecise)\n", |
28e5dec8 JH |
2936 | PTR2UV(sv), |
2937 | SvNVX(sv), | |
2938 | SvIVX(sv))); | |
2939 | } | |
2940 | /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN, | |
2941 | but the cast (NV)IV_MIN rounds to a the value less (more | |
2942 | negative) than IV_MIN which happens to be equal to SvNVX ?? | |
2943 | Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and | |
2944 | NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and | |
2945 | (NV)UVX == NVX are both true, but the values differ. :-( | |
2946 | Hopefully for 2s complement IV_MIN is something like | |
2947 | 0x8000000000000000 which will be exact. NWC */ | |
d460ef45 | 2948 | } |
28e5dec8 JH |
2949 | else { |
2950 | SvUVX(sv) = U_V(SvNVX(sv)); | |
2951 | if ( | |
2952 | (SvNVX(sv) == (NV) SvUVX(sv)) | |
2953 | #ifndef NV_PRESERVES_UV | |
2954 | /* Make sure it's not 0xFFFFFFFFFFFFFFFF */ | |
2955 | /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */ | |
2956 | && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv)) | |
2957 | /* Don't flag it as "accurately an integer" if the number | |
2958 | came from a (by definition imprecise) NV operation, and | |
2959 | we're outside the range of NV integer precision */ | |
2960 | #endif | |
2961 | ) | |
2962 | SvIOK_on(sv); | |
2963 | SvIsUV_on(sv); | |
1c846c1f | 2964 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
28e5dec8 | 2965 | "0x%"UVxf" 2uv(%"UVuf" => %"IVdf") (as unsigned)\n", |
57def98f | 2966 | PTR2UV(sv), |
28e5dec8 JH |
2967 | SvUVX(sv), |
2968 | SvUVX(sv))); | |
25da4f38 | 2969 | } |
ff68c719 | 2970 | } |
2971 | else if (SvPOKp(sv) && SvLEN(sv)) { | |
c2988b20 NC |
2972 | UV value; |
2973 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
25da4f38 IZ |
2974 | |
2975 | /* We want to avoid a possible problem when we cache a UV which | |
2976 | may be later translated to an NV, and the resulting NV is not | |
2977 | the translation of the initial data. | |
1c846c1f | 2978 | |
25da4f38 IZ |
2979 | This means that if we cache such a UV, we need to cache the |
2980 | NV as well. Moreover, we trade speed for space, and do not | |
2981 | cache the NV if not needed. | |
2982 | */ | |
16b7a9a4 | 2983 | |
c2988b20 NC |
2984 | /* SVt_PVNV is one higher than SVt_PVIV, hence this order */ |
2985 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2986 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2987 | /* It's definitely an integer, only upgrade to PVIV */ |
28e5dec8 | 2988 | if (SvTYPE(sv) < SVt_PVIV) |
f7bbb42a JH |
2989 | sv_upgrade(sv, SVt_PVIV); |
2990 | (void)SvIOK_on(sv); | |
c2988b20 NC |
2991 | } else if (SvTYPE(sv) < SVt_PVNV) |
2992 | sv_upgrade(sv, SVt_PVNV); | |
d460ef45 | 2993 | |
c2988b20 NC |
2994 | /* If NV preserves UV then we only use the UV value if we know that |
2995 | we aren't going to call atof() below. If NVs don't preserve UVs | |
2996 | then the value returned may have more precision than atof() will | |
2997 | return, even though it isn't accurate. */ | |
2998 | if ((numtype & (IS_NUMBER_IN_UV | |
2999 | #ifdef NV_PRESERVES_UV | |
3000 | | IS_NUMBER_NOT_INT | |
3001 | #endif | |
3002 | )) == IS_NUMBER_IN_UV) { | |
3003 | /* This won't turn off the public IOK flag if it was set above */ | |
3004 | (void)SvIOKp_on(sv); | |
3005 | ||
3006 | if (!(numtype & IS_NUMBER_NEG)) { | |
3007 | /* positive */; | |
3008 | if (value <= (UV)IV_MAX) { | |
3009 | SvIVX(sv) = (IV)value; | |
28e5dec8 JH |
3010 | } else { |
3011 | /* it didn't overflow, and it was positive. */ | |
c2988b20 | 3012 | SvUVX(sv) = value; |
28e5dec8 JH |
3013 | SvIsUV_on(sv); |
3014 | } | |
c2988b20 NC |
3015 | } else { |
3016 | /* 2s complement assumption */ | |
3017 | if (value <= (UV)IV_MIN) { | |
3018 | SvIVX(sv) = -(IV)value; | |
3019 | } else { | |
3020 | /* Too negative for an IV. This is a double upgrade, but | |
d1be9408 | 3021 | I'm assuming it will be rare. */ |
c2988b20 NC |
3022 | if (SvTYPE(sv) < SVt_PVNV) |
3023 | sv_upgrade(sv, SVt_PVNV); | |
3024 | SvNOK_on(sv); | |
3025 | SvIOK_off(sv); | |
3026 | SvIOKp_on(sv); | |
3027 | SvNVX(sv) = -(NV)value; | |
3028 | SvIVX(sv) = IV_MIN; | |
3029 | } | |
3030 | } | |
3031 | } | |
3032 | ||
3033 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
3034 | != IS_NUMBER_IN_UV) { | |
3035 | /* It wasn't an integer, or it overflowed the UV. */ | |
3036 | SvNVX(sv) = Atof(SvPVX(sv)); | |
28e5dec8 | 3037 | |
c2988b20 | 3038 | if (! numtype && ckWARN(WARN_NUMERIC)) |
28e5dec8 JH |
3039 | not_a_number(sv); |
3040 | ||
3041 | #if defined(USE_LONG_DOUBLE) | |
c2988b20 NC |
3042 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%" PERL_PRIgldbl ")\n", |
3043 | PTR2UV(sv), SvNVX(sv))); | |
28e5dec8 | 3044 | #else |
1779d84d | 3045 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"NVgf")\n", |
c2988b20 | 3046 | PTR2UV(sv), SvNVX(sv))); |
28e5dec8 JH |
3047 | #endif |
3048 | ||
3049 | #ifdef NV_PRESERVES_UV | |
c2988b20 NC |
3050 | (void)SvIOKp_on(sv); |
3051 | (void)SvNOK_on(sv); | |
3052 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
3053 | SvIVX(sv) = I_V(SvNVX(sv)); | |
3054 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { | |
3055 | SvIOK_on(sv); | |
3056 | } else { | |
3057 | /* Integer is imprecise. NOK, IOKp */ | |
3058 | } | |
3059 | /* UV will not work better than IV */ | |
3060 | } else { | |
3061 | if (SvNVX(sv) > (NV)UV_MAX) { | |
3062 | SvIsUV_on(sv); | |
3063 | /* Integer is inaccurate. NOK, IOKp, is UV */ | |
3064 | SvUVX(sv) = UV_MAX; | |
3065 | SvIsUV_on(sv); | |
3066 | } else { | |
3067 | SvUVX(sv) = U_V(SvNVX(sv)); | |
3068 | /* 0xFFFFFFFFFFFFFFFF not an issue in here, NVs | |
3069 | NV preservse UV so can do correct comparison. */ | |
3070 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
3071 | SvIOK_on(sv); | |
3072 | SvIsUV_on(sv); | |
3073 | } else { | |
3074 | /* Integer is imprecise. NOK, IOKp, is UV */ | |
3075 | SvIsUV_on(sv); | |
3076 | } | |
3077 | } | |
3078 | } | |
28e5dec8 | 3079 | #else /* NV_PRESERVES_UV */ |
c2988b20 NC |
3080 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
3081 | == (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) { | |
3082 | /* The UV slot will have been set from value returned by | |
3083 | grok_number above. The NV slot has just been set using | |
3084 | Atof. */ | |
560b0c46 | 3085 | SvNOK_on(sv); |
c2988b20 NC |
3086 | assert (SvIOKp(sv)); |
3087 | } else { | |
3088 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
3089 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { | |
3090 | /* Small enough to preserve all bits. */ | |
3091 | (void)SvIOKp_on(sv); | |
3092 | SvNOK_on(sv); | |
3093 | SvIVX(sv) = I_V(SvNVX(sv)); | |
3094 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) | |
3095 | SvIOK_on(sv); | |
3096 | /* Assumption: first non-preserved integer is < IV_MAX, | |
3097 | this NV is in the preserved range, therefore: */ | |
3098 | if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)) | |
3099 | < (UV)IV_MAX)) { | |
32fdb065 | 3100 | 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 |
3101 | } |
3102 | } else | |
3103 | sv_2iuv_non_preserve (sv, numtype); | |
3104 | } | |
28e5dec8 | 3105 | #endif /* NV_PRESERVES_UV */ |
f7bbb42a | 3106 | } |
ff68c719 | 3107 | } |
3108 | else { | |
d008e5eb | 3109 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 3110 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 3111 | report_uninit(sv); |
c6ee37c5 | 3112 | } |
25da4f38 IZ |
3113 | if (SvTYPE(sv) < SVt_IV) |
3114 | /* Typically the caller expects that sv_any is not NULL now. */ | |
3115 | sv_upgrade(sv, SVt_IV); | |
ff68c719 | 3116 | return 0; |
3117 | } | |
25da4f38 | 3118 | |
1d7c1841 GS |
3119 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n", |
3120 | PTR2UV(sv),SvUVX(sv))); | |
25da4f38 | 3121 | return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv); |
ff68c719 | 3122 | } |
3123 | ||
645c22ef DM |
3124 | /* |
3125 | =for apidoc sv_2nv | |
3126 | ||
3127 | Return the num value of an SV, doing any necessary string or integer | |
3128 | conversion, magic etc. Normally used via the C<SvNV(sv)> and C<SvNVx(sv)> | |
3129 | macros. | |
3130 | ||
3131 | =cut | |
3132 | */ | |
3133 | ||
65202027 | 3134 | NV |
864dbfa3 | 3135 | Perl_sv_2nv(pTHX_ register SV *sv) |
79072805 LW |
3136 | { |
3137 | if (!sv) | |
3138 | return 0.0; | |
8990e307 | 3139 | if (SvGMAGICAL(sv)) { |
463ee0b2 LW |
3140 | mg_get(sv); |
3141 | if (SvNOKp(sv)) | |
3142 | return SvNVX(sv); | |
a0d0e21e | 3143 | if (SvPOKp(sv) && SvLEN(sv)) { |
c2988b20 NC |
3144 | if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && |
3145 | !grok_number(SvPVX(sv), SvCUR(sv), NULL)) | |
a0d0e21e | 3146 | not_a_number(sv); |
097ee67d | 3147 | return Atof(SvPVX(sv)); |
a0d0e21e | 3148 | } |
25da4f38 | 3149 | if (SvIOKp(sv)) { |
1c846c1f | 3150 | if (SvIsUV(sv)) |
65202027 | 3151 | return (NV)SvUVX(sv); |
25da4f38 | 3152 | else |
65202027 | 3153 | return (NV)SvIVX(sv); |
25da4f38 | 3154 | } |
16d20bd9 | 3155 | if (!SvROK(sv)) { |
d008e5eb | 3156 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 3157 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 3158 | report_uninit(sv); |
c6ee37c5 | 3159 | } |
16d20bd9 AD |
3160 | return 0; |
3161 | } | |
463ee0b2 | 3162 | } |
ed6116ce | 3163 | if (SvTHINKFIRST(sv)) { |
a0d0e21e | 3164 | if (SvROK(sv)) { |
a0d0e21e | 3165 | SV* tmpstr; |
1554e226 | 3166 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 3167 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 3168 | return SvNV(tmpstr); |
56431972 | 3169 | return PTR2NV(SvRV(sv)); |
a0d0e21e | 3170 | } |
765f542d NC |
3171 | if (SvIsCOW(sv)) { |
3172 | sv_force_normal_flags(sv, 0); | |
8a818333 | 3173 | } |
0336b60e | 3174 | if (SvREADONLY(sv) && !SvOK(sv)) { |
599cee73 | 3175 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 3176 | report_uninit(sv); |
ed6116ce LW |
3177 | return 0.0; |
3178 | } | |
79072805 LW |
3179 | } |
3180 | if (SvTYPE(sv) < SVt_NV) { | |
463ee0b2 LW |
3181 | if (SvTYPE(sv) == SVt_IV) |
3182 | sv_upgrade(sv, SVt_PVNV); | |
3183 | else | |
3184 | sv_upgrade(sv, SVt_NV); | |
906f284f | 3185 | #ifdef USE_LONG_DOUBLE |
097ee67d | 3186 | DEBUG_c({ |
f93f4e46 | 3187 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
3188 | PerlIO_printf(Perl_debug_log, |
3189 | "0x%"UVxf" num(%" PERL_PRIgldbl ")\n", | |
3190 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
3191 | RESTORE_NUMERIC_LOCAL(); |
3192 | }); | |
65202027 | 3193 | #else |
572bbb43 | 3194 | DEBUG_c({ |
f93f4e46 | 3195 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 3196 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%"NVgf")\n", |
1d7c1841 | 3197 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
3198 | RESTORE_NUMERIC_LOCAL(); |
3199 | }); | |
572bbb43 | 3200 | #endif |
79072805 LW |
3201 | } |
3202 | else if (SvTYPE(sv) < SVt_PVNV) | |
3203 | sv_upgrade(sv, SVt_PVNV); | |
59d8ce62 NC |
3204 | if (SvNOKp(sv)) { |
3205 | return SvNVX(sv); | |
61604483 | 3206 | } |
59d8ce62 | 3207 | if (SvIOKp(sv)) { |
65202027 | 3208 | SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv); |
28e5dec8 JH |
3209 | #ifdef NV_PRESERVES_UV |
3210 | SvNOK_on(sv); | |
3211 | #else | |
3212 | /* Only set the public NV OK flag if this NV preserves the IV */ | |
3213 | /* Check it's not 0xFFFFFFFFFFFFFFFF */ | |
3214 | if (SvIsUV(sv) ? ((SvUVX(sv) != UV_MAX)&&(SvUVX(sv) == U_V(SvNVX(sv)))) | |
3215 | : (SvIVX(sv) == I_V(SvNVX(sv)))) | |
3216 | SvNOK_on(sv); | |
3217 | else | |
3218 | SvNOKp_on(sv); | |
3219 | #endif | |
93a17b20 | 3220 | } |
748a9306 | 3221 | else if (SvPOKp(sv) && SvLEN(sv)) { |
c2988b20 NC |
3222 | UV value; |
3223 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
3224 | if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !numtype) | |
a0d0e21e | 3225 | not_a_number(sv); |
28e5dec8 | 3226 | #ifdef NV_PRESERVES_UV |
c2988b20 NC |
3227 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
3228 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 3229 | /* It's definitely an integer */ |
c2988b20 NC |
3230 | SvNVX(sv) = (numtype & IS_NUMBER_NEG) ? -(NV)value : (NV)value; |
3231 | } else | |
3232 | SvNVX(sv) = Atof(SvPVX(sv)); | |
28e5dec8 JH |
3233 | SvNOK_on(sv); |
3234 | #else | |
c2988b20 | 3235 | SvNVX(sv) = Atof(SvPVX(sv)); |
28e5dec8 JH |
3236 | /* Only set the public NV OK flag if this NV preserves the value in |
3237 | the PV at least as well as an IV/UV would. | |
3238 | Not sure how to do this 100% reliably. */ | |
3239 | /* if that shift count is out of range then Configure's test is | |
3240 | wonky. We shouldn't be in here with NV_PRESERVES_UV_BITS == | |
3241 | UV_BITS */ | |
3242 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
c2988b20 | 3243 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { |
28e5dec8 | 3244 | SvNOK_on(sv); /* Definitely small enough to preserve all bits */ |
c2988b20 NC |
3245 | } else if (!(numtype & IS_NUMBER_IN_UV)) { |
3246 | /* Can't use strtol etc to convert this string, so don't try. | |
3247 | sv_2iv and sv_2uv will use the NV to convert, not the PV. */ | |
3248 | SvNOK_on(sv); | |
3249 | } else { | |
3250 | /* value has been set. It may not be precise. */ | |
3251 | if ((numtype & IS_NUMBER_NEG) && (value > (UV)IV_MIN)) { | |
3252 | /* 2s complement assumption for (UV)IV_MIN */ | |
3253 | SvNOK_on(sv); /* Integer is too negative. */ | |
3254 | } else { | |
3255 | SvNOKp_on(sv); | |
3256 | SvIOKp_on(sv); | |
6fa402ec | 3257 | |
c2988b20 NC |
3258 | if (numtype & IS_NUMBER_NEG) { |
3259 | SvIVX(sv) = -(IV)value; | |
3260 | } else if (value <= (UV)IV_MAX) { | |
3261 | SvIVX(sv) = (IV)value; | |
3262 | } else { | |
3263 | SvUVX(sv) = value; | |
3264 | SvIsUV_on(sv); | |
3265 | } | |
3266 | ||
3267 | if (numtype & IS_NUMBER_NOT_INT) { | |
3268 | /* I believe that even if the original PV had decimals, | |
3269 | they are lost beyond the limit of the FP precision. | |
3270 | However, neither is canonical, so both only get p | |
3271 | flags. NWC, 2000/11/25 */ | |
3272 | /* Both already have p flags, so do nothing */ | |
3273 | } else { | |
3274 | NV nv = SvNVX(sv); | |
3275 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
3276 | if (SvIVX(sv) == I_V(nv)) { | |
3277 | SvNOK_on(sv); | |
3278 | SvIOK_on(sv); | |
3279 | } else { | |
3280 | SvIOK_on(sv); | |
3281 | /* It had no "." so it must be integer. */ | |
3282 | } | |
3283 | } else { | |
3284 | /* between IV_MAX and NV(UV_MAX). | |
3285 | Could be slightly > UV_MAX */ | |
6fa402ec | 3286 | |
c2988b20 NC |
3287 | if (numtype & IS_NUMBER_NOT_INT) { |
3288 | /* UV and NV both imprecise. */ | |
3289 | } else { | |
3290 | UV nv_as_uv = U_V(nv); | |
3291 | ||
3292 | if (value == nv_as_uv && SvUVX(sv) != UV_MAX) { | |
3293 | SvNOK_on(sv); | |
3294 | SvIOK_on(sv); | |
3295 | } else { | |
3296 | SvIOK_on(sv); | |
3297 | } | |
3298 | } | |
3299 | } | |
3300 | } | |
3301 | } | |
3302 | } | |
28e5dec8 | 3303 | #endif /* NV_PRESERVES_UV */ |
93a17b20 | 3304 | } |
79072805 | 3305 | else { |
599cee73 | 3306 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) |
29489e7c | 3307 | report_uninit(sv); |
25da4f38 IZ |
3308 | if (SvTYPE(sv) < SVt_NV) |
3309 | /* Typically the caller expects that sv_any is not NULL now. */ | |
28e5dec8 JH |
3310 | /* XXX Ilya implies that this is a bug in callers that assume this |
3311 | and ideally should be fixed. */ | |
25da4f38 | 3312 | sv_upgrade(sv, SVt_NV); |
a0d0e21e | 3313 | return 0.0; |
79072805 | 3314 | } |
572bbb43 | 3315 | #if defined(USE_LONG_DOUBLE) |
097ee67d | 3316 | DEBUG_c({ |
f93f4e46 | 3317 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
3318 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n", |
3319 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
3320 | RESTORE_NUMERIC_LOCAL(); |
3321 | }); | |
65202027 | 3322 | #else |
572bbb43 | 3323 | DEBUG_c({ |
f93f4e46 | 3324 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 3325 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%"NVgf")\n", |
1d7c1841 | 3326 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
3327 | RESTORE_NUMERIC_LOCAL(); |
3328 | }); | |
572bbb43 | 3329 | #endif |
463ee0b2 | 3330 | return SvNVX(sv); |
79072805 LW |
3331 | } |
3332 | ||
645c22ef DM |
3333 | /* asIV(): extract an integer from the string value of an SV. |
3334 | * Caller must validate PVX */ | |
3335 | ||
76e3520e | 3336 | STATIC IV |
cea2e8a9 | 3337 | S_asIV(pTHX_ SV *sv) |
36477c24 | 3338 | { |
c2988b20 NC |
3339 | UV value; |
3340 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
3341 | ||
3342 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
3343 | == IS_NUMBER_IN_UV) { | |
645c22ef | 3344 | /* It's definitely an integer */ |
c2988b20 NC |
3345 | if (numtype & IS_NUMBER_NEG) { |
3346 | if (value < (UV)IV_MIN) | |
3347 | return -(IV)value; | |
3348 | } else { | |
3349 | if (value < (UV)IV_MAX) | |
3350 | return (IV)value; | |
3351 | } | |
3352 | } | |
d008e5eb | 3353 | if (!numtype) { |
d008e5eb GS |
3354 | if (ckWARN(WARN_NUMERIC)) |
3355 | not_a_number(sv); | |
3356 | } | |
c2988b20 | 3357 | return I_V(Atof(SvPVX(sv))); |
36477c24 | 3358 | } |
3359 | ||
645c22ef DM |
3360 | /* asUV(): extract an unsigned integer from the string value of an SV |
3361 | * Caller must validate PVX */ | |
3362 | ||
76e3520e | 3363 | STATIC UV |
cea2e8a9 | 3364 | S_asUV(pTHX_ SV *sv) |
36477c24 | 3365 | { |
c2988b20 NC |
3366 | UV value; |
3367 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
36477c24 | 3368 | |
c2988b20 NC |
3369 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
3370 | == IS_NUMBER_IN_UV) { | |
645c22ef | 3371 | /* It's definitely an integer */ |
6fa402ec | 3372 | if (!(numtype & IS_NUMBER_NEG)) |
c2988b20 NC |
3373 | return value; |
3374 | } | |
d008e5eb | 3375 | if (!numtype) { |
d008e5eb GS |
3376 | if (ckWARN(WARN_NUMERIC)) |
3377 | not_a_number(sv); | |
3378 | } | |
097ee67d | 3379 | return U_V(Atof(SvPVX(sv))); |
36477c24 | 3380 | } |
3381 | ||
645c22ef DM |
3382 | /* |
3383 | =for apidoc sv_2pv_nolen | |
3384 | ||
3385 | Like C<sv_2pv()>, but doesn't return the length too. You should usually | |
3386 | use the macro wrapper C<SvPV_nolen(sv)> instead. | |
3387 | =cut | |
3388 | */ | |
3389 | ||
79072805 | 3390 | char * |
864dbfa3 | 3391 | Perl_sv_2pv_nolen(pTHX_ register SV *sv) |
1fa8b10d JD |
3392 | { |
3393 | STRLEN n_a; | |
3394 | return sv_2pv(sv, &n_a); | |
3395 | } | |
3396 | ||
645c22ef DM |
3397 | /* uiv_2buf(): private routine for use by sv_2pv_flags(): print an IV or |
3398 | * UV as a string towards the end of buf, and return pointers to start and | |
3399 | * end of it. | |
3400 | * | |
3401 | * We assume that buf is at least TYPE_CHARS(UV) long. | |
3402 | */ | |
3403 | ||
864dbfa3 | 3404 | static char * |
25da4f38 IZ |
3405 | uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob) |
3406 | { | |
25da4f38 IZ |
3407 | char *ptr = buf + TYPE_CHARS(UV); |
3408 | char *ebuf = ptr; | |
3409 | int sign; | |
25da4f38 IZ |
3410 | |
3411 | if (is_uv) | |
3412 | sign = 0; | |
3413 | else if (iv >= 0) { | |
3414 | uv = iv; | |
3415 | sign = 0; | |
3416 | } else { | |
3417 | uv = -iv; | |
3418 | sign = 1; | |
3419 | } | |
3420 | do { | |
eb160463 | 3421 | *--ptr = '0' + (char)(uv % 10); |
25da4f38 IZ |
3422 | } while (uv /= 10); |
3423 | if (sign) | |
3424 | *--ptr = '-'; | |
3425 | *peob = ebuf; | |
3426 | return ptr; | |
3427 | } | |
3428 | ||
09540bc3 JH |
3429 | /* sv_2pv() is now a macro using Perl_sv_2pv_flags(); |
3430 | * this function provided for binary compatibility only | |
3431 | */ | |
3432 | ||
3433 | char * | |
3434 | Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp) | |
3435 | { | |
3436 | return sv_2pv_flags(sv, lp, SV_GMAGIC); | |
3437 | } | |
3438 | ||
645c22ef DM |
3439 | /* |
3440 | =for apidoc sv_2pv_flags | |
3441 | ||
ff276b08 | 3442 | Returns a pointer to the string value of an SV, and sets *lp to its length. |
645c22ef DM |
3443 | If flags includes SV_GMAGIC, does an mg_get() first. Coerces sv to a string |
3444 | if necessary. | |
3445 | Normally invoked via the C<SvPV_flags> macro. C<sv_2pv()> and C<sv_2pv_nomg> | |
3446 | usually end up here too. | |
3447 | ||
3448 | =cut | |
3449 | */ | |
3450 | ||
8d6d96c1 HS |
3451 | char * |
3452 | Perl_sv_2pv_flags(pTHX_ register SV *sv, STRLEN *lp, I32 flags) | |
3453 | { | |
79072805 LW |
3454 | register char *s; |
3455 | int olderrno; | |
cb50f42d | 3456 | SV *tsv, *origsv; |
25da4f38 IZ |
3457 | char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */ |
3458 | char *tmpbuf = tbuf; | |
79072805 | 3459 | |
463ee0b2 LW |
3460 | if (!sv) { |
3461 | *lp = 0; | |
3462 | return ""; | |
3463 | } | |
8990e307 | 3464 | if (SvGMAGICAL(sv)) { |
8d6d96c1 HS |
3465 | if (flags & SV_GMAGIC) |
3466 | mg_get(sv); | |
463ee0b2 LW |
3467 | if (SvPOKp(sv)) { |
3468 | *lp = SvCUR(sv); | |
3469 | return SvPVX(sv); | |
3470 | } | |
cf2093f6 | 3471 | if (SvIOKp(sv)) { |
1c846c1f | 3472 | if (SvIsUV(sv)) |
57def98f | 3473 | (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv)); |
cf2093f6 | 3474 | else |
57def98f | 3475 | (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv)); |
46fc3d4c | 3476 | tsv = Nullsv; |
a0d0e21e | 3477 | goto tokensave; |
463ee0b2 LW |
3478 | } |
3479 | if (SvNOKp(sv)) { | |
2d4389e4 | 3480 | Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf); |
46fc3d4c | 3481 | tsv = Nullsv; |
a0d0e21e | 3482 | goto tokensave; |
463ee0b2 | 3483 | } |
16d20bd9 | 3484 | if (!SvROK(sv)) { |
d008e5eb | 3485 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 3486 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 3487 | report_uninit(sv); |
c6ee37c5 | 3488 | } |
16d20bd9 AD |
3489 | *lp = 0; |
3490 | return ""; | |
3491 | } | |
463ee0b2 | 3492 | } |
ed6116ce LW |
3493 | if (SvTHINKFIRST(sv)) { |
3494 | if (SvROK(sv)) { | |
a0d0e21e | 3495 | SV* tmpstr; |
1554e226 | 3496 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) && |
b4b9a328 | 3497 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) { |
446eaa42 YST |
3498 | char *pv = SvPV(tmpstr, *lp); |
3499 | if (SvUTF8(tmpstr)) | |
3500 | SvUTF8_on(sv); | |
3501 | else | |
3502 | SvUTF8_off(sv); | |
3503 | return pv; | |
3504 | } | |
cb50f42d | 3505 | origsv = sv; |
ed6116ce LW |
3506 | sv = (SV*)SvRV(sv); |
3507 | if (!sv) | |
3508 | s = "NULLREF"; | |
3509 | else { | |
f9277f47 IZ |
3510 | MAGIC *mg; |
3511 | ||
ed6116ce | 3512 | switch (SvTYPE(sv)) { |
f9277f47 IZ |
3513 | case SVt_PVMG: |
3514 | if ( ((SvFLAGS(sv) & | |
1c846c1f | 3515 | (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG)) |
faf82a0b | 3516 | == (SVs_OBJECT|SVs_SMG)) |
14befaf4 | 3517 | && (mg = mg_find(sv, PERL_MAGIC_qr))) { |
2cd61cdb | 3518 | regexp *re = (regexp *)mg->mg_obj; |
1bd3ad17 | 3519 | |
2cd61cdb | 3520 | if (!mg->mg_ptr) { |
8782bef2 GB |
3521 | char *fptr = "msix"; |
3522 | char reflags[6]; | |
3523 | char ch; | |
3524 | int left = 0; | |
3525 | int right = 4; | |
ff385a1b | 3526 | char need_newline = 0; |
eb160463 | 3527 | U16 reganch = (U16)((re->reganch & PMf_COMPILETIME) >> 12); |
8782bef2 | 3528 | |
155aba94 | 3529 | while((ch = *fptr++)) { |
8782bef2 GB |
3530 | if(reganch & 1) { |
3531 | reflags[left++] = ch; | |
3532 | } | |
3533 | else { | |
3534 | reflags[right--] = ch; | |
3535 | } | |
3536 | reganch >>= 1; | |
3537 | } | |
3538 | if(left != 4) { | |
3539 | reflags[left] = '-'; | |
3540 | left = 5; | |
3541 | } | |
3542 | ||
3543 | mg->mg_len = re->prelen + 4 + left; | |
ff385a1b JF |
3544 | /* |
3545 | * If /x was used, we have to worry about a regex | |
3546 | * ending with a comment later being embedded | |
3547 | * within another regex. If so, we don't want this | |
3548 | * regex's "commentization" to leak out to the | |
3549 | * right part of the enclosing regex, we must cap | |
3550 | * it with a newline. | |
3551 | * | |
3552 | * So, if /x was used, we scan backwards from the | |
3553 | * end of the regex. If we find a '#' before we | |
3554 | * find a newline, we need to add a newline | |
3555 | * ourself. If we find a '\n' first (or if we | |
3556 | * don't find '#' or '\n'), we don't need to add | |
3557 | * anything. -jfriedl | |
3558 | */ | |
3559 | if (PMf_EXTENDED & re->reganch) | |
3560 | { | |
3561 | char *endptr = re->precomp + re->prelen; | |
3562 | while (endptr >= re->precomp) | |
3563 | { | |
3564 | char c = *(endptr--); | |
3565 | if (c == '\n') | |
3566 | break; /* don't need another */ | |
3567 | if (c == '#') { | |
3568 | /* we end while in a comment, so we | |
3569 | need a newline */ | |
3570 | mg->mg_len++; /* save space for it */ | |
3571 | need_newline = 1; /* note to add it */ | |
ab01544f | 3572 | break; |
ff385a1b JF |
3573 | } |
3574 | } | |
3575 | } | |
3576 | ||
8782bef2 GB |
3577 | New(616, mg->mg_ptr, mg->mg_len + 1 + left, char); |
3578 | Copy("(?", mg->mg_ptr, 2, char); | |
3579 | Copy(reflags, mg->mg_ptr+2, left, char); | |
3580 | Copy(":", mg->mg_ptr+left+2, 1, char); | |
3581 | Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char); | |
ff385a1b JF |
3582 | if (need_newline) |
3583 | mg->mg_ptr[mg->mg_len - 2] = '\n'; | |
1bd3ad17 IZ |
3584 | mg->mg_ptr[mg->mg_len - 1] = ')'; |
3585 | mg->mg_ptr[mg->mg_len] = 0; | |
3586 | } | |
3280af22 | 3587 | PL_reginterp_cnt += re->program[0].next_off; |
cb50f42d YST |
3588 | |
3589 | if (re->reganch & ROPT_UTF8) | |
3590 | SvUTF8_on(origsv); | |
3591 | else | |
3592 | SvUTF8_off(origsv); | |
1bd3ad17 IZ |
3593 | *lp = mg->mg_len; |
3594 | return mg->mg_ptr; | |
f9277f47 IZ |
3595 | } |
3596 | /* Fall through */ | |
ed6116ce LW |
3597 | case SVt_NULL: |
3598 | case SVt_IV: | |
3599 | case SVt_NV: | |
3600 | case SVt_RV: | |
3601 | case SVt_PV: | |
3602 | case SVt_PVIV: | |
3603 | case SVt_PVNV: | |
81689caa HS |
3604 | case SVt_PVBM: if (SvROK(sv)) |
3605 | s = "REF"; | |
3606 | else | |
3607 | s = "SCALAR"; break; | |
be65207d DM |
3608 | case SVt_PVLV: s = SvROK(sv) ? "REF" |
3609 | /* tied lvalues should appear to be | |
3610 | * scalars for backwards compatitbility */ | |
3611 | : (LvTYPE(sv) == 't' || LvTYPE(sv) == 'T') | |
3612 | ? "SCALAR" : "LVALUE"; break; | |
ed6116ce LW |
3613 | case SVt_PVAV: s = "ARRAY"; break; |
3614 | case SVt_PVHV: s = "HASH"; break; | |
3615 | case SVt_PVCV: s = "CODE"; break; | |
3616 | case SVt_PVGV: s = "GLOB"; break; | |
1d2dff63 | 3617 | case SVt_PVFM: s = "FORMAT"; break; |
36477c24 | 3618 | case SVt_PVIO: s = "IO"; break; |
ed6116ce LW |
3619 | default: s = "UNKNOWN"; break; |
3620 | } | |
46fc3d4c | 3621 | tsv = NEWSV(0,0); |
de11ba31 | 3622 | if (SvOBJECT(sv)) |
e27ad1f2 AV |
3623 | if (HvNAME(SvSTASH(sv))) |
3624 | Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s); | |
3625 | else | |
3626 | Perl_sv_setpvf(aTHX_ tsv, "__ANON__=%s", s); | |
ed6116ce | 3627 | else |
46fc3d4c | 3628 | sv_setpv(tsv, s); |
57def98f | 3629 | Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv)); |
a0d0e21e | 3630 | goto tokensaveref; |
463ee0b2 | 3631 | } |
ed6116ce LW |
3632 | *lp = strlen(s); |
3633 | return s; | |
79072805 | 3634 | } |
0336b60e | 3635 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 3636 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 3637 | report_uninit(sv); |
ed6116ce LW |
3638 | *lp = 0; |
3639 | return ""; | |
79072805 | 3640 | } |
79072805 | 3641 | } |
28e5dec8 JH |
3642 | if (SvIOK(sv) || ((SvIOKp(sv) && !SvNOKp(sv)))) { |
3643 | /* I'm assuming that if both IV and NV are equally valid then | |
3644 | converting the IV is going to be more efficient */ | |
3645 | U32 isIOK = SvIOK(sv); | |
3646 | U32 isUIOK = SvIsUV(sv); | |
3647 | char buf[TYPE_CHARS(UV)]; | |
3648 | char *ebuf, *ptr; | |
3649 | ||
3650 | if (SvTYPE(sv) < SVt_PVIV) | |
3651 | sv_upgrade(sv, SVt_PVIV); | |
3652 | if (isUIOK) | |
3653 | ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf); | |
3654 | else | |
3655 | ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf); | |
eb160463 | 3656 | SvGROW(sv, (STRLEN)(ebuf - ptr + 1)); /* inlined from sv_setpvn */ |
28e5dec8 JH |
3657 | Move(ptr,SvPVX(sv),ebuf - ptr,char); |
3658 | SvCUR_set(sv, ebuf - ptr); | |
3659 | s = SvEND(sv); | |
3660 | *s = '\0'; | |
3661 | if (isIOK) | |
3662 | SvIOK_on(sv); | |
3663 | else | |
3664 | SvIOKp_on(sv); | |
3665 | if (isUIOK) | |
3666 | SvIsUV_on(sv); | |
3667 | } | |
3668 | else if (SvNOKp(sv)) { | |
79072805 LW |
3669 | if (SvTYPE(sv) < SVt_PVNV) |
3670 | sv_upgrade(sv, SVt_PVNV); | |
1c846c1f | 3671 | /* The +20 is pure guesswork. Configure test needed. --jhi */ |
59155cc0 | 3672 | SvGROW(sv, NV_DIG + 20); |
463ee0b2 | 3673 | s = SvPVX(sv); |
79072805 | 3674 | olderrno = errno; /* some Xenix systems wipe out errno here */ |
79072805 | 3675 | #ifdef apollo |
463ee0b2 | 3676 | if (SvNVX(sv) == 0.0) |
79072805 LW |
3677 | (void)strcpy(s,"0"); |
3678 | else | |
3679 | #endif /*apollo*/ | |
bbce6d69 | 3680 | { |
2d4389e4 | 3681 | Gconvert(SvNVX(sv), NV_DIG, 0, s); |
bbce6d69 | 3682 | } |
79072805 | 3683 | errno = olderrno; |
a0d0e21e LW |
3684 | #ifdef FIXNEGATIVEZERO |
3685 | if (*s == '-' && s[1] == '0' && !s[2]) | |
3686 | strcpy(s,"0"); | |
3687 | #endif | |
79072805 LW |
3688 | while (*s) s++; |
3689 | #ifdef hcx | |
3690 | if (s[-1] == '.') | |
46fc3d4c | 3691 | *--s = '\0'; |
79072805 LW |
3692 | #endif |
3693 | } | |
79072805 | 3694 | else { |
0336b60e IZ |
3695 | if (ckWARN(WARN_UNINITIALIZED) |
3696 | && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) | |
29489e7c | 3697 | report_uninit(sv); |
a0d0e21e | 3698 | *lp = 0; |
25da4f38 IZ |
3699 | if (SvTYPE(sv) < SVt_PV) |
3700 | /* Typically the caller expects that sv_any is not NULL now. */ | |
3701 | sv_upgrade(sv, SVt_PV); | |
a0d0e21e | 3702 | return ""; |
79072805 | 3703 | } |
463ee0b2 LW |
3704 | *lp = s - SvPVX(sv); |
3705 | SvCUR_set(sv, *lp); | |
79072805 | 3706 | SvPOK_on(sv); |
1d7c1841 GS |
3707 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
3708 | PTR2UV(sv),SvPVX(sv))); | |
463ee0b2 | 3709 | return SvPVX(sv); |
a0d0e21e LW |
3710 | |
3711 | tokensave: | |
3712 | if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */ | |
3713 | /* Sneaky stuff here */ | |
3714 | ||
3715 | tokensaveref: | |
46fc3d4c | 3716 | if (!tsv) |
96827780 | 3717 | tsv = newSVpv(tmpbuf, 0); |
46fc3d4c | 3718 | sv_2mortal(tsv); |
3719 | *lp = SvCUR(tsv); | |
3720 | return SvPVX(tsv); | |
a0d0e21e LW |
3721 | } |
3722 | else { | |
3723 | STRLEN len; | |
46fc3d4c | 3724 | char *t; |
3725 | ||
3726 | if (tsv) { | |
3727 | sv_2mortal(tsv); | |
3728 | t = SvPVX(tsv); | |
3729 | len = SvCUR(tsv); | |
3730 | } | |
3731 | else { | |
96827780 MB |
3732 | t = tmpbuf; |
3733 | len = strlen(tmpbuf); | |
46fc3d4c | 3734 | } |
a0d0e21e | 3735 | #ifdef FIXNEGATIVEZERO |
46fc3d4c | 3736 | if (len == 2 && t[0] == '-' && t[1] == '0') { |
3737 | t = "0"; | |
3738 | len = 1; | |
3739 | } | |
a0d0e21e LW |
3740 | #endif |
3741 | (void)SvUPGRADE(sv, SVt_PV); | |
46fc3d4c | 3742 | *lp = len; |
a0d0e21e LW |
3743 | s = SvGROW(sv, len + 1); |
3744 | SvCUR_set(sv, len); | |
46fc3d4c | 3745 | (void)strcpy(s, t); |
6bf554b4 | 3746 | SvPOKp_on(sv); |
a0d0e21e LW |
3747 | return s; |
3748 | } | |
463ee0b2 LW |
3749 | } |
3750 | ||
645c22ef | 3751 | /* |
6050d10e JP |
3752 | =for apidoc sv_copypv |
3753 | ||
3754 | Copies a stringified representation of the source SV into the | |
3755 | destination SV. Automatically performs any necessary mg_get and | |
54f0641b | 3756 | coercion of numeric values into strings. Guaranteed to preserve |
6050d10e | 3757 | UTF-8 flag even from overloaded objects. Similar in nature to |
54f0641b NIS |
3758 | sv_2pv[_flags] but operates directly on an SV instead of just the |
3759 | string. Mostly uses sv_2pv_flags to do its work, except when that | |
6050d10e JP |
3760 | would lose the UTF-8'ness of the PV. |
3761 | ||
3762 | =cut | |
3763 | */ | |
3764 | ||
3765 | void | |
3766 | Perl_sv_copypv(pTHX_ SV *dsv, register SV *ssv) | |
3767 | { | |
446eaa42 YST |
3768 | STRLEN len; |
3769 | char *s; | |
3770 | s = SvPV(ssv,len); | |
cb50f42d | 3771 | sv_setpvn(dsv,s,len); |
446eaa42 | 3772 | if (SvUTF8(ssv)) |
cb50f42d | 3773 | SvUTF8_on(dsv); |
446eaa42 | 3774 | else |
cb50f42d | 3775 | SvUTF8_off(dsv); |
6050d10e JP |
3776 | } |
3777 | ||
3778 | /* | |
645c22ef DM |
3779 | =for apidoc sv_2pvbyte_nolen |
3780 | ||
3781 | Return a pointer to the byte-encoded representation of the SV. | |
1e54db1a | 3782 | May cause the SV to be downgraded from UTF-8 as a side-effect. |
645c22ef DM |
3783 | |
3784 | Usually accessed via the C<SvPVbyte_nolen> macro. | |
3785 | ||
3786 | =cut | |
3787 | */ | |
3788 | ||
7340a771 GS |
3789 | char * |
3790 | Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv) | |
3791 | { | |
560a288e GS |
3792 | STRLEN n_a; |
3793 | return sv_2pvbyte(sv, &n_a); | |
7340a771 GS |
3794 | } |
3795 | ||
645c22ef DM |
3796 | /* |
3797 | =for apidoc sv_2pvbyte | |
3798 | ||
3799 | Return a pointer to the byte-encoded representation of the SV, and set *lp | |
1e54db1a | 3800 | to its length. May cause the SV to be downgraded from UTF-8 as a |
645c22ef DM |
3801 | side-effect. |
3802 | ||
3803 | Usually accessed via the C<SvPVbyte> macro. | |
3804 | ||
3805 | =cut | |
3806 | */ | |
3807 | ||
7340a771 GS |
3808 | char * |
3809 | Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp) | |
3810 | { | |
0875d2fe NIS |
3811 | sv_utf8_downgrade(sv,0); |
3812 | return SvPV(sv,*lp); | |
7340a771 GS |
3813 | } |
3814 | ||
645c22ef DM |
3815 | /* |
3816 | =for apidoc sv_2pvutf8_nolen | |
3817 | ||
1e54db1a JH |
3818 | Return a pointer to the UTF-8-encoded representation of the SV. |
3819 | May cause the SV to be upgraded to UTF-8 as a side-effect. | |
645c22ef DM |
3820 | |
3821 | Usually accessed via the C<SvPVutf8_nolen> macro. | |
3822 | ||
3823 | =cut | |
3824 | */ | |
3825 | ||
7340a771 GS |
3826 | char * |
3827 | Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv) | |
3828 | { | |
560a288e GS |
3829 | STRLEN n_a; |
3830 | return sv_2pvutf8(sv, &n_a); | |
7340a771 GS |
3831 | } |
3832 | ||
645c22ef DM |
3833 | /* |
3834 | =for apidoc sv_2pvutf8 | |
3835 | ||
1e54db1a JH |
3836 | Return a pointer to the UTF-8-encoded representation of the SV, and set *lp |
3837 | to its length. May cause the SV to be upgraded to UTF-8 as a side-effect. | |
645c22ef DM |
3838 | |
3839 | Usually accessed via the C<SvPVutf8> macro. | |
3840 | ||
3841 | =cut | |
3842 | */ | |
3843 | ||
7340a771 GS |
3844 | char * |
3845 | Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp) | |
3846 | { | |
560a288e | 3847 | sv_utf8_upgrade(sv); |
7d59b7e4 | 3848 | return SvPV(sv,*lp); |
7340a771 | 3849 | } |
1c846c1f | 3850 | |
645c22ef DM |
3851 | /* |
3852 | =for apidoc sv_2bool | |
3853 | ||
3854 | This function is only called on magical items, and is only used by | |
8cf8f3d1 | 3855 | sv_true() or its macro equivalent. |
645c22ef DM |
3856 | |
3857 | =cut | |
3858 | */ | |
3859 | ||
463ee0b2 | 3860 | bool |
864dbfa3 | 3861 | Perl_sv_2bool(pTHX_ register SV *sv) |
463ee0b2 | 3862 | { |
8990e307 | 3863 | if (SvGMAGICAL(sv)) |
463ee0b2 LW |
3864 | mg_get(sv); |
3865 | ||
a0d0e21e LW |
3866 | if (!SvOK(sv)) |
3867 | return 0; | |
3868 | if (SvROK(sv)) { | |
a0d0e21e | 3869 | SV* tmpsv; |
1554e226 | 3870 | if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) && |
9e3013b1 | 3871 | (!SvROK(tmpsv) || (SvRV(tmpsv) != SvRV(sv)))) |
8a31060d | 3872 | return (bool)SvTRUE(tmpsv); |
a0d0e21e LW |
3873 | return SvRV(sv) != 0; |
3874 | } | |
463ee0b2 | 3875 | if (SvPOKp(sv)) { |
11343788 MB |
3876 | register XPV* Xpvtmp; |
3877 | if ((Xpvtmp = (XPV*)SvANY(sv)) && | |
3878 | (*Xpvtmp->xpv_pv > '0' || | |
3879 | Xpvtmp->xpv_cur > 1 || | |
3880 | (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0'))) | |
463ee0b2 LW |
3881 | return 1; |
3882 | else | |
3883 | return 0; | |
3884 | } | |
3885 | else { | |
3886 | if (SvIOKp(sv)) | |
3887 | return SvIVX(sv) != 0; | |
3888 | else { | |
3889 | if (SvNOKp(sv)) | |
3890 | return SvNVX(sv) != 0.0; | |
3891 | else | |
3892 | return FALSE; | |
3893 | } | |
3894 | } | |
79072805 LW |
3895 | } |
3896 | ||
09540bc3 JH |
3897 | /* sv_utf8_upgrade() is now a macro using sv_utf8_upgrade_flags(); |
3898 | * this function provided for binary compatibility only | |
3899 | */ | |
3900 | ||
3901 | ||
3902 | STRLEN | |
3903 | Perl_sv_utf8_upgrade(pTHX_ register SV *sv) | |
3904 | { | |
3905 | return sv_utf8_upgrade_flags(sv, SV_GMAGIC); | |
3906 | } | |
3907 | ||
c461cf8f JH |
3908 | /* |
3909 | =for apidoc sv_utf8_upgrade | |
3910 | ||
78ea37eb | 3911 | Converts the PV of an SV to its UTF-8-encoded form. |
645c22ef | 3912 | Forces the SV to string form if it is not already. |
4411f3b6 NIS |
3913 | Always sets the SvUTF8 flag to avoid future validity checks even |
3914 | if all the bytes have hibit clear. | |
c461cf8f | 3915 | |
13a6c0e0 JH |
3916 | This is not as a general purpose byte encoding to Unicode interface: |
3917 | use the Encode extension for that. | |
3918 | ||
8d6d96c1 HS |
3919 | =for apidoc sv_utf8_upgrade_flags |
3920 | ||
78ea37eb | 3921 | Converts the PV of an SV to its UTF-8-encoded form. |
645c22ef | 3922 | Forces the SV to string form if it is not already. |
8d6d96c1 HS |
3923 | Always sets the SvUTF8 flag to avoid future validity checks even |
3924 | if all the bytes have hibit clear. If C<flags> has C<SV_GMAGIC> bit set, | |
3925 | will C<mg_get> on C<sv> if appropriate, else not. C<sv_utf8_upgrade> and | |
3926 | C<sv_utf8_upgrade_nomg> are implemented in terms of this function. | |
3927 | ||
13a6c0e0 JH |
3928 | This is not as a general purpose byte encoding to Unicode interface: |
3929 | use the Encode extension for that. | |
3930 | ||
8d6d96c1 HS |
3931 | =cut |
3932 | */ | |
3933 | ||
3934 | STRLEN | |
3935 | Perl_sv_utf8_upgrade_flags(pTHX_ register SV *sv, I32 flags) | |
3936 | { | |
db42d148 | 3937 | U8 *s, *t, *e; |
511c2ff0 | 3938 | int hibit = 0; |
560a288e | 3939 | |
808c356f RGS |
3940 | if (sv == &PL_sv_undef) |
3941 | return 0; | |
e0e62c2a NIS |
3942 | if (!SvPOK(sv)) { |
3943 | STRLEN len = 0; | |
f5cee72b | 3944 | (void) SvPV_force(sv,len); |
e0e62c2a | 3945 | } |
4411f3b6 | 3946 | |
f5cee72b TS |
3947 | if (SvUTF8(sv)) { |
3948 | SvSETMAGIC(sv); | |
5fec3b1d | 3949 | return SvCUR(sv); |
f5cee72b | 3950 | } |
5fec3b1d | 3951 | |
765f542d NC |
3952 | if (SvIsCOW(sv)) { |
3953 | sv_force_normal_flags(sv, 0); | |
db42d148 NIS |
3954 | } |
3955 | ||
88632417 | 3956 | if (PL_encoding && !(flags & SV_UTF8_NO_ENCODING)) |
799ef3cb | 3957 | sv_recode_to_utf8(sv, PL_encoding); |
9f4817db | 3958 | else { /* Assume Latin-1/EBCDIC */ |
0a378802 JH |
3959 | /* This function could be much more efficient if we |
3960 | * had a FLAG in SVs to signal if there are any hibit | |
3961 | * chars in the PV. Given that there isn't such a flag | |
3962 | * make the loop as fast as possible. */ | |
3963 | s = (U8 *) SvPVX(sv); | |
3964 | e = (U8 *) SvEND(sv); | |
3965 | t = s; | |
3966 | while (t < e) { | |
3967 | U8 ch = *t++; | |
3968 | if ((hibit = !NATIVE_IS_INVARIANT(ch))) | |
3969 | break; | |
3970 | } | |
3971 | if (hibit) { | |
3972 | STRLEN len; | |
cc2578a4 | 3973 | (void)SvOOK_off(sv); |
06a45632 | 3974 | s = (U8*)SvPVX(sv); |
0a378802 JH |
3975 | len = SvCUR(sv) + 1; /* Plus the \0 */ |
3976 | SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len); | |
3977 | SvCUR(sv) = len - 1; | |
3978 | if (SvLEN(sv) != 0) | |
3979 | Safefree(s); /* No longer using what was there before. */ | |
3980 | SvLEN(sv) = len; /* No longer know the real size. */ | |
3981 | } | |
9f4817db JH |
3982 | /* Mark as UTF-8 even if no hibit - saves scanning loop */ |
3983 | SvUTF8_on(sv); | |
560a288e | 3984 | } |
f5cee72b | 3985 | SvSETMAGIC(sv); |
4411f3b6 | 3986 | return SvCUR(sv); |
560a288e GS |
3987 | } |
3988 | ||
c461cf8f JH |
3989 | /* |
3990 | =for apidoc sv_utf8_downgrade | |
3991 | ||
78ea37eb TS |
3992 | Attempts to convert the PV of an SV from characters to bytes. |
3993 | If the PV contains a character beyond byte, this conversion will fail; | |
3994 | in this case, either returns false or, if C<fail_ok> is not | |
c461cf8f JH |
3995 | true, croaks. |
3996 | ||
13a6c0e0 JH |
3997 | This is not as a general purpose Unicode to byte encoding interface: |
3998 | use the Encode extension for that. | |
3999 | ||
c461cf8f JH |
4000 | =cut |
4001 | */ | |
4002 | ||
560a288e GS |
4003 | bool |
4004 | Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok) | |
4005 | { | |
78ea37eb | 4006 | if (SvPOKp(sv) && SvUTF8(sv)) { |
fa301091 | 4007 | if (SvCUR(sv)) { |
03cfe0ae | 4008 | U8 *s; |
652088fc | 4009 | STRLEN len; |
fa301091 | 4010 | |
765f542d NC |
4011 | if (SvIsCOW(sv)) { |
4012 | sv_force_normal_flags(sv, 0); | |
4013 | } | |
03cfe0ae NIS |
4014 | s = (U8 *) SvPV(sv, len); |
4015 | if (!utf8_to_bytes(s, &len)) { | |
fa301091 JH |
4016 | if (fail_ok) |
4017 | return FALSE; | |
4018 | else { | |
4019 | if (PL_op) | |
4020 | Perl_croak(aTHX_ "Wide character in %s", | |
53e06cf0 | 4021 | OP_DESC(PL_op)); |
fa301091 JH |
4022 | else |
4023 | Perl_croak(aTHX_ "Wide character"); | |
4024 | } | |
4b3603a4 | 4025 | } |
fa301091 | 4026 | SvCUR(sv) = len; |
67e989fb | 4027 | } |
560a288e | 4028 | } |
ffebcc3e | 4029 | SvUTF8_off(sv); |
560a288e GS |
4030 | return TRUE; |
4031 | } | |
4032 | ||
c461cf8f JH |
4033 | /* |
4034 | =for apidoc sv_utf8_encode | |
4035 | ||
78ea37eb TS |
4036 | Converts the PV of an SV to UTF-8, but then turns the C<SvUTF8> |
4037 | flag off so that it looks like octets again. | |
c461cf8f JH |
4038 | |
4039 | =cut | |
4040 | */ | |
4041 | ||
560a288e GS |
4042 | void |
4043 | Perl_sv_utf8_encode(pTHX_ register SV *sv) | |
4044 | { | |
4411f3b6 | 4045 | (void) sv_utf8_upgrade(sv); |
4c94c214 NC |
4046 | if (SvIsCOW(sv)) { |
4047 | sv_force_normal_flags(sv, 0); | |
4048 | } | |
4049 | if (SvREADONLY(sv)) { | |
4050 | Perl_croak(aTHX_ PL_no_modify); | |
4051 | } | |
560a288e GS |
4052 | SvUTF8_off(sv); |
4053 | } | |
4054 | ||
4411f3b6 NIS |
4055 | /* |
4056 | =for apidoc sv_utf8_decode | |
4057 | ||
78ea37eb TS |
4058 | If the PV of the SV is an octet sequence in UTF-8 |
4059 | and contains a multiple-byte character, the C<SvUTF8> flag is turned on | |
4060 | so that it looks like a character. If the PV contains only single-byte | |
4061 | characters, the C<SvUTF8> flag stays being off. | |
4062 | Scans PV for validity and returns false if the PV is invalid UTF-8. | |
4411f3b6 NIS |
4063 | |
4064 | =cut | |
4065 | */ | |
4066 | ||
560a288e GS |
4067 | bool |
4068 | Perl_sv_utf8_decode(pTHX_ register SV *sv) | |
4069 | { | |
78ea37eb | 4070 | if (SvPOKp(sv)) { |
63cd0674 NIS |
4071 | U8 *c; |
4072 | U8 *e; | |
9cbac4c7 | 4073 | |
645c22ef DM |
4074 | /* The octets may have got themselves encoded - get them back as |
4075 | * bytes | |
4076 | */ | |
4077 | if (!sv_utf8_downgrade(sv, TRUE)) | |
560a288e GS |
4078 | return FALSE; |
4079 | ||
4080 | /* it is actually just a matter of turning the utf8 flag on, but | |
4081 | * we want to make sure everything inside is valid utf8 first. | |
4082 | */ | |
63cd0674 NIS |
4083 | c = (U8 *) SvPVX(sv); |
4084 | if (!is_utf8_string(c, SvCUR(sv)+1)) | |
67e989fb | 4085 | return FALSE; |
63cd0674 | 4086 | e = (U8 *) SvEND(sv); |
511c2ff0 | 4087 | while (c < e) { |
c4d5f83a NIS |
4088 | U8 ch = *c++; |
4089 | if (!UTF8_IS_INVARIANT(ch)) { | |
67e989fb JH |
4090 | SvUTF8_on(sv); |
4091 | break; | |
4092 | } | |
560a288e | 4093 | } |
560a288e GS |
4094 | } |
4095 | return TRUE; | |
4096 | } | |
4097 | ||
09540bc3 JH |
4098 | /* sv_setsv() is now a macro using Perl_sv_setsv_flags(); |
4099 | * this function provided for binary compatibility only | |
4100 | */ | |
4101 | ||
4102 | void | |
4103 | Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr) | |
4104 | { | |
4105 | sv_setsv_flags(dstr, sstr, SV_GMAGIC); | |
4106 | } | |
4107 | ||
954c1994 GS |
4108 | /* |
4109 | =for apidoc sv_setsv | |
4110 | ||
645c22ef DM |
4111 | Copies the contents of the source SV C<ssv> into the destination SV |
4112 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
4113 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
4114 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
4115 | content of the destination. | |
4116 | ||
4117 | You probably want to use one of the assortment of wrappers, such as | |
4118 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
4119 | C<SvSetMagicSV_nosteal>. | |
4120 | ||
8d6d96c1 HS |
4121 | =for apidoc sv_setsv_flags |
4122 | ||
645c22ef DM |
4123 | Copies the contents of the source SV C<ssv> into the destination SV |
4124 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
4125 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
4126 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
4127 | content of the destination. | |
4128 | If the C<flags> parameter has the C<SV_GMAGIC> bit set, will C<mg_get> on | |
4129 | C<ssv> if appropriate, else not. C<sv_setsv> and C<sv_setsv_nomg> are | |
4130 | implemented in terms of this function. | |
4131 | ||
4132 | You probably want to use one of the assortment of wrappers, such as | |
4133 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
4134 | C<SvSetMagicSV_nosteal>. | |
4135 | ||
4136 | This is the primary function for copying scalars, and most other | |
4137 | copy-ish functions and macros use this underneath. | |
8d6d96c1 HS |
4138 | |
4139 | =cut | |
4140 | */ | |
4141 | ||
4142 | void | |
4143 | Perl_sv_setsv_flags(pTHX_ SV *dstr, register SV *sstr, I32 flags) | |
4144 | { | |
8990e307 LW |
4145 | register U32 sflags; |
4146 | register int dtype; | |
4147 | register int stype; | |
463ee0b2 | 4148 | |
79072805 LW |
4149 | if (sstr == dstr) |
4150 | return; | |
765f542d | 4151 | SV_CHECK_THINKFIRST_COW_DROP(dstr); |
79072805 | 4152 | if (!sstr) |
3280af22 | 4153 | sstr = &PL_sv_undef; |
8990e307 LW |
4154 | stype = SvTYPE(sstr); |
4155 | dtype = SvTYPE(dstr); | |
79072805 | 4156 | |
a0d0e21e | 4157 | SvAMAGIC_off(dstr); |
ece467f9 JP |
4158 | if ( SvVOK(dstr) ) |
4159 | { | |
4160 | /* need to nuke the magic */ | |
4161 | mg_free(dstr); | |
4162 | SvRMAGICAL_off(dstr); | |
4163 | } | |
9e7bc3e8 | 4164 | |
463ee0b2 | 4165 | /* There's a lot of redundancy below but we're going for speed here */ |
79072805 | 4166 | |
8990e307 | 4167 | switch (stype) { |
79072805 | 4168 | case SVt_NULL: |
aece5585 | 4169 | undef_sstr: |
20408e3c GS |
4170 | if (dtype != SVt_PVGV) { |
4171 | (void)SvOK_off(dstr); | |
4172 | return; | |
4173 | } | |
4174 | break; | |
463ee0b2 | 4175 | case SVt_IV: |
aece5585 GA |
4176 | if (SvIOK(sstr)) { |
4177 | switch (dtype) { | |
4178 | case SVt_NULL: | |
8990e307 | 4179 | sv_upgrade(dstr, SVt_IV); |
aece5585 GA |
4180 | break; |
4181 | case SVt_NV: | |
8990e307 | 4182 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 GA |
4183 | break; |
4184 | case SVt_RV: | |
4185 | case SVt_PV: | |
a0d0e21e | 4186 | sv_upgrade(dstr, SVt_PVIV); |
aece5585 GA |
4187 | break; |
4188 | } | |
4189 | (void)SvIOK_only(dstr); | |
4190 | SvIVX(dstr) = SvIVX(sstr); | |
25da4f38 IZ |
4191 | if (SvIsUV(sstr)) |
4192 | SvIsUV_on(dstr); | |
27c9684d AP |
4193 | if (SvTAINTED(sstr)) |
4194 | SvTAINT(dstr); | |
aece5585 | 4195 | return; |
8990e307 | 4196 | } |
aece5585 GA |
4197 | goto undef_sstr; |
4198 | ||
463ee0b2 | 4199 | case SVt_NV: |
aece5585 GA |
4200 | if (SvNOK(sstr)) { |
4201 | switch (dtype) { | |
4202 | case SVt_NULL: | |
4203 | case SVt_IV: | |
8990e307 | 4204 | sv_upgrade(dstr, SVt_NV); |
aece5585 GA |
4205 | break; |
4206 | case SVt_RV: | |
4207 | case SVt_PV: | |
4208 | case SVt_PVIV: | |
a0d0e21e | 4209 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 GA |
4210 | break; |
4211 | } | |
4212 | SvNVX(dstr) = SvNVX(sstr); | |
4213 | (void)SvNOK_only(dstr); | |
27c9684d AP |
4214 | if (SvTAINTED(sstr)) |
4215 | SvTAINT(dstr); | |
aece5585 | 4216 | return; |
8990e307 | 4217 | } |
aece5585 GA |
4218 | goto undef_sstr; |
4219 | ||
ed6116ce | 4220 | case SVt_RV: |
8990e307 | 4221 | if (dtype < SVt_RV) |
ed6116ce | 4222 | sv_upgrade(dstr, SVt_RV); |
c07a80fd | 4223 | else if (dtype == SVt_PVGV && |
23bb1b96 | 4224 | SvROK(sstr) && SvTYPE(SvRV(sstr)) == SVt_PVGV) { |
c07a80fd | 4225 | sstr = SvRV(sstr); |
a5f75d66 | 4226 | if (sstr == dstr) { |
1d7c1841 GS |
4227 | if (GvIMPORTED(dstr) != GVf_IMPORTED |
4228 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
4229 | { | |
a5f75d66 | 4230 | GvIMPORTED_on(dstr); |
1d7c1841 | 4231 | } |
a5f75d66 AD |
4232 | GvMULTI_on(dstr); |
4233 | return; | |
4234 | } | |
c07a80fd | 4235 | goto glob_assign; |
4236 | } | |
ed6116ce | 4237 | break; |
fc36a67e | 4238 | case SVt_PVFM: |
d89fc664 NC |
4239 | #ifdef PERL_COPY_ON_WRITE |
4240 | if ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS) { | |
4241 | if (dtype < SVt_PVIV) | |
4242 | sv_upgrade(dstr, SVt_PVIV); | |
4243 | break; | |
4244 | } | |
4245 | /* Fall through */ | |
4246 | #endif | |
4247 | case SVt_PV: | |
8990e307 | 4248 | if (dtype < SVt_PV) |
463ee0b2 | 4249 | sv_upgrade(dstr, SVt_PV); |
463ee0b2 LW |
4250 | break; |
4251 | case SVt_PVIV: | |
8990e307 | 4252 | if (dtype < SVt_PVIV) |
463ee0b2 | 4253 | sv_upgrade(dstr, SVt_PVIV); |
463ee0b2 LW |
4254 | break; |
4255 | case SVt_PVNV: | |
8990e307 | 4256 | if (dtype < SVt_PVNV) |
463ee0b2 | 4257 | sv_upgrade(dstr, SVt_PVNV); |
463ee0b2 | 4258 | break; |
4633a7c4 LW |
4259 | case SVt_PVAV: |
4260 | case SVt_PVHV: | |
4261 | case SVt_PVCV: | |
4633a7c4 | 4262 | case SVt_PVIO: |
533c011a | 4263 | if (PL_op) |
cea2e8a9 | 4264 | Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0), |
53e06cf0 | 4265 | OP_NAME(PL_op)); |
4633a7c4 | 4266 | else |
cea2e8a9 | 4267 | Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0)); |
4633a7c4 LW |
4268 | break; |
4269 | ||
79072805 | 4270 | case SVt_PVGV: |
8990e307 | 4271 | if (dtype <= SVt_PVGV) { |
c07a80fd | 4272 | glob_assign: |
a5f75d66 | 4273 | if (dtype != SVt_PVGV) { |
a0d0e21e LW |
4274 | char *name = GvNAME(sstr); |
4275 | STRLEN len = GvNAMELEN(sstr); | |
b76195c2 DM |
4276 | /* don't upgrade SVt_PVLV: it can hold a glob */ |
4277 | if (dtype != SVt_PVLV) | |
4278 | sv_upgrade(dstr, SVt_PVGV); | |
14befaf4 | 4279 | sv_magic(dstr, dstr, PERL_MAGIC_glob, Nullch, 0); |
85aff577 | 4280 | GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr)); |
a0d0e21e LW |
4281 | GvNAME(dstr) = savepvn(name, len); |
4282 | GvNAMELEN(dstr) = len; | |
4283 | SvFAKE_on(dstr); /* can coerce to non-glob */ | |
4284 | } | |
7bac28a0 | 4285 | /* ahem, death to those who redefine active sort subs */ |
3280af22 NIS |
4286 | else if (PL_curstackinfo->si_type == PERLSI_SORT |
4287 | && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr))) | |
cea2e8a9 | 4288 | Perl_croak(aTHX_ "Can't redefine active sort subroutine %s", |
7bac28a0 | 4289 | GvNAME(dstr)); |
5bd07a3d | 4290 | |
7fb37951 AMS |
4291 | #ifdef GV_UNIQUE_CHECK |
4292 | if (GvUNIQUE((GV*)dstr)) { | |
5bd07a3d DM |
4293 | Perl_croak(aTHX_ PL_no_modify); |
4294 | } | |
4295 | #endif | |
4296 | ||
a0d0e21e | 4297 | (void)SvOK_off(dstr); |
a5f75d66 | 4298 | GvINTRO_off(dstr); /* one-shot flag */ |
1edc1566 | 4299 | gp_free((GV*)dstr); |
79072805 | 4300 | GvGP(dstr) = gp_ref(GvGP(sstr)); |
27c9684d AP |
4301 | if (SvTAINTED(sstr)) |
4302 | SvTAINT(dstr); | |
1d7c1841 GS |
4303 | if (GvIMPORTED(dstr) != GVf_IMPORTED |
4304 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
4305 | { | |
a5f75d66 | 4306 | GvIMPORTED_on(dstr); |
1d7c1841 | 4307 | } |
a5f75d66 | 4308 | GvMULTI_on(dstr); |
79072805 LW |
4309 | return; |
4310 | } | |
4311 | /* FALL THROUGH */ | |
4312 | ||
4313 | default: | |
8d6d96c1 | 4314 | if (SvGMAGICAL(sstr) && (flags & SV_GMAGIC)) { |
973f89ab | 4315 | mg_get(sstr); |
eb160463 | 4316 | if ((int)SvTYPE(sstr) != stype) { |
973f89ab CS |
4317 | stype = SvTYPE(sstr); |
4318 | if (stype == SVt_PVGV && dtype <= SVt_PVGV) | |
4319 | goto glob_assign; | |
4320 | } | |
4321 | } | |
ded42b9f | 4322 | if (stype == SVt_PVLV) |
6fc92669 | 4323 | (void)SvUPGRADE(dstr, SVt_PVNV); |
ded42b9f | 4324 | else |
eb160463 | 4325 | (void)SvUPGRADE(dstr, (U32)stype); |
79072805 LW |
4326 | } |
4327 | ||
8990e307 LW |
4328 | sflags = SvFLAGS(sstr); |
4329 | ||
4330 | if (sflags & SVf_ROK) { | |
4331 | if (dtype >= SVt_PV) { | |
4332 | if (dtype == SVt_PVGV) { | |
4333 | SV *sref = SvREFCNT_inc(SvRV(sstr)); | |
4334 | SV *dref = 0; | |
a5f75d66 | 4335 | int intro = GvINTRO(dstr); |
a0d0e21e | 4336 | |
7fb37951 AMS |
4337 | #ifdef GV_UNIQUE_CHECK |
4338 | if (GvUNIQUE((GV*)dstr)) { | |
5bd07a3d DM |
4339 | Perl_croak(aTHX_ PL_no_modify); |
4340 | } | |
4341 | #endif | |
4342 | ||
a0d0e21e | 4343 | if (intro) { |
a5f75d66 | 4344 | GvINTRO_off(dstr); /* one-shot flag */ |
1d7c1841 | 4345 | GvLINE(dstr) = CopLINE(PL_curcop); |
1edc1566 | 4346 | GvEGV(dstr) = (GV*)dstr; |
a0d0e21e | 4347 | } |
a5f75d66 | 4348 | GvMULTI_on(dstr); |
8990e307 LW |
4349 | switch (SvTYPE(sref)) { |
4350 | case SVt_PVAV: | |
a0d0e21e | 4351 | if (intro) |
890ed176 | 4352 | SAVEGENERICSV(GvAV(dstr)); |
a0d0e21e LW |
4353 | else |
4354 | dref = (SV*)GvAV(dstr); | |
8990e307 | 4355 | GvAV(dstr) = (AV*)sref; |
39bac7f7 | 4356 | if (!GvIMPORTED_AV(dstr) |
1d7c1841 GS |
4357 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
4358 | { | |
a5f75d66 | 4359 | GvIMPORTED_AV_on(dstr); |
1d7c1841 | 4360 | } |
8990e307 LW |
4361 | break; |
4362 | case SVt_PVHV: | |
a0d0e21e | 4363 | if (intro) |
890ed176 | 4364 | SAVEGENERICSV(GvHV(dstr)); |
a0d0e21e LW |
4365 | else |
4366 | dref = (SV*)GvHV(dstr); | |
8990e307 | 4367 | GvHV(dstr) = (HV*)sref; |
39bac7f7 | 4368 | if (!GvIMPORTED_HV(dstr) |
1d7c1841 GS |
4369 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
4370 | { | |
a5f75d66 | 4371 | GvIMPORTED_HV_on(dstr); |
1d7c1841 | 4372 | } |
8990e307 LW |
4373 | break; |
4374 | case SVt_PVCV: | |
8ebc5c01 | 4375 | if (intro) { |
4376 | if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) { | |
4377 | SvREFCNT_dec(GvCV(dstr)); | |
4378 | GvCV(dstr) = Nullcv; | |
68dc0745 | 4379 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
3280af22 | 4380 | PL_sub_generation++; |
8ebc5c01 | 4381 | } |
890ed176 | 4382 | SAVEGENERICSV(GvCV(dstr)); |
8ebc5c01 | 4383 | } |
68dc0745 | 4384 | else |
4385 | dref = (SV*)GvCV(dstr); | |
4386 | if (GvCV(dstr) != (CV*)sref) { | |
748a9306 | 4387 | CV* cv = GvCV(dstr); |
4633a7c4 | 4388 | if (cv) { |
68dc0745 | 4389 | if (!GvCVGEN((GV*)dstr) && |
4390 | (CvROOT(cv) || CvXSUB(cv))) | |
4391 | { | |
7bac28a0 | 4392 | /* ahem, death to those who redefine |
4393 | * active sort subs */ | |
3280af22 NIS |
4394 | if (PL_curstackinfo->si_type == PERLSI_SORT && |
4395 | PL_sortcop == CvSTART(cv)) | |
1c846c1f | 4396 | Perl_croak(aTHX_ |
7bac28a0 | 4397 | "Can't redefine active sort subroutine %s", |
4398 | GvENAME((GV*)dstr)); | |
beab0874 JT |
4399 | /* Redefining a sub - warning is mandatory if |
4400 | it was a const and its value changed. */ | |
4401 | if (ckWARN(WARN_REDEFINE) | |
4402 | || (CvCONST(cv) | |
4403 | && (!CvCONST((CV*)sref) | |
4404 | || sv_cmp(cv_const_sv(cv), | |
4405 | cv_const_sv((CV*)sref))))) | |
4406 | { | |
9014280d | 4407 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
beab0874 | 4408 | CvCONST(cv) |
910764e6 RGS |
4409 | ? "Constant subroutine %s::%s redefined" |
4410 | : "Subroutine %s::%s redefined", | |
4411 | HvNAME(GvSTASH((GV*)dstr)), | |
beab0874 JT |
4412 | GvENAME((GV*)dstr)); |
4413 | } | |
9607fc9c | 4414 | } |
fb24441d RGS |
4415 | if (!intro) |
4416 | cv_ckproto(cv, (GV*)dstr, | |
4417 | SvPOK(sref) ? SvPVX(sref) : Nullch); | |
4633a7c4 | 4418 | } |
a5f75d66 | 4419 | GvCV(dstr) = (CV*)sref; |
7a4c00b4 | 4420 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
a5f75d66 | 4421 | GvASSUMECV_on(dstr); |
3280af22 | 4422 | PL_sub_generation++; |
a5f75d66 | 4423 | } |
39bac7f7 | 4424 | if (!GvIMPORTED_CV(dstr) |
1d7c1841 GS |
4425 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
4426 | { | |
a5f75d66 | 4427 | GvIMPORTED_CV_on(dstr); |
1d7c1841 | 4428 | } |
8990e307 | 4429 | break; |
91bba347 LW |
4430 | case SVt_PVIO: |
4431 | if (intro) | |
890ed176 | 4432 | SAVEGENERICSV(GvIOp(dstr)); |
91bba347 LW |
4433 | else |
4434 | dref = (SV*)GvIOp(dstr); | |
4435 | GvIOp(dstr) = (IO*)sref; | |
4436 | break; | |
f4d13ee9 JH |
4437 | case SVt_PVFM: |
4438 | if (intro) | |
890ed176 | 4439 | SAVEGENERICSV(GvFORM(dstr)); |
f4d13ee9 JH |
4440 | else |
4441 | dref = (SV*)GvFORM(dstr); | |
4442 | GvFORM(dstr) = (CV*)sref; | |
4443 | break; | |
8990e307 | 4444 | default: |
a0d0e21e | 4445 | if (intro) |
890ed176 | 4446 | SAVEGENERICSV(GvSV(dstr)); |
a0d0e21e LW |
4447 | else |
4448 | dref = (SV*)GvSV(dstr); | |
8990e307 | 4449 | GvSV(dstr) = sref; |
39bac7f7 | 4450 | if (!GvIMPORTED_SV(dstr) |
1d7c1841 GS |
4451 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
4452 | { | |
a5f75d66 | 4453 | GvIMPORTED_SV_on(dstr); |
1d7c1841 | 4454 | } |
8990e307 LW |
4455 | break; |
4456 | } | |
4457 | if (dref) | |
4458 | SvREFCNT_dec(dref); | |
27c9684d AP |
4459 | if (SvTAINTED(sstr)) |
4460 | SvTAINT(dstr); | |
8990e307 LW |
4461 | return; |
4462 | } | |
a0d0e21e | 4463 | if (SvPVX(dstr)) { |
760ac839 | 4464 | (void)SvOOK_off(dstr); /* backoff */ |
50483b2c JD |
4465 | if (SvLEN(dstr)) |
4466 | Safefree(SvPVX(dstr)); | |
a0d0e21e LW |
4467 | SvLEN(dstr)=SvCUR(dstr)=0; |
4468 | } | |
8990e307 | 4469 | } |
a0d0e21e | 4470 | (void)SvOK_off(dstr); |
8990e307 | 4471 | SvRV(dstr) = SvREFCNT_inc(SvRV(sstr)); |
ed6116ce | 4472 | SvROK_on(dstr); |
8990e307 | 4473 | if (sflags & SVp_NOK) { |
3332b3c1 JH |
4474 | SvNOKp_on(dstr); |
4475 | /* Only set the public OK flag if the source has public OK. */ | |
4476 | if (sflags & SVf_NOK) | |
4477 | SvFLAGS(dstr) |= SVf_NOK; | |
ed6116ce LW |
4478 | SvNVX(dstr) = SvNVX(sstr); |
4479 | } | |
8990e307 | 4480 | if (sflags & SVp_IOK) { |
3332b3c1 JH |
4481 | (void)SvIOKp_on(dstr); |
4482 | if (sflags & SVf_IOK) | |
4483 | SvFLAGS(dstr) |= SVf_IOK; | |
2b1c7e3e | 4484 | if (sflags & SVf_IVisUV) |
25da4f38 | 4485 | SvIsUV_on(dstr); |
3332b3c1 | 4486 | SvIVX(dstr) = SvIVX(sstr); |
ed6116ce | 4487 | } |
a0d0e21e LW |
4488 | if (SvAMAGIC(sstr)) { |
4489 | SvAMAGIC_on(dstr); | |
4490 | } | |
ed6116ce | 4491 | } |
8990e307 | 4492 | else if (sflags & SVp_POK) { |
765f542d | 4493 | bool isSwipe = 0; |
79072805 LW |
4494 | |
4495 | /* | |
4496 | * Check to see if we can just swipe the string. If so, it's a | |
4497 | * possible small lose on short strings, but a big win on long ones. | |
463ee0b2 LW |
4498 | * It might even be a win on short strings if SvPVX(dstr) |
4499 | * has to be allocated and SvPVX(sstr) has to be freed. | |
79072805 LW |
4500 | */ |
4501 | ||
120fac95 NC |
4502 | /* Whichever path we take through the next code, we want this true, |
4503 | and doing it now facilitates the COW check. */ | |
4504 | (void)SvPOK_only(dstr); | |
4505 | ||
765f542d NC |
4506 | if ( |
4507 | #ifdef PERL_COPY_ON_WRITE | |
4508 | (sflags & (SVf_FAKE | SVf_READONLY)) != (SVf_FAKE | SVf_READONLY) | |
4509 | && | |
4510 | #endif | |
4511 | !(isSwipe = | |
4512 | (sflags & SVs_TEMP) && /* slated for free anyway? */ | |
4513 | !(sflags & SVf_OOK) && /* and not involved in OOK hack? */ | |
4514 | SvREFCNT(sstr) == 1 && /* and no other references to it? */ | |
4515 | SvLEN(sstr) && /* and really is a string */ | |
645c22ef | 4516 | /* and won't be needed again, potentially */ |
765f542d NC |
4517 | !(PL_op && PL_op->op_type == OP_AASSIGN)) |
4518 | #ifdef PERL_COPY_ON_WRITE | |
4519 | && !((sflags & CAN_COW_MASK) == CAN_COW_FLAGS | |
120fac95 | 4520 | && (SvFLAGS(dstr) & CAN_COW_MASK) == CAN_COW_FLAGS |
765f542d NC |
4521 | && SvTYPE(sstr) >= SVt_PVIV) |
4522 | #endif | |
4523 | ) { | |
4524 | /* Failed the swipe test, and it's not a shared hash key either. | |
4525 | Have to copy the string. */ | |
4526 | STRLEN len = SvCUR(sstr); | |
4527 | SvGROW(dstr, len + 1); /* inlined from sv_setpvn */ | |
4528 | Move(SvPVX(sstr),SvPVX(dstr),len,char); | |
4529 | SvCUR_set(dstr, len); | |
4530 | *SvEND(dstr) = '\0'; | |
765f542d NC |
4531 | } else { |
4532 | /* If PERL_COPY_ON_WRITE is not defined, then isSwipe will always | |
4533 | be true in here. */ | |
4534 | #ifdef PERL_COPY_ON_WRITE | |
4535 | /* Either it's a shared hash key, or it's suitable for | |
4536 | copy-on-write or we can swipe the string. */ | |
46187eeb | 4537 | if (DEBUG_C_TEST) { |
ed252734 | 4538 | PerlIO_printf(Perl_debug_log, "Copy on write: sstr --> dstr\n"); |
e419cbc5 NC |
4539 | sv_dump(sstr); |
4540 | sv_dump(dstr); | |
46187eeb | 4541 | } |
765f542d NC |
4542 | if (!isSwipe) { |
4543 | /* I believe I should acquire a global SV mutex if | |
4544 | it's a COW sv (not a shared hash key) to stop | |
4545 | it going un copy-on-write. | |
4546 | If the source SV has gone un copy on write between up there | |
4547 | and down here, then (assert() that) it is of the correct | |
4548 | form to make it copy on write again */ | |
4549 | if ((sflags & (SVf_FAKE | SVf_READONLY)) | |
4550 | != (SVf_FAKE | SVf_READONLY)) { | |
4551 | SvREADONLY_on(sstr); | |
4552 | SvFAKE_on(sstr); | |
4553 | /* Make the source SV into a loop of 1. | |
4554 | (about to become 2) */ | |
a29f6d03 | 4555 | SV_COW_NEXT_SV_SET(sstr, sstr); |
765f542d NC |
4556 | } |
4557 | } | |
4558 | #endif | |
4559 | /* Initial code is common. */ | |
adbc6bb1 | 4560 | if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */ |
a5f75d66 AD |
4561 | if (SvOOK(dstr)) { |
4562 | SvFLAGS(dstr) &= ~SVf_OOK; | |
4563 | Safefree(SvPVX(dstr) - SvIVX(dstr)); | |
4564 | } | |
50483b2c | 4565 | else if (SvLEN(dstr)) |
a5f75d66 | 4566 | Safefree(SvPVX(dstr)); |
79072805 | 4567 | } |
765f542d NC |
4568 | |
4569 | #ifdef PERL_COPY_ON_WRITE | |
4570 | if (!isSwipe) { | |
4571 | /* making another shared SV. */ | |
4572 | STRLEN cur = SvCUR(sstr); | |
4573 | STRLEN len = SvLEN(sstr); | |
d89fc664 | 4574 | assert (SvTYPE(dstr) >= SVt_PVIV); |
765f542d NC |
4575 | if (len) { |
4576 | /* SvIsCOW_normal */ | |
4577 | /* splice us in between source and next-after-source. */ | |
a29f6d03 NC |
4578 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); |
4579 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
765f542d NC |
4580 | SvPV_set(dstr, SvPVX(sstr)); |
4581 | } else { | |
4582 | /* SvIsCOW_shared_hash */ | |
4583 | UV hash = SvUVX(sstr); | |
46187eeb NC |
4584 | DEBUG_C(PerlIO_printf(Perl_debug_log, |
4585 | "Copy on write: Sharing hash\n")); | |
765f542d NC |
4586 | SvPV_set(dstr, |
4587 | sharepvn(SvPVX(sstr), | |
4588 | (sflags & SVf_UTF8?-cur:cur), hash)); | |
4589 | SvUVX(dstr) = hash; | |
4590 | } | |
4591 | SvLEN(dstr) = len; | |
4592 | SvCUR(dstr) = cur; | |
4593 | SvREADONLY_on(dstr); | |
4594 | SvFAKE_on(dstr); | |
4595 | /* Relesase a global SV mutex. */ | |
4596 | } | |
4597 | else | |
4598 | #endif | |
4599 | { /* Passes the swipe test. */ | |
4600 | SvPV_set(dstr, SvPVX(sstr)); | |
4601 | SvLEN_set(dstr, SvLEN(sstr)); | |
4602 | SvCUR_set(dstr, SvCUR(sstr)); | |
4603 | ||
4604 | SvTEMP_off(dstr); | |
4605 | (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */ | |
4606 | SvPV_set(sstr, Nullch); | |
4607 | SvLEN_set(sstr, 0); | |
4608 | SvCUR_set(sstr, 0); | |
4609 | SvTEMP_off(sstr); | |
4610 | } | |
4611 | } | |
9aa983d2 | 4612 | if (sflags & SVf_UTF8) |
a7cb1f99 | 4613 | SvUTF8_on(dstr); |
79072805 | 4614 | /*SUPPRESS 560*/ |
8990e307 | 4615 | if (sflags & SVp_NOK) { |
3332b3c1 JH |
4616 | SvNOKp_on(dstr); |
4617 | if (sflags & SVf_NOK) | |
4618 | SvFLAGS(dstr) |= SVf_NOK; | |
463ee0b2 | 4619 | SvNVX(dstr) = SvNVX(sstr); |
79072805 | 4620 | } |
8990e307 | 4621 | if (sflags & SVp_IOK) { |
3332b3c1 JH |
4622 | (void)SvIOKp_on(dstr); |
4623 | if (sflags & SVf_IOK) | |
4624 | SvFLAGS(dstr) |= SVf_IOK; | |
2b1c7e3e | 4625 | if (sflags & SVf_IVisUV) |
25da4f38 | 4626 | SvIsUV_on(dstr); |
463ee0b2 | 4627 | SvIVX(dstr) = SvIVX(sstr); |
79072805 | 4628 | } |
92f0c265 | 4629 | if (SvVOK(sstr)) { |
ece467f9 JP |
4630 | MAGIC *smg = mg_find(sstr,PERL_MAGIC_vstring); |
4631 | sv_magic(dstr, NULL, PERL_MAGIC_vstring, | |
4632 | smg->mg_ptr, smg->mg_len); | |
439cb1c4 | 4633 | SvRMAGICAL_on(dstr); |
92f0c265 | 4634 | } |
79072805 | 4635 | } |
8990e307 | 4636 | else if (sflags & SVp_IOK) { |
3332b3c1 JH |
4637 | if (sflags & SVf_IOK) |
4638 | (void)SvIOK_only(dstr); | |
4639 | else { | |
9cbac4c7 DM |
4640 | (void)SvOK_off(dstr); |
4641 | (void)SvIOKp_on(dstr); | |
3332b3c1 JH |
4642 | } |
4643 | /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */ | |
2b1c7e3e | 4644 | if (sflags & SVf_IVisUV) |
25da4f38 | 4645 | SvIsUV_on(dstr); |
3332b3c1 JH |
4646 | SvIVX(dstr) = SvIVX(sstr); |
4647 | if (sflags & SVp_NOK) { | |
4648 | if (sflags & SVf_NOK) | |
4649 | (void)SvNOK_on(dstr); | |
4650 | else | |
4651 | (void)SvNOKp_on(dstr); | |
4652 | SvNVX(dstr) = SvNVX(sstr); | |
4653 | } | |
4654 | } | |
4655 | else if (sflags & SVp_NOK) { | |
4656 | if (sflags & SVf_NOK) | |
4657 | (void)SvNOK_only(dstr); | |
4658 | else { | |
9cbac4c7 | 4659 | (void)SvOK_off(dstr); |
3332b3c1 JH |
4660 | SvNOKp_on(dstr); |
4661 | } | |
4662 | SvNVX(dstr) = SvNVX(sstr); | |
79072805 LW |
4663 | } |
4664 | else { | |
20408e3c | 4665 | if (dtype == SVt_PVGV) { |
e476b1b5 | 4666 | if (ckWARN(WARN_MISC)) |
9014280d | 4667 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Undefined value assigned to typeglob"); |
20408e3c GS |
4668 | } |
4669 | else | |
4670 | (void)SvOK_off(dstr); | |
a0d0e21e | 4671 | } |
27c9684d AP |
4672 | if (SvTAINTED(sstr)) |
4673 | SvTAINT(dstr); | |
79072805 LW |
4674 | } |
4675 | ||
954c1994 GS |
4676 | /* |
4677 | =for apidoc sv_setsv_mg | |
4678 | ||
4679 | Like C<sv_setsv>, but also handles 'set' magic. | |
4680 | ||
4681 | =cut | |
4682 | */ | |
4683 | ||
79072805 | 4684 | void |
864dbfa3 | 4685 | Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr) |
ef50df4b GS |
4686 | { |
4687 | sv_setsv(dstr,sstr); | |
4688 | SvSETMAGIC(dstr); | |
4689 | } | |
4690 | ||
ed252734 NC |
4691 | #ifdef PERL_COPY_ON_WRITE |
4692 | SV * | |
4693 | Perl_sv_setsv_cow(pTHX_ SV *dstr, SV *sstr) | |
4694 | { | |
4695 | STRLEN cur = SvCUR(sstr); | |
4696 | STRLEN len = SvLEN(sstr); | |
4697 | register char *new_pv; | |
4698 | ||
4699 | if (DEBUG_C_TEST) { | |
4700 | PerlIO_printf(Perl_debug_log, "Fast copy on write: %p -> %p\n", | |
4701 | sstr, dstr); | |
4702 | sv_dump(sstr); | |
4703 | if (dstr) | |
4704 | sv_dump(dstr); | |
4705 | } | |
4706 | ||
4707 | if (dstr) { | |
4708 | if (SvTHINKFIRST(dstr)) | |
4709 | sv_force_normal_flags(dstr, SV_COW_DROP_PV); | |
4710 | else if (SvPVX(dstr)) | |
4711 | Safefree(SvPVX(dstr)); | |
4712 | } | |
4713 | else | |
4714 | new_SV(dstr); | |
b988aa42 | 4715 | (void)SvUPGRADE (dstr, SVt_PVIV); |
ed252734 NC |
4716 | |
4717 | assert (SvPOK(sstr)); | |
4718 | assert (SvPOKp(sstr)); | |
4719 | assert (!SvIOK(sstr)); | |
4720 | assert (!SvIOKp(sstr)); | |
4721 | assert (!SvNOK(sstr)); | |
4722 | assert (!SvNOKp(sstr)); | |
4723 | ||
4724 | if (SvIsCOW(sstr)) { | |
4725 | ||
4726 | if (SvLEN(sstr) == 0) { | |
4727 | /* source is a COW shared hash key. */ | |
4728 | UV hash = SvUVX(sstr); | |
4729 | DEBUG_C(PerlIO_printf(Perl_debug_log, | |
4730 | "Fast copy on write: Sharing hash\n")); | |
4731 | SvUVX(dstr) = hash; | |
4732 | new_pv = sharepvn(SvPVX(sstr), (SvUTF8(sstr)?-cur:cur), hash); | |
4733 | goto common_exit; | |
4734 | } | |
4735 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); | |
4736 | } else { | |
4737 | assert ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS); | |
b988aa42 | 4738 | (void)SvUPGRADE (sstr, SVt_PVIV); |
ed252734 NC |
4739 | SvREADONLY_on(sstr); |
4740 | SvFAKE_on(sstr); | |
4741 | DEBUG_C(PerlIO_printf(Perl_debug_log, | |
4742 | "Fast copy on write: Converting sstr to COW\n")); | |
4743 | SV_COW_NEXT_SV_SET(dstr, sstr); | |
4744 | } | |
4745 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
4746 | new_pv = SvPVX(sstr); | |
4747 | ||
4748 | common_exit: | |
4749 | SvPV_set(dstr, new_pv); | |
4750 | SvFLAGS(dstr) = (SVt_PVIV|SVf_POK|SVp_POK|SVf_FAKE|SVf_READONLY); | |
4751 | if (SvUTF8(sstr)) | |
4752 | SvUTF8_on(dstr); | |
4753 | SvLEN(dstr) = len; | |
4754 | SvCUR(dstr) = cur; | |
4755 | if (DEBUG_C_TEST) { | |
4756 | sv_dump(dstr); | |
4757 | } | |
4758 | return dstr; | |
4759 | } | |
4760 | #endif | |
4761 | ||
954c1994 GS |
4762 | /* |
4763 | =for apidoc sv_setpvn | |
4764 | ||
4765 | Copies a string into an SV. The C<len> parameter indicates the number of | |
9e09f5f2 MHM |
4766 | bytes to be copied. If the C<ptr> argument is NULL the SV will become |
4767 | undefined. Does not handle 'set' magic. See C<sv_setpvn_mg>. | |
954c1994 GS |
4768 | |
4769 | =cut | |
4770 | */ | |
4771 | ||
ef50df4b | 4772 | void |
864dbfa3 | 4773 | Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
79072805 | 4774 | { |
c6f8c383 | 4775 | register char *dptr; |
22c522df | 4776 | |
765f542d | 4777 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 4778 | if (!ptr) { |
a0d0e21e | 4779 | (void)SvOK_off(sv); |
463ee0b2 LW |
4780 | return; |
4781 | } | |
22c522df JH |
4782 | else { |
4783 | /* len is STRLEN which is unsigned, need to copy to signed */ | |
4784 | IV iv = len; | |
9c5ffd7c JH |
4785 | if (iv < 0) |
4786 | Perl_croak(aTHX_ "panic: sv_setpvn called with negative strlen"); | |
22c522df | 4787 | } |
6fc92669 | 4788 | (void)SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 4789 | |
79072805 | 4790 | SvGROW(sv, len + 1); |
c6f8c383 GA |
4791 | dptr = SvPVX(sv); |
4792 | Move(ptr,dptr,len,char); | |
4793 | dptr[len] = '\0'; | |
79072805 | 4794 | SvCUR_set(sv, len); |
1aa99e6b | 4795 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4796 | SvTAINT(sv); |
79072805 LW |
4797 | } |
4798 | ||
954c1994 GS |
4799 | /* |
4800 | =for apidoc sv_setpvn_mg | |
4801 | ||
4802 | Like C<sv_setpvn>, but also handles 'set' magic. | |
4803 | ||
4804 | =cut | |
4805 | */ | |
4806 | ||
79072805 | 4807 | void |
864dbfa3 | 4808 | Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
ef50df4b GS |
4809 | { |
4810 | sv_setpvn(sv,ptr,len); | |
4811 | SvSETMAGIC(sv); | |
4812 | } | |
4813 | ||
954c1994 GS |
4814 | /* |
4815 | =for apidoc sv_setpv | |
4816 | ||
4817 | Copies a string into an SV. The string must be null-terminated. Does not | |
4818 | handle 'set' magic. See C<sv_setpv_mg>. | |
4819 | ||
4820 | =cut | |
4821 | */ | |
4822 | ||
ef50df4b | 4823 | void |
864dbfa3 | 4824 | Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
4825 | { |
4826 | register STRLEN len; | |
4827 | ||
765f542d | 4828 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 4829 | if (!ptr) { |
a0d0e21e | 4830 | (void)SvOK_off(sv); |
463ee0b2 LW |
4831 | return; |
4832 | } | |
79072805 | 4833 | len = strlen(ptr); |
6fc92669 | 4834 | (void)SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 4835 | |
79072805 | 4836 | SvGROW(sv, len + 1); |
463ee0b2 | 4837 | Move(ptr,SvPVX(sv),len+1,char); |
79072805 | 4838 | SvCUR_set(sv, len); |
1aa99e6b | 4839 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 LW |
4840 | SvTAINT(sv); |
4841 | } | |
4842 | ||
954c1994 GS |
4843 | /* |
4844 | =for apidoc sv_setpv_mg | |
4845 | ||
4846 | Like C<sv_setpv>, but also handles 'set' magic. | |
4847 | ||
4848 | =cut | |
4849 | */ | |
4850 | ||
463ee0b2 | 4851 | void |
864dbfa3 | 4852 | Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b GS |
4853 | { |
4854 | sv_setpv(sv,ptr); | |
4855 | SvSETMAGIC(sv); | |
4856 | } | |
4857 | ||
954c1994 GS |
4858 | /* |
4859 | =for apidoc sv_usepvn | |
4860 | ||
4861 | Tells an SV to use C<ptr> to find its string value. Normally the string is | |
1c846c1f | 4862 | stored inside the SV but sv_usepvn allows the SV to use an outside string. |
954c1994 GS |
4863 | The C<ptr> should point to memory that was allocated by C<malloc>. The |
4864 | string length, C<len>, must be supplied. This function will realloc the | |
4865 | memory pointed to by C<ptr>, so that pointer should not be freed or used by | |
4866 | the programmer after giving it to sv_usepvn. Does not handle 'set' magic. | |
4867 | See C<sv_usepvn_mg>. | |
4868 | ||
4869 | =cut | |
4870 | */ | |
4871 | ||
ef50df4b | 4872 | void |
864dbfa3 | 4873 | Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len) |
463ee0b2 | 4874 | { |
765f542d | 4875 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
c6f8c383 | 4876 | (void)SvUPGRADE(sv, SVt_PV); |
463ee0b2 | 4877 | if (!ptr) { |
a0d0e21e | 4878 | (void)SvOK_off(sv); |
463ee0b2 LW |
4879 | return; |
4880 | } | |
a0ed51b3 | 4881 | (void)SvOOK_off(sv); |
50483b2c | 4882 | if (SvPVX(sv) && SvLEN(sv)) |
463ee0b2 LW |
4883 | Safefree(SvPVX(sv)); |
4884 | Renew(ptr, len+1, char); | |
4885 | SvPVX(sv) = ptr; | |
4886 | SvCUR_set(sv, len); | |
4887 | SvLEN_set(sv, len+1); | |
4888 | *SvEND(sv) = '\0'; | |
1aa99e6b | 4889 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4890 | SvTAINT(sv); |
79072805 LW |
4891 | } |
4892 | ||
954c1994 GS |
4893 | /* |
4894 | =for apidoc sv_usepvn_mg | |
4895 | ||
4896 | Like C<sv_usepvn>, but also handles 'set' magic. | |
4897 | ||
4898 | =cut | |
4899 | */ | |
4900 | ||
ef50df4b | 4901 | void |
864dbfa3 | 4902 | Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len) |
ef50df4b | 4903 | { |
51c1089b | 4904 | sv_usepvn(sv,ptr,len); |
ef50df4b GS |
4905 | SvSETMAGIC(sv); |
4906 | } | |
4907 | ||
765f542d NC |
4908 | #ifdef PERL_COPY_ON_WRITE |
4909 | /* Need to do this *after* making the SV normal, as we need the buffer | |
4910 | pointer to remain valid until after we've copied it. If we let go too early, | |
4911 | another thread could invalidate it by unsharing last of the same hash key | |
4912 | (which it can do by means other than releasing copy-on-write Svs) | |
4913 | or by changing the other copy-on-write SVs in the loop. */ | |
4914 | STATIC void | |
4915 | S_sv_release_COW(pTHX_ register SV *sv, char *pvx, STRLEN cur, STRLEN len, | |
4916 | U32 hash, SV *after) | |
4917 | { | |
4918 | if (len) { /* this SV was SvIsCOW_normal(sv) */ | |
4919 | /* we need to find the SV pointing to us. */ | |
4920 | SV *current = SV_COW_NEXT_SV(after); | |
4921 | ||
4922 | if (current == sv) { | |
4923 | /* The SV we point to points back to us (there were only two of us | |
4924 | in the loop.) | |
4925 | Hence other SV is no longer copy on write either. */ | |
4926 | SvFAKE_off(after); | |
4927 | SvREADONLY_off(after); | |
4928 | } else { | |
4929 | /* We need to follow the pointers around the loop. */ | |
4930 | SV *next; | |
4931 | while ((next = SV_COW_NEXT_SV(current)) != sv) { | |
4932 | assert (next); | |
4933 | current = next; | |
4934 | /* don't loop forever if the structure is bust, and we have | |
4935 | a pointer into a closed loop. */ | |
4936 | assert (current != after); | |
e419cbc5 | 4937 | assert (SvPVX(current) == pvx); |
765f542d NC |
4938 | } |
4939 | /* Make the SV before us point to the SV after us. */ | |
a29f6d03 | 4940 | SV_COW_NEXT_SV_SET(current, after); |
765f542d NC |
4941 | } |
4942 | } else { | |
4943 | unsharepvn(pvx, SvUTF8(sv) ? -(I32)cur : cur, hash); | |
4944 | } | |
4945 | } | |
4946 | ||
4947 | int | |
4948 | Perl_sv_release_IVX(pTHX_ register SV *sv) | |
4949 | { | |
4950 | if (SvIsCOW(sv)) | |
4951 | sv_force_normal_flags(sv, 0); | |
4952 | return SvOOK_off(sv); | |
4953 | } | |
4954 | #endif | |
645c22ef DM |
4955 | /* |
4956 | =for apidoc sv_force_normal_flags | |
4957 | ||
4958 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
4959 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
765f542d NC |
4960 | an xpvmg; if we're a copy-on-write scalar, this is the on-write time when |
4961 | we do the copy, and is also used locally. If C<SV_COW_DROP_PV> is set | |
4962 | then a copy-on-write scalar drops its PV buffer (if any) and becomes | |
4963 | SvPOK_off rather than making a copy. (Used where this scalar is about to be | |
d3050d9d | 4964 | set to some other value.) In addition, the C<flags> parameter gets passed to |
765f542d NC |
4965 | C<sv_unref_flags()> when unrefing. C<sv_force_normal> calls this function |
4966 | with flags set to 0. | |
645c22ef DM |
4967 | |
4968 | =cut | |
4969 | */ | |
4970 | ||
6fc92669 | 4971 | void |
840a7b70 | 4972 | Perl_sv_force_normal_flags(pTHX_ register SV *sv, U32 flags) |
0f15f207 | 4973 | { |
765f542d NC |
4974 | #ifdef PERL_COPY_ON_WRITE |
4975 | if (SvREADONLY(sv)) { | |
4976 | /* At this point I believe I should acquire a global SV mutex. */ | |
4977 | if (SvFAKE(sv)) { | |
4978 | char *pvx = SvPVX(sv); | |
4979 | STRLEN len = SvLEN(sv); | |
4980 | STRLEN cur = SvCUR(sv); | |
4981 | U32 hash = SvUVX(sv); | |
4982 | SV *next = SV_COW_NEXT_SV(sv); /* next COW sv in the loop. */ | |
46187eeb NC |
4983 | if (DEBUG_C_TEST) { |
4984 | PerlIO_printf(Perl_debug_log, | |
4985 | "Copy on write: Force normal %ld\n", | |
4986 | (long) flags); | |
e419cbc5 | 4987 | sv_dump(sv); |
46187eeb | 4988 | } |
765f542d NC |
4989 | SvFAKE_off(sv); |
4990 | SvREADONLY_off(sv); | |
4991 | /* This SV doesn't own the buffer, so need to New() a new one: */ | |
4992 | SvPVX(sv) = 0; | |
4993 | SvLEN(sv) = 0; | |
4994 | if (flags & SV_COW_DROP_PV) { | |
4995 | /* OK, so we don't need to copy our buffer. */ | |
4996 | SvPOK_off(sv); | |
4997 | } else { | |
4998 | SvGROW(sv, cur + 1); | |
4999 | Move(pvx,SvPVX(sv),cur,char); | |
5000 | SvCUR(sv) = cur; | |
5001 | *SvEND(sv) = '\0'; | |
5002 | } | |
e419cbc5 | 5003 | sv_release_COW(sv, pvx, cur, len, hash, next); |
46187eeb | 5004 | if (DEBUG_C_TEST) { |
e419cbc5 | 5005 | sv_dump(sv); |
46187eeb | 5006 | } |
765f542d | 5007 | } |
923e4eb5 | 5008 | else if (IN_PERL_RUNTIME) |
765f542d NC |
5009 | Perl_croak(aTHX_ PL_no_modify); |
5010 | /* At this point I believe that I can drop the global SV mutex. */ | |
5011 | } | |
5012 | #else | |
2213622d | 5013 | if (SvREADONLY(sv)) { |
1c846c1f NIS |
5014 | if (SvFAKE(sv)) { |
5015 | char *pvx = SvPVX(sv); | |
5c98da1c | 5016 | int is_utf8 = SvUTF8(sv); |
1c846c1f NIS |
5017 | STRLEN len = SvCUR(sv); |
5018 | U32 hash = SvUVX(sv); | |
10bcdfd6 NC |
5019 | SvFAKE_off(sv); |
5020 | SvREADONLY_off(sv); | |
5c98da1c NC |
5021 | SvPVX(sv) = 0; |
5022 | SvLEN(sv) = 0; | |
1c846c1f NIS |
5023 | SvGROW(sv, len + 1); |
5024 | Move(pvx,SvPVX(sv),len,char); | |
5025 | *SvEND(sv) = '\0'; | |
5c98da1c | 5026 | unsharepvn(pvx, is_utf8 ? -(I32)len : len, hash); |
1c846c1f | 5027 | } |
923e4eb5 | 5028 | else if (IN_PERL_RUNTIME) |
cea2e8a9 | 5029 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 5030 | } |
765f542d | 5031 | #endif |
2213622d | 5032 | if (SvROK(sv)) |
840a7b70 | 5033 | sv_unref_flags(sv, flags); |
6fc92669 GS |
5034 | else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) |
5035 | sv_unglob(sv); | |
0f15f207 | 5036 | } |
1c846c1f | 5037 | |
645c22ef DM |
5038 | /* |
5039 | =for apidoc sv_force_normal | |
5040 | ||
5041 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
5042 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
5043 | an xpvmg. See also C<sv_force_normal_flags>. | |
5044 | ||
5045 | =cut | |
5046 | */ | |
5047 | ||
840a7b70 IZ |
5048 | void |
5049 | Perl_sv_force_normal(pTHX_ register SV *sv) | |
5050 | { | |
5051 | sv_force_normal_flags(sv, 0); | |
5052 | } | |
5053 | ||
954c1994 GS |
5054 | /* |
5055 | =for apidoc sv_chop | |
5056 | ||
1c846c1f | 5057 | Efficient removal of characters from the beginning of the string buffer. |
954c1994 GS |
5058 | SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside |
5059 | the string buffer. The C<ptr> becomes the first character of the adjusted | |
645c22ef | 5060 | string. Uses the "OOK hack". |
31869a79 AE |
5061 | Beware: after this function returns, C<ptr> and SvPVX(sv) may no longer |
5062 | refer to the same chunk of data. | |
954c1994 GS |
5063 | |
5064 | =cut | |
5065 | */ | |
5066 | ||
79072805 | 5067 | void |
645c22ef | 5068 | Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) |
79072805 LW |
5069 | { |
5070 | register STRLEN delta; | |
a0d0e21e | 5071 | if (!ptr || !SvPOKp(sv)) |
79072805 | 5072 | return; |
31869a79 | 5073 | delta = ptr - SvPVX(sv); |
2213622d | 5074 | SV_CHECK_THINKFIRST(sv); |
79072805 LW |
5075 | if (SvTYPE(sv) < SVt_PVIV) |
5076 | sv_upgrade(sv,SVt_PVIV); | |
5077 | ||
5078 | if (!SvOOK(sv)) { | |
50483b2c JD |
5079 | if (!SvLEN(sv)) { /* make copy of shared string */ |
5080 | char *pvx = SvPVX(sv); | |
5081 | STRLEN len = SvCUR(sv); | |
5082 | SvGROW(sv, len + 1); | |
5083 | Move(pvx,SvPVX(sv),len,char); | |
5084 | *SvEND(sv) = '\0'; | |
5085 | } | |
463ee0b2 | 5086 | SvIVX(sv) = 0; |
a4bfb290 AB |
5087 | /* Same SvOOK_on but SvOOK_on does a SvIOK_off |
5088 | and we do that anyway inside the SvNIOK_off | |
5089 | */ | |
5090 | SvFLAGS(sv) |= SVf_OOK; | |
79072805 | 5091 | } |
a4bfb290 | 5092 | SvNIOK_off(sv); |
79072805 LW |
5093 | SvLEN(sv) -= delta; |
5094 | SvCUR(sv) -= delta; | |
463ee0b2 LW |
5095 | SvPVX(sv) += delta; |
5096 | SvIVX(sv) += delta; | |
79072805 LW |
5097 | } |
5098 | ||
09540bc3 JH |
5099 | /* sv_catpvn() is now a macro using Perl_sv_catpvn_flags(); |
5100 | * this function provided for binary compatibility only | |
5101 | */ | |
5102 | ||
5103 | void | |
5104 | Perl_sv_catpvn(pTHX_ SV *dsv, const char* sstr, STRLEN slen) | |
5105 | { | |
5106 | sv_catpvn_flags(dsv, sstr, slen, SV_GMAGIC); | |
5107 | } | |
5108 | ||
954c1994 GS |
5109 | /* |
5110 | =for apidoc sv_catpvn | |
5111 | ||
5112 | Concatenates the string onto the end of the string which is in the SV. The | |
1e54db1a JH |
5113 | C<len> indicates number of bytes to copy. If the SV has the UTF-8 |
5114 | status set, then the bytes appended should be valid UTF-8. | |
d5ce4a7c | 5115 | Handles 'get' magic, but not 'set' magic. See C<sv_catpvn_mg>. |
954c1994 | 5116 | |
8d6d96c1 HS |
5117 | =for apidoc sv_catpvn_flags |
5118 | ||
5119 | Concatenates the string onto the end of the string which is in the SV. The | |
1e54db1a JH |
5120 | C<len> indicates number of bytes to copy. If the SV has the UTF-8 |
5121 | status set, then the bytes appended should be valid UTF-8. | |
8d6d96c1 HS |
5122 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<dsv> if |
5123 | appropriate, else not. C<sv_catpvn> and C<sv_catpvn_nomg> are implemented | |
5124 | in terms of this function. | |
5125 | ||
5126 | =cut | |
5127 | */ | |
5128 | ||
5129 | void | |
5130 | Perl_sv_catpvn_flags(pTHX_ register SV *dsv, register const char *sstr, register STRLEN slen, I32 flags) | |
5131 | { | |
5132 | STRLEN dlen; | |
5133 | char *dstr; | |
5134 | ||
5135 | dstr = SvPV_force_flags(dsv, dlen, flags); | |
5136 | SvGROW(dsv, dlen + slen + 1); | |
5137 | if (sstr == dstr) | |
5138 | sstr = SvPVX(dsv); | |
5139 | Move(sstr, SvPVX(dsv) + dlen, slen, char); | |
5140 | SvCUR(dsv) += slen; | |
5141 | *SvEND(dsv) = '\0'; | |
5142 | (void)SvPOK_only_UTF8(dsv); /* validate pointer */ | |
5143 | SvTAINT(dsv); | |
79072805 LW |
5144 | } |
5145 | ||
954c1994 GS |
5146 | /* |
5147 | =for apidoc sv_catpvn_mg | |
5148 | ||
5149 | Like C<sv_catpvn>, but also handles 'set' magic. | |
5150 | ||
5151 | =cut | |
5152 | */ | |
5153 | ||
79072805 | 5154 | void |
864dbfa3 | 5155 | Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
ef50df4b GS |
5156 | { |
5157 | sv_catpvn(sv,ptr,len); | |
5158 | SvSETMAGIC(sv); | |
5159 | } | |
5160 | ||
09540bc3 JH |
5161 | /* sv_catsv() is now a macro using Perl_sv_catsv_flags(); |
5162 | * this function provided for binary compatibility only | |
5163 | */ | |
5164 | ||
5165 | void | |
5166 | Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr) | |
5167 | { | |
5168 | sv_catsv_flags(dstr, sstr, SV_GMAGIC); | |
5169 | } | |
5170 | ||
954c1994 GS |
5171 | /* |
5172 | =for apidoc sv_catsv | |
5173 | ||
13e8c8e3 JH |
5174 | Concatenates the string from SV C<ssv> onto the end of the string in |
5175 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. Handles 'get' magic, but | |
5176 | not 'set' magic. See C<sv_catsv_mg>. | |
954c1994 | 5177 | |
8d6d96c1 HS |
5178 | =for apidoc sv_catsv_flags |
5179 | ||
5180 | Concatenates the string from SV C<ssv> onto the end of the string in | |
5181 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. If C<flags> has C<SV_GMAGIC> | |
5182 | bit set, will C<mg_get> on the SVs if appropriate, else not. C<sv_catsv> | |
5183 | and C<sv_catsv_nomg> are implemented in terms of this function. | |
5184 | ||
5185 | =cut */ | |
5186 | ||
ef50df4b | 5187 | void |
8d6d96c1 | 5188 | Perl_sv_catsv_flags(pTHX_ SV *dsv, register SV *ssv, I32 flags) |
79072805 | 5189 | { |
13e8c8e3 JH |
5190 | char *spv; |
5191 | STRLEN slen; | |
46199a12 | 5192 | if (!ssv) |
79072805 | 5193 | return; |
46199a12 | 5194 | if ((spv = SvPV(ssv, slen))) { |
4fd84b44 AD |
5195 | /* sutf8 and dutf8 were type bool, but under USE_ITHREADS, |
5196 | gcc version 2.95.2 20000220 (Debian GNU/Linux) for | |
8cf8f3d1 NIS |
5197 | Linux xxx 2.2.17 on sparc64 with gcc -O2, we erroneously |
5198 | get dutf8 = 0x20000000, (i.e. SVf_UTF8) even though | |
4fd84b44 AD |
5199 | dsv->sv_flags doesn't have that bit set. |
5200 | Andy Dougherty 12 Oct 2001 | |
5201 | */ | |
5202 | I32 sutf8 = DO_UTF8(ssv); | |
5203 | I32 dutf8; | |
13e8c8e3 | 5204 | |
8d6d96c1 HS |
5205 | if (SvGMAGICAL(dsv) && (flags & SV_GMAGIC)) |
5206 | mg_get(dsv); | |
5207 | dutf8 = DO_UTF8(dsv); | |
5208 | ||
5209 | if (dutf8 != sutf8) { | |
13e8c8e3 | 5210 | if (dutf8) { |
46199a12 | 5211 | /* Not modifying source SV, so taking a temporary copy. */ |
8d6d96c1 | 5212 | SV* csv = sv_2mortal(newSVpvn(spv, slen)); |
13e8c8e3 | 5213 | |
46199a12 | 5214 | sv_utf8_upgrade(csv); |
8d6d96c1 | 5215 | spv = SvPV(csv, slen); |
13e8c8e3 | 5216 | } |
8d6d96c1 HS |
5217 | else |
5218 | sv_utf8_upgrade_nomg(dsv); | |
e84ff256 | 5219 | } |
8d6d96c1 | 5220 | sv_catpvn_nomg(dsv, spv, slen); |
560a288e | 5221 | } |
79072805 LW |
5222 | } |
5223 | ||
954c1994 GS |
5224 | /* |
5225 | =for apidoc sv_catsv_mg | |
5226 | ||
5227 | Like C<sv_catsv>, but also handles 'set' magic. | |
5228 | ||
5229 | =cut | |
5230 | */ | |
5231 | ||
79072805 | 5232 | void |
46199a12 | 5233 | Perl_sv_catsv_mg(pTHX_ SV *dsv, register SV *ssv) |
ef50df4b | 5234 | { |
46199a12 JH |
5235 | sv_catsv(dsv,ssv); |
5236 | SvSETMAGIC(dsv); | |
ef50df4b GS |
5237 | } |
5238 | ||
954c1994 GS |
5239 | /* |
5240 | =for apidoc sv_catpv | |
5241 | ||
5242 | Concatenates the string onto the end of the string which is in the SV. | |
1e54db1a JH |
5243 | If the SV has the UTF-8 status set, then the bytes appended should be |
5244 | valid UTF-8. Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>. | |
954c1994 | 5245 | |
d5ce4a7c | 5246 | =cut */ |
954c1994 | 5247 | |
ef50df4b | 5248 | void |
0c981600 | 5249 | Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
5250 | { |
5251 | register STRLEN len; | |
463ee0b2 | 5252 | STRLEN tlen; |
748a9306 | 5253 | char *junk; |
79072805 | 5254 | |
0c981600 | 5255 | if (!ptr) |
79072805 | 5256 | return; |
748a9306 | 5257 | junk = SvPV_force(sv, tlen); |
0c981600 | 5258 | len = strlen(ptr); |
463ee0b2 | 5259 | SvGROW(sv, tlen + len + 1); |
0c981600 JH |
5260 | if (ptr == junk) |
5261 | ptr = SvPVX(sv); | |
5262 | Move(ptr,SvPVX(sv)+tlen,len+1,char); | |
79072805 | 5263 | SvCUR(sv) += len; |
d41ff1b8 | 5264 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 5265 | SvTAINT(sv); |
79072805 LW |
5266 | } |
5267 | ||
954c1994 GS |
5268 | /* |
5269 | =for apidoc sv_catpv_mg | |
5270 | ||
5271 | Like C<sv_catpv>, but also handles 'set' magic. | |
5272 | ||
5273 | =cut | |
5274 | */ | |
5275 | ||
ef50df4b | 5276 | void |
0c981600 | 5277 | Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b | 5278 | { |
0c981600 | 5279 | sv_catpv(sv,ptr); |
ef50df4b GS |
5280 | SvSETMAGIC(sv); |
5281 | } | |
5282 | ||
645c22ef DM |
5283 | /* |
5284 | =for apidoc newSV | |
5285 | ||
5286 | Create a new null SV, or if len > 0, create a new empty SVt_PV type SV | |
5287 | with an initial PV allocation of len+1. Normally accessed via the C<NEWSV> | |
5288 | macro. | |
5289 | ||
5290 | =cut | |
5291 | */ | |
5292 | ||
79072805 | 5293 | SV * |
864dbfa3 | 5294 | Perl_newSV(pTHX_ STRLEN len) |
79072805 LW |
5295 | { |
5296 | register SV *sv; | |
1c846c1f | 5297 | |
4561caa4 | 5298 | new_SV(sv); |
79072805 LW |
5299 | if (len) { |
5300 | sv_upgrade(sv, SVt_PV); | |
5301 | SvGROW(sv, len + 1); | |
5302 | } | |
5303 | return sv; | |
5304 | } | |
954c1994 | 5305 | /* |
92110913 | 5306 | =for apidoc sv_magicext |
954c1994 | 5307 | |
68795e93 | 5308 | Adds magic to an SV, upgrading it if necessary. Applies the |
92110913 NIS |
5309 | supplied vtable and returns pointer to the magic added. |
5310 | ||
5311 | Note that sv_magicext will allow things that sv_magic will not. | |
68795e93 | 5312 | In particular you can add magic to SvREADONLY SVs and and more than |
92110913 | 5313 | one instance of the same 'how' |
645c22ef | 5314 | |
92110913 | 5315 | I C<namelen> is greater then zero then a savepvn() I<copy> of C<name> is stored, |
68795e93 NIS |
5316 | if C<namelen> is zero then C<name> is stored as-is and - as another special |
5317 | case - if C<(name && namelen == HEf_SVKEY)> then C<name> is assumed to contain | |
92110913 NIS |
5318 | an C<SV*> and has its REFCNT incremented |
5319 | ||
5320 | (This is now used as a subroutine by sv_magic.) | |
954c1994 GS |
5321 | |
5322 | =cut | |
5323 | */ | |
92110913 NIS |
5324 | MAGIC * |
5325 | Perl_sv_magicext(pTHX_ SV* sv, SV* obj, int how, MGVTBL *vtable, | |
5326 | const char* name, I32 namlen) | |
79072805 LW |
5327 | { |
5328 | MAGIC* mg; | |
68795e93 | 5329 | |
92110913 NIS |
5330 | if (SvTYPE(sv) < SVt_PVMG) { |
5331 | (void)SvUPGRADE(sv, SVt_PVMG); | |
463ee0b2 | 5332 | } |
79072805 LW |
5333 | Newz(702,mg, 1, MAGIC); |
5334 | mg->mg_moremagic = SvMAGIC(sv); | |
79072805 | 5335 | SvMAGIC(sv) = mg; |
75f9d97a | 5336 | |
18808301 | 5337 | /* Some magic sontains a reference loop, where the sv and object refer to |
bb03859b RS |
5338 | each other. To prevent a reference loop that would prevent such |
5339 | objects being freed, we look for such loops and if we find one we | |
87f0b213 JH |
5340 | avoid incrementing the object refcount. |
5341 | ||
5342 | Note we cannot do this to avoid self-tie loops as intervening RV must | |
b5ccf5f2 | 5343 | have its REFCNT incremented to keep it in existence. |
87f0b213 JH |
5344 | |
5345 | */ | |
14befaf4 DM |
5346 | if (!obj || obj == sv || |
5347 | how == PERL_MAGIC_arylen || | |
5348 | how == PERL_MAGIC_qr || | |
75f9d97a JH |
5349 | (SvTYPE(obj) == SVt_PVGV && |
5350 | (GvSV(obj) == sv || GvHV(obj) == (HV*)sv || GvAV(obj) == (AV*)sv || | |
5351 | GvCV(obj) == (CV*)sv || GvIOp(obj) == (IO*)sv || | |
2628be26 | 5352 | GvFORM(obj) == (CV*)sv))) |
75f9d97a | 5353 | { |
8990e307 | 5354 | mg->mg_obj = obj; |
75f9d97a | 5355 | } |
85e6fe83 | 5356 | else { |
8990e307 | 5357 | mg->mg_obj = SvREFCNT_inc(obj); |
85e6fe83 LW |
5358 | mg->mg_flags |= MGf_REFCOUNTED; |
5359 | } | |
b5ccf5f2 YST |
5360 | |
5361 | /* Normal self-ties simply pass a null object, and instead of | |
5362 | using mg_obj directly, use the SvTIED_obj macro to produce a | |
5363 | new RV as needed. For glob "self-ties", we are tieing the PVIO | |
5364 | with an RV obj pointing to the glob containing the PVIO. In | |
5365 | this case, to avoid a reference loop, we need to weaken the | |
5366 | reference. | |
5367 | */ | |
5368 | ||
5369 | if (how == PERL_MAGIC_tiedscalar && SvTYPE(sv) == SVt_PVIO && | |
5370 | obj && SvROK(obj) && GvIO(SvRV(obj)) == (IO*)sv) | |
5371 | { | |
5372 | sv_rvweaken(obj); | |
5373 | } | |
5374 | ||
79072805 | 5375 | mg->mg_type = how; |
565764a8 | 5376 | mg->mg_len = namlen; |
9cbac4c7 | 5377 | if (name) { |
92110913 | 5378 | if (namlen > 0) |
1edc1566 | 5379 | mg->mg_ptr = savepvn(name, namlen); |
c6ee37c5 | 5380 | else if (namlen == HEf_SVKEY) |
1edc1566 | 5381 | mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name); |
68795e93 | 5382 | else |
92110913 | 5383 | mg->mg_ptr = (char *) name; |
9cbac4c7 | 5384 | } |
92110913 | 5385 | mg->mg_virtual = vtable; |
68795e93 | 5386 | |
92110913 NIS |
5387 | mg_magical(sv); |
5388 | if (SvGMAGICAL(sv)) | |
5389 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
5390 | return mg; | |
5391 | } | |
5392 | ||
5393 | /* | |
5394 | =for apidoc sv_magic | |
1c846c1f | 5395 | |
92110913 NIS |
5396 | Adds magic to an SV. First upgrades C<sv> to type C<SVt_PVMG> if necessary, |
5397 | then adds a new magic item of type C<how> to the head of the magic list. | |
5398 | ||
5399 | =cut | |
5400 | */ | |
5401 | ||
5402 | void | |
5403 | Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen) | |
68795e93 | 5404 | { |
92110913 NIS |
5405 | MAGIC* mg; |
5406 | MGVTBL *vtable = 0; | |
5407 | ||
765f542d NC |
5408 | #ifdef PERL_COPY_ON_WRITE |
5409 | if (SvIsCOW(sv)) | |
5410 | sv_force_normal_flags(sv, 0); | |
5411 | #endif | |
92110913 | 5412 | if (SvREADONLY(sv)) { |
923e4eb5 | 5413 | if (IN_PERL_RUNTIME |
92110913 NIS |
5414 | && how != PERL_MAGIC_regex_global |
5415 | && how != PERL_MAGIC_bm | |
5416 | && how != PERL_MAGIC_fm | |
5417 | && how != PERL_MAGIC_sv | |
e6469971 | 5418 | && how != PERL_MAGIC_backref |
92110913 NIS |
5419 | ) |
5420 | { | |
5421 | Perl_croak(aTHX_ PL_no_modify); | |
5422 | } | |
5423 | } | |
5424 | if (SvMAGICAL(sv) || (how == PERL_MAGIC_taint && SvTYPE(sv) >= SVt_PVMG)) { | |
5425 | if (SvMAGIC(sv) && (mg = mg_find(sv, how))) { | |
68795e93 NIS |
5426 | /* sv_magic() refuses to add a magic of the same 'how' as an |
5427 | existing one | |
92110913 NIS |
5428 | */ |
5429 | if (how == PERL_MAGIC_taint) | |
5430 | mg->mg_len |= 1; | |
5431 | return; | |
5432 | } | |
5433 | } | |
68795e93 | 5434 | |
79072805 | 5435 | switch (how) { |
14befaf4 | 5436 | case PERL_MAGIC_sv: |
92110913 | 5437 | vtable = &PL_vtbl_sv; |
79072805 | 5438 | break; |
14befaf4 | 5439 | case PERL_MAGIC_overload: |
92110913 | 5440 | vtable = &PL_vtbl_amagic; |
a0d0e21e | 5441 | break; |
14befaf4 | 5442 | case PERL_MAGIC_overload_elem: |
92110913 | 5443 | vtable = &PL_vtbl_amagicelem; |
a0d0e21e | 5444 | break; |
14befaf4 | 5445 | case PERL_MAGIC_overload_table: |
92110913 | 5446 | vtable = &PL_vtbl_ovrld; |
a0d0e21e | 5447 | break; |
14befaf4 | 5448 | case PERL_MAGIC_bm: |
92110913 | 5449 | vtable = &PL_vtbl_bm; |
79072805 | 5450 | break; |
14befaf4 | 5451 | case PERL_MAGIC_regdata: |
92110913 | 5452 | vtable = &PL_vtbl_regdata; |
6cef1e77 | 5453 | break; |
14befaf4 | 5454 | case PERL_MAGIC_regdatum: |
92110913 | 5455 | vtable = &PL_vtbl_regdatum; |
6cef1e77 | 5456 | break; |
14befaf4 | 5457 | case PERL_MAGIC_env: |
92110913 | 5458 | vtable = &PL_vtbl_env; |
79072805 | 5459 | break; |
14befaf4 | 5460 | case PERL_MAGIC_fm: |
92110913 | 5461 | vtable = &PL_vtbl_fm; |
55497cff | 5462 | break; |
14befaf4 | 5463 | case PERL_MAGIC_envelem: |
92110913 | 5464 | vtable = &PL_vtbl_envelem; |
79072805 | 5465 | break; |
14befaf4 | 5466 | case PERL_MAGIC_regex_global: |
92110913 | 5467 | vtable = &PL_vtbl_mglob; |
93a17b20 | 5468 | break; |
14befaf4 | 5469 | case PERL_MAGIC_isa: |
92110913 | 5470 | vtable = &PL_vtbl_isa; |
463ee0b2 | 5471 | break; |
14befaf4 | 5472 | case PERL_MAGIC_isaelem: |
92110913 | 5473 | vtable = &PL_vtbl_isaelem; |
463ee0b2 | 5474 | break; |
14befaf4 | 5475 | case PERL_MAGIC_nkeys: |
92110913 | 5476 | vtable = &PL_vtbl_nkeys; |
16660edb | 5477 | break; |
14befaf4 | 5478 | case PERL_MAGIC_dbfile: |
92110913 | 5479 | vtable = 0; |
93a17b20 | 5480 | break; |
14befaf4 | 5481 | case PERL_MAGIC_dbline: |
92110913 | 5482 | vtable = &PL_vtbl_dbline; |
79072805 | 5483 | break; |
36477c24 | 5484 | #ifdef USE_LOCALE_COLLATE |
14befaf4 | 5485 | case PERL_MAGIC_collxfrm: |
92110913 | 5486 | vtable = &PL_vtbl_collxfrm; |
bbce6d69 | 5487 | break; |
36477c24 | 5488 | #endif /* USE_LOCALE_COLLATE */ |
14befaf4 | 5489 | case PERL_MAGIC_tied: |
92110913 | 5490 | vtable = &PL_vtbl_pack; |
463ee0b2 | 5491 | break; |
14befaf4 DM |
5492 | case PERL_MAGIC_tiedelem: |
5493 | case PERL_MAGIC_tiedscalar: | |
92110913 | 5494 | vtable = &PL_vtbl_packelem; |
463ee0b2 | 5495 | break; |
14befaf4 | 5496 | case PERL_MAGIC_qr: |
92110913 | 5497 | vtable = &PL_vtbl_regexp; |
c277df42 | 5498 | break; |
14befaf4 | 5499 | case PERL_MAGIC_sig: |
92110913 | 5500 | vtable = &PL_vtbl_sig; |
79072805 | 5501 | break; |
14befaf4 | 5502 | case PERL_MAGIC_sigelem: |
92110913 | 5503 | vtable = &PL_vtbl_sigelem; |
79072805 | 5504 | break; |
14befaf4 | 5505 | case PERL_MAGIC_taint: |
92110913 | 5506 | vtable = &PL_vtbl_taint; |
463ee0b2 | 5507 | break; |
14befaf4 | 5508 | case PERL_MAGIC_uvar: |
92110913 | 5509 | vtable = &PL_vtbl_uvar; |
79072805 | 5510 | break; |
14befaf4 | 5511 | case PERL_MAGIC_vec: |
92110913 | 5512 | vtable = &PL_vtbl_vec; |
79072805 | 5513 | break; |
ece467f9 JP |
5514 | case PERL_MAGIC_vstring: |
5515 | vtable = 0; | |
5516 | break; | |
7e8c5dac HS |
5517 | case PERL_MAGIC_utf8: |
5518 | vtable = &PL_vtbl_utf8; | |
5519 | break; | |
14befaf4 | 5520 | case PERL_MAGIC_substr: |
92110913 | 5521 | vtable = &PL_vtbl_substr; |
79072805 | 5522 | break; |
14befaf4 | 5523 | case PERL_MAGIC_defelem: |
92110913 | 5524 | vtable = &PL_vtbl_defelem; |
5f05dabc | 5525 | break; |
14befaf4 | 5526 | case PERL_MAGIC_glob: |
92110913 | 5527 | vtable = &PL_vtbl_glob; |
79072805 | 5528 | break; |
14befaf4 | 5529 | case PERL_MAGIC_arylen: |
92110913 | 5530 | vtable = &PL_vtbl_arylen; |
79072805 | 5531 | break; |
14befaf4 | 5532 | case PERL_MAGIC_pos: |
92110913 | 5533 | vtable = &PL_vtbl_pos; |
a0d0e21e | 5534 | break; |
14befaf4 | 5535 | case PERL_MAGIC_backref: |
92110913 | 5536 | vtable = &PL_vtbl_backref; |
810b8aa5 | 5537 | break; |
14befaf4 DM |
5538 | case PERL_MAGIC_ext: |
5539 | /* Reserved for use by extensions not perl internals. */ | |
4633a7c4 LW |
5540 | /* Useful for attaching extension internal data to perl vars. */ |
5541 | /* Note that multiple extensions may clash if magical scalars */ | |
5542 | /* etc holding private data from one are passed to another. */ | |
a0d0e21e | 5543 | break; |
79072805 | 5544 | default: |
14befaf4 | 5545 | Perl_croak(aTHX_ "Don't know how to handle magic of type \\%o", how); |
463ee0b2 | 5546 | } |
68795e93 | 5547 | |
92110913 NIS |
5548 | /* Rest of work is done else where */ |
5549 | mg = sv_magicext(sv,obj,how,vtable,name,namlen); | |
68795e93 | 5550 | |
92110913 NIS |
5551 | switch (how) { |
5552 | case PERL_MAGIC_taint: | |
5553 | mg->mg_len = 1; | |
5554 | break; | |
5555 | case PERL_MAGIC_ext: | |
5556 | case PERL_MAGIC_dbfile: | |
5557 | SvRMAGICAL_on(sv); | |
5558 | break; | |
5559 | } | |
463ee0b2 LW |
5560 | } |
5561 | ||
c461cf8f JH |
5562 | /* |
5563 | =for apidoc sv_unmagic | |
5564 | ||
645c22ef | 5565 | Removes all magic of type C<type> from an SV. |
c461cf8f JH |
5566 | |
5567 | =cut | |
5568 | */ | |
5569 | ||
463ee0b2 | 5570 | int |
864dbfa3 | 5571 | Perl_sv_unmagic(pTHX_ SV *sv, int type) |
463ee0b2 LW |
5572 | { |
5573 | MAGIC* mg; | |
5574 | MAGIC** mgp; | |
91bba347 | 5575 | if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv)) |
463ee0b2 LW |
5576 | return 0; |
5577 | mgp = &SvMAGIC(sv); | |
5578 | for (mg = *mgp; mg; mg = *mgp) { | |
5579 | if (mg->mg_type == type) { | |
5580 | MGVTBL* vtbl = mg->mg_virtual; | |
5581 | *mgp = mg->mg_moremagic; | |
1d7c1841 | 5582 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 | 5583 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
14befaf4 | 5584 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
92110913 | 5585 | if (mg->mg_len > 0) |
1edc1566 | 5586 | Safefree(mg->mg_ptr); |
565764a8 | 5587 | else if (mg->mg_len == HEf_SVKEY) |
1edc1566 | 5588 | SvREFCNT_dec((SV*)mg->mg_ptr); |
7e8c5dac HS |
5589 | else if (mg->mg_type == PERL_MAGIC_utf8 && mg->mg_ptr) |
5590 | Safefree(mg->mg_ptr); | |
9cbac4c7 | 5591 | } |
a0d0e21e LW |
5592 | if (mg->mg_flags & MGf_REFCOUNTED) |
5593 | SvREFCNT_dec(mg->mg_obj); | |
463ee0b2 LW |
5594 | Safefree(mg); |
5595 | } | |
5596 | else | |
5597 | mgp = &mg->mg_moremagic; | |
79072805 | 5598 | } |
91bba347 | 5599 | if (!SvMAGIC(sv)) { |
463ee0b2 | 5600 | SvMAGICAL_off(sv); |
06759ea0 | 5601 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
463ee0b2 LW |
5602 | } |
5603 | ||
5604 | return 0; | |
79072805 LW |
5605 | } |
5606 | ||
c461cf8f JH |
5607 | /* |
5608 | =for apidoc sv_rvweaken | |
5609 | ||
645c22ef DM |
5610 | Weaken a reference: set the C<SvWEAKREF> flag on this RV; give the |
5611 | referred-to SV C<PERL_MAGIC_backref> magic if it hasn't already; and | |
5612 | push a back-reference to this RV onto the array of backreferences | |
5613 | associated with that magic. | |
c461cf8f JH |
5614 | |
5615 | =cut | |
5616 | */ | |
5617 | ||
810b8aa5 | 5618 | SV * |
864dbfa3 | 5619 | Perl_sv_rvweaken(pTHX_ SV *sv) |
810b8aa5 GS |
5620 | { |
5621 | SV *tsv; | |
5622 | if (!SvOK(sv)) /* let undefs pass */ | |
5623 | return sv; | |
5624 | if (!SvROK(sv)) | |
cea2e8a9 | 5625 | Perl_croak(aTHX_ "Can't weaken a nonreference"); |
810b8aa5 | 5626 | else if (SvWEAKREF(sv)) { |
810b8aa5 | 5627 | if (ckWARN(WARN_MISC)) |
9014280d | 5628 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Reference is already weak"); |
810b8aa5 GS |
5629 | return sv; |
5630 | } | |
5631 | tsv = SvRV(sv); | |
5632 | sv_add_backref(tsv, sv); | |
5633 | SvWEAKREF_on(sv); | |
1c846c1f | 5634 | SvREFCNT_dec(tsv); |
810b8aa5 GS |
5635 | return sv; |
5636 | } | |
5637 | ||
645c22ef DM |
5638 | /* Give tsv backref magic if it hasn't already got it, then push a |
5639 | * back-reference to sv onto the array associated with the backref magic. | |
5640 | */ | |
5641 | ||
810b8aa5 | 5642 | STATIC void |
cea2e8a9 | 5643 | S_sv_add_backref(pTHX_ SV *tsv, SV *sv) |
810b8aa5 GS |
5644 | { |
5645 | AV *av; | |
5646 | MAGIC *mg; | |
14befaf4 | 5647 | if (SvMAGICAL(tsv) && (mg = mg_find(tsv, PERL_MAGIC_backref))) |
810b8aa5 GS |
5648 | av = (AV*)mg->mg_obj; |
5649 | else { | |
5650 | av = newAV(); | |
14befaf4 | 5651 | sv_magic(tsv, (SV*)av, PERL_MAGIC_backref, NULL, 0); |
d99b02a1 DM |
5652 | /* av now has a refcnt of 2, which avoids it getting freed |
5653 | * before us during global cleanup. The extra ref is removed | |
5654 | * by magic_killbackrefs() when tsv is being freed */ | |
810b8aa5 | 5655 | } |
d91d49e8 | 5656 | if (AvFILLp(av) >= AvMAX(av)) { |
fdc9a813 | 5657 | I32 i; |
d91d49e8 | 5658 | SV **svp = AvARRAY(av); |
fdc9a813 AE |
5659 | for (i = AvFILLp(av); i >= 0; i--) |
5660 | if (!svp[i]) { | |
d91d49e8 MM |
5661 | svp[i] = sv; /* reuse the slot */ |
5662 | return; | |
5663 | } | |
d91d49e8 MM |
5664 | av_extend(av, AvFILLp(av)+1); |
5665 | } | |
5666 | AvARRAY(av)[++AvFILLp(av)] = sv; /* av_push() */ | |
810b8aa5 GS |
5667 | } |
5668 | ||
645c22ef DM |
5669 | /* delete a back-reference to ourselves from the backref magic associated |
5670 | * with the SV we point to. | |
5671 | */ | |
5672 | ||
1c846c1f | 5673 | STATIC void |
cea2e8a9 | 5674 | S_sv_del_backref(pTHX_ SV *sv) |
810b8aa5 GS |
5675 | { |
5676 | AV *av; | |
5677 | SV **svp; | |
5678 | I32 i; | |
5679 | SV *tsv = SvRV(sv); | |
c04a4dfe | 5680 | MAGIC *mg = NULL; |
14befaf4 | 5681 | if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, PERL_MAGIC_backref))) |
cea2e8a9 | 5682 | Perl_croak(aTHX_ "panic: del_backref"); |
810b8aa5 GS |
5683 | av = (AV *)mg->mg_obj; |
5684 | svp = AvARRAY(av); | |
fdc9a813 AE |
5685 | for (i = AvFILLp(av); i >= 0; i--) |
5686 | if (svp[i] == sv) svp[i] = Nullsv; | |
810b8aa5 GS |
5687 | } |
5688 | ||
954c1994 GS |
5689 | /* |
5690 | =for apidoc sv_insert | |
5691 | ||
5692 | Inserts a string at the specified offset/length within the SV. Similar to | |
5693 | the Perl substr() function. | |
5694 | ||
5695 | =cut | |
5696 | */ | |
5697 | ||
79072805 | 5698 | void |
864dbfa3 | 5699 | Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen) |
79072805 LW |
5700 | { |
5701 | register char *big; | |
5702 | register char *mid; | |
5703 | register char *midend; | |
5704 | register char *bigend; | |
5705 | register I32 i; | |
6ff81951 | 5706 | STRLEN curlen; |
1c846c1f | 5707 | |
79072805 | 5708 | |
8990e307 | 5709 | if (!bigstr) |
cea2e8a9 | 5710 | Perl_croak(aTHX_ "Can't modify non-existent substring"); |
6ff81951 | 5711 | SvPV_force(bigstr, curlen); |
60fa28ff | 5712 | (void)SvPOK_only_UTF8(bigstr); |
6ff81951 GS |
5713 | if (offset + len > curlen) { |
5714 | SvGROW(bigstr, offset+len+1); | |
5715 | Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char); | |
5716 | SvCUR_set(bigstr, offset+len); | |
5717 | } | |
79072805 | 5718 | |
69b47968 | 5719 | SvTAINT(bigstr); |
79072805 LW |
5720 | i = littlelen - len; |
5721 | if (i > 0) { /* string might grow */ | |
a0d0e21e | 5722 | big = SvGROW(bigstr, SvCUR(bigstr) + i + 1); |
79072805 LW |
5723 | mid = big + offset + len; |
5724 | midend = bigend = big + SvCUR(bigstr); | |
5725 | bigend += i; | |
5726 | *bigend = '\0'; | |
5727 | while (midend > mid) /* shove everything down */ | |
5728 | *--bigend = *--midend; | |
5729 | Move(little,big+offset,littlelen,char); | |
5730 | SvCUR(bigstr) += i; | |
5731 | SvSETMAGIC(bigstr); | |
5732 | return; | |
5733 | } | |
5734 | else if (i == 0) { | |
463ee0b2 | 5735 | Move(little,SvPVX(bigstr)+offset,len,char); |
79072805 LW |
5736 | SvSETMAGIC(bigstr); |
5737 | return; | |
5738 | } | |
5739 | ||
463ee0b2 | 5740 | big = SvPVX(bigstr); |
79072805 LW |
5741 | mid = big + offset; |
5742 | midend = mid + len; | |
5743 | bigend = big + SvCUR(bigstr); | |
5744 | ||
5745 | if (midend > bigend) | |
cea2e8a9 | 5746 | Perl_croak(aTHX_ "panic: sv_insert"); |
79072805 LW |
5747 | |
5748 | if (mid - big > bigend - midend) { /* faster to shorten from end */ | |
5749 | if (littlelen) { | |
5750 | Move(little, mid, littlelen,char); | |
5751 | mid += littlelen; | |
5752 | } | |
5753 | i = bigend - midend; | |
5754 | if (i > 0) { | |
5755 | Move(midend, mid, i,char); | |
5756 | mid += i; | |
5757 | } | |
5758 | *mid = '\0'; | |
5759 | SvCUR_set(bigstr, mid - big); | |
5760 | } | |
5761 | /*SUPPRESS 560*/ | |
155aba94 | 5762 | else if ((i = mid - big)) { /* faster from front */ |
79072805 LW |
5763 | midend -= littlelen; |
5764 | mid = midend; | |
5765 | sv_chop(bigstr,midend-i); | |
5766 | big += i; | |
5767 | while (i--) | |
5768 | *--midend = *--big; | |
5769 | if (littlelen) | |
5770 | Move(little, mid, littlelen,char); | |
5771 | } | |
5772 | else if (littlelen) { | |
5773 | midend -= littlelen; | |
5774 | sv_chop(bigstr,midend); | |
5775 | Move(little,midend,littlelen,char); | |
5776 | } | |
5777 | else { | |
5778 | sv_chop(bigstr,midend); | |
5779 | } | |
5780 | SvSETMAGIC(bigstr); | |
5781 | } | |
5782 | ||
c461cf8f JH |
5783 | /* |
5784 | =for apidoc sv_replace | |
5785 | ||
5786 | Make the first argument a copy of the second, then delete the original. | |
645c22ef DM |
5787 | The target SV physically takes over ownership of the body of the source SV |
5788 | and inherits its flags; however, the target keeps any magic it owns, | |
5789 | and any magic in the source is discarded. | |
ff276b08 | 5790 | Note that this is a rather specialist SV copying operation; most of the |
645c22ef | 5791 | time you'll want to use C<sv_setsv> or one of its many macro front-ends. |
c461cf8f JH |
5792 | |
5793 | =cut | |
5794 | */ | |
79072805 LW |
5795 | |
5796 | void | |
864dbfa3 | 5797 | Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv) |
79072805 LW |
5798 | { |
5799 | U32 refcnt = SvREFCNT(sv); | |
765f542d | 5800 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
0453d815 | 5801 | if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL)) |
9014280d | 5802 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "Reference miscount in sv_replace()"); |
93a17b20 | 5803 | if (SvMAGICAL(sv)) { |
a0d0e21e LW |
5804 | if (SvMAGICAL(nsv)) |
5805 | mg_free(nsv); | |
5806 | else | |
5807 | sv_upgrade(nsv, SVt_PVMG); | |
93a17b20 | 5808 | SvMAGIC(nsv) = SvMAGIC(sv); |
a0d0e21e | 5809 | SvFLAGS(nsv) |= SvMAGICAL(sv); |
93a17b20 LW |
5810 | SvMAGICAL_off(sv); |
5811 | SvMAGIC(sv) = 0; | |
5812 | } | |
79072805 LW |
5813 | SvREFCNT(sv) = 0; |
5814 | sv_clear(sv); | |
477f5d66 | 5815 | assert(!SvREFCNT(sv)); |
79072805 | 5816 | StructCopy(nsv,sv,SV); |
d3d0e6f1 NC |
5817 | #ifdef PERL_COPY_ON_WRITE |
5818 | if (SvIsCOW_normal(nsv)) { | |
5819 | /* We need to follow the pointers around the loop to make the | |
5820 | previous SV point to sv, rather than nsv. */ | |
5821 | SV *next; | |
5822 | SV *current = nsv; | |
5823 | while ((next = SV_COW_NEXT_SV(current)) != nsv) { | |
5824 | assert(next); | |
5825 | current = next; | |
5826 | assert(SvPVX(current) == SvPVX(nsv)); | |
5827 | } | |
5828 | /* Make the SV before us point to the SV after us. */ | |
5829 | if (DEBUG_C_TEST) { | |
5830 | PerlIO_printf(Perl_debug_log, "previous is\n"); | |
5831 | sv_dump(current); | |
a29f6d03 NC |
5832 | PerlIO_printf(Perl_debug_log, |
5833 | "move it from 0x%"UVxf" to 0x%"UVxf"\n", | |
d3d0e6f1 NC |
5834 | (UV) SV_COW_NEXT_SV(current), (UV) sv); |
5835 | } | |
a29f6d03 | 5836 | SV_COW_NEXT_SV_SET(current, sv); |
d3d0e6f1 NC |
5837 | } |
5838 | #endif | |
79072805 | 5839 | SvREFCNT(sv) = refcnt; |
1edc1566 | 5840 | SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */ |
39cf41c2 | 5841 | SvREFCNT(nsv) = 0; |
463ee0b2 | 5842 | del_SV(nsv); |
79072805 LW |
5843 | } |
5844 | ||
c461cf8f JH |
5845 | /* |
5846 | =for apidoc sv_clear | |
5847 | ||
645c22ef DM |
5848 | Clear an SV: call any destructors, free up any memory used by the body, |
5849 | and free the body itself. The SV's head is I<not> freed, although | |
5850 | its type is set to all 1's so that it won't inadvertently be assumed | |
5851 | to be live during global destruction etc. | |
5852 | This function should only be called when REFCNT is zero. Most of the time | |
5853 | you'll want to call C<sv_free()> (or its macro wrapper C<SvREFCNT_dec>) | |
5854 | instead. | |
c461cf8f JH |
5855 | |
5856 | =cut | |
5857 | */ | |
5858 | ||
79072805 | 5859 | void |
864dbfa3 | 5860 | Perl_sv_clear(pTHX_ register SV *sv) |
79072805 | 5861 | { |
ec12f114 | 5862 | HV* stash; |
79072805 LW |
5863 | assert(sv); |
5864 | assert(SvREFCNT(sv) == 0); | |
5865 | ||
ed6116ce | 5866 | if (SvOBJECT(sv)) { |
3280af22 | 5867 | if (PL_defstash) { /* Still have a symbol table? */ |
39644a26 | 5868 | dSP; |
32251b26 | 5869 | CV* destructor; |
a0d0e21e | 5870 | |
5cc433a6 | 5871 | |
8ebc5c01 | 5872 | |
d460ef45 | 5873 | do { |
4e8e7886 | 5874 | stash = SvSTASH(sv); |
32251b26 | 5875 | destructor = StashHANDLER(stash,DESTROY); |
4e8e7886 | 5876 | if (destructor) { |
5cc433a6 AB |
5877 | SV* tmpref = newRV(sv); |
5878 | SvREADONLY_on(tmpref); /* DESTROY() could be naughty */ | |
4e8e7886 | 5879 | ENTER; |
e788e7d3 | 5880 | PUSHSTACKi(PERLSI_DESTROY); |
4e8e7886 GS |
5881 | EXTEND(SP, 2); |
5882 | PUSHMARK(SP); | |
5cc433a6 | 5883 | PUSHs(tmpref); |
4e8e7886 | 5884 | PUTBACK; |
44389ee9 | 5885 | call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR|G_VOID); |
5cc433a6 AB |
5886 | |
5887 | ||
d3acc0f7 | 5888 | POPSTACK; |
3095d977 | 5889 | SPAGAIN; |
4e8e7886 | 5890 | LEAVE; |
5cc433a6 AB |
5891 | if(SvREFCNT(tmpref) < 2) { |
5892 | /* tmpref is not kept alive! */ | |
5893 | SvREFCNT(sv)--; | |
5894 | SvRV(tmpref) = 0; | |
5895 | SvROK_off(tmpref); | |
5896 | } | |
5897 | SvREFCNT_dec(tmpref); | |
4e8e7886 GS |
5898 | } |
5899 | } while (SvOBJECT(sv) && SvSTASH(sv) != stash); | |
8ebc5c01 | 5900 | |
6f44e0a4 JP |
5901 | |
5902 | if (SvREFCNT(sv)) { | |
5903 | if (PL_in_clean_objs) | |
cea2e8a9 | 5904 | Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'", |
6f44e0a4 JP |
5905 | HvNAME(stash)); |
5906 | /* DESTROY gave object new lease on life */ | |
5907 | return; | |
5908 | } | |
a0d0e21e | 5909 | } |
4e8e7886 | 5910 | |
a0d0e21e | 5911 | if (SvOBJECT(sv)) { |
4e8e7886 | 5912 | SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */ |
a0d0e21e LW |
5913 | SvOBJECT_off(sv); /* Curse the object. */ |
5914 | if (SvTYPE(sv) != SVt_PVIO) | |
3280af22 | 5915 | --PL_sv_objcount; /* XXX Might want something more general */ |
a0d0e21e | 5916 | } |
463ee0b2 | 5917 | } |
524189f1 JH |
5918 | if (SvTYPE(sv) >= SVt_PVMG) { |
5919 | if (SvMAGIC(sv)) | |
5920 | mg_free(sv); | |
5921 | if (SvFLAGS(sv) & SVpad_TYPED) | |
5922 | SvREFCNT_dec(SvSTASH(sv)); | |
5923 | } | |
ec12f114 | 5924 | stash = NULL; |
79072805 | 5925 | switch (SvTYPE(sv)) { |
8990e307 | 5926 | case SVt_PVIO: |
df0bd2f4 GS |
5927 | if (IoIFP(sv) && |
5928 | IoIFP(sv) != PerlIO_stdin() && | |
5f05dabc | 5929 | IoIFP(sv) != PerlIO_stdout() && |
5930 | IoIFP(sv) != PerlIO_stderr()) | |
93578b34 | 5931 | { |
f2b5be74 | 5932 | io_close((IO*)sv, FALSE); |
93578b34 | 5933 | } |
1d7c1841 | 5934 | if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP)) |
1236053a | 5935 | PerlDir_close(IoDIRP(sv)); |
1d7c1841 | 5936 | IoDIRP(sv) = (DIR*)NULL; |
8990e307 LW |
5937 | Safefree(IoTOP_NAME(sv)); |
5938 | Safefree(IoFMT_NAME(sv)); | |
5939 | Safefree(IoBOTTOM_NAME(sv)); | |
a0d0e21e | 5940 | /* FALL THROUGH */ |
79072805 | 5941 | case SVt_PVBM: |
a0d0e21e | 5942 | goto freescalar; |
79072805 | 5943 | case SVt_PVCV: |
748a9306 | 5944 | case SVt_PVFM: |
85e6fe83 | 5945 | cv_undef((CV*)sv); |
a0d0e21e | 5946 | goto freescalar; |
79072805 | 5947 | case SVt_PVHV: |
85e6fe83 | 5948 | hv_undef((HV*)sv); |
a0d0e21e | 5949 | break; |
79072805 | 5950 | case SVt_PVAV: |
85e6fe83 | 5951 | av_undef((AV*)sv); |
a0d0e21e | 5952 | break; |
02270b4e | 5953 | case SVt_PVLV: |
dd28f7bb DM |
5954 | if (LvTYPE(sv) == 'T') { /* for tie: return HE to pool */ |
5955 | SvREFCNT_dec(HeKEY_sv((HE*)LvTARG(sv))); | |
5956 | HeNEXT((HE*)LvTARG(sv)) = PL_hv_fetch_ent_mh; | |
5957 | PL_hv_fetch_ent_mh = (HE*)LvTARG(sv); | |
5958 | } | |
5959 | else if (LvTYPE(sv) != 't') /* unless tie: unrefcnted fake SV** */ | |
5960 | SvREFCNT_dec(LvTARG(sv)); | |
02270b4e | 5961 | goto freescalar; |
a0d0e21e | 5962 | case SVt_PVGV: |
1edc1566 | 5963 | gp_free((GV*)sv); |
a0d0e21e | 5964 | Safefree(GvNAME(sv)); |
ec12f114 JPC |
5965 | /* cannot decrease stash refcount yet, as we might recursively delete |
5966 | ourselves when the refcnt drops to zero. Delay SvREFCNT_dec | |
5967 | of stash until current sv is completely gone. | |
5968 | -- JohnPC, 27 Mar 1998 */ | |
5969 | stash = GvSTASH(sv); | |
a0d0e21e | 5970 | /* FALL THROUGH */ |
79072805 | 5971 | case SVt_PVMG: |
79072805 LW |
5972 | case SVt_PVNV: |
5973 | case SVt_PVIV: | |
a0d0e21e LW |
5974 | freescalar: |
5975 | (void)SvOOK_off(sv); | |
79072805 LW |
5976 | /* FALL THROUGH */ |
5977 | case SVt_PV: | |
a0d0e21e | 5978 | case SVt_RV: |
810b8aa5 GS |
5979 | if (SvROK(sv)) { |
5980 | if (SvWEAKREF(sv)) | |
5981 | sv_del_backref(sv); | |
5982 | else | |
5983 | SvREFCNT_dec(SvRV(sv)); | |
5984 | } | |
765f542d NC |
5985 | #ifdef PERL_COPY_ON_WRITE |
5986 | else if (SvPVX(sv)) { | |
5987 | if (SvIsCOW(sv)) { | |
5988 | /* I believe I need to grab the global SV mutex here and | |
5989 | then recheck the COW status. */ | |
46187eeb NC |
5990 | if (DEBUG_C_TEST) { |
5991 | PerlIO_printf(Perl_debug_log, "Copy on write: clear\n"); | |
e419cbc5 | 5992 | sv_dump(sv); |
46187eeb | 5993 | } |
e419cbc5 | 5994 | sv_release_COW(sv, SvPVX(sv), SvCUR(sv), SvLEN(sv), |
765f542d NC |
5995 | SvUVX(sv), SV_COW_NEXT_SV(sv)); |
5996 | /* And drop it here. */ | |
5997 | SvFAKE_off(sv); | |
5998 | } else if (SvLEN(sv)) { | |
5999 | Safefree(SvPVX(sv)); | |
6000 | } | |
6001 | } | |
6002 | #else | |
1edc1566 | 6003 | else if (SvPVX(sv) && SvLEN(sv)) |
463ee0b2 | 6004 | Safefree(SvPVX(sv)); |
1c846c1f | 6005 | else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) { |
25716404 GS |
6006 | unsharepvn(SvPVX(sv), |
6007 | SvUTF8(sv) ? -(I32)SvCUR(sv) : SvCUR(sv), | |
6008 | SvUVX(sv)); | |
1c846c1f NIS |
6009 | SvFAKE_off(sv); |
6010 | } | |
765f542d | 6011 | #endif |
79072805 | 6012 | break; |
a0d0e21e | 6013 | /* |
79072805 | 6014 | case SVt_NV: |
79072805 | 6015 | case SVt_IV: |
79072805 LW |
6016 | case SVt_NULL: |
6017 | break; | |
a0d0e21e | 6018 | */ |
79072805 LW |
6019 | } |
6020 | ||
6021 | switch (SvTYPE(sv)) { | |
6022 | case SVt_NULL: | |
6023 | break; | |
79072805 LW |
6024 | case SVt_IV: |
6025 | del_XIV(SvANY(sv)); | |
6026 | break; | |
6027 | case SVt_NV: | |
6028 | del_XNV(SvANY(sv)); | |
6029 | break; | |
ed6116ce LW |
6030 | case SVt_RV: |
6031 | del_XRV(SvANY(sv)); | |
6032 | break; | |
79072805 LW |
6033 | case SVt_PV: |
6034 | del_XPV(SvANY(sv)); | |
6035 | break; | |
6036 | case SVt_PVIV: | |
6037 | del_XPVIV(SvANY(sv)); | |
6038 | break; | |
6039 | case SVt_PVNV: | |
6040 | del_XPVNV(SvANY(sv)); | |
6041 | break; | |
6042 | case SVt_PVMG: | |
6043 | del_XPVMG(SvANY(sv)); | |
6044 | break; | |
6045 | case SVt_PVLV: | |
6046 | del_XPVLV(SvANY(sv)); | |
6047 | break; | |
6048 | case SVt_PVAV: | |
6049 | del_XPVAV(SvANY(sv)); | |
6050 | break; | |
6051 | case SVt_PVHV: | |
6052 | del_XPVHV(SvANY(sv)); | |
6053 | break; | |
6054 | case SVt_PVCV: | |
6055 | del_XPVCV(SvANY(sv)); | |
6056 | break; | |
6057 | case SVt_PVGV: | |
6058 | del_XPVGV(SvANY(sv)); | |
ec12f114 JPC |
6059 | /* code duplication for increased performance. */ |
6060 | SvFLAGS(sv) &= SVf_BREAK; | |
6061 | SvFLAGS(sv) |= SVTYPEMASK; | |
6062 | /* decrease refcount of the stash that owns this GV, if any */ | |
6063 | if (stash) | |
6064 | SvREFCNT_dec(stash); | |
6065 | return; /* not break, SvFLAGS reset already happened */ | |
79072805 LW |
6066 | case SVt_PVBM: |
6067 | del_XPVBM(SvANY(sv)); | |
6068 | break; | |
6069 | case SVt_PVFM: | |
6070 | del_XPVFM(SvANY(sv)); | |
6071 | break; | |
8990e307 LW |
6072 | case SVt_PVIO: |
6073 | del_XPVIO(SvANY(sv)); | |
6074 | break; | |
79072805 | 6075 | } |
a0d0e21e | 6076 | SvFLAGS(sv) &= SVf_BREAK; |
8990e307 | 6077 | SvFLAGS(sv) |= SVTYPEMASK; |
79072805 LW |
6078 | } |
6079 | ||
645c22ef DM |
6080 | /* |
6081 | =for apidoc sv_newref | |
6082 | ||
6083 | Increment an SV's reference count. Use the C<SvREFCNT_inc()> wrapper | |
6084 | instead. | |
6085 | ||
6086 | =cut | |
6087 | */ | |
6088 | ||
79072805 | 6089 | SV * |
864dbfa3 | 6090 | Perl_sv_newref(pTHX_ SV *sv) |
79072805 | 6091 | { |
463ee0b2 | 6092 | if (sv) |
4db098f4 | 6093 | (SvREFCNT(sv))++; |
79072805 LW |
6094 | return sv; |
6095 | } | |
6096 | ||
c461cf8f JH |
6097 | /* |
6098 | =for apidoc sv_free | |
6099 | ||
645c22ef DM |
6100 | Decrement an SV's reference count, and if it drops to zero, call |
6101 | C<sv_clear> to invoke destructors and free up any memory used by | |
6102 | the body; finally, deallocate the SV's head itself. | |
6103 | Normally called via a wrapper macro C<SvREFCNT_dec>. | |
c461cf8f JH |
6104 | |
6105 | =cut | |
6106 | */ | |
6107 | ||
79072805 | 6108 | void |
864dbfa3 | 6109 | Perl_sv_free(pTHX_ SV *sv) |
79072805 LW |
6110 | { |
6111 | if (!sv) | |
6112 | return; | |
a0d0e21e LW |
6113 | if (SvREFCNT(sv) == 0) { |
6114 | if (SvFLAGS(sv) & SVf_BREAK) | |
645c22ef DM |
6115 | /* this SV's refcnt has been artificially decremented to |
6116 | * trigger cleanup */ | |
a0d0e21e | 6117 | return; |
3280af22 | 6118 | if (PL_in_clean_all) /* All is fair */ |
1edc1566 | 6119 | return; |
d689ffdd JP |
6120 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
6121 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
6122 | SvREFCNT(sv) = (~(U32)0)/2; | |
6123 | return; | |
6124 | } | |
0453d815 | 6125 | if (ckWARN_d(WARN_INTERNAL)) |
d5dede04 | 6126 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
472d47bc SB |
6127 | "Attempt to free unreferenced scalar: SV 0x%"UVxf |
6128 | pTHX__FORMAT, PTR2UV(sv) pTHX__VALUE); | |
79072805 LW |
6129 | return; |
6130 | } | |
4db098f4 | 6131 | if (--(SvREFCNT(sv)) > 0) |
8990e307 | 6132 | return; |
8c4d3c90 NC |
6133 | Perl_sv_free2(aTHX_ sv); |
6134 | } | |
6135 | ||
6136 | void | |
6137 | Perl_sv_free2(pTHX_ SV *sv) | |
6138 | { | |
463ee0b2 LW |
6139 | #ifdef DEBUGGING |
6140 | if (SvTEMP(sv)) { | |
0453d815 | 6141 | if (ckWARN_d(WARN_DEBUGGING)) |
9014280d | 6142 | Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), |
472d47bc SB |
6143 | "Attempt to free temp prematurely: SV 0x%"UVxf |
6144 | pTHX__FORMAT, PTR2UV(sv) pTHX__VALUE); | |
79072805 | 6145 | return; |
79072805 | 6146 | } |
463ee0b2 | 6147 | #endif |
d689ffdd JP |
6148 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
6149 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
6150 | SvREFCNT(sv) = (~(U32)0)/2; | |
6151 | return; | |
6152 | } | |
79072805 | 6153 | sv_clear(sv); |
477f5d66 CS |
6154 | if (! SvREFCNT(sv)) |
6155 | del_SV(sv); | |
79072805 LW |
6156 | } |
6157 | ||
954c1994 GS |
6158 | /* |
6159 | =for apidoc sv_len | |
6160 | ||
645c22ef DM |
6161 | Returns the length of the string in the SV. Handles magic and type |
6162 | coercion. See also C<SvCUR>, which gives raw access to the xpv_cur slot. | |
954c1994 GS |
6163 | |
6164 | =cut | |
6165 | */ | |
6166 | ||
79072805 | 6167 | STRLEN |
864dbfa3 | 6168 | Perl_sv_len(pTHX_ register SV *sv) |
79072805 | 6169 | { |
463ee0b2 | 6170 | STRLEN len; |
79072805 LW |
6171 | |
6172 | if (!sv) | |
6173 | return 0; | |
6174 | ||
8990e307 | 6175 | if (SvGMAGICAL(sv)) |
565764a8 | 6176 | len = mg_length(sv); |
8990e307 | 6177 | else |
497b47a8 | 6178 | (void)SvPV(sv, len); |
463ee0b2 | 6179 | return len; |
79072805 LW |
6180 | } |
6181 | ||
c461cf8f JH |
6182 | /* |
6183 | =for apidoc sv_len_utf8 | |
6184 | ||
6185 | Returns the number of characters in the string in an SV, counting wide | |
1e54db1a | 6186 | UTF-8 bytes as a single character. Handles magic and type coercion. |
c461cf8f JH |
6187 | |
6188 | =cut | |
6189 | */ | |
6190 | ||
7e8c5dac HS |
6191 | /* |
6192 | * The length is cached in PERL_UTF8_magic, in the mg_len field. Also the | |
6193 | * mg_ptr is used, by sv_pos_u2b(), see the comments of S_utf8_mg_pos_init(). | |
6194 | * (Note that the mg_len is not the length of the mg_ptr field.) | |
6195 | * | |
6196 | */ | |
6197 | ||
a0ed51b3 | 6198 | STRLEN |
864dbfa3 | 6199 | Perl_sv_len_utf8(pTHX_ register SV *sv) |
a0ed51b3 | 6200 | { |
a0ed51b3 LW |
6201 | if (!sv) |
6202 | return 0; | |
6203 | ||
a0ed51b3 | 6204 | if (SvGMAGICAL(sv)) |
b76347f2 | 6205 | return mg_length(sv); |
a0ed51b3 | 6206 | else |
b76347f2 | 6207 | { |
7e8c5dac | 6208 | STRLEN len, ulen; |
b76347f2 | 6209 | U8 *s = (U8*)SvPV(sv, len); |
7e8c5dac HS |
6210 | MAGIC *mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_utf8) : 0; |
6211 | ||
e23c8137 | 6212 | if (mg && mg->mg_len != -1 && (mg->mg_len > 0 || len == 0)) { |
7e8c5dac | 6213 | ulen = mg->mg_len; |
e23c8137 JH |
6214 | #ifdef PERL_UTF8_CACHE_ASSERT |
6215 | assert(ulen == Perl_utf8_length(aTHX_ s, s + len)); | |
6216 | #endif | |
6217 | } | |
7e8c5dac HS |
6218 | else { |
6219 | ulen = Perl_utf8_length(aTHX_ s, s + len); | |
6220 | if (!mg && !SvREADONLY(sv)) { | |
6221 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
6222 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
6223 | assert(mg); | |
6224 | } | |
6225 | if (mg) | |
6226 | mg->mg_len = ulen; | |
6227 | } | |
6228 | return ulen; | |
6229 | } | |
6230 | } | |
6231 | ||
6232 | /* S_utf8_mg_pos_init() is used to initialize the mg_ptr field of | |
6233 | * a PERL_UTF8_magic. The mg_ptr is used to store the mapping | |
6234 | * between UTF-8 and byte offsets. There are two (substr offset and substr | |
6235 | * length, the i offset, PERL_MAGIC_UTF8_CACHESIZE) times two (UTF-8 offset | |
6236 | * and byte offset) cache positions. | |
6237 | * | |
6238 | * The mg_len field is used by sv_len_utf8(), see its comments. | |
6239 | * Note that the mg_len is not the length of the mg_ptr field. | |
6240 | * | |
6241 | */ | |
6242 | STATIC bool | |
6e551876 | 6243 | S_utf8_mg_pos_init(pTHX_ SV *sv, MAGIC **mgp, STRLEN **cachep, I32 i, I32 *offsetp, U8 *s, U8 *start) |
7e8c5dac HS |
6244 | { |
6245 | bool found = FALSE; | |
6246 | ||
6247 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
8f78557a AE |
6248 | if (!*mgp) |
6249 | *mgp = sv_magicext(sv, 0, PERL_MAGIC_utf8, &PL_vtbl_utf8, 0, 0); | |
7e8c5dac | 6250 | assert(*mgp); |
b76347f2 | 6251 | |
7e8c5dac HS |
6252 | if ((*mgp)->mg_ptr) |
6253 | *cachep = (STRLEN *) (*mgp)->mg_ptr; | |
6254 | else { | |
6255 | Newz(0, *cachep, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); | |
6256 | (*mgp)->mg_ptr = (char *) *cachep; | |
6257 | } | |
6258 | assert(*cachep); | |
6259 | ||
6260 | (*cachep)[i] = *offsetp; | |
6261 | (*cachep)[i+1] = s - start; | |
6262 | found = TRUE; | |
a0ed51b3 | 6263 | } |
7e8c5dac HS |
6264 | |
6265 | return found; | |
a0ed51b3 LW |
6266 | } |
6267 | ||
645c22ef | 6268 | /* |
7e8c5dac HS |
6269 | * S_utf8_mg_pos() is used to query and update mg_ptr field of |
6270 | * a PERL_UTF8_magic. The mg_ptr is used to store the mapping | |
6271 | * between UTF-8 and byte offsets. See also the comments of | |
6272 | * S_utf8_mg_pos_init(). | |
6273 | * | |
6274 | */ | |
6275 | STATIC bool | |
6e551876 | 6276 | S_utf8_mg_pos(pTHX_ SV *sv, MAGIC **mgp, STRLEN **cachep, I32 i, I32 *offsetp, I32 uoff, U8 **sp, U8 *start, U8 *send) |
7e8c5dac HS |
6277 | { |
6278 | bool found = FALSE; | |
6279 | ||
6280 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
6281 | if (!*mgp) | |
6282 | *mgp = mg_find(sv, PERL_MAGIC_utf8); | |
6283 | if (*mgp && (*mgp)->mg_ptr) { | |
6284 | *cachep = (STRLEN *) (*mgp)->mg_ptr; | |
e23c8137 | 6285 | ASSERT_UTF8_CACHE(*cachep); |
667208dd | 6286 | if ((*cachep)[i] == (STRLEN)uoff) /* An exact match. */ |
e23c8137 | 6287 | found = TRUE; |
7e8c5dac HS |
6288 | else { /* We will skip to the right spot. */ |
6289 | STRLEN forw = 0; | |
6290 | STRLEN backw = 0; | |
6291 | U8* p = NULL; | |
6292 | ||
6293 | /* The assumption is that going backward is half | |
6294 | * the speed of going forward (that's where the | |
6295 | * 2 * backw in the below comes from). (The real | |
6296 | * figure of course depends on the UTF-8 data.) */ | |
6297 | ||
667208dd | 6298 | if ((*cachep)[i] > (STRLEN)uoff) { |
7e8c5dac | 6299 | forw = uoff; |
667208dd | 6300 | backw = (*cachep)[i] - (STRLEN)uoff; |
7e8c5dac HS |
6301 | |
6302 | if (forw < 2 * backw) | |
6303 | p = start; | |
6304 | else | |
6305 | p = start + (*cachep)[i+1]; | |
6306 | } | |
6307 | /* Try this only for the substr offset (i == 0), | |
6308 | * not for the substr length (i == 2). */ | |
6309 | else if (i == 0) { /* (*cachep)[i] < uoff */ | |
6310 | STRLEN ulen = sv_len_utf8(sv); | |
6311 | ||
667208dd JH |
6312 | if ((STRLEN)uoff < ulen) { |
6313 | forw = (STRLEN)uoff - (*cachep)[i]; | |
6314 | backw = ulen - (STRLEN)uoff; | |
7e8c5dac HS |
6315 | |
6316 | if (forw < 2 * backw) | |
6317 | p = start + (*cachep)[i+1]; | |
6318 | else | |
6319 | p = send; | |
6320 | } | |
6321 | ||
6322 | /* If the string is not long enough for uoff, | |
6323 | * we could extend it, but not at this low a level. */ | |
6324 | } | |
6325 | ||
6326 | if (p) { | |
6327 | if (forw < 2 * backw) { | |
6328 | while (forw--) | |
6329 | p += UTF8SKIP(p); | |
6330 | } | |
6331 | else { | |
6332 | while (backw--) { | |
6333 | p--; | |
6334 | while (UTF8_IS_CONTINUATION(*p)) | |
6335 | p--; | |
6336 | } | |
6337 | } | |
6338 | ||
6339 | /* Update the cache. */ | |
667208dd | 6340 | (*cachep)[i] = (STRLEN)uoff; |
7e8c5dac | 6341 | (*cachep)[i+1] = p - start; |
8f78557a AE |
6342 | |
6343 | /* Drop the stale "length" cache */ | |
6344 | if (i == 0) { | |
6345 | (*cachep)[2] = 0; | |
6346 | (*cachep)[3] = 0; | |
6347 | } | |
7e8c5dac HS |
6348 | |
6349 | found = TRUE; | |
6350 | } | |
6351 | } | |
6352 | if (found) { /* Setup the return values. */ | |
6353 | *offsetp = (*cachep)[i+1]; | |
6354 | *sp = start + *offsetp; | |
6355 | if (*sp >= send) { | |
6356 | *sp = send; | |
6357 | *offsetp = send - start; | |
6358 | } | |
6359 | else if (*sp < start) { | |
6360 | *sp = start; | |
6361 | *offsetp = 0; | |
6362 | } | |
6363 | } | |
6364 | } | |
e23c8137 JH |
6365 | #ifdef PERL_UTF8_CACHE_ASSERT |
6366 | if (found) { | |
6367 | U8 *s = start; | |
6368 | I32 n = uoff; | |
6369 | ||
6370 | while (n-- && s < send) | |
6371 | s += UTF8SKIP(s); | |
6372 | ||
6373 | if (i == 0) { | |
6374 | assert(*offsetp == s - start); | |
6375 | assert((*cachep)[0] == (STRLEN)uoff); | |
6376 | assert((*cachep)[1] == *offsetp); | |
6377 | } | |
6378 | ASSERT_UTF8_CACHE(*cachep); | |
6379 | } | |
6380 | #endif | |
7e8c5dac | 6381 | } |
e23c8137 | 6382 | |
7e8c5dac HS |
6383 | return found; |
6384 | } | |
6385 | ||
6386 | /* | |
645c22ef DM |
6387 | =for apidoc sv_pos_u2b |
6388 | ||
1e54db1a | 6389 | Converts the value pointed to by offsetp from a count of UTF-8 chars from |
645c22ef DM |
6390 | the start of the string, to a count of the equivalent number of bytes; if |
6391 | lenp is non-zero, it does the same to lenp, but this time starting from | |
6392 | the offset, rather than from the start of the string. Handles magic and | |
6393 | type coercion. | |
6394 | ||
6395 | =cut | |
6396 | */ | |
6397 | ||
7e8c5dac HS |
6398 | /* |
6399 | * sv_pos_u2b() uses, like sv_pos_b2u(), the mg_ptr of the potential | |
6400 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
6401 | * byte offsets. See also the comments of S_utf8_mg_pos(). | |
6402 | * | |
6403 | */ | |
6404 | ||
a0ed51b3 | 6405 | void |
864dbfa3 | 6406 | Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp) |
a0ed51b3 | 6407 | { |
dfe13c55 GS |
6408 | U8 *start; |
6409 | U8 *s; | |
a0ed51b3 | 6410 | STRLEN len; |
7e8c5dac HS |
6411 | STRLEN *cache = 0; |
6412 | STRLEN boffset = 0; | |
a0ed51b3 LW |
6413 | |
6414 | if (!sv) | |
6415 | return; | |
6416 | ||
dfe13c55 | 6417 | start = s = (U8*)SvPV(sv, len); |
7e8c5dac HS |
6418 | if (len) { |
6419 | I32 uoffset = *offsetp; | |
6420 | U8 *send = s + len; | |
6421 | MAGIC *mg = 0; | |
6422 | bool found = FALSE; | |
6423 | ||
bdf77a2a | 6424 | if (utf8_mg_pos(sv, &mg, &cache, 0, offsetp, *offsetp, &s, start, send)) |
7e8c5dac HS |
6425 | found = TRUE; |
6426 | if (!found && uoffset > 0) { | |
6427 | while (s < send && uoffset--) | |
6428 | s += UTF8SKIP(s); | |
6429 | if (s >= send) | |
6430 | s = send; | |
bdf77a2a | 6431 | if (utf8_mg_pos_init(sv, &mg, &cache, 0, offsetp, s, start)) |
7e8c5dac HS |
6432 | boffset = cache[1]; |
6433 | *offsetp = s - start; | |
6434 | } | |
6435 | if (lenp) { | |
6436 | found = FALSE; | |
6437 | start = s; | |
bdf77a2a | 6438 | if (utf8_mg_pos(sv, &mg, &cache, 2, lenp, *lenp + *offsetp, &s, start, send)) { |
7e8c5dac HS |
6439 | *lenp -= boffset; |
6440 | found = TRUE; | |
6441 | } | |
6442 | if (!found && *lenp > 0) { | |
6443 | I32 ulen = *lenp; | |
6444 | if (ulen > 0) | |
6445 | while (s < send && ulen--) | |
6446 | s += UTF8SKIP(s); | |
6447 | if (s >= send) | |
6448 | s = send; | |
a67d7df9 | 6449 | utf8_mg_pos_init(sv, &mg, &cache, 2, lenp, s, start); |
7e8c5dac HS |
6450 | } |
6451 | *lenp = s - start; | |
6452 | } | |
e23c8137 | 6453 | ASSERT_UTF8_CACHE(cache); |
7e8c5dac HS |
6454 | } |
6455 | else { | |
6456 | *offsetp = 0; | |
6457 | if (lenp) | |
6458 | *lenp = 0; | |
a0ed51b3 | 6459 | } |
e23c8137 | 6460 | |
a0ed51b3 LW |
6461 | return; |
6462 | } | |
6463 | ||
645c22ef DM |
6464 | /* |
6465 | =for apidoc sv_pos_b2u | |
6466 | ||
6467 | Converts the value pointed to by offsetp from a count of bytes from the | |
1e54db1a | 6468 | start of the string, to a count of the equivalent number of UTF-8 chars. |
645c22ef DM |
6469 | Handles magic and type coercion. |
6470 | ||
6471 | =cut | |
6472 | */ | |
6473 | ||
7e8c5dac HS |
6474 | /* |
6475 | * sv_pos_b2u() uses, like sv_pos_u2b(), the mg_ptr of the potential | |
6476 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
6477 | * byte offsets. See also the comments of S_utf8_mg_pos(). | |
6478 | * | |
6479 | */ | |
6480 | ||
a0ed51b3 | 6481 | void |
7e8c5dac | 6482 | Perl_sv_pos_b2u(pTHX_ register SV* sv, I32* offsetp) |
a0ed51b3 | 6483 | { |
7e8c5dac | 6484 | U8* s; |
a0ed51b3 LW |
6485 | STRLEN len; |
6486 | ||
6487 | if (!sv) | |
6488 | return; | |
6489 | ||
dfe13c55 | 6490 | s = (U8*)SvPV(sv, len); |
eb160463 | 6491 | if ((I32)len < *offsetp) |
a0dbb045 | 6492 | Perl_croak(aTHX_ "panic: sv_pos_b2u: bad byte offset"); |
7e8c5dac HS |
6493 | else { |
6494 | U8* send = s + *offsetp; | |
6495 | MAGIC* mg = NULL; | |
6496 | STRLEN *cache = NULL; | |
6497 | ||
6498 | len = 0; | |
6499 | ||
6500 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
6501 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
6502 | if (mg && mg->mg_ptr) { | |
6503 | cache = (STRLEN *) mg->mg_ptr; | |
c5661c80 | 6504 | if (cache[1] == (STRLEN)*offsetp) { |
7e8c5dac HS |
6505 | /* An exact match. */ |
6506 | *offsetp = cache[0]; | |
6507 | ||
6508 | return; | |
6509 | } | |
c5661c80 | 6510 | else if (cache[1] < (STRLEN)*offsetp) { |
7e8c5dac HS |
6511 | /* We already know part of the way. */ |
6512 | len = cache[0]; | |
6513 | s += cache[1]; | |
6514 | /* Let the below loop do the rest. */ | |
6515 | } | |
6516 | else { /* cache[1] > *offsetp */ | |
6517 | /* We already know all of the way, now we may | |
6518 | * be able to walk back. The same assumption | |
6519 | * is made as in S_utf8_mg_pos(), namely that | |
6520 | * walking backward is twice slower than | |
6521 | * walking forward. */ | |
6522 | STRLEN forw = *offsetp; | |
6523 | STRLEN backw = cache[1] - *offsetp; | |
6524 | ||
6525 | if (!(forw < 2 * backw)) { | |
6526 | U8 *p = s + cache[1]; | |
6527 | STRLEN ubackw = 0; | |
6528 | ||
a5b510f2 AE |
6529 | cache[1] -= backw; |
6530 | ||
7e8c5dac HS |
6531 | while (backw--) { |
6532 | p--; | |
0aeb64d0 | 6533 | while (UTF8_IS_CONTINUATION(*p)) { |
7e8c5dac | 6534 | p--; |
0aeb64d0 JH |
6535 | backw--; |
6536 | } | |
7e8c5dac HS |
6537 | ubackw++; |
6538 | } | |
6539 | ||
6540 | cache[0] -= ubackw; | |
0aeb64d0 | 6541 | *offsetp = cache[0]; |
a67d7df9 TS |
6542 | |
6543 | /* Drop the stale "length" cache */ | |
6544 | cache[2] = 0; | |
6545 | cache[3] = 0; | |
6546 | ||
0aeb64d0 | 6547 | return; |
7e8c5dac HS |
6548 | } |
6549 | } | |
6550 | } | |
e23c8137 | 6551 | ASSERT_UTF8_CACHE(cache); |
a0dbb045 | 6552 | } |
7e8c5dac HS |
6553 | |
6554 | while (s < send) { | |
6555 | STRLEN n = 1; | |
6556 | ||
6557 | /* Call utf8n_to_uvchr() to validate the sequence | |
6558 | * (unless a simple non-UTF character) */ | |
6559 | if (!UTF8_IS_INVARIANT(*s)) | |
6560 | utf8n_to_uvchr(s, UTF8SKIP(s), &n, 0); | |
6561 | if (n > 0) { | |
6562 | s += n; | |
6563 | len++; | |
6564 | } | |
6565 | else | |
6566 | break; | |
6567 | } | |
6568 | ||
6569 | if (!SvREADONLY(sv)) { | |
6570 | if (!mg) { | |
6571 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
6572 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
6573 | } | |
6574 | assert(mg); | |
6575 | ||
6576 | if (!mg->mg_ptr) { | |
979acdb5 | 6577 | Newz(0, cache, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); |
7e8c5dac HS |
6578 | mg->mg_ptr = (char *) cache; |
6579 | } | |
6580 | assert(cache); | |
6581 | ||
6582 | cache[0] = len; | |
6583 | cache[1] = *offsetp; | |
a67d7df9 TS |
6584 | /* Drop the stale "length" cache */ |
6585 | cache[2] = 0; | |
6586 | cache[3] = 0; | |
7e8c5dac HS |
6587 | } |
6588 | ||
6589 | *offsetp = len; | |
a0ed51b3 | 6590 | } |
a0ed51b3 LW |
6591 | return; |
6592 | } | |
6593 | ||
954c1994 GS |
6594 | /* |
6595 | =for apidoc sv_eq | |
6596 | ||
6597 | Returns a boolean indicating whether the strings in the two SVs are | |
645c22ef DM |
6598 | identical. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
6599 | coerce its args to strings if necessary. | |
954c1994 GS |
6600 | |
6601 | =cut | |
6602 | */ | |
6603 | ||
79072805 | 6604 | I32 |
e01b9e88 | 6605 | Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2) |
79072805 LW |
6606 | { |
6607 | char *pv1; | |
463ee0b2 | 6608 | STRLEN cur1; |
79072805 | 6609 | char *pv2; |
463ee0b2 | 6610 | STRLEN cur2; |
e01b9e88 | 6611 | I32 eq = 0; |
553e1bcc AT |
6612 | char *tpv = Nullch; |
6613 | SV* svrecode = Nullsv; | |
79072805 | 6614 | |
e01b9e88 | 6615 | if (!sv1) { |
79072805 LW |
6616 | pv1 = ""; |
6617 | cur1 = 0; | |
6618 | } | |
463ee0b2 | 6619 | else |
e01b9e88 | 6620 | pv1 = SvPV(sv1, cur1); |
79072805 | 6621 | |
e01b9e88 SC |
6622 | if (!sv2){ |
6623 | pv2 = ""; | |
6624 | cur2 = 0; | |
92d29cee | 6625 | } |
e01b9e88 SC |
6626 | else |
6627 | pv2 = SvPV(sv2, cur2); | |
79072805 | 6628 | |
cf48d248 | 6629 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
6630 | /* Differing utf8ness. |
6631 | * Do not UTF8size the comparands as a side-effect. */ | |
6632 | if (PL_encoding) { | |
6633 | if (SvUTF8(sv1)) { | |
553e1bcc AT |
6634 | svrecode = newSVpvn(pv2, cur2); |
6635 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6636 | pv2 = SvPV(svrecode, cur2); | |
799ef3cb JH |
6637 | } |
6638 | else { | |
553e1bcc AT |
6639 | svrecode = newSVpvn(pv1, cur1); |
6640 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6641 | pv1 = SvPV(svrecode, cur1); | |
799ef3cb JH |
6642 | } |
6643 | /* Now both are in UTF-8. */ | |
0a1bd7ac DM |
6644 | if (cur1 != cur2) { |
6645 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6646 | return FALSE; |
0a1bd7ac | 6647 | } |
799ef3cb JH |
6648 | } |
6649 | else { | |
6650 | bool is_utf8 = TRUE; | |
6651 | ||
6652 | if (SvUTF8(sv1)) { | |
6653 | /* sv1 is the UTF-8 one, | |
6654 | * if is equal it must be downgrade-able */ | |
6655 | char *pv = (char*)bytes_from_utf8((U8*)pv1, | |
6656 | &cur1, &is_utf8); | |
6657 | if (pv != pv1) | |
553e1bcc | 6658 | pv1 = tpv = pv; |
799ef3cb JH |
6659 | } |
6660 | else { | |
6661 | /* sv2 is the UTF-8 one, | |
6662 | * if is equal it must be downgrade-able */ | |
6663 | char *pv = (char *)bytes_from_utf8((U8*)pv2, | |
6664 | &cur2, &is_utf8); | |
6665 | if (pv != pv2) | |
553e1bcc | 6666 | pv2 = tpv = pv; |
799ef3cb JH |
6667 | } |
6668 | if (is_utf8) { | |
6669 | /* Downgrade not possible - cannot be eq */ | |
bf694877 | 6670 | assert (tpv == 0); |
799ef3cb JH |
6671 | return FALSE; |
6672 | } | |
6673 | } | |
cf48d248 JH |
6674 | } |
6675 | ||
6676 | if (cur1 == cur2) | |
765f542d | 6677 | eq = (pv1 == pv2) || memEQ(pv1, pv2, cur1); |
e01b9e88 | 6678 | |
553e1bcc AT |
6679 | if (svrecode) |
6680 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6681 | |
553e1bcc AT |
6682 | if (tpv) |
6683 | Safefree(tpv); | |
cf48d248 | 6684 | |
e01b9e88 | 6685 | return eq; |
79072805 LW |
6686 | } |
6687 | ||
954c1994 GS |
6688 | /* |
6689 | =for apidoc sv_cmp | |
6690 | ||
6691 | Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the | |
6692 | string in C<sv1> is less than, equal to, or greater than the string in | |
645c22ef DM |
6693 | C<sv2>. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
6694 | coerce its args to strings if necessary. See also C<sv_cmp_locale>. | |
954c1994 GS |
6695 | |
6696 | =cut | |
6697 | */ | |
6698 | ||
79072805 | 6699 | I32 |
e01b9e88 | 6700 | Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2) |
79072805 | 6701 | { |
560a288e | 6702 | STRLEN cur1, cur2; |
553e1bcc | 6703 | char *pv1, *pv2, *tpv = Nullch; |
cf48d248 | 6704 | I32 cmp; |
553e1bcc | 6705 | SV *svrecode = Nullsv; |
560a288e | 6706 | |
e01b9e88 SC |
6707 | if (!sv1) { |
6708 | pv1 = ""; | |
560a288e GS |
6709 | cur1 = 0; |
6710 | } | |
e01b9e88 SC |
6711 | else |
6712 | pv1 = SvPV(sv1, cur1); | |
560a288e | 6713 | |
553e1bcc | 6714 | if (!sv2) { |
e01b9e88 | 6715 | pv2 = ""; |
560a288e GS |
6716 | cur2 = 0; |
6717 | } | |
e01b9e88 SC |
6718 | else |
6719 | pv2 = SvPV(sv2, cur2); | |
79072805 | 6720 | |
cf48d248 | 6721 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
6722 | /* Differing utf8ness. |
6723 | * Do not UTF8size the comparands as a side-effect. */ | |
cf48d248 | 6724 | if (SvUTF8(sv1)) { |
799ef3cb | 6725 | if (PL_encoding) { |
553e1bcc AT |
6726 | svrecode = newSVpvn(pv2, cur2); |
6727 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6728 | pv2 = SvPV(svrecode, cur2); | |
799ef3cb JH |
6729 | } |
6730 | else { | |
553e1bcc | 6731 | pv2 = tpv = (char*)bytes_to_utf8((U8*)pv2, &cur2); |
799ef3cb | 6732 | } |
cf48d248 JH |
6733 | } |
6734 | else { | |
799ef3cb | 6735 | if (PL_encoding) { |
553e1bcc AT |
6736 | svrecode = newSVpvn(pv1, cur1); |
6737 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6738 | pv1 = SvPV(svrecode, cur1); | |
799ef3cb JH |
6739 | } |
6740 | else { | |
553e1bcc | 6741 | pv1 = tpv = (char*)bytes_to_utf8((U8*)pv1, &cur1); |
799ef3cb | 6742 | } |
cf48d248 JH |
6743 | } |
6744 | } | |
6745 | ||
e01b9e88 | 6746 | if (!cur1) { |
cf48d248 | 6747 | cmp = cur2 ? -1 : 0; |
e01b9e88 | 6748 | } else if (!cur2) { |
cf48d248 JH |
6749 | cmp = 1; |
6750 | } else { | |
6751 | I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2); | |
e01b9e88 SC |
6752 | |
6753 | if (retval) { | |
cf48d248 | 6754 | cmp = retval < 0 ? -1 : 1; |
e01b9e88 | 6755 | } else if (cur1 == cur2) { |
cf48d248 JH |
6756 | cmp = 0; |
6757 | } else { | |
6758 | cmp = cur1 < cur2 ? -1 : 1; | |
e01b9e88 | 6759 | } |
cf48d248 | 6760 | } |
16660edb | 6761 | |
553e1bcc AT |
6762 | if (svrecode) |
6763 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6764 | |
553e1bcc AT |
6765 | if (tpv) |
6766 | Safefree(tpv); | |
cf48d248 JH |
6767 | |
6768 | return cmp; | |
bbce6d69 | 6769 | } |
16660edb | 6770 | |
c461cf8f JH |
6771 | /* |
6772 | =for apidoc sv_cmp_locale | |
6773 | ||
645c22ef DM |
6774 | Compares the strings in two SVs in a locale-aware manner. Is UTF-8 and |
6775 | 'use bytes' aware, handles get magic, and will coerce its args to strings | |
6776 | if necessary. See also C<sv_cmp_locale>. See also C<sv_cmp>. | |
c461cf8f JH |
6777 | |
6778 | =cut | |
6779 | */ | |
6780 | ||
bbce6d69 | 6781 | I32 |
864dbfa3 | 6782 | Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2) |
bbce6d69 | 6783 | { |
36477c24 | 6784 | #ifdef USE_LOCALE_COLLATE |
16660edb | 6785 | |
bbce6d69 | 6786 | char *pv1, *pv2; |
6787 | STRLEN len1, len2; | |
6788 | I32 retval; | |
16660edb | 6789 | |
3280af22 | 6790 | if (PL_collation_standard) |
bbce6d69 | 6791 | goto raw_compare; |
16660edb | 6792 | |
bbce6d69 | 6793 | len1 = 0; |
8ac85365 | 6794 | pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL; |
bbce6d69 | 6795 | len2 = 0; |
8ac85365 | 6796 | pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL; |
16660edb | 6797 | |
bbce6d69 | 6798 | if (!pv1 || !len1) { |
6799 | if (pv2 && len2) | |
6800 | return -1; | |
6801 | else | |
6802 | goto raw_compare; | |
6803 | } | |
6804 | else { | |
6805 | if (!pv2 || !len2) | |
6806 | return 1; | |
6807 | } | |
16660edb | 6808 | |
bbce6d69 | 6809 | retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2); |
16660edb | 6810 | |
bbce6d69 | 6811 | if (retval) |
16660edb | 6812 | return retval < 0 ? -1 : 1; |
6813 | ||
bbce6d69 | 6814 | /* |
6815 | * When the result of collation is equality, that doesn't mean | |
6816 | * that there are no differences -- some locales exclude some | |
6817 | * characters from consideration. So to avoid false equalities, | |
6818 | * we use the raw string as a tiebreaker. | |
6819 | */ | |
16660edb | 6820 | |
bbce6d69 | 6821 | raw_compare: |
6822 | /* FALL THROUGH */ | |
16660edb | 6823 | |
36477c24 | 6824 | #endif /* USE_LOCALE_COLLATE */ |
16660edb | 6825 | |
bbce6d69 | 6826 | return sv_cmp(sv1, sv2); |
6827 | } | |
79072805 | 6828 | |
645c22ef | 6829 | |
36477c24 | 6830 | #ifdef USE_LOCALE_COLLATE |
645c22ef | 6831 | |
7a4c00b4 | 6832 | /* |
645c22ef DM |
6833 | =for apidoc sv_collxfrm |
6834 | ||
6835 | Add Collate Transform magic to an SV if it doesn't already have it. | |
6836 | ||
6837 | Any scalar variable may carry PERL_MAGIC_collxfrm magic that contains the | |
6838 | scalar data of the variable, but transformed to such a format that a normal | |
6839 | memory comparison can be used to compare the data according to the locale | |
6840 | settings. | |
6841 | ||
6842 | =cut | |
6843 | */ | |
6844 | ||
bbce6d69 | 6845 | char * |
864dbfa3 | 6846 | Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp) |
bbce6d69 | 6847 | { |
7a4c00b4 | 6848 | MAGIC *mg; |
16660edb | 6849 | |
14befaf4 | 6850 | mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_collxfrm) : (MAGIC *) NULL; |
3280af22 | 6851 | if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) { |
bbce6d69 | 6852 | char *s, *xf; |
6853 | STRLEN len, xlen; | |
6854 | ||
7a4c00b4 | 6855 | if (mg) |
6856 | Safefree(mg->mg_ptr); | |
bbce6d69 | 6857 | s = SvPV(sv, len); |
6858 | if ((xf = mem_collxfrm(s, len, &xlen))) { | |
ff0cee69 | 6859 | if (SvREADONLY(sv)) { |
6860 | SAVEFREEPV(xf); | |
6861 | *nxp = xlen; | |
3280af22 | 6862 | return xf + sizeof(PL_collation_ix); |
ff0cee69 | 6863 | } |
7a4c00b4 | 6864 | if (! mg) { |
14befaf4 DM |
6865 | sv_magic(sv, 0, PERL_MAGIC_collxfrm, 0, 0); |
6866 | mg = mg_find(sv, PERL_MAGIC_collxfrm); | |
7a4c00b4 | 6867 | assert(mg); |
bbce6d69 | 6868 | } |
7a4c00b4 | 6869 | mg->mg_ptr = xf; |
565764a8 | 6870 | mg->mg_len = xlen; |
7a4c00b4 | 6871 | } |
6872 | else { | |
ff0cee69 | 6873 | if (mg) { |
6874 | mg->mg_ptr = NULL; | |
565764a8 | 6875 | mg->mg_len = -1; |
ff0cee69 | 6876 | } |
bbce6d69 | 6877 | } |
6878 | } | |
7a4c00b4 | 6879 | if (mg && mg->mg_ptr) { |
565764a8 | 6880 | *nxp = mg->mg_len; |
3280af22 | 6881 | return mg->mg_ptr + sizeof(PL_collation_ix); |
bbce6d69 | 6882 | } |
6883 | else { | |
6884 | *nxp = 0; | |
6885 | return NULL; | |
16660edb | 6886 | } |
79072805 LW |
6887 | } |
6888 | ||
36477c24 | 6889 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 6890 | |
c461cf8f JH |
6891 | /* |
6892 | =for apidoc sv_gets | |
6893 | ||
6894 | Get a line from the filehandle and store it into the SV, optionally | |
6895 | appending to the currently-stored string. | |
6896 | ||
6897 | =cut | |
6898 | */ | |
6899 | ||
79072805 | 6900 | char * |
864dbfa3 | 6901 | Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append) |
79072805 | 6902 | { |
c07a80fd | 6903 | char *rsptr; |
6904 | STRLEN rslen; | |
6905 | register STDCHAR rslast; | |
6906 | register STDCHAR *bp; | |
6907 | register I32 cnt; | |
9c5ffd7c | 6908 | I32 i = 0; |
8bfdd7d9 | 6909 | I32 rspara = 0; |
e311fd51 | 6910 | I32 recsize; |
c07a80fd | 6911 | |
bc44a8a2 NC |
6912 | if (SvTHINKFIRST(sv)) |
6913 | sv_force_normal_flags(sv, append ? 0 : SV_COW_DROP_PV); | |
765f542d NC |
6914 | /* XXX. If you make this PVIV, then copy on write can copy scalars read |
6915 | from <>. | |
6916 | However, perlbench says it's slower, because the existing swipe code | |
6917 | is faster than copy on write. | |
6918 | Swings and roundabouts. */ | |
6fc92669 | 6919 | (void)SvUPGRADE(sv, SVt_PV); |
99491443 | 6920 | |
ff68c719 | 6921 | SvSCREAM_off(sv); |
efd8b2ba AE |
6922 | |
6923 | if (append) { | |
6924 | if (PerlIO_isutf8(fp)) { | |
6925 | if (!SvUTF8(sv)) { | |
6926 | sv_utf8_upgrade_nomg(sv); | |
6927 | sv_pos_u2b(sv,&append,0); | |
6928 | } | |
6929 | } else if (SvUTF8(sv)) { | |
6930 | SV *tsv = NEWSV(0,0); | |
6931 | sv_gets(tsv, fp, 0); | |
6932 | sv_utf8_upgrade_nomg(tsv); | |
6933 | SvCUR_set(sv,append); | |
6934 | sv_catsv(sv,tsv); | |
6935 | sv_free(tsv); | |
6936 | goto return_string_or_null; | |
6937 | } | |
6938 | } | |
6939 | ||
6940 | SvPOK_only(sv); | |
6941 | if (PerlIO_isutf8(fp)) | |
6942 | SvUTF8_on(sv); | |
c07a80fd | 6943 | |
923e4eb5 | 6944 | if (IN_PERL_COMPILETIME) { |
8bfdd7d9 HS |
6945 | /* we always read code in line mode */ |
6946 | rsptr = "\n"; | |
6947 | rslen = 1; | |
6948 | } | |
6949 | else if (RsSNARF(PL_rs)) { | |
e468d35b NIS |
6950 | /* If it is a regular disk file use size from stat() as estimate |
6951 | of amount we are going to read - may result in malloc-ing | |
6952 | more memory than we realy need if layers bellow reduce | |
6953 | size we read (e.g. CRLF or a gzip layer) | |
6954 | */ | |
e311fd51 | 6955 | Stat_t st; |
e468d35b NIS |
6956 | if (!PerlLIO_fstat(PerlIO_fileno(fp), &st) && S_ISREG(st.st_mode)) { |
6957 | Off_t offset = PerlIO_tell(fp); | |
58f1856e | 6958 | if (offset != (Off_t) -1 && st.st_size + append > offset) { |
e468d35b NIS |
6959 | (void) SvGROW(sv, (STRLEN)((st.st_size - offset) + append + 1)); |
6960 | } | |
6961 | } | |
c07a80fd | 6962 | rsptr = NULL; |
6963 | rslen = 0; | |
6964 | } | |
3280af22 | 6965 | else if (RsRECORD(PL_rs)) { |
e311fd51 | 6966 | I32 bytesread; |
5b2b9c68 HM |
6967 | char *buffer; |
6968 | ||
6969 | /* Grab the size of the record we're getting */ | |
3280af22 | 6970 | recsize = SvIV(SvRV(PL_rs)); |
e311fd51 | 6971 | buffer = SvGROW(sv, (STRLEN)(recsize + append + 1)) + append; |
5b2b9c68 HM |
6972 | /* Go yank in */ |
6973 | #ifdef VMS | |
6974 | /* VMS wants read instead of fread, because fread doesn't respect */ | |
6975 | /* RMS record boundaries. This is not necessarily a good thing to be */ | |
e468d35b NIS |
6976 | /* doing, but we've got no other real choice - except avoid stdio |
6977 | as implementation - perhaps write a :vms layer ? | |
6978 | */ | |
5b2b9c68 HM |
6979 | bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize); |
6980 | #else | |
6981 | bytesread = PerlIO_read(fp, buffer, recsize); | |
6982 | #endif | |
27e6ca2d AE |
6983 | if (bytesread < 0) |
6984 | bytesread = 0; | |
e311fd51 | 6985 | SvCUR_set(sv, bytesread += append); |
e670df4e | 6986 | buffer[bytesread] = '\0'; |
efd8b2ba | 6987 | goto return_string_or_null; |
5b2b9c68 | 6988 | } |
3280af22 | 6989 | else if (RsPARA(PL_rs)) { |
c07a80fd | 6990 | rsptr = "\n\n"; |
6991 | rslen = 2; | |
8bfdd7d9 | 6992 | rspara = 1; |
c07a80fd | 6993 | } |
7d59b7e4 NIS |
6994 | else { |
6995 | /* Get $/ i.e. PL_rs into same encoding as stream wants */ | |
6996 | if (PerlIO_isutf8(fp)) { | |
6997 | rsptr = SvPVutf8(PL_rs, rslen); | |
6998 | } | |
6999 | else { | |
7000 | if (SvUTF8(PL_rs)) { | |
7001 | if (!sv_utf8_downgrade(PL_rs, TRUE)) { | |
7002 | Perl_croak(aTHX_ "Wide character in $/"); | |
7003 | } | |
7004 | } | |
7005 | rsptr = SvPV(PL_rs, rslen); | |
7006 | } | |
7007 | } | |
7008 | ||
c07a80fd | 7009 | rslast = rslen ? rsptr[rslen - 1] : '\0'; |
7010 | ||
8bfdd7d9 | 7011 | if (rspara) { /* have to do this both before and after */ |
79072805 | 7012 | do { /* to make sure file boundaries work right */ |
760ac839 | 7013 | if (PerlIO_eof(fp)) |
a0d0e21e | 7014 | return 0; |
760ac839 | 7015 | i = PerlIO_getc(fp); |
79072805 | 7016 | if (i != '\n') { |
a0d0e21e LW |
7017 | if (i == -1) |
7018 | return 0; | |
760ac839 | 7019 | PerlIO_ungetc(fp,i); |
79072805 LW |
7020 | break; |
7021 | } | |
7022 | } while (i != EOF); | |
7023 | } | |
c07a80fd | 7024 | |
760ac839 LW |
7025 | /* See if we know enough about I/O mechanism to cheat it ! */ |
7026 | ||
7027 | /* This used to be #ifdef test - it is made run-time test for ease | |
1c846c1f | 7028 | of abstracting out stdio interface. One call should be cheap |
760ac839 LW |
7029 | enough here - and may even be a macro allowing compile |
7030 | time optimization. | |
7031 | */ | |
7032 | ||
7033 | if (PerlIO_fast_gets(fp)) { | |
7034 | ||
7035 | /* | |
7036 | * We're going to steal some values from the stdio struct | |
7037 | * and put EVERYTHING in the innermost loop into registers. | |
7038 | */ | |
7039 | register STDCHAR *ptr; | |
7040 | STRLEN bpx; | |
7041 | I32 shortbuffered; | |
7042 | ||
16660edb | 7043 | #if defined(VMS) && defined(PERLIO_IS_STDIO) |
7044 | /* An ungetc()d char is handled separately from the regular | |
7045 | * buffer, so we getc() it back out and stuff it in the buffer. | |
7046 | */ | |
7047 | i = PerlIO_getc(fp); | |
7048 | if (i == EOF) return 0; | |
7049 | *(--((*fp)->_ptr)) = (unsigned char) i; | |
7050 | (*fp)->_cnt++; | |
7051 | #endif | |
c07a80fd | 7052 | |
c2960299 | 7053 | /* Here is some breathtakingly efficient cheating */ |
c07a80fd | 7054 | |
a20bf0c3 | 7055 | cnt = PerlIO_get_cnt(fp); /* get count into register */ |
e468d35b NIS |
7056 | /* make sure we have the room */ |
7057 | if ((I32)(SvLEN(sv) - append) <= cnt + 1) { | |
7058 | /* Not room for all of it | |
7059 | if we are looking for a separator and room for some | |
7060 | */ | |
7061 | if (rslen && cnt > 80 && (I32)SvLEN(sv) > append) { | |
7062 | /* just process what we have room for */ | |
79072805 LW |
7063 | shortbuffered = cnt - SvLEN(sv) + append + 1; |
7064 | cnt -= shortbuffered; | |
7065 | } | |
7066 | else { | |
7067 | shortbuffered = 0; | |
bbce6d69 | 7068 | /* remember that cnt can be negative */ |
eb160463 | 7069 | SvGROW(sv, (STRLEN)(append + (cnt <= 0 ? 2 : (cnt + 1)))); |
79072805 LW |
7070 | } |
7071 | } | |
e468d35b | 7072 | else |
79072805 | 7073 | shortbuffered = 0; |
c07a80fd | 7074 | bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */ |
a20bf0c3 | 7075 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); |
16660edb | 7076 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7077 | "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
16660edb | 7078 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
ba7abf9d | 7079 | "Screamer: entering: PerlIO * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 7080 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 7081 | PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0))); |
79072805 LW |
7082 | for (;;) { |
7083 | screamer: | |
93a17b20 | 7084 | if (cnt > 0) { |
c07a80fd | 7085 | if (rslen) { |
760ac839 LW |
7086 | while (cnt > 0) { /* this | eat */ |
7087 | cnt--; | |
c07a80fd | 7088 | if ((*bp++ = *ptr++) == rslast) /* really | dust */ |
7089 | goto thats_all_folks; /* screams | sed :-) */ | |
7090 | } | |
7091 | } | |
7092 | else { | |
1c846c1f NIS |
7093 | Copy(ptr, bp, cnt, char); /* this | eat */ |
7094 | bp += cnt; /* screams | dust */ | |
c07a80fd | 7095 | ptr += cnt; /* louder | sed :-) */ |
a5f75d66 | 7096 | cnt = 0; |
93a17b20 | 7097 | } |
79072805 LW |
7098 | } |
7099 | ||
748a9306 | 7100 | if (shortbuffered) { /* oh well, must extend */ |
79072805 LW |
7101 | cnt = shortbuffered; |
7102 | shortbuffered = 0; | |
c07a80fd | 7103 | bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */ |
79072805 LW |
7104 | SvCUR_set(sv, bpx); |
7105 | SvGROW(sv, SvLEN(sv) + append + cnt + 2); | |
c07a80fd | 7106 | bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */ |
79072805 LW |
7107 | continue; |
7108 | } | |
7109 | ||
16660edb | 7110 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 GS |
7111 | "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n", |
7112 | PTR2UV(ptr),(long)cnt)); | |
cc00df79 | 7113 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* deregisterize cnt and ptr */ |
ba7abf9d | 7114 | #if 0 |
16660edb | 7115 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7116 | "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 7117 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 7118 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 7119 | #endif |
1c846c1f | 7120 | /* This used to call 'filbuf' in stdio form, but as that behaves like |
774d564b | 7121 | getc when cnt <= 0 we use PerlIO_getc here to avoid introducing |
7122 | another abstraction. */ | |
760ac839 | 7123 | i = PerlIO_getc(fp); /* get more characters */ |
ba7abf9d | 7124 | #if 0 |
16660edb | 7125 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7126 | "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 7127 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 7128 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 7129 | #endif |
a20bf0c3 JH |
7130 | cnt = PerlIO_get_cnt(fp); |
7131 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */ | |
16660edb | 7132 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7133 | "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
79072805 | 7134 | |
748a9306 LW |
7135 | if (i == EOF) /* all done for ever? */ |
7136 | goto thats_really_all_folks; | |
7137 | ||
c07a80fd | 7138 | bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */ |
79072805 LW |
7139 | SvCUR_set(sv, bpx); |
7140 | SvGROW(sv, bpx + cnt + 2); | |
c07a80fd | 7141 | bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */ |
7142 | ||
eb160463 | 7143 | *bp++ = (STDCHAR)i; /* store character from PerlIO_getc */ |
79072805 | 7144 | |
c07a80fd | 7145 | if (rslen && (STDCHAR)i == rslast) /* all done for now? */ |
79072805 | 7146 | goto thats_all_folks; |
79072805 LW |
7147 | } |
7148 | ||
7149 | thats_all_folks: | |
eb160463 | 7150 | if ((rslen > 1 && (STRLEN)(bp - (STDCHAR*)SvPVX(sv)) < rslen) || |
36477c24 | 7151 | memNE((char*)bp - rslen, rsptr, rslen)) |
760ac839 | 7152 | goto screamer; /* go back to the fray */ |
79072805 LW |
7153 | thats_really_all_folks: |
7154 | if (shortbuffered) | |
7155 | cnt += shortbuffered; | |
16660edb | 7156 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7157 | "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
cc00df79 | 7158 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* put these back or we're in trouble */ |
16660edb | 7159 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7160 | "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 7161 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 7162 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
79072805 | 7163 | *bp = '\0'; |
760ac839 | 7164 | SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */ |
16660edb | 7165 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
fb73857a | 7166 | "Screamer: done, len=%ld, string=|%.*s|\n", |
7167 | (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv))); | |
760ac839 LW |
7168 | } |
7169 | else | |
79072805 | 7170 | { |
6edd2cd5 JH |
7171 | /*The big, slow, and stupid way. */ |
7172 | ||
7173 | /* Any stack-challenged places. */ | |
33d5f59c | 7174 | #if defined(EPOC) |
6edd2cd5 JH |
7175 | /* EPOC: need to work around SDK features. * |
7176 | * On WINS: MS VC5 generates calls to _chkstk, * | |
7177 | * if a "large" stack frame is allocated. * | |
7178 | * gcc on MARM does not generate calls like these. */ | |
7179 | # define USEHEAPINSTEADOFSTACK | |
7180 | #endif | |
7181 | ||
7182 | #ifdef USEHEAPINSTEADOFSTACK | |
7183 | STDCHAR *buf = 0; | |
7184 | New(0, buf, 8192, STDCHAR); | |
7185 | assert(buf); | |
4d2c4e07 | 7186 | #else |
6edd2cd5 | 7187 | STDCHAR buf[8192]; |
4d2c4e07 | 7188 | #endif |
79072805 | 7189 | |
760ac839 | 7190 | screamer2: |
c07a80fd | 7191 | if (rslen) { |
760ac839 LW |
7192 | register STDCHAR *bpe = buf + sizeof(buf); |
7193 | bp = buf; | |
eb160463 | 7194 | while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = (STDCHAR)i) != rslast && bp < bpe) |
760ac839 LW |
7195 | ; /* keep reading */ |
7196 | cnt = bp - buf; | |
c07a80fd | 7197 | } |
7198 | else { | |
760ac839 | 7199 | cnt = PerlIO_read(fp,(char*)buf, sizeof(buf)); |
16660edb | 7200 | /* Accomodate broken VAXC compiler, which applies U8 cast to |
7201 | * both args of ?: operator, causing EOF to change into 255 | |
7202 | */ | |
37be0adf | 7203 | if (cnt > 0) |
cbe9e203 JH |
7204 | i = (U8)buf[cnt - 1]; |
7205 | else | |
37be0adf | 7206 | i = EOF; |
c07a80fd | 7207 | } |
79072805 | 7208 | |
cbe9e203 JH |
7209 | if (cnt < 0) |
7210 | cnt = 0; /* we do need to re-set the sv even when cnt <= 0 */ | |
7211 | if (append) | |
7212 | sv_catpvn(sv, (char *) buf, cnt); | |
7213 | else | |
7214 | sv_setpvn(sv, (char *) buf, cnt); | |
c07a80fd | 7215 | |
7216 | if (i != EOF && /* joy */ | |
7217 | (!rslen || | |
7218 | SvCUR(sv) < rslen || | |
36477c24 | 7219 | memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen))) |
79072805 LW |
7220 | { |
7221 | append = -1; | |
63e4d877 CS |
7222 | /* |
7223 | * If we're reading from a TTY and we get a short read, | |
7224 | * indicating that the user hit his EOF character, we need | |
7225 | * to notice it now, because if we try to read from the TTY | |
7226 | * again, the EOF condition will disappear. | |
7227 | * | |
7228 | * The comparison of cnt to sizeof(buf) is an optimization | |
7229 | * that prevents unnecessary calls to feof(). | |
7230 | * | |
7231 | * - jik 9/25/96 | |
7232 | */ | |
7233 | if (!(cnt < sizeof(buf) && PerlIO_eof(fp))) | |
7234 | goto screamer2; | |
79072805 | 7235 | } |
6edd2cd5 JH |
7236 | |
7237 | #ifdef USEHEAPINSTEADOFSTACK | |
7238 | Safefree(buf); | |
7239 | #endif | |
79072805 LW |
7240 | } |
7241 | ||
8bfdd7d9 | 7242 | if (rspara) { /* have to do this both before and after */ |
c07a80fd | 7243 | while (i != EOF) { /* to make sure file boundaries work right */ |
760ac839 | 7244 | i = PerlIO_getc(fp); |
79072805 | 7245 | if (i != '\n') { |
760ac839 | 7246 | PerlIO_ungetc(fp,i); |
79072805 LW |
7247 | break; |
7248 | } | |
7249 | } | |
7250 | } | |
c07a80fd | 7251 | |
efd8b2ba | 7252 | return_string_or_null: |
c07a80fd | 7253 | return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch; |
79072805 LW |
7254 | } |
7255 | ||
954c1994 GS |
7256 | /* |
7257 | =for apidoc sv_inc | |
7258 | ||
645c22ef DM |
7259 | Auto-increment of the value in the SV, doing string to numeric conversion |
7260 | if necessary. Handles 'get' magic. | |
954c1994 GS |
7261 | |
7262 | =cut | |
7263 | */ | |
7264 | ||
79072805 | 7265 | void |
864dbfa3 | 7266 | Perl_sv_inc(pTHX_ register SV *sv) |
79072805 LW |
7267 | { |
7268 | register char *d; | |
463ee0b2 | 7269 | int flags; |
79072805 LW |
7270 | |
7271 | if (!sv) | |
7272 | return; | |
b23a5f78 GB |
7273 | if (SvGMAGICAL(sv)) |
7274 | mg_get(sv); | |
ed6116ce | 7275 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
7276 | if (SvIsCOW(sv)) |
7277 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 7278 | if (SvREADONLY(sv)) { |
923e4eb5 | 7279 | if (IN_PERL_RUNTIME) |
cea2e8a9 | 7280 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 7281 | } |
a0d0e21e | 7282 | if (SvROK(sv)) { |
b5be31e9 | 7283 | IV i; |
9e7bc3e8 JD |
7284 | if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) |
7285 | return; | |
56431972 | 7286 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
7287 | sv_unref(sv); |
7288 | sv_setiv(sv, i); | |
a0d0e21e | 7289 | } |
ed6116ce | 7290 | } |
8990e307 | 7291 | flags = SvFLAGS(sv); |
28e5dec8 JH |
7292 | if ((flags & (SVp_NOK|SVp_IOK)) == SVp_NOK) { |
7293 | /* It's (privately or publicly) a float, but not tested as an | |
7294 | integer, so test it to see. */ | |
d460ef45 | 7295 | (void) SvIV(sv); |
28e5dec8 JH |
7296 | flags = SvFLAGS(sv); |
7297 | } | |
7298 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { | |
7299 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 7300 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 7301 | oops_its_int: |
59d8ce62 | 7302 | #endif |
25da4f38 IZ |
7303 | if (SvIsUV(sv)) { |
7304 | if (SvUVX(sv) == UV_MAX) | |
a1e868e7 | 7305 | sv_setnv(sv, UV_MAX_P1); |
25da4f38 IZ |
7306 | else |
7307 | (void)SvIOK_only_UV(sv); | |
7308 | ++SvUVX(sv); | |
7309 | } else { | |
7310 | if (SvIVX(sv) == IV_MAX) | |
28e5dec8 | 7311 | sv_setuv(sv, (UV)IV_MAX + 1); |
25da4f38 IZ |
7312 | else { |
7313 | (void)SvIOK_only(sv); | |
7314 | ++SvIVX(sv); | |
1c846c1f | 7315 | } |
55497cff | 7316 | } |
79072805 LW |
7317 | return; |
7318 | } | |
28e5dec8 JH |
7319 | if (flags & SVp_NOK) { |
7320 | (void)SvNOK_only(sv); | |
7321 | SvNVX(sv) += 1.0; | |
7322 | return; | |
7323 | } | |
7324 | ||
8990e307 | 7325 | if (!(flags & SVp_POK) || !*SvPVX(sv)) { |
28e5dec8 JH |
7326 | if ((flags & SVTYPEMASK) < SVt_PVIV) |
7327 | sv_upgrade(sv, SVt_IV); | |
7328 | (void)SvIOK_only(sv); | |
7329 | SvIVX(sv) = 1; | |
79072805 LW |
7330 | return; |
7331 | } | |
463ee0b2 | 7332 | d = SvPVX(sv); |
79072805 LW |
7333 | while (isALPHA(*d)) d++; |
7334 | while (isDIGIT(*d)) d++; | |
7335 | if (*d) { | |
28e5dec8 | 7336 | #ifdef PERL_PRESERVE_IVUV |
d1be9408 | 7337 | /* Got to punt this as an integer if needs be, but we don't issue |
28e5dec8 JH |
7338 | warnings. Probably ought to make the sv_iv_please() that does |
7339 | the conversion if possible, and silently. */ | |
c2988b20 | 7340 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
7341 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
7342 | /* Need to try really hard to see if it's an integer. | |
7343 | 9.22337203685478e+18 is an integer. | |
7344 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
7345 | so $a="9.22337203685478e+18"; $a+0; $a++ | |
7346 | needs to be the same as $a="9.22337203685478e+18"; $a++ | |
7347 | or we go insane. */ | |
d460ef45 | 7348 | |
28e5dec8 JH |
7349 | (void) sv_2iv(sv); |
7350 | if (SvIOK(sv)) | |
7351 | goto oops_its_int; | |
7352 | ||
7353 | /* sv_2iv *should* have made this an NV */ | |
7354 | if (flags & SVp_NOK) { | |
7355 | (void)SvNOK_only(sv); | |
7356 | SvNVX(sv) += 1.0; | |
7357 | return; | |
7358 | } | |
7359 | /* I don't think we can get here. Maybe I should assert this | |
7360 | And if we do get here I suspect that sv_setnv will croak. NWC | |
7361 | Fall through. */ | |
7362 | #if defined(USE_LONG_DOUBLE) | |
7363 | 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", | |
7364 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); | |
7365 | #else | |
1779d84d | 7366 | DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_inc punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%"NVgf"\n", |
28e5dec8 JH |
7367 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); |
7368 | #endif | |
7369 | } | |
7370 | #endif /* PERL_PRESERVE_IVUV */ | |
7371 | sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); | |
79072805 LW |
7372 | return; |
7373 | } | |
7374 | d--; | |
463ee0b2 | 7375 | while (d >= SvPVX(sv)) { |
79072805 LW |
7376 | if (isDIGIT(*d)) { |
7377 | if (++*d <= '9') | |
7378 | return; | |
7379 | *(d--) = '0'; | |
7380 | } | |
7381 | else { | |
9d116dd7 JH |
7382 | #ifdef EBCDIC |
7383 | /* MKS: The original code here died if letters weren't consecutive. | |
7384 | * at least it didn't have to worry about non-C locales. The | |
7385 | * new code assumes that ('z'-'a')==('Z'-'A'), letters are | |
1c846c1f | 7386 | * arranged in order (although not consecutively) and that only |
9d116dd7 JH |
7387 | * [A-Za-z] are accepted by isALPHA in the C locale. |
7388 | */ | |
7389 | if (*d != 'z' && *d != 'Z') { | |
7390 | do { ++*d; } while (!isALPHA(*d)); | |
7391 | return; | |
7392 | } | |
7393 | *(d--) -= 'z' - 'a'; | |
7394 | #else | |
79072805 LW |
7395 | ++*d; |
7396 | if (isALPHA(*d)) | |
7397 | return; | |
7398 | *(d--) -= 'z' - 'a' + 1; | |
9d116dd7 | 7399 | #endif |
79072805 LW |
7400 | } |
7401 | } | |
7402 | /* oh,oh, the number grew */ | |
7403 | SvGROW(sv, SvCUR(sv) + 2); | |
7404 | SvCUR(sv)++; | |
463ee0b2 | 7405 | for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--) |
79072805 LW |
7406 | *d = d[-1]; |
7407 | if (isDIGIT(d[1])) | |
7408 | *d = '1'; | |
7409 | else | |
7410 | *d = d[1]; | |
7411 | } | |
7412 | ||
954c1994 GS |
7413 | /* |
7414 | =for apidoc sv_dec | |
7415 | ||
645c22ef DM |
7416 | Auto-decrement of the value in the SV, doing string to numeric conversion |
7417 | if necessary. Handles 'get' magic. | |
954c1994 GS |
7418 | |
7419 | =cut | |
7420 | */ | |
7421 | ||
79072805 | 7422 | void |
864dbfa3 | 7423 | Perl_sv_dec(pTHX_ register SV *sv) |
79072805 | 7424 | { |
463ee0b2 LW |
7425 | int flags; |
7426 | ||
79072805 LW |
7427 | if (!sv) |
7428 | return; | |
b23a5f78 GB |
7429 | if (SvGMAGICAL(sv)) |
7430 | mg_get(sv); | |
ed6116ce | 7431 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
7432 | if (SvIsCOW(sv)) |
7433 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 7434 | if (SvREADONLY(sv)) { |
923e4eb5 | 7435 | if (IN_PERL_RUNTIME) |
cea2e8a9 | 7436 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 7437 | } |
a0d0e21e | 7438 | if (SvROK(sv)) { |
b5be31e9 | 7439 | IV i; |
9e7bc3e8 JD |
7440 | if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) |
7441 | return; | |
56431972 | 7442 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
7443 | sv_unref(sv); |
7444 | sv_setiv(sv, i); | |
a0d0e21e | 7445 | } |
ed6116ce | 7446 | } |
28e5dec8 JH |
7447 | /* Unlike sv_inc we don't have to worry about string-never-numbers |
7448 | and keeping them magic. But we mustn't warn on punting */ | |
8990e307 | 7449 | flags = SvFLAGS(sv); |
28e5dec8 JH |
7450 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { |
7451 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 7452 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 7453 | oops_its_int: |
59d8ce62 | 7454 | #endif |
25da4f38 IZ |
7455 | if (SvIsUV(sv)) { |
7456 | if (SvUVX(sv) == 0) { | |
7457 | (void)SvIOK_only(sv); | |
7458 | SvIVX(sv) = -1; | |
7459 | } | |
7460 | else { | |
7461 | (void)SvIOK_only_UV(sv); | |
7462 | --SvUVX(sv); | |
1c846c1f | 7463 | } |
25da4f38 IZ |
7464 | } else { |
7465 | if (SvIVX(sv) == IV_MIN) | |
65202027 | 7466 | sv_setnv(sv, (NV)IV_MIN - 1.0); |
25da4f38 IZ |
7467 | else { |
7468 | (void)SvIOK_only(sv); | |
7469 | --SvIVX(sv); | |
1c846c1f | 7470 | } |
55497cff | 7471 | } |
7472 | return; | |
7473 | } | |
28e5dec8 JH |
7474 | if (flags & SVp_NOK) { |
7475 | SvNVX(sv) -= 1.0; | |
7476 | (void)SvNOK_only(sv); | |
7477 | return; | |
7478 | } | |
8990e307 | 7479 | if (!(flags & SVp_POK)) { |
4633a7c4 LW |
7480 | if ((flags & SVTYPEMASK) < SVt_PVNV) |
7481 | sv_upgrade(sv, SVt_NV); | |
463ee0b2 | 7482 | SvNVX(sv) = -1.0; |
a0d0e21e | 7483 | (void)SvNOK_only(sv); |
79072805 LW |
7484 | return; |
7485 | } | |
28e5dec8 JH |
7486 | #ifdef PERL_PRESERVE_IVUV |
7487 | { | |
c2988b20 | 7488 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
7489 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
7490 | /* Need to try really hard to see if it's an integer. | |
7491 | 9.22337203685478e+18 is an integer. | |
7492 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
7493 | so $a="9.22337203685478e+18"; $a+0; $a-- | |
7494 | needs to be the same as $a="9.22337203685478e+18"; $a-- | |
7495 | or we go insane. */ | |
d460ef45 | 7496 | |
28e5dec8 JH |
7497 | (void) sv_2iv(sv); |
7498 | if (SvIOK(sv)) | |
7499 | goto oops_its_int; | |
7500 | ||
7501 | /* sv_2iv *should* have made this an NV */ | |
7502 | if (flags & SVp_NOK) { | |
7503 | (void)SvNOK_only(sv); | |
7504 | SvNVX(sv) -= 1.0; | |
7505 | return; | |
7506 | } | |
7507 | /* I don't think we can get here. Maybe I should assert this | |
7508 | And if we do get here I suspect that sv_setnv will croak. NWC | |
7509 | Fall through. */ | |
7510 | #if defined(USE_LONG_DOUBLE) | |
7511 | 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", | |
7512 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); | |
7513 | #else | |
1779d84d | 7514 | DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_dec punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%"NVgf"\n", |
28e5dec8 JH |
7515 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); |
7516 | #endif | |
7517 | } | |
7518 | } | |
7519 | #endif /* PERL_PRESERVE_IVUV */ | |
097ee67d | 7520 | sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */ |
79072805 LW |
7521 | } |
7522 | ||
954c1994 GS |
7523 | /* |
7524 | =for apidoc sv_mortalcopy | |
7525 | ||
645c22ef | 7526 | Creates a new SV which is a copy of the original SV (using C<sv_setsv>). |
d4236ebc DM |
7527 | The new SV is marked as mortal. It will be destroyed "soon", either by an |
7528 | explicit call to FREETMPS, or by an implicit call at places such as | |
7529 | statement boundaries. See also C<sv_newmortal> and C<sv_2mortal>. | |
954c1994 GS |
7530 | |
7531 | =cut | |
7532 | */ | |
7533 | ||
79072805 LW |
7534 | /* Make a string that will exist for the duration of the expression |
7535 | * evaluation. Actually, it may have to last longer than that, but | |
7536 | * hopefully we won't free it until it has been assigned to a | |
7537 | * permanent location. */ | |
7538 | ||
7539 | SV * | |
864dbfa3 | 7540 | Perl_sv_mortalcopy(pTHX_ SV *oldstr) |
79072805 | 7541 | { |
463ee0b2 | 7542 | register SV *sv; |
b881518d | 7543 | |
4561caa4 | 7544 | new_SV(sv); |
79072805 | 7545 | sv_setsv(sv,oldstr); |
677b06e3 GS |
7546 | EXTEND_MORTAL(1); |
7547 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 LW |
7548 | SvTEMP_on(sv); |
7549 | return sv; | |
7550 | } | |
7551 | ||
954c1994 GS |
7552 | /* |
7553 | =for apidoc sv_newmortal | |
7554 | ||
645c22ef | 7555 | Creates a new null SV which is mortal. The reference count of the SV is |
d4236ebc DM |
7556 | set to 1. It will be destroyed "soon", either by an explicit call to |
7557 | FREETMPS, or by an implicit call at places such as statement boundaries. | |
7558 | See also C<sv_mortalcopy> and C<sv_2mortal>. | |
954c1994 GS |
7559 | |
7560 | =cut | |
7561 | */ | |
7562 | ||
8990e307 | 7563 | SV * |
864dbfa3 | 7564 | Perl_sv_newmortal(pTHX) |
8990e307 LW |
7565 | { |
7566 | register SV *sv; | |
7567 | ||
4561caa4 | 7568 | new_SV(sv); |
8990e307 | 7569 | SvFLAGS(sv) = SVs_TEMP; |
677b06e3 GS |
7570 | EXTEND_MORTAL(1); |
7571 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
79072805 LW |
7572 | return sv; |
7573 | } | |
7574 | ||
954c1994 GS |
7575 | /* |
7576 | =for apidoc sv_2mortal | |
7577 | ||
d4236ebc DM |
7578 | Marks an existing SV as mortal. The SV will be destroyed "soon", either |
7579 | by an explicit call to FREETMPS, or by an implicit call at places such as | |
37d2ac18 NC |
7580 | statement boundaries. SvTEMP() is turned on which means that the SV's |
7581 | string buffer can be "stolen" if this SV is copied. See also C<sv_newmortal> | |
7582 | and C<sv_mortalcopy>. | |
954c1994 GS |
7583 | |
7584 | =cut | |
7585 | */ | |
7586 | ||
79072805 | 7587 | SV * |
864dbfa3 | 7588 | Perl_sv_2mortal(pTHX_ register SV *sv) |
79072805 LW |
7589 | { |
7590 | if (!sv) | |
7591 | return sv; | |
d689ffdd | 7592 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) |
11162842 | 7593 | return sv; |
677b06e3 GS |
7594 | EXTEND_MORTAL(1); |
7595 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 | 7596 | SvTEMP_on(sv); |
79072805 LW |
7597 | return sv; |
7598 | } | |
7599 | ||
954c1994 GS |
7600 | /* |
7601 | =for apidoc newSVpv | |
7602 | ||
7603 | Creates a new SV and copies a string into it. The reference count for the | |
7604 | SV is set to 1. If C<len> is zero, Perl will compute the length using | |
7605 | strlen(). For efficiency, consider using C<newSVpvn> instead. | |
7606 | ||
7607 | =cut | |
7608 | */ | |
7609 | ||
79072805 | 7610 | SV * |
864dbfa3 | 7611 | Perl_newSVpv(pTHX_ const char *s, STRLEN len) |
79072805 | 7612 | { |
463ee0b2 | 7613 | register SV *sv; |
79072805 | 7614 | |
4561caa4 | 7615 | new_SV(sv); |
79072805 LW |
7616 | if (!len) |
7617 | len = strlen(s); | |
7618 | sv_setpvn(sv,s,len); | |
7619 | return sv; | |
7620 | } | |
7621 | ||
954c1994 GS |
7622 | /* |
7623 | =for apidoc newSVpvn | |
7624 | ||
7625 | Creates a new SV and copies a string into it. The reference count for the | |
1c846c1f | 7626 | SV is set to 1. Note that if C<len> is zero, Perl will create a zero length |
954c1994 | 7627 | string. You are responsible for ensuring that the source string is at least |
9e09f5f2 | 7628 | C<len> bytes long. If the C<s> argument is NULL the new SV will be undefined. |
954c1994 GS |
7629 | |
7630 | =cut | |
7631 | */ | |
7632 | ||
9da1e3b5 | 7633 | SV * |
864dbfa3 | 7634 | Perl_newSVpvn(pTHX_ const char *s, STRLEN len) |
9da1e3b5 MUN |
7635 | { |
7636 | register SV *sv; | |
7637 | ||
7638 | new_SV(sv); | |
9da1e3b5 MUN |
7639 | sv_setpvn(sv,s,len); |
7640 | return sv; | |
7641 | } | |
7642 | ||
1c846c1f NIS |
7643 | /* |
7644 | =for apidoc newSVpvn_share | |
7645 | ||
645c22ef DM |
7646 | Creates a new SV with its SvPVX pointing to a shared string in the string |
7647 | table. If the string does not already exist in the table, it is created | |
7648 | first. Turns on READONLY and FAKE. The string's hash is stored in the UV | |
7649 | slot of the SV; if the C<hash> parameter is non-zero, that value is used; | |
7650 | otherwise the hash is computed. The idea here is that as the string table | |
7651 | is used for shared hash keys these strings will have SvPVX == HeKEY and | |
7652 | hash lookup will avoid string compare. | |
1c846c1f NIS |
7653 | |
7654 | =cut | |
7655 | */ | |
7656 | ||
7657 | SV * | |
c3654f1a | 7658 | Perl_newSVpvn_share(pTHX_ const char *src, I32 len, U32 hash) |
1c846c1f NIS |
7659 | { |
7660 | register SV *sv; | |
c3654f1a IH |
7661 | bool is_utf8 = FALSE; |
7662 | if (len < 0) { | |
77caf834 | 7663 | STRLEN tmplen = -len; |
c3654f1a | 7664 | is_utf8 = TRUE; |
75a54232 JH |
7665 | /* See the note in hv.c:hv_fetch() --jhi */ |
7666 | src = (char*)bytes_from_utf8((U8*)src, &tmplen, &is_utf8); | |
7667 | len = tmplen; | |
7668 | } | |
1c846c1f | 7669 | if (!hash) |
5afd6d42 | 7670 | PERL_HASH(hash, src, len); |
1c846c1f NIS |
7671 | new_SV(sv); |
7672 | sv_upgrade(sv, SVt_PVIV); | |
c3654f1a | 7673 | SvPVX(sv) = sharepvn(src, is_utf8?-len:len, hash); |
1c846c1f NIS |
7674 | SvCUR(sv) = len; |
7675 | SvUVX(sv) = hash; | |
7676 | SvLEN(sv) = 0; | |
7677 | SvREADONLY_on(sv); | |
7678 | SvFAKE_on(sv); | |
7679 | SvPOK_on(sv); | |
c3654f1a IH |
7680 | if (is_utf8) |
7681 | SvUTF8_on(sv); | |
1c846c1f NIS |
7682 | return sv; |
7683 | } | |
7684 | ||
645c22ef | 7685 | |
cea2e8a9 | 7686 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
7687 | |
7688 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
7689 | * version of the main function, (which may itself be aliased to us). | |
7690 | * Don't access this version directly. | |
7691 | */ | |
7692 | ||
46fc3d4c | 7693 | SV * |
cea2e8a9 | 7694 | Perl_newSVpvf_nocontext(const char* pat, ...) |
46fc3d4c | 7695 | { |
cea2e8a9 | 7696 | dTHX; |
46fc3d4c | 7697 | register SV *sv; |
7698 | va_list args; | |
46fc3d4c | 7699 | va_start(args, pat); |
c5be433b | 7700 | sv = vnewSVpvf(pat, &args); |
46fc3d4c | 7701 | va_end(args); |
7702 | return sv; | |
7703 | } | |
cea2e8a9 | 7704 | #endif |
46fc3d4c | 7705 | |
954c1994 GS |
7706 | /* |
7707 | =for apidoc newSVpvf | |
7708 | ||
645c22ef | 7709 | Creates a new SV and initializes it with the string formatted like |
954c1994 GS |
7710 | C<sprintf>. |
7711 | ||
7712 | =cut | |
7713 | */ | |
7714 | ||
cea2e8a9 GS |
7715 | SV * |
7716 | Perl_newSVpvf(pTHX_ const char* pat, ...) | |
7717 | { | |
7718 | register SV *sv; | |
7719 | va_list args; | |
cea2e8a9 | 7720 | va_start(args, pat); |
c5be433b | 7721 | sv = vnewSVpvf(pat, &args); |
cea2e8a9 GS |
7722 | va_end(args); |
7723 | return sv; | |
7724 | } | |
46fc3d4c | 7725 | |
645c22ef DM |
7726 | /* backend for newSVpvf() and newSVpvf_nocontext() */ |
7727 | ||
79072805 | 7728 | SV * |
c5be433b GS |
7729 | Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args) |
7730 | { | |
7731 | register SV *sv; | |
7732 | new_SV(sv); | |
7733 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
7734 | return sv; | |
7735 | } | |
7736 | ||
954c1994 GS |
7737 | /* |
7738 | =for apidoc newSVnv | |
7739 | ||
7740 | Creates a new SV and copies a floating point value into it. | |
7741 | The reference count for the SV is set to 1. | |
7742 | ||
7743 | =cut | |
7744 | */ | |
7745 | ||
c5be433b | 7746 | SV * |
65202027 | 7747 | Perl_newSVnv(pTHX_ NV n) |
79072805 | 7748 | { |
463ee0b2 | 7749 | register SV *sv; |
79072805 | 7750 | |
4561caa4 | 7751 | new_SV(sv); |
79072805 LW |
7752 | sv_setnv(sv,n); |
7753 | return sv; | |
7754 | } | |
7755 | ||
954c1994 GS |
7756 | /* |
7757 | =for apidoc newSViv | |
7758 | ||
7759 | Creates a new SV and copies an integer into it. The reference count for the | |
7760 | SV is set to 1. | |
7761 | ||
7762 | =cut | |
7763 | */ | |
7764 | ||
79072805 | 7765 | SV * |
864dbfa3 | 7766 | Perl_newSViv(pTHX_ IV i) |
79072805 | 7767 | { |
463ee0b2 | 7768 | register SV *sv; |
79072805 | 7769 | |
4561caa4 | 7770 | new_SV(sv); |
79072805 LW |
7771 | sv_setiv(sv,i); |
7772 | return sv; | |
7773 | } | |
7774 | ||
954c1994 | 7775 | /* |
1a3327fb JH |
7776 | =for apidoc newSVuv |
7777 | ||
7778 | Creates a new SV and copies an unsigned integer into it. | |
7779 | The reference count for the SV is set to 1. | |
7780 | ||
7781 | =cut | |
7782 | */ | |
7783 | ||
7784 | SV * | |
7785 | Perl_newSVuv(pTHX_ UV u) | |
7786 | { | |
7787 | register SV *sv; | |
7788 | ||
7789 | new_SV(sv); | |
7790 | sv_setuv(sv,u); | |
7791 | return sv; | |
7792 | } | |
7793 | ||
7794 | /* | |
954c1994 GS |
7795 | =for apidoc newRV_noinc |
7796 | ||
7797 | Creates an RV wrapper for an SV. The reference count for the original | |
7798 | SV is B<not> incremented. | |
7799 | ||
7800 | =cut | |
7801 | */ | |
7802 | ||
2304df62 | 7803 | SV * |
864dbfa3 | 7804 | Perl_newRV_noinc(pTHX_ SV *tmpRef) |
2304df62 AD |
7805 | { |
7806 | register SV *sv; | |
7807 | ||
4561caa4 | 7808 | new_SV(sv); |
2304df62 | 7809 | sv_upgrade(sv, SVt_RV); |
76e3520e | 7810 | SvTEMP_off(tmpRef); |
d689ffdd | 7811 | SvRV(sv) = tmpRef; |
2304df62 | 7812 | SvROK_on(sv); |
2304df62 AD |
7813 | return sv; |
7814 | } | |
7815 | ||
ff276b08 | 7816 | /* newRV_inc is the official function name to use now. |
645c22ef DM |
7817 | * newRV_inc is in fact #defined to newRV in sv.h |
7818 | */ | |
7819 | ||
5f05dabc | 7820 | SV * |
864dbfa3 | 7821 | Perl_newRV(pTHX_ SV *tmpRef) |
5f05dabc | 7822 | { |
5f6447b6 | 7823 | return newRV_noinc(SvREFCNT_inc(tmpRef)); |
5f05dabc | 7824 | } |
5f05dabc | 7825 | |
954c1994 GS |
7826 | /* |
7827 | =for apidoc newSVsv | |
7828 | ||
7829 | Creates a new SV which is an exact duplicate of the original SV. | |
645c22ef | 7830 | (Uses C<sv_setsv>). |
954c1994 GS |
7831 | |
7832 | =cut | |
7833 | */ | |
7834 | ||
79072805 | 7835 | SV * |
864dbfa3 | 7836 | Perl_newSVsv(pTHX_ register SV *old) |
79072805 | 7837 | { |
463ee0b2 | 7838 | register SV *sv; |
79072805 LW |
7839 | |
7840 | if (!old) | |
7841 | return Nullsv; | |
8990e307 | 7842 | if (SvTYPE(old) == SVTYPEMASK) { |
0453d815 | 7843 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 7844 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "semi-panic: attempt to dup freed string"); |
79072805 LW |
7845 | return Nullsv; |
7846 | } | |
4561caa4 | 7847 | new_SV(sv); |
ff68c719 | 7848 | if (SvTEMP(old)) { |
7849 | SvTEMP_off(old); | |
463ee0b2 | 7850 | sv_setsv(sv,old); |
ff68c719 | 7851 | SvTEMP_on(old); |
79072805 LW |
7852 | } |
7853 | else | |
463ee0b2 LW |
7854 | sv_setsv(sv,old); |
7855 | return sv; | |
79072805 LW |
7856 | } |
7857 | ||
645c22ef DM |
7858 | /* |
7859 | =for apidoc sv_reset | |
7860 | ||
7861 | Underlying implementation for the C<reset> Perl function. | |
7862 | Note that the perl-level function is vaguely deprecated. | |
7863 | ||
7864 | =cut | |
7865 | */ | |
7866 | ||
79072805 | 7867 | void |
864dbfa3 | 7868 | Perl_sv_reset(pTHX_ register char *s, HV *stash) |
79072805 LW |
7869 | { |
7870 | register HE *entry; | |
7871 | register GV *gv; | |
7872 | register SV *sv; | |
7873 | register I32 i; | |
7874 | register PMOP *pm; | |
7875 | register I32 max; | |
4802d5d7 | 7876 | char todo[PERL_UCHAR_MAX+1]; |
79072805 | 7877 | |
49d8d3a1 MB |
7878 | if (!stash) |
7879 | return; | |
7880 | ||
79072805 LW |
7881 | if (!*s) { /* reset ?? searches */ |
7882 | for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) { | |
48c036b1 | 7883 | pm->op_pmdynflags &= ~PMdf_USED; |
79072805 LW |
7884 | } |
7885 | return; | |
7886 | } | |
7887 | ||
7888 | /* reset variables */ | |
7889 | ||
7890 | if (!HvARRAY(stash)) | |
7891 | return; | |
463ee0b2 LW |
7892 | |
7893 | Zero(todo, 256, char); | |
79072805 | 7894 | while (*s) { |
4802d5d7 | 7895 | i = (unsigned char)*s; |
79072805 LW |
7896 | if (s[1] == '-') { |
7897 | s += 2; | |
7898 | } | |
4802d5d7 | 7899 | max = (unsigned char)*s++; |
79072805 | 7900 | for ( ; i <= max; i++) { |
463ee0b2 LW |
7901 | todo[i] = 1; |
7902 | } | |
a0d0e21e | 7903 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
79072805 | 7904 | for (entry = HvARRAY(stash)[i]; |
9e35f4b3 GS |
7905 | entry; |
7906 | entry = HeNEXT(entry)) | |
7907 | { | |
1edc1566 | 7908 | if (!todo[(U8)*HeKEY(entry)]) |
463ee0b2 | 7909 | continue; |
1edc1566 | 7910 | gv = (GV*)HeVAL(entry); |
79072805 | 7911 | sv = GvSV(gv); |
9e35f4b3 GS |
7912 | if (SvTHINKFIRST(sv)) { |
7913 | if (!SvREADONLY(sv) && SvROK(sv)) | |
7914 | sv_unref(sv); | |
7915 | continue; | |
7916 | } | |
a0d0e21e | 7917 | (void)SvOK_off(sv); |
79072805 LW |
7918 | if (SvTYPE(sv) >= SVt_PV) { |
7919 | SvCUR_set(sv, 0); | |
463ee0b2 LW |
7920 | if (SvPVX(sv) != Nullch) |
7921 | *SvPVX(sv) = '\0'; | |
44a8e56a | 7922 | SvTAINT(sv); |
79072805 LW |
7923 | } |
7924 | if (GvAV(gv)) { | |
7925 | av_clear(GvAV(gv)); | |
7926 | } | |
44a8e56a | 7927 | if (GvHV(gv) && !HvNAME(GvHV(gv))) { |
463ee0b2 | 7928 | hv_clear(GvHV(gv)); |
2f42fcb0 | 7929 | #ifndef PERL_MICRO |
fa6a1c44 | 7930 | #ifdef USE_ENVIRON_ARRAY |
4efc5df6 GS |
7931 | if (gv == PL_envgv |
7932 | # ifdef USE_ITHREADS | |
7933 | && PL_curinterp == aTHX | |
7934 | # endif | |
7935 | ) | |
7936 | { | |
79072805 | 7937 | environ[0] = Nullch; |
4efc5df6 | 7938 | } |
a0d0e21e | 7939 | #endif |
2f42fcb0 | 7940 | #endif /* !PERL_MICRO */ |
79072805 LW |
7941 | } |
7942 | } | |
7943 | } | |
7944 | } | |
7945 | } | |
7946 | ||
645c22ef DM |
7947 | /* |
7948 | =for apidoc sv_2io | |
7949 | ||
7950 | Using various gambits, try to get an IO from an SV: the IO slot if its a | |
7951 | GV; or the recursive result if we're an RV; or the IO slot of the symbol | |
7952 | named after the PV if we're a string. | |
7953 | ||
7954 | =cut | |
7955 | */ | |
7956 | ||
46fc3d4c | 7957 | IO* |
864dbfa3 | 7958 | Perl_sv_2io(pTHX_ SV *sv) |
46fc3d4c | 7959 | { |
7960 | IO* io; | |
7961 | GV* gv; | |
2d8e6c8d | 7962 | STRLEN n_a; |
46fc3d4c | 7963 | |
7964 | switch (SvTYPE(sv)) { | |
7965 | case SVt_PVIO: | |
7966 | io = (IO*)sv; | |
7967 | break; | |
7968 | case SVt_PVGV: | |
7969 | gv = (GV*)sv; | |
7970 | io = GvIO(gv); | |
7971 | if (!io) | |
cea2e8a9 | 7972 | Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv)); |
46fc3d4c | 7973 | break; |
7974 | default: | |
7975 | if (!SvOK(sv)) | |
cea2e8a9 | 7976 | Perl_croak(aTHX_ PL_no_usym, "filehandle"); |
46fc3d4c | 7977 | if (SvROK(sv)) |
7978 | return sv_2io(SvRV(sv)); | |
2d8e6c8d | 7979 | gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO); |
46fc3d4c | 7980 | if (gv) |
7981 | io = GvIO(gv); | |
7982 | else | |
7983 | io = 0; | |
7984 | if (!io) | |
35c1215d | 7985 | Perl_croak(aTHX_ "Bad filehandle: %"SVf, sv); |
46fc3d4c | 7986 | break; |
7987 | } | |
7988 | return io; | |
7989 | } | |
7990 | ||
645c22ef DM |
7991 | /* |
7992 | =for apidoc sv_2cv | |
7993 | ||
7994 | Using various gambits, try to get a CV from an SV; in addition, try if | |
7995 | possible to set C<*st> and C<*gvp> to the stash and GV associated with it. | |
7996 | ||
7997 | =cut | |
7998 | */ | |
7999 | ||
79072805 | 8000 | CV * |
864dbfa3 | 8001 | Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref) |
79072805 | 8002 | { |
c04a4dfe JH |
8003 | GV *gv = Nullgv; |
8004 | CV *cv = Nullcv; | |
2d8e6c8d | 8005 | STRLEN n_a; |
79072805 LW |
8006 | |
8007 | if (!sv) | |
93a17b20 | 8008 | return *gvp = Nullgv, Nullcv; |
79072805 | 8009 | switch (SvTYPE(sv)) { |
79072805 LW |
8010 | case SVt_PVCV: |
8011 | *st = CvSTASH(sv); | |
8012 | *gvp = Nullgv; | |
8013 | return (CV*)sv; | |
8014 | case SVt_PVHV: | |
8015 | case SVt_PVAV: | |
8016 | *gvp = Nullgv; | |
8017 | return Nullcv; | |
8990e307 LW |
8018 | case SVt_PVGV: |
8019 | gv = (GV*)sv; | |
a0d0e21e | 8020 | *gvp = gv; |
8990e307 LW |
8021 | *st = GvESTASH(gv); |
8022 | goto fix_gv; | |
8023 | ||
79072805 | 8024 | default: |
a0d0e21e LW |
8025 | if (SvGMAGICAL(sv)) |
8026 | mg_get(sv); | |
8027 | if (SvROK(sv)) { | |
f5284f61 IZ |
8028 | SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */ |
8029 | tryAMAGICunDEREF(to_cv); | |
8030 | ||
62f274bf GS |
8031 | sv = SvRV(sv); |
8032 | if (SvTYPE(sv) == SVt_PVCV) { | |
8033 | cv = (CV*)sv; | |
8034 | *gvp = Nullgv; | |
8035 | *st = CvSTASH(cv); | |
8036 | return cv; | |
8037 | } | |
8038 | else if(isGV(sv)) | |
8039 | gv = (GV*)sv; | |
8040 | else | |
cea2e8a9 | 8041 | Perl_croak(aTHX_ "Not a subroutine reference"); |
a0d0e21e | 8042 | } |
62f274bf | 8043 | else if (isGV(sv)) |
79072805 LW |
8044 | gv = (GV*)sv; |
8045 | else | |
2d8e6c8d | 8046 | gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV); |
79072805 LW |
8047 | *gvp = gv; |
8048 | if (!gv) | |
8049 | return Nullcv; | |
8050 | *st = GvESTASH(gv); | |
8990e307 | 8051 | fix_gv: |
8ebc5c01 | 8052 | if (lref && !GvCVu(gv)) { |
4633a7c4 | 8053 | SV *tmpsv; |
748a9306 | 8054 | ENTER; |
4633a7c4 | 8055 | tmpsv = NEWSV(704,0); |
16660edb | 8056 | gv_efullname3(tmpsv, gv, Nullch); |
f6ec51f7 GS |
8057 | /* XXX this is probably not what they think they're getting. |
8058 | * It has the same effect as "sub name;", i.e. just a forward | |
8059 | * declaration! */ | |
774d564b | 8060 | newSUB(start_subparse(FALSE, 0), |
4633a7c4 LW |
8061 | newSVOP(OP_CONST, 0, tmpsv), |
8062 | Nullop, | |
8990e307 | 8063 | Nullop); |
748a9306 | 8064 | LEAVE; |
8ebc5c01 | 8065 | if (!GvCVu(gv)) |
35c1215d NC |
8066 | Perl_croak(aTHX_ "Unable to create sub named \"%"SVf"\"", |
8067 | sv); | |
8990e307 | 8068 | } |
8ebc5c01 | 8069 | return GvCVu(gv); |
79072805 LW |
8070 | } |
8071 | } | |
8072 | ||
c461cf8f JH |
8073 | /* |
8074 | =for apidoc sv_true | |
8075 | ||
8076 | Returns true if the SV has a true value by Perl's rules. | |
645c22ef DM |
8077 | Use the C<SvTRUE> macro instead, which may call C<sv_true()> or may |
8078 | instead use an in-line version. | |
c461cf8f JH |
8079 | |
8080 | =cut | |
8081 | */ | |
8082 | ||
79072805 | 8083 | I32 |
864dbfa3 | 8084 | Perl_sv_true(pTHX_ register SV *sv) |
79072805 | 8085 | { |
8990e307 LW |
8086 | if (!sv) |
8087 | return 0; | |
79072805 | 8088 | if (SvPOK(sv)) { |
4e35701f NIS |
8089 | register XPV* tXpv; |
8090 | if ((tXpv = (XPV*)SvANY(sv)) && | |
c2f1de04 | 8091 | (tXpv->xpv_cur > 1 || |
4e35701f | 8092 | (tXpv->xpv_cur && *tXpv->xpv_pv != '0'))) |
79072805 LW |
8093 | return 1; |
8094 | else | |
8095 | return 0; | |
8096 | } | |
8097 | else { | |
8098 | if (SvIOK(sv)) | |
463ee0b2 | 8099 | return SvIVX(sv) != 0; |
79072805 LW |
8100 | else { |
8101 | if (SvNOK(sv)) | |
463ee0b2 | 8102 | return SvNVX(sv) != 0.0; |
79072805 | 8103 | else |
463ee0b2 | 8104 | return sv_2bool(sv); |
79072805 LW |
8105 | } |
8106 | } | |
8107 | } | |
79072805 | 8108 | |
645c22ef DM |
8109 | /* |
8110 | =for apidoc sv_iv | |
8111 | ||
8112 | A private implementation of the C<SvIVx> macro for compilers which can't | |
8113 | cope with complex macro expressions. Always use the macro instead. | |
8114 | ||
8115 | =cut | |
8116 | */ | |
8117 | ||
ff68c719 | 8118 | IV |
864dbfa3 | 8119 | Perl_sv_iv(pTHX_ register SV *sv) |
85e6fe83 | 8120 | { |
25da4f38 IZ |
8121 | if (SvIOK(sv)) { |
8122 | if (SvIsUV(sv)) | |
8123 | return (IV)SvUVX(sv); | |
ff68c719 | 8124 | return SvIVX(sv); |
25da4f38 | 8125 | } |
ff68c719 | 8126 | return sv_2iv(sv); |
85e6fe83 | 8127 | } |
85e6fe83 | 8128 | |
645c22ef DM |
8129 | /* |
8130 | =for apidoc sv_uv | |
8131 | ||
8132 | A private implementation of the C<SvUVx> macro for compilers which can't | |
8133 | cope with complex macro expressions. Always use the macro instead. | |
8134 | ||
8135 | =cut | |
8136 | */ | |
8137 | ||
ff68c719 | 8138 | UV |
864dbfa3 | 8139 | Perl_sv_uv(pTHX_ register SV *sv) |
ff68c719 | 8140 | { |
25da4f38 IZ |
8141 | if (SvIOK(sv)) { |
8142 | if (SvIsUV(sv)) | |
8143 | return SvUVX(sv); | |
8144 | return (UV)SvIVX(sv); | |
8145 | } | |
ff68c719 | 8146 | return sv_2uv(sv); |
8147 | } | |
85e6fe83 | 8148 | |
645c22ef DM |
8149 | /* |
8150 | =for apidoc sv_nv | |
8151 | ||
8152 | A private implementation of the C<SvNVx> macro for compilers which can't | |
8153 | cope with complex macro expressions. Always use the macro instead. | |
8154 | ||
8155 | =cut | |
8156 | */ | |
8157 | ||
65202027 | 8158 | NV |
864dbfa3 | 8159 | Perl_sv_nv(pTHX_ register SV *sv) |
79072805 | 8160 | { |
ff68c719 | 8161 | if (SvNOK(sv)) |
8162 | return SvNVX(sv); | |
8163 | return sv_2nv(sv); | |
79072805 | 8164 | } |
79072805 | 8165 | |
09540bc3 JH |
8166 | /* sv_pv() is now a macro using SvPV_nolen(); |
8167 | * this function provided for binary compatibility only | |
8168 | */ | |
8169 | ||
8170 | char * | |
8171 | Perl_sv_pv(pTHX_ SV *sv) | |
8172 | { | |
8173 | STRLEN n_a; | |
8174 | ||
8175 | if (SvPOK(sv)) | |
8176 | return SvPVX(sv); | |
8177 | ||
8178 | return sv_2pv(sv, &n_a); | |
8179 | } | |
8180 | ||
645c22ef DM |
8181 | /* |
8182 | =for apidoc sv_pv | |
8183 | ||
baca2b92 | 8184 | Use the C<SvPV_nolen> macro instead |
645c22ef | 8185 | |
645c22ef DM |
8186 | =for apidoc sv_pvn |
8187 | ||
8188 | A private implementation of the C<SvPV> macro for compilers which can't | |
8189 | cope with complex macro expressions. Always use the macro instead. | |
8190 | ||
8191 | =cut | |
8192 | */ | |
8193 | ||
1fa8b10d | 8194 | char * |
864dbfa3 | 8195 | Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp) |
79072805 | 8196 | { |
85e6fe83 LW |
8197 | if (SvPOK(sv)) { |
8198 | *lp = SvCUR(sv); | |
a0d0e21e | 8199 | return SvPVX(sv); |
85e6fe83 | 8200 | } |
463ee0b2 | 8201 | return sv_2pv(sv, lp); |
79072805 | 8202 | } |
79072805 | 8203 | |
6e9d1081 NC |
8204 | |
8205 | char * | |
8206 | Perl_sv_pvn_nomg(pTHX_ register SV *sv, STRLEN *lp) | |
8207 | { | |
8208 | if (SvPOK(sv)) { | |
8209 | *lp = SvCUR(sv); | |
8210 | return SvPVX(sv); | |
8211 | } | |
8212 | return sv_2pv_flags(sv, lp, 0); | |
8213 | } | |
8214 | ||
09540bc3 JH |
8215 | /* sv_pvn_force() is now a macro using Perl_sv_pvn_force_flags(); |
8216 | * this function provided for binary compatibility only | |
8217 | */ | |
8218 | ||
8219 | char * | |
8220 | Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp) | |
8221 | { | |
8222 | return sv_pvn_force_flags(sv, lp, SV_GMAGIC); | |
8223 | } | |
8224 | ||
c461cf8f JH |
8225 | /* |
8226 | =for apidoc sv_pvn_force | |
8227 | ||
8228 | Get a sensible string out of the SV somehow. | |
645c22ef DM |
8229 | A private implementation of the C<SvPV_force> macro for compilers which |
8230 | can't cope with complex macro expressions. Always use the macro instead. | |
c461cf8f | 8231 | |
8d6d96c1 HS |
8232 | =for apidoc sv_pvn_force_flags |
8233 | ||
8234 | Get a sensible string out of the SV somehow. | |
8235 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<sv> if | |
8236 | appropriate, else not. C<sv_pvn_force> and C<sv_pvn_force_nomg> are | |
8237 | implemented in terms of this function. | |
645c22ef DM |
8238 | You normally want to use the various wrapper macros instead: see |
8239 | C<SvPV_force> and C<SvPV_force_nomg> | |
8d6d96c1 HS |
8240 | |
8241 | =cut | |
8242 | */ | |
8243 | ||
8244 | char * | |
8245 | Perl_sv_pvn_force_flags(pTHX_ SV *sv, STRLEN *lp, I32 flags) | |
8246 | { | |
c04a4dfe | 8247 | char *s = NULL; |
a0d0e21e | 8248 | |
6fc92669 | 8249 | if (SvTHINKFIRST(sv) && !SvROK(sv)) |
765f542d | 8250 | sv_force_normal_flags(sv, 0); |
1c846c1f | 8251 | |
a0d0e21e LW |
8252 | if (SvPOK(sv)) { |
8253 | *lp = SvCUR(sv); | |
8254 | } | |
8255 | else { | |
748a9306 | 8256 | if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) { |
cea2e8a9 | 8257 | Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0), |
53e06cf0 | 8258 | OP_NAME(PL_op)); |
a0d0e21e | 8259 | } |
4633a7c4 | 8260 | else |
8d6d96c1 | 8261 | s = sv_2pv_flags(sv, lp, flags); |
a0d0e21e LW |
8262 | if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */ |
8263 | STRLEN len = *lp; | |
1c846c1f | 8264 | |
a0d0e21e LW |
8265 | if (SvROK(sv)) |
8266 | sv_unref(sv); | |
8267 | (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */ | |
8268 | SvGROW(sv, len + 1); | |
8269 | Move(s,SvPVX(sv),len,char); | |
8270 | SvCUR_set(sv, len); | |
8271 | *SvEND(sv) = '\0'; | |
8272 | } | |
8273 | if (!SvPOK(sv)) { | |
8274 | SvPOK_on(sv); /* validate pointer */ | |
8275 | SvTAINT(sv); | |
1d7c1841 GS |
8276 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
8277 | PTR2UV(sv),SvPVX(sv))); | |
a0d0e21e LW |
8278 | } |
8279 | } | |
8280 | return SvPVX(sv); | |
8281 | } | |
8282 | ||
09540bc3 JH |
8283 | /* sv_pvbyte () is now a macro using Perl_sv_2pv_flags(); |
8284 | * this function provided for binary compatibility only | |
8285 | */ | |
8286 | ||
8287 | char * | |
8288 | Perl_sv_pvbyte(pTHX_ SV *sv) | |
8289 | { | |
8290 | sv_utf8_downgrade(sv,0); | |
8291 | return sv_pv(sv); | |
8292 | } | |
8293 | ||
645c22ef DM |
8294 | /* |
8295 | =for apidoc sv_pvbyte | |
8296 | ||
baca2b92 | 8297 | Use C<SvPVbyte_nolen> instead. |
645c22ef | 8298 | |
645c22ef DM |
8299 | =for apidoc sv_pvbyten |
8300 | ||
8301 | A private implementation of the C<SvPVbyte> macro for compilers | |
8302 | which can't cope with complex macro expressions. Always use the macro | |
8303 | instead. | |
8304 | ||
8305 | =cut | |
8306 | */ | |
8307 | ||
7340a771 GS |
8308 | char * |
8309 | Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp) | |
8310 | { | |
ffebcc3e | 8311 | sv_utf8_downgrade(sv,0); |
7340a771 GS |
8312 | return sv_pvn(sv,lp); |
8313 | } | |
8314 | ||
645c22ef DM |
8315 | /* |
8316 | =for apidoc sv_pvbyten_force | |
8317 | ||
8318 | A private implementation of the C<SvPVbytex_force> macro for compilers | |
8319 | which can't cope with complex macro expressions. Always use the macro | |
8320 | instead. | |
8321 | ||
8322 | =cut | |
8323 | */ | |
8324 | ||
7340a771 GS |
8325 | char * |
8326 | Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp) | |
8327 | { | |
46ec2f14 | 8328 | sv_pvn_force(sv,lp); |
ffebcc3e | 8329 | sv_utf8_downgrade(sv,0); |
46ec2f14 TS |
8330 | *lp = SvCUR(sv); |
8331 | return SvPVX(sv); | |
7340a771 GS |
8332 | } |
8333 | ||
09540bc3 JH |
8334 | /* sv_pvutf8 () is now a macro using Perl_sv_2pv_flags(); |
8335 | * this function provided for binary compatibility only | |
8336 | */ | |
8337 | ||
8338 | char * | |
8339 | Perl_sv_pvutf8(pTHX_ SV *sv) | |
8340 | { | |
8341 | sv_utf8_upgrade(sv); | |
8342 | return sv_pv(sv); | |
8343 | } | |
8344 | ||
645c22ef DM |
8345 | /* |
8346 | =for apidoc sv_pvutf8 | |
8347 | ||
baca2b92 | 8348 | Use the C<SvPVutf8_nolen> macro instead |
645c22ef | 8349 | |
645c22ef DM |
8350 | =for apidoc sv_pvutf8n |
8351 | ||
8352 | A private implementation of the C<SvPVutf8> macro for compilers | |
8353 | which can't cope with complex macro expressions. Always use the macro | |
8354 | instead. | |
8355 | ||
8356 | =cut | |
8357 | */ | |
8358 | ||
7340a771 GS |
8359 | char * |
8360 | Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp) | |
8361 | { | |
560a288e | 8362 | sv_utf8_upgrade(sv); |
7340a771 GS |
8363 | return sv_pvn(sv,lp); |
8364 | } | |
8365 | ||
c461cf8f JH |
8366 | /* |
8367 | =for apidoc sv_pvutf8n_force | |
8368 | ||
645c22ef DM |
8369 | A private implementation of the C<SvPVutf8_force> macro for compilers |
8370 | which can't cope with complex macro expressions. Always use the macro | |
8371 | instead. | |
c461cf8f JH |
8372 | |
8373 | =cut | |
8374 | */ | |
8375 | ||
7340a771 GS |
8376 | char * |
8377 | Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp) | |
8378 | { | |
46ec2f14 | 8379 | sv_pvn_force(sv,lp); |
560a288e | 8380 | sv_utf8_upgrade(sv); |
46ec2f14 TS |
8381 | *lp = SvCUR(sv); |
8382 | return SvPVX(sv); | |
7340a771 GS |
8383 | } |
8384 | ||
c461cf8f JH |
8385 | /* |
8386 | =for apidoc sv_reftype | |
8387 | ||
8388 | Returns a string describing what the SV is a reference to. | |
8389 | ||
8390 | =cut | |
8391 | */ | |
8392 | ||
7340a771 | 8393 | char * |
864dbfa3 | 8394 | Perl_sv_reftype(pTHX_ SV *sv, int ob) |
a0d0e21e | 8395 | { |
c86bf373 | 8396 | if (ob && SvOBJECT(sv)) { |
e27ad1f2 AV |
8397 | if (HvNAME(SvSTASH(sv))) |
8398 | return HvNAME(SvSTASH(sv)); | |
8399 | else | |
8400 | return "__ANON__"; | |
c86bf373 | 8401 | } |
a0d0e21e LW |
8402 | else { |
8403 | switch (SvTYPE(sv)) { | |
8404 | case SVt_NULL: | |
8405 | case SVt_IV: | |
8406 | case SVt_NV: | |
8407 | case SVt_RV: | |
8408 | case SVt_PV: | |
8409 | case SVt_PVIV: | |
8410 | case SVt_PVNV: | |
8411 | case SVt_PVMG: | |
8412 | case SVt_PVBM: | |
439cb1c4 JP |
8413 | if (SvVOK(sv)) |
8414 | return "VSTRING"; | |
a0d0e21e LW |
8415 | if (SvROK(sv)) |
8416 | return "REF"; | |
8417 | else | |
8418 | return "SCALAR"; | |
be65207d DM |
8419 | |
8420 | case SVt_PVLV: return SvROK(sv) ? "REF" | |
8421 | /* tied lvalues should appear to be | |
8422 | * scalars for backwards compatitbility */ | |
8423 | : (LvTYPE(sv) == 't' || LvTYPE(sv) == 'T') | |
8424 | ? "SCALAR" : "LVALUE"; | |
a0d0e21e LW |
8425 | case SVt_PVAV: return "ARRAY"; |
8426 | case SVt_PVHV: return "HASH"; | |
8427 | case SVt_PVCV: return "CODE"; | |
8428 | case SVt_PVGV: return "GLOB"; | |
1d2dff63 | 8429 | case SVt_PVFM: return "FORMAT"; |
27f9d8f3 | 8430 | case SVt_PVIO: return "IO"; |
a0d0e21e LW |
8431 | default: return "UNKNOWN"; |
8432 | } | |
8433 | } | |
8434 | } | |
8435 | ||
954c1994 GS |
8436 | /* |
8437 | =for apidoc sv_isobject | |
8438 | ||
8439 | Returns a boolean indicating whether the SV is an RV pointing to a blessed | |
8440 | object. If the SV is not an RV, or if the object is not blessed, then this | |
8441 | will return false. | |
8442 | ||
8443 | =cut | |
8444 | */ | |
8445 | ||
463ee0b2 | 8446 | int |
864dbfa3 | 8447 | Perl_sv_isobject(pTHX_ SV *sv) |
85e6fe83 | 8448 | { |
68dc0745 | 8449 | if (!sv) |
8450 | return 0; | |
8451 | if (SvGMAGICAL(sv)) | |
8452 | mg_get(sv); | |
85e6fe83 LW |
8453 | if (!SvROK(sv)) |
8454 | return 0; | |
8455 | sv = (SV*)SvRV(sv); | |
8456 | if (!SvOBJECT(sv)) | |
8457 | return 0; | |
8458 | return 1; | |
8459 | } | |
8460 | ||
954c1994 GS |
8461 | /* |
8462 | =for apidoc sv_isa | |
8463 | ||
8464 | Returns a boolean indicating whether the SV is blessed into the specified | |
8465 | class. This does not check for subtypes; use C<sv_derived_from> to verify | |
8466 | an inheritance relationship. | |
8467 | ||
8468 | =cut | |
8469 | */ | |
8470 | ||
85e6fe83 | 8471 | int |
864dbfa3 | 8472 | Perl_sv_isa(pTHX_ SV *sv, const char *name) |
463ee0b2 | 8473 | { |
68dc0745 | 8474 | if (!sv) |
8475 | return 0; | |
8476 | if (SvGMAGICAL(sv)) | |
8477 | mg_get(sv); | |
ed6116ce | 8478 | if (!SvROK(sv)) |
463ee0b2 | 8479 | return 0; |
ed6116ce LW |
8480 | sv = (SV*)SvRV(sv); |
8481 | if (!SvOBJECT(sv)) | |
463ee0b2 | 8482 | return 0; |
e27ad1f2 AV |
8483 | if (!HvNAME(SvSTASH(sv))) |
8484 | return 0; | |
463ee0b2 LW |
8485 | |
8486 | return strEQ(HvNAME(SvSTASH(sv)), name); | |
8487 | } | |
8488 | ||
954c1994 GS |
8489 | /* |
8490 | =for apidoc newSVrv | |
8491 | ||
8492 | Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then | |
8493 | it will be upgraded to one. If C<classname> is non-null then the new SV will | |
8494 | be blessed in the specified package. The new SV is returned and its | |
8495 | reference count is 1. | |
8496 | ||
8497 | =cut | |
8498 | */ | |
8499 | ||
463ee0b2 | 8500 | SV* |
864dbfa3 | 8501 | Perl_newSVrv(pTHX_ SV *rv, const char *classname) |
463ee0b2 | 8502 | { |
463ee0b2 LW |
8503 | SV *sv; |
8504 | ||
4561caa4 | 8505 | new_SV(sv); |
51cf62d8 | 8506 | |
765f542d | 8507 | SV_CHECK_THINKFIRST_COW_DROP(rv); |
51cf62d8 | 8508 | SvAMAGIC_off(rv); |
51cf62d8 | 8509 | |
0199fce9 JD |
8510 | if (SvTYPE(rv) >= SVt_PVMG) { |
8511 | U32 refcnt = SvREFCNT(rv); | |
8512 | SvREFCNT(rv) = 0; | |
8513 | sv_clear(rv); | |
8514 | SvFLAGS(rv) = 0; | |
8515 | SvREFCNT(rv) = refcnt; | |
8516 | } | |
8517 | ||
51cf62d8 | 8518 | if (SvTYPE(rv) < SVt_RV) |
0199fce9 JD |
8519 | sv_upgrade(rv, SVt_RV); |
8520 | else if (SvTYPE(rv) > SVt_RV) { | |
8521 | (void)SvOOK_off(rv); | |
8522 | if (SvPVX(rv) && SvLEN(rv)) | |
8523 | Safefree(SvPVX(rv)); | |
8524 | SvCUR_set(rv, 0); | |
8525 | SvLEN_set(rv, 0); | |
8526 | } | |
51cf62d8 OT |
8527 | |
8528 | (void)SvOK_off(rv); | |
053fc874 | 8529 | SvRV(rv) = sv; |
ed6116ce | 8530 | SvROK_on(rv); |
463ee0b2 | 8531 | |
a0d0e21e LW |
8532 | if (classname) { |
8533 | HV* stash = gv_stashpv(classname, TRUE); | |
8534 | (void)sv_bless(rv, stash); | |
8535 | } | |
8536 | return sv; | |
8537 | } | |
8538 | ||
954c1994 GS |
8539 | /* |
8540 | =for apidoc sv_setref_pv | |
8541 | ||
8542 | Copies a pointer into a new SV, optionally blessing the SV. The C<rv> | |
8543 | argument will be upgraded to an RV. That RV will be modified to point to | |
8544 | the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed | |
8545 | into the SV. The C<classname> argument indicates the package for the | |
8546 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8547 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
8548 | |
8549 | Do not use with other Perl types such as HV, AV, SV, CV, because those | |
8550 | objects will become corrupted by the pointer copy process. | |
8551 | ||
8552 | Note that C<sv_setref_pvn> copies the string while this copies the pointer. | |
8553 | ||
8554 | =cut | |
8555 | */ | |
8556 | ||
a0d0e21e | 8557 | SV* |
864dbfa3 | 8558 | Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv) |
a0d0e21e | 8559 | { |
189b2af5 | 8560 | if (!pv) { |
3280af22 | 8561 | sv_setsv(rv, &PL_sv_undef); |
189b2af5 GS |
8562 | SvSETMAGIC(rv); |
8563 | } | |
a0d0e21e | 8564 | else |
56431972 | 8565 | sv_setiv(newSVrv(rv,classname), PTR2IV(pv)); |
a0d0e21e LW |
8566 | return rv; |
8567 | } | |
8568 | ||
954c1994 GS |
8569 | /* |
8570 | =for apidoc sv_setref_iv | |
8571 | ||
8572 | Copies an integer into a new SV, optionally blessing the SV. The C<rv> | |
8573 | argument will be upgraded to an RV. That RV will be modified to point to | |
8574 | the new SV. The C<classname> argument indicates the package for the | |
8575 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8576 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
8577 | |
8578 | =cut | |
8579 | */ | |
8580 | ||
a0d0e21e | 8581 | SV* |
864dbfa3 | 8582 | Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv) |
a0d0e21e LW |
8583 | { |
8584 | sv_setiv(newSVrv(rv,classname), iv); | |
8585 | return rv; | |
8586 | } | |
8587 | ||
954c1994 | 8588 | /* |
e1c57cef JH |
8589 | =for apidoc sv_setref_uv |
8590 | ||
8591 | Copies an unsigned integer into a new SV, optionally blessing the SV. The C<rv> | |
8592 | argument will be upgraded to an RV. That RV will be modified to point to | |
8593 | the new SV. The C<classname> argument indicates the package for the | |
8594 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8595 | will have a reference count of 1, and the RV will be returned. |
e1c57cef JH |
8596 | |
8597 | =cut | |
8598 | */ | |
8599 | ||
8600 | SV* | |
8601 | Perl_sv_setref_uv(pTHX_ SV *rv, const char *classname, UV uv) | |
8602 | { | |
8603 | sv_setuv(newSVrv(rv,classname), uv); | |
8604 | return rv; | |
8605 | } | |
8606 | ||
8607 | /* | |
954c1994 GS |
8608 | =for apidoc sv_setref_nv |
8609 | ||
8610 | Copies a double into a new SV, optionally blessing the SV. The C<rv> | |
8611 | argument will be upgraded to an RV. That RV will be modified to point to | |
8612 | the new SV. The C<classname> argument indicates the package for the | |
8613 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8614 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
8615 | |
8616 | =cut | |
8617 | */ | |
8618 | ||
a0d0e21e | 8619 | SV* |
65202027 | 8620 | Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv) |
a0d0e21e LW |
8621 | { |
8622 | sv_setnv(newSVrv(rv,classname), nv); | |
8623 | return rv; | |
8624 | } | |
463ee0b2 | 8625 | |
954c1994 GS |
8626 | /* |
8627 | =for apidoc sv_setref_pvn | |
8628 | ||
8629 | Copies a string into a new SV, optionally blessing the SV. The length of the | |
8630 | string must be specified with C<n>. The C<rv> argument will be upgraded to | |
8631 | an RV. That RV will be modified to point to the new SV. The C<classname> | |
8632 | argument indicates the package for the blessing. Set C<classname> to | |
d34c2299 JS |
8633 | C<Nullch> to avoid the blessing. The new SV will have a reference count |
8634 | of 1, and the RV will be returned. | |
954c1994 GS |
8635 | |
8636 | Note that C<sv_setref_pv> copies the pointer while this copies the string. | |
8637 | ||
8638 | =cut | |
8639 | */ | |
8640 | ||
a0d0e21e | 8641 | SV* |
864dbfa3 | 8642 | Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n) |
a0d0e21e LW |
8643 | { |
8644 | sv_setpvn(newSVrv(rv,classname), pv, n); | |
463ee0b2 LW |
8645 | return rv; |
8646 | } | |
8647 | ||
954c1994 GS |
8648 | /* |
8649 | =for apidoc sv_bless | |
8650 | ||
8651 | Blesses an SV into a specified package. The SV must be an RV. The package | |
8652 | must be designated by its stash (see C<gv_stashpv()>). The reference count | |
8653 | of the SV is unaffected. | |
8654 | ||
8655 | =cut | |
8656 | */ | |
8657 | ||
a0d0e21e | 8658 | SV* |
864dbfa3 | 8659 | Perl_sv_bless(pTHX_ SV *sv, HV *stash) |
a0d0e21e | 8660 | { |
76e3520e | 8661 | SV *tmpRef; |
a0d0e21e | 8662 | if (!SvROK(sv)) |
cea2e8a9 | 8663 | Perl_croak(aTHX_ "Can't bless non-reference value"); |
76e3520e GS |
8664 | tmpRef = SvRV(sv); |
8665 | if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) { | |
8666 | if (SvREADONLY(tmpRef)) | |
cea2e8a9 | 8667 | Perl_croak(aTHX_ PL_no_modify); |
76e3520e GS |
8668 | if (SvOBJECT(tmpRef)) { |
8669 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 8670 | --PL_sv_objcount; |
76e3520e | 8671 | SvREFCNT_dec(SvSTASH(tmpRef)); |
2e3febc6 | 8672 | } |
a0d0e21e | 8673 | } |
76e3520e GS |
8674 | SvOBJECT_on(tmpRef); |
8675 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 8676 | ++PL_sv_objcount; |
76e3520e GS |
8677 | (void)SvUPGRADE(tmpRef, SVt_PVMG); |
8678 | SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash); | |
a0d0e21e | 8679 | |
2e3febc6 CS |
8680 | if (Gv_AMG(stash)) |
8681 | SvAMAGIC_on(sv); | |
8682 | else | |
8683 | SvAMAGIC_off(sv); | |
a0d0e21e | 8684 | |
1edbfb88 AB |
8685 | if(SvSMAGICAL(tmpRef)) |
8686 | if(mg_find(tmpRef, PERL_MAGIC_ext) || mg_find(tmpRef, PERL_MAGIC_uvar)) | |
8687 | mg_set(tmpRef); | |
8688 | ||
8689 | ||
ecdeb87c | 8690 | |
a0d0e21e LW |
8691 | return sv; |
8692 | } | |
8693 | ||
645c22ef | 8694 | /* Downgrades a PVGV to a PVMG. |
645c22ef DM |
8695 | */ |
8696 | ||
76e3520e | 8697 | STATIC void |
cea2e8a9 | 8698 | S_sv_unglob(pTHX_ SV *sv) |
a0d0e21e | 8699 | { |
850fabdf GS |
8700 | void *xpvmg; |
8701 | ||
a0d0e21e LW |
8702 | assert(SvTYPE(sv) == SVt_PVGV); |
8703 | SvFAKE_off(sv); | |
8704 | if (GvGP(sv)) | |
1edc1566 | 8705 | gp_free((GV*)sv); |
e826b3c7 GS |
8706 | if (GvSTASH(sv)) { |
8707 | SvREFCNT_dec(GvSTASH(sv)); | |
8708 | GvSTASH(sv) = Nullhv; | |
8709 | } | |
14befaf4 | 8710 | sv_unmagic(sv, PERL_MAGIC_glob); |
a0d0e21e | 8711 | Safefree(GvNAME(sv)); |
a5f75d66 | 8712 | GvMULTI_off(sv); |
850fabdf GS |
8713 | |
8714 | /* need to keep SvANY(sv) in the right arena */ | |
8715 | xpvmg = new_XPVMG(); | |
8716 | StructCopy(SvANY(sv), xpvmg, XPVMG); | |
8717 | del_XPVGV(SvANY(sv)); | |
8718 | SvANY(sv) = xpvmg; | |
8719 | ||
a0d0e21e LW |
8720 | SvFLAGS(sv) &= ~SVTYPEMASK; |
8721 | SvFLAGS(sv) |= SVt_PVMG; | |
8722 | } | |
8723 | ||
954c1994 | 8724 | /* |
840a7b70 | 8725 | =for apidoc sv_unref_flags |
954c1994 GS |
8726 | |
8727 | Unsets the RV status of the SV, and decrements the reference count of | |
8728 | whatever was being referenced by the RV. This can almost be thought of | |
840a7b70 IZ |
8729 | as a reversal of C<newSVrv>. The C<cflags> argument can contain |
8730 | C<SV_IMMEDIATE_UNREF> to force the reference count to be decremented | |
8731 | (otherwise the decrementing is conditional on the reference count being | |
8732 | different from one or the reference being a readonly SV). | |
7889fe52 | 8733 | See C<SvROK_off>. |
954c1994 GS |
8734 | |
8735 | =cut | |
8736 | */ | |
8737 | ||
ed6116ce | 8738 | void |
840a7b70 | 8739 | Perl_sv_unref_flags(pTHX_ SV *sv, U32 flags) |
ed6116ce | 8740 | { |
a0d0e21e | 8741 | SV* rv = SvRV(sv); |
810b8aa5 GS |
8742 | |
8743 | if (SvWEAKREF(sv)) { | |
8744 | sv_del_backref(sv); | |
8745 | SvWEAKREF_off(sv); | |
8746 | SvRV(sv) = 0; | |
8747 | return; | |
8748 | } | |
ed6116ce LW |
8749 | SvRV(sv) = 0; |
8750 | SvROK_off(sv); | |
04ca4930 NC |
8751 | /* You can't have a || SvREADONLY(rv) here, as $a = $$a, where $a was |
8752 | assigned to as BEGIN {$a = \"Foo"} will fail. */ | |
8753 | if (SvREFCNT(rv) != 1 || (flags & SV_IMMEDIATE_UNREF)) | |
4633a7c4 | 8754 | SvREFCNT_dec(rv); |
840a7b70 | 8755 | else /* XXX Hack, but hard to make $a=$a->[1] work otherwise */ |
4633a7c4 | 8756 | sv_2mortal(rv); /* Schedule for freeing later */ |
ed6116ce | 8757 | } |
8990e307 | 8758 | |
840a7b70 IZ |
8759 | /* |
8760 | =for apidoc sv_unref | |
8761 | ||
8762 | Unsets the RV status of the SV, and decrements the reference count of | |
8763 | whatever was being referenced by the RV. This can almost be thought of | |
8764 | as a reversal of C<newSVrv>. This is C<sv_unref_flags> with the C<flag> | |
7889fe52 | 8765 | being zero. See C<SvROK_off>. |
840a7b70 IZ |
8766 | |
8767 | =cut | |
8768 | */ | |
8769 | ||
8770 | void | |
8771 | Perl_sv_unref(pTHX_ SV *sv) | |
8772 | { | |
8773 | sv_unref_flags(sv, 0); | |
8774 | } | |
8775 | ||
645c22ef DM |
8776 | /* |
8777 | =for apidoc sv_taint | |
8778 | ||
8779 | Taint an SV. Use C<SvTAINTED_on> instead. | |
8780 | =cut | |
8781 | */ | |
8782 | ||
bbce6d69 | 8783 | void |
864dbfa3 | 8784 | Perl_sv_taint(pTHX_ SV *sv) |
bbce6d69 | 8785 | { |
14befaf4 | 8786 | sv_magic((sv), Nullsv, PERL_MAGIC_taint, Nullch, 0); |
bbce6d69 | 8787 | } |
8788 | ||
645c22ef DM |
8789 | /* |
8790 | =for apidoc sv_untaint | |
8791 | ||
8792 | Untaint an SV. Use C<SvTAINTED_off> instead. | |
8793 | =cut | |
8794 | */ | |
8795 | ||
bbce6d69 | 8796 | void |
864dbfa3 | 8797 | Perl_sv_untaint(pTHX_ SV *sv) |
bbce6d69 | 8798 | { |
13f57bf8 | 8799 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
14befaf4 | 8800 | MAGIC *mg = mg_find(sv, PERL_MAGIC_taint); |
36477c24 | 8801 | if (mg) |
565764a8 | 8802 | mg->mg_len &= ~1; |
36477c24 | 8803 | } |
bbce6d69 | 8804 | } |
8805 | ||
645c22ef DM |
8806 | /* |
8807 | =for apidoc sv_tainted | |
8808 | ||
8809 | Test an SV for taintedness. Use C<SvTAINTED> instead. | |
8810 | =cut | |
8811 | */ | |
8812 | ||
bbce6d69 | 8813 | bool |
864dbfa3 | 8814 | Perl_sv_tainted(pTHX_ SV *sv) |
bbce6d69 | 8815 | { |
13f57bf8 | 8816 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
14befaf4 | 8817 | MAGIC *mg = mg_find(sv, PERL_MAGIC_taint); |
155aba94 | 8818 | if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv))) |
36477c24 | 8819 | return TRUE; |
8820 | } | |
8821 | return FALSE; | |
bbce6d69 | 8822 | } |
8823 | ||
09540bc3 JH |
8824 | /* |
8825 | =for apidoc sv_setpviv | |
8826 | ||
8827 | Copies an integer into the given SV, also updating its string value. | |
8828 | Does not handle 'set' magic. See C<sv_setpviv_mg>. | |
8829 | ||
8830 | =cut | |
8831 | */ | |
8832 | ||
8833 | void | |
8834 | Perl_sv_setpviv(pTHX_ SV *sv, IV iv) | |
8835 | { | |
8836 | char buf[TYPE_CHARS(UV)]; | |
8837 | char *ebuf; | |
8838 | char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf); | |
8839 | ||
8840 | sv_setpvn(sv, ptr, ebuf - ptr); | |
8841 | } | |
8842 | ||
8843 | /* | |
8844 | =for apidoc sv_setpviv_mg | |
8845 | ||
8846 | Like C<sv_setpviv>, but also handles 'set' magic. | |
8847 | ||
8848 | =cut | |
8849 | */ | |
8850 | ||
8851 | void | |
8852 | Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv) | |
8853 | { | |
8854 | char buf[TYPE_CHARS(UV)]; | |
8855 | char *ebuf; | |
8856 | char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf); | |
8857 | ||
8858 | sv_setpvn(sv, ptr, ebuf - ptr); | |
8859 | SvSETMAGIC(sv); | |
8860 | } | |
8861 | ||
cea2e8a9 | 8862 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
8863 | |
8864 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
8865 | * version of the main function, (which may itself be aliased to us). | |
8866 | * Don't access this version directly. | |
8867 | */ | |
8868 | ||
cea2e8a9 GS |
8869 | void |
8870 | Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...) | |
8871 | { | |
8872 | dTHX; | |
8873 | va_list args; | |
8874 | va_start(args, pat); | |
c5be433b | 8875 | sv_vsetpvf(sv, pat, &args); |
cea2e8a9 GS |
8876 | va_end(args); |
8877 | } | |
8878 | ||
645c22ef DM |
8879 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
8880 | * version of the main function, (which may itself be aliased to us). | |
8881 | * Don't access this version directly. | |
8882 | */ | |
cea2e8a9 GS |
8883 | |
8884 | void | |
8885 | Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
8886 | { | |
8887 | dTHX; | |
8888 | va_list args; | |
8889 | va_start(args, pat); | |
c5be433b | 8890 | sv_vsetpvf_mg(sv, pat, &args); |
cea2e8a9 | 8891 | va_end(args); |
cea2e8a9 GS |
8892 | } |
8893 | #endif | |
8894 | ||
954c1994 GS |
8895 | /* |
8896 | =for apidoc sv_setpvf | |
8897 | ||
8898 | Processes its arguments like C<sprintf> and sets an SV to the formatted | |
8899 | output. Does not handle 'set' magic. See C<sv_setpvf_mg>. | |
8900 | ||
8901 | =cut | |
8902 | */ | |
8903 | ||
46fc3d4c | 8904 | void |
864dbfa3 | 8905 | Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 8906 | { |
8907 | va_list args; | |
46fc3d4c | 8908 | va_start(args, pat); |
c5be433b | 8909 | sv_vsetpvf(sv, pat, &args); |
46fc3d4c | 8910 | va_end(args); |
8911 | } | |
8912 | ||
645c22ef DM |
8913 | /* backend for C<sv_setpvf> and C<sv_setpvf_nocontext> */ |
8914 | ||
c5be433b GS |
8915 | void |
8916 | Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args) | |
8917 | { | |
8918 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
8919 | } | |
ef50df4b | 8920 | |
954c1994 GS |
8921 | /* |
8922 | =for apidoc sv_setpvf_mg | |
8923 | ||
8924 | Like C<sv_setpvf>, but also handles 'set' magic. | |
8925 | ||
8926 | =cut | |
8927 | */ | |
8928 | ||
ef50df4b | 8929 | void |
864dbfa3 | 8930 | Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
8931 | { |
8932 | va_list args; | |
ef50df4b | 8933 | va_start(args, pat); |
c5be433b | 8934 | sv_vsetpvf_mg(sv, pat, &args); |
ef50df4b | 8935 | va_end(args); |
c5be433b GS |
8936 | } |
8937 | ||
645c22ef DM |
8938 | /* backend for C<sv_setpvf_mg> C<setpvf_mg_nocontext> */ |
8939 | ||
c5be433b GS |
8940 | void |
8941 | Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
8942 | { | |
8943 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
ef50df4b GS |
8944 | SvSETMAGIC(sv); |
8945 | } | |
8946 | ||
cea2e8a9 | 8947 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
8948 | |
8949 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
8950 | * version of the main function, (which may itself be aliased to us). | |
8951 | * Don't access this version directly. | |
8952 | */ | |
8953 | ||
cea2e8a9 GS |
8954 | void |
8955 | Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...) | |
8956 | { | |
8957 | dTHX; | |
8958 | va_list args; | |
8959 | va_start(args, pat); | |
c5be433b | 8960 | sv_vcatpvf(sv, pat, &args); |
cea2e8a9 GS |
8961 | va_end(args); |
8962 | } | |
8963 | ||
645c22ef DM |
8964 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
8965 | * version of the main function, (which may itself be aliased to us). | |
8966 | * Don't access this version directly. | |
8967 | */ | |
8968 | ||
cea2e8a9 GS |
8969 | void |
8970 | Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
8971 | { | |
8972 | dTHX; | |
8973 | va_list args; | |
8974 | va_start(args, pat); | |
c5be433b | 8975 | sv_vcatpvf_mg(sv, pat, &args); |
cea2e8a9 | 8976 | va_end(args); |
cea2e8a9 GS |
8977 | } |
8978 | #endif | |
8979 | ||
954c1994 GS |
8980 | /* |
8981 | =for apidoc sv_catpvf | |
8982 | ||
d5ce4a7c GA |
8983 | Processes its arguments like C<sprintf> and appends the formatted |
8984 | output to an SV. If the appended data contains "wide" characters | |
8985 | (including, but not limited to, SVs with a UTF-8 PV formatted with %s, | |
8986 | and characters >255 formatted with %c), the original SV might get | |
8987 | upgraded to UTF-8. Handles 'get' magic, but not 'set' magic. | |
8988 | C<SvSETMAGIC()> must typically be called after calling this function | |
8989 | to handle 'set' magic. | |
954c1994 | 8990 | |
d5ce4a7c | 8991 | =cut */ |
954c1994 | 8992 | |
46fc3d4c | 8993 | void |
864dbfa3 | 8994 | Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 8995 | { |
8996 | va_list args; | |
46fc3d4c | 8997 | va_start(args, pat); |
c5be433b | 8998 | sv_vcatpvf(sv, pat, &args); |
46fc3d4c | 8999 | va_end(args); |
9000 | } | |
9001 | ||
645c22ef DM |
9002 | /* backend for C<sv_catpvf> and C<catpvf_mg_nocontext> */ |
9003 | ||
ef50df4b | 9004 | void |
c5be433b GS |
9005 | Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args) |
9006 | { | |
9007 | sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
9008 | } | |
9009 | ||
954c1994 GS |
9010 | /* |
9011 | =for apidoc sv_catpvf_mg | |
9012 | ||
9013 | Like C<sv_catpvf>, but also handles 'set' magic. | |
9014 | ||
9015 | =cut | |
9016 | */ | |
9017 | ||
c5be433b | 9018 | void |
864dbfa3 | 9019 | Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
9020 | { |
9021 | va_list args; | |
ef50df4b | 9022 | va_start(args, pat); |
c5be433b | 9023 | sv_vcatpvf_mg(sv, pat, &args); |
ef50df4b | 9024 | va_end(args); |
c5be433b GS |
9025 | } |
9026 | ||
645c22ef DM |
9027 | /* backend for C<catpvf_mg> and C<catpvf_mg_nocontext> */ |
9028 | ||
c5be433b GS |
9029 | void |
9030 | Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
9031 | { | |
9032 | sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
ef50df4b GS |
9033 | SvSETMAGIC(sv); |
9034 | } | |
9035 | ||
954c1994 GS |
9036 | /* |
9037 | =for apidoc sv_vsetpvfn | |
9038 | ||
9039 | Works like C<vcatpvfn> but copies the text into the SV instead of | |
9040 | appending it. | |
9041 | ||
645c22ef DM |
9042 | Usually used via one of its frontends C<sv_setpvf> and C<sv_setpvf_mg>. |
9043 | ||
954c1994 GS |
9044 | =cut |
9045 | */ | |
9046 | ||
46fc3d4c | 9047 | void |
7d5ea4e7 | 9048 | Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 9049 | { |
9050 | sv_setpvn(sv, "", 0); | |
7d5ea4e7 | 9051 | sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted); |
46fc3d4c | 9052 | } |
9053 | ||
645c22ef DM |
9054 | /* private function for use in sv_vcatpvfn via the EXPECT_NUMBER macro */ |
9055 | ||
2d00ba3b | 9056 | STATIC I32 |
9dd79c3f | 9057 | S_expect_number(pTHX_ char** pattern) |
211dfcf1 HS |
9058 | { |
9059 | I32 var = 0; | |
9060 | switch (**pattern) { | |
9061 | case '1': case '2': case '3': | |
9062 | case '4': case '5': case '6': | |
9063 | case '7': case '8': case '9': | |
9064 | while (isDIGIT(**pattern)) | |
9065 | var = var * 10 + (*(*pattern)++ - '0'); | |
9066 | } | |
9067 | return var; | |
9068 | } | |
9dd79c3f | 9069 | #define EXPECT_NUMBER(pattern, var) (var = S_expect_number(aTHX_ &pattern)) |
211dfcf1 | 9070 | |
4151a5fe IZ |
9071 | static char * |
9072 | F0convert(NV nv, char *endbuf, STRLEN *len) | |
9073 | { | |
9074 | int neg = nv < 0; | |
9075 | UV uv; | |
9076 | char *p = endbuf; | |
9077 | ||
9078 | if (neg) | |
9079 | nv = -nv; | |
9080 | if (nv < UV_MAX) { | |
9081 | nv += 0.5; | |
028f8eaa | 9082 | uv = (UV)nv; |
4151a5fe IZ |
9083 | if (uv & 1 && uv == nv) |
9084 | uv--; /* Round to even */ | |
9085 | do { | |
9086 | unsigned dig = uv % 10; | |
9087 | *--p = '0' + dig; | |
9088 | } while (uv /= 10); | |
9089 | if (neg) | |
9090 | *--p = '-'; | |
9091 | *len = endbuf - p; | |
9092 | return p; | |
9093 | } | |
9094 | return Nullch; | |
9095 | } | |
9096 | ||
9097 | ||
954c1994 GS |
9098 | /* |
9099 | =for apidoc sv_vcatpvfn | |
9100 | ||
9101 | Processes its arguments like C<vsprintf> and appends the formatted output | |
9102 | to an SV. Uses an array of SVs if the C style variable argument list is | |
9103 | missing (NULL). When running with taint checks enabled, indicates via | |
9104 | C<maybe_tainted> if results are untrustworthy (often due to the use of | |
9105 | locales). | |
9106 | ||
645c22ef DM |
9107 | Usually used via one of its frontends C<sv_catpvf> and C<sv_catpvf_mg>. |
9108 | ||
954c1994 GS |
9109 | =cut |
9110 | */ | |
9111 | ||
46fc3d4c | 9112 | void |
7d5ea4e7 | 9113 | Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 9114 | { |
9115 | char *p; | |
9116 | char *q; | |
9117 | char *patend; | |
fc36a67e | 9118 | STRLEN origlen; |
46fc3d4c | 9119 | I32 svix = 0; |
c635e13b | 9120 | static char nullstr[] = "(null)"; |
9c5ffd7c | 9121 | SV *argsv = Nullsv; |
db79b45b JH |
9122 | bool has_utf8; /* has the result utf8? */ |
9123 | bool pat_utf8; /* the pattern is in utf8? */ | |
9124 | SV *nsv = Nullsv; | |
4151a5fe IZ |
9125 | /* Times 4: a decimal digit takes more than 3 binary digits. |
9126 | * NV_DIG: mantissa takes than many decimal digits. | |
9127 | * Plus 32: Playing safe. */ | |
9128 | char ebuf[IV_DIG * 4 + NV_DIG + 32]; | |
9129 | /* large enough for "%#.#f" --chip */ | |
9130 | /* what about long double NVs? --jhi */ | |
db79b45b JH |
9131 | |
9132 | has_utf8 = pat_utf8 = DO_UTF8(sv); | |
46fc3d4c | 9133 | |
9134 | /* no matter what, this is a string now */ | |
fc36a67e | 9135 | (void)SvPV_force(sv, origlen); |
46fc3d4c | 9136 | |
fc36a67e | 9137 | /* special-case "", "%s", and "%_" */ |
46fc3d4c | 9138 | if (patlen == 0) |
9139 | return; | |
fc36a67e | 9140 | if (patlen == 2 && pat[0] == '%') { |
9141 | switch (pat[1]) { | |
9142 | case 's': | |
c635e13b | 9143 | if (args) { |
9144 | char *s = va_arg(*args, char*); | |
9145 | sv_catpv(sv, s ? s : nullstr); | |
9146 | } | |
7e2040f0 | 9147 | else if (svix < svmax) { |
fc36a67e | 9148 | sv_catsv(sv, *svargs); |
7e2040f0 GS |
9149 | if (DO_UTF8(*svargs)) |
9150 | SvUTF8_on(sv); | |
9151 | } | |
fc36a67e | 9152 | return; |
9153 | case '_': | |
9154 | if (args) { | |
7e2040f0 GS |
9155 | argsv = va_arg(*args, SV*); |
9156 | sv_catsv(sv, argsv); | |
9157 | if (DO_UTF8(argsv)) | |
9158 | SvUTF8_on(sv); | |
fc36a67e | 9159 | return; |
9160 | } | |
9161 | /* See comment on '_' below */ | |
9162 | break; | |
9163 | } | |
46fc3d4c | 9164 | } |
9165 | ||
1d917b39 | 9166 | #ifndef USE_LONG_DOUBLE |
4151a5fe IZ |
9167 | /* special-case "%.<number>[gf]" */ |
9168 | if ( patlen <= 5 && pat[0] == '%' && pat[1] == '.' | |
9169 | && (pat[patlen-1] == 'g' || pat[patlen-1] == 'f') ) { | |
9170 | unsigned digits = 0; | |
9171 | const char *pp; | |
9172 | ||
9173 | pp = pat + 2; | |
9174 | while (*pp >= '0' && *pp <= '9') | |
9175 | digits = 10 * digits + (*pp++ - '0'); | |
028f8eaa | 9176 | if (pp - pat == (int)patlen - 1) { |
4151a5fe IZ |
9177 | NV nv; |
9178 | ||
9179 | if (args) | |
9180 | nv = (NV)va_arg(*args, double); | |
9181 | else if (svix < svmax) | |
9182 | nv = SvNV(*svargs); | |
9183 | else | |
9184 | return; | |
9185 | if (*pp == 'g') { | |
2873255c NC |
9186 | /* Add check for digits != 0 because it seems that some |
9187 | gconverts are buggy in this case, and we don't yet have | |
9188 | a Configure test for this. */ | |
9189 | if (digits && digits < sizeof(ebuf) - NV_DIG - 10) { | |
9190 | /* 0, point, slack */ | |
2e59c212 | 9191 | Gconvert(nv, (int)digits, 0, ebuf); |
4151a5fe IZ |
9192 | sv_catpv(sv, ebuf); |
9193 | if (*ebuf) /* May return an empty string for digits==0 */ | |
9194 | return; | |
9195 | } | |
9196 | } else if (!digits) { | |
9197 | STRLEN l; | |
9198 | ||
9199 | if ((p = F0convert(nv, ebuf + sizeof ebuf, &l))) { | |
9200 | sv_catpvn(sv, p, l); | |
9201 | return; | |
9202 | } | |
9203 | } | |
9204 | } | |
9205 | } | |
1d917b39 | 9206 | #endif /* !USE_LONG_DOUBLE */ |
4151a5fe | 9207 | |
2cf2cfc6 | 9208 | if (!args && svix < svmax && DO_UTF8(*svargs)) |
205f51d8 | 9209 | has_utf8 = TRUE; |
2cf2cfc6 | 9210 | |
46fc3d4c | 9211 | patend = (char*)pat + patlen; |
9212 | for (p = (char*)pat; p < patend; p = q) { | |
9213 | bool alt = FALSE; | |
9214 | bool left = FALSE; | |
b22c7a20 | 9215 | bool vectorize = FALSE; |
211dfcf1 | 9216 | bool vectorarg = FALSE; |
2cf2cfc6 | 9217 | bool vec_utf8 = FALSE; |
46fc3d4c | 9218 | char fill = ' '; |
9219 | char plus = 0; | |
9220 | char intsize = 0; | |
9221 | STRLEN width = 0; | |
fc36a67e | 9222 | STRLEN zeros = 0; |
46fc3d4c | 9223 | bool has_precis = FALSE; |
9224 | STRLEN precis = 0; | |
58e33a90 | 9225 | I32 osvix = svix; |
2cf2cfc6 | 9226 | bool is_utf8 = FALSE; /* is this item utf8? */ |
20f6aaab AS |
9227 | #ifdef HAS_LDBL_SPRINTF_BUG |
9228 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 | 9229 | with sfio - Allen <allens@cpan.org> */ |
20f6aaab AS |
9230 | bool fix_ldbl_sprintf_bug = FALSE; |
9231 | #endif | |
205f51d8 | 9232 | |
46fc3d4c | 9233 | char esignbuf[4]; |
ad391ad9 | 9234 | U8 utf8buf[UTF8_MAXLEN+1]; |
46fc3d4c | 9235 | STRLEN esignlen = 0; |
9236 | ||
9237 | char *eptr = Nullch; | |
fc36a67e | 9238 | STRLEN elen = 0; |
81f715da | 9239 | SV *vecsv = Nullsv; |
a05b299f | 9240 | U8 *vecstr = Null(U8*); |
b22c7a20 | 9241 | STRLEN veclen = 0; |
934abaf1 | 9242 | char c = 0; |
46fc3d4c | 9243 | int i; |
9c5ffd7c | 9244 | unsigned base = 0; |
8c8eb53c RB |
9245 | IV iv = 0; |
9246 | UV uv = 0; | |
9e5b023a JH |
9247 | /* we need a long double target in case HAS_LONG_DOUBLE but |
9248 | not USE_LONG_DOUBLE | |
9249 | */ | |
35fff930 | 9250 | #if defined(HAS_LONG_DOUBLE) && LONG_DOUBLESIZE > DOUBLESIZE |
9e5b023a JH |
9251 | long double nv; |
9252 | #else | |
65202027 | 9253 | NV nv; |
9e5b023a | 9254 | #endif |
46fc3d4c | 9255 | STRLEN have; |
9256 | STRLEN need; | |
9257 | STRLEN gap; | |
b22c7a20 GS |
9258 | char *dotstr = "."; |
9259 | STRLEN dotstrlen = 1; | |
211dfcf1 | 9260 | I32 efix = 0; /* explicit format parameter index */ |
eb3fce90 | 9261 | I32 ewix = 0; /* explicit width index */ |
211dfcf1 HS |
9262 | I32 epix = 0; /* explicit precision index */ |
9263 | I32 evix = 0; /* explicit vector index */ | |
eb3fce90 | 9264 | bool asterisk = FALSE; |
46fc3d4c | 9265 | |
211dfcf1 | 9266 | /* echo everything up to the next format specification */ |
46fc3d4c | 9267 | for (q = p; q < patend && *q != '%'; ++q) ; |
9268 | if (q > p) { | |
db79b45b JH |
9269 | if (has_utf8 && !pat_utf8) |
9270 | sv_catpvn_utf8_upgrade(sv, p, q - p, nsv); | |
9271 | else | |
9272 | sv_catpvn(sv, p, q - p); | |
46fc3d4c | 9273 | p = q; |
9274 | } | |
9275 | if (q++ >= patend) | |
9276 | break; | |
9277 | ||
211dfcf1 HS |
9278 | /* |
9279 | We allow format specification elements in this order: | |
9280 | \d+\$ explicit format parameter index | |
9281 | [-+ 0#]+ flags | |
a472f209 | 9282 | v|\*(\d+\$)?v vector with optional (optionally specified) arg |
f3583277 | 9283 | 0 flag (as above): repeated to allow "v02" |
211dfcf1 HS |
9284 | \d+|\*(\d+\$)? width using optional (optionally specified) arg |
9285 | \.(\d*|\*(\d+\$)?) precision using optional (optionally specified) arg | |
9286 | [hlqLV] size | |
9287 | [%bcdefginopsux_DFOUX] format (mandatory) | |
9288 | */ | |
9289 | if (EXPECT_NUMBER(q, width)) { | |
9290 | if (*q == '$') { | |
9291 | ++q; | |
9292 | efix = width; | |
9293 | } else { | |
9294 | goto gotwidth; | |
9295 | } | |
9296 | } | |
9297 | ||
fc36a67e | 9298 | /* FLAGS */ |
9299 | ||
46fc3d4c | 9300 | while (*q) { |
9301 | switch (*q) { | |
9302 | case ' ': | |
9303 | case '+': | |
9304 | plus = *q++; | |
9305 | continue; | |
9306 | ||
9307 | case '-': | |
9308 | left = TRUE; | |
9309 | q++; | |
9310 | continue; | |
9311 | ||
9312 | case '0': | |
9313 | fill = *q++; | |
9314 | continue; | |
9315 | ||
9316 | case '#': | |
9317 | alt = TRUE; | |
9318 | q++; | |
9319 | continue; | |
9320 | ||
fc36a67e | 9321 | default: |
9322 | break; | |
9323 | } | |
9324 | break; | |
9325 | } | |
46fc3d4c | 9326 | |
211dfcf1 | 9327 | tryasterisk: |
eb3fce90 | 9328 | if (*q == '*') { |
211dfcf1 HS |
9329 | q++; |
9330 | if (EXPECT_NUMBER(q, ewix)) | |
9331 | if (*q++ != '$') | |
9332 | goto unknown; | |
eb3fce90 | 9333 | asterisk = TRUE; |
211dfcf1 HS |
9334 | } |
9335 | if (*q == 'v') { | |
eb3fce90 | 9336 | q++; |
211dfcf1 HS |
9337 | if (vectorize) |
9338 | goto unknown; | |
9cbac4c7 | 9339 | if ((vectorarg = asterisk)) { |
211dfcf1 HS |
9340 | evix = ewix; |
9341 | ewix = 0; | |
9342 | asterisk = FALSE; | |
9343 | } | |
9344 | vectorize = TRUE; | |
9345 | goto tryasterisk; | |
eb3fce90 JH |
9346 | } |
9347 | ||
211dfcf1 | 9348 | if (!asterisk) |
f3583277 RB |
9349 | if( *q == '0' ) |
9350 | fill = *q++; | |
211dfcf1 HS |
9351 | EXPECT_NUMBER(q, width); |
9352 | ||
9353 | if (vectorize) { | |
9354 | if (vectorarg) { | |
9355 | if (args) | |
9356 | vecsv = va_arg(*args, SV*); | |
9357 | else | |
9358 | vecsv = (evix ? evix <= svmax : svix < svmax) ? | |
3a7a539e | 9359 | svargs[evix ? evix-1 : svix++] : &PL_sv_undef; |
4459522c | 9360 | dotstr = SvPVx(vecsv, dotstrlen); |
211dfcf1 | 9361 | if (DO_UTF8(vecsv)) |
2cf2cfc6 | 9362 | is_utf8 = TRUE; |
211dfcf1 HS |
9363 | } |
9364 | if (args) { | |
9365 | vecsv = va_arg(*args, SV*); | |
9366 | vecstr = (U8*)SvPVx(vecsv,veclen); | |
2cf2cfc6 | 9367 | vec_utf8 = DO_UTF8(vecsv); |
eb3fce90 | 9368 | } |
211dfcf1 HS |
9369 | else if (efix ? efix <= svmax : svix < svmax) { |
9370 | vecsv = svargs[efix ? efix-1 : svix++]; | |
9371 | vecstr = (U8*)SvPVx(vecsv,veclen); | |
2cf2cfc6 | 9372 | vec_utf8 = DO_UTF8(vecsv); |
211dfcf1 HS |
9373 | } |
9374 | else { | |
9375 | vecstr = (U8*)""; | |
9376 | veclen = 0; | |
9377 | } | |
eb3fce90 | 9378 | } |
fc36a67e | 9379 | |
eb3fce90 | 9380 | if (asterisk) { |
fc36a67e | 9381 | if (args) |
9382 | i = va_arg(*args, int); | |
9383 | else | |
eb3fce90 JH |
9384 | i = (ewix ? ewix <= svmax : svix < svmax) ? |
9385 | SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 9386 | left |= (i < 0); |
9387 | width = (i < 0) ? -i : i; | |
fc36a67e | 9388 | } |
211dfcf1 | 9389 | gotwidth: |
fc36a67e | 9390 | |
9391 | /* PRECISION */ | |
46fc3d4c | 9392 | |
fc36a67e | 9393 | if (*q == '.') { |
9394 | q++; | |
9395 | if (*q == '*') { | |
211dfcf1 | 9396 | q++; |
7b8dd722 HS |
9397 | if (EXPECT_NUMBER(q, epix) && *q++ != '$') |
9398 | goto unknown; | |
9399 | /* XXX: todo, support specified precision parameter */ | |
9400 | if (epix) | |
211dfcf1 | 9401 | goto unknown; |
46fc3d4c | 9402 | if (args) |
9403 | i = va_arg(*args, int); | |
9404 | else | |
eb3fce90 JH |
9405 | i = (ewix ? ewix <= svmax : svix < svmax) |
9406 | ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 9407 | precis = (i < 0) ? 0 : i; |
fc36a67e | 9408 | } |
9409 | else { | |
9410 | precis = 0; | |
9411 | while (isDIGIT(*q)) | |
9412 | precis = precis * 10 + (*q++ - '0'); | |
9413 | } | |
9414 | has_precis = TRUE; | |
9415 | } | |
46fc3d4c | 9416 | |
fc36a67e | 9417 | /* SIZE */ |
46fc3d4c | 9418 | |
fc36a67e | 9419 | switch (*q) { |
c623ac67 GS |
9420 | #ifdef WIN32 |
9421 | case 'I': /* Ix, I32x, and I64x */ | |
9422 | # ifdef WIN64 | |
9423 | if (q[1] == '6' && q[2] == '4') { | |
9424 | q += 3; | |
9425 | intsize = 'q'; | |
9426 | break; | |
9427 | } | |
9428 | # endif | |
9429 | if (q[1] == '3' && q[2] == '2') { | |
9430 | q += 3; | |
9431 | break; | |
9432 | } | |
9433 | # ifdef WIN64 | |
9434 | intsize = 'q'; | |
9435 | # endif | |
9436 | q++; | |
9437 | break; | |
9438 | #endif | |
9e5b023a | 9439 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
6f9bb7fd | 9440 | case 'L': /* Ld */ |
e5c81feb | 9441 | /* FALL THROUGH */ |
e5c81feb | 9442 | #ifdef HAS_QUAD |
6f9bb7fd | 9443 | case 'q': /* qd */ |
9e5b023a | 9444 | #endif |
6f9bb7fd GS |
9445 | intsize = 'q'; |
9446 | q++; | |
9447 | break; | |
9448 | #endif | |
fc36a67e | 9449 | case 'l': |
9e5b023a | 9450 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
205f51d8 | 9451 | if (*(q + 1) == 'l') { /* lld, llf */ |
fc36a67e | 9452 | intsize = 'q'; |
9453 | q += 2; | |
46fc3d4c | 9454 | break; |
cf2093f6 | 9455 | } |
fc36a67e | 9456 | #endif |
6f9bb7fd | 9457 | /* FALL THROUGH */ |
fc36a67e | 9458 | case 'h': |
cf2093f6 | 9459 | /* FALL THROUGH */ |
fc36a67e | 9460 | case 'V': |
9461 | intsize = *q++; | |
46fc3d4c | 9462 | break; |
9463 | } | |
9464 | ||
fc36a67e | 9465 | /* CONVERSION */ |
9466 | ||
211dfcf1 HS |
9467 | if (*q == '%') { |
9468 | eptr = q++; | |
9469 | elen = 1; | |
9470 | goto string; | |
9471 | } | |
9472 | ||
be75b157 HS |
9473 | if (vectorize) |
9474 | argsv = vecsv; | |
9475 | else if (!args) | |
211dfcf1 HS |
9476 | argsv = (efix ? efix <= svmax : svix < svmax) ? |
9477 | svargs[efix ? efix-1 : svix++] : &PL_sv_undef; | |
9478 | ||
46fc3d4c | 9479 | switch (c = *q++) { |
9480 | ||
9481 | /* STRINGS */ | |
9482 | ||
46fc3d4c | 9483 | case 'c': |
be75b157 | 9484 | uv = (args && !vectorize) ? va_arg(*args, int) : SvIVx(argsv); |
1bd104fb JH |
9485 | if ((uv > 255 || |
9486 | (!UNI_IS_INVARIANT(uv) && SvUTF8(sv))) | |
0064a8a9 | 9487 | && !IN_BYTES) { |
dfe13c55 | 9488 | eptr = (char*)utf8buf; |
9041c2e3 | 9489 | elen = uvchr_to_utf8((U8*)eptr, uv) - utf8buf; |
2cf2cfc6 | 9490 | is_utf8 = TRUE; |
7e2040f0 GS |
9491 | } |
9492 | else { | |
9493 | c = (char)uv; | |
9494 | eptr = &c; | |
9495 | elen = 1; | |
a0ed51b3 | 9496 | } |
46fc3d4c | 9497 | goto string; |
9498 | ||
46fc3d4c | 9499 | case 's': |
be75b157 | 9500 | if (args && !vectorize) { |
fc36a67e | 9501 | eptr = va_arg(*args, char*); |
c635e13b | 9502 | if (eptr) |
1d7c1841 GS |
9503 | #ifdef MACOS_TRADITIONAL |
9504 | /* On MacOS, %#s format is used for Pascal strings */ | |
9505 | if (alt) | |
9506 | elen = *eptr++; | |
9507 | else | |
9508 | #endif | |
c635e13b | 9509 | elen = strlen(eptr); |
9510 | else { | |
9511 | eptr = nullstr; | |
9512 | elen = sizeof nullstr - 1; | |
9513 | } | |
46fc3d4c | 9514 | } |
211dfcf1 | 9515 | else { |
7e2040f0 GS |
9516 | eptr = SvPVx(argsv, elen); |
9517 | if (DO_UTF8(argsv)) { | |
a0ed51b3 LW |
9518 | if (has_precis && precis < elen) { |
9519 | I32 p = precis; | |
7e2040f0 | 9520 | sv_pos_u2b(argsv, &p, 0); /* sticks at end */ |
a0ed51b3 LW |
9521 | precis = p; |
9522 | } | |
9523 | if (width) { /* fudge width (can't fudge elen) */ | |
7e2040f0 | 9524 | width += elen - sv_len_utf8(argsv); |
a0ed51b3 | 9525 | } |
2cf2cfc6 | 9526 | is_utf8 = TRUE; |
a0ed51b3 LW |
9527 | } |
9528 | } | |
46fc3d4c | 9529 | goto string; |
9530 | ||
fc36a67e | 9531 | case '_': |
9532 | /* | |
9533 | * The "%_" hack might have to be changed someday, | |
9534 | * if ISO or ANSI decide to use '_' for something. | |
9535 | * So we keep it hidden from users' code. | |
9536 | */ | |
be75b157 | 9537 | if (!args || vectorize) |
fc36a67e | 9538 | goto unknown; |
211dfcf1 | 9539 | argsv = va_arg(*args, SV*); |
7e2040f0 GS |
9540 | eptr = SvPVx(argsv, elen); |
9541 | if (DO_UTF8(argsv)) | |
2cf2cfc6 | 9542 | is_utf8 = TRUE; |
fc36a67e | 9543 | |
46fc3d4c | 9544 | string: |
b22c7a20 | 9545 | vectorize = FALSE; |
46fc3d4c | 9546 | if (has_precis && elen > precis) |
9547 | elen = precis; | |
9548 | break; | |
9549 | ||
9550 | /* INTEGERS */ | |
9551 | ||
fc36a67e | 9552 | case 'p': |
be75b157 | 9553 | if (alt || vectorize) |
c2e66d9e | 9554 | goto unknown; |
211dfcf1 | 9555 | uv = PTR2UV(args ? va_arg(*args, void*) : argsv); |
fc36a67e | 9556 | base = 16; |
9557 | goto integer; | |
9558 | ||
46fc3d4c | 9559 | case 'D': |
29fe7a80 | 9560 | #ifdef IV_IS_QUAD |
22f3ae8c | 9561 | intsize = 'q'; |
29fe7a80 | 9562 | #else |
46fc3d4c | 9563 | intsize = 'l'; |
29fe7a80 | 9564 | #endif |
46fc3d4c | 9565 | /* FALL THROUGH */ |
9566 | case 'd': | |
9567 | case 'i': | |
b22c7a20 | 9568 | if (vectorize) { |
ba210ebe | 9569 | STRLEN ulen; |
211dfcf1 HS |
9570 | if (!veclen) |
9571 | continue; | |
2cf2cfc6 A |
9572 | if (vec_utf8) |
9573 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
9574 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 9575 | else { |
e83d50c9 | 9576 | uv = *vecstr; |
b22c7a20 GS |
9577 | ulen = 1; |
9578 | } | |
9579 | vecstr += ulen; | |
9580 | veclen -= ulen; | |
e83d50c9 JP |
9581 | if (plus) |
9582 | esignbuf[esignlen++] = plus; | |
b22c7a20 GS |
9583 | } |
9584 | else if (args) { | |
46fc3d4c | 9585 | switch (intsize) { |
9586 | case 'h': iv = (short)va_arg(*args, int); break; | |
46fc3d4c | 9587 | case 'l': iv = va_arg(*args, long); break; |
fc36a67e | 9588 | case 'V': iv = va_arg(*args, IV); break; |
b10c0dba | 9589 | default: iv = va_arg(*args, int); break; |
cf2093f6 JH |
9590 | #ifdef HAS_QUAD |
9591 | case 'q': iv = va_arg(*args, Quad_t); break; | |
9592 | #endif | |
46fc3d4c | 9593 | } |
9594 | } | |
9595 | else { | |
b10c0dba | 9596 | IV tiv = SvIVx(argsv); /* work around GCC bug #13488 */ |
46fc3d4c | 9597 | switch (intsize) { |
b10c0dba MHM |
9598 | case 'h': iv = (short)tiv; break; |
9599 | case 'l': iv = (long)tiv; break; | |
9600 | case 'V': | |
9601 | default: iv = tiv; break; | |
cf2093f6 | 9602 | #ifdef HAS_QUAD |
b10c0dba | 9603 | case 'q': iv = (Quad_t)tiv; break; |
cf2093f6 | 9604 | #endif |
46fc3d4c | 9605 | } |
9606 | } | |
e83d50c9 JP |
9607 | if ( !vectorize ) /* we already set uv above */ |
9608 | { | |
9609 | if (iv >= 0) { | |
9610 | uv = iv; | |
9611 | if (plus) | |
9612 | esignbuf[esignlen++] = plus; | |
9613 | } | |
9614 | else { | |
9615 | uv = -iv; | |
9616 | esignbuf[esignlen++] = '-'; | |
9617 | } | |
46fc3d4c | 9618 | } |
9619 | base = 10; | |
9620 | goto integer; | |
9621 | ||
fc36a67e | 9622 | case 'U': |
29fe7a80 | 9623 | #ifdef IV_IS_QUAD |
22f3ae8c | 9624 | intsize = 'q'; |
29fe7a80 | 9625 | #else |
fc36a67e | 9626 | intsize = 'l'; |
29fe7a80 | 9627 | #endif |
fc36a67e | 9628 | /* FALL THROUGH */ |
9629 | case 'u': | |
9630 | base = 10; | |
9631 | goto uns_integer; | |
9632 | ||
4f19785b WSI |
9633 | case 'b': |
9634 | base = 2; | |
9635 | goto uns_integer; | |
9636 | ||
46fc3d4c | 9637 | case 'O': |
29fe7a80 | 9638 | #ifdef IV_IS_QUAD |
22f3ae8c | 9639 | intsize = 'q'; |
29fe7a80 | 9640 | #else |
46fc3d4c | 9641 | intsize = 'l'; |
29fe7a80 | 9642 | #endif |
46fc3d4c | 9643 | /* FALL THROUGH */ |
9644 | case 'o': | |
9645 | base = 8; | |
9646 | goto uns_integer; | |
9647 | ||
9648 | case 'X': | |
46fc3d4c | 9649 | case 'x': |
9650 | base = 16; | |
46fc3d4c | 9651 | |
9652 | uns_integer: | |
b22c7a20 | 9653 | if (vectorize) { |
ba210ebe | 9654 | STRLEN ulen; |
b22c7a20 | 9655 | vector: |
211dfcf1 HS |
9656 | if (!veclen) |
9657 | continue; | |
2cf2cfc6 A |
9658 | if (vec_utf8) |
9659 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
9660 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 9661 | else { |
a05b299f | 9662 | uv = *vecstr; |
b22c7a20 GS |
9663 | ulen = 1; |
9664 | } | |
9665 | vecstr += ulen; | |
9666 | veclen -= ulen; | |
9667 | } | |
9668 | else if (args) { | |
46fc3d4c | 9669 | switch (intsize) { |
9670 | case 'h': uv = (unsigned short)va_arg(*args, unsigned); break; | |
46fc3d4c | 9671 | case 'l': uv = va_arg(*args, unsigned long); break; |
fc36a67e | 9672 | case 'V': uv = va_arg(*args, UV); break; |
b10c0dba | 9673 | default: uv = va_arg(*args, unsigned); break; |
cf2093f6 | 9674 | #ifdef HAS_QUAD |
9e3321a5 | 9675 | case 'q': uv = va_arg(*args, Uquad_t); break; |
cf2093f6 | 9676 | #endif |
46fc3d4c | 9677 | } |
9678 | } | |
9679 | else { | |
b10c0dba | 9680 | UV tuv = SvUVx(argsv); /* work around GCC bug #13488 */ |
46fc3d4c | 9681 | switch (intsize) { |
b10c0dba MHM |
9682 | case 'h': uv = (unsigned short)tuv; break; |
9683 | case 'l': uv = (unsigned long)tuv; break; | |
9684 | case 'V': | |
9685 | default: uv = tuv; break; | |
cf2093f6 | 9686 | #ifdef HAS_QUAD |
b10c0dba | 9687 | case 'q': uv = (Uquad_t)tuv; break; |
cf2093f6 | 9688 | #endif |
46fc3d4c | 9689 | } |
9690 | } | |
9691 | ||
9692 | integer: | |
46fc3d4c | 9693 | eptr = ebuf + sizeof ebuf; |
fc36a67e | 9694 | switch (base) { |
9695 | unsigned dig; | |
9696 | case 16: | |
c10ed8b9 HS |
9697 | if (!uv) |
9698 | alt = FALSE; | |
1d7c1841 GS |
9699 | p = (char*)((c == 'X') |
9700 | ? "0123456789ABCDEF" : "0123456789abcdef"); | |
fc36a67e | 9701 | do { |
9702 | dig = uv & 15; | |
9703 | *--eptr = p[dig]; | |
9704 | } while (uv >>= 4); | |
9705 | if (alt) { | |
46fc3d4c | 9706 | esignbuf[esignlen++] = '0'; |
fc36a67e | 9707 | esignbuf[esignlen++] = c; /* 'x' or 'X' */ |
46fc3d4c | 9708 | } |
fc36a67e | 9709 | break; |
9710 | case 8: | |
9711 | do { | |
9712 | dig = uv & 7; | |
9713 | *--eptr = '0' + dig; | |
9714 | } while (uv >>= 3); | |
9715 | if (alt && *eptr != '0') | |
9716 | *--eptr = '0'; | |
9717 | break; | |
4f19785b WSI |
9718 | case 2: |
9719 | do { | |
9720 | dig = uv & 1; | |
9721 | *--eptr = '0' + dig; | |
9722 | } while (uv >>= 1); | |
eda88b6d JH |
9723 | if (alt) { |
9724 | esignbuf[esignlen++] = '0'; | |
7481bb52 | 9725 | esignbuf[esignlen++] = 'b'; |
eda88b6d | 9726 | } |
4f19785b | 9727 | break; |
fc36a67e | 9728 | default: /* it had better be ten or less */ |
6bc102ca | 9729 | #if defined(PERL_Y2KWARN) |
e476b1b5 | 9730 | if (ckWARN(WARN_Y2K)) { |
6bc102ca GS |
9731 | STRLEN n; |
9732 | char *s = SvPV(sv,n); | |
9733 | if (n >= 2 && s[n-2] == '1' && s[n-1] == '9' | |
9734 | && (n == 2 || !isDIGIT(s[n-3]))) | |
9735 | { | |
9014280d | 9736 | Perl_warner(aTHX_ packWARN(WARN_Y2K), |
6bc102ca GS |
9737 | "Possible Y2K bug: %%%c %s", |
9738 | c, "format string following '19'"); | |
9739 | } | |
9740 | } | |
9741 | #endif | |
fc36a67e | 9742 | do { |
9743 | dig = uv % base; | |
9744 | *--eptr = '0' + dig; | |
9745 | } while (uv /= base); | |
9746 | break; | |
46fc3d4c | 9747 | } |
9748 | elen = (ebuf + sizeof ebuf) - eptr; | |
c10ed8b9 HS |
9749 | if (has_precis) { |
9750 | if (precis > elen) | |
9751 | zeros = precis - elen; | |
9752 | else if (precis == 0 && elen == 1 && *eptr == '0') | |
9753 | elen = 0; | |
9754 | } | |
46fc3d4c | 9755 | break; |
9756 | ||
9757 | /* FLOATING POINT */ | |
9758 | ||
fc36a67e | 9759 | case 'F': |
9760 | c = 'f'; /* maybe %F isn't supported here */ | |
9761 | /* FALL THROUGH */ | |
46fc3d4c | 9762 | case 'e': case 'E': |
fc36a67e | 9763 | case 'f': |
46fc3d4c | 9764 | case 'g': case 'G': |
9765 | ||
9766 | /* This is evil, but floating point is even more evil */ | |
9767 | ||
9e5b023a JH |
9768 | /* for SV-style calling, we can only get NV |
9769 | for C-style calling, we assume %f is double; | |
9770 | for simplicity we allow any of %Lf, %llf, %qf for long double | |
9771 | */ | |
9772 | switch (intsize) { | |
9773 | case 'V': | |
9774 | #if defined(USE_LONG_DOUBLE) | |
9775 | intsize = 'q'; | |
9776 | #endif | |
9777 | break; | |
8a2e3f14 | 9778 | /* [perl #20339] - we should accept and ignore %lf rather than die */ |
00e17364 HS |
9779 | case 'l': |
9780 | /* FALL THROUGH */ | |
9e5b023a JH |
9781 | default: |
9782 | #if defined(USE_LONG_DOUBLE) | |
9783 | intsize = args ? 0 : 'q'; | |
9784 | #endif | |
9785 | break; | |
9786 | case 'q': | |
9787 | #if defined(HAS_LONG_DOUBLE) | |
9788 | break; | |
9789 | #else | |
9790 | /* FALL THROUGH */ | |
9791 | #endif | |
9792 | case 'h': | |
9e5b023a JH |
9793 | goto unknown; |
9794 | } | |
9795 | ||
9796 | /* now we need (long double) if intsize == 'q', else (double) */ | |
be75b157 | 9797 | nv = (args && !vectorize) ? |
35fff930 JH |
9798 | #if LONG_DOUBLESIZE > DOUBLESIZE |
9799 | intsize == 'q' ? | |
205f51d8 AS |
9800 | va_arg(*args, long double) : |
9801 | va_arg(*args, double) | |
35fff930 | 9802 | #else |
205f51d8 | 9803 | va_arg(*args, double) |
35fff930 | 9804 | #endif |
9e5b023a | 9805 | : SvNVx(argsv); |
fc36a67e | 9806 | |
9807 | need = 0; | |
be75b157 | 9808 | vectorize = FALSE; |
fc36a67e | 9809 | if (c != 'e' && c != 'E') { |
9810 | i = PERL_INT_MIN; | |
9e5b023a JH |
9811 | /* FIXME: if HAS_LONG_DOUBLE but not USE_LONG_DOUBLE this |
9812 | will cast our (long double) to (double) */ | |
73b309ea | 9813 | (void)Perl_frexp(nv, &i); |
fc36a67e | 9814 | if (i == PERL_INT_MIN) |
cea2e8a9 | 9815 | Perl_die(aTHX_ "panic: frexp"); |
c635e13b | 9816 | if (i > 0) |
fc36a67e | 9817 | need = BIT_DIGITS(i); |
9818 | } | |
9819 | need += has_precis ? precis : 6; /* known default */ | |
20f6aaab | 9820 | |
fc36a67e | 9821 | if (need < width) |
9822 | need = width; | |
9823 | ||
20f6aaab AS |
9824 | #ifdef HAS_LDBL_SPRINTF_BUG |
9825 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 AS |
9826 | with sfio - Allen <allens@cpan.org> */ |
9827 | ||
9828 | # ifdef DBL_MAX | |
9829 | # define MY_DBL_MAX DBL_MAX | |
9830 | # else /* XXX guessing! HUGE_VAL may be defined as infinity, so not using */ | |
9831 | # if DOUBLESIZE >= 8 | |
9832 | # define MY_DBL_MAX 1.7976931348623157E+308L | |
9833 | # else | |
9834 | # define MY_DBL_MAX 3.40282347E+38L | |
9835 | # endif | |
9836 | # endif | |
9837 | ||
9838 | # ifdef HAS_LDBL_SPRINTF_BUG_LESS1 /* only between -1L & 1L - Allen */ | |
9839 | # define MY_DBL_MAX_BUG 1L | |
20f6aaab | 9840 | # else |
205f51d8 | 9841 | # define MY_DBL_MAX_BUG MY_DBL_MAX |
20f6aaab | 9842 | # endif |
20f6aaab | 9843 | |
205f51d8 AS |
9844 | # ifdef DBL_MIN |
9845 | # define MY_DBL_MIN DBL_MIN | |
9846 | # else /* XXX guessing! -Allen */ | |
9847 | # if DOUBLESIZE >= 8 | |
9848 | # define MY_DBL_MIN 2.2250738585072014E-308L | |
9849 | # else | |
9850 | # define MY_DBL_MIN 1.17549435E-38L | |
9851 | # endif | |
9852 | # endif | |
20f6aaab | 9853 | |
205f51d8 AS |
9854 | if ((intsize == 'q') && (c == 'f') && |
9855 | ((nv < MY_DBL_MAX_BUG) && (nv > -MY_DBL_MAX_BUG)) && | |
9856 | (need < DBL_DIG)) { | |
9857 | /* it's going to be short enough that | |
9858 | * long double precision is not needed */ | |
9859 | ||
9860 | if ((nv <= 0L) && (nv >= -0L)) | |
9861 | fix_ldbl_sprintf_bug = TRUE; /* 0 is 0 - easiest */ | |
9862 | else { | |
9863 | /* would use Perl_fp_class as a double-check but not | |
9864 | * functional on IRIX - see perl.h comments */ | |
9865 | ||
9866 | if ((nv >= MY_DBL_MIN) || (nv <= -MY_DBL_MIN)) { | |
9867 | /* It's within the range that a double can represent */ | |
9868 | #if defined(DBL_MAX) && !defined(DBL_MIN) | |
9869 | if ((nv >= ((long double)1/DBL_MAX)) || | |
9870 | (nv <= (-(long double)1/DBL_MAX))) | |
20f6aaab | 9871 | #endif |
205f51d8 | 9872 | fix_ldbl_sprintf_bug = TRUE; |
20f6aaab | 9873 | } |
205f51d8 AS |
9874 | } |
9875 | if (fix_ldbl_sprintf_bug == TRUE) { | |
9876 | double temp; | |
9877 | ||
9878 | intsize = 0; | |
9879 | temp = (double)nv; | |
9880 | nv = (NV)temp; | |
9881 | } | |
20f6aaab | 9882 | } |
205f51d8 AS |
9883 | |
9884 | # undef MY_DBL_MAX | |
9885 | # undef MY_DBL_MAX_BUG | |
9886 | # undef MY_DBL_MIN | |
9887 | ||
20f6aaab AS |
9888 | #endif /* HAS_LDBL_SPRINTF_BUG */ |
9889 | ||
46fc3d4c | 9890 | need += 20; /* fudge factor */ |
80252599 GS |
9891 | if (PL_efloatsize < need) { |
9892 | Safefree(PL_efloatbuf); | |
9893 | PL_efloatsize = need + 20; /* more fudge */ | |
9894 | New(906, PL_efloatbuf, PL_efloatsize, char); | |
7d5ea4e7 | 9895 | PL_efloatbuf[0] = '\0'; |
46fc3d4c | 9896 | } |
9897 | ||
4151a5fe IZ |
9898 | if ( !(width || left || plus || alt) && fill != '0' |
9899 | && has_precis && intsize != 'q' ) { /* Shortcuts */ | |
2873255c NC |
9900 | /* See earlier comment about buggy Gconvert when digits, |
9901 | aka precis is 0 */ | |
9902 | if ( c == 'g' && precis) { | |
2e59c212 | 9903 | Gconvert((NV)nv, (int)precis, 0, PL_efloatbuf); |
4151a5fe IZ |
9904 | if (*PL_efloatbuf) /* May return an empty string for digits==0 */ |
9905 | goto float_converted; | |
9906 | } else if ( c == 'f' && !precis) { | |
9907 | if ((eptr = F0convert(nv, ebuf + sizeof ebuf, &elen))) | |
9908 | break; | |
9909 | } | |
9910 | } | |
46fc3d4c | 9911 | eptr = ebuf + sizeof ebuf; |
9912 | *--eptr = '\0'; | |
9913 | *--eptr = c; | |
9e5b023a JH |
9914 | /* FIXME: what to do if HAS_LONG_DOUBLE but not PERL_PRIfldbl? */ |
9915 | #if defined(HAS_LONG_DOUBLE) && defined(PERL_PRIfldbl) | |
9916 | if (intsize == 'q') { | |
e5c81feb JH |
9917 | /* Copy the one or more characters in a long double |
9918 | * format before the 'base' ([efgEFG]) character to | |
9919 | * the format string. */ | |
9920 | static char const prifldbl[] = PERL_PRIfldbl; | |
9921 | char const *p = prifldbl + sizeof(prifldbl) - 3; | |
9922 | while (p >= prifldbl) { *--eptr = *p--; } | |
cf2093f6 | 9923 | } |
65202027 | 9924 | #endif |
46fc3d4c | 9925 | if (has_precis) { |
9926 | base = precis; | |
9927 | do { *--eptr = '0' + (base % 10); } while (base /= 10); | |
9928 | *--eptr = '.'; | |
9929 | } | |
9930 | if (width) { | |
9931 | base = width; | |
9932 | do { *--eptr = '0' + (base % 10); } while (base /= 10); | |
9933 | } | |
9934 | if (fill == '0') | |
9935 | *--eptr = fill; | |
84902520 TB |
9936 | if (left) |
9937 | *--eptr = '-'; | |
46fc3d4c | 9938 | if (plus) |
9939 | *--eptr = plus; | |
9940 | if (alt) | |
9941 | *--eptr = '#'; | |
9942 | *--eptr = '%'; | |
9943 | ||
ff9121f8 JH |
9944 | /* No taint. Otherwise we are in the strange situation |
9945 | * where printf() taints but print($float) doesn't. | |
bda0f7a5 | 9946 | * --jhi */ |
9e5b023a JH |
9947 | #if defined(HAS_LONG_DOUBLE) |
9948 | if (intsize == 'q') | |
9949 | (void)sprintf(PL_efloatbuf, eptr, nv); | |
9950 | else | |
9951 | (void)sprintf(PL_efloatbuf, eptr, (double)nv); | |
9952 | #else | |
dd8482fc | 9953 | (void)sprintf(PL_efloatbuf, eptr, nv); |
9e5b023a | 9954 | #endif |
4151a5fe | 9955 | float_converted: |
80252599 GS |
9956 | eptr = PL_efloatbuf; |
9957 | elen = strlen(PL_efloatbuf); | |
46fc3d4c | 9958 | break; |
9959 | ||
fc36a67e | 9960 | /* SPECIAL */ |
9961 | ||
9962 | case 'n': | |
9963 | i = SvCUR(sv) - origlen; | |
be75b157 | 9964 | if (args && !vectorize) { |
c635e13b | 9965 | switch (intsize) { |
9966 | case 'h': *(va_arg(*args, short*)) = i; break; | |
9967 | default: *(va_arg(*args, int*)) = i; break; | |
9968 | case 'l': *(va_arg(*args, long*)) = i; break; | |
9969 | case 'V': *(va_arg(*args, IV*)) = i; break; | |
cf2093f6 JH |
9970 | #ifdef HAS_QUAD |
9971 | case 'q': *(va_arg(*args, Quad_t*)) = i; break; | |
9972 | #endif | |
c635e13b | 9973 | } |
fc36a67e | 9974 | } |
9dd79c3f | 9975 | else |
211dfcf1 | 9976 | sv_setuv_mg(argsv, (UV)i); |
be75b157 | 9977 | vectorize = FALSE; |
fc36a67e | 9978 | continue; /* not "break" */ |
9979 | ||
9980 | /* UNKNOWN */ | |
9981 | ||
46fc3d4c | 9982 | default: |
fc36a67e | 9983 | unknown: |
599cee73 | 9984 | if (!args && ckWARN(WARN_PRINTF) && |
533c011a | 9985 | (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) { |
c635e13b | 9986 | SV *msg = sv_newmortal(); |
35c1215d NC |
9987 | Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %sprintf: ", |
9988 | (PL_op->op_type == OP_PRTF) ? "" : "s"); | |
0f4b6630 | 9989 | if (c) { |
0f4b6630 | 9990 | if (isPRINT(c)) |
1c846c1f | 9991 | Perl_sv_catpvf(aTHX_ msg, |
0f4b6630 JH |
9992 | "\"%%%c\"", c & 0xFF); |
9993 | else | |
9994 | Perl_sv_catpvf(aTHX_ msg, | |
57def98f | 9995 | "\"%%\\%03"UVof"\"", |
0f4b6630 | 9996 | (UV)c & 0xFF); |
0f4b6630 | 9997 | } else |
c635e13b | 9998 | sv_catpv(msg, "end of string"); |
9014280d | 9999 | Perl_warner(aTHX_ packWARN(WARN_PRINTF), "%"SVf, msg); /* yes, this is reentrant */ |
c635e13b | 10000 | } |
fb73857a | 10001 | |
10002 | /* output mangled stuff ... */ | |
10003 | if (c == '\0') | |
10004 | --q; | |
46fc3d4c | 10005 | eptr = p; |
10006 | elen = q - p; | |
fb73857a | 10007 | |
10008 | /* ... right here, because formatting flags should not apply */ | |
10009 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
10010 | p = SvEND(sv); | |
4459522c | 10011 | Copy(eptr, p, elen, char); |
fb73857a | 10012 | p += elen; |
10013 | *p = '\0'; | |
10014 | SvCUR(sv) = p - SvPVX(sv); | |
58e33a90 | 10015 | svix = osvix; |
fb73857a | 10016 | continue; /* not "break" */ |
46fc3d4c | 10017 | } |
10018 | ||
6c94ec8b HS |
10019 | /* calculate width before utf8_upgrade changes it */ |
10020 | have = esignlen + zeros + elen; | |
10021 | ||
d2876be5 JH |
10022 | if (is_utf8 != has_utf8) { |
10023 | if (is_utf8) { | |
10024 | if (SvCUR(sv)) | |
10025 | sv_utf8_upgrade(sv); | |
10026 | } | |
10027 | else { | |
10028 | SV *nsv = sv_2mortal(newSVpvn(eptr, elen)); | |
10029 | sv_utf8_upgrade(nsv); | |
10030 | eptr = SvPVX(nsv); | |
10031 | elen = SvCUR(nsv); | |
10032 | } | |
10033 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
10034 | p = SvEND(sv); | |
10035 | *p = '\0'; | |
10036 | } | |
94330da2 MHM |
10037 | /* Use memchr() instead of strchr(), as eptr is not guaranteed */ |
10038 | /* to point to a null-terminated string. */ | |
10039 | if (left && ckWARN(WARN_PRINTF) && memchr(eptr, '\n', elen) && | |
dca6e23f RB |
10040 | (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) |
10041 | Perl_warner(aTHX_ packWARN(WARN_PRINTF), | |
10042 | "Newline in left-justified string for %sprintf", | |
10043 | (PL_op->op_type == OP_PRTF) ? "" : "s"); | |
d2876be5 | 10044 | |
46fc3d4c | 10045 | need = (have > width ? have : width); |
10046 | gap = need - have; | |
10047 | ||
b22c7a20 | 10048 | SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1); |
46fc3d4c | 10049 | p = SvEND(sv); |
10050 | if (esignlen && fill == '0') { | |
eb160463 | 10051 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 10052 | *p++ = esignbuf[i]; |
10053 | } | |
10054 | if (gap && !left) { | |
10055 | memset(p, fill, gap); | |
10056 | p += gap; | |
10057 | } | |
10058 | if (esignlen && fill != '0') { | |
eb160463 | 10059 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 10060 | *p++ = esignbuf[i]; |
10061 | } | |
fc36a67e | 10062 | if (zeros) { |
10063 | for (i = zeros; i; i--) | |
10064 | *p++ = '0'; | |
10065 | } | |
46fc3d4c | 10066 | if (elen) { |
4459522c | 10067 | Copy(eptr, p, elen, char); |
46fc3d4c | 10068 | p += elen; |
10069 | } | |
10070 | if (gap && left) { | |
10071 | memset(p, ' ', gap); | |
10072 | p += gap; | |
10073 | } | |
b22c7a20 GS |
10074 | if (vectorize) { |
10075 | if (veclen) { | |
4459522c | 10076 | Copy(dotstr, p, dotstrlen, char); |
b22c7a20 GS |
10077 | p += dotstrlen; |
10078 | } | |
10079 | else | |
10080 | vectorize = FALSE; /* done iterating over vecstr */ | |
10081 | } | |
2cf2cfc6 A |
10082 | if (is_utf8) |
10083 | has_utf8 = TRUE; | |
10084 | if (has_utf8) | |
7e2040f0 | 10085 | SvUTF8_on(sv); |
46fc3d4c | 10086 | *p = '\0'; |
10087 | SvCUR(sv) = p - SvPVX(sv); | |
b22c7a20 GS |
10088 | if (vectorize) { |
10089 | esignlen = 0; | |
10090 | goto vector; | |
10091 | } | |
46fc3d4c | 10092 | } |
10093 | } | |
51371543 | 10094 | |
645c22ef DM |
10095 | /* ========================================================================= |
10096 | ||
10097 | =head1 Cloning an interpreter | |
10098 | ||
10099 | All the macros and functions in this section are for the private use of | |
10100 | the main function, perl_clone(). | |
10101 | ||
10102 | The foo_dup() functions make an exact copy of an existing foo thinngy. | |
10103 | During the course of a cloning, a hash table is used to map old addresses | |
10104 | to new addresses. The table is created and manipulated with the | |
10105 | ptr_table_* functions. | |
10106 | ||
10107 | =cut | |
10108 | ||
10109 | ============================================================================*/ | |
10110 | ||
10111 | ||
1d7c1841 GS |
10112 | #if defined(USE_ITHREADS) |
10113 | ||
1d7c1841 GS |
10114 | #ifndef GpREFCNT_inc |
10115 | # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL) | |
10116 | #endif | |
10117 | ||
10118 | ||
d2d73c3e AB |
10119 | #define sv_dup_inc(s,t) SvREFCNT_inc(sv_dup(s,t)) |
10120 | #define av_dup(s,t) (AV*)sv_dup((SV*)s,t) | |
10121 | #define av_dup_inc(s,t) (AV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
10122 | #define hv_dup(s,t) (HV*)sv_dup((SV*)s,t) | |
10123 | #define hv_dup_inc(s,t) (HV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
10124 | #define cv_dup(s,t) (CV*)sv_dup((SV*)s,t) | |
10125 | #define cv_dup_inc(s,t) (CV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
10126 | #define io_dup(s,t) (IO*)sv_dup((SV*)s,t) | |
10127 | #define io_dup_inc(s,t) (IO*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
10128 | #define gv_dup(s,t) (GV*)sv_dup((SV*)s,t) | |
10129 | #define gv_dup_inc(s,t) (GV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
1d7c1841 GS |
10130 | #define SAVEPV(p) (p ? savepv(p) : Nullch) |
10131 | #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch) | |
8cf8f3d1 | 10132 | |
d2d73c3e | 10133 | |
d2f185dc AMS |
10134 | /* Duplicate a regexp. Required reading: pregcomp() and pregfree() in |
10135 | regcomp.c. AMS 20010712 */ | |
645c22ef | 10136 | |
1d7c1841 | 10137 | REGEXP * |
a8fc9800 | 10138 | Perl_re_dup(pTHX_ REGEXP *r, CLONE_PARAMS *param) |
1d7c1841 | 10139 | { |
d2f185dc AMS |
10140 | REGEXP *ret; |
10141 | int i, len, npar; | |
10142 | struct reg_substr_datum *s; | |
10143 | ||
10144 | if (!r) | |
10145 | return (REGEXP *)NULL; | |
10146 | ||
10147 | if ((ret = (REGEXP *)ptr_table_fetch(PL_ptr_table, r))) | |
10148 | return ret; | |
10149 | ||
10150 | len = r->offsets[0]; | |
10151 | npar = r->nparens+1; | |
10152 | ||
10153 | Newc(0, ret, sizeof(regexp) + (len+1)*sizeof(regnode), char, regexp); | |
10154 | Copy(r->program, ret->program, len+1, regnode); | |
10155 | ||
10156 | New(0, ret->startp, npar, I32); | |
10157 | Copy(r->startp, ret->startp, npar, I32); | |
10158 | New(0, ret->endp, npar, I32); | |
10159 | Copy(r->startp, ret->startp, npar, I32); | |
10160 | ||
d2f185dc AMS |
10161 | New(0, ret->substrs, 1, struct reg_substr_data); |
10162 | for (s = ret->substrs->data, i = 0; i < 3; i++, s++) { | |
10163 | s->min_offset = r->substrs->data[i].min_offset; | |
10164 | s->max_offset = r->substrs->data[i].max_offset; | |
10165 | s->substr = sv_dup_inc(r->substrs->data[i].substr, param); | |
33b8afdf | 10166 | s->utf8_substr = sv_dup_inc(r->substrs->data[i].utf8_substr, param); |
d2f185dc AMS |
10167 | } |
10168 | ||
70612e96 | 10169 | ret->regstclass = NULL; |
d2f185dc AMS |
10170 | if (r->data) { |
10171 | struct reg_data *d; | |
10172 | int count = r->data->count; | |
10173 | ||
10174 | Newc(0, d, sizeof(struct reg_data) + count*sizeof(void *), | |
10175 | char, struct reg_data); | |
10176 | New(0, d->what, count, U8); | |
10177 | ||
10178 | d->count = count; | |
10179 | for (i = 0; i < count; i++) { | |
10180 | d->what[i] = r->data->what[i]; | |
10181 | switch (d->what[i]) { | |
10182 | case 's': | |
10183 | d->data[i] = sv_dup_inc((SV *)r->data->data[i], param); | |
10184 | break; | |
10185 | case 'p': | |
10186 | d->data[i] = av_dup_inc((AV *)r->data->data[i], param); | |
10187 | break; | |
10188 | case 'f': | |
10189 | /* This is cheating. */ | |
10190 | New(0, d->data[i], 1, struct regnode_charclass_class); | |
10191 | StructCopy(r->data->data[i], d->data[i], | |
10192 | struct regnode_charclass_class); | |
70612e96 | 10193 | ret->regstclass = (regnode*)d->data[i]; |
d2f185dc AMS |
10194 | break; |
10195 | case 'o': | |
33773810 AMS |
10196 | /* Compiled op trees are readonly, and can thus be |
10197 | shared without duplication. */ | |
9b978d73 DM |
10198 | d->data[i] = (void*)OpREFCNT_inc((OP*)r->data->data[i]); |
10199 | break; | |
d2f185dc AMS |
10200 | case 'n': |
10201 | d->data[i] = r->data->data[i]; | |
10202 | break; | |
10203 | } | |
10204 | } | |
10205 | ||
10206 | ret->data = d; | |
10207 | } | |
10208 | else | |
10209 | ret->data = NULL; | |
10210 | ||
10211 | New(0, ret->offsets, 2*len+1, U32); | |
10212 | Copy(r->offsets, ret->offsets, 2*len+1, U32); | |
10213 | ||
e01c5899 | 10214 | ret->precomp = SAVEPVN(r->precomp, r->prelen); |
d2f185dc AMS |
10215 | ret->refcnt = r->refcnt; |
10216 | ret->minlen = r->minlen; | |
10217 | ret->prelen = r->prelen; | |
10218 | ret->nparens = r->nparens; | |
10219 | ret->lastparen = r->lastparen; | |
10220 | ret->lastcloseparen = r->lastcloseparen; | |
10221 | ret->reganch = r->reganch; | |
10222 | ||
70612e96 RG |
10223 | ret->sublen = r->sublen; |
10224 | ||
10225 | if (RX_MATCH_COPIED(ret)) | |
e01c5899 | 10226 | ret->subbeg = SAVEPVN(r->subbeg, r->sublen); |
70612e96 RG |
10227 | else |
10228 | ret->subbeg = Nullch; | |
9a26048b NC |
10229 | #ifdef PERL_COPY_ON_WRITE |
10230 | ret->saved_copy = Nullsv; | |
10231 | #endif | |
70612e96 | 10232 | |
d2f185dc AMS |
10233 | ptr_table_store(PL_ptr_table, r, ret); |
10234 | return ret; | |
1d7c1841 GS |
10235 | } |
10236 | ||
d2d73c3e | 10237 | /* duplicate a file handle */ |
645c22ef | 10238 | |
1d7c1841 | 10239 | PerlIO * |
a8fc9800 | 10240 | Perl_fp_dup(pTHX_ PerlIO *fp, char type, CLONE_PARAMS *param) |
1d7c1841 GS |
10241 | { |
10242 | PerlIO *ret; | |
10243 | if (!fp) | |
10244 | return (PerlIO*)NULL; | |
10245 | ||
10246 | /* look for it in the table first */ | |
10247 | ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp); | |
10248 | if (ret) | |
10249 | return ret; | |
10250 | ||
10251 | /* create anew and remember what it is */ | |
ecdeb87c | 10252 | ret = PerlIO_fdupopen(aTHX_ fp, param, PERLIO_DUP_CLONE); |
1d7c1841 GS |
10253 | ptr_table_store(PL_ptr_table, fp, ret); |
10254 | return ret; | |
10255 | } | |
10256 | ||
645c22ef DM |
10257 | /* duplicate a directory handle */ |
10258 | ||
1d7c1841 GS |
10259 | DIR * |
10260 | Perl_dirp_dup(pTHX_ DIR *dp) | |
10261 | { | |
10262 | if (!dp) | |
10263 | return (DIR*)NULL; | |
10264 | /* XXX TODO */ | |
10265 | return dp; | |
10266 | } | |
10267 | ||
ff276b08 | 10268 | /* duplicate a typeglob */ |
645c22ef | 10269 | |
1d7c1841 | 10270 | GP * |
a8fc9800 | 10271 | Perl_gp_dup(pTHX_ GP *gp, CLONE_PARAMS* param) |
1d7c1841 GS |
10272 | { |
10273 | GP *ret; | |
10274 | if (!gp) | |
10275 | return (GP*)NULL; | |
10276 | /* look for it in the table first */ | |
10277 | ret = (GP*)ptr_table_fetch(PL_ptr_table, gp); | |
10278 | if (ret) | |
10279 | return ret; | |
10280 | ||
10281 | /* create anew and remember what it is */ | |
10282 | Newz(0, ret, 1, GP); | |
10283 | ptr_table_store(PL_ptr_table, gp, ret); | |
10284 | ||
10285 | /* clone */ | |
10286 | ret->gp_refcnt = 0; /* must be before any other dups! */ | |
d2d73c3e AB |
10287 | ret->gp_sv = sv_dup_inc(gp->gp_sv, param); |
10288 | ret->gp_io = io_dup_inc(gp->gp_io, param); | |
10289 | ret->gp_form = cv_dup_inc(gp->gp_form, param); | |
10290 | ret->gp_av = av_dup_inc(gp->gp_av, param); | |
10291 | ret->gp_hv = hv_dup_inc(gp->gp_hv, param); | |
10292 | ret->gp_egv = gv_dup(gp->gp_egv, param);/* GvEGV is not refcounted */ | |
10293 | ret->gp_cv = cv_dup_inc(gp->gp_cv, param); | |
1d7c1841 GS |
10294 | ret->gp_cvgen = gp->gp_cvgen; |
10295 | ret->gp_flags = gp->gp_flags; | |
10296 | ret->gp_line = gp->gp_line; | |
10297 | ret->gp_file = gp->gp_file; /* points to COP.cop_file */ | |
10298 | return ret; | |
10299 | } | |
10300 | ||
645c22ef DM |
10301 | /* duplicate a chain of magic */ |
10302 | ||
1d7c1841 | 10303 | MAGIC * |
a8fc9800 | 10304 | Perl_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS* param) |
1d7c1841 | 10305 | { |
cb359b41 JH |
10306 | MAGIC *mgprev = (MAGIC*)NULL; |
10307 | MAGIC *mgret; | |
1d7c1841 GS |
10308 | if (!mg) |
10309 | return (MAGIC*)NULL; | |
10310 | /* look for it in the table first */ | |
10311 | mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg); | |
10312 | if (mgret) | |
10313 | return mgret; | |
10314 | ||
10315 | for (; mg; mg = mg->mg_moremagic) { | |
10316 | MAGIC *nmg; | |
10317 | Newz(0, nmg, 1, MAGIC); | |
cb359b41 | 10318 | if (mgprev) |
1d7c1841 | 10319 | mgprev->mg_moremagic = nmg; |
cb359b41 JH |
10320 | else |
10321 | mgret = nmg; | |
1d7c1841 GS |
10322 | nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */ |
10323 | nmg->mg_private = mg->mg_private; | |
10324 | nmg->mg_type = mg->mg_type; | |
10325 | nmg->mg_flags = mg->mg_flags; | |
14befaf4 | 10326 | if (mg->mg_type == PERL_MAGIC_qr) { |
d2f185dc | 10327 | nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj, param); |
1d7c1841 | 10328 | } |
05bd4103 | 10329 | else if(mg->mg_type == PERL_MAGIC_backref) { |
fdc9a813 AE |
10330 | AV *av = (AV*) mg->mg_obj; |
10331 | SV **svp; | |
10332 | I32 i; | |
10333 | SvREFCNT_inc(nmg->mg_obj = (SV*)newAV()); | |
10334 | svp = AvARRAY(av); | |
10335 | for (i = AvFILLp(av); i >= 0; i--) { | |
3a81978b | 10336 | if (!svp[i]) continue; |
fdc9a813 AE |
10337 | av_push((AV*)nmg->mg_obj,sv_dup(svp[i],param)); |
10338 | } | |
05bd4103 | 10339 | } |
1d7c1841 GS |
10340 | else { |
10341 | nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED) | |
d2d73c3e AB |
10342 | ? sv_dup_inc(mg->mg_obj, param) |
10343 | : sv_dup(mg->mg_obj, param); | |
1d7c1841 GS |
10344 | } |
10345 | nmg->mg_len = mg->mg_len; | |
10346 | nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */ | |
14befaf4 | 10347 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
68795e93 | 10348 | if (mg->mg_len > 0) { |
1d7c1841 | 10349 | nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len); |
14befaf4 DM |
10350 | if (mg->mg_type == PERL_MAGIC_overload_table && |
10351 | AMT_AMAGIC((AMT*)mg->mg_ptr)) | |
10352 | { | |
1d7c1841 GS |
10353 | AMT *amtp = (AMT*)mg->mg_ptr; |
10354 | AMT *namtp = (AMT*)nmg->mg_ptr; | |
10355 | I32 i; | |
10356 | for (i = 1; i < NofAMmeth; i++) { | |
d2d73c3e | 10357 | namtp->table[i] = cv_dup_inc(amtp->table[i], param); |
1d7c1841 GS |
10358 | } |
10359 | } | |
10360 | } | |
10361 | else if (mg->mg_len == HEf_SVKEY) | |
d2d73c3e | 10362 | nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr, param); |
1d7c1841 | 10363 | } |
68795e93 NIS |
10364 | if ((mg->mg_flags & MGf_DUP) && mg->mg_virtual && mg->mg_virtual->svt_dup) { |
10365 | CALL_FPTR(nmg->mg_virtual->svt_dup)(aTHX_ nmg, param); | |
10366 | } | |
1d7c1841 GS |
10367 | mgprev = nmg; |
10368 | } | |
10369 | return mgret; | |
10370 | } | |
10371 | ||
645c22ef DM |
10372 | /* create a new pointer-mapping table */ |
10373 | ||
1d7c1841 GS |
10374 | PTR_TBL_t * |
10375 | Perl_ptr_table_new(pTHX) | |
10376 | { | |
10377 | PTR_TBL_t *tbl; | |
10378 | Newz(0, tbl, 1, PTR_TBL_t); | |
10379 | tbl->tbl_max = 511; | |
10380 | tbl->tbl_items = 0; | |
10381 | Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*); | |
10382 | return tbl; | |
10383 | } | |
10384 | ||
134ca3d6 DM |
10385 | #if (PTRSIZE == 8) |
10386 | # define PTR_TABLE_HASH(ptr) (PTR2UV(ptr) >> 3) | |
10387 | #else | |
10388 | # define PTR_TABLE_HASH(ptr) (PTR2UV(ptr) >> 2) | |
10389 | #endif | |
10390 | ||
645c22ef DM |
10391 | /* map an existing pointer using a table */ |
10392 | ||
1d7c1841 GS |
10393 | void * |
10394 | Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv) | |
10395 | { | |
10396 | PTR_TBL_ENT_t *tblent; | |
134ca3d6 | 10397 | UV hash = PTR_TABLE_HASH(sv); |
1d7c1841 GS |
10398 | assert(tbl); |
10399 | tblent = tbl->tbl_ary[hash & tbl->tbl_max]; | |
10400 | for (; tblent; tblent = tblent->next) { | |
10401 | if (tblent->oldval == sv) | |
10402 | return tblent->newval; | |
10403 | } | |
10404 | return (void*)NULL; | |
10405 | } | |
10406 | ||
645c22ef DM |
10407 | /* add a new entry to a pointer-mapping table */ |
10408 | ||
1d7c1841 GS |
10409 | void |
10410 | Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv) | |
10411 | { | |
10412 | PTR_TBL_ENT_t *tblent, **otblent; | |
10413 | /* XXX this may be pessimal on platforms where pointers aren't good | |
10414 | * hash values e.g. if they grow faster in the most significant | |
10415 | * bits */ | |
134ca3d6 | 10416 | UV hash = PTR_TABLE_HASH(oldv); |
14cade97 | 10417 | bool empty = 1; |
1d7c1841 GS |
10418 | |
10419 | assert(tbl); | |
10420 | otblent = &tbl->tbl_ary[hash & tbl->tbl_max]; | |
14cade97 | 10421 | for (tblent = *otblent; tblent; empty=0, tblent = tblent->next) { |
1d7c1841 GS |
10422 | if (tblent->oldval == oldv) { |
10423 | tblent->newval = newv; | |
1d7c1841 GS |
10424 | return; |
10425 | } | |
10426 | } | |
10427 | Newz(0, tblent, 1, PTR_TBL_ENT_t); | |
10428 | tblent->oldval = oldv; | |
10429 | tblent->newval = newv; | |
10430 | tblent->next = *otblent; | |
10431 | *otblent = tblent; | |
10432 | tbl->tbl_items++; | |
14cade97 | 10433 | if (!empty && tbl->tbl_items > tbl->tbl_max) |
1d7c1841 GS |
10434 | ptr_table_split(tbl); |
10435 | } | |
10436 | ||
645c22ef DM |
10437 | /* double the hash bucket size of an existing ptr table */ |
10438 | ||
1d7c1841 GS |
10439 | void |
10440 | Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl) | |
10441 | { | |
10442 | PTR_TBL_ENT_t **ary = tbl->tbl_ary; | |
10443 | UV oldsize = tbl->tbl_max + 1; | |
10444 | UV newsize = oldsize * 2; | |
10445 | UV i; | |
10446 | ||
10447 | Renew(ary, newsize, PTR_TBL_ENT_t*); | |
10448 | Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*); | |
10449 | tbl->tbl_max = --newsize; | |
10450 | tbl->tbl_ary = ary; | |
10451 | for (i=0; i < oldsize; i++, ary++) { | |
10452 | PTR_TBL_ENT_t **curentp, **entp, *ent; | |
10453 | if (!*ary) | |
10454 | continue; | |
10455 | curentp = ary + oldsize; | |
10456 | for (entp = ary, ent = *ary; ent; ent = *entp) { | |
134ca3d6 | 10457 | if ((newsize & PTR_TABLE_HASH(ent->oldval)) != i) { |
1d7c1841 GS |
10458 | *entp = ent->next; |
10459 | ent->next = *curentp; | |
10460 | *curentp = ent; | |
10461 | continue; | |
10462 | } | |
10463 | else | |
10464 | entp = &ent->next; | |
10465 | } | |
10466 | } | |
10467 | } | |
10468 | ||
645c22ef DM |
10469 | /* remove all the entries from a ptr table */ |
10470 | ||
a0739874 DM |
10471 | void |
10472 | Perl_ptr_table_clear(pTHX_ PTR_TBL_t *tbl) | |
10473 | { | |
10474 | register PTR_TBL_ENT_t **array; | |
10475 | register PTR_TBL_ENT_t *entry; | |
10476 | register PTR_TBL_ENT_t *oentry = Null(PTR_TBL_ENT_t*); | |
10477 | UV riter = 0; | |
10478 | UV max; | |
10479 | ||
10480 | if (!tbl || !tbl->tbl_items) { | |
10481 | return; | |
10482 | } | |
10483 | ||
10484 | array = tbl->tbl_ary; | |
10485 | entry = array[0]; | |
10486 | max = tbl->tbl_max; | |
10487 | ||
10488 | for (;;) { | |
10489 | if (entry) { | |
10490 | oentry = entry; | |
10491 | entry = entry->next; | |
10492 | Safefree(oentry); | |
10493 | } | |
10494 | if (!entry) { | |
10495 | if (++riter > max) { | |
10496 | break; | |
10497 | } | |
10498 | entry = array[riter]; | |
10499 | } | |
10500 | } | |
10501 | ||
10502 | tbl->tbl_items = 0; | |
10503 | } | |
10504 | ||
645c22ef DM |
10505 | /* clear and free a ptr table */ |
10506 | ||
a0739874 DM |
10507 | void |
10508 | Perl_ptr_table_free(pTHX_ PTR_TBL_t *tbl) | |
10509 | { | |
10510 | if (!tbl) { | |
10511 | return; | |
10512 | } | |
10513 | ptr_table_clear(tbl); | |
10514 | Safefree(tbl->tbl_ary); | |
10515 | Safefree(tbl); | |
10516 | } | |
10517 | ||
1d7c1841 GS |
10518 | #ifdef DEBUGGING |
10519 | char *PL_watch_pvx; | |
10520 | #endif | |
10521 | ||
645c22ef DM |
10522 | /* attempt to make everything in the typeglob readonly */ |
10523 | ||
5bd07a3d | 10524 | STATIC SV * |
59b40662 | 10525 | S_gv_share(pTHX_ SV *sstr, CLONE_PARAMS *param) |
5bd07a3d DM |
10526 | { |
10527 | GV *gv = (GV*)sstr; | |
59b40662 | 10528 | SV *sv = ¶m->proto_perl->Isv_no; /* just need SvREADONLY-ness */ |
5bd07a3d DM |
10529 | |
10530 | if (GvIO(gv) || GvFORM(gv)) { | |
7fb37951 | 10531 | GvUNIQUE_off(gv); /* GvIOs cannot be shared. nor can GvFORMs */ |
5bd07a3d DM |
10532 | } |
10533 | else if (!GvCV(gv)) { | |
10534 | GvCV(gv) = (CV*)sv; | |
10535 | } | |
10536 | else { | |
10537 | /* CvPADLISTs cannot be shared */ | |
37e20706 | 10538 | if (!SvREADONLY(GvCV(gv)) && !CvXSUB(GvCV(gv))) { |
7fb37951 | 10539 | GvUNIQUE_off(gv); |
5bd07a3d DM |
10540 | } |
10541 | } | |
10542 | ||
7fb37951 | 10543 | if (!GvUNIQUE(gv)) { |
5bd07a3d DM |
10544 | #if 0 |
10545 | PerlIO_printf(Perl_debug_log, "gv_share: unable to share %s::%s\n", | |
10546 | HvNAME(GvSTASH(gv)), GvNAME(gv)); | |
10547 | #endif | |
10548 | return Nullsv; | |
10549 | } | |
10550 | ||
4411f3b6 | 10551 | /* |
5bd07a3d DM |
10552 | * write attempts will die with |
10553 | * "Modification of a read-only value attempted" | |
10554 | */ | |
10555 | if (!GvSV(gv)) { | |
10556 | GvSV(gv) = sv; | |
10557 | } | |
10558 | else { | |
10559 | SvREADONLY_on(GvSV(gv)); | |
10560 | } | |
10561 | ||
10562 | if (!GvAV(gv)) { | |
10563 | GvAV(gv) = (AV*)sv; | |
10564 | } | |
10565 | else { | |
10566 | SvREADONLY_on(GvAV(gv)); | |
10567 | } | |
10568 | ||
10569 | if (!GvHV(gv)) { | |
10570 | GvHV(gv) = (HV*)sv; | |
10571 | } | |
10572 | else { | |
53c33732 | 10573 | SvREADONLY_on(GvHV(gv)); |
5bd07a3d DM |
10574 | } |
10575 | ||
10576 | return sstr; /* he_dup() will SvREFCNT_inc() */ | |
10577 | } | |
10578 | ||
645c22ef DM |
10579 | /* duplicate an SV of any type (including AV, HV etc) */ |
10580 | ||
83841fad NIS |
10581 | void |
10582 | Perl_rvpv_dup(pTHX_ SV *dstr, SV *sstr, CLONE_PARAMS* param) | |
10583 | { | |
10584 | if (SvROK(sstr)) { | |
d3d0e6f1 | 10585 | SvRV(dstr) = SvWEAKREF(sstr) |
83841fad NIS |
10586 | ? sv_dup(SvRV(sstr), param) |
10587 | : sv_dup_inc(SvRV(sstr), param); | |
10588 | } | |
10589 | else if (SvPVX(sstr)) { | |
10590 | /* Has something there */ | |
10591 | if (SvLEN(sstr)) { | |
68795e93 | 10592 | /* Normal PV - clone whole allocated space */ |
83841fad | 10593 | SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1); |
d3d0e6f1 NC |
10594 | if (SvREADONLY(sstr) && SvFAKE(sstr)) { |
10595 | /* Not that normal - actually sstr is copy on write. | |
10596 | But we are a true, independant SV, so: */ | |
10597 | SvREADONLY_off(dstr); | |
10598 | SvFAKE_off(dstr); | |
10599 | } | |
68795e93 | 10600 | } |
83841fad NIS |
10601 | else { |
10602 | /* Special case - not normally malloced for some reason */ | |
10603 | if (SvREADONLY(sstr) && SvFAKE(sstr)) { | |
10604 | /* A "shared" PV - clone it as unshared string */ | |
281b2760 | 10605 | if(SvPADTMP(sstr)) { |
5e6160dc AB |
10606 | /* However, some of them live in the pad |
10607 | and they should not have these flags | |
10608 | turned off */ | |
281b2760 AB |
10609 | |
10610 | SvPVX(dstr) = sharepvn(SvPVX(sstr), SvCUR(sstr), | |
10611 | SvUVX(sstr)); | |
10612 | SvUVX(dstr) = SvUVX(sstr); | |
10613 | } else { | |
10614 | ||
10615 | SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvCUR(sstr)); | |
10616 | SvFAKE_off(dstr); | |
10617 | SvREADONLY_off(dstr); | |
5e6160dc | 10618 | } |
83841fad NIS |
10619 | } |
10620 | else { | |
10621 | /* Some other special case - random pointer */ | |
10622 | SvPVX(dstr) = SvPVX(sstr); | |
d3d0e6f1 | 10623 | } |
83841fad NIS |
10624 | } |
10625 | } | |
10626 | else { | |
10627 | /* Copy the Null */ | |
10628 | SvPVX(dstr) = SvPVX(sstr); | |
10629 | } | |
10630 | } | |
10631 | ||
1d7c1841 | 10632 | SV * |
a8fc9800 | 10633 | Perl_sv_dup(pTHX_ SV *sstr, CLONE_PARAMS* param) |
1d7c1841 | 10634 | { |
1d7c1841 GS |
10635 | SV *dstr; |
10636 | ||
10637 | if (!sstr || SvTYPE(sstr) == SVTYPEMASK) | |
10638 | return Nullsv; | |
10639 | /* look for it in the table first */ | |
10640 | dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr); | |
10641 | if (dstr) | |
10642 | return dstr; | |
10643 | ||
0405e91e AB |
10644 | if(param->flags & CLONEf_JOIN_IN) { |
10645 | /** We are joining here so we don't want do clone | |
10646 | something that is bad **/ | |
10647 | ||
10648 | if(SvTYPE(sstr) == SVt_PVHV && | |
10649 | HvNAME(sstr)) { | |
10650 | /** don't clone stashes if they already exist **/ | |
10651 | HV* old_stash = gv_stashpv(HvNAME(sstr),0); | |
10652 | return (SV*) old_stash; | |
10653 | } | |
10654 | } | |
10655 | ||
1d7c1841 GS |
10656 | /* create anew and remember what it is */ |
10657 | new_SV(dstr); | |
10658 | ptr_table_store(PL_ptr_table, sstr, dstr); | |
10659 | ||
10660 | /* clone */ | |
10661 | SvFLAGS(dstr) = SvFLAGS(sstr); | |
10662 | SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */ | |
10663 | SvREFCNT(dstr) = 0; /* must be before any other dups! */ | |
10664 | ||
10665 | #ifdef DEBUGGING | |
10666 | if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx) | |
10667 | PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n", | |
10668 | PL_watch_pvx, SvPVX(sstr)); | |
10669 | #endif | |
10670 | ||
10671 | switch (SvTYPE(sstr)) { | |
10672 | case SVt_NULL: | |
10673 | SvANY(dstr) = NULL; | |
10674 | break; | |
10675 | case SVt_IV: | |
10676 | SvANY(dstr) = new_XIV(); | |
10677 | SvIVX(dstr) = SvIVX(sstr); | |
10678 | break; | |
10679 | case SVt_NV: | |
10680 | SvANY(dstr) = new_XNV(); | |
10681 | SvNVX(dstr) = SvNVX(sstr); | |
10682 | break; | |
10683 | case SVt_RV: | |
10684 | SvANY(dstr) = new_XRV(); | |
83841fad | 10685 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10686 | break; |
10687 | case SVt_PV: | |
10688 | SvANY(dstr) = new_XPV(); | |
10689 | SvCUR(dstr) = SvCUR(sstr); | |
10690 | SvLEN(dstr) = SvLEN(sstr); | |
83841fad | 10691 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10692 | break; |
10693 | case SVt_PVIV: | |
10694 | SvANY(dstr) = new_XPVIV(); | |
10695 | SvCUR(dstr) = SvCUR(sstr); | |
10696 | SvLEN(dstr) = SvLEN(sstr); | |
10697 | SvIVX(dstr) = SvIVX(sstr); | |
83841fad | 10698 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10699 | break; |
10700 | case SVt_PVNV: | |
10701 | SvANY(dstr) = new_XPVNV(); | |
10702 | SvCUR(dstr) = SvCUR(sstr); | |
10703 | SvLEN(dstr) = SvLEN(sstr); | |
10704 | SvIVX(dstr) = SvIVX(sstr); | |
10705 | SvNVX(dstr) = SvNVX(sstr); | |
83841fad | 10706 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10707 | break; |
10708 | case SVt_PVMG: | |
10709 | SvANY(dstr) = new_XPVMG(); | |
10710 | SvCUR(dstr) = SvCUR(sstr); | |
10711 | SvLEN(dstr) = SvLEN(sstr); | |
10712 | SvIVX(dstr) = SvIVX(sstr); | |
10713 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10714 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10715 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10716 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10717 | break; |
10718 | case SVt_PVBM: | |
10719 | SvANY(dstr) = new_XPVBM(); | |
10720 | SvCUR(dstr) = SvCUR(sstr); | |
10721 | SvLEN(dstr) = SvLEN(sstr); | |
10722 | SvIVX(dstr) = SvIVX(sstr); | |
10723 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10724 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10725 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10726 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10727 | BmRARE(dstr) = BmRARE(sstr); |
10728 | BmUSEFUL(dstr) = BmUSEFUL(sstr); | |
10729 | BmPREVIOUS(dstr)= BmPREVIOUS(sstr); | |
10730 | break; | |
10731 | case SVt_PVLV: | |
10732 | SvANY(dstr) = new_XPVLV(); | |
10733 | SvCUR(dstr) = SvCUR(sstr); | |
10734 | SvLEN(dstr) = SvLEN(sstr); | |
10735 | SvIVX(dstr) = SvIVX(sstr); | |
10736 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10737 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10738 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10739 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10740 | LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */ |
10741 | LvTARGLEN(dstr) = LvTARGLEN(sstr); | |
dd28f7bb DM |
10742 | if (LvTYPE(sstr) == 't') /* for tie: unrefcnted fake (SV**) */ |
10743 | LvTARG(dstr) = dstr; | |
10744 | else if (LvTYPE(sstr) == 'T') /* for tie: fake HE */ | |
10745 | LvTARG(dstr) = (SV*)he_dup((HE*)LvTARG(sstr), 0, param); | |
10746 | else | |
10747 | LvTARG(dstr) = sv_dup_inc(LvTARG(sstr), param); | |
1d7c1841 GS |
10748 | LvTYPE(dstr) = LvTYPE(sstr); |
10749 | break; | |
10750 | case SVt_PVGV: | |
7fb37951 | 10751 | if (GvUNIQUE((GV*)sstr)) { |
5bd07a3d | 10752 | SV *share; |
59b40662 | 10753 | if ((share = gv_share(sstr, param))) { |
5bd07a3d DM |
10754 | del_SV(dstr); |
10755 | dstr = share; | |
37e20706 | 10756 | ptr_table_store(PL_ptr_table, sstr, dstr); |
5bd07a3d DM |
10757 | #if 0 |
10758 | PerlIO_printf(Perl_debug_log, "sv_dup: sharing %s::%s\n", | |
10759 | HvNAME(GvSTASH(share)), GvNAME(share)); | |
10760 | #endif | |
10761 | break; | |
10762 | } | |
10763 | } | |
1d7c1841 GS |
10764 | SvANY(dstr) = new_XPVGV(); |
10765 | SvCUR(dstr) = SvCUR(sstr); | |
10766 | SvLEN(dstr) = SvLEN(sstr); | |
10767 | SvIVX(dstr) = SvIVX(sstr); | |
10768 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10769 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10770 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10771 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10772 | GvNAMELEN(dstr) = GvNAMELEN(sstr); |
10773 | GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr)); | |
d2d73c3e | 10774 | GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr), param); |
1d7c1841 | 10775 | GvFLAGS(dstr) = GvFLAGS(sstr); |
d2d73c3e | 10776 | GvGP(dstr) = gp_dup(GvGP(sstr), param); |
1d7c1841 GS |
10777 | (void)GpREFCNT_inc(GvGP(dstr)); |
10778 | break; | |
10779 | case SVt_PVIO: | |
10780 | SvANY(dstr) = new_XPVIO(); | |
10781 | SvCUR(dstr) = SvCUR(sstr); | |
10782 | SvLEN(dstr) = SvLEN(sstr); | |
10783 | SvIVX(dstr) = SvIVX(sstr); | |
10784 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10785 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10786 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10787 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
a8fc9800 | 10788 | IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr), param); |
1d7c1841 GS |
10789 | if (IoOFP(sstr) == IoIFP(sstr)) |
10790 | IoOFP(dstr) = IoIFP(dstr); | |
10791 | else | |
a8fc9800 | 10792 | IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr), param); |
1d7c1841 GS |
10793 | /* PL_rsfp_filters entries have fake IoDIRP() */ |
10794 | if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP)) | |
10795 | IoDIRP(dstr) = dirp_dup(IoDIRP(sstr)); | |
10796 | else | |
10797 | IoDIRP(dstr) = IoDIRP(sstr); | |
10798 | IoLINES(dstr) = IoLINES(sstr); | |
10799 | IoPAGE(dstr) = IoPAGE(sstr); | |
10800 | IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr); | |
10801 | IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr); | |
5a37521b AB |
10802 | if(IoFLAGS(sstr) & IOf_FAKE_DIRP) { |
10803 | /* I have no idea why fake dirp (rsfps) | |
10804 | should be treaded differently but otherwise | |
10805 | we end up with leaks -- sky*/ | |
10806 | IoTOP_GV(dstr) = gv_dup_inc(IoTOP_GV(sstr), param); | |
10807 | IoFMT_GV(dstr) = gv_dup_inc(IoFMT_GV(sstr), param); | |
10808 | IoBOTTOM_GV(dstr) = gv_dup_inc(IoBOTTOM_GV(sstr), param); | |
10809 | } else { | |
10810 | IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr), param); | |
10811 | IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr), param); | |
10812 | IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr), param); | |
10813 | } | |
1d7c1841 | 10814 | IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr)); |
1d7c1841 | 10815 | IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr)); |
1d7c1841 | 10816 | IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr)); |
1d7c1841 GS |
10817 | IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr); |
10818 | IoTYPE(dstr) = IoTYPE(sstr); | |
10819 | IoFLAGS(dstr) = IoFLAGS(sstr); | |
10820 | break; | |
10821 | case SVt_PVAV: | |
10822 | SvANY(dstr) = new_XPVAV(); | |
10823 | SvCUR(dstr) = SvCUR(sstr); | |
10824 | SvLEN(dstr) = SvLEN(sstr); | |
10825 | SvIVX(dstr) = SvIVX(sstr); | |
10826 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10827 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10828 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
10829 | AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr), param); | |
1d7c1841 GS |
10830 | AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr); |
10831 | if (AvARRAY((AV*)sstr)) { | |
10832 | SV **dst_ary, **src_ary; | |
10833 | SSize_t items = AvFILLp((AV*)sstr) + 1; | |
10834 | ||
10835 | src_ary = AvARRAY((AV*)sstr); | |
10836 | Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*); | |
10837 | ptr_table_store(PL_ptr_table, src_ary, dst_ary); | |
10838 | SvPVX(dstr) = (char*)dst_ary; | |
10839 | AvALLOC((AV*)dstr) = dst_ary; | |
10840 | if (AvREAL((AV*)sstr)) { | |
10841 | while (items-- > 0) | |
d2d73c3e | 10842 | *dst_ary++ = sv_dup_inc(*src_ary++, param); |
1d7c1841 GS |
10843 | } |
10844 | else { | |
10845 | while (items-- > 0) | |
d2d73c3e | 10846 | *dst_ary++ = sv_dup(*src_ary++, param); |
1d7c1841 GS |
10847 | } |
10848 | items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr); | |
10849 | while (items-- > 0) { | |
10850 | *dst_ary++ = &PL_sv_undef; | |
10851 | } | |
10852 | } | |
10853 | else { | |
10854 | SvPVX(dstr) = Nullch; | |
10855 | AvALLOC((AV*)dstr) = (SV**)NULL; | |
10856 | } | |
10857 | break; | |
10858 | case SVt_PVHV: | |
10859 | SvANY(dstr) = new_XPVHV(); | |
10860 | SvCUR(dstr) = SvCUR(sstr); | |
10861 | SvLEN(dstr) = SvLEN(sstr); | |
10862 | SvIVX(dstr) = SvIVX(sstr); | |
10863 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10864 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10865 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
1d7c1841 GS |
10866 | HvRITER((HV*)dstr) = HvRITER((HV*)sstr); |
10867 | if (HvARRAY((HV*)sstr)) { | |
1d7c1841 GS |
10868 | STRLEN i = 0; |
10869 | XPVHV *dxhv = (XPVHV*)SvANY(dstr); | |
10870 | XPVHV *sxhv = (XPVHV*)SvANY(sstr); | |
10871 | Newz(0, dxhv->xhv_array, | |
10872 | PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char); | |
10873 | while (i <= sxhv->xhv_max) { | |
10874 | ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i], | |
eb160463 GS |
10875 | (bool)!!HvSHAREKEYS(sstr), |
10876 | param); | |
1d7c1841 GS |
10877 | ++i; |
10878 | } | |
eb160463 GS |
10879 | dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, |
10880 | (bool)!!HvSHAREKEYS(sstr), param); | |
1d7c1841 GS |
10881 | } |
10882 | else { | |
10883 | SvPVX(dstr) = Nullch; | |
10884 | HvEITER((HV*)dstr) = (HE*)NULL; | |
10885 | } | |
10886 | HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */ | |
10887 | HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr)); | |
c43294b8 | 10888 | /* Record stashes for possible cloning in Perl_clone(). */ |
6676db26 | 10889 | if(HvNAME((HV*)dstr)) |
d2d73c3e | 10890 | av_push(param->stashes, dstr); |
1d7c1841 GS |
10891 | break; |
10892 | case SVt_PVFM: | |
10893 | SvANY(dstr) = new_XPVFM(); | |
10894 | FmLINES(dstr) = FmLINES(sstr); | |
10895 | goto dup_pvcv; | |
10896 | /* NOTREACHED */ | |
10897 | case SVt_PVCV: | |
10898 | SvANY(dstr) = new_XPVCV(); | |
d2d73c3e | 10899 | dup_pvcv: |
1d7c1841 GS |
10900 | SvCUR(dstr) = SvCUR(sstr); |
10901 | SvLEN(dstr) = SvLEN(sstr); | |
10902 | SvIVX(dstr) = SvIVX(sstr); | |
10903 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10904 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10905 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10906 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
d2d73c3e | 10907 | CvSTASH(dstr) = hv_dup(CvSTASH(sstr), param); /* NOTE: not refcounted */ |
1d7c1841 GS |
10908 | CvSTART(dstr) = CvSTART(sstr); |
10909 | CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr)); | |
10910 | CvXSUB(dstr) = CvXSUB(sstr); | |
10911 | CvXSUBANY(dstr) = CvXSUBANY(sstr); | |
01485f8b DM |
10912 | if (CvCONST(sstr)) { |
10913 | CvXSUBANY(dstr).any_ptr = GvUNIQUE(CvGV(sstr)) ? | |
10914 | SvREFCNT_inc(CvXSUBANY(sstr).any_ptr) : | |
10915 | sv_dup_inc(CvXSUBANY(sstr).any_ptr, param); | |
10916 | } | |
b23f1a86 DM |
10917 | /* don't dup if copying back - CvGV isn't refcounted, so the |
10918 | * duped GV may never be freed. A bit of a hack! DAPM */ | |
10919 | CvGV(dstr) = (param->flags & CLONEf_JOIN_IN) ? | |
10920 | Nullgv : gv_dup(CvGV(sstr), param) ; | |
d2d73c3e AB |
10921 | if (param->flags & CLONEf_COPY_STACKS) { |
10922 | CvDEPTH(dstr) = CvDEPTH(sstr); | |
10923 | } else { | |
10924 | CvDEPTH(dstr) = 0; | |
10925 | } | |
dd2155a4 | 10926 | PAD_DUP(CvPADLIST(dstr), CvPADLIST(sstr), param); |
7dafbf52 DM |
10927 | CvOUTSIDE_SEQ(dstr) = CvOUTSIDE_SEQ(sstr); |
10928 | CvOUTSIDE(dstr) = | |
10929 | CvWEAKOUTSIDE(sstr) | |
10930 | ? cv_dup( CvOUTSIDE(sstr), param) | |
10931 | : cv_dup_inc(CvOUTSIDE(sstr), param); | |
1d7c1841 | 10932 | CvFLAGS(dstr) = CvFLAGS(sstr); |
54356c7d | 10933 | CvFILE(dstr) = CvXSUB(sstr) ? CvFILE(sstr) : SAVEPV(CvFILE(sstr)); |
1d7c1841 GS |
10934 | break; |
10935 | default: | |
c803eecc | 10936 | Perl_croak(aTHX_ "Bizarre SvTYPE [%" IVdf "]", (IV)SvTYPE(sstr)); |
1d7c1841 GS |
10937 | break; |
10938 | } | |
10939 | ||
10940 | if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO) | |
10941 | ++PL_sv_objcount; | |
10942 | ||
10943 | return dstr; | |
d2d73c3e | 10944 | } |
1d7c1841 | 10945 | |
645c22ef DM |
10946 | /* duplicate a context */ |
10947 | ||
1d7c1841 | 10948 | PERL_CONTEXT * |
a8fc9800 | 10949 | Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max, CLONE_PARAMS* param) |
1d7c1841 GS |
10950 | { |
10951 | PERL_CONTEXT *ncxs; | |
10952 | ||
10953 | if (!cxs) | |
10954 | return (PERL_CONTEXT*)NULL; | |
10955 | ||
10956 | /* look for it in the table first */ | |
10957 | ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs); | |
10958 | if (ncxs) | |
10959 | return ncxs; | |
10960 | ||
10961 | /* create anew and remember what it is */ | |
10962 | Newz(56, ncxs, max + 1, PERL_CONTEXT); | |
10963 | ptr_table_store(PL_ptr_table, cxs, ncxs); | |
10964 | ||
10965 | while (ix >= 0) { | |
10966 | PERL_CONTEXT *cx = &cxs[ix]; | |
10967 | PERL_CONTEXT *ncx = &ncxs[ix]; | |
10968 | ncx->cx_type = cx->cx_type; | |
10969 | if (CxTYPE(cx) == CXt_SUBST) { | |
10970 | Perl_croak(aTHX_ "Cloning substitution context is unimplemented"); | |
10971 | } | |
10972 | else { | |
10973 | ncx->blk_oldsp = cx->blk_oldsp; | |
10974 | ncx->blk_oldcop = cx->blk_oldcop; | |
10975 | ncx->blk_oldretsp = cx->blk_oldretsp; | |
10976 | ncx->blk_oldmarksp = cx->blk_oldmarksp; | |
10977 | ncx->blk_oldscopesp = cx->blk_oldscopesp; | |
10978 | ncx->blk_oldpm = cx->blk_oldpm; | |
10979 | ncx->blk_gimme = cx->blk_gimme; | |
10980 | switch (CxTYPE(cx)) { | |
10981 | case CXt_SUB: | |
10982 | ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0 | |
d2d73c3e AB |
10983 | ? cv_dup_inc(cx->blk_sub.cv, param) |
10984 | : cv_dup(cx->blk_sub.cv,param)); | |
1d7c1841 | 10985 | ncx->blk_sub.argarray = (cx->blk_sub.hasargs |
d2d73c3e | 10986 | ? av_dup_inc(cx->blk_sub.argarray, param) |
1d7c1841 | 10987 | : Nullav); |
d2d73c3e | 10988 | ncx->blk_sub.savearray = av_dup_inc(cx->blk_sub.savearray, param); |
1d7c1841 GS |
10989 | ncx->blk_sub.olddepth = cx->blk_sub.olddepth; |
10990 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; | |
10991 | ncx->blk_sub.lval = cx->blk_sub.lval; | |
10992 | break; | |
10993 | case CXt_EVAL: | |
10994 | ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval; | |
10995 | ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type; | |
b47cad08 | 10996 | ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv, param); |
1d7c1841 | 10997 | ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root; |
d2d73c3e | 10998 | ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text, param); |
1d7c1841 GS |
10999 | break; |
11000 | case CXt_LOOP: | |
11001 | ncx->blk_loop.label = cx->blk_loop.label; | |
11002 | ncx->blk_loop.resetsp = cx->blk_loop.resetsp; | |
11003 | ncx->blk_loop.redo_op = cx->blk_loop.redo_op; | |
11004 | ncx->blk_loop.next_op = cx->blk_loop.next_op; | |
11005 | ncx->blk_loop.last_op = cx->blk_loop.last_op; | |
11006 | ncx->blk_loop.iterdata = (CxPADLOOP(cx) | |
11007 | ? cx->blk_loop.iterdata | |
d2d73c3e | 11008 | : gv_dup((GV*)cx->blk_loop.iterdata, param)); |
f3548bdc DM |
11009 | ncx->blk_loop.oldcomppad |
11010 | = (PAD*)ptr_table_fetch(PL_ptr_table, | |
11011 | cx->blk_loop.oldcomppad); | |
d2d73c3e AB |
11012 | ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave, param); |
11013 | ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval, param); | |
11014 | ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary, param); | |
1d7c1841 GS |
11015 | ncx->blk_loop.iterix = cx->blk_loop.iterix; |
11016 | ncx->blk_loop.itermax = cx->blk_loop.itermax; | |
11017 | break; | |
11018 | case CXt_FORMAT: | |
d2d73c3e AB |
11019 | ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv, param); |
11020 | ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv, param); | |
11021 | ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv, param); | |
1d7c1841 GS |
11022 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; |
11023 | break; | |
11024 | case CXt_BLOCK: | |
11025 | case CXt_NULL: | |
11026 | break; | |
11027 | } | |
11028 | } | |
11029 | --ix; | |
11030 | } | |
11031 | return ncxs; | |
11032 | } | |
11033 | ||
645c22ef DM |
11034 | /* duplicate a stack info structure */ |
11035 | ||
1d7c1841 | 11036 | PERL_SI * |
a8fc9800 | 11037 | Perl_si_dup(pTHX_ PERL_SI *si, CLONE_PARAMS* param) |
1d7c1841 GS |
11038 | { |
11039 | PERL_SI *nsi; | |
11040 | ||
11041 | if (!si) | |
11042 | return (PERL_SI*)NULL; | |
11043 | ||
11044 | /* look for it in the table first */ | |
11045 | nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si); | |
11046 | if (nsi) | |
11047 | return nsi; | |
11048 | ||
11049 | /* create anew and remember what it is */ | |
11050 | Newz(56, nsi, 1, PERL_SI); | |
11051 | ptr_table_store(PL_ptr_table, si, nsi); | |
11052 | ||
d2d73c3e | 11053 | nsi->si_stack = av_dup_inc(si->si_stack, param); |
1d7c1841 GS |
11054 | nsi->si_cxix = si->si_cxix; |
11055 | nsi->si_cxmax = si->si_cxmax; | |
d2d73c3e | 11056 | nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax, param); |
1d7c1841 | 11057 | nsi->si_type = si->si_type; |
d2d73c3e AB |
11058 | nsi->si_prev = si_dup(si->si_prev, param); |
11059 | nsi->si_next = si_dup(si->si_next, param); | |
1d7c1841 GS |
11060 | nsi->si_markoff = si->si_markoff; |
11061 | ||
11062 | return nsi; | |
11063 | } | |
11064 | ||
11065 | #define POPINT(ss,ix) ((ss)[--(ix)].any_i32) | |
11066 | #define TOPINT(ss,ix) ((ss)[ix].any_i32) | |
11067 | #define POPLONG(ss,ix) ((ss)[--(ix)].any_long) | |
11068 | #define TOPLONG(ss,ix) ((ss)[ix].any_long) | |
11069 | #define POPIV(ss,ix) ((ss)[--(ix)].any_iv) | |
11070 | #define TOPIV(ss,ix) ((ss)[ix].any_iv) | |
38d8b13e HS |
11071 | #define POPBOOL(ss,ix) ((ss)[--(ix)].any_bool) |
11072 | #define TOPBOOL(ss,ix) ((ss)[ix].any_bool) | |
1d7c1841 GS |
11073 | #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr) |
11074 | #define TOPPTR(ss,ix) ((ss)[ix].any_ptr) | |
11075 | #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr) | |
11076 | #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr) | |
11077 | #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr) | |
11078 | #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr) | |
11079 | ||
11080 | /* XXXXX todo */ | |
11081 | #define pv_dup_inc(p) SAVEPV(p) | |
11082 | #define pv_dup(p) SAVEPV(p) | |
11083 | #define svp_dup_inc(p,pp) any_dup(p,pp) | |
11084 | ||
645c22ef DM |
11085 | /* map any object to the new equivent - either something in the |
11086 | * ptr table, or something in the interpreter structure | |
11087 | */ | |
11088 | ||
1d7c1841 GS |
11089 | void * |
11090 | Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl) | |
11091 | { | |
11092 | void *ret; | |
11093 | ||
11094 | if (!v) | |
11095 | return (void*)NULL; | |
11096 | ||
11097 | /* look for it in the table first */ | |
11098 | ret = ptr_table_fetch(PL_ptr_table, v); | |
11099 | if (ret) | |
11100 | return ret; | |
11101 | ||
11102 | /* see if it is part of the interpreter structure */ | |
11103 | if (v >= (void*)proto_perl && v < (void*)(proto_perl+1)) | |
acfe0abc | 11104 | ret = (void*)(((char*)aTHX) + (((char*)v) - (char*)proto_perl)); |
05ec9bb3 | 11105 | else { |
1d7c1841 | 11106 | ret = v; |
05ec9bb3 | 11107 | } |
1d7c1841 GS |
11108 | |
11109 | return ret; | |
11110 | } | |
11111 | ||
645c22ef DM |
11112 | /* duplicate the save stack */ |
11113 | ||
1d7c1841 | 11114 | ANY * |
a8fc9800 | 11115 | Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl, CLONE_PARAMS* param) |
1d7c1841 GS |
11116 | { |
11117 | ANY *ss = proto_perl->Tsavestack; | |
11118 | I32 ix = proto_perl->Tsavestack_ix; | |
11119 | I32 max = proto_perl->Tsavestack_max; | |
11120 | ANY *nss; | |
11121 | SV *sv; | |
11122 | GV *gv; | |
11123 | AV *av; | |
11124 | HV *hv; | |
11125 | void* ptr; | |
11126 | int intval; | |
11127 | long longval; | |
11128 | GP *gp; | |
11129 | IV iv; | |
11130 | I32 i; | |
c4e33207 | 11131 | char *c = NULL; |
1d7c1841 | 11132 | void (*dptr) (void*); |
acfe0abc | 11133 | void (*dxptr) (pTHX_ void*); |
e977893f | 11134 | OP *o; |
1d7c1841 GS |
11135 | |
11136 | Newz(54, nss, max, ANY); | |
11137 | ||
11138 | while (ix > 0) { | |
11139 | i = POPINT(ss,ix); | |
11140 | TOPINT(nss,ix) = i; | |
11141 | switch (i) { | |
11142 | case SAVEt_ITEM: /* normal string */ | |
11143 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11144 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11145 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 11146 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11147 | break; |
11148 | case SAVEt_SV: /* scalar reference */ | |
11149 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11150 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11151 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 11152 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 | 11153 | break; |
f4dd75d9 GS |
11154 | case SAVEt_GENERIC_PVREF: /* generic char* */ |
11155 | c = (char*)POPPTR(ss,ix); | |
11156 | TOPPTR(nss,ix) = pv_dup(c); | |
11157 | ptr = POPPTR(ss,ix); | |
11158 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11159 | break; | |
05ec9bb3 NIS |
11160 | case SAVEt_SHARED_PVREF: /* char* in shared space */ |
11161 | c = (char*)POPPTR(ss,ix); | |
11162 | TOPPTR(nss,ix) = savesharedpv(c); | |
11163 | ptr = POPPTR(ss,ix); | |
11164 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11165 | break; | |
1d7c1841 GS |
11166 | case SAVEt_GENERIC_SVREF: /* generic sv */ |
11167 | case SAVEt_SVREF: /* scalar reference */ | |
11168 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11169 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11170 | ptr = POPPTR(ss,ix); |
11171 | TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */ | |
11172 | break; | |
11173 | case SAVEt_AV: /* array reference */ | |
11174 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 11175 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 | 11176 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 11177 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
11178 | break; |
11179 | case SAVEt_HV: /* hash reference */ | |
11180 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 11181 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 | 11182 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 11183 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
11184 | break; |
11185 | case SAVEt_INT: /* int reference */ | |
11186 | ptr = POPPTR(ss,ix); | |
11187 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11188 | intval = (int)POPINT(ss,ix); | |
11189 | TOPINT(nss,ix) = intval; | |
11190 | break; | |
11191 | case SAVEt_LONG: /* long reference */ | |
11192 | ptr = POPPTR(ss,ix); | |
11193 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11194 | longval = (long)POPLONG(ss,ix); | |
11195 | TOPLONG(nss,ix) = longval; | |
11196 | break; | |
11197 | case SAVEt_I32: /* I32 reference */ | |
11198 | case SAVEt_I16: /* I16 reference */ | |
11199 | case SAVEt_I8: /* I8 reference */ | |
11200 | ptr = POPPTR(ss,ix); | |
11201 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11202 | i = POPINT(ss,ix); | |
11203 | TOPINT(nss,ix) = i; | |
11204 | break; | |
11205 | case SAVEt_IV: /* IV reference */ | |
11206 | ptr = POPPTR(ss,ix); | |
11207 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11208 | iv = POPIV(ss,ix); | |
11209 | TOPIV(nss,ix) = iv; | |
11210 | break; | |
11211 | case SAVEt_SPTR: /* SV* reference */ | |
11212 | ptr = POPPTR(ss,ix); | |
11213 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11214 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11215 | TOPPTR(nss,ix) = sv_dup(sv, param); |
1d7c1841 GS |
11216 | break; |
11217 | case SAVEt_VPTR: /* random* reference */ | |
11218 | ptr = POPPTR(ss,ix); | |
11219 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11220 | ptr = POPPTR(ss,ix); | |
11221 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11222 | break; | |
11223 | case SAVEt_PPTR: /* char* reference */ | |
11224 | ptr = POPPTR(ss,ix); | |
11225 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11226 | c = (char*)POPPTR(ss,ix); | |
11227 | TOPPTR(nss,ix) = pv_dup(c); | |
11228 | break; | |
11229 | case SAVEt_HPTR: /* HV* reference */ | |
11230 | ptr = POPPTR(ss,ix); | |
11231 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11232 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 11233 | TOPPTR(nss,ix) = hv_dup(hv, param); |
1d7c1841 GS |
11234 | break; |
11235 | case SAVEt_APTR: /* AV* reference */ | |
11236 | ptr = POPPTR(ss,ix); | |
11237 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11238 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 11239 | TOPPTR(nss,ix) = av_dup(av, param); |
1d7c1841 GS |
11240 | break; |
11241 | case SAVEt_NSTAB: | |
11242 | gv = (GV*)POPPTR(ss,ix); | |
d2d73c3e | 11243 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
11244 | break; |
11245 | case SAVEt_GP: /* scalar reference */ | |
11246 | gp = (GP*)POPPTR(ss,ix); | |
d2d73c3e | 11247 | TOPPTR(nss,ix) = gp = gp_dup(gp, param); |
1d7c1841 GS |
11248 | (void)GpREFCNT_inc(gp); |
11249 | gv = (GV*)POPPTR(ss,ix); | |
2ed3c8fc | 11250 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 GS |
11251 | c = (char*)POPPTR(ss,ix); |
11252 | TOPPTR(nss,ix) = pv_dup(c); | |
11253 | iv = POPIV(ss,ix); | |
11254 | TOPIV(nss,ix) = iv; | |
11255 | iv = POPIV(ss,ix); | |
11256 | TOPIV(nss,ix) = iv; | |
11257 | break; | |
11258 | case SAVEt_FREESV: | |
26d9b02f | 11259 | case SAVEt_MORTALIZESV: |
1d7c1841 | 11260 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 11261 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11262 | break; |
11263 | case SAVEt_FREEOP: | |
11264 | ptr = POPPTR(ss,ix); | |
11265 | if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) { | |
11266 | /* these are assumed to be refcounted properly */ | |
11267 | switch (((OP*)ptr)->op_type) { | |
11268 | case OP_LEAVESUB: | |
11269 | case OP_LEAVESUBLV: | |
11270 | case OP_LEAVEEVAL: | |
11271 | case OP_LEAVE: | |
11272 | case OP_SCOPE: | |
11273 | case OP_LEAVEWRITE: | |
e977893f GS |
11274 | TOPPTR(nss,ix) = ptr; |
11275 | o = (OP*)ptr; | |
11276 | OpREFCNT_inc(o); | |
1d7c1841 GS |
11277 | break; |
11278 | default: | |
11279 | TOPPTR(nss,ix) = Nullop; | |
11280 | break; | |
11281 | } | |
11282 | } | |
11283 | else | |
11284 | TOPPTR(nss,ix) = Nullop; | |
11285 | break; | |
11286 | case SAVEt_FREEPV: | |
11287 | c = (char*)POPPTR(ss,ix); | |
11288 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
11289 | break; | |
11290 | case SAVEt_CLEARSV: | |
11291 | longval = POPLONG(ss,ix); | |
11292 | TOPLONG(nss,ix) = longval; | |
11293 | break; | |
11294 | case SAVEt_DELETE: | |
11295 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 11296 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
11297 | c = (char*)POPPTR(ss,ix); |
11298 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
11299 | i = POPINT(ss,ix); | |
11300 | TOPINT(nss,ix) = i; | |
11301 | break; | |
11302 | case SAVEt_DESTRUCTOR: | |
11303 | ptr = POPPTR(ss,ix); | |
11304 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
11305 | dptr = POPDPTR(ss,ix); | |
ef75a179 | 11306 | TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl); |
1d7c1841 GS |
11307 | break; |
11308 | case SAVEt_DESTRUCTOR_X: | |
11309 | ptr = POPPTR(ss,ix); | |
11310 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
11311 | dxptr = POPDXPTR(ss,ix); | |
acfe0abc | 11312 | TOPDXPTR(nss,ix) = (void (*)(pTHX_ void*))any_dup((void *)dxptr, proto_perl); |
1d7c1841 GS |
11313 | break; |
11314 | case SAVEt_REGCONTEXT: | |
11315 | case SAVEt_ALLOC: | |
11316 | i = POPINT(ss,ix); | |
11317 | TOPINT(nss,ix) = i; | |
11318 | ix -= i; | |
11319 | break; | |
11320 | case SAVEt_STACK_POS: /* Position on Perl stack */ | |
11321 | i = POPINT(ss,ix); | |
11322 | TOPINT(nss,ix) = i; | |
11323 | break; | |
11324 | case SAVEt_AELEM: /* array element */ | |
11325 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11326 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11327 | i = POPINT(ss,ix); |
11328 | TOPINT(nss,ix) = i; | |
11329 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 11330 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 GS |
11331 | break; |
11332 | case SAVEt_HELEM: /* hash element */ | |
11333 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11334 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11335 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 11336 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11337 | hv = (HV*)POPPTR(ss,ix); |
d2d73c3e | 11338 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
11339 | break; |
11340 | case SAVEt_OP: | |
11341 | ptr = POPPTR(ss,ix); | |
11342 | TOPPTR(nss,ix) = ptr; | |
11343 | break; | |
11344 | case SAVEt_HINTS: | |
11345 | i = POPINT(ss,ix); | |
11346 | TOPINT(nss,ix) = i; | |
11347 | break; | |
c4410b1b GS |
11348 | case SAVEt_COMPPAD: |
11349 | av = (AV*)POPPTR(ss,ix); | |
58ed4fbe | 11350 | TOPPTR(nss,ix) = av_dup(av, param); |
c4410b1b | 11351 | break; |
c3564e5c GS |
11352 | case SAVEt_PADSV: |
11353 | longval = (long)POPLONG(ss,ix); | |
11354 | TOPLONG(nss,ix) = longval; | |
11355 | ptr = POPPTR(ss,ix); | |
11356 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11357 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11358 | TOPPTR(nss,ix) = sv_dup(sv, param); |
c3564e5c | 11359 | break; |
a1bb4754 | 11360 | case SAVEt_BOOL: |
38d8b13e | 11361 | ptr = POPPTR(ss,ix); |
b9609c01 | 11362 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); |
38d8b13e | 11363 | longval = (long)POPBOOL(ss,ix); |
b9609c01 | 11364 | TOPBOOL(nss,ix) = (bool)longval; |
a1bb4754 | 11365 | break; |
8bd2680e MHM |
11366 | case SAVEt_SET_SVFLAGS: |
11367 | i = POPINT(ss,ix); | |
11368 | TOPINT(nss,ix) = i; | |
11369 | i = POPINT(ss,ix); | |
11370 | TOPINT(nss,ix) = i; | |
11371 | sv = (SV*)POPPTR(ss,ix); | |
11372 | TOPPTR(nss,ix) = sv_dup(sv, param); | |
11373 | break; | |
1d7c1841 GS |
11374 | default: |
11375 | Perl_croak(aTHX_ "panic: ss_dup inconsistency"); | |
11376 | } | |
11377 | } | |
11378 | ||
11379 | return nss; | |
11380 | } | |
11381 | ||
645c22ef DM |
11382 | /* |
11383 | =for apidoc perl_clone | |
11384 | ||
11385 | Create and return a new interpreter by cloning the current one. | |
11386 | ||
4be49ee6 | 11387 | perl_clone takes these flags as parameters: |
6a78b4db AB |
11388 | |
11389 | CLONEf_COPY_STACKS - is used to, well, copy the stacks also, | |
11390 | without it we only clone the data and zero the stacks, | |
11391 | with it we copy the stacks and the new perl interpreter is | |
11392 | ready to run at the exact same point as the previous one. | |
11393 | The pseudo-fork code uses COPY_STACKS while the | |
11394 | threads->new doesn't. | |
11395 | ||
11396 | CLONEf_KEEP_PTR_TABLE | |
11397 | perl_clone keeps a ptr_table with the pointer of the old | |
11398 | variable as a key and the new variable as a value, | |
11399 | this allows it to check if something has been cloned and not | |
11400 | clone it again but rather just use the value and increase the | |
11401 | refcount. If KEEP_PTR_TABLE is not set then perl_clone will kill | |
11402 | the ptr_table using the function | |
11403 | C<ptr_table_free(PL_ptr_table); PL_ptr_table = NULL;>, | |
11404 | reason to keep it around is if you want to dup some of your own | |
11405 | variable who are outside the graph perl scans, example of this | |
11406 | code is in threads.xs create | |
11407 | ||
11408 | CLONEf_CLONE_HOST | |
11409 | This is a win32 thing, it is ignored on unix, it tells perls | |
11410 | win32host code (which is c++) to clone itself, this is needed on | |
11411 | win32 if you want to run two threads at the same time, | |
11412 | if you just want to do some stuff in a separate perl interpreter | |
11413 | and then throw it away and return to the original one, | |
11414 | you don't need to do anything. | |
11415 | ||
645c22ef DM |
11416 | =cut |
11417 | */ | |
11418 | ||
11419 | /* XXX the above needs expanding by someone who actually understands it ! */ | |
3fc56081 NK |
11420 | EXTERN_C PerlInterpreter * |
11421 | perl_clone_host(PerlInterpreter* proto_perl, UV flags); | |
645c22ef | 11422 | |
1d7c1841 GS |
11423 | PerlInterpreter * |
11424 | perl_clone(PerlInterpreter *proto_perl, UV flags) | |
11425 | { | |
1d7c1841 | 11426 | #ifdef PERL_IMPLICIT_SYS |
c43294b8 AB |
11427 | |
11428 | /* perlhost.h so we need to call into it | |
11429 | to clone the host, CPerlHost should have a c interface, sky */ | |
11430 | ||
11431 | if (flags & CLONEf_CLONE_HOST) { | |
11432 | return perl_clone_host(proto_perl,flags); | |
11433 | } | |
11434 | return perl_clone_using(proto_perl, flags, | |
1d7c1841 GS |
11435 | proto_perl->IMem, |
11436 | proto_perl->IMemShared, | |
11437 | proto_perl->IMemParse, | |
11438 | proto_perl->IEnv, | |
11439 | proto_perl->IStdIO, | |
11440 | proto_perl->ILIO, | |
11441 | proto_perl->IDir, | |
11442 | proto_perl->ISock, | |
11443 | proto_perl->IProc); | |
11444 | } | |
11445 | ||
11446 | PerlInterpreter * | |
11447 | perl_clone_using(PerlInterpreter *proto_perl, UV flags, | |
11448 | struct IPerlMem* ipM, struct IPerlMem* ipMS, | |
11449 | struct IPerlMem* ipMP, struct IPerlEnv* ipE, | |
11450 | struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO, | |
11451 | struct IPerlDir* ipD, struct IPerlSock* ipS, | |
11452 | struct IPerlProc* ipP) | |
11453 | { | |
11454 | /* XXX many of the string copies here can be optimized if they're | |
11455 | * constants; they need to be allocated as common memory and just | |
11456 | * their pointers copied. */ | |
11457 | ||
11458 | IV i; | |
64aa0685 GS |
11459 | CLONE_PARAMS clone_params; |
11460 | CLONE_PARAMS* param = &clone_params; | |
d2d73c3e | 11461 | |
1d7c1841 | 11462 | PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter)); |
ba869deb | 11463 | PERL_SET_THX(my_perl); |
1d7c1841 | 11464 | |
acfe0abc | 11465 | # ifdef DEBUGGING |
a4530404 | 11466 | Poison(my_perl, 1, PerlInterpreter); |
1d7c1841 GS |
11467 | PL_markstack = 0; |
11468 | PL_scopestack = 0; | |
11469 | PL_savestack = 0; | |
22f7c9c9 JH |
11470 | PL_savestack_ix = 0; |
11471 | PL_savestack_max = -1; | |
1d7c1841 | 11472 | PL_retstack = 0; |
66fe0623 | 11473 | PL_sig_pending = 0; |
25596c82 | 11474 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); |
acfe0abc | 11475 | # else /* !DEBUGGING */ |
1d7c1841 | 11476 | Zero(my_perl, 1, PerlInterpreter); |
acfe0abc | 11477 | # endif /* DEBUGGING */ |
1d7c1841 GS |
11478 | |
11479 | /* host pointers */ | |
11480 | PL_Mem = ipM; | |
11481 | PL_MemShared = ipMS; | |
11482 | PL_MemParse = ipMP; | |
11483 | PL_Env = ipE; | |
11484 | PL_StdIO = ipStd; | |
11485 | PL_LIO = ipLIO; | |
11486 | PL_Dir = ipD; | |
11487 | PL_Sock = ipS; | |
11488 | PL_Proc = ipP; | |
1d7c1841 GS |
11489 | #else /* !PERL_IMPLICIT_SYS */ |
11490 | IV i; | |
64aa0685 GS |
11491 | CLONE_PARAMS clone_params; |
11492 | CLONE_PARAMS* param = &clone_params; | |
1d7c1841 | 11493 | PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter)); |
ba869deb | 11494 | PERL_SET_THX(my_perl); |
1d7c1841 | 11495 | |
d2d73c3e AB |
11496 | |
11497 | ||
1d7c1841 | 11498 | # ifdef DEBUGGING |
a4530404 | 11499 | Poison(my_perl, 1, PerlInterpreter); |
1d7c1841 GS |
11500 | PL_markstack = 0; |
11501 | PL_scopestack = 0; | |
11502 | PL_savestack = 0; | |
22f7c9c9 JH |
11503 | PL_savestack_ix = 0; |
11504 | PL_savestack_max = -1; | |
1d7c1841 | 11505 | PL_retstack = 0; |
66fe0623 | 11506 | PL_sig_pending = 0; |
25596c82 | 11507 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); |
1d7c1841 GS |
11508 | # else /* !DEBUGGING */ |
11509 | Zero(my_perl, 1, PerlInterpreter); | |
11510 | # endif /* DEBUGGING */ | |
11511 | #endif /* PERL_IMPLICIT_SYS */ | |
83236556 | 11512 | param->flags = flags; |
59b40662 | 11513 | param->proto_perl = proto_perl; |
1d7c1841 GS |
11514 | |
11515 | /* arena roots */ | |
11516 | PL_xiv_arenaroot = NULL; | |
11517 | PL_xiv_root = NULL; | |
612f20c3 | 11518 | PL_xnv_arenaroot = NULL; |
1d7c1841 | 11519 | PL_xnv_root = NULL; |
612f20c3 | 11520 | PL_xrv_arenaroot = NULL; |
1d7c1841 | 11521 | PL_xrv_root = NULL; |
612f20c3 | 11522 | PL_xpv_arenaroot = NULL; |
1d7c1841 | 11523 | PL_xpv_root = NULL; |
612f20c3 | 11524 | PL_xpviv_arenaroot = NULL; |
1d7c1841 | 11525 | PL_xpviv_root = NULL; |
612f20c3 | 11526 | PL_xpvnv_arenaroot = NULL; |
1d7c1841 | 11527 | PL_xpvnv_root = NULL; |
612f20c3 | 11528 | PL_xpvcv_arenaroot = NULL; |
1d7c1841 | 11529 | PL_xpvcv_root = NULL; |
612f20c3 | 11530 | PL_xpvav_arenaroot = NULL; |
1d7c1841 | 11531 | PL_xpvav_root = NULL; |
612f20c3 | 11532 | PL_xpvhv_arenaroot = NULL; |
1d7c1841 | 11533 | PL_xpvhv_root = NULL; |
612f20c3 | 11534 | PL_xpvmg_arenaroot = NULL; |
1d7c1841 | 11535 | PL_xpvmg_root = NULL; |
612f20c3 | 11536 | PL_xpvlv_arenaroot = NULL; |
1d7c1841 | 11537 | PL_xpvlv_root = NULL; |
612f20c3 | 11538 | PL_xpvbm_arenaroot = NULL; |
1d7c1841 | 11539 | PL_xpvbm_root = NULL; |
612f20c3 | 11540 | PL_he_arenaroot = NULL; |
1d7c1841 GS |
11541 | PL_he_root = NULL; |
11542 | PL_nice_chunk = NULL; | |
11543 | PL_nice_chunk_size = 0; | |
11544 | PL_sv_count = 0; | |
11545 | PL_sv_objcount = 0; | |
11546 | PL_sv_root = Nullsv; | |
11547 | PL_sv_arenaroot = Nullsv; | |
11548 | ||
11549 | PL_debug = proto_perl->Idebug; | |
11550 | ||
e5dd39fc | 11551 | #ifdef USE_REENTRANT_API |
68853529 SB |
11552 | /* XXX: things like -Dm will segfault here in perlio, but doing |
11553 | * PERL_SET_CONTEXT(proto_perl); | |
11554 | * breaks too many other things | |
11555 | */ | |
59bd0823 | 11556 | Perl_reentrant_init(aTHX); |
e5dd39fc AB |
11557 | #endif |
11558 | ||
1d7c1841 GS |
11559 | /* create SV map for pointer relocation */ |
11560 | PL_ptr_table = ptr_table_new(); | |
11561 | ||
11562 | /* initialize these special pointers as early as possible */ | |
11563 | SvANY(&PL_sv_undef) = NULL; | |
11564 | SvREFCNT(&PL_sv_undef) = (~(U32)0)/2; | |
11565 | SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL; | |
11566 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef); | |
11567 | ||
1d7c1841 | 11568 | SvANY(&PL_sv_no) = new_XPVNV(); |
1d7c1841 GS |
11569 | SvREFCNT(&PL_sv_no) = (~(U32)0)/2; |
11570 | SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
11571 | SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0); | |
11572 | SvCUR(&PL_sv_no) = 0; | |
11573 | SvLEN(&PL_sv_no) = 1; | |
11574 | SvNVX(&PL_sv_no) = 0; | |
11575 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no); | |
11576 | ||
1d7c1841 | 11577 | SvANY(&PL_sv_yes) = new_XPVNV(); |
1d7c1841 GS |
11578 | SvREFCNT(&PL_sv_yes) = (~(U32)0)/2; |
11579 | SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
11580 | SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1); | |
11581 | SvCUR(&PL_sv_yes) = 1; | |
11582 | SvLEN(&PL_sv_yes) = 2; | |
11583 | SvNVX(&PL_sv_yes) = 1; | |
11584 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes); | |
11585 | ||
05ec9bb3 | 11586 | /* create (a non-shared!) shared string table */ |
1d7c1841 GS |
11587 | PL_strtab = newHV(); |
11588 | HvSHAREKEYS_off(PL_strtab); | |
11589 | hv_ksplit(PL_strtab, 512); | |
11590 | ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab); | |
11591 | ||
05ec9bb3 NIS |
11592 | PL_compiling = proto_perl->Icompiling; |
11593 | ||
11594 | /* These two PVs will be free'd special way so must set them same way op.c does */ | |
11595 | PL_compiling.cop_stashpv = savesharedpv(PL_compiling.cop_stashpv); | |
11596 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_stashpv, PL_compiling.cop_stashpv); | |
11597 | ||
11598 | PL_compiling.cop_file = savesharedpv(PL_compiling.cop_file); | |
11599 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_file, PL_compiling.cop_file); | |
11600 | ||
1d7c1841 GS |
11601 | ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling); |
11602 | if (!specialWARN(PL_compiling.cop_warnings)) | |
d2d73c3e | 11603 | PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings, param); |
ac27b0f5 | 11604 | if (!specialCopIO(PL_compiling.cop_io)) |
d2d73c3e | 11605 | PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io, param); |
1d7c1841 GS |
11606 | PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl); |
11607 | ||
11608 | /* pseudo environmental stuff */ | |
11609 | PL_origargc = proto_perl->Iorigargc; | |
e2975953 | 11610 | PL_origargv = proto_perl->Iorigargv; |
d2d73c3e | 11611 | |
d2d73c3e AB |
11612 | param->stashes = newAV(); /* Setup array of objects to call clone on */ |
11613 | ||
a1ea730d | 11614 | #ifdef PERLIO_LAYERS |
3a1ee7e8 NIS |
11615 | /* Clone PerlIO tables as soon as we can handle general xx_dup() */ |
11616 | PerlIO_clone(aTHX_ proto_perl, param); | |
a1ea730d | 11617 | #endif |
d2d73c3e AB |
11618 | |
11619 | PL_envgv = gv_dup(proto_perl->Ienvgv, param); | |
11620 | PL_incgv = gv_dup(proto_perl->Iincgv, param); | |
11621 | PL_hintgv = gv_dup(proto_perl->Ihintgv, param); | |
1d7c1841 | 11622 | PL_origfilename = SAVEPV(proto_perl->Iorigfilename); |
d2d73c3e AB |
11623 | PL_diehook = sv_dup_inc(proto_perl->Idiehook, param); |
11624 | PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook, param); | |
1d7c1841 GS |
11625 | |
11626 | /* switches */ | |
11627 | PL_minus_c = proto_perl->Iminus_c; | |
d2d73c3e | 11628 | PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel, param); |
1d7c1841 GS |
11629 | PL_localpatches = proto_perl->Ilocalpatches; |
11630 | PL_splitstr = proto_perl->Isplitstr; | |
11631 | PL_preprocess = proto_perl->Ipreprocess; | |
11632 | PL_minus_n = proto_perl->Iminus_n; | |
11633 | PL_minus_p = proto_perl->Iminus_p; | |
11634 | PL_minus_l = proto_perl->Iminus_l; | |
11635 | PL_minus_a = proto_perl->Iminus_a; | |
11636 | PL_minus_F = proto_perl->Iminus_F; | |
11637 | PL_doswitches = proto_perl->Idoswitches; | |
11638 | PL_dowarn = proto_perl->Idowarn; | |
11639 | PL_doextract = proto_perl->Idoextract; | |
11640 | PL_sawampersand = proto_perl->Isawampersand; | |
11641 | PL_unsafe = proto_perl->Iunsafe; | |
11642 | PL_inplace = SAVEPV(proto_perl->Iinplace); | |
d2d73c3e | 11643 | PL_e_script = sv_dup_inc(proto_perl->Ie_script, param); |
1d7c1841 GS |
11644 | PL_perldb = proto_perl->Iperldb; |
11645 | PL_perl_destruct_level = proto_perl->Iperl_destruct_level; | |
1cbb0781 | 11646 | PL_exit_flags = proto_perl->Iexit_flags; |
1d7c1841 GS |
11647 | |
11648 | /* magical thingies */ | |
11649 | /* XXX time(&PL_basetime) when asked for? */ | |
11650 | PL_basetime = proto_perl->Ibasetime; | |
d2d73c3e | 11651 | PL_formfeed = sv_dup(proto_perl->Iformfeed, param); |
1d7c1841 GS |
11652 | |
11653 | PL_maxsysfd = proto_perl->Imaxsysfd; | |
11654 | PL_multiline = proto_perl->Imultiline; | |
11655 | PL_statusvalue = proto_perl->Istatusvalue; | |
11656 | #ifdef VMS | |
11657 | PL_statusvalue_vms = proto_perl->Istatusvalue_vms; | |
11658 | #endif | |
0a378802 | 11659 | PL_encoding = sv_dup(proto_perl->Iencoding, param); |
1d7c1841 | 11660 | |
4a4c6fe3 | 11661 | sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */ |
1f483ca1 JH |
11662 | sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */ |
11663 | sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */ | |
4a4c6fe3 | 11664 | |
d2f185dc AMS |
11665 | /* Clone the regex array */ |
11666 | PL_regex_padav = newAV(); | |
11667 | { | |
11668 | I32 len = av_len((AV*)proto_perl->Iregex_padav); | |
11669 | SV** regexen = AvARRAY((AV*)proto_perl->Iregex_padav); | |
0f95fc41 AB |
11670 | av_push(PL_regex_padav, |
11671 | sv_dup_inc(regexen[0],param)); | |
11672 | for(i = 1; i <= len; i++) { | |
11673 | if(SvREPADTMP(regexen[i])) { | |
11674 | av_push(PL_regex_padav, sv_dup_inc(regexen[i], param)); | |
8cf8f3d1 | 11675 | } else { |
0f95fc41 AB |
11676 | av_push(PL_regex_padav, |
11677 | SvREFCNT_inc( | |
8cf8f3d1 | 11678 | newSViv(PTR2IV(re_dup(INT2PTR(REGEXP *, |
cbfa9890 | 11679 | SvIVX(regexen[i])), param))) |
0f95fc41 AB |
11680 | )); |
11681 | } | |
d2f185dc AMS |
11682 | } |
11683 | } | |
11684 | PL_regex_pad = AvARRAY(PL_regex_padav); | |
1fcf4c12 | 11685 | |
1d7c1841 | 11686 | /* shortcuts to various I/O objects */ |
d2d73c3e AB |
11687 | PL_stdingv = gv_dup(proto_perl->Istdingv, param); |
11688 | PL_stderrgv = gv_dup(proto_perl->Istderrgv, param); | |
11689 | PL_defgv = gv_dup(proto_perl->Idefgv, param); | |
11690 | PL_argvgv = gv_dup(proto_perl->Iargvgv, param); | |
11691 | PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv, param); | |
11692 | PL_argvout_stack = av_dup_inc(proto_perl->Iargvout_stack, param); | |
1d7c1841 GS |
11693 | |
11694 | /* shortcuts to regexp stuff */ | |
d2d73c3e | 11695 | PL_replgv = gv_dup(proto_perl->Ireplgv, param); |
1d7c1841 GS |
11696 | |
11697 | /* shortcuts to misc objects */ | |
d2d73c3e | 11698 | PL_errgv = gv_dup(proto_perl->Ierrgv, param); |
1d7c1841 GS |
11699 | |
11700 | /* shortcuts to debugging objects */ | |
d2d73c3e AB |
11701 | PL_DBgv = gv_dup(proto_perl->IDBgv, param); |
11702 | PL_DBline = gv_dup(proto_perl->IDBline, param); | |
11703 | PL_DBsub = gv_dup(proto_perl->IDBsub, param); | |
11704 | PL_DBsingle = sv_dup(proto_perl->IDBsingle, param); | |
11705 | PL_DBtrace = sv_dup(proto_perl->IDBtrace, param); | |
11706 | PL_DBsignal = sv_dup(proto_perl->IDBsignal, param); | |
06492da6 | 11707 | PL_DBassertion = sv_dup(proto_perl->IDBassertion, param); |
d2d73c3e AB |
11708 | PL_lineary = av_dup(proto_perl->Ilineary, param); |
11709 | PL_dbargs = av_dup(proto_perl->Idbargs, param); | |
1d7c1841 GS |
11710 | |
11711 | /* symbol tables */ | |
d2d73c3e AB |
11712 | PL_defstash = hv_dup_inc(proto_perl->Tdefstash, param); |
11713 | PL_curstash = hv_dup(proto_perl->Tcurstash, param); | |
d2d73c3e AB |
11714 | PL_debstash = hv_dup(proto_perl->Idebstash, param); |
11715 | PL_globalstash = hv_dup(proto_perl->Iglobalstash, param); | |
11716 | PL_curstname = sv_dup_inc(proto_perl->Icurstname, param); | |
11717 | ||
11718 | PL_beginav = av_dup_inc(proto_perl->Ibeginav, param); | |
ee1c5a4e | 11719 | PL_beginav_save = av_dup_inc(proto_perl->Ibeginav_save, param); |
ece599bd | 11720 | PL_checkav_save = av_dup_inc(proto_perl->Icheckav_save, param); |
d2d73c3e AB |
11721 | PL_endav = av_dup_inc(proto_perl->Iendav, param); |
11722 | PL_checkav = av_dup_inc(proto_perl->Icheckav, param); | |
11723 | PL_initav = av_dup_inc(proto_perl->Iinitav, param); | |
1d7c1841 GS |
11724 | |
11725 | PL_sub_generation = proto_perl->Isub_generation; | |
11726 | ||
11727 | /* funky return mechanisms */ | |
11728 | PL_forkprocess = proto_perl->Iforkprocess; | |
11729 | ||
11730 | /* subprocess state */ | |
d2d73c3e | 11731 | PL_fdpid = av_dup_inc(proto_perl->Ifdpid, param); |
1d7c1841 GS |
11732 | |
11733 | /* internal state */ | |
11734 | PL_tainting = proto_perl->Itainting; | |
7135f00b | 11735 | PL_taint_warn = proto_perl->Itaint_warn; |
1d7c1841 GS |
11736 | PL_maxo = proto_perl->Imaxo; |
11737 | if (proto_perl->Iop_mask) | |
11738 | PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo); | |
11739 | else | |
11740 | PL_op_mask = Nullch; | |
06492da6 | 11741 | /* PL_asserting = proto_perl->Iasserting; */ |
1d7c1841 GS |
11742 | |
11743 | /* current interpreter roots */ | |
d2d73c3e | 11744 | PL_main_cv = cv_dup_inc(proto_perl->Imain_cv, param); |
1d7c1841 GS |
11745 | PL_main_root = OpREFCNT_inc(proto_perl->Imain_root); |
11746 | PL_main_start = proto_perl->Imain_start; | |
e977893f | 11747 | PL_eval_root = proto_perl->Ieval_root; |
1d7c1841 GS |
11748 | PL_eval_start = proto_perl->Ieval_start; |
11749 | ||
11750 | /* runtime control stuff */ | |
11751 | PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl); | |
11752 | PL_copline = proto_perl->Icopline; | |
11753 | ||
11754 | PL_filemode = proto_perl->Ifilemode; | |
11755 | PL_lastfd = proto_perl->Ilastfd; | |
11756 | PL_oldname = proto_perl->Ioldname; /* XXX not quite right */ | |
11757 | PL_Argv = NULL; | |
11758 | PL_Cmd = Nullch; | |
11759 | PL_gensym = proto_perl->Igensym; | |
11760 | PL_preambled = proto_perl->Ipreambled; | |
d2d73c3e | 11761 | PL_preambleav = av_dup_inc(proto_perl->Ipreambleav, param); |
1d7c1841 GS |
11762 | PL_laststatval = proto_perl->Ilaststatval; |
11763 | PL_laststype = proto_perl->Ilaststype; | |
11764 | PL_mess_sv = Nullsv; | |
11765 | ||
d2d73c3e | 11766 | PL_ors_sv = sv_dup_inc(proto_perl->Iors_sv, param); |
1d7c1841 GS |
11767 | PL_ofmt = SAVEPV(proto_perl->Iofmt); |
11768 | ||
11769 | /* interpreter atexit processing */ | |
11770 | PL_exitlistlen = proto_perl->Iexitlistlen; | |
11771 | if (PL_exitlistlen) { | |
11772 | New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
11773 | Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
11774 | } | |
11775 | else | |
11776 | PL_exitlist = (PerlExitListEntry*)NULL; | |
d2d73c3e | 11777 | PL_modglobal = hv_dup_inc(proto_perl->Imodglobal, param); |
19e8ce8e AB |
11778 | PL_custom_op_names = hv_dup_inc(proto_perl->Icustom_op_names,param); |
11779 | PL_custom_op_descs = hv_dup_inc(proto_perl->Icustom_op_descs,param); | |
1d7c1841 GS |
11780 | |
11781 | PL_profiledata = NULL; | |
a8fc9800 | 11782 | PL_rsfp = fp_dup(proto_perl->Irsfp, '<', param); |
1d7c1841 | 11783 | /* PL_rsfp_filters entries have fake IoDIRP() */ |
d2d73c3e | 11784 | PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters, param); |
1d7c1841 | 11785 | |
d2d73c3e | 11786 | PL_compcv = cv_dup(proto_perl->Icompcv, param); |
dd2155a4 DM |
11787 | |
11788 | PAD_CLONE_VARS(proto_perl, param); | |
1d7c1841 GS |
11789 | |
11790 | #ifdef HAVE_INTERP_INTERN | |
11791 | sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern); | |
11792 | #endif | |
11793 | ||
11794 | /* more statics moved here */ | |
11795 | PL_generation = proto_perl->Igeneration; | |
d2d73c3e | 11796 | PL_DBcv = cv_dup(proto_perl->IDBcv, param); |
1d7c1841 GS |
11797 | |
11798 | PL_in_clean_objs = proto_perl->Iin_clean_objs; | |
11799 | PL_in_clean_all = proto_perl->Iin_clean_all; | |
11800 | ||
11801 | PL_uid = proto_perl->Iuid; | |
11802 | PL_euid = proto_perl->Ieuid; | |
11803 | PL_gid = proto_perl->Igid; | |
11804 | PL_egid = proto_perl->Iegid; | |
11805 | PL_nomemok = proto_perl->Inomemok; | |
11806 | PL_an = proto_perl->Ian; | |
1d7c1841 GS |
11807 | PL_evalseq = proto_perl->Ievalseq; |
11808 | PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */ | |
11809 | PL_origalen = proto_perl->Iorigalen; | |
11810 | PL_pidstatus = newHV(); /* XXX flag for cloning? */ | |
11811 | PL_osname = SAVEPV(proto_perl->Iosname); | |
5c728af0 | 11812 | PL_sh_path_compat = proto_perl->Ish_path_compat; /* XXX never deallocated */ |
1d7c1841 GS |
11813 | PL_sighandlerp = proto_perl->Isighandlerp; |
11814 | ||
11815 | ||
11816 | PL_runops = proto_perl->Irunops; | |
11817 | ||
11818 | Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char); | |
11819 | ||
11820 | #ifdef CSH | |
11821 | PL_cshlen = proto_perl->Icshlen; | |
74f1b2b8 | 11822 | PL_cshname = proto_perl->Icshname; /* XXX never deallocated */ |
1d7c1841 GS |
11823 | #endif |
11824 | ||
11825 | PL_lex_state = proto_perl->Ilex_state; | |
11826 | PL_lex_defer = proto_perl->Ilex_defer; | |
11827 | PL_lex_expect = proto_perl->Ilex_expect; | |
11828 | PL_lex_formbrack = proto_perl->Ilex_formbrack; | |
11829 | PL_lex_dojoin = proto_perl->Ilex_dojoin; | |
11830 | PL_lex_starts = proto_perl->Ilex_starts; | |
d2d73c3e AB |
11831 | PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff, param); |
11832 | PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl, param); | |
1d7c1841 GS |
11833 | PL_lex_op = proto_perl->Ilex_op; |
11834 | PL_lex_inpat = proto_perl->Ilex_inpat; | |
11835 | PL_lex_inwhat = proto_perl->Ilex_inwhat; | |
11836 | PL_lex_brackets = proto_perl->Ilex_brackets; | |
11837 | i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets); | |
11838 | PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i); | |
11839 | PL_lex_casemods = proto_perl->Ilex_casemods; | |
11840 | i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods); | |
11841 | PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i); | |
11842 | ||
11843 | Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE); | |
11844 | Copy(proto_perl->Inexttype, PL_nexttype, 5, I32); | |
11845 | PL_nexttoke = proto_perl->Inexttoke; | |
11846 | ||
1d773130 TB |
11847 | /* XXX This is probably masking the deeper issue of why |
11848 | * SvANY(proto_perl->Ilinestr) can be NULL at this point. For test case: | |
11849 | * http://archive.develooper.com/perl5-porters%40perl.org/msg83298.html | |
11850 | * (A little debugging with a watchpoint on it may help.) | |
11851 | */ | |
389edf32 TB |
11852 | if (SvANY(proto_perl->Ilinestr)) { |
11853 | PL_linestr = sv_dup_inc(proto_perl->Ilinestr, param); | |
11854 | i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr); | |
11855 | PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11856 | i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr); | |
11857 | PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11858 | i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr); | |
11859 | PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11860 | i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr); | |
11861 | PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11862 | } | |
11863 | else { | |
11864 | PL_linestr = NEWSV(65,79); | |
11865 | sv_upgrade(PL_linestr,SVt_PVIV); | |
11866 | sv_setpvn(PL_linestr,"",0); | |
11867 | PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
11868 | } | |
1d7c1841 | 11869 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
1d7c1841 GS |
11870 | PL_pending_ident = proto_perl->Ipending_ident; |
11871 | PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */ | |
11872 | ||
11873 | PL_expect = proto_perl->Iexpect; | |
11874 | ||
11875 | PL_multi_start = proto_perl->Imulti_start; | |
11876 | PL_multi_end = proto_perl->Imulti_end; | |
11877 | PL_multi_open = proto_perl->Imulti_open; | |
11878 | PL_multi_close = proto_perl->Imulti_close; | |
11879 | ||
11880 | PL_error_count = proto_perl->Ierror_count; | |
11881 | PL_subline = proto_perl->Isubline; | |
d2d73c3e | 11882 | PL_subname = sv_dup_inc(proto_perl->Isubname, param); |
1d7c1841 | 11883 | |
1d773130 | 11884 | /* XXX See comment on SvANY(proto_perl->Ilinestr) above */ |
389edf32 TB |
11885 | if (SvANY(proto_perl->Ilinestr)) { |
11886 | i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr); | |
11887 | PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11888 | i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr); | |
11889 | PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11890 | PL_last_lop_op = proto_perl->Ilast_lop_op; | |
11891 | } | |
11892 | else { | |
11893 | PL_last_uni = SvPVX(PL_linestr); | |
11894 | PL_last_lop = SvPVX(PL_linestr); | |
11895 | PL_last_lop_op = 0; | |
11896 | } | |
1d7c1841 | 11897 | PL_in_my = proto_perl->Iin_my; |
d2d73c3e | 11898 | PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash, param); |
1d7c1841 GS |
11899 | #ifdef FCRYPT |
11900 | PL_cryptseen = proto_perl->Icryptseen; | |
11901 | #endif | |
11902 | ||
11903 | PL_hints = proto_perl->Ihints; | |
11904 | ||
11905 | PL_amagic_generation = proto_perl->Iamagic_generation; | |
11906 | ||
11907 | #ifdef USE_LOCALE_COLLATE | |
11908 | PL_collation_ix = proto_perl->Icollation_ix; | |
11909 | PL_collation_name = SAVEPV(proto_perl->Icollation_name); | |
11910 | PL_collation_standard = proto_perl->Icollation_standard; | |
11911 | PL_collxfrm_base = proto_perl->Icollxfrm_base; | |
11912 | PL_collxfrm_mult = proto_perl->Icollxfrm_mult; | |
11913 | #endif /* USE_LOCALE_COLLATE */ | |
11914 | ||
11915 | #ifdef USE_LOCALE_NUMERIC | |
11916 | PL_numeric_name = SAVEPV(proto_perl->Inumeric_name); | |
11917 | PL_numeric_standard = proto_perl->Inumeric_standard; | |
11918 | PL_numeric_local = proto_perl->Inumeric_local; | |
d2d73c3e | 11919 | PL_numeric_radix_sv = sv_dup_inc(proto_perl->Inumeric_radix_sv, param); |
1d7c1841 GS |
11920 | #endif /* !USE_LOCALE_NUMERIC */ |
11921 | ||
11922 | /* utf8 character classes */ | |
d2d73c3e AB |
11923 | PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum, param); |
11924 | PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc, param); | |
11925 | PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii, param); | |
11926 | PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha, param); | |
11927 | PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space, param); | |
11928 | PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl, param); | |
11929 | PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph, param); | |
11930 | PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit, param); | |
11931 | PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper, param); | |
11932 | PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower, param); | |
11933 | PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print, param); | |
11934 | PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct, param); | |
11935 | PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit, param); | |
11936 | PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark, param); | |
11937 | PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper, param); | |
11938 | PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle, param); | |
11939 | PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower, param); | |
b4e400f9 | 11940 | PL_utf8_tofold = sv_dup_inc(proto_perl->Iutf8_tofold, param); |
82686b01 JH |
11941 | PL_utf8_idstart = sv_dup_inc(proto_perl->Iutf8_idstart, param); |
11942 | PL_utf8_idcont = sv_dup_inc(proto_perl->Iutf8_idcont, param); | |
1d7c1841 | 11943 | |
6c3182a5 | 11944 | /* Did the locale setup indicate UTF-8? */ |
9769094f | 11945 | PL_utf8locale = proto_perl->Iutf8locale; |
6c3182a5 JH |
11946 | /* Unicode features (see perlrun/-C) */ |
11947 | PL_unicode = proto_perl->Iunicode; | |
11948 | ||
11949 | /* Pre-5.8 signals control */ | |
11950 | PL_signals = proto_perl->Isignals; | |
11951 | ||
11952 | /* times() ticks per second */ | |
11953 | PL_clocktick = proto_perl->Iclocktick; | |
11954 | ||
11955 | /* Recursion stopper for PerlIO_find_layer */ | |
11956 | PL_in_load_module = proto_perl->Iin_load_module; | |
11957 | ||
11958 | /* sort() routine */ | |
11959 | PL_sort_RealCmp = proto_perl->Isort_RealCmp; | |
11960 | ||
57c6e6d2 JH |
11961 | /* Not really needed/useful since the reenrant_retint is "volatile", |
11962 | * but do it for consistency's sake. */ | |
11963 | PL_reentrant_retint = proto_perl->Ireentrant_retint; | |
11964 | ||
15a5279a JH |
11965 | /* Hooks to shared SVs and locks. */ |
11966 | PL_sharehook = proto_perl->Isharehook; | |
11967 | PL_lockhook = proto_perl->Ilockhook; | |
11968 | PL_unlockhook = proto_perl->Iunlockhook; | |
11969 | PL_threadhook = proto_perl->Ithreadhook; | |
11970 | ||
bce260cd JH |
11971 | PL_runops_std = proto_perl->Irunops_std; |
11972 | PL_runops_dbg = proto_perl->Irunops_dbg; | |
11973 | ||
11974 | #ifdef THREADS_HAVE_PIDS | |
11975 | PL_ppid = proto_perl->Ippid; | |
11976 | #endif | |
11977 | ||
1d7c1841 GS |
11978 | /* swatch cache */ |
11979 | PL_last_swash_hv = Nullhv; /* reinits on demand */ | |
11980 | PL_last_swash_klen = 0; | |
11981 | PL_last_swash_key[0]= '\0'; | |
11982 | PL_last_swash_tmps = (U8*)NULL; | |
11983 | PL_last_swash_slen = 0; | |
11984 | ||
1d7c1841 GS |
11985 | PL_glob_index = proto_perl->Iglob_index; |
11986 | PL_srand_called = proto_perl->Isrand_called; | |
504f80c1 | 11987 | PL_hash_seed = proto_perl->Ihash_seed; |
008fb0c0 | 11988 | PL_rehash_seed = proto_perl->Irehash_seed; |
1d7c1841 GS |
11989 | PL_uudmap['M'] = 0; /* reinits on demand */ |
11990 | PL_bitcount = Nullch; /* reinits on demand */ | |
11991 | ||
66fe0623 NIS |
11992 | if (proto_perl->Ipsig_pend) { |
11993 | Newz(0, PL_psig_pend, SIG_SIZE, int); | |
9dd79c3f | 11994 | } |
66fe0623 NIS |
11995 | else { |
11996 | PL_psig_pend = (int*)NULL; | |
11997 | } | |
11998 | ||
1d7c1841 | 11999 | if (proto_perl->Ipsig_ptr) { |
76d3c696 JH |
12000 | Newz(0, PL_psig_ptr, SIG_SIZE, SV*); |
12001 | Newz(0, PL_psig_name, SIG_SIZE, SV*); | |
76d3c696 | 12002 | for (i = 1; i < SIG_SIZE; i++) { |
d2d73c3e AB |
12003 | PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i], param); |
12004 | PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i], param); | |
1d7c1841 GS |
12005 | } |
12006 | } | |
12007 | else { | |
12008 | PL_psig_ptr = (SV**)NULL; | |
12009 | PL_psig_name = (SV**)NULL; | |
12010 | } | |
12011 | ||
12012 | /* thrdvar.h stuff */ | |
12013 | ||
a0739874 | 12014 | if (flags & CLONEf_COPY_STACKS) { |
1d7c1841 GS |
12015 | /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */ |
12016 | PL_tmps_ix = proto_perl->Ttmps_ix; | |
12017 | PL_tmps_max = proto_perl->Ttmps_max; | |
12018 | PL_tmps_floor = proto_perl->Ttmps_floor; | |
12019 | Newz(50, PL_tmps_stack, PL_tmps_max, SV*); | |
12020 | i = 0; | |
12021 | while (i <= PL_tmps_ix) { | |
d2d73c3e | 12022 | PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i], param); |
1d7c1841 GS |
12023 | ++i; |
12024 | } | |
12025 | ||
12026 | /* next PUSHMARK() sets *(PL_markstack_ptr+1) */ | |
12027 | i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack; | |
12028 | Newz(54, PL_markstack, i, I32); | |
12029 | PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max | |
12030 | - proto_perl->Tmarkstack); | |
12031 | PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr | |
12032 | - proto_perl->Tmarkstack); | |
12033 | Copy(proto_perl->Tmarkstack, PL_markstack, | |
12034 | PL_markstack_ptr - PL_markstack + 1, I32); | |
12035 | ||
12036 | /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix] | |
12037 | * NOTE: unlike the others! */ | |
12038 | PL_scopestack_ix = proto_perl->Tscopestack_ix; | |
12039 | PL_scopestack_max = proto_perl->Tscopestack_max; | |
12040 | Newz(54, PL_scopestack, PL_scopestack_max, I32); | |
12041 | Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32); | |
12042 | ||
12043 | /* next push_return() sets PL_retstack[PL_retstack_ix] | |
12044 | * NOTE: unlike the others! */ | |
12045 | PL_retstack_ix = proto_perl->Tretstack_ix; | |
12046 | PL_retstack_max = proto_perl->Tretstack_max; | |
12047 | Newz(54, PL_retstack, PL_retstack_max, OP*); | |
ce0a1ae0 | 12048 | Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, OP*); |
1d7c1841 GS |
12049 | |
12050 | /* NOTE: si_dup() looks at PL_markstack */ | |
d2d73c3e | 12051 | PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo, param); |
1d7c1841 GS |
12052 | |
12053 | /* PL_curstack = PL_curstackinfo->si_stack; */ | |
d2d73c3e AB |
12054 | PL_curstack = av_dup(proto_perl->Tcurstack, param); |
12055 | PL_mainstack = av_dup(proto_perl->Tmainstack, param); | |
1d7c1841 GS |
12056 | |
12057 | /* next PUSHs() etc. set *(PL_stack_sp+1) */ | |
12058 | PL_stack_base = AvARRAY(PL_curstack); | |
12059 | PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp | |
12060 | - proto_perl->Tstack_base); | |
12061 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); | |
12062 | ||
12063 | /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix] | |
12064 | * NOTE: unlike the others! */ | |
12065 | PL_savestack_ix = proto_perl->Tsavestack_ix; | |
12066 | PL_savestack_max = proto_perl->Tsavestack_max; | |
12067 | /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/ | |
d2d73c3e | 12068 | PL_savestack = ss_dup(proto_perl, param); |
1d7c1841 GS |
12069 | } |
12070 | else { | |
12071 | init_stacks(); | |
985e7056 | 12072 | ENTER; /* perl_destruct() wants to LEAVE; */ |
1d7c1841 GS |
12073 | } |
12074 | ||
12075 | PL_start_env = proto_perl->Tstart_env; /* XXXXXX */ | |
12076 | PL_top_env = &PL_start_env; | |
12077 | ||
12078 | PL_op = proto_perl->Top; | |
12079 | ||
12080 | PL_Sv = Nullsv; | |
12081 | PL_Xpv = (XPV*)NULL; | |
12082 | PL_na = proto_perl->Tna; | |
12083 | ||
12084 | PL_statbuf = proto_perl->Tstatbuf; | |
12085 | PL_statcache = proto_perl->Tstatcache; | |
d2d73c3e AB |
12086 | PL_statgv = gv_dup(proto_perl->Tstatgv, param); |
12087 | PL_statname = sv_dup_inc(proto_perl->Tstatname, param); | |
1d7c1841 GS |
12088 | #ifdef HAS_TIMES |
12089 | PL_timesbuf = proto_perl->Ttimesbuf; | |
12090 | #endif | |
12091 | ||
12092 | PL_tainted = proto_perl->Ttainted; | |
12093 | PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */ | |
d2d73c3e AB |
12094 | PL_rs = sv_dup_inc(proto_perl->Trs, param); |
12095 | PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv, param); | |
12096 | PL_ofs_sv = sv_dup_inc(proto_perl->Tofs_sv, param); | |
12097 | PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv, param); | |
1d7c1841 | 12098 | PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */ |
d2d73c3e AB |
12099 | PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget, param); |
12100 | PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget, param); | |
12101 | PL_formtarget = sv_dup(proto_perl->Tformtarget, param); | |
1d7c1841 GS |
12102 | |
12103 | PL_restartop = proto_perl->Trestartop; | |
12104 | PL_in_eval = proto_perl->Tin_eval; | |
12105 | PL_delaymagic = proto_perl->Tdelaymagic; | |
12106 | PL_dirty = proto_perl->Tdirty; | |
12107 | PL_localizing = proto_perl->Tlocalizing; | |
12108 | ||
14dd3ad8 | 12109 | #ifdef PERL_FLEXIBLE_EXCEPTIONS |
1d7c1841 | 12110 | PL_protect = proto_perl->Tprotect; |
14dd3ad8 | 12111 | #endif |
d2d73c3e | 12112 | PL_errors = sv_dup_inc(proto_perl->Terrors, param); |
dd28f7bb | 12113 | PL_hv_fetch_ent_mh = Nullhe; |
1d7c1841 GS |
12114 | PL_modcount = proto_perl->Tmodcount; |
12115 | PL_lastgotoprobe = Nullop; | |
12116 | PL_dumpindent = proto_perl->Tdumpindent; | |
12117 | ||
12118 | PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl); | |
d2d73c3e AB |
12119 | PL_sortstash = hv_dup(proto_perl->Tsortstash, param); |
12120 | PL_firstgv = gv_dup(proto_perl->Tfirstgv, param); | |
12121 | PL_secondgv = gv_dup(proto_perl->Tsecondgv, param); | |
1d7c1841 GS |
12122 | PL_sortcxix = proto_perl->Tsortcxix; |
12123 | PL_efloatbuf = Nullch; /* reinits on demand */ | |
12124 | PL_efloatsize = 0; /* reinits on demand */ | |
12125 | ||
12126 | /* regex stuff */ | |
12127 | ||
12128 | PL_screamfirst = NULL; | |
12129 | PL_screamnext = NULL; | |
12130 | PL_maxscream = -1; /* reinits on demand */ | |
12131 | PL_lastscream = Nullsv; | |
12132 | ||
12133 | PL_watchaddr = NULL; | |
12134 | PL_watchok = Nullch; | |
12135 | ||
12136 | PL_regdummy = proto_perl->Tregdummy; | |
1d7c1841 GS |
12137 | PL_regprecomp = Nullch; |
12138 | PL_regnpar = 0; | |
12139 | PL_regsize = 0; | |
1d7c1841 GS |
12140 | PL_colorset = 0; /* reinits PL_colors[] */ |
12141 | /*PL_colors[6] = {0,0,0,0,0,0};*/ | |
1d7c1841 GS |
12142 | PL_reginput = Nullch; |
12143 | PL_regbol = Nullch; | |
12144 | PL_regeol = Nullch; | |
12145 | PL_regstartp = (I32*)NULL; | |
12146 | PL_regendp = (I32*)NULL; | |
12147 | PL_reglastparen = (U32*)NULL; | |
2d862feb | 12148 | PL_reglastcloseparen = (U32*)NULL; |
1d7c1841 | 12149 | PL_regtill = Nullch; |
1d7c1841 GS |
12150 | PL_reg_start_tmp = (char**)NULL; |
12151 | PL_reg_start_tmpl = 0; | |
12152 | PL_regdata = (struct reg_data*)NULL; | |
12153 | PL_bostr = Nullch; | |
12154 | PL_reg_flags = 0; | |
12155 | PL_reg_eval_set = 0; | |
12156 | PL_regnarrate = 0; | |
12157 | PL_regprogram = (regnode*)NULL; | |
12158 | PL_regindent = 0; | |
12159 | PL_regcc = (CURCUR*)NULL; | |
12160 | PL_reg_call_cc = (struct re_cc_state*)NULL; | |
12161 | PL_reg_re = (regexp*)NULL; | |
12162 | PL_reg_ganch = Nullch; | |
12163 | PL_reg_sv = Nullsv; | |
53c4c00c | 12164 | PL_reg_match_utf8 = FALSE; |
1d7c1841 GS |
12165 | PL_reg_magic = (MAGIC*)NULL; |
12166 | PL_reg_oldpos = 0; | |
12167 | PL_reg_oldcurpm = (PMOP*)NULL; | |
12168 | PL_reg_curpm = (PMOP*)NULL; | |
12169 | PL_reg_oldsaved = Nullch; | |
12170 | PL_reg_oldsavedlen = 0; | |
ed252734 | 12171 | #ifdef PERL_COPY_ON_WRITE |
504cff3b | 12172 | PL_nrs = Nullsv; |
ed252734 | 12173 | #endif |
1d7c1841 GS |
12174 | PL_reg_maxiter = 0; |
12175 | PL_reg_leftiter = 0; | |
12176 | PL_reg_poscache = Nullch; | |
12177 | PL_reg_poscache_size= 0; | |
12178 | ||
12179 | /* RE engine - function pointers */ | |
12180 | PL_regcompp = proto_perl->Tregcompp; | |
12181 | PL_regexecp = proto_perl->Tregexecp; | |
12182 | PL_regint_start = proto_perl->Tregint_start; | |
12183 | PL_regint_string = proto_perl->Tregint_string; | |
12184 | PL_regfree = proto_perl->Tregfree; | |
12185 | ||
12186 | PL_reginterp_cnt = 0; | |
12187 | PL_reg_starttry = 0; | |
12188 | ||
a2efc822 SC |
12189 | /* Pluggable optimizer */ |
12190 | PL_peepp = proto_perl->Tpeepp; | |
12191 | ||
081fc587 AB |
12192 | PL_stashcache = newHV(); |
12193 | ||
a0739874 DM |
12194 | if (!(flags & CLONEf_KEEP_PTR_TABLE)) { |
12195 | ptr_table_free(PL_ptr_table); | |
12196 | PL_ptr_table = NULL; | |
12197 | } | |
8cf8f3d1 | 12198 | |
f284b03f AMS |
12199 | /* Call the ->CLONE method, if it exists, for each of the stashes |
12200 | identified by sv_dup() above. | |
12201 | */ | |
d2d73c3e AB |
12202 | while(av_len(param->stashes) != -1) { |
12203 | HV* stash = (HV*) av_shift(param->stashes); | |
f284b03f AMS |
12204 | GV* cloner = gv_fetchmethod_autoload(stash, "CLONE", 0); |
12205 | if (cloner && GvCV(cloner)) { | |
12206 | dSP; | |
12207 | ENTER; | |
12208 | SAVETMPS; | |
12209 | PUSHMARK(SP); | |
dc507217 | 12210 | XPUSHs(sv_2mortal(newSVpv(HvNAME(stash), 0))); |
f284b03f AMS |
12211 | PUTBACK; |
12212 | call_sv((SV*)GvCV(cloner), G_DISCARD); | |
12213 | FREETMPS; | |
12214 | LEAVE; | |
12215 | } | |
4a09accc | 12216 | } |
a0739874 | 12217 | |
dc507217 | 12218 | SvREFCNT_dec(param->stashes); |
dc507217 | 12219 | |
1d7c1841 | 12220 | return my_perl; |
1d7c1841 GS |
12221 | } |
12222 | ||
1d7c1841 | 12223 | #endif /* USE_ITHREADS */ |
a0ae6670 | 12224 | |
9f4817db | 12225 | /* |
ccfc67b7 JH |
12226 | =head1 Unicode Support |
12227 | ||
9f4817db JH |
12228 | =for apidoc sv_recode_to_utf8 |
12229 | ||
5d170f3a JH |
12230 | The encoding is assumed to be an Encode object, on entry the PV |
12231 | of the sv is assumed to be octets in that encoding, and the sv | |
12232 | will be converted into Unicode (and UTF-8). | |
9f4817db | 12233 | |
5d170f3a JH |
12234 | If the sv already is UTF-8 (or if it is not POK), or if the encoding |
12235 | is not a reference, nothing is done to the sv. If the encoding is not | |
1768d7eb JH |
12236 | an C<Encode::XS> Encoding object, bad things will happen. |
12237 | (See F<lib/encoding.pm> and L<Encode>). | |
9f4817db | 12238 | |
5d170f3a | 12239 | The PV of the sv is returned. |
9f4817db | 12240 | |
5d170f3a JH |
12241 | =cut */ |
12242 | ||
12243 | char * | |
12244 | Perl_sv_recode_to_utf8(pTHX_ SV *sv, SV *encoding) | |
12245 | { | |
220e2d4e | 12246 | if (SvPOK(sv) && !SvUTF8(sv) && !IN_BYTES && SvROK(encoding)) { |
d0063567 DK |
12247 | SV *uni; |
12248 | STRLEN len; | |
12249 | char *s; | |
12250 | dSP; | |
12251 | ENTER; | |
12252 | SAVETMPS; | |
220e2d4e | 12253 | save_re_context(); |
d0063567 DK |
12254 | PUSHMARK(sp); |
12255 | EXTEND(SP, 3); | |
12256 | XPUSHs(encoding); | |
12257 | XPUSHs(sv); | |
f9893866 NIS |
12258 | /* |
12259 | NI-S 2002/07/09 | |
12260 | Passing sv_yes is wrong - it needs to be or'ed set of constants | |
12261 | for Encode::XS, while UTf-8 decode (currently) assumes a true value means | |
12262 | remove converted chars from source. | |
12263 | ||
12264 | Both will default the value - let them. | |
12265 | ||
d0063567 | 12266 | XPUSHs(&PL_sv_yes); |
f9893866 | 12267 | */ |
d0063567 DK |
12268 | PUTBACK; |
12269 | call_method("decode", G_SCALAR); | |
12270 | SPAGAIN; | |
12271 | uni = POPs; | |
12272 | PUTBACK; | |
12273 | s = SvPV(uni, len); | |
d0063567 DK |
12274 | if (s != SvPVX(sv)) { |
12275 | SvGROW(sv, len + 1); | |
12276 | Move(s, SvPVX(sv), len, char); | |
12277 | SvCUR_set(sv, len); | |
12278 | SvPVX(sv)[len] = 0; | |
12279 | } | |
12280 | FREETMPS; | |
12281 | LEAVE; | |
d0063567 | 12282 | SvUTF8_on(sv); |
f9893866 NIS |
12283 | } |
12284 | return SvPVX(sv); | |
9f4817db JH |
12285 | } |
12286 | ||
220e2d4e IH |
12287 | /* |
12288 | =for apidoc sv_cat_decode | |
12289 | ||
12290 | The encoding is assumed to be an Encode object, the PV of the ssv is | |
12291 | assumed to be octets in that encoding and decoding the input starts | |
12292 | from the position which (PV + *offset) pointed to. The dsv will be | |
12293 | concatenated the decoded UTF-8 string from ssv. Decoding will terminate | |
12294 | when the string tstr appears in decoding output or the input ends on | |
12295 | the PV of the ssv. The value which the offset points will be modified | |
12296 | to the last input position on the ssv. | |
68795e93 | 12297 | |
220e2d4e IH |
12298 | Returns TRUE if the terminator was found, else returns FALSE. |
12299 | ||
12300 | =cut */ | |
12301 | ||
12302 | bool | |
12303 | Perl_sv_cat_decode(pTHX_ SV *dsv, SV *encoding, | |
12304 | SV *ssv, int *offset, char *tstr, int tlen) | |
12305 | { | |
a73e8557 | 12306 | bool ret = FALSE; |
220e2d4e | 12307 | if (SvPOK(ssv) && SvPOK(dsv) && SvROK(encoding) && offset) { |
220e2d4e IH |
12308 | SV *offsv; |
12309 | dSP; | |
12310 | ENTER; | |
12311 | SAVETMPS; | |
12312 | save_re_context(); | |
12313 | PUSHMARK(sp); | |
12314 | EXTEND(SP, 6); | |
12315 | XPUSHs(encoding); | |
12316 | XPUSHs(dsv); | |
12317 | XPUSHs(ssv); | |
12318 | XPUSHs(offsv = sv_2mortal(newSViv(*offset))); | |
12319 | XPUSHs(sv_2mortal(newSVpvn(tstr, tlen))); | |
12320 | PUTBACK; | |
12321 | call_method("cat_decode", G_SCALAR); | |
12322 | SPAGAIN; | |
12323 | ret = SvTRUE(TOPs); | |
12324 | *offset = SvIV(offsv); | |
12325 | PUTBACK; | |
12326 | FREETMPS; | |
12327 | LEAVE; | |
220e2d4e | 12328 | } |
a73e8557 JH |
12329 | else |
12330 | Perl_croak(aTHX_ "Invalid argument to sv_cat_decode"); | |
12331 | return ret; | |
220e2d4e | 12332 | } |
f9893866 | 12333 |