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__"; | |
7a5fa8a2 | 706 | else |
29489e7c DM |
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); | |
112dcc46 RGS |
792 | I32 index = 0; |
793 | SV *keysv = Nullsv; | |
29489e7c DM |
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; | |
7a5fa8a2 | 972 | return S_varname(aTHX_ gv, "$", 0, |
29489e7c DM |
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) { | |
112dcc46 | 1075 | SV* varname = Nullsv; |
29489e7c DM |
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); | |
6bf554b4 | 3745 | SvPOKp_on(sv); |
e90e2364 | 3746 | return strcpy(s, t); |
a0d0e21e | 3747 | } |
463ee0b2 LW |
3748 | } |
3749 | ||
645c22ef | 3750 | /* |
6050d10e JP |
3751 | =for apidoc sv_copypv |
3752 | ||
3753 | Copies a stringified representation of the source SV into the | |
3754 | destination SV. Automatically performs any necessary mg_get and | |
54f0641b | 3755 | coercion of numeric values into strings. Guaranteed to preserve |
6050d10e | 3756 | UTF-8 flag even from overloaded objects. Similar in nature to |
54f0641b NIS |
3757 | sv_2pv[_flags] but operates directly on an SV instead of just the |
3758 | string. Mostly uses sv_2pv_flags to do its work, except when that | |
6050d10e JP |
3759 | would lose the UTF-8'ness of the PV. |
3760 | ||
3761 | =cut | |
3762 | */ | |
3763 | ||
3764 | void | |
3765 | Perl_sv_copypv(pTHX_ SV *dsv, register SV *ssv) | |
3766 | { | |
446eaa42 YST |
3767 | STRLEN len; |
3768 | char *s; | |
3769 | s = SvPV(ssv,len); | |
cb50f42d | 3770 | sv_setpvn(dsv,s,len); |
446eaa42 | 3771 | if (SvUTF8(ssv)) |
cb50f42d | 3772 | SvUTF8_on(dsv); |
446eaa42 | 3773 | else |
cb50f42d | 3774 | SvUTF8_off(dsv); |
6050d10e JP |
3775 | } |
3776 | ||
3777 | /* | |
645c22ef DM |
3778 | =for apidoc sv_2pvbyte_nolen |
3779 | ||
3780 | Return a pointer to the byte-encoded representation of the SV. | |
1e54db1a | 3781 | May cause the SV to be downgraded from UTF-8 as a side-effect. |
645c22ef DM |
3782 | |
3783 | Usually accessed via the C<SvPVbyte_nolen> macro. | |
3784 | ||
3785 | =cut | |
3786 | */ | |
3787 | ||
7340a771 GS |
3788 | char * |
3789 | Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv) | |
3790 | { | |
560a288e GS |
3791 | STRLEN n_a; |
3792 | return sv_2pvbyte(sv, &n_a); | |
7340a771 GS |
3793 | } |
3794 | ||
645c22ef DM |
3795 | /* |
3796 | =for apidoc sv_2pvbyte | |
3797 | ||
3798 | Return a pointer to the byte-encoded representation of the SV, and set *lp | |
1e54db1a | 3799 | to its length. May cause the SV to be downgraded from UTF-8 as a |
645c22ef DM |
3800 | side-effect. |
3801 | ||
3802 | Usually accessed via the C<SvPVbyte> macro. | |
3803 | ||
3804 | =cut | |
3805 | */ | |
3806 | ||
7340a771 GS |
3807 | char * |
3808 | Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp) | |
3809 | { | |
0875d2fe NIS |
3810 | sv_utf8_downgrade(sv,0); |
3811 | return SvPV(sv,*lp); | |
7340a771 GS |
3812 | } |
3813 | ||
645c22ef DM |
3814 | /* |
3815 | =for apidoc sv_2pvutf8_nolen | |
3816 | ||
1e54db1a JH |
3817 | Return a pointer to the UTF-8-encoded representation of the SV. |
3818 | May cause the SV to be upgraded to UTF-8 as a side-effect. | |
645c22ef DM |
3819 | |
3820 | Usually accessed via the C<SvPVutf8_nolen> macro. | |
3821 | ||
3822 | =cut | |
3823 | */ | |
3824 | ||
7340a771 GS |
3825 | char * |
3826 | Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv) | |
3827 | { | |
560a288e GS |
3828 | STRLEN n_a; |
3829 | return sv_2pvutf8(sv, &n_a); | |
7340a771 GS |
3830 | } |
3831 | ||
645c22ef DM |
3832 | /* |
3833 | =for apidoc sv_2pvutf8 | |
3834 | ||
1e54db1a JH |
3835 | Return a pointer to the UTF-8-encoded representation of the SV, and set *lp |
3836 | to its length. May cause the SV to be upgraded to UTF-8 as a side-effect. | |
645c22ef DM |
3837 | |
3838 | Usually accessed via the C<SvPVutf8> macro. | |
3839 | ||
3840 | =cut | |
3841 | */ | |
3842 | ||
7340a771 GS |
3843 | char * |
3844 | Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp) | |
3845 | { | |
560a288e | 3846 | sv_utf8_upgrade(sv); |
7d59b7e4 | 3847 | return SvPV(sv,*lp); |
7340a771 | 3848 | } |
1c846c1f | 3849 | |
645c22ef DM |
3850 | /* |
3851 | =for apidoc sv_2bool | |
3852 | ||
3853 | This function is only called on magical items, and is only used by | |
8cf8f3d1 | 3854 | sv_true() or its macro equivalent. |
645c22ef DM |
3855 | |
3856 | =cut | |
3857 | */ | |
3858 | ||
463ee0b2 | 3859 | bool |
864dbfa3 | 3860 | Perl_sv_2bool(pTHX_ register SV *sv) |
463ee0b2 | 3861 | { |
8990e307 | 3862 | if (SvGMAGICAL(sv)) |
463ee0b2 LW |
3863 | mg_get(sv); |
3864 | ||
a0d0e21e LW |
3865 | if (!SvOK(sv)) |
3866 | return 0; | |
3867 | if (SvROK(sv)) { | |
a0d0e21e | 3868 | SV* tmpsv; |
1554e226 | 3869 | if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) && |
9e3013b1 | 3870 | (!SvROK(tmpsv) || (SvRV(tmpsv) != SvRV(sv)))) |
8a31060d | 3871 | return (bool)SvTRUE(tmpsv); |
a0d0e21e LW |
3872 | return SvRV(sv) != 0; |
3873 | } | |
463ee0b2 | 3874 | if (SvPOKp(sv)) { |
11343788 MB |
3875 | register XPV* Xpvtmp; |
3876 | if ((Xpvtmp = (XPV*)SvANY(sv)) && | |
3877 | (*Xpvtmp->xpv_pv > '0' || | |
3878 | Xpvtmp->xpv_cur > 1 || | |
3879 | (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0'))) | |
463ee0b2 LW |
3880 | return 1; |
3881 | else | |
3882 | return 0; | |
3883 | } | |
3884 | else { | |
3885 | if (SvIOKp(sv)) | |
3886 | return SvIVX(sv) != 0; | |
3887 | else { | |
3888 | if (SvNOKp(sv)) | |
3889 | return SvNVX(sv) != 0.0; | |
3890 | else | |
3891 | return FALSE; | |
3892 | } | |
3893 | } | |
79072805 LW |
3894 | } |
3895 | ||
09540bc3 JH |
3896 | /* sv_utf8_upgrade() is now a macro using sv_utf8_upgrade_flags(); |
3897 | * this function provided for binary compatibility only | |
3898 | */ | |
3899 | ||
3900 | ||
3901 | STRLEN | |
3902 | Perl_sv_utf8_upgrade(pTHX_ register SV *sv) | |
3903 | { | |
3904 | return sv_utf8_upgrade_flags(sv, SV_GMAGIC); | |
3905 | } | |
3906 | ||
c461cf8f JH |
3907 | /* |
3908 | =for apidoc sv_utf8_upgrade | |
3909 | ||
78ea37eb | 3910 | Converts the PV of an SV to its UTF-8-encoded form. |
645c22ef | 3911 | Forces the SV to string form if it is not already. |
4411f3b6 NIS |
3912 | Always sets the SvUTF8 flag to avoid future validity checks even |
3913 | if all the bytes have hibit clear. | |
c461cf8f | 3914 | |
13a6c0e0 JH |
3915 | This is not as a general purpose byte encoding to Unicode interface: |
3916 | use the Encode extension for that. | |
3917 | ||
8d6d96c1 HS |
3918 | =for apidoc sv_utf8_upgrade_flags |
3919 | ||
78ea37eb | 3920 | Converts the PV of an SV to its UTF-8-encoded form. |
645c22ef | 3921 | Forces the SV to string form if it is not already. |
8d6d96c1 HS |
3922 | Always sets the SvUTF8 flag to avoid future validity checks even |
3923 | if all the bytes have hibit clear. If C<flags> has C<SV_GMAGIC> bit set, | |
3924 | will C<mg_get> on C<sv> if appropriate, else not. C<sv_utf8_upgrade> and | |
3925 | C<sv_utf8_upgrade_nomg> are implemented in terms of this function. | |
3926 | ||
13a6c0e0 JH |
3927 | This is not as a general purpose byte encoding to Unicode interface: |
3928 | use the Encode extension for that. | |
3929 | ||
8d6d96c1 HS |
3930 | =cut |
3931 | */ | |
3932 | ||
3933 | STRLEN | |
3934 | Perl_sv_utf8_upgrade_flags(pTHX_ register SV *sv, I32 flags) | |
3935 | { | |
db42d148 | 3936 | U8 *s, *t, *e; |
511c2ff0 | 3937 | int hibit = 0; |
560a288e | 3938 | |
808c356f RGS |
3939 | if (sv == &PL_sv_undef) |
3940 | return 0; | |
e0e62c2a NIS |
3941 | if (!SvPOK(sv)) { |
3942 | STRLEN len = 0; | |
d52b7888 NC |
3943 | if (SvREADONLY(sv) && (SvPOKp(sv) || SvIOKp(sv) || SvNOKp(sv))) { |
3944 | (void) sv_2pv_flags(sv,&len, flags); | |
3945 | if (SvUTF8(sv)) | |
3946 | return len; | |
3947 | } else { | |
3948 | (void) SvPV_force(sv,len); | |
3949 | } | |
e0e62c2a | 3950 | } |
4411f3b6 | 3951 | |
f5cee72b | 3952 | if (SvUTF8(sv)) { |
5fec3b1d | 3953 | return SvCUR(sv); |
f5cee72b | 3954 | } |
5fec3b1d | 3955 | |
765f542d NC |
3956 | if (SvIsCOW(sv)) { |
3957 | sv_force_normal_flags(sv, 0); | |
db42d148 NIS |
3958 | } |
3959 | ||
88632417 | 3960 | if (PL_encoding && !(flags & SV_UTF8_NO_ENCODING)) |
799ef3cb | 3961 | sv_recode_to_utf8(sv, PL_encoding); |
9f4817db | 3962 | else { /* Assume Latin-1/EBCDIC */ |
0a378802 JH |
3963 | /* This function could be much more efficient if we |
3964 | * had a FLAG in SVs to signal if there are any hibit | |
3965 | * chars in the PV. Given that there isn't such a flag | |
3966 | * make the loop as fast as possible. */ | |
3967 | s = (U8 *) SvPVX(sv); | |
3968 | e = (U8 *) SvEND(sv); | |
3969 | t = s; | |
3970 | while (t < e) { | |
3971 | U8 ch = *t++; | |
3972 | if ((hibit = !NATIVE_IS_INVARIANT(ch))) | |
3973 | break; | |
3974 | } | |
3975 | if (hibit) { | |
3976 | STRLEN len; | |
cc2578a4 | 3977 | (void)SvOOK_off(sv); |
06a45632 | 3978 | s = (U8*)SvPVX(sv); |
0a378802 JH |
3979 | len = SvCUR(sv) + 1; /* Plus the \0 */ |
3980 | SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len); | |
3981 | SvCUR(sv) = len - 1; | |
3982 | if (SvLEN(sv) != 0) | |
3983 | Safefree(s); /* No longer using what was there before. */ | |
3984 | SvLEN(sv) = len; /* No longer know the real size. */ | |
3985 | } | |
9f4817db JH |
3986 | /* Mark as UTF-8 even if no hibit - saves scanning loop */ |
3987 | SvUTF8_on(sv); | |
560a288e | 3988 | } |
4411f3b6 | 3989 | return SvCUR(sv); |
560a288e GS |
3990 | } |
3991 | ||
c461cf8f JH |
3992 | /* |
3993 | =for apidoc sv_utf8_downgrade | |
3994 | ||
78ea37eb TS |
3995 | Attempts to convert the PV of an SV from characters to bytes. |
3996 | If the PV contains a character beyond byte, this conversion will fail; | |
3997 | in this case, either returns false or, if C<fail_ok> is not | |
c461cf8f JH |
3998 | true, croaks. |
3999 | ||
13a6c0e0 JH |
4000 | This is not as a general purpose Unicode to byte encoding interface: |
4001 | use the Encode extension for that. | |
4002 | ||
c461cf8f JH |
4003 | =cut |
4004 | */ | |
4005 | ||
560a288e GS |
4006 | bool |
4007 | Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok) | |
4008 | { | |
78ea37eb | 4009 | if (SvPOKp(sv) && SvUTF8(sv)) { |
fa301091 | 4010 | if (SvCUR(sv)) { |
03cfe0ae | 4011 | U8 *s; |
652088fc | 4012 | STRLEN len; |
fa301091 | 4013 | |
765f542d NC |
4014 | if (SvIsCOW(sv)) { |
4015 | sv_force_normal_flags(sv, 0); | |
4016 | } | |
03cfe0ae NIS |
4017 | s = (U8 *) SvPV(sv, len); |
4018 | if (!utf8_to_bytes(s, &len)) { | |
fa301091 JH |
4019 | if (fail_ok) |
4020 | return FALSE; | |
4021 | else { | |
4022 | if (PL_op) | |
4023 | Perl_croak(aTHX_ "Wide character in %s", | |
53e06cf0 | 4024 | OP_DESC(PL_op)); |
fa301091 JH |
4025 | else |
4026 | Perl_croak(aTHX_ "Wide character"); | |
4027 | } | |
4b3603a4 | 4028 | } |
fa301091 | 4029 | SvCUR(sv) = len; |
67e989fb | 4030 | } |
560a288e | 4031 | } |
ffebcc3e | 4032 | SvUTF8_off(sv); |
560a288e GS |
4033 | return TRUE; |
4034 | } | |
4035 | ||
c461cf8f JH |
4036 | /* |
4037 | =for apidoc sv_utf8_encode | |
4038 | ||
78ea37eb TS |
4039 | Converts the PV of an SV to UTF-8, but then turns the C<SvUTF8> |
4040 | flag off so that it looks like octets again. | |
c461cf8f JH |
4041 | |
4042 | =cut | |
4043 | */ | |
4044 | ||
560a288e GS |
4045 | void |
4046 | Perl_sv_utf8_encode(pTHX_ register SV *sv) | |
4047 | { | |
4411f3b6 | 4048 | (void) sv_utf8_upgrade(sv); |
4c94c214 NC |
4049 | if (SvIsCOW(sv)) { |
4050 | sv_force_normal_flags(sv, 0); | |
4051 | } | |
4052 | if (SvREADONLY(sv)) { | |
4053 | Perl_croak(aTHX_ PL_no_modify); | |
4054 | } | |
560a288e GS |
4055 | SvUTF8_off(sv); |
4056 | } | |
4057 | ||
4411f3b6 NIS |
4058 | /* |
4059 | =for apidoc sv_utf8_decode | |
4060 | ||
78ea37eb TS |
4061 | If the PV of the SV is an octet sequence in UTF-8 |
4062 | and contains a multiple-byte character, the C<SvUTF8> flag is turned on | |
4063 | so that it looks like a character. If the PV contains only single-byte | |
4064 | characters, the C<SvUTF8> flag stays being off. | |
4065 | Scans PV for validity and returns false if the PV is invalid UTF-8. | |
4411f3b6 NIS |
4066 | |
4067 | =cut | |
4068 | */ | |
4069 | ||
560a288e GS |
4070 | bool |
4071 | Perl_sv_utf8_decode(pTHX_ register SV *sv) | |
4072 | { | |
78ea37eb | 4073 | if (SvPOKp(sv)) { |
63cd0674 NIS |
4074 | U8 *c; |
4075 | U8 *e; | |
9cbac4c7 | 4076 | |
645c22ef DM |
4077 | /* The octets may have got themselves encoded - get them back as |
4078 | * bytes | |
4079 | */ | |
4080 | if (!sv_utf8_downgrade(sv, TRUE)) | |
560a288e GS |
4081 | return FALSE; |
4082 | ||
4083 | /* it is actually just a matter of turning the utf8 flag on, but | |
4084 | * we want to make sure everything inside is valid utf8 first. | |
4085 | */ | |
63cd0674 NIS |
4086 | c = (U8 *) SvPVX(sv); |
4087 | if (!is_utf8_string(c, SvCUR(sv)+1)) | |
67e989fb | 4088 | return FALSE; |
63cd0674 | 4089 | e = (U8 *) SvEND(sv); |
511c2ff0 | 4090 | while (c < e) { |
c4d5f83a NIS |
4091 | U8 ch = *c++; |
4092 | if (!UTF8_IS_INVARIANT(ch)) { | |
67e989fb JH |
4093 | SvUTF8_on(sv); |
4094 | break; | |
4095 | } | |
560a288e | 4096 | } |
560a288e GS |
4097 | } |
4098 | return TRUE; | |
4099 | } | |
4100 | ||
09540bc3 JH |
4101 | /* sv_setsv() is now a macro using Perl_sv_setsv_flags(); |
4102 | * this function provided for binary compatibility only | |
4103 | */ | |
4104 | ||
4105 | void | |
4106 | Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr) | |
4107 | { | |
4108 | sv_setsv_flags(dstr, sstr, SV_GMAGIC); | |
4109 | } | |
4110 | ||
954c1994 GS |
4111 | /* |
4112 | =for apidoc sv_setsv | |
4113 | ||
645c22ef DM |
4114 | Copies the contents of the source SV C<ssv> into the destination SV |
4115 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
4116 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
4117 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
4118 | content of the destination. | |
4119 | ||
4120 | You probably want to use one of the assortment of wrappers, such as | |
4121 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
4122 | C<SvSetMagicSV_nosteal>. | |
4123 | ||
8d6d96c1 HS |
4124 | =for apidoc sv_setsv_flags |
4125 | ||
645c22ef DM |
4126 | Copies the contents of the source SV C<ssv> into the destination SV |
4127 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
4128 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
4129 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
4130 | content of the destination. | |
4131 | If the C<flags> parameter has the C<SV_GMAGIC> bit set, will C<mg_get> on | |
4132 | C<ssv> if appropriate, else not. C<sv_setsv> and C<sv_setsv_nomg> are | |
4133 | implemented in terms of this function. | |
4134 | ||
4135 | You probably want to use one of the assortment of wrappers, such as | |
4136 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
4137 | C<SvSetMagicSV_nosteal>. | |
4138 | ||
4139 | This is the primary function for copying scalars, and most other | |
4140 | copy-ish functions and macros use this underneath. | |
8d6d96c1 HS |
4141 | |
4142 | =cut | |
4143 | */ | |
4144 | ||
4145 | void | |
4146 | Perl_sv_setsv_flags(pTHX_ SV *dstr, register SV *sstr, I32 flags) | |
4147 | { | |
8990e307 LW |
4148 | register U32 sflags; |
4149 | register int dtype; | |
4150 | register int stype; | |
463ee0b2 | 4151 | |
79072805 LW |
4152 | if (sstr == dstr) |
4153 | return; | |
765f542d | 4154 | SV_CHECK_THINKFIRST_COW_DROP(dstr); |
79072805 | 4155 | if (!sstr) |
3280af22 | 4156 | sstr = &PL_sv_undef; |
8990e307 LW |
4157 | stype = SvTYPE(sstr); |
4158 | dtype = SvTYPE(dstr); | |
79072805 | 4159 | |
a0d0e21e | 4160 | SvAMAGIC_off(dstr); |
7a5fa8a2 | 4161 | if ( SvVOK(dstr) ) |
ece467f9 JP |
4162 | { |
4163 | /* need to nuke the magic */ | |
4164 | mg_free(dstr); | |
4165 | SvRMAGICAL_off(dstr); | |
4166 | } | |
9e7bc3e8 | 4167 | |
463ee0b2 | 4168 | /* There's a lot of redundancy below but we're going for speed here */ |
79072805 | 4169 | |
8990e307 | 4170 | switch (stype) { |
79072805 | 4171 | case SVt_NULL: |
aece5585 | 4172 | undef_sstr: |
20408e3c GS |
4173 | if (dtype != SVt_PVGV) { |
4174 | (void)SvOK_off(dstr); | |
4175 | return; | |
4176 | } | |
4177 | break; | |
463ee0b2 | 4178 | case SVt_IV: |
aece5585 GA |
4179 | if (SvIOK(sstr)) { |
4180 | switch (dtype) { | |
4181 | case SVt_NULL: | |
8990e307 | 4182 | sv_upgrade(dstr, SVt_IV); |
aece5585 GA |
4183 | break; |
4184 | case SVt_NV: | |
8990e307 | 4185 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 GA |
4186 | break; |
4187 | case SVt_RV: | |
4188 | case SVt_PV: | |
a0d0e21e | 4189 | sv_upgrade(dstr, SVt_PVIV); |
aece5585 GA |
4190 | break; |
4191 | } | |
4192 | (void)SvIOK_only(dstr); | |
4193 | SvIVX(dstr) = SvIVX(sstr); | |
25da4f38 IZ |
4194 | if (SvIsUV(sstr)) |
4195 | SvIsUV_on(dstr); | |
27c9684d AP |
4196 | if (SvTAINTED(sstr)) |
4197 | SvTAINT(dstr); | |
aece5585 | 4198 | return; |
8990e307 | 4199 | } |
aece5585 GA |
4200 | goto undef_sstr; |
4201 | ||
463ee0b2 | 4202 | case SVt_NV: |
aece5585 GA |
4203 | if (SvNOK(sstr)) { |
4204 | switch (dtype) { | |
4205 | case SVt_NULL: | |
4206 | case SVt_IV: | |
8990e307 | 4207 | sv_upgrade(dstr, SVt_NV); |
aece5585 GA |
4208 | break; |
4209 | case SVt_RV: | |
4210 | case SVt_PV: | |
4211 | case SVt_PVIV: | |
a0d0e21e | 4212 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 GA |
4213 | break; |
4214 | } | |
4215 | SvNVX(dstr) = SvNVX(sstr); | |
4216 | (void)SvNOK_only(dstr); | |
27c9684d AP |
4217 | if (SvTAINTED(sstr)) |
4218 | SvTAINT(dstr); | |
aece5585 | 4219 | return; |
8990e307 | 4220 | } |
aece5585 GA |
4221 | goto undef_sstr; |
4222 | ||
ed6116ce | 4223 | case SVt_RV: |
8990e307 | 4224 | if (dtype < SVt_RV) |
ed6116ce | 4225 | sv_upgrade(dstr, SVt_RV); |
c07a80fd | 4226 | else if (dtype == SVt_PVGV && |
23bb1b96 | 4227 | SvROK(sstr) && SvTYPE(SvRV(sstr)) == SVt_PVGV) { |
c07a80fd | 4228 | sstr = SvRV(sstr); |
a5f75d66 | 4229 | if (sstr == dstr) { |
1d7c1841 GS |
4230 | if (GvIMPORTED(dstr) != GVf_IMPORTED |
4231 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
4232 | { | |
a5f75d66 | 4233 | GvIMPORTED_on(dstr); |
1d7c1841 | 4234 | } |
a5f75d66 AD |
4235 | GvMULTI_on(dstr); |
4236 | return; | |
4237 | } | |
c07a80fd | 4238 | goto glob_assign; |
4239 | } | |
ed6116ce | 4240 | break; |
fc36a67e | 4241 | case SVt_PVFM: |
d89fc664 NC |
4242 | #ifdef PERL_COPY_ON_WRITE |
4243 | if ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS) { | |
4244 | if (dtype < SVt_PVIV) | |
4245 | sv_upgrade(dstr, SVt_PVIV); | |
4246 | break; | |
4247 | } | |
4248 | /* Fall through */ | |
4249 | #endif | |
4250 | case SVt_PV: | |
8990e307 | 4251 | if (dtype < SVt_PV) |
463ee0b2 | 4252 | sv_upgrade(dstr, SVt_PV); |
463ee0b2 LW |
4253 | break; |
4254 | case SVt_PVIV: | |
8990e307 | 4255 | if (dtype < SVt_PVIV) |
463ee0b2 | 4256 | sv_upgrade(dstr, SVt_PVIV); |
463ee0b2 LW |
4257 | break; |
4258 | case SVt_PVNV: | |
8990e307 | 4259 | if (dtype < SVt_PVNV) |
463ee0b2 | 4260 | sv_upgrade(dstr, SVt_PVNV); |
463ee0b2 | 4261 | break; |
4633a7c4 LW |
4262 | case SVt_PVAV: |
4263 | case SVt_PVHV: | |
4264 | case SVt_PVCV: | |
4633a7c4 | 4265 | case SVt_PVIO: |
533c011a | 4266 | if (PL_op) |
cea2e8a9 | 4267 | Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0), |
53e06cf0 | 4268 | OP_NAME(PL_op)); |
4633a7c4 | 4269 | else |
cea2e8a9 | 4270 | Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0)); |
4633a7c4 LW |
4271 | break; |
4272 | ||
79072805 | 4273 | case SVt_PVGV: |
8990e307 | 4274 | if (dtype <= SVt_PVGV) { |
c07a80fd | 4275 | glob_assign: |
a5f75d66 | 4276 | if (dtype != SVt_PVGV) { |
a0d0e21e LW |
4277 | char *name = GvNAME(sstr); |
4278 | STRLEN len = GvNAMELEN(sstr); | |
b76195c2 DM |
4279 | /* don't upgrade SVt_PVLV: it can hold a glob */ |
4280 | if (dtype != SVt_PVLV) | |
4281 | sv_upgrade(dstr, SVt_PVGV); | |
14befaf4 | 4282 | sv_magic(dstr, dstr, PERL_MAGIC_glob, Nullch, 0); |
85aff577 | 4283 | GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr)); |
a0d0e21e LW |
4284 | GvNAME(dstr) = savepvn(name, len); |
4285 | GvNAMELEN(dstr) = len; | |
4286 | SvFAKE_on(dstr); /* can coerce to non-glob */ | |
4287 | } | |
7bac28a0 | 4288 | /* ahem, death to those who redefine active sort subs */ |
3280af22 NIS |
4289 | else if (PL_curstackinfo->si_type == PERLSI_SORT |
4290 | && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr))) | |
cea2e8a9 | 4291 | Perl_croak(aTHX_ "Can't redefine active sort subroutine %s", |
7bac28a0 | 4292 | GvNAME(dstr)); |
5bd07a3d | 4293 | |
7fb37951 AMS |
4294 | #ifdef GV_UNIQUE_CHECK |
4295 | if (GvUNIQUE((GV*)dstr)) { | |
5bd07a3d DM |
4296 | Perl_croak(aTHX_ PL_no_modify); |
4297 | } | |
4298 | #endif | |
4299 | ||
a0d0e21e | 4300 | (void)SvOK_off(dstr); |
a5f75d66 | 4301 | GvINTRO_off(dstr); /* one-shot flag */ |
1edc1566 | 4302 | gp_free((GV*)dstr); |
79072805 | 4303 | GvGP(dstr) = gp_ref(GvGP(sstr)); |
27c9684d AP |
4304 | if (SvTAINTED(sstr)) |
4305 | SvTAINT(dstr); | |
1d7c1841 GS |
4306 | if (GvIMPORTED(dstr) != GVf_IMPORTED |
4307 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
4308 | { | |
a5f75d66 | 4309 | GvIMPORTED_on(dstr); |
1d7c1841 | 4310 | } |
a5f75d66 | 4311 | GvMULTI_on(dstr); |
79072805 LW |
4312 | return; |
4313 | } | |
4314 | /* FALL THROUGH */ | |
4315 | ||
4316 | default: | |
8d6d96c1 | 4317 | if (SvGMAGICAL(sstr) && (flags & SV_GMAGIC)) { |
973f89ab | 4318 | mg_get(sstr); |
eb160463 | 4319 | if ((int)SvTYPE(sstr) != stype) { |
973f89ab CS |
4320 | stype = SvTYPE(sstr); |
4321 | if (stype == SVt_PVGV && dtype <= SVt_PVGV) | |
4322 | goto glob_assign; | |
4323 | } | |
4324 | } | |
ded42b9f | 4325 | if (stype == SVt_PVLV) |
6fc92669 | 4326 | (void)SvUPGRADE(dstr, SVt_PVNV); |
ded42b9f | 4327 | else |
eb160463 | 4328 | (void)SvUPGRADE(dstr, (U32)stype); |
79072805 LW |
4329 | } |
4330 | ||
8990e307 LW |
4331 | sflags = SvFLAGS(sstr); |
4332 | ||
4333 | if (sflags & SVf_ROK) { | |
4334 | if (dtype >= SVt_PV) { | |
4335 | if (dtype == SVt_PVGV) { | |
4336 | SV *sref = SvREFCNT_inc(SvRV(sstr)); | |
4337 | SV *dref = 0; | |
a5f75d66 | 4338 | int intro = GvINTRO(dstr); |
a0d0e21e | 4339 | |
7fb37951 AMS |
4340 | #ifdef GV_UNIQUE_CHECK |
4341 | if (GvUNIQUE((GV*)dstr)) { | |
5bd07a3d DM |
4342 | Perl_croak(aTHX_ PL_no_modify); |
4343 | } | |
4344 | #endif | |
4345 | ||
a0d0e21e | 4346 | if (intro) { |
a5f75d66 | 4347 | GvINTRO_off(dstr); /* one-shot flag */ |
1d7c1841 | 4348 | GvLINE(dstr) = CopLINE(PL_curcop); |
1edc1566 | 4349 | GvEGV(dstr) = (GV*)dstr; |
a0d0e21e | 4350 | } |
a5f75d66 | 4351 | GvMULTI_on(dstr); |
8990e307 LW |
4352 | switch (SvTYPE(sref)) { |
4353 | case SVt_PVAV: | |
a0d0e21e | 4354 | if (intro) |
890ed176 | 4355 | SAVEGENERICSV(GvAV(dstr)); |
a0d0e21e LW |
4356 | else |
4357 | dref = (SV*)GvAV(dstr); | |
8990e307 | 4358 | GvAV(dstr) = (AV*)sref; |
39bac7f7 | 4359 | if (!GvIMPORTED_AV(dstr) |
1d7c1841 GS |
4360 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
4361 | { | |
a5f75d66 | 4362 | GvIMPORTED_AV_on(dstr); |
1d7c1841 | 4363 | } |
8990e307 LW |
4364 | break; |
4365 | case SVt_PVHV: | |
a0d0e21e | 4366 | if (intro) |
890ed176 | 4367 | SAVEGENERICSV(GvHV(dstr)); |
a0d0e21e LW |
4368 | else |
4369 | dref = (SV*)GvHV(dstr); | |
8990e307 | 4370 | GvHV(dstr) = (HV*)sref; |
39bac7f7 | 4371 | if (!GvIMPORTED_HV(dstr) |
1d7c1841 GS |
4372 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
4373 | { | |
a5f75d66 | 4374 | GvIMPORTED_HV_on(dstr); |
1d7c1841 | 4375 | } |
8990e307 LW |
4376 | break; |
4377 | case SVt_PVCV: | |
8ebc5c01 | 4378 | if (intro) { |
4379 | if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) { | |
4380 | SvREFCNT_dec(GvCV(dstr)); | |
4381 | GvCV(dstr) = Nullcv; | |
68dc0745 | 4382 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
3280af22 | 4383 | PL_sub_generation++; |
8ebc5c01 | 4384 | } |
890ed176 | 4385 | SAVEGENERICSV(GvCV(dstr)); |
8ebc5c01 | 4386 | } |
68dc0745 | 4387 | else |
4388 | dref = (SV*)GvCV(dstr); | |
4389 | if (GvCV(dstr) != (CV*)sref) { | |
748a9306 | 4390 | CV* cv = GvCV(dstr); |
4633a7c4 | 4391 | if (cv) { |
68dc0745 | 4392 | if (!GvCVGEN((GV*)dstr) && |
4393 | (CvROOT(cv) || CvXSUB(cv))) | |
4394 | { | |
7bac28a0 | 4395 | /* ahem, death to those who redefine |
4396 | * active sort subs */ | |
3280af22 NIS |
4397 | if (PL_curstackinfo->si_type == PERLSI_SORT && |
4398 | PL_sortcop == CvSTART(cv)) | |
1c846c1f | 4399 | Perl_croak(aTHX_ |
7bac28a0 | 4400 | "Can't redefine active sort subroutine %s", |
4401 | GvENAME((GV*)dstr)); | |
beab0874 JT |
4402 | /* Redefining a sub - warning is mandatory if |
4403 | it was a const and its value changed. */ | |
4404 | if (ckWARN(WARN_REDEFINE) | |
4405 | || (CvCONST(cv) | |
4406 | && (!CvCONST((CV*)sref) | |
4407 | || sv_cmp(cv_const_sv(cv), | |
4408 | cv_const_sv((CV*)sref))))) | |
4409 | { | |
9014280d | 4410 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
beab0874 | 4411 | CvCONST(cv) |
910764e6 RGS |
4412 | ? "Constant subroutine %s::%s redefined" |
4413 | : "Subroutine %s::%s redefined", | |
4414 | HvNAME(GvSTASH((GV*)dstr)), | |
beab0874 JT |
4415 | GvENAME((GV*)dstr)); |
4416 | } | |
9607fc9c | 4417 | } |
fb24441d RGS |
4418 | if (!intro) |
4419 | cv_ckproto(cv, (GV*)dstr, | |
4420 | SvPOK(sref) ? SvPVX(sref) : Nullch); | |
4633a7c4 | 4421 | } |
a5f75d66 | 4422 | GvCV(dstr) = (CV*)sref; |
7a4c00b4 | 4423 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
a5f75d66 | 4424 | GvASSUMECV_on(dstr); |
3280af22 | 4425 | PL_sub_generation++; |
a5f75d66 | 4426 | } |
39bac7f7 | 4427 | if (!GvIMPORTED_CV(dstr) |
1d7c1841 GS |
4428 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
4429 | { | |
a5f75d66 | 4430 | GvIMPORTED_CV_on(dstr); |
1d7c1841 | 4431 | } |
8990e307 | 4432 | break; |
91bba347 LW |
4433 | case SVt_PVIO: |
4434 | if (intro) | |
890ed176 | 4435 | SAVEGENERICSV(GvIOp(dstr)); |
91bba347 LW |
4436 | else |
4437 | dref = (SV*)GvIOp(dstr); | |
4438 | GvIOp(dstr) = (IO*)sref; | |
4439 | break; | |
f4d13ee9 JH |
4440 | case SVt_PVFM: |
4441 | if (intro) | |
890ed176 | 4442 | SAVEGENERICSV(GvFORM(dstr)); |
f4d13ee9 JH |
4443 | else |
4444 | dref = (SV*)GvFORM(dstr); | |
4445 | GvFORM(dstr) = (CV*)sref; | |
4446 | break; | |
8990e307 | 4447 | default: |
a0d0e21e | 4448 | if (intro) |
890ed176 | 4449 | SAVEGENERICSV(GvSV(dstr)); |
a0d0e21e LW |
4450 | else |
4451 | dref = (SV*)GvSV(dstr); | |
8990e307 | 4452 | GvSV(dstr) = sref; |
39bac7f7 | 4453 | if (!GvIMPORTED_SV(dstr) |
1d7c1841 GS |
4454 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
4455 | { | |
a5f75d66 | 4456 | GvIMPORTED_SV_on(dstr); |
1d7c1841 | 4457 | } |
8990e307 LW |
4458 | break; |
4459 | } | |
4460 | if (dref) | |
4461 | SvREFCNT_dec(dref); | |
27c9684d AP |
4462 | if (SvTAINTED(sstr)) |
4463 | SvTAINT(dstr); | |
8990e307 LW |
4464 | return; |
4465 | } | |
a0d0e21e | 4466 | if (SvPVX(dstr)) { |
760ac839 | 4467 | (void)SvOOK_off(dstr); /* backoff */ |
50483b2c JD |
4468 | if (SvLEN(dstr)) |
4469 | Safefree(SvPVX(dstr)); | |
a0d0e21e LW |
4470 | SvLEN(dstr)=SvCUR(dstr)=0; |
4471 | } | |
8990e307 | 4472 | } |
a0d0e21e | 4473 | (void)SvOK_off(dstr); |
8990e307 | 4474 | SvRV(dstr) = SvREFCNT_inc(SvRV(sstr)); |
ed6116ce | 4475 | SvROK_on(dstr); |
8990e307 | 4476 | if (sflags & SVp_NOK) { |
3332b3c1 JH |
4477 | SvNOKp_on(dstr); |
4478 | /* Only set the public OK flag if the source has public OK. */ | |
4479 | if (sflags & SVf_NOK) | |
4480 | SvFLAGS(dstr) |= SVf_NOK; | |
ed6116ce LW |
4481 | SvNVX(dstr) = SvNVX(sstr); |
4482 | } | |
8990e307 | 4483 | if (sflags & SVp_IOK) { |
3332b3c1 JH |
4484 | (void)SvIOKp_on(dstr); |
4485 | if (sflags & SVf_IOK) | |
4486 | SvFLAGS(dstr) |= SVf_IOK; | |
2b1c7e3e | 4487 | if (sflags & SVf_IVisUV) |
25da4f38 | 4488 | SvIsUV_on(dstr); |
3332b3c1 | 4489 | SvIVX(dstr) = SvIVX(sstr); |
ed6116ce | 4490 | } |
a0d0e21e LW |
4491 | if (SvAMAGIC(sstr)) { |
4492 | SvAMAGIC_on(dstr); | |
4493 | } | |
ed6116ce | 4494 | } |
8990e307 | 4495 | else if (sflags & SVp_POK) { |
765f542d | 4496 | bool isSwipe = 0; |
79072805 LW |
4497 | |
4498 | /* | |
4499 | * Check to see if we can just swipe the string. If so, it's a | |
4500 | * possible small lose on short strings, but a big win on long ones. | |
463ee0b2 LW |
4501 | * It might even be a win on short strings if SvPVX(dstr) |
4502 | * has to be allocated and SvPVX(sstr) has to be freed. | |
79072805 LW |
4503 | */ |
4504 | ||
120fac95 NC |
4505 | /* Whichever path we take through the next code, we want this true, |
4506 | and doing it now facilitates the COW check. */ | |
4507 | (void)SvPOK_only(dstr); | |
4508 | ||
765f542d NC |
4509 | if ( |
4510 | #ifdef PERL_COPY_ON_WRITE | |
4511 | (sflags & (SVf_FAKE | SVf_READONLY)) != (SVf_FAKE | SVf_READONLY) | |
4512 | && | |
4513 | #endif | |
4514 | !(isSwipe = | |
4515 | (sflags & SVs_TEMP) && /* slated for free anyway? */ | |
4516 | !(sflags & SVf_OOK) && /* and not involved in OOK hack? */ | |
4517 | SvREFCNT(sstr) == 1 && /* and no other references to it? */ | |
4518 | SvLEN(sstr) && /* and really is a string */ | |
645c22ef | 4519 | /* and won't be needed again, potentially */ |
765f542d NC |
4520 | !(PL_op && PL_op->op_type == OP_AASSIGN)) |
4521 | #ifdef PERL_COPY_ON_WRITE | |
4522 | && !((sflags & CAN_COW_MASK) == CAN_COW_FLAGS | |
120fac95 | 4523 | && (SvFLAGS(dstr) & CAN_COW_MASK) == CAN_COW_FLAGS |
765f542d NC |
4524 | && SvTYPE(sstr) >= SVt_PVIV) |
4525 | #endif | |
4526 | ) { | |
4527 | /* Failed the swipe test, and it's not a shared hash key either. | |
4528 | Have to copy the string. */ | |
4529 | STRLEN len = SvCUR(sstr); | |
4530 | SvGROW(dstr, len + 1); /* inlined from sv_setpvn */ | |
4531 | Move(SvPVX(sstr),SvPVX(dstr),len,char); | |
4532 | SvCUR_set(dstr, len); | |
4533 | *SvEND(dstr) = '\0'; | |
765f542d NC |
4534 | } else { |
4535 | /* If PERL_COPY_ON_WRITE is not defined, then isSwipe will always | |
4536 | be true in here. */ | |
4537 | #ifdef PERL_COPY_ON_WRITE | |
4538 | /* Either it's a shared hash key, or it's suitable for | |
4539 | copy-on-write or we can swipe the string. */ | |
46187eeb | 4540 | if (DEBUG_C_TEST) { |
ed252734 | 4541 | PerlIO_printf(Perl_debug_log, "Copy on write: sstr --> dstr\n"); |
e419cbc5 NC |
4542 | sv_dump(sstr); |
4543 | sv_dump(dstr); | |
46187eeb | 4544 | } |
765f542d NC |
4545 | if (!isSwipe) { |
4546 | /* I believe I should acquire a global SV mutex if | |
4547 | it's a COW sv (not a shared hash key) to stop | |
4548 | it going un copy-on-write. | |
4549 | If the source SV has gone un copy on write between up there | |
4550 | and down here, then (assert() that) it is of the correct | |
4551 | form to make it copy on write again */ | |
4552 | if ((sflags & (SVf_FAKE | SVf_READONLY)) | |
4553 | != (SVf_FAKE | SVf_READONLY)) { | |
4554 | SvREADONLY_on(sstr); | |
4555 | SvFAKE_on(sstr); | |
4556 | /* Make the source SV into a loop of 1. | |
4557 | (about to become 2) */ | |
a29f6d03 | 4558 | SV_COW_NEXT_SV_SET(sstr, sstr); |
765f542d NC |
4559 | } |
4560 | } | |
4561 | #endif | |
4562 | /* Initial code is common. */ | |
adbc6bb1 | 4563 | if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */ |
a5f75d66 AD |
4564 | if (SvOOK(dstr)) { |
4565 | SvFLAGS(dstr) &= ~SVf_OOK; | |
4566 | Safefree(SvPVX(dstr) - SvIVX(dstr)); | |
4567 | } | |
50483b2c | 4568 | else if (SvLEN(dstr)) |
a5f75d66 | 4569 | Safefree(SvPVX(dstr)); |
79072805 | 4570 | } |
765f542d NC |
4571 | |
4572 | #ifdef PERL_COPY_ON_WRITE | |
4573 | if (!isSwipe) { | |
4574 | /* making another shared SV. */ | |
4575 | STRLEN cur = SvCUR(sstr); | |
4576 | STRLEN len = SvLEN(sstr); | |
d89fc664 | 4577 | assert (SvTYPE(dstr) >= SVt_PVIV); |
765f542d NC |
4578 | if (len) { |
4579 | /* SvIsCOW_normal */ | |
4580 | /* splice us in between source and next-after-source. */ | |
a29f6d03 NC |
4581 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); |
4582 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
765f542d NC |
4583 | SvPV_set(dstr, SvPVX(sstr)); |
4584 | } else { | |
4585 | /* SvIsCOW_shared_hash */ | |
4586 | UV hash = SvUVX(sstr); | |
46187eeb NC |
4587 | DEBUG_C(PerlIO_printf(Perl_debug_log, |
4588 | "Copy on write: Sharing hash\n")); | |
765f542d NC |
4589 | SvPV_set(dstr, |
4590 | sharepvn(SvPVX(sstr), | |
4591 | (sflags & SVf_UTF8?-cur:cur), hash)); | |
4592 | SvUVX(dstr) = hash; | |
4593 | } | |
4594 | SvLEN(dstr) = len; | |
4595 | SvCUR(dstr) = cur; | |
4596 | SvREADONLY_on(dstr); | |
4597 | SvFAKE_on(dstr); | |
4598 | /* Relesase a global SV mutex. */ | |
4599 | } | |
4600 | else | |
4601 | #endif | |
4602 | { /* Passes the swipe test. */ | |
4603 | SvPV_set(dstr, SvPVX(sstr)); | |
4604 | SvLEN_set(dstr, SvLEN(sstr)); | |
4605 | SvCUR_set(dstr, SvCUR(sstr)); | |
4606 | ||
4607 | SvTEMP_off(dstr); | |
4608 | (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */ | |
4609 | SvPV_set(sstr, Nullch); | |
4610 | SvLEN_set(sstr, 0); | |
4611 | SvCUR_set(sstr, 0); | |
4612 | SvTEMP_off(sstr); | |
4613 | } | |
4614 | } | |
9aa983d2 | 4615 | if (sflags & SVf_UTF8) |
a7cb1f99 | 4616 | SvUTF8_on(dstr); |
79072805 | 4617 | /*SUPPRESS 560*/ |
8990e307 | 4618 | if (sflags & SVp_NOK) { |
3332b3c1 JH |
4619 | SvNOKp_on(dstr); |
4620 | if (sflags & SVf_NOK) | |
4621 | SvFLAGS(dstr) |= SVf_NOK; | |
463ee0b2 | 4622 | SvNVX(dstr) = SvNVX(sstr); |
79072805 | 4623 | } |
8990e307 | 4624 | if (sflags & SVp_IOK) { |
3332b3c1 JH |
4625 | (void)SvIOKp_on(dstr); |
4626 | if (sflags & SVf_IOK) | |
4627 | SvFLAGS(dstr) |= SVf_IOK; | |
2b1c7e3e | 4628 | if (sflags & SVf_IVisUV) |
25da4f38 | 4629 | SvIsUV_on(dstr); |
463ee0b2 | 4630 | SvIVX(dstr) = SvIVX(sstr); |
79072805 | 4631 | } |
92f0c265 | 4632 | if (SvVOK(sstr)) { |
7a5fa8a2 | 4633 | MAGIC *smg = mg_find(sstr,PERL_MAGIC_vstring); |
ece467f9 JP |
4634 | sv_magic(dstr, NULL, PERL_MAGIC_vstring, |
4635 | smg->mg_ptr, smg->mg_len); | |
439cb1c4 | 4636 | SvRMAGICAL_on(dstr); |
7a5fa8a2 | 4637 | } |
79072805 | 4638 | } |
8990e307 | 4639 | else if (sflags & SVp_IOK) { |
3332b3c1 JH |
4640 | if (sflags & SVf_IOK) |
4641 | (void)SvIOK_only(dstr); | |
4642 | else { | |
9cbac4c7 DM |
4643 | (void)SvOK_off(dstr); |
4644 | (void)SvIOKp_on(dstr); | |
3332b3c1 JH |
4645 | } |
4646 | /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */ | |
2b1c7e3e | 4647 | if (sflags & SVf_IVisUV) |
25da4f38 | 4648 | SvIsUV_on(dstr); |
3332b3c1 JH |
4649 | SvIVX(dstr) = SvIVX(sstr); |
4650 | if (sflags & SVp_NOK) { | |
4651 | if (sflags & SVf_NOK) | |
4652 | (void)SvNOK_on(dstr); | |
4653 | else | |
4654 | (void)SvNOKp_on(dstr); | |
4655 | SvNVX(dstr) = SvNVX(sstr); | |
4656 | } | |
4657 | } | |
4658 | else if (sflags & SVp_NOK) { | |
4659 | if (sflags & SVf_NOK) | |
4660 | (void)SvNOK_only(dstr); | |
4661 | else { | |
9cbac4c7 | 4662 | (void)SvOK_off(dstr); |
3332b3c1 JH |
4663 | SvNOKp_on(dstr); |
4664 | } | |
4665 | SvNVX(dstr) = SvNVX(sstr); | |
79072805 LW |
4666 | } |
4667 | else { | |
20408e3c | 4668 | if (dtype == SVt_PVGV) { |
e476b1b5 | 4669 | if (ckWARN(WARN_MISC)) |
9014280d | 4670 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Undefined value assigned to typeglob"); |
20408e3c GS |
4671 | } |
4672 | else | |
4673 | (void)SvOK_off(dstr); | |
a0d0e21e | 4674 | } |
27c9684d AP |
4675 | if (SvTAINTED(sstr)) |
4676 | SvTAINT(dstr); | |
79072805 LW |
4677 | } |
4678 | ||
954c1994 GS |
4679 | /* |
4680 | =for apidoc sv_setsv_mg | |
4681 | ||
4682 | Like C<sv_setsv>, but also handles 'set' magic. | |
4683 | ||
4684 | =cut | |
4685 | */ | |
4686 | ||
79072805 | 4687 | void |
864dbfa3 | 4688 | Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr) |
ef50df4b GS |
4689 | { |
4690 | sv_setsv(dstr,sstr); | |
4691 | SvSETMAGIC(dstr); | |
4692 | } | |
4693 | ||
ed252734 NC |
4694 | #ifdef PERL_COPY_ON_WRITE |
4695 | SV * | |
4696 | Perl_sv_setsv_cow(pTHX_ SV *dstr, SV *sstr) | |
4697 | { | |
4698 | STRLEN cur = SvCUR(sstr); | |
4699 | STRLEN len = SvLEN(sstr); | |
4700 | register char *new_pv; | |
4701 | ||
4702 | if (DEBUG_C_TEST) { | |
4703 | PerlIO_printf(Perl_debug_log, "Fast copy on write: %p -> %p\n", | |
4704 | sstr, dstr); | |
4705 | sv_dump(sstr); | |
4706 | if (dstr) | |
4707 | sv_dump(dstr); | |
4708 | } | |
4709 | ||
4710 | if (dstr) { | |
4711 | if (SvTHINKFIRST(dstr)) | |
4712 | sv_force_normal_flags(dstr, SV_COW_DROP_PV); | |
4713 | else if (SvPVX(dstr)) | |
4714 | Safefree(SvPVX(dstr)); | |
4715 | } | |
4716 | else | |
4717 | new_SV(dstr); | |
b988aa42 | 4718 | (void)SvUPGRADE (dstr, SVt_PVIV); |
ed252734 NC |
4719 | |
4720 | assert (SvPOK(sstr)); | |
4721 | assert (SvPOKp(sstr)); | |
4722 | assert (!SvIOK(sstr)); | |
4723 | assert (!SvIOKp(sstr)); | |
4724 | assert (!SvNOK(sstr)); | |
4725 | assert (!SvNOKp(sstr)); | |
4726 | ||
4727 | if (SvIsCOW(sstr)) { | |
4728 | ||
4729 | if (SvLEN(sstr) == 0) { | |
4730 | /* source is a COW shared hash key. */ | |
4731 | UV hash = SvUVX(sstr); | |
4732 | DEBUG_C(PerlIO_printf(Perl_debug_log, | |
4733 | "Fast copy on write: Sharing hash\n")); | |
4734 | SvUVX(dstr) = hash; | |
4735 | new_pv = sharepvn(SvPVX(sstr), (SvUTF8(sstr)?-cur:cur), hash); | |
4736 | goto common_exit; | |
4737 | } | |
4738 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); | |
4739 | } else { | |
4740 | assert ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS); | |
b988aa42 | 4741 | (void)SvUPGRADE (sstr, SVt_PVIV); |
ed252734 NC |
4742 | SvREADONLY_on(sstr); |
4743 | SvFAKE_on(sstr); | |
4744 | DEBUG_C(PerlIO_printf(Perl_debug_log, | |
4745 | "Fast copy on write: Converting sstr to COW\n")); | |
4746 | SV_COW_NEXT_SV_SET(dstr, sstr); | |
4747 | } | |
4748 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
4749 | new_pv = SvPVX(sstr); | |
4750 | ||
4751 | common_exit: | |
4752 | SvPV_set(dstr, new_pv); | |
4753 | SvFLAGS(dstr) = (SVt_PVIV|SVf_POK|SVp_POK|SVf_FAKE|SVf_READONLY); | |
4754 | if (SvUTF8(sstr)) | |
4755 | SvUTF8_on(dstr); | |
4756 | SvLEN(dstr) = len; | |
4757 | SvCUR(dstr) = cur; | |
4758 | if (DEBUG_C_TEST) { | |
4759 | sv_dump(dstr); | |
4760 | } | |
4761 | return dstr; | |
4762 | } | |
4763 | #endif | |
4764 | ||
954c1994 GS |
4765 | /* |
4766 | =for apidoc sv_setpvn | |
4767 | ||
4768 | Copies a string into an SV. The C<len> parameter indicates the number of | |
9e09f5f2 MHM |
4769 | bytes to be copied. If the C<ptr> argument is NULL the SV will become |
4770 | undefined. Does not handle 'set' magic. See C<sv_setpvn_mg>. | |
954c1994 GS |
4771 | |
4772 | =cut | |
4773 | */ | |
4774 | ||
ef50df4b | 4775 | void |
864dbfa3 | 4776 | Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
79072805 | 4777 | { |
c6f8c383 | 4778 | register char *dptr; |
22c522df | 4779 | |
765f542d | 4780 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 4781 | if (!ptr) { |
a0d0e21e | 4782 | (void)SvOK_off(sv); |
463ee0b2 LW |
4783 | return; |
4784 | } | |
22c522df JH |
4785 | else { |
4786 | /* len is STRLEN which is unsigned, need to copy to signed */ | |
4787 | IV iv = len; | |
9c5ffd7c JH |
4788 | if (iv < 0) |
4789 | Perl_croak(aTHX_ "panic: sv_setpvn called with negative strlen"); | |
22c522df | 4790 | } |
6fc92669 | 4791 | (void)SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 4792 | |
79072805 | 4793 | SvGROW(sv, len + 1); |
c6f8c383 GA |
4794 | dptr = SvPVX(sv); |
4795 | Move(ptr,dptr,len,char); | |
4796 | dptr[len] = '\0'; | |
79072805 | 4797 | SvCUR_set(sv, len); |
1aa99e6b | 4798 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4799 | SvTAINT(sv); |
79072805 LW |
4800 | } |
4801 | ||
954c1994 GS |
4802 | /* |
4803 | =for apidoc sv_setpvn_mg | |
4804 | ||
4805 | Like C<sv_setpvn>, but also handles 'set' magic. | |
4806 | ||
4807 | =cut | |
4808 | */ | |
4809 | ||
79072805 | 4810 | void |
864dbfa3 | 4811 | Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
ef50df4b GS |
4812 | { |
4813 | sv_setpvn(sv,ptr,len); | |
4814 | SvSETMAGIC(sv); | |
4815 | } | |
4816 | ||
954c1994 GS |
4817 | /* |
4818 | =for apidoc sv_setpv | |
4819 | ||
4820 | Copies a string into an SV. The string must be null-terminated. Does not | |
4821 | handle 'set' magic. See C<sv_setpv_mg>. | |
4822 | ||
4823 | =cut | |
4824 | */ | |
4825 | ||
ef50df4b | 4826 | void |
864dbfa3 | 4827 | Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
4828 | { |
4829 | register STRLEN len; | |
4830 | ||
765f542d | 4831 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 4832 | if (!ptr) { |
a0d0e21e | 4833 | (void)SvOK_off(sv); |
463ee0b2 LW |
4834 | return; |
4835 | } | |
79072805 | 4836 | len = strlen(ptr); |
6fc92669 | 4837 | (void)SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 4838 | |
79072805 | 4839 | SvGROW(sv, len + 1); |
463ee0b2 | 4840 | Move(ptr,SvPVX(sv),len+1,char); |
79072805 | 4841 | SvCUR_set(sv, len); |
1aa99e6b | 4842 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 LW |
4843 | SvTAINT(sv); |
4844 | } | |
4845 | ||
954c1994 GS |
4846 | /* |
4847 | =for apidoc sv_setpv_mg | |
4848 | ||
4849 | Like C<sv_setpv>, but also handles 'set' magic. | |
4850 | ||
4851 | =cut | |
4852 | */ | |
4853 | ||
463ee0b2 | 4854 | void |
864dbfa3 | 4855 | Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b GS |
4856 | { |
4857 | sv_setpv(sv,ptr); | |
4858 | SvSETMAGIC(sv); | |
4859 | } | |
4860 | ||
954c1994 GS |
4861 | /* |
4862 | =for apidoc sv_usepvn | |
4863 | ||
4864 | Tells an SV to use C<ptr> to find its string value. Normally the string is | |
1c846c1f | 4865 | stored inside the SV but sv_usepvn allows the SV to use an outside string. |
954c1994 GS |
4866 | The C<ptr> should point to memory that was allocated by C<malloc>. The |
4867 | string length, C<len>, must be supplied. This function will realloc the | |
4868 | memory pointed to by C<ptr>, so that pointer should not be freed or used by | |
4869 | the programmer after giving it to sv_usepvn. Does not handle 'set' magic. | |
4870 | See C<sv_usepvn_mg>. | |
4871 | ||
4872 | =cut | |
4873 | */ | |
4874 | ||
ef50df4b | 4875 | void |
864dbfa3 | 4876 | Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len) |
463ee0b2 | 4877 | { |
765f542d | 4878 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
c6f8c383 | 4879 | (void)SvUPGRADE(sv, SVt_PV); |
463ee0b2 | 4880 | if (!ptr) { |
a0d0e21e | 4881 | (void)SvOK_off(sv); |
463ee0b2 LW |
4882 | return; |
4883 | } | |
a0ed51b3 | 4884 | (void)SvOOK_off(sv); |
50483b2c | 4885 | if (SvPVX(sv) && SvLEN(sv)) |
463ee0b2 LW |
4886 | Safefree(SvPVX(sv)); |
4887 | Renew(ptr, len+1, char); | |
4888 | SvPVX(sv) = ptr; | |
4889 | SvCUR_set(sv, len); | |
4890 | SvLEN_set(sv, len+1); | |
4891 | *SvEND(sv) = '\0'; | |
1aa99e6b | 4892 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4893 | SvTAINT(sv); |
79072805 LW |
4894 | } |
4895 | ||
954c1994 GS |
4896 | /* |
4897 | =for apidoc sv_usepvn_mg | |
4898 | ||
4899 | Like C<sv_usepvn>, but also handles 'set' magic. | |
4900 | ||
4901 | =cut | |
4902 | */ | |
4903 | ||
ef50df4b | 4904 | void |
864dbfa3 | 4905 | Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len) |
ef50df4b | 4906 | { |
51c1089b | 4907 | sv_usepvn(sv,ptr,len); |
ef50df4b GS |
4908 | SvSETMAGIC(sv); |
4909 | } | |
4910 | ||
765f542d NC |
4911 | #ifdef PERL_COPY_ON_WRITE |
4912 | /* Need to do this *after* making the SV normal, as we need the buffer | |
4913 | pointer to remain valid until after we've copied it. If we let go too early, | |
4914 | another thread could invalidate it by unsharing last of the same hash key | |
4915 | (which it can do by means other than releasing copy-on-write Svs) | |
4916 | or by changing the other copy-on-write SVs in the loop. */ | |
4917 | STATIC void | |
4918 | S_sv_release_COW(pTHX_ register SV *sv, char *pvx, STRLEN cur, STRLEN len, | |
4919 | U32 hash, SV *after) | |
4920 | { | |
4921 | if (len) { /* this SV was SvIsCOW_normal(sv) */ | |
4922 | /* we need to find the SV pointing to us. */ | |
4923 | SV *current = SV_COW_NEXT_SV(after); | |
7a5fa8a2 | 4924 | |
765f542d NC |
4925 | if (current == sv) { |
4926 | /* The SV we point to points back to us (there were only two of us | |
4927 | in the loop.) | |
4928 | Hence other SV is no longer copy on write either. */ | |
4929 | SvFAKE_off(after); | |
4930 | SvREADONLY_off(after); | |
4931 | } else { | |
4932 | /* We need to follow the pointers around the loop. */ | |
4933 | SV *next; | |
4934 | while ((next = SV_COW_NEXT_SV(current)) != sv) { | |
4935 | assert (next); | |
4936 | current = next; | |
4937 | /* don't loop forever if the structure is bust, and we have | |
4938 | a pointer into a closed loop. */ | |
4939 | assert (current != after); | |
e419cbc5 | 4940 | assert (SvPVX(current) == pvx); |
765f542d NC |
4941 | } |
4942 | /* Make the SV before us point to the SV after us. */ | |
a29f6d03 | 4943 | SV_COW_NEXT_SV_SET(current, after); |
765f542d NC |
4944 | } |
4945 | } else { | |
4946 | unsharepvn(pvx, SvUTF8(sv) ? -(I32)cur : cur, hash); | |
4947 | } | |
4948 | } | |
4949 | ||
4950 | int | |
4951 | Perl_sv_release_IVX(pTHX_ register SV *sv) | |
4952 | { | |
4953 | if (SvIsCOW(sv)) | |
4954 | sv_force_normal_flags(sv, 0); | |
4955 | return SvOOK_off(sv); | |
4956 | } | |
4957 | #endif | |
645c22ef DM |
4958 | /* |
4959 | =for apidoc sv_force_normal_flags | |
4960 | ||
4961 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
4962 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
765f542d NC |
4963 | an xpvmg; if we're a copy-on-write scalar, this is the on-write time when |
4964 | we do the copy, and is also used locally. If C<SV_COW_DROP_PV> is set | |
4965 | then a copy-on-write scalar drops its PV buffer (if any) and becomes | |
4966 | SvPOK_off rather than making a copy. (Used where this scalar is about to be | |
d3050d9d | 4967 | set to some other value.) In addition, the C<flags> parameter gets passed to |
765f542d NC |
4968 | C<sv_unref_flags()> when unrefing. C<sv_force_normal> calls this function |
4969 | with flags set to 0. | |
645c22ef DM |
4970 | |
4971 | =cut | |
4972 | */ | |
4973 | ||
6fc92669 | 4974 | void |
840a7b70 | 4975 | Perl_sv_force_normal_flags(pTHX_ register SV *sv, U32 flags) |
0f15f207 | 4976 | { |
765f542d NC |
4977 | #ifdef PERL_COPY_ON_WRITE |
4978 | if (SvREADONLY(sv)) { | |
4979 | /* At this point I believe I should acquire a global SV mutex. */ | |
4980 | if (SvFAKE(sv)) { | |
4981 | char *pvx = SvPVX(sv); | |
4982 | STRLEN len = SvLEN(sv); | |
4983 | STRLEN cur = SvCUR(sv); | |
4984 | U32 hash = SvUVX(sv); | |
4985 | SV *next = SV_COW_NEXT_SV(sv); /* next COW sv in the loop. */ | |
46187eeb NC |
4986 | if (DEBUG_C_TEST) { |
4987 | PerlIO_printf(Perl_debug_log, | |
4988 | "Copy on write: Force normal %ld\n", | |
4989 | (long) flags); | |
e419cbc5 | 4990 | sv_dump(sv); |
46187eeb | 4991 | } |
765f542d NC |
4992 | SvFAKE_off(sv); |
4993 | SvREADONLY_off(sv); | |
4994 | /* This SV doesn't own the buffer, so need to New() a new one: */ | |
4995 | SvPVX(sv) = 0; | |
4996 | SvLEN(sv) = 0; | |
4997 | if (flags & SV_COW_DROP_PV) { | |
4998 | /* OK, so we don't need to copy our buffer. */ | |
4999 | SvPOK_off(sv); | |
5000 | } else { | |
5001 | SvGROW(sv, cur + 1); | |
5002 | Move(pvx,SvPVX(sv),cur,char); | |
5003 | SvCUR(sv) = cur; | |
5004 | *SvEND(sv) = '\0'; | |
5005 | } | |
e419cbc5 | 5006 | sv_release_COW(sv, pvx, cur, len, hash, next); |
46187eeb | 5007 | if (DEBUG_C_TEST) { |
e419cbc5 | 5008 | sv_dump(sv); |
46187eeb | 5009 | } |
765f542d | 5010 | } |
923e4eb5 | 5011 | else if (IN_PERL_RUNTIME) |
765f542d NC |
5012 | Perl_croak(aTHX_ PL_no_modify); |
5013 | /* At this point I believe that I can drop the global SV mutex. */ | |
5014 | } | |
5015 | #else | |
2213622d | 5016 | if (SvREADONLY(sv)) { |
1c846c1f NIS |
5017 | if (SvFAKE(sv)) { |
5018 | char *pvx = SvPVX(sv); | |
5c98da1c | 5019 | int is_utf8 = SvUTF8(sv); |
1c846c1f NIS |
5020 | STRLEN len = SvCUR(sv); |
5021 | U32 hash = SvUVX(sv); | |
10bcdfd6 NC |
5022 | SvFAKE_off(sv); |
5023 | SvREADONLY_off(sv); | |
5c98da1c NC |
5024 | SvPVX(sv) = 0; |
5025 | SvLEN(sv) = 0; | |
1c846c1f NIS |
5026 | SvGROW(sv, len + 1); |
5027 | Move(pvx,SvPVX(sv),len,char); | |
5028 | *SvEND(sv) = '\0'; | |
5c98da1c | 5029 | unsharepvn(pvx, is_utf8 ? -(I32)len : len, hash); |
1c846c1f | 5030 | } |
923e4eb5 | 5031 | else if (IN_PERL_RUNTIME) |
cea2e8a9 | 5032 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 5033 | } |
765f542d | 5034 | #endif |
2213622d | 5035 | if (SvROK(sv)) |
840a7b70 | 5036 | sv_unref_flags(sv, flags); |
6fc92669 GS |
5037 | else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) |
5038 | sv_unglob(sv); | |
0f15f207 | 5039 | } |
1c846c1f | 5040 | |
645c22ef DM |
5041 | /* |
5042 | =for apidoc sv_force_normal | |
5043 | ||
5044 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
5045 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
5046 | an xpvmg. See also C<sv_force_normal_flags>. | |
5047 | ||
5048 | =cut | |
5049 | */ | |
5050 | ||
840a7b70 IZ |
5051 | void |
5052 | Perl_sv_force_normal(pTHX_ register SV *sv) | |
5053 | { | |
5054 | sv_force_normal_flags(sv, 0); | |
5055 | } | |
5056 | ||
954c1994 GS |
5057 | /* |
5058 | =for apidoc sv_chop | |
5059 | ||
1c846c1f | 5060 | Efficient removal of characters from the beginning of the string buffer. |
954c1994 GS |
5061 | SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside |
5062 | the string buffer. The C<ptr> becomes the first character of the adjusted | |
645c22ef | 5063 | string. Uses the "OOK hack". |
31869a79 AE |
5064 | Beware: after this function returns, C<ptr> and SvPVX(sv) may no longer |
5065 | refer to the same chunk of data. | |
954c1994 GS |
5066 | |
5067 | =cut | |
5068 | */ | |
5069 | ||
79072805 | 5070 | void |
645c22ef | 5071 | Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) |
79072805 LW |
5072 | { |
5073 | register STRLEN delta; | |
a0d0e21e | 5074 | if (!ptr || !SvPOKp(sv)) |
79072805 | 5075 | return; |
31869a79 | 5076 | delta = ptr - SvPVX(sv); |
2213622d | 5077 | SV_CHECK_THINKFIRST(sv); |
79072805 LW |
5078 | if (SvTYPE(sv) < SVt_PVIV) |
5079 | sv_upgrade(sv,SVt_PVIV); | |
5080 | ||
5081 | if (!SvOOK(sv)) { | |
50483b2c JD |
5082 | if (!SvLEN(sv)) { /* make copy of shared string */ |
5083 | char *pvx = SvPVX(sv); | |
5084 | STRLEN len = SvCUR(sv); | |
5085 | SvGROW(sv, len + 1); | |
5086 | Move(pvx,SvPVX(sv),len,char); | |
5087 | *SvEND(sv) = '\0'; | |
5088 | } | |
463ee0b2 | 5089 | SvIVX(sv) = 0; |
a4bfb290 AB |
5090 | /* Same SvOOK_on but SvOOK_on does a SvIOK_off |
5091 | and we do that anyway inside the SvNIOK_off | |
5092 | */ | |
7a5fa8a2 | 5093 | SvFLAGS(sv) |= SVf_OOK; |
79072805 | 5094 | } |
a4bfb290 | 5095 | SvNIOK_off(sv); |
79072805 LW |
5096 | SvLEN(sv) -= delta; |
5097 | SvCUR(sv) -= delta; | |
463ee0b2 LW |
5098 | SvPVX(sv) += delta; |
5099 | SvIVX(sv) += delta; | |
79072805 LW |
5100 | } |
5101 | ||
09540bc3 JH |
5102 | /* sv_catpvn() is now a macro using Perl_sv_catpvn_flags(); |
5103 | * this function provided for binary compatibility only | |
5104 | */ | |
5105 | ||
5106 | void | |
5107 | Perl_sv_catpvn(pTHX_ SV *dsv, const char* sstr, STRLEN slen) | |
5108 | { | |
5109 | sv_catpvn_flags(dsv, sstr, slen, SV_GMAGIC); | |
5110 | } | |
5111 | ||
954c1994 GS |
5112 | /* |
5113 | =for apidoc sv_catpvn | |
5114 | ||
5115 | Concatenates the string onto the end of the string which is in the SV. The | |
1e54db1a JH |
5116 | C<len> indicates number of bytes to copy. If the SV has the UTF-8 |
5117 | status set, then the bytes appended should be valid UTF-8. | |
d5ce4a7c | 5118 | Handles 'get' magic, but not 'set' magic. See C<sv_catpvn_mg>. |
954c1994 | 5119 | |
8d6d96c1 HS |
5120 | =for apidoc sv_catpvn_flags |
5121 | ||
5122 | Concatenates the string onto the end of the string which is in the SV. The | |
1e54db1a JH |
5123 | C<len> indicates number of bytes to copy. If the SV has the UTF-8 |
5124 | status set, then the bytes appended should be valid UTF-8. | |
8d6d96c1 HS |
5125 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<dsv> if |
5126 | appropriate, else not. C<sv_catpvn> and C<sv_catpvn_nomg> are implemented | |
5127 | in terms of this function. | |
5128 | ||
5129 | =cut | |
5130 | */ | |
5131 | ||
5132 | void | |
5133 | Perl_sv_catpvn_flags(pTHX_ register SV *dsv, register const char *sstr, register STRLEN slen, I32 flags) | |
5134 | { | |
5135 | STRLEN dlen; | |
5136 | char *dstr; | |
5137 | ||
5138 | dstr = SvPV_force_flags(dsv, dlen, flags); | |
5139 | SvGROW(dsv, dlen + slen + 1); | |
5140 | if (sstr == dstr) | |
5141 | sstr = SvPVX(dsv); | |
5142 | Move(sstr, SvPVX(dsv) + dlen, slen, char); | |
5143 | SvCUR(dsv) += slen; | |
5144 | *SvEND(dsv) = '\0'; | |
5145 | (void)SvPOK_only_UTF8(dsv); /* validate pointer */ | |
5146 | SvTAINT(dsv); | |
79072805 LW |
5147 | } |
5148 | ||
954c1994 GS |
5149 | /* |
5150 | =for apidoc sv_catpvn_mg | |
5151 | ||
5152 | Like C<sv_catpvn>, but also handles 'set' magic. | |
5153 | ||
5154 | =cut | |
5155 | */ | |
5156 | ||
79072805 | 5157 | void |
864dbfa3 | 5158 | Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
ef50df4b GS |
5159 | { |
5160 | sv_catpvn(sv,ptr,len); | |
5161 | SvSETMAGIC(sv); | |
5162 | } | |
5163 | ||
09540bc3 JH |
5164 | /* sv_catsv() is now a macro using Perl_sv_catsv_flags(); |
5165 | * this function provided for binary compatibility only | |
5166 | */ | |
5167 | ||
5168 | void | |
5169 | Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr) | |
5170 | { | |
5171 | sv_catsv_flags(dstr, sstr, SV_GMAGIC); | |
5172 | } | |
5173 | ||
954c1994 GS |
5174 | /* |
5175 | =for apidoc sv_catsv | |
5176 | ||
13e8c8e3 JH |
5177 | Concatenates the string from SV C<ssv> onto the end of the string in |
5178 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. Handles 'get' magic, but | |
5179 | not 'set' magic. See C<sv_catsv_mg>. | |
954c1994 | 5180 | |
8d6d96c1 HS |
5181 | =for apidoc sv_catsv_flags |
5182 | ||
5183 | Concatenates the string from SV C<ssv> onto the end of the string in | |
5184 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. If C<flags> has C<SV_GMAGIC> | |
5185 | bit set, will C<mg_get> on the SVs if appropriate, else not. C<sv_catsv> | |
5186 | and C<sv_catsv_nomg> are implemented in terms of this function. | |
5187 | ||
5188 | =cut */ | |
5189 | ||
ef50df4b | 5190 | void |
8d6d96c1 | 5191 | Perl_sv_catsv_flags(pTHX_ SV *dsv, register SV *ssv, I32 flags) |
79072805 | 5192 | { |
13e8c8e3 JH |
5193 | char *spv; |
5194 | STRLEN slen; | |
46199a12 | 5195 | if (!ssv) |
79072805 | 5196 | return; |
46199a12 | 5197 | if ((spv = SvPV(ssv, slen))) { |
4fd84b44 AD |
5198 | /* sutf8 and dutf8 were type bool, but under USE_ITHREADS, |
5199 | gcc version 2.95.2 20000220 (Debian GNU/Linux) for | |
8cf8f3d1 NIS |
5200 | Linux xxx 2.2.17 on sparc64 with gcc -O2, we erroneously |
5201 | get dutf8 = 0x20000000, (i.e. SVf_UTF8) even though | |
4fd84b44 AD |
5202 | dsv->sv_flags doesn't have that bit set. |
5203 | Andy Dougherty 12 Oct 2001 | |
5204 | */ | |
5205 | I32 sutf8 = DO_UTF8(ssv); | |
5206 | I32 dutf8; | |
13e8c8e3 | 5207 | |
8d6d96c1 HS |
5208 | if (SvGMAGICAL(dsv) && (flags & SV_GMAGIC)) |
5209 | mg_get(dsv); | |
5210 | dutf8 = DO_UTF8(dsv); | |
5211 | ||
5212 | if (dutf8 != sutf8) { | |
13e8c8e3 | 5213 | if (dutf8) { |
46199a12 | 5214 | /* Not modifying source SV, so taking a temporary copy. */ |
8d6d96c1 | 5215 | SV* csv = sv_2mortal(newSVpvn(spv, slen)); |
13e8c8e3 | 5216 | |
46199a12 | 5217 | sv_utf8_upgrade(csv); |
8d6d96c1 | 5218 | spv = SvPV(csv, slen); |
13e8c8e3 | 5219 | } |
8d6d96c1 HS |
5220 | else |
5221 | sv_utf8_upgrade_nomg(dsv); | |
e84ff256 | 5222 | } |
8d6d96c1 | 5223 | sv_catpvn_nomg(dsv, spv, slen); |
560a288e | 5224 | } |
79072805 LW |
5225 | } |
5226 | ||
954c1994 GS |
5227 | /* |
5228 | =for apidoc sv_catsv_mg | |
5229 | ||
5230 | Like C<sv_catsv>, but also handles 'set' magic. | |
5231 | ||
5232 | =cut | |
5233 | */ | |
5234 | ||
79072805 | 5235 | void |
46199a12 | 5236 | Perl_sv_catsv_mg(pTHX_ SV *dsv, register SV *ssv) |
ef50df4b | 5237 | { |
46199a12 JH |
5238 | sv_catsv(dsv,ssv); |
5239 | SvSETMAGIC(dsv); | |
ef50df4b GS |
5240 | } |
5241 | ||
954c1994 GS |
5242 | /* |
5243 | =for apidoc sv_catpv | |
5244 | ||
5245 | Concatenates the string onto the end of the string which is in the SV. | |
1e54db1a JH |
5246 | If the SV has the UTF-8 status set, then the bytes appended should be |
5247 | valid UTF-8. Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>. | |
954c1994 | 5248 | |
d5ce4a7c | 5249 | =cut */ |
954c1994 | 5250 | |
ef50df4b | 5251 | void |
0c981600 | 5252 | Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
5253 | { |
5254 | register STRLEN len; | |
463ee0b2 | 5255 | STRLEN tlen; |
748a9306 | 5256 | char *junk; |
79072805 | 5257 | |
0c981600 | 5258 | if (!ptr) |
79072805 | 5259 | return; |
748a9306 | 5260 | junk = SvPV_force(sv, tlen); |
0c981600 | 5261 | len = strlen(ptr); |
463ee0b2 | 5262 | SvGROW(sv, tlen + len + 1); |
0c981600 JH |
5263 | if (ptr == junk) |
5264 | ptr = SvPVX(sv); | |
5265 | Move(ptr,SvPVX(sv)+tlen,len+1,char); | |
79072805 | 5266 | SvCUR(sv) += len; |
d41ff1b8 | 5267 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 5268 | SvTAINT(sv); |
79072805 LW |
5269 | } |
5270 | ||
954c1994 GS |
5271 | /* |
5272 | =for apidoc sv_catpv_mg | |
5273 | ||
5274 | Like C<sv_catpv>, but also handles 'set' magic. | |
5275 | ||
5276 | =cut | |
5277 | */ | |
5278 | ||
ef50df4b | 5279 | void |
0c981600 | 5280 | Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b | 5281 | { |
0c981600 | 5282 | sv_catpv(sv,ptr); |
ef50df4b GS |
5283 | SvSETMAGIC(sv); |
5284 | } | |
5285 | ||
645c22ef DM |
5286 | /* |
5287 | =for apidoc newSV | |
5288 | ||
5289 | Create a new null SV, or if len > 0, create a new empty SVt_PV type SV | |
5290 | with an initial PV allocation of len+1. Normally accessed via the C<NEWSV> | |
5291 | macro. | |
5292 | ||
5293 | =cut | |
5294 | */ | |
5295 | ||
79072805 | 5296 | SV * |
864dbfa3 | 5297 | Perl_newSV(pTHX_ STRLEN len) |
79072805 LW |
5298 | { |
5299 | register SV *sv; | |
1c846c1f | 5300 | |
4561caa4 | 5301 | new_SV(sv); |
79072805 LW |
5302 | if (len) { |
5303 | sv_upgrade(sv, SVt_PV); | |
5304 | SvGROW(sv, len + 1); | |
5305 | } | |
5306 | return sv; | |
5307 | } | |
954c1994 | 5308 | /* |
92110913 | 5309 | =for apidoc sv_magicext |
954c1994 | 5310 | |
68795e93 | 5311 | Adds magic to an SV, upgrading it if necessary. Applies the |
92110913 NIS |
5312 | supplied vtable and returns pointer to the magic added. |
5313 | ||
5314 | Note that sv_magicext will allow things that sv_magic will not. | |
68795e93 | 5315 | In particular you can add magic to SvREADONLY SVs and and more than |
92110913 | 5316 | one instance of the same 'how' |
645c22ef | 5317 | |
92110913 | 5318 | I C<namelen> is greater then zero then a savepvn() I<copy> of C<name> is stored, |
68795e93 NIS |
5319 | if C<namelen> is zero then C<name> is stored as-is and - as another special |
5320 | case - if C<(name && namelen == HEf_SVKEY)> then C<name> is assumed to contain | |
92110913 NIS |
5321 | an C<SV*> and has its REFCNT incremented |
5322 | ||
5323 | (This is now used as a subroutine by sv_magic.) | |
954c1994 GS |
5324 | |
5325 | =cut | |
5326 | */ | |
92110913 NIS |
5327 | MAGIC * |
5328 | Perl_sv_magicext(pTHX_ SV* sv, SV* obj, int how, MGVTBL *vtable, | |
5329 | const char* name, I32 namlen) | |
79072805 LW |
5330 | { |
5331 | MAGIC* mg; | |
68795e93 | 5332 | |
92110913 NIS |
5333 | if (SvTYPE(sv) < SVt_PVMG) { |
5334 | (void)SvUPGRADE(sv, SVt_PVMG); | |
463ee0b2 | 5335 | } |
79072805 LW |
5336 | Newz(702,mg, 1, MAGIC); |
5337 | mg->mg_moremagic = SvMAGIC(sv); | |
79072805 | 5338 | SvMAGIC(sv) = mg; |
75f9d97a | 5339 | |
18808301 | 5340 | /* Some magic sontains a reference loop, where the sv and object refer to |
bb03859b RS |
5341 | each other. To prevent a reference loop that would prevent such |
5342 | objects being freed, we look for such loops and if we find one we | |
87f0b213 JH |
5343 | avoid incrementing the object refcount. |
5344 | ||
5345 | Note we cannot do this to avoid self-tie loops as intervening RV must | |
b5ccf5f2 | 5346 | have its REFCNT incremented to keep it in existence. |
87f0b213 JH |
5347 | |
5348 | */ | |
14befaf4 DM |
5349 | if (!obj || obj == sv || |
5350 | how == PERL_MAGIC_arylen || | |
5351 | how == PERL_MAGIC_qr || | |
75f9d97a JH |
5352 | (SvTYPE(obj) == SVt_PVGV && |
5353 | (GvSV(obj) == sv || GvHV(obj) == (HV*)sv || GvAV(obj) == (AV*)sv || | |
5354 | GvCV(obj) == (CV*)sv || GvIOp(obj) == (IO*)sv || | |
2628be26 | 5355 | GvFORM(obj) == (CV*)sv))) |
75f9d97a | 5356 | { |
8990e307 | 5357 | mg->mg_obj = obj; |
75f9d97a | 5358 | } |
85e6fe83 | 5359 | else { |
8990e307 | 5360 | mg->mg_obj = SvREFCNT_inc(obj); |
85e6fe83 LW |
5361 | mg->mg_flags |= MGf_REFCOUNTED; |
5362 | } | |
b5ccf5f2 YST |
5363 | |
5364 | /* Normal self-ties simply pass a null object, and instead of | |
5365 | using mg_obj directly, use the SvTIED_obj macro to produce a | |
5366 | new RV as needed. For glob "self-ties", we are tieing the PVIO | |
5367 | with an RV obj pointing to the glob containing the PVIO. In | |
5368 | this case, to avoid a reference loop, we need to weaken the | |
5369 | reference. | |
5370 | */ | |
5371 | ||
5372 | if (how == PERL_MAGIC_tiedscalar && SvTYPE(sv) == SVt_PVIO && | |
5373 | obj && SvROK(obj) && GvIO(SvRV(obj)) == (IO*)sv) | |
5374 | { | |
5375 | sv_rvweaken(obj); | |
5376 | } | |
5377 | ||
79072805 | 5378 | mg->mg_type = how; |
565764a8 | 5379 | mg->mg_len = namlen; |
9cbac4c7 | 5380 | if (name) { |
92110913 | 5381 | if (namlen > 0) |
1edc1566 | 5382 | mg->mg_ptr = savepvn(name, namlen); |
c6ee37c5 | 5383 | else if (namlen == HEf_SVKEY) |
1edc1566 | 5384 | mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name); |
68795e93 | 5385 | else |
92110913 | 5386 | mg->mg_ptr = (char *) name; |
9cbac4c7 | 5387 | } |
92110913 | 5388 | mg->mg_virtual = vtable; |
68795e93 | 5389 | |
92110913 NIS |
5390 | mg_magical(sv); |
5391 | if (SvGMAGICAL(sv)) | |
5392 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
5393 | return mg; | |
5394 | } | |
5395 | ||
5396 | /* | |
5397 | =for apidoc sv_magic | |
1c846c1f | 5398 | |
92110913 NIS |
5399 | Adds magic to an SV. First upgrades C<sv> to type C<SVt_PVMG> if necessary, |
5400 | then adds a new magic item of type C<how> to the head of the magic list. | |
5401 | ||
5402 | =cut | |
5403 | */ | |
5404 | ||
5405 | void | |
5406 | Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen) | |
68795e93 | 5407 | { |
92110913 NIS |
5408 | MAGIC* mg; |
5409 | MGVTBL *vtable = 0; | |
5410 | ||
765f542d NC |
5411 | #ifdef PERL_COPY_ON_WRITE |
5412 | if (SvIsCOW(sv)) | |
5413 | sv_force_normal_flags(sv, 0); | |
5414 | #endif | |
92110913 | 5415 | if (SvREADONLY(sv)) { |
923e4eb5 | 5416 | if (IN_PERL_RUNTIME |
92110913 NIS |
5417 | && how != PERL_MAGIC_regex_global |
5418 | && how != PERL_MAGIC_bm | |
5419 | && how != PERL_MAGIC_fm | |
5420 | && how != PERL_MAGIC_sv | |
e6469971 | 5421 | && how != PERL_MAGIC_backref |
92110913 NIS |
5422 | ) |
5423 | { | |
5424 | Perl_croak(aTHX_ PL_no_modify); | |
5425 | } | |
5426 | } | |
5427 | if (SvMAGICAL(sv) || (how == PERL_MAGIC_taint && SvTYPE(sv) >= SVt_PVMG)) { | |
5428 | if (SvMAGIC(sv) && (mg = mg_find(sv, how))) { | |
68795e93 NIS |
5429 | /* sv_magic() refuses to add a magic of the same 'how' as an |
5430 | existing one | |
92110913 NIS |
5431 | */ |
5432 | if (how == PERL_MAGIC_taint) | |
5433 | mg->mg_len |= 1; | |
5434 | return; | |
5435 | } | |
5436 | } | |
68795e93 | 5437 | |
79072805 | 5438 | switch (how) { |
14befaf4 | 5439 | case PERL_MAGIC_sv: |
92110913 | 5440 | vtable = &PL_vtbl_sv; |
79072805 | 5441 | break; |
14befaf4 | 5442 | case PERL_MAGIC_overload: |
92110913 | 5443 | vtable = &PL_vtbl_amagic; |
a0d0e21e | 5444 | break; |
14befaf4 | 5445 | case PERL_MAGIC_overload_elem: |
92110913 | 5446 | vtable = &PL_vtbl_amagicelem; |
a0d0e21e | 5447 | break; |
14befaf4 | 5448 | case PERL_MAGIC_overload_table: |
92110913 | 5449 | vtable = &PL_vtbl_ovrld; |
a0d0e21e | 5450 | break; |
14befaf4 | 5451 | case PERL_MAGIC_bm: |
92110913 | 5452 | vtable = &PL_vtbl_bm; |
79072805 | 5453 | break; |
14befaf4 | 5454 | case PERL_MAGIC_regdata: |
92110913 | 5455 | vtable = &PL_vtbl_regdata; |
6cef1e77 | 5456 | break; |
14befaf4 | 5457 | case PERL_MAGIC_regdatum: |
92110913 | 5458 | vtable = &PL_vtbl_regdatum; |
6cef1e77 | 5459 | break; |
14befaf4 | 5460 | case PERL_MAGIC_env: |
92110913 | 5461 | vtable = &PL_vtbl_env; |
79072805 | 5462 | break; |
14befaf4 | 5463 | case PERL_MAGIC_fm: |
92110913 | 5464 | vtable = &PL_vtbl_fm; |
55497cff | 5465 | break; |
14befaf4 | 5466 | case PERL_MAGIC_envelem: |
92110913 | 5467 | vtable = &PL_vtbl_envelem; |
79072805 | 5468 | break; |
14befaf4 | 5469 | case PERL_MAGIC_regex_global: |
92110913 | 5470 | vtable = &PL_vtbl_mglob; |
93a17b20 | 5471 | break; |
14befaf4 | 5472 | case PERL_MAGIC_isa: |
92110913 | 5473 | vtable = &PL_vtbl_isa; |
463ee0b2 | 5474 | break; |
14befaf4 | 5475 | case PERL_MAGIC_isaelem: |
92110913 | 5476 | vtable = &PL_vtbl_isaelem; |
463ee0b2 | 5477 | break; |
14befaf4 | 5478 | case PERL_MAGIC_nkeys: |
92110913 | 5479 | vtable = &PL_vtbl_nkeys; |
16660edb | 5480 | break; |
14befaf4 | 5481 | case PERL_MAGIC_dbfile: |
92110913 | 5482 | vtable = 0; |
93a17b20 | 5483 | break; |
14befaf4 | 5484 | case PERL_MAGIC_dbline: |
92110913 | 5485 | vtable = &PL_vtbl_dbline; |
79072805 | 5486 | break; |
36477c24 | 5487 | #ifdef USE_LOCALE_COLLATE |
14befaf4 | 5488 | case PERL_MAGIC_collxfrm: |
92110913 | 5489 | vtable = &PL_vtbl_collxfrm; |
bbce6d69 | 5490 | break; |
36477c24 | 5491 | #endif /* USE_LOCALE_COLLATE */ |
14befaf4 | 5492 | case PERL_MAGIC_tied: |
92110913 | 5493 | vtable = &PL_vtbl_pack; |
463ee0b2 | 5494 | break; |
14befaf4 DM |
5495 | case PERL_MAGIC_tiedelem: |
5496 | case PERL_MAGIC_tiedscalar: | |
92110913 | 5497 | vtable = &PL_vtbl_packelem; |
463ee0b2 | 5498 | break; |
14befaf4 | 5499 | case PERL_MAGIC_qr: |
92110913 | 5500 | vtable = &PL_vtbl_regexp; |
c277df42 | 5501 | break; |
14befaf4 | 5502 | case PERL_MAGIC_sig: |
92110913 | 5503 | vtable = &PL_vtbl_sig; |
79072805 | 5504 | break; |
14befaf4 | 5505 | case PERL_MAGIC_sigelem: |
92110913 | 5506 | vtable = &PL_vtbl_sigelem; |
79072805 | 5507 | break; |
14befaf4 | 5508 | case PERL_MAGIC_taint: |
92110913 | 5509 | vtable = &PL_vtbl_taint; |
463ee0b2 | 5510 | break; |
14befaf4 | 5511 | case PERL_MAGIC_uvar: |
92110913 | 5512 | vtable = &PL_vtbl_uvar; |
79072805 | 5513 | break; |
14befaf4 | 5514 | case PERL_MAGIC_vec: |
92110913 | 5515 | vtable = &PL_vtbl_vec; |
79072805 | 5516 | break; |
ece467f9 JP |
5517 | case PERL_MAGIC_vstring: |
5518 | vtable = 0; | |
5519 | break; | |
7e8c5dac HS |
5520 | case PERL_MAGIC_utf8: |
5521 | vtable = &PL_vtbl_utf8; | |
5522 | break; | |
14befaf4 | 5523 | case PERL_MAGIC_substr: |
92110913 | 5524 | vtable = &PL_vtbl_substr; |
79072805 | 5525 | break; |
14befaf4 | 5526 | case PERL_MAGIC_defelem: |
92110913 | 5527 | vtable = &PL_vtbl_defelem; |
5f05dabc | 5528 | break; |
14befaf4 | 5529 | case PERL_MAGIC_glob: |
92110913 | 5530 | vtable = &PL_vtbl_glob; |
79072805 | 5531 | break; |
14befaf4 | 5532 | case PERL_MAGIC_arylen: |
92110913 | 5533 | vtable = &PL_vtbl_arylen; |
79072805 | 5534 | break; |
14befaf4 | 5535 | case PERL_MAGIC_pos: |
92110913 | 5536 | vtable = &PL_vtbl_pos; |
a0d0e21e | 5537 | break; |
14befaf4 | 5538 | case PERL_MAGIC_backref: |
92110913 | 5539 | vtable = &PL_vtbl_backref; |
810b8aa5 | 5540 | break; |
14befaf4 DM |
5541 | case PERL_MAGIC_ext: |
5542 | /* Reserved for use by extensions not perl internals. */ | |
4633a7c4 LW |
5543 | /* Useful for attaching extension internal data to perl vars. */ |
5544 | /* Note that multiple extensions may clash if magical scalars */ | |
5545 | /* etc holding private data from one are passed to another. */ | |
a0d0e21e | 5546 | break; |
79072805 | 5547 | default: |
14befaf4 | 5548 | Perl_croak(aTHX_ "Don't know how to handle magic of type \\%o", how); |
463ee0b2 | 5549 | } |
68795e93 | 5550 | |
92110913 NIS |
5551 | /* Rest of work is done else where */ |
5552 | mg = sv_magicext(sv,obj,how,vtable,name,namlen); | |
68795e93 | 5553 | |
92110913 NIS |
5554 | switch (how) { |
5555 | case PERL_MAGIC_taint: | |
5556 | mg->mg_len = 1; | |
5557 | break; | |
5558 | case PERL_MAGIC_ext: | |
5559 | case PERL_MAGIC_dbfile: | |
5560 | SvRMAGICAL_on(sv); | |
5561 | break; | |
5562 | } | |
463ee0b2 LW |
5563 | } |
5564 | ||
c461cf8f JH |
5565 | /* |
5566 | =for apidoc sv_unmagic | |
5567 | ||
645c22ef | 5568 | Removes all magic of type C<type> from an SV. |
c461cf8f JH |
5569 | |
5570 | =cut | |
5571 | */ | |
5572 | ||
463ee0b2 | 5573 | int |
864dbfa3 | 5574 | Perl_sv_unmagic(pTHX_ SV *sv, int type) |
463ee0b2 LW |
5575 | { |
5576 | MAGIC* mg; | |
5577 | MAGIC** mgp; | |
91bba347 | 5578 | if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv)) |
463ee0b2 LW |
5579 | return 0; |
5580 | mgp = &SvMAGIC(sv); | |
5581 | for (mg = *mgp; mg; mg = *mgp) { | |
5582 | if (mg->mg_type == type) { | |
5583 | MGVTBL* vtbl = mg->mg_virtual; | |
5584 | *mgp = mg->mg_moremagic; | |
1d7c1841 | 5585 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 | 5586 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
14befaf4 | 5587 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
92110913 | 5588 | if (mg->mg_len > 0) |
1edc1566 | 5589 | Safefree(mg->mg_ptr); |
565764a8 | 5590 | else if (mg->mg_len == HEf_SVKEY) |
1edc1566 | 5591 | SvREFCNT_dec((SV*)mg->mg_ptr); |
7e8c5dac HS |
5592 | else if (mg->mg_type == PERL_MAGIC_utf8 && mg->mg_ptr) |
5593 | Safefree(mg->mg_ptr); | |
9cbac4c7 | 5594 | } |
a0d0e21e LW |
5595 | if (mg->mg_flags & MGf_REFCOUNTED) |
5596 | SvREFCNT_dec(mg->mg_obj); | |
463ee0b2 LW |
5597 | Safefree(mg); |
5598 | } | |
5599 | else | |
5600 | mgp = &mg->mg_moremagic; | |
79072805 | 5601 | } |
91bba347 | 5602 | if (!SvMAGIC(sv)) { |
463ee0b2 | 5603 | SvMAGICAL_off(sv); |
06759ea0 | 5604 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
463ee0b2 LW |
5605 | } |
5606 | ||
5607 | return 0; | |
79072805 LW |
5608 | } |
5609 | ||
c461cf8f JH |
5610 | /* |
5611 | =for apidoc sv_rvweaken | |
5612 | ||
645c22ef DM |
5613 | Weaken a reference: set the C<SvWEAKREF> flag on this RV; give the |
5614 | referred-to SV C<PERL_MAGIC_backref> magic if it hasn't already; and | |
5615 | push a back-reference to this RV onto the array of backreferences | |
5616 | associated with that magic. | |
c461cf8f JH |
5617 | |
5618 | =cut | |
5619 | */ | |
5620 | ||
810b8aa5 | 5621 | SV * |
864dbfa3 | 5622 | Perl_sv_rvweaken(pTHX_ SV *sv) |
810b8aa5 GS |
5623 | { |
5624 | SV *tsv; | |
5625 | if (!SvOK(sv)) /* let undefs pass */ | |
5626 | return sv; | |
5627 | if (!SvROK(sv)) | |
cea2e8a9 | 5628 | Perl_croak(aTHX_ "Can't weaken a nonreference"); |
810b8aa5 | 5629 | else if (SvWEAKREF(sv)) { |
810b8aa5 | 5630 | if (ckWARN(WARN_MISC)) |
9014280d | 5631 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Reference is already weak"); |
810b8aa5 GS |
5632 | return sv; |
5633 | } | |
5634 | tsv = SvRV(sv); | |
5635 | sv_add_backref(tsv, sv); | |
5636 | SvWEAKREF_on(sv); | |
1c846c1f | 5637 | SvREFCNT_dec(tsv); |
810b8aa5 GS |
5638 | return sv; |
5639 | } | |
5640 | ||
645c22ef DM |
5641 | /* Give tsv backref magic if it hasn't already got it, then push a |
5642 | * back-reference to sv onto the array associated with the backref magic. | |
5643 | */ | |
5644 | ||
810b8aa5 | 5645 | STATIC void |
cea2e8a9 | 5646 | S_sv_add_backref(pTHX_ SV *tsv, SV *sv) |
810b8aa5 GS |
5647 | { |
5648 | AV *av; | |
5649 | MAGIC *mg; | |
14befaf4 | 5650 | if (SvMAGICAL(tsv) && (mg = mg_find(tsv, PERL_MAGIC_backref))) |
810b8aa5 GS |
5651 | av = (AV*)mg->mg_obj; |
5652 | else { | |
5653 | av = newAV(); | |
14befaf4 | 5654 | sv_magic(tsv, (SV*)av, PERL_MAGIC_backref, NULL, 0); |
d99b02a1 DM |
5655 | /* av now has a refcnt of 2, which avoids it getting freed |
5656 | * before us during global cleanup. The extra ref is removed | |
5657 | * by magic_killbackrefs() when tsv is being freed */ | |
810b8aa5 | 5658 | } |
d91d49e8 | 5659 | if (AvFILLp(av) >= AvMAX(av)) { |
fdc9a813 | 5660 | I32 i; |
d91d49e8 | 5661 | SV **svp = AvARRAY(av); |
fdc9a813 AE |
5662 | for (i = AvFILLp(av); i >= 0; i--) |
5663 | if (!svp[i]) { | |
d91d49e8 MM |
5664 | svp[i] = sv; /* reuse the slot */ |
5665 | return; | |
5666 | } | |
d91d49e8 MM |
5667 | av_extend(av, AvFILLp(av)+1); |
5668 | } | |
5669 | AvARRAY(av)[++AvFILLp(av)] = sv; /* av_push() */ | |
810b8aa5 GS |
5670 | } |
5671 | ||
645c22ef DM |
5672 | /* delete a back-reference to ourselves from the backref magic associated |
5673 | * with the SV we point to. | |
5674 | */ | |
5675 | ||
1c846c1f | 5676 | STATIC void |
cea2e8a9 | 5677 | S_sv_del_backref(pTHX_ SV *sv) |
810b8aa5 GS |
5678 | { |
5679 | AV *av; | |
5680 | SV **svp; | |
5681 | I32 i; | |
5682 | SV *tsv = SvRV(sv); | |
c04a4dfe | 5683 | MAGIC *mg = NULL; |
14befaf4 | 5684 | if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, PERL_MAGIC_backref))) |
cea2e8a9 | 5685 | Perl_croak(aTHX_ "panic: del_backref"); |
810b8aa5 GS |
5686 | av = (AV *)mg->mg_obj; |
5687 | svp = AvARRAY(av); | |
fdc9a813 AE |
5688 | for (i = AvFILLp(av); i >= 0; i--) |
5689 | if (svp[i] == sv) svp[i] = Nullsv; | |
810b8aa5 GS |
5690 | } |
5691 | ||
954c1994 GS |
5692 | /* |
5693 | =for apidoc sv_insert | |
5694 | ||
5695 | Inserts a string at the specified offset/length within the SV. Similar to | |
5696 | the Perl substr() function. | |
5697 | ||
5698 | =cut | |
5699 | */ | |
5700 | ||
79072805 | 5701 | void |
864dbfa3 | 5702 | Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen) |
79072805 LW |
5703 | { |
5704 | register char *big; | |
5705 | register char *mid; | |
5706 | register char *midend; | |
5707 | register char *bigend; | |
5708 | register I32 i; | |
6ff81951 | 5709 | STRLEN curlen; |
1c846c1f | 5710 | |
79072805 | 5711 | |
8990e307 | 5712 | if (!bigstr) |
cea2e8a9 | 5713 | Perl_croak(aTHX_ "Can't modify non-existent substring"); |
6ff81951 | 5714 | SvPV_force(bigstr, curlen); |
60fa28ff | 5715 | (void)SvPOK_only_UTF8(bigstr); |
6ff81951 GS |
5716 | if (offset + len > curlen) { |
5717 | SvGROW(bigstr, offset+len+1); | |
5718 | Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char); | |
5719 | SvCUR_set(bigstr, offset+len); | |
5720 | } | |
79072805 | 5721 | |
69b47968 | 5722 | SvTAINT(bigstr); |
79072805 LW |
5723 | i = littlelen - len; |
5724 | if (i > 0) { /* string might grow */ | |
a0d0e21e | 5725 | big = SvGROW(bigstr, SvCUR(bigstr) + i + 1); |
79072805 LW |
5726 | mid = big + offset + len; |
5727 | midend = bigend = big + SvCUR(bigstr); | |
5728 | bigend += i; | |
5729 | *bigend = '\0'; | |
5730 | while (midend > mid) /* shove everything down */ | |
5731 | *--bigend = *--midend; | |
5732 | Move(little,big+offset,littlelen,char); | |
5733 | SvCUR(bigstr) += i; | |
5734 | SvSETMAGIC(bigstr); | |
5735 | return; | |
5736 | } | |
5737 | else if (i == 0) { | |
463ee0b2 | 5738 | Move(little,SvPVX(bigstr)+offset,len,char); |
79072805 LW |
5739 | SvSETMAGIC(bigstr); |
5740 | return; | |
5741 | } | |
5742 | ||
463ee0b2 | 5743 | big = SvPVX(bigstr); |
79072805 LW |
5744 | mid = big + offset; |
5745 | midend = mid + len; | |
5746 | bigend = big + SvCUR(bigstr); | |
5747 | ||
5748 | if (midend > bigend) | |
cea2e8a9 | 5749 | Perl_croak(aTHX_ "panic: sv_insert"); |
79072805 LW |
5750 | |
5751 | if (mid - big > bigend - midend) { /* faster to shorten from end */ | |
5752 | if (littlelen) { | |
5753 | Move(little, mid, littlelen,char); | |
5754 | mid += littlelen; | |
5755 | } | |
5756 | i = bigend - midend; | |
5757 | if (i > 0) { | |
5758 | Move(midend, mid, i,char); | |
5759 | mid += i; | |
5760 | } | |
5761 | *mid = '\0'; | |
5762 | SvCUR_set(bigstr, mid - big); | |
5763 | } | |
5764 | /*SUPPRESS 560*/ | |
155aba94 | 5765 | else if ((i = mid - big)) { /* faster from front */ |
79072805 LW |
5766 | midend -= littlelen; |
5767 | mid = midend; | |
5768 | sv_chop(bigstr,midend-i); | |
5769 | big += i; | |
5770 | while (i--) | |
5771 | *--midend = *--big; | |
5772 | if (littlelen) | |
5773 | Move(little, mid, littlelen,char); | |
5774 | } | |
5775 | else if (littlelen) { | |
5776 | midend -= littlelen; | |
5777 | sv_chop(bigstr,midend); | |
5778 | Move(little,midend,littlelen,char); | |
5779 | } | |
5780 | else { | |
5781 | sv_chop(bigstr,midend); | |
5782 | } | |
5783 | SvSETMAGIC(bigstr); | |
5784 | } | |
5785 | ||
c461cf8f JH |
5786 | /* |
5787 | =for apidoc sv_replace | |
5788 | ||
5789 | Make the first argument a copy of the second, then delete the original. | |
645c22ef DM |
5790 | The target SV physically takes over ownership of the body of the source SV |
5791 | and inherits its flags; however, the target keeps any magic it owns, | |
5792 | and any magic in the source is discarded. | |
ff276b08 | 5793 | Note that this is a rather specialist SV copying operation; most of the |
645c22ef | 5794 | time you'll want to use C<sv_setsv> or one of its many macro front-ends. |
c461cf8f JH |
5795 | |
5796 | =cut | |
5797 | */ | |
79072805 LW |
5798 | |
5799 | void | |
864dbfa3 | 5800 | Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv) |
79072805 LW |
5801 | { |
5802 | U32 refcnt = SvREFCNT(sv); | |
765f542d | 5803 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
0453d815 | 5804 | if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL)) |
9014280d | 5805 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "Reference miscount in sv_replace()"); |
93a17b20 | 5806 | if (SvMAGICAL(sv)) { |
a0d0e21e LW |
5807 | if (SvMAGICAL(nsv)) |
5808 | mg_free(nsv); | |
5809 | else | |
5810 | sv_upgrade(nsv, SVt_PVMG); | |
93a17b20 | 5811 | SvMAGIC(nsv) = SvMAGIC(sv); |
a0d0e21e | 5812 | SvFLAGS(nsv) |= SvMAGICAL(sv); |
93a17b20 LW |
5813 | SvMAGICAL_off(sv); |
5814 | SvMAGIC(sv) = 0; | |
5815 | } | |
79072805 LW |
5816 | SvREFCNT(sv) = 0; |
5817 | sv_clear(sv); | |
477f5d66 | 5818 | assert(!SvREFCNT(sv)); |
79072805 | 5819 | StructCopy(nsv,sv,SV); |
d3d0e6f1 NC |
5820 | #ifdef PERL_COPY_ON_WRITE |
5821 | if (SvIsCOW_normal(nsv)) { | |
5822 | /* We need to follow the pointers around the loop to make the | |
5823 | previous SV point to sv, rather than nsv. */ | |
5824 | SV *next; | |
5825 | SV *current = nsv; | |
5826 | while ((next = SV_COW_NEXT_SV(current)) != nsv) { | |
5827 | assert(next); | |
5828 | current = next; | |
5829 | assert(SvPVX(current) == SvPVX(nsv)); | |
5830 | } | |
5831 | /* Make the SV before us point to the SV after us. */ | |
5832 | if (DEBUG_C_TEST) { | |
5833 | PerlIO_printf(Perl_debug_log, "previous is\n"); | |
5834 | sv_dump(current); | |
a29f6d03 NC |
5835 | PerlIO_printf(Perl_debug_log, |
5836 | "move it from 0x%"UVxf" to 0x%"UVxf"\n", | |
d3d0e6f1 NC |
5837 | (UV) SV_COW_NEXT_SV(current), (UV) sv); |
5838 | } | |
a29f6d03 | 5839 | SV_COW_NEXT_SV_SET(current, sv); |
d3d0e6f1 NC |
5840 | } |
5841 | #endif | |
79072805 | 5842 | SvREFCNT(sv) = refcnt; |
1edc1566 | 5843 | SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */ |
39cf41c2 | 5844 | SvREFCNT(nsv) = 0; |
463ee0b2 | 5845 | del_SV(nsv); |
79072805 LW |
5846 | } |
5847 | ||
c461cf8f JH |
5848 | /* |
5849 | =for apidoc sv_clear | |
5850 | ||
645c22ef DM |
5851 | Clear an SV: call any destructors, free up any memory used by the body, |
5852 | and free the body itself. The SV's head is I<not> freed, although | |
5853 | its type is set to all 1's so that it won't inadvertently be assumed | |
5854 | to be live during global destruction etc. | |
5855 | This function should only be called when REFCNT is zero. Most of the time | |
5856 | you'll want to call C<sv_free()> (or its macro wrapper C<SvREFCNT_dec>) | |
5857 | instead. | |
c461cf8f JH |
5858 | |
5859 | =cut | |
5860 | */ | |
5861 | ||
79072805 | 5862 | void |
864dbfa3 | 5863 | Perl_sv_clear(pTHX_ register SV *sv) |
79072805 | 5864 | { |
ec12f114 | 5865 | HV* stash; |
79072805 LW |
5866 | assert(sv); |
5867 | assert(SvREFCNT(sv) == 0); | |
5868 | ||
ed6116ce | 5869 | if (SvOBJECT(sv)) { |
3280af22 | 5870 | if (PL_defstash) { /* Still have a symbol table? */ |
39644a26 | 5871 | dSP; |
32251b26 | 5872 | CV* destructor; |
a0d0e21e | 5873 | |
5cc433a6 | 5874 | |
8ebc5c01 | 5875 | |
d460ef45 | 5876 | do { |
4e8e7886 | 5877 | stash = SvSTASH(sv); |
32251b26 | 5878 | destructor = StashHANDLER(stash,DESTROY); |
4e8e7886 | 5879 | if (destructor) { |
5cc433a6 AB |
5880 | SV* tmpref = newRV(sv); |
5881 | SvREADONLY_on(tmpref); /* DESTROY() could be naughty */ | |
4e8e7886 | 5882 | ENTER; |
e788e7d3 | 5883 | PUSHSTACKi(PERLSI_DESTROY); |
4e8e7886 GS |
5884 | EXTEND(SP, 2); |
5885 | PUSHMARK(SP); | |
5cc433a6 | 5886 | PUSHs(tmpref); |
4e8e7886 | 5887 | PUTBACK; |
44389ee9 | 5888 | call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR|G_VOID); |
7a5fa8a2 NIS |
5889 | |
5890 | ||
d3acc0f7 | 5891 | POPSTACK; |
3095d977 | 5892 | SPAGAIN; |
4e8e7886 | 5893 | LEAVE; |
5cc433a6 AB |
5894 | if(SvREFCNT(tmpref) < 2) { |
5895 | /* tmpref is not kept alive! */ | |
5896 | SvREFCNT(sv)--; | |
5897 | SvRV(tmpref) = 0; | |
5898 | SvROK_off(tmpref); | |
5899 | } | |
5900 | SvREFCNT_dec(tmpref); | |
4e8e7886 GS |
5901 | } |
5902 | } while (SvOBJECT(sv) && SvSTASH(sv) != stash); | |
8ebc5c01 | 5903 | |
6f44e0a4 JP |
5904 | |
5905 | if (SvREFCNT(sv)) { | |
5906 | if (PL_in_clean_objs) | |
cea2e8a9 | 5907 | Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'", |
6f44e0a4 JP |
5908 | HvNAME(stash)); |
5909 | /* DESTROY gave object new lease on life */ | |
5910 | return; | |
5911 | } | |
a0d0e21e | 5912 | } |
4e8e7886 | 5913 | |
a0d0e21e | 5914 | if (SvOBJECT(sv)) { |
4e8e7886 | 5915 | SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */ |
a0d0e21e LW |
5916 | SvOBJECT_off(sv); /* Curse the object. */ |
5917 | if (SvTYPE(sv) != SVt_PVIO) | |
3280af22 | 5918 | --PL_sv_objcount; /* XXX Might want something more general */ |
a0d0e21e | 5919 | } |
463ee0b2 | 5920 | } |
524189f1 JH |
5921 | if (SvTYPE(sv) >= SVt_PVMG) { |
5922 | if (SvMAGIC(sv)) | |
5923 | mg_free(sv); | |
5924 | if (SvFLAGS(sv) & SVpad_TYPED) | |
5925 | SvREFCNT_dec(SvSTASH(sv)); | |
5926 | } | |
ec12f114 | 5927 | stash = NULL; |
79072805 | 5928 | switch (SvTYPE(sv)) { |
8990e307 | 5929 | case SVt_PVIO: |
df0bd2f4 GS |
5930 | if (IoIFP(sv) && |
5931 | IoIFP(sv) != PerlIO_stdin() && | |
5f05dabc | 5932 | IoIFP(sv) != PerlIO_stdout() && |
5933 | IoIFP(sv) != PerlIO_stderr()) | |
93578b34 | 5934 | { |
f2b5be74 | 5935 | io_close((IO*)sv, FALSE); |
93578b34 | 5936 | } |
1d7c1841 | 5937 | if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP)) |
1236053a | 5938 | PerlDir_close(IoDIRP(sv)); |
1d7c1841 | 5939 | IoDIRP(sv) = (DIR*)NULL; |
8990e307 LW |
5940 | Safefree(IoTOP_NAME(sv)); |
5941 | Safefree(IoFMT_NAME(sv)); | |
5942 | Safefree(IoBOTTOM_NAME(sv)); | |
a0d0e21e | 5943 | /* FALL THROUGH */ |
79072805 | 5944 | case SVt_PVBM: |
a0d0e21e | 5945 | goto freescalar; |
79072805 | 5946 | case SVt_PVCV: |
748a9306 | 5947 | case SVt_PVFM: |
85e6fe83 | 5948 | cv_undef((CV*)sv); |
a0d0e21e | 5949 | goto freescalar; |
79072805 | 5950 | case SVt_PVHV: |
85e6fe83 | 5951 | hv_undef((HV*)sv); |
a0d0e21e | 5952 | break; |
79072805 | 5953 | case SVt_PVAV: |
85e6fe83 | 5954 | av_undef((AV*)sv); |
a0d0e21e | 5955 | break; |
02270b4e | 5956 | case SVt_PVLV: |
dd28f7bb DM |
5957 | if (LvTYPE(sv) == 'T') { /* for tie: return HE to pool */ |
5958 | SvREFCNT_dec(HeKEY_sv((HE*)LvTARG(sv))); | |
5959 | HeNEXT((HE*)LvTARG(sv)) = PL_hv_fetch_ent_mh; | |
5960 | PL_hv_fetch_ent_mh = (HE*)LvTARG(sv); | |
5961 | } | |
5962 | else if (LvTYPE(sv) != 't') /* unless tie: unrefcnted fake SV** */ | |
5963 | SvREFCNT_dec(LvTARG(sv)); | |
02270b4e | 5964 | goto freescalar; |
a0d0e21e | 5965 | case SVt_PVGV: |
1edc1566 | 5966 | gp_free((GV*)sv); |
a0d0e21e | 5967 | Safefree(GvNAME(sv)); |
ec12f114 JPC |
5968 | /* cannot decrease stash refcount yet, as we might recursively delete |
5969 | ourselves when the refcnt drops to zero. Delay SvREFCNT_dec | |
5970 | of stash until current sv is completely gone. | |
5971 | -- JohnPC, 27 Mar 1998 */ | |
5972 | stash = GvSTASH(sv); | |
a0d0e21e | 5973 | /* FALL THROUGH */ |
79072805 | 5974 | case SVt_PVMG: |
79072805 LW |
5975 | case SVt_PVNV: |
5976 | case SVt_PVIV: | |
a0d0e21e LW |
5977 | freescalar: |
5978 | (void)SvOOK_off(sv); | |
79072805 LW |
5979 | /* FALL THROUGH */ |
5980 | case SVt_PV: | |
a0d0e21e | 5981 | case SVt_RV: |
810b8aa5 GS |
5982 | if (SvROK(sv)) { |
5983 | if (SvWEAKREF(sv)) | |
5984 | sv_del_backref(sv); | |
5985 | else | |
5986 | SvREFCNT_dec(SvRV(sv)); | |
5987 | } | |
765f542d NC |
5988 | #ifdef PERL_COPY_ON_WRITE |
5989 | else if (SvPVX(sv)) { | |
5990 | if (SvIsCOW(sv)) { | |
5991 | /* I believe I need to grab the global SV mutex here and | |
5992 | then recheck the COW status. */ | |
46187eeb NC |
5993 | if (DEBUG_C_TEST) { |
5994 | PerlIO_printf(Perl_debug_log, "Copy on write: clear\n"); | |
e419cbc5 | 5995 | sv_dump(sv); |
46187eeb | 5996 | } |
e419cbc5 | 5997 | sv_release_COW(sv, SvPVX(sv), SvCUR(sv), SvLEN(sv), |
765f542d NC |
5998 | SvUVX(sv), SV_COW_NEXT_SV(sv)); |
5999 | /* And drop it here. */ | |
6000 | SvFAKE_off(sv); | |
6001 | } else if (SvLEN(sv)) { | |
6002 | Safefree(SvPVX(sv)); | |
6003 | } | |
6004 | } | |
6005 | #else | |
1edc1566 | 6006 | else if (SvPVX(sv) && SvLEN(sv)) |
463ee0b2 | 6007 | Safefree(SvPVX(sv)); |
1c846c1f | 6008 | else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) { |
25716404 GS |
6009 | unsharepvn(SvPVX(sv), |
6010 | SvUTF8(sv) ? -(I32)SvCUR(sv) : SvCUR(sv), | |
6011 | SvUVX(sv)); | |
1c846c1f NIS |
6012 | SvFAKE_off(sv); |
6013 | } | |
765f542d | 6014 | #endif |
79072805 | 6015 | break; |
a0d0e21e | 6016 | /* |
79072805 | 6017 | case SVt_NV: |
79072805 | 6018 | case SVt_IV: |
79072805 LW |
6019 | case SVt_NULL: |
6020 | break; | |
a0d0e21e | 6021 | */ |
79072805 LW |
6022 | } |
6023 | ||
6024 | switch (SvTYPE(sv)) { | |
6025 | case SVt_NULL: | |
6026 | break; | |
79072805 LW |
6027 | case SVt_IV: |
6028 | del_XIV(SvANY(sv)); | |
6029 | break; | |
6030 | case SVt_NV: | |
6031 | del_XNV(SvANY(sv)); | |
6032 | break; | |
ed6116ce LW |
6033 | case SVt_RV: |
6034 | del_XRV(SvANY(sv)); | |
6035 | break; | |
79072805 LW |
6036 | case SVt_PV: |
6037 | del_XPV(SvANY(sv)); | |
6038 | break; | |
6039 | case SVt_PVIV: | |
6040 | del_XPVIV(SvANY(sv)); | |
6041 | break; | |
6042 | case SVt_PVNV: | |
6043 | del_XPVNV(SvANY(sv)); | |
6044 | break; | |
6045 | case SVt_PVMG: | |
6046 | del_XPVMG(SvANY(sv)); | |
6047 | break; | |
6048 | case SVt_PVLV: | |
6049 | del_XPVLV(SvANY(sv)); | |
6050 | break; | |
6051 | case SVt_PVAV: | |
6052 | del_XPVAV(SvANY(sv)); | |
6053 | break; | |
6054 | case SVt_PVHV: | |
6055 | del_XPVHV(SvANY(sv)); | |
6056 | break; | |
6057 | case SVt_PVCV: | |
6058 | del_XPVCV(SvANY(sv)); | |
6059 | break; | |
6060 | case SVt_PVGV: | |
6061 | del_XPVGV(SvANY(sv)); | |
ec12f114 JPC |
6062 | /* code duplication for increased performance. */ |
6063 | SvFLAGS(sv) &= SVf_BREAK; | |
6064 | SvFLAGS(sv) |= SVTYPEMASK; | |
6065 | /* decrease refcount of the stash that owns this GV, if any */ | |
6066 | if (stash) | |
6067 | SvREFCNT_dec(stash); | |
6068 | return; /* not break, SvFLAGS reset already happened */ | |
79072805 LW |
6069 | case SVt_PVBM: |
6070 | del_XPVBM(SvANY(sv)); | |
6071 | break; | |
6072 | case SVt_PVFM: | |
6073 | del_XPVFM(SvANY(sv)); | |
6074 | break; | |
8990e307 LW |
6075 | case SVt_PVIO: |
6076 | del_XPVIO(SvANY(sv)); | |
6077 | break; | |
79072805 | 6078 | } |
a0d0e21e | 6079 | SvFLAGS(sv) &= SVf_BREAK; |
8990e307 | 6080 | SvFLAGS(sv) |= SVTYPEMASK; |
79072805 LW |
6081 | } |
6082 | ||
645c22ef DM |
6083 | /* |
6084 | =for apidoc sv_newref | |
6085 | ||
6086 | Increment an SV's reference count. Use the C<SvREFCNT_inc()> wrapper | |
6087 | instead. | |
6088 | ||
6089 | =cut | |
6090 | */ | |
6091 | ||
79072805 | 6092 | SV * |
864dbfa3 | 6093 | Perl_sv_newref(pTHX_ SV *sv) |
79072805 | 6094 | { |
463ee0b2 | 6095 | if (sv) |
4db098f4 | 6096 | (SvREFCNT(sv))++; |
79072805 LW |
6097 | return sv; |
6098 | } | |
6099 | ||
c461cf8f JH |
6100 | /* |
6101 | =for apidoc sv_free | |
6102 | ||
645c22ef DM |
6103 | Decrement an SV's reference count, and if it drops to zero, call |
6104 | C<sv_clear> to invoke destructors and free up any memory used by | |
6105 | the body; finally, deallocate the SV's head itself. | |
6106 | Normally called via a wrapper macro C<SvREFCNT_dec>. | |
c461cf8f JH |
6107 | |
6108 | =cut | |
6109 | */ | |
6110 | ||
79072805 | 6111 | void |
864dbfa3 | 6112 | Perl_sv_free(pTHX_ SV *sv) |
79072805 LW |
6113 | { |
6114 | if (!sv) | |
6115 | return; | |
a0d0e21e LW |
6116 | if (SvREFCNT(sv) == 0) { |
6117 | if (SvFLAGS(sv) & SVf_BREAK) | |
645c22ef DM |
6118 | /* this SV's refcnt has been artificially decremented to |
6119 | * trigger cleanup */ | |
a0d0e21e | 6120 | return; |
3280af22 | 6121 | if (PL_in_clean_all) /* All is fair */ |
1edc1566 | 6122 | return; |
d689ffdd JP |
6123 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
6124 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
6125 | SvREFCNT(sv) = (~(U32)0)/2; | |
6126 | return; | |
6127 | } | |
0453d815 | 6128 | if (ckWARN_d(WARN_INTERNAL)) |
d5dede04 | 6129 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
472d47bc SB |
6130 | "Attempt to free unreferenced scalar: SV 0x%"UVxf |
6131 | pTHX__FORMAT, PTR2UV(sv) pTHX__VALUE); | |
79072805 LW |
6132 | return; |
6133 | } | |
4db098f4 | 6134 | if (--(SvREFCNT(sv)) > 0) |
8990e307 | 6135 | return; |
8c4d3c90 NC |
6136 | Perl_sv_free2(aTHX_ sv); |
6137 | } | |
6138 | ||
6139 | void | |
6140 | Perl_sv_free2(pTHX_ SV *sv) | |
6141 | { | |
463ee0b2 LW |
6142 | #ifdef DEBUGGING |
6143 | if (SvTEMP(sv)) { | |
0453d815 | 6144 | if (ckWARN_d(WARN_DEBUGGING)) |
9014280d | 6145 | Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), |
472d47bc SB |
6146 | "Attempt to free temp prematurely: SV 0x%"UVxf |
6147 | pTHX__FORMAT, PTR2UV(sv) pTHX__VALUE); | |
79072805 | 6148 | return; |
79072805 | 6149 | } |
463ee0b2 | 6150 | #endif |
d689ffdd JP |
6151 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
6152 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
6153 | SvREFCNT(sv) = (~(U32)0)/2; | |
6154 | return; | |
6155 | } | |
79072805 | 6156 | sv_clear(sv); |
477f5d66 CS |
6157 | if (! SvREFCNT(sv)) |
6158 | del_SV(sv); | |
79072805 LW |
6159 | } |
6160 | ||
954c1994 GS |
6161 | /* |
6162 | =for apidoc sv_len | |
6163 | ||
645c22ef DM |
6164 | Returns the length of the string in the SV. Handles magic and type |
6165 | coercion. See also C<SvCUR>, which gives raw access to the xpv_cur slot. | |
954c1994 GS |
6166 | |
6167 | =cut | |
6168 | */ | |
6169 | ||
79072805 | 6170 | STRLEN |
864dbfa3 | 6171 | Perl_sv_len(pTHX_ register SV *sv) |
79072805 | 6172 | { |
463ee0b2 | 6173 | STRLEN len; |
79072805 LW |
6174 | |
6175 | if (!sv) | |
6176 | return 0; | |
6177 | ||
8990e307 | 6178 | if (SvGMAGICAL(sv)) |
565764a8 | 6179 | len = mg_length(sv); |
8990e307 | 6180 | else |
497b47a8 | 6181 | (void)SvPV(sv, len); |
463ee0b2 | 6182 | return len; |
79072805 LW |
6183 | } |
6184 | ||
c461cf8f JH |
6185 | /* |
6186 | =for apidoc sv_len_utf8 | |
6187 | ||
6188 | Returns the number of characters in the string in an SV, counting wide | |
1e54db1a | 6189 | UTF-8 bytes as a single character. Handles magic and type coercion. |
c461cf8f JH |
6190 | |
6191 | =cut | |
6192 | */ | |
6193 | ||
7e8c5dac HS |
6194 | /* |
6195 | * The length is cached in PERL_UTF8_magic, in the mg_len field. Also the | |
6196 | * mg_ptr is used, by sv_pos_u2b(), see the comments of S_utf8_mg_pos_init(). | |
6197 | * (Note that the mg_len is not the length of the mg_ptr field.) | |
7a5fa8a2 | 6198 | * |
7e8c5dac HS |
6199 | */ |
6200 | ||
a0ed51b3 | 6201 | STRLEN |
864dbfa3 | 6202 | Perl_sv_len_utf8(pTHX_ register SV *sv) |
a0ed51b3 | 6203 | { |
a0ed51b3 LW |
6204 | if (!sv) |
6205 | return 0; | |
6206 | ||
a0ed51b3 | 6207 | if (SvGMAGICAL(sv)) |
b76347f2 | 6208 | return mg_length(sv); |
a0ed51b3 | 6209 | else |
b76347f2 | 6210 | { |
7e8c5dac | 6211 | STRLEN len, ulen; |
b76347f2 | 6212 | U8 *s = (U8*)SvPV(sv, len); |
7e8c5dac HS |
6213 | MAGIC *mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_utf8) : 0; |
6214 | ||
e23c8137 | 6215 | if (mg && mg->mg_len != -1 && (mg->mg_len > 0 || len == 0)) { |
7e8c5dac | 6216 | ulen = mg->mg_len; |
e23c8137 JH |
6217 | #ifdef PERL_UTF8_CACHE_ASSERT |
6218 | assert(ulen == Perl_utf8_length(aTHX_ s, s + len)); | |
6219 | #endif | |
6220 | } | |
7e8c5dac HS |
6221 | else { |
6222 | ulen = Perl_utf8_length(aTHX_ s, s + len); | |
6223 | if (!mg && !SvREADONLY(sv)) { | |
6224 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
6225 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
6226 | assert(mg); | |
6227 | } | |
6228 | if (mg) | |
6229 | mg->mg_len = ulen; | |
6230 | } | |
6231 | return ulen; | |
6232 | } | |
6233 | } | |
6234 | ||
6235 | /* S_utf8_mg_pos_init() is used to initialize the mg_ptr field of | |
6236 | * a PERL_UTF8_magic. The mg_ptr is used to store the mapping | |
6237 | * between UTF-8 and byte offsets. There are two (substr offset and substr | |
6238 | * length, the i offset, PERL_MAGIC_UTF8_CACHESIZE) times two (UTF-8 offset | |
6239 | * and byte offset) cache positions. | |
6240 | * | |
6241 | * The mg_len field is used by sv_len_utf8(), see its comments. | |
6242 | * Note that the mg_len is not the length of the mg_ptr field. | |
6243 | * | |
6244 | */ | |
6245 | STATIC bool | |
6e551876 | 6246 | S_utf8_mg_pos_init(pTHX_ SV *sv, MAGIC **mgp, STRLEN **cachep, I32 i, I32 *offsetp, U8 *s, U8 *start) |
7e8c5dac | 6247 | { |
7a5fa8a2 | 6248 | bool found = FALSE; |
7e8c5dac HS |
6249 | |
6250 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
8f78557a AE |
6251 | if (!*mgp) |
6252 | *mgp = sv_magicext(sv, 0, PERL_MAGIC_utf8, &PL_vtbl_utf8, 0, 0); | |
7e8c5dac | 6253 | assert(*mgp); |
b76347f2 | 6254 | |
7e8c5dac HS |
6255 | if ((*mgp)->mg_ptr) |
6256 | *cachep = (STRLEN *) (*mgp)->mg_ptr; | |
6257 | else { | |
6258 | Newz(0, *cachep, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); | |
6259 | (*mgp)->mg_ptr = (char *) *cachep; | |
6260 | } | |
6261 | assert(*cachep); | |
6262 | ||
6263 | (*cachep)[i] = *offsetp; | |
6264 | (*cachep)[i+1] = s - start; | |
6265 | found = TRUE; | |
a0ed51b3 | 6266 | } |
7e8c5dac HS |
6267 | |
6268 | return found; | |
a0ed51b3 LW |
6269 | } |
6270 | ||
645c22ef | 6271 | /* |
7e8c5dac HS |
6272 | * S_utf8_mg_pos() is used to query and update mg_ptr field of |
6273 | * a PERL_UTF8_magic. The mg_ptr is used to store the mapping | |
6274 | * between UTF-8 and byte offsets. See also the comments of | |
6275 | * S_utf8_mg_pos_init(). | |
6276 | * | |
6277 | */ | |
6278 | STATIC bool | |
6e551876 | 6279 | 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 |
6280 | { |
6281 | bool found = FALSE; | |
6282 | ||
6283 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
6284 | if (!*mgp) | |
6285 | *mgp = mg_find(sv, PERL_MAGIC_utf8); | |
6286 | if (*mgp && (*mgp)->mg_ptr) { | |
6287 | *cachep = (STRLEN *) (*mgp)->mg_ptr; | |
e23c8137 | 6288 | ASSERT_UTF8_CACHE(*cachep); |
667208dd | 6289 | if ((*cachep)[i] == (STRLEN)uoff) /* An exact match. */ |
7a5fa8a2 | 6290 | found = TRUE; |
7e8c5dac HS |
6291 | else { /* We will skip to the right spot. */ |
6292 | STRLEN forw = 0; | |
6293 | STRLEN backw = 0; | |
6294 | U8* p = NULL; | |
6295 | ||
6296 | /* The assumption is that going backward is half | |
6297 | * the speed of going forward (that's where the | |
6298 | * 2 * backw in the below comes from). (The real | |
6299 | * figure of course depends on the UTF-8 data.) */ | |
6300 | ||
667208dd | 6301 | if ((*cachep)[i] > (STRLEN)uoff) { |
7e8c5dac | 6302 | forw = uoff; |
667208dd | 6303 | backw = (*cachep)[i] - (STRLEN)uoff; |
7e8c5dac HS |
6304 | |
6305 | if (forw < 2 * backw) | |
6306 | p = start; | |
6307 | else | |
6308 | p = start + (*cachep)[i+1]; | |
6309 | } | |
6310 | /* Try this only for the substr offset (i == 0), | |
6311 | * not for the substr length (i == 2). */ | |
6312 | else if (i == 0) { /* (*cachep)[i] < uoff */ | |
6313 | STRLEN ulen = sv_len_utf8(sv); | |
6314 | ||
667208dd JH |
6315 | if ((STRLEN)uoff < ulen) { |
6316 | forw = (STRLEN)uoff - (*cachep)[i]; | |
6317 | backw = ulen - (STRLEN)uoff; | |
7e8c5dac HS |
6318 | |
6319 | if (forw < 2 * backw) | |
6320 | p = start + (*cachep)[i+1]; | |
6321 | else | |
6322 | p = send; | |
6323 | } | |
6324 | ||
6325 | /* If the string is not long enough for uoff, | |
6326 | * we could extend it, but not at this low a level. */ | |
6327 | } | |
6328 | ||
6329 | if (p) { | |
6330 | if (forw < 2 * backw) { | |
6331 | while (forw--) | |
6332 | p += UTF8SKIP(p); | |
6333 | } | |
6334 | else { | |
6335 | while (backw--) { | |
6336 | p--; | |
6337 | while (UTF8_IS_CONTINUATION(*p)) | |
6338 | p--; | |
6339 | } | |
6340 | } | |
6341 | ||
6342 | /* Update the cache. */ | |
667208dd | 6343 | (*cachep)[i] = (STRLEN)uoff; |
7e8c5dac | 6344 | (*cachep)[i+1] = p - start; |
8f78557a AE |
6345 | |
6346 | /* Drop the stale "length" cache */ | |
6347 | if (i == 0) { | |
6348 | (*cachep)[2] = 0; | |
6349 | (*cachep)[3] = 0; | |
6350 | } | |
7a5fa8a2 | 6351 | |
7e8c5dac HS |
6352 | found = TRUE; |
6353 | } | |
6354 | } | |
6355 | if (found) { /* Setup the return values. */ | |
6356 | *offsetp = (*cachep)[i+1]; | |
6357 | *sp = start + *offsetp; | |
6358 | if (*sp >= send) { | |
6359 | *sp = send; | |
6360 | *offsetp = send - start; | |
6361 | } | |
6362 | else if (*sp < start) { | |
6363 | *sp = start; | |
6364 | *offsetp = 0; | |
6365 | } | |
6366 | } | |
6367 | } | |
e23c8137 JH |
6368 | #ifdef PERL_UTF8_CACHE_ASSERT |
6369 | if (found) { | |
6370 | U8 *s = start; | |
6371 | I32 n = uoff; | |
6372 | ||
6373 | while (n-- && s < send) | |
6374 | s += UTF8SKIP(s); | |
6375 | ||
6376 | if (i == 0) { | |
6377 | assert(*offsetp == s - start); | |
6378 | assert((*cachep)[0] == (STRLEN)uoff); | |
6379 | assert((*cachep)[1] == *offsetp); | |
6380 | } | |
6381 | ASSERT_UTF8_CACHE(*cachep); | |
6382 | } | |
6383 | #endif | |
7e8c5dac | 6384 | } |
e23c8137 | 6385 | |
7e8c5dac HS |
6386 | return found; |
6387 | } | |
7a5fa8a2 | 6388 | |
7e8c5dac | 6389 | /* |
645c22ef DM |
6390 | =for apidoc sv_pos_u2b |
6391 | ||
1e54db1a | 6392 | Converts the value pointed to by offsetp from a count of UTF-8 chars from |
645c22ef DM |
6393 | the start of the string, to a count of the equivalent number of bytes; if |
6394 | lenp is non-zero, it does the same to lenp, but this time starting from | |
6395 | the offset, rather than from the start of the string. Handles magic and | |
6396 | type coercion. | |
6397 | ||
6398 | =cut | |
6399 | */ | |
6400 | ||
7e8c5dac HS |
6401 | /* |
6402 | * sv_pos_u2b() uses, like sv_pos_b2u(), the mg_ptr of the potential | |
6403 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
6404 | * byte offsets. See also the comments of S_utf8_mg_pos(). | |
6405 | * | |
6406 | */ | |
6407 | ||
a0ed51b3 | 6408 | void |
864dbfa3 | 6409 | Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp) |
a0ed51b3 | 6410 | { |
dfe13c55 GS |
6411 | U8 *start; |
6412 | U8 *s; | |
a0ed51b3 | 6413 | STRLEN len; |
7e8c5dac HS |
6414 | STRLEN *cache = 0; |
6415 | STRLEN boffset = 0; | |
a0ed51b3 LW |
6416 | |
6417 | if (!sv) | |
6418 | return; | |
6419 | ||
dfe13c55 | 6420 | start = s = (U8*)SvPV(sv, len); |
7e8c5dac HS |
6421 | if (len) { |
6422 | I32 uoffset = *offsetp; | |
6423 | U8 *send = s + len; | |
6424 | MAGIC *mg = 0; | |
6425 | bool found = FALSE; | |
6426 | ||
bdf77a2a | 6427 | if (utf8_mg_pos(sv, &mg, &cache, 0, offsetp, *offsetp, &s, start, send)) |
7e8c5dac HS |
6428 | found = TRUE; |
6429 | if (!found && uoffset > 0) { | |
6430 | while (s < send && uoffset--) | |
6431 | s += UTF8SKIP(s); | |
6432 | if (s >= send) | |
6433 | s = send; | |
bdf77a2a | 6434 | if (utf8_mg_pos_init(sv, &mg, &cache, 0, offsetp, s, start)) |
7e8c5dac HS |
6435 | boffset = cache[1]; |
6436 | *offsetp = s - start; | |
6437 | } | |
6438 | if (lenp) { | |
6439 | found = FALSE; | |
6440 | start = s; | |
bdf77a2a | 6441 | if (utf8_mg_pos(sv, &mg, &cache, 2, lenp, *lenp + *offsetp, &s, start, send)) { |
7e8c5dac HS |
6442 | *lenp -= boffset; |
6443 | found = TRUE; | |
6444 | } | |
6445 | if (!found && *lenp > 0) { | |
6446 | I32 ulen = *lenp; | |
6447 | if (ulen > 0) | |
6448 | while (s < send && ulen--) | |
6449 | s += UTF8SKIP(s); | |
6450 | if (s >= send) | |
6451 | s = send; | |
a67d7df9 | 6452 | utf8_mg_pos_init(sv, &mg, &cache, 2, lenp, s, start); |
7e8c5dac HS |
6453 | } |
6454 | *lenp = s - start; | |
6455 | } | |
e23c8137 | 6456 | ASSERT_UTF8_CACHE(cache); |
7e8c5dac HS |
6457 | } |
6458 | else { | |
6459 | *offsetp = 0; | |
6460 | if (lenp) | |
6461 | *lenp = 0; | |
a0ed51b3 | 6462 | } |
e23c8137 | 6463 | |
a0ed51b3 LW |
6464 | return; |
6465 | } | |
6466 | ||
645c22ef DM |
6467 | /* |
6468 | =for apidoc sv_pos_b2u | |
6469 | ||
6470 | Converts the value pointed to by offsetp from a count of bytes from the | |
1e54db1a | 6471 | start of the string, to a count of the equivalent number of UTF-8 chars. |
645c22ef DM |
6472 | Handles magic and type coercion. |
6473 | ||
6474 | =cut | |
6475 | */ | |
6476 | ||
7e8c5dac HS |
6477 | /* |
6478 | * sv_pos_b2u() uses, like sv_pos_u2b(), the mg_ptr of the potential | |
6479 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
6480 | * byte offsets. See also the comments of S_utf8_mg_pos(). | |
6481 | * | |
6482 | */ | |
6483 | ||
a0ed51b3 | 6484 | void |
7e8c5dac | 6485 | Perl_sv_pos_b2u(pTHX_ register SV* sv, I32* offsetp) |
a0ed51b3 | 6486 | { |
7e8c5dac | 6487 | U8* s; |
a0ed51b3 LW |
6488 | STRLEN len; |
6489 | ||
6490 | if (!sv) | |
6491 | return; | |
6492 | ||
dfe13c55 | 6493 | s = (U8*)SvPV(sv, len); |
eb160463 | 6494 | if ((I32)len < *offsetp) |
a0dbb045 | 6495 | Perl_croak(aTHX_ "panic: sv_pos_b2u: bad byte offset"); |
7e8c5dac HS |
6496 | else { |
6497 | U8* send = s + *offsetp; | |
6498 | MAGIC* mg = NULL; | |
6499 | STRLEN *cache = NULL; | |
6500 | ||
6501 | len = 0; | |
6502 | ||
6503 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
6504 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
6505 | if (mg && mg->mg_ptr) { | |
6506 | cache = (STRLEN *) mg->mg_ptr; | |
c5661c80 | 6507 | if (cache[1] == (STRLEN)*offsetp) { |
7e8c5dac HS |
6508 | /* An exact match. */ |
6509 | *offsetp = cache[0]; | |
6510 | ||
6511 | return; | |
6512 | } | |
c5661c80 | 6513 | else if (cache[1] < (STRLEN)*offsetp) { |
7e8c5dac HS |
6514 | /* We already know part of the way. */ |
6515 | len = cache[0]; | |
6516 | s += cache[1]; | |
7a5fa8a2 | 6517 | /* Let the below loop do the rest. */ |
7e8c5dac HS |
6518 | } |
6519 | else { /* cache[1] > *offsetp */ | |
6520 | /* We already know all of the way, now we may | |
6521 | * be able to walk back. The same assumption | |
6522 | * is made as in S_utf8_mg_pos(), namely that | |
6523 | * walking backward is twice slower than | |
6524 | * walking forward. */ | |
6525 | STRLEN forw = *offsetp; | |
6526 | STRLEN backw = cache[1] - *offsetp; | |
6527 | ||
6528 | if (!(forw < 2 * backw)) { | |
6529 | U8 *p = s + cache[1]; | |
6530 | STRLEN ubackw = 0; | |
7a5fa8a2 | 6531 | |
a5b510f2 AE |
6532 | cache[1] -= backw; |
6533 | ||
7e8c5dac HS |
6534 | while (backw--) { |
6535 | p--; | |
0aeb64d0 | 6536 | while (UTF8_IS_CONTINUATION(*p)) { |
7e8c5dac | 6537 | p--; |
0aeb64d0 JH |
6538 | backw--; |
6539 | } | |
7e8c5dac HS |
6540 | ubackw++; |
6541 | } | |
6542 | ||
6543 | cache[0] -= ubackw; | |
0aeb64d0 | 6544 | *offsetp = cache[0]; |
a67d7df9 TS |
6545 | |
6546 | /* Drop the stale "length" cache */ | |
6547 | cache[2] = 0; | |
6548 | cache[3] = 0; | |
6549 | ||
0aeb64d0 | 6550 | return; |
7e8c5dac HS |
6551 | } |
6552 | } | |
6553 | } | |
e23c8137 | 6554 | ASSERT_UTF8_CACHE(cache); |
a0dbb045 | 6555 | } |
7e8c5dac HS |
6556 | |
6557 | while (s < send) { | |
6558 | STRLEN n = 1; | |
6559 | ||
6560 | /* Call utf8n_to_uvchr() to validate the sequence | |
6561 | * (unless a simple non-UTF character) */ | |
6562 | if (!UTF8_IS_INVARIANT(*s)) | |
6563 | utf8n_to_uvchr(s, UTF8SKIP(s), &n, 0); | |
6564 | if (n > 0) { | |
6565 | s += n; | |
6566 | len++; | |
6567 | } | |
6568 | else | |
6569 | break; | |
6570 | } | |
6571 | ||
6572 | if (!SvREADONLY(sv)) { | |
6573 | if (!mg) { | |
6574 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
6575 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
6576 | } | |
6577 | assert(mg); | |
6578 | ||
6579 | if (!mg->mg_ptr) { | |
979acdb5 | 6580 | Newz(0, cache, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); |
7e8c5dac HS |
6581 | mg->mg_ptr = (char *) cache; |
6582 | } | |
6583 | assert(cache); | |
6584 | ||
6585 | cache[0] = len; | |
6586 | cache[1] = *offsetp; | |
a67d7df9 TS |
6587 | /* Drop the stale "length" cache */ |
6588 | cache[2] = 0; | |
6589 | cache[3] = 0; | |
7e8c5dac HS |
6590 | } |
6591 | ||
6592 | *offsetp = len; | |
a0ed51b3 | 6593 | } |
a0ed51b3 LW |
6594 | return; |
6595 | } | |
6596 | ||
954c1994 GS |
6597 | /* |
6598 | =for apidoc sv_eq | |
6599 | ||
6600 | Returns a boolean indicating whether the strings in the two SVs are | |
645c22ef DM |
6601 | identical. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
6602 | coerce its args to strings if necessary. | |
954c1994 GS |
6603 | |
6604 | =cut | |
6605 | */ | |
6606 | ||
79072805 | 6607 | I32 |
e01b9e88 | 6608 | Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2) |
79072805 LW |
6609 | { |
6610 | char *pv1; | |
463ee0b2 | 6611 | STRLEN cur1; |
79072805 | 6612 | char *pv2; |
463ee0b2 | 6613 | STRLEN cur2; |
e01b9e88 | 6614 | I32 eq = 0; |
553e1bcc AT |
6615 | char *tpv = Nullch; |
6616 | SV* svrecode = Nullsv; | |
79072805 | 6617 | |
e01b9e88 | 6618 | if (!sv1) { |
79072805 LW |
6619 | pv1 = ""; |
6620 | cur1 = 0; | |
6621 | } | |
463ee0b2 | 6622 | else |
e01b9e88 | 6623 | pv1 = SvPV(sv1, cur1); |
79072805 | 6624 | |
e01b9e88 SC |
6625 | if (!sv2){ |
6626 | pv2 = ""; | |
6627 | cur2 = 0; | |
92d29cee | 6628 | } |
e01b9e88 SC |
6629 | else |
6630 | pv2 = SvPV(sv2, cur2); | |
79072805 | 6631 | |
cf48d248 | 6632 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
6633 | /* Differing utf8ness. |
6634 | * Do not UTF8size the comparands as a side-effect. */ | |
6635 | if (PL_encoding) { | |
6636 | if (SvUTF8(sv1)) { | |
553e1bcc AT |
6637 | svrecode = newSVpvn(pv2, cur2); |
6638 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6639 | pv2 = SvPV(svrecode, cur2); | |
799ef3cb JH |
6640 | } |
6641 | else { | |
553e1bcc AT |
6642 | svrecode = newSVpvn(pv1, cur1); |
6643 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6644 | pv1 = SvPV(svrecode, cur1); | |
799ef3cb JH |
6645 | } |
6646 | /* Now both are in UTF-8. */ | |
0a1bd7ac DM |
6647 | if (cur1 != cur2) { |
6648 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6649 | return FALSE; |
0a1bd7ac | 6650 | } |
799ef3cb JH |
6651 | } |
6652 | else { | |
6653 | bool is_utf8 = TRUE; | |
6654 | ||
6655 | if (SvUTF8(sv1)) { | |
6656 | /* sv1 is the UTF-8 one, | |
6657 | * if is equal it must be downgrade-able */ | |
6658 | char *pv = (char*)bytes_from_utf8((U8*)pv1, | |
6659 | &cur1, &is_utf8); | |
6660 | if (pv != pv1) | |
553e1bcc | 6661 | pv1 = tpv = pv; |
799ef3cb JH |
6662 | } |
6663 | else { | |
6664 | /* sv2 is the UTF-8 one, | |
6665 | * if is equal it must be downgrade-able */ | |
6666 | char *pv = (char *)bytes_from_utf8((U8*)pv2, | |
6667 | &cur2, &is_utf8); | |
6668 | if (pv != pv2) | |
553e1bcc | 6669 | pv2 = tpv = pv; |
799ef3cb JH |
6670 | } |
6671 | if (is_utf8) { | |
6672 | /* Downgrade not possible - cannot be eq */ | |
bf694877 | 6673 | assert (tpv == 0); |
799ef3cb JH |
6674 | return FALSE; |
6675 | } | |
6676 | } | |
cf48d248 JH |
6677 | } |
6678 | ||
6679 | if (cur1 == cur2) | |
765f542d | 6680 | eq = (pv1 == pv2) || memEQ(pv1, pv2, cur1); |
e01b9e88 | 6681 | |
553e1bcc AT |
6682 | if (svrecode) |
6683 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6684 | |
553e1bcc AT |
6685 | if (tpv) |
6686 | Safefree(tpv); | |
cf48d248 | 6687 | |
e01b9e88 | 6688 | return eq; |
79072805 LW |
6689 | } |
6690 | ||
954c1994 GS |
6691 | /* |
6692 | =for apidoc sv_cmp | |
6693 | ||
6694 | Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the | |
6695 | string in C<sv1> is less than, equal to, or greater than the string in | |
645c22ef DM |
6696 | C<sv2>. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
6697 | coerce its args to strings if necessary. See also C<sv_cmp_locale>. | |
954c1994 GS |
6698 | |
6699 | =cut | |
6700 | */ | |
6701 | ||
79072805 | 6702 | I32 |
e01b9e88 | 6703 | Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2) |
79072805 | 6704 | { |
560a288e | 6705 | STRLEN cur1, cur2; |
553e1bcc | 6706 | char *pv1, *pv2, *tpv = Nullch; |
cf48d248 | 6707 | I32 cmp; |
553e1bcc | 6708 | SV *svrecode = Nullsv; |
560a288e | 6709 | |
e01b9e88 SC |
6710 | if (!sv1) { |
6711 | pv1 = ""; | |
560a288e GS |
6712 | cur1 = 0; |
6713 | } | |
e01b9e88 SC |
6714 | else |
6715 | pv1 = SvPV(sv1, cur1); | |
560a288e | 6716 | |
553e1bcc | 6717 | if (!sv2) { |
e01b9e88 | 6718 | pv2 = ""; |
560a288e GS |
6719 | cur2 = 0; |
6720 | } | |
e01b9e88 SC |
6721 | else |
6722 | pv2 = SvPV(sv2, cur2); | |
79072805 | 6723 | |
cf48d248 | 6724 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
6725 | /* Differing utf8ness. |
6726 | * Do not UTF8size the comparands as a side-effect. */ | |
cf48d248 | 6727 | if (SvUTF8(sv1)) { |
799ef3cb | 6728 | if (PL_encoding) { |
553e1bcc AT |
6729 | svrecode = newSVpvn(pv2, cur2); |
6730 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6731 | pv2 = SvPV(svrecode, cur2); | |
799ef3cb JH |
6732 | } |
6733 | else { | |
553e1bcc | 6734 | pv2 = tpv = (char*)bytes_to_utf8((U8*)pv2, &cur2); |
799ef3cb | 6735 | } |
cf48d248 JH |
6736 | } |
6737 | else { | |
799ef3cb | 6738 | if (PL_encoding) { |
553e1bcc AT |
6739 | svrecode = newSVpvn(pv1, cur1); |
6740 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6741 | pv1 = SvPV(svrecode, cur1); | |
799ef3cb JH |
6742 | } |
6743 | else { | |
553e1bcc | 6744 | pv1 = tpv = (char*)bytes_to_utf8((U8*)pv1, &cur1); |
799ef3cb | 6745 | } |
cf48d248 JH |
6746 | } |
6747 | } | |
6748 | ||
e01b9e88 | 6749 | if (!cur1) { |
cf48d248 | 6750 | cmp = cur2 ? -1 : 0; |
e01b9e88 | 6751 | } else if (!cur2) { |
cf48d248 JH |
6752 | cmp = 1; |
6753 | } else { | |
6754 | I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2); | |
e01b9e88 SC |
6755 | |
6756 | if (retval) { | |
cf48d248 | 6757 | cmp = retval < 0 ? -1 : 1; |
e01b9e88 | 6758 | } else if (cur1 == cur2) { |
cf48d248 JH |
6759 | cmp = 0; |
6760 | } else { | |
6761 | cmp = cur1 < cur2 ? -1 : 1; | |
e01b9e88 | 6762 | } |
cf48d248 | 6763 | } |
16660edb | 6764 | |
553e1bcc AT |
6765 | if (svrecode) |
6766 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6767 | |
553e1bcc AT |
6768 | if (tpv) |
6769 | Safefree(tpv); | |
cf48d248 JH |
6770 | |
6771 | return cmp; | |
bbce6d69 | 6772 | } |
16660edb | 6773 | |
c461cf8f JH |
6774 | /* |
6775 | =for apidoc sv_cmp_locale | |
6776 | ||
645c22ef DM |
6777 | Compares the strings in two SVs in a locale-aware manner. Is UTF-8 and |
6778 | 'use bytes' aware, handles get magic, and will coerce its args to strings | |
6779 | if necessary. See also C<sv_cmp_locale>. See also C<sv_cmp>. | |
c461cf8f JH |
6780 | |
6781 | =cut | |
6782 | */ | |
6783 | ||
bbce6d69 | 6784 | I32 |
864dbfa3 | 6785 | Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2) |
bbce6d69 | 6786 | { |
36477c24 | 6787 | #ifdef USE_LOCALE_COLLATE |
16660edb | 6788 | |
bbce6d69 | 6789 | char *pv1, *pv2; |
6790 | STRLEN len1, len2; | |
6791 | I32 retval; | |
16660edb | 6792 | |
3280af22 | 6793 | if (PL_collation_standard) |
bbce6d69 | 6794 | goto raw_compare; |
16660edb | 6795 | |
bbce6d69 | 6796 | len1 = 0; |
8ac85365 | 6797 | pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL; |
bbce6d69 | 6798 | len2 = 0; |
8ac85365 | 6799 | pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL; |
16660edb | 6800 | |
bbce6d69 | 6801 | if (!pv1 || !len1) { |
6802 | if (pv2 && len2) | |
6803 | return -1; | |
6804 | else | |
6805 | goto raw_compare; | |
6806 | } | |
6807 | else { | |
6808 | if (!pv2 || !len2) | |
6809 | return 1; | |
6810 | } | |
16660edb | 6811 | |
bbce6d69 | 6812 | retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2); |
16660edb | 6813 | |
bbce6d69 | 6814 | if (retval) |
16660edb | 6815 | return retval < 0 ? -1 : 1; |
6816 | ||
bbce6d69 | 6817 | /* |
6818 | * When the result of collation is equality, that doesn't mean | |
6819 | * that there are no differences -- some locales exclude some | |
6820 | * characters from consideration. So to avoid false equalities, | |
6821 | * we use the raw string as a tiebreaker. | |
6822 | */ | |
16660edb | 6823 | |
bbce6d69 | 6824 | raw_compare: |
6825 | /* FALL THROUGH */ | |
16660edb | 6826 | |
36477c24 | 6827 | #endif /* USE_LOCALE_COLLATE */ |
16660edb | 6828 | |
bbce6d69 | 6829 | return sv_cmp(sv1, sv2); |
6830 | } | |
79072805 | 6831 | |
645c22ef | 6832 | |
36477c24 | 6833 | #ifdef USE_LOCALE_COLLATE |
645c22ef | 6834 | |
7a4c00b4 | 6835 | /* |
645c22ef DM |
6836 | =for apidoc sv_collxfrm |
6837 | ||
6838 | Add Collate Transform magic to an SV if it doesn't already have it. | |
6839 | ||
6840 | Any scalar variable may carry PERL_MAGIC_collxfrm magic that contains the | |
6841 | scalar data of the variable, but transformed to such a format that a normal | |
6842 | memory comparison can be used to compare the data according to the locale | |
6843 | settings. | |
6844 | ||
6845 | =cut | |
6846 | */ | |
6847 | ||
bbce6d69 | 6848 | char * |
864dbfa3 | 6849 | Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp) |
bbce6d69 | 6850 | { |
7a4c00b4 | 6851 | MAGIC *mg; |
16660edb | 6852 | |
14befaf4 | 6853 | mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_collxfrm) : (MAGIC *) NULL; |
3280af22 | 6854 | if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) { |
bbce6d69 | 6855 | char *s, *xf; |
6856 | STRLEN len, xlen; | |
6857 | ||
7a4c00b4 | 6858 | if (mg) |
6859 | Safefree(mg->mg_ptr); | |
bbce6d69 | 6860 | s = SvPV(sv, len); |
6861 | if ((xf = mem_collxfrm(s, len, &xlen))) { | |
ff0cee69 | 6862 | if (SvREADONLY(sv)) { |
6863 | SAVEFREEPV(xf); | |
6864 | *nxp = xlen; | |
3280af22 | 6865 | return xf + sizeof(PL_collation_ix); |
ff0cee69 | 6866 | } |
7a4c00b4 | 6867 | if (! mg) { |
14befaf4 DM |
6868 | sv_magic(sv, 0, PERL_MAGIC_collxfrm, 0, 0); |
6869 | mg = mg_find(sv, PERL_MAGIC_collxfrm); | |
7a4c00b4 | 6870 | assert(mg); |
bbce6d69 | 6871 | } |
7a4c00b4 | 6872 | mg->mg_ptr = xf; |
565764a8 | 6873 | mg->mg_len = xlen; |
7a4c00b4 | 6874 | } |
6875 | else { | |
ff0cee69 | 6876 | if (mg) { |
6877 | mg->mg_ptr = NULL; | |
565764a8 | 6878 | mg->mg_len = -1; |
ff0cee69 | 6879 | } |
bbce6d69 | 6880 | } |
6881 | } | |
7a4c00b4 | 6882 | if (mg && mg->mg_ptr) { |
565764a8 | 6883 | *nxp = mg->mg_len; |
3280af22 | 6884 | return mg->mg_ptr + sizeof(PL_collation_ix); |
bbce6d69 | 6885 | } |
6886 | else { | |
6887 | *nxp = 0; | |
6888 | return NULL; | |
16660edb | 6889 | } |
79072805 LW |
6890 | } |
6891 | ||
36477c24 | 6892 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 6893 | |
c461cf8f JH |
6894 | /* |
6895 | =for apidoc sv_gets | |
6896 | ||
6897 | Get a line from the filehandle and store it into the SV, optionally | |
6898 | appending to the currently-stored string. | |
6899 | ||
6900 | =cut | |
6901 | */ | |
6902 | ||
79072805 | 6903 | char * |
864dbfa3 | 6904 | Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append) |
79072805 | 6905 | { |
c07a80fd | 6906 | char *rsptr; |
6907 | STRLEN rslen; | |
6908 | register STDCHAR rslast; | |
6909 | register STDCHAR *bp; | |
6910 | register I32 cnt; | |
9c5ffd7c | 6911 | I32 i = 0; |
8bfdd7d9 | 6912 | I32 rspara = 0; |
e311fd51 | 6913 | I32 recsize; |
c07a80fd | 6914 | |
bc44a8a2 NC |
6915 | if (SvTHINKFIRST(sv)) |
6916 | sv_force_normal_flags(sv, append ? 0 : SV_COW_DROP_PV); | |
765f542d NC |
6917 | /* XXX. If you make this PVIV, then copy on write can copy scalars read |
6918 | from <>. | |
6919 | However, perlbench says it's slower, because the existing swipe code | |
6920 | is faster than copy on write. | |
6921 | Swings and roundabouts. */ | |
6fc92669 | 6922 | (void)SvUPGRADE(sv, SVt_PV); |
99491443 | 6923 | |
ff68c719 | 6924 | SvSCREAM_off(sv); |
efd8b2ba AE |
6925 | |
6926 | if (append) { | |
6927 | if (PerlIO_isutf8(fp)) { | |
6928 | if (!SvUTF8(sv)) { | |
6929 | sv_utf8_upgrade_nomg(sv); | |
6930 | sv_pos_u2b(sv,&append,0); | |
6931 | } | |
6932 | } else if (SvUTF8(sv)) { | |
6933 | SV *tsv = NEWSV(0,0); | |
6934 | sv_gets(tsv, fp, 0); | |
6935 | sv_utf8_upgrade_nomg(tsv); | |
6936 | SvCUR_set(sv,append); | |
6937 | sv_catsv(sv,tsv); | |
6938 | sv_free(tsv); | |
6939 | goto return_string_or_null; | |
6940 | } | |
6941 | } | |
6942 | ||
6943 | SvPOK_only(sv); | |
6944 | if (PerlIO_isutf8(fp)) | |
6945 | SvUTF8_on(sv); | |
c07a80fd | 6946 | |
923e4eb5 | 6947 | if (IN_PERL_COMPILETIME) { |
8bfdd7d9 HS |
6948 | /* we always read code in line mode */ |
6949 | rsptr = "\n"; | |
6950 | rslen = 1; | |
6951 | } | |
6952 | else if (RsSNARF(PL_rs)) { | |
7a5fa8a2 NIS |
6953 | /* If it is a regular disk file use size from stat() as estimate |
6954 | of amount we are going to read - may result in malloc-ing | |
6955 | more memory than we realy need if layers bellow reduce | |
e468d35b NIS |
6956 | size we read (e.g. CRLF or a gzip layer) |
6957 | */ | |
e311fd51 | 6958 | Stat_t st; |
e468d35b NIS |
6959 | if (!PerlLIO_fstat(PerlIO_fileno(fp), &st) && S_ISREG(st.st_mode)) { |
6960 | Off_t offset = PerlIO_tell(fp); | |
58f1856e | 6961 | if (offset != (Off_t) -1 && st.st_size + append > offset) { |
e468d35b NIS |
6962 | (void) SvGROW(sv, (STRLEN)((st.st_size - offset) + append + 1)); |
6963 | } | |
6964 | } | |
c07a80fd | 6965 | rsptr = NULL; |
6966 | rslen = 0; | |
6967 | } | |
3280af22 | 6968 | else if (RsRECORD(PL_rs)) { |
e311fd51 | 6969 | I32 bytesread; |
5b2b9c68 HM |
6970 | char *buffer; |
6971 | ||
6972 | /* Grab the size of the record we're getting */ | |
3280af22 | 6973 | recsize = SvIV(SvRV(PL_rs)); |
e311fd51 | 6974 | buffer = SvGROW(sv, (STRLEN)(recsize + append + 1)) + append; |
5b2b9c68 HM |
6975 | /* Go yank in */ |
6976 | #ifdef VMS | |
6977 | /* VMS wants read instead of fread, because fread doesn't respect */ | |
6978 | /* RMS record boundaries. This is not necessarily a good thing to be */ | |
e468d35b NIS |
6979 | /* doing, but we've got no other real choice - except avoid stdio |
6980 | as implementation - perhaps write a :vms layer ? | |
6981 | */ | |
5b2b9c68 HM |
6982 | bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize); |
6983 | #else | |
6984 | bytesread = PerlIO_read(fp, buffer, recsize); | |
6985 | #endif | |
27e6ca2d AE |
6986 | if (bytesread < 0) |
6987 | bytesread = 0; | |
e311fd51 | 6988 | SvCUR_set(sv, bytesread += append); |
e670df4e | 6989 | buffer[bytesread] = '\0'; |
efd8b2ba | 6990 | goto return_string_or_null; |
5b2b9c68 | 6991 | } |
3280af22 | 6992 | else if (RsPARA(PL_rs)) { |
c07a80fd | 6993 | rsptr = "\n\n"; |
6994 | rslen = 2; | |
8bfdd7d9 | 6995 | rspara = 1; |
c07a80fd | 6996 | } |
7d59b7e4 NIS |
6997 | else { |
6998 | /* Get $/ i.e. PL_rs into same encoding as stream wants */ | |
6999 | if (PerlIO_isutf8(fp)) { | |
7000 | rsptr = SvPVutf8(PL_rs, rslen); | |
7001 | } | |
7002 | else { | |
7003 | if (SvUTF8(PL_rs)) { | |
7004 | if (!sv_utf8_downgrade(PL_rs, TRUE)) { | |
7005 | Perl_croak(aTHX_ "Wide character in $/"); | |
7006 | } | |
7007 | } | |
7008 | rsptr = SvPV(PL_rs, rslen); | |
7009 | } | |
7010 | } | |
7011 | ||
c07a80fd | 7012 | rslast = rslen ? rsptr[rslen - 1] : '\0'; |
7013 | ||
8bfdd7d9 | 7014 | if (rspara) { /* have to do this both before and after */ |
79072805 | 7015 | do { /* to make sure file boundaries work right */ |
760ac839 | 7016 | if (PerlIO_eof(fp)) |
a0d0e21e | 7017 | return 0; |
760ac839 | 7018 | i = PerlIO_getc(fp); |
79072805 | 7019 | if (i != '\n') { |
a0d0e21e LW |
7020 | if (i == -1) |
7021 | return 0; | |
760ac839 | 7022 | PerlIO_ungetc(fp,i); |
79072805 LW |
7023 | break; |
7024 | } | |
7025 | } while (i != EOF); | |
7026 | } | |
c07a80fd | 7027 | |
760ac839 LW |
7028 | /* See if we know enough about I/O mechanism to cheat it ! */ |
7029 | ||
7030 | /* This used to be #ifdef test - it is made run-time test for ease | |
1c846c1f | 7031 | of abstracting out stdio interface. One call should be cheap |
760ac839 LW |
7032 | enough here - and may even be a macro allowing compile |
7033 | time optimization. | |
7034 | */ | |
7035 | ||
7036 | if (PerlIO_fast_gets(fp)) { | |
7037 | ||
7038 | /* | |
7039 | * We're going to steal some values from the stdio struct | |
7040 | * and put EVERYTHING in the innermost loop into registers. | |
7041 | */ | |
7042 | register STDCHAR *ptr; | |
7043 | STRLEN bpx; | |
7044 | I32 shortbuffered; | |
7045 | ||
16660edb | 7046 | #if defined(VMS) && defined(PERLIO_IS_STDIO) |
7047 | /* An ungetc()d char is handled separately from the regular | |
7048 | * buffer, so we getc() it back out and stuff it in the buffer. | |
7049 | */ | |
7050 | i = PerlIO_getc(fp); | |
7051 | if (i == EOF) return 0; | |
7052 | *(--((*fp)->_ptr)) = (unsigned char) i; | |
7053 | (*fp)->_cnt++; | |
7054 | #endif | |
c07a80fd | 7055 | |
c2960299 | 7056 | /* Here is some breathtakingly efficient cheating */ |
c07a80fd | 7057 | |
a20bf0c3 | 7058 | cnt = PerlIO_get_cnt(fp); /* get count into register */ |
e468d35b | 7059 | /* make sure we have the room */ |
7a5fa8a2 | 7060 | if ((I32)(SvLEN(sv) - append) <= cnt + 1) { |
e468d35b | 7061 | /* Not room for all of it |
7a5fa8a2 | 7062 | if we are looking for a separator and room for some |
e468d35b NIS |
7063 | */ |
7064 | if (rslen && cnt > 80 && (I32)SvLEN(sv) > append) { | |
7a5fa8a2 | 7065 | /* just process what we have room for */ |
79072805 LW |
7066 | shortbuffered = cnt - SvLEN(sv) + append + 1; |
7067 | cnt -= shortbuffered; | |
7068 | } | |
7069 | else { | |
7070 | shortbuffered = 0; | |
bbce6d69 | 7071 | /* remember that cnt can be negative */ |
eb160463 | 7072 | SvGROW(sv, (STRLEN)(append + (cnt <= 0 ? 2 : (cnt + 1)))); |
79072805 LW |
7073 | } |
7074 | } | |
7a5fa8a2 | 7075 | else |
79072805 | 7076 | shortbuffered = 0; |
c07a80fd | 7077 | bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */ |
a20bf0c3 | 7078 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); |
16660edb | 7079 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7080 | "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
16660edb | 7081 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
ba7abf9d | 7082 | "Screamer: entering: PerlIO * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 7083 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 7084 | PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0))); |
79072805 LW |
7085 | for (;;) { |
7086 | screamer: | |
93a17b20 | 7087 | if (cnt > 0) { |
c07a80fd | 7088 | if (rslen) { |
760ac839 LW |
7089 | while (cnt > 0) { /* this | eat */ |
7090 | cnt--; | |
c07a80fd | 7091 | if ((*bp++ = *ptr++) == rslast) /* really | dust */ |
7092 | goto thats_all_folks; /* screams | sed :-) */ | |
7093 | } | |
7094 | } | |
7095 | else { | |
1c846c1f NIS |
7096 | Copy(ptr, bp, cnt, char); /* this | eat */ |
7097 | bp += cnt; /* screams | dust */ | |
c07a80fd | 7098 | ptr += cnt; /* louder | sed :-) */ |
a5f75d66 | 7099 | cnt = 0; |
93a17b20 | 7100 | } |
79072805 LW |
7101 | } |
7102 | ||
748a9306 | 7103 | if (shortbuffered) { /* oh well, must extend */ |
79072805 LW |
7104 | cnt = shortbuffered; |
7105 | shortbuffered = 0; | |
c07a80fd | 7106 | bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */ |
79072805 LW |
7107 | SvCUR_set(sv, bpx); |
7108 | SvGROW(sv, SvLEN(sv) + append + cnt + 2); | |
c07a80fd | 7109 | bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */ |
79072805 LW |
7110 | continue; |
7111 | } | |
7112 | ||
16660edb | 7113 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 GS |
7114 | "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n", |
7115 | PTR2UV(ptr),(long)cnt)); | |
cc00df79 | 7116 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* deregisterize cnt and ptr */ |
ba7abf9d | 7117 | #if 0 |
16660edb | 7118 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7119 | "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 7120 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 7121 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 7122 | #endif |
1c846c1f | 7123 | /* This used to call 'filbuf' in stdio form, but as that behaves like |
774d564b | 7124 | getc when cnt <= 0 we use PerlIO_getc here to avoid introducing |
7125 | another abstraction. */ | |
760ac839 | 7126 | i = PerlIO_getc(fp); /* get more characters */ |
ba7abf9d | 7127 | #if 0 |
16660edb | 7128 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7129 | "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 7130 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 7131 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 7132 | #endif |
a20bf0c3 JH |
7133 | cnt = PerlIO_get_cnt(fp); |
7134 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */ | |
16660edb | 7135 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7136 | "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
79072805 | 7137 | |
748a9306 LW |
7138 | if (i == EOF) /* all done for ever? */ |
7139 | goto thats_really_all_folks; | |
7140 | ||
c07a80fd | 7141 | bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */ |
79072805 LW |
7142 | SvCUR_set(sv, bpx); |
7143 | SvGROW(sv, bpx + cnt + 2); | |
c07a80fd | 7144 | bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */ |
7145 | ||
eb160463 | 7146 | *bp++ = (STDCHAR)i; /* store character from PerlIO_getc */ |
79072805 | 7147 | |
c07a80fd | 7148 | if (rslen && (STDCHAR)i == rslast) /* all done for now? */ |
79072805 | 7149 | goto thats_all_folks; |
79072805 LW |
7150 | } |
7151 | ||
7152 | thats_all_folks: | |
eb160463 | 7153 | if ((rslen > 1 && (STRLEN)(bp - (STDCHAR*)SvPVX(sv)) < rslen) || |
36477c24 | 7154 | memNE((char*)bp - rslen, rsptr, rslen)) |
760ac839 | 7155 | goto screamer; /* go back to the fray */ |
79072805 LW |
7156 | thats_really_all_folks: |
7157 | if (shortbuffered) | |
7158 | cnt += shortbuffered; | |
16660edb | 7159 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7160 | "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
cc00df79 | 7161 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* put these back or we're in trouble */ |
16660edb | 7162 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7163 | "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 7164 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 7165 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
79072805 | 7166 | *bp = '\0'; |
760ac839 | 7167 | SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */ |
16660edb | 7168 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
fb73857a | 7169 | "Screamer: done, len=%ld, string=|%.*s|\n", |
7170 | (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv))); | |
760ac839 LW |
7171 | } |
7172 | else | |
79072805 | 7173 | { |
6edd2cd5 JH |
7174 | /*The big, slow, and stupid way. */ |
7175 | ||
7176 | /* Any stack-challenged places. */ | |
33d5f59c | 7177 | #if defined(EPOC) |
6edd2cd5 JH |
7178 | /* EPOC: need to work around SDK features. * |
7179 | * On WINS: MS VC5 generates calls to _chkstk, * | |
7180 | * if a "large" stack frame is allocated. * | |
7181 | * gcc on MARM does not generate calls like these. */ | |
7182 | # define USEHEAPINSTEADOFSTACK | |
7183 | #endif | |
7184 | ||
7185 | #ifdef USEHEAPINSTEADOFSTACK | |
7186 | STDCHAR *buf = 0; | |
7187 | New(0, buf, 8192, STDCHAR); | |
7188 | assert(buf); | |
4d2c4e07 | 7189 | #else |
6edd2cd5 | 7190 | STDCHAR buf[8192]; |
4d2c4e07 | 7191 | #endif |
79072805 | 7192 | |
760ac839 | 7193 | screamer2: |
c07a80fd | 7194 | if (rslen) { |
760ac839 LW |
7195 | register STDCHAR *bpe = buf + sizeof(buf); |
7196 | bp = buf; | |
eb160463 | 7197 | while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = (STDCHAR)i) != rslast && bp < bpe) |
760ac839 LW |
7198 | ; /* keep reading */ |
7199 | cnt = bp - buf; | |
c07a80fd | 7200 | } |
7201 | else { | |
760ac839 | 7202 | cnt = PerlIO_read(fp,(char*)buf, sizeof(buf)); |
16660edb | 7203 | /* Accomodate broken VAXC compiler, which applies U8 cast to |
7204 | * both args of ?: operator, causing EOF to change into 255 | |
7205 | */ | |
37be0adf | 7206 | if (cnt > 0) |
cbe9e203 JH |
7207 | i = (U8)buf[cnt - 1]; |
7208 | else | |
37be0adf | 7209 | i = EOF; |
c07a80fd | 7210 | } |
79072805 | 7211 | |
cbe9e203 JH |
7212 | if (cnt < 0) |
7213 | cnt = 0; /* we do need to re-set the sv even when cnt <= 0 */ | |
7214 | if (append) | |
7215 | sv_catpvn(sv, (char *) buf, cnt); | |
7216 | else | |
7217 | sv_setpvn(sv, (char *) buf, cnt); | |
c07a80fd | 7218 | |
7219 | if (i != EOF && /* joy */ | |
7220 | (!rslen || | |
7221 | SvCUR(sv) < rslen || | |
36477c24 | 7222 | memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen))) |
79072805 LW |
7223 | { |
7224 | append = -1; | |
63e4d877 CS |
7225 | /* |
7226 | * If we're reading from a TTY and we get a short read, | |
7227 | * indicating that the user hit his EOF character, we need | |
7228 | * to notice it now, because if we try to read from the TTY | |
7229 | * again, the EOF condition will disappear. | |
7230 | * | |
7231 | * The comparison of cnt to sizeof(buf) is an optimization | |
7232 | * that prevents unnecessary calls to feof(). | |
7233 | * | |
7234 | * - jik 9/25/96 | |
7235 | */ | |
7236 | if (!(cnt < sizeof(buf) && PerlIO_eof(fp))) | |
7237 | goto screamer2; | |
79072805 | 7238 | } |
6edd2cd5 JH |
7239 | |
7240 | #ifdef USEHEAPINSTEADOFSTACK | |
7241 | Safefree(buf); | |
7242 | #endif | |
79072805 LW |
7243 | } |
7244 | ||
8bfdd7d9 | 7245 | if (rspara) { /* have to do this both before and after */ |
c07a80fd | 7246 | while (i != EOF) { /* to make sure file boundaries work right */ |
760ac839 | 7247 | i = PerlIO_getc(fp); |
79072805 | 7248 | if (i != '\n') { |
760ac839 | 7249 | PerlIO_ungetc(fp,i); |
79072805 LW |
7250 | break; |
7251 | } | |
7252 | } | |
7253 | } | |
c07a80fd | 7254 | |
efd8b2ba | 7255 | return_string_or_null: |
c07a80fd | 7256 | return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch; |
79072805 LW |
7257 | } |
7258 | ||
954c1994 GS |
7259 | /* |
7260 | =for apidoc sv_inc | |
7261 | ||
645c22ef DM |
7262 | Auto-increment of the value in the SV, doing string to numeric conversion |
7263 | if necessary. Handles 'get' magic. | |
954c1994 GS |
7264 | |
7265 | =cut | |
7266 | */ | |
7267 | ||
79072805 | 7268 | void |
864dbfa3 | 7269 | Perl_sv_inc(pTHX_ register SV *sv) |
79072805 LW |
7270 | { |
7271 | register char *d; | |
463ee0b2 | 7272 | int flags; |
79072805 LW |
7273 | |
7274 | if (!sv) | |
7275 | return; | |
b23a5f78 GB |
7276 | if (SvGMAGICAL(sv)) |
7277 | mg_get(sv); | |
ed6116ce | 7278 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
7279 | if (SvIsCOW(sv)) |
7280 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 7281 | if (SvREADONLY(sv)) { |
923e4eb5 | 7282 | if (IN_PERL_RUNTIME) |
cea2e8a9 | 7283 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 7284 | } |
a0d0e21e | 7285 | if (SvROK(sv)) { |
b5be31e9 | 7286 | IV i; |
9e7bc3e8 JD |
7287 | if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) |
7288 | return; | |
56431972 | 7289 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
7290 | sv_unref(sv); |
7291 | sv_setiv(sv, i); | |
a0d0e21e | 7292 | } |
ed6116ce | 7293 | } |
8990e307 | 7294 | flags = SvFLAGS(sv); |
28e5dec8 JH |
7295 | if ((flags & (SVp_NOK|SVp_IOK)) == SVp_NOK) { |
7296 | /* It's (privately or publicly) a float, but not tested as an | |
7297 | integer, so test it to see. */ | |
d460ef45 | 7298 | (void) SvIV(sv); |
28e5dec8 JH |
7299 | flags = SvFLAGS(sv); |
7300 | } | |
7301 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { | |
7302 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 7303 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 7304 | oops_its_int: |
59d8ce62 | 7305 | #endif |
25da4f38 IZ |
7306 | if (SvIsUV(sv)) { |
7307 | if (SvUVX(sv) == UV_MAX) | |
a1e868e7 | 7308 | sv_setnv(sv, UV_MAX_P1); |
25da4f38 IZ |
7309 | else |
7310 | (void)SvIOK_only_UV(sv); | |
7311 | ++SvUVX(sv); | |
7312 | } else { | |
7313 | if (SvIVX(sv) == IV_MAX) | |
28e5dec8 | 7314 | sv_setuv(sv, (UV)IV_MAX + 1); |
25da4f38 IZ |
7315 | else { |
7316 | (void)SvIOK_only(sv); | |
7317 | ++SvIVX(sv); | |
1c846c1f | 7318 | } |
55497cff | 7319 | } |
79072805 LW |
7320 | return; |
7321 | } | |
28e5dec8 JH |
7322 | if (flags & SVp_NOK) { |
7323 | (void)SvNOK_only(sv); | |
7324 | SvNVX(sv) += 1.0; | |
7325 | return; | |
7326 | } | |
7327 | ||
8990e307 | 7328 | if (!(flags & SVp_POK) || !*SvPVX(sv)) { |
28e5dec8 JH |
7329 | if ((flags & SVTYPEMASK) < SVt_PVIV) |
7330 | sv_upgrade(sv, SVt_IV); | |
7331 | (void)SvIOK_only(sv); | |
7332 | SvIVX(sv) = 1; | |
79072805 LW |
7333 | return; |
7334 | } | |
463ee0b2 | 7335 | d = SvPVX(sv); |
79072805 LW |
7336 | while (isALPHA(*d)) d++; |
7337 | while (isDIGIT(*d)) d++; | |
7338 | if (*d) { | |
28e5dec8 | 7339 | #ifdef PERL_PRESERVE_IVUV |
d1be9408 | 7340 | /* Got to punt this as an integer if needs be, but we don't issue |
28e5dec8 JH |
7341 | warnings. Probably ought to make the sv_iv_please() that does |
7342 | the conversion if possible, and silently. */ | |
c2988b20 | 7343 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
7344 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
7345 | /* Need to try really hard to see if it's an integer. | |
7346 | 9.22337203685478e+18 is an integer. | |
7347 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
7348 | so $a="9.22337203685478e+18"; $a+0; $a++ | |
7349 | needs to be the same as $a="9.22337203685478e+18"; $a++ | |
7350 | or we go insane. */ | |
d460ef45 | 7351 | |
28e5dec8 JH |
7352 | (void) sv_2iv(sv); |
7353 | if (SvIOK(sv)) | |
7354 | goto oops_its_int; | |
7355 | ||
7356 | /* sv_2iv *should* have made this an NV */ | |
7357 | if (flags & SVp_NOK) { | |
7358 | (void)SvNOK_only(sv); | |
7359 | SvNVX(sv) += 1.0; | |
7360 | return; | |
7361 | } | |
7362 | /* I don't think we can get here. Maybe I should assert this | |
7363 | And if we do get here I suspect that sv_setnv will croak. NWC | |
7364 | Fall through. */ | |
7365 | #if defined(USE_LONG_DOUBLE) | |
7366 | 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", | |
7367 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); | |
7368 | #else | |
1779d84d | 7369 | 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 |
7370 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); |
7371 | #endif | |
7372 | } | |
7373 | #endif /* PERL_PRESERVE_IVUV */ | |
7374 | sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); | |
79072805 LW |
7375 | return; |
7376 | } | |
7377 | d--; | |
463ee0b2 | 7378 | while (d >= SvPVX(sv)) { |
79072805 LW |
7379 | if (isDIGIT(*d)) { |
7380 | if (++*d <= '9') | |
7381 | return; | |
7382 | *(d--) = '0'; | |
7383 | } | |
7384 | else { | |
9d116dd7 JH |
7385 | #ifdef EBCDIC |
7386 | /* MKS: The original code here died if letters weren't consecutive. | |
7387 | * at least it didn't have to worry about non-C locales. The | |
7388 | * new code assumes that ('z'-'a')==('Z'-'A'), letters are | |
1c846c1f | 7389 | * arranged in order (although not consecutively) and that only |
9d116dd7 JH |
7390 | * [A-Za-z] are accepted by isALPHA in the C locale. |
7391 | */ | |
7392 | if (*d != 'z' && *d != 'Z') { | |
7393 | do { ++*d; } while (!isALPHA(*d)); | |
7394 | return; | |
7395 | } | |
7396 | *(d--) -= 'z' - 'a'; | |
7397 | #else | |
79072805 LW |
7398 | ++*d; |
7399 | if (isALPHA(*d)) | |
7400 | return; | |
7401 | *(d--) -= 'z' - 'a' + 1; | |
9d116dd7 | 7402 | #endif |
79072805 LW |
7403 | } |
7404 | } | |
7405 | /* oh,oh, the number grew */ | |
7406 | SvGROW(sv, SvCUR(sv) + 2); | |
7407 | SvCUR(sv)++; | |
463ee0b2 | 7408 | for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--) |
79072805 LW |
7409 | *d = d[-1]; |
7410 | if (isDIGIT(d[1])) | |
7411 | *d = '1'; | |
7412 | else | |
7413 | *d = d[1]; | |
7414 | } | |
7415 | ||
954c1994 GS |
7416 | /* |
7417 | =for apidoc sv_dec | |
7418 | ||
645c22ef DM |
7419 | Auto-decrement of the value in the SV, doing string to numeric conversion |
7420 | if necessary. Handles 'get' magic. | |
954c1994 GS |
7421 | |
7422 | =cut | |
7423 | */ | |
7424 | ||
79072805 | 7425 | void |
864dbfa3 | 7426 | Perl_sv_dec(pTHX_ register SV *sv) |
79072805 | 7427 | { |
463ee0b2 LW |
7428 | int flags; |
7429 | ||
79072805 LW |
7430 | if (!sv) |
7431 | return; | |
b23a5f78 GB |
7432 | if (SvGMAGICAL(sv)) |
7433 | mg_get(sv); | |
ed6116ce | 7434 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
7435 | if (SvIsCOW(sv)) |
7436 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 7437 | if (SvREADONLY(sv)) { |
923e4eb5 | 7438 | if (IN_PERL_RUNTIME) |
cea2e8a9 | 7439 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 7440 | } |
a0d0e21e | 7441 | if (SvROK(sv)) { |
b5be31e9 | 7442 | IV i; |
9e7bc3e8 JD |
7443 | if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) |
7444 | return; | |
56431972 | 7445 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
7446 | sv_unref(sv); |
7447 | sv_setiv(sv, i); | |
a0d0e21e | 7448 | } |
ed6116ce | 7449 | } |
28e5dec8 JH |
7450 | /* Unlike sv_inc we don't have to worry about string-never-numbers |
7451 | and keeping them magic. But we mustn't warn on punting */ | |
8990e307 | 7452 | flags = SvFLAGS(sv); |
28e5dec8 JH |
7453 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { |
7454 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 7455 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 7456 | oops_its_int: |
59d8ce62 | 7457 | #endif |
25da4f38 IZ |
7458 | if (SvIsUV(sv)) { |
7459 | if (SvUVX(sv) == 0) { | |
7460 | (void)SvIOK_only(sv); | |
7461 | SvIVX(sv) = -1; | |
7462 | } | |
7463 | else { | |
7464 | (void)SvIOK_only_UV(sv); | |
7465 | --SvUVX(sv); | |
1c846c1f | 7466 | } |
25da4f38 IZ |
7467 | } else { |
7468 | if (SvIVX(sv) == IV_MIN) | |
65202027 | 7469 | sv_setnv(sv, (NV)IV_MIN - 1.0); |
25da4f38 IZ |
7470 | else { |
7471 | (void)SvIOK_only(sv); | |
7472 | --SvIVX(sv); | |
1c846c1f | 7473 | } |
55497cff | 7474 | } |
7475 | return; | |
7476 | } | |
28e5dec8 JH |
7477 | if (flags & SVp_NOK) { |
7478 | SvNVX(sv) -= 1.0; | |
7479 | (void)SvNOK_only(sv); | |
7480 | return; | |
7481 | } | |
8990e307 | 7482 | if (!(flags & SVp_POK)) { |
4633a7c4 LW |
7483 | if ((flags & SVTYPEMASK) < SVt_PVNV) |
7484 | sv_upgrade(sv, SVt_NV); | |
463ee0b2 | 7485 | SvNVX(sv) = -1.0; |
a0d0e21e | 7486 | (void)SvNOK_only(sv); |
79072805 LW |
7487 | return; |
7488 | } | |
28e5dec8 JH |
7489 | #ifdef PERL_PRESERVE_IVUV |
7490 | { | |
c2988b20 | 7491 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
7492 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
7493 | /* Need to try really hard to see if it's an integer. | |
7494 | 9.22337203685478e+18 is an integer. | |
7495 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
7496 | so $a="9.22337203685478e+18"; $a+0; $a-- | |
7497 | needs to be the same as $a="9.22337203685478e+18"; $a-- | |
7498 | or we go insane. */ | |
d460ef45 | 7499 | |
28e5dec8 JH |
7500 | (void) sv_2iv(sv); |
7501 | if (SvIOK(sv)) | |
7502 | goto oops_its_int; | |
7503 | ||
7504 | /* sv_2iv *should* have made this an NV */ | |
7505 | if (flags & SVp_NOK) { | |
7506 | (void)SvNOK_only(sv); | |
7507 | SvNVX(sv) -= 1.0; | |
7508 | return; | |
7509 | } | |
7510 | /* I don't think we can get here. Maybe I should assert this | |
7511 | And if we do get here I suspect that sv_setnv will croak. NWC | |
7512 | Fall through. */ | |
7513 | #if defined(USE_LONG_DOUBLE) | |
7514 | 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", | |
7515 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); | |
7516 | #else | |
1779d84d | 7517 | 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 |
7518 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); |
7519 | #endif | |
7520 | } | |
7521 | } | |
7522 | #endif /* PERL_PRESERVE_IVUV */ | |
097ee67d | 7523 | sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */ |
79072805 LW |
7524 | } |
7525 | ||
954c1994 GS |
7526 | /* |
7527 | =for apidoc sv_mortalcopy | |
7528 | ||
645c22ef | 7529 | Creates a new SV which is a copy of the original SV (using C<sv_setsv>). |
d4236ebc DM |
7530 | The new SV is marked as mortal. It will be destroyed "soon", either by an |
7531 | explicit call to FREETMPS, or by an implicit call at places such as | |
7532 | statement boundaries. See also C<sv_newmortal> and C<sv_2mortal>. | |
954c1994 GS |
7533 | |
7534 | =cut | |
7535 | */ | |
7536 | ||
79072805 LW |
7537 | /* Make a string that will exist for the duration of the expression |
7538 | * evaluation. Actually, it may have to last longer than that, but | |
7539 | * hopefully we won't free it until it has been assigned to a | |
7540 | * permanent location. */ | |
7541 | ||
7542 | SV * | |
864dbfa3 | 7543 | Perl_sv_mortalcopy(pTHX_ SV *oldstr) |
79072805 | 7544 | { |
463ee0b2 | 7545 | register SV *sv; |
b881518d | 7546 | |
4561caa4 | 7547 | new_SV(sv); |
79072805 | 7548 | sv_setsv(sv,oldstr); |
677b06e3 GS |
7549 | EXTEND_MORTAL(1); |
7550 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 LW |
7551 | SvTEMP_on(sv); |
7552 | return sv; | |
7553 | } | |
7554 | ||
954c1994 GS |
7555 | /* |
7556 | =for apidoc sv_newmortal | |
7557 | ||
645c22ef | 7558 | Creates a new null SV which is mortal. The reference count of the SV is |
d4236ebc DM |
7559 | set to 1. It will be destroyed "soon", either by an explicit call to |
7560 | FREETMPS, or by an implicit call at places such as statement boundaries. | |
7561 | See also C<sv_mortalcopy> and C<sv_2mortal>. | |
954c1994 GS |
7562 | |
7563 | =cut | |
7564 | */ | |
7565 | ||
8990e307 | 7566 | SV * |
864dbfa3 | 7567 | Perl_sv_newmortal(pTHX) |
8990e307 LW |
7568 | { |
7569 | register SV *sv; | |
7570 | ||
4561caa4 | 7571 | new_SV(sv); |
8990e307 | 7572 | SvFLAGS(sv) = SVs_TEMP; |
677b06e3 GS |
7573 | EXTEND_MORTAL(1); |
7574 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
79072805 LW |
7575 | return sv; |
7576 | } | |
7577 | ||
954c1994 GS |
7578 | /* |
7579 | =for apidoc sv_2mortal | |
7580 | ||
d4236ebc DM |
7581 | Marks an existing SV as mortal. The SV will be destroyed "soon", either |
7582 | by an explicit call to FREETMPS, or by an implicit call at places such as | |
37d2ac18 NC |
7583 | statement boundaries. SvTEMP() is turned on which means that the SV's |
7584 | string buffer can be "stolen" if this SV is copied. See also C<sv_newmortal> | |
7585 | and C<sv_mortalcopy>. | |
954c1994 GS |
7586 | |
7587 | =cut | |
7588 | */ | |
7589 | ||
79072805 | 7590 | SV * |
864dbfa3 | 7591 | Perl_sv_2mortal(pTHX_ register SV *sv) |
79072805 LW |
7592 | { |
7593 | if (!sv) | |
7594 | return sv; | |
d689ffdd | 7595 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) |
11162842 | 7596 | return sv; |
677b06e3 GS |
7597 | EXTEND_MORTAL(1); |
7598 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 | 7599 | SvTEMP_on(sv); |
79072805 LW |
7600 | return sv; |
7601 | } | |
7602 | ||
954c1994 GS |
7603 | /* |
7604 | =for apidoc newSVpv | |
7605 | ||
7606 | Creates a new SV and copies a string into it. The reference count for the | |
7607 | SV is set to 1. If C<len> is zero, Perl will compute the length using | |
7608 | strlen(). For efficiency, consider using C<newSVpvn> instead. | |
7609 | ||
7610 | =cut | |
7611 | */ | |
7612 | ||
79072805 | 7613 | SV * |
864dbfa3 | 7614 | Perl_newSVpv(pTHX_ const char *s, STRLEN len) |
79072805 | 7615 | { |
463ee0b2 | 7616 | register SV *sv; |
79072805 | 7617 | |
4561caa4 | 7618 | new_SV(sv); |
79072805 LW |
7619 | if (!len) |
7620 | len = strlen(s); | |
7621 | sv_setpvn(sv,s,len); | |
7622 | return sv; | |
7623 | } | |
7624 | ||
954c1994 GS |
7625 | /* |
7626 | =for apidoc newSVpvn | |
7627 | ||
7628 | Creates a new SV and copies a string into it. The reference count for the | |
1c846c1f | 7629 | SV is set to 1. Note that if C<len> is zero, Perl will create a zero length |
954c1994 | 7630 | string. You are responsible for ensuring that the source string is at least |
9e09f5f2 | 7631 | C<len> bytes long. If the C<s> argument is NULL the new SV will be undefined. |
954c1994 GS |
7632 | |
7633 | =cut | |
7634 | */ | |
7635 | ||
9da1e3b5 | 7636 | SV * |
864dbfa3 | 7637 | Perl_newSVpvn(pTHX_ const char *s, STRLEN len) |
9da1e3b5 MUN |
7638 | { |
7639 | register SV *sv; | |
7640 | ||
7641 | new_SV(sv); | |
9da1e3b5 MUN |
7642 | sv_setpvn(sv,s,len); |
7643 | return sv; | |
7644 | } | |
7645 | ||
1c846c1f NIS |
7646 | /* |
7647 | =for apidoc newSVpvn_share | |
7648 | ||
645c22ef DM |
7649 | Creates a new SV with its SvPVX pointing to a shared string in the string |
7650 | table. If the string does not already exist in the table, it is created | |
7651 | first. Turns on READONLY and FAKE. The string's hash is stored in the UV | |
7652 | slot of the SV; if the C<hash> parameter is non-zero, that value is used; | |
7653 | otherwise the hash is computed. The idea here is that as the string table | |
7654 | is used for shared hash keys these strings will have SvPVX == HeKEY and | |
7655 | hash lookup will avoid string compare. | |
1c846c1f NIS |
7656 | |
7657 | =cut | |
7658 | */ | |
7659 | ||
7660 | SV * | |
c3654f1a | 7661 | Perl_newSVpvn_share(pTHX_ const char *src, I32 len, U32 hash) |
1c846c1f NIS |
7662 | { |
7663 | register SV *sv; | |
c3654f1a IH |
7664 | bool is_utf8 = FALSE; |
7665 | if (len < 0) { | |
77caf834 | 7666 | STRLEN tmplen = -len; |
c3654f1a | 7667 | is_utf8 = TRUE; |
75a54232 JH |
7668 | /* See the note in hv.c:hv_fetch() --jhi */ |
7669 | src = (char*)bytes_from_utf8((U8*)src, &tmplen, &is_utf8); | |
7670 | len = tmplen; | |
7671 | } | |
1c846c1f | 7672 | if (!hash) |
5afd6d42 | 7673 | PERL_HASH(hash, src, len); |
1c846c1f NIS |
7674 | new_SV(sv); |
7675 | sv_upgrade(sv, SVt_PVIV); | |
c3654f1a | 7676 | SvPVX(sv) = sharepvn(src, is_utf8?-len:len, hash); |
1c846c1f NIS |
7677 | SvCUR(sv) = len; |
7678 | SvUVX(sv) = hash; | |
7679 | SvLEN(sv) = 0; | |
7680 | SvREADONLY_on(sv); | |
7681 | SvFAKE_on(sv); | |
7682 | SvPOK_on(sv); | |
c3654f1a IH |
7683 | if (is_utf8) |
7684 | SvUTF8_on(sv); | |
1c846c1f NIS |
7685 | return sv; |
7686 | } | |
7687 | ||
645c22ef | 7688 | |
cea2e8a9 | 7689 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
7690 | |
7691 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
7692 | * version of the main function, (which may itself be aliased to us). | |
7693 | * Don't access this version directly. | |
7694 | */ | |
7695 | ||
46fc3d4c | 7696 | SV * |
cea2e8a9 | 7697 | Perl_newSVpvf_nocontext(const char* pat, ...) |
46fc3d4c | 7698 | { |
cea2e8a9 | 7699 | dTHX; |
46fc3d4c | 7700 | register SV *sv; |
7701 | va_list args; | |
46fc3d4c | 7702 | va_start(args, pat); |
c5be433b | 7703 | sv = vnewSVpvf(pat, &args); |
46fc3d4c | 7704 | va_end(args); |
7705 | return sv; | |
7706 | } | |
cea2e8a9 | 7707 | #endif |
46fc3d4c | 7708 | |
954c1994 GS |
7709 | /* |
7710 | =for apidoc newSVpvf | |
7711 | ||
645c22ef | 7712 | Creates a new SV and initializes it with the string formatted like |
954c1994 GS |
7713 | C<sprintf>. |
7714 | ||
7715 | =cut | |
7716 | */ | |
7717 | ||
cea2e8a9 GS |
7718 | SV * |
7719 | Perl_newSVpvf(pTHX_ const char* pat, ...) | |
7720 | { | |
7721 | register SV *sv; | |
7722 | va_list args; | |
cea2e8a9 | 7723 | va_start(args, pat); |
c5be433b | 7724 | sv = vnewSVpvf(pat, &args); |
cea2e8a9 GS |
7725 | va_end(args); |
7726 | return sv; | |
7727 | } | |
46fc3d4c | 7728 | |
645c22ef DM |
7729 | /* backend for newSVpvf() and newSVpvf_nocontext() */ |
7730 | ||
79072805 | 7731 | SV * |
c5be433b GS |
7732 | Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args) |
7733 | { | |
7734 | register SV *sv; | |
7735 | new_SV(sv); | |
7736 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
7737 | return sv; | |
7738 | } | |
7739 | ||
954c1994 GS |
7740 | /* |
7741 | =for apidoc newSVnv | |
7742 | ||
7743 | Creates a new SV and copies a floating point value into it. | |
7744 | The reference count for the SV is set to 1. | |
7745 | ||
7746 | =cut | |
7747 | */ | |
7748 | ||
c5be433b | 7749 | SV * |
65202027 | 7750 | Perl_newSVnv(pTHX_ NV n) |
79072805 | 7751 | { |
463ee0b2 | 7752 | register SV *sv; |
79072805 | 7753 | |
4561caa4 | 7754 | new_SV(sv); |
79072805 LW |
7755 | sv_setnv(sv,n); |
7756 | return sv; | |
7757 | } | |
7758 | ||
954c1994 GS |
7759 | /* |
7760 | =for apidoc newSViv | |
7761 | ||
7762 | Creates a new SV and copies an integer into it. The reference count for the | |
7763 | SV is set to 1. | |
7764 | ||
7765 | =cut | |
7766 | */ | |
7767 | ||
79072805 | 7768 | SV * |
864dbfa3 | 7769 | Perl_newSViv(pTHX_ IV i) |
79072805 | 7770 | { |
463ee0b2 | 7771 | register SV *sv; |
79072805 | 7772 | |
4561caa4 | 7773 | new_SV(sv); |
79072805 LW |
7774 | sv_setiv(sv,i); |
7775 | return sv; | |
7776 | } | |
7777 | ||
954c1994 | 7778 | /* |
1a3327fb JH |
7779 | =for apidoc newSVuv |
7780 | ||
7781 | Creates a new SV and copies an unsigned integer into it. | |
7782 | The reference count for the SV is set to 1. | |
7783 | ||
7784 | =cut | |
7785 | */ | |
7786 | ||
7787 | SV * | |
7788 | Perl_newSVuv(pTHX_ UV u) | |
7789 | { | |
7790 | register SV *sv; | |
7791 | ||
7792 | new_SV(sv); | |
7793 | sv_setuv(sv,u); | |
7794 | return sv; | |
7795 | } | |
7796 | ||
7797 | /* | |
954c1994 GS |
7798 | =for apidoc newRV_noinc |
7799 | ||
7800 | Creates an RV wrapper for an SV. The reference count for the original | |
7801 | SV is B<not> incremented. | |
7802 | ||
7803 | =cut | |
7804 | */ | |
7805 | ||
2304df62 | 7806 | SV * |
864dbfa3 | 7807 | Perl_newRV_noinc(pTHX_ SV *tmpRef) |
2304df62 AD |
7808 | { |
7809 | register SV *sv; | |
7810 | ||
4561caa4 | 7811 | new_SV(sv); |
2304df62 | 7812 | sv_upgrade(sv, SVt_RV); |
76e3520e | 7813 | SvTEMP_off(tmpRef); |
d689ffdd | 7814 | SvRV(sv) = tmpRef; |
2304df62 | 7815 | SvROK_on(sv); |
2304df62 AD |
7816 | return sv; |
7817 | } | |
7818 | ||
ff276b08 | 7819 | /* newRV_inc is the official function name to use now. |
645c22ef DM |
7820 | * newRV_inc is in fact #defined to newRV in sv.h |
7821 | */ | |
7822 | ||
5f05dabc | 7823 | SV * |
864dbfa3 | 7824 | Perl_newRV(pTHX_ SV *tmpRef) |
5f05dabc | 7825 | { |
5f6447b6 | 7826 | return newRV_noinc(SvREFCNT_inc(tmpRef)); |
5f05dabc | 7827 | } |
5f05dabc | 7828 | |
954c1994 GS |
7829 | /* |
7830 | =for apidoc newSVsv | |
7831 | ||
7832 | Creates a new SV which is an exact duplicate of the original SV. | |
645c22ef | 7833 | (Uses C<sv_setsv>). |
954c1994 GS |
7834 | |
7835 | =cut | |
7836 | */ | |
7837 | ||
79072805 | 7838 | SV * |
864dbfa3 | 7839 | Perl_newSVsv(pTHX_ register SV *old) |
79072805 | 7840 | { |
463ee0b2 | 7841 | register SV *sv; |
79072805 LW |
7842 | |
7843 | if (!old) | |
7844 | return Nullsv; | |
8990e307 | 7845 | if (SvTYPE(old) == SVTYPEMASK) { |
0453d815 | 7846 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 7847 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "semi-panic: attempt to dup freed string"); |
79072805 LW |
7848 | return Nullsv; |
7849 | } | |
4561caa4 | 7850 | new_SV(sv); |
ff68c719 | 7851 | if (SvTEMP(old)) { |
7852 | SvTEMP_off(old); | |
463ee0b2 | 7853 | sv_setsv(sv,old); |
ff68c719 | 7854 | SvTEMP_on(old); |
79072805 LW |
7855 | } |
7856 | else | |
463ee0b2 LW |
7857 | sv_setsv(sv,old); |
7858 | return sv; | |
79072805 LW |
7859 | } |
7860 | ||
645c22ef DM |
7861 | /* |
7862 | =for apidoc sv_reset | |
7863 | ||
7864 | Underlying implementation for the C<reset> Perl function. | |
7865 | Note that the perl-level function is vaguely deprecated. | |
7866 | ||
7867 | =cut | |
7868 | */ | |
7869 | ||
79072805 | 7870 | void |
864dbfa3 | 7871 | Perl_sv_reset(pTHX_ register char *s, HV *stash) |
79072805 LW |
7872 | { |
7873 | register HE *entry; | |
7874 | register GV *gv; | |
7875 | register SV *sv; | |
7876 | register I32 i; | |
7877 | register PMOP *pm; | |
7878 | register I32 max; | |
4802d5d7 | 7879 | char todo[PERL_UCHAR_MAX+1]; |
79072805 | 7880 | |
49d8d3a1 MB |
7881 | if (!stash) |
7882 | return; | |
7883 | ||
79072805 LW |
7884 | if (!*s) { /* reset ?? searches */ |
7885 | for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) { | |
48c036b1 | 7886 | pm->op_pmdynflags &= ~PMdf_USED; |
79072805 LW |
7887 | } |
7888 | return; | |
7889 | } | |
7890 | ||
7891 | /* reset variables */ | |
7892 | ||
7893 | if (!HvARRAY(stash)) | |
7894 | return; | |
463ee0b2 LW |
7895 | |
7896 | Zero(todo, 256, char); | |
79072805 | 7897 | while (*s) { |
4802d5d7 | 7898 | i = (unsigned char)*s; |
79072805 LW |
7899 | if (s[1] == '-') { |
7900 | s += 2; | |
7901 | } | |
4802d5d7 | 7902 | max = (unsigned char)*s++; |
79072805 | 7903 | for ( ; i <= max; i++) { |
463ee0b2 LW |
7904 | todo[i] = 1; |
7905 | } | |
a0d0e21e | 7906 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
79072805 | 7907 | for (entry = HvARRAY(stash)[i]; |
9e35f4b3 GS |
7908 | entry; |
7909 | entry = HeNEXT(entry)) | |
7910 | { | |
1edc1566 | 7911 | if (!todo[(U8)*HeKEY(entry)]) |
463ee0b2 | 7912 | continue; |
1edc1566 | 7913 | gv = (GV*)HeVAL(entry); |
79072805 | 7914 | sv = GvSV(gv); |
9e35f4b3 GS |
7915 | if (SvTHINKFIRST(sv)) { |
7916 | if (!SvREADONLY(sv) && SvROK(sv)) | |
7917 | sv_unref(sv); | |
7918 | continue; | |
7919 | } | |
a0d0e21e | 7920 | (void)SvOK_off(sv); |
79072805 LW |
7921 | if (SvTYPE(sv) >= SVt_PV) { |
7922 | SvCUR_set(sv, 0); | |
463ee0b2 LW |
7923 | if (SvPVX(sv) != Nullch) |
7924 | *SvPVX(sv) = '\0'; | |
44a8e56a | 7925 | SvTAINT(sv); |
79072805 LW |
7926 | } |
7927 | if (GvAV(gv)) { | |
7928 | av_clear(GvAV(gv)); | |
7929 | } | |
44a8e56a | 7930 | if (GvHV(gv) && !HvNAME(GvHV(gv))) { |
463ee0b2 | 7931 | hv_clear(GvHV(gv)); |
2f42fcb0 | 7932 | #ifndef PERL_MICRO |
fa6a1c44 | 7933 | #ifdef USE_ENVIRON_ARRAY |
4efc5df6 GS |
7934 | if (gv == PL_envgv |
7935 | # ifdef USE_ITHREADS | |
7936 | && PL_curinterp == aTHX | |
7937 | # endif | |
7938 | ) | |
7939 | { | |
79072805 | 7940 | environ[0] = Nullch; |
4efc5df6 | 7941 | } |
a0d0e21e | 7942 | #endif |
2f42fcb0 | 7943 | #endif /* !PERL_MICRO */ |
79072805 LW |
7944 | } |
7945 | } | |
7946 | } | |
7947 | } | |
7948 | } | |
7949 | ||
645c22ef DM |
7950 | /* |
7951 | =for apidoc sv_2io | |
7952 | ||
7953 | Using various gambits, try to get an IO from an SV: the IO slot if its a | |
7954 | GV; or the recursive result if we're an RV; or the IO slot of the symbol | |
7955 | named after the PV if we're a string. | |
7956 | ||
7957 | =cut | |
7958 | */ | |
7959 | ||
46fc3d4c | 7960 | IO* |
864dbfa3 | 7961 | Perl_sv_2io(pTHX_ SV *sv) |
46fc3d4c | 7962 | { |
7963 | IO* io; | |
7964 | GV* gv; | |
2d8e6c8d | 7965 | STRLEN n_a; |
46fc3d4c | 7966 | |
7967 | switch (SvTYPE(sv)) { | |
7968 | case SVt_PVIO: | |
7969 | io = (IO*)sv; | |
7970 | break; | |
7971 | case SVt_PVGV: | |
7972 | gv = (GV*)sv; | |
7973 | io = GvIO(gv); | |
7974 | if (!io) | |
cea2e8a9 | 7975 | Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv)); |
46fc3d4c | 7976 | break; |
7977 | default: | |
7978 | if (!SvOK(sv)) | |
cea2e8a9 | 7979 | Perl_croak(aTHX_ PL_no_usym, "filehandle"); |
46fc3d4c | 7980 | if (SvROK(sv)) |
7981 | return sv_2io(SvRV(sv)); | |
2d8e6c8d | 7982 | gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO); |
46fc3d4c | 7983 | if (gv) |
7984 | io = GvIO(gv); | |
7985 | else | |
7986 | io = 0; | |
7987 | if (!io) | |
35c1215d | 7988 | Perl_croak(aTHX_ "Bad filehandle: %"SVf, sv); |
46fc3d4c | 7989 | break; |
7990 | } | |
7991 | return io; | |
7992 | } | |
7993 | ||
645c22ef DM |
7994 | /* |
7995 | =for apidoc sv_2cv | |
7996 | ||
7997 | Using various gambits, try to get a CV from an SV; in addition, try if | |
7998 | possible to set C<*st> and C<*gvp> to the stash and GV associated with it. | |
7999 | ||
8000 | =cut | |
8001 | */ | |
8002 | ||
79072805 | 8003 | CV * |
864dbfa3 | 8004 | Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref) |
79072805 | 8005 | { |
c04a4dfe JH |
8006 | GV *gv = Nullgv; |
8007 | CV *cv = Nullcv; | |
2d8e6c8d | 8008 | STRLEN n_a; |
79072805 LW |
8009 | |
8010 | if (!sv) | |
93a17b20 | 8011 | return *gvp = Nullgv, Nullcv; |
79072805 | 8012 | switch (SvTYPE(sv)) { |
79072805 LW |
8013 | case SVt_PVCV: |
8014 | *st = CvSTASH(sv); | |
8015 | *gvp = Nullgv; | |
8016 | return (CV*)sv; | |
8017 | case SVt_PVHV: | |
8018 | case SVt_PVAV: | |
8019 | *gvp = Nullgv; | |
8020 | return Nullcv; | |
8990e307 LW |
8021 | case SVt_PVGV: |
8022 | gv = (GV*)sv; | |
a0d0e21e | 8023 | *gvp = gv; |
8990e307 LW |
8024 | *st = GvESTASH(gv); |
8025 | goto fix_gv; | |
8026 | ||
79072805 | 8027 | default: |
a0d0e21e LW |
8028 | if (SvGMAGICAL(sv)) |
8029 | mg_get(sv); | |
8030 | if (SvROK(sv)) { | |
f5284f61 IZ |
8031 | SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */ |
8032 | tryAMAGICunDEREF(to_cv); | |
8033 | ||
62f274bf GS |
8034 | sv = SvRV(sv); |
8035 | if (SvTYPE(sv) == SVt_PVCV) { | |
8036 | cv = (CV*)sv; | |
8037 | *gvp = Nullgv; | |
8038 | *st = CvSTASH(cv); | |
8039 | return cv; | |
8040 | } | |
8041 | else if(isGV(sv)) | |
8042 | gv = (GV*)sv; | |
8043 | else | |
cea2e8a9 | 8044 | Perl_croak(aTHX_ "Not a subroutine reference"); |
a0d0e21e | 8045 | } |
62f274bf | 8046 | else if (isGV(sv)) |
79072805 LW |
8047 | gv = (GV*)sv; |
8048 | else | |
2d8e6c8d | 8049 | gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV); |
79072805 LW |
8050 | *gvp = gv; |
8051 | if (!gv) | |
8052 | return Nullcv; | |
8053 | *st = GvESTASH(gv); | |
8990e307 | 8054 | fix_gv: |
8ebc5c01 | 8055 | if (lref && !GvCVu(gv)) { |
4633a7c4 | 8056 | SV *tmpsv; |
748a9306 | 8057 | ENTER; |
4633a7c4 | 8058 | tmpsv = NEWSV(704,0); |
16660edb | 8059 | gv_efullname3(tmpsv, gv, Nullch); |
f6ec51f7 GS |
8060 | /* XXX this is probably not what they think they're getting. |
8061 | * It has the same effect as "sub name;", i.e. just a forward | |
8062 | * declaration! */ | |
774d564b | 8063 | newSUB(start_subparse(FALSE, 0), |
4633a7c4 LW |
8064 | newSVOP(OP_CONST, 0, tmpsv), |
8065 | Nullop, | |
8990e307 | 8066 | Nullop); |
748a9306 | 8067 | LEAVE; |
8ebc5c01 | 8068 | if (!GvCVu(gv)) |
35c1215d NC |
8069 | Perl_croak(aTHX_ "Unable to create sub named \"%"SVf"\"", |
8070 | sv); | |
8990e307 | 8071 | } |
8ebc5c01 | 8072 | return GvCVu(gv); |
79072805 LW |
8073 | } |
8074 | } | |
8075 | ||
c461cf8f JH |
8076 | /* |
8077 | =for apidoc sv_true | |
8078 | ||
8079 | Returns true if the SV has a true value by Perl's rules. | |
645c22ef DM |
8080 | Use the C<SvTRUE> macro instead, which may call C<sv_true()> or may |
8081 | instead use an in-line version. | |
c461cf8f JH |
8082 | |
8083 | =cut | |
8084 | */ | |
8085 | ||
79072805 | 8086 | I32 |
864dbfa3 | 8087 | Perl_sv_true(pTHX_ register SV *sv) |
79072805 | 8088 | { |
8990e307 LW |
8089 | if (!sv) |
8090 | return 0; | |
79072805 | 8091 | if (SvPOK(sv)) { |
4e35701f NIS |
8092 | register XPV* tXpv; |
8093 | if ((tXpv = (XPV*)SvANY(sv)) && | |
c2f1de04 | 8094 | (tXpv->xpv_cur > 1 || |
4e35701f | 8095 | (tXpv->xpv_cur && *tXpv->xpv_pv != '0'))) |
79072805 LW |
8096 | return 1; |
8097 | else | |
8098 | return 0; | |
8099 | } | |
8100 | else { | |
8101 | if (SvIOK(sv)) | |
463ee0b2 | 8102 | return SvIVX(sv) != 0; |
79072805 LW |
8103 | else { |
8104 | if (SvNOK(sv)) | |
463ee0b2 | 8105 | return SvNVX(sv) != 0.0; |
79072805 | 8106 | else |
463ee0b2 | 8107 | return sv_2bool(sv); |
79072805 LW |
8108 | } |
8109 | } | |
8110 | } | |
79072805 | 8111 | |
645c22ef DM |
8112 | /* |
8113 | =for apidoc sv_iv | |
8114 | ||
8115 | A private implementation of the C<SvIVx> macro for compilers which can't | |
8116 | cope with complex macro expressions. Always use the macro instead. | |
8117 | ||
8118 | =cut | |
8119 | */ | |
8120 | ||
ff68c719 | 8121 | IV |
864dbfa3 | 8122 | Perl_sv_iv(pTHX_ register SV *sv) |
85e6fe83 | 8123 | { |
25da4f38 IZ |
8124 | if (SvIOK(sv)) { |
8125 | if (SvIsUV(sv)) | |
8126 | return (IV)SvUVX(sv); | |
ff68c719 | 8127 | return SvIVX(sv); |
25da4f38 | 8128 | } |
ff68c719 | 8129 | return sv_2iv(sv); |
85e6fe83 | 8130 | } |
85e6fe83 | 8131 | |
645c22ef DM |
8132 | /* |
8133 | =for apidoc sv_uv | |
8134 | ||
8135 | A private implementation of the C<SvUVx> macro for compilers which can't | |
8136 | cope with complex macro expressions. Always use the macro instead. | |
8137 | ||
8138 | =cut | |
8139 | */ | |
8140 | ||
ff68c719 | 8141 | UV |
864dbfa3 | 8142 | Perl_sv_uv(pTHX_ register SV *sv) |
ff68c719 | 8143 | { |
25da4f38 IZ |
8144 | if (SvIOK(sv)) { |
8145 | if (SvIsUV(sv)) | |
8146 | return SvUVX(sv); | |
8147 | return (UV)SvIVX(sv); | |
8148 | } | |
ff68c719 | 8149 | return sv_2uv(sv); |
8150 | } | |
85e6fe83 | 8151 | |
645c22ef DM |
8152 | /* |
8153 | =for apidoc sv_nv | |
8154 | ||
8155 | A private implementation of the C<SvNVx> macro for compilers which can't | |
8156 | cope with complex macro expressions. Always use the macro instead. | |
8157 | ||
8158 | =cut | |
8159 | */ | |
8160 | ||
65202027 | 8161 | NV |
864dbfa3 | 8162 | Perl_sv_nv(pTHX_ register SV *sv) |
79072805 | 8163 | { |
ff68c719 | 8164 | if (SvNOK(sv)) |
8165 | return SvNVX(sv); | |
8166 | return sv_2nv(sv); | |
79072805 | 8167 | } |
79072805 | 8168 | |
09540bc3 JH |
8169 | /* sv_pv() is now a macro using SvPV_nolen(); |
8170 | * this function provided for binary compatibility only | |
8171 | */ | |
8172 | ||
8173 | char * | |
8174 | Perl_sv_pv(pTHX_ SV *sv) | |
8175 | { | |
8176 | STRLEN n_a; | |
8177 | ||
8178 | if (SvPOK(sv)) | |
8179 | return SvPVX(sv); | |
8180 | ||
8181 | return sv_2pv(sv, &n_a); | |
8182 | } | |
8183 | ||
645c22ef DM |
8184 | /* |
8185 | =for apidoc sv_pv | |
8186 | ||
baca2b92 | 8187 | Use the C<SvPV_nolen> macro instead |
645c22ef | 8188 | |
645c22ef DM |
8189 | =for apidoc sv_pvn |
8190 | ||
8191 | A private implementation of the C<SvPV> macro for compilers which can't | |
8192 | cope with complex macro expressions. Always use the macro instead. | |
8193 | ||
8194 | =cut | |
8195 | */ | |
8196 | ||
1fa8b10d | 8197 | char * |
864dbfa3 | 8198 | Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp) |
79072805 | 8199 | { |
85e6fe83 LW |
8200 | if (SvPOK(sv)) { |
8201 | *lp = SvCUR(sv); | |
a0d0e21e | 8202 | return SvPVX(sv); |
85e6fe83 | 8203 | } |
463ee0b2 | 8204 | return sv_2pv(sv, lp); |
79072805 | 8205 | } |
79072805 | 8206 | |
6e9d1081 NC |
8207 | |
8208 | char * | |
8209 | Perl_sv_pvn_nomg(pTHX_ register SV *sv, STRLEN *lp) | |
8210 | { | |
8211 | if (SvPOK(sv)) { | |
8212 | *lp = SvCUR(sv); | |
8213 | return SvPVX(sv); | |
8214 | } | |
8215 | return sv_2pv_flags(sv, lp, 0); | |
8216 | } | |
8217 | ||
09540bc3 JH |
8218 | /* sv_pvn_force() is now a macro using Perl_sv_pvn_force_flags(); |
8219 | * this function provided for binary compatibility only | |
8220 | */ | |
8221 | ||
8222 | char * | |
8223 | Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp) | |
8224 | { | |
8225 | return sv_pvn_force_flags(sv, lp, SV_GMAGIC); | |
8226 | } | |
8227 | ||
c461cf8f JH |
8228 | /* |
8229 | =for apidoc sv_pvn_force | |
8230 | ||
8231 | Get a sensible string out of the SV somehow. | |
645c22ef DM |
8232 | A private implementation of the C<SvPV_force> macro for compilers which |
8233 | can't cope with complex macro expressions. Always use the macro instead. | |
c461cf8f | 8234 | |
8d6d96c1 HS |
8235 | =for apidoc sv_pvn_force_flags |
8236 | ||
8237 | Get a sensible string out of the SV somehow. | |
8238 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<sv> if | |
8239 | appropriate, else not. C<sv_pvn_force> and C<sv_pvn_force_nomg> are | |
8240 | implemented in terms of this function. | |
645c22ef DM |
8241 | You normally want to use the various wrapper macros instead: see |
8242 | C<SvPV_force> and C<SvPV_force_nomg> | |
8d6d96c1 HS |
8243 | |
8244 | =cut | |
8245 | */ | |
8246 | ||
8247 | char * | |
8248 | Perl_sv_pvn_force_flags(pTHX_ SV *sv, STRLEN *lp, I32 flags) | |
8249 | { | |
c04a4dfe | 8250 | char *s = NULL; |
a0d0e21e | 8251 | |
6fc92669 | 8252 | if (SvTHINKFIRST(sv) && !SvROK(sv)) |
765f542d | 8253 | sv_force_normal_flags(sv, 0); |
1c846c1f | 8254 | |
a0d0e21e LW |
8255 | if (SvPOK(sv)) { |
8256 | *lp = SvCUR(sv); | |
8257 | } | |
8258 | else { | |
748a9306 | 8259 | if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) { |
cea2e8a9 | 8260 | Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0), |
53e06cf0 | 8261 | OP_NAME(PL_op)); |
a0d0e21e | 8262 | } |
4633a7c4 | 8263 | else |
8d6d96c1 | 8264 | s = sv_2pv_flags(sv, lp, flags); |
a0d0e21e LW |
8265 | if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */ |
8266 | STRLEN len = *lp; | |
1c846c1f | 8267 | |
a0d0e21e LW |
8268 | if (SvROK(sv)) |
8269 | sv_unref(sv); | |
8270 | (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */ | |
8271 | SvGROW(sv, len + 1); | |
8272 | Move(s,SvPVX(sv),len,char); | |
8273 | SvCUR_set(sv, len); | |
8274 | *SvEND(sv) = '\0'; | |
8275 | } | |
8276 | if (!SvPOK(sv)) { | |
8277 | SvPOK_on(sv); /* validate pointer */ | |
8278 | SvTAINT(sv); | |
1d7c1841 GS |
8279 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
8280 | PTR2UV(sv),SvPVX(sv))); | |
a0d0e21e LW |
8281 | } |
8282 | } | |
8283 | return SvPVX(sv); | |
8284 | } | |
8285 | ||
09540bc3 JH |
8286 | /* sv_pvbyte () is now a macro using Perl_sv_2pv_flags(); |
8287 | * this function provided for binary compatibility only | |
8288 | */ | |
8289 | ||
8290 | char * | |
8291 | Perl_sv_pvbyte(pTHX_ SV *sv) | |
8292 | { | |
8293 | sv_utf8_downgrade(sv,0); | |
8294 | return sv_pv(sv); | |
8295 | } | |
8296 | ||
645c22ef DM |
8297 | /* |
8298 | =for apidoc sv_pvbyte | |
8299 | ||
baca2b92 | 8300 | Use C<SvPVbyte_nolen> instead. |
645c22ef | 8301 | |
645c22ef DM |
8302 | =for apidoc sv_pvbyten |
8303 | ||
8304 | A private implementation of the C<SvPVbyte> macro for compilers | |
8305 | which can't cope with complex macro expressions. Always use the macro | |
8306 | instead. | |
8307 | ||
8308 | =cut | |
8309 | */ | |
8310 | ||
7340a771 GS |
8311 | char * |
8312 | Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp) | |
8313 | { | |
ffebcc3e | 8314 | sv_utf8_downgrade(sv,0); |
7340a771 GS |
8315 | return sv_pvn(sv,lp); |
8316 | } | |
8317 | ||
645c22ef DM |
8318 | /* |
8319 | =for apidoc sv_pvbyten_force | |
8320 | ||
8321 | A private implementation of the C<SvPVbytex_force> macro for compilers | |
8322 | which can't cope with complex macro expressions. Always use the macro | |
8323 | instead. | |
8324 | ||
8325 | =cut | |
8326 | */ | |
8327 | ||
7340a771 GS |
8328 | char * |
8329 | Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp) | |
8330 | { | |
46ec2f14 | 8331 | sv_pvn_force(sv,lp); |
ffebcc3e | 8332 | sv_utf8_downgrade(sv,0); |
46ec2f14 TS |
8333 | *lp = SvCUR(sv); |
8334 | return SvPVX(sv); | |
7340a771 GS |
8335 | } |
8336 | ||
09540bc3 JH |
8337 | /* sv_pvutf8 () is now a macro using Perl_sv_2pv_flags(); |
8338 | * this function provided for binary compatibility only | |
8339 | */ | |
8340 | ||
8341 | char * | |
8342 | Perl_sv_pvutf8(pTHX_ SV *sv) | |
8343 | { | |
8344 | sv_utf8_upgrade(sv); | |
8345 | return sv_pv(sv); | |
8346 | } | |
8347 | ||
645c22ef DM |
8348 | /* |
8349 | =for apidoc sv_pvutf8 | |
8350 | ||
baca2b92 | 8351 | Use the C<SvPVutf8_nolen> macro instead |
645c22ef | 8352 | |
645c22ef DM |
8353 | =for apidoc sv_pvutf8n |
8354 | ||
8355 | A private implementation of the C<SvPVutf8> macro for compilers | |
8356 | which can't cope with complex macro expressions. Always use the macro | |
8357 | instead. | |
8358 | ||
8359 | =cut | |
8360 | */ | |
8361 | ||
7340a771 GS |
8362 | char * |
8363 | Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp) | |
8364 | { | |
560a288e | 8365 | sv_utf8_upgrade(sv); |
7340a771 GS |
8366 | return sv_pvn(sv,lp); |
8367 | } | |
8368 | ||
c461cf8f JH |
8369 | /* |
8370 | =for apidoc sv_pvutf8n_force | |
8371 | ||
645c22ef DM |
8372 | A private implementation of the C<SvPVutf8_force> macro for compilers |
8373 | which can't cope with complex macro expressions. Always use the macro | |
8374 | instead. | |
c461cf8f JH |
8375 | |
8376 | =cut | |
8377 | */ | |
8378 | ||
7340a771 GS |
8379 | char * |
8380 | Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp) | |
8381 | { | |
46ec2f14 | 8382 | sv_pvn_force(sv,lp); |
560a288e | 8383 | sv_utf8_upgrade(sv); |
46ec2f14 TS |
8384 | *lp = SvCUR(sv); |
8385 | return SvPVX(sv); | |
7340a771 GS |
8386 | } |
8387 | ||
c461cf8f JH |
8388 | /* |
8389 | =for apidoc sv_reftype | |
8390 | ||
8391 | Returns a string describing what the SV is a reference to. | |
8392 | ||
8393 | =cut | |
8394 | */ | |
8395 | ||
7340a771 | 8396 | char * |
864dbfa3 | 8397 | Perl_sv_reftype(pTHX_ SV *sv, int ob) |
a0d0e21e | 8398 | { |
c86bf373 | 8399 | if (ob && SvOBJECT(sv)) { |
e27ad1f2 AV |
8400 | if (HvNAME(SvSTASH(sv))) |
8401 | return HvNAME(SvSTASH(sv)); | |
8402 | else | |
8403 | return "__ANON__"; | |
c86bf373 | 8404 | } |
a0d0e21e LW |
8405 | else { |
8406 | switch (SvTYPE(sv)) { | |
8407 | case SVt_NULL: | |
8408 | case SVt_IV: | |
8409 | case SVt_NV: | |
8410 | case SVt_RV: | |
8411 | case SVt_PV: | |
8412 | case SVt_PVIV: | |
8413 | case SVt_PVNV: | |
8414 | case SVt_PVMG: | |
8415 | case SVt_PVBM: | |
439cb1c4 JP |
8416 | if (SvVOK(sv)) |
8417 | return "VSTRING"; | |
a0d0e21e LW |
8418 | if (SvROK(sv)) |
8419 | return "REF"; | |
8420 | else | |
8421 | return "SCALAR"; | |
be65207d DM |
8422 | |
8423 | case SVt_PVLV: return SvROK(sv) ? "REF" | |
8424 | /* tied lvalues should appear to be | |
8425 | * scalars for backwards compatitbility */ | |
8426 | : (LvTYPE(sv) == 't' || LvTYPE(sv) == 'T') | |
8427 | ? "SCALAR" : "LVALUE"; | |
a0d0e21e LW |
8428 | case SVt_PVAV: return "ARRAY"; |
8429 | case SVt_PVHV: return "HASH"; | |
8430 | case SVt_PVCV: return "CODE"; | |
8431 | case SVt_PVGV: return "GLOB"; | |
1d2dff63 | 8432 | case SVt_PVFM: return "FORMAT"; |
27f9d8f3 | 8433 | case SVt_PVIO: return "IO"; |
a0d0e21e LW |
8434 | default: return "UNKNOWN"; |
8435 | } | |
8436 | } | |
8437 | } | |
8438 | ||
954c1994 GS |
8439 | /* |
8440 | =for apidoc sv_isobject | |
8441 | ||
8442 | Returns a boolean indicating whether the SV is an RV pointing to a blessed | |
8443 | object. If the SV is not an RV, or if the object is not blessed, then this | |
8444 | will return false. | |
8445 | ||
8446 | =cut | |
8447 | */ | |
8448 | ||
463ee0b2 | 8449 | int |
864dbfa3 | 8450 | Perl_sv_isobject(pTHX_ SV *sv) |
85e6fe83 | 8451 | { |
68dc0745 | 8452 | if (!sv) |
8453 | return 0; | |
8454 | if (SvGMAGICAL(sv)) | |
8455 | mg_get(sv); | |
85e6fe83 LW |
8456 | if (!SvROK(sv)) |
8457 | return 0; | |
8458 | sv = (SV*)SvRV(sv); | |
8459 | if (!SvOBJECT(sv)) | |
8460 | return 0; | |
8461 | return 1; | |
8462 | } | |
8463 | ||
954c1994 GS |
8464 | /* |
8465 | =for apidoc sv_isa | |
8466 | ||
8467 | Returns a boolean indicating whether the SV is blessed into the specified | |
8468 | class. This does not check for subtypes; use C<sv_derived_from> to verify | |
8469 | an inheritance relationship. | |
8470 | ||
8471 | =cut | |
8472 | */ | |
8473 | ||
85e6fe83 | 8474 | int |
864dbfa3 | 8475 | Perl_sv_isa(pTHX_ SV *sv, const char *name) |
463ee0b2 | 8476 | { |
68dc0745 | 8477 | if (!sv) |
8478 | return 0; | |
8479 | if (SvGMAGICAL(sv)) | |
8480 | mg_get(sv); | |
ed6116ce | 8481 | if (!SvROK(sv)) |
463ee0b2 | 8482 | return 0; |
ed6116ce LW |
8483 | sv = (SV*)SvRV(sv); |
8484 | if (!SvOBJECT(sv)) | |
463ee0b2 | 8485 | return 0; |
e27ad1f2 AV |
8486 | if (!HvNAME(SvSTASH(sv))) |
8487 | return 0; | |
463ee0b2 LW |
8488 | |
8489 | return strEQ(HvNAME(SvSTASH(sv)), name); | |
8490 | } | |
8491 | ||
954c1994 GS |
8492 | /* |
8493 | =for apidoc newSVrv | |
8494 | ||
8495 | Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then | |
8496 | it will be upgraded to one. If C<classname> is non-null then the new SV will | |
8497 | be blessed in the specified package. The new SV is returned and its | |
8498 | reference count is 1. | |
8499 | ||
8500 | =cut | |
8501 | */ | |
8502 | ||
463ee0b2 | 8503 | SV* |
864dbfa3 | 8504 | Perl_newSVrv(pTHX_ SV *rv, const char *classname) |
463ee0b2 | 8505 | { |
463ee0b2 LW |
8506 | SV *sv; |
8507 | ||
4561caa4 | 8508 | new_SV(sv); |
51cf62d8 | 8509 | |
765f542d | 8510 | SV_CHECK_THINKFIRST_COW_DROP(rv); |
51cf62d8 | 8511 | SvAMAGIC_off(rv); |
51cf62d8 | 8512 | |
0199fce9 JD |
8513 | if (SvTYPE(rv) >= SVt_PVMG) { |
8514 | U32 refcnt = SvREFCNT(rv); | |
8515 | SvREFCNT(rv) = 0; | |
8516 | sv_clear(rv); | |
8517 | SvFLAGS(rv) = 0; | |
8518 | SvREFCNT(rv) = refcnt; | |
8519 | } | |
8520 | ||
51cf62d8 | 8521 | if (SvTYPE(rv) < SVt_RV) |
0199fce9 JD |
8522 | sv_upgrade(rv, SVt_RV); |
8523 | else if (SvTYPE(rv) > SVt_RV) { | |
8524 | (void)SvOOK_off(rv); | |
8525 | if (SvPVX(rv) && SvLEN(rv)) | |
8526 | Safefree(SvPVX(rv)); | |
8527 | SvCUR_set(rv, 0); | |
8528 | SvLEN_set(rv, 0); | |
8529 | } | |
51cf62d8 OT |
8530 | |
8531 | (void)SvOK_off(rv); | |
053fc874 | 8532 | SvRV(rv) = sv; |
ed6116ce | 8533 | SvROK_on(rv); |
463ee0b2 | 8534 | |
a0d0e21e LW |
8535 | if (classname) { |
8536 | HV* stash = gv_stashpv(classname, TRUE); | |
8537 | (void)sv_bless(rv, stash); | |
8538 | } | |
8539 | return sv; | |
8540 | } | |
8541 | ||
954c1994 GS |
8542 | /* |
8543 | =for apidoc sv_setref_pv | |
8544 | ||
8545 | Copies a pointer into a new SV, optionally blessing the SV. The C<rv> | |
8546 | argument will be upgraded to an RV. That RV will be modified to point to | |
8547 | the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed | |
8548 | into the SV. The C<classname> argument indicates the package for the | |
8549 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8550 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
8551 | |
8552 | Do not use with other Perl types such as HV, AV, SV, CV, because those | |
8553 | objects will become corrupted by the pointer copy process. | |
8554 | ||
8555 | Note that C<sv_setref_pvn> copies the string while this copies the pointer. | |
8556 | ||
8557 | =cut | |
8558 | */ | |
8559 | ||
a0d0e21e | 8560 | SV* |
864dbfa3 | 8561 | Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv) |
a0d0e21e | 8562 | { |
189b2af5 | 8563 | if (!pv) { |
3280af22 | 8564 | sv_setsv(rv, &PL_sv_undef); |
189b2af5 GS |
8565 | SvSETMAGIC(rv); |
8566 | } | |
a0d0e21e | 8567 | else |
56431972 | 8568 | sv_setiv(newSVrv(rv,classname), PTR2IV(pv)); |
a0d0e21e LW |
8569 | return rv; |
8570 | } | |
8571 | ||
954c1994 GS |
8572 | /* |
8573 | =for apidoc sv_setref_iv | |
8574 | ||
8575 | Copies an integer into a new SV, optionally blessing the SV. The C<rv> | |
8576 | argument will be upgraded to an RV. That RV will be modified to point to | |
8577 | the new SV. The C<classname> argument indicates the package for the | |
8578 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8579 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
8580 | |
8581 | =cut | |
8582 | */ | |
8583 | ||
a0d0e21e | 8584 | SV* |
864dbfa3 | 8585 | Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv) |
a0d0e21e LW |
8586 | { |
8587 | sv_setiv(newSVrv(rv,classname), iv); | |
8588 | return rv; | |
8589 | } | |
8590 | ||
954c1994 | 8591 | /* |
e1c57cef JH |
8592 | =for apidoc sv_setref_uv |
8593 | ||
8594 | Copies an unsigned integer into a new SV, optionally blessing the SV. The C<rv> | |
8595 | argument will be upgraded to an RV. That RV will be modified to point to | |
8596 | the new SV. The C<classname> argument indicates the package for the | |
8597 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8598 | will have a reference count of 1, and the RV will be returned. |
e1c57cef JH |
8599 | |
8600 | =cut | |
8601 | */ | |
8602 | ||
8603 | SV* | |
8604 | Perl_sv_setref_uv(pTHX_ SV *rv, const char *classname, UV uv) | |
8605 | { | |
8606 | sv_setuv(newSVrv(rv,classname), uv); | |
8607 | return rv; | |
8608 | } | |
8609 | ||
8610 | /* | |
954c1994 GS |
8611 | =for apidoc sv_setref_nv |
8612 | ||
8613 | Copies a double into a new SV, optionally blessing the SV. The C<rv> | |
8614 | argument will be upgraded to an RV. That RV will be modified to point to | |
8615 | the new SV. The C<classname> argument indicates the package for the | |
8616 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8617 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
8618 | |
8619 | =cut | |
8620 | */ | |
8621 | ||
a0d0e21e | 8622 | SV* |
65202027 | 8623 | Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv) |
a0d0e21e LW |
8624 | { |
8625 | sv_setnv(newSVrv(rv,classname), nv); | |
8626 | return rv; | |
8627 | } | |
463ee0b2 | 8628 | |
954c1994 GS |
8629 | /* |
8630 | =for apidoc sv_setref_pvn | |
8631 | ||
8632 | Copies a string into a new SV, optionally blessing the SV. The length of the | |
8633 | string must be specified with C<n>. The C<rv> argument will be upgraded to | |
8634 | an RV. That RV will be modified to point to the new SV. The C<classname> | |
8635 | argument indicates the package for the blessing. Set C<classname> to | |
7a5fa8a2 | 8636 | C<Nullch> to avoid the blessing. The new SV will have a reference count |
d34c2299 | 8637 | of 1, and the RV will be returned. |
954c1994 GS |
8638 | |
8639 | Note that C<sv_setref_pv> copies the pointer while this copies the string. | |
8640 | ||
8641 | =cut | |
8642 | */ | |
8643 | ||
a0d0e21e | 8644 | SV* |
864dbfa3 | 8645 | Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n) |
a0d0e21e LW |
8646 | { |
8647 | sv_setpvn(newSVrv(rv,classname), pv, n); | |
463ee0b2 LW |
8648 | return rv; |
8649 | } | |
8650 | ||
954c1994 GS |
8651 | /* |
8652 | =for apidoc sv_bless | |
8653 | ||
8654 | Blesses an SV into a specified package. The SV must be an RV. The package | |
8655 | must be designated by its stash (see C<gv_stashpv()>). The reference count | |
8656 | of the SV is unaffected. | |
8657 | ||
8658 | =cut | |
8659 | */ | |
8660 | ||
a0d0e21e | 8661 | SV* |
864dbfa3 | 8662 | Perl_sv_bless(pTHX_ SV *sv, HV *stash) |
a0d0e21e | 8663 | { |
76e3520e | 8664 | SV *tmpRef; |
a0d0e21e | 8665 | if (!SvROK(sv)) |
cea2e8a9 | 8666 | Perl_croak(aTHX_ "Can't bless non-reference value"); |
76e3520e GS |
8667 | tmpRef = SvRV(sv); |
8668 | if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) { | |
8669 | if (SvREADONLY(tmpRef)) | |
cea2e8a9 | 8670 | Perl_croak(aTHX_ PL_no_modify); |
76e3520e GS |
8671 | if (SvOBJECT(tmpRef)) { |
8672 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 8673 | --PL_sv_objcount; |
76e3520e | 8674 | SvREFCNT_dec(SvSTASH(tmpRef)); |
2e3febc6 | 8675 | } |
a0d0e21e | 8676 | } |
76e3520e GS |
8677 | SvOBJECT_on(tmpRef); |
8678 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 8679 | ++PL_sv_objcount; |
76e3520e GS |
8680 | (void)SvUPGRADE(tmpRef, SVt_PVMG); |
8681 | SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash); | |
a0d0e21e | 8682 | |
2e3febc6 CS |
8683 | if (Gv_AMG(stash)) |
8684 | SvAMAGIC_on(sv); | |
8685 | else | |
8686 | SvAMAGIC_off(sv); | |
a0d0e21e | 8687 | |
1edbfb88 AB |
8688 | if(SvSMAGICAL(tmpRef)) |
8689 | if(mg_find(tmpRef, PERL_MAGIC_ext) || mg_find(tmpRef, PERL_MAGIC_uvar)) | |
8690 | mg_set(tmpRef); | |
8691 | ||
8692 | ||
ecdeb87c | 8693 | |
a0d0e21e LW |
8694 | return sv; |
8695 | } | |
8696 | ||
645c22ef | 8697 | /* Downgrades a PVGV to a PVMG. |
645c22ef DM |
8698 | */ |
8699 | ||
76e3520e | 8700 | STATIC void |
cea2e8a9 | 8701 | S_sv_unglob(pTHX_ SV *sv) |
a0d0e21e | 8702 | { |
850fabdf GS |
8703 | void *xpvmg; |
8704 | ||
a0d0e21e LW |
8705 | assert(SvTYPE(sv) == SVt_PVGV); |
8706 | SvFAKE_off(sv); | |
8707 | if (GvGP(sv)) | |
1edc1566 | 8708 | gp_free((GV*)sv); |
e826b3c7 GS |
8709 | if (GvSTASH(sv)) { |
8710 | SvREFCNT_dec(GvSTASH(sv)); | |
8711 | GvSTASH(sv) = Nullhv; | |
8712 | } | |
14befaf4 | 8713 | sv_unmagic(sv, PERL_MAGIC_glob); |
a0d0e21e | 8714 | Safefree(GvNAME(sv)); |
a5f75d66 | 8715 | GvMULTI_off(sv); |
850fabdf GS |
8716 | |
8717 | /* need to keep SvANY(sv) in the right arena */ | |
8718 | xpvmg = new_XPVMG(); | |
8719 | StructCopy(SvANY(sv), xpvmg, XPVMG); | |
8720 | del_XPVGV(SvANY(sv)); | |
8721 | SvANY(sv) = xpvmg; | |
8722 | ||
a0d0e21e LW |
8723 | SvFLAGS(sv) &= ~SVTYPEMASK; |
8724 | SvFLAGS(sv) |= SVt_PVMG; | |
8725 | } | |
8726 | ||
954c1994 | 8727 | /* |
840a7b70 | 8728 | =for apidoc sv_unref_flags |
954c1994 GS |
8729 | |
8730 | Unsets the RV status of the SV, and decrements the reference count of | |
8731 | whatever was being referenced by the RV. This can almost be thought of | |
840a7b70 IZ |
8732 | as a reversal of C<newSVrv>. The C<cflags> argument can contain |
8733 | C<SV_IMMEDIATE_UNREF> to force the reference count to be decremented | |
8734 | (otherwise the decrementing is conditional on the reference count being | |
8735 | different from one or the reference being a readonly SV). | |
7889fe52 | 8736 | See C<SvROK_off>. |
954c1994 GS |
8737 | |
8738 | =cut | |
8739 | */ | |
8740 | ||
ed6116ce | 8741 | void |
840a7b70 | 8742 | Perl_sv_unref_flags(pTHX_ SV *sv, U32 flags) |
ed6116ce | 8743 | { |
a0d0e21e | 8744 | SV* rv = SvRV(sv); |
810b8aa5 GS |
8745 | |
8746 | if (SvWEAKREF(sv)) { | |
8747 | sv_del_backref(sv); | |
8748 | SvWEAKREF_off(sv); | |
8749 | SvRV(sv) = 0; | |
8750 | return; | |
8751 | } | |
ed6116ce LW |
8752 | SvRV(sv) = 0; |
8753 | SvROK_off(sv); | |
04ca4930 NC |
8754 | /* You can't have a || SvREADONLY(rv) here, as $a = $$a, where $a was |
8755 | assigned to as BEGIN {$a = \"Foo"} will fail. */ | |
8756 | if (SvREFCNT(rv) != 1 || (flags & SV_IMMEDIATE_UNREF)) | |
4633a7c4 | 8757 | SvREFCNT_dec(rv); |
840a7b70 | 8758 | else /* XXX Hack, but hard to make $a=$a->[1] work otherwise */ |
4633a7c4 | 8759 | sv_2mortal(rv); /* Schedule for freeing later */ |
ed6116ce | 8760 | } |
8990e307 | 8761 | |
840a7b70 IZ |
8762 | /* |
8763 | =for apidoc sv_unref | |
8764 | ||
8765 | Unsets the RV status of the SV, and decrements the reference count of | |
8766 | whatever was being referenced by the RV. This can almost be thought of | |
8767 | as a reversal of C<newSVrv>. This is C<sv_unref_flags> with the C<flag> | |
7889fe52 | 8768 | being zero. See C<SvROK_off>. |
840a7b70 IZ |
8769 | |
8770 | =cut | |
8771 | */ | |
8772 | ||
8773 | void | |
8774 | Perl_sv_unref(pTHX_ SV *sv) | |
8775 | { | |
8776 | sv_unref_flags(sv, 0); | |
8777 | } | |
8778 | ||
645c22ef DM |
8779 | /* |
8780 | =for apidoc sv_taint | |
8781 | ||
8782 | Taint an SV. Use C<SvTAINTED_on> instead. | |
8783 | =cut | |
8784 | */ | |
8785 | ||
bbce6d69 | 8786 | void |
864dbfa3 | 8787 | Perl_sv_taint(pTHX_ SV *sv) |
bbce6d69 | 8788 | { |
14befaf4 | 8789 | sv_magic((sv), Nullsv, PERL_MAGIC_taint, Nullch, 0); |
bbce6d69 | 8790 | } |
8791 | ||
645c22ef DM |
8792 | /* |
8793 | =for apidoc sv_untaint | |
8794 | ||
8795 | Untaint an SV. Use C<SvTAINTED_off> instead. | |
8796 | =cut | |
8797 | */ | |
8798 | ||
bbce6d69 | 8799 | void |
864dbfa3 | 8800 | Perl_sv_untaint(pTHX_ SV *sv) |
bbce6d69 | 8801 | { |
13f57bf8 | 8802 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
14befaf4 | 8803 | MAGIC *mg = mg_find(sv, PERL_MAGIC_taint); |
36477c24 | 8804 | if (mg) |
565764a8 | 8805 | mg->mg_len &= ~1; |
36477c24 | 8806 | } |
bbce6d69 | 8807 | } |
8808 | ||
645c22ef DM |
8809 | /* |
8810 | =for apidoc sv_tainted | |
8811 | ||
8812 | Test an SV for taintedness. Use C<SvTAINTED> instead. | |
8813 | =cut | |
8814 | */ | |
8815 | ||
bbce6d69 | 8816 | bool |
864dbfa3 | 8817 | Perl_sv_tainted(pTHX_ SV *sv) |
bbce6d69 | 8818 | { |
13f57bf8 | 8819 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
14befaf4 | 8820 | MAGIC *mg = mg_find(sv, PERL_MAGIC_taint); |
155aba94 | 8821 | if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv))) |
36477c24 | 8822 | return TRUE; |
8823 | } | |
8824 | return FALSE; | |
bbce6d69 | 8825 | } |
8826 | ||
09540bc3 JH |
8827 | /* |
8828 | =for apidoc sv_setpviv | |
8829 | ||
8830 | Copies an integer into the given SV, also updating its string value. | |
8831 | Does not handle 'set' magic. See C<sv_setpviv_mg>. | |
8832 | ||
8833 | =cut | |
8834 | */ | |
8835 | ||
8836 | void | |
8837 | Perl_sv_setpviv(pTHX_ SV *sv, IV iv) | |
8838 | { | |
8839 | char buf[TYPE_CHARS(UV)]; | |
8840 | char *ebuf; | |
8841 | char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf); | |
8842 | ||
8843 | sv_setpvn(sv, ptr, ebuf - ptr); | |
8844 | } | |
8845 | ||
8846 | /* | |
8847 | =for apidoc sv_setpviv_mg | |
8848 | ||
8849 | Like C<sv_setpviv>, but also handles 'set' magic. | |
8850 | ||
8851 | =cut | |
8852 | */ | |
8853 | ||
8854 | void | |
8855 | Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv) | |
8856 | { | |
8857 | char buf[TYPE_CHARS(UV)]; | |
8858 | char *ebuf; | |
8859 | char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf); | |
8860 | ||
8861 | sv_setpvn(sv, ptr, ebuf - ptr); | |
8862 | SvSETMAGIC(sv); | |
8863 | } | |
8864 | ||
cea2e8a9 | 8865 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
8866 | |
8867 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
8868 | * version of the main function, (which may itself be aliased to us). | |
8869 | * Don't access this version directly. | |
8870 | */ | |
8871 | ||
cea2e8a9 GS |
8872 | void |
8873 | Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...) | |
8874 | { | |
8875 | dTHX; | |
8876 | va_list args; | |
8877 | va_start(args, pat); | |
c5be433b | 8878 | sv_vsetpvf(sv, pat, &args); |
cea2e8a9 GS |
8879 | va_end(args); |
8880 | } | |
8881 | ||
645c22ef DM |
8882 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
8883 | * version of the main function, (which may itself be aliased to us). | |
8884 | * Don't access this version directly. | |
8885 | */ | |
cea2e8a9 GS |
8886 | |
8887 | void | |
8888 | Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
8889 | { | |
8890 | dTHX; | |
8891 | va_list args; | |
8892 | va_start(args, pat); | |
c5be433b | 8893 | sv_vsetpvf_mg(sv, pat, &args); |
cea2e8a9 | 8894 | va_end(args); |
cea2e8a9 GS |
8895 | } |
8896 | #endif | |
8897 | ||
954c1994 GS |
8898 | /* |
8899 | =for apidoc sv_setpvf | |
8900 | ||
8901 | Processes its arguments like C<sprintf> and sets an SV to the formatted | |
8902 | output. Does not handle 'set' magic. See C<sv_setpvf_mg>. | |
8903 | ||
8904 | =cut | |
8905 | */ | |
8906 | ||
46fc3d4c | 8907 | void |
864dbfa3 | 8908 | Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 8909 | { |
8910 | va_list args; | |
46fc3d4c | 8911 | va_start(args, pat); |
c5be433b | 8912 | sv_vsetpvf(sv, pat, &args); |
46fc3d4c | 8913 | va_end(args); |
8914 | } | |
8915 | ||
645c22ef DM |
8916 | /* backend for C<sv_setpvf> and C<sv_setpvf_nocontext> */ |
8917 | ||
c5be433b GS |
8918 | void |
8919 | Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args) | |
8920 | { | |
8921 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
8922 | } | |
ef50df4b | 8923 | |
954c1994 GS |
8924 | /* |
8925 | =for apidoc sv_setpvf_mg | |
8926 | ||
8927 | Like C<sv_setpvf>, but also handles 'set' magic. | |
8928 | ||
8929 | =cut | |
8930 | */ | |
8931 | ||
ef50df4b | 8932 | void |
864dbfa3 | 8933 | Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
8934 | { |
8935 | va_list args; | |
ef50df4b | 8936 | va_start(args, pat); |
c5be433b | 8937 | sv_vsetpvf_mg(sv, pat, &args); |
ef50df4b | 8938 | va_end(args); |
c5be433b GS |
8939 | } |
8940 | ||
645c22ef DM |
8941 | /* backend for C<sv_setpvf_mg> C<setpvf_mg_nocontext> */ |
8942 | ||
c5be433b GS |
8943 | void |
8944 | Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
8945 | { | |
8946 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
ef50df4b GS |
8947 | SvSETMAGIC(sv); |
8948 | } | |
8949 | ||
cea2e8a9 | 8950 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
8951 | |
8952 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
8953 | * version of the main function, (which may itself be aliased to us). | |
8954 | * Don't access this version directly. | |
8955 | */ | |
8956 | ||
cea2e8a9 GS |
8957 | void |
8958 | Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...) | |
8959 | { | |
8960 | dTHX; | |
8961 | va_list args; | |
8962 | va_start(args, pat); | |
c5be433b | 8963 | sv_vcatpvf(sv, pat, &args); |
cea2e8a9 GS |
8964 | va_end(args); |
8965 | } | |
8966 | ||
645c22ef DM |
8967 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
8968 | * version of the main function, (which may itself be aliased to us). | |
8969 | * Don't access this version directly. | |
8970 | */ | |
8971 | ||
cea2e8a9 GS |
8972 | void |
8973 | Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
8974 | { | |
8975 | dTHX; | |
8976 | va_list args; | |
8977 | va_start(args, pat); | |
c5be433b | 8978 | sv_vcatpvf_mg(sv, pat, &args); |
cea2e8a9 | 8979 | va_end(args); |
cea2e8a9 GS |
8980 | } |
8981 | #endif | |
8982 | ||
954c1994 GS |
8983 | /* |
8984 | =for apidoc sv_catpvf | |
8985 | ||
d5ce4a7c GA |
8986 | Processes its arguments like C<sprintf> and appends the formatted |
8987 | output to an SV. If the appended data contains "wide" characters | |
8988 | (including, but not limited to, SVs with a UTF-8 PV formatted with %s, | |
8989 | and characters >255 formatted with %c), the original SV might get | |
8990 | upgraded to UTF-8. Handles 'get' magic, but not 'set' magic. | |
8991 | C<SvSETMAGIC()> must typically be called after calling this function | |
8992 | to handle 'set' magic. | |
954c1994 | 8993 | |
d5ce4a7c | 8994 | =cut */ |
954c1994 | 8995 | |
46fc3d4c | 8996 | void |
864dbfa3 | 8997 | Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 8998 | { |
8999 | va_list args; | |
46fc3d4c | 9000 | va_start(args, pat); |
c5be433b | 9001 | sv_vcatpvf(sv, pat, &args); |
46fc3d4c | 9002 | va_end(args); |
9003 | } | |
9004 | ||
645c22ef DM |
9005 | /* backend for C<sv_catpvf> and C<catpvf_mg_nocontext> */ |
9006 | ||
ef50df4b | 9007 | void |
c5be433b GS |
9008 | Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args) |
9009 | { | |
9010 | sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
9011 | } | |
9012 | ||
954c1994 GS |
9013 | /* |
9014 | =for apidoc sv_catpvf_mg | |
9015 | ||
9016 | Like C<sv_catpvf>, but also handles 'set' magic. | |
9017 | ||
9018 | =cut | |
9019 | */ | |
9020 | ||
c5be433b | 9021 | void |
864dbfa3 | 9022 | Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
9023 | { |
9024 | va_list args; | |
ef50df4b | 9025 | va_start(args, pat); |
c5be433b | 9026 | sv_vcatpvf_mg(sv, pat, &args); |
ef50df4b | 9027 | va_end(args); |
c5be433b GS |
9028 | } |
9029 | ||
645c22ef DM |
9030 | /* backend for C<catpvf_mg> and C<catpvf_mg_nocontext> */ |
9031 | ||
c5be433b GS |
9032 | void |
9033 | Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
9034 | { | |
9035 | sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
ef50df4b GS |
9036 | SvSETMAGIC(sv); |
9037 | } | |
9038 | ||
954c1994 GS |
9039 | /* |
9040 | =for apidoc sv_vsetpvfn | |
9041 | ||
9042 | Works like C<vcatpvfn> but copies the text into the SV instead of | |
9043 | appending it. | |
9044 | ||
645c22ef DM |
9045 | Usually used via one of its frontends C<sv_setpvf> and C<sv_setpvf_mg>. |
9046 | ||
954c1994 GS |
9047 | =cut |
9048 | */ | |
9049 | ||
46fc3d4c | 9050 | void |
7d5ea4e7 | 9051 | Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 9052 | { |
9053 | sv_setpvn(sv, "", 0); | |
7d5ea4e7 | 9054 | sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted); |
46fc3d4c | 9055 | } |
9056 | ||
645c22ef DM |
9057 | /* private function for use in sv_vcatpvfn via the EXPECT_NUMBER macro */ |
9058 | ||
2d00ba3b | 9059 | STATIC I32 |
9dd79c3f | 9060 | S_expect_number(pTHX_ char** pattern) |
211dfcf1 HS |
9061 | { |
9062 | I32 var = 0; | |
9063 | switch (**pattern) { | |
9064 | case '1': case '2': case '3': | |
9065 | case '4': case '5': case '6': | |
9066 | case '7': case '8': case '9': | |
9067 | while (isDIGIT(**pattern)) | |
9068 | var = var * 10 + (*(*pattern)++ - '0'); | |
9069 | } | |
9070 | return var; | |
9071 | } | |
9dd79c3f | 9072 | #define EXPECT_NUMBER(pattern, var) (var = S_expect_number(aTHX_ &pattern)) |
211dfcf1 | 9073 | |
4151a5fe IZ |
9074 | static char * |
9075 | F0convert(NV nv, char *endbuf, STRLEN *len) | |
9076 | { | |
9077 | int neg = nv < 0; | |
9078 | UV uv; | |
9079 | char *p = endbuf; | |
9080 | ||
9081 | if (neg) | |
9082 | nv = -nv; | |
9083 | if (nv < UV_MAX) { | |
9084 | nv += 0.5; | |
028f8eaa | 9085 | uv = (UV)nv; |
4151a5fe IZ |
9086 | if (uv & 1 && uv == nv) |
9087 | uv--; /* Round to even */ | |
9088 | do { | |
9089 | unsigned dig = uv % 10; | |
9090 | *--p = '0' + dig; | |
9091 | } while (uv /= 10); | |
9092 | if (neg) | |
9093 | *--p = '-'; | |
9094 | *len = endbuf - p; | |
9095 | return p; | |
9096 | } | |
9097 | return Nullch; | |
9098 | } | |
9099 | ||
9100 | ||
954c1994 GS |
9101 | /* |
9102 | =for apidoc sv_vcatpvfn | |
9103 | ||
9104 | Processes its arguments like C<vsprintf> and appends the formatted output | |
9105 | to an SV. Uses an array of SVs if the C style variable argument list is | |
9106 | missing (NULL). When running with taint checks enabled, indicates via | |
9107 | C<maybe_tainted> if results are untrustworthy (often due to the use of | |
9108 | locales). | |
9109 | ||
645c22ef DM |
9110 | Usually used via one of its frontends C<sv_catpvf> and C<sv_catpvf_mg>. |
9111 | ||
954c1994 GS |
9112 | =cut |
9113 | */ | |
9114 | ||
46fc3d4c | 9115 | void |
7d5ea4e7 | 9116 | Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 9117 | { |
9118 | char *p; | |
9119 | char *q; | |
9120 | char *patend; | |
fc36a67e | 9121 | STRLEN origlen; |
46fc3d4c | 9122 | I32 svix = 0; |
c635e13b | 9123 | static char nullstr[] = "(null)"; |
9c5ffd7c | 9124 | SV *argsv = Nullsv; |
db79b45b JH |
9125 | bool has_utf8; /* has the result utf8? */ |
9126 | bool pat_utf8; /* the pattern is in utf8? */ | |
9127 | SV *nsv = Nullsv; | |
4151a5fe IZ |
9128 | /* Times 4: a decimal digit takes more than 3 binary digits. |
9129 | * NV_DIG: mantissa takes than many decimal digits. | |
9130 | * Plus 32: Playing safe. */ | |
9131 | char ebuf[IV_DIG * 4 + NV_DIG + 32]; | |
9132 | /* large enough for "%#.#f" --chip */ | |
9133 | /* what about long double NVs? --jhi */ | |
db79b45b JH |
9134 | |
9135 | has_utf8 = pat_utf8 = DO_UTF8(sv); | |
46fc3d4c | 9136 | |
9137 | /* no matter what, this is a string now */ | |
fc36a67e | 9138 | (void)SvPV_force(sv, origlen); |
46fc3d4c | 9139 | |
fc36a67e | 9140 | /* special-case "", "%s", and "%_" */ |
46fc3d4c | 9141 | if (patlen == 0) |
9142 | return; | |
fc36a67e | 9143 | if (patlen == 2 && pat[0] == '%') { |
9144 | switch (pat[1]) { | |
9145 | case 's': | |
c635e13b | 9146 | if (args) { |
9147 | char *s = va_arg(*args, char*); | |
9148 | sv_catpv(sv, s ? s : nullstr); | |
9149 | } | |
7e2040f0 | 9150 | else if (svix < svmax) { |
fc36a67e | 9151 | sv_catsv(sv, *svargs); |
7e2040f0 GS |
9152 | if (DO_UTF8(*svargs)) |
9153 | SvUTF8_on(sv); | |
9154 | } | |
fc36a67e | 9155 | return; |
9156 | case '_': | |
9157 | if (args) { | |
7e2040f0 GS |
9158 | argsv = va_arg(*args, SV*); |
9159 | sv_catsv(sv, argsv); | |
9160 | if (DO_UTF8(argsv)) | |
9161 | SvUTF8_on(sv); | |
fc36a67e | 9162 | return; |
9163 | } | |
9164 | /* See comment on '_' below */ | |
9165 | break; | |
9166 | } | |
46fc3d4c | 9167 | } |
9168 | ||
1d917b39 | 9169 | #ifndef USE_LONG_DOUBLE |
4151a5fe IZ |
9170 | /* special-case "%.<number>[gf]" */ |
9171 | if ( patlen <= 5 && pat[0] == '%' && pat[1] == '.' | |
9172 | && (pat[patlen-1] == 'g' || pat[patlen-1] == 'f') ) { | |
9173 | unsigned digits = 0; | |
9174 | const char *pp; | |
9175 | ||
9176 | pp = pat + 2; | |
9177 | while (*pp >= '0' && *pp <= '9') | |
9178 | digits = 10 * digits + (*pp++ - '0'); | |
028f8eaa | 9179 | if (pp - pat == (int)patlen - 1) { |
4151a5fe IZ |
9180 | NV nv; |
9181 | ||
9182 | if (args) | |
9183 | nv = (NV)va_arg(*args, double); | |
9184 | else if (svix < svmax) | |
9185 | nv = SvNV(*svargs); | |
9186 | else | |
9187 | return; | |
9188 | if (*pp == 'g') { | |
2873255c NC |
9189 | /* Add check for digits != 0 because it seems that some |
9190 | gconverts are buggy in this case, and we don't yet have | |
9191 | a Configure test for this. */ | |
9192 | if (digits && digits < sizeof(ebuf) - NV_DIG - 10) { | |
9193 | /* 0, point, slack */ | |
2e59c212 | 9194 | Gconvert(nv, (int)digits, 0, ebuf); |
4151a5fe IZ |
9195 | sv_catpv(sv, ebuf); |
9196 | if (*ebuf) /* May return an empty string for digits==0 */ | |
9197 | return; | |
9198 | } | |
9199 | } else if (!digits) { | |
9200 | STRLEN l; | |
9201 | ||
9202 | if ((p = F0convert(nv, ebuf + sizeof ebuf, &l))) { | |
9203 | sv_catpvn(sv, p, l); | |
9204 | return; | |
9205 | } | |
9206 | } | |
9207 | } | |
9208 | } | |
1d917b39 | 9209 | #endif /* !USE_LONG_DOUBLE */ |
4151a5fe | 9210 | |
2cf2cfc6 | 9211 | if (!args && svix < svmax && DO_UTF8(*svargs)) |
205f51d8 | 9212 | has_utf8 = TRUE; |
2cf2cfc6 | 9213 | |
46fc3d4c | 9214 | patend = (char*)pat + patlen; |
9215 | for (p = (char*)pat; p < patend; p = q) { | |
9216 | bool alt = FALSE; | |
9217 | bool left = FALSE; | |
b22c7a20 | 9218 | bool vectorize = FALSE; |
211dfcf1 | 9219 | bool vectorarg = FALSE; |
2cf2cfc6 | 9220 | bool vec_utf8 = FALSE; |
46fc3d4c | 9221 | char fill = ' '; |
9222 | char plus = 0; | |
9223 | char intsize = 0; | |
9224 | STRLEN width = 0; | |
fc36a67e | 9225 | STRLEN zeros = 0; |
46fc3d4c | 9226 | bool has_precis = FALSE; |
9227 | STRLEN precis = 0; | |
58e33a90 | 9228 | I32 osvix = svix; |
2cf2cfc6 | 9229 | bool is_utf8 = FALSE; /* is this item utf8? */ |
20f6aaab AS |
9230 | #ifdef HAS_LDBL_SPRINTF_BUG |
9231 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 | 9232 | with sfio - Allen <allens@cpan.org> */ |
20f6aaab AS |
9233 | bool fix_ldbl_sprintf_bug = FALSE; |
9234 | #endif | |
205f51d8 | 9235 | |
46fc3d4c | 9236 | char esignbuf[4]; |
ad391ad9 | 9237 | U8 utf8buf[UTF8_MAXLEN+1]; |
46fc3d4c | 9238 | STRLEN esignlen = 0; |
9239 | ||
9240 | char *eptr = Nullch; | |
fc36a67e | 9241 | STRLEN elen = 0; |
81f715da | 9242 | SV *vecsv = Nullsv; |
a05b299f | 9243 | U8 *vecstr = Null(U8*); |
b22c7a20 | 9244 | STRLEN veclen = 0; |
934abaf1 | 9245 | char c = 0; |
46fc3d4c | 9246 | int i; |
9c5ffd7c | 9247 | unsigned base = 0; |
8c8eb53c RB |
9248 | IV iv = 0; |
9249 | UV uv = 0; | |
9e5b023a JH |
9250 | /* we need a long double target in case HAS_LONG_DOUBLE but |
9251 | not USE_LONG_DOUBLE | |
9252 | */ | |
35fff930 | 9253 | #if defined(HAS_LONG_DOUBLE) && LONG_DOUBLESIZE > DOUBLESIZE |
9e5b023a JH |
9254 | long double nv; |
9255 | #else | |
65202027 | 9256 | NV nv; |
9e5b023a | 9257 | #endif |
46fc3d4c | 9258 | STRLEN have; |
9259 | STRLEN need; | |
9260 | STRLEN gap; | |
b22c7a20 GS |
9261 | char *dotstr = "."; |
9262 | STRLEN dotstrlen = 1; | |
211dfcf1 | 9263 | I32 efix = 0; /* explicit format parameter index */ |
eb3fce90 | 9264 | I32 ewix = 0; /* explicit width index */ |
211dfcf1 HS |
9265 | I32 epix = 0; /* explicit precision index */ |
9266 | I32 evix = 0; /* explicit vector index */ | |
eb3fce90 | 9267 | bool asterisk = FALSE; |
46fc3d4c | 9268 | |
211dfcf1 | 9269 | /* echo everything up to the next format specification */ |
46fc3d4c | 9270 | for (q = p; q < patend && *q != '%'; ++q) ; |
9271 | if (q > p) { | |
db79b45b JH |
9272 | if (has_utf8 && !pat_utf8) |
9273 | sv_catpvn_utf8_upgrade(sv, p, q - p, nsv); | |
9274 | else | |
9275 | sv_catpvn(sv, p, q - p); | |
46fc3d4c | 9276 | p = q; |
9277 | } | |
9278 | if (q++ >= patend) | |
9279 | break; | |
9280 | ||
211dfcf1 HS |
9281 | /* |
9282 | We allow format specification elements in this order: | |
9283 | \d+\$ explicit format parameter index | |
9284 | [-+ 0#]+ flags | |
a472f209 | 9285 | v|\*(\d+\$)?v vector with optional (optionally specified) arg |
f3583277 | 9286 | 0 flag (as above): repeated to allow "v02" |
211dfcf1 HS |
9287 | \d+|\*(\d+\$)? width using optional (optionally specified) arg |
9288 | \.(\d*|\*(\d+\$)?) precision using optional (optionally specified) arg | |
9289 | [hlqLV] size | |
9290 | [%bcdefginopsux_DFOUX] format (mandatory) | |
9291 | */ | |
9292 | if (EXPECT_NUMBER(q, width)) { | |
9293 | if (*q == '$') { | |
9294 | ++q; | |
9295 | efix = width; | |
9296 | } else { | |
9297 | goto gotwidth; | |
9298 | } | |
9299 | } | |
9300 | ||
fc36a67e | 9301 | /* FLAGS */ |
9302 | ||
46fc3d4c | 9303 | while (*q) { |
9304 | switch (*q) { | |
9305 | case ' ': | |
9306 | case '+': | |
9307 | plus = *q++; | |
9308 | continue; | |
9309 | ||
9310 | case '-': | |
9311 | left = TRUE; | |
9312 | q++; | |
9313 | continue; | |
9314 | ||
9315 | case '0': | |
9316 | fill = *q++; | |
9317 | continue; | |
9318 | ||
9319 | case '#': | |
9320 | alt = TRUE; | |
9321 | q++; | |
9322 | continue; | |
9323 | ||
fc36a67e | 9324 | default: |
9325 | break; | |
9326 | } | |
9327 | break; | |
9328 | } | |
46fc3d4c | 9329 | |
211dfcf1 | 9330 | tryasterisk: |
eb3fce90 | 9331 | if (*q == '*') { |
211dfcf1 HS |
9332 | q++; |
9333 | if (EXPECT_NUMBER(q, ewix)) | |
9334 | if (*q++ != '$') | |
9335 | goto unknown; | |
eb3fce90 | 9336 | asterisk = TRUE; |
211dfcf1 HS |
9337 | } |
9338 | if (*q == 'v') { | |
eb3fce90 | 9339 | q++; |
211dfcf1 HS |
9340 | if (vectorize) |
9341 | goto unknown; | |
9cbac4c7 | 9342 | if ((vectorarg = asterisk)) { |
211dfcf1 HS |
9343 | evix = ewix; |
9344 | ewix = 0; | |
9345 | asterisk = FALSE; | |
9346 | } | |
9347 | vectorize = TRUE; | |
9348 | goto tryasterisk; | |
eb3fce90 JH |
9349 | } |
9350 | ||
211dfcf1 | 9351 | if (!asterisk) |
7a5fa8a2 | 9352 | if( *q == '0' ) |
f3583277 | 9353 | fill = *q++; |
211dfcf1 HS |
9354 | EXPECT_NUMBER(q, width); |
9355 | ||
9356 | if (vectorize) { | |
9357 | if (vectorarg) { | |
9358 | if (args) | |
9359 | vecsv = va_arg(*args, SV*); | |
9360 | else | |
9361 | vecsv = (evix ? evix <= svmax : svix < svmax) ? | |
3a7a539e | 9362 | svargs[evix ? evix-1 : svix++] : &PL_sv_undef; |
4459522c | 9363 | dotstr = SvPVx(vecsv, dotstrlen); |
211dfcf1 | 9364 | if (DO_UTF8(vecsv)) |
2cf2cfc6 | 9365 | is_utf8 = TRUE; |
211dfcf1 HS |
9366 | } |
9367 | if (args) { | |
9368 | vecsv = va_arg(*args, SV*); | |
9369 | vecstr = (U8*)SvPVx(vecsv,veclen); | |
2cf2cfc6 | 9370 | vec_utf8 = DO_UTF8(vecsv); |
eb3fce90 | 9371 | } |
211dfcf1 HS |
9372 | else if (efix ? efix <= svmax : svix < svmax) { |
9373 | vecsv = svargs[efix ? efix-1 : svix++]; | |
9374 | vecstr = (U8*)SvPVx(vecsv,veclen); | |
2cf2cfc6 | 9375 | vec_utf8 = DO_UTF8(vecsv); |
d7aa5382 JP |
9376 | /* if this is a version object, we need to return the |
9377 | * stringified representation (which the SvPVX has | |
9378 | * already done for us), but not vectorize the args | |
9379 | */ | |
9380 | if ( *q == 'd' && sv_derived_from(vecsv,"version") ) | |
9381 | { | |
9382 | q++; /* skip past the rest of the %vd format */ | |
da6068d9 | 9383 | eptr = (char *) vecstr; |
d7aa5382 JP |
9384 | elen = strlen(eptr); |
9385 | vectorize=FALSE; | |
9386 | goto string; | |
9387 | } | |
211dfcf1 HS |
9388 | } |
9389 | else { | |
9390 | vecstr = (U8*)""; | |
9391 | veclen = 0; | |
9392 | } | |
eb3fce90 | 9393 | } |
fc36a67e | 9394 | |
eb3fce90 | 9395 | if (asterisk) { |
fc36a67e | 9396 | if (args) |
9397 | i = va_arg(*args, int); | |
9398 | else | |
eb3fce90 JH |
9399 | i = (ewix ? ewix <= svmax : svix < svmax) ? |
9400 | SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 9401 | left |= (i < 0); |
9402 | width = (i < 0) ? -i : i; | |
fc36a67e | 9403 | } |
211dfcf1 | 9404 | gotwidth: |
fc36a67e | 9405 | |
9406 | /* PRECISION */ | |
46fc3d4c | 9407 | |
fc36a67e | 9408 | if (*q == '.') { |
9409 | q++; | |
9410 | if (*q == '*') { | |
211dfcf1 | 9411 | q++; |
7b8dd722 HS |
9412 | if (EXPECT_NUMBER(q, epix) && *q++ != '$') |
9413 | goto unknown; | |
9414 | /* XXX: todo, support specified precision parameter */ | |
9415 | if (epix) | |
211dfcf1 | 9416 | goto unknown; |
46fc3d4c | 9417 | if (args) |
9418 | i = va_arg(*args, int); | |
9419 | else | |
eb3fce90 JH |
9420 | i = (ewix ? ewix <= svmax : svix < svmax) |
9421 | ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 9422 | precis = (i < 0) ? 0 : i; |
fc36a67e | 9423 | } |
9424 | else { | |
9425 | precis = 0; | |
9426 | while (isDIGIT(*q)) | |
9427 | precis = precis * 10 + (*q++ - '0'); | |
9428 | } | |
9429 | has_precis = TRUE; | |
9430 | } | |
46fc3d4c | 9431 | |
fc36a67e | 9432 | /* SIZE */ |
46fc3d4c | 9433 | |
fc36a67e | 9434 | switch (*q) { |
c623ac67 GS |
9435 | #ifdef WIN32 |
9436 | case 'I': /* Ix, I32x, and I64x */ | |
9437 | # ifdef WIN64 | |
9438 | if (q[1] == '6' && q[2] == '4') { | |
9439 | q += 3; | |
9440 | intsize = 'q'; | |
9441 | break; | |
9442 | } | |
9443 | # endif | |
9444 | if (q[1] == '3' && q[2] == '2') { | |
9445 | q += 3; | |
9446 | break; | |
9447 | } | |
9448 | # ifdef WIN64 | |
9449 | intsize = 'q'; | |
9450 | # endif | |
9451 | q++; | |
9452 | break; | |
9453 | #endif | |
9e5b023a | 9454 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
6f9bb7fd | 9455 | case 'L': /* Ld */ |
e5c81feb | 9456 | /* FALL THROUGH */ |
e5c81feb | 9457 | #ifdef HAS_QUAD |
6f9bb7fd | 9458 | case 'q': /* qd */ |
9e5b023a | 9459 | #endif |
6f9bb7fd GS |
9460 | intsize = 'q'; |
9461 | q++; | |
9462 | break; | |
9463 | #endif | |
fc36a67e | 9464 | case 'l': |
9e5b023a | 9465 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
205f51d8 | 9466 | if (*(q + 1) == 'l') { /* lld, llf */ |
fc36a67e | 9467 | intsize = 'q'; |
9468 | q += 2; | |
46fc3d4c | 9469 | break; |
cf2093f6 | 9470 | } |
fc36a67e | 9471 | #endif |
6f9bb7fd | 9472 | /* FALL THROUGH */ |
fc36a67e | 9473 | case 'h': |
cf2093f6 | 9474 | /* FALL THROUGH */ |
fc36a67e | 9475 | case 'V': |
9476 | intsize = *q++; | |
46fc3d4c | 9477 | break; |
9478 | } | |
9479 | ||
fc36a67e | 9480 | /* CONVERSION */ |
9481 | ||
211dfcf1 HS |
9482 | if (*q == '%') { |
9483 | eptr = q++; | |
9484 | elen = 1; | |
9485 | goto string; | |
9486 | } | |
9487 | ||
be75b157 HS |
9488 | if (vectorize) |
9489 | argsv = vecsv; | |
9490 | else if (!args) | |
211dfcf1 HS |
9491 | argsv = (efix ? efix <= svmax : svix < svmax) ? |
9492 | svargs[efix ? efix-1 : svix++] : &PL_sv_undef; | |
9493 | ||
46fc3d4c | 9494 | switch (c = *q++) { |
9495 | ||
9496 | /* STRINGS */ | |
9497 | ||
46fc3d4c | 9498 | case 'c': |
be75b157 | 9499 | uv = (args && !vectorize) ? va_arg(*args, int) : SvIVx(argsv); |
1bd104fb JH |
9500 | if ((uv > 255 || |
9501 | (!UNI_IS_INVARIANT(uv) && SvUTF8(sv))) | |
0064a8a9 | 9502 | && !IN_BYTES) { |
dfe13c55 | 9503 | eptr = (char*)utf8buf; |
9041c2e3 | 9504 | elen = uvchr_to_utf8((U8*)eptr, uv) - utf8buf; |
2cf2cfc6 | 9505 | is_utf8 = TRUE; |
7e2040f0 GS |
9506 | } |
9507 | else { | |
9508 | c = (char)uv; | |
9509 | eptr = &c; | |
9510 | elen = 1; | |
a0ed51b3 | 9511 | } |
46fc3d4c | 9512 | goto string; |
9513 | ||
46fc3d4c | 9514 | case 's': |
be75b157 | 9515 | if (args && !vectorize) { |
fc36a67e | 9516 | eptr = va_arg(*args, char*); |
c635e13b | 9517 | if (eptr) |
1d7c1841 GS |
9518 | #ifdef MACOS_TRADITIONAL |
9519 | /* On MacOS, %#s format is used for Pascal strings */ | |
9520 | if (alt) | |
9521 | elen = *eptr++; | |
9522 | else | |
9523 | #endif | |
c635e13b | 9524 | elen = strlen(eptr); |
9525 | else { | |
9526 | eptr = nullstr; | |
9527 | elen = sizeof nullstr - 1; | |
9528 | } | |
46fc3d4c | 9529 | } |
211dfcf1 | 9530 | else { |
7e2040f0 GS |
9531 | eptr = SvPVx(argsv, elen); |
9532 | if (DO_UTF8(argsv)) { | |
a0ed51b3 LW |
9533 | if (has_precis && precis < elen) { |
9534 | I32 p = precis; | |
7e2040f0 | 9535 | sv_pos_u2b(argsv, &p, 0); /* sticks at end */ |
a0ed51b3 LW |
9536 | precis = p; |
9537 | } | |
9538 | if (width) { /* fudge width (can't fudge elen) */ | |
7e2040f0 | 9539 | width += elen - sv_len_utf8(argsv); |
a0ed51b3 | 9540 | } |
2cf2cfc6 | 9541 | is_utf8 = TRUE; |
a0ed51b3 LW |
9542 | } |
9543 | } | |
46fc3d4c | 9544 | goto string; |
9545 | ||
fc36a67e | 9546 | case '_': |
9547 | /* | |
9548 | * The "%_" hack might have to be changed someday, | |
9549 | * if ISO or ANSI decide to use '_' for something. | |
9550 | * So we keep it hidden from users' code. | |
9551 | */ | |
be75b157 | 9552 | if (!args || vectorize) |
fc36a67e | 9553 | goto unknown; |
211dfcf1 | 9554 | argsv = va_arg(*args, SV*); |
7e2040f0 GS |
9555 | eptr = SvPVx(argsv, elen); |
9556 | if (DO_UTF8(argsv)) | |
2cf2cfc6 | 9557 | is_utf8 = TRUE; |
fc36a67e | 9558 | |
46fc3d4c | 9559 | string: |
b22c7a20 | 9560 | vectorize = FALSE; |
46fc3d4c | 9561 | if (has_precis && elen > precis) |
9562 | elen = precis; | |
9563 | break; | |
9564 | ||
9565 | /* INTEGERS */ | |
9566 | ||
fc36a67e | 9567 | case 'p': |
be75b157 | 9568 | if (alt || vectorize) |
c2e66d9e | 9569 | goto unknown; |
211dfcf1 | 9570 | uv = PTR2UV(args ? va_arg(*args, void*) : argsv); |
fc36a67e | 9571 | base = 16; |
9572 | goto integer; | |
9573 | ||
46fc3d4c | 9574 | case 'D': |
29fe7a80 | 9575 | #ifdef IV_IS_QUAD |
22f3ae8c | 9576 | intsize = 'q'; |
29fe7a80 | 9577 | #else |
46fc3d4c | 9578 | intsize = 'l'; |
29fe7a80 | 9579 | #endif |
46fc3d4c | 9580 | /* FALL THROUGH */ |
9581 | case 'd': | |
9582 | case 'i': | |
b22c7a20 | 9583 | if (vectorize) { |
ba210ebe | 9584 | STRLEN ulen; |
211dfcf1 HS |
9585 | if (!veclen) |
9586 | continue; | |
2cf2cfc6 A |
9587 | if (vec_utf8) |
9588 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
9589 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 9590 | else { |
e83d50c9 | 9591 | uv = *vecstr; |
b22c7a20 GS |
9592 | ulen = 1; |
9593 | } | |
9594 | vecstr += ulen; | |
9595 | veclen -= ulen; | |
e83d50c9 JP |
9596 | if (plus) |
9597 | esignbuf[esignlen++] = plus; | |
b22c7a20 GS |
9598 | } |
9599 | else if (args) { | |
46fc3d4c | 9600 | switch (intsize) { |
9601 | case 'h': iv = (short)va_arg(*args, int); break; | |
46fc3d4c | 9602 | case 'l': iv = va_arg(*args, long); break; |
fc36a67e | 9603 | case 'V': iv = va_arg(*args, IV); break; |
b10c0dba | 9604 | default: iv = va_arg(*args, int); break; |
cf2093f6 JH |
9605 | #ifdef HAS_QUAD |
9606 | case 'q': iv = va_arg(*args, Quad_t); break; | |
9607 | #endif | |
46fc3d4c | 9608 | } |
9609 | } | |
9610 | else { | |
b10c0dba | 9611 | IV tiv = SvIVx(argsv); /* work around GCC bug #13488 */ |
46fc3d4c | 9612 | switch (intsize) { |
b10c0dba MHM |
9613 | case 'h': iv = (short)tiv; break; |
9614 | case 'l': iv = (long)tiv; break; | |
9615 | case 'V': | |
9616 | default: iv = tiv; break; | |
cf2093f6 | 9617 | #ifdef HAS_QUAD |
b10c0dba | 9618 | case 'q': iv = (Quad_t)tiv; break; |
cf2093f6 | 9619 | #endif |
46fc3d4c | 9620 | } |
9621 | } | |
e83d50c9 JP |
9622 | if ( !vectorize ) /* we already set uv above */ |
9623 | { | |
9624 | if (iv >= 0) { | |
9625 | uv = iv; | |
9626 | if (plus) | |
9627 | esignbuf[esignlen++] = plus; | |
9628 | } | |
9629 | else { | |
9630 | uv = -iv; | |
9631 | esignbuf[esignlen++] = '-'; | |
9632 | } | |
46fc3d4c | 9633 | } |
9634 | base = 10; | |
9635 | goto integer; | |
9636 | ||
fc36a67e | 9637 | case 'U': |
29fe7a80 | 9638 | #ifdef IV_IS_QUAD |
22f3ae8c | 9639 | intsize = 'q'; |
29fe7a80 | 9640 | #else |
fc36a67e | 9641 | intsize = 'l'; |
29fe7a80 | 9642 | #endif |
fc36a67e | 9643 | /* FALL THROUGH */ |
9644 | case 'u': | |
9645 | base = 10; | |
9646 | goto uns_integer; | |
9647 | ||
4f19785b WSI |
9648 | case 'b': |
9649 | base = 2; | |
9650 | goto uns_integer; | |
9651 | ||
46fc3d4c | 9652 | case 'O': |
29fe7a80 | 9653 | #ifdef IV_IS_QUAD |
22f3ae8c | 9654 | intsize = 'q'; |
29fe7a80 | 9655 | #else |
46fc3d4c | 9656 | intsize = 'l'; |
29fe7a80 | 9657 | #endif |
46fc3d4c | 9658 | /* FALL THROUGH */ |
9659 | case 'o': | |
9660 | base = 8; | |
9661 | goto uns_integer; | |
9662 | ||
9663 | case 'X': | |
46fc3d4c | 9664 | case 'x': |
9665 | base = 16; | |
46fc3d4c | 9666 | |
9667 | uns_integer: | |
b22c7a20 | 9668 | if (vectorize) { |
ba210ebe | 9669 | STRLEN ulen; |
b22c7a20 | 9670 | vector: |
211dfcf1 HS |
9671 | if (!veclen) |
9672 | continue; | |
2cf2cfc6 A |
9673 | if (vec_utf8) |
9674 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
9675 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 9676 | else { |
a05b299f | 9677 | uv = *vecstr; |
b22c7a20 GS |
9678 | ulen = 1; |
9679 | } | |
9680 | vecstr += ulen; | |
9681 | veclen -= ulen; | |
9682 | } | |
9683 | else if (args) { | |
46fc3d4c | 9684 | switch (intsize) { |
9685 | case 'h': uv = (unsigned short)va_arg(*args, unsigned); break; | |
46fc3d4c | 9686 | case 'l': uv = va_arg(*args, unsigned long); break; |
fc36a67e | 9687 | case 'V': uv = va_arg(*args, UV); break; |
b10c0dba | 9688 | default: uv = va_arg(*args, unsigned); break; |
cf2093f6 | 9689 | #ifdef HAS_QUAD |
9e3321a5 | 9690 | case 'q': uv = va_arg(*args, Uquad_t); break; |
cf2093f6 | 9691 | #endif |
46fc3d4c | 9692 | } |
9693 | } | |
9694 | else { | |
b10c0dba | 9695 | UV tuv = SvUVx(argsv); /* work around GCC bug #13488 */ |
46fc3d4c | 9696 | switch (intsize) { |
b10c0dba MHM |
9697 | case 'h': uv = (unsigned short)tuv; break; |
9698 | case 'l': uv = (unsigned long)tuv; break; | |
9699 | case 'V': | |
9700 | default: uv = tuv; break; | |
cf2093f6 | 9701 | #ifdef HAS_QUAD |
b10c0dba | 9702 | case 'q': uv = (Uquad_t)tuv; break; |
cf2093f6 | 9703 | #endif |
46fc3d4c | 9704 | } |
9705 | } | |
9706 | ||
9707 | integer: | |
46fc3d4c | 9708 | eptr = ebuf + sizeof ebuf; |
fc36a67e | 9709 | switch (base) { |
9710 | unsigned dig; | |
9711 | case 16: | |
c10ed8b9 HS |
9712 | if (!uv) |
9713 | alt = FALSE; | |
1d7c1841 GS |
9714 | p = (char*)((c == 'X') |
9715 | ? "0123456789ABCDEF" : "0123456789abcdef"); | |
fc36a67e | 9716 | do { |
9717 | dig = uv & 15; | |
9718 | *--eptr = p[dig]; | |
9719 | } while (uv >>= 4); | |
9720 | if (alt) { | |
46fc3d4c | 9721 | esignbuf[esignlen++] = '0'; |
fc36a67e | 9722 | esignbuf[esignlen++] = c; /* 'x' or 'X' */ |
46fc3d4c | 9723 | } |
fc36a67e | 9724 | break; |
9725 | case 8: | |
9726 | do { | |
9727 | dig = uv & 7; | |
9728 | *--eptr = '0' + dig; | |
9729 | } while (uv >>= 3); | |
9730 | if (alt && *eptr != '0') | |
9731 | *--eptr = '0'; | |
9732 | break; | |
4f19785b WSI |
9733 | case 2: |
9734 | do { | |
9735 | dig = uv & 1; | |
9736 | *--eptr = '0' + dig; | |
9737 | } while (uv >>= 1); | |
eda88b6d JH |
9738 | if (alt) { |
9739 | esignbuf[esignlen++] = '0'; | |
7481bb52 | 9740 | esignbuf[esignlen++] = 'b'; |
eda88b6d | 9741 | } |
4f19785b | 9742 | break; |
fc36a67e | 9743 | default: /* it had better be ten or less */ |
6bc102ca | 9744 | #if defined(PERL_Y2KWARN) |
e476b1b5 | 9745 | if (ckWARN(WARN_Y2K)) { |
6bc102ca GS |
9746 | STRLEN n; |
9747 | char *s = SvPV(sv,n); | |
9748 | if (n >= 2 && s[n-2] == '1' && s[n-1] == '9' | |
9749 | && (n == 2 || !isDIGIT(s[n-3]))) | |
9750 | { | |
9014280d | 9751 | Perl_warner(aTHX_ packWARN(WARN_Y2K), |
6bc102ca GS |
9752 | "Possible Y2K bug: %%%c %s", |
9753 | c, "format string following '19'"); | |
9754 | } | |
9755 | } | |
9756 | #endif | |
fc36a67e | 9757 | do { |
9758 | dig = uv % base; | |
9759 | *--eptr = '0' + dig; | |
9760 | } while (uv /= base); | |
9761 | break; | |
46fc3d4c | 9762 | } |
9763 | elen = (ebuf + sizeof ebuf) - eptr; | |
c10ed8b9 HS |
9764 | if (has_precis) { |
9765 | if (precis > elen) | |
9766 | zeros = precis - elen; | |
9767 | else if (precis == 0 && elen == 1 && *eptr == '0') | |
9768 | elen = 0; | |
9769 | } | |
46fc3d4c | 9770 | break; |
9771 | ||
9772 | /* FLOATING POINT */ | |
9773 | ||
fc36a67e | 9774 | case 'F': |
9775 | c = 'f'; /* maybe %F isn't supported here */ | |
9776 | /* FALL THROUGH */ | |
46fc3d4c | 9777 | case 'e': case 'E': |
fc36a67e | 9778 | case 'f': |
46fc3d4c | 9779 | case 'g': case 'G': |
9780 | ||
9781 | /* This is evil, but floating point is even more evil */ | |
9782 | ||
9e5b023a JH |
9783 | /* for SV-style calling, we can only get NV |
9784 | for C-style calling, we assume %f is double; | |
9785 | for simplicity we allow any of %Lf, %llf, %qf for long double | |
9786 | */ | |
9787 | switch (intsize) { | |
9788 | case 'V': | |
9789 | #if defined(USE_LONG_DOUBLE) | |
9790 | intsize = 'q'; | |
9791 | #endif | |
9792 | break; | |
8a2e3f14 | 9793 | /* [perl #20339] - we should accept and ignore %lf rather than die */ |
00e17364 HS |
9794 | case 'l': |
9795 | /* FALL THROUGH */ | |
9e5b023a JH |
9796 | default: |
9797 | #if defined(USE_LONG_DOUBLE) | |
9798 | intsize = args ? 0 : 'q'; | |
9799 | #endif | |
9800 | break; | |
9801 | case 'q': | |
9802 | #if defined(HAS_LONG_DOUBLE) | |
9803 | break; | |
9804 | #else | |
9805 | /* FALL THROUGH */ | |
9806 | #endif | |
9807 | case 'h': | |
9e5b023a JH |
9808 | goto unknown; |
9809 | } | |
9810 | ||
9811 | /* now we need (long double) if intsize == 'q', else (double) */ | |
be75b157 | 9812 | nv = (args && !vectorize) ? |
35fff930 JH |
9813 | #if LONG_DOUBLESIZE > DOUBLESIZE |
9814 | intsize == 'q' ? | |
205f51d8 AS |
9815 | va_arg(*args, long double) : |
9816 | va_arg(*args, double) | |
35fff930 | 9817 | #else |
205f51d8 | 9818 | va_arg(*args, double) |
35fff930 | 9819 | #endif |
9e5b023a | 9820 | : SvNVx(argsv); |
fc36a67e | 9821 | |
9822 | need = 0; | |
be75b157 | 9823 | vectorize = FALSE; |
fc36a67e | 9824 | if (c != 'e' && c != 'E') { |
9825 | i = PERL_INT_MIN; | |
9e5b023a JH |
9826 | /* FIXME: if HAS_LONG_DOUBLE but not USE_LONG_DOUBLE this |
9827 | will cast our (long double) to (double) */ | |
73b309ea | 9828 | (void)Perl_frexp(nv, &i); |
fc36a67e | 9829 | if (i == PERL_INT_MIN) |
cea2e8a9 | 9830 | Perl_die(aTHX_ "panic: frexp"); |
c635e13b | 9831 | if (i > 0) |
fc36a67e | 9832 | need = BIT_DIGITS(i); |
9833 | } | |
9834 | need += has_precis ? precis : 6; /* known default */ | |
20f6aaab | 9835 | |
fc36a67e | 9836 | if (need < width) |
9837 | need = width; | |
9838 | ||
20f6aaab AS |
9839 | #ifdef HAS_LDBL_SPRINTF_BUG |
9840 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 AS |
9841 | with sfio - Allen <allens@cpan.org> */ |
9842 | ||
9843 | # ifdef DBL_MAX | |
9844 | # define MY_DBL_MAX DBL_MAX | |
9845 | # else /* XXX guessing! HUGE_VAL may be defined as infinity, so not using */ | |
9846 | # if DOUBLESIZE >= 8 | |
9847 | # define MY_DBL_MAX 1.7976931348623157E+308L | |
9848 | # else | |
9849 | # define MY_DBL_MAX 3.40282347E+38L | |
9850 | # endif | |
9851 | # endif | |
9852 | ||
9853 | # ifdef HAS_LDBL_SPRINTF_BUG_LESS1 /* only between -1L & 1L - Allen */ | |
9854 | # define MY_DBL_MAX_BUG 1L | |
20f6aaab | 9855 | # else |
205f51d8 | 9856 | # define MY_DBL_MAX_BUG MY_DBL_MAX |
20f6aaab | 9857 | # endif |
20f6aaab | 9858 | |
205f51d8 AS |
9859 | # ifdef DBL_MIN |
9860 | # define MY_DBL_MIN DBL_MIN | |
9861 | # else /* XXX guessing! -Allen */ | |
9862 | # if DOUBLESIZE >= 8 | |
9863 | # define MY_DBL_MIN 2.2250738585072014E-308L | |
9864 | # else | |
9865 | # define MY_DBL_MIN 1.17549435E-38L | |
9866 | # endif | |
9867 | # endif | |
20f6aaab | 9868 | |
205f51d8 AS |
9869 | if ((intsize == 'q') && (c == 'f') && |
9870 | ((nv < MY_DBL_MAX_BUG) && (nv > -MY_DBL_MAX_BUG)) && | |
9871 | (need < DBL_DIG)) { | |
9872 | /* it's going to be short enough that | |
9873 | * long double precision is not needed */ | |
9874 | ||
9875 | if ((nv <= 0L) && (nv >= -0L)) | |
9876 | fix_ldbl_sprintf_bug = TRUE; /* 0 is 0 - easiest */ | |
9877 | else { | |
9878 | /* would use Perl_fp_class as a double-check but not | |
9879 | * functional on IRIX - see perl.h comments */ | |
9880 | ||
9881 | if ((nv >= MY_DBL_MIN) || (nv <= -MY_DBL_MIN)) { | |
9882 | /* It's within the range that a double can represent */ | |
9883 | #if defined(DBL_MAX) && !defined(DBL_MIN) | |
9884 | if ((nv >= ((long double)1/DBL_MAX)) || | |
9885 | (nv <= (-(long double)1/DBL_MAX))) | |
20f6aaab | 9886 | #endif |
205f51d8 | 9887 | fix_ldbl_sprintf_bug = TRUE; |
20f6aaab | 9888 | } |
205f51d8 AS |
9889 | } |
9890 | if (fix_ldbl_sprintf_bug == TRUE) { | |
9891 | double temp; | |
9892 | ||
9893 | intsize = 0; | |
9894 | temp = (double)nv; | |
9895 | nv = (NV)temp; | |
9896 | } | |
20f6aaab | 9897 | } |
205f51d8 AS |
9898 | |
9899 | # undef MY_DBL_MAX | |
9900 | # undef MY_DBL_MAX_BUG | |
9901 | # undef MY_DBL_MIN | |
9902 | ||
20f6aaab AS |
9903 | #endif /* HAS_LDBL_SPRINTF_BUG */ |
9904 | ||
46fc3d4c | 9905 | need += 20; /* fudge factor */ |
80252599 GS |
9906 | if (PL_efloatsize < need) { |
9907 | Safefree(PL_efloatbuf); | |
9908 | PL_efloatsize = need + 20; /* more fudge */ | |
9909 | New(906, PL_efloatbuf, PL_efloatsize, char); | |
7d5ea4e7 | 9910 | PL_efloatbuf[0] = '\0'; |
46fc3d4c | 9911 | } |
9912 | ||
4151a5fe IZ |
9913 | if ( !(width || left || plus || alt) && fill != '0' |
9914 | && has_precis && intsize != 'q' ) { /* Shortcuts */ | |
2873255c NC |
9915 | /* See earlier comment about buggy Gconvert when digits, |
9916 | aka precis is 0 */ | |
9917 | if ( c == 'g' && precis) { | |
2e59c212 | 9918 | Gconvert((NV)nv, (int)precis, 0, PL_efloatbuf); |
4151a5fe IZ |
9919 | if (*PL_efloatbuf) /* May return an empty string for digits==0 */ |
9920 | goto float_converted; | |
9921 | } else if ( c == 'f' && !precis) { | |
9922 | if ((eptr = F0convert(nv, ebuf + sizeof ebuf, &elen))) | |
9923 | break; | |
9924 | } | |
9925 | } | |
46fc3d4c | 9926 | eptr = ebuf + sizeof ebuf; |
9927 | *--eptr = '\0'; | |
9928 | *--eptr = c; | |
9e5b023a JH |
9929 | /* FIXME: what to do if HAS_LONG_DOUBLE but not PERL_PRIfldbl? */ |
9930 | #if defined(HAS_LONG_DOUBLE) && defined(PERL_PRIfldbl) | |
9931 | if (intsize == 'q') { | |
e5c81feb JH |
9932 | /* Copy the one or more characters in a long double |
9933 | * format before the 'base' ([efgEFG]) character to | |
9934 | * the format string. */ | |
9935 | static char const prifldbl[] = PERL_PRIfldbl; | |
9936 | char const *p = prifldbl + sizeof(prifldbl) - 3; | |
9937 | while (p >= prifldbl) { *--eptr = *p--; } | |
cf2093f6 | 9938 | } |
65202027 | 9939 | #endif |
46fc3d4c | 9940 | if (has_precis) { |
9941 | base = precis; | |
9942 | do { *--eptr = '0' + (base % 10); } while (base /= 10); | |
9943 | *--eptr = '.'; | |
9944 | } | |
9945 | if (width) { | |
9946 | base = width; | |
9947 | do { *--eptr = '0' + (base % 10); } while (base /= 10); | |
9948 | } | |
9949 | if (fill == '0') | |
9950 | *--eptr = fill; | |
84902520 TB |
9951 | if (left) |
9952 | *--eptr = '-'; | |
46fc3d4c | 9953 | if (plus) |
9954 | *--eptr = plus; | |
9955 | if (alt) | |
9956 | *--eptr = '#'; | |
9957 | *--eptr = '%'; | |
9958 | ||
ff9121f8 JH |
9959 | /* No taint. Otherwise we are in the strange situation |
9960 | * where printf() taints but print($float) doesn't. | |
bda0f7a5 | 9961 | * --jhi */ |
9e5b023a JH |
9962 | #if defined(HAS_LONG_DOUBLE) |
9963 | if (intsize == 'q') | |
9964 | (void)sprintf(PL_efloatbuf, eptr, nv); | |
9965 | else | |
9966 | (void)sprintf(PL_efloatbuf, eptr, (double)nv); | |
9967 | #else | |
dd8482fc | 9968 | (void)sprintf(PL_efloatbuf, eptr, nv); |
9e5b023a | 9969 | #endif |
4151a5fe | 9970 | float_converted: |
80252599 GS |
9971 | eptr = PL_efloatbuf; |
9972 | elen = strlen(PL_efloatbuf); | |
46fc3d4c | 9973 | break; |
9974 | ||
fc36a67e | 9975 | /* SPECIAL */ |
9976 | ||
9977 | case 'n': | |
9978 | i = SvCUR(sv) - origlen; | |
be75b157 | 9979 | if (args && !vectorize) { |
c635e13b | 9980 | switch (intsize) { |
9981 | case 'h': *(va_arg(*args, short*)) = i; break; | |
9982 | default: *(va_arg(*args, int*)) = i; break; | |
9983 | case 'l': *(va_arg(*args, long*)) = i; break; | |
9984 | case 'V': *(va_arg(*args, IV*)) = i; break; | |
cf2093f6 JH |
9985 | #ifdef HAS_QUAD |
9986 | case 'q': *(va_arg(*args, Quad_t*)) = i; break; | |
9987 | #endif | |
c635e13b | 9988 | } |
fc36a67e | 9989 | } |
9dd79c3f | 9990 | else |
211dfcf1 | 9991 | sv_setuv_mg(argsv, (UV)i); |
be75b157 | 9992 | vectorize = FALSE; |
fc36a67e | 9993 | continue; /* not "break" */ |
9994 | ||
9995 | /* UNKNOWN */ | |
9996 | ||
46fc3d4c | 9997 | default: |
fc36a67e | 9998 | unknown: |
599cee73 | 9999 | if (!args && ckWARN(WARN_PRINTF) && |
533c011a | 10000 | (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) { |
c635e13b | 10001 | SV *msg = sv_newmortal(); |
35c1215d NC |
10002 | Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %sprintf: ", |
10003 | (PL_op->op_type == OP_PRTF) ? "" : "s"); | |
0f4b6630 | 10004 | if (c) { |
0f4b6630 | 10005 | if (isPRINT(c)) |
1c846c1f | 10006 | Perl_sv_catpvf(aTHX_ msg, |
0f4b6630 JH |
10007 | "\"%%%c\"", c & 0xFF); |
10008 | else | |
10009 | Perl_sv_catpvf(aTHX_ msg, | |
57def98f | 10010 | "\"%%\\%03"UVof"\"", |
0f4b6630 | 10011 | (UV)c & 0xFF); |
0f4b6630 | 10012 | } else |
c635e13b | 10013 | sv_catpv(msg, "end of string"); |
9014280d | 10014 | Perl_warner(aTHX_ packWARN(WARN_PRINTF), "%"SVf, msg); /* yes, this is reentrant */ |
c635e13b | 10015 | } |
fb73857a | 10016 | |
10017 | /* output mangled stuff ... */ | |
10018 | if (c == '\0') | |
10019 | --q; | |
46fc3d4c | 10020 | eptr = p; |
10021 | elen = q - p; | |
fb73857a | 10022 | |
10023 | /* ... right here, because formatting flags should not apply */ | |
10024 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
10025 | p = SvEND(sv); | |
4459522c | 10026 | Copy(eptr, p, elen, char); |
fb73857a | 10027 | p += elen; |
10028 | *p = '\0'; | |
10029 | SvCUR(sv) = p - SvPVX(sv); | |
58e33a90 | 10030 | svix = osvix; |
fb73857a | 10031 | continue; /* not "break" */ |
46fc3d4c | 10032 | } |
10033 | ||
6c94ec8b HS |
10034 | /* calculate width before utf8_upgrade changes it */ |
10035 | have = esignlen + zeros + elen; | |
10036 | ||
d2876be5 JH |
10037 | if (is_utf8 != has_utf8) { |
10038 | if (is_utf8) { | |
10039 | if (SvCUR(sv)) | |
10040 | sv_utf8_upgrade(sv); | |
10041 | } | |
10042 | else { | |
10043 | SV *nsv = sv_2mortal(newSVpvn(eptr, elen)); | |
10044 | sv_utf8_upgrade(nsv); | |
10045 | eptr = SvPVX(nsv); | |
10046 | elen = SvCUR(nsv); | |
10047 | } | |
10048 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
10049 | p = SvEND(sv); | |
10050 | *p = '\0'; | |
10051 | } | |
6af65485 | 10052 | |
46fc3d4c | 10053 | need = (have > width ? have : width); |
10054 | gap = need - have; | |
10055 | ||
b22c7a20 | 10056 | SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1); |
46fc3d4c | 10057 | p = SvEND(sv); |
10058 | if (esignlen && fill == '0') { | |
eb160463 | 10059 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 10060 | *p++ = esignbuf[i]; |
10061 | } | |
10062 | if (gap && !left) { | |
10063 | memset(p, fill, gap); | |
10064 | p += gap; | |
10065 | } | |
10066 | if (esignlen && fill != '0') { | |
eb160463 | 10067 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 10068 | *p++ = esignbuf[i]; |
10069 | } | |
fc36a67e | 10070 | if (zeros) { |
10071 | for (i = zeros; i; i--) | |
10072 | *p++ = '0'; | |
10073 | } | |
46fc3d4c | 10074 | if (elen) { |
4459522c | 10075 | Copy(eptr, p, elen, char); |
46fc3d4c | 10076 | p += elen; |
10077 | } | |
10078 | if (gap && left) { | |
10079 | memset(p, ' ', gap); | |
10080 | p += gap; | |
10081 | } | |
b22c7a20 GS |
10082 | if (vectorize) { |
10083 | if (veclen) { | |
4459522c | 10084 | Copy(dotstr, p, dotstrlen, char); |
b22c7a20 GS |
10085 | p += dotstrlen; |
10086 | } | |
10087 | else | |
10088 | vectorize = FALSE; /* done iterating over vecstr */ | |
10089 | } | |
2cf2cfc6 A |
10090 | if (is_utf8) |
10091 | has_utf8 = TRUE; | |
10092 | if (has_utf8) | |
7e2040f0 | 10093 | SvUTF8_on(sv); |
46fc3d4c | 10094 | *p = '\0'; |
10095 | SvCUR(sv) = p - SvPVX(sv); | |
b22c7a20 GS |
10096 | if (vectorize) { |
10097 | esignlen = 0; | |
10098 | goto vector; | |
10099 | } | |
46fc3d4c | 10100 | } |
10101 | } | |
51371543 | 10102 | |
645c22ef DM |
10103 | /* ========================================================================= |
10104 | ||
10105 | =head1 Cloning an interpreter | |
10106 | ||
10107 | All the macros and functions in this section are for the private use of | |
10108 | the main function, perl_clone(). | |
10109 | ||
10110 | The foo_dup() functions make an exact copy of an existing foo thinngy. | |
10111 | During the course of a cloning, a hash table is used to map old addresses | |
10112 | to new addresses. The table is created and manipulated with the | |
10113 | ptr_table_* functions. | |
10114 | ||
10115 | =cut | |
10116 | ||
10117 | ============================================================================*/ | |
10118 | ||
10119 | ||
1d7c1841 GS |
10120 | #if defined(USE_ITHREADS) |
10121 | ||
1d7c1841 GS |
10122 | #ifndef GpREFCNT_inc |
10123 | # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL) | |
10124 | #endif | |
10125 | ||
10126 | ||
d2d73c3e AB |
10127 | #define sv_dup_inc(s,t) SvREFCNT_inc(sv_dup(s,t)) |
10128 | #define av_dup(s,t) (AV*)sv_dup((SV*)s,t) | |
10129 | #define av_dup_inc(s,t) (AV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
10130 | #define hv_dup(s,t) (HV*)sv_dup((SV*)s,t) | |
10131 | #define hv_dup_inc(s,t) (HV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
10132 | #define cv_dup(s,t) (CV*)sv_dup((SV*)s,t) | |
10133 | #define cv_dup_inc(s,t) (CV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
10134 | #define io_dup(s,t) (IO*)sv_dup((SV*)s,t) | |
10135 | #define io_dup_inc(s,t) (IO*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
10136 | #define gv_dup(s,t) (GV*)sv_dup((SV*)s,t) | |
10137 | #define gv_dup_inc(s,t) (GV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
1d7c1841 GS |
10138 | #define SAVEPV(p) (p ? savepv(p) : Nullch) |
10139 | #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch) | |
8cf8f3d1 | 10140 | |
d2d73c3e | 10141 | |
d2f185dc AMS |
10142 | /* Duplicate a regexp. Required reading: pregcomp() and pregfree() in |
10143 | regcomp.c. AMS 20010712 */ | |
645c22ef | 10144 | |
1d7c1841 | 10145 | REGEXP * |
a8fc9800 | 10146 | Perl_re_dup(pTHX_ REGEXP *r, CLONE_PARAMS *param) |
1d7c1841 | 10147 | { |
d2f185dc AMS |
10148 | REGEXP *ret; |
10149 | int i, len, npar; | |
10150 | struct reg_substr_datum *s; | |
10151 | ||
10152 | if (!r) | |
10153 | return (REGEXP *)NULL; | |
10154 | ||
10155 | if ((ret = (REGEXP *)ptr_table_fetch(PL_ptr_table, r))) | |
10156 | return ret; | |
10157 | ||
10158 | len = r->offsets[0]; | |
10159 | npar = r->nparens+1; | |
10160 | ||
10161 | Newc(0, ret, sizeof(regexp) + (len+1)*sizeof(regnode), char, regexp); | |
10162 | Copy(r->program, ret->program, len+1, regnode); | |
10163 | ||
10164 | New(0, ret->startp, npar, I32); | |
10165 | Copy(r->startp, ret->startp, npar, I32); | |
10166 | New(0, ret->endp, npar, I32); | |
10167 | Copy(r->startp, ret->startp, npar, I32); | |
10168 | ||
d2f185dc AMS |
10169 | New(0, ret->substrs, 1, struct reg_substr_data); |
10170 | for (s = ret->substrs->data, i = 0; i < 3; i++, s++) { | |
10171 | s->min_offset = r->substrs->data[i].min_offset; | |
10172 | s->max_offset = r->substrs->data[i].max_offset; | |
10173 | s->substr = sv_dup_inc(r->substrs->data[i].substr, param); | |
33b8afdf | 10174 | s->utf8_substr = sv_dup_inc(r->substrs->data[i].utf8_substr, param); |
d2f185dc AMS |
10175 | } |
10176 | ||
70612e96 | 10177 | ret->regstclass = NULL; |
d2f185dc AMS |
10178 | if (r->data) { |
10179 | struct reg_data *d; | |
10180 | int count = r->data->count; | |
10181 | ||
10182 | Newc(0, d, sizeof(struct reg_data) + count*sizeof(void *), | |
10183 | char, struct reg_data); | |
10184 | New(0, d->what, count, U8); | |
10185 | ||
10186 | d->count = count; | |
10187 | for (i = 0; i < count; i++) { | |
10188 | d->what[i] = r->data->what[i]; | |
10189 | switch (d->what[i]) { | |
10190 | case 's': | |
10191 | d->data[i] = sv_dup_inc((SV *)r->data->data[i], param); | |
10192 | break; | |
10193 | case 'p': | |
10194 | d->data[i] = av_dup_inc((AV *)r->data->data[i], param); | |
10195 | break; | |
10196 | case 'f': | |
10197 | /* This is cheating. */ | |
10198 | New(0, d->data[i], 1, struct regnode_charclass_class); | |
10199 | StructCopy(r->data->data[i], d->data[i], | |
10200 | struct regnode_charclass_class); | |
70612e96 | 10201 | ret->regstclass = (regnode*)d->data[i]; |
d2f185dc AMS |
10202 | break; |
10203 | case 'o': | |
33773810 AMS |
10204 | /* Compiled op trees are readonly, and can thus be |
10205 | shared without duplication. */ | |
9b978d73 DM |
10206 | d->data[i] = (void*)OpREFCNT_inc((OP*)r->data->data[i]); |
10207 | break; | |
d2f185dc AMS |
10208 | case 'n': |
10209 | d->data[i] = r->data->data[i]; | |
10210 | break; | |
10211 | } | |
10212 | } | |
10213 | ||
10214 | ret->data = d; | |
10215 | } | |
10216 | else | |
10217 | ret->data = NULL; | |
10218 | ||
10219 | New(0, ret->offsets, 2*len+1, U32); | |
10220 | Copy(r->offsets, ret->offsets, 2*len+1, U32); | |
10221 | ||
e01c5899 | 10222 | ret->precomp = SAVEPVN(r->precomp, r->prelen); |
d2f185dc AMS |
10223 | ret->refcnt = r->refcnt; |
10224 | ret->minlen = r->minlen; | |
10225 | ret->prelen = r->prelen; | |
10226 | ret->nparens = r->nparens; | |
10227 | ret->lastparen = r->lastparen; | |
10228 | ret->lastcloseparen = r->lastcloseparen; | |
10229 | ret->reganch = r->reganch; | |
10230 | ||
70612e96 RG |
10231 | ret->sublen = r->sublen; |
10232 | ||
10233 | if (RX_MATCH_COPIED(ret)) | |
e01c5899 | 10234 | ret->subbeg = SAVEPVN(r->subbeg, r->sublen); |
70612e96 RG |
10235 | else |
10236 | ret->subbeg = Nullch; | |
9a26048b NC |
10237 | #ifdef PERL_COPY_ON_WRITE |
10238 | ret->saved_copy = Nullsv; | |
10239 | #endif | |
70612e96 | 10240 | |
d2f185dc AMS |
10241 | ptr_table_store(PL_ptr_table, r, ret); |
10242 | return ret; | |
1d7c1841 GS |
10243 | } |
10244 | ||
d2d73c3e | 10245 | /* duplicate a file handle */ |
645c22ef | 10246 | |
1d7c1841 | 10247 | PerlIO * |
a8fc9800 | 10248 | Perl_fp_dup(pTHX_ PerlIO *fp, char type, CLONE_PARAMS *param) |
1d7c1841 GS |
10249 | { |
10250 | PerlIO *ret; | |
10251 | if (!fp) | |
10252 | return (PerlIO*)NULL; | |
10253 | ||
10254 | /* look for it in the table first */ | |
10255 | ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp); | |
10256 | if (ret) | |
10257 | return ret; | |
10258 | ||
10259 | /* create anew and remember what it is */ | |
ecdeb87c | 10260 | ret = PerlIO_fdupopen(aTHX_ fp, param, PERLIO_DUP_CLONE); |
1d7c1841 GS |
10261 | ptr_table_store(PL_ptr_table, fp, ret); |
10262 | return ret; | |
10263 | } | |
10264 | ||
645c22ef DM |
10265 | /* duplicate a directory handle */ |
10266 | ||
1d7c1841 GS |
10267 | DIR * |
10268 | Perl_dirp_dup(pTHX_ DIR *dp) | |
10269 | { | |
10270 | if (!dp) | |
10271 | return (DIR*)NULL; | |
10272 | /* XXX TODO */ | |
10273 | return dp; | |
10274 | } | |
10275 | ||
ff276b08 | 10276 | /* duplicate a typeglob */ |
645c22ef | 10277 | |
1d7c1841 | 10278 | GP * |
a8fc9800 | 10279 | Perl_gp_dup(pTHX_ GP *gp, CLONE_PARAMS* param) |
1d7c1841 GS |
10280 | { |
10281 | GP *ret; | |
10282 | if (!gp) | |
10283 | return (GP*)NULL; | |
10284 | /* look for it in the table first */ | |
10285 | ret = (GP*)ptr_table_fetch(PL_ptr_table, gp); | |
10286 | if (ret) | |
10287 | return ret; | |
10288 | ||
10289 | /* create anew and remember what it is */ | |
10290 | Newz(0, ret, 1, GP); | |
10291 | ptr_table_store(PL_ptr_table, gp, ret); | |
10292 | ||
10293 | /* clone */ | |
10294 | ret->gp_refcnt = 0; /* must be before any other dups! */ | |
d2d73c3e AB |
10295 | ret->gp_sv = sv_dup_inc(gp->gp_sv, param); |
10296 | ret->gp_io = io_dup_inc(gp->gp_io, param); | |
10297 | ret->gp_form = cv_dup_inc(gp->gp_form, param); | |
10298 | ret->gp_av = av_dup_inc(gp->gp_av, param); | |
10299 | ret->gp_hv = hv_dup_inc(gp->gp_hv, param); | |
10300 | ret->gp_egv = gv_dup(gp->gp_egv, param);/* GvEGV is not refcounted */ | |
10301 | ret->gp_cv = cv_dup_inc(gp->gp_cv, param); | |
1d7c1841 GS |
10302 | ret->gp_cvgen = gp->gp_cvgen; |
10303 | ret->gp_flags = gp->gp_flags; | |
10304 | ret->gp_line = gp->gp_line; | |
10305 | ret->gp_file = gp->gp_file; /* points to COP.cop_file */ | |
10306 | return ret; | |
10307 | } | |
10308 | ||
645c22ef DM |
10309 | /* duplicate a chain of magic */ |
10310 | ||
1d7c1841 | 10311 | MAGIC * |
a8fc9800 | 10312 | Perl_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS* param) |
1d7c1841 | 10313 | { |
cb359b41 JH |
10314 | MAGIC *mgprev = (MAGIC*)NULL; |
10315 | MAGIC *mgret; | |
1d7c1841 GS |
10316 | if (!mg) |
10317 | return (MAGIC*)NULL; | |
10318 | /* look for it in the table first */ | |
10319 | mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg); | |
10320 | if (mgret) | |
10321 | return mgret; | |
10322 | ||
10323 | for (; mg; mg = mg->mg_moremagic) { | |
10324 | MAGIC *nmg; | |
10325 | Newz(0, nmg, 1, MAGIC); | |
cb359b41 | 10326 | if (mgprev) |
1d7c1841 | 10327 | mgprev->mg_moremagic = nmg; |
cb359b41 JH |
10328 | else |
10329 | mgret = nmg; | |
1d7c1841 GS |
10330 | nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */ |
10331 | nmg->mg_private = mg->mg_private; | |
10332 | nmg->mg_type = mg->mg_type; | |
10333 | nmg->mg_flags = mg->mg_flags; | |
14befaf4 | 10334 | if (mg->mg_type == PERL_MAGIC_qr) { |
d2f185dc | 10335 | nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj, param); |
1d7c1841 | 10336 | } |
05bd4103 | 10337 | else if(mg->mg_type == PERL_MAGIC_backref) { |
fdc9a813 AE |
10338 | AV *av = (AV*) mg->mg_obj; |
10339 | SV **svp; | |
10340 | I32 i; | |
10341 | SvREFCNT_inc(nmg->mg_obj = (SV*)newAV()); | |
10342 | svp = AvARRAY(av); | |
10343 | for (i = AvFILLp(av); i >= 0; i--) { | |
3a81978b | 10344 | if (!svp[i]) continue; |
fdc9a813 AE |
10345 | av_push((AV*)nmg->mg_obj,sv_dup(svp[i],param)); |
10346 | } | |
05bd4103 | 10347 | } |
1d7c1841 GS |
10348 | else { |
10349 | nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED) | |
d2d73c3e AB |
10350 | ? sv_dup_inc(mg->mg_obj, param) |
10351 | : sv_dup(mg->mg_obj, param); | |
1d7c1841 GS |
10352 | } |
10353 | nmg->mg_len = mg->mg_len; | |
10354 | nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */ | |
14befaf4 | 10355 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
68795e93 | 10356 | if (mg->mg_len > 0) { |
1d7c1841 | 10357 | nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len); |
14befaf4 DM |
10358 | if (mg->mg_type == PERL_MAGIC_overload_table && |
10359 | AMT_AMAGIC((AMT*)mg->mg_ptr)) | |
10360 | { | |
1d7c1841 GS |
10361 | AMT *amtp = (AMT*)mg->mg_ptr; |
10362 | AMT *namtp = (AMT*)nmg->mg_ptr; | |
10363 | I32 i; | |
10364 | for (i = 1; i < NofAMmeth; i++) { | |
d2d73c3e | 10365 | namtp->table[i] = cv_dup_inc(amtp->table[i], param); |
1d7c1841 GS |
10366 | } |
10367 | } | |
10368 | } | |
10369 | else if (mg->mg_len == HEf_SVKEY) | |
d2d73c3e | 10370 | nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr, param); |
1d7c1841 | 10371 | } |
68795e93 NIS |
10372 | if ((mg->mg_flags & MGf_DUP) && mg->mg_virtual && mg->mg_virtual->svt_dup) { |
10373 | CALL_FPTR(nmg->mg_virtual->svt_dup)(aTHX_ nmg, param); | |
10374 | } | |
1d7c1841 GS |
10375 | mgprev = nmg; |
10376 | } | |
10377 | return mgret; | |
10378 | } | |
10379 | ||
645c22ef DM |
10380 | /* create a new pointer-mapping table */ |
10381 | ||
1d7c1841 GS |
10382 | PTR_TBL_t * |
10383 | Perl_ptr_table_new(pTHX) | |
10384 | { | |
10385 | PTR_TBL_t *tbl; | |
10386 | Newz(0, tbl, 1, PTR_TBL_t); | |
10387 | tbl->tbl_max = 511; | |
10388 | tbl->tbl_items = 0; | |
10389 | Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*); | |
10390 | return tbl; | |
10391 | } | |
10392 | ||
134ca3d6 DM |
10393 | #if (PTRSIZE == 8) |
10394 | # define PTR_TABLE_HASH(ptr) (PTR2UV(ptr) >> 3) | |
10395 | #else | |
10396 | # define PTR_TABLE_HASH(ptr) (PTR2UV(ptr) >> 2) | |
10397 | #endif | |
10398 | ||
645c22ef DM |
10399 | /* map an existing pointer using a table */ |
10400 | ||
1d7c1841 GS |
10401 | void * |
10402 | Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv) | |
10403 | { | |
10404 | PTR_TBL_ENT_t *tblent; | |
134ca3d6 | 10405 | UV hash = PTR_TABLE_HASH(sv); |
1d7c1841 GS |
10406 | assert(tbl); |
10407 | tblent = tbl->tbl_ary[hash & tbl->tbl_max]; | |
10408 | for (; tblent; tblent = tblent->next) { | |
10409 | if (tblent->oldval == sv) | |
10410 | return tblent->newval; | |
10411 | } | |
10412 | return (void*)NULL; | |
10413 | } | |
10414 | ||
645c22ef DM |
10415 | /* add a new entry to a pointer-mapping table */ |
10416 | ||
1d7c1841 GS |
10417 | void |
10418 | Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv) | |
10419 | { | |
10420 | PTR_TBL_ENT_t *tblent, **otblent; | |
10421 | /* XXX this may be pessimal on platforms where pointers aren't good | |
10422 | * hash values e.g. if they grow faster in the most significant | |
10423 | * bits */ | |
134ca3d6 | 10424 | UV hash = PTR_TABLE_HASH(oldv); |
14cade97 | 10425 | bool empty = 1; |
1d7c1841 GS |
10426 | |
10427 | assert(tbl); | |
10428 | otblent = &tbl->tbl_ary[hash & tbl->tbl_max]; | |
14cade97 | 10429 | for (tblent = *otblent; tblent; empty=0, tblent = tblent->next) { |
1d7c1841 GS |
10430 | if (tblent->oldval == oldv) { |
10431 | tblent->newval = newv; | |
1d7c1841 GS |
10432 | return; |
10433 | } | |
10434 | } | |
10435 | Newz(0, tblent, 1, PTR_TBL_ENT_t); | |
10436 | tblent->oldval = oldv; | |
10437 | tblent->newval = newv; | |
10438 | tblent->next = *otblent; | |
10439 | *otblent = tblent; | |
10440 | tbl->tbl_items++; | |
14cade97 | 10441 | if (!empty && tbl->tbl_items > tbl->tbl_max) |
1d7c1841 GS |
10442 | ptr_table_split(tbl); |
10443 | } | |
10444 | ||
645c22ef DM |
10445 | /* double the hash bucket size of an existing ptr table */ |
10446 | ||
1d7c1841 GS |
10447 | void |
10448 | Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl) | |
10449 | { | |
10450 | PTR_TBL_ENT_t **ary = tbl->tbl_ary; | |
10451 | UV oldsize = tbl->tbl_max + 1; | |
10452 | UV newsize = oldsize * 2; | |
10453 | UV i; | |
10454 | ||
10455 | Renew(ary, newsize, PTR_TBL_ENT_t*); | |
10456 | Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*); | |
10457 | tbl->tbl_max = --newsize; | |
10458 | tbl->tbl_ary = ary; | |
10459 | for (i=0; i < oldsize; i++, ary++) { | |
10460 | PTR_TBL_ENT_t **curentp, **entp, *ent; | |
10461 | if (!*ary) | |
10462 | continue; | |
10463 | curentp = ary + oldsize; | |
10464 | for (entp = ary, ent = *ary; ent; ent = *entp) { | |
134ca3d6 | 10465 | if ((newsize & PTR_TABLE_HASH(ent->oldval)) != i) { |
1d7c1841 GS |
10466 | *entp = ent->next; |
10467 | ent->next = *curentp; | |
10468 | *curentp = ent; | |
10469 | continue; | |
10470 | } | |
10471 | else | |
10472 | entp = &ent->next; | |
10473 | } | |
10474 | } | |
10475 | } | |
10476 | ||
645c22ef DM |
10477 | /* remove all the entries from a ptr table */ |
10478 | ||
a0739874 DM |
10479 | void |
10480 | Perl_ptr_table_clear(pTHX_ PTR_TBL_t *tbl) | |
10481 | { | |
10482 | register PTR_TBL_ENT_t **array; | |
10483 | register PTR_TBL_ENT_t *entry; | |
10484 | register PTR_TBL_ENT_t *oentry = Null(PTR_TBL_ENT_t*); | |
10485 | UV riter = 0; | |
10486 | UV max; | |
10487 | ||
10488 | if (!tbl || !tbl->tbl_items) { | |
10489 | return; | |
10490 | } | |
10491 | ||
10492 | array = tbl->tbl_ary; | |
10493 | entry = array[0]; | |
10494 | max = tbl->tbl_max; | |
10495 | ||
10496 | for (;;) { | |
10497 | if (entry) { | |
10498 | oentry = entry; | |
10499 | entry = entry->next; | |
10500 | Safefree(oentry); | |
10501 | } | |
10502 | if (!entry) { | |
10503 | if (++riter > max) { | |
10504 | break; | |
10505 | } | |
10506 | entry = array[riter]; | |
10507 | } | |
10508 | } | |
10509 | ||
10510 | tbl->tbl_items = 0; | |
10511 | } | |
10512 | ||
645c22ef DM |
10513 | /* clear and free a ptr table */ |
10514 | ||
a0739874 DM |
10515 | void |
10516 | Perl_ptr_table_free(pTHX_ PTR_TBL_t *tbl) | |
10517 | { | |
10518 | if (!tbl) { | |
10519 | return; | |
10520 | } | |
10521 | ptr_table_clear(tbl); | |
10522 | Safefree(tbl->tbl_ary); | |
10523 | Safefree(tbl); | |
10524 | } | |
10525 | ||
1d7c1841 GS |
10526 | #ifdef DEBUGGING |
10527 | char *PL_watch_pvx; | |
10528 | #endif | |
10529 | ||
645c22ef DM |
10530 | /* attempt to make everything in the typeglob readonly */ |
10531 | ||
5bd07a3d | 10532 | STATIC SV * |
59b40662 | 10533 | S_gv_share(pTHX_ SV *sstr, CLONE_PARAMS *param) |
5bd07a3d DM |
10534 | { |
10535 | GV *gv = (GV*)sstr; | |
59b40662 | 10536 | SV *sv = ¶m->proto_perl->Isv_no; /* just need SvREADONLY-ness */ |
5bd07a3d DM |
10537 | |
10538 | if (GvIO(gv) || GvFORM(gv)) { | |
7fb37951 | 10539 | GvUNIQUE_off(gv); /* GvIOs cannot be shared. nor can GvFORMs */ |
5bd07a3d DM |
10540 | } |
10541 | else if (!GvCV(gv)) { | |
10542 | GvCV(gv) = (CV*)sv; | |
10543 | } | |
10544 | else { | |
10545 | /* CvPADLISTs cannot be shared */ | |
37e20706 | 10546 | if (!SvREADONLY(GvCV(gv)) && !CvXSUB(GvCV(gv))) { |
7fb37951 | 10547 | GvUNIQUE_off(gv); |
5bd07a3d DM |
10548 | } |
10549 | } | |
10550 | ||
7fb37951 | 10551 | if (!GvUNIQUE(gv)) { |
5bd07a3d DM |
10552 | #if 0 |
10553 | PerlIO_printf(Perl_debug_log, "gv_share: unable to share %s::%s\n", | |
10554 | HvNAME(GvSTASH(gv)), GvNAME(gv)); | |
10555 | #endif | |
10556 | return Nullsv; | |
10557 | } | |
10558 | ||
4411f3b6 | 10559 | /* |
5bd07a3d DM |
10560 | * write attempts will die with |
10561 | * "Modification of a read-only value attempted" | |
10562 | */ | |
10563 | if (!GvSV(gv)) { | |
10564 | GvSV(gv) = sv; | |
10565 | } | |
10566 | else { | |
10567 | SvREADONLY_on(GvSV(gv)); | |
10568 | } | |
10569 | ||
10570 | if (!GvAV(gv)) { | |
10571 | GvAV(gv) = (AV*)sv; | |
10572 | } | |
10573 | else { | |
10574 | SvREADONLY_on(GvAV(gv)); | |
10575 | } | |
10576 | ||
10577 | if (!GvHV(gv)) { | |
10578 | GvHV(gv) = (HV*)sv; | |
10579 | } | |
10580 | else { | |
53c33732 | 10581 | SvREADONLY_on(GvHV(gv)); |
5bd07a3d DM |
10582 | } |
10583 | ||
10584 | return sstr; /* he_dup() will SvREFCNT_inc() */ | |
10585 | } | |
10586 | ||
645c22ef DM |
10587 | /* duplicate an SV of any type (including AV, HV etc) */ |
10588 | ||
83841fad NIS |
10589 | void |
10590 | Perl_rvpv_dup(pTHX_ SV *dstr, SV *sstr, CLONE_PARAMS* param) | |
10591 | { | |
10592 | if (SvROK(sstr)) { | |
d3d0e6f1 | 10593 | SvRV(dstr) = SvWEAKREF(sstr) |
83841fad NIS |
10594 | ? sv_dup(SvRV(sstr), param) |
10595 | : sv_dup_inc(SvRV(sstr), param); | |
10596 | } | |
10597 | else if (SvPVX(sstr)) { | |
10598 | /* Has something there */ | |
10599 | if (SvLEN(sstr)) { | |
68795e93 | 10600 | /* Normal PV - clone whole allocated space */ |
83841fad | 10601 | SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1); |
d3d0e6f1 NC |
10602 | if (SvREADONLY(sstr) && SvFAKE(sstr)) { |
10603 | /* Not that normal - actually sstr is copy on write. | |
10604 | But we are a true, independant SV, so: */ | |
10605 | SvREADONLY_off(dstr); | |
10606 | SvFAKE_off(dstr); | |
10607 | } | |
68795e93 | 10608 | } |
83841fad NIS |
10609 | else { |
10610 | /* Special case - not normally malloced for some reason */ | |
10611 | if (SvREADONLY(sstr) && SvFAKE(sstr)) { | |
10612 | /* A "shared" PV - clone it as unshared string */ | |
281b2760 | 10613 | if(SvPADTMP(sstr)) { |
5e6160dc AB |
10614 | /* However, some of them live in the pad |
10615 | and they should not have these flags | |
10616 | turned off */ | |
281b2760 AB |
10617 | |
10618 | SvPVX(dstr) = sharepvn(SvPVX(sstr), SvCUR(sstr), | |
10619 | SvUVX(sstr)); | |
10620 | SvUVX(dstr) = SvUVX(sstr); | |
10621 | } else { | |
10622 | ||
10623 | SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvCUR(sstr)); | |
10624 | SvFAKE_off(dstr); | |
10625 | SvREADONLY_off(dstr); | |
5e6160dc | 10626 | } |
83841fad NIS |
10627 | } |
10628 | else { | |
10629 | /* Some other special case - random pointer */ | |
10630 | SvPVX(dstr) = SvPVX(sstr); | |
d3d0e6f1 | 10631 | } |
83841fad NIS |
10632 | } |
10633 | } | |
10634 | else { | |
10635 | /* Copy the Null */ | |
10636 | SvPVX(dstr) = SvPVX(sstr); | |
10637 | } | |
10638 | } | |
10639 | ||
1d7c1841 | 10640 | SV * |
a8fc9800 | 10641 | Perl_sv_dup(pTHX_ SV *sstr, CLONE_PARAMS* param) |
1d7c1841 | 10642 | { |
1d7c1841 GS |
10643 | SV *dstr; |
10644 | ||
10645 | if (!sstr || SvTYPE(sstr) == SVTYPEMASK) | |
10646 | return Nullsv; | |
10647 | /* look for it in the table first */ | |
10648 | dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr); | |
10649 | if (dstr) | |
10650 | return dstr; | |
10651 | ||
0405e91e AB |
10652 | if(param->flags & CLONEf_JOIN_IN) { |
10653 | /** We are joining here so we don't want do clone | |
10654 | something that is bad **/ | |
10655 | ||
10656 | if(SvTYPE(sstr) == SVt_PVHV && | |
10657 | HvNAME(sstr)) { | |
10658 | /** don't clone stashes if they already exist **/ | |
10659 | HV* old_stash = gv_stashpv(HvNAME(sstr),0); | |
10660 | return (SV*) old_stash; | |
10661 | } | |
10662 | } | |
10663 | ||
1d7c1841 GS |
10664 | /* create anew and remember what it is */ |
10665 | new_SV(dstr); | |
10666 | ptr_table_store(PL_ptr_table, sstr, dstr); | |
10667 | ||
10668 | /* clone */ | |
10669 | SvFLAGS(dstr) = SvFLAGS(sstr); | |
10670 | SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */ | |
10671 | SvREFCNT(dstr) = 0; /* must be before any other dups! */ | |
10672 | ||
10673 | #ifdef DEBUGGING | |
10674 | if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx) | |
10675 | PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n", | |
10676 | PL_watch_pvx, SvPVX(sstr)); | |
10677 | #endif | |
10678 | ||
10679 | switch (SvTYPE(sstr)) { | |
10680 | case SVt_NULL: | |
10681 | SvANY(dstr) = NULL; | |
10682 | break; | |
10683 | case SVt_IV: | |
10684 | SvANY(dstr) = new_XIV(); | |
10685 | SvIVX(dstr) = SvIVX(sstr); | |
10686 | break; | |
10687 | case SVt_NV: | |
10688 | SvANY(dstr) = new_XNV(); | |
10689 | SvNVX(dstr) = SvNVX(sstr); | |
10690 | break; | |
10691 | case SVt_RV: | |
10692 | SvANY(dstr) = new_XRV(); | |
83841fad | 10693 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10694 | break; |
10695 | case SVt_PV: | |
10696 | SvANY(dstr) = new_XPV(); | |
10697 | SvCUR(dstr) = SvCUR(sstr); | |
10698 | SvLEN(dstr) = SvLEN(sstr); | |
83841fad | 10699 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10700 | break; |
10701 | case SVt_PVIV: | |
10702 | SvANY(dstr) = new_XPVIV(); | |
10703 | SvCUR(dstr) = SvCUR(sstr); | |
10704 | SvLEN(dstr) = SvLEN(sstr); | |
10705 | SvIVX(dstr) = SvIVX(sstr); | |
83841fad | 10706 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10707 | break; |
10708 | case SVt_PVNV: | |
10709 | SvANY(dstr) = new_XPVNV(); | |
10710 | SvCUR(dstr) = SvCUR(sstr); | |
10711 | SvLEN(dstr) = SvLEN(sstr); | |
10712 | SvIVX(dstr) = SvIVX(sstr); | |
10713 | SvNVX(dstr) = SvNVX(sstr); | |
83841fad | 10714 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10715 | break; |
10716 | case SVt_PVMG: | |
10717 | SvANY(dstr) = new_XPVMG(); | |
10718 | SvCUR(dstr) = SvCUR(sstr); | |
10719 | SvLEN(dstr) = SvLEN(sstr); | |
10720 | SvIVX(dstr) = SvIVX(sstr); | |
10721 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10722 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10723 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10724 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10725 | break; |
10726 | case SVt_PVBM: | |
10727 | SvANY(dstr) = new_XPVBM(); | |
10728 | SvCUR(dstr) = SvCUR(sstr); | |
10729 | SvLEN(dstr) = SvLEN(sstr); | |
10730 | SvIVX(dstr) = SvIVX(sstr); | |
10731 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10732 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10733 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10734 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10735 | BmRARE(dstr) = BmRARE(sstr); |
10736 | BmUSEFUL(dstr) = BmUSEFUL(sstr); | |
10737 | BmPREVIOUS(dstr)= BmPREVIOUS(sstr); | |
10738 | break; | |
10739 | case SVt_PVLV: | |
10740 | SvANY(dstr) = new_XPVLV(); | |
10741 | SvCUR(dstr) = SvCUR(sstr); | |
10742 | SvLEN(dstr) = SvLEN(sstr); | |
10743 | SvIVX(dstr) = SvIVX(sstr); | |
10744 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10745 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10746 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10747 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10748 | LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */ |
10749 | LvTARGLEN(dstr) = LvTARGLEN(sstr); | |
dd28f7bb DM |
10750 | if (LvTYPE(sstr) == 't') /* for tie: unrefcnted fake (SV**) */ |
10751 | LvTARG(dstr) = dstr; | |
10752 | else if (LvTYPE(sstr) == 'T') /* for tie: fake HE */ | |
10753 | LvTARG(dstr) = (SV*)he_dup((HE*)LvTARG(sstr), 0, param); | |
10754 | else | |
10755 | LvTARG(dstr) = sv_dup_inc(LvTARG(sstr), param); | |
1d7c1841 GS |
10756 | LvTYPE(dstr) = LvTYPE(sstr); |
10757 | break; | |
10758 | case SVt_PVGV: | |
7fb37951 | 10759 | if (GvUNIQUE((GV*)sstr)) { |
5bd07a3d | 10760 | SV *share; |
59b40662 | 10761 | if ((share = gv_share(sstr, param))) { |
5bd07a3d DM |
10762 | del_SV(dstr); |
10763 | dstr = share; | |
37e20706 | 10764 | ptr_table_store(PL_ptr_table, sstr, dstr); |
5bd07a3d DM |
10765 | #if 0 |
10766 | PerlIO_printf(Perl_debug_log, "sv_dup: sharing %s::%s\n", | |
10767 | HvNAME(GvSTASH(share)), GvNAME(share)); | |
10768 | #endif | |
10769 | break; | |
10770 | } | |
10771 | } | |
1d7c1841 GS |
10772 | SvANY(dstr) = new_XPVGV(); |
10773 | SvCUR(dstr) = SvCUR(sstr); | |
10774 | SvLEN(dstr) = SvLEN(sstr); | |
10775 | SvIVX(dstr) = SvIVX(sstr); | |
10776 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10777 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10778 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10779 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10780 | GvNAMELEN(dstr) = GvNAMELEN(sstr); |
10781 | GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr)); | |
d2d73c3e | 10782 | GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr), param); |
1d7c1841 | 10783 | GvFLAGS(dstr) = GvFLAGS(sstr); |
d2d73c3e | 10784 | GvGP(dstr) = gp_dup(GvGP(sstr), param); |
1d7c1841 GS |
10785 | (void)GpREFCNT_inc(GvGP(dstr)); |
10786 | break; | |
10787 | case SVt_PVIO: | |
10788 | SvANY(dstr) = new_XPVIO(); | |
10789 | SvCUR(dstr) = SvCUR(sstr); | |
10790 | SvLEN(dstr) = SvLEN(sstr); | |
10791 | SvIVX(dstr) = SvIVX(sstr); | |
10792 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10793 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10794 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10795 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
a8fc9800 | 10796 | IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr), param); |
1d7c1841 GS |
10797 | if (IoOFP(sstr) == IoIFP(sstr)) |
10798 | IoOFP(dstr) = IoIFP(dstr); | |
10799 | else | |
a8fc9800 | 10800 | IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr), param); |
1d7c1841 GS |
10801 | /* PL_rsfp_filters entries have fake IoDIRP() */ |
10802 | if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP)) | |
10803 | IoDIRP(dstr) = dirp_dup(IoDIRP(sstr)); | |
10804 | else | |
10805 | IoDIRP(dstr) = IoDIRP(sstr); | |
10806 | IoLINES(dstr) = IoLINES(sstr); | |
10807 | IoPAGE(dstr) = IoPAGE(sstr); | |
10808 | IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr); | |
10809 | IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr); | |
7a5fa8a2 | 10810 | if(IoFLAGS(sstr) & IOf_FAKE_DIRP) { |
5a37521b AB |
10811 | /* I have no idea why fake dirp (rsfps) |
10812 | should be treaded differently but otherwise | |
10813 | we end up with leaks -- sky*/ | |
10814 | IoTOP_GV(dstr) = gv_dup_inc(IoTOP_GV(sstr), param); | |
10815 | IoFMT_GV(dstr) = gv_dup_inc(IoFMT_GV(sstr), param); | |
10816 | IoBOTTOM_GV(dstr) = gv_dup_inc(IoBOTTOM_GV(sstr), param); | |
10817 | } else { | |
10818 | IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr), param); | |
10819 | IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr), param); | |
10820 | IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr), param); | |
10821 | } | |
1d7c1841 | 10822 | IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr)); |
1d7c1841 | 10823 | IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr)); |
1d7c1841 | 10824 | IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr)); |
1d7c1841 GS |
10825 | IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr); |
10826 | IoTYPE(dstr) = IoTYPE(sstr); | |
10827 | IoFLAGS(dstr) = IoFLAGS(sstr); | |
10828 | break; | |
10829 | case SVt_PVAV: | |
10830 | SvANY(dstr) = new_XPVAV(); | |
10831 | SvCUR(dstr) = SvCUR(sstr); | |
10832 | SvLEN(dstr) = SvLEN(sstr); | |
10833 | SvIVX(dstr) = SvIVX(sstr); | |
10834 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10835 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10836 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
10837 | AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr), param); | |
1d7c1841 GS |
10838 | AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr); |
10839 | if (AvARRAY((AV*)sstr)) { | |
10840 | SV **dst_ary, **src_ary; | |
10841 | SSize_t items = AvFILLp((AV*)sstr) + 1; | |
10842 | ||
10843 | src_ary = AvARRAY((AV*)sstr); | |
10844 | Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*); | |
10845 | ptr_table_store(PL_ptr_table, src_ary, dst_ary); | |
10846 | SvPVX(dstr) = (char*)dst_ary; | |
10847 | AvALLOC((AV*)dstr) = dst_ary; | |
10848 | if (AvREAL((AV*)sstr)) { | |
10849 | while (items-- > 0) | |
d2d73c3e | 10850 | *dst_ary++ = sv_dup_inc(*src_ary++, param); |
1d7c1841 GS |
10851 | } |
10852 | else { | |
10853 | while (items-- > 0) | |
d2d73c3e | 10854 | *dst_ary++ = sv_dup(*src_ary++, param); |
1d7c1841 GS |
10855 | } |
10856 | items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr); | |
10857 | while (items-- > 0) { | |
10858 | *dst_ary++ = &PL_sv_undef; | |
10859 | } | |
10860 | } | |
10861 | else { | |
10862 | SvPVX(dstr) = Nullch; | |
10863 | AvALLOC((AV*)dstr) = (SV**)NULL; | |
10864 | } | |
10865 | break; | |
10866 | case SVt_PVHV: | |
10867 | SvANY(dstr) = new_XPVHV(); | |
10868 | SvCUR(dstr) = SvCUR(sstr); | |
10869 | SvLEN(dstr) = SvLEN(sstr); | |
10870 | SvIVX(dstr) = SvIVX(sstr); | |
10871 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10872 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10873 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
1d7c1841 GS |
10874 | HvRITER((HV*)dstr) = HvRITER((HV*)sstr); |
10875 | if (HvARRAY((HV*)sstr)) { | |
1d7c1841 GS |
10876 | STRLEN i = 0; |
10877 | XPVHV *dxhv = (XPVHV*)SvANY(dstr); | |
10878 | XPVHV *sxhv = (XPVHV*)SvANY(sstr); | |
10879 | Newz(0, dxhv->xhv_array, | |
10880 | PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char); | |
10881 | while (i <= sxhv->xhv_max) { | |
10882 | ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i], | |
eb160463 GS |
10883 | (bool)!!HvSHAREKEYS(sstr), |
10884 | param); | |
1d7c1841 GS |
10885 | ++i; |
10886 | } | |
eb160463 GS |
10887 | dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, |
10888 | (bool)!!HvSHAREKEYS(sstr), param); | |
1d7c1841 GS |
10889 | } |
10890 | else { | |
10891 | SvPVX(dstr) = Nullch; | |
10892 | HvEITER((HV*)dstr) = (HE*)NULL; | |
10893 | } | |
10894 | HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */ | |
10895 | HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr)); | |
c43294b8 | 10896 | /* Record stashes for possible cloning in Perl_clone(). */ |
6676db26 | 10897 | if(HvNAME((HV*)dstr)) |
d2d73c3e | 10898 | av_push(param->stashes, dstr); |
1d7c1841 GS |
10899 | break; |
10900 | case SVt_PVFM: | |
10901 | SvANY(dstr) = new_XPVFM(); | |
10902 | FmLINES(dstr) = FmLINES(sstr); | |
10903 | goto dup_pvcv; | |
10904 | /* NOTREACHED */ | |
10905 | case SVt_PVCV: | |
10906 | SvANY(dstr) = new_XPVCV(); | |
d2d73c3e | 10907 | dup_pvcv: |
1d7c1841 GS |
10908 | SvCUR(dstr) = SvCUR(sstr); |
10909 | SvLEN(dstr) = SvLEN(sstr); | |
10910 | SvIVX(dstr) = SvIVX(sstr); | |
10911 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10912 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10913 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10914 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
d2d73c3e | 10915 | CvSTASH(dstr) = hv_dup(CvSTASH(sstr), param); /* NOTE: not refcounted */ |
1d7c1841 GS |
10916 | CvSTART(dstr) = CvSTART(sstr); |
10917 | CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr)); | |
10918 | CvXSUB(dstr) = CvXSUB(sstr); | |
10919 | CvXSUBANY(dstr) = CvXSUBANY(sstr); | |
01485f8b DM |
10920 | if (CvCONST(sstr)) { |
10921 | CvXSUBANY(dstr).any_ptr = GvUNIQUE(CvGV(sstr)) ? | |
10922 | SvREFCNT_inc(CvXSUBANY(sstr).any_ptr) : | |
10923 | sv_dup_inc(CvXSUBANY(sstr).any_ptr, param); | |
10924 | } | |
b23f1a86 DM |
10925 | /* don't dup if copying back - CvGV isn't refcounted, so the |
10926 | * duped GV may never be freed. A bit of a hack! DAPM */ | |
10927 | CvGV(dstr) = (param->flags & CLONEf_JOIN_IN) ? | |
10928 | Nullgv : gv_dup(CvGV(sstr), param) ; | |
d2d73c3e AB |
10929 | if (param->flags & CLONEf_COPY_STACKS) { |
10930 | CvDEPTH(dstr) = CvDEPTH(sstr); | |
10931 | } else { | |
10932 | CvDEPTH(dstr) = 0; | |
10933 | } | |
dd2155a4 | 10934 | PAD_DUP(CvPADLIST(dstr), CvPADLIST(sstr), param); |
7dafbf52 DM |
10935 | CvOUTSIDE_SEQ(dstr) = CvOUTSIDE_SEQ(sstr); |
10936 | CvOUTSIDE(dstr) = | |
10937 | CvWEAKOUTSIDE(sstr) | |
10938 | ? cv_dup( CvOUTSIDE(sstr), param) | |
10939 | : cv_dup_inc(CvOUTSIDE(sstr), param); | |
1d7c1841 | 10940 | CvFLAGS(dstr) = CvFLAGS(sstr); |
54356c7d | 10941 | CvFILE(dstr) = CvXSUB(sstr) ? CvFILE(sstr) : SAVEPV(CvFILE(sstr)); |
1d7c1841 GS |
10942 | break; |
10943 | default: | |
c803eecc | 10944 | Perl_croak(aTHX_ "Bizarre SvTYPE [%" IVdf "]", (IV)SvTYPE(sstr)); |
1d7c1841 GS |
10945 | break; |
10946 | } | |
10947 | ||
10948 | if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO) | |
10949 | ++PL_sv_objcount; | |
10950 | ||
10951 | return dstr; | |
d2d73c3e | 10952 | } |
1d7c1841 | 10953 | |
645c22ef DM |
10954 | /* duplicate a context */ |
10955 | ||
1d7c1841 | 10956 | PERL_CONTEXT * |
a8fc9800 | 10957 | Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max, CLONE_PARAMS* param) |
1d7c1841 GS |
10958 | { |
10959 | PERL_CONTEXT *ncxs; | |
10960 | ||
10961 | if (!cxs) | |
10962 | return (PERL_CONTEXT*)NULL; | |
10963 | ||
10964 | /* look for it in the table first */ | |
10965 | ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs); | |
10966 | if (ncxs) | |
10967 | return ncxs; | |
10968 | ||
10969 | /* create anew and remember what it is */ | |
10970 | Newz(56, ncxs, max + 1, PERL_CONTEXT); | |
10971 | ptr_table_store(PL_ptr_table, cxs, ncxs); | |
10972 | ||
10973 | while (ix >= 0) { | |
10974 | PERL_CONTEXT *cx = &cxs[ix]; | |
10975 | PERL_CONTEXT *ncx = &ncxs[ix]; | |
10976 | ncx->cx_type = cx->cx_type; | |
10977 | if (CxTYPE(cx) == CXt_SUBST) { | |
10978 | Perl_croak(aTHX_ "Cloning substitution context is unimplemented"); | |
10979 | } | |
10980 | else { | |
10981 | ncx->blk_oldsp = cx->blk_oldsp; | |
10982 | ncx->blk_oldcop = cx->blk_oldcop; | |
1d7c1841 GS |
10983 | ncx->blk_oldmarksp = cx->blk_oldmarksp; |
10984 | ncx->blk_oldscopesp = cx->blk_oldscopesp; | |
10985 | ncx->blk_oldpm = cx->blk_oldpm; | |
10986 | ncx->blk_gimme = cx->blk_gimme; | |
10987 | switch (CxTYPE(cx)) { | |
10988 | case CXt_SUB: | |
10989 | ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0 | |
d2d73c3e AB |
10990 | ? cv_dup_inc(cx->blk_sub.cv, param) |
10991 | : cv_dup(cx->blk_sub.cv,param)); | |
1d7c1841 | 10992 | ncx->blk_sub.argarray = (cx->blk_sub.hasargs |
d2d73c3e | 10993 | ? av_dup_inc(cx->blk_sub.argarray, param) |
1d7c1841 | 10994 | : Nullav); |
d2d73c3e | 10995 | ncx->blk_sub.savearray = av_dup_inc(cx->blk_sub.savearray, param); |
1d7c1841 GS |
10996 | ncx->blk_sub.olddepth = cx->blk_sub.olddepth; |
10997 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; | |
10998 | ncx->blk_sub.lval = cx->blk_sub.lval; | |
f39bc417 | 10999 | ncx->blk_sub.retop = cx->blk_sub.retop; |
1d7c1841 GS |
11000 | break; |
11001 | case CXt_EVAL: | |
11002 | ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval; | |
11003 | ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type; | |
b47cad08 | 11004 | ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv, param); |
1d7c1841 | 11005 | ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root; |
d2d73c3e | 11006 | ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text, param); |
f39bc417 | 11007 | ncx->blk_eval.retop = cx->blk_eval.retop; |
1d7c1841 GS |
11008 | break; |
11009 | case CXt_LOOP: | |
11010 | ncx->blk_loop.label = cx->blk_loop.label; | |
11011 | ncx->blk_loop.resetsp = cx->blk_loop.resetsp; | |
11012 | ncx->blk_loop.redo_op = cx->blk_loop.redo_op; | |
11013 | ncx->blk_loop.next_op = cx->blk_loop.next_op; | |
11014 | ncx->blk_loop.last_op = cx->blk_loop.last_op; | |
11015 | ncx->blk_loop.iterdata = (CxPADLOOP(cx) | |
11016 | ? cx->blk_loop.iterdata | |
d2d73c3e | 11017 | : gv_dup((GV*)cx->blk_loop.iterdata, param)); |
f3548bdc DM |
11018 | ncx->blk_loop.oldcomppad |
11019 | = (PAD*)ptr_table_fetch(PL_ptr_table, | |
11020 | cx->blk_loop.oldcomppad); | |
d2d73c3e AB |
11021 | ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave, param); |
11022 | ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval, param); | |
11023 | ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary, param); | |
1d7c1841 GS |
11024 | ncx->blk_loop.iterix = cx->blk_loop.iterix; |
11025 | ncx->blk_loop.itermax = cx->blk_loop.itermax; | |
11026 | break; | |
11027 | case CXt_FORMAT: | |
d2d73c3e AB |
11028 | ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv, param); |
11029 | ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv, param); | |
11030 | ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv, param); | |
1d7c1841 | 11031 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; |
f39bc417 | 11032 | ncx->blk_sub.retop = cx->blk_sub.retop; |
1d7c1841 GS |
11033 | break; |
11034 | case CXt_BLOCK: | |
11035 | case CXt_NULL: | |
11036 | break; | |
11037 | } | |
11038 | } | |
11039 | --ix; | |
11040 | } | |
11041 | return ncxs; | |
11042 | } | |
11043 | ||
645c22ef DM |
11044 | /* duplicate a stack info structure */ |
11045 | ||
1d7c1841 | 11046 | PERL_SI * |
a8fc9800 | 11047 | Perl_si_dup(pTHX_ PERL_SI *si, CLONE_PARAMS* param) |
1d7c1841 GS |
11048 | { |
11049 | PERL_SI *nsi; | |
11050 | ||
11051 | if (!si) | |
11052 | return (PERL_SI*)NULL; | |
11053 | ||
11054 | /* look for it in the table first */ | |
11055 | nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si); | |
11056 | if (nsi) | |
11057 | return nsi; | |
11058 | ||
11059 | /* create anew and remember what it is */ | |
11060 | Newz(56, nsi, 1, PERL_SI); | |
11061 | ptr_table_store(PL_ptr_table, si, nsi); | |
11062 | ||
d2d73c3e | 11063 | nsi->si_stack = av_dup_inc(si->si_stack, param); |
1d7c1841 GS |
11064 | nsi->si_cxix = si->si_cxix; |
11065 | nsi->si_cxmax = si->si_cxmax; | |
d2d73c3e | 11066 | nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax, param); |
1d7c1841 | 11067 | nsi->si_type = si->si_type; |
d2d73c3e AB |
11068 | nsi->si_prev = si_dup(si->si_prev, param); |
11069 | nsi->si_next = si_dup(si->si_next, param); | |
1d7c1841 GS |
11070 | nsi->si_markoff = si->si_markoff; |
11071 | ||
11072 | return nsi; | |
11073 | } | |
11074 | ||
11075 | #define POPINT(ss,ix) ((ss)[--(ix)].any_i32) | |
11076 | #define TOPINT(ss,ix) ((ss)[ix].any_i32) | |
11077 | #define POPLONG(ss,ix) ((ss)[--(ix)].any_long) | |
11078 | #define TOPLONG(ss,ix) ((ss)[ix].any_long) | |
11079 | #define POPIV(ss,ix) ((ss)[--(ix)].any_iv) | |
11080 | #define TOPIV(ss,ix) ((ss)[ix].any_iv) | |
38d8b13e HS |
11081 | #define POPBOOL(ss,ix) ((ss)[--(ix)].any_bool) |
11082 | #define TOPBOOL(ss,ix) ((ss)[ix].any_bool) | |
1d7c1841 GS |
11083 | #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr) |
11084 | #define TOPPTR(ss,ix) ((ss)[ix].any_ptr) | |
11085 | #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr) | |
11086 | #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr) | |
11087 | #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr) | |
11088 | #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr) | |
11089 | ||
11090 | /* XXXXX todo */ | |
11091 | #define pv_dup_inc(p) SAVEPV(p) | |
11092 | #define pv_dup(p) SAVEPV(p) | |
11093 | #define svp_dup_inc(p,pp) any_dup(p,pp) | |
11094 | ||
645c22ef DM |
11095 | /* map any object to the new equivent - either something in the |
11096 | * ptr table, or something in the interpreter structure | |
11097 | */ | |
11098 | ||
1d7c1841 GS |
11099 | void * |
11100 | Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl) | |
11101 | { | |
11102 | void *ret; | |
11103 | ||
11104 | if (!v) | |
11105 | return (void*)NULL; | |
11106 | ||
11107 | /* look for it in the table first */ | |
11108 | ret = ptr_table_fetch(PL_ptr_table, v); | |
11109 | if (ret) | |
11110 | return ret; | |
11111 | ||
11112 | /* see if it is part of the interpreter structure */ | |
11113 | if (v >= (void*)proto_perl && v < (void*)(proto_perl+1)) | |
acfe0abc | 11114 | ret = (void*)(((char*)aTHX) + (((char*)v) - (char*)proto_perl)); |
05ec9bb3 | 11115 | else { |
1d7c1841 | 11116 | ret = v; |
05ec9bb3 | 11117 | } |
1d7c1841 GS |
11118 | |
11119 | return ret; | |
11120 | } | |
11121 | ||
645c22ef DM |
11122 | /* duplicate the save stack */ |
11123 | ||
1d7c1841 | 11124 | ANY * |
a8fc9800 | 11125 | Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl, CLONE_PARAMS* param) |
1d7c1841 GS |
11126 | { |
11127 | ANY *ss = proto_perl->Tsavestack; | |
11128 | I32 ix = proto_perl->Tsavestack_ix; | |
11129 | I32 max = proto_perl->Tsavestack_max; | |
11130 | ANY *nss; | |
11131 | SV *sv; | |
11132 | GV *gv; | |
11133 | AV *av; | |
11134 | HV *hv; | |
11135 | void* ptr; | |
11136 | int intval; | |
11137 | long longval; | |
11138 | GP *gp; | |
11139 | IV iv; | |
11140 | I32 i; | |
c4e33207 | 11141 | char *c = NULL; |
1d7c1841 | 11142 | void (*dptr) (void*); |
acfe0abc | 11143 | void (*dxptr) (pTHX_ void*); |
e977893f | 11144 | OP *o; |
1d7c1841 GS |
11145 | |
11146 | Newz(54, nss, max, ANY); | |
11147 | ||
11148 | while (ix > 0) { | |
11149 | i = POPINT(ss,ix); | |
11150 | TOPINT(nss,ix) = i; | |
11151 | switch (i) { | |
11152 | case SAVEt_ITEM: /* normal string */ | |
11153 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11154 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11155 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 11156 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11157 | break; |
11158 | case SAVEt_SV: /* scalar reference */ | |
11159 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11160 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11161 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 11162 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 | 11163 | break; |
f4dd75d9 GS |
11164 | case SAVEt_GENERIC_PVREF: /* generic char* */ |
11165 | c = (char*)POPPTR(ss,ix); | |
11166 | TOPPTR(nss,ix) = pv_dup(c); | |
11167 | ptr = POPPTR(ss,ix); | |
11168 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11169 | break; | |
05ec9bb3 NIS |
11170 | case SAVEt_SHARED_PVREF: /* char* in shared space */ |
11171 | c = (char*)POPPTR(ss,ix); | |
11172 | TOPPTR(nss,ix) = savesharedpv(c); | |
11173 | ptr = POPPTR(ss,ix); | |
11174 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11175 | break; | |
1d7c1841 GS |
11176 | case SAVEt_GENERIC_SVREF: /* generic sv */ |
11177 | case SAVEt_SVREF: /* scalar reference */ | |
11178 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11179 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11180 | ptr = POPPTR(ss,ix); |
11181 | TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */ | |
11182 | break; | |
11183 | case SAVEt_AV: /* array reference */ | |
11184 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 11185 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 | 11186 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 11187 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
11188 | break; |
11189 | case SAVEt_HV: /* hash reference */ | |
11190 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 11191 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 | 11192 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 11193 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
11194 | break; |
11195 | case SAVEt_INT: /* int reference */ | |
11196 | ptr = POPPTR(ss,ix); | |
11197 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11198 | intval = (int)POPINT(ss,ix); | |
11199 | TOPINT(nss,ix) = intval; | |
11200 | break; | |
11201 | case SAVEt_LONG: /* long reference */ | |
11202 | ptr = POPPTR(ss,ix); | |
11203 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11204 | longval = (long)POPLONG(ss,ix); | |
11205 | TOPLONG(nss,ix) = longval; | |
11206 | break; | |
11207 | case SAVEt_I32: /* I32 reference */ | |
11208 | case SAVEt_I16: /* I16 reference */ | |
11209 | case SAVEt_I8: /* I8 reference */ | |
11210 | ptr = POPPTR(ss,ix); | |
11211 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11212 | i = POPINT(ss,ix); | |
11213 | TOPINT(nss,ix) = i; | |
11214 | break; | |
11215 | case SAVEt_IV: /* IV reference */ | |
11216 | ptr = POPPTR(ss,ix); | |
11217 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11218 | iv = POPIV(ss,ix); | |
11219 | TOPIV(nss,ix) = iv; | |
11220 | break; | |
11221 | case SAVEt_SPTR: /* SV* reference */ | |
11222 | ptr = POPPTR(ss,ix); | |
11223 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11224 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11225 | TOPPTR(nss,ix) = sv_dup(sv, param); |
1d7c1841 GS |
11226 | break; |
11227 | case SAVEt_VPTR: /* random* reference */ | |
11228 | ptr = POPPTR(ss,ix); | |
11229 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11230 | ptr = POPPTR(ss,ix); | |
11231 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11232 | break; | |
11233 | case SAVEt_PPTR: /* char* reference */ | |
11234 | ptr = POPPTR(ss,ix); | |
11235 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11236 | c = (char*)POPPTR(ss,ix); | |
11237 | TOPPTR(nss,ix) = pv_dup(c); | |
11238 | break; | |
11239 | case SAVEt_HPTR: /* HV* reference */ | |
11240 | ptr = POPPTR(ss,ix); | |
11241 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11242 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 11243 | TOPPTR(nss,ix) = hv_dup(hv, param); |
1d7c1841 GS |
11244 | break; |
11245 | case SAVEt_APTR: /* AV* reference */ | |
11246 | ptr = POPPTR(ss,ix); | |
11247 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11248 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 11249 | TOPPTR(nss,ix) = av_dup(av, param); |
1d7c1841 GS |
11250 | break; |
11251 | case SAVEt_NSTAB: | |
11252 | gv = (GV*)POPPTR(ss,ix); | |
d2d73c3e | 11253 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
11254 | break; |
11255 | case SAVEt_GP: /* scalar reference */ | |
11256 | gp = (GP*)POPPTR(ss,ix); | |
d2d73c3e | 11257 | TOPPTR(nss,ix) = gp = gp_dup(gp, param); |
1d7c1841 GS |
11258 | (void)GpREFCNT_inc(gp); |
11259 | gv = (GV*)POPPTR(ss,ix); | |
2ed3c8fc | 11260 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 GS |
11261 | c = (char*)POPPTR(ss,ix); |
11262 | TOPPTR(nss,ix) = pv_dup(c); | |
11263 | iv = POPIV(ss,ix); | |
11264 | TOPIV(nss,ix) = iv; | |
11265 | iv = POPIV(ss,ix); | |
11266 | TOPIV(nss,ix) = iv; | |
11267 | break; | |
11268 | case SAVEt_FREESV: | |
26d9b02f | 11269 | case SAVEt_MORTALIZESV: |
1d7c1841 | 11270 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 11271 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11272 | break; |
11273 | case SAVEt_FREEOP: | |
11274 | ptr = POPPTR(ss,ix); | |
11275 | if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) { | |
11276 | /* these are assumed to be refcounted properly */ | |
11277 | switch (((OP*)ptr)->op_type) { | |
11278 | case OP_LEAVESUB: | |
11279 | case OP_LEAVESUBLV: | |
11280 | case OP_LEAVEEVAL: | |
11281 | case OP_LEAVE: | |
11282 | case OP_SCOPE: | |
11283 | case OP_LEAVEWRITE: | |
e977893f GS |
11284 | TOPPTR(nss,ix) = ptr; |
11285 | o = (OP*)ptr; | |
11286 | OpREFCNT_inc(o); | |
1d7c1841 GS |
11287 | break; |
11288 | default: | |
11289 | TOPPTR(nss,ix) = Nullop; | |
11290 | break; | |
11291 | } | |
11292 | } | |
11293 | else | |
11294 | TOPPTR(nss,ix) = Nullop; | |
11295 | break; | |
11296 | case SAVEt_FREEPV: | |
11297 | c = (char*)POPPTR(ss,ix); | |
11298 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
11299 | break; | |
11300 | case SAVEt_CLEARSV: | |
11301 | longval = POPLONG(ss,ix); | |
11302 | TOPLONG(nss,ix) = longval; | |
11303 | break; | |
11304 | case SAVEt_DELETE: | |
11305 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 11306 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
11307 | c = (char*)POPPTR(ss,ix); |
11308 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
11309 | i = POPINT(ss,ix); | |
11310 | TOPINT(nss,ix) = i; | |
11311 | break; | |
11312 | case SAVEt_DESTRUCTOR: | |
11313 | ptr = POPPTR(ss,ix); | |
11314 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
11315 | dptr = POPDPTR(ss,ix); | |
ef75a179 | 11316 | TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl); |
1d7c1841 GS |
11317 | break; |
11318 | case SAVEt_DESTRUCTOR_X: | |
11319 | ptr = POPPTR(ss,ix); | |
11320 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
11321 | dxptr = POPDXPTR(ss,ix); | |
acfe0abc | 11322 | TOPDXPTR(nss,ix) = (void (*)(pTHX_ void*))any_dup((void *)dxptr, proto_perl); |
1d7c1841 GS |
11323 | break; |
11324 | case SAVEt_REGCONTEXT: | |
11325 | case SAVEt_ALLOC: | |
11326 | i = POPINT(ss,ix); | |
11327 | TOPINT(nss,ix) = i; | |
11328 | ix -= i; | |
11329 | break; | |
11330 | case SAVEt_STACK_POS: /* Position on Perl stack */ | |
11331 | i = POPINT(ss,ix); | |
11332 | TOPINT(nss,ix) = i; | |
11333 | break; | |
11334 | case SAVEt_AELEM: /* array element */ | |
11335 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11336 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11337 | i = POPINT(ss,ix); |
11338 | TOPINT(nss,ix) = i; | |
11339 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 11340 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 GS |
11341 | break; |
11342 | case SAVEt_HELEM: /* hash element */ | |
11343 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11344 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11345 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 11346 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11347 | hv = (HV*)POPPTR(ss,ix); |
d2d73c3e | 11348 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
11349 | break; |
11350 | case SAVEt_OP: | |
11351 | ptr = POPPTR(ss,ix); | |
11352 | TOPPTR(nss,ix) = ptr; | |
11353 | break; | |
11354 | case SAVEt_HINTS: | |
11355 | i = POPINT(ss,ix); | |
11356 | TOPINT(nss,ix) = i; | |
11357 | break; | |
c4410b1b GS |
11358 | case SAVEt_COMPPAD: |
11359 | av = (AV*)POPPTR(ss,ix); | |
58ed4fbe | 11360 | TOPPTR(nss,ix) = av_dup(av, param); |
c4410b1b | 11361 | break; |
c3564e5c GS |
11362 | case SAVEt_PADSV: |
11363 | longval = (long)POPLONG(ss,ix); | |
11364 | TOPLONG(nss,ix) = longval; | |
11365 | ptr = POPPTR(ss,ix); | |
11366 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11367 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11368 | TOPPTR(nss,ix) = sv_dup(sv, param); |
c3564e5c | 11369 | break; |
a1bb4754 | 11370 | case SAVEt_BOOL: |
38d8b13e | 11371 | ptr = POPPTR(ss,ix); |
b9609c01 | 11372 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); |
38d8b13e | 11373 | longval = (long)POPBOOL(ss,ix); |
b9609c01 | 11374 | TOPBOOL(nss,ix) = (bool)longval; |
a1bb4754 | 11375 | break; |
8bd2680e MHM |
11376 | case SAVEt_SET_SVFLAGS: |
11377 | i = POPINT(ss,ix); | |
11378 | TOPINT(nss,ix) = i; | |
11379 | i = POPINT(ss,ix); | |
11380 | TOPINT(nss,ix) = i; | |
11381 | sv = (SV*)POPPTR(ss,ix); | |
11382 | TOPPTR(nss,ix) = sv_dup(sv, param); | |
11383 | break; | |
1d7c1841 GS |
11384 | default: |
11385 | Perl_croak(aTHX_ "panic: ss_dup inconsistency"); | |
11386 | } | |
11387 | } | |
11388 | ||
11389 | return nss; | |
11390 | } | |
11391 | ||
645c22ef DM |
11392 | /* |
11393 | =for apidoc perl_clone | |
11394 | ||
11395 | Create and return a new interpreter by cloning the current one. | |
11396 | ||
4be49ee6 | 11397 | perl_clone takes these flags as parameters: |
6a78b4db | 11398 | |
7a5fa8a2 NIS |
11399 | CLONEf_COPY_STACKS - is used to, well, copy the stacks also, |
11400 | without it we only clone the data and zero the stacks, | |
11401 | with it we copy the stacks and the new perl interpreter is | |
11402 | ready to run at the exact same point as the previous one. | |
11403 | The pseudo-fork code uses COPY_STACKS while the | |
6a78b4db AB |
11404 | threads->new doesn't. |
11405 | ||
11406 | CLONEf_KEEP_PTR_TABLE | |
7a5fa8a2 NIS |
11407 | perl_clone keeps a ptr_table with the pointer of the old |
11408 | variable as a key and the new variable as a value, | |
11409 | this allows it to check if something has been cloned and not | |
11410 | clone it again but rather just use the value and increase the | |
11411 | refcount. If KEEP_PTR_TABLE is not set then perl_clone will kill | |
11412 | the ptr_table using the function | |
11413 | C<ptr_table_free(PL_ptr_table); PL_ptr_table = NULL;>, | |
11414 | reason to keep it around is if you want to dup some of your own | |
11415 | variable who are outside the graph perl scans, example of this | |
6a78b4db AB |
11416 | code is in threads.xs create |
11417 | ||
11418 | CLONEf_CLONE_HOST | |
7a5fa8a2 NIS |
11419 | This is a win32 thing, it is ignored on unix, it tells perls |
11420 | win32host code (which is c++) to clone itself, this is needed on | |
11421 | win32 if you want to run two threads at the same time, | |
11422 | if you just want to do some stuff in a separate perl interpreter | |
11423 | and then throw it away and return to the original one, | |
6a78b4db AB |
11424 | you don't need to do anything. |
11425 | ||
645c22ef DM |
11426 | =cut |
11427 | */ | |
11428 | ||
11429 | /* XXX the above needs expanding by someone who actually understands it ! */ | |
3fc56081 NK |
11430 | EXTERN_C PerlInterpreter * |
11431 | perl_clone_host(PerlInterpreter* proto_perl, UV flags); | |
645c22ef | 11432 | |
1d7c1841 GS |
11433 | PerlInterpreter * |
11434 | perl_clone(PerlInterpreter *proto_perl, UV flags) | |
11435 | { | |
1d7c1841 | 11436 | #ifdef PERL_IMPLICIT_SYS |
c43294b8 AB |
11437 | |
11438 | /* perlhost.h so we need to call into it | |
11439 | to clone the host, CPerlHost should have a c interface, sky */ | |
11440 | ||
11441 | if (flags & CLONEf_CLONE_HOST) { | |
11442 | return perl_clone_host(proto_perl,flags); | |
11443 | } | |
11444 | return perl_clone_using(proto_perl, flags, | |
1d7c1841 GS |
11445 | proto_perl->IMem, |
11446 | proto_perl->IMemShared, | |
11447 | proto_perl->IMemParse, | |
11448 | proto_perl->IEnv, | |
11449 | proto_perl->IStdIO, | |
11450 | proto_perl->ILIO, | |
11451 | proto_perl->IDir, | |
11452 | proto_perl->ISock, | |
11453 | proto_perl->IProc); | |
11454 | } | |
11455 | ||
11456 | PerlInterpreter * | |
11457 | perl_clone_using(PerlInterpreter *proto_perl, UV flags, | |
11458 | struct IPerlMem* ipM, struct IPerlMem* ipMS, | |
11459 | struct IPerlMem* ipMP, struct IPerlEnv* ipE, | |
11460 | struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO, | |
11461 | struct IPerlDir* ipD, struct IPerlSock* ipS, | |
11462 | struct IPerlProc* ipP) | |
11463 | { | |
11464 | /* XXX many of the string copies here can be optimized if they're | |
11465 | * constants; they need to be allocated as common memory and just | |
11466 | * their pointers copied. */ | |
11467 | ||
11468 | IV i; | |
64aa0685 GS |
11469 | CLONE_PARAMS clone_params; |
11470 | CLONE_PARAMS* param = &clone_params; | |
d2d73c3e | 11471 | |
1d7c1841 | 11472 | PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter)); |
ba869deb | 11473 | PERL_SET_THX(my_perl); |
1d7c1841 | 11474 | |
acfe0abc | 11475 | # ifdef DEBUGGING |
a4530404 | 11476 | Poison(my_perl, 1, PerlInterpreter); |
1d7c1841 GS |
11477 | PL_markstack = 0; |
11478 | PL_scopestack = 0; | |
11479 | PL_savestack = 0; | |
22f7c9c9 JH |
11480 | PL_savestack_ix = 0; |
11481 | PL_savestack_max = -1; | |
66fe0623 | 11482 | PL_sig_pending = 0; |
25596c82 | 11483 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); |
acfe0abc | 11484 | # else /* !DEBUGGING */ |
1d7c1841 | 11485 | Zero(my_perl, 1, PerlInterpreter); |
acfe0abc | 11486 | # endif /* DEBUGGING */ |
1d7c1841 GS |
11487 | |
11488 | /* host pointers */ | |
11489 | PL_Mem = ipM; | |
11490 | PL_MemShared = ipMS; | |
11491 | PL_MemParse = ipMP; | |
11492 | PL_Env = ipE; | |
11493 | PL_StdIO = ipStd; | |
11494 | PL_LIO = ipLIO; | |
11495 | PL_Dir = ipD; | |
11496 | PL_Sock = ipS; | |
11497 | PL_Proc = ipP; | |
1d7c1841 GS |
11498 | #else /* !PERL_IMPLICIT_SYS */ |
11499 | IV i; | |
64aa0685 GS |
11500 | CLONE_PARAMS clone_params; |
11501 | CLONE_PARAMS* param = &clone_params; | |
1d7c1841 | 11502 | PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter)); |
ba869deb | 11503 | PERL_SET_THX(my_perl); |
1d7c1841 | 11504 | |
d2d73c3e AB |
11505 | |
11506 | ||
1d7c1841 | 11507 | # ifdef DEBUGGING |
a4530404 | 11508 | Poison(my_perl, 1, PerlInterpreter); |
1d7c1841 GS |
11509 | PL_markstack = 0; |
11510 | PL_scopestack = 0; | |
11511 | PL_savestack = 0; | |
22f7c9c9 JH |
11512 | PL_savestack_ix = 0; |
11513 | PL_savestack_max = -1; | |
66fe0623 | 11514 | PL_sig_pending = 0; |
25596c82 | 11515 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); |
1d7c1841 GS |
11516 | # else /* !DEBUGGING */ |
11517 | Zero(my_perl, 1, PerlInterpreter); | |
11518 | # endif /* DEBUGGING */ | |
11519 | #endif /* PERL_IMPLICIT_SYS */ | |
83236556 | 11520 | param->flags = flags; |
59b40662 | 11521 | param->proto_perl = proto_perl; |
1d7c1841 GS |
11522 | |
11523 | /* arena roots */ | |
11524 | PL_xiv_arenaroot = NULL; | |
11525 | PL_xiv_root = NULL; | |
612f20c3 | 11526 | PL_xnv_arenaroot = NULL; |
1d7c1841 | 11527 | PL_xnv_root = NULL; |
612f20c3 | 11528 | PL_xrv_arenaroot = NULL; |
1d7c1841 | 11529 | PL_xrv_root = NULL; |
612f20c3 | 11530 | PL_xpv_arenaroot = NULL; |
1d7c1841 | 11531 | PL_xpv_root = NULL; |
612f20c3 | 11532 | PL_xpviv_arenaroot = NULL; |
1d7c1841 | 11533 | PL_xpviv_root = NULL; |
612f20c3 | 11534 | PL_xpvnv_arenaroot = NULL; |
1d7c1841 | 11535 | PL_xpvnv_root = NULL; |
612f20c3 | 11536 | PL_xpvcv_arenaroot = NULL; |
1d7c1841 | 11537 | PL_xpvcv_root = NULL; |
612f20c3 | 11538 | PL_xpvav_arenaroot = NULL; |
1d7c1841 | 11539 | PL_xpvav_root = NULL; |
612f20c3 | 11540 | PL_xpvhv_arenaroot = NULL; |
1d7c1841 | 11541 | PL_xpvhv_root = NULL; |
612f20c3 | 11542 | PL_xpvmg_arenaroot = NULL; |
1d7c1841 | 11543 | PL_xpvmg_root = NULL; |
612f20c3 | 11544 | PL_xpvlv_arenaroot = NULL; |
1d7c1841 | 11545 | PL_xpvlv_root = NULL; |
612f20c3 | 11546 | PL_xpvbm_arenaroot = NULL; |
1d7c1841 | 11547 | PL_xpvbm_root = NULL; |
612f20c3 | 11548 | PL_he_arenaroot = NULL; |
1d7c1841 GS |
11549 | PL_he_root = NULL; |
11550 | PL_nice_chunk = NULL; | |
11551 | PL_nice_chunk_size = 0; | |
11552 | PL_sv_count = 0; | |
11553 | PL_sv_objcount = 0; | |
11554 | PL_sv_root = Nullsv; | |
11555 | PL_sv_arenaroot = Nullsv; | |
11556 | ||
11557 | PL_debug = proto_perl->Idebug; | |
11558 | ||
e5dd39fc | 11559 | #ifdef USE_REENTRANT_API |
68853529 SB |
11560 | /* XXX: things like -Dm will segfault here in perlio, but doing |
11561 | * PERL_SET_CONTEXT(proto_perl); | |
11562 | * breaks too many other things | |
11563 | */ | |
59bd0823 | 11564 | Perl_reentrant_init(aTHX); |
e5dd39fc AB |
11565 | #endif |
11566 | ||
1d7c1841 GS |
11567 | /* create SV map for pointer relocation */ |
11568 | PL_ptr_table = ptr_table_new(); | |
11569 | ||
11570 | /* initialize these special pointers as early as possible */ | |
11571 | SvANY(&PL_sv_undef) = NULL; | |
11572 | SvREFCNT(&PL_sv_undef) = (~(U32)0)/2; | |
11573 | SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL; | |
11574 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef); | |
11575 | ||
1d7c1841 | 11576 | SvANY(&PL_sv_no) = new_XPVNV(); |
1d7c1841 GS |
11577 | SvREFCNT(&PL_sv_no) = (~(U32)0)/2; |
11578 | SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
11579 | SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0); | |
11580 | SvCUR(&PL_sv_no) = 0; | |
11581 | SvLEN(&PL_sv_no) = 1; | |
11582 | SvNVX(&PL_sv_no) = 0; | |
11583 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no); | |
11584 | ||
1d7c1841 | 11585 | SvANY(&PL_sv_yes) = new_XPVNV(); |
1d7c1841 GS |
11586 | SvREFCNT(&PL_sv_yes) = (~(U32)0)/2; |
11587 | SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
11588 | SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1); | |
11589 | SvCUR(&PL_sv_yes) = 1; | |
11590 | SvLEN(&PL_sv_yes) = 2; | |
11591 | SvNVX(&PL_sv_yes) = 1; | |
11592 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes); | |
11593 | ||
05ec9bb3 | 11594 | /* create (a non-shared!) shared string table */ |
1d7c1841 GS |
11595 | PL_strtab = newHV(); |
11596 | HvSHAREKEYS_off(PL_strtab); | |
11597 | hv_ksplit(PL_strtab, 512); | |
11598 | ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab); | |
11599 | ||
05ec9bb3 NIS |
11600 | PL_compiling = proto_perl->Icompiling; |
11601 | ||
11602 | /* These two PVs will be free'd special way so must set them same way op.c does */ | |
11603 | PL_compiling.cop_stashpv = savesharedpv(PL_compiling.cop_stashpv); | |
11604 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_stashpv, PL_compiling.cop_stashpv); | |
11605 | ||
11606 | PL_compiling.cop_file = savesharedpv(PL_compiling.cop_file); | |
11607 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_file, PL_compiling.cop_file); | |
11608 | ||
1d7c1841 GS |
11609 | ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling); |
11610 | if (!specialWARN(PL_compiling.cop_warnings)) | |
d2d73c3e | 11611 | PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings, param); |
ac27b0f5 | 11612 | if (!specialCopIO(PL_compiling.cop_io)) |
d2d73c3e | 11613 | PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io, param); |
1d7c1841 GS |
11614 | PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl); |
11615 | ||
11616 | /* pseudo environmental stuff */ | |
11617 | PL_origargc = proto_perl->Iorigargc; | |
e2975953 | 11618 | PL_origargv = proto_perl->Iorigargv; |
d2d73c3e | 11619 | |
d2d73c3e AB |
11620 | param->stashes = newAV(); /* Setup array of objects to call clone on */ |
11621 | ||
a1ea730d | 11622 | #ifdef PERLIO_LAYERS |
3a1ee7e8 NIS |
11623 | /* Clone PerlIO tables as soon as we can handle general xx_dup() */ |
11624 | PerlIO_clone(aTHX_ proto_perl, param); | |
a1ea730d | 11625 | #endif |
d2d73c3e AB |
11626 | |
11627 | PL_envgv = gv_dup(proto_perl->Ienvgv, param); | |
11628 | PL_incgv = gv_dup(proto_perl->Iincgv, param); | |
11629 | PL_hintgv = gv_dup(proto_perl->Ihintgv, param); | |
1d7c1841 | 11630 | PL_origfilename = SAVEPV(proto_perl->Iorigfilename); |
d2d73c3e AB |
11631 | PL_diehook = sv_dup_inc(proto_perl->Idiehook, param); |
11632 | PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook, param); | |
1d7c1841 GS |
11633 | |
11634 | /* switches */ | |
11635 | PL_minus_c = proto_perl->Iminus_c; | |
d2d73c3e | 11636 | PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel, param); |
1d7c1841 GS |
11637 | PL_localpatches = proto_perl->Ilocalpatches; |
11638 | PL_splitstr = proto_perl->Isplitstr; | |
11639 | PL_preprocess = proto_perl->Ipreprocess; | |
11640 | PL_minus_n = proto_perl->Iminus_n; | |
11641 | PL_minus_p = proto_perl->Iminus_p; | |
11642 | PL_minus_l = proto_perl->Iminus_l; | |
11643 | PL_minus_a = proto_perl->Iminus_a; | |
11644 | PL_minus_F = proto_perl->Iminus_F; | |
11645 | PL_doswitches = proto_perl->Idoswitches; | |
11646 | PL_dowarn = proto_perl->Idowarn; | |
11647 | PL_doextract = proto_perl->Idoextract; | |
11648 | PL_sawampersand = proto_perl->Isawampersand; | |
11649 | PL_unsafe = proto_perl->Iunsafe; | |
11650 | PL_inplace = SAVEPV(proto_perl->Iinplace); | |
d2d73c3e | 11651 | PL_e_script = sv_dup_inc(proto_perl->Ie_script, param); |
1d7c1841 GS |
11652 | PL_perldb = proto_perl->Iperldb; |
11653 | PL_perl_destruct_level = proto_perl->Iperl_destruct_level; | |
1cbb0781 | 11654 | PL_exit_flags = proto_perl->Iexit_flags; |
1d7c1841 GS |
11655 | |
11656 | /* magical thingies */ | |
11657 | /* XXX time(&PL_basetime) when asked for? */ | |
11658 | PL_basetime = proto_perl->Ibasetime; | |
d2d73c3e | 11659 | PL_formfeed = sv_dup(proto_perl->Iformfeed, param); |
1d7c1841 GS |
11660 | |
11661 | PL_maxsysfd = proto_perl->Imaxsysfd; | |
11662 | PL_multiline = proto_perl->Imultiline; | |
11663 | PL_statusvalue = proto_perl->Istatusvalue; | |
11664 | #ifdef VMS | |
11665 | PL_statusvalue_vms = proto_perl->Istatusvalue_vms; | |
11666 | #endif | |
0a378802 | 11667 | PL_encoding = sv_dup(proto_perl->Iencoding, param); |
1d7c1841 | 11668 | |
4a4c6fe3 | 11669 | sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */ |
1f483ca1 JH |
11670 | sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */ |
11671 | sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */ | |
4a4c6fe3 | 11672 | |
d2f185dc AMS |
11673 | /* Clone the regex array */ |
11674 | PL_regex_padav = newAV(); | |
11675 | { | |
11676 | I32 len = av_len((AV*)proto_perl->Iregex_padav); | |
11677 | SV** regexen = AvARRAY((AV*)proto_perl->Iregex_padav); | |
0f95fc41 AB |
11678 | av_push(PL_regex_padav, |
11679 | sv_dup_inc(regexen[0],param)); | |
11680 | for(i = 1; i <= len; i++) { | |
11681 | if(SvREPADTMP(regexen[i])) { | |
11682 | av_push(PL_regex_padav, sv_dup_inc(regexen[i], param)); | |
8cf8f3d1 | 11683 | } else { |
0f95fc41 AB |
11684 | av_push(PL_regex_padav, |
11685 | SvREFCNT_inc( | |
8cf8f3d1 | 11686 | newSViv(PTR2IV(re_dup(INT2PTR(REGEXP *, |
cbfa9890 | 11687 | SvIVX(regexen[i])), param))) |
0f95fc41 AB |
11688 | )); |
11689 | } | |
d2f185dc AMS |
11690 | } |
11691 | } | |
11692 | PL_regex_pad = AvARRAY(PL_regex_padav); | |
1fcf4c12 | 11693 | |
1d7c1841 | 11694 | /* shortcuts to various I/O objects */ |
d2d73c3e AB |
11695 | PL_stdingv = gv_dup(proto_perl->Istdingv, param); |
11696 | PL_stderrgv = gv_dup(proto_perl->Istderrgv, param); | |
11697 | PL_defgv = gv_dup(proto_perl->Idefgv, param); | |
11698 | PL_argvgv = gv_dup(proto_perl->Iargvgv, param); | |
11699 | PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv, param); | |
11700 | PL_argvout_stack = av_dup_inc(proto_perl->Iargvout_stack, param); | |
1d7c1841 GS |
11701 | |
11702 | /* shortcuts to regexp stuff */ | |
d2d73c3e | 11703 | PL_replgv = gv_dup(proto_perl->Ireplgv, param); |
1d7c1841 GS |
11704 | |
11705 | /* shortcuts to misc objects */ | |
d2d73c3e | 11706 | PL_errgv = gv_dup(proto_perl->Ierrgv, param); |
1d7c1841 GS |
11707 | |
11708 | /* shortcuts to debugging objects */ | |
d2d73c3e AB |
11709 | PL_DBgv = gv_dup(proto_perl->IDBgv, param); |
11710 | PL_DBline = gv_dup(proto_perl->IDBline, param); | |
11711 | PL_DBsub = gv_dup(proto_perl->IDBsub, param); | |
11712 | PL_DBsingle = sv_dup(proto_perl->IDBsingle, param); | |
11713 | PL_DBtrace = sv_dup(proto_perl->IDBtrace, param); | |
11714 | PL_DBsignal = sv_dup(proto_perl->IDBsignal, param); | |
06492da6 | 11715 | PL_DBassertion = sv_dup(proto_perl->IDBassertion, param); |
d2d73c3e AB |
11716 | PL_lineary = av_dup(proto_perl->Ilineary, param); |
11717 | PL_dbargs = av_dup(proto_perl->Idbargs, param); | |
1d7c1841 GS |
11718 | |
11719 | /* symbol tables */ | |
d2d73c3e AB |
11720 | PL_defstash = hv_dup_inc(proto_perl->Tdefstash, param); |
11721 | PL_curstash = hv_dup(proto_perl->Tcurstash, param); | |
d2d73c3e AB |
11722 | PL_debstash = hv_dup(proto_perl->Idebstash, param); |
11723 | PL_globalstash = hv_dup(proto_perl->Iglobalstash, param); | |
11724 | PL_curstname = sv_dup_inc(proto_perl->Icurstname, param); | |
11725 | ||
11726 | PL_beginav = av_dup_inc(proto_perl->Ibeginav, param); | |
ee1c5a4e | 11727 | PL_beginav_save = av_dup_inc(proto_perl->Ibeginav_save, param); |
ece599bd | 11728 | PL_checkav_save = av_dup_inc(proto_perl->Icheckav_save, param); |
d2d73c3e AB |
11729 | PL_endav = av_dup_inc(proto_perl->Iendav, param); |
11730 | PL_checkav = av_dup_inc(proto_perl->Icheckav, param); | |
11731 | PL_initav = av_dup_inc(proto_perl->Iinitav, param); | |
1d7c1841 GS |
11732 | |
11733 | PL_sub_generation = proto_perl->Isub_generation; | |
11734 | ||
11735 | /* funky return mechanisms */ | |
11736 | PL_forkprocess = proto_perl->Iforkprocess; | |
11737 | ||
11738 | /* subprocess state */ | |
d2d73c3e | 11739 | PL_fdpid = av_dup_inc(proto_perl->Ifdpid, param); |
1d7c1841 GS |
11740 | |
11741 | /* internal state */ | |
11742 | PL_tainting = proto_perl->Itainting; | |
7135f00b | 11743 | PL_taint_warn = proto_perl->Itaint_warn; |
1d7c1841 GS |
11744 | PL_maxo = proto_perl->Imaxo; |
11745 | if (proto_perl->Iop_mask) | |
11746 | PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo); | |
11747 | else | |
11748 | PL_op_mask = Nullch; | |
06492da6 | 11749 | /* PL_asserting = proto_perl->Iasserting; */ |
1d7c1841 GS |
11750 | |
11751 | /* current interpreter roots */ | |
d2d73c3e | 11752 | PL_main_cv = cv_dup_inc(proto_perl->Imain_cv, param); |
1d7c1841 GS |
11753 | PL_main_root = OpREFCNT_inc(proto_perl->Imain_root); |
11754 | PL_main_start = proto_perl->Imain_start; | |
e977893f | 11755 | PL_eval_root = proto_perl->Ieval_root; |
1d7c1841 GS |
11756 | PL_eval_start = proto_perl->Ieval_start; |
11757 | ||
11758 | /* runtime control stuff */ | |
11759 | PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl); | |
11760 | PL_copline = proto_perl->Icopline; | |
11761 | ||
11762 | PL_filemode = proto_perl->Ifilemode; | |
11763 | PL_lastfd = proto_perl->Ilastfd; | |
11764 | PL_oldname = proto_perl->Ioldname; /* XXX not quite right */ | |
11765 | PL_Argv = NULL; | |
11766 | PL_Cmd = Nullch; | |
11767 | PL_gensym = proto_perl->Igensym; | |
11768 | PL_preambled = proto_perl->Ipreambled; | |
d2d73c3e | 11769 | PL_preambleav = av_dup_inc(proto_perl->Ipreambleav, param); |
1d7c1841 GS |
11770 | PL_laststatval = proto_perl->Ilaststatval; |
11771 | PL_laststype = proto_perl->Ilaststype; | |
11772 | PL_mess_sv = Nullsv; | |
11773 | ||
d2d73c3e | 11774 | PL_ors_sv = sv_dup_inc(proto_perl->Iors_sv, param); |
1d7c1841 GS |
11775 | PL_ofmt = SAVEPV(proto_perl->Iofmt); |
11776 | ||
11777 | /* interpreter atexit processing */ | |
11778 | PL_exitlistlen = proto_perl->Iexitlistlen; | |
11779 | if (PL_exitlistlen) { | |
11780 | New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
11781 | Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
11782 | } | |
11783 | else | |
11784 | PL_exitlist = (PerlExitListEntry*)NULL; | |
d2d73c3e | 11785 | PL_modglobal = hv_dup_inc(proto_perl->Imodglobal, param); |
19e8ce8e AB |
11786 | PL_custom_op_names = hv_dup_inc(proto_perl->Icustom_op_names,param); |
11787 | PL_custom_op_descs = hv_dup_inc(proto_perl->Icustom_op_descs,param); | |
1d7c1841 GS |
11788 | |
11789 | PL_profiledata = NULL; | |
a8fc9800 | 11790 | PL_rsfp = fp_dup(proto_perl->Irsfp, '<', param); |
1d7c1841 | 11791 | /* PL_rsfp_filters entries have fake IoDIRP() */ |
d2d73c3e | 11792 | PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters, param); |
1d7c1841 | 11793 | |
d2d73c3e | 11794 | PL_compcv = cv_dup(proto_perl->Icompcv, param); |
dd2155a4 DM |
11795 | |
11796 | PAD_CLONE_VARS(proto_perl, param); | |
1d7c1841 GS |
11797 | |
11798 | #ifdef HAVE_INTERP_INTERN | |
11799 | sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern); | |
11800 | #endif | |
11801 | ||
11802 | /* more statics moved here */ | |
11803 | PL_generation = proto_perl->Igeneration; | |
d2d73c3e | 11804 | PL_DBcv = cv_dup(proto_perl->IDBcv, param); |
1d7c1841 GS |
11805 | |
11806 | PL_in_clean_objs = proto_perl->Iin_clean_objs; | |
11807 | PL_in_clean_all = proto_perl->Iin_clean_all; | |
11808 | ||
11809 | PL_uid = proto_perl->Iuid; | |
11810 | PL_euid = proto_perl->Ieuid; | |
11811 | PL_gid = proto_perl->Igid; | |
11812 | PL_egid = proto_perl->Iegid; | |
11813 | PL_nomemok = proto_perl->Inomemok; | |
11814 | PL_an = proto_perl->Ian; | |
1d7c1841 GS |
11815 | PL_evalseq = proto_perl->Ievalseq; |
11816 | PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */ | |
11817 | PL_origalen = proto_perl->Iorigalen; | |
11818 | PL_pidstatus = newHV(); /* XXX flag for cloning? */ | |
11819 | PL_osname = SAVEPV(proto_perl->Iosname); | |
5c728af0 | 11820 | PL_sh_path_compat = proto_perl->Ish_path_compat; /* XXX never deallocated */ |
1d7c1841 GS |
11821 | PL_sighandlerp = proto_perl->Isighandlerp; |
11822 | ||
11823 | ||
11824 | PL_runops = proto_perl->Irunops; | |
11825 | ||
11826 | Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char); | |
11827 | ||
11828 | #ifdef CSH | |
11829 | PL_cshlen = proto_perl->Icshlen; | |
74f1b2b8 | 11830 | PL_cshname = proto_perl->Icshname; /* XXX never deallocated */ |
1d7c1841 GS |
11831 | #endif |
11832 | ||
11833 | PL_lex_state = proto_perl->Ilex_state; | |
11834 | PL_lex_defer = proto_perl->Ilex_defer; | |
11835 | PL_lex_expect = proto_perl->Ilex_expect; | |
11836 | PL_lex_formbrack = proto_perl->Ilex_formbrack; | |
11837 | PL_lex_dojoin = proto_perl->Ilex_dojoin; | |
11838 | PL_lex_starts = proto_perl->Ilex_starts; | |
d2d73c3e AB |
11839 | PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff, param); |
11840 | PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl, param); | |
1d7c1841 GS |
11841 | PL_lex_op = proto_perl->Ilex_op; |
11842 | PL_lex_inpat = proto_perl->Ilex_inpat; | |
11843 | PL_lex_inwhat = proto_perl->Ilex_inwhat; | |
11844 | PL_lex_brackets = proto_perl->Ilex_brackets; | |
11845 | i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets); | |
11846 | PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i); | |
11847 | PL_lex_casemods = proto_perl->Ilex_casemods; | |
11848 | i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods); | |
11849 | PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i); | |
11850 | ||
11851 | Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE); | |
11852 | Copy(proto_perl->Inexttype, PL_nexttype, 5, I32); | |
11853 | PL_nexttoke = proto_perl->Inexttoke; | |
11854 | ||
1d773130 TB |
11855 | /* XXX This is probably masking the deeper issue of why |
11856 | * SvANY(proto_perl->Ilinestr) can be NULL at this point. For test case: | |
11857 | * http://archive.develooper.com/perl5-porters%40perl.org/msg83298.html | |
11858 | * (A little debugging with a watchpoint on it may help.) | |
11859 | */ | |
389edf32 TB |
11860 | if (SvANY(proto_perl->Ilinestr)) { |
11861 | PL_linestr = sv_dup_inc(proto_perl->Ilinestr, param); | |
11862 | i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr); | |
11863 | PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11864 | i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr); | |
11865 | PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11866 | i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr); | |
11867 | PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11868 | i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr); | |
11869 | PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11870 | } | |
11871 | else { | |
11872 | PL_linestr = NEWSV(65,79); | |
11873 | sv_upgrade(PL_linestr,SVt_PVIV); | |
11874 | sv_setpvn(PL_linestr,"",0); | |
11875 | PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
11876 | } | |
1d7c1841 | 11877 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
1d7c1841 GS |
11878 | PL_pending_ident = proto_perl->Ipending_ident; |
11879 | PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */ | |
11880 | ||
11881 | PL_expect = proto_perl->Iexpect; | |
11882 | ||
11883 | PL_multi_start = proto_perl->Imulti_start; | |
11884 | PL_multi_end = proto_perl->Imulti_end; | |
11885 | PL_multi_open = proto_perl->Imulti_open; | |
11886 | PL_multi_close = proto_perl->Imulti_close; | |
11887 | ||
11888 | PL_error_count = proto_perl->Ierror_count; | |
11889 | PL_subline = proto_perl->Isubline; | |
d2d73c3e | 11890 | PL_subname = sv_dup_inc(proto_perl->Isubname, param); |
1d7c1841 | 11891 | |
1d773130 | 11892 | /* XXX See comment on SvANY(proto_perl->Ilinestr) above */ |
389edf32 TB |
11893 | if (SvANY(proto_perl->Ilinestr)) { |
11894 | i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr); | |
11895 | PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11896 | i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr); | |
11897 | PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11898 | PL_last_lop_op = proto_perl->Ilast_lop_op; | |
11899 | } | |
11900 | else { | |
11901 | PL_last_uni = SvPVX(PL_linestr); | |
11902 | PL_last_lop = SvPVX(PL_linestr); | |
11903 | PL_last_lop_op = 0; | |
11904 | } | |
1d7c1841 | 11905 | PL_in_my = proto_perl->Iin_my; |
d2d73c3e | 11906 | PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash, param); |
1d7c1841 GS |
11907 | #ifdef FCRYPT |
11908 | PL_cryptseen = proto_perl->Icryptseen; | |
11909 | #endif | |
11910 | ||
11911 | PL_hints = proto_perl->Ihints; | |
11912 | ||
11913 | PL_amagic_generation = proto_perl->Iamagic_generation; | |
11914 | ||
11915 | #ifdef USE_LOCALE_COLLATE | |
11916 | PL_collation_ix = proto_perl->Icollation_ix; | |
11917 | PL_collation_name = SAVEPV(proto_perl->Icollation_name); | |
11918 | PL_collation_standard = proto_perl->Icollation_standard; | |
11919 | PL_collxfrm_base = proto_perl->Icollxfrm_base; | |
11920 | PL_collxfrm_mult = proto_perl->Icollxfrm_mult; | |
11921 | #endif /* USE_LOCALE_COLLATE */ | |
11922 | ||
11923 | #ifdef USE_LOCALE_NUMERIC | |
11924 | PL_numeric_name = SAVEPV(proto_perl->Inumeric_name); | |
11925 | PL_numeric_standard = proto_perl->Inumeric_standard; | |
11926 | PL_numeric_local = proto_perl->Inumeric_local; | |
d2d73c3e | 11927 | PL_numeric_radix_sv = sv_dup_inc(proto_perl->Inumeric_radix_sv, param); |
1d7c1841 GS |
11928 | #endif /* !USE_LOCALE_NUMERIC */ |
11929 | ||
11930 | /* utf8 character classes */ | |
d2d73c3e AB |
11931 | PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum, param); |
11932 | PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc, param); | |
11933 | PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii, param); | |
11934 | PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha, param); | |
11935 | PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space, param); | |
11936 | PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl, param); | |
11937 | PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph, param); | |
11938 | PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit, param); | |
11939 | PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper, param); | |
11940 | PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower, param); | |
11941 | PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print, param); | |
11942 | PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct, param); | |
11943 | PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit, param); | |
11944 | PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark, param); | |
11945 | PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper, param); | |
11946 | PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle, param); | |
11947 | PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower, param); | |
b4e400f9 | 11948 | PL_utf8_tofold = sv_dup_inc(proto_perl->Iutf8_tofold, param); |
82686b01 JH |
11949 | PL_utf8_idstart = sv_dup_inc(proto_perl->Iutf8_idstart, param); |
11950 | PL_utf8_idcont = sv_dup_inc(proto_perl->Iutf8_idcont, param); | |
1d7c1841 | 11951 | |
6c3182a5 | 11952 | /* Did the locale setup indicate UTF-8? */ |
9769094f | 11953 | PL_utf8locale = proto_perl->Iutf8locale; |
6c3182a5 JH |
11954 | /* Unicode features (see perlrun/-C) */ |
11955 | PL_unicode = proto_perl->Iunicode; | |
11956 | ||
11957 | /* Pre-5.8 signals control */ | |
11958 | PL_signals = proto_perl->Isignals; | |
11959 | ||
11960 | /* times() ticks per second */ | |
11961 | PL_clocktick = proto_perl->Iclocktick; | |
11962 | ||
11963 | /* Recursion stopper for PerlIO_find_layer */ | |
11964 | PL_in_load_module = proto_perl->Iin_load_module; | |
11965 | ||
11966 | /* sort() routine */ | |
11967 | PL_sort_RealCmp = proto_perl->Isort_RealCmp; | |
11968 | ||
57c6e6d2 JH |
11969 | /* Not really needed/useful since the reenrant_retint is "volatile", |
11970 | * but do it for consistency's sake. */ | |
11971 | PL_reentrant_retint = proto_perl->Ireentrant_retint; | |
11972 | ||
15a5279a JH |
11973 | /* Hooks to shared SVs and locks. */ |
11974 | PL_sharehook = proto_perl->Isharehook; | |
11975 | PL_lockhook = proto_perl->Ilockhook; | |
11976 | PL_unlockhook = proto_perl->Iunlockhook; | |
11977 | PL_threadhook = proto_perl->Ithreadhook; | |
11978 | ||
bce260cd JH |
11979 | PL_runops_std = proto_perl->Irunops_std; |
11980 | PL_runops_dbg = proto_perl->Irunops_dbg; | |
11981 | ||
11982 | #ifdef THREADS_HAVE_PIDS | |
11983 | PL_ppid = proto_perl->Ippid; | |
11984 | #endif | |
11985 | ||
1d7c1841 GS |
11986 | /* swatch cache */ |
11987 | PL_last_swash_hv = Nullhv; /* reinits on demand */ | |
11988 | PL_last_swash_klen = 0; | |
11989 | PL_last_swash_key[0]= '\0'; | |
11990 | PL_last_swash_tmps = (U8*)NULL; | |
11991 | PL_last_swash_slen = 0; | |
11992 | ||
1d7c1841 GS |
11993 | PL_glob_index = proto_perl->Iglob_index; |
11994 | PL_srand_called = proto_perl->Isrand_called; | |
504f80c1 | 11995 | PL_hash_seed = proto_perl->Ihash_seed; |
008fb0c0 | 11996 | PL_rehash_seed = proto_perl->Irehash_seed; |
1d7c1841 GS |
11997 | PL_uudmap['M'] = 0; /* reinits on demand */ |
11998 | PL_bitcount = Nullch; /* reinits on demand */ | |
11999 | ||
66fe0623 NIS |
12000 | if (proto_perl->Ipsig_pend) { |
12001 | Newz(0, PL_psig_pend, SIG_SIZE, int); | |
9dd79c3f | 12002 | } |
66fe0623 NIS |
12003 | else { |
12004 | PL_psig_pend = (int*)NULL; | |
12005 | } | |
12006 | ||
1d7c1841 | 12007 | if (proto_perl->Ipsig_ptr) { |
76d3c696 JH |
12008 | Newz(0, PL_psig_ptr, SIG_SIZE, SV*); |
12009 | Newz(0, PL_psig_name, SIG_SIZE, SV*); | |
76d3c696 | 12010 | for (i = 1; i < SIG_SIZE; i++) { |
d2d73c3e AB |
12011 | PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i], param); |
12012 | PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i], param); | |
1d7c1841 GS |
12013 | } |
12014 | } | |
12015 | else { | |
12016 | PL_psig_ptr = (SV**)NULL; | |
12017 | PL_psig_name = (SV**)NULL; | |
12018 | } | |
12019 | ||
12020 | /* thrdvar.h stuff */ | |
12021 | ||
a0739874 | 12022 | if (flags & CLONEf_COPY_STACKS) { |
1d7c1841 GS |
12023 | /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */ |
12024 | PL_tmps_ix = proto_perl->Ttmps_ix; | |
12025 | PL_tmps_max = proto_perl->Ttmps_max; | |
12026 | PL_tmps_floor = proto_perl->Ttmps_floor; | |
12027 | Newz(50, PL_tmps_stack, PL_tmps_max, SV*); | |
12028 | i = 0; | |
12029 | while (i <= PL_tmps_ix) { | |
d2d73c3e | 12030 | PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i], param); |
1d7c1841 GS |
12031 | ++i; |
12032 | } | |
12033 | ||
12034 | /* next PUSHMARK() sets *(PL_markstack_ptr+1) */ | |
12035 | i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack; | |
12036 | Newz(54, PL_markstack, i, I32); | |
12037 | PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max | |
12038 | - proto_perl->Tmarkstack); | |
12039 | PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr | |
12040 | - proto_perl->Tmarkstack); | |
12041 | Copy(proto_perl->Tmarkstack, PL_markstack, | |
12042 | PL_markstack_ptr - PL_markstack + 1, I32); | |
12043 | ||
12044 | /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix] | |
12045 | * NOTE: unlike the others! */ | |
12046 | PL_scopestack_ix = proto_perl->Tscopestack_ix; | |
12047 | PL_scopestack_max = proto_perl->Tscopestack_max; | |
12048 | Newz(54, PL_scopestack, PL_scopestack_max, I32); | |
12049 | Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32); | |
12050 | ||
1d7c1841 | 12051 | /* NOTE: si_dup() looks at PL_markstack */ |
d2d73c3e | 12052 | PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo, param); |
1d7c1841 GS |
12053 | |
12054 | /* PL_curstack = PL_curstackinfo->si_stack; */ | |
d2d73c3e AB |
12055 | PL_curstack = av_dup(proto_perl->Tcurstack, param); |
12056 | PL_mainstack = av_dup(proto_perl->Tmainstack, param); | |
1d7c1841 GS |
12057 | |
12058 | /* next PUSHs() etc. set *(PL_stack_sp+1) */ | |
12059 | PL_stack_base = AvARRAY(PL_curstack); | |
12060 | PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp | |
12061 | - proto_perl->Tstack_base); | |
12062 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); | |
12063 | ||
12064 | /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix] | |
12065 | * NOTE: unlike the others! */ | |
12066 | PL_savestack_ix = proto_perl->Tsavestack_ix; | |
12067 | PL_savestack_max = proto_perl->Tsavestack_max; | |
12068 | /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/ | |
d2d73c3e | 12069 | PL_savestack = ss_dup(proto_perl, param); |
1d7c1841 GS |
12070 | } |
12071 | else { | |
12072 | init_stacks(); | |
985e7056 | 12073 | ENTER; /* perl_destruct() wants to LEAVE; */ |
1d7c1841 GS |
12074 | } |
12075 | ||
12076 | PL_start_env = proto_perl->Tstart_env; /* XXXXXX */ | |
12077 | PL_top_env = &PL_start_env; | |
12078 | ||
12079 | PL_op = proto_perl->Top; | |
12080 | ||
12081 | PL_Sv = Nullsv; | |
12082 | PL_Xpv = (XPV*)NULL; | |
12083 | PL_na = proto_perl->Tna; | |
12084 | ||
12085 | PL_statbuf = proto_perl->Tstatbuf; | |
12086 | PL_statcache = proto_perl->Tstatcache; | |
d2d73c3e AB |
12087 | PL_statgv = gv_dup(proto_perl->Tstatgv, param); |
12088 | PL_statname = sv_dup_inc(proto_perl->Tstatname, param); | |
1d7c1841 GS |
12089 | #ifdef HAS_TIMES |
12090 | PL_timesbuf = proto_perl->Ttimesbuf; | |
12091 | #endif | |
12092 | ||
12093 | PL_tainted = proto_perl->Ttainted; | |
12094 | PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */ | |
d2d73c3e AB |
12095 | PL_rs = sv_dup_inc(proto_perl->Trs, param); |
12096 | PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv, param); | |
12097 | PL_ofs_sv = sv_dup_inc(proto_perl->Tofs_sv, param); | |
12098 | PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv, param); | |
1d7c1841 | 12099 | PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */ |
d2d73c3e AB |
12100 | PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget, param); |
12101 | PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget, param); | |
12102 | PL_formtarget = sv_dup(proto_perl->Tformtarget, param); | |
1d7c1841 GS |
12103 | |
12104 | PL_restartop = proto_perl->Trestartop; | |
12105 | PL_in_eval = proto_perl->Tin_eval; | |
12106 | PL_delaymagic = proto_perl->Tdelaymagic; | |
12107 | PL_dirty = proto_perl->Tdirty; | |
12108 | PL_localizing = proto_perl->Tlocalizing; | |
12109 | ||
14dd3ad8 | 12110 | #ifdef PERL_FLEXIBLE_EXCEPTIONS |
1d7c1841 | 12111 | PL_protect = proto_perl->Tprotect; |
14dd3ad8 | 12112 | #endif |
d2d73c3e | 12113 | PL_errors = sv_dup_inc(proto_perl->Terrors, param); |
dd28f7bb | 12114 | PL_hv_fetch_ent_mh = Nullhe; |
1d7c1841 GS |
12115 | PL_modcount = proto_perl->Tmodcount; |
12116 | PL_lastgotoprobe = Nullop; | |
12117 | PL_dumpindent = proto_perl->Tdumpindent; | |
12118 | ||
12119 | PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl); | |
d2d73c3e AB |
12120 | PL_sortstash = hv_dup(proto_perl->Tsortstash, param); |
12121 | PL_firstgv = gv_dup(proto_perl->Tfirstgv, param); | |
12122 | PL_secondgv = gv_dup(proto_perl->Tsecondgv, param); | |
1d7c1841 GS |
12123 | PL_sortcxix = proto_perl->Tsortcxix; |
12124 | PL_efloatbuf = Nullch; /* reinits on demand */ | |
12125 | PL_efloatsize = 0; /* reinits on demand */ | |
12126 | ||
12127 | /* regex stuff */ | |
12128 | ||
12129 | PL_screamfirst = NULL; | |
12130 | PL_screamnext = NULL; | |
12131 | PL_maxscream = -1; /* reinits on demand */ | |
12132 | PL_lastscream = Nullsv; | |
12133 | ||
12134 | PL_watchaddr = NULL; | |
12135 | PL_watchok = Nullch; | |
12136 | ||
12137 | PL_regdummy = proto_perl->Tregdummy; | |
1d7c1841 GS |
12138 | PL_regprecomp = Nullch; |
12139 | PL_regnpar = 0; | |
12140 | PL_regsize = 0; | |
1d7c1841 GS |
12141 | PL_colorset = 0; /* reinits PL_colors[] */ |
12142 | /*PL_colors[6] = {0,0,0,0,0,0};*/ | |
1d7c1841 GS |
12143 | PL_reginput = Nullch; |
12144 | PL_regbol = Nullch; | |
12145 | PL_regeol = Nullch; | |
12146 | PL_regstartp = (I32*)NULL; | |
12147 | PL_regendp = (I32*)NULL; | |
12148 | PL_reglastparen = (U32*)NULL; | |
2d862feb | 12149 | PL_reglastcloseparen = (U32*)NULL; |
1d7c1841 | 12150 | PL_regtill = Nullch; |
1d7c1841 GS |
12151 | PL_reg_start_tmp = (char**)NULL; |
12152 | PL_reg_start_tmpl = 0; | |
12153 | PL_regdata = (struct reg_data*)NULL; | |
12154 | PL_bostr = Nullch; | |
12155 | PL_reg_flags = 0; | |
12156 | PL_reg_eval_set = 0; | |
12157 | PL_regnarrate = 0; | |
12158 | PL_regprogram = (regnode*)NULL; | |
12159 | PL_regindent = 0; | |
12160 | PL_regcc = (CURCUR*)NULL; | |
12161 | PL_reg_call_cc = (struct re_cc_state*)NULL; | |
12162 | PL_reg_re = (regexp*)NULL; | |
12163 | PL_reg_ganch = Nullch; | |
12164 | PL_reg_sv = Nullsv; | |
53c4c00c | 12165 | PL_reg_match_utf8 = FALSE; |
1d7c1841 GS |
12166 | PL_reg_magic = (MAGIC*)NULL; |
12167 | PL_reg_oldpos = 0; | |
12168 | PL_reg_oldcurpm = (PMOP*)NULL; | |
12169 | PL_reg_curpm = (PMOP*)NULL; | |
12170 | PL_reg_oldsaved = Nullch; | |
12171 | PL_reg_oldsavedlen = 0; | |
ed252734 | 12172 | #ifdef PERL_COPY_ON_WRITE |
504cff3b | 12173 | PL_nrs = Nullsv; |
ed252734 | 12174 | #endif |
1d7c1841 GS |
12175 | PL_reg_maxiter = 0; |
12176 | PL_reg_leftiter = 0; | |
12177 | PL_reg_poscache = Nullch; | |
12178 | PL_reg_poscache_size= 0; | |
12179 | ||
12180 | /* RE engine - function pointers */ | |
12181 | PL_regcompp = proto_perl->Tregcompp; | |
12182 | PL_regexecp = proto_perl->Tregexecp; | |
12183 | PL_regint_start = proto_perl->Tregint_start; | |
12184 | PL_regint_string = proto_perl->Tregint_string; | |
12185 | PL_regfree = proto_perl->Tregfree; | |
12186 | ||
12187 | PL_reginterp_cnt = 0; | |
12188 | PL_reg_starttry = 0; | |
12189 | ||
a2efc822 SC |
12190 | /* Pluggable optimizer */ |
12191 | PL_peepp = proto_perl->Tpeepp; | |
12192 | ||
081fc587 AB |
12193 | PL_stashcache = newHV(); |
12194 | ||
a0739874 DM |
12195 | if (!(flags & CLONEf_KEEP_PTR_TABLE)) { |
12196 | ptr_table_free(PL_ptr_table); | |
12197 | PL_ptr_table = NULL; | |
12198 | } | |
8cf8f3d1 | 12199 | |
f284b03f AMS |
12200 | /* Call the ->CLONE method, if it exists, for each of the stashes |
12201 | identified by sv_dup() above. | |
12202 | */ | |
d2d73c3e AB |
12203 | while(av_len(param->stashes) != -1) { |
12204 | HV* stash = (HV*) av_shift(param->stashes); | |
f284b03f AMS |
12205 | GV* cloner = gv_fetchmethod_autoload(stash, "CLONE", 0); |
12206 | if (cloner && GvCV(cloner)) { | |
12207 | dSP; | |
12208 | ENTER; | |
12209 | SAVETMPS; | |
12210 | PUSHMARK(SP); | |
dc507217 | 12211 | XPUSHs(sv_2mortal(newSVpv(HvNAME(stash), 0))); |
f284b03f AMS |
12212 | PUTBACK; |
12213 | call_sv((SV*)GvCV(cloner), G_DISCARD); | |
12214 | FREETMPS; | |
12215 | LEAVE; | |
12216 | } | |
4a09accc | 12217 | } |
a0739874 | 12218 | |
dc507217 | 12219 | SvREFCNT_dec(param->stashes); |
dc507217 | 12220 | |
1d7c1841 | 12221 | return my_perl; |
1d7c1841 GS |
12222 | } |
12223 | ||
1d7c1841 | 12224 | #endif /* USE_ITHREADS */ |
a0ae6670 | 12225 | |
9f4817db | 12226 | /* |
ccfc67b7 JH |
12227 | =head1 Unicode Support |
12228 | ||
9f4817db JH |
12229 | =for apidoc sv_recode_to_utf8 |
12230 | ||
5d170f3a JH |
12231 | The encoding is assumed to be an Encode object, on entry the PV |
12232 | of the sv is assumed to be octets in that encoding, and the sv | |
12233 | will be converted into Unicode (and UTF-8). | |
9f4817db | 12234 | |
5d170f3a JH |
12235 | If the sv already is UTF-8 (or if it is not POK), or if the encoding |
12236 | is not a reference, nothing is done to the sv. If the encoding is not | |
1768d7eb JH |
12237 | an C<Encode::XS> Encoding object, bad things will happen. |
12238 | (See F<lib/encoding.pm> and L<Encode>). | |
9f4817db | 12239 | |
5d170f3a | 12240 | The PV of the sv is returned. |
9f4817db | 12241 | |
5d170f3a JH |
12242 | =cut */ |
12243 | ||
12244 | char * | |
12245 | Perl_sv_recode_to_utf8(pTHX_ SV *sv, SV *encoding) | |
12246 | { | |
220e2d4e | 12247 | if (SvPOK(sv) && !SvUTF8(sv) && !IN_BYTES && SvROK(encoding)) { |
d0063567 DK |
12248 | SV *uni; |
12249 | STRLEN len; | |
12250 | char *s; | |
12251 | dSP; | |
12252 | ENTER; | |
12253 | SAVETMPS; | |
220e2d4e | 12254 | save_re_context(); |
d0063567 DK |
12255 | PUSHMARK(sp); |
12256 | EXTEND(SP, 3); | |
12257 | XPUSHs(encoding); | |
12258 | XPUSHs(sv); | |
7a5fa8a2 | 12259 | /* |
f9893866 NIS |
12260 | NI-S 2002/07/09 |
12261 | Passing sv_yes is wrong - it needs to be or'ed set of constants | |
7a5fa8a2 | 12262 | for Encode::XS, while UTf-8 decode (currently) assumes a true value means |
f9893866 NIS |
12263 | remove converted chars from source. |
12264 | ||
12265 | Both will default the value - let them. | |
7a5fa8a2 | 12266 | |
d0063567 | 12267 | XPUSHs(&PL_sv_yes); |
f9893866 | 12268 | */ |
d0063567 DK |
12269 | PUTBACK; |
12270 | call_method("decode", G_SCALAR); | |
12271 | SPAGAIN; | |
12272 | uni = POPs; | |
12273 | PUTBACK; | |
12274 | s = SvPV(uni, len); | |
d0063567 DK |
12275 | if (s != SvPVX(sv)) { |
12276 | SvGROW(sv, len + 1); | |
12277 | Move(s, SvPVX(sv), len, char); | |
12278 | SvCUR_set(sv, len); | |
12279 | SvPVX(sv)[len] = 0; | |
12280 | } | |
12281 | FREETMPS; | |
12282 | LEAVE; | |
d0063567 | 12283 | SvUTF8_on(sv); |
f9893866 NIS |
12284 | } |
12285 | return SvPVX(sv); | |
9f4817db JH |
12286 | } |
12287 | ||
220e2d4e IH |
12288 | /* |
12289 | =for apidoc sv_cat_decode | |
12290 | ||
12291 | The encoding is assumed to be an Encode object, the PV of the ssv is | |
12292 | assumed to be octets in that encoding and decoding the input starts | |
12293 | from the position which (PV + *offset) pointed to. The dsv will be | |
12294 | concatenated the decoded UTF-8 string from ssv. Decoding will terminate | |
12295 | when the string tstr appears in decoding output or the input ends on | |
12296 | the PV of the ssv. The value which the offset points will be modified | |
12297 | to the last input position on the ssv. | |
68795e93 | 12298 | |
220e2d4e IH |
12299 | Returns TRUE if the terminator was found, else returns FALSE. |
12300 | ||
12301 | =cut */ | |
12302 | ||
12303 | bool | |
12304 | Perl_sv_cat_decode(pTHX_ SV *dsv, SV *encoding, | |
12305 | SV *ssv, int *offset, char *tstr, int tlen) | |
12306 | { | |
a73e8557 | 12307 | bool ret = FALSE; |
220e2d4e | 12308 | if (SvPOK(ssv) && SvPOK(dsv) && SvROK(encoding) && offset) { |
220e2d4e IH |
12309 | SV *offsv; |
12310 | dSP; | |
12311 | ENTER; | |
12312 | SAVETMPS; | |
12313 | save_re_context(); | |
12314 | PUSHMARK(sp); | |
12315 | EXTEND(SP, 6); | |
12316 | XPUSHs(encoding); | |
12317 | XPUSHs(dsv); | |
12318 | XPUSHs(ssv); | |
12319 | XPUSHs(offsv = sv_2mortal(newSViv(*offset))); | |
12320 | XPUSHs(sv_2mortal(newSVpvn(tstr, tlen))); | |
12321 | PUTBACK; | |
12322 | call_method("cat_decode", G_SCALAR); | |
12323 | SPAGAIN; | |
12324 | ret = SvTRUE(TOPs); | |
12325 | *offset = SvIV(offsv); | |
12326 | PUTBACK; | |
12327 | FREETMPS; | |
12328 | LEAVE; | |
220e2d4e | 12329 | } |
a73e8557 JH |
12330 | else |
12331 | Perl_croak(aTHX_ "Invalid argument to sv_cat_decode"); | |
12332 | return ret; | |
220e2d4e | 12333 | } |
f9893866 | 12334 |