Commit | Line | Data |
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a0d0e21e | 1 | /* sv.c |
79072805 | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
241d1a3b | 4 | * 2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others |
79072805 LW |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
a0d0e21e | 9 | * "I wonder what the Entish is for 'yes' and 'no'," he thought. |
645c22ef DM |
10 | * |
11 | * | |
5e045b90 AMS |
12 | * This file contains the code that creates, manipulates and destroys |
13 | * scalar values (SVs). The other types (AV, HV, GV, etc.) reuse the | |
14 | * structure of an SV, so their creation and destruction is handled | |
15 | * here; higher-level functions are in av.c, hv.c, and so on. Opcode | |
16 | * level functions (eg. substr, split, join) for each of the types are | |
17 | * in the pp*.c files. | |
79072805 LW |
18 | */ |
19 | ||
20 | #include "EXTERN.h" | |
864dbfa3 | 21 | #define PERL_IN_SV_C |
79072805 | 22 | #include "perl.h" |
d2f185dc | 23 | #include "regcomp.h" |
79072805 | 24 | |
51371543 | 25 | #define FCALL *f |
2c5424a7 | 26 | |
2f8ed50e OS |
27 | #ifdef __Lynx__ |
28 | /* Missing proto on LynxOS */ | |
29 | char *gconvert(double, int, int, char *); | |
30 | #endif | |
31 | ||
e23c8137 JH |
32 | #ifdef PERL_UTF8_CACHE_ASSERT |
33 | /* The cache element 0 is the Unicode offset; | |
34 | * the cache element 1 is the byte offset of the element 0; | |
35 | * the cache element 2 is the Unicode length of the substring; | |
36 | * the cache element 3 is the byte length of the substring; | |
37 | * The checking of the substring side would be good | |
38 | * but substr() has enough code paths to make my head spin; | |
39 | * if adding more checks watch out for the following tests: | |
40 | * t/op/index.t t/op/length.t t/op/pat.t t/op/substr.t | |
41 | * lib/utf8.t lib/Unicode/Collate/t/index.t | |
42 | * --jhi | |
43 | */ | |
44 | #define ASSERT_UTF8_CACHE(cache) \ | |
45 | STMT_START { if (cache) { assert((cache)[0] <= (cache)[1]); } } STMT_END | |
46 | #else | |
47 | #define ASSERT_UTF8_CACHE(cache) NOOP | |
48 | #endif | |
49 | ||
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 | ||
fd0854ff DM |
168 | #ifdef DEBUG_LEAKING_SCALARS |
169 | # ifdef NETWARE | |
170 | # define FREE_SV_DEBUG_FILE(sv) PerlMemfree((sv)->sv_debug_file) | |
171 | # else | |
172 | # define FREE_SV_DEBUG_FILE(sv) PerlMemShared_free((sv)->sv_debug_file) | |
173 | # endif | |
174 | #else | |
175 | # define FREE_SV_DEBUG_FILE(sv) | |
176 | #endif | |
177 | ||
053fc874 GS |
178 | #define plant_SV(p) \ |
179 | STMT_START { \ | |
fd0854ff | 180 | FREE_SV_DEBUG_FILE(p); \ |
053fc874 GS |
181 | SvANY(p) = (void *)PL_sv_root; \ |
182 | SvFLAGS(p) = SVTYPEMASK; \ | |
183 | PL_sv_root = (p); \ | |
184 | --PL_sv_count; \ | |
185 | } STMT_END | |
a0d0e21e | 186 | |
fba3b22e | 187 | /* sv_mutex must be held while calling uproot_SV() */ |
053fc874 GS |
188 | #define uproot_SV(p) \ |
189 | STMT_START { \ | |
190 | (p) = PL_sv_root; \ | |
191 | PL_sv_root = (SV*)SvANY(p); \ | |
192 | ++PL_sv_count; \ | |
193 | } STMT_END | |
194 | ||
645c22ef DM |
195 | |
196 | /* new_SV(): return a new, empty SV head */ | |
197 | ||
eba0f806 DM |
198 | #ifdef DEBUG_LEAKING_SCALARS |
199 | /* provide a real function for a debugger to play with */ | |
200 | STATIC SV* | |
201 | S_new_SV(pTHX) | |
202 | { | |
203 | SV* sv; | |
204 | ||
205 | LOCK_SV_MUTEX; | |
206 | if (PL_sv_root) | |
207 | uproot_SV(sv); | |
208 | else | |
209 | sv = more_sv(); | |
210 | UNLOCK_SV_MUTEX; | |
211 | SvANY(sv) = 0; | |
212 | SvREFCNT(sv) = 1; | |
213 | SvFLAGS(sv) = 0; | |
fd0854ff DM |
214 | sv->sv_debug_optype = PL_op ? PL_op->op_type : 0; |
215 | sv->sv_debug_line = (U16) ((PL_copline == NOLINE) ? | |
216 | (PL_curcop ? CopLINE(PL_curcop) : 0) : PL_copline); | |
217 | sv->sv_debug_inpad = 0; | |
218 | sv->sv_debug_cloned = 0; | |
219 | # ifdef NETWARE | |
220 | sv->sv_debug_file = PL_curcop ? savepv(CopFILE(PL_curcop)): NULL; | |
221 | # else | |
222 | sv->sv_debug_file = PL_curcop ? savesharedpv(CopFILE(PL_curcop)): NULL; | |
223 | # endif | |
224 | ||
eba0f806 DM |
225 | return sv; |
226 | } | |
227 | # define new_SV(p) (p)=S_new_SV(aTHX) | |
228 | ||
229 | #else | |
230 | # define new_SV(p) \ | |
053fc874 GS |
231 | STMT_START { \ |
232 | LOCK_SV_MUTEX; \ | |
233 | if (PL_sv_root) \ | |
234 | uproot_SV(p); \ | |
235 | else \ | |
236 | (p) = more_sv(); \ | |
237 | UNLOCK_SV_MUTEX; \ | |
238 | SvANY(p) = 0; \ | |
239 | SvREFCNT(p) = 1; \ | |
240 | SvFLAGS(p) = 0; \ | |
241 | } STMT_END | |
eba0f806 | 242 | #endif |
463ee0b2 | 243 | |
645c22ef DM |
244 | |
245 | /* del_SV(): return an empty SV head to the free list */ | |
246 | ||
a0d0e21e | 247 | #ifdef DEBUGGING |
4561caa4 | 248 | |
053fc874 GS |
249 | #define del_SV(p) \ |
250 | STMT_START { \ | |
251 | LOCK_SV_MUTEX; \ | |
aea4f609 | 252 | if (DEBUG_D_TEST) \ |
053fc874 GS |
253 | del_sv(p); \ |
254 | else \ | |
255 | plant_SV(p); \ | |
256 | UNLOCK_SV_MUTEX; \ | |
257 | } STMT_END | |
a0d0e21e | 258 | |
76e3520e | 259 | STATIC void |
cea2e8a9 | 260 | S_del_sv(pTHX_ SV *p) |
463ee0b2 | 261 | { |
aea4f609 | 262 | if (DEBUG_D_TEST) { |
4633a7c4 | 263 | SV* sva; |
a0d0e21e LW |
264 | SV* sv; |
265 | SV* svend; | |
266 | int ok = 0; | |
3280af22 | 267 | for (sva = PL_sv_arenaroot; sva; sva = (SV *) SvANY(sva)) { |
4633a7c4 LW |
268 | sv = sva + 1; |
269 | svend = &sva[SvREFCNT(sva)]; | |
a0d0e21e LW |
270 | if (p >= sv && p < svend) |
271 | ok = 1; | |
272 | } | |
273 | if (!ok) { | |
0453d815 | 274 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 275 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
472d47bc SB |
276 | "Attempt to free non-arena SV: 0x%"UVxf |
277 | pTHX__FORMAT, PTR2UV(p) pTHX__VALUE); | |
a0d0e21e LW |
278 | return; |
279 | } | |
280 | } | |
4561caa4 | 281 | plant_SV(p); |
463ee0b2 | 282 | } |
a0d0e21e | 283 | |
4561caa4 CS |
284 | #else /* ! DEBUGGING */ |
285 | ||
286 | #define del_SV(p) plant_SV(p) | |
287 | ||
288 | #endif /* DEBUGGING */ | |
463ee0b2 | 289 | |
645c22ef DM |
290 | |
291 | /* | |
ccfc67b7 JH |
292 | =head1 SV Manipulation Functions |
293 | ||
645c22ef DM |
294 | =for apidoc sv_add_arena |
295 | ||
296 | Given a chunk of memory, link it to the head of the list of arenas, | |
297 | and split it into a list of free SVs. | |
298 | ||
299 | =cut | |
300 | */ | |
301 | ||
4633a7c4 | 302 | void |
864dbfa3 | 303 | Perl_sv_add_arena(pTHX_ char *ptr, U32 size, U32 flags) |
463ee0b2 | 304 | { |
4633a7c4 | 305 | SV* sva = (SV*)ptr; |
463ee0b2 LW |
306 | register SV* sv; |
307 | register SV* svend; | |
4633a7c4 LW |
308 | |
309 | /* The first SV in an arena isn't an SV. */ | |
3280af22 | 310 | SvANY(sva) = (void *) PL_sv_arenaroot; /* ptr to next arena */ |
4633a7c4 LW |
311 | SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */ |
312 | SvFLAGS(sva) = flags; /* FAKE if not to be freed */ | |
313 | ||
3280af22 NIS |
314 | PL_sv_arenaroot = sva; |
315 | PL_sv_root = sva + 1; | |
4633a7c4 LW |
316 | |
317 | svend = &sva[SvREFCNT(sva) - 1]; | |
318 | sv = sva + 1; | |
463ee0b2 | 319 | while (sv < svend) { |
a0d0e21e | 320 | SvANY(sv) = (void *)(SV*)(sv + 1); |
978b032e | 321 | SvREFCNT(sv) = 0; |
8990e307 | 322 | SvFLAGS(sv) = SVTYPEMASK; |
463ee0b2 LW |
323 | sv++; |
324 | } | |
325 | SvANY(sv) = 0; | |
4633a7c4 LW |
326 | SvFLAGS(sv) = SVTYPEMASK; |
327 | } | |
328 | ||
645c22ef DM |
329 | /* make some more SVs by adding another arena */ |
330 | ||
fba3b22e | 331 | /* sv_mutex must be held while calling more_sv() */ |
76e3520e | 332 | STATIC SV* |
cea2e8a9 | 333 | S_more_sv(pTHX) |
4633a7c4 | 334 | { |
4561caa4 CS |
335 | register SV* sv; |
336 | ||
3280af22 NIS |
337 | if (PL_nice_chunk) { |
338 | sv_add_arena(PL_nice_chunk, PL_nice_chunk_size, 0); | |
339 | PL_nice_chunk = Nullch; | |
30ad99e7 | 340 | PL_nice_chunk_size = 0; |
c07a80fd | 341 | } |
1edc1566 | 342 | else { |
343 | char *chunk; /* must use New here to match call to */ | |
344 | New(704,chunk,1008,char); /* Safefree() in sv_free_arenas() */ | |
345 | sv_add_arena(chunk, 1008, 0); | |
346 | } | |
4561caa4 CS |
347 | uproot_SV(sv); |
348 | return sv; | |
463ee0b2 LW |
349 | } |
350 | ||
055972dc DM |
351 | /* visit(): call the named function for each non-free SV in the arenas |
352 | * whose flags field matches the flags/mask args. */ | |
645c22ef | 353 | |
5226ed68 | 354 | STATIC I32 |
055972dc | 355 | S_visit(pTHX_ SVFUNC_t f, U32 flags, U32 mask) |
8990e307 | 356 | { |
4633a7c4 | 357 | SV* sva; |
8990e307 LW |
358 | SV* sv; |
359 | register SV* svend; | |
5226ed68 | 360 | I32 visited = 0; |
8990e307 | 361 | |
3280af22 | 362 | for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) { |
4633a7c4 | 363 | svend = &sva[SvREFCNT(sva)]; |
4561caa4 | 364 | for (sv = sva + 1; sv < svend; ++sv) { |
055972dc DM |
365 | if (SvTYPE(sv) != SVTYPEMASK |
366 | && (sv->sv_flags & mask) == flags | |
367 | && SvREFCNT(sv)) | |
368 | { | |
acfe0abc | 369 | (FCALL)(aTHX_ sv); |
5226ed68 JH |
370 | ++visited; |
371 | } | |
8990e307 LW |
372 | } |
373 | } | |
5226ed68 | 374 | return visited; |
8990e307 LW |
375 | } |
376 | ||
758a08c3 JH |
377 | #ifdef DEBUGGING |
378 | ||
645c22ef DM |
379 | /* called by sv_report_used() for each live SV */ |
380 | ||
381 | static void | |
acfe0abc | 382 | do_report_used(pTHX_ SV *sv) |
645c22ef DM |
383 | { |
384 | if (SvTYPE(sv) != SVTYPEMASK) { | |
385 | PerlIO_printf(Perl_debug_log, "****\n"); | |
386 | sv_dump(sv); | |
387 | } | |
388 | } | |
758a08c3 | 389 | #endif |
645c22ef DM |
390 | |
391 | /* | |
392 | =for apidoc sv_report_used | |
393 | ||
394 | Dump the contents of all SVs not yet freed. (Debugging aid). | |
395 | ||
396 | =cut | |
397 | */ | |
398 | ||
8990e307 | 399 | void |
864dbfa3 | 400 | Perl_sv_report_used(pTHX) |
4561caa4 | 401 | { |
ff270d3a | 402 | #ifdef DEBUGGING |
055972dc | 403 | visit(do_report_used, 0, 0); |
ff270d3a | 404 | #endif |
4561caa4 CS |
405 | } |
406 | ||
645c22ef DM |
407 | /* called by sv_clean_objs() for each live SV */ |
408 | ||
409 | static void | |
acfe0abc | 410 | do_clean_objs(pTHX_ SV *sv) |
645c22ef DM |
411 | { |
412 | SV* rv; | |
413 | ||
414 | if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) { | |
415 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv))); | |
416 | if (SvWEAKREF(sv)) { | |
417 | sv_del_backref(sv); | |
418 | SvWEAKREF_off(sv); | |
419 | SvRV(sv) = 0; | |
420 | } else { | |
421 | SvROK_off(sv); | |
422 | SvRV(sv) = 0; | |
423 | SvREFCNT_dec(rv); | |
424 | } | |
425 | } | |
426 | ||
427 | /* XXX Might want to check arrays, etc. */ | |
428 | } | |
429 | ||
430 | /* called by sv_clean_objs() for each live SV */ | |
431 | ||
432 | #ifndef DISABLE_DESTRUCTOR_KLUDGE | |
433 | static void | |
acfe0abc | 434 | do_clean_named_objs(pTHX_ SV *sv) |
645c22ef DM |
435 | { |
436 | if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) { | |
437 | if ( SvOBJECT(GvSV(sv)) || | |
438 | (GvAV(sv) && SvOBJECT(GvAV(sv))) || | |
439 | (GvHV(sv) && SvOBJECT(GvHV(sv))) || | |
440 | (GvIO(sv) && SvOBJECT(GvIO(sv))) || | |
441 | (GvCV(sv) && SvOBJECT(GvCV(sv))) ) | |
442 | { | |
443 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv))); | |
ec5f3c78 | 444 | SvFLAGS(sv) |= SVf_BREAK; |
645c22ef DM |
445 | SvREFCNT_dec(sv); |
446 | } | |
447 | } | |
448 | } | |
449 | #endif | |
450 | ||
451 | /* | |
452 | =for apidoc sv_clean_objs | |
453 | ||
454 | Attempt to destroy all objects not yet freed | |
455 | ||
456 | =cut | |
457 | */ | |
458 | ||
4561caa4 | 459 | void |
864dbfa3 | 460 | Perl_sv_clean_objs(pTHX) |
4561caa4 | 461 | { |
3280af22 | 462 | PL_in_clean_objs = TRUE; |
055972dc | 463 | visit(do_clean_objs, SVf_ROK, SVf_ROK); |
4561caa4 | 464 | #ifndef DISABLE_DESTRUCTOR_KLUDGE |
2d0f3c12 | 465 | /* some barnacles may yet remain, clinging to typeglobs */ |
055972dc | 466 | visit(do_clean_named_objs, SVt_PVGV, SVTYPEMASK); |
4561caa4 | 467 | #endif |
3280af22 | 468 | PL_in_clean_objs = FALSE; |
4561caa4 CS |
469 | } |
470 | ||
645c22ef DM |
471 | /* called by sv_clean_all() for each live SV */ |
472 | ||
473 | static void | |
acfe0abc | 474 | do_clean_all(pTHX_ SV *sv) |
645c22ef DM |
475 | { |
476 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) )); | |
477 | SvFLAGS(sv) |= SVf_BREAK; | |
0e705b3b DM |
478 | if (PL_comppad == (AV*)sv) { |
479 | PL_comppad = Nullav; | |
480 | PL_curpad = Null(SV**); | |
481 | } | |
645c22ef DM |
482 | SvREFCNT_dec(sv); |
483 | } | |
484 | ||
485 | /* | |
486 | =for apidoc sv_clean_all | |
487 | ||
488 | Decrement the refcnt of each remaining SV, possibly triggering a | |
489 | cleanup. This function may have to be called multiple times to free | |
ff276b08 | 490 | SVs which are in complex self-referential hierarchies. |
645c22ef DM |
491 | |
492 | =cut | |
493 | */ | |
494 | ||
5226ed68 | 495 | I32 |
864dbfa3 | 496 | Perl_sv_clean_all(pTHX) |
8990e307 | 497 | { |
5226ed68 | 498 | I32 cleaned; |
3280af22 | 499 | PL_in_clean_all = TRUE; |
055972dc | 500 | cleaned = visit(do_clean_all, 0,0); |
3280af22 | 501 | PL_in_clean_all = FALSE; |
5226ed68 | 502 | return cleaned; |
8990e307 | 503 | } |
463ee0b2 | 504 | |
645c22ef DM |
505 | /* |
506 | =for apidoc sv_free_arenas | |
507 | ||
508 | Deallocate the memory used by all arenas. Note that all the individual SV | |
509 | heads and bodies within the arenas must already have been freed. | |
510 | ||
511 | =cut | |
512 | */ | |
513 | ||
4633a7c4 | 514 | void |
864dbfa3 | 515 | Perl_sv_free_arenas(pTHX) |
4633a7c4 LW |
516 | { |
517 | SV* sva; | |
518 | SV* svanext; | |
612f20c3 | 519 | XPV *arena, *arenanext; |
4633a7c4 LW |
520 | |
521 | /* Free arenas here, but be careful about fake ones. (We assume | |
522 | contiguity of the fake ones with the corresponding real ones.) */ | |
523 | ||
3280af22 | 524 | for (sva = PL_sv_arenaroot; sva; sva = svanext) { |
4633a7c4 LW |
525 | svanext = (SV*) SvANY(sva); |
526 | while (svanext && SvFAKE(svanext)) | |
527 | svanext = (SV*) SvANY(svanext); | |
528 | ||
529 | if (!SvFAKE(sva)) | |
1edc1566 | 530 | Safefree((void *)sva); |
4633a7c4 | 531 | } |
5f05dabc | 532 | |
612f20c3 GS |
533 | for (arena = PL_xiv_arenaroot; arena; arena = arenanext) { |
534 | arenanext = (XPV*)arena->xpv_pv; | |
535 | Safefree(arena); | |
536 | } | |
537 | PL_xiv_arenaroot = 0; | |
bf9cdc68 | 538 | PL_xiv_root = 0; |
612f20c3 GS |
539 | |
540 | for (arena = PL_xnv_arenaroot; arena; arena = arenanext) { | |
541 | arenanext = (XPV*)arena->xpv_pv; | |
542 | Safefree(arena); | |
543 | } | |
544 | PL_xnv_arenaroot = 0; | |
bf9cdc68 | 545 | PL_xnv_root = 0; |
612f20c3 GS |
546 | |
547 | for (arena = PL_xrv_arenaroot; arena; arena = arenanext) { | |
548 | arenanext = (XPV*)arena->xpv_pv; | |
549 | Safefree(arena); | |
550 | } | |
551 | PL_xrv_arenaroot = 0; | |
bf9cdc68 | 552 | PL_xrv_root = 0; |
612f20c3 GS |
553 | |
554 | for (arena = PL_xpv_arenaroot; arena; arena = arenanext) { | |
555 | arenanext = (XPV*)arena->xpv_pv; | |
556 | Safefree(arena); | |
557 | } | |
558 | PL_xpv_arenaroot = 0; | |
bf9cdc68 | 559 | PL_xpv_root = 0; |
612f20c3 GS |
560 | |
561 | for (arena = (XPV*)PL_xpviv_arenaroot; arena; arena = arenanext) { | |
562 | arenanext = (XPV*)arena->xpv_pv; | |
563 | Safefree(arena); | |
564 | } | |
565 | PL_xpviv_arenaroot = 0; | |
bf9cdc68 | 566 | PL_xpviv_root = 0; |
612f20c3 GS |
567 | |
568 | for (arena = (XPV*)PL_xpvnv_arenaroot; arena; arena = arenanext) { | |
569 | arenanext = (XPV*)arena->xpv_pv; | |
570 | Safefree(arena); | |
571 | } | |
572 | PL_xpvnv_arenaroot = 0; | |
bf9cdc68 | 573 | PL_xpvnv_root = 0; |
612f20c3 GS |
574 | |
575 | for (arena = (XPV*)PL_xpvcv_arenaroot; arena; arena = arenanext) { | |
576 | arenanext = (XPV*)arena->xpv_pv; | |
577 | Safefree(arena); | |
578 | } | |
579 | PL_xpvcv_arenaroot = 0; | |
bf9cdc68 | 580 | PL_xpvcv_root = 0; |
612f20c3 GS |
581 | |
582 | for (arena = (XPV*)PL_xpvav_arenaroot; arena; arena = arenanext) { | |
583 | arenanext = (XPV*)arena->xpv_pv; | |
584 | Safefree(arena); | |
585 | } | |
586 | PL_xpvav_arenaroot = 0; | |
bf9cdc68 | 587 | PL_xpvav_root = 0; |
612f20c3 GS |
588 | |
589 | for (arena = (XPV*)PL_xpvhv_arenaroot; arena; arena = arenanext) { | |
590 | arenanext = (XPV*)arena->xpv_pv; | |
591 | Safefree(arena); | |
592 | } | |
593 | PL_xpvhv_arenaroot = 0; | |
bf9cdc68 | 594 | PL_xpvhv_root = 0; |
612f20c3 GS |
595 | |
596 | for (arena = (XPV*)PL_xpvmg_arenaroot; arena; arena = arenanext) { | |
597 | arenanext = (XPV*)arena->xpv_pv; | |
598 | Safefree(arena); | |
599 | } | |
600 | PL_xpvmg_arenaroot = 0; | |
bf9cdc68 | 601 | PL_xpvmg_root = 0; |
612f20c3 GS |
602 | |
603 | for (arena = (XPV*)PL_xpvlv_arenaroot; arena; arena = arenanext) { | |
604 | arenanext = (XPV*)arena->xpv_pv; | |
605 | Safefree(arena); | |
606 | } | |
607 | PL_xpvlv_arenaroot = 0; | |
bf9cdc68 | 608 | PL_xpvlv_root = 0; |
612f20c3 GS |
609 | |
610 | for (arena = (XPV*)PL_xpvbm_arenaroot; arena; arena = arenanext) { | |
611 | arenanext = (XPV*)arena->xpv_pv; | |
612 | Safefree(arena); | |
613 | } | |
614 | PL_xpvbm_arenaroot = 0; | |
bf9cdc68 | 615 | PL_xpvbm_root = 0; |
612f20c3 GS |
616 | |
617 | for (arena = (XPV*)PL_he_arenaroot; arena; arena = arenanext) { | |
618 | arenanext = (XPV*)arena->xpv_pv; | |
619 | Safefree(arena); | |
620 | } | |
621 | PL_he_arenaroot = 0; | |
bf9cdc68 | 622 | PL_he_root = 0; |
612f20c3 | 623 | |
3280af22 NIS |
624 | if (PL_nice_chunk) |
625 | Safefree(PL_nice_chunk); | |
626 | PL_nice_chunk = Nullch; | |
627 | PL_nice_chunk_size = 0; | |
628 | PL_sv_arenaroot = 0; | |
629 | PL_sv_root = 0; | |
4633a7c4 LW |
630 | } |
631 | ||
29489e7c DM |
632 | /* --------------------------------------------------------------------- |
633 | * | |
634 | * support functions for report_uninit() | |
635 | */ | |
636 | ||
637 | /* the maxiumum size of array or hash where we will scan looking | |
638 | * for the undefined element that triggered the warning */ | |
639 | ||
640 | #define FUV_MAX_SEARCH_SIZE 1000 | |
641 | ||
642 | /* Look for an entry in the hash whose value has the same SV as val; | |
643 | * If so, return a mortal copy of the key. */ | |
644 | ||
645 | STATIC SV* | |
646 | S_find_hash_subscript(pTHX_ HV *hv, SV* val) | |
647 | { | |
648 | register HE **array; | |
649 | register HE *entry; | |
650 | I32 i; | |
651 | ||
652 | if (!hv || SvMAGICAL(hv) || !HvARRAY(hv) || | |
653 | (HvTOTALKEYS(hv) > FUV_MAX_SEARCH_SIZE)) | |
654 | return Nullsv; | |
655 | ||
656 | array = HvARRAY(hv); | |
657 | ||
658 | for (i=HvMAX(hv); i>0; i--) { | |
659 | for (entry = array[i]; entry; entry = HeNEXT(entry)) { | |
660 | if (HeVAL(entry) != val) | |
661 | continue; | |
662 | if ( HeVAL(entry) == &PL_sv_undef || | |
663 | HeVAL(entry) == &PL_sv_placeholder) | |
664 | continue; | |
665 | if (!HeKEY(entry)) | |
666 | return Nullsv; | |
667 | if (HeKLEN(entry) == HEf_SVKEY) | |
668 | return sv_mortalcopy(HeKEY_sv(entry)); | |
669 | return sv_2mortal(newSVpvn(HeKEY(entry), HeKLEN(entry))); | |
670 | } | |
671 | } | |
672 | return Nullsv; | |
673 | } | |
674 | ||
675 | /* Look for an entry in the array whose value has the same SV as val; | |
676 | * If so, return the index, otherwise return -1. */ | |
677 | ||
678 | STATIC I32 | |
679 | S_find_array_subscript(pTHX_ AV *av, SV* val) | |
680 | { | |
681 | SV** svp; | |
682 | I32 i; | |
683 | if (!av || SvMAGICAL(av) || !AvARRAY(av) || | |
684 | (AvFILLp(av) > FUV_MAX_SEARCH_SIZE)) | |
685 | return -1; | |
686 | ||
687 | svp = AvARRAY(av); | |
688 | for (i=AvFILLp(av); i>=0; i--) { | |
689 | if (svp[i] == val && svp[i] != &PL_sv_undef) | |
690 | return i; | |
691 | } | |
692 | return -1; | |
693 | } | |
694 | ||
695 | /* S_varname(): return the name of a variable, optionally with a subscript. | |
696 | * If gv is non-zero, use the name of that global, along with gvtype (one | |
697 | * of "$", "@", "%"); otherwise use the name of the lexical at pad offset | |
698 | * targ. Depending on the value of the subscript_type flag, return: | |
699 | */ | |
700 | ||
701 | #define FUV_SUBSCRIPT_NONE 1 /* "@foo" */ | |
702 | #define FUV_SUBSCRIPT_ARRAY 2 /* "$foo[aindex]" */ | |
703 | #define FUV_SUBSCRIPT_HASH 3 /* "$foo{keyname}" */ | |
704 | #define FUV_SUBSCRIPT_WITHIN 4 /* "within @foo" */ | |
705 | ||
706 | STATIC SV* | |
bfed75c6 | 707 | S_varname(pTHX_ GV *gv, const char *gvtype, PADOFFSET targ, |
29489e7c DM |
708 | SV* keyname, I32 aindex, int subscript_type) |
709 | { | |
710 | AV *av; | |
711 | ||
712 | SV *sv, *name; | |
713 | ||
714 | name = sv_newmortal(); | |
715 | if (gv) { | |
716 | ||
717 | /* simulate gv_fullname4(), but add literal '^' for $^FOO names | |
718 | * XXX get rid of all this if gv_fullnameX() ever supports this | |
719 | * directly */ | |
720 | ||
bfed75c6 | 721 | const char *p; |
29489e7c DM |
722 | HV *hv = GvSTASH(gv); |
723 | sv_setpv(name, gvtype); | |
724 | if (!hv) | |
725 | p = "???"; | |
bfed75c6 | 726 | else if (!(p=HvNAME(hv))) |
29489e7c | 727 | p = "__ANON__"; |
29489e7c DM |
728 | if (strNE(p, "main")) { |
729 | sv_catpv(name,p); | |
730 | sv_catpvn(name,"::", 2); | |
731 | } | |
732 | if (GvNAMELEN(gv)>= 1 && | |
733 | ((unsigned int)*GvNAME(gv)) <= 26) | |
734 | { /* handle $^FOO */ | |
735 | Perl_sv_catpvf(aTHX_ name,"^%c", *GvNAME(gv) + 'A' - 1); | |
736 | sv_catpvn(name,GvNAME(gv)+1,GvNAMELEN(gv)-1); | |
737 | } | |
738 | else | |
739 | sv_catpvn(name,GvNAME(gv),GvNAMELEN(gv)); | |
740 | } | |
741 | else { | |
742 | U32 u; | |
743 | CV *cv = find_runcv(&u); | |
744 | if (!cv || !CvPADLIST(cv)) | |
745 | return Nullsv;; | |
746 | av = (AV*)(*av_fetch(CvPADLIST(cv), 0, FALSE)); | |
747 | sv = *av_fetch(av, targ, FALSE); | |
748 | /* SvLEN in a pad name is not to be trusted */ | |
749 | sv_setpv(name, SvPV_nolen(sv)); | |
750 | } | |
751 | ||
752 | if (subscript_type == FUV_SUBSCRIPT_HASH) { | |
753 | *SvPVX(name) = '$'; | |
754 | sv = NEWSV(0,0); | |
755 | Perl_sv_catpvf(aTHX_ name, "{%s}", | |
756 | pv_display(sv,SvPVX(keyname), SvCUR(keyname), 0, 32)); | |
757 | SvREFCNT_dec(sv); | |
758 | } | |
759 | else if (subscript_type == FUV_SUBSCRIPT_ARRAY) { | |
760 | *SvPVX(name) = '$'; | |
265a12b8 | 761 | Perl_sv_catpvf(aTHX_ name, "[%"IVdf"]", (IV)aindex); |
29489e7c DM |
762 | } |
763 | else if (subscript_type == FUV_SUBSCRIPT_WITHIN) | |
764 | sv_insert(name, 0, 0, "within ", 7); | |
765 | ||
766 | return name; | |
767 | } | |
768 | ||
769 | ||
770 | /* | |
771 | =for apidoc find_uninit_var | |
772 | ||
773 | Find the name of the undefined variable (if any) that caused the operator o | |
774 | to issue a "Use of uninitialized value" warning. | |
775 | If match is true, only return a name if it's value matches uninit_sv. | |
776 | So roughly speaking, if a unary operator (such as OP_COS) generates a | |
777 | warning, then following the direct child of the op may yield an | |
778 | OP_PADSV or OP_GV that gives the name of the undefined variable. On the | |
779 | other hand, with OP_ADD there are two branches to follow, so we only print | |
780 | the variable name if we get an exact match. | |
781 | ||
782 | The name is returned as a mortal SV. | |
783 | ||
784 | Assumes that PL_op is the op that originally triggered the error, and that | |
785 | PL_comppad/PL_curpad points to the currently executing pad. | |
786 | ||
787 | =cut | |
788 | */ | |
789 | ||
790 | STATIC SV * | |
791 | S_find_uninit_var(pTHX_ OP* obase, SV* uninit_sv, bool match) | |
792 | { | |
793 | SV *sv; | |
794 | AV *av; | |
795 | SV **svp; | |
796 | GV *gv; | |
797 | OP *o, *o2, *kid; | |
798 | ||
799 | if (!obase || (match && (!uninit_sv || uninit_sv == &PL_sv_undef || | |
800 | uninit_sv == &PL_sv_placeholder))) | |
801 | return Nullsv; | |
802 | ||
803 | switch (obase->op_type) { | |
804 | ||
805 | case OP_RV2AV: | |
806 | case OP_RV2HV: | |
807 | case OP_PADAV: | |
808 | case OP_PADHV: | |
809 | { | |
810 | bool pad = (obase->op_type == OP_PADAV || obase->op_type == OP_PADHV); | |
811 | bool hash = (obase->op_type == OP_PADHV || obase->op_type == OP_RV2HV); | |
112dcc46 RGS |
812 | I32 index = 0; |
813 | SV *keysv = Nullsv; | |
29489e7c DM |
814 | int subscript_type = FUV_SUBSCRIPT_WITHIN; |
815 | ||
816 | if (pad) { /* @lex, %lex */ | |
817 | sv = PAD_SVl(obase->op_targ); | |
818 | gv = Nullgv; | |
819 | } | |
820 | else { | |
821 | if (cUNOPx(obase)->op_first->op_type == OP_GV) { | |
822 | /* @global, %global */ | |
823 | gv = cGVOPx_gv(cUNOPx(obase)->op_first); | |
824 | if (!gv) | |
825 | break; | |
826 | sv = hash ? (SV*)GvHV(gv): (SV*)GvAV(gv); | |
827 | } | |
828 | else /* @{expr}, %{expr} */ | |
829 | return find_uninit_var(cUNOPx(obase)->op_first, | |
830 | uninit_sv, match); | |
831 | } | |
832 | ||
833 | /* attempt to find a match within the aggregate */ | |
834 | if (hash) { | |
835 | keysv = S_find_hash_subscript(aTHX_ (HV*)sv, uninit_sv); | |
836 | if (keysv) | |
837 | subscript_type = FUV_SUBSCRIPT_HASH; | |
838 | } | |
839 | else { | |
840 | index = S_find_array_subscript(aTHX_ (AV*)sv, uninit_sv); | |
841 | if (index >= 0) | |
842 | subscript_type = FUV_SUBSCRIPT_ARRAY; | |
843 | } | |
844 | ||
845 | if (match && subscript_type == FUV_SUBSCRIPT_WITHIN) | |
846 | break; | |
847 | ||
848 | return S_varname(aTHX_ gv, hash ? "%" : "@", obase->op_targ, | |
849 | keysv, index, subscript_type); | |
850 | } | |
851 | ||
852 | case OP_PADSV: | |
853 | if (match && PAD_SVl(obase->op_targ) != uninit_sv) | |
854 | break; | |
855 | return S_varname(aTHX_ Nullgv, "$", obase->op_targ, | |
856 | Nullsv, 0, FUV_SUBSCRIPT_NONE); | |
857 | ||
858 | case OP_GVSV: | |
859 | gv = cGVOPx_gv(obase); | |
860 | if (!gv || (match && GvSV(gv) != uninit_sv)) | |
861 | break; | |
862 | return S_varname(aTHX_ gv, "$", 0, Nullsv, 0, FUV_SUBSCRIPT_NONE); | |
863 | ||
864 | case OP_AELEMFAST: | |
865 | if (obase->op_flags & OPf_SPECIAL) { /* lexical array */ | |
866 | if (match) { | |
867 | av = (AV*)PAD_SV(obase->op_targ); | |
868 | if (!av || SvRMAGICAL(av)) | |
869 | break; | |
870 | svp = av_fetch(av, (I32)obase->op_private, FALSE); | |
871 | if (!svp || *svp != uninit_sv) | |
872 | break; | |
873 | } | |
874 | return S_varname(aTHX_ Nullgv, "$", obase->op_targ, | |
875 | Nullsv, (I32)obase->op_private, FUV_SUBSCRIPT_ARRAY); | |
876 | } | |
877 | else { | |
878 | gv = cGVOPx_gv(obase); | |
879 | if (!gv) | |
880 | break; | |
881 | if (match) { | |
882 | av = GvAV(gv); | |
883 | if (!av || SvRMAGICAL(av)) | |
884 | break; | |
885 | svp = av_fetch(av, (I32)obase->op_private, FALSE); | |
886 | if (!svp || *svp != uninit_sv) | |
887 | break; | |
888 | } | |
889 | return S_varname(aTHX_ gv, "$", 0, | |
890 | Nullsv, (I32)obase->op_private, FUV_SUBSCRIPT_ARRAY); | |
891 | } | |
892 | break; | |
893 | ||
894 | case OP_EXISTS: | |
895 | o = cUNOPx(obase)->op_first; | |
896 | if (!o || o->op_type != OP_NULL || | |
897 | ! (o->op_targ == OP_AELEM || o->op_targ == OP_HELEM)) | |
898 | break; | |
899 | return find_uninit_var(cBINOPo->op_last, uninit_sv, match); | |
900 | ||
901 | case OP_AELEM: | |
902 | case OP_HELEM: | |
903 | if (PL_op == obase) | |
904 | /* $a[uninit_expr] or $h{uninit_expr} */ | |
905 | return find_uninit_var(cBINOPx(obase)->op_last, uninit_sv, match); | |
906 | ||
907 | gv = Nullgv; | |
908 | o = cBINOPx(obase)->op_first; | |
909 | kid = cBINOPx(obase)->op_last; | |
910 | ||
911 | /* get the av or hv, and optionally the gv */ | |
912 | sv = Nullsv; | |
913 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) { | |
914 | sv = PAD_SV(o->op_targ); | |
915 | } | |
916 | else if ((o->op_type == OP_RV2AV || o->op_type == OP_RV2HV) | |
917 | && cUNOPo->op_first->op_type == OP_GV) | |
918 | { | |
919 | gv = cGVOPx_gv(cUNOPo->op_first); | |
920 | if (!gv) | |
921 | break; | |
922 | sv = o->op_type == OP_RV2HV ? (SV*)GvHV(gv) : (SV*)GvAV(gv); | |
923 | } | |
924 | if (!sv) | |
925 | break; | |
926 | ||
927 | if (kid && kid->op_type == OP_CONST && SvOK(cSVOPx_sv(kid))) { | |
928 | /* index is constant */ | |
929 | if (match) { | |
930 | if (SvMAGICAL(sv)) | |
931 | break; | |
932 | if (obase->op_type == OP_HELEM) { | |
933 | HE* he = hv_fetch_ent((HV*)sv, cSVOPx_sv(kid), 0, 0); | |
934 | if (!he || HeVAL(he) != uninit_sv) | |
935 | break; | |
936 | } | |
937 | else { | |
938 | svp = av_fetch((AV*)sv, SvIV(cSVOPx_sv(kid)), FALSE); | |
939 | if (!svp || *svp != uninit_sv) | |
940 | break; | |
941 | } | |
942 | } | |
943 | if (obase->op_type == OP_HELEM) | |
944 | return S_varname(aTHX_ gv, "%", o->op_targ, | |
945 | cSVOPx_sv(kid), 0, FUV_SUBSCRIPT_HASH); | |
946 | else | |
947 | return S_varname(aTHX_ gv, "@", o->op_targ, Nullsv, | |
948 | SvIV(cSVOPx_sv(kid)), FUV_SUBSCRIPT_ARRAY); | |
949 | ; | |
950 | } | |
951 | else { | |
952 | /* index is an expression; | |
953 | * attempt to find a match within the aggregate */ | |
954 | if (obase->op_type == OP_HELEM) { | |
955 | SV *keysv = S_find_hash_subscript(aTHX_ (HV*)sv, uninit_sv); | |
956 | if (keysv) | |
957 | return S_varname(aTHX_ gv, "%", o->op_targ, | |
958 | keysv, 0, FUV_SUBSCRIPT_HASH); | |
959 | } | |
960 | else { | |
961 | I32 index = S_find_array_subscript(aTHX_ (AV*)sv, uninit_sv); | |
962 | if (index >= 0) | |
963 | return S_varname(aTHX_ gv, "@", o->op_targ, | |
964 | Nullsv, index, FUV_SUBSCRIPT_ARRAY); | |
965 | } | |
966 | if (match) | |
967 | break; | |
968 | return S_varname(aTHX_ gv, | |
969 | (o->op_type == OP_PADAV || o->op_type == OP_RV2AV) | |
970 | ? "@" : "%", | |
971 | o->op_targ, Nullsv, 0, FUV_SUBSCRIPT_WITHIN); | |
972 | } | |
973 | ||
974 | break; | |
975 | ||
976 | case OP_AASSIGN: | |
977 | /* only examine RHS */ | |
978 | return find_uninit_var(cBINOPx(obase)->op_first, uninit_sv, match); | |
979 | ||
980 | case OP_OPEN: | |
981 | o = cUNOPx(obase)->op_first; | |
982 | if (o->op_type == OP_PUSHMARK) | |
983 | o = o->op_sibling; | |
984 | ||
985 | if (!o->op_sibling) { | |
986 | /* one-arg version of open is highly magical */ | |
987 | ||
988 | if (o->op_type == OP_GV) { /* open FOO; */ | |
989 | gv = cGVOPx_gv(o); | |
990 | if (match && GvSV(gv) != uninit_sv) | |
991 | break; | |
7a5fa8a2 | 992 | return S_varname(aTHX_ gv, "$", 0, |
29489e7c DM |
993 | Nullsv, 0, FUV_SUBSCRIPT_NONE); |
994 | } | |
995 | /* other possibilities not handled are: | |
996 | * open $x; or open my $x; should return '${*$x}' | |
997 | * open expr; should return '$'.expr ideally | |
998 | */ | |
999 | break; | |
1000 | } | |
1001 | goto do_op; | |
1002 | ||
1003 | /* ops where $_ may be an implicit arg */ | |
1004 | case OP_TRANS: | |
1005 | case OP_SUBST: | |
1006 | case OP_MATCH: | |
1007 | if ( !(obase->op_flags & OPf_STACKED)) { | |
1008 | if (uninit_sv == ((obase->op_private & OPpTARGET_MY) | |
1009 | ? PAD_SVl(obase->op_targ) | |
1010 | : DEFSV)) | |
1011 | { | |
1012 | sv = sv_newmortal(); | |
1013 | sv_setpv(sv, "$_"); | |
1014 | return sv; | |
1015 | } | |
1016 | } | |
1017 | goto do_op; | |
1018 | ||
1019 | case OP_PRTF: | |
1020 | case OP_PRINT: | |
1021 | /* skip filehandle as it can't produce 'undef' warning */ | |
1022 | o = cUNOPx(obase)->op_first; | |
1023 | if ((obase->op_flags & OPf_STACKED) && o->op_type == OP_PUSHMARK) | |
1024 | o = o->op_sibling->op_sibling; | |
1025 | goto do_op2; | |
1026 | ||
1027 | ||
e21bd382 | 1028 | case OP_RV2SV: |
29489e7c DM |
1029 | case OP_CUSTOM: |
1030 | case OP_ENTERSUB: | |
1031 | match = 1; /* XS or custom code could trigger random warnings */ | |
1032 | goto do_op; | |
1033 | ||
1034 | case OP_SCHOMP: | |
1035 | case OP_CHOMP: | |
1036 | if (SvROK(PL_rs) && uninit_sv == SvRV(PL_rs)) | |
1037 | return sv_2mortal(newSVpv("${$/}", 0)); | |
1038 | /* FALL THROUGH */ | |
1039 | ||
1040 | default: | |
1041 | do_op: | |
1042 | if (!(obase->op_flags & OPf_KIDS)) | |
1043 | break; | |
1044 | o = cUNOPx(obase)->op_first; | |
1045 | ||
1046 | do_op2: | |
1047 | if (!o) | |
1048 | break; | |
1049 | ||
1050 | /* if all except one arg are constant, or have no side-effects, | |
1051 | * or are optimized away, then it's unambiguous */ | |
1052 | o2 = Nullop; | |
1053 | for (kid=o; kid; kid = kid->op_sibling) { | |
1054 | if (kid && | |
1055 | ( (kid->op_type == OP_CONST && SvOK(cSVOPx_sv(kid))) | |
1056 | || (kid->op_type == OP_NULL && ! (kid->op_flags & OPf_KIDS)) | |
1057 | || (kid->op_type == OP_PUSHMARK) | |
1058 | ) | |
1059 | ) | |
1060 | continue; | |
1061 | if (o2) { /* more than one found */ | |
1062 | o2 = Nullop; | |
1063 | break; | |
1064 | } | |
1065 | o2 = kid; | |
1066 | } | |
1067 | if (o2) | |
1068 | return find_uninit_var(o2, uninit_sv, match); | |
1069 | ||
1070 | /* scan all args */ | |
1071 | while (o) { | |
1072 | sv = find_uninit_var(o, uninit_sv, 1); | |
1073 | if (sv) | |
1074 | return sv; | |
1075 | o = o->op_sibling; | |
1076 | } | |
1077 | break; | |
1078 | } | |
1079 | return Nullsv; | |
1080 | } | |
1081 | ||
1082 | ||
645c22ef DM |
1083 | /* |
1084 | =for apidoc report_uninit | |
1085 | ||
1086 | Print appropriate "Use of uninitialized variable" warning | |
1087 | ||
1088 | =cut | |
1089 | */ | |
1090 | ||
1d7c1841 | 1091 | void |
29489e7c DM |
1092 | Perl_report_uninit(pTHX_ SV* uninit_sv) |
1093 | { | |
1094 | if (PL_op) { | |
112dcc46 | 1095 | SV* varname = Nullsv; |
29489e7c DM |
1096 | if (uninit_sv) { |
1097 | varname = find_uninit_var(PL_op, uninit_sv,0); | |
1098 | if (varname) | |
1099 | sv_insert(varname, 0, 0, " ", 1); | |
1100 | } | |
9014280d | 1101 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, |
29489e7c DM |
1102 | varname ? SvPV_nolen(varname) : "", |
1103 | " in ", OP_DESC(PL_op)); | |
1104 | } | |
1d7c1841 | 1105 | else |
29489e7c DM |
1106 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, |
1107 | "", "", ""); | |
1d7c1841 GS |
1108 | } |
1109 | ||
645c22ef DM |
1110 | /* grab a new IV body from the free list, allocating more if necessary */ |
1111 | ||
76e3520e | 1112 | STATIC XPVIV* |
cea2e8a9 | 1113 | S_new_xiv(pTHX) |
463ee0b2 | 1114 | { |
ea7c11a3 | 1115 | IV* xiv; |
cbe51380 GS |
1116 | LOCK_SV_MUTEX; |
1117 | if (!PL_xiv_root) | |
1118 | more_xiv(); | |
1119 | xiv = PL_xiv_root; | |
1120 | /* | |
1121 | * See comment in more_xiv() -- RAM. | |
1122 | */ | |
1123 | PL_xiv_root = *(IV**)xiv; | |
1124 | UNLOCK_SV_MUTEX; | |
1125 | return (XPVIV*)((char*)xiv - STRUCT_OFFSET(XPVIV, xiv_iv)); | |
463ee0b2 LW |
1126 | } |
1127 | ||
645c22ef DM |
1128 | /* return an IV body to the free list */ |
1129 | ||
76e3520e | 1130 | STATIC void |
cea2e8a9 | 1131 | S_del_xiv(pTHX_ XPVIV *p) |
463ee0b2 | 1132 | { |
23e6a22f | 1133 | IV* xiv = (IV*)((char*)(p) + STRUCT_OFFSET(XPVIV, xiv_iv)); |
cbe51380 | 1134 | LOCK_SV_MUTEX; |
3280af22 NIS |
1135 | *(IV**)xiv = PL_xiv_root; |
1136 | PL_xiv_root = xiv; | |
cbe51380 | 1137 | UNLOCK_SV_MUTEX; |
463ee0b2 LW |
1138 | } |
1139 | ||
645c22ef DM |
1140 | /* allocate another arena's worth of IV bodies */ |
1141 | ||
cbe51380 | 1142 | STATIC void |
cea2e8a9 | 1143 | S_more_xiv(pTHX) |
463ee0b2 | 1144 | { |
ea7c11a3 SM |
1145 | register IV* xiv; |
1146 | register IV* xivend; | |
8c52afec IZ |
1147 | XPV* ptr; |
1148 | New(705, ptr, 1008/sizeof(XPV), XPV); | |
645c22ef | 1149 | ptr->xpv_pv = (char*)PL_xiv_arenaroot; /* linked list of xiv arenas */ |
3280af22 | 1150 | PL_xiv_arenaroot = ptr; /* to keep Purify happy */ |
a0d0e21e | 1151 | |
ea7c11a3 SM |
1152 | xiv = (IV*) ptr; |
1153 | xivend = &xiv[1008 / sizeof(IV) - 1]; | |
645c22ef | 1154 | xiv += (sizeof(XPV) - 1) / sizeof(IV) + 1; /* fudge by size of XPV */ |
3280af22 | 1155 | PL_xiv_root = xiv; |
463ee0b2 | 1156 | while (xiv < xivend) { |
ea7c11a3 | 1157 | *(IV**)xiv = (IV *)(xiv + 1); |
463ee0b2 LW |
1158 | xiv++; |
1159 | } | |
ea7c11a3 | 1160 | *(IV**)xiv = 0; |
463ee0b2 LW |
1161 | } |
1162 | ||
645c22ef DM |
1163 | /* grab a new NV body from the free list, allocating more if necessary */ |
1164 | ||
76e3520e | 1165 | STATIC XPVNV* |
cea2e8a9 | 1166 | S_new_xnv(pTHX) |
463ee0b2 | 1167 | { |
65202027 | 1168 | NV* xnv; |
cbe51380 GS |
1169 | LOCK_SV_MUTEX; |
1170 | if (!PL_xnv_root) | |
1171 | more_xnv(); | |
1172 | xnv = PL_xnv_root; | |
65202027 | 1173 | PL_xnv_root = *(NV**)xnv; |
cbe51380 GS |
1174 | UNLOCK_SV_MUTEX; |
1175 | return (XPVNV*)((char*)xnv - STRUCT_OFFSET(XPVNV, xnv_nv)); | |
463ee0b2 LW |
1176 | } |
1177 | ||
645c22ef DM |
1178 | /* return an NV body to the free list */ |
1179 | ||
76e3520e | 1180 | STATIC void |
cea2e8a9 | 1181 | S_del_xnv(pTHX_ XPVNV *p) |
463ee0b2 | 1182 | { |
65202027 | 1183 | NV* xnv = (NV*)((char*)(p) + STRUCT_OFFSET(XPVNV, xnv_nv)); |
cbe51380 | 1184 | LOCK_SV_MUTEX; |
65202027 | 1185 | *(NV**)xnv = PL_xnv_root; |
3280af22 | 1186 | PL_xnv_root = xnv; |
cbe51380 | 1187 | UNLOCK_SV_MUTEX; |
463ee0b2 LW |
1188 | } |
1189 | ||
645c22ef DM |
1190 | /* allocate another arena's worth of NV bodies */ |
1191 | ||
cbe51380 | 1192 | STATIC void |
cea2e8a9 | 1193 | S_more_xnv(pTHX) |
463ee0b2 | 1194 | { |
65202027 DS |
1195 | register NV* xnv; |
1196 | register NV* xnvend; | |
612f20c3 GS |
1197 | XPV *ptr; |
1198 | New(711, ptr, 1008/sizeof(XPV), XPV); | |
1199 | ptr->xpv_pv = (char*)PL_xnv_arenaroot; | |
1200 | PL_xnv_arenaroot = ptr; | |
1201 | ||
1202 | xnv = (NV*) ptr; | |
65202027 DS |
1203 | xnvend = &xnv[1008 / sizeof(NV) - 1]; |
1204 | xnv += (sizeof(XPVIV) - 1) / sizeof(NV) + 1; /* fudge by sizeof XPVIV */ | |
3280af22 | 1205 | PL_xnv_root = xnv; |
463ee0b2 | 1206 | while (xnv < xnvend) { |
65202027 | 1207 | *(NV**)xnv = (NV*)(xnv + 1); |
463ee0b2 LW |
1208 | xnv++; |
1209 | } | |
65202027 | 1210 | *(NV**)xnv = 0; |
463ee0b2 LW |
1211 | } |
1212 | ||
645c22ef DM |
1213 | /* grab a new struct xrv from the free list, allocating more if necessary */ |
1214 | ||
76e3520e | 1215 | STATIC XRV* |
cea2e8a9 | 1216 | S_new_xrv(pTHX) |
ed6116ce LW |
1217 | { |
1218 | XRV* xrv; | |
cbe51380 GS |
1219 | LOCK_SV_MUTEX; |
1220 | if (!PL_xrv_root) | |
1221 | more_xrv(); | |
1222 | xrv = PL_xrv_root; | |
1223 | PL_xrv_root = (XRV*)xrv->xrv_rv; | |
1224 | UNLOCK_SV_MUTEX; | |
1225 | return xrv; | |
ed6116ce LW |
1226 | } |
1227 | ||
645c22ef DM |
1228 | /* return a struct xrv to the free list */ |
1229 | ||
76e3520e | 1230 | STATIC void |
cea2e8a9 | 1231 | S_del_xrv(pTHX_ XRV *p) |
ed6116ce | 1232 | { |
cbe51380 | 1233 | LOCK_SV_MUTEX; |
3280af22 NIS |
1234 | p->xrv_rv = (SV*)PL_xrv_root; |
1235 | PL_xrv_root = p; | |
cbe51380 | 1236 | UNLOCK_SV_MUTEX; |
ed6116ce LW |
1237 | } |
1238 | ||
645c22ef DM |
1239 | /* allocate another arena's worth of struct xrv */ |
1240 | ||
cbe51380 | 1241 | STATIC void |
cea2e8a9 | 1242 | S_more_xrv(pTHX) |
ed6116ce | 1243 | { |
ed6116ce LW |
1244 | register XRV* xrv; |
1245 | register XRV* xrvend; | |
612f20c3 GS |
1246 | XPV *ptr; |
1247 | New(712, ptr, 1008/sizeof(XPV), XPV); | |
1248 | ptr->xpv_pv = (char*)PL_xrv_arenaroot; | |
1249 | PL_xrv_arenaroot = ptr; | |
1250 | ||
1251 | xrv = (XRV*) ptr; | |
ed6116ce | 1252 | xrvend = &xrv[1008 / sizeof(XRV) - 1]; |
612f20c3 GS |
1253 | xrv += (sizeof(XPV) - 1) / sizeof(XRV) + 1; |
1254 | PL_xrv_root = xrv; | |
ed6116ce LW |
1255 | while (xrv < xrvend) { |
1256 | xrv->xrv_rv = (SV*)(xrv + 1); | |
1257 | xrv++; | |
1258 | } | |
1259 | xrv->xrv_rv = 0; | |
ed6116ce LW |
1260 | } |
1261 | ||
645c22ef DM |
1262 | /* grab a new struct xpv from the free list, allocating more if necessary */ |
1263 | ||
76e3520e | 1264 | STATIC XPV* |
cea2e8a9 | 1265 | S_new_xpv(pTHX) |
463ee0b2 LW |
1266 | { |
1267 | XPV* xpv; | |
cbe51380 GS |
1268 | LOCK_SV_MUTEX; |
1269 | if (!PL_xpv_root) | |
1270 | more_xpv(); | |
1271 | xpv = PL_xpv_root; | |
1272 | PL_xpv_root = (XPV*)xpv->xpv_pv; | |
1273 | UNLOCK_SV_MUTEX; | |
1274 | return xpv; | |
463ee0b2 LW |
1275 | } |
1276 | ||
645c22ef DM |
1277 | /* return a struct xpv to the free list */ |
1278 | ||
76e3520e | 1279 | STATIC void |
cea2e8a9 | 1280 | S_del_xpv(pTHX_ XPV *p) |
463ee0b2 | 1281 | { |
cbe51380 | 1282 | LOCK_SV_MUTEX; |
3280af22 NIS |
1283 | p->xpv_pv = (char*)PL_xpv_root; |
1284 | PL_xpv_root = p; | |
cbe51380 | 1285 | UNLOCK_SV_MUTEX; |
463ee0b2 LW |
1286 | } |
1287 | ||
645c22ef DM |
1288 | /* allocate another arena's worth of struct xpv */ |
1289 | ||
cbe51380 | 1290 | STATIC void |
cea2e8a9 | 1291 | S_more_xpv(pTHX) |
463ee0b2 | 1292 | { |
463ee0b2 LW |
1293 | register XPV* xpv; |
1294 | register XPV* xpvend; | |
612f20c3 GS |
1295 | New(713, xpv, 1008/sizeof(XPV), XPV); |
1296 | xpv->xpv_pv = (char*)PL_xpv_arenaroot; | |
1297 | PL_xpv_arenaroot = xpv; | |
1298 | ||
463ee0b2 | 1299 | xpvend = &xpv[1008 / sizeof(XPV) - 1]; |
612f20c3 | 1300 | PL_xpv_root = ++xpv; |
463ee0b2 LW |
1301 | while (xpv < xpvend) { |
1302 | xpv->xpv_pv = (char*)(xpv + 1); | |
1303 | xpv++; | |
1304 | } | |
1305 | xpv->xpv_pv = 0; | |
463ee0b2 LW |
1306 | } |
1307 | ||
645c22ef DM |
1308 | /* grab a new struct xpviv from the free list, allocating more if necessary */ |
1309 | ||
932e9ff9 VB |
1310 | STATIC XPVIV* |
1311 | S_new_xpviv(pTHX) | |
1312 | { | |
1313 | XPVIV* xpviv; | |
1314 | LOCK_SV_MUTEX; | |
1315 | if (!PL_xpviv_root) | |
1316 | more_xpviv(); | |
1317 | xpviv = PL_xpviv_root; | |
1318 | PL_xpviv_root = (XPVIV*)xpviv->xpv_pv; | |
1319 | UNLOCK_SV_MUTEX; | |
1320 | return xpviv; | |
1321 | } | |
1322 | ||
645c22ef DM |
1323 | /* return a struct xpviv to the free list */ |
1324 | ||
932e9ff9 VB |
1325 | STATIC void |
1326 | S_del_xpviv(pTHX_ XPVIV *p) | |
1327 | { | |
1328 | LOCK_SV_MUTEX; | |
1329 | p->xpv_pv = (char*)PL_xpviv_root; | |
1330 | PL_xpviv_root = p; | |
1331 | UNLOCK_SV_MUTEX; | |
1332 | } | |
1333 | ||
645c22ef DM |
1334 | /* allocate another arena's worth of struct xpviv */ |
1335 | ||
932e9ff9 VB |
1336 | STATIC void |
1337 | S_more_xpviv(pTHX) | |
1338 | { | |
1339 | register XPVIV* xpviv; | |
1340 | register XPVIV* xpvivend; | |
612f20c3 GS |
1341 | New(714, xpviv, 1008/sizeof(XPVIV), XPVIV); |
1342 | xpviv->xpv_pv = (char*)PL_xpviv_arenaroot; | |
1343 | PL_xpviv_arenaroot = xpviv; | |
1344 | ||
932e9ff9 | 1345 | xpvivend = &xpviv[1008 / sizeof(XPVIV) - 1]; |
612f20c3 | 1346 | PL_xpviv_root = ++xpviv; |
932e9ff9 VB |
1347 | while (xpviv < xpvivend) { |
1348 | xpviv->xpv_pv = (char*)(xpviv + 1); | |
1349 | xpviv++; | |
1350 | } | |
1351 | xpviv->xpv_pv = 0; | |
1352 | } | |
1353 | ||
645c22ef DM |
1354 | /* grab a new struct xpvnv from the free list, allocating more if necessary */ |
1355 | ||
932e9ff9 VB |
1356 | STATIC XPVNV* |
1357 | S_new_xpvnv(pTHX) | |
1358 | { | |
1359 | XPVNV* xpvnv; | |
1360 | LOCK_SV_MUTEX; | |
1361 | if (!PL_xpvnv_root) | |
1362 | more_xpvnv(); | |
1363 | xpvnv = PL_xpvnv_root; | |
1364 | PL_xpvnv_root = (XPVNV*)xpvnv->xpv_pv; | |
1365 | UNLOCK_SV_MUTEX; | |
1366 | return xpvnv; | |
1367 | } | |
1368 | ||
645c22ef DM |
1369 | /* return a struct xpvnv to the free list */ |
1370 | ||
932e9ff9 VB |
1371 | STATIC void |
1372 | S_del_xpvnv(pTHX_ XPVNV *p) | |
1373 | { | |
1374 | LOCK_SV_MUTEX; | |
1375 | p->xpv_pv = (char*)PL_xpvnv_root; | |
1376 | PL_xpvnv_root = p; | |
1377 | UNLOCK_SV_MUTEX; | |
1378 | } | |
1379 | ||
645c22ef DM |
1380 | /* allocate another arena's worth of struct xpvnv */ |
1381 | ||
932e9ff9 VB |
1382 | STATIC void |
1383 | S_more_xpvnv(pTHX) | |
1384 | { | |
1385 | register XPVNV* xpvnv; | |
1386 | register XPVNV* xpvnvend; | |
612f20c3 GS |
1387 | New(715, xpvnv, 1008/sizeof(XPVNV), XPVNV); |
1388 | xpvnv->xpv_pv = (char*)PL_xpvnv_arenaroot; | |
1389 | PL_xpvnv_arenaroot = xpvnv; | |
1390 | ||
932e9ff9 | 1391 | xpvnvend = &xpvnv[1008 / sizeof(XPVNV) - 1]; |
612f20c3 | 1392 | PL_xpvnv_root = ++xpvnv; |
932e9ff9 VB |
1393 | while (xpvnv < xpvnvend) { |
1394 | xpvnv->xpv_pv = (char*)(xpvnv + 1); | |
1395 | xpvnv++; | |
1396 | } | |
1397 | xpvnv->xpv_pv = 0; | |
1398 | } | |
1399 | ||
645c22ef DM |
1400 | /* grab a new struct xpvcv from the free list, allocating more if necessary */ |
1401 | ||
932e9ff9 VB |
1402 | STATIC XPVCV* |
1403 | S_new_xpvcv(pTHX) | |
1404 | { | |
1405 | XPVCV* xpvcv; | |
1406 | LOCK_SV_MUTEX; | |
1407 | if (!PL_xpvcv_root) | |
1408 | more_xpvcv(); | |
1409 | xpvcv = PL_xpvcv_root; | |
1410 | PL_xpvcv_root = (XPVCV*)xpvcv->xpv_pv; | |
1411 | UNLOCK_SV_MUTEX; | |
1412 | return xpvcv; | |
1413 | } | |
1414 | ||
645c22ef DM |
1415 | /* return a struct xpvcv to the free list */ |
1416 | ||
932e9ff9 VB |
1417 | STATIC void |
1418 | S_del_xpvcv(pTHX_ XPVCV *p) | |
1419 | { | |
1420 | LOCK_SV_MUTEX; | |
1421 | p->xpv_pv = (char*)PL_xpvcv_root; | |
1422 | PL_xpvcv_root = p; | |
1423 | UNLOCK_SV_MUTEX; | |
1424 | } | |
1425 | ||
645c22ef DM |
1426 | /* allocate another arena's worth of struct xpvcv */ |
1427 | ||
932e9ff9 VB |
1428 | STATIC void |
1429 | S_more_xpvcv(pTHX) | |
1430 | { | |
1431 | register XPVCV* xpvcv; | |
1432 | register XPVCV* xpvcvend; | |
612f20c3 GS |
1433 | New(716, xpvcv, 1008/sizeof(XPVCV), XPVCV); |
1434 | xpvcv->xpv_pv = (char*)PL_xpvcv_arenaroot; | |
1435 | PL_xpvcv_arenaroot = xpvcv; | |
1436 | ||
932e9ff9 | 1437 | xpvcvend = &xpvcv[1008 / sizeof(XPVCV) - 1]; |
612f20c3 | 1438 | PL_xpvcv_root = ++xpvcv; |
932e9ff9 VB |
1439 | while (xpvcv < xpvcvend) { |
1440 | xpvcv->xpv_pv = (char*)(xpvcv + 1); | |
1441 | xpvcv++; | |
1442 | } | |
1443 | xpvcv->xpv_pv = 0; | |
1444 | } | |
1445 | ||
645c22ef DM |
1446 | /* grab a new struct xpvav from the free list, allocating more if necessary */ |
1447 | ||
932e9ff9 VB |
1448 | STATIC XPVAV* |
1449 | S_new_xpvav(pTHX) | |
1450 | { | |
1451 | XPVAV* xpvav; | |
1452 | LOCK_SV_MUTEX; | |
1453 | if (!PL_xpvav_root) | |
1454 | more_xpvav(); | |
1455 | xpvav = PL_xpvav_root; | |
1456 | PL_xpvav_root = (XPVAV*)xpvav->xav_array; | |
1457 | UNLOCK_SV_MUTEX; | |
1458 | return xpvav; | |
1459 | } | |
1460 | ||
645c22ef DM |
1461 | /* return a struct xpvav to the free list */ |
1462 | ||
932e9ff9 VB |
1463 | STATIC void |
1464 | S_del_xpvav(pTHX_ XPVAV *p) | |
1465 | { | |
1466 | LOCK_SV_MUTEX; | |
1467 | p->xav_array = (char*)PL_xpvav_root; | |
1468 | PL_xpvav_root = p; | |
1469 | UNLOCK_SV_MUTEX; | |
1470 | } | |
1471 | ||
645c22ef DM |
1472 | /* allocate another arena's worth of struct xpvav */ |
1473 | ||
932e9ff9 VB |
1474 | STATIC void |
1475 | S_more_xpvav(pTHX) | |
1476 | { | |
1477 | register XPVAV* xpvav; | |
1478 | register XPVAV* xpvavend; | |
612f20c3 GS |
1479 | New(717, xpvav, 1008/sizeof(XPVAV), XPVAV); |
1480 | xpvav->xav_array = (char*)PL_xpvav_arenaroot; | |
1481 | PL_xpvav_arenaroot = xpvav; | |
1482 | ||
932e9ff9 | 1483 | xpvavend = &xpvav[1008 / sizeof(XPVAV) - 1]; |
612f20c3 | 1484 | PL_xpvav_root = ++xpvav; |
932e9ff9 VB |
1485 | while (xpvav < xpvavend) { |
1486 | xpvav->xav_array = (char*)(xpvav + 1); | |
1487 | xpvav++; | |
1488 | } | |
1489 | xpvav->xav_array = 0; | |
1490 | } | |
1491 | ||
645c22ef DM |
1492 | /* grab a new struct xpvhv from the free list, allocating more if necessary */ |
1493 | ||
932e9ff9 VB |
1494 | STATIC XPVHV* |
1495 | S_new_xpvhv(pTHX) | |
1496 | { | |
1497 | XPVHV* xpvhv; | |
1498 | LOCK_SV_MUTEX; | |
1499 | if (!PL_xpvhv_root) | |
1500 | more_xpvhv(); | |
1501 | xpvhv = PL_xpvhv_root; | |
1502 | PL_xpvhv_root = (XPVHV*)xpvhv->xhv_array; | |
1503 | UNLOCK_SV_MUTEX; | |
1504 | return xpvhv; | |
1505 | } | |
1506 | ||
645c22ef DM |
1507 | /* return a struct xpvhv to the free list */ |
1508 | ||
932e9ff9 VB |
1509 | STATIC void |
1510 | S_del_xpvhv(pTHX_ XPVHV *p) | |
1511 | { | |
1512 | LOCK_SV_MUTEX; | |
1513 | p->xhv_array = (char*)PL_xpvhv_root; | |
1514 | PL_xpvhv_root = p; | |
1515 | UNLOCK_SV_MUTEX; | |
1516 | } | |
1517 | ||
645c22ef DM |
1518 | /* allocate another arena's worth of struct xpvhv */ |
1519 | ||
932e9ff9 VB |
1520 | STATIC void |
1521 | S_more_xpvhv(pTHX) | |
1522 | { | |
1523 | register XPVHV* xpvhv; | |
1524 | register XPVHV* xpvhvend; | |
612f20c3 GS |
1525 | New(718, xpvhv, 1008/sizeof(XPVHV), XPVHV); |
1526 | xpvhv->xhv_array = (char*)PL_xpvhv_arenaroot; | |
1527 | PL_xpvhv_arenaroot = xpvhv; | |
1528 | ||
932e9ff9 | 1529 | xpvhvend = &xpvhv[1008 / sizeof(XPVHV) - 1]; |
612f20c3 | 1530 | PL_xpvhv_root = ++xpvhv; |
932e9ff9 VB |
1531 | while (xpvhv < xpvhvend) { |
1532 | xpvhv->xhv_array = (char*)(xpvhv + 1); | |
1533 | xpvhv++; | |
1534 | } | |
1535 | xpvhv->xhv_array = 0; | |
1536 | } | |
1537 | ||
645c22ef DM |
1538 | /* grab a new struct xpvmg from the free list, allocating more if necessary */ |
1539 | ||
932e9ff9 VB |
1540 | STATIC XPVMG* |
1541 | S_new_xpvmg(pTHX) | |
1542 | { | |
1543 | XPVMG* xpvmg; | |
1544 | LOCK_SV_MUTEX; | |
1545 | if (!PL_xpvmg_root) | |
1546 | more_xpvmg(); | |
1547 | xpvmg = PL_xpvmg_root; | |
1548 | PL_xpvmg_root = (XPVMG*)xpvmg->xpv_pv; | |
1549 | UNLOCK_SV_MUTEX; | |
1550 | return xpvmg; | |
1551 | } | |
1552 | ||
645c22ef DM |
1553 | /* return a struct xpvmg to the free list */ |
1554 | ||
932e9ff9 VB |
1555 | STATIC void |
1556 | S_del_xpvmg(pTHX_ XPVMG *p) | |
1557 | { | |
1558 | LOCK_SV_MUTEX; | |
1559 | p->xpv_pv = (char*)PL_xpvmg_root; | |
1560 | PL_xpvmg_root = p; | |
1561 | UNLOCK_SV_MUTEX; | |
1562 | } | |
1563 | ||
645c22ef DM |
1564 | /* allocate another arena's worth of struct xpvmg */ |
1565 | ||
932e9ff9 VB |
1566 | STATIC void |
1567 | S_more_xpvmg(pTHX) | |
1568 | { | |
1569 | register XPVMG* xpvmg; | |
1570 | register XPVMG* xpvmgend; | |
612f20c3 GS |
1571 | New(719, xpvmg, 1008/sizeof(XPVMG), XPVMG); |
1572 | xpvmg->xpv_pv = (char*)PL_xpvmg_arenaroot; | |
1573 | PL_xpvmg_arenaroot = xpvmg; | |
1574 | ||
932e9ff9 | 1575 | xpvmgend = &xpvmg[1008 / sizeof(XPVMG) - 1]; |
612f20c3 | 1576 | PL_xpvmg_root = ++xpvmg; |
932e9ff9 VB |
1577 | while (xpvmg < xpvmgend) { |
1578 | xpvmg->xpv_pv = (char*)(xpvmg + 1); | |
1579 | xpvmg++; | |
1580 | } | |
1581 | xpvmg->xpv_pv = 0; | |
1582 | } | |
1583 | ||
645c22ef DM |
1584 | /* grab a new struct xpvlv from the free list, allocating more if necessary */ |
1585 | ||
932e9ff9 VB |
1586 | STATIC XPVLV* |
1587 | S_new_xpvlv(pTHX) | |
1588 | { | |
1589 | XPVLV* xpvlv; | |
1590 | LOCK_SV_MUTEX; | |
1591 | if (!PL_xpvlv_root) | |
1592 | more_xpvlv(); | |
1593 | xpvlv = PL_xpvlv_root; | |
1594 | PL_xpvlv_root = (XPVLV*)xpvlv->xpv_pv; | |
1595 | UNLOCK_SV_MUTEX; | |
1596 | return xpvlv; | |
1597 | } | |
1598 | ||
645c22ef DM |
1599 | /* return a struct xpvlv to the free list */ |
1600 | ||
932e9ff9 VB |
1601 | STATIC void |
1602 | S_del_xpvlv(pTHX_ XPVLV *p) | |
1603 | { | |
1604 | LOCK_SV_MUTEX; | |
1605 | p->xpv_pv = (char*)PL_xpvlv_root; | |
1606 | PL_xpvlv_root = p; | |
1607 | UNLOCK_SV_MUTEX; | |
1608 | } | |
1609 | ||
645c22ef DM |
1610 | /* allocate another arena's worth of struct xpvlv */ |
1611 | ||
932e9ff9 VB |
1612 | STATIC void |
1613 | S_more_xpvlv(pTHX) | |
1614 | { | |
1615 | register XPVLV* xpvlv; | |
1616 | register XPVLV* xpvlvend; | |
612f20c3 GS |
1617 | New(720, xpvlv, 1008/sizeof(XPVLV), XPVLV); |
1618 | xpvlv->xpv_pv = (char*)PL_xpvlv_arenaroot; | |
1619 | PL_xpvlv_arenaroot = xpvlv; | |
1620 | ||
932e9ff9 | 1621 | xpvlvend = &xpvlv[1008 / sizeof(XPVLV) - 1]; |
612f20c3 | 1622 | PL_xpvlv_root = ++xpvlv; |
932e9ff9 VB |
1623 | while (xpvlv < xpvlvend) { |
1624 | xpvlv->xpv_pv = (char*)(xpvlv + 1); | |
1625 | xpvlv++; | |
1626 | } | |
1627 | xpvlv->xpv_pv = 0; | |
1628 | } | |
1629 | ||
645c22ef DM |
1630 | /* grab a new struct xpvbm from the free list, allocating more if necessary */ |
1631 | ||
932e9ff9 VB |
1632 | STATIC XPVBM* |
1633 | S_new_xpvbm(pTHX) | |
1634 | { | |
1635 | XPVBM* xpvbm; | |
1636 | LOCK_SV_MUTEX; | |
1637 | if (!PL_xpvbm_root) | |
1638 | more_xpvbm(); | |
1639 | xpvbm = PL_xpvbm_root; | |
1640 | PL_xpvbm_root = (XPVBM*)xpvbm->xpv_pv; | |
1641 | UNLOCK_SV_MUTEX; | |
1642 | return xpvbm; | |
1643 | } | |
1644 | ||
645c22ef DM |
1645 | /* return a struct xpvbm to the free list */ |
1646 | ||
932e9ff9 VB |
1647 | STATIC void |
1648 | S_del_xpvbm(pTHX_ XPVBM *p) | |
1649 | { | |
1650 | LOCK_SV_MUTEX; | |
1651 | p->xpv_pv = (char*)PL_xpvbm_root; | |
1652 | PL_xpvbm_root = p; | |
1653 | UNLOCK_SV_MUTEX; | |
1654 | } | |
1655 | ||
645c22ef DM |
1656 | /* allocate another arena's worth of struct xpvbm */ |
1657 | ||
932e9ff9 VB |
1658 | STATIC void |
1659 | S_more_xpvbm(pTHX) | |
1660 | { | |
1661 | register XPVBM* xpvbm; | |
1662 | register XPVBM* xpvbmend; | |
612f20c3 GS |
1663 | New(721, xpvbm, 1008/sizeof(XPVBM), XPVBM); |
1664 | xpvbm->xpv_pv = (char*)PL_xpvbm_arenaroot; | |
1665 | PL_xpvbm_arenaroot = xpvbm; | |
1666 | ||
932e9ff9 | 1667 | xpvbmend = &xpvbm[1008 / sizeof(XPVBM) - 1]; |
612f20c3 | 1668 | PL_xpvbm_root = ++xpvbm; |
932e9ff9 VB |
1669 | while (xpvbm < xpvbmend) { |
1670 | xpvbm->xpv_pv = (char*)(xpvbm + 1); | |
1671 | xpvbm++; | |
1672 | } | |
1673 | xpvbm->xpv_pv = 0; | |
1674 | } | |
1675 | ||
7bab3ede MB |
1676 | #define my_safemalloc(s) (void*)safemalloc(s) |
1677 | #define my_safefree(p) safefree((char*)p) | |
463ee0b2 | 1678 | |
d33b2eba | 1679 | #ifdef PURIFY |
463ee0b2 | 1680 | |
d33b2eba GS |
1681 | #define new_XIV() my_safemalloc(sizeof(XPVIV)) |
1682 | #define del_XIV(p) my_safefree(p) | |
ed6116ce | 1683 | |
d33b2eba GS |
1684 | #define new_XNV() my_safemalloc(sizeof(XPVNV)) |
1685 | #define del_XNV(p) my_safefree(p) | |
463ee0b2 | 1686 | |
d33b2eba GS |
1687 | #define new_XRV() my_safemalloc(sizeof(XRV)) |
1688 | #define del_XRV(p) my_safefree(p) | |
8c52afec | 1689 | |
d33b2eba GS |
1690 | #define new_XPV() my_safemalloc(sizeof(XPV)) |
1691 | #define del_XPV(p) my_safefree(p) | |
9b94d1dd | 1692 | |
d33b2eba GS |
1693 | #define new_XPVIV() my_safemalloc(sizeof(XPVIV)) |
1694 | #define del_XPVIV(p) my_safefree(p) | |
932e9ff9 | 1695 | |
d33b2eba GS |
1696 | #define new_XPVNV() my_safemalloc(sizeof(XPVNV)) |
1697 | #define del_XPVNV(p) my_safefree(p) | |
932e9ff9 | 1698 | |
d33b2eba GS |
1699 | #define new_XPVCV() my_safemalloc(sizeof(XPVCV)) |
1700 | #define del_XPVCV(p) my_safefree(p) | |
932e9ff9 | 1701 | |
d33b2eba GS |
1702 | #define new_XPVAV() my_safemalloc(sizeof(XPVAV)) |
1703 | #define del_XPVAV(p) my_safefree(p) | |
1704 | ||
1705 | #define new_XPVHV() my_safemalloc(sizeof(XPVHV)) | |
1706 | #define del_XPVHV(p) my_safefree(p) | |
1c846c1f | 1707 | |
d33b2eba GS |
1708 | #define new_XPVMG() my_safemalloc(sizeof(XPVMG)) |
1709 | #define del_XPVMG(p) my_safefree(p) | |
1710 | ||
1711 | #define new_XPVLV() my_safemalloc(sizeof(XPVLV)) | |
1712 | #define del_XPVLV(p) my_safefree(p) | |
1713 | ||
1714 | #define new_XPVBM() my_safemalloc(sizeof(XPVBM)) | |
1715 | #define del_XPVBM(p) my_safefree(p) | |
1716 | ||
1717 | #else /* !PURIFY */ | |
1718 | ||
1719 | #define new_XIV() (void*)new_xiv() | |
1720 | #define del_XIV(p) del_xiv((XPVIV*) p) | |
1721 | ||
1722 | #define new_XNV() (void*)new_xnv() | |
1723 | #define del_XNV(p) del_xnv((XPVNV*) p) | |
9b94d1dd | 1724 | |
d33b2eba GS |
1725 | #define new_XRV() (void*)new_xrv() |
1726 | #define del_XRV(p) del_xrv((XRV*) p) | |
9b94d1dd | 1727 | |
d33b2eba GS |
1728 | #define new_XPV() (void*)new_xpv() |
1729 | #define del_XPV(p) del_xpv((XPV *)p) | |
1730 | ||
1731 | #define new_XPVIV() (void*)new_xpviv() | |
1732 | #define del_XPVIV(p) del_xpviv((XPVIV *)p) | |
1733 | ||
1734 | #define new_XPVNV() (void*)new_xpvnv() | |
1735 | #define del_XPVNV(p) del_xpvnv((XPVNV *)p) | |
1736 | ||
1737 | #define new_XPVCV() (void*)new_xpvcv() | |
1738 | #define del_XPVCV(p) del_xpvcv((XPVCV *)p) | |
1739 | ||
1740 | #define new_XPVAV() (void*)new_xpvav() | |
1741 | #define del_XPVAV(p) del_xpvav((XPVAV *)p) | |
1742 | ||
1743 | #define new_XPVHV() (void*)new_xpvhv() | |
1744 | #define del_XPVHV(p) del_xpvhv((XPVHV *)p) | |
1c846c1f | 1745 | |
d33b2eba GS |
1746 | #define new_XPVMG() (void*)new_xpvmg() |
1747 | #define del_XPVMG(p) del_xpvmg((XPVMG *)p) | |
1748 | ||
1749 | #define new_XPVLV() (void*)new_xpvlv() | |
1750 | #define del_XPVLV(p) del_xpvlv((XPVLV *)p) | |
1751 | ||
1752 | #define new_XPVBM() (void*)new_xpvbm() | |
1753 | #define del_XPVBM(p) del_xpvbm((XPVBM *)p) | |
1754 | ||
1755 | #endif /* PURIFY */ | |
9b94d1dd | 1756 | |
d33b2eba GS |
1757 | #define new_XPVGV() my_safemalloc(sizeof(XPVGV)) |
1758 | #define del_XPVGV(p) my_safefree(p) | |
1c846c1f | 1759 | |
d33b2eba GS |
1760 | #define new_XPVFM() my_safemalloc(sizeof(XPVFM)) |
1761 | #define del_XPVFM(p) my_safefree(p) | |
1c846c1f | 1762 | |
d33b2eba GS |
1763 | #define new_XPVIO() my_safemalloc(sizeof(XPVIO)) |
1764 | #define del_XPVIO(p) my_safefree(p) | |
8990e307 | 1765 | |
954c1994 GS |
1766 | /* |
1767 | =for apidoc sv_upgrade | |
1768 | ||
ff276b08 | 1769 | Upgrade an SV to a more complex form. Generally adds a new body type to the |
645c22ef | 1770 | SV, then copies across as much information as possible from the old body. |
ff276b08 | 1771 | You generally want to use the C<SvUPGRADE> macro wrapper. See also C<svtype>. |
954c1994 GS |
1772 | |
1773 | =cut | |
1774 | */ | |
1775 | ||
79072805 | 1776 | bool |
864dbfa3 | 1777 | Perl_sv_upgrade(pTHX_ register SV *sv, U32 mt) |
79072805 | 1778 | { |
e763e3dc | 1779 | |
c04a4dfe JH |
1780 | char* pv = NULL; |
1781 | U32 cur = 0; | |
1782 | U32 len = 0; | |
1783 | IV iv = 0; | |
1784 | NV nv = 0.0; | |
1785 | MAGIC* magic = NULL; | |
1786 | HV* stash = Nullhv; | |
79072805 | 1787 | |
765f542d NC |
1788 | if (mt != SVt_PV && SvIsCOW(sv)) { |
1789 | sv_force_normal_flags(sv, 0); | |
f130fd45 NIS |
1790 | } |
1791 | ||
79072805 LW |
1792 | if (SvTYPE(sv) == mt) |
1793 | return TRUE; | |
1794 | ||
a5f75d66 AD |
1795 | if (mt < SVt_PVIV) |
1796 | (void)SvOOK_off(sv); | |
1797 | ||
79072805 LW |
1798 | switch (SvTYPE(sv)) { |
1799 | case SVt_NULL: | |
1800 | pv = 0; | |
1801 | cur = 0; | |
1802 | len = 0; | |
1803 | iv = 0; | |
1804 | nv = 0.0; | |
1805 | magic = 0; | |
1806 | stash = 0; | |
1807 | break; | |
79072805 LW |
1808 | case SVt_IV: |
1809 | pv = 0; | |
1810 | cur = 0; | |
1811 | len = 0; | |
463ee0b2 | 1812 | iv = SvIVX(sv); |
65202027 | 1813 | nv = (NV)SvIVX(sv); |
79072805 LW |
1814 | del_XIV(SvANY(sv)); |
1815 | magic = 0; | |
1816 | stash = 0; | |
ed6116ce | 1817 | if (mt == SVt_NV) |
463ee0b2 | 1818 | mt = SVt_PVNV; |
ed6116ce LW |
1819 | else if (mt < SVt_PVIV) |
1820 | mt = SVt_PVIV; | |
79072805 LW |
1821 | break; |
1822 | case SVt_NV: | |
1823 | pv = 0; | |
1824 | cur = 0; | |
1825 | len = 0; | |
463ee0b2 | 1826 | nv = SvNVX(sv); |
1bd302c3 | 1827 | iv = I_V(nv); |
79072805 LW |
1828 | magic = 0; |
1829 | stash = 0; | |
1830 | del_XNV(SvANY(sv)); | |
1831 | SvANY(sv) = 0; | |
ed6116ce | 1832 | if (mt < SVt_PVNV) |
79072805 LW |
1833 | mt = SVt_PVNV; |
1834 | break; | |
ed6116ce LW |
1835 | case SVt_RV: |
1836 | pv = (char*)SvRV(sv); | |
1837 | cur = 0; | |
1838 | len = 0; | |
56431972 RB |
1839 | iv = PTR2IV(pv); |
1840 | nv = PTR2NV(pv); | |
ed6116ce LW |
1841 | del_XRV(SvANY(sv)); |
1842 | magic = 0; | |
1843 | stash = 0; | |
1844 | break; | |
79072805 | 1845 | case SVt_PV: |
463ee0b2 | 1846 | pv = SvPVX(sv); |
79072805 LW |
1847 | cur = SvCUR(sv); |
1848 | len = SvLEN(sv); | |
1849 | iv = 0; | |
1850 | nv = 0.0; | |
1851 | magic = 0; | |
1852 | stash = 0; | |
1853 | del_XPV(SvANY(sv)); | |
748a9306 LW |
1854 | if (mt <= SVt_IV) |
1855 | mt = SVt_PVIV; | |
1856 | else if (mt == SVt_NV) | |
1857 | mt = SVt_PVNV; | |
79072805 LW |
1858 | break; |
1859 | case SVt_PVIV: | |
463ee0b2 | 1860 | pv = SvPVX(sv); |
79072805 LW |
1861 | cur = SvCUR(sv); |
1862 | len = SvLEN(sv); | |
463ee0b2 | 1863 | iv = SvIVX(sv); |
79072805 LW |
1864 | nv = 0.0; |
1865 | magic = 0; | |
1866 | stash = 0; | |
1867 | del_XPVIV(SvANY(sv)); | |
1868 | break; | |
1869 | case SVt_PVNV: | |
463ee0b2 | 1870 | pv = SvPVX(sv); |
79072805 LW |
1871 | cur = SvCUR(sv); |
1872 | len = SvLEN(sv); | |
463ee0b2 LW |
1873 | iv = SvIVX(sv); |
1874 | nv = SvNVX(sv); | |
79072805 LW |
1875 | magic = 0; |
1876 | stash = 0; | |
1877 | del_XPVNV(SvANY(sv)); | |
1878 | break; | |
1879 | case SVt_PVMG: | |
463ee0b2 | 1880 | pv = SvPVX(sv); |
79072805 LW |
1881 | cur = SvCUR(sv); |
1882 | len = SvLEN(sv); | |
463ee0b2 LW |
1883 | iv = SvIVX(sv); |
1884 | nv = SvNVX(sv); | |
79072805 LW |
1885 | magic = SvMAGIC(sv); |
1886 | stash = SvSTASH(sv); | |
1887 | del_XPVMG(SvANY(sv)); | |
1888 | break; | |
1889 | default: | |
cea2e8a9 | 1890 | Perl_croak(aTHX_ "Can't upgrade that kind of scalar"); |
79072805 LW |
1891 | } |
1892 | ||
ffb05e06 NC |
1893 | SvFLAGS(sv) &= ~SVTYPEMASK; |
1894 | SvFLAGS(sv) |= mt; | |
1895 | ||
79072805 LW |
1896 | switch (mt) { |
1897 | case SVt_NULL: | |
cea2e8a9 | 1898 | Perl_croak(aTHX_ "Can't upgrade to undef"); |
79072805 LW |
1899 | case SVt_IV: |
1900 | SvANY(sv) = new_XIV(); | |
463ee0b2 | 1901 | SvIVX(sv) = iv; |
79072805 LW |
1902 | break; |
1903 | case SVt_NV: | |
1904 | SvANY(sv) = new_XNV(); | |
463ee0b2 | 1905 | SvNVX(sv) = nv; |
79072805 | 1906 | break; |
ed6116ce LW |
1907 | case SVt_RV: |
1908 | SvANY(sv) = new_XRV(); | |
1909 | SvRV(sv) = (SV*)pv; | |
ed6116ce | 1910 | break; |
79072805 LW |
1911 | case SVt_PV: |
1912 | SvANY(sv) = new_XPV(); | |
463ee0b2 | 1913 | SvPVX(sv) = pv; |
79072805 LW |
1914 | SvCUR(sv) = cur; |
1915 | SvLEN(sv) = len; | |
1916 | break; | |
1917 | case SVt_PVIV: | |
1918 | SvANY(sv) = new_XPVIV(); | |
463ee0b2 | 1919 | SvPVX(sv) = pv; |
79072805 LW |
1920 | SvCUR(sv) = cur; |
1921 | SvLEN(sv) = len; | |
463ee0b2 | 1922 | SvIVX(sv) = iv; |
79072805 | 1923 | if (SvNIOK(sv)) |
a0d0e21e | 1924 | (void)SvIOK_on(sv); |
79072805 LW |
1925 | SvNOK_off(sv); |
1926 | break; | |
1927 | case SVt_PVNV: | |
1928 | SvANY(sv) = new_XPVNV(); | |
463ee0b2 | 1929 | SvPVX(sv) = pv; |
79072805 LW |
1930 | SvCUR(sv) = cur; |
1931 | SvLEN(sv) = len; | |
463ee0b2 LW |
1932 | SvIVX(sv) = iv; |
1933 | SvNVX(sv) = nv; | |
79072805 LW |
1934 | break; |
1935 | case SVt_PVMG: | |
1936 | SvANY(sv) = new_XPVMG(); | |
463ee0b2 | 1937 | SvPVX(sv) = pv; |
79072805 LW |
1938 | SvCUR(sv) = cur; |
1939 | SvLEN(sv) = len; | |
463ee0b2 LW |
1940 | SvIVX(sv) = iv; |
1941 | SvNVX(sv) = nv; | |
79072805 LW |
1942 | SvMAGIC(sv) = magic; |
1943 | SvSTASH(sv) = stash; | |
1944 | break; | |
1945 | case SVt_PVLV: | |
1946 | SvANY(sv) = new_XPVLV(); | |
463ee0b2 | 1947 | SvPVX(sv) = pv; |
79072805 LW |
1948 | SvCUR(sv) = cur; |
1949 | SvLEN(sv) = len; | |
463ee0b2 LW |
1950 | SvIVX(sv) = iv; |
1951 | SvNVX(sv) = nv; | |
79072805 LW |
1952 | SvMAGIC(sv) = magic; |
1953 | SvSTASH(sv) = stash; | |
1954 | LvTARGOFF(sv) = 0; | |
1955 | LvTARGLEN(sv) = 0; | |
1956 | LvTARG(sv) = 0; | |
1957 | LvTYPE(sv) = 0; | |
b76195c2 DM |
1958 | GvGP(sv) = 0; |
1959 | GvNAME(sv) = 0; | |
1960 | GvNAMELEN(sv) = 0; | |
1961 | GvSTASH(sv) = 0; | |
1962 | GvFLAGS(sv) = 0; | |
79072805 LW |
1963 | break; |
1964 | case SVt_PVAV: | |
1965 | SvANY(sv) = new_XPVAV(); | |
463ee0b2 LW |
1966 | if (pv) |
1967 | Safefree(pv); | |
2304df62 | 1968 | SvPVX(sv) = 0; |
d1bf51dd | 1969 | AvMAX(sv) = -1; |
93965878 | 1970 | AvFILLp(sv) = -1; |
463ee0b2 LW |
1971 | SvIVX(sv) = 0; |
1972 | SvNVX(sv) = 0.0; | |
1973 | SvMAGIC(sv) = magic; | |
1974 | SvSTASH(sv) = stash; | |
1975 | AvALLOC(sv) = 0; | |
79072805 | 1976 | AvARYLEN(sv) = 0; |
e763e3dc | 1977 | AvFLAGS(sv) = AVf_REAL; |
79072805 LW |
1978 | break; |
1979 | case SVt_PVHV: | |
1980 | SvANY(sv) = new_XPVHV(); | |
463ee0b2 LW |
1981 | if (pv) |
1982 | Safefree(pv); | |
1983 | SvPVX(sv) = 0; | |
1984 | HvFILL(sv) = 0; | |
1985 | HvMAX(sv) = 0; | |
8aacddc1 NIS |
1986 | HvTOTALKEYS(sv) = 0; |
1987 | HvPLACEHOLDERS(sv) = 0; | |
79072805 LW |
1988 | SvMAGIC(sv) = magic; |
1989 | SvSTASH(sv) = stash; | |
79072805 LW |
1990 | HvRITER(sv) = 0; |
1991 | HvEITER(sv) = 0; | |
1992 | HvPMROOT(sv) = 0; | |
1993 | HvNAME(sv) = 0; | |
79072805 LW |
1994 | break; |
1995 | case SVt_PVCV: | |
1996 | SvANY(sv) = new_XPVCV(); | |
748a9306 | 1997 | Zero(SvANY(sv), 1, XPVCV); |
463ee0b2 | 1998 | SvPVX(sv) = pv; |
79072805 LW |
1999 | SvCUR(sv) = cur; |
2000 | SvLEN(sv) = len; | |
463ee0b2 LW |
2001 | SvIVX(sv) = iv; |
2002 | SvNVX(sv) = nv; | |
79072805 LW |
2003 | SvMAGIC(sv) = magic; |
2004 | SvSTASH(sv) = stash; | |
79072805 LW |
2005 | break; |
2006 | case SVt_PVGV: | |
2007 | SvANY(sv) = new_XPVGV(); | |
463ee0b2 | 2008 | SvPVX(sv) = pv; |
79072805 LW |
2009 | SvCUR(sv) = cur; |
2010 | SvLEN(sv) = len; | |
463ee0b2 LW |
2011 | SvIVX(sv) = iv; |
2012 | SvNVX(sv) = nv; | |
79072805 LW |
2013 | SvMAGIC(sv) = magic; |
2014 | SvSTASH(sv) = stash; | |
93a17b20 | 2015 | GvGP(sv) = 0; |
79072805 LW |
2016 | GvNAME(sv) = 0; |
2017 | GvNAMELEN(sv) = 0; | |
2018 | GvSTASH(sv) = 0; | |
a5f75d66 | 2019 | GvFLAGS(sv) = 0; |
79072805 LW |
2020 | break; |
2021 | case SVt_PVBM: | |
2022 | SvANY(sv) = new_XPVBM(); | |
463ee0b2 | 2023 | SvPVX(sv) = pv; |
79072805 LW |
2024 | SvCUR(sv) = cur; |
2025 | SvLEN(sv) = len; | |
463ee0b2 LW |
2026 | SvIVX(sv) = iv; |
2027 | SvNVX(sv) = nv; | |
79072805 LW |
2028 | SvMAGIC(sv) = magic; |
2029 | SvSTASH(sv) = stash; | |
2030 | BmRARE(sv) = 0; | |
2031 | BmUSEFUL(sv) = 0; | |
2032 | BmPREVIOUS(sv) = 0; | |
2033 | break; | |
2034 | case SVt_PVFM: | |
2035 | SvANY(sv) = new_XPVFM(); | |
748a9306 | 2036 | Zero(SvANY(sv), 1, XPVFM); |
463ee0b2 | 2037 | SvPVX(sv) = pv; |
79072805 LW |
2038 | SvCUR(sv) = cur; |
2039 | SvLEN(sv) = len; | |
463ee0b2 LW |
2040 | SvIVX(sv) = iv; |
2041 | SvNVX(sv) = nv; | |
79072805 LW |
2042 | SvMAGIC(sv) = magic; |
2043 | SvSTASH(sv) = stash; | |
79072805 | 2044 | break; |
8990e307 LW |
2045 | case SVt_PVIO: |
2046 | SvANY(sv) = new_XPVIO(); | |
748a9306 | 2047 | Zero(SvANY(sv), 1, XPVIO); |
8990e307 LW |
2048 | SvPVX(sv) = pv; |
2049 | SvCUR(sv) = cur; | |
2050 | SvLEN(sv) = len; | |
2051 | SvIVX(sv) = iv; | |
2052 | SvNVX(sv) = nv; | |
2053 | SvMAGIC(sv) = magic; | |
2054 | SvSTASH(sv) = stash; | |
85e6fe83 | 2055 | IoPAGE_LEN(sv) = 60; |
8990e307 LW |
2056 | break; |
2057 | } | |
79072805 LW |
2058 | return TRUE; |
2059 | } | |
2060 | ||
645c22ef DM |
2061 | /* |
2062 | =for apidoc sv_backoff | |
2063 | ||
2064 | Remove any string offset. You should normally use the C<SvOOK_off> macro | |
2065 | wrapper instead. | |
2066 | ||
2067 | =cut | |
2068 | */ | |
2069 | ||
79072805 | 2070 | int |
864dbfa3 | 2071 | Perl_sv_backoff(pTHX_ register SV *sv) |
79072805 LW |
2072 | { |
2073 | assert(SvOOK(sv)); | |
463ee0b2 LW |
2074 | if (SvIVX(sv)) { |
2075 | char *s = SvPVX(sv); | |
2076 | SvLEN(sv) += SvIVX(sv); | |
2077 | SvPVX(sv) -= SvIVX(sv); | |
79072805 | 2078 | SvIV_set(sv, 0); |
463ee0b2 | 2079 | Move(s, SvPVX(sv), SvCUR(sv)+1, char); |
79072805 LW |
2080 | } |
2081 | SvFLAGS(sv) &= ~SVf_OOK; | |
a0d0e21e | 2082 | return 0; |
79072805 LW |
2083 | } |
2084 | ||
954c1994 GS |
2085 | /* |
2086 | =for apidoc sv_grow | |
2087 | ||
645c22ef DM |
2088 | Expands the character buffer in the SV. If necessary, uses C<sv_unref> and |
2089 | upgrades the SV to C<SVt_PV>. Returns a pointer to the character buffer. | |
2090 | Use the C<SvGROW> wrapper instead. | |
954c1994 GS |
2091 | |
2092 | =cut | |
2093 | */ | |
2094 | ||
79072805 | 2095 | char * |
864dbfa3 | 2096 | Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen) |
79072805 LW |
2097 | { |
2098 | register char *s; | |
2099 | ||
55497cff | 2100 | #ifdef HAS_64K_LIMIT |
79072805 | 2101 | if (newlen >= 0x10000) { |
1d7c1841 GS |
2102 | PerlIO_printf(Perl_debug_log, |
2103 | "Allocation too large: %"UVxf"\n", (UV)newlen); | |
79072805 LW |
2104 | my_exit(1); |
2105 | } | |
55497cff | 2106 | #endif /* HAS_64K_LIMIT */ |
a0d0e21e LW |
2107 | if (SvROK(sv)) |
2108 | sv_unref(sv); | |
79072805 LW |
2109 | if (SvTYPE(sv) < SVt_PV) { |
2110 | sv_upgrade(sv, SVt_PV); | |
463ee0b2 | 2111 | s = SvPVX(sv); |
79072805 LW |
2112 | } |
2113 | else if (SvOOK(sv)) { /* pv is offset? */ | |
2114 | sv_backoff(sv); | |
463ee0b2 | 2115 | s = SvPVX(sv); |
79072805 LW |
2116 | if (newlen > SvLEN(sv)) |
2117 | newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */ | |
c6f8c383 GA |
2118 | #ifdef HAS_64K_LIMIT |
2119 | if (newlen >= 0x10000) | |
2120 | newlen = 0xFFFF; | |
2121 | #endif | |
79072805 | 2122 | } |
bc44a8a2 | 2123 | else |
463ee0b2 | 2124 | s = SvPVX(sv); |
54f0641b | 2125 | |
79072805 | 2126 | if (newlen > SvLEN(sv)) { /* need more room? */ |
8d6dde3e | 2127 | if (SvLEN(sv) && s) { |
7bab3ede | 2128 | #ifdef MYMALLOC |
8d6dde3e IZ |
2129 | STRLEN l = malloced_size((void*)SvPVX(sv)); |
2130 | if (newlen <= l) { | |
2131 | SvLEN_set(sv, l); | |
2132 | return s; | |
2133 | } else | |
c70c8a0a | 2134 | #endif |
79072805 | 2135 | Renew(s,newlen,char); |
8d6dde3e | 2136 | } |
bfed75c6 | 2137 | else { |
4e83176d | 2138 | New(703, s, newlen, char); |
40565179 | 2139 | if (SvPVX(sv) && SvCUR(sv)) { |
54f0641b | 2140 | Move(SvPVX(sv), s, (newlen < SvCUR(sv)) ? newlen : SvCUR(sv), char); |
40565179 | 2141 | } |
4e83176d | 2142 | } |
79072805 | 2143 | SvPV_set(sv, s); |
e1ec3a88 | 2144 | SvLEN_set(sv, newlen); |
79072805 LW |
2145 | } |
2146 | return s; | |
2147 | } | |
2148 | ||
954c1994 GS |
2149 | /* |
2150 | =for apidoc sv_setiv | |
2151 | ||
645c22ef DM |
2152 | Copies an integer into the given SV, upgrading first if necessary. |
2153 | Does not handle 'set' magic. See also C<sv_setiv_mg>. | |
954c1994 GS |
2154 | |
2155 | =cut | |
2156 | */ | |
2157 | ||
79072805 | 2158 | void |
864dbfa3 | 2159 | Perl_sv_setiv(pTHX_ register SV *sv, IV i) |
79072805 | 2160 | { |
765f542d | 2161 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 LW |
2162 | switch (SvTYPE(sv)) { |
2163 | case SVt_NULL: | |
79072805 | 2164 | sv_upgrade(sv, SVt_IV); |
463ee0b2 LW |
2165 | break; |
2166 | case SVt_NV: | |
2167 | sv_upgrade(sv, SVt_PVNV); | |
2168 | break; | |
ed6116ce | 2169 | case SVt_RV: |
463ee0b2 | 2170 | case SVt_PV: |
79072805 | 2171 | sv_upgrade(sv, SVt_PVIV); |
463ee0b2 | 2172 | break; |
a0d0e21e LW |
2173 | |
2174 | case SVt_PVGV: | |
a0d0e21e LW |
2175 | case SVt_PVAV: |
2176 | case SVt_PVHV: | |
2177 | case SVt_PVCV: | |
2178 | case SVt_PVFM: | |
2179 | case SVt_PVIO: | |
411caa50 | 2180 | Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0), |
53e06cf0 | 2181 | OP_DESC(PL_op)); |
463ee0b2 | 2182 | } |
a0d0e21e | 2183 | (void)SvIOK_only(sv); /* validate number */ |
a5f75d66 | 2184 | SvIVX(sv) = i; |
463ee0b2 | 2185 | SvTAINT(sv); |
79072805 LW |
2186 | } |
2187 | ||
954c1994 GS |
2188 | /* |
2189 | =for apidoc sv_setiv_mg | |
2190 | ||
2191 | Like C<sv_setiv>, but also handles 'set' magic. | |
2192 | ||
2193 | =cut | |
2194 | */ | |
2195 | ||
79072805 | 2196 | void |
864dbfa3 | 2197 | Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i) |
ef50df4b GS |
2198 | { |
2199 | sv_setiv(sv,i); | |
2200 | SvSETMAGIC(sv); | |
2201 | } | |
2202 | ||
954c1994 GS |
2203 | /* |
2204 | =for apidoc sv_setuv | |
2205 | ||
645c22ef DM |
2206 | Copies an unsigned integer into the given SV, upgrading first if necessary. |
2207 | Does not handle 'set' magic. See also C<sv_setuv_mg>. | |
954c1994 GS |
2208 | |
2209 | =cut | |
2210 | */ | |
2211 | ||
ef50df4b | 2212 | void |
864dbfa3 | 2213 | Perl_sv_setuv(pTHX_ register SV *sv, UV u) |
55497cff | 2214 | { |
55ada374 NC |
2215 | /* With these two if statements: |
2216 | u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865 | |
d460ef45 | 2217 | |
55ada374 NC |
2218 | without |
2219 | u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865 | |
d460ef45 | 2220 | |
55ada374 NC |
2221 | If you wish to remove them, please benchmark to see what the effect is |
2222 | */ | |
28e5dec8 JH |
2223 | if (u <= (UV)IV_MAX) { |
2224 | sv_setiv(sv, (IV)u); | |
2225 | return; | |
2226 | } | |
25da4f38 IZ |
2227 | sv_setiv(sv, 0); |
2228 | SvIsUV_on(sv); | |
2229 | SvUVX(sv) = u; | |
55497cff | 2230 | } |
2231 | ||
954c1994 GS |
2232 | /* |
2233 | =for apidoc sv_setuv_mg | |
2234 | ||
2235 | Like C<sv_setuv>, but also handles 'set' magic. | |
2236 | ||
2237 | =cut | |
2238 | */ | |
2239 | ||
55497cff | 2240 | void |
864dbfa3 | 2241 | Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u) |
ef50df4b | 2242 | { |
55ada374 NC |
2243 | /* With these two if statements: |
2244 | u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865 | |
d460ef45 | 2245 | |
55ada374 NC |
2246 | without |
2247 | u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865 | |
d460ef45 | 2248 | |
55ada374 NC |
2249 | If you wish to remove them, please benchmark to see what the effect is |
2250 | */ | |
28e5dec8 JH |
2251 | if (u <= (UV)IV_MAX) { |
2252 | sv_setiv(sv, (IV)u); | |
2253 | } else { | |
2254 | sv_setiv(sv, 0); | |
2255 | SvIsUV_on(sv); | |
2256 | sv_setuv(sv,u); | |
2257 | } | |
ef50df4b GS |
2258 | SvSETMAGIC(sv); |
2259 | } | |
2260 | ||
954c1994 GS |
2261 | /* |
2262 | =for apidoc sv_setnv | |
2263 | ||
645c22ef DM |
2264 | Copies a double into the given SV, upgrading first if necessary. |
2265 | Does not handle 'set' magic. See also C<sv_setnv_mg>. | |
954c1994 GS |
2266 | |
2267 | =cut | |
2268 | */ | |
2269 | ||
ef50df4b | 2270 | void |
65202027 | 2271 | Perl_sv_setnv(pTHX_ register SV *sv, NV num) |
79072805 | 2272 | { |
765f542d | 2273 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
a0d0e21e LW |
2274 | switch (SvTYPE(sv)) { |
2275 | case SVt_NULL: | |
2276 | case SVt_IV: | |
79072805 | 2277 | sv_upgrade(sv, SVt_NV); |
a0d0e21e | 2278 | break; |
a0d0e21e LW |
2279 | case SVt_RV: |
2280 | case SVt_PV: | |
2281 | case SVt_PVIV: | |
79072805 | 2282 | sv_upgrade(sv, SVt_PVNV); |
a0d0e21e | 2283 | break; |
827b7e14 | 2284 | |
a0d0e21e | 2285 | case SVt_PVGV: |
a0d0e21e LW |
2286 | case SVt_PVAV: |
2287 | case SVt_PVHV: | |
2288 | case SVt_PVCV: | |
2289 | case SVt_PVFM: | |
2290 | case SVt_PVIO: | |
411caa50 | 2291 | Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0), |
53e06cf0 | 2292 | OP_NAME(PL_op)); |
79072805 | 2293 | } |
463ee0b2 | 2294 | SvNVX(sv) = num; |
a0d0e21e | 2295 | (void)SvNOK_only(sv); /* validate number */ |
463ee0b2 | 2296 | SvTAINT(sv); |
79072805 LW |
2297 | } |
2298 | ||
954c1994 GS |
2299 | /* |
2300 | =for apidoc sv_setnv_mg | |
2301 | ||
2302 | Like C<sv_setnv>, but also handles 'set' magic. | |
2303 | ||
2304 | =cut | |
2305 | */ | |
2306 | ||
ef50df4b | 2307 | void |
65202027 | 2308 | Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num) |
ef50df4b GS |
2309 | { |
2310 | sv_setnv(sv,num); | |
2311 | SvSETMAGIC(sv); | |
2312 | } | |
2313 | ||
645c22ef DM |
2314 | /* Print an "isn't numeric" warning, using a cleaned-up, |
2315 | * printable version of the offending string | |
2316 | */ | |
2317 | ||
76e3520e | 2318 | STATIC void |
cea2e8a9 | 2319 | S_not_a_number(pTHX_ SV *sv) |
a0d0e21e | 2320 | { |
94463019 JH |
2321 | SV *dsv; |
2322 | char tmpbuf[64]; | |
2323 | char *pv; | |
2324 | ||
2325 | if (DO_UTF8(sv)) { | |
2326 | dsv = sv_2mortal(newSVpv("", 0)); | |
2327 | pv = sv_uni_display(dsv, sv, 10, 0); | |
2328 | } else { | |
2329 | char *d = tmpbuf; | |
2330 | char *limit = tmpbuf + sizeof(tmpbuf) - 8; | |
2331 | /* each *s can expand to 4 chars + "...\0", | |
2332 | i.e. need room for 8 chars */ | |
ecdeb87c | 2333 | |
94463019 JH |
2334 | char *s, *end; |
2335 | for (s = SvPVX(sv), end = s + SvCUR(sv); s < end && d < limit; s++) { | |
2336 | int ch = *s & 0xFF; | |
2337 | if (ch & 128 && !isPRINT_LC(ch)) { | |
2338 | *d++ = 'M'; | |
2339 | *d++ = '-'; | |
2340 | ch &= 127; | |
2341 | } | |
2342 | if (ch == '\n') { | |
2343 | *d++ = '\\'; | |
2344 | *d++ = 'n'; | |
2345 | } | |
2346 | else if (ch == '\r') { | |
2347 | *d++ = '\\'; | |
2348 | *d++ = 'r'; | |
2349 | } | |
2350 | else if (ch == '\f') { | |
2351 | *d++ = '\\'; | |
2352 | *d++ = 'f'; | |
2353 | } | |
2354 | else if (ch == '\\') { | |
2355 | *d++ = '\\'; | |
2356 | *d++ = '\\'; | |
2357 | } | |
2358 | else if (ch == '\0') { | |
2359 | *d++ = '\\'; | |
2360 | *d++ = '0'; | |
2361 | } | |
2362 | else if (isPRINT_LC(ch)) | |
2363 | *d++ = ch; | |
2364 | else { | |
2365 | *d++ = '^'; | |
2366 | *d++ = toCTRL(ch); | |
2367 | } | |
2368 | } | |
2369 | if (s < end) { | |
2370 | *d++ = '.'; | |
2371 | *d++ = '.'; | |
2372 | *d++ = '.'; | |
2373 | } | |
2374 | *d = '\0'; | |
2375 | pv = tmpbuf; | |
a0d0e21e | 2376 | } |
a0d0e21e | 2377 | |
533c011a | 2378 | if (PL_op) |
9014280d | 2379 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 JH |
2380 | "Argument \"%s\" isn't numeric in %s", pv, |
2381 | OP_DESC(PL_op)); | |
a0d0e21e | 2382 | else |
9014280d | 2383 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 | 2384 | "Argument \"%s\" isn't numeric", pv); |
a0d0e21e LW |
2385 | } |
2386 | ||
c2988b20 NC |
2387 | /* |
2388 | =for apidoc looks_like_number | |
2389 | ||
645c22ef DM |
2390 | Test if the content of an SV looks like a number (or is a number). |
2391 | C<Inf> and C<Infinity> are treated as numbers (so will not issue a | |
2392 | non-numeric warning), even if your atof() doesn't grok them. | |
c2988b20 NC |
2393 | |
2394 | =cut | |
2395 | */ | |
2396 | ||
2397 | I32 | |
2398 | Perl_looks_like_number(pTHX_ SV *sv) | |
2399 | { | |
2400 | register char *sbegin; | |
2401 | STRLEN len; | |
2402 | ||
2403 | if (SvPOK(sv)) { | |
2404 | sbegin = SvPVX(sv); | |
2405 | len = SvCUR(sv); | |
2406 | } | |
2407 | else if (SvPOKp(sv)) | |
2408 | sbegin = SvPV(sv, len); | |
2409 | else | |
e0ab1c0e | 2410 | return SvFLAGS(sv) & (SVf_NOK|SVp_NOK|SVf_IOK|SVp_IOK); |
c2988b20 NC |
2411 | return grok_number(sbegin, len, NULL); |
2412 | } | |
25da4f38 IZ |
2413 | |
2414 | /* Actually, ISO C leaves conversion of UV to IV undefined, but | |
2415 | until proven guilty, assume that things are not that bad... */ | |
2416 | ||
645c22ef DM |
2417 | /* |
2418 | NV_PRESERVES_UV: | |
2419 | ||
2420 | As 64 bit platforms often have an NV that doesn't preserve all bits of | |
28e5dec8 JH |
2421 | an IV (an assumption perl has been based on to date) it becomes necessary |
2422 | to remove the assumption that the NV always carries enough precision to | |
2423 | recreate the IV whenever needed, and that the NV is the canonical form. | |
2424 | Instead, IV/UV and NV need to be given equal rights. So as to not lose | |
645c22ef | 2425 | precision as a side effect of conversion (which would lead to insanity |
28e5dec8 JH |
2426 | and the dragon(s) in t/op/numconvert.t getting very angry) the intent is |
2427 | 1) to distinguish between IV/UV/NV slots that have cached a valid | |
2428 | conversion where precision was lost and IV/UV/NV slots that have a | |
2429 | valid conversion which has lost no precision | |
645c22ef | 2430 | 2) to ensure that if a numeric conversion to one form is requested that |
28e5dec8 JH |
2431 | would lose precision, the precise conversion (or differently |
2432 | imprecise conversion) is also performed and cached, to prevent | |
2433 | requests for different numeric formats on the same SV causing | |
2434 | lossy conversion chains. (lossless conversion chains are perfectly | |
2435 | acceptable (still)) | |
2436 | ||
2437 | ||
2438 | flags are used: | |
2439 | SvIOKp is true if the IV slot contains a valid value | |
2440 | SvIOK is true only if the IV value is accurate (UV if SvIOK_UV true) | |
2441 | SvNOKp is true if the NV slot contains a valid value | |
2442 | SvNOK is true only if the NV value is accurate | |
2443 | ||
2444 | so | |
645c22ef | 2445 | while converting from PV to NV, check to see if converting that NV to an |
28e5dec8 JH |
2446 | IV(or UV) would lose accuracy over a direct conversion from PV to |
2447 | IV(or UV). If it would, cache both conversions, return NV, but mark | |
2448 | SV as IOK NOKp (ie not NOK). | |
2449 | ||
645c22ef | 2450 | While converting from PV to IV, check to see if converting that IV to an |
28e5dec8 JH |
2451 | NV would lose accuracy over a direct conversion from PV to NV. If it |
2452 | would, cache both conversions, flag similarly. | |
2453 | ||
2454 | Before, the SV value "3.2" could become NV=3.2 IV=3 NOK, IOK quite | |
2455 | correctly because if IV & NV were set NV *always* overruled. | |
645c22ef DM |
2456 | Now, "3.2" will become NV=3.2 IV=3 NOK, IOKp, because the flag's meaning |
2457 | changes - now IV and NV together means that the two are interchangeable: | |
28e5dec8 | 2458 | SvIVX == (IV) SvNVX && SvNVX == (NV) SvIVX; |
d460ef45 | 2459 | |
645c22ef DM |
2460 | The benefit of this is that operations such as pp_add know that if |
2461 | SvIOK is true for both left and right operands, then integer addition | |
2462 | can be used instead of floating point (for cases where the result won't | |
2463 | overflow). Before, floating point was always used, which could lead to | |
28e5dec8 JH |
2464 | loss of precision compared with integer addition. |
2465 | ||
2466 | * making IV and NV equal status should make maths accurate on 64 bit | |
2467 | platforms | |
2468 | * may speed up maths somewhat if pp_add and friends start to use | |
645c22ef | 2469 | integers when possible instead of fp. (Hopefully the overhead in |
28e5dec8 JH |
2470 | looking for SvIOK and checking for overflow will not outweigh the |
2471 | fp to integer speedup) | |
2472 | * will slow down integer operations (callers of SvIV) on "inaccurate" | |
2473 | values, as the change from SvIOK to SvIOKp will cause a call into | |
2474 | sv_2iv each time rather than a macro access direct to the IV slot | |
2475 | * should speed up number->string conversion on integers as IV is | |
645c22ef | 2476 | favoured when IV and NV are equally accurate |
28e5dec8 JH |
2477 | |
2478 | #################################################################### | |
645c22ef DM |
2479 | You had better be using SvIOK_notUV if you want an IV for arithmetic: |
2480 | SvIOK is true if (IV or UV), so you might be getting (IV)SvUV. | |
2481 | On the other hand, SvUOK is true iff UV. | |
28e5dec8 JH |
2482 | #################################################################### |
2483 | ||
645c22ef | 2484 | Your mileage will vary depending your CPU's relative fp to integer |
28e5dec8 JH |
2485 | performance ratio. |
2486 | */ | |
2487 | ||
2488 | #ifndef NV_PRESERVES_UV | |
645c22ef DM |
2489 | # define IS_NUMBER_UNDERFLOW_IV 1 |
2490 | # define IS_NUMBER_UNDERFLOW_UV 2 | |
2491 | # define IS_NUMBER_IV_AND_UV 2 | |
2492 | # define IS_NUMBER_OVERFLOW_IV 4 | |
2493 | # define IS_NUMBER_OVERFLOW_UV 5 | |
2494 | ||
2495 | /* sv_2iuv_non_preserve(): private routine for use by sv_2iv() and sv_2uv() */ | |
28e5dec8 JH |
2496 | |
2497 | /* For sv_2nv these three cases are "SvNOK and don't bother casting" */ | |
2498 | STATIC int | |
645c22ef | 2499 | S_sv_2iuv_non_preserve(pTHX_ register SV *sv, I32 numtype) |
28e5dec8 | 2500 | { |
1779d84d | 2501 | 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 |
2502 | if (SvNVX(sv) < (NV)IV_MIN) { |
2503 | (void)SvIOKp_on(sv); | |
2504 | (void)SvNOK_on(sv); | |
2505 | SvIVX(sv) = IV_MIN; | |
2506 | return IS_NUMBER_UNDERFLOW_IV; | |
2507 | } | |
2508 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2509 | (void)SvIOKp_on(sv); | |
2510 | (void)SvNOK_on(sv); | |
2511 | SvIsUV_on(sv); | |
2512 | SvUVX(sv) = UV_MAX; | |
2513 | return IS_NUMBER_OVERFLOW_UV; | |
2514 | } | |
c2988b20 NC |
2515 | (void)SvIOKp_on(sv); |
2516 | (void)SvNOK_on(sv); | |
2517 | /* Can't use strtol etc to convert this string. (See truth table in | |
2518 | sv_2iv */ | |
2519 | if (SvNVX(sv) <= (UV)IV_MAX) { | |
2520 | SvIVX(sv) = I_V(SvNVX(sv)); | |
2521 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { | |
2522 | SvIOK_on(sv); /* Integer is precise. NOK, IOK */ | |
2523 | } else { | |
2524 | /* Integer is imprecise. NOK, IOKp */ | |
2525 | } | |
2526 | return SvNVX(sv) < 0 ? IS_NUMBER_UNDERFLOW_UV : IS_NUMBER_IV_AND_UV; | |
2527 | } | |
2528 | SvIsUV_on(sv); | |
2529 | SvUVX(sv) = U_V(SvNVX(sv)); | |
2530 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
2531 | if (SvUVX(sv) == UV_MAX) { | |
2532 | /* As we know that NVs don't preserve UVs, UV_MAX cannot | |
2533 | possibly be preserved by NV. Hence, it must be overflow. | |
2534 | NOK, IOKp */ | |
2535 | return IS_NUMBER_OVERFLOW_UV; | |
2536 | } | |
2537 | SvIOK_on(sv); /* Integer is precise. NOK, UOK */ | |
2538 | } else { | |
2539 | /* Integer is imprecise. NOK, IOKp */ | |
28e5dec8 | 2540 | } |
c2988b20 | 2541 | return IS_NUMBER_OVERFLOW_IV; |
28e5dec8 | 2542 | } |
645c22ef DM |
2543 | #endif /* !NV_PRESERVES_UV*/ |
2544 | ||
891f9566 YST |
2545 | /* sv_2iv() is now a macro using Perl_sv_2iv_flags(); |
2546 | * this function provided for binary compatibility only | |
2547 | */ | |
2548 | ||
2549 | IV | |
2550 | Perl_sv_2iv(pTHX_ register SV *sv) | |
2551 | { | |
2552 | return sv_2iv_flags(sv, SV_GMAGIC); | |
2553 | } | |
2554 | ||
645c22ef | 2555 | /* |
891f9566 | 2556 | =for apidoc sv_2iv_flags |
645c22ef | 2557 | |
891f9566 YST |
2558 | Return the integer value of an SV, doing any necessary string |
2559 | conversion. If flags includes SV_GMAGIC, does an mg_get() first. | |
2560 | Normally used via the C<SvIV(sv)> and C<SvIVx(sv)> macros. | |
645c22ef DM |
2561 | |
2562 | =cut | |
2563 | */ | |
28e5dec8 | 2564 | |
a0d0e21e | 2565 | IV |
891f9566 | 2566 | Perl_sv_2iv_flags(pTHX_ register SV *sv, I32 flags) |
79072805 LW |
2567 | { |
2568 | if (!sv) | |
2569 | return 0; | |
8990e307 | 2570 | if (SvGMAGICAL(sv)) { |
891f9566 YST |
2571 | if (flags & SV_GMAGIC) |
2572 | mg_get(sv); | |
463ee0b2 LW |
2573 | if (SvIOKp(sv)) |
2574 | return SvIVX(sv); | |
748a9306 | 2575 | if (SvNOKp(sv)) { |
25da4f38 | 2576 | return I_V(SvNVX(sv)); |
748a9306 | 2577 | } |
36477c24 | 2578 | if (SvPOKp(sv) && SvLEN(sv)) |
2579 | return asIV(sv); | |
3fe9a6f1 | 2580 | if (!SvROK(sv)) { |
d008e5eb | 2581 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2582 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 2583 | report_uninit(sv); |
c6ee37c5 | 2584 | } |
36477c24 | 2585 | return 0; |
3fe9a6f1 | 2586 | } |
463ee0b2 | 2587 | } |
ed6116ce | 2588 | if (SvTHINKFIRST(sv)) { |
a0d0e21e | 2589 | if (SvROK(sv)) { |
a0d0e21e | 2590 | SV* tmpstr; |
1554e226 | 2591 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2592 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2593 | return SvIV(tmpstr); |
56431972 | 2594 | return PTR2IV(SvRV(sv)); |
a0d0e21e | 2595 | } |
765f542d NC |
2596 | if (SvIsCOW(sv)) { |
2597 | sv_force_normal_flags(sv, 0); | |
47deb5e7 | 2598 | } |
0336b60e | 2599 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2600 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2601 | report_uninit(sv); |
ed6116ce LW |
2602 | return 0; |
2603 | } | |
79072805 | 2604 | } |
25da4f38 IZ |
2605 | if (SvIOKp(sv)) { |
2606 | if (SvIsUV(sv)) { | |
2607 | return (IV)(SvUVX(sv)); | |
2608 | } | |
2609 | else { | |
2610 | return SvIVX(sv); | |
2611 | } | |
463ee0b2 | 2612 | } |
748a9306 | 2613 | if (SvNOKp(sv)) { |
28e5dec8 JH |
2614 | /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv |
2615 | * without also getting a cached IV/UV from it at the same time | |
2616 | * (ie PV->NV conversion should detect loss of accuracy and cache | |
2617 | * IV or UV at same time to avoid this. NWC */ | |
25da4f38 IZ |
2618 | |
2619 | if (SvTYPE(sv) == SVt_NV) | |
2620 | sv_upgrade(sv, SVt_PVNV); | |
2621 | ||
28e5dec8 JH |
2622 | (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */ |
2623 | /* < not <= as for NV doesn't preserve UV, ((NV)IV_MAX+1) will almost | |
2624 | certainly cast into the IV range at IV_MAX, whereas the correct | |
2625 | answer is the UV IV_MAX +1. Hence < ensures that dodgy boundary | |
2626 | cases go to UV */ | |
2627 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
748a9306 | 2628 | SvIVX(sv) = I_V(SvNVX(sv)); |
28e5dec8 JH |
2629 | if (SvNVX(sv) == (NV) SvIVX(sv) |
2630 | #ifndef NV_PRESERVES_UV | |
2631 | && (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2632 | (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv))) | |
2633 | /* Don't flag it as "accurately an integer" if the number | |
2634 | came from a (by definition imprecise) NV operation, and | |
2635 | we're outside the range of NV integer precision */ | |
2636 | #endif | |
2637 | ) { | |
2638 | SvIOK_on(sv); /* Can this go wrong with rounding? NWC */ | |
2639 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2640 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (precise)\n", |
28e5dec8 JH |
2641 | PTR2UV(sv), |
2642 | SvNVX(sv), | |
2643 | SvIVX(sv))); | |
2644 | ||
2645 | } else { | |
2646 | /* IV not precise. No need to convert from PV, as NV | |
2647 | conversion would already have cached IV if it detected | |
2648 | that PV->IV would be better than PV->NV->IV | |
2649 | flags already correct - don't set public IOK. */ | |
2650 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2651 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (imprecise)\n", |
28e5dec8 JH |
2652 | PTR2UV(sv), |
2653 | SvNVX(sv), | |
2654 | SvIVX(sv))); | |
2655 | } | |
2656 | /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN, | |
2657 | but the cast (NV)IV_MIN rounds to a the value less (more | |
2658 | negative) than IV_MIN which happens to be equal to SvNVX ?? | |
2659 | Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and | |
2660 | NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and | |
2661 | (NV)UVX == NVX are both true, but the values differ. :-( | |
2662 | Hopefully for 2s complement IV_MIN is something like | |
2663 | 0x8000000000000000 which will be exact. NWC */ | |
d460ef45 | 2664 | } |
25da4f38 | 2665 | else { |
ff68c719 | 2666 | SvUVX(sv) = U_V(SvNVX(sv)); |
28e5dec8 JH |
2667 | if ( |
2668 | (SvNVX(sv) == (NV) SvUVX(sv)) | |
2669 | #ifndef NV_PRESERVES_UV | |
2670 | /* Make sure it's not 0xFFFFFFFFFFFFFFFF */ | |
2671 | /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */ | |
2672 | && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv)) | |
2673 | /* Don't flag it as "accurately an integer" if the number | |
2674 | came from a (by definition imprecise) NV operation, and | |
2675 | we're outside the range of NV integer precision */ | |
2676 | #endif | |
2677 | ) | |
2678 | SvIOK_on(sv); | |
25da4f38 IZ |
2679 | SvIsUV_on(sv); |
2680 | ret_iv_max: | |
1c846c1f | 2681 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
57def98f | 2682 | "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n", |
56431972 | 2683 | PTR2UV(sv), |
57def98f JH |
2684 | SvUVX(sv), |
2685 | SvUVX(sv))); | |
25da4f38 IZ |
2686 | return (IV)SvUVX(sv); |
2687 | } | |
748a9306 LW |
2688 | } |
2689 | else if (SvPOKp(sv) && SvLEN(sv)) { | |
c2988b20 NC |
2690 | UV value; |
2691 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
25da4f38 IZ |
2692 | /* We want to avoid a possible problem when we cache an IV which |
2693 | may be later translated to an NV, and the resulting NV is not | |
c2988b20 NC |
2694 | the same as the direct translation of the initial string |
2695 | (eg 123.456 can shortcut to the IV 123 with atol(), but we must | |
2696 | be careful to ensure that the value with the .456 is around if the | |
2697 | NV value is requested in the future). | |
1c846c1f | 2698 | |
25da4f38 IZ |
2699 | This means that if we cache such an IV, we need to cache the |
2700 | NV as well. Moreover, we trade speed for space, and do not | |
28e5dec8 | 2701 | cache the NV if we are sure it's not needed. |
25da4f38 | 2702 | */ |
16b7a9a4 | 2703 | |
c2988b20 NC |
2704 | /* SVt_PVNV is one higher than SVt_PVIV, hence this order */ |
2705 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2706 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2707 | /* It's definitely an integer, only upgrade to PVIV */ |
28e5dec8 JH |
2708 | if (SvTYPE(sv) < SVt_PVIV) |
2709 | sv_upgrade(sv, SVt_PVIV); | |
f7bbb42a | 2710 | (void)SvIOK_on(sv); |
c2988b20 NC |
2711 | } else if (SvTYPE(sv) < SVt_PVNV) |
2712 | sv_upgrade(sv, SVt_PVNV); | |
28e5dec8 | 2713 | |
c2988b20 NC |
2714 | /* If NV preserves UV then we only use the UV value if we know that |
2715 | we aren't going to call atof() below. If NVs don't preserve UVs | |
2716 | then the value returned may have more precision than atof() will | |
2717 | return, even though value isn't perfectly accurate. */ | |
2718 | if ((numtype & (IS_NUMBER_IN_UV | |
2719 | #ifdef NV_PRESERVES_UV | |
2720 | | IS_NUMBER_NOT_INT | |
2721 | #endif | |
2722 | )) == IS_NUMBER_IN_UV) { | |
2723 | /* This won't turn off the public IOK flag if it was set above */ | |
2724 | (void)SvIOKp_on(sv); | |
2725 | ||
2726 | if (!(numtype & IS_NUMBER_NEG)) { | |
2727 | /* positive */; | |
2728 | if (value <= (UV)IV_MAX) { | |
2729 | SvIVX(sv) = (IV)value; | |
2730 | } else { | |
2731 | SvUVX(sv) = value; | |
2732 | SvIsUV_on(sv); | |
2733 | } | |
2734 | } else { | |
2735 | /* 2s complement assumption */ | |
2736 | if (value <= (UV)IV_MIN) { | |
2737 | SvIVX(sv) = -(IV)value; | |
2738 | } else { | |
2739 | /* Too negative for an IV. This is a double upgrade, but | |
d1be9408 | 2740 | I'm assuming it will be rare. */ |
c2988b20 NC |
2741 | if (SvTYPE(sv) < SVt_PVNV) |
2742 | sv_upgrade(sv, SVt_PVNV); | |
2743 | SvNOK_on(sv); | |
2744 | SvIOK_off(sv); | |
2745 | SvIOKp_on(sv); | |
2746 | SvNVX(sv) = -(NV)value; | |
2747 | SvIVX(sv) = IV_MIN; | |
2748 | } | |
2749 | } | |
2750 | } | |
2751 | /* For !NV_PRESERVES_UV and IS_NUMBER_IN_UV and IS_NUMBER_NOT_INT we | |
2752 | will be in the previous block to set the IV slot, and the next | |
2753 | block to set the NV slot. So no else here. */ | |
2754 | ||
2755 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2756 | != IS_NUMBER_IN_UV) { | |
2757 | /* It wasn't an (integer that doesn't overflow the UV). */ | |
2758 | SvNVX(sv) = Atof(SvPVX(sv)); | |
28e5dec8 | 2759 | |
c2988b20 NC |
2760 | if (! numtype && ckWARN(WARN_NUMERIC)) |
2761 | not_a_number(sv); | |
28e5dec8 | 2762 | |
65202027 | 2763 | #if defined(USE_LONG_DOUBLE) |
c2988b20 NC |
2764 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%" PERL_PRIgldbl ")\n", |
2765 | PTR2UV(sv), SvNVX(sv))); | |
65202027 | 2766 | #else |
1779d84d | 2767 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"NVgf")\n", |
c2988b20 | 2768 | PTR2UV(sv), SvNVX(sv))); |
65202027 | 2769 | #endif |
28e5dec8 JH |
2770 | |
2771 | ||
2772 | #ifdef NV_PRESERVES_UV | |
c2988b20 NC |
2773 | (void)SvIOKp_on(sv); |
2774 | (void)SvNOK_on(sv); | |
2775 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
2776 | SvIVX(sv) = I_V(SvNVX(sv)); | |
2777 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { | |
2778 | SvIOK_on(sv); | |
28e5dec8 | 2779 | } else { |
c2988b20 NC |
2780 | /* Integer is imprecise. NOK, IOKp */ |
2781 | } | |
2782 | /* UV will not work better than IV */ | |
2783 | } else { | |
2784 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2785 | SvIsUV_on(sv); | |
2786 | /* Integer is inaccurate. NOK, IOKp, is UV */ | |
2787 | SvUVX(sv) = UV_MAX; | |
2788 | SvIsUV_on(sv); | |
2789 | } else { | |
2790 | SvUVX(sv) = U_V(SvNVX(sv)); | |
2791 | /* 0xFFFFFFFFFFFFFFFF not an issue in here */ | |
2792 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
2793 | SvIOK_on(sv); | |
28e5dec8 JH |
2794 | SvIsUV_on(sv); |
2795 | } else { | |
c2988b20 NC |
2796 | /* Integer is imprecise. NOK, IOKp, is UV */ |
2797 | SvIsUV_on(sv); | |
28e5dec8 | 2798 | } |
28e5dec8 | 2799 | } |
c2988b20 NC |
2800 | goto ret_iv_max; |
2801 | } | |
28e5dec8 | 2802 | #else /* NV_PRESERVES_UV */ |
c2988b20 NC |
2803 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2804 | == (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) { | |
2805 | /* The IV slot will have been set from value returned by | |
2806 | grok_number above. The NV slot has just been set using | |
2807 | Atof. */ | |
560b0c46 | 2808 | SvNOK_on(sv); |
c2988b20 NC |
2809 | assert (SvIOKp(sv)); |
2810 | } else { | |
2811 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2812 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { | |
2813 | /* Small enough to preserve all bits. */ | |
2814 | (void)SvIOKp_on(sv); | |
2815 | SvNOK_on(sv); | |
2816 | SvIVX(sv) = I_V(SvNVX(sv)); | |
2817 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) | |
2818 | SvIOK_on(sv); | |
2819 | /* Assumption: first non-preserved integer is < IV_MAX, | |
2820 | this NV is in the preserved range, therefore: */ | |
2821 | if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)) | |
2822 | < (UV)IV_MAX)) { | |
32fdb065 | 2823 | 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 |
2824 | } |
2825 | } else { | |
2826 | /* IN_UV NOT_INT | |
2827 | 0 0 already failed to read UV. | |
2828 | 0 1 already failed to read UV. | |
2829 | 1 0 you won't get here in this case. IV/UV | |
2830 | slot set, public IOK, Atof() unneeded. | |
2831 | 1 1 already read UV. | |
2832 | so there's no point in sv_2iuv_non_preserve() attempting | |
2833 | to use atol, strtol, strtoul etc. */ | |
2834 | if (sv_2iuv_non_preserve (sv, numtype) | |
2835 | >= IS_NUMBER_OVERFLOW_IV) | |
2836 | goto ret_iv_max; | |
2837 | } | |
2838 | } | |
28e5dec8 | 2839 | #endif /* NV_PRESERVES_UV */ |
25da4f38 | 2840 | } |
28e5dec8 | 2841 | } else { |
599cee73 | 2842 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) |
29489e7c | 2843 | report_uninit(sv); |
25da4f38 IZ |
2844 | if (SvTYPE(sv) < SVt_IV) |
2845 | /* Typically the caller expects that sv_any is not NULL now. */ | |
2846 | sv_upgrade(sv, SVt_IV); | |
a0d0e21e | 2847 | return 0; |
79072805 | 2848 | } |
1d7c1841 GS |
2849 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n", |
2850 | PTR2UV(sv),SvIVX(sv))); | |
25da4f38 | 2851 | return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv); |
79072805 LW |
2852 | } |
2853 | ||
891f9566 YST |
2854 | /* sv_2uv() is now a macro using Perl_sv_2uv_flags(); |
2855 | * this function provided for binary compatibility only | |
2856 | */ | |
2857 | ||
2858 | UV | |
2859 | Perl_sv_2uv(pTHX_ register SV *sv) | |
2860 | { | |
2861 | return sv_2uv_flags(sv, SV_GMAGIC); | |
2862 | } | |
2863 | ||
645c22ef | 2864 | /* |
891f9566 | 2865 | =for apidoc sv_2uv_flags |
645c22ef DM |
2866 | |
2867 | Return the unsigned integer value of an SV, doing any necessary string | |
891f9566 YST |
2868 | conversion. If flags includes SV_GMAGIC, does an mg_get() first. |
2869 | Normally used via the C<SvUV(sv)> and C<SvUVx(sv)> macros. | |
645c22ef DM |
2870 | |
2871 | =cut | |
2872 | */ | |
2873 | ||
ff68c719 | 2874 | UV |
891f9566 | 2875 | Perl_sv_2uv_flags(pTHX_ register SV *sv, I32 flags) |
ff68c719 | 2876 | { |
2877 | if (!sv) | |
2878 | return 0; | |
2879 | if (SvGMAGICAL(sv)) { | |
891f9566 YST |
2880 | if (flags & SV_GMAGIC) |
2881 | mg_get(sv); | |
ff68c719 | 2882 | if (SvIOKp(sv)) |
2883 | return SvUVX(sv); | |
2884 | if (SvNOKp(sv)) | |
2885 | return U_V(SvNVX(sv)); | |
36477c24 | 2886 | if (SvPOKp(sv) && SvLEN(sv)) |
2887 | return asUV(sv); | |
3fe9a6f1 | 2888 | if (!SvROK(sv)) { |
d008e5eb | 2889 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2890 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 2891 | report_uninit(sv); |
c6ee37c5 | 2892 | } |
36477c24 | 2893 | return 0; |
3fe9a6f1 | 2894 | } |
ff68c719 | 2895 | } |
2896 | if (SvTHINKFIRST(sv)) { | |
2897 | if (SvROK(sv)) { | |
ff68c719 | 2898 | SV* tmpstr; |
1554e226 | 2899 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2900 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2901 | return SvUV(tmpstr); |
56431972 | 2902 | return PTR2UV(SvRV(sv)); |
ff68c719 | 2903 | } |
765f542d NC |
2904 | if (SvIsCOW(sv)) { |
2905 | sv_force_normal_flags(sv, 0); | |
8a818333 | 2906 | } |
0336b60e | 2907 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2908 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2909 | report_uninit(sv); |
ff68c719 | 2910 | return 0; |
2911 | } | |
2912 | } | |
25da4f38 IZ |
2913 | if (SvIOKp(sv)) { |
2914 | if (SvIsUV(sv)) { | |
2915 | return SvUVX(sv); | |
2916 | } | |
2917 | else { | |
2918 | return (UV)SvIVX(sv); | |
2919 | } | |
ff68c719 | 2920 | } |
2921 | if (SvNOKp(sv)) { | |
28e5dec8 JH |
2922 | /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv |
2923 | * without also getting a cached IV/UV from it at the same time | |
2924 | * (ie PV->NV conversion should detect loss of accuracy and cache | |
2925 | * IV or UV at same time to avoid this. */ | |
2926 | /* IV-over-UV optimisation - choose to cache IV if possible */ | |
2927 | ||
25da4f38 IZ |
2928 | if (SvTYPE(sv) == SVt_NV) |
2929 | sv_upgrade(sv, SVt_PVNV); | |
28e5dec8 JH |
2930 | |
2931 | (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */ | |
2932 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
f7bbb42a | 2933 | SvIVX(sv) = I_V(SvNVX(sv)); |
28e5dec8 JH |
2934 | if (SvNVX(sv) == (NV) SvIVX(sv) |
2935 | #ifndef NV_PRESERVES_UV | |
2936 | && (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2937 | (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv))) | |
2938 | /* Don't flag it as "accurately an integer" if the number | |
2939 | came from a (by definition imprecise) NV operation, and | |
2940 | we're outside the range of NV integer precision */ | |
2941 | #endif | |
2942 | ) { | |
2943 | SvIOK_on(sv); /* Can this go wrong with rounding? NWC */ | |
2944 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2945 | "0x%"UVxf" uv(%"NVgf" => %"IVdf") (precise)\n", |
28e5dec8 JH |
2946 | PTR2UV(sv), |
2947 | SvNVX(sv), | |
2948 | SvIVX(sv))); | |
2949 | ||
2950 | } else { | |
2951 | /* IV not precise. No need to convert from PV, as NV | |
2952 | conversion would already have cached IV if it detected | |
2953 | that PV->IV would be better than PV->NV->IV | |
2954 | flags already correct - don't set public IOK. */ | |
2955 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2956 | "0x%"UVxf" uv(%"NVgf" => %"IVdf") (imprecise)\n", |
28e5dec8 JH |
2957 | PTR2UV(sv), |
2958 | SvNVX(sv), | |
2959 | SvIVX(sv))); | |
2960 | } | |
2961 | /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN, | |
2962 | but the cast (NV)IV_MIN rounds to a the value less (more | |
2963 | negative) than IV_MIN which happens to be equal to SvNVX ?? | |
2964 | Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and | |
2965 | NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and | |
2966 | (NV)UVX == NVX are both true, but the values differ. :-( | |
2967 | Hopefully for 2s complement IV_MIN is something like | |
2968 | 0x8000000000000000 which will be exact. NWC */ | |
d460ef45 | 2969 | } |
28e5dec8 JH |
2970 | else { |
2971 | SvUVX(sv) = U_V(SvNVX(sv)); | |
2972 | if ( | |
2973 | (SvNVX(sv) == (NV) SvUVX(sv)) | |
2974 | #ifndef NV_PRESERVES_UV | |
2975 | /* Make sure it's not 0xFFFFFFFFFFFFFFFF */ | |
2976 | /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */ | |
2977 | && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv)) | |
2978 | /* Don't flag it as "accurately an integer" if the number | |
2979 | came from a (by definition imprecise) NV operation, and | |
2980 | we're outside the range of NV integer precision */ | |
2981 | #endif | |
2982 | ) | |
2983 | SvIOK_on(sv); | |
2984 | SvIsUV_on(sv); | |
1c846c1f | 2985 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
28e5dec8 | 2986 | "0x%"UVxf" 2uv(%"UVuf" => %"IVdf") (as unsigned)\n", |
57def98f | 2987 | PTR2UV(sv), |
28e5dec8 JH |
2988 | SvUVX(sv), |
2989 | SvUVX(sv))); | |
25da4f38 | 2990 | } |
ff68c719 | 2991 | } |
2992 | else if (SvPOKp(sv) && SvLEN(sv)) { | |
c2988b20 NC |
2993 | UV value; |
2994 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
25da4f38 IZ |
2995 | |
2996 | /* We want to avoid a possible problem when we cache a UV which | |
2997 | may be later translated to an NV, and the resulting NV is not | |
2998 | the translation of the initial data. | |
1c846c1f | 2999 | |
25da4f38 IZ |
3000 | This means that if we cache such a UV, we need to cache the |
3001 | NV as well. Moreover, we trade speed for space, and do not | |
3002 | cache the NV if not needed. | |
3003 | */ | |
16b7a9a4 | 3004 | |
c2988b20 NC |
3005 | /* SVt_PVNV is one higher than SVt_PVIV, hence this order */ |
3006 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
3007 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 3008 | /* It's definitely an integer, only upgrade to PVIV */ |
28e5dec8 | 3009 | if (SvTYPE(sv) < SVt_PVIV) |
f7bbb42a JH |
3010 | sv_upgrade(sv, SVt_PVIV); |
3011 | (void)SvIOK_on(sv); | |
c2988b20 NC |
3012 | } else if (SvTYPE(sv) < SVt_PVNV) |
3013 | sv_upgrade(sv, SVt_PVNV); | |
d460ef45 | 3014 | |
c2988b20 NC |
3015 | /* If NV preserves UV then we only use the UV value if we know that |
3016 | we aren't going to call atof() below. If NVs don't preserve UVs | |
3017 | then the value returned may have more precision than atof() will | |
3018 | return, even though it isn't accurate. */ | |
3019 | if ((numtype & (IS_NUMBER_IN_UV | |
3020 | #ifdef NV_PRESERVES_UV | |
3021 | | IS_NUMBER_NOT_INT | |
3022 | #endif | |
3023 | )) == IS_NUMBER_IN_UV) { | |
3024 | /* This won't turn off the public IOK flag if it was set above */ | |
3025 | (void)SvIOKp_on(sv); | |
3026 | ||
3027 | if (!(numtype & IS_NUMBER_NEG)) { | |
3028 | /* positive */; | |
3029 | if (value <= (UV)IV_MAX) { | |
3030 | SvIVX(sv) = (IV)value; | |
28e5dec8 JH |
3031 | } else { |
3032 | /* it didn't overflow, and it was positive. */ | |
c2988b20 | 3033 | SvUVX(sv) = value; |
28e5dec8 JH |
3034 | SvIsUV_on(sv); |
3035 | } | |
c2988b20 NC |
3036 | } else { |
3037 | /* 2s complement assumption */ | |
3038 | if (value <= (UV)IV_MIN) { | |
3039 | SvIVX(sv) = -(IV)value; | |
3040 | } else { | |
3041 | /* Too negative for an IV. This is a double upgrade, but | |
d1be9408 | 3042 | I'm assuming it will be rare. */ |
c2988b20 NC |
3043 | if (SvTYPE(sv) < SVt_PVNV) |
3044 | sv_upgrade(sv, SVt_PVNV); | |
3045 | SvNOK_on(sv); | |
3046 | SvIOK_off(sv); | |
3047 | SvIOKp_on(sv); | |
3048 | SvNVX(sv) = -(NV)value; | |
3049 | SvIVX(sv) = IV_MIN; | |
3050 | } | |
3051 | } | |
3052 | } | |
3053 | ||
3054 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
3055 | != IS_NUMBER_IN_UV) { | |
3056 | /* It wasn't an integer, or it overflowed the UV. */ | |
3057 | SvNVX(sv) = Atof(SvPVX(sv)); | |
28e5dec8 | 3058 | |
c2988b20 | 3059 | if (! numtype && ckWARN(WARN_NUMERIC)) |
28e5dec8 JH |
3060 | not_a_number(sv); |
3061 | ||
3062 | #if defined(USE_LONG_DOUBLE) | |
c2988b20 NC |
3063 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%" PERL_PRIgldbl ")\n", |
3064 | PTR2UV(sv), SvNVX(sv))); | |
28e5dec8 | 3065 | #else |
1779d84d | 3066 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"NVgf")\n", |
c2988b20 | 3067 | PTR2UV(sv), SvNVX(sv))); |
28e5dec8 JH |
3068 | #endif |
3069 | ||
3070 | #ifdef NV_PRESERVES_UV | |
c2988b20 NC |
3071 | (void)SvIOKp_on(sv); |
3072 | (void)SvNOK_on(sv); | |
3073 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
3074 | SvIVX(sv) = I_V(SvNVX(sv)); | |
3075 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { | |
3076 | SvIOK_on(sv); | |
3077 | } else { | |
3078 | /* Integer is imprecise. NOK, IOKp */ | |
3079 | } | |
3080 | /* UV will not work better than IV */ | |
3081 | } else { | |
3082 | if (SvNVX(sv) > (NV)UV_MAX) { | |
3083 | SvIsUV_on(sv); | |
3084 | /* Integer is inaccurate. NOK, IOKp, is UV */ | |
3085 | SvUVX(sv) = UV_MAX; | |
3086 | SvIsUV_on(sv); | |
3087 | } else { | |
3088 | SvUVX(sv) = U_V(SvNVX(sv)); | |
3089 | /* 0xFFFFFFFFFFFFFFFF not an issue in here, NVs | |
3090 | NV preservse UV so can do correct comparison. */ | |
3091 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
3092 | SvIOK_on(sv); | |
3093 | SvIsUV_on(sv); | |
3094 | } else { | |
3095 | /* Integer is imprecise. NOK, IOKp, is UV */ | |
3096 | SvIsUV_on(sv); | |
3097 | } | |
3098 | } | |
3099 | } | |
28e5dec8 | 3100 | #else /* NV_PRESERVES_UV */ |
c2988b20 NC |
3101 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
3102 | == (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) { | |
3103 | /* The UV slot will have been set from value returned by | |
3104 | grok_number above. The NV slot has just been set using | |
3105 | Atof. */ | |
560b0c46 | 3106 | SvNOK_on(sv); |
c2988b20 NC |
3107 | assert (SvIOKp(sv)); |
3108 | } else { | |
3109 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
3110 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { | |
3111 | /* Small enough to preserve all bits. */ | |
3112 | (void)SvIOKp_on(sv); | |
3113 | SvNOK_on(sv); | |
3114 | SvIVX(sv) = I_V(SvNVX(sv)); | |
3115 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) | |
3116 | SvIOK_on(sv); | |
3117 | /* Assumption: first non-preserved integer is < IV_MAX, | |
3118 | this NV is in the preserved range, therefore: */ | |
3119 | if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)) | |
3120 | < (UV)IV_MAX)) { | |
32fdb065 | 3121 | 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 |
3122 | } |
3123 | } else | |
3124 | sv_2iuv_non_preserve (sv, numtype); | |
3125 | } | |
28e5dec8 | 3126 | #endif /* NV_PRESERVES_UV */ |
f7bbb42a | 3127 | } |
ff68c719 | 3128 | } |
3129 | else { | |
d008e5eb | 3130 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 3131 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 3132 | report_uninit(sv); |
c6ee37c5 | 3133 | } |
25da4f38 IZ |
3134 | if (SvTYPE(sv) < SVt_IV) |
3135 | /* Typically the caller expects that sv_any is not NULL now. */ | |
3136 | sv_upgrade(sv, SVt_IV); | |
ff68c719 | 3137 | return 0; |
3138 | } | |
25da4f38 | 3139 | |
1d7c1841 GS |
3140 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n", |
3141 | PTR2UV(sv),SvUVX(sv))); | |
25da4f38 | 3142 | return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv); |
ff68c719 | 3143 | } |
3144 | ||
645c22ef DM |
3145 | /* |
3146 | =for apidoc sv_2nv | |
3147 | ||
3148 | Return the num value of an SV, doing any necessary string or integer | |
3149 | conversion, magic etc. Normally used via the C<SvNV(sv)> and C<SvNVx(sv)> | |
3150 | macros. | |
3151 | ||
3152 | =cut | |
3153 | */ | |
3154 | ||
65202027 | 3155 | NV |
864dbfa3 | 3156 | Perl_sv_2nv(pTHX_ register SV *sv) |
79072805 LW |
3157 | { |
3158 | if (!sv) | |
3159 | return 0.0; | |
8990e307 | 3160 | if (SvGMAGICAL(sv)) { |
463ee0b2 LW |
3161 | mg_get(sv); |
3162 | if (SvNOKp(sv)) | |
3163 | return SvNVX(sv); | |
a0d0e21e | 3164 | if (SvPOKp(sv) && SvLEN(sv)) { |
c2988b20 NC |
3165 | if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && |
3166 | !grok_number(SvPVX(sv), SvCUR(sv), NULL)) | |
a0d0e21e | 3167 | not_a_number(sv); |
097ee67d | 3168 | return Atof(SvPVX(sv)); |
a0d0e21e | 3169 | } |
25da4f38 | 3170 | if (SvIOKp(sv)) { |
1c846c1f | 3171 | if (SvIsUV(sv)) |
65202027 | 3172 | return (NV)SvUVX(sv); |
25da4f38 | 3173 | else |
65202027 | 3174 | return (NV)SvIVX(sv); |
25da4f38 | 3175 | } |
16d20bd9 | 3176 | if (!SvROK(sv)) { |
d008e5eb | 3177 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 3178 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 3179 | report_uninit(sv); |
c6ee37c5 | 3180 | } |
16d20bd9 AD |
3181 | return 0; |
3182 | } | |
463ee0b2 | 3183 | } |
ed6116ce | 3184 | if (SvTHINKFIRST(sv)) { |
a0d0e21e | 3185 | if (SvROK(sv)) { |
a0d0e21e | 3186 | SV* tmpstr; |
1554e226 | 3187 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 3188 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 3189 | return SvNV(tmpstr); |
56431972 | 3190 | return PTR2NV(SvRV(sv)); |
a0d0e21e | 3191 | } |
765f542d NC |
3192 | if (SvIsCOW(sv)) { |
3193 | sv_force_normal_flags(sv, 0); | |
8a818333 | 3194 | } |
0336b60e | 3195 | if (SvREADONLY(sv) && !SvOK(sv)) { |
599cee73 | 3196 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 3197 | report_uninit(sv); |
ed6116ce LW |
3198 | return 0.0; |
3199 | } | |
79072805 LW |
3200 | } |
3201 | if (SvTYPE(sv) < SVt_NV) { | |
463ee0b2 LW |
3202 | if (SvTYPE(sv) == SVt_IV) |
3203 | sv_upgrade(sv, SVt_PVNV); | |
3204 | else | |
3205 | sv_upgrade(sv, SVt_NV); | |
906f284f | 3206 | #ifdef USE_LONG_DOUBLE |
097ee67d | 3207 | DEBUG_c({ |
f93f4e46 | 3208 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
3209 | PerlIO_printf(Perl_debug_log, |
3210 | "0x%"UVxf" num(%" PERL_PRIgldbl ")\n", | |
3211 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
3212 | RESTORE_NUMERIC_LOCAL(); |
3213 | }); | |
65202027 | 3214 | #else |
572bbb43 | 3215 | DEBUG_c({ |
f93f4e46 | 3216 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 3217 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%"NVgf")\n", |
1d7c1841 | 3218 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
3219 | RESTORE_NUMERIC_LOCAL(); |
3220 | }); | |
572bbb43 | 3221 | #endif |
79072805 LW |
3222 | } |
3223 | else if (SvTYPE(sv) < SVt_PVNV) | |
3224 | sv_upgrade(sv, SVt_PVNV); | |
59d8ce62 NC |
3225 | if (SvNOKp(sv)) { |
3226 | return SvNVX(sv); | |
61604483 | 3227 | } |
59d8ce62 | 3228 | if (SvIOKp(sv)) { |
65202027 | 3229 | SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv); |
28e5dec8 JH |
3230 | #ifdef NV_PRESERVES_UV |
3231 | SvNOK_on(sv); | |
3232 | #else | |
3233 | /* Only set the public NV OK flag if this NV preserves the IV */ | |
3234 | /* Check it's not 0xFFFFFFFFFFFFFFFF */ | |
3235 | if (SvIsUV(sv) ? ((SvUVX(sv) != UV_MAX)&&(SvUVX(sv) == U_V(SvNVX(sv)))) | |
3236 | : (SvIVX(sv) == I_V(SvNVX(sv)))) | |
3237 | SvNOK_on(sv); | |
3238 | else | |
3239 | SvNOKp_on(sv); | |
3240 | #endif | |
93a17b20 | 3241 | } |
748a9306 | 3242 | else if (SvPOKp(sv) && SvLEN(sv)) { |
c2988b20 NC |
3243 | UV value; |
3244 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
3245 | if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !numtype) | |
a0d0e21e | 3246 | not_a_number(sv); |
28e5dec8 | 3247 | #ifdef NV_PRESERVES_UV |
c2988b20 NC |
3248 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
3249 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 3250 | /* It's definitely an integer */ |
c2988b20 NC |
3251 | SvNVX(sv) = (numtype & IS_NUMBER_NEG) ? -(NV)value : (NV)value; |
3252 | } else | |
3253 | SvNVX(sv) = Atof(SvPVX(sv)); | |
28e5dec8 JH |
3254 | SvNOK_on(sv); |
3255 | #else | |
c2988b20 | 3256 | SvNVX(sv) = Atof(SvPVX(sv)); |
28e5dec8 JH |
3257 | /* Only set the public NV OK flag if this NV preserves the value in |
3258 | the PV at least as well as an IV/UV would. | |
3259 | Not sure how to do this 100% reliably. */ | |
3260 | /* if that shift count is out of range then Configure's test is | |
3261 | wonky. We shouldn't be in here with NV_PRESERVES_UV_BITS == | |
3262 | UV_BITS */ | |
3263 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
c2988b20 | 3264 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { |
28e5dec8 | 3265 | SvNOK_on(sv); /* Definitely small enough to preserve all bits */ |
c2988b20 NC |
3266 | } else if (!(numtype & IS_NUMBER_IN_UV)) { |
3267 | /* Can't use strtol etc to convert this string, so don't try. | |
3268 | sv_2iv and sv_2uv will use the NV to convert, not the PV. */ | |
3269 | SvNOK_on(sv); | |
3270 | } else { | |
3271 | /* value has been set. It may not be precise. */ | |
3272 | if ((numtype & IS_NUMBER_NEG) && (value > (UV)IV_MIN)) { | |
3273 | /* 2s complement assumption for (UV)IV_MIN */ | |
3274 | SvNOK_on(sv); /* Integer is too negative. */ | |
3275 | } else { | |
3276 | SvNOKp_on(sv); | |
3277 | SvIOKp_on(sv); | |
6fa402ec | 3278 | |
c2988b20 NC |
3279 | if (numtype & IS_NUMBER_NEG) { |
3280 | SvIVX(sv) = -(IV)value; | |
3281 | } else if (value <= (UV)IV_MAX) { | |
3282 | SvIVX(sv) = (IV)value; | |
3283 | } else { | |
3284 | SvUVX(sv) = value; | |
3285 | SvIsUV_on(sv); | |
3286 | } | |
3287 | ||
3288 | if (numtype & IS_NUMBER_NOT_INT) { | |
3289 | /* I believe that even if the original PV had decimals, | |
3290 | they are lost beyond the limit of the FP precision. | |
3291 | However, neither is canonical, so both only get p | |
3292 | flags. NWC, 2000/11/25 */ | |
3293 | /* Both already have p flags, so do nothing */ | |
3294 | } else { | |
3295 | NV nv = SvNVX(sv); | |
3296 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
3297 | if (SvIVX(sv) == I_V(nv)) { | |
3298 | SvNOK_on(sv); | |
3299 | SvIOK_on(sv); | |
3300 | } else { | |
3301 | SvIOK_on(sv); | |
3302 | /* It had no "." so it must be integer. */ | |
3303 | } | |
3304 | } else { | |
3305 | /* between IV_MAX and NV(UV_MAX). | |
3306 | Could be slightly > UV_MAX */ | |
6fa402ec | 3307 | |
c2988b20 NC |
3308 | if (numtype & IS_NUMBER_NOT_INT) { |
3309 | /* UV and NV both imprecise. */ | |
3310 | } else { | |
3311 | UV nv_as_uv = U_V(nv); | |
3312 | ||
3313 | if (value == nv_as_uv && SvUVX(sv) != UV_MAX) { | |
3314 | SvNOK_on(sv); | |
3315 | SvIOK_on(sv); | |
3316 | } else { | |
3317 | SvIOK_on(sv); | |
3318 | } | |
3319 | } | |
3320 | } | |
3321 | } | |
3322 | } | |
3323 | } | |
28e5dec8 | 3324 | #endif /* NV_PRESERVES_UV */ |
93a17b20 | 3325 | } |
79072805 | 3326 | else { |
599cee73 | 3327 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) |
29489e7c | 3328 | report_uninit(sv); |
25da4f38 IZ |
3329 | if (SvTYPE(sv) < SVt_NV) |
3330 | /* Typically the caller expects that sv_any is not NULL now. */ | |
28e5dec8 JH |
3331 | /* XXX Ilya implies that this is a bug in callers that assume this |
3332 | and ideally should be fixed. */ | |
25da4f38 | 3333 | sv_upgrade(sv, SVt_NV); |
a0d0e21e | 3334 | return 0.0; |
79072805 | 3335 | } |
572bbb43 | 3336 | #if defined(USE_LONG_DOUBLE) |
097ee67d | 3337 | DEBUG_c({ |
f93f4e46 | 3338 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
3339 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n", |
3340 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
3341 | RESTORE_NUMERIC_LOCAL(); |
3342 | }); | |
65202027 | 3343 | #else |
572bbb43 | 3344 | DEBUG_c({ |
f93f4e46 | 3345 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 3346 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%"NVgf")\n", |
1d7c1841 | 3347 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
3348 | RESTORE_NUMERIC_LOCAL(); |
3349 | }); | |
572bbb43 | 3350 | #endif |
463ee0b2 | 3351 | return SvNVX(sv); |
79072805 LW |
3352 | } |
3353 | ||
645c22ef DM |
3354 | /* asIV(): extract an integer from the string value of an SV. |
3355 | * Caller must validate PVX */ | |
3356 | ||
76e3520e | 3357 | STATIC IV |
cea2e8a9 | 3358 | S_asIV(pTHX_ SV *sv) |
36477c24 | 3359 | { |
c2988b20 NC |
3360 | UV value; |
3361 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
3362 | ||
3363 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
3364 | == IS_NUMBER_IN_UV) { | |
645c22ef | 3365 | /* It's definitely an integer */ |
c2988b20 NC |
3366 | if (numtype & IS_NUMBER_NEG) { |
3367 | if (value < (UV)IV_MIN) | |
3368 | return -(IV)value; | |
3369 | } else { | |
3370 | if (value < (UV)IV_MAX) | |
3371 | return (IV)value; | |
3372 | } | |
3373 | } | |
d008e5eb | 3374 | if (!numtype) { |
d008e5eb GS |
3375 | if (ckWARN(WARN_NUMERIC)) |
3376 | not_a_number(sv); | |
3377 | } | |
c2988b20 | 3378 | return I_V(Atof(SvPVX(sv))); |
36477c24 | 3379 | } |
3380 | ||
645c22ef DM |
3381 | /* asUV(): extract an unsigned integer from the string value of an SV |
3382 | * Caller must validate PVX */ | |
3383 | ||
76e3520e | 3384 | STATIC UV |
cea2e8a9 | 3385 | S_asUV(pTHX_ SV *sv) |
36477c24 | 3386 | { |
c2988b20 NC |
3387 | UV value; |
3388 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
36477c24 | 3389 | |
c2988b20 NC |
3390 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
3391 | == IS_NUMBER_IN_UV) { | |
645c22ef | 3392 | /* It's definitely an integer */ |
6fa402ec | 3393 | if (!(numtype & IS_NUMBER_NEG)) |
c2988b20 NC |
3394 | return value; |
3395 | } | |
d008e5eb | 3396 | if (!numtype) { |
d008e5eb GS |
3397 | if (ckWARN(WARN_NUMERIC)) |
3398 | not_a_number(sv); | |
3399 | } | |
097ee67d | 3400 | return U_V(Atof(SvPVX(sv))); |
36477c24 | 3401 | } |
3402 | ||
645c22ef DM |
3403 | /* |
3404 | =for apidoc sv_2pv_nolen | |
3405 | ||
3406 | Like C<sv_2pv()>, but doesn't return the length too. You should usually | |
3407 | use the macro wrapper C<SvPV_nolen(sv)> instead. | |
3408 | =cut | |
3409 | */ | |
3410 | ||
79072805 | 3411 | char * |
864dbfa3 | 3412 | Perl_sv_2pv_nolen(pTHX_ register SV *sv) |
1fa8b10d JD |
3413 | { |
3414 | STRLEN n_a; | |
3415 | return sv_2pv(sv, &n_a); | |
3416 | } | |
3417 | ||
645c22ef DM |
3418 | /* uiv_2buf(): private routine for use by sv_2pv_flags(): print an IV or |
3419 | * UV as a string towards the end of buf, and return pointers to start and | |
3420 | * end of it. | |
3421 | * | |
3422 | * We assume that buf is at least TYPE_CHARS(UV) long. | |
3423 | */ | |
3424 | ||
864dbfa3 | 3425 | static char * |
25da4f38 IZ |
3426 | uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob) |
3427 | { | |
25da4f38 IZ |
3428 | char *ptr = buf + TYPE_CHARS(UV); |
3429 | char *ebuf = ptr; | |
3430 | int sign; | |
25da4f38 IZ |
3431 | |
3432 | if (is_uv) | |
3433 | sign = 0; | |
3434 | else if (iv >= 0) { | |
3435 | uv = iv; | |
3436 | sign = 0; | |
3437 | } else { | |
3438 | uv = -iv; | |
3439 | sign = 1; | |
3440 | } | |
3441 | do { | |
eb160463 | 3442 | *--ptr = '0' + (char)(uv % 10); |
25da4f38 IZ |
3443 | } while (uv /= 10); |
3444 | if (sign) | |
3445 | *--ptr = '-'; | |
3446 | *peob = ebuf; | |
3447 | return ptr; | |
3448 | } | |
3449 | ||
09540bc3 JH |
3450 | /* sv_2pv() is now a macro using Perl_sv_2pv_flags(); |
3451 | * this function provided for binary compatibility only | |
3452 | */ | |
3453 | ||
3454 | char * | |
3455 | Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp) | |
3456 | { | |
3457 | return sv_2pv_flags(sv, lp, SV_GMAGIC); | |
3458 | } | |
3459 | ||
645c22ef DM |
3460 | /* |
3461 | =for apidoc sv_2pv_flags | |
3462 | ||
ff276b08 | 3463 | Returns a pointer to the string value of an SV, and sets *lp to its length. |
645c22ef DM |
3464 | If flags includes SV_GMAGIC, does an mg_get() first. Coerces sv to a string |
3465 | if necessary. | |
3466 | Normally invoked via the C<SvPV_flags> macro. C<sv_2pv()> and C<sv_2pv_nomg> | |
3467 | usually end up here too. | |
3468 | ||
3469 | =cut | |
3470 | */ | |
3471 | ||
8d6d96c1 HS |
3472 | char * |
3473 | Perl_sv_2pv_flags(pTHX_ register SV *sv, STRLEN *lp, I32 flags) | |
3474 | { | |
79072805 LW |
3475 | register char *s; |
3476 | int olderrno; | |
cb50f42d | 3477 | SV *tsv, *origsv; |
25da4f38 IZ |
3478 | char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */ |
3479 | char *tmpbuf = tbuf; | |
79072805 | 3480 | |
463ee0b2 LW |
3481 | if (!sv) { |
3482 | *lp = 0; | |
73d840c0 | 3483 | return (char *)""; |
463ee0b2 | 3484 | } |
8990e307 | 3485 | if (SvGMAGICAL(sv)) { |
8d6d96c1 HS |
3486 | if (flags & SV_GMAGIC) |
3487 | mg_get(sv); | |
463ee0b2 LW |
3488 | if (SvPOKp(sv)) { |
3489 | *lp = SvCUR(sv); | |
3490 | return SvPVX(sv); | |
3491 | } | |
cf2093f6 | 3492 | if (SvIOKp(sv)) { |
1c846c1f | 3493 | if (SvIsUV(sv)) |
57def98f | 3494 | (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv)); |
cf2093f6 | 3495 | else |
57def98f | 3496 | (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv)); |
46fc3d4c | 3497 | tsv = Nullsv; |
a0d0e21e | 3498 | goto tokensave; |
463ee0b2 LW |
3499 | } |
3500 | if (SvNOKp(sv)) { | |
2d4389e4 | 3501 | Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf); |
46fc3d4c | 3502 | tsv = Nullsv; |
a0d0e21e | 3503 | goto tokensave; |
463ee0b2 | 3504 | } |
16d20bd9 | 3505 | if (!SvROK(sv)) { |
d008e5eb | 3506 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 3507 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 3508 | report_uninit(sv); |
c6ee37c5 | 3509 | } |
16d20bd9 | 3510 | *lp = 0; |
73d840c0 | 3511 | return (char *)""; |
16d20bd9 | 3512 | } |
463ee0b2 | 3513 | } |
ed6116ce LW |
3514 | if (SvTHINKFIRST(sv)) { |
3515 | if (SvROK(sv)) { | |
a0d0e21e | 3516 | SV* tmpstr; |
e1ec3a88 | 3517 | register const char *typestr; |
1554e226 | 3518 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) && |
b4b9a328 | 3519 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) { |
446eaa42 YST |
3520 | char *pv = SvPV(tmpstr, *lp); |
3521 | if (SvUTF8(tmpstr)) | |
3522 | SvUTF8_on(sv); | |
3523 | else | |
3524 | SvUTF8_off(sv); | |
3525 | return pv; | |
3526 | } | |
cb50f42d | 3527 | origsv = sv; |
ed6116ce LW |
3528 | sv = (SV*)SvRV(sv); |
3529 | if (!sv) | |
e1ec3a88 | 3530 | typestr = "NULLREF"; |
ed6116ce | 3531 | else { |
f9277f47 IZ |
3532 | MAGIC *mg; |
3533 | ||
ed6116ce | 3534 | switch (SvTYPE(sv)) { |
f9277f47 IZ |
3535 | case SVt_PVMG: |
3536 | if ( ((SvFLAGS(sv) & | |
1c846c1f | 3537 | (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG)) |
faf82a0b | 3538 | == (SVs_OBJECT|SVs_SMG)) |
14befaf4 | 3539 | && (mg = mg_find(sv, PERL_MAGIC_qr))) { |
e1ec3a88 | 3540 | const regexp *re = (regexp *)mg->mg_obj; |
1bd3ad17 | 3541 | |
2cd61cdb | 3542 | if (!mg->mg_ptr) { |
e1ec3a88 | 3543 | const char *fptr = "msix"; |
8782bef2 GB |
3544 | char reflags[6]; |
3545 | char ch; | |
3546 | int left = 0; | |
3547 | int right = 4; | |
ff385a1b | 3548 | char need_newline = 0; |
eb160463 | 3549 | U16 reganch = (U16)((re->reganch & PMf_COMPILETIME) >> 12); |
8782bef2 | 3550 | |
155aba94 | 3551 | while((ch = *fptr++)) { |
8782bef2 GB |
3552 | if(reganch & 1) { |
3553 | reflags[left++] = ch; | |
3554 | } | |
3555 | else { | |
3556 | reflags[right--] = ch; | |
3557 | } | |
3558 | reganch >>= 1; | |
3559 | } | |
3560 | if(left != 4) { | |
3561 | reflags[left] = '-'; | |
3562 | left = 5; | |
3563 | } | |
3564 | ||
3565 | mg->mg_len = re->prelen + 4 + left; | |
ff385a1b JF |
3566 | /* |
3567 | * If /x was used, we have to worry about a regex | |
3568 | * ending with a comment later being embedded | |
3569 | * within another regex. If so, we don't want this | |
3570 | * regex's "commentization" to leak out to the | |
3571 | * right part of the enclosing regex, we must cap | |
3572 | * it with a newline. | |
3573 | * | |
3574 | * So, if /x was used, we scan backwards from the | |
3575 | * end of the regex. If we find a '#' before we | |
3576 | * find a newline, we need to add a newline | |
3577 | * ourself. If we find a '\n' first (or if we | |
3578 | * don't find '#' or '\n'), we don't need to add | |
3579 | * anything. -jfriedl | |
3580 | */ | |
3581 | if (PMf_EXTENDED & re->reganch) | |
3582 | { | |
e1ec3a88 | 3583 | const char *endptr = re->precomp + re->prelen; |
ff385a1b JF |
3584 | while (endptr >= re->precomp) |
3585 | { | |
e1ec3a88 | 3586 | const char c = *(endptr--); |
ff385a1b JF |
3587 | if (c == '\n') |
3588 | break; /* don't need another */ | |
3589 | if (c == '#') { | |
3590 | /* we end while in a comment, so we | |
3591 | need a newline */ | |
3592 | mg->mg_len++; /* save space for it */ | |
3593 | need_newline = 1; /* note to add it */ | |
ab01544f | 3594 | break; |
ff385a1b JF |
3595 | } |
3596 | } | |
3597 | } | |
3598 | ||
8782bef2 GB |
3599 | New(616, mg->mg_ptr, mg->mg_len + 1 + left, char); |
3600 | Copy("(?", mg->mg_ptr, 2, char); | |
3601 | Copy(reflags, mg->mg_ptr+2, left, char); | |
3602 | Copy(":", mg->mg_ptr+left+2, 1, char); | |
3603 | Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char); | |
ff385a1b JF |
3604 | if (need_newline) |
3605 | mg->mg_ptr[mg->mg_len - 2] = '\n'; | |
1bd3ad17 IZ |
3606 | mg->mg_ptr[mg->mg_len - 1] = ')'; |
3607 | mg->mg_ptr[mg->mg_len] = 0; | |
3608 | } | |
3280af22 | 3609 | PL_reginterp_cnt += re->program[0].next_off; |
cb50f42d YST |
3610 | |
3611 | if (re->reganch & ROPT_UTF8) | |
3612 | SvUTF8_on(origsv); | |
3613 | else | |
3614 | SvUTF8_off(origsv); | |
1bd3ad17 IZ |
3615 | *lp = mg->mg_len; |
3616 | return mg->mg_ptr; | |
f9277f47 IZ |
3617 | } |
3618 | /* Fall through */ | |
ed6116ce LW |
3619 | case SVt_NULL: |
3620 | case SVt_IV: | |
3621 | case SVt_NV: | |
3622 | case SVt_RV: | |
3623 | case SVt_PV: | |
3624 | case SVt_PVIV: | |
3625 | case SVt_PVNV: | |
e1ec3a88 AL |
3626 | case SVt_PVBM: typestr = SvROK(sv) ? "REF" : "SCALAR"; break; |
3627 | case SVt_PVLV: typestr = SvROK(sv) ? "REF" | |
be65207d DM |
3628 | /* tied lvalues should appear to be |
3629 | * scalars for backwards compatitbility */ | |
3630 | : (LvTYPE(sv) == 't' || LvTYPE(sv) == 'T') | |
3631 | ? "SCALAR" : "LVALUE"; break; | |
e1ec3a88 AL |
3632 | case SVt_PVAV: typestr = "ARRAY"; break; |
3633 | case SVt_PVHV: typestr = "HASH"; break; | |
3634 | case SVt_PVCV: typestr = "CODE"; break; | |
3635 | case SVt_PVGV: typestr = "GLOB"; break; | |
3636 | case SVt_PVFM: typestr = "FORMAT"; break; | |
3637 | case SVt_PVIO: typestr = "IO"; break; | |
3638 | default: typestr = "UNKNOWN"; break; | |
ed6116ce | 3639 | } |
46fc3d4c | 3640 | tsv = NEWSV(0,0); |
a5cb6b62 NC |
3641 | if (SvOBJECT(sv)) { |
3642 | const char *name = HvNAME(SvSTASH(sv)); | |
3643 | Perl_sv_setpvf(aTHX_ tsv, "%s=%s(0x%"UVxf")", | |
e1ec3a88 | 3644 | name ? name : "__ANON__" , typestr, PTR2UV(sv)); |
a5cb6b62 | 3645 | } |
ed6116ce | 3646 | else |
e1ec3a88 | 3647 | Perl_sv_setpvf(aTHX_ tsv, "%s(0x%"UVxf")", typestr, PTR2UV(sv)); |
a0d0e21e | 3648 | goto tokensaveref; |
463ee0b2 | 3649 | } |
e1ec3a88 | 3650 | *lp = strlen(typestr); |
73d840c0 | 3651 | return (char *)typestr; |
79072805 | 3652 | } |
0336b60e | 3653 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 3654 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 3655 | report_uninit(sv); |
ed6116ce | 3656 | *lp = 0; |
73d840c0 | 3657 | return (char *)""; |
79072805 | 3658 | } |
79072805 | 3659 | } |
28e5dec8 JH |
3660 | if (SvIOK(sv) || ((SvIOKp(sv) && !SvNOKp(sv)))) { |
3661 | /* I'm assuming that if both IV and NV are equally valid then | |
3662 | converting the IV is going to be more efficient */ | |
e1ec3a88 AL |
3663 | const U32 isIOK = SvIOK(sv); |
3664 | const U32 isUIOK = SvIsUV(sv); | |
28e5dec8 JH |
3665 | char buf[TYPE_CHARS(UV)]; |
3666 | char *ebuf, *ptr; | |
3667 | ||
3668 | if (SvTYPE(sv) < SVt_PVIV) | |
3669 | sv_upgrade(sv, SVt_PVIV); | |
3670 | if (isUIOK) | |
3671 | ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf); | |
3672 | else | |
3673 | ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf); | |
eb160463 | 3674 | SvGROW(sv, (STRLEN)(ebuf - ptr + 1)); /* inlined from sv_setpvn */ |
28e5dec8 JH |
3675 | Move(ptr,SvPVX(sv),ebuf - ptr,char); |
3676 | SvCUR_set(sv, ebuf - ptr); | |
3677 | s = SvEND(sv); | |
3678 | *s = '\0'; | |
3679 | if (isIOK) | |
3680 | SvIOK_on(sv); | |
3681 | else | |
3682 | SvIOKp_on(sv); | |
3683 | if (isUIOK) | |
3684 | SvIsUV_on(sv); | |
3685 | } | |
3686 | else if (SvNOKp(sv)) { | |
79072805 LW |
3687 | if (SvTYPE(sv) < SVt_PVNV) |
3688 | sv_upgrade(sv, SVt_PVNV); | |
1c846c1f | 3689 | /* The +20 is pure guesswork. Configure test needed. --jhi */ |
59155cc0 | 3690 | SvGROW(sv, NV_DIG + 20); |
463ee0b2 | 3691 | s = SvPVX(sv); |
79072805 | 3692 | olderrno = errno; /* some Xenix systems wipe out errno here */ |
79072805 | 3693 | #ifdef apollo |
463ee0b2 | 3694 | if (SvNVX(sv) == 0.0) |
79072805 LW |
3695 | (void)strcpy(s,"0"); |
3696 | else | |
3697 | #endif /*apollo*/ | |
bbce6d69 | 3698 | { |
2d4389e4 | 3699 | Gconvert(SvNVX(sv), NV_DIG, 0, s); |
bbce6d69 | 3700 | } |
79072805 | 3701 | errno = olderrno; |
a0d0e21e LW |
3702 | #ifdef FIXNEGATIVEZERO |
3703 | if (*s == '-' && s[1] == '0' && !s[2]) | |
3704 | strcpy(s,"0"); | |
3705 | #endif | |
79072805 LW |
3706 | while (*s) s++; |
3707 | #ifdef hcx | |
3708 | if (s[-1] == '.') | |
46fc3d4c | 3709 | *--s = '\0'; |
79072805 LW |
3710 | #endif |
3711 | } | |
79072805 | 3712 | else { |
0336b60e IZ |
3713 | if (ckWARN(WARN_UNINITIALIZED) |
3714 | && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) | |
29489e7c | 3715 | report_uninit(sv); |
a0d0e21e | 3716 | *lp = 0; |
25da4f38 IZ |
3717 | if (SvTYPE(sv) < SVt_PV) |
3718 | /* Typically the caller expects that sv_any is not NULL now. */ | |
3719 | sv_upgrade(sv, SVt_PV); | |
73d840c0 | 3720 | return (char *)""; |
79072805 | 3721 | } |
463ee0b2 LW |
3722 | *lp = s - SvPVX(sv); |
3723 | SvCUR_set(sv, *lp); | |
79072805 | 3724 | SvPOK_on(sv); |
1d7c1841 GS |
3725 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
3726 | PTR2UV(sv),SvPVX(sv))); | |
463ee0b2 | 3727 | return SvPVX(sv); |
a0d0e21e LW |
3728 | |
3729 | tokensave: | |
3730 | if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */ | |
3731 | /* Sneaky stuff here */ | |
3732 | ||
3733 | tokensaveref: | |
46fc3d4c | 3734 | if (!tsv) |
96827780 | 3735 | tsv = newSVpv(tmpbuf, 0); |
46fc3d4c | 3736 | sv_2mortal(tsv); |
3737 | *lp = SvCUR(tsv); | |
3738 | return SvPVX(tsv); | |
a0d0e21e LW |
3739 | } |
3740 | else { | |
3741 | STRLEN len; | |
73d840c0 | 3742 | const char *t; |
46fc3d4c | 3743 | |
3744 | if (tsv) { | |
3745 | sv_2mortal(tsv); | |
3746 | t = SvPVX(tsv); | |
3747 | len = SvCUR(tsv); | |
3748 | } | |
3749 | else { | |
96827780 MB |
3750 | t = tmpbuf; |
3751 | len = strlen(tmpbuf); | |
46fc3d4c | 3752 | } |
a0d0e21e | 3753 | #ifdef FIXNEGATIVEZERO |
46fc3d4c | 3754 | if (len == 2 && t[0] == '-' && t[1] == '0') { |
3755 | t = "0"; | |
3756 | len = 1; | |
3757 | } | |
a0d0e21e LW |
3758 | #endif |
3759 | (void)SvUPGRADE(sv, SVt_PV); | |
46fc3d4c | 3760 | *lp = len; |
a0d0e21e LW |
3761 | s = SvGROW(sv, len + 1); |
3762 | SvCUR_set(sv, len); | |
6bf554b4 | 3763 | SvPOKp_on(sv); |
e90e2364 | 3764 | return strcpy(s, t); |
a0d0e21e | 3765 | } |
463ee0b2 LW |
3766 | } |
3767 | ||
645c22ef | 3768 | /* |
6050d10e JP |
3769 | =for apidoc sv_copypv |
3770 | ||
3771 | Copies a stringified representation of the source SV into the | |
3772 | destination SV. Automatically performs any necessary mg_get and | |
54f0641b | 3773 | coercion of numeric values into strings. Guaranteed to preserve |
6050d10e | 3774 | UTF-8 flag even from overloaded objects. Similar in nature to |
54f0641b NIS |
3775 | sv_2pv[_flags] but operates directly on an SV instead of just the |
3776 | string. Mostly uses sv_2pv_flags to do its work, except when that | |
6050d10e JP |
3777 | would lose the UTF-8'ness of the PV. |
3778 | ||
3779 | =cut | |
3780 | */ | |
3781 | ||
3782 | void | |
3783 | Perl_sv_copypv(pTHX_ SV *dsv, register SV *ssv) | |
3784 | { | |
446eaa42 YST |
3785 | STRLEN len; |
3786 | char *s; | |
3787 | s = SvPV(ssv,len); | |
cb50f42d | 3788 | sv_setpvn(dsv,s,len); |
446eaa42 | 3789 | if (SvUTF8(ssv)) |
cb50f42d | 3790 | SvUTF8_on(dsv); |
446eaa42 | 3791 | else |
cb50f42d | 3792 | SvUTF8_off(dsv); |
6050d10e JP |
3793 | } |
3794 | ||
3795 | /* | |
645c22ef DM |
3796 | =for apidoc sv_2pvbyte_nolen |
3797 | ||
3798 | Return a pointer to the byte-encoded representation of the SV. | |
1e54db1a | 3799 | May cause the SV to be downgraded from UTF-8 as a side-effect. |
645c22ef DM |
3800 | |
3801 | Usually accessed via the C<SvPVbyte_nolen> macro. | |
3802 | ||
3803 | =cut | |
3804 | */ | |
3805 | ||
7340a771 GS |
3806 | char * |
3807 | Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv) | |
3808 | { | |
560a288e GS |
3809 | STRLEN n_a; |
3810 | return sv_2pvbyte(sv, &n_a); | |
7340a771 GS |
3811 | } |
3812 | ||
645c22ef DM |
3813 | /* |
3814 | =for apidoc sv_2pvbyte | |
3815 | ||
3816 | Return a pointer to the byte-encoded representation of the SV, and set *lp | |
1e54db1a | 3817 | to its length. May cause the SV to be downgraded from UTF-8 as a |
645c22ef DM |
3818 | side-effect. |
3819 | ||
3820 | Usually accessed via the C<SvPVbyte> macro. | |
3821 | ||
3822 | =cut | |
3823 | */ | |
3824 | ||
7340a771 GS |
3825 | char * |
3826 | Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp) | |
3827 | { | |
0875d2fe NIS |
3828 | sv_utf8_downgrade(sv,0); |
3829 | return SvPV(sv,*lp); | |
7340a771 GS |
3830 | } |
3831 | ||
645c22ef DM |
3832 | /* |
3833 | =for apidoc sv_2pvutf8_nolen | |
3834 | ||
1e54db1a JH |
3835 | Return a pointer to the UTF-8-encoded representation of the SV. |
3836 | May cause the SV to be upgraded to UTF-8 as a side-effect. | |
645c22ef DM |
3837 | |
3838 | Usually accessed via the C<SvPVutf8_nolen> macro. | |
3839 | ||
3840 | =cut | |
3841 | */ | |
3842 | ||
7340a771 GS |
3843 | char * |
3844 | Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv) | |
3845 | { | |
560a288e GS |
3846 | STRLEN n_a; |
3847 | return sv_2pvutf8(sv, &n_a); | |
7340a771 GS |
3848 | } |
3849 | ||
645c22ef DM |
3850 | /* |
3851 | =for apidoc sv_2pvutf8 | |
3852 | ||
1e54db1a JH |
3853 | Return a pointer to the UTF-8-encoded representation of the SV, and set *lp |
3854 | to its length. May cause the SV to be upgraded to UTF-8 as a side-effect. | |
645c22ef DM |
3855 | |
3856 | Usually accessed via the C<SvPVutf8> macro. | |
3857 | ||
3858 | =cut | |
3859 | */ | |
3860 | ||
7340a771 GS |
3861 | char * |
3862 | Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp) | |
3863 | { | |
560a288e | 3864 | sv_utf8_upgrade(sv); |
7d59b7e4 | 3865 | return SvPV(sv,*lp); |
7340a771 | 3866 | } |
1c846c1f | 3867 | |
645c22ef DM |
3868 | /* |
3869 | =for apidoc sv_2bool | |
3870 | ||
3871 | This function is only called on magical items, and is only used by | |
8cf8f3d1 | 3872 | sv_true() or its macro equivalent. |
645c22ef DM |
3873 | |
3874 | =cut | |
3875 | */ | |
3876 | ||
463ee0b2 | 3877 | bool |
864dbfa3 | 3878 | Perl_sv_2bool(pTHX_ register SV *sv) |
463ee0b2 | 3879 | { |
8990e307 | 3880 | if (SvGMAGICAL(sv)) |
463ee0b2 LW |
3881 | mg_get(sv); |
3882 | ||
a0d0e21e LW |
3883 | if (!SvOK(sv)) |
3884 | return 0; | |
3885 | if (SvROK(sv)) { | |
a0d0e21e | 3886 | SV* tmpsv; |
1554e226 | 3887 | if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) && |
9e3013b1 | 3888 | (!SvROK(tmpsv) || (SvRV(tmpsv) != SvRV(sv)))) |
8a31060d | 3889 | return (bool)SvTRUE(tmpsv); |
a0d0e21e LW |
3890 | return SvRV(sv) != 0; |
3891 | } | |
463ee0b2 | 3892 | if (SvPOKp(sv)) { |
11343788 MB |
3893 | register XPV* Xpvtmp; |
3894 | if ((Xpvtmp = (XPV*)SvANY(sv)) && | |
3895 | (*Xpvtmp->xpv_pv > '0' || | |
3896 | Xpvtmp->xpv_cur > 1 || | |
3897 | (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0'))) | |
463ee0b2 LW |
3898 | return 1; |
3899 | else | |
3900 | return 0; | |
3901 | } | |
3902 | else { | |
3903 | if (SvIOKp(sv)) | |
3904 | return SvIVX(sv) != 0; | |
3905 | else { | |
3906 | if (SvNOKp(sv)) | |
3907 | return SvNVX(sv) != 0.0; | |
3908 | else | |
3909 | return FALSE; | |
3910 | } | |
3911 | } | |
79072805 LW |
3912 | } |
3913 | ||
09540bc3 JH |
3914 | /* sv_utf8_upgrade() is now a macro using sv_utf8_upgrade_flags(); |
3915 | * this function provided for binary compatibility only | |
3916 | */ | |
3917 | ||
3918 | ||
3919 | STRLEN | |
3920 | Perl_sv_utf8_upgrade(pTHX_ register SV *sv) | |
3921 | { | |
3922 | return sv_utf8_upgrade_flags(sv, SV_GMAGIC); | |
3923 | } | |
3924 | ||
c461cf8f JH |
3925 | /* |
3926 | =for apidoc sv_utf8_upgrade | |
3927 | ||
78ea37eb | 3928 | Converts the PV of an SV to its UTF-8-encoded form. |
645c22ef | 3929 | Forces the SV to string form if it is not already. |
4411f3b6 NIS |
3930 | Always sets the SvUTF8 flag to avoid future validity checks even |
3931 | if all the bytes have hibit clear. | |
c461cf8f | 3932 | |
13a6c0e0 JH |
3933 | This is not as a general purpose byte encoding to Unicode interface: |
3934 | use the Encode extension for that. | |
3935 | ||
8d6d96c1 HS |
3936 | =for apidoc sv_utf8_upgrade_flags |
3937 | ||
78ea37eb | 3938 | Converts the PV of an SV to its UTF-8-encoded form. |
645c22ef | 3939 | Forces the SV to string form if it is not already. |
8d6d96c1 HS |
3940 | Always sets the SvUTF8 flag to avoid future validity checks even |
3941 | if all the bytes have hibit clear. If C<flags> has C<SV_GMAGIC> bit set, | |
3942 | will C<mg_get> on C<sv> if appropriate, else not. C<sv_utf8_upgrade> and | |
3943 | C<sv_utf8_upgrade_nomg> are implemented in terms of this function. | |
3944 | ||
13a6c0e0 JH |
3945 | This is not as a general purpose byte encoding to Unicode interface: |
3946 | use the Encode extension for that. | |
3947 | ||
8d6d96c1 HS |
3948 | =cut |
3949 | */ | |
3950 | ||
3951 | STRLEN | |
3952 | Perl_sv_utf8_upgrade_flags(pTHX_ register SV *sv, I32 flags) | |
3953 | { | |
db42d148 | 3954 | U8 *s, *t, *e; |
511c2ff0 | 3955 | int hibit = 0; |
560a288e | 3956 | |
808c356f RGS |
3957 | if (sv == &PL_sv_undef) |
3958 | return 0; | |
e0e62c2a NIS |
3959 | if (!SvPOK(sv)) { |
3960 | STRLEN len = 0; | |
d52b7888 NC |
3961 | if (SvREADONLY(sv) && (SvPOKp(sv) || SvIOKp(sv) || SvNOKp(sv))) { |
3962 | (void) sv_2pv_flags(sv,&len, flags); | |
3963 | if (SvUTF8(sv)) | |
3964 | return len; | |
3965 | } else { | |
3966 | (void) SvPV_force(sv,len); | |
3967 | } | |
e0e62c2a | 3968 | } |
4411f3b6 | 3969 | |
f5cee72b | 3970 | if (SvUTF8(sv)) { |
5fec3b1d | 3971 | return SvCUR(sv); |
f5cee72b | 3972 | } |
5fec3b1d | 3973 | |
765f542d NC |
3974 | if (SvIsCOW(sv)) { |
3975 | sv_force_normal_flags(sv, 0); | |
db42d148 NIS |
3976 | } |
3977 | ||
88632417 | 3978 | if (PL_encoding && !(flags & SV_UTF8_NO_ENCODING)) |
799ef3cb | 3979 | sv_recode_to_utf8(sv, PL_encoding); |
9f4817db | 3980 | else { /* Assume Latin-1/EBCDIC */ |
0a378802 JH |
3981 | /* This function could be much more efficient if we |
3982 | * had a FLAG in SVs to signal if there are any hibit | |
3983 | * chars in the PV. Given that there isn't such a flag | |
3984 | * make the loop as fast as possible. */ | |
3985 | s = (U8 *) SvPVX(sv); | |
3986 | e = (U8 *) SvEND(sv); | |
3987 | t = s; | |
3988 | while (t < e) { | |
3989 | U8 ch = *t++; | |
3990 | if ((hibit = !NATIVE_IS_INVARIANT(ch))) | |
3991 | break; | |
3992 | } | |
3993 | if (hibit) { | |
3994 | STRLEN len; | |
cc2578a4 | 3995 | (void)SvOOK_off(sv); |
06a45632 | 3996 | s = (U8*)SvPVX(sv); |
0a378802 JH |
3997 | len = SvCUR(sv) + 1; /* Plus the \0 */ |
3998 | SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len); | |
3999 | SvCUR(sv) = len - 1; | |
4000 | if (SvLEN(sv) != 0) | |
4001 | Safefree(s); /* No longer using what was there before. */ | |
4002 | SvLEN(sv) = len; /* No longer know the real size. */ | |
4003 | } | |
9f4817db JH |
4004 | /* Mark as UTF-8 even if no hibit - saves scanning loop */ |
4005 | SvUTF8_on(sv); | |
560a288e | 4006 | } |
4411f3b6 | 4007 | return SvCUR(sv); |
560a288e GS |
4008 | } |
4009 | ||
c461cf8f JH |
4010 | /* |
4011 | =for apidoc sv_utf8_downgrade | |
4012 | ||
78ea37eb TS |
4013 | Attempts to convert the PV of an SV from characters to bytes. |
4014 | If the PV contains a character beyond byte, this conversion will fail; | |
4015 | in this case, either returns false or, if C<fail_ok> is not | |
c461cf8f JH |
4016 | true, croaks. |
4017 | ||
13a6c0e0 JH |
4018 | This is not as a general purpose Unicode to byte encoding interface: |
4019 | use the Encode extension for that. | |
4020 | ||
c461cf8f JH |
4021 | =cut |
4022 | */ | |
4023 | ||
560a288e GS |
4024 | bool |
4025 | Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok) | |
4026 | { | |
78ea37eb | 4027 | if (SvPOKp(sv) && SvUTF8(sv)) { |
fa301091 | 4028 | if (SvCUR(sv)) { |
03cfe0ae | 4029 | U8 *s; |
652088fc | 4030 | STRLEN len; |
fa301091 | 4031 | |
765f542d NC |
4032 | if (SvIsCOW(sv)) { |
4033 | sv_force_normal_flags(sv, 0); | |
4034 | } | |
03cfe0ae NIS |
4035 | s = (U8 *) SvPV(sv, len); |
4036 | if (!utf8_to_bytes(s, &len)) { | |
fa301091 JH |
4037 | if (fail_ok) |
4038 | return FALSE; | |
4039 | else { | |
4040 | if (PL_op) | |
4041 | Perl_croak(aTHX_ "Wide character in %s", | |
53e06cf0 | 4042 | OP_DESC(PL_op)); |
fa301091 JH |
4043 | else |
4044 | Perl_croak(aTHX_ "Wide character"); | |
4045 | } | |
4b3603a4 | 4046 | } |
fa301091 | 4047 | SvCUR(sv) = len; |
67e989fb | 4048 | } |
560a288e | 4049 | } |
ffebcc3e | 4050 | SvUTF8_off(sv); |
560a288e GS |
4051 | return TRUE; |
4052 | } | |
4053 | ||
c461cf8f JH |
4054 | /* |
4055 | =for apidoc sv_utf8_encode | |
4056 | ||
78ea37eb TS |
4057 | Converts the PV of an SV to UTF-8, but then turns the C<SvUTF8> |
4058 | flag off so that it looks like octets again. | |
c461cf8f JH |
4059 | |
4060 | =cut | |
4061 | */ | |
4062 | ||
560a288e GS |
4063 | void |
4064 | Perl_sv_utf8_encode(pTHX_ register SV *sv) | |
4065 | { | |
4411f3b6 | 4066 | (void) sv_utf8_upgrade(sv); |
4c94c214 NC |
4067 | if (SvIsCOW(sv)) { |
4068 | sv_force_normal_flags(sv, 0); | |
4069 | } | |
4070 | if (SvREADONLY(sv)) { | |
4071 | Perl_croak(aTHX_ PL_no_modify); | |
4072 | } | |
560a288e GS |
4073 | SvUTF8_off(sv); |
4074 | } | |
4075 | ||
4411f3b6 NIS |
4076 | /* |
4077 | =for apidoc sv_utf8_decode | |
4078 | ||
78ea37eb TS |
4079 | If the PV of the SV is an octet sequence in UTF-8 |
4080 | and contains a multiple-byte character, the C<SvUTF8> flag is turned on | |
4081 | so that it looks like a character. If the PV contains only single-byte | |
4082 | characters, the C<SvUTF8> flag stays being off. | |
4083 | Scans PV for validity and returns false if the PV is invalid UTF-8. | |
4411f3b6 NIS |
4084 | |
4085 | =cut | |
4086 | */ | |
4087 | ||
560a288e GS |
4088 | bool |
4089 | Perl_sv_utf8_decode(pTHX_ register SV *sv) | |
4090 | { | |
78ea37eb | 4091 | if (SvPOKp(sv)) { |
63cd0674 NIS |
4092 | U8 *c; |
4093 | U8 *e; | |
9cbac4c7 | 4094 | |
645c22ef DM |
4095 | /* The octets may have got themselves encoded - get them back as |
4096 | * bytes | |
4097 | */ | |
4098 | if (!sv_utf8_downgrade(sv, TRUE)) | |
560a288e GS |
4099 | return FALSE; |
4100 | ||
4101 | /* it is actually just a matter of turning the utf8 flag on, but | |
4102 | * we want to make sure everything inside is valid utf8 first. | |
4103 | */ | |
63cd0674 NIS |
4104 | c = (U8 *) SvPVX(sv); |
4105 | if (!is_utf8_string(c, SvCUR(sv)+1)) | |
67e989fb | 4106 | return FALSE; |
63cd0674 | 4107 | e = (U8 *) SvEND(sv); |
511c2ff0 | 4108 | while (c < e) { |
c4d5f83a NIS |
4109 | U8 ch = *c++; |
4110 | if (!UTF8_IS_INVARIANT(ch)) { | |
67e989fb JH |
4111 | SvUTF8_on(sv); |
4112 | break; | |
4113 | } | |
560a288e | 4114 | } |
560a288e GS |
4115 | } |
4116 | return TRUE; | |
4117 | } | |
4118 | ||
09540bc3 JH |
4119 | /* sv_setsv() is now a macro using Perl_sv_setsv_flags(); |
4120 | * this function provided for binary compatibility only | |
4121 | */ | |
4122 | ||
4123 | void | |
4124 | Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr) | |
4125 | { | |
4126 | sv_setsv_flags(dstr, sstr, SV_GMAGIC); | |
4127 | } | |
4128 | ||
954c1994 GS |
4129 | /* |
4130 | =for apidoc sv_setsv | |
4131 | ||
645c22ef DM |
4132 | Copies the contents of the source SV C<ssv> into the destination SV |
4133 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
4134 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
4135 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
4136 | content of the destination. | |
4137 | ||
4138 | You probably want to use one of the assortment of wrappers, such as | |
4139 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
4140 | C<SvSetMagicSV_nosteal>. | |
4141 | ||
8d6d96c1 HS |
4142 | =for apidoc sv_setsv_flags |
4143 | ||
645c22ef DM |
4144 | Copies the contents of the source SV C<ssv> into the destination SV |
4145 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
4146 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
4147 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
4148 | content of the destination. | |
4149 | If the C<flags> parameter has the C<SV_GMAGIC> bit set, will C<mg_get> on | |
5fcdf167 NC |
4150 | C<ssv> if appropriate, else not. If the C<flags> parameter has the |
4151 | C<NOSTEAL> bit set then the buffers of temps will not be stolen. <sv_setsv> | |
4152 | and C<sv_setsv_nomg> are implemented in terms of this function. | |
645c22ef DM |
4153 | |
4154 | You probably want to use one of the assortment of wrappers, such as | |
4155 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
4156 | C<SvSetMagicSV_nosteal>. | |
4157 | ||
4158 | This is the primary function for copying scalars, and most other | |
4159 | copy-ish functions and macros use this underneath. | |
8d6d96c1 HS |
4160 | |
4161 | =cut | |
4162 | */ | |
4163 | ||
4164 | void | |
4165 | Perl_sv_setsv_flags(pTHX_ SV *dstr, register SV *sstr, I32 flags) | |
4166 | { | |
8990e307 LW |
4167 | register U32 sflags; |
4168 | register int dtype; | |
4169 | register int stype; | |
463ee0b2 | 4170 | |
79072805 LW |
4171 | if (sstr == dstr) |
4172 | return; | |
765f542d | 4173 | SV_CHECK_THINKFIRST_COW_DROP(dstr); |
79072805 | 4174 | if (!sstr) |
3280af22 | 4175 | sstr = &PL_sv_undef; |
8990e307 LW |
4176 | stype = SvTYPE(sstr); |
4177 | dtype = SvTYPE(dstr); | |
79072805 | 4178 | |
a0d0e21e | 4179 | SvAMAGIC_off(dstr); |
7a5fa8a2 | 4180 | if ( SvVOK(dstr) ) |
ece467f9 JP |
4181 | { |
4182 | /* need to nuke the magic */ | |
4183 | mg_free(dstr); | |
4184 | SvRMAGICAL_off(dstr); | |
4185 | } | |
9e7bc3e8 | 4186 | |
463ee0b2 | 4187 | /* There's a lot of redundancy below but we're going for speed here */ |
79072805 | 4188 | |
8990e307 | 4189 | switch (stype) { |
79072805 | 4190 | case SVt_NULL: |
aece5585 | 4191 | undef_sstr: |
20408e3c GS |
4192 | if (dtype != SVt_PVGV) { |
4193 | (void)SvOK_off(dstr); | |
4194 | return; | |
4195 | } | |
4196 | break; | |
463ee0b2 | 4197 | case SVt_IV: |
aece5585 GA |
4198 | if (SvIOK(sstr)) { |
4199 | switch (dtype) { | |
4200 | case SVt_NULL: | |
8990e307 | 4201 | sv_upgrade(dstr, SVt_IV); |
aece5585 GA |
4202 | break; |
4203 | case SVt_NV: | |
8990e307 | 4204 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 GA |
4205 | break; |
4206 | case SVt_RV: | |
4207 | case SVt_PV: | |
a0d0e21e | 4208 | sv_upgrade(dstr, SVt_PVIV); |
aece5585 GA |
4209 | break; |
4210 | } | |
4211 | (void)SvIOK_only(dstr); | |
4212 | SvIVX(dstr) = SvIVX(sstr); | |
25da4f38 IZ |
4213 | if (SvIsUV(sstr)) |
4214 | SvIsUV_on(dstr); | |
27c9684d AP |
4215 | if (SvTAINTED(sstr)) |
4216 | SvTAINT(dstr); | |
aece5585 | 4217 | return; |
8990e307 | 4218 | } |
aece5585 GA |
4219 | goto undef_sstr; |
4220 | ||
463ee0b2 | 4221 | case SVt_NV: |
aece5585 GA |
4222 | if (SvNOK(sstr)) { |
4223 | switch (dtype) { | |
4224 | case SVt_NULL: | |
4225 | case SVt_IV: | |
8990e307 | 4226 | sv_upgrade(dstr, SVt_NV); |
aece5585 GA |
4227 | break; |
4228 | case SVt_RV: | |
4229 | case SVt_PV: | |
4230 | case SVt_PVIV: | |
a0d0e21e | 4231 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 GA |
4232 | break; |
4233 | } | |
4234 | SvNVX(dstr) = SvNVX(sstr); | |
4235 | (void)SvNOK_only(dstr); | |
27c9684d AP |
4236 | if (SvTAINTED(sstr)) |
4237 | SvTAINT(dstr); | |
aece5585 | 4238 | return; |
8990e307 | 4239 | } |
aece5585 GA |
4240 | goto undef_sstr; |
4241 | ||
ed6116ce | 4242 | case SVt_RV: |
8990e307 | 4243 | if (dtype < SVt_RV) |
ed6116ce | 4244 | sv_upgrade(dstr, SVt_RV); |
c07a80fd | 4245 | else if (dtype == SVt_PVGV && |
23bb1b96 | 4246 | SvROK(sstr) && SvTYPE(SvRV(sstr)) == SVt_PVGV) { |
c07a80fd | 4247 | sstr = SvRV(sstr); |
a5f75d66 | 4248 | if (sstr == dstr) { |
1d7c1841 GS |
4249 | if (GvIMPORTED(dstr) != GVf_IMPORTED |
4250 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
4251 | { | |
a5f75d66 | 4252 | GvIMPORTED_on(dstr); |
1d7c1841 | 4253 | } |
a5f75d66 AD |
4254 | GvMULTI_on(dstr); |
4255 | return; | |
4256 | } | |
c07a80fd | 4257 | goto glob_assign; |
4258 | } | |
ed6116ce | 4259 | break; |
fc36a67e | 4260 | case SVt_PVFM: |
d89fc664 NC |
4261 | #ifdef PERL_COPY_ON_WRITE |
4262 | if ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS) { | |
4263 | if (dtype < SVt_PVIV) | |
4264 | sv_upgrade(dstr, SVt_PVIV); | |
4265 | break; | |
4266 | } | |
4267 | /* Fall through */ | |
4268 | #endif | |
4269 | case SVt_PV: | |
8990e307 | 4270 | if (dtype < SVt_PV) |
463ee0b2 | 4271 | sv_upgrade(dstr, SVt_PV); |
463ee0b2 LW |
4272 | break; |
4273 | case SVt_PVIV: | |
8990e307 | 4274 | if (dtype < SVt_PVIV) |
463ee0b2 | 4275 | sv_upgrade(dstr, SVt_PVIV); |
463ee0b2 LW |
4276 | break; |
4277 | case SVt_PVNV: | |
8990e307 | 4278 | if (dtype < SVt_PVNV) |
463ee0b2 | 4279 | sv_upgrade(dstr, SVt_PVNV); |
463ee0b2 | 4280 | break; |
4633a7c4 LW |
4281 | case SVt_PVAV: |
4282 | case SVt_PVHV: | |
4283 | case SVt_PVCV: | |
4633a7c4 | 4284 | case SVt_PVIO: |
533c011a | 4285 | if (PL_op) |
cea2e8a9 | 4286 | Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0), |
53e06cf0 | 4287 | OP_NAME(PL_op)); |
4633a7c4 | 4288 | else |
cea2e8a9 | 4289 | Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0)); |
4633a7c4 LW |
4290 | break; |
4291 | ||
79072805 | 4292 | case SVt_PVGV: |
8990e307 | 4293 | if (dtype <= SVt_PVGV) { |
c07a80fd | 4294 | glob_assign: |
a5f75d66 | 4295 | if (dtype != SVt_PVGV) { |
a0d0e21e LW |
4296 | char *name = GvNAME(sstr); |
4297 | STRLEN len = GvNAMELEN(sstr); | |
b76195c2 DM |
4298 | /* don't upgrade SVt_PVLV: it can hold a glob */ |
4299 | if (dtype != SVt_PVLV) | |
4300 | sv_upgrade(dstr, SVt_PVGV); | |
14befaf4 | 4301 | sv_magic(dstr, dstr, PERL_MAGIC_glob, Nullch, 0); |
85aff577 | 4302 | GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr)); |
a0d0e21e LW |
4303 | GvNAME(dstr) = savepvn(name, len); |
4304 | GvNAMELEN(dstr) = len; | |
4305 | SvFAKE_on(dstr); /* can coerce to non-glob */ | |
4306 | } | |
7bac28a0 | 4307 | /* ahem, death to those who redefine active sort subs */ |
3280af22 NIS |
4308 | else if (PL_curstackinfo->si_type == PERLSI_SORT |
4309 | && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr))) | |
cea2e8a9 | 4310 | Perl_croak(aTHX_ "Can't redefine active sort subroutine %s", |
7bac28a0 | 4311 | GvNAME(dstr)); |
5bd07a3d | 4312 | |
7fb37951 AMS |
4313 | #ifdef GV_UNIQUE_CHECK |
4314 | if (GvUNIQUE((GV*)dstr)) { | |
5bd07a3d DM |
4315 | Perl_croak(aTHX_ PL_no_modify); |
4316 | } | |
4317 | #endif | |
4318 | ||
a0d0e21e | 4319 | (void)SvOK_off(dstr); |
a5f75d66 | 4320 | GvINTRO_off(dstr); /* one-shot flag */ |
1edc1566 | 4321 | gp_free((GV*)dstr); |
79072805 | 4322 | GvGP(dstr) = gp_ref(GvGP(sstr)); |
27c9684d AP |
4323 | if (SvTAINTED(sstr)) |
4324 | SvTAINT(dstr); | |
1d7c1841 GS |
4325 | if (GvIMPORTED(dstr) != GVf_IMPORTED |
4326 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
4327 | { | |
a5f75d66 | 4328 | GvIMPORTED_on(dstr); |
1d7c1841 | 4329 | } |
a5f75d66 | 4330 | GvMULTI_on(dstr); |
79072805 LW |
4331 | return; |
4332 | } | |
4333 | /* FALL THROUGH */ | |
4334 | ||
4335 | default: | |
8d6d96c1 | 4336 | if (SvGMAGICAL(sstr) && (flags & SV_GMAGIC)) { |
973f89ab | 4337 | mg_get(sstr); |
eb160463 | 4338 | if ((int)SvTYPE(sstr) != stype) { |
973f89ab CS |
4339 | stype = SvTYPE(sstr); |
4340 | if (stype == SVt_PVGV && dtype <= SVt_PVGV) | |
4341 | goto glob_assign; | |
4342 | } | |
4343 | } | |
ded42b9f | 4344 | if (stype == SVt_PVLV) |
6fc92669 | 4345 | (void)SvUPGRADE(dstr, SVt_PVNV); |
ded42b9f | 4346 | else |
eb160463 | 4347 | (void)SvUPGRADE(dstr, (U32)stype); |
79072805 LW |
4348 | } |
4349 | ||
8990e307 LW |
4350 | sflags = SvFLAGS(sstr); |
4351 | ||
4352 | if (sflags & SVf_ROK) { | |
4353 | if (dtype >= SVt_PV) { | |
4354 | if (dtype == SVt_PVGV) { | |
4355 | SV *sref = SvREFCNT_inc(SvRV(sstr)); | |
4356 | SV *dref = 0; | |
a5f75d66 | 4357 | int intro = GvINTRO(dstr); |
a0d0e21e | 4358 | |
7fb37951 AMS |
4359 | #ifdef GV_UNIQUE_CHECK |
4360 | if (GvUNIQUE((GV*)dstr)) { | |
5bd07a3d DM |
4361 | Perl_croak(aTHX_ PL_no_modify); |
4362 | } | |
4363 | #endif | |
4364 | ||
a0d0e21e | 4365 | if (intro) { |
a5f75d66 | 4366 | GvINTRO_off(dstr); /* one-shot flag */ |
1d7c1841 | 4367 | GvLINE(dstr) = CopLINE(PL_curcop); |
1edc1566 | 4368 | GvEGV(dstr) = (GV*)dstr; |
a0d0e21e | 4369 | } |
a5f75d66 | 4370 | GvMULTI_on(dstr); |
8990e307 LW |
4371 | switch (SvTYPE(sref)) { |
4372 | case SVt_PVAV: | |
a0d0e21e | 4373 | if (intro) |
890ed176 | 4374 | SAVEGENERICSV(GvAV(dstr)); |
a0d0e21e LW |
4375 | else |
4376 | dref = (SV*)GvAV(dstr); | |
8990e307 | 4377 | GvAV(dstr) = (AV*)sref; |
39bac7f7 | 4378 | if (!GvIMPORTED_AV(dstr) |
1d7c1841 GS |
4379 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
4380 | { | |
a5f75d66 | 4381 | GvIMPORTED_AV_on(dstr); |
1d7c1841 | 4382 | } |
8990e307 LW |
4383 | break; |
4384 | case SVt_PVHV: | |
a0d0e21e | 4385 | if (intro) |
890ed176 | 4386 | SAVEGENERICSV(GvHV(dstr)); |
a0d0e21e LW |
4387 | else |
4388 | dref = (SV*)GvHV(dstr); | |
8990e307 | 4389 | GvHV(dstr) = (HV*)sref; |
39bac7f7 | 4390 | if (!GvIMPORTED_HV(dstr) |
1d7c1841 GS |
4391 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
4392 | { | |
a5f75d66 | 4393 | GvIMPORTED_HV_on(dstr); |
1d7c1841 | 4394 | } |
8990e307 LW |
4395 | break; |
4396 | case SVt_PVCV: | |
8ebc5c01 | 4397 | if (intro) { |
4398 | if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) { | |
4399 | SvREFCNT_dec(GvCV(dstr)); | |
4400 | GvCV(dstr) = Nullcv; | |
68dc0745 | 4401 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
3280af22 | 4402 | PL_sub_generation++; |
8ebc5c01 | 4403 | } |
890ed176 | 4404 | SAVEGENERICSV(GvCV(dstr)); |
8ebc5c01 | 4405 | } |
68dc0745 | 4406 | else |
4407 | dref = (SV*)GvCV(dstr); | |
4408 | if (GvCV(dstr) != (CV*)sref) { | |
748a9306 | 4409 | CV* cv = GvCV(dstr); |
4633a7c4 | 4410 | if (cv) { |
68dc0745 | 4411 | if (!GvCVGEN((GV*)dstr) && |
4412 | (CvROOT(cv) || CvXSUB(cv))) | |
4413 | { | |
7bac28a0 | 4414 | /* ahem, death to those who redefine |
4415 | * active sort subs */ | |
3280af22 NIS |
4416 | if (PL_curstackinfo->si_type == PERLSI_SORT && |
4417 | PL_sortcop == CvSTART(cv)) | |
1c846c1f | 4418 | Perl_croak(aTHX_ |
7bac28a0 | 4419 | "Can't redefine active sort subroutine %s", |
4420 | GvENAME((GV*)dstr)); | |
beab0874 JT |
4421 | /* Redefining a sub - warning is mandatory if |
4422 | it was a const and its value changed. */ | |
4423 | if (ckWARN(WARN_REDEFINE) | |
4424 | || (CvCONST(cv) | |
4425 | && (!CvCONST((CV*)sref) | |
4426 | || sv_cmp(cv_const_sv(cv), | |
4427 | cv_const_sv((CV*)sref))))) | |
4428 | { | |
9014280d | 4429 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
beab0874 | 4430 | CvCONST(cv) |
910764e6 RGS |
4431 | ? "Constant subroutine %s::%s redefined" |
4432 | : "Subroutine %s::%s redefined", | |
4433 | HvNAME(GvSTASH((GV*)dstr)), | |
beab0874 JT |
4434 | GvENAME((GV*)dstr)); |
4435 | } | |
9607fc9c | 4436 | } |
fb24441d RGS |
4437 | if (!intro) |
4438 | cv_ckproto(cv, (GV*)dstr, | |
4439 | SvPOK(sref) ? SvPVX(sref) : Nullch); | |
4633a7c4 | 4440 | } |
a5f75d66 | 4441 | GvCV(dstr) = (CV*)sref; |
7a4c00b4 | 4442 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
a5f75d66 | 4443 | GvASSUMECV_on(dstr); |
3280af22 | 4444 | PL_sub_generation++; |
a5f75d66 | 4445 | } |
39bac7f7 | 4446 | if (!GvIMPORTED_CV(dstr) |
1d7c1841 GS |
4447 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
4448 | { | |
a5f75d66 | 4449 | GvIMPORTED_CV_on(dstr); |
1d7c1841 | 4450 | } |
8990e307 | 4451 | break; |
91bba347 LW |
4452 | case SVt_PVIO: |
4453 | if (intro) | |
890ed176 | 4454 | SAVEGENERICSV(GvIOp(dstr)); |
91bba347 LW |
4455 | else |
4456 | dref = (SV*)GvIOp(dstr); | |
4457 | GvIOp(dstr) = (IO*)sref; | |
4458 | break; | |
f4d13ee9 JH |
4459 | case SVt_PVFM: |
4460 | if (intro) | |
890ed176 | 4461 | SAVEGENERICSV(GvFORM(dstr)); |
f4d13ee9 JH |
4462 | else |
4463 | dref = (SV*)GvFORM(dstr); | |
4464 | GvFORM(dstr) = (CV*)sref; | |
4465 | break; | |
8990e307 | 4466 | default: |
a0d0e21e | 4467 | if (intro) |
890ed176 | 4468 | SAVEGENERICSV(GvSV(dstr)); |
a0d0e21e LW |
4469 | else |
4470 | dref = (SV*)GvSV(dstr); | |
8990e307 | 4471 | GvSV(dstr) = sref; |
39bac7f7 | 4472 | if (!GvIMPORTED_SV(dstr) |
1d7c1841 GS |
4473 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
4474 | { | |
a5f75d66 | 4475 | GvIMPORTED_SV_on(dstr); |
1d7c1841 | 4476 | } |
8990e307 LW |
4477 | break; |
4478 | } | |
4479 | if (dref) | |
4480 | SvREFCNT_dec(dref); | |
27c9684d AP |
4481 | if (SvTAINTED(sstr)) |
4482 | SvTAINT(dstr); | |
8990e307 LW |
4483 | return; |
4484 | } | |
a0d0e21e | 4485 | if (SvPVX(dstr)) { |
760ac839 | 4486 | (void)SvOOK_off(dstr); /* backoff */ |
50483b2c JD |
4487 | if (SvLEN(dstr)) |
4488 | Safefree(SvPVX(dstr)); | |
a0d0e21e LW |
4489 | SvLEN(dstr)=SvCUR(dstr)=0; |
4490 | } | |
8990e307 | 4491 | } |
a0d0e21e | 4492 | (void)SvOK_off(dstr); |
8990e307 | 4493 | SvRV(dstr) = SvREFCNT_inc(SvRV(sstr)); |
ed6116ce | 4494 | SvROK_on(dstr); |
8990e307 | 4495 | if (sflags & SVp_NOK) { |
3332b3c1 JH |
4496 | SvNOKp_on(dstr); |
4497 | /* Only set the public OK flag if the source has public OK. */ | |
4498 | if (sflags & SVf_NOK) | |
4499 | SvFLAGS(dstr) |= SVf_NOK; | |
ed6116ce LW |
4500 | SvNVX(dstr) = SvNVX(sstr); |
4501 | } | |
8990e307 | 4502 | if (sflags & SVp_IOK) { |
3332b3c1 JH |
4503 | (void)SvIOKp_on(dstr); |
4504 | if (sflags & SVf_IOK) | |
4505 | SvFLAGS(dstr) |= SVf_IOK; | |
2b1c7e3e | 4506 | if (sflags & SVf_IVisUV) |
25da4f38 | 4507 | SvIsUV_on(dstr); |
3332b3c1 | 4508 | SvIVX(dstr) = SvIVX(sstr); |
ed6116ce | 4509 | } |
a0d0e21e LW |
4510 | if (SvAMAGIC(sstr)) { |
4511 | SvAMAGIC_on(dstr); | |
4512 | } | |
ed6116ce | 4513 | } |
8990e307 | 4514 | else if (sflags & SVp_POK) { |
765f542d | 4515 | bool isSwipe = 0; |
79072805 LW |
4516 | |
4517 | /* | |
4518 | * Check to see if we can just swipe the string. If so, it's a | |
4519 | * possible small lose on short strings, but a big win on long ones. | |
463ee0b2 LW |
4520 | * It might even be a win on short strings if SvPVX(dstr) |
4521 | * has to be allocated and SvPVX(sstr) has to be freed. | |
79072805 LW |
4522 | */ |
4523 | ||
120fac95 NC |
4524 | /* Whichever path we take through the next code, we want this true, |
4525 | and doing it now facilitates the COW check. */ | |
4526 | (void)SvPOK_only(dstr); | |
4527 | ||
765f542d NC |
4528 | if ( |
4529 | #ifdef PERL_COPY_ON_WRITE | |
4530 | (sflags & (SVf_FAKE | SVf_READONLY)) != (SVf_FAKE | SVf_READONLY) | |
4531 | && | |
4532 | #endif | |
4533 | !(isSwipe = | |
4534 | (sflags & SVs_TEMP) && /* slated for free anyway? */ | |
4535 | !(sflags & SVf_OOK) && /* and not involved in OOK hack? */ | |
5fcdf167 NC |
4536 | (!(flags & SV_NOSTEAL)) && |
4537 | /* and we're allowed to steal temps */ | |
765f542d NC |
4538 | SvREFCNT(sstr) == 1 && /* and no other references to it? */ |
4539 | SvLEN(sstr) && /* and really is a string */ | |
645c22ef | 4540 | /* and won't be needed again, potentially */ |
765f542d NC |
4541 | !(PL_op && PL_op->op_type == OP_AASSIGN)) |
4542 | #ifdef PERL_COPY_ON_WRITE | |
4543 | && !((sflags & CAN_COW_MASK) == CAN_COW_FLAGS | |
120fac95 | 4544 | && (SvFLAGS(dstr) & CAN_COW_MASK) == CAN_COW_FLAGS |
765f542d NC |
4545 | && SvTYPE(sstr) >= SVt_PVIV) |
4546 | #endif | |
4547 | ) { | |
4548 | /* Failed the swipe test, and it's not a shared hash key either. | |
4549 | Have to copy the string. */ | |
4550 | STRLEN len = SvCUR(sstr); | |
4551 | SvGROW(dstr, len + 1); /* inlined from sv_setpvn */ | |
4552 | Move(SvPVX(sstr),SvPVX(dstr),len,char); | |
4553 | SvCUR_set(dstr, len); | |
4554 | *SvEND(dstr) = '\0'; | |
765f542d NC |
4555 | } else { |
4556 | /* If PERL_COPY_ON_WRITE is not defined, then isSwipe will always | |
4557 | be true in here. */ | |
4558 | #ifdef PERL_COPY_ON_WRITE | |
4559 | /* Either it's a shared hash key, or it's suitable for | |
4560 | copy-on-write or we can swipe the string. */ | |
46187eeb | 4561 | if (DEBUG_C_TEST) { |
ed252734 | 4562 | PerlIO_printf(Perl_debug_log, "Copy on write: sstr --> dstr\n"); |
e419cbc5 NC |
4563 | sv_dump(sstr); |
4564 | sv_dump(dstr); | |
46187eeb | 4565 | } |
765f542d NC |
4566 | if (!isSwipe) { |
4567 | /* I believe I should acquire a global SV mutex if | |
4568 | it's a COW sv (not a shared hash key) to stop | |
4569 | it going un copy-on-write. | |
4570 | If the source SV has gone un copy on write between up there | |
4571 | and down here, then (assert() that) it is of the correct | |
4572 | form to make it copy on write again */ | |
4573 | if ((sflags & (SVf_FAKE | SVf_READONLY)) | |
4574 | != (SVf_FAKE | SVf_READONLY)) { | |
4575 | SvREADONLY_on(sstr); | |
4576 | SvFAKE_on(sstr); | |
4577 | /* Make the source SV into a loop of 1. | |
4578 | (about to become 2) */ | |
a29f6d03 | 4579 | SV_COW_NEXT_SV_SET(sstr, sstr); |
765f542d NC |
4580 | } |
4581 | } | |
4582 | #endif | |
4583 | /* Initial code is common. */ | |
adbc6bb1 | 4584 | if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */ |
a5f75d66 AD |
4585 | if (SvOOK(dstr)) { |
4586 | SvFLAGS(dstr) &= ~SVf_OOK; | |
4587 | Safefree(SvPVX(dstr) - SvIVX(dstr)); | |
4588 | } | |
50483b2c | 4589 | else if (SvLEN(dstr)) |
a5f75d66 | 4590 | Safefree(SvPVX(dstr)); |
79072805 | 4591 | } |
765f542d NC |
4592 | |
4593 | #ifdef PERL_COPY_ON_WRITE | |
4594 | if (!isSwipe) { | |
4595 | /* making another shared SV. */ | |
4596 | STRLEN cur = SvCUR(sstr); | |
4597 | STRLEN len = SvLEN(sstr); | |
d89fc664 | 4598 | assert (SvTYPE(dstr) >= SVt_PVIV); |
765f542d NC |
4599 | if (len) { |
4600 | /* SvIsCOW_normal */ | |
4601 | /* splice us in between source and next-after-source. */ | |
a29f6d03 NC |
4602 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); |
4603 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
765f542d NC |
4604 | SvPV_set(dstr, SvPVX(sstr)); |
4605 | } else { | |
4606 | /* SvIsCOW_shared_hash */ | |
4607 | UV hash = SvUVX(sstr); | |
46187eeb NC |
4608 | DEBUG_C(PerlIO_printf(Perl_debug_log, |
4609 | "Copy on write: Sharing hash\n")); | |
765f542d NC |
4610 | SvPV_set(dstr, |
4611 | sharepvn(SvPVX(sstr), | |
4612 | (sflags & SVf_UTF8?-cur:cur), hash)); | |
4613 | SvUVX(dstr) = hash; | |
4614 | } | |
4615 | SvLEN(dstr) = len; | |
4616 | SvCUR(dstr) = cur; | |
4617 | SvREADONLY_on(dstr); | |
4618 | SvFAKE_on(dstr); | |
4619 | /* Relesase a global SV mutex. */ | |
4620 | } | |
4621 | else | |
4622 | #endif | |
4623 | { /* Passes the swipe test. */ | |
4624 | SvPV_set(dstr, SvPVX(sstr)); | |
4625 | SvLEN_set(dstr, SvLEN(sstr)); | |
4626 | SvCUR_set(dstr, SvCUR(sstr)); | |
4627 | ||
4628 | SvTEMP_off(dstr); | |
4629 | (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */ | |
4630 | SvPV_set(sstr, Nullch); | |
4631 | SvLEN_set(sstr, 0); | |
4632 | SvCUR_set(sstr, 0); | |
4633 | SvTEMP_off(sstr); | |
4634 | } | |
4635 | } | |
9aa983d2 | 4636 | if (sflags & SVf_UTF8) |
a7cb1f99 | 4637 | SvUTF8_on(dstr); |
79072805 | 4638 | /*SUPPRESS 560*/ |
8990e307 | 4639 | if (sflags & SVp_NOK) { |
3332b3c1 JH |
4640 | SvNOKp_on(dstr); |
4641 | if (sflags & SVf_NOK) | |
4642 | SvFLAGS(dstr) |= SVf_NOK; | |
463ee0b2 | 4643 | SvNVX(dstr) = SvNVX(sstr); |
79072805 | 4644 | } |
8990e307 | 4645 | if (sflags & SVp_IOK) { |
3332b3c1 JH |
4646 | (void)SvIOKp_on(dstr); |
4647 | if (sflags & SVf_IOK) | |
4648 | SvFLAGS(dstr) |= SVf_IOK; | |
2b1c7e3e | 4649 | if (sflags & SVf_IVisUV) |
25da4f38 | 4650 | SvIsUV_on(dstr); |
463ee0b2 | 4651 | SvIVX(dstr) = SvIVX(sstr); |
79072805 | 4652 | } |
92f0c265 | 4653 | if (SvVOK(sstr)) { |
7a5fa8a2 | 4654 | MAGIC *smg = mg_find(sstr,PERL_MAGIC_vstring); |
ece467f9 JP |
4655 | sv_magic(dstr, NULL, PERL_MAGIC_vstring, |
4656 | smg->mg_ptr, smg->mg_len); | |
439cb1c4 | 4657 | SvRMAGICAL_on(dstr); |
7a5fa8a2 | 4658 | } |
79072805 | 4659 | } |
8990e307 | 4660 | else if (sflags & SVp_IOK) { |
3332b3c1 JH |
4661 | if (sflags & SVf_IOK) |
4662 | (void)SvIOK_only(dstr); | |
4663 | else { | |
9cbac4c7 DM |
4664 | (void)SvOK_off(dstr); |
4665 | (void)SvIOKp_on(dstr); | |
3332b3c1 JH |
4666 | } |
4667 | /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */ | |
2b1c7e3e | 4668 | if (sflags & SVf_IVisUV) |
25da4f38 | 4669 | SvIsUV_on(dstr); |
3332b3c1 JH |
4670 | SvIVX(dstr) = SvIVX(sstr); |
4671 | if (sflags & SVp_NOK) { | |
4672 | if (sflags & SVf_NOK) | |
4673 | (void)SvNOK_on(dstr); | |
4674 | else | |
4675 | (void)SvNOKp_on(dstr); | |
4676 | SvNVX(dstr) = SvNVX(sstr); | |
4677 | } | |
4678 | } | |
4679 | else if (sflags & SVp_NOK) { | |
4680 | if (sflags & SVf_NOK) | |
4681 | (void)SvNOK_only(dstr); | |
4682 | else { | |
9cbac4c7 | 4683 | (void)SvOK_off(dstr); |
3332b3c1 JH |
4684 | SvNOKp_on(dstr); |
4685 | } | |
4686 | SvNVX(dstr) = SvNVX(sstr); | |
79072805 LW |
4687 | } |
4688 | else { | |
20408e3c | 4689 | if (dtype == SVt_PVGV) { |
e476b1b5 | 4690 | if (ckWARN(WARN_MISC)) |
9014280d | 4691 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Undefined value assigned to typeglob"); |
20408e3c GS |
4692 | } |
4693 | else | |
4694 | (void)SvOK_off(dstr); | |
a0d0e21e | 4695 | } |
27c9684d AP |
4696 | if (SvTAINTED(sstr)) |
4697 | SvTAINT(dstr); | |
79072805 LW |
4698 | } |
4699 | ||
954c1994 GS |
4700 | /* |
4701 | =for apidoc sv_setsv_mg | |
4702 | ||
4703 | Like C<sv_setsv>, but also handles 'set' magic. | |
4704 | ||
4705 | =cut | |
4706 | */ | |
4707 | ||
79072805 | 4708 | void |
864dbfa3 | 4709 | Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr) |
ef50df4b GS |
4710 | { |
4711 | sv_setsv(dstr,sstr); | |
4712 | SvSETMAGIC(dstr); | |
4713 | } | |
4714 | ||
ed252734 NC |
4715 | #ifdef PERL_COPY_ON_WRITE |
4716 | SV * | |
4717 | Perl_sv_setsv_cow(pTHX_ SV *dstr, SV *sstr) | |
4718 | { | |
4719 | STRLEN cur = SvCUR(sstr); | |
4720 | STRLEN len = SvLEN(sstr); | |
4721 | register char *new_pv; | |
4722 | ||
4723 | if (DEBUG_C_TEST) { | |
4724 | PerlIO_printf(Perl_debug_log, "Fast copy on write: %p -> %p\n", | |
4725 | sstr, dstr); | |
4726 | sv_dump(sstr); | |
4727 | if (dstr) | |
4728 | sv_dump(dstr); | |
4729 | } | |
4730 | ||
4731 | if (dstr) { | |
4732 | if (SvTHINKFIRST(dstr)) | |
4733 | sv_force_normal_flags(dstr, SV_COW_DROP_PV); | |
4734 | else if (SvPVX(dstr)) | |
4735 | Safefree(SvPVX(dstr)); | |
4736 | } | |
4737 | else | |
4738 | new_SV(dstr); | |
b988aa42 | 4739 | (void)SvUPGRADE (dstr, SVt_PVIV); |
ed252734 NC |
4740 | |
4741 | assert (SvPOK(sstr)); | |
4742 | assert (SvPOKp(sstr)); | |
4743 | assert (!SvIOK(sstr)); | |
4744 | assert (!SvIOKp(sstr)); | |
4745 | assert (!SvNOK(sstr)); | |
4746 | assert (!SvNOKp(sstr)); | |
4747 | ||
4748 | if (SvIsCOW(sstr)) { | |
4749 | ||
4750 | if (SvLEN(sstr) == 0) { | |
4751 | /* source is a COW shared hash key. */ | |
4752 | UV hash = SvUVX(sstr); | |
4753 | DEBUG_C(PerlIO_printf(Perl_debug_log, | |
4754 | "Fast copy on write: Sharing hash\n")); | |
4755 | SvUVX(dstr) = hash; | |
4756 | new_pv = sharepvn(SvPVX(sstr), (SvUTF8(sstr)?-cur:cur), hash); | |
4757 | goto common_exit; | |
4758 | } | |
4759 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); | |
4760 | } else { | |
4761 | assert ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS); | |
b988aa42 | 4762 | (void)SvUPGRADE (sstr, SVt_PVIV); |
ed252734 NC |
4763 | SvREADONLY_on(sstr); |
4764 | SvFAKE_on(sstr); | |
4765 | DEBUG_C(PerlIO_printf(Perl_debug_log, | |
4766 | "Fast copy on write: Converting sstr to COW\n")); | |
4767 | SV_COW_NEXT_SV_SET(dstr, sstr); | |
4768 | } | |
4769 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
4770 | new_pv = SvPVX(sstr); | |
4771 | ||
4772 | common_exit: | |
4773 | SvPV_set(dstr, new_pv); | |
4774 | SvFLAGS(dstr) = (SVt_PVIV|SVf_POK|SVp_POK|SVf_FAKE|SVf_READONLY); | |
4775 | if (SvUTF8(sstr)) | |
4776 | SvUTF8_on(dstr); | |
4777 | SvLEN(dstr) = len; | |
4778 | SvCUR(dstr) = cur; | |
4779 | if (DEBUG_C_TEST) { | |
4780 | sv_dump(dstr); | |
4781 | } | |
4782 | return dstr; | |
4783 | } | |
4784 | #endif | |
4785 | ||
954c1994 GS |
4786 | /* |
4787 | =for apidoc sv_setpvn | |
4788 | ||
4789 | Copies a string into an SV. The C<len> parameter indicates the number of | |
9e09f5f2 MHM |
4790 | bytes to be copied. If the C<ptr> argument is NULL the SV will become |
4791 | undefined. Does not handle 'set' magic. See C<sv_setpvn_mg>. | |
954c1994 GS |
4792 | |
4793 | =cut | |
4794 | */ | |
4795 | ||
ef50df4b | 4796 | void |
864dbfa3 | 4797 | Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
79072805 | 4798 | { |
c6f8c383 | 4799 | register char *dptr; |
22c522df | 4800 | |
765f542d | 4801 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 4802 | if (!ptr) { |
a0d0e21e | 4803 | (void)SvOK_off(sv); |
463ee0b2 LW |
4804 | return; |
4805 | } | |
22c522df JH |
4806 | else { |
4807 | /* len is STRLEN which is unsigned, need to copy to signed */ | |
4808 | IV iv = len; | |
9c5ffd7c JH |
4809 | if (iv < 0) |
4810 | Perl_croak(aTHX_ "panic: sv_setpvn called with negative strlen"); | |
22c522df | 4811 | } |
6fc92669 | 4812 | (void)SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 4813 | |
79072805 | 4814 | SvGROW(sv, len + 1); |
c6f8c383 GA |
4815 | dptr = SvPVX(sv); |
4816 | Move(ptr,dptr,len,char); | |
4817 | dptr[len] = '\0'; | |
79072805 | 4818 | SvCUR_set(sv, len); |
1aa99e6b | 4819 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4820 | SvTAINT(sv); |
79072805 LW |
4821 | } |
4822 | ||
954c1994 GS |
4823 | /* |
4824 | =for apidoc sv_setpvn_mg | |
4825 | ||
4826 | Like C<sv_setpvn>, but also handles 'set' magic. | |
4827 | ||
4828 | =cut | |
4829 | */ | |
4830 | ||
79072805 | 4831 | void |
864dbfa3 | 4832 | Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
ef50df4b GS |
4833 | { |
4834 | sv_setpvn(sv,ptr,len); | |
4835 | SvSETMAGIC(sv); | |
4836 | } | |
4837 | ||
954c1994 GS |
4838 | /* |
4839 | =for apidoc sv_setpv | |
4840 | ||
4841 | Copies a string into an SV. The string must be null-terminated. Does not | |
4842 | handle 'set' magic. See C<sv_setpv_mg>. | |
4843 | ||
4844 | =cut | |
4845 | */ | |
4846 | ||
ef50df4b | 4847 | void |
864dbfa3 | 4848 | Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
4849 | { |
4850 | register STRLEN len; | |
4851 | ||
765f542d | 4852 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 4853 | if (!ptr) { |
a0d0e21e | 4854 | (void)SvOK_off(sv); |
463ee0b2 LW |
4855 | return; |
4856 | } | |
79072805 | 4857 | len = strlen(ptr); |
6fc92669 | 4858 | (void)SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 4859 | |
79072805 | 4860 | SvGROW(sv, len + 1); |
463ee0b2 | 4861 | Move(ptr,SvPVX(sv),len+1,char); |
79072805 | 4862 | SvCUR_set(sv, len); |
1aa99e6b | 4863 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 LW |
4864 | SvTAINT(sv); |
4865 | } | |
4866 | ||
954c1994 GS |
4867 | /* |
4868 | =for apidoc sv_setpv_mg | |
4869 | ||
4870 | Like C<sv_setpv>, but also handles 'set' magic. | |
4871 | ||
4872 | =cut | |
4873 | */ | |
4874 | ||
463ee0b2 | 4875 | void |
864dbfa3 | 4876 | Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b GS |
4877 | { |
4878 | sv_setpv(sv,ptr); | |
4879 | SvSETMAGIC(sv); | |
4880 | } | |
4881 | ||
954c1994 GS |
4882 | /* |
4883 | =for apidoc sv_usepvn | |
4884 | ||
4885 | Tells an SV to use C<ptr> to find its string value. Normally the string is | |
1c846c1f | 4886 | stored inside the SV but sv_usepvn allows the SV to use an outside string. |
954c1994 GS |
4887 | The C<ptr> should point to memory that was allocated by C<malloc>. The |
4888 | string length, C<len>, must be supplied. This function will realloc the | |
4889 | memory pointed to by C<ptr>, so that pointer should not be freed or used by | |
4890 | the programmer after giving it to sv_usepvn. Does not handle 'set' magic. | |
4891 | See C<sv_usepvn_mg>. | |
4892 | ||
4893 | =cut | |
4894 | */ | |
4895 | ||
ef50df4b | 4896 | void |
864dbfa3 | 4897 | Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len) |
463ee0b2 | 4898 | { |
765f542d | 4899 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
c6f8c383 | 4900 | (void)SvUPGRADE(sv, SVt_PV); |
463ee0b2 | 4901 | if (!ptr) { |
a0d0e21e | 4902 | (void)SvOK_off(sv); |
463ee0b2 LW |
4903 | return; |
4904 | } | |
a0ed51b3 | 4905 | (void)SvOOK_off(sv); |
50483b2c | 4906 | if (SvPVX(sv) && SvLEN(sv)) |
463ee0b2 LW |
4907 | Safefree(SvPVX(sv)); |
4908 | Renew(ptr, len+1, char); | |
4909 | SvPVX(sv) = ptr; | |
4910 | SvCUR_set(sv, len); | |
4911 | SvLEN_set(sv, len+1); | |
4912 | *SvEND(sv) = '\0'; | |
1aa99e6b | 4913 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4914 | SvTAINT(sv); |
79072805 LW |
4915 | } |
4916 | ||
954c1994 GS |
4917 | /* |
4918 | =for apidoc sv_usepvn_mg | |
4919 | ||
4920 | Like C<sv_usepvn>, but also handles 'set' magic. | |
4921 | ||
4922 | =cut | |
4923 | */ | |
4924 | ||
ef50df4b | 4925 | void |
864dbfa3 | 4926 | Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len) |
ef50df4b | 4927 | { |
51c1089b | 4928 | sv_usepvn(sv,ptr,len); |
ef50df4b GS |
4929 | SvSETMAGIC(sv); |
4930 | } | |
4931 | ||
765f542d NC |
4932 | #ifdef PERL_COPY_ON_WRITE |
4933 | /* Need to do this *after* making the SV normal, as we need the buffer | |
4934 | pointer to remain valid until after we've copied it. If we let go too early, | |
4935 | another thread could invalidate it by unsharing last of the same hash key | |
4936 | (which it can do by means other than releasing copy-on-write Svs) | |
4937 | or by changing the other copy-on-write SVs in the loop. */ | |
4938 | STATIC void | |
4939 | S_sv_release_COW(pTHX_ register SV *sv, char *pvx, STRLEN cur, STRLEN len, | |
4940 | U32 hash, SV *after) | |
4941 | { | |
4942 | if (len) { /* this SV was SvIsCOW_normal(sv) */ | |
4943 | /* we need to find the SV pointing to us. */ | |
4944 | SV *current = SV_COW_NEXT_SV(after); | |
7a5fa8a2 | 4945 | |
765f542d NC |
4946 | if (current == sv) { |
4947 | /* The SV we point to points back to us (there were only two of us | |
4948 | in the loop.) | |
4949 | Hence other SV is no longer copy on write either. */ | |
4950 | SvFAKE_off(after); | |
4951 | SvREADONLY_off(after); | |
4952 | } else { | |
4953 | /* We need to follow the pointers around the loop. */ | |
4954 | SV *next; | |
4955 | while ((next = SV_COW_NEXT_SV(current)) != sv) { | |
4956 | assert (next); | |
4957 | current = next; | |
4958 | /* don't loop forever if the structure is bust, and we have | |
4959 | a pointer into a closed loop. */ | |
4960 | assert (current != after); | |
e419cbc5 | 4961 | assert (SvPVX(current) == pvx); |
765f542d NC |
4962 | } |
4963 | /* Make the SV before us point to the SV after us. */ | |
a29f6d03 | 4964 | SV_COW_NEXT_SV_SET(current, after); |
765f542d NC |
4965 | } |
4966 | } else { | |
4967 | unsharepvn(pvx, SvUTF8(sv) ? -(I32)cur : cur, hash); | |
4968 | } | |
4969 | } | |
4970 | ||
4971 | int | |
4972 | Perl_sv_release_IVX(pTHX_ register SV *sv) | |
4973 | { | |
4974 | if (SvIsCOW(sv)) | |
4975 | sv_force_normal_flags(sv, 0); | |
0c34ef67 MHM |
4976 | SvOOK_off(sv); |
4977 | return 0; | |
765f542d NC |
4978 | } |
4979 | #endif | |
645c22ef DM |
4980 | /* |
4981 | =for apidoc sv_force_normal_flags | |
4982 | ||
4983 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
4984 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
765f542d NC |
4985 | an xpvmg; if we're a copy-on-write scalar, this is the on-write time when |
4986 | we do the copy, and is also used locally. If C<SV_COW_DROP_PV> is set | |
4987 | then a copy-on-write scalar drops its PV buffer (if any) and becomes | |
4988 | SvPOK_off rather than making a copy. (Used where this scalar is about to be | |
d3050d9d | 4989 | set to some other value.) In addition, the C<flags> parameter gets passed to |
765f542d NC |
4990 | C<sv_unref_flags()> when unrefing. C<sv_force_normal> calls this function |
4991 | with flags set to 0. | |
645c22ef DM |
4992 | |
4993 | =cut | |
4994 | */ | |
4995 | ||
6fc92669 | 4996 | void |
840a7b70 | 4997 | Perl_sv_force_normal_flags(pTHX_ register SV *sv, U32 flags) |
0f15f207 | 4998 | { |
765f542d NC |
4999 | #ifdef PERL_COPY_ON_WRITE |
5000 | if (SvREADONLY(sv)) { | |
5001 | /* At this point I believe I should acquire a global SV mutex. */ | |
5002 | if (SvFAKE(sv)) { | |
5003 | char *pvx = SvPVX(sv); | |
5004 | STRLEN len = SvLEN(sv); | |
5005 | STRLEN cur = SvCUR(sv); | |
5006 | U32 hash = SvUVX(sv); | |
5007 | SV *next = SV_COW_NEXT_SV(sv); /* next COW sv in the loop. */ | |
46187eeb NC |
5008 | if (DEBUG_C_TEST) { |
5009 | PerlIO_printf(Perl_debug_log, | |
5010 | "Copy on write: Force normal %ld\n", | |
5011 | (long) flags); | |
e419cbc5 | 5012 | sv_dump(sv); |
46187eeb | 5013 | } |
765f542d NC |
5014 | SvFAKE_off(sv); |
5015 | SvREADONLY_off(sv); | |
5016 | /* This SV doesn't own the buffer, so need to New() a new one: */ | |
5017 | SvPVX(sv) = 0; | |
5018 | SvLEN(sv) = 0; | |
5019 | if (flags & SV_COW_DROP_PV) { | |
5020 | /* OK, so we don't need to copy our buffer. */ | |
5021 | SvPOK_off(sv); | |
5022 | } else { | |
5023 | SvGROW(sv, cur + 1); | |
5024 | Move(pvx,SvPVX(sv),cur,char); | |
5025 | SvCUR(sv) = cur; | |
5026 | *SvEND(sv) = '\0'; | |
5027 | } | |
e419cbc5 | 5028 | sv_release_COW(sv, pvx, cur, len, hash, next); |
46187eeb | 5029 | if (DEBUG_C_TEST) { |
e419cbc5 | 5030 | sv_dump(sv); |
46187eeb | 5031 | } |
765f542d | 5032 | } |
923e4eb5 | 5033 | else if (IN_PERL_RUNTIME) |
765f542d NC |
5034 | Perl_croak(aTHX_ PL_no_modify); |
5035 | /* At this point I believe that I can drop the global SV mutex. */ | |
5036 | } | |
5037 | #else | |
2213622d | 5038 | if (SvREADONLY(sv)) { |
1c846c1f NIS |
5039 | if (SvFAKE(sv)) { |
5040 | char *pvx = SvPVX(sv); | |
5c98da1c | 5041 | int is_utf8 = SvUTF8(sv); |
1c846c1f NIS |
5042 | STRLEN len = SvCUR(sv); |
5043 | U32 hash = SvUVX(sv); | |
10bcdfd6 NC |
5044 | SvFAKE_off(sv); |
5045 | SvREADONLY_off(sv); | |
5c98da1c NC |
5046 | SvPVX(sv) = 0; |
5047 | SvLEN(sv) = 0; | |
1c846c1f NIS |
5048 | SvGROW(sv, len + 1); |
5049 | Move(pvx,SvPVX(sv),len,char); | |
5050 | *SvEND(sv) = '\0'; | |
5c98da1c | 5051 | unsharepvn(pvx, is_utf8 ? -(I32)len : len, hash); |
1c846c1f | 5052 | } |
923e4eb5 | 5053 | else if (IN_PERL_RUNTIME) |
cea2e8a9 | 5054 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 5055 | } |
765f542d | 5056 | #endif |
2213622d | 5057 | if (SvROK(sv)) |
840a7b70 | 5058 | sv_unref_flags(sv, flags); |
6fc92669 GS |
5059 | else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) |
5060 | sv_unglob(sv); | |
0f15f207 | 5061 | } |
1c846c1f | 5062 | |
645c22ef DM |
5063 | /* |
5064 | =for apidoc sv_force_normal | |
5065 | ||
5066 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
5067 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
5068 | an xpvmg. See also C<sv_force_normal_flags>. | |
5069 | ||
5070 | =cut | |
5071 | */ | |
5072 | ||
840a7b70 IZ |
5073 | void |
5074 | Perl_sv_force_normal(pTHX_ register SV *sv) | |
5075 | { | |
5076 | sv_force_normal_flags(sv, 0); | |
5077 | } | |
5078 | ||
954c1994 GS |
5079 | /* |
5080 | =for apidoc sv_chop | |
5081 | ||
1c846c1f | 5082 | Efficient removal of characters from the beginning of the string buffer. |
954c1994 GS |
5083 | SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside |
5084 | the string buffer. The C<ptr> becomes the first character of the adjusted | |
645c22ef | 5085 | string. Uses the "OOK hack". |
31869a79 AE |
5086 | Beware: after this function returns, C<ptr> and SvPVX(sv) may no longer |
5087 | refer to the same chunk of data. | |
954c1994 GS |
5088 | |
5089 | =cut | |
5090 | */ | |
5091 | ||
79072805 | 5092 | void |
645c22ef | 5093 | Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) |
79072805 LW |
5094 | { |
5095 | register STRLEN delta; | |
a0d0e21e | 5096 | if (!ptr || !SvPOKp(sv)) |
79072805 | 5097 | return; |
31869a79 | 5098 | delta = ptr - SvPVX(sv); |
2213622d | 5099 | SV_CHECK_THINKFIRST(sv); |
79072805 LW |
5100 | if (SvTYPE(sv) < SVt_PVIV) |
5101 | sv_upgrade(sv,SVt_PVIV); | |
5102 | ||
5103 | if (!SvOOK(sv)) { | |
50483b2c JD |
5104 | if (!SvLEN(sv)) { /* make copy of shared string */ |
5105 | char *pvx = SvPVX(sv); | |
5106 | STRLEN len = SvCUR(sv); | |
5107 | SvGROW(sv, len + 1); | |
5108 | Move(pvx,SvPVX(sv),len,char); | |
5109 | *SvEND(sv) = '\0'; | |
5110 | } | |
463ee0b2 | 5111 | SvIVX(sv) = 0; |
a4bfb290 AB |
5112 | /* Same SvOOK_on but SvOOK_on does a SvIOK_off |
5113 | and we do that anyway inside the SvNIOK_off | |
5114 | */ | |
7a5fa8a2 | 5115 | SvFLAGS(sv) |= SVf_OOK; |
79072805 | 5116 | } |
a4bfb290 | 5117 | SvNIOK_off(sv); |
79072805 LW |
5118 | SvLEN(sv) -= delta; |
5119 | SvCUR(sv) -= delta; | |
463ee0b2 LW |
5120 | SvPVX(sv) += delta; |
5121 | SvIVX(sv) += delta; | |
79072805 LW |
5122 | } |
5123 | ||
09540bc3 JH |
5124 | /* sv_catpvn() is now a macro using Perl_sv_catpvn_flags(); |
5125 | * this function provided for binary compatibility only | |
5126 | */ | |
5127 | ||
5128 | void | |
5129 | Perl_sv_catpvn(pTHX_ SV *dsv, const char* sstr, STRLEN slen) | |
5130 | { | |
5131 | sv_catpvn_flags(dsv, sstr, slen, SV_GMAGIC); | |
5132 | } | |
5133 | ||
954c1994 GS |
5134 | /* |
5135 | =for apidoc sv_catpvn | |
5136 | ||
5137 | Concatenates the string onto the end of the string which is in the SV. The | |
1e54db1a JH |
5138 | C<len> indicates number of bytes to copy. If the SV has the UTF-8 |
5139 | status set, then the bytes appended should be valid UTF-8. | |
d5ce4a7c | 5140 | Handles 'get' magic, but not 'set' magic. See C<sv_catpvn_mg>. |
954c1994 | 5141 | |
8d6d96c1 HS |
5142 | =for apidoc sv_catpvn_flags |
5143 | ||
5144 | Concatenates the string onto the end of the string which is in the SV. The | |
1e54db1a JH |
5145 | C<len> indicates number of bytes to copy. If the SV has the UTF-8 |
5146 | status set, then the bytes appended should be valid UTF-8. | |
8d6d96c1 HS |
5147 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<dsv> if |
5148 | appropriate, else not. C<sv_catpvn> and C<sv_catpvn_nomg> are implemented | |
5149 | in terms of this function. | |
5150 | ||
5151 | =cut | |
5152 | */ | |
5153 | ||
5154 | void | |
5155 | Perl_sv_catpvn_flags(pTHX_ register SV *dsv, register const char *sstr, register STRLEN slen, I32 flags) | |
5156 | { | |
5157 | STRLEN dlen; | |
5158 | char *dstr; | |
5159 | ||
5160 | dstr = SvPV_force_flags(dsv, dlen, flags); | |
5161 | SvGROW(dsv, dlen + slen + 1); | |
5162 | if (sstr == dstr) | |
5163 | sstr = SvPVX(dsv); | |
5164 | Move(sstr, SvPVX(dsv) + dlen, slen, char); | |
5165 | SvCUR(dsv) += slen; | |
5166 | *SvEND(dsv) = '\0'; | |
5167 | (void)SvPOK_only_UTF8(dsv); /* validate pointer */ | |
5168 | SvTAINT(dsv); | |
79072805 LW |
5169 | } |
5170 | ||
954c1994 GS |
5171 | /* |
5172 | =for apidoc sv_catpvn_mg | |
5173 | ||
5174 | Like C<sv_catpvn>, but also handles 'set' magic. | |
5175 | ||
5176 | =cut | |
5177 | */ | |
5178 | ||
79072805 | 5179 | void |
864dbfa3 | 5180 | Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
ef50df4b GS |
5181 | { |
5182 | sv_catpvn(sv,ptr,len); | |
5183 | SvSETMAGIC(sv); | |
5184 | } | |
5185 | ||
09540bc3 JH |
5186 | /* sv_catsv() is now a macro using Perl_sv_catsv_flags(); |
5187 | * this function provided for binary compatibility only | |
5188 | */ | |
5189 | ||
5190 | void | |
5191 | Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr) | |
5192 | { | |
5193 | sv_catsv_flags(dstr, sstr, SV_GMAGIC); | |
5194 | } | |
5195 | ||
954c1994 GS |
5196 | /* |
5197 | =for apidoc sv_catsv | |
5198 | ||
13e8c8e3 JH |
5199 | Concatenates the string from SV C<ssv> onto the end of the string in |
5200 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. Handles 'get' magic, but | |
5201 | not 'set' magic. See C<sv_catsv_mg>. | |
954c1994 | 5202 | |
8d6d96c1 HS |
5203 | =for apidoc sv_catsv_flags |
5204 | ||
5205 | Concatenates the string from SV C<ssv> onto the end of the string in | |
5206 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. If C<flags> has C<SV_GMAGIC> | |
5207 | bit set, will C<mg_get> on the SVs if appropriate, else not. C<sv_catsv> | |
5208 | and C<sv_catsv_nomg> are implemented in terms of this function. | |
5209 | ||
5210 | =cut */ | |
5211 | ||
ef50df4b | 5212 | void |
8d6d96c1 | 5213 | Perl_sv_catsv_flags(pTHX_ SV *dsv, register SV *ssv, I32 flags) |
79072805 | 5214 | { |
13e8c8e3 JH |
5215 | char *spv; |
5216 | STRLEN slen; | |
46199a12 | 5217 | if (!ssv) |
79072805 | 5218 | return; |
46199a12 | 5219 | if ((spv = SvPV(ssv, slen))) { |
4fd84b44 AD |
5220 | /* sutf8 and dutf8 were type bool, but under USE_ITHREADS, |
5221 | gcc version 2.95.2 20000220 (Debian GNU/Linux) for | |
8cf8f3d1 NIS |
5222 | Linux xxx 2.2.17 on sparc64 with gcc -O2, we erroneously |
5223 | get dutf8 = 0x20000000, (i.e. SVf_UTF8) even though | |
4fd84b44 AD |
5224 | dsv->sv_flags doesn't have that bit set. |
5225 | Andy Dougherty 12 Oct 2001 | |
5226 | */ | |
5227 | I32 sutf8 = DO_UTF8(ssv); | |
5228 | I32 dutf8; | |
13e8c8e3 | 5229 | |
8d6d96c1 HS |
5230 | if (SvGMAGICAL(dsv) && (flags & SV_GMAGIC)) |
5231 | mg_get(dsv); | |
5232 | dutf8 = DO_UTF8(dsv); | |
5233 | ||
5234 | if (dutf8 != sutf8) { | |
13e8c8e3 | 5235 | if (dutf8) { |
46199a12 | 5236 | /* Not modifying source SV, so taking a temporary copy. */ |
8d6d96c1 | 5237 | SV* csv = sv_2mortal(newSVpvn(spv, slen)); |
13e8c8e3 | 5238 | |
46199a12 | 5239 | sv_utf8_upgrade(csv); |
8d6d96c1 | 5240 | spv = SvPV(csv, slen); |
13e8c8e3 | 5241 | } |
8d6d96c1 HS |
5242 | else |
5243 | sv_utf8_upgrade_nomg(dsv); | |
e84ff256 | 5244 | } |
8d6d96c1 | 5245 | sv_catpvn_nomg(dsv, spv, slen); |
560a288e | 5246 | } |
79072805 LW |
5247 | } |
5248 | ||
954c1994 GS |
5249 | /* |
5250 | =for apidoc sv_catsv_mg | |
5251 | ||
5252 | Like C<sv_catsv>, but also handles 'set' magic. | |
5253 | ||
5254 | =cut | |
5255 | */ | |
5256 | ||
79072805 | 5257 | void |
46199a12 | 5258 | Perl_sv_catsv_mg(pTHX_ SV *dsv, register SV *ssv) |
ef50df4b | 5259 | { |
46199a12 JH |
5260 | sv_catsv(dsv,ssv); |
5261 | SvSETMAGIC(dsv); | |
ef50df4b GS |
5262 | } |
5263 | ||
954c1994 GS |
5264 | /* |
5265 | =for apidoc sv_catpv | |
5266 | ||
5267 | Concatenates the string onto the end of the string which is in the SV. | |
1e54db1a JH |
5268 | If the SV has the UTF-8 status set, then the bytes appended should be |
5269 | valid UTF-8. Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>. | |
954c1994 | 5270 | |
d5ce4a7c | 5271 | =cut */ |
954c1994 | 5272 | |
ef50df4b | 5273 | void |
0c981600 | 5274 | Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
5275 | { |
5276 | register STRLEN len; | |
463ee0b2 | 5277 | STRLEN tlen; |
748a9306 | 5278 | char *junk; |
79072805 | 5279 | |
0c981600 | 5280 | if (!ptr) |
79072805 | 5281 | return; |
748a9306 | 5282 | junk = SvPV_force(sv, tlen); |
0c981600 | 5283 | len = strlen(ptr); |
463ee0b2 | 5284 | SvGROW(sv, tlen + len + 1); |
0c981600 JH |
5285 | if (ptr == junk) |
5286 | ptr = SvPVX(sv); | |
5287 | Move(ptr,SvPVX(sv)+tlen,len+1,char); | |
79072805 | 5288 | SvCUR(sv) += len; |
d41ff1b8 | 5289 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 5290 | SvTAINT(sv); |
79072805 LW |
5291 | } |
5292 | ||
954c1994 GS |
5293 | /* |
5294 | =for apidoc sv_catpv_mg | |
5295 | ||
5296 | Like C<sv_catpv>, but also handles 'set' magic. | |
5297 | ||
5298 | =cut | |
5299 | */ | |
5300 | ||
ef50df4b | 5301 | void |
0c981600 | 5302 | Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b | 5303 | { |
0c981600 | 5304 | sv_catpv(sv,ptr); |
ef50df4b GS |
5305 | SvSETMAGIC(sv); |
5306 | } | |
5307 | ||
645c22ef DM |
5308 | /* |
5309 | =for apidoc newSV | |
5310 | ||
5311 | Create a new null SV, or if len > 0, create a new empty SVt_PV type SV | |
5312 | with an initial PV allocation of len+1. Normally accessed via the C<NEWSV> | |
5313 | macro. | |
5314 | ||
5315 | =cut | |
5316 | */ | |
5317 | ||
79072805 | 5318 | SV * |
864dbfa3 | 5319 | Perl_newSV(pTHX_ STRLEN len) |
79072805 LW |
5320 | { |
5321 | register SV *sv; | |
1c846c1f | 5322 | |
4561caa4 | 5323 | new_SV(sv); |
79072805 LW |
5324 | if (len) { |
5325 | sv_upgrade(sv, SVt_PV); | |
5326 | SvGROW(sv, len + 1); | |
5327 | } | |
5328 | return sv; | |
5329 | } | |
954c1994 | 5330 | /* |
92110913 | 5331 | =for apidoc sv_magicext |
954c1994 | 5332 | |
68795e93 | 5333 | Adds magic to an SV, upgrading it if necessary. Applies the |
2d8d5d5a | 5334 | supplied vtable and returns a pointer to the magic added. |
92110913 | 5335 | |
2d8d5d5a SH |
5336 | Note that C<sv_magicext> will allow things that C<sv_magic> will not. |
5337 | In particular, you can add magic to SvREADONLY SVs, and add more than | |
5338 | one instance of the same 'how'. | |
645c22ef | 5339 | |
2d8d5d5a SH |
5340 | If C<namlen> is greater than zero then a C<savepvn> I<copy> of C<name> is |
5341 | stored, if C<namlen> is zero then C<name> is stored as-is and - as another | |
5342 | special case - if C<(name && namlen == HEf_SVKEY)> then C<name> is assumed | |
5343 | to contain an C<SV*> and is stored as-is with its REFCNT incremented. | |
92110913 | 5344 | |
2d8d5d5a | 5345 | (This is now used as a subroutine by C<sv_magic>.) |
954c1994 GS |
5346 | |
5347 | =cut | |
5348 | */ | |
92110913 | 5349 | MAGIC * |
e1ec3a88 | 5350 | Perl_sv_magicext(pTHX_ SV* sv, SV* obj, int how, const MGVTBL *vtable, |
92110913 | 5351 | const char* name, I32 namlen) |
79072805 LW |
5352 | { |
5353 | MAGIC* mg; | |
68795e93 | 5354 | |
92110913 NIS |
5355 | if (SvTYPE(sv) < SVt_PVMG) { |
5356 | (void)SvUPGRADE(sv, SVt_PVMG); | |
463ee0b2 | 5357 | } |
79072805 LW |
5358 | Newz(702,mg, 1, MAGIC); |
5359 | mg->mg_moremagic = SvMAGIC(sv); | |
79072805 | 5360 | SvMAGIC(sv) = mg; |
75f9d97a | 5361 | |
05f95b08 SB |
5362 | /* Sometimes a magic contains a reference loop, where the sv and |
5363 | object refer to each other. To prevent a reference loop that | |
5364 | would prevent such objects being freed, we look for such loops | |
5365 | and if we find one we avoid incrementing the object refcount. | |
87f0b213 JH |
5366 | |
5367 | Note we cannot do this to avoid self-tie loops as intervening RV must | |
b5ccf5f2 | 5368 | have its REFCNT incremented to keep it in existence. |
87f0b213 JH |
5369 | |
5370 | */ | |
14befaf4 DM |
5371 | if (!obj || obj == sv || |
5372 | how == PERL_MAGIC_arylen || | |
5373 | how == PERL_MAGIC_qr || | |
75f9d97a JH |
5374 | (SvTYPE(obj) == SVt_PVGV && |
5375 | (GvSV(obj) == sv || GvHV(obj) == (HV*)sv || GvAV(obj) == (AV*)sv || | |
5376 | GvCV(obj) == (CV*)sv || GvIOp(obj) == (IO*)sv || | |
2628be26 | 5377 | GvFORM(obj) == (CV*)sv))) |
75f9d97a | 5378 | { |
8990e307 | 5379 | mg->mg_obj = obj; |
75f9d97a | 5380 | } |
85e6fe83 | 5381 | else { |
8990e307 | 5382 | mg->mg_obj = SvREFCNT_inc(obj); |
85e6fe83 LW |
5383 | mg->mg_flags |= MGf_REFCOUNTED; |
5384 | } | |
b5ccf5f2 YST |
5385 | |
5386 | /* Normal self-ties simply pass a null object, and instead of | |
5387 | using mg_obj directly, use the SvTIED_obj macro to produce a | |
5388 | new RV as needed. For glob "self-ties", we are tieing the PVIO | |
5389 | with an RV obj pointing to the glob containing the PVIO. In | |
5390 | this case, to avoid a reference loop, we need to weaken the | |
5391 | reference. | |
5392 | */ | |
5393 | ||
5394 | if (how == PERL_MAGIC_tiedscalar && SvTYPE(sv) == SVt_PVIO && | |
5395 | obj && SvROK(obj) && GvIO(SvRV(obj)) == (IO*)sv) | |
5396 | { | |
5397 | sv_rvweaken(obj); | |
5398 | } | |
5399 | ||
79072805 | 5400 | mg->mg_type = how; |
565764a8 | 5401 | mg->mg_len = namlen; |
9cbac4c7 | 5402 | if (name) { |
92110913 | 5403 | if (namlen > 0) |
1edc1566 | 5404 | mg->mg_ptr = savepvn(name, namlen); |
c6ee37c5 | 5405 | else if (namlen == HEf_SVKEY) |
1edc1566 | 5406 | mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name); |
68795e93 | 5407 | else |
92110913 | 5408 | mg->mg_ptr = (char *) name; |
9cbac4c7 | 5409 | } |
92110913 | 5410 | mg->mg_virtual = vtable; |
68795e93 | 5411 | |
92110913 NIS |
5412 | mg_magical(sv); |
5413 | if (SvGMAGICAL(sv)) | |
5414 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
5415 | return mg; | |
5416 | } | |
5417 | ||
5418 | /* | |
5419 | =for apidoc sv_magic | |
1c846c1f | 5420 | |
92110913 NIS |
5421 | Adds magic to an SV. First upgrades C<sv> to type C<SVt_PVMG> if necessary, |
5422 | then adds a new magic item of type C<how> to the head of the magic list. | |
5423 | ||
2d8d5d5a SH |
5424 | See C<sv_magicext> (which C<sv_magic> now calls) for a description of the |
5425 | handling of the C<name> and C<namlen> arguments. | |
5426 | ||
4509d3fb SB |
5427 | You need to use C<sv_magicext> to add magic to SvREADONLY SVs and also |
5428 | to add more than one instance of the same 'how'. | |
5429 | ||
92110913 NIS |
5430 | =cut |
5431 | */ | |
5432 | ||
5433 | void | |
5434 | Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen) | |
68795e93 | 5435 | { |
e1ec3a88 | 5436 | const MGVTBL *vtable = 0; |
92110913 | 5437 | MAGIC* mg; |
92110913 | 5438 | |
765f542d NC |
5439 | #ifdef PERL_COPY_ON_WRITE |
5440 | if (SvIsCOW(sv)) | |
5441 | sv_force_normal_flags(sv, 0); | |
5442 | #endif | |
92110913 | 5443 | if (SvREADONLY(sv)) { |
923e4eb5 | 5444 | if (IN_PERL_RUNTIME |
92110913 NIS |
5445 | && how != PERL_MAGIC_regex_global |
5446 | && how != PERL_MAGIC_bm | |
5447 | && how != PERL_MAGIC_fm | |
5448 | && how != PERL_MAGIC_sv | |
e6469971 | 5449 | && how != PERL_MAGIC_backref |
92110913 NIS |
5450 | ) |
5451 | { | |
5452 | Perl_croak(aTHX_ PL_no_modify); | |
5453 | } | |
5454 | } | |
5455 | if (SvMAGICAL(sv) || (how == PERL_MAGIC_taint && SvTYPE(sv) >= SVt_PVMG)) { | |
5456 | if (SvMAGIC(sv) && (mg = mg_find(sv, how))) { | |
68795e93 NIS |
5457 | /* sv_magic() refuses to add a magic of the same 'how' as an |
5458 | existing one | |
92110913 NIS |
5459 | */ |
5460 | if (how == PERL_MAGIC_taint) | |
5461 | mg->mg_len |= 1; | |
5462 | return; | |
5463 | } | |
5464 | } | |
68795e93 | 5465 | |
79072805 | 5466 | switch (how) { |
14befaf4 | 5467 | case PERL_MAGIC_sv: |
92110913 | 5468 | vtable = &PL_vtbl_sv; |
79072805 | 5469 | break; |
14befaf4 | 5470 | case PERL_MAGIC_overload: |
92110913 | 5471 | vtable = &PL_vtbl_amagic; |
a0d0e21e | 5472 | break; |
14befaf4 | 5473 | case PERL_MAGIC_overload_elem: |
92110913 | 5474 | vtable = &PL_vtbl_amagicelem; |
a0d0e21e | 5475 | break; |
14befaf4 | 5476 | case PERL_MAGIC_overload_table: |
92110913 | 5477 | vtable = &PL_vtbl_ovrld; |
a0d0e21e | 5478 | break; |
14befaf4 | 5479 | case PERL_MAGIC_bm: |
92110913 | 5480 | vtable = &PL_vtbl_bm; |
79072805 | 5481 | break; |
14befaf4 | 5482 | case PERL_MAGIC_regdata: |
92110913 | 5483 | vtable = &PL_vtbl_regdata; |
6cef1e77 | 5484 | break; |
14befaf4 | 5485 | case PERL_MAGIC_regdatum: |
92110913 | 5486 | vtable = &PL_vtbl_regdatum; |
6cef1e77 | 5487 | break; |
14befaf4 | 5488 | case PERL_MAGIC_env: |
92110913 | 5489 | vtable = &PL_vtbl_env; |
79072805 | 5490 | break; |
14befaf4 | 5491 | case PERL_MAGIC_fm: |
92110913 | 5492 | vtable = &PL_vtbl_fm; |
55497cff | 5493 | break; |
14befaf4 | 5494 | case PERL_MAGIC_envelem: |
92110913 | 5495 | vtable = &PL_vtbl_envelem; |
79072805 | 5496 | break; |
14befaf4 | 5497 | case PERL_MAGIC_regex_global: |
92110913 | 5498 | vtable = &PL_vtbl_mglob; |
93a17b20 | 5499 | break; |
14befaf4 | 5500 | case PERL_MAGIC_isa: |
92110913 | 5501 | vtable = &PL_vtbl_isa; |
463ee0b2 | 5502 | break; |
14befaf4 | 5503 | case PERL_MAGIC_isaelem: |
92110913 | 5504 | vtable = &PL_vtbl_isaelem; |
463ee0b2 | 5505 | break; |
14befaf4 | 5506 | case PERL_MAGIC_nkeys: |
92110913 | 5507 | vtable = &PL_vtbl_nkeys; |
16660edb | 5508 | break; |
14befaf4 | 5509 | case PERL_MAGIC_dbfile: |
92110913 | 5510 | vtable = 0; |
93a17b20 | 5511 | break; |
14befaf4 | 5512 | case PERL_MAGIC_dbline: |
92110913 | 5513 | vtable = &PL_vtbl_dbline; |
79072805 | 5514 | break; |
36477c24 | 5515 | #ifdef USE_LOCALE_COLLATE |
14befaf4 | 5516 | case PERL_MAGIC_collxfrm: |
92110913 | 5517 | vtable = &PL_vtbl_collxfrm; |
bbce6d69 | 5518 | break; |
36477c24 | 5519 | #endif /* USE_LOCALE_COLLATE */ |
14befaf4 | 5520 | case PERL_MAGIC_tied: |
92110913 | 5521 | vtable = &PL_vtbl_pack; |
463ee0b2 | 5522 | break; |
14befaf4 DM |
5523 | case PERL_MAGIC_tiedelem: |
5524 | case PERL_MAGIC_tiedscalar: | |
92110913 | 5525 | vtable = &PL_vtbl_packelem; |
463ee0b2 | 5526 | break; |
14befaf4 | 5527 | case PERL_MAGIC_qr: |
92110913 | 5528 | vtable = &PL_vtbl_regexp; |
c277df42 | 5529 | break; |
14befaf4 | 5530 | case PERL_MAGIC_sig: |
92110913 | 5531 | vtable = &PL_vtbl_sig; |
79072805 | 5532 | break; |
14befaf4 | 5533 | case PERL_MAGIC_sigelem: |
92110913 | 5534 | vtable = &PL_vtbl_sigelem; |
79072805 | 5535 | break; |
14befaf4 | 5536 | case PERL_MAGIC_taint: |
92110913 | 5537 | vtable = &PL_vtbl_taint; |
463ee0b2 | 5538 | break; |
14befaf4 | 5539 | case PERL_MAGIC_uvar: |
92110913 | 5540 | vtable = &PL_vtbl_uvar; |
79072805 | 5541 | break; |
14befaf4 | 5542 | case PERL_MAGIC_vec: |
92110913 | 5543 | vtable = &PL_vtbl_vec; |
79072805 | 5544 | break; |
ece467f9 JP |
5545 | case PERL_MAGIC_vstring: |
5546 | vtable = 0; | |
5547 | break; | |
7e8c5dac HS |
5548 | case PERL_MAGIC_utf8: |
5549 | vtable = &PL_vtbl_utf8; | |
5550 | break; | |
14befaf4 | 5551 | case PERL_MAGIC_substr: |
92110913 | 5552 | vtable = &PL_vtbl_substr; |
79072805 | 5553 | break; |
14befaf4 | 5554 | case PERL_MAGIC_defelem: |
92110913 | 5555 | vtable = &PL_vtbl_defelem; |
5f05dabc | 5556 | break; |
14befaf4 | 5557 | case PERL_MAGIC_glob: |
92110913 | 5558 | vtable = &PL_vtbl_glob; |
79072805 | 5559 | break; |
14befaf4 | 5560 | case PERL_MAGIC_arylen: |
92110913 | 5561 | vtable = &PL_vtbl_arylen; |
79072805 | 5562 | break; |
14befaf4 | 5563 | case PERL_MAGIC_pos: |
92110913 | 5564 | vtable = &PL_vtbl_pos; |
a0d0e21e | 5565 | break; |
14befaf4 | 5566 | case PERL_MAGIC_backref: |
92110913 | 5567 | vtable = &PL_vtbl_backref; |
810b8aa5 | 5568 | break; |
14befaf4 DM |
5569 | case PERL_MAGIC_ext: |
5570 | /* Reserved for use by extensions not perl internals. */ | |
4633a7c4 LW |
5571 | /* Useful for attaching extension internal data to perl vars. */ |
5572 | /* Note that multiple extensions may clash if magical scalars */ | |
5573 | /* etc holding private data from one are passed to another. */ | |
a0d0e21e | 5574 | break; |
79072805 | 5575 | default: |
14befaf4 | 5576 | Perl_croak(aTHX_ "Don't know how to handle magic of type \\%o", how); |
463ee0b2 | 5577 | } |
68795e93 | 5578 | |
92110913 NIS |
5579 | /* Rest of work is done else where */ |
5580 | mg = sv_magicext(sv,obj,how,vtable,name,namlen); | |
68795e93 | 5581 | |
92110913 NIS |
5582 | switch (how) { |
5583 | case PERL_MAGIC_taint: | |
5584 | mg->mg_len = 1; | |
5585 | break; | |
5586 | case PERL_MAGIC_ext: | |
5587 | case PERL_MAGIC_dbfile: | |
5588 | SvRMAGICAL_on(sv); | |
5589 | break; | |
5590 | } | |
463ee0b2 LW |
5591 | } |
5592 | ||
c461cf8f JH |
5593 | /* |
5594 | =for apidoc sv_unmagic | |
5595 | ||
645c22ef | 5596 | Removes all magic of type C<type> from an SV. |
c461cf8f JH |
5597 | |
5598 | =cut | |
5599 | */ | |
5600 | ||
463ee0b2 | 5601 | int |
864dbfa3 | 5602 | Perl_sv_unmagic(pTHX_ SV *sv, int type) |
463ee0b2 LW |
5603 | { |
5604 | MAGIC* mg; | |
5605 | MAGIC** mgp; | |
91bba347 | 5606 | if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv)) |
463ee0b2 LW |
5607 | return 0; |
5608 | mgp = &SvMAGIC(sv); | |
5609 | for (mg = *mgp; mg; mg = *mgp) { | |
5610 | if (mg->mg_type == type) { | |
e1ec3a88 | 5611 | const MGVTBL* const vtbl = mg->mg_virtual; |
463ee0b2 | 5612 | *mgp = mg->mg_moremagic; |
1d7c1841 | 5613 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 | 5614 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
14befaf4 | 5615 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
92110913 | 5616 | if (mg->mg_len > 0) |
1edc1566 | 5617 | Safefree(mg->mg_ptr); |
565764a8 | 5618 | else if (mg->mg_len == HEf_SVKEY) |
1edc1566 | 5619 | SvREFCNT_dec((SV*)mg->mg_ptr); |
7e8c5dac HS |
5620 | else if (mg->mg_type == PERL_MAGIC_utf8 && mg->mg_ptr) |
5621 | Safefree(mg->mg_ptr); | |
9cbac4c7 | 5622 | } |
a0d0e21e LW |
5623 | if (mg->mg_flags & MGf_REFCOUNTED) |
5624 | SvREFCNT_dec(mg->mg_obj); | |
463ee0b2 LW |
5625 | Safefree(mg); |
5626 | } | |
5627 | else | |
5628 | mgp = &mg->mg_moremagic; | |
79072805 | 5629 | } |
91bba347 | 5630 | if (!SvMAGIC(sv)) { |
463ee0b2 | 5631 | SvMAGICAL_off(sv); |
06759ea0 | 5632 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
463ee0b2 LW |
5633 | } |
5634 | ||
5635 | return 0; | |
79072805 LW |
5636 | } |
5637 | ||
c461cf8f JH |
5638 | /* |
5639 | =for apidoc sv_rvweaken | |
5640 | ||
645c22ef DM |
5641 | Weaken a reference: set the C<SvWEAKREF> flag on this RV; give the |
5642 | referred-to SV C<PERL_MAGIC_backref> magic if it hasn't already; and | |
5643 | push a back-reference to this RV onto the array of backreferences | |
5644 | associated with that magic. | |
c461cf8f JH |
5645 | |
5646 | =cut | |
5647 | */ | |
5648 | ||
810b8aa5 | 5649 | SV * |
864dbfa3 | 5650 | Perl_sv_rvweaken(pTHX_ SV *sv) |
810b8aa5 GS |
5651 | { |
5652 | SV *tsv; | |
5653 | if (!SvOK(sv)) /* let undefs pass */ | |
5654 | return sv; | |
5655 | if (!SvROK(sv)) | |
cea2e8a9 | 5656 | Perl_croak(aTHX_ "Can't weaken a nonreference"); |
810b8aa5 | 5657 | else if (SvWEAKREF(sv)) { |
810b8aa5 | 5658 | if (ckWARN(WARN_MISC)) |
9014280d | 5659 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Reference is already weak"); |
810b8aa5 GS |
5660 | return sv; |
5661 | } | |
5662 | tsv = SvRV(sv); | |
5663 | sv_add_backref(tsv, sv); | |
5664 | SvWEAKREF_on(sv); | |
1c846c1f | 5665 | SvREFCNT_dec(tsv); |
810b8aa5 GS |
5666 | return sv; |
5667 | } | |
5668 | ||
645c22ef DM |
5669 | /* Give tsv backref magic if it hasn't already got it, then push a |
5670 | * back-reference to sv onto the array associated with the backref magic. | |
5671 | */ | |
5672 | ||
810b8aa5 | 5673 | STATIC void |
cea2e8a9 | 5674 | S_sv_add_backref(pTHX_ SV *tsv, SV *sv) |
810b8aa5 GS |
5675 | { |
5676 | AV *av; | |
5677 | MAGIC *mg; | |
14befaf4 | 5678 | if (SvMAGICAL(tsv) && (mg = mg_find(tsv, PERL_MAGIC_backref))) |
810b8aa5 GS |
5679 | av = (AV*)mg->mg_obj; |
5680 | else { | |
5681 | av = newAV(); | |
14befaf4 | 5682 | sv_magic(tsv, (SV*)av, PERL_MAGIC_backref, NULL, 0); |
d99b02a1 DM |
5683 | /* av now has a refcnt of 2, which avoids it getting freed |
5684 | * before us during global cleanup. The extra ref is removed | |
5685 | * by magic_killbackrefs() when tsv is being freed */ | |
810b8aa5 | 5686 | } |
d91d49e8 | 5687 | if (AvFILLp(av) >= AvMAX(av)) { |
fdc9a813 | 5688 | I32 i; |
d91d49e8 | 5689 | SV **svp = AvARRAY(av); |
fdc9a813 AE |
5690 | for (i = AvFILLp(av); i >= 0; i--) |
5691 | if (!svp[i]) { | |
d91d49e8 MM |
5692 | svp[i] = sv; /* reuse the slot */ |
5693 | return; | |
5694 | } | |
d91d49e8 MM |
5695 | av_extend(av, AvFILLp(av)+1); |
5696 | } | |
5697 | AvARRAY(av)[++AvFILLp(av)] = sv; /* av_push() */ | |
810b8aa5 GS |
5698 | } |
5699 | ||
645c22ef DM |
5700 | /* delete a back-reference to ourselves from the backref magic associated |
5701 | * with the SV we point to. | |
5702 | */ | |
5703 | ||
1c846c1f | 5704 | STATIC void |
cea2e8a9 | 5705 | S_sv_del_backref(pTHX_ SV *sv) |
810b8aa5 GS |
5706 | { |
5707 | AV *av; | |
5708 | SV **svp; | |
5709 | I32 i; | |
5710 | SV *tsv = SvRV(sv); | |
c04a4dfe | 5711 | MAGIC *mg = NULL; |
14befaf4 | 5712 | if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, PERL_MAGIC_backref))) |
cea2e8a9 | 5713 | Perl_croak(aTHX_ "panic: del_backref"); |
810b8aa5 GS |
5714 | av = (AV *)mg->mg_obj; |
5715 | svp = AvARRAY(av); | |
fdc9a813 AE |
5716 | for (i = AvFILLp(av); i >= 0; i--) |
5717 | if (svp[i] == sv) svp[i] = Nullsv; | |
810b8aa5 GS |
5718 | } |
5719 | ||
954c1994 GS |
5720 | /* |
5721 | =for apidoc sv_insert | |
5722 | ||
5723 | Inserts a string at the specified offset/length within the SV. Similar to | |
5724 | the Perl substr() function. | |
5725 | ||
5726 | =cut | |
5727 | */ | |
5728 | ||
79072805 | 5729 | void |
e1ec3a88 | 5730 | Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, const char *little, STRLEN littlelen) |
79072805 LW |
5731 | { |
5732 | register char *big; | |
5733 | register char *mid; | |
5734 | register char *midend; | |
5735 | register char *bigend; | |
5736 | register I32 i; | |
6ff81951 | 5737 | STRLEN curlen; |
1c846c1f | 5738 | |
79072805 | 5739 | |
8990e307 | 5740 | if (!bigstr) |
cea2e8a9 | 5741 | Perl_croak(aTHX_ "Can't modify non-existent substring"); |
6ff81951 | 5742 | SvPV_force(bigstr, curlen); |
60fa28ff | 5743 | (void)SvPOK_only_UTF8(bigstr); |
6ff81951 GS |
5744 | if (offset + len > curlen) { |
5745 | SvGROW(bigstr, offset+len+1); | |
5746 | Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char); | |
5747 | SvCUR_set(bigstr, offset+len); | |
5748 | } | |
79072805 | 5749 | |
69b47968 | 5750 | SvTAINT(bigstr); |
79072805 LW |
5751 | i = littlelen - len; |
5752 | if (i > 0) { /* string might grow */ | |
a0d0e21e | 5753 | big = SvGROW(bigstr, SvCUR(bigstr) + i + 1); |
79072805 LW |
5754 | mid = big + offset + len; |
5755 | midend = bigend = big + SvCUR(bigstr); | |
5756 | bigend += i; | |
5757 | *bigend = '\0'; | |
5758 | while (midend > mid) /* shove everything down */ | |
5759 | *--bigend = *--midend; | |
5760 | Move(little,big+offset,littlelen,char); | |
5761 | SvCUR(bigstr) += i; | |
5762 | SvSETMAGIC(bigstr); | |
5763 | return; | |
5764 | } | |
5765 | else if (i == 0) { | |
463ee0b2 | 5766 | Move(little,SvPVX(bigstr)+offset,len,char); |
79072805 LW |
5767 | SvSETMAGIC(bigstr); |
5768 | return; | |
5769 | } | |
5770 | ||
463ee0b2 | 5771 | big = SvPVX(bigstr); |
79072805 LW |
5772 | mid = big + offset; |
5773 | midend = mid + len; | |
5774 | bigend = big + SvCUR(bigstr); | |
5775 | ||
5776 | if (midend > bigend) | |
cea2e8a9 | 5777 | Perl_croak(aTHX_ "panic: sv_insert"); |
79072805 LW |
5778 | |
5779 | if (mid - big > bigend - midend) { /* faster to shorten from end */ | |
5780 | if (littlelen) { | |
5781 | Move(little, mid, littlelen,char); | |
5782 | mid += littlelen; | |
5783 | } | |
5784 | i = bigend - midend; | |
5785 | if (i > 0) { | |
5786 | Move(midend, mid, i,char); | |
5787 | mid += i; | |
5788 | } | |
5789 | *mid = '\0'; | |
5790 | SvCUR_set(bigstr, mid - big); | |
5791 | } | |
5792 | /*SUPPRESS 560*/ | |
155aba94 | 5793 | else if ((i = mid - big)) { /* faster from front */ |
79072805 LW |
5794 | midend -= littlelen; |
5795 | mid = midend; | |
5796 | sv_chop(bigstr,midend-i); | |
5797 | big += i; | |
5798 | while (i--) | |
5799 | *--midend = *--big; | |
5800 | if (littlelen) | |
5801 | Move(little, mid, littlelen,char); | |
5802 | } | |
5803 | else if (littlelen) { | |
5804 | midend -= littlelen; | |
5805 | sv_chop(bigstr,midend); | |
5806 | Move(little,midend,littlelen,char); | |
5807 | } | |
5808 | else { | |
5809 | sv_chop(bigstr,midend); | |
5810 | } | |
5811 | SvSETMAGIC(bigstr); | |
5812 | } | |
5813 | ||
c461cf8f JH |
5814 | /* |
5815 | =for apidoc sv_replace | |
5816 | ||
5817 | Make the first argument a copy of the second, then delete the original. | |
645c22ef DM |
5818 | The target SV physically takes over ownership of the body of the source SV |
5819 | and inherits its flags; however, the target keeps any magic it owns, | |
5820 | and any magic in the source is discarded. | |
ff276b08 | 5821 | Note that this is a rather specialist SV copying operation; most of the |
645c22ef | 5822 | time you'll want to use C<sv_setsv> or one of its many macro front-ends. |
c461cf8f JH |
5823 | |
5824 | =cut | |
5825 | */ | |
79072805 LW |
5826 | |
5827 | void | |
864dbfa3 | 5828 | Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv) |
79072805 LW |
5829 | { |
5830 | U32 refcnt = SvREFCNT(sv); | |
765f542d | 5831 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
0453d815 | 5832 | if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL)) |
9014280d | 5833 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "Reference miscount in sv_replace()"); |
93a17b20 | 5834 | if (SvMAGICAL(sv)) { |
a0d0e21e LW |
5835 | if (SvMAGICAL(nsv)) |
5836 | mg_free(nsv); | |
5837 | else | |
5838 | sv_upgrade(nsv, SVt_PVMG); | |
93a17b20 | 5839 | SvMAGIC(nsv) = SvMAGIC(sv); |
a0d0e21e | 5840 | SvFLAGS(nsv) |= SvMAGICAL(sv); |
93a17b20 LW |
5841 | SvMAGICAL_off(sv); |
5842 | SvMAGIC(sv) = 0; | |
5843 | } | |
79072805 LW |
5844 | SvREFCNT(sv) = 0; |
5845 | sv_clear(sv); | |
477f5d66 | 5846 | assert(!SvREFCNT(sv)); |
fd0854ff DM |
5847 | #ifdef DEBUG_LEAKING_SCALARS |
5848 | sv->sv_flags = nsv->sv_flags; | |
5849 | sv->sv_any = nsv->sv_any; | |
5850 | sv->sv_refcnt = nsv->sv_refcnt; | |
5851 | #else | |
79072805 | 5852 | StructCopy(nsv,sv,SV); |
fd0854ff DM |
5853 | #endif |
5854 | ||
d3d0e6f1 NC |
5855 | #ifdef PERL_COPY_ON_WRITE |
5856 | if (SvIsCOW_normal(nsv)) { | |
5857 | /* We need to follow the pointers around the loop to make the | |
5858 | previous SV point to sv, rather than nsv. */ | |
5859 | SV *next; | |
5860 | SV *current = nsv; | |
5861 | while ((next = SV_COW_NEXT_SV(current)) != nsv) { | |
5862 | assert(next); | |
5863 | current = next; | |
5864 | assert(SvPVX(current) == SvPVX(nsv)); | |
5865 | } | |
5866 | /* Make the SV before us point to the SV after us. */ | |
5867 | if (DEBUG_C_TEST) { | |
5868 | PerlIO_printf(Perl_debug_log, "previous is\n"); | |
5869 | sv_dump(current); | |
a29f6d03 NC |
5870 | PerlIO_printf(Perl_debug_log, |
5871 | "move it from 0x%"UVxf" to 0x%"UVxf"\n", | |
d3d0e6f1 NC |
5872 | (UV) SV_COW_NEXT_SV(current), (UV) sv); |
5873 | } | |
a29f6d03 | 5874 | SV_COW_NEXT_SV_SET(current, sv); |
d3d0e6f1 NC |
5875 | } |
5876 | #endif | |
79072805 | 5877 | SvREFCNT(sv) = refcnt; |
1edc1566 | 5878 | SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */ |
39cf41c2 | 5879 | SvREFCNT(nsv) = 0; |
463ee0b2 | 5880 | del_SV(nsv); |
79072805 LW |
5881 | } |
5882 | ||
c461cf8f JH |
5883 | /* |
5884 | =for apidoc sv_clear | |
5885 | ||
645c22ef DM |
5886 | Clear an SV: call any destructors, free up any memory used by the body, |
5887 | and free the body itself. The SV's head is I<not> freed, although | |
5888 | its type is set to all 1's so that it won't inadvertently be assumed | |
5889 | to be live during global destruction etc. | |
5890 | This function should only be called when REFCNT is zero. Most of the time | |
5891 | you'll want to call C<sv_free()> (or its macro wrapper C<SvREFCNT_dec>) | |
5892 | instead. | |
c461cf8f JH |
5893 | |
5894 | =cut | |
5895 | */ | |
5896 | ||
79072805 | 5897 | void |
864dbfa3 | 5898 | Perl_sv_clear(pTHX_ register SV *sv) |
79072805 | 5899 | { |
ec12f114 | 5900 | HV* stash; |
79072805 LW |
5901 | assert(sv); |
5902 | assert(SvREFCNT(sv) == 0); | |
5903 | ||
ed6116ce | 5904 | if (SvOBJECT(sv)) { |
3280af22 | 5905 | if (PL_defstash) { /* Still have a symbol table? */ |
39644a26 | 5906 | dSP; |
32251b26 | 5907 | CV* destructor; |
a0d0e21e | 5908 | |
5cc433a6 | 5909 | |
8ebc5c01 | 5910 | |
d460ef45 | 5911 | do { |
4e8e7886 | 5912 | stash = SvSTASH(sv); |
32251b26 | 5913 | destructor = StashHANDLER(stash,DESTROY); |
4e8e7886 | 5914 | if (destructor) { |
5cc433a6 AB |
5915 | SV* tmpref = newRV(sv); |
5916 | SvREADONLY_on(tmpref); /* DESTROY() could be naughty */ | |
4e8e7886 | 5917 | ENTER; |
e788e7d3 | 5918 | PUSHSTACKi(PERLSI_DESTROY); |
4e8e7886 GS |
5919 | EXTEND(SP, 2); |
5920 | PUSHMARK(SP); | |
5cc433a6 | 5921 | PUSHs(tmpref); |
4e8e7886 | 5922 | PUTBACK; |
44389ee9 | 5923 | call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR|G_VOID); |
7a5fa8a2 NIS |
5924 | |
5925 | ||
d3acc0f7 | 5926 | POPSTACK; |
3095d977 | 5927 | SPAGAIN; |
4e8e7886 | 5928 | LEAVE; |
5cc433a6 AB |
5929 | if(SvREFCNT(tmpref) < 2) { |
5930 | /* tmpref is not kept alive! */ | |
5931 | SvREFCNT(sv)--; | |
5932 | SvRV(tmpref) = 0; | |
5933 | SvROK_off(tmpref); | |
5934 | } | |
5935 | SvREFCNT_dec(tmpref); | |
4e8e7886 GS |
5936 | } |
5937 | } while (SvOBJECT(sv) && SvSTASH(sv) != stash); | |
8ebc5c01 | 5938 | |
6f44e0a4 JP |
5939 | |
5940 | if (SvREFCNT(sv)) { | |
5941 | if (PL_in_clean_objs) | |
cea2e8a9 | 5942 | Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'", |
6f44e0a4 JP |
5943 | HvNAME(stash)); |
5944 | /* DESTROY gave object new lease on life */ | |
5945 | return; | |
5946 | } | |
a0d0e21e | 5947 | } |
4e8e7886 | 5948 | |
a0d0e21e | 5949 | if (SvOBJECT(sv)) { |
4e8e7886 | 5950 | SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */ |
a0d0e21e LW |
5951 | SvOBJECT_off(sv); /* Curse the object. */ |
5952 | if (SvTYPE(sv) != SVt_PVIO) | |
3280af22 | 5953 | --PL_sv_objcount; /* XXX Might want something more general */ |
a0d0e21e | 5954 | } |
463ee0b2 | 5955 | } |
524189f1 JH |
5956 | if (SvTYPE(sv) >= SVt_PVMG) { |
5957 | if (SvMAGIC(sv)) | |
5958 | mg_free(sv); | |
5959 | if (SvFLAGS(sv) & SVpad_TYPED) | |
5960 | SvREFCNT_dec(SvSTASH(sv)); | |
5961 | } | |
ec12f114 | 5962 | stash = NULL; |
79072805 | 5963 | switch (SvTYPE(sv)) { |
8990e307 | 5964 | case SVt_PVIO: |
df0bd2f4 GS |
5965 | if (IoIFP(sv) && |
5966 | IoIFP(sv) != PerlIO_stdin() && | |
5f05dabc | 5967 | IoIFP(sv) != PerlIO_stdout() && |
5968 | IoIFP(sv) != PerlIO_stderr()) | |
93578b34 | 5969 | { |
f2b5be74 | 5970 | io_close((IO*)sv, FALSE); |
93578b34 | 5971 | } |
1d7c1841 | 5972 | if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP)) |
1236053a | 5973 | PerlDir_close(IoDIRP(sv)); |
1d7c1841 | 5974 | IoDIRP(sv) = (DIR*)NULL; |
8990e307 LW |
5975 | Safefree(IoTOP_NAME(sv)); |
5976 | Safefree(IoFMT_NAME(sv)); | |
5977 | Safefree(IoBOTTOM_NAME(sv)); | |
a0d0e21e | 5978 | /* FALL THROUGH */ |
79072805 | 5979 | case SVt_PVBM: |
a0d0e21e | 5980 | goto freescalar; |
79072805 | 5981 | case SVt_PVCV: |
748a9306 | 5982 | case SVt_PVFM: |
85e6fe83 | 5983 | cv_undef((CV*)sv); |
a0d0e21e | 5984 | goto freescalar; |
79072805 | 5985 | case SVt_PVHV: |
85e6fe83 | 5986 | hv_undef((HV*)sv); |
a0d0e21e | 5987 | break; |
79072805 | 5988 | case SVt_PVAV: |
85e6fe83 | 5989 | av_undef((AV*)sv); |
a0d0e21e | 5990 | break; |
02270b4e | 5991 | case SVt_PVLV: |
dd28f7bb DM |
5992 | if (LvTYPE(sv) == 'T') { /* for tie: return HE to pool */ |
5993 | SvREFCNT_dec(HeKEY_sv((HE*)LvTARG(sv))); | |
5994 | HeNEXT((HE*)LvTARG(sv)) = PL_hv_fetch_ent_mh; | |
5995 | PL_hv_fetch_ent_mh = (HE*)LvTARG(sv); | |
5996 | } | |
5997 | else if (LvTYPE(sv) != 't') /* unless tie: unrefcnted fake SV** */ | |
5998 | SvREFCNT_dec(LvTARG(sv)); | |
02270b4e | 5999 | goto freescalar; |
a0d0e21e | 6000 | case SVt_PVGV: |
1edc1566 | 6001 | gp_free((GV*)sv); |
a0d0e21e | 6002 | Safefree(GvNAME(sv)); |
ec12f114 JPC |
6003 | /* cannot decrease stash refcount yet, as we might recursively delete |
6004 | ourselves when the refcnt drops to zero. Delay SvREFCNT_dec | |
6005 | of stash until current sv is completely gone. | |
6006 | -- JohnPC, 27 Mar 1998 */ | |
6007 | stash = GvSTASH(sv); | |
a0d0e21e | 6008 | /* FALL THROUGH */ |
79072805 | 6009 | case SVt_PVMG: |
79072805 LW |
6010 | case SVt_PVNV: |
6011 | case SVt_PVIV: | |
a0d0e21e | 6012 | freescalar: |
0c34ef67 | 6013 | SvOOK_off(sv); |
79072805 LW |
6014 | /* FALL THROUGH */ |
6015 | case SVt_PV: | |
a0d0e21e | 6016 | case SVt_RV: |
810b8aa5 GS |
6017 | if (SvROK(sv)) { |
6018 | if (SvWEAKREF(sv)) | |
6019 | sv_del_backref(sv); | |
6020 | else | |
6021 | SvREFCNT_dec(SvRV(sv)); | |
6022 | } | |
765f542d NC |
6023 | #ifdef PERL_COPY_ON_WRITE |
6024 | else if (SvPVX(sv)) { | |
6025 | if (SvIsCOW(sv)) { | |
6026 | /* I believe I need to grab the global SV mutex here and | |
6027 | then recheck the COW status. */ | |
46187eeb NC |
6028 | if (DEBUG_C_TEST) { |
6029 | PerlIO_printf(Perl_debug_log, "Copy on write: clear\n"); | |
e419cbc5 | 6030 | sv_dump(sv); |
46187eeb | 6031 | } |
e419cbc5 | 6032 | sv_release_COW(sv, SvPVX(sv), SvCUR(sv), SvLEN(sv), |
765f542d NC |
6033 | SvUVX(sv), SV_COW_NEXT_SV(sv)); |
6034 | /* And drop it here. */ | |
6035 | SvFAKE_off(sv); | |
6036 | } else if (SvLEN(sv)) { | |
6037 | Safefree(SvPVX(sv)); | |
6038 | } | |
6039 | } | |
6040 | #else | |
1edc1566 | 6041 | else if (SvPVX(sv) && SvLEN(sv)) |
463ee0b2 | 6042 | Safefree(SvPVX(sv)); |
1c846c1f | 6043 | else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) { |
25716404 GS |
6044 | unsharepvn(SvPVX(sv), |
6045 | SvUTF8(sv) ? -(I32)SvCUR(sv) : SvCUR(sv), | |
6046 | SvUVX(sv)); | |
1c846c1f NIS |
6047 | SvFAKE_off(sv); |
6048 | } | |
765f542d | 6049 | #endif |
79072805 | 6050 | break; |
a0d0e21e | 6051 | /* |
79072805 | 6052 | case SVt_NV: |
79072805 | 6053 | case SVt_IV: |
79072805 LW |
6054 | case SVt_NULL: |
6055 | break; | |
a0d0e21e | 6056 | */ |
79072805 LW |
6057 | } |
6058 | ||
6059 | switch (SvTYPE(sv)) { | |
6060 | case SVt_NULL: | |
6061 | break; | |
79072805 LW |
6062 | case SVt_IV: |
6063 | del_XIV(SvANY(sv)); | |
6064 | break; | |
6065 | case SVt_NV: | |
6066 | del_XNV(SvANY(sv)); | |
6067 | break; | |
ed6116ce LW |
6068 | case SVt_RV: |
6069 | del_XRV(SvANY(sv)); | |
6070 | break; | |
79072805 LW |
6071 | case SVt_PV: |
6072 | del_XPV(SvANY(sv)); | |
6073 | break; | |
6074 | case SVt_PVIV: | |
6075 | del_XPVIV(SvANY(sv)); | |
6076 | break; | |
6077 | case SVt_PVNV: | |
6078 | del_XPVNV(SvANY(sv)); | |
6079 | break; | |
6080 | case SVt_PVMG: | |
6081 | del_XPVMG(SvANY(sv)); | |
6082 | break; | |
6083 | case SVt_PVLV: | |
6084 | del_XPVLV(SvANY(sv)); | |
6085 | break; | |
6086 | case SVt_PVAV: | |
6087 | del_XPVAV(SvANY(sv)); | |
6088 | break; | |
6089 | case SVt_PVHV: | |
6090 | del_XPVHV(SvANY(sv)); | |
6091 | break; | |
6092 | case SVt_PVCV: | |
6093 | del_XPVCV(SvANY(sv)); | |
6094 | break; | |
6095 | case SVt_PVGV: | |
6096 | del_XPVGV(SvANY(sv)); | |
ec12f114 JPC |
6097 | /* code duplication for increased performance. */ |
6098 | SvFLAGS(sv) &= SVf_BREAK; | |
6099 | SvFLAGS(sv) |= SVTYPEMASK; | |
6100 | /* decrease refcount of the stash that owns this GV, if any */ | |
6101 | if (stash) | |
6102 | SvREFCNT_dec(stash); | |
6103 | return; /* not break, SvFLAGS reset already happened */ | |
79072805 LW |
6104 | case SVt_PVBM: |
6105 | del_XPVBM(SvANY(sv)); | |
6106 | break; | |
6107 | case SVt_PVFM: | |
6108 | del_XPVFM(SvANY(sv)); | |
6109 | break; | |
8990e307 LW |
6110 | case SVt_PVIO: |
6111 | del_XPVIO(SvANY(sv)); | |
6112 | break; | |
79072805 | 6113 | } |
a0d0e21e | 6114 | SvFLAGS(sv) &= SVf_BREAK; |
8990e307 | 6115 | SvFLAGS(sv) |= SVTYPEMASK; |
79072805 LW |
6116 | } |
6117 | ||
645c22ef DM |
6118 | /* |
6119 | =for apidoc sv_newref | |
6120 | ||
6121 | Increment an SV's reference count. Use the C<SvREFCNT_inc()> wrapper | |
6122 | instead. | |
6123 | ||
6124 | =cut | |
6125 | */ | |
6126 | ||
79072805 | 6127 | SV * |
864dbfa3 | 6128 | Perl_sv_newref(pTHX_ SV *sv) |
79072805 | 6129 | { |
463ee0b2 | 6130 | if (sv) |
4db098f4 | 6131 | (SvREFCNT(sv))++; |
79072805 LW |
6132 | return sv; |
6133 | } | |
6134 | ||
c461cf8f JH |
6135 | /* |
6136 | =for apidoc sv_free | |
6137 | ||
645c22ef DM |
6138 | Decrement an SV's reference count, and if it drops to zero, call |
6139 | C<sv_clear> to invoke destructors and free up any memory used by | |
6140 | the body; finally, deallocate the SV's head itself. | |
6141 | Normally called via a wrapper macro C<SvREFCNT_dec>. | |
c461cf8f JH |
6142 | |
6143 | =cut | |
6144 | */ | |
6145 | ||
79072805 | 6146 | void |
864dbfa3 | 6147 | Perl_sv_free(pTHX_ SV *sv) |
79072805 LW |
6148 | { |
6149 | if (!sv) | |
6150 | return; | |
a0d0e21e LW |
6151 | if (SvREFCNT(sv) == 0) { |
6152 | if (SvFLAGS(sv) & SVf_BREAK) | |
645c22ef DM |
6153 | /* this SV's refcnt has been artificially decremented to |
6154 | * trigger cleanup */ | |
a0d0e21e | 6155 | return; |
3280af22 | 6156 | if (PL_in_clean_all) /* All is fair */ |
1edc1566 | 6157 | return; |
d689ffdd JP |
6158 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
6159 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
6160 | SvREFCNT(sv) = (~(U32)0)/2; | |
6161 | return; | |
6162 | } | |
0453d815 | 6163 | if (ckWARN_d(WARN_INTERNAL)) |
d5dede04 | 6164 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
472d47bc SB |
6165 | "Attempt to free unreferenced scalar: SV 0x%"UVxf |
6166 | pTHX__FORMAT, PTR2UV(sv) pTHX__VALUE); | |
79072805 LW |
6167 | return; |
6168 | } | |
4db098f4 | 6169 | if (--(SvREFCNT(sv)) > 0) |
8990e307 | 6170 | return; |
8c4d3c90 NC |
6171 | Perl_sv_free2(aTHX_ sv); |
6172 | } | |
6173 | ||
6174 | void | |
6175 | Perl_sv_free2(pTHX_ SV *sv) | |
6176 | { | |
463ee0b2 LW |
6177 | #ifdef DEBUGGING |
6178 | if (SvTEMP(sv)) { | |
0453d815 | 6179 | if (ckWARN_d(WARN_DEBUGGING)) |
9014280d | 6180 | Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), |
472d47bc SB |
6181 | "Attempt to free temp prematurely: SV 0x%"UVxf |
6182 | pTHX__FORMAT, PTR2UV(sv) pTHX__VALUE); | |
79072805 | 6183 | return; |
79072805 | 6184 | } |
463ee0b2 | 6185 | #endif |
d689ffdd JP |
6186 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
6187 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
6188 | SvREFCNT(sv) = (~(U32)0)/2; | |
6189 | return; | |
6190 | } | |
79072805 | 6191 | sv_clear(sv); |
477f5d66 CS |
6192 | if (! SvREFCNT(sv)) |
6193 | del_SV(sv); | |
79072805 LW |
6194 | } |
6195 | ||
954c1994 GS |
6196 | /* |
6197 | =for apidoc sv_len | |
6198 | ||
645c22ef DM |
6199 | Returns the length of the string in the SV. Handles magic and type |
6200 | coercion. See also C<SvCUR>, which gives raw access to the xpv_cur slot. | |
954c1994 GS |
6201 | |
6202 | =cut | |
6203 | */ | |
6204 | ||
79072805 | 6205 | STRLEN |
864dbfa3 | 6206 | Perl_sv_len(pTHX_ register SV *sv) |
79072805 | 6207 | { |
463ee0b2 | 6208 | STRLEN len; |
79072805 LW |
6209 | |
6210 | if (!sv) | |
6211 | return 0; | |
6212 | ||
8990e307 | 6213 | if (SvGMAGICAL(sv)) |
565764a8 | 6214 | len = mg_length(sv); |
8990e307 | 6215 | else |
497b47a8 | 6216 | (void)SvPV(sv, len); |
463ee0b2 | 6217 | return len; |
79072805 LW |
6218 | } |
6219 | ||
c461cf8f JH |
6220 | /* |
6221 | =for apidoc sv_len_utf8 | |
6222 | ||
6223 | Returns the number of characters in the string in an SV, counting wide | |
1e54db1a | 6224 | UTF-8 bytes as a single character. Handles magic and type coercion. |
c461cf8f JH |
6225 | |
6226 | =cut | |
6227 | */ | |
6228 | ||
7e8c5dac HS |
6229 | /* |
6230 | * The length is cached in PERL_UTF8_magic, in the mg_len field. Also the | |
6231 | * mg_ptr is used, by sv_pos_u2b(), see the comments of S_utf8_mg_pos_init(). | |
6232 | * (Note that the mg_len is not the length of the mg_ptr field.) | |
7a5fa8a2 | 6233 | * |
7e8c5dac HS |
6234 | */ |
6235 | ||
a0ed51b3 | 6236 | STRLEN |
864dbfa3 | 6237 | Perl_sv_len_utf8(pTHX_ register SV *sv) |
a0ed51b3 | 6238 | { |
a0ed51b3 LW |
6239 | if (!sv) |
6240 | return 0; | |
6241 | ||
a0ed51b3 | 6242 | if (SvGMAGICAL(sv)) |
b76347f2 | 6243 | return mg_length(sv); |
a0ed51b3 | 6244 | else |
b76347f2 | 6245 | { |
7e8c5dac | 6246 | STRLEN len, ulen; |
b76347f2 | 6247 | U8 *s = (U8*)SvPV(sv, len); |
7e8c5dac HS |
6248 | MAGIC *mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_utf8) : 0; |
6249 | ||
e23c8137 | 6250 | if (mg && mg->mg_len != -1 && (mg->mg_len > 0 || len == 0)) { |
7e8c5dac | 6251 | ulen = mg->mg_len; |
e23c8137 JH |
6252 | #ifdef PERL_UTF8_CACHE_ASSERT |
6253 | assert(ulen == Perl_utf8_length(aTHX_ s, s + len)); | |
6254 | #endif | |
6255 | } | |
7e8c5dac HS |
6256 | else { |
6257 | ulen = Perl_utf8_length(aTHX_ s, s + len); | |
6258 | if (!mg && !SvREADONLY(sv)) { | |
6259 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
6260 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
6261 | assert(mg); | |
6262 | } | |
6263 | if (mg) | |
6264 | mg->mg_len = ulen; | |
6265 | } | |
6266 | return ulen; | |
6267 | } | |
6268 | } | |
6269 | ||
6270 | /* S_utf8_mg_pos_init() is used to initialize the mg_ptr field of | |
6271 | * a PERL_UTF8_magic. The mg_ptr is used to store the mapping | |
6272 | * between UTF-8 and byte offsets. There are two (substr offset and substr | |
6273 | * length, the i offset, PERL_MAGIC_UTF8_CACHESIZE) times two (UTF-8 offset | |
6274 | * and byte offset) cache positions. | |
6275 | * | |
6276 | * The mg_len field is used by sv_len_utf8(), see its comments. | |
6277 | * Note that the mg_len is not the length of the mg_ptr field. | |
6278 | * | |
6279 | */ | |
6280 | STATIC bool | |
6e551876 | 6281 | S_utf8_mg_pos_init(pTHX_ SV *sv, MAGIC **mgp, STRLEN **cachep, I32 i, I32 *offsetp, U8 *s, U8 *start) |
7e8c5dac | 6282 | { |
7a5fa8a2 | 6283 | bool found = FALSE; |
7e8c5dac HS |
6284 | |
6285 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
8f78557a AE |
6286 | if (!*mgp) |
6287 | *mgp = sv_magicext(sv, 0, PERL_MAGIC_utf8, &PL_vtbl_utf8, 0, 0); | |
7e8c5dac | 6288 | assert(*mgp); |
b76347f2 | 6289 | |
7e8c5dac HS |
6290 | if ((*mgp)->mg_ptr) |
6291 | *cachep = (STRLEN *) (*mgp)->mg_ptr; | |
6292 | else { | |
6293 | Newz(0, *cachep, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); | |
6294 | (*mgp)->mg_ptr = (char *) *cachep; | |
6295 | } | |
6296 | assert(*cachep); | |
6297 | ||
6298 | (*cachep)[i] = *offsetp; | |
6299 | (*cachep)[i+1] = s - start; | |
6300 | found = TRUE; | |
a0ed51b3 | 6301 | } |
7e8c5dac HS |
6302 | |
6303 | return found; | |
a0ed51b3 LW |
6304 | } |
6305 | ||
645c22ef | 6306 | /* |
7e8c5dac HS |
6307 | * S_utf8_mg_pos() is used to query and update mg_ptr field of |
6308 | * a PERL_UTF8_magic. The mg_ptr is used to store the mapping | |
6309 | * between UTF-8 and byte offsets. See also the comments of | |
6310 | * S_utf8_mg_pos_init(). | |
6311 | * | |
6312 | */ | |
6313 | STATIC bool | |
6e551876 | 6314 | 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 |
6315 | { |
6316 | bool found = FALSE; | |
6317 | ||
6318 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
6319 | if (!*mgp) | |
6320 | *mgp = mg_find(sv, PERL_MAGIC_utf8); | |
6321 | if (*mgp && (*mgp)->mg_ptr) { | |
6322 | *cachep = (STRLEN *) (*mgp)->mg_ptr; | |
e23c8137 | 6323 | ASSERT_UTF8_CACHE(*cachep); |
667208dd | 6324 | if ((*cachep)[i] == (STRLEN)uoff) /* An exact match. */ |
7a5fa8a2 | 6325 | found = TRUE; |
7e8c5dac HS |
6326 | else { /* We will skip to the right spot. */ |
6327 | STRLEN forw = 0; | |
6328 | STRLEN backw = 0; | |
6329 | U8* p = NULL; | |
6330 | ||
6331 | /* The assumption is that going backward is half | |
6332 | * the speed of going forward (that's where the | |
6333 | * 2 * backw in the below comes from). (The real | |
6334 | * figure of course depends on the UTF-8 data.) */ | |
6335 | ||
667208dd | 6336 | if ((*cachep)[i] > (STRLEN)uoff) { |
7e8c5dac | 6337 | forw = uoff; |
667208dd | 6338 | backw = (*cachep)[i] - (STRLEN)uoff; |
7e8c5dac HS |
6339 | |
6340 | if (forw < 2 * backw) | |
6341 | p = start; | |
6342 | else | |
6343 | p = start + (*cachep)[i+1]; | |
6344 | } | |
6345 | /* Try this only for the substr offset (i == 0), | |
6346 | * not for the substr length (i == 2). */ | |
6347 | else if (i == 0) { /* (*cachep)[i] < uoff */ | |
6348 | STRLEN ulen = sv_len_utf8(sv); | |
6349 | ||
667208dd JH |
6350 | if ((STRLEN)uoff < ulen) { |
6351 | forw = (STRLEN)uoff - (*cachep)[i]; | |
6352 | backw = ulen - (STRLEN)uoff; | |
7e8c5dac HS |
6353 | |
6354 | if (forw < 2 * backw) | |
6355 | p = start + (*cachep)[i+1]; | |
6356 | else | |
6357 | p = send; | |
6358 | } | |
6359 | ||
6360 | /* If the string is not long enough for uoff, | |
6361 | * we could extend it, but not at this low a level. */ | |
6362 | } | |
6363 | ||
6364 | if (p) { | |
6365 | if (forw < 2 * backw) { | |
6366 | while (forw--) | |
6367 | p += UTF8SKIP(p); | |
6368 | } | |
6369 | else { | |
6370 | while (backw--) { | |
6371 | p--; | |
6372 | while (UTF8_IS_CONTINUATION(*p)) | |
6373 | p--; | |
6374 | } | |
6375 | } | |
6376 | ||
6377 | /* Update the cache. */ | |
667208dd | 6378 | (*cachep)[i] = (STRLEN)uoff; |
7e8c5dac | 6379 | (*cachep)[i+1] = p - start; |
8f78557a AE |
6380 | |
6381 | /* Drop the stale "length" cache */ | |
6382 | if (i == 0) { | |
6383 | (*cachep)[2] = 0; | |
6384 | (*cachep)[3] = 0; | |
6385 | } | |
7a5fa8a2 | 6386 | |
7e8c5dac HS |
6387 | found = TRUE; |
6388 | } | |
6389 | } | |
6390 | if (found) { /* Setup the return values. */ | |
6391 | *offsetp = (*cachep)[i+1]; | |
6392 | *sp = start + *offsetp; | |
6393 | if (*sp >= send) { | |
6394 | *sp = send; | |
6395 | *offsetp = send - start; | |
6396 | } | |
6397 | else if (*sp < start) { | |
6398 | *sp = start; | |
6399 | *offsetp = 0; | |
6400 | } | |
6401 | } | |
6402 | } | |
e23c8137 JH |
6403 | #ifdef PERL_UTF8_CACHE_ASSERT |
6404 | if (found) { | |
6405 | U8 *s = start; | |
6406 | I32 n = uoff; | |
6407 | ||
6408 | while (n-- && s < send) | |
6409 | s += UTF8SKIP(s); | |
6410 | ||
6411 | if (i == 0) { | |
6412 | assert(*offsetp == s - start); | |
6413 | assert((*cachep)[0] == (STRLEN)uoff); | |
6414 | assert((*cachep)[1] == *offsetp); | |
6415 | } | |
6416 | ASSERT_UTF8_CACHE(*cachep); | |
6417 | } | |
6418 | #endif | |
7e8c5dac | 6419 | } |
e23c8137 | 6420 | |
7e8c5dac HS |
6421 | return found; |
6422 | } | |
7a5fa8a2 | 6423 | |
7e8c5dac | 6424 | /* |
645c22ef DM |
6425 | =for apidoc sv_pos_u2b |
6426 | ||
1e54db1a | 6427 | Converts the value pointed to by offsetp from a count of UTF-8 chars from |
645c22ef DM |
6428 | the start of the string, to a count of the equivalent number of bytes; if |
6429 | lenp is non-zero, it does the same to lenp, but this time starting from | |
6430 | the offset, rather than from the start of the string. Handles magic and | |
6431 | type coercion. | |
6432 | ||
6433 | =cut | |
6434 | */ | |
6435 | ||
7e8c5dac HS |
6436 | /* |
6437 | * sv_pos_u2b() uses, like sv_pos_b2u(), the mg_ptr of the potential | |
6438 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
6439 | * byte offsets. See also the comments of S_utf8_mg_pos(). | |
6440 | * | |
6441 | */ | |
6442 | ||
a0ed51b3 | 6443 | void |
864dbfa3 | 6444 | Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp) |
a0ed51b3 | 6445 | { |
dfe13c55 GS |
6446 | U8 *start; |
6447 | U8 *s; | |
a0ed51b3 | 6448 | STRLEN len; |
7e8c5dac HS |
6449 | STRLEN *cache = 0; |
6450 | STRLEN boffset = 0; | |
a0ed51b3 LW |
6451 | |
6452 | if (!sv) | |
6453 | return; | |
6454 | ||
dfe13c55 | 6455 | start = s = (U8*)SvPV(sv, len); |
7e8c5dac HS |
6456 | if (len) { |
6457 | I32 uoffset = *offsetp; | |
6458 | U8 *send = s + len; | |
6459 | MAGIC *mg = 0; | |
6460 | bool found = FALSE; | |
6461 | ||
bdf77a2a | 6462 | if (utf8_mg_pos(sv, &mg, &cache, 0, offsetp, *offsetp, &s, start, send)) |
7e8c5dac HS |
6463 | found = TRUE; |
6464 | if (!found && uoffset > 0) { | |
6465 | while (s < send && uoffset--) | |
6466 | s += UTF8SKIP(s); | |
6467 | if (s >= send) | |
6468 | s = send; | |
bdf77a2a | 6469 | if (utf8_mg_pos_init(sv, &mg, &cache, 0, offsetp, s, start)) |
7e8c5dac HS |
6470 | boffset = cache[1]; |
6471 | *offsetp = s - start; | |
6472 | } | |
6473 | if (lenp) { | |
6474 | found = FALSE; | |
6475 | start = s; | |
bdf77a2a | 6476 | if (utf8_mg_pos(sv, &mg, &cache, 2, lenp, *lenp + *offsetp, &s, start, send)) { |
7e8c5dac HS |
6477 | *lenp -= boffset; |
6478 | found = TRUE; | |
6479 | } | |
6480 | if (!found && *lenp > 0) { | |
6481 | I32 ulen = *lenp; | |
6482 | if (ulen > 0) | |
6483 | while (s < send && ulen--) | |
6484 | s += UTF8SKIP(s); | |
6485 | if (s >= send) | |
6486 | s = send; | |
a67d7df9 | 6487 | utf8_mg_pos_init(sv, &mg, &cache, 2, lenp, s, start); |
7e8c5dac HS |
6488 | } |
6489 | *lenp = s - start; | |
6490 | } | |
e23c8137 | 6491 | ASSERT_UTF8_CACHE(cache); |
7e8c5dac HS |
6492 | } |
6493 | else { | |
6494 | *offsetp = 0; | |
6495 | if (lenp) | |
6496 | *lenp = 0; | |
a0ed51b3 | 6497 | } |
e23c8137 | 6498 | |
a0ed51b3 LW |
6499 | return; |
6500 | } | |
6501 | ||
645c22ef DM |
6502 | /* |
6503 | =for apidoc sv_pos_b2u | |
6504 | ||
6505 | Converts the value pointed to by offsetp from a count of bytes from the | |
1e54db1a | 6506 | start of the string, to a count of the equivalent number of UTF-8 chars. |
645c22ef DM |
6507 | Handles magic and type coercion. |
6508 | ||
6509 | =cut | |
6510 | */ | |
6511 | ||
7e8c5dac HS |
6512 | /* |
6513 | * sv_pos_b2u() uses, like sv_pos_u2b(), the mg_ptr of the potential | |
6514 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
6515 | * byte offsets. See also the comments of S_utf8_mg_pos(). | |
6516 | * | |
6517 | */ | |
6518 | ||
a0ed51b3 | 6519 | void |
7e8c5dac | 6520 | Perl_sv_pos_b2u(pTHX_ register SV* sv, I32* offsetp) |
a0ed51b3 | 6521 | { |
7e8c5dac | 6522 | U8* s; |
a0ed51b3 LW |
6523 | STRLEN len; |
6524 | ||
6525 | if (!sv) | |
6526 | return; | |
6527 | ||
dfe13c55 | 6528 | s = (U8*)SvPV(sv, len); |
eb160463 | 6529 | if ((I32)len < *offsetp) |
a0dbb045 | 6530 | Perl_croak(aTHX_ "panic: sv_pos_b2u: bad byte offset"); |
7e8c5dac HS |
6531 | else { |
6532 | U8* send = s + *offsetp; | |
6533 | MAGIC* mg = NULL; | |
6534 | STRLEN *cache = NULL; | |
6535 | ||
6536 | len = 0; | |
6537 | ||
6538 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
6539 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
6540 | if (mg && mg->mg_ptr) { | |
6541 | cache = (STRLEN *) mg->mg_ptr; | |
c5661c80 | 6542 | if (cache[1] == (STRLEN)*offsetp) { |
7e8c5dac HS |
6543 | /* An exact match. */ |
6544 | *offsetp = cache[0]; | |
6545 | ||
6546 | return; | |
6547 | } | |
c5661c80 | 6548 | else if (cache[1] < (STRLEN)*offsetp) { |
7e8c5dac HS |
6549 | /* We already know part of the way. */ |
6550 | len = cache[0]; | |
6551 | s += cache[1]; | |
7a5fa8a2 | 6552 | /* Let the below loop do the rest. */ |
7e8c5dac HS |
6553 | } |
6554 | else { /* cache[1] > *offsetp */ | |
6555 | /* We already know all of the way, now we may | |
6556 | * be able to walk back. The same assumption | |
6557 | * is made as in S_utf8_mg_pos(), namely that | |
6558 | * walking backward is twice slower than | |
6559 | * walking forward. */ | |
6560 | STRLEN forw = *offsetp; | |
6561 | STRLEN backw = cache[1] - *offsetp; | |
6562 | ||
6563 | if (!(forw < 2 * backw)) { | |
6564 | U8 *p = s + cache[1]; | |
6565 | STRLEN ubackw = 0; | |
7a5fa8a2 | 6566 | |
a5b510f2 AE |
6567 | cache[1] -= backw; |
6568 | ||
7e8c5dac HS |
6569 | while (backw--) { |
6570 | p--; | |
0aeb64d0 | 6571 | while (UTF8_IS_CONTINUATION(*p)) { |
7e8c5dac | 6572 | p--; |
0aeb64d0 JH |
6573 | backw--; |
6574 | } | |
7e8c5dac HS |
6575 | ubackw++; |
6576 | } | |
6577 | ||
6578 | cache[0] -= ubackw; | |
0aeb64d0 | 6579 | *offsetp = cache[0]; |
a67d7df9 TS |
6580 | |
6581 | /* Drop the stale "length" cache */ | |
6582 | cache[2] = 0; | |
6583 | cache[3] = 0; | |
6584 | ||
0aeb64d0 | 6585 | return; |
7e8c5dac HS |
6586 | } |
6587 | } | |
6588 | } | |
e23c8137 | 6589 | ASSERT_UTF8_CACHE(cache); |
a0dbb045 | 6590 | } |
7e8c5dac HS |
6591 | |
6592 | while (s < send) { | |
6593 | STRLEN n = 1; | |
6594 | ||
6595 | /* Call utf8n_to_uvchr() to validate the sequence | |
6596 | * (unless a simple non-UTF character) */ | |
6597 | if (!UTF8_IS_INVARIANT(*s)) | |
6598 | utf8n_to_uvchr(s, UTF8SKIP(s), &n, 0); | |
6599 | if (n > 0) { | |
6600 | s += n; | |
6601 | len++; | |
6602 | } | |
6603 | else | |
6604 | break; | |
6605 | } | |
6606 | ||
6607 | if (!SvREADONLY(sv)) { | |
6608 | if (!mg) { | |
6609 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
6610 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
6611 | } | |
6612 | assert(mg); | |
6613 | ||
6614 | if (!mg->mg_ptr) { | |
979acdb5 | 6615 | Newz(0, cache, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); |
7e8c5dac HS |
6616 | mg->mg_ptr = (char *) cache; |
6617 | } | |
6618 | assert(cache); | |
6619 | ||
6620 | cache[0] = len; | |
6621 | cache[1] = *offsetp; | |
a67d7df9 TS |
6622 | /* Drop the stale "length" cache */ |
6623 | cache[2] = 0; | |
6624 | cache[3] = 0; | |
7e8c5dac HS |
6625 | } |
6626 | ||
6627 | *offsetp = len; | |
a0ed51b3 | 6628 | } |
a0ed51b3 LW |
6629 | return; |
6630 | } | |
6631 | ||
954c1994 GS |
6632 | /* |
6633 | =for apidoc sv_eq | |
6634 | ||
6635 | Returns a boolean indicating whether the strings in the two SVs are | |
645c22ef DM |
6636 | identical. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
6637 | coerce its args to strings if necessary. | |
954c1994 GS |
6638 | |
6639 | =cut | |
6640 | */ | |
6641 | ||
79072805 | 6642 | I32 |
e01b9e88 | 6643 | Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2) |
79072805 | 6644 | { |
e1ec3a88 | 6645 | const char *pv1; |
463ee0b2 | 6646 | STRLEN cur1; |
e1ec3a88 | 6647 | const char *pv2; |
463ee0b2 | 6648 | STRLEN cur2; |
e01b9e88 | 6649 | I32 eq = 0; |
553e1bcc AT |
6650 | char *tpv = Nullch; |
6651 | SV* svrecode = Nullsv; | |
79072805 | 6652 | |
e01b9e88 | 6653 | if (!sv1) { |
79072805 LW |
6654 | pv1 = ""; |
6655 | cur1 = 0; | |
6656 | } | |
463ee0b2 | 6657 | else |
e01b9e88 | 6658 | pv1 = SvPV(sv1, cur1); |
79072805 | 6659 | |
e01b9e88 SC |
6660 | if (!sv2){ |
6661 | pv2 = ""; | |
6662 | cur2 = 0; | |
92d29cee | 6663 | } |
e01b9e88 SC |
6664 | else |
6665 | pv2 = SvPV(sv2, cur2); | |
79072805 | 6666 | |
cf48d248 | 6667 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
6668 | /* Differing utf8ness. |
6669 | * Do not UTF8size the comparands as a side-effect. */ | |
6670 | if (PL_encoding) { | |
6671 | if (SvUTF8(sv1)) { | |
553e1bcc AT |
6672 | svrecode = newSVpvn(pv2, cur2); |
6673 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6674 | pv2 = SvPV(svrecode, cur2); | |
799ef3cb JH |
6675 | } |
6676 | else { | |
553e1bcc AT |
6677 | svrecode = newSVpvn(pv1, cur1); |
6678 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6679 | pv1 = SvPV(svrecode, cur1); | |
799ef3cb JH |
6680 | } |
6681 | /* Now both are in UTF-8. */ | |
0a1bd7ac DM |
6682 | if (cur1 != cur2) { |
6683 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6684 | return FALSE; |
0a1bd7ac | 6685 | } |
799ef3cb JH |
6686 | } |
6687 | else { | |
6688 | bool is_utf8 = TRUE; | |
6689 | ||
6690 | if (SvUTF8(sv1)) { | |
6691 | /* sv1 is the UTF-8 one, | |
6692 | * if is equal it must be downgrade-able */ | |
e1ec3a88 | 6693 | char *pv = (char*)bytes_from_utf8((const U8*)pv1, |
799ef3cb JH |
6694 | &cur1, &is_utf8); |
6695 | if (pv != pv1) | |
553e1bcc | 6696 | pv1 = tpv = pv; |
799ef3cb JH |
6697 | } |
6698 | else { | |
6699 | /* sv2 is the UTF-8 one, | |
6700 | * if is equal it must be downgrade-able */ | |
e1ec3a88 | 6701 | char *pv = (char *)bytes_from_utf8((const U8*)pv2, |
799ef3cb JH |
6702 | &cur2, &is_utf8); |
6703 | if (pv != pv2) | |
553e1bcc | 6704 | pv2 = tpv = pv; |
799ef3cb JH |
6705 | } |
6706 | if (is_utf8) { | |
6707 | /* Downgrade not possible - cannot be eq */ | |
bf694877 | 6708 | assert (tpv == 0); |
799ef3cb JH |
6709 | return FALSE; |
6710 | } | |
6711 | } | |
cf48d248 JH |
6712 | } |
6713 | ||
6714 | if (cur1 == cur2) | |
765f542d | 6715 | eq = (pv1 == pv2) || memEQ(pv1, pv2, cur1); |
e01b9e88 | 6716 | |
553e1bcc AT |
6717 | if (svrecode) |
6718 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6719 | |
553e1bcc AT |
6720 | if (tpv) |
6721 | Safefree(tpv); | |
cf48d248 | 6722 | |
e01b9e88 | 6723 | return eq; |
79072805 LW |
6724 | } |
6725 | ||
954c1994 GS |
6726 | /* |
6727 | =for apidoc sv_cmp | |
6728 | ||
6729 | Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the | |
6730 | string in C<sv1> is less than, equal to, or greater than the string in | |
645c22ef DM |
6731 | C<sv2>. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
6732 | coerce its args to strings if necessary. See also C<sv_cmp_locale>. | |
954c1994 GS |
6733 | |
6734 | =cut | |
6735 | */ | |
6736 | ||
79072805 | 6737 | I32 |
e01b9e88 | 6738 | Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2) |
79072805 | 6739 | { |
560a288e | 6740 | STRLEN cur1, cur2; |
e1ec3a88 AL |
6741 | const char *pv1, *pv2; |
6742 | char *tpv = Nullch; | |
cf48d248 | 6743 | I32 cmp; |
553e1bcc | 6744 | SV *svrecode = Nullsv; |
560a288e | 6745 | |
e01b9e88 SC |
6746 | if (!sv1) { |
6747 | pv1 = ""; | |
560a288e GS |
6748 | cur1 = 0; |
6749 | } | |
e01b9e88 SC |
6750 | else |
6751 | pv1 = SvPV(sv1, cur1); | |
560a288e | 6752 | |
553e1bcc | 6753 | if (!sv2) { |
e01b9e88 | 6754 | pv2 = ""; |
560a288e GS |
6755 | cur2 = 0; |
6756 | } | |
e01b9e88 SC |
6757 | else |
6758 | pv2 = SvPV(sv2, cur2); | |
79072805 | 6759 | |
cf48d248 | 6760 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
6761 | /* Differing utf8ness. |
6762 | * Do not UTF8size the comparands as a side-effect. */ | |
cf48d248 | 6763 | if (SvUTF8(sv1)) { |
799ef3cb | 6764 | if (PL_encoding) { |
553e1bcc AT |
6765 | svrecode = newSVpvn(pv2, cur2); |
6766 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6767 | pv2 = SvPV(svrecode, cur2); | |
799ef3cb JH |
6768 | } |
6769 | else { | |
e1ec3a88 | 6770 | pv2 = tpv = (char*)bytes_to_utf8((const U8*)pv2, &cur2); |
799ef3cb | 6771 | } |
cf48d248 JH |
6772 | } |
6773 | else { | |
799ef3cb | 6774 | if (PL_encoding) { |
553e1bcc AT |
6775 | svrecode = newSVpvn(pv1, cur1); |
6776 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6777 | pv1 = SvPV(svrecode, cur1); | |
799ef3cb JH |
6778 | } |
6779 | else { | |
e1ec3a88 | 6780 | pv1 = tpv = (char*)bytes_to_utf8((const U8*)pv1, &cur1); |
799ef3cb | 6781 | } |
cf48d248 JH |
6782 | } |
6783 | } | |
6784 | ||
e01b9e88 | 6785 | if (!cur1) { |
cf48d248 | 6786 | cmp = cur2 ? -1 : 0; |
e01b9e88 | 6787 | } else if (!cur2) { |
cf48d248 JH |
6788 | cmp = 1; |
6789 | } else { | |
e1ec3a88 | 6790 | const I32 retval = memcmp((const void*)pv1, (const void*)pv2, cur1 < cur2 ? cur1 : cur2); |
e01b9e88 SC |
6791 | |
6792 | if (retval) { | |
cf48d248 | 6793 | cmp = retval < 0 ? -1 : 1; |
e01b9e88 | 6794 | } else if (cur1 == cur2) { |
cf48d248 JH |
6795 | cmp = 0; |
6796 | } else { | |
6797 | cmp = cur1 < cur2 ? -1 : 1; | |
e01b9e88 | 6798 | } |
cf48d248 | 6799 | } |
16660edb | 6800 | |
553e1bcc AT |
6801 | if (svrecode) |
6802 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6803 | |
553e1bcc AT |
6804 | if (tpv) |
6805 | Safefree(tpv); | |
cf48d248 JH |
6806 | |
6807 | return cmp; | |
bbce6d69 | 6808 | } |
16660edb | 6809 | |
c461cf8f JH |
6810 | /* |
6811 | =for apidoc sv_cmp_locale | |
6812 | ||
645c22ef DM |
6813 | Compares the strings in two SVs in a locale-aware manner. Is UTF-8 and |
6814 | 'use bytes' aware, handles get magic, and will coerce its args to strings | |
6815 | if necessary. See also C<sv_cmp_locale>. See also C<sv_cmp>. | |
c461cf8f JH |
6816 | |
6817 | =cut | |
6818 | */ | |
6819 | ||
bbce6d69 | 6820 | I32 |
864dbfa3 | 6821 | Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2) |
bbce6d69 | 6822 | { |
36477c24 | 6823 | #ifdef USE_LOCALE_COLLATE |
16660edb | 6824 | |
bbce6d69 | 6825 | char *pv1, *pv2; |
6826 | STRLEN len1, len2; | |
6827 | I32 retval; | |
16660edb | 6828 | |
3280af22 | 6829 | if (PL_collation_standard) |
bbce6d69 | 6830 | goto raw_compare; |
16660edb | 6831 | |
bbce6d69 | 6832 | len1 = 0; |
8ac85365 | 6833 | pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL; |
bbce6d69 | 6834 | len2 = 0; |
8ac85365 | 6835 | pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL; |
16660edb | 6836 | |
bbce6d69 | 6837 | if (!pv1 || !len1) { |
6838 | if (pv2 && len2) | |
6839 | return -1; | |
6840 | else | |
6841 | goto raw_compare; | |
6842 | } | |
6843 | else { | |
6844 | if (!pv2 || !len2) | |
6845 | return 1; | |
6846 | } | |
16660edb | 6847 | |
bbce6d69 | 6848 | retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2); |
16660edb | 6849 | |
bbce6d69 | 6850 | if (retval) |
16660edb | 6851 | return retval < 0 ? -1 : 1; |
6852 | ||
bbce6d69 | 6853 | /* |
6854 | * When the result of collation is equality, that doesn't mean | |
6855 | * that there are no differences -- some locales exclude some | |
6856 | * characters from consideration. So to avoid false equalities, | |
6857 | * we use the raw string as a tiebreaker. | |
6858 | */ | |
16660edb | 6859 | |
bbce6d69 | 6860 | raw_compare: |
6861 | /* FALL THROUGH */ | |
16660edb | 6862 | |
36477c24 | 6863 | #endif /* USE_LOCALE_COLLATE */ |
16660edb | 6864 | |
bbce6d69 | 6865 | return sv_cmp(sv1, sv2); |
6866 | } | |
79072805 | 6867 | |
645c22ef | 6868 | |
36477c24 | 6869 | #ifdef USE_LOCALE_COLLATE |
645c22ef | 6870 | |
7a4c00b4 | 6871 | /* |
645c22ef DM |
6872 | =for apidoc sv_collxfrm |
6873 | ||
6874 | Add Collate Transform magic to an SV if it doesn't already have it. | |
6875 | ||
6876 | Any scalar variable may carry PERL_MAGIC_collxfrm magic that contains the | |
6877 | scalar data of the variable, but transformed to such a format that a normal | |
6878 | memory comparison can be used to compare the data according to the locale | |
6879 | settings. | |
6880 | ||
6881 | =cut | |
6882 | */ | |
6883 | ||
bbce6d69 | 6884 | char * |
864dbfa3 | 6885 | Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp) |
bbce6d69 | 6886 | { |
7a4c00b4 | 6887 | MAGIC *mg; |
16660edb | 6888 | |
14befaf4 | 6889 | mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_collxfrm) : (MAGIC *) NULL; |
3280af22 | 6890 | if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) { |
bbce6d69 | 6891 | char *s, *xf; |
6892 | STRLEN len, xlen; | |
6893 | ||
7a4c00b4 | 6894 | if (mg) |
6895 | Safefree(mg->mg_ptr); | |
bbce6d69 | 6896 | s = SvPV(sv, len); |
6897 | if ((xf = mem_collxfrm(s, len, &xlen))) { | |
ff0cee69 | 6898 | if (SvREADONLY(sv)) { |
6899 | SAVEFREEPV(xf); | |
6900 | *nxp = xlen; | |
3280af22 | 6901 | return xf + sizeof(PL_collation_ix); |
ff0cee69 | 6902 | } |
7a4c00b4 | 6903 | if (! mg) { |
14befaf4 DM |
6904 | sv_magic(sv, 0, PERL_MAGIC_collxfrm, 0, 0); |
6905 | mg = mg_find(sv, PERL_MAGIC_collxfrm); | |
7a4c00b4 | 6906 | assert(mg); |
bbce6d69 | 6907 | } |
7a4c00b4 | 6908 | mg->mg_ptr = xf; |
565764a8 | 6909 | mg->mg_len = xlen; |
7a4c00b4 | 6910 | } |
6911 | else { | |
ff0cee69 | 6912 | if (mg) { |
6913 | mg->mg_ptr = NULL; | |
565764a8 | 6914 | mg->mg_len = -1; |
ff0cee69 | 6915 | } |
bbce6d69 | 6916 | } |
6917 | } | |
7a4c00b4 | 6918 | if (mg && mg->mg_ptr) { |
565764a8 | 6919 | *nxp = mg->mg_len; |
3280af22 | 6920 | return mg->mg_ptr + sizeof(PL_collation_ix); |
bbce6d69 | 6921 | } |
6922 | else { | |
6923 | *nxp = 0; | |
6924 | return NULL; | |
16660edb | 6925 | } |
79072805 LW |
6926 | } |
6927 | ||
36477c24 | 6928 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 6929 | |
c461cf8f JH |
6930 | /* |
6931 | =for apidoc sv_gets | |
6932 | ||
6933 | Get a line from the filehandle and store it into the SV, optionally | |
6934 | appending to the currently-stored string. | |
6935 | ||
6936 | =cut | |
6937 | */ | |
6938 | ||
79072805 | 6939 | char * |
864dbfa3 | 6940 | Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append) |
79072805 | 6941 | { |
e1ec3a88 | 6942 | const char *rsptr; |
c07a80fd | 6943 | STRLEN rslen; |
6944 | register STDCHAR rslast; | |
6945 | register STDCHAR *bp; | |
6946 | register I32 cnt; | |
9c5ffd7c | 6947 | I32 i = 0; |
8bfdd7d9 | 6948 | I32 rspara = 0; |
e311fd51 | 6949 | I32 recsize; |
c07a80fd | 6950 | |
bc44a8a2 NC |
6951 | if (SvTHINKFIRST(sv)) |
6952 | sv_force_normal_flags(sv, append ? 0 : SV_COW_DROP_PV); | |
765f542d NC |
6953 | /* XXX. If you make this PVIV, then copy on write can copy scalars read |
6954 | from <>. | |
6955 | However, perlbench says it's slower, because the existing swipe code | |
6956 | is faster than copy on write. | |
6957 | Swings and roundabouts. */ | |
6fc92669 | 6958 | (void)SvUPGRADE(sv, SVt_PV); |
99491443 | 6959 | |
ff68c719 | 6960 | SvSCREAM_off(sv); |
efd8b2ba AE |
6961 | |
6962 | if (append) { | |
6963 | if (PerlIO_isutf8(fp)) { | |
6964 | if (!SvUTF8(sv)) { | |
6965 | sv_utf8_upgrade_nomg(sv); | |
6966 | sv_pos_u2b(sv,&append,0); | |
6967 | } | |
6968 | } else if (SvUTF8(sv)) { | |
6969 | SV *tsv = NEWSV(0,0); | |
6970 | sv_gets(tsv, fp, 0); | |
6971 | sv_utf8_upgrade_nomg(tsv); | |
6972 | SvCUR_set(sv,append); | |
6973 | sv_catsv(sv,tsv); | |
6974 | sv_free(tsv); | |
6975 | goto return_string_or_null; | |
6976 | } | |
6977 | } | |
6978 | ||
6979 | SvPOK_only(sv); | |
6980 | if (PerlIO_isutf8(fp)) | |
6981 | SvUTF8_on(sv); | |
c07a80fd | 6982 | |
923e4eb5 | 6983 | if (IN_PERL_COMPILETIME) { |
8bfdd7d9 HS |
6984 | /* we always read code in line mode */ |
6985 | rsptr = "\n"; | |
6986 | rslen = 1; | |
6987 | } | |
6988 | else if (RsSNARF(PL_rs)) { | |
7a5fa8a2 NIS |
6989 | /* If it is a regular disk file use size from stat() as estimate |
6990 | of amount we are going to read - may result in malloc-ing | |
6991 | more memory than we realy need if layers bellow reduce | |
e468d35b NIS |
6992 | size we read (e.g. CRLF or a gzip layer) |
6993 | */ | |
e311fd51 | 6994 | Stat_t st; |
e468d35b NIS |
6995 | if (!PerlLIO_fstat(PerlIO_fileno(fp), &st) && S_ISREG(st.st_mode)) { |
6996 | Off_t offset = PerlIO_tell(fp); | |
58f1856e | 6997 | if (offset != (Off_t) -1 && st.st_size + append > offset) { |
e468d35b NIS |
6998 | (void) SvGROW(sv, (STRLEN)((st.st_size - offset) + append + 1)); |
6999 | } | |
7000 | } | |
c07a80fd | 7001 | rsptr = NULL; |
7002 | rslen = 0; | |
7003 | } | |
3280af22 | 7004 | else if (RsRECORD(PL_rs)) { |
e311fd51 | 7005 | I32 bytesread; |
5b2b9c68 HM |
7006 | char *buffer; |
7007 | ||
7008 | /* Grab the size of the record we're getting */ | |
3280af22 | 7009 | recsize = SvIV(SvRV(PL_rs)); |
e311fd51 | 7010 | buffer = SvGROW(sv, (STRLEN)(recsize + append + 1)) + append; |
5b2b9c68 HM |
7011 | /* Go yank in */ |
7012 | #ifdef VMS | |
7013 | /* VMS wants read instead of fread, because fread doesn't respect */ | |
7014 | /* RMS record boundaries. This is not necessarily a good thing to be */ | |
e468d35b NIS |
7015 | /* doing, but we've got no other real choice - except avoid stdio |
7016 | as implementation - perhaps write a :vms layer ? | |
7017 | */ | |
5b2b9c68 HM |
7018 | bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize); |
7019 | #else | |
7020 | bytesread = PerlIO_read(fp, buffer, recsize); | |
7021 | #endif | |
27e6ca2d AE |
7022 | if (bytesread < 0) |
7023 | bytesread = 0; | |
e311fd51 | 7024 | SvCUR_set(sv, bytesread += append); |
e670df4e | 7025 | buffer[bytesread] = '\0'; |
efd8b2ba | 7026 | goto return_string_or_null; |
5b2b9c68 | 7027 | } |
3280af22 | 7028 | else if (RsPARA(PL_rs)) { |
c07a80fd | 7029 | rsptr = "\n\n"; |
7030 | rslen = 2; | |
8bfdd7d9 | 7031 | rspara = 1; |
c07a80fd | 7032 | } |
7d59b7e4 NIS |
7033 | else { |
7034 | /* Get $/ i.e. PL_rs into same encoding as stream wants */ | |
7035 | if (PerlIO_isutf8(fp)) { | |
7036 | rsptr = SvPVutf8(PL_rs, rslen); | |
7037 | } | |
7038 | else { | |
7039 | if (SvUTF8(PL_rs)) { | |
7040 | if (!sv_utf8_downgrade(PL_rs, TRUE)) { | |
7041 | Perl_croak(aTHX_ "Wide character in $/"); | |
7042 | } | |
7043 | } | |
7044 | rsptr = SvPV(PL_rs, rslen); | |
7045 | } | |
7046 | } | |
7047 | ||
c07a80fd | 7048 | rslast = rslen ? rsptr[rslen - 1] : '\0'; |
7049 | ||
8bfdd7d9 | 7050 | if (rspara) { /* have to do this both before and after */ |
79072805 | 7051 | do { /* to make sure file boundaries work right */ |
760ac839 | 7052 | if (PerlIO_eof(fp)) |
a0d0e21e | 7053 | return 0; |
760ac839 | 7054 | i = PerlIO_getc(fp); |
79072805 | 7055 | if (i != '\n') { |
a0d0e21e LW |
7056 | if (i == -1) |
7057 | return 0; | |
760ac839 | 7058 | PerlIO_ungetc(fp,i); |
79072805 LW |
7059 | break; |
7060 | } | |
7061 | } while (i != EOF); | |
7062 | } | |
c07a80fd | 7063 | |
760ac839 LW |
7064 | /* See if we know enough about I/O mechanism to cheat it ! */ |
7065 | ||
7066 | /* This used to be #ifdef test - it is made run-time test for ease | |
1c846c1f | 7067 | of abstracting out stdio interface. One call should be cheap |
760ac839 LW |
7068 | enough here - and may even be a macro allowing compile |
7069 | time optimization. | |
7070 | */ | |
7071 | ||
7072 | if (PerlIO_fast_gets(fp)) { | |
7073 | ||
7074 | /* | |
7075 | * We're going to steal some values from the stdio struct | |
7076 | * and put EVERYTHING in the innermost loop into registers. | |
7077 | */ | |
7078 | register STDCHAR *ptr; | |
7079 | STRLEN bpx; | |
7080 | I32 shortbuffered; | |
7081 | ||
16660edb | 7082 | #if defined(VMS) && defined(PERLIO_IS_STDIO) |
7083 | /* An ungetc()d char is handled separately from the regular | |
7084 | * buffer, so we getc() it back out and stuff it in the buffer. | |
7085 | */ | |
7086 | i = PerlIO_getc(fp); | |
7087 | if (i == EOF) return 0; | |
7088 | *(--((*fp)->_ptr)) = (unsigned char) i; | |
7089 | (*fp)->_cnt++; | |
7090 | #endif | |
c07a80fd | 7091 | |
c2960299 | 7092 | /* Here is some breathtakingly efficient cheating */ |
c07a80fd | 7093 | |
a20bf0c3 | 7094 | cnt = PerlIO_get_cnt(fp); /* get count into register */ |
e468d35b | 7095 | /* make sure we have the room */ |
7a5fa8a2 | 7096 | if ((I32)(SvLEN(sv) - append) <= cnt + 1) { |
e468d35b | 7097 | /* Not room for all of it |
7a5fa8a2 | 7098 | if we are looking for a separator and room for some |
e468d35b NIS |
7099 | */ |
7100 | if (rslen && cnt > 80 && (I32)SvLEN(sv) > append) { | |
7a5fa8a2 | 7101 | /* just process what we have room for */ |
79072805 LW |
7102 | shortbuffered = cnt - SvLEN(sv) + append + 1; |
7103 | cnt -= shortbuffered; | |
7104 | } | |
7105 | else { | |
7106 | shortbuffered = 0; | |
bbce6d69 | 7107 | /* remember that cnt can be negative */ |
eb160463 | 7108 | SvGROW(sv, (STRLEN)(append + (cnt <= 0 ? 2 : (cnt + 1)))); |
79072805 LW |
7109 | } |
7110 | } | |
7a5fa8a2 | 7111 | else |
79072805 | 7112 | shortbuffered = 0; |
c07a80fd | 7113 | bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */ |
a20bf0c3 | 7114 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); |
16660edb | 7115 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7116 | "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
16660edb | 7117 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
ba7abf9d | 7118 | "Screamer: entering: PerlIO * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 7119 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 7120 | PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0))); |
79072805 LW |
7121 | for (;;) { |
7122 | screamer: | |
93a17b20 | 7123 | if (cnt > 0) { |
c07a80fd | 7124 | if (rslen) { |
760ac839 LW |
7125 | while (cnt > 0) { /* this | eat */ |
7126 | cnt--; | |
c07a80fd | 7127 | if ((*bp++ = *ptr++) == rslast) /* really | dust */ |
7128 | goto thats_all_folks; /* screams | sed :-) */ | |
7129 | } | |
7130 | } | |
7131 | else { | |
1c846c1f NIS |
7132 | Copy(ptr, bp, cnt, char); /* this | eat */ |
7133 | bp += cnt; /* screams | dust */ | |
c07a80fd | 7134 | ptr += cnt; /* louder | sed :-) */ |
a5f75d66 | 7135 | cnt = 0; |
93a17b20 | 7136 | } |
79072805 LW |
7137 | } |
7138 | ||
748a9306 | 7139 | if (shortbuffered) { /* oh well, must extend */ |
79072805 LW |
7140 | cnt = shortbuffered; |
7141 | shortbuffered = 0; | |
c07a80fd | 7142 | bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */ |
79072805 LW |
7143 | SvCUR_set(sv, bpx); |
7144 | SvGROW(sv, SvLEN(sv) + append + cnt + 2); | |
c07a80fd | 7145 | bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */ |
79072805 LW |
7146 | continue; |
7147 | } | |
7148 | ||
16660edb | 7149 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 GS |
7150 | "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n", |
7151 | PTR2UV(ptr),(long)cnt)); | |
cc00df79 | 7152 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* deregisterize cnt and ptr */ |
ba7abf9d | 7153 | #if 0 |
16660edb | 7154 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7155 | "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 7156 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 7157 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 7158 | #endif |
1c846c1f | 7159 | /* This used to call 'filbuf' in stdio form, but as that behaves like |
774d564b | 7160 | getc when cnt <= 0 we use PerlIO_getc here to avoid introducing |
7161 | another abstraction. */ | |
760ac839 | 7162 | i = PerlIO_getc(fp); /* get more characters */ |
ba7abf9d | 7163 | #if 0 |
16660edb | 7164 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7165 | "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 7166 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 7167 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 7168 | #endif |
a20bf0c3 JH |
7169 | cnt = PerlIO_get_cnt(fp); |
7170 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */ | |
16660edb | 7171 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7172 | "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
79072805 | 7173 | |
748a9306 LW |
7174 | if (i == EOF) /* all done for ever? */ |
7175 | goto thats_really_all_folks; | |
7176 | ||
c07a80fd | 7177 | bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */ |
79072805 LW |
7178 | SvCUR_set(sv, bpx); |
7179 | SvGROW(sv, bpx + cnt + 2); | |
c07a80fd | 7180 | bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */ |
7181 | ||
eb160463 | 7182 | *bp++ = (STDCHAR)i; /* store character from PerlIO_getc */ |
79072805 | 7183 | |
c07a80fd | 7184 | if (rslen && (STDCHAR)i == rslast) /* all done for now? */ |
79072805 | 7185 | goto thats_all_folks; |
79072805 LW |
7186 | } |
7187 | ||
7188 | thats_all_folks: | |
eb160463 | 7189 | if ((rslen > 1 && (STRLEN)(bp - (STDCHAR*)SvPVX(sv)) < rslen) || |
36477c24 | 7190 | memNE((char*)bp - rslen, rsptr, rslen)) |
760ac839 | 7191 | goto screamer; /* go back to the fray */ |
79072805 LW |
7192 | thats_really_all_folks: |
7193 | if (shortbuffered) | |
7194 | cnt += shortbuffered; | |
16660edb | 7195 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7196 | "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
cc00df79 | 7197 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* put these back or we're in trouble */ |
16660edb | 7198 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7199 | "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 7200 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 7201 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
79072805 | 7202 | *bp = '\0'; |
760ac839 | 7203 | SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */ |
16660edb | 7204 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
fb73857a | 7205 | "Screamer: done, len=%ld, string=|%.*s|\n", |
7206 | (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv))); | |
760ac839 LW |
7207 | } |
7208 | else | |
79072805 | 7209 | { |
6edd2cd5 JH |
7210 | /*The big, slow, and stupid way. */ |
7211 | ||
7212 | /* Any stack-challenged places. */ | |
33d5f59c | 7213 | #if defined(EPOC) |
6edd2cd5 JH |
7214 | /* EPOC: need to work around SDK features. * |
7215 | * On WINS: MS VC5 generates calls to _chkstk, * | |
7216 | * if a "large" stack frame is allocated. * | |
7217 | * gcc on MARM does not generate calls like these. */ | |
7218 | # define USEHEAPINSTEADOFSTACK | |
7219 | #endif | |
7220 | ||
7221 | #ifdef USEHEAPINSTEADOFSTACK | |
7222 | STDCHAR *buf = 0; | |
7223 | New(0, buf, 8192, STDCHAR); | |
7224 | assert(buf); | |
4d2c4e07 | 7225 | #else |
6edd2cd5 | 7226 | STDCHAR buf[8192]; |
4d2c4e07 | 7227 | #endif |
79072805 | 7228 | |
760ac839 | 7229 | screamer2: |
c07a80fd | 7230 | if (rslen) { |
6867be6d | 7231 | const register STDCHAR *bpe = buf + sizeof(buf); |
760ac839 | 7232 | bp = buf; |
eb160463 | 7233 | while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = (STDCHAR)i) != rslast && bp < bpe) |
760ac839 LW |
7234 | ; /* keep reading */ |
7235 | cnt = bp - buf; | |
c07a80fd | 7236 | } |
7237 | else { | |
760ac839 | 7238 | cnt = PerlIO_read(fp,(char*)buf, sizeof(buf)); |
16660edb | 7239 | /* Accomodate broken VAXC compiler, which applies U8 cast to |
7240 | * both args of ?: operator, causing EOF to change into 255 | |
7241 | */ | |
37be0adf | 7242 | if (cnt > 0) |
cbe9e203 JH |
7243 | i = (U8)buf[cnt - 1]; |
7244 | else | |
37be0adf | 7245 | i = EOF; |
c07a80fd | 7246 | } |
79072805 | 7247 | |
cbe9e203 JH |
7248 | if (cnt < 0) |
7249 | cnt = 0; /* we do need to re-set the sv even when cnt <= 0 */ | |
7250 | if (append) | |
7251 | sv_catpvn(sv, (char *) buf, cnt); | |
7252 | else | |
7253 | sv_setpvn(sv, (char *) buf, cnt); | |
c07a80fd | 7254 | |
7255 | if (i != EOF && /* joy */ | |
7256 | (!rslen || | |
7257 | SvCUR(sv) < rslen || | |
36477c24 | 7258 | memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen))) |
79072805 LW |
7259 | { |
7260 | append = -1; | |
63e4d877 CS |
7261 | /* |
7262 | * If we're reading from a TTY and we get a short read, | |
7263 | * indicating that the user hit his EOF character, we need | |
7264 | * to notice it now, because if we try to read from the TTY | |
7265 | * again, the EOF condition will disappear. | |
7266 | * | |
7267 | * The comparison of cnt to sizeof(buf) is an optimization | |
7268 | * that prevents unnecessary calls to feof(). | |
7269 | * | |
7270 | * - jik 9/25/96 | |
7271 | */ | |
7272 | if (!(cnt < sizeof(buf) && PerlIO_eof(fp))) | |
7273 | goto screamer2; | |
79072805 | 7274 | } |
6edd2cd5 JH |
7275 | |
7276 | #ifdef USEHEAPINSTEADOFSTACK | |
7277 | Safefree(buf); | |
7278 | #endif | |
79072805 LW |
7279 | } |
7280 | ||
8bfdd7d9 | 7281 | if (rspara) { /* have to do this both before and after */ |
c07a80fd | 7282 | while (i != EOF) { /* to make sure file boundaries work right */ |
760ac839 | 7283 | i = PerlIO_getc(fp); |
79072805 | 7284 | if (i != '\n') { |
760ac839 | 7285 | PerlIO_ungetc(fp,i); |
79072805 LW |
7286 | break; |
7287 | } | |
7288 | } | |
7289 | } | |
c07a80fd | 7290 | |
efd8b2ba | 7291 | return_string_or_null: |
c07a80fd | 7292 | return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch; |
79072805 LW |
7293 | } |
7294 | ||
954c1994 GS |
7295 | /* |
7296 | =for apidoc sv_inc | |
7297 | ||
645c22ef DM |
7298 | Auto-increment of the value in the SV, doing string to numeric conversion |
7299 | if necessary. Handles 'get' magic. | |
954c1994 GS |
7300 | |
7301 | =cut | |
7302 | */ | |
7303 | ||
79072805 | 7304 | void |
864dbfa3 | 7305 | Perl_sv_inc(pTHX_ register SV *sv) |
79072805 LW |
7306 | { |
7307 | register char *d; | |
463ee0b2 | 7308 | int flags; |
79072805 LW |
7309 | |
7310 | if (!sv) | |
7311 | return; | |
b23a5f78 GB |
7312 | if (SvGMAGICAL(sv)) |
7313 | mg_get(sv); | |
ed6116ce | 7314 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
7315 | if (SvIsCOW(sv)) |
7316 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 7317 | if (SvREADONLY(sv)) { |
923e4eb5 | 7318 | if (IN_PERL_RUNTIME) |
cea2e8a9 | 7319 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 7320 | } |
a0d0e21e | 7321 | if (SvROK(sv)) { |
b5be31e9 | 7322 | IV i; |
9e7bc3e8 JD |
7323 | if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) |
7324 | return; | |
56431972 | 7325 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
7326 | sv_unref(sv); |
7327 | sv_setiv(sv, i); | |
a0d0e21e | 7328 | } |
ed6116ce | 7329 | } |
8990e307 | 7330 | flags = SvFLAGS(sv); |
28e5dec8 JH |
7331 | if ((flags & (SVp_NOK|SVp_IOK)) == SVp_NOK) { |
7332 | /* It's (privately or publicly) a float, but not tested as an | |
7333 | integer, so test it to see. */ | |
d460ef45 | 7334 | (void) SvIV(sv); |
28e5dec8 JH |
7335 | flags = SvFLAGS(sv); |
7336 | } | |
7337 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { | |
7338 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 7339 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 7340 | oops_its_int: |
59d8ce62 | 7341 | #endif |
25da4f38 IZ |
7342 | if (SvIsUV(sv)) { |
7343 | if (SvUVX(sv) == UV_MAX) | |
a1e868e7 | 7344 | sv_setnv(sv, UV_MAX_P1); |
25da4f38 IZ |
7345 | else |
7346 | (void)SvIOK_only_UV(sv); | |
7347 | ++SvUVX(sv); | |
7348 | } else { | |
7349 | if (SvIVX(sv) == IV_MAX) | |
28e5dec8 | 7350 | sv_setuv(sv, (UV)IV_MAX + 1); |
25da4f38 IZ |
7351 | else { |
7352 | (void)SvIOK_only(sv); | |
7353 | ++SvIVX(sv); | |
1c846c1f | 7354 | } |
55497cff | 7355 | } |
79072805 LW |
7356 | return; |
7357 | } | |
28e5dec8 JH |
7358 | if (flags & SVp_NOK) { |
7359 | (void)SvNOK_only(sv); | |
7360 | SvNVX(sv) += 1.0; | |
7361 | return; | |
7362 | } | |
7363 | ||
8990e307 | 7364 | if (!(flags & SVp_POK) || !*SvPVX(sv)) { |
28e5dec8 JH |
7365 | if ((flags & SVTYPEMASK) < SVt_PVIV) |
7366 | sv_upgrade(sv, SVt_IV); | |
7367 | (void)SvIOK_only(sv); | |
7368 | SvIVX(sv) = 1; | |
79072805 LW |
7369 | return; |
7370 | } | |
463ee0b2 | 7371 | d = SvPVX(sv); |
79072805 LW |
7372 | while (isALPHA(*d)) d++; |
7373 | while (isDIGIT(*d)) d++; | |
7374 | if (*d) { | |
28e5dec8 | 7375 | #ifdef PERL_PRESERVE_IVUV |
d1be9408 | 7376 | /* Got to punt this as an integer if needs be, but we don't issue |
28e5dec8 JH |
7377 | warnings. Probably ought to make the sv_iv_please() that does |
7378 | the conversion if possible, and silently. */ | |
c2988b20 | 7379 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
7380 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
7381 | /* Need to try really hard to see if it's an integer. | |
7382 | 9.22337203685478e+18 is an integer. | |
7383 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
7384 | so $a="9.22337203685478e+18"; $a+0; $a++ | |
7385 | needs to be the same as $a="9.22337203685478e+18"; $a++ | |
7386 | or we go insane. */ | |
d460ef45 | 7387 | |
28e5dec8 JH |
7388 | (void) sv_2iv(sv); |
7389 | if (SvIOK(sv)) | |
7390 | goto oops_its_int; | |
7391 | ||
7392 | /* sv_2iv *should* have made this an NV */ | |
7393 | if (flags & SVp_NOK) { | |
7394 | (void)SvNOK_only(sv); | |
7395 | SvNVX(sv) += 1.0; | |
7396 | return; | |
7397 | } | |
7398 | /* I don't think we can get here. Maybe I should assert this | |
7399 | And if we do get here I suspect that sv_setnv will croak. NWC | |
7400 | Fall through. */ | |
7401 | #if defined(USE_LONG_DOUBLE) | |
7402 | 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", | |
7403 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); | |
7404 | #else | |
1779d84d | 7405 | 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 |
7406 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); |
7407 | #endif | |
7408 | } | |
7409 | #endif /* PERL_PRESERVE_IVUV */ | |
7410 | sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); | |
79072805 LW |
7411 | return; |
7412 | } | |
7413 | d--; | |
463ee0b2 | 7414 | while (d >= SvPVX(sv)) { |
79072805 LW |
7415 | if (isDIGIT(*d)) { |
7416 | if (++*d <= '9') | |
7417 | return; | |
7418 | *(d--) = '0'; | |
7419 | } | |
7420 | else { | |
9d116dd7 JH |
7421 | #ifdef EBCDIC |
7422 | /* MKS: The original code here died if letters weren't consecutive. | |
7423 | * at least it didn't have to worry about non-C locales. The | |
7424 | * new code assumes that ('z'-'a')==('Z'-'A'), letters are | |
1c846c1f | 7425 | * arranged in order (although not consecutively) and that only |
9d116dd7 JH |
7426 | * [A-Za-z] are accepted by isALPHA in the C locale. |
7427 | */ | |
7428 | if (*d != 'z' && *d != 'Z') { | |
7429 | do { ++*d; } while (!isALPHA(*d)); | |
7430 | return; | |
7431 | } | |
7432 | *(d--) -= 'z' - 'a'; | |
7433 | #else | |
79072805 LW |
7434 | ++*d; |
7435 | if (isALPHA(*d)) | |
7436 | return; | |
7437 | *(d--) -= 'z' - 'a' + 1; | |
9d116dd7 | 7438 | #endif |
79072805 LW |
7439 | } |
7440 | } | |
7441 | /* oh,oh, the number grew */ | |
7442 | SvGROW(sv, SvCUR(sv) + 2); | |
7443 | SvCUR(sv)++; | |
463ee0b2 | 7444 | for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--) |
79072805 LW |
7445 | *d = d[-1]; |
7446 | if (isDIGIT(d[1])) | |
7447 | *d = '1'; | |
7448 | else | |
7449 | *d = d[1]; | |
7450 | } | |
7451 | ||
954c1994 GS |
7452 | /* |
7453 | =for apidoc sv_dec | |
7454 | ||
645c22ef DM |
7455 | Auto-decrement of the value in the SV, doing string to numeric conversion |
7456 | if necessary. Handles 'get' magic. | |
954c1994 GS |
7457 | |
7458 | =cut | |
7459 | */ | |
7460 | ||
79072805 | 7461 | void |
864dbfa3 | 7462 | Perl_sv_dec(pTHX_ register SV *sv) |
79072805 | 7463 | { |
463ee0b2 LW |
7464 | int flags; |
7465 | ||
79072805 LW |
7466 | if (!sv) |
7467 | return; | |
b23a5f78 GB |
7468 | if (SvGMAGICAL(sv)) |
7469 | mg_get(sv); | |
ed6116ce | 7470 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
7471 | if (SvIsCOW(sv)) |
7472 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 7473 | if (SvREADONLY(sv)) { |
923e4eb5 | 7474 | if (IN_PERL_RUNTIME) |
cea2e8a9 | 7475 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 7476 | } |
a0d0e21e | 7477 | if (SvROK(sv)) { |
b5be31e9 | 7478 | IV i; |
9e7bc3e8 JD |
7479 | if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) |
7480 | return; | |
56431972 | 7481 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
7482 | sv_unref(sv); |
7483 | sv_setiv(sv, i); | |
a0d0e21e | 7484 | } |
ed6116ce | 7485 | } |
28e5dec8 JH |
7486 | /* Unlike sv_inc we don't have to worry about string-never-numbers |
7487 | and keeping them magic. But we mustn't warn on punting */ | |
8990e307 | 7488 | flags = SvFLAGS(sv); |
28e5dec8 JH |
7489 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { |
7490 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 7491 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 7492 | oops_its_int: |
59d8ce62 | 7493 | #endif |
25da4f38 IZ |
7494 | if (SvIsUV(sv)) { |
7495 | if (SvUVX(sv) == 0) { | |
7496 | (void)SvIOK_only(sv); | |
7497 | SvIVX(sv) = -1; | |
7498 | } | |
7499 | else { | |
7500 | (void)SvIOK_only_UV(sv); | |
7501 | --SvUVX(sv); | |
1c846c1f | 7502 | } |
25da4f38 IZ |
7503 | } else { |
7504 | if (SvIVX(sv) == IV_MIN) | |
65202027 | 7505 | sv_setnv(sv, (NV)IV_MIN - 1.0); |
25da4f38 IZ |
7506 | else { |
7507 | (void)SvIOK_only(sv); | |
7508 | --SvIVX(sv); | |
1c846c1f | 7509 | } |
55497cff | 7510 | } |
7511 | return; | |
7512 | } | |
28e5dec8 JH |
7513 | if (flags & SVp_NOK) { |
7514 | SvNVX(sv) -= 1.0; | |
7515 | (void)SvNOK_only(sv); | |
7516 | return; | |
7517 | } | |
8990e307 | 7518 | if (!(flags & SVp_POK)) { |
4633a7c4 LW |
7519 | if ((flags & SVTYPEMASK) < SVt_PVNV) |
7520 | sv_upgrade(sv, SVt_NV); | |
463ee0b2 | 7521 | SvNVX(sv) = -1.0; |
a0d0e21e | 7522 | (void)SvNOK_only(sv); |
79072805 LW |
7523 | return; |
7524 | } | |
28e5dec8 JH |
7525 | #ifdef PERL_PRESERVE_IVUV |
7526 | { | |
c2988b20 | 7527 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
7528 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
7529 | /* Need to try really hard to see if it's an integer. | |
7530 | 9.22337203685478e+18 is an integer. | |
7531 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
7532 | so $a="9.22337203685478e+18"; $a+0; $a-- | |
7533 | needs to be the same as $a="9.22337203685478e+18"; $a-- | |
7534 | or we go insane. */ | |
d460ef45 | 7535 | |
28e5dec8 JH |
7536 | (void) sv_2iv(sv); |
7537 | if (SvIOK(sv)) | |
7538 | goto oops_its_int; | |
7539 | ||
7540 | /* sv_2iv *should* have made this an NV */ | |
7541 | if (flags & SVp_NOK) { | |
7542 | (void)SvNOK_only(sv); | |
7543 | SvNVX(sv) -= 1.0; | |
7544 | return; | |
7545 | } | |
7546 | /* I don't think we can get here. Maybe I should assert this | |
7547 | And if we do get here I suspect that sv_setnv will croak. NWC | |
7548 | Fall through. */ | |
7549 | #if defined(USE_LONG_DOUBLE) | |
7550 | 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", | |
7551 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); | |
7552 | #else | |
1779d84d | 7553 | 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 |
7554 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); |
7555 | #endif | |
7556 | } | |
7557 | } | |
7558 | #endif /* PERL_PRESERVE_IVUV */ | |
097ee67d | 7559 | sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */ |
79072805 LW |
7560 | } |
7561 | ||
954c1994 GS |
7562 | /* |
7563 | =for apidoc sv_mortalcopy | |
7564 | ||
645c22ef | 7565 | Creates a new SV which is a copy of the original SV (using C<sv_setsv>). |
d4236ebc DM |
7566 | The new SV is marked as mortal. It will be destroyed "soon", either by an |
7567 | explicit call to FREETMPS, or by an implicit call at places such as | |
7568 | statement boundaries. See also C<sv_newmortal> and C<sv_2mortal>. | |
954c1994 GS |
7569 | |
7570 | =cut | |
7571 | */ | |
7572 | ||
79072805 LW |
7573 | /* Make a string that will exist for the duration of the expression |
7574 | * evaluation. Actually, it may have to last longer than that, but | |
7575 | * hopefully we won't free it until it has been assigned to a | |
7576 | * permanent location. */ | |
7577 | ||
7578 | SV * | |
864dbfa3 | 7579 | Perl_sv_mortalcopy(pTHX_ SV *oldstr) |
79072805 | 7580 | { |
463ee0b2 | 7581 | register SV *sv; |
b881518d | 7582 | |
4561caa4 | 7583 | new_SV(sv); |
79072805 | 7584 | sv_setsv(sv,oldstr); |
677b06e3 GS |
7585 | EXTEND_MORTAL(1); |
7586 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 LW |
7587 | SvTEMP_on(sv); |
7588 | return sv; | |
7589 | } | |
7590 | ||
954c1994 GS |
7591 | /* |
7592 | =for apidoc sv_newmortal | |
7593 | ||
645c22ef | 7594 | Creates a new null SV which is mortal. The reference count of the SV is |
d4236ebc DM |
7595 | set to 1. It will be destroyed "soon", either by an explicit call to |
7596 | FREETMPS, or by an implicit call at places such as statement boundaries. | |
7597 | See also C<sv_mortalcopy> and C<sv_2mortal>. | |
954c1994 GS |
7598 | |
7599 | =cut | |
7600 | */ | |
7601 | ||
8990e307 | 7602 | SV * |
864dbfa3 | 7603 | Perl_sv_newmortal(pTHX) |
8990e307 LW |
7604 | { |
7605 | register SV *sv; | |
7606 | ||
4561caa4 | 7607 | new_SV(sv); |
8990e307 | 7608 | SvFLAGS(sv) = SVs_TEMP; |
677b06e3 GS |
7609 | EXTEND_MORTAL(1); |
7610 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
79072805 LW |
7611 | return sv; |
7612 | } | |
7613 | ||
954c1994 GS |
7614 | /* |
7615 | =for apidoc sv_2mortal | |
7616 | ||
d4236ebc DM |
7617 | Marks an existing SV as mortal. The SV will be destroyed "soon", either |
7618 | by an explicit call to FREETMPS, or by an implicit call at places such as | |
37d2ac18 NC |
7619 | statement boundaries. SvTEMP() is turned on which means that the SV's |
7620 | string buffer can be "stolen" if this SV is copied. See also C<sv_newmortal> | |
7621 | and C<sv_mortalcopy>. | |
954c1994 GS |
7622 | |
7623 | =cut | |
7624 | */ | |
7625 | ||
79072805 | 7626 | SV * |
864dbfa3 | 7627 | Perl_sv_2mortal(pTHX_ register SV *sv) |
79072805 LW |
7628 | { |
7629 | if (!sv) | |
7630 | return sv; | |
d689ffdd | 7631 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) |
11162842 | 7632 | return sv; |
677b06e3 GS |
7633 | EXTEND_MORTAL(1); |
7634 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 | 7635 | SvTEMP_on(sv); |
79072805 LW |
7636 | return sv; |
7637 | } | |
7638 | ||
954c1994 GS |
7639 | /* |
7640 | =for apidoc newSVpv | |
7641 | ||
7642 | Creates a new SV and copies a string into it. The reference count for the | |
7643 | SV is set to 1. If C<len> is zero, Perl will compute the length using | |
7644 | strlen(). For efficiency, consider using C<newSVpvn> instead. | |
7645 | ||
7646 | =cut | |
7647 | */ | |
7648 | ||
79072805 | 7649 | SV * |
864dbfa3 | 7650 | Perl_newSVpv(pTHX_ const char *s, STRLEN len) |
79072805 | 7651 | { |
463ee0b2 | 7652 | register SV *sv; |
79072805 | 7653 | |
4561caa4 | 7654 | new_SV(sv); |
79072805 LW |
7655 | if (!len) |
7656 | len = strlen(s); | |
7657 | sv_setpvn(sv,s,len); | |
7658 | return sv; | |
7659 | } | |
7660 | ||
954c1994 GS |
7661 | /* |
7662 | =for apidoc newSVpvn | |
7663 | ||
7664 | Creates a new SV and copies a string into it. The reference count for the | |
1c846c1f | 7665 | SV is set to 1. Note that if C<len> is zero, Perl will create a zero length |
954c1994 | 7666 | string. You are responsible for ensuring that the source string is at least |
9e09f5f2 | 7667 | C<len> bytes long. If the C<s> argument is NULL the new SV will be undefined. |
954c1994 GS |
7668 | |
7669 | =cut | |
7670 | */ | |
7671 | ||
9da1e3b5 | 7672 | SV * |
864dbfa3 | 7673 | Perl_newSVpvn(pTHX_ const char *s, STRLEN len) |
9da1e3b5 MUN |
7674 | { |
7675 | register SV *sv; | |
7676 | ||
7677 | new_SV(sv); | |
9da1e3b5 MUN |
7678 | sv_setpvn(sv,s,len); |
7679 | return sv; | |
7680 | } | |
7681 | ||
1c846c1f NIS |
7682 | /* |
7683 | =for apidoc newSVpvn_share | |
7684 | ||
645c22ef DM |
7685 | Creates a new SV with its SvPVX pointing to a shared string in the string |
7686 | table. If the string does not already exist in the table, it is created | |
7687 | first. Turns on READONLY and FAKE. The string's hash is stored in the UV | |
7688 | slot of the SV; if the C<hash> parameter is non-zero, that value is used; | |
7689 | otherwise the hash is computed. The idea here is that as the string table | |
7690 | is used for shared hash keys these strings will have SvPVX == HeKEY and | |
7691 | hash lookup will avoid string compare. | |
1c846c1f NIS |
7692 | |
7693 | =cut | |
7694 | */ | |
7695 | ||
7696 | SV * | |
c3654f1a | 7697 | Perl_newSVpvn_share(pTHX_ const char *src, I32 len, U32 hash) |
1c846c1f NIS |
7698 | { |
7699 | register SV *sv; | |
c3654f1a IH |
7700 | bool is_utf8 = FALSE; |
7701 | if (len < 0) { | |
77caf834 | 7702 | STRLEN tmplen = -len; |
c3654f1a | 7703 | is_utf8 = TRUE; |
75a54232 | 7704 | /* See the note in hv.c:hv_fetch() --jhi */ |
e1ec3a88 | 7705 | src = (char*)bytes_from_utf8((const U8*)src, &tmplen, &is_utf8); |
75a54232 JH |
7706 | len = tmplen; |
7707 | } | |
1c846c1f | 7708 | if (!hash) |
5afd6d42 | 7709 | PERL_HASH(hash, src, len); |
1c846c1f NIS |
7710 | new_SV(sv); |
7711 | sv_upgrade(sv, SVt_PVIV); | |
c3654f1a | 7712 | SvPVX(sv) = sharepvn(src, is_utf8?-len:len, hash); |
1c846c1f NIS |
7713 | SvCUR(sv) = len; |
7714 | SvUVX(sv) = hash; | |
7715 | SvLEN(sv) = 0; | |
7716 | SvREADONLY_on(sv); | |
7717 | SvFAKE_on(sv); | |
7718 | SvPOK_on(sv); | |
c3654f1a IH |
7719 | if (is_utf8) |
7720 | SvUTF8_on(sv); | |
1c846c1f NIS |
7721 | return sv; |
7722 | } | |
7723 | ||
645c22ef | 7724 | |
cea2e8a9 | 7725 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
7726 | |
7727 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
7728 | * version of the main function, (which may itself be aliased to us). | |
7729 | * Don't access this version directly. | |
7730 | */ | |
7731 | ||
46fc3d4c | 7732 | SV * |
cea2e8a9 | 7733 | Perl_newSVpvf_nocontext(const char* pat, ...) |
46fc3d4c | 7734 | { |
cea2e8a9 | 7735 | dTHX; |
46fc3d4c | 7736 | register SV *sv; |
7737 | va_list args; | |
46fc3d4c | 7738 | va_start(args, pat); |
c5be433b | 7739 | sv = vnewSVpvf(pat, &args); |
46fc3d4c | 7740 | va_end(args); |
7741 | return sv; | |
7742 | } | |
cea2e8a9 | 7743 | #endif |
46fc3d4c | 7744 | |
954c1994 GS |
7745 | /* |
7746 | =for apidoc newSVpvf | |
7747 | ||
645c22ef | 7748 | Creates a new SV and initializes it with the string formatted like |
954c1994 GS |
7749 | C<sprintf>. |
7750 | ||
7751 | =cut | |
7752 | */ | |
7753 | ||
cea2e8a9 GS |
7754 | SV * |
7755 | Perl_newSVpvf(pTHX_ const char* pat, ...) | |
7756 | { | |
7757 | register SV *sv; | |
7758 | va_list args; | |
cea2e8a9 | 7759 | va_start(args, pat); |
c5be433b | 7760 | sv = vnewSVpvf(pat, &args); |
cea2e8a9 GS |
7761 | va_end(args); |
7762 | return sv; | |
7763 | } | |
46fc3d4c | 7764 | |
645c22ef DM |
7765 | /* backend for newSVpvf() and newSVpvf_nocontext() */ |
7766 | ||
79072805 | 7767 | SV * |
c5be433b GS |
7768 | Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args) |
7769 | { | |
7770 | register SV *sv; | |
7771 | new_SV(sv); | |
7772 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
7773 | return sv; | |
7774 | } | |
7775 | ||
954c1994 GS |
7776 | /* |
7777 | =for apidoc newSVnv | |
7778 | ||
7779 | Creates a new SV and copies a floating point value into it. | |
7780 | The reference count for the SV is set to 1. | |
7781 | ||
7782 | =cut | |
7783 | */ | |
7784 | ||
c5be433b | 7785 | SV * |
65202027 | 7786 | Perl_newSVnv(pTHX_ NV n) |
79072805 | 7787 | { |
463ee0b2 | 7788 | register SV *sv; |
79072805 | 7789 | |
4561caa4 | 7790 | new_SV(sv); |
79072805 LW |
7791 | sv_setnv(sv,n); |
7792 | return sv; | |
7793 | } | |
7794 | ||
954c1994 GS |
7795 | /* |
7796 | =for apidoc newSViv | |
7797 | ||
7798 | Creates a new SV and copies an integer into it. The reference count for the | |
7799 | SV is set to 1. | |
7800 | ||
7801 | =cut | |
7802 | */ | |
7803 | ||
79072805 | 7804 | SV * |
864dbfa3 | 7805 | Perl_newSViv(pTHX_ IV i) |
79072805 | 7806 | { |
463ee0b2 | 7807 | register SV *sv; |
79072805 | 7808 | |
4561caa4 | 7809 | new_SV(sv); |
79072805 LW |
7810 | sv_setiv(sv,i); |
7811 | return sv; | |
7812 | } | |
7813 | ||
954c1994 | 7814 | /* |
1a3327fb JH |
7815 | =for apidoc newSVuv |
7816 | ||
7817 | Creates a new SV and copies an unsigned integer into it. | |
7818 | The reference count for the SV is set to 1. | |
7819 | ||
7820 | =cut | |
7821 | */ | |
7822 | ||
7823 | SV * | |
7824 | Perl_newSVuv(pTHX_ UV u) | |
7825 | { | |
7826 | register SV *sv; | |
7827 | ||
7828 | new_SV(sv); | |
7829 | sv_setuv(sv,u); | |
7830 | return sv; | |
7831 | } | |
7832 | ||
7833 | /* | |
954c1994 GS |
7834 | =for apidoc newRV_noinc |
7835 | ||
7836 | Creates an RV wrapper for an SV. The reference count for the original | |
7837 | SV is B<not> incremented. | |
7838 | ||
7839 | =cut | |
7840 | */ | |
7841 | ||
2304df62 | 7842 | SV * |
864dbfa3 | 7843 | Perl_newRV_noinc(pTHX_ SV *tmpRef) |
2304df62 AD |
7844 | { |
7845 | register SV *sv; | |
7846 | ||
4561caa4 | 7847 | new_SV(sv); |
2304df62 | 7848 | sv_upgrade(sv, SVt_RV); |
76e3520e | 7849 | SvTEMP_off(tmpRef); |
d689ffdd | 7850 | SvRV(sv) = tmpRef; |
2304df62 | 7851 | SvROK_on(sv); |
2304df62 AD |
7852 | return sv; |
7853 | } | |
7854 | ||
ff276b08 | 7855 | /* newRV_inc is the official function name to use now. |
645c22ef DM |
7856 | * newRV_inc is in fact #defined to newRV in sv.h |
7857 | */ | |
7858 | ||
5f05dabc | 7859 | SV * |
864dbfa3 | 7860 | Perl_newRV(pTHX_ SV *tmpRef) |
5f05dabc | 7861 | { |
5f6447b6 | 7862 | return newRV_noinc(SvREFCNT_inc(tmpRef)); |
5f05dabc | 7863 | } |
5f05dabc | 7864 | |
954c1994 GS |
7865 | /* |
7866 | =for apidoc newSVsv | |
7867 | ||
7868 | Creates a new SV which is an exact duplicate of the original SV. | |
645c22ef | 7869 | (Uses C<sv_setsv>). |
954c1994 GS |
7870 | |
7871 | =cut | |
7872 | */ | |
7873 | ||
79072805 | 7874 | SV * |
864dbfa3 | 7875 | Perl_newSVsv(pTHX_ register SV *old) |
79072805 | 7876 | { |
463ee0b2 | 7877 | register SV *sv; |
79072805 LW |
7878 | |
7879 | if (!old) | |
7880 | return Nullsv; | |
8990e307 | 7881 | if (SvTYPE(old) == SVTYPEMASK) { |
0453d815 | 7882 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 7883 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "semi-panic: attempt to dup freed string"); |
79072805 LW |
7884 | return Nullsv; |
7885 | } | |
4561caa4 | 7886 | new_SV(sv); |
e90aabeb NC |
7887 | /* SV_GMAGIC is the default for sv_setv() |
7888 | SV_NOSTEAL prevents TEMP buffers being, well, stolen, and saves games | |
7889 | with SvTEMP_off and SvTEMP_on round a call to sv_setsv. */ | |
7890 | sv_setsv_flags(sv, old, SV_GMAGIC | SV_NOSTEAL); | |
463ee0b2 | 7891 | return sv; |
79072805 LW |
7892 | } |
7893 | ||
645c22ef DM |
7894 | /* |
7895 | =for apidoc sv_reset | |
7896 | ||
7897 | Underlying implementation for the C<reset> Perl function. | |
7898 | Note that the perl-level function is vaguely deprecated. | |
7899 | ||
7900 | =cut | |
7901 | */ | |
7902 | ||
79072805 | 7903 | void |
e1ec3a88 | 7904 | Perl_sv_reset(pTHX_ register const char *s, HV *stash) |
79072805 LW |
7905 | { |
7906 | register HE *entry; | |
7907 | register GV *gv; | |
7908 | register SV *sv; | |
7909 | register I32 i; | |
7910 | register PMOP *pm; | |
7911 | register I32 max; | |
4802d5d7 | 7912 | char todo[PERL_UCHAR_MAX+1]; |
79072805 | 7913 | |
49d8d3a1 MB |
7914 | if (!stash) |
7915 | return; | |
7916 | ||
79072805 LW |
7917 | if (!*s) { /* reset ?? searches */ |
7918 | for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) { | |
48c036b1 | 7919 | pm->op_pmdynflags &= ~PMdf_USED; |
79072805 LW |
7920 | } |
7921 | return; | |
7922 | } | |
7923 | ||
7924 | /* reset variables */ | |
7925 | ||
7926 | if (!HvARRAY(stash)) | |
7927 | return; | |
463ee0b2 LW |
7928 | |
7929 | Zero(todo, 256, char); | |
79072805 | 7930 | while (*s) { |
4802d5d7 | 7931 | i = (unsigned char)*s; |
79072805 LW |
7932 | if (s[1] == '-') { |
7933 | s += 2; | |
7934 | } | |
4802d5d7 | 7935 | max = (unsigned char)*s++; |
79072805 | 7936 | for ( ; i <= max; i++) { |
463ee0b2 LW |
7937 | todo[i] = 1; |
7938 | } | |
a0d0e21e | 7939 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
79072805 | 7940 | for (entry = HvARRAY(stash)[i]; |
9e35f4b3 GS |
7941 | entry; |
7942 | entry = HeNEXT(entry)) | |
7943 | { | |
1edc1566 | 7944 | if (!todo[(U8)*HeKEY(entry)]) |
463ee0b2 | 7945 | continue; |
1edc1566 | 7946 | gv = (GV*)HeVAL(entry); |
79072805 | 7947 | sv = GvSV(gv); |
9e35f4b3 GS |
7948 | if (SvTHINKFIRST(sv)) { |
7949 | if (!SvREADONLY(sv) && SvROK(sv)) | |
7950 | sv_unref(sv); | |
7951 | continue; | |
7952 | } | |
0c34ef67 | 7953 | SvOK_off(sv); |
79072805 LW |
7954 | if (SvTYPE(sv) >= SVt_PV) { |
7955 | SvCUR_set(sv, 0); | |
463ee0b2 LW |
7956 | if (SvPVX(sv) != Nullch) |
7957 | *SvPVX(sv) = '\0'; | |
44a8e56a | 7958 | SvTAINT(sv); |
79072805 LW |
7959 | } |
7960 | if (GvAV(gv)) { | |
7961 | av_clear(GvAV(gv)); | |
7962 | } | |
44a8e56a | 7963 | if (GvHV(gv) && !HvNAME(GvHV(gv))) { |
463ee0b2 | 7964 | hv_clear(GvHV(gv)); |
2f42fcb0 | 7965 | #ifndef PERL_MICRO |
fa6a1c44 | 7966 | #ifdef USE_ENVIRON_ARRAY |
4efc5df6 GS |
7967 | if (gv == PL_envgv |
7968 | # ifdef USE_ITHREADS | |
7969 | && PL_curinterp == aTHX | |
7970 | # endif | |
7971 | ) | |
7972 | { | |
79072805 | 7973 | environ[0] = Nullch; |
4efc5df6 | 7974 | } |
a0d0e21e | 7975 | #endif |
2f42fcb0 | 7976 | #endif /* !PERL_MICRO */ |
79072805 LW |
7977 | } |
7978 | } | |
7979 | } | |
7980 | } | |
7981 | } | |
7982 | ||
645c22ef DM |
7983 | /* |
7984 | =for apidoc sv_2io | |
7985 | ||
7986 | Using various gambits, try to get an IO from an SV: the IO slot if its a | |
7987 | GV; or the recursive result if we're an RV; or the IO slot of the symbol | |
7988 | named after the PV if we're a string. | |
7989 | ||
7990 | =cut | |
7991 | */ | |
7992 | ||
46fc3d4c | 7993 | IO* |
864dbfa3 | 7994 | Perl_sv_2io(pTHX_ SV *sv) |
46fc3d4c | 7995 | { |
7996 | IO* io; | |
7997 | GV* gv; | |
7998 | ||
7999 | switch (SvTYPE(sv)) { | |
8000 | case SVt_PVIO: | |
8001 | io = (IO*)sv; | |
8002 | break; | |
8003 | case SVt_PVGV: | |
8004 | gv = (GV*)sv; | |
8005 | io = GvIO(gv); | |
8006 | if (!io) | |
cea2e8a9 | 8007 | Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv)); |
46fc3d4c | 8008 | break; |
8009 | default: | |
8010 | if (!SvOK(sv)) | |
cea2e8a9 | 8011 | Perl_croak(aTHX_ PL_no_usym, "filehandle"); |
46fc3d4c | 8012 | if (SvROK(sv)) |
8013 | return sv_2io(SvRV(sv)); | |
7a5fd60d | 8014 | gv = gv_fetchsv(sv, FALSE, SVt_PVIO); |
46fc3d4c | 8015 | if (gv) |
8016 | io = GvIO(gv); | |
8017 | else | |
8018 | io = 0; | |
8019 | if (!io) | |
35c1215d | 8020 | Perl_croak(aTHX_ "Bad filehandle: %"SVf, sv); |
46fc3d4c | 8021 | break; |
8022 | } | |
8023 | return io; | |
8024 | } | |
8025 | ||
645c22ef DM |
8026 | /* |
8027 | =for apidoc sv_2cv | |
8028 | ||
8029 | Using various gambits, try to get a CV from an SV; in addition, try if | |
8030 | possible to set C<*st> and C<*gvp> to the stash and GV associated with it. | |
8031 | ||
8032 | =cut | |
8033 | */ | |
8034 | ||
79072805 | 8035 | CV * |
864dbfa3 | 8036 | Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref) |
79072805 | 8037 | { |
c04a4dfe JH |
8038 | GV *gv = Nullgv; |
8039 | CV *cv = Nullcv; | |
79072805 LW |
8040 | |
8041 | if (!sv) | |
93a17b20 | 8042 | return *gvp = Nullgv, Nullcv; |
79072805 | 8043 | switch (SvTYPE(sv)) { |
79072805 LW |
8044 | case SVt_PVCV: |
8045 | *st = CvSTASH(sv); | |
8046 | *gvp = Nullgv; | |
8047 | return (CV*)sv; | |
8048 | case SVt_PVHV: | |
8049 | case SVt_PVAV: | |
8050 | *gvp = Nullgv; | |
8051 | return Nullcv; | |
8990e307 LW |
8052 | case SVt_PVGV: |
8053 | gv = (GV*)sv; | |
a0d0e21e | 8054 | *gvp = gv; |
8990e307 LW |
8055 | *st = GvESTASH(gv); |
8056 | goto fix_gv; | |
8057 | ||
79072805 | 8058 | default: |
a0d0e21e LW |
8059 | if (SvGMAGICAL(sv)) |
8060 | mg_get(sv); | |
8061 | if (SvROK(sv)) { | |
f5284f61 IZ |
8062 | SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */ |
8063 | tryAMAGICunDEREF(to_cv); | |
8064 | ||
62f274bf GS |
8065 | sv = SvRV(sv); |
8066 | if (SvTYPE(sv) == SVt_PVCV) { | |
8067 | cv = (CV*)sv; | |
8068 | *gvp = Nullgv; | |
8069 | *st = CvSTASH(cv); | |
8070 | return cv; | |
8071 | } | |
8072 | else if(isGV(sv)) | |
8073 | gv = (GV*)sv; | |
8074 | else | |
cea2e8a9 | 8075 | Perl_croak(aTHX_ "Not a subroutine reference"); |
a0d0e21e | 8076 | } |
62f274bf | 8077 | else if (isGV(sv)) |
79072805 LW |
8078 | gv = (GV*)sv; |
8079 | else | |
7a5fd60d | 8080 | gv = gv_fetchsv(sv, lref, SVt_PVCV); |
79072805 LW |
8081 | *gvp = gv; |
8082 | if (!gv) | |
8083 | return Nullcv; | |
8084 | *st = GvESTASH(gv); | |
8990e307 | 8085 | fix_gv: |
8ebc5c01 | 8086 | if (lref && !GvCVu(gv)) { |
4633a7c4 | 8087 | SV *tmpsv; |
748a9306 | 8088 | ENTER; |
4633a7c4 | 8089 | tmpsv = NEWSV(704,0); |
16660edb | 8090 | gv_efullname3(tmpsv, gv, Nullch); |
f6ec51f7 GS |
8091 | /* XXX this is probably not what they think they're getting. |
8092 | * It has the same effect as "sub name;", i.e. just a forward | |
8093 | * declaration! */ | |
774d564b | 8094 | newSUB(start_subparse(FALSE, 0), |
4633a7c4 LW |
8095 | newSVOP(OP_CONST, 0, tmpsv), |
8096 | Nullop, | |
8990e307 | 8097 | Nullop); |
748a9306 | 8098 | LEAVE; |
8ebc5c01 | 8099 | if (!GvCVu(gv)) |
35c1215d NC |
8100 | Perl_croak(aTHX_ "Unable to create sub named \"%"SVf"\"", |
8101 | sv); | |
8990e307 | 8102 | } |
8ebc5c01 | 8103 | return GvCVu(gv); |
79072805 LW |
8104 | } |
8105 | } | |
8106 | ||
c461cf8f JH |
8107 | /* |
8108 | =for apidoc sv_true | |
8109 | ||
8110 | Returns true if the SV has a true value by Perl's rules. | |
645c22ef DM |
8111 | Use the C<SvTRUE> macro instead, which may call C<sv_true()> or may |
8112 | instead use an in-line version. | |
c461cf8f JH |
8113 | |
8114 | =cut | |
8115 | */ | |
8116 | ||
79072805 | 8117 | I32 |
864dbfa3 | 8118 | Perl_sv_true(pTHX_ register SV *sv) |
79072805 | 8119 | { |
8990e307 LW |
8120 | if (!sv) |
8121 | return 0; | |
79072805 | 8122 | if (SvPOK(sv)) { |
e1ec3a88 | 8123 | const register XPV* tXpv; |
4e35701f | 8124 | if ((tXpv = (XPV*)SvANY(sv)) && |
c2f1de04 | 8125 | (tXpv->xpv_cur > 1 || |
4e35701f | 8126 | (tXpv->xpv_cur && *tXpv->xpv_pv != '0'))) |
79072805 LW |
8127 | return 1; |
8128 | else | |
8129 | return 0; | |
8130 | } | |
8131 | else { | |
8132 | if (SvIOK(sv)) | |
463ee0b2 | 8133 | return SvIVX(sv) != 0; |
79072805 LW |
8134 | else { |
8135 | if (SvNOK(sv)) | |
463ee0b2 | 8136 | return SvNVX(sv) != 0.0; |
79072805 | 8137 | else |
463ee0b2 | 8138 | return sv_2bool(sv); |
79072805 LW |
8139 | } |
8140 | } | |
8141 | } | |
79072805 | 8142 | |
645c22ef DM |
8143 | /* |
8144 | =for apidoc sv_iv | |
8145 | ||
8146 | A private implementation of the C<SvIVx> macro for compilers which can't | |
8147 | cope with complex macro expressions. Always use the macro instead. | |
8148 | ||
8149 | =cut | |
8150 | */ | |
8151 | ||
ff68c719 | 8152 | IV |
864dbfa3 | 8153 | Perl_sv_iv(pTHX_ register SV *sv) |
85e6fe83 | 8154 | { |
25da4f38 IZ |
8155 | if (SvIOK(sv)) { |
8156 | if (SvIsUV(sv)) | |
8157 | return (IV)SvUVX(sv); | |
ff68c719 | 8158 | return SvIVX(sv); |
25da4f38 | 8159 | } |
ff68c719 | 8160 | return sv_2iv(sv); |
85e6fe83 | 8161 | } |
85e6fe83 | 8162 | |
645c22ef DM |
8163 | /* |
8164 | =for apidoc sv_uv | |
8165 | ||
8166 | A private implementation of the C<SvUVx> macro for compilers which can't | |
8167 | cope with complex macro expressions. Always use the macro instead. | |
8168 | ||
8169 | =cut | |
8170 | */ | |
8171 | ||
ff68c719 | 8172 | UV |
864dbfa3 | 8173 | Perl_sv_uv(pTHX_ register SV *sv) |
ff68c719 | 8174 | { |
25da4f38 IZ |
8175 | if (SvIOK(sv)) { |
8176 | if (SvIsUV(sv)) | |
8177 | return SvUVX(sv); | |
8178 | return (UV)SvIVX(sv); | |
8179 | } | |
ff68c719 | 8180 | return sv_2uv(sv); |
8181 | } | |
85e6fe83 | 8182 | |
645c22ef DM |
8183 | /* |
8184 | =for apidoc sv_nv | |
8185 | ||
8186 | A private implementation of the C<SvNVx> macro for compilers which can't | |
8187 | cope with complex macro expressions. Always use the macro instead. | |
8188 | ||
8189 | =cut | |
8190 | */ | |
8191 | ||
65202027 | 8192 | NV |
864dbfa3 | 8193 | Perl_sv_nv(pTHX_ register SV *sv) |
79072805 | 8194 | { |
ff68c719 | 8195 | if (SvNOK(sv)) |
8196 | return SvNVX(sv); | |
8197 | return sv_2nv(sv); | |
79072805 | 8198 | } |
79072805 | 8199 | |
09540bc3 JH |
8200 | /* sv_pv() is now a macro using SvPV_nolen(); |
8201 | * this function provided for binary compatibility only | |
8202 | */ | |
8203 | ||
8204 | char * | |
8205 | Perl_sv_pv(pTHX_ SV *sv) | |
8206 | { | |
8207 | STRLEN n_a; | |
8208 | ||
8209 | if (SvPOK(sv)) | |
8210 | return SvPVX(sv); | |
8211 | ||
8212 | return sv_2pv(sv, &n_a); | |
8213 | } | |
8214 | ||
645c22ef DM |
8215 | /* |
8216 | =for apidoc sv_pv | |
8217 | ||
baca2b92 | 8218 | Use the C<SvPV_nolen> macro instead |
645c22ef | 8219 | |
645c22ef DM |
8220 | =for apidoc sv_pvn |
8221 | ||
8222 | A private implementation of the C<SvPV> macro for compilers which can't | |
8223 | cope with complex macro expressions. Always use the macro instead. | |
8224 | ||
8225 | =cut | |
8226 | */ | |
8227 | ||
1fa8b10d | 8228 | char * |
864dbfa3 | 8229 | Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp) |
79072805 | 8230 | { |
85e6fe83 LW |
8231 | if (SvPOK(sv)) { |
8232 | *lp = SvCUR(sv); | |
a0d0e21e | 8233 | return SvPVX(sv); |
85e6fe83 | 8234 | } |
463ee0b2 | 8235 | return sv_2pv(sv, lp); |
79072805 | 8236 | } |
79072805 | 8237 | |
6e9d1081 NC |
8238 | |
8239 | char * | |
8240 | Perl_sv_pvn_nomg(pTHX_ register SV *sv, STRLEN *lp) | |
8241 | { | |
8242 | if (SvPOK(sv)) { | |
8243 | *lp = SvCUR(sv); | |
8244 | return SvPVX(sv); | |
8245 | } | |
8246 | return sv_2pv_flags(sv, lp, 0); | |
8247 | } | |
8248 | ||
09540bc3 JH |
8249 | /* sv_pvn_force() is now a macro using Perl_sv_pvn_force_flags(); |
8250 | * this function provided for binary compatibility only | |
8251 | */ | |
8252 | ||
8253 | char * | |
8254 | Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp) | |
8255 | { | |
8256 | return sv_pvn_force_flags(sv, lp, SV_GMAGIC); | |
8257 | } | |
8258 | ||
c461cf8f JH |
8259 | /* |
8260 | =for apidoc sv_pvn_force | |
8261 | ||
8262 | Get a sensible string out of the SV somehow. | |
645c22ef DM |
8263 | A private implementation of the C<SvPV_force> macro for compilers which |
8264 | can't cope with complex macro expressions. Always use the macro instead. | |
c461cf8f | 8265 | |
8d6d96c1 HS |
8266 | =for apidoc sv_pvn_force_flags |
8267 | ||
8268 | Get a sensible string out of the SV somehow. | |
8269 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<sv> if | |
8270 | appropriate, else not. C<sv_pvn_force> and C<sv_pvn_force_nomg> are | |
8271 | implemented in terms of this function. | |
645c22ef DM |
8272 | You normally want to use the various wrapper macros instead: see |
8273 | C<SvPV_force> and C<SvPV_force_nomg> | |
8d6d96c1 HS |
8274 | |
8275 | =cut | |
8276 | */ | |
8277 | ||
8278 | char * | |
8279 | Perl_sv_pvn_force_flags(pTHX_ SV *sv, STRLEN *lp, I32 flags) | |
8280 | { | |
c04a4dfe | 8281 | char *s = NULL; |
a0d0e21e | 8282 | |
6fc92669 | 8283 | if (SvTHINKFIRST(sv) && !SvROK(sv)) |
765f542d | 8284 | sv_force_normal_flags(sv, 0); |
1c846c1f | 8285 | |
a0d0e21e LW |
8286 | if (SvPOK(sv)) { |
8287 | *lp = SvCUR(sv); | |
8288 | } | |
8289 | else { | |
748a9306 | 8290 | if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) { |
cea2e8a9 | 8291 | Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0), |
53e06cf0 | 8292 | OP_NAME(PL_op)); |
a0d0e21e | 8293 | } |
4633a7c4 | 8294 | else |
8d6d96c1 | 8295 | s = sv_2pv_flags(sv, lp, flags); |
a0d0e21e LW |
8296 | if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */ |
8297 | STRLEN len = *lp; | |
1c846c1f | 8298 | |
a0d0e21e LW |
8299 | if (SvROK(sv)) |
8300 | sv_unref(sv); | |
8301 | (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */ | |
8302 | SvGROW(sv, len + 1); | |
8303 | Move(s,SvPVX(sv),len,char); | |
8304 | SvCUR_set(sv, len); | |
8305 | *SvEND(sv) = '\0'; | |
8306 | } | |
8307 | if (!SvPOK(sv)) { | |
8308 | SvPOK_on(sv); /* validate pointer */ | |
8309 | SvTAINT(sv); | |
1d7c1841 GS |
8310 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
8311 | PTR2UV(sv),SvPVX(sv))); | |
a0d0e21e LW |
8312 | } |
8313 | } | |
8314 | return SvPVX(sv); | |
8315 | } | |
8316 | ||
09540bc3 JH |
8317 | /* sv_pvbyte () is now a macro using Perl_sv_2pv_flags(); |
8318 | * this function provided for binary compatibility only | |
8319 | */ | |
8320 | ||
8321 | char * | |
8322 | Perl_sv_pvbyte(pTHX_ SV *sv) | |
8323 | { | |
8324 | sv_utf8_downgrade(sv,0); | |
8325 | return sv_pv(sv); | |
8326 | } | |
8327 | ||
645c22ef DM |
8328 | /* |
8329 | =for apidoc sv_pvbyte | |
8330 | ||
baca2b92 | 8331 | Use C<SvPVbyte_nolen> instead. |
645c22ef | 8332 | |
645c22ef DM |
8333 | =for apidoc sv_pvbyten |
8334 | ||
8335 | A private implementation of the C<SvPVbyte> macro for compilers | |
8336 | which can't cope with complex macro expressions. Always use the macro | |
8337 | instead. | |
8338 | ||
8339 | =cut | |
8340 | */ | |
8341 | ||
7340a771 GS |
8342 | char * |
8343 | Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp) | |
8344 | { | |
ffebcc3e | 8345 | sv_utf8_downgrade(sv,0); |
7340a771 GS |
8346 | return sv_pvn(sv,lp); |
8347 | } | |
8348 | ||
645c22ef DM |
8349 | /* |
8350 | =for apidoc sv_pvbyten_force | |
8351 | ||
8352 | A private implementation of the C<SvPVbytex_force> macro for compilers | |
8353 | which can't cope with complex macro expressions. Always use the macro | |
8354 | instead. | |
8355 | ||
8356 | =cut | |
8357 | */ | |
8358 | ||
7340a771 GS |
8359 | char * |
8360 | Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp) | |
8361 | { | |
46ec2f14 | 8362 | sv_pvn_force(sv,lp); |
ffebcc3e | 8363 | sv_utf8_downgrade(sv,0); |
46ec2f14 TS |
8364 | *lp = SvCUR(sv); |
8365 | return SvPVX(sv); | |
7340a771 GS |
8366 | } |
8367 | ||
09540bc3 JH |
8368 | /* sv_pvutf8 () is now a macro using Perl_sv_2pv_flags(); |
8369 | * this function provided for binary compatibility only | |
8370 | */ | |
8371 | ||
8372 | char * | |
8373 | Perl_sv_pvutf8(pTHX_ SV *sv) | |
8374 | { | |
8375 | sv_utf8_upgrade(sv); | |
8376 | return sv_pv(sv); | |
8377 | } | |
8378 | ||
645c22ef DM |
8379 | /* |
8380 | =for apidoc sv_pvutf8 | |
8381 | ||
baca2b92 | 8382 | Use the C<SvPVutf8_nolen> macro instead |
645c22ef | 8383 | |
645c22ef DM |
8384 | =for apidoc sv_pvutf8n |
8385 | ||
8386 | A private implementation of the C<SvPVutf8> macro for compilers | |
8387 | which can't cope with complex macro expressions. Always use the macro | |
8388 | instead. | |
8389 | ||
8390 | =cut | |
8391 | */ | |
8392 | ||
7340a771 GS |
8393 | char * |
8394 | Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp) | |
8395 | { | |
560a288e | 8396 | sv_utf8_upgrade(sv); |
7340a771 GS |
8397 | return sv_pvn(sv,lp); |
8398 | } | |
8399 | ||
c461cf8f JH |
8400 | /* |
8401 | =for apidoc sv_pvutf8n_force | |
8402 | ||
645c22ef DM |
8403 | A private implementation of the C<SvPVutf8_force> macro for compilers |
8404 | which can't cope with complex macro expressions. Always use the macro | |
8405 | instead. | |
c461cf8f JH |
8406 | |
8407 | =cut | |
8408 | */ | |
8409 | ||
7340a771 GS |
8410 | char * |
8411 | Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp) | |
8412 | { | |
46ec2f14 | 8413 | sv_pvn_force(sv,lp); |
560a288e | 8414 | sv_utf8_upgrade(sv); |
46ec2f14 TS |
8415 | *lp = SvCUR(sv); |
8416 | return SvPVX(sv); | |
7340a771 GS |
8417 | } |
8418 | ||
c461cf8f JH |
8419 | /* |
8420 | =for apidoc sv_reftype | |
8421 | ||
8422 | Returns a string describing what the SV is a reference to. | |
8423 | ||
8424 | =cut | |
8425 | */ | |
8426 | ||
1cb0ed9b | 8427 | char * |
bfed75c6 | 8428 | Perl_sv_reftype(pTHX_ const SV *sv, int ob) |
a0d0e21e | 8429 | { |
07409e01 NC |
8430 | /* The fact that I don't need to downcast to char * everywhere, only in ?: |
8431 | inside return suggests a const propagation bug in g++. */ | |
c86bf373 | 8432 | if (ob && SvOBJECT(sv)) { |
1cb0ed9b | 8433 | char *name = HvNAME(SvSTASH(sv)); |
07409e01 | 8434 | return name ? name : (char *) "__ANON__"; |
c86bf373 | 8435 | } |
a0d0e21e LW |
8436 | else { |
8437 | switch (SvTYPE(sv)) { | |
8438 | case SVt_NULL: | |
8439 | case SVt_IV: | |
8440 | case SVt_NV: | |
8441 | case SVt_RV: | |
8442 | case SVt_PV: | |
8443 | case SVt_PVIV: | |
8444 | case SVt_PVNV: | |
8445 | case SVt_PVMG: | |
8446 | case SVt_PVBM: | |
1cb0ed9b | 8447 | if (SvVOK(sv)) |
439cb1c4 | 8448 | return "VSTRING"; |
a0d0e21e LW |
8449 | if (SvROK(sv)) |
8450 | return "REF"; | |
8451 | else | |
8452 | return "SCALAR"; | |
1cb0ed9b | 8453 | |
07409e01 | 8454 | case SVt_PVLV: return (char *) (SvROK(sv) ? "REF" |
be65207d DM |
8455 | /* tied lvalues should appear to be |
8456 | * scalars for backwards compatitbility */ | |
8457 | : (LvTYPE(sv) == 't' || LvTYPE(sv) == 'T') | |
07409e01 | 8458 | ? "SCALAR" : "LVALUE"); |
a0d0e21e LW |
8459 | case SVt_PVAV: return "ARRAY"; |
8460 | case SVt_PVHV: return "HASH"; | |
8461 | case SVt_PVCV: return "CODE"; | |
8462 | case SVt_PVGV: return "GLOB"; | |
1d2dff63 | 8463 | case SVt_PVFM: return "FORMAT"; |
27f9d8f3 | 8464 | case SVt_PVIO: return "IO"; |
a0d0e21e LW |
8465 | default: return "UNKNOWN"; |
8466 | } | |
8467 | } | |
8468 | } | |
8469 | ||
954c1994 GS |
8470 | /* |
8471 | =for apidoc sv_isobject | |
8472 | ||
8473 | Returns a boolean indicating whether the SV is an RV pointing to a blessed | |
8474 | object. If the SV is not an RV, or if the object is not blessed, then this | |
8475 | will return false. | |
8476 | ||
8477 | =cut | |
8478 | */ | |
8479 | ||
463ee0b2 | 8480 | int |
864dbfa3 | 8481 | Perl_sv_isobject(pTHX_ SV *sv) |
85e6fe83 | 8482 | { |
68dc0745 | 8483 | if (!sv) |
8484 | return 0; | |
8485 | if (SvGMAGICAL(sv)) | |
8486 | mg_get(sv); | |
85e6fe83 LW |
8487 | if (!SvROK(sv)) |
8488 | return 0; | |
8489 | sv = (SV*)SvRV(sv); | |
8490 | if (!SvOBJECT(sv)) | |
8491 | return 0; | |
8492 | return 1; | |
8493 | } | |
8494 | ||
954c1994 GS |
8495 | /* |
8496 | =for apidoc sv_isa | |
8497 | ||
8498 | Returns a boolean indicating whether the SV is blessed into the specified | |
8499 | class. This does not check for subtypes; use C<sv_derived_from> to verify | |
8500 | an inheritance relationship. | |
8501 | ||
8502 | =cut | |
8503 | */ | |
8504 | ||
85e6fe83 | 8505 | int |
864dbfa3 | 8506 | Perl_sv_isa(pTHX_ SV *sv, const char *name) |
463ee0b2 | 8507 | { |
68dc0745 | 8508 | if (!sv) |
8509 | return 0; | |
8510 | if (SvGMAGICAL(sv)) | |
8511 | mg_get(sv); | |
ed6116ce | 8512 | if (!SvROK(sv)) |
463ee0b2 | 8513 | return 0; |
ed6116ce LW |
8514 | sv = (SV*)SvRV(sv); |
8515 | if (!SvOBJECT(sv)) | |
463ee0b2 | 8516 | return 0; |
e27ad1f2 AV |
8517 | if (!HvNAME(SvSTASH(sv))) |
8518 | return 0; | |
463ee0b2 LW |
8519 | |
8520 | return strEQ(HvNAME(SvSTASH(sv)), name); | |
8521 | } | |
8522 | ||
954c1994 GS |
8523 | /* |
8524 | =for apidoc newSVrv | |
8525 | ||
8526 | Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then | |
8527 | it will be upgraded to one. If C<classname> is non-null then the new SV will | |
8528 | be blessed in the specified package. The new SV is returned and its | |
8529 | reference count is 1. | |
8530 | ||
8531 | =cut | |
8532 | */ | |
8533 | ||
463ee0b2 | 8534 | SV* |
864dbfa3 | 8535 | Perl_newSVrv(pTHX_ SV *rv, const char *classname) |
463ee0b2 | 8536 | { |
463ee0b2 LW |
8537 | SV *sv; |
8538 | ||
4561caa4 | 8539 | new_SV(sv); |
51cf62d8 | 8540 | |
765f542d | 8541 | SV_CHECK_THINKFIRST_COW_DROP(rv); |
51cf62d8 | 8542 | SvAMAGIC_off(rv); |
51cf62d8 | 8543 | |
0199fce9 JD |
8544 | if (SvTYPE(rv) >= SVt_PVMG) { |
8545 | U32 refcnt = SvREFCNT(rv); | |
8546 | SvREFCNT(rv) = 0; | |
8547 | sv_clear(rv); | |
8548 | SvFLAGS(rv) = 0; | |
8549 | SvREFCNT(rv) = refcnt; | |
8550 | } | |
8551 | ||
51cf62d8 | 8552 | if (SvTYPE(rv) < SVt_RV) |
0199fce9 JD |
8553 | sv_upgrade(rv, SVt_RV); |
8554 | else if (SvTYPE(rv) > SVt_RV) { | |
0c34ef67 | 8555 | SvOOK_off(rv); |
0199fce9 JD |
8556 | if (SvPVX(rv) && SvLEN(rv)) |
8557 | Safefree(SvPVX(rv)); | |
8558 | SvCUR_set(rv, 0); | |
8559 | SvLEN_set(rv, 0); | |
8560 | } | |
51cf62d8 | 8561 | |
0c34ef67 | 8562 | SvOK_off(rv); |
053fc874 | 8563 | SvRV(rv) = sv; |
ed6116ce | 8564 | SvROK_on(rv); |
463ee0b2 | 8565 | |
a0d0e21e LW |
8566 | if (classname) { |
8567 | HV* stash = gv_stashpv(classname, TRUE); | |
8568 | (void)sv_bless(rv, stash); | |
8569 | } | |
8570 | return sv; | |
8571 | } | |
8572 | ||
954c1994 GS |
8573 | /* |
8574 | =for apidoc sv_setref_pv | |
8575 | ||
8576 | Copies a pointer into a new SV, optionally blessing the SV. The C<rv> | |
8577 | argument will be upgraded to an RV. That RV will be modified to point to | |
8578 | the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed | |
8579 | into the SV. The C<classname> argument indicates the package for the | |
8580 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8581 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
8582 | |
8583 | Do not use with other Perl types such as HV, AV, SV, CV, because those | |
8584 | objects will become corrupted by the pointer copy process. | |
8585 | ||
8586 | Note that C<sv_setref_pvn> copies the string while this copies the pointer. | |
8587 | ||
8588 | =cut | |
8589 | */ | |
8590 | ||
a0d0e21e | 8591 | SV* |
864dbfa3 | 8592 | Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv) |
a0d0e21e | 8593 | { |
189b2af5 | 8594 | if (!pv) { |
3280af22 | 8595 | sv_setsv(rv, &PL_sv_undef); |
189b2af5 GS |
8596 | SvSETMAGIC(rv); |
8597 | } | |
a0d0e21e | 8598 | else |
56431972 | 8599 | sv_setiv(newSVrv(rv,classname), PTR2IV(pv)); |
a0d0e21e LW |
8600 | return rv; |
8601 | } | |
8602 | ||
954c1994 GS |
8603 | /* |
8604 | =for apidoc sv_setref_iv | |
8605 | ||
8606 | Copies an integer into a new SV, optionally blessing the SV. The C<rv> | |
8607 | argument will be upgraded to an RV. That RV will be modified to point to | |
8608 | the new SV. The C<classname> argument indicates the package for the | |
8609 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8610 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
8611 | |
8612 | =cut | |
8613 | */ | |
8614 | ||
a0d0e21e | 8615 | SV* |
864dbfa3 | 8616 | Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv) |
a0d0e21e LW |
8617 | { |
8618 | sv_setiv(newSVrv(rv,classname), iv); | |
8619 | return rv; | |
8620 | } | |
8621 | ||
954c1994 | 8622 | /* |
e1c57cef JH |
8623 | =for apidoc sv_setref_uv |
8624 | ||
8625 | Copies an unsigned integer into a new SV, optionally blessing the SV. The C<rv> | |
8626 | argument will be upgraded to an RV. That RV will be modified to point to | |
8627 | the new SV. The C<classname> argument indicates the package for the | |
8628 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8629 | will have a reference count of 1, and the RV will be returned. |
e1c57cef JH |
8630 | |
8631 | =cut | |
8632 | */ | |
8633 | ||
8634 | SV* | |
8635 | Perl_sv_setref_uv(pTHX_ SV *rv, const char *classname, UV uv) | |
8636 | { | |
8637 | sv_setuv(newSVrv(rv,classname), uv); | |
8638 | return rv; | |
8639 | } | |
8640 | ||
8641 | /* | |
954c1994 GS |
8642 | =for apidoc sv_setref_nv |
8643 | ||
8644 | Copies a double into a new SV, optionally blessing the SV. The C<rv> | |
8645 | argument will be upgraded to an RV. That RV will be modified to point to | |
8646 | the new SV. The C<classname> argument indicates the package for the | |
8647 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8648 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
8649 | |
8650 | =cut | |
8651 | */ | |
8652 | ||
a0d0e21e | 8653 | SV* |
65202027 | 8654 | Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv) |
a0d0e21e LW |
8655 | { |
8656 | sv_setnv(newSVrv(rv,classname), nv); | |
8657 | return rv; | |
8658 | } | |
463ee0b2 | 8659 | |
954c1994 GS |
8660 | /* |
8661 | =for apidoc sv_setref_pvn | |
8662 | ||
8663 | Copies a string into a new SV, optionally blessing the SV. The length of the | |
8664 | string must be specified with C<n>. The C<rv> argument will be upgraded to | |
8665 | an RV. That RV will be modified to point to the new SV. The C<classname> | |
8666 | argument indicates the package for the blessing. Set C<classname> to | |
7a5fa8a2 | 8667 | C<Nullch> to avoid the blessing. The new SV will have a reference count |
d34c2299 | 8668 | of 1, and the RV will be returned. |
954c1994 GS |
8669 | |
8670 | Note that C<sv_setref_pv> copies the pointer while this copies the string. | |
8671 | ||
8672 | =cut | |
8673 | */ | |
8674 | ||
a0d0e21e | 8675 | SV* |
864dbfa3 | 8676 | Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n) |
a0d0e21e LW |
8677 | { |
8678 | sv_setpvn(newSVrv(rv,classname), pv, n); | |
463ee0b2 LW |
8679 | return rv; |
8680 | } | |
8681 | ||
954c1994 GS |
8682 | /* |
8683 | =for apidoc sv_bless | |
8684 | ||
8685 | Blesses an SV into a specified package. The SV must be an RV. The package | |
8686 | must be designated by its stash (see C<gv_stashpv()>). The reference count | |
8687 | of the SV is unaffected. | |
8688 | ||
8689 | =cut | |
8690 | */ | |
8691 | ||
a0d0e21e | 8692 | SV* |
864dbfa3 | 8693 | Perl_sv_bless(pTHX_ SV *sv, HV *stash) |
a0d0e21e | 8694 | { |
76e3520e | 8695 | SV *tmpRef; |
a0d0e21e | 8696 | if (!SvROK(sv)) |
cea2e8a9 | 8697 | Perl_croak(aTHX_ "Can't bless non-reference value"); |
76e3520e GS |
8698 | tmpRef = SvRV(sv); |
8699 | if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) { | |
8700 | if (SvREADONLY(tmpRef)) | |
cea2e8a9 | 8701 | Perl_croak(aTHX_ PL_no_modify); |
76e3520e GS |
8702 | if (SvOBJECT(tmpRef)) { |
8703 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 8704 | --PL_sv_objcount; |
76e3520e | 8705 | SvREFCNT_dec(SvSTASH(tmpRef)); |
2e3febc6 | 8706 | } |
a0d0e21e | 8707 | } |
76e3520e GS |
8708 | SvOBJECT_on(tmpRef); |
8709 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 8710 | ++PL_sv_objcount; |
76e3520e GS |
8711 | (void)SvUPGRADE(tmpRef, SVt_PVMG); |
8712 | SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash); | |
a0d0e21e | 8713 | |
2e3febc6 CS |
8714 | if (Gv_AMG(stash)) |
8715 | SvAMAGIC_on(sv); | |
8716 | else | |
8717 | SvAMAGIC_off(sv); | |
a0d0e21e | 8718 | |
1edbfb88 AB |
8719 | if(SvSMAGICAL(tmpRef)) |
8720 | if(mg_find(tmpRef, PERL_MAGIC_ext) || mg_find(tmpRef, PERL_MAGIC_uvar)) | |
8721 | mg_set(tmpRef); | |
8722 | ||
8723 | ||
ecdeb87c | 8724 | |
a0d0e21e LW |
8725 | return sv; |
8726 | } | |
8727 | ||
645c22ef | 8728 | /* Downgrades a PVGV to a PVMG. |
645c22ef DM |
8729 | */ |
8730 | ||
76e3520e | 8731 | STATIC void |
cea2e8a9 | 8732 | S_sv_unglob(pTHX_ SV *sv) |
a0d0e21e | 8733 | { |
850fabdf GS |
8734 | void *xpvmg; |
8735 | ||
a0d0e21e LW |
8736 | assert(SvTYPE(sv) == SVt_PVGV); |
8737 | SvFAKE_off(sv); | |
8738 | if (GvGP(sv)) | |
1edc1566 | 8739 | gp_free((GV*)sv); |
e826b3c7 GS |
8740 | if (GvSTASH(sv)) { |
8741 | SvREFCNT_dec(GvSTASH(sv)); | |
8742 | GvSTASH(sv) = Nullhv; | |
8743 | } | |
14befaf4 | 8744 | sv_unmagic(sv, PERL_MAGIC_glob); |
a0d0e21e | 8745 | Safefree(GvNAME(sv)); |
a5f75d66 | 8746 | GvMULTI_off(sv); |
850fabdf GS |
8747 | |
8748 | /* need to keep SvANY(sv) in the right arena */ | |
8749 | xpvmg = new_XPVMG(); | |
8750 | StructCopy(SvANY(sv), xpvmg, XPVMG); | |
8751 | del_XPVGV(SvANY(sv)); | |
8752 | SvANY(sv) = xpvmg; | |
8753 | ||
a0d0e21e LW |
8754 | SvFLAGS(sv) &= ~SVTYPEMASK; |
8755 | SvFLAGS(sv) |= SVt_PVMG; | |
8756 | } | |
8757 | ||
954c1994 | 8758 | /* |
840a7b70 | 8759 | =for apidoc sv_unref_flags |
954c1994 GS |
8760 | |
8761 | Unsets the RV status of the SV, and decrements the reference count of | |
8762 | whatever was being referenced by the RV. This can almost be thought of | |
840a7b70 IZ |
8763 | as a reversal of C<newSVrv>. The C<cflags> argument can contain |
8764 | C<SV_IMMEDIATE_UNREF> to force the reference count to be decremented | |
8765 | (otherwise the decrementing is conditional on the reference count being | |
8766 | different from one or the reference being a readonly SV). | |
7889fe52 | 8767 | See C<SvROK_off>. |
954c1994 GS |
8768 | |
8769 | =cut | |
8770 | */ | |
8771 | ||
ed6116ce | 8772 | void |
840a7b70 | 8773 | Perl_sv_unref_flags(pTHX_ SV *sv, U32 flags) |
ed6116ce | 8774 | { |
a0d0e21e | 8775 | SV* rv = SvRV(sv); |
810b8aa5 GS |
8776 | |
8777 | if (SvWEAKREF(sv)) { | |
8778 | sv_del_backref(sv); | |
8779 | SvWEAKREF_off(sv); | |
8780 | SvRV(sv) = 0; | |
8781 | return; | |
8782 | } | |
ed6116ce LW |
8783 | SvRV(sv) = 0; |
8784 | SvROK_off(sv); | |
04ca4930 NC |
8785 | /* You can't have a || SvREADONLY(rv) here, as $a = $$a, where $a was |
8786 | assigned to as BEGIN {$a = \"Foo"} will fail. */ | |
8787 | if (SvREFCNT(rv) != 1 || (flags & SV_IMMEDIATE_UNREF)) | |
4633a7c4 | 8788 | SvREFCNT_dec(rv); |
840a7b70 | 8789 | else /* XXX Hack, but hard to make $a=$a->[1] work otherwise */ |
4633a7c4 | 8790 | sv_2mortal(rv); /* Schedule for freeing later */ |
ed6116ce | 8791 | } |
8990e307 | 8792 | |
840a7b70 IZ |
8793 | /* |
8794 | =for apidoc sv_unref | |
8795 | ||
8796 | Unsets the RV status of the SV, and decrements the reference count of | |
8797 | whatever was being referenced by the RV. This can almost be thought of | |
8798 | as a reversal of C<newSVrv>. This is C<sv_unref_flags> with the C<flag> | |
7889fe52 | 8799 | being zero. See C<SvROK_off>. |
840a7b70 IZ |
8800 | |
8801 | =cut | |
8802 | */ | |
8803 | ||
8804 | void | |
8805 | Perl_sv_unref(pTHX_ SV *sv) | |
8806 | { | |
8807 | sv_unref_flags(sv, 0); | |
8808 | } | |
8809 | ||
645c22ef DM |
8810 | /* |
8811 | =for apidoc sv_taint | |
8812 | ||
8813 | Taint an SV. Use C<SvTAINTED_on> instead. | |
8814 | =cut | |
8815 | */ | |
8816 | ||
bbce6d69 | 8817 | void |
864dbfa3 | 8818 | Perl_sv_taint(pTHX_ SV *sv) |
bbce6d69 | 8819 | { |
14befaf4 | 8820 | sv_magic((sv), Nullsv, PERL_MAGIC_taint, Nullch, 0); |
bbce6d69 | 8821 | } |
8822 | ||
645c22ef DM |
8823 | /* |
8824 | =for apidoc sv_untaint | |
8825 | ||
8826 | Untaint an SV. Use C<SvTAINTED_off> instead. | |
8827 | =cut | |
8828 | */ | |
8829 | ||
bbce6d69 | 8830 | void |
864dbfa3 | 8831 | Perl_sv_untaint(pTHX_ SV *sv) |
bbce6d69 | 8832 | { |
13f57bf8 | 8833 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
14befaf4 | 8834 | MAGIC *mg = mg_find(sv, PERL_MAGIC_taint); |
36477c24 | 8835 | if (mg) |
565764a8 | 8836 | mg->mg_len &= ~1; |
36477c24 | 8837 | } |
bbce6d69 | 8838 | } |
8839 | ||
645c22ef DM |
8840 | /* |
8841 | =for apidoc sv_tainted | |
8842 | ||
8843 | Test an SV for taintedness. Use C<SvTAINTED> instead. | |
8844 | =cut | |
8845 | */ | |
8846 | ||
bbce6d69 | 8847 | bool |
864dbfa3 | 8848 | Perl_sv_tainted(pTHX_ SV *sv) |
bbce6d69 | 8849 | { |
13f57bf8 | 8850 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
14befaf4 | 8851 | MAGIC *mg = mg_find(sv, PERL_MAGIC_taint); |
155aba94 | 8852 | if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv))) |
36477c24 | 8853 | return TRUE; |
8854 | } | |
8855 | return FALSE; | |
bbce6d69 | 8856 | } |
8857 | ||
09540bc3 JH |
8858 | /* |
8859 | =for apidoc sv_setpviv | |
8860 | ||
8861 | Copies an integer into the given SV, also updating its string value. | |
8862 | Does not handle 'set' magic. See C<sv_setpviv_mg>. | |
8863 | ||
8864 | =cut | |
8865 | */ | |
8866 | ||
8867 | void | |
8868 | Perl_sv_setpviv(pTHX_ SV *sv, IV iv) | |
8869 | { | |
8870 | char buf[TYPE_CHARS(UV)]; | |
8871 | char *ebuf; | |
8872 | char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf); | |
8873 | ||
8874 | sv_setpvn(sv, ptr, ebuf - ptr); | |
8875 | } | |
8876 | ||
8877 | /* | |
8878 | =for apidoc sv_setpviv_mg | |
8879 | ||
8880 | Like C<sv_setpviv>, but also handles 'set' magic. | |
8881 | ||
8882 | =cut | |
8883 | */ | |
8884 | ||
8885 | void | |
8886 | Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv) | |
8887 | { | |
8888 | char buf[TYPE_CHARS(UV)]; | |
8889 | char *ebuf; | |
8890 | char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf); | |
8891 | ||
8892 | sv_setpvn(sv, ptr, ebuf - ptr); | |
8893 | SvSETMAGIC(sv); | |
8894 | } | |
8895 | ||
cea2e8a9 | 8896 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
8897 | |
8898 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
8899 | * version of the main function, (which may itself be aliased to us). | |
8900 | * Don't access this version directly. | |
8901 | */ | |
8902 | ||
cea2e8a9 GS |
8903 | void |
8904 | Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...) | |
8905 | { | |
8906 | dTHX; | |
8907 | va_list args; | |
8908 | va_start(args, pat); | |
c5be433b | 8909 | sv_vsetpvf(sv, pat, &args); |
cea2e8a9 GS |
8910 | va_end(args); |
8911 | } | |
8912 | ||
645c22ef DM |
8913 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
8914 | * version of the main function, (which may itself be aliased to us). | |
8915 | * Don't access this version directly. | |
8916 | */ | |
cea2e8a9 GS |
8917 | |
8918 | void | |
8919 | Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
8920 | { | |
8921 | dTHX; | |
8922 | va_list args; | |
8923 | va_start(args, pat); | |
c5be433b | 8924 | sv_vsetpvf_mg(sv, pat, &args); |
cea2e8a9 | 8925 | va_end(args); |
cea2e8a9 GS |
8926 | } |
8927 | #endif | |
8928 | ||
954c1994 GS |
8929 | /* |
8930 | =for apidoc sv_setpvf | |
8931 | ||
bffc3d17 SH |
8932 | Works like C<sv_catpvf> but copies the text into the SV instead of |
8933 | appending it. Does not handle 'set' magic. See C<sv_setpvf_mg>. | |
954c1994 GS |
8934 | |
8935 | =cut | |
8936 | */ | |
8937 | ||
46fc3d4c | 8938 | void |
864dbfa3 | 8939 | Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 8940 | { |
8941 | va_list args; | |
46fc3d4c | 8942 | va_start(args, pat); |
c5be433b | 8943 | sv_vsetpvf(sv, pat, &args); |
46fc3d4c | 8944 | va_end(args); |
8945 | } | |
8946 | ||
bffc3d17 SH |
8947 | /* |
8948 | =for apidoc sv_vsetpvf | |
8949 | ||
8950 | Works like C<sv_vcatpvf> but copies the text into the SV instead of | |
8951 | appending it. Does not handle 'set' magic. See C<sv_vsetpvf_mg>. | |
8952 | ||
8953 | Usually used via its frontend C<sv_setpvf>. | |
8954 | ||
8955 | =cut | |
8956 | */ | |
645c22ef | 8957 | |
c5be433b GS |
8958 | void |
8959 | Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args) | |
8960 | { | |
8961 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
8962 | } | |
ef50df4b | 8963 | |
954c1994 GS |
8964 | /* |
8965 | =for apidoc sv_setpvf_mg | |
8966 | ||
8967 | Like C<sv_setpvf>, but also handles 'set' magic. | |
8968 | ||
8969 | =cut | |
8970 | */ | |
8971 | ||
ef50df4b | 8972 | void |
864dbfa3 | 8973 | Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
8974 | { |
8975 | va_list args; | |
ef50df4b | 8976 | va_start(args, pat); |
c5be433b | 8977 | sv_vsetpvf_mg(sv, pat, &args); |
ef50df4b | 8978 | va_end(args); |
c5be433b GS |
8979 | } |
8980 | ||
bffc3d17 SH |
8981 | /* |
8982 | =for apidoc sv_vsetpvf_mg | |
8983 | ||
8984 | Like C<sv_vsetpvf>, but also handles 'set' magic. | |
8985 | ||
8986 | Usually used via its frontend C<sv_setpvf_mg>. | |
8987 | ||
8988 | =cut | |
8989 | */ | |
645c22ef | 8990 | |
c5be433b GS |
8991 | void |
8992 | Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
8993 | { | |
8994 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
ef50df4b GS |
8995 | SvSETMAGIC(sv); |
8996 | } | |
8997 | ||
cea2e8a9 | 8998 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
8999 | |
9000 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
9001 | * version of the main function, (which may itself be aliased to us). | |
9002 | * Don't access this version directly. | |
9003 | */ | |
9004 | ||
cea2e8a9 GS |
9005 | void |
9006 | Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...) | |
9007 | { | |
9008 | dTHX; | |
9009 | va_list args; | |
9010 | va_start(args, pat); | |
c5be433b | 9011 | sv_vcatpvf(sv, pat, &args); |
cea2e8a9 GS |
9012 | va_end(args); |
9013 | } | |
9014 | ||
645c22ef DM |
9015 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
9016 | * version of the main function, (which may itself be aliased to us). | |
9017 | * Don't access this version directly. | |
9018 | */ | |
9019 | ||
cea2e8a9 GS |
9020 | void |
9021 | Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
9022 | { | |
9023 | dTHX; | |
9024 | va_list args; | |
9025 | va_start(args, pat); | |
c5be433b | 9026 | sv_vcatpvf_mg(sv, pat, &args); |
cea2e8a9 | 9027 | va_end(args); |
cea2e8a9 GS |
9028 | } |
9029 | #endif | |
9030 | ||
954c1994 GS |
9031 | /* |
9032 | =for apidoc sv_catpvf | |
9033 | ||
d5ce4a7c GA |
9034 | Processes its arguments like C<sprintf> and appends the formatted |
9035 | output to an SV. If the appended data contains "wide" characters | |
9036 | (including, but not limited to, SVs with a UTF-8 PV formatted with %s, | |
9037 | and characters >255 formatted with %c), the original SV might get | |
bffc3d17 | 9038 | upgraded to UTF-8. Handles 'get' magic, but not 'set' magic. See |
cdd94ca7 NC |
9039 | C<sv_catpvf_mg>. If the original SV was UTF-8, the pattern should be |
9040 | valid UTF-8; if the original SV was bytes, the pattern should be too. | |
954c1994 | 9041 | |
d5ce4a7c | 9042 | =cut */ |
954c1994 | 9043 | |
46fc3d4c | 9044 | void |
864dbfa3 | 9045 | Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 9046 | { |
9047 | va_list args; | |
46fc3d4c | 9048 | va_start(args, pat); |
c5be433b | 9049 | sv_vcatpvf(sv, pat, &args); |
46fc3d4c | 9050 | va_end(args); |
9051 | } | |
9052 | ||
bffc3d17 SH |
9053 | /* |
9054 | =for apidoc sv_vcatpvf | |
9055 | ||
9056 | Processes its arguments like C<vsprintf> and appends the formatted output | |
9057 | to an SV. Does not handle 'set' magic. See C<sv_vcatpvf_mg>. | |
9058 | ||
9059 | Usually used via its frontend C<sv_catpvf>. | |
9060 | ||
9061 | =cut | |
9062 | */ | |
645c22ef | 9063 | |
ef50df4b | 9064 | void |
c5be433b GS |
9065 | Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args) |
9066 | { | |
9067 | sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
9068 | } | |
9069 | ||
954c1994 GS |
9070 | /* |
9071 | =for apidoc sv_catpvf_mg | |
9072 | ||
9073 | Like C<sv_catpvf>, but also handles 'set' magic. | |
9074 | ||
9075 | =cut | |
9076 | */ | |
9077 | ||
c5be433b | 9078 | void |
864dbfa3 | 9079 | Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
9080 | { |
9081 | va_list args; | |
ef50df4b | 9082 | va_start(args, pat); |
c5be433b | 9083 | sv_vcatpvf_mg(sv, pat, &args); |
ef50df4b | 9084 | va_end(args); |
c5be433b GS |
9085 | } |
9086 | ||
bffc3d17 SH |
9087 | /* |
9088 | =for apidoc sv_vcatpvf_mg | |
9089 | ||
9090 | Like C<sv_vcatpvf>, but also handles 'set' magic. | |
9091 | ||
9092 | Usually used via its frontend C<sv_catpvf_mg>. | |
9093 | ||
9094 | =cut | |
9095 | */ | |
645c22ef | 9096 | |
c5be433b GS |
9097 | void |
9098 | Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
9099 | { | |
9100 | sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
ef50df4b GS |
9101 | SvSETMAGIC(sv); |
9102 | } | |
9103 | ||
954c1994 GS |
9104 | /* |
9105 | =for apidoc sv_vsetpvfn | |
9106 | ||
bffc3d17 | 9107 | Works like C<sv_vcatpvfn> but copies the text into the SV instead of |
954c1994 GS |
9108 | appending it. |
9109 | ||
bffc3d17 | 9110 | Usually used via one of its frontends C<sv_vsetpvf> and C<sv_vsetpvf_mg>. |
645c22ef | 9111 | |
954c1994 GS |
9112 | =cut |
9113 | */ | |
9114 | ||
46fc3d4c | 9115 | void |
7d5ea4e7 | 9116 | Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 9117 | { |
9118 | sv_setpvn(sv, "", 0); | |
7d5ea4e7 | 9119 | sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted); |
46fc3d4c | 9120 | } |
9121 | ||
645c22ef DM |
9122 | /* private function for use in sv_vcatpvfn via the EXPECT_NUMBER macro */ |
9123 | ||
2d00ba3b | 9124 | STATIC I32 |
9dd79c3f | 9125 | S_expect_number(pTHX_ char** pattern) |
211dfcf1 HS |
9126 | { |
9127 | I32 var = 0; | |
9128 | switch (**pattern) { | |
9129 | case '1': case '2': case '3': | |
9130 | case '4': case '5': case '6': | |
9131 | case '7': case '8': case '9': | |
9132 | while (isDIGIT(**pattern)) | |
9133 | var = var * 10 + (*(*pattern)++ - '0'); | |
9134 | } | |
9135 | return var; | |
9136 | } | |
9dd79c3f | 9137 | #define EXPECT_NUMBER(pattern, var) (var = S_expect_number(aTHX_ &pattern)) |
211dfcf1 | 9138 | |
4151a5fe IZ |
9139 | static char * |
9140 | F0convert(NV nv, char *endbuf, STRLEN *len) | |
9141 | { | |
9142 | int neg = nv < 0; | |
9143 | UV uv; | |
9144 | char *p = endbuf; | |
9145 | ||
9146 | if (neg) | |
9147 | nv = -nv; | |
9148 | if (nv < UV_MAX) { | |
9149 | nv += 0.5; | |
028f8eaa | 9150 | uv = (UV)nv; |
4151a5fe IZ |
9151 | if (uv & 1 && uv == nv) |
9152 | uv--; /* Round to even */ | |
9153 | do { | |
9154 | unsigned dig = uv % 10; | |
9155 | *--p = '0' + dig; | |
9156 | } while (uv /= 10); | |
9157 | if (neg) | |
9158 | *--p = '-'; | |
9159 | *len = endbuf - p; | |
9160 | return p; | |
9161 | } | |
9162 | return Nullch; | |
9163 | } | |
9164 | ||
9165 | ||
954c1994 GS |
9166 | /* |
9167 | =for apidoc sv_vcatpvfn | |
9168 | ||
9169 | Processes its arguments like C<vsprintf> and appends the formatted output | |
9170 | to an SV. Uses an array of SVs if the C style variable argument list is | |
9171 | missing (NULL). When running with taint checks enabled, indicates via | |
9172 | C<maybe_tainted> if results are untrustworthy (often due to the use of | |
9173 | locales). | |
9174 | ||
bffc3d17 | 9175 | Usually used via one of its frontends C<sv_vcatpvf> and C<sv_vcatpvf_mg>. |
645c22ef | 9176 | |
954c1994 GS |
9177 | =cut |
9178 | */ | |
9179 | ||
1ef29b0e RGS |
9180 | /* XXX maybe_tainted is never assigned to, so the doc above is lying. */ |
9181 | ||
46fc3d4c | 9182 | void |
7d5ea4e7 | 9183 | Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 9184 | { |
9185 | char *p; | |
9186 | char *q; | |
9187 | char *patend; | |
fc36a67e | 9188 | STRLEN origlen; |
46fc3d4c | 9189 | I32 svix = 0; |
c635e13b | 9190 | static char nullstr[] = "(null)"; |
9c5ffd7c | 9191 | SV *argsv = Nullsv; |
db79b45b JH |
9192 | bool has_utf8; /* has the result utf8? */ |
9193 | bool pat_utf8; /* the pattern is in utf8? */ | |
9194 | SV *nsv = Nullsv; | |
4151a5fe IZ |
9195 | /* Times 4: a decimal digit takes more than 3 binary digits. |
9196 | * NV_DIG: mantissa takes than many decimal digits. | |
9197 | * Plus 32: Playing safe. */ | |
9198 | char ebuf[IV_DIG * 4 + NV_DIG + 32]; | |
9199 | /* large enough for "%#.#f" --chip */ | |
9200 | /* what about long double NVs? --jhi */ | |
db79b45b JH |
9201 | |
9202 | has_utf8 = pat_utf8 = DO_UTF8(sv); | |
46fc3d4c | 9203 | |
9204 | /* no matter what, this is a string now */ | |
fc36a67e | 9205 | (void)SvPV_force(sv, origlen); |
46fc3d4c | 9206 | |
fc36a67e | 9207 | /* special-case "", "%s", and "%_" */ |
46fc3d4c | 9208 | if (patlen == 0) |
9209 | return; | |
fc36a67e | 9210 | if (patlen == 2 && pat[0] == '%') { |
9211 | switch (pat[1]) { | |
9212 | case 's': | |
c635e13b | 9213 | if (args) { |
73d840c0 | 9214 | const char *s = va_arg(*args, char*); |
c635e13b | 9215 | sv_catpv(sv, s ? s : nullstr); |
9216 | } | |
7e2040f0 | 9217 | else if (svix < svmax) { |
fc36a67e | 9218 | sv_catsv(sv, *svargs); |
7e2040f0 GS |
9219 | if (DO_UTF8(*svargs)) |
9220 | SvUTF8_on(sv); | |
9221 | } | |
fc36a67e | 9222 | return; |
9223 | case '_': | |
9224 | if (args) { | |
7e2040f0 GS |
9225 | argsv = va_arg(*args, SV*); |
9226 | sv_catsv(sv, argsv); | |
9227 | if (DO_UTF8(argsv)) | |
9228 | SvUTF8_on(sv); | |
fc36a67e | 9229 | return; |
9230 | } | |
9231 | /* See comment on '_' below */ | |
9232 | break; | |
9233 | } | |
46fc3d4c | 9234 | } |
9235 | ||
1d917b39 | 9236 | #ifndef USE_LONG_DOUBLE |
4151a5fe IZ |
9237 | /* special-case "%.<number>[gf]" */ |
9238 | if ( patlen <= 5 && pat[0] == '%' && pat[1] == '.' | |
9239 | && (pat[patlen-1] == 'g' || pat[patlen-1] == 'f') ) { | |
9240 | unsigned digits = 0; | |
9241 | const char *pp; | |
9242 | ||
9243 | pp = pat + 2; | |
9244 | while (*pp >= '0' && *pp <= '9') | |
9245 | digits = 10 * digits + (*pp++ - '0'); | |
028f8eaa | 9246 | if (pp - pat == (int)patlen - 1) { |
4151a5fe IZ |
9247 | NV nv; |
9248 | ||
9249 | if (args) | |
9250 | nv = (NV)va_arg(*args, double); | |
9251 | else if (svix < svmax) | |
9252 | nv = SvNV(*svargs); | |
9253 | else | |
9254 | return; | |
9255 | if (*pp == 'g') { | |
2873255c NC |
9256 | /* Add check for digits != 0 because it seems that some |
9257 | gconverts are buggy in this case, and we don't yet have | |
9258 | a Configure test for this. */ | |
9259 | if (digits && digits < sizeof(ebuf) - NV_DIG - 10) { | |
9260 | /* 0, point, slack */ | |
2e59c212 | 9261 | Gconvert(nv, (int)digits, 0, ebuf); |
4151a5fe IZ |
9262 | sv_catpv(sv, ebuf); |
9263 | if (*ebuf) /* May return an empty string for digits==0 */ | |
9264 | return; | |
9265 | } | |
9266 | } else if (!digits) { | |
9267 | STRLEN l; | |
9268 | ||
9269 | if ((p = F0convert(nv, ebuf + sizeof ebuf, &l))) { | |
9270 | sv_catpvn(sv, p, l); | |
9271 | return; | |
9272 | } | |
9273 | } | |
9274 | } | |
9275 | } | |
1d917b39 | 9276 | #endif /* !USE_LONG_DOUBLE */ |
4151a5fe | 9277 | |
2cf2cfc6 | 9278 | if (!args && svix < svmax && DO_UTF8(*svargs)) |
205f51d8 | 9279 | has_utf8 = TRUE; |
2cf2cfc6 | 9280 | |
46fc3d4c | 9281 | patend = (char*)pat + patlen; |
9282 | for (p = (char*)pat; p < patend; p = q) { | |
9283 | bool alt = FALSE; | |
9284 | bool left = FALSE; | |
b22c7a20 | 9285 | bool vectorize = FALSE; |
211dfcf1 | 9286 | bool vectorarg = FALSE; |
2cf2cfc6 | 9287 | bool vec_utf8 = FALSE; |
46fc3d4c | 9288 | char fill = ' '; |
9289 | char plus = 0; | |
9290 | char intsize = 0; | |
9291 | STRLEN width = 0; | |
fc36a67e | 9292 | STRLEN zeros = 0; |
46fc3d4c | 9293 | bool has_precis = FALSE; |
9294 | STRLEN precis = 0; | |
58e33a90 | 9295 | I32 osvix = svix; |
2cf2cfc6 | 9296 | bool is_utf8 = FALSE; /* is this item utf8? */ |
20f6aaab AS |
9297 | #ifdef HAS_LDBL_SPRINTF_BUG |
9298 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 | 9299 | with sfio - Allen <allens@cpan.org> */ |
20f6aaab AS |
9300 | bool fix_ldbl_sprintf_bug = FALSE; |
9301 | #endif | |
205f51d8 | 9302 | |
46fc3d4c | 9303 | char esignbuf[4]; |
89ebb4a3 | 9304 | U8 utf8buf[UTF8_MAXBYTES+1]; |
46fc3d4c | 9305 | STRLEN esignlen = 0; |
9306 | ||
9307 | char *eptr = Nullch; | |
fc36a67e | 9308 | STRLEN elen = 0; |
81f715da | 9309 | SV *vecsv = Nullsv; |
a05b299f | 9310 | U8 *vecstr = Null(U8*); |
b22c7a20 | 9311 | STRLEN veclen = 0; |
934abaf1 | 9312 | char c = 0; |
46fc3d4c | 9313 | int i; |
9c5ffd7c | 9314 | unsigned base = 0; |
8c8eb53c RB |
9315 | IV iv = 0; |
9316 | UV uv = 0; | |
9e5b023a JH |
9317 | /* we need a long double target in case HAS_LONG_DOUBLE but |
9318 | not USE_LONG_DOUBLE | |
9319 | */ | |
35fff930 | 9320 | #if defined(HAS_LONG_DOUBLE) && LONG_DOUBLESIZE > DOUBLESIZE |
9e5b023a JH |
9321 | long double nv; |
9322 | #else | |
65202027 | 9323 | NV nv; |
9e5b023a | 9324 | #endif |
46fc3d4c | 9325 | STRLEN have; |
9326 | STRLEN need; | |
9327 | STRLEN gap; | |
e1ec3a88 | 9328 | const char *dotstr = "."; |
b22c7a20 | 9329 | STRLEN dotstrlen = 1; |
211dfcf1 | 9330 | I32 efix = 0; /* explicit format parameter index */ |
eb3fce90 | 9331 | I32 ewix = 0; /* explicit width index */ |
211dfcf1 HS |
9332 | I32 epix = 0; /* explicit precision index */ |
9333 | I32 evix = 0; /* explicit vector index */ | |
eb3fce90 | 9334 | bool asterisk = FALSE; |
46fc3d4c | 9335 | |
211dfcf1 | 9336 | /* echo everything up to the next format specification */ |
46fc3d4c | 9337 | for (q = p; q < patend && *q != '%'; ++q) ; |
9338 | if (q > p) { | |
db79b45b JH |
9339 | if (has_utf8 && !pat_utf8) |
9340 | sv_catpvn_utf8_upgrade(sv, p, q - p, nsv); | |
9341 | else | |
9342 | sv_catpvn(sv, p, q - p); | |
46fc3d4c | 9343 | p = q; |
9344 | } | |
9345 | if (q++ >= patend) | |
9346 | break; | |
9347 | ||
211dfcf1 HS |
9348 | /* |
9349 | We allow format specification elements in this order: | |
9350 | \d+\$ explicit format parameter index | |
9351 | [-+ 0#]+ flags | |
a472f209 | 9352 | v|\*(\d+\$)?v vector with optional (optionally specified) arg |
f3583277 | 9353 | 0 flag (as above): repeated to allow "v02" |
211dfcf1 HS |
9354 | \d+|\*(\d+\$)? width using optional (optionally specified) arg |
9355 | \.(\d*|\*(\d+\$)?) precision using optional (optionally specified) arg | |
9356 | [hlqLV] size | |
9357 | [%bcdefginopsux_DFOUX] format (mandatory) | |
9358 | */ | |
9359 | if (EXPECT_NUMBER(q, width)) { | |
9360 | if (*q == '$') { | |
9361 | ++q; | |
9362 | efix = width; | |
9363 | } else { | |
9364 | goto gotwidth; | |
9365 | } | |
9366 | } | |
9367 | ||
fc36a67e | 9368 | /* FLAGS */ |
9369 | ||
46fc3d4c | 9370 | while (*q) { |
9371 | switch (*q) { | |
9372 | case ' ': | |
9373 | case '+': | |
9374 | plus = *q++; | |
9375 | continue; | |
9376 | ||
9377 | case '-': | |
9378 | left = TRUE; | |
9379 | q++; | |
9380 | continue; | |
9381 | ||
9382 | case '0': | |
9383 | fill = *q++; | |
9384 | continue; | |
9385 | ||
9386 | case '#': | |
9387 | alt = TRUE; | |
9388 | q++; | |
9389 | continue; | |
9390 | ||
fc36a67e | 9391 | default: |
9392 | break; | |
9393 | } | |
9394 | break; | |
9395 | } | |
46fc3d4c | 9396 | |
211dfcf1 | 9397 | tryasterisk: |
eb3fce90 | 9398 | if (*q == '*') { |
211dfcf1 HS |
9399 | q++; |
9400 | if (EXPECT_NUMBER(q, ewix)) | |
9401 | if (*q++ != '$') | |
9402 | goto unknown; | |
eb3fce90 | 9403 | asterisk = TRUE; |
211dfcf1 HS |
9404 | } |
9405 | if (*q == 'v') { | |
eb3fce90 | 9406 | q++; |
211dfcf1 HS |
9407 | if (vectorize) |
9408 | goto unknown; | |
9cbac4c7 | 9409 | if ((vectorarg = asterisk)) { |
211dfcf1 HS |
9410 | evix = ewix; |
9411 | ewix = 0; | |
9412 | asterisk = FALSE; | |
9413 | } | |
9414 | vectorize = TRUE; | |
9415 | goto tryasterisk; | |
eb3fce90 JH |
9416 | } |
9417 | ||
211dfcf1 | 9418 | if (!asterisk) |
7a5fa8a2 | 9419 | if( *q == '0' ) |
f3583277 | 9420 | fill = *q++; |
211dfcf1 HS |
9421 | EXPECT_NUMBER(q, width); |
9422 | ||
9423 | if (vectorize) { | |
9424 | if (vectorarg) { | |
9425 | if (args) | |
9426 | vecsv = va_arg(*args, SV*); | |
9427 | else | |
9428 | vecsv = (evix ? evix <= svmax : svix < svmax) ? | |
3a7a539e | 9429 | svargs[evix ? evix-1 : svix++] : &PL_sv_undef; |
4459522c | 9430 | dotstr = SvPVx(vecsv, dotstrlen); |
211dfcf1 | 9431 | if (DO_UTF8(vecsv)) |
2cf2cfc6 | 9432 | is_utf8 = TRUE; |
211dfcf1 HS |
9433 | } |
9434 | if (args) { | |
9435 | vecsv = va_arg(*args, SV*); | |
9436 | vecstr = (U8*)SvPVx(vecsv,veclen); | |
2cf2cfc6 | 9437 | vec_utf8 = DO_UTF8(vecsv); |
eb3fce90 | 9438 | } |
211dfcf1 HS |
9439 | else if (efix ? efix <= svmax : svix < svmax) { |
9440 | vecsv = svargs[efix ? efix-1 : svix++]; | |
9441 | vecstr = (U8*)SvPVx(vecsv,veclen); | |
2cf2cfc6 | 9442 | vec_utf8 = DO_UTF8(vecsv); |
d7aa5382 JP |
9443 | /* if this is a version object, we need to return the |
9444 | * stringified representation (which the SvPVX has | |
9445 | * already done for us), but not vectorize the args | |
9446 | */ | |
9447 | if ( *q == 'd' && sv_derived_from(vecsv,"version") ) | |
9448 | { | |
9449 | q++; /* skip past the rest of the %vd format */ | |
da6068d9 | 9450 | eptr = (char *) vecstr; |
d7aa5382 JP |
9451 | elen = strlen(eptr); |
9452 | vectorize=FALSE; | |
9453 | goto string; | |
9454 | } | |
211dfcf1 HS |
9455 | } |
9456 | else { | |
9457 | vecstr = (U8*)""; | |
9458 | veclen = 0; | |
9459 | } | |
eb3fce90 | 9460 | } |
fc36a67e | 9461 | |
eb3fce90 | 9462 | if (asterisk) { |
fc36a67e | 9463 | if (args) |
9464 | i = va_arg(*args, int); | |
9465 | else | |
eb3fce90 JH |
9466 | i = (ewix ? ewix <= svmax : svix < svmax) ? |
9467 | SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 9468 | left |= (i < 0); |
9469 | width = (i < 0) ? -i : i; | |
fc36a67e | 9470 | } |
211dfcf1 | 9471 | gotwidth: |
fc36a67e | 9472 | |
9473 | /* PRECISION */ | |
46fc3d4c | 9474 | |
fc36a67e | 9475 | if (*q == '.') { |
9476 | q++; | |
9477 | if (*q == '*') { | |
211dfcf1 | 9478 | q++; |
7b8dd722 HS |
9479 | if (EXPECT_NUMBER(q, epix) && *q++ != '$') |
9480 | goto unknown; | |
9481 | /* XXX: todo, support specified precision parameter */ | |
9482 | if (epix) | |
211dfcf1 | 9483 | goto unknown; |
46fc3d4c | 9484 | if (args) |
9485 | i = va_arg(*args, int); | |
9486 | else | |
eb3fce90 JH |
9487 | i = (ewix ? ewix <= svmax : svix < svmax) |
9488 | ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 9489 | precis = (i < 0) ? 0 : i; |
fc36a67e | 9490 | } |
9491 | else { | |
9492 | precis = 0; | |
9493 | while (isDIGIT(*q)) | |
9494 | precis = precis * 10 + (*q++ - '0'); | |
9495 | } | |
9496 | has_precis = TRUE; | |
9497 | } | |
46fc3d4c | 9498 | |
fc36a67e | 9499 | /* SIZE */ |
46fc3d4c | 9500 | |
fc36a67e | 9501 | switch (*q) { |
c623ac67 GS |
9502 | #ifdef WIN32 |
9503 | case 'I': /* Ix, I32x, and I64x */ | |
9504 | # ifdef WIN64 | |
9505 | if (q[1] == '6' && q[2] == '4') { | |
9506 | q += 3; | |
9507 | intsize = 'q'; | |
9508 | break; | |
9509 | } | |
9510 | # endif | |
9511 | if (q[1] == '3' && q[2] == '2') { | |
9512 | q += 3; | |
9513 | break; | |
9514 | } | |
9515 | # ifdef WIN64 | |
9516 | intsize = 'q'; | |
9517 | # endif | |
9518 | q++; | |
9519 | break; | |
9520 | #endif | |
9e5b023a | 9521 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
6f9bb7fd | 9522 | case 'L': /* Ld */ |
e5c81feb | 9523 | /* FALL THROUGH */ |
e5c81feb | 9524 | #ifdef HAS_QUAD |
6f9bb7fd | 9525 | case 'q': /* qd */ |
9e5b023a | 9526 | #endif |
6f9bb7fd GS |
9527 | intsize = 'q'; |
9528 | q++; | |
9529 | break; | |
9530 | #endif | |
fc36a67e | 9531 | case 'l': |
9e5b023a | 9532 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
205f51d8 | 9533 | if (*(q + 1) == 'l') { /* lld, llf */ |
fc36a67e | 9534 | intsize = 'q'; |
9535 | q += 2; | |
46fc3d4c | 9536 | break; |
cf2093f6 | 9537 | } |
fc36a67e | 9538 | #endif |
6f9bb7fd | 9539 | /* FALL THROUGH */ |
fc36a67e | 9540 | case 'h': |
cf2093f6 | 9541 | /* FALL THROUGH */ |
fc36a67e | 9542 | case 'V': |
9543 | intsize = *q++; | |
46fc3d4c | 9544 | break; |
9545 | } | |
9546 | ||
fc36a67e | 9547 | /* CONVERSION */ |
9548 | ||
211dfcf1 HS |
9549 | if (*q == '%') { |
9550 | eptr = q++; | |
9551 | elen = 1; | |
9552 | goto string; | |
9553 | } | |
9554 | ||
be75b157 HS |
9555 | if (vectorize) |
9556 | argsv = vecsv; | |
9557 | else if (!args) | |
211dfcf1 HS |
9558 | argsv = (efix ? efix <= svmax : svix < svmax) ? |
9559 | svargs[efix ? efix-1 : svix++] : &PL_sv_undef; | |
9560 | ||
46fc3d4c | 9561 | switch (c = *q++) { |
9562 | ||
9563 | /* STRINGS */ | |
9564 | ||
46fc3d4c | 9565 | case 'c': |
be75b157 | 9566 | uv = (args && !vectorize) ? va_arg(*args, int) : SvIVx(argsv); |
1bd104fb JH |
9567 | if ((uv > 255 || |
9568 | (!UNI_IS_INVARIANT(uv) && SvUTF8(sv))) | |
0064a8a9 | 9569 | && !IN_BYTES) { |
dfe13c55 | 9570 | eptr = (char*)utf8buf; |
9041c2e3 | 9571 | elen = uvchr_to_utf8((U8*)eptr, uv) - utf8buf; |
2cf2cfc6 | 9572 | is_utf8 = TRUE; |
7e2040f0 GS |
9573 | } |
9574 | else { | |
9575 | c = (char)uv; | |
9576 | eptr = &c; | |
9577 | elen = 1; | |
a0ed51b3 | 9578 | } |
46fc3d4c | 9579 | goto string; |
9580 | ||
46fc3d4c | 9581 | case 's': |
be75b157 | 9582 | if (args && !vectorize) { |
fc36a67e | 9583 | eptr = va_arg(*args, char*); |
c635e13b | 9584 | if (eptr) |
1d7c1841 GS |
9585 | #ifdef MACOS_TRADITIONAL |
9586 | /* On MacOS, %#s format is used for Pascal strings */ | |
9587 | if (alt) | |
9588 | elen = *eptr++; | |
9589 | else | |
9590 | #endif | |
c635e13b | 9591 | elen = strlen(eptr); |
9592 | else { | |
9593 | eptr = nullstr; | |
9594 | elen = sizeof nullstr - 1; | |
9595 | } | |
46fc3d4c | 9596 | } |
211dfcf1 | 9597 | else { |
7e2040f0 GS |
9598 | eptr = SvPVx(argsv, elen); |
9599 | if (DO_UTF8(argsv)) { | |
a0ed51b3 LW |
9600 | if (has_precis && precis < elen) { |
9601 | I32 p = precis; | |
7e2040f0 | 9602 | sv_pos_u2b(argsv, &p, 0); /* sticks at end */ |
a0ed51b3 LW |
9603 | precis = p; |
9604 | } | |
9605 | if (width) { /* fudge width (can't fudge elen) */ | |
7e2040f0 | 9606 | width += elen - sv_len_utf8(argsv); |
a0ed51b3 | 9607 | } |
2cf2cfc6 | 9608 | is_utf8 = TRUE; |
a0ed51b3 LW |
9609 | } |
9610 | } | |
46fc3d4c | 9611 | goto string; |
9612 | ||
fc36a67e | 9613 | case '_': |
5df617be RB |
9614 | #ifdef CHECK_FORMAT |
9615 | format_sv: | |
9616 | #endif | |
fc36a67e | 9617 | /* |
9618 | * The "%_" hack might have to be changed someday, | |
9619 | * if ISO or ANSI decide to use '_' for something. | |
9620 | * So we keep it hidden from users' code. | |
9621 | */ | |
be75b157 | 9622 | if (!args || vectorize) |
fc36a67e | 9623 | goto unknown; |
211dfcf1 | 9624 | argsv = va_arg(*args, SV*); |
7e2040f0 GS |
9625 | eptr = SvPVx(argsv, elen); |
9626 | if (DO_UTF8(argsv)) | |
2cf2cfc6 | 9627 | is_utf8 = TRUE; |
fc36a67e | 9628 | |
46fc3d4c | 9629 | string: |
b22c7a20 | 9630 | vectorize = FALSE; |
46fc3d4c | 9631 | if (has_precis && elen > precis) |
9632 | elen = precis; | |
9633 | break; | |
9634 | ||
9635 | /* INTEGERS */ | |
9636 | ||
fc36a67e | 9637 | case 'p': |
5df617be RB |
9638 | #ifdef CHECK_FORMAT |
9639 | if (left) { | |
9640 | left = FALSE; | |
57f5baf2 RB |
9641 | if (!width) |
9642 | goto format_sv; /* %-p -> %_ */ | |
57f5baf2 RB |
9643 | precis = width; |
9644 | has_precis = TRUE; | |
9645 | width = 0; | |
9646 | goto format_sv; /* %-Np -> %.N_ */ | |
5df617be RB |
9647 | } |
9648 | #endif | |
be75b157 | 9649 | if (alt || vectorize) |
c2e66d9e | 9650 | goto unknown; |
211dfcf1 | 9651 | uv = PTR2UV(args ? va_arg(*args, void*) : argsv); |
fc36a67e | 9652 | base = 16; |
9653 | goto integer; | |
9654 | ||
46fc3d4c | 9655 | case 'D': |
29fe7a80 | 9656 | #ifdef IV_IS_QUAD |
22f3ae8c | 9657 | intsize = 'q'; |
29fe7a80 | 9658 | #else |
46fc3d4c | 9659 | intsize = 'l'; |
29fe7a80 | 9660 | #endif |
46fc3d4c | 9661 | /* FALL THROUGH */ |
9662 | case 'd': | |
9663 | case 'i': | |
b22c7a20 | 9664 | if (vectorize) { |
ba210ebe | 9665 | STRLEN ulen; |
211dfcf1 HS |
9666 | if (!veclen) |
9667 | continue; | |
2cf2cfc6 A |
9668 | if (vec_utf8) |
9669 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
9670 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 9671 | else { |
e83d50c9 | 9672 | uv = *vecstr; |
b22c7a20 GS |
9673 | ulen = 1; |
9674 | } | |
9675 | vecstr += ulen; | |
9676 | veclen -= ulen; | |
e83d50c9 JP |
9677 | if (plus) |
9678 | esignbuf[esignlen++] = plus; | |
b22c7a20 GS |
9679 | } |
9680 | else if (args) { | |
46fc3d4c | 9681 | switch (intsize) { |
9682 | case 'h': iv = (short)va_arg(*args, int); break; | |
46fc3d4c | 9683 | case 'l': iv = va_arg(*args, long); break; |
fc36a67e | 9684 | case 'V': iv = va_arg(*args, IV); break; |
b10c0dba | 9685 | default: iv = va_arg(*args, int); break; |
cf2093f6 JH |
9686 | #ifdef HAS_QUAD |
9687 | case 'q': iv = va_arg(*args, Quad_t); break; | |
9688 | #endif | |
46fc3d4c | 9689 | } |
9690 | } | |
9691 | else { | |
b10c0dba | 9692 | IV tiv = SvIVx(argsv); /* work around GCC bug #13488 */ |
46fc3d4c | 9693 | switch (intsize) { |
b10c0dba MHM |
9694 | case 'h': iv = (short)tiv; break; |
9695 | case 'l': iv = (long)tiv; break; | |
9696 | case 'V': | |
9697 | default: iv = tiv; break; | |
cf2093f6 | 9698 | #ifdef HAS_QUAD |
b10c0dba | 9699 | case 'q': iv = (Quad_t)tiv; break; |
cf2093f6 | 9700 | #endif |
46fc3d4c | 9701 | } |
9702 | } | |
e83d50c9 JP |
9703 | if ( !vectorize ) /* we already set uv above */ |
9704 | { | |
9705 | if (iv >= 0) { | |
9706 | uv = iv; | |
9707 | if (plus) | |
9708 | esignbuf[esignlen++] = plus; | |
9709 | } | |
9710 | else { | |
9711 | uv = -iv; | |
9712 | esignbuf[esignlen++] = '-'; | |
9713 | } | |
46fc3d4c | 9714 | } |
9715 | base = 10; | |
9716 | goto integer; | |
9717 | ||
fc36a67e | 9718 | case 'U': |
29fe7a80 | 9719 | #ifdef IV_IS_QUAD |
22f3ae8c | 9720 | intsize = 'q'; |
29fe7a80 | 9721 | #else |
fc36a67e | 9722 | intsize = 'l'; |
29fe7a80 | 9723 | #endif |
fc36a67e | 9724 | /* FALL THROUGH */ |
9725 | case 'u': | |
9726 | base = 10; | |
9727 | goto uns_integer; | |
9728 | ||
4f19785b WSI |
9729 | case 'b': |
9730 | base = 2; | |
9731 | goto uns_integer; | |
9732 | ||
46fc3d4c | 9733 | case 'O': |
29fe7a80 | 9734 | #ifdef IV_IS_QUAD |
22f3ae8c | 9735 | intsize = 'q'; |
29fe7a80 | 9736 | #else |
46fc3d4c | 9737 | intsize = 'l'; |
29fe7a80 | 9738 | #endif |
46fc3d4c | 9739 | /* FALL THROUGH */ |
9740 | case 'o': | |
9741 | base = 8; | |
9742 | goto uns_integer; | |
9743 | ||
9744 | case 'X': | |
46fc3d4c | 9745 | case 'x': |
9746 | base = 16; | |
46fc3d4c | 9747 | |
9748 | uns_integer: | |
b22c7a20 | 9749 | if (vectorize) { |
ba210ebe | 9750 | STRLEN ulen; |
b22c7a20 | 9751 | vector: |
211dfcf1 HS |
9752 | if (!veclen) |
9753 | continue; | |
2cf2cfc6 A |
9754 | if (vec_utf8) |
9755 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
9756 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 9757 | else { |
a05b299f | 9758 | uv = *vecstr; |
b22c7a20 GS |
9759 | ulen = 1; |
9760 | } | |
9761 | vecstr += ulen; | |
9762 | veclen -= ulen; | |
9763 | } | |
9764 | else if (args) { | |
46fc3d4c | 9765 | switch (intsize) { |
9766 | case 'h': uv = (unsigned short)va_arg(*args, unsigned); break; | |
46fc3d4c | 9767 | case 'l': uv = va_arg(*args, unsigned long); break; |
fc36a67e | 9768 | case 'V': uv = va_arg(*args, UV); break; |
b10c0dba | 9769 | default: uv = va_arg(*args, unsigned); break; |
cf2093f6 | 9770 | #ifdef HAS_QUAD |
9e3321a5 | 9771 | case 'q': uv = va_arg(*args, Uquad_t); break; |
cf2093f6 | 9772 | #endif |
46fc3d4c | 9773 | } |
9774 | } | |
9775 | else { | |
b10c0dba | 9776 | UV tuv = SvUVx(argsv); /* work around GCC bug #13488 */ |
46fc3d4c | 9777 | switch (intsize) { |
b10c0dba MHM |
9778 | case 'h': uv = (unsigned short)tuv; break; |
9779 | case 'l': uv = (unsigned long)tuv; break; | |
9780 | case 'V': | |
9781 | default: uv = tuv; break; | |
cf2093f6 | 9782 | #ifdef HAS_QUAD |
b10c0dba | 9783 | case 'q': uv = (Uquad_t)tuv; break; |
cf2093f6 | 9784 | #endif |
46fc3d4c | 9785 | } |
9786 | } | |
9787 | ||
9788 | integer: | |
46fc3d4c | 9789 | eptr = ebuf + sizeof ebuf; |
fc36a67e | 9790 | switch (base) { |
9791 | unsigned dig; | |
9792 | case 16: | |
c10ed8b9 HS |
9793 | if (!uv) |
9794 | alt = FALSE; | |
1d7c1841 GS |
9795 | p = (char*)((c == 'X') |
9796 | ? "0123456789ABCDEF" : "0123456789abcdef"); | |
fc36a67e | 9797 | do { |
9798 | dig = uv & 15; | |
9799 | *--eptr = p[dig]; | |
9800 | } while (uv >>= 4); | |
9801 | if (alt) { | |
46fc3d4c | 9802 | esignbuf[esignlen++] = '0'; |
fc36a67e | 9803 | esignbuf[esignlen++] = c; /* 'x' or 'X' */ |
46fc3d4c | 9804 | } |
fc36a67e | 9805 | break; |
9806 | case 8: | |
9807 | do { | |
9808 | dig = uv & 7; | |
9809 | *--eptr = '0' + dig; | |
9810 | } while (uv >>= 3); | |
9811 | if (alt && *eptr != '0') | |
9812 | *--eptr = '0'; | |
9813 | break; | |
4f19785b WSI |
9814 | case 2: |
9815 | do { | |
9816 | dig = uv & 1; | |
9817 | *--eptr = '0' + dig; | |
9818 | } while (uv >>= 1); | |
eda88b6d JH |
9819 | if (alt) { |
9820 | esignbuf[esignlen++] = '0'; | |
7481bb52 | 9821 | esignbuf[esignlen++] = 'b'; |
eda88b6d | 9822 | } |
4f19785b | 9823 | break; |
fc36a67e | 9824 | default: /* it had better be ten or less */ |
6bc102ca | 9825 | #if defined(PERL_Y2KWARN) |
e476b1b5 | 9826 | if (ckWARN(WARN_Y2K)) { |
6bc102ca GS |
9827 | STRLEN n; |
9828 | char *s = SvPV(sv,n); | |
9829 | if (n >= 2 && s[n-2] == '1' && s[n-1] == '9' | |
9830 | && (n == 2 || !isDIGIT(s[n-3]))) | |
9831 | { | |
9014280d | 9832 | Perl_warner(aTHX_ packWARN(WARN_Y2K), |
6bc102ca GS |
9833 | "Possible Y2K bug: %%%c %s", |
9834 | c, "format string following '19'"); | |
9835 | } | |
9836 | } | |
9837 | #endif | |
fc36a67e | 9838 | do { |
9839 | dig = uv % base; | |
9840 | *--eptr = '0' + dig; | |
9841 | } while (uv /= base); | |
9842 | break; | |
46fc3d4c | 9843 | } |
9844 | elen = (ebuf + sizeof ebuf) - eptr; | |
c10ed8b9 HS |
9845 | if (has_precis) { |
9846 | if (precis > elen) | |
9847 | zeros = precis - elen; | |
9848 | else if (precis == 0 && elen == 1 && *eptr == '0') | |
9849 | elen = 0; | |
9850 | } | |
46fc3d4c | 9851 | break; |
9852 | ||
9853 | /* FLOATING POINT */ | |
9854 | ||
fc36a67e | 9855 | case 'F': |
9856 | c = 'f'; /* maybe %F isn't supported here */ | |
9857 | /* FALL THROUGH */ | |
46fc3d4c | 9858 | case 'e': case 'E': |
fc36a67e | 9859 | case 'f': |
46fc3d4c | 9860 | case 'g': case 'G': |
9861 | ||
9862 | /* This is evil, but floating point is even more evil */ | |
9863 | ||
9e5b023a JH |
9864 | /* for SV-style calling, we can only get NV |
9865 | for C-style calling, we assume %f is double; | |
9866 | for simplicity we allow any of %Lf, %llf, %qf for long double | |
9867 | */ | |
9868 | switch (intsize) { | |
9869 | case 'V': | |
9870 | #if defined(USE_LONG_DOUBLE) | |
9871 | intsize = 'q'; | |
9872 | #endif | |
9873 | break; | |
8a2e3f14 | 9874 | /* [perl #20339] - we should accept and ignore %lf rather than die */ |
00e17364 HS |
9875 | case 'l': |
9876 | /* FALL THROUGH */ | |
9e5b023a JH |
9877 | default: |
9878 | #if defined(USE_LONG_DOUBLE) | |
9879 | intsize = args ? 0 : 'q'; | |
9880 | #endif | |
9881 | break; | |
9882 | case 'q': | |
9883 | #if defined(HAS_LONG_DOUBLE) | |
9884 | break; | |
9885 | #else | |
9886 | /* FALL THROUGH */ | |
9887 | #endif | |
9888 | case 'h': | |
9e5b023a JH |
9889 | goto unknown; |
9890 | } | |
9891 | ||
9892 | /* now we need (long double) if intsize == 'q', else (double) */ | |
be75b157 | 9893 | nv = (args && !vectorize) ? |
35fff930 JH |
9894 | #if LONG_DOUBLESIZE > DOUBLESIZE |
9895 | intsize == 'q' ? | |
205f51d8 AS |
9896 | va_arg(*args, long double) : |
9897 | va_arg(*args, double) | |
35fff930 | 9898 | #else |
205f51d8 | 9899 | va_arg(*args, double) |
35fff930 | 9900 | #endif |
9e5b023a | 9901 | : SvNVx(argsv); |
fc36a67e | 9902 | |
9903 | need = 0; | |
be75b157 | 9904 | vectorize = FALSE; |
fc36a67e | 9905 | if (c != 'e' && c != 'E') { |
9906 | i = PERL_INT_MIN; | |
9e5b023a JH |
9907 | /* FIXME: if HAS_LONG_DOUBLE but not USE_LONG_DOUBLE this |
9908 | will cast our (long double) to (double) */ | |
73b309ea | 9909 | (void)Perl_frexp(nv, &i); |
fc36a67e | 9910 | if (i == PERL_INT_MIN) |
cea2e8a9 | 9911 | Perl_die(aTHX_ "panic: frexp"); |
c635e13b | 9912 | if (i > 0) |
fc36a67e | 9913 | need = BIT_DIGITS(i); |
9914 | } | |
9915 | need += has_precis ? precis : 6; /* known default */ | |
20f6aaab | 9916 | |
fc36a67e | 9917 | if (need < width) |
9918 | need = width; | |
9919 | ||
20f6aaab AS |
9920 | #ifdef HAS_LDBL_SPRINTF_BUG |
9921 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 AS |
9922 | with sfio - Allen <allens@cpan.org> */ |
9923 | ||
9924 | # ifdef DBL_MAX | |
9925 | # define MY_DBL_MAX DBL_MAX | |
9926 | # else /* XXX guessing! HUGE_VAL may be defined as infinity, so not using */ | |
9927 | # if DOUBLESIZE >= 8 | |
9928 | # define MY_DBL_MAX 1.7976931348623157E+308L | |
9929 | # else | |
9930 | # define MY_DBL_MAX 3.40282347E+38L | |
9931 | # endif | |
9932 | # endif | |
9933 | ||
9934 | # ifdef HAS_LDBL_SPRINTF_BUG_LESS1 /* only between -1L & 1L - Allen */ | |
9935 | # define MY_DBL_MAX_BUG 1L | |
20f6aaab | 9936 | # else |
205f51d8 | 9937 | # define MY_DBL_MAX_BUG MY_DBL_MAX |
20f6aaab | 9938 | # endif |
20f6aaab | 9939 | |
205f51d8 AS |
9940 | # ifdef DBL_MIN |
9941 | # define MY_DBL_MIN DBL_MIN | |
9942 | # else /* XXX guessing! -Allen */ | |
9943 | # if DOUBLESIZE >= 8 | |
9944 | # define MY_DBL_MIN 2.2250738585072014E-308L | |
9945 | # else | |
9946 | # define MY_DBL_MIN 1.17549435E-38L | |
9947 | # endif | |
9948 | # endif | |
20f6aaab | 9949 | |
205f51d8 AS |
9950 | if ((intsize == 'q') && (c == 'f') && |
9951 | ((nv < MY_DBL_MAX_BUG) && (nv > -MY_DBL_MAX_BUG)) && | |
9952 | (need < DBL_DIG)) { | |
9953 | /* it's going to be short enough that | |
9954 | * long double precision is not needed */ | |
9955 | ||
9956 | if ((nv <= 0L) && (nv >= -0L)) | |
9957 | fix_ldbl_sprintf_bug = TRUE; /* 0 is 0 - easiest */ | |
9958 | else { | |
9959 | /* would use Perl_fp_class as a double-check but not | |
9960 | * functional on IRIX - see perl.h comments */ | |
9961 | ||
9962 | if ((nv >= MY_DBL_MIN) || (nv <= -MY_DBL_MIN)) { | |
9963 | /* It's within the range that a double can represent */ | |
9964 | #if defined(DBL_MAX) && !defined(DBL_MIN) | |
9965 | if ((nv >= ((long double)1/DBL_MAX)) || | |
9966 | (nv <= (-(long double)1/DBL_MAX))) | |
20f6aaab | 9967 | #endif |
205f51d8 | 9968 | fix_ldbl_sprintf_bug = TRUE; |
20f6aaab | 9969 | } |
205f51d8 AS |
9970 | } |
9971 | if (fix_ldbl_sprintf_bug == TRUE) { | |
9972 | double temp; | |
9973 | ||
9974 | intsize = 0; | |
9975 | temp = (double)nv; | |
9976 | nv = (NV)temp; | |
9977 | } | |
20f6aaab | 9978 | } |
205f51d8 AS |
9979 | |
9980 | # undef MY_DBL_MAX | |
9981 | # undef MY_DBL_MAX_BUG | |
9982 | # undef MY_DBL_MIN | |
9983 | ||
20f6aaab AS |
9984 | #endif /* HAS_LDBL_SPRINTF_BUG */ |
9985 | ||
46fc3d4c | 9986 | need += 20; /* fudge factor */ |
80252599 GS |
9987 | if (PL_efloatsize < need) { |
9988 | Safefree(PL_efloatbuf); | |
9989 | PL_efloatsize = need + 20; /* more fudge */ | |
9990 | New(906, PL_efloatbuf, PL_efloatsize, char); | |
7d5ea4e7 | 9991 | PL_efloatbuf[0] = '\0'; |
46fc3d4c | 9992 | } |
9993 | ||
4151a5fe IZ |
9994 | if ( !(width || left || plus || alt) && fill != '0' |
9995 | && has_precis && intsize != 'q' ) { /* Shortcuts */ | |
2873255c NC |
9996 | /* See earlier comment about buggy Gconvert when digits, |
9997 | aka precis is 0 */ | |
9998 | if ( c == 'g' && precis) { | |
2e59c212 | 9999 | Gconvert((NV)nv, (int)precis, 0, PL_efloatbuf); |
4151a5fe IZ |
10000 | if (*PL_efloatbuf) /* May return an empty string for digits==0 */ |
10001 | goto float_converted; | |
10002 | } else if ( c == 'f' && !precis) { | |
10003 | if ((eptr = F0convert(nv, ebuf + sizeof ebuf, &elen))) | |
10004 | break; | |
10005 | } | |
10006 | } | |
46fc3d4c | 10007 | eptr = ebuf + sizeof ebuf; |
10008 | *--eptr = '\0'; | |
10009 | *--eptr = c; | |
9e5b023a JH |
10010 | /* FIXME: what to do if HAS_LONG_DOUBLE but not PERL_PRIfldbl? */ |
10011 | #if defined(HAS_LONG_DOUBLE) && defined(PERL_PRIfldbl) | |
10012 | if (intsize == 'q') { | |
e5c81feb JH |
10013 | /* Copy the one or more characters in a long double |
10014 | * format before the 'base' ([efgEFG]) character to | |
10015 | * the format string. */ | |
10016 | static char const prifldbl[] = PERL_PRIfldbl; | |
10017 | char const *p = prifldbl + sizeof(prifldbl) - 3; | |
10018 | while (p >= prifldbl) { *--eptr = *p--; } | |
cf2093f6 | 10019 | } |
65202027 | 10020 | #endif |
46fc3d4c | 10021 | if (has_precis) { |
10022 | base = precis; | |
10023 | do { *--eptr = '0' + (base % 10); } while (base /= 10); | |
10024 | *--eptr = '.'; | |
10025 | } | |
10026 | if (width) { | |
10027 | base = width; | |
10028 | do { *--eptr = '0' + (base % 10); } while (base /= 10); | |
10029 | } | |
10030 | if (fill == '0') | |
10031 | *--eptr = fill; | |
84902520 TB |
10032 | if (left) |
10033 | *--eptr = '-'; | |
46fc3d4c | 10034 | if (plus) |
10035 | *--eptr = plus; | |
10036 | if (alt) | |
10037 | *--eptr = '#'; | |
10038 | *--eptr = '%'; | |
10039 | ||
ff9121f8 JH |
10040 | /* No taint. Otherwise we are in the strange situation |
10041 | * where printf() taints but print($float) doesn't. | |
bda0f7a5 | 10042 | * --jhi */ |
9e5b023a JH |
10043 | #if defined(HAS_LONG_DOUBLE) |
10044 | if (intsize == 'q') | |
10045 | (void)sprintf(PL_efloatbuf, eptr, nv); | |
10046 | else | |
10047 | (void)sprintf(PL_efloatbuf, eptr, (double)nv); | |
10048 | #else | |
dd8482fc | 10049 | (void)sprintf(PL_efloatbuf, eptr, nv); |
9e5b023a | 10050 | #endif |
4151a5fe | 10051 | float_converted: |
80252599 GS |
10052 | eptr = PL_efloatbuf; |
10053 | elen = strlen(PL_efloatbuf); | |
46fc3d4c | 10054 | break; |
10055 | ||
fc36a67e | 10056 | /* SPECIAL */ |
10057 | ||
10058 | case 'n': | |
10059 | i = SvCUR(sv) - origlen; | |
be75b157 | 10060 | if (args && !vectorize) { |
c635e13b | 10061 | switch (intsize) { |
10062 | case 'h': *(va_arg(*args, short*)) = i; break; | |
10063 | default: *(va_arg(*args, int*)) = i; break; | |
10064 | case 'l': *(va_arg(*args, long*)) = i; break; | |
10065 | case 'V': *(va_arg(*args, IV*)) = i; break; | |
cf2093f6 JH |
10066 | #ifdef HAS_QUAD |
10067 | case 'q': *(va_arg(*args, Quad_t*)) = i; break; | |
10068 | #endif | |
c635e13b | 10069 | } |
fc36a67e | 10070 | } |
9dd79c3f | 10071 | else |
211dfcf1 | 10072 | sv_setuv_mg(argsv, (UV)i); |
be75b157 | 10073 | vectorize = FALSE; |
fc36a67e | 10074 | continue; /* not "break" */ |
10075 | ||
10076 | /* UNKNOWN */ | |
10077 | ||
46fc3d4c | 10078 | default: |
fc36a67e | 10079 | unknown: |
599cee73 | 10080 | if (!args && ckWARN(WARN_PRINTF) && |
533c011a | 10081 | (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) { |
c635e13b | 10082 | SV *msg = sv_newmortal(); |
35c1215d NC |
10083 | Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %sprintf: ", |
10084 | (PL_op->op_type == OP_PRTF) ? "" : "s"); | |
0f4b6630 | 10085 | if (c) { |
0f4b6630 | 10086 | if (isPRINT(c)) |
1c846c1f | 10087 | Perl_sv_catpvf(aTHX_ msg, |
0f4b6630 JH |
10088 | "\"%%%c\"", c & 0xFF); |
10089 | else | |
10090 | Perl_sv_catpvf(aTHX_ msg, | |
57def98f | 10091 | "\"%%\\%03"UVof"\"", |
0f4b6630 | 10092 | (UV)c & 0xFF); |
0f4b6630 | 10093 | } else |
c635e13b | 10094 | sv_catpv(msg, "end of string"); |
9014280d | 10095 | Perl_warner(aTHX_ packWARN(WARN_PRINTF), "%"SVf, msg); /* yes, this is reentrant */ |
c635e13b | 10096 | } |
fb73857a | 10097 | |
10098 | /* output mangled stuff ... */ | |
10099 | if (c == '\0') | |
10100 | --q; | |
46fc3d4c | 10101 | eptr = p; |
10102 | elen = q - p; | |
fb73857a | 10103 | |
10104 | /* ... right here, because formatting flags should not apply */ | |
10105 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
10106 | p = SvEND(sv); | |
4459522c | 10107 | Copy(eptr, p, elen, char); |
fb73857a | 10108 | p += elen; |
10109 | *p = '\0'; | |
10110 | SvCUR(sv) = p - SvPVX(sv); | |
58e33a90 | 10111 | svix = osvix; |
fb73857a | 10112 | continue; /* not "break" */ |
46fc3d4c | 10113 | } |
10114 | ||
6c94ec8b HS |
10115 | /* calculate width before utf8_upgrade changes it */ |
10116 | have = esignlen + zeros + elen; | |
10117 | ||
d2876be5 JH |
10118 | if (is_utf8 != has_utf8) { |
10119 | if (is_utf8) { | |
10120 | if (SvCUR(sv)) | |
10121 | sv_utf8_upgrade(sv); | |
10122 | } | |
10123 | else { | |
10124 | SV *nsv = sv_2mortal(newSVpvn(eptr, elen)); | |
10125 | sv_utf8_upgrade(nsv); | |
10126 | eptr = SvPVX(nsv); | |
10127 | elen = SvCUR(nsv); | |
10128 | } | |
10129 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
10130 | p = SvEND(sv); | |
10131 | *p = '\0'; | |
10132 | } | |
6af65485 | 10133 | |
46fc3d4c | 10134 | need = (have > width ? have : width); |
10135 | gap = need - have; | |
10136 | ||
b22c7a20 | 10137 | SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1); |
46fc3d4c | 10138 | p = SvEND(sv); |
10139 | if (esignlen && fill == '0') { | |
eb160463 | 10140 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 10141 | *p++ = esignbuf[i]; |
10142 | } | |
10143 | if (gap && !left) { | |
10144 | memset(p, fill, gap); | |
10145 | p += gap; | |
10146 | } | |
10147 | if (esignlen && fill != '0') { | |
eb160463 | 10148 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 10149 | *p++ = esignbuf[i]; |
10150 | } | |
fc36a67e | 10151 | if (zeros) { |
10152 | for (i = zeros; i; i--) | |
10153 | *p++ = '0'; | |
10154 | } | |
46fc3d4c | 10155 | if (elen) { |
4459522c | 10156 | Copy(eptr, p, elen, char); |
46fc3d4c | 10157 | p += elen; |
10158 | } | |
10159 | if (gap && left) { | |
10160 | memset(p, ' ', gap); | |
10161 | p += gap; | |
10162 | } | |
b22c7a20 GS |
10163 | if (vectorize) { |
10164 | if (veclen) { | |
4459522c | 10165 | Copy(dotstr, p, dotstrlen, char); |
b22c7a20 GS |
10166 | p += dotstrlen; |
10167 | } | |
10168 | else | |
10169 | vectorize = FALSE; /* done iterating over vecstr */ | |
10170 | } | |
2cf2cfc6 A |
10171 | if (is_utf8) |
10172 | has_utf8 = TRUE; | |
10173 | if (has_utf8) | |
7e2040f0 | 10174 | SvUTF8_on(sv); |
46fc3d4c | 10175 | *p = '\0'; |
10176 | SvCUR(sv) = p - SvPVX(sv); | |
b22c7a20 GS |
10177 | if (vectorize) { |
10178 | esignlen = 0; | |
10179 | goto vector; | |
10180 | } | |
46fc3d4c | 10181 | } |
10182 | } | |
51371543 | 10183 | |
645c22ef DM |
10184 | /* ========================================================================= |
10185 | ||
10186 | =head1 Cloning an interpreter | |
10187 | ||
10188 | All the macros and functions in this section are for the private use of | |
10189 | the main function, perl_clone(). | |
10190 | ||
10191 | The foo_dup() functions make an exact copy of an existing foo thinngy. | |
10192 | During the course of a cloning, a hash table is used to map old addresses | |
10193 | to new addresses. The table is created and manipulated with the | |
10194 | ptr_table_* functions. | |
10195 | ||
10196 | =cut | |
10197 | ||
10198 | ============================================================================*/ | |
10199 | ||
10200 | ||
1d7c1841 GS |
10201 | #if defined(USE_ITHREADS) |
10202 | ||
1d7c1841 GS |
10203 | #ifndef GpREFCNT_inc |
10204 | # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL) | |
10205 | #endif | |
10206 | ||
10207 | ||
d2d73c3e AB |
10208 | #define sv_dup_inc(s,t) SvREFCNT_inc(sv_dup(s,t)) |
10209 | #define av_dup(s,t) (AV*)sv_dup((SV*)s,t) | |
10210 | #define av_dup_inc(s,t) (AV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
10211 | #define hv_dup(s,t) (HV*)sv_dup((SV*)s,t) | |
10212 | #define hv_dup_inc(s,t) (HV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
10213 | #define cv_dup(s,t) (CV*)sv_dup((SV*)s,t) | |
10214 | #define cv_dup_inc(s,t) (CV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
10215 | #define io_dup(s,t) (IO*)sv_dup((SV*)s,t) | |
10216 | #define io_dup_inc(s,t) (IO*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
10217 | #define gv_dup(s,t) (GV*)sv_dup((SV*)s,t) | |
10218 | #define gv_dup_inc(s,t) (GV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
1d7c1841 GS |
10219 | #define SAVEPV(p) (p ? savepv(p) : Nullch) |
10220 | #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch) | |
8cf8f3d1 | 10221 | |
d2d73c3e | 10222 | |
d2f185dc AMS |
10223 | /* Duplicate a regexp. Required reading: pregcomp() and pregfree() in |
10224 | regcomp.c. AMS 20010712 */ | |
645c22ef | 10225 | |
1d7c1841 | 10226 | REGEXP * |
a8fc9800 | 10227 | Perl_re_dup(pTHX_ REGEXP *r, CLONE_PARAMS *param) |
1d7c1841 | 10228 | { |
d2f185dc AMS |
10229 | REGEXP *ret; |
10230 | int i, len, npar; | |
10231 | struct reg_substr_datum *s; | |
10232 | ||
10233 | if (!r) | |
10234 | return (REGEXP *)NULL; | |
10235 | ||
10236 | if ((ret = (REGEXP *)ptr_table_fetch(PL_ptr_table, r))) | |
10237 | return ret; | |
10238 | ||
10239 | len = r->offsets[0]; | |
10240 | npar = r->nparens+1; | |
10241 | ||
10242 | Newc(0, ret, sizeof(regexp) + (len+1)*sizeof(regnode), char, regexp); | |
10243 | Copy(r->program, ret->program, len+1, regnode); | |
10244 | ||
10245 | New(0, ret->startp, npar, I32); | |
10246 | Copy(r->startp, ret->startp, npar, I32); | |
10247 | New(0, ret->endp, npar, I32); | |
10248 | Copy(r->startp, ret->startp, npar, I32); | |
10249 | ||
d2f185dc AMS |
10250 | New(0, ret->substrs, 1, struct reg_substr_data); |
10251 | for (s = ret->substrs->data, i = 0; i < 3; i++, s++) { | |
10252 | s->min_offset = r->substrs->data[i].min_offset; | |
10253 | s->max_offset = r->substrs->data[i].max_offset; | |
10254 | s->substr = sv_dup_inc(r->substrs->data[i].substr, param); | |
33b8afdf | 10255 | s->utf8_substr = sv_dup_inc(r->substrs->data[i].utf8_substr, param); |
d2f185dc AMS |
10256 | } |
10257 | ||
70612e96 | 10258 | ret->regstclass = NULL; |
d2f185dc AMS |
10259 | if (r->data) { |
10260 | struct reg_data *d; | |
e1ec3a88 | 10261 | const int count = r->data->count; |
d2f185dc AMS |
10262 | |
10263 | Newc(0, d, sizeof(struct reg_data) + count*sizeof(void *), | |
10264 | char, struct reg_data); | |
10265 | New(0, d->what, count, U8); | |
10266 | ||
10267 | d->count = count; | |
10268 | for (i = 0; i < count; i++) { | |
10269 | d->what[i] = r->data->what[i]; | |
10270 | switch (d->what[i]) { | |
a3621e74 YO |
10271 | /* legal options are one of: sfpont |
10272 | see also regcomp.h and pregfree() */ | |
d2f185dc AMS |
10273 | case 's': |
10274 | d->data[i] = sv_dup_inc((SV *)r->data->data[i], param); | |
10275 | break; | |
10276 | case 'p': | |
10277 | d->data[i] = av_dup_inc((AV *)r->data->data[i], param); | |
10278 | break; | |
10279 | case 'f': | |
10280 | /* This is cheating. */ | |
10281 | New(0, d->data[i], 1, struct regnode_charclass_class); | |
10282 | StructCopy(r->data->data[i], d->data[i], | |
10283 | struct regnode_charclass_class); | |
70612e96 | 10284 | ret->regstclass = (regnode*)d->data[i]; |
d2f185dc AMS |
10285 | break; |
10286 | case 'o': | |
33773810 AMS |
10287 | /* Compiled op trees are readonly, and can thus be |
10288 | shared without duplication. */ | |
b34c0dd4 | 10289 | OP_REFCNT_LOCK; |
9b978d73 | 10290 | d->data[i] = (void*)OpREFCNT_inc((OP*)r->data->data[i]); |
b34c0dd4 | 10291 | OP_REFCNT_UNLOCK; |
9b978d73 | 10292 | break; |
d2f185dc AMS |
10293 | case 'n': |
10294 | d->data[i] = r->data->data[i]; | |
10295 | break; | |
a3621e74 YO |
10296 | case 't': |
10297 | d->data[i] = r->data->data[i]; | |
10298 | OP_REFCNT_LOCK; | |
10299 | ((reg_trie_data*)d->data[i])->refcount++; | |
10300 | OP_REFCNT_UNLOCK; | |
10301 | break; | |
10302 | default: | |
10303 | Perl_croak(aTHX_ "panic: re_dup unknown data code '%c'", r->data->what[i]); | |
d2f185dc AMS |
10304 | } |
10305 | } | |
10306 | ||
10307 | ret->data = d; | |
10308 | } | |
10309 | else | |
10310 | ret->data = NULL; | |
10311 | ||
10312 | New(0, ret->offsets, 2*len+1, U32); | |
10313 | Copy(r->offsets, ret->offsets, 2*len+1, U32); | |
10314 | ||
e01c5899 | 10315 | ret->precomp = SAVEPVN(r->precomp, r->prelen); |
d2f185dc AMS |
10316 | ret->refcnt = r->refcnt; |
10317 | ret->minlen = r->minlen; | |
10318 | ret->prelen = r->prelen; | |
10319 | ret->nparens = r->nparens; | |
10320 | ret->lastparen = r->lastparen; | |
10321 | ret->lastcloseparen = r->lastcloseparen; | |
10322 | ret->reganch = r->reganch; | |
10323 | ||
70612e96 RG |
10324 | ret->sublen = r->sublen; |
10325 | ||
10326 | if (RX_MATCH_COPIED(ret)) | |
e01c5899 | 10327 | ret->subbeg = SAVEPVN(r->subbeg, r->sublen); |
70612e96 RG |
10328 | else |
10329 | ret->subbeg = Nullch; | |
9a26048b NC |
10330 | #ifdef PERL_COPY_ON_WRITE |
10331 | ret->saved_copy = Nullsv; | |
10332 | #endif | |
70612e96 | 10333 | |
d2f185dc AMS |
10334 | ptr_table_store(PL_ptr_table, r, ret); |
10335 | return ret; | |
1d7c1841 GS |
10336 | } |
10337 | ||
d2d73c3e | 10338 | /* duplicate a file handle */ |
645c22ef | 10339 | |
1d7c1841 | 10340 | PerlIO * |
a8fc9800 | 10341 | Perl_fp_dup(pTHX_ PerlIO *fp, char type, CLONE_PARAMS *param) |
1d7c1841 GS |
10342 | { |
10343 | PerlIO *ret; | |
73d840c0 AL |
10344 | (void)type; |
10345 | ||
1d7c1841 GS |
10346 | if (!fp) |
10347 | return (PerlIO*)NULL; | |
10348 | ||
10349 | /* look for it in the table first */ | |
10350 | ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp); | |
10351 | if (ret) | |
10352 | return ret; | |
10353 | ||
10354 | /* create anew and remember what it is */ | |
ecdeb87c | 10355 | ret = PerlIO_fdupopen(aTHX_ fp, param, PERLIO_DUP_CLONE); |
1d7c1841 GS |
10356 | ptr_table_store(PL_ptr_table, fp, ret); |
10357 | return ret; | |
10358 | } | |
10359 | ||
645c22ef DM |
10360 | /* duplicate a directory handle */ |
10361 | ||
1d7c1841 GS |
10362 | DIR * |
10363 | Perl_dirp_dup(pTHX_ DIR *dp) | |
10364 | { | |
10365 | if (!dp) | |
10366 | return (DIR*)NULL; | |
10367 | /* XXX TODO */ | |
10368 | return dp; | |
10369 | } | |
10370 | ||
ff276b08 | 10371 | /* duplicate a typeglob */ |
645c22ef | 10372 | |
1d7c1841 | 10373 | GP * |
a8fc9800 | 10374 | Perl_gp_dup(pTHX_ GP *gp, CLONE_PARAMS* param) |
1d7c1841 GS |
10375 | { |
10376 | GP *ret; | |
10377 | if (!gp) | |
10378 | return (GP*)NULL; | |
10379 | /* look for it in the table first */ | |
10380 | ret = (GP*)ptr_table_fetch(PL_ptr_table, gp); | |
10381 | if (ret) | |
10382 | return ret; | |
10383 | ||
10384 | /* create anew and remember what it is */ | |
10385 | Newz(0, ret, 1, GP); | |
10386 | ptr_table_store(PL_ptr_table, gp, ret); | |
10387 | ||
10388 | /* clone */ | |
10389 | ret->gp_refcnt = 0; /* must be before any other dups! */ | |
d2d73c3e AB |
10390 | ret->gp_sv = sv_dup_inc(gp->gp_sv, param); |
10391 | ret->gp_io = io_dup_inc(gp->gp_io, param); | |
10392 | ret->gp_form = cv_dup_inc(gp->gp_form, param); | |
10393 | ret->gp_av = av_dup_inc(gp->gp_av, param); | |
10394 | ret->gp_hv = hv_dup_inc(gp->gp_hv, param); | |
10395 | ret->gp_egv = gv_dup(gp->gp_egv, param);/* GvEGV is not refcounted */ | |
10396 | ret->gp_cv = cv_dup_inc(gp->gp_cv, param); | |
1d7c1841 GS |
10397 | ret->gp_cvgen = gp->gp_cvgen; |
10398 | ret->gp_flags = gp->gp_flags; | |
10399 | ret->gp_line = gp->gp_line; | |
10400 | ret->gp_file = gp->gp_file; /* points to COP.cop_file */ | |
10401 | return ret; | |
10402 | } | |
10403 | ||
645c22ef DM |
10404 | /* duplicate a chain of magic */ |
10405 | ||
1d7c1841 | 10406 | MAGIC * |
a8fc9800 | 10407 | Perl_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS* param) |
1d7c1841 | 10408 | { |
cb359b41 JH |
10409 | MAGIC *mgprev = (MAGIC*)NULL; |
10410 | MAGIC *mgret; | |
1d7c1841 GS |
10411 | if (!mg) |
10412 | return (MAGIC*)NULL; | |
10413 | /* look for it in the table first */ | |
10414 | mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg); | |
10415 | if (mgret) | |
10416 | return mgret; | |
10417 | ||
10418 | for (; mg; mg = mg->mg_moremagic) { | |
10419 | MAGIC *nmg; | |
10420 | Newz(0, nmg, 1, MAGIC); | |
cb359b41 | 10421 | if (mgprev) |
1d7c1841 | 10422 | mgprev->mg_moremagic = nmg; |
cb359b41 JH |
10423 | else |
10424 | mgret = nmg; | |
1d7c1841 GS |
10425 | nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */ |
10426 | nmg->mg_private = mg->mg_private; | |
10427 | nmg->mg_type = mg->mg_type; | |
10428 | nmg->mg_flags = mg->mg_flags; | |
14befaf4 | 10429 | if (mg->mg_type == PERL_MAGIC_qr) { |
d2f185dc | 10430 | nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj, param); |
1d7c1841 | 10431 | } |
05bd4103 | 10432 | else if(mg->mg_type == PERL_MAGIC_backref) { |
7fc63493 | 10433 | const AV * const av = (AV*) mg->mg_obj; |
fdc9a813 AE |
10434 | SV **svp; |
10435 | I32 i; | |
7fc63493 | 10436 | (void)SvREFCNT_inc(nmg->mg_obj = (SV*)newAV()); |
fdc9a813 AE |
10437 | svp = AvARRAY(av); |
10438 | for (i = AvFILLp(av); i >= 0; i--) { | |
3a81978b | 10439 | if (!svp[i]) continue; |
fdc9a813 AE |
10440 | av_push((AV*)nmg->mg_obj,sv_dup(svp[i],param)); |
10441 | } | |
05bd4103 | 10442 | } |
1d7c1841 GS |
10443 | else { |
10444 | nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED) | |
d2d73c3e AB |
10445 | ? sv_dup_inc(mg->mg_obj, param) |
10446 | : sv_dup(mg->mg_obj, param); | |
1d7c1841 GS |
10447 | } |
10448 | nmg->mg_len = mg->mg_len; | |
10449 | nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */ | |
14befaf4 | 10450 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
68795e93 | 10451 | if (mg->mg_len > 0) { |
1d7c1841 | 10452 | nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len); |
14befaf4 DM |
10453 | if (mg->mg_type == PERL_MAGIC_overload_table && |
10454 | AMT_AMAGIC((AMT*)mg->mg_ptr)) | |
10455 | { | |
1d7c1841 GS |
10456 | AMT *amtp = (AMT*)mg->mg_ptr; |
10457 | AMT *namtp = (AMT*)nmg->mg_ptr; | |
10458 | I32 i; | |
10459 | for (i = 1; i < NofAMmeth; i++) { | |
d2d73c3e | 10460 | namtp->table[i] = cv_dup_inc(amtp->table[i], param); |
1d7c1841 GS |
10461 | } |
10462 | } | |
10463 | } | |
10464 | else if (mg->mg_len == HEf_SVKEY) | |
d2d73c3e | 10465 | nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr, param); |
1d7c1841 | 10466 | } |
68795e93 NIS |
10467 | if ((mg->mg_flags & MGf_DUP) && mg->mg_virtual && mg->mg_virtual->svt_dup) { |
10468 | CALL_FPTR(nmg->mg_virtual->svt_dup)(aTHX_ nmg, param); | |
10469 | } | |
1d7c1841 GS |
10470 | mgprev = nmg; |
10471 | } | |
10472 | return mgret; | |
10473 | } | |
10474 | ||
645c22ef DM |
10475 | /* create a new pointer-mapping table */ |
10476 | ||
1d7c1841 GS |
10477 | PTR_TBL_t * |
10478 | Perl_ptr_table_new(pTHX) | |
10479 | { | |
10480 | PTR_TBL_t *tbl; | |
10481 | Newz(0, tbl, 1, PTR_TBL_t); | |
10482 | tbl->tbl_max = 511; | |
10483 | tbl->tbl_items = 0; | |
10484 | Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*); | |
10485 | return tbl; | |
10486 | } | |
10487 | ||
134ca3d6 DM |
10488 | #if (PTRSIZE == 8) |
10489 | # define PTR_TABLE_HASH(ptr) (PTR2UV(ptr) >> 3) | |
10490 | #else | |
10491 | # define PTR_TABLE_HASH(ptr) (PTR2UV(ptr) >> 2) | |
10492 | #endif | |
10493 | ||
645c22ef DM |
10494 | /* map an existing pointer using a table */ |
10495 | ||
1d7c1841 GS |
10496 | void * |
10497 | Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv) | |
10498 | { | |
10499 | PTR_TBL_ENT_t *tblent; | |
134ca3d6 | 10500 | UV hash = PTR_TABLE_HASH(sv); |
1d7c1841 GS |
10501 | assert(tbl); |
10502 | tblent = tbl->tbl_ary[hash & tbl->tbl_max]; | |
10503 | for (; tblent; tblent = tblent->next) { | |
10504 | if (tblent->oldval == sv) | |
10505 | return tblent->newval; | |
10506 | } | |
10507 | return (void*)NULL; | |
10508 | } | |
10509 | ||
645c22ef DM |
10510 | /* add a new entry to a pointer-mapping table */ |
10511 | ||
1d7c1841 GS |
10512 | void |
10513 | Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv) | |
10514 | { | |
10515 | PTR_TBL_ENT_t *tblent, **otblent; | |
10516 | /* XXX this may be pessimal on platforms where pointers aren't good | |
10517 | * hash values e.g. if they grow faster in the most significant | |
10518 | * bits */ | |
134ca3d6 | 10519 | UV hash = PTR_TABLE_HASH(oldv); |
14cade97 | 10520 | bool empty = 1; |
1d7c1841 GS |
10521 | |
10522 | assert(tbl); | |
10523 | otblent = &tbl->tbl_ary[hash & tbl->tbl_max]; | |
14cade97 | 10524 | for (tblent = *otblent; tblent; empty=0, tblent = tblent->next) { |
1d7c1841 GS |
10525 | if (tblent->oldval == oldv) { |
10526 | tblent->newval = newv; | |
1d7c1841 GS |
10527 | return; |
10528 | } | |
10529 | } | |
10530 | Newz(0, tblent, 1, PTR_TBL_ENT_t); | |
10531 | tblent->oldval = oldv; | |
10532 | tblent->newval = newv; | |
10533 | tblent->next = *otblent; | |
10534 | *otblent = tblent; | |
10535 | tbl->tbl_items++; | |
14cade97 | 10536 | if (!empty && tbl->tbl_items > tbl->tbl_max) |
1d7c1841 GS |
10537 | ptr_table_split(tbl); |
10538 | } | |
10539 | ||
645c22ef DM |
10540 | /* double the hash bucket size of an existing ptr table */ |
10541 | ||
1d7c1841 GS |
10542 | void |
10543 | Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl) | |
10544 | { | |
10545 | PTR_TBL_ENT_t **ary = tbl->tbl_ary; | |
10546 | UV oldsize = tbl->tbl_max + 1; | |
10547 | UV newsize = oldsize * 2; | |
10548 | UV i; | |
10549 | ||
10550 | Renew(ary, newsize, PTR_TBL_ENT_t*); | |
10551 | Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*); | |
10552 | tbl->tbl_max = --newsize; | |
10553 | tbl->tbl_ary = ary; | |
10554 | for (i=0; i < oldsize; i++, ary++) { | |
10555 | PTR_TBL_ENT_t **curentp, **entp, *ent; | |
10556 | if (!*ary) | |
10557 | continue; | |
10558 | curentp = ary + oldsize; | |
10559 | for (entp = ary, ent = *ary; ent; ent = *entp) { | |
134ca3d6 | 10560 | if ((newsize & PTR_TABLE_HASH(ent->oldval)) != i) { |
1d7c1841 GS |
10561 | *entp = ent->next; |
10562 | ent->next = *curentp; | |
10563 | *curentp = ent; | |
10564 | continue; | |
10565 | } | |
10566 | else | |
10567 | entp = &ent->next; | |
10568 | } | |
10569 | } | |
10570 | } | |
10571 | ||
645c22ef DM |
10572 | /* remove all the entries from a ptr table */ |
10573 | ||
a0739874 DM |
10574 | void |
10575 | Perl_ptr_table_clear(pTHX_ PTR_TBL_t *tbl) | |
10576 | { | |
10577 | register PTR_TBL_ENT_t **array; | |
10578 | register PTR_TBL_ENT_t *entry; | |
10579 | register PTR_TBL_ENT_t *oentry = Null(PTR_TBL_ENT_t*); | |
10580 | UV riter = 0; | |
10581 | UV max; | |
10582 | ||
10583 | if (!tbl || !tbl->tbl_items) { | |
10584 | return; | |
10585 | } | |
10586 | ||
10587 | array = tbl->tbl_ary; | |
10588 | entry = array[0]; | |
10589 | max = tbl->tbl_max; | |
10590 | ||
10591 | for (;;) { | |
10592 | if (entry) { | |
10593 | oentry = entry; | |
10594 | entry = entry->next; | |
10595 | Safefree(oentry); | |
10596 | } | |
10597 | if (!entry) { | |
10598 | if (++riter > max) { | |
10599 | break; | |
10600 | } | |
10601 | entry = array[riter]; | |
10602 | } | |
10603 | } | |
10604 | ||
10605 | tbl->tbl_items = 0; | |
10606 | } | |
10607 | ||
645c22ef DM |
10608 | /* clear and free a ptr table */ |
10609 | ||
a0739874 DM |
10610 | void |
10611 | Perl_ptr_table_free(pTHX_ PTR_TBL_t *tbl) | |
10612 | { | |
10613 | if (!tbl) { | |
10614 | return; | |
10615 | } | |
10616 | ptr_table_clear(tbl); | |
10617 | Safefree(tbl->tbl_ary); | |
10618 | Safefree(tbl); | |
10619 | } | |
10620 | ||
1d7c1841 GS |
10621 | #ifdef DEBUGGING |
10622 | char *PL_watch_pvx; | |
10623 | #endif | |
10624 | ||
645c22ef DM |
10625 | /* attempt to make everything in the typeglob readonly */ |
10626 | ||
5bd07a3d | 10627 | STATIC SV * |
59b40662 | 10628 | S_gv_share(pTHX_ SV *sstr, CLONE_PARAMS *param) |
5bd07a3d DM |
10629 | { |
10630 | GV *gv = (GV*)sstr; | |
59b40662 | 10631 | SV *sv = ¶m->proto_perl->Isv_no; /* just need SvREADONLY-ness */ |
5bd07a3d DM |
10632 | |
10633 | if (GvIO(gv) || GvFORM(gv)) { | |
7fb37951 | 10634 | GvUNIQUE_off(gv); /* GvIOs cannot be shared. nor can GvFORMs */ |
5bd07a3d DM |
10635 | } |
10636 | else if (!GvCV(gv)) { | |
10637 | GvCV(gv) = (CV*)sv; | |
10638 | } | |
10639 | else { | |
10640 | /* CvPADLISTs cannot be shared */ | |
37e20706 | 10641 | if (!SvREADONLY(GvCV(gv)) && !CvXSUB(GvCV(gv))) { |
7fb37951 | 10642 | GvUNIQUE_off(gv); |
5bd07a3d DM |
10643 | } |
10644 | } | |
10645 | ||
7fb37951 | 10646 | if (!GvUNIQUE(gv)) { |
5bd07a3d DM |
10647 | #if 0 |
10648 | PerlIO_printf(Perl_debug_log, "gv_share: unable to share %s::%s\n", | |
10649 | HvNAME(GvSTASH(gv)), GvNAME(gv)); | |
10650 | #endif | |
10651 | return Nullsv; | |
10652 | } | |
10653 | ||
4411f3b6 | 10654 | /* |
5bd07a3d DM |
10655 | * write attempts will die with |
10656 | * "Modification of a read-only value attempted" | |
10657 | */ | |
10658 | if (!GvSV(gv)) { | |
10659 | GvSV(gv) = sv; | |
10660 | } | |
10661 | else { | |
10662 | SvREADONLY_on(GvSV(gv)); | |
10663 | } | |
10664 | ||
10665 | if (!GvAV(gv)) { | |
10666 | GvAV(gv) = (AV*)sv; | |
10667 | } | |
10668 | else { | |
10669 | SvREADONLY_on(GvAV(gv)); | |
10670 | } | |
10671 | ||
10672 | if (!GvHV(gv)) { | |
10673 | GvHV(gv) = (HV*)sv; | |
10674 | } | |
10675 | else { | |
53c33732 | 10676 | SvREADONLY_on(GvHV(gv)); |
5bd07a3d DM |
10677 | } |
10678 | ||
10679 | return sstr; /* he_dup() will SvREFCNT_inc() */ | |
10680 | } | |
10681 | ||
645c22ef DM |
10682 | /* duplicate an SV of any type (including AV, HV etc) */ |
10683 | ||
83841fad NIS |
10684 | void |
10685 | Perl_rvpv_dup(pTHX_ SV *dstr, SV *sstr, CLONE_PARAMS* param) | |
10686 | { | |
10687 | if (SvROK(sstr)) { | |
d3d0e6f1 | 10688 | SvRV(dstr) = SvWEAKREF(sstr) |
83841fad NIS |
10689 | ? sv_dup(SvRV(sstr), param) |
10690 | : sv_dup_inc(SvRV(sstr), param); | |
10691 | } | |
10692 | else if (SvPVX(sstr)) { | |
10693 | /* Has something there */ | |
10694 | if (SvLEN(sstr)) { | |
68795e93 | 10695 | /* Normal PV - clone whole allocated space */ |
83841fad | 10696 | SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1); |
d3d0e6f1 NC |
10697 | if (SvREADONLY(sstr) && SvFAKE(sstr)) { |
10698 | /* Not that normal - actually sstr is copy on write. | |
10699 | But we are a true, independant SV, so: */ | |
10700 | SvREADONLY_off(dstr); | |
10701 | SvFAKE_off(dstr); | |
10702 | } | |
68795e93 | 10703 | } |
83841fad NIS |
10704 | else { |
10705 | /* Special case - not normally malloced for some reason */ | |
10706 | if (SvREADONLY(sstr) && SvFAKE(sstr)) { | |
10707 | /* A "shared" PV - clone it as unshared string */ | |
281b2760 | 10708 | if(SvPADTMP(sstr)) { |
5e6160dc AB |
10709 | /* However, some of them live in the pad |
10710 | and they should not have these flags | |
10711 | turned off */ | |
281b2760 AB |
10712 | |
10713 | SvPVX(dstr) = sharepvn(SvPVX(sstr), SvCUR(sstr), | |
10714 | SvUVX(sstr)); | |
10715 | SvUVX(dstr) = SvUVX(sstr); | |
10716 | } else { | |
10717 | ||
10718 | SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvCUR(sstr)); | |
10719 | SvFAKE_off(dstr); | |
10720 | SvREADONLY_off(dstr); | |
5e6160dc | 10721 | } |
83841fad NIS |
10722 | } |
10723 | else { | |
10724 | /* Some other special case - random pointer */ | |
10725 | SvPVX(dstr) = SvPVX(sstr); | |
d3d0e6f1 | 10726 | } |
83841fad NIS |
10727 | } |
10728 | } | |
10729 | else { | |
10730 | /* Copy the Null */ | |
10731 | SvPVX(dstr) = SvPVX(sstr); | |
10732 | } | |
10733 | } | |
10734 | ||
1d7c1841 | 10735 | SV * |
a8fc9800 | 10736 | Perl_sv_dup(pTHX_ SV *sstr, CLONE_PARAMS* param) |
1d7c1841 | 10737 | { |
1d7c1841 GS |
10738 | SV *dstr; |
10739 | ||
10740 | if (!sstr || SvTYPE(sstr) == SVTYPEMASK) | |
10741 | return Nullsv; | |
10742 | /* look for it in the table first */ | |
10743 | dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr); | |
10744 | if (dstr) | |
10745 | return dstr; | |
10746 | ||
0405e91e AB |
10747 | if(param->flags & CLONEf_JOIN_IN) { |
10748 | /** We are joining here so we don't want do clone | |
10749 | something that is bad **/ | |
10750 | ||
10751 | if(SvTYPE(sstr) == SVt_PVHV && | |
10752 | HvNAME(sstr)) { | |
10753 | /** don't clone stashes if they already exist **/ | |
10754 | HV* old_stash = gv_stashpv(HvNAME(sstr),0); | |
10755 | return (SV*) old_stash; | |
10756 | } | |
10757 | } | |
10758 | ||
1d7c1841 GS |
10759 | /* create anew and remember what it is */ |
10760 | new_SV(dstr); | |
fd0854ff DM |
10761 | |
10762 | #ifdef DEBUG_LEAKING_SCALARS | |
10763 | dstr->sv_debug_optype = sstr->sv_debug_optype; | |
10764 | dstr->sv_debug_line = sstr->sv_debug_line; | |
10765 | dstr->sv_debug_inpad = sstr->sv_debug_inpad; | |
10766 | dstr->sv_debug_cloned = 1; | |
10767 | # ifdef NETWARE | |
10768 | dstr->sv_debug_file = savepv(sstr->sv_debug_file); | |
10769 | # else | |
10770 | dstr->sv_debug_file = savesharedpv(sstr->sv_debug_file); | |
10771 | # endif | |
10772 | #endif | |
10773 | ||
1d7c1841 GS |
10774 | ptr_table_store(PL_ptr_table, sstr, dstr); |
10775 | ||
10776 | /* clone */ | |
10777 | SvFLAGS(dstr) = SvFLAGS(sstr); | |
10778 | SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */ | |
10779 | SvREFCNT(dstr) = 0; /* must be before any other dups! */ | |
10780 | ||
10781 | #ifdef DEBUGGING | |
10782 | if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx) | |
10783 | PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n", | |
10784 | PL_watch_pvx, SvPVX(sstr)); | |
10785 | #endif | |
10786 | ||
10787 | switch (SvTYPE(sstr)) { | |
10788 | case SVt_NULL: | |
10789 | SvANY(dstr) = NULL; | |
10790 | break; | |
10791 | case SVt_IV: | |
10792 | SvANY(dstr) = new_XIV(); | |
10793 | SvIVX(dstr) = SvIVX(sstr); | |
10794 | break; | |
10795 | case SVt_NV: | |
10796 | SvANY(dstr) = new_XNV(); | |
10797 | SvNVX(dstr) = SvNVX(sstr); | |
10798 | break; | |
10799 | case SVt_RV: | |
10800 | SvANY(dstr) = new_XRV(); | |
83841fad | 10801 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10802 | break; |
10803 | case SVt_PV: | |
10804 | SvANY(dstr) = new_XPV(); | |
10805 | SvCUR(dstr) = SvCUR(sstr); | |
10806 | SvLEN(dstr) = SvLEN(sstr); | |
83841fad | 10807 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10808 | break; |
10809 | case SVt_PVIV: | |
10810 | SvANY(dstr) = new_XPVIV(); | |
10811 | SvCUR(dstr) = SvCUR(sstr); | |
10812 | SvLEN(dstr) = SvLEN(sstr); | |
10813 | SvIVX(dstr) = SvIVX(sstr); | |
83841fad | 10814 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10815 | break; |
10816 | case SVt_PVNV: | |
10817 | SvANY(dstr) = new_XPVNV(); | |
10818 | SvCUR(dstr) = SvCUR(sstr); | |
10819 | SvLEN(dstr) = SvLEN(sstr); | |
10820 | SvIVX(dstr) = SvIVX(sstr); | |
10821 | SvNVX(dstr) = SvNVX(sstr); | |
83841fad | 10822 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10823 | break; |
10824 | case SVt_PVMG: | |
10825 | SvANY(dstr) = new_XPVMG(); | |
10826 | SvCUR(dstr) = SvCUR(sstr); | |
10827 | SvLEN(dstr) = SvLEN(sstr); | |
10828 | SvIVX(dstr) = SvIVX(sstr); | |
10829 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10830 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10831 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10832 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10833 | break; |
10834 | case SVt_PVBM: | |
10835 | SvANY(dstr) = new_XPVBM(); | |
10836 | SvCUR(dstr) = SvCUR(sstr); | |
10837 | SvLEN(dstr) = SvLEN(sstr); | |
10838 | SvIVX(dstr) = SvIVX(sstr); | |
10839 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10840 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10841 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10842 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10843 | BmRARE(dstr) = BmRARE(sstr); |
10844 | BmUSEFUL(dstr) = BmUSEFUL(sstr); | |
10845 | BmPREVIOUS(dstr)= BmPREVIOUS(sstr); | |
10846 | break; | |
10847 | case SVt_PVLV: | |
10848 | SvANY(dstr) = new_XPVLV(); | |
10849 | SvCUR(dstr) = SvCUR(sstr); | |
10850 | SvLEN(dstr) = SvLEN(sstr); | |
10851 | SvIVX(dstr) = SvIVX(sstr); | |
10852 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10853 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10854 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10855 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10856 | LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */ |
10857 | LvTARGLEN(dstr) = LvTARGLEN(sstr); | |
dd28f7bb DM |
10858 | if (LvTYPE(sstr) == 't') /* for tie: unrefcnted fake (SV**) */ |
10859 | LvTARG(dstr) = dstr; | |
10860 | else if (LvTYPE(sstr) == 'T') /* for tie: fake HE */ | |
10861 | LvTARG(dstr) = (SV*)he_dup((HE*)LvTARG(sstr), 0, param); | |
10862 | else | |
10863 | LvTARG(dstr) = sv_dup_inc(LvTARG(sstr), param); | |
1d7c1841 GS |
10864 | LvTYPE(dstr) = LvTYPE(sstr); |
10865 | break; | |
10866 | case SVt_PVGV: | |
7fb37951 | 10867 | if (GvUNIQUE((GV*)sstr)) { |
5bd07a3d | 10868 | SV *share; |
59b40662 | 10869 | if ((share = gv_share(sstr, param))) { |
5bd07a3d DM |
10870 | del_SV(dstr); |
10871 | dstr = share; | |
37e20706 | 10872 | ptr_table_store(PL_ptr_table, sstr, dstr); |
5bd07a3d DM |
10873 | #if 0 |
10874 | PerlIO_printf(Perl_debug_log, "sv_dup: sharing %s::%s\n", | |
10875 | HvNAME(GvSTASH(share)), GvNAME(share)); | |
10876 | #endif | |
10877 | break; | |
10878 | } | |
10879 | } | |
1d7c1841 GS |
10880 | SvANY(dstr) = new_XPVGV(); |
10881 | SvCUR(dstr) = SvCUR(sstr); | |
10882 | SvLEN(dstr) = SvLEN(sstr); | |
10883 | SvIVX(dstr) = SvIVX(sstr); | |
10884 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10885 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10886 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10887 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10888 | GvNAMELEN(dstr) = GvNAMELEN(sstr); |
10889 | GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr)); | |
d2d73c3e | 10890 | GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr), param); |
1d7c1841 | 10891 | GvFLAGS(dstr) = GvFLAGS(sstr); |
d2d73c3e | 10892 | GvGP(dstr) = gp_dup(GvGP(sstr), param); |
1d7c1841 GS |
10893 | (void)GpREFCNT_inc(GvGP(dstr)); |
10894 | break; | |
10895 | case SVt_PVIO: | |
10896 | SvANY(dstr) = new_XPVIO(); | |
10897 | SvCUR(dstr) = SvCUR(sstr); | |
10898 | SvLEN(dstr) = SvLEN(sstr); | |
10899 | SvIVX(dstr) = SvIVX(sstr); | |
10900 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10901 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10902 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 10903 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
a8fc9800 | 10904 | IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr), param); |
1d7c1841 GS |
10905 | if (IoOFP(sstr) == IoIFP(sstr)) |
10906 | IoOFP(dstr) = IoIFP(dstr); | |
10907 | else | |
a8fc9800 | 10908 | IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr), param); |
1d7c1841 GS |
10909 | /* PL_rsfp_filters entries have fake IoDIRP() */ |
10910 | if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP)) | |
10911 | IoDIRP(dstr) = dirp_dup(IoDIRP(sstr)); | |
10912 | else | |
10913 | IoDIRP(dstr) = IoDIRP(sstr); | |
10914 | IoLINES(dstr) = IoLINES(sstr); | |
10915 | IoPAGE(dstr) = IoPAGE(sstr); | |
10916 | IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr); | |
10917 | IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr); | |
7a5fa8a2 | 10918 | if(IoFLAGS(sstr) & IOf_FAKE_DIRP) { |
5a37521b AB |
10919 | /* I have no idea why fake dirp (rsfps) |
10920 | should be treaded differently but otherwise | |
10921 | we end up with leaks -- sky*/ | |
10922 | IoTOP_GV(dstr) = gv_dup_inc(IoTOP_GV(sstr), param); | |
10923 | IoFMT_GV(dstr) = gv_dup_inc(IoFMT_GV(sstr), param); | |
10924 | IoBOTTOM_GV(dstr) = gv_dup_inc(IoBOTTOM_GV(sstr), param); | |
10925 | } else { | |
10926 | IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr), param); | |
10927 | IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr), param); | |
10928 | IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr), param); | |
10929 | } | |
1d7c1841 | 10930 | IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr)); |
1d7c1841 | 10931 | IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr)); |
1d7c1841 | 10932 | IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr)); |
1d7c1841 GS |
10933 | IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr); |
10934 | IoTYPE(dstr) = IoTYPE(sstr); | |
10935 | IoFLAGS(dstr) = IoFLAGS(sstr); | |
10936 | break; | |
10937 | case SVt_PVAV: | |
10938 | SvANY(dstr) = new_XPVAV(); | |
10939 | SvCUR(dstr) = SvCUR(sstr); | |
10940 | SvLEN(dstr) = SvLEN(sstr); | |
10941 | SvIVX(dstr) = SvIVX(sstr); | |
10942 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10943 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10944 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
10945 | AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr), param); | |
1d7c1841 GS |
10946 | AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr); |
10947 | if (AvARRAY((AV*)sstr)) { | |
10948 | SV **dst_ary, **src_ary; | |
10949 | SSize_t items = AvFILLp((AV*)sstr) + 1; | |
10950 | ||
10951 | src_ary = AvARRAY((AV*)sstr); | |
10952 | Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*); | |
10953 | ptr_table_store(PL_ptr_table, src_ary, dst_ary); | |
10954 | SvPVX(dstr) = (char*)dst_ary; | |
10955 | AvALLOC((AV*)dstr) = dst_ary; | |
10956 | if (AvREAL((AV*)sstr)) { | |
10957 | while (items-- > 0) | |
d2d73c3e | 10958 | *dst_ary++ = sv_dup_inc(*src_ary++, param); |
1d7c1841 GS |
10959 | } |
10960 | else { | |
10961 | while (items-- > 0) | |
d2d73c3e | 10962 | *dst_ary++ = sv_dup(*src_ary++, param); |
1d7c1841 GS |
10963 | } |
10964 | items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr); | |
10965 | while (items-- > 0) { | |
10966 | *dst_ary++ = &PL_sv_undef; | |
10967 | } | |
10968 | } | |
10969 | else { | |
10970 | SvPVX(dstr) = Nullch; | |
10971 | AvALLOC((AV*)dstr) = (SV**)NULL; | |
10972 | } | |
10973 | break; | |
10974 | case SVt_PVHV: | |
10975 | SvANY(dstr) = new_XPVHV(); | |
10976 | SvCUR(dstr) = SvCUR(sstr); | |
10977 | SvLEN(dstr) = SvLEN(sstr); | |
10978 | SvIVX(dstr) = SvIVX(sstr); | |
10979 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
10980 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
10981 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
1d7c1841 GS |
10982 | HvRITER((HV*)dstr) = HvRITER((HV*)sstr); |
10983 | if (HvARRAY((HV*)sstr)) { | |
1d7c1841 GS |
10984 | STRLEN i = 0; |
10985 | XPVHV *dxhv = (XPVHV*)SvANY(dstr); | |
10986 | XPVHV *sxhv = (XPVHV*)SvANY(sstr); | |
10987 | Newz(0, dxhv->xhv_array, | |
10988 | PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char); | |
10989 | while (i <= sxhv->xhv_max) { | |
10990 | ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i], | |
eb160463 GS |
10991 | (bool)!!HvSHAREKEYS(sstr), |
10992 | param); | |
1d7c1841 GS |
10993 | ++i; |
10994 | } | |
eb160463 GS |
10995 | dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, |
10996 | (bool)!!HvSHAREKEYS(sstr), param); | |
1d7c1841 GS |
10997 | } |
10998 | else { | |
10999 | SvPVX(dstr) = Nullch; | |
11000 | HvEITER((HV*)dstr) = (HE*)NULL; | |
11001 | } | |
11002 | HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */ | |
11003 | HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr)); | |
c43294b8 | 11004 | /* Record stashes for possible cloning in Perl_clone(). */ |
6676db26 | 11005 | if(HvNAME((HV*)dstr)) |
d2d73c3e | 11006 | av_push(param->stashes, dstr); |
1d7c1841 GS |
11007 | break; |
11008 | case SVt_PVFM: | |
11009 | SvANY(dstr) = new_XPVFM(); | |
11010 | FmLINES(dstr) = FmLINES(sstr); | |
11011 | goto dup_pvcv; | |
11012 | /* NOTREACHED */ | |
11013 | case SVt_PVCV: | |
11014 | SvANY(dstr) = new_XPVCV(); | |
d2d73c3e | 11015 | dup_pvcv: |
1d7c1841 GS |
11016 | SvCUR(dstr) = SvCUR(sstr); |
11017 | SvLEN(dstr) = SvLEN(sstr); | |
11018 | SvIVX(dstr) = SvIVX(sstr); | |
11019 | SvNVX(dstr) = SvNVX(sstr); | |
d2d73c3e AB |
11020 | SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param); |
11021 | SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param); | |
83841fad | 11022 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
d2d73c3e | 11023 | CvSTASH(dstr) = hv_dup(CvSTASH(sstr), param); /* NOTE: not refcounted */ |
1d7c1841 | 11024 | CvSTART(dstr) = CvSTART(sstr); |
b34c0dd4 | 11025 | OP_REFCNT_LOCK; |
1d7c1841 | 11026 | CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr)); |
b34c0dd4 | 11027 | OP_REFCNT_UNLOCK; |
1d7c1841 GS |
11028 | CvXSUB(dstr) = CvXSUB(sstr); |
11029 | CvXSUBANY(dstr) = CvXSUBANY(sstr); | |
01485f8b DM |
11030 | if (CvCONST(sstr)) { |
11031 | CvXSUBANY(dstr).any_ptr = GvUNIQUE(CvGV(sstr)) ? | |
11032 | SvREFCNT_inc(CvXSUBANY(sstr).any_ptr) : | |
11033 | sv_dup_inc(CvXSUBANY(sstr).any_ptr, param); | |
11034 | } | |
b23f1a86 DM |
11035 | /* don't dup if copying back - CvGV isn't refcounted, so the |
11036 | * duped GV may never be freed. A bit of a hack! DAPM */ | |
11037 | CvGV(dstr) = (param->flags & CLONEf_JOIN_IN) ? | |
11038 | Nullgv : gv_dup(CvGV(sstr), param) ; | |
d2d73c3e AB |
11039 | if (param->flags & CLONEf_COPY_STACKS) { |
11040 | CvDEPTH(dstr) = CvDEPTH(sstr); | |
11041 | } else { | |
11042 | CvDEPTH(dstr) = 0; | |
11043 | } | |
dd2155a4 | 11044 | PAD_DUP(CvPADLIST(dstr), CvPADLIST(sstr), param); |
7dafbf52 DM |
11045 | CvOUTSIDE_SEQ(dstr) = CvOUTSIDE_SEQ(sstr); |
11046 | CvOUTSIDE(dstr) = | |
11047 | CvWEAKOUTSIDE(sstr) | |
11048 | ? cv_dup( CvOUTSIDE(sstr), param) | |
11049 | : cv_dup_inc(CvOUTSIDE(sstr), param); | |
1d7c1841 | 11050 | CvFLAGS(dstr) = CvFLAGS(sstr); |
54356c7d | 11051 | CvFILE(dstr) = CvXSUB(sstr) ? CvFILE(sstr) : SAVEPV(CvFILE(sstr)); |
1d7c1841 GS |
11052 | break; |
11053 | default: | |
c803eecc | 11054 | Perl_croak(aTHX_ "Bizarre SvTYPE [%" IVdf "]", (IV)SvTYPE(sstr)); |
1d7c1841 GS |
11055 | break; |
11056 | } | |
11057 | ||
11058 | if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO) | |
11059 | ++PL_sv_objcount; | |
11060 | ||
11061 | return dstr; | |
d2d73c3e | 11062 | } |
1d7c1841 | 11063 | |
645c22ef DM |
11064 | /* duplicate a context */ |
11065 | ||
1d7c1841 | 11066 | PERL_CONTEXT * |
a8fc9800 | 11067 | Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max, CLONE_PARAMS* param) |
1d7c1841 GS |
11068 | { |
11069 | PERL_CONTEXT *ncxs; | |
11070 | ||
11071 | if (!cxs) | |
11072 | return (PERL_CONTEXT*)NULL; | |
11073 | ||
11074 | /* look for it in the table first */ | |
11075 | ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs); | |
11076 | if (ncxs) | |
11077 | return ncxs; | |
11078 | ||
11079 | /* create anew and remember what it is */ | |
11080 | Newz(56, ncxs, max + 1, PERL_CONTEXT); | |
11081 | ptr_table_store(PL_ptr_table, cxs, ncxs); | |
11082 | ||
11083 | while (ix >= 0) { | |
11084 | PERL_CONTEXT *cx = &cxs[ix]; | |
11085 | PERL_CONTEXT *ncx = &ncxs[ix]; | |
11086 | ncx->cx_type = cx->cx_type; | |
11087 | if (CxTYPE(cx) == CXt_SUBST) { | |
11088 | Perl_croak(aTHX_ "Cloning substitution context is unimplemented"); | |
11089 | } | |
11090 | else { | |
11091 | ncx->blk_oldsp = cx->blk_oldsp; | |
11092 | ncx->blk_oldcop = cx->blk_oldcop; | |
1d7c1841 GS |
11093 | ncx->blk_oldmarksp = cx->blk_oldmarksp; |
11094 | ncx->blk_oldscopesp = cx->blk_oldscopesp; | |
11095 | ncx->blk_oldpm = cx->blk_oldpm; | |
11096 | ncx->blk_gimme = cx->blk_gimme; | |
11097 | switch (CxTYPE(cx)) { | |
11098 | case CXt_SUB: | |
11099 | ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0 | |
d2d73c3e AB |
11100 | ? cv_dup_inc(cx->blk_sub.cv, param) |
11101 | : cv_dup(cx->blk_sub.cv,param)); | |
1d7c1841 | 11102 | ncx->blk_sub.argarray = (cx->blk_sub.hasargs |
d2d73c3e | 11103 | ? av_dup_inc(cx->blk_sub.argarray, param) |
1d7c1841 | 11104 | : Nullav); |
d2d73c3e | 11105 | ncx->blk_sub.savearray = av_dup_inc(cx->blk_sub.savearray, param); |
1d7c1841 GS |
11106 | ncx->blk_sub.olddepth = cx->blk_sub.olddepth; |
11107 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; | |
11108 | ncx->blk_sub.lval = cx->blk_sub.lval; | |
f39bc417 | 11109 | ncx->blk_sub.retop = cx->blk_sub.retop; |
1d7c1841 GS |
11110 | break; |
11111 | case CXt_EVAL: | |
11112 | ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval; | |
11113 | ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type; | |
b47cad08 | 11114 | ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv, param); |
1d7c1841 | 11115 | ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root; |
d2d73c3e | 11116 | ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text, param); |
f39bc417 | 11117 | ncx->blk_eval.retop = cx->blk_eval.retop; |
1d7c1841 GS |
11118 | break; |
11119 | case CXt_LOOP: | |
11120 | ncx->blk_loop.label = cx->blk_loop.label; | |
11121 | ncx->blk_loop.resetsp = cx->blk_loop.resetsp; | |
11122 | ncx->blk_loop.redo_op = cx->blk_loop.redo_op; | |
11123 | ncx->blk_loop.next_op = cx->blk_loop.next_op; | |
11124 | ncx->blk_loop.last_op = cx->blk_loop.last_op; | |
11125 | ncx->blk_loop.iterdata = (CxPADLOOP(cx) | |
11126 | ? cx->blk_loop.iterdata | |
d2d73c3e | 11127 | : gv_dup((GV*)cx->blk_loop.iterdata, param)); |
f3548bdc DM |
11128 | ncx->blk_loop.oldcomppad |
11129 | = (PAD*)ptr_table_fetch(PL_ptr_table, | |
11130 | cx->blk_loop.oldcomppad); | |
d2d73c3e AB |
11131 | ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave, param); |
11132 | ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval, param); | |
11133 | ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary, param); | |
1d7c1841 GS |
11134 | ncx->blk_loop.iterix = cx->blk_loop.iterix; |
11135 | ncx->blk_loop.itermax = cx->blk_loop.itermax; | |
11136 | break; | |
11137 | case CXt_FORMAT: | |
d2d73c3e AB |
11138 | ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv, param); |
11139 | ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv, param); | |
11140 | ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv, param); | |
1d7c1841 | 11141 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; |
f39bc417 | 11142 | ncx->blk_sub.retop = cx->blk_sub.retop; |
1d7c1841 GS |
11143 | break; |
11144 | case CXt_BLOCK: | |
11145 | case CXt_NULL: | |
11146 | break; | |
11147 | } | |
11148 | } | |
11149 | --ix; | |
11150 | } | |
11151 | return ncxs; | |
11152 | } | |
11153 | ||
645c22ef DM |
11154 | /* duplicate a stack info structure */ |
11155 | ||
1d7c1841 | 11156 | PERL_SI * |
a8fc9800 | 11157 | Perl_si_dup(pTHX_ PERL_SI *si, CLONE_PARAMS* param) |
1d7c1841 GS |
11158 | { |
11159 | PERL_SI *nsi; | |
11160 | ||
11161 | if (!si) | |
11162 | return (PERL_SI*)NULL; | |
11163 | ||
11164 | /* look for it in the table first */ | |
11165 | nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si); | |
11166 | if (nsi) | |
11167 | return nsi; | |
11168 | ||
11169 | /* create anew and remember what it is */ | |
11170 | Newz(56, nsi, 1, PERL_SI); | |
11171 | ptr_table_store(PL_ptr_table, si, nsi); | |
11172 | ||
d2d73c3e | 11173 | nsi->si_stack = av_dup_inc(si->si_stack, param); |
1d7c1841 GS |
11174 | nsi->si_cxix = si->si_cxix; |
11175 | nsi->si_cxmax = si->si_cxmax; | |
d2d73c3e | 11176 | nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax, param); |
1d7c1841 | 11177 | nsi->si_type = si->si_type; |
d2d73c3e AB |
11178 | nsi->si_prev = si_dup(si->si_prev, param); |
11179 | nsi->si_next = si_dup(si->si_next, param); | |
1d7c1841 GS |
11180 | nsi->si_markoff = si->si_markoff; |
11181 | ||
11182 | return nsi; | |
11183 | } | |
11184 | ||
11185 | #define POPINT(ss,ix) ((ss)[--(ix)].any_i32) | |
11186 | #define TOPINT(ss,ix) ((ss)[ix].any_i32) | |
11187 | #define POPLONG(ss,ix) ((ss)[--(ix)].any_long) | |
11188 | #define TOPLONG(ss,ix) ((ss)[ix].any_long) | |
11189 | #define POPIV(ss,ix) ((ss)[--(ix)].any_iv) | |
11190 | #define TOPIV(ss,ix) ((ss)[ix].any_iv) | |
38d8b13e HS |
11191 | #define POPBOOL(ss,ix) ((ss)[--(ix)].any_bool) |
11192 | #define TOPBOOL(ss,ix) ((ss)[ix].any_bool) | |
1d7c1841 GS |
11193 | #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr) |
11194 | #define TOPPTR(ss,ix) ((ss)[ix].any_ptr) | |
11195 | #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr) | |
11196 | #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr) | |
11197 | #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr) | |
11198 | #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr) | |
11199 | ||
11200 | /* XXXXX todo */ | |
11201 | #define pv_dup_inc(p) SAVEPV(p) | |
11202 | #define pv_dup(p) SAVEPV(p) | |
11203 | #define svp_dup_inc(p,pp) any_dup(p,pp) | |
11204 | ||
645c22ef DM |
11205 | /* map any object to the new equivent - either something in the |
11206 | * ptr table, or something in the interpreter structure | |
11207 | */ | |
11208 | ||
1d7c1841 GS |
11209 | void * |
11210 | Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl) | |
11211 | { | |
11212 | void *ret; | |
11213 | ||
11214 | if (!v) | |
11215 | return (void*)NULL; | |
11216 | ||
11217 | /* look for it in the table first */ | |
11218 | ret = ptr_table_fetch(PL_ptr_table, v); | |
11219 | if (ret) | |
11220 | return ret; | |
11221 | ||
11222 | /* see if it is part of the interpreter structure */ | |
11223 | if (v >= (void*)proto_perl && v < (void*)(proto_perl+1)) | |
acfe0abc | 11224 | ret = (void*)(((char*)aTHX) + (((char*)v) - (char*)proto_perl)); |
05ec9bb3 | 11225 | else { |
1d7c1841 | 11226 | ret = v; |
05ec9bb3 | 11227 | } |
1d7c1841 GS |
11228 | |
11229 | return ret; | |
11230 | } | |
11231 | ||
645c22ef DM |
11232 | /* duplicate the save stack */ |
11233 | ||
1d7c1841 | 11234 | ANY * |
a8fc9800 | 11235 | Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl, CLONE_PARAMS* param) |
1d7c1841 GS |
11236 | { |
11237 | ANY *ss = proto_perl->Tsavestack; | |
11238 | I32 ix = proto_perl->Tsavestack_ix; | |
11239 | I32 max = proto_perl->Tsavestack_max; | |
11240 | ANY *nss; | |
11241 | SV *sv; | |
11242 | GV *gv; | |
11243 | AV *av; | |
11244 | HV *hv; | |
11245 | void* ptr; | |
11246 | int intval; | |
11247 | long longval; | |
11248 | GP *gp; | |
11249 | IV iv; | |
11250 | I32 i; | |
c4e33207 | 11251 | char *c = NULL; |
1d7c1841 | 11252 | void (*dptr) (void*); |
acfe0abc | 11253 | void (*dxptr) (pTHX_ void*); |
e977893f | 11254 | OP *o; |
1d7c1841 GS |
11255 | |
11256 | Newz(54, nss, max, ANY); | |
11257 | ||
11258 | while (ix > 0) { | |
11259 | i = POPINT(ss,ix); | |
11260 | TOPINT(nss,ix) = i; | |
11261 | switch (i) { | |
11262 | case SAVEt_ITEM: /* normal string */ | |
11263 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11264 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11265 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 11266 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11267 | break; |
11268 | case SAVEt_SV: /* scalar reference */ | |
11269 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11270 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11271 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 11272 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 | 11273 | break; |
f4dd75d9 GS |
11274 | case SAVEt_GENERIC_PVREF: /* generic char* */ |
11275 | c = (char*)POPPTR(ss,ix); | |
11276 | TOPPTR(nss,ix) = pv_dup(c); | |
11277 | ptr = POPPTR(ss,ix); | |
11278 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11279 | break; | |
05ec9bb3 NIS |
11280 | case SAVEt_SHARED_PVREF: /* char* in shared space */ |
11281 | c = (char*)POPPTR(ss,ix); | |
11282 | TOPPTR(nss,ix) = savesharedpv(c); | |
11283 | ptr = POPPTR(ss,ix); | |
11284 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11285 | break; | |
1d7c1841 GS |
11286 | case SAVEt_GENERIC_SVREF: /* generic sv */ |
11287 | case SAVEt_SVREF: /* scalar reference */ | |
11288 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11289 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11290 | ptr = POPPTR(ss,ix); |
11291 | TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */ | |
11292 | break; | |
11293 | case SAVEt_AV: /* array reference */ | |
11294 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 11295 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 | 11296 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 11297 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
11298 | break; |
11299 | case SAVEt_HV: /* hash reference */ | |
11300 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 11301 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 | 11302 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 11303 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
11304 | break; |
11305 | case SAVEt_INT: /* int reference */ | |
11306 | ptr = POPPTR(ss,ix); | |
11307 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11308 | intval = (int)POPINT(ss,ix); | |
11309 | TOPINT(nss,ix) = intval; | |
11310 | break; | |
11311 | case SAVEt_LONG: /* long reference */ | |
11312 | ptr = POPPTR(ss,ix); | |
11313 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11314 | longval = (long)POPLONG(ss,ix); | |
11315 | TOPLONG(nss,ix) = longval; | |
11316 | break; | |
11317 | case SAVEt_I32: /* I32 reference */ | |
11318 | case SAVEt_I16: /* I16 reference */ | |
11319 | case SAVEt_I8: /* I8 reference */ | |
11320 | ptr = POPPTR(ss,ix); | |
11321 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11322 | i = POPINT(ss,ix); | |
11323 | TOPINT(nss,ix) = i; | |
11324 | break; | |
11325 | case SAVEt_IV: /* IV reference */ | |
11326 | ptr = POPPTR(ss,ix); | |
11327 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11328 | iv = POPIV(ss,ix); | |
11329 | TOPIV(nss,ix) = iv; | |
11330 | break; | |
11331 | case SAVEt_SPTR: /* SV* reference */ | |
11332 | ptr = POPPTR(ss,ix); | |
11333 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11334 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11335 | TOPPTR(nss,ix) = sv_dup(sv, param); |
1d7c1841 GS |
11336 | break; |
11337 | case SAVEt_VPTR: /* random* reference */ | |
11338 | ptr = POPPTR(ss,ix); | |
11339 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11340 | ptr = POPPTR(ss,ix); | |
11341 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11342 | break; | |
11343 | case SAVEt_PPTR: /* char* reference */ | |
11344 | ptr = POPPTR(ss,ix); | |
11345 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11346 | c = (char*)POPPTR(ss,ix); | |
11347 | TOPPTR(nss,ix) = pv_dup(c); | |
11348 | break; | |
11349 | case SAVEt_HPTR: /* HV* reference */ | |
11350 | ptr = POPPTR(ss,ix); | |
11351 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11352 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 11353 | TOPPTR(nss,ix) = hv_dup(hv, param); |
1d7c1841 GS |
11354 | break; |
11355 | case SAVEt_APTR: /* AV* reference */ | |
11356 | ptr = POPPTR(ss,ix); | |
11357 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11358 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 11359 | TOPPTR(nss,ix) = av_dup(av, param); |
1d7c1841 GS |
11360 | break; |
11361 | case SAVEt_NSTAB: | |
11362 | gv = (GV*)POPPTR(ss,ix); | |
d2d73c3e | 11363 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
11364 | break; |
11365 | case SAVEt_GP: /* scalar reference */ | |
11366 | gp = (GP*)POPPTR(ss,ix); | |
d2d73c3e | 11367 | TOPPTR(nss,ix) = gp = gp_dup(gp, param); |
1d7c1841 GS |
11368 | (void)GpREFCNT_inc(gp); |
11369 | gv = (GV*)POPPTR(ss,ix); | |
2ed3c8fc | 11370 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 GS |
11371 | c = (char*)POPPTR(ss,ix); |
11372 | TOPPTR(nss,ix) = pv_dup(c); | |
11373 | iv = POPIV(ss,ix); | |
11374 | TOPIV(nss,ix) = iv; | |
11375 | iv = POPIV(ss,ix); | |
11376 | TOPIV(nss,ix) = iv; | |
11377 | break; | |
11378 | case SAVEt_FREESV: | |
26d9b02f | 11379 | case SAVEt_MORTALIZESV: |
1d7c1841 | 11380 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 11381 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11382 | break; |
11383 | case SAVEt_FREEOP: | |
11384 | ptr = POPPTR(ss,ix); | |
11385 | if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) { | |
11386 | /* these are assumed to be refcounted properly */ | |
11387 | switch (((OP*)ptr)->op_type) { | |
11388 | case OP_LEAVESUB: | |
11389 | case OP_LEAVESUBLV: | |
11390 | case OP_LEAVEEVAL: | |
11391 | case OP_LEAVE: | |
11392 | case OP_SCOPE: | |
11393 | case OP_LEAVEWRITE: | |
e977893f GS |
11394 | TOPPTR(nss,ix) = ptr; |
11395 | o = (OP*)ptr; | |
11396 | OpREFCNT_inc(o); | |
1d7c1841 GS |
11397 | break; |
11398 | default: | |
11399 | TOPPTR(nss,ix) = Nullop; | |
11400 | break; | |
11401 | } | |
11402 | } | |
11403 | else | |
11404 | TOPPTR(nss,ix) = Nullop; | |
11405 | break; | |
11406 | case SAVEt_FREEPV: | |
11407 | c = (char*)POPPTR(ss,ix); | |
11408 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
11409 | break; | |
11410 | case SAVEt_CLEARSV: | |
11411 | longval = POPLONG(ss,ix); | |
11412 | TOPLONG(nss,ix) = longval; | |
11413 | break; | |
11414 | case SAVEt_DELETE: | |
11415 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 11416 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
11417 | c = (char*)POPPTR(ss,ix); |
11418 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
11419 | i = POPINT(ss,ix); | |
11420 | TOPINT(nss,ix) = i; | |
11421 | break; | |
11422 | case SAVEt_DESTRUCTOR: | |
11423 | ptr = POPPTR(ss,ix); | |
11424 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
11425 | dptr = POPDPTR(ss,ix); | |
ef75a179 | 11426 | TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl); |
1d7c1841 GS |
11427 | break; |
11428 | case SAVEt_DESTRUCTOR_X: | |
11429 | ptr = POPPTR(ss,ix); | |
11430 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
11431 | dxptr = POPDXPTR(ss,ix); | |
acfe0abc | 11432 | TOPDXPTR(nss,ix) = (void (*)(pTHX_ void*))any_dup((void *)dxptr, proto_perl); |
1d7c1841 GS |
11433 | break; |
11434 | case SAVEt_REGCONTEXT: | |
11435 | case SAVEt_ALLOC: | |
11436 | i = POPINT(ss,ix); | |
11437 | TOPINT(nss,ix) = i; | |
11438 | ix -= i; | |
11439 | break; | |
11440 | case SAVEt_STACK_POS: /* Position on Perl stack */ | |
11441 | i = POPINT(ss,ix); | |
11442 | TOPINT(nss,ix) = i; | |
11443 | break; | |
11444 | case SAVEt_AELEM: /* array element */ | |
11445 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11446 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11447 | i = POPINT(ss,ix); |
11448 | TOPINT(nss,ix) = i; | |
11449 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 11450 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 GS |
11451 | break; |
11452 | case SAVEt_HELEM: /* hash element */ | |
11453 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11454 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11455 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 11456 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11457 | hv = (HV*)POPPTR(ss,ix); |
d2d73c3e | 11458 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
11459 | break; |
11460 | case SAVEt_OP: | |
11461 | ptr = POPPTR(ss,ix); | |
11462 | TOPPTR(nss,ix) = ptr; | |
11463 | break; | |
11464 | case SAVEt_HINTS: | |
11465 | i = POPINT(ss,ix); | |
11466 | TOPINT(nss,ix) = i; | |
11467 | break; | |
c4410b1b GS |
11468 | case SAVEt_COMPPAD: |
11469 | av = (AV*)POPPTR(ss,ix); | |
58ed4fbe | 11470 | TOPPTR(nss,ix) = av_dup(av, param); |
c4410b1b | 11471 | break; |
c3564e5c GS |
11472 | case SAVEt_PADSV: |
11473 | longval = (long)POPLONG(ss,ix); | |
11474 | TOPLONG(nss,ix) = longval; | |
11475 | ptr = POPPTR(ss,ix); | |
11476 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11477 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11478 | TOPPTR(nss,ix) = sv_dup(sv, param); |
c3564e5c | 11479 | break; |
a1bb4754 | 11480 | case SAVEt_BOOL: |
38d8b13e | 11481 | ptr = POPPTR(ss,ix); |
b9609c01 | 11482 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); |
38d8b13e | 11483 | longval = (long)POPBOOL(ss,ix); |
b9609c01 | 11484 | TOPBOOL(nss,ix) = (bool)longval; |
a1bb4754 | 11485 | break; |
8bd2680e MHM |
11486 | case SAVEt_SET_SVFLAGS: |
11487 | i = POPINT(ss,ix); | |
11488 | TOPINT(nss,ix) = i; | |
11489 | i = POPINT(ss,ix); | |
11490 | TOPINT(nss,ix) = i; | |
11491 | sv = (SV*)POPPTR(ss,ix); | |
11492 | TOPPTR(nss,ix) = sv_dup(sv, param); | |
11493 | break; | |
1d7c1841 GS |
11494 | default: |
11495 | Perl_croak(aTHX_ "panic: ss_dup inconsistency"); | |
11496 | } | |
11497 | } | |
11498 | ||
11499 | return nss; | |
11500 | } | |
11501 | ||
645c22ef DM |
11502 | /* |
11503 | =for apidoc perl_clone | |
11504 | ||
11505 | Create and return a new interpreter by cloning the current one. | |
11506 | ||
4be49ee6 | 11507 | perl_clone takes these flags as parameters: |
6a78b4db | 11508 | |
7a5fa8a2 NIS |
11509 | CLONEf_COPY_STACKS - is used to, well, copy the stacks also, |
11510 | without it we only clone the data and zero the stacks, | |
11511 | with it we copy the stacks and the new perl interpreter is | |
11512 | ready to run at the exact same point as the previous one. | |
11513 | The pseudo-fork code uses COPY_STACKS while the | |
6a78b4db AB |
11514 | threads->new doesn't. |
11515 | ||
11516 | CLONEf_KEEP_PTR_TABLE | |
7a5fa8a2 NIS |
11517 | perl_clone keeps a ptr_table with the pointer of the old |
11518 | variable as a key and the new variable as a value, | |
11519 | this allows it to check if something has been cloned and not | |
11520 | clone it again but rather just use the value and increase the | |
11521 | refcount. If KEEP_PTR_TABLE is not set then perl_clone will kill | |
11522 | the ptr_table using the function | |
11523 | C<ptr_table_free(PL_ptr_table); PL_ptr_table = NULL;>, | |
11524 | reason to keep it around is if you want to dup some of your own | |
11525 | variable who are outside the graph perl scans, example of this | |
6a78b4db AB |
11526 | code is in threads.xs create |
11527 | ||
11528 | CLONEf_CLONE_HOST | |
7a5fa8a2 NIS |
11529 | This is a win32 thing, it is ignored on unix, it tells perls |
11530 | win32host code (which is c++) to clone itself, this is needed on | |
11531 | win32 if you want to run two threads at the same time, | |
11532 | if you just want to do some stuff in a separate perl interpreter | |
11533 | and then throw it away and return to the original one, | |
6a78b4db AB |
11534 | you don't need to do anything. |
11535 | ||
645c22ef DM |
11536 | =cut |
11537 | */ | |
11538 | ||
11539 | /* XXX the above needs expanding by someone who actually understands it ! */ | |
3fc56081 NK |
11540 | EXTERN_C PerlInterpreter * |
11541 | perl_clone_host(PerlInterpreter* proto_perl, UV flags); | |
645c22ef | 11542 | |
1d7c1841 GS |
11543 | PerlInterpreter * |
11544 | perl_clone(PerlInterpreter *proto_perl, UV flags) | |
11545 | { | |
1d7c1841 | 11546 | #ifdef PERL_IMPLICIT_SYS |
c43294b8 AB |
11547 | |
11548 | /* perlhost.h so we need to call into it | |
11549 | to clone the host, CPerlHost should have a c interface, sky */ | |
11550 | ||
11551 | if (flags & CLONEf_CLONE_HOST) { | |
11552 | return perl_clone_host(proto_perl,flags); | |
11553 | } | |
11554 | return perl_clone_using(proto_perl, flags, | |
1d7c1841 GS |
11555 | proto_perl->IMem, |
11556 | proto_perl->IMemShared, | |
11557 | proto_perl->IMemParse, | |
11558 | proto_perl->IEnv, | |
11559 | proto_perl->IStdIO, | |
11560 | proto_perl->ILIO, | |
11561 | proto_perl->IDir, | |
11562 | proto_perl->ISock, | |
11563 | proto_perl->IProc); | |
11564 | } | |
11565 | ||
11566 | PerlInterpreter * | |
11567 | perl_clone_using(PerlInterpreter *proto_perl, UV flags, | |
11568 | struct IPerlMem* ipM, struct IPerlMem* ipMS, | |
11569 | struct IPerlMem* ipMP, struct IPerlEnv* ipE, | |
11570 | struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO, | |
11571 | struct IPerlDir* ipD, struct IPerlSock* ipS, | |
11572 | struct IPerlProc* ipP) | |
11573 | { | |
11574 | /* XXX many of the string copies here can be optimized if they're | |
11575 | * constants; they need to be allocated as common memory and just | |
11576 | * their pointers copied. */ | |
11577 | ||
11578 | IV i; | |
64aa0685 GS |
11579 | CLONE_PARAMS clone_params; |
11580 | CLONE_PARAMS* param = &clone_params; | |
d2d73c3e | 11581 | |
1d7c1841 | 11582 | PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter)); |
ba869deb | 11583 | PERL_SET_THX(my_perl); |
1d7c1841 | 11584 | |
acfe0abc | 11585 | # ifdef DEBUGGING |
a4530404 | 11586 | Poison(my_perl, 1, PerlInterpreter); |
fd0854ff | 11587 | PL_op = Nullop; |
c008732b | 11588 | PL_curcop = (COP *)Nullop; |
1d7c1841 GS |
11589 | PL_markstack = 0; |
11590 | PL_scopestack = 0; | |
11591 | PL_savestack = 0; | |
22f7c9c9 JH |
11592 | PL_savestack_ix = 0; |
11593 | PL_savestack_max = -1; | |
66fe0623 | 11594 | PL_sig_pending = 0; |
25596c82 | 11595 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); |
acfe0abc | 11596 | # else /* !DEBUGGING */ |
1d7c1841 | 11597 | Zero(my_perl, 1, PerlInterpreter); |
acfe0abc | 11598 | # endif /* DEBUGGING */ |
1d7c1841 GS |
11599 | |
11600 | /* host pointers */ | |
11601 | PL_Mem = ipM; | |
11602 | PL_MemShared = ipMS; | |
11603 | PL_MemParse = ipMP; | |
11604 | PL_Env = ipE; | |
11605 | PL_StdIO = ipStd; | |
11606 | PL_LIO = ipLIO; | |
11607 | PL_Dir = ipD; | |
11608 | PL_Sock = ipS; | |
11609 | PL_Proc = ipP; | |
1d7c1841 GS |
11610 | #else /* !PERL_IMPLICIT_SYS */ |
11611 | IV i; | |
64aa0685 GS |
11612 | CLONE_PARAMS clone_params; |
11613 | CLONE_PARAMS* param = &clone_params; | |
1d7c1841 | 11614 | PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter)); |
ba869deb | 11615 | PERL_SET_THX(my_perl); |
1d7c1841 | 11616 | |
d2d73c3e AB |
11617 | |
11618 | ||
1d7c1841 | 11619 | # ifdef DEBUGGING |
a4530404 | 11620 | Poison(my_perl, 1, PerlInterpreter); |
fd0854ff | 11621 | PL_op = Nullop; |
c008732b | 11622 | PL_curcop = (COP *)Nullop; |
1d7c1841 GS |
11623 | PL_markstack = 0; |
11624 | PL_scopestack = 0; | |
11625 | PL_savestack = 0; | |
22f7c9c9 JH |
11626 | PL_savestack_ix = 0; |
11627 | PL_savestack_max = -1; | |
66fe0623 | 11628 | PL_sig_pending = 0; |
25596c82 | 11629 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); |
1d7c1841 GS |
11630 | # else /* !DEBUGGING */ |
11631 | Zero(my_perl, 1, PerlInterpreter); | |
11632 | # endif /* DEBUGGING */ | |
11633 | #endif /* PERL_IMPLICIT_SYS */ | |
83236556 | 11634 | param->flags = flags; |
59b40662 | 11635 | param->proto_perl = proto_perl; |
1d7c1841 GS |
11636 | |
11637 | /* arena roots */ | |
11638 | PL_xiv_arenaroot = NULL; | |
11639 | PL_xiv_root = NULL; | |
612f20c3 | 11640 | PL_xnv_arenaroot = NULL; |
1d7c1841 | 11641 | PL_xnv_root = NULL; |
612f20c3 | 11642 | PL_xrv_arenaroot = NULL; |
1d7c1841 | 11643 | PL_xrv_root = NULL; |
612f20c3 | 11644 | PL_xpv_arenaroot = NULL; |
1d7c1841 | 11645 | PL_xpv_root = NULL; |
612f20c3 | 11646 | PL_xpviv_arenaroot = NULL; |
1d7c1841 | 11647 | PL_xpviv_root = NULL; |
612f20c3 | 11648 | PL_xpvnv_arenaroot = NULL; |
1d7c1841 | 11649 | PL_xpvnv_root = NULL; |
612f20c3 | 11650 | PL_xpvcv_arenaroot = NULL; |
1d7c1841 | 11651 | PL_xpvcv_root = NULL; |
612f20c3 | 11652 | PL_xpvav_arenaroot = NULL; |
1d7c1841 | 11653 | PL_xpvav_root = NULL; |
612f20c3 | 11654 | PL_xpvhv_arenaroot = NULL; |
1d7c1841 | 11655 | PL_xpvhv_root = NULL; |
612f20c3 | 11656 | PL_xpvmg_arenaroot = NULL; |
1d7c1841 | 11657 | PL_xpvmg_root = NULL; |
612f20c3 | 11658 | PL_xpvlv_arenaroot = NULL; |
1d7c1841 | 11659 | PL_xpvlv_root = NULL; |
612f20c3 | 11660 | PL_xpvbm_arenaroot = NULL; |
1d7c1841 | 11661 | PL_xpvbm_root = NULL; |
612f20c3 | 11662 | PL_he_arenaroot = NULL; |
1d7c1841 GS |
11663 | PL_he_root = NULL; |
11664 | PL_nice_chunk = NULL; | |
11665 | PL_nice_chunk_size = 0; | |
11666 | PL_sv_count = 0; | |
11667 | PL_sv_objcount = 0; | |
11668 | PL_sv_root = Nullsv; | |
11669 | PL_sv_arenaroot = Nullsv; | |
11670 | ||
11671 | PL_debug = proto_perl->Idebug; | |
11672 | ||
e5dd39fc | 11673 | #ifdef USE_REENTRANT_API |
68853529 SB |
11674 | /* XXX: things like -Dm will segfault here in perlio, but doing |
11675 | * PERL_SET_CONTEXT(proto_perl); | |
11676 | * breaks too many other things | |
11677 | */ | |
59bd0823 | 11678 | Perl_reentrant_init(aTHX); |
e5dd39fc AB |
11679 | #endif |
11680 | ||
1d7c1841 GS |
11681 | /* create SV map for pointer relocation */ |
11682 | PL_ptr_table = ptr_table_new(); | |
11683 | ||
11684 | /* initialize these special pointers as early as possible */ | |
11685 | SvANY(&PL_sv_undef) = NULL; | |
11686 | SvREFCNT(&PL_sv_undef) = (~(U32)0)/2; | |
11687 | SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL; | |
11688 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef); | |
11689 | ||
1d7c1841 | 11690 | SvANY(&PL_sv_no) = new_XPVNV(); |
1d7c1841 | 11691 | SvREFCNT(&PL_sv_no) = (~(U32)0)/2; |
0309f36e NC |
11692 | SvFLAGS(&PL_sv_no) = SVp_IOK|SVf_IOK|SVp_NOK|SVf_NOK |
11693 | |SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
1d7c1841 GS |
11694 | SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0); |
11695 | SvCUR(&PL_sv_no) = 0; | |
11696 | SvLEN(&PL_sv_no) = 1; | |
0309f36e | 11697 | SvIVX(&PL_sv_no) = 0; |
1d7c1841 GS |
11698 | SvNVX(&PL_sv_no) = 0; |
11699 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no); | |
11700 | ||
1d7c1841 | 11701 | SvANY(&PL_sv_yes) = new_XPVNV(); |
1d7c1841 | 11702 | SvREFCNT(&PL_sv_yes) = (~(U32)0)/2; |
0309f36e NC |
11703 | SvFLAGS(&PL_sv_yes) = SVp_IOK|SVf_IOK|SVp_NOK|SVf_NOK |
11704 | |SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
1d7c1841 GS |
11705 | SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1); |
11706 | SvCUR(&PL_sv_yes) = 1; | |
11707 | SvLEN(&PL_sv_yes) = 2; | |
0309f36e | 11708 | SvIVX(&PL_sv_yes) = 1; |
1d7c1841 GS |
11709 | SvNVX(&PL_sv_yes) = 1; |
11710 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes); | |
11711 | ||
05ec9bb3 | 11712 | /* create (a non-shared!) shared string table */ |
1d7c1841 GS |
11713 | PL_strtab = newHV(); |
11714 | HvSHAREKEYS_off(PL_strtab); | |
11715 | hv_ksplit(PL_strtab, 512); | |
11716 | ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab); | |
11717 | ||
05ec9bb3 NIS |
11718 | PL_compiling = proto_perl->Icompiling; |
11719 | ||
11720 | /* These two PVs will be free'd special way so must set them same way op.c does */ | |
11721 | PL_compiling.cop_stashpv = savesharedpv(PL_compiling.cop_stashpv); | |
11722 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_stashpv, PL_compiling.cop_stashpv); | |
11723 | ||
11724 | PL_compiling.cop_file = savesharedpv(PL_compiling.cop_file); | |
11725 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_file, PL_compiling.cop_file); | |
11726 | ||
1d7c1841 GS |
11727 | ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling); |
11728 | if (!specialWARN(PL_compiling.cop_warnings)) | |
d2d73c3e | 11729 | PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings, param); |
ac27b0f5 | 11730 | if (!specialCopIO(PL_compiling.cop_io)) |
d2d73c3e | 11731 | PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io, param); |
1d7c1841 GS |
11732 | PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl); |
11733 | ||
11734 | /* pseudo environmental stuff */ | |
11735 | PL_origargc = proto_perl->Iorigargc; | |
e2975953 | 11736 | PL_origargv = proto_perl->Iorigargv; |
d2d73c3e | 11737 | |
d2d73c3e AB |
11738 | param->stashes = newAV(); /* Setup array of objects to call clone on */ |
11739 | ||
a1ea730d | 11740 | #ifdef PERLIO_LAYERS |
3a1ee7e8 NIS |
11741 | /* Clone PerlIO tables as soon as we can handle general xx_dup() */ |
11742 | PerlIO_clone(aTHX_ proto_perl, param); | |
a1ea730d | 11743 | #endif |
d2d73c3e AB |
11744 | |
11745 | PL_envgv = gv_dup(proto_perl->Ienvgv, param); | |
11746 | PL_incgv = gv_dup(proto_perl->Iincgv, param); | |
11747 | PL_hintgv = gv_dup(proto_perl->Ihintgv, param); | |
1d7c1841 | 11748 | PL_origfilename = SAVEPV(proto_perl->Iorigfilename); |
d2d73c3e AB |
11749 | PL_diehook = sv_dup_inc(proto_perl->Idiehook, param); |
11750 | PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook, param); | |
1d7c1841 GS |
11751 | |
11752 | /* switches */ | |
11753 | PL_minus_c = proto_perl->Iminus_c; | |
d2d73c3e | 11754 | PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel, param); |
1d7c1841 GS |
11755 | PL_localpatches = proto_perl->Ilocalpatches; |
11756 | PL_splitstr = proto_perl->Isplitstr; | |
11757 | PL_preprocess = proto_perl->Ipreprocess; | |
11758 | PL_minus_n = proto_perl->Iminus_n; | |
11759 | PL_minus_p = proto_perl->Iminus_p; | |
11760 | PL_minus_l = proto_perl->Iminus_l; | |
11761 | PL_minus_a = proto_perl->Iminus_a; | |
11762 | PL_minus_F = proto_perl->Iminus_F; | |
11763 | PL_doswitches = proto_perl->Idoswitches; | |
11764 | PL_dowarn = proto_perl->Idowarn; | |
11765 | PL_doextract = proto_perl->Idoextract; | |
11766 | PL_sawampersand = proto_perl->Isawampersand; | |
11767 | PL_unsafe = proto_perl->Iunsafe; | |
11768 | PL_inplace = SAVEPV(proto_perl->Iinplace); | |
d2d73c3e | 11769 | PL_e_script = sv_dup_inc(proto_perl->Ie_script, param); |
1d7c1841 GS |
11770 | PL_perldb = proto_perl->Iperldb; |
11771 | PL_perl_destruct_level = proto_perl->Iperl_destruct_level; | |
1cbb0781 | 11772 | PL_exit_flags = proto_perl->Iexit_flags; |
1d7c1841 GS |
11773 | |
11774 | /* magical thingies */ | |
11775 | /* XXX time(&PL_basetime) when asked for? */ | |
11776 | PL_basetime = proto_perl->Ibasetime; | |
d2d73c3e | 11777 | PL_formfeed = sv_dup(proto_perl->Iformfeed, param); |
1d7c1841 GS |
11778 | |
11779 | PL_maxsysfd = proto_perl->Imaxsysfd; | |
11780 | PL_multiline = proto_perl->Imultiline; | |
11781 | PL_statusvalue = proto_perl->Istatusvalue; | |
11782 | #ifdef VMS | |
11783 | PL_statusvalue_vms = proto_perl->Istatusvalue_vms; | |
11784 | #endif | |
0a378802 | 11785 | PL_encoding = sv_dup(proto_perl->Iencoding, param); |
1d7c1841 | 11786 | |
4a4c6fe3 | 11787 | sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */ |
1f483ca1 JH |
11788 | sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */ |
11789 | sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */ | |
4a4c6fe3 | 11790 | |
d2f185dc AMS |
11791 | /* Clone the regex array */ |
11792 | PL_regex_padav = newAV(); | |
11793 | { | |
11794 | I32 len = av_len((AV*)proto_perl->Iregex_padav); | |
11795 | SV** regexen = AvARRAY((AV*)proto_perl->Iregex_padav); | |
0f95fc41 AB |
11796 | av_push(PL_regex_padav, |
11797 | sv_dup_inc(regexen[0],param)); | |
11798 | for(i = 1; i <= len; i++) { | |
11799 | if(SvREPADTMP(regexen[i])) { | |
11800 | av_push(PL_regex_padav, sv_dup_inc(regexen[i], param)); | |
8cf8f3d1 | 11801 | } else { |
0f95fc41 AB |
11802 | av_push(PL_regex_padav, |
11803 | SvREFCNT_inc( | |
8cf8f3d1 | 11804 | newSViv(PTR2IV(re_dup(INT2PTR(REGEXP *, |
cbfa9890 | 11805 | SvIVX(regexen[i])), param))) |
0f95fc41 AB |
11806 | )); |
11807 | } | |
d2f185dc AMS |
11808 | } |
11809 | } | |
11810 | PL_regex_pad = AvARRAY(PL_regex_padav); | |
1fcf4c12 | 11811 | |
1d7c1841 | 11812 | /* shortcuts to various I/O objects */ |
d2d73c3e AB |
11813 | PL_stdingv = gv_dup(proto_perl->Istdingv, param); |
11814 | PL_stderrgv = gv_dup(proto_perl->Istderrgv, param); | |
11815 | PL_defgv = gv_dup(proto_perl->Idefgv, param); | |
11816 | PL_argvgv = gv_dup(proto_perl->Iargvgv, param); | |
11817 | PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv, param); | |
11818 | PL_argvout_stack = av_dup_inc(proto_perl->Iargvout_stack, param); | |
1d7c1841 GS |
11819 | |
11820 | /* shortcuts to regexp stuff */ | |
d2d73c3e | 11821 | PL_replgv = gv_dup(proto_perl->Ireplgv, param); |
1d7c1841 GS |
11822 | |
11823 | /* shortcuts to misc objects */ | |
d2d73c3e | 11824 | PL_errgv = gv_dup(proto_perl->Ierrgv, param); |
1d7c1841 GS |
11825 | |
11826 | /* shortcuts to debugging objects */ | |
d2d73c3e AB |
11827 | PL_DBgv = gv_dup(proto_perl->IDBgv, param); |
11828 | PL_DBline = gv_dup(proto_perl->IDBline, param); | |
11829 | PL_DBsub = gv_dup(proto_perl->IDBsub, param); | |
11830 | PL_DBsingle = sv_dup(proto_perl->IDBsingle, param); | |
11831 | PL_DBtrace = sv_dup(proto_perl->IDBtrace, param); | |
11832 | PL_DBsignal = sv_dup(proto_perl->IDBsignal, param); | |
06492da6 | 11833 | PL_DBassertion = sv_dup(proto_perl->IDBassertion, param); |
d2d73c3e AB |
11834 | PL_lineary = av_dup(proto_perl->Ilineary, param); |
11835 | PL_dbargs = av_dup(proto_perl->Idbargs, param); | |
1d7c1841 GS |
11836 | |
11837 | /* symbol tables */ | |
d2d73c3e AB |
11838 | PL_defstash = hv_dup_inc(proto_perl->Tdefstash, param); |
11839 | PL_curstash = hv_dup(proto_perl->Tcurstash, param); | |
d2d73c3e AB |
11840 | PL_debstash = hv_dup(proto_perl->Idebstash, param); |
11841 | PL_globalstash = hv_dup(proto_perl->Iglobalstash, param); | |
11842 | PL_curstname = sv_dup_inc(proto_perl->Icurstname, param); | |
11843 | ||
11844 | PL_beginav = av_dup_inc(proto_perl->Ibeginav, param); | |
ee1c5a4e | 11845 | PL_beginav_save = av_dup_inc(proto_perl->Ibeginav_save, param); |
ece599bd | 11846 | PL_checkav_save = av_dup_inc(proto_perl->Icheckav_save, param); |
d2d73c3e AB |
11847 | PL_endav = av_dup_inc(proto_perl->Iendav, param); |
11848 | PL_checkav = av_dup_inc(proto_perl->Icheckav, param); | |
11849 | PL_initav = av_dup_inc(proto_perl->Iinitav, param); | |
1d7c1841 GS |
11850 | |
11851 | PL_sub_generation = proto_perl->Isub_generation; | |
11852 | ||
11853 | /* funky return mechanisms */ | |
11854 | PL_forkprocess = proto_perl->Iforkprocess; | |
11855 | ||
11856 | /* subprocess state */ | |
d2d73c3e | 11857 | PL_fdpid = av_dup_inc(proto_perl->Ifdpid, param); |
1d7c1841 GS |
11858 | |
11859 | /* internal state */ | |
11860 | PL_tainting = proto_perl->Itainting; | |
7135f00b | 11861 | PL_taint_warn = proto_perl->Itaint_warn; |
1d7c1841 GS |
11862 | PL_maxo = proto_perl->Imaxo; |
11863 | if (proto_perl->Iop_mask) | |
11864 | PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo); | |
11865 | else | |
11866 | PL_op_mask = Nullch; | |
06492da6 | 11867 | /* PL_asserting = proto_perl->Iasserting; */ |
1d7c1841 GS |
11868 | |
11869 | /* current interpreter roots */ | |
d2d73c3e | 11870 | PL_main_cv = cv_dup_inc(proto_perl->Imain_cv, param); |
1d7c1841 GS |
11871 | PL_main_root = OpREFCNT_inc(proto_perl->Imain_root); |
11872 | PL_main_start = proto_perl->Imain_start; | |
e977893f | 11873 | PL_eval_root = proto_perl->Ieval_root; |
1d7c1841 GS |
11874 | PL_eval_start = proto_perl->Ieval_start; |
11875 | ||
11876 | /* runtime control stuff */ | |
11877 | PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl); | |
11878 | PL_copline = proto_perl->Icopline; | |
11879 | ||
11880 | PL_filemode = proto_perl->Ifilemode; | |
11881 | PL_lastfd = proto_perl->Ilastfd; | |
11882 | PL_oldname = proto_perl->Ioldname; /* XXX not quite right */ | |
11883 | PL_Argv = NULL; | |
11884 | PL_Cmd = Nullch; | |
11885 | PL_gensym = proto_perl->Igensym; | |
11886 | PL_preambled = proto_perl->Ipreambled; | |
d2d73c3e | 11887 | PL_preambleav = av_dup_inc(proto_perl->Ipreambleav, param); |
1d7c1841 GS |
11888 | PL_laststatval = proto_perl->Ilaststatval; |
11889 | PL_laststype = proto_perl->Ilaststype; | |
11890 | PL_mess_sv = Nullsv; | |
11891 | ||
d2d73c3e | 11892 | PL_ors_sv = sv_dup_inc(proto_perl->Iors_sv, param); |
1d7c1841 GS |
11893 | PL_ofmt = SAVEPV(proto_perl->Iofmt); |
11894 | ||
11895 | /* interpreter atexit processing */ | |
11896 | PL_exitlistlen = proto_perl->Iexitlistlen; | |
11897 | if (PL_exitlistlen) { | |
11898 | New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
11899 | Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
11900 | } | |
11901 | else | |
11902 | PL_exitlist = (PerlExitListEntry*)NULL; | |
d2d73c3e | 11903 | PL_modglobal = hv_dup_inc(proto_perl->Imodglobal, param); |
19e8ce8e AB |
11904 | PL_custom_op_names = hv_dup_inc(proto_perl->Icustom_op_names,param); |
11905 | PL_custom_op_descs = hv_dup_inc(proto_perl->Icustom_op_descs,param); | |
1d7c1841 GS |
11906 | |
11907 | PL_profiledata = NULL; | |
a8fc9800 | 11908 | PL_rsfp = fp_dup(proto_perl->Irsfp, '<', param); |
1d7c1841 | 11909 | /* PL_rsfp_filters entries have fake IoDIRP() */ |
d2d73c3e | 11910 | PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters, param); |
1d7c1841 | 11911 | |
d2d73c3e | 11912 | PL_compcv = cv_dup(proto_perl->Icompcv, param); |
dd2155a4 DM |
11913 | |
11914 | PAD_CLONE_VARS(proto_perl, param); | |
1d7c1841 GS |
11915 | |
11916 | #ifdef HAVE_INTERP_INTERN | |
11917 | sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern); | |
11918 | #endif | |
11919 | ||
11920 | /* more statics moved here */ | |
11921 | PL_generation = proto_perl->Igeneration; | |
d2d73c3e | 11922 | PL_DBcv = cv_dup(proto_perl->IDBcv, param); |
1d7c1841 GS |
11923 | |
11924 | PL_in_clean_objs = proto_perl->Iin_clean_objs; | |
11925 | PL_in_clean_all = proto_perl->Iin_clean_all; | |
11926 | ||
11927 | PL_uid = proto_perl->Iuid; | |
11928 | PL_euid = proto_perl->Ieuid; | |
11929 | PL_gid = proto_perl->Igid; | |
11930 | PL_egid = proto_perl->Iegid; | |
11931 | PL_nomemok = proto_perl->Inomemok; | |
11932 | PL_an = proto_perl->Ian; | |
1d7c1841 GS |
11933 | PL_evalseq = proto_perl->Ievalseq; |
11934 | PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */ | |
11935 | PL_origalen = proto_perl->Iorigalen; | |
11936 | PL_pidstatus = newHV(); /* XXX flag for cloning? */ | |
11937 | PL_osname = SAVEPV(proto_perl->Iosname); | |
5c728af0 | 11938 | PL_sh_path_compat = proto_perl->Ish_path_compat; /* XXX never deallocated */ |
1d7c1841 GS |
11939 | PL_sighandlerp = proto_perl->Isighandlerp; |
11940 | ||
11941 | ||
11942 | PL_runops = proto_perl->Irunops; | |
11943 | ||
11944 | Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char); | |
11945 | ||
11946 | #ifdef CSH | |
11947 | PL_cshlen = proto_perl->Icshlen; | |
74f1b2b8 | 11948 | PL_cshname = proto_perl->Icshname; /* XXX never deallocated */ |
1d7c1841 GS |
11949 | #endif |
11950 | ||
11951 | PL_lex_state = proto_perl->Ilex_state; | |
11952 | PL_lex_defer = proto_perl->Ilex_defer; | |
11953 | PL_lex_expect = proto_perl->Ilex_expect; | |
11954 | PL_lex_formbrack = proto_perl->Ilex_formbrack; | |
11955 | PL_lex_dojoin = proto_perl->Ilex_dojoin; | |
11956 | PL_lex_starts = proto_perl->Ilex_starts; | |
d2d73c3e AB |
11957 | PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff, param); |
11958 | PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl, param); | |
1d7c1841 GS |
11959 | PL_lex_op = proto_perl->Ilex_op; |
11960 | PL_lex_inpat = proto_perl->Ilex_inpat; | |
11961 | PL_lex_inwhat = proto_perl->Ilex_inwhat; | |
11962 | PL_lex_brackets = proto_perl->Ilex_brackets; | |
11963 | i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets); | |
11964 | PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i); | |
11965 | PL_lex_casemods = proto_perl->Ilex_casemods; | |
11966 | i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods); | |
11967 | PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i); | |
11968 | ||
11969 | Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE); | |
11970 | Copy(proto_perl->Inexttype, PL_nexttype, 5, I32); | |
11971 | PL_nexttoke = proto_perl->Inexttoke; | |
11972 | ||
1d773130 TB |
11973 | /* XXX This is probably masking the deeper issue of why |
11974 | * SvANY(proto_perl->Ilinestr) can be NULL at this point. For test case: | |
11975 | * http://archive.develooper.com/perl5-porters%40perl.org/msg83298.html | |
11976 | * (A little debugging with a watchpoint on it may help.) | |
11977 | */ | |
389edf32 TB |
11978 | if (SvANY(proto_perl->Ilinestr)) { |
11979 | PL_linestr = sv_dup_inc(proto_perl->Ilinestr, param); | |
11980 | i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr); | |
11981 | PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11982 | i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr); | |
11983 | PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11984 | i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr); | |
11985 | PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11986 | i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr); | |
11987 | PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11988 | } | |
11989 | else { | |
11990 | PL_linestr = NEWSV(65,79); | |
11991 | sv_upgrade(PL_linestr,SVt_PVIV); | |
11992 | sv_setpvn(PL_linestr,"",0); | |
11993 | PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
11994 | } | |
1d7c1841 | 11995 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
1d7c1841 GS |
11996 | PL_pending_ident = proto_perl->Ipending_ident; |
11997 | PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */ | |
11998 | ||
11999 | PL_expect = proto_perl->Iexpect; | |
12000 | ||
12001 | PL_multi_start = proto_perl->Imulti_start; | |
12002 | PL_multi_end = proto_perl->Imulti_end; | |
12003 | PL_multi_open = proto_perl->Imulti_open; | |
12004 | PL_multi_close = proto_perl->Imulti_close; | |
12005 | ||
12006 | PL_error_count = proto_perl->Ierror_count; | |
12007 | PL_subline = proto_perl->Isubline; | |
d2d73c3e | 12008 | PL_subname = sv_dup_inc(proto_perl->Isubname, param); |
1d7c1841 | 12009 | |
1d773130 | 12010 | /* XXX See comment on SvANY(proto_perl->Ilinestr) above */ |
389edf32 TB |
12011 | if (SvANY(proto_perl->Ilinestr)) { |
12012 | i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr); | |
12013 | PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
12014 | i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr); | |
12015 | PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
12016 | PL_last_lop_op = proto_perl->Ilast_lop_op; | |
12017 | } | |
12018 | else { | |
12019 | PL_last_uni = SvPVX(PL_linestr); | |
12020 | PL_last_lop = SvPVX(PL_linestr); | |
12021 | PL_last_lop_op = 0; | |
12022 | } | |
1d7c1841 | 12023 | PL_in_my = proto_perl->Iin_my; |
d2d73c3e | 12024 | PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash, param); |
1d7c1841 GS |
12025 | #ifdef FCRYPT |
12026 | PL_cryptseen = proto_perl->Icryptseen; | |
12027 | #endif | |
12028 | ||
12029 | PL_hints = proto_perl->Ihints; | |
12030 | ||
12031 | PL_amagic_generation = proto_perl->Iamagic_generation; | |
12032 | ||
12033 | #ifdef USE_LOCALE_COLLATE | |
12034 | PL_collation_ix = proto_perl->Icollation_ix; | |
12035 | PL_collation_name = SAVEPV(proto_perl->Icollation_name); | |
12036 | PL_collation_standard = proto_perl->Icollation_standard; | |
12037 | PL_collxfrm_base = proto_perl->Icollxfrm_base; | |
12038 | PL_collxfrm_mult = proto_perl->Icollxfrm_mult; | |
12039 | #endif /* USE_LOCALE_COLLATE */ | |
12040 | ||
12041 | #ifdef USE_LOCALE_NUMERIC | |
12042 | PL_numeric_name = SAVEPV(proto_perl->Inumeric_name); | |
12043 | PL_numeric_standard = proto_perl->Inumeric_standard; | |
12044 | PL_numeric_local = proto_perl->Inumeric_local; | |
d2d73c3e | 12045 | PL_numeric_radix_sv = sv_dup_inc(proto_perl->Inumeric_radix_sv, param); |
1d7c1841 GS |
12046 | #endif /* !USE_LOCALE_NUMERIC */ |
12047 | ||
12048 | /* utf8 character classes */ | |
d2d73c3e AB |
12049 | PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum, param); |
12050 | PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc, param); | |
12051 | PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii, param); | |
12052 | PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha, param); | |
12053 | PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space, param); | |
12054 | PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl, param); | |
12055 | PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph, param); | |
12056 | PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit, param); | |
12057 | PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper, param); | |
12058 | PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower, param); | |
12059 | PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print, param); | |
12060 | PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct, param); | |
12061 | PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit, param); | |
12062 | PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark, param); | |
12063 | PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper, param); | |
12064 | PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle, param); | |
12065 | PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower, param); | |
b4e400f9 | 12066 | PL_utf8_tofold = sv_dup_inc(proto_perl->Iutf8_tofold, param); |
82686b01 JH |
12067 | PL_utf8_idstart = sv_dup_inc(proto_perl->Iutf8_idstart, param); |
12068 | PL_utf8_idcont = sv_dup_inc(proto_perl->Iutf8_idcont, param); | |
1d7c1841 | 12069 | |
6c3182a5 | 12070 | /* Did the locale setup indicate UTF-8? */ |
9769094f | 12071 | PL_utf8locale = proto_perl->Iutf8locale; |
6c3182a5 JH |
12072 | /* Unicode features (see perlrun/-C) */ |
12073 | PL_unicode = proto_perl->Iunicode; | |
12074 | ||
12075 | /* Pre-5.8 signals control */ | |
12076 | PL_signals = proto_perl->Isignals; | |
12077 | ||
12078 | /* times() ticks per second */ | |
12079 | PL_clocktick = proto_perl->Iclocktick; | |
12080 | ||
12081 | /* Recursion stopper for PerlIO_find_layer */ | |
12082 | PL_in_load_module = proto_perl->Iin_load_module; | |
12083 | ||
12084 | /* sort() routine */ | |
12085 | PL_sort_RealCmp = proto_perl->Isort_RealCmp; | |
12086 | ||
57c6e6d2 JH |
12087 | /* Not really needed/useful since the reenrant_retint is "volatile", |
12088 | * but do it for consistency's sake. */ | |
12089 | PL_reentrant_retint = proto_perl->Ireentrant_retint; | |
12090 | ||
15a5279a JH |
12091 | /* Hooks to shared SVs and locks. */ |
12092 | PL_sharehook = proto_perl->Isharehook; | |
12093 | PL_lockhook = proto_perl->Ilockhook; | |
12094 | PL_unlockhook = proto_perl->Iunlockhook; | |
12095 | PL_threadhook = proto_perl->Ithreadhook; | |
12096 | ||
bce260cd JH |
12097 | PL_runops_std = proto_perl->Irunops_std; |
12098 | PL_runops_dbg = proto_perl->Irunops_dbg; | |
12099 | ||
12100 | #ifdef THREADS_HAVE_PIDS | |
12101 | PL_ppid = proto_perl->Ippid; | |
12102 | #endif | |
12103 | ||
1d7c1841 GS |
12104 | /* swatch cache */ |
12105 | PL_last_swash_hv = Nullhv; /* reinits on demand */ | |
12106 | PL_last_swash_klen = 0; | |
12107 | PL_last_swash_key[0]= '\0'; | |
12108 | PL_last_swash_tmps = (U8*)NULL; | |
12109 | PL_last_swash_slen = 0; | |
12110 | ||
1d7c1841 GS |
12111 | PL_glob_index = proto_perl->Iglob_index; |
12112 | PL_srand_called = proto_perl->Isrand_called; | |
504f80c1 | 12113 | PL_hash_seed = proto_perl->Ihash_seed; |
008fb0c0 | 12114 | PL_rehash_seed = proto_perl->Irehash_seed; |
1d7c1841 GS |
12115 | PL_uudmap['M'] = 0; /* reinits on demand */ |
12116 | PL_bitcount = Nullch; /* reinits on demand */ | |
12117 | ||
66fe0623 NIS |
12118 | if (proto_perl->Ipsig_pend) { |
12119 | Newz(0, PL_psig_pend, SIG_SIZE, int); | |
9dd79c3f | 12120 | } |
66fe0623 NIS |
12121 | else { |
12122 | PL_psig_pend = (int*)NULL; | |
12123 | } | |
12124 | ||
1d7c1841 | 12125 | if (proto_perl->Ipsig_ptr) { |
76d3c696 JH |
12126 | Newz(0, PL_psig_ptr, SIG_SIZE, SV*); |
12127 | Newz(0, PL_psig_name, SIG_SIZE, SV*); | |
76d3c696 | 12128 | for (i = 1; i < SIG_SIZE; i++) { |
d2d73c3e AB |
12129 | PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i], param); |
12130 | PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i], param); | |
1d7c1841 GS |
12131 | } |
12132 | } | |
12133 | else { | |
12134 | PL_psig_ptr = (SV**)NULL; | |
12135 | PL_psig_name = (SV**)NULL; | |
12136 | } | |
12137 | ||
12138 | /* thrdvar.h stuff */ | |
12139 | ||
a0739874 | 12140 | if (flags & CLONEf_COPY_STACKS) { |
1d7c1841 GS |
12141 | /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */ |
12142 | PL_tmps_ix = proto_perl->Ttmps_ix; | |
12143 | PL_tmps_max = proto_perl->Ttmps_max; | |
12144 | PL_tmps_floor = proto_perl->Ttmps_floor; | |
12145 | Newz(50, PL_tmps_stack, PL_tmps_max, SV*); | |
12146 | i = 0; | |
12147 | while (i <= PL_tmps_ix) { | |
d2d73c3e | 12148 | PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i], param); |
1d7c1841 GS |
12149 | ++i; |
12150 | } | |
12151 | ||
12152 | /* next PUSHMARK() sets *(PL_markstack_ptr+1) */ | |
12153 | i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack; | |
12154 | Newz(54, PL_markstack, i, I32); | |
12155 | PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max | |
12156 | - proto_perl->Tmarkstack); | |
12157 | PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr | |
12158 | - proto_perl->Tmarkstack); | |
12159 | Copy(proto_perl->Tmarkstack, PL_markstack, | |
12160 | PL_markstack_ptr - PL_markstack + 1, I32); | |
12161 | ||
12162 | /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix] | |
12163 | * NOTE: unlike the others! */ | |
12164 | PL_scopestack_ix = proto_perl->Tscopestack_ix; | |
12165 | PL_scopestack_max = proto_perl->Tscopestack_max; | |
12166 | Newz(54, PL_scopestack, PL_scopestack_max, I32); | |
12167 | Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32); | |
12168 | ||
1d7c1841 | 12169 | /* NOTE: si_dup() looks at PL_markstack */ |
d2d73c3e | 12170 | PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo, param); |
1d7c1841 GS |
12171 | |
12172 | /* PL_curstack = PL_curstackinfo->si_stack; */ | |
d2d73c3e AB |
12173 | PL_curstack = av_dup(proto_perl->Tcurstack, param); |
12174 | PL_mainstack = av_dup(proto_perl->Tmainstack, param); | |
1d7c1841 GS |
12175 | |
12176 | /* next PUSHs() etc. set *(PL_stack_sp+1) */ | |
12177 | PL_stack_base = AvARRAY(PL_curstack); | |
12178 | PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp | |
12179 | - proto_perl->Tstack_base); | |
12180 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); | |
12181 | ||
12182 | /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix] | |
12183 | * NOTE: unlike the others! */ | |
12184 | PL_savestack_ix = proto_perl->Tsavestack_ix; | |
12185 | PL_savestack_max = proto_perl->Tsavestack_max; | |
12186 | /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/ | |
d2d73c3e | 12187 | PL_savestack = ss_dup(proto_perl, param); |
1d7c1841 GS |
12188 | } |
12189 | else { | |
12190 | init_stacks(); | |
985e7056 | 12191 | ENTER; /* perl_destruct() wants to LEAVE; */ |
1d7c1841 GS |
12192 | } |
12193 | ||
12194 | PL_start_env = proto_perl->Tstart_env; /* XXXXXX */ | |
12195 | PL_top_env = &PL_start_env; | |
12196 | ||
12197 | PL_op = proto_perl->Top; | |
12198 | ||
12199 | PL_Sv = Nullsv; | |
12200 | PL_Xpv = (XPV*)NULL; | |
12201 | PL_na = proto_perl->Tna; | |
12202 | ||
12203 | PL_statbuf = proto_perl->Tstatbuf; | |
12204 | PL_statcache = proto_perl->Tstatcache; | |
d2d73c3e AB |
12205 | PL_statgv = gv_dup(proto_perl->Tstatgv, param); |
12206 | PL_statname = sv_dup_inc(proto_perl->Tstatname, param); | |
1d7c1841 GS |
12207 | #ifdef HAS_TIMES |
12208 | PL_timesbuf = proto_perl->Ttimesbuf; | |
12209 | #endif | |
12210 | ||
12211 | PL_tainted = proto_perl->Ttainted; | |
12212 | PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */ | |
d2d73c3e AB |
12213 | PL_rs = sv_dup_inc(proto_perl->Trs, param); |
12214 | PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv, param); | |
12215 | PL_ofs_sv = sv_dup_inc(proto_perl->Tofs_sv, param); | |
12216 | PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv, param); | |
1d7c1841 | 12217 | PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */ |
d2d73c3e AB |
12218 | PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget, param); |
12219 | PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget, param); | |
12220 | PL_formtarget = sv_dup(proto_perl->Tformtarget, param); | |
1d7c1841 GS |
12221 | |
12222 | PL_restartop = proto_perl->Trestartop; | |
12223 | PL_in_eval = proto_perl->Tin_eval; | |
12224 | PL_delaymagic = proto_perl->Tdelaymagic; | |
12225 | PL_dirty = proto_perl->Tdirty; | |
12226 | PL_localizing = proto_perl->Tlocalizing; | |
12227 | ||
d2d73c3e | 12228 | PL_errors = sv_dup_inc(proto_perl->Terrors, param); |
dd28f7bb | 12229 | PL_hv_fetch_ent_mh = Nullhe; |
1d7c1841 GS |
12230 | PL_modcount = proto_perl->Tmodcount; |
12231 | PL_lastgotoprobe = Nullop; | |
12232 | PL_dumpindent = proto_perl->Tdumpindent; | |
12233 | ||
12234 | PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl); | |
d2d73c3e AB |
12235 | PL_sortstash = hv_dup(proto_perl->Tsortstash, param); |
12236 | PL_firstgv = gv_dup(proto_perl->Tfirstgv, param); | |
12237 | PL_secondgv = gv_dup(proto_perl->Tsecondgv, param); | |
1d7c1841 GS |
12238 | PL_sortcxix = proto_perl->Tsortcxix; |
12239 | PL_efloatbuf = Nullch; /* reinits on demand */ | |
12240 | PL_efloatsize = 0; /* reinits on demand */ | |
12241 | ||
12242 | /* regex stuff */ | |
12243 | ||
12244 | PL_screamfirst = NULL; | |
12245 | PL_screamnext = NULL; | |
12246 | PL_maxscream = -1; /* reinits on demand */ | |
12247 | PL_lastscream = Nullsv; | |
12248 | ||
12249 | PL_watchaddr = NULL; | |
12250 | PL_watchok = Nullch; | |
12251 | ||
12252 | PL_regdummy = proto_perl->Tregdummy; | |
1d7c1841 GS |
12253 | PL_regprecomp = Nullch; |
12254 | PL_regnpar = 0; | |
12255 | PL_regsize = 0; | |
1d7c1841 GS |
12256 | PL_colorset = 0; /* reinits PL_colors[] */ |
12257 | /*PL_colors[6] = {0,0,0,0,0,0};*/ | |
1d7c1841 GS |
12258 | PL_reginput = Nullch; |
12259 | PL_regbol = Nullch; | |
12260 | PL_regeol = Nullch; | |
12261 | PL_regstartp = (I32*)NULL; | |
12262 | PL_regendp = (I32*)NULL; | |
12263 | PL_reglastparen = (U32*)NULL; | |
2d862feb | 12264 | PL_reglastcloseparen = (U32*)NULL; |
1d7c1841 | 12265 | PL_regtill = Nullch; |
1d7c1841 GS |
12266 | PL_reg_start_tmp = (char**)NULL; |
12267 | PL_reg_start_tmpl = 0; | |
12268 | PL_regdata = (struct reg_data*)NULL; | |
12269 | PL_bostr = Nullch; | |
12270 | PL_reg_flags = 0; | |
12271 | PL_reg_eval_set = 0; | |
12272 | PL_regnarrate = 0; | |
12273 | PL_regprogram = (regnode*)NULL; | |
12274 | PL_regindent = 0; | |
12275 | PL_regcc = (CURCUR*)NULL; | |
12276 | PL_reg_call_cc = (struct re_cc_state*)NULL; | |
12277 | PL_reg_re = (regexp*)NULL; | |
12278 | PL_reg_ganch = Nullch; | |
12279 | PL_reg_sv = Nullsv; | |
53c4c00c | 12280 | PL_reg_match_utf8 = FALSE; |
1d7c1841 GS |
12281 | PL_reg_magic = (MAGIC*)NULL; |
12282 | PL_reg_oldpos = 0; | |
12283 | PL_reg_oldcurpm = (PMOP*)NULL; | |
12284 | PL_reg_curpm = (PMOP*)NULL; | |
12285 | PL_reg_oldsaved = Nullch; | |
12286 | PL_reg_oldsavedlen = 0; | |
ed252734 | 12287 | #ifdef PERL_COPY_ON_WRITE |
504cff3b | 12288 | PL_nrs = Nullsv; |
ed252734 | 12289 | #endif |
1d7c1841 GS |
12290 | PL_reg_maxiter = 0; |
12291 | PL_reg_leftiter = 0; | |
12292 | PL_reg_poscache = Nullch; | |
12293 | PL_reg_poscache_size= 0; | |
12294 | ||
12295 | /* RE engine - function pointers */ | |
12296 | PL_regcompp = proto_perl->Tregcompp; | |
12297 | PL_regexecp = proto_perl->Tregexecp; | |
12298 | PL_regint_start = proto_perl->Tregint_start; | |
12299 | PL_regint_string = proto_perl->Tregint_string; | |
12300 | PL_regfree = proto_perl->Tregfree; | |
12301 | ||
12302 | PL_reginterp_cnt = 0; | |
12303 | PL_reg_starttry = 0; | |
12304 | ||
a2efc822 SC |
12305 | /* Pluggable optimizer */ |
12306 | PL_peepp = proto_perl->Tpeepp; | |
12307 | ||
081fc587 AB |
12308 | PL_stashcache = newHV(); |
12309 | ||
a0739874 DM |
12310 | if (!(flags & CLONEf_KEEP_PTR_TABLE)) { |
12311 | ptr_table_free(PL_ptr_table); | |
12312 | PL_ptr_table = NULL; | |
12313 | } | |
8cf8f3d1 | 12314 | |
f284b03f AMS |
12315 | /* Call the ->CLONE method, if it exists, for each of the stashes |
12316 | identified by sv_dup() above. | |
12317 | */ | |
d2d73c3e AB |
12318 | while(av_len(param->stashes) != -1) { |
12319 | HV* stash = (HV*) av_shift(param->stashes); | |
f284b03f AMS |
12320 | GV* cloner = gv_fetchmethod_autoload(stash, "CLONE", 0); |
12321 | if (cloner && GvCV(cloner)) { | |
12322 | dSP; | |
12323 | ENTER; | |
12324 | SAVETMPS; | |
12325 | PUSHMARK(SP); | |
dc507217 | 12326 | XPUSHs(sv_2mortal(newSVpv(HvNAME(stash), 0))); |
f284b03f AMS |
12327 | PUTBACK; |
12328 | call_sv((SV*)GvCV(cloner), G_DISCARD); | |
12329 | FREETMPS; | |
12330 | LEAVE; | |
12331 | } | |
4a09accc | 12332 | } |
a0739874 | 12333 | |
dc507217 | 12334 | SvREFCNT_dec(param->stashes); |
dc507217 | 12335 | |
1d7c1841 | 12336 | return my_perl; |
1d7c1841 GS |
12337 | } |
12338 | ||
1d7c1841 | 12339 | #endif /* USE_ITHREADS */ |
a0ae6670 | 12340 | |
9f4817db | 12341 | /* |
ccfc67b7 JH |
12342 | =head1 Unicode Support |
12343 | ||
9f4817db JH |
12344 | =for apidoc sv_recode_to_utf8 |
12345 | ||
5d170f3a JH |
12346 | The encoding is assumed to be an Encode object, on entry the PV |
12347 | of the sv is assumed to be octets in that encoding, and the sv | |
12348 | will be converted into Unicode (and UTF-8). | |
9f4817db | 12349 | |
5d170f3a JH |
12350 | If the sv already is UTF-8 (or if it is not POK), or if the encoding |
12351 | is not a reference, nothing is done to the sv. If the encoding is not | |
1768d7eb JH |
12352 | an C<Encode::XS> Encoding object, bad things will happen. |
12353 | (See F<lib/encoding.pm> and L<Encode>). | |
9f4817db | 12354 | |
5d170f3a | 12355 | The PV of the sv is returned. |
9f4817db | 12356 | |
5d170f3a JH |
12357 | =cut */ |
12358 | ||
12359 | char * | |
12360 | Perl_sv_recode_to_utf8(pTHX_ SV *sv, SV *encoding) | |
12361 | { | |
220e2d4e | 12362 | if (SvPOK(sv) && !SvUTF8(sv) && !IN_BYTES && SvROK(encoding)) { |
d0063567 DK |
12363 | SV *uni; |
12364 | STRLEN len; | |
12365 | char *s; | |
12366 | dSP; | |
12367 | ENTER; | |
12368 | SAVETMPS; | |
220e2d4e | 12369 | save_re_context(); |
d0063567 DK |
12370 | PUSHMARK(sp); |
12371 | EXTEND(SP, 3); | |
12372 | XPUSHs(encoding); | |
12373 | XPUSHs(sv); | |
7a5fa8a2 | 12374 | /* |
f9893866 NIS |
12375 | NI-S 2002/07/09 |
12376 | Passing sv_yes is wrong - it needs to be or'ed set of constants | |
7a5fa8a2 | 12377 | for Encode::XS, while UTf-8 decode (currently) assumes a true value means |
f9893866 NIS |
12378 | remove converted chars from source. |
12379 | ||
12380 | Both will default the value - let them. | |
7a5fa8a2 | 12381 | |
d0063567 | 12382 | XPUSHs(&PL_sv_yes); |
f9893866 | 12383 | */ |
d0063567 DK |
12384 | PUTBACK; |
12385 | call_method("decode", G_SCALAR); | |
12386 | SPAGAIN; | |
12387 | uni = POPs; | |
12388 | PUTBACK; | |
12389 | s = SvPV(uni, len); | |
d0063567 DK |
12390 | if (s != SvPVX(sv)) { |
12391 | SvGROW(sv, len + 1); | |
12392 | Move(s, SvPVX(sv), len, char); | |
12393 | SvCUR_set(sv, len); | |
12394 | SvPVX(sv)[len] = 0; | |
12395 | } | |
12396 | FREETMPS; | |
12397 | LEAVE; | |
d0063567 | 12398 | SvUTF8_on(sv); |
95899a2a | 12399 | return SvPVX(sv); |
f9893866 | 12400 | } |
95899a2a | 12401 | return SvPOKp(sv) ? SvPVX(sv) : NULL; |
9f4817db JH |
12402 | } |
12403 | ||
220e2d4e IH |
12404 | /* |
12405 | =for apidoc sv_cat_decode | |
12406 | ||
12407 | The encoding is assumed to be an Encode object, the PV of the ssv is | |
12408 | assumed to be octets in that encoding and decoding the input starts | |
12409 | from the position which (PV + *offset) pointed to. The dsv will be | |
12410 | concatenated the decoded UTF-8 string from ssv. Decoding will terminate | |
12411 | when the string tstr appears in decoding output or the input ends on | |
12412 | the PV of the ssv. The value which the offset points will be modified | |
12413 | to the last input position on the ssv. | |
68795e93 | 12414 | |
220e2d4e IH |
12415 | Returns TRUE if the terminator was found, else returns FALSE. |
12416 | ||
12417 | =cut */ | |
12418 | ||
12419 | bool | |
12420 | Perl_sv_cat_decode(pTHX_ SV *dsv, SV *encoding, | |
12421 | SV *ssv, int *offset, char *tstr, int tlen) | |
12422 | { | |
a73e8557 | 12423 | bool ret = FALSE; |
220e2d4e | 12424 | if (SvPOK(ssv) && SvPOK(dsv) && SvROK(encoding) && offset) { |
220e2d4e IH |
12425 | SV *offsv; |
12426 | dSP; | |
12427 | ENTER; | |
12428 | SAVETMPS; | |
12429 | save_re_context(); | |
12430 | PUSHMARK(sp); | |
12431 | EXTEND(SP, 6); | |
12432 | XPUSHs(encoding); | |
12433 | XPUSHs(dsv); | |
12434 | XPUSHs(ssv); | |
12435 | XPUSHs(offsv = sv_2mortal(newSViv(*offset))); | |
12436 | XPUSHs(sv_2mortal(newSVpvn(tstr, tlen))); | |
12437 | PUTBACK; | |
12438 | call_method("cat_decode", G_SCALAR); | |
12439 | SPAGAIN; | |
12440 | ret = SvTRUE(TOPs); | |
12441 | *offset = SvIV(offsv); | |
12442 | PUTBACK; | |
12443 | FREETMPS; | |
12444 | LEAVE; | |
220e2d4e | 12445 | } |
a73e8557 JH |
12446 | else |
12447 | Perl_croak(aTHX_ "Invalid argument to sv_cat_decode"); | |
12448 | return ret; | |
220e2d4e | 12449 | } |
f9893866 | 12450 | |
241d1a3b NC |
12451 | /* |
12452 | * Local variables: | |
12453 | * c-indentation-style: bsd | |
12454 | * c-basic-offset: 4 | |
12455 | * indent-tabs-mode: t | |
12456 | * End: | |
12457 | * | |
edf815fd | 12458 | * vim: shiftwidth=4: |
241d1a3b | 12459 | */ |